1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Linux MegaRAID driver for SAS based RAID controllers
4 *
5 * Copyright (c) 2003-2013 LSI Corporation
6 * Copyright (c) 2013-2016 Avago Technologies
7 * Copyright (c) 2016-2018 Broadcom Inc.
8 *
9 * Authors: Broadcom Inc.
10 * Sreenivas Bagalkote
11 * Sumant Patro
12 * Bo Yang
13 * Adam Radford
14 * Kashyap Desai <kashyap.desai@broadcom.com>
15 * Sumit Saxena <sumit.saxena@broadcom.com>
16 *
17 * Send feedback to: megaraidlinux.pdl@broadcom.com
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/types.h>
22 #include <linux/pci.h>
23 #include <linux/list.h>
24 #include <linux/moduleparam.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/uio.h>
30 #include <linux/slab.h>
31 #include <linux/uaccess.h>
32 #include <asm/unaligned.h>
33 #include <linux/fs.h>
34 #include <linux/compat.h>
35 #include <linux/blkdev.h>
36 #include <linux/mutex.h>
37 #include <linux/poll.h>
38 #include <linux/vmalloc.h>
39 #include <linux/irq_poll.h>
40 #include <linux/blk-mq-pci.h>
41
42 #include <scsi/scsi.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <scsi/scsi_device.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_tcq.h>
47 #include <scsi/scsi_dbg.h>
48 #include "megaraid_sas_fusion.h"
49 #include "megaraid_sas.h"
50
51 /*
52 * Number of sectors per IO command
53 * Will be set in megasas_init_mfi if user does not provide
54 */
55 static unsigned int max_sectors;
56 module_param_named(max_sectors, max_sectors, int, 0444);
57 MODULE_PARM_DESC(max_sectors,
58 "Maximum number of sectors per IO command");
59
60 static int msix_disable;
61 module_param(msix_disable, int, 0444);
62 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
63
64 static unsigned int msix_vectors;
65 module_param(msix_vectors, int, 0444);
66 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
67
68 static int allow_vf_ioctls;
69 module_param(allow_vf_ioctls, int, 0444);
70 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
71
72 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
73 module_param(throttlequeuedepth, int, 0444);
74 MODULE_PARM_DESC(throttlequeuedepth,
75 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
76
77 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
78 module_param(resetwaittime, int, 0444);
79 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
80
81 static int smp_affinity_enable = 1;
82 module_param(smp_affinity_enable, int, 0444);
83 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
84
85 static int rdpq_enable = 1;
86 module_param(rdpq_enable, int, 0444);
87 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
88
89 unsigned int dual_qdepth_disable;
90 module_param(dual_qdepth_disable, int, 0444);
91 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
92
93 static unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
94 module_param(scmd_timeout, int, 0444);
95 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
96
97 int perf_mode = -1;
98 module_param(perf_mode, int, 0444);
99 MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t"
100 "0 - balanced: High iops and low latency queues are allocated &\n\t\t"
101 "interrupt coalescing is enabled only on high iops queues\n\t\t"
102 "1 - iops: High iops queues are not allocated &\n\t\t"
103 "interrupt coalescing is enabled on all queues\n\t\t"
104 "2 - latency: High iops queues are not allocated &\n\t\t"
105 "interrupt coalescing is disabled on all queues\n\t\t"
106 "default mode is 'balanced'"
107 );
108
109 int event_log_level = MFI_EVT_CLASS_CRITICAL;
110 module_param(event_log_level, int, 0644);
111 MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)");
112
113 unsigned int enable_sdev_max_qd;
114 module_param(enable_sdev_max_qd, int, 0444);
115 MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0");
116
117 int host_tagset_enable = 1;
118 module_param(host_tagset_enable, int, 0444);
119 MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)");
120
121 MODULE_LICENSE("GPL");
122 MODULE_VERSION(MEGASAS_VERSION);
123 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
124 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
125
126 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
127 static int megasas_get_pd_list(struct megasas_instance *instance);
128 static int megasas_ld_list_query(struct megasas_instance *instance,
129 u8 query_type);
130 static int megasas_issue_init_mfi(struct megasas_instance *instance);
131 static int megasas_register_aen(struct megasas_instance *instance,
132 u32 seq_num, u32 class_locale_word);
133 static void megasas_get_pd_info(struct megasas_instance *instance,
134 struct scsi_device *sdev);
135 static void
136 megasas_set_ld_removed_by_fw(struct megasas_instance *instance);
137
138 /*
139 * PCI ID table for all supported controllers
140 */
141 static struct pci_device_id megasas_pci_table[] = {
142
143 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
144 /* xscale IOP */
145 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
146 /* ppc IOP */
147 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
148 /* ppc IOP */
149 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
150 /* gen2*/
151 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
152 /* gen2*/
153 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
154 /* skinny*/
155 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
156 /* skinny*/
157 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
158 /* xscale IOP, vega */
159 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
160 /* xscale IOP */
161 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
162 /* Fusion */
163 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
164 /* Plasma */
165 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
166 /* Invader */
167 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
168 /* Fury */
169 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
170 /* Intruder */
171 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
172 /* Intruder 24 port*/
173 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
174 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
175 /* VENTURA */
176 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
177 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
178 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
179 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
180 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
181 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
182 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
183 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
184 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
185 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
186 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
187 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
188 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
189 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
190 {}
191 };
192
193 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
194
195 static int megasas_mgmt_majorno;
196 struct megasas_mgmt_info megasas_mgmt_info;
197 static struct fasync_struct *megasas_async_queue;
198 static DEFINE_MUTEX(megasas_async_queue_mutex);
199
200 static int megasas_poll_wait_aen;
201 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
202 static u32 support_poll_for_event;
203 u32 megasas_dbg_lvl;
204 static u32 support_device_change;
205 static bool support_nvme_encapsulation;
206 static bool support_pci_lane_margining;
207
208 /* define lock for aen poll */
209 static spinlock_t poll_aen_lock;
210
211 extern struct dentry *megasas_debugfs_root;
212
213 void
214 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
215 u8 alt_status);
216 static u32
217 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
218 static int
219 megasas_adp_reset_gen2(struct megasas_instance *instance,
220 struct megasas_register_set __iomem *reg_set);
221 static irqreturn_t megasas_isr(int irq, void *devp);
222 static u32
223 megasas_init_adapter_mfi(struct megasas_instance *instance);
224 u32
225 megasas_build_and_issue_cmd(struct megasas_instance *instance,
226 struct scsi_cmnd *scmd);
227 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
228 int
229 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
230 int seconds);
231 void megasas_fusion_ocr_wq(struct work_struct *work);
232 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
233 int initial);
234 static int
235 megasas_set_dma_mask(struct megasas_instance *instance);
236 static int
237 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
238 static inline void
239 megasas_free_ctrl_mem(struct megasas_instance *instance);
240 static inline int
241 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
242 static inline void
243 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
244 static inline void
245 megasas_init_ctrl_params(struct megasas_instance *instance);
246
megasas_readl(struct megasas_instance *instance, const volatile void __iomem *addr)247 u32 megasas_readl(struct megasas_instance *instance,
248 const volatile void __iomem *addr)
249 {
250 u32 i = 0, ret_val;
251 /*
252 * Due to a HW errata in Aero controllers, reads to certain
253 * Fusion registers could intermittently return all zeroes.
254 * This behavior is transient in nature and subsequent reads will
255 * return valid value. As a workaround in driver, retry readl for
256 * up to thirty times until a non-zero value is read.
257 */
258 if (instance->adapter_type == AERO_SERIES) {
259 do {
260 ret_val = readl(addr);
261 i++;
262 } while (ret_val == 0 && i < 30);
263 return ret_val;
264 } else {
265 return readl(addr);
266 }
267 }
268
269 /**
270 * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs
271 * @instance: Adapter soft state
272 * @dcmd: DCMD frame inside MFI command
273 * @dma_addr: DMA address of buffer to be passed to FW
274 * @dma_len: Length of DMA buffer to be passed to FW
275 * @return: void
276 */
megasas_set_dma_settings(struct megasas_instance *instance, struct megasas_dcmd_frame *dcmd, dma_addr_t dma_addr, u32 dma_len)277 void megasas_set_dma_settings(struct megasas_instance *instance,
278 struct megasas_dcmd_frame *dcmd,
279 dma_addr_t dma_addr, u32 dma_len)
280 {
281 if (instance->consistent_mask_64bit) {
282 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
283 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
284 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
285
286 } else {
287 dcmd->sgl.sge32[0].phys_addr =
288 cpu_to_le32(lower_32_bits(dma_addr));
289 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
290 dcmd->flags = cpu_to_le16(dcmd->flags);
291 }
292 }
293
294 static void
megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)295 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
296 {
297 instance->instancet->fire_cmd(instance,
298 cmd->frame_phys_addr, 0, instance->reg_set);
299 return;
300 }
301
302 /**
303 * megasas_get_cmd - Get a command from the free pool
304 * @instance: Adapter soft state
305 *
306 * Returns a free command from the pool
307 */
megasas_get_cmd(struct megasas_instance *instance)308 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
309 *instance)
310 {
311 unsigned long flags;
312 struct megasas_cmd *cmd = NULL;
313
314 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
315
316 if (!list_empty(&instance->cmd_pool)) {
317 cmd = list_entry((&instance->cmd_pool)->next,
318 struct megasas_cmd, list);
319 list_del_init(&cmd->list);
320 } else {
321 dev_err(&instance->pdev->dev, "Command pool empty!\n");
322 }
323
324 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
325 return cmd;
326 }
327
328 /**
329 * megasas_return_cmd - Return a cmd to free command pool
330 * @instance: Adapter soft state
331 * @cmd: Command packet to be returned to free command pool
332 */
333 void
megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)334 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
335 {
336 unsigned long flags;
337 u32 blk_tags;
338 struct megasas_cmd_fusion *cmd_fusion;
339 struct fusion_context *fusion = instance->ctrl_context;
340
341 /* This flag is used only for fusion adapter.
342 * Wait for Interrupt for Polled mode DCMD
343 */
344 if (cmd->flags & DRV_DCMD_POLLED_MODE)
345 return;
346
347 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
348
349 if (fusion) {
350 blk_tags = instance->max_scsi_cmds + cmd->index;
351 cmd_fusion = fusion->cmd_list[blk_tags];
352 megasas_return_cmd_fusion(instance, cmd_fusion);
353 }
354 cmd->scmd = NULL;
355 cmd->frame_count = 0;
356 cmd->flags = 0;
357 memset(cmd->frame, 0, instance->mfi_frame_size);
358 cmd->frame->io.context = cpu_to_le32(cmd->index);
359 if (!fusion && reset_devices)
360 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
361 list_add(&cmd->list, (&instance->cmd_pool)->next);
362
363 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
364
365 }
366
367 static const char *
format_timestamp(uint32_t timestamp)368 format_timestamp(uint32_t timestamp)
369 {
370 static char buffer[32];
371
372 if ((timestamp & 0xff000000) == 0xff000000)
373 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
374 0x00ffffff);
375 else
376 snprintf(buffer, sizeof(buffer), "%us", timestamp);
377 return buffer;
378 }
379
380 static const char *
format_class(int8_t class)381 format_class(int8_t class)
382 {
383 static char buffer[6];
384
385 switch (class) {
386 case MFI_EVT_CLASS_DEBUG:
387 return "debug";
388 case MFI_EVT_CLASS_PROGRESS:
389 return "progress";
390 case MFI_EVT_CLASS_INFO:
391 return "info";
392 case MFI_EVT_CLASS_WARNING:
393 return "WARN";
394 case MFI_EVT_CLASS_CRITICAL:
395 return "CRIT";
396 case MFI_EVT_CLASS_FATAL:
397 return "FATAL";
398 case MFI_EVT_CLASS_DEAD:
399 return "DEAD";
400 default:
401 snprintf(buffer, sizeof(buffer), "%d", class);
402 return buffer;
403 }
404 }
405
406 /**
407 * megasas_decode_evt: Decode FW AEN event and print critical event
408 * for information.
409 * @instance: Adapter soft state
410 */
411 static void
megasas_decode_evt(struct megasas_instance *instance)412 megasas_decode_evt(struct megasas_instance *instance)
413 {
414 struct megasas_evt_detail *evt_detail = instance->evt_detail;
415 union megasas_evt_class_locale class_locale;
416 class_locale.word = le32_to_cpu(evt_detail->cl.word);
417
418 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
419 (event_log_level > MFI_EVT_CLASS_DEAD)) {
420 printk(KERN_WARNING "megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
421 event_log_level = MFI_EVT_CLASS_CRITICAL;
422 }
423
424 if (class_locale.members.class >= event_log_level)
425 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
426 le32_to_cpu(evt_detail->seq_num),
427 format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
428 (class_locale.members.locale),
429 format_class(class_locale.members.class),
430 evt_detail->description);
431
432 if (megasas_dbg_lvl & LD_PD_DEBUG)
433 dev_info(&instance->pdev->dev,
434 "evt_detail.args.ld.target_id/index %d/%d\n",
435 evt_detail->args.ld.target_id, evt_detail->args.ld.ld_index);
436
437 }
438
439 /*
440 * The following functions are defined for xscale
441 * (deviceid : 1064R, PERC5) controllers
442 */
443
444 /**
445 * megasas_enable_intr_xscale - Enables interrupts
446 * @instance: Adapter soft state
447 */
448 static inline void
megasas_enable_intr_xscale(struct megasas_instance *instance)449 megasas_enable_intr_xscale(struct megasas_instance *instance)
450 {
451 struct megasas_register_set __iomem *regs;
452
453 regs = instance->reg_set;
454 writel(0, &(regs)->outbound_intr_mask);
455
456 /* Dummy readl to force pci flush */
457 readl(®s->outbound_intr_mask);
458 }
459
460 /**
461 * megasas_disable_intr_xscale -Disables interrupt
462 * @instance: Adapter soft state
463 */
464 static inline void
megasas_disable_intr_xscale(struct megasas_instance *instance)465 megasas_disable_intr_xscale(struct megasas_instance *instance)
466 {
467 struct megasas_register_set __iomem *regs;
468 u32 mask = 0x1f;
469
470 regs = instance->reg_set;
471 writel(mask, ®s->outbound_intr_mask);
472 /* Dummy readl to force pci flush */
473 readl(®s->outbound_intr_mask);
474 }
475
476 /**
477 * megasas_read_fw_status_reg_xscale - returns the current FW status value
478 * @instance: Adapter soft state
479 */
480 static u32
megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)481 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
482 {
483 return readl(&instance->reg_set->outbound_msg_0);
484 }
485 /**
486 * megasas_clear_interrupt_xscale - Check & clear interrupt
487 * @instance: Adapter soft state
488 */
489 static int
megasas_clear_intr_xscale(struct megasas_instance *instance)490 megasas_clear_intr_xscale(struct megasas_instance *instance)
491 {
492 u32 status;
493 u32 mfiStatus = 0;
494 struct megasas_register_set __iomem *regs;
495 regs = instance->reg_set;
496
497 /*
498 * Check if it is our interrupt
499 */
500 status = readl(®s->outbound_intr_status);
501
502 if (status & MFI_OB_INTR_STATUS_MASK)
503 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
504 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
505 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
506
507 /*
508 * Clear the interrupt by writing back the same value
509 */
510 if (mfiStatus)
511 writel(status, ®s->outbound_intr_status);
512
513 /* Dummy readl to force pci flush */
514 readl(®s->outbound_intr_status);
515
516 return mfiStatus;
517 }
518
519 /**
520 * megasas_fire_cmd_xscale - Sends command to the FW
521 * @instance: Adapter soft state
522 * @frame_phys_addr : Physical address of cmd
523 * @frame_count : Number of frames for the command
524 * @regs : MFI register set
525 */
526 static inline void
megasas_fire_cmd_xscale(struct megasas_instance *instance, dma_addr_t frame_phys_addr, u32 frame_count, struct megasas_register_set __iomem *regs)527 megasas_fire_cmd_xscale(struct megasas_instance *instance,
528 dma_addr_t frame_phys_addr,
529 u32 frame_count,
530 struct megasas_register_set __iomem *regs)
531 {
532 unsigned long flags;
533
534 spin_lock_irqsave(&instance->hba_lock, flags);
535 writel((frame_phys_addr >> 3)|(frame_count),
536 &(regs)->inbound_queue_port);
537 spin_unlock_irqrestore(&instance->hba_lock, flags);
538 }
539
540 /**
541 * megasas_adp_reset_xscale - For controller reset
542 * @instance: Adapter soft state
543 * @regs: MFI register set
544 */
545 static int
megasas_adp_reset_xscale(struct megasas_instance *instance, struct megasas_register_set __iomem *regs)546 megasas_adp_reset_xscale(struct megasas_instance *instance,
547 struct megasas_register_set __iomem *regs)
548 {
549 u32 i;
550 u32 pcidata;
551
552 writel(MFI_ADP_RESET, ®s->inbound_doorbell);
553
554 for (i = 0; i < 3; i++)
555 msleep(1000); /* sleep for 3 secs */
556 pcidata = 0;
557 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
558 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
559 if (pcidata & 0x2) {
560 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
561 pcidata &= ~0x2;
562 pci_write_config_dword(instance->pdev,
563 MFI_1068_PCSR_OFFSET, pcidata);
564
565 for (i = 0; i < 2; i++)
566 msleep(1000); /* need to wait 2 secs again */
567
568 pcidata = 0;
569 pci_read_config_dword(instance->pdev,
570 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
571 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
572 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
573 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
574 pcidata = 0;
575 pci_write_config_dword(instance->pdev,
576 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
577 }
578 }
579 return 0;
580 }
581
582 /**
583 * megasas_check_reset_xscale - For controller reset check
584 * @instance: Adapter soft state
585 * @regs: MFI register set
586 */
587 static int
megasas_check_reset_xscale(struct megasas_instance *instance, struct megasas_register_set __iomem *regs)588 megasas_check_reset_xscale(struct megasas_instance *instance,
589 struct megasas_register_set __iomem *regs)
590 {
591 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
592 (le32_to_cpu(*instance->consumer) ==
593 MEGASAS_ADPRESET_INPROG_SIGN))
594 return 1;
595 return 0;
596 }
597
598 static struct megasas_instance_template megasas_instance_template_xscale = {
599
600 .fire_cmd = megasas_fire_cmd_xscale,
601 .enable_intr = megasas_enable_intr_xscale,
602 .disable_intr = megasas_disable_intr_xscale,
603 .clear_intr = megasas_clear_intr_xscale,
604 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
605 .adp_reset = megasas_adp_reset_xscale,
606 .check_reset = megasas_check_reset_xscale,
607 .service_isr = megasas_isr,
608 .tasklet = megasas_complete_cmd_dpc,
609 .init_adapter = megasas_init_adapter_mfi,
610 .build_and_issue_cmd = megasas_build_and_issue_cmd,
611 .issue_dcmd = megasas_issue_dcmd,
612 };
613
614 /*
615 * This is the end of set of functions & definitions specific
616 * to xscale (deviceid : 1064R, PERC5) controllers
617 */
618
619 /*
620 * The following functions are defined for ppc (deviceid : 0x60)
621 * controllers
622 */
623
624 /**
625 * megasas_enable_intr_ppc - Enables interrupts
626 * @instance: Adapter soft state
627 */
628 static inline void
megasas_enable_intr_ppc(struct megasas_instance *instance)629 megasas_enable_intr_ppc(struct megasas_instance *instance)
630 {
631 struct megasas_register_set __iomem *regs;
632
633 regs = instance->reg_set;
634 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
635
636 writel(~0x80000000, &(regs)->outbound_intr_mask);
637
638 /* Dummy readl to force pci flush */
639 readl(®s->outbound_intr_mask);
640 }
641
642 /**
643 * megasas_disable_intr_ppc - Disable interrupt
644 * @instance: Adapter soft state
645 */
646 static inline void
megasas_disable_intr_ppc(struct megasas_instance *instance)647 megasas_disable_intr_ppc(struct megasas_instance *instance)
648 {
649 struct megasas_register_set __iomem *regs;
650 u32 mask = 0xFFFFFFFF;
651
652 regs = instance->reg_set;
653 writel(mask, ®s->outbound_intr_mask);
654 /* Dummy readl to force pci flush */
655 readl(®s->outbound_intr_mask);
656 }
657
658 /**
659 * megasas_read_fw_status_reg_ppc - returns the current FW status value
660 * @instance: Adapter soft state
661 */
662 static u32
megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)663 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
664 {
665 return readl(&instance->reg_set->outbound_scratch_pad_0);
666 }
667
668 /**
669 * megasas_clear_interrupt_ppc - Check & clear interrupt
670 * @instance: Adapter soft state
671 */
672 static int
megasas_clear_intr_ppc(struct megasas_instance *instance)673 megasas_clear_intr_ppc(struct megasas_instance *instance)
674 {
675 u32 status, mfiStatus = 0;
676 struct megasas_register_set __iomem *regs;
677 regs = instance->reg_set;
678
679 /*
680 * Check if it is our interrupt
681 */
682 status = readl(®s->outbound_intr_status);
683
684 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
685 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
686
687 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
688 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
689
690 /*
691 * Clear the interrupt by writing back the same value
692 */
693 writel(status, ®s->outbound_doorbell_clear);
694
695 /* Dummy readl to force pci flush */
696 readl(®s->outbound_doorbell_clear);
697
698 return mfiStatus;
699 }
700
701 /**
702 * megasas_fire_cmd_ppc - Sends command to the FW
703 * @instance: Adapter soft state
704 * @frame_phys_addr: Physical address of cmd
705 * @frame_count: Number of frames for the command
706 * @regs: MFI register set
707 */
708 static inline void
megasas_fire_cmd_ppc(struct megasas_instance *instance, dma_addr_t frame_phys_addr, u32 frame_count, struct megasas_register_set __iomem *regs)709 megasas_fire_cmd_ppc(struct megasas_instance *instance,
710 dma_addr_t frame_phys_addr,
711 u32 frame_count,
712 struct megasas_register_set __iomem *regs)
713 {
714 unsigned long flags;
715
716 spin_lock_irqsave(&instance->hba_lock, flags);
717 writel((frame_phys_addr | (frame_count<<1))|1,
718 &(regs)->inbound_queue_port);
719 spin_unlock_irqrestore(&instance->hba_lock, flags);
720 }
721
722 /**
723 * megasas_check_reset_ppc - For controller reset check
724 * @instance: Adapter soft state
725 * @regs: MFI register set
726 */
727 static int
megasas_check_reset_ppc(struct megasas_instance *instance, struct megasas_register_set __iomem *regs)728 megasas_check_reset_ppc(struct megasas_instance *instance,
729 struct megasas_register_set __iomem *regs)
730 {
731 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
732 return 1;
733
734 return 0;
735 }
736
737 static struct megasas_instance_template megasas_instance_template_ppc = {
738
739 .fire_cmd = megasas_fire_cmd_ppc,
740 .enable_intr = megasas_enable_intr_ppc,
741 .disable_intr = megasas_disable_intr_ppc,
742 .clear_intr = megasas_clear_intr_ppc,
743 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
744 .adp_reset = megasas_adp_reset_xscale,
745 .check_reset = megasas_check_reset_ppc,
746 .service_isr = megasas_isr,
747 .tasklet = megasas_complete_cmd_dpc,
748 .init_adapter = megasas_init_adapter_mfi,
749 .build_and_issue_cmd = megasas_build_and_issue_cmd,
750 .issue_dcmd = megasas_issue_dcmd,
751 };
752
753 /**
754 * megasas_enable_intr_skinny - Enables interrupts
755 * @instance: Adapter soft state
756 */
757 static inline void
megasas_enable_intr_skinny(struct megasas_instance *instance)758 megasas_enable_intr_skinny(struct megasas_instance *instance)
759 {
760 struct megasas_register_set __iomem *regs;
761
762 regs = instance->reg_set;
763 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
764
765 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
766
767 /* Dummy readl to force pci flush */
768 readl(®s->outbound_intr_mask);
769 }
770
771 /**
772 * megasas_disable_intr_skinny - Disables interrupt
773 * @instance: Adapter soft state
774 */
775 static inline void
megasas_disable_intr_skinny(struct megasas_instance *instance)776 megasas_disable_intr_skinny(struct megasas_instance *instance)
777 {
778 struct megasas_register_set __iomem *regs;
779 u32 mask = 0xFFFFFFFF;
780
781 regs = instance->reg_set;
782 writel(mask, ®s->outbound_intr_mask);
783 /* Dummy readl to force pci flush */
784 readl(®s->outbound_intr_mask);
785 }
786
787 /**
788 * megasas_read_fw_status_reg_skinny - returns the current FW status value
789 * @instance: Adapter soft state
790 */
791 static u32
megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)792 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
793 {
794 return readl(&instance->reg_set->outbound_scratch_pad_0);
795 }
796
797 /**
798 * megasas_clear_interrupt_skinny - Check & clear interrupt
799 * @instance: Adapter soft state
800 */
801 static int
megasas_clear_intr_skinny(struct megasas_instance *instance)802 megasas_clear_intr_skinny(struct megasas_instance *instance)
803 {
804 u32 status;
805 u32 mfiStatus = 0;
806 struct megasas_register_set __iomem *regs;
807 regs = instance->reg_set;
808
809 /*
810 * Check if it is our interrupt
811 */
812 status = readl(®s->outbound_intr_status);
813
814 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
815 return 0;
816 }
817
818 /*
819 * Check if it is our interrupt
820 */
821 if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
822 MFI_STATE_FAULT) {
823 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
824 } else
825 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
826
827 /*
828 * Clear the interrupt by writing back the same value
829 */
830 writel(status, ®s->outbound_intr_status);
831
832 /*
833 * dummy read to flush PCI
834 */
835 readl(®s->outbound_intr_status);
836
837 return mfiStatus;
838 }
839
840 /**
841 * megasas_fire_cmd_skinny - Sends command to the FW
842 * @instance: Adapter soft state
843 * @frame_phys_addr: Physical address of cmd
844 * @frame_count: Number of frames for the command
845 * @regs: MFI register set
846 */
847 static inline void
megasas_fire_cmd_skinny(struct megasas_instance *instance, dma_addr_t frame_phys_addr, u32 frame_count, struct megasas_register_set __iomem *regs)848 megasas_fire_cmd_skinny(struct megasas_instance *instance,
849 dma_addr_t frame_phys_addr,
850 u32 frame_count,
851 struct megasas_register_set __iomem *regs)
852 {
853 unsigned long flags;
854
855 spin_lock_irqsave(&instance->hba_lock, flags);
856 writel(upper_32_bits(frame_phys_addr),
857 &(regs)->inbound_high_queue_port);
858 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
859 &(regs)->inbound_low_queue_port);
860 spin_unlock_irqrestore(&instance->hba_lock, flags);
861 }
862
863 /**
864 * megasas_check_reset_skinny - For controller reset check
865 * @instance: Adapter soft state
866 * @regs: MFI register set
867 */
868 static int
megasas_check_reset_skinny(struct megasas_instance *instance, struct megasas_register_set __iomem *regs)869 megasas_check_reset_skinny(struct megasas_instance *instance,
870 struct megasas_register_set __iomem *regs)
871 {
872 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
873 return 1;
874
875 return 0;
876 }
877
878 static struct megasas_instance_template megasas_instance_template_skinny = {
879
880 .fire_cmd = megasas_fire_cmd_skinny,
881 .enable_intr = megasas_enable_intr_skinny,
882 .disable_intr = megasas_disable_intr_skinny,
883 .clear_intr = megasas_clear_intr_skinny,
884 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
885 .adp_reset = megasas_adp_reset_gen2,
886 .check_reset = megasas_check_reset_skinny,
887 .service_isr = megasas_isr,
888 .tasklet = megasas_complete_cmd_dpc,
889 .init_adapter = megasas_init_adapter_mfi,
890 .build_and_issue_cmd = megasas_build_and_issue_cmd,
891 .issue_dcmd = megasas_issue_dcmd,
892 };
893
894
895 /*
896 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
897 * controllers
898 */
899
900 /**
901 * megasas_enable_intr_gen2 - Enables interrupts
902 * @instance: Adapter soft state
903 */
904 static inline void
megasas_enable_intr_gen2(struct megasas_instance *instance)905 megasas_enable_intr_gen2(struct megasas_instance *instance)
906 {
907 struct megasas_register_set __iomem *regs;
908
909 regs = instance->reg_set;
910 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
911
912 /* write ~0x00000005 (4 & 1) to the intr mask*/
913 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
914
915 /* Dummy readl to force pci flush */
916 readl(®s->outbound_intr_mask);
917 }
918
919 /**
920 * megasas_disable_intr_gen2 - Disables interrupt
921 * @instance: Adapter soft state
922 */
923 static inline void
megasas_disable_intr_gen2(struct megasas_instance *instance)924 megasas_disable_intr_gen2(struct megasas_instance *instance)
925 {
926 struct megasas_register_set __iomem *regs;
927 u32 mask = 0xFFFFFFFF;
928
929 regs = instance->reg_set;
930 writel(mask, ®s->outbound_intr_mask);
931 /* Dummy readl to force pci flush */
932 readl(®s->outbound_intr_mask);
933 }
934
935 /**
936 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
937 * @instance: Adapter soft state
938 */
939 static u32
megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)940 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
941 {
942 return readl(&instance->reg_set->outbound_scratch_pad_0);
943 }
944
945 /**
946 * megasas_clear_interrupt_gen2 - Check & clear interrupt
947 * @instance: Adapter soft state
948 */
949 static int
megasas_clear_intr_gen2(struct megasas_instance *instance)950 megasas_clear_intr_gen2(struct megasas_instance *instance)
951 {
952 u32 status;
953 u32 mfiStatus = 0;
954 struct megasas_register_set __iomem *regs;
955 regs = instance->reg_set;
956
957 /*
958 * Check if it is our interrupt
959 */
960 status = readl(®s->outbound_intr_status);
961
962 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
963 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
964 }
965 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
966 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
967 }
968
969 /*
970 * Clear the interrupt by writing back the same value
971 */
972 if (mfiStatus)
973 writel(status, ®s->outbound_doorbell_clear);
974
975 /* Dummy readl to force pci flush */
976 readl(®s->outbound_intr_status);
977
978 return mfiStatus;
979 }
980
981 /**
982 * megasas_fire_cmd_gen2 - Sends command to the FW
983 * @instance: Adapter soft state
984 * @frame_phys_addr: Physical address of cmd
985 * @frame_count: Number of frames for the command
986 * @regs: MFI register set
987 */
988 static inline void
megasas_fire_cmd_gen2(struct megasas_instance *instance, dma_addr_t frame_phys_addr, u32 frame_count, struct megasas_register_set __iomem *regs)989 megasas_fire_cmd_gen2(struct megasas_instance *instance,
990 dma_addr_t frame_phys_addr,
991 u32 frame_count,
992 struct megasas_register_set __iomem *regs)
993 {
994 unsigned long flags;
995
996 spin_lock_irqsave(&instance->hba_lock, flags);
997 writel((frame_phys_addr | (frame_count<<1))|1,
998 &(regs)->inbound_queue_port);
999 spin_unlock_irqrestore(&instance->hba_lock, flags);
1000 }
1001
1002 /**
1003 * megasas_adp_reset_gen2 - For controller reset
1004 * @instance: Adapter soft state
1005 * @reg_set: MFI register set
1006 */
1007 static int
megasas_adp_reset_gen2(struct megasas_instance *instance, struct megasas_register_set __iomem *reg_set)1008 megasas_adp_reset_gen2(struct megasas_instance *instance,
1009 struct megasas_register_set __iomem *reg_set)
1010 {
1011 u32 retry = 0 ;
1012 u32 HostDiag;
1013 u32 __iomem *seq_offset = ®_set->seq_offset;
1014 u32 __iomem *hostdiag_offset = ®_set->host_diag;
1015
1016 if (instance->instancet == &megasas_instance_template_skinny) {
1017 seq_offset = ®_set->fusion_seq_offset;
1018 hostdiag_offset = ®_set->fusion_host_diag;
1019 }
1020
1021 writel(0, seq_offset);
1022 writel(4, seq_offset);
1023 writel(0xb, seq_offset);
1024 writel(2, seq_offset);
1025 writel(7, seq_offset);
1026 writel(0xd, seq_offset);
1027
1028 msleep(1000);
1029
1030 HostDiag = (u32)readl(hostdiag_offset);
1031
1032 while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1033 msleep(100);
1034 HostDiag = (u32)readl(hostdiag_offset);
1035 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1036 retry, HostDiag);
1037
1038 if (retry++ >= 100)
1039 return 1;
1040
1041 }
1042
1043 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1044
1045 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1046
1047 ssleep(10);
1048
1049 HostDiag = (u32)readl(hostdiag_offset);
1050 while (HostDiag & DIAG_RESET_ADAPTER) {
1051 msleep(100);
1052 HostDiag = (u32)readl(hostdiag_offset);
1053 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1054 retry, HostDiag);
1055
1056 if (retry++ >= 1000)
1057 return 1;
1058
1059 }
1060 return 0;
1061 }
1062
1063 /**
1064 * megasas_check_reset_gen2 - For controller reset check
1065 * @instance: Adapter soft state
1066 * @regs: MFI register set
1067 */
1068 static int
megasas_check_reset_gen2(struct megasas_instance *instance, struct megasas_register_set __iomem *regs)1069 megasas_check_reset_gen2(struct megasas_instance *instance,
1070 struct megasas_register_set __iomem *regs)
1071 {
1072 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1073 return 1;
1074
1075 return 0;
1076 }
1077
1078 static struct megasas_instance_template megasas_instance_template_gen2 = {
1079
1080 .fire_cmd = megasas_fire_cmd_gen2,
1081 .enable_intr = megasas_enable_intr_gen2,
1082 .disable_intr = megasas_disable_intr_gen2,
1083 .clear_intr = megasas_clear_intr_gen2,
1084 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1085 .adp_reset = megasas_adp_reset_gen2,
1086 .check_reset = megasas_check_reset_gen2,
1087 .service_isr = megasas_isr,
1088 .tasklet = megasas_complete_cmd_dpc,
1089 .init_adapter = megasas_init_adapter_mfi,
1090 .build_and_issue_cmd = megasas_build_and_issue_cmd,
1091 .issue_dcmd = megasas_issue_dcmd,
1092 };
1093
1094 /*
1095 * This is the end of set of functions & definitions
1096 * specific to gen2 (deviceid : 0x78, 0x79) controllers
1097 */
1098
1099 /*
1100 * Template added for TB (Fusion)
1101 */
1102 extern struct megasas_instance_template megasas_instance_template_fusion;
1103
1104 /**
1105 * megasas_issue_polled - Issues a polling command
1106 * @instance: Adapter soft state
1107 * @cmd: Command packet to be issued
1108 *
1109 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1110 */
1111 int
megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)1112 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1113 {
1114 struct megasas_header *frame_hdr = &cmd->frame->hdr;
1115
1116 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1117 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1118
1119 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1120 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1121 __func__, __LINE__);
1122 return DCMD_INIT;
1123 }
1124
1125 instance->instancet->issue_dcmd(instance, cmd);
1126
1127 return wait_and_poll(instance, cmd, instance->requestorId ?
1128 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1129 }
1130
1131 /**
1132 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
1133 * @instance: Adapter soft state
1134 * @cmd: Command to be issued
1135 * @timeout: Timeout in seconds
1136 *
1137 * This function waits on an event for the command to be returned from ISR.
1138 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1139 * Used to issue ioctl commands.
1140 */
1141 int
megasas_issue_blocked_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, int timeout)1142 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1143 struct megasas_cmd *cmd, int timeout)
1144 {
1145 int ret = 0;
1146 cmd->cmd_status_drv = DCMD_INIT;
1147
1148 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1149 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1150 __func__, __LINE__);
1151 return DCMD_INIT;
1152 }
1153
1154 instance->instancet->issue_dcmd(instance, cmd);
1155
1156 if (timeout) {
1157 ret = wait_event_timeout(instance->int_cmd_wait_q,
1158 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1159 if (!ret) {
1160 dev_err(&instance->pdev->dev,
1161 "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1162 cmd->frame->dcmd.opcode, __func__);
1163 return DCMD_TIMEOUT;
1164 }
1165 } else
1166 wait_event(instance->int_cmd_wait_q,
1167 cmd->cmd_status_drv != DCMD_INIT);
1168
1169 return cmd->cmd_status_drv;
1170 }
1171
1172 /**
1173 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
1174 * @instance: Adapter soft state
1175 * @cmd_to_abort: Previously issued cmd to be aborted
1176 * @timeout: Timeout in seconds
1177 *
1178 * MFI firmware can abort previously issued AEN comamnd (automatic event
1179 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1180 * cmd and waits for return status.
1181 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1182 */
1183 static int
megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd_to_abort, int timeout)1184 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1185 struct megasas_cmd *cmd_to_abort, int timeout)
1186 {
1187 struct megasas_cmd *cmd;
1188 struct megasas_abort_frame *abort_fr;
1189 int ret = 0;
1190 u32 opcode;
1191
1192 cmd = megasas_get_cmd(instance);
1193
1194 if (!cmd)
1195 return -1;
1196
1197 abort_fr = &cmd->frame->abort;
1198
1199 /*
1200 * Prepare and issue the abort frame
1201 */
1202 abort_fr->cmd = MFI_CMD_ABORT;
1203 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1204 abort_fr->flags = cpu_to_le16(0);
1205 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1206 abort_fr->abort_mfi_phys_addr_lo =
1207 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1208 abort_fr->abort_mfi_phys_addr_hi =
1209 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1210
1211 cmd->sync_cmd = 1;
1212 cmd->cmd_status_drv = DCMD_INIT;
1213
1214 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1215 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1216 __func__, __LINE__);
1217 return DCMD_INIT;
1218 }
1219
1220 instance->instancet->issue_dcmd(instance, cmd);
1221
1222 if (timeout) {
1223 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1224 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1225 if (!ret) {
1226 opcode = cmd_to_abort->frame->dcmd.opcode;
1227 dev_err(&instance->pdev->dev,
1228 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1229 opcode, __func__);
1230 return DCMD_TIMEOUT;
1231 }
1232 } else
1233 wait_event(instance->abort_cmd_wait_q,
1234 cmd->cmd_status_drv != DCMD_INIT);
1235
1236 cmd->sync_cmd = 0;
1237
1238 megasas_return_cmd(instance, cmd);
1239 return cmd->cmd_status_drv;
1240 }
1241
1242 /**
1243 * megasas_make_sgl32 - Prepares 32-bit SGL
1244 * @instance: Adapter soft state
1245 * @scp: SCSI command from the mid-layer
1246 * @mfi_sgl: SGL to be filled in
1247 *
1248 * If successful, this function returns the number of SG elements. Otherwise,
1249 * it returnes -1.
1250 */
1251 static int
megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)1252 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1253 union megasas_sgl *mfi_sgl)
1254 {
1255 int i;
1256 int sge_count;
1257 struct scatterlist *os_sgl;
1258
1259 sge_count = scsi_dma_map(scp);
1260 BUG_ON(sge_count < 0);
1261
1262 if (sge_count) {
1263 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1264 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1265 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1266 }
1267 }
1268 return sge_count;
1269 }
1270
1271 /**
1272 * megasas_make_sgl64 - Prepares 64-bit SGL
1273 * @instance: Adapter soft state
1274 * @scp: SCSI command from the mid-layer
1275 * @mfi_sgl: SGL to be filled in
1276 *
1277 * If successful, this function returns the number of SG elements. Otherwise,
1278 * it returnes -1.
1279 */
1280 static int
megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)1281 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1282 union megasas_sgl *mfi_sgl)
1283 {
1284 int i;
1285 int sge_count;
1286 struct scatterlist *os_sgl;
1287
1288 sge_count = scsi_dma_map(scp);
1289 BUG_ON(sge_count < 0);
1290
1291 if (sge_count) {
1292 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1293 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1294 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1295 }
1296 }
1297 return sge_count;
1298 }
1299
1300 /**
1301 * megasas_make_sgl_skinny - Prepares IEEE SGL
1302 * @instance: Adapter soft state
1303 * @scp: SCSI command from the mid-layer
1304 * @mfi_sgl: SGL to be filled in
1305 *
1306 * If successful, this function returns the number of SG elements. Otherwise,
1307 * it returnes -1.
1308 */
1309 static int
megasas_make_sgl_skinny(struct megasas_instance *instance, struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)1310 megasas_make_sgl_skinny(struct megasas_instance *instance,
1311 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1312 {
1313 int i;
1314 int sge_count;
1315 struct scatterlist *os_sgl;
1316
1317 sge_count = scsi_dma_map(scp);
1318
1319 if (sge_count) {
1320 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1321 mfi_sgl->sge_skinny[i].length =
1322 cpu_to_le32(sg_dma_len(os_sgl));
1323 mfi_sgl->sge_skinny[i].phys_addr =
1324 cpu_to_le64(sg_dma_address(os_sgl));
1325 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1326 }
1327 }
1328 return sge_count;
1329 }
1330
1331 /**
1332 * megasas_get_frame_count - Computes the number of frames
1333 * @frame_type : type of frame- io or pthru frame
1334 * @sge_count : number of sg elements
1335 *
1336 * Returns the number of frames required for numnber of sge's (sge_count)
1337 */
1338
megasas_get_frame_count(struct megasas_instance *instance, u8 sge_count, u8 frame_type)1339 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1340 u8 sge_count, u8 frame_type)
1341 {
1342 int num_cnt;
1343 int sge_bytes;
1344 u32 sge_sz;
1345 u32 frame_count = 0;
1346
1347 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1348 sizeof(struct megasas_sge32);
1349
1350 if (instance->flag_ieee) {
1351 sge_sz = sizeof(struct megasas_sge_skinny);
1352 }
1353
1354 /*
1355 * Main frame can contain 2 SGEs for 64-bit SGLs and
1356 * 3 SGEs for 32-bit SGLs for ldio &
1357 * 1 SGEs for 64-bit SGLs and
1358 * 2 SGEs for 32-bit SGLs for pthru frame
1359 */
1360 if (unlikely(frame_type == PTHRU_FRAME)) {
1361 if (instance->flag_ieee == 1) {
1362 num_cnt = sge_count - 1;
1363 } else if (IS_DMA64)
1364 num_cnt = sge_count - 1;
1365 else
1366 num_cnt = sge_count - 2;
1367 } else {
1368 if (instance->flag_ieee == 1) {
1369 num_cnt = sge_count - 1;
1370 } else if (IS_DMA64)
1371 num_cnt = sge_count - 2;
1372 else
1373 num_cnt = sge_count - 3;
1374 }
1375
1376 if (num_cnt > 0) {
1377 sge_bytes = sge_sz * num_cnt;
1378
1379 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1380 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1381 }
1382 /* Main frame */
1383 frame_count += 1;
1384
1385 if (frame_count > 7)
1386 frame_count = 8;
1387 return frame_count;
1388 }
1389
1390 /**
1391 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1392 * @instance: Adapter soft state
1393 * @scp: SCSI command
1394 * @cmd: Command to be prepared in
1395 *
1396 * This function prepares CDB commands. These are typcially pass-through
1397 * commands to the devices.
1398 */
1399 static int
megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, struct megasas_cmd *cmd)1400 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1401 struct megasas_cmd *cmd)
1402 {
1403 u32 is_logical;
1404 u32 device_id;
1405 u16 flags = 0;
1406 struct megasas_pthru_frame *pthru;
1407
1408 is_logical = MEGASAS_IS_LOGICAL(scp->device);
1409 device_id = MEGASAS_DEV_INDEX(scp);
1410 pthru = (struct megasas_pthru_frame *)cmd->frame;
1411
1412 if (scp->sc_data_direction == DMA_TO_DEVICE)
1413 flags = MFI_FRAME_DIR_WRITE;
1414 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1415 flags = MFI_FRAME_DIR_READ;
1416 else if (scp->sc_data_direction == DMA_NONE)
1417 flags = MFI_FRAME_DIR_NONE;
1418
1419 if (instance->flag_ieee == 1) {
1420 flags |= MFI_FRAME_IEEE;
1421 }
1422
1423 /*
1424 * Prepare the DCDB frame
1425 */
1426 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1427 pthru->cmd_status = 0x0;
1428 pthru->scsi_status = 0x0;
1429 pthru->target_id = device_id;
1430 pthru->lun = scp->device->lun;
1431 pthru->cdb_len = scp->cmd_len;
1432 pthru->timeout = 0;
1433 pthru->pad_0 = 0;
1434 pthru->flags = cpu_to_le16(flags);
1435 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1436
1437 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1438
1439 /*
1440 * If the command is for the tape device, set the
1441 * pthru timeout to the os layer timeout value.
1442 */
1443 if (scp->device->type == TYPE_TAPE) {
1444 if ((scp->request->timeout / HZ) > 0xFFFF)
1445 pthru->timeout = cpu_to_le16(0xFFFF);
1446 else
1447 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1448 }
1449
1450 /*
1451 * Construct SGL
1452 */
1453 if (instance->flag_ieee == 1) {
1454 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1455 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1456 &pthru->sgl);
1457 } else if (IS_DMA64) {
1458 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1459 pthru->sge_count = megasas_make_sgl64(instance, scp,
1460 &pthru->sgl);
1461 } else
1462 pthru->sge_count = megasas_make_sgl32(instance, scp,
1463 &pthru->sgl);
1464
1465 if (pthru->sge_count > instance->max_num_sge) {
1466 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1467 pthru->sge_count);
1468 return 0;
1469 }
1470
1471 /*
1472 * Sense info specific
1473 */
1474 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1475 pthru->sense_buf_phys_addr_hi =
1476 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1477 pthru->sense_buf_phys_addr_lo =
1478 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1479
1480 /*
1481 * Compute the total number of frames this command consumes. FW uses
1482 * this number to pull sufficient number of frames from host memory.
1483 */
1484 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1485 PTHRU_FRAME);
1486
1487 return cmd->frame_count;
1488 }
1489
1490 /**
1491 * megasas_build_ldio - Prepares IOs to logical devices
1492 * @instance: Adapter soft state
1493 * @scp: SCSI command
1494 * @cmd: Command to be prepared
1495 *
1496 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1497 */
1498 static int
megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, struct megasas_cmd *cmd)1499 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1500 struct megasas_cmd *cmd)
1501 {
1502 u32 device_id;
1503 u8 sc = scp->cmnd[0];
1504 u16 flags = 0;
1505 struct megasas_io_frame *ldio;
1506
1507 device_id = MEGASAS_DEV_INDEX(scp);
1508 ldio = (struct megasas_io_frame *)cmd->frame;
1509
1510 if (scp->sc_data_direction == DMA_TO_DEVICE)
1511 flags = MFI_FRAME_DIR_WRITE;
1512 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1513 flags = MFI_FRAME_DIR_READ;
1514
1515 if (instance->flag_ieee == 1) {
1516 flags |= MFI_FRAME_IEEE;
1517 }
1518
1519 /*
1520 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1521 */
1522 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1523 ldio->cmd_status = 0x0;
1524 ldio->scsi_status = 0x0;
1525 ldio->target_id = device_id;
1526 ldio->timeout = 0;
1527 ldio->reserved_0 = 0;
1528 ldio->pad_0 = 0;
1529 ldio->flags = cpu_to_le16(flags);
1530 ldio->start_lba_hi = 0;
1531 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1532
1533 /*
1534 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1535 */
1536 if (scp->cmd_len == 6) {
1537 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1538 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1539 ((u32) scp->cmnd[2] << 8) |
1540 (u32) scp->cmnd[3]);
1541
1542 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1543 }
1544
1545 /*
1546 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1547 */
1548 else if (scp->cmd_len == 10) {
1549 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1550 ((u32) scp->cmnd[7] << 8));
1551 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1552 ((u32) scp->cmnd[3] << 16) |
1553 ((u32) scp->cmnd[4] << 8) |
1554 (u32) scp->cmnd[5]);
1555 }
1556
1557 /*
1558 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1559 */
1560 else if (scp->cmd_len == 12) {
1561 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1562 ((u32) scp->cmnd[7] << 16) |
1563 ((u32) scp->cmnd[8] << 8) |
1564 (u32) scp->cmnd[9]);
1565
1566 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1567 ((u32) scp->cmnd[3] << 16) |
1568 ((u32) scp->cmnd[4] << 8) |
1569 (u32) scp->cmnd[5]);
1570 }
1571
1572 /*
1573 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1574 */
1575 else if (scp->cmd_len == 16) {
1576 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1577 ((u32) scp->cmnd[11] << 16) |
1578 ((u32) scp->cmnd[12] << 8) |
1579 (u32) scp->cmnd[13]);
1580
1581 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1582 ((u32) scp->cmnd[7] << 16) |
1583 ((u32) scp->cmnd[8] << 8) |
1584 (u32) scp->cmnd[9]);
1585
1586 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1587 ((u32) scp->cmnd[3] << 16) |
1588 ((u32) scp->cmnd[4] << 8) |
1589 (u32) scp->cmnd[5]);
1590
1591 }
1592
1593 /*
1594 * Construct SGL
1595 */
1596 if (instance->flag_ieee) {
1597 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1598 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1599 &ldio->sgl);
1600 } else if (IS_DMA64) {
1601 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1602 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1603 } else
1604 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1605
1606 if (ldio->sge_count > instance->max_num_sge) {
1607 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1608 ldio->sge_count);
1609 return 0;
1610 }
1611
1612 /*
1613 * Sense info specific
1614 */
1615 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1616 ldio->sense_buf_phys_addr_hi = 0;
1617 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1618
1619 /*
1620 * Compute the total number of frames this command consumes. FW uses
1621 * this number to pull sufficient number of frames from host memory.
1622 */
1623 cmd->frame_count = megasas_get_frame_count(instance,
1624 ldio->sge_count, IO_FRAME);
1625
1626 return cmd->frame_count;
1627 }
1628
1629 /**
1630 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1631 * and whether it's RW or non RW
1632 * @cmd: SCSI command
1633 *
1634 */
megasas_cmd_type(struct scsi_cmnd *cmd)1635 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1636 {
1637 int ret;
1638
1639 switch (cmd->cmnd[0]) {
1640 case READ_10:
1641 case WRITE_10:
1642 case READ_12:
1643 case WRITE_12:
1644 case READ_6:
1645 case WRITE_6:
1646 case READ_16:
1647 case WRITE_16:
1648 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1649 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1650 break;
1651 default:
1652 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1653 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1654 }
1655 return ret;
1656 }
1657
1658 /**
1659 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1660 * in FW
1661 * @instance: Adapter soft state
1662 */
1663 static inline void
megasas_dump_pending_frames(struct megasas_instance *instance)1664 megasas_dump_pending_frames(struct megasas_instance *instance)
1665 {
1666 struct megasas_cmd *cmd;
1667 int i,n;
1668 union megasas_sgl *mfi_sgl;
1669 struct megasas_io_frame *ldio;
1670 struct megasas_pthru_frame *pthru;
1671 u32 sgcount;
1672 u16 max_cmd = instance->max_fw_cmds;
1673
1674 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1675 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1676 if (IS_DMA64)
1677 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1678 else
1679 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1680
1681 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1682 for (i = 0; i < max_cmd; i++) {
1683 cmd = instance->cmd_list[i];
1684 if (!cmd->scmd)
1685 continue;
1686 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1687 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1688 ldio = (struct megasas_io_frame *)cmd->frame;
1689 mfi_sgl = &ldio->sgl;
1690 sgcount = ldio->sge_count;
1691 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1692 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1693 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1694 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1695 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1696 } else {
1697 pthru = (struct megasas_pthru_frame *) cmd->frame;
1698 mfi_sgl = &pthru->sgl;
1699 sgcount = pthru->sge_count;
1700 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1701 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1702 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1703 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1704 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1705 }
1706 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1707 for (n = 0; n < sgcount; n++) {
1708 if (IS_DMA64)
1709 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1710 le32_to_cpu(mfi_sgl->sge64[n].length),
1711 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1712 else
1713 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1714 le32_to_cpu(mfi_sgl->sge32[n].length),
1715 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1716 }
1717 }
1718 } /*for max_cmd*/
1719 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1720 for (i = 0; i < max_cmd; i++) {
1721
1722 cmd = instance->cmd_list[i];
1723
1724 if (cmd->sync_cmd == 1)
1725 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1726 }
1727 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1728 }
1729
1730 u32
megasas_build_and_issue_cmd(struct megasas_instance *instance, struct scsi_cmnd *scmd)1731 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1732 struct scsi_cmnd *scmd)
1733 {
1734 struct megasas_cmd *cmd;
1735 u32 frame_count;
1736
1737 cmd = megasas_get_cmd(instance);
1738 if (!cmd)
1739 return SCSI_MLQUEUE_HOST_BUSY;
1740
1741 /*
1742 * Logical drive command
1743 */
1744 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1745 frame_count = megasas_build_ldio(instance, scmd, cmd);
1746 else
1747 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1748
1749 if (!frame_count)
1750 goto out_return_cmd;
1751
1752 cmd->scmd = scmd;
1753 scmd->SCp.ptr = (char *)cmd;
1754
1755 /*
1756 * Issue the command to the FW
1757 */
1758 atomic_inc(&instance->fw_outstanding);
1759
1760 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1761 cmd->frame_count-1, instance->reg_set);
1762
1763 return 0;
1764 out_return_cmd:
1765 megasas_return_cmd(instance, cmd);
1766 return SCSI_MLQUEUE_HOST_BUSY;
1767 }
1768
1769
1770 /**
1771 * megasas_queue_command - Queue entry point
1772 * @shost: adapter SCSI host
1773 * @scmd: SCSI command to be queued
1774 */
1775 static int
megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)1776 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1777 {
1778 struct megasas_instance *instance;
1779 struct MR_PRIV_DEVICE *mr_device_priv_data;
1780 u32 ld_tgt_id;
1781
1782 instance = (struct megasas_instance *)
1783 scmd->device->host->hostdata;
1784
1785 if (instance->unload == 1) {
1786 scmd->result = DID_NO_CONNECT << 16;
1787 scmd->scsi_done(scmd);
1788 return 0;
1789 }
1790
1791 if (instance->issuepend_done == 0)
1792 return SCSI_MLQUEUE_HOST_BUSY;
1793
1794
1795 /* Check for an mpio path and adjust behavior */
1796 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1797 if (megasas_check_mpio_paths(instance, scmd) ==
1798 (DID_REQUEUE << 16)) {
1799 return SCSI_MLQUEUE_HOST_BUSY;
1800 } else {
1801 scmd->result = DID_NO_CONNECT << 16;
1802 scmd->scsi_done(scmd);
1803 return 0;
1804 }
1805 }
1806
1807 mr_device_priv_data = scmd->device->hostdata;
1808 if (!mr_device_priv_data ||
1809 (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)) {
1810 scmd->result = DID_NO_CONNECT << 16;
1811 scmd->scsi_done(scmd);
1812 return 0;
1813 }
1814
1815 if (MEGASAS_IS_LOGICAL(scmd->device)) {
1816 ld_tgt_id = MEGASAS_TARGET_ID(scmd->device);
1817 if (instance->ld_tgtid_status[ld_tgt_id] == LD_TARGET_ID_DELETED) {
1818 scmd->result = DID_NO_CONNECT << 16;
1819 scmd->scsi_done(scmd);
1820 return 0;
1821 }
1822 }
1823
1824 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1825 return SCSI_MLQUEUE_HOST_BUSY;
1826
1827 if (mr_device_priv_data->tm_busy)
1828 return SCSI_MLQUEUE_DEVICE_BUSY;
1829
1830
1831 scmd->result = 0;
1832
1833 if (MEGASAS_IS_LOGICAL(scmd->device) &&
1834 (scmd->device->id >= instance->fw_supported_vd_count ||
1835 scmd->device->lun)) {
1836 scmd->result = DID_BAD_TARGET << 16;
1837 goto out_done;
1838 }
1839
1840 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1841 MEGASAS_IS_LOGICAL(scmd->device) &&
1842 (!instance->fw_sync_cache_support)) {
1843 scmd->result = DID_OK << 16;
1844 goto out_done;
1845 }
1846
1847 return instance->instancet->build_and_issue_cmd(instance, scmd);
1848
1849 out_done:
1850 scmd->scsi_done(scmd);
1851 return 0;
1852 }
1853
megasas_lookup_instance(u16 host_no)1854 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1855 {
1856 int i;
1857
1858 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1859
1860 if ((megasas_mgmt_info.instance[i]) &&
1861 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1862 return megasas_mgmt_info.instance[i];
1863 }
1864
1865 return NULL;
1866 }
1867
1868 /*
1869 * megasas_set_dynamic_target_properties -
1870 * Device property set by driver may not be static and it is required to be
1871 * updated after OCR
1872 *
1873 * set tm_capable.
1874 * set dma alignment (only for eedp protection enable vd).
1875 *
1876 * @sdev: OS provided scsi device
1877 *
1878 * Returns void
1879 */
megasas_set_dynamic_target_properties(struct scsi_device *sdev, bool is_target_prop)1880 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1881 bool is_target_prop)
1882 {
1883 u16 pd_index = 0, ld;
1884 u32 device_id;
1885 struct megasas_instance *instance;
1886 struct fusion_context *fusion;
1887 struct MR_PRIV_DEVICE *mr_device_priv_data;
1888 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1889 struct MR_LD_RAID *raid;
1890 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1891
1892 instance = megasas_lookup_instance(sdev->host->host_no);
1893 fusion = instance->ctrl_context;
1894 mr_device_priv_data = sdev->hostdata;
1895
1896 if (!fusion || !mr_device_priv_data)
1897 return;
1898
1899 if (MEGASAS_IS_LOGICAL(sdev)) {
1900 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1901 + sdev->id;
1902 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1903 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1904 if (ld >= instance->fw_supported_vd_count)
1905 return;
1906 raid = MR_LdRaidGet(ld, local_map_ptr);
1907
1908 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1909 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1910
1911 mr_device_priv_data->is_tm_capable =
1912 raid->capability.tmCapable;
1913
1914 if (!raid->flags.isEPD)
1915 sdev->no_write_same = 1;
1916
1917 } else if (instance->use_seqnum_jbod_fp) {
1918 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1919 sdev->id;
1920 pd_sync = (void *)fusion->pd_seq_sync
1921 [(instance->pd_seq_map_id - 1) & 1];
1922 mr_device_priv_data->is_tm_capable =
1923 pd_sync->seq[pd_index].capability.tmCapable;
1924 }
1925
1926 if (is_target_prop && instance->tgt_prop->reset_tmo) {
1927 /*
1928 * If FW provides a target reset timeout value, driver will use
1929 * it. If not set, fallback to default values.
1930 */
1931 mr_device_priv_data->target_reset_tmo =
1932 min_t(u8, instance->max_reset_tmo,
1933 instance->tgt_prop->reset_tmo);
1934 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1935 } else {
1936 mr_device_priv_data->target_reset_tmo =
1937 MEGASAS_DEFAULT_TM_TIMEOUT;
1938 mr_device_priv_data->task_abort_tmo =
1939 MEGASAS_DEFAULT_TM_TIMEOUT;
1940 }
1941 }
1942
1943 /*
1944 * megasas_set_nvme_device_properties -
1945 * set nomerges=2
1946 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1947 * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1948 *
1949 * MR firmware provides value in KB. Caller of this function converts
1950 * kb into bytes.
1951 *
1952 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1953 * MR firmware provides value 128 as (32 * 4K) = 128K.
1954 *
1955 * @sdev: scsi device
1956 * @max_io_size: maximum io transfer size
1957 *
1958 */
1959 static inline void
megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)1960 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1961 {
1962 struct megasas_instance *instance;
1963 u32 mr_nvme_pg_size;
1964
1965 instance = (struct megasas_instance *)sdev->host->hostdata;
1966 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1967 MR_DEFAULT_NVME_PAGE_SIZE);
1968
1969 blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1970
1971 blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1972 blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1973 }
1974
1975 /*
1976 * megasas_set_fw_assisted_qd -
1977 * set device queue depth to can_queue
1978 * set device queue depth to fw assisted qd
1979 *
1980 * @sdev: scsi device
1981 * @is_target_prop true, if fw provided target properties.
1982 */
megasas_set_fw_assisted_qd(struct scsi_device *sdev, bool is_target_prop)1983 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1984 bool is_target_prop)
1985 {
1986 u8 interface_type;
1987 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1988 u32 tgt_device_qd;
1989 struct megasas_instance *instance;
1990 struct MR_PRIV_DEVICE *mr_device_priv_data;
1991
1992 instance = megasas_lookup_instance(sdev->host->host_no);
1993 mr_device_priv_data = sdev->hostdata;
1994 interface_type = mr_device_priv_data->interface_type;
1995
1996 switch (interface_type) {
1997 case SAS_PD:
1998 device_qd = MEGASAS_SAS_QD;
1999 break;
2000 case SATA_PD:
2001 device_qd = MEGASAS_SATA_QD;
2002 break;
2003 case NVME_PD:
2004 device_qd = MEGASAS_NVME_QD;
2005 break;
2006 }
2007
2008 if (is_target_prop) {
2009 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
2010 if (tgt_device_qd)
2011 device_qd = min(instance->host->can_queue,
2012 (int)tgt_device_qd);
2013 }
2014
2015 if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
2016 device_qd = instance->host->can_queue;
2017
2018 scsi_change_queue_depth(sdev, device_qd);
2019 }
2020
2021 /*
2022 * megasas_set_static_target_properties -
2023 * Device property set by driver are static and it is not required to be
2024 * updated after OCR.
2025 *
2026 * set io timeout
2027 * set device queue depth
2028 * set nvme device properties. see - megasas_set_nvme_device_properties
2029 *
2030 * @sdev: scsi device
2031 * @is_target_prop true, if fw provided target properties.
2032 */
megasas_set_static_target_properties(struct scsi_device *sdev, bool is_target_prop)2033 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2034 bool is_target_prop)
2035 {
2036 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2037 struct megasas_instance *instance;
2038
2039 instance = megasas_lookup_instance(sdev->host->host_no);
2040
2041 /*
2042 * The RAID firmware may require extended timeouts.
2043 */
2044 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2045
2046 /* max_io_size_kb will be set to non zero for
2047 * nvme based vd and syspd.
2048 */
2049 if (is_target_prop)
2050 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2051
2052 if (instance->nvme_page_size && max_io_size_kb)
2053 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
2054
2055 megasas_set_fw_assisted_qd(sdev, is_target_prop);
2056 }
2057
2058
megasas_slave_configure(struct scsi_device *sdev)2059 static int megasas_slave_configure(struct scsi_device *sdev)
2060 {
2061 u16 pd_index = 0;
2062 struct megasas_instance *instance;
2063 int ret_target_prop = DCMD_FAILED;
2064 bool is_target_prop = false;
2065
2066 instance = megasas_lookup_instance(sdev->host->host_no);
2067 if (instance->pd_list_not_supported) {
2068 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2069 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2070 sdev->id;
2071 if (instance->pd_list[pd_index].driveState !=
2072 MR_PD_STATE_SYSTEM)
2073 return -ENXIO;
2074 }
2075 }
2076
2077 mutex_lock(&instance->reset_mutex);
2078 /* Send DCMD to Firmware and cache the information */
2079 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2080 megasas_get_pd_info(instance, sdev);
2081
2082 /* Some ventura firmware may not have instance->nvme_page_size set.
2083 * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2084 */
2085 if ((instance->tgt_prop) && (instance->nvme_page_size))
2086 ret_target_prop = megasas_get_target_prop(instance, sdev);
2087
2088 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2089 megasas_set_static_target_properties(sdev, is_target_prop);
2090
2091 /* This sdev property may change post OCR */
2092 megasas_set_dynamic_target_properties(sdev, is_target_prop);
2093
2094 mutex_unlock(&instance->reset_mutex);
2095
2096 return 0;
2097 }
2098
megasas_slave_alloc(struct scsi_device *sdev)2099 static int megasas_slave_alloc(struct scsi_device *sdev)
2100 {
2101 u16 pd_index = 0, ld_tgt_id;
2102 struct megasas_instance *instance ;
2103 struct MR_PRIV_DEVICE *mr_device_priv_data;
2104
2105 instance = megasas_lookup_instance(sdev->host->host_no);
2106 if (!MEGASAS_IS_LOGICAL(sdev)) {
2107 /*
2108 * Open the OS scan to the SYSTEM PD
2109 */
2110 pd_index =
2111 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2112 sdev->id;
2113 if ((instance->pd_list_not_supported ||
2114 instance->pd_list[pd_index].driveState ==
2115 MR_PD_STATE_SYSTEM)) {
2116 goto scan_target;
2117 }
2118 return -ENXIO;
2119 } else if (!MEGASAS_IS_LUN_VALID(sdev)) {
2120 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2121 return -ENXIO;
2122 }
2123
2124 scan_target:
2125 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2126 GFP_KERNEL);
2127 if (!mr_device_priv_data)
2128 return -ENOMEM;
2129
2130 if (MEGASAS_IS_LOGICAL(sdev)) {
2131 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2132 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE;
2133 if (megasas_dbg_lvl & LD_PD_DEBUG)
2134 sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id);
2135 }
2136
2137 sdev->hostdata = mr_device_priv_data;
2138
2139 atomic_set(&mr_device_priv_data->r1_ldio_hint,
2140 instance->r1_ldio_hint_default);
2141 return 0;
2142 }
2143
megasas_slave_destroy(struct scsi_device *sdev)2144 static void megasas_slave_destroy(struct scsi_device *sdev)
2145 {
2146 u16 ld_tgt_id;
2147 struct megasas_instance *instance;
2148
2149 instance = megasas_lookup_instance(sdev->host->host_no);
2150
2151 if (MEGASAS_IS_LOGICAL(sdev)) {
2152 if (!MEGASAS_IS_LUN_VALID(sdev)) {
2153 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2154 return;
2155 }
2156 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2157 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED;
2158 if (megasas_dbg_lvl & LD_PD_DEBUG)
2159 sdev_printk(KERN_INFO, sdev,
2160 "LD target ID %d removed from OS stack\n", ld_tgt_id);
2161 }
2162
2163 kfree(sdev->hostdata);
2164 sdev->hostdata = NULL;
2165 }
2166
2167 /*
2168 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2169 * kill adapter
2170 * @instance: Adapter soft state
2171 *
2172 */
megasas_complete_outstanding_ioctls(struct megasas_instance *instance)2173 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2174 {
2175 int i;
2176 struct megasas_cmd *cmd_mfi;
2177 struct megasas_cmd_fusion *cmd_fusion;
2178 struct fusion_context *fusion = instance->ctrl_context;
2179
2180 /* Find all outstanding ioctls */
2181 if (fusion) {
2182 for (i = 0; i < instance->max_fw_cmds; i++) {
2183 cmd_fusion = fusion->cmd_list[i];
2184 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2185 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2186 if (cmd_mfi->sync_cmd &&
2187 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2188 cmd_mfi->frame->hdr.cmd_status =
2189 MFI_STAT_WRONG_STATE;
2190 megasas_complete_cmd(instance,
2191 cmd_mfi, DID_OK);
2192 }
2193 }
2194 }
2195 } else {
2196 for (i = 0; i < instance->max_fw_cmds; i++) {
2197 cmd_mfi = instance->cmd_list[i];
2198 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2199 MFI_CMD_ABORT)
2200 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2201 }
2202 }
2203 }
2204
2205
megaraid_sas_kill_hba(struct megasas_instance *instance)2206 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2207 {
2208 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2209 dev_warn(&instance->pdev->dev,
2210 "Adapter already dead, skipping kill HBA\n");
2211 return;
2212 }
2213
2214 /* Set critical error to block I/O & ioctls in case caller didn't */
2215 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2216 /* Wait 1 second to ensure IO or ioctls in build have posted */
2217 msleep(1000);
2218 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2219 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2220 (instance->adapter_type != MFI_SERIES)) {
2221 if (!instance->requestorId) {
2222 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2223 /* Flush */
2224 readl(&instance->reg_set->doorbell);
2225 }
2226 if (instance->requestorId && instance->peerIsPresent)
2227 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2228 } else {
2229 writel(MFI_STOP_ADP,
2230 &instance->reg_set->inbound_doorbell);
2231 }
2232 /* Complete outstanding ioctls when adapter is killed */
2233 megasas_complete_outstanding_ioctls(instance);
2234 }
2235
2236 /**
2237 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2238 * restored to max value
2239 * @instance: Adapter soft state
2240 *
2241 */
2242 void
megasas_check_and_restore_queue_depth(struct megasas_instance *instance)2243 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2244 {
2245 unsigned long flags;
2246
2247 if (instance->flag & MEGASAS_FW_BUSY
2248 && time_after(jiffies, instance->last_time + 5 * HZ)
2249 && atomic_read(&instance->fw_outstanding) <
2250 instance->throttlequeuedepth + 1) {
2251
2252 spin_lock_irqsave(instance->host->host_lock, flags);
2253 instance->flag &= ~MEGASAS_FW_BUSY;
2254
2255 instance->host->can_queue = instance->cur_can_queue;
2256 spin_unlock_irqrestore(instance->host->host_lock, flags);
2257 }
2258 }
2259
2260 /**
2261 * megasas_complete_cmd_dpc - Returns FW's controller structure
2262 * @instance_addr: Address of adapter soft state
2263 *
2264 * Tasklet to complete cmds
2265 */
megasas_complete_cmd_dpc(unsigned long instance_addr)2266 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2267 {
2268 u32 producer;
2269 u32 consumer;
2270 u32 context;
2271 struct megasas_cmd *cmd;
2272 struct megasas_instance *instance =
2273 (struct megasas_instance *)instance_addr;
2274 unsigned long flags;
2275
2276 /* If we have already declared adapter dead, donot complete cmds */
2277 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2278 return;
2279
2280 spin_lock_irqsave(&instance->completion_lock, flags);
2281
2282 producer = le32_to_cpu(*instance->producer);
2283 consumer = le32_to_cpu(*instance->consumer);
2284
2285 while (consumer != producer) {
2286 context = le32_to_cpu(instance->reply_queue[consumer]);
2287 if (context >= instance->max_fw_cmds) {
2288 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2289 context);
2290 BUG();
2291 }
2292
2293 cmd = instance->cmd_list[context];
2294
2295 megasas_complete_cmd(instance, cmd, DID_OK);
2296
2297 consumer++;
2298 if (consumer == (instance->max_fw_cmds + 1)) {
2299 consumer = 0;
2300 }
2301 }
2302
2303 *instance->consumer = cpu_to_le32(producer);
2304
2305 spin_unlock_irqrestore(&instance->completion_lock, flags);
2306
2307 /*
2308 * Check if we can restore can_queue
2309 */
2310 megasas_check_and_restore_queue_depth(instance);
2311 }
2312
2313 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2314
2315 /**
2316 * megasas_start_timer - Initializes sriov heartbeat timer object
2317 * @instance: Adapter soft state
2318 *
2319 */
megasas_start_timer(struct megasas_instance *instance)2320 void megasas_start_timer(struct megasas_instance *instance)
2321 {
2322 struct timer_list *timer = &instance->sriov_heartbeat_timer;
2323
2324 timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2325 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2326 add_timer(timer);
2327 }
2328
2329 static void
2330 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2331
2332 static void
2333 process_fw_state_change_wq(struct work_struct *work);
2334
megasas_do_ocr(struct megasas_instance *instance)2335 static void megasas_do_ocr(struct megasas_instance *instance)
2336 {
2337 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2338 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2339 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2340 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2341 }
2342 instance->instancet->disable_intr(instance);
2343 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2344 instance->issuepend_done = 0;
2345
2346 atomic_set(&instance->fw_outstanding, 0);
2347 megasas_internal_reset_defer_cmds(instance);
2348 process_fw_state_change_wq(&instance->work_init);
2349 }
2350
megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance, int initial)2351 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2352 int initial)
2353 {
2354 struct megasas_cmd *cmd;
2355 struct megasas_dcmd_frame *dcmd;
2356 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2357 dma_addr_t new_affiliation_111_h;
2358 int ld, retval = 0;
2359 u8 thisVf;
2360
2361 cmd = megasas_get_cmd(instance);
2362
2363 if (!cmd) {
2364 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2365 "Failed to get cmd for scsi%d\n",
2366 instance->host->host_no);
2367 return -ENOMEM;
2368 }
2369
2370 dcmd = &cmd->frame->dcmd;
2371
2372 if (!instance->vf_affiliation_111) {
2373 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2374 "affiliation for scsi%d\n", instance->host->host_no);
2375 megasas_return_cmd(instance, cmd);
2376 return -ENOMEM;
2377 }
2378
2379 if (initial)
2380 memset(instance->vf_affiliation_111, 0,
2381 sizeof(struct MR_LD_VF_AFFILIATION_111));
2382 else {
2383 new_affiliation_111 =
2384 dma_alloc_coherent(&instance->pdev->dev,
2385 sizeof(struct MR_LD_VF_AFFILIATION_111),
2386 &new_affiliation_111_h, GFP_KERNEL);
2387 if (!new_affiliation_111) {
2388 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2389 "memory for new affiliation for scsi%d\n",
2390 instance->host->host_no);
2391 megasas_return_cmd(instance, cmd);
2392 return -ENOMEM;
2393 }
2394 }
2395
2396 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2397
2398 dcmd->cmd = MFI_CMD_DCMD;
2399 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2400 dcmd->sge_count = 1;
2401 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2402 dcmd->timeout = 0;
2403 dcmd->pad_0 = 0;
2404 dcmd->data_xfer_len =
2405 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2406 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2407
2408 if (initial)
2409 dcmd->sgl.sge32[0].phys_addr =
2410 cpu_to_le32(instance->vf_affiliation_111_h);
2411 else
2412 dcmd->sgl.sge32[0].phys_addr =
2413 cpu_to_le32(new_affiliation_111_h);
2414
2415 dcmd->sgl.sge32[0].length = cpu_to_le32(
2416 sizeof(struct MR_LD_VF_AFFILIATION_111));
2417
2418 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2419 "scsi%d\n", instance->host->host_no);
2420
2421 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2422 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2423 " failed with status 0x%x for scsi%d\n",
2424 dcmd->cmd_status, instance->host->host_no);
2425 retval = 1; /* Do a scan if we couldn't get affiliation */
2426 goto out;
2427 }
2428
2429 if (!initial) {
2430 thisVf = new_affiliation_111->thisVf;
2431 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2432 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2433 new_affiliation_111->map[ld].policy[thisVf]) {
2434 dev_warn(&instance->pdev->dev, "SR-IOV: "
2435 "Got new LD/VF affiliation for scsi%d\n",
2436 instance->host->host_no);
2437 memcpy(instance->vf_affiliation_111,
2438 new_affiliation_111,
2439 sizeof(struct MR_LD_VF_AFFILIATION_111));
2440 retval = 1;
2441 goto out;
2442 }
2443 }
2444 out:
2445 if (new_affiliation_111) {
2446 dma_free_coherent(&instance->pdev->dev,
2447 sizeof(struct MR_LD_VF_AFFILIATION_111),
2448 new_affiliation_111,
2449 new_affiliation_111_h);
2450 }
2451
2452 megasas_return_cmd(instance, cmd);
2453
2454 return retval;
2455 }
2456
megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance, int initial)2457 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2458 int initial)
2459 {
2460 struct megasas_cmd *cmd;
2461 struct megasas_dcmd_frame *dcmd;
2462 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2463 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2464 dma_addr_t new_affiliation_h;
2465 int i, j, retval = 0, found = 0, doscan = 0;
2466 u8 thisVf;
2467
2468 cmd = megasas_get_cmd(instance);
2469
2470 if (!cmd) {
2471 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2472 "Failed to get cmd for scsi%d\n",
2473 instance->host->host_no);
2474 return -ENOMEM;
2475 }
2476
2477 dcmd = &cmd->frame->dcmd;
2478
2479 if (!instance->vf_affiliation) {
2480 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2481 "affiliation for scsi%d\n", instance->host->host_no);
2482 megasas_return_cmd(instance, cmd);
2483 return -ENOMEM;
2484 }
2485
2486 if (initial)
2487 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2488 sizeof(struct MR_LD_VF_AFFILIATION));
2489 else {
2490 new_affiliation =
2491 dma_alloc_coherent(&instance->pdev->dev,
2492 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2493 &new_affiliation_h, GFP_KERNEL);
2494 if (!new_affiliation) {
2495 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2496 "memory for new affiliation for scsi%d\n",
2497 instance->host->host_no);
2498 megasas_return_cmd(instance, cmd);
2499 return -ENOMEM;
2500 }
2501 }
2502
2503 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2504
2505 dcmd->cmd = MFI_CMD_DCMD;
2506 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2507 dcmd->sge_count = 1;
2508 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2509 dcmd->timeout = 0;
2510 dcmd->pad_0 = 0;
2511 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2512 sizeof(struct MR_LD_VF_AFFILIATION));
2513 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2514
2515 if (initial)
2516 dcmd->sgl.sge32[0].phys_addr =
2517 cpu_to_le32(instance->vf_affiliation_h);
2518 else
2519 dcmd->sgl.sge32[0].phys_addr =
2520 cpu_to_le32(new_affiliation_h);
2521
2522 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2523 sizeof(struct MR_LD_VF_AFFILIATION));
2524
2525 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2526 "scsi%d\n", instance->host->host_no);
2527
2528
2529 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2530 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2531 " failed with status 0x%x for scsi%d\n",
2532 dcmd->cmd_status, instance->host->host_no);
2533 retval = 1; /* Do a scan if we couldn't get affiliation */
2534 goto out;
2535 }
2536
2537 if (!initial) {
2538 if (!new_affiliation->ldCount) {
2539 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2540 "affiliation for passive path for scsi%d\n",
2541 instance->host->host_no);
2542 retval = 1;
2543 goto out;
2544 }
2545 newmap = new_affiliation->map;
2546 savedmap = instance->vf_affiliation->map;
2547 thisVf = new_affiliation->thisVf;
2548 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2549 found = 0;
2550 for (j = 0; j < instance->vf_affiliation->ldCount;
2551 j++) {
2552 if (newmap->ref.targetId ==
2553 savedmap->ref.targetId) {
2554 found = 1;
2555 if (newmap->policy[thisVf] !=
2556 savedmap->policy[thisVf]) {
2557 doscan = 1;
2558 goto out;
2559 }
2560 }
2561 savedmap = (struct MR_LD_VF_MAP *)
2562 ((unsigned char *)savedmap +
2563 savedmap->size);
2564 }
2565 if (!found && newmap->policy[thisVf] !=
2566 MR_LD_ACCESS_HIDDEN) {
2567 doscan = 1;
2568 goto out;
2569 }
2570 newmap = (struct MR_LD_VF_MAP *)
2571 ((unsigned char *)newmap + newmap->size);
2572 }
2573
2574 newmap = new_affiliation->map;
2575 savedmap = instance->vf_affiliation->map;
2576
2577 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2578 found = 0;
2579 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2580 if (savedmap->ref.targetId ==
2581 newmap->ref.targetId) {
2582 found = 1;
2583 if (savedmap->policy[thisVf] !=
2584 newmap->policy[thisVf]) {
2585 doscan = 1;
2586 goto out;
2587 }
2588 }
2589 newmap = (struct MR_LD_VF_MAP *)
2590 ((unsigned char *)newmap +
2591 newmap->size);
2592 }
2593 if (!found && savedmap->policy[thisVf] !=
2594 MR_LD_ACCESS_HIDDEN) {
2595 doscan = 1;
2596 goto out;
2597 }
2598 savedmap = (struct MR_LD_VF_MAP *)
2599 ((unsigned char *)savedmap +
2600 savedmap->size);
2601 }
2602 }
2603 out:
2604 if (doscan) {
2605 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2606 "affiliation for scsi%d\n", instance->host->host_no);
2607 memcpy(instance->vf_affiliation, new_affiliation,
2608 new_affiliation->size);
2609 retval = 1;
2610 }
2611
2612 if (new_affiliation)
2613 dma_free_coherent(&instance->pdev->dev,
2614 (MAX_LOGICAL_DRIVES + 1) *
2615 sizeof(struct MR_LD_VF_AFFILIATION),
2616 new_affiliation, new_affiliation_h);
2617 megasas_return_cmd(instance, cmd);
2618
2619 return retval;
2620 }
2621
2622 /* This function will get the current SR-IOV LD/VF affiliation */
megasas_get_ld_vf_affiliation(struct megasas_instance *instance, int initial)2623 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2624 int initial)
2625 {
2626 int retval;
2627
2628 if (instance->PlasmaFW111)
2629 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2630 else
2631 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2632 return retval;
2633 }
2634
2635 /* This function will tell FW to start the SR-IOV heartbeat */
megasas_sriov_start_heartbeat(struct megasas_instance *instance, int initial)2636 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2637 int initial)
2638 {
2639 struct megasas_cmd *cmd;
2640 struct megasas_dcmd_frame *dcmd;
2641 int retval = 0;
2642
2643 cmd = megasas_get_cmd(instance);
2644
2645 if (!cmd) {
2646 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2647 "Failed to get cmd for scsi%d\n",
2648 instance->host->host_no);
2649 return -ENOMEM;
2650 }
2651
2652 dcmd = &cmd->frame->dcmd;
2653
2654 if (initial) {
2655 instance->hb_host_mem =
2656 dma_alloc_coherent(&instance->pdev->dev,
2657 sizeof(struct MR_CTRL_HB_HOST_MEM),
2658 &instance->hb_host_mem_h,
2659 GFP_KERNEL);
2660 if (!instance->hb_host_mem) {
2661 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2662 " memory for heartbeat host memory for scsi%d\n",
2663 instance->host->host_no);
2664 retval = -ENOMEM;
2665 goto out;
2666 }
2667 }
2668
2669 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2670
2671 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2672 dcmd->cmd = MFI_CMD_DCMD;
2673 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2674 dcmd->sge_count = 1;
2675 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2676 dcmd->timeout = 0;
2677 dcmd->pad_0 = 0;
2678 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2679 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2680
2681 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2682 sizeof(struct MR_CTRL_HB_HOST_MEM));
2683
2684 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2685 instance->host->host_no);
2686
2687 if ((instance->adapter_type != MFI_SERIES) &&
2688 !instance->mask_interrupts)
2689 retval = megasas_issue_blocked_cmd(instance, cmd,
2690 MEGASAS_ROUTINE_WAIT_TIME_VF);
2691 else
2692 retval = megasas_issue_polled(instance, cmd);
2693
2694 if (retval) {
2695 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2696 "_MEM_ALLOC DCMD %s for scsi%d\n",
2697 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2698 "timed out" : "failed", instance->host->host_no);
2699 retval = 1;
2700 }
2701
2702 out:
2703 megasas_return_cmd(instance, cmd);
2704
2705 return retval;
2706 }
2707
2708 /* Handler for SR-IOV heartbeat */
megasas_sriov_heartbeat_handler(struct timer_list *t)2709 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2710 {
2711 struct megasas_instance *instance =
2712 from_timer(instance, t, sriov_heartbeat_timer);
2713
2714 if (instance->hb_host_mem->HB.fwCounter !=
2715 instance->hb_host_mem->HB.driverCounter) {
2716 instance->hb_host_mem->HB.driverCounter =
2717 instance->hb_host_mem->HB.fwCounter;
2718 mod_timer(&instance->sriov_heartbeat_timer,
2719 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2720 } else {
2721 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2722 "completed for scsi%d\n", instance->host->host_no);
2723 schedule_work(&instance->work_init);
2724 }
2725 }
2726
2727 /**
2728 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2729 * @instance: Adapter soft state
2730 *
2731 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2732 * complete all its outstanding commands. Returns error if one or more IOs
2733 * are pending after this time period. It also marks the controller dead.
2734 */
megasas_wait_for_outstanding(struct megasas_instance *instance)2735 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2736 {
2737 int i, sl, outstanding;
2738 u32 reset_index;
2739 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2740 unsigned long flags;
2741 struct list_head clist_local;
2742 struct megasas_cmd *reset_cmd;
2743 u32 fw_state;
2744
2745 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2746 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2747 __func__, __LINE__);
2748 return FAILED;
2749 }
2750
2751 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2752
2753 INIT_LIST_HEAD(&clist_local);
2754 spin_lock_irqsave(&instance->hba_lock, flags);
2755 list_splice_init(&instance->internal_reset_pending_q,
2756 &clist_local);
2757 spin_unlock_irqrestore(&instance->hba_lock, flags);
2758
2759 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2760 for (i = 0; i < wait_time; i++) {
2761 msleep(1000);
2762 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2763 break;
2764 }
2765
2766 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2767 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2768 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2769 return FAILED;
2770 }
2771
2772 reset_index = 0;
2773 while (!list_empty(&clist_local)) {
2774 reset_cmd = list_entry((&clist_local)->next,
2775 struct megasas_cmd, list);
2776 list_del_init(&reset_cmd->list);
2777 if (reset_cmd->scmd) {
2778 reset_cmd->scmd->result = DID_REQUEUE << 16;
2779 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2780 reset_index, reset_cmd,
2781 reset_cmd->scmd->cmnd[0]);
2782
2783 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2784 megasas_return_cmd(instance, reset_cmd);
2785 } else if (reset_cmd->sync_cmd) {
2786 dev_notice(&instance->pdev->dev, "%p synch cmds"
2787 "reset queue\n",
2788 reset_cmd);
2789
2790 reset_cmd->cmd_status_drv = DCMD_INIT;
2791 instance->instancet->fire_cmd(instance,
2792 reset_cmd->frame_phys_addr,
2793 0, instance->reg_set);
2794 } else {
2795 dev_notice(&instance->pdev->dev, "%p unexpected"
2796 "cmds lst\n",
2797 reset_cmd);
2798 }
2799 reset_index++;
2800 }
2801
2802 return SUCCESS;
2803 }
2804
2805 for (i = 0; i < resetwaittime; i++) {
2806 outstanding = atomic_read(&instance->fw_outstanding);
2807
2808 if (!outstanding)
2809 break;
2810
2811 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2812 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2813 "commands to complete\n",i,outstanding);
2814 /*
2815 * Call cmd completion routine. Cmd to be
2816 * be completed directly without depending on isr.
2817 */
2818 megasas_complete_cmd_dpc((unsigned long)instance);
2819 }
2820
2821 msleep(1000);
2822 }
2823
2824 i = 0;
2825 outstanding = atomic_read(&instance->fw_outstanding);
2826 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2827
2828 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2829 goto no_outstanding;
2830
2831 if (instance->disableOnlineCtrlReset)
2832 goto kill_hba_and_failed;
2833 do {
2834 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2835 dev_info(&instance->pdev->dev,
2836 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2837 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2838 if (i == 3)
2839 goto kill_hba_and_failed;
2840 megasas_do_ocr(instance);
2841
2842 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2843 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2844 __func__, __LINE__);
2845 return FAILED;
2846 }
2847 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2848 __func__, __LINE__);
2849
2850 for (sl = 0; sl < 10; sl++)
2851 msleep(500);
2852
2853 outstanding = atomic_read(&instance->fw_outstanding);
2854
2855 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2856 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2857 goto no_outstanding;
2858 }
2859 i++;
2860 } while (i <= 3);
2861
2862 no_outstanding:
2863
2864 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2865 __func__, __LINE__);
2866 return SUCCESS;
2867
2868 kill_hba_and_failed:
2869
2870 /* Reset not supported, kill adapter */
2871 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2872 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2873 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2874 atomic_read(&instance->fw_outstanding));
2875 megasas_dump_pending_frames(instance);
2876 megaraid_sas_kill_hba(instance);
2877
2878 return FAILED;
2879 }
2880
2881 /**
2882 * megasas_generic_reset - Generic reset routine
2883 * @scmd: Mid-layer SCSI command
2884 *
2885 * This routine implements a generic reset handler for device, bus and host
2886 * reset requests. Device, bus and host specific reset handlers can use this
2887 * function after they do their specific tasks.
2888 */
megasas_generic_reset(struct scsi_cmnd *scmd)2889 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2890 {
2891 int ret_val;
2892 struct megasas_instance *instance;
2893
2894 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2895
2896 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2897 scmd->cmnd[0], scmd->retries);
2898
2899 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2900 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2901 return FAILED;
2902 }
2903
2904 ret_val = megasas_wait_for_outstanding(instance);
2905 if (ret_val == SUCCESS)
2906 dev_notice(&instance->pdev->dev, "reset successful\n");
2907 else
2908 dev_err(&instance->pdev->dev, "failed to do reset\n");
2909
2910 return ret_val;
2911 }
2912
2913 /**
2914 * megasas_reset_timer - quiesce the adapter if required
2915 * @scmd: scsi cmnd
2916 *
2917 * Sets the FW busy flag and reduces the host->can_queue if the
2918 * cmd has not been completed within the timeout period.
2919 */
2920 static enum
megasas_reset_timer(struct scsi_cmnd *scmd)2921 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2922 {
2923 struct megasas_instance *instance;
2924 unsigned long flags;
2925
2926 if (time_after(jiffies, scmd->jiffies_at_alloc +
2927 (scmd_timeout * 2) * HZ)) {
2928 return BLK_EH_DONE;
2929 }
2930
2931 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2932 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2933 /* FW is busy, throttle IO */
2934 spin_lock_irqsave(instance->host->host_lock, flags);
2935
2936 instance->host->can_queue = instance->throttlequeuedepth;
2937 instance->last_time = jiffies;
2938 instance->flag |= MEGASAS_FW_BUSY;
2939
2940 spin_unlock_irqrestore(instance->host->host_lock, flags);
2941 }
2942 return BLK_EH_RESET_TIMER;
2943 }
2944
2945 /**
2946 * megasas_dump - This function will print hexdump of provided buffer.
2947 * @buf: Buffer to be dumped
2948 * @sz: Size in bytes
2949 * @format: Different formats of dumping e.g. format=n will
2950 * cause only 'n' 32 bit words to be dumped in a single
2951 * line.
2952 */
2953 inline void
megasas_dump(void *buf, int sz, int format)2954 megasas_dump(void *buf, int sz, int format)
2955 {
2956 int i;
2957 __le32 *buf_loc = (__le32 *)buf;
2958
2959 for (i = 0; i < (sz / sizeof(__le32)); i++) {
2960 if ((i % format) == 0) {
2961 if (i != 0)
2962 printk(KERN_CONT "\n");
2963 printk(KERN_CONT "%08x: ", (i * 4));
2964 }
2965 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2966 }
2967 printk(KERN_CONT "\n");
2968 }
2969
2970 /**
2971 * megasas_dump_reg_set - This function will print hexdump of register set
2972 * @reg_set: Register set to be dumped
2973 */
2974 inline void
megasas_dump_reg_set(void __iomem *reg_set)2975 megasas_dump_reg_set(void __iomem *reg_set)
2976 {
2977 unsigned int i, sz = 256;
2978 u32 __iomem *reg = (u32 __iomem *)reg_set;
2979
2980 for (i = 0; i < (sz / sizeof(u32)); i++)
2981 printk("%08x: %08x\n", (i * 4), readl(®[i]));
2982 }
2983
2984 /**
2985 * megasas_dump_fusion_io - This function will print key details
2986 * of SCSI IO
2987 * @scmd: SCSI command pointer of SCSI IO
2988 */
2989 void
megasas_dump_fusion_io(struct scsi_cmnd *scmd)2990 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
2991 {
2992 struct megasas_cmd_fusion *cmd;
2993 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2994 struct megasas_instance *instance;
2995
2996 cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr;
2997 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2998
2999 scmd_printk(KERN_INFO, scmd,
3000 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n",
3001 scmd, scmd->retries, scmd->allowed);
3002 scsi_print_command(scmd);
3003
3004 if (cmd) {
3005 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
3006 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
3007 scmd_printk(KERN_INFO, scmd,
3008 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n",
3009 req_desc->SCSIIO.RequestFlags,
3010 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
3011 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
3012
3013 printk(KERN_INFO "IO request frame:\n");
3014 megasas_dump(cmd->io_request,
3015 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
3016 printk(KERN_INFO "Chain frame:\n");
3017 megasas_dump(cmd->sg_frame,
3018 instance->max_chain_frame_sz, 8);
3019 }
3020
3021 }
3022
3023 /*
3024 * megasas_dump_sys_regs - This function will dump system registers through
3025 * sysfs.
3026 * @reg_set: Pointer to System register set.
3027 * @buf: Buffer to which output is to be written.
3028 * @return: Number of bytes written to buffer.
3029 */
3030 static inline ssize_t
megasas_dump_sys_regs(void __iomem *reg_set, char *buf)3031 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
3032 {
3033 unsigned int i, sz = 256;
3034 int bytes_wrote = 0;
3035 char *loc = (char *)buf;
3036 u32 __iomem *reg = (u32 __iomem *)reg_set;
3037
3038 for (i = 0; i < sz / sizeof(u32); i++) {
3039 bytes_wrote += scnprintf(loc + bytes_wrote,
3040 PAGE_SIZE - bytes_wrote,
3041 "%08x: %08x\n", (i * 4),
3042 readl(®[i]));
3043 }
3044 return bytes_wrote;
3045 }
3046
3047 /**
3048 * megasas_reset_bus_host - Bus & host reset handler entry point
3049 * @scmd: Mid-layer SCSI command
3050 */
megasas_reset_bus_host(struct scsi_cmnd *scmd)3051 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3052 {
3053 int ret;
3054 struct megasas_instance *instance;
3055
3056 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3057
3058 scmd_printk(KERN_INFO, scmd,
3059 "OCR is requested due to IO timeout!!\n");
3060
3061 scmd_printk(KERN_INFO, scmd,
3062 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n",
3063 scmd->device->host->shost_state,
3064 scsi_host_busy(scmd->device->host),
3065 atomic_read(&instance->fw_outstanding));
3066 /*
3067 * First wait for all commands to complete
3068 */
3069 if (instance->adapter_type == MFI_SERIES) {
3070 ret = megasas_generic_reset(scmd);
3071 } else {
3072 megasas_dump_fusion_io(scmd);
3073 ret = megasas_reset_fusion(scmd->device->host,
3074 SCSIIO_TIMEOUT_OCR);
3075 }
3076
3077 return ret;
3078 }
3079
3080 /**
3081 * megasas_task_abort - Issues task abort request to firmware
3082 * (supported only for fusion adapters)
3083 * @scmd: SCSI command pointer
3084 */
megasas_task_abort(struct scsi_cmnd *scmd)3085 static int megasas_task_abort(struct scsi_cmnd *scmd)
3086 {
3087 int ret;
3088 struct megasas_instance *instance;
3089
3090 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3091
3092 if (instance->adapter_type != MFI_SERIES)
3093 ret = megasas_task_abort_fusion(scmd);
3094 else {
3095 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3096 ret = FAILED;
3097 }
3098
3099 return ret;
3100 }
3101
3102 /**
3103 * megasas_reset_target: Issues target reset request to firmware
3104 * (supported only for fusion adapters)
3105 * @scmd: SCSI command pointer
3106 */
megasas_reset_target(struct scsi_cmnd *scmd)3107 static int megasas_reset_target(struct scsi_cmnd *scmd)
3108 {
3109 int ret;
3110 struct megasas_instance *instance;
3111
3112 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3113
3114 if (instance->adapter_type != MFI_SERIES)
3115 ret = megasas_reset_target_fusion(scmd);
3116 else {
3117 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3118 ret = FAILED;
3119 }
3120
3121 return ret;
3122 }
3123
3124 /**
3125 * megasas_bios_param - Returns disk geometry for a disk
3126 * @sdev: device handle
3127 * @bdev: block device
3128 * @capacity: drive capacity
3129 * @geom: geometry parameters
3130 */
3131 static int
megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[])3132 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3133 sector_t capacity, int geom[])
3134 {
3135 int heads;
3136 int sectors;
3137 sector_t cylinders;
3138 unsigned long tmp;
3139
3140 /* Default heads (64) & sectors (32) */
3141 heads = 64;
3142 sectors = 32;
3143
3144 tmp = heads * sectors;
3145 cylinders = capacity;
3146
3147 sector_div(cylinders, tmp);
3148
3149 /*
3150 * Handle extended translation size for logical drives > 1Gb
3151 */
3152
3153 if (capacity >= 0x200000) {
3154 heads = 255;
3155 sectors = 63;
3156 tmp = heads*sectors;
3157 cylinders = capacity;
3158 sector_div(cylinders, tmp);
3159 }
3160
3161 geom[0] = heads;
3162 geom[1] = sectors;
3163 geom[2] = cylinders;
3164
3165 return 0;
3166 }
3167
megasas_map_queues(struct Scsi_Host *shost)3168 static int megasas_map_queues(struct Scsi_Host *shost)
3169 {
3170 struct megasas_instance *instance;
3171
3172 instance = (struct megasas_instance *)shost->hostdata;
3173
3174 if (shost->nr_hw_queues == 1)
3175 return 0;
3176
3177 return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT],
3178 instance->pdev, instance->low_latency_index_start);
3179 }
3180
3181 static void megasas_aen_polling(struct work_struct *work);
3182
3183 /**
3184 * megasas_service_aen - Processes an event notification
3185 * @instance: Adapter soft state
3186 * @cmd: AEN command completed by the ISR
3187 *
3188 * For AEN, driver sends a command down to FW that is held by the FW till an
3189 * event occurs. When an event of interest occurs, FW completes the command
3190 * that it was previously holding.
3191 *
3192 * This routines sends SIGIO signal to processes that have registered with the
3193 * driver for AEN.
3194 */
3195 static void
megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)3196 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3197 {
3198 unsigned long flags;
3199
3200 /*
3201 * Don't signal app if it is just an aborted previously registered aen
3202 */
3203 if ((!cmd->abort_aen) && (instance->unload == 0)) {
3204 spin_lock_irqsave(&poll_aen_lock, flags);
3205 megasas_poll_wait_aen = 1;
3206 spin_unlock_irqrestore(&poll_aen_lock, flags);
3207 wake_up(&megasas_poll_wait);
3208 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3209 }
3210 else
3211 cmd->abort_aen = 0;
3212
3213 instance->aen_cmd = NULL;
3214
3215 megasas_return_cmd(instance, cmd);
3216
3217 if ((instance->unload == 0) &&
3218 ((instance->issuepend_done == 1))) {
3219 struct megasas_aen_event *ev;
3220
3221 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3222 if (!ev) {
3223 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3224 } else {
3225 ev->instance = instance;
3226 instance->ev = ev;
3227 INIT_DELAYED_WORK(&ev->hotplug_work,
3228 megasas_aen_polling);
3229 schedule_delayed_work(&ev->hotplug_work, 0);
3230 }
3231 }
3232 }
3233
3234 static ssize_t
fw_crash_buffer_store(struct device *cdev, struct device_attribute *attr, const char *buf, size_t count)3235 fw_crash_buffer_store(struct device *cdev,
3236 struct device_attribute *attr, const char *buf, size_t count)
3237 {
3238 struct Scsi_Host *shost = class_to_shost(cdev);
3239 struct megasas_instance *instance =
3240 (struct megasas_instance *) shost->hostdata;
3241 int val = 0;
3242
3243 if (kstrtoint(buf, 0, &val) != 0)
3244 return -EINVAL;
3245
3246 mutex_lock(&instance->crashdump_lock);
3247 instance->fw_crash_buffer_offset = val;
3248 mutex_unlock(&instance->crashdump_lock);
3249 return strlen(buf);
3250 }
3251
3252 static ssize_t
fw_crash_buffer_show(struct device *cdev, struct device_attribute *attr, char *buf)3253 fw_crash_buffer_show(struct device *cdev,
3254 struct device_attribute *attr, char *buf)
3255 {
3256 struct Scsi_Host *shost = class_to_shost(cdev);
3257 struct megasas_instance *instance =
3258 (struct megasas_instance *) shost->hostdata;
3259 u32 size;
3260 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3261 unsigned long chunk_left_bytes;
3262 unsigned long src_addr;
3263 u32 buff_offset;
3264
3265 mutex_lock(&instance->crashdump_lock);
3266 buff_offset = instance->fw_crash_buffer_offset;
3267 if (!instance->crash_dump_buf ||
3268 !((instance->fw_crash_state == AVAILABLE) ||
3269 (instance->fw_crash_state == COPYING))) {
3270 dev_err(&instance->pdev->dev,
3271 "Firmware crash dump is not available\n");
3272 mutex_unlock(&instance->crashdump_lock);
3273 return -EINVAL;
3274 }
3275
3276 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3277 dev_err(&instance->pdev->dev,
3278 "Firmware crash dump offset is out of range\n");
3279 mutex_unlock(&instance->crashdump_lock);
3280 return 0;
3281 }
3282
3283 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3284 chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3285 size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3286 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3287
3288 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3289 (buff_offset % dmachunk);
3290 memcpy(buf, (void *)src_addr, size);
3291 mutex_unlock(&instance->crashdump_lock);
3292
3293 return size;
3294 }
3295
3296 static ssize_t
fw_crash_buffer_size_show(struct device *cdev, struct device_attribute *attr, char *buf)3297 fw_crash_buffer_size_show(struct device *cdev,
3298 struct device_attribute *attr, char *buf)
3299 {
3300 struct Scsi_Host *shost = class_to_shost(cdev);
3301 struct megasas_instance *instance =
3302 (struct megasas_instance *) shost->hostdata;
3303
3304 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3305 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3306 }
3307
3308 static ssize_t
fw_crash_state_store(struct device *cdev, struct device_attribute *attr, const char *buf, size_t count)3309 fw_crash_state_store(struct device *cdev,
3310 struct device_attribute *attr, const char *buf, size_t count)
3311 {
3312 struct Scsi_Host *shost = class_to_shost(cdev);
3313 struct megasas_instance *instance =
3314 (struct megasas_instance *) shost->hostdata;
3315 int val = 0;
3316
3317 if (kstrtoint(buf, 0, &val) != 0)
3318 return -EINVAL;
3319
3320 if ((val <= AVAILABLE || val > COPY_ERROR)) {
3321 dev_err(&instance->pdev->dev, "application updates invalid "
3322 "firmware crash state\n");
3323 return -EINVAL;
3324 }
3325
3326 instance->fw_crash_state = val;
3327
3328 if ((val == COPIED) || (val == COPY_ERROR)) {
3329 mutex_lock(&instance->crashdump_lock);
3330 megasas_free_host_crash_buffer(instance);
3331 mutex_unlock(&instance->crashdump_lock);
3332 if (val == COPY_ERROR)
3333 dev_info(&instance->pdev->dev, "application failed to "
3334 "copy Firmware crash dump\n");
3335 else
3336 dev_info(&instance->pdev->dev, "Firmware crash dump "
3337 "copied successfully\n");
3338 }
3339 return strlen(buf);
3340 }
3341
3342 static ssize_t
fw_crash_state_show(struct device *cdev, struct device_attribute *attr, char *buf)3343 fw_crash_state_show(struct device *cdev,
3344 struct device_attribute *attr, char *buf)
3345 {
3346 struct Scsi_Host *shost = class_to_shost(cdev);
3347 struct megasas_instance *instance =
3348 (struct megasas_instance *) shost->hostdata;
3349
3350 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3351 }
3352
3353 static ssize_t
page_size_show(struct device *cdev, struct device_attribute *attr, char *buf)3354 page_size_show(struct device *cdev,
3355 struct device_attribute *attr, char *buf)
3356 {
3357 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3358 }
3359
3360 static ssize_t
ldio_outstanding_show(struct device *cdev, struct device_attribute *attr, char *buf)3361 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3362 char *buf)
3363 {
3364 struct Scsi_Host *shost = class_to_shost(cdev);
3365 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3366
3367 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3368 }
3369
3370 static ssize_t
fw_cmds_outstanding_show(struct device *cdev, struct device_attribute *attr, char *buf)3371 fw_cmds_outstanding_show(struct device *cdev,
3372 struct device_attribute *attr, char *buf)
3373 {
3374 struct Scsi_Host *shost = class_to_shost(cdev);
3375 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3376
3377 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3378 }
3379
3380 static ssize_t
enable_sdev_max_qd_show(struct device *cdev, struct device_attribute *attr, char *buf)3381 enable_sdev_max_qd_show(struct device *cdev,
3382 struct device_attribute *attr, char *buf)
3383 {
3384 struct Scsi_Host *shost = class_to_shost(cdev);
3385 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3386
3387 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3388 }
3389
3390 static ssize_t
enable_sdev_max_qd_store(struct device *cdev, struct device_attribute *attr, const char *buf, size_t count)3391 enable_sdev_max_qd_store(struct device *cdev,
3392 struct device_attribute *attr, const char *buf, size_t count)
3393 {
3394 struct Scsi_Host *shost = class_to_shost(cdev);
3395 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3396 u32 val = 0;
3397 bool is_target_prop;
3398 int ret_target_prop = DCMD_FAILED;
3399 struct scsi_device *sdev;
3400
3401 if (kstrtou32(buf, 0, &val) != 0) {
3402 pr_err("megasas: could not set enable_sdev_max_qd\n");
3403 return -EINVAL;
3404 }
3405
3406 mutex_lock(&instance->reset_mutex);
3407 if (val)
3408 instance->enable_sdev_max_qd = true;
3409 else
3410 instance->enable_sdev_max_qd = false;
3411
3412 shost_for_each_device(sdev, shost) {
3413 ret_target_prop = megasas_get_target_prop(instance, sdev);
3414 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3415 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3416 }
3417 mutex_unlock(&instance->reset_mutex);
3418
3419 return strlen(buf);
3420 }
3421
3422 static ssize_t
dump_system_regs_show(struct device *cdev, struct device_attribute *attr, char *buf)3423 dump_system_regs_show(struct device *cdev,
3424 struct device_attribute *attr, char *buf)
3425 {
3426 struct Scsi_Host *shost = class_to_shost(cdev);
3427 struct megasas_instance *instance =
3428 (struct megasas_instance *)shost->hostdata;
3429
3430 return megasas_dump_sys_regs(instance->reg_set, buf);
3431 }
3432
3433 static ssize_t
raid_map_id_show(struct device *cdev, struct device_attribute *attr, char *buf)3434 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3435 char *buf)
3436 {
3437 struct Scsi_Host *shost = class_to_shost(cdev);
3438 struct megasas_instance *instance =
3439 (struct megasas_instance *)shost->hostdata;
3440
3441 return snprintf(buf, PAGE_SIZE, "%ld\n",
3442 (unsigned long)instance->map_id);
3443 }
3444
3445 static DEVICE_ATTR_RW(fw_crash_buffer);
3446 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3447 static DEVICE_ATTR_RW(fw_crash_state);
3448 static DEVICE_ATTR_RO(page_size);
3449 static DEVICE_ATTR_RO(ldio_outstanding);
3450 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3451 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3452 static DEVICE_ATTR_RO(dump_system_regs);
3453 static DEVICE_ATTR_RO(raid_map_id);
3454
3455 static struct device_attribute *megaraid_host_attrs[] = {
3456 &dev_attr_fw_crash_buffer_size,
3457 &dev_attr_fw_crash_buffer,
3458 &dev_attr_fw_crash_state,
3459 &dev_attr_page_size,
3460 &dev_attr_ldio_outstanding,
3461 &dev_attr_fw_cmds_outstanding,
3462 &dev_attr_enable_sdev_max_qd,
3463 &dev_attr_dump_system_regs,
3464 &dev_attr_raid_map_id,
3465 NULL,
3466 };
3467
3468 /*
3469 * Scsi host template for megaraid_sas driver
3470 */
3471 static struct scsi_host_template megasas_template = {
3472
3473 .module = THIS_MODULE,
3474 .name = "Avago SAS based MegaRAID driver",
3475 .proc_name = "megaraid_sas",
3476 .slave_configure = megasas_slave_configure,
3477 .slave_alloc = megasas_slave_alloc,
3478 .slave_destroy = megasas_slave_destroy,
3479 .queuecommand = megasas_queue_command,
3480 .eh_target_reset_handler = megasas_reset_target,
3481 .eh_abort_handler = megasas_task_abort,
3482 .eh_host_reset_handler = megasas_reset_bus_host,
3483 .eh_timed_out = megasas_reset_timer,
3484 .shost_attrs = megaraid_host_attrs,
3485 .bios_param = megasas_bios_param,
3486 .map_queues = megasas_map_queues,
3487 .change_queue_depth = scsi_change_queue_depth,
3488 .max_segment_size = 0xffffffff,
3489 };
3490
3491 /**
3492 * megasas_complete_int_cmd - Completes an internal command
3493 * @instance: Adapter soft state
3494 * @cmd: Command to be completed
3495 *
3496 * The megasas_issue_blocked_cmd() function waits for a command to complete
3497 * after it issues a command. This function wakes up that waiting routine by
3498 * calling wake_up() on the wait queue.
3499 */
3500 static void
megasas_complete_int_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)3501 megasas_complete_int_cmd(struct megasas_instance *instance,
3502 struct megasas_cmd *cmd)
3503 {
3504 if (cmd->cmd_status_drv == DCMD_INIT)
3505 cmd->cmd_status_drv =
3506 (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3507 DCMD_SUCCESS : DCMD_FAILED;
3508
3509 wake_up(&instance->int_cmd_wait_q);
3510 }
3511
3512 /**
3513 * megasas_complete_abort - Completes aborting a command
3514 * @instance: Adapter soft state
3515 * @cmd: Cmd that was issued to abort another cmd
3516 *
3517 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3518 * after it issues an abort on a previously issued command. This function
3519 * wakes up all functions waiting on the same wait queue.
3520 */
3521 static void
megasas_complete_abort(struct megasas_instance *instance, struct megasas_cmd *cmd)3522 megasas_complete_abort(struct megasas_instance *instance,
3523 struct megasas_cmd *cmd)
3524 {
3525 if (cmd->sync_cmd) {
3526 cmd->sync_cmd = 0;
3527 cmd->cmd_status_drv = DCMD_SUCCESS;
3528 wake_up(&instance->abort_cmd_wait_q);
3529 }
3530 }
3531
3532 static void
megasas_set_ld_removed_by_fw(struct megasas_instance *instance)3533 megasas_set_ld_removed_by_fw(struct megasas_instance *instance)
3534 {
3535 uint i;
3536
3537 for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) {
3538 if (instance->ld_ids_prev[i] != 0xff &&
3539 instance->ld_ids_from_raidmap[i] == 0xff) {
3540 if (megasas_dbg_lvl & LD_PD_DEBUG)
3541 dev_info(&instance->pdev->dev,
3542 "LD target ID %d removed from RAID map\n", i);
3543 instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED;
3544 }
3545 }
3546 }
3547
3548 /**
3549 * megasas_complete_cmd - Completes a command
3550 * @instance: Adapter soft state
3551 * @cmd: Command to be completed
3552 * @alt_status: If non-zero, use this value as status to
3553 * SCSI mid-layer instead of the value returned
3554 * by the FW. This should be used if caller wants
3555 * an alternate status (as in the case of aborted
3556 * commands)
3557 */
3558 void
megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, u8 alt_status)3559 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3560 u8 alt_status)
3561 {
3562 int exception = 0;
3563 struct megasas_header *hdr = &cmd->frame->hdr;
3564 unsigned long flags;
3565 struct fusion_context *fusion = instance->ctrl_context;
3566 u32 opcode, status;
3567
3568 /* flag for the retry reset */
3569 cmd->retry_for_fw_reset = 0;
3570
3571 if (cmd->scmd)
3572 cmd->scmd->SCp.ptr = NULL;
3573
3574 switch (hdr->cmd) {
3575 case MFI_CMD_INVALID:
3576 /* Some older 1068 controller FW may keep a pended
3577 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3578 when booting the kdump kernel. Ignore this command to
3579 prevent a kernel panic on shutdown of the kdump kernel. */
3580 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3581 "completed\n");
3582 dev_warn(&instance->pdev->dev, "If you have a controller "
3583 "other than PERC5, please upgrade your firmware\n");
3584 break;
3585 case MFI_CMD_PD_SCSI_IO:
3586 case MFI_CMD_LD_SCSI_IO:
3587
3588 /*
3589 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3590 * issued either through an IO path or an IOCTL path. If it
3591 * was via IOCTL, we will send it to internal completion.
3592 */
3593 if (cmd->sync_cmd) {
3594 cmd->sync_cmd = 0;
3595 megasas_complete_int_cmd(instance, cmd);
3596 break;
3597 }
3598 fallthrough;
3599
3600 case MFI_CMD_LD_READ:
3601 case MFI_CMD_LD_WRITE:
3602
3603 if (alt_status) {
3604 cmd->scmd->result = alt_status << 16;
3605 exception = 1;
3606 }
3607
3608 if (exception) {
3609
3610 atomic_dec(&instance->fw_outstanding);
3611
3612 scsi_dma_unmap(cmd->scmd);
3613 cmd->scmd->scsi_done(cmd->scmd);
3614 megasas_return_cmd(instance, cmd);
3615
3616 break;
3617 }
3618
3619 switch (hdr->cmd_status) {
3620
3621 case MFI_STAT_OK:
3622 cmd->scmd->result = DID_OK << 16;
3623 break;
3624
3625 case MFI_STAT_SCSI_IO_FAILED:
3626 case MFI_STAT_LD_INIT_IN_PROGRESS:
3627 cmd->scmd->result =
3628 (DID_ERROR << 16) | hdr->scsi_status;
3629 break;
3630
3631 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3632
3633 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3634
3635 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3636 memset(cmd->scmd->sense_buffer, 0,
3637 SCSI_SENSE_BUFFERSIZE);
3638 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3639 hdr->sense_len);
3640
3641 cmd->scmd->result |= DRIVER_SENSE << 24;
3642 }
3643
3644 break;
3645
3646 case MFI_STAT_LD_OFFLINE:
3647 case MFI_STAT_DEVICE_NOT_FOUND:
3648 cmd->scmd->result = DID_BAD_TARGET << 16;
3649 break;
3650
3651 default:
3652 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3653 hdr->cmd_status);
3654 cmd->scmd->result = DID_ERROR << 16;
3655 break;
3656 }
3657
3658 atomic_dec(&instance->fw_outstanding);
3659
3660 scsi_dma_unmap(cmd->scmd);
3661 cmd->scmd->scsi_done(cmd->scmd);
3662 megasas_return_cmd(instance, cmd);
3663
3664 break;
3665
3666 case MFI_CMD_SMP:
3667 case MFI_CMD_STP:
3668 case MFI_CMD_NVME:
3669 case MFI_CMD_TOOLBOX:
3670 megasas_complete_int_cmd(instance, cmd);
3671 break;
3672
3673 case MFI_CMD_DCMD:
3674 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3675 /* Check for LD map update */
3676 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3677 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3678 fusion->fast_path_io = 0;
3679 spin_lock_irqsave(instance->host->host_lock, flags);
3680 status = cmd->frame->hdr.cmd_status;
3681 instance->map_update_cmd = NULL;
3682 if (status != MFI_STAT_OK) {
3683 if (status != MFI_STAT_NOT_FOUND)
3684 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3685 cmd->frame->hdr.cmd_status);
3686 else {
3687 megasas_return_cmd(instance, cmd);
3688 spin_unlock_irqrestore(
3689 instance->host->host_lock,
3690 flags);
3691 break;
3692 }
3693 }
3694
3695 megasas_return_cmd(instance, cmd);
3696
3697 /*
3698 * Set fast path IO to ZERO.
3699 * Validate Map will set proper value.
3700 * Meanwhile all IOs will go as LD IO.
3701 */
3702 if (status == MFI_STAT_OK &&
3703 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3704 instance->map_id++;
3705 fusion->fast_path_io = 1;
3706 } else {
3707 fusion->fast_path_io = 0;
3708 }
3709
3710 if (instance->adapter_type >= INVADER_SERIES)
3711 megasas_set_ld_removed_by_fw(instance);
3712
3713 megasas_sync_map_info(instance);
3714 spin_unlock_irqrestore(instance->host->host_lock,
3715 flags);
3716
3717 break;
3718 }
3719 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3720 opcode == MR_DCMD_CTRL_EVENT_GET) {
3721 spin_lock_irqsave(&poll_aen_lock, flags);
3722 megasas_poll_wait_aen = 0;
3723 spin_unlock_irqrestore(&poll_aen_lock, flags);
3724 }
3725
3726 /* FW has an updated PD sequence */
3727 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3728 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3729
3730 spin_lock_irqsave(instance->host->host_lock, flags);
3731 status = cmd->frame->hdr.cmd_status;
3732 instance->jbod_seq_cmd = NULL;
3733 megasas_return_cmd(instance, cmd);
3734
3735 if (status == MFI_STAT_OK) {
3736 instance->pd_seq_map_id++;
3737 /* Re-register a pd sync seq num cmd */
3738 if (megasas_sync_pd_seq_num(instance, true))
3739 instance->use_seqnum_jbod_fp = false;
3740 } else
3741 instance->use_seqnum_jbod_fp = false;
3742
3743 spin_unlock_irqrestore(instance->host->host_lock, flags);
3744 break;
3745 }
3746
3747 /*
3748 * See if got an event notification
3749 */
3750 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3751 megasas_service_aen(instance, cmd);
3752 else
3753 megasas_complete_int_cmd(instance, cmd);
3754
3755 break;
3756
3757 case MFI_CMD_ABORT:
3758 /*
3759 * Cmd issued to abort another cmd returned
3760 */
3761 megasas_complete_abort(instance, cmd);
3762 break;
3763
3764 default:
3765 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3766 hdr->cmd);
3767 megasas_complete_int_cmd(instance, cmd);
3768 break;
3769 }
3770 }
3771
3772 /**
3773 * megasas_issue_pending_cmds_again - issue all pending cmds
3774 * in FW again because of the fw reset
3775 * @instance: Adapter soft state
3776 */
3777 static inline void
megasas_issue_pending_cmds_again(struct megasas_instance *instance)3778 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3779 {
3780 struct megasas_cmd *cmd;
3781 struct list_head clist_local;
3782 union megasas_evt_class_locale class_locale;
3783 unsigned long flags;
3784 u32 seq_num;
3785
3786 INIT_LIST_HEAD(&clist_local);
3787 spin_lock_irqsave(&instance->hba_lock, flags);
3788 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3789 spin_unlock_irqrestore(&instance->hba_lock, flags);
3790
3791 while (!list_empty(&clist_local)) {
3792 cmd = list_entry((&clist_local)->next,
3793 struct megasas_cmd, list);
3794 list_del_init(&cmd->list);
3795
3796 if (cmd->sync_cmd || cmd->scmd) {
3797 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3798 "detected to be pending while HBA reset\n",
3799 cmd, cmd->scmd, cmd->sync_cmd);
3800
3801 cmd->retry_for_fw_reset++;
3802
3803 if (cmd->retry_for_fw_reset == 3) {
3804 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3805 "was tried multiple times during reset."
3806 "Shutting down the HBA\n",
3807 cmd, cmd->scmd, cmd->sync_cmd);
3808 instance->instancet->disable_intr(instance);
3809 atomic_set(&instance->fw_reset_no_pci_access, 1);
3810 megaraid_sas_kill_hba(instance);
3811 return;
3812 }
3813 }
3814
3815 if (cmd->sync_cmd == 1) {
3816 if (cmd->scmd) {
3817 dev_notice(&instance->pdev->dev, "unexpected"
3818 "cmd attached to internal command!\n");
3819 }
3820 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3821 "on the internal reset queue,"
3822 "issue it again.\n", cmd);
3823 cmd->cmd_status_drv = DCMD_INIT;
3824 instance->instancet->fire_cmd(instance,
3825 cmd->frame_phys_addr,
3826 0, instance->reg_set);
3827 } else if (cmd->scmd) {
3828 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3829 "detected on the internal queue, issue again.\n",
3830 cmd, cmd->scmd->cmnd[0]);
3831
3832 atomic_inc(&instance->fw_outstanding);
3833 instance->instancet->fire_cmd(instance,
3834 cmd->frame_phys_addr,
3835 cmd->frame_count-1, instance->reg_set);
3836 } else {
3837 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3838 "internal reset defer list while re-issue!!\n",
3839 cmd);
3840 }
3841 }
3842
3843 if (instance->aen_cmd) {
3844 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3845 megasas_return_cmd(instance, instance->aen_cmd);
3846
3847 instance->aen_cmd = NULL;
3848 }
3849
3850 /*
3851 * Initiate AEN (Asynchronous Event Notification)
3852 */
3853 seq_num = instance->last_seq_num;
3854 class_locale.members.reserved = 0;
3855 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3856 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3857
3858 megasas_register_aen(instance, seq_num, class_locale.word);
3859 }
3860
3861 /*
3862 * Move the internal reset pending commands to a deferred queue.
3863 *
3864 * We move the commands pending at internal reset time to a
3865 * pending queue. This queue would be flushed after successful
3866 * completion of the internal reset sequence. if the internal reset
3867 * did not complete in time, the kernel reset handler would flush
3868 * these commands.
3869 */
3870 static void
megasas_internal_reset_defer_cmds(struct megasas_instance *instance)3871 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3872 {
3873 struct megasas_cmd *cmd;
3874 int i;
3875 u16 max_cmd = instance->max_fw_cmds;
3876 u32 defer_index;
3877 unsigned long flags;
3878
3879 defer_index = 0;
3880 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3881 for (i = 0; i < max_cmd; i++) {
3882 cmd = instance->cmd_list[i];
3883 if (cmd->sync_cmd == 1 || cmd->scmd) {
3884 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3885 "on the defer queue as internal\n",
3886 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3887
3888 if (!list_empty(&cmd->list)) {
3889 dev_notice(&instance->pdev->dev, "ERROR while"
3890 " moving this cmd:%p, %d %p, it was"
3891 "discovered on some list?\n",
3892 cmd, cmd->sync_cmd, cmd->scmd);
3893
3894 list_del_init(&cmd->list);
3895 }
3896 defer_index++;
3897 list_add_tail(&cmd->list,
3898 &instance->internal_reset_pending_q);
3899 }
3900 }
3901 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3902 }
3903
3904
3905 static void
process_fw_state_change_wq(struct work_struct *work)3906 process_fw_state_change_wq(struct work_struct *work)
3907 {
3908 struct megasas_instance *instance =
3909 container_of(work, struct megasas_instance, work_init);
3910 u32 wait;
3911 unsigned long flags;
3912
3913 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3914 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3915 atomic_read(&instance->adprecovery));
3916 return ;
3917 }
3918
3919 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3920 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3921 "state, restarting it...\n");
3922
3923 instance->instancet->disable_intr(instance);
3924 atomic_set(&instance->fw_outstanding, 0);
3925
3926 atomic_set(&instance->fw_reset_no_pci_access, 1);
3927 instance->instancet->adp_reset(instance, instance->reg_set);
3928 atomic_set(&instance->fw_reset_no_pci_access, 0);
3929
3930 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3931 "initiating next stage...\n");
3932
3933 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3934 "state 2 starting...\n");
3935
3936 /* waiting for about 20 second before start the second init */
3937 for (wait = 0; wait < 30; wait++) {
3938 msleep(1000);
3939 }
3940
3941 if (megasas_transition_to_ready(instance, 1)) {
3942 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3943
3944 atomic_set(&instance->fw_reset_no_pci_access, 1);
3945 megaraid_sas_kill_hba(instance);
3946 return ;
3947 }
3948
3949 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3950 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3951 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3952 ) {
3953 *instance->consumer = *instance->producer;
3954 } else {
3955 *instance->consumer = 0;
3956 *instance->producer = 0;
3957 }
3958
3959 megasas_issue_init_mfi(instance);
3960
3961 spin_lock_irqsave(&instance->hba_lock, flags);
3962 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3963 spin_unlock_irqrestore(&instance->hba_lock, flags);
3964 instance->instancet->enable_intr(instance);
3965
3966 megasas_issue_pending_cmds_again(instance);
3967 instance->issuepend_done = 1;
3968 }
3969 }
3970
3971 /**
3972 * megasas_deplete_reply_queue - Processes all completed commands
3973 * @instance: Adapter soft state
3974 * @alt_status: Alternate status to be returned to
3975 * SCSI mid-layer instead of the status
3976 * returned by the FW
3977 * Note: this must be called with hba lock held
3978 */
3979 static int
megasas_deplete_reply_queue(struct megasas_instance *instance, u8 alt_status)3980 megasas_deplete_reply_queue(struct megasas_instance *instance,
3981 u8 alt_status)
3982 {
3983 u32 mfiStatus;
3984 u32 fw_state;
3985
3986 if ((mfiStatus = instance->instancet->check_reset(instance,
3987 instance->reg_set)) == 1) {
3988 return IRQ_HANDLED;
3989 }
3990
3991 mfiStatus = instance->instancet->clear_intr(instance);
3992 if (mfiStatus == 0) {
3993 /* Hardware may not set outbound_intr_status in MSI-X mode */
3994 if (!instance->msix_vectors)
3995 return IRQ_NONE;
3996 }
3997
3998 instance->mfiStatus = mfiStatus;
3999
4000 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
4001 fw_state = instance->instancet->read_fw_status_reg(
4002 instance) & MFI_STATE_MASK;
4003
4004 if (fw_state != MFI_STATE_FAULT) {
4005 dev_notice(&instance->pdev->dev, "fw state:%x\n",
4006 fw_state);
4007 }
4008
4009 if ((fw_state == MFI_STATE_FAULT) &&
4010 (instance->disableOnlineCtrlReset == 0)) {
4011 dev_notice(&instance->pdev->dev, "wait adp restart\n");
4012
4013 if ((instance->pdev->device ==
4014 PCI_DEVICE_ID_LSI_SAS1064R) ||
4015 (instance->pdev->device ==
4016 PCI_DEVICE_ID_DELL_PERC5) ||
4017 (instance->pdev->device ==
4018 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
4019
4020 *instance->consumer =
4021 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
4022 }
4023
4024
4025 instance->instancet->disable_intr(instance);
4026 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4027 instance->issuepend_done = 0;
4028
4029 atomic_set(&instance->fw_outstanding, 0);
4030 megasas_internal_reset_defer_cmds(instance);
4031
4032 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
4033 fw_state, atomic_read(&instance->adprecovery));
4034
4035 schedule_work(&instance->work_init);
4036 return IRQ_HANDLED;
4037
4038 } else {
4039 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
4040 fw_state, instance->disableOnlineCtrlReset);
4041 }
4042 }
4043
4044 tasklet_schedule(&instance->isr_tasklet);
4045 return IRQ_HANDLED;
4046 }
4047
4048 /**
4049 * megasas_isr - isr entry point
4050 * @irq: IRQ number
4051 * @devp: IRQ context address
4052 */
megasas_isr(int irq, void *devp)4053 static irqreturn_t megasas_isr(int irq, void *devp)
4054 {
4055 struct megasas_irq_context *irq_context = devp;
4056 struct megasas_instance *instance = irq_context->instance;
4057 unsigned long flags;
4058 irqreturn_t rc;
4059
4060 if (atomic_read(&instance->fw_reset_no_pci_access))
4061 return IRQ_HANDLED;
4062
4063 spin_lock_irqsave(&instance->hba_lock, flags);
4064 rc = megasas_deplete_reply_queue(instance, DID_OK);
4065 spin_unlock_irqrestore(&instance->hba_lock, flags);
4066
4067 return rc;
4068 }
4069
4070 /**
4071 * megasas_transition_to_ready - Move the FW to READY state
4072 * @instance: Adapter soft state
4073 * @ocr: Adapter reset state
4074 *
4075 * During the initialization, FW passes can potentially be in any one of
4076 * several possible states. If the FW in operational, waiting-for-handshake
4077 * states, driver must take steps to bring it to ready state. Otherwise, it
4078 * has to wait for the ready state.
4079 */
4080 int
megasas_transition_to_ready(struct megasas_instance *instance, int ocr)4081 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
4082 {
4083 int i;
4084 u8 max_wait;
4085 u32 fw_state;
4086 u32 abs_state, curr_abs_state;
4087
4088 abs_state = instance->instancet->read_fw_status_reg(instance);
4089 fw_state = abs_state & MFI_STATE_MASK;
4090
4091 if (fw_state != MFI_STATE_READY)
4092 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4093 " state\n");
4094
4095 while (fw_state != MFI_STATE_READY) {
4096
4097 switch (fw_state) {
4098
4099 case MFI_STATE_FAULT:
4100 dev_printk(KERN_ERR, &instance->pdev->dev,
4101 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4102 abs_state & MFI_STATE_FAULT_CODE,
4103 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4104 if (ocr) {
4105 max_wait = MEGASAS_RESET_WAIT_TIME;
4106 break;
4107 } else {
4108 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4109 megasas_dump_reg_set(instance->reg_set);
4110 return -ENODEV;
4111 }
4112
4113 case MFI_STATE_WAIT_HANDSHAKE:
4114 /*
4115 * Set the CLR bit in inbound doorbell
4116 */
4117 if ((instance->pdev->device ==
4118 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4119 (instance->pdev->device ==
4120 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4121 (instance->adapter_type != MFI_SERIES))
4122 writel(
4123 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4124 &instance->reg_set->doorbell);
4125 else
4126 writel(
4127 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4128 &instance->reg_set->inbound_doorbell);
4129
4130 max_wait = MEGASAS_RESET_WAIT_TIME;
4131 break;
4132
4133 case MFI_STATE_BOOT_MESSAGE_PENDING:
4134 if ((instance->pdev->device ==
4135 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4136 (instance->pdev->device ==
4137 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4138 (instance->adapter_type != MFI_SERIES))
4139 writel(MFI_INIT_HOTPLUG,
4140 &instance->reg_set->doorbell);
4141 else
4142 writel(MFI_INIT_HOTPLUG,
4143 &instance->reg_set->inbound_doorbell);
4144
4145 max_wait = MEGASAS_RESET_WAIT_TIME;
4146 break;
4147
4148 case MFI_STATE_OPERATIONAL:
4149 /*
4150 * Bring it to READY state; assuming max wait 10 secs
4151 */
4152 instance->instancet->disable_intr(instance);
4153 if ((instance->pdev->device ==
4154 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4155 (instance->pdev->device ==
4156 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4157 (instance->adapter_type != MFI_SERIES)) {
4158 writel(MFI_RESET_FLAGS,
4159 &instance->reg_set->doorbell);
4160
4161 if (instance->adapter_type != MFI_SERIES) {
4162 for (i = 0; i < (10 * 1000); i += 20) {
4163 if (megasas_readl(
4164 instance,
4165 &instance->
4166 reg_set->
4167 doorbell) & 1)
4168 msleep(20);
4169 else
4170 break;
4171 }
4172 }
4173 } else
4174 writel(MFI_RESET_FLAGS,
4175 &instance->reg_set->inbound_doorbell);
4176
4177 max_wait = MEGASAS_RESET_WAIT_TIME;
4178 break;
4179
4180 case MFI_STATE_UNDEFINED:
4181 /*
4182 * This state should not last for more than 2 seconds
4183 */
4184 max_wait = MEGASAS_RESET_WAIT_TIME;
4185 break;
4186
4187 case MFI_STATE_BB_INIT:
4188 max_wait = MEGASAS_RESET_WAIT_TIME;
4189 break;
4190
4191 case MFI_STATE_FW_INIT:
4192 max_wait = MEGASAS_RESET_WAIT_TIME;
4193 break;
4194
4195 case MFI_STATE_FW_INIT_2:
4196 max_wait = MEGASAS_RESET_WAIT_TIME;
4197 break;
4198
4199 case MFI_STATE_DEVICE_SCAN:
4200 max_wait = MEGASAS_RESET_WAIT_TIME;
4201 break;
4202
4203 case MFI_STATE_FLUSH_CACHE:
4204 max_wait = MEGASAS_RESET_WAIT_TIME;
4205 break;
4206
4207 default:
4208 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4209 fw_state);
4210 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4211 megasas_dump_reg_set(instance->reg_set);
4212 return -ENODEV;
4213 }
4214
4215 /*
4216 * The cur_state should not last for more than max_wait secs
4217 */
4218 for (i = 0; i < max_wait * 50; i++) {
4219 curr_abs_state = instance->instancet->
4220 read_fw_status_reg(instance);
4221
4222 if (abs_state == curr_abs_state) {
4223 msleep(20);
4224 } else
4225 break;
4226 }
4227
4228 /*
4229 * Return error if fw_state hasn't changed after max_wait
4230 */
4231 if (curr_abs_state == abs_state) {
4232 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4233 "in %d secs\n", fw_state, max_wait);
4234 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4235 megasas_dump_reg_set(instance->reg_set);
4236 return -ENODEV;
4237 }
4238
4239 abs_state = curr_abs_state;
4240 fw_state = curr_abs_state & MFI_STATE_MASK;
4241 }
4242 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4243
4244 return 0;
4245 }
4246
4247 /**
4248 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
4249 * @instance: Adapter soft state
4250 */
megasas_teardown_frame_pool(struct megasas_instance *instance)4251 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4252 {
4253 int i;
4254 u16 max_cmd = instance->max_mfi_cmds;
4255 struct megasas_cmd *cmd;
4256
4257 if (!instance->frame_dma_pool)
4258 return;
4259
4260 /*
4261 * Return all frames to pool
4262 */
4263 for (i = 0; i < max_cmd; i++) {
4264
4265 cmd = instance->cmd_list[i];
4266
4267 if (cmd->frame)
4268 dma_pool_free(instance->frame_dma_pool, cmd->frame,
4269 cmd->frame_phys_addr);
4270
4271 if (cmd->sense)
4272 dma_pool_free(instance->sense_dma_pool, cmd->sense,
4273 cmd->sense_phys_addr);
4274 }
4275
4276 /*
4277 * Now destroy the pool itself
4278 */
4279 dma_pool_destroy(instance->frame_dma_pool);
4280 dma_pool_destroy(instance->sense_dma_pool);
4281
4282 instance->frame_dma_pool = NULL;
4283 instance->sense_dma_pool = NULL;
4284 }
4285
4286 /**
4287 * megasas_create_frame_pool - Creates DMA pool for cmd frames
4288 * @instance: Adapter soft state
4289 *
4290 * Each command packet has an embedded DMA memory buffer that is used for
4291 * filling MFI frame and the SG list that immediately follows the frame. This
4292 * function creates those DMA memory buffers for each command packet by using
4293 * PCI pool facility.
4294 */
megasas_create_frame_pool(struct megasas_instance *instance)4295 static int megasas_create_frame_pool(struct megasas_instance *instance)
4296 {
4297 int i;
4298 u16 max_cmd;
4299 u32 frame_count;
4300 struct megasas_cmd *cmd;
4301
4302 max_cmd = instance->max_mfi_cmds;
4303
4304 /*
4305 * For MFI controllers.
4306 * max_num_sge = 60
4307 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
4308 * Total 960 byte (15 MFI frame of 64 byte)
4309 *
4310 * Fusion adapter require only 3 extra frame.
4311 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4312 * max_sge_sz = 12 byte (sizeof megasas_sge64)
4313 * Total 192 byte (3 MFI frame of 64 byte)
4314 */
4315 frame_count = (instance->adapter_type == MFI_SERIES) ?
4316 (15 + 1) : (3 + 1);
4317 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4318 /*
4319 * Use DMA pool facility provided by PCI layer
4320 */
4321 instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4322 &instance->pdev->dev,
4323 instance->mfi_frame_size, 256, 0);
4324
4325 if (!instance->frame_dma_pool) {
4326 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4327 return -ENOMEM;
4328 }
4329
4330 instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4331 &instance->pdev->dev, 128,
4332 4, 0);
4333
4334 if (!instance->sense_dma_pool) {
4335 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4336
4337 dma_pool_destroy(instance->frame_dma_pool);
4338 instance->frame_dma_pool = NULL;
4339
4340 return -ENOMEM;
4341 }
4342
4343 /*
4344 * Allocate and attach a frame to each of the commands in cmd_list.
4345 * By making cmd->index as the context instead of the &cmd, we can
4346 * always use 32bit context regardless of the architecture
4347 */
4348 for (i = 0; i < max_cmd; i++) {
4349
4350 cmd = instance->cmd_list[i];
4351
4352 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4353 GFP_KERNEL, &cmd->frame_phys_addr);
4354
4355 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4356 GFP_KERNEL, &cmd->sense_phys_addr);
4357
4358 /*
4359 * megasas_teardown_frame_pool() takes care of freeing
4360 * whatever has been allocated
4361 */
4362 if (!cmd->frame || !cmd->sense) {
4363 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4364 megasas_teardown_frame_pool(instance);
4365 return -ENOMEM;
4366 }
4367
4368 cmd->frame->io.context = cpu_to_le32(cmd->index);
4369 cmd->frame->io.pad_0 = 0;
4370 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4371 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4372 }
4373
4374 return 0;
4375 }
4376
4377 /**
4378 * megasas_free_cmds - Free all the cmds in the free cmd pool
4379 * @instance: Adapter soft state
4380 */
megasas_free_cmds(struct megasas_instance *instance)4381 void megasas_free_cmds(struct megasas_instance *instance)
4382 {
4383 int i;
4384
4385 /* First free the MFI frame pool */
4386 megasas_teardown_frame_pool(instance);
4387
4388 /* Free all the commands in the cmd_list */
4389 for (i = 0; i < instance->max_mfi_cmds; i++)
4390
4391 kfree(instance->cmd_list[i]);
4392
4393 /* Free the cmd_list buffer itself */
4394 kfree(instance->cmd_list);
4395 instance->cmd_list = NULL;
4396
4397 INIT_LIST_HEAD(&instance->cmd_pool);
4398 }
4399
4400 /**
4401 * megasas_alloc_cmds - Allocates the command packets
4402 * @instance: Adapter soft state
4403 *
4404 * Each command that is issued to the FW, whether IO commands from the OS or
4405 * internal commands like IOCTLs, are wrapped in local data structure called
4406 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4407 * the FW.
4408 *
4409 * Each frame has a 32-bit field called context (tag). This context is used
4410 * to get back the megasas_cmd from the frame when a frame gets completed in
4411 * the ISR. Typically the address of the megasas_cmd itself would be used as
4412 * the context. But we wanted to keep the differences between 32 and 64 bit
4413 * systems to the mininum. We always use 32 bit integers for the context. In
4414 * this driver, the 32 bit values are the indices into an array cmd_list.
4415 * This array is used only to look up the megasas_cmd given the context. The
4416 * free commands themselves are maintained in a linked list called cmd_pool.
4417 */
megasas_alloc_cmds(struct megasas_instance *instance)4418 int megasas_alloc_cmds(struct megasas_instance *instance)
4419 {
4420 int i;
4421 int j;
4422 u16 max_cmd;
4423 struct megasas_cmd *cmd;
4424
4425 max_cmd = instance->max_mfi_cmds;
4426
4427 /*
4428 * instance->cmd_list is an array of struct megasas_cmd pointers.
4429 * Allocate the dynamic array first and then allocate individual
4430 * commands.
4431 */
4432 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4433
4434 if (!instance->cmd_list) {
4435 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4436 return -ENOMEM;
4437 }
4438
4439 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
4440
4441 for (i = 0; i < max_cmd; i++) {
4442 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4443 GFP_KERNEL);
4444
4445 if (!instance->cmd_list[i]) {
4446
4447 for (j = 0; j < i; j++)
4448 kfree(instance->cmd_list[j]);
4449
4450 kfree(instance->cmd_list);
4451 instance->cmd_list = NULL;
4452
4453 return -ENOMEM;
4454 }
4455 }
4456
4457 for (i = 0; i < max_cmd; i++) {
4458 cmd = instance->cmd_list[i];
4459 memset(cmd, 0, sizeof(struct megasas_cmd));
4460 cmd->index = i;
4461 cmd->scmd = NULL;
4462 cmd->instance = instance;
4463
4464 list_add_tail(&cmd->list, &instance->cmd_pool);
4465 }
4466
4467 /*
4468 * Create a frame pool and assign one frame to each cmd
4469 */
4470 if (megasas_create_frame_pool(instance)) {
4471 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4472 megasas_free_cmds(instance);
4473 return -ENOMEM;
4474 }
4475
4476 return 0;
4477 }
4478
4479 /*
4480 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
4481 * @instance: Adapter soft state
4482 *
4483 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4484 * or FW is not under OCR.
4485 */
4486 inline int
dcmd_timeout_ocr_possible(struct megasas_instance *instance)4487 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4488
4489 if (instance->adapter_type == MFI_SERIES)
4490 return KILL_ADAPTER;
4491 else if (instance->unload ||
4492 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
4493 &instance->reset_flags))
4494 return IGNORE_TIMEOUT;
4495 else
4496 return INITIATE_OCR;
4497 }
4498
4499 static void
megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)4500 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4501 {
4502 int ret;
4503 struct megasas_cmd *cmd;
4504 struct megasas_dcmd_frame *dcmd;
4505
4506 struct MR_PRIV_DEVICE *mr_device_priv_data;
4507 u16 device_id = 0;
4508
4509 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4510 cmd = megasas_get_cmd(instance);
4511
4512 if (!cmd) {
4513 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4514 return;
4515 }
4516
4517 dcmd = &cmd->frame->dcmd;
4518
4519 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4520 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4521
4522 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4523 dcmd->cmd = MFI_CMD_DCMD;
4524 dcmd->cmd_status = 0xFF;
4525 dcmd->sge_count = 1;
4526 dcmd->flags = MFI_FRAME_DIR_READ;
4527 dcmd->timeout = 0;
4528 dcmd->pad_0 = 0;
4529 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4530 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4531
4532 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4533 sizeof(struct MR_PD_INFO));
4534
4535 if ((instance->adapter_type != MFI_SERIES) &&
4536 !instance->mask_interrupts)
4537 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4538 else
4539 ret = megasas_issue_polled(instance, cmd);
4540
4541 switch (ret) {
4542 case DCMD_SUCCESS:
4543 mr_device_priv_data = sdev->hostdata;
4544 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4545 mr_device_priv_data->interface_type =
4546 instance->pd_info->state.ddf.pdType.intf;
4547 break;
4548
4549 case DCMD_TIMEOUT:
4550
4551 switch (dcmd_timeout_ocr_possible(instance)) {
4552 case INITIATE_OCR:
4553 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4554 mutex_unlock(&instance->reset_mutex);
4555 megasas_reset_fusion(instance->host,
4556 MFI_IO_TIMEOUT_OCR);
4557 mutex_lock(&instance->reset_mutex);
4558 break;
4559 case KILL_ADAPTER:
4560 megaraid_sas_kill_hba(instance);
4561 break;
4562 case IGNORE_TIMEOUT:
4563 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4564 __func__, __LINE__);
4565 break;
4566 }
4567
4568 break;
4569 }
4570
4571 if (ret != DCMD_TIMEOUT)
4572 megasas_return_cmd(instance, cmd);
4573
4574 return;
4575 }
4576 /*
4577 * megasas_get_pd_list_info - Returns FW's pd_list structure
4578 * @instance: Adapter soft state
4579 * @pd_list: pd_list structure
4580 *
4581 * Issues an internal command (DCMD) to get the FW's controller PD
4582 * list structure. This information is mainly used to find out SYSTEM
4583 * supported by the FW.
4584 */
4585 static int
megasas_get_pd_list(struct megasas_instance *instance)4586 megasas_get_pd_list(struct megasas_instance *instance)
4587 {
4588 int ret = 0, pd_index = 0;
4589 struct megasas_cmd *cmd;
4590 struct megasas_dcmd_frame *dcmd;
4591 struct MR_PD_LIST *ci;
4592 struct MR_PD_ADDRESS *pd_addr;
4593
4594 if (instance->pd_list_not_supported) {
4595 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4596 "not supported by firmware\n");
4597 return ret;
4598 }
4599
4600 ci = instance->pd_list_buf;
4601
4602 cmd = megasas_get_cmd(instance);
4603
4604 if (!cmd) {
4605 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4606 return -ENOMEM;
4607 }
4608
4609 dcmd = &cmd->frame->dcmd;
4610
4611 memset(ci, 0, sizeof(*ci));
4612 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4613
4614 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4615 dcmd->mbox.b[1] = 0;
4616 dcmd->cmd = MFI_CMD_DCMD;
4617 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4618 dcmd->sge_count = 1;
4619 dcmd->flags = MFI_FRAME_DIR_READ;
4620 dcmd->timeout = 0;
4621 dcmd->pad_0 = 0;
4622 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4623 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4624
4625 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4626 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4627
4628 if ((instance->adapter_type != MFI_SERIES) &&
4629 !instance->mask_interrupts)
4630 ret = megasas_issue_blocked_cmd(instance, cmd,
4631 MFI_IO_TIMEOUT_SECS);
4632 else
4633 ret = megasas_issue_polled(instance, cmd);
4634
4635 switch (ret) {
4636 case DCMD_FAILED:
4637 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4638 "failed/not supported by firmware\n");
4639
4640 if (instance->adapter_type != MFI_SERIES)
4641 megaraid_sas_kill_hba(instance);
4642 else
4643 instance->pd_list_not_supported = 1;
4644 break;
4645 case DCMD_TIMEOUT:
4646
4647 switch (dcmd_timeout_ocr_possible(instance)) {
4648 case INITIATE_OCR:
4649 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4650 /*
4651 * DCMD failed from AEN path.
4652 * AEN path already hold reset_mutex to avoid PCI access
4653 * while OCR is in progress.
4654 */
4655 mutex_unlock(&instance->reset_mutex);
4656 megasas_reset_fusion(instance->host,
4657 MFI_IO_TIMEOUT_OCR);
4658 mutex_lock(&instance->reset_mutex);
4659 break;
4660 case KILL_ADAPTER:
4661 megaraid_sas_kill_hba(instance);
4662 break;
4663 case IGNORE_TIMEOUT:
4664 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4665 __func__, __LINE__);
4666 break;
4667 }
4668
4669 break;
4670
4671 case DCMD_SUCCESS:
4672 pd_addr = ci->addr;
4673 if (megasas_dbg_lvl & LD_PD_DEBUG)
4674 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4675 __func__, le32_to_cpu(ci->count));
4676
4677 if ((le32_to_cpu(ci->count) >
4678 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4679 break;
4680
4681 memset(instance->local_pd_list, 0,
4682 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4683
4684 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4685 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4686 le16_to_cpu(pd_addr->deviceId);
4687 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4688 pd_addr->scsiDevType;
4689 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4690 MR_PD_STATE_SYSTEM;
4691 if (megasas_dbg_lvl & LD_PD_DEBUG)
4692 dev_info(&instance->pdev->dev,
4693 "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4694 pd_index, le16_to_cpu(pd_addr->deviceId),
4695 pd_addr->scsiDevType);
4696 pd_addr++;
4697 }
4698
4699 memcpy(instance->pd_list, instance->local_pd_list,
4700 sizeof(instance->pd_list));
4701 break;
4702
4703 }
4704
4705 if (ret != DCMD_TIMEOUT)
4706 megasas_return_cmd(instance, cmd);
4707
4708 return ret;
4709 }
4710
4711 /*
4712 * megasas_get_ld_list_info - Returns FW's ld_list structure
4713 * @instance: Adapter soft state
4714 * @ld_list: ld_list structure
4715 *
4716 * Issues an internal command (DCMD) to get the FW's controller PD
4717 * list structure. This information is mainly used to find out SYSTEM
4718 * supported by the FW.
4719 */
4720 static int
megasas_get_ld_list(struct megasas_instance *instance)4721 megasas_get_ld_list(struct megasas_instance *instance)
4722 {
4723 int ret = 0, ld_index = 0, ids = 0;
4724 struct megasas_cmd *cmd;
4725 struct megasas_dcmd_frame *dcmd;
4726 struct MR_LD_LIST *ci;
4727 dma_addr_t ci_h = 0;
4728 u32 ld_count;
4729
4730 ci = instance->ld_list_buf;
4731 ci_h = instance->ld_list_buf_h;
4732
4733 cmd = megasas_get_cmd(instance);
4734
4735 if (!cmd) {
4736 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4737 return -ENOMEM;
4738 }
4739
4740 dcmd = &cmd->frame->dcmd;
4741
4742 memset(ci, 0, sizeof(*ci));
4743 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4744
4745 if (instance->supportmax256vd)
4746 dcmd->mbox.b[0] = 1;
4747 dcmd->cmd = MFI_CMD_DCMD;
4748 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4749 dcmd->sge_count = 1;
4750 dcmd->flags = MFI_FRAME_DIR_READ;
4751 dcmd->timeout = 0;
4752 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4753 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4754 dcmd->pad_0 = 0;
4755
4756 megasas_set_dma_settings(instance, dcmd, ci_h,
4757 sizeof(struct MR_LD_LIST));
4758
4759 if ((instance->adapter_type != MFI_SERIES) &&
4760 !instance->mask_interrupts)
4761 ret = megasas_issue_blocked_cmd(instance, cmd,
4762 MFI_IO_TIMEOUT_SECS);
4763 else
4764 ret = megasas_issue_polled(instance, cmd);
4765
4766 ld_count = le32_to_cpu(ci->ldCount);
4767
4768 switch (ret) {
4769 case DCMD_FAILED:
4770 megaraid_sas_kill_hba(instance);
4771 break;
4772 case DCMD_TIMEOUT:
4773
4774 switch (dcmd_timeout_ocr_possible(instance)) {
4775 case INITIATE_OCR:
4776 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4777 /*
4778 * DCMD failed from AEN path.
4779 * AEN path already hold reset_mutex to avoid PCI access
4780 * while OCR is in progress.
4781 */
4782 mutex_unlock(&instance->reset_mutex);
4783 megasas_reset_fusion(instance->host,
4784 MFI_IO_TIMEOUT_OCR);
4785 mutex_lock(&instance->reset_mutex);
4786 break;
4787 case KILL_ADAPTER:
4788 megaraid_sas_kill_hba(instance);
4789 break;
4790 case IGNORE_TIMEOUT:
4791 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4792 __func__, __LINE__);
4793 break;
4794 }
4795
4796 break;
4797
4798 case DCMD_SUCCESS:
4799 if (megasas_dbg_lvl & LD_PD_DEBUG)
4800 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4801 __func__, ld_count);
4802
4803 if (ld_count > instance->fw_supported_vd_count)
4804 break;
4805
4806 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4807
4808 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4809 if (ci->ldList[ld_index].state != 0) {
4810 ids = ci->ldList[ld_index].ref.targetId;
4811 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4812 if (megasas_dbg_lvl & LD_PD_DEBUG)
4813 dev_info(&instance->pdev->dev,
4814 "LD%d: targetID: 0x%03x\n",
4815 ld_index, ids);
4816 }
4817 }
4818
4819 break;
4820 }
4821
4822 if (ret != DCMD_TIMEOUT)
4823 megasas_return_cmd(instance, cmd);
4824
4825 return ret;
4826 }
4827
4828 /**
4829 * megasas_ld_list_query - Returns FW's ld_list structure
4830 * @instance: Adapter soft state
4831 * @query_type: ld_list structure type
4832 *
4833 * Issues an internal command (DCMD) to get the FW's controller PD
4834 * list structure. This information is mainly used to find out SYSTEM
4835 * supported by the FW.
4836 */
4837 static int
megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)4838 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4839 {
4840 int ret = 0, ld_index = 0, ids = 0;
4841 struct megasas_cmd *cmd;
4842 struct megasas_dcmd_frame *dcmd;
4843 struct MR_LD_TARGETID_LIST *ci;
4844 dma_addr_t ci_h = 0;
4845 u32 tgtid_count;
4846
4847 ci = instance->ld_targetid_list_buf;
4848 ci_h = instance->ld_targetid_list_buf_h;
4849
4850 cmd = megasas_get_cmd(instance);
4851
4852 if (!cmd) {
4853 dev_warn(&instance->pdev->dev,
4854 "megasas_ld_list_query: Failed to get cmd\n");
4855 return -ENOMEM;
4856 }
4857
4858 dcmd = &cmd->frame->dcmd;
4859
4860 memset(ci, 0, sizeof(*ci));
4861 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4862
4863 dcmd->mbox.b[0] = query_type;
4864 if (instance->supportmax256vd)
4865 dcmd->mbox.b[2] = 1;
4866
4867 dcmd->cmd = MFI_CMD_DCMD;
4868 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4869 dcmd->sge_count = 1;
4870 dcmd->flags = MFI_FRAME_DIR_READ;
4871 dcmd->timeout = 0;
4872 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4873 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4874 dcmd->pad_0 = 0;
4875
4876 megasas_set_dma_settings(instance, dcmd, ci_h,
4877 sizeof(struct MR_LD_TARGETID_LIST));
4878
4879 if ((instance->adapter_type != MFI_SERIES) &&
4880 !instance->mask_interrupts)
4881 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4882 else
4883 ret = megasas_issue_polled(instance, cmd);
4884
4885 switch (ret) {
4886 case DCMD_FAILED:
4887 dev_info(&instance->pdev->dev,
4888 "DCMD not supported by firmware - %s %d\n",
4889 __func__, __LINE__);
4890 ret = megasas_get_ld_list(instance);
4891 break;
4892 case DCMD_TIMEOUT:
4893 switch (dcmd_timeout_ocr_possible(instance)) {
4894 case INITIATE_OCR:
4895 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4896 /*
4897 * DCMD failed from AEN path.
4898 * AEN path already hold reset_mutex to avoid PCI access
4899 * while OCR is in progress.
4900 */
4901 mutex_unlock(&instance->reset_mutex);
4902 megasas_reset_fusion(instance->host,
4903 MFI_IO_TIMEOUT_OCR);
4904 mutex_lock(&instance->reset_mutex);
4905 break;
4906 case KILL_ADAPTER:
4907 megaraid_sas_kill_hba(instance);
4908 break;
4909 case IGNORE_TIMEOUT:
4910 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4911 __func__, __LINE__);
4912 break;
4913 }
4914
4915 break;
4916 case DCMD_SUCCESS:
4917 tgtid_count = le32_to_cpu(ci->count);
4918
4919 if (megasas_dbg_lvl & LD_PD_DEBUG)
4920 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4921 __func__, tgtid_count);
4922
4923 if ((tgtid_count > (instance->fw_supported_vd_count)))
4924 break;
4925
4926 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4927 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4928 ids = ci->targetId[ld_index];
4929 instance->ld_ids[ids] = ci->targetId[ld_index];
4930 if (megasas_dbg_lvl & LD_PD_DEBUG)
4931 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4932 ld_index, ci->targetId[ld_index]);
4933 }
4934
4935 break;
4936 }
4937
4938 if (ret != DCMD_TIMEOUT)
4939 megasas_return_cmd(instance, cmd);
4940
4941 return ret;
4942 }
4943
4944 /**
4945 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET
4946 * dcmd.mbox - reserved
4947 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure
4948 * Desc: This DCMD will return the combined device list
4949 * Status: MFI_STAT_OK - List returned successfully
4950 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4951 * disabled
4952 * @instance: Adapter soft state
4953 * @is_probe: Driver probe check
4954 * Return: 0 if DCMD succeeded
4955 * non-zero if failed
4956 */
4957 static int
megasas_host_device_list_query(struct megasas_instance *instance, bool is_probe)4958 megasas_host_device_list_query(struct megasas_instance *instance,
4959 bool is_probe)
4960 {
4961 int ret, i, target_id;
4962 struct megasas_cmd *cmd;
4963 struct megasas_dcmd_frame *dcmd;
4964 struct MR_HOST_DEVICE_LIST *ci;
4965 u32 count;
4966 dma_addr_t ci_h;
4967
4968 ci = instance->host_device_list_buf;
4969 ci_h = instance->host_device_list_buf_h;
4970
4971 cmd = megasas_get_cmd(instance);
4972
4973 if (!cmd) {
4974 dev_warn(&instance->pdev->dev,
4975 "%s: failed to get cmd\n",
4976 __func__);
4977 return -ENOMEM;
4978 }
4979
4980 dcmd = &cmd->frame->dcmd;
4981
4982 memset(ci, 0, sizeof(*ci));
4983 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4984
4985 dcmd->mbox.b[0] = is_probe ? 0 : 1;
4986 dcmd->cmd = MFI_CMD_DCMD;
4987 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4988 dcmd->sge_count = 1;
4989 dcmd->flags = MFI_FRAME_DIR_READ;
4990 dcmd->timeout = 0;
4991 dcmd->pad_0 = 0;
4992 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
4993 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
4994
4995 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
4996
4997 if (!instance->mask_interrupts) {
4998 ret = megasas_issue_blocked_cmd(instance, cmd,
4999 MFI_IO_TIMEOUT_SECS);
5000 } else {
5001 ret = megasas_issue_polled(instance, cmd);
5002 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5003 }
5004
5005 switch (ret) {
5006 case DCMD_SUCCESS:
5007 /* Fill the internal pd_list and ld_ids array based on
5008 * targetIds returned by FW
5009 */
5010 count = le32_to_cpu(ci->count);
5011
5012 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
5013 break;
5014
5015 if (megasas_dbg_lvl & LD_PD_DEBUG)
5016 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
5017 __func__, count);
5018
5019 memset(instance->local_pd_list, 0,
5020 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
5021 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
5022 for (i = 0; i < count; i++) {
5023 target_id = le16_to_cpu(ci->host_device_list[i].target_id);
5024 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
5025 instance->local_pd_list[target_id].tid = target_id;
5026 instance->local_pd_list[target_id].driveType =
5027 ci->host_device_list[i].scsi_type;
5028 instance->local_pd_list[target_id].driveState =
5029 MR_PD_STATE_SYSTEM;
5030 if (megasas_dbg_lvl & LD_PD_DEBUG)
5031 dev_info(&instance->pdev->dev,
5032 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
5033 i, target_id, ci->host_device_list[i].scsi_type);
5034 } else {
5035 instance->ld_ids[target_id] = target_id;
5036 if (megasas_dbg_lvl & LD_PD_DEBUG)
5037 dev_info(&instance->pdev->dev,
5038 "Device %d: LD targetID: 0x%03x\n",
5039 i, target_id);
5040 }
5041 }
5042
5043 memcpy(instance->pd_list, instance->local_pd_list,
5044 sizeof(instance->pd_list));
5045 break;
5046
5047 case DCMD_TIMEOUT:
5048 switch (dcmd_timeout_ocr_possible(instance)) {
5049 case INITIATE_OCR:
5050 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5051 mutex_unlock(&instance->reset_mutex);
5052 megasas_reset_fusion(instance->host,
5053 MFI_IO_TIMEOUT_OCR);
5054 mutex_lock(&instance->reset_mutex);
5055 break;
5056 case KILL_ADAPTER:
5057 megaraid_sas_kill_hba(instance);
5058 break;
5059 case IGNORE_TIMEOUT:
5060 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5061 __func__, __LINE__);
5062 break;
5063 }
5064 break;
5065 case DCMD_FAILED:
5066 dev_err(&instance->pdev->dev,
5067 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
5068 __func__);
5069 break;
5070 }
5071
5072 if (ret != DCMD_TIMEOUT)
5073 megasas_return_cmd(instance, cmd);
5074
5075 return ret;
5076 }
5077
5078 /*
5079 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
5080 * instance : Controller's instance
5081 */
megasas_update_ext_vd_details(struct megasas_instance *instance)5082 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
5083 {
5084 struct fusion_context *fusion;
5085 u32 ventura_map_sz = 0;
5086
5087 fusion = instance->ctrl_context;
5088 /* For MFI based controllers return dummy success */
5089 if (!fusion)
5090 return;
5091
5092 instance->supportmax256vd =
5093 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
5094 /* Below is additional check to address future FW enhancement */
5095 if (instance->ctrl_info_buf->max_lds > 64)
5096 instance->supportmax256vd = 1;
5097
5098 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5099 * MEGASAS_MAX_DEV_PER_CHANNEL;
5100 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5101 * MEGASAS_MAX_DEV_PER_CHANNEL;
5102 if (instance->supportmax256vd) {
5103 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5104 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5105 } else {
5106 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5107 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5108 }
5109
5110 dev_info(&instance->pdev->dev,
5111 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5112 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5113 instance->ctrl_info_buf->max_lds);
5114
5115 if (instance->max_raid_mapsize) {
5116 ventura_map_sz = instance->max_raid_mapsize *
5117 MR_MIN_MAP_SIZE; /* 64k */
5118 fusion->current_map_sz = ventura_map_sz;
5119 fusion->max_map_sz = ventura_map_sz;
5120 } else {
5121 fusion->old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
5122 (sizeof(struct MR_LD_SPAN_MAP) *
5123 (instance->fw_supported_vd_count - 1));
5124 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
5125
5126 fusion->max_map_sz =
5127 max(fusion->old_map_sz, fusion->new_map_sz);
5128
5129 if (instance->supportmax256vd)
5130 fusion->current_map_sz = fusion->new_map_sz;
5131 else
5132 fusion->current_map_sz = fusion->old_map_sz;
5133 }
5134 /* irrespective of FW raid maps, driver raid map is constant */
5135 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5136 }
5137
5138 /*
5139 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5140 * dcmd.hdr.length - number of bytes to read
5141 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES
5142 * Desc: Fill in snapdump properties
5143 * Status: MFI_STAT_OK- Command successful
5144 */
megasas_get_snapdump_properties(struct megasas_instance *instance)5145 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5146 {
5147 int ret = 0;
5148 struct megasas_cmd *cmd;
5149 struct megasas_dcmd_frame *dcmd;
5150 struct MR_SNAPDUMP_PROPERTIES *ci;
5151 dma_addr_t ci_h = 0;
5152
5153 ci = instance->snapdump_prop;
5154 ci_h = instance->snapdump_prop_h;
5155
5156 if (!ci)
5157 return;
5158
5159 cmd = megasas_get_cmd(instance);
5160
5161 if (!cmd) {
5162 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5163 return;
5164 }
5165
5166 dcmd = &cmd->frame->dcmd;
5167
5168 memset(ci, 0, sizeof(*ci));
5169 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5170
5171 dcmd->cmd = MFI_CMD_DCMD;
5172 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5173 dcmd->sge_count = 1;
5174 dcmd->flags = MFI_FRAME_DIR_READ;
5175 dcmd->timeout = 0;
5176 dcmd->pad_0 = 0;
5177 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5178 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5179
5180 megasas_set_dma_settings(instance, dcmd, ci_h,
5181 sizeof(struct MR_SNAPDUMP_PROPERTIES));
5182
5183 if (!instance->mask_interrupts) {
5184 ret = megasas_issue_blocked_cmd(instance, cmd,
5185 MFI_IO_TIMEOUT_SECS);
5186 } else {
5187 ret = megasas_issue_polled(instance, cmd);
5188 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5189 }
5190
5191 switch (ret) {
5192 case DCMD_SUCCESS:
5193 instance->snapdump_wait_time =
5194 min_t(u8, ci->trigger_min_num_sec_before_ocr,
5195 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5196 break;
5197
5198 case DCMD_TIMEOUT:
5199 switch (dcmd_timeout_ocr_possible(instance)) {
5200 case INITIATE_OCR:
5201 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5202 mutex_unlock(&instance->reset_mutex);
5203 megasas_reset_fusion(instance->host,
5204 MFI_IO_TIMEOUT_OCR);
5205 mutex_lock(&instance->reset_mutex);
5206 break;
5207 case KILL_ADAPTER:
5208 megaraid_sas_kill_hba(instance);
5209 break;
5210 case IGNORE_TIMEOUT:
5211 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5212 __func__, __LINE__);
5213 break;
5214 }
5215 }
5216
5217 if (ret != DCMD_TIMEOUT)
5218 megasas_return_cmd(instance, cmd);
5219 }
5220
5221 /**
5222 * megasas_get_controller_info - Returns FW's controller structure
5223 * @instance: Adapter soft state
5224 *
5225 * Issues an internal command (DCMD) to get the FW's controller structure.
5226 * This information is mainly used to find out the maximum IO transfer per
5227 * command supported by the FW.
5228 */
5229 int
megasas_get_ctrl_info(struct megasas_instance *instance)5230 megasas_get_ctrl_info(struct megasas_instance *instance)
5231 {
5232 int ret = 0;
5233 struct megasas_cmd *cmd;
5234 struct megasas_dcmd_frame *dcmd;
5235 struct megasas_ctrl_info *ci;
5236 dma_addr_t ci_h = 0;
5237
5238 ci = instance->ctrl_info_buf;
5239 ci_h = instance->ctrl_info_buf_h;
5240
5241 cmd = megasas_get_cmd(instance);
5242
5243 if (!cmd) {
5244 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5245 return -ENOMEM;
5246 }
5247
5248 dcmd = &cmd->frame->dcmd;
5249
5250 memset(ci, 0, sizeof(*ci));
5251 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5252
5253 dcmd->cmd = MFI_CMD_DCMD;
5254 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5255 dcmd->sge_count = 1;
5256 dcmd->flags = MFI_FRAME_DIR_READ;
5257 dcmd->timeout = 0;
5258 dcmd->pad_0 = 0;
5259 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5260 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5261 dcmd->mbox.b[0] = 1;
5262
5263 megasas_set_dma_settings(instance, dcmd, ci_h,
5264 sizeof(struct megasas_ctrl_info));
5265
5266 if ((instance->adapter_type != MFI_SERIES) &&
5267 !instance->mask_interrupts) {
5268 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5269 } else {
5270 ret = megasas_issue_polled(instance, cmd);
5271 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5272 }
5273
5274 switch (ret) {
5275 case DCMD_SUCCESS:
5276 /* Save required controller information in
5277 * CPU endianness format.
5278 */
5279 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5280 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5281 le32_to_cpus((u32 *)&ci->adapterOperations2);
5282 le32_to_cpus((u32 *)&ci->adapterOperations3);
5283 le16_to_cpus((u16 *)&ci->adapter_operations4);
5284 le32_to_cpus((u32 *)&ci->adapter_operations5);
5285
5286 /* Update the latest Ext VD info.
5287 * From Init path, store current firmware details.
5288 * From OCR path, detect any firmware properties changes.
5289 * in case of Firmware upgrade without system reboot.
5290 */
5291 megasas_update_ext_vd_details(instance);
5292 instance->support_seqnum_jbod_fp =
5293 ci->adapterOperations3.useSeqNumJbodFP;
5294 instance->support_morethan256jbod =
5295 ci->adapter_operations4.support_pd_map_target_id;
5296 instance->support_nvme_passthru =
5297 ci->adapter_operations4.support_nvme_passthru;
5298 instance->support_pci_lane_margining =
5299 ci->adapter_operations5.support_pci_lane_margining;
5300 instance->task_abort_tmo = ci->TaskAbortTO;
5301 instance->max_reset_tmo = ci->MaxResetTO;
5302
5303 /*Check whether controller is iMR or MR */
5304 instance->is_imr = (ci->memory_size ? 0 : 1);
5305
5306 instance->snapdump_wait_time =
5307 (ci->properties.on_off_properties2.enable_snap_dump ?
5308 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5309
5310 instance->enable_fw_dev_list =
5311 ci->properties.on_off_properties2.enable_fw_dev_list;
5312
5313 dev_info(&instance->pdev->dev,
5314 "controller type\t: %s(%dMB)\n",
5315 instance->is_imr ? "iMR" : "MR",
5316 le16_to_cpu(ci->memory_size));
5317
5318 instance->disableOnlineCtrlReset =
5319 ci->properties.OnOffProperties.disableOnlineCtrlReset;
5320 instance->secure_jbod_support =
5321 ci->adapterOperations3.supportSecurityonJBOD;
5322 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5323 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5324 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5325 instance->secure_jbod_support ? "Yes" : "No");
5326 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5327 instance->support_nvme_passthru ? "Yes" : "No");
5328 dev_info(&instance->pdev->dev,
5329 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5330 instance->task_abort_tmo, instance->max_reset_tmo);
5331 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5332 instance->support_seqnum_jbod_fp ? "Yes" : "No");
5333 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5334 instance->support_pci_lane_margining ? "Yes" : "No");
5335
5336 break;
5337
5338 case DCMD_TIMEOUT:
5339 switch (dcmd_timeout_ocr_possible(instance)) {
5340 case INITIATE_OCR:
5341 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5342 mutex_unlock(&instance->reset_mutex);
5343 megasas_reset_fusion(instance->host,
5344 MFI_IO_TIMEOUT_OCR);
5345 mutex_lock(&instance->reset_mutex);
5346 break;
5347 case KILL_ADAPTER:
5348 megaraid_sas_kill_hba(instance);
5349 break;
5350 case IGNORE_TIMEOUT:
5351 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5352 __func__, __LINE__);
5353 break;
5354 }
5355 break;
5356 case DCMD_FAILED:
5357 megaraid_sas_kill_hba(instance);
5358 break;
5359
5360 }
5361
5362 if (ret != DCMD_TIMEOUT)
5363 megasas_return_cmd(instance, cmd);
5364
5365 return ret;
5366 }
5367
5368 /*
5369 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
5370 * to firmware
5371 *
5372 * @instance: Adapter soft state
5373 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
5374 MR_CRASH_BUF_TURN_OFF = 0
5375 MR_CRASH_BUF_TURN_ON = 1
5376 * @return 0 on success non-zero on failure.
5377 * Issues an internal command (DCMD) to set parameters for crash dump feature.
5378 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5379 * that driver supports crash dump feature. This DCMD will be sent only if
5380 * crash dump feature is supported by the FW.
5381 *
5382 */
megasas_set_crash_dump_params(struct megasas_instance *instance, u8 crash_buf_state)5383 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5384 u8 crash_buf_state)
5385 {
5386 int ret = 0;
5387 struct megasas_cmd *cmd;
5388 struct megasas_dcmd_frame *dcmd;
5389
5390 cmd = megasas_get_cmd(instance);
5391
5392 if (!cmd) {
5393 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5394 return -ENOMEM;
5395 }
5396
5397
5398 dcmd = &cmd->frame->dcmd;
5399
5400 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5401 dcmd->mbox.b[0] = crash_buf_state;
5402 dcmd->cmd = MFI_CMD_DCMD;
5403 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5404 dcmd->sge_count = 1;
5405 dcmd->flags = MFI_FRAME_DIR_NONE;
5406 dcmd->timeout = 0;
5407 dcmd->pad_0 = 0;
5408 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5409 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5410
5411 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5412 CRASH_DMA_BUF_SIZE);
5413
5414 if ((instance->adapter_type != MFI_SERIES) &&
5415 !instance->mask_interrupts)
5416 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5417 else
5418 ret = megasas_issue_polled(instance, cmd);
5419
5420 if (ret == DCMD_TIMEOUT) {
5421 switch (dcmd_timeout_ocr_possible(instance)) {
5422 case INITIATE_OCR:
5423 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5424 megasas_reset_fusion(instance->host,
5425 MFI_IO_TIMEOUT_OCR);
5426 break;
5427 case KILL_ADAPTER:
5428 megaraid_sas_kill_hba(instance);
5429 break;
5430 case IGNORE_TIMEOUT:
5431 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5432 __func__, __LINE__);
5433 break;
5434 }
5435 } else
5436 megasas_return_cmd(instance, cmd);
5437
5438 return ret;
5439 }
5440
5441 /**
5442 * megasas_issue_init_mfi - Initializes the FW
5443 * @instance: Adapter soft state
5444 *
5445 * Issues the INIT MFI cmd
5446 */
5447 static int
megasas_issue_init_mfi(struct megasas_instance *instance)5448 megasas_issue_init_mfi(struct megasas_instance *instance)
5449 {
5450 __le32 context;
5451 struct megasas_cmd *cmd;
5452 struct megasas_init_frame *init_frame;
5453 struct megasas_init_queue_info *initq_info;
5454 dma_addr_t init_frame_h;
5455 dma_addr_t initq_info_h;
5456
5457 /*
5458 * Prepare a init frame. Note the init frame points to queue info
5459 * structure. Each frame has SGL allocated after first 64 bytes. For
5460 * this frame - since we don't need any SGL - we use SGL's space as
5461 * queue info structure
5462 *
5463 * We will not get a NULL command below. We just created the pool.
5464 */
5465 cmd = megasas_get_cmd(instance);
5466
5467 init_frame = (struct megasas_init_frame *)cmd->frame;
5468 initq_info = (struct megasas_init_queue_info *)
5469 ((unsigned long)init_frame + 64);
5470
5471 init_frame_h = cmd->frame_phys_addr;
5472 initq_info_h = init_frame_h + 64;
5473
5474 context = init_frame->context;
5475 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5476 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5477 init_frame->context = context;
5478
5479 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5480 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5481
5482 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5483 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5484
5485 init_frame->cmd = MFI_CMD_INIT;
5486 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5487 init_frame->queue_info_new_phys_addr_lo =
5488 cpu_to_le32(lower_32_bits(initq_info_h));
5489 init_frame->queue_info_new_phys_addr_hi =
5490 cpu_to_le32(upper_32_bits(initq_info_h));
5491
5492 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5493
5494 /*
5495 * disable the intr before firing the init frame to FW
5496 */
5497 instance->instancet->disable_intr(instance);
5498
5499 /*
5500 * Issue the init frame in polled mode
5501 */
5502
5503 if (megasas_issue_polled(instance, cmd)) {
5504 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5505 megasas_return_cmd(instance, cmd);
5506 goto fail_fw_init;
5507 }
5508
5509 megasas_return_cmd(instance, cmd);
5510
5511 return 0;
5512
5513 fail_fw_init:
5514 return -EINVAL;
5515 }
5516
5517 static u32
megasas_init_adapter_mfi(struct megasas_instance *instance)5518 megasas_init_adapter_mfi(struct megasas_instance *instance)
5519 {
5520 u32 context_sz;
5521 u32 reply_q_sz;
5522
5523 /*
5524 * Get various operational parameters from status register
5525 */
5526 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5527 /*
5528 * Reduce the max supported cmds by 1. This is to ensure that the
5529 * reply_q_sz (1 more than the max cmd that driver may send)
5530 * does not exceed max cmds that the FW can support
5531 */
5532 instance->max_fw_cmds = instance->max_fw_cmds-1;
5533 instance->max_mfi_cmds = instance->max_fw_cmds;
5534 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5535 0x10;
5536 /*
5537 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5538 * are reserved for IOCTL + driver's internal DCMDs.
5539 */
5540 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5541 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5542 instance->max_scsi_cmds = (instance->max_fw_cmds -
5543 MEGASAS_SKINNY_INT_CMDS);
5544 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5545 } else {
5546 instance->max_scsi_cmds = (instance->max_fw_cmds -
5547 MEGASAS_INT_CMDS);
5548 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5549 }
5550
5551 instance->cur_can_queue = instance->max_scsi_cmds;
5552 /*
5553 * Create a pool of commands
5554 */
5555 if (megasas_alloc_cmds(instance))
5556 goto fail_alloc_cmds;
5557
5558 /*
5559 * Allocate memory for reply queue. Length of reply queue should
5560 * be _one_ more than the maximum commands handled by the firmware.
5561 *
5562 * Note: When FW completes commands, it places corresponding contex
5563 * values in this circular reply queue. This circular queue is a fairly
5564 * typical producer-consumer queue. FW is the producer (of completed
5565 * commands) and the driver is the consumer.
5566 */
5567 context_sz = sizeof(u32);
5568 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5569
5570 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5571 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5572
5573 if (!instance->reply_queue) {
5574 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5575 goto fail_reply_queue;
5576 }
5577
5578 if (megasas_issue_init_mfi(instance))
5579 goto fail_fw_init;
5580
5581 if (megasas_get_ctrl_info(instance)) {
5582 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5583 "Fail from %s %d\n", instance->unique_id,
5584 __func__, __LINE__);
5585 goto fail_fw_init;
5586 }
5587
5588 instance->fw_support_ieee = 0;
5589 instance->fw_support_ieee =
5590 (instance->instancet->read_fw_status_reg(instance) &
5591 0x04000000);
5592
5593 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5594 instance->fw_support_ieee);
5595
5596 if (instance->fw_support_ieee)
5597 instance->flag_ieee = 1;
5598
5599 return 0;
5600
5601 fail_fw_init:
5602
5603 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5604 instance->reply_queue, instance->reply_queue_h);
5605 fail_reply_queue:
5606 megasas_free_cmds(instance);
5607
5608 fail_alloc_cmds:
5609 return 1;
5610 }
5611
5612 static
megasas_setup_irq_poll(struct megasas_instance *instance)5613 void megasas_setup_irq_poll(struct megasas_instance *instance)
5614 {
5615 struct megasas_irq_context *irq_ctx;
5616 u32 count, i;
5617
5618 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5619
5620 /* Initialize IRQ poll */
5621 for (i = 0; i < count; i++) {
5622 irq_ctx = &instance->irq_context[i];
5623 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5624 irq_ctx->irq_poll_scheduled = false;
5625 irq_poll_init(&irq_ctx->irqpoll,
5626 instance->threshold_reply_count,
5627 megasas_irqpoll);
5628 }
5629 }
5630
5631 /*
5632 * megasas_setup_irqs_ioapic - register legacy interrupts.
5633 * @instance: Adapter soft state
5634 *
5635 * Do not enable interrupt, only setup ISRs.
5636 *
5637 * Return 0 on success.
5638 */
5639 static int
megasas_setup_irqs_ioapic(struct megasas_instance *instance)5640 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5641 {
5642 struct pci_dev *pdev;
5643
5644 pdev = instance->pdev;
5645 instance->irq_context[0].instance = instance;
5646 instance->irq_context[0].MSIxIndex = 0;
5647 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5648 "megasas", instance->host->host_no);
5649 if (request_irq(pci_irq_vector(pdev, 0),
5650 instance->instancet->service_isr, IRQF_SHARED,
5651 instance->irq_context->name, &instance->irq_context[0])) {
5652 dev_err(&instance->pdev->dev,
5653 "Failed to register IRQ from %s %d\n",
5654 __func__, __LINE__);
5655 return -1;
5656 }
5657 instance->perf_mode = MR_LATENCY_PERF_MODE;
5658 instance->low_latency_index_start = 0;
5659 return 0;
5660 }
5661
5662 /**
5663 * megasas_setup_irqs_msix - register MSI-x interrupts.
5664 * @instance: Adapter soft state
5665 * @is_probe: Driver probe check
5666 *
5667 * Do not enable interrupt, only setup ISRs.
5668 *
5669 * Return 0 on success.
5670 */
5671 static int
megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)5672 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5673 {
5674 int i, j;
5675 struct pci_dev *pdev;
5676
5677 pdev = instance->pdev;
5678
5679 /* Try MSI-x */
5680 for (i = 0; i < instance->msix_vectors; i++) {
5681 instance->irq_context[i].instance = instance;
5682 instance->irq_context[i].MSIxIndex = i;
5683 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5684 "megasas", instance->host->host_no, i);
5685 if (request_irq(pci_irq_vector(pdev, i),
5686 instance->instancet->service_isr, 0, instance->irq_context[i].name,
5687 &instance->irq_context[i])) {
5688 dev_err(&instance->pdev->dev,
5689 "Failed to register IRQ for vector %d.\n", i);
5690 for (j = 0; j < i; j++) {
5691 if (j < instance->low_latency_index_start)
5692 irq_set_affinity_hint(
5693 pci_irq_vector(pdev, j), NULL);
5694 free_irq(pci_irq_vector(pdev, j),
5695 &instance->irq_context[j]);
5696 }
5697 /* Retry irq register for IO_APIC*/
5698 instance->msix_vectors = 0;
5699 instance->msix_load_balance = false;
5700 if (is_probe) {
5701 pci_free_irq_vectors(instance->pdev);
5702 return megasas_setup_irqs_ioapic(instance);
5703 } else {
5704 return -1;
5705 }
5706 }
5707 }
5708
5709 return 0;
5710 }
5711
5712 /*
5713 * megasas_destroy_irqs- unregister interrupts.
5714 * @instance: Adapter soft state
5715 * return: void
5716 */
5717 static void
megasas_destroy_irqs(struct megasas_instance *instance)5718 megasas_destroy_irqs(struct megasas_instance *instance) {
5719
5720 int i;
5721 int count;
5722 struct megasas_irq_context *irq_ctx;
5723
5724 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5725 if (instance->adapter_type != MFI_SERIES) {
5726 for (i = 0; i < count; i++) {
5727 irq_ctx = &instance->irq_context[i];
5728 irq_poll_disable(&irq_ctx->irqpoll);
5729 }
5730 }
5731
5732 if (instance->msix_vectors)
5733 for (i = 0; i < instance->msix_vectors; i++) {
5734 if (i < instance->low_latency_index_start)
5735 irq_set_affinity_hint(
5736 pci_irq_vector(instance->pdev, i), NULL);
5737 free_irq(pci_irq_vector(instance->pdev, i),
5738 &instance->irq_context[i]);
5739 }
5740 else
5741 free_irq(pci_irq_vector(instance->pdev, 0),
5742 &instance->irq_context[0]);
5743 }
5744
5745 /**
5746 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
5747 * @instance: Adapter soft state
5748 *
5749 * Return 0 on success.
5750 */
5751 void
megasas_setup_jbod_map(struct megasas_instance *instance)5752 megasas_setup_jbod_map(struct megasas_instance *instance)
5753 {
5754 int i;
5755 struct fusion_context *fusion = instance->ctrl_context;
5756 u32 pd_seq_map_sz;
5757
5758 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
5759 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
5760
5761 instance->use_seqnum_jbod_fp =
5762 instance->support_seqnum_jbod_fp;
5763 if (reset_devices || !fusion ||
5764 !instance->support_seqnum_jbod_fp) {
5765 dev_info(&instance->pdev->dev,
5766 "JBOD sequence map is disabled %s %d\n",
5767 __func__, __LINE__);
5768 instance->use_seqnum_jbod_fp = false;
5769 return;
5770 }
5771
5772 if (fusion->pd_seq_sync[0])
5773 goto skip_alloc;
5774
5775 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5776 fusion->pd_seq_sync[i] = dma_alloc_coherent
5777 (&instance->pdev->dev, pd_seq_map_sz,
5778 &fusion->pd_seq_phys[i], GFP_KERNEL);
5779 if (!fusion->pd_seq_sync[i]) {
5780 dev_err(&instance->pdev->dev,
5781 "Failed to allocate memory from %s %d\n",
5782 __func__, __LINE__);
5783 if (i == 1) {
5784 dma_free_coherent(&instance->pdev->dev,
5785 pd_seq_map_sz, fusion->pd_seq_sync[0],
5786 fusion->pd_seq_phys[0]);
5787 fusion->pd_seq_sync[0] = NULL;
5788 }
5789 instance->use_seqnum_jbod_fp = false;
5790 return;
5791 }
5792 }
5793
5794 skip_alloc:
5795 if (!megasas_sync_pd_seq_num(instance, false) &&
5796 !megasas_sync_pd_seq_num(instance, true))
5797 instance->use_seqnum_jbod_fp = true;
5798 else
5799 instance->use_seqnum_jbod_fp = false;
5800 }
5801
megasas_setup_reply_map(struct megasas_instance *instance)5802 static void megasas_setup_reply_map(struct megasas_instance *instance)
5803 {
5804 const struct cpumask *mask;
5805 unsigned int queue, cpu, low_latency_index_start;
5806
5807 low_latency_index_start = instance->low_latency_index_start;
5808
5809 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5810 mask = pci_irq_get_affinity(instance->pdev, queue);
5811 if (!mask)
5812 goto fallback;
5813
5814 for_each_cpu(cpu, mask)
5815 instance->reply_map[cpu] = queue;
5816 }
5817 return;
5818
5819 fallback:
5820 queue = low_latency_index_start;
5821 for_each_possible_cpu(cpu) {
5822 instance->reply_map[cpu] = queue;
5823 if (queue == (instance->msix_vectors - 1))
5824 queue = low_latency_index_start;
5825 else
5826 queue++;
5827 }
5828 }
5829
5830 /**
5831 * megasas_get_device_list - Get the PD and LD device list from FW.
5832 * @instance: Adapter soft state
5833 * @return: Success or failure
5834 *
5835 * Issue DCMDs to Firmware to get the PD and LD list.
5836 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5837 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5838 */
5839 static
megasas_get_device_list(struct megasas_instance *instance)5840 int megasas_get_device_list(struct megasas_instance *instance)
5841 {
5842 memset(instance->pd_list, 0,
5843 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5844 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5845
5846 if (instance->enable_fw_dev_list) {
5847 if (megasas_host_device_list_query(instance, true))
5848 return FAILED;
5849 } else {
5850 if (megasas_get_pd_list(instance) < 0) {
5851 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5852 return FAILED;
5853 }
5854
5855 if (megasas_ld_list_query(instance,
5856 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5857 dev_err(&instance->pdev->dev, "failed to get LD list\n");
5858 return FAILED;
5859 }
5860 }
5861
5862 return SUCCESS;
5863 }
5864
5865 /**
5866 * megasas_set_high_iops_queue_affinity_hint - Set affinity hint for high IOPS queues
5867 * @instance: Adapter soft state
5868 * return: void
5869 */
5870 static inline void
megasas_set_high_iops_queue_affinity_hint(struct megasas_instance *instance)5871 megasas_set_high_iops_queue_affinity_hint(struct megasas_instance *instance)
5872 {
5873 int i;
5874 int local_numa_node;
5875
5876 if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5877 local_numa_node = dev_to_node(&instance->pdev->dev);
5878
5879 for (i = 0; i < instance->low_latency_index_start; i++)
5880 irq_set_affinity_hint(pci_irq_vector(instance->pdev, i),
5881 cpumask_of_node(local_numa_node));
5882 }
5883 }
5884
5885 static int
__megasas_alloc_irq_vectors(struct megasas_instance *instance)5886 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5887 {
5888 int i, irq_flags;
5889 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5890 struct irq_affinity *descp = &desc;
5891
5892 irq_flags = PCI_IRQ_MSIX;
5893
5894 if (instance->smp_affinity_enable)
5895 irq_flags |= PCI_IRQ_AFFINITY;
5896 else
5897 descp = NULL;
5898
5899 i = pci_alloc_irq_vectors_affinity(instance->pdev,
5900 instance->low_latency_index_start,
5901 instance->msix_vectors, irq_flags, descp);
5902
5903 return i;
5904 }
5905
5906 /**
5907 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors
5908 * @instance: Adapter soft state
5909 * return: void
5910 */
5911 static void
megasas_alloc_irq_vectors(struct megasas_instance *instance)5912 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5913 {
5914 int i;
5915 unsigned int num_msix_req;
5916
5917 i = __megasas_alloc_irq_vectors(instance);
5918
5919 if ((instance->perf_mode == MR_BALANCED_PERF_MODE) &&
5920 (i != instance->msix_vectors)) {
5921 if (instance->msix_vectors)
5922 pci_free_irq_vectors(instance->pdev);
5923 /* Disable Balanced IOPS mode and try realloc vectors */
5924 instance->perf_mode = MR_LATENCY_PERF_MODE;
5925 instance->low_latency_index_start = 1;
5926 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5927
5928 instance->msix_vectors = min(num_msix_req,
5929 instance->msix_vectors);
5930
5931 i = __megasas_alloc_irq_vectors(instance);
5932
5933 }
5934
5935 dev_info(&instance->pdev->dev,
5936 "requested/available msix %d/%d\n", instance->msix_vectors, i);
5937
5938 if (i > 0)
5939 instance->msix_vectors = i;
5940 else
5941 instance->msix_vectors = 0;
5942
5943 if (instance->smp_affinity_enable)
5944 megasas_set_high_iops_queue_affinity_hint(instance);
5945 }
5946
5947 /**
5948 * megasas_init_fw - Initializes the FW
5949 * @instance: Adapter soft state
5950 *
5951 * This is the main function for initializing firmware
5952 */
5953
megasas_init_fw(struct megasas_instance *instance)5954 static int megasas_init_fw(struct megasas_instance *instance)
5955 {
5956 u32 max_sectors_1;
5957 u32 max_sectors_2, tmp_sectors, msix_enable;
5958 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
5959 resource_size_t base_addr;
5960 void *base_addr_phys;
5961 struct megasas_ctrl_info *ctrl_info = NULL;
5962 unsigned long bar_list;
5963 int i, j, loop;
5964 struct IOV_111 *iovPtr;
5965 struct fusion_context *fusion;
5966 bool intr_coalescing;
5967 unsigned int num_msix_req;
5968 u16 lnksta, speed;
5969
5970 fusion = instance->ctrl_context;
5971
5972 /* Find first memory bar */
5973 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5974 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
5975 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
5976 "megasas: LSI")) {
5977 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5978 return -EBUSY;
5979 }
5980
5981 base_addr = pci_resource_start(instance->pdev, instance->bar);
5982 instance->reg_set = ioremap(base_addr, 8192);
5983
5984 if (!instance->reg_set) {
5985 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5986 goto fail_ioremap;
5987 }
5988
5989 base_addr_phys = &base_addr;
5990 dev_printk(KERN_DEBUG, &instance->pdev->dev,
5991 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n",
5992 instance->bar, base_addr_phys, instance->reg_set);
5993
5994 if (instance->adapter_type != MFI_SERIES)
5995 instance->instancet = &megasas_instance_template_fusion;
5996 else {
5997 switch (instance->pdev->device) {
5998 case PCI_DEVICE_ID_LSI_SAS1078R:
5999 case PCI_DEVICE_ID_LSI_SAS1078DE:
6000 instance->instancet = &megasas_instance_template_ppc;
6001 break;
6002 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
6003 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
6004 instance->instancet = &megasas_instance_template_gen2;
6005 break;
6006 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
6007 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
6008 instance->instancet = &megasas_instance_template_skinny;
6009 break;
6010 case PCI_DEVICE_ID_LSI_SAS1064R:
6011 case PCI_DEVICE_ID_DELL_PERC5:
6012 default:
6013 instance->instancet = &megasas_instance_template_xscale;
6014 instance->pd_list_not_supported = 1;
6015 break;
6016 }
6017 }
6018
6019 if (megasas_transition_to_ready(instance, 0)) {
6020 dev_info(&instance->pdev->dev,
6021 "Failed to transition controller to ready from %s!\n",
6022 __func__);
6023 if (instance->adapter_type != MFI_SERIES) {
6024 status_reg = instance->instancet->read_fw_status_reg(
6025 instance);
6026 if (status_reg & MFI_RESET_ADAPTER) {
6027 if (megasas_adp_reset_wait_for_ready
6028 (instance, true, 0) == FAILED)
6029 goto fail_ready_state;
6030 } else {
6031 goto fail_ready_state;
6032 }
6033 } else {
6034 atomic_set(&instance->fw_reset_no_pci_access, 1);
6035 instance->instancet->adp_reset
6036 (instance, instance->reg_set);
6037 atomic_set(&instance->fw_reset_no_pci_access, 0);
6038
6039 /*waiting for about 30 second before retry*/
6040 ssleep(30);
6041
6042 if (megasas_transition_to_ready(instance, 0))
6043 goto fail_ready_state;
6044 }
6045
6046 dev_info(&instance->pdev->dev,
6047 "FW restarted successfully from %s!\n",
6048 __func__);
6049 }
6050
6051 megasas_init_ctrl_params(instance);
6052
6053 if (megasas_set_dma_mask(instance))
6054 goto fail_ready_state;
6055
6056 if (megasas_alloc_ctrl_mem(instance))
6057 goto fail_alloc_dma_buf;
6058
6059 if (megasas_alloc_ctrl_dma_buffers(instance))
6060 goto fail_alloc_dma_buf;
6061
6062 fusion = instance->ctrl_context;
6063
6064 if (instance->adapter_type >= VENTURA_SERIES) {
6065 scratch_pad_2 =
6066 megasas_readl(instance,
6067 &instance->reg_set->outbound_scratch_pad_2);
6068 instance->max_raid_mapsize = ((scratch_pad_2 >>
6069 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
6070 MR_MAX_RAID_MAP_SIZE_MASK);
6071 }
6072
6073 instance->enable_sdev_max_qd = enable_sdev_max_qd;
6074
6075 switch (instance->adapter_type) {
6076 case VENTURA_SERIES:
6077 fusion->pcie_bw_limitation = true;
6078 break;
6079 case AERO_SERIES:
6080 fusion->r56_div_offload = true;
6081 break;
6082 default:
6083 break;
6084 }
6085
6086 /* Check if MSI-X is supported while in ready state */
6087 msix_enable = (instance->instancet->read_fw_status_reg(instance) &
6088 0x4000000) >> 0x1a;
6089 if (msix_enable && !msix_disable) {
6090
6091 scratch_pad_1 = megasas_readl
6092 (instance, &instance->reg_set->outbound_scratch_pad_1);
6093 /* Check max MSI-X vectors */
6094 if (fusion) {
6095 if (instance->adapter_type == THUNDERBOLT_SERIES) {
6096 /* Thunderbolt Series*/
6097 instance->msix_vectors = (scratch_pad_1
6098 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6099 } else {
6100 instance->msix_vectors = ((scratch_pad_1
6101 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6102 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6103
6104 /*
6105 * For Invader series, > 8 MSI-x vectors
6106 * supported by FW/HW implies combined
6107 * reply queue mode is enabled.
6108 * For Ventura series, > 16 MSI-x vectors
6109 * supported by FW/HW implies combined
6110 * reply queue mode is enabled.
6111 */
6112 switch (instance->adapter_type) {
6113 case INVADER_SERIES:
6114 if (instance->msix_vectors > 8)
6115 instance->msix_combined = true;
6116 break;
6117 case AERO_SERIES:
6118 case VENTURA_SERIES:
6119 if (instance->msix_vectors > 16)
6120 instance->msix_combined = true;
6121 break;
6122 }
6123
6124 if (rdpq_enable)
6125 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6126 1 : 0;
6127
6128 if (instance->adapter_type >= INVADER_SERIES &&
6129 !instance->msix_combined) {
6130 instance->msix_load_balance = true;
6131 instance->smp_affinity_enable = false;
6132 }
6133
6134 /* Save 1-15 reply post index address to local memory
6135 * Index 0 is already saved from reg offset
6136 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6137 */
6138 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6139 instance->reply_post_host_index_addr[loop] =
6140 (u32 __iomem *)
6141 ((u8 __iomem *)instance->reg_set +
6142 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6143 + (loop * 0x10));
6144 }
6145 }
6146
6147 dev_info(&instance->pdev->dev,
6148 "firmware supports msix\t: (%d)",
6149 instance->msix_vectors);
6150 if (msix_vectors)
6151 instance->msix_vectors = min(msix_vectors,
6152 instance->msix_vectors);
6153 } else /* MFI adapters */
6154 instance->msix_vectors = 1;
6155
6156
6157 /*
6158 * For Aero (if some conditions are met), driver will configure a
6159 * few additional reply queues with interrupt coalescing enabled.
6160 * These queues with interrupt coalescing enabled are called
6161 * High IOPS queues and rest of reply queues (based on number of
6162 * logical CPUs) are termed as Low latency queues.
6163 *
6164 * Total Number of reply queues = High IOPS queues + low latency queues
6165 *
6166 * For rest of fusion adapters, 1 additional reply queue will be
6167 * reserved for management commands, rest of reply queues
6168 * (based on number of logical CPUs) will be used for IOs and
6169 * referenced as IO queues.
6170 * Total Number of reply queues = 1 + IO queues
6171 *
6172 * MFI adapters supports single MSI-x so single reply queue
6173 * will be used for IO and management commands.
6174 */
6175
6176 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6177 true : false;
6178 if (intr_coalescing &&
6179 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6180 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6181 instance->perf_mode = MR_BALANCED_PERF_MODE;
6182 else
6183 instance->perf_mode = MR_LATENCY_PERF_MODE;
6184
6185
6186 if (instance->adapter_type == AERO_SERIES) {
6187 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6188 speed = lnksta & PCI_EXP_LNKSTA_CLS;
6189
6190 /*
6191 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6192 * in latency perf mode and enable R1 PCI bandwidth algorithm
6193 */
6194 if (speed < 0x4) {
6195 instance->perf_mode = MR_LATENCY_PERF_MODE;
6196 fusion->pcie_bw_limitation = true;
6197 }
6198
6199 /*
6200 * Performance mode settings provided through module parameter-perf_mode will
6201 * take affect only for:
6202 * 1. Aero family of adapters.
6203 * 2. When user sets module parameter- perf_mode in range of 0-2.
6204 */
6205 if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6206 (perf_mode <= MR_LATENCY_PERF_MODE))
6207 instance->perf_mode = perf_mode;
6208 /*
6209 * If intr coalescing is not supported by controller FW, then IOPS
6210 * and Balanced modes are not feasible.
6211 */
6212 if (!intr_coalescing)
6213 instance->perf_mode = MR_LATENCY_PERF_MODE;
6214
6215 }
6216
6217 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6218 instance->low_latency_index_start =
6219 MR_HIGH_IOPS_QUEUE_COUNT;
6220 else
6221 instance->low_latency_index_start = 1;
6222
6223 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6224
6225 instance->msix_vectors = min(num_msix_req,
6226 instance->msix_vectors);
6227
6228 megasas_alloc_irq_vectors(instance);
6229 if (!instance->msix_vectors)
6230 instance->msix_load_balance = false;
6231 }
6232 /*
6233 * MSI-X host index 0 is common for all adapter.
6234 * It is used for all MPT based Adapters.
6235 */
6236 if (instance->msix_combined) {
6237 instance->reply_post_host_index_addr[0] =
6238 (u32 *)((u8 *)instance->reg_set +
6239 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6240 } else {
6241 instance->reply_post_host_index_addr[0] =
6242 (u32 *)((u8 *)instance->reg_set +
6243 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6244 }
6245
6246 if (!instance->msix_vectors) {
6247 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
6248 if (i < 0)
6249 goto fail_init_adapter;
6250 }
6251
6252 megasas_setup_reply_map(instance);
6253
6254 dev_info(&instance->pdev->dev,
6255 "current msix/online cpus\t: (%d/%d)\n",
6256 instance->msix_vectors, (unsigned int)num_online_cpus());
6257 dev_info(&instance->pdev->dev,
6258 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6259
6260 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6261 (unsigned long)instance);
6262
6263 /*
6264 * Below are default value for legacy Firmware.
6265 * non-fusion based controllers
6266 */
6267 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6268 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6269 /* Get operational params, sge flags, send init cmd to controller */
6270 if (instance->instancet->init_adapter(instance))
6271 goto fail_init_adapter;
6272
6273 if (instance->adapter_type >= VENTURA_SERIES) {
6274 scratch_pad_3 =
6275 megasas_readl(instance,
6276 &instance->reg_set->outbound_scratch_pad_3);
6277 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6278 MR_DEFAULT_NVME_PAGE_SHIFT)
6279 instance->nvme_page_size =
6280 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6281
6282 dev_info(&instance->pdev->dev,
6283 "NVME page size\t: (%d)\n", instance->nvme_page_size);
6284 }
6285
6286 if (instance->msix_vectors ?
6287 megasas_setup_irqs_msix(instance, 1) :
6288 megasas_setup_irqs_ioapic(instance))
6289 goto fail_init_adapter;
6290
6291 if (instance->adapter_type != MFI_SERIES)
6292 megasas_setup_irq_poll(instance);
6293
6294 instance->instancet->enable_intr(instance);
6295
6296 dev_info(&instance->pdev->dev, "INIT adapter done\n");
6297
6298 megasas_setup_jbod_map(instance);
6299
6300 if (megasas_get_device_list(instance) != SUCCESS) {
6301 dev_err(&instance->pdev->dev,
6302 "%s: megasas_get_device_list failed\n",
6303 __func__);
6304 goto fail_get_ld_pd_list;
6305 }
6306
6307 /* stream detection initialization */
6308 if (instance->adapter_type >= VENTURA_SERIES) {
6309 fusion->stream_detect_by_ld =
6310 kcalloc(MAX_LOGICAL_DRIVES_EXT,
6311 sizeof(struct LD_STREAM_DETECT *),
6312 GFP_KERNEL);
6313 if (!fusion->stream_detect_by_ld) {
6314 dev_err(&instance->pdev->dev,
6315 "unable to allocate stream detection for pool of LDs\n");
6316 goto fail_get_ld_pd_list;
6317 }
6318 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6319 fusion->stream_detect_by_ld[i] =
6320 kzalloc(sizeof(struct LD_STREAM_DETECT),
6321 GFP_KERNEL);
6322 if (!fusion->stream_detect_by_ld[i]) {
6323 dev_err(&instance->pdev->dev,
6324 "unable to allocate stream detect by LD\n ");
6325 for (j = 0; j < i; ++j)
6326 kfree(fusion->stream_detect_by_ld[j]);
6327 kfree(fusion->stream_detect_by_ld);
6328 fusion->stream_detect_by_ld = NULL;
6329 goto fail_get_ld_pd_list;
6330 }
6331 fusion->stream_detect_by_ld[i]->mru_bit_map
6332 = MR_STREAM_BITMAP;
6333 }
6334 }
6335
6336 /*
6337 * Compute the max allowed sectors per IO: The controller info has two
6338 * limits on max sectors. Driver should use the minimum of these two.
6339 *
6340 * 1 << stripe_sz_ops.min = max sectors per strip
6341 *
6342 * Note that older firmwares ( < FW ver 30) didn't report information
6343 * to calculate max_sectors_1. So the number ended up as zero always.
6344 */
6345 tmp_sectors = 0;
6346 ctrl_info = instance->ctrl_info_buf;
6347
6348 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6349 le16_to_cpu(ctrl_info->max_strips_per_io);
6350 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6351
6352 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6353
6354 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6355 instance->passive = ctrl_info->cluster.passive;
6356 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6357 instance->UnevenSpanSupport =
6358 ctrl_info->adapterOperations2.supportUnevenSpans;
6359 if (instance->UnevenSpanSupport) {
6360 struct fusion_context *fusion = instance->ctrl_context;
6361 if (MR_ValidateMapInfo(instance, instance->map_id))
6362 fusion->fast_path_io = 1;
6363 else
6364 fusion->fast_path_io = 0;
6365
6366 }
6367 if (ctrl_info->host_interface.SRIOV) {
6368 instance->requestorId = ctrl_info->iov.requestorId;
6369 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6370 if (!ctrl_info->adapterOperations2.activePassive)
6371 instance->PlasmaFW111 = 1;
6372
6373 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6374 instance->PlasmaFW111 ? "1.11" : "new");
6375
6376 if (instance->PlasmaFW111) {
6377 iovPtr = (struct IOV_111 *)
6378 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6379 instance->requestorId = iovPtr->requestorId;
6380 }
6381 }
6382 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6383 instance->requestorId);
6384 }
6385
6386 instance->crash_dump_fw_support =
6387 ctrl_info->adapterOperations3.supportCrashDump;
6388 instance->crash_dump_drv_support =
6389 (instance->crash_dump_fw_support &&
6390 instance->crash_dump_buf);
6391 if (instance->crash_dump_drv_support)
6392 megasas_set_crash_dump_params(instance,
6393 MR_CRASH_BUF_TURN_OFF);
6394
6395 else {
6396 if (instance->crash_dump_buf)
6397 dma_free_coherent(&instance->pdev->dev,
6398 CRASH_DMA_BUF_SIZE,
6399 instance->crash_dump_buf,
6400 instance->crash_dump_h);
6401 instance->crash_dump_buf = NULL;
6402 }
6403
6404 if (instance->snapdump_wait_time) {
6405 megasas_get_snapdump_properties(instance);
6406 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6407 instance->snapdump_wait_time);
6408 }
6409
6410 dev_info(&instance->pdev->dev,
6411 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6412 le16_to_cpu(ctrl_info->pci.vendor_id),
6413 le16_to_cpu(ctrl_info->pci.device_id),
6414 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6415 le16_to_cpu(ctrl_info->pci.sub_device_id));
6416 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
6417 instance->UnevenSpanSupport ? "yes" : "no");
6418 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
6419 instance->crash_dump_drv_support ? "yes" : "no");
6420 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n",
6421 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6422
6423 instance->max_sectors_per_req = instance->max_num_sge *
6424 SGE_BUFFER_SIZE / 512;
6425 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6426 instance->max_sectors_per_req = tmp_sectors;
6427
6428 /* Check for valid throttlequeuedepth module parameter */
6429 if (throttlequeuedepth &&
6430 throttlequeuedepth <= instance->max_scsi_cmds)
6431 instance->throttlequeuedepth = throttlequeuedepth;
6432 else
6433 instance->throttlequeuedepth =
6434 MEGASAS_THROTTLE_QUEUE_DEPTH;
6435
6436 if ((resetwaittime < 1) ||
6437 (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6438 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6439
6440 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6441 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6442
6443 /* Launch SR-IOV heartbeat timer */
6444 if (instance->requestorId) {
6445 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6446 megasas_start_timer(instance);
6447 } else {
6448 instance->skip_heartbeat_timer_del = 1;
6449 goto fail_get_ld_pd_list;
6450 }
6451 }
6452
6453 /*
6454 * Create and start watchdog thread which will monitor
6455 * controller state every 1 sec and trigger OCR when
6456 * it enters fault state
6457 */
6458 if (instance->adapter_type != MFI_SERIES)
6459 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6460 goto fail_start_watchdog;
6461
6462 return 0;
6463
6464 fail_start_watchdog:
6465 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6466 del_timer_sync(&instance->sriov_heartbeat_timer);
6467 fail_get_ld_pd_list:
6468 instance->instancet->disable_intr(instance);
6469 megasas_destroy_irqs(instance);
6470 fail_init_adapter:
6471 if (instance->msix_vectors)
6472 pci_free_irq_vectors(instance->pdev);
6473 instance->msix_vectors = 0;
6474 fail_alloc_dma_buf:
6475 megasas_free_ctrl_dma_buffers(instance);
6476 megasas_free_ctrl_mem(instance);
6477 fail_ready_state:
6478 iounmap(instance->reg_set);
6479
6480 fail_ioremap:
6481 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6482
6483 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6484 __func__, __LINE__);
6485 return -EINVAL;
6486 }
6487
6488 /**
6489 * megasas_release_mfi - Reverses the FW initialization
6490 * @instance: Adapter soft state
6491 */
megasas_release_mfi(struct megasas_instance *instance)6492 static void megasas_release_mfi(struct megasas_instance *instance)
6493 {
6494 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6495
6496 if (instance->reply_queue)
6497 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6498 instance->reply_queue, instance->reply_queue_h);
6499
6500 megasas_free_cmds(instance);
6501
6502 iounmap(instance->reg_set);
6503
6504 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6505 }
6506
6507 /**
6508 * megasas_get_seq_num - Gets latest event sequence numbers
6509 * @instance: Adapter soft state
6510 * @eli: FW event log sequence numbers information
6511 *
6512 * FW maintains a log of all events in a non-volatile area. Upper layers would
6513 * usually find out the latest sequence number of the events, the seq number at
6514 * the boot etc. They would "read" all the events below the latest seq number
6515 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6516 * number), they would subsribe to AEN (asynchronous event notification) and
6517 * wait for the events to happen.
6518 */
6519 static int
megasas_get_seq_num(struct megasas_instance *instance, struct megasas_evt_log_info *eli)6520 megasas_get_seq_num(struct megasas_instance *instance,
6521 struct megasas_evt_log_info *eli)
6522 {
6523 struct megasas_cmd *cmd;
6524 struct megasas_dcmd_frame *dcmd;
6525 struct megasas_evt_log_info *el_info;
6526 dma_addr_t el_info_h = 0;
6527 int ret;
6528
6529 cmd = megasas_get_cmd(instance);
6530
6531 if (!cmd) {
6532 return -ENOMEM;
6533 }
6534
6535 dcmd = &cmd->frame->dcmd;
6536 el_info = dma_alloc_coherent(&instance->pdev->dev,
6537 sizeof(struct megasas_evt_log_info),
6538 &el_info_h, GFP_KERNEL);
6539 if (!el_info) {
6540 megasas_return_cmd(instance, cmd);
6541 return -ENOMEM;
6542 }
6543
6544 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6545
6546 dcmd->cmd = MFI_CMD_DCMD;
6547 dcmd->cmd_status = 0x0;
6548 dcmd->sge_count = 1;
6549 dcmd->flags = MFI_FRAME_DIR_READ;
6550 dcmd->timeout = 0;
6551 dcmd->pad_0 = 0;
6552 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6553 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6554
6555 megasas_set_dma_settings(instance, dcmd, el_info_h,
6556 sizeof(struct megasas_evt_log_info));
6557
6558 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6559 if (ret != DCMD_SUCCESS) {
6560 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6561 __func__, __LINE__);
6562 goto dcmd_failed;
6563 }
6564
6565 /*
6566 * Copy the data back into callers buffer
6567 */
6568 eli->newest_seq_num = el_info->newest_seq_num;
6569 eli->oldest_seq_num = el_info->oldest_seq_num;
6570 eli->clear_seq_num = el_info->clear_seq_num;
6571 eli->shutdown_seq_num = el_info->shutdown_seq_num;
6572 eli->boot_seq_num = el_info->boot_seq_num;
6573
6574 dcmd_failed:
6575 dma_free_coherent(&instance->pdev->dev,
6576 sizeof(struct megasas_evt_log_info),
6577 el_info, el_info_h);
6578
6579 megasas_return_cmd(instance, cmd);
6580
6581 return ret;
6582 }
6583
6584 /**
6585 * megasas_register_aen - Registers for asynchronous event notification
6586 * @instance: Adapter soft state
6587 * @seq_num: The starting sequence number
6588 * @class_locale_word: Class of the event
6589 *
6590 * This function subscribes for AEN for events beyond the @seq_num. It requests
6591 * to be notified if and only if the event is of type @class_locale
6592 */
6593 static int
megasas_register_aen(struct megasas_instance *instance, u32 seq_num, u32 class_locale_word)6594 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6595 u32 class_locale_word)
6596 {
6597 int ret_val;
6598 struct megasas_cmd *cmd;
6599 struct megasas_dcmd_frame *dcmd;
6600 union megasas_evt_class_locale curr_aen;
6601 union megasas_evt_class_locale prev_aen;
6602
6603 /*
6604 * If there an AEN pending already (aen_cmd), check if the
6605 * class_locale of that pending AEN is inclusive of the new
6606 * AEN request we currently have. If it is, then we don't have
6607 * to do anything. In other words, whichever events the current
6608 * AEN request is subscribing to, have already been subscribed
6609 * to.
6610 *
6611 * If the old_cmd is _not_ inclusive, then we have to abort
6612 * that command, form a class_locale that is superset of both
6613 * old and current and re-issue to the FW
6614 */
6615
6616 curr_aen.word = class_locale_word;
6617
6618 if (instance->aen_cmd) {
6619
6620 prev_aen.word =
6621 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6622
6623 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6624 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6625 dev_info(&instance->pdev->dev,
6626 "%s %d out of range class %d send by application\n",
6627 __func__, __LINE__, curr_aen.members.class);
6628 return 0;
6629 }
6630
6631 /*
6632 * A class whose enum value is smaller is inclusive of all
6633 * higher values. If a PROGRESS (= -1) was previously
6634 * registered, then a new registration requests for higher
6635 * classes need not be sent to FW. They are automatically
6636 * included.
6637 *
6638 * Locale numbers don't have such hierarchy. They are bitmap
6639 * values
6640 */
6641 if ((prev_aen.members.class <= curr_aen.members.class) &&
6642 !((prev_aen.members.locale & curr_aen.members.locale) ^
6643 curr_aen.members.locale)) {
6644 /*
6645 * Previously issued event registration includes
6646 * current request. Nothing to do.
6647 */
6648 return 0;
6649 } else {
6650 curr_aen.members.locale |= prev_aen.members.locale;
6651
6652 if (prev_aen.members.class < curr_aen.members.class)
6653 curr_aen.members.class = prev_aen.members.class;
6654
6655 instance->aen_cmd->abort_aen = 1;
6656 ret_val = megasas_issue_blocked_abort_cmd(instance,
6657 instance->
6658 aen_cmd, 30);
6659
6660 if (ret_val) {
6661 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6662 "previous AEN command\n");
6663 return ret_val;
6664 }
6665 }
6666 }
6667
6668 cmd = megasas_get_cmd(instance);
6669
6670 if (!cmd)
6671 return -ENOMEM;
6672
6673 dcmd = &cmd->frame->dcmd;
6674
6675 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6676
6677 /*
6678 * Prepare DCMD for aen registration
6679 */
6680 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6681
6682 dcmd->cmd = MFI_CMD_DCMD;
6683 dcmd->cmd_status = 0x0;
6684 dcmd->sge_count = 1;
6685 dcmd->flags = MFI_FRAME_DIR_READ;
6686 dcmd->timeout = 0;
6687 dcmd->pad_0 = 0;
6688 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6689 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6690 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6691 instance->last_seq_num = seq_num;
6692 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6693
6694 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6695 sizeof(struct megasas_evt_detail));
6696
6697 if (instance->aen_cmd != NULL) {
6698 megasas_return_cmd(instance, cmd);
6699 return 0;
6700 }
6701
6702 /*
6703 * Store reference to the cmd used to register for AEN. When an
6704 * application wants us to register for AEN, we have to abort this
6705 * cmd and re-register with a new EVENT LOCALE supplied by that app
6706 */
6707 instance->aen_cmd = cmd;
6708
6709 /*
6710 * Issue the aen registration frame
6711 */
6712 instance->instancet->issue_dcmd(instance, cmd);
6713
6714 return 0;
6715 }
6716
6717 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6718 *
6719 * This DCMD will fetch few properties of LD/system PD defined
6720 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6721 *
6722 * DCMD send by drivers whenever new target is added to the OS.
6723 *
6724 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP
6725 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD.
6726 * 0 = system PD, 1 = LD.
6727 * dcmd.mbox.s[1] - TargetID for LD/system PD.
6728 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES.
6729 *
6730 * @instance: Adapter soft state
6731 * @sdev: OS provided scsi device
6732 *
6733 * Returns 0 on success non-zero on failure.
6734 */
6735 int
megasas_get_target_prop(struct megasas_instance *instance, struct scsi_device *sdev)6736 megasas_get_target_prop(struct megasas_instance *instance,
6737 struct scsi_device *sdev)
6738 {
6739 int ret;
6740 struct megasas_cmd *cmd;
6741 struct megasas_dcmd_frame *dcmd;
6742 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6743 sdev->id;
6744
6745 cmd = megasas_get_cmd(instance);
6746
6747 if (!cmd) {
6748 dev_err(&instance->pdev->dev,
6749 "Failed to get cmd %s\n", __func__);
6750 return -ENOMEM;
6751 }
6752
6753 dcmd = &cmd->frame->dcmd;
6754
6755 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6756 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6757 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6758
6759 dcmd->mbox.s[1] = cpu_to_le16(targetId);
6760 dcmd->cmd = MFI_CMD_DCMD;
6761 dcmd->cmd_status = 0xFF;
6762 dcmd->sge_count = 1;
6763 dcmd->flags = MFI_FRAME_DIR_READ;
6764 dcmd->timeout = 0;
6765 dcmd->pad_0 = 0;
6766 dcmd->data_xfer_len =
6767 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6768 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6769
6770 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6771 sizeof(struct MR_TARGET_PROPERTIES));
6772
6773 if ((instance->adapter_type != MFI_SERIES) &&
6774 !instance->mask_interrupts)
6775 ret = megasas_issue_blocked_cmd(instance,
6776 cmd, MFI_IO_TIMEOUT_SECS);
6777 else
6778 ret = megasas_issue_polled(instance, cmd);
6779
6780 switch (ret) {
6781 case DCMD_TIMEOUT:
6782 switch (dcmd_timeout_ocr_possible(instance)) {
6783 case INITIATE_OCR:
6784 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6785 mutex_unlock(&instance->reset_mutex);
6786 megasas_reset_fusion(instance->host,
6787 MFI_IO_TIMEOUT_OCR);
6788 mutex_lock(&instance->reset_mutex);
6789 break;
6790 case KILL_ADAPTER:
6791 megaraid_sas_kill_hba(instance);
6792 break;
6793 case IGNORE_TIMEOUT:
6794 dev_info(&instance->pdev->dev,
6795 "Ignore DCMD timeout: %s %d\n",
6796 __func__, __LINE__);
6797 break;
6798 }
6799 break;
6800
6801 default:
6802 megasas_return_cmd(instance, cmd);
6803 }
6804 if (ret != DCMD_SUCCESS)
6805 dev_err(&instance->pdev->dev,
6806 "return from %s %d return value %d\n",
6807 __func__, __LINE__, ret);
6808
6809 return ret;
6810 }
6811
6812 /**
6813 * megasas_start_aen - Subscribes to AEN during driver load time
6814 * @instance: Adapter soft state
6815 */
megasas_start_aen(struct megasas_instance *instance)6816 static int megasas_start_aen(struct megasas_instance *instance)
6817 {
6818 struct megasas_evt_log_info eli;
6819 union megasas_evt_class_locale class_locale;
6820
6821 /*
6822 * Get the latest sequence number from FW
6823 */
6824 memset(&eli, 0, sizeof(eli));
6825
6826 if (megasas_get_seq_num(instance, &eli))
6827 return -1;
6828
6829 /*
6830 * Register AEN with FW for latest sequence number plus 1
6831 */
6832 class_locale.members.reserved = 0;
6833 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6834 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6835
6836 return megasas_register_aen(instance,
6837 le32_to_cpu(eli.newest_seq_num) + 1,
6838 class_locale.word);
6839 }
6840
6841 /**
6842 * megasas_io_attach - Attaches this driver to SCSI mid-layer
6843 * @instance: Adapter soft state
6844 */
megasas_io_attach(struct megasas_instance *instance)6845 static int megasas_io_attach(struct megasas_instance *instance)
6846 {
6847 struct Scsi_Host *host = instance->host;
6848
6849 /*
6850 * Export parameters required by SCSI mid-layer
6851 */
6852 host->unique_id = instance->unique_id;
6853 host->can_queue = instance->max_scsi_cmds;
6854 host->this_id = instance->init_id;
6855 host->sg_tablesize = instance->max_num_sge;
6856
6857 if (instance->fw_support_ieee)
6858 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6859
6860 /*
6861 * Check if the module parameter value for max_sectors can be used
6862 */
6863 if (max_sectors && max_sectors < instance->max_sectors_per_req)
6864 instance->max_sectors_per_req = max_sectors;
6865 else {
6866 if (max_sectors) {
6867 if (((instance->pdev->device ==
6868 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6869 (instance->pdev->device ==
6870 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6871 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6872 instance->max_sectors_per_req = max_sectors;
6873 } else {
6874 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6875 "and <= %d (or < 1MB for GEN2 controller)\n",
6876 instance->max_sectors_per_req);
6877 }
6878 }
6879 }
6880
6881 host->max_sectors = instance->max_sectors_per_req;
6882 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6883 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6884 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6885 host->max_lun = MEGASAS_MAX_LUN;
6886 host->max_cmd_len = 16;
6887
6888 /* Use shared host tagset only for fusion adaptors
6889 * if there are managed interrupts (smp affinity enabled case).
6890 * Single msix_vectors in kdump, so shared host tag is also disabled.
6891 */
6892
6893 host->host_tagset = 0;
6894 host->nr_hw_queues = 1;
6895
6896 if ((instance->adapter_type != MFI_SERIES) &&
6897 (instance->msix_vectors > instance->low_latency_index_start) &&
6898 host_tagset_enable &&
6899 instance->smp_affinity_enable) {
6900 host->host_tagset = 1;
6901 host->nr_hw_queues = instance->msix_vectors -
6902 instance->low_latency_index_start;
6903 }
6904
6905 dev_info(&instance->pdev->dev,
6906 "Max firmware commands: %d shared with nr_hw_queues = %d\n",
6907 instance->max_fw_cmds, host->nr_hw_queues);
6908 /*
6909 * Notify the mid-layer about the new controller
6910 */
6911 if (scsi_add_host(host, &instance->pdev->dev)) {
6912 dev_err(&instance->pdev->dev,
6913 "Failed to add host from %s %d\n",
6914 __func__, __LINE__);
6915 return -ENODEV;
6916 }
6917
6918 return 0;
6919 }
6920
6921 /**
6922 * megasas_set_dma_mask - Set DMA mask for supported controllers
6923 *
6924 * @instance: Adapter soft state
6925 * Description:
6926 *
6927 * For Ventura, driver/FW will operate in 63bit DMA addresses.
6928 *
6929 * For invader-
6930 * By default, driver/FW will operate in 32bit DMA addresses
6931 * for consistent DMA mapping but if 32 bit consistent
6932 * DMA mask fails, driver will try with 63 bit consistent
6933 * mask provided FW is true 63bit DMA capable
6934 *
6935 * For older controllers(Thunderbolt and MFI based adapters)-
6936 * driver/FW will operate in 32 bit consistent DMA addresses.
6937 */
6938 static int
megasas_set_dma_mask(struct megasas_instance *instance)6939 megasas_set_dma_mask(struct megasas_instance *instance)
6940 {
6941 u64 consistent_mask;
6942 struct pci_dev *pdev;
6943 u32 scratch_pad_1;
6944
6945 pdev = instance->pdev;
6946 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
6947 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
6948
6949 if (IS_DMA64) {
6950 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
6951 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6952 goto fail_set_dma_mask;
6953
6954 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
6955 (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
6956 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
6957 /*
6958 * If 32 bit DMA mask fails, then try for 64 bit mask
6959 * for FW capable of handling 64 bit DMA.
6960 */
6961 scratch_pad_1 = megasas_readl
6962 (instance, &instance->reg_set->outbound_scratch_pad_1);
6963
6964 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
6965 goto fail_set_dma_mask;
6966 else if (dma_set_mask_and_coherent(&pdev->dev,
6967 DMA_BIT_MASK(63)))
6968 goto fail_set_dma_mask;
6969 }
6970 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6971 goto fail_set_dma_mask;
6972
6973 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
6974 instance->consistent_mask_64bit = false;
6975 else
6976 instance->consistent_mask_64bit = true;
6977
6978 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
6979 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
6980 (instance->consistent_mask_64bit ? "63" : "32"));
6981
6982 return 0;
6983
6984 fail_set_dma_mask:
6985 dev_err(&pdev->dev, "Failed to set DMA mask\n");
6986 return -1;
6987
6988 }
6989
6990 /*
6991 * megasas_set_adapter_type - Set adapter type.
6992 * Supported controllers can be divided in
6993 * different categories-
6994 * enum MR_ADAPTER_TYPE {
6995 * MFI_SERIES = 1,
6996 * THUNDERBOLT_SERIES = 2,
6997 * INVADER_SERIES = 3,
6998 * VENTURA_SERIES = 4,
6999 * AERO_SERIES = 5,
7000 * };
7001 * @instance: Adapter soft state
7002 * return: void
7003 */
megasas_set_adapter_type(struct megasas_instance *instance)7004 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
7005 {
7006 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
7007 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
7008 instance->adapter_type = MFI_SERIES;
7009 } else {
7010 switch (instance->pdev->device) {
7011 case PCI_DEVICE_ID_LSI_AERO_10E1:
7012 case PCI_DEVICE_ID_LSI_AERO_10E2:
7013 case PCI_DEVICE_ID_LSI_AERO_10E5:
7014 case PCI_DEVICE_ID_LSI_AERO_10E6:
7015 instance->adapter_type = AERO_SERIES;
7016 break;
7017 case PCI_DEVICE_ID_LSI_VENTURA:
7018 case PCI_DEVICE_ID_LSI_CRUSADER:
7019 case PCI_DEVICE_ID_LSI_HARPOON:
7020 case PCI_DEVICE_ID_LSI_TOMCAT:
7021 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
7022 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
7023 instance->adapter_type = VENTURA_SERIES;
7024 break;
7025 case PCI_DEVICE_ID_LSI_FUSION:
7026 case PCI_DEVICE_ID_LSI_PLASMA:
7027 instance->adapter_type = THUNDERBOLT_SERIES;
7028 break;
7029 case PCI_DEVICE_ID_LSI_INVADER:
7030 case PCI_DEVICE_ID_LSI_INTRUDER:
7031 case PCI_DEVICE_ID_LSI_INTRUDER_24:
7032 case PCI_DEVICE_ID_LSI_CUTLASS_52:
7033 case PCI_DEVICE_ID_LSI_CUTLASS_53:
7034 case PCI_DEVICE_ID_LSI_FURY:
7035 instance->adapter_type = INVADER_SERIES;
7036 break;
7037 default: /* For all other supported controllers */
7038 instance->adapter_type = MFI_SERIES;
7039 break;
7040 }
7041 }
7042 }
7043
megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)7044 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
7045 {
7046 instance->producer = dma_alloc_coherent(&instance->pdev->dev,
7047 sizeof(u32), &instance->producer_h, GFP_KERNEL);
7048 instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
7049 sizeof(u32), &instance->consumer_h, GFP_KERNEL);
7050
7051 if (!instance->producer || !instance->consumer) {
7052 dev_err(&instance->pdev->dev,
7053 "Failed to allocate memory for producer, consumer\n");
7054 return -1;
7055 }
7056
7057 *instance->producer = 0;
7058 *instance->consumer = 0;
7059 return 0;
7060 }
7061
7062 /**
7063 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data
7064 * structures which are not common across MFI
7065 * adapters and fusion adapters.
7066 * For MFI based adapters, allocate producer and
7067 * consumer buffers. For fusion adapters, allocate
7068 * memory for fusion context.
7069 * @instance: Adapter soft state
7070 * return: 0 for SUCCESS
7071 */
megasas_alloc_ctrl_mem(struct megasas_instance *instance)7072 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
7073 {
7074 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
7075 GFP_KERNEL);
7076 if (!instance->reply_map)
7077 return -ENOMEM;
7078
7079 switch (instance->adapter_type) {
7080 case MFI_SERIES:
7081 if (megasas_alloc_mfi_ctrl_mem(instance))
7082 goto fail;
7083 break;
7084 case AERO_SERIES:
7085 case VENTURA_SERIES:
7086 case THUNDERBOLT_SERIES:
7087 case INVADER_SERIES:
7088 if (megasas_alloc_fusion_context(instance))
7089 goto fail;
7090 break;
7091 }
7092
7093 return 0;
7094 fail:
7095 kfree(instance->reply_map);
7096 instance->reply_map = NULL;
7097 return -ENOMEM;
7098 }
7099
7100 /*
7101 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and
7102 * producer, consumer buffers for MFI adapters
7103 *
7104 * @instance - Adapter soft instance
7105 *
7106 */
megasas_free_ctrl_mem(struct megasas_instance *instance)7107 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
7108 {
7109 kfree(instance->reply_map);
7110 if (instance->adapter_type == MFI_SERIES) {
7111 if (instance->producer)
7112 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7113 instance->producer,
7114 instance->producer_h);
7115 if (instance->consumer)
7116 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7117 instance->consumer,
7118 instance->consumer_h);
7119 } else {
7120 megasas_free_fusion_context(instance);
7121 }
7122 }
7123
7124 /**
7125 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during
7126 * driver load time
7127 *
7128 * @instance: Adapter soft instance
7129 *
7130 * @return: O for SUCCESS
7131 */
7132 static inline
megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)7133 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7134 {
7135 struct pci_dev *pdev = instance->pdev;
7136 struct fusion_context *fusion = instance->ctrl_context;
7137
7138 instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7139 sizeof(struct megasas_evt_detail),
7140 &instance->evt_detail_h, GFP_KERNEL);
7141
7142 if (!instance->evt_detail) {
7143 dev_err(&instance->pdev->dev,
7144 "Failed to allocate event detail buffer\n");
7145 return -ENOMEM;
7146 }
7147
7148 if (fusion) {
7149 fusion->ioc_init_request =
7150 dma_alloc_coherent(&pdev->dev,
7151 sizeof(struct MPI2_IOC_INIT_REQUEST),
7152 &fusion->ioc_init_request_phys,
7153 GFP_KERNEL);
7154
7155 if (!fusion->ioc_init_request) {
7156 dev_err(&pdev->dev,
7157 "Failed to allocate PD list buffer\n");
7158 return -ENOMEM;
7159 }
7160
7161 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7162 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7163 &instance->snapdump_prop_h, GFP_KERNEL);
7164
7165 if (!instance->snapdump_prop)
7166 dev_err(&pdev->dev,
7167 "Failed to allocate snapdump properties buffer\n");
7168
7169 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7170 HOST_DEVICE_LIST_SZ,
7171 &instance->host_device_list_buf_h,
7172 GFP_KERNEL);
7173
7174 if (!instance->host_device_list_buf) {
7175 dev_err(&pdev->dev,
7176 "Failed to allocate targetid list buffer\n");
7177 return -ENOMEM;
7178 }
7179
7180 }
7181
7182 instance->pd_list_buf =
7183 dma_alloc_coherent(&pdev->dev,
7184 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7185 &instance->pd_list_buf_h, GFP_KERNEL);
7186
7187 if (!instance->pd_list_buf) {
7188 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7189 return -ENOMEM;
7190 }
7191
7192 instance->ctrl_info_buf =
7193 dma_alloc_coherent(&pdev->dev,
7194 sizeof(struct megasas_ctrl_info),
7195 &instance->ctrl_info_buf_h, GFP_KERNEL);
7196
7197 if (!instance->ctrl_info_buf) {
7198 dev_err(&pdev->dev,
7199 "Failed to allocate controller info buffer\n");
7200 return -ENOMEM;
7201 }
7202
7203 instance->ld_list_buf =
7204 dma_alloc_coherent(&pdev->dev,
7205 sizeof(struct MR_LD_LIST),
7206 &instance->ld_list_buf_h, GFP_KERNEL);
7207
7208 if (!instance->ld_list_buf) {
7209 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7210 return -ENOMEM;
7211 }
7212
7213 instance->ld_targetid_list_buf =
7214 dma_alloc_coherent(&pdev->dev,
7215 sizeof(struct MR_LD_TARGETID_LIST),
7216 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7217
7218 if (!instance->ld_targetid_list_buf) {
7219 dev_err(&pdev->dev,
7220 "Failed to allocate LD targetid list buffer\n");
7221 return -ENOMEM;
7222 }
7223
7224 if (!reset_devices) {
7225 instance->system_info_buf =
7226 dma_alloc_coherent(&pdev->dev,
7227 sizeof(struct MR_DRV_SYSTEM_INFO),
7228 &instance->system_info_h, GFP_KERNEL);
7229 instance->pd_info =
7230 dma_alloc_coherent(&pdev->dev,
7231 sizeof(struct MR_PD_INFO),
7232 &instance->pd_info_h, GFP_KERNEL);
7233 instance->tgt_prop =
7234 dma_alloc_coherent(&pdev->dev,
7235 sizeof(struct MR_TARGET_PROPERTIES),
7236 &instance->tgt_prop_h, GFP_KERNEL);
7237 instance->crash_dump_buf =
7238 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7239 &instance->crash_dump_h, GFP_KERNEL);
7240
7241 if (!instance->system_info_buf)
7242 dev_err(&instance->pdev->dev,
7243 "Failed to allocate system info buffer\n");
7244
7245 if (!instance->pd_info)
7246 dev_err(&instance->pdev->dev,
7247 "Failed to allocate pd_info buffer\n");
7248
7249 if (!instance->tgt_prop)
7250 dev_err(&instance->pdev->dev,
7251 "Failed to allocate tgt_prop buffer\n");
7252
7253 if (!instance->crash_dump_buf)
7254 dev_err(&instance->pdev->dev,
7255 "Failed to allocate crash dump buffer\n");
7256 }
7257
7258 return 0;
7259 }
7260
7261 /*
7262 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated
7263 * during driver load time
7264 *
7265 * @instance- Adapter soft instance
7266 *
7267 */
7268 static inline
megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)7269 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7270 {
7271 struct pci_dev *pdev = instance->pdev;
7272 struct fusion_context *fusion = instance->ctrl_context;
7273
7274 if (instance->evt_detail)
7275 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7276 instance->evt_detail,
7277 instance->evt_detail_h);
7278
7279 if (fusion && fusion->ioc_init_request)
7280 dma_free_coherent(&pdev->dev,
7281 sizeof(struct MPI2_IOC_INIT_REQUEST),
7282 fusion->ioc_init_request,
7283 fusion->ioc_init_request_phys);
7284
7285 if (instance->pd_list_buf)
7286 dma_free_coherent(&pdev->dev,
7287 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7288 instance->pd_list_buf,
7289 instance->pd_list_buf_h);
7290
7291 if (instance->ld_list_buf)
7292 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7293 instance->ld_list_buf,
7294 instance->ld_list_buf_h);
7295
7296 if (instance->ld_targetid_list_buf)
7297 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7298 instance->ld_targetid_list_buf,
7299 instance->ld_targetid_list_buf_h);
7300
7301 if (instance->ctrl_info_buf)
7302 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7303 instance->ctrl_info_buf,
7304 instance->ctrl_info_buf_h);
7305
7306 if (instance->system_info_buf)
7307 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7308 instance->system_info_buf,
7309 instance->system_info_h);
7310
7311 if (instance->pd_info)
7312 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7313 instance->pd_info, instance->pd_info_h);
7314
7315 if (instance->tgt_prop)
7316 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7317 instance->tgt_prop, instance->tgt_prop_h);
7318
7319 if (instance->crash_dump_buf)
7320 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7321 instance->crash_dump_buf,
7322 instance->crash_dump_h);
7323
7324 if (instance->snapdump_prop)
7325 dma_free_coherent(&pdev->dev,
7326 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7327 instance->snapdump_prop,
7328 instance->snapdump_prop_h);
7329
7330 if (instance->host_device_list_buf)
7331 dma_free_coherent(&pdev->dev,
7332 HOST_DEVICE_LIST_SZ,
7333 instance->host_device_list_buf,
7334 instance->host_device_list_buf_h);
7335
7336 }
7337
7338 /*
7339 * megasas_init_ctrl_params - Initialize controller's instance
7340 * parameters before FW init
7341 * @instance - Adapter soft instance
7342 * @return - void
7343 */
megasas_init_ctrl_params(struct megasas_instance *instance)7344 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7345 {
7346 instance->fw_crash_state = UNAVAILABLE;
7347
7348 megasas_poll_wait_aen = 0;
7349 instance->issuepend_done = 1;
7350 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7351
7352 /*
7353 * Initialize locks and queues
7354 */
7355 INIT_LIST_HEAD(&instance->cmd_pool);
7356 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7357
7358 atomic_set(&instance->fw_outstanding, 0);
7359 atomic64_set(&instance->total_io_count, 0);
7360
7361 init_waitqueue_head(&instance->int_cmd_wait_q);
7362 init_waitqueue_head(&instance->abort_cmd_wait_q);
7363
7364 mutex_init(&instance->crashdump_lock);
7365 spin_lock_init(&instance->mfi_pool_lock);
7366 spin_lock_init(&instance->hba_lock);
7367 spin_lock_init(&instance->stream_lock);
7368 spin_lock_init(&instance->completion_lock);
7369
7370 mutex_init(&instance->reset_mutex);
7371
7372 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7373 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7374 instance->flag_ieee = 1;
7375
7376 megasas_dbg_lvl = 0;
7377 instance->flag = 0;
7378 instance->unload = 1;
7379 instance->last_time = 0;
7380 instance->disableOnlineCtrlReset = 1;
7381 instance->UnevenSpanSupport = 0;
7382 instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7383 instance->msix_load_balance = false;
7384
7385 if (instance->adapter_type != MFI_SERIES)
7386 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7387 else
7388 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7389 }
7390
7391 /**
7392 * megasas_probe_one - PCI hotplug entry point
7393 * @pdev: PCI device structure
7394 * @id: PCI ids of supported hotplugged adapter
7395 */
megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)7396 static int megasas_probe_one(struct pci_dev *pdev,
7397 const struct pci_device_id *id)
7398 {
7399 int rval, pos;
7400 struct Scsi_Host *host;
7401 struct megasas_instance *instance;
7402 u16 control = 0;
7403
7404 switch (pdev->device) {
7405 case PCI_DEVICE_ID_LSI_AERO_10E0:
7406 case PCI_DEVICE_ID_LSI_AERO_10E3:
7407 case PCI_DEVICE_ID_LSI_AERO_10E4:
7408 case PCI_DEVICE_ID_LSI_AERO_10E7:
7409 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7410 return 1;
7411 case PCI_DEVICE_ID_LSI_AERO_10E1:
7412 case PCI_DEVICE_ID_LSI_AERO_10E5:
7413 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7414 break;
7415 }
7416
7417 /* Reset MSI-X in the kdump kernel */
7418 if (reset_devices) {
7419 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7420 if (pos) {
7421 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7422 &control);
7423 if (control & PCI_MSIX_FLAGS_ENABLE) {
7424 dev_info(&pdev->dev, "resetting MSI-X\n");
7425 pci_write_config_word(pdev,
7426 pos + PCI_MSIX_FLAGS,
7427 control &
7428 ~PCI_MSIX_FLAGS_ENABLE);
7429 }
7430 }
7431 }
7432
7433 /*
7434 * PCI prepping: enable device set bus mastering and dma mask
7435 */
7436 rval = pci_enable_device_mem(pdev);
7437
7438 if (rval) {
7439 return rval;
7440 }
7441
7442 pci_set_master(pdev);
7443
7444 host = scsi_host_alloc(&megasas_template,
7445 sizeof(struct megasas_instance));
7446
7447 if (!host) {
7448 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7449 goto fail_alloc_instance;
7450 }
7451
7452 instance = (struct megasas_instance *)host->hostdata;
7453 memset(instance, 0, sizeof(*instance));
7454 atomic_set(&instance->fw_reset_no_pci_access, 0);
7455
7456 /*
7457 * Initialize PCI related and misc parameters
7458 */
7459 instance->pdev = pdev;
7460 instance->host = host;
7461 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
7462 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7463
7464 megasas_set_adapter_type(instance);
7465
7466 /*
7467 * Initialize MFI Firmware
7468 */
7469 if (megasas_init_fw(instance))
7470 goto fail_init_mfi;
7471
7472 if (instance->requestorId) {
7473 if (instance->PlasmaFW111) {
7474 instance->vf_affiliation_111 =
7475 dma_alloc_coherent(&pdev->dev,
7476 sizeof(struct MR_LD_VF_AFFILIATION_111),
7477 &instance->vf_affiliation_111_h,
7478 GFP_KERNEL);
7479 if (!instance->vf_affiliation_111)
7480 dev_warn(&pdev->dev, "Can't allocate "
7481 "memory for VF affiliation buffer\n");
7482 } else {
7483 instance->vf_affiliation =
7484 dma_alloc_coherent(&pdev->dev,
7485 (MAX_LOGICAL_DRIVES + 1) *
7486 sizeof(struct MR_LD_VF_AFFILIATION),
7487 &instance->vf_affiliation_h,
7488 GFP_KERNEL);
7489 if (!instance->vf_affiliation)
7490 dev_warn(&pdev->dev, "Can't allocate "
7491 "memory for VF affiliation buffer\n");
7492 }
7493 }
7494
7495 /*
7496 * Store instance in PCI softstate
7497 */
7498 pci_set_drvdata(pdev, instance);
7499
7500 /*
7501 * Add this controller to megasas_mgmt_info structure so that it
7502 * can be exported to management applications
7503 */
7504 megasas_mgmt_info.count++;
7505 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7506 megasas_mgmt_info.max_index++;
7507
7508 /*
7509 * Register with SCSI mid-layer
7510 */
7511 if (megasas_io_attach(instance))
7512 goto fail_io_attach;
7513
7514 instance->unload = 0;
7515 /*
7516 * Trigger SCSI to scan our drives
7517 */
7518 if (!instance->enable_fw_dev_list ||
7519 (instance->host_device_list_buf->count > 0))
7520 scsi_scan_host(host);
7521
7522 /*
7523 * Initiate AEN (Asynchronous Event Notification)
7524 */
7525 if (megasas_start_aen(instance)) {
7526 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7527 goto fail_start_aen;
7528 }
7529
7530 megasas_setup_debugfs(instance);
7531
7532 /* Get current SR-IOV LD/VF affiliation */
7533 if (instance->requestorId)
7534 megasas_get_ld_vf_affiliation(instance, 1);
7535
7536 return 0;
7537
7538 fail_start_aen:
7539 instance->unload = 1;
7540 scsi_remove_host(instance->host);
7541 fail_io_attach:
7542 megasas_mgmt_info.count--;
7543 megasas_mgmt_info.max_index--;
7544 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7545
7546 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7547 del_timer_sync(&instance->sriov_heartbeat_timer);
7548
7549 instance->instancet->disable_intr(instance);
7550 megasas_destroy_irqs(instance);
7551
7552 if (instance->adapter_type != MFI_SERIES)
7553 megasas_release_fusion(instance);
7554 else
7555 megasas_release_mfi(instance);
7556
7557 if (instance->msix_vectors)
7558 pci_free_irq_vectors(instance->pdev);
7559 instance->msix_vectors = 0;
7560
7561 if (instance->fw_crash_state != UNAVAILABLE)
7562 megasas_free_host_crash_buffer(instance);
7563
7564 if (instance->adapter_type != MFI_SERIES)
7565 megasas_fusion_stop_watchdog(instance);
7566 fail_init_mfi:
7567 scsi_host_put(host);
7568 fail_alloc_instance:
7569 pci_disable_device(pdev);
7570
7571 return -ENODEV;
7572 }
7573
7574 /**
7575 * megasas_flush_cache - Requests FW to flush all its caches
7576 * @instance: Adapter soft state
7577 */
megasas_flush_cache(struct megasas_instance *instance)7578 static void megasas_flush_cache(struct megasas_instance *instance)
7579 {
7580 struct megasas_cmd *cmd;
7581 struct megasas_dcmd_frame *dcmd;
7582
7583 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7584 return;
7585
7586 cmd = megasas_get_cmd(instance);
7587
7588 if (!cmd)
7589 return;
7590
7591 dcmd = &cmd->frame->dcmd;
7592
7593 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7594
7595 dcmd->cmd = MFI_CMD_DCMD;
7596 dcmd->cmd_status = 0x0;
7597 dcmd->sge_count = 0;
7598 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7599 dcmd->timeout = 0;
7600 dcmd->pad_0 = 0;
7601 dcmd->data_xfer_len = 0;
7602 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7603 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7604
7605 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7606 != DCMD_SUCCESS) {
7607 dev_err(&instance->pdev->dev,
7608 "return from %s %d\n", __func__, __LINE__);
7609 return;
7610 }
7611
7612 megasas_return_cmd(instance, cmd);
7613 }
7614
7615 /**
7616 * megasas_shutdown_controller - Instructs FW to shutdown the controller
7617 * @instance: Adapter soft state
7618 * @opcode: Shutdown/Hibernate
7619 */
megasas_shutdown_controller(struct megasas_instance *instance, u32 opcode)7620 static void megasas_shutdown_controller(struct megasas_instance *instance,
7621 u32 opcode)
7622 {
7623 struct megasas_cmd *cmd;
7624 struct megasas_dcmd_frame *dcmd;
7625
7626 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7627 return;
7628
7629 cmd = megasas_get_cmd(instance);
7630
7631 if (!cmd)
7632 return;
7633
7634 if (instance->aen_cmd)
7635 megasas_issue_blocked_abort_cmd(instance,
7636 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7637 if (instance->map_update_cmd)
7638 megasas_issue_blocked_abort_cmd(instance,
7639 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7640 if (instance->jbod_seq_cmd)
7641 megasas_issue_blocked_abort_cmd(instance,
7642 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7643
7644 dcmd = &cmd->frame->dcmd;
7645
7646 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7647
7648 dcmd->cmd = MFI_CMD_DCMD;
7649 dcmd->cmd_status = 0x0;
7650 dcmd->sge_count = 0;
7651 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7652 dcmd->timeout = 0;
7653 dcmd->pad_0 = 0;
7654 dcmd->data_xfer_len = 0;
7655 dcmd->opcode = cpu_to_le32(opcode);
7656
7657 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7658 != DCMD_SUCCESS) {
7659 dev_err(&instance->pdev->dev,
7660 "return from %s %d\n", __func__, __LINE__);
7661 return;
7662 }
7663
7664 megasas_return_cmd(instance, cmd);
7665 }
7666
7667 #ifdef CONFIG_PM
7668 /**
7669 * megasas_suspend - driver suspend entry point
7670 * @pdev: PCI device structure
7671 * @state: PCI power state to suspend routine
7672 */
7673 static int
megasas_suspend(struct pci_dev *pdev, pm_message_t state)7674 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
7675 {
7676 struct megasas_instance *instance;
7677
7678 instance = pci_get_drvdata(pdev);
7679
7680 if (!instance)
7681 return 0;
7682
7683 instance->unload = 1;
7684
7685 dev_info(&pdev->dev, "%s is called\n", __func__);
7686
7687 /* Shutdown SR-IOV heartbeat timer */
7688 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7689 del_timer_sync(&instance->sriov_heartbeat_timer);
7690
7691 /* Stop the FW fault detection watchdog */
7692 if (instance->adapter_type != MFI_SERIES)
7693 megasas_fusion_stop_watchdog(instance);
7694
7695 megasas_flush_cache(instance);
7696 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7697
7698 /* cancel the delayed work if this work still in queue */
7699 if (instance->ev != NULL) {
7700 struct megasas_aen_event *ev = instance->ev;
7701 cancel_delayed_work_sync(&ev->hotplug_work);
7702 instance->ev = NULL;
7703 }
7704
7705 tasklet_kill(&instance->isr_tasklet);
7706
7707 pci_set_drvdata(instance->pdev, instance);
7708 instance->instancet->disable_intr(instance);
7709
7710 megasas_destroy_irqs(instance);
7711
7712 if (instance->msix_vectors)
7713 pci_free_irq_vectors(instance->pdev);
7714
7715 pci_save_state(pdev);
7716 pci_disable_device(pdev);
7717
7718 pci_set_power_state(pdev, pci_choose_state(pdev, state));
7719
7720 return 0;
7721 }
7722
7723 /**
7724 * megasas_resume- driver resume entry point
7725 * @pdev: PCI device structure
7726 */
7727 static int
megasas_resume(struct pci_dev *pdev)7728 megasas_resume(struct pci_dev *pdev)
7729 {
7730 int rval;
7731 struct Scsi_Host *host;
7732 struct megasas_instance *instance;
7733 u32 status_reg;
7734
7735 instance = pci_get_drvdata(pdev);
7736
7737 if (!instance)
7738 return 0;
7739
7740 host = instance->host;
7741 pci_set_power_state(pdev, PCI_D0);
7742 pci_enable_wake(pdev, PCI_D0, 0);
7743 pci_restore_state(pdev);
7744
7745 dev_info(&pdev->dev, "%s is called\n", __func__);
7746 /*
7747 * PCI prepping: enable device set bus mastering and dma mask
7748 */
7749 rval = pci_enable_device_mem(pdev);
7750
7751 if (rval) {
7752 dev_err(&pdev->dev, "Enable device failed\n");
7753 return rval;
7754 }
7755
7756 pci_set_master(pdev);
7757
7758 /*
7759 * We expect the FW state to be READY
7760 */
7761
7762 if (megasas_transition_to_ready(instance, 0)) {
7763 dev_info(&instance->pdev->dev,
7764 "Failed to transition controller to ready from %s!\n",
7765 __func__);
7766 if (instance->adapter_type != MFI_SERIES) {
7767 status_reg =
7768 instance->instancet->read_fw_status_reg(instance);
7769 if (!(status_reg & MFI_RESET_ADAPTER) ||
7770 ((megasas_adp_reset_wait_for_ready
7771 (instance, true, 0)) == FAILED))
7772 goto fail_ready_state;
7773 } else {
7774 atomic_set(&instance->fw_reset_no_pci_access, 1);
7775 instance->instancet->adp_reset
7776 (instance, instance->reg_set);
7777 atomic_set(&instance->fw_reset_no_pci_access, 0);
7778
7779 /* waiting for about 30 seconds before retry */
7780 ssleep(30);
7781
7782 if (megasas_transition_to_ready(instance, 0))
7783 goto fail_ready_state;
7784 }
7785
7786 dev_info(&instance->pdev->dev,
7787 "FW restarted successfully from %s!\n",
7788 __func__);
7789 }
7790 if (megasas_set_dma_mask(instance))
7791 goto fail_set_dma_mask;
7792
7793 /*
7794 * Initialize MFI Firmware
7795 */
7796
7797 atomic_set(&instance->fw_outstanding, 0);
7798 atomic_set(&instance->ldio_outstanding, 0);
7799
7800 /* Now re-enable MSI-X */
7801 if (instance->msix_vectors)
7802 megasas_alloc_irq_vectors(instance);
7803
7804 if (!instance->msix_vectors) {
7805 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7806 PCI_IRQ_LEGACY);
7807 if (rval < 0)
7808 goto fail_reenable_msix;
7809 }
7810
7811 megasas_setup_reply_map(instance);
7812
7813 if (instance->adapter_type != MFI_SERIES) {
7814 megasas_reset_reply_desc(instance);
7815 if (megasas_ioc_init_fusion(instance)) {
7816 megasas_free_cmds(instance);
7817 megasas_free_cmds_fusion(instance);
7818 goto fail_init_mfi;
7819 }
7820 if (!megasas_get_map_info(instance))
7821 megasas_sync_map_info(instance);
7822 } else {
7823 *instance->producer = 0;
7824 *instance->consumer = 0;
7825 if (megasas_issue_init_mfi(instance))
7826 goto fail_init_mfi;
7827 }
7828
7829 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7830 goto fail_init_mfi;
7831
7832 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7833 (unsigned long)instance);
7834
7835 if (instance->msix_vectors ?
7836 megasas_setup_irqs_msix(instance, 0) :
7837 megasas_setup_irqs_ioapic(instance))
7838 goto fail_init_mfi;
7839
7840 if (instance->adapter_type != MFI_SERIES)
7841 megasas_setup_irq_poll(instance);
7842
7843 /* Re-launch SR-IOV heartbeat timer */
7844 if (instance->requestorId) {
7845 if (!megasas_sriov_start_heartbeat(instance, 0))
7846 megasas_start_timer(instance);
7847 else {
7848 instance->skip_heartbeat_timer_del = 1;
7849 goto fail_init_mfi;
7850 }
7851 }
7852
7853 instance->instancet->enable_intr(instance);
7854 megasas_setup_jbod_map(instance);
7855 instance->unload = 0;
7856
7857 /*
7858 * Initiate AEN (Asynchronous Event Notification)
7859 */
7860 if (megasas_start_aen(instance))
7861 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7862
7863 /* Re-launch FW fault watchdog */
7864 if (instance->adapter_type != MFI_SERIES)
7865 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7866 goto fail_start_watchdog;
7867
7868 return 0;
7869
7870 fail_start_watchdog:
7871 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7872 del_timer_sync(&instance->sriov_heartbeat_timer);
7873 fail_init_mfi:
7874 megasas_free_ctrl_dma_buffers(instance);
7875 megasas_free_ctrl_mem(instance);
7876 scsi_host_put(host);
7877
7878 fail_reenable_msix:
7879 fail_set_dma_mask:
7880 fail_ready_state:
7881
7882 pci_disable_device(pdev);
7883
7884 return -ENODEV;
7885 }
7886 #else
7887 #define megasas_suspend NULL
7888 #define megasas_resume NULL
7889 #endif
7890
7891 static inline int
megasas_wait_for_adapter_operational(struct megasas_instance *instance)7892 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7893 {
7894 int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7895 int i;
7896 u8 adp_state;
7897
7898 for (i = 0; i < wait_time; i++) {
7899 adp_state = atomic_read(&instance->adprecovery);
7900 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7901 (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7902 break;
7903
7904 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7905 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7906
7907 msleep(1000);
7908 }
7909
7910 if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7911 dev_info(&instance->pdev->dev,
7912 "%s HBA failed to become operational, adp_state %d\n",
7913 __func__, adp_state);
7914 return 1;
7915 }
7916
7917 return 0;
7918 }
7919
7920 /**
7921 * megasas_detach_one - PCI hot"un"plug entry point
7922 * @pdev: PCI device structure
7923 */
megasas_detach_one(struct pci_dev *pdev)7924 static void megasas_detach_one(struct pci_dev *pdev)
7925 {
7926 int i;
7927 struct Scsi_Host *host;
7928 struct megasas_instance *instance;
7929 struct fusion_context *fusion;
7930 u32 pd_seq_map_sz;
7931
7932 instance = pci_get_drvdata(pdev);
7933
7934 if (!instance)
7935 return;
7936
7937 host = instance->host;
7938 fusion = instance->ctrl_context;
7939
7940 /* Shutdown SR-IOV heartbeat timer */
7941 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7942 del_timer_sync(&instance->sriov_heartbeat_timer);
7943
7944 /* Stop the FW fault detection watchdog */
7945 if (instance->adapter_type != MFI_SERIES)
7946 megasas_fusion_stop_watchdog(instance);
7947
7948 if (instance->fw_crash_state != UNAVAILABLE)
7949 megasas_free_host_crash_buffer(instance);
7950 scsi_remove_host(instance->host);
7951 instance->unload = 1;
7952
7953 if (megasas_wait_for_adapter_operational(instance))
7954 goto skip_firing_dcmds;
7955
7956 megasas_flush_cache(instance);
7957 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7958
7959 skip_firing_dcmds:
7960 /* cancel the delayed work if this work still in queue*/
7961 if (instance->ev != NULL) {
7962 struct megasas_aen_event *ev = instance->ev;
7963 cancel_delayed_work_sync(&ev->hotplug_work);
7964 instance->ev = NULL;
7965 }
7966
7967 /* cancel all wait events */
7968 wake_up_all(&instance->int_cmd_wait_q);
7969
7970 tasklet_kill(&instance->isr_tasklet);
7971
7972 /*
7973 * Take the instance off the instance array. Note that we will not
7974 * decrement the max_index. We let this array be sparse array
7975 */
7976 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7977 if (megasas_mgmt_info.instance[i] == instance) {
7978 megasas_mgmt_info.count--;
7979 megasas_mgmt_info.instance[i] = NULL;
7980
7981 break;
7982 }
7983 }
7984
7985 instance->instancet->disable_intr(instance);
7986
7987 megasas_destroy_irqs(instance);
7988
7989 if (instance->msix_vectors)
7990 pci_free_irq_vectors(instance->pdev);
7991
7992 if (instance->adapter_type >= VENTURA_SERIES) {
7993 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
7994 kfree(fusion->stream_detect_by_ld[i]);
7995 kfree(fusion->stream_detect_by_ld);
7996 fusion->stream_detect_by_ld = NULL;
7997 }
7998
7999
8000 if (instance->adapter_type != MFI_SERIES) {
8001 megasas_release_fusion(instance);
8002 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
8003 (sizeof(struct MR_PD_CFG_SEQ) *
8004 (MAX_PHYSICAL_DEVICES - 1));
8005 for (i = 0; i < 2 ; i++) {
8006 if (fusion->ld_map[i])
8007 dma_free_coherent(&instance->pdev->dev,
8008 fusion->max_map_sz,
8009 fusion->ld_map[i],
8010 fusion->ld_map_phys[i]);
8011 if (fusion->ld_drv_map[i]) {
8012 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
8013 vfree(fusion->ld_drv_map[i]);
8014 else
8015 free_pages((ulong)fusion->ld_drv_map[i],
8016 fusion->drv_map_pages);
8017 }
8018
8019 if (fusion->pd_seq_sync[i])
8020 dma_free_coherent(&instance->pdev->dev,
8021 pd_seq_map_sz,
8022 fusion->pd_seq_sync[i],
8023 fusion->pd_seq_phys[i]);
8024 }
8025 } else {
8026 megasas_release_mfi(instance);
8027 }
8028
8029 if (instance->vf_affiliation)
8030 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
8031 sizeof(struct MR_LD_VF_AFFILIATION),
8032 instance->vf_affiliation,
8033 instance->vf_affiliation_h);
8034
8035 if (instance->vf_affiliation_111)
8036 dma_free_coherent(&pdev->dev,
8037 sizeof(struct MR_LD_VF_AFFILIATION_111),
8038 instance->vf_affiliation_111,
8039 instance->vf_affiliation_111_h);
8040
8041 if (instance->hb_host_mem)
8042 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
8043 instance->hb_host_mem,
8044 instance->hb_host_mem_h);
8045
8046 megasas_free_ctrl_dma_buffers(instance);
8047
8048 megasas_free_ctrl_mem(instance);
8049
8050 megasas_destroy_debugfs(instance);
8051
8052 scsi_host_put(host);
8053
8054 pci_disable_device(pdev);
8055 }
8056
8057 /**
8058 * megasas_shutdown - Shutdown entry point
8059 * @pdev: Generic device structure
8060 */
megasas_shutdown(struct pci_dev *pdev)8061 static void megasas_shutdown(struct pci_dev *pdev)
8062 {
8063 struct megasas_instance *instance = pci_get_drvdata(pdev);
8064
8065 if (!instance)
8066 return;
8067
8068 instance->unload = 1;
8069
8070 if (megasas_wait_for_adapter_operational(instance))
8071 goto skip_firing_dcmds;
8072
8073 megasas_flush_cache(instance);
8074 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8075
8076 skip_firing_dcmds:
8077 instance->instancet->disable_intr(instance);
8078 megasas_destroy_irqs(instance);
8079
8080 if (instance->msix_vectors)
8081 pci_free_irq_vectors(instance->pdev);
8082 }
8083
8084 /*
8085 * megasas_mgmt_open - char node "open" entry point
8086 * @inode: char node inode
8087 * @filep: char node file
8088 */
megasas_mgmt_open(struct inode *inode, struct file *filep)8089 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
8090 {
8091 /*
8092 * Allow only those users with admin rights
8093 */
8094 if (!capable(CAP_SYS_ADMIN))
8095 return -EACCES;
8096
8097 return 0;
8098 }
8099
8100 /*
8101 * megasas_mgmt_fasync - Async notifier registration from applications
8102 * @fd: char node file descriptor number
8103 * @filep: char node file
8104 * @mode: notifier on/off
8105 *
8106 * This function adds the calling process to a driver global queue. When an
8107 * event occurs, SIGIO will be sent to all processes in this queue.
8108 */
megasas_mgmt_fasync(int fd, struct file *filep, int mode)8109 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
8110 {
8111 int rc;
8112
8113 mutex_lock(&megasas_async_queue_mutex);
8114
8115 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
8116
8117 mutex_unlock(&megasas_async_queue_mutex);
8118
8119 if (rc >= 0) {
8120 /* For sanity check when we get ioctl */
8121 filep->private_data = filep;
8122 return 0;
8123 }
8124
8125 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
8126
8127 return rc;
8128 }
8129
8130 /*
8131 * megasas_mgmt_poll - char node "poll" entry point
8132 * @filep: char node file
8133 * @wait: Events to poll for
8134 */
megasas_mgmt_poll(struct file *file, poll_table *wait)8135 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8136 {
8137 __poll_t mask;
8138 unsigned long flags;
8139
8140 poll_wait(file, &megasas_poll_wait, wait);
8141 spin_lock_irqsave(&poll_aen_lock, flags);
8142 if (megasas_poll_wait_aen)
8143 mask = (EPOLLIN | EPOLLRDNORM);
8144 else
8145 mask = 0;
8146 megasas_poll_wait_aen = 0;
8147 spin_unlock_irqrestore(&poll_aen_lock, flags);
8148 return mask;
8149 }
8150
8151 /*
8152 * megasas_set_crash_dump_params_ioctl:
8153 * Send CRASH_DUMP_MODE DCMD to all controllers
8154 * @cmd: MFI command frame
8155 */
8156
megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)8157 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8158 {
8159 struct megasas_instance *local_instance;
8160 int i, error = 0;
8161 int crash_support;
8162
8163 crash_support = cmd->frame->dcmd.mbox.w[0];
8164
8165 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8166 local_instance = megasas_mgmt_info.instance[i];
8167 if (local_instance && local_instance->crash_dump_drv_support) {
8168 if ((atomic_read(&local_instance->adprecovery) ==
8169 MEGASAS_HBA_OPERATIONAL) &&
8170 !megasas_set_crash_dump_params(local_instance,
8171 crash_support)) {
8172 local_instance->crash_dump_app_support =
8173 crash_support;
8174 dev_info(&local_instance->pdev->dev,
8175 "Application firmware crash "
8176 "dump mode set success\n");
8177 error = 0;
8178 } else {
8179 dev_info(&local_instance->pdev->dev,
8180 "Application firmware crash "
8181 "dump mode set failed\n");
8182 error = -1;
8183 }
8184 }
8185 }
8186 return error;
8187 }
8188
8189 /**
8190 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
8191 * @instance: Adapter soft state
8192 * @user_ioc: User's ioctl packet
8193 * @ioc: ioctl packet
8194 */
8195 static int
megasas_mgmt_fw_ioctl(struct megasas_instance *instance, struct megasas_iocpacket __user * user_ioc, struct megasas_iocpacket *ioc)8196 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8197 struct megasas_iocpacket __user * user_ioc,
8198 struct megasas_iocpacket *ioc)
8199 {
8200 struct megasas_sge64 *kern_sge64 = NULL;
8201 struct megasas_sge32 *kern_sge32 = NULL;
8202 struct megasas_cmd *cmd;
8203 void *kbuff_arr[MAX_IOCTL_SGE];
8204 dma_addr_t buf_handle = 0;
8205 int error = 0, i;
8206 void *sense = NULL;
8207 dma_addr_t sense_handle;
8208 void *sense_ptr;
8209 u32 opcode = 0;
8210 int ret = DCMD_SUCCESS;
8211
8212 memset(kbuff_arr, 0, sizeof(kbuff_arr));
8213
8214 if (ioc->sge_count > MAX_IOCTL_SGE) {
8215 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
8216 ioc->sge_count, MAX_IOCTL_SGE);
8217 return -EINVAL;
8218 }
8219
8220 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8221 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8222 !instance->support_nvme_passthru) ||
8223 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8224 !instance->support_pci_lane_margining)) {
8225 dev_err(&instance->pdev->dev,
8226 "Received invalid ioctl command 0x%x\n",
8227 ioc->frame.hdr.cmd);
8228 return -ENOTSUPP;
8229 }
8230
8231 cmd = megasas_get_cmd(instance);
8232 if (!cmd) {
8233 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8234 return -ENOMEM;
8235 }
8236
8237 /*
8238 * User's IOCTL packet has 2 frames (maximum). Copy those two
8239 * frames into our cmd's frames. cmd->frame's context will get
8240 * overwritten when we copy from user's frames. So set that value
8241 * alone separately
8242 */
8243 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8244 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8245 cmd->frame->hdr.pad_0 = 0;
8246
8247 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8248
8249 if (instance->consistent_mask_64bit)
8250 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8251 MFI_FRAME_SENSE64));
8252 else
8253 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8254 MFI_FRAME_SENSE64));
8255
8256 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8257 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8258
8259 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8260 mutex_lock(&instance->reset_mutex);
8261 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8262 megasas_return_cmd(instance, cmd);
8263 mutex_unlock(&instance->reset_mutex);
8264 return -1;
8265 }
8266 mutex_unlock(&instance->reset_mutex);
8267 }
8268
8269 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8270 error = megasas_set_crash_dump_params_ioctl(cmd);
8271 megasas_return_cmd(instance, cmd);
8272 return error;
8273 }
8274
8275 /*
8276 * The management interface between applications and the fw uses
8277 * MFI frames. E.g, RAID configuration changes, LD property changes
8278 * etc are accomplishes through different kinds of MFI frames. The
8279 * driver needs to care only about substituting user buffers with
8280 * kernel buffers in SGLs. The location of SGL is embedded in the
8281 * struct iocpacket itself.
8282 */
8283 if (instance->consistent_mask_64bit)
8284 kern_sge64 = (struct megasas_sge64 *)
8285 ((unsigned long)cmd->frame + ioc->sgl_off);
8286 else
8287 kern_sge32 = (struct megasas_sge32 *)
8288 ((unsigned long)cmd->frame + ioc->sgl_off);
8289
8290 /*
8291 * For each user buffer, create a mirror buffer and copy in
8292 */
8293 for (i = 0; i < ioc->sge_count; i++) {
8294 if (!ioc->sgl[i].iov_len)
8295 continue;
8296
8297 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8298 ioc->sgl[i].iov_len,
8299 &buf_handle, GFP_KERNEL);
8300 if (!kbuff_arr[i]) {
8301 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8302 "kernel SGL buffer for IOCTL\n");
8303 error = -ENOMEM;
8304 goto out;
8305 }
8306
8307 /*
8308 * We don't change the dma_coherent_mask, so
8309 * dma_alloc_coherent only returns 32bit addresses
8310 */
8311 if (instance->consistent_mask_64bit) {
8312 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8313 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8314 } else {
8315 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8316 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8317 }
8318
8319 /*
8320 * We created a kernel buffer corresponding to the
8321 * user buffer. Now copy in from the user buffer
8322 */
8323 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8324 (u32) (ioc->sgl[i].iov_len))) {
8325 error = -EFAULT;
8326 goto out;
8327 }
8328 }
8329
8330 if (ioc->sense_len) {
8331 /* make sure the pointer is part of the frame */
8332 if (ioc->sense_off >
8333 (sizeof(union megasas_frame) - sizeof(__le64))) {
8334 error = -EINVAL;
8335 goto out;
8336 }
8337
8338 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8339 &sense_handle, GFP_KERNEL);
8340 if (!sense) {
8341 error = -ENOMEM;
8342 goto out;
8343 }
8344
8345 /* always store 64 bits regardless of addressing */
8346 sense_ptr = (void *)cmd->frame + ioc->sense_off;
8347 put_unaligned_le64(sense_handle, sense_ptr);
8348 }
8349
8350 /*
8351 * Set the sync_cmd flag so that the ISR knows not to complete this
8352 * cmd to the SCSI mid-layer
8353 */
8354 cmd->sync_cmd = 1;
8355
8356 ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8357 switch (ret) {
8358 case DCMD_INIT:
8359 case DCMD_BUSY:
8360 cmd->sync_cmd = 0;
8361 dev_err(&instance->pdev->dev,
8362 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8363 __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8364 cmd->cmd_status_drv);
8365 error = -EBUSY;
8366 goto out;
8367 }
8368
8369 cmd->sync_cmd = 0;
8370
8371 if (instance->unload == 1) {
8372 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8373 "don't submit data to application\n");
8374 goto out;
8375 }
8376 /*
8377 * copy out the kernel buffers to user buffers
8378 */
8379 for (i = 0; i < ioc->sge_count; i++) {
8380 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8381 ioc->sgl[i].iov_len)) {
8382 error = -EFAULT;
8383 goto out;
8384 }
8385 }
8386
8387 /*
8388 * copy out the sense
8389 */
8390 if (ioc->sense_len) {
8391 /*
8392 * sense_ptr points to the location that has the user
8393 * sense buffer address
8394 */
8395 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
8396 ioc->sense_off);
8397
8398 if (copy_to_user((void __user *)((unsigned long)
8399 get_unaligned((unsigned long *)sense_ptr)),
8400 sense, ioc->sense_len)) {
8401 dev_err(&instance->pdev->dev, "Failed to copy out to user "
8402 "sense data\n");
8403 error = -EFAULT;
8404 goto out;
8405 }
8406 }
8407
8408 /*
8409 * copy the status codes returned by the fw
8410 */
8411 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8412 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8413 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8414 error = -EFAULT;
8415 }
8416
8417 out:
8418 if (sense) {
8419 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8420 sense, sense_handle);
8421 }
8422
8423 for (i = 0; i < ioc->sge_count; i++) {
8424 if (kbuff_arr[i]) {
8425 if (instance->consistent_mask_64bit)
8426 dma_free_coherent(&instance->pdev->dev,
8427 le32_to_cpu(kern_sge64[i].length),
8428 kbuff_arr[i],
8429 le64_to_cpu(kern_sge64[i].phys_addr));
8430 else
8431 dma_free_coherent(&instance->pdev->dev,
8432 le32_to_cpu(kern_sge32[i].length),
8433 kbuff_arr[i],
8434 le32_to_cpu(kern_sge32[i].phys_addr));
8435 kbuff_arr[i] = NULL;
8436 }
8437 }
8438
8439 megasas_return_cmd(instance, cmd);
8440 return error;
8441 }
8442
megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)8443 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8444 {
8445 struct megasas_iocpacket __user *user_ioc =
8446 (struct megasas_iocpacket __user *)arg;
8447 struct megasas_iocpacket *ioc;
8448 struct megasas_instance *instance;
8449 int error;
8450
8451 ioc = memdup_user(user_ioc, sizeof(*ioc));
8452 if (IS_ERR(ioc))
8453 return PTR_ERR(ioc);
8454
8455 instance = megasas_lookup_instance(ioc->host_no);
8456 if (!instance) {
8457 error = -ENODEV;
8458 goto out_kfree_ioc;
8459 }
8460
8461 /* Block ioctls in VF mode */
8462 if (instance->requestorId && !allow_vf_ioctls) {
8463 error = -ENODEV;
8464 goto out_kfree_ioc;
8465 }
8466
8467 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8468 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8469 error = -ENODEV;
8470 goto out_kfree_ioc;
8471 }
8472
8473 if (instance->unload == 1) {
8474 error = -ENODEV;
8475 goto out_kfree_ioc;
8476 }
8477
8478 if (down_interruptible(&instance->ioctl_sem)) {
8479 error = -ERESTARTSYS;
8480 goto out_kfree_ioc;
8481 }
8482
8483 if (megasas_wait_for_adapter_operational(instance)) {
8484 error = -ENODEV;
8485 goto out_up;
8486 }
8487
8488 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8489 out_up:
8490 up(&instance->ioctl_sem);
8491
8492 out_kfree_ioc:
8493 kfree(ioc);
8494 return error;
8495 }
8496
megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)8497 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8498 {
8499 struct megasas_instance *instance;
8500 struct megasas_aen aen;
8501 int error;
8502
8503 if (file->private_data != file) {
8504 printk(KERN_DEBUG "megasas: fasync_helper was not "
8505 "called first\n");
8506 return -EINVAL;
8507 }
8508
8509 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8510 return -EFAULT;
8511
8512 instance = megasas_lookup_instance(aen.host_no);
8513
8514 if (!instance)
8515 return -ENODEV;
8516
8517 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8518 return -ENODEV;
8519 }
8520
8521 if (instance->unload == 1) {
8522 return -ENODEV;
8523 }
8524
8525 if (megasas_wait_for_adapter_operational(instance))
8526 return -ENODEV;
8527
8528 mutex_lock(&instance->reset_mutex);
8529 error = megasas_register_aen(instance, aen.seq_num,
8530 aen.class_locale_word);
8531 mutex_unlock(&instance->reset_mutex);
8532 return error;
8533 }
8534
8535 /**
8536 * megasas_mgmt_ioctl - char node ioctl entry point
8537 * @file: char device file pointer
8538 * @cmd: ioctl command
8539 * @arg: ioctl command arguments address
8540 */
8541 static long
megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)8542 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8543 {
8544 switch (cmd) {
8545 case MEGASAS_IOC_FIRMWARE:
8546 return megasas_mgmt_ioctl_fw(file, arg);
8547
8548 case MEGASAS_IOC_GET_AEN:
8549 return megasas_mgmt_ioctl_aen(file, arg);
8550 }
8551
8552 return -ENOTTY;
8553 }
8554
8555 #ifdef CONFIG_COMPAT
megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)8556 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
8557 {
8558 struct compat_megasas_iocpacket __user *cioc =
8559 (struct compat_megasas_iocpacket __user *)arg;
8560 struct megasas_iocpacket __user *ioc =
8561 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
8562 int i;
8563 int error = 0;
8564 compat_uptr_t ptr;
8565 u32 local_sense_off;
8566 u32 local_sense_len;
8567 u32 user_sense_off;
8568
8569 if (clear_user(ioc, sizeof(*ioc)))
8570 return -EFAULT;
8571
8572 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
8573 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
8574 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
8575 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
8576 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
8577 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
8578 return -EFAULT;
8579
8580 /*
8581 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
8582 * sense_len is not null, so prepare the 64bit value under
8583 * the same condition.
8584 */
8585 if (get_user(local_sense_off, &ioc->sense_off) ||
8586 get_user(local_sense_len, &ioc->sense_len) ||
8587 get_user(user_sense_off, &cioc->sense_off))
8588 return -EFAULT;
8589
8590 if (local_sense_off != user_sense_off)
8591 return -EINVAL;
8592
8593 if (local_sense_len) {
8594 void __user **sense_ioc_ptr =
8595 (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off);
8596 compat_uptr_t *sense_cioc_ptr =
8597 (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off);
8598 if (get_user(ptr, sense_cioc_ptr) ||
8599 put_user(compat_ptr(ptr), sense_ioc_ptr))
8600 return -EFAULT;
8601 }
8602
8603 for (i = 0; i < MAX_IOCTL_SGE; i++) {
8604 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
8605 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
8606 copy_in_user(&ioc->sgl[i].iov_len,
8607 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
8608 return -EFAULT;
8609 }
8610
8611 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
8612
8613 if (copy_in_user(&cioc->frame.hdr.cmd_status,
8614 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
8615 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
8616 return -EFAULT;
8617 }
8618 return error;
8619 }
8620
8621 static long
megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)8622 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8623 unsigned long arg)
8624 {
8625 switch (cmd) {
8626 case MEGASAS_IOC_FIRMWARE32:
8627 return megasas_mgmt_compat_ioctl_fw(file, arg);
8628 case MEGASAS_IOC_GET_AEN:
8629 return megasas_mgmt_ioctl_aen(file, arg);
8630 }
8631
8632 return -ENOTTY;
8633 }
8634 #endif
8635
8636 /*
8637 * File operations structure for management interface
8638 */
8639 static const struct file_operations megasas_mgmt_fops = {
8640 .owner = THIS_MODULE,
8641 .open = megasas_mgmt_open,
8642 .fasync = megasas_mgmt_fasync,
8643 .unlocked_ioctl = megasas_mgmt_ioctl,
8644 .poll = megasas_mgmt_poll,
8645 #ifdef CONFIG_COMPAT
8646 .compat_ioctl = megasas_mgmt_compat_ioctl,
8647 #endif
8648 .llseek = noop_llseek,
8649 };
8650
8651 /*
8652 * PCI hotplug support registration structure
8653 */
8654 static struct pci_driver megasas_pci_driver = {
8655
8656 .name = "megaraid_sas",
8657 .id_table = megasas_pci_table,
8658 .probe = megasas_probe_one,
8659 .remove = megasas_detach_one,
8660 .suspend = megasas_suspend,
8661 .resume = megasas_resume,
8662 .shutdown = megasas_shutdown,
8663 };
8664
8665 /*
8666 * Sysfs driver attributes
8667 */
version_show(struct device_driver *dd, char *buf)8668 static ssize_t version_show(struct device_driver *dd, char *buf)
8669 {
8670 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8671 MEGASAS_VERSION);
8672 }
8673 static DRIVER_ATTR_RO(version);
8674
release_date_show(struct device_driver *dd, char *buf)8675 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8676 {
8677 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8678 MEGASAS_RELDATE);
8679 }
8680 static DRIVER_ATTR_RO(release_date);
8681
support_poll_for_event_show(struct device_driver *dd, char *buf)8682 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8683 {
8684 return sprintf(buf, "%u\n", support_poll_for_event);
8685 }
8686 static DRIVER_ATTR_RO(support_poll_for_event);
8687
support_device_change_show(struct device_driver *dd, char *buf)8688 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8689 {
8690 return sprintf(buf, "%u\n", support_device_change);
8691 }
8692 static DRIVER_ATTR_RO(support_device_change);
8693
dbg_lvl_show(struct device_driver *dd, char *buf)8694 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8695 {
8696 return sprintf(buf, "%u\n", megasas_dbg_lvl);
8697 }
8698
dbg_lvl_store(struct device_driver *dd, const char *buf, size_t count)8699 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8700 size_t count)
8701 {
8702 int retval = count;
8703
8704 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8705 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8706 retval = -EINVAL;
8707 }
8708 return retval;
8709 }
8710 static DRIVER_ATTR_RW(dbg_lvl);
8711
8712 static ssize_t
support_nvme_encapsulation_show(struct device_driver *dd, char *buf)8713 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8714 {
8715 return sprintf(buf, "%u\n", support_nvme_encapsulation);
8716 }
8717
8718 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8719
8720 static ssize_t
support_pci_lane_margining_show(struct device_driver *dd, char *buf)8721 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8722 {
8723 return sprintf(buf, "%u\n", support_pci_lane_margining);
8724 }
8725
8726 static DRIVER_ATTR_RO(support_pci_lane_margining);
8727
megasas_remove_scsi_device(struct scsi_device *sdev)8728 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8729 {
8730 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8731 scsi_remove_device(sdev);
8732 scsi_device_put(sdev);
8733 }
8734
8735 /**
8736 * megasas_update_device_list - Update the PD and LD device list from FW
8737 * after an AEN event notification
8738 * @instance: Adapter soft state
8739 * @event_type: Indicates type of event (PD or LD event)
8740 *
8741 * @return: Success or failure
8742 *
8743 * Issue DCMDs to Firmware to update the internal device list in driver.
8744 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8745 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8746 */
8747 static
megasas_update_device_list(struct megasas_instance *instance, int event_type)8748 int megasas_update_device_list(struct megasas_instance *instance,
8749 int event_type)
8750 {
8751 int dcmd_ret = DCMD_SUCCESS;
8752
8753 if (instance->enable_fw_dev_list) {
8754 dcmd_ret = megasas_host_device_list_query(instance, false);
8755 if (dcmd_ret != DCMD_SUCCESS)
8756 goto out;
8757 } else {
8758 if (event_type & SCAN_PD_CHANNEL) {
8759 dcmd_ret = megasas_get_pd_list(instance);
8760
8761 if (dcmd_ret != DCMD_SUCCESS)
8762 goto out;
8763 }
8764
8765 if (event_type & SCAN_VD_CHANNEL) {
8766 if (!instance->requestorId ||
8767 (instance->requestorId &&
8768 megasas_get_ld_vf_affiliation(instance, 0))) {
8769 dcmd_ret = megasas_ld_list_query(instance,
8770 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8771 if (dcmd_ret != DCMD_SUCCESS)
8772 goto out;
8773 }
8774 }
8775 }
8776
8777 out:
8778 return dcmd_ret;
8779 }
8780
8781 /**
8782 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8783 * after an AEN event notification
8784 * @instance: Adapter soft state
8785 * @scan_type: Indicates type of devices (PD/LD) to add
8786 * @return void
8787 */
8788 static
megasas_add_remove_devices(struct megasas_instance *instance, int scan_type)8789 void megasas_add_remove_devices(struct megasas_instance *instance,
8790 int scan_type)
8791 {
8792 int i, j;
8793 u16 pd_index = 0;
8794 u16 ld_index = 0;
8795 u16 channel = 0, id = 0;
8796 struct Scsi_Host *host;
8797 struct scsi_device *sdev1;
8798 struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8799 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8800
8801 host = instance->host;
8802
8803 if (instance->enable_fw_dev_list) {
8804 targetid_list = instance->host_device_list_buf;
8805 for (i = 0; i < targetid_list->count; i++) {
8806 targetid_entry = &targetid_list->host_device_list[i];
8807 if (targetid_entry->flags.u.bits.is_sys_pd) {
8808 channel = le16_to_cpu(targetid_entry->target_id) /
8809 MEGASAS_MAX_DEV_PER_CHANNEL;
8810 id = le16_to_cpu(targetid_entry->target_id) %
8811 MEGASAS_MAX_DEV_PER_CHANNEL;
8812 } else {
8813 channel = MEGASAS_MAX_PD_CHANNELS +
8814 (le16_to_cpu(targetid_entry->target_id) /
8815 MEGASAS_MAX_DEV_PER_CHANNEL);
8816 id = le16_to_cpu(targetid_entry->target_id) %
8817 MEGASAS_MAX_DEV_PER_CHANNEL;
8818 }
8819 sdev1 = scsi_device_lookup(host, channel, id, 0);
8820 if (!sdev1) {
8821 scsi_add_device(host, channel, id, 0);
8822 } else {
8823 scsi_device_put(sdev1);
8824 }
8825 }
8826 }
8827
8828 if (scan_type & SCAN_PD_CHANNEL) {
8829 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8830 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8831 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8832 sdev1 = scsi_device_lookup(host, i, j, 0);
8833 if (instance->pd_list[pd_index].driveState ==
8834 MR_PD_STATE_SYSTEM) {
8835 if (!sdev1)
8836 scsi_add_device(host, i, j, 0);
8837 else
8838 scsi_device_put(sdev1);
8839 } else {
8840 if (sdev1)
8841 megasas_remove_scsi_device(sdev1);
8842 }
8843 }
8844 }
8845 }
8846
8847 if (scan_type & SCAN_VD_CHANNEL) {
8848 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8849 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8850 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8851 sdev1 = scsi_device_lookup(host,
8852 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8853 if (instance->ld_ids[ld_index] != 0xff) {
8854 if (!sdev1)
8855 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8856 else
8857 scsi_device_put(sdev1);
8858 } else {
8859 if (sdev1)
8860 megasas_remove_scsi_device(sdev1);
8861 }
8862 }
8863 }
8864 }
8865
8866 }
8867
8868 static void
megasas_aen_polling(struct work_struct *work)8869 megasas_aen_polling(struct work_struct *work)
8870 {
8871 struct megasas_aen_event *ev =
8872 container_of(work, struct megasas_aen_event, hotplug_work.work);
8873 struct megasas_instance *instance = ev->instance;
8874 union megasas_evt_class_locale class_locale;
8875 int event_type = 0;
8876 u32 seq_num;
8877 u16 ld_target_id;
8878 int error;
8879 u8 dcmd_ret = DCMD_SUCCESS;
8880 struct scsi_device *sdev1;
8881
8882 if (!instance) {
8883 printk(KERN_ERR "invalid instance!\n");
8884 kfree(ev);
8885 return;
8886 }
8887
8888 /* Don't run the event workqueue thread if OCR is running */
8889 mutex_lock(&instance->reset_mutex);
8890
8891 instance->ev = NULL;
8892 if (instance->evt_detail) {
8893 megasas_decode_evt(instance);
8894
8895 switch (le32_to_cpu(instance->evt_detail->code)) {
8896
8897 case MR_EVT_PD_INSERTED:
8898 case MR_EVT_PD_REMOVED:
8899 event_type = SCAN_PD_CHANNEL;
8900 break;
8901
8902 case MR_EVT_LD_OFFLINE:
8903 case MR_EVT_LD_DELETED:
8904 ld_target_id = instance->evt_detail->args.ld.target_id;
8905 sdev1 = scsi_device_lookup(instance->host,
8906 MEGASAS_MAX_PD_CHANNELS +
8907 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL),
8908 (ld_target_id - MEGASAS_MAX_DEV_PER_CHANNEL),
8909 0);
8910 if (sdev1)
8911 megasas_remove_scsi_device(sdev1);
8912
8913 event_type = SCAN_VD_CHANNEL;
8914 break;
8915 case MR_EVT_LD_CREATED:
8916 event_type = SCAN_VD_CHANNEL;
8917 break;
8918
8919 case MR_EVT_CFG_CLEARED:
8920 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8921 case MR_EVT_FOREIGN_CFG_IMPORTED:
8922 case MR_EVT_LD_STATE_CHANGE:
8923 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8924 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8925 instance->host->host_no);
8926 break;
8927
8928 case MR_EVT_CTRL_PROP_CHANGED:
8929 dcmd_ret = megasas_get_ctrl_info(instance);
8930 if (dcmd_ret == DCMD_SUCCESS &&
8931 instance->snapdump_wait_time) {
8932 megasas_get_snapdump_properties(instance);
8933 dev_info(&instance->pdev->dev,
8934 "Snap dump wait time\t: %d\n",
8935 instance->snapdump_wait_time);
8936 }
8937 break;
8938 default:
8939 event_type = 0;
8940 break;
8941 }
8942 } else {
8943 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8944 mutex_unlock(&instance->reset_mutex);
8945 kfree(ev);
8946 return;
8947 }
8948
8949 if (event_type)
8950 dcmd_ret = megasas_update_device_list(instance, event_type);
8951
8952 mutex_unlock(&instance->reset_mutex);
8953
8954 if (event_type && dcmd_ret == DCMD_SUCCESS)
8955 megasas_add_remove_devices(instance, event_type);
8956
8957 if (dcmd_ret == DCMD_SUCCESS)
8958 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8959 else
8960 seq_num = instance->last_seq_num;
8961
8962 /* Register AEN with FW for latest sequence number plus 1 */
8963 class_locale.members.reserved = 0;
8964 class_locale.members.locale = MR_EVT_LOCALE_ALL;
8965 class_locale.members.class = MR_EVT_CLASS_DEBUG;
8966
8967 if (instance->aen_cmd != NULL) {
8968 kfree(ev);
8969 return;
8970 }
8971
8972 mutex_lock(&instance->reset_mutex);
8973 error = megasas_register_aen(instance, seq_num,
8974 class_locale.word);
8975 if (error)
8976 dev_err(&instance->pdev->dev,
8977 "register aen failed error %x\n", error);
8978
8979 mutex_unlock(&instance->reset_mutex);
8980 kfree(ev);
8981 }
8982
8983 /**
8984 * megasas_init - Driver load entry point
8985 */
megasas_init(void)8986 static int __init megasas_init(void)
8987 {
8988 int rval;
8989
8990 /*
8991 * Booted in kdump kernel, minimize memory footprints by
8992 * disabling few features
8993 */
8994 if (reset_devices) {
8995 msix_vectors = 1;
8996 rdpq_enable = 0;
8997 dual_qdepth_disable = 1;
8998 }
8999
9000 /*
9001 * Announce driver version and other information
9002 */
9003 pr_info("megasas: %s\n", MEGASAS_VERSION);
9004
9005 spin_lock_init(&poll_aen_lock);
9006
9007 support_poll_for_event = 2;
9008 support_device_change = 1;
9009 support_nvme_encapsulation = true;
9010 support_pci_lane_margining = true;
9011
9012 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
9013
9014 /*
9015 * Register character device node
9016 */
9017 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
9018
9019 if (rval < 0) {
9020 printk(KERN_DEBUG "megasas: failed to open device node\n");
9021 return rval;
9022 }
9023
9024 megasas_mgmt_majorno = rval;
9025
9026 megasas_init_debugfs();
9027
9028 /*
9029 * Register ourselves as PCI hotplug module
9030 */
9031 rval = pci_register_driver(&megasas_pci_driver);
9032
9033 if (rval) {
9034 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
9035 goto err_pcidrv;
9036 }
9037
9038 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
9039 (event_log_level > MFI_EVT_CLASS_DEAD)) {
9040 pr_warn("megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
9041 event_log_level = MFI_EVT_CLASS_CRITICAL;
9042 }
9043
9044 rval = driver_create_file(&megasas_pci_driver.driver,
9045 &driver_attr_version);
9046 if (rval)
9047 goto err_dcf_attr_ver;
9048
9049 rval = driver_create_file(&megasas_pci_driver.driver,
9050 &driver_attr_release_date);
9051 if (rval)
9052 goto err_dcf_rel_date;
9053
9054 rval = driver_create_file(&megasas_pci_driver.driver,
9055 &driver_attr_support_poll_for_event);
9056 if (rval)
9057 goto err_dcf_support_poll_for_event;
9058
9059 rval = driver_create_file(&megasas_pci_driver.driver,
9060 &driver_attr_dbg_lvl);
9061 if (rval)
9062 goto err_dcf_dbg_lvl;
9063 rval = driver_create_file(&megasas_pci_driver.driver,
9064 &driver_attr_support_device_change);
9065 if (rval)
9066 goto err_dcf_support_device_change;
9067
9068 rval = driver_create_file(&megasas_pci_driver.driver,
9069 &driver_attr_support_nvme_encapsulation);
9070 if (rval)
9071 goto err_dcf_support_nvme_encapsulation;
9072
9073 rval = driver_create_file(&megasas_pci_driver.driver,
9074 &driver_attr_support_pci_lane_margining);
9075 if (rval)
9076 goto err_dcf_support_pci_lane_margining;
9077
9078 return rval;
9079
9080 err_dcf_support_pci_lane_margining:
9081 driver_remove_file(&megasas_pci_driver.driver,
9082 &driver_attr_support_nvme_encapsulation);
9083
9084 err_dcf_support_nvme_encapsulation:
9085 driver_remove_file(&megasas_pci_driver.driver,
9086 &driver_attr_support_device_change);
9087
9088 err_dcf_support_device_change:
9089 driver_remove_file(&megasas_pci_driver.driver,
9090 &driver_attr_dbg_lvl);
9091 err_dcf_dbg_lvl:
9092 driver_remove_file(&megasas_pci_driver.driver,
9093 &driver_attr_support_poll_for_event);
9094 err_dcf_support_poll_for_event:
9095 driver_remove_file(&megasas_pci_driver.driver,
9096 &driver_attr_release_date);
9097 err_dcf_rel_date:
9098 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9099 err_dcf_attr_ver:
9100 pci_unregister_driver(&megasas_pci_driver);
9101 err_pcidrv:
9102 megasas_exit_debugfs();
9103 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9104 return rval;
9105 }
9106
9107 /**
9108 * megasas_exit - Driver unload entry point
9109 */
megasas_exit(void)9110 static void __exit megasas_exit(void)
9111 {
9112 driver_remove_file(&megasas_pci_driver.driver,
9113 &driver_attr_dbg_lvl);
9114 driver_remove_file(&megasas_pci_driver.driver,
9115 &driver_attr_support_poll_for_event);
9116 driver_remove_file(&megasas_pci_driver.driver,
9117 &driver_attr_support_device_change);
9118 driver_remove_file(&megasas_pci_driver.driver,
9119 &driver_attr_release_date);
9120 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9121 driver_remove_file(&megasas_pci_driver.driver,
9122 &driver_attr_support_nvme_encapsulation);
9123 driver_remove_file(&megasas_pci_driver.driver,
9124 &driver_attr_support_pci_lane_margining);
9125
9126 pci_unregister_driver(&megasas_pci_driver);
9127 megasas_exit_debugfs();
9128 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9129 }
9130
9131 module_init(megasas_init);
9132 module_exit(megasas_exit);
9133