1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Copyright (C) 2015 Cavium, Inc. 4 */ 5 6#include <linux/acpi.h> 7#include <linux/module.h> 8#include <linux/interrupt.h> 9#include <linux/pci.h> 10#include <linux/netdevice.h> 11#include <linux/etherdevice.h> 12#include <linux/phy.h> 13#include <linux/of.h> 14#include <linux/of_mdio.h> 15#include <linux/of_net.h> 16 17#include "nic_reg.h" 18#include "nic.h" 19#include "thunder_bgx.h" 20 21#define DRV_NAME "thunder_bgx" 22#define DRV_VERSION "1.0" 23 24/* RX_DMAC_CTL configuration */ 25enum MCAST_MODE { 26 MCAST_MODE_REJECT = 0x0, 27 MCAST_MODE_ACCEPT = 0x1, 28 MCAST_MODE_CAM_FILTER = 0x2, 29 RSVD = 0x3 30}; 31 32#define BCAST_ACCEPT BIT(0) 33#define CAM_ACCEPT BIT(3) 34#define MCAST_MODE_MASK 0x3 35#define BGX_MCAST_MODE(x) (x << 1) 36 37struct dmac_map { 38 u64 vf_map; 39 u64 dmac; 40}; 41 42struct lmac { 43 struct bgx *bgx; 44 /* actual number of DMACs configured */ 45 u8 dmacs_cfg; 46 /* overal number of possible DMACs could be configured per LMAC */ 47 u8 dmacs_count; 48 struct dmac_map *dmacs; /* DMAC:VFs tracking filter array */ 49 u8 mac[ETH_ALEN]; 50 u8 lmac_type; 51 u8 lane_to_sds; 52 bool use_training; 53 bool autoneg; 54 bool link_up; 55 int lmacid; /* ID within BGX */ 56 int lmacid_bd; /* ID on board */ 57 struct net_device netdev; 58 struct phy_device *phydev; 59 unsigned int last_duplex; 60 unsigned int last_link; 61 unsigned int last_speed; 62 bool is_sgmii; 63 struct delayed_work dwork; 64 struct workqueue_struct *check_link; 65}; 66 67struct bgx { 68 u8 bgx_id; 69 struct lmac lmac[MAX_LMAC_PER_BGX]; 70 u8 lmac_count; 71 u8 max_lmac; 72 u8 acpi_lmac_idx; 73 void __iomem *reg_base; 74 struct pci_dev *pdev; 75 bool is_dlm; 76 bool is_rgx; 77}; 78 79static struct bgx *bgx_vnic[MAX_BGX_THUNDER]; 80static int lmac_count; /* Total no of LMACs in system */ 81 82static int bgx_xaui_check_link(struct lmac *lmac); 83 84/* Supported devices */ 85static const struct pci_device_id bgx_id_table[] = { 86 { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVICE_ID_THUNDER_BGX) }, 87 { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVICE_ID_THUNDER_RGX) }, 88 { 0, } /* end of table */ 89}; 90 91MODULE_AUTHOR("Cavium Inc"); 92MODULE_DESCRIPTION("Cavium Thunder BGX/MAC Driver"); 93MODULE_LICENSE("GPL v2"); 94MODULE_VERSION(DRV_VERSION); 95MODULE_DEVICE_TABLE(pci, bgx_id_table); 96 97/* The Cavium ThunderX network controller can *only* be found in SoCs 98 * containing the ThunderX ARM64 CPU implementation. All accesses to the device 99 * registers on this platform are implicitly strongly ordered with respect 100 * to memory accesses. So writeq_relaxed() and readq_relaxed() are safe to use 101 * with no memory barriers in this driver. The readq()/writeq() functions add 102 * explicit ordering operation which in this case are redundant, and only 103 * add overhead. 104 */ 105 106/* Register read/write APIs */ 107static u64 bgx_reg_read(struct bgx *bgx, u8 lmac, u64 offset) 108{ 109 void __iomem *addr = bgx->reg_base + ((u32)lmac << 20) + offset; 110 111 return readq_relaxed(addr); 112} 113 114static void bgx_reg_write(struct bgx *bgx, u8 lmac, u64 offset, u64 val) 115{ 116 void __iomem *addr = bgx->reg_base + ((u32)lmac << 20) + offset; 117 118 writeq_relaxed(val, addr); 119} 120 121static void bgx_reg_modify(struct bgx *bgx, u8 lmac, u64 offset, u64 val) 122{ 123 void __iomem *addr = bgx->reg_base + ((u32)lmac << 20) + offset; 124 125 writeq_relaxed(val | readq_relaxed(addr), addr); 126} 127 128static int bgx_poll_reg(struct bgx *bgx, u8 lmac, u64 reg, u64 mask, bool zero) 129{ 130 int timeout = 100; 131 u64 reg_val; 132 133 while (timeout) { 134 reg_val = bgx_reg_read(bgx, lmac, reg); 135 if (zero && !(reg_val & mask)) 136 return 0; 137 if (!zero && (reg_val & mask)) 138 return 0; 139 usleep_range(1000, 2000); 140 timeout--; 141 } 142 return 1; 143} 144 145static int max_bgx_per_node; 146static void set_max_bgx_per_node(struct pci_dev *pdev) 147{ 148 u16 sdevid; 149 150 if (max_bgx_per_node) 151 return; 152 153 pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &sdevid); 154 switch (sdevid) { 155 case PCI_SUBSYS_DEVID_81XX_BGX: 156 case PCI_SUBSYS_DEVID_81XX_RGX: 157 max_bgx_per_node = MAX_BGX_PER_CN81XX; 158 break; 159 case PCI_SUBSYS_DEVID_83XX_BGX: 160 max_bgx_per_node = MAX_BGX_PER_CN83XX; 161 break; 162 case PCI_SUBSYS_DEVID_88XX_BGX: 163 default: 164 max_bgx_per_node = MAX_BGX_PER_CN88XX; 165 break; 166 } 167} 168 169static struct bgx *get_bgx(int node, int bgx_idx) 170{ 171 int idx = (node * max_bgx_per_node) + bgx_idx; 172 173 return bgx_vnic[idx]; 174} 175 176/* Return number of BGX present in HW */ 177unsigned bgx_get_map(int node) 178{ 179 int i; 180 unsigned map = 0; 181 182 for (i = 0; i < max_bgx_per_node; i++) { 183 if (bgx_vnic[(node * max_bgx_per_node) + i]) 184 map |= (1 << i); 185 } 186 187 return map; 188} 189EXPORT_SYMBOL(bgx_get_map); 190 191/* Return number of LMAC configured for this BGX */ 192int bgx_get_lmac_count(int node, int bgx_idx) 193{ 194 struct bgx *bgx; 195 196 bgx = get_bgx(node, bgx_idx); 197 if (bgx) 198 return bgx->lmac_count; 199 200 return 0; 201} 202EXPORT_SYMBOL(bgx_get_lmac_count); 203 204/* Returns the current link status of LMAC */ 205void bgx_get_lmac_link_state(int node, int bgx_idx, int lmacid, void *status) 206{ 207 struct bgx_link_status *link = (struct bgx_link_status *)status; 208 struct bgx *bgx; 209 struct lmac *lmac; 210 211 bgx = get_bgx(node, bgx_idx); 212 if (!bgx) 213 return; 214 215 lmac = &bgx->lmac[lmacid]; 216 link->mac_type = lmac->lmac_type; 217 link->link_up = lmac->link_up; 218 link->duplex = lmac->last_duplex; 219 link->speed = lmac->last_speed; 220} 221EXPORT_SYMBOL(bgx_get_lmac_link_state); 222 223const u8 *bgx_get_lmac_mac(int node, int bgx_idx, int lmacid) 224{ 225 struct bgx *bgx = get_bgx(node, bgx_idx); 226 227 if (bgx) 228 return bgx->lmac[lmacid].mac; 229 230 return NULL; 231} 232EXPORT_SYMBOL(bgx_get_lmac_mac); 233 234void bgx_set_lmac_mac(int node, int bgx_idx, int lmacid, const u8 *mac) 235{ 236 struct bgx *bgx = get_bgx(node, bgx_idx); 237 238 if (!bgx) 239 return; 240 241 ether_addr_copy(bgx->lmac[lmacid].mac, mac); 242} 243EXPORT_SYMBOL(bgx_set_lmac_mac); 244 245static void bgx_flush_dmac_cam_filter(struct bgx *bgx, int lmacid) 246{ 247 struct lmac *lmac = NULL; 248 u8 idx = 0; 249 250 lmac = &bgx->lmac[lmacid]; 251 /* reset CAM filters */ 252 for (idx = 0; idx < lmac->dmacs_count; idx++) 253 bgx_reg_write(bgx, 0, BGX_CMR_RX_DMACX_CAM + 254 ((lmacid * lmac->dmacs_count) + idx) * 255 sizeof(u64), 0); 256} 257 258static void bgx_lmac_remove_filters(struct lmac *lmac, u8 vf_id) 259{ 260 int i = 0; 261 262 if (!lmac) 263 return; 264 265 /* We've got reset filters request from some of attached VF, while the 266 * others might want to keep their configuration. So in this case lets 267 * iterate over all of configured filters and decrease number of 268 * referencies. if some addresses get zero refs remove them from list 269 */ 270 for (i = lmac->dmacs_cfg - 1; i >= 0; i--) { 271 lmac->dmacs[i].vf_map &= ~BIT_ULL(vf_id); 272 if (!lmac->dmacs[i].vf_map) { 273 lmac->dmacs_cfg--; 274 lmac->dmacs[i].dmac = 0; 275 lmac->dmacs[i].vf_map = 0; 276 } 277 } 278} 279 280static int bgx_lmac_save_filter(struct lmac *lmac, u64 dmac, u8 vf_id) 281{ 282 u8 i = 0; 283 284 if (!lmac) 285 return -1; 286 287 /* At the same time we could have several VFs 'attached' to some 288 * particular LMAC, and each VF is represented as network interface 289 * for kernel. So from user perspective it should be possible to 290 * manipulate with its' (VF) receive modes. However from PF 291 * driver perspective we need to keep track of filter configurations 292 * for different VFs to prevent filter values dupes 293 */ 294 for (i = 0; i < lmac->dmacs_cfg; i++) { 295 if (lmac->dmacs[i].dmac == dmac) { 296 lmac->dmacs[i].vf_map |= BIT_ULL(vf_id); 297 return -1; 298 } 299 } 300 301 if (!(lmac->dmacs_cfg < lmac->dmacs_count)) 302 return -1; 303 304 /* keep it for further tracking */ 305 lmac->dmacs[lmac->dmacs_cfg].dmac = dmac; 306 lmac->dmacs[lmac->dmacs_cfg].vf_map = BIT_ULL(vf_id); 307 lmac->dmacs_cfg++; 308 return 0; 309} 310 311static int bgx_set_dmac_cam_filter_mac(struct bgx *bgx, int lmacid, 312 u64 cam_dmac, u8 idx) 313{ 314 struct lmac *lmac = NULL; 315 u64 cfg = 0; 316 317 /* skip zero addresses as meaningless */ 318 if (!cam_dmac || !bgx) 319 return -1; 320 321 lmac = &bgx->lmac[lmacid]; 322 323 /* configure DCAM filtering for designated LMAC */ 324 cfg = RX_DMACX_CAM_LMACID(lmacid & LMAC_ID_MASK) | 325 RX_DMACX_CAM_EN | cam_dmac; 326 bgx_reg_write(bgx, 0, BGX_CMR_RX_DMACX_CAM + 327 ((lmacid * lmac->dmacs_count) + idx) * sizeof(u64), cfg); 328 return 0; 329} 330 331void bgx_set_dmac_cam_filter(int node, int bgx_idx, int lmacid, 332 u64 cam_dmac, u8 vf_id) 333{ 334 struct bgx *bgx = get_bgx(node, bgx_idx); 335 struct lmac *lmac = NULL; 336 337 if (!bgx) 338 return; 339 340 lmac = &bgx->lmac[lmacid]; 341 342 if (!cam_dmac) 343 cam_dmac = ether_addr_to_u64(lmac->mac); 344 345 /* since we might have several VFs attached to particular LMAC 346 * and kernel could call mcast config for each of them with the 347 * same MAC, check if requested MAC is already in filtering list and 348 * updare/prepare list of MACs to be applied later to HW filters 349 */ 350 bgx_lmac_save_filter(lmac, cam_dmac, vf_id); 351} 352EXPORT_SYMBOL(bgx_set_dmac_cam_filter); 353 354void bgx_set_xcast_mode(int node, int bgx_idx, int lmacid, u8 mode) 355{ 356 struct bgx *bgx = get_bgx(node, bgx_idx); 357 struct lmac *lmac = NULL; 358 u64 cfg = 0; 359 u8 i = 0; 360 361 if (!bgx) 362 return; 363 364 lmac = &bgx->lmac[lmacid]; 365 366 cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_RX_DMAC_CTL); 367 if (mode & BGX_XCAST_BCAST_ACCEPT) 368 cfg |= BCAST_ACCEPT; 369 else 370 cfg &= ~BCAST_ACCEPT; 371 372 /* disable all MCASTs and DMAC filtering */ 373 cfg &= ~(CAM_ACCEPT | BGX_MCAST_MODE(MCAST_MODE_MASK)); 374 375 /* check requested bits and set filtergin mode appropriately */ 376 if (mode & (BGX_XCAST_MCAST_ACCEPT)) { 377 cfg |= (BGX_MCAST_MODE(MCAST_MODE_ACCEPT)); 378 } else if (mode & BGX_XCAST_MCAST_FILTER) { 379 cfg |= (BGX_MCAST_MODE(MCAST_MODE_CAM_FILTER) | CAM_ACCEPT); 380 for (i = 0; i < lmac->dmacs_cfg; i++) 381 bgx_set_dmac_cam_filter_mac(bgx, lmacid, 382 lmac->dmacs[i].dmac, i); 383 } 384 bgx_reg_write(bgx, lmacid, BGX_CMRX_RX_DMAC_CTL, cfg); 385} 386EXPORT_SYMBOL(bgx_set_xcast_mode); 387 388void bgx_reset_xcast_mode(int node, int bgx_idx, int lmacid, u8 vf_id) 389{ 390 struct bgx *bgx = get_bgx(node, bgx_idx); 391 392 if (!bgx) 393 return; 394 395 bgx_lmac_remove_filters(&bgx->lmac[lmacid], vf_id); 396 bgx_flush_dmac_cam_filter(bgx, lmacid); 397 bgx_set_xcast_mode(node, bgx_idx, lmacid, 398 (BGX_XCAST_BCAST_ACCEPT | BGX_XCAST_MCAST_ACCEPT)); 399} 400EXPORT_SYMBOL(bgx_reset_xcast_mode); 401 402void bgx_lmac_rx_tx_enable(int node, int bgx_idx, int lmacid, bool enable) 403{ 404 struct bgx *bgx = get_bgx(node, bgx_idx); 405 struct lmac *lmac; 406 u64 cfg; 407 408 if (!bgx) 409 return; 410 lmac = &bgx->lmac[lmacid]; 411 412 cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); 413 if (enable) { 414 cfg |= CMR_PKT_RX_EN | CMR_PKT_TX_EN; 415 416 /* enable TX FIFO Underflow interrupt */ 417 bgx_reg_modify(bgx, lmacid, BGX_GMP_GMI_TXX_INT_ENA_W1S, 418 GMI_TXX_INT_UNDFLW); 419 } else { 420 cfg &= ~(CMR_PKT_RX_EN | CMR_PKT_TX_EN); 421 422 /* Disable TX FIFO Underflow interrupt */ 423 bgx_reg_modify(bgx, lmacid, BGX_GMP_GMI_TXX_INT_ENA_W1C, 424 GMI_TXX_INT_UNDFLW); 425 } 426 bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cfg); 427 428 if (bgx->is_rgx) 429 xcv_setup_link(enable ? lmac->link_up : 0, lmac->last_speed); 430} 431EXPORT_SYMBOL(bgx_lmac_rx_tx_enable); 432 433/* Enables or disables timestamp insertion by BGX for Rx packets */ 434void bgx_config_timestamping(int node, int bgx_idx, int lmacid, bool enable) 435{ 436 struct bgx *bgx = get_bgx(node, bgx_idx); 437 struct lmac *lmac; 438 u64 csr_offset, cfg; 439 440 if (!bgx) 441 return; 442 443 lmac = &bgx->lmac[lmacid]; 444 445 if (lmac->lmac_type == BGX_MODE_SGMII || 446 lmac->lmac_type == BGX_MODE_QSGMII || 447 lmac->lmac_type == BGX_MODE_RGMII) 448 csr_offset = BGX_GMP_GMI_RXX_FRM_CTL; 449 else 450 csr_offset = BGX_SMUX_RX_FRM_CTL; 451 452 cfg = bgx_reg_read(bgx, lmacid, csr_offset); 453 454 if (enable) 455 cfg |= BGX_PKT_RX_PTP_EN; 456 else 457 cfg &= ~BGX_PKT_RX_PTP_EN; 458 bgx_reg_write(bgx, lmacid, csr_offset, cfg); 459} 460EXPORT_SYMBOL(bgx_config_timestamping); 461 462void bgx_lmac_get_pfc(int node, int bgx_idx, int lmacid, void *pause) 463{ 464 struct pfc *pfc = (struct pfc *)pause; 465 struct bgx *bgx = get_bgx(node, bgx_idx); 466 struct lmac *lmac; 467 u64 cfg; 468 469 if (!bgx) 470 return; 471 lmac = &bgx->lmac[lmacid]; 472 if (lmac->is_sgmii) 473 return; 474 475 cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_CBFC_CTL); 476 pfc->fc_rx = cfg & RX_EN; 477 pfc->fc_tx = cfg & TX_EN; 478 pfc->autoneg = 0; 479} 480EXPORT_SYMBOL(bgx_lmac_get_pfc); 481 482void bgx_lmac_set_pfc(int node, int bgx_idx, int lmacid, void *pause) 483{ 484 struct pfc *pfc = (struct pfc *)pause; 485 struct bgx *bgx = get_bgx(node, bgx_idx); 486 struct lmac *lmac; 487 u64 cfg; 488 489 if (!bgx) 490 return; 491 lmac = &bgx->lmac[lmacid]; 492 if (lmac->is_sgmii) 493 return; 494 495 cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_CBFC_CTL); 496 cfg &= ~(RX_EN | TX_EN); 497 cfg |= (pfc->fc_rx ? RX_EN : 0x00); 498 cfg |= (pfc->fc_tx ? TX_EN : 0x00); 499 bgx_reg_write(bgx, lmacid, BGX_SMUX_CBFC_CTL, cfg); 500} 501EXPORT_SYMBOL(bgx_lmac_set_pfc); 502 503static void bgx_sgmii_change_link_state(struct lmac *lmac) 504{ 505 struct bgx *bgx = lmac->bgx; 506 u64 cmr_cfg; 507 u64 port_cfg = 0; 508 u64 misc_ctl = 0; 509 bool tx_en, rx_en; 510 511 cmr_cfg = bgx_reg_read(bgx, lmac->lmacid, BGX_CMRX_CFG); 512 tx_en = cmr_cfg & CMR_PKT_TX_EN; 513 rx_en = cmr_cfg & CMR_PKT_RX_EN; 514 cmr_cfg &= ~(CMR_PKT_RX_EN | CMR_PKT_TX_EN); 515 bgx_reg_write(bgx, lmac->lmacid, BGX_CMRX_CFG, cmr_cfg); 516 517 /* Wait for BGX RX to be idle */ 518 if (bgx_poll_reg(bgx, lmac->lmacid, BGX_GMP_GMI_PRTX_CFG, 519 GMI_PORT_CFG_RX_IDLE, false)) { 520 dev_err(&bgx->pdev->dev, "BGX%d LMAC%d GMI RX not idle\n", 521 bgx->bgx_id, lmac->lmacid); 522 return; 523 } 524 525 /* Wait for BGX TX to be idle */ 526 if (bgx_poll_reg(bgx, lmac->lmacid, BGX_GMP_GMI_PRTX_CFG, 527 GMI_PORT_CFG_TX_IDLE, false)) { 528 dev_err(&bgx->pdev->dev, "BGX%d LMAC%d GMI TX not idle\n", 529 bgx->bgx_id, lmac->lmacid); 530 return; 531 } 532 533 port_cfg = bgx_reg_read(bgx, lmac->lmacid, BGX_GMP_GMI_PRTX_CFG); 534 misc_ctl = bgx_reg_read(bgx, lmac->lmacid, BGX_GMP_PCS_MISCX_CTL); 535 536 if (lmac->link_up) { 537 misc_ctl &= ~PCS_MISC_CTL_GMX_ENO; 538 port_cfg &= ~GMI_PORT_CFG_DUPLEX; 539 port_cfg |= (lmac->last_duplex << 2); 540 } else { 541 misc_ctl |= PCS_MISC_CTL_GMX_ENO; 542 } 543 544 switch (lmac->last_speed) { 545 case 10: 546 port_cfg &= ~GMI_PORT_CFG_SPEED; /* speed 0 */ 547 port_cfg |= GMI_PORT_CFG_SPEED_MSB; /* speed_msb 1 */ 548 port_cfg &= ~GMI_PORT_CFG_SLOT_TIME; /* slottime 0 */ 549 misc_ctl &= ~PCS_MISC_CTL_SAMP_PT_MASK; 550 misc_ctl |= 50; /* samp_pt */ 551 bgx_reg_write(bgx, lmac->lmacid, BGX_GMP_GMI_TXX_SLOT, 64); 552 bgx_reg_write(bgx, lmac->lmacid, BGX_GMP_GMI_TXX_BURST, 0); 553 break; 554 case 100: 555 port_cfg &= ~GMI_PORT_CFG_SPEED; /* speed 0 */ 556 port_cfg &= ~GMI_PORT_CFG_SPEED_MSB; /* speed_msb 0 */ 557 port_cfg &= ~GMI_PORT_CFG_SLOT_TIME; /* slottime 0 */ 558 misc_ctl &= ~PCS_MISC_CTL_SAMP_PT_MASK; 559 misc_ctl |= 5; /* samp_pt */ 560 bgx_reg_write(bgx, lmac->lmacid, BGX_GMP_GMI_TXX_SLOT, 64); 561 bgx_reg_write(bgx, lmac->lmacid, BGX_GMP_GMI_TXX_BURST, 0); 562 break; 563 case 1000: 564 port_cfg |= GMI_PORT_CFG_SPEED; /* speed 1 */ 565 port_cfg &= ~GMI_PORT_CFG_SPEED_MSB; /* speed_msb 0 */ 566 port_cfg |= GMI_PORT_CFG_SLOT_TIME; /* slottime 1 */ 567 misc_ctl &= ~PCS_MISC_CTL_SAMP_PT_MASK; 568 misc_ctl |= 1; /* samp_pt */ 569 bgx_reg_write(bgx, lmac->lmacid, BGX_GMP_GMI_TXX_SLOT, 512); 570 if (lmac->last_duplex) 571 bgx_reg_write(bgx, lmac->lmacid, 572 BGX_GMP_GMI_TXX_BURST, 0); 573 else 574 bgx_reg_write(bgx, lmac->lmacid, 575 BGX_GMP_GMI_TXX_BURST, 8192); 576 break; 577 default: 578 break; 579 } 580 bgx_reg_write(bgx, lmac->lmacid, BGX_GMP_PCS_MISCX_CTL, misc_ctl); 581 bgx_reg_write(bgx, lmac->lmacid, BGX_GMP_GMI_PRTX_CFG, port_cfg); 582 583 /* Restore CMR config settings */ 584 cmr_cfg |= (rx_en ? CMR_PKT_RX_EN : 0) | (tx_en ? CMR_PKT_TX_EN : 0); 585 bgx_reg_write(bgx, lmac->lmacid, BGX_CMRX_CFG, cmr_cfg); 586 587 if (bgx->is_rgx && (cmr_cfg & (CMR_PKT_RX_EN | CMR_PKT_TX_EN))) 588 xcv_setup_link(lmac->link_up, lmac->last_speed); 589} 590 591static void bgx_lmac_handler(struct net_device *netdev) 592{ 593 struct lmac *lmac = container_of(netdev, struct lmac, netdev); 594 struct phy_device *phydev; 595 int link_changed = 0; 596 597 if (!lmac) 598 return; 599 600 phydev = lmac->phydev; 601 602 if (!phydev->link && lmac->last_link) 603 link_changed = -1; 604 605 if (phydev->link && 606 (lmac->last_duplex != phydev->duplex || 607 lmac->last_link != phydev->link || 608 lmac->last_speed != phydev->speed)) { 609 link_changed = 1; 610 } 611 612 lmac->last_link = phydev->link; 613 lmac->last_speed = phydev->speed; 614 lmac->last_duplex = phydev->duplex; 615 616 if (!link_changed) 617 return; 618 619 if (link_changed > 0) 620 lmac->link_up = true; 621 else 622 lmac->link_up = false; 623 624 if (lmac->is_sgmii) 625 bgx_sgmii_change_link_state(lmac); 626 else 627 bgx_xaui_check_link(lmac); 628} 629 630u64 bgx_get_rx_stats(int node, int bgx_idx, int lmac, int idx) 631{ 632 struct bgx *bgx; 633 634 bgx = get_bgx(node, bgx_idx); 635 if (!bgx) 636 return 0; 637 638 if (idx > 8) 639 lmac = 0; 640 return bgx_reg_read(bgx, lmac, BGX_CMRX_RX_STAT0 + (idx * 8)); 641} 642EXPORT_SYMBOL(bgx_get_rx_stats); 643 644u64 bgx_get_tx_stats(int node, int bgx_idx, int lmac, int idx) 645{ 646 struct bgx *bgx; 647 648 bgx = get_bgx(node, bgx_idx); 649 if (!bgx) 650 return 0; 651 652 return bgx_reg_read(bgx, lmac, BGX_CMRX_TX_STAT0 + (idx * 8)); 653} 654EXPORT_SYMBOL(bgx_get_tx_stats); 655 656/* Configure BGX LMAC in internal loopback mode */ 657void bgx_lmac_internal_loopback(int node, int bgx_idx, 658 int lmac_idx, bool enable) 659{ 660 struct bgx *bgx; 661 struct lmac *lmac; 662 u64 cfg; 663 664 bgx = get_bgx(node, bgx_idx); 665 if (!bgx) 666 return; 667 668 lmac = &bgx->lmac[lmac_idx]; 669 if (lmac->is_sgmii) { 670 cfg = bgx_reg_read(bgx, lmac_idx, BGX_GMP_PCS_MRX_CTL); 671 if (enable) 672 cfg |= PCS_MRX_CTL_LOOPBACK1; 673 else 674 cfg &= ~PCS_MRX_CTL_LOOPBACK1; 675 bgx_reg_write(bgx, lmac_idx, BGX_GMP_PCS_MRX_CTL, cfg); 676 } else { 677 cfg = bgx_reg_read(bgx, lmac_idx, BGX_SPUX_CONTROL1); 678 if (enable) 679 cfg |= SPU_CTL_LOOPBACK; 680 else 681 cfg &= ~SPU_CTL_LOOPBACK; 682 bgx_reg_write(bgx, lmac_idx, BGX_SPUX_CONTROL1, cfg); 683 } 684} 685EXPORT_SYMBOL(bgx_lmac_internal_loopback); 686 687static int bgx_lmac_sgmii_init(struct bgx *bgx, struct lmac *lmac) 688{ 689 int lmacid = lmac->lmacid; 690 u64 cfg; 691 692 bgx_reg_modify(bgx, lmacid, BGX_GMP_GMI_TXX_THRESH, 0x30); 693 /* max packet size */ 694 bgx_reg_modify(bgx, lmacid, BGX_GMP_GMI_RXX_JABBER, MAX_FRAME_SIZE); 695 696 /* Disable frame alignment if using preamble */ 697 cfg = bgx_reg_read(bgx, lmacid, BGX_GMP_GMI_TXX_APPEND); 698 if (cfg & 1) 699 bgx_reg_write(bgx, lmacid, BGX_GMP_GMI_TXX_SGMII_CTL, 0); 700 701 /* Enable lmac */ 702 bgx_reg_modify(bgx, lmacid, BGX_CMRX_CFG, CMR_EN); 703 704 /* PCS reset */ 705 bgx_reg_modify(bgx, lmacid, BGX_GMP_PCS_MRX_CTL, PCS_MRX_CTL_RESET); 706 if (bgx_poll_reg(bgx, lmacid, BGX_GMP_PCS_MRX_CTL, 707 PCS_MRX_CTL_RESET, true)) { 708 dev_err(&bgx->pdev->dev, "BGX PCS reset not completed\n"); 709 return -1; 710 } 711 712 /* power down, reset autoneg, autoneg enable */ 713 cfg = bgx_reg_read(bgx, lmacid, BGX_GMP_PCS_MRX_CTL); 714 cfg &= ~PCS_MRX_CTL_PWR_DN; 715 cfg |= PCS_MRX_CTL_RST_AN; 716 if (lmac->phydev) { 717 cfg |= PCS_MRX_CTL_AN_EN; 718 } else { 719 /* In scenarios where PHY driver is not present or it's a 720 * non-standard PHY, FW sets AN_EN to inform Linux driver 721 * to do auto-neg and link polling or not. 722 */ 723 if (cfg & PCS_MRX_CTL_AN_EN) 724 lmac->autoneg = true; 725 } 726 bgx_reg_write(bgx, lmacid, BGX_GMP_PCS_MRX_CTL, cfg); 727 728 if (lmac->lmac_type == BGX_MODE_QSGMII) { 729 /* Disable disparity check for QSGMII */ 730 cfg = bgx_reg_read(bgx, lmacid, BGX_GMP_PCS_MISCX_CTL); 731 cfg &= ~PCS_MISC_CTL_DISP_EN; 732 bgx_reg_write(bgx, lmacid, BGX_GMP_PCS_MISCX_CTL, cfg); 733 return 0; 734 } 735 736 if ((lmac->lmac_type == BGX_MODE_SGMII) && lmac->phydev) { 737 if (bgx_poll_reg(bgx, lmacid, BGX_GMP_PCS_MRX_STATUS, 738 PCS_MRX_STATUS_AN_CPT, false)) { 739 dev_err(&bgx->pdev->dev, "BGX AN_CPT not completed\n"); 740 return -1; 741 } 742 } 743 744 return 0; 745} 746 747static int bgx_lmac_xaui_init(struct bgx *bgx, struct lmac *lmac) 748{ 749 u64 cfg; 750 int lmacid = lmac->lmacid; 751 752 /* Reset SPU */ 753 bgx_reg_modify(bgx, lmacid, BGX_SPUX_CONTROL1, SPU_CTL_RESET); 754 if (bgx_poll_reg(bgx, lmacid, BGX_SPUX_CONTROL1, SPU_CTL_RESET, true)) { 755 dev_err(&bgx->pdev->dev, "BGX SPU reset not completed\n"); 756 return -1; 757 } 758 759 /* Disable LMAC */ 760 cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); 761 cfg &= ~CMR_EN; 762 bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cfg); 763 764 bgx_reg_modify(bgx, lmacid, BGX_SPUX_CONTROL1, SPU_CTL_LOW_POWER); 765 /* Set interleaved running disparity for RXAUI */ 766 if (lmac->lmac_type == BGX_MODE_RXAUI) 767 bgx_reg_modify(bgx, lmacid, BGX_SPUX_MISC_CONTROL, 768 SPU_MISC_CTL_INTLV_RDISP); 769 770 /* Clear receive packet disable */ 771 cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_MISC_CONTROL); 772 cfg &= ~SPU_MISC_CTL_RX_DIS; 773 bgx_reg_write(bgx, lmacid, BGX_SPUX_MISC_CONTROL, cfg); 774 775 /* clear all interrupts */ 776 cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_RX_INT); 777 bgx_reg_write(bgx, lmacid, BGX_SMUX_RX_INT, cfg); 778 cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_TX_INT); 779 bgx_reg_write(bgx, lmacid, BGX_SMUX_TX_INT, cfg); 780 cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_INT); 781 bgx_reg_write(bgx, lmacid, BGX_SPUX_INT, cfg); 782 783 if (lmac->use_training) { 784 bgx_reg_write(bgx, lmacid, BGX_SPUX_BR_PMD_LP_CUP, 0x00); 785 bgx_reg_write(bgx, lmacid, BGX_SPUX_BR_PMD_LD_CUP, 0x00); 786 bgx_reg_write(bgx, lmacid, BGX_SPUX_BR_PMD_LD_REP, 0x00); 787 /* training enable */ 788 bgx_reg_modify(bgx, lmacid, 789 BGX_SPUX_BR_PMD_CRTL, SPU_PMD_CRTL_TRAIN_EN); 790 } 791 792 /* Append FCS to each packet */ 793 bgx_reg_modify(bgx, lmacid, BGX_SMUX_TX_APPEND, SMU_TX_APPEND_FCS_D); 794 795 /* Disable forward error correction */ 796 cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_FEC_CONTROL); 797 cfg &= ~SPU_FEC_CTL_FEC_EN; 798 bgx_reg_write(bgx, lmacid, BGX_SPUX_FEC_CONTROL, cfg); 799 800 /* Disable autoneg */ 801 cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_AN_CONTROL); 802 cfg = cfg & ~(SPU_AN_CTL_AN_EN | SPU_AN_CTL_XNP_EN); 803 bgx_reg_write(bgx, lmacid, BGX_SPUX_AN_CONTROL, cfg); 804 805 cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_AN_ADV); 806 if (lmac->lmac_type == BGX_MODE_10G_KR) 807 cfg |= (1 << 23); 808 else if (lmac->lmac_type == BGX_MODE_40G_KR) 809 cfg |= (1 << 24); 810 else 811 cfg &= ~((1 << 23) | (1 << 24)); 812 cfg = cfg & (~((1ULL << 25) | (1ULL << 22) | (1ULL << 12))); 813 bgx_reg_write(bgx, lmacid, BGX_SPUX_AN_ADV, cfg); 814 815 cfg = bgx_reg_read(bgx, 0, BGX_SPU_DBG_CONTROL); 816 cfg &= ~SPU_DBG_CTL_AN_ARB_LINK_CHK_EN; 817 bgx_reg_write(bgx, 0, BGX_SPU_DBG_CONTROL, cfg); 818 819 /* Enable lmac */ 820 bgx_reg_modify(bgx, lmacid, BGX_CMRX_CFG, CMR_EN); 821 822 cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_CONTROL1); 823 cfg &= ~SPU_CTL_LOW_POWER; 824 bgx_reg_write(bgx, lmacid, BGX_SPUX_CONTROL1, cfg); 825 826 cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_TX_CTL); 827 cfg &= ~SMU_TX_CTL_UNI_EN; 828 cfg |= SMU_TX_CTL_DIC_EN; 829 bgx_reg_write(bgx, lmacid, BGX_SMUX_TX_CTL, cfg); 830 831 /* Enable receive and transmission of pause frames */ 832 bgx_reg_write(bgx, lmacid, BGX_SMUX_CBFC_CTL, ((0xffffULL << 32) | 833 BCK_EN | DRP_EN | TX_EN | RX_EN)); 834 /* Configure pause time and interval */ 835 bgx_reg_write(bgx, lmacid, 836 BGX_SMUX_TX_PAUSE_PKT_TIME, DEFAULT_PAUSE_TIME); 837 cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_TX_PAUSE_PKT_INTERVAL); 838 cfg &= ~0xFFFFull; 839 bgx_reg_write(bgx, lmacid, BGX_SMUX_TX_PAUSE_PKT_INTERVAL, 840 cfg | (DEFAULT_PAUSE_TIME - 0x1000)); 841 bgx_reg_write(bgx, lmacid, BGX_SMUX_TX_PAUSE_ZERO, 0x01); 842 843 /* take lmac_count into account */ 844 bgx_reg_modify(bgx, lmacid, BGX_SMUX_TX_THRESH, (0x100 - 1)); 845 /* max packet size */ 846 bgx_reg_modify(bgx, lmacid, BGX_SMUX_RX_JABBER, MAX_FRAME_SIZE); 847 848 return 0; 849} 850 851static int bgx_xaui_check_link(struct lmac *lmac) 852{ 853 struct bgx *bgx = lmac->bgx; 854 int lmacid = lmac->lmacid; 855 int lmac_type = lmac->lmac_type; 856 u64 cfg; 857 858 if (lmac->use_training) { 859 cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_INT); 860 if (!(cfg & (1ull << 13))) { 861 cfg = (1ull << 13) | (1ull << 14); 862 bgx_reg_write(bgx, lmacid, BGX_SPUX_INT, cfg); 863 cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_BR_PMD_CRTL); 864 cfg |= (1ull << 0); 865 bgx_reg_write(bgx, lmacid, BGX_SPUX_BR_PMD_CRTL, cfg); 866 return -1; 867 } 868 } 869 870 /* wait for PCS to come out of reset */ 871 if (bgx_poll_reg(bgx, lmacid, BGX_SPUX_CONTROL1, SPU_CTL_RESET, true)) { 872 dev_err(&bgx->pdev->dev, "BGX SPU reset not completed\n"); 873 return -1; 874 } 875 876 if ((lmac_type == BGX_MODE_10G_KR) || (lmac_type == BGX_MODE_XFI) || 877 (lmac_type == BGX_MODE_40G_KR) || (lmac_type == BGX_MODE_XLAUI)) { 878 if (bgx_poll_reg(bgx, lmacid, BGX_SPUX_BR_STATUS1, 879 SPU_BR_STATUS_BLK_LOCK, false)) { 880 dev_err(&bgx->pdev->dev, 881 "SPU_BR_STATUS_BLK_LOCK not completed\n"); 882 return -1; 883 } 884 } else { 885 if (bgx_poll_reg(bgx, lmacid, BGX_SPUX_BX_STATUS, 886 SPU_BX_STATUS_RX_ALIGN, false)) { 887 dev_err(&bgx->pdev->dev, 888 "SPU_BX_STATUS_RX_ALIGN not completed\n"); 889 return -1; 890 } 891 } 892 893 /* Clear rcvflt bit (latching high) and read it back */ 894 if (bgx_reg_read(bgx, lmacid, BGX_SPUX_STATUS2) & SPU_STATUS2_RCVFLT) 895 bgx_reg_modify(bgx, lmacid, 896 BGX_SPUX_STATUS2, SPU_STATUS2_RCVFLT); 897 if (bgx_reg_read(bgx, lmacid, BGX_SPUX_STATUS2) & SPU_STATUS2_RCVFLT) { 898 dev_err(&bgx->pdev->dev, "Receive fault, retry training\n"); 899 if (lmac->use_training) { 900 cfg = bgx_reg_read(bgx, lmacid, BGX_SPUX_INT); 901 if (!(cfg & (1ull << 13))) { 902 cfg = (1ull << 13) | (1ull << 14); 903 bgx_reg_write(bgx, lmacid, BGX_SPUX_INT, cfg); 904 cfg = bgx_reg_read(bgx, lmacid, 905 BGX_SPUX_BR_PMD_CRTL); 906 cfg |= (1ull << 0); 907 bgx_reg_write(bgx, lmacid, 908 BGX_SPUX_BR_PMD_CRTL, cfg); 909 return -1; 910 } 911 } 912 return -1; 913 } 914 915 /* Wait for BGX RX to be idle */ 916 if (bgx_poll_reg(bgx, lmacid, BGX_SMUX_CTL, SMU_CTL_RX_IDLE, false)) { 917 dev_err(&bgx->pdev->dev, "SMU RX not idle\n"); 918 return -1; 919 } 920 921 /* Wait for BGX TX to be idle */ 922 if (bgx_poll_reg(bgx, lmacid, BGX_SMUX_CTL, SMU_CTL_TX_IDLE, false)) { 923 dev_err(&bgx->pdev->dev, "SMU TX not idle\n"); 924 return -1; 925 } 926 927 /* Check for MAC RX faults */ 928 cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_RX_CTL); 929 /* 0 - Link is okay, 1 - Local fault, 2 - Remote fault */ 930 cfg &= SMU_RX_CTL_STATUS; 931 if (!cfg) 932 return 0; 933 934 /* Rx local/remote fault seen. 935 * Do lmac reinit to see if condition recovers 936 */ 937 bgx_lmac_xaui_init(bgx, lmac); 938 939 return -1; 940} 941 942static void bgx_poll_for_sgmii_link(struct lmac *lmac) 943{ 944 u64 pcs_link, an_result; 945 u8 speed; 946 947 pcs_link = bgx_reg_read(lmac->bgx, lmac->lmacid, 948 BGX_GMP_PCS_MRX_STATUS); 949 950 /*Link state bit is sticky, read it again*/ 951 if (!(pcs_link & PCS_MRX_STATUS_LINK)) 952 pcs_link = bgx_reg_read(lmac->bgx, lmac->lmacid, 953 BGX_GMP_PCS_MRX_STATUS); 954 955 if (bgx_poll_reg(lmac->bgx, lmac->lmacid, BGX_GMP_PCS_MRX_STATUS, 956 PCS_MRX_STATUS_AN_CPT, false)) { 957 lmac->link_up = false; 958 lmac->last_speed = SPEED_UNKNOWN; 959 lmac->last_duplex = DUPLEX_UNKNOWN; 960 goto next_poll; 961 } 962 963 lmac->link_up = ((pcs_link & PCS_MRX_STATUS_LINK) != 0) ? true : false; 964 an_result = bgx_reg_read(lmac->bgx, lmac->lmacid, 965 BGX_GMP_PCS_ANX_AN_RESULTS); 966 967 speed = (an_result >> 3) & 0x3; 968 lmac->last_duplex = (an_result >> 1) & 0x1; 969 switch (speed) { 970 case 0: 971 lmac->last_speed = SPEED_10; 972 break; 973 case 1: 974 lmac->last_speed = SPEED_100; 975 break; 976 case 2: 977 lmac->last_speed = SPEED_1000; 978 break; 979 default: 980 lmac->link_up = false; 981 lmac->last_speed = SPEED_UNKNOWN; 982 lmac->last_duplex = DUPLEX_UNKNOWN; 983 break; 984 } 985 986next_poll: 987 988 if (lmac->last_link != lmac->link_up) { 989 if (lmac->link_up) 990 bgx_sgmii_change_link_state(lmac); 991 lmac->last_link = lmac->link_up; 992 } 993 994 queue_delayed_work(lmac->check_link, &lmac->dwork, HZ * 3); 995} 996 997static void bgx_poll_for_link(struct work_struct *work) 998{ 999 struct lmac *lmac; 1000 u64 spu_link, smu_link; 1001 1002 lmac = container_of(work, struct lmac, dwork.work); 1003 if (lmac->is_sgmii) { 1004 bgx_poll_for_sgmii_link(lmac); 1005 return; 1006 } 1007 1008 /* Receive link is latching low. Force it high and verify it */ 1009 bgx_reg_modify(lmac->bgx, lmac->lmacid, 1010 BGX_SPUX_STATUS1, SPU_STATUS1_RCV_LNK); 1011 bgx_poll_reg(lmac->bgx, lmac->lmacid, BGX_SPUX_STATUS1, 1012 SPU_STATUS1_RCV_LNK, false); 1013 1014 spu_link = bgx_reg_read(lmac->bgx, lmac->lmacid, BGX_SPUX_STATUS1); 1015 smu_link = bgx_reg_read(lmac->bgx, lmac->lmacid, BGX_SMUX_RX_CTL); 1016 1017 if ((spu_link & SPU_STATUS1_RCV_LNK) && 1018 !(smu_link & SMU_RX_CTL_STATUS)) { 1019 lmac->link_up = true; 1020 if (lmac->lmac_type == BGX_MODE_XLAUI) 1021 lmac->last_speed = SPEED_40000; 1022 else 1023 lmac->last_speed = SPEED_10000; 1024 lmac->last_duplex = DUPLEX_FULL; 1025 } else { 1026 lmac->link_up = false; 1027 lmac->last_speed = SPEED_UNKNOWN; 1028 lmac->last_duplex = DUPLEX_UNKNOWN; 1029 } 1030 1031 if (lmac->last_link != lmac->link_up) { 1032 if (lmac->link_up) { 1033 if (bgx_xaui_check_link(lmac)) { 1034 /* Errors, clear link_up state */ 1035 lmac->link_up = false; 1036 lmac->last_speed = SPEED_UNKNOWN; 1037 lmac->last_duplex = DUPLEX_UNKNOWN; 1038 } 1039 } 1040 lmac->last_link = lmac->link_up; 1041 } 1042 1043 queue_delayed_work(lmac->check_link, &lmac->dwork, HZ * 2); 1044} 1045 1046static int phy_interface_mode(u8 lmac_type) 1047{ 1048 if (lmac_type == BGX_MODE_QSGMII) 1049 return PHY_INTERFACE_MODE_QSGMII; 1050 if (lmac_type == BGX_MODE_RGMII) 1051 return PHY_INTERFACE_MODE_RGMII_RXID; 1052 1053 return PHY_INTERFACE_MODE_SGMII; 1054} 1055 1056static int bgx_lmac_enable(struct bgx *bgx, u8 lmacid) 1057{ 1058 struct lmac *lmac; 1059 u64 cfg; 1060 1061 lmac = &bgx->lmac[lmacid]; 1062 lmac->bgx = bgx; 1063 1064 if ((lmac->lmac_type == BGX_MODE_SGMII) || 1065 (lmac->lmac_type == BGX_MODE_QSGMII) || 1066 (lmac->lmac_type == BGX_MODE_RGMII)) { 1067 lmac->is_sgmii = true; 1068 if (bgx_lmac_sgmii_init(bgx, lmac)) 1069 return -1; 1070 } else { 1071 lmac->is_sgmii = false; 1072 if (bgx_lmac_xaui_init(bgx, lmac)) 1073 return -1; 1074 } 1075 1076 if (lmac->is_sgmii) { 1077 cfg = bgx_reg_read(bgx, lmacid, BGX_GMP_GMI_TXX_APPEND); 1078 cfg |= ((1ull << 2) | (1ull << 1)); /* FCS and PAD */ 1079 bgx_reg_modify(bgx, lmacid, BGX_GMP_GMI_TXX_APPEND, cfg); 1080 bgx_reg_write(bgx, lmacid, BGX_GMP_GMI_TXX_MIN_PKT, 60 - 1); 1081 } else { 1082 cfg = bgx_reg_read(bgx, lmacid, BGX_SMUX_TX_APPEND); 1083 cfg |= ((1ull << 2) | (1ull << 1)); /* FCS and PAD */ 1084 bgx_reg_modify(bgx, lmacid, BGX_SMUX_TX_APPEND, cfg); 1085 bgx_reg_write(bgx, lmacid, BGX_SMUX_TX_MIN_PKT, 60 + 4); 1086 } 1087 1088 /* actual number of filters available to exact LMAC */ 1089 lmac->dmacs_count = (RX_DMAC_COUNT / bgx->lmac_count); 1090 lmac->dmacs = kcalloc(lmac->dmacs_count, sizeof(*lmac->dmacs), 1091 GFP_KERNEL); 1092 if (!lmac->dmacs) 1093 return -ENOMEM; 1094 1095 /* Enable lmac */ 1096 bgx_reg_modify(bgx, lmacid, BGX_CMRX_CFG, CMR_EN); 1097 1098 /* Restore default cfg, incase low level firmware changed it */ 1099 bgx_reg_write(bgx, lmacid, BGX_CMRX_RX_DMAC_CTL, 0x03); 1100 1101 if ((lmac->lmac_type != BGX_MODE_XFI) && 1102 (lmac->lmac_type != BGX_MODE_XLAUI) && 1103 (lmac->lmac_type != BGX_MODE_40G_KR) && 1104 (lmac->lmac_type != BGX_MODE_10G_KR)) { 1105 if (!lmac->phydev) { 1106 if (lmac->autoneg) { 1107 bgx_reg_write(bgx, lmacid, 1108 BGX_GMP_PCS_LINKX_TIMER, 1109 PCS_LINKX_TIMER_COUNT); 1110 goto poll; 1111 } else { 1112 /* Default to below link speed and duplex */ 1113 lmac->link_up = true; 1114 lmac->last_speed = SPEED_1000; 1115 lmac->last_duplex = DUPLEX_FULL; 1116 bgx_sgmii_change_link_state(lmac); 1117 return 0; 1118 } 1119 } 1120 lmac->phydev->dev_flags = 0; 1121 1122 if (phy_connect_direct(&lmac->netdev, lmac->phydev, 1123 bgx_lmac_handler, 1124 phy_interface_mode(lmac->lmac_type))) 1125 return -ENODEV; 1126 1127 phy_start(lmac->phydev); 1128 return 0; 1129 } 1130 1131poll: 1132 lmac->check_link = alloc_workqueue("check_link", WQ_UNBOUND | 1133 WQ_MEM_RECLAIM, 1); 1134 if (!lmac->check_link) 1135 return -ENOMEM; 1136 INIT_DELAYED_WORK(&lmac->dwork, bgx_poll_for_link); 1137 queue_delayed_work(lmac->check_link, &lmac->dwork, 0); 1138 1139 return 0; 1140} 1141 1142static void bgx_lmac_disable(struct bgx *bgx, u8 lmacid) 1143{ 1144 struct lmac *lmac; 1145 u64 cfg; 1146 1147 lmac = &bgx->lmac[lmacid]; 1148 if (lmac->check_link) { 1149 /* Destroy work queue */ 1150 cancel_delayed_work_sync(&lmac->dwork); 1151 destroy_workqueue(lmac->check_link); 1152 } 1153 1154 /* Disable packet reception */ 1155 cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); 1156 cfg &= ~CMR_PKT_RX_EN; 1157 bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cfg); 1158 1159 /* Give chance for Rx/Tx FIFO to get drained */ 1160 bgx_poll_reg(bgx, lmacid, BGX_CMRX_RX_FIFO_LEN, (u64)0x1FFF, true); 1161 bgx_poll_reg(bgx, lmacid, BGX_CMRX_TX_FIFO_LEN, (u64)0x3FFF, true); 1162 1163 /* Disable packet transmission */ 1164 cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); 1165 cfg &= ~CMR_PKT_TX_EN; 1166 bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cfg); 1167 1168 /* Disable serdes lanes */ 1169 if (!lmac->is_sgmii) 1170 bgx_reg_modify(bgx, lmacid, 1171 BGX_SPUX_CONTROL1, SPU_CTL_LOW_POWER); 1172 else 1173 bgx_reg_modify(bgx, lmacid, 1174 BGX_GMP_PCS_MRX_CTL, PCS_MRX_CTL_PWR_DN); 1175 1176 /* Disable LMAC */ 1177 cfg = bgx_reg_read(bgx, lmacid, BGX_CMRX_CFG); 1178 cfg &= ~CMR_EN; 1179 bgx_reg_write(bgx, lmacid, BGX_CMRX_CFG, cfg); 1180 1181 bgx_flush_dmac_cam_filter(bgx, lmacid); 1182 kfree(lmac->dmacs); 1183 1184 if ((lmac->lmac_type != BGX_MODE_XFI) && 1185 (lmac->lmac_type != BGX_MODE_XLAUI) && 1186 (lmac->lmac_type != BGX_MODE_40G_KR) && 1187 (lmac->lmac_type != BGX_MODE_10G_KR) && lmac->phydev) 1188 phy_disconnect(lmac->phydev); 1189 1190 lmac->phydev = NULL; 1191} 1192 1193static void bgx_init_hw(struct bgx *bgx) 1194{ 1195 int i; 1196 struct lmac *lmac; 1197 1198 bgx_reg_modify(bgx, 0, BGX_CMR_GLOBAL_CFG, CMR_GLOBAL_CFG_FCS_STRIP); 1199 if (bgx_reg_read(bgx, 0, BGX_CMR_BIST_STATUS)) 1200 dev_err(&bgx->pdev->dev, "BGX%d BIST failed\n", bgx->bgx_id); 1201 1202 /* Set lmac type and lane2serdes mapping */ 1203 for (i = 0; i < bgx->lmac_count; i++) { 1204 lmac = &bgx->lmac[i]; 1205 bgx_reg_write(bgx, i, BGX_CMRX_CFG, 1206 (lmac->lmac_type << 8) | lmac->lane_to_sds); 1207 bgx->lmac[i].lmacid_bd = lmac_count; 1208 lmac_count++; 1209 } 1210 1211 bgx_reg_write(bgx, 0, BGX_CMR_TX_LMACS, bgx->lmac_count); 1212 bgx_reg_write(bgx, 0, BGX_CMR_RX_LMACS, bgx->lmac_count); 1213 1214 /* Set the backpressure AND mask */ 1215 for (i = 0; i < bgx->lmac_count; i++) 1216 bgx_reg_modify(bgx, 0, BGX_CMR_CHAN_MSK_AND, 1217 ((1ULL << MAX_BGX_CHANS_PER_LMAC) - 1) << 1218 (i * MAX_BGX_CHANS_PER_LMAC)); 1219 1220 /* Disable all MAC filtering */ 1221 for (i = 0; i < RX_DMAC_COUNT; i++) 1222 bgx_reg_write(bgx, 0, BGX_CMR_RX_DMACX_CAM + (i * 8), 0x00); 1223 1224 /* Disable MAC steering (NCSI traffic) */ 1225 for (i = 0; i < RX_TRAFFIC_STEER_RULE_COUNT; i++) 1226 bgx_reg_write(bgx, 0, BGX_CMR_RX_STEERING + (i * 8), 0x00); 1227} 1228 1229static u8 bgx_get_lane2sds_cfg(struct bgx *bgx, struct lmac *lmac) 1230{ 1231 return (u8)(bgx_reg_read(bgx, lmac->lmacid, BGX_CMRX_CFG) & 0xFF); 1232} 1233 1234static void bgx_print_qlm_mode(struct bgx *bgx, u8 lmacid) 1235{ 1236 struct device *dev = &bgx->pdev->dev; 1237 struct lmac *lmac; 1238 char str[27]; 1239 1240 if (!bgx->is_dlm && lmacid) 1241 return; 1242 1243 lmac = &bgx->lmac[lmacid]; 1244 if (!bgx->is_dlm) 1245 sprintf(str, "BGX%d QLM mode", bgx->bgx_id); 1246 else 1247 sprintf(str, "BGX%d LMAC%d mode", bgx->bgx_id, lmacid); 1248 1249 switch (lmac->lmac_type) { 1250 case BGX_MODE_SGMII: 1251 dev_info(dev, "%s: SGMII\n", (char *)str); 1252 break; 1253 case BGX_MODE_XAUI: 1254 dev_info(dev, "%s: XAUI\n", (char *)str); 1255 break; 1256 case BGX_MODE_RXAUI: 1257 dev_info(dev, "%s: RXAUI\n", (char *)str); 1258 break; 1259 case BGX_MODE_XFI: 1260 if (!lmac->use_training) 1261 dev_info(dev, "%s: XFI\n", (char *)str); 1262 else 1263 dev_info(dev, "%s: 10G_KR\n", (char *)str); 1264 break; 1265 case BGX_MODE_XLAUI: 1266 if (!lmac->use_training) 1267 dev_info(dev, "%s: XLAUI\n", (char *)str); 1268 else 1269 dev_info(dev, "%s: 40G_KR4\n", (char *)str); 1270 break; 1271 case BGX_MODE_QSGMII: 1272 dev_info(dev, "%s: QSGMII\n", (char *)str); 1273 break; 1274 case BGX_MODE_RGMII: 1275 dev_info(dev, "%s: RGMII\n", (char *)str); 1276 break; 1277 case BGX_MODE_INVALID: 1278 /* Nothing to do */ 1279 break; 1280 } 1281} 1282 1283static void lmac_set_lane2sds(struct bgx *bgx, struct lmac *lmac) 1284{ 1285 switch (lmac->lmac_type) { 1286 case BGX_MODE_SGMII: 1287 case BGX_MODE_XFI: 1288 lmac->lane_to_sds = lmac->lmacid; 1289 break; 1290 case BGX_MODE_XAUI: 1291 case BGX_MODE_XLAUI: 1292 case BGX_MODE_RGMII: 1293 lmac->lane_to_sds = 0xE4; 1294 break; 1295 case BGX_MODE_RXAUI: 1296 lmac->lane_to_sds = (lmac->lmacid) ? 0xE : 0x4; 1297 break; 1298 case BGX_MODE_QSGMII: 1299 /* There is no way to determine if DLM0/2 is QSGMII or 1300 * DLM1/3 is configured to QSGMII as bootloader will 1301 * configure all LMACs, so take whatever is configured 1302 * by low level firmware. 1303 */ 1304 lmac->lane_to_sds = bgx_get_lane2sds_cfg(bgx, lmac); 1305 break; 1306 default: 1307 lmac->lane_to_sds = 0; 1308 break; 1309 } 1310} 1311 1312static void lmac_set_training(struct bgx *bgx, struct lmac *lmac, int lmacid) 1313{ 1314 if ((lmac->lmac_type != BGX_MODE_10G_KR) && 1315 (lmac->lmac_type != BGX_MODE_40G_KR)) { 1316 lmac->use_training = false; 1317 return; 1318 } 1319 1320 lmac->use_training = bgx_reg_read(bgx, lmacid, BGX_SPUX_BR_PMD_CRTL) & 1321 SPU_PMD_CRTL_TRAIN_EN; 1322} 1323 1324static void bgx_set_lmac_config(struct bgx *bgx, u8 idx) 1325{ 1326 struct lmac *lmac; 1327 u64 cmr_cfg; 1328 u8 lmac_type; 1329 u8 lane_to_sds; 1330 1331 lmac = &bgx->lmac[idx]; 1332 1333 if (!bgx->is_dlm || bgx->is_rgx) { 1334 /* Read LMAC0 type to figure out QLM mode 1335 * This is configured by low level firmware 1336 */ 1337 cmr_cfg = bgx_reg_read(bgx, 0, BGX_CMRX_CFG); 1338 lmac->lmac_type = (cmr_cfg >> 8) & 0x07; 1339 if (bgx->is_rgx) 1340 lmac->lmac_type = BGX_MODE_RGMII; 1341 lmac_set_training(bgx, lmac, 0); 1342 lmac_set_lane2sds(bgx, lmac); 1343 return; 1344 } 1345 1346 /* For DLMs or SLMs on 80/81/83xx so many lane configurations 1347 * are possible and vary across boards. Also Kernel doesn't have 1348 * any way to identify board type/info and since firmware does, 1349 * just take lmac type and serdes lane config as is. 1350 */ 1351 cmr_cfg = bgx_reg_read(bgx, idx, BGX_CMRX_CFG); 1352 lmac_type = (u8)((cmr_cfg >> 8) & 0x07); 1353 lane_to_sds = (u8)(cmr_cfg & 0xFF); 1354 /* Check if config is reset value */ 1355 if ((lmac_type == 0) && (lane_to_sds == 0xE4)) 1356 lmac->lmac_type = BGX_MODE_INVALID; 1357 else 1358 lmac->lmac_type = lmac_type; 1359 lmac->lane_to_sds = lane_to_sds; 1360 lmac_set_training(bgx, lmac, lmac->lmacid); 1361} 1362 1363static void bgx_get_qlm_mode(struct bgx *bgx) 1364{ 1365 struct lmac *lmac; 1366 u8 idx; 1367 1368 /* Init all LMAC's type to invalid */ 1369 for (idx = 0; idx < bgx->max_lmac; idx++) { 1370 lmac = &bgx->lmac[idx]; 1371 lmac->lmacid = idx; 1372 lmac->lmac_type = BGX_MODE_INVALID; 1373 lmac->use_training = false; 1374 } 1375 1376 /* It is assumed that low level firmware sets this value */ 1377 bgx->lmac_count = bgx_reg_read(bgx, 0, BGX_CMR_RX_LMACS) & 0x7; 1378 if (bgx->lmac_count > bgx->max_lmac) 1379 bgx->lmac_count = bgx->max_lmac; 1380 1381 for (idx = 0; idx < bgx->lmac_count; idx++) { 1382 bgx_set_lmac_config(bgx, idx); 1383 bgx_print_qlm_mode(bgx, idx); 1384 } 1385} 1386 1387#ifdef CONFIG_ACPI 1388 1389static int acpi_get_mac_address(struct device *dev, struct acpi_device *adev, 1390 u8 *dst) 1391{ 1392 u8 mac[ETH_ALEN]; 1393 u8 *addr; 1394 1395 addr = fwnode_get_mac_address(acpi_fwnode_handle(adev), mac, ETH_ALEN); 1396 if (!addr) { 1397 dev_err(dev, "MAC address invalid: %pM\n", mac); 1398 return -EINVAL; 1399 } 1400 1401 dev_info(dev, "MAC address set to: %pM\n", mac); 1402 1403 ether_addr_copy(dst, mac); 1404 return 0; 1405} 1406 1407/* Currently only sets the MAC address. */ 1408static acpi_status bgx_acpi_register_phy(acpi_handle handle, 1409 u32 lvl, void *context, void **rv) 1410{ 1411 struct bgx *bgx = context; 1412 struct device *dev = &bgx->pdev->dev; 1413 struct acpi_device *adev; 1414 1415 if (acpi_bus_get_device(handle, &adev)) 1416 goto out; 1417 1418 acpi_get_mac_address(dev, adev, bgx->lmac[bgx->acpi_lmac_idx].mac); 1419 1420 SET_NETDEV_DEV(&bgx->lmac[bgx->acpi_lmac_idx].netdev, dev); 1421 1422 bgx->lmac[bgx->acpi_lmac_idx].lmacid = bgx->acpi_lmac_idx; 1423 bgx->acpi_lmac_idx++; /* move to next LMAC */ 1424out: 1425 return AE_OK; 1426} 1427 1428static acpi_status bgx_acpi_match_id(acpi_handle handle, u32 lvl, 1429 void *context, void **ret_val) 1430{ 1431 struct acpi_buffer string = { ACPI_ALLOCATE_BUFFER, NULL }; 1432 struct bgx *bgx = context; 1433 char bgx_sel[5]; 1434 1435 snprintf(bgx_sel, 5, "BGX%d", bgx->bgx_id); 1436 if (ACPI_FAILURE(acpi_get_name(handle, ACPI_SINGLE_NAME, &string))) { 1437 pr_warn("Invalid link device\n"); 1438 return AE_OK; 1439 } 1440 1441 if (strncmp(string.pointer, bgx_sel, 4)) { 1442 kfree(string.pointer); 1443 return AE_OK; 1444 } 1445 1446 acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1, 1447 bgx_acpi_register_phy, NULL, bgx, NULL); 1448 1449 kfree(string.pointer); 1450 return AE_CTRL_TERMINATE; 1451} 1452 1453static int bgx_init_acpi_phy(struct bgx *bgx) 1454{ 1455 acpi_get_devices(NULL, bgx_acpi_match_id, bgx, (void **)NULL); 1456 return 0; 1457} 1458 1459#else 1460 1461static int bgx_init_acpi_phy(struct bgx *bgx) 1462{ 1463 return -ENODEV; 1464} 1465 1466#endif /* CONFIG_ACPI */ 1467 1468#if IS_ENABLED(CONFIG_OF_MDIO) 1469 1470static int bgx_init_of_phy(struct bgx *bgx) 1471{ 1472 struct fwnode_handle *fwn; 1473 struct device_node *node = NULL; 1474 u8 lmac = 0; 1475 1476 device_for_each_child_node(&bgx->pdev->dev, fwn) { 1477 struct phy_device *pd; 1478 struct device_node *phy_np; 1479 const char *mac; 1480 1481 /* Should always be an OF node. But if it is not, we 1482 * cannot handle it, so exit the loop. 1483 */ 1484 node = to_of_node(fwn); 1485 if (!node) 1486 break; 1487 1488 mac = of_get_mac_address(node); 1489 if (!IS_ERR(mac)) 1490 ether_addr_copy(bgx->lmac[lmac].mac, mac); 1491 1492 SET_NETDEV_DEV(&bgx->lmac[lmac].netdev, &bgx->pdev->dev); 1493 bgx->lmac[lmac].lmacid = lmac; 1494 1495 phy_np = of_parse_phandle(node, "phy-handle", 0); 1496 /* If there is no phy or defective firmware presents 1497 * this cortina phy, for which there is no driver 1498 * support, ignore it. 1499 */ 1500 if (phy_np && 1501 !of_device_is_compatible(phy_np, "cortina,cs4223-slice")) { 1502 /* Wait until the phy drivers are available */ 1503 pd = of_phy_find_device(phy_np); 1504 if (!pd) 1505 goto defer; 1506 bgx->lmac[lmac].phydev = pd; 1507 } 1508 1509 lmac++; 1510 if (lmac == bgx->max_lmac) { 1511 of_node_put(node); 1512 break; 1513 } 1514 } 1515 return 0; 1516 1517defer: 1518 /* We are bailing out, try not to leak device reference counts 1519 * for phy devices we may have already found. 1520 */ 1521 while (lmac) { 1522 if (bgx->lmac[lmac].phydev) { 1523 put_device(&bgx->lmac[lmac].phydev->mdio.dev); 1524 bgx->lmac[lmac].phydev = NULL; 1525 } 1526 lmac--; 1527 } 1528 of_node_put(node); 1529 return -EPROBE_DEFER; 1530} 1531 1532#else 1533 1534static int bgx_init_of_phy(struct bgx *bgx) 1535{ 1536 return -ENODEV; 1537} 1538 1539#endif /* CONFIG_OF_MDIO */ 1540 1541static int bgx_init_phy(struct bgx *bgx) 1542{ 1543 if (!acpi_disabled) 1544 return bgx_init_acpi_phy(bgx); 1545 1546 return bgx_init_of_phy(bgx); 1547} 1548 1549static irqreturn_t bgx_intr_handler(int irq, void *data) 1550{ 1551 struct bgx *bgx = (struct bgx *)data; 1552 u64 status, val; 1553 int lmac; 1554 1555 for (lmac = 0; lmac < bgx->lmac_count; lmac++) { 1556 status = bgx_reg_read(bgx, lmac, BGX_GMP_GMI_TXX_INT); 1557 if (status & GMI_TXX_INT_UNDFLW) { 1558 pci_err(bgx->pdev, "BGX%d lmac%d UNDFLW\n", 1559 bgx->bgx_id, lmac); 1560 val = bgx_reg_read(bgx, lmac, BGX_CMRX_CFG); 1561 val &= ~CMR_EN; 1562 bgx_reg_write(bgx, lmac, BGX_CMRX_CFG, val); 1563 val |= CMR_EN; 1564 bgx_reg_write(bgx, lmac, BGX_CMRX_CFG, val); 1565 } 1566 /* clear interrupts */ 1567 bgx_reg_write(bgx, lmac, BGX_GMP_GMI_TXX_INT, status); 1568 } 1569 1570 return IRQ_HANDLED; 1571} 1572 1573static void bgx_register_intr(struct pci_dev *pdev) 1574{ 1575 struct bgx *bgx = pci_get_drvdata(pdev); 1576 int ret; 1577 1578 ret = pci_alloc_irq_vectors(pdev, BGX_LMAC_VEC_OFFSET, 1579 BGX_LMAC_VEC_OFFSET, PCI_IRQ_ALL_TYPES); 1580 if (ret < 0) { 1581 pci_err(pdev, "Req for #%d msix vectors failed\n", 1582 BGX_LMAC_VEC_OFFSET); 1583 return; 1584 } 1585 ret = pci_request_irq(pdev, GMPX_GMI_TX_INT, bgx_intr_handler, NULL, 1586 bgx, "BGX%d", bgx->bgx_id); 1587 if (ret) 1588 pci_free_irq(pdev, GMPX_GMI_TX_INT, bgx); 1589} 1590 1591static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 1592{ 1593 int err; 1594 struct device *dev = &pdev->dev; 1595 struct bgx *bgx = NULL; 1596 u8 lmac; 1597 u16 sdevid; 1598 1599 bgx = devm_kzalloc(dev, sizeof(*bgx), GFP_KERNEL); 1600 if (!bgx) 1601 return -ENOMEM; 1602 bgx->pdev = pdev; 1603 1604 pci_set_drvdata(pdev, bgx); 1605 1606 err = pcim_enable_device(pdev); 1607 if (err) { 1608 dev_err(dev, "Failed to enable PCI device\n"); 1609 pci_set_drvdata(pdev, NULL); 1610 return err; 1611 } 1612 1613 err = pci_request_regions(pdev, DRV_NAME); 1614 if (err) { 1615 dev_err(dev, "PCI request regions failed 0x%x\n", err); 1616 goto err_disable_device; 1617 } 1618 1619 /* MAP configuration registers */ 1620 bgx->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0); 1621 if (!bgx->reg_base) { 1622 dev_err(dev, "BGX: Cannot map CSR memory space, aborting\n"); 1623 err = -ENOMEM; 1624 goto err_release_regions; 1625 } 1626 1627 set_max_bgx_per_node(pdev); 1628 1629 pci_read_config_word(pdev, PCI_DEVICE_ID, &sdevid); 1630 if (sdevid != PCI_DEVICE_ID_THUNDER_RGX) { 1631 bgx->bgx_id = (pci_resource_start(pdev, 1632 PCI_CFG_REG_BAR_NUM) >> 24) & BGX_ID_MASK; 1633 bgx->bgx_id += nic_get_node_id(pdev) * max_bgx_per_node; 1634 bgx->max_lmac = MAX_LMAC_PER_BGX; 1635 bgx_vnic[bgx->bgx_id] = bgx; 1636 } else { 1637 bgx->is_rgx = true; 1638 bgx->max_lmac = 1; 1639 bgx->bgx_id = MAX_BGX_PER_CN81XX - 1; 1640 bgx_vnic[bgx->bgx_id] = bgx; 1641 xcv_init_hw(); 1642 } 1643 1644 /* On 81xx all are DLMs and on 83xx there are 3 BGX QLMs and one 1645 * BGX i.e BGX2 can be split across 2 DLMs. 1646 */ 1647 pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &sdevid); 1648 if ((sdevid == PCI_SUBSYS_DEVID_81XX_BGX) || 1649 ((sdevid == PCI_SUBSYS_DEVID_83XX_BGX) && (bgx->bgx_id == 2))) 1650 bgx->is_dlm = true; 1651 1652 bgx_get_qlm_mode(bgx); 1653 1654 err = bgx_init_phy(bgx); 1655 if (err) 1656 goto err_enable; 1657 1658 bgx_init_hw(bgx); 1659 1660 bgx_register_intr(pdev); 1661 1662 /* Enable all LMACs */ 1663 for (lmac = 0; lmac < bgx->lmac_count; lmac++) { 1664 err = bgx_lmac_enable(bgx, lmac); 1665 if (err) { 1666 dev_err(dev, "BGX%d failed to enable lmac%d\n", 1667 bgx->bgx_id, lmac); 1668 while (lmac) 1669 bgx_lmac_disable(bgx, --lmac); 1670 goto err_enable; 1671 } 1672 } 1673 1674 return 0; 1675 1676err_enable: 1677 bgx_vnic[bgx->bgx_id] = NULL; 1678 pci_free_irq(pdev, GMPX_GMI_TX_INT, bgx); 1679err_release_regions: 1680 pci_release_regions(pdev); 1681err_disable_device: 1682 pci_disable_device(pdev); 1683 pci_set_drvdata(pdev, NULL); 1684 return err; 1685} 1686 1687static void bgx_remove(struct pci_dev *pdev) 1688{ 1689 struct bgx *bgx = pci_get_drvdata(pdev); 1690 u8 lmac; 1691 1692 /* Disable all LMACs */ 1693 for (lmac = 0; lmac < bgx->lmac_count; lmac++) 1694 bgx_lmac_disable(bgx, lmac); 1695 1696 pci_free_irq(pdev, GMPX_GMI_TX_INT, bgx); 1697 1698 bgx_vnic[bgx->bgx_id] = NULL; 1699 pci_release_regions(pdev); 1700 pci_disable_device(pdev); 1701 pci_set_drvdata(pdev, NULL); 1702} 1703 1704static struct pci_driver bgx_driver = { 1705 .name = DRV_NAME, 1706 .id_table = bgx_id_table, 1707 .probe = bgx_probe, 1708 .remove = bgx_remove, 1709}; 1710 1711static int __init bgx_init_module(void) 1712{ 1713 pr_info("%s, ver %s\n", DRV_NAME, DRV_VERSION); 1714 1715 return pci_register_driver(&bgx_driver); 1716} 1717 1718static void __exit bgx_cleanup_module(void) 1719{ 1720 pci_unregister_driver(&bgx_driver); 1721} 1722 1723module_init(bgx_init_module); 1724module_exit(bgx_cleanup_module); 1725