1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2009-2017, The Linux Foundation. All rights reserved.
4 * Copyright (c) 2017-2019, Linaro Ltd.
5 */
6
7#include <linux/debugfs.h>
8#include <linux/err.h>
9#include <linux/module.h>
10#include <linux/platform_device.h>
11#include <linux/random.h>
12#include <linux/slab.h>
13#include <linux/soc/qcom/smem.h>
14#include <linux/string.h>
15#include <linux/sys_soc.h>
16#include <linux/types.h>
17
18/*
19 * SoC version type with major number in the upper 16 bits and minor
20 * number in the lower 16 bits.
21 */
22#define SOCINFO_MAJOR(ver) (((ver) >> 16) & 0xffff)
23#define SOCINFO_MINOR(ver) ((ver) & 0xffff)
24#define SOCINFO_VERSION(maj, min)  ((((maj) & 0xffff) << 16)|((min) & 0xffff))
25
26#define SMEM_SOCINFO_BUILD_ID_LENGTH           32
27#define SMEM_SOCINFO_CHIP_ID_LENGTH            32
28
29/*
30 * SMEM item id, used to acquire handles to respective
31 * SMEM region.
32 */
33#define SMEM_HW_SW_BUILD_ID            137
34
35#ifdef CONFIG_DEBUG_FS
36#define SMEM_IMAGE_VERSION_BLOCKS_COUNT        32
37#define SMEM_IMAGE_VERSION_SIZE                4096
38#define SMEM_IMAGE_VERSION_NAME_SIZE           75
39#define SMEM_IMAGE_VERSION_VARIANT_SIZE        20
40#define SMEM_IMAGE_VERSION_OEM_SIZE            32
41
42/*
43 * SMEM Image table indices
44 */
45#define SMEM_IMAGE_TABLE_BOOT_INDEX     0
46#define SMEM_IMAGE_TABLE_TZ_INDEX       1
47#define SMEM_IMAGE_TABLE_RPM_INDEX      3
48#define SMEM_IMAGE_TABLE_APPS_INDEX     10
49#define SMEM_IMAGE_TABLE_MPSS_INDEX     11
50#define SMEM_IMAGE_TABLE_ADSP_INDEX     12
51#define SMEM_IMAGE_TABLE_CNSS_INDEX     13
52#define SMEM_IMAGE_TABLE_VIDEO_INDEX    14
53#define SMEM_IMAGE_VERSION_TABLE       469
54
55/*
56 * SMEM Image table names
57 */
58static const char *const socinfo_image_names[] = {
59	[SMEM_IMAGE_TABLE_ADSP_INDEX] = "adsp",
60	[SMEM_IMAGE_TABLE_APPS_INDEX] = "apps",
61	[SMEM_IMAGE_TABLE_BOOT_INDEX] = "boot",
62	[SMEM_IMAGE_TABLE_CNSS_INDEX] = "cnss",
63	[SMEM_IMAGE_TABLE_MPSS_INDEX] = "mpss",
64	[SMEM_IMAGE_TABLE_RPM_INDEX] = "rpm",
65	[SMEM_IMAGE_TABLE_TZ_INDEX] = "tz",
66	[SMEM_IMAGE_TABLE_VIDEO_INDEX] = "video",
67};
68
69static const char *const pmic_models[] = {
70	[0]  = "Unknown PMIC model",
71	[9]  = "PM8994",
72	[11] = "PM8916",
73	[13] = "PM8058",
74	[14] = "PM8028",
75	[15] = "PM8901",
76	[16] = "PM8027",
77	[17] = "ISL9519",
78	[18] = "PM8921",
79	[19] = "PM8018",
80	[20] = "PM8015",
81	[21] = "PM8014",
82	[22] = "PM8821",
83	[23] = "PM8038",
84	[24] = "PM8922",
85	[25] = "PM8917",
86};
87#endif /* CONFIG_DEBUG_FS */
88
89/* Socinfo SMEM item structure */
90struct socinfo {
91	__le32 fmt;
92	__le32 id;
93	__le32 ver;
94	char build_id[SMEM_SOCINFO_BUILD_ID_LENGTH];
95	/* Version 2 */
96	__le32 raw_id;
97	__le32 raw_ver;
98	/* Version 3 */
99	__le32 hw_plat;
100	/* Version 4 */
101	__le32 plat_ver;
102	/* Version 5 */
103	__le32 accessory_chip;
104	/* Version 6 */
105	__le32 hw_plat_subtype;
106	/* Version 7 */
107	__le32 pmic_model;
108	__le32 pmic_die_rev;
109	/* Version 8 */
110	__le32 pmic_model_1;
111	__le32 pmic_die_rev_1;
112	__le32 pmic_model_2;
113	__le32 pmic_die_rev_2;
114	/* Version 9 */
115	__le32 foundry_id;
116	/* Version 10 */
117	__le32 serial_num;
118	/* Version 11 */
119	__le32 num_pmics;
120	__le32 pmic_array_offset;
121	/* Version 12 */
122	__le32 chip_family;
123	__le32 raw_device_family;
124	__le32 raw_device_num;
125	/* Version 13 */
126	__le32 nproduct_id;
127	char chip_id[SMEM_SOCINFO_CHIP_ID_LENGTH];
128	/* Version 14 */
129	__le32 num_clusters;
130	__le32 ncluster_array_offset;
131	__le32 num_defective_parts;
132	__le32 ndefective_parts_array_offset;
133	/* Version 15 */
134	__le32 nmodem_supported;
135};
136
137#ifdef CONFIG_DEBUG_FS
138struct socinfo_params {
139	u32 raw_device_family;
140	u32 hw_plat_subtype;
141	u32 accessory_chip;
142	u32 raw_device_num;
143	u32 chip_family;
144	u32 foundry_id;
145	u32 plat_ver;
146	u32 raw_ver;
147	u32 hw_plat;
148	u32 fmt;
149	u32 nproduct_id;
150	u32 num_clusters;
151	u32 ncluster_array_offset;
152	u32 num_defective_parts;
153	u32 ndefective_parts_array_offset;
154	u32 nmodem_supported;
155};
156
157struct smem_image_version {
158	char name[SMEM_IMAGE_VERSION_NAME_SIZE];
159	char variant[SMEM_IMAGE_VERSION_VARIANT_SIZE];
160	char pad;
161	char oem[SMEM_IMAGE_VERSION_OEM_SIZE];
162};
163#endif /* CONFIG_DEBUG_FS */
164
165struct qcom_socinfo {
166	struct soc_device *soc_dev;
167	struct soc_device_attribute attr;
168#ifdef CONFIG_DEBUG_FS
169	struct dentry *dbg_root;
170	struct socinfo_params info;
171#endif /* CONFIG_DEBUG_FS */
172};
173
174struct soc_id {
175	unsigned int id;
176	const char *name;
177};
178
179static const struct soc_id soc_id[] = {
180	{ 87, "MSM8960" },
181	{ 109, "APQ8064" },
182	{ 122, "MSM8660A" },
183	{ 123, "MSM8260A" },
184	{ 124, "APQ8060A" },
185	{ 126, "MSM8974" },
186	{ 130, "MPQ8064" },
187	{ 138, "MSM8960AB" },
188	{ 139, "APQ8060AB" },
189	{ 140, "MSM8260AB" },
190	{ 141, "MSM8660AB" },
191	{ 178, "APQ8084" },
192	{ 184, "APQ8074" },
193	{ 185, "MSM8274" },
194	{ 186, "MSM8674" },
195	{ 194, "MSM8974PRO" },
196	{ 206, "MSM8916" },
197	{ 207, "MSM8994" },
198	{ 208, "APQ8074-AA" },
199	{ 209, "APQ8074-AB" },
200	{ 210, "APQ8074PRO" },
201	{ 211, "MSM8274-AA" },
202	{ 212, "MSM8274-AB" },
203	{ 213, "MSM8274PRO" },
204	{ 214, "MSM8674-AA" },
205	{ 215, "MSM8674-AB" },
206	{ 216, "MSM8674PRO" },
207	{ 217, "MSM8974-AA" },
208	{ 218, "MSM8974-AB" },
209	{ 233, "MSM8936" },
210	{ 239, "MSM8939" },
211	{ 240, "APQ8036" },
212	{ 241, "APQ8039" },
213	{ 246, "MSM8996" },
214	{ 247, "APQ8016" },
215	{ 248, "MSM8216" },
216	{ 249, "MSM8116" },
217	{ 250, "MSM8616" },
218	{ 251, "MSM8992" },
219	{ 253, "APQ8094" },
220	{ 291, "APQ8096" },
221	{ 305, "MSM8996SG" },
222	{ 310, "MSM8996AU" },
223	{ 311, "APQ8096AU" },
224	{ 312, "APQ8096SG" },
225	{ 318, "SDM630" },
226	{ 321, "SDM845" },
227	{ 341, "SDA845" },
228	{ 356, "SM8250" },
229	{ 402, "IPQ6018" },
230	{ 425, "SC7180" },
231};
232
233static const char *socinfo_machine(struct device *dev, unsigned int id)
234{
235	int idx;
236
237	for (idx = 0; idx < ARRAY_SIZE(soc_id); idx++) {
238		if (soc_id[idx].id == id)
239			return soc_id[idx].name;
240	}
241
242	return NULL;
243}
244
245#ifdef CONFIG_DEBUG_FS
246
247#define QCOM_OPEN(name, _func)						\
248static int qcom_open_##name(struct inode *inode, struct file *file)	\
249{									\
250	return single_open(file, _func, inode->i_private);		\
251}									\
252									\
253static const struct file_operations qcom_ ##name## _ops = {		\
254	.open = qcom_open_##name,					\
255	.read = seq_read,						\
256	.llseek = seq_lseek,						\
257	.release = single_release,					\
258}
259
260#define DEBUGFS_ADD(info, name)						\
261	debugfs_create_file(__stringify(name), 0400,			\
262			    qcom_socinfo->dbg_root,			\
263			    info, &qcom_ ##name## _ops)
264
265
266static int qcom_show_build_id(struct seq_file *seq, void *p)
267{
268	struct socinfo *socinfo = seq->private;
269
270	seq_printf(seq, "%s\n", socinfo->build_id);
271
272	return 0;
273}
274
275static int qcom_show_pmic_model(struct seq_file *seq, void *p)
276{
277	struct socinfo *socinfo = seq->private;
278	int model = SOCINFO_MINOR(le32_to_cpu(socinfo->pmic_model));
279
280	if (model < 0)
281		return -EINVAL;
282
283	if (model < ARRAY_SIZE(pmic_models) && pmic_models[model])
284		seq_printf(seq, "%s\n", pmic_models[model]);
285	else
286		seq_printf(seq, "unknown (%d)\n", model);
287
288	return 0;
289}
290
291static int qcom_show_pmic_die_revision(struct seq_file *seq, void *p)
292{
293	struct socinfo *socinfo = seq->private;
294
295	seq_printf(seq, "%u.%u\n",
296		   SOCINFO_MAJOR(le32_to_cpu(socinfo->pmic_die_rev)),
297		   SOCINFO_MINOR(le32_to_cpu(socinfo->pmic_die_rev)));
298
299	return 0;
300}
301
302static int qcom_show_chip_id(struct seq_file *seq, void *p)
303{
304	struct socinfo *socinfo = seq->private;
305
306	seq_printf(seq, "%s\n", socinfo->chip_id);
307
308	return 0;
309}
310
311QCOM_OPEN(build_id, qcom_show_build_id);
312QCOM_OPEN(pmic_model, qcom_show_pmic_model);
313QCOM_OPEN(pmic_die_rev, qcom_show_pmic_die_revision);
314QCOM_OPEN(chip_id, qcom_show_chip_id);
315
316#define DEFINE_IMAGE_OPS(type)					\
317static int show_image_##type(struct seq_file *seq, void *p)		  \
318{								  \
319	struct smem_image_version *image_version = seq->private;  \
320	seq_puts(seq, image_version->type);			  \
321	seq_putc(seq, '\n');					  \
322	return 0;						  \
323}								  \
324static int open_image_##type(struct inode *inode, struct file *file)	  \
325{									  \
326	return single_open(file, show_image_##type, inode->i_private); \
327}									  \
328									  \
329static const struct file_operations qcom_image_##type##_ops = {	  \
330	.open = open_image_##type,					  \
331	.read = seq_read,						  \
332	.llseek = seq_lseek,						  \
333	.release = single_release,					  \
334}
335
336DEFINE_IMAGE_OPS(name);
337DEFINE_IMAGE_OPS(variant);
338DEFINE_IMAGE_OPS(oem);
339
340static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
341				 struct socinfo *info)
342{
343	struct smem_image_version *versions;
344	struct dentry *dentry;
345	size_t size;
346	int i;
347
348	qcom_socinfo->dbg_root = debugfs_create_dir("qcom_socinfo", NULL);
349
350	qcom_socinfo->info.fmt = __le32_to_cpu(info->fmt);
351
352	debugfs_create_x32("info_fmt", 0400, qcom_socinfo->dbg_root,
353			   &qcom_socinfo->info.fmt);
354
355	switch (qcom_socinfo->info.fmt) {
356	case SOCINFO_VERSION(0, 15):
357		qcom_socinfo->info.nmodem_supported = __le32_to_cpu(info->nmodem_supported);
358
359		debugfs_create_u32("nmodem_supported", 0400, qcom_socinfo->dbg_root,
360				   &qcom_socinfo->info.nmodem_supported);
361		fallthrough;
362	case SOCINFO_VERSION(0, 14):
363		qcom_socinfo->info.num_clusters = __le32_to_cpu(info->num_clusters);
364		qcom_socinfo->info.ncluster_array_offset = __le32_to_cpu(info->ncluster_array_offset);
365		qcom_socinfo->info.num_defective_parts = __le32_to_cpu(info->num_defective_parts);
366		qcom_socinfo->info.ndefective_parts_array_offset = __le32_to_cpu(info->ndefective_parts_array_offset);
367
368		debugfs_create_u32("num_clusters", 0400, qcom_socinfo->dbg_root,
369				   &qcom_socinfo->info.num_clusters);
370		debugfs_create_u32("ncluster_array_offset", 0400, qcom_socinfo->dbg_root,
371				   &qcom_socinfo->info.ncluster_array_offset);
372		debugfs_create_u32("num_defective_parts", 0400, qcom_socinfo->dbg_root,
373				   &qcom_socinfo->info.num_defective_parts);
374		debugfs_create_u32("ndefective_parts_array_offset", 0400, qcom_socinfo->dbg_root,
375				   &qcom_socinfo->info.ndefective_parts_array_offset);
376		fallthrough;
377	case SOCINFO_VERSION(0, 13):
378		qcom_socinfo->info.nproduct_id = __le32_to_cpu(info->nproduct_id);
379
380		debugfs_create_u32("nproduct_id", 0400, qcom_socinfo->dbg_root,
381				   &qcom_socinfo->info.nproduct_id);
382		DEBUGFS_ADD(info, chip_id);
383		fallthrough;
384	case SOCINFO_VERSION(0, 12):
385		qcom_socinfo->info.chip_family =
386			__le32_to_cpu(info->chip_family);
387		qcom_socinfo->info.raw_device_family =
388			__le32_to_cpu(info->raw_device_family);
389		qcom_socinfo->info.raw_device_num =
390			__le32_to_cpu(info->raw_device_num);
391
392		debugfs_create_x32("chip_family", 0400, qcom_socinfo->dbg_root,
393				   &qcom_socinfo->info.chip_family);
394		debugfs_create_x32("raw_device_family", 0400,
395				   qcom_socinfo->dbg_root,
396				   &qcom_socinfo->info.raw_device_family);
397		debugfs_create_x32("raw_device_number", 0400,
398				   qcom_socinfo->dbg_root,
399				   &qcom_socinfo->info.raw_device_num);
400		fallthrough;
401	case SOCINFO_VERSION(0, 11):
402	case SOCINFO_VERSION(0, 10):
403	case SOCINFO_VERSION(0, 9):
404		qcom_socinfo->info.foundry_id = __le32_to_cpu(info->foundry_id);
405
406		debugfs_create_u32("foundry_id", 0400, qcom_socinfo->dbg_root,
407				   &qcom_socinfo->info.foundry_id);
408		fallthrough;
409	case SOCINFO_VERSION(0, 8):
410	case SOCINFO_VERSION(0, 7):
411		DEBUGFS_ADD(info, pmic_model);
412		DEBUGFS_ADD(info, pmic_die_rev);
413		fallthrough;
414	case SOCINFO_VERSION(0, 6):
415		qcom_socinfo->info.hw_plat_subtype =
416			__le32_to_cpu(info->hw_plat_subtype);
417
418		debugfs_create_u32("hardware_platform_subtype", 0400,
419				   qcom_socinfo->dbg_root,
420				   &qcom_socinfo->info.hw_plat_subtype);
421		fallthrough;
422	case SOCINFO_VERSION(0, 5):
423		qcom_socinfo->info.accessory_chip =
424			__le32_to_cpu(info->accessory_chip);
425
426		debugfs_create_u32("accessory_chip", 0400,
427				   qcom_socinfo->dbg_root,
428				   &qcom_socinfo->info.accessory_chip);
429		fallthrough;
430	case SOCINFO_VERSION(0, 4):
431		qcom_socinfo->info.plat_ver = __le32_to_cpu(info->plat_ver);
432
433		debugfs_create_u32("platform_version", 0400,
434				   qcom_socinfo->dbg_root,
435				   &qcom_socinfo->info.plat_ver);
436		fallthrough;
437	case SOCINFO_VERSION(0, 3):
438		qcom_socinfo->info.hw_plat = __le32_to_cpu(info->hw_plat);
439
440		debugfs_create_u32("hardware_platform", 0400,
441				   qcom_socinfo->dbg_root,
442				   &qcom_socinfo->info.hw_plat);
443		fallthrough;
444	case SOCINFO_VERSION(0, 2):
445		qcom_socinfo->info.raw_ver  = __le32_to_cpu(info->raw_ver);
446
447		debugfs_create_u32("raw_version", 0400, qcom_socinfo->dbg_root,
448				   &qcom_socinfo->info.raw_ver);
449		fallthrough;
450	case SOCINFO_VERSION(0, 1):
451		DEBUGFS_ADD(info, build_id);
452		break;
453	}
454
455	versions = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_IMAGE_VERSION_TABLE,
456				 &size);
457
458	for (i = 0; i < ARRAY_SIZE(socinfo_image_names); i++) {
459		if (!socinfo_image_names[i])
460			continue;
461
462		dentry = debugfs_create_dir(socinfo_image_names[i],
463					    qcom_socinfo->dbg_root);
464		debugfs_create_file("name", 0400, dentry, &versions[i],
465				    &qcom_image_name_ops);
466		debugfs_create_file("variant", 0400, dentry, &versions[i],
467				    &qcom_image_variant_ops);
468		debugfs_create_file("oem", 0400, dentry, &versions[i],
469				    &qcom_image_oem_ops);
470	}
471}
472
473static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo)
474{
475	debugfs_remove_recursive(qcom_socinfo->dbg_root);
476}
477#else
478static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
479				 struct socinfo *info)
480{
481}
482static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo) {  }
483#endif /* CONFIG_DEBUG_FS */
484
485static int qcom_socinfo_probe(struct platform_device *pdev)
486{
487	struct qcom_socinfo *qs;
488	struct socinfo *info;
489	size_t item_size;
490
491	info = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_HW_SW_BUILD_ID,
492			      &item_size);
493	if (IS_ERR(info)) {
494		dev_err(&pdev->dev, "Couldn't find socinfo\n");
495		return PTR_ERR(info);
496	}
497
498	qs = devm_kzalloc(&pdev->dev, sizeof(*qs), GFP_KERNEL);
499	if (!qs)
500		return -ENOMEM;
501
502	qs->attr.family = "Snapdragon";
503	qs->attr.machine = socinfo_machine(&pdev->dev,
504					   le32_to_cpu(info->id));
505	qs->attr.soc_id = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%u",
506					 le32_to_cpu(info->id));
507	qs->attr.revision = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%u.%u",
508					   SOCINFO_MAJOR(le32_to_cpu(info->ver)),
509					   SOCINFO_MINOR(le32_to_cpu(info->ver)));
510	if (offsetof(struct socinfo, serial_num) <= item_size)
511		qs->attr.serial_number = devm_kasprintf(&pdev->dev, GFP_KERNEL,
512							"%u",
513							le32_to_cpu(info->serial_num));
514
515	qs->soc_dev = soc_device_register(&qs->attr);
516	if (IS_ERR(qs->soc_dev))
517		return PTR_ERR(qs->soc_dev);
518
519	socinfo_debugfs_init(qs, info);
520
521	/* Feed the soc specific unique data into entropy pool */
522	add_device_randomness(info, item_size);
523
524	platform_set_drvdata(pdev, qs);
525
526	return 0;
527}
528
529static int qcom_socinfo_remove(struct platform_device *pdev)
530{
531	struct qcom_socinfo *qs = platform_get_drvdata(pdev);
532
533	soc_device_unregister(qs->soc_dev);
534
535	socinfo_debugfs_exit(qs);
536
537	return 0;
538}
539
540static struct platform_driver qcom_socinfo_driver = {
541	.probe = qcom_socinfo_probe,
542	.remove = qcom_socinfo_remove,
543	.driver  = {
544		.name = "qcom-socinfo",
545	},
546};
547
548module_platform_driver(qcom_socinfo_driver);
549
550MODULE_DESCRIPTION("Qualcomm SoCinfo driver");
551MODULE_LICENSE("GPL v2");
552MODULE_ALIAS("platform:qcom-socinfo");
553