1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * skl-sst-utils.c - SKL sst utils functions
4 *
5 * Copyright (C) 2016 Intel Corp
6 */
7
8 #include <linux/device.h>
9 #include <linux/slab.h>
10 #include <linux/uuid.h>
11 #include "../common/sst-dsp.h"
12 #include "../common/sst-dsp-priv.h"
13 #include "skl.h"
14
15 #define DEFAULT_HASH_SHA256_LEN 32
16
17 /* FW Extended Manifest Header id = $AE1 */
18 #define SKL_EXT_MANIFEST_HEADER_MAGIC 0x31454124
19
20 union seg_flags {
21 u32 ul;
22 struct {
23 u32 contents : 1;
24 u32 alloc : 1;
25 u32 load : 1;
26 u32 read_only : 1;
27 u32 code : 1;
28 u32 data : 1;
29 u32 _rsvd0 : 2;
30 u32 type : 4;
31 u32 _rsvd1 : 4;
32 u32 length : 16;
33 } r;
34 } __packed;
35
36 struct segment_desc {
37 union seg_flags flags;
38 u32 v_base_addr;
39 u32 file_offset;
40 };
41
42 struct module_type {
43 u32 load_type : 4;
44 u32 auto_start : 1;
45 u32 domain_ll : 1;
46 u32 domain_dp : 1;
47 u32 rsvd : 25;
48 } __packed;
49
50 struct adsp_module_entry {
51 u32 struct_id;
52 u8 name[8];
53 u8 uuid[16];
54 struct module_type type;
55 u8 hash1[DEFAULT_HASH_SHA256_LEN];
56 u32 entry_point;
57 u16 cfg_offset;
58 u16 cfg_count;
59 u32 affinity_mask;
60 u16 instance_max_count;
61 u16 instance_bss_size;
62 struct segment_desc segments[3];
63 } __packed;
64
65 struct adsp_fw_hdr {
66 u32 id;
67 u32 len;
68 u8 name[8];
69 u32 preload_page_count;
70 u32 fw_image_flags;
71 u32 feature_mask;
72 u16 major;
73 u16 minor;
74 u16 hotfix;
75 u16 build;
76 u32 num_modules;
77 u32 hw_buf_base;
78 u32 hw_buf_length;
79 u32 load_offset;
80 } __packed;
81
82 struct skl_ext_manifest_hdr {
83 u32 id;
84 u32 len;
85 u16 version_major;
86 u16 version_minor;
87 u32 entries;
88 };
89
skl_get_pvtid_map(struct uuid_module * module,int instance_id)90 static int skl_get_pvtid_map(struct uuid_module *module, int instance_id)
91 {
92 int pvt_id;
93
94 for (pvt_id = 0; pvt_id < module->max_instance; pvt_id++) {
95 if (module->instance_id[pvt_id] == instance_id)
96 return pvt_id;
97 }
98 return -EINVAL;
99 }
100
skl_get_pvt_instance_id_map(struct skl_dev * skl,int module_id,int instance_id)101 int skl_get_pvt_instance_id_map(struct skl_dev *skl,
102 int module_id, int instance_id)
103 {
104 struct uuid_module *module;
105
106 list_for_each_entry(module, &skl->uuid_list, list) {
107 if (module->id == module_id)
108 return skl_get_pvtid_map(module, instance_id);
109 }
110
111 return -EINVAL;
112 }
113 EXPORT_SYMBOL_GPL(skl_get_pvt_instance_id_map);
114
skl_getid_32(struct uuid_module * module,u64 * val,int word1_mask,int word2_mask)115 static inline int skl_getid_32(struct uuid_module *module, u64 *val,
116 int word1_mask, int word2_mask)
117 {
118 int index, max_inst, pvt_id;
119 u32 mask_val;
120
121 max_inst = module->max_instance;
122 mask_val = (u32)(*val >> word1_mask);
123
124 if (mask_val != 0xffffffff) {
125 index = ffz(mask_val);
126 pvt_id = index + word1_mask + word2_mask;
127 if (pvt_id <= (max_inst - 1)) {
128 *val |= 1ULL << (index + word1_mask);
129 return pvt_id;
130 }
131 }
132
133 return -EINVAL;
134 }
135
skl_pvtid_128(struct uuid_module * module)136 static inline int skl_pvtid_128(struct uuid_module *module)
137 {
138 int j, i, word1_mask, word2_mask = 0, pvt_id;
139
140 for (j = 0; j < MAX_INSTANCE_BUFF; j++) {
141 word1_mask = 0;
142
143 for (i = 0; i < 2; i++) {
144 pvt_id = skl_getid_32(module, &module->pvt_id[j],
145 word1_mask, word2_mask);
146 if (pvt_id >= 0)
147 return pvt_id;
148
149 word1_mask += 32;
150 if ((word1_mask + word2_mask) >= module->max_instance)
151 return -EINVAL;
152 }
153
154 word2_mask += 64;
155 if (word2_mask >= module->max_instance)
156 return -EINVAL;
157 }
158
159 return -EINVAL;
160 }
161
162 /**
163 * skl_get_pvt_id: generate a private id for use as module id
164 *
165 * @skl: driver context
166 * @uuid_mod: module's uuid
167 * @instance_id: module's instance id
168 *
169 * This generates a 128 bit private unique id for a module TYPE so that
170 * module instance is unique
171 */
skl_get_pvt_id(struct skl_dev * skl,guid_t * uuid_mod,int instance_id)172 int skl_get_pvt_id(struct skl_dev *skl, guid_t *uuid_mod, int instance_id)
173 {
174 struct uuid_module *module;
175 int pvt_id;
176
177 list_for_each_entry(module, &skl->uuid_list, list) {
178 if (guid_equal(uuid_mod, &module->uuid)) {
179
180 pvt_id = skl_pvtid_128(module);
181 if (pvt_id >= 0) {
182 module->instance_id[pvt_id] = instance_id;
183
184 return pvt_id;
185 }
186 }
187 }
188
189 return -EINVAL;
190 }
191 EXPORT_SYMBOL_GPL(skl_get_pvt_id);
192
193 /**
194 * skl_put_pvt_id: free up the private id allocated
195 *
196 * @skl: driver context
197 * @uuid_mod: module's uuid
198 * @pvt_id: module pvt id
199 *
200 * This frees a 128 bit private unique id previously generated
201 */
skl_put_pvt_id(struct skl_dev * skl,guid_t * uuid_mod,int * pvt_id)202 int skl_put_pvt_id(struct skl_dev *skl, guid_t *uuid_mod, int *pvt_id)
203 {
204 int i;
205 struct uuid_module *module;
206
207 list_for_each_entry(module, &skl->uuid_list, list) {
208 if (guid_equal(uuid_mod, &module->uuid)) {
209
210 if (*pvt_id != 0)
211 i = (*pvt_id) / 64;
212 else
213 i = 0;
214
215 module->pvt_id[i] &= ~(1 << (*pvt_id));
216 *pvt_id = -1;
217 return 0;
218 }
219 }
220
221 return -EINVAL;
222 }
223 EXPORT_SYMBOL_GPL(skl_put_pvt_id);
224
225 /*
226 * Parse the firmware binary to get the UUID, module id
227 * and loadable flags
228 */
snd_skl_parse_uuids(struct sst_dsp * ctx,const struct firmware * fw,unsigned int offset,int index)229 int snd_skl_parse_uuids(struct sst_dsp *ctx, const struct firmware *fw,
230 unsigned int offset, int index)
231 {
232 struct adsp_fw_hdr *adsp_hdr;
233 struct adsp_module_entry *mod_entry;
234 int i, num_entry, size;
235 const char *buf;
236 struct skl_dev *skl = ctx->thread_context;
237 struct uuid_module *module;
238 struct firmware stripped_fw;
239 unsigned int safe_file;
240 int ret;
241
242 /* Get the FW pointer to derive ADSP header */
243 stripped_fw.data = fw->data;
244 stripped_fw.size = fw->size;
245
246 skl_dsp_strip_extended_manifest(&stripped_fw);
247
248 buf = stripped_fw.data;
249
250 /* check if we have enough space in file to move to header */
251 safe_file = sizeof(*adsp_hdr) + offset;
252 if (stripped_fw.size <= safe_file) {
253 dev_err(ctx->dev, "Small fw file size, No space for hdr\n");
254 return -EINVAL;
255 }
256
257 adsp_hdr = (struct adsp_fw_hdr *)(buf + offset);
258
259 /* check 1st module entry is in file */
260 safe_file += adsp_hdr->len + sizeof(*mod_entry);
261 if (stripped_fw.size <= safe_file) {
262 dev_err(ctx->dev, "Small fw file size, No module entry\n");
263 return -EINVAL;
264 }
265
266 mod_entry = (struct adsp_module_entry *)(buf + offset + adsp_hdr->len);
267
268 num_entry = adsp_hdr->num_modules;
269
270 /* check all entries are in file */
271 safe_file += num_entry * sizeof(*mod_entry);
272 if (stripped_fw.size <= safe_file) {
273 dev_err(ctx->dev, "Small fw file size, No modules\n");
274 return -EINVAL;
275 }
276
277
278 /*
279 * Read the UUID(GUID) from FW Manifest.
280 *
281 * The 16 byte UUID format is: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXX
282 * Populate the UUID table to store module_id and loadable flags
283 * for the module.
284 */
285
286 for (i = 0; i < num_entry; i++, mod_entry++) {
287 module = kzalloc(sizeof(*module), GFP_KERNEL);
288 if (!module) {
289 ret = -ENOMEM;
290 goto free_uuid_list;
291 }
292
293 import_guid(&module->uuid, mod_entry->uuid);
294
295 module->id = (i | (index << 12));
296 module->is_loadable = mod_entry->type.load_type;
297 module->max_instance = mod_entry->instance_max_count;
298 size = sizeof(int) * mod_entry->instance_max_count;
299 module->instance_id = devm_kzalloc(ctx->dev, size, GFP_KERNEL);
300 if (!module->instance_id) {
301 ret = -ENOMEM;
302 kfree(module);
303 goto free_uuid_list;
304 }
305
306 list_add_tail(&module->list, &skl->uuid_list);
307
308 dev_dbg(ctx->dev,
309 "Adding uuid :%pUL mod id: %d Loadable: %d\n",
310 &module->uuid, module->id, module->is_loadable);
311 }
312
313 return 0;
314
315 free_uuid_list:
316 skl_freeup_uuid_list(skl);
317 return ret;
318 }
319
skl_freeup_uuid_list(struct skl_dev * skl)320 void skl_freeup_uuid_list(struct skl_dev *skl)
321 {
322 struct uuid_module *uuid, *_uuid;
323
324 list_for_each_entry_safe(uuid, _uuid, &skl->uuid_list, list) {
325 list_del(&uuid->list);
326 kfree(uuid);
327 }
328 }
329
330 /*
331 * some firmware binary contains some extended manifest. This needs
332 * to be stripped in that case before we load and use that image.
333 *
334 * Get the module id for the module by checking
335 * the table for the UUID for the module
336 */
skl_dsp_strip_extended_manifest(struct firmware * fw)337 int skl_dsp_strip_extended_manifest(struct firmware *fw)
338 {
339 struct skl_ext_manifest_hdr *hdr;
340
341 /* check if fw file is greater than header we are looking */
342 if (fw->size < sizeof(hdr)) {
343 pr_err("%s: Firmware file small, no hdr\n", __func__);
344 return -EINVAL;
345 }
346
347 hdr = (struct skl_ext_manifest_hdr *)fw->data;
348
349 if (hdr->id == SKL_EXT_MANIFEST_HEADER_MAGIC) {
350 fw->size -= hdr->len;
351 fw->data += hdr->len;
352 }
353
354 return 0;
355 }
356
skl_sst_ctx_init(struct device * dev,int irq,const char * fw_name,struct skl_dsp_loader_ops dsp_ops,struct skl_dev ** dsp,struct sst_dsp_device * skl_dev)357 int skl_sst_ctx_init(struct device *dev, int irq, const char *fw_name,
358 struct skl_dsp_loader_ops dsp_ops, struct skl_dev **dsp,
359 struct sst_dsp_device *skl_dev)
360 {
361 struct skl_dev *skl = *dsp;
362 struct sst_dsp *sst;
363
364 skl->dev = dev;
365 skl_dev->thread_context = skl;
366 INIT_LIST_HEAD(&skl->uuid_list);
367 skl->dsp = skl_dsp_ctx_init(dev, skl_dev, irq);
368 if (!skl->dsp) {
369 dev_err(skl->dev, "%s: no device\n", __func__);
370 return -ENODEV;
371 }
372
373 sst = skl->dsp;
374 sst->fw_name = fw_name;
375 sst->dsp_ops = dsp_ops;
376 init_waitqueue_head(&skl->mod_load_wait);
377 INIT_LIST_HEAD(&sst->module_list);
378
379 skl->is_first_boot = true;
380
381 return 0;
382 }
383
skl_prepare_lib_load(struct skl_dev * skl,struct skl_lib_info * linfo,struct firmware * stripped_fw,unsigned int hdr_offset,int index)384 int skl_prepare_lib_load(struct skl_dev *skl, struct skl_lib_info *linfo,
385 struct firmware *stripped_fw,
386 unsigned int hdr_offset, int index)
387 {
388 int ret;
389 struct sst_dsp *dsp = skl->dsp;
390
391 if (linfo->fw == NULL) {
392 ret = request_firmware(&linfo->fw, linfo->name,
393 skl->dev);
394 if (ret < 0) {
395 dev_err(skl->dev, "Request lib %s failed:%d\n",
396 linfo->name, ret);
397 return ret;
398 }
399 }
400
401 if (skl->is_first_boot) {
402 ret = snd_skl_parse_uuids(dsp, linfo->fw, hdr_offset, index);
403 if (ret < 0)
404 return ret;
405 }
406
407 stripped_fw->data = linfo->fw->data;
408 stripped_fw->size = linfo->fw->size;
409 skl_dsp_strip_extended_manifest(stripped_fw);
410
411 return 0;
412 }
413
skl_release_library(struct skl_lib_info * linfo,int lib_count)414 void skl_release_library(struct skl_lib_info *linfo, int lib_count)
415 {
416 int i;
417
418 /* library indices start from 1 to N. 0 represents base FW */
419 for (i = 1; i < lib_count; i++) {
420 if (linfo[i].fw) {
421 release_firmware(linfo[i].fw);
422 linfo[i].fw = NULL;
423 }
424 }
425 }
426