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fffa1cca VK |
1 | /* |
2 | * intel_sst_dsp.c - Intel SST Driver for audio engine | |
3 | * | |
4 | * Copyright (C) 2008-10 Intel Corp | |
5 | * Authors: Vinod Koul <vinod.koul@intel.com> | |
6 | * Harsha Priya <priya.harsha@intel.com> | |
7 | * Dharageswari R <dharageswari.r@intel.com> | |
8 | * KP Jeeja <jeeja.kp@intel.com> | |
9 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; version 2 of the License. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License along | |
21 | * with this program; if not, write to the Free Software Foundation, Inc., | |
22 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
23 | * | |
24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
25 | * | |
26 | * This driver exposes the audio engine functionalities to the ALSA | |
27 | * and middleware. | |
28 | * | |
29 | * This file contains all dsp controlling functions like firmware download, | |
30 | * setting/resetting dsp cores, etc | |
31 | */ | |
d0f40c50 JP |
32 | |
33 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
34 | ||
fffa1cca VK |
35 | #include <linux/pci.h> |
36 | #include <linux/fs.h> | |
37 | #include <linux/firmware.h> | |
38 | #include "intel_sst.h" | |
39 | #include "intel_sst_ioctl.h" | |
40 | #include "intel_sst_fw_ipc.h" | |
41 | #include "intel_sst_common.h" | |
42 | ||
43 | ||
44 | /** | |
45 | * intel_sst_reset_dsp_mrst - Resetting SST DSP | |
46 | * | |
47 | * This resets DSP in case of MRST platfroms | |
48 | */ | |
49 | static int intel_sst_reset_dsp_mrst(void) | |
50 | { | |
51 | union config_status_reg csr; | |
52 | ||
d0f40c50 | 53 | pr_debug("Resetting the DSP in mrst\n"); |
964c6975 VK |
54 | csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); |
55 | csr.full |= 0x382; | |
fffa1cca VK |
56 | sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); |
57 | csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); | |
58 | csr.part.strb_cntr_rst = 0; | |
59 | csr.part.run_stall = 0x1; | |
60 | csr.part.bypass = 0x7; | |
61 | csr.part.sst_reset = 0x1; | |
62 | sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); | |
63 | return 0; | |
64 | } | |
65 | ||
66 | /** | |
67 | * intel_sst_reset_dsp_medfield - Resetting SST DSP | |
68 | * | |
69 | * This resets DSP in case of Medfield platfroms | |
70 | */ | |
71 | static int intel_sst_reset_dsp_medfield(void) | |
72 | { | |
73 | union config_status_reg csr; | |
74 | ||
d0f40c50 | 75 | pr_debug("Resetting the DSP in medfield\n"); |
fffa1cca VK |
76 | csr.full = 0x048303E2; |
77 | sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); | |
78 | ||
79 | return 0; | |
80 | } | |
81 | ||
82 | /** | |
83 | * sst_start_mrst - Start the SST DSP processor | |
84 | * | |
85 | * This starts the DSP in MRST platfroms | |
86 | */ | |
87 | static int sst_start_mrst(void) | |
88 | { | |
89 | union config_status_reg csr; | |
90 | ||
91 | csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); | |
92 | csr.part.bypass = 0; | |
93 | sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); | |
94 | csr.part.run_stall = 0; | |
95 | csr.part.sst_reset = 0; | |
96 | csr.part.strb_cntr_rst = 1; | |
d0f40c50 | 97 | pr_debug("Setting SST to execute_mrst 0x%x\n", csr.full); |
fffa1cca VK |
98 | sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
103 | /** | |
104 | * sst_start_medfield - Start the SST DSP processor | |
105 | * | |
106 | * This starts the DSP in MRST platfroms | |
107 | */ | |
108 | static int sst_start_medfield(void) | |
109 | { | |
110 | union config_status_reg csr; | |
111 | ||
112 | csr.full = 0x04830062; | |
113 | sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); | |
114 | csr.full = 0x04830063; | |
115 | sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); | |
116 | csr.full = 0x04830061; | |
117 | sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); | |
d0f40c50 | 118 | pr_debug("Starting the DSP_medfld\n"); |
fffa1cca VK |
119 | |
120 | return 0; | |
121 | } | |
122 | ||
123 | /** | |
124 | * sst_parse_module - Parse audio FW modules | |
125 | * | |
126 | * @module: FW module header | |
127 | * | |
128 | * Parses modules that need to be placed in SST IRAM and DRAM | |
129 | * returns error or 0 if module sizes are proper | |
130 | */ | |
131 | static int sst_parse_module(struct fw_module_header *module) | |
132 | { | |
133 | struct dma_block_info *block; | |
134 | u32 count; | |
135 | void __iomem *ram; | |
136 | ||
d0f40c50 | 137 | pr_debug("module sign %s size %x blocks %x type %x\n", |
fffa1cca VK |
138 | module->signature, module->mod_size, |
139 | module->blocks, module->type); | |
d0f40c50 | 140 | pr_debug("module entrypoint 0x%x\n", module->entry_point); |
fffa1cca VK |
141 | |
142 | block = (void *)module + sizeof(*module); | |
143 | ||
144 | for (count = 0; count < module->blocks; count++) { | |
145 | if (block->size <= 0) { | |
d0f40c50 | 146 | pr_err("block size invalid\n"); |
fffa1cca VK |
147 | return -EINVAL; |
148 | } | |
149 | switch (block->type) { | |
150 | case SST_IRAM: | |
151 | ram = sst_drv_ctx->iram; | |
152 | break; | |
153 | case SST_DRAM: | |
154 | ram = sst_drv_ctx->dram; | |
155 | break; | |
156 | default: | |
d0f40c50 | 157 | pr_err("wrong ram type0x%x in block0x%x\n", |
fffa1cca VK |
158 | block->type, count); |
159 | return -EINVAL; | |
160 | } | |
161 | memcpy_toio(ram + block->ram_offset, | |
162 | (void *)block + sizeof(*block), block->size); | |
163 | block = (void *)block + sizeof(*block) + block->size; | |
164 | } | |
165 | return 0; | |
166 | } | |
167 | ||
168 | /** | |
169 | * sst_parse_fw_image - parse and load FW | |
170 | * | |
171 | * @sst_fw: pointer to audio fw | |
172 | * | |
173 | * This function is called to parse and download the FW image | |
174 | */ | |
175 | static int sst_parse_fw_image(const struct firmware *sst_fw) | |
176 | { | |
177 | struct fw_header *header; | |
178 | u32 count; | |
179 | int ret_val; | |
180 | struct fw_module_header *module; | |
181 | ||
182 | BUG_ON(!sst_fw); | |
183 | ||
184 | /* Read the header information from the data pointer */ | |
185 | header = (struct fw_header *)sst_fw->data; | |
186 | ||
187 | /* verify FW */ | |
188 | if ((strncmp(header->signature, SST_FW_SIGN, 4) != 0) || | |
189 | (sst_fw->size != header->file_size + sizeof(*header))) { | |
190 | /* Invalid FW signature */ | |
d0f40c50 | 191 | pr_err("Invalid FW sign/filesize mismatch\n"); |
fffa1cca VK |
192 | return -EINVAL; |
193 | } | |
d0f40c50 | 194 | pr_debug("header sign=%s size=%x modules=%x fmt=%x size=%x\n", |
fffa1cca VK |
195 | header->signature, header->file_size, header->modules, |
196 | header->file_format, sizeof(*header)); | |
197 | module = (void *)sst_fw->data + sizeof(*header); | |
198 | for (count = 0; count < header->modules; count++) { | |
199 | /* module */ | |
200 | ret_val = sst_parse_module(module); | |
201 | if (ret_val) | |
202 | return ret_val; | |
203 | module = (void *)module + sizeof(*module) + module->mod_size ; | |
204 | } | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
209 | /** | |
210 | * sst_load_fw - function to load FW into DSP | |
211 | * | |
212 | * @fw: Pointer to driver loaded FW | |
213 | * @context: driver context | |
214 | * | |
215 | * This function is called by OS when the FW is loaded into kernel | |
216 | */ | |
217 | int sst_load_fw(const struct firmware *fw, void *context) | |
218 | { | |
219 | int ret_val; | |
220 | ||
d0f40c50 | 221 | pr_debug("load_fw called\n"); |
fffa1cca VK |
222 | BUG_ON(!fw); |
223 | ||
224 | if (sst_drv_ctx->pci_id == SST_MRST_PCI_ID) | |
225 | ret_val = intel_sst_reset_dsp_mrst(); | |
226 | else if (sst_drv_ctx->pci_id == SST_MFLD_PCI_ID) | |
227 | ret_val = intel_sst_reset_dsp_medfield(); | |
228 | if (ret_val) | |
229 | return ret_val; | |
230 | ||
231 | ret_val = sst_parse_fw_image(fw); | |
232 | if (ret_val) | |
233 | return ret_val; | |
234 | mutex_lock(&sst_drv_ctx->sst_lock); | |
235 | sst_drv_ctx->sst_state = SST_FW_LOADED; | |
236 | mutex_unlock(&sst_drv_ctx->sst_lock); | |
237 | /* 7. ask scu to reset the bypass bits */ | |
238 | /* 8.bring sst out of reset */ | |
239 | if (sst_drv_ctx->pci_id == SST_MRST_PCI_ID) | |
240 | ret_val = sst_start_mrst(); | |
241 | else if (sst_drv_ctx->pci_id == SST_MFLD_PCI_ID) | |
242 | ret_val = sst_start_medfield(); | |
243 | if (ret_val) | |
244 | return ret_val; | |
245 | ||
d0f40c50 | 246 | pr_debug("fw loaded successful!!!\n"); |
fffa1cca VK |
247 | return ret_val; |
248 | } | |
249 | ||
250 | /*This function is called when any codec/post processing library | |
251 | needs to be downloaded*/ | |
252 | static int sst_download_library(const struct firmware *fw_lib, | |
253 | struct snd_sst_lib_download_info *lib) | |
254 | { | |
255 | /* send IPC message and wait */ | |
256 | int i; | |
257 | u8 pvt_id; | |
258 | struct ipc_post *msg = NULL; | |
259 | union config_status_reg csr; | |
260 | struct snd_sst_str_type str_type = {0}; | |
261 | int retval = 0; | |
262 | ||
263 | if (sst_create_large_msg(&msg)) | |
264 | return -ENOMEM; | |
265 | ||
266 | pvt_id = sst_assign_pvt_id(sst_drv_ctx); | |
267 | i = sst_get_block_stream(sst_drv_ctx); | |
d0f40c50 | 268 | pr_debug("alloc block allocated = %d, pvt_id %d\n", i, pvt_id); |
fffa1cca VK |
269 | if (i < 0) { |
270 | kfree(msg); | |
271 | return -ENOMEM; | |
272 | } | |
273 | sst_drv_ctx->alloc_block[i].sst_id = pvt_id; | |
274 | sst_fill_header(&msg->header, IPC_IA_PREP_LIB_DNLD, 1, pvt_id); | |
275 | msg->header.part.data = sizeof(u32) + sizeof(str_type); | |
276 | str_type.codec_type = lib->dload_lib.lib_info.lib_type; | |
277 | /*str_type.pvt_id = pvt_id;*/ | |
278 | memcpy(msg->mailbox_data, &msg->header, sizeof(u32)); | |
279 | memcpy(msg->mailbox_data + sizeof(u32), &str_type, sizeof(str_type)); | |
280 | spin_lock(&sst_drv_ctx->list_spin_lock); | |
281 | list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list); | |
282 | spin_unlock(&sst_drv_ctx->list_spin_lock); | |
283 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); | |
284 | retval = sst_wait_timeout(sst_drv_ctx, &sst_drv_ctx->alloc_block[i]); | |
285 | if (retval) { | |
286 | /* error */ | |
287 | sst_drv_ctx->alloc_block[i].sst_id = BLOCK_UNINIT; | |
d0f40c50 | 288 | pr_err("Prep codec downloaded failed %d\n", |
fffa1cca VK |
289 | retval); |
290 | return -EIO; | |
291 | } | |
d0f40c50 | 292 | pr_debug("FW responded, ready for download now...\n"); |
fffa1cca VK |
293 | /* downloading on success */ |
294 | mutex_lock(&sst_drv_ctx->sst_lock); | |
295 | sst_drv_ctx->sst_state = SST_FW_LOADED; | |
296 | mutex_unlock(&sst_drv_ctx->sst_lock); | |
297 | csr.full = readl(sst_drv_ctx->shim + SST_CSR); | |
298 | csr.part.run_stall = 1; | |
299 | sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); | |
300 | ||
301 | csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); | |
302 | csr.part.bypass = 0x7; | |
303 | sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); | |
304 | ||
305 | sst_parse_fw_image(fw_lib); | |
306 | ||
307 | /* set the FW to running again */ | |
308 | csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); | |
309 | csr.part.bypass = 0x0; | |
310 | sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); | |
311 | ||
312 | csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); | |
313 | csr.part.run_stall = 0; | |
314 | sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); | |
315 | ||
316 | /* send download complete and wait */ | |
317 | if (sst_create_large_msg(&msg)) { | |
318 | sst_drv_ctx->alloc_block[i].sst_id = BLOCK_UNINIT; | |
319 | return -ENOMEM; | |
320 | } | |
321 | ||
322 | sst_fill_header(&msg->header, IPC_IA_LIB_DNLD_CMPLT, 1, pvt_id); | |
323 | sst_drv_ctx->alloc_block[i].sst_id = pvt_id; | |
324 | msg->header.part.data = sizeof(u32) + sizeof(*lib); | |
325 | lib->pvt_id = pvt_id; | |
326 | memcpy(msg->mailbox_data, &msg->header, sizeof(u32)); | |
327 | memcpy(msg->mailbox_data + sizeof(u32), lib, sizeof(*lib)); | |
328 | spin_lock(&sst_drv_ctx->list_spin_lock); | |
329 | list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list); | |
330 | spin_unlock(&sst_drv_ctx->list_spin_lock); | |
331 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); | |
d0f40c50 | 332 | pr_debug("Waiting for FW response Download complete\n"); |
fffa1cca VK |
333 | sst_drv_ctx->alloc_block[i].ops_block.condition = false; |
334 | retval = sst_wait_timeout(sst_drv_ctx, &sst_drv_ctx->alloc_block[i]); | |
335 | if (retval) { | |
336 | /* error */ | |
337 | mutex_lock(&sst_drv_ctx->sst_lock); | |
338 | sst_drv_ctx->sst_state = SST_UN_INIT; | |
339 | mutex_unlock(&sst_drv_ctx->sst_lock); | |
340 | sst_drv_ctx->alloc_block[i].sst_id = BLOCK_UNINIT; | |
341 | return -EIO; | |
342 | } | |
343 | ||
d0f40c50 | 344 | pr_debug("FW success on Download complete\n"); |
fffa1cca VK |
345 | sst_drv_ctx->alloc_block[i].sst_id = BLOCK_UNINIT; |
346 | mutex_lock(&sst_drv_ctx->sst_lock); | |
347 | sst_drv_ctx->sst_state = SST_FW_RUNNING; | |
348 | mutex_unlock(&sst_drv_ctx->sst_lock); | |
349 | return 0; | |
350 | ||
351 | } | |
352 | ||
25985edc | 353 | /* This function is called before downloading the codec/postprocessing |
fffa1cca VK |
354 | library is set for download to SST DSP*/ |
355 | static int sst_validate_library(const struct firmware *fw_lib, | |
356 | struct lib_slot_info *slot, | |
357 | u32 *entry_point) | |
358 | { | |
359 | struct fw_header *header; | |
360 | struct fw_module_header *module; | |
361 | struct dma_block_info *block; | |
362 | unsigned int n_blk, isize = 0, dsize = 0; | |
363 | int err = 0; | |
364 | ||
365 | header = (struct fw_header *)fw_lib->data; | |
366 | if (header->modules != 1) { | |
d0f40c50 | 367 | pr_err("Module no mismatch found\n"); |
fffa1cca VK |
368 | err = -EINVAL; |
369 | goto exit; | |
370 | } | |
371 | module = (void *)fw_lib->data + sizeof(*header); | |
372 | *entry_point = module->entry_point; | |
d0f40c50 JP |
373 | pr_debug("Module entry point 0x%x\n", *entry_point); |
374 | pr_debug("Module Sign %s, Size 0x%x, Blocks 0x%x Type 0x%x\n", | |
fffa1cca VK |
375 | module->signature, module->mod_size, |
376 | module->blocks, module->type); | |
377 | ||
378 | block = (void *)module + sizeof(*module); | |
379 | for (n_blk = 0; n_blk < module->blocks; n_blk++) { | |
380 | switch (block->type) { | |
381 | case SST_IRAM: | |
382 | isize += block->size; | |
383 | break; | |
384 | case SST_DRAM: | |
385 | dsize += block->size; | |
386 | break; | |
387 | default: | |
d0f40c50 | 388 | pr_err("Invalid block type for 0x%x\n", n_blk); |
fffa1cca VK |
389 | err = -EINVAL; |
390 | goto exit; | |
391 | } | |
392 | block = (void *)block + sizeof(*block) + block->size; | |
393 | } | |
394 | if (isize > slot->iram_size || dsize > slot->dram_size) { | |
d0f40c50 | 395 | pr_err("library exceeds size allocated\n"); |
fffa1cca VK |
396 | err = -EINVAL; |
397 | goto exit; | |
398 | } else | |
d0f40c50 | 399 | pr_debug("Library is safe for download...\n"); |
fffa1cca | 400 | |
d0f40c50 | 401 | pr_debug("iram 0x%x, dram 0x%x, iram 0x%x, dram 0x%x\n", |
fffa1cca VK |
402 | isize, dsize, slot->iram_size, slot->dram_size); |
403 | exit: | |
404 | return err; | |
405 | ||
406 | } | |
407 | ||
25985edc | 408 | /* This function is called when FW requests for a particular library download |
fffa1cca VK |
409 | This function prepares the library to download*/ |
410 | int sst_load_library(struct snd_sst_lib_download *lib, u8 ops) | |
411 | { | |
412 | char buf[20]; | |
413 | const char *type, *dir; | |
414 | int len = 0, error = 0; | |
415 | u32 entry_point; | |
416 | const struct firmware *fw_lib; | |
417 | struct snd_sst_lib_download_info dload_info = {{{0},},}; | |
418 | ||
419 | memset(buf, 0, sizeof(buf)); | |
420 | ||
d0f40c50 | 421 | pr_debug("Lib Type 0x%x, Slot 0x%x, ops 0x%x\n", |
fffa1cca | 422 | lib->lib_info.lib_type, lib->slot_info.slot_num, ops); |
d0f40c50 | 423 | pr_debug("Version 0x%x, name %s, caps 0x%x media type 0x%x\n", |
fffa1cca VK |
424 | lib->lib_info.lib_version, lib->lib_info.lib_name, |
425 | lib->lib_info.lib_caps, lib->lib_info.media_type); | |
426 | ||
d0f40c50 | 427 | pr_debug("IRAM Size 0x%x, offset 0x%x\n", |
fffa1cca | 428 | lib->slot_info.iram_size, lib->slot_info.iram_offset); |
d0f40c50 | 429 | pr_debug("DRAM Size 0x%x, offset 0x%x\n", |
fffa1cca VK |
430 | lib->slot_info.dram_size, lib->slot_info.dram_offset); |
431 | ||
432 | switch (lib->lib_info.lib_type) { | |
433 | case SST_CODEC_TYPE_MP3: | |
434 | type = "mp3_"; | |
435 | break; | |
436 | case SST_CODEC_TYPE_AAC: | |
437 | type = "aac_"; | |
438 | break; | |
439 | case SST_CODEC_TYPE_AACP: | |
440 | type = "aac_v1_"; | |
441 | break; | |
442 | case SST_CODEC_TYPE_eAACP: | |
443 | type = "aac_v2_"; | |
444 | break; | |
445 | case SST_CODEC_TYPE_WMA9: | |
446 | type = "wma9_"; | |
447 | break; | |
448 | default: | |
d0f40c50 | 449 | pr_err("Invalid codec type\n"); |
fffa1cca VK |
450 | error = -EINVAL; |
451 | goto wake; | |
452 | } | |
453 | ||
454 | if (ops == STREAM_OPS_CAPTURE) | |
455 | dir = "enc_"; | |
456 | else | |
457 | dir = "dec_"; | |
458 | len = strlen(type) + strlen(dir); | |
459 | strncpy(buf, type, sizeof(buf)-1); | |
460 | strncpy(buf + strlen(type), dir, sizeof(buf)-strlen(type)-1); | |
461 | len += snprintf(buf + len, sizeof(buf) - len, "%d", | |
462 | lib->slot_info.slot_num); | |
463 | len += snprintf(buf + len, sizeof(buf) - len, ".bin"); | |
464 | ||
d0f40c50 | 465 | pr_debug("Requesting %s\n", buf); |
fffa1cca VK |
466 | |
467 | error = request_firmware(&fw_lib, buf, &sst_drv_ctx->pci->dev); | |
468 | if (error) { | |
d0f40c50 | 469 | pr_err("library load failed %d\n", error); |
fffa1cca VK |
470 | goto wake; |
471 | } | |
472 | error = sst_validate_library(fw_lib, &lib->slot_info, &entry_point); | |
473 | if (error) | |
474 | goto wake_free; | |
475 | ||
476 | lib->mod_entry_pt = entry_point; | |
477 | memcpy(&dload_info.dload_lib, lib, sizeof(*lib)); | |
478 | error = sst_download_library(fw_lib, &dload_info); | |
479 | if (error) | |
480 | goto wake_free; | |
481 | ||
482 | /* lib is downloaded and init send alloc again */ | |
d0f40c50 | 483 | pr_debug("Library is downloaded now...\n"); |
fffa1cca VK |
484 | wake_free: |
485 | /* sst_wake_up_alloc_block(sst_drv_ctx, pvt_id, error, NULL); */ | |
486 | release_firmware(fw_lib); | |
487 | wake: | |
488 | return error; | |
489 | } | |
490 |