sound/soc/intel/skylake/skl-sst.c

   1 /*
   2  * skl-sst.c - HDA DSP library functions for SKL platform
   3  *
   4  * Copyright (C) 2014-15, Intel Corporation.
   5  * Author:Rafal Redzimski <rafal.f.redzimski@intel.com>
   6  *      Jeeja KP <jeeja.kp@intel.com>
   7  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as version 2, as
  11  * published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  */
  18
  19 #include <linux/module.h>
  20 #include <linux/delay.h>
  21 #include <linux/device.h>
  22 #include <linux/err.h>
  23 #include <linux/uuid.h>
  24 #include "../common/sst-dsp.h"
  25 #include "../common/sst-dsp-priv.h"
  26 #include "../common/sst-ipc.h"
  27 #include "skl-sst-ipc.h"
  28
  29 #define SKL_BASEFW_TIMEOUT      300
  30 #define SKL_INIT_TIMEOUT        1000
  31
  32 /* Intel HD Audio SRAM Window 0*/
  33 #define SKL_ADSP_SRAM0_BASE     0x8000
  34
  35 /* Firmware status window */
  36 #define SKL_ADSP_FW_STATUS      SKL_ADSP_SRAM0_BASE
  37 #define SKL_ADSP_ERROR_CODE     (SKL_ADSP_FW_STATUS + 0x4)
  38
  39 #define SKL_NUM_MODULES         1
  40
  41 static bool skl_check_fw_status(struct sst_dsp *ctx, u32 status)
  42 {
  43         u32 cur_sts;
  44
  45         cur_sts = sst_dsp_shim_read(ctx, SKL_ADSP_FW_STATUS) & SKL_FW_STS_MASK;
  46
  47         return (cur_sts == status);
  48 }
  49
  50 static int skl_transfer_firmware(struct sst_dsp *ctx,
  51                 const void *basefw, u32 base_fw_size)
  52 {
  53         int ret = 0;
  54
  55         ret = ctx->cl_dev.ops.cl_copy_to_dmabuf(ctx, basefw, base_fw_size);
  56         if (ret < 0)
  57                 return ret;
  58
  59         ret = sst_dsp_register_poll(ctx,
  60                         SKL_ADSP_FW_STATUS,
  61                         SKL_FW_STS_MASK,
  62                         SKL_FW_RFW_START,
  63                         SKL_BASEFW_TIMEOUT,
  64                         "Firmware boot");
  65
  66         ctx->cl_dev.ops.cl_stop_dma(ctx);
  67
  68         return ret;
  69 }
  70
  71 #define SKL_ADSP_FW_BIN_HDR_OFFSET 0x284
  72
  73 static int skl_load_base_firmware(struct sst_dsp *ctx)
  74 {
  75         int ret = 0, i;
  76         struct skl_sst *skl = ctx->thread_context;
  77         struct firmware stripped_fw;
  78         u32 reg;
  79
  80         skl->boot_complete = false;
  81         init_waitqueue_head(&skl->boot_wait);
  82
  83         if (ctx->fw == NULL) {
  84                 ret = request_firmware(&ctx->fw, ctx->fw_name, ctx->dev);
  85                 if (ret < 0) {
  86                         dev_err(ctx->dev, "Request firmware failed %d\n", ret);
  87                         return -EIO;
  88                 }
  89         }
  90
  91         /* prase uuids on first boot */
  92         if (skl->is_first_boot) {
  93                 ret = snd_skl_parse_uuids(ctx, ctx->fw, SKL_ADSP_FW_BIN_HDR_OFFSET, 0);
  94                 if (ret < 0) {
  95                         dev_err(ctx->dev, "UUID parsing err: %d\n", ret);
  96                         release_firmware(ctx->fw);
  97                         skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK);
  98                         return ret;
  99                 }
 100         }
 101
 102         /* check for extended manifest */
 103         stripped_fw.data = ctx->fw->data;
 104         stripped_fw.size = ctx->fw->size;
 105
 106         skl_dsp_strip_extended_manifest(&stripped_fw);
 107
 108         ret = skl_dsp_boot(ctx);
 109         if (ret < 0) {
 110                 dev_err(ctx->dev, "Boot dsp core failed ret: %d\n", ret);
 111                 goto skl_load_base_firmware_failed;
 112         }
 113
 114         ret = skl_cldma_prepare(ctx);
 115         if (ret < 0) {
 116                 dev_err(ctx->dev, "CL dma prepare failed : %d\n", ret);
 117                 goto skl_load_base_firmware_failed;
 118         }
 119
 120         /* enable Interrupt */
 121         skl_ipc_int_enable(ctx);
 122         skl_ipc_op_int_enable(ctx);
 123
 124         /* check ROM Status */
 125         for (i = SKL_INIT_TIMEOUT; i > 0; --i) {
 126                 if (skl_check_fw_status(ctx, SKL_FW_INIT)) {
 127                         dev_dbg(ctx->dev,
 128                                 "ROM loaded, we can continue with FW loading\n");
 129                         break;
 130                 }
 131                 mdelay(1);
 132         }
 133         if (!i) {
 134                 reg = sst_dsp_shim_read(ctx, SKL_ADSP_FW_STATUS);
 135                 dev_err(ctx->dev,
 136                         "Timeout waiting for ROM init done, reg:0x%x\n", reg);
 137                 ret = -EIO;
 138                 goto transfer_firmware_failed;
 139         }
 140
 141         ret = skl_transfer_firmware(ctx, stripped_fw.data, stripped_fw.size);
 142         if (ret < 0) {
 143                 dev_err(ctx->dev, "Transfer firmware failed%d\n", ret);
 144                 goto transfer_firmware_failed;
 145         } else {
 146                 ret = wait_event_timeout(skl->boot_wait, skl->boot_complete,
 147                                         msecs_to_jiffies(SKL_IPC_BOOT_MSECS));
 148                 if (ret == 0) {
 149                         dev_err(ctx->dev, "DSP boot failed, FW Ready timed-out\n");
 150                         ret = -EIO;
 151                         goto transfer_firmware_failed;
 152                 }
 153
 154                 dev_dbg(ctx->dev, "Download firmware successful%d\n", ret);
 155                 skl->fw_loaded = true;
 156         }
 157         return 0;
 158 transfer_firmware_failed:
 159         ctx->cl_dev.ops.cl_cleanup_controller(ctx);
 160 skl_load_base_firmware_failed:
 161         skl_dsp_disable_core(ctx, SKL_DSP_CORE0_MASK);
 162         release_firmware(ctx->fw);
 163         ctx->fw = NULL;
 164         return ret;
 165 }
 166
 167 static int skl_set_dsp_D0(struct sst_dsp *ctx, unsigned int core_id)
 168 {
 169         int ret;
 170         struct skl_ipc_dxstate_info dx;
 171         struct skl_sst *skl = ctx->thread_context;
 172         unsigned int core_mask = SKL_DSP_CORE_MASK(core_id);
 173
 174         /* If core0 is being turned on, we need to load the FW */
 175         if (core_id == SKL_DSP_CORE0_ID) {
 176                 ret = skl_load_base_firmware(ctx);
 177                 if (ret < 0) {
 178                         dev_err(ctx->dev, "unable to load firmware\n");
 179                         return ret;
 180                 }
 181         }
 182
 183         /*
 184          * If any core other than core 0 is being moved to D0, enable the
 185          * core and send the set dx IPC for the core.
 186          */
 187         if (core_id != SKL_DSP_CORE0_ID) {
 188                 ret = skl_dsp_enable_core(ctx, core_mask);
 189                 if (ret < 0)
 190                         return ret;
 191
 192                 dx.core_mask = core_mask;
 193                 dx.dx_mask = core_mask;
 194
 195                 ret = skl_ipc_set_dx(&skl->ipc, SKL_INSTANCE_ID,
 196                                         SKL_BASE_FW_MODULE_ID, &dx);
 197                 if (ret < 0) {
 198                         dev_err(ctx->dev, "Failed to set dsp to D0:core id= %d\n",
 199                                         core_id);
 200                         skl_dsp_disable_core(ctx, core_mask);
 201                 }
 202         }
 203
 204         skl->cores.state[core_id] = SKL_DSP_RUNNING;
 205
 206         return ret;
 207 }
 208
 209 static int skl_set_dsp_D3(struct sst_dsp *ctx, unsigned int core_id)
 210 {
 211         int ret;
 212         struct skl_ipc_dxstate_info dx;
 213         struct skl_sst *skl = ctx->thread_context;
 214         unsigned int core_mask = SKL_DSP_CORE_MASK(core_id);
 215
 216         dx.core_mask = core_mask;
 217         dx.dx_mask = SKL_IPC_D3_MASK;
 218
 219         ret = skl_ipc_set_dx(&skl->ipc, SKL_INSTANCE_ID, SKL_BASE_FW_MODULE_ID, &dx);
 220         if (ret < 0)
 221                 dev_err(ctx->dev, "set Dx core %d fail: %d\n", core_id, ret);
 222
 223         if (core_id == SKL_DSP_CORE0_ID) {
 224                 /* disable Interrupt */
 225                 ctx->cl_dev.ops.cl_cleanup_controller(ctx);
 226                 skl_cldma_int_disable(ctx);
 227                 skl_ipc_op_int_disable(ctx);
 228                 skl_ipc_int_disable(ctx);
 229         }
 230
 231         ret = skl_dsp_disable_core(ctx, core_mask);
 232         if (ret < 0)
 233                 return ret;
 234
 235         skl->cores.state[core_id] = SKL_DSP_RESET;
 236         return ret;
 237 }
 238
 239 static unsigned int skl_get_errorcode(struct sst_dsp *ctx)
 240 {
 241          return sst_dsp_shim_read(ctx, SKL_ADSP_ERROR_CODE);
 242 }
 243
 244 /*
 245  * since get/set_module are called from DAPM context,
 246  * we don't need lock for usage count
 247  */
 248 static int skl_get_module(struct sst_dsp *ctx, u16 mod_id)
 249 {
 250         struct skl_module_table *module;
 251
 252         list_for_each_entry(module, &ctx->module_list, list) {
 253                 if (module->mod_info->mod_id == mod_id)
 254                         return ++module->usage_cnt;
 255         }
 256
 257         return -EINVAL;
 258 }
 259
 260 static int skl_put_module(struct sst_dsp *ctx, u16 mod_id)
 261 {
 262         struct skl_module_table *module;
 263
 264         list_for_each_entry(module, &ctx->module_list, list) {
 265                 if (module->mod_info->mod_id == mod_id)
 266                         return --module->usage_cnt;
 267         }
 268
 269         return -EINVAL;
 270 }
 271
 272 static struct skl_module_table *skl_fill_module_table(struct sst_dsp *ctx,
 273                                                 char *mod_name, int mod_id)
 274 {
 275         const struct firmware *fw;
 276         struct skl_module_table *skl_module;
 277         unsigned int size;
 278         int ret;
 279
 280         ret = request_firmware(&fw, mod_name, ctx->dev);
 281         if (ret < 0) {
 282                 dev_err(ctx->dev, "Request Module %s failed :%d\n",
 283                                                         mod_name, ret);
 284                 return NULL;
 285         }
 286
 287         skl_module = devm_kzalloc(ctx->dev, sizeof(*skl_module), GFP_KERNEL);
 288         if (skl_module == NULL) {
 289                 release_firmware(fw);
 290                 return NULL;
 291         }
 292
 293         size = sizeof(*skl_module->mod_info);
 294         skl_module->mod_info = devm_kzalloc(ctx->dev, size, GFP_KERNEL);
 295         if (skl_module->mod_info == NULL) {
 296                 release_firmware(fw);
 297                 return NULL;
 298         }
 299
 300         skl_module->mod_info->mod_id = mod_id;
 301         skl_module->mod_info->fw = fw;
 302         list_add(&skl_module->list, &ctx->module_list);
 303
 304         return skl_module;
 305 }
 306
 307 /* get a module from it's unique ID */
 308 static struct skl_module_table *skl_module_get_from_id(
 309                         struct sst_dsp *ctx, u16 mod_id)
 310 {
 311         struct skl_module_table *module;
 312
 313         if (list_empty(&ctx->module_list)) {
 314                 dev_err(ctx->dev, "Module list is empty\n");
 315                 return NULL;
 316         }
 317
 318         list_for_each_entry(module, &ctx->module_list, list) {
 319                 if (module->mod_info->mod_id == mod_id)
 320                         return module;
 321         }
 322
 323         return NULL;
 324 }
 325
 326 static int skl_transfer_module(struct sst_dsp *ctx,
 327                         struct skl_load_module_info *module)
 328 {
 329         int ret;
 330         struct skl_sst *skl = ctx->thread_context;
 331
 332         ret = ctx->cl_dev.ops.cl_copy_to_dmabuf(ctx, module->fw->data,
 333                                                         module->fw->size);
 334         if (ret < 0)
 335                 return ret;
 336
 337         ret = skl_ipc_load_modules(&skl->ipc, SKL_NUM_MODULES,
 338                                                 (void *)&module->mod_id);
 339         if (ret < 0)
 340                 dev_err(ctx->dev, "Failed to Load module: %d\n", ret);
 341
 342         ctx->cl_dev.ops.cl_stop_dma(ctx);
 343
 344         return ret;
 345 }
 346
 347 static int skl_load_module(struct sst_dsp *ctx, u16 mod_id, u8 *guid)
 348 {
 349         struct skl_module_table *module_entry = NULL;
 350         int ret = 0;
 351         char mod_name[64]; /* guid str = 32 chars + 4 hyphens */
 352         uuid_le *uuid_mod;
 353
 354         uuid_mod = (uuid_le *)guid;
 355         snprintf(mod_name, sizeof(mod_name), "%s%pUL%s",
 356                                 "intel/dsp_fw_", uuid_mod, ".bin");
 357
 358         module_entry = skl_module_get_from_id(ctx, mod_id);
 359         if (module_entry == NULL) {
 360                 module_entry = skl_fill_module_table(ctx, mod_name, mod_id);
 361                 if (module_entry == NULL) {
 362                         dev_err(ctx->dev, "Failed to Load module\n");
 363                         return -EINVAL;
 364                 }
 365         }
 366
 367         if (!module_entry->usage_cnt) {
 368                 ret = skl_transfer_module(ctx, module_entry->mod_info);
 369                 if (ret < 0) {
 370                         dev_err(ctx->dev, "Failed to Load module\n");
 371                         return ret;
 372                 }
 373         }
 374
 375         ret = skl_get_module(ctx, mod_id);
 376
 377         return ret;
 378 }
 379
 380 static int skl_unload_module(struct sst_dsp *ctx, u16 mod_id)
 381 {
 382         int usage_cnt;
 383         struct skl_sst *skl = ctx->thread_context;
 384         int ret = 0;
 385
 386         usage_cnt = skl_put_module(ctx, mod_id);
 387         if (usage_cnt < 0) {
 388                 dev_err(ctx->dev, "Module bad usage cnt!:%d\n", usage_cnt);
 389                 return -EIO;
 390         }
 391         ret = skl_ipc_unload_modules(&skl->ipc,
 392                         SKL_NUM_MODULES, &mod_id);
 393         if (ret < 0) {
 394                 dev_err(ctx->dev, "Failed to UnLoad module\n");
 395                 skl_get_module(ctx, mod_id);
 396                 return ret;
 397         }
 398
 399         return ret;
 400 }
 401
 402 void skl_clear_module_cnt(struct sst_dsp *ctx)
 403 {
 404         struct skl_module_table *module;
 405
 406         if (list_empty(&ctx->module_list))
 407                 return;
 408
 409         list_for_each_entry(module, &ctx->module_list, list) {
 410                 module->usage_cnt = 0;
 411         }
 412 }
 413 EXPORT_SYMBOL_GPL(skl_clear_module_cnt);
 414
 415 static void skl_clear_module_table(struct sst_dsp *ctx)
 416 {
 417         struct skl_module_table *module, *tmp;
 418
 419         if (list_empty(&ctx->module_list))
 420                 return;
 421
 422         list_for_each_entry_safe(module, tmp, &ctx->module_list, list) {
 423                 list_del(&module->list);
 424                 release_firmware(module->mod_info->fw);
 425         }
 426 }
 427
 428 static struct skl_dsp_fw_ops skl_fw_ops = {
 429         .set_state_D0 = skl_set_dsp_D0,
 430         .set_state_D3 = skl_set_dsp_D3,
 431         .load_fw = skl_load_base_firmware,
 432         .get_fw_errcode = skl_get_errorcode,
 433         .load_mod = skl_load_module,
 434         .unload_mod = skl_unload_module,
 435 };
 436
 437 static struct sst_ops skl_ops = {
 438         .irq_handler = skl_dsp_sst_interrupt,
 439         .write = sst_shim32_write,
 440         .read = sst_shim32_read,
 441         .ram_read = sst_memcpy_fromio_32,
 442         .ram_write = sst_memcpy_toio_32,
 443         .free = skl_dsp_free,
 444 };
 445
 446 static struct sst_dsp_device skl_dev = {
 447         .thread = skl_dsp_irq_thread_handler,
 448         .ops = &skl_ops,
 449 };
 450
 451 int skl_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq,
 452                 const char *fw_name, struct skl_dsp_loader_ops dsp_ops, struct skl_sst **dsp)
 453 {
 454         struct skl_sst *skl;
 455         struct sst_dsp *sst;
 456         int ret;
 457
 458         skl = devm_kzalloc(dev, sizeof(*skl), GFP_KERNEL);
 459         if (skl == NULL)
 460                 return -ENOMEM;
 461
 462         skl->dev = dev;
 463         skl_dev.thread_context = skl;
 464         INIT_LIST_HEAD(&skl->uuid_list);
 465
 466         skl->dsp = skl_dsp_ctx_init(dev, &skl_dev, irq);
 467         if (!skl->dsp) {
 468                 dev_err(skl->dev, "%s: no device\n", __func__);
 469                 return -ENODEV;
 470         }
 471
 472         sst = skl->dsp;
 473
 474         sst->fw_name = fw_name;
 475         sst->addr.lpe = mmio_base;
 476         sst->addr.shim = mmio_base;
 477         sst_dsp_mailbox_init(sst, (SKL_ADSP_SRAM0_BASE + SKL_ADSP_W0_STAT_SZ),
 478                         SKL_ADSP_W0_UP_SZ, SKL_ADSP_SRAM1_BASE, SKL_ADSP_W1_SZ);
 479
 480         INIT_LIST_HEAD(&sst->module_list);
 481         sst->dsp_ops = dsp_ops;
 482         sst->fw_ops = skl_fw_ops;
 483
 484         ret = skl_ipc_init(dev, skl);
 485         if (ret)
 486                 return ret;
 487
 488         skl->cores.count = 2;
 489         skl->is_first_boot = true;
 490
 491         if (dsp)
 492                 *dsp = skl;
 493
 494         return ret;
 495 }
 496 EXPORT_SYMBOL_GPL(skl_sst_dsp_init);
 497
 498 int skl_sst_init_fw(struct device *dev, struct skl_sst *ctx)
 499 {
 500         int ret;
 501         struct sst_dsp *sst = ctx->dsp;
 502
 503         ret = sst->fw_ops.load_fw(sst);
 504         if (ret < 0) {
 505                 dev_err(dev, "Load base fw failed : %d\n", ret);
 506                 return ret;
 507         }
 508
 509         skl_dsp_init_core_state(sst);
 510         ctx->is_first_boot = false;
 511
 512         return 0;
 513 }
 514 EXPORT_SYMBOL_GPL(skl_sst_init_fw);
 515
 516 void skl_sst_dsp_cleanup(struct device *dev, struct skl_sst *ctx)
 517 {
 518         skl_clear_module_table(ctx->dsp);
 519         skl_freeup_uuid_list(ctx);
 520         skl_ipc_free(&ctx->ipc);
 521         ctx->dsp->ops->free(ctx->dsp);
 522         if (ctx->boot_complete) {
 523                 ctx->dsp->cl_dev.ops.cl_cleanup_controller(ctx->dsp);
 524                 skl_cldma_int_disable(ctx->dsp);
 525         }
 526 }
 527 EXPORT_SYMBOL_GPL(skl_sst_dsp_cleanup);
 528
 529 MODULE_LICENSE("GPL v2");
 530 MODULE_DESCRIPTION("Intel Skylake IPC driver");