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 "../common/sst-dsp.h"
  24 #include "../common/sst-dsp-priv.h"
  25 #include "../common/sst-ipc.h"
  26 #include "skl-sst-ipc.h"
  27
  28 #define SKL_BASEFW_TIMEOUT      300
  29 #define SKL_INIT_TIMEOUT        1000
  30
  31 /* Intel HD Audio SRAM Window 0*/
  32 #define SKL_ADSP_SRAM0_BASE     0x8000
  33
  34 /* Firmware status window */
  35 #define SKL_ADSP_FW_STATUS      SKL_ADSP_SRAM0_BASE
  36 #define SKL_ADSP_ERROR_CODE     (SKL_ADSP_FW_STATUS + 0x4)
  37
  38 #define SKL_NUM_MODULES         1
  39
  40 static bool skl_check_fw_status(struct sst_dsp *ctx, u32 status)
  41 {
  42         u32 cur_sts;
  43
  44         cur_sts = sst_dsp_shim_read(ctx, SKL_ADSP_FW_STATUS) & SKL_FW_STS_MASK;
  45
  46         return (cur_sts == status);
  47 }
  48
  49 static int skl_transfer_firmware(struct sst_dsp *ctx,
  50                 const void *basefw, u32 base_fw_size)
  51 {
  52         int ret = 0;
  53
  54         ret = ctx->cl_dev.ops.cl_copy_to_dmabuf(ctx, basefw, base_fw_size);
  55         if (ret < 0)
  56                 return ret;
  57
  58         ret = sst_dsp_register_poll(ctx,
  59                         SKL_ADSP_FW_STATUS,
  60                         SKL_FW_STS_MASK,
  61                         SKL_FW_RFW_START,
  62                         SKL_BASEFW_TIMEOUT,
  63                         "Firmware boot");
  64
  65         ctx->cl_dev.ops.cl_stop_dma(ctx);
  66
  67         return ret;
  68 }
  69
  70 static int skl_load_base_firmware(struct sst_dsp *ctx)
  71 {
  72         int ret = 0, i;
  73         struct skl_sst *skl = ctx->thread_context;
  74         u32 reg;
  75
  76         skl->boot_complete = false;
  77         init_waitqueue_head(&skl->boot_wait);
  78
  79         if (ctx->fw == NULL) {
  80                 ret = request_firmware(&ctx->fw, ctx->fw_name, ctx->dev);
  81                 if (ret < 0) {
  82                         dev_err(ctx->dev, "Request firmware failed %d\n", ret);
  83                         skl_dsp_disable_core(ctx);
  84                         return -EIO;
  85                 }
  86         }
  87
  88         ret = skl_dsp_boot(ctx);
  89         if (ret < 0) {
  90                 dev_err(ctx->dev, "Boot dsp core failed ret: %d", ret);
  91                 goto skl_load_base_firmware_failed;
  92         }
  93
  94         ret = skl_cldma_prepare(ctx);
  95         if (ret < 0) {
  96                 dev_err(ctx->dev, "CL dma prepare failed : %d", ret);
  97                 goto skl_load_base_firmware_failed;
  98         }
  99
 100         /* enable Interrupt */
 101         skl_ipc_int_enable(ctx);
 102         skl_ipc_op_int_enable(ctx);
 103
 104         /* check ROM Status */
 105         for (i = SKL_INIT_TIMEOUT; i > 0; --i) {
 106                 if (skl_check_fw_status(ctx, SKL_FW_INIT)) {
 107                         dev_dbg(ctx->dev,
 108                                 "ROM loaded, we can continue with FW loading\n");
 109                         break;
 110                 }
 111                 mdelay(1);
 112         }
 113         if (!i) {
 114                 reg = sst_dsp_shim_read(ctx, SKL_ADSP_FW_STATUS);
 115                 dev_err(ctx->dev,
 116                         "Timeout waiting for ROM init done, reg:0x%x\n", reg);
 117                 ret = -EIO;
 118                 goto transfer_firmware_failed;
 119         }
 120
 121         ret = skl_transfer_firmware(ctx, ctx->fw->data, ctx->fw->size);
 122         if (ret < 0) {
 123                 dev_err(ctx->dev, "Transfer firmware failed%d\n", ret);
 124                 goto transfer_firmware_failed;
 125         } else {
 126                 ret = wait_event_timeout(skl->boot_wait, skl->boot_complete,
 127                                         msecs_to_jiffies(SKL_IPC_BOOT_MSECS));
 128                 if (ret == 0) {
 129                         dev_err(ctx->dev, "DSP boot failed, FW Ready timed-out\n");
 130                         ret = -EIO;
 131                         goto transfer_firmware_failed;
 132                 }
 133
 134                 dev_dbg(ctx->dev, "Download firmware successful%d\n", ret);
 135                 skl_dsp_set_state_locked(ctx, SKL_DSP_RUNNING);
 136         }
 137         return 0;
 138 transfer_firmware_failed:
 139         ctx->cl_dev.ops.cl_cleanup_controller(ctx);
 140 skl_load_base_firmware_failed:
 141         skl_dsp_disable_core(ctx);
 142         release_firmware(ctx->fw);
 143         ctx->fw = NULL;
 144         return ret;
 145 }
 146
 147 static int skl_set_dsp_D0(struct sst_dsp *ctx)
 148 {
 149         int ret;
 150
 151         ret = skl_load_base_firmware(ctx);
 152         if (ret < 0) {
 153                 dev_err(ctx->dev, "unable to load firmware\n");
 154                 return ret;
 155         }
 156
 157         skl_dsp_set_state_locked(ctx, SKL_DSP_RUNNING);
 158
 159         return ret;
 160 }
 161
 162 static int skl_set_dsp_D3(struct sst_dsp *ctx)
 163 {
 164         int ret;
 165         struct skl_ipc_dxstate_info dx;
 166         struct skl_sst *skl = ctx->thread_context;
 167
 168         dev_dbg(ctx->dev, "In %s:\n", __func__);
 169         mutex_lock(&ctx->mutex);
 170         if (!is_skl_dsp_running(ctx)) {
 171                 mutex_unlock(&ctx->mutex);
 172                 return 0;
 173         }
 174         mutex_unlock(&ctx->mutex);
 175
 176         dx.core_mask = SKL_DSP_CORE0_MASK;
 177         dx.dx_mask = SKL_IPC_D3_MASK;
 178         ret = skl_ipc_set_dx(&skl->ipc, SKL_INSTANCE_ID, SKL_BASE_FW_MODULE_ID, &dx);
 179         if (ret < 0)
 180                 dev_err(ctx->dev,
 181                         "D3 request to FW failed, continuing reset: %d", ret);
 182
 183         /* disable Interrupt */
 184         ctx->cl_dev.ops.cl_cleanup_controller(ctx);
 185         skl_cldma_int_disable(ctx);
 186         skl_ipc_op_int_disable(ctx);
 187         skl_ipc_int_disable(ctx);
 188
 189         ret = skl_dsp_disable_core(ctx);
 190         if (ret < 0) {
 191                 dev_err(ctx->dev, "disable dsp core failed ret: %d\n", ret);
 192                 ret = -EIO;
 193         }
 194         skl_dsp_set_state_locked(ctx, SKL_DSP_RESET);
 195
 196         return ret;
 197 }
 198
 199 static unsigned int skl_get_errorcode(struct sst_dsp *ctx)
 200 {
 201          return sst_dsp_shim_read(ctx, SKL_ADSP_ERROR_CODE);
 202 }
 203
 204 /*
 205  * since get/set_module are called from DAPM context,
 206  * we don't need lock for usage count
 207  */
 208 static int skl_get_module(struct sst_dsp *ctx, u16 mod_id)
 209 {
 210         struct skl_module_table *module;
 211
 212         list_for_each_entry(module, &ctx->module_list, list) {
 213                 if (module->mod_info->mod_id == mod_id)
 214                         return ++module->usage_cnt;
 215         }
 216
 217         return -EINVAL;
 218 }
 219
 220 static int skl_put_module(struct sst_dsp *ctx, u16 mod_id)
 221 {
 222         struct skl_module_table *module;
 223
 224         list_for_each_entry(module, &ctx->module_list, list) {
 225                 if (module->mod_info->mod_id == mod_id)
 226                         return --module->usage_cnt;
 227         }
 228
 229         return -EINVAL;
 230 }
 231
 232 static struct skl_module_table *skl_fill_module_table(struct sst_dsp *ctx,
 233                                                 char *mod_name, int mod_id)
 234 {
 235         const struct firmware *fw;
 236         struct skl_module_table *skl_module;
 237         unsigned int size;
 238         int ret;
 239
 240         ret = request_firmware(&fw, mod_name, ctx->dev);
 241         if (ret < 0) {
 242                 dev_err(ctx->dev, "Request Module %s failed :%d\n",
 243                                                         mod_name, ret);
 244                 return NULL;
 245         }
 246
 247         skl_module = devm_kzalloc(ctx->dev, sizeof(*skl_module), GFP_KERNEL);
 248         if (skl_module == NULL) {
 249                 release_firmware(fw);
 250                 return NULL;
 251         }
 252
 253         size = sizeof(*skl_module->mod_info);
 254         skl_module->mod_info = devm_kzalloc(ctx->dev, size, GFP_KERNEL);
 255         if (skl_module->mod_info == NULL) {
 256                 release_firmware(fw);
 257                 return NULL;
 258         }
 259
 260         skl_module->mod_info->mod_id = mod_id;
 261         skl_module->mod_info->fw = fw;
 262         list_add(&skl_module->list, &ctx->module_list);
 263
 264         return skl_module;
 265 }
 266
 267 /* get a module from it's unique ID */
 268 static struct skl_module_table *skl_module_get_from_id(
 269                         struct sst_dsp *ctx, u16 mod_id)
 270 {
 271         struct skl_module_table *module;
 272
 273         if (list_empty(&ctx->module_list)) {
 274                 dev_err(ctx->dev, "Module list is empty\n");
 275                 return NULL;
 276         }
 277
 278         list_for_each_entry(module, &ctx->module_list, list) {
 279                 if (module->mod_info->mod_id == mod_id)
 280                         return module;
 281         }
 282
 283         return NULL;
 284 }
 285
 286 static int skl_transfer_module(struct sst_dsp *ctx,
 287                         struct skl_load_module_info *module)
 288 {
 289         int ret;
 290         struct skl_sst *skl = ctx->thread_context;
 291
 292         ret = ctx->cl_dev.ops.cl_copy_to_dmabuf(ctx, module->fw->data,
 293                                                         module->fw->size);
 294         if (ret < 0)
 295                 return ret;
 296
 297         ret = skl_ipc_load_modules(&skl->ipc, SKL_NUM_MODULES,
 298                                                 (void *)&module->mod_id);
 299         if (ret < 0)
 300                 dev_err(ctx->dev, "Failed to Load module: %d\n", ret);
 301
 302         ctx->cl_dev.ops.cl_stop_dma(ctx);
 303
 304         return ret;
 305 }
 306
 307 static int skl_load_module(struct sst_dsp *ctx, u16 mod_id, char *guid)
 308 {
 309         struct skl_module_table *module_entry = NULL;
 310         int ret = 0;
 311         char mod_name[64]; /* guid str = 32 chars + 4 hyphens */
 312
 313         snprintf(mod_name, sizeof(mod_name), "%s%s%s",
 314                         "intel/dsp_fw_", guid, ".bin");
 315
 316         module_entry = skl_module_get_from_id(ctx, mod_id);
 317         if (module_entry == NULL) {
 318                 module_entry = skl_fill_module_table(ctx, mod_name, mod_id);
 319                 if (module_entry == NULL) {
 320                         dev_err(ctx->dev, "Failed to Load module\n");
 321                         return -EINVAL;
 322                 }
 323         }
 324
 325         if (!module_entry->usage_cnt) {
 326                 ret = skl_transfer_module(ctx, module_entry->mod_info);
 327                 if (ret < 0) {
 328                         dev_err(ctx->dev, "Failed to Load module\n");
 329                         return ret;
 330                 }
 331         }
 332
 333         ret = skl_get_module(ctx, mod_id);
 334
 335         return ret;
 336 }
 337
 338 static int skl_unload_module(struct sst_dsp *ctx, u16 mod_id)
 339 {
 340         int usage_cnt;
 341         struct skl_sst *skl = ctx->thread_context;
 342         int ret = 0;
 343
 344         usage_cnt = skl_put_module(ctx, mod_id);
 345         if (usage_cnt < 0) {
 346                 dev_err(ctx->dev, "Module bad usage cnt!:%d\n", usage_cnt);
 347                 return -EIO;
 348         }
 349         ret = skl_ipc_unload_modules(&skl->ipc,
 350                         SKL_NUM_MODULES, &mod_id);
 351         if (ret < 0) {
 352                 dev_err(ctx->dev, "Failed to UnLoad module\n");
 353                 skl_get_module(ctx, mod_id);
 354                 return ret;
 355         }
 356
 357         return ret;
 358 }
 359
 360 static void skl_clear_module_table(struct sst_dsp *ctx)
 361 {
 362         struct skl_module_table *module, *tmp;
 363
 364         if (list_empty(&ctx->module_list))
 365                 return;
 366
 367         list_for_each_entry_safe(module, tmp, &ctx->module_list, list) {
 368                 list_del(&module->list);
 369                 release_firmware(module->mod_info->fw);
 370         }
 371 }
 372
 373 static struct skl_dsp_fw_ops skl_fw_ops = {
 374         .set_state_D0 = skl_set_dsp_D0,
 375         .set_state_D3 = skl_set_dsp_D3,
 376         .load_fw = skl_load_base_firmware,
 377         .get_fw_errcode = skl_get_errorcode,
 378         .load_mod = skl_load_module,
 379         .unload_mod = skl_unload_module,
 380 };
 381
 382 static struct sst_ops skl_ops = {
 383         .irq_handler = skl_dsp_sst_interrupt,
 384         .write = sst_shim32_write,
 385         .read = sst_shim32_read,
 386         .ram_read = sst_memcpy_fromio_32,
 387         .ram_write = sst_memcpy_toio_32,
 388         .free = skl_dsp_free,
 389 };
 390
 391 static struct sst_dsp_device skl_dev = {
 392         .thread = skl_dsp_irq_thread_handler,
 393         .ops = &skl_ops,
 394 };
 395
 396 int skl_sst_dsp_init(struct device *dev, void __iomem *mmio_base, int irq,
 397                 const char *fw_name, struct skl_dsp_loader_ops dsp_ops, struct skl_sst **dsp)
 398 {
 399         struct skl_sst *skl;
 400         struct sst_dsp *sst;
 401         int ret;
 402
 403         skl = devm_kzalloc(dev, sizeof(*skl), GFP_KERNEL);
 404         if (skl == NULL)
 405                 return -ENOMEM;
 406
 407         skl->dev = dev;
 408         skl_dev.thread_context = skl;
 409
 410         skl->dsp = skl_dsp_ctx_init(dev, &skl_dev, irq);
 411         if (!skl->dsp) {
 412                 dev_err(skl->dev, "%s: no device\n", __func__);
 413                 return -ENODEV;
 414         }
 415
 416         sst = skl->dsp;
 417
 418         sst->fw_name = fw_name;
 419         sst->addr.lpe = mmio_base;
 420         sst->addr.shim = mmio_base;
 421         sst_dsp_mailbox_init(sst, (SKL_ADSP_SRAM0_BASE + SKL_ADSP_W0_STAT_SZ),
 422                         SKL_ADSP_W0_UP_SZ, SKL_ADSP_SRAM1_BASE, SKL_ADSP_W1_SZ);
 423
 424         INIT_LIST_HEAD(&sst->module_list);
 425         sst->dsp_ops = dsp_ops;
 426         sst->fw_ops = skl_fw_ops;
 427
 428         ret = skl_ipc_init(dev, skl);
 429         if (ret)
 430                 return ret;
 431
 432         ret = sst->fw_ops.load_fw(sst);
 433         if (ret < 0) {
 434                 dev_err(dev, "Load base fw failed : %d", ret);
 435                 goto cleanup;
 436         }
 437
 438         if (dsp)
 439                 *dsp = skl;
 440
 441         return ret;
 442
 443 cleanup:
 444         skl_sst_dsp_cleanup(dev, skl);
 445         return ret;
 446 }
 447 EXPORT_SYMBOL_GPL(skl_sst_dsp_init);
 448
 449 void skl_sst_dsp_cleanup(struct device *dev, struct skl_sst *ctx)
 450 {
 451         skl_clear_module_table(ctx->dsp);
 452         skl_ipc_free(&ctx->ipc);
 453         ctx->dsp->ops->free(ctx->dsp);
 454 }
 455 EXPORT_SYMBOL_GPL(skl_sst_dsp_cleanup);
 456
 457 MODULE_LICENSE("GPL v2");
 458 MODULE_DESCRIPTION("Intel Skylake IPC driver");