sound/soc/intel/common/sst-dsp-priv.h

   1 /*
   2  * Intel Smart Sound Technology
   3  *
   4  * Copyright (C) 2013, Intel Corporation. All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License version
   8  * 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  */
  16
  17 #ifndef __SOUND_SOC_SST_DSP_PRIV_H
  18 #define __SOUND_SOC_SST_DSP_PRIV_H
  19
  20 #include <linux/kernel.h>
  21 #include <linux/types.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/firmware.h>
  24
  25 #include "../skylake/skl-sst-dsp.h"
  26
  27 struct sst_mem_block;
  28 struct sst_module;
  29 struct sst_fw;
  30
  31 /* do we need to remove or keep */
  32 #define DSP_DRAM_ADDR_OFFSET            0x400000
  33
  34 /*
  35  * DSP Operations exported by platform Audio DSP driver.
  36  */
  37 struct sst_ops {
  38         /* DSP core boot / reset */
  39         void (*boot)(struct sst_dsp *);
  40         void (*reset)(struct sst_dsp *);
  41         int (*wake)(struct sst_dsp *);
  42         void (*sleep)(struct sst_dsp *);
  43         void (*stall)(struct sst_dsp *);
  44
  45         /* Shim IO */
  46         void (*write)(void __iomem *addr, u32 offset, u32 value);
  47         u32 (*read)(void __iomem *addr, u32 offset);
  48         void (*write64)(void __iomem *addr, u32 offset, u64 value);
  49         u64 (*read64)(void __iomem *addr, u32 offset);
  50
  51         /* DSP I/DRAM IO */
  52         void (*ram_read)(struct sst_dsp *sst, void  *dest, void __iomem *src,
  53                 size_t bytes);
  54         void (*ram_write)(struct sst_dsp *sst, void __iomem *dest, void *src,
  55                 size_t bytes);
  56
  57         void (*dump)(struct sst_dsp *);
  58
  59         /* IRQ handlers */
  60         irqreturn_t (*irq_handler)(int irq, void *context);
  61
  62         /* SST init and free */
  63         int (*init)(struct sst_dsp *sst, struct sst_pdata *pdata);
  64         void (*free)(struct sst_dsp *sst);
  65
  66         /* FW module parser/loader */
  67         int (*parse_fw)(struct sst_fw *sst_fw);
  68 };
  69
  70 /*
  71  * Audio DSP memory offsets and addresses.
  72  */
  73 struct sst_addr {
  74         u32 lpe_base;
  75         u32 shim_offset;
  76         u32 iram_offset;
  77         u32 dram_offset;
  78         u32 dsp_iram_offset;
  79         u32 dsp_dram_offset;
  80         void __iomem *lpe;
  81         void __iomem *shim;
  82         void __iomem *pci_cfg;
  83         void __iomem *fw_ext;
  84 };
  85
  86 /*
  87  * Audio DSP Mailbox configuration.
  88  */
  89 struct sst_mailbox {
  90         void __iomem *in_base;
  91         void __iomem *out_base;
  92         size_t in_size;
  93         size_t out_size;
  94 };
  95
  96 /*
  97  * Audio DSP memory block types.
  98  */
  99 enum sst_mem_type {
 100         SST_MEM_IRAM = 0,
 101         SST_MEM_DRAM = 1,
 102         SST_MEM_ANY  = 2,
 103         SST_MEM_CACHE= 3,
 104 };
 105
 106 /*
 107  * Audio DSP Generic Firmware File.
 108  *
 109  * SST Firmware files can consist of 1..N modules. This generic structure is
 110  * used to manage each firmware file and it's modules regardless of SST firmware
 111  * type. A SST driver may load multiple FW files.
 112  */
 113 struct sst_fw {
 114         struct sst_dsp *dsp;
 115
 116         /* base addresses of FW file data */
 117         dma_addr_t dmable_fw_paddr;     /* physical address of fw data */
 118         void *dma_buf;                  /* virtual address of fw data */
 119         u32 size;                       /* size of fw data */
 120
 121         /* lists */
 122         struct list_head list;          /* DSP list of FW */
 123         struct list_head module_list;   /* FW list of modules */
 124
 125         void *private;                  /* core doesn't touch this */
 126 };
 127
 128 /*
 129  * Audio DSP Generic Module Template.
 130  *
 131  * Used to define and register a new FW module. This data is extracted from
 132  * FW module header information.
 133  */
 134 struct sst_module_template {
 135         u32 id;
 136         u32 entry;                      /* entry point */
 137         u32 scratch_size;
 138         u32 persistent_size;
 139 };
 140
 141 /*
 142  * Block Allocator - Used to allocate blocks of DSP memory.
 143  */
 144 struct sst_block_allocator {
 145         u32 id;
 146         u32 offset;
 147         int size;
 148         enum sst_mem_type type;
 149 };
 150
 151 /*
 152  * Runtime Module Instance - A module object can be instanciated multiple
 153  * times within the DSP FW.
 154  */
 155 struct sst_module_runtime {
 156         struct sst_dsp *dsp;
 157         int id;
 158         struct sst_module *module;      /* parent module we belong too */
 159
 160         u32 persistent_offset;          /* private memory offset */
 161         void *private;
 162
 163         struct list_head list;
 164         struct list_head block_list;    /* list of blocks used */
 165 };
 166
 167 /*
 168  * Runtime Module Context - The runtime context must be manually stored by the
 169  * driver prior to enter S3 and restored after leaving S3. This should really be
 170  * part of the memory context saved by the enter D3 message IPC ???
 171  */
 172 struct sst_module_runtime_context {
 173         dma_addr_t dma_buffer;
 174         u32 *buffer;
 175 };
 176
 177 /*
 178  * Audio DSP Module State
 179  */
 180 enum sst_module_state {
 181         SST_MODULE_STATE_UNLOADED = 0,  /* default state */
 182         SST_MODULE_STATE_LOADED,
 183         SST_MODULE_STATE_INITIALIZED,   /* and inactive */
 184         SST_MODULE_STATE_ACTIVE,
 185 };
 186
 187 /*
 188  * Audio DSP Generic Module.
 189  *
 190  * Each Firmware file can consist of 1..N modules. A module can span multiple
 191  * ADSP memory blocks. The simplest FW will be a file with 1 module. A module
 192  * can be instanciated multiple times in the DSP.
 193  */
 194 struct sst_module {
 195         struct sst_dsp *dsp;
 196         struct sst_fw *sst_fw;          /* parent FW we belong too */
 197
 198         /* module configuration */
 199         u32 id;
 200         u32 entry;                      /* module entry point */
 201         s32 offset;                     /* module offset in firmware file */
 202         u32 size;                       /* module size */
 203         u32 scratch_size;               /* global scratch memory required */
 204         u32 persistent_size;            /* private memory required */
 205         enum sst_mem_type type;         /* destination memory type */
 206         u32 data_offset;                /* offset in ADSP memory space */
 207         void *data;                     /* module data */
 208
 209         /* runtime */
 210         u32 usage_count;                /* can be unloaded if count == 0 */
 211         void *private;                  /* core doesn't touch this */
 212
 213         /* lists */
 214         struct list_head block_list;    /* Module list of blocks in use */
 215         struct list_head list;          /* DSP list of modules */
 216         struct list_head list_fw;       /* FW list of modules */
 217         struct list_head runtime_list;  /* list of runtime module objects*/
 218
 219         /* state */
 220         enum sst_module_state state;
 221 };
 222
 223 /*
 224  * SST Memory Block operations.
 225  */
 226 struct sst_block_ops {
 227         int (*enable)(struct sst_mem_block *block);
 228         int (*disable)(struct sst_mem_block *block);
 229 };
 230
 231 /*
 232  * SST Generic Memory Block.
 233  *
 234  * SST ADP  memory has multiple IRAM and DRAM blocks. Some ADSP blocks can be
 235  * power gated.
 236  */
 237 struct sst_mem_block {
 238         struct sst_dsp *dsp;
 239         struct sst_module *module;      /* module that uses this block */
 240
 241         /* block config */
 242         u32 offset;                     /* offset from base */
 243         u32 size;                       /* block size */
 244         u32 index;                      /* block index 0..N */
 245         enum sst_mem_type type;         /* block memory type IRAM/DRAM */
 246         const struct sst_block_ops *ops;/* block operations, if any */
 247
 248         /* block status */
 249         u32 bytes_used;                 /* bytes in use by modules */
 250         void *private;                  /* generic core does not touch this */
 251         int users;                      /* number of modules using this block */
 252
 253         /* block lists */
 254         struct list_head module_list;   /* Module list of blocks */
 255         struct list_head list;          /* Map list of free/used blocks */
 256 };
 257
 258 /*
 259  * Generic SST Shim Interface.
 260  */
 261 struct sst_dsp {
 262
 263         /* Shared for all platforms */
 264
 265         /* runtime */
 266         struct sst_dsp_device *sst_dev;
 267         spinlock_t spinlock;    /* IPC locking */
 268         struct mutex mutex;     /* DSP FW lock */
 269         struct device *dev;
 270         struct device *dma_dev;
 271         void *thread_context;
 272         int irq;
 273         u32 id;
 274
 275         /* operations */
 276         struct sst_ops *ops;
 277
 278         /* debug FS */
 279         struct dentry *debugfs_root;
 280
 281         /* base addresses */
 282         struct sst_addr addr;
 283
 284         /* mailbox */
 285         struct sst_mailbox mailbox;
 286
 287         /* HSW/Byt data */
 288
 289         /* list of free and used ADSP memory blocks */
 290         struct list_head used_block_list;
 291         struct list_head free_block_list;
 292
 293         /* SST FW files loaded and their modules */
 294         struct list_head module_list;
 295         struct list_head fw_list;
 296
 297         /* scratch buffer */
 298         struct list_head scratch_block_list;
 299         u32 scratch_offset;
 300         u32 scratch_size;
 301
 302         /* platform data */
 303         struct sst_pdata *pdata;
 304
 305         /* DMA FW loading */
 306         struct sst_dma *dma;
 307         bool fw_use_dma;
 308
 309         /* SKL data */
 310
 311         const char *fw_name;
 312
 313         /* To allocate CL dma buffers */
 314         struct skl_dsp_loader_ops dsp_ops;
 315         struct skl_dsp_fw_ops fw_ops;
 316         int sst_state;
 317         struct skl_cl_dev cl_dev;
 318         u32 intr_status;
 319         const struct firmware *fw;
 320         struct snd_dma_buffer dmab;
 321 };
 322
 323 /* Size optimised DRAM/IRAM memcpy */
 324 static inline void sst_dsp_write(struct sst_dsp *sst, void *src,
 325         u32 dest_offset, size_t bytes)
 326 {
 327         sst->ops->ram_write(sst, sst->addr.lpe + dest_offset, src, bytes);
 328 }
 329
 330 static inline void sst_dsp_read(struct sst_dsp *sst, void *dest,
 331         u32 src_offset, size_t bytes)
 332 {
 333         sst->ops->ram_read(sst, dest, sst->addr.lpe + src_offset, bytes);
 334 }
 335
 336 static inline void *sst_dsp_get_thread_context(struct sst_dsp *sst)
 337 {
 338         return sst->thread_context;
 339 }
 340
 341 /* Create/Free FW files - can contain multiple modules */
 342 struct sst_fw *sst_fw_new(struct sst_dsp *dsp,
 343         const struct firmware *fw, void *private);
 344 void sst_fw_free(struct sst_fw *sst_fw);
 345 void sst_fw_free_all(struct sst_dsp *dsp);
 346 int sst_fw_reload(struct sst_fw *sst_fw);
 347 void sst_fw_unload(struct sst_fw *sst_fw);
 348
 349 /* Create/Free firmware modules */
 350 struct sst_module *sst_module_new(struct sst_fw *sst_fw,
 351         struct sst_module_template *template, void *private);
 352 void sst_module_free(struct sst_module *module);
 353 struct sst_module *sst_module_get_from_id(struct sst_dsp *dsp, u32 id);
 354 int sst_module_alloc_blocks(struct sst_module *module);
 355 int sst_module_free_blocks(struct sst_module *module);
 356
 357 /* Create/Free firmware module runtime instances */
 358 struct sst_module_runtime *sst_module_runtime_new(struct sst_module *module,
 359         int id, void *private);
 360 void sst_module_runtime_free(struct sst_module_runtime *runtime);
 361 struct sst_module_runtime *sst_module_runtime_get_from_id(
 362         struct sst_module *module, u32 id);
 363 int sst_module_runtime_alloc_blocks(struct sst_module_runtime *runtime,
 364         int offset);
 365 int sst_module_runtime_free_blocks(struct sst_module_runtime *runtime);
 366 int sst_module_runtime_save(struct sst_module_runtime *runtime,
 367         struct sst_module_runtime_context *context);
 368 int sst_module_runtime_restore(struct sst_module_runtime *runtime,
 369         struct sst_module_runtime_context *context);
 370
 371 /* generic block allocation */
 372 int sst_alloc_blocks(struct sst_dsp *dsp, struct sst_block_allocator *ba,
 373         struct list_head *block_list);
 374 int sst_free_blocks(struct sst_dsp *dsp, struct list_head *block_list);
 375
 376 /* scratch allocation */
 377 int sst_block_alloc_scratch(struct sst_dsp *dsp);
 378 void sst_block_free_scratch(struct sst_dsp *dsp);
 379
 380 /* Register the DSPs memory blocks - would be nice to read from ACPI */
 381 struct sst_mem_block *sst_mem_block_register(struct sst_dsp *dsp, u32 offset,
 382         u32 size, enum sst_mem_type type, const struct sst_block_ops *ops,
 383         u32 index, void *private);
 384 void sst_mem_block_unregister_all(struct sst_dsp *dsp);
 385
 386 /* Create/Free DMA resources */
 387 int sst_dma_new(struct sst_dsp *sst);
 388 void sst_dma_free(struct sst_dma *dma);
 389
 390 u32 sst_dsp_get_offset(struct sst_dsp *dsp, u32 offset,
 391         enum sst_mem_type type);
 392 #endif