Mark Brown | a4b1299 | 2014-03-12 23:04:35 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Intel Smart Sound Technology (SST) DSP Core Driver |
| 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 | #include <linux/slab.h> |
| 18 | #include <linux/export.h> |
| 19 | #include <linux/interrupt.h> |
| 20 | #include <linux/module.h> |
| 21 | #include <linux/platform_device.h> |
| 22 | #include <linux/io.h> |
| 23 | |
| 24 | #include "sst-dsp.h" |
| 25 | #include "sst-dsp-priv.h" |
| 26 | |
| 27 | #define CREATE_TRACE_POINTS |
| 28 | #include <trace/events/intel-sst.h> |
| 29 | |
| 30 | /* Internal generic low-level SST IO functions - can be overidden */ |
| 31 | void sst_shim32_write(void __iomem *addr, u32 offset, u32 value) |
| 32 | { |
| 33 | writel(value, addr + offset); |
| 34 | } |
| 35 | EXPORT_SYMBOL_GPL(sst_shim32_write); |
| 36 | |
| 37 | u32 sst_shim32_read(void __iomem *addr, u32 offset) |
| 38 | { |
| 39 | return readl(addr + offset); |
| 40 | } |
| 41 | EXPORT_SYMBOL_GPL(sst_shim32_read); |
| 42 | |
| 43 | void sst_shim32_write64(void __iomem *addr, u32 offset, u64 value) |
| 44 | { |
| 45 | memcpy_toio(addr + offset, &value, sizeof(value)); |
| 46 | } |
| 47 | EXPORT_SYMBOL_GPL(sst_shim32_write64); |
| 48 | |
| 49 | u64 sst_shim32_read64(void __iomem *addr, u32 offset) |
| 50 | { |
| 51 | u64 val; |
| 52 | |
| 53 | memcpy_fromio(&val, addr + offset, sizeof(val)); |
| 54 | return val; |
| 55 | } |
| 56 | EXPORT_SYMBOL_GPL(sst_shim32_read64); |
| 57 | |
| 58 | static inline void _sst_memcpy_toio_32(volatile u32 __iomem *dest, |
| 59 | u32 *src, size_t bytes) |
| 60 | { |
| 61 | int i, words = bytes >> 2; |
| 62 | |
| 63 | for (i = 0; i < words; i++) |
| 64 | writel(src[i], dest + i); |
| 65 | } |
| 66 | |
| 67 | static inline void _sst_memcpy_fromio_32(u32 *dest, |
| 68 | const volatile __iomem u32 *src, size_t bytes) |
| 69 | { |
| 70 | int i, words = bytes >> 2; |
| 71 | |
| 72 | for (i = 0; i < words; i++) |
| 73 | dest[i] = readl(src + i); |
| 74 | } |
| 75 | |
| 76 | void sst_memcpy_toio_32(struct sst_dsp *sst, |
| 77 | void __iomem *dest, void *src, size_t bytes) |
| 78 | { |
| 79 | _sst_memcpy_toio_32(dest, src, bytes); |
| 80 | } |
| 81 | EXPORT_SYMBOL_GPL(sst_memcpy_toio_32); |
| 82 | |
| 83 | void sst_memcpy_fromio_32(struct sst_dsp *sst, void *dest, |
| 84 | void __iomem *src, size_t bytes) |
| 85 | { |
| 86 | _sst_memcpy_fromio_32(dest, src, bytes); |
| 87 | } |
| 88 | EXPORT_SYMBOL_GPL(sst_memcpy_fromio_32); |
| 89 | |
| 90 | /* Public API */ |
| 91 | void sst_dsp_shim_write(struct sst_dsp *sst, u32 offset, u32 value) |
| 92 | { |
| 93 | unsigned long flags; |
| 94 | |
| 95 | spin_lock_irqsave(&sst->spinlock, flags); |
| 96 | sst->ops->write(sst->addr.shim, offset, value); |
| 97 | spin_unlock_irqrestore(&sst->spinlock, flags); |
| 98 | } |
| 99 | EXPORT_SYMBOL_GPL(sst_dsp_shim_write); |
| 100 | |
| 101 | u32 sst_dsp_shim_read(struct sst_dsp *sst, u32 offset) |
| 102 | { |
| 103 | unsigned long flags; |
| 104 | u32 val; |
| 105 | |
| 106 | spin_lock_irqsave(&sst->spinlock, flags); |
| 107 | val = sst->ops->read(sst->addr.shim, offset); |
| 108 | spin_unlock_irqrestore(&sst->spinlock, flags); |
| 109 | |
| 110 | return val; |
| 111 | } |
| 112 | EXPORT_SYMBOL_GPL(sst_dsp_shim_read); |
| 113 | |
| 114 | void sst_dsp_shim_write64(struct sst_dsp *sst, u32 offset, u64 value) |
| 115 | { |
| 116 | unsigned long flags; |
| 117 | |
| 118 | spin_lock_irqsave(&sst->spinlock, flags); |
| 119 | sst->ops->write64(sst->addr.shim, offset, value); |
| 120 | spin_unlock_irqrestore(&sst->spinlock, flags); |
| 121 | } |
| 122 | EXPORT_SYMBOL_GPL(sst_dsp_shim_write64); |
| 123 | |
| 124 | u64 sst_dsp_shim_read64(struct sst_dsp *sst, u32 offset) |
| 125 | { |
| 126 | unsigned long flags; |
| 127 | u64 val; |
| 128 | |
| 129 | spin_lock_irqsave(&sst->spinlock, flags); |
| 130 | val = sst->ops->read64(sst->addr.shim, offset); |
| 131 | spin_unlock_irqrestore(&sst->spinlock, flags); |
| 132 | |
| 133 | return val; |
| 134 | } |
| 135 | EXPORT_SYMBOL_GPL(sst_dsp_shim_read64); |
| 136 | |
| 137 | void sst_dsp_shim_write_unlocked(struct sst_dsp *sst, u32 offset, u32 value) |
| 138 | { |
| 139 | sst->ops->write(sst->addr.shim, offset, value); |
| 140 | } |
| 141 | EXPORT_SYMBOL_GPL(sst_dsp_shim_write_unlocked); |
| 142 | |
| 143 | u32 sst_dsp_shim_read_unlocked(struct sst_dsp *sst, u32 offset) |
| 144 | { |
| 145 | return sst->ops->read(sst->addr.shim, offset); |
| 146 | } |
| 147 | EXPORT_SYMBOL_GPL(sst_dsp_shim_read_unlocked); |
| 148 | |
| 149 | void sst_dsp_shim_write64_unlocked(struct sst_dsp *sst, u32 offset, u64 value) |
| 150 | { |
| 151 | sst->ops->write64(sst->addr.shim, offset, value); |
| 152 | } |
| 153 | EXPORT_SYMBOL_GPL(sst_dsp_shim_write64_unlocked); |
| 154 | |
| 155 | u64 sst_dsp_shim_read64_unlocked(struct sst_dsp *sst, u32 offset) |
| 156 | { |
| 157 | return sst->ops->read64(sst->addr.shim, offset); |
| 158 | } |
| 159 | EXPORT_SYMBOL_GPL(sst_dsp_shim_read64_unlocked); |
| 160 | |
| 161 | int sst_dsp_shim_update_bits_unlocked(struct sst_dsp *sst, u32 offset, |
| 162 | u32 mask, u32 value) |
| 163 | { |
| 164 | bool change; |
| 165 | unsigned int old, new; |
| 166 | u32 ret; |
| 167 | |
| 168 | ret = sst_dsp_shim_read_unlocked(sst, offset); |
| 169 | |
| 170 | old = ret; |
| 171 | new = (old & (~mask)) | (value & mask); |
| 172 | |
| 173 | change = (old != new); |
| 174 | if (change) |
| 175 | sst_dsp_shim_write_unlocked(sst, offset, new); |
| 176 | |
| 177 | return change; |
| 178 | } |
| 179 | EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits_unlocked); |
| 180 | |
| 181 | int sst_dsp_shim_update_bits64_unlocked(struct sst_dsp *sst, u32 offset, |
| 182 | u64 mask, u64 value) |
| 183 | { |
| 184 | bool change; |
| 185 | u64 old, new; |
| 186 | |
| 187 | old = sst_dsp_shim_read64_unlocked(sst, offset); |
| 188 | |
| 189 | new = (old & (~mask)) | (value & mask); |
| 190 | |
| 191 | change = (old != new); |
| 192 | if (change) |
| 193 | sst_dsp_shim_write64_unlocked(sst, offset, new); |
| 194 | |
| 195 | return change; |
| 196 | } |
| 197 | EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64_unlocked); |
| 198 | |
| 199 | int sst_dsp_shim_update_bits(struct sst_dsp *sst, u32 offset, |
| 200 | u32 mask, u32 value) |
| 201 | { |
| 202 | unsigned long flags; |
| 203 | bool change; |
| 204 | |
| 205 | spin_lock_irqsave(&sst->spinlock, flags); |
| 206 | change = sst_dsp_shim_update_bits_unlocked(sst, offset, mask, value); |
| 207 | spin_unlock_irqrestore(&sst->spinlock, flags); |
| 208 | return change; |
| 209 | } |
| 210 | EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits); |
| 211 | |
| 212 | int sst_dsp_shim_update_bits64(struct sst_dsp *sst, u32 offset, |
| 213 | u64 mask, u64 value) |
| 214 | { |
| 215 | unsigned long flags; |
| 216 | bool change; |
| 217 | |
| 218 | spin_lock_irqsave(&sst->spinlock, flags); |
| 219 | change = sst_dsp_shim_update_bits64_unlocked(sst, offset, mask, value); |
| 220 | spin_unlock_irqrestore(&sst->spinlock, flags); |
| 221 | return change; |
| 222 | } |
| 223 | EXPORT_SYMBOL_GPL(sst_dsp_shim_update_bits64); |
| 224 | |
| 225 | void sst_dsp_dump(struct sst_dsp *sst) |
| 226 | { |
Liam Girdwood | 30bba67 | 2014-07-30 20:18:32 +0800 | [diff] [blame] | 227 | if (sst->ops->dump) |
| 228 | sst->ops->dump(sst); |
Mark Brown | a4b1299 | 2014-03-12 23:04:35 +0000 | [diff] [blame] | 229 | } |
| 230 | EXPORT_SYMBOL_GPL(sst_dsp_dump); |
| 231 | |
| 232 | void sst_dsp_reset(struct sst_dsp *sst) |
| 233 | { |
Liam Girdwood | 30bba67 | 2014-07-30 20:18:32 +0800 | [diff] [blame] | 234 | if (sst->ops->reset) |
| 235 | sst->ops->reset(sst); |
Mark Brown | a4b1299 | 2014-03-12 23:04:35 +0000 | [diff] [blame] | 236 | } |
| 237 | EXPORT_SYMBOL_GPL(sst_dsp_reset); |
| 238 | |
| 239 | int sst_dsp_boot(struct sst_dsp *sst) |
| 240 | { |
Liam Girdwood | 30bba67 | 2014-07-30 20:18:32 +0800 | [diff] [blame] | 241 | if (sst->ops->boot) |
| 242 | sst->ops->boot(sst); |
| 243 | |
Mark Brown | a4b1299 | 2014-03-12 23:04:35 +0000 | [diff] [blame] | 244 | return 0; |
| 245 | } |
| 246 | EXPORT_SYMBOL_GPL(sst_dsp_boot); |
| 247 | |
Liam Girdwood | d96c53a | 2014-10-29 15:40:28 +0000 | [diff] [blame^] | 248 | int sst_dsp_wake(struct sst_dsp *sst) |
| 249 | { |
| 250 | if (sst->ops->wake) |
| 251 | return sst->ops->wake(sst); |
| 252 | |
| 253 | return 0; |
| 254 | } |
| 255 | EXPORT_SYMBOL_GPL(sst_dsp_wake); |
| 256 | |
| 257 | void sst_dsp_sleep(struct sst_dsp *sst) |
| 258 | { |
| 259 | if (sst->ops->sleep) |
| 260 | sst->ops->sleep(sst); |
| 261 | } |
| 262 | EXPORT_SYMBOL_GPL(sst_dsp_sleep); |
| 263 | |
| 264 | void sst_dsp_stall(struct sst_dsp *sst) |
| 265 | { |
| 266 | if (sst->ops->stall) |
| 267 | sst->ops->stall(sst); |
| 268 | } |
| 269 | EXPORT_SYMBOL_GPL(sst_dsp_stall); |
| 270 | |
Mark Brown | a4b1299 | 2014-03-12 23:04:35 +0000 | [diff] [blame] | 271 | void sst_dsp_ipc_msg_tx(struct sst_dsp *dsp, u32 msg) |
| 272 | { |
| 273 | sst_dsp_shim_write_unlocked(dsp, SST_IPCX, msg | SST_IPCX_BUSY); |
| 274 | trace_sst_ipc_msg_tx(msg); |
| 275 | } |
| 276 | EXPORT_SYMBOL_GPL(sst_dsp_ipc_msg_tx); |
| 277 | |
| 278 | u32 sst_dsp_ipc_msg_rx(struct sst_dsp *dsp) |
| 279 | { |
| 280 | u32 msg; |
| 281 | |
| 282 | msg = sst_dsp_shim_read_unlocked(dsp, SST_IPCX); |
| 283 | trace_sst_ipc_msg_rx(msg); |
| 284 | |
| 285 | return msg; |
| 286 | } |
| 287 | EXPORT_SYMBOL_GPL(sst_dsp_ipc_msg_rx); |
| 288 | |
| 289 | int sst_dsp_mailbox_init(struct sst_dsp *sst, u32 inbox_offset, size_t inbox_size, |
| 290 | u32 outbox_offset, size_t outbox_size) |
| 291 | { |
| 292 | sst->mailbox.in_base = sst->addr.lpe + inbox_offset; |
| 293 | sst->mailbox.out_base = sst->addr.lpe + outbox_offset; |
| 294 | sst->mailbox.in_size = inbox_size; |
| 295 | sst->mailbox.out_size = outbox_size; |
| 296 | return 0; |
| 297 | } |
| 298 | EXPORT_SYMBOL_GPL(sst_dsp_mailbox_init); |
| 299 | |
| 300 | void sst_dsp_outbox_write(struct sst_dsp *sst, void *message, size_t bytes) |
| 301 | { |
| 302 | u32 i; |
| 303 | |
| 304 | trace_sst_ipc_outbox_write(bytes); |
| 305 | |
| 306 | memcpy_toio(sst->mailbox.out_base, message, bytes); |
| 307 | |
| 308 | for (i = 0; i < bytes; i += 4) |
| 309 | trace_sst_ipc_outbox_wdata(i, *(u32 *)(message + i)); |
| 310 | } |
| 311 | EXPORT_SYMBOL_GPL(sst_dsp_outbox_write); |
| 312 | |
| 313 | void sst_dsp_outbox_read(struct sst_dsp *sst, void *message, size_t bytes) |
| 314 | { |
| 315 | u32 i; |
| 316 | |
| 317 | trace_sst_ipc_outbox_read(bytes); |
| 318 | |
| 319 | memcpy_fromio(message, sst->mailbox.out_base, bytes); |
| 320 | |
| 321 | for (i = 0; i < bytes; i += 4) |
| 322 | trace_sst_ipc_outbox_rdata(i, *(u32 *)(message + i)); |
| 323 | } |
| 324 | EXPORT_SYMBOL_GPL(sst_dsp_outbox_read); |
| 325 | |
| 326 | void sst_dsp_inbox_write(struct sst_dsp *sst, void *message, size_t bytes) |
| 327 | { |
| 328 | u32 i; |
| 329 | |
| 330 | trace_sst_ipc_inbox_write(bytes); |
| 331 | |
| 332 | memcpy_toio(sst->mailbox.in_base, message, bytes); |
| 333 | |
| 334 | for (i = 0; i < bytes; i += 4) |
| 335 | trace_sst_ipc_inbox_wdata(i, *(u32 *)(message + i)); |
| 336 | } |
| 337 | EXPORT_SYMBOL_GPL(sst_dsp_inbox_write); |
| 338 | |
| 339 | void sst_dsp_inbox_read(struct sst_dsp *sst, void *message, size_t bytes) |
| 340 | { |
| 341 | u32 i; |
| 342 | |
| 343 | trace_sst_ipc_inbox_read(bytes); |
| 344 | |
| 345 | memcpy_fromio(message, sst->mailbox.in_base, bytes); |
| 346 | |
| 347 | for (i = 0; i < bytes; i += 4) |
| 348 | trace_sst_ipc_inbox_rdata(i, *(u32 *)(message + i)); |
| 349 | } |
| 350 | EXPORT_SYMBOL_GPL(sst_dsp_inbox_read); |
| 351 | |
| 352 | struct sst_dsp *sst_dsp_new(struct device *dev, |
| 353 | struct sst_dsp_device *sst_dev, struct sst_pdata *pdata) |
| 354 | { |
| 355 | struct sst_dsp *sst; |
| 356 | int err; |
| 357 | |
| 358 | dev_dbg(dev, "initialising audio DSP id 0x%x\n", pdata->id); |
| 359 | |
| 360 | sst = devm_kzalloc(dev, sizeof(*sst), GFP_KERNEL); |
| 361 | if (sst == NULL) |
| 362 | return NULL; |
| 363 | |
| 364 | spin_lock_init(&sst->spinlock); |
| 365 | mutex_init(&sst->mutex); |
| 366 | sst->dev = dev; |
Liam Girdwood | 10df350 | 2014-05-02 16:56:31 +0100 | [diff] [blame] | 367 | sst->dma_dev = pdata->dma_dev; |
Mark Brown | a4b1299 | 2014-03-12 23:04:35 +0000 | [diff] [blame] | 368 | sst->thread_context = sst_dev->thread_context; |
| 369 | sst->sst_dev = sst_dev; |
| 370 | sst->id = pdata->id; |
| 371 | sst->irq = pdata->irq; |
| 372 | sst->ops = sst_dev->ops; |
| 373 | sst->pdata = pdata; |
| 374 | INIT_LIST_HEAD(&sst->used_block_list); |
| 375 | INIT_LIST_HEAD(&sst->free_block_list); |
| 376 | INIT_LIST_HEAD(&sst->module_list); |
| 377 | INIT_LIST_HEAD(&sst->fw_list); |
Liam Girdwood | e9600bc | 2014-10-28 17:37:12 +0000 | [diff] [blame] | 378 | INIT_LIST_HEAD(&sst->scratch_block_list); |
Mark Brown | a4b1299 | 2014-03-12 23:04:35 +0000 | [diff] [blame] | 379 | |
| 380 | /* Initialise SST Audio DSP */ |
| 381 | if (sst->ops->init) { |
| 382 | err = sst->ops->init(sst, pdata); |
| 383 | if (err < 0) |
| 384 | return NULL; |
| 385 | } |
| 386 | |
| 387 | /* Register the ISR */ |
| 388 | err = request_threaded_irq(sst->irq, sst->ops->irq_handler, |
| 389 | sst_dev->thread, IRQF_SHARED, "AudioDSP", sst); |
| 390 | if (err) |
| 391 | goto irq_err; |
| 392 | |
Liam Girdwood | e9600bc | 2014-10-28 17:37:12 +0000 | [diff] [blame] | 393 | err = sst_dma_new(sst); |
| 394 | if (err) |
| 395 | dev_warn(dev, "sst_dma_new failed %d\n", err); |
| 396 | |
Mark Brown | a4b1299 | 2014-03-12 23:04:35 +0000 | [diff] [blame] | 397 | return sst; |
| 398 | |
| 399 | irq_err: |
| 400 | if (sst->ops->free) |
| 401 | sst->ops->free(sst); |
| 402 | |
| 403 | return NULL; |
| 404 | } |
| 405 | EXPORT_SYMBOL_GPL(sst_dsp_new); |
| 406 | |
| 407 | void sst_dsp_free(struct sst_dsp *sst) |
| 408 | { |
| 409 | free_irq(sst->irq, sst); |
| 410 | if (sst->ops->free) |
| 411 | sst->ops->free(sst); |
Liam Girdwood | e9600bc | 2014-10-28 17:37:12 +0000 | [diff] [blame] | 412 | |
| 413 | if (sst->dma) |
| 414 | sst_dma_free(sst->dma); |
Mark Brown | a4b1299 | 2014-03-12 23:04:35 +0000 | [diff] [blame] | 415 | } |
| 416 | EXPORT_SYMBOL_GPL(sst_dsp_free); |
| 417 | |
| 418 | /* Module information */ |
| 419 | MODULE_AUTHOR("Liam Girdwood"); |
| 420 | MODULE_DESCRIPTION("Intel SST Core"); |
| 421 | MODULE_LICENSE("GPL v2"); |