2 * Intel SST Firmware Loader
4 * Copyright (C) 2013, Intel Corporation. All rights reserved.
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.
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.
17 #include <linux/kernel.h>
18 #include <linux/slab.h>
19 #include <linux/sched.h>
20 #include <linux/firmware.h>
21 #include <linux/export.h>
22 #include <linux/platform_device.h>
23 #include <linux/dma-mapping.h>
24 #include <linux/dmaengine.h>
25 #include <linux/pci.h>
26 #include <linux/acpi.h>
28 /* supported DMA engine drivers */
29 #include <linux/dma/dw.h>
32 #include <asm/pgtable.h>
35 #include "sst-dsp-priv.h"
37 #define SST_DMA_RESOURCES 2
38 #define SST_DSP_DMA_MAX_BURST 0x3
39 #define SST_HSW_BLOCK_ANY 0xffffffff
41 #define SST_HSW_MASK_DMA_ADDR_DSP 0xfff00000
46 struct dw_dma_chip *chip;
48 struct dma_async_tx_descriptor *desc;
52 static inline void sst_memcpy32(volatile void __iomem *dest, void *src, u32 bytes)
56 const u8 *src_byte = src;
61 /* __iowrite32_copy use 32bit size values so divide by 4 */
62 __iowrite32_copy((void *)dest, src, m);
65 for (i = 0; i < n; i++)
66 tmp |= (u32)*(src_byte + m * 4 + i) << (i * 8);
67 __iowrite32_copy((void *)(dest + m * 4), &tmp, 1);
72 static void sst_dma_transfer_complete(void *arg)
74 struct sst_dsp *sst = (struct sst_dsp *)arg;
76 dev_dbg(sst->dev, "DMA: callback\n");
79 static int sst_dsp_dma_copy(struct sst_dsp *sst, dma_addr_t dest_addr,
80 dma_addr_t src_addr, size_t size)
82 struct dma_async_tx_descriptor *desc;
83 struct sst_dma *dma = sst->dma;
85 if (dma->ch == NULL) {
86 dev_err(sst->dev, "error: no DMA channel\n");
90 dev_dbg(sst->dev, "DMA: src: 0x%lx dest 0x%lx size %zu\n",
91 (unsigned long)src_addr, (unsigned long)dest_addr, size);
93 desc = dma->ch->device->device_prep_dma_memcpy(dma->ch, dest_addr,
94 src_addr, size, DMA_CTRL_ACK);
96 dev_err(sst->dev, "error: dma prep memcpy failed\n");
100 desc->callback = sst_dma_transfer_complete;
101 desc->callback_param = sst;
103 desc->tx_submit(desc);
104 dma_wait_for_async_tx(desc);
110 int sst_dsp_dma_copyto(struct sst_dsp *sst, dma_addr_t dest_addr,
111 dma_addr_t src_addr, size_t size)
113 return sst_dsp_dma_copy(sst, dest_addr | SST_HSW_MASK_DMA_ADDR_DSP,
116 EXPORT_SYMBOL_GPL(sst_dsp_dma_copyto);
119 int sst_dsp_dma_copyfrom(struct sst_dsp *sst, dma_addr_t dest_addr,
120 dma_addr_t src_addr, size_t size)
122 return sst_dsp_dma_copy(sst, dest_addr,
123 src_addr | SST_HSW_MASK_DMA_ADDR_DSP, size);
125 EXPORT_SYMBOL_GPL(sst_dsp_dma_copyfrom);
127 /* remove module from memory - callers hold locks */
128 static void block_list_remove(struct sst_dsp *dsp,
129 struct list_head *block_list)
131 struct sst_mem_block *block, *tmp;
134 /* disable each block */
135 list_for_each_entry(block, block_list, module_list) {
137 if (block->ops && block->ops->disable) {
138 err = block->ops->disable(block);
141 "error: cant disable block %d:%d\n",
142 block->type, block->index);
146 /* mark each block as free */
147 list_for_each_entry_safe(block, tmp, block_list, module_list) {
148 list_del(&block->module_list);
149 list_move(&block->list, &dsp->free_block_list);
150 dev_dbg(dsp->dev, "block freed %d:%d at offset 0x%x\n",
151 block->type, block->index, block->offset);
155 /* prepare the memory block to receive data from host - callers hold locks */
156 static int block_list_prepare(struct sst_dsp *dsp,
157 struct list_head *block_list)
159 struct sst_mem_block *block;
162 /* enable each block so that's it'e ready for data */
163 list_for_each_entry(block, block_list, module_list) {
165 if (block->ops && block->ops->enable && !block->users) {
166 ret = block->ops->enable(block);
169 "error: cant disable block %d:%d\n",
170 block->type, block->index);
178 list_for_each_entry(block, block_list, module_list) {
179 if (block->ops && block->ops->disable)
180 block->ops->disable(block);
185 static struct dw_dma_chip *dw_probe(struct device *dev, struct resource *mem,
188 struct dw_dma_chip *chip;
191 chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
193 return ERR_PTR(-ENOMEM);
196 chip->regs = devm_ioremap_resource(dev, mem);
197 if (IS_ERR(chip->regs))
198 return ERR_CAST(chip->regs);
200 err = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(31));
206 err = dw_dma_probe(chip);
213 static void dw_remove(struct dw_dma_chip *chip)
218 static bool dma_chan_filter(struct dma_chan *chan, void *param)
220 struct sst_dsp *dsp = (struct sst_dsp *)param;
222 return chan->device->dev == dsp->dma_dev;
225 int sst_dsp_dma_get_channel(struct sst_dsp *dsp, int chan_id)
227 struct sst_dma *dma = dsp->dma;
228 struct dma_slave_config slave;
233 dma_cap_set(DMA_SLAVE, mask);
234 dma_cap_set(DMA_MEMCPY, mask);
236 dma->ch = dma_request_channel(mask, dma_chan_filter, dsp);
237 if (dma->ch == NULL) {
238 dev_err(dsp->dev, "error: DMA request channel failed\n");
242 memset(&slave, 0, sizeof(slave));
243 slave.direction = DMA_MEM_TO_DEV;
244 slave.src_addr_width =
245 slave.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
246 slave.src_maxburst = slave.dst_maxburst = SST_DSP_DMA_MAX_BURST;
248 ret = dmaengine_slave_config(dma->ch, &slave);
250 dev_err(dsp->dev, "error: unable to set DMA slave config %d\n",
252 dma_release_channel(dma->ch);
258 EXPORT_SYMBOL_GPL(sst_dsp_dma_get_channel);
260 void sst_dsp_dma_put_channel(struct sst_dsp *dsp)
262 struct sst_dma *dma = dsp->dma;
267 dma_release_channel(dma->ch);
270 EXPORT_SYMBOL_GPL(sst_dsp_dma_put_channel);
272 int sst_dma_new(struct sst_dsp *sst)
274 struct sst_pdata *sst_pdata = sst->pdata;
277 const char *dma_dev_name;
280 if (sst->pdata->resindex_dma_base == -1)
281 /* DMA is not used, return and squelsh error messages */
284 /* configure the correct platform data for whatever DMA engine
285 * is attached to the ADSP IP. */
286 switch (sst->pdata->dma_engine) {
287 case SST_DMA_TYPE_DW:
288 dma_dev_name = "dw_dmac";
291 dev_err(sst->dev, "error: invalid DMA engine %d\n",
292 sst->pdata->dma_engine);
296 dma = devm_kzalloc(sst->dev, sizeof(struct sst_dma), GFP_KERNEL);
302 memset(&mem, 0, sizeof(mem));
304 mem.start = sst->addr.lpe_base + sst_pdata->dma_base;
305 mem.end = sst->addr.lpe_base + sst_pdata->dma_base + sst_pdata->dma_size - 1;
306 mem.flags = IORESOURCE_MEM;
308 /* now register DMA engine device */
309 dma->chip = dw_probe(sst->dma_dev, &mem, sst_pdata->irq);
310 if (IS_ERR(dma->chip)) {
311 dev_err(sst->dev, "error: DMA device register failed\n");
312 ret = PTR_ERR(dma->chip);
317 sst->fw_use_dma = true;
321 devm_kfree(sst->dev, dma);
324 EXPORT_SYMBOL(sst_dma_new);
326 void sst_dma_free(struct sst_dma *dma)
333 dma_release_channel(dma->ch);
336 dw_remove(dma->chip);
339 EXPORT_SYMBOL(sst_dma_free);
341 /* create new generic firmware object */
342 struct sst_fw *sst_fw_new(struct sst_dsp *dsp,
343 const struct firmware *fw, void *private)
345 struct sst_fw *sst_fw;
348 if (!dsp->ops->parse_fw)
351 sst_fw = kzalloc(sizeof(*sst_fw), GFP_KERNEL);
356 sst_fw->private = private;
357 sst_fw->size = fw->size;
359 /* allocate DMA buffer to store FW data */
360 sst_fw->dma_buf = dma_alloc_coherent(dsp->dma_dev, sst_fw->size,
361 &sst_fw->dmable_fw_paddr, GFP_DMA | GFP_KERNEL);
362 if (!sst_fw->dma_buf) {
363 dev_err(dsp->dev, "error: DMA alloc failed\n");
368 /* copy FW data to DMA-able memory */
369 memcpy((void *)sst_fw->dma_buf, (void *)fw->data, fw->size);
371 if (dsp->fw_use_dma) {
372 err = sst_dsp_dma_get_channel(dsp, 0);
377 /* call core specific FW paser to load FW data into DSP */
378 err = dsp->ops->parse_fw(sst_fw);
380 dev_err(dsp->dev, "error: parse fw failed %d\n", err);
385 sst_dsp_dma_put_channel(dsp);
387 mutex_lock(&dsp->mutex);
388 list_add(&sst_fw->list, &dsp->fw_list);
389 mutex_unlock(&dsp->mutex);
395 sst_dsp_dma_put_channel(dsp);
397 dma_free_coherent(dsp->dma_dev, sst_fw->size,
399 sst_fw->dmable_fw_paddr);
400 sst_fw->dma_buf = NULL;
404 EXPORT_SYMBOL_GPL(sst_fw_new);
406 int sst_fw_reload(struct sst_fw *sst_fw)
408 struct sst_dsp *dsp = sst_fw->dsp;
411 dev_dbg(dsp->dev, "reloading firmware\n");
413 /* call core specific FW paser to load FW data into DSP */
414 ret = dsp->ops->parse_fw(sst_fw);
416 dev_err(dsp->dev, "error: parse fw failed %d\n", ret);
420 EXPORT_SYMBOL_GPL(sst_fw_reload);
422 void sst_fw_unload(struct sst_fw *sst_fw)
424 struct sst_dsp *dsp = sst_fw->dsp;
425 struct sst_module *module, *mtmp;
426 struct sst_module_runtime *runtime, *rtmp;
428 dev_dbg(dsp->dev, "unloading firmware\n");
430 mutex_lock(&dsp->mutex);
432 /* check module by module */
433 list_for_each_entry_safe(module, mtmp, &dsp->module_list, list) {
434 if (module->sst_fw == sst_fw) {
436 /* remove runtime modules */
437 list_for_each_entry_safe(runtime, rtmp, &module->runtime_list, list) {
439 block_list_remove(dsp, &runtime->block_list);
440 list_del(&runtime->list);
444 /* now remove the module */
445 block_list_remove(dsp, &module->block_list);
446 list_del(&module->list);
451 /* remove all scratch blocks */
452 block_list_remove(dsp, &dsp->scratch_block_list);
454 mutex_unlock(&dsp->mutex);
456 EXPORT_SYMBOL_GPL(sst_fw_unload);
458 /* free single firmware object */
459 void sst_fw_free(struct sst_fw *sst_fw)
461 struct sst_dsp *dsp = sst_fw->dsp;
463 mutex_lock(&dsp->mutex);
464 list_del(&sst_fw->list);
465 mutex_unlock(&dsp->mutex);
468 dma_free_coherent(dsp->dma_dev, sst_fw->size, sst_fw->dma_buf,
469 sst_fw->dmable_fw_paddr);
472 EXPORT_SYMBOL_GPL(sst_fw_free);
474 /* free all firmware objects */
475 void sst_fw_free_all(struct sst_dsp *dsp)
477 struct sst_fw *sst_fw, *t;
479 mutex_lock(&dsp->mutex);
480 list_for_each_entry_safe(sst_fw, t, &dsp->fw_list, list) {
482 list_del(&sst_fw->list);
483 dma_free_coherent(dsp->dev, sst_fw->size, sst_fw->dma_buf,
484 sst_fw->dmable_fw_paddr);
487 mutex_unlock(&dsp->mutex);
489 EXPORT_SYMBOL_GPL(sst_fw_free_all);
491 /* create a new SST generic module from FW template */
492 struct sst_module *sst_module_new(struct sst_fw *sst_fw,
493 struct sst_module_template *template, void *private)
495 struct sst_dsp *dsp = sst_fw->dsp;
496 struct sst_module *sst_module;
498 sst_module = kzalloc(sizeof(*sst_module), GFP_KERNEL);
499 if (sst_module == NULL)
502 sst_module->id = template->id;
503 sst_module->dsp = dsp;
504 sst_module->sst_fw = sst_fw;
505 sst_module->scratch_size = template->scratch_size;
506 sst_module->persistent_size = template->persistent_size;
507 sst_module->entry = template->entry;
508 sst_module->state = SST_MODULE_STATE_UNLOADED;
510 INIT_LIST_HEAD(&sst_module->block_list);
511 INIT_LIST_HEAD(&sst_module->runtime_list);
513 mutex_lock(&dsp->mutex);
514 list_add(&sst_module->list, &dsp->module_list);
515 mutex_unlock(&dsp->mutex);
519 EXPORT_SYMBOL_GPL(sst_module_new);
521 /* free firmware module and remove from available list */
522 void sst_module_free(struct sst_module *sst_module)
524 struct sst_dsp *dsp = sst_module->dsp;
526 mutex_lock(&dsp->mutex);
527 list_del(&sst_module->list);
528 mutex_unlock(&dsp->mutex);
532 EXPORT_SYMBOL_GPL(sst_module_free);
534 struct sst_module_runtime *sst_module_runtime_new(struct sst_module *module,
535 int id, void *private)
537 struct sst_dsp *dsp = module->dsp;
538 struct sst_module_runtime *runtime;
540 runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);
546 runtime->module = module;
547 INIT_LIST_HEAD(&runtime->block_list);
549 mutex_lock(&dsp->mutex);
550 list_add(&runtime->list, &module->runtime_list);
551 mutex_unlock(&dsp->mutex);
555 EXPORT_SYMBOL_GPL(sst_module_runtime_new);
557 void sst_module_runtime_free(struct sst_module_runtime *runtime)
559 struct sst_dsp *dsp = runtime->dsp;
561 mutex_lock(&dsp->mutex);
562 list_del(&runtime->list);
563 mutex_unlock(&dsp->mutex);
567 EXPORT_SYMBOL_GPL(sst_module_runtime_free);
569 static struct sst_mem_block *find_block(struct sst_dsp *dsp,
570 struct sst_block_allocator *ba)
572 struct sst_mem_block *block;
574 list_for_each_entry(block, &dsp->free_block_list, list) {
575 if (block->type == ba->type && block->offset == ba->offset)
582 /* Block allocator must be on block boundary */
583 static int block_alloc_contiguous(struct sst_dsp *dsp,
584 struct sst_block_allocator *ba, struct list_head *block_list)
586 struct list_head tmp = LIST_HEAD_INIT(tmp);
587 struct sst_mem_block *block;
588 u32 block_start = SST_HSW_BLOCK_ANY;
589 int size = ba->size, offset = ba->offset;
591 while (ba->size > 0) {
593 block = find_block(dsp, ba);
595 list_splice(&tmp, &dsp->free_block_list);
602 list_move_tail(&block->list, &tmp);
603 ba->offset += block->size;
604 ba->size -= block->size;
609 list_for_each_entry(block, &tmp, list) {
611 if (block->offset < block_start)
612 block_start = block->offset;
614 list_add(&block->module_list, block_list);
616 dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n",
617 block->type, block->index, block->offset);
620 list_splice(&tmp, &dsp->used_block_list);
624 /* allocate first free DSP blocks for data - callers hold locks */
625 static int block_alloc(struct sst_dsp *dsp, struct sst_block_allocator *ba,
626 struct list_head *block_list)
628 struct sst_mem_block *block, *tmp;
634 /* find first free whole blocks that can hold module */
635 list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) {
637 /* ignore blocks with wrong type */
638 if (block->type != ba->type)
641 if (ba->size > block->size)
644 ba->offset = block->offset;
645 block->bytes_used = ba->size % block->size;
646 list_add(&block->module_list, block_list);
647 list_move(&block->list, &dsp->used_block_list);
648 dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n",
649 block->type, block->index, block->offset);
653 /* then find free multiple blocks that can hold module */
654 list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) {
656 /* ignore blocks with wrong type */
657 if (block->type != ba->type)
660 /* do we span > 1 blocks */
661 if (ba->size > block->size) {
663 /* align ba to block boundary */
664 ba->offset = block->offset;
666 ret = block_alloc_contiguous(dsp, ba, block_list);
673 /* not enough free block space */
677 int sst_alloc_blocks(struct sst_dsp *dsp, struct sst_block_allocator *ba,
678 struct list_head *block_list)
682 dev_dbg(dsp->dev, "block request 0x%x bytes at offset 0x%x type %d\n",
683 ba->size, ba->offset, ba->type);
685 mutex_lock(&dsp->mutex);
687 ret = block_alloc(dsp, ba, block_list);
689 dev_err(dsp->dev, "error: can't alloc blocks %d\n", ret);
693 /* prepare DSP blocks for module usage */
694 ret = block_list_prepare(dsp, block_list);
696 dev_err(dsp->dev, "error: prepare failed\n");
699 mutex_unlock(&dsp->mutex);
702 EXPORT_SYMBOL_GPL(sst_alloc_blocks);
704 int sst_free_blocks(struct sst_dsp *dsp, struct list_head *block_list)
706 mutex_lock(&dsp->mutex);
707 block_list_remove(dsp, block_list);
708 mutex_unlock(&dsp->mutex);
711 EXPORT_SYMBOL_GPL(sst_free_blocks);
713 /* allocate memory blocks for static module addresses - callers hold locks */
714 static int block_alloc_fixed(struct sst_dsp *dsp, struct sst_block_allocator *ba,
715 struct list_head *block_list)
717 struct sst_mem_block *block, *tmp;
718 struct sst_block_allocator ba_tmp = *ba;
719 u32 end = ba->offset + ba->size, block_end;
722 /* only IRAM/DRAM blocks are managed */
723 if (ba->type != SST_MEM_IRAM && ba->type != SST_MEM_DRAM)
726 /* are blocks already attached to this module */
727 list_for_each_entry_safe(block, tmp, block_list, module_list) {
729 /* ignore blocks with wrong type */
730 if (block->type != ba->type)
733 block_end = block->offset + block->size;
735 /* find block that holds section */
736 if (ba->offset >= block->offset && end <= block_end)
739 /* does block span more than 1 section */
740 if (ba->offset >= block->offset && ba->offset < block_end) {
742 /* align ba to block boundary */
743 ba_tmp.size -= block_end - ba->offset;
744 ba_tmp.offset = block_end;
745 err = block_alloc_contiguous(dsp, &ba_tmp, block_list);
749 /* module already owns blocks */
754 /* find first free blocks that can hold section in free list */
755 list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) {
756 block_end = block->offset + block->size;
758 /* ignore blocks with wrong type */
759 if (block->type != ba->type)
762 /* find block that holds section */
763 if (ba->offset >= block->offset && end <= block_end) {
766 list_move(&block->list, &dsp->used_block_list);
767 list_add(&block->module_list, block_list);
768 dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n",
769 block->type, block->index, block->offset);
773 /* does block span more than 1 section */
774 if (ba->offset >= block->offset && ba->offset < block_end) {
777 list_move(&block->list, &dsp->used_block_list);
778 list_add(&block->module_list, block_list);
779 /* align ba to block boundary */
780 ba_tmp.size -= block_end - ba->offset;
781 ba_tmp.offset = block_end;
783 err = block_alloc_contiguous(dsp, &ba_tmp, block_list);
794 /* Load fixed module data into DSP memory blocks */
795 int sst_module_alloc_blocks(struct sst_module *module)
797 struct sst_dsp *dsp = module->dsp;
798 struct sst_fw *sst_fw = module->sst_fw;
799 struct sst_block_allocator ba;
802 memset(&ba, 0, sizeof(ba));
803 ba.size = module->size;
804 ba.type = module->type;
805 ba.offset = module->offset;
807 dev_dbg(dsp->dev, "block request 0x%x bytes at offset 0x%x type %d\n",
808 ba.size, ba.offset, ba.type);
810 mutex_lock(&dsp->mutex);
812 /* alloc blocks that includes this section */
813 ret = block_alloc_fixed(dsp, &ba, &module->block_list);
816 "error: no free blocks for section at offset 0x%x size 0x%x\n",
817 module->offset, module->size);
818 mutex_unlock(&dsp->mutex);
822 /* prepare DSP blocks for module copy */
823 ret = block_list_prepare(dsp, &module->block_list);
825 dev_err(dsp->dev, "error: fw module prepare failed\n");
829 /* copy partial module data to blocks */
830 if (dsp->fw_use_dma) {
831 ret = sst_dsp_dma_copyto(dsp,
832 dsp->addr.lpe_base + module->offset,
833 sst_fw->dmable_fw_paddr + module->data_offset,
836 dev_err(dsp->dev, "error: module copy failed\n");
840 sst_memcpy32(dsp->addr.lpe + module->offset, module->data,
843 mutex_unlock(&dsp->mutex);
847 block_list_remove(dsp, &module->block_list);
848 mutex_unlock(&dsp->mutex);
851 EXPORT_SYMBOL_GPL(sst_module_alloc_blocks);
853 /* Unload entire module from DSP memory */
854 int sst_module_free_blocks(struct sst_module *module)
856 struct sst_dsp *dsp = module->dsp;
858 mutex_lock(&dsp->mutex);
859 block_list_remove(dsp, &module->block_list);
860 mutex_unlock(&dsp->mutex);
863 EXPORT_SYMBOL_GPL(sst_module_free_blocks);
865 int sst_module_runtime_alloc_blocks(struct sst_module_runtime *runtime,
868 struct sst_dsp *dsp = runtime->dsp;
869 struct sst_module *module = runtime->module;
870 struct sst_block_allocator ba;
873 if (module->persistent_size == 0)
876 memset(&ba, 0, sizeof(ba));
877 ba.size = module->persistent_size;
878 ba.type = SST_MEM_DRAM;
880 mutex_lock(&dsp->mutex);
882 /* do we need to allocate at a fixed address ? */
887 dev_dbg(dsp->dev, "persistent fixed block request 0x%x bytes type %d offset 0x%x\n",
888 ba.size, ba.type, ba.offset);
890 /* alloc blocks that includes this section */
891 ret = block_alloc_fixed(dsp, &ba, &runtime->block_list);
894 dev_dbg(dsp->dev, "persistent block request 0x%x bytes type %d\n",
897 /* alloc blocks that includes this section */
898 ret = block_alloc(dsp, &ba, &runtime->block_list);
902 "error: no free blocks for runtime module size 0x%x\n",
903 module->persistent_size);
904 mutex_unlock(&dsp->mutex);
907 runtime->persistent_offset = ba.offset;
909 /* prepare DSP blocks for module copy */
910 ret = block_list_prepare(dsp, &runtime->block_list);
912 dev_err(dsp->dev, "error: runtime block prepare failed\n");
916 mutex_unlock(&dsp->mutex);
920 block_list_remove(dsp, &module->block_list);
921 mutex_unlock(&dsp->mutex);
924 EXPORT_SYMBOL_GPL(sst_module_runtime_alloc_blocks);
926 int sst_module_runtime_free_blocks(struct sst_module_runtime *runtime)
928 struct sst_dsp *dsp = runtime->dsp;
930 mutex_lock(&dsp->mutex);
931 block_list_remove(dsp, &runtime->block_list);
932 mutex_unlock(&dsp->mutex);
935 EXPORT_SYMBOL_GPL(sst_module_runtime_free_blocks);
937 int sst_module_runtime_save(struct sst_module_runtime *runtime,
938 struct sst_module_runtime_context *context)
940 struct sst_dsp *dsp = runtime->dsp;
941 struct sst_module *module = runtime->module;
944 dev_dbg(dsp->dev, "saving runtime %d memory at 0x%x size 0x%x\n",
945 runtime->id, runtime->persistent_offset,
946 module->persistent_size);
948 context->buffer = dma_alloc_coherent(dsp->dma_dev,
949 module->persistent_size,
950 &context->dma_buffer, GFP_DMA | GFP_KERNEL);
951 if (!context->buffer) {
952 dev_err(dsp->dev, "error: DMA context alloc failed\n");
956 mutex_lock(&dsp->mutex);
958 if (dsp->fw_use_dma) {
960 ret = sst_dsp_dma_get_channel(dsp, 0);
964 ret = sst_dsp_dma_copyfrom(dsp, context->dma_buffer,
965 dsp->addr.lpe_base + runtime->persistent_offset,
966 module->persistent_size);
967 sst_dsp_dma_put_channel(dsp);
969 dev_err(dsp->dev, "error: context copy failed\n");
973 sst_memcpy32(context->buffer, dsp->addr.lpe +
974 runtime->persistent_offset,
975 module->persistent_size);
978 mutex_unlock(&dsp->mutex);
981 EXPORT_SYMBOL_GPL(sst_module_runtime_save);
983 int sst_module_runtime_restore(struct sst_module_runtime *runtime,
984 struct sst_module_runtime_context *context)
986 struct sst_dsp *dsp = runtime->dsp;
987 struct sst_module *module = runtime->module;
990 dev_dbg(dsp->dev, "restoring runtime %d memory at 0x%x size 0x%x\n",
991 runtime->id, runtime->persistent_offset,
992 module->persistent_size);
994 mutex_lock(&dsp->mutex);
996 if (!context->buffer) {
997 dev_info(dsp->dev, "no context buffer need to restore!\n");
1001 if (dsp->fw_use_dma) {
1003 ret = sst_dsp_dma_get_channel(dsp, 0);
1007 ret = sst_dsp_dma_copyto(dsp,
1008 dsp->addr.lpe_base + runtime->persistent_offset,
1009 context->dma_buffer, module->persistent_size);
1010 sst_dsp_dma_put_channel(dsp);
1012 dev_err(dsp->dev, "error: module copy failed\n");
1016 sst_memcpy32(dsp->addr.lpe + runtime->persistent_offset,
1017 context->buffer, module->persistent_size);
1019 dma_free_coherent(dsp->dma_dev, module->persistent_size,
1020 context->buffer, context->dma_buffer);
1021 context->buffer = NULL;
1024 mutex_unlock(&dsp->mutex);
1027 EXPORT_SYMBOL_GPL(sst_module_runtime_restore);
1029 /* register a DSP memory block for use with FW based modules */
1030 struct sst_mem_block *sst_mem_block_register(struct sst_dsp *dsp, u32 offset,
1031 u32 size, enum sst_mem_type type, const struct sst_block_ops *ops,
1032 u32 index, void *private)
1034 struct sst_mem_block *block;
1036 block = kzalloc(sizeof(*block), GFP_KERNEL);
1040 block->offset = offset;
1042 block->index = index;
1045 block->private = private;
1048 mutex_lock(&dsp->mutex);
1049 list_add(&block->list, &dsp->free_block_list);
1050 mutex_unlock(&dsp->mutex);
1054 EXPORT_SYMBOL_GPL(sst_mem_block_register);
1056 /* unregister all DSP memory blocks */
1057 void sst_mem_block_unregister_all(struct sst_dsp *dsp)
1059 struct sst_mem_block *block, *tmp;
1061 mutex_lock(&dsp->mutex);
1063 /* unregister used blocks */
1064 list_for_each_entry_safe(block, tmp, &dsp->used_block_list, list) {
1065 list_del(&block->list);
1069 /* unregister free blocks */
1070 list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) {
1071 list_del(&block->list);
1075 mutex_unlock(&dsp->mutex);
1077 EXPORT_SYMBOL_GPL(sst_mem_block_unregister_all);
1079 /* allocate scratch buffer blocks */
1080 int sst_block_alloc_scratch(struct sst_dsp *dsp)
1082 struct sst_module *module;
1083 struct sst_block_allocator ba;
1086 mutex_lock(&dsp->mutex);
1088 /* calculate required scratch size */
1089 dsp->scratch_size = 0;
1090 list_for_each_entry(module, &dsp->module_list, list) {
1091 dev_dbg(dsp->dev, "module %d scratch req 0x%x bytes\n",
1092 module->id, module->scratch_size);
1093 if (dsp->scratch_size < module->scratch_size)
1094 dsp->scratch_size = module->scratch_size;
1097 dev_dbg(dsp->dev, "scratch buffer required is 0x%x bytes\n",
1100 if (dsp->scratch_size == 0) {
1101 dev_info(dsp->dev, "no modules need scratch buffer\n");
1102 mutex_unlock(&dsp->mutex);
1106 /* allocate blocks for module scratch buffers */
1107 dev_dbg(dsp->dev, "allocating scratch blocks\n");
1109 ba.size = dsp->scratch_size;
1110 ba.type = SST_MEM_DRAM;
1112 /* do we need to allocate at fixed offset */
1113 if (dsp->scratch_offset != 0) {
1115 dev_dbg(dsp->dev, "block request 0x%x bytes type %d at 0x%x\n",
1116 ba.size, ba.type, ba.offset);
1118 ba.offset = dsp->scratch_offset;
1120 /* alloc blocks that includes this section */
1121 ret = block_alloc_fixed(dsp, &ba, &dsp->scratch_block_list);
1124 dev_dbg(dsp->dev, "block request 0x%x bytes type %d\n",
1128 ret = block_alloc(dsp, &ba, &dsp->scratch_block_list);
1131 dev_err(dsp->dev, "error: can't alloc scratch blocks\n");
1132 mutex_unlock(&dsp->mutex);
1136 ret = block_list_prepare(dsp, &dsp->scratch_block_list);
1138 dev_err(dsp->dev, "error: scratch block prepare failed\n");
1139 mutex_unlock(&dsp->mutex);
1143 /* assign the same offset of scratch to each module */
1144 dsp->scratch_offset = ba.offset;
1145 mutex_unlock(&dsp->mutex);
1146 return dsp->scratch_size;
1148 EXPORT_SYMBOL_GPL(sst_block_alloc_scratch);
1150 /* free all scratch blocks */
1151 void sst_block_free_scratch(struct sst_dsp *dsp)
1153 mutex_lock(&dsp->mutex);
1154 block_list_remove(dsp, &dsp->scratch_block_list);
1155 mutex_unlock(&dsp->mutex);
1157 EXPORT_SYMBOL_GPL(sst_block_free_scratch);
1159 /* get a module from it's unique ID */
1160 struct sst_module *sst_module_get_from_id(struct sst_dsp *dsp, u32 id)
1162 struct sst_module *module;
1164 mutex_lock(&dsp->mutex);
1166 list_for_each_entry(module, &dsp->module_list, list) {
1167 if (module->id == id) {
1168 mutex_unlock(&dsp->mutex);
1173 mutex_unlock(&dsp->mutex);
1176 EXPORT_SYMBOL_GPL(sst_module_get_from_id);
1178 struct sst_module_runtime *sst_module_runtime_get_from_id(
1179 struct sst_module *module, u32 id)
1181 struct sst_module_runtime *runtime;
1182 struct sst_dsp *dsp = module->dsp;
1184 mutex_lock(&dsp->mutex);
1186 list_for_each_entry(runtime, &module->runtime_list, list) {
1187 if (runtime->id == id) {
1188 mutex_unlock(&dsp->mutex);
1193 mutex_unlock(&dsp->mutex);
1196 EXPORT_SYMBOL_GPL(sst_module_runtime_get_from_id);
1198 /* returns block address in DSP address space */
1199 u32 sst_dsp_get_offset(struct sst_dsp *dsp, u32 offset,
1200 enum sst_mem_type type)
1204 return offset - dsp->addr.iram_offset +
1205 dsp->addr.dsp_iram_offset;
1207 return offset - dsp->addr.dram_offset +
1208 dsp->addr.dsp_dram_offset;
1213 EXPORT_SYMBOL_GPL(sst_dsp_get_offset);