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/platform_data/dma-dw.h>
30 #include <linux/dma/dw.h>
33 #include <asm/pgtable.h>
36 #include "sst-dsp-priv.h"
38 #define SST_DMA_RESOURCES 2
39 #define SST_DSP_DMA_MAX_BURST 0x3
40 #define SST_HSW_BLOCK_ANY 0xffffffff
42 #define SST_HSW_MASK_DMA_ADDR_DSP 0xfff00000
47 struct dw_dma_chip *chip;
49 struct dma_async_tx_descriptor *desc;
53 static inline void sst_memcpy32(volatile void __iomem *dest, void *src, u32 bytes)
55 /* __iowrite32_copy use 32bit size values so divide by 4 */
56 __iowrite32_copy((void *)dest, src, bytes/4);
59 static void sst_dma_transfer_complete(void *arg)
61 struct sst_dsp *sst = (struct sst_dsp *)arg;
63 dev_dbg(sst->dev, "DMA: callback\n");
66 static int sst_dsp_dma_copy(struct sst_dsp *sst, dma_addr_t dest_addr,
67 dma_addr_t src_addr, size_t size)
69 struct dma_async_tx_descriptor *desc;
70 struct sst_dma *dma = sst->dma;
72 if (dma->ch == NULL) {
73 dev_err(sst->dev, "error: no DMA channel\n");
77 dev_dbg(sst->dev, "DMA: src: 0x%lx dest 0x%lx size %zu\n",
78 (unsigned long)src_addr, (unsigned long)dest_addr, size);
80 desc = dma->ch->device->device_prep_dma_memcpy(dma->ch, dest_addr,
81 src_addr, size, DMA_CTRL_ACK);
83 dev_err(sst->dev, "error: dma prep memcpy failed\n");
87 desc->callback = sst_dma_transfer_complete;
88 desc->callback_param = sst;
90 desc->tx_submit(desc);
91 dma_wait_for_async_tx(desc);
97 int sst_dsp_dma_copyto(struct sst_dsp *sst, dma_addr_t dest_addr,
98 dma_addr_t src_addr, size_t size)
100 return sst_dsp_dma_copy(sst, dest_addr | SST_HSW_MASK_DMA_ADDR_DSP,
103 EXPORT_SYMBOL_GPL(sst_dsp_dma_copyto);
106 int sst_dsp_dma_copyfrom(struct sst_dsp *sst, dma_addr_t dest_addr,
107 dma_addr_t src_addr, size_t size)
109 return sst_dsp_dma_copy(sst, dest_addr,
110 src_addr | SST_HSW_MASK_DMA_ADDR_DSP, size);
112 EXPORT_SYMBOL_GPL(sst_dsp_dma_copyfrom);
114 /* remove module from memory - callers hold locks */
115 static void block_list_remove(struct sst_dsp *dsp,
116 struct list_head *block_list)
118 struct sst_mem_block *block, *tmp;
121 /* disable each block */
122 list_for_each_entry(block, block_list, module_list) {
124 if (block->ops && block->ops->disable) {
125 err = block->ops->disable(block);
128 "error: cant disable block %d:%d\n",
129 block->type, block->index);
133 /* mark each block as free */
134 list_for_each_entry_safe(block, tmp, block_list, module_list) {
135 list_del(&block->module_list);
136 list_move(&block->list, &dsp->free_block_list);
137 dev_dbg(dsp->dev, "block freed %d:%d at offset 0x%x\n",
138 block->type, block->index, block->offset);
142 /* prepare the memory block to receive data from host - callers hold locks */
143 static int block_list_prepare(struct sst_dsp *dsp,
144 struct list_head *block_list)
146 struct sst_mem_block *block;
149 /* enable each block so that's it'e ready for data */
150 list_for_each_entry(block, block_list, module_list) {
152 if (block->ops && block->ops->enable && !block->users) {
153 ret = block->ops->enable(block);
156 "error: cant disable block %d:%d\n",
157 block->type, block->index);
165 list_for_each_entry(block, block_list, module_list) {
166 if (block->ops && block->ops->disable)
167 block->ops->disable(block);
172 static struct dw_dma_platform_data dw_pdata = {
174 .chan_allocation_order = CHAN_ALLOCATION_ASCENDING,
175 .chan_priority = CHAN_PRIORITY_ASCENDING,
178 static struct dw_dma_chip *dw_probe(struct device *dev, struct resource *mem,
181 struct dw_dma_chip *chip;
184 chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
186 return ERR_PTR(-ENOMEM);
189 chip->regs = devm_ioremap_resource(dev, mem);
190 if (IS_ERR(chip->regs))
191 return ERR_CAST(chip->regs);
193 err = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(31));
198 err = dw_dma_probe(chip, &dw_pdata);
205 static void dw_remove(struct dw_dma_chip *chip)
210 static bool dma_chan_filter(struct dma_chan *chan, void *param)
212 struct sst_dsp *dsp = (struct sst_dsp *)param;
214 return chan->device->dev == dsp->dma_dev;
217 int sst_dsp_dma_get_channel(struct sst_dsp *dsp, int chan_id)
219 struct sst_dma *dma = dsp->dma;
220 struct dma_slave_config slave;
224 /* The Intel MID DMA engine driver needs the slave config set but
225 * Synopsis DMA engine driver safely ignores the slave config */
227 dma_cap_set(DMA_SLAVE, mask);
228 dma_cap_set(DMA_MEMCPY, mask);
230 dma->ch = dma_request_channel(mask, dma_chan_filter, dsp);
231 if (dma->ch == NULL) {
232 dev_err(dsp->dev, "error: DMA request channel failed\n");
236 memset(&slave, 0, sizeof(slave));
237 slave.direction = DMA_MEM_TO_DEV;
238 slave.src_addr_width =
239 slave.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
240 slave.src_maxburst = slave.dst_maxburst = SST_DSP_DMA_MAX_BURST;
242 ret = dmaengine_slave_config(dma->ch, &slave);
244 dev_err(dsp->dev, "error: unable to set DMA slave config %d\n",
246 dma_release_channel(dma->ch);
252 EXPORT_SYMBOL_GPL(sst_dsp_dma_get_channel);
254 void sst_dsp_dma_put_channel(struct sst_dsp *dsp)
256 struct sst_dma *dma = dsp->dma;
261 dma_release_channel(dma->ch);
264 EXPORT_SYMBOL_GPL(sst_dsp_dma_put_channel);
266 int sst_dma_new(struct sst_dsp *sst)
268 struct sst_pdata *sst_pdata = sst->pdata;
271 const char *dma_dev_name;
274 if (sst->pdata->resindex_dma_base == -1)
275 /* DMA is not used, return and squelsh error messages */
278 /* configure the correct platform data for whatever DMA engine
279 * is attached to the ADSP IP. */
280 switch (sst->pdata->dma_engine) {
281 case SST_DMA_TYPE_DW:
282 dma_dev_name = "dw_dmac";
284 case SST_DMA_TYPE_MID:
285 dma_dev_name = "Intel MID DMA";
288 dev_err(sst->dev, "error: invalid DMA engine %d\n",
289 sst->pdata->dma_engine);
293 dma = devm_kzalloc(sst->dev, sizeof(struct sst_dma), GFP_KERNEL);
299 memset(&mem, 0, sizeof(mem));
301 mem.start = sst->addr.lpe_base + sst_pdata->dma_base;
302 mem.end = sst->addr.lpe_base + sst_pdata->dma_base + sst_pdata->dma_size - 1;
303 mem.flags = IORESOURCE_MEM;
305 /* now register DMA engine device */
306 dma->chip = dw_probe(sst->dma_dev, &mem, sst_pdata->irq);
307 if (IS_ERR(dma->chip)) {
308 dev_err(sst->dev, "error: DMA device register failed\n");
309 ret = PTR_ERR(dma->chip);
314 sst->fw_use_dma = true;
318 devm_kfree(sst->dev, dma);
321 EXPORT_SYMBOL(sst_dma_new);
323 void sst_dma_free(struct sst_dma *dma)
330 dma_release_channel(dma->ch);
333 dw_remove(dma->chip);
336 EXPORT_SYMBOL(sst_dma_free);
338 /* create new generic firmware object */
339 struct sst_fw *sst_fw_new(struct sst_dsp *dsp,
340 const struct firmware *fw, void *private)
342 struct sst_fw *sst_fw;
345 if (!dsp->ops->parse_fw)
348 sst_fw = kzalloc(sizeof(*sst_fw), GFP_KERNEL);
353 sst_fw->private = private;
354 sst_fw->size = fw->size;
356 /* allocate DMA buffer to store FW data */
357 sst_fw->dma_buf = dma_alloc_coherent(dsp->dma_dev, sst_fw->size,
358 &sst_fw->dmable_fw_paddr, GFP_DMA | GFP_KERNEL);
359 if (!sst_fw->dma_buf) {
360 dev_err(dsp->dev, "error: DMA alloc failed\n");
365 /* copy FW data to DMA-able memory */
366 memcpy((void *)sst_fw->dma_buf, (void *)fw->data, fw->size);
368 if (dsp->fw_use_dma) {
369 err = sst_dsp_dma_get_channel(dsp, 0);
374 /* call core specific FW paser to load FW data into DSP */
375 err = dsp->ops->parse_fw(sst_fw);
377 dev_err(dsp->dev, "error: parse fw failed %d\n", err);
382 sst_dsp_dma_put_channel(dsp);
384 mutex_lock(&dsp->mutex);
385 list_add(&sst_fw->list, &dsp->fw_list);
386 mutex_unlock(&dsp->mutex);
392 sst_dsp_dma_put_channel(dsp);
394 dma_free_coherent(dsp->dma_dev, sst_fw->size,
396 sst_fw->dmable_fw_paddr);
397 sst_fw->dma_buf = NULL;
401 EXPORT_SYMBOL_GPL(sst_fw_new);
403 int sst_fw_reload(struct sst_fw *sst_fw)
405 struct sst_dsp *dsp = sst_fw->dsp;
408 dev_dbg(dsp->dev, "reloading firmware\n");
410 /* call core specific FW paser to load FW data into DSP */
411 ret = dsp->ops->parse_fw(sst_fw);
413 dev_err(dsp->dev, "error: parse fw failed %d\n", ret);
417 EXPORT_SYMBOL_GPL(sst_fw_reload);
419 void sst_fw_unload(struct sst_fw *sst_fw)
421 struct sst_dsp *dsp = sst_fw->dsp;
422 struct sst_module *module, *mtmp;
423 struct sst_module_runtime *runtime, *rtmp;
425 dev_dbg(dsp->dev, "unloading firmware\n");
427 mutex_lock(&dsp->mutex);
429 /* check module by module */
430 list_for_each_entry_safe(module, mtmp, &dsp->module_list, list) {
431 if (module->sst_fw == sst_fw) {
433 /* remove runtime modules */
434 list_for_each_entry_safe(runtime, rtmp, &module->runtime_list, list) {
436 block_list_remove(dsp, &runtime->block_list);
437 list_del(&runtime->list);
441 /* now remove the module */
442 block_list_remove(dsp, &module->block_list);
443 list_del(&module->list);
448 /* remove all scratch blocks */
449 block_list_remove(dsp, &dsp->scratch_block_list);
451 mutex_unlock(&dsp->mutex);
453 EXPORT_SYMBOL_GPL(sst_fw_unload);
455 /* free single firmware object */
456 void sst_fw_free(struct sst_fw *sst_fw)
458 struct sst_dsp *dsp = sst_fw->dsp;
460 mutex_lock(&dsp->mutex);
461 list_del(&sst_fw->list);
462 mutex_unlock(&dsp->mutex);
465 dma_free_coherent(dsp->dma_dev, sst_fw->size, sst_fw->dma_buf,
466 sst_fw->dmable_fw_paddr);
469 EXPORT_SYMBOL_GPL(sst_fw_free);
471 /* free all firmware objects */
472 void sst_fw_free_all(struct sst_dsp *dsp)
474 struct sst_fw *sst_fw, *t;
476 mutex_lock(&dsp->mutex);
477 list_for_each_entry_safe(sst_fw, t, &dsp->fw_list, list) {
479 list_del(&sst_fw->list);
480 dma_free_coherent(dsp->dev, sst_fw->size, sst_fw->dma_buf,
481 sst_fw->dmable_fw_paddr);
484 mutex_unlock(&dsp->mutex);
486 EXPORT_SYMBOL_GPL(sst_fw_free_all);
488 /* create a new SST generic module from FW template */
489 struct sst_module *sst_module_new(struct sst_fw *sst_fw,
490 struct sst_module_template *template, void *private)
492 struct sst_dsp *dsp = sst_fw->dsp;
493 struct sst_module *sst_module;
495 sst_module = kzalloc(sizeof(*sst_module), GFP_KERNEL);
496 if (sst_module == NULL)
499 sst_module->id = template->id;
500 sst_module->dsp = dsp;
501 sst_module->sst_fw = sst_fw;
502 sst_module->scratch_size = template->scratch_size;
503 sst_module->persistent_size = template->persistent_size;
504 sst_module->entry = template->entry;
506 INIT_LIST_HEAD(&sst_module->block_list);
507 INIT_LIST_HEAD(&sst_module->runtime_list);
509 mutex_lock(&dsp->mutex);
510 list_add(&sst_module->list, &dsp->module_list);
511 mutex_unlock(&dsp->mutex);
515 EXPORT_SYMBOL_GPL(sst_module_new);
517 /* free firmware module and remove from available list */
518 void sst_module_free(struct sst_module *sst_module)
520 struct sst_dsp *dsp = sst_module->dsp;
522 mutex_lock(&dsp->mutex);
523 list_del(&sst_module->list);
524 mutex_unlock(&dsp->mutex);
528 EXPORT_SYMBOL_GPL(sst_module_free);
530 struct sst_module_runtime *sst_module_runtime_new(struct sst_module *module,
531 int id, void *private)
533 struct sst_dsp *dsp = module->dsp;
534 struct sst_module_runtime *runtime;
536 runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);
542 runtime->module = module;
543 INIT_LIST_HEAD(&runtime->block_list);
545 mutex_lock(&dsp->mutex);
546 list_add(&runtime->list, &module->runtime_list);
547 mutex_unlock(&dsp->mutex);
551 EXPORT_SYMBOL_GPL(sst_module_runtime_new);
553 void sst_module_runtime_free(struct sst_module_runtime *runtime)
555 struct sst_dsp *dsp = runtime->dsp;
557 mutex_lock(&dsp->mutex);
558 list_del(&runtime->list);
559 mutex_unlock(&dsp->mutex);
563 EXPORT_SYMBOL_GPL(sst_module_runtime_free);
565 static struct sst_mem_block *find_block(struct sst_dsp *dsp,
566 struct sst_block_allocator *ba)
568 struct sst_mem_block *block;
570 list_for_each_entry(block, &dsp->free_block_list, list) {
571 if (block->type == ba->type && block->offset == ba->offset)
578 /* Block allocator must be on block boundary */
579 static int block_alloc_contiguous(struct sst_dsp *dsp,
580 struct sst_block_allocator *ba, struct list_head *block_list)
582 struct list_head tmp = LIST_HEAD_INIT(tmp);
583 struct sst_mem_block *block;
584 u32 block_start = SST_HSW_BLOCK_ANY;
585 int size = ba->size, offset = ba->offset;
587 while (ba->size > 0) {
589 block = find_block(dsp, ba);
591 list_splice(&tmp, &dsp->free_block_list);
598 list_move_tail(&block->list, &tmp);
599 ba->offset += block->size;
600 ba->size -= block->size;
605 list_for_each_entry(block, &tmp, list) {
607 if (block->offset < block_start)
608 block_start = block->offset;
610 list_add(&block->module_list, block_list);
612 dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n",
613 block->type, block->index, block->offset);
616 list_splice(&tmp, &dsp->used_block_list);
620 /* allocate first free DSP blocks for data - callers hold locks */
621 static int block_alloc(struct sst_dsp *dsp, struct sst_block_allocator *ba,
622 struct list_head *block_list)
624 struct sst_mem_block *block, *tmp;
630 /* find first free whole blocks that can hold module */
631 list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) {
633 /* ignore blocks with wrong type */
634 if (block->type != ba->type)
637 if (ba->size > block->size)
640 ba->offset = block->offset;
641 block->bytes_used = ba->size % block->size;
642 list_add(&block->module_list, block_list);
643 list_move(&block->list, &dsp->used_block_list);
644 dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n",
645 block->type, block->index, block->offset);
649 /* then find free multiple blocks that can hold module */
650 list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) {
652 /* ignore blocks with wrong type */
653 if (block->type != ba->type)
656 /* do we span > 1 blocks */
657 if (ba->size > block->size) {
659 /* align ba to block boundary */
660 ba->offset = block->offset;
662 ret = block_alloc_contiguous(dsp, ba, block_list);
669 /* not enough free block space */
673 int sst_alloc_blocks(struct sst_dsp *dsp, struct sst_block_allocator *ba,
674 struct list_head *block_list)
678 dev_dbg(dsp->dev, "block request 0x%x bytes at offset 0x%x type %d\n",
679 ba->size, ba->offset, ba->type);
681 mutex_lock(&dsp->mutex);
683 ret = block_alloc(dsp, ba, block_list);
685 dev_err(dsp->dev, "error: can't alloc blocks %d\n", ret);
689 /* prepare DSP blocks for module usage */
690 ret = block_list_prepare(dsp, block_list);
692 dev_err(dsp->dev, "error: prepare failed\n");
695 mutex_unlock(&dsp->mutex);
698 EXPORT_SYMBOL_GPL(sst_alloc_blocks);
700 int sst_free_blocks(struct sst_dsp *dsp, struct list_head *block_list)
702 mutex_lock(&dsp->mutex);
703 block_list_remove(dsp, block_list);
704 mutex_unlock(&dsp->mutex);
707 EXPORT_SYMBOL_GPL(sst_free_blocks);
709 /* allocate memory blocks for static module addresses - callers hold locks */
710 static int block_alloc_fixed(struct sst_dsp *dsp, struct sst_block_allocator *ba,
711 struct list_head *block_list)
713 struct sst_mem_block *block, *tmp;
714 struct sst_block_allocator ba_tmp = *ba;
715 u32 end = ba->offset + ba->size, block_end;
718 /* only IRAM/DRAM blocks are managed */
719 if (ba->type != SST_MEM_IRAM && ba->type != SST_MEM_DRAM)
722 /* are blocks already attached to this module */
723 list_for_each_entry_safe(block, tmp, block_list, module_list) {
725 /* ignore blocks with wrong type */
726 if (block->type != ba->type)
729 block_end = block->offset + block->size;
731 /* find block that holds section */
732 if (ba->offset >= block->offset && end <= block_end)
735 /* does block span more than 1 section */
736 if (ba->offset >= block->offset && ba->offset < block_end) {
738 /* align ba to block boundary */
739 ba_tmp.size -= block_end - ba->offset;
740 ba_tmp.offset = block_end;
741 err = block_alloc_contiguous(dsp, &ba_tmp, block_list);
745 /* module already owns blocks */
750 /* find first free blocks that can hold section in free list */
751 list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) {
752 block_end = block->offset + block->size;
754 /* ignore blocks with wrong type */
755 if (block->type != ba->type)
758 /* find block that holds section */
759 if (ba->offset >= block->offset && end <= block_end) {
762 list_move(&block->list, &dsp->used_block_list);
763 list_add(&block->module_list, block_list);
764 dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n",
765 block->type, block->index, block->offset);
769 /* does block span more than 1 section */
770 if (ba->offset >= block->offset && ba->offset < block_end) {
773 list_move(&block->list, &dsp->used_block_list);
774 list_add(&block->module_list, block_list);
775 /* align ba to block boundary */
776 ba_tmp.size -= block_end - ba->offset;
777 ba_tmp.offset = block_end;
779 err = block_alloc_contiguous(dsp, &ba_tmp, block_list);
790 /* Load fixed module data into DSP memory blocks */
791 int sst_module_alloc_blocks(struct sst_module *module)
793 struct sst_dsp *dsp = module->dsp;
794 struct sst_fw *sst_fw = module->sst_fw;
795 struct sst_block_allocator ba;
798 memset(&ba, 0, sizeof(ba));
799 ba.size = module->size;
800 ba.type = module->type;
801 ba.offset = module->offset;
803 dev_dbg(dsp->dev, "block request 0x%x bytes at offset 0x%x type %d\n",
804 ba.size, ba.offset, ba.type);
806 mutex_lock(&dsp->mutex);
808 /* alloc blocks that includes this section */
809 ret = block_alloc_fixed(dsp, &ba, &module->block_list);
812 "error: no free blocks for section at offset 0x%x size 0x%x\n",
813 module->offset, module->size);
814 mutex_unlock(&dsp->mutex);
818 /* prepare DSP blocks for module copy */
819 ret = block_list_prepare(dsp, &module->block_list);
821 dev_err(dsp->dev, "error: fw module prepare failed\n");
825 /* copy partial module data to blocks */
826 if (dsp->fw_use_dma) {
827 ret = sst_dsp_dma_copyto(dsp,
828 dsp->addr.lpe_base + module->offset,
829 sst_fw->dmable_fw_paddr + module->data_offset,
832 dev_err(dsp->dev, "error: module copy failed\n");
836 sst_memcpy32(dsp->addr.lpe + module->offset, module->data,
839 mutex_unlock(&dsp->mutex);
843 block_list_remove(dsp, &module->block_list);
844 mutex_unlock(&dsp->mutex);
847 EXPORT_SYMBOL_GPL(sst_module_alloc_blocks);
849 /* Unload entire module from DSP memory */
850 int sst_module_free_blocks(struct sst_module *module)
852 struct sst_dsp *dsp = module->dsp;
854 mutex_lock(&dsp->mutex);
855 block_list_remove(dsp, &module->block_list);
856 mutex_unlock(&dsp->mutex);
859 EXPORT_SYMBOL_GPL(sst_module_free_blocks);
861 int sst_module_runtime_alloc_blocks(struct sst_module_runtime *runtime,
864 struct sst_dsp *dsp = runtime->dsp;
865 struct sst_module *module = runtime->module;
866 struct sst_block_allocator ba;
869 if (module->persistent_size == 0)
872 memset(&ba, 0, sizeof(ba));
873 ba.size = module->persistent_size;
874 ba.type = SST_MEM_DRAM;
876 mutex_lock(&dsp->mutex);
878 /* do we need to allocate at a fixed address ? */
883 dev_dbg(dsp->dev, "persistent fixed block request 0x%x bytes type %d offset 0x%x\n",
884 ba.size, ba.type, ba.offset);
886 /* alloc blocks that includes this section */
887 ret = block_alloc_fixed(dsp, &ba, &runtime->block_list);
890 dev_dbg(dsp->dev, "persistent block request 0x%x bytes type %d\n",
893 /* alloc blocks that includes this section */
894 ret = block_alloc(dsp, &ba, &runtime->block_list);
898 "error: no free blocks for runtime module size 0x%x\n",
899 module->persistent_size);
900 mutex_unlock(&dsp->mutex);
903 runtime->persistent_offset = ba.offset;
905 /* prepare DSP blocks for module copy */
906 ret = block_list_prepare(dsp, &runtime->block_list);
908 dev_err(dsp->dev, "error: runtime block prepare failed\n");
912 mutex_unlock(&dsp->mutex);
916 block_list_remove(dsp, &module->block_list);
917 mutex_unlock(&dsp->mutex);
920 EXPORT_SYMBOL_GPL(sst_module_runtime_alloc_blocks);
922 int sst_module_runtime_free_blocks(struct sst_module_runtime *runtime)
924 struct sst_dsp *dsp = runtime->dsp;
926 mutex_lock(&dsp->mutex);
927 block_list_remove(dsp, &runtime->block_list);
928 mutex_unlock(&dsp->mutex);
931 EXPORT_SYMBOL_GPL(sst_module_runtime_free_blocks);
933 int sst_module_runtime_save(struct sst_module_runtime *runtime,
934 struct sst_module_runtime_context *context)
936 struct sst_dsp *dsp = runtime->dsp;
937 struct sst_module *module = runtime->module;
940 dev_dbg(dsp->dev, "saving runtime %d memory at 0x%x size 0x%x\n",
941 runtime->id, runtime->persistent_offset,
942 module->persistent_size);
944 context->buffer = dma_alloc_coherent(dsp->dma_dev,
945 module->persistent_size,
946 &context->dma_buffer, GFP_DMA | GFP_KERNEL);
947 if (!context->buffer) {
948 dev_err(dsp->dev, "error: DMA context alloc failed\n");
952 mutex_lock(&dsp->mutex);
954 if (dsp->fw_use_dma) {
956 ret = sst_dsp_dma_get_channel(dsp, 0);
960 ret = sst_dsp_dma_copyfrom(dsp, context->dma_buffer,
961 dsp->addr.lpe_base + runtime->persistent_offset,
962 module->persistent_size);
963 sst_dsp_dma_put_channel(dsp);
965 dev_err(dsp->dev, "error: context copy failed\n");
969 sst_memcpy32(context->buffer, dsp->addr.lpe +
970 runtime->persistent_offset,
971 module->persistent_size);
974 mutex_unlock(&dsp->mutex);
977 EXPORT_SYMBOL_GPL(sst_module_runtime_save);
979 int sst_module_runtime_restore(struct sst_module_runtime *runtime,
980 struct sst_module_runtime_context *context)
982 struct sst_dsp *dsp = runtime->dsp;
983 struct sst_module *module = runtime->module;
986 dev_dbg(dsp->dev, "restoring runtime %d memory at 0x%x size 0x%x\n",
987 runtime->id, runtime->persistent_offset,
988 module->persistent_size);
990 mutex_lock(&dsp->mutex);
992 if (!context->buffer) {
993 dev_info(dsp->dev, "no context buffer need to restore!\n");
997 if (dsp->fw_use_dma) {
999 ret = sst_dsp_dma_get_channel(dsp, 0);
1003 ret = sst_dsp_dma_copyto(dsp,
1004 dsp->addr.lpe_base + runtime->persistent_offset,
1005 context->dma_buffer, module->persistent_size);
1006 sst_dsp_dma_put_channel(dsp);
1008 dev_err(dsp->dev, "error: module copy failed\n");
1012 sst_memcpy32(dsp->addr.lpe + runtime->persistent_offset,
1013 context->buffer, module->persistent_size);
1015 dma_free_coherent(dsp->dma_dev, module->persistent_size,
1016 context->buffer, context->dma_buffer);
1017 context->buffer = NULL;
1020 mutex_unlock(&dsp->mutex);
1023 EXPORT_SYMBOL_GPL(sst_module_runtime_restore);
1025 /* register a DSP memory block for use with FW based modules */
1026 struct sst_mem_block *sst_mem_block_register(struct sst_dsp *dsp, u32 offset,
1027 u32 size, enum sst_mem_type type, struct sst_block_ops *ops, u32 index,
1030 struct sst_mem_block *block;
1032 block = kzalloc(sizeof(*block), GFP_KERNEL);
1036 block->offset = offset;
1038 block->index = index;
1041 block->private = private;
1044 mutex_lock(&dsp->mutex);
1045 list_add(&block->list, &dsp->free_block_list);
1046 mutex_unlock(&dsp->mutex);
1050 EXPORT_SYMBOL_GPL(sst_mem_block_register);
1052 /* unregister all DSP memory blocks */
1053 void sst_mem_block_unregister_all(struct sst_dsp *dsp)
1055 struct sst_mem_block *block, *tmp;
1057 mutex_lock(&dsp->mutex);
1059 /* unregister used blocks */
1060 list_for_each_entry_safe(block, tmp, &dsp->used_block_list, list) {
1061 list_del(&block->list);
1065 /* unregister free blocks */
1066 list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) {
1067 list_del(&block->list);
1071 mutex_unlock(&dsp->mutex);
1073 EXPORT_SYMBOL_GPL(sst_mem_block_unregister_all);
1075 /* allocate scratch buffer blocks */
1076 int sst_block_alloc_scratch(struct sst_dsp *dsp)
1078 struct sst_module *module;
1079 struct sst_block_allocator ba;
1082 mutex_lock(&dsp->mutex);
1084 /* calculate required scratch size */
1085 dsp->scratch_size = 0;
1086 list_for_each_entry(module, &dsp->module_list, list) {
1087 dev_dbg(dsp->dev, "module %d scratch req 0x%x bytes\n",
1088 module->id, module->scratch_size);
1089 if (dsp->scratch_size < module->scratch_size)
1090 dsp->scratch_size = module->scratch_size;
1093 dev_dbg(dsp->dev, "scratch buffer required is 0x%x bytes\n",
1096 if (dsp->scratch_size == 0) {
1097 dev_info(dsp->dev, "no modules need scratch buffer\n");
1098 mutex_unlock(&dsp->mutex);
1102 /* allocate blocks for module scratch buffers */
1103 dev_dbg(dsp->dev, "allocating scratch blocks\n");
1105 ba.size = dsp->scratch_size;
1106 ba.type = SST_MEM_DRAM;
1108 /* do we need to allocate at fixed offset */
1109 if (dsp->scratch_offset != 0) {
1111 dev_dbg(dsp->dev, "block request 0x%x bytes type %d at 0x%x\n",
1112 ba.size, ba.type, ba.offset);
1114 ba.offset = dsp->scratch_offset;
1116 /* alloc blocks that includes this section */
1117 ret = block_alloc_fixed(dsp, &ba, &dsp->scratch_block_list);
1120 dev_dbg(dsp->dev, "block request 0x%x bytes type %d\n",
1124 ret = block_alloc(dsp, &ba, &dsp->scratch_block_list);
1127 dev_err(dsp->dev, "error: can't alloc scratch blocks\n");
1128 mutex_unlock(&dsp->mutex);
1132 ret = block_list_prepare(dsp, &dsp->scratch_block_list);
1134 dev_err(dsp->dev, "error: scratch block prepare failed\n");
1135 mutex_unlock(&dsp->mutex);
1139 /* assign the same offset of scratch to each module */
1140 dsp->scratch_offset = ba.offset;
1141 mutex_unlock(&dsp->mutex);
1142 return dsp->scratch_size;
1144 EXPORT_SYMBOL_GPL(sst_block_alloc_scratch);
1146 /* free all scratch blocks */
1147 void sst_block_free_scratch(struct sst_dsp *dsp)
1149 mutex_lock(&dsp->mutex);
1150 block_list_remove(dsp, &dsp->scratch_block_list);
1151 mutex_unlock(&dsp->mutex);
1153 EXPORT_SYMBOL_GPL(sst_block_free_scratch);
1155 /* get a module from it's unique ID */
1156 struct sst_module *sst_module_get_from_id(struct sst_dsp *dsp, u32 id)
1158 struct sst_module *module;
1160 mutex_lock(&dsp->mutex);
1162 list_for_each_entry(module, &dsp->module_list, list) {
1163 if (module->id == id) {
1164 mutex_unlock(&dsp->mutex);
1169 mutex_unlock(&dsp->mutex);
1172 EXPORT_SYMBOL_GPL(sst_module_get_from_id);
1174 struct sst_module_runtime *sst_module_runtime_get_from_id(
1175 struct sst_module *module, u32 id)
1177 struct sst_module_runtime *runtime;
1178 struct sst_dsp *dsp = module->dsp;
1180 mutex_lock(&dsp->mutex);
1182 list_for_each_entry(runtime, &module->runtime_list, list) {
1183 if (runtime->id == id) {
1184 mutex_unlock(&dsp->mutex);
1189 mutex_unlock(&dsp->mutex);
1192 EXPORT_SYMBOL_GPL(sst_module_runtime_get_from_id);
1194 /* returns block address in DSP address space */
1195 u32 sst_dsp_get_offset(struct sst_dsp *dsp, u32 offset,
1196 enum sst_mem_type type)
1200 return offset - dsp->addr.iram_offset +
1201 dsp->addr.dsp_iram_offset;
1203 return offset - dsp->addr.dram_offset +
1204 dsp->addr.dsp_dram_offset;
1209 EXPORT_SYMBOL_GPL(sst_dsp_get_offset);