diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/soc/intel/common/sst-firmware.c | 1282 |
1 files changed, 1282 insertions, 0 deletions
diff --git a/sound/soc/intel/common/sst-firmware.c b/sound/soc/intel/common/sst-firmware.c new file mode 100644 index 000000000..6cfcc1042 --- /dev/null +++ b/sound/soc/intel/common/sst-firmware.c @@ -0,0 +1,1282 @@ +/* + * Intel SST Firmware Loader + * + * Copyright (C) 2013, Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/sched.h> +#include <linux/firmware.h> +#include <linux/export.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/dma-mapping.h> +#include <linux/dmaengine.h> +#include <linux/pci.h> +#include <linux/acpi.h> + +/* supported DMA engine drivers */ +#include <linux/dma/dw.h> + +#include <asm/page.h> +#include <asm/pgtable.h> + +#include "sst-dsp.h" +#include "sst-dsp-priv.h" + +#define SST_DMA_RESOURCES 2 +#define SST_DSP_DMA_MAX_BURST 0x3 +#define SST_HSW_BLOCK_ANY 0xffffffff + +#define SST_HSW_MASK_DMA_ADDR_DSP 0xfff00000 + +struct sst_dma { + struct sst_dsp *sst; + + struct dw_dma_chip *chip; + + struct dma_async_tx_descriptor *desc; + struct dma_chan *ch; +}; + +static inline void sst_memcpy32(volatile void __iomem *dest, void *src, u32 bytes) +{ + u32 tmp = 0; + int i, m, n; + const u8 *src_byte = src; + + m = bytes / 4; + n = bytes % 4; + + /* __iowrite32_copy use 32bit size values so divide by 4 */ + __iowrite32_copy((void *)dest, src, m); + + if (n) { + for (i = 0; i < n; i++) + tmp |= (u32)*(src_byte + m * 4 + i) << (i * 8); + __iowrite32_copy((void *)(dest + m * 4), &tmp, 1); + } + +} + +static void sst_dma_transfer_complete(void *arg) +{ + struct sst_dsp *sst = (struct sst_dsp *)arg; + + dev_dbg(sst->dev, "DMA: callback\n"); +} + +static int sst_dsp_dma_copy(struct sst_dsp *sst, dma_addr_t dest_addr, + dma_addr_t src_addr, size_t size) +{ + struct dma_async_tx_descriptor *desc; + struct sst_dma *dma = sst->dma; + + if (dma->ch == NULL) { + dev_err(sst->dev, "error: no DMA channel\n"); + return -ENODEV; + } + + dev_dbg(sst->dev, "DMA: src: 0x%lx dest 0x%lx size %zu\n", + (unsigned long)src_addr, (unsigned long)dest_addr, size); + + desc = dma->ch->device->device_prep_dma_memcpy(dma->ch, dest_addr, + src_addr, size, DMA_CTRL_ACK); + if (!desc){ + dev_err(sst->dev, "error: dma prep memcpy failed\n"); + return -EINVAL; + } + + desc->callback = sst_dma_transfer_complete; + desc->callback_param = sst; + + desc->tx_submit(desc); + dma_wait_for_async_tx(desc); + + return 0; +} + +/* copy to DSP */ +int sst_dsp_dma_copyto(struct sst_dsp *sst, dma_addr_t dest_addr, + dma_addr_t src_addr, size_t size) +{ + return sst_dsp_dma_copy(sst, dest_addr | SST_HSW_MASK_DMA_ADDR_DSP, + src_addr, size); +} +EXPORT_SYMBOL_GPL(sst_dsp_dma_copyto); + +/* copy from DSP */ +int sst_dsp_dma_copyfrom(struct sst_dsp *sst, dma_addr_t dest_addr, + dma_addr_t src_addr, size_t size) +{ + return sst_dsp_dma_copy(sst, dest_addr, + src_addr | SST_HSW_MASK_DMA_ADDR_DSP, size); +} +EXPORT_SYMBOL_GPL(sst_dsp_dma_copyfrom); + +/* remove module from memory - callers hold locks */ +static void block_list_remove(struct sst_dsp *dsp, + struct list_head *block_list) +{ + struct sst_mem_block *block, *tmp; + int err; + + /* disable each block */ + list_for_each_entry(block, block_list, module_list) { + + if (block->ops && block->ops->disable) { + err = block->ops->disable(block); + if (err < 0) + dev_err(dsp->dev, + "error: cant disable block %d:%d\n", + block->type, block->index); + } + } + + /* mark each block as free */ + list_for_each_entry_safe(block, tmp, block_list, module_list) { + list_del(&block->module_list); + list_move(&block->list, &dsp->free_block_list); + dev_dbg(dsp->dev, "block freed %d:%d at offset 0x%x\n", + block->type, block->index, block->offset); + } +} + +/* prepare the memory block to receive data from host - callers hold locks */ +static int block_list_prepare(struct sst_dsp *dsp, + struct list_head *block_list) +{ + struct sst_mem_block *block; + int ret = 0; + + /* enable each block so that's it'e ready for data */ + list_for_each_entry(block, block_list, module_list) { + + if (block->ops && block->ops->enable && !block->users) { + ret = block->ops->enable(block); + if (ret < 0) { + dev_err(dsp->dev, + "error: cant disable block %d:%d\n", + block->type, block->index); + goto err; + } + } + } + return ret; + +err: + list_for_each_entry(block, block_list, module_list) { + if (block->ops && block->ops->disable) + block->ops->disable(block); + } + return ret; +} + +static struct dw_dma_chip *dw_probe(struct device *dev, struct resource *mem, + int irq) +{ + struct dw_dma_chip *chip; + int err; + + chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); + if (!chip) + return ERR_PTR(-ENOMEM); + + chip->irq = irq; + chip->regs = devm_ioremap_resource(dev, mem); + if (IS_ERR(chip->regs)) + return ERR_CAST(chip->regs); + + err = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(31)); + if (err) + return ERR_PTR(err); + + chip->dev = dev; + + err = dw_dma_probe(chip); + if (err) + return ERR_PTR(err); + + return chip; +} + +static void dw_remove(struct dw_dma_chip *chip) +{ + dw_dma_remove(chip); +} + +static bool dma_chan_filter(struct dma_chan *chan, void *param) +{ + struct sst_dsp *dsp = (struct sst_dsp *)param; + + return chan->device->dev == dsp->dma_dev; +} + +int sst_dsp_dma_get_channel(struct sst_dsp *dsp, int chan_id) +{ + struct sst_dma *dma = dsp->dma; + struct dma_slave_config slave; + dma_cap_mask_t mask; + int ret; + + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + dma_cap_set(DMA_MEMCPY, mask); + + dma->ch = dma_request_channel(mask, dma_chan_filter, dsp); + if (dma->ch == NULL) { + dev_err(dsp->dev, "error: DMA request channel failed\n"); + return -EIO; + } + + memset(&slave, 0, sizeof(slave)); + slave.direction = DMA_MEM_TO_DEV; + slave.src_addr_width = + slave.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + slave.src_maxburst = slave.dst_maxburst = SST_DSP_DMA_MAX_BURST; + + ret = dmaengine_slave_config(dma->ch, &slave); + if (ret) { + dev_err(dsp->dev, "error: unable to set DMA slave config %d\n", + ret); + dma_release_channel(dma->ch); + dma->ch = NULL; + } + + return ret; +} +EXPORT_SYMBOL_GPL(sst_dsp_dma_get_channel); + +void sst_dsp_dma_put_channel(struct sst_dsp *dsp) +{ + struct sst_dma *dma = dsp->dma; + + if (!dma->ch) + return; + + dma_release_channel(dma->ch); + dma->ch = NULL; +} +EXPORT_SYMBOL_GPL(sst_dsp_dma_put_channel); + +static int sst_dma_new(struct sst_dsp *sst) +{ + struct sst_pdata *sst_pdata = sst->pdata; + struct sst_dma *dma; + struct resource mem; + int ret = 0; + + if (sst->pdata->resindex_dma_base == -1) + /* DMA is not used, return and squelsh error messages */ + return 0; + + /* configure the correct platform data for whatever DMA engine + * is attached to the ADSP IP. */ + switch (sst->pdata->dma_engine) { + case SST_DMA_TYPE_DW: + break; + default: + dev_err(sst->dev, "error: invalid DMA engine %d\n", + sst->pdata->dma_engine); + return -EINVAL; + } + + dma = devm_kzalloc(sst->dev, sizeof(struct sst_dma), GFP_KERNEL); + if (!dma) + return -ENOMEM; + + dma->sst = sst; + + memset(&mem, 0, sizeof(mem)); + + mem.start = sst->addr.lpe_base + sst_pdata->dma_base; + mem.end = sst->addr.lpe_base + sst_pdata->dma_base + sst_pdata->dma_size - 1; + mem.flags = IORESOURCE_MEM; + + /* now register DMA engine device */ + dma->chip = dw_probe(sst->dma_dev, &mem, sst_pdata->irq); + if (IS_ERR(dma->chip)) { + dev_err(sst->dev, "error: DMA device register failed\n"); + ret = PTR_ERR(dma->chip); + goto err_dma_dev; + } + + sst->dma = dma; + sst->fw_use_dma = true; + return 0; + +err_dma_dev: + devm_kfree(sst->dev, dma); + return ret; +} + +static void sst_dma_free(struct sst_dma *dma) +{ + + if (dma == NULL) + return; + + if (dma->ch) + dma_release_channel(dma->ch); + + if (dma->chip) + dw_remove(dma->chip); + +} + +/* create new generic firmware object */ +struct sst_fw *sst_fw_new(struct sst_dsp *dsp, + const struct firmware *fw, void *private) +{ + struct sst_fw *sst_fw; + int err; + + if (!dsp->ops->parse_fw) + return NULL; + + sst_fw = kzalloc(sizeof(*sst_fw), GFP_KERNEL); + if (sst_fw == NULL) + return NULL; + + sst_fw->dsp = dsp; + sst_fw->private = private; + sst_fw->size = fw->size; + + /* allocate DMA buffer to store FW data */ + sst_fw->dma_buf = dma_alloc_coherent(dsp->dma_dev, sst_fw->size, + &sst_fw->dmable_fw_paddr, GFP_DMA | GFP_KERNEL); + if (!sst_fw->dma_buf) { + dev_err(dsp->dev, "error: DMA alloc failed\n"); + kfree(sst_fw); + return NULL; + } + + /* copy FW data to DMA-able memory */ + memcpy((void *)sst_fw->dma_buf, (void *)fw->data, fw->size); + + if (dsp->fw_use_dma) { + err = sst_dsp_dma_get_channel(dsp, 0); + if (err < 0) + goto chan_err; + } + + /* call core specific FW paser to load FW data into DSP */ + err = dsp->ops->parse_fw(sst_fw); + if (err < 0) { + dev_err(dsp->dev, "error: parse fw failed %d\n", err); + goto parse_err; + } + + if (dsp->fw_use_dma) + sst_dsp_dma_put_channel(dsp); + + mutex_lock(&dsp->mutex); + list_add(&sst_fw->list, &dsp->fw_list); + mutex_unlock(&dsp->mutex); + + return sst_fw; + +parse_err: + if (dsp->fw_use_dma) + sst_dsp_dma_put_channel(dsp); +chan_err: + dma_free_coherent(dsp->dma_dev, sst_fw->size, + sst_fw->dma_buf, + sst_fw->dmable_fw_paddr); + sst_fw->dma_buf = NULL; + kfree(sst_fw); + return NULL; +} +EXPORT_SYMBOL_GPL(sst_fw_new); + +int sst_fw_reload(struct sst_fw *sst_fw) +{ + struct sst_dsp *dsp = sst_fw->dsp; + int ret; + + dev_dbg(dsp->dev, "reloading firmware\n"); + + /* call core specific FW paser to load FW data into DSP */ + ret = dsp->ops->parse_fw(sst_fw); + if (ret < 0) + dev_err(dsp->dev, "error: parse fw failed %d\n", ret); + + return ret; +} +EXPORT_SYMBOL_GPL(sst_fw_reload); + +void sst_fw_unload(struct sst_fw *sst_fw) +{ + struct sst_dsp *dsp = sst_fw->dsp; + struct sst_module *module, *mtmp; + struct sst_module_runtime *runtime, *rtmp; + + dev_dbg(dsp->dev, "unloading firmware\n"); + + mutex_lock(&dsp->mutex); + + /* check module by module */ + list_for_each_entry_safe(module, mtmp, &dsp->module_list, list) { + if (module->sst_fw == sst_fw) { + + /* remove runtime modules */ + list_for_each_entry_safe(runtime, rtmp, &module->runtime_list, list) { + + block_list_remove(dsp, &runtime->block_list); + list_del(&runtime->list); + kfree(runtime); + } + + /* now remove the module */ + block_list_remove(dsp, &module->block_list); + list_del(&module->list); + kfree(module); + } + } + + /* remove all scratch blocks */ + block_list_remove(dsp, &dsp->scratch_block_list); + + mutex_unlock(&dsp->mutex); +} +EXPORT_SYMBOL_GPL(sst_fw_unload); + +/* free single firmware object */ +void sst_fw_free(struct sst_fw *sst_fw) +{ + struct sst_dsp *dsp = sst_fw->dsp; + + mutex_lock(&dsp->mutex); + list_del(&sst_fw->list); + mutex_unlock(&dsp->mutex); + + if (sst_fw->dma_buf) + dma_free_coherent(dsp->dma_dev, sst_fw->size, sst_fw->dma_buf, + sst_fw->dmable_fw_paddr); + kfree(sst_fw); +} +EXPORT_SYMBOL_GPL(sst_fw_free); + +/* free all firmware objects */ +void sst_fw_free_all(struct sst_dsp *dsp) +{ + struct sst_fw *sst_fw, *t; + + mutex_lock(&dsp->mutex); + list_for_each_entry_safe(sst_fw, t, &dsp->fw_list, list) { + + list_del(&sst_fw->list); + dma_free_coherent(dsp->dev, sst_fw->size, sst_fw->dma_buf, + sst_fw->dmable_fw_paddr); + kfree(sst_fw); + } + mutex_unlock(&dsp->mutex); +} +EXPORT_SYMBOL_GPL(sst_fw_free_all); + +/* create a new SST generic module from FW template */ +struct sst_module *sst_module_new(struct sst_fw *sst_fw, + struct sst_module_template *template, void *private) +{ + struct sst_dsp *dsp = sst_fw->dsp; + struct sst_module *sst_module; + + sst_module = kzalloc(sizeof(*sst_module), GFP_KERNEL); + if (sst_module == NULL) + return NULL; + + sst_module->id = template->id; + sst_module->dsp = dsp; + sst_module->sst_fw = sst_fw; + sst_module->scratch_size = template->scratch_size; + sst_module->persistent_size = template->persistent_size; + sst_module->entry = template->entry; + sst_module->state = SST_MODULE_STATE_UNLOADED; + + INIT_LIST_HEAD(&sst_module->block_list); + INIT_LIST_HEAD(&sst_module->runtime_list); + + mutex_lock(&dsp->mutex); + list_add(&sst_module->list, &dsp->module_list); + mutex_unlock(&dsp->mutex); + + return sst_module; +} +EXPORT_SYMBOL_GPL(sst_module_new); + +/* free firmware module and remove from available list */ +void sst_module_free(struct sst_module *sst_module) +{ + struct sst_dsp *dsp = sst_module->dsp; + + mutex_lock(&dsp->mutex); + list_del(&sst_module->list); + mutex_unlock(&dsp->mutex); + + kfree(sst_module); +} +EXPORT_SYMBOL_GPL(sst_module_free); + +struct sst_module_runtime *sst_module_runtime_new(struct sst_module *module, + int id, void *private) +{ + struct sst_dsp *dsp = module->dsp; + struct sst_module_runtime *runtime; + + runtime = kzalloc(sizeof(*runtime), GFP_KERNEL); + if (runtime == NULL) + return NULL; + + runtime->id = id; + runtime->dsp = dsp; + runtime->module = module; + INIT_LIST_HEAD(&runtime->block_list); + + mutex_lock(&dsp->mutex); + list_add(&runtime->list, &module->runtime_list); + mutex_unlock(&dsp->mutex); + + return runtime; +} +EXPORT_SYMBOL_GPL(sst_module_runtime_new); + +void sst_module_runtime_free(struct sst_module_runtime *runtime) +{ + struct sst_dsp *dsp = runtime->dsp; + + mutex_lock(&dsp->mutex); + list_del(&runtime->list); + mutex_unlock(&dsp->mutex); + + kfree(runtime); +} +EXPORT_SYMBOL_GPL(sst_module_runtime_free); + +static struct sst_mem_block *find_block(struct sst_dsp *dsp, + struct sst_block_allocator *ba) +{ + struct sst_mem_block *block; + + list_for_each_entry(block, &dsp->free_block_list, list) { + if (block->type == ba->type && block->offset == ba->offset) + return block; + } + + return NULL; +} + +/* Block allocator must be on block boundary */ +static int block_alloc_contiguous(struct sst_dsp *dsp, + struct sst_block_allocator *ba, struct list_head *block_list) +{ + struct list_head tmp = LIST_HEAD_INIT(tmp); + struct sst_mem_block *block; + u32 block_start = SST_HSW_BLOCK_ANY; + int size = ba->size, offset = ba->offset; + + while (ba->size > 0) { + + block = find_block(dsp, ba); + if (!block) { + list_splice(&tmp, &dsp->free_block_list); + + ba->size = size; + ba->offset = offset; + return -ENOMEM; + } + + list_move_tail(&block->list, &tmp); + ba->offset += block->size; + ba->size -= block->size; + } + ba->size = size; + ba->offset = offset; + + list_for_each_entry(block, &tmp, list) { + + if (block->offset < block_start) + block_start = block->offset; + + list_add(&block->module_list, block_list); + + dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n", + block->type, block->index, block->offset); + } + + list_splice(&tmp, &dsp->used_block_list); + return 0; +} + +/* allocate first free DSP blocks for data - callers hold locks */ +static int block_alloc(struct sst_dsp *dsp, struct sst_block_allocator *ba, + struct list_head *block_list) +{ + struct sst_mem_block *block, *tmp; + int ret = 0; + + if (ba->size == 0) + return 0; + + /* find first free whole blocks that can hold module */ + list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) { + + /* ignore blocks with wrong type */ + if (block->type != ba->type) + continue; + + if (ba->size > block->size) + continue; + + ba->offset = block->offset; + block->bytes_used = ba->size % block->size; + list_add(&block->module_list, block_list); + list_move(&block->list, &dsp->used_block_list); + dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n", + block->type, block->index, block->offset); + return 0; + } + + /* then find free multiple blocks that can hold module */ + list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) { + + /* ignore blocks with wrong type */ + if (block->type != ba->type) + continue; + + /* do we span > 1 blocks */ + if (ba->size > block->size) { + + /* align ba to block boundary */ + ba->offset = block->offset; + + ret = block_alloc_contiguous(dsp, ba, block_list); + if (ret == 0) + return ret; + + } + } + + /* not enough free block space */ + return -ENOMEM; +} + +int sst_alloc_blocks(struct sst_dsp *dsp, struct sst_block_allocator *ba, + struct list_head *block_list) +{ + int ret; + + dev_dbg(dsp->dev, "block request 0x%x bytes at offset 0x%x type %d\n", + ba->size, ba->offset, ba->type); + + mutex_lock(&dsp->mutex); + + ret = block_alloc(dsp, ba, block_list); + if (ret < 0) { + dev_err(dsp->dev, "error: can't alloc blocks %d\n", ret); + goto out; + } + + /* prepare DSP blocks for module usage */ + ret = block_list_prepare(dsp, block_list); + if (ret < 0) + dev_err(dsp->dev, "error: prepare failed\n"); + +out: + mutex_unlock(&dsp->mutex); + return ret; +} +EXPORT_SYMBOL_GPL(sst_alloc_blocks); + +int sst_free_blocks(struct sst_dsp *dsp, struct list_head *block_list) +{ + mutex_lock(&dsp->mutex); + block_list_remove(dsp, block_list); + mutex_unlock(&dsp->mutex); + return 0; +} +EXPORT_SYMBOL_GPL(sst_free_blocks); + +/* allocate memory blocks for static module addresses - callers hold locks */ +static int block_alloc_fixed(struct sst_dsp *dsp, struct sst_block_allocator *ba, + struct list_head *block_list) +{ + struct sst_mem_block *block, *tmp; + struct sst_block_allocator ba_tmp = *ba; + u32 end = ba->offset + ba->size, block_end; + int err; + + /* only IRAM/DRAM blocks are managed */ + if (ba->type != SST_MEM_IRAM && ba->type != SST_MEM_DRAM) + return 0; + + /* are blocks already attached to this module */ + list_for_each_entry_safe(block, tmp, block_list, module_list) { + + /* ignore blocks with wrong type */ + if (block->type != ba->type) + continue; + + block_end = block->offset + block->size; + + /* find block that holds section */ + if (ba->offset >= block->offset && end <= block_end) + return 0; + + /* does block span more than 1 section */ + if (ba->offset >= block->offset && ba->offset < block_end) { + + /* align ba to block boundary */ + ba_tmp.size -= block_end - ba->offset; + ba_tmp.offset = block_end; + err = block_alloc_contiguous(dsp, &ba_tmp, block_list); + if (err < 0) + return -ENOMEM; + + /* module already owns blocks */ + return 0; + } + } + + /* find first free blocks that can hold section in free list */ + list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) { + block_end = block->offset + block->size; + + /* ignore blocks with wrong type */ + if (block->type != ba->type) + continue; + + /* find block that holds section */ + if (ba->offset >= block->offset && end <= block_end) { + + /* add block */ + list_move(&block->list, &dsp->used_block_list); + list_add(&block->module_list, block_list); + dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n", + block->type, block->index, block->offset); + return 0; + } + + /* does block span more than 1 section */ + if (ba->offset >= block->offset && ba->offset < block_end) { + + /* add block */ + list_move(&block->list, &dsp->used_block_list); + list_add(&block->module_list, block_list); + /* align ba to block boundary */ + ba_tmp.size -= block_end - ba->offset; + ba_tmp.offset = block_end; + + err = block_alloc_contiguous(dsp, &ba_tmp, block_list); + if (err < 0) + return -ENOMEM; + + return 0; + } + } + + return -ENOMEM; +} + +/* Load fixed module data into DSP memory blocks */ +int sst_module_alloc_blocks(struct sst_module *module) +{ + struct sst_dsp *dsp = module->dsp; + struct sst_fw *sst_fw = module->sst_fw; + struct sst_block_allocator ba; + int ret; + + memset(&ba, 0, sizeof(ba)); + ba.size = module->size; + ba.type = module->type; + ba.offset = module->offset; + + dev_dbg(dsp->dev, "block request 0x%x bytes at offset 0x%x type %d\n", + ba.size, ba.offset, ba.type); + + mutex_lock(&dsp->mutex); + + /* alloc blocks that includes this section */ + ret = block_alloc_fixed(dsp, &ba, &module->block_list); + if (ret < 0) { + dev_err(dsp->dev, + "error: no free blocks for section at offset 0x%x size 0x%x\n", + module->offset, module->size); + mutex_unlock(&dsp->mutex); + return -ENOMEM; + } + + /* prepare DSP blocks for module copy */ + ret = block_list_prepare(dsp, &module->block_list); + if (ret < 0) { + dev_err(dsp->dev, "error: fw module prepare failed\n"); + goto err; + } + + /* copy partial module data to blocks */ + if (dsp->fw_use_dma) { + ret = sst_dsp_dma_copyto(dsp, + dsp->addr.lpe_base + module->offset, + sst_fw->dmable_fw_paddr + module->data_offset, + module->size); + if (ret < 0) { + dev_err(dsp->dev, "error: module copy failed\n"); + goto err; + } + } else + sst_memcpy32(dsp->addr.lpe + module->offset, module->data, + module->size); + + mutex_unlock(&dsp->mutex); + return ret; + +err: + block_list_remove(dsp, &module->block_list); + mutex_unlock(&dsp->mutex); + return ret; +} +EXPORT_SYMBOL_GPL(sst_module_alloc_blocks); + +/* Unload entire module from DSP memory */ +int sst_module_free_blocks(struct sst_module *module) +{ + struct sst_dsp *dsp = module->dsp; + + mutex_lock(&dsp->mutex); + block_list_remove(dsp, &module->block_list); + mutex_unlock(&dsp->mutex); + return 0; +} +EXPORT_SYMBOL_GPL(sst_module_free_blocks); + +int sst_module_runtime_alloc_blocks(struct sst_module_runtime *runtime, + int offset) +{ + struct sst_dsp *dsp = runtime->dsp; + struct sst_module *module = runtime->module; + struct sst_block_allocator ba; + int ret; + + if (module->persistent_size == 0) + return 0; + + memset(&ba, 0, sizeof(ba)); + ba.size = module->persistent_size; + ba.type = SST_MEM_DRAM; + + mutex_lock(&dsp->mutex); + + /* do we need to allocate at a fixed address ? */ + if (offset != 0) { + + ba.offset = offset; + + dev_dbg(dsp->dev, "persistent fixed block request 0x%x bytes type %d offset 0x%x\n", + ba.size, ba.type, ba.offset); + + /* alloc blocks that includes this section */ + ret = block_alloc_fixed(dsp, &ba, &runtime->block_list); + + } else { + dev_dbg(dsp->dev, "persistent block request 0x%x bytes type %d\n", + ba.size, ba.type); + + /* alloc blocks that includes this section */ + ret = block_alloc(dsp, &ba, &runtime->block_list); + } + if (ret < 0) { + dev_err(dsp->dev, + "error: no free blocks for runtime module size 0x%x\n", + module->persistent_size); + mutex_unlock(&dsp->mutex); + return -ENOMEM; + } + runtime->persistent_offset = ba.offset; + + /* prepare DSP blocks for module copy */ + ret = block_list_prepare(dsp, &runtime->block_list); + if (ret < 0) { + dev_err(dsp->dev, "error: runtime block prepare failed\n"); + goto err; + } + + mutex_unlock(&dsp->mutex); + return ret; + +err: + block_list_remove(dsp, &module->block_list); + mutex_unlock(&dsp->mutex); + return ret; +} +EXPORT_SYMBOL_GPL(sst_module_runtime_alloc_blocks); + +int sst_module_runtime_free_blocks(struct sst_module_runtime *runtime) +{ + struct sst_dsp *dsp = runtime->dsp; + + mutex_lock(&dsp->mutex); + block_list_remove(dsp, &runtime->block_list); + mutex_unlock(&dsp->mutex); + return 0; +} +EXPORT_SYMBOL_GPL(sst_module_runtime_free_blocks); + +int sst_module_runtime_save(struct sst_module_runtime *runtime, + struct sst_module_runtime_context *context) +{ + struct sst_dsp *dsp = runtime->dsp; + struct sst_module *module = runtime->module; + int ret = 0; + + dev_dbg(dsp->dev, "saving runtime %d memory at 0x%x size 0x%x\n", + runtime->id, runtime->persistent_offset, + module->persistent_size); + + context->buffer = dma_alloc_coherent(dsp->dma_dev, + module->persistent_size, + &context->dma_buffer, GFP_DMA | GFP_KERNEL); + if (!context->buffer) { + dev_err(dsp->dev, "error: DMA context alloc failed\n"); + return -ENOMEM; + } + + mutex_lock(&dsp->mutex); + + if (dsp->fw_use_dma) { + + ret = sst_dsp_dma_get_channel(dsp, 0); + if (ret < 0) + goto err; + + ret = sst_dsp_dma_copyfrom(dsp, context->dma_buffer, + dsp->addr.lpe_base + runtime->persistent_offset, + module->persistent_size); + sst_dsp_dma_put_channel(dsp); + if (ret < 0) { + dev_err(dsp->dev, "error: context copy failed\n"); + goto err; + } + } else + sst_memcpy32(context->buffer, dsp->addr.lpe + + runtime->persistent_offset, + module->persistent_size); + +err: + mutex_unlock(&dsp->mutex); + return ret; +} +EXPORT_SYMBOL_GPL(sst_module_runtime_save); + +int sst_module_runtime_restore(struct sst_module_runtime *runtime, + struct sst_module_runtime_context *context) +{ + struct sst_dsp *dsp = runtime->dsp; + struct sst_module *module = runtime->module; + int ret = 0; + + dev_dbg(dsp->dev, "restoring runtime %d memory at 0x%x size 0x%x\n", + runtime->id, runtime->persistent_offset, + module->persistent_size); + + mutex_lock(&dsp->mutex); + + if (!context->buffer) { + dev_info(dsp->dev, "no context buffer need to restore!\n"); + goto err; + } + + if (dsp->fw_use_dma) { + + ret = sst_dsp_dma_get_channel(dsp, 0); + if (ret < 0) + goto err; + + ret = sst_dsp_dma_copyto(dsp, + dsp->addr.lpe_base + runtime->persistent_offset, + context->dma_buffer, module->persistent_size); + sst_dsp_dma_put_channel(dsp); + if (ret < 0) { + dev_err(dsp->dev, "error: module copy failed\n"); + goto err; + } + } else + sst_memcpy32(dsp->addr.lpe + runtime->persistent_offset, + context->buffer, module->persistent_size); + + dma_free_coherent(dsp->dma_dev, module->persistent_size, + context->buffer, context->dma_buffer); + context->buffer = NULL; + +err: + mutex_unlock(&dsp->mutex); + return ret; +} +EXPORT_SYMBOL_GPL(sst_module_runtime_restore); + +/* register a DSP memory block for use with FW based modules */ +struct sst_mem_block *sst_mem_block_register(struct sst_dsp *dsp, u32 offset, + u32 size, enum sst_mem_type type, const struct sst_block_ops *ops, + u32 index, void *private) +{ + struct sst_mem_block *block; + + block = kzalloc(sizeof(*block), GFP_KERNEL); + if (block == NULL) + return NULL; + + block->offset = offset; + block->size = size; + block->index = index; + block->type = type; + block->dsp = dsp; + block->private = private; + block->ops = ops; + + mutex_lock(&dsp->mutex); + list_add(&block->list, &dsp->free_block_list); + mutex_unlock(&dsp->mutex); + + return block; +} +EXPORT_SYMBOL_GPL(sst_mem_block_register); + +/* unregister all DSP memory blocks */ +void sst_mem_block_unregister_all(struct sst_dsp *dsp) +{ + struct sst_mem_block *block, *tmp; + + mutex_lock(&dsp->mutex); + + /* unregister used blocks */ + list_for_each_entry_safe(block, tmp, &dsp->used_block_list, list) { + list_del(&block->list); + kfree(block); + } + + /* unregister free blocks */ + list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) { + list_del(&block->list); + kfree(block); + } + + mutex_unlock(&dsp->mutex); +} +EXPORT_SYMBOL_GPL(sst_mem_block_unregister_all); + +/* allocate scratch buffer blocks */ +int sst_block_alloc_scratch(struct sst_dsp *dsp) +{ + struct sst_module *module; + struct sst_block_allocator ba; + int ret; + + mutex_lock(&dsp->mutex); + + /* calculate required scratch size */ + dsp->scratch_size = 0; + list_for_each_entry(module, &dsp->module_list, list) { + dev_dbg(dsp->dev, "module %d scratch req 0x%x bytes\n", + module->id, module->scratch_size); + if (dsp->scratch_size < module->scratch_size) + dsp->scratch_size = module->scratch_size; + } + + dev_dbg(dsp->dev, "scratch buffer required is 0x%x bytes\n", + dsp->scratch_size); + + if (dsp->scratch_size == 0) { + dev_info(dsp->dev, "no modules need scratch buffer\n"); + mutex_unlock(&dsp->mutex); + return 0; + } + + /* allocate blocks for module scratch buffers */ + dev_dbg(dsp->dev, "allocating scratch blocks\n"); + + ba.size = dsp->scratch_size; + ba.type = SST_MEM_DRAM; + + /* do we need to allocate at fixed offset */ + if (dsp->scratch_offset != 0) { + + dev_dbg(dsp->dev, "block request 0x%x bytes type %d at 0x%x\n", + ba.size, ba.type, ba.offset); + + ba.offset = dsp->scratch_offset; + + /* alloc blocks that includes this section */ + ret = block_alloc_fixed(dsp, &ba, &dsp->scratch_block_list); + + } else { + dev_dbg(dsp->dev, "block request 0x%x bytes type %d\n", + ba.size, ba.type); + + ba.offset = 0; + ret = block_alloc(dsp, &ba, &dsp->scratch_block_list); + } + if (ret < 0) { + dev_err(dsp->dev, "error: can't alloc scratch blocks\n"); + mutex_unlock(&dsp->mutex); + return ret; + } + + ret = block_list_prepare(dsp, &dsp->scratch_block_list); + if (ret < 0) { + dev_err(dsp->dev, "error: scratch block prepare failed\n"); + mutex_unlock(&dsp->mutex); + return ret; + } + + /* assign the same offset of scratch to each module */ + dsp->scratch_offset = ba.offset; + mutex_unlock(&dsp->mutex); + return dsp->scratch_size; +} +EXPORT_SYMBOL_GPL(sst_block_alloc_scratch); + +/* free all scratch blocks */ +void sst_block_free_scratch(struct sst_dsp *dsp) +{ + mutex_lock(&dsp->mutex); + block_list_remove(dsp, &dsp->scratch_block_list); + mutex_unlock(&dsp->mutex); +} +EXPORT_SYMBOL_GPL(sst_block_free_scratch); + +/* get a module from it's unique ID */ +struct sst_module *sst_module_get_from_id(struct sst_dsp *dsp, u32 id) +{ + struct sst_module *module; + + mutex_lock(&dsp->mutex); + + list_for_each_entry(module, &dsp->module_list, list) { + if (module->id == id) { + mutex_unlock(&dsp->mutex); + return module; + } + } + + mutex_unlock(&dsp->mutex); + return NULL; +} +EXPORT_SYMBOL_GPL(sst_module_get_from_id); + +struct sst_module_runtime *sst_module_runtime_get_from_id( + struct sst_module *module, u32 id) +{ + struct sst_module_runtime *runtime; + struct sst_dsp *dsp = module->dsp; + + mutex_lock(&dsp->mutex); + + list_for_each_entry(runtime, &module->runtime_list, list) { + if (runtime->id == id) { + mutex_unlock(&dsp->mutex); + return runtime; + } + } + + mutex_unlock(&dsp->mutex); + return NULL; +} +EXPORT_SYMBOL_GPL(sst_module_runtime_get_from_id); + +/* returns block address in DSP address space */ +u32 sst_dsp_get_offset(struct sst_dsp *dsp, u32 offset, + enum sst_mem_type type) +{ + switch (type) { + case SST_MEM_IRAM: + return offset - dsp->addr.iram_offset + + dsp->addr.dsp_iram_offset; + case SST_MEM_DRAM: + return offset - dsp->addr.dram_offset + + dsp->addr.dsp_dram_offset; + default: + return 0; + } +} +EXPORT_SYMBOL_GPL(sst_dsp_get_offset); + +struct sst_dsp *sst_dsp_new(struct device *dev, + struct sst_dsp_device *sst_dev, struct sst_pdata *pdata) +{ + struct sst_dsp *sst; + int err; + + dev_dbg(dev, "initialising audio DSP id 0x%x\n", pdata->id); + + sst = devm_kzalloc(dev, sizeof(*sst), GFP_KERNEL); + if (sst == NULL) + return NULL; + + spin_lock_init(&sst->spinlock); + mutex_init(&sst->mutex); + sst->dev = dev; + sst->dma_dev = pdata->dma_dev; + sst->thread_context = sst_dev->thread_context; + sst->sst_dev = sst_dev; + sst->id = pdata->id; + sst->irq = pdata->irq; + sst->ops = sst_dev->ops; + sst->pdata = pdata; + INIT_LIST_HEAD(&sst->used_block_list); + INIT_LIST_HEAD(&sst->free_block_list); + INIT_LIST_HEAD(&sst->module_list); + INIT_LIST_HEAD(&sst->fw_list); + INIT_LIST_HEAD(&sst->scratch_block_list); + + /* Initialise SST Audio DSP */ + if (sst->ops->init) { + err = sst->ops->init(sst, pdata); + if (err < 0) + return NULL; + } + + /* Register the ISR */ + err = request_threaded_irq(sst->irq, sst->ops->irq_handler, + sst_dev->thread, IRQF_SHARED, "AudioDSP", sst); + if (err) + goto irq_err; + + err = sst_dma_new(sst); + if (err) { + dev_err(dev, "sst_dma_new failed %d\n", err); + goto dma_err; + } + + return sst; + +dma_err: + free_irq(sst->irq, sst); +irq_err: + if (sst->ops->free) + sst->ops->free(sst); + + return NULL; +} +EXPORT_SYMBOL_GPL(sst_dsp_new); + +void sst_dsp_free(struct sst_dsp *sst) +{ + free_irq(sst->irq, sst); + if (sst->ops->free) + sst->ops->free(sst); + + sst_dma_free(sst->dma); +} +EXPORT_SYMBOL_GPL(sst_dsp_free); + +MODULE_DESCRIPTION("Intel SST Firmware Loader"); +MODULE_LICENSE("GPL v2"); |