| /* |
| * intel_sst_dsp.c - Intel SST Driver for audio engine |
| * |
| * Copyright (C) 2008-10 Intel Corp |
| * Authors: Vinod Koul <vinod.koul@intel.com> |
| * Harsha Priya <priya.harsha@intel.com> |
| * Dharageswari R <dharageswari.r@intel.com> |
| * KP Jeeja <jeeja.kp@intel.com> |
| * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
| * |
| * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| * |
| * This driver exposes the audio engine functionalities to the ALSA |
| * and middleware. |
| * |
| * This file contains all dsp controlling functions like firmware download, |
| * setting/resetting dsp cores, etc |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/pci.h> |
| #include <linux/fs.h> |
| #include <linux/firmware.h> |
| #include "intel_sst.h" |
| #include "intel_sst_ioctl.h" |
| #include "intel_sst_fw_ipc.h" |
| #include "intel_sst_common.h" |
| |
| |
| /** |
| * intel_sst_reset_dsp_mrst - Resetting SST DSP |
| * |
| * This resets DSP in case of MRST platfroms |
| */ |
| static int intel_sst_reset_dsp_mrst(void) |
| { |
| union config_status_reg csr; |
| |
| pr_debug("Resetting the DSP in mrst\n"); |
| csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); |
| csr.full |= 0x382; |
| sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); |
| csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); |
| csr.part.strb_cntr_rst = 0; |
| csr.part.run_stall = 0x1; |
| csr.part.bypass = 0x7; |
| csr.part.sst_reset = 0x1; |
| sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); |
| return 0; |
| } |
| |
| /** |
| * intel_sst_reset_dsp_medfield - Resetting SST DSP |
| * |
| * This resets DSP in case of Medfield platfroms |
| */ |
| static int intel_sst_reset_dsp_medfield(void) |
| { |
| union config_status_reg csr; |
| |
| pr_debug("Resetting the DSP in medfield\n"); |
| csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); |
| csr.full |= 0x382; |
| sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); |
| |
| return 0; |
| } |
| |
| /** |
| * sst_start_mrst - Start the SST DSP processor |
| * |
| * This starts the DSP in MRST platfroms |
| */ |
| static int sst_start_mrst(void) |
| { |
| union config_status_reg csr; |
| |
| csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); |
| csr.part.bypass = 0; |
| sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); |
| csr.part.run_stall = 0; |
| csr.part.sst_reset = 0; |
| csr.part.strb_cntr_rst = 1; |
| pr_debug("Setting SST to execute_mrst 0x%x\n", csr.full); |
| sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); |
| |
| return 0; |
| } |
| |
| /** |
| * sst_start_medfield - Start the SST DSP processor |
| * |
| * This starts the DSP in Medfield platfroms |
| */ |
| static int sst_start_medfield(void) |
| { |
| union config_status_reg csr; |
| |
| csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); |
| csr.part.bypass = 0; |
| sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); |
| csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); |
| csr.part.mfld_strb = 1; |
| sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); |
| csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); |
| csr.part.run_stall = 0; |
| csr.part.sst_reset = 0; |
| pr_debug("Starting the DSP_medfld %x\n", csr.full); |
| sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); |
| pr_debug("Starting the DSP_medfld\n"); |
| |
| return 0; |
| } |
| |
| /** |
| * sst_parse_module - Parse audio FW modules |
| * |
| * @module: FW module header |
| * |
| * Parses modules that need to be placed in SST IRAM and DRAM |
| * returns error or 0 if module sizes are proper |
| */ |
| static int sst_parse_module(struct fw_module_header *module) |
| { |
| struct dma_block_info *block; |
| u32 count; |
| void __iomem *ram; |
| |
| pr_debug("module sign %s size %x blocks %x type %x\n", |
| module->signature, module->mod_size, |
| module->blocks, module->type); |
| pr_debug("module entrypoint 0x%x\n", module->entry_point); |
| |
| block = (void *)module + sizeof(*module); |
| |
| for (count = 0; count < module->blocks; count++) { |
| if (block->size <= 0) { |
| pr_err("block size invalid\n"); |
| return -EINVAL; |
| } |
| switch (block->type) { |
| case SST_IRAM: |
| ram = sst_drv_ctx->iram; |
| break; |
| case SST_DRAM: |
| ram = sst_drv_ctx->dram; |
| break; |
| default: |
| pr_err("wrong ram type0x%x in block0x%x\n", |
| block->type, count); |
| return -EINVAL; |
| } |
| memcpy_toio(ram + block->ram_offset, |
| (void *)block + sizeof(*block), block->size); |
| block = (void *)block + sizeof(*block) + block->size; |
| } |
| return 0; |
| } |
| |
| /** |
| * sst_parse_fw_image - parse and load FW |
| * |
| * @sst_fw: pointer to audio fw |
| * |
| * This function is called to parse and download the FW image |
| */ |
| static int sst_parse_fw_image(const struct firmware *sst_fw) |
| { |
| struct fw_header *header; |
| u32 count; |
| int ret_val; |
| struct fw_module_header *module; |
| |
| BUG_ON(!sst_fw); |
| |
| /* Read the header information from the data pointer */ |
| header = (struct fw_header *)sst_fw->data; |
| |
| /* verify FW */ |
| if ((strncmp(header->signature, SST_FW_SIGN, 4) != 0) || |
| (sst_fw->size != header->file_size + sizeof(*header))) { |
| /* Invalid FW signature */ |
| pr_err("Invalid FW sign/filesize mismatch\n"); |
| return -EINVAL; |
| } |
| pr_debug("header sign=%s size=%x modules=%x fmt=%x size=%x\n", |
| header->signature, header->file_size, header->modules, |
| header->file_format, sizeof(*header)); |
| module = (void *)sst_fw->data + sizeof(*header); |
| for (count = 0; count < header->modules; count++) { |
| /* module */ |
| ret_val = sst_parse_module(module); |
| if (ret_val) |
| return ret_val; |
| module = (void *)module + sizeof(*module) + module->mod_size ; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * sst_load_fw - function to load FW into DSP |
| * |
| * @fw: Pointer to driver loaded FW |
| * @context: driver context |
| * |
| * This function is called by OS when the FW is loaded into kernel |
| */ |
| int sst_load_fw(const struct firmware *fw, void *context) |
| { |
| int ret_val; |
| |
| pr_debug("load_fw called\n"); |
| BUG_ON(!fw); |
| |
| if (sst_drv_ctx->pci_id == SST_MRST_PCI_ID) |
| ret_val = intel_sst_reset_dsp_mrst(); |
| else if (sst_drv_ctx->pci_id == SST_MFLD_PCI_ID) |
| ret_val = intel_sst_reset_dsp_medfield(); |
| if (ret_val) |
| return ret_val; |
| |
| ret_val = sst_parse_fw_image(fw); |
| if (ret_val) |
| return ret_val; |
| mutex_lock(&sst_drv_ctx->sst_lock); |
| sst_drv_ctx->sst_state = SST_FW_LOADED; |
| mutex_unlock(&sst_drv_ctx->sst_lock); |
| /* 7. ask scu to reset the bypass bits */ |
| /* 8.bring sst out of reset */ |
| if (sst_drv_ctx->pci_id == SST_MRST_PCI_ID) |
| ret_val = sst_start_mrst(); |
| else if (sst_drv_ctx->pci_id == SST_MFLD_PCI_ID) |
| ret_val = sst_start_medfield(); |
| if (ret_val) |
| return ret_val; |
| |
| pr_debug("fw loaded successful!!!\n"); |
| return ret_val; |
| } |
| |
| /*This function is called when any codec/post processing library |
| needs to be downloaded*/ |
| static int sst_download_library(const struct firmware *fw_lib, |
| struct snd_sst_lib_download_info *lib) |
| { |
| /* send IPC message and wait */ |
| int i; |
| u8 pvt_id; |
| struct ipc_post *msg = NULL; |
| union config_status_reg csr; |
| struct snd_sst_str_type str_type = {0}; |
| int retval = 0; |
| |
| if (sst_create_large_msg(&msg)) |
| return -ENOMEM; |
| |
| pvt_id = sst_assign_pvt_id(sst_drv_ctx); |
| i = sst_get_block_stream(sst_drv_ctx); |
| pr_debug("alloc block allocated = %d, pvt_id %d\n", i, pvt_id); |
| if (i < 0) { |
| kfree(msg); |
| return -ENOMEM; |
| } |
| sst_drv_ctx->alloc_block[i].sst_id = pvt_id; |
| sst_fill_header(&msg->header, IPC_IA_PREP_LIB_DNLD, 1, pvt_id); |
| msg->header.part.data = sizeof(u32) + sizeof(str_type); |
| str_type.codec_type = lib->dload_lib.lib_info.lib_type; |
| /*str_type.pvt_id = pvt_id;*/ |
| memcpy(msg->mailbox_data, &msg->header, sizeof(u32)); |
| memcpy(msg->mailbox_data + sizeof(u32), &str_type, sizeof(str_type)); |
| spin_lock(&sst_drv_ctx->list_spin_lock); |
| list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list); |
| spin_unlock(&sst_drv_ctx->list_spin_lock); |
| sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); |
| retval = sst_wait_timeout(sst_drv_ctx, &sst_drv_ctx->alloc_block[i]); |
| if (retval) { |
| /* error */ |
| sst_drv_ctx->alloc_block[i].sst_id = BLOCK_UNINIT; |
| pr_err("Prep codec downloaded failed %d\n", |
| retval); |
| return -EIO; |
| } |
| pr_debug("FW responded, ready for download now...\n"); |
| /* downloading on success */ |
| mutex_lock(&sst_drv_ctx->sst_lock); |
| sst_drv_ctx->sst_state = SST_FW_LOADED; |
| mutex_unlock(&sst_drv_ctx->sst_lock); |
| csr.full = readl(sst_drv_ctx->shim + SST_CSR); |
| csr.part.run_stall = 1; |
| sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); |
| |
| csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); |
| csr.part.bypass = 0x7; |
| sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); |
| |
| sst_parse_fw_image(fw_lib); |
| |
| /* set the FW to running again */ |
| csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); |
| csr.part.bypass = 0x0; |
| sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); |
| |
| csr.full = sst_shim_read(sst_drv_ctx->shim, SST_CSR); |
| csr.part.run_stall = 0; |
| sst_shim_write(sst_drv_ctx->shim, SST_CSR, csr.full); |
| |
| /* send download complete and wait */ |
| if (sst_create_large_msg(&msg)) { |
| sst_drv_ctx->alloc_block[i].sst_id = BLOCK_UNINIT; |
| return -ENOMEM; |
| } |
| |
| sst_fill_header(&msg->header, IPC_IA_LIB_DNLD_CMPLT, 1, pvt_id); |
| sst_drv_ctx->alloc_block[i].sst_id = pvt_id; |
| msg->header.part.data = sizeof(u32) + sizeof(*lib); |
| lib->pvt_id = pvt_id; |
| memcpy(msg->mailbox_data, &msg->header, sizeof(u32)); |
| memcpy(msg->mailbox_data + sizeof(u32), lib, sizeof(*lib)); |
| spin_lock(&sst_drv_ctx->list_spin_lock); |
| list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list); |
| spin_unlock(&sst_drv_ctx->list_spin_lock); |
| sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); |
| pr_debug("Waiting for FW response Download complete\n"); |
| sst_drv_ctx->alloc_block[i].ops_block.condition = false; |
| retval = sst_wait_timeout(sst_drv_ctx, &sst_drv_ctx->alloc_block[i]); |
| if (retval) { |
| /* error */ |
| mutex_lock(&sst_drv_ctx->sst_lock); |
| sst_drv_ctx->sst_state = SST_UN_INIT; |
| mutex_unlock(&sst_drv_ctx->sst_lock); |
| sst_drv_ctx->alloc_block[i].sst_id = BLOCK_UNINIT; |
| return -EIO; |
| } |
| |
| pr_debug("FW success on Download complete\n"); |
| sst_drv_ctx->alloc_block[i].sst_id = BLOCK_UNINIT; |
| mutex_lock(&sst_drv_ctx->sst_lock); |
| sst_drv_ctx->sst_state = SST_FW_RUNNING; |
| mutex_unlock(&sst_drv_ctx->sst_lock); |
| return 0; |
| |
| } |
| |
| /* This function is called before downloading the codec/postprocessing |
| library is set for download to SST DSP*/ |
| static int sst_validate_library(const struct firmware *fw_lib, |
| struct lib_slot_info *slot, |
| u32 *entry_point) |
| { |
| struct fw_header *header; |
| struct fw_module_header *module; |
| struct dma_block_info *block; |
| unsigned int n_blk, isize = 0, dsize = 0; |
| int err = 0; |
| |
| header = (struct fw_header *)fw_lib->data; |
| if (header->modules != 1) { |
| pr_err("Module no mismatch found\n"); |
| err = -EINVAL; |
| goto exit; |
| } |
| module = (void *)fw_lib->data + sizeof(*header); |
| *entry_point = module->entry_point; |
| pr_debug("Module entry point 0x%x\n", *entry_point); |
| pr_debug("Module Sign %s, Size 0x%x, Blocks 0x%x Type 0x%x\n", |
| module->signature, module->mod_size, |
| module->blocks, module->type); |
| |
| block = (void *)module + sizeof(*module); |
| for (n_blk = 0; n_blk < module->blocks; n_blk++) { |
| switch (block->type) { |
| case SST_IRAM: |
| isize += block->size; |
| break; |
| case SST_DRAM: |
| dsize += block->size; |
| break; |
| default: |
| pr_err("Invalid block type for 0x%x\n", n_blk); |
| err = -EINVAL; |
| goto exit; |
| } |
| block = (void *)block + sizeof(*block) + block->size; |
| } |
| if (isize > slot->iram_size || dsize > slot->dram_size) { |
| pr_err("library exceeds size allocated\n"); |
| err = -EINVAL; |
| goto exit; |
| } else |
| pr_debug("Library is safe for download...\n"); |
| |
| pr_debug("iram 0x%x, dram 0x%x, iram 0x%x, dram 0x%x\n", |
| isize, dsize, slot->iram_size, slot->dram_size); |
| exit: |
| return err; |
| |
| } |
| |
| /* This function is called when FW requests for a particular library download |
| This function prepares the library to download*/ |
| int sst_load_library(struct snd_sst_lib_download *lib, u8 ops) |
| { |
| char buf[20]; |
| const char *type, *dir; |
| int len = 0, error = 0; |
| u32 entry_point; |
| const struct firmware *fw_lib; |
| struct snd_sst_lib_download_info dload_info = {{{0},},}; |
| |
| memset(buf, 0, sizeof(buf)); |
| |
| pr_debug("Lib Type 0x%x, Slot 0x%x, ops 0x%x\n", |
| lib->lib_info.lib_type, lib->slot_info.slot_num, ops); |
| pr_debug("Version 0x%x, name %s, caps 0x%x media type 0x%x\n", |
| lib->lib_info.lib_version, lib->lib_info.lib_name, |
| lib->lib_info.lib_caps, lib->lib_info.media_type); |
| |
| pr_debug("IRAM Size 0x%x, offset 0x%x\n", |
| lib->slot_info.iram_size, lib->slot_info.iram_offset); |
| pr_debug("DRAM Size 0x%x, offset 0x%x\n", |
| lib->slot_info.dram_size, lib->slot_info.dram_offset); |
| |
| switch (lib->lib_info.lib_type) { |
| case SST_CODEC_TYPE_MP3: |
| type = "mp3_"; |
| break; |
| case SST_CODEC_TYPE_AAC: |
| type = "aac_"; |
| break; |
| case SST_CODEC_TYPE_AACP: |
| type = "aac_v1_"; |
| break; |
| case SST_CODEC_TYPE_eAACP: |
| type = "aac_v2_"; |
| break; |
| case SST_CODEC_TYPE_WMA9: |
| type = "wma9_"; |
| break; |
| default: |
| pr_err("Invalid codec type\n"); |
| error = -EINVAL; |
| goto wake; |
| } |
| |
| if (ops == STREAM_OPS_CAPTURE) |
| dir = "enc_"; |
| else |
| dir = "dec_"; |
| len = strlen(type) + strlen(dir); |
| strncpy(buf, type, sizeof(buf)-1); |
| strncpy(buf + strlen(type), dir, sizeof(buf)-strlen(type)-1); |
| len += snprintf(buf + len, sizeof(buf) - len, "%d", |
| lib->slot_info.slot_num); |
| len += snprintf(buf + len, sizeof(buf) - len, ".bin"); |
| |
| pr_debug("Requesting %s\n", buf); |
| |
| error = request_firmware(&fw_lib, buf, &sst_drv_ctx->pci->dev); |
| if (error) { |
| pr_err("library load failed %d\n", error); |
| goto wake; |
| } |
| error = sst_validate_library(fw_lib, &lib->slot_info, &entry_point); |
| if (error) |
| goto wake_free; |
| |
| lib->mod_entry_pt = entry_point; |
| memcpy(&dload_info.dload_lib, lib, sizeof(*lib)); |
| error = sst_download_library(fw_lib, &dload_info); |
| if (error) |
| goto wake_free; |
| |
| /* lib is downloaded and init send alloc again */ |
| pr_debug("Library is downloaded now...\n"); |
| wake_free: |
| /* sst_wake_up_alloc_block(sst_drv_ctx, pvt_id, error, NULL); */ |
| release_firmware(fw_lib); |
| wake: |
| return error; |
| } |
| |