diff options
Diffstat (limited to 'drivers/staging/intel_sst/intel_sst_dsp.c')
-rw-r--r-- | drivers/staging/intel_sst/intel_sst_dsp.c | 496 |
1 files changed, 0 insertions, 496 deletions
diff --git a/drivers/staging/intel_sst/intel_sst_dsp.c b/drivers/staging/intel_sst/intel_sst_dsp.c deleted file mode 100644 index 426d2b92073a..000000000000 --- a/drivers/staging/intel_sst/intel_sst_dsp.c +++ /dev/null @@ -1,496 +0,0 @@ -/* - * 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; -} - |