diff options
Diffstat (limited to 'drivers/staging/media/atomisp/pci/sh_css_firmware.c')
| -rw-r--r-- | drivers/staging/media/atomisp/pci/sh_css_firmware.c | 333 |
1 files changed, 333 insertions, 0 deletions
diff --git a/drivers/staging/media/atomisp/pci/sh_css_firmware.c b/drivers/staging/media/atomisp/pci/sh_css_firmware.c new file mode 100644 index 000000000000..eb3c01574853 --- /dev/null +++ b/drivers/staging/media/atomisp/pci/sh_css_firmware.c @@ -0,0 +1,333 @@ +/* + * Support for Intel Camera Imaging ISP subsystem. + * Copyright (c) 2015, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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/slab.h> +#include <linux/vmalloc.h> + +#include <math_support.h> +#include "platform_support.h" +#include "sh_css_firmware.h" + +#include "sh_css_defs.h" +#include "ia_css_debug.h" +#include "sh_css_internal.h" +#include "ia_css_isp_param.h" + +#include "memory_access.h" +#include "assert_support.h" +#include "string_support.h" + +#include "isp.h" /* PMEM_WIDTH_LOG2 */ + +#include "ia_css_isp_params.h" +#include "ia_css_isp_configs.h" +#include "ia_css_isp_states.h" + +#define _STR(x) #x +#define STR(x) _STR(x) + +struct firmware_header { + struct sh_css_fw_bi_file_h file_header; + struct ia_css_fw_info binary_header; +}; + +struct fw_param { + const char *name; + const void *buffer; +}; + +static struct firmware_header *firmware_header; + +/* The string STR is a place holder + * which will be replaced with the actual RELEASE_VERSION + * during package generation. Please do not modify */ +static const char *isp2400_release_version = STR(irci_stable_candrpv_0415_20150521_0458); +static const char *isp2401_release_version = STR(irci_ecr - master_20150911_0724); + +#define MAX_FW_REL_VER_NAME 300 +static char FW_rel_ver_name[MAX_FW_REL_VER_NAME] = "---"; + +struct ia_css_fw_info sh_css_sp_fw; +struct ia_css_blob_descr *sh_css_blob_info; /* Only ISP blob info (no SP) */ +unsigned int sh_css_num_binaries; /* This includes 1 SP binary */ + +static struct fw_param *fw_minibuffer; + +char *sh_css_get_fw_version(void) +{ + return FW_rel_ver_name; +} + +/* + * Split the loaded firmware into blobs + */ + +/* Setup sp/sp1 binary */ +static enum ia_css_err +setup_binary(struct ia_css_fw_info *fw, const char *fw_data, + struct ia_css_fw_info *sh_css_fw, unsigned int binary_id) { + const char *blob_data; + + if ((!fw) || (!fw_data)) + return IA_CSS_ERR_INVALID_ARGUMENTS; + + blob_data = fw_data + fw->blob.offset; + + *sh_css_fw = *fw; + + sh_css_fw->blob.code = vmalloc(fw->blob.size); + if (!sh_css_fw->blob.code) + return IA_CSS_ERR_CANNOT_ALLOCATE_MEMORY; + + memcpy((void *)sh_css_fw->blob.code, blob_data, fw->blob.size); + sh_css_fw->blob.data = (char *)sh_css_fw->blob.code + fw->blob.data_source; + fw_minibuffer[binary_id].buffer = sh_css_fw->blob.code; + + return IA_CSS_SUCCESS; +} + +enum ia_css_err +sh_css_load_blob_info(const char *fw, const struct ia_css_fw_info *bi, + struct ia_css_blob_descr *bd, + unsigned int index) { + const char *name; + const unsigned char *blob; + + if ((!fw) || (!bd)) + return IA_CSS_ERR_INVALID_ARGUMENTS; + + /* Special case: only one binary in fw */ + if (!bi) bi = (const struct ia_css_fw_info *)fw; + + name = fw + bi->blob.prog_name_offset; + blob = (const unsigned char *)fw + bi->blob.offset; + + /* sanity check */ + if (bi->blob.size != bi->blob.text_size + bi->blob.icache_size + bi->blob.data_size + bi->blob.padding_size) + { + /* sanity check, note the padding bytes added for section to DDR alignment */ + return IA_CSS_ERR_INVALID_ARGUMENTS; + } + + if ((bi->blob.offset % (1UL << (ISP_PMEM_WIDTH_LOG2 - 3))) != 0) + return IA_CSS_ERR_INVALID_ARGUMENTS; + + bd->blob = blob; + bd->header = *bi; + + if (bi->type == ia_css_isp_firmware || bi->type == ia_css_sp_firmware) + { + char *namebuffer; + + namebuffer = kstrdup(name, GFP_KERNEL); + if (!namebuffer) + return IA_CSS_ERR_CANNOT_ALLOCATE_MEMORY; + bd->name = fw_minibuffer[index].name = namebuffer; + } else + { + bd->name = name; + } + + if (bi->type == ia_css_isp_firmware) + { + size_t paramstruct_size = sizeof(struct ia_css_memory_offsets); + size_t configstruct_size = sizeof(struct ia_css_config_memory_offsets); + size_t statestruct_size = sizeof(struct ia_css_state_memory_offsets); + + char *parambuf = kmalloc(paramstruct_size + configstruct_size + + statestruct_size, + GFP_KERNEL); + if (!parambuf) + return IA_CSS_ERR_CANNOT_ALLOCATE_MEMORY; + + bd->mem_offsets.array[IA_CSS_PARAM_CLASS_PARAM].ptr = NULL; + bd->mem_offsets.array[IA_CSS_PARAM_CLASS_CONFIG].ptr = NULL; + bd->mem_offsets.array[IA_CSS_PARAM_CLASS_STATE].ptr = NULL; + + fw_minibuffer[index].buffer = parambuf; + + /* copy ia_css_memory_offsets */ + memcpy(parambuf, (void *)(fw + + bi->blob.memory_offsets.offsets[IA_CSS_PARAM_CLASS_PARAM]), + paramstruct_size); + bd->mem_offsets.array[IA_CSS_PARAM_CLASS_PARAM].ptr = parambuf; + + /* copy ia_css_config_memory_offsets */ + memcpy(parambuf + paramstruct_size, + (void *)(fw + bi->blob.memory_offsets.offsets[IA_CSS_PARAM_CLASS_CONFIG]), + configstruct_size); + bd->mem_offsets.array[IA_CSS_PARAM_CLASS_CONFIG].ptr = parambuf + + paramstruct_size; + + /* copy ia_css_state_memory_offsets */ + memcpy(parambuf + paramstruct_size + configstruct_size, + (void *)(fw + bi->blob.memory_offsets.offsets[IA_CSS_PARAM_CLASS_STATE]), + statestruct_size); + bd->mem_offsets.array[IA_CSS_PARAM_CLASS_STATE].ptr = parambuf + + paramstruct_size + configstruct_size; + } + return IA_CSS_SUCCESS; +} + +bool +sh_css_check_firmware_version(struct device *dev, const char *fw_data) +{ + struct sh_css_fw_bi_file_h *file_header; + + const char *release_version; + + if (!atomisp_hw_is_isp2401) + release_version = isp2400_release_version; + else + release_version = isp2401_release_version; + + firmware_header = (struct firmware_header *)fw_data; + file_header = &firmware_header->file_header; + + if (strcmp(file_header->version, release_version) != 0) { + dev_err(dev, "Firmware version may not be compatible with this driver\n"); + dev_err(dev, "Expecting version '%s', but firmware is '%s'.\n", + release_version, file_header->version); + } + + /* For now, let's just accept a wrong version, even if wrong */ + return true; +} + +enum ia_css_err +sh_css_load_firmware(struct device *dev, const char *fw_data, + unsigned int fw_size) { + unsigned int i; + struct ia_css_fw_info *binaries; + struct sh_css_fw_bi_file_h *file_header; + bool valid_firmware = false; + const char *release_version; + + if (!atomisp_hw_is_isp2401) + release_version = isp2400_release_version; + else + release_version = isp2401_release_version; + + firmware_header = (struct firmware_header *)fw_data; + file_header = &firmware_header->file_header; + binaries = &firmware_header->binary_header; + strscpy(FW_rel_ver_name, file_header->version, min(sizeof(FW_rel_ver_name), sizeof(file_header->version))); + valid_firmware = sh_css_check_firmware_version(dev, fw_data); + if (!valid_firmware) { + IA_CSS_ERROR("CSS code version (%s) and firmware version (%s) mismatch!", + file_header->version, release_version); + return IA_CSS_ERR_VERSION_MISMATCH; + } else { + IA_CSS_LOG("successfully load firmware version %s", release_version); + } + + /* some sanity checks */ + if (!fw_data || fw_size < sizeof(struct sh_css_fw_bi_file_h)) + return IA_CSS_ERR_INTERNAL_ERROR; + + if (file_header->h_size != sizeof(struct sh_css_fw_bi_file_h)) + return IA_CSS_ERR_INTERNAL_ERROR; + + sh_css_num_binaries = file_header->binary_nr; + /* Only allocate memory for ISP blob info */ + if (sh_css_num_binaries > NUM_OF_SPS) + { + sh_css_blob_info = kmalloc( + (sh_css_num_binaries - NUM_OF_SPS) * + sizeof(*sh_css_blob_info), GFP_KERNEL); + if (!sh_css_blob_info) + return IA_CSS_ERR_CANNOT_ALLOCATE_MEMORY; + } else { + sh_css_blob_info = NULL; + } + + fw_minibuffer = kcalloc(sh_css_num_binaries, sizeof(struct fw_param), + GFP_KERNEL); + if (!fw_minibuffer) + return IA_CSS_ERR_CANNOT_ALLOCATE_MEMORY; + + for (i = 0; i < sh_css_num_binaries; i++) + { + struct ia_css_fw_info *bi = &binaries[i]; + /* note: the var below is made static as it is quite large; + if it is not static it ends up on the stack which could + cause issues for drivers + */ + static struct ia_css_blob_descr bd; + enum ia_css_err err; + + err = sh_css_load_blob_info(fw_data, bi, &bd, i); + + if (err != IA_CSS_SUCCESS) + return IA_CSS_ERR_INTERNAL_ERROR; + + if (bi->blob.offset + bi->blob.size > fw_size) + return IA_CSS_ERR_INTERNAL_ERROR; + + if (bi->type == ia_css_sp_firmware) { + if (i != SP_FIRMWARE) + return IA_CSS_ERR_INTERNAL_ERROR; + err = setup_binary(bi, fw_data, &sh_css_sp_fw, i); + if (err != IA_CSS_SUCCESS) + return err; + } else { + /* All subsequent binaries (including bootloaders) (i>NUM_OF_SPS) are ISP firmware */ + if (i < NUM_OF_SPS) + return IA_CSS_ERR_INTERNAL_ERROR; + + if (bi->type != ia_css_isp_firmware) + return IA_CSS_ERR_INTERNAL_ERROR; + if (!sh_css_blob_info) /* cannot happen but KW does not see this */ + return IA_CSS_ERR_INTERNAL_ERROR; + sh_css_blob_info[i - NUM_OF_SPS] = bd; + } + } + + return IA_CSS_SUCCESS; +} + +void sh_css_unload_firmware(void) +{ + /* release firmware minibuffer */ + if (fw_minibuffer) { + unsigned int i = 0; + + for (i = 0; i < sh_css_num_binaries; i++) { + if (fw_minibuffer[i].name) + kfree((void *)fw_minibuffer[i].name); + if (fw_minibuffer[i].buffer) + vfree((void *)fw_minibuffer[i].buffer); + } + kfree(fw_minibuffer); + fw_minibuffer = NULL; + } + + memset(&sh_css_sp_fw, 0, sizeof(sh_css_sp_fw)); + kfree(sh_css_blob_info); + sh_css_blob_info = NULL; + sh_css_num_binaries = 0; +} + +hrt_vaddress +sh_css_load_blob(const unsigned char *blob, unsigned int size) +{ + hrt_vaddress target_addr = mmgr_malloc(size); + /* this will allocate memory aligned to a DDR word boundary which + is required for the CSS DMA to read the instructions. */ + + assert(blob); + if (target_addr) + mmgr_store(target_addr, blob, size); + return target_addr; +} |