linux/drivers/misc/mei/vsc-fw-loader.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2023, Intel Corporation.
 * Intel Visual Sensing Controller Transport Layer Linux driver
 */

#include <linux/acpi.h>
#include <linux/align.h>
#include <linux/bitfield.h>
#include <linux/bits.h>
#include <linux/cleanup.h>
#include <linux/firmware.h>
#include <linux/sizes.h>
#include <linux/slab.h>
#include <linux/string_helpers.h>
#include <linux/types.h>

#include <asm-generic/unaligned.h>

#include "vsc-tp.h"

#define VSC_MAGIC_NUM …
#define VSC_MAGIC_FW …
#define VSC_MAGIC_FILE …

#define VSC_ADDR_BASE …
#define VSC_EFUSE_ADDR …
#define VSC_STRAP_ADDR …

#define VSC_MAINSTEPPING_VERSION_MASK …
#define VSC_MAINSTEPPING_VERSION_A …

#define VSC_SUBSTEPPING_VERSION_MASK …
#define VSC_SUBSTEPPING_VERSION_0 …
#define VSC_SUBSTEPPING_VERSION_1 …

#define VSC_BOOT_IMG_OPTION_MASK …

#define VSC_SKU_CFG_LOCATION …
#define VSC_SKU_MAX_SIZE …

#define VSC_ACE_IMG_CNT …
#define VSC_CSI_IMG_CNT …
#define VSC_IMG_CNT_MAX …

#define VSC_ROM_PKG_SIZE …
#define VSC_FW_PKG_SIZE …

#define VSC_IMAGE_DIR …

#define VSC_CSI_IMAGE_NAME …
#define VSC_ACE_IMAGE_NAME_FMT …
#define VSC_CFG_IMAGE_NAME_FMT …

#define VSC_IMAGE_PATH_MAX_LEN …

#define VSC_SENSOR_NAME_MAX_LEN …

/* command id */
enum { … };

/* command ack token */
enum { … };

/* image type */
enum { … };

/* image fragments */
enum { … };

struct vsc_rom_cmd { … };

struct vsc_rom_cmd_ack { … };

struct vsc_fw_cmd { … };

struct vsc_img { … };

struct vsc_fw_sign { … };

struct vsc_image_code_data { … };

struct vsc_img_frag { … };

/**
 * struct vsc_fw_loader - represent vsc firmware loader
 * @dev: device used to request firmware
 * @tp: transport layer used with the firmware loader
 * @csi: CSI image
 * @ace: ACE image
 * @cfg: config image
 * @tx_buf: tx buffer
 * @rx_buf: rx buffer
 * @option: command option
 * @count: total image count
 * @sensor_name: camera sensor name
 * @frags: image fragments
 */
struct vsc_fw_loader { … };

static inline u32 vsc_sum_crc(void *data, size_t size)
{ … }

/* get sensor name to construct image name */
static int vsc_get_sensor_name(struct vsc_fw_loader *fw_loader,
			       struct device *dev)
{ … }

static int vsc_identify_silicon(struct vsc_fw_loader *fw_loader)
{ … }

static int vsc_identify_csi_image(struct vsc_fw_loader *fw_loader)
{ … }

static int vsc_identify_ace_image(struct vsc_fw_loader *fw_loader)
{ … }

static int vsc_identify_cfg_image(struct vsc_fw_loader *fw_loader)
{ … }

static int vsc_download_bootloader(struct vsc_fw_loader *fw_loader)
{ … }

static int vsc_download_firmware(struct vsc_fw_loader *fw_loader)
{ … }

/**
 * vsc_tp_init - init vsc_tp
 * @tp: vsc_tp device handle
 * @dev: device node for mei vsc device
 * Return: 0 in case of success, negative value in case of error
 */
int vsc_tp_init(struct vsc_tp *tp, struct device *dev)
{ … }
EXPORT_SYMBOL_NS_GPL(…);