/* SPDX-License-Identifier: ISC */
/*
 * Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
 */

#ifndef _COREDUMP_H_
#define _COREDUMP_H_

#include "core.h"

#define ATH10K_FW_CRASH_DUMP_VERSION 1

/**
 * enum ath10k_fw_crash_dump_type - types of data in the dump file
 * @ATH10K_FW_CRASH_DUMP_REGDUMP: Register crash dump in binary format
 */
enum ath10k_fw_crash_dump_type {
        ATH10K_FW_CRASH_DUMP_REGISTERS = 0,
        ATH10K_FW_CRASH_DUMP_CE_DATA = 1,

        /* contains multiple struct ath10k_dump_ram_data_hdr */
        ATH10K_FW_CRASH_DUMP_RAM_DATA = 2,

        ATH10K_FW_CRASH_DUMP_MAX,
};

struct ath10k_tlv_dump_data {
        /* see ath10k_fw_crash_dump_type above */
        __le32 type;

        /* in bytes */
        __le32 tlv_len;

        /* pad to 32-bit boundaries as needed */
        u8 tlv_data[];
} __packed;

struct ath10k_dump_file_data {
        /* dump file information */

        /* "ATH10K-FW-DUMP" */
        char df_magic[16];

        __le32 len;

        /* file dump version */
        __le32 version;

        /* some info we can get from ath10k struct that might help */

        guid_t guid;

        __le32 chip_id;

        /* 0 for now, in place for later hardware */
        __le32 bus_type;

        __le32 target_version;
        __le32 fw_version_major;
        __le32 fw_version_minor;
        __le32 fw_version_release;
        __le32 fw_version_build;
        __le32 phy_capability;
        __le32 hw_min_tx_power;
        __le32 hw_max_tx_power;
        __le32 ht_cap_info;
        __le32 vht_cap_info;
        __le32 num_rf_chains;

        /* firmware version string */
        char fw_ver[ETHTOOL_FWVERS_LEN];

        /* Kernel related information */

        /* time-of-day stamp */
        __le64 tv_sec;

        /* time-of-day stamp, nano-seconds */
        __le64 tv_nsec;

        /* LINUX_VERSION_CODE */
        __le32 kernel_ver_code;

        /* VERMAGIC_STRING */
        char kernel_ver[64];

        /* room for growth w/out changing binary format */
        u8 unused[128];

        /* struct ath10k_tlv_dump_data + more */
        u8 data[0];
} __packed;

struct ath10k_dump_ram_data_hdr {
        /* enum ath10k_mem_region_type */
        __le32 region_type;

        __le32 start;

        /* length of payload data, not including this header */
        __le32 length;

        u8 data[0];
};

/* magic number to fill the holes not copied due to sections in regions */
#define ATH10K_MAGIC_NOT_COPIED         0xAA

/* part of user space ABI */
enum ath10k_mem_region_type {
        ATH10K_MEM_REGION_TYPE_REG      = 1,
        ATH10K_MEM_REGION_TYPE_DRAM     = 2,
        ATH10K_MEM_REGION_TYPE_AXI      = 3,
        ATH10K_MEM_REGION_TYPE_IRAM1    = 4,
        ATH10K_MEM_REGION_TYPE_IRAM2    = 5,
        ATH10K_MEM_REGION_TYPE_IOSRAM   = 6,
        ATH10K_MEM_REGION_TYPE_IOREG    = 7,
};

/* Define a section of the region which should be copied. As not all parts
 * of the memory is possible to copy, for example some of the registers can
 * be like that, sections can be used to define what is safe to copy.
 *
 * To minimize the size of the array, the list must obey the format:
 * '{start0,stop0},{start1,stop1},{start2,stop2}....' The values below must
 * also obey to 'start0 < stop0 < start1 < stop1 < start2 < ...', otherwise
 * we may encouter error in the dump processing.
 */
struct ath10k_mem_section {
        u32 start;
        u32 end;
};

/* One region of a memory layout. If the sections field is null entire
 * region is copied. If sections is non-null only the areas specified in
 * sections are copied and rest of the areas are filled with
 * ATH10K_MAGIC_NOT_COPIED.
 */
struct ath10k_mem_region {
        enum ath10k_mem_region_type type;
        u32 start;
        u32 len;

        const char *name;

        struct {
                const struct ath10k_mem_section *sections;
                u32 size;
        } section_table;
};

/* Contains the memory layout of a hardware version identified with the
 * hardware id, split into regions.
 */
struct ath10k_hw_mem_layout {
        u32 hw_id;
        u32 hw_rev;

        struct {
                const struct ath10k_mem_region *regions;
                int size;
        } region_table;
};

/* FIXME: where to put this? */
extern unsigned long ath10k_coredump_mask;

#ifdef CONFIG_DEV_COREDUMP

int ath10k_coredump_submit(struct ath10k *ar);
struct ath10k_fw_crash_data *ath10k_coredump_new(struct ath10k *ar);
int ath10k_coredump_create(struct ath10k *ar);
int ath10k_coredump_register(struct ath10k *ar);
void ath10k_coredump_unregister(struct ath10k *ar);
void ath10k_coredump_destroy(struct ath10k *ar);

const struct ath10k_hw_mem_layout *ath10k_coredump_get_mem_layout(struct ath10k *ar);

#else /* CONFIG_DEV_COREDUMP */

static inline int ath10k_coredump_submit(struct ath10k *ar)
{
        return 0;
}

static inline struct ath10k_fw_crash_data *ath10k_coredump_new(struct ath10k *ar)
{
        return NULL;
}

static inline int ath10k_coredump_create(struct ath10k *ar)
{
        return 0;
}

static inline int ath10k_coredump_register(struct ath10k *ar)
{
        return 0;
}

static inline void ath10k_coredump_unregister(struct ath10k *ar)
{
}

static inline void ath10k_coredump_destroy(struct ath10k *ar)
{
}

static inline const struct ath10k_hw_mem_layout *
ath10k_coredump_get_mem_layout(struct ath10k *ar)
{
        return NULL;
}

#endif /* CONFIG_DEV_COREDUMP */

#endif /* _COREDUMP_H_ */