// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2020-2021 Intel Corporation.
*/
#include <linux/vmalloc.h>
#include "iosm_ipc_chnl_cfg.h"
#include "iosm_ipc_coredump.h"
#include "iosm_ipc_devlink.h"
#include "iosm_ipc_flash.h"
/* Coredump list */
static struct iosm_coredump_file_info list[IOSM_NOF_CD_REGION] = {
{"report.json", REPORT_JSON_SIZE,},
{"coredump.fcd", COREDUMP_FCD_SIZE,},
{"cdd.log", CDD_LOG_SIZE,},
{"eeprom.bin", EEPROM_BIN_SIZE,},
{"bootcore_trace.bin", BOOTCORE_TRC_BIN_SIZE,},
{"bootcore_prev_trace.bin", BOOTCORE_PREV_TRC_BIN_SIZE,},
};
/* Get the param values for the specific param ID's */
static int ipc_devlink_get_param(struct devlink *dl, u32 id,
struct devlink_param_gset_ctx *ctx)
{
struct iosm_devlink *ipc_devlink = devlink_priv(dl);
if (id == IOSM_DEVLINK_PARAM_ID_ERASE_FULL_FLASH)
ctx->val.vu8 = ipc_devlink->param.erase_full_flash;
return 0;
}
/* Set the param values for the specific param ID's */
static int ipc_devlink_set_param(struct devlink *dl, u32 id,
struct devlink_param_gset_ctx *ctx,
struct netlink_ext_ack *extack)
{
struct iosm_devlink *ipc_devlink = devlink_priv(dl);
if (id == IOSM_DEVLINK_PARAM_ID_ERASE_FULL_FLASH)
ipc_devlink->param.erase_full_flash = ctx->val.vu8;
return 0;
}
/* Devlink param structure array */
static const struct devlink_param iosm_devlink_params[] = {
DEVLINK_PARAM_DRIVER(IOSM_DEVLINK_PARAM_ID_ERASE_FULL_FLASH,
"erase_full_flash", DEVLINK_PARAM_TYPE_BOOL,
BIT(DEVLINK_PARAM_CMODE_RUNTIME),
ipc_devlink_get_param, ipc_devlink_set_param,
NULL),
};
/* Get devlink flash component type */
static enum iosm_flash_comp_type
ipc_devlink_get_flash_comp_type(const char comp_str[], u32 len)
{
enum iosm_flash_comp_type fls_type;
if (!strncmp("PSI", comp_str, len))
fls_type = FLASH_COMP_TYPE_PSI;
else if (!strncmp("EBL", comp_str, len))
fls_type = FLASH_COMP_TYPE_EBL;
else if (!strncmp("FLS", comp_str, len))
fls_type = FLASH_COMP_TYPE_FLS;
else
fls_type = FLASH_COMP_TYPE_INVAL;
return fls_type;
}
/* Function triggered on devlink flash command
* Flash update function which calls multiple functions based on
* component type specified in the flash command
*/
static int ipc_devlink_flash_update(struct devlink *devlink,
struct devlink_flash_update_params *params,
struct netlink_ext_ack *extack)
{
struct iosm_devlink *ipc_devlink = devlink_priv(devlink);
enum iosm_flash_comp_type fls_type;
struct iosm_devlink_image *header;
int rc = -EINVAL;
u8 *mdm_rsp;
header = (struct iosm_devlink_image *)params->fw->data;
if (!header || params->fw->size <= IOSM_DEVLINK_HDR_SIZE ||
(memcmp(header->magic_header, IOSM_DEVLINK_MAGIC_HEADER,
IOSM_DEVLINK_MAGIC_HEADER_LEN) != 0))
return -EINVAL;
mdm_rsp = kzalloc(IOSM_EBL_DW_PACK_SIZE, GFP_KERNEL);
if (!mdm_rsp)
return -ENOMEM;
fls_type = ipc_devlink_get_flash_comp_type(header->image_type,
IOSM_DEVLINK_MAX_IMG_LEN);
switch (fls_type) {
case FLASH_COMP_TYPE_PSI:
rc = ipc_flash_boot_psi(ipc_devlink, params->fw);
break;
case FLASH_COMP_TYPE_EBL:
rc = ipc_flash_boot_ebl(ipc_devlink, params->fw);
if (rc)
break;
rc = ipc_flash_boot_set_capabilities(ipc_devlink, mdm_rsp);
if (rc)
break;
rc = ipc_flash_read_swid(ipc_devlink, mdm_rsp);
break;
case FLASH_COMP_TYPE_FLS:
rc = ipc_flash_send_fls(ipc_devlink, params->fw, mdm_rsp);
break;
default:
devlink_flash_update_status_notify(devlink, "Invalid component",
NULL, 0, 0);
break;
}
if (!rc)
devlink_flash_update_status_notify(devlink, "Flashing success",
header->image_type, 0, 0);
else
devlink_flash_update_status_notify(devlink, "Flashing failed",
header->image_type, 0, 0);
kfree(mdm_rsp);
return rc;
}
/* Call back function for devlink ops */
static const struct devlink_ops devlink_flash_ops = {
.flash_update = ipc_devlink_flash_update,
};
/**
* ipc_devlink_send_cmd - Send command to Modem
* @ipc_devlink: Pointer to struct iosm_devlink
* @cmd: Command to be sent to modem
* @entry: Command entry number
*
* Returns: 0 on success and failure value on error
*/
int ipc_devlink_send_cmd(struct iosm_devlink *ipc_devlink, u16 cmd, u32 entry)
{
struct iosm_rpsi_cmd rpsi_cmd;
rpsi_cmd.param.dword = cpu_to_le32(entry);
rpsi_cmd.cmd = cpu_to_le16(cmd);
rpsi_cmd.crc = rpsi_cmd.param.word[0] ^ rpsi_cmd.param.word[1] ^
rpsi_cmd.cmd;
return ipc_imem_sys_devlink_write(ipc_devlink, (u8 *)&rpsi_cmd,
sizeof(rpsi_cmd));
}
/* Function to create snapshot */
static int ipc_devlink_coredump_snapshot(struct devlink *dl,
const struct devlink_region_ops *ops,
struct netlink_ext_ack *extack,
u8 **data)
{
struct iosm_devlink *ipc_devlink = devlink_priv(dl);
struct iosm_coredump_file_info *cd_list = ops->priv;
u32 region_size;
int rc;
dev_dbg(ipc_devlink->dev, "Region:%s, ID:%d", ops->name,
cd_list->entry);
region_size = cd_list->default_size;
rc = ipc_coredump_collect(ipc_devlink, data, cd_list->entry,
region_size);
if (rc) {
dev_err(ipc_devlink->dev, "Fail to create snapshot,err %d", rc);
goto coredump_collect_err;
}
/* Send coredump end cmd indicating end of coredump collection */
if (cd_list->entry == (IOSM_NOF_CD_REGION - 1))
ipc_coredump_get_list(ipc_devlink, rpsi_cmd_coredump_end);
return 0;
coredump_collect_err:
ipc_coredump_get_list(ipc_devlink, rpsi_cmd_coredump_end);
return rc;
}
/* To create regions for coredump files */
static int ipc_devlink_create_region(struct iosm_devlink *devlink)
{
struct devlink_region_ops *mdm_coredump;
int rc = 0;
int i;
mdm_coredump = devlink->iosm_devlink_mdm_coredump;
for (i = 0; i < IOSM_NOF_CD_REGION; i++) {
mdm_coredump[i].name = list[i].filename;
mdm_coredump[i].snapshot = ipc_devlink_coredump_snapshot;
mdm_coredump[i].destructor = vfree;
devlink->cd_regions[i] =
devlink_region_create(devlink->devlink_ctx,
&mdm_coredump[i], MAX_SNAPSHOTS,
list[i].default_size);
if (IS_ERR(devlink->cd_regions[i])) {
rc = PTR_ERR(devlink->cd_regions[i]);
dev_err(devlink->dev, "Devlink region fail,err %d", rc);
/* Delete previously created regions */
for (i--; i >= 0; i--)
devlink_region_destroy(devlink->cd_regions[i]);
goto region_create_fail;
}
list[i].entry = i;
mdm_coredump[i].priv = list + i;
}
region_create_fail:
return rc;
}
/* To Destroy devlink regions */
static void ipc_devlink_destroy_region(struct iosm_devlink *ipc_devlink)
{
u8 i;
for (i = 0; i < IOSM_NOF_CD_REGION; i++)
devlink_region_destroy(ipc_devlink->cd_regions[i]);
}
/**
* ipc_devlink_init - Initialize/register devlink to IOSM driver
* @ipc_imem: Pointer to struct iosm_imem
*
* Returns: Pointer to iosm_devlink on success and NULL on failure
*/
struct iosm_devlink *ipc_devlink_init(struct iosm_imem *ipc_imem)
{
struct ipc_chnl_cfg chnl_cfg_flash = { 0 };
struct iosm_devlink *ipc_devlink;
struct devlink *devlink_ctx;
int rc;
devlink_ctx = devlink_alloc(&devlink_flash_ops,
sizeof(struct iosm_devlink),
ipc_imem->dev);
if (!devlink_ctx) {
dev_err(ipc_imem->dev, "devlink_alloc failed");
goto devlink_alloc_fail;
}
ipc_devlink = devlink_priv(devlink_ctx);
ipc_devlink->devlink_ctx = devlink_ctx;
ipc_devlink->pcie = ipc_imem->pcie;
ipc_devlink->dev = ipc_imem->dev;
rc = devlink_params_register(devlink_ctx, iosm_devlink_params,
ARRAY_SIZE(iosm_devlink_params));
if (rc) {
dev_err(ipc_devlink->dev,
"devlink_params_register failed. rc %d", rc);
goto param_reg_fail;
}
ipc_devlink->cd_file_info = list;
rc = ipc_devlink_create_region(ipc_devlink);
if (rc) {
dev_err(ipc_devlink->dev, "Devlink Region create failed, rc %d",
rc);
goto region_create_fail;
}
if (ipc_chnl_cfg_get(&chnl_cfg_flash, IPC_MEM_CTRL_CHL_ID_7) < 0)
goto chnl_get_fail;
ipc_imem_channel_init(ipc_imem, IPC_CTYPE_CTRL,
chnl_cfg_flash, IRQ_MOD_OFF);
init_completion(&ipc_devlink->devlink_sio.read_sem);
skb_queue_head_init(&ipc_devlink->devlink_sio.rx_list);
devlink_register(devlink_ctx);
dev_dbg(ipc_devlink->dev, "iosm devlink register success");
return ipc_devlink;
chnl_get_fail:
ipc_devlink_destroy_region(ipc_devlink);
region_create_fail:
devlink_params_unregister(devlink_ctx, iosm_devlink_params,
ARRAY_SIZE(iosm_devlink_params));
param_reg_fail:
devlink_free(devlink_ctx);
devlink_alloc_fail:
return NULL;
}
/**
* ipc_devlink_deinit - To unintialize the devlink from IOSM driver.
* @ipc_devlink: Devlink instance
*/
void ipc_devlink_deinit(struct iosm_devlink *ipc_devlink)
{
struct devlink *devlink_ctx = ipc_devlink->devlink_ctx;
devlink_unregister(devlink_ctx);
ipc_devlink_destroy_region(ipc_devlink);
devlink_params_unregister(devlink_ctx, iosm_devlink_params,
ARRAY_SIZE(iosm_devlink_params));
if (ipc_devlink->devlink_sio.devlink_read_pend) {
complete(&ipc_devlink->devlink_sio.read_sem);
complete(&ipc_devlink->devlink_sio.channel->ul_sem);
}
if (!ipc_devlink->devlink_sio.devlink_read_pend)
skb_queue_purge(&ipc_devlink->devlink_sio.rx_list);
ipc_imem_sys_devlink_close(ipc_devlink);
devlink_free(devlink_ctx);
}
Codebase Browser
linux