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video: drive: add support to dump FW region

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Add support to dump video FW region during FW crash
using devcoredump helpers.

Change-Id: I64c47160f04644223f4e831c35f7a059d38f7d83
Signed-off-by: Dikshita Agarwal <dikshita@codeaurora.org>
Signed-off-by: Govindaraj Rajagopal <grajagop@codeaurora.org>
This commit is contained in:
Dikshita Agarwal
2021-02-12 11:28:11 +05:30
committed by Mihir Ganu
parent 71bb59790c
commit b08d4769f8
3 changed files with 56 additions and 0 deletions
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1
driver/vidc/inc/msm_vidc_debug.h
View File

@@ -33,6 +33,7 @@ extern unsigned int msm_vidc_debug;
extern bool msm_vidc_lossless_encode; extern bool msm_vidc_lossless_encode;
extern bool msm_vidc_syscache_disable; extern bool msm_vidc_syscache_disable;
extern int msm_vidc_clock_voting; extern int msm_vidc_clock_voting;
extern bool msm_vidc_fw_dump;
/* To enable messages OR these values and /* To enable messages OR these values and
* echo the result to debugfs file. * echo the result to debugfs file.

5
driver/vidc/src/msm_vidc_debug.c
View File

@@ -83,6 +83,9 @@ EXPORT_SYMBOL(msm_vidc_syscache_disable);
int msm_vidc_clock_voting = !1; int msm_vidc_clock_voting = !1;
bool msm_vidc_fw_dump = !true;
EXPORT_SYMBOL(msm_vidc_fw_dump);
#define MAX_DBG_BUF_SIZE 4096 #define MAX_DBG_BUF_SIZE 4096
struct core_inst_pair { struct core_inst_pair {
@@ -244,6 +247,8 @@ struct dentry* msm_vidc_debugfs_init_drv()
&msm_vidc_syscache_disable); &msm_vidc_syscache_disable);
debugfs_create_bool("lossless_encoding", 0644, dir, debugfs_create_bool("lossless_encoding", 0644, dir,
&msm_vidc_lossless_encode); &msm_vidc_lossless_encode);
debugfs_create_bool("msm_vidc_fw_dump", 0644, dir,
&msm_vidc_fw_dump);
return dir; return dir;

50
driver/vidc/src/venus_hfi_response.c
View File

@@ -3,6 +3,8 @@
* Copyright (c) 2020-2021, The Linux Foundation. All rights reserved. * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
*/ */
#include <linux/devcoredump.h>
#include <linux/of_address.h>
#include "hfi_packet.h" #include "hfi_packet.h"
#include "venus_hfi.h" #include "venus_hfi.h"
#include "venus_hfi_response.h" #include "venus_hfi_response.h"
@@ -372,13 +374,61 @@ static int handle_session_error(struct msm_vidc_inst *inst,
return rc; return rc;
} }
static void fw_coredump(struct platform_device *pdev)
{
int rc = 0;
struct device_node *node = NULL;
struct resource res = {0};
phys_addr_t mem_phys = 0;
size_t res_size = 0;
void *mem_va = NULL;
void *data = NULL;
node = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
if (!node) {
d_vpr_e("%s: DT error getting \"memory-region\" property\n",
__func__);
return;
}
rc = of_address_to_resource(node, 0, &res);
if (rc) {
d_vpr_e("%s: error %d while getting \"memory-region\" resource\n",
__func__, rc);
return;
}
mem_phys = res.start;
res_size = (size_t)resource_size(&res);
mem_va = memremap(mem_phys, res_size, MEMREMAP_WC);
if (!mem_va) {
d_vpr_e("%s: unable to remap firmware memory\n", __func__);
return;
}
data = vmalloc(res_size);
if (!data) {
memunmap(mem_va);
return;
}
memcpy(data, mem_va, res_size);
memunmap(mem_va);
dev_coredumpv(&pdev->dev, data, res_size, GFP_KERNEL);
}
int handle_system_error(struct msm_vidc_core *core, int handle_system_error(struct msm_vidc_core *core,
struct hfi_packet *pkt) struct hfi_packet *pkt)
{ {
d_vpr_e("%s: system error received\n", __func__); d_vpr_e("%s: system error received\n", __func__);
print_sfr_message(core); print_sfr_message(core);
venus_hfi_noc_error_info(core); venus_hfi_noc_error_info(core);
msm_vidc_core_deinit(core, true); msm_vidc_core_deinit(core, true);
if (msm_vidc_fw_dump)
fw_coredump(core->pdev);
return 0; return 0;
} }