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media: venus: core: add support to dump FW region 

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

Signed-off-by: Dikshita Agarwal <dikshita@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Dikshita Agarwal 2020-12-15 19:08:36 +01:00 committed by Mauro Carvalho Chehab
parent 0f9774dddf
commit 0ca0ca9805
3 changed files with 35 additions and 0 deletions
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30
drivers/media/platform/qcom/venus/core.c
View File

@ -7,6 +7,7 @@
#include <linux/interconnect.h> #include <linux/interconnect.h>
#include <linux/ioctl.h> #include <linux/ioctl.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/devcoredump.h>
#include <linux/list.h> #include <linux/list.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/of_device.h> #include <linux/of_device.h>
@ -22,6 +23,33 @@
#include "firmware.h" #include "firmware.h"
#include "pm_helpers.h" #include "pm_helpers.h"
static void venus_coredump(struct venus_core *core)
{
struct device *dev;
phys_addr_t mem_phys;
size_t mem_size;
void *mem_va;
void *data;
dev = core->dev;
mem_phys = core->fw.mem_phys;
mem_size = core->fw.mem_size;
mem_va = memremap(mem_phys, mem_size, MEMREMAP_WC);
if (!mem_va)
return;
data = vmalloc(mem_size);
if (!data) {
memunmap(mem_va);
return;
}
memcpy(data, mem_va, mem_size);
memunmap(mem_va);
dev_coredumpv(dev, data, mem_size, GFP_KERNEL);
}
static void venus_event_notify(struct venus_core *core, u32 event) static void venus_event_notify(struct venus_core *core, u32 event)
{ {
struct venus_inst *inst; struct venus_inst *inst;
@ -67,6 +95,8 @@ static void venus_sys_error_handler(struct work_struct *work)
venus_shutdown(core); venus_shutdown(core);
venus_coredump(core);
pm_runtime_put_sync(core->dev); pm_runtime_put_sync(core->dev);
while (core->pmdomains[0] && pm_runtime_active(core->pmdomains[0])) while (core->pmdomains[0] && pm_runtime_active(core->pmdomains[0]))

2
drivers/media/platform/qcom/venus/core.h
View File

@ -144,6 +144,8 @@ struct venus_core {
struct device *dev; struct device *dev;
struct iommu_domain *iommu_domain; struct iommu_domain *iommu_domain;
size_t mapped_mem_size; size_t mapped_mem_size;
phys_addr_t mem_phys;
size_t mem_size;
} fw; } fw;
struct mutex lock; struct mutex lock;
struct list_head instances; struct list_head instances;

3
drivers/media/platform/qcom/venus/firmware.c
View File

@ -201,6 +201,9 @@ int venus_boot(struct venus_core *core)
return -EINVAL; return -EINVAL;
} }
core->fw.mem_size = mem_size;
core->fw.mem_phys = mem_phys;
if (core->use_tz) if (core->use_tz)
ret = qcom_scm_pas_auth_and_reset(VENUS_PAS_ID); ret = qcom_scm_pas_auth_and_reset(VENUS_PAS_ID);
else else