Commit 0ca0ca98 authored by Dikshita Agarwal's avatar Dikshita Agarwal Committed by Mauro Carvalho Chehab
Browse files

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: default avatarDikshita Agarwal <dikshita@codeaurora.org>
Reviewed-by: default avatarStephen Boyd <swboyd@chromium.org>
Signed-off-by: default avatarStanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent 0f9774dd

drivers/media/platform/qcom/venus/core.c

+30 −0
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
#include <linux/interconnect.h>

#include <linux/ioctl.h>

#include <linux/delay.h>

#include <linux/devcoredump.h>

#include <linux/list.h>

#include <linux/module.h>

#include <linux/of_device.h>
@@ -22,6 +23,33 @@ 
#include "firmware.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)

{

	struct venus_inst *inst;
@@ -67,6 +95,8 @@ static void venus_sys_error_handler(struct work_struct *work) 


	venus_shutdown(core);



	venus_coredump(core);



	pm_runtime_put_sync(core->dev);



	while (core->pmdomains[0] && pm_runtime_active(core->pmdomains[0]))

drivers/media/platform/qcom/venus/core.h

+2 −0
Original line number Diff line number Diff line
@@ -144,6 +144,8 @@ struct venus_core { 
		struct device *dev;

		struct iommu_domain *iommu_domain;

		size_t mapped_mem_size;

		phys_addr_t mem_phys;

		size_t mem_size;

	} fw;

	struct mutex lock;

	struct list_head instances;

drivers/media/platform/qcom/venus/firmware.c

+3 −0
Original line number Diff line number Diff line
@@ -201,6 +201,9 @@ int venus_boot(struct venus_core *core) 
		return -EINVAL;

	}



	core->fw.mem_size = mem_size;

	core->fw.mem_phys = mem_phys;



	if (core->use_tz)

		ret = qcom_scm_pas_auth_and_reset(VENUS_PAS_ID);

	else