Commit 748b080f authored by Dikshita Agarwal's avatar Dikshita Agarwal Committed by Mauro Carvalho Chehab
Browse files

media: venus: Add support for SSR trigger using fault injection 



Here we introduce a new fault injection for SSR trigger.

To trigger the SSR:
 echo 100 >  /sys/kernel/debug/venus/fail_ssr/probability
 echo 1 >  /sys/kernel/debug/venus/fail_ssr/times

Co-developed-by: default avatarStanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: default avatarStanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: default avatarDikshita Agarwal <quic_dikshita@quicinc.com>
Reviewed-by: default avatarStephen Boyd <swboyd@chromium.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
parent 81e00584

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

+14 −1
Original line number Diff line number Diff line
@@ -265,6 +265,19 @@ static void venus_assign_register_offsets(struct venus_core *core) 
	}

}



static irqreturn_t venus_isr_thread(int irq, void *dev_id)

{

	struct venus_core *core = dev_id;

	irqreturn_t ret;



	ret = hfi_isr_thread(irq, dev_id);



	if (ret == IRQ_HANDLED && venus_fault_inject_ssr())

		hfi_core_trigger_ssr(core, HFI_TEST_SSR_SW_ERR_FATAL);



	return ret;

}



static int venus_probe(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;
@@ -320,7 +333,7 @@ static int venus_probe(struct platform_device *pdev) 
	INIT_DELAYED_WORK(&core->work, venus_sys_error_handler);

	init_waitqueue_head(&core->sys_err_done);



	ret = devm_request_threaded_irq(dev, core->irq, hfi_isr, hfi_isr_thread,

	ret = devm_request_threaded_irq(dev, core->irq, hfi_isr, venus_isr_thread,

					IRQF_TRIGGER_HIGH | IRQF_ONESHOT,

					"venus", core);

	if (ret)

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

+9 −0
Original line number Diff line number Diff line
@@ -4,13 +4,22 @@ 
 */



#include <linux/debugfs.h>

#include <linux/fault-inject.h>



#include "core.h"



#ifdef CONFIG_FAULT_INJECTION

DECLARE_FAULT_ATTR(venus_ssr_attr);

#endif



void venus_dbgfs_init(struct venus_core *core)

{

	core->root = debugfs_create_dir("venus", NULL);

	debugfs_create_x32("fw_level", 0644, core->root, &venus_fw_debug);



#ifdef CONFIG_FAULT_INJECTION

	fault_create_debugfs_attr("fail_ssr", core->root, &venus_ssr_attr);

#endif

}



void venus_dbgfs_deinit(struct venus_core *core)

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

+13 −0
Original line number Diff line number Diff line
@@ -4,8 +4,21 @@ 
#ifndef __VENUS_DBGFS_H__

#define __VENUS_DBGFS_H__



#include <linux/fault-inject.h>



struct venus_core;



#ifdef CONFIG_FAULT_INJECTION

extern struct fault_attr venus_ssr_attr;

static inline bool venus_fault_inject_ssr(void)

{

	return should_fail(&venus_ssr_attr, 1);

}

#else

static inline bool venus_fault_inject_ssr(void) { return false; }

#endif





void venus_dbgfs_init(struct venus_core *core);

void venus_dbgfs_deinit(struct venus_core *core);