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

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[ Upstream commit 748b080f21678f2988b0da2d2b396a6f928d9b2c ]

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: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Dikshita Agarwal <quic_dikshita@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Stable-dep-of: 3200144a2fa4 ("media: venus: protect against spurious interrupts during probe")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dikshita Agarwal
2025-08-22 23:54:47 -04:00
committed by Greg Kroah-Hartman
parent e2624d8e78
commit 54601b830b
3 changed files with 36 additions and 1 deletions
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15
drivers/media/platform/qcom/venus/core.c
View File

@@ -220,6 +220,19 @@ static void venus_assign_register_offsets(struct venus_core *core)
core->wrapper_base = core->base + WRAPPER_BASE;
}
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;
@@ -276,7 +289,7 @@ static int venus_probe(struct platform_device *pdev)
mutex_init(&core->lock);
INIT_DELAYED_WORK(&core->work, venus_sys_error_handler);
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)

9
drivers/media/platform/qcom/venus/dbgfs.c
View File

@@ -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)

13
drivers/media/platform/qcom/venus/dbgfs.h
View File

@@ -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);