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author | 2022-06-16 12:02:02 +0100 | |
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committer | 2022-07-07 09:20:15 +0100 | |
commit | 748b080f21678f2988b0da2d2b396a6f928d9b2c (patch) | |
tree | d6d66a1b7fab1f95b98a372a91bb98d231151bed | |
parent | media: isl7998x: select V4L2_FWNODE to fix build error (diff) | |
download | linux-dev-748b080f21678f2988b0da2d2b396a6f928d9b2c.tar.xz linux-dev-748b080f21678f2988b0da2d2b396a6f928d9b2c.zip |
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: 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>
-rw-r--r-- | drivers/media/platform/qcom/venus/core.c | 15 | ||||
-rw-r--r-- | drivers/media/platform/qcom/venus/dbgfs.c | 9 | ||||
-rw-r--r-- | drivers/media/platform/qcom/venus/dbgfs.h | 13 |
3 files changed, 36 insertions, 1 deletions
diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c index 877eca125803..abfa5d699fe2 100644 --- a/drivers/media/platform/qcom/venus/core.c +++ b/drivers/media/platform/qcom/venus/core.c @@ -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) diff --git a/drivers/media/platform/qcom/venus/dbgfs.c b/drivers/media/platform/qcom/venus/dbgfs.c index 52de47f2ca88..726f4b730e69 100644 --- a/drivers/media/platform/qcom/venus/dbgfs.c +++ b/drivers/media/platform/qcom/venus/dbgfs.c @@ -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) diff --git a/drivers/media/platform/qcom/venus/dbgfs.h b/drivers/media/platform/qcom/venus/dbgfs.h index b7b621a8472f..c87c1355d039 100644 --- a/drivers/media/platform/qcom/venus/dbgfs.h +++ b/drivers/media/platform/qcom/venus/dbgfs.h @@ -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); |