[PATCH v2 5/6] drm/msm: Add a module param to force coredump
Akhil P Oommen
akhilpo at codeaurora.org
Tue Nov 23 21:17:54 UTC 2021
Add a module param "force_gpu_coredump" to force coredump on relatively
harmless gpu hw errors.
Signed-off-by: Akhil P Oommen <akhilpo at codeaurora.org>
---
(no changes since v1)
drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 33 ++++++++++++++++++--------
drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 38 +++++++++++++++++++++---------
drivers/gpu/drm/msm/adreno/adreno_device.c | 4 ++++
3 files changed, 54 insertions(+), 21 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
index 5e2750e..1861e9a 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
@@ -14,6 +14,7 @@
#include "a5xx_gpu.h"
extern bool hang_debug;
+extern bool force_gpu_coredump;
static void a5xx_dump(struct msm_gpu *gpu);
#define GPU_PAS_ID 13
@@ -1237,11 +1238,6 @@ static void a5xx_fault_detect_irq(struct msm_gpu *gpu)
gpu_read(gpu, REG_A5XX_CP_IB1_BUFSZ),
gpu_read64(gpu, REG_A5XX_CP_IB2_BASE, REG_A5XX_CP_IB2_BASE_HI),
gpu_read(gpu, REG_A5XX_CP_IB2_BUFSZ));
-
- /* Turn off the hangcheck timer to keep it from bothering us */
- del_timer(&gpu->hangcheck_timer);
-
- kthread_queue_work(gpu->worker, &gpu->recover_work);
}
#define RBBM_ERROR_MASK \
@@ -1255,6 +1251,7 @@ static void a5xx_fault_detect_irq(struct msm_gpu *gpu)
static irqreturn_t a5xx_irq(struct msm_gpu *gpu)
{
u32 status = gpu_read(gpu, REG_A5XX_RBBM_INT_0_STATUS);
+ bool coredump = false;
/*
* Clear all the interrupts except RBBM_AHB_ERROR - if we clear it
@@ -1264,20 +1261,30 @@ static irqreturn_t a5xx_irq(struct msm_gpu *gpu)
status & ~A5XX_RBBM_INT_0_MASK_RBBM_AHB_ERROR);
/* Pass status to a5xx_rbbm_err_irq because we've already cleared it */
- if (status & RBBM_ERROR_MASK)
+ if (status & RBBM_ERROR_MASK) {
a5xx_rbbm_err_irq(gpu, status);
+ coredump |= force_gpu_coredump;
+ }
- if (status & A5XX_RBBM_INT_0_MASK_CP_HW_ERROR)
+ if (status & A5XX_RBBM_INT_0_MASK_CP_HW_ERROR) {
a5xx_cp_err_irq(gpu);
+ coredump |= force_gpu_coredump;
+ }
- if (status & A5XX_RBBM_INT_0_MASK_MISC_HANG_DETECT)
+ if (status & A5XX_RBBM_INT_0_MASK_MISC_HANG_DETECT) {
a5xx_fault_detect_irq(gpu);
+ coredump = true;
+ }
- if (status & A5XX_RBBM_INT_0_MASK_UCHE_OOB_ACCESS)
+ if (status & A5XX_RBBM_INT_0_MASK_UCHE_OOB_ACCESS) {
a5xx_uche_err_irq(gpu);
+ coredump |= force_gpu_coredump;
+ }
- if (status & A5XX_RBBM_INT_0_MASK_GPMU_VOLTAGE_DROOP)
+ if (status & A5XX_RBBM_INT_0_MASK_GPMU_VOLTAGE_DROOP) {
a5xx_gpmu_err_irq(gpu);
+ coredump |= force_gpu_coredump;
+ }
if (status & A5XX_RBBM_INT_0_MASK_CP_CACHE_FLUSH_TS) {
a5xx_preempt_trigger(gpu);
@@ -1287,6 +1294,12 @@ static irqreturn_t a5xx_irq(struct msm_gpu *gpu)
if (status & A5XX_RBBM_INT_0_MASK_CP_SW)
a5xx_preempt_irq(gpu);
+ if (coredump) {
+ /* Turn off the hangcheck timer to keep it from bothering us */
+ del_timer(&gpu->hangcheck_timer);
+ kthread_queue_work(gpu->worker, &gpu->recover_work);
+ }
+
return IRQ_HANDLED;
}
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 6c2edce..f96587f 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -15,6 +15,8 @@
#define GPU_PAS_ID 13
+extern bool force_gpu_coredump;
+
static inline bool _a6xx_check_idle(struct msm_gpu *gpu)
{
struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
@@ -1354,40 +1356,54 @@ static void a6xx_fault_detect_irq(struct msm_gpu *gpu)
gpu_read(gpu, REG_A6XX_CP_IB1_REM_SIZE),
gpu_read64(gpu, REG_A6XX_CP_IB2_BASE, REG_A6XX_CP_IB2_BASE_HI),
gpu_read(gpu, REG_A6XX_CP_IB2_REM_SIZE));
-
- /* Turn off the hangcheck timer to keep it from bothering us */
- del_timer(&gpu->hangcheck_timer);
-
- kthread_queue_work(gpu->worker, &gpu->recover_work);
}
static irqreturn_t a6xx_irq(struct msm_gpu *gpu)
{
u32 status = gpu_read(gpu, REG_A6XX_RBBM_INT_0_STATUS);
+ bool coredump = false;
gpu_write(gpu, REG_A6XX_RBBM_INT_CLEAR_CMD, status);
- if (status & A6XX_RBBM_INT_0_MASK_RBBM_HANG_DETECT)
+ if (status & A6XX_RBBM_INT_0_MASK_RBBM_HANG_DETECT) {
a6xx_fault_detect_irq(gpu);
+ coredump = true;
+ }
- if (status & A6XX_RBBM_INT_0_MASK_CP_AHB_ERROR)
+ if (status & A6XX_RBBM_INT_0_MASK_CP_AHB_ERROR) {
dev_err_ratelimited(&gpu->pdev->dev, "CP | AHB bus error\n");
+ coredump |= force_gpu_coredump;
+ }
- if (status & A6XX_RBBM_INT_0_MASK_CP_HW_ERROR)
+ if (status & A6XX_RBBM_INT_0_MASK_CP_HW_ERROR) {
a6xx_cp_hw_err_irq(gpu);
+ coredump |= force_gpu_coredump;
+ }
- if (status & A6XX_RBBM_INT_0_MASK_RBBM_ATB_ASYNCFIFO_OVERFLOW)
+ if (status & A6XX_RBBM_INT_0_MASK_RBBM_ATB_ASYNCFIFO_OVERFLOW) {
dev_err_ratelimited(&gpu->pdev->dev, "RBBM | ATB ASYNC overflow\n");
+ coredump |= force_gpu_coredump;
+ }
- if (status & A6XX_RBBM_INT_0_MASK_RBBM_ATB_BUS_OVERFLOW)
+ if (status & A6XX_RBBM_INT_0_MASK_RBBM_ATB_BUS_OVERFLOW) {
dev_err_ratelimited(&gpu->pdev->dev, "RBBM | ATB bus overflow\n");
+ coredump |= force_gpu_coredump;
+ }
- if (status & A6XX_RBBM_INT_0_MASK_UCHE_OOB_ACCESS)
+ if (status & A6XX_RBBM_INT_0_MASK_UCHE_OOB_ACCESS) {
dev_err_ratelimited(&gpu->pdev->dev, "UCHE | Out of bounds access\n");
+ coredump |= force_gpu_coredump;
+ }
if (status & A6XX_RBBM_INT_0_MASK_CP_CACHE_FLUSH_TS)
msm_gpu_retire(gpu);
+ if (coredump) {
+ /* Turn off the hangcheck timer to keep it from bothering us */
+ del_timer(&gpu->hangcheck_timer);
+ kthread_queue_work(gpu->worker, &gpu->recover_work);
+ }
+
return IRQ_HANDLED;
}
diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
index 2a6ce76..a159cb9 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_device.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
@@ -20,6 +20,10 @@ bool allow_vram_carveout = false;
MODULE_PARM_DESC(allow_vram_carveout, "Allow using VRAM Carveout, in place of IOMMU");
module_param_named(allow_vram_carveout, allow_vram_carveout, bool, 0600);
+bool force_gpu_coredump = false;
+MODULE_PARM_DESC(snapshot_debugbus, "Force gpu coredump on hw errors which are usually harmless");
+module_param_named(force_gpu_coredump, force_gpu_coredump, bool, 0600);
+
static const struct adreno_info gpulist[] = {
{
.rev = ADRENO_REV(2, 0, 0, 0),
--
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