lkml.org 
[lkml]   [2020]   [Jun]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] drm/msm/a6xx: fix crashstate capture for A650
Date
A650 has a separate RSCC region, so dump RSCC registers separately, reading
them from the RSCC base. Without this change a GPU hang will cause a system
reset if CONFIG_DEV_COREDUMP is enabled.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
---
drivers/gpu/drm/msm/adreno/a6xx_gmu.h | 5 +++++
drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 25 +++++++++++++++------
drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h | 12 ++++++----
3 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
index 47df4745db50..c6d2bced8e5d 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.h
@@ -127,6 +127,11 @@ static inline u64 gmu_read64(struct a6xx_gmu *gmu, u32 lo, u32 hi)
readl_poll_timeout((gmu)->mmio + ((addr) << 2), val, cond, \
interval, timeout)

+static inline u32 gmu_read_rscc(struct a6xx_gmu *gmu, u32 offset)
+{
+ return msm_readl(gmu->rscc + (offset << 2));
+}
+
static inline void gmu_write_rscc(struct a6xx_gmu *gmu, u32 offset, u32 value)
{
return msm_writel(value, gmu->rscc + (offset << 2));
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
index d6023ba8033c..959656ad6987 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
@@ -736,7 +736,8 @@ static void a6xx_get_ahb_gpu_registers(struct msm_gpu *gpu,
static void _a6xx_get_gmu_registers(struct msm_gpu *gpu,
struct a6xx_gpu_state *a6xx_state,
const struct a6xx_registers *regs,
- struct a6xx_gpu_state_obj *obj)
+ struct a6xx_gpu_state_obj *obj,
+ bool rscc)
{
struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
@@ -755,9 +756,17 @@ static void _a6xx_get_gmu_registers(struct msm_gpu *gpu,
u32 count = RANGE(regs->registers, i);
int j;

- for (j = 0; j < count; j++)
- obj->data[index++] = gmu_read(gmu,
- regs->registers[i] + j);
+ for (j = 0; j < count; j++) {
+ u32 offset = regs->registers[i] + j;
+ u32 val;
+
+ if (rscc)
+ val = gmu_read_rscc(gmu, offset);
+ else
+ val = gmu_read(gmu, offset);
+
+ obj->data[index++] = val;
+ }
}
}

@@ -777,7 +786,9 @@ static void a6xx_get_gmu_registers(struct msm_gpu *gpu,

/* Get the CX GMU registers from AHB */
_a6xx_get_gmu_registers(gpu, a6xx_state, &a6xx_gmu_reglist[0],
- &a6xx_state->gmu_registers[0]);
+ &a6xx_state->gmu_registers[0], false);
+ _a6xx_get_gmu_registers(gpu, a6xx_state, &a6xx_gmu_reglist[1],
+ &a6xx_state->gmu_registers[1], true);

if (!a6xx_gmu_gx_is_on(&a6xx_gpu->gmu))
return;
@@ -785,8 +796,8 @@ static void a6xx_get_gmu_registers(struct msm_gpu *gpu,
/* Set the fence to ALLOW mode so we can access the registers */
gpu_write(gpu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, 0);

- _a6xx_get_gmu_registers(gpu, a6xx_state, &a6xx_gmu_reglist[1],
- &a6xx_state->gmu_registers[1]);
+ _a6xx_get_gmu_registers(gpu, a6xx_state, &a6xx_gmu_reglist[2],
+ &a6xx_state->gmu_registers[2], false);
}

#define A6XX_GBIF_REGLIST_SIZE 1
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h
index 24c974c293e5..846fd5b54c23 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h
@@ -341,10 +341,6 @@ static const u32 a6xx_gmu_cx_registers[] = {
0x5157, 0x5158, 0x515d, 0x515d, 0x5162, 0x5162, 0x5164, 0x5165,
0x5180, 0x5186, 0x5190, 0x519e, 0x51c0, 0x51c0, 0x51c5, 0x51cc,
0x51e0, 0x51e2, 0x51f0, 0x51f0, 0x5200, 0x5201,
- /* GPU RSCC */
- 0x8c8c, 0x8c8c, 0x8d01, 0x8d02, 0x8f40, 0x8f42, 0x8f44, 0x8f47,
- 0x8f4c, 0x8f87, 0x8fec, 0x8fef, 0x8ff4, 0x902f, 0x9094, 0x9097,
- 0x909c, 0x90d7, 0x913c, 0x913f, 0x9144, 0x917f,
/* GMU AO */
0x9300, 0x9316, 0x9400, 0x9400,
/* GPU CC */
@@ -357,8 +353,16 @@ static const u32 a6xx_gmu_cx_registers[] = {
0xbc00, 0xbc16, 0xbc20, 0xbc27,
};

+static const u32 a6xx_gmu_cx_rscc_registers[] = {
+ /* GPU RSCC */
+ 0x008c, 0x008c, 0x0101, 0x0102, 0x0340, 0x0342, 0x0344, 0x0347,
+ 0x034c, 0x0387, 0x03ec, 0x03ef, 0x03f4, 0x042f, 0x0494, 0x0497,
+ 0x049c, 0x04d7, 0x053c, 0x053f, 0x0544, 0x057f,
+};
+
static const struct a6xx_registers a6xx_gmu_reglist[] = {
REGS(a6xx_gmu_cx_registers, 0, 0),
+ REGS(a6xx_gmu_cx_rscc_registers, 0, 0),
REGS(a6xx_gmu_gx_registers, 0, 0),
};

--
2.26.1
\
 
 \ /
  Last update: 2020-06-30 02:10    [W:0.098 / U:0.552 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site