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drm/msm/a6xx: fix crashstate capture for A650

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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>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
This commit is contained in:
Jonathan Marek 2020-06-29 20:10:06 -04:00 committed by Rob Clark
parent 62a35e81c2
commit 142639a52a
3 changed files with 31 additions and 11 deletions
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5
drivers/gpu/drm/msm/adreno/a6xx_gmu.h
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@ -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));

25
drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
View File

@ -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

12
drivers/gpu/drm/msm/adreno/a6xx_gpu_state.h
View File

@ -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),
};