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Subject[PATCH 2/2] drm/msm/a6xx: add A640/A650 hwcg
Date
Initialize hardware clock-gating registers on A640 and A650 GPUs.

At least for A650, this solves some performance issues.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
---
drivers/gpu/drm/msm/adreno/a6xx.xml.h | 8 ++
drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 11 ++-
drivers/gpu/drm/msm/adreno/adreno_device.c | 108 +++++++++++++++++++++
3 files changed, 124 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx.xml.h b/drivers/gpu/drm/msm/adreno/a6xx.xml.h
index 47840b73cdda..f0498faf7d0b 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx.xml.h
+++ b/drivers/gpu/drm/msm/adreno/a6xx.xml.h
@@ -1996,6 +1996,14 @@ static inline uint32_t A6XX_CP_PROTECT_REG_MASK_LEN(uint32_t val)

#define REG_A6XX_RBBM_CLOCK_DELAY_HLSQ 0x0000011c

+#define REG_A6XX_RBBM_CLOCK_HYST_HLSQ 0x0000011d
+
+#define REG_A6XX_RBBM_CLOCK_CNTL_TEX_FCHE 0x00000120
+
+#define REG_A6XX_RBBM_CLOCK_DELAY_TEX_FCHE 0x00000121
+
+#define REG_A6XX_RBBM_CLOCK_HYST_TEX_FCHE 0x00000122
+
#define REG_A6XX_DBGC_CFG_DBGBUS_SEL_A 0x00000600

#define REG_A6XX_DBGC_CFG_DBGBUS_SEL_B 0x00000601
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 6cd79166a94e..891a21c5225e 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -157,15 +157,20 @@ static void a6xx_set_hwcg(struct msm_gpu *gpu, bool state)
struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
unsigned int i;
- u32 val;
+ u32 val, clock_cntl_on;

if (!adreno_gpu->info->hwcg)
return;

+ if (adreno_is_a630(adreno_gpu))
+ clock_cntl_on = 0x8aa8aa02;
+ else
+ clock_cntl_on = 0x8aa8aa82;
+
val = gpu_read(gpu, REG_A6XX_RBBM_CLOCK_CNTL);

/* Don't re-program the registers if they are already correct */
- if ((!state && !val) || (state && (val == 0x8aa8aa02)))
+ if ((!state && !val) || (state && (val == clock_cntl_on)))
return;

/* Disable SP clock before programming HWCG registers */
@@ -179,7 +184,7 @@ static void a6xx_set_hwcg(struct msm_gpu *gpu, bool state)
/* Enable SP clock */
gmu_rmw(gmu, REG_A6XX_GPU_GMU_GX_SPTPRAC_CLOCK_CONTROL, 0, 1);

- gpu_write(gpu, REG_A6XX_RBBM_CLOCK_CNTL, state ? 0x8aa8aa02 : 0);
+ gpu_write(gpu, REG_A6XX_RBBM_CLOCK_CNTL, state ? clock_cntl_on : 0);
}

static void a6xx_set_ubwc_config(struct msm_gpu *gpu)
diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
index f5f40bc3c113..b3149ff7fa9d 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_device.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
@@ -123,6 +123,110 @@ static const struct adreno_reglist a630_hwcg[] = {
{REG_A6XX_RBBM_CLOCK_HYST_GMU_GX, 0x00000555}
};

+static const struct adreno_reglist a640_hwcg[] = {
+ {REG_A6XX_RBBM_CLOCK_CNTL_SP0, 0x02222222},
+ {REG_A6XX_RBBM_CLOCK_CNTL2_SP0, 0x02222220},
+ {REG_A6XX_RBBM_CLOCK_DELAY_SP0, 0x00000080},
+ {REG_A6XX_RBBM_CLOCK_HYST_SP0, 0x0000F3CF},
+ {REG_A6XX_RBBM_CLOCK_CNTL_TP0, 0x02222222},
+ {REG_A6XX_RBBM_CLOCK_CNTL2_TP0, 0x22222222},
+ {REG_A6XX_RBBM_CLOCK_CNTL3_TP0, 0x22222222},
+ {REG_A6XX_RBBM_CLOCK_CNTL4_TP0, 0x00022222},
+ {REG_A6XX_RBBM_CLOCK_DELAY_TP0, 0x11111111},
+ {REG_A6XX_RBBM_CLOCK_DELAY2_TP0, 0x11111111},
+ {REG_A6XX_RBBM_CLOCK_DELAY3_TP0, 0x11111111},
+ {REG_A6XX_RBBM_CLOCK_DELAY4_TP0, 0x00011111},
+ {REG_A6XX_RBBM_CLOCK_HYST_TP0, 0x77777777},
+ {REG_A6XX_RBBM_CLOCK_HYST2_TP0, 0x77777777},
+ {REG_A6XX_RBBM_CLOCK_HYST3_TP0, 0x77777777},
+ {REG_A6XX_RBBM_CLOCK_HYST4_TP0, 0x00077777},
+ {REG_A6XX_RBBM_CLOCK_CNTL_RB0, 0x22222222},
+ {REG_A6XX_RBBM_CLOCK_CNTL2_RB0, 0x01002222},
+ {REG_A6XX_RBBM_CLOCK_CNTL_CCU0, 0x00002220},
+ {REG_A6XX_RBBM_CLOCK_HYST_RB_CCU0, 0x00040F00},
+ {REG_A6XX_RBBM_CLOCK_CNTL_RAC, 0x05222022},
+ {REG_A6XX_RBBM_CLOCK_CNTL2_RAC, 0x00005555},
+ {REG_A6XX_RBBM_CLOCK_DELAY_RAC, 0x00000011},
+ {REG_A6XX_RBBM_CLOCK_HYST_RAC, 0x00445044},
+ {REG_A6XX_RBBM_CLOCK_CNTL_TSE_RAS_RBBM, 0x04222222},
+ {REG_A6XX_RBBM_CLOCK_MODE_VFD, 0x00002222},
+ {REG_A6XX_RBBM_CLOCK_MODE_GPC, 0x00222222},
+ {REG_A6XX_RBBM_CLOCK_DELAY_HLSQ_2, 0x00000002},
+ {REG_A6XX_RBBM_CLOCK_MODE_HLSQ, 0x00002222},
+ {REG_A6XX_RBBM_CLOCK_DELAY_TSE_RAS_RBBM, 0x00004000},
+ {REG_A6XX_RBBM_CLOCK_DELAY_VFD, 0x00002222},
+ {REG_A6XX_RBBM_CLOCK_DELAY_GPC, 0x00000200},
+ {REG_A6XX_RBBM_CLOCK_DELAY_HLSQ, 0x00000000},
+ {REG_A6XX_RBBM_CLOCK_HYST_TSE_RAS_RBBM, 0x00000000},
+ {REG_A6XX_RBBM_CLOCK_HYST_VFD, 0x00000000},
+ {REG_A6XX_RBBM_CLOCK_HYST_GPC, 0x04104004},
+ {REG_A6XX_RBBM_CLOCK_HYST_HLSQ, 0x00000000},
+ {REG_A6XX_RBBM_CLOCK_CNTL_TEX_FCHE, 0x00000222},
+ {REG_A6XX_RBBM_CLOCK_DELAY_TEX_FCHE, 0x00000111},
+ {REG_A6XX_RBBM_CLOCK_HYST_TEX_FCHE, 0x00000000},
+ {REG_A6XX_RBBM_CLOCK_CNTL_UCHE, 0x22222222},
+ {REG_A6XX_RBBM_CLOCK_HYST_UCHE, 0x00000004},
+ {REG_A6XX_RBBM_CLOCK_DELAY_UCHE, 0x00000002},
+ {REG_A6XX_RBBM_ISDB_CNT, 0x00000182},
+ {REG_A6XX_RBBM_RAC_THRESHOLD_CNT, 0x00000000},
+ {REG_A6XX_RBBM_SP_HYST_CNT, 0x00000000},
+ {REG_A6XX_RBBM_CLOCK_CNTL_GMU_GX, 0x00000222},
+ {REG_A6XX_RBBM_CLOCK_DELAY_GMU_GX, 0x00000111},
+ {REG_A6XX_RBBM_CLOCK_HYST_GMU_GX, 0x00000555},
+};
+
+static const struct adreno_reglist a650_hwcg[] = {
+ {REG_A6XX_RBBM_CLOCK_CNTL_SP0, 0x02222222},
+ {REG_A6XX_RBBM_CLOCK_CNTL2_SP0, 0x02222220},
+ {REG_A6XX_RBBM_CLOCK_DELAY_SP0, 0x00000080},
+ {REG_A6XX_RBBM_CLOCK_HYST_SP0, 0x0000F3CF},
+ {REG_A6XX_RBBM_CLOCK_CNTL_TP0, 0x02222222},
+ {REG_A6XX_RBBM_CLOCK_CNTL2_TP0, 0x22222222},
+ {REG_A6XX_RBBM_CLOCK_CNTL3_TP0, 0x22222222},
+ {REG_A6XX_RBBM_CLOCK_CNTL4_TP0, 0x00022222},
+ {REG_A6XX_RBBM_CLOCK_DELAY_TP0, 0x11111111},
+ {REG_A6XX_RBBM_CLOCK_DELAY2_TP0, 0x11111111},
+ {REG_A6XX_RBBM_CLOCK_DELAY3_TP0, 0x11111111},
+ {REG_A6XX_RBBM_CLOCK_DELAY4_TP0, 0x00011111},
+ {REG_A6XX_RBBM_CLOCK_HYST_TP0, 0x77777777},
+ {REG_A6XX_RBBM_CLOCK_HYST2_TP0, 0x77777777},
+ {REG_A6XX_RBBM_CLOCK_HYST3_TP0, 0x77777777},
+ {REG_A6XX_RBBM_CLOCK_HYST4_TP0, 0x00077777},
+ {REG_A6XX_RBBM_CLOCK_CNTL_RB0, 0x22222222},
+ {REG_A6XX_RBBM_CLOCK_CNTL2_RB0, 0x01002222},
+ {REG_A6XX_RBBM_CLOCK_CNTL_CCU0, 0x00002220},
+ {REG_A6XX_RBBM_CLOCK_HYST_RB_CCU0, 0x00040F00},
+ {REG_A6XX_RBBM_CLOCK_CNTL_RAC, 0x25222022},
+ {REG_A6XX_RBBM_CLOCK_CNTL2_RAC, 0x00005555},
+ {REG_A6XX_RBBM_CLOCK_DELAY_RAC, 0x00000011},
+ {REG_A6XX_RBBM_CLOCK_HYST_RAC, 0x00445044},
+ {REG_A6XX_RBBM_CLOCK_CNTL_TSE_RAS_RBBM, 0x04222222},
+ {REG_A6XX_RBBM_CLOCK_MODE_VFD, 0x00002222},
+ {REG_A6XX_RBBM_CLOCK_MODE_GPC, 0x00222222},
+ {REG_A6XX_RBBM_CLOCK_DELAY_HLSQ_2, 0x00000002},
+ {REG_A6XX_RBBM_CLOCK_MODE_HLSQ, 0x00002222},
+ {REG_A6XX_RBBM_CLOCK_DELAY_TSE_RAS_RBBM, 0x00004000},
+ {REG_A6XX_RBBM_CLOCK_DELAY_VFD, 0x00002222},
+ {REG_A6XX_RBBM_CLOCK_DELAY_GPC, 0x00000200},
+ {REG_A6XX_RBBM_CLOCK_DELAY_HLSQ, 0x00000000},
+ {REG_A6XX_RBBM_CLOCK_HYST_TSE_RAS_RBBM, 0x00000000},
+ {REG_A6XX_RBBM_CLOCK_HYST_VFD, 0x00000000},
+ {REG_A6XX_RBBM_CLOCK_HYST_GPC, 0x04104004},
+ {REG_A6XX_RBBM_CLOCK_HYST_HLSQ, 0x00000000},
+ {REG_A6XX_RBBM_CLOCK_CNTL_TEX_FCHE, 0x00000222},
+ {REG_A6XX_RBBM_CLOCK_DELAY_TEX_FCHE, 0x00000111},
+ {REG_A6XX_RBBM_CLOCK_HYST_TEX_FCHE, 0x00000777},
+ {REG_A6XX_RBBM_CLOCK_CNTL_UCHE, 0x22222222},
+ {REG_A6XX_RBBM_CLOCK_HYST_UCHE, 0x00000004},
+ {REG_A6XX_RBBM_CLOCK_DELAY_UCHE, 0x00000002},
+ {REG_A6XX_RBBM_ISDB_CNT, 0x00000182},
+ {REG_A6XX_RBBM_RAC_THRESHOLD_CNT, 0x00000000},
+ {REG_A6XX_RBBM_SP_HYST_CNT, 0x00000000},
+ {REG_A6XX_RBBM_CLOCK_CNTL_GMU_GX, 0x00000222},
+ {REG_A6XX_RBBM_CLOCK_DELAY_GMU_GX, 0x00000111},
+ {REG_A6XX_RBBM_CLOCK_HYST_GMU_GX, 0x00000555},
+};
+
static const struct adreno_info gpulist[] = {
{
.rev = ADRENO_REV(2, 0, 0, 0),
@@ -323,6 +427,8 @@ static const struct adreno_info gpulist[] = {
.inactive_period = DRM_MSM_INACTIVE_PERIOD,
.init = a6xx_gpu_init,
.zapfw = "a640_zap.mdt",
+ .hwcg = a640_hwcg,
+ .hwcg_count = ARRAY_SIZE(a640_hwcg),
}, {
.rev = ADRENO_REV(6, 5, 0, ANY_ID),
.revn = 650,
@@ -335,6 +441,8 @@ static const struct adreno_info gpulist[] = {
.inactive_period = DRM_MSM_INACTIVE_PERIOD,
.init = a6xx_gpu_init,
.zapfw = "a650_zap.mdt",
+ .hwcg = a650_hwcg,
+ .hwcg_count = ARRAY_SIZE(a650_hwcg),
},
};

--
2.26.1
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