1 files changed, 64 insertions, 5 deletions

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
index 4e5d650578c6..91a564a24dbe 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c
@@ -882,12 +882,13 @@ static void a6xx_snapshot_gmu_hfi_history(struct msm_gpu *gpu,
 	}
 }
 
+#define A6XX_REGLIST_SIZE        1
 #define A6XX_GBIF_REGLIST_SIZE   1
 static void a6xx_get_registers(struct msm_gpu *gpu,
 		struct a6xx_gpu_state *a6xx_state,
 		struct a6xx_crashdumper *dumper)
 {
-	int i, count = ARRAY_SIZE(a6xx_ahb_reglist) +
+	int i, count = A6XX_REGLIST_SIZE +
 		ARRAY_SIZE(a6xx_reglist) +
 		ARRAY_SIZE(a6xx_hlsq_reglist) + A6XX_GBIF_REGLIST_SIZE;
 	int index = 0;
@@ -901,12 +902,20 @@ static void a6xx_get_registers(struct msm_gpu *gpu,
 
 	a6xx_state->nr_registers = count;
 
-	for (i = 0; i < ARRAY_SIZE(a6xx_ahb_reglist); i++)
+	if (adreno_is_a7xx(adreno_gpu))
 		a6xx_get_ahb_gpu_registers(gpu,
-			a6xx_state, &a6xx_ahb_reglist[i],
+			a6xx_state, &a7xx_ahb_reglist,
+			&a6xx_state->registers[index++]);
+	else
+		a6xx_get_ahb_gpu_registers(gpu,
+			a6xx_state, &a6xx_ahb_reglist,
 			&a6xx_state->registers[index++]);
 
-	if (a6xx_has_gbif(adreno_gpu))
+	if (adreno_is_a7xx(adreno_gpu))
+		a6xx_get_ahb_gpu_registers(gpu,
+				a6xx_state, &a7xx_gbif_reglist,
+				&a6xx_state->registers[index++]);
+	else if (a6xx_has_gbif(adreno_gpu))
 		a6xx_get_ahb_gpu_registers(gpu,
 				a6xx_state, &a6xx_gbif_reglist,
 				&a6xx_state->registers[index++]);
@@ -948,6 +957,18 @@ static u32 a6xx_get_cp_roq_size(struct msm_gpu *gpu)
 	return gpu_read(gpu, REG_A6XX_CP_ROQ_THRESHOLDS_2) >> 14;
 }
 
+static u32 a7xx_get_cp_roq_size(struct msm_gpu *gpu)
+{
+	/*
+	 * The value at CP_ROQ_THRESHOLDS_2[20:31] is in 4dword units.
+	 * That register however is not directly accessible from APSS on A7xx.
+	 * Program the SQE_UCODE_DBG_ADDR with offset=0x70d3 and read the value.
+	 */
+	gpu_write(gpu, REG_A6XX_CP_SQE_UCODE_DBG_ADDR, 0x70d3);
+
+	return 4 * (gpu_read(gpu, REG_A6XX_CP_SQE_UCODE_DBG_DATA) >> 20);
+}
+
 /* Read a block of data from an indexed register pair */
 static void a6xx_get_indexed_regs(struct msm_gpu *gpu,
 		struct a6xx_gpu_state *a6xx_state,
@@ -1019,8 +1040,40 @@ static void a6xx_get_indexed_registers(struct msm_gpu *gpu,
 
 	/* Restore the size in the hardware */
 	gpu_write(gpu, REG_A6XX_CP_MEM_POOL_SIZE, mempool_size);
+}
 
-	a6xx_state->nr_indexed_regs = count;
+static void a7xx_get_indexed_registers(struct msm_gpu *gpu,
+		struct a6xx_gpu_state *a6xx_state)
+{
+	int i, indexed_count, mempool_count;
+
+	indexed_count = ARRAY_SIZE(a7xx_indexed_reglist);
+	mempool_count = ARRAY_SIZE(a7xx_cp_bv_mempool_indexed);
+
+	a6xx_state->indexed_regs = state_kcalloc(a6xx_state,
+					indexed_count + mempool_count,
+					sizeof(*a6xx_state->indexed_regs));
+	if (!a6xx_state->indexed_regs)
+		return;
+
+	a6xx_state->nr_indexed_regs = indexed_count + mempool_count;
+
+	/* First read the common regs */
+	for (i = 0; i < indexed_count; i++)
+		a6xx_get_indexed_regs(gpu, a6xx_state, &a7xx_indexed_reglist[i],
+			&a6xx_state->indexed_regs[i]);
+
+	gpu_rmw(gpu, REG_A6XX_CP_CHICKEN_DBG, 0, BIT(2));
+	gpu_rmw(gpu, REG_A7XX_CP_BV_CHICKEN_DBG, 0, BIT(2));
+
+	/* Get the contents of the CP_BV mempool */
+	for (i = 0; i < mempool_count; i++)
+		a6xx_get_indexed_regs(gpu, a6xx_state, a7xx_cp_bv_mempool_indexed,
+			&a6xx_state->indexed_regs[indexed_count - 1 + i]);
+
+	gpu_rmw(gpu, REG_A6XX_CP_CHICKEN_DBG, BIT(2), 0);
+	gpu_rmw(gpu, REG_A7XX_CP_BV_CHICKEN_DBG, BIT(2), 0);
+	return;
 }
 
 struct msm_gpu_state *a6xx_gpu_state_get(struct msm_gpu *gpu)
@@ -1056,6 +1109,12 @@ struct msm_gpu_state *a6xx_gpu_state_get(struct msm_gpu *gpu)
 		return &a6xx_state->base;
 
 	/* Get the banks of indexed registers */
+	if (adreno_is_a7xx(adreno_gpu)) {
+		a7xx_get_indexed_registers(gpu, a6xx_state);
+		/* Further codeflow is untested on A7xx. */
+		return &a6xx_state->base;
+	}
+
 	a6xx_get_indexed_registers(gpu, a6xx_state);
 
 	/*