[PATCH 2/3] drm/msm: Expand UBWC config setting

[Connor Abbott]

According to downstream we should be setting RBBM_NC_MODE_CNTL to a
non-default value on a663 and a680, we don't support a663 and on a680
we're leaving it at the wrong (suboptimal) value. Just set it on all
GPUs. Similarly, plumb through level2_swizzling_dis which will be
necessary on a663.

ubwc_mode is expanded and renamed to ubwc_swizzle to match the name on
the display side. Similarly macrotile_mode should match the display
side.

Signed-off-by: Connor Abbott <cwabbott0 at gmail.com>
---
 drivers/gpu/drm/msm/adreno/a5xx_gpu.c   |  4 ++++
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c   | 36 ++++++++++++++++++++++++---------
 drivers/gpu/drm/msm/adreno/adreno_gpu.h |  3 ++-
 3 files changed, 33 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
index c003f970189b..33b0f607f913 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
@@ -1788,5 +1788,9 @@ struct msm_gpu *a5xx_gpu_init(struct drm_device *dev)
 	else
 		adreno_gpu->ubwc_config.highest_bank_bit = 14;
 
+	/* a5xx only supports UBWC 1.0, these are not configurable */
+	adreno_gpu->ubwc_config.macrotile_mode = 0;
+	adreno_gpu->ubwc_config.ubwc_swizzle = 0x7;
+
 	return gpu;
 }
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index c98cdb1e9326..7a3564dd7941 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -499,8 +499,17 @@ static void a6xx_calc_ubwc_config(struct adreno_gpu *gpu)
 	gpu->ubwc_config.uavflagprd_inv = 0;
 	/* Whether the minimum access length is 64 bits */
 	gpu->ubwc_config.min_acc_len = 0;
-	/* Entirely magic, per-GPU-gen value */
-	gpu->ubwc_config.ubwc_mode = 0;
+	/* Whether to enable level 1, 2 & 3 bank swizzling.
+	 * UBWC 1.0 always enables all three levels.
+	 * UBWC 2.0 removes level 1 bank swizzling, leaving levels 2 & 3.
+	 * UBWC 4.0 adds the optional ability to disable levels 2 & 3.
+	 */
+	gpu->ubwc_config.ubwc_swizzle = 0x6;
+	/* Whether to use 4-channel macrotiling mode or the newer 8-channel
+	 * macrotiling mode introduced in UBWC 3.1. 0 is 4-channel and 1 is
+	 * 8-channel.
+	 */
+	gpu->ubwc_config.macrotile_mode = 0;
 	/*
 	 * The Highest Bank Bit value represents the bit of the highest DDR bank.
 	 * This should ideally use DRAM type detection.
@@ -510,7 +519,7 @@ static void a6xx_calc_ubwc_config(struct adreno_gpu *gpu)
 	if (adreno_is_a610(gpu)) {
 		gpu->ubwc_config.highest_bank_bit = 13;
 		gpu->ubwc_config.min_acc_len = 1;
-		gpu->ubwc_config.ubwc_mode = 1;
+		gpu->ubwc_config.ubwc_swizzle = 0x7;
 	}
 
 	if (adreno_is_a618(gpu))
@@ -536,6 +545,7 @@ static void a6xx_calc_ubwc_config(struct adreno_gpu *gpu)
 		gpu->ubwc_config.amsbc = 1;
 		gpu->ubwc_config.rgb565_predicator = 1;
 		gpu->ubwc_config.uavflagprd_inv = 2;
+		gpu->ubwc_config.macrotile_mode = 1;
 	}
 
 	if (adreno_is_7c3(gpu)) {
@@ -543,12 +553,12 @@ static void a6xx_calc_ubwc_config(struct adreno_gpu *gpu)
 		gpu->ubwc_config.amsbc = 1;
 		gpu->ubwc_config.rgb565_predicator = 1;
 		gpu->ubwc_config.uavflagprd_inv = 2;
+		gpu->ubwc_config.macrotile_mode = 1;
 	}
 
 	if (adreno_is_a702(gpu)) {
 		gpu->ubwc_config.highest_bank_bit = 14;
 		gpu->ubwc_config.min_acc_len = 1;
-		gpu->ubwc_config.ubwc_mode = 0;
 	}
 }
 
@@ -564,21 +574,26 @@ static void a6xx_set_ubwc_config(struct msm_gpu *gpu)
 	u32 hbb = adreno_gpu->ubwc_config.highest_bank_bit - 13;
 	u32 hbb_hi = hbb >> 2;
 	u32 hbb_lo = hbb & 3;
+	u32 ubwc_mode = adreno_gpu->ubwc_config.ubwc_swizzle & 1;
+	u32 level2_swizzling_dis = !(adreno_gpu->ubwc_config.ubwc_swizzle & 2);
 
 	gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL,
+		  level2_swizzling_dis << 12 |
 		  adreno_gpu->ubwc_config.rgb565_predicator << 11 |
 		  hbb_hi << 10 | adreno_gpu->ubwc_config.amsbc << 4 |
 		  adreno_gpu->ubwc_config.min_acc_len << 3 |
-		  hbb_lo << 1 | adreno_gpu->ubwc_config.ubwc_mode);
+		  hbb_lo << 1 | ubwc_mode);
 
-	gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, hbb_hi << 4 |
+	gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL,
+		  level2_swizzling_dis << 6 | hbb_hi << 4 |
 		  adreno_gpu->ubwc_config.min_acc_len << 3 |
-		  hbb_lo << 1 | adreno_gpu->ubwc_config.ubwc_mode);
+		  hbb_lo << 1 | ubwc_mode);
 
-	gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL, hbb_hi << 10 |
+	gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL,
+		  level2_swizzling_dis << 12 | hbb_hi << 10 |
 		  adreno_gpu->ubwc_config.uavflagprd_inv << 4 |
 		  adreno_gpu->ubwc_config.min_acc_len << 3 |
-		  hbb_lo << 1 | adreno_gpu->ubwc_config.ubwc_mode);
+		  hbb_lo << 1 | ubwc_mode);
 
 	if (adreno_is_a7xx(adreno_gpu))
 		gpu_write(gpu, REG_A7XX_GRAS_NC_MODE_CNTL,
@@ -586,6 +601,9 @@ static void a6xx_set_ubwc_config(struct msm_gpu *gpu)
 
 	gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL,
 		  adreno_gpu->ubwc_config.min_acc_len << 23 | hbb_lo << 21);
+
+	gpu_write(gpu, REG_A6XX_RBBM_NC_MODE_CNTL,
+		  adreno_gpu->ubwc_config.macrotile_mode);
 }
 
 static int a6xx_cp_init(struct msm_gpu *gpu)
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index cff8ce541d2c..b2da660c10c7 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -194,9 +194,10 @@ struct adreno_gpu {
 		u32 rgb565_predicator;
 		u32 uavflagprd_inv;
 		u32 min_acc_len;
-		u32 ubwc_mode;
+		u32 ubwc_swizzle;
 		u32 highest_bank_bit;
 		u32 amsbc;
+		u32 macrotile_mode;
 	} ubwc_config;
 
 	/*

-- 
2.31.1