From 8e008dd70e0cf5b0fd7a5a29e00f613370e5ca74 Mon Sep 17 00:00:00 2001
From: Sonny Jiang <sonny.jiang@amd.com>
Date: Wed, 11 May 2016 13:29:48 -0400
Subject: amdgpu/uvd: separate context buffer from DPB
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Updated to handle latest UVD ucode.

Signed-off-by: Sonny Jiang <sonny.jiang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
index 0081cf5..01abfc2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -41,6 +41,8 @@
 
 /* 1 second timeout */
 #define UVD_IDLE_TIMEOUT_MS	1000
+/* Polaris10/11 firmware version */
+#define FW_1_66_16 ((1 << 24) | (66 << 16) | (16 << 8))
 
 /* Firmware Names */
 #ifdef CONFIG_DRM_AMDGPU_CIK
@@ -184,6 +186,12 @@ int amdgpu_uvd_sw_init(struct amdgpu_device *adev)
 	adev->uvd.fw_version = ((version_major << 24) | (version_minor << 16) |
 				(family_id << 8));
 
+	if ((adev->asic_type == CHIP_POLARIS10 ||
+	     adev->asic_type == CHIP_POLARIS11) &&
+	    (adev->uvd.fw_version < FW_1_66_16))
+		DRM_ERROR("POLARIS10/11 UVD firmware version %hu.%hu is too old.\n",
+			  version_major, version_minor);
+
 	bo_size = AMDGPU_GPU_PAGE_ALIGN(le32_to_cpu(hdr->ucode_size_bytes) + 8)
 		  +  AMDGPU_UVD_STACK_SIZE + AMDGPU_UVD_HEAP_SIZE
 		  +  AMDGPU_UVD_SESSION_SIZE * adev->uvd.max_handles;
@@ -414,7 +422,8 @@ static int amdgpu_uvd_cs_pass1(struct amdgpu_uvd_cs_ctx *ctx)
  *
  * Peek into the decode message and calculate the necessary buffer sizes.
  */
-static int amdgpu_uvd_cs_msg_decode(uint32_t *msg, unsigned buf_sizes[])
+static int amdgpu_uvd_cs_msg_decode(struct amdgpu_device *adev, uint32_t *msg,
+	unsigned buf_sizes[])
 {
 	unsigned stream_type = msg[4];
 	unsigned width = msg[6];
@@ -436,7 +445,6 @@ static int amdgpu_uvd_cs_msg_decode(uint32_t *msg, unsigned buf_sizes[])
 
 	switch (stream_type) {
 	case 0: /* H264 */
-	case 7: /* H264 Perf */
 		switch(level) {
 		case 30:
 			num_dpb_buffer = 8100 / fs_in_mb;
@@ -514,6 +522,54 @@ static int amdgpu_uvd_cs_msg_decode(uint32_t *msg, unsigned buf_sizes[])
 		min_dpb_size += ALIGN(width_in_mb * height_in_mb * 32, 64);
 		break;
 
+	case 7: /* H264 Perf */
+		switch(level) {
+		case 30:
+			num_dpb_buffer = 8100 / fs_in_mb;
+			break;
+		case 31:
+			num_dpb_buffer = 18000 / fs_in_mb;
+			break;
+		case 32:
+			num_dpb_buffer = 20480 / fs_in_mb;
+			break;
+		case 41:
+			num_dpb_buffer = 32768 / fs_in_mb;
+			break;
+		case 42:
+			num_dpb_buffer = 34816 / fs_in_mb;
+			break;
+		case 50:
+			num_dpb_buffer = 110400 / fs_in_mb;
+			break;
+		case 51:
+			num_dpb_buffer = 184320 / fs_in_mb;
+			break;
+		default:
+			num_dpb_buffer = 184320 / fs_in_mb;
+			break;
+		}
+		num_dpb_buffer++;
+		if (num_dpb_buffer > 17)
+			num_dpb_buffer = 17;
+
+		/* reference picture buffer */
+		min_dpb_size = image_size * num_dpb_buffer;
+
+		if (adev->asic_type < CHIP_POLARIS10){
+			/* macroblock context buffer */
+			min_dpb_size +=
+				width_in_mb * height_in_mb * num_dpb_buffer * 192;
+
+			/* IT surface buffer */
+			min_dpb_size += width_in_mb * height_in_mb * 32;
+		} else {
+			/* macroblock context buffer */
+			min_ctx_size =
+				width_in_mb * height_in_mb * num_dpb_buffer * 192;
+		}
+		break;
+
 	case 16: /* H265 */
 		image_size = (ALIGN(width, 16) * ALIGN(height, 16) * 3) / 2;
 		image_size = ALIGN(image_size, 256);
@@ -609,7 +665,7 @@ static int amdgpu_uvd_cs_msg(struct amdgpu_uvd_cs_ctx *ctx,
 
 	case 1:
 		/* it's a decode msg, calc buffer sizes */
-		r = amdgpu_uvd_cs_msg_decode(msg, ctx->buf_sizes);
+		r = amdgpu_uvd_cs_msg_decode(adev, msg, ctx->buf_sizes);
 		amdgpu_bo_kunmap(bo);
 		if (r)
 			return r;
-- 
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