r6xx/r7xx: add support for tiling with kms (v3)

Requires radeon drm 2.6.0 and updated mesa.

v2: - fix lockup due to not emiting DB_DEPTH_INFO
https://bugs.freedesktop.org/show_bug.cgi?id=28342
    - fix drm minor version to deal with evergreen accel
v3: rebase on current ddx git

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>

8 files changed, 150 insertions, 26 deletions

diff --git a/src/drmmode_display.c b/src/drmmode_display.c
index e2d516b4..6a4a32d1 100644
--- a/src/drmmode_display.c
+++ b/src/drmmode_display.c
@@ -1101,8 +1101,11 @@ drmmode_xf86crtc_resize (ScrnInfoPtr scrn, int width, int height)
 	if (!info->front_bo)
 		goto fail;
 
-	if (info->allowColorTiling)
-	    tiling_flags |= RADEON_TILING_MACRO;
+	/* no tiled scanout on r6xx+ yet */
+	if (info->allowColorTiling) {
+		if (info->ChipFamily < CHIP_FAMILY_R600)
+			tiling_flags |= RADEON_TILING_MACRO;
+	}
 #if X_BYTE_ORDER == X_BIG_ENDIAN
 	switch (cpp) {
 	case 4:
diff --git a/src/r600_exa.c b/src/r600_exa.c
index 638bd382..911dba08 100644
--- a/src/r600_exa.c
+++ b/src/r600_exa.c
@@ -2151,6 +2151,9 @@ R600DrawInit(ScreenPtr pScreen)
 	info->accel_state->exa->FinishAccess = RADEONFinishAccess_CS;
 	info->accel_state->exa->UploadToScreen = R600UploadToScreenCS;
 	info->accel_state->exa->DownloadFromScreen = R600DownloadFromScreenCS;
+#if (EXA_VERSION_MAJOR == 2 && EXA_VERSION_MINOR >= 5)
+        info->accel_state->exa->CreatePixmap2 = RADEONEXACreatePixmap2;
+#endif
     } else
 #endif
 #endif
diff --git a/src/r600_state.h b/src/r600_state.h
index 4e65bc1f..151f402a 100644
--- a/src/r600_state.h
+++ b/src/r600_state.h
@@ -330,6 +330,9 @@ R600SetAccelState(ScrnInfoPtr pScrn,
 extern Bool RADEONPrepareAccess_CS(PixmapPtr pPix, int index);
 extern void RADEONFinishAccess_CS(PixmapPtr pPix, int index);
 extern void *RADEONEXACreatePixmap(ScreenPtr pScreen, int size, int align);
+extern void *RADEONEXACreatePixmap2(ScreenPtr pScreen, int width, int height,
+				    int depth, int usage_hint, int bitsPerPixel,
+				    int *new_pitch);
 extern void RADEONEXADestroyPixmap(ScreenPtr pScreen, void *driverPriv);
 extern struct radeon_bo *radeon_get_pixmap_bo(PixmapPtr pPix);
 extern Bool RADEONEXAPixmapIsOffscreen(PixmapPtr pPix);
diff --git a/src/r6xx_accel.c b/src/r6xx_accel.c
index b34b6c5e..86817bdb 100644
--- a/src/r6xx_accel.c
+++ b/src/r6xx_accel.c
@@ -258,16 +258,21 @@ set_render_target(ScrnInfoPtr pScrn, drmBufPtr ib, cb_config_t *cb_conf, uint32_
     EREG(ib, (CB_COLOR0_FRAG + (4 * cb_conf->id)), (0     >> 8));	// FMASK per-tile data base/256
     RELOC_BATCH(cb_conf->bo, 0, domain);
     END_BATCH();
-    BEGIN_BATCH(12);
+    BEGIN_BATCH(9);
     // pitch only for ARRAY_LINEAR_GENERAL, other tiling modes require addrlib
     EREG(ib, (CB_COLOR0_SIZE + (4 * cb_conf->id)), ((pitch << PITCH_TILE_MAX_shift)	|
 						    (slice << SLICE_TILE_MAX_shift)));
     EREG(ib, (CB_COLOR0_VIEW + (4 * cb_conf->id)), ((0    << SLICE_START_shift)		|
 						    (0    << SLICE_MAX_shift)));
-    EREG(ib, (CB_COLOR0_INFO + (4 * cb_conf->id)), cb_color_info);
     EREG(ib, (CB_COLOR0_MASK + (4 * cb_conf->id)), ((0    << CMASK_BLOCK_MAX_shift)	|
 						    (0    << FMASK_TILE_MAX_shift)));
     END_BATCH();
+
+    BEGIN_BATCH(3 + 2);
+    EREG(ib, (CB_COLOR0_INFO + (4 * cb_conf->id)), cb_color_info);
+    RELOC_BATCH(cb_conf->bo, 0, domain);
+    END_BATCH();
+
 }
 
 static void
@@ -885,7 +890,13 @@ set_default_state(ScrnInfoPtr pScrn, drmBufPtr ib)
 
     sq_setup(pScrn, ib, &sq_conf);
 
-    BEGIN_BATCH(83);
+    /* set fake reloc for unused depth */
+    BEGIN_BATCH(3 + 2);
+    EREG(ib, DB_DEPTH_INFO, 0);
+    RELOC_BATCH(accel_state->shaders_bo, RADEON_GEM_DOMAIN_VRAM, 0);
+    END_BATCH();
+
+    BEGIN_BATCH(80);
     if (info->ChipFamily < CHIP_FAMILY_RV770) {
 	EREG(ib, TA_CNTL_AUX, (( 3 << GRADIENT_CREDIT_shift) |
 				 - (28 << TD_FIFO_CREDIT_shift)));
@@ -928,7 +939,6 @@ set_default_state(ScrnInfoPtr pScrn, drmBufPtr ib)
     E32(ib, 0); // SQ_GS_VERT_ITEMSIZE
 
     // DB
-    EREG(ib, DB_DEPTH_INFO,                       0);
     EREG(ib, DB_DEPTH_CONTROL,                    0);
     PACK0(ib, DB_RENDER_CONTROL, 2);
     E32(ib, STENCIL_COMPRESS_DISABLE_bit | DEPTH_COMPRESS_DISABLE_bit);
diff --git a/src/radeon.h b/src/radeon.h
index 55d673a3..d66cdd93 100644
--- a/src/radeon.h
+++ b/src/radeon.h
@@ -1035,6 +1035,12 @@ typedef struct {
     uint64_t vram_size;
     uint64_t gart_size;
     drmmode_rec drmmode;
+    /* r6xx+ tile config */
+    uint32_t tile_config;
+    int group_bytes;
+    int num_channels;
+    int num_banks;
+    int r7xx_bank_op;
 #else
     /* fake bool */
     Bool cs;
diff --git a/src/radeon_dri2.c b/src/radeon_dri2.c
index a0ed0857..9697bbc8 100644
--- a/src/radeon_dri2.c
+++ b/src/radeon_dri2.c
@@ -101,7 +101,10 @@ radeon_dri2_create_buffers(DrawablePtr drawable,
 	    switch(attachments[i]) {
 	    case DRI2BufferDepth:
 	    case DRI2BufferDepthStencil:
-		flags = RADEON_CREATE_PIXMAP_TILING_MACRO | RADEON_CREATE_PIXMAP_TILING_MICRO;
+		if (info->ChipFamily >= CHIP_FAMILY_R600)
+		    flags = RADEON_CREATE_PIXMAP_TILING_MACRO;
+		else
+		    flags = RADEON_CREATE_PIXMAP_TILING_MACRO | RADEON_CREATE_PIXMAP_TILING_MICRO;
 		break;
 	    case DRI2BufferBackLeft:
 	    case DRI2BufferBackRight:
@@ -183,7 +186,10 @@ radeon_dri2_create_buffer(DrawablePtr drawable,
 	switch(attachment) {
 	case DRI2BufferDepth:
 	case DRI2BufferDepthStencil:
-	    flags = RADEON_CREATE_PIXMAP_TILING_MACRO | RADEON_CREATE_PIXMAP_TILING_MICRO;
+		if (info->ChipFamily >= CHIP_FAMILY_R600)
+		    flags = RADEON_CREATE_PIXMAP_TILING_MACRO;
+		else
+		    flags = RADEON_CREATE_PIXMAP_TILING_MACRO | RADEON_CREATE_PIXMAP_TILING_MICRO;
 	    break;
 	case DRI2BufferBackLeft:
 	case DRI2BufferBackRight:
diff --git a/src/radeon_exa.c b/src/radeon_exa.c
index 7dd792e6..814c8641 100644
--- a/src/radeon_exa.c
+++ b/src/radeon_exa.c
@@ -430,11 +430,27 @@ void *RADEONEXACreatePixmap2(ScreenPtr pScreen, int width, int height,
         tiling &= ~RADEON_TILING_MACRO;
     }
 
-    if (tiling) {
-	height = RADEON_ALIGN(height, 16);
-	pixmap_align = 256;
-    } else
-	pixmap_align = 64;
+    if (info->ChipFamily >= CHIP_FAMILY_R600) {
+	int bpe = bitsPerPixel / 8;
+
+	if (tiling & RADEON_TILING_MACRO) {
+	    height = RADEON_ALIGN(height, info->num_banks * 8);
+	    pixmap_align = MAX(info->num_banks,
+			       (((info->group_bytes / 8) / bpe) * info->num_banks)) * 8 * bpe;
+	} else if (tiling & RADEON_TILING_MICRO) {
+	    height = RADEON_ALIGN(height, 8);
+	    pixmap_align = MAX(8, (info->group_bytes / (8 * bpe))) * bpe;
+	} else {
+	    height = RADEON_ALIGN(height, 8);
+	    pixmap_align = 256; /* 8 * bpe */
+	}
+    } else {
+	if (tiling) {
+	    height = RADEON_ALIGN(height, 16);
+	    pixmap_align = 256;
+	} else
+	    pixmap_align = 64;
+    }
 
     padded_width = ((width * bitsPerPixel + FB_MASK) >> FB_SHIFT) * sizeof(FbBits);
     padded_width = RADEON_ALIGN(padded_width, pixmap_align);
diff --git a/src/radeon_kms.c b/src/radeon_kms.c
index 772be8ff..ba13071f 100644
--- a/src/radeon_kms.c
+++ b/src/radeon_kms.c
@@ -421,6 +421,74 @@ static Bool radeon_open_drm_master(ScrnInfoPtr pScrn)
     return TRUE;
 }
 
+static Bool r600_get_tile_config(ScrnInfoPtr pScrn)
+{
+    RADEONInfoPtr  info   = RADEONPTR(pScrn);
+    struct drm_radeon_info ginfo;
+    int r;
+    uint32_t tmp;
+
+    if (info->ChipFamily < CHIP_FAMILY_R600)
+	return FALSE;
+
+#ifndef RADEON_INFO_TILING_CONFIG
+#define RADEON_INFO_TILING_CONFIG 0x6
+#endif
+
+    memset(&ginfo, 0, sizeof(ginfo));
+    ginfo.request = RADEON_INFO_TILING_CONFIG;
+    ginfo.value = (uintptr_t)&tmp;
+    r = drmCommandWriteRead(info->dri->drmFD, DRM_RADEON_INFO, &ginfo, sizeof(ginfo));
+    if (r)
+	return FALSE;
+
+    info->tile_config = tmp;
+    info->r7xx_bank_op = 0;
+    if (info->ChipFamily >= CHIP_FAMILY_CEDAR) {
+	/* for now */
+	return FALSE;
+    } else {
+	switch((info->tile_config & 0xe) >> 1) {
+	case 0:
+	    info->num_channels = 1;
+	    break;
+	case 1:
+	    info->num_channels = 2;
+	    break;
+	case 2:
+	    info->num_channels = 4;
+	    break;
+	case 3:
+	    info->num_channels = 8;
+	    break;
+	default:
+	    return FALSE;
+	}
+	switch((info->tile_config & 0x30) >> 4) {
+	case 0:
+	    info->num_banks = 4;
+	    break;
+	case 1:
+	    info->num_banks = 8;
+	    break;
+	default:
+	    return FALSE;
+	}
+	switch((info->tile_config & 0xc0) >> 6) {
+	case 0:
+	    info->group_bytes = 256;
+	    break;
+	case 1:
+	    info->group_bytes = 512;
+	    break;
+	default:
+	    return FALSE;
+	}
+    }
+
+    return TRUE;
+}
+
 Bool RADEONPreInit_KMS(ScrnInfoPtr pScrn, int flags)
 {
     RADEONInfoPtr     info;
@@ -484,18 +552,6 @@ Bool RADEONPreInit_KMS(ScrnInfoPtr pScrn, int flags)
     if (!radeon_alloc_dri(pScrn))
 	return FALSE;
 
-    colorTilingDefault = info->ChipFamily >= CHIP_FAMILY_R300 &&
-                         info->ChipFamily <= CHIP_FAMILY_RS740;
-
-    info->allowColorTiling = xf86ReturnOptValBool(info->Options,
-                                        OPTION_COLOR_TILING, colorTilingDefault);
-    if (info->ChipFamily >= CHIP_FAMILY_R600) {
-	    xf86DrvMsg(pScrn->scrnIndex, X_WARNING, "Color tiling is not yet supported on R600/R700\n");
-	    info->allowColorTiling = FALSE;
-    }
-    xf86DrvMsg(pScrn->scrnIndex, X_INFO,
-	 "KMS Color Tiling: %sabled\n", info->allowColorTiling ? "en" : "dis");
-
     if (radeon_open_drm_master(pScrn) == FALSE) {
 	xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Kernel modesetting setup failed\n");
 	goto fail;
@@ -509,6 +565,25 @@ Bool RADEONPreInit_KMS(ScrnInfoPtr pScrn, int flags)
 	goto fail;
     }
 
+    colorTilingDefault = info->ChipFamily >= CHIP_FAMILY_R300 &&
+                         info->ChipFamily <= CHIP_FAMILY_RS740;
+
+    if (info->ChipFamily >= CHIP_FAMILY_R600) {
+	if (info->dri->pKernelDRMVersion->version_minor >= 6) {
+	    info->allowColorTiling = xf86ReturnOptValBool(info->Options,
+							  OPTION_COLOR_TILING, colorTilingDefault);
+	    if (info->allowColorTiling)
+		info->allowColorTiling = r600_get_tile_config(pScrn);
+	} else
+	    xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+		       "R6xx+ KMS Color Tiling requires radeon drm 2.6.0 or newer\n");
+    } else
+	info->allowColorTiling = xf86ReturnOptValBool(info->Options,
+						      OPTION_COLOR_TILING, colorTilingDefault);
+
+    xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+	 "KMS Color Tiling: %sabled\n", info->allowColorTiling ? "en" : "dis");
+
     if (drmmode_pre_init(pScrn, &info->drmmode, pScrn->bitsPerPixel / 8) == FALSE) {
 	xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Kernel modesetting setup failed\n");
 	goto fail;
@@ -1038,8 +1113,10 @@ static Bool radeon_setup_kernel_mem(ScreenPtr pScreen)
                 ErrorF("Failed to map cursor buffer memory\n");
             }
         }
+	/* no tiled scanout on r6xx+ yet */
         if (info->allowColorTiling) {
-	    tiling_flags |= RADEON_TILING_MACRO;
+	    if (info->ChipFamily < CHIP_FAMILY_R600)
+		tiling_flags |= RADEON_TILING_MACRO;
         }
 #if X_BYTE_ORDER == X_BIG_ENDIAN
 	switch (cpp) {