drm/radeon: add initial support for R6xx/R7xx GPUs

This adds support for 2D/Xv acceleration in the X.org 2D driver,
to the drm. It doesn't yet provide any 3D support hooks.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/Makefile

@@ -3,7 +3,7 @@
 # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
 
 ccflags-y := -Iinclude/drm
-radeon-y := radeon_drv.o radeon_cp.o radeon_state.o radeon_mem.o radeon_irq.o r300_cmdbuf.o
+radeon-y := radeon_drv.o radeon_cp.o radeon_state.o radeon_mem.o radeon_irq.o r300_cmdbuf.o r600_cp.o
 
 radeon-$(CONFIG_COMPAT) += radeon_ioc32.o
 

drivers/gpu/drm/radeon/radeon_drv.h

@@ -396,6 +396,8 @@ extern int radeon_engine_reset(struct drm_device *dev, void *data, struct drm_fi
 extern int radeon_fullscreen(struct drm_device *dev, void *data, struct drm_file *file_priv);
 extern int radeon_cp_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv);
 extern u32 radeon_read_fb_location(drm_radeon_private_t *dev_priv);
+extern void radeon_write_agp_location(drm_radeon_private_t *dev_priv, u32 agp_loc);
+extern void radeon_write_agp_base(drm_radeon_private_t *dev_priv, u64 agp_base);
 extern u32 RADEON_READ_MM(drm_radeon_private_t *dev_priv, int addr);
 
 extern void radeon_freelist_reset(struct drm_device * dev);
@@ -416,6 +418,10 @@ extern void radeon_mem_takedown(struct mem_block **heap);
 extern void radeon_mem_release(struct drm_file *file_priv,
 			       struct mem_block *heap);
 
+extern void radeon_enable_bm(struct drm_radeon_private *dev_priv);
+extern u32 radeon_read_ring_rptr(drm_radeon_private_t *dev_priv, u32 off);
+extern void radeon_write_ring_rptr(drm_radeon_private_t *dev_priv, u32 off, u32 val);
+
 				/* radeon_irq.c */
 extern void radeon_irq_set_state(struct drm_device *dev, u32 mask, int state);
 extern int radeon_irq_emit(struct drm_device *dev, void *data, struct drm_file *file_priv);
@@ -456,6 +462,19 @@ extern int r300_do_cp_cmdbuf(struct drm_device *dev,
 			     struct drm_file *file_priv,
 			     drm_radeon_kcmd_buffer_t *cmdbuf);
 
+/* r600_cp.c */
+extern int r600_do_engine_reset(struct drm_device *dev);
+extern int r600_do_cleanup_cp(struct drm_device *dev);
+extern int r600_do_init_cp(struct drm_device *dev, drm_radeon_init_t *init,
+			   struct drm_file *file_priv);
+extern int r600_do_resume_cp(struct drm_device *dev, struct drm_file *file_priv);
+extern int r600_do_cp_idle(drm_radeon_private_t *dev_priv);
+extern void r600_do_cp_start(drm_radeon_private_t *dev_priv);
+extern void r600_do_cp_reset(drm_radeon_private_t *dev_priv);
+extern void r600_do_cp_stop(drm_radeon_private_t *dev_priv);
+extern int r600_cp_dispatch_indirect(struct drm_device *dev,
+				     struct drm_buf *buf, int start, int end);
+
 /* Flags for stats.boxes
  */
 #define RADEON_BOX_DMA_IDLE      0x1
@@ -1832,7 +1851,11 @@ do {								\
 	struct drm_radeon_master_private *master_priv = file_priv->master->driver_priv;	\
 	drm_radeon_sarea_t *sarea_priv = master_priv->sarea_priv;	\
 	if ( sarea_priv->last_dispatch >= RADEON_MAX_VB_AGE ) {		\
-		int __ret = radeon_do_cp_idle( dev_priv );		\
+		int __ret;						\
+		if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600) \
+			__ret = r600_do_cp_idle(dev_priv);		\
+		else							\
+			__ret = radeon_do_cp_idle(dev_priv);		\
 		if ( __ret ) return __ret;				\
 		sarea_priv->last_dispatch = 0;				\
 		radeon_freelist_reset( dev );				\

drivers/gpu/drm/radeon/radeon_state.c

@@ -1556,9 +1556,15 @@ static void radeon_cp_discard_buffer(struct drm_device *dev, struct drm_master *
 	buf_priv->age = ++master_priv->sarea_priv->last_dispatch;
 
 	/* Emit the vertex buffer age */
-	BEGIN_RING(2);
-	RADEON_DISPATCH_AGE(buf_priv->age);
-	ADVANCE_RING();
+	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600) {
+		BEGIN_RING(3);
+		R600_DISPATCH_AGE(buf_priv->age);
+		ADVANCE_RING();
+	} else {
+		BEGIN_RING(2);
+		RADEON_DISPATCH_AGE(buf_priv->age);
+		ADVANCE_RING();
+	}
 
 	buf->pending = 1;
 	buf->used = 0;
@@ -2473,24 +2479,25 @@ static int radeon_cp_indirect(struct drm_device *dev, void *data, struct drm_fil
 
 	buf->used = indirect->end;
 
-	/* Wait for the 3D stream to idle before the indirect buffer
-	 * containing 2D acceleration commands is processed.
-	 */
-	BEGIN_RING(2);
-
-	RADEON_WAIT_UNTIL_3D_IDLE();
-
-	ADVANCE_RING();
-
 	/* Dispatch the indirect buffer full of commands from the
 	 * X server.  This is insecure and is thus only available to
 	 * privileged clients.
 	 */
-	radeon_cp_dispatch_indirect(dev, buf, indirect->start, indirect->end);
-	if (indirect->discard) {
-		radeon_cp_discard_buffer(dev, file_priv->master, buf);
+	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600)
+		r600_cp_dispatch_indirect(dev, buf, indirect->start, indirect->end);
+	else {
+		/* Wait for the 3D stream to idle before the indirect buffer
+		 * containing 2D acceleration commands is processed.
+		 */
+		BEGIN_RING(2);
+		RADEON_WAIT_UNTIL_3D_IDLE();
+		ADVANCE_RING();
+		radeon_cp_dispatch_indirect(dev, buf, indirect->start, indirect->end);
 	}
 
+	if (indirect->discard)
+		radeon_cp_discard_buffer(dev, file_priv->master, buf);
+
 	COMMIT_RING();
 	return 0;
 }
@@ -3052,7 +3059,10 @@ static int radeon_cp_getparam(struct drm_device *dev, void *data, struct drm_fil
 	case RADEON_PARAM_SCRATCH_OFFSET:
 		if (!dev_priv->writeback_works)
 			return -EINVAL;
-		value = RADEON_SCRATCH_REG_OFFSET;
+		if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600)
+			value = R600_SCRATCH_REG_OFFSET;
+		else
+			value = RADEON_SCRATCH_REG_OFFSET;
 		break;
 	case RADEON_PARAM_CARD_TYPE:
 		if (dev_priv->flags & RADEON_IS_PCIE)