Merge from DRI CVS. Includes newly ported SiS 300/305/540/630/730 driver and

updates to allow system memory to be used for textures on PCI Radeons.

Sponsored by:	LinuxFund

17 files changed, 1261 insertions, 71 deletions

diff --git a/sys/dev/drm/drmP.h b/sys/dev/drm/drmP.h
index c91d33c..8ecb2c4 100644
--- a/sys/dev/drm/drmP.h
+++ b/sys/dev/drm/drmP.h
@@ -402,6 +402,7 @@ extern int           DRM(version)( DRM_IOCTL_ARGS );
 extern void	     DRM(mem_init)(void);
 extern void	     DRM(mem_uninit)(void);
 extern void	     *DRM(alloc)(size_t size, int area);
+extern void	     *DRM(calloc)(size_t nmemb, size_t size, int area);
 extern void	     *DRM(realloc)(void *oldpt, size_t oldsize, size_t size,
 				   int area);
 extern void	     DRM(free)(void *pt, size_t size, int area);
diff --git a/sys/dev/drm/drm_context.h b/sys/dev/drm/drm_context.h
index 3cedfc8..2c8b780 100644
--- a/sys/dev/drm/drm_context.h
+++ b/sys/dev/drm/drm_context.h
@@ -283,6 +283,11 @@ int DRM(addctx)( DRM_IOCTL_ARGS )
 		return DRM_ERR(ENOMEM);
 	}
 
+#ifdef DRIVER_CTX_CTOR
+	if ( ctx.handle != DRM_KERNEL_CONTEXT )
+		DRIVER_CTX_CTOR(ctx.handle); /* XXX: also pass dev ? */
+#endif
+
 	DRM_COPY_TO_USER_IOCTL( (drm_ctx_t *)data, ctx, sizeof(ctx) );
 
 	return 0;
@@ -341,6 +346,9 @@ int DRM(rmctx)( DRM_IOCTL_ARGS )
 
 	DRM_DEBUG( "%d\n", ctx.handle );
 	if ( ctx.handle != DRM_KERNEL_CONTEXT ) {
+#ifdef DRIVER_CTX_DTOR
+		DRIVER_CTX_DTOR(ctx.handle); /* XXX: also pass dev ? */
+#endif
 		DRM(ctxbitmap_free)( dev, ctx.handle );
 	}
 
diff --git a/sys/dev/drm/drm_memory.h b/sys/dev/drm/drm_memory.h
index f4e1133..a0e88ee 100644
--- a/sys/dev/drm/drm_memory.h
+++ b/sys/dev/drm/drm_memory.h
@@ -59,6 +59,11 @@ void *DRM(alloc)(size_t size, int area)
 	return malloc(size, DRM(M_DRM), M_NOWAIT);
 }
 
+void *DRM(calloc)(size_t nmemb, size_t size, int area)
+{
+	return malloc(size * nmemb, DRM(M_DRM), M_NOWAIT | M_ZERO);
+}
+
 void *DRM(realloc)(void *oldpt, size_t oldsize, size_t size, int area)
 {
 	void *pt;
diff --git a/sys/dev/drm/radeon.h b/sys/dev/drm/radeon.h
index c0af52b..99c6d8a 100644
--- a/sys/dev/drm/radeon.h
+++ b/sys/dev/drm/radeon.h
@@ -70,11 +70,11 @@
  * 1.5 - Add r200 packets to cmdbuf ioctl
  *     - Add r200 function to init ioctl
  *     - Add 'scalar2' instruction to cmdbuf
- * 1.6 - Add static agp memory manager
+ * 1.6 - Add static GART memory manager
  *       Add irq handler (won't be turned on unless X server knows to)
  *       Add irq ioctls and irq_active getparam.
  *       Add wait command for cmdbuf ioctl
- *       Add agp offset query for getparam
+ *       Add GART offset query for getparam
  * 1.7 - Add support for cube map registers: R200_PP_CUBIC_FACES_[0..5]
  *       and R200_PP_CUBIC_OFFSET_F1_[0..5].
  *       Added packets R200_EMIT_PP_CUBIC_FACES_[0..5] and
@@ -115,7 +115,7 @@
 
 /* When a client dies:
  *    - Check for and clean up flipped page state
- *    - Free any alloced agp memory.
+ *    - Free any alloced GART memory.
  *
  * DRM infrastructure takes care of reclaiming dma buffers.
  */
@@ -126,7 +126,7 @@ do {									\
 		if ( dev_priv->page_flipping ) {			\
 			radeon_do_cleanup_pageflip( dev );		\
 		}							\
-                radeon_mem_release( filp, dev_priv->agp_heap );		\
+                radeon_mem_release( filp, dev_priv->gart_heap );	\
                 radeon_mem_release( filp, dev_priv->fb_heap );		\
 	}								\
 } while (0)
diff --git a/sys/dev/drm/radeon_cp.c b/sys/dev/drm/radeon_cp.c
index 4cabde8..7fb205d 100644
--- a/sys/dev/drm/radeon_cp.c
+++ b/sys/dev/drm/radeon_cp.c
@@ -857,25 +857,23 @@ static void radeon_cp_init_ring_buffer( drm_device_t *dev,
 
 	/* Initialize the memory controller */
 	RADEON_WRITE( RADEON_MC_FB_LOCATION,
-		      (dev_priv->agp_vm_start - 1) & 0xffff0000 );
+		      (dev_priv->gart_vm_start - 1) & 0xffff0000 );
 
+#if __REALLY_HAVE_AGP
 	if ( !dev_priv->is_pci ) {
 		RADEON_WRITE( RADEON_MC_AGP_LOCATION,
-			      (((dev_priv->agp_vm_start - 1 +
-				 dev_priv->agp_size) & 0xffff0000) |
-			       (dev_priv->agp_vm_start >> 16)) );
-	}
+			      (((dev_priv->gart_vm_start - 1 +
+				 dev_priv->gart_size) & 0xffff0000) |
+			       (dev_priv->gart_vm_start >> 16)) );
 
-#if __REALLY_HAVE_AGP
-	if ( !dev_priv->is_pci )
 		ring_start = (dev_priv->cp_ring->offset
 			      - dev->agp->base
-			      + dev_priv->agp_vm_start);
-       else
+			      + dev_priv->gart_vm_start);
+       } else
 #endif
 		ring_start = (dev_priv->cp_ring->offset
 			      - dev->sg->handle
-			      + dev_priv->agp_vm_start);
+			      + dev_priv->gart_vm_start);
 
 	RADEON_WRITE( RADEON_CP_RB_BASE, ring_start );
 
@@ -893,7 +891,7 @@ static void radeon_cp_init_ring_buffer( drm_device_t *dev,
 		RADEON_WRITE( RADEON_CP_RB_RPTR_ADDR,
 			      dev_priv->ring_rptr->offset
 			      - dev->agp->base
-			      + dev_priv->agp_vm_start);
+			      + dev_priv->gart_vm_start);
 	} else
 #endif
 	{
@@ -991,11 +989,11 @@ static void radeon_set_pcigart( drm_radeon_private_t *dev_priv, int on )
 
 		/* set address range for PCI address translate
 		 */
-		RADEON_WRITE( RADEON_AIC_LO_ADDR, dev_priv->agp_vm_start );
-		RADEON_WRITE( RADEON_AIC_HI_ADDR, dev_priv->agp_vm_start
-						  + dev_priv->agp_size - 1);
+		RADEON_WRITE( RADEON_AIC_LO_ADDR, dev_priv->gart_vm_start );
+		RADEON_WRITE( RADEON_AIC_HI_ADDR, dev_priv->gart_vm_start
+						  + dev_priv->gart_size - 1);
 
-		/* Turn off AGP aperture -- is this required for PCIGART?
+		/* Turn off AGP aperture -- is this required for PCI GART?
 		 */
 		RADEON_WRITE( RADEON_MC_AGP_LOCATION, 0xffffffc0 ); /* ?? */
 		RADEON_WRITE( RADEON_AGP_COMMAND, 0 ); /* clear AGP_COMMAND */
@@ -1119,7 +1117,7 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 	dev_priv->ring_offset = init->ring_offset;
 	dev_priv->ring_rptr_offset = init->ring_rptr_offset;
 	dev_priv->buffers_offset = init->buffers_offset;
-	dev_priv->agp_textures_offset = init->agp_textures_offset;
+	dev_priv->gart_textures_offset = init->gart_textures_offset;
 	
 	if(!dev_priv->sarea) {
 		DRM_ERROR("could not find sarea!\n");
@@ -1164,11 +1162,10 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 		return DRM_ERR(EINVAL);
 	}
 
-	if ( !dev_priv->is_pci ) {
-		DRM_FIND_MAP( dev_priv->agp_textures,
-			      init->agp_textures_offset );
-		if(!dev_priv->agp_textures) {
-			DRM_ERROR("could not find agp texture region!\n");
+	if ( init->gart_textures_offset ) {
+		DRM_FIND_MAP( dev_priv->gart_textures, init->gart_textures_offset );
+		if ( !dev_priv->gart_textures ) {
+			DRM_ERROR("could not find GART texture region!\n");
 			dev->dev_private = (void *)dev_priv;
 			radeon_do_cleanup_cp(dev);
 			return DRM_ERR(EINVAL);
@@ -1210,25 +1207,25 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 	}
 
 
-	dev_priv->agp_size = init->agp_size;
-	dev_priv->agp_vm_start = RADEON_READ( RADEON_CONFIG_APER_SIZE );
+	dev_priv->gart_size = init->gart_size;
+	dev_priv->gart_vm_start = RADEON_READ( RADEON_CONFIG_APER_SIZE );
 #if __REALLY_HAVE_AGP
 	if ( !dev_priv->is_pci )
-		dev_priv->agp_buffers_offset = (dev_priv->buffers->offset
+		dev_priv->gart_buffers_offset = (dev_priv->buffers->offset
 						- dev->agp->base
-						+ dev_priv->agp_vm_start);
+						+ dev_priv->gart_vm_start);
 	else
 #endif
-		dev_priv->agp_buffers_offset = (dev_priv->buffers->offset
+		dev_priv->gart_buffers_offset = (dev_priv->buffers->offset
 						- dev->sg->handle
-						+ dev_priv->agp_vm_start);
+						+ dev_priv->gart_vm_start);
 
-	DRM_DEBUG( "dev_priv->agp_size %d\n",
-		   dev_priv->agp_size );
-	DRM_DEBUG( "dev_priv->agp_vm_start 0x%x\n",
-		   dev_priv->agp_vm_start );
-	DRM_DEBUG( "dev_priv->agp_buffers_offset 0x%lx\n",
-		   dev_priv->agp_buffers_offset );
+	DRM_DEBUG( "dev_priv->gart_size %d\n",
+		   dev_priv->gart_size );
+	DRM_DEBUG( "dev_priv->gart_vm_start 0x%x\n",
+		   dev_priv->gart_vm_start );
+	DRM_DEBUG( "dev_priv->gart_buffers_offset 0x%lx\n",
+		   dev_priv->gart_buffers_offset );
 
 	dev_priv->ring.start = (u32 *)dev_priv->cp_ring->handle;
 	dev_priv->ring.end = ((u32 *)dev_priv->cp_ring->handle
@@ -1465,7 +1462,7 @@ void radeon_do_release( drm_device_t *dev )
 		RADEON_WRITE( RADEON_GEN_INT_CNTL, 0 );
 
 		/* Free memory heap structures */
-		radeon_mem_takedown( &(dev_priv->agp_heap) );
+		radeon_mem_takedown( &(dev_priv->gart_heap) );
 		radeon_mem_takedown( &(dev_priv->fb_heap) );
 
 		/* deallocate kernel resources */
diff --git a/sys/dev/drm/radeon_drm.h b/sys/dev/drm/radeon_drm.h
index c228c9e..3bf4877 100644
--- a/sys/dev/drm/radeon_drm.h
+++ b/sys/dev/drm/radeon_drm.h
@@ -216,11 +216,11 @@ typedef union {
 
 #define RADEON_NR_SAREA_CLIPRECTS	12
 
-/* There are 2 heaps (local/AGP).  Each region within a heap is a
+/* There are 2 heaps (local/GART).  Each region within a heap is a
  * minimum of 64k, and there are at most 64 of them per heap.
  */
 #define RADEON_LOCAL_TEX_HEAP		0
-#define RADEON_AGP_TEX_HEAP		1
+#define RADEON_GART_TEX_HEAP		1
 #define RADEON_NR_TEX_HEAPS		2
 #define RADEON_NR_TEX_REGIONS		64
 #define RADEON_LOG_TEX_GRANULARITY	16
@@ -402,7 +402,7 @@ typedef struct drm_radeon_init {
 	unsigned long sarea_priv_offset;
 	int is_pci;
 	int cp_mode;
-	int agp_size;
+	int gart_size;
 	int ring_size;
 	int usec_timeout;
 
@@ -417,7 +417,7 @@ typedef struct drm_radeon_init {
 	unsigned long ring_offset;
 	unsigned long ring_rptr_offset;
 	unsigned long buffers_offset;
-	unsigned long agp_textures_offset;
+	unsigned long gart_textures_offset;
 } drm_radeon_init_t;
 
 typedef struct drm_radeon_cp_stop {
@@ -527,18 +527,18 @@ typedef struct drm_radeon_indirect {
 /* 1.3: An ioctl to get parameters that aren't available to the 3d
  * client any other way.  
  */
-#define RADEON_PARAM_AGP_BUFFER_OFFSET     1 /* card offset of 1st agp buffer */
+#define RADEON_PARAM_GART_BUFFER_OFFSET    1 /* card offset of 1st GART buffer */
 #define RADEON_PARAM_LAST_FRAME            2
 #define RADEON_PARAM_LAST_DISPATCH         3
 #define RADEON_PARAM_LAST_CLEAR            4
 /* Added with DRM version 1.6. */
 #define RADEON_PARAM_IRQ_NR                5
-#define RADEON_PARAM_AGP_BASE              6 /* card offset of agp base */
+#define RADEON_PARAM_GART_BASE             6 /* card offset of GART base */
 /* Added with DRM version 1.8. */
 #define RADEON_PARAM_REGISTER_HANDLE       7 /* for drmMap() */
 #define RADEON_PARAM_STATUS_HANDLE         8
 #define RADEON_PARAM_SAREA_HANDLE          9
-#define RADEON_PARAM_AGP_TEX_HANDLE        10
+#define RADEON_PARAM_GART_TEX_HANDLE       10
 
 typedef struct drm_radeon_getparam {
 	int param;
@@ -547,14 +547,14 @@ typedef struct drm_radeon_getparam {
 
 /* 1.6: Set up a memory manager for regions of shared memory:
  */
-#define RADEON_MEM_REGION_AGP 1
-#define RADEON_MEM_REGION_FB  2
+#define RADEON_MEM_REGION_GART 1
+#define RADEON_MEM_REGION_FB   2
 
 typedef struct drm_radeon_mem_alloc {
 	int region;
 	int alignment;
 	int size;
-	int *region_offset;	/* offset from start of fb or agp */
+	int *region_offset;	/* offset from start of fb or GART */
 } drm_radeon_mem_alloc_t;
 
 typedef struct drm_radeon_mem_free {
diff --git a/sys/dev/drm/radeon_drv.c b/sys/dev/drm/radeon_drv.c
index 115dab5..c8f23c4 100644
--- a/sys/dev/drm/radeon_drv.c
+++ b/sys/dev/drm/radeon_drv.c
@@ -40,7 +40,6 @@
 
 drm_chipinfo_t DRM(devicelist)[] = {
 	{0x1002, 0x4242, 1, "ATI Radeon BB R200 AIW 8500DV"},
-	{0x1002, 0x4336, 1, "ATI Radeon Mobility U1"},
 	{0x1002, 0x4964, 1, "ATI Radeon Id R250 9000"},
 	{0x1002, 0x4965, 1, "ATI Radeon Ie R250 9000"},
 	{0x1002, 0x4966, 1, "ATI Radeon If R250 9000"},
@@ -57,7 +56,7 @@ drm_chipinfo_t DRM(devicelist)[] = {
 	{0x1002, 0x5145, 1, "ATI Radeon QE R100"},
 	{0x1002, 0x5146, 1, "ATI Radeon QF R100"},
 	{0x1002, 0x5147, 1, "ATI Radeon QG R100"},
-	{0x1002, 0x5148, 1, "ATI Radeon QH FireGL 8x00"},
+	{0x1002, 0x5148, 1, "ATI Radeon QH R200 8500"},
 	{0x1002, 0x5149, 1, "ATI Radeon QI R200"},
 	{0x1002, 0x514A, 1, "ATI Radeon QJ R200"},
 	{0x1002, 0x514B, 1, "ATI Radeon QK R200"},
@@ -67,13 +66,14 @@ drm_chipinfo_t DRM(devicelist)[] = {
 	{0x1002, 0x514F, 1, "ATI Radeon QO R200 8500 LE"},
 	{0x1002, 0x5157, 1, "ATI Radeon QW RV200 7500"},
 	{0x1002, 0x5158, 1, "ATI Radeon QX RV200 7500"},
-	{0x1002, 0x5159, 1, "ATI Radeon QY RV100 VE"},
-	{0x1002, 0x515A, 1, "ATI Radeon QZ RV100 VE"},
+	{0x1002, 0x5159, 1, "ATI Radeon QY RV100 7000/VE"},
+	{0x1002, 0x515A, 1, "ATI Radeon QZ RV100 7000/VE"},
 	{0x1002, 0x5168, 1, "ATI Radeon Qh R200"},
 	{0x1002, 0x5169, 1, "ATI Radeon Qi R200"},
 	{0x1002, 0x516A, 1, "ATI Radeon Qj R200"},
 	{0x1002, 0x516B, 1, "ATI Radeon Qk R200"},
 	{0x1002, 0x516C, 1, "ATI Radeon Ql R200"},
+	{0x1002, 0x5961, 1, "ATI Radeon RV280 9200"},
 	{0, 0, 0, NULL}
 };
 
diff --git a/sys/dev/drm/radeon_drv.h b/sys/dev/drm/radeon_drv.h
index e23ec0f..1e9d2af 100644
--- a/sys/dev/drm/radeon_drv.h
+++ b/sys/dev/drm/radeon_drv.h
@@ -75,9 +75,9 @@ typedef struct drm_radeon_private {
 	drm_radeon_ring_buffer_t ring;
 	drm_radeon_sarea_t *sarea_priv;
 
-	int agp_size;
-	u32 agp_vm_start;
-	unsigned long agp_buffers_offset;
+	int gart_size;
+	u32 gart_vm_start;
+	unsigned long gart_buffers_offset;
 
 	int cp_mode;
 	int cp_running;
@@ -132,7 +132,7 @@ typedef struct drm_radeon_private {
 	unsigned long ring_offset;
 	unsigned long ring_rptr_offset;
 	unsigned long buffers_offset;
-	unsigned long agp_textures_offset;
+	unsigned long gart_textures_offset;
 
 	drm_local_map_t *sarea;
 	drm_local_map_t *fb;
@@ -140,9 +140,9 @@ typedef struct drm_radeon_private {
 	drm_local_map_t *cp_ring;
 	drm_local_map_t *ring_rptr;
 	drm_local_map_t *buffers;
-	drm_local_map_t *agp_textures;
+	drm_local_map_t *gart_textures;
 
-	struct mem_block *agp_heap;
+	struct mem_block *gart_heap;
 	struct mem_block *fb_heap;
 
 	/* SW interrupt */
diff --git a/sys/dev/drm/radeon_mem.c b/sys/dev/drm/radeon_mem.c
index 62d57fd..ed72dd6 100644
--- a/sys/dev/drm/radeon_mem.c
+++ b/sys/dev/drm/radeon_mem.c
@@ -1,4 +1,4 @@
-/* radeon_mem.c -- Simple agp/fb memory manager for radeon -*- linux-c -*-
+/* radeon_mem.c -- Simple GART/fb memory manager for radeon -*- linux-c -*-
  *
  * Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
  * 
@@ -39,7 +39,7 @@ __FBSDID("$FreeBSD$");
 #include "dev/drm/radeon_drm.h"
 #include "dev/drm/radeon_drv.h"
 
-/* Very simple allocator for agp memory, working on a static range
+/* Very simple allocator for GART memory, working on a static range
  * already mapped into each client's address space.  
  */
 
@@ -216,8 +216,8 @@ static struct mem_block **get_heap( drm_radeon_private_t *dev_priv,
 				   int region )
 {
 	switch( region ) {
-	case RADEON_MEM_REGION_AGP:
- 		return &dev_priv->agp_heap; 
+	case RADEON_MEM_REGION_GART:
+ 		return &dev_priv->gart_heap; 
 	case RADEON_MEM_REGION_FB:
 		return &dev_priv->fb_heap;
 	default:
diff --git a/sys/dev/drm/radeon_state.c b/sys/dev/drm/radeon_state.c
index 235fa17..cbeeedd 100644
--- a/sys/dev/drm/radeon_state.c
+++ b/sys/dev/drm/radeon_state.c
@@ -895,7 +895,7 @@ static void radeon_cp_dispatch_vertex( drm_device_t *dev,
 {
 	drm_radeon_private_t *dev_priv = dev->dev_private;
 	drm_radeon_sarea_t *sarea_priv = dev_priv->sarea_priv;
-	int offset = dev_priv->agp_buffers_offset + buf->offset + prim->start;
+	int offset = dev_priv->gart_buffers_offset + buf->offset + prim->start;
 	int numverts = (int)prim->numverts;
 	int nbox = sarea_priv->nbox;
 	int i = 0;
@@ -968,7 +968,7 @@ static void radeon_cp_dispatch_indirect( drm_device_t *dev,
 		   buf->idx, start, end );
 
 	if ( start != end ) {
-		int offset = (dev_priv->agp_buffers_offset
+		int offset = (dev_priv->gart_buffers_offset
 			      + buf->offset + start);
 		int dwords = (end - start + 3) / sizeof(u32);
 
@@ -1001,7 +1001,7 @@ static void radeon_cp_dispatch_indices( drm_device_t *dev,
 {
 	drm_radeon_private_t *dev_priv = dev->dev_private;
 	drm_radeon_sarea_t *sarea_priv = dev_priv->sarea_priv;
-	int offset = dev_priv->agp_buffers_offset + prim->offset;
+	int offset = dev_priv->gart_buffers_offset + prim->offset;
 	u32 *data;
 	int dwords;
 	int i = 0;
@@ -2161,8 +2161,8 @@ int radeon_cp_getparam( DRM_IOCTL_ARGS )
 	DRM_DEBUG( "pid=%d\n", DRM_CURRENTPID );
 
 	switch( param.param ) {
-	case RADEON_PARAM_AGP_BUFFER_OFFSET:
-		value = dev_priv->agp_buffers_offset;
+	case RADEON_PARAM_GART_BUFFER_OFFSET:
+		value = dev_priv->gart_buffers_offset;
 		break;
 	case RADEON_PARAM_LAST_FRAME:
 		dev_priv->stats.last_frame_reads++;
@@ -2178,8 +2178,8 @@ int radeon_cp_getparam( DRM_IOCTL_ARGS )
 	case RADEON_PARAM_IRQ_NR:
 		value = dev->irq;
 		break;
-	case RADEON_PARAM_AGP_BASE:
-		value = dev_priv->agp_vm_start;
+	case RADEON_PARAM_GART_BASE:
+		value = dev_priv->gart_vm_start;
 		break;
 	case RADEON_PARAM_REGISTER_HANDLE:
 		value = dev_priv->mmio_offset;
@@ -2191,8 +2191,8 @@ int radeon_cp_getparam( DRM_IOCTL_ARGS )
 		/* The lock is the first dword in the sarea. */
 		value = (int)dev->lock.hw_lock; 
 		break;	
-	case RADEON_PARAM_AGP_TEX_HANDLE:
-		value = dev_priv->agp_textures_offset;
+	case RADEON_PARAM_GART_TEX_HANDLE:
+		value = dev_priv->gart_textures_offset;
 		break;
 	default:
 		return DRM_ERR(EINVAL);
diff --git a/sys/dev/drm/sis.h b/sys/dev/drm/sis.h
new file mode 100644
index 0000000..23fc413
--- /dev/null
+++ b/sys/dev/drm/sis.h
@@ -0,0 +1,79 @@
+/* sis_drv.h -- Private header for sis driver -*- linux-c -*-
+ *
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ * 
+ * $FreeBSD$
+ */
+/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/sis.h,v 1.3 2002/10/30 12:52:38 alanh Exp $ */
+
+#ifndef __SIS_H__
+#define __SIS_H__
+
+/* This remains constant for all DRM template files.
+ * Name it sisdrv_##x as there's a conflict with sis_free/malloc in the kernel
+ * that's used for fb devices 
+ */
+#ifdef __linux__
+#define DRM(x) sisdrv_##x
+#else
+#define DRM(x) sis_##x
+#endif
+
+/* General customization:
+ */
+#define __HAVE_AGP		1
+#define __MUST_HAVE_AGP		0
+#define __HAVE_MTRR		1
+#define __HAVE_CTX_BITMAP	1
+
+#define DRIVER_AUTHOR		"SIS"
+#define DRIVER_NAME		"sis"
+#define DRIVER_DESC		"SIS 300/630/540"
+#define DRIVER_DATE		"20030826"
+#define DRIVER_MAJOR		1
+#define DRIVER_MINOR		1
+#define DRIVER_PATCHLEVEL	0
+
+#define DRIVER_IOCTLS \
+	[DRM_IOCTL_NR(DRM_IOCTL_SIS_FB_ALLOC)]  = { sis_fb_alloc,	1, 0 }, \
+	[DRM_IOCTL_NR(DRM_IOCTL_SIS_FB_FREE)]   = { sis_fb_free,	1, 0 }, \
+	[DRM_IOCTL_NR(DRM_IOCTL_SIS_AGP_INIT)]  = { sis_ioctl_agp_init,	1, 1 }, \
+	[DRM_IOCTL_NR(DRM_IOCTL_SIS_AGP_ALLOC)] = { sis_ioctl_agp_alloc, 1, 0 }, \
+	[DRM_IOCTL_NR(DRM_IOCTL_SIS_AGP_FREE)]	= { sis_ioctl_agp_free,	1, 0 }, \
+	[DRM_IOCTL_NR(DRM_IOCTL_SIS_FB_INIT)]	= { sis_fb_init,	1, 1 }
+
+#define __HAVE_COUNTERS		5
+
+/* Buffer customization:
+ */
+#define DRIVER_AGP_BUFFERS_MAP( dev )					\
+	((drm_sis_private_t *)((dev)->dev_private))->buffers
+
+extern int sis_init_context(int context);
+extern int sis_final_context(int context);
+
+#define DRIVER_CTX_CTOR sis_init_context
+#define DRIVER_CTX_DTOR sis_final_context
+
+#endif
diff --git a/sys/dev/drm/sis_drm.h b/sys/dev/drm/sis_drm.h
new file mode 100644
index 0000000..18711a5
--- /dev/null
+++ b/sys/dev/drm/sis_drm.h
@@ -0,0 +1,36 @@
+/*
+ * $FreeBSD$
+ */
+
+#ifndef __SIS_DRM_H__
+#define __SIS_DRM_H__
+
+/* SiS specific ioctls */
+#define DRM_IOCTL_SIS_FB_ALLOC		DRM_IOWR(0x44, drm_sis_mem_t)
+#define DRM_IOCTL_SIS_FB_FREE		DRM_IOW( 0x45, drm_sis_mem_t)
+#define DRM_IOCTL_SIS_AGP_INIT		DRM_IOWR(0x53, drm_sis_agp_t)
+#define DRM_IOCTL_SIS_AGP_ALLOC		DRM_IOWR(0x54, drm_sis_mem_t)
+#define DRM_IOCTL_SIS_AGP_FREE		DRM_IOW( 0x55, drm_sis_mem_t)
+#define DRM_IOCTL_SIS_FB_INIT		DRM_IOW( 0x56, drm_sis_fb_t)
+/*
+#define DRM_IOCTL_SIS_FLIP		DRM_IOW( 0x48, drm_sis_flip_t)
+#define DRM_IOCTL_SIS_FLIP_INIT		DRM_IO(  0x49)
+#define DRM_IOCTL_SIS_FLIP_FINAL	DRM_IO(  0x50)
+*/
+
+typedef struct {
+	int context;
+	unsigned int offset;
+	unsigned int size;
+	unsigned long free;
+} drm_sis_mem_t;
+
+typedef struct {
+	unsigned int offset, size;
+} drm_sis_agp_t;
+
+typedef struct {
+	unsigned int offset, size;
+} drm_sis_fb_t;
+
+#endif /* __SIS_DRM_H__ */
diff --git a/sys/dev/drm/sis_drv.c b/sys/dev/drm/sis_drv.c
new file mode 100644
index 0000000..fdf0f16
--- /dev/null
+++ b/sys/dev/drm/sis_drv.c
@@ -0,0 +1,60 @@
+/* sis.c -- sis driver -*- linux-c -*-
+ *
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * $FreeBSD$
+ */
+
+#include "dev/drm/sis.h"
+#include "dev/drm/drmP.h"
+#include "dev/drm/sis_drm.h"
+#include "dev/drm/sis_drv.h"
+
+drm_chipinfo_t DRM(devicelist)[] = {
+	{0x1039, 0x0300, 1, "SiS 300"},
+	{0x1039, 0x5300, 1, "SiS 540"},
+	{0x1039, 0x6300, 1, "SiS 630"},
+	{0, 0, 0, NULL}
+};
+
+#include "dev/drm/drm_auth.h"
+#include "dev/drm/drm_agpsupport.h"
+#include "dev/drm/drm_bufs.h"
+#include "dev/drm/drm_context.h"
+#include "dev/drm/drm_dma.h"
+#include "dev/drm/drm_drawable.h"
+#include "dev/drm/drm_drv.h"
+#include "dev/drm/drm_fops.h"
+#include "dev/drm/drm_ioctl.h"
+#include "dev/drm/drm_lock.h"
+#include "dev/drm/drm_memory.h"
+#include "dev/drm/drm_vm.h"
+#include "dev/drm/drm_sysctl.h"
+
+#ifdef __FreeBSD__
+/* Avoid clash with sis ethernet */
+DRIVER_MODULE(sisdrm, pci, sis_driver, sis_devclass, 0, 0);
+#elif defined(__NetBSD__)
+CFDRIVER_DECL(sis, DV_TTY, NULL);
+#endif /* __FreeBSD__ */
diff --git a/sys/dev/drm/sis_drv.h b/sys/dev/drm/sis_drv.h
new file mode 100644
index 0000000..3f80901
--- /dev/null
+++ b/sys/dev/drm/sis_drv.h
@@ -0,0 +1,48 @@
+/* sis_drv.h -- Private header for sis driver -*- linux-c -*-
+ *
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ * 
+ * $FreeBSD$
+ */
+
+#ifndef _SIS_DRV_H_
+#define _SIS_DRV_H_
+
+#include "dev/drm/sis_ds.h"
+
+typedef struct drm_sis_private {
+	drm_map_t *buffers;
+
+	memHeap_t *AGPHeap;
+	memHeap_t *FBHeap;
+} drm_sis_private_t;
+
+extern int sis_fb_alloc( DRM_IOCTL_ARGS );
+extern int sis_fb_free( DRM_IOCTL_ARGS );
+extern int sis_ioctl_agp_init( DRM_IOCTL_ARGS );
+extern int sis_ioctl_agp_alloc( DRM_IOCTL_ARGS );
+extern int sis_ioctl_agp_free( DRM_IOCTL_ARGS );
+extern int sis_fb_init( DRM_IOCTL_ARGS );
+
+#endif
diff --git a/sys/dev/drm/sis_ds.c b/sys/dev/drm/sis_ds.c
new file mode 100644
index 0000000..74b111e
--- /dev/null
+++ b/sys/dev/drm/sis_ds.c
@@ -0,0 +1,387 @@
+/* sis_ds.c -- Private header for Direct Rendering Manager -*- linux-c -*-
+ * Created: Mon Jan  4 10:05:05 1999 by sclin@sis.com.tw
+ *
+ * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ * 
+ * Authors:
+ *    Sung-Ching Lin <sclin@sis.com.tw>
+ * 
+ * $FreeBSD$
+ */
+
+#include "dev/drm/sis.h"
+#include "dev/drm/drmP.h"
+#include "dev/drm/drm.h"
+#include "dev/drm/sis_ds.h"
+
+/* Set Data Structure, not check repeated value
+ * temporarily used
+ */
+
+set_t *setInit(void)
+{
+	int i;
+	set_t *set;
+
+	set = (set_t *)DRM(alloc)(sizeof(set_t), DRM_MEM_DRIVER);
+	if (set != NULL) {
+		for (i = 0; i < SET_SIZE; i++) {
+			set->list[i].free_next = i + 1;    
+			set->list[i].alloc_next = -1;
+		}
+		set->list[SET_SIZE-1].free_next = -1;
+		set->free = 0;
+		set->alloc = -1;
+		set->trace = -1;
+	}
+	return set;
+}
+
+int setAdd(set_t *set, ITEM_TYPE item)
+{
+	int free = set->free;
+  
+	if (free != -1) {
+		set->list[free].val = item;
+		set->free = set->list[free].free_next;
+	} else {
+		return 0;
+	}
+
+	set->list[free].alloc_next = set->alloc;
+	set->alloc = free;  
+	set->list[free].free_next = -1;    
+
+	return 1;
+}
+
+int setDel(set_t *set, ITEM_TYPE item)
+{
+	int alloc = set->alloc;
+	int prev = -1;  
+
+	while (alloc != -1) {
+		if (set->list[alloc].val == item) {
+			if (prev != -1)
+				set->list[prev].alloc_next =
+				    set->list[alloc].alloc_next;
+			else
+				set->alloc = set->list[alloc].alloc_next;
+			break;
+		}
+		prev = alloc;
+		alloc = set->list[alloc].alloc_next;
+	}
+
+	if (alloc == -1)
+		return 0;
+
+	set->list[alloc].free_next = set->free;
+	set->free = alloc;
+	set->list[alloc].alloc_next = -1;
+
+	return 1;
+}
+
+/* setFirst -> setAdd -> setNext is wrong */
+
+int setFirst(set_t *set, ITEM_TYPE *item)
+{
+	if (set->alloc == -1)
+		return 0;
+
+	*item = set->list[set->alloc].val;
+	set->trace = set->list[set->alloc].alloc_next;
+
+	return 1;
+}
+
+int setNext(set_t *set, ITEM_TYPE *item)
+{
+	if (set->trace == -1)
+		return 0;
+
+	*item = set->list[set->trace].val;
+	set->trace = set->list[set->trace].alloc_next;
+
+	return 1;
+}
+
+int setDestroy(set_t *set)
+{
+	DRM(free)(set, sizeof(set_t), DRM_MEM_DRIVER);
+
+	return 1;
+}
+
+/*
+ * GLX Hardware Device Driver common code
+ * Copyright (C) 1999 Keith Whitwell
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, 
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#define ISFREE(bptr) ((bptr)->free)
+
+memHeap_t *mmInit(int ofs,
+		  int size)
+{
+	PMemBlock blocks;
+
+	if (size <= 0)
+		return 0;
+
+	blocks = (TMemBlock *)DRM(calloc)(1, sizeof(TMemBlock), DRM_MEM_DRIVER);
+	if (blocks != NULL) {
+		blocks->ofs = ofs;
+		blocks->size = size;
+		blocks->free = 1;
+		return (memHeap_t *)blocks;
+	} else
+		return 0;
+}
+
+/* Checks if a pointer 'b' is part of the heap 'heap' */
+int mmBlockInHeap(memHeap_t *heap, PMemBlock b)
+{
+	TMemBlock *p;
+
+	if (heap == NULL || b == NULL)
+		return 0;
+
+	p = heap;
+	while (p != NULL && p != b) {
+		p = p->next;
+	}
+	if (p == b)
+		return 1;
+	else
+		return 0;
+}
+
+/* Kludgey workaround for existing i810 server.  Remove soon.
+ */
+memHeap_t *mmAddRange( memHeap_t *heap,
+		       int ofs,
+		       int size )
+{
+	PMemBlock blocks;
+	blocks = (TMemBlock *)DRM(calloc)(2, sizeof(TMemBlock), DRM_MEM_DRIVER);
+	if (blocks != NULL) {
+		blocks[0].size = size;
+		blocks[0].free = 1;
+		blocks[0].ofs = ofs;
+		blocks[0].next = &blocks[1];
+
+		/* Discontinuity - stops JoinBlock from trying to join
+		 * non-adjacent ranges.
+		 */
+		blocks[1].size = 0;
+		blocks[1].free = 0;
+		blocks[1].ofs = ofs+size;
+		blocks[1].next = (PMemBlock)heap;
+		return (memHeap_t *)blocks;
+	} else
+		return heap;
+}
+
+static TMemBlock* SliceBlock(TMemBlock *p, 
+			     int startofs, int size, 
+			     int reserved, int alignment)
+{
+	TMemBlock *newblock;
+
+	/* break left */
+	if (startofs > p->ofs) {
+		newblock = (TMemBlock*) DRM(calloc)(1, sizeof(TMemBlock),
+		    DRM_MEM_DRIVER);
+		newblock->ofs = startofs;
+		newblock->size = p->size - (startofs - p->ofs);
+		newblock->free = 1;
+		newblock->next = p->next;
+		p->size -= newblock->size;
+		p->next = newblock;
+		p = newblock;
+	}
+
+	/* break right */
+	if (size < p->size) {
+		newblock = (TMemBlock*) DRM(calloc)(1, sizeof(TMemBlock),
+		    DRM_MEM_DRIVER);
+		newblock->ofs = startofs + size;
+		newblock->size = p->size - size;
+		newblock->free = 1;
+		newblock->next = p->next;
+		p->size = size;
+		p->next = newblock;
+	}
+
+	/* p = middle block */
+	p->align = alignment;
+	p->free = 0;
+	p->reserved = reserved;
+	return p;
+}
+
+PMemBlock mmAllocMem( memHeap_t *heap, int size, int align2, int startSearch)
+{
+	int mask,startofs, endofs;
+	TMemBlock *p;
+	
+	if (heap == NULL || align2 < 0 || size <= 0)
+		return NULL;
+
+	mask = (1 << align2)-1;
+	startofs = 0;
+	p = (TMemBlock *)heap;
+	while (p != NULL) {
+		if (ISFREE(p)) {
+			startofs = (p->ofs + mask) & ~mask;
+			if ( startofs < startSearch ) {
+				startofs = startSearch;
+			}
+			endofs = startofs+size;
+			if (endofs <= (p->ofs+p->size))
+				break;
+		}
+		p = p->next;
+	}
+	if (p == NULL)
+		return NULL;
+	p = SliceBlock(p,startofs,size,0,mask+1);
+	p->heap = heap;
+	return p;
+}
+
+static __inline__ int Join2Blocks(TMemBlock *p)
+{
+	if (p->free && p->next && p->next->free) {
+		TMemBlock *q = p->next;
+		p->size += q->size;
+		p->next = q->next;
+		DRM(free)(q, sizeof(TMemBlock), DRM_MEM_DRIVER);
+		return 1;
+	}
+	return 0;
+}
+
+int mmFreeMem(PMemBlock b)
+{
+	TMemBlock *p, *prev;
+
+	if (b == NULL)
+		return 0;
+	if (b->heap == NULL)
+		return -1;
+
+	p = b->heap;
+	prev = NULL;
+	while (p != NULL && p != b) {
+		prev = p;
+		p = p->next;
+	}
+	if (p == NULL || p->free || p->reserved)
+		return -1;
+
+	p->free = 1;
+	Join2Blocks(p);
+	if (prev)
+	Join2Blocks(prev);
+	return 0;
+}
+
+int mmReserveMem(memHeap_t *heap, int offset,int size)
+{
+	int endofs;
+	TMemBlock *p;
+
+	if (heap == NULL || size <= 0)
+		return -1;
+
+	endofs = offset + size;
+	p = (TMemBlock *)heap;
+	while (p && p->ofs <= offset) {
+		if (ISFREE(p) && endofs <= (p->ofs+p->size)) {
+			SliceBlock(p,offset,size,1,1);
+			return 0;
+		}
+		p = p->next;
+	}
+	return -1;
+}
+
+int mmFreeReserved(memHeap_t *heap, int offset)
+{
+	TMemBlock *p,*prev;
+
+	if (heap == NULL)
+		return -1;
+
+	p = (TMemBlock *)heap;
+	prev = NULL;
+	while (p != NULL && p->ofs != offset) {
+		prev = p;
+		p = p->next;
+	}
+	if (p == NULL || !p->reserved)
+		return -1;
+
+	p->free = 1;
+	p->reserved = 0;
+	Join2Blocks(p);
+	if (prev != NULL)
+		Join2Blocks(prev);
+	return 0;
+}
+
+void mmDestroy(memHeap_t *heap)
+{
+	TMemBlock *p,*q;
+
+	if (heap == NULL)
+		return;
+
+	p = (TMemBlock *)heap;
+	while (p != NULL) {
+		q = p->next;
+		DRM(free)(p, sizeof(TMemBlock), DRM_MEM_DRIVER);
+		p = q;
+	}
+}
diff --git a/sys/dev/drm/sis_ds.h b/sys/dev/drm/sis_ds.h
new file mode 100644
index 0000000..c57e132
--- /dev/null
+++ b/sys/dev/drm/sis_ds.h
@@ -0,0 +1,165 @@
+/* sis_ds.h -- Private header for Direct Rendering Manager -*- linux-c -*-
+ * Created: Mon Jan  4 10:05:05 1999 by sclin@sis.com.tw
+ *
+ * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ * 
+ * Authors:
+ *    Sung-Ching Lin <sclin@sis.com.tw>
+ * 
+ * $FreeBSD$
+ */
+
+#ifndef __SIS_DS_H__
+#define __SIS_DS_H__
+
+/* Set Data Structure */
+
+#define SET_SIZE 5000
+
+typedef unsigned int ITEM_TYPE;
+
+typedef struct {
+	ITEM_TYPE val;
+	int alloc_next, free_next;
+} list_item_t;
+
+typedef struct {
+	int alloc;
+	int free;
+	int trace;
+	list_item_t list[SET_SIZE];
+} set_t;
+
+set_t *setInit(void);
+int setAdd(set_t *set, ITEM_TYPE item);
+int setDel(set_t *set, ITEM_TYPE item);
+int setFirst(set_t *set, ITEM_TYPE *item);
+int setNext(set_t *set, ITEM_TYPE *item);
+int setDestroy(set_t *set);
+
+/*
+ * GLX Hardware Device Driver common code
+ * Copyright (C) 1999 Keith Whitwell
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, 
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+struct mem_block_t {
+	struct mem_block_t *next;
+	struct mem_block_t *heap;
+	int ofs,size;
+	int align;
+	int free:1;
+	int reserved:1;
+};
+typedef struct mem_block_t TMemBlock;
+typedef struct mem_block_t *PMemBlock;
+
+/* a heap is just the first block in a chain */
+typedef struct mem_block_t memHeap_t;
+
+static __inline__ int mmBlockSize(PMemBlock b)
+{
+	return b->size;
+}
+
+static __inline__ int mmOffset(PMemBlock b)
+{
+	return b->ofs;
+}
+
+static __inline__ void mmMarkReserved(PMemBlock b)
+{
+	b->reserved = 1;
+}
+
+/* 
+ * input: total size in bytes
+ * return: a heap pointer if OK, NULL if error
+ */
+memHeap_t *mmInit( int ofs, int size );
+
+memHeap_t *mmAddRange( memHeap_t *heap,
+		       int ofs,
+		       int size );
+
+/*
+ * Allocate 'size' bytes with 2^align2 bytes alignment,
+ * restrict the search to free memory after 'startSearch'
+ * depth and back buffers should be in different 4mb banks
+ * to get better page hits if possible
+ * input:	size = size of block
+ *       	align2 = 2^align2 bytes alignment
+ *		startSearch = linear offset from start of heap to begin search
+ * return: pointer to the allocated block, 0 if error
+ */
+PMemBlock mmAllocMem( memHeap_t *heap, int size, int align2, int startSearch );
+
+/*
+ * Returns 1 if the block 'b' is part of the heap 'heap'
+ */
+int mmBlockInHeap( PMemBlock heap, PMemBlock b );
+
+/*
+ * Free block starts at offset
+ * input: pointer to a block
+ * return: 0 if OK, -1 if error
+ */
+int mmFreeMem( PMemBlock b );
+
+/*
+ * Reserve 'size' bytes block start at offset
+ * This is used to prevent allocation of memory already used
+ * by the X server for the front buffer, pixmaps, and cursor
+ * input: size, offset
+ * output: 0 if OK, -1 if error
+ */
+int mmReserveMem( memHeap_t *heap, int offset,int size );
+int mmFreeReserved( memHeap_t *heap, int offset );
+
+/*
+ * destroy MM
+ */
+void mmDestroy( memHeap_t *mmInit );
+
+/* For debuging purpose. */
+void mmDumpMemInfo( memHeap_t *mmInit );
+
+#endif /* __SIS_DS_H__ */
diff --git a/sys/dev/drm/sis_mm.c b/sys/dev/drm/sis_mm.c
new file mode 100644
index 0000000..7065b95
--- /dev/null
+++ b/sys/dev/drm/sis_mm.c
@@ -0,0 +1,404 @@
+/* sis_mm.c -- Private header for Direct Rendering Manager -*- linux-c -*-
+ * Created: Mon Jan  4 10:05:05 1999 by sclin@sis.com.tw
+ *
+ * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ * 
+ * Authors:
+ *    Sung-Ching Lin <sclin@sis.com.tw>
+ * 
+ * $FreeBSD$
+ */
+
+#include "dev/drm/sis.h"
+#include "dev/drm/drmP.h"
+#include "dev/drm/sis_drm.h"
+#include "dev/drm/sis_drv.h"
+#include "dev/drm/sis_ds.h"
+#if defined(__linux__) && defined(CONFIG_FB_SIS)
+#include <linux/sisfb.h>
+#endif
+
+#define MAX_CONTEXT 100
+#define VIDEO_TYPE 0 
+#define AGP_TYPE 1
+
+typedef struct {
+	int used;
+	int context;
+	set_t *sets[2]; /* 0 for video, 1 for AGP */
+} sis_context_t;
+
+static sis_context_t global_ppriv[MAX_CONTEXT];
+
+
+static int add_alloc_set(int context, int type, unsigned int val)
+{
+	int i, retval = 0;
+	
+	for (i = 0; i < MAX_CONTEXT; i++) {
+		if (global_ppriv[i].used && global_ppriv[i].context == context)
+		{
+			retval = setAdd(global_ppriv[i].sets[type], val);
+			break;
+		}
+	}
+	return retval;
+}
+
+static int del_alloc_set(int context, int type, unsigned int val)
+{  
+	int i, retval = 0;
+
+	for (i = 0; i < MAX_CONTEXT; i++) {
+		if (global_ppriv[i].used && global_ppriv[i].context == context)
+		{
+			retval = setDel(global_ppriv[i].sets[type], val);
+			break;
+		}
+	}
+	return retval;
+}
+
+/* fb management via fb device */ 
+#if defined(__linux__) && defined(CONFIG_FB_SIS)
+
+int sis_fb_init( DRM_IOCTL_ARGS )
+{
+	return 0;
+}
+
+int sis_fb_alloc( DRM_IOCTL_ARGS )
+{
+	drm_sis_mem_t fb;
+	struct sis_memreq req;
+	int retval = 0;
+
+	DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t *)data, sizeof(fb));
+
+	req.size = fb.size;
+	sis_malloc(&req);
+	if (req.offset) {
+		/* TODO */
+		fb.offset = req.offset;
+		fb.free = req.offset;
+		if (!add_alloc_set(fb.context, VIDEO_TYPE, fb.free)) {
+			DRM_DEBUG("adding to allocation set fails\n");
+			sis_free(req.offset);
+			retval = DRM_ERR(EINVAL);
+		}
+	} else {  
+		fb.offset = 0;
+		fb.size = 0;
+		fb.free = 0;
+	}
+
+	DRM_COPY_TO_USER_IOCTL((drm_sis_mem_t *)data, fb, sizeof(fb));
+
+	DRM_DEBUG("alloc fb, size = %d, offset = %ld\n", fb.size, req.offset);
+
+	return retval;
+}
+
+int sis_fb_free( DRM_IOCTL_ARGS )
+{
+	drm_sis_mem_t fb;
+	int retval = 0;
+
+	DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t *)data, sizeof(fb));
+
+	if (!fb.free)
+		return DRM_ERR(EINVAL);
+
+	if (!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
+		retval = DRM_ERR(EINVAL);
+	sis_free(fb.free);
+
+	DRM_DEBUG("free fb, offset = %d\n", fb.free);
+
+	return retval;
+}
+
+#else
+
+/* Called by the X Server to initialize the FB heap.  Allocations will fail
+ * unless this is called.  Offset is the beginning of the heap from the
+ * framebuffer offset (MaxXFBMem in XFree86).
+ *
+ * Memory layout according to Thomas Winischofer:
+ * |------------------|DDDDDDDDDDDDDDDDDDDDDDDDDDDDD|HHHH|CCCCCCCCCCC|
+ *
+ *    X driver/sisfb                                  HW-   Command-
+ *  framebuffer memory           DRI heap           Cursor   queue
+ */
+int sis_fb_init( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_fb_t fb;
+
+	DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_fb_t *)data, sizeof(fb));
+
+	if (dev_priv == NULL) {
+		dev->dev_private = DRM(calloc)(1, sizeof(drm_sis_private_t),
+		    DRM_MEM_DRIVER);
+		dev_priv = dev->dev_private;
+		if (dev_priv == NULL)
+			return ENOMEM;
+	}
+
+	if (dev_priv->FBHeap != NULL)
+		return DRM_ERR(EINVAL);
+
+	dev_priv->FBHeap = mmInit(fb.offset, fb.size);
+
+	DRM_DEBUG("offset = %u, size = %u", fb.offset, fb.size);
+
+	return 0;
+}
+
+int sis_fb_alloc( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_mem_t fb;
+	PMemBlock block;
+	int retval = 0;
+
+	if (dev_priv == NULL || dev_priv->FBHeap == NULL)
+		return DRM_ERR(EINVAL);
+  
+	DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t *)data, sizeof(fb));
+  
+	block = mmAllocMem(dev_priv->FBHeap, fb.size, 0, 0);
+	if (block) {
+		/* TODO */
+		fb.offset = block->ofs;
+		fb.free = (unsigned long)block;
+		if (!add_alloc_set(fb.context, VIDEO_TYPE, fb.free)) {
+			DRM_DEBUG("adding to allocation set fails\n");
+			mmFreeMem((PMemBlock)fb.free);
+			retval = DRM_ERR(EINVAL);
+		}
+	} else {
+		fb.offset = 0;
+		fb.size = 0;
+		fb.free = 0;
+	}
+
+	DRM_COPY_TO_USER_IOCTL((drm_sis_mem_t *)data, fb, sizeof(fb));
+
+	DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb.size, fb.offset);
+
+	return retval;
+}
+
+int sis_fb_free( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_mem_t fb;
+
+	if (dev_priv == NULL || dev_priv->FBHeap == NULL)
+		return DRM_ERR(EINVAL);
+
+	DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_mem_t *)data, sizeof(fb));
+
+	if (!mmBlockInHeap(dev_priv->FBHeap, (PMemBlock)fb.free))
+		return DRM_ERR(EINVAL);
+
+	if (!del_alloc_set(fb.context, VIDEO_TYPE, fb.free))
+		return DRM_ERR(EINVAL);
+	mmFreeMem((PMemBlock)fb.free);
+
+	DRM_DEBUG("free fb, free = 0x%lx\n", fb.free);
+
+	return 0;
+}
+
+#endif
+
+/* agp memory management */ 
+
+int sis_ioctl_agp_init( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_agp_t agp;
+
+	if (dev_priv == NULL) {
+		dev->dev_private = DRM(calloc)(1, sizeof(drm_sis_private_t),
+		    DRM_MEM_DRIVER);
+		dev_priv = dev->dev_private;
+		if (dev_priv == NULL)
+			return ENOMEM;
+	}
+
+	if (dev_priv->AGPHeap != NULL)
+		return DRM_ERR(EINVAL);
+
+	DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_agp_t *)data, sizeof(agp));
+
+	dev_priv->AGPHeap = mmInit(agp.offset, agp.size);
+
+	DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size);
+  
+	return 0;
+}
+
+int sis_ioctl_agp_alloc( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_mem_t agp;
+	PMemBlock block;
+	int retval = 0;
+   
+	if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
+		return DRM_ERR(EINVAL);
+  
+	DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_mem_t *)data, sizeof(agp));
+  
+	block = mmAllocMem(dev_priv->AGPHeap, agp.size, 0, 0);
+	if (block) {
+		/* TODO */
+		agp.offset = block->ofs;
+		agp.free = (unsigned long)block;
+		if (!add_alloc_set(agp.context, AGP_TYPE, agp.free)) {
+			DRM_DEBUG("adding to allocation set fails\n");
+			mmFreeMem((PMemBlock)agp.free);
+			retval = -1;
+		}
+	} else {  
+		agp.offset = 0;
+		agp.size = 0;
+		agp.free = 0;
+	}
+
+	DRM_COPY_TO_USER_IOCTL((drm_sis_mem_t *)data, agp, sizeof(agp));
+
+	DRM_DEBUG("alloc agp, size = %d, offset = %d\n", agp.size, agp.offset);
+
+	return retval;
+}
+
+int sis_ioctl_agp_free( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_mem_t agp;
+
+	if (dev_priv == NULL || dev_priv->AGPHeap == NULL)
+		return DRM_ERR(EINVAL);
+
+	DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_mem_t *)data, sizeof(agp));
+
+	if (!mmBlockInHeap(dev_priv->AGPHeap, (PMemBlock)agp.free))
+		return DRM_ERR(EINVAL);
+
+	mmFreeMem((PMemBlock)agp.free);
+	if (!del_alloc_set(agp.context, AGP_TYPE, agp.free))
+		return DRM_ERR(EINVAL);
+
+	DRM_DEBUG("free agp, free = 0x%lx\n", agp.free);
+
+	return 0;
+}
+
+int sis_init_context(int context)
+{
+	int i;
+
+	for (i = 0; i < MAX_CONTEXT ; i++) {
+		if (global_ppriv[i].used &&
+		    (global_ppriv[i].context == context))
+			break;
+	}
+
+	if (i >= MAX_CONTEXT) {
+		for (i = 0; i < MAX_CONTEXT ; i++) {
+			if (!global_ppriv[i].used) {
+				global_ppriv[i].context = context;
+				global_ppriv[i].used = 1;
+				global_ppriv[i].sets[0] = setInit();
+				global_ppriv[i].sets[1] = setInit();
+				DRM_DEBUG("init allocation set, socket=%d, "
+				    "context = %d\n", i, context);
+				break;
+			}
+		}
+		if ((i >= MAX_CONTEXT) || (global_ppriv[i].sets[0] == NULL) ||
+		    (global_ppriv[i].sets[1] == NULL))
+		{
+			return 0;
+		}
+	}
+	
+	return 1;
+}
+
+int sis_final_context(int context)
+{
+	int i;
+
+	for (i=0; i<MAX_CONTEXT; i++) {
+		if (global_ppriv[i].used &&
+		    (global_ppriv[i].context == context))
+			break;
+	}
+
+	if (i < MAX_CONTEXT) {
+		set_t *set;
+		unsigned int item;
+		int retval;
+
+		DRM_DEBUG("find socket %d, context = %d\n", i, context);
+
+		/* Video Memory */
+		set = global_ppriv[i].sets[0];
+		retval = setFirst(set, &item);
+		while (retval) {
+			DRM_DEBUG("free video memory 0x%x\n", item);
+#if defined(__linux__) && defined(CONFIG_FB_SIS)
+			sis_free(item);
+#else
+			mmFreeMem((PMemBlock)item);
+#endif
+			retval = setNext(set, &item);
+		}
+		setDestroy(set);
+
+		/* AGP Memory */
+		set = global_ppriv[i].sets[1];
+		retval = setFirst(set, &item);
+		while (retval) {
+			DRM_DEBUG("free agp memory 0x%x\n", item);
+			mmFreeMem((PMemBlock)item);
+			retval = setNext(set, &item);
+		}
+		setDestroy(set);
+
+		global_ppriv[i].used = 0;	  
+        }
+	
+	return 1;
+}