Merge branch 'drm-patches' of master.kernel.org:/pub/scm/linux/kernel/git/airlied/drm-2.6

* 'drm-patches' of master.kernel.org:/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm: ioremap balanced with iounmap for drivers/char/drm
  drm: fix error returns, sysfs error handling
  fix return code in error case.
  drm: mga: set dev_priv_size
  drm: savage: dev->agp_buffer_map is not initialized for AGP DMA on savages
  drm: radeon: only allow specific type-3 packetss through verifier

7 files changed, 180 insertions, 13 deletions

diff --git a/drivers/char/drm/drm_bufs.c b/drivers/char/drm/drm_bufs.c
index 029baea33b62..6eafff13dab6 100644
--- a/drivers/char/drm/drm_bufs.c
+++ b/drivers/char/drm/drm_bufs.c
@@ -237,6 +237,8 @@ static int drm_addmap_core(drm_device_t * dev, unsigned int offset,
 
 	list = drm_alloc(sizeof(*list), DRM_MEM_MAPS);
 	if (!list) {
+		if (map->type == _DRM_REGISTERS)
+			drm_ioremapfree(map->handle, map->size, dev);
 		drm_free(map, sizeof(*map), DRM_MEM_MAPS);
 		return -EINVAL;
 	}
@@ -252,6 +254,8 @@ static int drm_addmap_core(drm_device_t * dev, unsigned int offset,
 		map->offset;
 	ret = drm_map_handle(dev, &list->hash, user_token, 0);
 	if (ret) {
+		if (map->type == _DRM_REGISTERS)
+			drm_ioremapfree(map->handle, map->size, dev);
 		drm_free(map, sizeof(*map), DRM_MEM_MAPS);
 		drm_free(list, sizeof(*list), DRM_MEM_MAPS);
 		mutex_unlock(&dev->struct_mutex);
diff --git a/drivers/char/drm/drm_sysfs.c b/drivers/char/drm/drm_sysfs.c
index 51ad98c685c3..ba4b8de83cf0 100644
--- a/drivers/char/drm/drm_sysfs.c
+++ b/drivers/char/drm/drm_sysfs.c
@@ -42,13 +42,24 @@ static CLASS_ATTR(version, S_IRUGO, version_show, NULL);
 struct class *drm_sysfs_create(struct module *owner, char *name)
 {
 	struct class *class;
+	int err;
 
 	class = class_create(owner, name);
-	if (!class)
-		return class;
+	if (!class) {
+		err = -ENOMEM;
+		goto err_out;
+	}
+
+	err = class_create_file(class, &class_attr_version);
+	if (err)
+		goto err_out_class;
 
-	class_create_file(class, &class_attr_version);
 	return class;
+
+err_out_class:
+	class_destroy(class);
+err_out:
+	return ERR_PTR(err);
 }
 
 /**
@@ -96,20 +107,36 @@ static struct class_device_attribute class_device_attrs[] = {
 struct class_device *drm_sysfs_device_add(struct class *cs, drm_head_t *head)
 {
 	struct class_device *class_dev;
-	int i;
+	int i, j, err;
 
 	class_dev = class_device_create(cs, NULL,
 					MKDEV(DRM_MAJOR, head->minor),
 					&(head->dev->pdev)->dev,
 					"card%d", head->minor);
-	if (!class_dev)
-		return NULL;
+	if (!class_dev) {
+		err = -ENOMEM;
+		goto err_out;
+	}
 
 	class_set_devdata(class_dev, head);
 
-	for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
-		class_device_create_file(class_dev, &class_device_attrs[i]);
+	for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++) {
+		err = class_device_create_file(class_dev,
+					       &class_device_attrs[i]);
+		if (err)
+			goto err_out_files;
+	}
+
 	return class_dev;
+
+err_out_files:
+	if (i > 0)
+		for (j = 0; j < i; j++)
+			class_device_remove_file(class_dev,
+						 &class_device_attrs[i]);
+	class_device_unregister(class_dev);
+err_out:
+	return ERR_PTR(err);
 }
 
 /**
diff --git a/drivers/char/drm/mga_drv.c b/drivers/char/drm/mga_drv.c
index e30f556b79f1..be49dbb9ec3f 100644
--- a/drivers/char/drm/mga_drv.c
+++ b/drivers/char/drm/mga_drv.c
@@ -47,6 +47,7 @@ static struct drm_driver driver = {
 	    DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA |
 	    DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
 	    DRIVER_IRQ_VBL,
+	.dev_priv_size = sizeof(drm_mga_buf_priv_t),
 	.load = mga_driver_load,
 	.unload = mga_driver_unload,
 	.lastclose = mga_driver_lastclose,
diff --git a/drivers/char/drm/r300_cmdbuf.c b/drivers/char/drm/r300_cmdbuf.c
index 26bdf2ca59d7..d14477ba3679 100644
--- a/drivers/char/drm/r300_cmdbuf.c
+++ b/drivers/char/drm/r300_cmdbuf.c
@@ -538,6 +538,36 @@ static __inline__ int r300_emit_bitblt_multi(drm_radeon_private_t *dev_priv,
 	return 0;
 }
 
+static __inline__ int r300_emit_indx_buffer(drm_radeon_private_t *dev_priv,
+					     drm_radeon_kcmd_buffer_t *cmdbuf)
+{
+	u32 *cmd = (u32 *) cmdbuf->buf;
+	int count, ret;
+	RING_LOCALS;
+
+	count=(cmd[0]>>16) & 0x3fff;
+
+	if ((cmd[1] & 0x8000ffff) != 0x80000810) {
+		DRM_ERROR("Invalid indx_buffer reg address %08X\n", cmd[1]);
+		return DRM_ERR(EINVAL);
+	}
+	ret = r300_check_offset(dev_priv, cmd[2]);
+	if (ret) {
+		DRM_ERROR("Invalid indx_buffer offset is %08X\n", cmd[2]);
+		return DRM_ERR(EINVAL);
+	}
+
+	BEGIN_RING(count+2);
+	OUT_RING(cmd[0]);
+	OUT_RING_TABLE((int *)(cmdbuf->buf + 4), count + 1);
+	ADVANCE_RING();
+
+	cmdbuf->buf += (count+2)*4;
+	cmdbuf->bufsz -= (count+2)*4;
+
+	return 0;
+}
+
 static __inline__ int r300_emit_raw_packet3(drm_radeon_private_t *dev_priv,
 					    drm_radeon_kcmd_buffer_t *cmdbuf)
 {
@@ -578,10 +608,11 @@ static __inline__ int r300_emit_raw_packet3(drm_radeon_private_t *dev_priv,
 	case RADEON_CNTL_BITBLT_MULTI:
 		return r300_emit_bitblt_multi(dev_priv, cmdbuf);
 
+	case RADEON_CP_INDX_BUFFER:	/* DRAW_INDX_2 without INDX_BUFFER seems to lock up the gpu */
+		return r300_emit_indx_buffer(dev_priv, cmdbuf);
 	case RADEON_CP_3D_DRAW_IMMD_2:	/* triggers drawing using in-packet vertex data */
 	case RADEON_CP_3D_DRAW_VBUF_2:	/* triggers drawing of vertex buffers setup elsewhere */
 	case RADEON_CP_3D_DRAW_INDX_2:	/* triggers drawing using indices to vertex buffer */
-	case RADEON_CP_INDX_BUFFER:	/* DRAW_INDX_2 without INDX_BUFFER seems to lock up the gpu */
 	case RADEON_WAIT_FOR_IDLE:
 	case RADEON_CP_NOP:
 		/* these packets are safe */
diff --git a/drivers/char/drm/radeon_state.c b/drivers/char/drm/radeon_state.c
index feac5f005d47..6e04fdd732ac 100644
--- a/drivers/char/drm/radeon_state.c
+++ b/drivers/char/drm/radeon_state.c
@@ -275,6 +275,8 @@ static __inline__ int radeon_check_and_fixup_packet3(drm_radeon_private_t *
 						     unsigned int *cmdsz)
 {
 	u32 *cmd = (u32 *) cmdbuf->buf;
+	u32 offset, narrays;
+	int count, i, k;
 
 	*cmdsz = 2 + ((cmd[0] & RADEON_CP_PACKET_COUNT_MASK) >> 16);
 
@@ -288,10 +290,106 @@ static __inline__ int radeon_check_and_fixup_packet3(drm_radeon_private_t *
 		return DRM_ERR(EINVAL);
 	}
 
-	/* Check client state and fix it up if necessary */
-	if (cmd[0] & 0x8000) {	/* MSB of opcode: next DWORD GUI_CNTL */
-		u32 offset;
+	switch(cmd[0] & 0xff00) {
+	/* XXX Are there old drivers needing other packets? */
 
+	case RADEON_3D_DRAW_IMMD:
+	case RADEON_3D_DRAW_VBUF:
+	case RADEON_3D_DRAW_INDX:
+	case RADEON_WAIT_FOR_IDLE:
+	case RADEON_CP_NOP:
+	case RADEON_3D_CLEAR_ZMASK:
+/*	case RADEON_CP_NEXT_CHAR:
+	case RADEON_CP_PLY_NEXTSCAN:
+	case RADEON_CP_SET_SCISSORS: */ /* probably safe but will never need them? */
+		/* these packets are safe */
+		break;
+
+	case RADEON_CP_3D_DRAW_IMMD_2:
+	case RADEON_CP_3D_DRAW_VBUF_2:
+	case RADEON_CP_3D_DRAW_INDX_2:
+	case RADEON_3D_CLEAR_HIZ:
+		/* safe but r200 only */
+		if (dev_priv->microcode_version != UCODE_R200) {
+			DRM_ERROR("Invalid 3d packet for r100-class chip\n");
+			return DRM_ERR(EINVAL);
+		}
+		break;
+
+	case RADEON_3D_LOAD_VBPNTR:
+		count = (cmd[0] >> 16) & 0x3fff;
+
+		if (count > 18) { /* 12 arrays max */
+			DRM_ERROR("Too large payload in 3D_LOAD_VBPNTR (count=%d)\n",
+				  count);
+			return DRM_ERR(EINVAL);
+		}
+
+		/* carefully check packet contents */
+		narrays = cmd[1] & ~0xc000;
+		k = 0;
+		i = 2;
+		while ((k < narrays) && (i < (count + 2))) {
+			i++;		/* skip attribute field */
+			if (radeon_check_and_fixup_offset(dev_priv, filp_priv, &cmd[i])) {
+				DRM_ERROR
+				    ("Invalid offset (k=%d i=%d) in 3D_LOAD_VBPNTR packet.\n",
+				     k, i);
+				return DRM_ERR(EINVAL);
+			}
+			k++;
+			i++;
+			if (k == narrays)
+				break;
+			/* have one more to process, they come in pairs */
+			if (radeon_check_and_fixup_offset(dev_priv, filp_priv, &cmd[i])) {
+				DRM_ERROR
+				    ("Invalid offset (k=%d i=%d) in 3D_LOAD_VBPNTR packet.\n",
+				     k, i);
+				return DRM_ERR(EINVAL);
+			}
+			k++;
+			i++;
+		}
+		/* do the counts match what we expect ? */
+		if ((k != narrays) || (i != (count + 2))) {
+			DRM_ERROR
+			    ("Malformed 3D_LOAD_VBPNTR packet (k=%d i=%d narrays=%d count+1=%d).\n",
+			      k, i, narrays, count + 1);
+			return DRM_ERR(EINVAL);
+		}
+		break;
+
+	case RADEON_3D_RNDR_GEN_INDX_PRIM:
+		if (dev_priv->microcode_version != UCODE_R100) {
+			DRM_ERROR("Invalid 3d packet for r200-class chip\n");
+			return DRM_ERR(EINVAL);
+		}
+		if (radeon_check_and_fixup_offset(dev_priv, filp_priv, &cmd[1])) {
+				DRM_ERROR("Invalid rndr_gen_indx offset\n");
+				return DRM_ERR(EINVAL);
+		}
+		break;
+
+	case RADEON_CP_INDX_BUFFER:
+		if (dev_priv->microcode_version != UCODE_R200) {
+			DRM_ERROR("Invalid 3d packet for r100-class chip\n");
+			return DRM_ERR(EINVAL);
+		}
+		if ((cmd[1] & 0x8000ffff) != 0x80000810) {
+			DRM_ERROR("Invalid indx_buffer reg address %08X\n", cmd[1]);
+			return DRM_ERR(EINVAL);
+		}
+		if (radeon_check_and_fixup_offset(dev_priv, filp_priv, &cmd[2])) {
+			DRM_ERROR("Invalid indx_buffer offset is %08X\n", cmd[2]);
+			return DRM_ERR(EINVAL);
+		}
+		break;
+
+	case RADEON_CNTL_HOSTDATA_BLT:
+	case RADEON_CNTL_PAINT_MULTI:
+	case RADEON_CNTL_BITBLT_MULTI:
+		/* MSB of opcode: next DWORD GUI_CNTL */
 		if (cmd[1] & (RADEON_GMC_SRC_PITCH_OFFSET_CNTL
 			      | RADEON_GMC_DST_PITCH_OFFSET_CNTL)) {
 			offset = cmd[2] << 10;
@@ -313,6 +411,11 @@ static __inline__ int radeon_check_and_fixup_packet3(drm_radeon_private_t *
 			}
 			cmd[3] = (cmd[3] & 0xffc00000) | offset >> 10;
 		}
+		break;
+
+	default:
+		DRM_ERROR("Invalid packet type %x\n", cmd[0] & 0xff00);
+		return DRM_ERR(EINVAL);
 	}
 
 	return 0;
diff --git a/drivers/char/drm/savage_bci.c b/drivers/char/drm/savage_bci.c
index 59c7520bf9a2..a9a84f88df5e 100644
--- a/drivers/char/drm/savage_bci.c
+++ b/drivers/char/drm/savage_bci.c
@@ -728,6 +728,7 @@ static int savage_do_init_bci(drm_device_t * dev, drm_savage_init_t * init)
 		dev_priv->status = NULL;
 	}
 	if (dev_priv->dma_type == SAVAGE_DMA_AGP && init->buffers_offset) {
+		dev->agp_buffer_token = init->buffers_offset;
 		dev->agp_buffer_map = drm_core_findmap(dev,
 						       init->buffers_offset);
 		if (!dev->agp_buffer_map) {
diff --git a/drivers/char/drm/savage_state.c b/drivers/char/drm/savage_state.c
index ef2581d16146..1ca1e9cb5a33 100644
--- a/drivers/char/drm/savage_state.c
+++ b/drivers/char/drm/savage_state.c
@@ -994,7 +994,7 @@ int savage_bci_cmdbuf(DRM_IOCTL_ARGS)
 	if (cmdbuf.size) {
 		kcmd_addr = drm_alloc(cmdbuf.size * 8, DRM_MEM_DRIVER);
 		if (kcmd_addr == NULL)
-			return ENOMEM;
+			return DRM_ERR(ENOMEM);
 
 		if (DRM_COPY_FROM_USER(kcmd_addr, cmdbuf.cmd_addr,
 				       cmdbuf.size * 8))