leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drm/vmwgfx: Hook up guest-backed surfaces

Browse Source 
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
This commit is contained in:
Thomas Hellstrom 2012-11-21 11:45:13 +01:00
parent 58a0c5f036
commit a97e21923b
5 changed files with 708 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
View File

@ -112,6 +112,12 @@
#define DRM_IOCTL_VMW_UPDATE_LAYOUT \
DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT, \
struct drm_vmw_update_layout_arg)
#define DRM_IOCTL_VMW_GB_SURFACE_CREATE \
DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_CREATE, \
union drm_vmw_gb_surface_create_arg)
#define DRM_IOCTL_VMW_GB_SURFACE_REF \
DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_REF, \
union drm_vmw_gb_surface_reference_arg)
/**
* The core DRM version of this macro doesn't account for
@ -177,6 +183,12 @@ static const struct drm_ioctl_desc vmw_ioctls[] = {
VMW_IOCTL_DEF(VMW_UPDATE_LAYOUT,
vmw_kms_update_layout_ioctl,
DRM_MASTER | DRM_UNLOCKED),
VMW_IOCTL_DEF(VMW_GB_SURFACE_CREATE,
vmw_gb_surface_define_ioctl,
DRM_AUTH | DRM_UNLOCKED),
VMW_IOCTL_DEF(VMW_GB_SURFACE_REF,
vmw_gb_surface_reference_ioctl,
DRM_AUTH | DRM_UNLOCKED),
};
static struct pci_device_id vmw_pci_id_list[] = {

13
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
View File

@ -528,6 +528,10 @@ extern int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_surface_check(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
uint32_t handle, int *id);
@ -541,6 +545,15 @@ extern int vmw_dmabuf_init(struct vmw_private *dev_priv,
void (*bo_free) (struct ttm_buffer_object *bo));
extern int vmw_user_dmabuf_verify_access(struct ttm_buffer_object *bo,
struct ttm_object_file *tfile);
extern int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
uint32_t size,
bool shareable,
uint32_t *handle,
struct vmw_dma_buffer **p_dma_buf);
extern int vmw_user_dmabuf_reference(struct ttm_object_file *tfile,
struct vmw_dma_buffer *dma_buf,
uint32_t *handle);
extern int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data,

231
drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
View File

@ -1185,6 +1185,222 @@ static int vmw_cmd_check_define_gmrfb(struct vmw_private *dev_priv,
return ret;
}
/**
* vmw_cmd_switch_backup - Utility function to handle backup buffer switching
*
* @dev_priv: Pointer to a device private struct.
* @sw_context: The software context being used for this batch.
* @res_type: The resource type.
* @converter: Information about user-space binding for this resource type.
* @res_id: Pointer to the user-space resource handle in the command stream.
* @buf_id: Pointer to the user-space backup buffer handle in the command
* stream.
* @backup_offset: Offset of backup into MOB.
*
* This function prepares for registering a switch of backup buffers
* in the resource metadata just prior to unreserving.
*/
static int vmw_cmd_switch_backup(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
enum vmw_res_type res_type,
const struct vmw_user_resource_conv
*converter,
uint32_t *res_id,
uint32_t *buf_id,
unsigned long backup_offset)
{
int ret;
struct vmw_dma_buffer *dma_buf;
struct vmw_resource_val_node *val_node;
ret = vmw_cmd_res_check(dev_priv, sw_context, res_type,
converter, res_id, &val_node);
if (unlikely(ret != 0))
return ret;
ret = vmw_translate_mob_ptr(dev_priv, sw_context, buf_id, &dma_buf);
if (unlikely(ret != 0))
return ret;
if (val_node->first_usage)
val_node->no_buffer_needed = true;
vmw_dmabuf_unreference(&val_node->new_backup);
val_node->new_backup = dma_buf;
val_node->new_backup_offset = backup_offset;
return 0;
}
/**
* vmw_cmd_bind_gb_surface - Validate an SVGA_3D_CMD_BIND_GB_SURFACE
* command
*
* @dev_priv: Pointer to a device private struct.
* @sw_context: The software context being used for this batch.
* @header: Pointer to the command header in the command stream.
*/
static int vmw_cmd_bind_gb_surface(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGA3dCmdHeader *header)
{
struct vmw_bind_gb_surface_cmd {
SVGA3dCmdHeader header;
SVGA3dCmdBindGBSurface body;
} *cmd;
cmd = container_of(header, struct vmw_bind_gb_surface_cmd, header);
return vmw_cmd_switch_backup(dev_priv, sw_context, vmw_res_surface,
user_surface_converter,
&cmd->body.sid, &cmd->body.mobid,
0);
}
/**
* vmw_cmd_update_gb_image - Validate an SVGA_3D_CMD_UPDATE_GB_IMAGE
* command
*
* @dev_priv: Pointer to a device private struct.
* @sw_context: The software context being used for this batch.
* @header: Pointer to the command header in the command stream.
*/
static int vmw_cmd_update_gb_image(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGA3dCmdHeader *header)
{
struct vmw_gb_surface_cmd {
SVGA3dCmdHeader header;
SVGA3dCmdUpdateGBImage body;
} *cmd;
cmd = container_of(header, struct vmw_gb_surface_cmd, header);
return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
user_surface_converter,
&cmd->body.image.sid, NULL);
}
/**
* vmw_cmd_update_gb_surface - Validate an SVGA_3D_CMD_UPDATE_GB_SURFACE
* command
*
* @dev_priv: Pointer to a device private struct.
* @sw_context: The software context being used for this batch.
* @header: Pointer to the command header in the command stream.
*/
static int vmw_cmd_update_gb_surface(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGA3dCmdHeader *header)
{
struct vmw_gb_surface_cmd {
SVGA3dCmdHeader header;
SVGA3dCmdUpdateGBSurface body;
} *cmd;
cmd = container_of(header, struct vmw_gb_surface_cmd, header);
return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
user_surface_converter,
&cmd->body.sid, NULL);
}
/**
* vmw_cmd_readback_gb_image - Validate an SVGA_3D_CMD_READBACK_GB_IMAGE
* command
*
* @dev_priv: Pointer to a device private struct.
* @sw_context: The software context being used for this batch.
* @header: Pointer to the command header in the command stream.
*/
static int vmw_cmd_readback_gb_image(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGA3dCmdHeader *header)
{
struct vmw_gb_surface_cmd {
SVGA3dCmdHeader header;
SVGA3dCmdReadbackGBImage body;
} *cmd;
cmd = container_of(header, struct vmw_gb_surface_cmd, header);
return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
user_surface_converter,
&cmd->body.image.sid, NULL);
}
/**
* vmw_cmd_readback_gb_surface - Validate an SVGA_3D_CMD_READBACK_GB_SURFACE
* command
*
* @dev_priv: Pointer to a device private struct.
* @sw_context: The software context being used for this batch.
* @header: Pointer to the command header in the command stream.
*/
static int vmw_cmd_readback_gb_surface(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGA3dCmdHeader *header)
{
struct vmw_gb_surface_cmd {
SVGA3dCmdHeader header;
SVGA3dCmdReadbackGBSurface body;
} *cmd;
cmd = container_of(header, struct vmw_gb_surface_cmd, header);
return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
user_surface_converter,
&cmd->body.sid, NULL);
}
/**
* vmw_cmd_invalidate_gb_image - Validate an SVGA_3D_CMD_INVALIDATE_GB_IMAGE
* command
*
* @dev_priv: Pointer to a device private struct.
* @sw_context: The software context being used for this batch.
* @header: Pointer to the command header in the command stream.
*/
static int vmw_cmd_invalidate_gb_image(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGA3dCmdHeader *header)
{
struct vmw_gb_surface_cmd {
SVGA3dCmdHeader header;
SVGA3dCmdInvalidateGBImage body;
} *cmd;
cmd = container_of(header, struct vmw_gb_surface_cmd, header);
return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
user_surface_converter,
&cmd->body.image.sid, NULL);
}
/**
* vmw_cmd_invalidate_gb_surface - Validate an
* SVGA_3D_CMD_INVALIDATE_GB_SURFACE command
*
* @dev_priv: Pointer to a device private struct.
* @sw_context: The software context being used for this batch.
* @header: Pointer to the command header in the command stream.
*/
static int vmw_cmd_invalidate_gb_surface(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGA3dCmdHeader *header)
{
struct vmw_gb_surface_cmd {
SVGA3dCmdHeader header;
SVGA3dCmdInvalidateGBSurface body;
} *cmd;
cmd = container_of(header, struct vmw_gb_surface_cmd, header);
return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
user_surface_converter,
&cmd->body.sid, NULL);
}
/**
* vmw_cmd_set_shader - Validate an SVGA_3D_CMD_SET_SHADER
* command
@ -1300,6 +1516,21 @@ static vmw_cmd_func vmw_cmd_funcs[SVGA_3D_CMD_MAX] = {
VMW_CMD_DEF(SVGA_3D_CMD_GENERATE_MIPMAPS, &vmw_cmd_invalid),
VMW_CMD_DEF(SVGA_3D_CMD_ACTIVATE_SURFACE, &vmw_cmd_invalid),
VMW_CMD_DEF(SVGA_3D_CMD_DEACTIVATE_SURFACE, &vmw_cmd_invalid),
VMW_CMD_DEF(SVGA_3D_CMD_DEFINE_GB_SURFACE, &vmw_cmd_invalid),
VMW_CMD_DEF(SVGA_3D_CMD_DESTROY_GB_SURFACE, &vmw_cmd_invalid),
VMW_CMD_DEF(SVGA_3D_CMD_BIND_GB_SURFACE, &vmw_cmd_bind_gb_surface),
VMW_CMD_DEF(SVGA_3D_CMD_COND_BIND_GB_SURFACE, &vmw_cmd_invalid),
VMW_CMD_DEF(SVGA_3D_CMD_UPDATE_GB_IMAGE, &vmw_cmd_update_gb_image),
VMW_CMD_DEF(SVGA_3D_CMD_UPDATE_GB_SURFACE,
&vmw_cmd_update_gb_surface),
VMW_CMD_DEF(SVGA_3D_CMD_READBACK_GB_IMAGE,
&vmw_cmd_readback_gb_image),
VMW_CMD_DEF(SVGA_3D_CMD_READBACK_GB_SURFACE,
&vmw_cmd_readback_gb_surface),
VMW_CMD_DEF(SVGA_3D_CMD_INVALIDATE_GB_IMAGE,
&vmw_cmd_invalidate_gb_image),
VMW_CMD_DEF(SVGA_3D_CMD_INVALIDATE_GB_SURFACE,
&vmw_cmd_invalidate_gb_surface),
VMW_CMD_DEF(SVGA_3D_CMD_DEFINE_GB_CONTEXT, &vmw_cmd_invalid),
VMW_CMD_DEF(SVGA_3D_CMD_DESTROY_GB_CONTEXT, &vmw_cmd_invalid),
VMW_CMD_DEF(SVGA_3D_CMD_BIND_GB_CONTEXT, &vmw_cmd_invalid),

5
drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
View File

@ -593,7 +593,8 @@ int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
}
int vmw_user_dmabuf_reference(struct ttm_object_file *tfile,
struct vmw_dma_buffer *dma_buf)
struct vmw_dma_buffer *dma_buf,
uint32_t *handle)
{
struct vmw_user_dma_buffer *user_bo;
@ -601,6 +602,8 @@ int vmw_user_dmabuf_reference(struct ttm_object_file *tfile,
return -EINVAL;
user_bo = container_of(dma_buf, struct vmw_user_dma_buffer, dma);
*handle = user_bo->prime.base.hash.key;
return ttm_ref_object_add(tfile, &user_bo->prime.base,
TTM_REF_USAGE, NULL);
}

451
drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
View File

@ -41,7 +41,6 @@ struct vmw_user_surface {
struct ttm_prime_object prime;
struct vmw_surface srf;
uint32_t size;
uint32_t backup_handle;
};
/**
@ -68,6 +67,14 @@ static int vmw_legacy_srf_unbind(struct vmw_resource *res,
struct ttm_validate_buffer *val_buf);
static int vmw_legacy_srf_create(struct vmw_resource *res);
static int vmw_legacy_srf_destroy(struct vmw_resource *res);
static int vmw_gb_surface_create(struct vmw_resource *res);
static int vmw_gb_surface_bind(struct vmw_resource *res,
struct ttm_validate_buffer *val_buf);
static int vmw_gb_surface_unbind(struct vmw_resource *res,
bool readback,
struct ttm_validate_buffer *val_buf);
static int vmw_gb_surface_destroy(struct vmw_resource *res);
static const struct vmw_user_resource_conv user_surface_conv = {
.object_type = VMW_RES_SURFACE,
@ -93,6 +100,18 @@ static const struct vmw_res_func vmw_legacy_surface_func = {
.unbind = &vmw_legacy_srf_unbind
};
static const struct vmw_res_func vmw_gb_surface_func = {
.res_type = vmw_res_surface,
.needs_backup = true,
.may_evict = true,
.type_name = "guest backed surfaces",
.backup_placement = &vmw_mob_placement,
.create = vmw_gb_surface_create,
.destroy = vmw_gb_surface_destroy,
.bind = vmw_gb_surface_bind,
.unbind = vmw_gb_surface_unbind
};
/**
* struct vmw_surface_dma - SVGA3D DMA command
*/
@ -291,6 +310,11 @@ static void vmw_hw_surface_destroy(struct vmw_resource *res)
struct vmw_surface *srf;
void *cmd;
if (res->func->destroy == vmw_gb_surface_destroy) {
(void) vmw_gb_surface_destroy(res);
return;
}
if (res->id != -1) {
cmd = vmw_fifo_reserve(dev_priv, vmw_surface_destroy_size());
@ -549,12 +573,15 @@ static int vmw_surface_init(struct vmw_private *dev_priv,
struct vmw_resource *res = &srf->res;
BUG_ON(res_free == NULL);
(void) vmw_3d_resource_inc(dev_priv, false);
if (!dev_priv->has_mob)
(void) vmw_3d_resource_inc(dev_priv, false);
ret = vmw_resource_init(dev_priv, res, true, res_free,
(dev_priv->has_mob) ? &vmw_gb_surface_func :
&vmw_legacy_surface_func);
if (unlikely(ret != 0)) {
vmw_3d_resource_dec(dev_priv, false);
if (!dev_priv->has_mob)
vmw_3d_resource_dec(dev_priv, false);
res_free(res);
return ret;
}
@ -894,3 +921,421 @@ out_no_reference:
return ret;
}
/**
* vmw_surface_define_encode - Encode a surface_define command.
*
* @srf: Pointer to a struct vmw_surface object.
* @cmd_space: Pointer to memory area in which the commands should be encoded.
*/
static int vmw_gb_surface_create(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
struct vmw_surface *srf = vmw_res_to_srf(res);
uint32_t cmd_len, submit_len;
int ret;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDefineGBSurface body;
} *cmd;
if (likely(res->id != -1))
return 0;
(void) vmw_3d_resource_inc(dev_priv, false);
ret = vmw_resource_alloc_id(res);
if (unlikely(ret != 0)) {
DRM_ERROR("Failed to allocate a surface id.\n");
goto out_no_id;
}
if (unlikely(res->id >= VMWGFX_NUM_GB_SURFACE)) {
ret = -EBUSY;
goto out_no_fifo;
}
cmd_len = sizeof(cmd->body);
submit_len = sizeof(*cmd);
cmd = vmw_fifo_reserve(dev_priv, submit_len);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"creation.\n");
ret = -ENOMEM;
goto out_no_fifo;
}
cmd->header.id = SVGA_3D_CMD_DEFINE_GB_SURFACE;
cmd->header.size = cmd_len;
cmd->body.sid = srf->res.id;
cmd->body.surfaceFlags = srf->flags;
cmd->body.format = cpu_to_le32(srf->format);
cmd->body.numMipLevels = srf->mip_levels[0];
cmd->body.multisampleCount = srf->multisample_count;
cmd->body.autogenFilter = srf->autogen_filter;
cmd->body.size.width = srf->base_size.width;
cmd->body.size.height = srf->base_size.height;
cmd->body.size.depth = srf->base_size.depth;
vmw_fifo_commit(dev_priv, submit_len);
return 0;
out_no_fifo:
vmw_resource_release_id(res);
out_no_id:
vmw_3d_resource_dec(dev_priv, false);
return ret;
}
static int vmw_gb_surface_bind(struct vmw_resource *res,
struct ttm_validate_buffer *val_buf)
{
struct vmw_private *dev_priv = res->dev_priv;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdBindGBSurface body;
} *cmd1;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdUpdateGBSurface body;
} *cmd2;
uint32_t submit_size;
struct ttm_buffer_object *bo = val_buf->bo;
BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
submit_size = sizeof(*cmd1) + (res->backup_dirty ? sizeof(*cmd2) : 0);
cmd1 = vmw_fifo_reserve(dev_priv, submit_size);
if (unlikely(cmd1 == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"binding.\n");
return -ENOMEM;
}
cmd1->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
cmd1->header.size = sizeof(cmd1->body);
cmd1->body.sid = res->id;
cmd1->body.mobid = bo->mem.start;
if (res->backup_dirty) {
cmd2 = (void *) &cmd1[1];
cmd2->header.id = SVGA_3D_CMD_UPDATE_GB_SURFACE;
cmd2->header.size = sizeof(cmd2->body);
cmd2->body.sid = res->id;
res->backup_dirty = false;
}
vmw_fifo_commit(dev_priv, submit_size);
return 0;
}
static int vmw_gb_surface_unbind(struct vmw_resource *res,
bool readback,
struct ttm_validate_buffer *val_buf)
{
struct vmw_private *dev_priv = res->dev_priv;
struct ttm_buffer_object *bo = val_buf->bo;
struct vmw_fence_obj *fence;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdReadbackGBSurface body;
} *cmd1;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdBindGBSurface body;
} *cmd2;
uint32_t submit_size;
uint8_t *cmd;
BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
submit_size = sizeof(*cmd2) + (readback ? sizeof(*cmd1) : 0);
cmd = vmw_fifo_reserve(dev_priv, submit_size);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"unbinding.\n");
return -ENOMEM;
}
cmd2 = (void *) cmd;
if (readback) {
cmd1 = (void *) cmd;
cmd1->header.id = SVGA_3D_CMD_READBACK_GB_SURFACE;
cmd1->header.size = sizeof(cmd1->body);
cmd1->body.sid = res->id;
cmd2 = (void *) &cmd1[1];
}
cmd2->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
cmd2->header.size = sizeof(cmd2->body);
cmd2->body.sid = res->id;
cmd2->body.mobid = SVGA3D_INVALID_ID;
vmw_fifo_commit(dev_priv, submit_size);
/*
* Create a fence object and fence the backup buffer.
*/
(void) vmw_execbuf_fence_commands(NULL, dev_priv,
&fence, NULL);
vmw_fence_single_bo(val_buf->bo, fence);
if (likely(fence != NULL))
vmw_fence_obj_unreference(&fence);
return 0;
}
static int vmw_gb_surface_destroy(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDestroyGBSurface body;
} *cmd;
if (likely(res->id == -1))
return 0;
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"destruction.\n");
return -ENOMEM;
}
cmd->header.id = SVGA_3D_CMD_DESTROY_GB_SURFACE;
cmd->header.size = sizeof(cmd->body);
cmd->body.sid = res->id;
vmw_fifo_commit(dev_priv, sizeof(*cmd));
vmw_resource_release_id(res);
vmw_3d_resource_dec(dev_priv, false);
return 0;
}
/**
* vmw_gb_surface_define_ioctl - Ioctl function implementing
* the user surface define functionality.
*
* @dev: Pointer to a struct drm_device.
* @data: Pointer to data copied from / to user-space.
* @file_priv: Pointer to a drm file private structure.
*/
int vmw_gb_surface_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct vmw_private *dev_priv = vmw_priv(dev);
struct vmw_user_surface *user_srf;
struct vmw_surface *srf;
struct vmw_resource *res;
struct vmw_resource *tmp;
union drm_vmw_gb_surface_create_arg *arg =
(union drm_vmw_gb_surface_create_arg *)data;
struct drm_vmw_gb_surface_create_req *req = &arg->req;
struct drm_vmw_gb_surface_create_rep *rep = &arg->rep;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
int ret;
uint32_t size;
struct vmw_master *vmaster = vmw_master(file_priv->master);
const struct svga3d_surface_desc *desc;
uint32_t backup_handle;
if (unlikely(vmw_user_surface_size == 0))
vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
128;
size = vmw_user_surface_size + 128;
desc = svga3dsurface_get_desc(req->format);
if (unlikely(desc->block_desc == SVGA3DBLOCKDESC_NONE)) {
DRM_ERROR("Invalid surface format for surface creation.\n");
return -EINVAL;
}
ret = ttm_read_lock(&vmaster->lock, true);
if (unlikely(ret != 0))
return ret;
ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
size, false, true);
if (unlikely(ret != 0)) {
if (ret != -ERESTARTSYS)
DRM_ERROR("Out of graphics memory for surface"
" creation.\n");
goto out_unlock;
}
user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
if (unlikely(user_srf == NULL)) {
ret = -ENOMEM;
goto out_no_user_srf;
}
srf = &user_srf->srf;
res = &srf->res;
srf->flags = req->svga3d_flags;
srf->format = req->format;
srf->scanout = req->drm_surface_flags & drm_vmw_surface_flag_scanout;
srf->mip_levels[0] = req->mip_levels;
srf->num_sizes = 1;
srf->sizes = NULL;
srf->offsets = NULL;
user_srf->size = size;
srf->base_size = req->base_size;
srf->autogen_filter = SVGA3D_TEX_FILTER_NONE;
srf->multisample_count = req->multisample_count;
res->backup_size = svga3dsurface_get_serialized_size
(srf->format, srf->base_size, srf->mip_levels[0],
srf->flags & SVGA3D_SURFACE_CUBEMAP);
user_srf->prime.base.shareable = false;
user_srf->prime.base.tfile = NULL;
/**
* From this point, the generic resource management functions
* destroy the object on failure.
*/
ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
if (unlikely(ret != 0))
goto out_unlock;
if (req->buffer_handle != SVGA3D_INVALID_ID) {
ret = vmw_user_dmabuf_lookup(tfile, req->buffer_handle,
&res->backup);
} else if (req->drm_surface_flags &
drm_vmw_surface_flag_create_buffer)
ret = vmw_user_dmabuf_alloc(dev_priv, tfile,
res->backup_size,
req->drm_surface_flags &
drm_vmw_surface_flag_shareable,
&backup_handle,
&res->backup);
if (unlikely(ret != 0)) {
vmw_resource_unreference(&res);
goto out_unlock;
}
tmp = vmw_resource_reference(&srf->res);
ret = ttm_prime_object_init(tfile, res->backup_size, &user_srf->prime,
req->drm_surface_flags &
drm_vmw_surface_flag_shareable,
VMW_RES_SURFACE,
&vmw_user_surface_base_release, NULL);
if (unlikely(ret != 0)) {
vmw_resource_unreference(&tmp);
vmw_resource_unreference(&res);
goto out_unlock;
}
rep->handle = user_srf->prime.base.hash.key;
rep->backup_size = res->backup_size;
if (res->backup) {
rep->buffer_map_handle =
drm_vma_node_offset_addr(&res->backup->base.vma_node);
rep->buffer_size = res->backup->base.num_pages * PAGE_SIZE;
rep->buffer_handle = backup_handle;
} else {
rep->buffer_map_handle = 0;
rep->buffer_size = 0;
rep->buffer_handle = SVGA3D_INVALID_ID;
}
vmw_resource_unreference(&res);
ttm_read_unlock(&vmaster->lock);
return 0;
out_no_user_srf:
ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
out_unlock:
ttm_read_unlock(&vmaster->lock);
return ret;
}
/**
* vmw_gb_surface_reference_ioctl - Ioctl function implementing
* the user surface reference functionality.
*
* @dev: Pointer to a struct drm_device.
* @data: Pointer to data copied from / to user-space.
* @file_priv: Pointer to a drm file private structure.
*/
int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct vmw_private *dev_priv = vmw_priv(dev);
union drm_vmw_gb_surface_reference_arg *arg =
(union drm_vmw_gb_surface_reference_arg *)data;
struct drm_vmw_surface_arg *req = &arg->req;
struct drm_vmw_gb_surface_ref_rep *rep = &arg->rep;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
struct vmw_surface *srf;
struct vmw_user_surface *user_srf;
struct ttm_base_object *base;
uint32_t backup_handle;
int ret = -EINVAL;
base = ttm_base_object_lookup_for_ref(dev_priv->tdev, req->sid);
if (unlikely(base == NULL)) {
DRM_ERROR("Could not find surface to reference.\n");
return -EINVAL;
}
if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE))
goto out_bad_resource;
user_srf = container_of(base, struct vmw_user_surface, prime.base);
srf = &user_srf->srf;
if (srf->res.backup == NULL) {
DRM_ERROR("Shared GB surface is missing a backup buffer.\n");
goto out_bad_resource;
}
ret = ttm_ref_object_add(tfile, &user_srf->prime.base,
TTM_REF_USAGE, NULL);
if (unlikely(ret != 0)) {
DRM_ERROR("Could not add a reference to a GB surface.\n");
goto out_bad_resource;
}
mutex_lock(&dev_priv->cmdbuf_mutex); /* Protect res->backup */
ret = vmw_user_dmabuf_reference(tfile, srf->res.backup,
&backup_handle);
mutex_unlock(&dev_priv->cmdbuf_mutex);
if (unlikely(ret != 0)) {
DRM_ERROR("Could not add a reference to a GB surface "
"backup buffer.\n");
(void) ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
req->sid,
TTM_REF_USAGE);
goto out_bad_resource;
}
rep->creq.svga3d_flags = srf->flags;
rep->creq.format = srf->format;
rep->creq.mip_levels = srf->mip_levels[0];
rep->creq.drm_surface_flags = 0;
rep->creq.multisample_count = srf->multisample_count;
rep->creq.autogen_filter = srf->autogen_filter;
rep->creq.buffer_handle = backup_handle;
rep->creq.base_size = srf->base_size;
rep->crep.handle = user_srf->prime.base.hash.key;
rep->crep.backup_size = srf->res.backup_size;
rep->crep.buffer_handle = backup_handle;
rep->crep.buffer_map_handle =
drm_vma_node_offset_addr(&srf->res.backup->base.vma_node);
rep->crep.buffer_size = srf->res.backup->base.num_pages * PAGE_SIZE;
out_bad_resource:
ttm_base_object_unref(&base);
return ret;
}