/**************************************************************************
*
* Copyright © 2009-2012 VMware, Inc., Palo Alto, CA., USA
* 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, sub license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS 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.
*
**************************************************************************/
#include "vmwgfx_drv.h"
#include "vmwgfx_resource_priv.h"
#include <ttm/ttm_placement.h>
#include "svga3d_surfacedefs.h"
/**
* struct vmw_user_surface - User-space visible surface resource
*
* @base: The TTM base object handling user-space visibility.
* @srf: The surface metadata.
* @size: TTM accounting size for the surface.
*/
struct vmw_user_surface {
struct ttm_base_object base;
struct vmw_surface srf;
uint32_t size;
uint32_t backup_handle;
};
/**
* struct vmw_surface_offset - Backing store mip level offset info
*
* @face: Surface face.
* @mip: Mip level.
* @bo_offset: Offset into backing store of this mip level.
*
*/
struct vmw_surface_offset {
uint32_t face;
uint32_t mip;
uint32_t bo_offset;
};
static void vmw_user_surface_free(struct vmw_resource *res);
static struct vmw_resource *
vmw_user_surface_base_to_res(struct ttm_base_object *base);
static int vmw_legacy_srf_bind(struct vmw_resource *res,
struct ttm_validate_buffer *val_buf);
static int vmw_legacy_srf_unbind(struct vmw_resource *res,
bool readback,
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 const struct vmw_user_resource_conv user_surface_conv = {
.object_type = VMW_RES_SURFACE,
.base_obj_to_res = vmw_user_surface_base_to_res,
.res_free = vmw_user_surface_free
};
const struct vmw_user_resource_conv *user_surface_converter =
&user_surface_conv;
static uint64_t vmw_user_surface_size;
static const struct vmw_res_func vmw_legacy_surface_func = {
.res_type = vmw_res_surface,
.needs_backup = false,
.may_evict = true,
.type_name = "legacy surfaces",
.backup_placement = &vmw_srf_placement,
.create = &vmw_legacy_srf_create,
.destroy = &vmw_legacy_srf_destroy,
.bind = &vmw_legacy_srf_bind,
.unbind = &vmw_legacy_srf_unbind
};
/**
* struct vmw_surface_dma - SVGA3D DMA command
*/
struct vmw_surface_dma {
SVGA3dCmdHeader header;
SVGA3dCmdSurfaceDMA body;
SVGA3dCopyBox cb;
SVGA3dCmdSurfaceDMASuffix suffix;
};
/**
* struct vmw_surface_define - SVGA3D Surface Define command
*/
struct vmw_surface_define {
SVGA3dCmdHeader header;
SVGA3dCmdDefineSurface body;
};
/**
* struct vmw_surface_destroy - SVGA3D Surface Destroy command
*/
struct vmw_surface_destroy {
SVGA3dCmdHeader header;
SVGA3dCmdDestroySurface body;
};
/**
* vmw_surface_dma_size - Compute fifo size for a dma command.
*
* @srf: Pointer to a struct vmw_surface
*
* Computes the required size for a surface dma command for backup or
* restoration of the surface represented by @srf.
*/
static inline uint32_t vmw_surface_dma_size(const struct vmw_surface *srf)
{
return srf->num_sizes * sizeof(struct vmw_surface_dma);
}
/**
* vmw_surface_define_size - Compute fifo size for a surface define command.
*
* @srf: Pointer to a struct vmw_surface
*
* Computes the required size for a surface define command for the definition
* of the surface represented by @srf.
*/
static inline uint32_t vmw_surface_define_size(const struct vmw_surface *srf)
{
return sizeof(struct vmw_surface_define) + srf->num_sizes *
sizeof(SVGA3dSize);
}
/**
* vmw_surface_destroy_size - Compute fifo size for a surface destroy command.
*
* Computes the required size for a surface destroy command for the destruction
* of a hw surface.
*/
static inline uint32_t vmw_surface_destroy_size(void)
{
return sizeof(struct vmw_surface_destroy);
}
/**
* vmw_surface_destroy_encode - Encode a surface_destroy command.
*
* @id: The surface id
* @cmd_space: Pointer to memory area in which the commands should be encoded.
*/
static void vmw_surface_destroy_encode(uint32_t id,
void *cmd_space)
{
struct vmw_surface_destroy *cmd = (struct vmw_surface_destroy *)
cmd_space;
cmd->header.id = SVGA_3D_CMD_SURFACE_DESTROY;
cmd->header.size = sizeof(cmd->body);
cmd->body.sid = id;
}
/**
* 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 void vmw_surface_define_encode(const struct vmw_surface *srf,
void *cmd_space)
{
struct vmw_surface_define *cmd = (struct vmw_surface_define *)
cmd_space;
struct drm_vmw_size *src_size;
SVGA3dSize *cmd_size;
uint32_t cmd_len;
int i;
cmd_len = sizeof(cmd->body) + srf->num_sizes * sizeof(SVGA3dSize);
cmd->header.id = SVGA_3D_CMD_SURFACE_DEFINE;
cmd->header.size = cmd_len;
cmd->body.sid = srf->res.id;
cmd->body.surfaceFlags = srf->flags;
cmd->body.format = cpu_to_le32(srf->format);
for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
cmd->body.face[i].numMipLevels = srf->mip_levels[i];
cmd += 1;
cmd_size = (SVGA3dSize *) cmd;
src_size = srf->sizes;
for (i = 0; i < srf->num_sizes; ++i, cmd_size++, src_size++) {
cmd_size->width = src_size->width;
cmd_size->height = src_size->height;
cmd_size->depth = src_size->depth;
}
}
/**
* vmw_surface_dma_encode - Encode a surface_dma command.
*
* @srf: Pointer to a struct vmw_surface object.
* @cmd_space: Pointer to memory area in which the commands should be encoded.
* @ptr: Pointer to an SVGAGuestPtr indicating where the surface contents
* should be placed or read from.
* @to_surface: Boolean whether to DMA to the surface or from the surface.
*/
static void vmw_surface_dma_encode(struct vmw_surface *srf,
void *cmd_space,
const SVGAGuestPtr *ptr,
bool to_surface)
{
uint32_t i;
struct vmw_surface_dma *cmd = (struct vmw_surface_dma *)cmd_space;
const struct svga3d_surface_desc *desc =
svga3dsurface_get_desc(srf->format);
for (i = 0; i < srf->num_sizes; ++i) {
SVGA3dCmdHeader *header = &cmd->header;
SVGA3dCmdSurfaceDMA *body = &cmd->body;
SVGA3dCopyBox *cb = &cmd->cb;
SVGA3dCmdSurfaceDMASuffix *suffix = &cmd->suffix;
const struct vmw_surface_offset *cur_offset = &srf->offsets[i];
const struct drm_vmw_size *cur_size = &srf->sizes[i];
header->id = SVGA_3D_CMD_SURFACE_DMA;
header->size = sizeof(*body) + sizeof(*cb) + sizeof(*suffix);
body->guest.ptr = *ptr;
body->guest.ptr.offset += cur_offset->bo_offset;
body->guest.pitch = svga3dsurface_calculate_pitch(desc,
cur_size);
body->host.sid = srf->res.id;
body->host.face = cur_offset->face;
body->host.mipmap = cur_offset->mip;
body->transfer = ((to_surface) ? SVGA3D_WRITE_HOST_VRAM :
SVGA3D_READ_HOST_VRAM);
cb->x = 0;
cb->y = 0;
cb->z = 0;
cb->srcx = 0;
cb->srcy = 0;
cb->srcz = 0;
cb->w = cur_size->width;
cb->h = cur_size->height;
cb->d = cur_size->depth;
suffix->suffixSize = sizeof(*suffix);
suffix->maximumOffset =
svga3dsurface_get_image_buffer_size(desc, cur_size,
body->guest.pitch);
suffix->flags.discard = 0;
suffix->flags.unsynchronized = 0;
suffix->flags.reserved = 0;
++cmd;
}
};
/**
* vmw_hw_surface_destroy - destroy a Device surface
*
* @res: Pointer to a struct vmw_resource embedded in a struct
* vmw_surface.
*
* Destroys a the device surface associated with a struct vmw_surface if
* any, and adjusts accounting and resource count accordingly.
*/
static void vmw_hw_surface_destroy(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
struct vmw_surface *srf;
void *cmd;
if (res->id != -1) {
cmd = vmw_fifo_reserve(dev_priv, vmw_surface_destroy_size());
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"destruction.\n");
return;
}
vmw_surface_destroy_encode(res->id, cmd);
vmw_fifo_commit(dev_priv, vmw_surface_destroy_size());
/*
* used_memory_size_atomic, or separate lock
* to avoid taking dev_priv::cmdbuf_mutex in
* the destroy path.
*/
mutex_lock(&dev_priv->cmdbuf_mutex);
srf = vmw_res_to_srf(res);
dev_priv->used_memory_size -= res->backup_size;
mutex_unlock(&dev_priv->cmdbuf_mutex);
}
vmw_3d_resource_dec(dev_priv, false);
}
/**
* vmw_legacy_srf_create - Create a device surface as part of the
* resource validation process.
*
* @res: Pointer to a struct vmw_surface.
*
* If the surface doesn't have a hw id.
*
* Returns -EBUSY if there wasn't sufficient device resources to
* complete the validation. Retry after freeing up resources.
*
* May return other errors if the kernel is out of guest resources.
*/
static int vmw_legacy_srf_create(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
struct vmw_surface *srf;
uint32_t submit_size;
uint8_t *cmd;
int ret;
if (likely(res->id != -1))
return 0;
srf = vmw_res_to_srf(res);
if (unlikely(dev_priv->used_memory_size + res->backup_size >=
dev_priv->memory_size))
return -EBUSY;
/*
* Alloc id for the resource.
*/
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 >= SVGA3D_MAX_SURFACE_IDS)) {
ret = -EBUSY;
goto out_no_fifo;
}
/*
* Encode surface define- commands.
*/
submit_size = vmw_surface_define_size(srf);
cmd = vmw_fifo_reserve(dev_priv, submit_size);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"creation.\n");
ret = -ENOMEM;
goto out_no_fifo;
}
vmw_surface_define_encode(srf, cmd);
vmw_fifo_commit(dev_priv, submit_size);
/*
* Surface memory usage accounting.
*/
dev_priv->used_memory_size += res->backup_size;
return 0;
out_no_fifo:
vmw_resource_release_id(res);
out_no_id:
return ret;
}
/**
* vmw_legacy_srf_dma - Copy backup data to or from a legacy surface.
*
* @res: Pointer to a struct vmw_res embedded in a struct
* vmw_surface.
* @val_buf: Pointer to a struct ttm_validate_buffer containing
* information about the backup buffer.
* @bind: Boolean wether to DMA to the surface.
*
* Transfer backup data to or from a legacy surface as part of the
* validation process.
* May return other errors if the kernel is out of guest resources.
* The backup buffer will be fenced or idle upon successful completion,
* and if the surface needs persistent backup storage, the backup buffer
* will also be returned reserved iff @bind is true.
*/
static int vmw_legacy_srf_dma(struct vmw_resource *res,
struct ttm_validate_buffer *val_buf,
bool bind)
{
SVGAGuestPtr ptr;
struct vmw_fence_obj *fence;
uint32_t submit_size;
struct vmw_surface *srf = vmw_res_to_srf(res);
uint8_t *cmd;
struct vmw_private *dev_priv = res->dev_priv;
BUG_ON(val_buf->bo == NULL);
submit_size = vmw_surface_dma_size(srf);
cmd = vmw_fifo_reserve(dev_priv, submit_size);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"DMA.\n");
return -ENOMEM;
}
vmw_bo_get_guest_ptr(val_buf->bo, &ptr);
vmw_surface_dma_encode(srf, cmd, &ptr, bind);
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;
}
/**
* vmw_legacy_srf_bind - Perform a legacy surface bind as part of the
* surface validation process.
*
* @res: Pointer to a struct vmw_res embedded in a struct
* vmw_surface.
* @val_buf: Pointer to a struct ttm_validate_buffer containing
* information about the backup buffer.
*
* This function will copy backup data to the surface if the
* backup buffer is dirty.
*/
static int vmw_legacy_srf_bind(struct vmw_resource *res,
struct ttm_validate_buffer *val_buf)
{
if (!res->backup_dirty)
return 0;
return vmw_legacy_srf_dma(res, val_buf, true);
}
/**
* vmw_legacy_srf_unbind - Perform a legacy surface unbind as part of the
* surface eviction process.
*
* @res: Pointer to a struct vmw_res embedded in a struct
* vmw_surface.
* @val_buf: Pointer to a struct ttm_validate_buffer containing
* information about the backup buffer.
*
* This function will copy backup data from the surface.
*/
static int vmw_legacy_srf_unbind(struct vmw_resource *res,
bool readback,
struct ttm_validate_buffer *val_buf)
{
if (unlikely(readback))
return vmw_legacy_srf_dma(res, val_buf, false);
return 0;
}
/**
* vmw_legacy_srf_destroy - Destroy a device surface as part of a
* resource eviction process.
*
* @res: Pointer to a struct vmw_res embedded in a struct
* vmw_surface.
*/
static int vmw_legacy_srf_destroy(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
uint32_t submit_size;
uint8_t *cmd;
BUG_ON(res->id == -1);
/*
* Encode the dma- and surface destroy commands.
*/
submit_size = vmw_surface_destroy_size();
cmd = vmw_fifo_reserve(dev_priv, submit_size);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"eviction.\n");
return -ENOMEM;
}
vmw_surface_destroy_encode(res->id, cmd);
vmw_fifo_commit(dev_priv, submit_size);
/*
* Surface memory usage accounting.
*/
dev_priv->used_memory_size -= res->backup_size;
/*
* Release the surface ID.
*/
vmw_resource_release_id(res);
return 0;
}
/**
* vmw_surface_init - initialize a struct vmw_surface
*
* @dev_priv: Pointer to a device private struct.
* @srf: Pointer to the struct vmw_surface to initialize.
* @res_free: Pointer to a resource destructor used to free
* the object.
*/
static int vmw_surface_init(struct vmw_private *dev_priv,
struct vmw_surface *srf,
void (*res_free) (struct vmw_resource *res))
{
int ret;
struct vmw_resource *res = &srf->res;
BUG_ON(res_free == NULL);
(void) vmw_3d_resource_inc(dev_priv, false);
ret = vmw_resource_init(dev_priv, res, true, res_free,
&vmw_legacy_surface_func);
if (unlikely(ret != 0)) {
vmw_3d_resource_dec(dev_priv, false);
res_free(res);
return ret;
}
/*
* The surface won't be visible to hardware until a
* surface validate.
*/
vmw_resource_activate(res, vmw_hw_surface_destroy);
return ret;
}
/**
* vmw_user_surface_base_to_res - TTM base object to resource converter for
* user visible surfaces
*
* @base: Pointer to a TTM base object
*
* Returns the struct vmw_resource embedded in a struct vmw_surface
* for the user-visible object identified by the TTM base object @base.
*/
static struct vmw_resource *
vmw_user_surface_base_to_res(struct ttm_base_object *base)
{
return &(container_of(base, struct vmw_user_surface, base)->srf.res);
}
/**
* vmw_user_surface_free - User visible surface resource destructor
*
* @res: A struct vmw_resource embedded in a struct vmw_surface.
*/
static void vmw_user_surface_free(struct vmw_resource *res)
{
struct vmw_surface *srf = vmw_res_to_srf(res);
struct vmw_user_surface *user_srf =
container_of(srf, struct vmw_user_surface, srf);
struct vmw_private *dev_priv = srf->res.dev_priv;
uint32_t size = user_srf->size;
kfree(srf->offsets);
kfree(srf->sizes);
kfree(srf->snooper.image);
// ttm_base_object_kfree(user_srf, base);
ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
}
/**
* vmw_user_surface_free - User visible surface TTM base object destructor
*
* @p_base: Pointer to a pointer to a TTM base object
* embedded in a struct vmw_user_surface.
*
* Drops the base object's reference on its resource, and the
* pointer pointed to by *p_base is set to NULL.
*/
static void vmw_user_surface_base_release(struct ttm_base_object **p_base)
{
struct ttm_base_object *base = *p_base;
struct vmw_user_surface *user_srf =
container_of(base, struct vmw_user_surface, base);
struct vmw_resource *res = &user_srf->srf.res;
*p_base = NULL;
vmw_resource_unreference(&res);
}
#if 0
/**
* vmw_user_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_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_surface_create_arg *arg =
(union drm_vmw_surface_create_arg *)data;
struct drm_vmw_surface_create_req *req = &arg->req;
struct drm_vmw_surface_arg *rep = &arg->rep;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
struct drm_vmw_size __user *user_sizes;
int ret;
int i, j;
uint32_t cur_bo_offset;
struct drm_vmw_size *cur_size;
struct vmw_surface_offset *cur_offset;
uint32_t num_sizes;
uint32_t size;
struct vmw_master *vmaster = vmw_master(file_priv->master);
const struct svga3d_surface_desc *desc;
if (unlikely(vmw_user_surface_size == 0))
vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
128;
num_sizes = 0;
for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
num_sizes += req->mip_levels[i];
if (num_sizes > DRM_VMW_MAX_SURFACE_FACES *
DRM_VMW_MAX_MIP_LEVELS)
return -EINVAL;
size = vmw_user_surface_size + 128 +
ttm_round_pot(num_sizes * sizeof(struct drm_vmw_size)) +
ttm_round_pot(num_sizes * sizeof(struct vmw_surface_offset));
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->flags;
srf->format = req->format;
srf->scanout = req->scanout;
memcpy(srf
->mip_levels
, req
->mip_levels
, sizeof(srf
->mip_levels
)); srf->num_sizes = num_sizes;
user_srf->size = size;
srf->sizes = kmalloc(srf->num_sizes * sizeof(*srf->sizes), GFP_KERNEL);
if (unlikely(srf->sizes == NULL)) {
ret = -ENOMEM;
goto out_no_sizes;
}
srf->offsets = kmalloc(srf->num_sizes * sizeof(*srf->offsets),
GFP_KERNEL);
if (unlikely(srf->sizes == NULL)) {
ret = -ENOMEM;
goto out_no_offsets;
}
user_sizes = (struct drm_vmw_size __user *)(unsigned long)
req->size_addr;
ret = copy_from_user(srf->sizes, user_sizes,
srf->num_sizes * sizeof(*srf->sizes));
if (unlikely(ret != 0)) {
ret = -EFAULT;
goto out_no_copy;
}
srf->base_size = *srf->sizes;
srf->autogen_filter = SVGA3D_TEX_FILTER_NONE;
srf->multisample_count = 1;
cur_bo_offset = 0;
cur_offset = srf->offsets;
cur_size = srf->sizes;
for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
for (j = 0; j < srf->mip_levels[i]; ++j) {
uint32_t stride = svga3dsurface_calculate_pitch
(desc, cur_size);
cur_offset->face = i;
cur_offset->mip = j;
cur_offset->bo_offset = cur_bo_offset;
cur_bo_offset += svga3dsurface_get_image_buffer_size
(desc, cur_size, stride);
++cur_offset;
++cur_size;
}
}
res->backup_size = cur_bo_offset;
if (srf->scanout &&
srf->num_sizes == 1 &&
srf->sizes[0].width == 64 &&
srf->sizes[0].height == 64 &&
srf->format == SVGA3D_A8R8G8B8) {
srf->snooper.image = kmalloc(64 * 64 * 4, GFP_KERNEL);
/* clear the image */
if (srf->snooper.image) {
memset(srf
->snooper.
image, 0x00, 64 * 64 * 4); } else {
DRM_ERROR("Failed to allocate cursor_image\n");
ret = -ENOMEM;
goto out_no_copy;
}
} else {
srf->snooper.image = NULL;
}
srf->snooper.crtc = NULL;
user_srf->base.shareable = false;
user_srf->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;
tmp = vmw_resource_reference(&srf->res);
ret = ttm_base_object_init(tfile, &user_srf->base,
req->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->sid = user_srf->base.hash.key;
vmw_resource_unreference(&res);
ttm_read_unlock(&vmaster->lock);
return 0;
out_no_copy:
kfree(srf->offsets);
out_no_offsets:
kfree(srf->sizes);
out_no_sizes:
ttm_base_object_kfree(user_srf, base);
out_no_user_srf:
ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
out_unlock:
ttm_read_unlock(&vmaster->lock);
return ret;
}
/**
* vmw_user_surface_define_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_surface_reference_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
union drm_vmw_surface_reference_arg *arg =
(union drm_vmw_surface_reference_arg *)data;
struct drm_vmw_surface_arg *req = &arg->req;
struct drm_vmw_surface_create_req *rep = &arg->rep;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
struct vmw_surface *srf;
struct vmw_user_surface *user_srf;
struct drm_vmw_size __user *user_sizes;
struct ttm_base_object *base;
int ret = -EINVAL;
base = ttm_base_object_lookup(tfile, req->sid);
if (unlikely(base == NULL)) {
DRM_ERROR("Could not find surface to reference.\n");
return -EINVAL;
}
if (unlikely(base->object_type != VMW_RES_SURFACE))
goto out_bad_resource;
user_srf = container_of(base, struct vmw_user_surface, base);
srf = &user_srf->srf;
ret = ttm_ref_object_add(tfile, &user_srf->base, TTM_REF_USAGE, NULL);
if (unlikely(ret != 0)) {
DRM_ERROR("Could not add a reference to a surface.\n");
goto out_no_reference;
}
rep->flags = srf->flags;
rep->format = srf->format;
memcpy(rep
->mip_levels
, srf
->mip_levels
, sizeof(srf
->mip_levels
)); user_sizes = (struct drm_vmw_size __user *)(unsigned long)
rep->size_addr;
if (user_sizes)
ret = copy_to_user(user_sizes, srf->sizes,
srf->num_sizes * sizeof(*srf->sizes));
if (unlikely(ret != 0)) {
DRM_ERROR("copy_to_user failed %p %u\n",
user_sizes, srf->num_sizes);
ret = -EFAULT;
}
out_bad_resource:
out_no_reference:
ttm_base_object_unref(&base);
return ret;
}
#endif