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linux/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c

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/**************************************************************************
*
* 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.
* @master: master of the creating client. Used for security check.
*/
struct vmw_user_surface {
struct ttm_prime_object prime;
struct vmw_surface srf;
uint32_t size;
struct drm_master *master;
};
/**
* 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 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,
.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
};
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
*/
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->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());
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);
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)) {
if (!dev_priv->has_mob)
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,
prime.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;
if (user_srf->master)
drm_master_put(&user_srf->master);
kfree(srf->offsets);
kfree(srf->sizes);
kfree(srf->snooper.image);
ttm_prime_object_kfree(user_srf, prime);
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, prime.base);
struct vmw_resource *res = &user_srf->srf.res;
*p_base = NULL;
vmw_resource_unreference(&res);
}
/**
* vmw_user_surface_destroy_ioctl - Ioctl function implementing
* the user surface destroy 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_destroy_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_vmw_surface_arg *arg = (struct drm_vmw_surface_arg *)data;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
return ttm_ref_object_base_unref(tfile, arg->sid, TTM_REF_USAGE);
}
/**
* 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;
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(&dev_priv->reservation_sem, 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 = 0;
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->prime.base.shareable = false;
user_srf->prime.base.tfile = NULL;
if (drm_is_primary_client(file_priv))
user_srf->master = drm_master_get(file_priv->master);
/**
* 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;
/*
* A gb-aware client referencing a shared surface will
* expect a backup buffer to be present.
*/
if (dev_priv->has_mob && req->shareable) {
uint32_t backup_handle;
ret = vmw_user_dmabuf_alloc(dev_priv, tfile,
res->backup_size,
true,
&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->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->prime.base.hash.key;
vmw_resource_unreference(&res);
ttm_read_unlock(&dev_priv->reservation_sem);
return 0;
out_no_copy:
kfree(srf->offsets);
out_no_offsets:
kfree(srf->sizes);
out_no_sizes:
ttm_prime_object_kfree(user_srf, prime);
out_no_user_srf:
ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
out_unlock:
ttm_read_unlock(&dev_priv->reservation_sem);
return ret;
}
static int
vmw_surface_handle_reference(struct vmw_private *dev_priv,
struct drm_file *file_priv,
uint32_t u_handle,
enum drm_vmw_handle_type handle_type,
struct ttm_base_object **base_p)
{
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
struct vmw_user_surface *user_srf;
uint32_t handle;
struct ttm_base_object *base;
int ret;
if (handle_type == DRM_VMW_HANDLE_PRIME) {
ret = ttm_prime_fd_to_handle(tfile, u_handle, &handle);
if (unlikely(ret != 0))
return ret;
} else {
if (unlikely(drm_is_render_client(file_priv))) {
DRM_ERROR("Render client refused legacy "
"surface reference.\n");
return -EACCES;
}
handle = u_handle;
}
ret = -EINVAL;
base = ttm_base_object_lookup_for_ref(dev_priv->tdev, handle);
if (unlikely(base == NULL)) {
DRM_ERROR("Could not find surface to reference.\n");
goto out_no_lookup;
}
if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE)) {
DRM_ERROR("Referenced object is not a surface.\n");
goto out_bad_resource;
}
if (handle_type != DRM_VMW_HANDLE_PRIME) {
user_srf = container_of(base, struct vmw_user_surface,
prime.base);
/*
* Make sure the surface creator has the same
* authenticating master.
*/
if (drm_is_primary_client(file_priv) &&
user_srf->master != file_priv->master) {
DRM_ERROR("Trying to reference surface outside of"
" master domain.\n");
ret = -EACCES;
goto out_bad_resource;
}
ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL);
if (unlikely(ret != 0)) {
DRM_ERROR("Could not add a reference to a surface.\n");
goto out_bad_resource;
}
}
*base_p = base;
return 0;
out_bad_resource:
ttm_base_object_unref(&base);
out_no_lookup:
if (handle_type == DRM_VMW_HANDLE_PRIME)
(void) ttm_ref_object_base_unref(tfile, handle, TTM_REF_USAGE);
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)
{
struct vmw_private *dev_priv = vmw_priv(dev);
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;
ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
req->handle_type, &base);
if (unlikely(ret != 0))
return ret;
user_srf = container_of(base, struct vmw_user_surface, prime.base);
srf = &user_srf->srf;
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->base_size,
sizeof(srf->base_size));
if (unlikely(ret != 0)) {
DRM_ERROR("copy_to_user failed %p %u\n",
user_sizes, srf->num_sizes);
ttm_ref_object_base_unref(tfile, base->hash.key, TTM_REF_USAGE);
ret = -EFAULT;
}
ttm_base_object_unref(&base);
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;
SVGA3dCmdInvalidateGBSurface body;
} *cmd2;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdBindGBSurface body;
} *cmd3;
uint32_t submit_size;
uint8_t *cmd;
BUG_ON(bo->mem.mem_type != VMW_PL_MOB);
submit_size = sizeof(*cmd3) + (readback ? sizeof(*cmd1) : sizeof(*cmd2));
cmd = vmw_fifo_reserve(dev_priv, submit_size);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"unbinding.\n");
return -ENOMEM;
}
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;
cmd3 = (void *) &cmd1[1];
} else {
cmd2 = (void *) cmd;
cmd2->header.id = SVGA_3D_CMD_INVALIDATE_GB_SURFACE;
cmd2->header.size = sizeof(cmd2->body);
cmd2->body.sid = res->id;
cmd3 = (void *) &cmd2[1];
}
cmd3->header.id = SVGA_3D_CMD_BIND_GB_SURFACE;
cmd3->header.size = sizeof(cmd3->body);
cmd3->body.sid = res->id;
cmd3->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;
mutex_lock(&dev_priv->binding_mutex);
vmw_context_binding_res_list_scrub(&res->binding_head);
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"destruction.\n");
mutex_unlock(&dev_priv->binding_mutex);
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));
mutex_unlock(&dev_priv->binding_mutex);
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;
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(&dev_priv->reservation_sem, 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;
if (drm_is_primary_client(file_priv))
user_srf->master = drm_master_get(file_priv->master);
/**
* 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(&dev_priv->reservation_sem);
return 0;
out_no_user_srf:
ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
out_unlock:
ttm_read_unlock(&dev_priv->reservation_sem);
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;
ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
req->handle_type, &base);
if (unlikely(ret != 0))
return ret;
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;
}
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(tfile, base->hash.key,
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;
}
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