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

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0 OR MIT
/**************************************************************************
*
* Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
*
* 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 <drm/ttm/ttm_placement.h>
#include "vmwgfx_drv.h"
#include "vmwgfx_resource_priv.h"
#include "vmwgfx_so.h"
#include "vmwgfx_binding.h"
#include "vmw_surface_cache.h"
#include "device_include/svga3d_surfacedefs.h"
#define SVGA3D_FLAGS_64(upper32, lower32) (((uint64_t)upper32 << 32) | lower32)
#define SVGA3D_FLAGS_UPPER_32(svga3d_flags) (svga3d_flags >> 32)
#define SVGA3D_FLAGS_LOWER_32(svga3d_flags) \
(svga3d_flags & ((uint64_t)U32_MAX))
/**
* struct vmw_user_surface - User-space visible surface resource
*
* @prime: The TTM prime object.
* @base: The TTM base object handling user-space visibility.
* @srf: The surface metadata.
* @master: Master of the creating client. Used for security check.
*/
struct vmw_user_surface {
struct ttm_prime_object prime;
struct vmw_surface srf;
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;
};
/**
* struct vmw_surface_dirty - Surface dirty-tracker
* @cache: Cached layout information of the surface.
* @num_subres: Number of subresources.
* @boxes: Array of SVGA3dBoxes indicating dirty regions. One per subresource.
*/
struct vmw_surface_dirty {
struct vmw_surface_cache cache;
u32 num_subres;
SVGA3dBox boxes[];
};
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 int
vmw_gb_surface_define_internal(struct drm_device *dev,
struct drm_vmw_gb_surface_create_ext_req *req,
struct drm_vmw_gb_surface_create_rep *rep,
struct drm_file *file_priv);
static int
vmw_gb_surface_reference_internal(struct drm_device *dev,
struct drm_vmw_surface_arg *req,
struct drm_vmw_gb_surface_ref_ext_rep *rep,
struct drm_file *file_priv);
static void vmw_surface_dirty_free(struct vmw_resource *res);
static int vmw_surface_dirty_alloc(struct vmw_resource *res);
static int vmw_surface_dirty_sync(struct vmw_resource *res);
static void vmw_surface_dirty_range_add(struct vmw_resource *res, size_t start,
size_t end);
static int vmw_surface_clean(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 const struct vmw_res_func vmw_legacy_surface_func = {
.res_type = vmw_res_surface,
.needs_backup = false,
.may_evict = true,
.prio = 1,
.dirty_prio = 1,
.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,
.prio = 1,
.dirty_prio = 2,
.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,
.dirty_alloc = vmw_surface_dirty_alloc,
.dirty_free = vmw_surface_dirty_free,
.dirty_sync = vmw_surface_dirty_sync,
.dirty_range_add = vmw_surface_dirty_range_add,
.clean = vmw_surface_clean,
};
/*
* 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->metadata.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->metadata.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->metadata.num_sizes *
sizeof(SVGA3dSize);
cmd->header.id = SVGA_3D_CMD_SURFACE_DEFINE;
cmd->header.size = cmd_len;
cmd->body.sid = srf->res.id;
/*
* Downcast of surfaceFlags, was upcasted when received from user-space,
* since driver internally stores as 64 bit.
* For legacy surface define only 32 bit flag is supported.
*/
cmd->body.surfaceFlags = (SVGA3dSurface1Flags)srf->metadata.flags;
cmd->body.format = srf->metadata.format;
for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
cmd->body.face[i].numMipLevels = srf->metadata.mip_levels[i];
cmd += 1;
cmd_size = (SVGA3dSize *) cmd;
src_size = srf->metadata.sizes;
for (i = 0; i < srf->metadata.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 SVGA3dSurfaceDesc *desc =
vmw_surface_get_desc(srf->metadata.format);
for (i = 0; i < srf->metadata.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->metadata.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 = vmw_surface_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 =
vmw_surface_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 resource count accordingly.
*/
static void vmw_hw_surface_destroy(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
void *cmd;
if (res->func->destroy == vmw_gb_surface_destroy) {
(void) vmw_gb_surface_destroy(res);
return;
}
if (res->id != -1) {
cmd = VMW_CMD_RESERVE(dev_priv, vmw_surface_destroy_size());
if (unlikely(!cmd))
return;
vmw_surface_destroy_encode(res->id, cmd);
vmw_cmd_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);
dev_priv->used_memory_size -= res->backup_size;
mutex_unlock(&dev_priv->cmdbuf_mutex);
}
}
/**
* 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_HB_MAX_SURFACE_IDS)) {
ret = -EBUSY;
goto out_no_fifo;
}
/*
* Encode surface define- commands.
*/
submit_size = vmw_surface_define_size(srf);
cmd = VMW_CMD_RESERVE(dev_priv, submit_size);
if (unlikely(!cmd)) {
ret = -ENOMEM;
goto out_no_fifo;
}
vmw_surface_define_encode(srf, cmd);
vmw_cmd_commit(dev_priv, submit_size);
vmw_fifo_resource_inc(dev_priv);
/*
* 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);
submit_size = vmw_surface_dma_size(srf);
cmd = VMW_CMD_RESERVE(dev_priv, submit_size);
if (unlikely(!cmd))
return -ENOMEM;
vmw_bo_get_guest_ptr(val_buf->bo, &ptr);
vmw_surface_dma_encode(srf, cmd, &ptr, bind);
vmw_cmd_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_bo_fence_single(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.
* @readback: Readback - only true if dirty
* @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_CMD_RESERVE(dev_priv, submit_size);
if (unlikely(!cmd))
return -ENOMEM;
vmw_surface_destroy_encode(res->id, cmd);
vmw_cmd_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);
vmw_fifo_resource_dec(dev_priv);
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);
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)) {
res_free(res);
return ret;
}
/*
* The surface won't be visible to hardware until a
* surface validate.
*/
INIT_LIST_HEAD(&srf->view_list);
res->hw_destroy = 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);
WARN_ON_ONCE(res->dirty);
if (user_srf->master)
drm_master_put(&user_srf->master);
kfree(srf->offsets);
kfree(srf->metadata.sizes);
kfree(srf->snooper.image);
ttm_prime_object_kfree(user_srf, prime);
}
/**
* vmw_user_surface_base_release - 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;
if (res && res->backup)
drm_gem_object_put(&res->backup->base.base);
*p_base = NULL;
vmw_resource_unreference(&res);
}
/**
* vmw_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);
}
/**
* vmw_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_surface_metadata *metadata;
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;
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;
const SVGA3dSurfaceDesc *desc;
num_sizes = 0;
for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
if (req->mip_levels[i] > DRM_VMW_MAX_MIP_LEVELS)
return -EINVAL;
num_sizes += req->mip_levels[i];
}
if (num_sizes > DRM_VMW_MAX_SURFACE_FACES * DRM_VMW_MAX_MIP_LEVELS ||
num_sizes == 0)
return -EINVAL;
desc = vmw_surface_get_desc(req->format);
if (unlikely(desc->blockDesc == SVGA3DBLOCKDESC_NONE)) {
VMW_DEBUG_USER("Invalid format %d for surface creation.\n",
req->format);
return -EINVAL;
}
user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
if (unlikely(!user_srf)) {
ret = -ENOMEM;
goto out_unlock;
}
srf = &user_srf->srf;
metadata = &srf->metadata;
res = &srf->res;
/* Driver internally stores as 64-bit flags */
metadata->flags = (SVGA3dSurfaceAllFlags)req->flags;
metadata->format = req->format;
metadata->scanout = req->scanout;
memcpy(metadata->mip_levels, req->mip_levels,
sizeof(metadata->mip_levels));
metadata->num_sizes = num_sizes;
metadata->sizes =
memdup_user((struct drm_vmw_size __user *)(unsigned long)
req->size_addr,
sizeof(*metadata->sizes) * metadata->num_sizes);
if (IS_ERR(metadata->sizes)) {
ret = PTR_ERR(metadata->sizes);
goto out_no_sizes;
}
srf->offsets = kmalloc_array(metadata->num_sizes, sizeof(*srf->offsets),
GFP_KERNEL);
if (unlikely(!srf->offsets)) {
ret = -ENOMEM;
goto out_no_offsets;
}
metadata->base_size = *srf->metadata.sizes;
metadata->autogen_filter = SVGA3D_TEX_FILTER_NONE;
metadata->multisample_count = 0;
metadata->multisample_pattern = SVGA3D_MS_PATTERN_NONE;
metadata->quality_level = SVGA3D_MS_QUALITY_NONE;
cur_bo_offset = 0;
cur_offset = srf->offsets;
cur_size = metadata->sizes;
for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
for (j = 0; j < metadata->mip_levels[i]; ++j) {
uint32_t stride = vmw_surface_calculate_pitch(
desc, cur_size);
cur_offset->face = i;
cur_offset->mip = j;
cur_offset->bo_offset = cur_bo_offset;
cur_bo_offset += vmw_surface_get_image_buffer_size
(desc, cur_size, stride);
++cur_offset;
++cur_size;
}
}
res->backup_size = cur_bo_offset;
if (metadata->scanout &&
metadata->num_sizes == 1 &&
metadata->sizes[0].width == 64 &&
metadata->sizes[0].height == 64 &&
metadata->format == SVGA3D_A8R8G8B8) {
srf->snooper.image = kzalloc(64 * 64 * 4, GFP_KERNEL);
if (!srf->snooper.image) {
DRM_ERROR("Failed to allocate cursor_image\n");
ret = -ENOMEM;
goto out_no_copy;
}
} else {
srf->snooper.image = NULL;
}
user_srf->prime.base.shareable = false;
user_srf->prime.base.tfile = NULL;
if (drm_is_primary_client(file_priv))
user_srf->master = drm_file_get_master(file_priv);
/**
* 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_gem_object_create_with_handle(dev_priv,
file_priv,
res->backup_size,
&backup_handle,
&res->backup);
if (unlikely(ret != 0)) {
vmw_resource_unreference(&res);
goto out_unlock;
}
vmw_bo_reference(res->backup);
/*
* We don't expose the handle to the userspace and surface
* already holds a gem reference
*/
drm_gem_handle_delete(file_priv, backup_handle);
}
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);
if (unlikely(ret != 0)) {
vmw_resource_unreference(&tmp);
vmw_resource_unreference(&res);
goto out_unlock;
}
rep->sid = user_srf->prime.base.handle;
vmw_resource_unreference(&res);
return 0;
out_no_copy:
kfree(srf->offsets);
out_no_offsets:
kfree(metadata->sizes);
out_no_sizes:
ttm_prime_object_kfree(user_srf, prime);
out_unlock:
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 {
handle = u_handle;
}
ret = -EINVAL;
base = ttm_base_object_lookup_for_ref(dev_priv->tdev, handle);
if (unlikely(!base)) {
VMW_DEBUG_USER("Could not find surface to reference.\n");
goto out_no_lookup;
}
if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE)) {
VMW_DEBUG_USER("Referenced object is not a surface.\n");
goto out_bad_resource;
}
if (handle_type != DRM_VMW_HANDLE_PRIME) {
bool require_exist = false;
user_srf = container_of(base, struct vmw_user_surface,
prime.base);
/* Error out if we are unauthenticated primary */
if (drm_is_primary_client(file_priv) &&
!file_priv->authenticated) {
ret = -EACCES;
goto out_bad_resource;
}
/*
* Make sure the surface creator has the same
* authenticating master, or is already registered with us.
*/
if (drm_is_primary_client(file_priv) &&
user_srf->master != file_priv->master)
require_exist = true;
if (unlikely(drm_is_render_client(file_priv)))
require_exist = true;
ret = ttm_ref_object_add(tfile, base, NULL, require_exist);
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);
return ret;
}
/**
* vmw_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_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;
/* Downcast of flags when sending back to user space */
rep->flags = (uint32_t)srf->metadata.flags;
rep->format = srf->metadata.format;
memcpy(rep->mip_levels, srf->metadata.mip_levels,
sizeof(srf->metadata.mip_levels));
user_sizes = (struct drm_vmw_size __user *)(unsigned long)
rep->size_addr;
if (user_sizes)
ret = copy_to_user(user_sizes, &srf->metadata.base_size,
sizeof(srf->metadata.base_size));
if (unlikely(ret != 0)) {
VMW_DEBUG_USER("copy_to_user failed %p %u\n", user_sizes,
srf->metadata.num_sizes);
ttm_ref_object_base_unref(tfile, base->handle);
ret = -EFAULT;
}
ttm_base_object_unref(&base);
return ret;
}
/**
* vmw_gb_surface_create - Encode a surface_define command.
*
* @res: Pointer to a struct vmw_resource embedded in a struct
* vmw_surface.
*/
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);
struct vmw_surface_metadata *metadata = &srf->metadata;
uint32_t cmd_len, cmd_id, submit_len;
int ret;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDefineGBSurface body;
} *cmd;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDefineGBSurface_v2 body;
} *cmd2;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDefineGBSurface_v3 body;
} *cmd3;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDefineGBSurface_v4 body;
} *cmd4;
if (likely(res->id != -1))
return 0;
vmw_fifo_resource_inc(dev_priv);
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;
}
if (has_sm5_context(dev_priv) && metadata->array_size > 0) {
cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE_V4;
cmd_len = sizeof(cmd4->body);
submit_len = sizeof(*cmd4);
} else if (has_sm4_1_context(dev_priv) && metadata->array_size > 0) {
cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE_V3;
cmd_len = sizeof(cmd3->body);
submit_len = sizeof(*cmd3);
} else if (metadata->array_size > 0) {
/* VMW_SM_4 support verified at creation time. */
cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE_V2;
cmd_len = sizeof(cmd2->body);
submit_len = sizeof(*cmd2);
} else {
cmd_id = SVGA_3D_CMD_DEFINE_GB_SURFACE;
cmd_len = sizeof(cmd->body);
submit_len = sizeof(*cmd);
}
cmd = VMW_CMD_RESERVE(dev_priv, submit_len);
cmd2 = (typeof(cmd2))cmd;
cmd3 = (typeof(cmd3))cmd;
cmd4 = (typeof(cmd4))cmd;
if (unlikely(!cmd)) {
ret = -ENOMEM;
goto out_no_fifo;
}
if (has_sm5_context(dev_priv) && metadata->array_size > 0) {
cmd4->header.id = cmd_id;
cmd4->header.size = cmd_len;
cmd4->body.sid = srf->res.id;
cmd4->body.surfaceFlags = metadata->flags;
cmd4->body.format = metadata->format;
cmd4->body.numMipLevels = metadata->mip_levels[0];
cmd4->body.multisampleCount = metadata->multisample_count;
cmd4->body.multisamplePattern = metadata->multisample_pattern;
cmd4->body.qualityLevel = metadata->quality_level;
cmd4->body.autogenFilter = metadata->autogen_filter;
cmd4->body.size.width = metadata->base_size.width;
cmd4->body.size.height = metadata->base_size.height;
cmd4->body.size.depth = metadata->base_size.depth;
cmd4->body.arraySize = metadata->array_size;
cmd4->body.bufferByteStride = metadata->buffer_byte_stride;
} else if (has_sm4_1_context(dev_priv) && metadata->array_size > 0) {
cmd3->header.id = cmd_id;
cmd3->header.size = cmd_len;
cmd3->body.sid = srf->res.id;
cmd3->body.surfaceFlags = metadata->flags;
cmd3->body.format = metadata->format;
cmd3->body.numMipLevels = metadata->mip_levels[0];
cmd3->body.multisampleCount = metadata->multisample_count;
cmd3->body.multisamplePattern = metadata->multisample_pattern;
cmd3->body.qualityLevel = metadata->quality_level;
cmd3->body.autogenFilter = metadata->autogen_filter;
cmd3->body.size.width = metadata->base_size.width;
cmd3->body.size.height = metadata->base_size.height;
cmd3->body.size.depth = metadata->base_size.depth;
cmd3->body.arraySize = metadata->array_size;
} else if (metadata->array_size > 0) {
cmd2->header.id = cmd_id;
cmd2->header.size = cmd_len;
cmd2->body.sid = srf->res.id;
cmd2->body.surfaceFlags = metadata->flags;
cmd2->body.format = metadata->format;
cmd2->body.numMipLevels = metadata->mip_levels[0];
cmd2->body.multisampleCount = metadata->multisample_count;
cmd2->body.autogenFilter = metadata->autogen_filter;
cmd2->body.size.width = metadata->base_size.width;
cmd2->body.size.height = metadata->base_size.height;
cmd2->body.size.depth = metadata->base_size.depth;
cmd2->body.arraySize = metadata->array_size;
} else {
cmd->header.id = cmd_id;
cmd->header.size = cmd_len;
cmd->body.sid = srf->res.id;
cmd->body.surfaceFlags = metadata->flags;
cmd->body.format = metadata->format;
cmd->body.numMipLevels = metadata->mip_levels[0];
cmd->body.multisampleCount = metadata->multisample_count;
cmd->body.autogenFilter = metadata->autogen_filter;
cmd->body.size.width = metadata->base_size.width;
cmd->body.size.height = metadata->base_size.height;
cmd->body.size.depth = metadata->base_size.depth;
}
vmw_cmd_commit(dev_priv, submit_len);
return 0;
out_no_fifo:
vmw_resource_release_id(res);
out_no_id:
vmw_fifo_resource_dec(dev_priv);
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->resource->mem_type != VMW_PL_MOB);
submit_size = sizeof(*cmd1) + (res->backup_dirty ? sizeof(*cmd2) : 0);
cmd1 = VMW_CMD_RESERVE(dev_priv, submit_size);
if (unlikely(!cmd1))
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->resource->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;
}
vmw_cmd_commit(dev_priv, submit_size);
if (res->backup->dirty && res->backup_dirty) {
/* We've just made a full upload. Cear dirty regions. */
vmw_bo_dirty_clear_res(res);
}
res->backup_dirty = false;
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->resource->mem_type != VMW_PL_MOB);
submit_size = sizeof(*cmd3) + (readback ? sizeof(*cmd1) : sizeof(*cmd2));
cmd = VMW_CMD_RESERVE(dev_priv, submit_size);
if (unlikely(!cmd))
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_cmd_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_bo_fence_single(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 vmw_surface *srf = vmw_res_to_srf(res);
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDestroyGBSurface body;
} *cmd;
if (likely(res->id == -1))
return 0;
mutex_lock(&dev_priv->binding_mutex);
vmw_view_surface_list_destroy(dev_priv, &srf->view_list);
vmw_binding_res_list_scrub(&res->binding_head);
cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
if (unlikely(!cmd)) {
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_cmd_commit(dev_priv, sizeof(*cmd));
mutex_unlock(&dev_priv->binding_mutex);
vmw_resource_release_id(res);
vmw_fifo_resource_dec(dev_priv);
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)
{
union drm_vmw_gb_surface_create_arg *arg =
(union drm_vmw_gb_surface_create_arg *)data;
struct drm_vmw_gb_surface_create_rep *rep = &arg->rep;
struct drm_vmw_gb_surface_create_ext_req req_ext;
req_ext.base = arg->req;
req_ext.version = drm_vmw_gb_surface_v1;
req_ext.svga3d_flags_upper_32_bits = 0;
req_ext.multisample_pattern = SVGA3D_MS_PATTERN_NONE;
req_ext.quality_level = SVGA3D_MS_QUALITY_NONE;
req_ext.buffer_byte_stride = 0;
req_ext.must_be_zero = 0;
return vmw_gb_surface_define_internal(dev, &req_ext, rep, file_priv);
}
/**
* 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)
{
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 drm_vmw_gb_surface_ref_ext_rep rep_ext;
int ret;
ret = vmw_gb_surface_reference_internal(dev, req, &rep_ext, file_priv);
if (unlikely(ret != 0))
return ret;
rep->creq = rep_ext.creq.base;
rep->crep = rep_ext.crep;
return ret;
}
/**
* vmw_gb_surface_define_ext_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_ext_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
union drm_vmw_gb_surface_create_ext_arg *arg =
(union drm_vmw_gb_surface_create_ext_arg *)data;
struct drm_vmw_gb_surface_create_ext_req *req = &arg->req;
struct drm_vmw_gb_surface_create_rep *rep = &arg->rep;
return vmw_gb_surface_define_internal(dev, req, rep, file_priv);
}
/**
* vmw_gb_surface_reference_ext_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_ext_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
union drm_vmw_gb_surface_reference_ext_arg *arg =
(union drm_vmw_gb_surface_reference_ext_arg *)data;
struct drm_vmw_surface_arg *req = &arg->req;
struct drm_vmw_gb_surface_ref_ext_rep *rep = &arg->rep;
return vmw_gb_surface_reference_internal(dev, req, rep, file_priv);
}
/**
* vmw_gb_surface_define_internal - Ioctl function implementing
* the user surface define functionality.
*
* @dev: Pointer to a struct drm_device.
* @req: Request argument from user-space.
* @rep: Response argument to user-space.
* @file_priv: Pointer to a drm file private structure.
*/
static int
vmw_gb_surface_define_internal(struct drm_device *dev,
struct drm_vmw_gb_surface_create_ext_req *req,
struct drm_vmw_gb_surface_create_rep *rep,
struct drm_file *file_priv)
{
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
struct vmw_private *dev_priv = vmw_priv(dev);
struct vmw_user_surface *user_srf;
struct vmw_surface_metadata metadata = {0};
struct vmw_surface *srf;
struct vmw_resource *res;
struct vmw_resource *tmp;
int ret = 0;
uint32_t backup_handle = 0;
SVGA3dSurfaceAllFlags svga3d_flags_64 =
SVGA3D_FLAGS_64(req->svga3d_flags_upper_32_bits,
req->base.svga3d_flags);
/* array_size must be null for non-GL3 host. */
if (req->base.array_size > 0 && !has_sm4_context(dev_priv)) {
VMW_DEBUG_USER("SM4 surface not supported.\n");
return -EINVAL;
}
if (!has_sm4_1_context(dev_priv)) {
if (req->svga3d_flags_upper_32_bits != 0)
ret = -EINVAL;
if (req->base.multisample_count != 0)
ret = -EINVAL;
if (req->multisample_pattern != SVGA3D_MS_PATTERN_NONE)
ret = -EINVAL;
if (req->quality_level != SVGA3D_MS_QUALITY_NONE)
ret = -EINVAL;
if (ret) {
VMW_DEBUG_USER("SM4.1 surface not supported.\n");
return ret;
}
}
if (req->buffer_byte_stride > 0 && !has_sm5_context(dev_priv)) {
VMW_DEBUG_USER("SM5 surface not supported.\n");
return -EINVAL;
}
if ((svga3d_flags_64 & SVGA3D_SURFACE_MULTISAMPLE) &&
req->base.multisample_count == 0) {
VMW_DEBUG_USER("Invalid sample count.\n");
return -EINVAL;
}
if (req->base.mip_levels > DRM_VMW_MAX_MIP_LEVELS) {
VMW_DEBUG_USER("Invalid mip level.\n");
return -EINVAL;
}
metadata.flags = svga3d_flags_64;
metadata.format = req->base.format;
metadata.mip_levels[0] = req->base.mip_levels;
metadata.multisample_count = req->base.multisample_count;
metadata.multisample_pattern = req->multisample_pattern;
metadata.quality_level = req->quality_level;
metadata.array_size = req->base.array_size;
metadata.buffer_byte_stride = req->buffer_byte_stride;
metadata.num_sizes = 1;
metadata.base_size = req->base.base_size;
metadata.scanout = req->base.drm_surface_flags &
drm_vmw_surface_flag_scanout;
/* Define a surface based on the parameters. */
ret = vmw_gb_surface_define(dev_priv, &metadata, &srf);
if (ret != 0) {
VMW_DEBUG_USER("Failed to define surface.\n");
return ret;
}
user_srf = container_of(srf, struct vmw_user_surface, srf);
if (drm_is_primary_client(file_priv))
user_srf->master = drm_file_get_master(file_priv);
res = &user_srf->srf.res;
if (req->base.buffer_handle != SVGA3D_INVALID_ID) {
ret = vmw_user_bo_lookup(file_priv, req->base.buffer_handle,
&res->backup);
if (ret == 0) {
if (res->backup->base.base.size < res->backup_size) {
VMW_DEBUG_USER("Surface backup buffer too small.\n");
vmw_bo_unreference(&res->backup);
ret = -EINVAL;
goto out_unlock;
} else {
backup_handle = req->base.buffer_handle;
}
}
} else if (req->base.drm_surface_flags &
(drm_vmw_surface_flag_create_buffer |
drm_vmw_surface_flag_coherent)) {
ret = vmw_gem_object_create_with_handle(dev_priv, file_priv,
res->backup_size,
&backup_handle,
&res->backup);
if (ret == 0)
vmw_bo_reference(res->backup);
}
if (unlikely(ret != 0)) {
vmw_resource_unreference(&res);
goto out_unlock;
}
if (req->base.drm_surface_flags & drm_vmw_surface_flag_coherent) {
struct vmw_buffer_object *backup = res->backup;
ttm_bo_reserve(&backup->base, false, false, NULL);
if (!res->func->dirty_alloc)
ret = -EINVAL;
if (!ret)
ret = vmw_bo_dirty_add(backup);
if (!ret) {
res->coherent = true;
ret = res->func->dirty_alloc(res);
}
ttm_bo_unreserve(&backup->base);
if (ret) {
vmw_resource_unreference(&res);
goto out_unlock;
}
}
tmp = vmw_resource_reference(res);
ret = ttm_prime_object_init(tfile, res->backup_size, &user_srf->prime,
req->base.drm_surface_flags &
drm_vmw_surface_flag_shareable,
VMW_RES_SURFACE,
&vmw_user_surface_base_release);
if (unlikely(ret != 0)) {
vmw_resource_unreference(&tmp);
vmw_resource_unreference(&res);
goto out_unlock;
}
rep->handle = user_srf->prime.base.handle;
rep->backup_size = res->backup_size;
if (res->backup) {
rep->buffer_map_handle =
drm_vma_node_offset_addr(&res->backup->base.base.vma_node);
rep->buffer_size = res->backup->base.base.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);
out_unlock:
return ret;
}
/**
* vmw_gb_surface_reference_internal - Ioctl function implementing
* the user surface reference functionality.
*
* @dev: Pointer to a struct drm_device.
* @req: Pointer to user-space request surface arg.
* @rep: Pointer to response to user-space.
* @file_priv: Pointer to a drm file private structure.
*/
static int
vmw_gb_surface_reference_internal(struct drm_device *dev,
struct drm_vmw_surface_arg *req,
struct drm_vmw_gb_surface_ref_ext_rep *rep,
struct drm_file *file_priv)
{
struct vmw_private *dev_priv = vmw_priv(dev);
struct vmw_surface *srf;
struct vmw_user_surface *user_srf;
struct vmw_surface_metadata *metadata;
struct ttm_base_object *base;
u32 backup_handle;
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;
if (!srf->res.backup) {
DRM_ERROR("Shared GB surface is missing a backup buffer.\n");
goto out_bad_resource;
}
metadata = &srf->metadata;
mutex_lock(&dev_priv->cmdbuf_mutex); /* Protect res->backup */
ret = drm_gem_handle_create(file_priv, &srf->res.backup->base.base,
&backup_handle);
mutex_unlock(&dev_priv->cmdbuf_mutex);
if (ret != 0) {
drm_err(dev, "Wasn't able to create a backing handle for surface sid = %u.\n",
req->sid);
goto out_bad_resource;
}
rep->creq.base.svga3d_flags = SVGA3D_FLAGS_LOWER_32(metadata->flags);
rep->creq.base.format = metadata->format;
rep->creq.base.mip_levels = metadata->mip_levels[0];
rep->creq.base.drm_surface_flags = 0;
rep->creq.base.multisample_count = metadata->multisample_count;
rep->creq.base.autogen_filter = metadata->autogen_filter;
rep->creq.base.array_size = metadata->array_size;
rep->creq.base.buffer_handle = backup_handle;
rep->creq.base.base_size = metadata->base_size;
rep->crep.handle = user_srf->prime.base.handle;
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.base.vma_node);
rep->crep.buffer_size = srf->res.backup->base.base.size;
rep->creq.version = drm_vmw_gb_surface_v1;
rep->creq.svga3d_flags_upper_32_bits =
SVGA3D_FLAGS_UPPER_32(metadata->flags);
rep->creq.multisample_pattern = metadata->multisample_pattern;
rep->creq.quality_level = metadata->quality_level;
rep->creq.must_be_zero = 0;
out_bad_resource:
ttm_base_object_unref(&base);
return ret;
}
/**
* vmw_subres_dirty_add - Add a dirty region to a subresource
* @dirty: The surfaces's dirty tracker.
* @loc_start: The location corresponding to the start of the region.
* @loc_end: The location corresponding to the end of the region.
*
* As we are assuming that @loc_start and @loc_end represent a sequential
* range of backing store memory, if the region spans multiple lines then
* regardless of the x coordinate, the full lines are dirtied.
* Correspondingly if the region spans multiple z slices, then full rather
* than partial z slices are dirtied.
*/
static void vmw_subres_dirty_add(struct vmw_surface_dirty *dirty,
const struct vmw_surface_loc *loc_start,
const struct vmw_surface_loc *loc_end)
{
const struct vmw_surface_cache *cache = &dirty->cache;
SVGA3dBox *box = &dirty->boxes[loc_start->sub_resource];
u32 mip = loc_start->sub_resource % cache->num_mip_levels;
const struct drm_vmw_size *size = &cache->mip[mip].size;
u32 box_c2 = box->z + box->d;
if (WARN_ON(loc_start->sub_resource >= dirty->num_subres))
return;
if (box->d == 0 || box->z > loc_start->z)
box->z = loc_start->z;
if (box_c2 < loc_end->z)
box->d = loc_end->z - box->z;
if (loc_start->z + 1 == loc_end->z) {
box_c2 = box->y + box->h;
if (box->h == 0 || box->y > loc_start->y)
box->y = loc_start->y;
if (box_c2 < loc_end->y)
box->h = loc_end->y - box->y;
if (loc_start->y + 1 == loc_end->y) {
box_c2 = box->x + box->w;
if (box->w == 0 || box->x > loc_start->x)
box->x = loc_start->x;
if (box_c2 < loc_end->x)
box->w = loc_end->x - box->x;
} else {
box->x = 0;
box->w = size->width;
}
} else {
box->y = 0;
box->h = size->height;
box->x = 0;
box->w = size->width;
}
}
/**
* vmw_subres_dirty_full - Mark a full subresource as dirty
* @dirty: The surface's dirty tracker.
* @subres: The subresource
*/
static void vmw_subres_dirty_full(struct vmw_surface_dirty *dirty, u32 subres)
{
const struct vmw_surface_cache *cache = &dirty->cache;
u32 mip = subres % cache->num_mip_levels;
const struct drm_vmw_size *size = &cache->mip[mip].size;
SVGA3dBox *box = &dirty->boxes[subres];
box->x = 0;
box->y = 0;
box->z = 0;
box->w = size->width;
box->h = size->height;
box->d = size->depth;
}
/*
* vmw_surface_tex_dirty_add_range - The dirty_add_range callback for texture
* surfaces.
*/
static void vmw_surface_tex_dirty_range_add(struct vmw_resource *res,
size_t start, size_t end)
{
struct vmw_surface_dirty *dirty =
(struct vmw_surface_dirty *) res->dirty;
size_t backup_end = res->backup_offset + res->backup_size;
struct vmw_surface_loc loc1, loc2;
const struct vmw_surface_cache *cache;
start = max_t(size_t, start, res->backup_offset) - res->backup_offset;
end = min(end, backup_end) - res->backup_offset;
cache = &dirty->cache;
vmw_surface_get_loc(cache, &loc1, start);
vmw_surface_get_loc(cache, &loc2, end - 1);
vmw_surface_inc_loc(cache, &loc2);
if (loc1.sheet != loc2.sheet) {
u32 sub_res;
/*
* Multiple multisample sheets. To do this in an optimized
* fashion, compute the dirty region for each sheet and the
* resulting union. Since this is not a common case, just dirty
* the whole surface.
*/
for (sub_res = 0; sub_res < dirty->num_subres; ++sub_res)
vmw_subres_dirty_full(dirty, sub_res);
return;
}
if (loc1.sub_resource + 1 == loc2.sub_resource) {
/* Dirty range covers a single sub-resource */
vmw_subres_dirty_add(dirty, &loc1, &loc2);
} else {
/* Dirty range covers multiple sub-resources */
struct vmw_surface_loc loc_min, loc_max;
u32 sub_res;
vmw_surface_max_loc(cache, loc1.sub_resource, &loc_max);
vmw_subres_dirty_add(dirty, &loc1, &loc_max);
vmw_surface_min_loc(cache, loc2.sub_resource - 1, &loc_min);
vmw_subres_dirty_add(dirty, &loc_min, &loc2);
for (sub_res = loc1.sub_resource + 1;
sub_res < loc2.sub_resource - 1; ++sub_res)
vmw_subres_dirty_full(dirty, sub_res);
}
}
/*
* vmw_surface_tex_dirty_add_range - The dirty_add_range callback for buffer
* surfaces.
*/
static void vmw_surface_buf_dirty_range_add(struct vmw_resource *res,
size_t start, size_t end)
{
struct vmw_surface_dirty *dirty =
(struct vmw_surface_dirty *) res->dirty;
const struct vmw_surface_cache *cache = &dirty->cache;
size_t backup_end = res->backup_offset + cache->mip_chain_bytes;
SVGA3dBox *box = &dirty->boxes[0];
u32 box_c2;
box->h = box->d = 1;
start = max_t(size_t, start, res->backup_offset) - res->backup_offset;
end = min(end, backup_end) - res->backup_offset;
box_c2 = box->x + box->w;
if (box->w == 0 || box->x > start)
box->x = start;
if (box_c2 < end)
box->w = end - box->x;
}
/*
* vmw_surface_tex_dirty_add_range - The dirty_add_range callback for surfaces
*/
static void vmw_surface_dirty_range_add(struct vmw_resource *res, size_t start,
size_t end)
{
struct vmw_surface *srf = vmw_res_to_srf(res);
if (WARN_ON(end <= res->backup_offset ||
start >= res->backup_offset + res->backup_size))
return;
if (srf->metadata.format == SVGA3D_BUFFER)
vmw_surface_buf_dirty_range_add(res, start, end);
else
vmw_surface_tex_dirty_range_add(res, start, end);
}
/*
* vmw_surface_dirty_sync - The surface's dirty_sync callback.
*/
static int vmw_surface_dirty_sync(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
u32 i, num_dirty;
struct vmw_surface_dirty *dirty =
(struct vmw_surface_dirty *) res->dirty;
size_t alloc_size;
const struct vmw_surface_cache *cache = &dirty->cache;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDXUpdateSubResource body;
} *cmd1;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdUpdateGBImage body;
} *cmd2;
void *cmd;
num_dirty = 0;
for (i = 0; i < dirty->num_subres; ++i) {
const SVGA3dBox *box = &dirty->boxes[i];
if (box->d)
num_dirty++;
}
if (!num_dirty)
goto out;
alloc_size = num_dirty * ((has_sm4_context(dev_priv)) ? sizeof(*cmd1) : sizeof(*cmd2));
cmd = VMW_CMD_RESERVE(dev_priv, alloc_size);
if (!cmd)
return -ENOMEM;
cmd1 = cmd;
cmd2 = cmd;
for (i = 0; i < dirty->num_subres; ++i) {
const SVGA3dBox *box = &dirty->boxes[i];
if (!box->d)
continue;
/*
* DX_UPDATE_SUBRESOURCE is aware of array surfaces.
* UPDATE_GB_IMAGE is not.
*/
if (has_sm4_context(dev_priv)) {
cmd1->header.id = SVGA_3D_CMD_DX_UPDATE_SUBRESOURCE;
cmd1->header.size = sizeof(cmd1->body);
cmd1->body.sid = res->id;
cmd1->body.subResource = i;
cmd1->body.box = *box;
cmd1++;
} else {
cmd2->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
cmd2->header.size = sizeof(cmd2->body);
cmd2->body.image.sid = res->id;
cmd2->body.image.face = i / cache->num_mip_levels;
cmd2->body.image.mipmap = i -
(cache->num_mip_levels * cmd2->body.image.face);
cmd2->body.box = *box;
cmd2++;
}
}
vmw_cmd_commit(dev_priv, alloc_size);
out:
memset(&dirty->boxes[0], 0, sizeof(dirty->boxes[0]) *
dirty->num_subres);
return 0;
}
/*
* vmw_surface_dirty_alloc - The surface's dirty_alloc callback.
*/
static int vmw_surface_dirty_alloc(struct vmw_resource *res)
{
struct vmw_surface *srf = vmw_res_to_srf(res);
const struct vmw_surface_metadata *metadata = &srf->metadata;
struct vmw_surface_dirty *dirty;
u32 num_layers = 1;
u32 num_mip;
u32 num_subres;
u32 num_samples;
size_t dirty_size;
int ret;
if (metadata->array_size)
num_layers = metadata->array_size;
else if (metadata->flags & SVGA3D_SURFACE_CUBEMAP)
num_layers *= SVGA3D_MAX_SURFACE_FACES;
num_mip = metadata->mip_levels[0];
if (!num_mip)
num_mip = 1;
num_subres = num_layers * num_mip;
dirty_size = struct_size(dirty, boxes, num_subres);
dirty = kvzalloc(dirty_size, GFP_KERNEL);
if (!dirty) {
ret = -ENOMEM;
goto out_no_dirty;
}
num_samples = max_t(u32, 1, metadata->multisample_count);
ret = vmw_surface_setup_cache(&metadata->base_size, metadata->format,
num_mip, num_layers, num_samples,
&dirty->cache);
if (ret)
goto out_no_cache;
dirty->num_subres = num_subres;
res->dirty = (struct vmw_resource_dirty *) dirty;
return 0;
out_no_cache:
kvfree(dirty);
out_no_dirty:
return ret;
}
/*
* vmw_surface_dirty_free - The surface's dirty_free callback
*/
static void vmw_surface_dirty_free(struct vmw_resource *res)
{
struct vmw_surface_dirty *dirty =
(struct vmw_surface_dirty *) res->dirty;
kvfree(dirty);
res->dirty = NULL;
}
/*
* vmw_surface_clean - The surface's clean callback
*/
static int vmw_surface_clean(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
size_t alloc_size;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdReadbackGBSurface body;
} *cmd;
alloc_size = sizeof(*cmd);
cmd = VMW_CMD_RESERVE(dev_priv, alloc_size);
if (!cmd)
return -ENOMEM;
cmd->header.id = SVGA_3D_CMD_READBACK_GB_SURFACE;
cmd->header.size = sizeof(cmd->body);
cmd->body.sid = res->id;
vmw_cmd_commit(dev_priv, alloc_size);
return 0;
}
/*
* vmw_gb_surface_define - Define a private GB surface
*
* @dev_priv: Pointer to a device private.
* @metadata: Metadata representing the surface to create.
* @user_srf_out: allocated user_srf. Set to NULL on failure.
*
* GB surfaces allocated by this function will not have a user mode handle, and
* thus will only be visible to vmwgfx. For optimization reasons the
* surface may later be given a user mode handle by another function to make
* it available to user mode drivers.
*/
int vmw_gb_surface_define(struct vmw_private *dev_priv,
const struct vmw_surface_metadata *req,
struct vmw_surface **srf_out)
{
struct vmw_surface_metadata *metadata;
struct vmw_user_surface *user_srf;
struct vmw_surface *srf;
u32 sample_count = 1;
u32 num_layers = 1;
int ret;
*srf_out = NULL;
if (req->scanout) {
if (!vmw_surface_is_screen_target_format(req->format)) {
VMW_DEBUG_USER("Invalid Screen Target surface format.");
return -EINVAL;
}
if (req->base_size.width > dev_priv->texture_max_width ||
req->base_size.height > dev_priv->texture_max_height) {
VMW_DEBUG_USER("%ux%u\n, exceed max surface size %ux%u",
req->base_size.width,
req->base_size.height,
dev_priv->texture_max_width,
dev_priv->texture_max_height);
return -EINVAL;
}
} else {
const SVGA3dSurfaceDesc *desc =
vmw_surface_get_desc(req->format);
if (desc->blockDesc == SVGA3DBLOCKDESC_NONE) {
VMW_DEBUG_USER("Invalid surface format.\n");
return -EINVAL;
}
}
if (req->autogen_filter != SVGA3D_TEX_FILTER_NONE)
return -EINVAL;
if (req->num_sizes != 1)
return -EINVAL;
if (req->sizes != NULL)
return -EINVAL;
user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL);
if (unlikely(!user_srf)) {
ret = -ENOMEM;
goto out_unlock;
}
*srf_out = &user_srf->srf;
user_srf->prime.base.shareable = false;
user_srf->prime.base.tfile = NULL;
srf = &user_srf->srf;
srf->metadata = *req;
srf->offsets = NULL;
metadata = &srf->metadata;
if (metadata->array_size)
num_layers = req->array_size;
else if (metadata->flags & SVGA3D_SURFACE_CUBEMAP)
num_layers = SVGA3D_MAX_SURFACE_FACES;
if (metadata->flags & SVGA3D_SURFACE_MULTISAMPLE)
sample_count = metadata->multisample_count;
srf->res.backup_size =
vmw_surface_get_serialized_size_extended(
metadata->format,
metadata->base_size,
metadata->mip_levels[0],
num_layers,
sample_count);
if (metadata->flags & SVGA3D_SURFACE_BIND_STREAM_OUTPUT)
srf->res.backup_size += sizeof(SVGA3dDXSOState);
/*
* Don't set SVGA3D_SURFACE_SCREENTARGET flag for a scanout surface with
* size greater than STDU max width/height. This is really a workaround
* to support creation of big framebuffer requested by some user-space
* for whole topology. That big framebuffer won't really be used for
* binding with screen target as during prepare_fb a separate surface is
* created so it's safe to ignore SVGA3D_SURFACE_SCREENTARGET flag.
*/
if (dev_priv->active_display_unit == vmw_du_screen_target &&
metadata->scanout &&
metadata->base_size.width <= dev_priv->stdu_max_width &&
metadata->base_size.height <= dev_priv->stdu_max_height)
metadata->flags |= SVGA3D_SURFACE_SCREENTARGET;
/*
* From this point, the generic resource management functions
* destroy the object on failure.
*/
ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
return ret;
out_unlock:
return ret;
}