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Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_surface.c')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_surface.c2097
1 files changed, 2097 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
new file mode 100644
index 000000000..50769528c
--- /dev/null
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
@@ -0,0 +1,2097 @@
+// 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;
+
+ *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_array_user((struct drm_vmw_size __user *)(unsigned long)
+ req->size_addr,
+ metadata->num_sizes, sizeof(*metadata->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) {
+ ret = vmw_gem_object_create(dev_priv,
+ res->backup_size,
+ &vmw_sys_placement,
+ true,
+ false,
+ &vmw_gem_destroy,
+ &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);
+
+ 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_user_bo_unref(&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 (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;
+}