From: Thomas Hellstrom <thellst...@vmware.com>
Add the callbacks necessary to implement emulated coherent memory for
surfaces. Add a flag to the gb_surface_create ioctl to indicate that
surface memory should be coherent.
Also bump the drm minor version to signal the availability of coherent
surfaces.
Signed-off-by: Thomas Hellstrom <thellst...@vmware.com>
Reviewed-by: Deepak Rawat <dra...@vmware.com>
---
.../device_include/svga3d_surfacedefs.h | 233 ++++++++++-
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 4 +-
drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | 395 +++++++++++++++++-
include/uapi/drm/vmwgfx_drm.h | 4 +-
4 files changed, 629 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/device_include/svga3d_surfacedefs.h
b/drivers/gpu/drm/vmwgfx/device_include/svga3d_surfacedefs.h
index f2bfd3d80598..61414f105c67 100644
--- a/drivers/gpu/drm/vmwgfx/device_include/svga3d_surfacedefs.h
+++ b/drivers/gpu/drm/vmwgfx/device_include/svga3d_surfacedefs.h
@@ -1280,7 +1280,6 @@ svga3dsurface_get_pixel_offset(SVGA3dSurfaceFormat format,
return offset;
}
-
static inline u32
svga3dsurface_get_image_offset(SVGA3dSurfaceFormat format,
surf_size_struct baseLevelSize,
@@ -1375,4 +1374,236 @@
svga3dsurface_is_screen_target_format(SVGA3dSurfaceFormat format)
return svga3dsurface_is_dx_screen_target_format(format);
}
+/**
+ * struct svga3dsurface_mip - Mimpmap level information
+ * @bytes: Bytes required in the backing store of this mipmap level.
+ * @img_stride: Byte stride per image.
+ * @row_stride: Byte stride per block row.
+ * @size: The size of the mipmap.
+ */
+struct svga3dsurface_mip {
+ size_t bytes;
+ size_t img_stride;
+ size_t row_stride;
+ struct drm_vmw_size size;
+
+};
+
+/**
+ * struct svga3dsurface_cache - Cached surface information
+ * @desc: Pointer to the surface descriptor
+ * @mip: Array of mipmap level information. Valid size is @num_mip_levels.
+ * @mip_chain_bytes: Bytes required in the backing store for the whole chain
+ * of mip levels.
+ * @sheet_bytes: Bytes required in the backing store for a sheet
+ * representing a single sample.
+ * @num_mip_levels: Valid size of the @mip array. Number of mipmap levels in
+ * a chain.
+ * @num_layers: Number of slices in an array texture or number of faces in
+ * a cubemap texture.
+ */
+struct svga3dsurface_cache {
+ const struct svga3d_surface_desc *desc;
+ struct svga3dsurface_mip mip[DRM_VMW_MAX_MIP_LEVELS];
+ size_t mip_chain_bytes;
+ size_t sheet_bytes;
+ u32 num_mip_levels;
+ u32 num_layers;
+};
+
+/**
+ * struct svga3dsurface_loc - Surface location
+ * @sub_resource: Surface subresource. Defined as layer * num_mip_levels +
+ * mip_level.
+ * @x: X coordinate.
+ * @y: Y coordinate.
+ * @z: Z coordinate.
+ */
+struct svga3dsurface_loc {
+ u32 sub_resource;
+ u32 x, y, z;
+};
+
+/**
+ * svga3dsurface_subres - Compute the subresource from layer and mipmap.
+ * @cache: Surface layout data.
+ * @mip_level: The mipmap level.
+ * @layer: The surface layer (face or array slice).
+ *
+ * Return: The subresource.
+ */
+static inline u32 svga3dsurface_subres(const struct svga3dsurface_cache *cache,
+ u32 mip_level, u32 layer)
+{
+ return cache->num_mip_levels * layer + mip_level;
+}
+
+/**
+ * svga3dsurface_setup_cache - Build a surface cache entry
+ * @size: The surface base level dimensions.
+ * @format: The surface format.
+ * @num_mip_levels: Number of mipmap levels.
+ * @num_layers: Number of layers.
+ * @cache: Pointer to a struct svga3dsurface_cach object to be filled in.
+ *
+ * Return: Zero on success, -EINVAL on invalid surface layout.
+ */
+static inline int svga3dsurface_setup_cache(const struct drm_vmw_size *size,
+ SVGA3dSurfaceFormat format,
+ u32 num_mip_levels,
+ u32 num_layers,
+ u32 num_samples,
+ struct svga3dsurface_cache *cache)
+{
+ const struct svga3d_surface_desc *desc;
+ u32 i;
+
+ memset(cache, 0, sizeof(*cache));
+ cache->desc = desc = svga3dsurface_get_desc(format);
+ cache->num_mip_levels = num_mip_levels;
+ cache->num_layers = num_layers;
+ for (i = 0; i < cache->num_mip_levels; i++) {
+ struct svga3dsurface_mip *mip = &cache->mip[i];
+
+ mip->size = svga3dsurface_get_mip_size(*size, i);
+ mip->bytes = svga3dsurface_get_image_buffer_size
+ (desc, &mip->size, 0);
+ mip->row_stride =
+ __KERNEL_DIV_ROUND_UP(mip->size.width,
+ desc->block_size.width) *
+ desc->bytes_per_block * num_samples;
+ if (!mip->row_stride)
+ goto invalid_dim;
+
+ mip->img_stride =
+ __KERNEL_DIV_ROUND_UP(mip->size.height,
+ desc->block_size.height) *
+ mip->row_stride;
+ if (!mip->img_stride)
+ goto invalid_dim;
+
+ cache->mip_chain_bytes += mip->bytes;
+ }
+ cache->sheet_bytes = cache->mip_chain_bytes * num_layers;
+ if (!cache->sheet_bytes)
+ goto invalid_dim;
+
+ return 0;
+
+invalid_dim:
+ VMW_DEBUG_USER("Invalid surface layout for dirty tracking.\n");
+ return -EINVAL;
+}
+
+/**
+ * svga3dsurface_get_loc - Get a surface location from an offset into the
+ * backing store
+ * @cache: Surface layout data.
+ * @loc: Pointer to a struct svga3dsurface_loc to be filled in.
+ * @offset: Offset into the surface backing store.
+ */
+static inline void
+svga3dsurface_get_loc(const struct svga3dsurface_cache *cache,
+ struct svga3dsurface_loc *loc,
+ size_t offset)
+{
+ const struct svga3dsurface_mip *mip = &cache->mip[0];
+ const struct svga3d_surface_desc *desc = cache->desc;
+ u32 layer;
+ int i;
+
+ if (offset >= cache->sheet_bytes)
+ offset %= cache->sheet_bytes;
+
+ layer = offset / cache->mip_chain_bytes;
+ offset -= layer * cache->mip_chain_bytes;
+ for (i = 0; i < cache->num_mip_levels; ++i, ++mip) {
+ if (mip->bytes > offset)
+ break;
+ offset -= mip->bytes;
+ }
+
+ loc->sub_resource = svga3dsurface_subres(cache, i, layer);
+ loc->z = offset / mip->img_stride;
+ offset -= loc->z * mip->img_stride;
+ loc->z *= desc->block_size.depth;
+ loc->y = offset / mip->row_stride;
+ offset -= loc->y * mip->row_stride;
+ loc->y *= desc->block_size.height;
+ loc->x = offset / desc->bytes_per_block;
+ loc->x *= desc->block_size.width;
+}
+
+/**
+ * svga3dsurface_inc_loc - Clamp increment a surface location with one block
+ * size
+ * in each dimension.
+ * @loc: Pointer to a struct svga3dsurface_loc to be incremented.
+ *
+ * When computing the size of a range as size = end - start, the range does not
+ * include the end element. However a location representing the last byte
+ * of a touched region in the backing store *is* included in the range.
+ * This function modifies such a location to match the end definition
+ * given as start + size which is the one used in a SVGA3dBox.
+ */
+static inline void
+svga3dsurface_inc_loc(const struct svga3dsurface_cache *cache,
+ struct svga3dsurface_loc *loc)
+{
+ const struct svga3d_surface_desc *desc = cache->desc;
+ u32 mip = loc->sub_resource % cache->num_mip_levels;
+ const struct drm_vmw_size *size = &cache->mip[mip].size;
+
+ loc->sub_resource++;
+ loc->x += desc->block_size.width;
+ if (loc->x > size->width)
+ loc->x = size->width;
+ loc->y += desc->block_size.height;
+ if (loc->y > size->height)
+ loc->y = size->height;
+ loc->z += desc->block_size.depth;
+ if (loc->z > size->depth)
+ loc->z = size->depth;
+}
+
+/**
+ * svga3dsurface_min_loc - The start location in a subresource
+ * @cache: Surface layout data.
+ * @sub_resource: The subresource.
+ * @loc: Pointer to a struct svga3dsurface_loc to be filled in.
+ */
+static inline void
+svga3dsurface_min_loc(const struct svga3dsurface_cache *cache,
+ u32 sub_resource,
+ struct svga3dsurface_loc *loc)
+{
+ loc->sub_resource = sub_resource;
+ loc->x = loc->y = loc->z = 0;
+}
+
+/**
+ * svga3dsurface_min_loc - The end location in a subresource
+ * @cache: Surface layout data.
+ * @sub_resource: The subresource.
+ * @loc: Pointer to a struct svga3dsurface_loc to be filled in.
+ *
+ * Following the end definition given in svga3dsurface_inc_loc(),
+ * Compute the end location of a surface subresource.
+ */
+static inline void
+svga3dsurface_max_loc(const struct svga3dsurface_cache *cache,
+ u32 sub_resource,
+ struct svga3dsurface_loc *loc)
+{
+ const struct drm_vmw_size *size;
+ u32 mip;
+
+ loc->sub_resource = sub_resource + 1;
+ mip = sub_resource % cache->num_mip_levels;
+ size = &cache->mip[mip].size;
+ loc->x = size->width;
+ loc->y = size->height;
+ loc->z = size->depth;
+}
+
#endif /* _SVGA3D_SURFACEDEFS_H_ */
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index dae3a39bf402..5971c0d47507 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -44,9 +44,9 @@
#include <linux/sync_file.h>
#define VMWGFX_DRIVER_NAME "vmwgfx"
-#define VMWGFX_DRIVER_DATE "20180704"
+#define VMWGFX_DRIVER_DATE "20190328"
#define VMWGFX_DRIVER_MAJOR 2
-#define VMWGFX_DRIVER_MINOR 15
+#define VMWGFX_DRIVER_MINOR 16
#define VMWGFX_DRIVER_PATCHLEVEL 0
#define VMWGFX_FIFO_STATIC_SIZE (1024*1024)
#define VMWGFX_MAX_RELOCATIONS 2048
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
index c40d44f4d9af..637043f1befa 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
@@ -68,6 +68,20 @@ struct vmw_surface_offset {
uint32_t bo_offset;
};
+/**
+ * vmw_surface_dirty - Surface dirty-tracker
+ * @cache: Cached layout information of the surface.
+ * @size: Accounting size for the struct vmw_surface_dirty.
+ * @num_subres: Number of subresources.
+ * @boxes: Array of SVGA3dBoxes indicating dirty regions. One per subresource.
+ */
+struct vmw_surface_dirty {
+ struct svga3dsurface_cache cache;
+ size_t size;
+ u32 num_subres;
+ SVGA3dBox boxes[0];
+};
+
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);
@@ -96,6 +110,13 @@ vmw_gb_surface_reference_internal(struct drm_device *dev,
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,
@@ -133,7 +154,12 @@ static const struct vmw_res_func vmw_gb_surface_func = {
.create = vmw_gb_surface_create,
.destroy = vmw_gb_surface_destroy,
.bind = vmw_gb_surface_bind,
- .unbind = vmw_gb_surface_unbind
+ .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,
};
/**
@@ -641,6 +667,7 @@ static void vmw_user_surface_free(struct vmw_resource *res)
struct vmw_private *dev_priv = srf->res.dev_priv;
uint32_t size = user_srf->size;
+ WARN_ON_ONCE(res->dirty);
if (user_srf->master)
drm_master_put(&user_srf->master);
kfree(srf->offsets);
@@ -1174,10 +1201,16 @@ static int vmw_gb_surface_bind(struct vmw_resource *res,
cmd2->header.id = SVGA_3D_CMD_UPDATE_GB_SURFACE;
cmd2->header.size = sizeof(cmd2->body);
cmd2->body.sid = res->id;
- res->backup_dirty = false;
}
vmw_fifo_commit(dev_priv, submit_size);
+ 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;
}
@@ -1642,7 +1675,8 @@ vmw_gb_surface_define_internal(struct drm_device *dev,
}
}
} else if (req->base.drm_surface_flags &
- drm_vmw_surface_flag_create_buffer)
+ (drm_vmw_surface_flag_create_buffer |
+ drm_vmw_surface_flag_coherent))
ret = vmw_user_bo_alloc(dev_priv, tfile,
res->backup_size,
req->base.drm_surface_flags &
@@ -1656,6 +1690,26 @@ vmw_gb_surface_define_internal(struct drm_device *dev,
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 &
@@ -1764,3 +1818,338 @@ vmw_gb_surface_reference_internal(struct drm_device
*dev,
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 svga3dsurface_loc *loc_start,
+ const struct svga3dsurface_loc *loc_end)
+{
+ const struct svga3dsurface_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 svga3dsurface_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 svga3dsurface_loc loc1, loc2;
+ const struct svga3dsurface_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;
+ svga3dsurface_get_loc(cache, &loc1, start);
+ svga3dsurface_get_loc(cache, &loc2, end - 1);
+ svga3dsurface_inc_loc(cache, &loc2);
+
+ 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 svga3dsurface_loc loc_min, loc_max;
+ u32 sub_res = loc1.sub_resource;
+
+ svga3dsurface_max_loc(cache, loc1.sub_resource, &loc_max);
+ vmw_subres_dirty_add(dirty, &loc1, &loc_max);
+ svga3dsurface_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 svga3dsurface_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->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;
+ bool has_dx = 0;
+ u32 i, num_dirty;
+ struct vmw_surface_dirty *dirty =
+ (struct vmw_surface_dirty *) res->dirty;
+ size_t alloc_size;
+ const struct svga3dsurface_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_dx) ? sizeof(*cmd1) : sizeof(*cmd2));
+ cmd = VMW_FIFO_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_dx) {
+ 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_fifo_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);
+ struct vmw_surface_dirty *dirty;
+ u32 num_layers = 1;
+ u32 num_mip;
+ u32 num_subres;
+ u32 num_samples;
+ size_t dirty_size, acc_size;
+ static struct ttm_operation_ctx ctx = {
+ .interruptible = false,
+ .no_wait_gpu = false
+ };
+ int ret;
+
+ if (srf->array_size)
+ num_layers = srf->array_size;
+ else if (srf->flags & SVGA3D_SURFACE_CUBEMAP)
+ num_layers *= SVGA3D_MAX_SURFACE_FACES;
+
+ num_mip = srf->mip_levels[0];
+ if (!num_mip)
+ num_mip = 1;
+
+ num_subres = num_layers * num_mip;
+ dirty_size = sizeof(*dirty) + num_subres * sizeof(dirty->boxes[0]);
+ acc_size = ttm_round_pot(dirty_size);
+ ret = ttm_mem_global_alloc(vmw_mem_glob(res->dev_priv),
+ acc_size, &ctx);
+ if (ret) {
+ VMW_DEBUG_USER("Out of graphics memory for surface "
+ "dirty tracker.\n");
+ return ret;
+ }
+
+ dirty = kvzalloc(dirty_size, GFP_KERNEL);
+ if (!dirty) {
+ ret = -ENOMEM;
+ goto out_no_dirty;
+ }
+
+ num_samples = max_t(u32, 1, srf->multisample_count);
+ ret = svga3dsurface_setup_cache(&srf->base_size, srf->format, num_mip,
+ num_layers, num_samples, &dirty->cache);
+ if (ret)
+ goto out_no_cache;
+
+ dirty->num_subres = num_subres;
+ dirty->size = acc_size;
+ res->dirty = (struct vmw_resource_dirty *) dirty;
+
+ return 0;
+
+out_no_cache:
+ kvfree(dirty);
+out_no_dirty:
+ ttm_mem_global_free(vmw_mem_glob(res->dev_priv), acc_size);
+ 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;
+ size_t acc_size = dirty->size;
+
+ kvfree(dirty);
+ ttm_mem_global_free(vmw_mem_glob(res->dev_priv), acc_size);
+ 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_FIFO_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_fifo_commit(dev_priv, alloc_size);
+
+ return 0;
+}
diff --git a/include/uapi/drm/vmwgfx_drm.h b/include/uapi/drm/vmwgfx_drm.h
index 399f58317cff..02cab33f2f25 100644
--- a/include/uapi/drm/vmwgfx_drm.h
+++ b/include/uapi/drm/vmwgfx_drm.h
@@ -891,11 +891,13 @@ struct drm_vmw_shader_arg {
* surface.
* @drm_vmw_surface_flag_create_buffer: Create a backup buffer if none is
* given.
+ * @drm_vmw_surface_flag_coherent: Back surface with coherent memory.
*/
enum drm_vmw_surface_flags {
drm_vmw_surface_flag_shareable = (1 << 0),
drm_vmw_surface_flag_scanout = (1 << 1),
- drm_vmw_surface_flag_create_buffer = (1 << 2)
+ drm_vmw_surface_flag_create_buffer = (1 << 2),
+ drm_vmw_surface_flag_coherent = (1 << 3),
};
/**
--
2.20.1
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