| /************************************************************************** |
| * |
| * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sub license, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| **************************************************************************/ |
| |
| #include "vmwgfx_drv.h" |
| #include <drm/vmwgfx_drm.h> |
| #include <drm/ttm/ttm_object.h> |
| #include <drm/ttm/ttm_placement.h> |
| #include <drm/drmP.h> |
| |
| /** |
| * struct vmw_user_resource_conv - Identify a derived user-exported resource |
| * type and provide a function to convert its ttm_base_object pointer to |
| * a struct vmw_resource |
| */ |
| struct vmw_user_resource_conv { |
| enum ttm_object_type object_type; |
| struct vmw_resource *(*base_obj_to_res)(struct ttm_base_object *base); |
| void (*res_free) (struct vmw_resource *res); |
| }; |
| |
| /** |
| * struct vmw_res_func - members and functions common for a resource type |
| * |
| * @res_type: Enum that identifies the lru list to use for eviction. |
| * @needs_backup: Whether the resource is guest-backed and needs |
| * persistent buffer storage. |
| * @type_name: String that identifies the resource type. |
| * @backup_placement: TTM placement for backup buffers. |
| * @may_evict Whether the resource may be evicted. |
| * @create: Create a hardware resource. |
| * @destroy: Destroy a hardware resource. |
| * @bind: Bind a hardware resource to persistent buffer storage. |
| * @unbind: Unbind a hardware resource from persistent |
| * buffer storage. |
| */ |
| |
| struct vmw_res_func { |
| enum vmw_res_type res_type; |
| bool needs_backup; |
| const char *type_name; |
| struct ttm_placement *backup_placement; |
| bool may_evict; |
| |
| int (*create) (struct vmw_resource *res); |
| int (*destroy) (struct vmw_resource *res); |
| int (*bind) (struct vmw_resource *res, |
| struct ttm_validate_buffer *val_buf); |
| int (*unbind) (struct vmw_resource *res, |
| bool readback, |
| struct ttm_validate_buffer *val_buf); |
| }; |
| |
| struct vmw_user_dma_buffer { |
| struct ttm_base_object base; |
| struct vmw_dma_buffer dma; |
| }; |
| |
| struct vmw_bo_user_rep { |
| uint32_t handle; |
| uint64_t map_handle; |
| }; |
| |
| struct vmw_stream { |
| struct vmw_resource res; |
| uint32_t stream_id; |
| }; |
| |
| struct vmw_user_stream { |
| struct ttm_base_object base; |
| struct vmw_stream stream; |
| }; |
| |
| |
| static uint64_t vmw_user_stream_size; |
| |
| static const struct vmw_res_func vmw_stream_func = { |
| .res_type = vmw_res_stream, |
| .needs_backup = false, |
| .may_evict = false, |
| .type_name = "video streams", |
| .backup_placement = NULL, |
| .create = NULL, |
| .destroy = NULL, |
| .bind = NULL, |
| .unbind = NULL |
| }; |
| |
| struct vmw_user_context { |
| struct ttm_base_object base; |
| struct vmw_resource res; |
| }; |
| |
| static void vmw_user_context_free(struct vmw_resource *res); |
| static struct vmw_resource * |
| vmw_user_context_base_to_res(struct ttm_base_object *base); |
| |
| static uint64_t vmw_user_context_size; |
| |
| static const struct vmw_user_resource_conv user_context_conv = { |
| .object_type = VMW_RES_CONTEXT, |
| .base_obj_to_res = vmw_user_context_base_to_res, |
| .res_free = vmw_user_context_free |
| }; |
| |
| const struct vmw_user_resource_conv *user_context_converter = |
| &user_context_conv; |
| |
| |
| static const struct vmw_res_func vmw_legacy_context_func = { |
| .res_type = vmw_res_context, |
| .needs_backup = false, |
| .may_evict = false, |
| .type_name = "legacy contexts", |
| .backup_placement = NULL, |
| .create = NULL, |
| .destroy = NULL, |
| .bind = NULL, |
| .unbind = NULL |
| }; |
| |
| |
| /** |
| * struct vmw_user_surface - User-space visible surface resource |
| * |
| * @base: The TTM base object handling user-space visibility. |
| * @srf: The surface metadata. |
| * @size: TTM accounting size for the surface. |
| */ |
| struct vmw_user_surface { |
| struct ttm_base_object base; |
| struct vmw_surface srf; |
| uint32_t size; |
| uint32_t backup_handle; |
| }; |
| |
| /** |
| * struct vmw_surface_offset - Backing store mip level offset info |
| * |
| * @face: Surface face. |
| * @mip: Mip level. |
| * @bo_offset: Offset into backing store of this mip level. |
| * |
| */ |
| struct vmw_surface_offset { |
| uint32_t face; |
| uint32_t mip; |
| uint32_t bo_offset; |
| }; |
| |
| static void vmw_user_surface_free(struct vmw_resource *res); |
| static struct vmw_resource * |
| vmw_user_surface_base_to_res(struct ttm_base_object *base); |
| static int vmw_legacy_srf_bind(struct vmw_resource *res, |
| struct ttm_validate_buffer *val_buf); |
| static int vmw_legacy_srf_unbind(struct vmw_resource *res, |
| bool readback, |
| struct ttm_validate_buffer *val_buf); |
| static int vmw_legacy_srf_create(struct vmw_resource *res); |
| static int vmw_legacy_srf_destroy(struct vmw_resource *res); |
| |
| static const struct vmw_user_resource_conv user_surface_conv = { |
| .object_type = VMW_RES_SURFACE, |
| .base_obj_to_res = vmw_user_surface_base_to_res, |
| .res_free = vmw_user_surface_free |
| }; |
| |
| const struct vmw_user_resource_conv *user_surface_converter = |
| &user_surface_conv; |
| |
| |
| static uint64_t vmw_user_surface_size; |
| |
| static const struct vmw_res_func vmw_legacy_surface_func = { |
| .res_type = vmw_res_surface, |
| .needs_backup = false, |
| .may_evict = true, |
| .type_name = "legacy surfaces", |
| .backup_placement = &vmw_srf_placement, |
| .create = &vmw_legacy_srf_create, |
| .destroy = &vmw_legacy_srf_destroy, |
| .bind = &vmw_legacy_srf_bind, |
| .unbind = &vmw_legacy_srf_unbind |
| }; |
| |
| |
| static inline struct vmw_dma_buffer * |
| vmw_dma_buffer(struct ttm_buffer_object *bo) |
| { |
| return container_of(bo, struct vmw_dma_buffer, base); |
| } |
| |
| static inline struct vmw_user_dma_buffer * |
| vmw_user_dma_buffer(struct ttm_buffer_object *bo) |
| { |
| struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo); |
| return container_of(vmw_bo, struct vmw_user_dma_buffer, dma); |
| } |
| |
| struct vmw_resource *vmw_resource_reference(struct vmw_resource *res) |
| { |
| kref_get(&res->kref); |
| return res; |
| } |
| |
| |
| /** |
| * vmw_resource_release_id - release a resource id to the id manager. |
| * |
| * @res: Pointer to the resource. |
| * |
| * Release the resource id to the resource id manager and set it to -1 |
| */ |
| static void vmw_resource_release_id(struct vmw_resource *res) |
| { |
| struct vmw_private *dev_priv = res->dev_priv; |
| struct idr *idr = &dev_priv->res_idr[res->func->res_type]; |
| |
| write_lock(&dev_priv->resource_lock); |
| if (res->id != -1) |
| idr_remove(idr, res->id); |
| res->id = -1; |
| write_unlock(&dev_priv->resource_lock); |
| } |
| |
| static void vmw_resource_release(struct kref *kref) |
| { |
| struct vmw_resource *res = |
| container_of(kref, struct vmw_resource, kref); |
| struct vmw_private *dev_priv = res->dev_priv; |
| int id; |
| struct idr *idr = &dev_priv->res_idr[res->func->res_type]; |
| |
| res->avail = false; |
| list_del_init(&res->lru_head); |
| write_unlock(&dev_priv->resource_lock); |
| if (res->backup) { |
| struct ttm_buffer_object *bo = &res->backup->base; |
| |
| ttm_bo_reserve(bo, false, false, false, 0); |
| if (!list_empty(&res->mob_head) && |
| res->func->unbind != NULL) { |
| struct ttm_validate_buffer val_buf; |
| |
| val_buf.bo = bo; |
| res->func->unbind(res, false, &val_buf); |
| } |
| res->backup_dirty = false; |
| list_del_init(&res->mob_head); |
| ttm_bo_unreserve(bo); |
| vmw_dmabuf_unreference(&res->backup); |
| } |
| |
| if (likely(res->hw_destroy != NULL)) |
| res->hw_destroy(res); |
| |
| id = res->id; |
| if (res->res_free != NULL) |
| res->res_free(res); |
| else |
| kfree(res); |
| |
| write_lock(&dev_priv->resource_lock); |
| |
| if (id != -1) |
| idr_remove(idr, id); |
| } |
| |
| void vmw_resource_unreference(struct vmw_resource **p_res) |
| { |
| struct vmw_resource *res = *p_res; |
| struct vmw_private *dev_priv = res->dev_priv; |
| |
| *p_res = NULL; |
| write_lock(&dev_priv->resource_lock); |
| kref_put(&res->kref, vmw_resource_release); |
| write_unlock(&dev_priv->resource_lock); |
| } |
| |
| |
| /** |
| * vmw_resource_alloc_id - release a resource id to the id manager. |
| * |
| * @res: Pointer to the resource. |
| * |
| * Allocate the lowest free resource from the resource manager, and set |
| * @res->id to that id. Returns 0 on success and -ENOMEM on failure. |
| */ |
| static int vmw_resource_alloc_id(struct vmw_resource *res) |
| { |
| struct vmw_private *dev_priv = res->dev_priv; |
| int ret; |
| struct idr *idr = &dev_priv->res_idr[res->func->res_type]; |
| |
| BUG_ON(res->id != -1); |
| |
| do { |
| if (unlikely(idr_pre_get(idr, GFP_KERNEL) == 0)) |
| return -ENOMEM; |
| |
| write_lock(&dev_priv->resource_lock); |
| ret = idr_get_new_above(idr, res, 1, &res->id); |
| write_unlock(&dev_priv->resource_lock); |
| |
| } while (ret == -EAGAIN); |
| |
| return ret; |
| } |
| |
| /** |
| * vmw_resource_init - initialize a struct vmw_resource |
| * |
| * @dev_priv: Pointer to a device private struct. |
| * @res: The struct vmw_resource to initialize. |
| * @obj_type: Resource object type. |
| * @delay_id: Boolean whether to defer device id allocation until |
| * the first validation. |
| * @res_free: Resource destructor. |
| * @func: Resource function table. |
| */ |
| static int vmw_resource_init(struct vmw_private *dev_priv, |
| struct vmw_resource *res, |
| bool delay_id, |
| void (*res_free) (struct vmw_resource *res), |
| const struct vmw_res_func *func) |
| { |
| kref_init(&res->kref); |
| res->hw_destroy = NULL; |
| res->res_free = res_free; |
| res->avail = false; |
| res->dev_priv = dev_priv; |
| res->func = func; |
| INIT_LIST_HEAD(&res->lru_head); |
| INIT_LIST_HEAD(&res->mob_head); |
| res->id = -1; |
| res->backup = NULL; |
| res->backup_offset = 0; |
| res->backup_dirty = false; |
| res->res_dirty = false; |
| if (delay_id) |
| return 0; |
| else |
| return vmw_resource_alloc_id(res); |
| } |
| |
| /** |
| * vmw_resource_activate |
| * |
| * @res: Pointer to the newly created resource |
| * @hw_destroy: Destroy function. NULL if none. |
| * |
| * Activate a resource after the hardware has been made aware of it. |
| * Set tye destroy function to @destroy. Typically this frees the |
| * resource and destroys the hardware resources associated with it. |
| * Activate basically means that the function vmw_resource_lookup will |
| * find it. |
| */ |
| static void vmw_resource_activate(struct vmw_resource *res, |
| void (*hw_destroy) (struct vmw_resource *)) |
| { |
| struct vmw_private *dev_priv = res->dev_priv; |
| |
| write_lock(&dev_priv->resource_lock); |
| res->avail = true; |
| res->hw_destroy = hw_destroy; |
| write_unlock(&dev_priv->resource_lock); |
| } |
| |
| struct vmw_resource *vmw_resource_lookup(struct vmw_private *dev_priv, |
| struct idr *idr, int id) |
| { |
| struct vmw_resource *res; |
| |
| read_lock(&dev_priv->resource_lock); |
| res = idr_find(idr, id); |
| if (res && res->avail) |
| kref_get(&res->kref); |
| else |
| res = NULL; |
| read_unlock(&dev_priv->resource_lock); |
| |
| if (unlikely(res == NULL)) |
| return NULL; |
| |
| return res; |
| } |
| |
| /** |
| * Context management: |
| */ |
| |
| static void vmw_hw_context_destroy(struct vmw_resource *res) |
| { |
| |
| struct vmw_private *dev_priv = res->dev_priv; |
| struct { |
| SVGA3dCmdHeader header; |
| SVGA3dCmdDestroyContext body; |
| } *cmd; |
| |
| |
| vmw_execbuf_release_pinned_bo(dev_priv); |
| cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); |
| if (unlikely(cmd == NULL)) { |
| DRM_ERROR("Failed reserving FIFO space for surface " |
| "destruction.\n"); |
| return; |
| } |
| |
| cmd->header.id = cpu_to_le32(SVGA_3D_CMD_CONTEXT_DESTROY); |
| cmd->header.size = cpu_to_le32(sizeof(cmd->body)); |
| cmd->body.cid = cpu_to_le32(res->id); |
| |
| vmw_fifo_commit(dev_priv, sizeof(*cmd)); |
| vmw_3d_resource_dec(dev_priv, false); |
| } |
| |
| static int vmw_context_init(struct vmw_private *dev_priv, |
| struct vmw_resource *res, |
| void (*res_free) (struct vmw_resource *res)) |
| { |
| int ret; |
| |
| struct { |
| SVGA3dCmdHeader header; |
| SVGA3dCmdDefineContext body; |
| } *cmd; |
| |
| ret = vmw_resource_init(dev_priv, res, false, |
| res_free, &vmw_legacy_context_func); |
| |
| if (unlikely(ret != 0)) { |
| DRM_ERROR("Failed to allocate a resource id.\n"); |
| goto out_early; |
| } |
| |
| if (unlikely(res->id >= SVGA3D_MAX_CONTEXT_IDS)) { |
| DRM_ERROR("Out of hw context ids.\n"); |
| vmw_resource_unreference(&res); |
| return -ENOMEM; |
| } |
| |
| cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); |
| if (unlikely(cmd == NULL)) { |
| DRM_ERROR("Fifo reserve failed.\n"); |
| vmw_resource_unreference(&res); |
| return -ENOMEM; |
| } |
| |
| cmd->header.id = cpu_to_le32(SVGA_3D_CMD_CONTEXT_DEFINE); |
| cmd->header.size = cpu_to_le32(sizeof(cmd->body)); |
| cmd->body.cid = cpu_to_le32(res->id); |
| |
| vmw_fifo_commit(dev_priv, sizeof(*cmd)); |
| (void) vmw_3d_resource_inc(dev_priv, false); |
| vmw_resource_activate(res, vmw_hw_context_destroy); |
| return 0; |
| |
| out_early: |
| if (res_free == NULL) |
| kfree(res); |
| else |
| res_free(res); |
| return ret; |
| } |
| |
| struct vmw_resource *vmw_context_alloc(struct vmw_private *dev_priv) |
| { |
| struct vmw_resource *res = kmalloc(sizeof(*res), GFP_KERNEL); |
| int ret; |
| |
| if (unlikely(res == NULL)) |
| return NULL; |
| |
| ret = vmw_context_init(dev_priv, res, NULL); |
| |
| return (ret == 0) ? res : NULL; |
| } |
| |
| /** |
| * User-space context management: |
| */ |
| |
| static struct vmw_resource * |
| vmw_user_context_base_to_res(struct ttm_base_object *base) |
| { |
| return &(container_of(base, struct vmw_user_context, base)->res); |
| } |
| |
| static void vmw_user_context_free(struct vmw_resource *res) |
| { |
| struct vmw_user_context *ctx = |
| container_of(res, struct vmw_user_context, res); |
| struct vmw_private *dev_priv = res->dev_priv; |
| |
| ttm_base_object_kfree(ctx, base); |
| ttm_mem_global_free(vmw_mem_glob(dev_priv), |
| vmw_user_context_size); |
| } |
| |
| /** |
| * This function is called when user space has no more references on the |
| * base object. It releases the base-object's reference on the resource object. |
| */ |
| |
| static void vmw_user_context_base_release(struct ttm_base_object **p_base) |
| { |
| struct ttm_base_object *base = *p_base; |
| struct vmw_user_context *ctx = |
| container_of(base, struct vmw_user_context, base); |
| struct vmw_resource *res = &ctx->res; |
| |
| *p_base = NULL; |
| vmw_resource_unreference(&res); |
| } |
| |
| int vmw_context_destroy_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data; |
| struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
| |
| return ttm_ref_object_base_unref(tfile, arg->cid, TTM_REF_USAGE); |
| } |
| |
| int vmw_context_define_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| struct vmw_private *dev_priv = vmw_priv(dev); |
| struct vmw_user_context *ctx; |
| struct vmw_resource *res; |
| struct vmw_resource *tmp; |
| struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data; |
| struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
| struct vmw_master *vmaster = vmw_master(file_priv->master); |
| int ret; |
| |
| |
| /* |
| * Approximate idr memory usage with 128 bytes. It will be limited |
| * by maximum number_of contexts anyway. |
| */ |
| |
| if (unlikely(vmw_user_context_size == 0)) |
| vmw_user_context_size = ttm_round_pot(sizeof(*ctx)) + 128; |
| |
| ret = ttm_read_lock(&vmaster->lock, true); |
| if (unlikely(ret != 0)) |
| return ret; |
| |
| ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv), |
| vmw_user_context_size, |
| false, true); |
| if (unlikely(ret != 0)) { |
| if (ret != -ERESTARTSYS) |
| DRM_ERROR("Out of graphics memory for context" |
| " creation.\n"); |
| goto out_unlock; |
| } |
| |
| ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
| if (unlikely(ctx == NULL)) { |
| ttm_mem_global_free(vmw_mem_glob(dev_priv), |
| vmw_user_context_size); |
| ret = -ENOMEM; |
| goto out_unlock; |
| } |
| |
| res = &ctx->res; |
| ctx->base.shareable = false; |
| ctx->base.tfile = NULL; |
| |
| /* |
| * From here on, the destructor takes over resource freeing. |
| */ |
| |
| ret = vmw_context_init(dev_priv, res, vmw_user_context_free); |
| if (unlikely(ret != 0)) |
| goto out_unlock; |
| |
| tmp = vmw_resource_reference(&ctx->res); |
| ret = ttm_base_object_init(tfile, &ctx->base, false, VMW_RES_CONTEXT, |
| &vmw_user_context_base_release, NULL); |
| |
| if (unlikely(ret != 0)) { |
| vmw_resource_unreference(&tmp); |
| goto out_err; |
| } |
| |
| arg->cid = ctx->base.hash.key; |
| out_err: |
| vmw_resource_unreference(&res); |
| out_unlock: |
| ttm_read_unlock(&vmaster->lock); |
| return ret; |
| |
| } |
| |
| /** |
| * struct vmw_bpp - Bits per pixel info for surface storage size computation. |
| * |
| * @bpp: Bits per pixel. |
| * @s_bpp: Stride bits per pixel. See definition below. |
| * |
| */ |
| struct vmw_bpp { |
| uint8_t bpp; |
| uint8_t s_bpp; |
| }; |
| |
| /* |
| * Size table for the supported SVGA3D surface formats. It consists of |
| * two values. The bpp value and the s_bpp value which is short for |
| * "stride bits per pixel" The values are given in such a way that the |
| * minimum stride for the image is calculated using |
| * |
| * min_stride = w*s_bpp |
| * |
| * and the total memory requirement for the image is |
| * |
| * h*min_stride*bpp/s_bpp |
| * |
| */ |
| static const struct vmw_bpp vmw_sf_bpp[] = { |
| [SVGA3D_FORMAT_INVALID] = {0, 0}, |
| [SVGA3D_X8R8G8B8] = {32, 32}, |
| [SVGA3D_A8R8G8B8] = {32, 32}, |
| [SVGA3D_R5G6B5] = {16, 16}, |
| [SVGA3D_X1R5G5B5] = {16, 16}, |
| [SVGA3D_A1R5G5B5] = {16, 16}, |
| [SVGA3D_A4R4G4B4] = {16, 16}, |
| [SVGA3D_Z_D32] = {32, 32}, |
| [SVGA3D_Z_D16] = {16, 16}, |
| [SVGA3D_Z_D24S8] = {32, 32}, |
| [SVGA3D_Z_D15S1] = {16, 16}, |
| [SVGA3D_LUMINANCE8] = {8, 8}, |
| [SVGA3D_LUMINANCE4_ALPHA4] = {8, 8}, |
| [SVGA3D_LUMINANCE16] = {16, 16}, |
| [SVGA3D_LUMINANCE8_ALPHA8] = {16, 16}, |
| [SVGA3D_DXT1] = {4, 16}, |
| [SVGA3D_DXT2] = {8, 32}, |
| [SVGA3D_DXT3] = {8, 32}, |
| [SVGA3D_DXT4] = {8, 32}, |
| [SVGA3D_DXT5] = {8, 32}, |
| [SVGA3D_BUMPU8V8] = {16, 16}, |
| [SVGA3D_BUMPL6V5U5] = {16, 16}, |
| [SVGA3D_BUMPX8L8V8U8] = {32, 32}, |
| [SVGA3D_ARGB_S10E5] = {16, 16}, |
| [SVGA3D_ARGB_S23E8] = {32, 32}, |
| [SVGA3D_A2R10G10B10] = {32, 32}, |
| [SVGA3D_V8U8] = {16, 16}, |
| [SVGA3D_Q8W8V8U8] = {32, 32}, |
| [SVGA3D_CxV8U8] = {16, 16}, |
| [SVGA3D_X8L8V8U8] = {32, 32}, |
| [SVGA3D_A2W10V10U10] = {32, 32}, |
| [SVGA3D_ALPHA8] = {8, 8}, |
| [SVGA3D_R_S10E5] = {16, 16}, |
| [SVGA3D_R_S23E8] = {32, 32}, |
| [SVGA3D_RG_S10E5] = {16, 16}, |
| [SVGA3D_RG_S23E8] = {32, 32}, |
| [SVGA3D_BUFFER] = {8, 8}, |
| [SVGA3D_Z_D24X8] = {32, 32}, |
| [SVGA3D_V16U16] = {32, 32}, |
| [SVGA3D_G16R16] = {32, 32}, |
| [SVGA3D_A16B16G16R16] = {64, 64}, |
| [SVGA3D_UYVY] = {12, 12}, |
| [SVGA3D_YUY2] = {12, 12}, |
| [SVGA3D_NV12] = {12, 8}, |
| [SVGA3D_AYUV] = {32, 32}, |
| [SVGA3D_BC4_UNORM] = {4, 16}, |
| [SVGA3D_BC5_UNORM] = {8, 32}, |
| [SVGA3D_Z_DF16] = {16, 16}, |
| [SVGA3D_Z_DF24] = {24, 24}, |
| [SVGA3D_Z_D24S8_INT] = {32, 32} |
| }; |
| |
| |
| /** |
| * struct vmw_surface_dma - SVGA3D DMA command |
| */ |
| struct vmw_surface_dma { |
| SVGA3dCmdHeader header; |
| SVGA3dCmdSurfaceDMA body; |
| SVGA3dCopyBox cb; |
| SVGA3dCmdSurfaceDMASuffix suffix; |
| }; |
| |
| /** |
| * struct vmw_surface_define - SVGA3D Surface Define command |
| */ |
| struct vmw_surface_define { |
| SVGA3dCmdHeader header; |
| SVGA3dCmdDefineSurface body; |
| }; |
| |
| /** |
| * struct vmw_surface_destroy - SVGA3D Surface Destroy command |
| */ |
| struct vmw_surface_destroy { |
| SVGA3dCmdHeader header; |
| SVGA3dCmdDestroySurface body; |
| }; |
| |
| |
| /** |
| * vmw_surface_dma_size - Compute fifo size for a dma command. |
| * |
| * @srf: Pointer to a struct vmw_surface |
| * |
| * Computes the required size for a surface dma command for backup or |
| * restoration of the surface represented by @srf. |
| */ |
| static inline uint32_t vmw_surface_dma_size(const struct vmw_surface *srf) |
| { |
| return srf->num_sizes * sizeof(struct vmw_surface_dma); |
| } |
| |
| |
| /** |
| * vmw_surface_define_size - Compute fifo size for a surface define command. |
| * |
| * @srf: Pointer to a struct vmw_surface |
| * |
| * Computes the required size for a surface define command for the definition |
| * of the surface represented by @srf. |
| */ |
| static inline uint32_t vmw_surface_define_size(const struct vmw_surface *srf) |
| { |
| return sizeof(struct vmw_surface_define) + srf->num_sizes * |
| sizeof(SVGA3dSize); |
| } |
| |
| |
| /** |
| * vmw_surface_destroy_size - Compute fifo size for a surface destroy command. |
| * |
| * Computes the required size for a surface destroy command for the destruction |
| * of a hw surface. |
| */ |
| static inline uint32_t vmw_surface_destroy_size(void) |
| { |
| return sizeof(struct vmw_surface_destroy); |
| } |
| |
| /** |
| * vmw_surface_destroy_encode - Encode a surface_destroy command. |
| * |
| * @id: The surface id |
| * @cmd_space: Pointer to memory area in which the commands should be encoded. |
| */ |
| static void vmw_surface_destroy_encode(uint32_t id, |
| void *cmd_space) |
| { |
| struct vmw_surface_destroy *cmd = (struct vmw_surface_destroy *) |
| cmd_space; |
| |
| cmd->header.id = SVGA_3D_CMD_SURFACE_DESTROY; |
| cmd->header.size = sizeof(cmd->body); |
| cmd->body.sid = id; |
| } |
| |
| /** |
| * vmw_surface_define_encode - Encode a surface_define command. |
| * |
| * @srf: Pointer to a struct vmw_surface object. |
| * @cmd_space: Pointer to memory area in which the commands should be encoded. |
| */ |
| static void vmw_surface_define_encode(const struct vmw_surface *srf, |
| void *cmd_space) |
| { |
| struct vmw_surface_define *cmd = (struct vmw_surface_define *) |
| cmd_space; |
| struct drm_vmw_size *src_size; |
| SVGA3dSize *cmd_size; |
| uint32_t cmd_len; |
| int i; |
| |
| cmd_len = sizeof(cmd->body) + srf->num_sizes * sizeof(SVGA3dSize); |
| |
| cmd->header.id = SVGA_3D_CMD_SURFACE_DEFINE; |
| cmd->header.size = cmd_len; |
| cmd->body.sid = srf->res.id; |
| cmd->body.surfaceFlags = srf->flags; |
| cmd->body.format = cpu_to_le32(srf->format); |
| for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) |
| cmd->body.face[i].numMipLevels = srf->mip_levels[i]; |
| |
| cmd += 1; |
| cmd_size = (SVGA3dSize *) cmd; |
| src_size = srf->sizes; |
| |
| for (i = 0; i < srf->num_sizes; ++i, cmd_size++, src_size++) { |
| cmd_size->width = src_size->width; |
| cmd_size->height = src_size->height; |
| cmd_size->depth = src_size->depth; |
| } |
| } |
| |
| /** |
| * vmw_surface_dma_encode - Encode a surface_dma command. |
| * |
| * @srf: Pointer to a struct vmw_surface object. |
| * @cmd_space: Pointer to memory area in which the commands should be encoded. |
| * @ptr: Pointer to an SVGAGuestPtr indicating where the surface contents |
| * should be placed or read from. |
| * @to_surface: Boolean whether to DMA to the surface or from the surface. |
| */ |
| static void vmw_surface_dma_encode(struct vmw_surface *srf, |
| void *cmd_space, |
| const SVGAGuestPtr *ptr, |
| bool to_surface) |
| { |
| uint32_t i; |
| uint32_t bpp = vmw_sf_bpp[srf->format].bpp; |
| uint32_t stride_bpp = vmw_sf_bpp[srf->format].s_bpp; |
| struct vmw_surface_dma *cmd = (struct vmw_surface_dma *)cmd_space; |
| |
| for (i = 0; i < srf->num_sizes; ++i) { |
| SVGA3dCmdHeader *header = &cmd->header; |
| SVGA3dCmdSurfaceDMA *body = &cmd->body; |
| SVGA3dCopyBox *cb = &cmd->cb; |
| SVGA3dCmdSurfaceDMASuffix *suffix = &cmd->suffix; |
| const struct vmw_surface_offset *cur_offset = &srf->offsets[i]; |
| const struct drm_vmw_size *cur_size = &srf->sizes[i]; |
| |
| header->id = SVGA_3D_CMD_SURFACE_DMA; |
| header->size = sizeof(*body) + sizeof(*cb) + sizeof(*suffix); |
| |
| body->guest.ptr = *ptr; |
| body->guest.ptr.offset += cur_offset->bo_offset; |
| body->guest.pitch = (cur_size->width * stride_bpp + 7) >> 3; |
| 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 = body->guest.pitch*cur_size->height* |
| cur_size->depth*bpp / stride_bpp; |
| suffix->flags.discard = 0; |
| suffix->flags.unsynchronized = 0; |
| suffix->flags.reserved = 0; |
| ++cmd; |
| } |
| }; |
| |
| |
| /** |
| * vmw_hw_surface_destroy - destroy a Device surface |
| * |
| * @res: Pointer to a struct vmw_resource embedded in a struct |
| * vmw_surface. |
| * |
| * Destroys a the device surface associated with a struct vmw_surface if |
| * any, and adjusts accounting and resource count accordingly. |
| */ |
| static void vmw_hw_surface_destroy(struct vmw_resource *res) |
| { |
| |
| struct vmw_private *dev_priv = res->dev_priv; |
| struct vmw_surface *srf; |
| void *cmd; |
| |
| if (res->id != -1) { |
| |
| cmd = vmw_fifo_reserve(dev_priv, vmw_surface_destroy_size()); |
| if (unlikely(cmd == NULL)) { |
| DRM_ERROR("Failed reserving FIFO space for surface " |
| "destruction.\n"); |
| return; |
| } |
| |
| vmw_surface_destroy_encode(res->id, cmd); |
| vmw_fifo_commit(dev_priv, vmw_surface_destroy_size()); |
| |
| /* |
| * used_memory_size_atomic, or separate lock |
| * to avoid taking dev_priv::cmdbuf_mutex in |
| * the destroy path. |
| */ |
| |
| mutex_lock(&dev_priv->cmdbuf_mutex); |
| srf = vmw_res_to_srf(res); |
| dev_priv->used_memory_size -= res->backup_size; |
| mutex_unlock(&dev_priv->cmdbuf_mutex); |
| } |
| vmw_3d_resource_dec(dev_priv, false); |
| } |
| |
| /** |
| * vmw_legacy_srf_create - Create a device surface as part of the |
| * resource validation process. |
| * |
| * @res: Pointer to a struct vmw_surface. |
| * |
| * If the surface doesn't have a hw id. |
| * |
| * Returns -EBUSY if there wasn't sufficient device resources to |
| * complete the validation. Retry after freeing up resources. |
| * |
| * May return other errors if the kernel is out of guest resources. |
| */ |
| static int vmw_legacy_srf_create(struct vmw_resource *res) |
| { |
| struct vmw_private *dev_priv = res->dev_priv; |
| struct vmw_surface *srf; |
| uint32_t submit_size; |
| uint8_t *cmd; |
| int ret; |
| |
| if (likely(res->id != -1)) |
| return 0; |
| |
| srf = vmw_res_to_srf(res); |
| if (unlikely(dev_priv->used_memory_size + res->backup_size >= |
| dev_priv->memory_size)) |
| return -EBUSY; |
| |
| /* |
| * Alloc id for the resource. |
| */ |
| |
| ret = vmw_resource_alloc_id(res); |
| if (unlikely(ret != 0)) { |
| DRM_ERROR("Failed to allocate a surface id.\n"); |
| goto out_no_id; |
| } |
| |
| if (unlikely(res->id >= SVGA3D_MAX_SURFACE_IDS)) { |
| ret = -EBUSY; |
| goto out_no_fifo; |
| } |
| |
| /* |
| * Encode surface define- commands. |
| */ |
| |
| submit_size = vmw_surface_define_size(srf); |
| cmd = vmw_fifo_reserve(dev_priv, submit_size); |
| if (unlikely(cmd == NULL)) { |
| DRM_ERROR("Failed reserving FIFO space for surface " |
| "creation.\n"); |
| ret = -ENOMEM; |
| goto out_no_fifo; |
| } |
| |
| vmw_surface_define_encode(srf, cmd); |
| vmw_fifo_commit(dev_priv, submit_size); |
| /* |
| * Surface memory usage accounting. |
| */ |
| |
| dev_priv->used_memory_size += res->backup_size; |
| return 0; |
| |
| out_no_fifo: |
| vmw_resource_release_id(res); |
| out_no_id: |
| return ret; |
| } |
| |
| /** |
| * vmw_legacy_srf_dma - Copy backup data to or from a legacy surface. |
| * |
| * @res: Pointer to a struct vmw_res embedded in a struct |
| * vmw_surface. |
| * @val_buf: Pointer to a struct ttm_validate_buffer containing |
| * information about the backup buffer. |
| * @bind: Boolean wether to DMA to the surface. |
| * |
| * Transfer backup data to or from a legacy surface as part of the |
| * validation process. |
| * May return other errors if the kernel is out of guest resources. |
| * The backup buffer will be fenced or idle upon successful completion, |
| * and if the surface needs persistent backup storage, the backup buffer |
| * will also be returned reserved iff @bind is true. |
| */ |
| static int vmw_legacy_srf_dma(struct vmw_resource *res, |
| struct ttm_validate_buffer *val_buf, |
| bool bind) |
| { |
| SVGAGuestPtr ptr; |
| struct vmw_fence_obj *fence; |
| uint32_t submit_size; |
| struct vmw_surface *srf = vmw_res_to_srf(res); |
| uint8_t *cmd; |
| struct vmw_private *dev_priv = res->dev_priv; |
| |
| BUG_ON(val_buf->bo == NULL); |
| |
| submit_size = vmw_surface_dma_size(srf); |
| cmd = vmw_fifo_reserve(dev_priv, submit_size); |
| if (unlikely(cmd == NULL)) { |
| DRM_ERROR("Failed reserving FIFO space for surface " |
| "DMA.\n"); |
| return -ENOMEM; |
| } |
| vmw_bo_get_guest_ptr(val_buf->bo, &ptr); |
| vmw_surface_dma_encode(srf, cmd, &ptr, bind); |
| |
| vmw_fifo_commit(dev_priv, submit_size); |
| |
| /* |
| * Create a fence object and fence the backup buffer. |
| */ |
| |
| (void) vmw_execbuf_fence_commands(NULL, dev_priv, |
| &fence, NULL); |
| |
| vmw_fence_single_bo(val_buf->bo, fence); |
| |
| if (likely(fence != NULL)) |
| vmw_fence_obj_unreference(&fence); |
| |
| return 0; |
| } |
| |
| /** |
| * vmw_legacy_srf_bind - Perform a legacy surface bind as part of the |
| * surface validation process. |
| * |
| * @res: Pointer to a struct vmw_res embedded in a struct |
| * vmw_surface. |
| * @val_buf: Pointer to a struct ttm_validate_buffer containing |
| * information about the backup buffer. |
| * |
| * This function will copy backup data to the surface if the |
| * backup buffer is dirty. |
| */ |
| static int vmw_legacy_srf_bind(struct vmw_resource *res, |
| struct ttm_validate_buffer *val_buf) |
| { |
| if (!res->backup_dirty) |
| return 0; |
| |
| return vmw_legacy_srf_dma(res, val_buf, true); |
| } |
| |
| |
| /** |
| * vmw_legacy_srf_unbind - Perform a legacy surface unbind as part of the |
| * surface eviction process. |
| * |
| * @res: Pointer to a struct vmw_res embedded in a struct |
| * vmw_surface. |
| * @val_buf: Pointer to a struct ttm_validate_buffer containing |
| * information about the backup buffer. |
| * |
| * This function will copy backup data from the surface. |
| */ |
| static int vmw_legacy_srf_unbind(struct vmw_resource *res, |
| bool readback, |
| struct ttm_validate_buffer *val_buf) |
| { |
| if (unlikely(readback)) |
| return vmw_legacy_srf_dma(res, val_buf, false); |
| return 0; |
| } |
| |
| /** |
| * vmw_legacy_srf_destroy - Destroy a device surface as part of a |
| * resource eviction process. |
| * |
| * @res: Pointer to a struct vmw_res embedded in a struct |
| * vmw_surface. |
| */ |
| static int vmw_legacy_srf_destroy(struct vmw_resource *res) |
| { |
| struct vmw_private *dev_priv = res->dev_priv; |
| uint32_t submit_size; |
| uint8_t *cmd; |
| |
| BUG_ON(res->id == -1); |
| |
| /* |
| * Encode the dma- and surface destroy commands. |
| */ |
| |
| submit_size = vmw_surface_destroy_size(); |
| cmd = vmw_fifo_reserve(dev_priv, submit_size); |
| if (unlikely(cmd == NULL)) { |
| DRM_ERROR("Failed reserving FIFO space for surface " |
| "eviction.\n"); |
| return -ENOMEM; |
| } |
| |
| vmw_surface_destroy_encode(res->id, cmd); |
| vmw_fifo_commit(dev_priv, submit_size); |
| |
| /* |
| * Surface memory usage accounting. |
| */ |
| |
| dev_priv->used_memory_size -= res->backup_size; |
| |
| /* |
| * Release the surface ID. |
| */ |
| |
| vmw_resource_release_id(res); |
| |
| return 0; |
| } |
| |
| |
| /** |
| * vmw_surface_init - initialize a struct vmw_surface |
| * |
| * @dev_priv: Pointer to a device private struct. |
| * @srf: Pointer to the struct vmw_surface to initialize. |
| * @res_free: Pointer to a resource destructor used to free |
| * the object. |
| */ |
| static int vmw_surface_init(struct vmw_private *dev_priv, |
| struct vmw_surface *srf, |
| void (*res_free) (struct vmw_resource *res)) |
| { |
| int ret; |
| struct vmw_resource *res = &srf->res; |
| |
| BUG_ON(res_free == NULL); |
| (void) vmw_3d_resource_inc(dev_priv, false); |
| ret = vmw_resource_init(dev_priv, res, true, res_free, |
| &vmw_legacy_surface_func); |
| |
| if (unlikely(ret != 0)) { |
| vmw_3d_resource_dec(dev_priv, false); |
| res_free(res); |
| return ret; |
| } |
| |
| /* |
| * The surface won't be visible to hardware until a |
| * surface validate. |
| */ |
| |
| vmw_resource_activate(res, vmw_hw_surface_destroy); |
| return ret; |
| } |
| |
| /** |
| * vmw_user_surface_base_to_res - TTM base object to resource converter for |
| * user visible surfaces |
| * |
| * @base: Pointer to a TTM base object |
| * |
| * Returns the struct vmw_resource embedded in a struct vmw_surface |
| * for the user-visible object identified by the TTM base object @base. |
| */ |
| static struct vmw_resource * |
| vmw_user_surface_base_to_res(struct ttm_base_object *base) |
| { |
| return &(container_of(base, struct vmw_user_surface, base)->srf.res); |
| } |
| |
| /** |
| * vmw_user_surface_free - User visible surface resource destructor |
| * |
| * @res: A struct vmw_resource embedded in a struct vmw_surface. |
| */ |
| static void vmw_user_surface_free(struct vmw_resource *res) |
| { |
| struct vmw_surface *srf = vmw_res_to_srf(res); |
| struct vmw_user_surface *user_srf = |
| container_of(srf, struct vmw_user_surface, srf); |
| struct vmw_private *dev_priv = srf->res.dev_priv; |
| uint32_t size = user_srf->size; |
| |
| kfree(srf->offsets); |
| kfree(srf->sizes); |
| kfree(srf->snooper.image); |
| ttm_base_object_kfree(user_srf, base); |
| ttm_mem_global_free(vmw_mem_glob(dev_priv), size); |
| } |
| |
| /** |
| * vmw_user_surface_free - User visible surface TTM base object destructor |
| * |
| * @p_base: Pointer to a pointer to a TTM base object |
| * embedded in a struct vmw_user_surface. |
| * |
| * Drops the base object's reference on its resource, and the |
| * pointer pointed to by *p_base is set to NULL. |
| */ |
| static void vmw_user_surface_base_release(struct ttm_base_object **p_base) |
| { |
| struct ttm_base_object *base = *p_base; |
| struct vmw_user_surface *user_srf = |
| container_of(base, struct vmw_user_surface, base); |
| struct vmw_resource *res = &user_srf->srf.res; |
| |
| *p_base = NULL; |
| vmw_resource_unreference(&res); |
| } |
| |
| /** |
| * vmw_user_surface_destroy_ioctl - Ioctl function implementing |
| * the user surface destroy functionality. |
| * |
| * @dev: Pointer to a struct drm_device. |
| * @data: Pointer to data copied from / to user-space. |
| * @file_priv: Pointer to a drm file private structure. |
| */ |
| int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| struct drm_vmw_surface_arg *arg = (struct drm_vmw_surface_arg *)data; |
| struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
| |
| return ttm_ref_object_base_unref(tfile, arg->sid, TTM_REF_USAGE); |
| } |
| |
| /** |
| * vmw_user_surface_define_ioctl - Ioctl function implementing |
| * the user surface define functionality. |
| * |
| * @dev: Pointer to a struct drm_device. |
| * @data: Pointer to data copied from / to user-space. |
| * @file_priv: Pointer to a drm file private structure. |
| */ |
| int vmw_surface_define_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| struct vmw_private *dev_priv = vmw_priv(dev); |
| struct vmw_user_surface *user_srf; |
| struct vmw_surface *srf; |
| struct vmw_resource *res; |
| struct vmw_resource *tmp; |
| union drm_vmw_surface_create_arg *arg = |
| (union drm_vmw_surface_create_arg *)data; |
| struct drm_vmw_surface_create_req *req = &arg->req; |
| struct drm_vmw_surface_arg *rep = &arg->rep; |
| struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
| struct drm_vmw_size __user *user_sizes; |
| int ret; |
| int i, j; |
| uint32_t cur_bo_offset; |
| struct drm_vmw_size *cur_size; |
| struct vmw_surface_offset *cur_offset; |
| uint32_t stride_bpp; |
| uint32_t bpp; |
| uint32_t num_sizes; |
| uint32_t size; |
| struct vmw_master *vmaster = vmw_master(file_priv->master); |
| |
| if (unlikely(vmw_user_surface_size == 0)) |
| vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) + |
| 128; |
| |
| num_sizes = 0; |
| for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) |
| num_sizes += req->mip_levels[i]; |
| |
| if (num_sizes > DRM_VMW_MAX_SURFACE_FACES * |
| DRM_VMW_MAX_MIP_LEVELS) |
| return -EINVAL; |
| |
| size = vmw_user_surface_size + 128 + |
| ttm_round_pot(num_sizes * sizeof(struct drm_vmw_size)) + |
| ttm_round_pot(num_sizes * sizeof(struct vmw_surface_offset)); |
| |
| |
| ret = ttm_read_lock(&vmaster->lock, true); |
| if (unlikely(ret != 0)) |
| return ret; |
| |
| ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv), |
| size, false, true); |
| if (unlikely(ret != 0)) { |
| if (ret != -ERESTARTSYS) |
| DRM_ERROR("Out of graphics memory for surface" |
| " creation.\n"); |
| goto out_unlock; |
| } |
| |
| user_srf = kzalloc(sizeof(*user_srf), GFP_KERNEL); |
| if (unlikely(user_srf == NULL)) { |
| ret = -ENOMEM; |
| goto out_no_user_srf; |
| } |
| |
| srf = &user_srf->srf; |
| res = &srf->res; |
| |
| srf->flags = req->flags; |
| srf->format = req->format; |
| srf->scanout = req->scanout; |
| |
| memcpy(srf->mip_levels, req->mip_levels, sizeof(srf->mip_levels)); |
| srf->num_sizes = num_sizes; |
| user_srf->size = size; |
| |
| srf->sizes = kmalloc(srf->num_sizes * sizeof(*srf->sizes), GFP_KERNEL); |
| if (unlikely(srf->sizes == NULL)) { |
| ret = -ENOMEM; |
| goto out_no_sizes; |
| } |
| srf->offsets = kmalloc(srf->num_sizes * sizeof(*srf->offsets), |
| GFP_KERNEL); |
| if (unlikely(srf->sizes == NULL)) { |
| ret = -ENOMEM; |
| goto out_no_offsets; |
| } |
| |
| user_sizes = (struct drm_vmw_size __user *)(unsigned long) |
| req->size_addr; |
| |
| ret = copy_from_user(srf->sizes, user_sizes, |
| srf->num_sizes * sizeof(*srf->sizes)); |
| if (unlikely(ret != 0)) { |
| ret = -EFAULT; |
| goto out_no_copy; |
| } |
| |
| srf->base_size = *srf->sizes; |
| srf->autogen_filter = SVGA3D_TEX_FILTER_NONE; |
| srf->multisample_count = 1; |
| |
| cur_bo_offset = 0; |
| cur_offset = srf->offsets; |
| cur_size = srf->sizes; |
| |
| bpp = vmw_sf_bpp[srf->format].bpp; |
| stride_bpp = vmw_sf_bpp[srf->format].s_bpp; |
| |
| for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) { |
| for (j = 0; j < srf->mip_levels[i]; ++j) { |
| uint32_t stride = |
| (cur_size->width * stride_bpp + 7) >> 3; |
| |
| cur_offset->face = i; |
| cur_offset->mip = j; |
| cur_offset->bo_offset = cur_bo_offset; |
| cur_bo_offset += stride * cur_size->height * |
| cur_size->depth * bpp / stride_bpp; |
| ++cur_offset; |
| ++cur_size; |
| } |
| } |
| res->backup_size = cur_bo_offset; |
| |
| if (srf->scanout && |
| srf->num_sizes == 1 && |
| srf->sizes[0].width == 64 && |
| srf->sizes[0].height == 64 && |
| srf->format == SVGA3D_A8R8G8B8) { |
| |
| /* allocate image area and clear it */ |
| 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; |
| } |
| srf->snooper.crtc = NULL; |
| |
| user_srf->base.shareable = false; |
| user_srf->base.tfile = NULL; |
| |
| /** |
| * From this point, the generic resource management functions |
| * destroy the object on failure. |
| */ |
| |
| ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free); |
| if (unlikely(ret != 0)) |
| goto out_unlock; |
| |
| tmp = vmw_resource_reference(&srf->res); |
| ret = ttm_base_object_init(tfile, &user_srf->base, |
| req->shareable, VMW_RES_SURFACE, |
| &vmw_user_surface_base_release, NULL); |
| |
| if (unlikely(ret != 0)) { |
| vmw_resource_unreference(&tmp); |
| vmw_resource_unreference(&res); |
| goto out_unlock; |
| } |
| |
| rep->sid = user_srf->base.hash.key; |
| vmw_resource_unreference(&res); |
| |
| ttm_read_unlock(&vmaster->lock); |
| return 0; |
| out_no_copy: |
| kfree(srf->offsets); |
| out_no_offsets: |
| kfree(srf->sizes); |
| out_no_sizes: |
| kfree(user_srf); |
| out_no_user_srf: |
| ttm_mem_global_free(vmw_mem_glob(dev_priv), size); |
| out_unlock: |
| ttm_read_unlock(&vmaster->lock); |
| return ret; |
| } |
| |
| /** |
| * vmw_user_surface_define_ioctl - Ioctl function implementing |
| * the user surface reference functionality. |
| * |
| * @dev: Pointer to a struct drm_device. |
| * @data: Pointer to data copied from / to user-space. |
| * @file_priv: Pointer to a drm file private structure. |
| */ |
| int vmw_surface_reference_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| union drm_vmw_surface_reference_arg *arg = |
| (union drm_vmw_surface_reference_arg *)data; |
| struct drm_vmw_surface_arg *req = &arg->req; |
| struct drm_vmw_surface_create_req *rep = &arg->rep; |
| struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
| struct vmw_surface *srf; |
| struct vmw_user_surface *user_srf; |
| struct drm_vmw_size __user *user_sizes; |
| struct ttm_base_object *base; |
| int ret = -EINVAL; |
| |
| base = ttm_base_object_lookup(tfile, req->sid); |
| if (unlikely(base == NULL)) { |
| DRM_ERROR("Could not find surface to reference.\n"); |
| return -EINVAL; |
| } |
| |
| if (unlikely(base->object_type != VMW_RES_SURFACE)) |
| goto out_bad_resource; |
| |
| user_srf = container_of(base, struct vmw_user_surface, base); |
| srf = &user_srf->srf; |
| |
| ret = ttm_ref_object_add(tfile, &user_srf->base, TTM_REF_USAGE, NULL); |
| if (unlikely(ret != 0)) { |
| DRM_ERROR("Could not add a reference to a surface.\n"); |
| goto out_no_reference; |
| } |
| |
| rep->flags = srf->flags; |
| rep->format = srf->format; |
| memcpy(rep->mip_levels, srf->mip_levels, sizeof(srf->mip_levels)); |
| user_sizes = (struct drm_vmw_size __user *)(unsigned long) |
| rep->size_addr; |
| |
| if (user_sizes) |
| ret = copy_to_user(user_sizes, srf->sizes, |
| srf->num_sizes * sizeof(*srf->sizes)); |
| if (unlikely(ret != 0)) { |
| DRM_ERROR("copy_to_user failed %p %u\n", |
| user_sizes, srf->num_sizes); |
| ret = -EFAULT; |
| } |
| out_bad_resource: |
| out_no_reference: |
| ttm_base_object_unref(&base); |
| |
| return ret; |
| } |
| |
| /** |
| * vmw_user_resource_lookup_handle - lookup a struct resource from a |
| * TTM user-space handle and perform basic type checks |
| * |
| * @dev_priv: Pointer to a device private struct |
| * @tfile: Pointer to a struct ttm_object_file identifying the caller |
| * @handle: The TTM user-space handle |
| * @converter: Pointer to an object describing the resource type |
| * @p_res: On successful return the location pointed to will contain |
| * a pointer to a refcounted struct vmw_resource. |
| * |
| * If the handle can't be found or is associated with an incorrect resource |
| * type, -EINVAL will be returned. |
| */ |
| int vmw_user_resource_lookup_handle(struct vmw_private *dev_priv, |
| struct ttm_object_file *tfile, |
| uint32_t handle, |
| const struct vmw_user_resource_conv |
| *converter, |
| struct vmw_resource **p_res) |
| { |
| struct ttm_base_object *base; |
| struct vmw_resource *res; |
| int ret = -EINVAL; |
| |
| base = ttm_base_object_lookup(tfile, handle); |
| if (unlikely(base == NULL)) |
| return -EINVAL; |
| |
| if (unlikely(base->object_type != converter->object_type)) |
| goto out_bad_resource; |
| |
| res = converter->base_obj_to_res(base); |
| |
| read_lock(&dev_priv->resource_lock); |
| if (!res->avail || res->res_free != converter->res_free) { |
| read_unlock(&dev_priv->resource_lock); |
| goto out_bad_resource; |
| } |
| |
| kref_get(&res->kref); |
| read_unlock(&dev_priv->resource_lock); |
| |
| *p_res = res; |
| ret = 0; |
| |
| out_bad_resource: |
| ttm_base_object_unref(&base); |
| |
| return ret; |
| } |
| |
| /** |
| * Helper function that looks either a surface or dmabuf. |
| * |
| * The pointer this pointed at by out_surf and out_buf needs to be null. |
| */ |
| int vmw_user_lookup_handle(struct vmw_private *dev_priv, |
| struct ttm_object_file *tfile, |
| uint32_t handle, |
| struct vmw_surface **out_surf, |
| struct vmw_dma_buffer **out_buf) |
| { |
| struct vmw_resource *res; |
| int ret; |
| |
| BUG_ON(*out_surf || *out_buf); |
| |
| ret = vmw_user_resource_lookup_handle(dev_priv, tfile, handle, |
| user_surface_converter, |
| &res); |
| if (!ret) { |
| *out_surf = vmw_res_to_srf(res); |
| return 0; |
| } |
| |
| *out_surf = NULL; |
| ret = vmw_user_dmabuf_lookup(tfile, handle, out_buf); |
| return ret; |
| } |
| |
| /** |
| * Buffer management. |
| */ |
| void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo) |
| { |
| struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo); |
| |
| kfree(vmw_bo); |
| } |
| |
| int vmw_dmabuf_init(struct vmw_private *dev_priv, |
| struct vmw_dma_buffer *vmw_bo, |
| size_t size, struct ttm_placement *placement, |
| bool interruptible, |
| void (*bo_free) (struct ttm_buffer_object *bo)) |
| { |
| struct ttm_bo_device *bdev = &dev_priv->bdev; |
| size_t acc_size; |
| int ret; |
| |
| BUG_ON(!bo_free); |
| |
| acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct vmw_dma_buffer)); |
| memset(vmw_bo, 0, sizeof(*vmw_bo)); |
| |
| INIT_LIST_HEAD(&vmw_bo->res_list); |
| |
| ret = ttm_bo_init(bdev, &vmw_bo->base, size, |
| ttm_bo_type_device, placement, |
| 0, interruptible, |
| NULL, acc_size, NULL, bo_free); |
| return ret; |
| } |
| |
| static void vmw_user_dmabuf_destroy(struct ttm_buffer_object *bo) |
| { |
| struct vmw_user_dma_buffer *vmw_user_bo = vmw_user_dma_buffer(bo); |
| |
| ttm_base_object_kfree(vmw_user_bo, base); |
| } |
| |
| static void vmw_user_dmabuf_release(struct ttm_base_object **p_base) |
| { |
| struct vmw_user_dma_buffer *vmw_user_bo; |
| struct ttm_base_object *base = *p_base; |
| struct ttm_buffer_object *bo; |
| |
| *p_base = NULL; |
| |
| if (unlikely(base == NULL)) |
| return; |
| |
| vmw_user_bo = container_of(base, struct vmw_user_dma_buffer, base); |
| bo = &vmw_user_bo->dma.base; |
| ttm_bo_unref(&bo); |
| } |
| |
| /** |
| * vmw_user_dmabuf_alloc - Allocate a user dma buffer |
| * |
| * @dev_priv: Pointer to a struct device private. |
| * @tfile: Pointer to a struct ttm_object_file on which to register the user |
| * object. |
| * @size: Size of the dma buffer. |
| * @shareable: Boolean whether the buffer is shareable with other open files. |
| * @handle: Pointer to where the handle value should be assigned. |
| * @p_dma_buf: Pointer to where the refcounted struct vmw_dma_buffer pointer |
| * should be assigned. |
| */ |
| int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv, |
| struct ttm_object_file *tfile, |
| uint32_t size, |
| bool shareable, |
| uint32_t *handle, |
| struct vmw_dma_buffer **p_dma_buf) |
| { |
| struct vmw_user_dma_buffer *user_bo; |
| struct ttm_buffer_object *tmp; |
| int ret; |
| |
| user_bo = kzalloc(sizeof(*user_bo), GFP_KERNEL); |
| if (unlikely(user_bo == NULL)) { |
| DRM_ERROR("Failed to allocate a buffer.\n"); |
| return -ENOMEM; |
| } |
| |
| ret = vmw_dmabuf_init(dev_priv, &user_bo->dma, size, |
| &vmw_vram_sys_placement, true, |
| &vmw_user_dmabuf_destroy); |
| if (unlikely(ret != 0)) |
| return ret; |
| |
| tmp = ttm_bo_reference(&user_bo->dma.base); |
| ret = ttm_base_object_init(tfile, |
| &user_bo->base, |
| shareable, |
| ttm_buffer_type, |
| &vmw_user_dmabuf_release, NULL); |
| if (unlikely(ret != 0)) { |
| ttm_bo_unref(&tmp); |
| goto out_no_base_object; |
| } |
| |
| *p_dma_buf = &user_bo->dma; |
| *handle = user_bo->base.hash.key; |
| |
| out_no_base_object: |
| return ret; |
| } |
| |
| int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| struct vmw_private *dev_priv = vmw_priv(dev); |
| union drm_vmw_alloc_dmabuf_arg *arg = |
| (union drm_vmw_alloc_dmabuf_arg *)data; |
| struct drm_vmw_alloc_dmabuf_req *req = &arg->req; |
| struct drm_vmw_dmabuf_rep *rep = &arg->rep; |
| struct vmw_dma_buffer *dma_buf; |
| uint32_t handle; |
| struct vmw_master *vmaster = vmw_master(file_priv->master); |
| int ret; |
| |
| ret = ttm_read_lock(&vmaster->lock, true); |
| if (unlikely(ret != 0)) |
| return ret; |
| |
| ret = vmw_user_dmabuf_alloc(dev_priv, vmw_fpriv(file_priv)->tfile, |
| req->size, false, &handle, &dma_buf); |
| if (unlikely(ret != 0)) |
| goto out_no_dmabuf; |
| |
| rep->handle = handle; |
| rep->map_handle = dma_buf->base.addr_space_offset; |
| rep->cur_gmr_id = handle; |
| rep->cur_gmr_offset = 0; |
| |
| vmw_dmabuf_unreference(&dma_buf); |
| |
| out_no_dmabuf: |
| ttm_read_unlock(&vmaster->lock); |
| |
| return ret; |
| } |
| |
| int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| struct drm_vmw_unref_dmabuf_arg *arg = |
| (struct drm_vmw_unref_dmabuf_arg *)data; |
| |
| return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile, |
| arg->handle, |
| TTM_REF_USAGE); |
| } |
| |
| int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile, |
| uint32_t handle, struct vmw_dma_buffer **out) |
| { |
| struct vmw_user_dma_buffer *vmw_user_bo; |
| struct ttm_base_object *base; |
| |
| base = ttm_base_object_lookup(tfile, handle); |
| if (unlikely(base == NULL)) { |
| printk(KERN_ERR "Invalid buffer object handle 0x%08lx.\n", |
| (unsigned long)handle); |
| return -ESRCH; |
| } |
| |
| if (unlikely(base->object_type != ttm_buffer_type)) { |
| ttm_base_object_unref(&base); |
| printk(KERN_ERR "Invalid buffer object handle 0x%08lx.\n", |
| (unsigned long)handle); |
| return -EINVAL; |
| } |
| |
| vmw_user_bo = container_of(base, struct vmw_user_dma_buffer, base); |
| (void)ttm_bo_reference(&vmw_user_bo->dma.base); |
| ttm_base_object_unref(&base); |
| *out = &vmw_user_bo->dma; |
| |
| return 0; |
| } |
| |
| int vmw_user_dmabuf_reference(struct ttm_object_file *tfile, |
| struct vmw_dma_buffer *dma_buf) |
| { |
| struct vmw_user_dma_buffer *user_bo; |
| |
| if (dma_buf->base.destroy != vmw_user_dmabuf_destroy) |
| return -EINVAL; |
| |
| user_bo = container_of(dma_buf, struct vmw_user_dma_buffer, dma); |
| return ttm_ref_object_add(tfile, &user_bo->base, TTM_REF_USAGE, NULL); |
| } |
| |
| /* |
| * Stream management |
| */ |
| |
| static void vmw_stream_destroy(struct vmw_resource *res) |
| { |
| struct vmw_private *dev_priv = res->dev_priv; |
| struct vmw_stream *stream; |
| int ret; |
| |
| DRM_INFO("%s: unref\n", __func__); |
| stream = container_of(res, struct vmw_stream, res); |
| |
| ret = vmw_overlay_unref(dev_priv, stream->stream_id); |
| WARN_ON(ret != 0); |
| } |
| |
| static int vmw_stream_init(struct vmw_private *dev_priv, |
| struct vmw_stream *stream, |
| void (*res_free) (struct vmw_resource *res)) |
| { |
| struct vmw_resource *res = &stream->res; |
| int ret; |
| |
| ret = vmw_resource_init(dev_priv, res, false, res_free, |
| &vmw_stream_func); |
| |
| if (unlikely(ret != 0)) { |
| if (res_free == NULL) |
| kfree(stream); |
| else |
| res_free(&stream->res); |
| return ret; |
| } |
| |
| ret = vmw_overlay_claim(dev_priv, &stream->stream_id); |
| if (ret) { |
| vmw_resource_unreference(&res); |
| return ret; |
| } |
| |
| DRM_INFO("%s: claimed\n", __func__); |
| |
| vmw_resource_activate(&stream->res, vmw_stream_destroy); |
| return 0; |
| } |
| |
| static void vmw_user_stream_free(struct vmw_resource *res) |
| { |
| struct vmw_user_stream *stream = |
| container_of(res, struct vmw_user_stream, stream.res); |
| struct vmw_private *dev_priv = res->dev_priv; |
| |
| ttm_base_object_kfree(stream, base); |
| ttm_mem_global_free(vmw_mem_glob(dev_priv), |
| vmw_user_stream_size); |
| } |
| |
| /** |
| * This function is called when user space has no more references on the |
| * base object. It releases the base-object's reference on the resource object. |
| */ |
| |
| static void vmw_user_stream_base_release(struct ttm_base_object **p_base) |
| { |
| struct ttm_base_object *base = *p_base; |
| struct vmw_user_stream *stream = |
| container_of(base, struct vmw_user_stream, base); |
| struct vmw_resource *res = &stream->stream.res; |
| |
| *p_base = NULL; |
| vmw_resource_unreference(&res); |
| } |
| |
| int vmw_stream_unref_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| struct vmw_private *dev_priv = vmw_priv(dev); |
| struct vmw_resource *res; |
| struct vmw_user_stream *stream; |
| struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data; |
| struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
| struct idr *idr = &dev_priv->res_idr[vmw_res_stream]; |
| int ret = 0; |
| |
| |
| res = vmw_resource_lookup(dev_priv, idr, arg->stream_id); |
| if (unlikely(res == NULL)) |
| return -EINVAL; |
| |
| if (res->res_free != &vmw_user_stream_free) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| stream = container_of(res, struct vmw_user_stream, stream.res); |
| if (stream->base.tfile != tfile) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| ttm_ref_object_base_unref(tfile, stream->base.hash.key, TTM_REF_USAGE); |
| out: |
| vmw_resource_unreference(&res); |
| return ret; |
| } |
| |
| int vmw_stream_claim_ioctl(struct drm_device *dev, void *data, |
| struct drm_file *file_priv) |
| { |
| struct vmw_private *dev_priv = vmw_priv(dev); |
| struct vmw_user_stream *stream; |
| struct vmw_resource *res; |
| struct vmw_resource *tmp; |
| struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data; |
| struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
| struct vmw_master *vmaster = vmw_master(file_priv->master); |
| int ret; |
| |
| /* |
| * Approximate idr memory usage with 128 bytes. It will be limited |
| * by maximum number_of streams anyway? |
| */ |
| |
| if (unlikely(vmw_user_stream_size == 0)) |
| vmw_user_stream_size = ttm_round_pot(sizeof(*stream)) + 128; |
| |
| ret = ttm_read_lock(&vmaster->lock, true); |
| if (unlikely(ret != 0)) |
| return ret; |
| |
| ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv), |
| vmw_user_stream_size, |
| false, true); |
| if (unlikely(ret != 0)) { |
| if (ret != -ERESTARTSYS) |
| DRM_ERROR("Out of graphics memory for stream" |
| " creation.\n"); |
| goto out_unlock; |
| } |
| |
| |
| stream = kmalloc(sizeof(*stream), GFP_KERNEL); |
| if (unlikely(stream == NULL)) { |
| ttm_mem_global_free(vmw_mem_glob(dev_priv), |
| vmw_user_stream_size); |
| ret = -ENOMEM; |
| goto out_unlock; |
| } |
| |
| res = &stream->stream.res; |
| stream->base.shareable = false; |
| stream->base.tfile = NULL; |
| |
| /* |
| * From here on, the destructor takes over resource freeing. |
| */ |
| |
| ret = vmw_stream_init(dev_priv, &stream->stream, vmw_user_stream_free); |
| if (unlikely(ret != 0)) |
| goto out_unlock; |
| |
| tmp = vmw_resource_reference(res); |
| ret = ttm_base_object_init(tfile, &stream->base, false, VMW_RES_STREAM, |
| &vmw_user_stream_base_release, NULL); |
| |
| if (unlikely(ret != 0)) { |
| vmw_resource_unreference(&tmp); |
| goto out_err; |
| } |
| |
| arg->stream_id = res->id; |
| out_err: |
| vmw_resource_unreference(&res); |
| out_unlock: |
| ttm_read_unlock(&vmaster->lock); |
| return ret; |
| } |
| |
| int vmw_user_stream_lookup(struct vmw_private *dev_priv, |
| struct ttm_object_file *tfile, |
| uint32_t *inout_id, struct vmw_resource **out) |
| { |
| struct vmw_user_stream *stream; |
| struct vmw_resource *res; |
| int ret; |
| |
| res = vmw_resource_lookup(dev_priv, &dev_priv->res_idr[vmw_res_stream], |
| *inout_id); |
| if (unlikely(res == NULL)) |
| return -EINVAL; |
| |
| if (res->res_free != &vmw_user_stream_free) { |
| ret = -EINVAL; |
| goto err_ref; |
| } |
| |
| stream = container_of(res, struct vmw_user_stream, stream.res); |
| if (stream->base.tfile != tfile) { |
| ret = -EPERM; |
| goto err_ref; |
| } |
| |
| *inout_id = stream->stream.stream_id; |
| *out = res; |
| return 0; |
| err_ref: |
| vmw_resource_unreference(&res); |
| return ret; |
| } |
| |
| |
| int vmw_dumb_create(struct drm_file *file_priv, |
| struct drm_device *dev, |
| struct drm_mode_create_dumb *args) |
| { |
| struct vmw_private *dev_priv = vmw_priv(dev); |
| struct vmw_master *vmaster = vmw_master(file_priv->master); |
| struct vmw_user_dma_buffer *vmw_user_bo; |
| struct ttm_buffer_object *tmp; |
| int ret; |
| |
| args->pitch = args->width * ((args->bpp + 7) / 8); |
| args->size = args->pitch * args->height; |
| |
| vmw_user_bo = kzalloc(sizeof(*vmw_user_bo), GFP_KERNEL); |
| if (vmw_user_bo == NULL) |
| return -ENOMEM; |
| |
| ret = ttm_read_lock(&vmaster->lock, true); |
| if (ret != 0) { |
| kfree(vmw_user_bo); |
| return ret; |
| } |
| |
| ret = vmw_dmabuf_init(dev_priv, &vmw_user_bo->dma, args->size, |
| &vmw_vram_sys_placement, true, |
| &vmw_user_dmabuf_destroy); |
| if (ret != 0) |
| goto out_no_dmabuf; |
| |
| tmp = ttm_bo_reference(&vmw_user_bo->dma.base); |
| ret = ttm_base_object_init(vmw_fpriv(file_priv)->tfile, |
| &vmw_user_bo->base, |
| false, |
| ttm_buffer_type, |
| &vmw_user_dmabuf_release, NULL); |
| if (unlikely(ret != 0)) |
| goto out_no_base_object; |
| |
| args->handle = vmw_user_bo->base.hash.key; |
| |
| out_no_base_object: |
| ttm_bo_unref(&tmp); |
| out_no_dmabuf: |
| ttm_read_unlock(&vmaster->lock); |
| return ret; |
| } |
| |
| int vmw_dumb_map_offset(struct drm_file *file_priv, |
| struct drm_device *dev, uint32_t handle, |
| uint64_t *offset) |
| { |
| struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
| struct vmw_dma_buffer *out_buf; |
| int ret; |
| |
| ret = vmw_user_dmabuf_lookup(tfile, handle, &out_buf); |
| if (ret != 0) |
| return -EINVAL; |
| |
| *offset = out_buf->base.addr_space_offset; |
| vmw_dmabuf_unreference(&out_buf); |
| return 0; |
| } |
| |
| int vmw_dumb_destroy(struct drm_file *file_priv, |
| struct drm_device *dev, |
| uint32_t handle) |
| { |
| return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile, |
| handle, TTM_REF_USAGE); |
| } |
| |
| /** |
| * vmw_resource_buf_alloc - Allocate a backup buffer for a resource. |
| * |
| * @res: The resource for which to allocate a backup buffer. |
| * @interruptible: Whether any sleeps during allocation should be |
| * performed while interruptible. |
| */ |
| static int vmw_resource_buf_alloc(struct vmw_resource *res, |
| bool interruptible) |
| { |
| unsigned long size = |
| (res->backup_size + PAGE_SIZE - 1) & PAGE_MASK; |
| struct vmw_dma_buffer *backup; |
| int ret; |
| |
| if (likely(res->backup)) { |
| BUG_ON(res->backup->base.num_pages * PAGE_SIZE < size); |
| return 0; |
| } |
| |
| backup = kzalloc(sizeof(*backup), GFP_KERNEL); |
| if (unlikely(backup == NULL)) |
| return -ENOMEM; |
| |
| ret = vmw_dmabuf_init(res->dev_priv, backup, res->backup_size, |
| res->func->backup_placement, |
| interruptible, |
| &vmw_dmabuf_bo_free); |
| if (unlikely(ret != 0)) |
| goto out_no_dmabuf; |
| |
| res->backup = backup; |
| |
| out_no_dmabuf: |
| return ret; |
| } |
| |
| /** |
| * vmw_resource_do_validate - Make a resource up-to-date and visible |
| * to the device. |
| * |
| * @res: The resource to make visible to the device. |
| * @val_buf: Information about a buffer possibly |
| * containing backup data if a bind operation is needed. |
| * |
| * On hardware resource shortage, this function returns -EBUSY and |
| * should be retried once resources have been freed up. |
| */ |
| static int vmw_resource_do_validate(struct vmw_resource *res, |
| struct ttm_validate_buffer *val_buf) |
| { |
| int ret = 0; |
| const struct vmw_res_func *func = res->func; |
| |
| if (unlikely(res->id == -1)) { |
| ret = func->create(res); |
| if (unlikely(ret != 0)) |
| return ret; |
| } |
| |
| if (func->bind && |
| ((func->needs_backup && list_empty(&res->mob_head) && |
| val_buf->bo != NULL) || |
| (!func->needs_backup && val_buf->bo != NULL))) { |
| ret = func->bind(res, val_buf); |
| if (unlikely(ret != 0)) |
| goto out_bind_failed; |
| if (func->needs_backup) |
| list_add_tail(&res->mob_head, &res->backup->res_list); |
| } |
| |
| /* |
| * Only do this on write operations, and move to |
| * vmw_resource_unreserve if it can be called after |
| * backup buffers have been unreserved. Otherwise |
| * sort out locking. |
| */ |
| res->res_dirty = true; |
| |
| return 0; |
| |
| out_bind_failed: |
| func->destroy(res); |
| |
| return ret; |
| } |
| |
| /** |
| * vmw_resource_unreserve - Unreserve a resource previously reserved for |
| * command submission. |
| * |
| * @res: Pointer to the struct vmw_resource to unreserve. |
| * @new_backup: Pointer to new backup buffer if command submission |
| * switched. |
| * @new_backup_offset: New backup offset if @new_backup is !NULL. |
| * |
| * Currently unreserving a resource means putting it back on the device's |
| * resource lru list, so that it can be evicted if necessary. |
| */ |
| void vmw_resource_unreserve(struct vmw_resource *res, |
| struct vmw_dma_buffer *new_backup, |
| unsigned long new_backup_offset) |
| { |
| struct vmw_private *dev_priv = res->dev_priv; |
| |
| if (!list_empty(&res->lru_head)) |
| return; |
| |
| if (new_backup && new_backup != res->backup) { |
| |
| if (res->backup) { |
| BUG_ON(atomic_read(&res->backup->base.reserved) == 0); |
| list_del_init(&res->mob_head); |
| vmw_dmabuf_unreference(&res->backup); |
| } |
| |
| res->backup = vmw_dmabuf_reference(new_backup); |
| BUG_ON(atomic_read(&new_backup->base.reserved) == 0); |
| list_add_tail(&res->mob_head, &new_backup->res_list); |
| } |
| if (new_backup) |
| res->backup_offset = new_backup_offset; |
| |
| if (!res->func->may_evict) |
| return; |
| |
| write_lock(&dev_priv->resource_lock); |
| list_add_tail(&res->lru_head, |
| &res->dev_priv->res_lru[res->func->res_type]); |
| write_unlock(&dev_priv->resource_lock); |
| } |
| |
| /** |
| * vmw_resource_check_buffer - Check whether a backup buffer is needed |
| * for a resource and in that case, allocate |
| * one, reserve and validate it. |
| * |
| * @res: The resource for which to allocate a backup buffer. |
| * @interruptible: Whether any sleeps during allocation should be |
| * performed while interruptible. |
| * @val_buf: On successful return contains data about the |
| * reserved and validated backup buffer. |
| */ |
| int vmw_resource_check_buffer(struct vmw_resource *res, |
| bool interruptible, |
| struct ttm_validate_buffer *val_buf) |
| { |
| struct list_head val_list; |
| bool backup_dirty = false; |
| int ret; |
| |
| if (unlikely(res->backup == NULL)) { |
| ret = vmw_resource_buf_alloc(res, interruptible); |
| if (unlikely(ret != 0)) |
| return ret; |
| } |
| |
| INIT_LIST_HEAD(&val_list); |
| val_buf->bo = ttm_bo_reference(&res->backup->base); |
| list_add_tail(&val_buf->head, &val_list); |
| ret = ttm_eu_reserve_buffers(&val_list); |
| if (unlikely(ret != 0)) |
| goto out_no_reserve; |
| |
| if (res->func->needs_backup && list_empty(&res->mob_head)) |
| return 0; |
| |
| backup_dirty = res->backup_dirty; |
| ret = ttm_bo_validate(&res->backup->base, |
| res->func->backup_placement, |
| true, false, false); |
| |
| if (unlikely(ret != 0)) |
| goto out_no_validate; |
| |
| return 0; |
| |
| out_no_validate: |
| ttm_eu_backoff_reservation(&val_list); |
| out_no_reserve: |
| ttm_bo_unref(&val_buf->bo); |
| if (backup_dirty) |
| vmw_dmabuf_unreference(&res->backup); |
| |
| return ret; |
| } |
| |
| /** |
| * vmw_resource_reserve - Reserve a resource for command submission |
| * |
| * @res: The resource to reserve. |
| * |
| * This function takes the resource off the LRU list and make sure |
| * a backup buffer is present for guest-backed resources. However, |
| * the buffer may not be bound to the resource at this point. |
| * |
| */ |
| int vmw_resource_reserve(struct vmw_resource *res, bool no_backup) |
| { |
| struct vmw_private *dev_priv = res->dev_priv; |
| int ret; |
| |
| write_lock(&dev_priv->resource_lock); |
| list_del_init(&res->lru_head); |
| write_unlock(&dev_priv->resource_lock); |
| |
| if (res->func->needs_backup && res->backup == NULL && |
| !no_backup) { |
| ret = vmw_resource_buf_alloc(res, true); |
| if (unlikely(ret != 0)) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * vmw_resource_backoff_reservation - Unreserve and unreference a |
| * backup buffer |
| *. |
| * @val_buf: Backup buffer information. |
| */ |
| void vmw_resource_backoff_reservation(struct ttm_validate_buffer *val_buf) |
| { |
| struct list_head val_list; |
| |
| if (likely(val_buf->bo == NULL)) |
| return; |
| |
| INIT_LIST_HEAD(&val_list); |
| list_add_tail(&val_buf->head, &val_list); |
| ttm_eu_backoff_reservation(&val_list); |
| ttm_bo_unref(&val_buf->bo); |
| } |
| |
| /** |
| * vmw_resource_do_evict - Evict a resource, and transfer its data |
| * to a backup buffer. |
| * |
| * @res: The resource to evict. |
| */ |
| int vmw_resource_do_evict(struct vmw_resource *res) |
| { |
| struct ttm_validate_buffer val_buf; |
| const struct vmw_res_func *func = res->func; |
| int ret; |
| |
| BUG_ON(!func->may_evict); |
| |
| val_buf.bo = NULL; |
| ret = vmw_resource_check_buffer(res, true, &val_buf); |
| if (unlikely(ret != 0)) |
| return ret; |
| |
| if (unlikely(func->unbind != NULL && |
| (!func->needs_backup || !list_empty(&res->mob_head)))) { |
| ret = func->unbind(res, res->res_dirty, &val_buf); |
| if (unlikely(ret != 0)) |
| goto out_no_unbind; |
| list_del_init(&res->mob_head); |
| } |
| ret = func->destroy(res); |
| res->backup_dirty = true; |
| res->res_dirty = false; |
| out_no_unbind: |
| vmw_resource_backoff_reservation(&val_buf); |
| |
| return ret; |
| } |
| |
| |
| /** |
| * vmw_resource_validate - Make a resource up-to-date and visible |
| * to the device. |
| * |
| * @res: The resource to make visible to the device. |
| * |
| * On succesful return, any backup DMA buffer pointed to by @res->backup will |
| * be reserved and validated. |
| * On hardware resource shortage, this function will repeatedly evict |
| * resources of the same type until the validation succeeds. |
| */ |
| int vmw_resource_validate(struct vmw_resource *res) |
| { |
| int ret; |
| struct vmw_resource *evict_res; |
| struct vmw_private *dev_priv = res->dev_priv; |
| struct list_head *lru_list = &dev_priv->res_lru[res->func->res_type]; |
| struct ttm_validate_buffer val_buf; |
| |
| if (likely(!res->func->may_evict)) |
| return 0; |
| |
| val_buf.bo = NULL; |
| if (res->backup) |
| val_buf.bo = &res->backup->base; |
| do { |
| ret = vmw_resource_do_validate(res, &val_buf); |
| if (likely(ret != -EBUSY)) |
| break; |
| |
| write_lock(&dev_priv->resource_lock); |
| if (list_empty(lru_list) || !res->func->may_evict) { |
| DRM_ERROR("Out of device device id entries " |
| "for %s.\n", res->func->type_name); |
| ret = -EBUSY; |
| write_unlock(&dev_priv->resource_lock); |
| break; |
| } |
| |
| evict_res = vmw_resource_reference |
| (list_first_entry(lru_list, struct vmw_resource, |
| lru_head)); |
| list_del_init(&evict_res->lru_head); |
| |
| write_unlock(&dev_priv->resource_lock); |
| vmw_resource_do_evict(evict_res); |
| vmw_resource_unreference(&evict_res); |
| } while (1); |
| |
| if (unlikely(ret != 0)) |
| goto out_no_validate; |
| else if (!res->func->needs_backup && res->backup) { |
| list_del_init(&res->mob_head); |
| vmw_dmabuf_unreference(&res->backup); |
| } |
| |
| return 0; |
| |
| out_no_validate: |
| return ret; |
| } |
| |
| /** |
| * vmw_fence_single_bo - Utility function to fence a single TTM buffer |
| * object without unreserving it. |
| * |
| * @bo: Pointer to the struct ttm_buffer_object to fence. |
| * @fence: Pointer to the fence. If NULL, this function will |
| * insert a fence into the command stream.. |
| * |
| * Contrary to the ttm_eu version of this function, it takes only |
| * a single buffer object instead of a list, and it also doesn't |
| * unreserve the buffer object, which needs to be done separately. |
| */ |
| void vmw_fence_single_bo(struct ttm_buffer_object *bo, |
| struct vmw_fence_obj *fence) |
| { |
| struct ttm_bo_device *bdev = bo->bdev; |
| struct ttm_bo_driver *driver = bdev->driver; |
| struct vmw_fence_obj *old_fence_obj; |
| struct vmw_private *dev_priv = |
| container_of(bdev, struct vmw_private, bdev); |
| |
| if (fence == NULL) |
| vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL); |
| else |
| driver->sync_obj_ref(fence); |
| |
| spin_lock(&bdev->fence_lock); |
| |
| old_fence_obj = bo->sync_obj; |
| bo->sync_obj = fence; |
| |
| spin_unlock(&bdev->fence_lock); |
| |
| if (old_fence_obj) |
| vmw_fence_obj_unreference(&old_fence_obj); |
| } |
| |
| /** |
| * vmw_resource_move_notify - TTM move_notify_callback |
| * |
| * @bo: The TTM buffer object about to move. |
| * @mem: The truct ttm_mem_reg indicating to what memory |
| * region the move is taking place. |
| * |
| * For now does nothing. |
| */ |
| void vmw_resource_move_notify(struct ttm_buffer_object *bo, |
| struct ttm_mem_reg *mem) |
| { |
| } |
| |
| /** |
| * vmw_resource_needs_backup - Return whether a resource needs a backup buffer. |
| * |
| * @res: The resource being queried. |
| */ |
| bool vmw_resource_needs_backup(const struct vmw_resource *res) |
| { |
| return res->func->needs_backup; |
| } |
| |
| /** |
| * vmw_resource_evict_type - Evict all resources of a specific type |
| * |
| * @dev_priv: Pointer to a device private struct |
| * @type: The resource type to evict |
| * |
| * To avoid thrashing starvation or as part of the hibernation sequence, |
| * evict all evictable resources of a specific type. |
| */ |
| static void vmw_resource_evict_type(struct vmw_private *dev_priv, |
| enum vmw_res_type type) |
| { |
| struct list_head *lru_list = &dev_priv->res_lru[type]; |
| struct vmw_resource *evict_res; |
| |
| do { |
| write_lock(&dev_priv->resource_lock); |
| |
| if (list_empty(lru_list)) |
| goto out_unlock; |
| |
| evict_res = vmw_resource_reference( |
| list_first_entry(lru_list, struct vmw_resource, |
| lru_head)); |
| list_del_init(&evict_res->lru_head); |
| write_unlock(&dev_priv->resource_lock); |
| vmw_resource_do_evict(evict_res); |
| vmw_resource_unreference(&evict_res); |
| } while (1); |
| |
| out_unlock: |
| write_unlock(&dev_priv->resource_lock); |
| } |
| |
| /** |
| * vmw_resource_evict_all - Evict all evictable resources |
| * |
| * @dev_priv: Pointer to a device private struct |
| * |
| * To avoid thrashing starvation or as part of the hibernation sequence, |
| * evict all evictable resources. In particular this means that all |
| * guest-backed resources that are registered with the device are |
| * evicted and the OTable becomes clean. |
| */ |
| void vmw_resource_evict_all(struct vmw_private *dev_priv) |
| { |
| enum vmw_res_type type; |
| |
| mutex_lock(&dev_priv->cmdbuf_mutex); |
| |
| for (type = 0; type < vmw_res_max; ++type) |
| vmw_resource_evict_type(dev_priv, type); |
| |
| mutex_unlock(&dev_priv->cmdbuf_mutex); |
| } |