diff options
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_resource.c')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 2019 |
1 files changed, 663 insertions, 1356 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c index da3c6b5b98a1..e01a17b407b2 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c @@ -30,17 +30,7 @@ #include <drm/ttm/ttm_object.h> #include <drm/ttm/ttm_placement.h> #include <drm/drmP.h> - -struct vmw_user_context { - struct ttm_base_object base; - struct vmw_resource res; -}; - -struct vmw_user_surface { - struct ttm_base_object base; - struct vmw_surface srf; - uint32_t size; -}; +#include "vmwgfx_resource_priv.h" struct vmw_user_dma_buffer { struct ttm_base_object base; @@ -62,17 +52,21 @@ struct vmw_user_stream { struct vmw_stream stream; }; -struct vmw_surface_offset { - uint32_t face; - uint32_t mip; - uint32_t bo_offset; -}; - -static uint64_t vmw_user_context_size; -static uint64_t vmw_user_surface_size; 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 +}; + static inline struct vmw_dma_buffer * vmw_dma_buffer(struct ttm_buffer_object *bo) { @@ -100,13 +94,14 @@ struct vmw_resource *vmw_resource_reference(struct vmw_resource *res) * * Release the resource id to the resource id manager and set it to -1 */ -static void vmw_resource_release_id(struct vmw_resource *res) +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(res->idr, res->id); + idr_remove(idr, res->id); res->id = -1; write_unlock(&dev_priv->resource_lock); } @@ -116,17 +111,33 @@ 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 = res->id; - struct idr *idr = res->idr; + int id; + struct idr *idr = &dev_priv->res_idr[res->func->res_type]; res->avail = false; - if (res->remove_from_lists != NULL) - res->remove_from_lists(res); + 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 @@ -153,25 +164,25 @@ void vmw_resource_unreference(struct vmw_resource **p_res) /** * vmw_resource_alloc_id - release a resource id to the id manager. * - * @dev_priv: Pointer to the device private structure. * @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_private *dev_priv, - struct vmw_resource *res) +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(res->idr, GFP_KERNEL) == 0)) + if (unlikely(idr_pre_get(idr, GFP_KERNEL) == 0)) return -ENOMEM; write_lock(&dev_priv->resource_lock); - ret = idr_get_new_above(res->idr, res, 1, &res->id); + ret = idr_get_new_above(idr, res, 1, &res->id); write_unlock(&dev_priv->resource_lock); } while (ret == -EAGAIN); @@ -179,31 +190,39 @@ static int vmw_resource_alloc_id(struct vmw_private *dev_priv, return ret; } - -static int vmw_resource_init(struct vmw_private *dev_priv, - struct vmw_resource *res, - struct idr *idr, - enum ttm_object_type obj_type, - bool delay_id, - void (*res_free) (struct vmw_resource *res), - void (*remove_from_lists) - (struct vmw_resource *res)) +/** + * 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. + */ +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->remove_from_lists = remove_from_lists; - res->res_type = obj_type; - res->idr = idr; res->avail = false; res->dev_priv = dev_priv; - INIT_LIST_HEAD(&res->query_head); - INIT_LIST_HEAD(&res->validate_head); + 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(dev_priv, res); + return vmw_resource_alloc_id(res); } /** @@ -218,9 +237,8 @@ static int vmw_resource_init(struct vmw_private *dev_priv, * 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 *)) +void vmw_resource_activate(struct vmw_resource *res, + void (*hw_destroy) (struct vmw_resource *)) { struct vmw_private *dev_priv = res->dev_priv; @@ -250,994 +268,41 @@ struct vmw_resource *vmw_resource_lookup(struct vmw_private *dev_priv, } /** - * 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, true, res->id); - - 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, &dev_priv->context_idr, - VMW_RES_CONTEXT, false, res_free, NULL); - - 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 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; - - kfree(ctx); - 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 vmw_private *dev_priv = vmw_priv(dev); - struct vmw_resource *res; - struct vmw_user_context *ctx; - struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data; - struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; - int ret = 0; - - res = vmw_resource_lookup(dev_priv, &dev_priv->context_idr, arg->cid); - if (unlikely(res == NULL)) - return -EINVAL; - - if (res->res_free != &vmw_user_context_free) { - ret = -EINVAL; - goto out; - } - - ctx = container_of(res, struct vmw_user_context, res); - if (ctx->base.tfile != tfile && !ctx->base.shareable) { - ret = -EPERM; - goto out; - } - - ttm_ref_object_base_unref(tfile, ctx->base.hash.key, TTM_REF_USAGE); -out: - vmw_resource_unreference(&res); - return ret; -} - -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 = kmalloc(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 = res->id; -out_err: - vmw_resource_unreference(&res); -out_unlock: - ttm_read_unlock(&vmaster->lock); - return ret; - -} - -int vmw_context_check(struct vmw_private *dev_priv, - struct ttm_object_file *tfile, - int id, - struct vmw_resource **p_res) -{ - struct vmw_resource *res; - int ret = 0; - - read_lock(&dev_priv->resource_lock); - res = idr_find(&dev_priv->context_idr, id); - if (res && res->avail) { - struct vmw_user_context *ctx = - container_of(res, struct vmw_user_context, res); - if (ctx->base.tfile != tfile && !ctx->base.shareable) - ret = -EPERM; - if (p_res) - *p_res = vmw_resource_reference(res); - } else - ret = -EINVAL; - read_unlock(&dev_priv->resource_lock); - - return ret; -} - -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} -}; - - -/** - * Surface management. - */ - -struct vmw_surface_dma { - SVGA3dCmdHeader header; - SVGA3dCmdSurfaceDMA body; - SVGA3dCopyBox cb; - SVGA3dCmdSurfaceDMASuffix suffix; -}; - -struct vmw_surface_define { - SVGA3dCmdHeader header; - SVGA3dCmdDefineSurface body; -}; - -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. + * vmw_user_resource_lookup_handle - lookup a struct resource from a + * TTM user-space handle and perform basic type checks * - * 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. + * @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. * - * @srf: Pointer to a struct vmw_surface object. - * @cmd_space: Pointer to memory area in which the commands should be encoded. + * If the handle can't be found or is associated with an incorrect resource + * type, -EINVAL will be returned. */ -static void vmw_surface_define_encode(const struct vmw_surface *srf, - void *cmd_space) +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 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; - } -}; - - -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 = container_of(res, struct vmw_surface, res); - dev_priv->used_memory_size -= srf->backup_size; - mutex_unlock(&dev_priv->cmdbuf_mutex); - - } - vmw_3d_resource_dec(dev_priv, false); -} - -void vmw_surface_res_free(struct vmw_resource *res) -{ - struct vmw_surface *srf = container_of(res, struct vmw_surface, res); - - if (srf->backup) - ttm_bo_unref(&srf->backup); - kfree(srf->offsets); - kfree(srf->sizes); - kfree(srf->snooper.image); - kfree(srf); -} - - -/** - * vmw_surface_do_validate - make a surface available to the device. - * - * @dev_priv: Pointer to a device private struct. - * @srf: Pointer to a struct vmw_surface. - * - * If the surface doesn't have a hw id, allocate one, and optionally - * DMA the backed up surface contents to the device. - * - * 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. - */ -int vmw_surface_do_validate(struct vmw_private *dev_priv, - struct vmw_surface *srf) -{ - struct vmw_resource *res = &srf->res; - struct list_head val_list; - struct ttm_validate_buffer val_buf; - uint32_t submit_size; - uint8_t *cmd; - int ret; - - if (likely(res->id != -1)) - return 0; - - if (unlikely(dev_priv->used_memory_size + srf->backup_size >= - dev_priv->memory_size)) - return -EBUSY; - - /* - * Reserve- and validate the backup DMA bo. - */ - - if (srf->backup) { - INIT_LIST_HEAD(&val_list); - val_buf.bo = ttm_bo_reference(srf->backup); - val_buf.new_sync_obj_arg = (void *)((unsigned long) - DRM_VMW_FENCE_FLAG_EXEC); - list_add_tail(&val_buf.head, &val_list); - ret = ttm_eu_reserve_buffers(&val_list); - if (unlikely(ret != 0)) - goto out_no_reserve; - - ret = ttm_bo_validate(srf->backup, &vmw_srf_placement, - true, false, false); - if (unlikely(ret != 0)) - goto out_no_validate; - } - - /* - * Alloc id for the resource. - */ - - ret = vmw_resource_alloc_id(dev_priv, 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- and dma commands. - */ - - submit_size = vmw_surface_define_size(srf); - if (srf->backup) - 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 " - "validation.\n"); - ret = -ENOMEM; - goto out_no_fifo; - } - - vmw_surface_define_encode(srf, cmd); - if (srf->backup) { - SVGAGuestPtr ptr; - - cmd += vmw_surface_define_size(srf); - vmw_bo_get_guest_ptr(srf->backup, &ptr); - vmw_surface_dma_encode(srf, cmd, &ptr, true); - } - - vmw_fifo_commit(dev_priv, submit_size); - - /* - * Create a fence object and fence the backup buffer. - */ - - if (srf->backup) { - struct vmw_fence_obj *fence; - - (void) vmw_execbuf_fence_commands(NULL, dev_priv, - &fence, NULL); - ttm_eu_fence_buffer_objects(&val_list, fence); - if (likely(fence != NULL)) - vmw_fence_obj_unreference(&fence); - ttm_bo_unref(&val_buf.bo); - ttm_bo_unref(&srf->backup); - } - - /* - * Surface memory usage accounting. - */ - - dev_priv->used_memory_size += srf->backup_size; - - return 0; - -out_no_fifo: - vmw_resource_release_id(res); -out_no_id: -out_no_validate: - if (srf->backup) - ttm_eu_backoff_reservation(&val_list); -out_no_reserve: - if (srf->backup) - ttm_bo_unref(&val_buf.bo); - return ret; -} - -/** - * vmw_surface_evict - Evict a hw surface. - * - * @dev_priv: Pointer to a device private struct. - * @srf: Pointer to a struct vmw_surface - * - * DMA the contents of a hw surface to a backup guest buffer object, - * and destroy the hw surface, releasing its id. - */ -int vmw_surface_evict(struct vmw_private *dev_priv, - struct vmw_surface *srf) -{ - struct vmw_resource *res = &srf->res; - struct list_head val_list; - struct ttm_validate_buffer val_buf; - uint32_t submit_size; - uint8_t *cmd; - int ret; - struct vmw_fence_obj *fence; - SVGAGuestPtr ptr; - - BUG_ON(res->id == -1); - - /* - * Create a surface backup buffer object. - */ - - if (!srf->backup) { - ret = ttm_bo_create(&dev_priv->bdev, srf->backup_size, - ttm_bo_type_device, - &vmw_srf_placement, 0, 0, true, - NULL, &srf->backup); - if (unlikely(ret != 0)) - return ret; - } - - /* - * Reserve- and validate the backup DMA bo. - */ - - INIT_LIST_HEAD(&val_list); - val_buf.bo = ttm_bo_reference(srf->backup); - val_buf.new_sync_obj_arg = (void *)(unsigned long) - DRM_VMW_FENCE_FLAG_EXEC; - list_add_tail(&val_buf.head, &val_list); - ret = ttm_eu_reserve_buffers(&val_list); - if (unlikely(ret != 0)) - goto out_no_reserve; - - ret = ttm_bo_validate(srf->backup, &vmw_srf_placement, - true, false, false); - if (unlikely(ret != 0)) - goto out_no_validate; - - - /* - * Encode the dma- and surface destroy commands. - */ - - submit_size = vmw_surface_dma_size(srf) + 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"); - ret = -ENOMEM; - goto out_no_fifo; - } - - vmw_bo_get_guest_ptr(srf->backup, &ptr); - vmw_surface_dma_encode(srf, cmd, &ptr, false); - cmd += vmw_surface_dma_size(srf); - vmw_surface_destroy_encode(res->id, cmd); - vmw_fifo_commit(dev_priv, submit_size); - - /* - * Surface memory usage accounting. - */ - - dev_priv->used_memory_size -= srf->backup_size; - - /* - * Create a fence object and fence the DMA buffer. - */ - - (void) vmw_execbuf_fence_commands(NULL, dev_priv, - &fence, NULL); - ttm_eu_fence_buffer_objects(&val_list, fence); - if (likely(fence != NULL)) - vmw_fence_obj_unreference(&fence); - ttm_bo_unref(&val_buf.bo); - - /* - * Release the surface ID. - */ - - vmw_resource_release_id(res); - - return 0; - -out_no_fifo: -out_no_validate: - if (srf->backup) - ttm_eu_backoff_reservation(&val_list); -out_no_reserve: - ttm_bo_unref(&val_buf.bo); - ttm_bo_unref(&srf->backup); - return ret; -} - - -/** - * vmw_surface_validate - make a surface available to the device, evicting - * other surfaces if needed. - * - * @dev_priv: Pointer to a device private struct. - * @srf: Pointer to a struct vmw_surface. - * - * Try to validate a surface and if it fails due to limited device resources, - * repeatedly try to evict other surfaces until the request can be - * acommodated. - * - * May return errors if out of resources. - */ -int vmw_surface_validate(struct vmw_private *dev_priv, - struct vmw_surface *srf) -{ - int ret; - struct vmw_surface *evict_srf; - - do { - write_lock(&dev_priv->resource_lock); - list_del_init(&srf->lru_head); - write_unlock(&dev_priv->resource_lock); - - ret = vmw_surface_do_validate(dev_priv, srf); - if (likely(ret != -EBUSY)) - break; - - write_lock(&dev_priv->resource_lock); - if (list_empty(&dev_priv->surface_lru)) { - DRM_ERROR("Out of device memory for surfaces.\n"); - ret = -EBUSY; - write_unlock(&dev_priv->resource_lock); - break; - } - - evict_srf = vmw_surface_reference - (list_first_entry(&dev_priv->surface_lru, - struct vmw_surface, - lru_head)); - list_del_init(&evict_srf->lru_head); - - write_unlock(&dev_priv->resource_lock); - (void) vmw_surface_evict(dev_priv, evict_srf); - - vmw_surface_unreference(&evict_srf); - - } while (1); - - if (unlikely(ret != 0 && srf->res.id != -1)) { - write_lock(&dev_priv->resource_lock); - list_add_tail(&srf->lru_head, &dev_priv->surface_lru); - write_unlock(&dev_priv->resource_lock); - } - - return ret; -} - - -/** - * vmw_surface_remove_from_lists - Remove surface resources from lookup lists - * - * @res: Pointer to a struct vmw_resource embedded in a struct vmw_surface - * - * As part of the resource destruction, remove the surface from any - * lookup lists. - */ -static void vmw_surface_remove_from_lists(struct vmw_resource *res) -{ - struct vmw_surface *srf = container_of(res, struct vmw_surface, res); - - list_del_init(&srf->lru_head); -} - -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); - INIT_LIST_HEAD(&srf->lru_head); - ret = vmw_resource_init(dev_priv, res, &dev_priv->surface_idr, - VMW_RES_SURFACE, true, res_free, - vmw_surface_remove_from_lists); - - if (unlikely(ret != 0)) - res_free(res); - - /* - * The surface won't be visible to hardware until a - * surface validate. - */ - - (void) vmw_3d_resource_inc(dev_priv, false); - vmw_resource_activate(res, vmw_hw_surface_destroy); - return ret; -} - -static void vmw_user_surface_free(struct vmw_resource *res) -{ - struct vmw_surface *srf = container_of(res, struct vmw_surface, res); - struct vmw_user_surface *user_srf = - container_of(srf, struct vmw_user_surface, srf); - struct vmw_private *dev_priv = srf->res.dev_priv; - uint32_t size = user_srf->size; - - if (srf->backup) - ttm_bo_unref(&srf->backup); - kfree(srf->offsets); - kfree(srf->sizes); - kfree(srf->snooper.image); - kfree(user_srf); - ttm_mem_global_free(vmw_mem_glob(dev_priv), size); -} - -/** - * vmw_resource_unreserve - unreserve resources previously reserved for - * command submission. - * - * @list_head: list of resources to unreserve. - * - * Currently only surfaces are considered, and unreserving a surface - * means putting it back on the device's surface lru list, - * so that it can be evicted if necessary. - * This function traverses the resource list and - * checks whether resources are surfaces, and in that case puts them back - * on the device's surface LRU list. - */ -void vmw_resource_unreserve(struct list_head *list) -{ - struct vmw_resource *res; - struct vmw_surface *srf; - rwlock_t *lock = NULL; - - list_for_each_entry(res, list, validate_head) { - - if (res->res_free != &vmw_surface_res_free && - res->res_free != &vmw_user_surface_free) - continue; - - if (unlikely(lock == NULL)) { - lock = &res->dev_priv->resource_lock; - write_lock(lock); - } - - srf = container_of(res, struct vmw_surface, res); - list_del_init(&srf->lru_head); - list_add_tail(&srf->lru_head, &res->dev_priv->surface_lru); - } - - if (lock != NULL) - write_unlock(lock); -} - -/** - * 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) -{ - int ret; - - BUG_ON(*out_surf || *out_buf); - - ret = vmw_user_surface_lookup_handle(dev_priv, tfile, handle, out_surf); - if (!ret) - return 0; - - ret = vmw_user_dmabuf_lookup(tfile, handle, out_buf); - return ret; -} - - -int vmw_user_surface_lookup_handle(struct vmw_private *dev_priv, - struct ttm_object_file *tfile, - uint32_t handle, struct vmw_surface **out) -{ - struct vmw_resource *res; - struct vmw_surface *srf; - struct vmw_user_surface *user_srf; 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 != VMW_RES_SURFACE)) + if (unlikely(base->object_type != converter->object_type)) goto out_bad_resource; - user_srf = container_of(base, struct vmw_user_surface, base); - srf = &user_srf->srf; - res = &srf->res; + res = converter->base_obj_to_res(base); read_lock(&dev_priv->resource_lock); - - if (!res->avail || res->res_free != &vmw_user_surface_free) { + if (!res->avail || res->res_free != converter->res_free) { read_unlock(&dev_priv->resource_lock); goto out_bad_resource; } @@ -1245,7 +310,7 @@ int vmw_user_surface_lookup_handle(struct vmw_private *dev_priv, kref_get(&res->kref); read_unlock(&dev_priv->resource_lock); - *out = srf; + *p_res = res; ret = 0; out_bad_resource: @@ -1254,286 +319,32 @@ out_bad_resource: return ret; } -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); -} - -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); -} - -int vmw_surface_define_ioctl(struct drm_device *dev, void *data, - struct drm_file *file_priv) +/** + * 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_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 = kmalloc(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; - srf->backup = NULL; - - 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; - } - - 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; - } - } - srf->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; - if (rep->sid == SVGA3D_INVALID_ID) - DRM_ERROR("Created bad Surface ID.\n"); - - 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; -} - -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; + BUG_ON(*out_surf || *out_buf); - 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; + 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_bad_resource: -out_no_reference: - ttm_base_object_unref(&base); - - return ret; -} - -int vmw_surface_check(struct vmw_private *dev_priv, - struct ttm_object_file *tfile, - uint32_t handle, int *id) -{ - struct ttm_base_object *base; - struct vmw_user_surface *user_srf; - - int ret = -EPERM; - - base = ttm_base_object_lookup(tfile, handle); - if (unlikely(base == NULL)) - return -EINVAL; - if (unlikely(base->object_type != VMW_RES_SURFACE)) - goto out_bad_surface; - - user_srf = container_of(base, struct vmw_user_surface, base); - *id = user_srf->srf.res.id; - ret = 0; - -out_bad_surface: - /** - * FIXME: May deadlock here when called from the - * command parsing code. - */ - - ttm_base_object_unref(&base); + *out_surf = NULL; + ret = vmw_user_dmabuf_lookup(tfile, handle, out_buf); return ret; } @@ -1562,11 +373,11 @@ int vmw_dmabuf_init(struct vmw_private *dev_priv, 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->validate_list); + INIT_LIST_HEAD(&vmw_bo->res_list); ret = ttm_bo_init(bdev, &vmw_bo->base, size, ttm_bo_type_device, placement, - 0, 0, interruptible, + 0, interruptible, NULL, acc_size, NULL, bo_free); return ret; } @@ -1575,7 +386,7 @@ static void vmw_user_dmabuf_destroy(struct ttm_buffer_object *bo) { struct vmw_user_dma_buffer *vmw_user_bo = vmw_user_dma_buffer(bo); - kfree(vmw_user_bo); + ttm_base_object_kfree(vmw_user_bo, base); } static void vmw_user_dmabuf_release(struct ttm_base_object **p_base) @@ -1594,6 +405,79 @@ static void vmw_user_dmabuf_release(struct ttm_base_object **p_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; +} + +/** + * vmw_user_dmabuf_verify_access - verify access permissions on this + * buffer object. + * + * @bo: Pointer to the buffer object being accessed + * @tfile: Identifying the caller. + */ +int vmw_user_dmabuf_verify_access(struct ttm_buffer_object *bo, + struct ttm_object_file *tfile) +{ + struct vmw_user_dma_buffer *vmw_user_bo; + + if (unlikely(bo->destroy != vmw_user_dmabuf_destroy)) + return -EPERM; + + vmw_user_bo = vmw_user_dma_buffer(bo); + return (vmw_user_bo->base.tfile == tfile || + vmw_user_bo->base.shareable) ? 0 : -EPERM; +} + int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { @@ -1602,44 +486,27 @@ int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data, (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_user_dma_buffer *vmw_user_bo; - struct ttm_buffer_object *tmp; + struct vmw_dma_buffer *dma_buf; + uint32_t handle; struct vmw_master *vmaster = vmw_master(file_priv->master); int ret; - vmw_user_bo = kzalloc(sizeof(*vmw_user_bo), GFP_KERNEL); - if (unlikely(vmw_user_bo == NULL)) - return -ENOMEM; - ret = ttm_read_lock(&vmaster->lock, true); - if (unlikely(ret != 0)) { - kfree(vmw_user_bo); + if (unlikely(ret != 0)) return ret; - } - ret = vmw_dmabuf_init(dev_priv, &vmw_user_bo->dma, req->size, - &vmw_vram_sys_placement, true, - &vmw_user_dmabuf_destroy); + 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; - 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; - else { - rep->handle = vmw_user_bo->base.hash.key; - rep->map_handle = vmw_user_bo->dma.base.addr_space_offset; - rep->cur_gmr_id = vmw_user_bo->base.hash.key; - rep->cur_gmr_offset = 0; - } + 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_base_object: - ttm_bo_unref(&tmp); out_no_dmabuf: ttm_read_unlock(&vmaster->lock); @@ -1657,27 +524,6 @@ int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data, TTM_REF_USAGE); } -uint32_t vmw_dmabuf_validate_node(struct ttm_buffer_object *bo, - uint32_t cur_validate_node) -{ - struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo); - - if (likely(vmw_bo->on_validate_list)) - return vmw_bo->cur_validate_node; - - vmw_bo->cur_validate_node = cur_validate_node; - vmw_bo->on_validate_list = true; - - return cur_validate_node; -} - -void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo) -{ - struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo); - - vmw_bo->on_validate_list = false; -} - int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile, uint32_t handle, struct vmw_dma_buffer **out) { @@ -1706,6 +552,18 @@ int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile, 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 */ @@ -1730,8 +588,8 @@ static int vmw_stream_init(struct vmw_private *dev_priv, struct vmw_resource *res = &stream->res; int ret; - ret = vmw_resource_init(dev_priv, res, &dev_priv->stream_idr, - VMW_RES_STREAM, false, res_free, NULL); + ret = vmw_resource_init(dev_priv, res, false, res_free, + &vmw_stream_func); if (unlikely(ret != 0)) { if (res_free == NULL) @@ -1753,17 +611,13 @@ static int vmw_stream_init(struct vmw_private *dev_priv, return 0; } -/** - * User-space context management: - */ - 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; - kfree(stream); + ttm_base_object_kfree(stream, base); ttm_mem_global_free(vmw_mem_glob(dev_priv), vmw_user_stream_size); } @@ -1792,9 +646,11 @@ int vmw_stream_unref_ioctl(struct drm_device *dev, void *data, 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, &dev_priv->stream_idr, arg->stream_id); + + res = vmw_resource_lookup(dev_priv, idr, arg->stream_id); if (unlikely(res == NULL)) return -EINVAL; @@ -1895,7 +751,8 @@ int vmw_user_stream_lookup(struct vmw_private *dev_priv, struct vmw_resource *res; int ret; - res = vmw_resource_lookup(dev_priv, &dev_priv->stream_idr, *inout_id); + res = vmw_resource_lookup(dev_priv, &dev_priv->res_idr[vmw_res_stream], + *inout_id); if (unlikely(res == NULL)) return -EINVAL; @@ -1990,3 +847,453 @@ int vmw_dumb_destroy(struct drm_file *file_priv, 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); + + 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); +} |