diff options
Diffstat (limited to 'kernel/drivers/gpu/drm/vmwgfx/vmwgfx_context.c')
| -rw-r--r-- | kernel/drivers/gpu/drm/vmwgfx/vmwgfx_context.c | 921 |
1 files changed, 921 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/vmwgfx/vmwgfx_context.c b/kernel/drivers/gpu/drm/vmwgfx/vmwgfx_context.c new file mode 100644 index 000000000..5ac928744 --- /dev/null +++ b/kernel/drivers/gpu/drm/vmwgfx/vmwgfx_context.c @@ -0,0 +1,921 @@ +/************************************************************************** + * + * Copyright © 2009-2012 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 "vmwgfx_resource_priv.h" +#include "ttm/ttm_placement.h" + +struct vmw_user_context { + struct ttm_base_object base; + struct vmw_resource res; + struct vmw_ctx_binding_state cbs; + struct vmw_cmdbuf_res_manager *man; +}; + + + +typedef int (*vmw_scrub_func)(struct vmw_ctx_bindinfo *, bool); + +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 int vmw_gb_context_create(struct vmw_resource *res); +static int vmw_gb_context_bind(struct vmw_resource *res, + struct ttm_validate_buffer *val_buf); +static int vmw_gb_context_unbind(struct vmw_resource *res, + bool readback, + struct ttm_validate_buffer *val_buf); +static int vmw_gb_context_destroy(struct vmw_resource *res); +static int vmw_context_scrub_shader(struct vmw_ctx_bindinfo *bi, bool rebind); +static int vmw_context_scrub_render_target(struct vmw_ctx_bindinfo *bi, + bool rebind); +static int vmw_context_scrub_texture(struct vmw_ctx_bindinfo *bi, bool rebind); +static void vmw_context_binding_state_scrub(struct vmw_ctx_binding_state *cbs); +static void vmw_context_binding_state_kill(struct vmw_ctx_binding_state *cbs); +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 +}; + +static const struct vmw_res_func vmw_gb_context_func = { + .res_type = vmw_res_context, + .needs_backup = true, + .may_evict = true, + .type_name = "guest backed contexts", + .backup_placement = &vmw_mob_placement, + .create = vmw_gb_context_create, + .destroy = vmw_gb_context_destroy, + .bind = vmw_gb_context_bind, + .unbind = vmw_gb_context_unbind +}; + +static const vmw_scrub_func vmw_scrub_funcs[vmw_ctx_binding_max] = { + [vmw_ctx_binding_shader] = vmw_context_scrub_shader, + [vmw_ctx_binding_rt] = vmw_context_scrub_render_target, + [vmw_ctx_binding_tex] = vmw_context_scrub_texture }; + +/** + * Context management: + */ + +static void vmw_hw_context_destroy(struct vmw_resource *res) +{ + struct vmw_user_context *uctx = + container_of(res, struct vmw_user_context, res); + struct vmw_private *dev_priv = res->dev_priv; + struct { + SVGA3dCmdHeader header; + SVGA3dCmdDestroyContext body; + } *cmd; + + + if (res->func->destroy == vmw_gb_context_destroy) { + mutex_lock(&dev_priv->cmdbuf_mutex); + vmw_cmdbuf_res_man_destroy(uctx->man); + mutex_lock(&dev_priv->binding_mutex); + (void) vmw_context_binding_state_kill(&uctx->cbs); + (void) vmw_gb_context_destroy(res); + mutex_unlock(&dev_priv->binding_mutex); + if (dev_priv->pinned_bo != NULL && + !dev_priv->query_cid_valid) + __vmw_execbuf_release_pinned_bo(dev_priv, NULL); + mutex_unlock(&dev_priv->cmdbuf_mutex); + return; + } + + 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_gb_context_init(struct vmw_private *dev_priv, + struct vmw_resource *res, + void (*res_free) (struct vmw_resource *res)) +{ + int ret; + struct vmw_user_context *uctx = + container_of(res, struct vmw_user_context, res); + + ret = vmw_resource_init(dev_priv, res, true, + res_free, &vmw_gb_context_func); + res->backup_size = SVGA3D_CONTEXT_DATA_SIZE; + if (unlikely(ret != 0)) + goto out_err; + + if (dev_priv->has_mob) { + uctx->man = vmw_cmdbuf_res_man_create(dev_priv); + if (unlikely(IS_ERR(uctx->man))) { + ret = PTR_ERR(uctx->man); + uctx->man = NULL; + goto out_err; + } + } + + memset(&uctx->cbs, 0, sizeof(uctx->cbs)); + INIT_LIST_HEAD(&uctx->cbs.list); + + vmw_resource_activate(res, vmw_hw_context_destroy); + return 0; + +out_err: + if (res_free) + res_free(res); + else + kfree(res); + return ret; +} + +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; + + if (dev_priv->has_mob) + return vmw_gb_context_init(dev_priv, res, res_free); + + 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; +} + + +static int vmw_gb_context_create(struct vmw_resource *res) +{ + struct vmw_private *dev_priv = res->dev_priv; + int ret; + struct { + SVGA3dCmdHeader header; + SVGA3dCmdDefineGBContext body; + } *cmd; + + if (likely(res->id != -1)) + return 0; + + ret = vmw_resource_alloc_id(res); + if (unlikely(ret != 0)) { + DRM_ERROR("Failed to allocate a context id.\n"); + goto out_no_id; + } + + if (unlikely(res->id >= VMWGFX_NUM_GB_CONTEXT)) { + ret = -EBUSY; + goto out_no_fifo; + } + + cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); + if (unlikely(cmd == NULL)) { + DRM_ERROR("Failed reserving FIFO space for context " + "creation.\n"); + ret = -ENOMEM; + goto out_no_fifo; + } + + cmd->header.id = SVGA_3D_CMD_DEFINE_GB_CONTEXT; + cmd->header.size = sizeof(cmd->body); + cmd->body.cid = res->id; + vmw_fifo_commit(dev_priv, sizeof(*cmd)); + (void) vmw_3d_resource_inc(dev_priv, false); + + return 0; + +out_no_fifo: + vmw_resource_release_id(res); +out_no_id: + return ret; +} + +static int vmw_gb_context_bind(struct vmw_resource *res, + struct ttm_validate_buffer *val_buf) +{ + struct vmw_private *dev_priv = res->dev_priv; + struct { + SVGA3dCmdHeader header; + SVGA3dCmdBindGBContext body; + } *cmd; + struct ttm_buffer_object *bo = val_buf->bo; + + BUG_ON(bo->mem.mem_type != VMW_PL_MOB); + + cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); + if (unlikely(cmd == NULL)) { + DRM_ERROR("Failed reserving FIFO space for context " + "binding.\n"); + return -ENOMEM; + } + + cmd->header.id = SVGA_3D_CMD_BIND_GB_CONTEXT; + cmd->header.size = sizeof(cmd->body); + cmd->body.cid = res->id; + cmd->body.mobid = bo->mem.start; + cmd->body.validContents = res->backup_dirty; + res->backup_dirty = false; + vmw_fifo_commit(dev_priv, sizeof(*cmd)); + + return 0; +} + +static int vmw_gb_context_unbind(struct vmw_resource *res, + bool readback, + struct ttm_validate_buffer *val_buf) +{ + struct vmw_private *dev_priv = res->dev_priv; + struct ttm_buffer_object *bo = val_buf->bo; + struct vmw_fence_obj *fence; + struct vmw_user_context *uctx = + container_of(res, struct vmw_user_context, res); + + struct { + SVGA3dCmdHeader header; + SVGA3dCmdReadbackGBContext body; + } *cmd1; + struct { + SVGA3dCmdHeader header; + SVGA3dCmdBindGBContext body; + } *cmd2; + uint32_t submit_size; + uint8_t *cmd; + + + BUG_ON(bo->mem.mem_type != VMW_PL_MOB); + + mutex_lock(&dev_priv->binding_mutex); + vmw_context_binding_state_scrub(&uctx->cbs); + + submit_size = sizeof(*cmd2) + (readback ? sizeof(*cmd1) : 0); + + cmd = vmw_fifo_reserve(dev_priv, submit_size); + if (unlikely(cmd == NULL)) { + DRM_ERROR("Failed reserving FIFO space for context " + "unbinding.\n"); + mutex_unlock(&dev_priv->binding_mutex); + return -ENOMEM; + } + + cmd2 = (void *) cmd; + if (readback) { + cmd1 = (void *) cmd; + cmd1->header.id = SVGA_3D_CMD_READBACK_GB_CONTEXT; + cmd1->header.size = sizeof(cmd1->body); + cmd1->body.cid = res->id; + cmd2 = (void *) (&cmd1[1]); + } + cmd2->header.id = SVGA_3D_CMD_BIND_GB_CONTEXT; + cmd2->header.size = sizeof(cmd2->body); + cmd2->body.cid = res->id; + cmd2->body.mobid = SVGA3D_INVALID_ID; + + vmw_fifo_commit(dev_priv, submit_size); + mutex_unlock(&dev_priv->binding_mutex); + + /* + * Create a fence object and fence the backup buffer. + */ + + (void) vmw_execbuf_fence_commands(NULL, dev_priv, + &fence, NULL); + + vmw_fence_single_bo(bo, fence); + + if (likely(fence != NULL)) + vmw_fence_obj_unreference(&fence); + + return 0; +} + +static int vmw_gb_context_destroy(struct vmw_resource *res) +{ + struct vmw_private *dev_priv = res->dev_priv; + struct { + SVGA3dCmdHeader header; + SVGA3dCmdDestroyGBContext body; + } *cmd; + + if (likely(res->id == -1)) + return 0; + + cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); + if (unlikely(cmd == NULL)) { + DRM_ERROR("Failed reserving FIFO space for context " + "destruction.\n"); + return -ENOMEM; + } + + cmd->header.id = SVGA_3D_CMD_DESTROY_GB_CONTEXT; + cmd->header.size = sizeof(cmd->body); + cmd->body.cid = res->id; + vmw_fifo_commit(dev_priv, sizeof(*cmd)); + if (dev_priv->query_cid == res->id) + dev_priv->query_cid_valid = false; + vmw_resource_release_id(res); + vmw_3d_resource_dec(dev_priv, false); + + return 0; +} + +/** + * 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; + 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 + + ((dev_priv->has_mob) ? vmw_cmdbuf_res_man_size() : 0); + + ret = ttm_read_lock(&dev_priv->reservation_sem, 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(&dev_priv->reservation_sem); + return ret; + +} + +/** + * vmw_context_scrub_shader - scrub a shader binding from a context. + * + * @bi: single binding information. + * @rebind: Whether to issue a bind instead of scrub command. + */ +static int vmw_context_scrub_shader(struct vmw_ctx_bindinfo *bi, bool rebind) +{ + struct vmw_private *dev_priv = bi->ctx->dev_priv; + struct { + SVGA3dCmdHeader header; + SVGA3dCmdSetShader body; + } *cmd; + + cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); + if (unlikely(cmd == NULL)) { + DRM_ERROR("Failed reserving FIFO space for shader " + "unbinding.\n"); + return -ENOMEM; + } + + cmd->header.id = SVGA_3D_CMD_SET_SHADER; + cmd->header.size = sizeof(cmd->body); + cmd->body.cid = bi->ctx->id; + cmd->body.type = bi->i1.shader_type; + cmd->body.shid = ((rebind) ? bi->res->id : SVGA3D_INVALID_ID); + vmw_fifo_commit(dev_priv, sizeof(*cmd)); + + return 0; +} + +/** + * vmw_context_scrub_render_target - scrub a render target binding + * from a context. + * + * @bi: single binding information. + * @rebind: Whether to issue a bind instead of scrub command. + */ +static int vmw_context_scrub_render_target(struct vmw_ctx_bindinfo *bi, + bool rebind) +{ + struct vmw_private *dev_priv = bi->ctx->dev_priv; + struct { + SVGA3dCmdHeader header; + SVGA3dCmdSetRenderTarget body; + } *cmd; + + cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); + if (unlikely(cmd == NULL)) { + DRM_ERROR("Failed reserving FIFO space for render target " + "unbinding.\n"); + return -ENOMEM; + } + + cmd->header.id = SVGA_3D_CMD_SETRENDERTARGET; + cmd->header.size = sizeof(cmd->body); + cmd->body.cid = bi->ctx->id; + cmd->body.type = bi->i1.rt_type; + cmd->body.target.sid = ((rebind) ? bi->res->id : SVGA3D_INVALID_ID); + cmd->body.target.face = 0; + cmd->body.target.mipmap = 0; + vmw_fifo_commit(dev_priv, sizeof(*cmd)); + + return 0; +} + +/** + * vmw_context_scrub_texture - scrub a texture binding from a context. + * + * @bi: single binding information. + * @rebind: Whether to issue a bind instead of scrub command. + * + * TODO: Possibly complement this function with a function that takes + * a list of texture bindings and combines them to a single command. + */ +static int vmw_context_scrub_texture(struct vmw_ctx_bindinfo *bi, + bool rebind) +{ + struct vmw_private *dev_priv = bi->ctx->dev_priv; + struct { + SVGA3dCmdHeader header; + struct { + SVGA3dCmdSetTextureState c; + SVGA3dTextureState s1; + } body; + } *cmd; + + cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd)); + if (unlikely(cmd == NULL)) { + DRM_ERROR("Failed reserving FIFO space for texture " + "unbinding.\n"); + return -ENOMEM; + } + + + cmd->header.id = SVGA_3D_CMD_SETTEXTURESTATE; + cmd->header.size = sizeof(cmd->body); + cmd->body.c.cid = bi->ctx->id; + cmd->body.s1.stage = bi->i1.texture_stage; + cmd->body.s1.name = SVGA3D_TS_BIND_TEXTURE; + cmd->body.s1.value = ((rebind) ? bi->res->id : SVGA3D_INVALID_ID); + vmw_fifo_commit(dev_priv, sizeof(*cmd)); + + return 0; +} + +/** + * vmw_context_binding_drop: Stop tracking a context binding + * + * @cb: Pointer to binding tracker storage. + * + * Stops tracking a context binding, and re-initializes its storage. + * Typically used when the context binding is replaced with a binding to + * another (or the same, for that matter) resource. + */ +static void vmw_context_binding_drop(struct vmw_ctx_binding *cb) +{ + list_del(&cb->ctx_list); + if (!list_empty(&cb->res_list)) + list_del(&cb->res_list); + cb->bi.ctx = NULL; +} + +/** + * vmw_context_binding_add: Start tracking a context binding + * + * @cbs: Pointer to the context binding state tracker. + * @bi: Information about the binding to track. + * + * Performs basic checks on the binding to make sure arguments are within + * bounds and then starts tracking the binding in the context binding + * state structure @cbs. + */ +int vmw_context_binding_add(struct vmw_ctx_binding_state *cbs, + const struct vmw_ctx_bindinfo *bi) +{ + struct vmw_ctx_binding *loc; + + switch (bi->bt) { + case vmw_ctx_binding_rt: + if (unlikely((unsigned)bi->i1.rt_type >= SVGA3D_RT_MAX)) { + DRM_ERROR("Illegal render target type %u.\n", + (unsigned) bi->i1.rt_type); + return -EINVAL; + } + loc = &cbs->render_targets[bi->i1.rt_type]; + break; + case vmw_ctx_binding_tex: + if (unlikely((unsigned)bi->i1.texture_stage >= + SVGA3D_NUM_TEXTURE_UNITS)) { + DRM_ERROR("Illegal texture/sampler unit %u.\n", + (unsigned) bi->i1.texture_stage); + return -EINVAL; + } + loc = &cbs->texture_units[bi->i1.texture_stage]; + break; + case vmw_ctx_binding_shader: + if (unlikely((unsigned)bi->i1.shader_type >= + SVGA3D_SHADERTYPE_MAX)) { + DRM_ERROR("Illegal shader type %u.\n", + (unsigned) bi->i1.shader_type); + return -EINVAL; + } + loc = &cbs->shaders[bi->i1.shader_type]; + break; + default: + BUG(); + } + + if (loc->bi.ctx != NULL) + vmw_context_binding_drop(loc); + + loc->bi = *bi; + loc->bi.scrubbed = false; + list_add_tail(&loc->ctx_list, &cbs->list); + INIT_LIST_HEAD(&loc->res_list); + + return 0; +} + +/** + * vmw_context_binding_transfer: Transfer a context binding tracking entry. + * + * @cbs: Pointer to the persistent context binding state tracker. + * @bi: Information about the binding to track. + * + */ +static void vmw_context_binding_transfer(struct vmw_ctx_binding_state *cbs, + const struct vmw_ctx_bindinfo *bi) +{ + struct vmw_ctx_binding *loc; + + switch (bi->bt) { + case vmw_ctx_binding_rt: + loc = &cbs->render_targets[bi->i1.rt_type]; + break; + case vmw_ctx_binding_tex: + loc = &cbs->texture_units[bi->i1.texture_stage]; + break; + case vmw_ctx_binding_shader: + loc = &cbs->shaders[bi->i1.shader_type]; + break; + default: + BUG(); + } + + if (loc->bi.ctx != NULL) + vmw_context_binding_drop(loc); + + if (bi->res != NULL) { + loc->bi = *bi; + list_add_tail(&loc->ctx_list, &cbs->list); + list_add_tail(&loc->res_list, &bi->res->binding_head); + } +} + +/** + * vmw_context_binding_kill - Kill a binding on the device + * and stop tracking it. + * + * @cb: Pointer to binding tracker storage. + * + * Emits FIFO commands to scrub a binding represented by @cb. + * Then stops tracking the binding and re-initializes its storage. + */ +static void vmw_context_binding_kill(struct vmw_ctx_binding *cb) +{ + if (!cb->bi.scrubbed) { + (void) vmw_scrub_funcs[cb->bi.bt](&cb->bi, false); + cb->bi.scrubbed = true; + } + vmw_context_binding_drop(cb); +} + +/** + * vmw_context_binding_state_kill - Kill all bindings associated with a + * struct vmw_ctx_binding state structure, and re-initialize the structure. + * + * @cbs: Pointer to the context binding state tracker. + * + * Emits commands to scrub all bindings associated with the + * context binding state tracker. Then re-initializes the whole structure. + */ +static void vmw_context_binding_state_kill(struct vmw_ctx_binding_state *cbs) +{ + struct vmw_ctx_binding *entry, *next; + + list_for_each_entry_safe(entry, next, &cbs->list, ctx_list) + vmw_context_binding_kill(entry); +} + +/** + * vmw_context_binding_state_scrub - Scrub all bindings associated with a + * struct vmw_ctx_binding state structure. + * + * @cbs: Pointer to the context binding state tracker. + * + * Emits commands to scrub all bindings associated with the + * context binding state tracker. + */ +static void vmw_context_binding_state_scrub(struct vmw_ctx_binding_state *cbs) +{ + struct vmw_ctx_binding *entry; + + list_for_each_entry(entry, &cbs->list, ctx_list) { + if (!entry->bi.scrubbed) { + (void) vmw_scrub_funcs[entry->bi.bt](&entry->bi, false); + entry->bi.scrubbed = true; + } + } +} + +/** + * vmw_context_binding_res_list_kill - Kill all bindings on a + * resource binding list + * + * @head: list head of resource binding list + * + * Kills all bindings associated with a specific resource. Typically + * called before the resource is destroyed. + */ +void vmw_context_binding_res_list_kill(struct list_head *head) +{ + struct vmw_ctx_binding *entry, *next; + + list_for_each_entry_safe(entry, next, head, res_list) + vmw_context_binding_kill(entry); +} + +/** + * vmw_context_binding_res_list_scrub - Scrub all bindings on a + * resource binding list + * + * @head: list head of resource binding list + * + * Scrub all bindings associated with a specific resource. Typically + * called before the resource is evicted. + */ +void vmw_context_binding_res_list_scrub(struct list_head *head) +{ + struct vmw_ctx_binding *entry; + + list_for_each_entry(entry, head, res_list) { + if (!entry->bi.scrubbed) { + (void) vmw_scrub_funcs[entry->bi.bt](&entry->bi, false); + entry->bi.scrubbed = true; + } + } +} + +/** + * vmw_context_binding_state_transfer - Commit staged binding info + * + * @ctx: Pointer to context to commit the staged binding info to. + * @from: Staged binding info built during execbuf. + * + * Transfers binding info from a temporary structure to the persistent + * structure in the context. This can be done once commands + */ +void vmw_context_binding_state_transfer(struct vmw_resource *ctx, + struct vmw_ctx_binding_state *from) +{ + struct vmw_user_context *uctx = + container_of(ctx, struct vmw_user_context, res); + struct vmw_ctx_binding *entry, *next; + + list_for_each_entry_safe(entry, next, &from->list, ctx_list) + vmw_context_binding_transfer(&uctx->cbs, &entry->bi); +} + +/** + * vmw_context_rebind_all - Rebind all scrubbed bindings of a context + * + * @ctx: The context resource + * + * Walks through the context binding list and rebinds all scrubbed + * resources. + */ +int vmw_context_rebind_all(struct vmw_resource *ctx) +{ + struct vmw_ctx_binding *entry; + struct vmw_user_context *uctx = + container_of(ctx, struct vmw_user_context, res); + struct vmw_ctx_binding_state *cbs = &uctx->cbs; + int ret; + + list_for_each_entry(entry, &cbs->list, ctx_list) { + if (likely(!entry->bi.scrubbed)) + continue; + + if (WARN_ON(entry->bi.res == NULL || entry->bi.res->id == + SVGA3D_INVALID_ID)) + continue; + + ret = vmw_scrub_funcs[entry->bi.bt](&entry->bi, true); + if (unlikely(ret != 0)) + return ret; + + entry->bi.scrubbed = false; + } + + return 0; +} + +/** + * vmw_context_binding_list - Return a list of context bindings + * + * @ctx: The context resource + * + * Returns the current list of bindings of the given context. Note that + * this list becomes stale as soon as the dev_priv::binding_mutex is unlocked. + */ +struct list_head *vmw_context_binding_list(struct vmw_resource *ctx) +{ + return &(container_of(ctx, struct vmw_user_context, res)->cbs.list); +} + +struct vmw_cmdbuf_res_manager *vmw_context_res_man(struct vmw_resource *ctx) +{ + return container_of(ctx, struct vmw_user_context, res)->man; +} |