1 files changed, 531 insertions, 0 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_context.c b/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
index 00ae0925aca8..97aa55159107 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
@@ -32,12 +32,28 @@
 struct vmw_user_context {
         struct ttm_base_object base;
         struct vmw_resource res;
+        struct vmw_ctx_binding_state cbs;
 };
 
+
+
+typedef int (*vmw_scrub_func)(struct vmw_ctx_bindinfo *);
+
 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);
+static int vmw_context_scrub_render_target(struct vmw_ctx_bindinfo *bi);
+static int vmw_context_scrub_texture(struct vmw_ctx_bindinfo *bi);
+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 = {
@@ -62,6 +78,23 @@ static const struct vmw_res_func vmw_legacy_context_func = {
         .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:
  */
@@ -76,6 +109,16 @@ static void vmw_hw_context_destroy(struct vmw_resource *res)
         } *cmd;
 
 
+        if (res->func->destroy == vmw_gb_context_destroy) {
+                mutex_lock(&dev_priv->cmdbuf_mutex);
+                (void) vmw_gb_context_destroy(res);
+                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)) {
@@ -92,6 +135,33 @@ static void vmw_hw_context_destroy(struct vmw_resource *res)
         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)) {
+                if (res_free)
+                        res_free(res);
+                else
+                        kfree(res);
+                return ret;
+        }
+
+        memset(&uctx->cbs, 0, sizeof(uctx->cbs));
+        INIT_LIST_HEAD(&uctx->cbs.list);
+
+        vmw_resource_activate(res, vmw_hw_context_destroy);
+        return 0;
+}
+
 static int vmw_context_init(struct vmw_private *dev_priv,
                             struct vmw_resource *res,
                             void (*res_free) (struct vmw_resource *res))
@@ -103,6 +173,9 @@ static int vmw_context_init(struct vmw_private *dev_priv,
                 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);
 
@@ -154,6 +227,184 @@ struct vmw_resource *vmw_context_alloc(struct vmw_private *dev_priv)
         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_kill(&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;
+        struct vmw_user_context *uctx =
+                container_of(res, struct vmw_user_context, res);
+
+        BUG_ON(!list_empty(&uctx->cbs.list));
+
+        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:
  */
@@ -272,3 +523,283 @@ out_unlock:
         return ret;
 
 }
+
+/**
+ * vmw_context_scrub_shader - scrub a shader binding from a context.
+ *
+ * @bi: single binding information.
+ */
+static int vmw_context_scrub_shader(struct vmw_ctx_bindinfo *bi)
+{
+        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 = 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.
+ */
+static int vmw_context_scrub_render_target(struct vmw_ctx_bindinfo *bi)
+{
+        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 = 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.
+ *
+ * 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)
+{
+        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 = (uint32) 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;
+        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);
+
+        loc->bi = *bi;
+        list_add_tail(&loc->ctx_list, &cbs->list);
+        if (bi->res != NULL)
+                list_add_tail(&loc->res_list, &bi->res->binding_head);
+        else
+                INIT_LIST_HEAD(&loc->res_list);
+}
+
+/**
+ * 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.
+ */
+void vmw_context_binding_kill(struct vmw_ctx_binding *cb)
+{
+        (void) vmw_scrub_funcs[cb->bi.bt](&cb->bi);
+        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_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_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);
+}