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path: root/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
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Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_context.c')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_context.c895
1 files changed, 895 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_context.c b/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
new file mode 100644
index 000000000..e0f48cd95
--- /dev/null
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
@@ -0,0 +1,895 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/**************************************************************************
+ *
+ * Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
+ *
+ * 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 <drm/ttm/ttm_placement.h>
+
+#include "vmwgfx_drv.h"
+#include "vmwgfx_resource_priv.h"
+#include "vmwgfx_binding.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;
+ struct vmw_resource *cotables[SVGA_COTABLE_MAX];
+ spinlock_t cotable_lock;
+ struct vmw_buffer_object *dx_query_mob;
+};
+
+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_dx_context_create(struct vmw_resource *res);
+static int vmw_dx_context_bind(struct vmw_resource *res,
+ struct ttm_validate_buffer *val_buf);
+static int vmw_dx_context_unbind(struct vmw_resource *res,
+ bool readback,
+ struct ttm_validate_buffer *val_buf);
+static int vmw_dx_context_destroy(struct vmw_resource *res);
+
+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,
+ .prio = 3,
+ .dirty_prio = 3,
+ .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 struct vmw_res_func vmw_dx_context_func = {
+ .res_type = vmw_res_dx_context,
+ .needs_backup = true,
+ .may_evict = true,
+ .prio = 3,
+ .dirty_prio = 3,
+ .type_name = "dx contexts",
+ .backup_placement = &vmw_mob_placement,
+ .create = vmw_dx_context_create,
+ .destroy = vmw_dx_context_destroy,
+ .bind = vmw_dx_context_bind,
+ .unbind = vmw_dx_context_unbind
+};
+
+/*
+ * Context management:
+ */
+
+static void vmw_context_cotables_unref(struct vmw_private *dev_priv,
+ struct vmw_user_context *uctx)
+{
+ struct vmw_resource *res;
+ int i;
+ u32 cotable_max = has_sm5_context(dev_priv) ?
+ SVGA_COTABLE_MAX : SVGA_COTABLE_DX10_MAX;
+
+ for (i = 0; i < cotable_max; ++i) {
+ spin_lock(&uctx->cotable_lock);
+ res = uctx->cotables[i];
+ uctx->cotables[i] = NULL;
+ spin_unlock(&uctx->cotable_lock);
+
+ if (res)
+ vmw_resource_unreference(&res);
+ }
+}
+
+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 ||
+ res->func->destroy == vmw_dx_context_destroy) {
+ mutex_lock(&dev_priv->cmdbuf_mutex);
+ vmw_cmdbuf_res_man_destroy(uctx->man);
+ mutex_lock(&dev_priv->binding_mutex);
+ vmw_binding_state_kill(uctx->cbs);
+ (void) res->func->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);
+ vmw_context_cotables_unref(dev_priv, uctx);
+ return;
+ }
+
+ vmw_execbuf_release_pinned_bo(dev_priv);
+ cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
+ if (unlikely(cmd == NULL))
+ return;
+
+ cmd->header.id = SVGA_3D_CMD_CONTEXT_DESTROY;
+ cmd->header.size = sizeof(cmd->body);
+ cmd->body.cid = res->id;
+
+ vmw_cmd_commit(dev_priv, sizeof(*cmd));
+ vmw_fifo_resource_dec(dev_priv);
+}
+
+static int vmw_gb_context_init(struct vmw_private *dev_priv,
+ bool dx,
+ struct vmw_resource *res,
+ void (*res_free)(struct vmw_resource *res))
+{
+ int ret, i;
+ struct vmw_user_context *uctx =
+ container_of(res, struct vmw_user_context, res);
+
+ res->backup_size = (dx ? sizeof(SVGADXContextMobFormat) :
+ sizeof(SVGAGBContextData));
+ ret = vmw_resource_init(dev_priv, res, true,
+ res_free,
+ dx ? &vmw_dx_context_func :
+ &vmw_gb_context_func);
+ if (unlikely(ret != 0))
+ goto out_err;
+
+ if (dev_priv->has_mob) {
+ uctx->man = vmw_cmdbuf_res_man_create(dev_priv);
+ if (IS_ERR(uctx->man)) {
+ ret = PTR_ERR(uctx->man);
+ uctx->man = NULL;
+ goto out_err;
+ }
+ }
+
+ uctx->cbs = vmw_binding_state_alloc(dev_priv);
+ if (IS_ERR(uctx->cbs)) {
+ ret = PTR_ERR(uctx->cbs);
+ goto out_err;
+ }
+
+ spin_lock_init(&uctx->cotable_lock);
+
+ if (dx) {
+ u32 cotable_max = has_sm5_context(dev_priv) ?
+ SVGA_COTABLE_MAX : SVGA_COTABLE_DX10_MAX;
+ for (i = 0; i < cotable_max; ++i) {
+ uctx->cotables[i] = vmw_cotable_alloc(dev_priv,
+ &uctx->res, i);
+ if (IS_ERR(uctx->cotables[i])) {
+ ret = PTR_ERR(uctx->cotables[i]);
+ goto out_cotables;
+ }
+ }
+ }
+
+ res->hw_destroy = vmw_hw_context_destroy;
+ return 0;
+
+out_cotables:
+ vmw_context_cotables_unref(dev_priv, uctx);
+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),
+ bool dx)
+{
+ int ret;
+
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdDefineContext body;
+ } *cmd;
+
+ if (dev_priv->has_mob)
+ return vmw_gb_context_init(dev_priv, dx, 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_HB_MAX_CONTEXT_IDS)) {
+ DRM_ERROR("Out of hw context ids.\n");
+ vmw_resource_unreference(&res);
+ return -ENOMEM;
+ }
+
+ cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
+ if (unlikely(cmd == NULL)) {
+ vmw_resource_unreference(&res);
+ return -ENOMEM;
+ }
+
+ cmd->header.id = SVGA_3D_CMD_CONTEXT_DEFINE;
+ cmd->header.size = sizeof(cmd->body);
+ cmd->body.cid = res->id;
+
+ vmw_cmd_commit(dev_priv, sizeof(*cmd));
+ vmw_fifo_resource_inc(dev_priv);
+ res->hw_destroy = vmw_hw_context_destroy;
+ return 0;
+
+out_early:
+ if (res_free == NULL)
+ kfree(res);
+ else
+ res_free(res);
+ return ret;
+}
+
+
+/*
+ * GB context.
+ */
+
+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_CMD_RESERVE(dev_priv, sizeof(*cmd));
+ if (unlikely(cmd == NULL)) {
+ 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_cmd_commit(dev_priv, sizeof(*cmd));
+ vmw_fifo_resource_inc(dev_priv);
+
+ 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->resource->mem_type != VMW_PL_MOB);
+
+ cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
+ if (unlikely(cmd == NULL))
+ 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->resource->start;
+ cmd->body.validContents = res->backup_dirty;
+ res->backup_dirty = false;
+ vmw_cmd_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->resource->mem_type != VMW_PL_MOB);
+
+ mutex_lock(&dev_priv->binding_mutex);
+ vmw_binding_state_scrub(uctx->cbs);
+
+ submit_size = sizeof(*cmd2) + (readback ? sizeof(*cmd1) : 0);
+
+ cmd = VMW_CMD_RESERVE(dev_priv, submit_size);
+ if (unlikely(cmd == NULL)) {
+ 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_cmd_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_bo_fence_single(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_CMD_RESERVE(dev_priv, sizeof(*cmd));
+ if (unlikely(cmd == NULL))
+ return -ENOMEM;
+
+ cmd->header.id = SVGA_3D_CMD_DESTROY_GB_CONTEXT;
+ cmd->header.size = sizeof(cmd->body);
+ cmd->body.cid = res->id;
+ vmw_cmd_commit(dev_priv, sizeof(*cmd));
+ if (dev_priv->query_cid == res->id)
+ dev_priv->query_cid_valid = false;
+ vmw_resource_release_id(res);
+ vmw_fifo_resource_dec(dev_priv);
+
+ return 0;
+}
+
+/*
+ * DX context.
+ */
+
+static int vmw_dx_context_create(struct vmw_resource *res)
+{
+ struct vmw_private *dev_priv = res->dev_priv;
+ int ret;
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdDXDefineContext 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_DXCONTEXT)) {
+ ret = -EBUSY;
+ goto out_no_fifo;
+ }
+
+ cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
+ if (unlikely(cmd == NULL)) {
+ ret = -ENOMEM;
+ goto out_no_fifo;
+ }
+
+ cmd->header.id = SVGA_3D_CMD_DX_DEFINE_CONTEXT;
+ cmd->header.size = sizeof(cmd->body);
+ cmd->body.cid = res->id;
+ vmw_cmd_commit(dev_priv, sizeof(*cmd));
+ vmw_fifo_resource_inc(dev_priv);
+
+ return 0;
+
+out_no_fifo:
+ vmw_resource_release_id(res);
+out_no_id:
+ return ret;
+}
+
+static int vmw_dx_context_bind(struct vmw_resource *res,
+ struct ttm_validate_buffer *val_buf)
+{
+ struct vmw_private *dev_priv = res->dev_priv;
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdDXBindContext body;
+ } *cmd;
+ struct ttm_buffer_object *bo = val_buf->bo;
+
+ BUG_ON(bo->resource->mem_type != VMW_PL_MOB);
+
+ cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
+ if (unlikely(cmd == NULL))
+ return -ENOMEM;
+
+ cmd->header.id = SVGA_3D_CMD_DX_BIND_CONTEXT;
+ cmd->header.size = sizeof(cmd->body);
+ cmd->body.cid = res->id;
+ cmd->body.mobid = bo->resource->start;
+ cmd->body.validContents = res->backup_dirty;
+ res->backup_dirty = false;
+ vmw_cmd_commit(dev_priv, sizeof(*cmd));
+
+
+ return 0;
+}
+
+/**
+ * vmw_dx_context_scrub_cotables - Scrub all bindings and
+ * cotables from a context
+ *
+ * @ctx: Pointer to the context resource
+ * @readback: Whether to save the otable contents on scrubbing.
+ *
+ * COtables must be unbound before their context, but unbinding requires
+ * the backup buffer being reserved, whereas scrubbing does not.
+ * This function scrubs all cotables of a context, potentially reading back
+ * the contents into their backup buffers. However, scrubbing cotables
+ * also makes the device context invalid, so scrub all bindings first so
+ * that doesn't have to be done later with an invalid context.
+ */
+void vmw_dx_context_scrub_cotables(struct vmw_resource *ctx,
+ bool readback)
+{
+ struct vmw_user_context *uctx =
+ container_of(ctx, struct vmw_user_context, res);
+ u32 cotable_max = has_sm5_context(ctx->dev_priv) ?
+ SVGA_COTABLE_MAX : SVGA_COTABLE_DX10_MAX;
+ int i;
+
+ vmw_binding_state_scrub(uctx->cbs);
+ for (i = 0; i < cotable_max; ++i) {
+ struct vmw_resource *res;
+
+ /* Avoid racing with ongoing cotable destruction. */
+ spin_lock(&uctx->cotable_lock);
+ res = uctx->cotables[vmw_cotable_scrub_order[i]];
+ if (res)
+ res = vmw_resource_reference_unless_doomed(res);
+ spin_unlock(&uctx->cotable_lock);
+ if (!res)
+ continue;
+
+ WARN_ON(vmw_cotable_scrub(res, readback));
+ vmw_resource_unreference(&res);
+ }
+}
+
+static int vmw_dx_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;
+ SVGA3dCmdDXReadbackContext body;
+ } *cmd1;
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdDXBindContext body;
+ } *cmd2;
+ uint32_t submit_size;
+ uint8_t *cmd;
+
+
+ BUG_ON(bo->resource->mem_type != VMW_PL_MOB);
+
+ mutex_lock(&dev_priv->binding_mutex);
+ vmw_dx_context_scrub_cotables(res, readback);
+
+ if (uctx->dx_query_mob && uctx->dx_query_mob->dx_query_ctx &&
+ readback) {
+ WARN_ON(uctx->dx_query_mob->dx_query_ctx != res);
+ if (vmw_query_readback_all(uctx->dx_query_mob))
+ DRM_ERROR("Failed to read back query states\n");
+ }
+
+ submit_size = sizeof(*cmd2) + (readback ? sizeof(*cmd1) : 0);
+
+ cmd = VMW_CMD_RESERVE(dev_priv, submit_size);
+ if (unlikely(cmd == NULL)) {
+ mutex_unlock(&dev_priv->binding_mutex);
+ return -ENOMEM;
+ }
+
+ cmd2 = (void *) cmd;
+ if (readback) {
+ cmd1 = (void *) cmd;
+ cmd1->header.id = SVGA_3D_CMD_DX_READBACK_CONTEXT;
+ cmd1->header.size = sizeof(cmd1->body);
+ cmd1->body.cid = res->id;
+ cmd2 = (void *) (&cmd1[1]);
+ }
+ cmd2->header.id = SVGA_3D_CMD_DX_BIND_CONTEXT;
+ cmd2->header.size = sizeof(cmd2->body);
+ cmd2->body.cid = res->id;
+ cmd2->body.mobid = SVGA3D_INVALID_ID;
+
+ vmw_cmd_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_bo_fence_single(bo, fence);
+
+ if (likely(fence != NULL))
+ vmw_fence_obj_unreference(&fence);
+
+ return 0;
+}
+
+static int vmw_dx_context_destroy(struct vmw_resource *res)
+{
+ struct vmw_private *dev_priv = res->dev_priv;
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdDXDestroyContext body;
+ } *cmd;
+
+ if (likely(res->id == -1))
+ return 0;
+
+ cmd = VMW_CMD_RESERVE(dev_priv, sizeof(*cmd));
+ if (unlikely(cmd == NULL))
+ return -ENOMEM;
+
+ cmd->header.id = SVGA_3D_CMD_DX_DESTROY_CONTEXT;
+ cmd->header.size = sizeof(cmd->body);
+ cmd->body.cid = res->id;
+ vmw_cmd_commit(dev_priv, sizeof(*cmd));
+ if (dev_priv->query_cid == res->id)
+ dev_priv->query_cid_valid = false;
+ vmw_resource_release_id(res);
+ vmw_fifo_resource_dec(dev_priv);
+
+ 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);
+
+ if (ctx->cbs)
+ vmw_binding_state_free(ctx->cbs);
+
+ (void) vmw_context_bind_dx_query(res, NULL);
+
+ ttm_base_object_kfree(ctx, base);
+}
+
+/*
+ * 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);
+}
+
+static int vmw_context_define(struct drm_device *dev, void *data,
+ struct drm_file *file_priv, bool dx)
+{
+ 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;
+
+ if (!has_sm4_context(dev_priv) && dx) {
+ VMW_DEBUG_USER("DX contexts not supported by device.\n");
+ return -EINVAL;
+ }
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (unlikely(!ctx)) {
+ ret = -ENOMEM;
+ goto out_ret;
+ }
+
+ 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, dx);
+ if (unlikely(ret != 0))
+ goto out_ret;
+
+ tmp = vmw_resource_reference(&ctx->res);
+ ret = ttm_base_object_init(tfile, &ctx->base, false, VMW_RES_CONTEXT,
+ &vmw_user_context_base_release);
+
+ if (unlikely(ret != 0)) {
+ vmw_resource_unreference(&tmp);
+ goto out_err;
+ }
+
+ arg->cid = ctx->base.handle;
+out_err:
+ vmw_resource_unreference(&res);
+out_ret:
+ return ret;
+}
+
+int vmw_context_define_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ return vmw_context_define(dev, data, file_priv, false);
+}
+
+int vmw_extended_context_define_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ union drm_vmw_extended_context_arg *arg = (typeof(arg)) data;
+ struct drm_vmw_context_arg *rep = &arg->rep;
+
+ switch (arg->req) {
+ case drm_vmw_context_legacy:
+ return vmw_context_define(dev, rep, file_priv, false);
+ case drm_vmw_context_dx:
+ return vmw_context_define(dev, rep, file_priv, true);
+ default:
+ break;
+ }
+ return -EINVAL;
+}
+
+/**
+ * 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)
+{
+ struct vmw_user_context *uctx =
+ container_of(ctx, struct vmw_user_context, res);
+
+ return vmw_binding_state_list(uctx->cbs);
+}
+
+struct vmw_cmdbuf_res_manager *vmw_context_res_man(struct vmw_resource *ctx)
+{
+ return container_of(ctx, struct vmw_user_context, res)->man;
+}
+
+struct vmw_resource *vmw_context_cotable(struct vmw_resource *ctx,
+ SVGACOTableType cotable_type)
+{
+ u32 cotable_max = has_sm5_context(ctx->dev_priv) ?
+ SVGA_COTABLE_MAX : SVGA_COTABLE_DX10_MAX;
+
+ if (cotable_type >= cotable_max)
+ return ERR_PTR(-EINVAL);
+
+ return container_of(ctx, struct vmw_user_context, res)->
+ cotables[cotable_type];
+}
+
+/**
+ * vmw_context_binding_state -
+ * Return a pointer to a context binding state structure
+ *
+ * @ctx: The context resource
+ *
+ * Returns the current state of bindings of the given context. Note that
+ * this state becomes stale as soon as the dev_priv::binding_mutex is unlocked.
+ */
+struct vmw_ctx_binding_state *
+vmw_context_binding_state(struct vmw_resource *ctx)
+{
+ return container_of(ctx, struct vmw_user_context, res)->cbs;
+}
+
+/**
+ * vmw_context_bind_dx_query -
+ * Sets query MOB for the context. If @mob is NULL, then this function will
+ * remove the association between the MOB and the context. This function
+ * assumes the binding_mutex is held.
+ *
+ * @ctx_res: The context resource
+ * @mob: a reference to the query MOB
+ *
+ * Returns -EINVAL if a MOB has already been set and does not match the one
+ * specified in the parameter. 0 otherwise.
+ */
+int vmw_context_bind_dx_query(struct vmw_resource *ctx_res,
+ struct vmw_buffer_object *mob)
+{
+ struct vmw_user_context *uctx =
+ container_of(ctx_res, struct vmw_user_context, res);
+
+ if (mob == NULL) {
+ if (uctx->dx_query_mob) {
+ uctx->dx_query_mob->dx_query_ctx = NULL;
+ vmw_bo_unreference(&uctx->dx_query_mob);
+ uctx->dx_query_mob = NULL;
+ }
+
+ return 0;
+ }
+
+ /* Can only have one MOB per context for queries */
+ if (uctx->dx_query_mob && uctx->dx_query_mob != mob)
+ return -EINVAL;
+
+ mob->dx_query_ctx = ctx_res;
+
+ if (!uctx->dx_query_mob)
+ uctx->dx_query_mob = vmw_bo_reference(mob);
+
+ return 0;
+}
+
+/**
+ * vmw_context_get_dx_query_mob - Returns non-counted reference to DX query mob
+ *
+ * @ctx_res: The context resource
+ */
+struct vmw_buffer_object *
+vmw_context_get_dx_query_mob(struct vmw_resource *ctx_res)
+{
+ struct vmw_user_context *uctx =
+ container_of(ctx_res, struct vmw_user_context, res);
+
+ return uctx->dx_query_mob;
+}