--- /dev/null
+/**************************************************************************
+ *
+ * Copyright © 2014-2015 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.
+ *
+ **************************************************************************/
+/*
+ * Treat context OTables as resources to make use of the resource
+ * backing MOB eviction mechanism, that is used to read back the COTable
+ * whenever the backing MOB is evicted.
+ */
+
+#include "vmwgfx_drv.h"
+#include "vmwgfx_resource_priv.h"
+#include <ttm/ttm_placement.h>
+#include "vmwgfx_so.h"
+
+/**
+ * struct vmw_cotable - Context Object Table resource
+ *
+ * @res: struct vmw_resource we are deriving from.
+ * @ctx: non-refcounted pointer to the owning context.
+ * @size_read_back: Size of data read back during eviction.
+ * @seen_entries: Seen entries in command stream for this cotable.
+ * @type: The cotable type.
+ * @scrubbed: Whether the cotable has been scrubbed.
+ * @resource_list: List of resources in the cotable.
+ */
+struct vmw_cotable {
+ struct vmw_resource res;
+ struct vmw_resource *ctx;
+ size_t size_read_back;
+ int seen_entries;
+ u32 type;
+ bool scrubbed;
+ struct list_head resource_list;
+};
+
+/**
+ * struct vmw_cotable_info - Static info about cotable types
+ *
+ * @min_initial_entries: Min number of initial intries at cotable allocation
+ * for this cotable type.
+ * @size: Size of each entry.
+ */
+struct vmw_cotable_info {
+ u32 min_initial_entries;
+ u32 size;
+ void (*unbind_func)(struct vmw_private *, struct list_head *,
+ bool);
+};
+
+static const struct vmw_cotable_info co_info[] = {
+ {1, sizeof(SVGACOTableDXRTViewEntry), &vmw_view_cotable_list_destroy},
+ {1, sizeof(SVGACOTableDXDSViewEntry), &vmw_view_cotable_list_destroy},
+ {1, sizeof(SVGACOTableDXSRViewEntry), &vmw_view_cotable_list_destroy},
+ {1, sizeof(SVGACOTableDXElementLayoutEntry), NULL},
+ {1, sizeof(SVGACOTableDXBlendStateEntry), NULL},
+ {1, sizeof(SVGACOTableDXDepthStencilEntry), NULL},
+ {1, sizeof(SVGACOTableDXRasterizerStateEntry), NULL},
+ {1, sizeof(SVGACOTableDXSamplerEntry), NULL},
+ {1, sizeof(SVGACOTableDXStreamOutputEntry), NULL},
+ {1, sizeof(SVGACOTableDXQueryEntry), NULL},
+ {1, sizeof(SVGACOTableDXShaderEntry), &vmw_dx_shader_cotable_list_scrub}
+};
+
+/*
+ * Cotables with bindings that we remove must be scrubbed first,
+ * otherwise, the device will swap in an invalid context when we remove
+ * bindings before scrubbing a cotable...
+ */
+const SVGACOTableType vmw_cotable_scrub_order[] = {
+ SVGA_COTABLE_RTVIEW,
+ SVGA_COTABLE_DSVIEW,
+ SVGA_COTABLE_SRVIEW,
+ SVGA_COTABLE_DXSHADER,
+ SVGA_COTABLE_ELEMENTLAYOUT,
+ SVGA_COTABLE_BLENDSTATE,
+ SVGA_COTABLE_DEPTHSTENCIL,
+ SVGA_COTABLE_RASTERIZERSTATE,
+ SVGA_COTABLE_SAMPLER,
+ SVGA_COTABLE_STREAMOUTPUT,
+ SVGA_COTABLE_DXQUERY,
+};
+
+static int vmw_cotable_bind(struct vmw_resource *res,
+ struct ttm_validate_buffer *val_buf);
+static int vmw_cotable_unbind(struct vmw_resource *res,
+ bool readback,
+ struct ttm_validate_buffer *val_buf);
+static int vmw_cotable_create(struct vmw_resource *res);
+static int vmw_cotable_destroy(struct vmw_resource *res);
+
+static const struct vmw_res_func vmw_cotable_func = {
+ .res_type = vmw_res_cotable,
+ .needs_backup = true,
+ .may_evict = true,
+ .type_name = "context guest backed object tables",
+ .backup_placement = &vmw_mob_placement,
+ .create = vmw_cotable_create,
+ .destroy = vmw_cotable_destroy,
+ .bind = vmw_cotable_bind,
+ .unbind = vmw_cotable_unbind,
+};
+
+/**
+ * vmw_cotable - Convert a struct vmw_resource pointer to a struct
+ * vmw_cotable pointer
+ *
+ * @res: Pointer to the resource.
+ */
+static struct vmw_cotable *vmw_cotable(struct vmw_resource *res)
+{
+ return container_of(res, struct vmw_cotable, res);
+}
+
+/**
+ * vmw_cotable_destroy - Cotable resource destroy callback
+ *
+ * @res: Pointer to the cotable resource.
+ *
+ * There is no device cotable destroy command, so this function only
+ * makes sure that the resource id is set to invalid.
+ */
+static int vmw_cotable_destroy(struct vmw_resource *res)
+{
+ res->id = -1;
+ return 0;
+}
+
+/**
+ * vmw_cotable_unscrub - Undo a cotable unscrub operation
+ *
+ * @res: Pointer to the cotable resource
+ *
+ * This function issues commands to (re)bind the cotable to
+ * its backing mob, which needs to be validated and reserved at this point.
+ * This is identical to bind() except the function interface looks different.
+ */
+static int vmw_cotable_unscrub(struct vmw_resource *res)
+{
+ struct vmw_cotable *vcotbl = vmw_cotable(res);
+ struct vmw_private *dev_priv = res->dev_priv;
+ struct ttm_buffer_object *bo = &res->backup->base;
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdDXSetCOTable body;
+ } *cmd;
+
+ WARN_ON_ONCE(bo->mem.mem_type != VMW_PL_MOB);
+ lockdep_assert_held(&bo->resv->lock.base);
+
+ cmd = vmw_fifo_reserve_dx(dev_priv, sizeof(*cmd), SVGA3D_INVALID_ID);
+ if (!cmd) {
+ DRM_ERROR("Failed reserving FIFO space for cotable "
+ "binding.\n");
+ return -ENOMEM;
+ }
+
+ WARN_ON(vcotbl->ctx->id == SVGA3D_INVALID_ID);
+ WARN_ON(bo->mem.mem_type != VMW_PL_MOB);
+ cmd->header.id = SVGA_3D_CMD_DX_SET_COTABLE;
+ cmd->header.size = sizeof(cmd->body);
+ cmd->body.cid = vcotbl->ctx->id;
+ cmd->body.type = vcotbl->type;
+ cmd->body.mobid = bo->mem.start;
+ cmd->body.validSizeInBytes = vcotbl->size_read_back;
+
+ vmw_fifo_commit_flush(dev_priv, sizeof(*cmd));
+ vcotbl->scrubbed = false;
+
+ return 0;
+}
+
+/**
+ * vmw_cotable_bind - Undo a cotable unscrub operation
+ *
+ * @res: Pointer to the cotable resource
+ * @val_buf: Pointer to a struct ttm_validate_buffer prepared by the caller
+ * for convenience / fencing.
+ *
+ * This function issues commands to (re)bind the cotable to
+ * its backing mob, which needs to be validated and reserved at this point.
+ */
+static int vmw_cotable_bind(struct vmw_resource *res,
+ struct ttm_validate_buffer *val_buf)
+{
+ /*
+ * The create() callback may have changed @res->backup without
+ * the caller noticing, and with val_buf->bo still pointing to
+ * the old backup buffer. Although hackish, and not used currently,
+ * take the opportunity to correct the value here so that it's not
+ * misused in the future.
+ */
+ val_buf->bo = &res->backup->base;
+
+ return vmw_cotable_unscrub(res);
+}
+
+/**
+ * vmw_cotable_scrub - Scrub the cotable from the device.
+ *
+ * @res: Pointer to the cotable resource.
+ * @readback: Whether initiate a readback of the cotable data to the backup
+ * buffer.
+ *
+ * In some situations (context swapouts) it might be desirable to make the
+ * device forget about the cotable without performing a full unbind. A full
+ * unbind requires reserved backup buffers and it might not be possible to
+ * reserve them due to locking order violation issues. The vmw_cotable_scrub
+ * function implements a partial unbind() without that requirement but with the
+ * following restrictions.
+ * 1) Before the cotable is again used by the GPU, vmw_cotable_unscrub() must
+ * be called.
+ * 2) Before the cotable backing buffer is used by the CPU, or during the
+ * resource destruction, vmw_cotable_unbind() must be called.
+ */
+int vmw_cotable_scrub(struct vmw_resource *res, bool readback)
+{
+ struct vmw_cotable *vcotbl = vmw_cotable(res);
+ struct vmw_private *dev_priv = res->dev_priv;
+ size_t submit_size;
+
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdDXReadbackCOTable body;
+ } *cmd0;
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdDXSetCOTable body;
+ } *cmd1;
+
+ if (vcotbl->scrubbed)
+ return 0;
+
+ if (co_info[vcotbl->type].unbind_func)
+ co_info[vcotbl->type].unbind_func(dev_priv,
+ &vcotbl->resource_list,
+ readback);
+ submit_size = sizeof(*cmd1);
+ if (readback)
+ submit_size += sizeof(*cmd0);
+
+ cmd1 = vmw_fifo_reserve_dx(dev_priv, submit_size, SVGA3D_INVALID_ID);
+ if (!cmd1) {
+ DRM_ERROR("Failed reserving FIFO space for cotable "
+ "unbinding.\n");
+ return -ENOMEM;
+ }
+
+ vcotbl->size_read_back = 0;
+ if (readback) {
+ cmd0 = (void *) cmd1;
+ cmd0->header.id = SVGA_3D_CMD_DX_READBACK_COTABLE;
+ cmd0->header.size = sizeof(cmd0->body);
+ cmd0->body.cid = vcotbl->ctx->id;
+ cmd0->body.type = vcotbl->type;
+ cmd1 = (void *) &cmd0[1];
+ vcotbl->size_read_back = res->backup_size;
+ }
+ cmd1->header.id = SVGA_3D_CMD_DX_SET_COTABLE;
+ cmd1->header.size = sizeof(cmd1->body);
+ cmd1->body.cid = vcotbl->ctx->id;
+ cmd1->body.type = vcotbl->type;
+ cmd1->body.mobid = SVGA3D_INVALID_ID;
+ cmd1->body.validSizeInBytes = 0;
+ vmw_fifo_commit_flush(dev_priv, submit_size);
+ vcotbl->scrubbed = true;
+
+ /* Trigger a create() on next validate. */
+ res->id = -1;
+
+ return 0;
+}
+
+/**
+ * vmw_cotable_unbind - Cotable resource unbind callback
+ *
+ * @res: Pointer to the cotable resource.
+ * @readback: Whether to read back cotable data to the backup buffer.
+ * val_buf: Pointer to a struct ttm_validate_buffer prepared by the caller
+ * for convenience / fencing.
+ *
+ * Unbinds the cotable from the device and fences the backup buffer.
+ */
+static int vmw_cotable_unbind(struct vmw_resource *res,
+ bool readback,
+ struct ttm_validate_buffer *val_buf)
+{
+ struct vmw_cotable *vcotbl = vmw_cotable(res);
+ struct vmw_private *dev_priv = res->dev_priv;
+ struct ttm_buffer_object *bo = val_buf->bo;
+ struct vmw_fence_obj *fence;
+
+ if (list_empty(&res->mob_head))
+ return 0;
+
+ WARN_ON_ONCE(bo->mem.mem_type != VMW_PL_MOB);
+ lockdep_assert_held(&bo->resv->lock.base);
+
+ mutex_lock(&dev_priv->binding_mutex);
+ if (!vcotbl->scrubbed)
+ vmw_dx_context_scrub_cotables(vcotbl->ctx, readback);
+ mutex_unlock(&dev_priv->binding_mutex);
+ (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;
+}
+
+/**
+ * vmw_cotable_readback - Read back a cotable without unbinding.
+ *
+ * @res: The cotable resource.
+ *
+ * Reads back a cotable to its backing mob without scrubbing the MOB from
+ * the cotable. The MOB is fenced for subsequent CPU access.
+ */
+static int vmw_cotable_readback(struct vmw_resource *res)
+{
+ struct vmw_cotable *vcotbl = vmw_cotable(res);
+ struct vmw_private *dev_priv = res->dev_priv;
+
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdDXReadbackCOTable body;
+ } *cmd;
+ struct vmw_fence_obj *fence;
+
+ if (!vcotbl->scrubbed) {
+ cmd = vmw_fifo_reserve_dx(dev_priv, sizeof(*cmd),
+ SVGA3D_INVALID_ID);
+ if (!cmd) {
+ DRM_ERROR("Failed reserving FIFO space for cotable "
+ "readback.\n");
+ return -ENOMEM;
+ }
+ cmd->header.id = SVGA_3D_CMD_DX_READBACK_COTABLE;
+ cmd->header.size = sizeof(cmd->body);
+ cmd->body.cid = vcotbl->ctx->id;
+ cmd->body.type = vcotbl->type;
+ vcotbl->size_read_back = res->backup_size;
+ vmw_fifo_commit(dev_priv, sizeof(*cmd));
+ }
+
+ (void) vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
+ vmw_fence_single_bo(&res->backup->base, fence);
+ vmw_fence_obj_unreference(&fence);
+
+ return 0;
+}
+
+/**
+ * vmw_cotable_resize - Resize a cotable.
+ *
+ * @res: The cotable resource.
+ * @new_size: The new size.
+ *
+ * Resizes a cotable and binds the new backup buffer.
+ * On failure the cotable is left intact.
+ * Important! This function may not fail once the MOB switch has been
+ * committed to hardware. That would put the device context in an
+ * invalid state which we can't currently recover from.
+ */
+static int vmw_cotable_resize(struct vmw_resource *res, size_t new_size)
+{
+ struct vmw_private *dev_priv = res->dev_priv;
+ struct vmw_cotable *vcotbl = vmw_cotable(res);
+ struct vmw_dma_buffer *buf, *old_buf = res->backup;
+ struct ttm_buffer_object *bo, *old_bo = &res->backup->base;
+ size_t old_size = res->backup_size;
+ size_t old_size_read_back = vcotbl->size_read_back;
+ size_t cur_size_read_back;
+ struct ttm_bo_kmap_obj old_map, new_map;
+ int ret;
+ size_t i;
+
+ ret = vmw_cotable_readback(res);
+ if (ret)
+ return ret;
+
+ cur_size_read_back = vcotbl->size_read_back;
+ vcotbl->size_read_back = old_size_read_back;
+
+ /*
+ * While device is processing, Allocate and reserve a buffer object
+ * for the new COTable. Initially pin the buffer object to make sure
+ * we can use tryreserve without failure.
+ */
+ buf = kzalloc(sizeof(*buf), GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ ret = vmw_dmabuf_init(dev_priv, buf, new_size, &vmw_mob_ne_placement,
+ true, vmw_dmabuf_bo_free);
+ if (ret) {
+ DRM_ERROR("Failed initializing new cotable MOB.\n");
+ return ret;
+ }
+
+ bo = &buf->base;
+ WARN_ON_ONCE(ttm_bo_reserve(bo, false, true, false, NULL));
+
+ ret = ttm_bo_wait(old_bo, false, false, false);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Failed waiting for cotable unbind.\n");
+ goto out_wait;
+ }
+
+ /*
+ * Do a page by page copy of COTables. This eliminates slow vmap()s.
+ * This should really be a TTM utility.
+ */
+ for (i = 0; i < old_bo->num_pages; ++i) {
+ bool dummy;
+
+ ret = ttm_bo_kmap(old_bo, i, 1, &old_map);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Failed mapping old COTable on resize.\n");
+ goto out_wait;
+ }
+ ret = ttm_bo_kmap(bo, i, 1, &new_map);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Failed mapping new COTable on resize.\n");
+ goto out_map_new;
+ }
+ memcpy(ttm_kmap_obj_virtual(&new_map, &dummy),
+ ttm_kmap_obj_virtual(&old_map, &dummy),
+ PAGE_SIZE);
+ ttm_bo_kunmap(&new_map);
+ ttm_bo_kunmap(&old_map);
+ }
+
+ /* Unpin new buffer, and switch backup buffers. */
+ ret = ttm_bo_validate(bo, &vmw_mob_placement, false, false);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Failed validating new COTable backup buffer.\n");
+ goto out_wait;
+ }
+
+ res->backup = buf;
+ res->backup_size = new_size;
+ vcotbl->size_read_back = cur_size_read_back;
+
+ /*
+ * Now tell the device to switch. If this fails, then we need to
+ * revert the full resize.
+ */
+ ret = vmw_cotable_unscrub(res);
+ if (ret) {
+ DRM_ERROR("Failed switching COTable backup buffer.\n");
+ res->backup = old_buf;
+ res->backup_size = old_size;
+ vcotbl->size_read_back = old_size_read_back;
+ goto out_wait;
+ }
+
+ /* Let go of the old mob. */
+ list_del(&res->mob_head);
+ list_add_tail(&res->mob_head, &buf->res_list);
+ vmw_dmabuf_unreference(&old_buf);
+ res->id = vcotbl->type;
+
+ return 0;
+
+out_map_new:
+ ttm_bo_kunmap(&old_map);
+out_wait:
+ ttm_bo_unreserve(bo);
+ vmw_dmabuf_unreference(&buf);
+
+ return ret;
+}
+
+/**
+ * vmw_cotable_create - Cotable resource create callback
+ *
+ * @res: Pointer to a cotable resource.
+ *
+ * There is no separate create command for cotables, so this callback, which
+ * is called before bind() in the validation sequence is instead used for two
+ * things.
+ * 1) Unscrub the cotable if it is scrubbed and still attached to a backup
+ * buffer, that is, if @res->mob_head is non-empty.
+ * 2) Resize the cotable if needed.
+ */
+static int vmw_cotable_create(struct vmw_resource *res)
+{
+ struct vmw_cotable *vcotbl = vmw_cotable(res);
+ size_t new_size = res->backup_size;
+ size_t needed_size;
+ int ret;
+
+ /* Check whether we need to resize the cotable */
+ needed_size = (vcotbl->seen_entries + 1) * co_info[vcotbl->type].size;
+ while (needed_size > new_size)
+ new_size *= 2;
+
+ if (likely(new_size <= res->backup_size)) {
+ if (vcotbl->scrubbed && !list_empty(&res->mob_head)) {
+ ret = vmw_cotable_unscrub(res);
+ if (ret)
+ return ret;
+ }
+ res->id = vcotbl->type;
+ return 0;
+ }
+
+ return vmw_cotable_resize(res, new_size);
+}
+
+/**
+ * vmw_hw_cotable_destroy - Cotable hw_destroy callback
+ *
+ * @res: Pointer to a cotable resource.
+ *
+ * The final (part of resource destruction) destroy callback.
+ */
+static void vmw_hw_cotable_destroy(struct vmw_resource *res)
+{
+ (void) vmw_cotable_destroy(res);
+}
+
+static size_t cotable_acc_size;
+
+/**
+ * vmw_cotable_free - Cotable resource destructor
+ *
+ * @res: Pointer to a cotable resource.
+ */
+static void vmw_cotable_free(struct vmw_resource *res)
+{
+ struct vmw_private *dev_priv = res->dev_priv;
+
+ kfree(res);
+ ttm_mem_global_free(vmw_mem_glob(dev_priv), cotable_acc_size);
+}
+
+/**
+ * vmw_cotable_alloc - Create a cotable resource
+ *
+ * @dev_priv: Pointer to a device private struct.
+ * @ctx: Pointer to the context resource.
+ * The cotable resource will not add a refcount.
+ * @type: The cotable type.
+ */
+struct vmw_resource *vmw_cotable_alloc(struct vmw_private *dev_priv,
+ struct vmw_resource *ctx,
+ u32 type)
+{
+ struct vmw_cotable *vcotbl;
+ int ret;
+ u32 num_entries;
+
+ if (unlikely(cotable_acc_size == 0))
+ cotable_acc_size = ttm_round_pot(sizeof(struct vmw_cotable));
+
+ ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
+ cotable_acc_size, false, true);
+ if (unlikely(ret))
+ return ERR_PTR(ret);
+
+ vcotbl = kzalloc(sizeof(*vcotbl), GFP_KERNEL);
+ if (unlikely(vcotbl == NULL)) {
+ ret = -ENOMEM;
+ goto out_no_alloc;
+ }
+
+ ret = vmw_resource_init(dev_priv, &vcotbl->res, true,
+ vmw_cotable_free, &vmw_cotable_func);
+ if (unlikely(ret != 0))
+ goto out_no_init;
+
+ INIT_LIST_HEAD(&vcotbl->resource_list);
+ vcotbl->res.id = type;
+ vcotbl->res.backup_size = PAGE_SIZE;
+ num_entries = PAGE_SIZE / co_info[type].size;
+ if (num_entries < co_info[type].min_initial_entries) {
+ vcotbl->res.backup_size = co_info[type].min_initial_entries *
+ co_info[type].size;
+ vcotbl->res.backup_size =
+ (vcotbl->res.backup_size + PAGE_SIZE - 1) & PAGE_MASK;
+ }
+
+ vcotbl->scrubbed = true;
+ vcotbl->seen_entries = -1;
+ vcotbl->type = type;
+ vcotbl->ctx = ctx;
+
+ vmw_resource_activate(&vcotbl->res, vmw_hw_cotable_destroy);
+
+ return &vcotbl->res;
+
+out_no_init:
+ kfree(vcotbl);
+out_no_alloc:
+ ttm_mem_global_free(vmw_mem_glob(dev_priv), cotable_acc_size);
+ return ERR_PTR(ret);
+}
+
+/**
+ * vmw_cotable_notify - Notify the cotable about an item creation
+ *
+ * @res: Pointer to a cotable resource.
+ * @id: Item id.
+ */
+int vmw_cotable_notify(struct vmw_resource *res, int id)
+{
+ struct vmw_cotable *vcotbl = vmw_cotable(res);
+
+ if (id < 0 || id >= SVGA_COTABLE_MAX_IDS) {
+ DRM_ERROR("Illegal COTable id. Type is %u. Id is %d\n",
+ (unsigned) vcotbl->type, id);
+ return -EINVAL;
+ }
+
+ if (vcotbl->seen_entries < id) {
+ /* Trigger a call to create() on next validate */
+ res->id = -1;
+ vcotbl->seen_entries = id;
+ }
+
+ return 0;
+}
+
+/**
+ * vmw_cotable_add_view - add a view to the cotable's list of active views.
+ *
+ * @res: pointer struct vmw_resource representing the cotable.
+ * @head: pointer to the struct list_head member of the resource, dedicated
+ * to the cotable active resource list.
+ */
+void vmw_cotable_add_resource(struct vmw_resource *res, struct list_head *head)
+{
+ struct vmw_cotable *vcotbl =
+ container_of(res, struct vmw_cotable, res);
+
+ list_add_tail(head, &vcotbl->resource_list);
+}
Code Review / kvmfornfv.git / blobdiff