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path: root/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
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Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_resource.c')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_resource.c1192
1 files changed, 1192 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
new file mode 100644
index 00000000000..a1ceed0c8e0
--- /dev/null
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
@@ -0,0 +1,1192 @@
+/**************************************************************************
+ *
+ * Copyright © 2009 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_drm.h"
+#include "ttm/ttm_object.h"
+#include "ttm/ttm_placement.h"
+#include "drmP.h"
+
+#define VMW_RES_CONTEXT ttm_driver_type0
+#define VMW_RES_SURFACE ttm_driver_type1
+#define VMW_RES_STREAM ttm_driver_type2
+
+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;
+};
+
+struct vmw_user_dma_buffer {
+ struct ttm_base_object base;
+ struct vmw_dma_buffer dma;
+};
+
+struct vmw_bo_user_rep {
+ uint32_t handle;
+ uint64_t map_handle;
+};
+
+struct vmw_stream {
+ struct vmw_resource res;
+ uint32_t stream_id;
+};
+
+struct vmw_user_stream {
+ struct ttm_base_object base;
+ struct vmw_stream stream;
+};
+
+static inline struct vmw_dma_buffer *
+vmw_dma_buffer(struct ttm_buffer_object *bo)
+{
+ return container_of(bo, struct vmw_dma_buffer, base);
+}
+
+static inline struct vmw_user_dma_buffer *
+vmw_user_dma_buffer(struct ttm_buffer_object *bo)
+{
+ struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
+ return container_of(vmw_bo, struct vmw_user_dma_buffer, dma);
+}
+
+struct vmw_resource *vmw_resource_reference(struct vmw_resource *res)
+{
+ kref_get(&res->kref);
+ return res;
+}
+
+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;
+
+ idr_remove(res->idr, res->id);
+ write_unlock(&dev_priv->resource_lock);
+
+ if (likely(res->hw_destroy != NULL))
+ res->hw_destroy(res);
+
+ if (res->res_free != NULL)
+ res->res_free(res);
+ else
+ kfree(res);
+
+ write_lock(&dev_priv->resource_lock);
+}
+
+void vmw_resource_unreference(struct vmw_resource **p_res)
+{
+ struct vmw_resource *res = *p_res;
+ struct vmw_private *dev_priv = res->dev_priv;
+
+ *p_res = NULL;
+ write_lock(&dev_priv->resource_lock);
+ kref_put(&res->kref, vmw_resource_release);
+ write_unlock(&dev_priv->resource_lock);
+}
+
+static int vmw_resource_init(struct vmw_private *dev_priv,
+ struct vmw_resource *res,
+ struct idr *idr,
+ enum ttm_object_type obj_type,
+ void (*res_free) (struct vmw_resource *res))
+{
+ int ret;
+
+ kref_init(&res->kref);
+ res->hw_destroy = NULL;
+ res->res_free = res_free;
+ res->res_type = obj_type;
+ res->idr = idr;
+ res->avail = false;
+ res->dev_priv = dev_priv;
+
+ do {
+ if (unlikely(idr_pre_get(idr, GFP_KERNEL) == 0))
+ return -ENOMEM;
+
+ write_lock(&dev_priv->resource_lock);
+ ret = idr_get_new_above(idr, res, 1, &res->id);
+ write_unlock(&dev_priv->resource_lock);
+
+ } while (ret == -EAGAIN);
+
+ return ret;
+}
+
+/**
+ * vmw_resource_activate
+ *
+ * @res: Pointer to the newly created resource
+ * @hw_destroy: Destroy function. NULL if none.
+ *
+ * Activate a resource after the hardware has been made aware of it.
+ * Set tye destroy function to @destroy. Typically this frees the
+ * resource and destroys the hardware resources associated with it.
+ * 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 *))
+{
+ struct vmw_private *dev_priv = res->dev_priv;
+
+ write_lock(&dev_priv->resource_lock);
+ res->avail = true;
+ res->hw_destroy = hw_destroy;
+ write_unlock(&dev_priv->resource_lock);
+}
+
+struct vmw_resource *vmw_resource_lookup(struct vmw_private *dev_priv,
+ struct idr *idr, int id)
+{
+ struct vmw_resource *res;
+
+ read_lock(&dev_priv->resource_lock);
+ res = idr_find(idr, id);
+ if (res && res->avail)
+ kref_get(&res->kref);
+ else
+ res = NULL;
+ read_unlock(&dev_priv->resource_lock);
+
+ if (unlikely(res == NULL))
+ return NULL;
+
+ return res;
+}
+
+/**
+ * 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_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));
+}
+
+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, res_free);
+
+ if (unlikely(ret != 0)) {
+ if (res_free == NULL)
+ kfree(res);
+ else
+ res_free(res);
+ return ret;
+ }
+
+ 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));
+ vmw_resource_activate(res, vmw_hw_context_destroy);
+ return 0;
+}
+
+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);
+
+ kfree(ctx);
+}
+
+/**
+ * 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 = kmalloc(sizeof(*ctx), GFP_KERNEL);
+ 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 (unlikely(ctx == NULL))
+ return -ENOMEM;
+
+ res = &ctx->res;
+ ctx->base.shareable = false;
+ ctx->base.tfile = NULL;
+
+ ret = vmw_context_init(dev_priv, res, vmw_user_context_free);
+ if (unlikely(ret != 0))
+ return ret;
+
+ 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);
+ return ret;
+
+}
+
+int vmw_context_check(struct vmw_private *dev_priv,
+ struct ttm_object_file *tfile,
+ int id)
+{
+ 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;
+ } else
+ ret = -EINVAL;
+ read_unlock(&dev_priv->resource_lock);
+
+ return ret;
+}
+
+
+/**
+ * Surface management.
+ */
+
+static void vmw_hw_surface_destroy(struct vmw_resource *res)
+{
+
+ struct vmw_private *dev_priv = res->dev_priv;
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdDestroySurface body;
+ } *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_SURFACE_DESTROY);
+ cmd->header.size = cpu_to_le32(sizeof(cmd->body));
+ cmd->body.sid = cpu_to_le32(res->id);
+
+ vmw_fifo_commit(dev_priv, sizeof(*cmd));
+}
+
+void vmw_surface_res_free(struct vmw_resource *res)
+{
+ struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
+
+ kfree(srf->sizes);
+ kfree(srf->snooper.image);
+ kfree(srf);
+}
+
+int vmw_surface_init(struct vmw_private *dev_priv,
+ struct vmw_surface *srf,
+ void (*res_free) (struct vmw_resource *res))
+{
+ int ret;
+ struct {
+ SVGA3dCmdHeader header;
+ SVGA3dCmdDefineSurface body;
+ } *cmd;
+ SVGA3dSize *cmd_size;
+ struct vmw_resource *res = &srf->res;
+ struct drm_vmw_size *src_size;
+ size_t submit_size;
+ uint32_t cmd_len;
+ int i;
+
+ BUG_ON(res_free == NULL);
+ ret = vmw_resource_init(dev_priv, res, &dev_priv->surface_idr,
+ VMW_RES_SURFACE, res_free);
+
+ if (unlikely(ret != 0)) {
+ res_free(res);
+ return ret;
+ }
+
+ submit_size = sizeof(*cmd) + srf->num_sizes * sizeof(SVGA3dSize);
+ cmd_len = sizeof(cmd->body) + srf->num_sizes * sizeof(SVGA3dSize);
+
+ cmd = vmw_fifo_reserve(dev_priv, submit_size);
+ if (unlikely(cmd == NULL)) {
+ DRM_ERROR("Fifo reserve failed for create surface.\n");
+ vmw_resource_unreference(&res);
+ return -ENOMEM;
+ }
+
+ cmd->header.id = cpu_to_le32(SVGA_3D_CMD_SURFACE_DEFINE);
+ cmd->header.size = cpu_to_le32(cmd_len);
+ cmd->body.sid = cpu_to_le32(res->id);
+ cmd->body.surfaceFlags = cpu_to_le32(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 =
+ cpu_to_le32(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 = cpu_to_le32(src_size->width);
+ cmd_size->height = cpu_to_le32(src_size->height);
+ cmd_size->depth = cpu_to_le32(src_size->depth);
+ }
+
+ vmw_fifo_commit(dev_priv, submit_size);
+ vmw_resource_activate(res, vmw_hw_surface_destroy);
+ return 0;
+}
+
+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);
+
+ kfree(srf->sizes);
+ kfree(srf->snooper.image);
+ kfree(user_srf);
+}
+
+int vmw_user_surface_lookup(struct vmw_private *dev_priv,
+ struct ttm_object_file *tfile,
+ int sid, struct vmw_surface **out)
+{
+ struct vmw_resource *res;
+ struct vmw_surface *srf;
+ struct vmw_user_surface *user_srf;
+
+ res = vmw_resource_lookup(dev_priv, &dev_priv->surface_idr, sid);
+ if (unlikely(res == NULL))
+ return -EINVAL;
+
+ if (res->res_free != &vmw_user_surface_free)
+ return -EINVAL;
+
+ srf = container_of(res, struct vmw_surface, res);
+ user_srf = container_of(srf, struct vmw_user_surface, srf);
+ if (user_srf->base.tfile != tfile && !user_srf->base.shareable)
+ return -EPERM;
+
+ *out = srf;
+ return 0;
+}
+
+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 vmw_private *dev_priv = vmw_priv(dev);
+ struct vmw_resource *res;
+ struct vmw_surface *srf;
+ struct vmw_user_surface *user_srf;
+ struct drm_vmw_surface_arg *arg = (struct drm_vmw_surface_arg *)data;
+ struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
+ int ret = 0;
+
+ res = vmw_resource_lookup(dev_priv, &dev_priv->surface_idr, arg->sid);
+ if (unlikely(res == NULL))
+ return -EINVAL;
+
+ if (res->res_free != &vmw_user_surface_free) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ srf = container_of(res, struct vmw_surface, res);
+ user_srf = container_of(srf, struct vmw_user_surface, srf);
+ if (user_srf->base.tfile != tfile && !user_srf->base.shareable) {
+ ret = -EPERM;
+ goto out;
+ }
+
+ ttm_ref_object_base_unref(tfile, user_srf->base.hash.key,
+ TTM_REF_USAGE);
+out:
+ vmw_resource_unreference(&res);
+ return ret;
+}
+
+int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct vmw_private *dev_priv = vmw_priv(dev);
+ struct vmw_user_surface *user_srf =
+ kmalloc(sizeof(*user_srf), GFP_KERNEL);
+ 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;
+
+ if (unlikely(user_srf == NULL))
+ return -ENOMEM;
+
+ srf = &user_srf->srf;
+ res = &srf->res;
+
+ srf->flags = req->flags;
+ srf->format = req->format;
+ memcpy(srf->mip_levels, req->mip_levels, sizeof(srf->mip_levels));
+ srf->num_sizes = 0;
+ for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
+ srf->num_sizes += srf->mip_levels[i];
+
+ if (srf->num_sizes > DRM_VMW_MAX_SURFACE_FACES *
+ DRM_VMW_MAX_MIP_LEVELS) {
+ ret = -EINVAL;
+ goto out_err0;
+ }
+
+ srf->sizes = kmalloc(srf->num_sizes * sizeof(*srf->sizes), GFP_KERNEL);
+ if (unlikely(srf->sizes == NULL)) {
+ ret = -ENOMEM;
+ goto out_err0;
+ }
+
+ 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))
+ goto out_err1;
+
+ 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))
+ return ret;
+
+ 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);
+ return ret;
+ }
+
+ if (srf->flags & (1 << 9) &&
+ srf->num_sizes == 1 &&
+ srf->sizes[0].width == 64 &&
+ srf->sizes[0].height == 64 &&
+ srf->format == SVGA3D_A8R8G8B8) {
+
+ srf->snooper.image = kmalloc(64 * 64 * 4, GFP_KERNEL);
+ /* clear the image */
+ if (srf->snooper.image)
+ memset(srf->snooper.image, 0x00, 64 * 64 * 4);
+ else
+ DRM_ERROR("Failed to allocate cursor_image\n");
+
+ } else {
+ srf->snooper.image = NULL;
+ }
+ srf->snooper.crtc = NULL;
+
+ rep->sid = res->id;
+ vmw_resource_unreference(&res);
+ return 0;
+out_err1:
+ kfree(srf->sizes);
+out_err0:
+ kfree(user_srf);
+ return ret;
+}
+
+int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct vmw_private *dev_priv = vmw_priv(dev);
+ 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_resource *res;
+ struct vmw_surface *srf;
+ struct vmw_user_surface *user_srf;
+ struct drm_vmw_size __user *user_sizes;
+ int ret;
+
+ res = vmw_resource_lookup(dev_priv, &dev_priv->surface_idr, req->sid);
+ if (unlikely(res == NULL))
+ return -EINVAL;
+
+ if (res->res_free != &vmw_user_surface_free) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ srf = container_of(res, struct vmw_surface, res);
+ user_srf = container_of(srf, struct vmw_user_surface, srf);
+ if (user_srf->base.tfile != tfile && !user_srf->base.shareable) {
+ DRM_ERROR("Tried to reference none shareable surface\n");
+ ret = -EPERM;
+ goto out;
+ }
+
+ 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;
+ }
+
+ 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;
+
+ 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);
+ /**
+ * FIXME: Unreference surface here?
+ */
+ goto out;
+ }
+out:
+ vmw_resource_unreference(&res);
+ return ret;
+}
+
+int vmw_surface_check(struct vmw_private *dev_priv,
+ struct ttm_object_file *tfile,
+ int id)
+{
+ struct vmw_resource *res;
+ int ret = 0;
+
+ read_lock(&dev_priv->resource_lock);
+ res = idr_find(&dev_priv->surface_idr, id);
+ if (res && res->avail) {
+ struct vmw_surface *srf =
+ container_of(res, struct vmw_surface, res);
+ struct vmw_user_surface *usrf =
+ container_of(srf, struct vmw_user_surface, srf);
+
+ if (usrf->base.tfile != tfile && !usrf->base.shareable)
+ ret = -EPERM;
+ } else
+ ret = -EINVAL;
+ read_unlock(&dev_priv->resource_lock);
+
+ return ret;
+}
+
+/**
+ * Buffer management.
+ */
+
+static size_t vmw_dmabuf_acc_size(struct ttm_bo_global *glob,
+ unsigned long num_pages)
+{
+ static size_t bo_user_size = ~0;
+
+ size_t page_array_size =
+ (num_pages * sizeof(void *) + PAGE_SIZE - 1) & PAGE_MASK;
+
+ if (unlikely(bo_user_size == ~0)) {
+ bo_user_size = glob->ttm_bo_extra_size +
+ ttm_round_pot(sizeof(struct vmw_dma_buffer));
+ }
+
+ return bo_user_size + page_array_size;
+}
+
+void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo)
+{
+ struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
+ struct ttm_bo_global *glob = bo->glob;
+ struct vmw_private *dev_priv =
+ container_of(bo->bdev, struct vmw_private, bdev);
+
+ ttm_mem_global_free(glob->mem_glob, bo->acc_size);
+ if (vmw_bo->gmr_bound) {
+ vmw_gmr_unbind(dev_priv, vmw_bo->gmr_id);
+ spin_lock(&glob->lru_lock);
+ ida_remove(&dev_priv->gmr_ida, vmw_bo->gmr_id);
+ spin_unlock(&glob->lru_lock);
+ }
+ kfree(vmw_bo);
+}
+
+int vmw_dmabuf_init(struct vmw_private *dev_priv,
+ struct vmw_dma_buffer *vmw_bo,
+ size_t size, struct ttm_placement *placement,
+ bool interruptible,
+ void (*bo_free) (struct ttm_buffer_object *bo))
+{
+ struct ttm_bo_device *bdev = &dev_priv->bdev;
+ struct ttm_mem_global *mem_glob = bdev->glob->mem_glob;
+ size_t acc_size;
+ int ret;
+
+ BUG_ON(!bo_free);
+
+ acc_size =
+ vmw_dmabuf_acc_size(bdev->glob,
+ (size + PAGE_SIZE - 1) >> PAGE_SHIFT);
+
+ ret = ttm_mem_global_alloc(mem_glob, acc_size, false, false);
+ if (unlikely(ret != 0)) {
+ /* we must free the bo here as
+ * ttm_buffer_object_init does so as well */
+ bo_free(&vmw_bo->base);
+ return ret;
+ }
+
+ memset(vmw_bo, 0, sizeof(*vmw_bo));
+
+ INIT_LIST_HEAD(&vmw_bo->gmr_lru);
+ INIT_LIST_HEAD(&vmw_bo->validate_list);
+ vmw_bo->gmr_id = 0;
+ vmw_bo->gmr_bound = false;
+
+ ret = ttm_bo_init(bdev, &vmw_bo->base, size,
+ ttm_bo_type_device, placement,
+ 0, 0, interruptible,
+ NULL, acc_size, bo_free);
+ return ret;
+}
+
+static void vmw_user_dmabuf_destroy(struct ttm_buffer_object *bo)
+{
+ struct vmw_user_dma_buffer *vmw_user_bo = vmw_user_dma_buffer(bo);
+ struct vmw_dma_buffer *vmw_bo = &vmw_user_bo->dma;
+ struct ttm_bo_global *glob = bo->glob;
+ struct vmw_private *dev_priv =
+ container_of(bo->bdev, struct vmw_private, bdev);
+
+ ttm_mem_global_free(glob->mem_glob, bo->acc_size);
+ if (vmw_bo->gmr_bound) {
+ vmw_gmr_unbind(dev_priv, vmw_bo->gmr_id);
+ spin_lock(&glob->lru_lock);
+ ida_remove(&dev_priv->gmr_ida, vmw_bo->gmr_id);
+ spin_unlock(&glob->lru_lock);
+ }
+ kfree(vmw_user_bo);
+}
+
+static void vmw_user_dmabuf_release(struct ttm_base_object **p_base)
+{
+ struct vmw_user_dma_buffer *vmw_user_bo;
+ struct ttm_base_object *base = *p_base;
+ struct ttm_buffer_object *bo;
+
+ *p_base = NULL;
+
+ if (unlikely(base == NULL))
+ return;
+
+ vmw_user_bo = container_of(base, struct vmw_user_dma_buffer, base);
+ bo = &vmw_user_bo->dma.base;
+ ttm_bo_unref(&bo);
+}
+
+int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct vmw_private *dev_priv = vmw_priv(dev);
+ union drm_vmw_alloc_dmabuf_arg *arg =
+ (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_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);
+ return ret;
+ }
+
+ ret = vmw_dmabuf_init(dev_priv, &vmw_user_bo->dma, req->size,
+ &vmw_vram_placement, true,
+ &vmw_user_dmabuf_destroy);
+ if (unlikely(ret != 0))
+ return ret;
+
+ 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)) {
+ ttm_bo_unref(&tmp);
+ } 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;
+ }
+ ttm_bo_unref(&tmp);
+
+ ttm_read_unlock(&vmaster->lock);
+
+ return 0;
+}
+
+int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_vmw_unref_dmabuf_arg *arg =
+ (struct drm_vmw_unref_dmabuf_arg *)data;
+
+ return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
+ arg->handle,
+ 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;
+}
+
+uint32_t vmw_dmabuf_gmr(struct ttm_buffer_object *bo)
+{
+ struct vmw_dma_buffer *vmw_bo;
+
+ if (bo->mem.mem_type == TTM_PL_VRAM)
+ return SVGA_GMR_FRAMEBUFFER;
+
+ vmw_bo = vmw_dma_buffer(bo);
+
+ return (vmw_bo->gmr_bound) ? vmw_bo->gmr_id : SVGA_GMR_NULL;
+}
+
+void vmw_dmabuf_set_gmr(struct ttm_buffer_object *bo, uint32_t id)
+{
+ struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
+ vmw_bo->gmr_bound = true;
+ vmw_bo->gmr_id = id;
+}
+
+int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
+ uint32_t handle, struct vmw_dma_buffer **out)
+{
+ struct vmw_user_dma_buffer *vmw_user_bo;
+ struct ttm_base_object *base;
+
+ base = ttm_base_object_lookup(tfile, handle);
+ if (unlikely(base == NULL)) {
+ printk(KERN_ERR "Invalid buffer object handle 0x%08lx.\n",
+ (unsigned long)handle);
+ return -ESRCH;
+ }
+
+ if (unlikely(base->object_type != ttm_buffer_type)) {
+ ttm_base_object_unref(&base);
+ printk(KERN_ERR "Invalid buffer object handle 0x%08lx.\n",
+ (unsigned long)handle);
+ return -EINVAL;
+ }
+
+ vmw_user_bo = container_of(base, struct vmw_user_dma_buffer, base);
+ (void)ttm_bo_reference(&vmw_user_bo->dma.base);
+ ttm_base_object_unref(&base);
+ *out = &vmw_user_bo->dma;
+
+ return 0;
+}
+
+/**
+ * TODO: Implement a gmr id eviction mechanism. Currently we just fail
+ * when we're out of ids, causing GMR space to be allocated
+ * out of VRAM.
+ */
+
+int vmw_gmr_id_alloc(struct vmw_private *dev_priv, uint32_t *p_id)
+{
+ struct ttm_bo_global *glob = dev_priv->bdev.glob;
+ int id;
+ int ret;
+
+ do {
+ if (unlikely(ida_pre_get(&dev_priv->gmr_ida, GFP_KERNEL) == 0))
+ return -ENOMEM;
+
+ spin_lock(&glob->lru_lock);
+ ret = ida_get_new(&dev_priv->gmr_ida, &id);
+ spin_unlock(&glob->lru_lock);
+ } while (ret == -EAGAIN);
+
+ if (unlikely(ret != 0))
+ return ret;
+
+ if (unlikely(id >= dev_priv->max_gmr_ids)) {
+ spin_lock(&glob->lru_lock);
+ ida_remove(&dev_priv->gmr_ida, id);
+ spin_unlock(&glob->lru_lock);
+ return -EBUSY;
+ }
+
+ *p_id = (uint32_t) id;
+ return 0;
+}
+
+/*
+ * Stream managment
+ */
+
+static void vmw_stream_destroy(struct vmw_resource *res)
+{
+ struct vmw_private *dev_priv = res->dev_priv;
+ struct vmw_stream *stream;
+ int ret;
+
+ DRM_INFO("%s: unref\n", __func__);
+ stream = container_of(res, struct vmw_stream, res);
+
+ ret = vmw_overlay_unref(dev_priv, stream->stream_id);
+ WARN_ON(ret != 0);
+}
+
+static int vmw_stream_init(struct vmw_private *dev_priv,
+ struct vmw_stream *stream,
+ void (*res_free) (struct vmw_resource *res))
+{
+ struct vmw_resource *res = &stream->res;
+ int ret;
+
+ ret = vmw_resource_init(dev_priv, res, &dev_priv->stream_idr,
+ VMW_RES_STREAM, res_free);
+
+ if (unlikely(ret != 0)) {
+ if (res_free == NULL)
+ kfree(stream);
+ else
+ res_free(&stream->res);
+ return ret;
+ }
+
+ ret = vmw_overlay_claim(dev_priv, &stream->stream_id);
+ if (ret) {
+ vmw_resource_unreference(&res);
+ return ret;
+ }
+
+ DRM_INFO("%s: claimed\n", __func__);
+
+ vmw_resource_activate(&stream->res, vmw_stream_destroy);
+ 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);
+
+ kfree(stream);
+}
+
+/**
+ * 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_stream_base_release(struct ttm_base_object **p_base)
+{
+ struct ttm_base_object *base = *p_base;
+ struct vmw_user_stream *stream =
+ container_of(base, struct vmw_user_stream, base);
+ struct vmw_resource *res = &stream->stream.res;
+
+ *p_base = NULL;
+ vmw_resource_unreference(&res);
+}
+
+int vmw_stream_unref_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_stream *stream;
+ struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data;
+ struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
+ int ret = 0;
+
+ res = vmw_resource_lookup(dev_priv, &dev_priv->stream_idr, arg->stream_id);
+ if (unlikely(res == NULL))
+ return -EINVAL;
+
+ if (res->res_free != &vmw_user_stream_free) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ stream = container_of(res, struct vmw_user_stream, stream.res);
+ if (stream->base.tfile != tfile) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ttm_ref_object_base_unref(tfile, stream->base.hash.key, TTM_REF_USAGE);
+out:
+ vmw_resource_unreference(&res);
+ return ret;
+}
+
+int vmw_stream_claim_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct vmw_private *dev_priv = vmw_priv(dev);
+ struct vmw_user_stream *stream = kmalloc(sizeof(*stream), GFP_KERNEL);
+ struct vmw_resource *res;
+ struct vmw_resource *tmp;
+ struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data;
+ struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
+ int ret;
+
+ if (unlikely(stream == NULL))
+ return -ENOMEM;
+
+ res = &stream->stream.res;
+ stream->base.shareable = false;
+ stream->base.tfile = NULL;
+
+ ret = vmw_stream_init(dev_priv, &stream->stream, vmw_user_stream_free);
+ if (unlikely(ret != 0))
+ return ret;
+
+ tmp = vmw_resource_reference(res);
+ ret = ttm_base_object_init(tfile, &stream->base, false, VMW_RES_STREAM,
+ &vmw_user_stream_base_release, NULL);
+
+ if (unlikely(ret != 0)) {
+ vmw_resource_unreference(&tmp);
+ goto out_err;
+ }
+
+ arg->stream_id = res->id;
+out_err:
+ vmw_resource_unreference(&res);
+ return ret;
+}
+
+int vmw_user_stream_lookup(struct vmw_private *dev_priv,
+ struct ttm_object_file *tfile,
+ uint32_t *inout_id, struct vmw_resource **out)
+{
+ struct vmw_user_stream *stream;
+ struct vmw_resource *res;
+ int ret;
+
+ res = vmw_resource_lookup(dev_priv, &dev_priv->stream_idr, *inout_id);
+ if (unlikely(res == NULL))
+ return -EINVAL;
+
+ if (res->res_free != &vmw_user_stream_free) {
+ ret = -EINVAL;
+ goto err_ref;
+ }
+
+ stream = container_of(res, struct vmw_user_stream, stream.res);
+ if (stream->base.tfile != tfile) {
+ ret = -EPERM;
+ goto err_ref;
+ }
+
+ *inout_id = stream->stream.stream_id;
+ *out = res;
+ return 0;
+err_ref:
+ vmw_resource_unreference(&res);
+ return ret;
+}