#include "vmwgfx_resource_priv.h"
#include "ttm/ttm_placement.h"
+#define VMW_COMPAT_SHADER_HT_ORDER 12
+
struct vmw_shader {
struct vmw_resource res;
SVGA3dShaderType type;
struct vmw_shader shader;
};
+/**
+ * enum vmw_compat_shader_state - Staging state for compat shaders
+ */
+enum vmw_compat_shader_state {
+ VMW_COMPAT_COMMITED,
+ VMW_COMPAT_ADD,
+ VMW_COMPAT_DEL
+};
+
+/**
+ * struct vmw_compat_shader - Metadata for compat shaders.
+ *
+ * @handle: The TTM handle of the guest backed shader.
+ * @tfile: The struct ttm_object_file the guest backed shader is registered
+ * with.
+ * @hash: Hash item for lookup.
+ * @head: List head for staging lists or the compat shader manager list.
+ * @state: Staging state.
+ *
+ * The structure is protected by the cmdbuf lock.
+ */
+struct vmw_compat_shader {
+ u32 handle;
+ struct ttm_object_file *tfile;
+ struct drm_hash_item hash;
+ struct list_head head;
+ enum vmw_compat_shader_state state;
+};
+
+/**
+ * struct vmw_compat_shader_manager - Compat shader manager.
+ *
+ * @shaders: Hash table containing staged and commited compat shaders
+ * @list: List of commited shaders.
+ * @dev_priv: Pointer to a device private structure.
+ *
+ * @shaders and @list are protected by the cmdbuf mutex for now.
+ */
+struct vmw_compat_shader_manager {
+ struct drm_open_hash shaders;
+ struct list_head list;
+ struct vmw_private *dev_priv;
+};
+
static void vmw_user_shader_free(struct vmw_resource *res);
static struct vmw_resource *
vmw_user_shader_base_to_res(struct ttm_base_object *base);
return 0;
mutex_lock(&dev_priv->binding_mutex);
- vmw_context_binding_res_list_kill(&res->binding_head);
+ vmw_context_binding_res_list_scrub(&res->binding_head);
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
TTM_REF_USAGE);
}
+int vmw_shader_alloc(struct vmw_private *dev_priv,
+ struct vmw_dma_buffer *buffer,
+ size_t shader_size,
+ size_t offset,
+ SVGA3dShaderType shader_type,
+ struct ttm_object_file *tfile,
+ u32 *handle)
+{
+ struct vmw_user_shader *ushader;
+ struct vmw_resource *res, *tmp;
+ int ret;
+
+ /*
+ * Approximate idr memory usage with 128 bytes. It will be limited
+ * by maximum number_of shaders anyway.
+ */
+ if (unlikely(vmw_user_shader_size == 0))
+ vmw_user_shader_size =
+ ttm_round_pot(sizeof(struct vmw_user_shader)) + 128;
+
+ ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
+ vmw_user_shader_size,
+ false, true);
+ if (unlikely(ret != 0)) {
+ if (ret != -ERESTARTSYS)
+ DRM_ERROR("Out of graphics memory for shader "
+ "creation.\n");
+ goto out;
+ }
+
+ ushader = kzalloc(sizeof(*ushader), GFP_KERNEL);
+ if (unlikely(ushader == NULL)) {
+ ttm_mem_global_free(vmw_mem_glob(dev_priv),
+ vmw_user_shader_size);
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ res = &ushader->shader.res;
+ ushader->base.shareable = false;
+ ushader->base.tfile = NULL;
+
+ /*
+ * From here on, the destructor takes over resource freeing.
+ */
+
+ ret = vmw_gb_shader_init(dev_priv, res, shader_size,
+ offset, shader_type, buffer,
+ vmw_user_shader_free);
+ if (unlikely(ret != 0))
+ goto out;
+
+ tmp = vmw_resource_reference(res);
+ ret = ttm_base_object_init(tfile, &ushader->base, false,
+ VMW_RES_SHADER,
+ &vmw_user_shader_base_release, NULL);
+
+ if (unlikely(ret != 0)) {
+ vmw_resource_unreference(&tmp);
+ goto out_err;
+ }
+
+ if (handle)
+ *handle = ushader->base.hash.key;
+out_err:
+ vmw_resource_unreference(&res);
+out:
+ return ret;
+}
+
+
int vmw_shader_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct vmw_private *dev_priv = vmw_priv(dev);
- struct vmw_user_shader *ushader;
- struct vmw_resource *res;
- struct vmw_resource *tmp;
struct drm_vmw_shader_create_arg *arg =
(struct drm_vmw_shader_create_arg *)data;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
goto out_bad_arg;
}
- /*
- * Approximate idr memory usage with 128 bytes. It will be limited
- * by maximum number_of shaders anyway.
- */
+ ret = ttm_read_lock(&vmaster->lock, true);
+ if (unlikely(ret != 0))
+ goto out_bad_arg;
- if (unlikely(vmw_user_shader_size == 0))
- vmw_user_shader_size = ttm_round_pot(sizeof(*ushader))
- + 128;
+ ret = vmw_shader_alloc(dev_priv, buffer, arg->size, arg->offset,
+ shader_type, tfile, &arg->shader_handle);
- ret = ttm_read_lock(&vmaster->lock, true);
+ ttm_read_unlock(&vmaster->lock);
+out_bad_arg:
+ vmw_dmabuf_unreference(&buffer);
+ return ret;
+}
+
+/**
+ * vmw_compat_shader_lookup - Look up a compat shader
+ *
+ * @man: Pointer to the compat shader manager.
+ * @shader_type: The shader type, that combined with the user_key identifies
+ * the shader.
+ * @user_key: On entry, this should be a pointer to the user_key.
+ * On successful exit, it will contain the guest-backed shader's TTM handle.
+ *
+ * Returns 0 on success. Non-zero on failure, in which case the value pointed
+ * to by @user_key is unmodified.
+ */
+int vmw_compat_shader_lookup(struct vmw_compat_shader_manager *man,
+ SVGA3dShaderType shader_type,
+ u32 *user_key)
+{
+ struct drm_hash_item *hash;
+ int ret;
+ unsigned long key = *user_key | (shader_type << 24);
+
+ ret = drm_ht_find_item(&man->shaders, key, &hash);
if (unlikely(ret != 0))
return ret;
- ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
- vmw_user_shader_size,
- false, true);
- if (unlikely(ret != 0)) {
- if (ret != -ERESTARTSYS)
- DRM_ERROR("Out of graphics memory for shader"
- " creation.\n");
- goto out_unlock;
+ *user_key = drm_hash_entry(hash, struct vmw_compat_shader,
+ hash)->handle;
+
+ return 0;
+}
+
+/**
+ * vmw_compat_shader_free - Free a compat shader.
+ *
+ * @man: Pointer to the compat shader manager.
+ * @entry: Pointer to a struct vmw_compat_shader.
+ *
+ * Frees a struct vmw_compat_shder entry and drops its reference to the
+ * guest backed shader.
+ */
+static void vmw_compat_shader_free(struct vmw_compat_shader_manager *man,
+ struct vmw_compat_shader *entry)
+{
+ list_del(&entry->head);
+ WARN_ON(drm_ht_remove_item(&man->shaders, &entry->hash));
+ WARN_ON(ttm_ref_object_base_unref(entry->tfile, entry->handle,
+ TTM_REF_USAGE));
+ kfree(entry);
+}
+
+/**
+ * vmw_compat_shaders_commit - Commit a list of compat shader actions.
+ *
+ * @man: Pointer to the compat shader manager.
+ * @list: Caller's list of compat shader actions.
+ *
+ * This function commits a list of compat shader additions or removals.
+ * It is typically called when the execbuf ioctl call triggering these
+ * actions has commited the fifo contents to the device.
+ */
+void vmw_compat_shaders_commit(struct vmw_compat_shader_manager *man,
+ struct list_head *list)
+{
+ struct vmw_compat_shader *entry, *next;
+
+ list_for_each_entry_safe(entry, next, list, head) {
+ list_del(&entry->head);
+ switch (entry->state) {
+ case VMW_COMPAT_ADD:
+ entry->state = VMW_COMPAT_COMMITED;
+ list_add_tail(&entry->head, &man->list);
+ break;
+ case VMW_COMPAT_DEL:
+ ttm_ref_object_base_unref(entry->tfile, entry->handle,
+ TTM_REF_USAGE);
+ kfree(entry);
+ break;
+ default:
+ BUG();
+ break;
+ }
}
+}
- ushader = kzalloc(sizeof(*ushader), GFP_KERNEL);
- if (unlikely(ushader == NULL)) {
- ttm_mem_global_free(vmw_mem_glob(dev_priv),
- vmw_user_shader_size);
- ret = -ENOMEM;
- goto out_unlock;
+/**
+ * vmw_compat_shaders_revert - Revert a list of compat shader actions
+ *
+ * @man: Pointer to the compat shader manager.
+ * @list: Caller's list of compat shader actions.
+ *
+ * This function reverts a list of compat shader additions or removals.
+ * It is typically called when the execbuf ioctl call triggering these
+ * actions failed for some reason, and the command stream was never
+ * submitted.
+ */
+void vmw_compat_shaders_revert(struct vmw_compat_shader_manager *man,
+ struct list_head *list)
+{
+ struct vmw_compat_shader *entry, *next;
+ int ret;
+
+ list_for_each_entry_safe(entry, next, list, head) {
+ switch (entry->state) {
+ case VMW_COMPAT_ADD:
+ vmw_compat_shader_free(man, entry);
+ break;
+ case VMW_COMPAT_DEL:
+ ret = drm_ht_insert_item(&man->shaders, &entry->hash);
+ list_del(&entry->head);
+ list_add_tail(&entry->head, &man->list);
+ entry->state = VMW_COMPAT_COMMITED;
+ break;
+ default:
+ BUG();
+ break;
+ }
}
+}
- res = &ushader->shader.res;
- ushader->base.shareable = false;
- ushader->base.tfile = NULL;
+/**
+ * vmw_compat_shader_remove - Stage a compat shader for removal.
+ *
+ * @man: Pointer to the compat shader manager
+ * @user_key: The key that is used to identify the shader. The key is
+ * unique to the shader type.
+ * @shader_type: Shader type.
+ * @list: Caller's list of staged shader actions.
+ *
+ * This function stages a compat shader for removal and removes the key from
+ * the shader manager's hash table. If the shader was previously only staged
+ * for addition it is completely removed (But the execbuf code may keep a
+ * reference if it was bound to a context between addition and removal). If
+ * it was previously commited to the manager, it is staged for removal.
+ */
+int vmw_compat_shader_remove(struct vmw_compat_shader_manager *man,
+ u32 user_key, SVGA3dShaderType shader_type,
+ struct list_head *list)
+{
+ struct vmw_compat_shader *entry;
+ struct drm_hash_item *hash;
+ int ret;
- /*
- * From here on, the destructor takes over resource freeing.
- */
+ ret = drm_ht_find_item(&man->shaders, user_key | (shader_type << 24),
+ &hash);
+ if (likely(ret != 0))
+ return -EINVAL;
- ret = vmw_gb_shader_init(dev_priv, res, arg->size,
- arg->offset, shader_type, buffer,
- vmw_user_shader_free);
+ entry = drm_hash_entry(hash, struct vmw_compat_shader, hash);
+
+ switch (entry->state) {
+ case VMW_COMPAT_ADD:
+ vmw_compat_shader_free(man, entry);
+ break;
+ case VMW_COMPAT_COMMITED:
+ (void) drm_ht_remove_item(&man->shaders, &entry->hash);
+ list_del(&entry->head);
+ entry->state = VMW_COMPAT_DEL;
+ list_add_tail(&entry->head, list);
+ break;
+ default:
+ BUG();
+ break;
+ }
+
+ return 0;
+}
+
+/**
+ * vmw_compat_shader_add - Create a compat shader and add the
+ * key to the manager
+ *
+ * @man: Pointer to the compat shader manager
+ * @user_key: The key that is used to identify the shader. The key is
+ * unique to the shader type.
+ * @bytecode: Pointer to the bytecode of the shader.
+ * @shader_type: Shader type.
+ * @tfile: Pointer to a struct ttm_object_file that the guest-backed shader is
+ * to be created with.
+ * @list: Caller's list of staged shader actions.
+ *
+ * Note that only the key is added to the shader manager's hash table.
+ * The shader is not yet added to the shader manager's list of shaders.
+ */
+int vmw_compat_shader_add(struct vmw_compat_shader_manager *man,
+ u32 user_key, const void *bytecode,
+ SVGA3dShaderType shader_type,
+ size_t size,
+ struct ttm_object_file *tfile,
+ struct list_head *list)
+{
+ struct vmw_dma_buffer *buf;
+ struct ttm_bo_kmap_obj map;
+ bool is_iomem;
+ struct vmw_compat_shader *compat;
+ u32 handle;
+ int ret;
+
+ if (user_key > ((1 << 24) - 1) || (unsigned) shader_type > 16)
+ return -EINVAL;
+
+ /* Allocate and pin a DMA buffer */
+ buf = kzalloc(sizeof(*buf), GFP_KERNEL);
+ if (unlikely(buf == NULL))
+ return -ENOMEM;
+
+ ret = vmw_dmabuf_init(man->dev_priv, buf, size, &vmw_sys_ne_placement,
+ true, vmw_dmabuf_bo_free);
if (unlikely(ret != 0))
- goto out_unlock;
+ goto out;
- tmp = vmw_resource_reference(res);
- ret = ttm_base_object_init(tfile, &ushader->base, false,
- VMW_RES_SHADER,
- &vmw_user_shader_base_release, NULL);
+ ret = ttm_bo_reserve(&buf->base, false, true, false, NULL);
+ if (unlikely(ret != 0))
+ goto no_reserve;
+ /* Map and copy shader bytecode. */
+ ret = ttm_bo_kmap(&buf->base, 0, PAGE_ALIGN(size) >> PAGE_SHIFT,
+ &map);
if (unlikely(ret != 0)) {
- vmw_resource_unreference(&tmp);
- goto out_err;
+ ttm_bo_unreserve(&buf->base);
+ goto no_reserve;
}
- arg->shader_handle = ushader->base.hash.key;
-out_err:
- vmw_resource_unreference(&res);
-out_unlock:
- ttm_read_unlock(&vmaster->lock);
-out_bad_arg:
- vmw_dmabuf_unreference(&buffer);
+ memcpy(ttm_kmap_obj_virtual(&map, &is_iomem), bytecode, size);
+ WARN_ON(is_iomem);
+
+ ttm_bo_kunmap(&map);
+ ret = ttm_bo_validate(&buf->base, &vmw_sys_placement, false, true);
+ WARN_ON(ret != 0);
+ ttm_bo_unreserve(&buf->base);
+
+ /* Create a guest-backed shader container backed by the dma buffer */
+ ret = vmw_shader_alloc(man->dev_priv, buf, size, 0, shader_type,
+ tfile, &handle);
+ vmw_dmabuf_unreference(&buf);
+ if (unlikely(ret != 0))
+ goto no_reserve;
+ /*
+ * Create a compat shader structure and stage it for insertion
+ * in the manager
+ */
+ compat = kzalloc(sizeof(*compat), GFP_KERNEL);
+ if (compat == NULL)
+ goto no_compat;
+
+ compat->hash.key = user_key | (shader_type << 24);
+ ret = drm_ht_insert_item(&man->shaders, &compat->hash);
+ if (unlikely(ret != 0))
+ goto out_invalid_key;
+
+ compat->state = VMW_COMPAT_ADD;
+ compat->handle = handle;
+ compat->tfile = tfile;
+ list_add_tail(&compat->head, list);
+ return 0;
+
+out_invalid_key:
+ kfree(compat);
+no_compat:
+ ttm_ref_object_base_unref(tfile, handle, TTM_REF_USAGE);
+no_reserve:
+out:
return ret;
+}
+
+/**
+ * vmw_compat_shader_man_create - Create a compat shader manager
+ *
+ * @dev_priv: Pointer to a device private structure.
+ *
+ * Typically done at file open time. If successful returns a pointer to a
+ * compat shader manager. Otherwise returns an error pointer.
+ */
+struct vmw_compat_shader_manager *
+vmw_compat_shader_man_create(struct vmw_private *dev_priv)
+{
+ struct vmw_compat_shader_manager *man;
+ int ret;
+
+ man = kzalloc(sizeof(*man), GFP_KERNEL);
+
+ man->dev_priv = dev_priv;
+ INIT_LIST_HEAD(&man->list);
+ ret = drm_ht_create(&man->shaders, VMW_COMPAT_SHADER_HT_ORDER);
+ if (ret == 0)
+ return man;
+
+ kfree(man);
+ return ERR_PTR(ret);
+}
+
+/**
+ * vmw_compat_shader_man_destroy - Destroy a compat shader manager
+ *
+ * @man: Pointer to the shader manager to destroy.
+ *
+ * Typically done at file close time.
+ */
+void vmw_compat_shader_man_destroy(struct vmw_compat_shader_manager *man)
+{
+ struct vmw_compat_shader *entry, *next;
+
+ mutex_lock(&man->dev_priv->cmdbuf_mutex);
+ list_for_each_entry_safe(entry, next, &man->list, head)
+ vmw_compat_shader_free(man, entry);
+ mutex_unlock(&man->dev_priv->cmdbuf_mutex);
+ kfree(man);
}
projects / firefly-linux-kernel-4.4.55.git / blobdiff