diff options
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c | 103 |
1 files changed, 36 insertions, 67 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c index 36c7b6c839c0..47bc0b411055 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c @@ -1,7 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT /************************************************************************** * - * Copyright © 2014-2015 VMware, Inc., Palo Alto, CA., USA - * All Rights Reserved. + * Copyright 2014-2022 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 @@ -28,6 +28,8 @@ #include "vmwgfx_drv.h" #include "vmwgfx_resource_priv.h" +#include <linux/hashtable.h> + #define VMW_CMDBUF_RES_MAN_HT_ORDER 12 /** @@ -36,13 +38,13 @@ * @res: Refcounted pointer to a struct vmw_resource. * @hash: Hash entry for the manager hash table. * @head: List head used either by the staging list or the manager list - * of commited resources. + * of committed resources. * @state: Staging state of this resource entry. * @man: Pointer to a resource manager for this entry. */ struct vmw_cmdbuf_res { struct vmw_resource *res; - struct drm_hash_item hash; + struct vmwgfx_hash_item hash; struct list_head head; enum vmw_cmdbuf_res_state state; struct vmw_cmdbuf_res_manager *man; @@ -51,15 +53,15 @@ struct vmw_cmdbuf_res { /** * struct vmw_cmdbuf_res_manager - Command buffer resource manager. * - * @resources: Hash table containing staged and commited command buffer + * @resources: Hash table containing staged and committed command buffer * resources - * @list: List of commited command buffer resources. + * @list: List of committed command buffer resources. * @dev_priv: Pointer to a device private structure. * * @resources and @list are protected by the cmdbuf mutex for now. */ struct vmw_cmdbuf_res_manager { - struct drm_open_hash resources; + DECLARE_HASHTABLE(resources, VMW_CMDBUF_RES_MAN_HT_ORDER); struct list_head list; struct vmw_private *dev_priv; }; @@ -69,7 +71,7 @@ struct vmw_cmdbuf_res_manager { * vmw_cmdbuf_res_lookup - Look up a command buffer resource * * @man: Pointer to the command buffer resource manager - * @resource_type: The resource type, that combined with the user key + * @res_type: The resource type, that combined with the user key * identifies the resource. * @user_key: The user key. * @@ -81,16 +83,14 @@ vmw_cmdbuf_res_lookup(struct vmw_cmdbuf_res_manager *man, enum vmw_cmdbuf_res_type res_type, u32 user_key) { - struct drm_hash_item *hash; - int ret; + struct vmwgfx_hash_item *hash; unsigned long key = user_key | (res_type << 24); - ret = drm_ht_find_item(&man->resources, key, &hash); - if (unlikely(ret != 0)) - return ERR_PTR(ret); - - return vmw_resource_reference - (drm_hash_entry(hash, struct vmw_cmdbuf_res, hash)->res); + hash_for_each_possible_rcu(man->resources, hash, head, key) { + if (hash->key == key) + return hlist_entry(hash, struct vmw_cmdbuf_res, hash)->res; + } + return ERR_PTR(-EINVAL); } /** @@ -106,7 +106,7 @@ static void vmw_cmdbuf_res_free(struct vmw_cmdbuf_res_manager *man, struct vmw_cmdbuf_res *entry) { list_del(&entry->head); - WARN_ON(drm_ht_remove_item(&man->resources, &entry->hash)); + hash_del_rcu(&entry->hash.head); vmw_resource_unreference(&entry->res); kfree(entry); } @@ -119,7 +119,7 @@ static void vmw_cmdbuf_res_free(struct vmw_cmdbuf_res_manager *man, * This function commits a list of command buffer resource * additions or removals. * It is typically called when the execbuf ioctl call triggering these - * actions has commited the fifo contents to the device. + * actions has committed the fifo contents to the device. */ void vmw_cmdbuf_res_commit(struct list_head *list) { @@ -149,7 +149,6 @@ void vmw_cmdbuf_res_commit(struct list_head *list) /** * vmw_cmdbuf_res_revert - Revert a list of command buffer resource actions * - * @man: Pointer to the command buffer resource manager * @list: Caller's list of command buffer resource action * * This function reverts a list of command buffer resource @@ -161,7 +160,6 @@ void vmw_cmdbuf_res_commit(struct list_head *list) void vmw_cmdbuf_res_revert(struct list_head *list) { struct vmw_cmdbuf_res *entry, *next; - int ret; list_for_each_entry_safe(entry, next, list, head) { switch (entry->state) { @@ -169,10 +167,9 @@ void vmw_cmdbuf_res_revert(struct list_head *list) vmw_cmdbuf_res_free(entry->man, entry); break; case VMW_CMDBUF_RES_DEL: - ret = drm_ht_insert_item(&entry->man->resources, - &entry->hash); - list_del(&entry->head); - list_add_tail(&entry->head, &entry->man->list); + hash_add_rcu(entry->man->resources, &entry->hash.head, + entry->hash.key); + list_move_tail(&entry->head, &entry->man->list); entry->state = VMW_CMDBUF_RES_COMMITTED; break; default: @@ -202,24 +199,20 @@ int vmw_cmdbuf_res_add(struct vmw_cmdbuf_res_manager *man, struct list_head *list) { struct vmw_cmdbuf_res *cres; - int ret; cres = kzalloc(sizeof(*cres), GFP_KERNEL); if (unlikely(!cres)) return -ENOMEM; cres->hash.key = user_key | (res_type << 24); - ret = drm_ht_insert_item(&man->resources, &cres->hash); - if (unlikely(ret != 0)) - goto out_invalid_key; + hash_add_rcu(man->resources, &cres->hash.head, cres->hash.key); cres->state = VMW_CMDBUF_RES_ADD; cres->res = vmw_resource_reference(res); cres->man = man; list_add_tail(&cres->head, list); -out_invalid_key: - return ret; + return 0; } /** @@ -244,24 +237,26 @@ int vmw_cmdbuf_res_remove(struct vmw_cmdbuf_res_manager *man, struct list_head *list, struct vmw_resource **res_p) { - struct vmw_cmdbuf_res *entry; - struct drm_hash_item *hash; - int ret; + struct vmw_cmdbuf_res *entry = NULL; + struct vmwgfx_hash_item *hash; + unsigned long key = user_key | (res_type << 24); - ret = drm_ht_find_item(&man->resources, user_key | (res_type << 24), - &hash); - if (likely(ret != 0)) + hash_for_each_possible_rcu(man->resources, hash, head, key) { + if (hash->key == key) { + entry = hlist_entry(hash, struct vmw_cmdbuf_res, hash); + break; + } + } + if (unlikely(!entry)) return -EINVAL; - entry = drm_hash_entry(hash, struct vmw_cmdbuf_res, hash); - switch (entry->state) { case VMW_CMDBUF_RES_ADD: vmw_cmdbuf_res_free(man, entry); *res_p = NULL; break; case VMW_CMDBUF_RES_COMMITTED: - (void) drm_ht_remove_item(&man->resources, &entry->hash); + hash_del_rcu(&entry->hash.head); list_del(&entry->head); entry->state = VMW_CMDBUF_RES_DEL; list_add_tail(&entry->head, list); @@ -288,7 +283,6 @@ struct vmw_cmdbuf_res_manager * vmw_cmdbuf_res_man_create(struct vmw_private *dev_priv) { struct vmw_cmdbuf_res_manager *man; - int ret; man = kzalloc(sizeof(*man), GFP_KERNEL); if (!man) @@ -296,12 +290,8 @@ vmw_cmdbuf_res_man_create(struct vmw_private *dev_priv) man->dev_priv = dev_priv; INIT_LIST_HEAD(&man->list); - ret = drm_ht_create(&man->resources, VMW_CMDBUF_RES_MAN_HT_ORDER); - if (ret == 0) - return man; - - kfree(man); - return ERR_PTR(ret); + hash_init(man->resources); + return man; } /** @@ -321,27 +311,6 @@ void vmw_cmdbuf_res_man_destroy(struct vmw_cmdbuf_res_manager *man) list_for_each_entry_safe(entry, next, &man->list, head) vmw_cmdbuf_res_free(man, entry); - drm_ht_remove(&man->resources); kfree(man); } -/** - * - * vmw_cmdbuf_res_man_size - Return the size of a command buffer managed - * resource manager - * - * Returns the approximate allocation size of a command buffer managed - * resource manager. - */ -size_t vmw_cmdbuf_res_man_size(void) -{ - static size_t res_man_size; - - if (unlikely(res_man_size == 0)) - res_man_size = - ttm_round_pot(sizeof(struct vmw_cmdbuf_res_manager)) + - ttm_round_pot(sizeof(struct hlist_head) << - VMW_CMDBUF_RES_MAN_HT_ORDER); - - return res_man_size; -} |