Thomas Hellstrom | 18e4a46 | 2014-06-09 12:39:22 +0200 | [diff] [blame] | 1 | /************************************************************************** |
| 2 | * |
Sinclair Yeh | 54fbde8 | 2015-07-29 12:38:02 -0700 | [diff] [blame] | 3 | * Copyright © 2014-2015 VMware, Inc., Palo Alto, CA., USA |
Thomas Hellstrom | 18e4a46 | 2014-06-09 12:39:22 +0200 | [diff] [blame] | 4 | * All Rights Reserved. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the |
| 8 | * "Software"), to deal in the Software without restriction, including |
| 9 | * without limitation the rights to use, copy, modify, merge, publish, |
| 10 | * distribute, sub license, and/or sell copies of the Software, and to |
| 11 | * permit persons to whom the Software is furnished to do so, subject to |
| 12 | * the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice (including the |
| 15 | * next paragraph) shall be included in all copies or substantial portions |
| 16 | * of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| 21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| 22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| 23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| 24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 25 | * |
| 26 | **************************************************************************/ |
| 27 | |
| 28 | #include "vmwgfx_drv.h" |
Thomas Hellstrom | d80efd5 | 2015-08-10 10:39:35 -0700 | [diff] [blame] | 29 | #include "vmwgfx_resource_priv.h" |
Thomas Hellstrom | 18e4a46 | 2014-06-09 12:39:22 +0200 | [diff] [blame] | 30 | |
| 31 | #define VMW_CMDBUF_RES_MAN_HT_ORDER 12 |
| 32 | |
Thomas Hellstrom | 18e4a46 | 2014-06-09 12:39:22 +0200 | [diff] [blame] | 33 | /** |
| 34 | * struct vmw_cmdbuf_res - Command buffer managed resource entry. |
| 35 | * |
| 36 | * @res: Refcounted pointer to a struct vmw_resource. |
| 37 | * @hash: Hash entry for the manager hash table. |
| 38 | * @head: List head used either by the staging list or the manager list |
| 39 | * of commited resources. |
| 40 | * @state: Staging state of this resource entry. |
| 41 | * @man: Pointer to a resource manager for this entry. |
| 42 | */ |
| 43 | struct vmw_cmdbuf_res { |
| 44 | struct vmw_resource *res; |
| 45 | struct drm_hash_item hash; |
| 46 | struct list_head head; |
| 47 | enum vmw_cmdbuf_res_state state; |
| 48 | struct vmw_cmdbuf_res_manager *man; |
| 49 | }; |
| 50 | |
| 51 | /** |
| 52 | * struct vmw_cmdbuf_res_manager - Command buffer resource manager. |
| 53 | * |
| 54 | * @resources: Hash table containing staged and commited command buffer |
| 55 | * resources |
| 56 | * @list: List of commited command buffer resources. |
| 57 | * @dev_priv: Pointer to a device private structure. |
| 58 | * |
| 59 | * @resources and @list are protected by the cmdbuf mutex for now. |
| 60 | */ |
| 61 | struct vmw_cmdbuf_res_manager { |
| 62 | struct drm_open_hash resources; |
| 63 | struct list_head list; |
| 64 | struct vmw_private *dev_priv; |
| 65 | }; |
| 66 | |
| 67 | |
| 68 | /** |
| 69 | * vmw_cmdbuf_res_lookup - Look up a command buffer resource |
| 70 | * |
| 71 | * @man: Pointer to the command buffer resource manager |
| 72 | * @resource_type: The resource type, that combined with the user key |
| 73 | * identifies the resource. |
| 74 | * @user_key: The user key. |
| 75 | * |
| 76 | * Returns a valid refcounted struct vmw_resource pointer on success, |
| 77 | * an error pointer on failure. |
| 78 | */ |
| 79 | struct vmw_resource * |
| 80 | vmw_cmdbuf_res_lookup(struct vmw_cmdbuf_res_manager *man, |
| 81 | enum vmw_cmdbuf_res_type res_type, |
| 82 | u32 user_key) |
| 83 | { |
| 84 | struct drm_hash_item *hash; |
| 85 | int ret; |
| 86 | unsigned long key = user_key | (res_type << 24); |
| 87 | |
| 88 | ret = drm_ht_find_item(&man->resources, key, &hash); |
| 89 | if (unlikely(ret != 0)) |
| 90 | return ERR_PTR(ret); |
| 91 | |
| 92 | return vmw_resource_reference |
| 93 | (drm_hash_entry(hash, struct vmw_cmdbuf_res, hash)->res); |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * vmw_cmdbuf_res_free - Free a command buffer resource. |
| 98 | * |
| 99 | * @man: Pointer to the command buffer resource manager |
| 100 | * @entry: Pointer to a struct vmw_cmdbuf_res. |
| 101 | * |
| 102 | * Frees a struct vmw_cmdbuf_res entry and drops its reference to the |
| 103 | * struct vmw_resource. |
| 104 | */ |
| 105 | static void vmw_cmdbuf_res_free(struct vmw_cmdbuf_res_manager *man, |
| 106 | struct vmw_cmdbuf_res *entry) |
| 107 | { |
| 108 | list_del(&entry->head); |
| 109 | WARN_ON(drm_ht_remove_item(&man->resources, &entry->hash)); |
| 110 | vmw_resource_unreference(&entry->res); |
| 111 | kfree(entry); |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * vmw_cmdbuf_res_commit - Commit a list of command buffer resource actions |
| 116 | * |
| 117 | * @list: Caller's list of command buffer resource actions. |
| 118 | * |
| 119 | * This function commits a list of command buffer resource |
| 120 | * additions or removals. |
| 121 | * It is typically called when the execbuf ioctl call triggering these |
| 122 | * actions has commited the fifo contents to the device. |
| 123 | */ |
| 124 | void vmw_cmdbuf_res_commit(struct list_head *list) |
| 125 | { |
| 126 | struct vmw_cmdbuf_res *entry, *next; |
| 127 | |
| 128 | list_for_each_entry_safe(entry, next, list, head) { |
| 129 | list_del(&entry->head); |
Thomas Hellstrom | d80efd5 | 2015-08-10 10:39:35 -0700 | [diff] [blame] | 130 | if (entry->res->func->commit_notify) |
| 131 | entry->res->func->commit_notify(entry->res, |
| 132 | entry->state); |
Thomas Hellstrom | 18e4a46 | 2014-06-09 12:39:22 +0200 | [diff] [blame] | 133 | switch (entry->state) { |
| 134 | case VMW_CMDBUF_RES_ADD: |
Thomas Hellstrom | d80efd5 | 2015-08-10 10:39:35 -0700 | [diff] [blame] | 135 | entry->state = VMW_CMDBUF_RES_COMMITTED; |
Thomas Hellstrom | 18e4a46 | 2014-06-09 12:39:22 +0200 | [diff] [blame] | 136 | list_add_tail(&entry->head, &entry->man->list); |
| 137 | break; |
| 138 | case VMW_CMDBUF_RES_DEL: |
| 139 | vmw_resource_unreference(&entry->res); |
| 140 | kfree(entry); |
| 141 | break; |
| 142 | default: |
| 143 | BUG(); |
| 144 | break; |
| 145 | } |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * vmw_cmdbuf_res_revert - Revert a list of command buffer resource actions |
| 151 | * |
| 152 | * @man: Pointer to the command buffer resource manager |
| 153 | * @list: Caller's list of command buffer resource action |
| 154 | * |
| 155 | * This function reverts a list of command buffer resource |
| 156 | * additions or removals. |
| 157 | * It is typically called when the execbuf ioctl call triggering these |
| 158 | * actions failed for some reason, and the command stream was never |
| 159 | * submitted. |
| 160 | */ |
| 161 | void vmw_cmdbuf_res_revert(struct list_head *list) |
| 162 | { |
| 163 | struct vmw_cmdbuf_res *entry, *next; |
| 164 | int ret; |
| 165 | |
| 166 | list_for_each_entry_safe(entry, next, list, head) { |
| 167 | switch (entry->state) { |
| 168 | case VMW_CMDBUF_RES_ADD: |
| 169 | vmw_cmdbuf_res_free(entry->man, entry); |
| 170 | break; |
| 171 | case VMW_CMDBUF_RES_DEL: |
| 172 | ret = drm_ht_insert_item(&entry->man->resources, |
| 173 | &entry->hash); |
| 174 | list_del(&entry->head); |
| 175 | list_add_tail(&entry->head, &entry->man->list); |
Thomas Hellstrom | d80efd5 | 2015-08-10 10:39:35 -0700 | [diff] [blame] | 176 | entry->state = VMW_CMDBUF_RES_COMMITTED; |
Thomas Hellstrom | 18e4a46 | 2014-06-09 12:39:22 +0200 | [diff] [blame] | 177 | break; |
| 178 | default: |
| 179 | BUG(); |
| 180 | break; |
| 181 | } |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * vmw_cmdbuf_res_add - Stage a command buffer managed resource for addition. |
| 187 | * |
| 188 | * @man: Pointer to the command buffer resource manager. |
| 189 | * @res_type: The resource type. |
| 190 | * @user_key: The user-space id of the resource. |
| 191 | * @res: Valid (refcount != 0) pointer to a struct vmw_resource. |
| 192 | * @list: The staging list. |
| 193 | * |
| 194 | * This function allocates a struct vmw_cmdbuf_res entry and adds the |
| 195 | * resource to the hash table of the manager identified by @man. The |
| 196 | * entry is then put on the staging list identified by @list. |
| 197 | */ |
| 198 | int vmw_cmdbuf_res_add(struct vmw_cmdbuf_res_manager *man, |
| 199 | enum vmw_cmdbuf_res_type res_type, |
| 200 | u32 user_key, |
| 201 | struct vmw_resource *res, |
| 202 | struct list_head *list) |
| 203 | { |
| 204 | struct vmw_cmdbuf_res *cres; |
| 205 | int ret; |
| 206 | |
| 207 | cres = kzalloc(sizeof(*cres), GFP_KERNEL); |
| 208 | if (unlikely(cres == NULL)) |
| 209 | return -ENOMEM; |
| 210 | |
| 211 | cres->hash.key = user_key | (res_type << 24); |
| 212 | ret = drm_ht_insert_item(&man->resources, &cres->hash); |
| 213 | if (unlikely(ret != 0)) |
| 214 | goto out_invalid_key; |
| 215 | |
| 216 | cres->state = VMW_CMDBUF_RES_ADD; |
| 217 | cres->res = vmw_resource_reference(res); |
| 218 | cres->man = man; |
| 219 | list_add_tail(&cres->head, list); |
| 220 | |
| 221 | out_invalid_key: |
| 222 | return ret; |
| 223 | } |
| 224 | |
| 225 | /** |
| 226 | * vmw_cmdbuf_res_remove - Stage a command buffer managed resource for removal. |
| 227 | * |
| 228 | * @man: Pointer to the command buffer resource manager. |
| 229 | * @res_type: The resource type. |
| 230 | * @user_key: The user-space id of the resource. |
| 231 | * @list: The staging list. |
Thomas Hellstrom | d80efd5 | 2015-08-10 10:39:35 -0700 | [diff] [blame] | 232 | * @res_p: If the resource is in an already committed state, points to the |
| 233 | * struct vmw_resource on successful return. The pointer will be |
| 234 | * non ref-counted. |
Thomas Hellstrom | 18e4a46 | 2014-06-09 12:39:22 +0200 | [diff] [blame] | 235 | * |
| 236 | * This function looks up the struct vmw_cmdbuf_res entry from the manager |
| 237 | * hash table and, if it exists, removes it. Depending on its current staging |
| 238 | * state it then either removes the entry from the staging list or adds it |
| 239 | * to it with a staging state of removal. |
| 240 | */ |
| 241 | int vmw_cmdbuf_res_remove(struct vmw_cmdbuf_res_manager *man, |
| 242 | enum vmw_cmdbuf_res_type res_type, |
| 243 | u32 user_key, |
Thomas Hellstrom | d80efd5 | 2015-08-10 10:39:35 -0700 | [diff] [blame] | 244 | struct list_head *list, |
| 245 | struct vmw_resource **res_p) |
Thomas Hellstrom | 18e4a46 | 2014-06-09 12:39:22 +0200 | [diff] [blame] | 246 | { |
| 247 | struct vmw_cmdbuf_res *entry; |
| 248 | struct drm_hash_item *hash; |
| 249 | int ret; |
| 250 | |
Thomas Hellstrom | 0468ab5b7 | 2014-10-31 09:54:22 +0100 | [diff] [blame] | 251 | ret = drm_ht_find_item(&man->resources, user_key | (res_type << 24), |
| 252 | &hash); |
Thomas Hellstrom | 18e4a46 | 2014-06-09 12:39:22 +0200 | [diff] [blame] | 253 | if (likely(ret != 0)) |
| 254 | return -EINVAL; |
| 255 | |
| 256 | entry = drm_hash_entry(hash, struct vmw_cmdbuf_res, hash); |
| 257 | |
| 258 | switch (entry->state) { |
| 259 | case VMW_CMDBUF_RES_ADD: |
| 260 | vmw_cmdbuf_res_free(man, entry); |
Thomas Hellstrom | d80efd5 | 2015-08-10 10:39:35 -0700 | [diff] [blame] | 261 | *res_p = NULL; |
Thomas Hellstrom | 18e4a46 | 2014-06-09 12:39:22 +0200 | [diff] [blame] | 262 | break; |
Thomas Hellstrom | d80efd5 | 2015-08-10 10:39:35 -0700 | [diff] [blame] | 263 | case VMW_CMDBUF_RES_COMMITTED: |
Thomas Hellstrom | 18e4a46 | 2014-06-09 12:39:22 +0200 | [diff] [blame] | 264 | (void) drm_ht_remove_item(&man->resources, &entry->hash); |
| 265 | list_del(&entry->head); |
| 266 | entry->state = VMW_CMDBUF_RES_DEL; |
| 267 | list_add_tail(&entry->head, list); |
Thomas Hellstrom | d80efd5 | 2015-08-10 10:39:35 -0700 | [diff] [blame] | 268 | *res_p = entry->res; |
Thomas Hellstrom | 18e4a46 | 2014-06-09 12:39:22 +0200 | [diff] [blame] | 269 | break; |
| 270 | default: |
| 271 | BUG(); |
| 272 | break; |
| 273 | } |
| 274 | |
| 275 | return 0; |
| 276 | } |
| 277 | |
| 278 | /** |
| 279 | * vmw_cmdbuf_res_man_create - Allocate a command buffer managed resource |
| 280 | * manager. |
| 281 | * |
| 282 | * @dev_priv: Pointer to a struct vmw_private |
| 283 | * |
| 284 | * Allocates and initializes a command buffer managed resource manager. Returns |
| 285 | * an error pointer on failure. |
| 286 | */ |
| 287 | struct vmw_cmdbuf_res_manager * |
| 288 | vmw_cmdbuf_res_man_create(struct vmw_private *dev_priv) |
| 289 | { |
| 290 | struct vmw_cmdbuf_res_manager *man; |
| 291 | int ret; |
| 292 | |
| 293 | man = kzalloc(sizeof(*man), GFP_KERNEL); |
| 294 | if (man == NULL) |
| 295 | return ERR_PTR(-ENOMEM); |
| 296 | |
| 297 | man->dev_priv = dev_priv; |
| 298 | INIT_LIST_HEAD(&man->list); |
| 299 | ret = drm_ht_create(&man->resources, VMW_CMDBUF_RES_MAN_HT_ORDER); |
| 300 | if (ret == 0) |
| 301 | return man; |
| 302 | |
| 303 | kfree(man); |
| 304 | return ERR_PTR(ret); |
| 305 | } |
| 306 | |
| 307 | /** |
| 308 | * vmw_cmdbuf_res_man_destroy - Destroy a command buffer managed resource |
| 309 | * manager. |
| 310 | * |
| 311 | * @man: Pointer to the manager to destroy. |
| 312 | * |
| 313 | * This function destroys a command buffer managed resource manager and |
| 314 | * unreferences / frees all command buffer managed resources and -entries |
| 315 | * associated with it. |
| 316 | */ |
| 317 | void vmw_cmdbuf_res_man_destroy(struct vmw_cmdbuf_res_manager *man) |
| 318 | { |
| 319 | struct vmw_cmdbuf_res *entry, *next; |
| 320 | |
| 321 | list_for_each_entry_safe(entry, next, &man->list, head) |
| 322 | vmw_cmdbuf_res_free(man, entry); |
| 323 | |
| 324 | kfree(man); |
| 325 | } |
| 326 | |
| 327 | /** |
| 328 | * |
| 329 | * vmw_cmdbuf_res_man_size - Return the size of a command buffer managed |
| 330 | * resource manager |
| 331 | * |
| 332 | * Returns the approximate allocation size of a command buffer managed |
| 333 | * resource manager. |
| 334 | */ |
| 335 | size_t vmw_cmdbuf_res_man_size(void) |
| 336 | { |
| 337 | static size_t res_man_size; |
| 338 | |
| 339 | if (unlikely(res_man_size == 0)) |
| 340 | res_man_size = |
| 341 | ttm_round_pot(sizeof(struct vmw_cmdbuf_res_manager)) + |
| 342 | ttm_round_pot(sizeof(struct hlist_head) << |
| 343 | VMW_CMDBUF_RES_MAN_HT_ORDER); |
| 344 | |
| 345 | return res_man_size; |
| 346 | } |