Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 1 | /************************************************************************** |
| 2 | * |
Sinclair Yeh | 54fbde8 | 2015-07-29 12:38:02 -0700 | [diff] [blame] | 3 | * Copyright © 2011-2014 VMware, Inc., Palo Alto, CA., USA |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [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 | |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 28 | #include <drm/drmP.h> |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 29 | #include "vmwgfx_drv.h" |
| 30 | |
| 31 | #define VMW_FENCE_WRAP (1 << 31) |
| 32 | |
| 33 | struct vmw_fence_manager { |
| 34 | int num_fence_objects; |
| 35 | struct vmw_private *dev_priv; |
| 36 | spinlock_t lock; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 37 | struct list_head fence_list; |
Thomas Hellstrom | 496eb6f | 2015-01-14 02:33:39 -0800 | [diff] [blame] | 38 | struct work_struct work; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 39 | u32 user_fence_size; |
| 40 | u32 fence_size; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 41 | u32 event_fence_action_size; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 42 | bool fifo_down; |
| 43 | struct list_head cleanup_list; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 44 | uint32_t pending_actions[VMW_ACTION_MAX]; |
| 45 | struct mutex goal_irq_mutex; |
| 46 | bool goal_irq_on; /* Protected by @goal_irq_mutex */ |
| 47 | bool seqno_valid; /* Protected by @lock, and may not be set to true |
| 48 | without the @goal_irq_mutex held. */ |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 49 | unsigned ctx; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 50 | }; |
| 51 | |
| 52 | struct vmw_user_fence { |
| 53 | struct ttm_base_object base; |
| 54 | struct vmw_fence_obj fence; |
| 55 | }; |
| 56 | |
| 57 | /** |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 58 | * struct vmw_event_fence_action - fence action that delivers a drm event. |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 59 | * |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 60 | * @e: A struct drm_pending_event that controls the event delivery. |
| 61 | * @action: A struct vmw_fence_action to hook up to a fence. |
| 62 | * @fence: A referenced pointer to the fence to keep it alive while @action |
| 63 | * hangs on it. |
| 64 | * @dev: Pointer to a struct drm_device so we can access the event stuff. |
| 65 | * @kref: Both @e and @action has destructors, so we need to refcount. |
| 66 | * @size: Size accounted for this object. |
| 67 | * @tv_sec: If non-null, the variable pointed to will be assigned |
| 68 | * current time tv_sec val when the fence signals. |
| 69 | * @tv_usec: Must be set if @tv_sec is set, and the variable pointed to will |
| 70 | * be assigned the current time tv_usec val when the fence signals. |
| 71 | */ |
| 72 | struct vmw_event_fence_action { |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 73 | struct vmw_fence_action action; |
Thomas Hellstrom | 6b82ef5 | 2012-02-09 16:56:42 +0100 | [diff] [blame] | 74 | struct list_head fpriv_head; |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 75 | |
| 76 | struct drm_pending_event *event; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 77 | struct vmw_fence_obj *fence; |
| 78 | struct drm_device *dev; |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 79 | |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 80 | uint32_t *tv_sec; |
| 81 | uint32_t *tv_usec; |
| 82 | }; |
| 83 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 84 | static struct vmw_fence_manager * |
| 85 | fman_from_fence(struct vmw_fence_obj *fence) |
| 86 | { |
| 87 | return container_of(fence->base.lock, struct vmw_fence_manager, lock); |
| 88 | } |
| 89 | |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 90 | /** |
| 91 | * Note on fencing subsystem usage of irqs: |
| 92 | * Typically the vmw_fences_update function is called |
| 93 | * |
| 94 | * a) When a new fence seqno has been submitted by the fifo code. |
| 95 | * b) On-demand when we have waiters. Sleeping waiters will switch on the |
| 96 | * ANY_FENCE irq and call vmw_fences_update function each time an ANY_FENCE |
| 97 | * irq is received. When the last fence waiter is gone, that IRQ is masked |
| 98 | * away. |
| 99 | * |
| 100 | * In situations where there are no waiters and we don't submit any new fences, |
| 101 | * fence objects may not be signaled. This is perfectly OK, since there are |
| 102 | * no consumers of the signaled data, but that is NOT ok when there are fence |
| 103 | * actions attached to a fence. The fencing subsystem then makes use of the |
| 104 | * FENCE_GOAL irq and sets the fence goal seqno to that of the next fence |
| 105 | * which has an action attached, and each time vmw_fences_update is called, |
| 106 | * the subsystem makes sure the fence goal seqno is updated. |
| 107 | * |
| 108 | * The fence goal seqno irq is on as long as there are unsignaled fence |
| 109 | * objects with actions attached to them. |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 110 | */ |
| 111 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 112 | static void vmw_fence_obj_destroy(struct fence *f) |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 113 | { |
| 114 | struct vmw_fence_obj *fence = |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 115 | container_of(f, struct vmw_fence_obj, base); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 116 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 117 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
| 118 | unsigned long irq_flags; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 119 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 120 | spin_lock_irqsave(&fman->lock, irq_flags); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 121 | list_del_init(&fence->head); |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 122 | --fman->num_fence_objects; |
| 123 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
| 124 | fence->destroy(fence); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 125 | } |
| 126 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 127 | static const char *vmw_fence_get_driver_name(struct fence *f) |
| 128 | { |
| 129 | return "vmwgfx"; |
| 130 | } |
| 131 | |
| 132 | static const char *vmw_fence_get_timeline_name(struct fence *f) |
| 133 | { |
| 134 | return "svga"; |
| 135 | } |
| 136 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 137 | static bool vmw_fence_enable_signaling(struct fence *f) |
| 138 | { |
| 139 | struct vmw_fence_obj *fence = |
| 140 | container_of(f, struct vmw_fence_obj, base); |
| 141 | |
| 142 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
| 143 | struct vmw_private *dev_priv = fman->dev_priv; |
| 144 | |
Thomas Hellstrom | b76ff5e | 2015-10-28 10:44:04 +0100 | [diff] [blame] | 145 | u32 *fifo_mem = dev_priv->mmio_virt; |
| 146 | u32 seqno = vmw_mmio_read(fifo_mem + SVGA_FIFO_FENCE); |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 147 | if (seqno - fence->base.seqno < VMW_FENCE_WRAP) |
| 148 | return false; |
| 149 | |
Thomas Hellstrom | 496eb6f | 2015-01-14 02:33:39 -0800 | [diff] [blame] | 150 | vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 151 | |
| 152 | return true; |
| 153 | } |
| 154 | |
| 155 | struct vmwgfx_wait_cb { |
| 156 | struct fence_cb base; |
| 157 | struct task_struct *task; |
| 158 | }; |
| 159 | |
| 160 | static void |
| 161 | vmwgfx_wait_cb(struct fence *fence, struct fence_cb *cb) |
| 162 | { |
| 163 | struct vmwgfx_wait_cb *wait = |
| 164 | container_of(cb, struct vmwgfx_wait_cb, base); |
| 165 | |
| 166 | wake_up_process(wait->task); |
| 167 | } |
| 168 | |
| 169 | static void __vmw_fences_update(struct vmw_fence_manager *fman); |
| 170 | |
| 171 | static long vmw_fence_wait(struct fence *f, bool intr, signed long timeout) |
| 172 | { |
| 173 | struct vmw_fence_obj *fence = |
| 174 | container_of(f, struct vmw_fence_obj, base); |
| 175 | |
| 176 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
| 177 | struct vmw_private *dev_priv = fman->dev_priv; |
| 178 | struct vmwgfx_wait_cb cb; |
| 179 | long ret = timeout; |
| 180 | unsigned long irq_flags; |
| 181 | |
| 182 | if (likely(vmw_fence_obj_signaled(fence))) |
| 183 | return timeout; |
| 184 | |
| 185 | vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); |
| 186 | vmw_seqno_waiter_add(dev_priv); |
| 187 | |
| 188 | spin_lock_irqsave(f->lock, irq_flags); |
| 189 | |
| 190 | if (intr && signal_pending(current)) { |
| 191 | ret = -ERESTARTSYS; |
| 192 | goto out; |
| 193 | } |
| 194 | |
| 195 | cb.base.func = vmwgfx_wait_cb; |
| 196 | cb.task = current; |
| 197 | list_add(&cb.base.node, &f->cb_list); |
| 198 | |
| 199 | while (ret > 0) { |
| 200 | __vmw_fences_update(fman); |
| 201 | if (test_bit(FENCE_FLAG_SIGNALED_BIT, &f->flags)) |
| 202 | break; |
| 203 | |
| 204 | if (intr) |
| 205 | __set_current_state(TASK_INTERRUPTIBLE); |
| 206 | else |
| 207 | __set_current_state(TASK_UNINTERRUPTIBLE); |
| 208 | spin_unlock_irqrestore(f->lock, irq_flags); |
| 209 | |
| 210 | ret = schedule_timeout(ret); |
| 211 | |
| 212 | spin_lock_irqsave(f->lock, irq_flags); |
| 213 | if (ret > 0 && intr && signal_pending(current)) |
| 214 | ret = -ERESTARTSYS; |
| 215 | } |
| 216 | |
| 217 | if (!list_empty(&cb.base.node)) |
| 218 | list_del(&cb.base.node); |
| 219 | __set_current_state(TASK_RUNNING); |
| 220 | |
| 221 | out: |
| 222 | spin_unlock_irqrestore(f->lock, irq_flags); |
| 223 | |
| 224 | vmw_seqno_waiter_remove(dev_priv); |
| 225 | |
| 226 | return ret; |
| 227 | } |
| 228 | |
| 229 | static struct fence_ops vmw_fence_ops = { |
| 230 | .get_driver_name = vmw_fence_get_driver_name, |
| 231 | .get_timeline_name = vmw_fence_get_timeline_name, |
| 232 | .enable_signaling = vmw_fence_enable_signaling, |
| 233 | .wait = vmw_fence_wait, |
| 234 | .release = vmw_fence_obj_destroy, |
| 235 | }; |
| 236 | |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 237 | |
| 238 | /** |
| 239 | * Execute signal actions on fences recently signaled. |
| 240 | * This is done from a workqueue so we don't have to execute |
| 241 | * signal actions from atomic context. |
| 242 | */ |
| 243 | |
| 244 | static void vmw_fence_work_func(struct work_struct *work) |
| 245 | { |
| 246 | struct vmw_fence_manager *fman = |
| 247 | container_of(work, struct vmw_fence_manager, work); |
| 248 | struct list_head list; |
| 249 | struct vmw_fence_action *action, *next_action; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 250 | bool seqno_valid; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 251 | |
| 252 | do { |
| 253 | INIT_LIST_HEAD(&list); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 254 | mutex_lock(&fman->goal_irq_mutex); |
| 255 | |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 256 | spin_lock_irq(&fman->lock); |
| 257 | list_splice_init(&fman->cleanup_list, &list); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 258 | seqno_valid = fman->seqno_valid; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 259 | spin_unlock_irq(&fman->lock); |
| 260 | |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 261 | if (!seqno_valid && fman->goal_irq_on) { |
| 262 | fman->goal_irq_on = false; |
| 263 | vmw_goal_waiter_remove(fman->dev_priv); |
| 264 | } |
| 265 | mutex_unlock(&fman->goal_irq_mutex); |
| 266 | |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 267 | if (list_empty(&list)) |
| 268 | return; |
| 269 | |
| 270 | /* |
| 271 | * At this point, only we should be able to manipulate the |
| 272 | * list heads of the actions we have on the private list. |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 273 | * hence fman::lock not held. |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 274 | */ |
| 275 | |
| 276 | list_for_each_entry_safe(action, next_action, &list, head) { |
| 277 | list_del_init(&action->head); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 278 | if (action->cleanup) |
| 279 | action->cleanup(action); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 280 | } |
| 281 | } while (1); |
| 282 | } |
| 283 | |
| 284 | struct vmw_fence_manager *vmw_fence_manager_init(struct vmw_private *dev_priv) |
| 285 | { |
| 286 | struct vmw_fence_manager *fman = kzalloc(sizeof(*fman), GFP_KERNEL); |
| 287 | |
| 288 | if (unlikely(fman == NULL)) |
| 289 | return NULL; |
| 290 | |
| 291 | fman->dev_priv = dev_priv; |
| 292 | spin_lock_init(&fman->lock); |
| 293 | INIT_LIST_HEAD(&fman->fence_list); |
| 294 | INIT_LIST_HEAD(&fman->cleanup_list); |
| 295 | INIT_WORK(&fman->work, &vmw_fence_work_func); |
| 296 | fman->fifo_down = true; |
| 297 | fman->user_fence_size = ttm_round_pot(sizeof(struct vmw_user_fence)); |
| 298 | fman->fence_size = ttm_round_pot(sizeof(struct vmw_fence_obj)); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 299 | fman->event_fence_action_size = |
| 300 | ttm_round_pot(sizeof(struct vmw_event_fence_action)); |
| 301 | mutex_init(&fman->goal_irq_mutex); |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 302 | fman->ctx = fence_context_alloc(1); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 303 | |
| 304 | return fman; |
| 305 | } |
| 306 | |
| 307 | void vmw_fence_manager_takedown(struct vmw_fence_manager *fman) |
| 308 | { |
| 309 | unsigned long irq_flags; |
| 310 | bool lists_empty; |
| 311 | |
| 312 | (void) cancel_work_sync(&fman->work); |
| 313 | |
| 314 | spin_lock_irqsave(&fman->lock, irq_flags); |
| 315 | lists_empty = list_empty(&fman->fence_list) && |
| 316 | list_empty(&fman->cleanup_list); |
| 317 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
| 318 | |
| 319 | BUG_ON(!lists_empty); |
| 320 | kfree(fman); |
| 321 | } |
| 322 | |
| 323 | static int vmw_fence_obj_init(struct vmw_fence_manager *fman, |
Maarten Lankhorst | c060a4e | 2014-03-26 13:06:24 +0100 | [diff] [blame] | 324 | struct vmw_fence_obj *fence, u32 seqno, |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 325 | void (*destroy) (struct vmw_fence_obj *fence)) |
| 326 | { |
| 327 | unsigned long irq_flags; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 328 | int ret = 0; |
| 329 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 330 | fence_init(&fence->base, &vmw_fence_ops, &fman->lock, |
| 331 | fman->ctx, seqno); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 332 | INIT_LIST_HEAD(&fence->seq_passed_actions); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 333 | fence->destroy = destroy; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 334 | |
| 335 | spin_lock_irqsave(&fman->lock, irq_flags); |
| 336 | if (unlikely(fman->fifo_down)) { |
| 337 | ret = -EBUSY; |
| 338 | goto out_unlock; |
| 339 | } |
| 340 | list_add_tail(&fence->head, &fman->fence_list); |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 341 | ++fman->num_fence_objects; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 342 | |
| 343 | out_unlock: |
| 344 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
| 345 | return ret; |
| 346 | |
| 347 | } |
| 348 | |
Rashika Kheria | 94844cf | 2014-01-06 22:21:21 +0530 | [diff] [blame] | 349 | static void vmw_fences_perform_actions(struct vmw_fence_manager *fman, |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 350 | struct list_head *list) |
| 351 | { |
| 352 | struct vmw_fence_action *action, *next_action; |
| 353 | |
| 354 | list_for_each_entry_safe(action, next_action, list, head) { |
| 355 | list_del_init(&action->head); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 356 | fman->pending_actions[action->type]--; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 357 | if (action->seq_passed != NULL) |
| 358 | action->seq_passed(action); |
| 359 | |
| 360 | /* |
| 361 | * Add the cleanup action to the cleanup list so that |
| 362 | * it will be performed by a worker task. |
| 363 | */ |
| 364 | |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 365 | list_add_tail(&action->head, &fman->cleanup_list); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 366 | } |
| 367 | } |
| 368 | |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 369 | /** |
| 370 | * vmw_fence_goal_new_locked - Figure out a new device fence goal |
| 371 | * seqno if needed. |
| 372 | * |
| 373 | * @fman: Pointer to a fence manager. |
| 374 | * @passed_seqno: The seqno the device currently signals as passed. |
| 375 | * |
| 376 | * This function should be called with the fence manager lock held. |
| 377 | * It is typically called when we have a new passed_seqno, and |
| 378 | * we might need to update the fence goal. It checks to see whether |
| 379 | * the current fence goal has already passed, and, in that case, |
| 380 | * scans through all unsignaled fences to get the next fence object with an |
| 381 | * action attached, and sets the seqno of that fence as a new fence goal. |
| 382 | * |
| 383 | * returns true if the device goal seqno was updated. False otherwise. |
| 384 | */ |
| 385 | static bool vmw_fence_goal_new_locked(struct vmw_fence_manager *fman, |
| 386 | u32 passed_seqno) |
| 387 | { |
| 388 | u32 goal_seqno; |
Thomas Hellstrom | b76ff5e | 2015-10-28 10:44:04 +0100 | [diff] [blame] | 389 | u32 *fifo_mem; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 390 | struct vmw_fence_obj *fence; |
| 391 | |
| 392 | if (likely(!fman->seqno_valid)) |
| 393 | return false; |
| 394 | |
| 395 | fifo_mem = fman->dev_priv->mmio_virt; |
Thomas Hellstrom | b76ff5e | 2015-10-28 10:44:04 +0100 | [diff] [blame] | 396 | goal_seqno = vmw_mmio_read(fifo_mem + SVGA_FIFO_FENCE_GOAL); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 397 | if (likely(passed_seqno - goal_seqno >= VMW_FENCE_WRAP)) |
| 398 | return false; |
| 399 | |
| 400 | fman->seqno_valid = false; |
| 401 | list_for_each_entry(fence, &fman->fence_list, head) { |
| 402 | if (!list_empty(&fence->seq_passed_actions)) { |
| 403 | fman->seqno_valid = true; |
Thomas Hellstrom | b76ff5e | 2015-10-28 10:44:04 +0100 | [diff] [blame] | 404 | vmw_mmio_write(fence->base.seqno, |
| 405 | fifo_mem + SVGA_FIFO_FENCE_GOAL); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 406 | break; |
| 407 | } |
| 408 | } |
| 409 | |
| 410 | return true; |
| 411 | } |
| 412 | |
| 413 | |
| 414 | /** |
| 415 | * vmw_fence_goal_check_locked - Replace the device fence goal seqno if |
| 416 | * needed. |
| 417 | * |
| 418 | * @fence: Pointer to a struct vmw_fence_obj the seqno of which should be |
| 419 | * considered as a device fence goal. |
| 420 | * |
| 421 | * This function should be called with the fence manager lock held. |
| 422 | * It is typically called when an action has been attached to a fence to |
| 423 | * check whether the seqno of that fence should be used for a fence |
| 424 | * goal interrupt. This is typically needed if the current fence goal is |
| 425 | * invalid, or has a higher seqno than that of the current fence object. |
| 426 | * |
| 427 | * returns true if the device goal seqno was updated. False otherwise. |
| 428 | */ |
| 429 | static bool vmw_fence_goal_check_locked(struct vmw_fence_obj *fence) |
| 430 | { |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 431 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 432 | u32 goal_seqno; |
Thomas Hellstrom | b76ff5e | 2015-10-28 10:44:04 +0100 | [diff] [blame] | 433 | u32 *fifo_mem; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 434 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 435 | if (fence_is_signaled_locked(&fence->base)) |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 436 | return false; |
| 437 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 438 | fifo_mem = fman->dev_priv->mmio_virt; |
Thomas Hellstrom | b76ff5e | 2015-10-28 10:44:04 +0100 | [diff] [blame] | 439 | goal_seqno = vmw_mmio_read(fifo_mem + SVGA_FIFO_FENCE_GOAL); |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 440 | if (likely(fman->seqno_valid && |
| 441 | goal_seqno - fence->base.seqno < VMW_FENCE_WRAP)) |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 442 | return false; |
| 443 | |
Thomas Hellstrom | b76ff5e | 2015-10-28 10:44:04 +0100 | [diff] [blame] | 444 | vmw_mmio_write(fence->base.seqno, fifo_mem + SVGA_FIFO_FENCE_GOAL); |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 445 | fman->seqno_valid = true; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 446 | |
| 447 | return true; |
| 448 | } |
| 449 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 450 | static void __vmw_fences_update(struct vmw_fence_manager *fman) |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 451 | { |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 452 | struct vmw_fence_obj *fence, *next_fence; |
| 453 | struct list_head action_list; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 454 | bool needs_rerun; |
| 455 | uint32_t seqno, new_seqno; |
Thomas Hellstrom | b76ff5e | 2015-10-28 10:44:04 +0100 | [diff] [blame] | 456 | u32 *fifo_mem = fman->dev_priv->mmio_virt; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 457 | |
Thomas Hellstrom | b76ff5e | 2015-10-28 10:44:04 +0100 | [diff] [blame] | 458 | seqno = vmw_mmio_read(fifo_mem + SVGA_FIFO_FENCE); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 459 | rerun: |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 460 | list_for_each_entry_safe(fence, next_fence, &fman->fence_list, head) { |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 461 | if (seqno - fence->base.seqno < VMW_FENCE_WRAP) { |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 462 | list_del_init(&fence->head); |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 463 | fence_signal_locked(&fence->base); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 464 | INIT_LIST_HEAD(&action_list); |
| 465 | list_splice_init(&fence->seq_passed_actions, |
| 466 | &action_list); |
| 467 | vmw_fences_perform_actions(fman, &action_list); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 468 | } else |
| 469 | break; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 470 | } |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 471 | |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 472 | /* |
| 473 | * Rerun if the fence goal seqno was updated, and the |
| 474 | * hardware might have raced with that update, so that |
| 475 | * we missed a fence_goal irq. |
| 476 | */ |
| 477 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 478 | needs_rerun = vmw_fence_goal_new_locked(fman, seqno); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 479 | if (unlikely(needs_rerun)) { |
Thomas Hellstrom | b76ff5e | 2015-10-28 10:44:04 +0100 | [diff] [blame] | 480 | new_seqno = vmw_mmio_read(fifo_mem + SVGA_FIFO_FENCE); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 481 | if (new_seqno != seqno) { |
| 482 | seqno = new_seqno; |
| 483 | goto rerun; |
| 484 | } |
| 485 | } |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 486 | |
| 487 | if (!list_empty(&fman->cleanup_list)) |
| 488 | (void) schedule_work(&fman->work); |
| 489 | } |
| 490 | |
| 491 | void vmw_fences_update(struct vmw_fence_manager *fman) |
| 492 | { |
| 493 | unsigned long irq_flags; |
| 494 | |
| 495 | spin_lock_irqsave(&fman->lock, irq_flags); |
| 496 | __vmw_fences_update(fman); |
| 497 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 498 | } |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 499 | |
Maarten Lankhorst | c060a4e | 2014-03-26 13:06:24 +0100 | [diff] [blame] | 500 | bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence) |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 501 | { |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 502 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 503 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 504 | if (test_bit(FENCE_FLAG_SIGNALED_BIT, &fence->base.flags)) |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 505 | return 1; |
| 506 | |
Maarten Lankhorst | c060a4e | 2014-03-26 13:06:24 +0100 | [diff] [blame] | 507 | vmw_fences_update(fman); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 508 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 509 | return fence_is_signaled(&fence->base); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 510 | } |
| 511 | |
Maarten Lankhorst | c060a4e | 2014-03-26 13:06:24 +0100 | [diff] [blame] | 512 | int vmw_fence_obj_wait(struct vmw_fence_obj *fence, bool lazy, |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 513 | bool interruptible, unsigned long timeout) |
| 514 | { |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 515 | long ret = fence_wait_timeout(&fence->base, interruptible, timeout); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 516 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 517 | if (likely(ret > 0)) |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 518 | return 0; |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 519 | else if (ret == 0) |
| 520 | return -EBUSY; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 521 | else |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 522 | return ret; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 523 | } |
| 524 | |
| 525 | void vmw_fence_obj_flush(struct vmw_fence_obj *fence) |
| 526 | { |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 527 | struct vmw_private *dev_priv = fman_from_fence(fence)->dev_priv; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 528 | |
| 529 | vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC); |
| 530 | } |
| 531 | |
| 532 | static void vmw_fence_destroy(struct vmw_fence_obj *fence) |
| 533 | { |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 534 | fence_free(&fence->base); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 535 | } |
| 536 | |
| 537 | int vmw_fence_create(struct vmw_fence_manager *fman, |
| 538 | uint32_t seqno, |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 539 | struct vmw_fence_obj **p_fence) |
| 540 | { |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 541 | struct vmw_fence_obj *fence; |
| 542 | int ret; |
| 543 | |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 544 | fence = kzalloc(sizeof(*fence), GFP_KERNEL); |
Thomas Hellstrom | 1f563a6 | 2014-12-02 03:32:24 -0800 | [diff] [blame] | 545 | if (unlikely(fence == NULL)) |
| 546 | return -ENOMEM; |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 547 | |
Maarten Lankhorst | c060a4e | 2014-03-26 13:06:24 +0100 | [diff] [blame] | 548 | ret = vmw_fence_obj_init(fman, fence, seqno, |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 549 | vmw_fence_destroy); |
| 550 | if (unlikely(ret != 0)) |
| 551 | goto out_err_init; |
| 552 | |
| 553 | *p_fence = fence; |
| 554 | return 0; |
| 555 | |
| 556 | out_err_init: |
| 557 | kfree(fence); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 558 | return ret; |
| 559 | } |
| 560 | |
| 561 | |
| 562 | static void vmw_user_fence_destroy(struct vmw_fence_obj *fence) |
| 563 | { |
| 564 | struct vmw_user_fence *ufence = |
| 565 | container_of(fence, struct vmw_user_fence, fence); |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 566 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 567 | |
Thomas Hellstrom | 35f62a5 | 2012-11-20 12:16:49 +0000 | [diff] [blame] | 568 | ttm_base_object_kfree(ufence, base); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 569 | /* |
| 570 | * Free kernel space accounting. |
| 571 | */ |
| 572 | ttm_mem_global_free(vmw_mem_glob(fman->dev_priv), |
| 573 | fman->user_fence_size); |
| 574 | } |
| 575 | |
| 576 | static void vmw_user_fence_base_release(struct ttm_base_object **p_base) |
| 577 | { |
| 578 | struct ttm_base_object *base = *p_base; |
| 579 | struct vmw_user_fence *ufence = |
| 580 | container_of(base, struct vmw_user_fence, base); |
| 581 | struct vmw_fence_obj *fence = &ufence->fence; |
| 582 | |
| 583 | *p_base = NULL; |
| 584 | vmw_fence_obj_unreference(&fence); |
| 585 | } |
| 586 | |
| 587 | int vmw_user_fence_create(struct drm_file *file_priv, |
| 588 | struct vmw_fence_manager *fman, |
| 589 | uint32_t seqno, |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 590 | struct vmw_fence_obj **p_fence, |
| 591 | uint32_t *p_handle) |
| 592 | { |
| 593 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
| 594 | struct vmw_user_fence *ufence; |
| 595 | struct vmw_fence_obj *tmp; |
| 596 | struct ttm_mem_global *mem_glob = vmw_mem_glob(fman->dev_priv); |
| 597 | int ret; |
| 598 | |
| 599 | /* |
| 600 | * Kernel memory space accounting, since this object may |
| 601 | * be created by a user-space request. |
| 602 | */ |
| 603 | |
| 604 | ret = ttm_mem_global_alloc(mem_glob, fman->user_fence_size, |
| 605 | false, false); |
| 606 | if (unlikely(ret != 0)) |
| 607 | return ret; |
| 608 | |
| 609 | ufence = kzalloc(sizeof(*ufence), GFP_KERNEL); |
| 610 | if (unlikely(ufence == NULL)) { |
| 611 | ret = -ENOMEM; |
| 612 | goto out_no_object; |
| 613 | } |
| 614 | |
| 615 | ret = vmw_fence_obj_init(fman, &ufence->fence, seqno, |
Maarten Lankhorst | c060a4e | 2014-03-26 13:06:24 +0100 | [diff] [blame] | 616 | vmw_user_fence_destroy); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 617 | if (unlikely(ret != 0)) { |
| 618 | kfree(ufence); |
| 619 | goto out_no_object; |
| 620 | } |
| 621 | |
| 622 | /* |
| 623 | * The base object holds a reference which is freed in |
| 624 | * vmw_user_fence_base_release. |
| 625 | */ |
| 626 | tmp = vmw_fence_obj_reference(&ufence->fence); |
| 627 | ret = ttm_base_object_init(tfile, &ufence->base, false, |
| 628 | VMW_RES_FENCE, |
| 629 | &vmw_user_fence_base_release, NULL); |
| 630 | |
| 631 | |
| 632 | if (unlikely(ret != 0)) { |
| 633 | /* |
| 634 | * Free the base object's reference |
| 635 | */ |
| 636 | vmw_fence_obj_unreference(&tmp); |
| 637 | goto out_err; |
| 638 | } |
| 639 | |
| 640 | *p_fence = &ufence->fence; |
| 641 | *p_handle = ufence->base.hash.key; |
| 642 | |
| 643 | return 0; |
| 644 | out_err: |
| 645 | tmp = &ufence->fence; |
| 646 | vmw_fence_obj_unreference(&tmp); |
| 647 | out_no_object: |
| 648 | ttm_mem_global_free(mem_glob, fman->user_fence_size); |
| 649 | return ret; |
| 650 | } |
| 651 | |
| 652 | |
| 653 | /** |
| 654 | * vmw_fence_fifo_down - signal all unsignaled fence objects. |
| 655 | */ |
| 656 | |
| 657 | void vmw_fence_fifo_down(struct vmw_fence_manager *fman) |
| 658 | { |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 659 | struct list_head action_list; |
| 660 | int ret; |
| 661 | |
| 662 | /* |
| 663 | * The list may be altered while we traverse it, so always |
| 664 | * restart when we've released the fman->lock. |
| 665 | */ |
| 666 | |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 667 | spin_lock_irq(&fman->lock); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 668 | fman->fifo_down = true; |
| 669 | while (!list_empty(&fman->fence_list)) { |
| 670 | struct vmw_fence_obj *fence = |
| 671 | list_entry(fman->fence_list.prev, struct vmw_fence_obj, |
| 672 | head); |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 673 | fence_get(&fence->base); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 674 | spin_unlock_irq(&fman->lock); |
| 675 | |
Maarten Lankhorst | c060a4e | 2014-03-26 13:06:24 +0100 | [diff] [blame] | 676 | ret = vmw_fence_obj_wait(fence, false, false, |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 677 | VMW_FENCE_WAIT_TIMEOUT); |
| 678 | |
| 679 | if (unlikely(ret != 0)) { |
| 680 | list_del_init(&fence->head); |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 681 | fence_signal(&fence->base); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 682 | INIT_LIST_HEAD(&action_list); |
| 683 | list_splice_init(&fence->seq_passed_actions, |
| 684 | &action_list); |
| 685 | vmw_fences_perform_actions(fman, &action_list); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 686 | } |
| 687 | |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 688 | BUG_ON(!list_empty(&fence->head)); |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 689 | fence_put(&fence->base); |
| 690 | spin_lock_irq(&fman->lock); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 691 | } |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 692 | spin_unlock_irq(&fman->lock); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 693 | } |
| 694 | |
| 695 | void vmw_fence_fifo_up(struct vmw_fence_manager *fman) |
| 696 | { |
| 697 | unsigned long irq_flags; |
| 698 | |
| 699 | spin_lock_irqsave(&fman->lock, irq_flags); |
| 700 | fman->fifo_down = false; |
| 701 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
| 702 | } |
| 703 | |
| 704 | |
| 705 | int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data, |
| 706 | struct drm_file *file_priv) |
| 707 | { |
| 708 | struct drm_vmw_fence_wait_arg *arg = |
| 709 | (struct drm_vmw_fence_wait_arg *)data; |
| 710 | unsigned long timeout; |
| 711 | struct ttm_base_object *base; |
| 712 | struct vmw_fence_obj *fence; |
| 713 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
| 714 | int ret; |
| 715 | uint64_t wait_timeout = ((uint64_t)arg->timeout_us * HZ); |
| 716 | |
| 717 | /* |
| 718 | * 64-bit division not present on 32-bit systems, so do an |
| 719 | * approximation. (Divide by 1000000). |
| 720 | */ |
| 721 | |
| 722 | wait_timeout = (wait_timeout >> 20) + (wait_timeout >> 24) - |
| 723 | (wait_timeout >> 26); |
| 724 | |
| 725 | if (!arg->cookie_valid) { |
| 726 | arg->cookie_valid = 1; |
| 727 | arg->kernel_cookie = jiffies + wait_timeout; |
| 728 | } |
| 729 | |
| 730 | base = ttm_base_object_lookup(tfile, arg->handle); |
| 731 | if (unlikely(base == NULL)) { |
| 732 | printk(KERN_ERR "Wait invalid fence object handle " |
| 733 | "0x%08lx.\n", |
| 734 | (unsigned long)arg->handle); |
| 735 | return -EINVAL; |
| 736 | } |
| 737 | |
| 738 | fence = &(container_of(base, struct vmw_user_fence, base)->fence); |
| 739 | |
| 740 | timeout = jiffies; |
| 741 | if (time_after_eq(timeout, (unsigned long)arg->kernel_cookie)) { |
Maarten Lankhorst | c060a4e | 2014-03-26 13:06:24 +0100 | [diff] [blame] | 742 | ret = ((vmw_fence_obj_signaled(fence)) ? |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 743 | 0 : -EBUSY); |
| 744 | goto out; |
| 745 | } |
| 746 | |
| 747 | timeout = (unsigned long)arg->kernel_cookie - timeout; |
| 748 | |
Maarten Lankhorst | c060a4e | 2014-03-26 13:06:24 +0100 | [diff] [blame] | 749 | ret = vmw_fence_obj_wait(fence, arg->lazy, true, timeout); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 750 | |
| 751 | out: |
| 752 | ttm_base_object_unref(&base); |
| 753 | |
| 754 | /* |
| 755 | * Optionally unref the fence object. |
| 756 | */ |
| 757 | |
| 758 | if (ret == 0 && (arg->wait_options & DRM_VMW_WAIT_OPTION_UNREF)) |
| 759 | return ttm_ref_object_base_unref(tfile, arg->handle, |
| 760 | TTM_REF_USAGE); |
| 761 | return ret; |
| 762 | } |
| 763 | |
| 764 | int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data, |
| 765 | struct drm_file *file_priv) |
| 766 | { |
| 767 | struct drm_vmw_fence_signaled_arg *arg = |
| 768 | (struct drm_vmw_fence_signaled_arg *) data; |
| 769 | struct ttm_base_object *base; |
| 770 | struct vmw_fence_obj *fence; |
| 771 | struct vmw_fence_manager *fman; |
| 772 | struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile; |
| 773 | struct vmw_private *dev_priv = vmw_priv(dev); |
| 774 | |
| 775 | base = ttm_base_object_lookup(tfile, arg->handle); |
| 776 | if (unlikely(base == NULL)) { |
| 777 | printk(KERN_ERR "Fence signaled invalid fence object handle " |
| 778 | "0x%08lx.\n", |
| 779 | (unsigned long)arg->handle); |
| 780 | return -EINVAL; |
| 781 | } |
| 782 | |
| 783 | fence = &(container_of(base, struct vmw_user_fence, base)->fence); |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 784 | fman = fman_from_fence(fence); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 785 | |
Maarten Lankhorst | c060a4e | 2014-03-26 13:06:24 +0100 | [diff] [blame] | 786 | arg->signaled = vmw_fence_obj_signaled(fence); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 787 | |
Maarten Lankhorst | c060a4e | 2014-03-26 13:06:24 +0100 | [diff] [blame] | 788 | arg->signaled_flags = arg->flags; |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 789 | spin_lock_irq(&fman->lock); |
Thomas Hellstrom | ae2a104 | 2011-09-01 20:18:44 +0000 | [diff] [blame] | 790 | arg->passed_seqno = dev_priv->last_read_seqno; |
| 791 | spin_unlock_irq(&fman->lock); |
| 792 | |
| 793 | ttm_base_object_unref(&base); |
| 794 | |
| 795 | return 0; |
| 796 | } |
| 797 | |
| 798 | |
| 799 | int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data, |
| 800 | struct drm_file *file_priv) |
| 801 | { |
| 802 | struct drm_vmw_fence_arg *arg = |
| 803 | (struct drm_vmw_fence_arg *) data; |
| 804 | |
| 805 | return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile, |
| 806 | arg->handle, |
| 807 | TTM_REF_USAGE); |
| 808 | } |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 809 | |
Thomas Hellstrom | 6b82ef5 | 2012-02-09 16:56:42 +0100 | [diff] [blame] | 810 | /** |
| 811 | * vmw_event_fence_fpriv_gone - Remove references to struct drm_file objects |
| 812 | * |
| 813 | * @fman: Pointer to a struct vmw_fence_manager |
| 814 | * @event_list: Pointer to linked list of struct vmw_event_fence_action objects |
| 815 | * with pointers to a struct drm_file object about to be closed. |
| 816 | * |
| 817 | * This function removes all pending fence events with references to a |
| 818 | * specific struct drm_file object about to be closed. The caller is required |
| 819 | * to pass a list of all struct vmw_event_fence_action objects with such |
| 820 | * events attached. This function is typically called before the |
| 821 | * struct drm_file object's event management is taken down. |
| 822 | */ |
| 823 | void vmw_event_fence_fpriv_gone(struct vmw_fence_manager *fman, |
| 824 | struct list_head *event_list) |
| 825 | { |
| 826 | struct vmw_event_fence_action *eaction; |
| 827 | struct drm_pending_event *event; |
| 828 | unsigned long irq_flags; |
| 829 | |
| 830 | while (1) { |
| 831 | spin_lock_irqsave(&fman->lock, irq_flags); |
| 832 | if (list_empty(event_list)) |
| 833 | goto out_unlock; |
| 834 | eaction = list_first_entry(event_list, |
| 835 | struct vmw_event_fence_action, |
| 836 | fpriv_head); |
| 837 | list_del_init(&eaction->fpriv_head); |
| 838 | event = eaction->event; |
| 839 | eaction->event = NULL; |
| 840 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
| 841 | event->destroy(event); |
| 842 | } |
| 843 | out_unlock: |
| 844 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
| 845 | } |
| 846 | |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 847 | |
| 848 | /** |
| 849 | * vmw_event_fence_action_seq_passed |
| 850 | * |
| 851 | * @action: The struct vmw_fence_action embedded in a struct |
| 852 | * vmw_event_fence_action. |
| 853 | * |
| 854 | * This function is called when the seqno of the fence where @action is |
| 855 | * attached has passed. It queues the event on the submitter's event list. |
| 856 | * This function is always called from atomic context, and may be called |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 857 | * from irq context. |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 858 | */ |
| 859 | static void vmw_event_fence_action_seq_passed(struct vmw_fence_action *action) |
| 860 | { |
| 861 | struct vmw_event_fence_action *eaction = |
| 862 | container_of(action, struct vmw_event_fence_action, action); |
| 863 | struct drm_device *dev = eaction->dev; |
Thomas Hellstrom | 6b82ef5 | 2012-02-09 16:56:42 +0100 | [diff] [blame] | 864 | struct drm_pending_event *event = eaction->event; |
| 865 | struct drm_file *file_priv; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 866 | unsigned long irq_flags; |
| 867 | |
Thomas Hellstrom | 6b82ef5 | 2012-02-09 16:56:42 +0100 | [diff] [blame] | 868 | if (unlikely(event == NULL)) |
| 869 | return; |
| 870 | |
| 871 | file_priv = event->file_priv; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 872 | spin_lock_irqsave(&dev->event_lock, irq_flags); |
| 873 | |
| 874 | if (likely(eaction->tv_sec != NULL)) { |
| 875 | struct timeval tv; |
| 876 | |
| 877 | do_gettimeofday(&tv); |
| 878 | *eaction->tv_sec = tv.tv_sec; |
| 879 | *eaction->tv_usec = tv.tv_usec; |
| 880 | } |
| 881 | |
Thomas Hellstrom | 6b82ef5 | 2012-02-09 16:56:42 +0100 | [diff] [blame] | 882 | list_del_init(&eaction->fpriv_head); |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 883 | list_add_tail(&eaction->event->link, &file_priv->event_list); |
Thomas Hellstrom | 6b82ef5 | 2012-02-09 16:56:42 +0100 | [diff] [blame] | 884 | eaction->event = NULL; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 885 | wake_up_all(&file_priv->event_wait); |
| 886 | spin_unlock_irqrestore(&dev->event_lock, irq_flags); |
| 887 | } |
| 888 | |
| 889 | /** |
| 890 | * vmw_event_fence_action_cleanup |
| 891 | * |
| 892 | * @action: The struct vmw_fence_action embedded in a struct |
| 893 | * vmw_event_fence_action. |
| 894 | * |
| 895 | * This function is the struct vmw_fence_action destructor. It's typically |
| 896 | * called from a workqueue. |
| 897 | */ |
| 898 | static void vmw_event_fence_action_cleanup(struct vmw_fence_action *action) |
| 899 | { |
| 900 | struct vmw_event_fence_action *eaction = |
| 901 | container_of(action, struct vmw_event_fence_action, action); |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 902 | struct vmw_fence_manager *fman = fman_from_fence(eaction->fence); |
Thomas Hellstrom | 6b82ef5 | 2012-02-09 16:56:42 +0100 | [diff] [blame] | 903 | unsigned long irq_flags; |
| 904 | |
| 905 | spin_lock_irqsave(&fman->lock, irq_flags); |
| 906 | list_del(&eaction->fpriv_head); |
| 907 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 908 | |
| 909 | vmw_fence_obj_unreference(&eaction->fence); |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 910 | kfree(eaction); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 911 | } |
| 912 | |
| 913 | |
| 914 | /** |
| 915 | * vmw_fence_obj_add_action - Add an action to a fence object. |
| 916 | * |
| 917 | * @fence - The fence object. |
| 918 | * @action - The action to add. |
| 919 | * |
| 920 | * Note that the action callbacks may be executed before this function |
| 921 | * returns. |
| 922 | */ |
Rashika Kheria | 94844cf | 2014-01-06 22:21:21 +0530 | [diff] [blame] | 923 | static void vmw_fence_obj_add_action(struct vmw_fence_obj *fence, |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 924 | struct vmw_fence_action *action) |
| 925 | { |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 926 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 927 | unsigned long irq_flags; |
| 928 | bool run_update = false; |
| 929 | |
| 930 | mutex_lock(&fman->goal_irq_mutex); |
| 931 | spin_lock_irqsave(&fman->lock, irq_flags); |
| 932 | |
| 933 | fman->pending_actions[action->type]++; |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 934 | if (fence_is_signaled_locked(&fence->base)) { |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 935 | struct list_head action_list; |
| 936 | |
| 937 | INIT_LIST_HEAD(&action_list); |
| 938 | list_add_tail(&action->head, &action_list); |
| 939 | vmw_fences_perform_actions(fman, &action_list); |
| 940 | } else { |
| 941 | list_add_tail(&action->head, &fence->seq_passed_actions); |
| 942 | |
| 943 | /* |
| 944 | * This function may set fman::seqno_valid, so it must |
| 945 | * be run with the goal_irq_mutex held. |
| 946 | */ |
| 947 | run_update = vmw_fence_goal_check_locked(fence); |
| 948 | } |
| 949 | |
| 950 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
| 951 | |
| 952 | if (run_update) { |
| 953 | if (!fman->goal_irq_on) { |
| 954 | fman->goal_irq_on = true; |
| 955 | vmw_goal_waiter_add(fman->dev_priv); |
| 956 | } |
| 957 | vmw_fences_update(fman); |
| 958 | } |
| 959 | mutex_unlock(&fman->goal_irq_mutex); |
| 960 | |
| 961 | } |
| 962 | |
| 963 | /** |
| 964 | * vmw_event_fence_action_create - Post an event for sending when a fence |
| 965 | * object seqno has passed. |
| 966 | * |
| 967 | * @file_priv: The file connection on which the event should be posted. |
| 968 | * @fence: The fence object on which to post the event. |
| 969 | * @event: Event to be posted. This event should've been alloced |
| 970 | * using k[mz]alloc, and should've been completely initialized. |
| 971 | * @interruptible: Interruptible waits if possible. |
| 972 | * |
| 973 | * As a side effect, the object pointed to by @event may have been |
| 974 | * freed when this function returns. If this function returns with |
| 975 | * an error code, the caller needs to free that object. |
| 976 | */ |
| 977 | |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 978 | int vmw_event_fence_action_queue(struct drm_file *file_priv, |
| 979 | struct vmw_fence_obj *fence, |
| 980 | struct drm_pending_event *event, |
| 981 | uint32_t *tv_sec, |
| 982 | uint32_t *tv_usec, |
| 983 | bool interruptible) |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 984 | { |
Dan Carpenter | 0c5d370 | 2011-10-18 09:09:45 +0300 | [diff] [blame] | 985 | struct vmw_event_fence_action *eaction; |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 986 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
Thomas Hellstrom | 6b82ef5 | 2012-02-09 16:56:42 +0100 | [diff] [blame] | 987 | struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); |
| 988 | unsigned long irq_flags; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 989 | |
| 990 | eaction = kzalloc(sizeof(*eaction), GFP_KERNEL); |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 991 | if (unlikely(eaction == NULL)) |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 992 | return -ENOMEM; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 993 | |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 994 | eaction->event = event; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 995 | |
| 996 | eaction->action.seq_passed = vmw_event_fence_action_seq_passed; |
| 997 | eaction->action.cleanup = vmw_event_fence_action_cleanup; |
| 998 | eaction->action.type = VMW_ACTION_EVENT; |
| 999 | |
| 1000 | eaction->fence = vmw_fence_obj_reference(fence); |
| 1001 | eaction->dev = fman->dev_priv->dev; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 1002 | eaction->tv_sec = tv_sec; |
| 1003 | eaction->tv_usec = tv_usec; |
| 1004 | |
Thomas Hellstrom | 6b82ef5 | 2012-02-09 16:56:42 +0100 | [diff] [blame] | 1005 | spin_lock_irqsave(&fman->lock, irq_flags); |
| 1006 | list_add_tail(&eaction->fpriv_head, &vmw_fp->fence_events); |
| 1007 | spin_unlock_irqrestore(&fman->lock, irq_flags); |
| 1008 | |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 1009 | vmw_fence_obj_add_action(fence, &eaction->action); |
| 1010 | |
| 1011 | return 0; |
| 1012 | } |
| 1013 | |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 1014 | struct vmw_event_fence_pending { |
| 1015 | struct drm_pending_event base; |
| 1016 | struct drm_vmw_event_fence event; |
| 1017 | }; |
| 1018 | |
Rashika Kheria | 94844cf | 2014-01-06 22:21:21 +0530 | [diff] [blame] | 1019 | static int vmw_event_fence_action_create(struct drm_file *file_priv, |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 1020 | struct vmw_fence_obj *fence, |
| 1021 | uint32_t flags, |
| 1022 | uint64_t user_data, |
| 1023 | bool interruptible) |
| 1024 | { |
| 1025 | struct vmw_event_fence_pending *event; |
Maarten Lankhorst | 2298e80 | 2014-03-26 14:07:44 +0100 | [diff] [blame] | 1026 | struct vmw_fence_manager *fman = fman_from_fence(fence); |
| 1027 | struct drm_device *dev = fman->dev_priv->dev; |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 1028 | unsigned long irq_flags; |
| 1029 | int ret; |
| 1030 | |
| 1031 | spin_lock_irqsave(&dev->event_lock, irq_flags); |
| 1032 | |
| 1033 | ret = (file_priv->event_space < sizeof(event->event)) ? -EBUSY : 0; |
| 1034 | if (likely(ret == 0)) |
| 1035 | file_priv->event_space -= sizeof(event->event); |
| 1036 | |
| 1037 | spin_unlock_irqrestore(&dev->event_lock, irq_flags); |
| 1038 | |
| 1039 | if (unlikely(ret != 0)) { |
| 1040 | DRM_ERROR("Failed to allocate event space for this file.\n"); |
| 1041 | goto out_no_space; |
| 1042 | } |
| 1043 | |
| 1044 | |
Dan Carpenter | 68c4fce | 2012-09-23 19:33:55 +0300 | [diff] [blame] | 1045 | event = kzalloc(sizeof(*event), GFP_KERNEL); |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 1046 | if (unlikely(event == NULL)) { |
| 1047 | DRM_ERROR("Failed to allocate an event.\n"); |
| 1048 | ret = -ENOMEM; |
| 1049 | goto out_no_event; |
| 1050 | } |
| 1051 | |
| 1052 | event->event.base.type = DRM_VMW_EVENT_FENCE_SIGNALED; |
| 1053 | event->event.base.length = sizeof(*event); |
| 1054 | event->event.user_data = user_data; |
| 1055 | |
| 1056 | event->base.event = &event->event.base; |
| 1057 | event->base.file_priv = file_priv; |
| 1058 | event->base.destroy = (void (*) (struct drm_pending_event *)) kfree; |
| 1059 | |
| 1060 | |
| 1061 | if (flags & DRM_VMW_FE_FLAG_REQ_TIME) |
| 1062 | ret = vmw_event_fence_action_queue(file_priv, fence, |
| 1063 | &event->base, |
| 1064 | &event->event.tv_sec, |
| 1065 | &event->event.tv_usec, |
| 1066 | interruptible); |
| 1067 | else |
| 1068 | ret = vmw_event_fence_action_queue(file_priv, fence, |
| 1069 | &event->base, |
| 1070 | NULL, |
| 1071 | NULL, |
| 1072 | interruptible); |
| 1073 | if (ret != 0) |
| 1074 | goto out_no_queue; |
| 1075 | |
Thomas Hellstrom | 89669e7 | 2014-12-02 03:36:57 -0800 | [diff] [blame] | 1076 | return 0; |
| 1077 | |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 1078 | out_no_queue: |
| 1079 | event->base.destroy(&event->base); |
| 1080 | out_no_event: |
| 1081 | spin_lock_irqsave(&dev->event_lock, irq_flags); |
| 1082 | file_priv->event_space += sizeof(*event); |
| 1083 | spin_unlock_irqrestore(&dev->event_lock, irq_flags); |
| 1084 | out_no_space: |
| 1085 | return ret; |
| 1086 | } |
| 1087 | |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 1088 | int vmw_fence_event_ioctl(struct drm_device *dev, void *data, |
| 1089 | struct drm_file *file_priv) |
| 1090 | { |
| 1091 | struct vmw_private *dev_priv = vmw_priv(dev); |
| 1092 | struct drm_vmw_fence_event_arg *arg = |
| 1093 | (struct drm_vmw_fence_event_arg *) data; |
| 1094 | struct vmw_fence_obj *fence = NULL; |
| 1095 | struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv); |
| 1096 | struct drm_vmw_fence_rep __user *user_fence_rep = |
| 1097 | (struct drm_vmw_fence_rep __user *)(unsigned long) |
| 1098 | arg->fence_rep; |
| 1099 | uint32_t handle; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 1100 | int ret; |
| 1101 | |
| 1102 | /* |
| 1103 | * Look up an existing fence object, |
| 1104 | * and if user-space wants a new reference, |
| 1105 | * add one. |
| 1106 | */ |
| 1107 | if (arg->handle) { |
| 1108 | struct ttm_base_object *base = |
Thomas Hellstrom | 05efb1a | 2013-12-18 14:13:29 +0100 | [diff] [blame] | 1109 | ttm_base_object_lookup_for_ref(dev_priv->tdev, |
| 1110 | arg->handle); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 1111 | |
| 1112 | if (unlikely(base == NULL)) { |
| 1113 | DRM_ERROR("Fence event invalid fence object handle " |
| 1114 | "0x%08lx.\n", |
| 1115 | (unsigned long)arg->handle); |
| 1116 | return -EINVAL; |
| 1117 | } |
| 1118 | fence = &(container_of(base, struct vmw_user_fence, |
| 1119 | base)->fence); |
| 1120 | (void) vmw_fence_obj_reference(fence); |
| 1121 | |
| 1122 | if (user_fence_rep != NULL) { |
| 1123 | bool existed; |
| 1124 | |
| 1125 | ret = ttm_ref_object_add(vmw_fp->tfile, base, |
| 1126 | TTM_REF_USAGE, &existed); |
| 1127 | if (unlikely(ret != 0)) { |
| 1128 | DRM_ERROR("Failed to reference a fence " |
| 1129 | "object.\n"); |
| 1130 | goto out_no_ref_obj; |
| 1131 | } |
| 1132 | handle = base->hash.key; |
| 1133 | } |
| 1134 | ttm_base_object_unref(&base); |
| 1135 | } |
| 1136 | |
| 1137 | /* |
| 1138 | * Create a new fence object. |
| 1139 | */ |
| 1140 | if (!fence) { |
| 1141 | ret = vmw_execbuf_fence_commands(file_priv, dev_priv, |
| 1142 | &fence, |
| 1143 | (user_fence_rep) ? |
| 1144 | &handle : NULL); |
| 1145 | if (unlikely(ret != 0)) { |
| 1146 | DRM_ERROR("Fence event failed to create fence.\n"); |
| 1147 | return ret; |
| 1148 | } |
| 1149 | } |
| 1150 | |
| 1151 | BUG_ON(fence == NULL); |
| 1152 | |
Thomas Hellstrom | 89669e7 | 2014-12-02 03:36:57 -0800 | [diff] [blame] | 1153 | ret = vmw_event_fence_action_create(file_priv, fence, |
| 1154 | arg->flags, |
| 1155 | arg->user_data, |
| 1156 | true); |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 1157 | if (unlikely(ret != 0)) { |
| 1158 | if (ret != -ERESTARTSYS) |
| 1159 | DRM_ERROR("Failed to attach event to fence.\n"); |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 1160 | goto out_no_create; |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 1161 | } |
| 1162 | |
| 1163 | vmw_execbuf_copy_fence_user(dev_priv, vmw_fp, 0, user_fence_rep, fence, |
| 1164 | handle); |
| 1165 | vmw_fence_obj_unreference(&fence); |
| 1166 | return 0; |
Jakob Bornecrantz | 8b7de6a | 2012-02-09 16:56:41 +0100 | [diff] [blame] | 1167 | out_no_create: |
Thomas Hellstrom | 57c5ee7 | 2011-10-10 12:23:26 +0200 | [diff] [blame] | 1168 | if (user_fence_rep != NULL) |
| 1169 | ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile, |
| 1170 | handle, TTM_REF_USAGE); |
| 1171 | out_no_ref_obj: |
| 1172 | vmw_fence_obj_unreference(&fence); |
| 1173 | return ret; |
| 1174 | } |