Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 Ben Skeggs. |
| 3 | * All Rights Reserved. |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining |
| 6 | * a copy of this software and associated documentation files (the |
| 7 | * "Software"), to deal in the Software without restriction, including |
| 8 | * without limitation the rights to use, copy, modify, merge, publish, |
| 9 | * distribute, sublicense, and/or sell copies of the Software, and to |
| 10 | * permit persons to whom the Software is furnished to do so, subject to |
| 11 | * the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice (including the |
| 14 | * next paragraph) shall be included in all copies or substantial |
| 15 | * portions of the Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 18 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 19 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 20 | * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE |
| 21 | * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| 22 | * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| 23 | * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 24 | * |
| 25 | */ |
| 26 | |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 27 | #include <drm/drmP.h> |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 28 | |
Marcin Slusarz | bd35fe5 | 2011-03-09 14:22:19 +0100 | [diff] [blame] | 29 | #include <linux/ktime.h> |
| 30 | #include <linux/hrtimer.h> |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 31 | #include <trace/events/fence.h> |
Marcin Slusarz | bd35fe5 | 2011-03-09 14:22:19 +0100 | [diff] [blame] | 32 | |
Ben Skeggs | 867920f | 2014-08-10 04:10:25 +1000 | [diff] [blame] | 33 | #include <nvif/notify.h> |
| 34 | #include <nvif/event.h> |
| 35 | |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 36 | #include "nouveau_drm.h" |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 37 | #include "nouveau_dma.h" |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 38 | #include "nouveau_fence.h" |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 39 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 40 | static const struct fence_ops nouveau_fence_ops_uevent; |
| 41 | static const struct fence_ops nouveau_fence_ops_legacy; |
| 42 | |
| 43 | static inline struct nouveau_fence * |
| 44 | from_fence(struct fence *fence) |
| 45 | { |
| 46 | return container_of(fence, struct nouveau_fence, base); |
| 47 | } |
| 48 | |
| 49 | static inline struct nouveau_fence_chan * |
| 50 | nouveau_fctx(struct nouveau_fence *fence) |
| 51 | { |
| 52 | return container_of(fence->base.lock, struct nouveau_fence_chan, lock); |
| 53 | } |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 54 | |
| 55 | static void |
| 56 | nouveau_fence_signal(struct nouveau_fence *fence) |
| 57 | { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 58 | fence_signal_locked(&fence->base); |
| 59 | list_del(&fence->head); |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 60 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 61 | if (test_bit(FENCE_FLAG_USER_BITS, &fence->base.flags)) { |
| 62 | struct nouveau_fence_chan *fctx = nouveau_fctx(fence); |
| 63 | |
| 64 | if (!--fctx->notify_ref) |
| 65 | nvif_notify_put(&fctx->notify); |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 66 | } |
| 67 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 68 | fence_put(&fence->base); |
| 69 | } |
| 70 | |
| 71 | static struct nouveau_fence * |
| 72 | nouveau_local_fence(struct fence *fence, struct nouveau_drm *drm) { |
| 73 | struct nouveau_fence_priv *priv = (void*)drm->fence; |
| 74 | |
| 75 | if (fence->ops != &nouveau_fence_ops_legacy && |
| 76 | fence->ops != &nouveau_fence_ops_uevent) |
| 77 | return NULL; |
| 78 | |
| 79 | if (fence->context < priv->context_base || |
| 80 | fence->context >= priv->context_base + priv->contexts) |
| 81 | return NULL; |
| 82 | |
| 83 | return from_fence(fence); |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 84 | } |
| 85 | |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 86 | void |
| 87 | nouveau_fence_context_del(struct nouveau_fence_chan *fctx) |
| 88 | { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 89 | struct nouveau_fence *fence; |
| 90 | |
| 91 | nvif_notify_fini(&fctx->notify); |
| 92 | |
| 93 | spin_lock_irq(&fctx->lock); |
| 94 | while (!list_empty(&fctx->pending)) { |
| 95 | fence = list_entry(fctx->pending.next, typeof(*fence), head); |
| 96 | |
| 97 | nouveau_fence_signal(fence); |
| 98 | fence->channel = NULL; |
| 99 | } |
| 100 | spin_unlock_irq(&fctx->lock); |
| 101 | } |
| 102 | |
| 103 | static void |
| 104 | nouveau_fence_update(struct nouveau_channel *chan, struct nouveau_fence_chan *fctx) |
| 105 | { |
| 106 | struct nouveau_fence *fence; |
| 107 | |
| 108 | u32 seq = fctx->read(chan); |
| 109 | |
| 110 | while (!list_empty(&fctx->pending)) { |
| 111 | fence = list_entry(fctx->pending.next, typeof(*fence), head); |
| 112 | |
| 113 | if ((int)(seq - fence->base.seqno) < 0) |
| 114 | return; |
| 115 | |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 116 | nouveau_fence_signal(fence); |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 117 | } |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 118 | } |
| 119 | |
| 120 | static int |
| 121 | nouveau_fence_wait_uevent_handler(struct nvif_notify *notify) |
| 122 | { |
| 123 | struct nouveau_fence_chan *fctx = |
| 124 | container_of(notify, typeof(*fctx), notify); |
| 125 | unsigned long flags; |
| 126 | |
| 127 | spin_lock_irqsave(&fctx->lock, flags); |
| 128 | if (!list_empty(&fctx->pending)) { |
| 129 | struct nouveau_fence *fence; |
| 130 | |
| 131 | fence = list_entry(fctx->pending.next, typeof(*fence), head); |
| 132 | nouveau_fence_update(fence->channel, fctx); |
| 133 | } |
| 134 | spin_unlock_irqrestore(&fctx->lock, flags); |
| 135 | |
| 136 | /* Always return keep here. NVIF refcount is handled with nouveau_fence_update */ |
| 137 | return NVIF_NOTIFY_KEEP; |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 138 | } |
| 139 | |
| 140 | void |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 141 | nouveau_fence_context_new(struct nouveau_channel *chan, struct nouveau_fence_chan *fctx) |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 142 | { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 143 | struct nouveau_fence_priv *priv = (void*)chan->drm->fence; |
| 144 | int ret; |
| 145 | |
Ben Skeggs | f589be8 | 2012-07-22 11:55:54 +1000 | [diff] [blame] | 146 | INIT_LIST_HEAD(&fctx->flip); |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 147 | INIT_LIST_HEAD(&fctx->pending); |
| 148 | spin_lock_init(&fctx->lock); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 149 | fctx->context = priv->context_base + chan->chid; |
| 150 | |
| 151 | if (!priv->uevent) |
| 152 | return; |
| 153 | |
| 154 | ret = nvif_notify_init(chan->object, NULL, |
| 155 | nouveau_fence_wait_uevent_handler, false, |
| 156 | G82_CHANNEL_DMA_V0_NTFY_UEVENT, |
| 157 | &(struct nvif_notify_uevent_req) { }, |
| 158 | sizeof(struct nvif_notify_uevent_req), |
| 159 | sizeof(struct nvif_notify_uevent_rep), |
| 160 | &fctx->notify); |
| 161 | |
| 162 | WARN_ON(ret); |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 163 | } |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 164 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 165 | struct nouveau_fence_work { |
| 166 | struct work_struct work; |
| 167 | struct fence_cb cb; |
| 168 | void (*func)(void *); |
| 169 | void *data; |
| 170 | }; |
| 171 | |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 172 | static void |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 173 | nouveau_fence_work_handler(struct work_struct *kwork) |
| 174 | { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 175 | struct nouveau_fence_work *work = container_of(kwork, typeof(*work), work); |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 176 | work->func(work->data); |
| 177 | kfree(work); |
| 178 | } |
| 179 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 180 | static void nouveau_fence_work_cb(struct fence *fence, struct fence_cb *cb) |
| 181 | { |
| 182 | struct nouveau_fence_work *work = container_of(cb, typeof(*work), cb); |
| 183 | |
| 184 | schedule_work(&work->work); |
| 185 | } |
| 186 | |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 187 | void |
Maarten Lankhorst | f2c24b8 | 2014-04-02 17:14:48 +0200 | [diff] [blame] | 188 | nouveau_fence_work(struct fence *fence, |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 189 | void (*func)(void *), void *data) |
| 190 | { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 191 | struct nouveau_fence_work *work; |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 192 | |
Maarten Lankhorst | f2c24b8 | 2014-04-02 17:14:48 +0200 | [diff] [blame] | 193 | if (fence_is_signaled(fence)) |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 194 | goto err; |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 195 | |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 196 | work = kmalloc(sizeof(*work), GFP_KERNEL); |
| 197 | if (!work) { |
Maarten Lankhorst | f2c24b8 | 2014-04-02 17:14:48 +0200 | [diff] [blame] | 198 | WARN_ON(nouveau_fence_wait((struct nouveau_fence *)fence, |
| 199 | false, false)); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 200 | goto err; |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 201 | } |
| 202 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 203 | INIT_WORK(&work->work, nouveau_fence_work_handler); |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 204 | work->func = func; |
| 205 | work->data = data; |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 206 | |
Maarten Lankhorst | f2c24b8 | 2014-04-02 17:14:48 +0200 | [diff] [blame] | 207 | if (fence_add_callback(fence, &work->cb, nouveau_fence_work_cb) < 0) |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 208 | goto err_free; |
| 209 | return; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 210 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 211 | err_free: |
| 212 | kfree(work); |
| 213 | err: |
| 214 | func(data); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 215 | } |
| 216 | |
| 217 | int |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 218 | nouveau_fence_emit(struct nouveau_fence *fence, struct nouveau_channel *chan) |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 219 | { |
Ben Skeggs | e193b1d | 2012-07-19 10:51:42 +1000 | [diff] [blame] | 220 | struct nouveau_fence_chan *fctx = chan->fence; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 221 | struct nouveau_fence_priv *priv = (void*)chan->drm->fence; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 222 | int ret; |
| 223 | |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 224 | fence->channel = chan; |
Daniel Vetter | bfd8303 | 2013-12-11 11:34:41 +0100 | [diff] [blame] | 225 | fence->timeout = jiffies + (15 * HZ); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 226 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 227 | if (priv->uevent) |
| 228 | fence_init(&fence->base, &nouveau_fence_ops_uevent, |
| 229 | &fctx->lock, |
| 230 | priv->context_base + chan->chid, ++fctx->sequence); |
| 231 | else |
| 232 | fence_init(&fence->base, &nouveau_fence_ops_legacy, |
| 233 | &fctx->lock, |
| 234 | priv->context_base + chan->chid, ++fctx->sequence); |
| 235 | |
| 236 | trace_fence_emit(&fence->base); |
Ben Skeggs | 827520c | 2013-02-14 13:20:17 +1000 | [diff] [blame] | 237 | ret = fctx->emit(fence); |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 238 | if (!ret) { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 239 | fence_get(&fence->base); |
| 240 | spin_lock_irq(&fctx->lock); |
| 241 | nouveau_fence_update(chan, fctx); |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 242 | list_add_tail(&fence->head, &fctx->pending); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 243 | spin_unlock_irq(&fctx->lock); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 244 | } |
| 245 | |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 246 | return ret; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 247 | } |
| 248 | |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 249 | bool |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 250 | nouveau_fence_done(struct nouveau_fence *fence) |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 251 | { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 252 | if (fence->base.ops == &nouveau_fence_ops_legacy || |
| 253 | fence->base.ops == &nouveau_fence_ops_uevent) { |
| 254 | struct nouveau_fence_chan *fctx = nouveau_fctx(fence); |
| 255 | unsigned long flags; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 256 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 257 | if (test_bit(FENCE_FLAG_SIGNALED_BIT, &fence->base.flags)) |
| 258 | return true; |
Ben Skeggs | 79ca277 | 2014-08-10 04:10:20 +1000 | [diff] [blame] | 259 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 260 | spin_lock_irqsave(&fctx->lock, flags); |
| 261 | nouveau_fence_update(fence->channel, fctx); |
| 262 | spin_unlock_irqrestore(&fctx->lock, flags); |
Ben Skeggs | e18c080 | 2013-01-31 14:57:33 +1000 | [diff] [blame] | 263 | } |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 264 | return fence_is_signaled(&fence->base); |
Ben Skeggs | e18c080 | 2013-01-31 14:57:33 +1000 | [diff] [blame] | 265 | } |
| 266 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 267 | static long |
| 268 | nouveau_fence_wait_legacy(struct fence *f, bool intr, long wait) |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 269 | { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 270 | struct nouveau_fence *fence = from_fence(f); |
Marcin Slusarz | bd35fe5 | 2011-03-09 14:22:19 +0100 | [diff] [blame] | 271 | unsigned long sleep_time = NSEC_PER_MSEC / 1000; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 272 | unsigned long t = jiffies, timeout = t + wait; |
Ben Skeggs | e18c080 | 2013-01-31 14:57:33 +1000 | [diff] [blame] | 273 | |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 274 | while (!nouveau_fence_done(fence)) { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 275 | ktime_t kt; |
| 276 | |
| 277 | t = jiffies; |
| 278 | |
| 279 | if (wait != MAX_SCHEDULE_TIMEOUT && time_after_eq(t, timeout)) { |
| 280 | __set_current_state(TASK_RUNNING); |
| 281 | return 0; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 282 | } |
| 283 | |
Ben Skeggs | 875ac34 | 2012-04-30 12:51:48 +1000 | [diff] [blame] | 284 | __set_current_state(intr ? TASK_INTERRUPTIBLE : |
| 285 | TASK_UNINTERRUPTIBLE); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 286 | |
| 287 | kt = ktime_set(0, sleep_time); |
| 288 | schedule_hrtimeout(&kt, HRTIMER_MODE_REL); |
| 289 | sleep_time *= 2; |
| 290 | if (sleep_time > NSEC_PER_MSEC) |
| 291 | sleep_time = NSEC_PER_MSEC; |
| 292 | |
| 293 | if (intr && signal_pending(current)) |
| 294 | return -ERESTARTSYS; |
| 295 | } |
| 296 | |
| 297 | __set_current_state(TASK_RUNNING); |
| 298 | |
| 299 | return timeout - t; |
| 300 | } |
| 301 | |
| 302 | static int |
| 303 | nouveau_fence_wait_busy(struct nouveau_fence *fence, bool intr) |
| 304 | { |
| 305 | int ret = 0; |
| 306 | |
| 307 | while (!nouveau_fence_done(fence)) { |
| 308 | if (time_after_eq(jiffies, fence->timeout)) { |
| 309 | ret = -EBUSY; |
| 310 | break; |
Marcin Slusarz | bd35fe5 | 2011-03-09 14:22:19 +0100 | [diff] [blame] | 311 | } |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 312 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 313 | __set_current_state(intr ? |
| 314 | TASK_INTERRUPTIBLE : |
| 315 | TASK_UNINTERRUPTIBLE); |
| 316 | |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 317 | if (intr && signal_pending(current)) { |
Ben Skeggs | 9ddc8c5 | 2009-12-15 11:04:25 +1000 | [diff] [blame] | 318 | ret = -ERESTARTSYS; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 319 | break; |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | __set_current_state(TASK_RUNNING); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 324 | return ret; |
| 325 | } |
| 326 | |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 327 | int |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 328 | nouveau_fence_wait(struct nouveau_fence *fence, bool lazy, bool intr) |
| 329 | { |
| 330 | long ret; |
| 331 | |
| 332 | if (!lazy) |
| 333 | return nouveau_fence_wait_busy(fence, intr); |
| 334 | |
| 335 | ret = fence_wait_timeout(&fence->base, intr, 15 * HZ); |
| 336 | if (ret < 0) |
| 337 | return ret; |
| 338 | else if (!ret) |
| 339 | return -EBUSY; |
| 340 | else |
| 341 | return 0; |
| 342 | } |
| 343 | |
| 344 | int |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 345 | nouveau_fence_sync(struct nouveau_bo *nvbo, struct nouveau_channel *chan, bool exclusive) |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 346 | { |
Ben Skeggs | 827520c | 2013-02-14 13:20:17 +1000 | [diff] [blame] | 347 | struct nouveau_fence_chan *fctx = chan->fence; |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 348 | struct fence *fence; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 349 | struct reservation_object *resv = nvbo->bo.resv; |
| 350 | struct reservation_object_list *fobj; |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 351 | struct nouveau_fence *f; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 352 | int ret = 0, i; |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 353 | |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 354 | if (!exclusive) { |
| 355 | ret = reservation_object_reserve_shared(resv); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 356 | |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 357 | if (ret) |
| 358 | return ret; |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 359 | } |
| 360 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 361 | fobj = reservation_object_get_list(resv); |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 362 | fence = reservation_object_get_excl(resv); |
| 363 | |
| 364 | if (fence && (!exclusive || !fobj || !fobj->shared_count)) { |
| 365 | struct nouveau_channel *prev = NULL; |
| 366 | |
| 367 | f = nouveau_local_fence(fence, chan->drm); |
| 368 | if (f) |
| 369 | prev = f->channel; |
| 370 | |
| 371 | if (!prev || (prev != chan && (ret = fctx->sync(f, prev, chan)))) |
| 372 | ret = fence_wait(fence, true); |
| 373 | |
| 374 | return ret; |
| 375 | } |
| 376 | |
| 377 | if (!exclusive || !fobj) |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 378 | return ret; |
| 379 | |
| 380 | for (i = 0; i < fobj->shared_count && !ret; ++i) { |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 381 | struct nouveau_channel *prev = NULL; |
| 382 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 383 | fence = rcu_dereference_protected(fobj->shared[i], |
| 384 | reservation_object_held(resv)); |
| 385 | |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 386 | f = nouveau_local_fence(fence, chan->drm); |
| 387 | if (f) |
| 388 | prev = f->channel; |
| 389 | |
| 390 | if (!prev || (ret = fctx->sync(f, prev, chan))) |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 391 | ret = fence_wait(fence, true); |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 392 | |
| 393 | if (ret) |
| 394 | break; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 395 | } |
| 396 | |
| 397 | return ret; |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 398 | } |
| 399 | |
| 400 | void |
| 401 | nouveau_fence_unref(struct nouveau_fence **pfence) |
| 402 | { |
| 403 | if (*pfence) |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 404 | fence_put(&(*pfence)->base); |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 405 | *pfence = NULL; |
| 406 | } |
| 407 | |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 408 | int |
Ben Skeggs | 264ce19 | 2013-02-14 13:43:21 +1000 | [diff] [blame] | 409 | nouveau_fence_new(struct nouveau_channel *chan, bool sysmem, |
| 410 | struct nouveau_fence **pfence) |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 411 | { |
| 412 | struct nouveau_fence *fence; |
| 413 | int ret = 0; |
| 414 | |
Ben Skeggs | e193b1d | 2012-07-19 10:51:42 +1000 | [diff] [blame] | 415 | if (unlikely(!chan->fence)) |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 416 | return -ENODEV; |
| 417 | |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 418 | fence = kzalloc(sizeof(*fence), GFP_KERNEL); |
| 419 | if (!fence) |
| 420 | return -ENOMEM; |
Ben Skeggs | 264ce19 | 2013-02-14 13:43:21 +1000 | [diff] [blame] | 421 | |
| 422 | fence->sysmem = sysmem; |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 423 | |
Cong Ding | b5d8f05 | 2013-01-15 18:19:49 +0100 | [diff] [blame] | 424 | ret = nouveau_fence_emit(fence, chan); |
| 425 | if (ret) |
| 426 | nouveau_fence_unref(&fence); |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 427 | |
| 428 | *pfence = fence; |
| 429 | return ret; |
| 430 | } |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 431 | |
| 432 | static const char *nouveau_fence_get_get_driver_name(struct fence *fence) |
| 433 | { |
| 434 | return "nouveau"; |
| 435 | } |
| 436 | |
| 437 | static const char *nouveau_fence_get_timeline_name(struct fence *f) |
| 438 | { |
| 439 | struct nouveau_fence *fence = from_fence(f); |
| 440 | struct nouveau_fence_chan *fctx = nouveau_fctx(fence); |
| 441 | |
| 442 | return fence->channel ? fctx->name : "dead channel"; |
| 443 | } |
| 444 | |
| 445 | /* |
| 446 | * In an ideal world, read would not assume the channel context is still alive. |
| 447 | * This function may be called from another device, running into free memory as a |
| 448 | * result. The drm node should still be there, so we can derive the index from |
| 449 | * the fence context. |
| 450 | */ |
| 451 | static bool nouveau_fence_is_signaled(struct fence *f) |
| 452 | { |
| 453 | struct nouveau_fence *fence = from_fence(f); |
| 454 | struct nouveau_fence_chan *fctx = nouveau_fctx(fence); |
| 455 | struct nouveau_channel *chan = fence->channel; |
| 456 | |
| 457 | return (int)(fctx->read(chan) - fence->base.seqno) >= 0; |
| 458 | } |
| 459 | |
| 460 | static bool nouveau_fence_no_signaling(struct fence *f) |
| 461 | { |
| 462 | struct nouveau_fence *fence = from_fence(f); |
| 463 | |
| 464 | /* |
| 465 | * caller should have a reference on the fence, |
| 466 | * else fence could get freed here |
| 467 | */ |
| 468 | WARN_ON(atomic_read(&fence->base.refcount.refcount) <= 1); |
| 469 | |
| 470 | /* |
| 471 | * This needs uevents to work correctly, but fence_add_callback relies on |
| 472 | * being able to enable signaling. It will still get signaled eventually, |
| 473 | * just not right away. |
| 474 | */ |
| 475 | if (nouveau_fence_is_signaled(f)) { |
| 476 | list_del(&fence->head); |
| 477 | |
| 478 | fence_put(&fence->base); |
| 479 | return false; |
| 480 | } |
| 481 | |
| 482 | return true; |
| 483 | } |
| 484 | |
| 485 | static const struct fence_ops nouveau_fence_ops_legacy = { |
| 486 | .get_driver_name = nouveau_fence_get_get_driver_name, |
| 487 | .get_timeline_name = nouveau_fence_get_timeline_name, |
| 488 | .enable_signaling = nouveau_fence_no_signaling, |
| 489 | .signaled = nouveau_fence_is_signaled, |
| 490 | .wait = nouveau_fence_wait_legacy, |
| 491 | .release = NULL |
| 492 | }; |
| 493 | |
| 494 | static bool nouveau_fence_enable_signaling(struct fence *f) |
| 495 | { |
| 496 | struct nouveau_fence *fence = from_fence(f); |
| 497 | struct nouveau_fence_chan *fctx = nouveau_fctx(fence); |
| 498 | bool ret; |
| 499 | |
| 500 | if (!fctx->notify_ref++) |
| 501 | nvif_notify_get(&fctx->notify); |
| 502 | |
| 503 | ret = nouveau_fence_no_signaling(f); |
| 504 | if (ret) |
| 505 | set_bit(FENCE_FLAG_USER_BITS, &fence->base.flags); |
| 506 | else if (!--fctx->notify_ref) |
| 507 | nvif_notify_put(&fctx->notify); |
| 508 | |
| 509 | return ret; |
| 510 | } |
| 511 | |
| 512 | static const struct fence_ops nouveau_fence_ops_uevent = { |
| 513 | .get_driver_name = nouveau_fence_get_get_driver_name, |
| 514 | .get_timeline_name = nouveau_fence_get_timeline_name, |
| 515 | .enable_signaling = nouveau_fence_enable_signaling, |
| 516 | .signaled = nouveau_fence_is_signaled, |
| 517 | .wait = fence_default_wait, |
| 518 | .release = NULL |
| 519 | }; |