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 | 8ed1730 | 2015-11-08 11:28:26 +1000 | [diff] [blame] | 33 | #include <nvif/cl826e.h> |
Ben Skeggs | 867920f | 2014-08-10 04:10:25 +1000 | [diff] [blame] | 34 | #include <nvif/notify.h> |
| 35 | #include <nvif/event.h> |
| 36 | |
Ben Skeggs | 4dc2813 | 2016-05-20 09:22:55 +1000 | [diff] [blame] | 37 | #include "nouveau_drv.h" |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 38 | #include "nouveau_dma.h" |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 39 | #include "nouveau_fence.h" |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 40 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 41 | static const struct fence_ops nouveau_fence_ops_uevent; |
| 42 | static const struct fence_ops nouveau_fence_ops_legacy; |
| 43 | |
| 44 | static inline struct nouveau_fence * |
| 45 | from_fence(struct fence *fence) |
| 46 | { |
| 47 | return container_of(fence, struct nouveau_fence, base); |
| 48 | } |
| 49 | |
| 50 | static inline struct nouveau_fence_chan * |
| 51 | nouveau_fctx(struct nouveau_fence *fence) |
| 52 | { |
| 53 | return container_of(fence->base.lock, struct nouveau_fence_chan, lock); |
| 54 | } |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 55 | |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 56 | static int |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 57 | nouveau_fence_signal(struct nouveau_fence *fence) |
| 58 | { |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 59 | int drop = 0; |
| 60 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 61 | fence_signal_locked(&fence->base); |
| 62 | list_del(&fence->head); |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 63 | rcu_assign_pointer(fence->channel, NULL); |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 64 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 65 | if (test_bit(FENCE_FLAG_USER_BITS, &fence->base.flags)) { |
| 66 | struct nouveau_fence_chan *fctx = nouveau_fctx(fence); |
| 67 | |
| 68 | if (!--fctx->notify_ref) |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 69 | drop = 1; |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 70 | } |
| 71 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 72 | fence_put(&fence->base); |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 73 | return drop; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 74 | } |
| 75 | |
| 76 | static struct nouveau_fence * |
| 77 | nouveau_local_fence(struct fence *fence, struct nouveau_drm *drm) { |
| 78 | struct nouveau_fence_priv *priv = (void*)drm->fence; |
| 79 | |
| 80 | if (fence->ops != &nouveau_fence_ops_legacy && |
| 81 | fence->ops != &nouveau_fence_ops_uevent) |
| 82 | return NULL; |
| 83 | |
| 84 | if (fence->context < priv->context_base || |
| 85 | fence->context >= priv->context_base + priv->contexts) |
| 86 | return NULL; |
| 87 | |
| 88 | return from_fence(fence); |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 89 | } |
| 90 | |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 91 | void |
| 92 | nouveau_fence_context_del(struct nouveau_fence_chan *fctx) |
| 93 | { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 94 | struct nouveau_fence *fence; |
| 95 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 96 | spin_lock_irq(&fctx->lock); |
| 97 | while (!list_empty(&fctx->pending)) { |
| 98 | fence = list_entry(fctx->pending.next, typeof(*fence), head); |
| 99 | |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 100 | if (nouveau_fence_signal(fence)) |
| 101 | nvif_notify_put(&fctx->notify); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 102 | } |
| 103 | spin_unlock_irq(&fctx->lock); |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 104 | |
| 105 | nvif_notify_fini(&fctx->notify); |
| 106 | fctx->dead = 1; |
| 107 | |
| 108 | /* |
| 109 | * Ensure that all accesses to fence->channel complete before freeing |
| 110 | * the channel. |
| 111 | */ |
| 112 | synchronize_rcu(); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 113 | } |
| 114 | |
| 115 | static void |
Maarten Lankhorst | 15a996b | 2014-09-29 10:06:18 +0200 | [diff] [blame] | 116 | nouveau_fence_context_put(struct kref *fence_ref) |
| 117 | { |
| 118 | kfree(container_of(fence_ref, struct nouveau_fence_chan, fence_ref)); |
| 119 | } |
| 120 | |
| 121 | void |
| 122 | nouveau_fence_context_free(struct nouveau_fence_chan *fctx) |
| 123 | { |
| 124 | kref_put(&fctx->fence_ref, nouveau_fence_context_put); |
| 125 | } |
| 126 | |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 127 | static int |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 128 | nouveau_fence_update(struct nouveau_channel *chan, struct nouveau_fence_chan *fctx) |
| 129 | { |
| 130 | struct nouveau_fence *fence; |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 131 | int drop = 0; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 132 | u32 seq = fctx->read(chan); |
| 133 | |
| 134 | while (!list_empty(&fctx->pending)) { |
| 135 | fence = list_entry(fctx->pending.next, typeof(*fence), head); |
| 136 | |
| 137 | if ((int)(seq - fence->base.seqno) < 0) |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 138 | break; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 139 | |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 140 | drop |= nouveau_fence_signal(fence); |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 141 | } |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 142 | |
| 143 | return drop; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | static int |
| 147 | nouveau_fence_wait_uevent_handler(struct nvif_notify *notify) |
| 148 | { |
| 149 | struct nouveau_fence_chan *fctx = |
| 150 | container_of(notify, typeof(*fctx), notify); |
| 151 | unsigned long flags; |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 152 | int ret = NVIF_NOTIFY_KEEP; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 153 | |
| 154 | spin_lock_irqsave(&fctx->lock, flags); |
| 155 | if (!list_empty(&fctx->pending)) { |
| 156 | struct nouveau_fence *fence; |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 157 | struct nouveau_channel *chan; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 158 | |
| 159 | fence = list_entry(fctx->pending.next, typeof(*fence), head); |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 160 | chan = rcu_dereference_protected(fence->channel, lockdep_is_held(&fctx->lock)); |
| 161 | if (nouveau_fence_update(fence->channel, fctx)) |
| 162 | ret = NVIF_NOTIFY_DROP; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 163 | } |
| 164 | spin_unlock_irqrestore(&fctx->lock, flags); |
| 165 | |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 166 | return ret; |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | void |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 170 | 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] | 171 | { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 172 | struct nouveau_fence_priv *priv = (void*)chan->drm->fence; |
Ben Skeggs | a01ca78 | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 173 | struct nouveau_cli *cli = (void *)chan->user.client; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 174 | int ret; |
| 175 | |
Ben Skeggs | f589be8 | 2012-07-22 11:55:54 +1000 | [diff] [blame] | 176 | INIT_LIST_HEAD(&fctx->flip); |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 177 | INIT_LIST_HEAD(&fctx->pending); |
| 178 | spin_lock_init(&fctx->lock); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 179 | fctx->context = priv->context_base + chan->chid; |
| 180 | |
Maarten Lankhorst | 15a996b | 2014-09-29 10:06:18 +0200 | [diff] [blame] | 181 | if (chan == chan->drm->cechan) |
| 182 | strcpy(fctx->name, "copy engine channel"); |
| 183 | else if (chan == chan->drm->channel) |
| 184 | strcpy(fctx->name, "generic kernel channel"); |
| 185 | else |
Ben Skeggs | 989aa5b | 2015-01-12 12:33:37 +1000 | [diff] [blame] | 186 | strcpy(fctx->name, nvxx_client(&cli->base)->name); |
Maarten Lankhorst | 15a996b | 2014-09-29 10:06:18 +0200 | [diff] [blame] | 187 | |
| 188 | kref_init(&fctx->fence_ref); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 189 | if (!priv->uevent) |
| 190 | return; |
| 191 | |
Ben Skeggs | a01ca78 | 2015-08-20 14:54:15 +1000 | [diff] [blame] | 192 | ret = nvif_notify_init(&chan->user, nouveau_fence_wait_uevent_handler, |
| 193 | false, G82_CHANNEL_DMA_V0_NTFY_UEVENT, |
| 194 | &(struct nvif_notify_uevent_req) { }, |
| 195 | sizeof(struct nvif_notify_uevent_req), |
| 196 | sizeof(struct nvif_notify_uevent_rep), |
| 197 | &fctx->notify); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 198 | |
| 199 | WARN_ON(ret); |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 200 | } |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 201 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 202 | struct nouveau_fence_work { |
| 203 | struct work_struct work; |
| 204 | struct fence_cb cb; |
| 205 | void (*func)(void *); |
| 206 | void *data; |
| 207 | }; |
| 208 | |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 209 | static void |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 210 | nouveau_fence_work_handler(struct work_struct *kwork) |
| 211 | { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 212 | struct nouveau_fence_work *work = container_of(kwork, typeof(*work), work); |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 213 | work->func(work->data); |
| 214 | kfree(work); |
| 215 | } |
| 216 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 217 | static void nouveau_fence_work_cb(struct fence *fence, struct fence_cb *cb) |
| 218 | { |
| 219 | struct nouveau_fence_work *work = container_of(cb, typeof(*work), cb); |
| 220 | |
| 221 | schedule_work(&work->work); |
| 222 | } |
| 223 | |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 224 | void |
Maarten Lankhorst | f2c24b8 | 2014-04-02 17:14:48 +0200 | [diff] [blame] | 225 | nouveau_fence_work(struct fence *fence, |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 226 | void (*func)(void *), void *data) |
| 227 | { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 228 | struct nouveau_fence_work *work; |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 229 | |
Maarten Lankhorst | f2c24b8 | 2014-04-02 17:14:48 +0200 | [diff] [blame] | 230 | if (fence_is_signaled(fence)) |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 231 | goto err; |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 232 | |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 233 | work = kmalloc(sizeof(*work), GFP_KERNEL); |
| 234 | if (!work) { |
Maarten Lankhorst | bb6178b | 2014-01-09 11:03:15 +0100 | [diff] [blame] | 235 | /* |
| 236 | * this might not be a nouveau fence any more, |
| 237 | * so force a lazy wait here |
| 238 | */ |
Maarten Lankhorst | f2c24b8 | 2014-04-02 17:14:48 +0200 | [diff] [blame] | 239 | WARN_ON(nouveau_fence_wait((struct nouveau_fence *)fence, |
Maarten Lankhorst | bb6178b | 2014-01-09 11:03:15 +0100 | [diff] [blame] | 240 | true, false)); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 241 | goto err; |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 242 | } |
| 243 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 244 | INIT_WORK(&work->work, nouveau_fence_work_handler); |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 245 | work->func = func; |
| 246 | work->data = data; |
Ben Skeggs | c4c7044 | 2013-05-07 09:48:30 +1000 | [diff] [blame] | 247 | |
Maarten Lankhorst | f2c24b8 | 2014-04-02 17:14:48 +0200 | [diff] [blame] | 248 | if (fence_add_callback(fence, &work->cb, nouveau_fence_work_cb) < 0) |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 249 | goto err_free; |
| 250 | return; |
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 | err_free: |
| 253 | kfree(work); |
| 254 | err: |
| 255 | func(data); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 256 | } |
| 257 | |
| 258 | int |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 259 | nouveau_fence_emit(struct nouveau_fence *fence, struct nouveau_channel *chan) |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 260 | { |
Ben Skeggs | e193b1d | 2012-07-19 10:51:42 +1000 | [diff] [blame] | 261 | struct nouveau_fence_chan *fctx = chan->fence; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 262 | struct nouveau_fence_priv *priv = (void*)chan->drm->fence; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 263 | int ret; |
| 264 | |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 265 | fence->channel = chan; |
Daniel Vetter | bfd8303 | 2013-12-11 11:34:41 +0100 | [diff] [blame] | 266 | fence->timeout = jiffies + (15 * HZ); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 267 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 268 | if (priv->uevent) |
| 269 | fence_init(&fence->base, &nouveau_fence_ops_uevent, |
Maarten Lankhorst | e3be4c2 | 2014-09-16 11:15:07 +0200 | [diff] [blame] | 270 | &fctx->lock, fctx->context, ++fctx->sequence); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 271 | else |
| 272 | fence_init(&fence->base, &nouveau_fence_ops_legacy, |
Maarten Lankhorst | e3be4c2 | 2014-09-16 11:15:07 +0200 | [diff] [blame] | 273 | &fctx->lock, fctx->context, ++fctx->sequence); |
Maarten Lankhorst | 15a996b | 2014-09-29 10:06:18 +0200 | [diff] [blame] | 274 | kref_get(&fctx->fence_ref); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 275 | |
| 276 | trace_fence_emit(&fence->base); |
Ben Skeggs | 827520c | 2013-02-14 13:20:17 +1000 | [diff] [blame] | 277 | ret = fctx->emit(fence); |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 278 | if (!ret) { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 279 | fence_get(&fence->base); |
| 280 | spin_lock_irq(&fctx->lock); |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 281 | |
| 282 | if (nouveau_fence_update(chan, fctx)) |
| 283 | nvif_notify_put(&fctx->notify); |
| 284 | |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 285 | list_add_tail(&fence->head, &fctx->pending); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 286 | spin_unlock_irq(&fctx->lock); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 287 | } |
| 288 | |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 289 | return ret; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 290 | } |
| 291 | |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 292 | bool |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 293 | nouveau_fence_done(struct nouveau_fence *fence) |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 294 | { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 295 | if (fence->base.ops == &nouveau_fence_ops_legacy || |
| 296 | fence->base.ops == &nouveau_fence_ops_uevent) { |
| 297 | struct nouveau_fence_chan *fctx = nouveau_fctx(fence); |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 298 | struct nouveau_channel *chan; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 299 | unsigned long flags; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 300 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 301 | if (test_bit(FENCE_FLAG_SIGNALED_BIT, &fence->base.flags)) |
| 302 | return true; |
Ben Skeggs | 79ca277 | 2014-08-10 04:10:20 +1000 | [diff] [blame] | 303 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 304 | spin_lock_irqsave(&fctx->lock, flags); |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 305 | chan = rcu_dereference_protected(fence->channel, lockdep_is_held(&fctx->lock)); |
| 306 | if (chan && nouveau_fence_update(chan, fctx)) |
| 307 | nvif_notify_put(&fctx->notify); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 308 | spin_unlock_irqrestore(&fctx->lock, flags); |
Ben Skeggs | e18c080 | 2013-01-31 14:57:33 +1000 | [diff] [blame] | 309 | } |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 310 | return fence_is_signaled(&fence->base); |
Ben Skeggs | e18c080 | 2013-01-31 14:57:33 +1000 | [diff] [blame] | 311 | } |
| 312 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 313 | static long |
| 314 | nouveau_fence_wait_legacy(struct fence *f, bool intr, long wait) |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 315 | { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 316 | struct nouveau_fence *fence = from_fence(f); |
Marcin Slusarz | bd35fe5 | 2011-03-09 14:22:19 +0100 | [diff] [blame] | 317 | unsigned long sleep_time = NSEC_PER_MSEC / 1000; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 318 | unsigned long t = jiffies, timeout = t + wait; |
Ben Skeggs | e18c080 | 2013-01-31 14:57:33 +1000 | [diff] [blame] | 319 | |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 320 | while (!nouveau_fence_done(fence)) { |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 321 | ktime_t kt; |
| 322 | |
| 323 | t = jiffies; |
| 324 | |
| 325 | if (wait != MAX_SCHEDULE_TIMEOUT && time_after_eq(t, timeout)) { |
| 326 | __set_current_state(TASK_RUNNING); |
| 327 | return 0; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 328 | } |
| 329 | |
Ben Skeggs | 875ac34 | 2012-04-30 12:51:48 +1000 | [diff] [blame] | 330 | __set_current_state(intr ? TASK_INTERRUPTIBLE : |
| 331 | TASK_UNINTERRUPTIBLE); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 332 | |
| 333 | kt = ktime_set(0, sleep_time); |
| 334 | schedule_hrtimeout(&kt, HRTIMER_MODE_REL); |
| 335 | sleep_time *= 2; |
| 336 | if (sleep_time > NSEC_PER_MSEC) |
| 337 | sleep_time = NSEC_PER_MSEC; |
| 338 | |
| 339 | if (intr && signal_pending(current)) |
| 340 | return -ERESTARTSYS; |
| 341 | } |
| 342 | |
| 343 | __set_current_state(TASK_RUNNING); |
| 344 | |
| 345 | return timeout - t; |
| 346 | } |
| 347 | |
| 348 | static int |
| 349 | nouveau_fence_wait_busy(struct nouveau_fence *fence, bool intr) |
| 350 | { |
| 351 | int ret = 0; |
| 352 | |
| 353 | while (!nouveau_fence_done(fence)) { |
| 354 | if (time_after_eq(jiffies, fence->timeout)) { |
| 355 | ret = -EBUSY; |
| 356 | break; |
Marcin Slusarz | bd35fe5 | 2011-03-09 14:22:19 +0100 | [diff] [blame] | 357 | } |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 358 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 359 | __set_current_state(intr ? |
| 360 | TASK_INTERRUPTIBLE : |
| 361 | TASK_UNINTERRUPTIBLE); |
| 362 | |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 363 | if (intr && signal_pending(current)) { |
Ben Skeggs | 9ddc8c5 | 2009-12-15 11:04:25 +1000 | [diff] [blame] | 364 | ret = -ERESTARTSYS; |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 365 | break; |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | __set_current_state(TASK_RUNNING); |
Ben Skeggs | 6ee7386 | 2009-12-11 19:24:15 +1000 | [diff] [blame] | 370 | return ret; |
| 371 | } |
| 372 | |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 373 | int |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 374 | nouveau_fence_wait(struct nouveau_fence *fence, bool lazy, bool intr) |
| 375 | { |
| 376 | long ret; |
| 377 | |
| 378 | if (!lazy) |
| 379 | return nouveau_fence_wait_busy(fence, intr); |
| 380 | |
| 381 | ret = fence_wait_timeout(&fence->base, intr, 15 * HZ); |
| 382 | if (ret < 0) |
| 383 | return ret; |
| 384 | else if (!ret) |
| 385 | return -EBUSY; |
| 386 | else |
| 387 | return 0; |
| 388 | } |
| 389 | |
| 390 | int |
Maarten Lankhorst | e3be4c2 | 2014-09-16 11:15:07 +0200 | [diff] [blame] | 391 | nouveau_fence_sync(struct nouveau_bo *nvbo, struct nouveau_channel *chan, bool exclusive, bool intr) |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 392 | { |
Ben Skeggs | 827520c | 2013-02-14 13:20:17 +1000 | [diff] [blame] | 393 | struct nouveau_fence_chan *fctx = chan->fence; |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 394 | struct fence *fence; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 395 | struct reservation_object *resv = nvbo->bo.resv; |
| 396 | struct reservation_object_list *fobj; |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 397 | struct nouveau_fence *f; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 398 | int ret = 0, i; |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 399 | |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 400 | if (!exclusive) { |
| 401 | ret = reservation_object_reserve_shared(resv); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 402 | |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 403 | if (ret) |
| 404 | return ret; |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 405 | } |
| 406 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 407 | fobj = reservation_object_get_list(resv); |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 408 | fence = reservation_object_get_excl(resv); |
| 409 | |
| 410 | if (fence && (!exclusive || !fobj || !fobj->shared_count)) { |
| 411 | struct nouveau_channel *prev = NULL; |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 412 | bool must_wait = true; |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 413 | |
| 414 | f = nouveau_local_fence(fence, chan->drm); |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 415 | if (f) { |
| 416 | rcu_read_lock(); |
| 417 | prev = rcu_dereference(f->channel); |
| 418 | if (prev && (prev == chan || fctx->sync(f, prev, chan) == 0)) |
| 419 | must_wait = false; |
| 420 | rcu_read_unlock(); |
| 421 | } |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 422 | |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 423 | if (must_wait) |
Maarten Lankhorst | e3be4c2 | 2014-09-16 11:15:07 +0200 | [diff] [blame] | 424 | ret = fence_wait(fence, intr); |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 425 | |
| 426 | return ret; |
| 427 | } |
| 428 | |
| 429 | if (!exclusive || !fobj) |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 430 | return ret; |
| 431 | |
| 432 | for (i = 0; i < fobj->shared_count && !ret; ++i) { |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 433 | struct nouveau_channel *prev = NULL; |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 434 | bool must_wait = true; |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 435 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 436 | fence = rcu_dereference_protected(fobj->shared[i], |
| 437 | reservation_object_held(resv)); |
| 438 | |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 439 | f = nouveau_local_fence(fence, chan->drm); |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 440 | if (f) { |
| 441 | rcu_read_lock(); |
| 442 | prev = rcu_dereference(f->channel); |
| 443 | if (prev && (prev == chan || fctx->sync(f, prev, chan) == 0)) |
| 444 | must_wait = false; |
| 445 | rcu_read_unlock(); |
| 446 | } |
Maarten Lankhorst | 809e944 | 2014-04-09 16:19:30 +0200 | [diff] [blame] | 447 | |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 448 | if (must_wait) |
Maarten Lankhorst | e3be4c2 | 2014-09-16 11:15:07 +0200 | [diff] [blame] | 449 | ret = fence_wait(fence, intr); |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 450 | } |
| 451 | |
| 452 | return ret; |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 453 | } |
| 454 | |
| 455 | void |
| 456 | nouveau_fence_unref(struct nouveau_fence **pfence) |
| 457 | { |
| 458 | if (*pfence) |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 459 | fence_put(&(*pfence)->base); |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 460 | *pfence = NULL; |
| 461 | } |
| 462 | |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 463 | int |
Ben Skeggs | 264ce19 | 2013-02-14 13:43:21 +1000 | [diff] [blame] | 464 | nouveau_fence_new(struct nouveau_channel *chan, bool sysmem, |
| 465 | struct nouveau_fence **pfence) |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 466 | { |
| 467 | struct nouveau_fence *fence; |
| 468 | int ret = 0; |
| 469 | |
Ben Skeggs | e193b1d | 2012-07-19 10:51:42 +1000 | [diff] [blame] | 470 | if (unlikely(!chan->fence)) |
Ben Skeggs | 5e120f6 | 2012-04-30 13:55:29 +1000 | [diff] [blame] | 471 | return -ENODEV; |
| 472 | |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 473 | fence = kzalloc(sizeof(*fence), GFP_KERNEL); |
| 474 | if (!fence) |
| 475 | return -ENOMEM; |
Ben Skeggs | 264ce19 | 2013-02-14 13:43:21 +1000 | [diff] [blame] | 476 | |
| 477 | fence->sysmem = sysmem; |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 478 | |
Cong Ding | b5d8f05 | 2013-01-15 18:19:49 +0100 | [diff] [blame] | 479 | ret = nouveau_fence_emit(fence, chan); |
| 480 | if (ret) |
| 481 | nouveau_fence_unref(&fence); |
Ben Skeggs | d375e7d5 | 2012-04-30 13:30:00 +1000 | [diff] [blame] | 482 | |
| 483 | *pfence = fence; |
| 484 | return ret; |
| 485 | } |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 486 | |
| 487 | static const char *nouveau_fence_get_get_driver_name(struct fence *fence) |
| 488 | { |
| 489 | return "nouveau"; |
| 490 | } |
| 491 | |
| 492 | static const char *nouveau_fence_get_timeline_name(struct fence *f) |
| 493 | { |
| 494 | struct nouveau_fence *fence = from_fence(f); |
| 495 | struct nouveau_fence_chan *fctx = nouveau_fctx(fence); |
| 496 | |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 497 | return !fctx->dead ? fctx->name : "dead channel"; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 498 | } |
| 499 | |
| 500 | /* |
| 501 | * In an ideal world, read would not assume the channel context is still alive. |
| 502 | * This function may be called from another device, running into free memory as a |
| 503 | * result. The drm node should still be there, so we can derive the index from |
| 504 | * the fence context. |
| 505 | */ |
| 506 | static bool nouveau_fence_is_signaled(struct fence *f) |
| 507 | { |
| 508 | struct nouveau_fence *fence = from_fence(f); |
| 509 | struct nouveau_fence_chan *fctx = nouveau_fctx(fence); |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 510 | struct nouveau_channel *chan; |
| 511 | bool ret = false; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 512 | |
Maarten Lankhorst | 0ec5f02 | 2014-12-01 19:11:06 +1000 | [diff] [blame] | 513 | rcu_read_lock(); |
| 514 | chan = rcu_dereference(fence->channel); |
| 515 | if (chan) |
| 516 | ret = (int)(fctx->read(chan) - fence->base.seqno) >= 0; |
| 517 | rcu_read_unlock(); |
| 518 | |
| 519 | return ret; |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 520 | } |
| 521 | |
| 522 | static bool nouveau_fence_no_signaling(struct fence *f) |
| 523 | { |
| 524 | struct nouveau_fence *fence = from_fence(f); |
| 525 | |
| 526 | /* |
| 527 | * caller should have a reference on the fence, |
| 528 | * else fence could get freed here |
| 529 | */ |
| 530 | WARN_ON(atomic_read(&fence->base.refcount.refcount) <= 1); |
| 531 | |
| 532 | /* |
| 533 | * This needs uevents to work correctly, but fence_add_callback relies on |
| 534 | * being able to enable signaling. It will still get signaled eventually, |
| 535 | * just not right away. |
| 536 | */ |
| 537 | if (nouveau_fence_is_signaled(f)) { |
| 538 | list_del(&fence->head); |
| 539 | |
| 540 | fence_put(&fence->base); |
| 541 | return false; |
| 542 | } |
| 543 | |
| 544 | return true; |
| 545 | } |
| 546 | |
Maarten Lankhorst | 15a996b | 2014-09-29 10:06:18 +0200 | [diff] [blame] | 547 | static void nouveau_fence_release(struct fence *f) |
| 548 | { |
| 549 | struct nouveau_fence *fence = from_fence(f); |
| 550 | struct nouveau_fence_chan *fctx = nouveau_fctx(fence); |
| 551 | |
| 552 | kref_put(&fctx->fence_ref, nouveau_fence_context_put); |
| 553 | fence_free(&fence->base); |
| 554 | } |
| 555 | |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 556 | static const struct fence_ops nouveau_fence_ops_legacy = { |
| 557 | .get_driver_name = nouveau_fence_get_get_driver_name, |
| 558 | .get_timeline_name = nouveau_fence_get_timeline_name, |
| 559 | .enable_signaling = nouveau_fence_no_signaling, |
| 560 | .signaled = nouveau_fence_is_signaled, |
| 561 | .wait = nouveau_fence_wait_legacy, |
Maarten Lankhorst | 15a996b | 2014-09-29 10:06:18 +0200 | [diff] [blame] | 562 | .release = nouveau_fence_release |
Maarten Lankhorst | 29ba89b | 2014-01-09 11:03:11 +0100 | [diff] [blame] | 563 | }; |
| 564 | |
| 565 | static bool nouveau_fence_enable_signaling(struct fence *f) |
| 566 | { |
| 567 | struct nouveau_fence *fence = from_fence(f); |
| 568 | struct nouveau_fence_chan *fctx = nouveau_fctx(fence); |
| 569 | bool ret; |
| 570 | |
| 571 | if (!fctx->notify_ref++) |
| 572 | nvif_notify_get(&fctx->notify); |
| 573 | |
| 574 | ret = nouveau_fence_no_signaling(f); |
| 575 | if (ret) |
| 576 | set_bit(FENCE_FLAG_USER_BITS, &fence->base.flags); |
| 577 | else if (!--fctx->notify_ref) |
| 578 | nvif_notify_put(&fctx->notify); |
| 579 | |
| 580 | return ret; |
| 581 | } |
| 582 | |
| 583 | static const struct fence_ops nouveau_fence_ops_uevent = { |
| 584 | .get_driver_name = nouveau_fence_get_get_driver_name, |
| 585 | .get_timeline_name = nouveau_fence_get_timeline_name, |
| 586 | .enable_signaling = nouveau_fence_enable_signaling, |
| 587 | .signaled = nouveau_fence_is_signaled, |
| 588 | .wait = fence_default_wait, |
| 589 | .release = NULL |
| 590 | }; |