Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2012 Red Hat Inc. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice shall be included in |
| 12 | * all copies or substantial portions of the Software. |
| 13 | * |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 20 | * OTHER DEALINGS IN THE SOFTWARE. |
| 21 | * |
| 22 | * Authors: Ben Skeggs <bskeggs@redhat.com> |
| 23 | */ |
| 24 | |
| 25 | #include "nouveau_drm.h" |
| 26 | #include "nouveau_dma.h" |
| 27 | #include "nv10_fence.h" |
| 28 | |
| 29 | int |
| 30 | nv10_fence_emit(struct nouveau_fence *fence) |
| 31 | { |
| 32 | struct nouveau_channel *chan = fence->channel; |
| 33 | int ret = RING_SPACE(chan, 2); |
| 34 | if (ret == 0) { |
| 35 | BEGIN_NV04(chan, 0, NV10_SUBCHAN_REF_CNT, 1); |
| 36 | OUT_RING (chan, fence->base.seqno); |
| 37 | FIRE_RING (chan); |
| 38 | } |
| 39 | return ret; |
| 40 | } |
| 41 | |
| 42 | |
| 43 | static int |
| 44 | nv10_fence_sync(struct nouveau_fence *fence, |
| 45 | struct nouveau_channel *prev, struct nouveau_channel *chan) |
| 46 | { |
| 47 | return -ENODEV; |
| 48 | } |
| 49 | |
| 50 | u32 |
| 51 | nv10_fence_read(struct nouveau_channel *chan) |
| 52 | { |
| 53 | return nvif_rd32(&chan->user, 0x0048); |
| 54 | } |
| 55 | |
| 56 | void |
| 57 | nv10_fence_context_del(struct nouveau_channel *chan) |
| 58 | { |
| 59 | struct nv10_fence_chan *fctx = chan->fence; |
| 60 | int i; |
| 61 | nouveau_fence_context_del(&fctx->base); |
| 62 | for (i = 0; i < ARRAY_SIZE(fctx->head); i++) |
| 63 | nvif_object_fini(&fctx->head[i]); |
| 64 | nvif_object_fini(&fctx->sema); |
| 65 | chan->fence = NULL; |
| 66 | nouveau_fence_context_free(&fctx->base); |
| 67 | } |
| 68 | |
| 69 | int |
| 70 | nv10_fence_context_new(struct nouveau_channel *chan) |
| 71 | { |
| 72 | struct nv10_fence_chan *fctx; |
| 73 | |
| 74 | fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL); |
| 75 | if (!fctx) |
| 76 | return -ENOMEM; |
| 77 | |
| 78 | nouveau_fence_context_new(chan, &fctx->base); |
| 79 | fctx->base.emit = nv10_fence_emit; |
| 80 | fctx->base.read = nv10_fence_read; |
| 81 | fctx->base.sync = nv10_fence_sync; |
| 82 | return 0; |
| 83 | } |
| 84 | |
| 85 | void |
| 86 | nv10_fence_destroy(struct nouveau_drm *drm) |
| 87 | { |
| 88 | struct nv10_fence_priv *priv = drm->fence; |
| 89 | nouveau_bo_unmap(priv->bo); |
| 90 | if (priv->bo) |
| 91 | nouveau_bo_unpin(priv->bo); |
| 92 | nouveau_bo_ref(NULL, &priv->bo); |
| 93 | drm->fence = NULL; |
| 94 | kfree(priv); |
| 95 | } |
| 96 | |
| 97 | int |
| 98 | nv10_fence_create(struct nouveau_drm *drm) |
| 99 | { |
| 100 | struct nv10_fence_priv *priv; |
| 101 | |
| 102 | priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL); |
| 103 | if (!priv) |
| 104 | return -ENOMEM; |
| 105 | |
| 106 | priv->base.dtor = nv10_fence_destroy; |
| 107 | priv->base.context_new = nv10_fence_context_new; |
| 108 | priv->base.context_del = nv10_fence_context_del; |
| 109 | priv->base.contexts = 31; |
| 110 | priv->base.context_base = fence_context_alloc(priv->base.contexts); |
| 111 | spin_lock_init(&priv->lock); |
| 112 | return 0; |
| 113 | } |