From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- drivers/gpu/drm/nouveau/nv10_fence.c | 113 +++++++++++++++++++++++++++++++++++ 1 file changed, 113 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nv10_fence.c (limited to 'drivers/gpu/drm/nouveau/nv10_fence.c') diff --git a/drivers/gpu/drm/nouveau/nv10_fence.c b/drivers/gpu/drm/nouveau/nv10_fence.c new file mode 100644 index 000000000..5e1ea1cdc --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv10_fence.c @@ -0,0 +1,113 @@ +/* + * Copyright 2012 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs + */ + +#include "nouveau_drm.h" +#include "nouveau_dma.h" +#include "nv10_fence.h" + +int +nv10_fence_emit(struct nouveau_fence *fence) +{ + struct nouveau_channel *chan = fence->channel; + int ret = RING_SPACE(chan, 2); + if (ret == 0) { + BEGIN_NV04(chan, 0, NV10_SUBCHAN_REF_CNT, 1); + OUT_RING (chan, fence->base.seqno); + FIRE_RING (chan); + } + return ret; +} + + +static int +nv10_fence_sync(struct nouveau_fence *fence, + struct nouveau_channel *prev, struct nouveau_channel *chan) +{ + return -ENODEV; +} + +u32 +nv10_fence_read(struct nouveau_channel *chan) +{ + return nvif_rd32(chan, 0x0048); +} + +void +nv10_fence_context_del(struct nouveau_channel *chan) +{ + struct nv10_fence_chan *fctx = chan->fence; + int i; + nouveau_fence_context_del(&fctx->base); + for (i = 0; i < ARRAY_SIZE(fctx->head); i++) + nvif_object_fini(&fctx->head[i]); + nvif_object_fini(&fctx->sema); + chan->fence = NULL; + nouveau_fence_context_free(&fctx->base); +} + +int +nv10_fence_context_new(struct nouveau_channel *chan) +{ + struct nv10_fence_chan *fctx; + + fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL); + if (!fctx) + return -ENOMEM; + + nouveau_fence_context_new(chan, &fctx->base); + fctx->base.emit = nv10_fence_emit; + fctx->base.read = nv10_fence_read; + fctx->base.sync = nv10_fence_sync; + return 0; +} + +void +nv10_fence_destroy(struct nouveau_drm *drm) +{ + struct nv10_fence_priv *priv = drm->fence; + nouveau_bo_unmap(priv->bo); + if (priv->bo) + nouveau_bo_unpin(priv->bo); + nouveau_bo_ref(NULL, &priv->bo); + drm->fence = NULL; + kfree(priv); +} + +int +nv10_fence_create(struct nouveau_drm *drm) +{ + struct nv10_fence_priv *priv; + + priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->base.dtor = nv10_fence_destroy; + priv->base.context_new = nv10_fence_context_new; + priv->base.context_del = nv10_fence_context_del; + priv->base.contexts = 31; + priv->base.context_base = fence_context_alloc(priv->base.contexts); + spin_lock_init(&priv->lock); + return 0; +} -- cgit v1.2.3-54-g00ecf