From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/gpu/drm/nouveau/nv04_fence.c | 111 ++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 kernel/drivers/gpu/drm/nouveau/nv04_fence.c (limited to 'kernel/drivers/gpu/drm/nouveau/nv04_fence.c') diff --git a/kernel/drivers/gpu/drm/nouveau/nv04_fence.c b/kernel/drivers/gpu/drm/nouveau/nv04_fence.c new file mode 100644 index 000000000..c2e05e64c --- /dev/null +++ b/kernel/drivers/gpu/drm/nouveau/nv04_fence.c @@ -0,0 +1,111 @@ +/* + * 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 "nouveau_fence.h" + +struct nv04_fence_chan { + struct nouveau_fence_chan base; +}; + +struct nv04_fence_priv { + struct nouveau_fence_priv base; +}; + +static int +nv04_fence_emit(struct nouveau_fence *fence) +{ + struct nouveau_channel *chan = fence->channel; + int ret = RING_SPACE(chan, 2); + if (ret == 0) { + BEGIN_NV04(chan, NvSubSw, 0x0150, 1); + OUT_RING (chan, fence->base.seqno); + FIRE_RING (chan); + } + return ret; +} + +static int +nv04_fence_sync(struct nouveau_fence *fence, + struct nouveau_channel *prev, struct nouveau_channel *chan) +{ + return -ENODEV; +} + +static u32 +nv04_fence_read(struct nouveau_channel *chan) +{ + struct nvkm_fifo_chan *fifo = nvxx_fifo_chan(chan);; + return atomic_read(&fifo->refcnt); +} + +static void +nv04_fence_context_del(struct nouveau_channel *chan) +{ + struct nv04_fence_chan *fctx = chan->fence; + nouveau_fence_context_del(&fctx->base); + chan->fence = NULL; + nouveau_fence_context_free(&fctx->base); +} + +static int +nv04_fence_context_new(struct nouveau_channel *chan) +{ + struct nv04_fence_chan *fctx = kzalloc(sizeof(*fctx), GFP_KERNEL); + if (fctx) { + nouveau_fence_context_new(chan, &fctx->base); + fctx->base.emit = nv04_fence_emit; + fctx->base.sync = nv04_fence_sync; + fctx->base.read = nv04_fence_read; + chan->fence = fctx; + return 0; + } + return -ENOMEM; +} + +static void +nv04_fence_destroy(struct nouveau_drm *drm) +{ + struct nv04_fence_priv *priv = drm->fence; + drm->fence = NULL; + kfree(priv); +} + +int +nv04_fence_create(struct nouveau_drm *drm) +{ + struct nv04_fence_priv *priv; + + priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->base.dtor = nv04_fence_destroy; + priv->base.context_new = nv04_fence_context_new; + priv->base.context_del = nv04_fence_context_del; + priv->base.contexts = 15; + priv->base.context_base = fence_context_alloc(priv->base.contexts); + return 0; +} -- cgit 1.2.3-korg