diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvc0_fence.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvc0_fence.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvc0_fence.c b/drivers/gpu/drm/nouveau/nvc0_fence.c new file mode 100644 index 0000000..47ab388 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvc0_fence.c @@ -0,0 +1,184 @@ +/* + * 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 "drmP.h" +#include "nouveau_drv.h" +#include "nouveau_dma.h" +#include "nouveau_fifo.h" +#include "nouveau_ramht.h" +#include "nouveau_fence.h" + +struct nvc0_fence_priv { + struct nouveau_fence_priv base; + struct nouveau_bo *bo; +}; + +struct nvc0_fence_chan { + struct nouveau_fence_chan base; + struct nouveau_vma vma; +}; + +static int +nvc0_fence_emit(struct nouveau_fence *fence) +{ + struct nouveau_channel *chan = fence->channel; + struct nvc0_fence_chan *fctx = chan->engctx[NVOBJ_ENGINE_FENCE]; + u64 addr = fctx->vma.offset + chan->id * 16; + int ret; + + ret = RING_SPACE(chan, 5); + if (ret == 0) { + BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); + OUT_RING (chan, upper_32_bits(addr)); + OUT_RING (chan, lower_32_bits(addr)); + OUT_RING (chan, fence->sequence); + OUT_RING (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_WRITE_LONG); + FIRE_RING (chan); + } + + return ret; +} + +static int +nvc0_fence_sync(struct nouveau_fence *fence, + struct nouveau_channel *prev, struct nouveau_channel *chan) +{ + struct nvc0_fence_chan *fctx = chan->engctx[NVOBJ_ENGINE_FENCE]; + u64 addr = fctx->vma.offset + prev->id * 16; + int ret; + + ret = RING_SPACE(chan, 5); + if (ret == 0) { + BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); + OUT_RING (chan, upper_32_bits(addr)); + OUT_RING (chan, lower_32_bits(addr)); + OUT_RING (chan, fence->sequence); + OUT_RING (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_GEQUAL | + NVC0_SUBCHAN_SEMAPHORE_TRIGGER_YIELD); + FIRE_RING (chan); + } + + return ret; +} + +static u32 +nvc0_fence_read(struct nouveau_channel *chan) +{ + struct nvc0_fence_priv *priv = nv_engine(chan->dev, NVOBJ_ENGINE_FENCE); + return nouveau_bo_rd32(priv->bo, chan->id * 16/4); +} + +static void +nvc0_fence_context_del(struct nouveau_channel *chan, int engine) +{ + struct nvc0_fence_priv *priv = nv_engine(chan->dev, engine); + struct nvc0_fence_chan *fctx = chan->engctx[engine]; + + nouveau_bo_vma_del(priv->bo, &fctx->vma); + nouveau_fence_context_del(&fctx->base); + chan->engctx[engine] = NULL; + kfree(fctx); +} + +static int +nvc0_fence_context_new(struct nouveau_channel *chan, int engine) +{ + struct nvc0_fence_priv *priv = nv_engine(chan->dev, engine); + struct nvc0_fence_chan *fctx; + int ret; + + fctx = chan->engctx[engine] = kzalloc(sizeof(*fctx), GFP_KERNEL); + if (!fctx) + return -ENOMEM; + + nouveau_fence_context_new(&fctx->base); + + ret = nouveau_bo_vma_add(priv->bo, chan->vm, &fctx->vma); + if (ret) + nvc0_fence_context_del(chan, engine); + + nouveau_bo_wr32(priv->bo, chan->id * 16/4, 0x00000000); + return ret; +} + +static int +nvc0_fence_fini(struct drm_device *dev, int engine, bool suspend) +{ + return 0; +} + +static int +nvc0_fence_init(struct drm_device *dev, int engine) +{ + return 0; +} + +static void +nvc0_fence_destroy(struct drm_device *dev, int engine) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nvc0_fence_priv *priv = nv_engine(dev, engine); + + nouveau_bo_unmap(priv->bo); + nouveau_bo_ref(NULL, &priv->bo); + dev_priv->eng[engine] = NULL; + kfree(priv); +} + +int +nvc0_fence_create(struct drm_device *dev) +{ + struct nouveau_fifo_priv *pfifo = nv_engine(dev, NVOBJ_ENGINE_FIFO); + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nvc0_fence_priv *priv; + int ret; + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->base.engine.destroy = nvc0_fence_destroy; + priv->base.engine.init = nvc0_fence_init; + priv->base.engine.fini = nvc0_fence_fini; + priv->base.engine.context_new = nvc0_fence_context_new; + priv->base.engine.context_del = nvc0_fence_context_del; + priv->base.emit = nvc0_fence_emit; + priv->base.sync = nvc0_fence_sync; + priv->base.read = nvc0_fence_read; + dev_priv->eng[NVOBJ_ENGINE_FENCE] = &priv->base.engine; + + ret = nouveau_bo_new(dev, 16 * pfifo->channels, 0, TTM_PL_FLAG_VRAM, + 0, 0, NULL, &priv->bo); + if (ret == 0) { + ret = nouveau_bo_pin(priv->bo, TTM_PL_FLAG_VRAM); + if (ret == 0) + ret = nouveau_bo_map(priv->bo); + if (ret) + nouveau_bo_ref(NULL, &priv->bo); + } + + if (ret) + nvc0_fence_destroy(dev, NVOBJ_ENGINE_FENCE); + return ret; +} |
