diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv17_fence.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv17_fence.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv17_fence.c b/drivers/gpu/drm/nouveau/nv17_fence.c new file mode 100644 index 000000000..1253fdec7 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv17_fence.c @@ -0,0 +1,154 @@ +/* + * 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 <bskeggs@redhat.com> + */ +#include "nouveau_drv.h" +#include "nouveau_dma.h" +#include "nv10_fence.h" + +#include <nvif/push006c.h> + +#include <nvif/class.h> +#include <nvif/cl0002.h> + +#include <nvhw/class/cl176e.h> + +int +nv17_fence_sync(struct nouveau_fence *fence, + struct nouveau_channel *prev, struct nouveau_channel *chan) +{ + struct nouveau_cli *cli = (void *)prev->user.client; + struct nv10_fence_priv *priv = chan->drm->fence; + struct nv10_fence_chan *fctx = chan->fence; + struct nvif_push *ppush = prev->chan.push; + struct nvif_push *npush = chan->chan.push; + u32 value; + int ret; + + if (!mutex_trylock(&cli->mutex)) + return -EBUSY; + + spin_lock(&priv->lock); + value = priv->sequence; + priv->sequence += 2; + spin_unlock(&priv->lock); + + ret = PUSH_WAIT(ppush, 5); + if (!ret) { + PUSH_MTHD(ppush, NV176E, SET_CONTEXT_DMA_SEMAPHORE, fctx->sema.handle, + SEMAPHORE_OFFSET, 0, + SEMAPHORE_ACQUIRE, value + 0, + SEMAPHORE_RELEASE, value + 1); + PUSH_KICK(ppush); + } + + if (!ret && !(ret = PUSH_WAIT(npush, 5))) { + PUSH_MTHD(npush, NV176E, SET_CONTEXT_DMA_SEMAPHORE, fctx->sema.handle, + SEMAPHORE_OFFSET, 0, + SEMAPHORE_ACQUIRE, value + 1, + SEMAPHORE_RELEASE, value + 2); + PUSH_KICK(npush); + } + + mutex_unlock(&cli->mutex); + return 0; +} + +static int +nv17_fence_context_new(struct nouveau_channel *chan) +{ + struct nv10_fence_priv *priv = chan->drm->fence; + struct nv10_fence_chan *fctx; + struct ttm_resource *reg = &priv->bo->bo.mem; + u32 start = reg->start * PAGE_SIZE; + u32 limit = start + reg->size - 1; + int ret = 0; + + 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 = nv17_fence_sync; + + ret = nvif_object_ctor(&chan->user, "fenceCtxDma", NvSema, + NV_DMA_FROM_MEMORY, + &(struct nv_dma_v0) { + .target = NV_DMA_V0_TARGET_VRAM, + .access = NV_DMA_V0_ACCESS_RDWR, + .start = start, + .limit = limit, + }, sizeof(struct nv_dma_v0), + &fctx->sema); + if (ret) + nv10_fence_context_del(chan); + return ret; +} + +void +nv17_fence_resume(struct nouveau_drm *drm) +{ + struct nv10_fence_priv *priv = drm->fence; + + nouveau_bo_wr32(priv->bo, 0, priv->sequence); +} + +int +nv17_fence_create(struct nouveau_drm *drm) +{ + struct nv10_fence_priv *priv; + int ret = 0; + + priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->base.dtor = nv10_fence_destroy; + priv->base.resume = nv17_fence_resume; + priv->base.context_new = nv17_fence_context_new; + priv->base.context_del = nv10_fence_context_del; + spin_lock_init(&priv->lock); + + ret = nouveau_bo_new(&drm->client, 4096, 0x1000, + NOUVEAU_GEM_DOMAIN_VRAM, + 0, 0x0000, NULL, NULL, &priv->bo); + if (!ret) { + ret = nouveau_bo_pin(priv->bo, NOUVEAU_GEM_DOMAIN_VRAM, false); + if (!ret) { + ret = nouveau_bo_map(priv->bo); + if (ret) + nouveau_bo_unpin(priv->bo); + } + if (ret) + nouveau_bo_ref(NULL, &priv->bo); + } + + if (ret) { + nv10_fence_destroy(drm); + return ret; + } + + nouveau_bo_wr32(priv->bo, 0x000, 0x00000000); + return ret; +} |