/* * 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_drv.h" #include "nouveau_dma.h" #include "nv10_fence.h" #include #include #include #include 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 ttm_resource *reg = priv->bo->bo.resource; struct nv10_fence_chan *fctx; u32 start = reg->start * PAGE_SIZE; u32 limit = start + priv->bo->bo.base.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_fini(priv->bo); } if (ret) { nv10_fence_destroy(drm); return ret; } nouveau_bo_wr32(priv->bo, 0x000, 0x00000000); return ret; }