/* * 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 "nouveau_fence.h" #include "nouveau_vmm.h" #include "nv50_display.h" #include #include static int nv84_fence_emit32(struct nouveau_channel *chan, u64 virtual, u32 sequence) { struct nvif_push *push = &chan->chan.push; int ret = PUSH_WAIT(push, 8); if (ret == 0) { PUSH_MTHD(push, NV826F, SET_CONTEXT_DMA_SEMAPHORE, chan->vram.handle); PUSH_MTHD(push, NV826F, SEMAPHOREA, NVVAL(NV826F, SEMAPHOREA, OFFSET_UPPER, upper_32_bits(virtual)), SEMAPHOREB, lower_32_bits(virtual), SEMAPHOREC, sequence, SEMAPHORED, NVDEF(NV826F, SEMAPHORED, OPERATION, RELEASE), NON_STALLED_INTERRUPT, 0); PUSH_KICK(push); } return ret; } static int nv84_fence_sync32(struct nouveau_channel *chan, u64 virtual, u32 sequence) { struct nvif_push *push = &chan->chan.push; int ret = PUSH_WAIT(push, 7); if (ret == 0) { PUSH_MTHD(push, NV826F, SET_CONTEXT_DMA_SEMAPHORE, chan->vram.handle); PUSH_MTHD(push, NV826F, SEMAPHOREA, NVVAL(NV826F, SEMAPHOREA, OFFSET_UPPER, upper_32_bits(virtual)), SEMAPHOREB, lower_32_bits(virtual), SEMAPHOREC, sequence, SEMAPHORED, NVDEF(NV826F, SEMAPHORED, OPERATION, ACQ_GEQ)); PUSH_KICK(push); } return ret; } static inline u32 nv84_fence_chid(struct nouveau_channel *chan) { return chan->cli->drm->runl[chan->runlist].chan_id_base + chan->chid; } static int nv84_fence_emit(struct nouveau_fence *fence) { struct nouveau_channel *chan = fence->channel; struct nv84_fence_chan *fctx = chan->fence; u64 addr = fctx->vma->addr + nv84_fence_chid(chan) * 16; return fctx->base.emit32(chan, addr, fence->base.seqno); } static int nv84_fence_sync(struct nouveau_fence *fence, struct nouveau_channel *prev, struct nouveau_channel *chan) { struct nv84_fence_chan *fctx = chan->fence; u64 addr = fctx->vma->addr + nv84_fence_chid(prev) * 16; return fctx->base.sync32(chan, addr, fence->base.seqno); } static u32 nv84_fence_read(struct nouveau_channel *chan) { struct nv84_fence_priv *priv = chan->cli->drm->fence; return nouveau_bo_rd32(priv->bo, nv84_fence_chid(chan) * 16/4); } static void nv84_fence_context_del(struct nouveau_channel *chan) { struct nv84_fence_priv *priv = chan->cli->drm->fence; struct nv84_fence_chan *fctx = chan->fence; nouveau_bo_wr32(priv->bo, nv84_fence_chid(chan) * 16 / 4, fctx->base.sequence); mutex_lock(&priv->mutex); nouveau_vma_del(&fctx->vma); mutex_unlock(&priv->mutex); nouveau_fence_context_del(&fctx->base); chan->fence = NULL; nouveau_fence_context_free(&fctx->base); } int nv84_fence_context_new(struct nouveau_channel *chan) { struct nv84_fence_priv *priv = chan->cli->drm->fence; struct nv84_fence_chan *fctx; int ret; fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL); if (!fctx) return -ENOMEM; nouveau_fence_context_new(chan, &fctx->base); fctx->base.emit = nv84_fence_emit; fctx->base.sync = nv84_fence_sync; fctx->base.read = nv84_fence_read; fctx->base.emit32 = nv84_fence_emit32; fctx->base.sync32 = nv84_fence_sync32; fctx->base.sequence = nv84_fence_read(chan); mutex_lock(&priv->mutex); ret = nouveau_vma_new(priv->bo, chan->vmm, &fctx->vma); mutex_unlock(&priv->mutex); if (ret) nv84_fence_context_del(chan); return ret; } static bool nv84_fence_suspend(struct nouveau_drm *drm) { struct nv84_fence_priv *priv = drm->fence; int i; priv->suspend = vmalloc(array_size(sizeof(u32), drm->chan_total)); if (priv->suspend) { for (i = 0; i < drm->chan_total; i++) priv->suspend[i] = nouveau_bo_rd32(priv->bo, i*4); } return priv->suspend != NULL; } static void nv84_fence_resume(struct nouveau_drm *drm) { struct nv84_fence_priv *priv = drm->fence; int i; if (priv->suspend) { for (i = 0; i < drm->chan_total; i++) nouveau_bo_wr32(priv->bo, i*4, priv->suspend[i]); vfree(priv->suspend); priv->suspend = NULL; } } static void nv84_fence_destroy(struct nouveau_drm *drm) { struct nv84_fence_priv *priv = drm->fence; nouveau_bo_unmap(priv->bo); if (priv->bo) nouveau_bo_unpin(priv->bo); nouveau_bo_fini(priv->bo); drm->fence = NULL; kfree(priv); } int nv84_fence_create(struct nouveau_drm *drm) { struct nv84_fence_priv *priv; u32 domain; int ret; priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->base.dtor = nv84_fence_destroy; priv->base.suspend = nv84_fence_suspend; priv->base.resume = nv84_fence_resume; priv->base.context_new = nv84_fence_context_new; priv->base.context_del = nv84_fence_context_del; priv->base.uevent = true; mutex_init(&priv->mutex); /* Use VRAM if there is any ; otherwise fallback to system memory */ domain = drm->client.device.info.ram_size != 0 ? NOUVEAU_GEM_DOMAIN_VRAM : /* * fences created in sysmem must be non-cached or we * will lose CPU/GPU coherency! */ NOUVEAU_GEM_DOMAIN_GART | NOUVEAU_GEM_DOMAIN_COHERENT; ret = nouveau_bo_new(&drm->client, 16 * drm->chan_total, 0, domain, 0, 0, NULL, NULL, &priv->bo); if (ret == 0) { ret = nouveau_bo_pin(priv->bo, domain, false); if (ret == 0) { ret = nouveau_bo_map(priv->bo); if (ret) nouveau_bo_unpin(priv->bo); } if (ret) nouveau_bo_fini(priv->bo); } if (ret) nv84_fence_destroy(drm); return ret; }