diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/engine/fifo/nv50.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/engine/fifo/nv50.c | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/engine/fifo/nv50.c b/drivers/gpu/drm/nouveau/core/engine/fifo/nv50.c new file mode 100644 index 0000000..2309871 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/engine/fifo/nv50.c @@ -0,0 +1,294 @@ +/* + * Copyright (C) 2012 Ben Skeggs. + * All Rights Reserved. + * + * 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 (including the + * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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. + * + */ + +#include "drmP.h" +#include "drm.h" +#include "nouveau_drv.h" +#include <engine/fifo.h> +#include <core/ramht.h> +#include <subdev/vm.h> + +struct nv50_fifo_priv { + struct nouveau_fifo_priv base; + struct nouveau_gpuobj *playlist[2]; + int cur_playlist; +}; + +struct nv50_fifo_chan { + struct nouveau_fifo_chan base; +}; + +void +nv50_fifo_playlist_update(struct drm_device *dev) +{ + struct nv50_fifo_priv *priv = nv_engine(dev, NVOBJ_ENGINE_FIFO); + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_gpuobj *cur; + int i, p; + + cur = priv->playlist[priv->cur_playlist]; + priv->cur_playlist = !priv->cur_playlist; + + for (i = 0, p = 0; i < priv->base.channels; i++) { + if (nv_rd32(dev, 0x002600 + (i * 4)) & 0x80000000) + nv_wo32(cur, p++ * 4, i); + } + + dev_priv->engine.instmem.flush(dev); + + nv_wr32(dev, 0x0032f4, cur->vinst >> 12); + nv_wr32(dev, 0x0032ec, p); + nv_wr32(dev, 0x002500, 0x00000101); +} + +static int +nv50_fifo_context_new(struct nouveau_channel *chan, int engine) +{ + struct nv50_fifo_priv *priv = nv_engine(chan->dev, engine); + struct nv50_fifo_chan *fctx; + struct drm_device *dev = chan->dev; + struct drm_nouveau_private *dev_priv = dev->dev_private; + u64 ib_offset = chan->pushbuf_base + chan->dma.ib_base * 4; + u64 instance = chan->ramin->vinst >> 12; + unsigned long flags; + int ret = 0, i; + + fctx = chan->engctx[engine] = kzalloc(sizeof(*fctx), GFP_KERNEL); + if (!fctx) + return -ENOMEM; + atomic_inc(&chan->vm->engref[engine]); + + chan->user = ioremap(pci_resource_start(dev->pdev, 0) + + NV50_USER(chan->id), PAGE_SIZE); + if (!chan->user) { + ret = -ENOMEM; + goto error; + } + + for (i = 0; i < 0x100; i += 4) + nv_wo32(chan->ramin, i, 0x00000000); + nv_wo32(chan->ramin, 0x3c, 0x403f6078); + nv_wo32(chan->ramin, 0x40, 0x00000000); + nv_wo32(chan->ramin, 0x44, 0x01003fff); + nv_wo32(chan->ramin, 0x48, chan->pushbuf->cinst >> 4); + nv_wo32(chan->ramin, 0x50, lower_32_bits(ib_offset)); + nv_wo32(chan->ramin, 0x54, upper_32_bits(ib_offset) | + drm_order(chan->dma.ib_max + 1) << 16); + nv_wo32(chan->ramin, 0x60, 0x7fffffff); + nv_wo32(chan->ramin, 0x78, 0x00000000); + nv_wo32(chan->ramin, 0x7c, 0x30000001); + nv_wo32(chan->ramin, 0x80, ((chan->ramht->bits - 9) << 27) | + (4 << 24) /* SEARCH_FULL */ | + (chan->ramht->gpuobj->cinst >> 4)); + + dev_priv->engine.instmem.flush(dev); + + spin_lock_irqsave(&dev_priv->context_switch_lock, flags); + nv_wr32(dev, 0x002600 + (chan->id * 4), 0x80000000 | instance); + nv50_fifo_playlist_update(dev); + spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags); + +error: + if (ret) + priv->base.base.context_del(chan, engine); + return ret; +} + +static bool +nv50_fifo_kickoff(struct nouveau_channel *chan) +{ + struct drm_device *dev = chan->dev; + bool done = true; + u32 me; + + /* HW bug workaround: + * + * PFIFO will hang forever if the connected engines don't report + * that they've processed the context switch request. + * + * In order for the kickoff to work, we need to ensure all the + * connected engines are in a state where they can answer. + * + * Newer chipsets don't seem to suffer from this issue, and well, + * there's also a "ignore these engines" bitmask reg we can use + * if we hit the issue there.. + */ + + /* PME: make sure engine is enabled */ + me = nv_mask(dev, 0x00b860, 0x00000001, 0x00000001); + + /* do the kickoff... */ + nv_wr32(dev, 0x0032fc, chan->ramin->vinst >> 12); + if (!nv_wait_ne(dev, 0x0032fc, 0xffffffff, 0xffffffff)) { + NV_INFO(dev, "PFIFO: channel %d unload timeout\n", chan->id); + done = false; + } + + /* restore any engine states we changed, and exit */ + nv_wr32(dev, 0x00b860, me); + return done; +} + +static void +nv50_fifo_context_del(struct nouveau_channel *chan, int engine) +{ + struct nv50_fifo_chan *fctx = chan->engctx[engine]; + struct drm_device *dev = chan->dev; + struct drm_nouveau_private *dev_priv = dev->dev_private; + unsigned long flags; + + /* remove channel from playlist, will context switch if active */ + spin_lock_irqsave(&dev_priv->context_switch_lock, flags); + nv_mask(dev, 0x002600 + (chan->id * 4), 0x80000000, 0x00000000); + nv50_fifo_playlist_update(dev); + + /* tell any engines on this channel to unload their contexts */ + nv50_fifo_kickoff(chan); + + nv_wr32(dev, 0x002600 + (chan->id * 4), 0x00000000); + spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags); + + /* clean up */ + if (chan->user) { + iounmap(chan->user); + chan->user = NULL; + } + + atomic_dec(&chan->vm->engref[engine]); + chan->engctx[engine] = NULL; + kfree(fctx); +} + +static int +nv50_fifo_init(struct drm_device *dev, int engine) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + u32 instance; + int i; + + nv_mask(dev, 0x000200, 0x00000100, 0x00000000); + nv_mask(dev, 0x000200, 0x00000100, 0x00000100); + nv_wr32(dev, 0x00250c, 0x6f3cfc34); + nv_wr32(dev, 0x002044, 0x01003fff); + + nv_wr32(dev, 0x002100, 0xffffffff); + nv_wr32(dev, 0x002140, 0xffffffff); + + for (i = 0; i < 128; i++) { + struct nouveau_channel *chan = dev_priv->channels.ptr[i]; + if (chan && chan->engctx[engine]) + instance = 0x80000000 | chan->ramin->vinst >> 12; + else + instance = 0x00000000; + nv_wr32(dev, 0x002600 + (i * 4), instance); + } + + nv50_fifo_playlist_update(dev); + + nv_wr32(dev, 0x003200, 1); + nv_wr32(dev, 0x003250, 1); + nv_wr32(dev, 0x002500, 1); + return 0; +} + +static int +nv50_fifo_fini(struct drm_device *dev, int engine, bool suspend) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nv50_fifo_priv *priv = nv_engine(dev, engine); + int i; + + /* set playlist length to zero, fifo will unload context */ + nv_wr32(dev, 0x0032ec, 0); + + /* tell all connected engines to unload their contexts */ + for (i = 0; i < priv->base.channels; i++) { + struct nouveau_channel *chan = dev_priv->channels.ptr[i]; + if (chan && !nv50_fifo_kickoff(chan)) + return -EBUSY; + } + + nv_wr32(dev, 0x002140, 0); + return 0; +} + +void +nv50_fifo_tlb_flush(struct drm_device *dev, int engine) +{ + nv50_vm_flush_engine(dev, 5); +} + +void +nv50_fifo_destroy(struct drm_device *dev, int engine) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nv50_fifo_priv *priv = nv_engine(dev, engine); + + nouveau_irq_unregister(dev, 8); + + nouveau_gpuobj_ref(NULL, &priv->playlist[0]); + nouveau_gpuobj_ref(NULL, &priv->playlist[1]); + + dev_priv->eng[engine] = NULL; + kfree(priv); +} + +int +nv50_fifo_create(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nv50_fifo_priv *priv; + int ret; + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->base.base.destroy = nv50_fifo_destroy; + priv->base.base.init = nv50_fifo_init; + priv->base.base.fini = nv50_fifo_fini; + priv->base.base.context_new = nv50_fifo_context_new; + priv->base.base.context_del = nv50_fifo_context_del; + priv->base.base.tlb_flush = nv50_fifo_tlb_flush; + priv->base.channels = 127; + dev_priv->eng[NVOBJ_ENGINE_FIFO] = &priv->base.base; + + ret = nouveau_gpuobj_new(dev, NULL, priv->base.channels * 4, 0x1000, + NVOBJ_FLAG_ZERO_ALLOC, &priv->playlist[0]); + if (ret) + goto error; + + ret = nouveau_gpuobj_new(dev, NULL, priv->base.channels * 4, 0x1000, + NVOBJ_FLAG_ZERO_ALLOC, &priv->playlist[1]); + if (ret) + goto error; + + nouveau_irq_register(dev, 8, nv04_fifo_isr); +error: + if (ret) + priv->base.base.destroy(dev, NVOBJ_ENGINE_FIFO); + return ret; +} |
