135 lines
3.9 KiB
C
135 lines
3.9 KiB
C
/*
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* Copyright (C) 2007 Ben Skeggs.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "drmP.h"
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#include "drm.h"
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#include "nouveau_drv.h"
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#include "nouveau_dma.h"
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static int
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nouveau_fence_has_irq(struct drm_device *dev, uint32_t class, uint32_t flags)
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{
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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DRM_DEBUG("class=%d, flags=0x%08x\n", class, flags);
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/* DRM's channel always uses IRQs to signal fences */
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if (class == dev_priv->channel.chan->id)
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return 1;
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/* Other channels don't use IRQs at all yet */
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return 0;
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}
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static int
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nouveau_fence_emit(struct drm_device *dev, uint32_t class, uint32_t flags,
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uint32_t *breadcrumb, uint32_t *native_type)
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{
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_channel *chan = dev_priv->fifos[class];
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struct nouveau_drm_channel *dchan = &dev_priv->channel;
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DRM_DEBUG("class=%d, flags=0x%08x\n", class, flags);
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/* We can't emit fences on client channels, update sequence number
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* and userspace will emit the fence
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*/
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*breadcrumb = ++chan->next_sequence;
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*native_type = DRM_FENCE_TYPE_EXE;
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if (chan != dchan->chan) {
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DRM_DEBUG("user fence 0x%08x\n", *breadcrumb);
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return 0;
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}
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DRM_DEBUG("emit 0x%08x\n", *breadcrumb);
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BEGIN_RING(NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_SET_REF, 1);
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OUT_RING (*breadcrumb);
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BEGIN_RING(NvSubM2MF, 0x0150, 1);
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OUT_RING (0);
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FIRE_RING ();
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return 0;
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}
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static void
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nouveau_fence_perform_flush(struct drm_device *dev, uint32_t class)
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{
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct drm_fence_class_manager *fc = &dev->fm.fence_class[class];
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struct nouveau_channel *chan = dev_priv->fifos[class];
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uint32_t pending_types = 0;
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DRM_DEBUG("class=%d\n", class);
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pending_types = fc->pending_flush |
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((fc->pending_exe_flush) ? DRM_FENCE_TYPE_EXE : 0);
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DRM_DEBUG("pending: 0x%08x 0x%08x\n", pending_types,
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fc->pending_flush);
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if (pending_types) {
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uint32_t sequence = NV_READ(chan->ref_cnt);
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DRM_DEBUG("got 0x%08x\n", sequence);
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drm_fence_handler(dev, class, sequence, pending_types, 0);
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}
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}
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static void
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nouveau_fence_poke_flush(struct drm_device *dev, uint32_t class)
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{
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struct drm_fence_manager *fm = &dev->fm;
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unsigned long flags;
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DRM_DEBUG("class=%d\n", class);
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write_lock_irqsave(&fm->lock, flags);
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nouveau_fence_perform_flush(dev, class);
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write_unlock_irqrestore(&fm->lock, flags);
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}
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void
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nouveau_fence_handler(struct drm_device *dev, int channel)
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{
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struct drm_fence_manager *fm = &dev->fm;
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DRM_DEBUG("class=%d\n", channel);
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write_lock(&fm->lock);
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nouveau_fence_perform_flush(dev, channel);
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write_unlock(&fm->lock);
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}
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struct drm_fence_driver nouveau_fence_driver = {
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.num_classes = 8,
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.wrap_diff = (1 << 30),
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.flush_diff = (1 << 29),
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.sequence_mask = 0xffffffffU,
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.lazy_capable = 1,
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.has_irq = nouveau_fence_has_irq,
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.emit = nouveau_fence_emit,
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.poke_flush = nouveau_fence_poke_flush
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};
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