renesas/drm.git - libdrm, cloned from git://anongit.freedesktop.org/mesa/drm

Age	Commit message (Expand)	Author
2005-04-26	Convert NOMAN to the new preferred spelling NO_MAN to quiet warnings.	Eric Anholt
2003-08-29	These files were missed in the SiS DRM commit.	Eric Anholt
2002-07-05	merged bsd-3-0-0-branch	Alan Hourihane
2002-01-27	Import of XFree86 4.2.0	David Dawes

/* * Copyright (C) 2007 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 "nouveau_dma.h" static int nouveau_fence_has_irq(struct drm_device *dev, uint32_t class, uint32_t flags) { struct drm_nouveau_private *dev_priv = dev->dev_private; DRM_DEBUG("class=%d, flags=0x%08x\n", class, flags); /* DRM's channel always uses IRQs to signal fences */ if (class == dev_priv->channel.chan->id) return 1; /* Other channels don't use IRQs at all yet */ return 0; } static int nouveau_fence_emit(struct drm_device *dev, uint32_t class, uint32_t flags, uint32_t *breadcrumb, uint32_t *native_type) { struct drm_nouveau_private *dev_priv = dev->dev_private; struct nouveau_channel *chan = dev_priv->fifos[class]; struct nouveau_drm_channel *dchan = &dev_priv->channel; DRM_DEBUG("class=%d, flags=0x%08x\n", class, flags); /* We can't emit fences on client channels, update sequence number * and userspace will emit the fence */ *breadcrumb = ++chan->next_sequence; *native_type = DRM_FENCE_TYPE_EXE; if (chan != dchan->chan) { DRM_DEBUG("user fence 0x%08x\n", *breadcrumb); return 0; } DRM_DEBUG("emit 0x%08x\n", *breadcrumb); BEGIN_RING(NvSubM2MF, NV_MEMORY_TO_MEMORY_FORMAT_SET_REF, 1); OUT_RING (*breadcrumb); BEGIN_RING(NvSubM2MF, 0x0150, 1); OUT_RING (0); FIRE_RING (); return 0; } static void nouveau_fence_poll(struct drm_device *dev, uint32_t class, uint32_t waiting_types) { struct drm_nouveau_private *dev_priv = dev->dev_private; struct drm_fence_class_manager *fc = &dev->fm.fence_class[class]; struct nouveau_channel *chan = dev_priv->fifos[class]; DRM_DEBUG("class=%d\n", class); DRM_DEBUG("pending: 0x%08x 0x%08x\n", waiting_types, fc->waiting_types); if (waiting_types & DRM_FENCE_TYPE_EXE) { uint32_t sequence = NV_READ(chan->ref_cnt); DRM_DEBUG("got 0x%08x\n", sequence); drm_fence_handler(dev, class, sequence, waiting_types, 0); } } void nouveau_fence_handler(struct drm_device *dev, int channel) { struct drm_fence_manager *fm = &dev->fm; struct drm_fence_class_manager *fc = &fm->fence_class[channel]; DRM_DEBUG("class=%d\n", channel); write_lock(&fm->lock); nouveau_fence_poll(dev, channel, fc->waiting_types); write_unlock(&fm->lock); } struct drm_fence_driver nouveau_fence_driver = { .num_classes = 8, .wrap_diff = (1 << 30), .flush_diff = (1 << 29), .sequence_mask = 0xffffffffU, .has_irq = nouveau_fence_has_irq, .emit = nouveau_fence_emit, .flush = NULL, .poll = nouveau_fence_poll, .needed_flush = NULL, .wait = NULL };