diff options
author | root <root@gdp.(none)> | 2008-05-06 23:04:55 +0100 |
---|---|---|
committer | Stuart Bennett <sb476@cam.ac.uk> | 2008-08-19 02:01:14 +0100 |
commit | 0da66c27fa2aabdbaf4c003ba3712a61253d7ffe (patch) | |
tree | d2984ea68dbf90e535b56740ae48c90a3b149d31 /shared-core/nouveau_state.c | |
parent | 41b83a99583486ad4f8760a6537d34783769bfc3 (diff) |
nouveau: fifo and graphics engine suspend and resume for nv04-nv4x
Corresponding DDX patch at http://people.freedesktop.org/~stuart/nv0x-nv4x_suspend/
Diffstat (limited to 'shared-core/nouveau_state.c')
-rw-r--r-- | shared-core/nouveau_state.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/shared-core/nouveau_state.c b/shared-core/nouveau_state.c index d9c6efe7..85220e6e 100644 --- a/shared-core/nouveau_state.c +++ b/shared-core/nouveau_state.c @@ -1,5 +1,6 @@ /* * Copyright 2005 Stephane Marchesin + * Copyright 2008 Stuart Bennett * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a @@ -698,3 +699,172 @@ void nouveau_wait_for_idle(struct drm_device *dev) } } } + +static int nouveau_suspend(struct drm_device *dev) +{ + struct mem_block *p; + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_suspend_resume *susres = &dev_priv->susres; + struct nouveau_engine *engine = &dev_priv->Engine; + int i; + + drm_free(susres->ramin_copy, susres->ramin_size, DRM_MEM_DRIVER); + susres->ramin_size = 0; + list_for_each(p, dev_priv->ramin_heap) + if (p->file_priv && (p->start + p->size) > susres->ramin_size) + susres->ramin_size = p->start + p->size; + if (!(susres->ramin_copy = drm_alloc(susres->ramin_size, DRM_MEM_DRIVER))) { + DRM_ERROR("Couldn't alloc RAMIN backing for suspend\n"); + return -ENOMEM; + } + + for (i = 0; i < engine->fifo.channels; i++) { + uint64_t t_start = engine->timer.read(dev); + + if (dev_priv->fifos[i] == NULL) + continue; + + /* Give the channel a chance to idle, wait 2s (hopefully) */ + while (!nouveau_channel_idle(dev_priv->fifos[i])) + if (engine->timer.read(dev) - t_start > 2000000000ULL) { + DRM_ERROR("Failed to idle channel %d before" + "suspend.", dev_priv->fifos[i]->id); + return -EBUSY; + } + } + nouveau_wait_for_idle(dev); + + NV_WRITE(NV04_PGRAPH_FIFO, 0); + /* disable the fifo caches */ + NV_WRITE(NV03_PFIFO_CACHES, 0x00000000); + NV_WRITE(NV04_PFIFO_CACHE1_DMA_PUSH, + NV_READ(NV04_PFIFO_CACHE1_DMA_PUSH) & ~1); + NV_WRITE(NV03_PFIFO_CACHE1_PUSH0, 0x00000000); + NV_WRITE(NV04_PFIFO_CACHE1_PULL0, 0x00000000); + + susres->fifo_mode = NV_READ(NV04_PFIFO_MODE); + + if (dev_priv->card_type >= NV_10) { + susres->graph_state = NV_READ(NV10_PGRAPH_STATE); + susres->graph_ctx_control = NV_READ(NV10_PGRAPH_CTX_CONTROL); + } else { + susres->graph_state = NV_READ(NV04_PGRAPH_STATE); + susres->graph_ctx_control = NV_READ(NV04_PGRAPH_CTX_CONTROL); + } + + engine->fifo.save_context(dev_priv->fifos[engine->fifo.channel_id(dev)]); + engine->graph.save_context(dev_priv->fifos[engine->fifo.channel_id(dev)]); + nouveau_wait_for_idle(dev); + + for (i = 0; i < susres->ramin_size / 4; i++) + susres->ramin_copy[i] = NV_RI32(i << 2); + + /* reenable the fifo caches */ + NV_WRITE(NV04_PFIFO_CACHE1_DMA_PUSH, + NV_READ(NV04_PFIFO_CACHE1_DMA_PUSH) | 1); + NV_WRITE(NV03_PFIFO_CACHE1_PUSH0, 0x00000001); + NV_WRITE(NV04_PFIFO_CACHE1_PULL0, 0x00000001); + NV_WRITE(NV03_PFIFO_CACHES, 0x00000001); + NV_WRITE(NV04_PGRAPH_FIFO, 1); + + return 0; +} + +static int nouveau_resume(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_suspend_resume *susres = &dev_priv->susres; + struct nouveau_engine *engine = &dev_priv->Engine; + int i; + + if (!susres->ramin_copy) + return -EINVAL; + + DRM_DEBUG("Doing resume\n"); + + if (dev_priv->gart_info.type == NOUVEAU_GART_AGP) { + struct drm_agp_info info; + struct drm_agp_mode mode; + + /* agp bridge drivers don't re-enable agp on resume. lame. */ + if ((i = drm_agp_info(dev, &info))) { + DRM_ERROR("Unable to get AGP info: %d\n", i); + return i; + } + mode.mode = info.mode; + if ((i = drm_agp_enable(dev, mode))) { + DRM_ERROR("Unable to enable AGP: %d\n", i); + return i; + } + } + + for (i = 0; i < susres->ramin_size / 4; i++) + NV_WI32(i << 2, susres->ramin_copy[i]); + + engine->mc.init(dev); + engine->timer.init(dev); + engine->fb.init(dev); + engine->graph.init(dev); + engine->fifo.init(dev); + + NV_WRITE(NV04_PGRAPH_FIFO, 0); + /* disable the fifo caches */ + NV_WRITE(NV03_PFIFO_CACHES, 0x00000000); + NV_WRITE(NV04_PFIFO_CACHE1_DMA_PUSH, + NV_READ(NV04_PFIFO_CACHE1_DMA_PUSH) & ~1); + NV_WRITE(NV03_PFIFO_CACHE1_PUSH0, 0x00000000); + NV_WRITE(NV04_PFIFO_CACHE1_PULL0, 0x00000000); + + /* PMC power cycling PFIFO in init clobbers some of the stuff stored in + * PRAMIN (such as NV04_PFIFO_CACHE1_DMA_INSTANCE). this is unhelpful + */ + for (i = 0; i < susres->ramin_size / 4; i++) + NV_WI32(i << 2, susres->ramin_copy[i]); + + engine->fifo.load_context(dev_priv->fifos[0]); + NV_WRITE(NV04_PFIFO_MODE, susres->fifo_mode); + + engine->graph.load_context(dev_priv->fifos[0]); + nouveau_wait_for_idle(dev); + + if (dev_priv->card_type >= NV_10) { + NV_WRITE(NV10_PGRAPH_STATE, susres->graph_state); + NV_WRITE(NV10_PGRAPH_CTX_CONTROL, susres->graph_ctx_control); + } else { + NV_WRITE(NV04_PGRAPH_STATE, susres->graph_state); + NV_WRITE(NV04_PGRAPH_CTX_CONTROL, susres->graph_ctx_control); + } + + /* reenable the fifo caches */ + NV_WRITE(NV04_PFIFO_CACHE1_DMA_PUSH, + NV_READ(NV04_PFIFO_CACHE1_DMA_PUSH) | 1); + NV_WRITE(NV03_PFIFO_CACHE1_PUSH0, 0x00000001); + NV_WRITE(NV04_PFIFO_CACHE1_PULL0, 0x00000001); + NV_WRITE(NV03_PFIFO_CACHES, 0x00000001); + NV_WRITE(NV04_PGRAPH_FIFO, 0x1); + + if (dev->irq_enabled) + nouveau_irq_postinstall(dev); + + drm_free(susres->ramin_copy, susres->ramin_size, DRM_MEM_DRIVER); + susres->ramin_copy = NULL; + susres->ramin_size = 0; + + return 0; +} + +int nouveau_ioctl_suspend(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + NOUVEAU_CHECK_INITIALISED_WITH_RETURN; + + return nouveau_suspend(dev); +} + +int nouveau_ioctl_resume(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + NOUVEAU_CHECK_INITIALISED_WITH_RETURN; + + return nouveau_resume(dev); +} |