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| author | Alan Hourihane <alanh@tungstengraphics.com> | 2008-03-12 10:18:33 +0000 |
|---|---|---|
| committer | Alan Hourihane <alanh@tungstengraphics.com> | 2008-03-12 10:18:33 +0000 |
| commit | b6dc381fabb199e70dc681e44e31452af8536313 (patch) | |
| tree | 9b25b1a427cba3d3e35d4272e53a482038142242 /shared-core/nouveau_mem.c | |
| parent | 7f04dd06e6003dd492ae5ddc876121a686f49157 (diff) | |
| parent | 2a618e5a7f6d26fe85e7d931d0ef08d9f18b1b7c (diff) | |
Merge branch 'master' of git+ssh://git.freedesktop.org/git/mesa/drm into modesetting-101
Conflicts:
shared-core/i915_dma.c
shared-core/i915_drv.h
shared-core/i915_irq.c
Diffstat (limited to 'shared-core/nouveau_mem.c')
| -rw-r--r-- | shared-core/nouveau_mem.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/shared-core/nouveau_mem.c b/shared-core/nouveau_mem.c index 80b2990d..4e80ca46 100644 --- a/shared-core/nouveau_mem.c +++ b/shared-core/nouveau_mem.c @@ -300,6 +300,32 @@ uint64_t nouveau_mem_fb_amount(struct drm_device *dev) return 0; } +static void nouveau_mem_reset_agp(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + uint32_t saved_pci_nv_1, saved_pci_nv_19, pmc_enable; + + saved_pci_nv_1 = NV_READ(NV04_PBUS_PCI_NV_1); + saved_pci_nv_19 = NV_READ(NV04_PBUS_PCI_NV_19); + + /* clear busmaster bit */ + NV_WRITE(NV04_PBUS_PCI_NV_1, saved_pci_nv_1 & ~0x4); + /* clear SBA and AGP bits */ + NV_WRITE(NV04_PBUS_PCI_NV_19, saved_pci_nv_19 & 0xfffff0ff); + + /* power cycle pgraph, if enabled */ + pmc_enable = NV_READ(NV03_PMC_ENABLE); + if (pmc_enable & NV_PMC_ENABLE_PGRAPH) { + NV_WRITE(NV03_PMC_ENABLE, pmc_enable & ~NV_PMC_ENABLE_PGRAPH); + NV_WRITE(NV03_PMC_ENABLE, NV_READ(NV03_PMC_ENABLE) | + NV_PMC_ENABLE_PGRAPH); + } + + /* and restore (gives effect of resetting AGP) */ + NV_WRITE(NV04_PBUS_PCI_NV_19, saved_pci_nv_19); + NV_WRITE(NV04_PBUS_PCI_NV_1, saved_pci_nv_1); +} + static int nouveau_mem_init_agp(struct drm_device *dev, int ttm) { @@ -308,6 +334,8 @@ nouveau_mem_init_agp(struct drm_device *dev, int ttm) struct drm_agp_mode mode; int ret; + nouveau_mem_reset_agp(dev); + ret = drm_agp_acquire(dev); if (ret) { DRM_ERROR("Unable to acquire AGP: %d\n", ret); |