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i915: setup hardware status page if physical addrs are required

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Needed for the modesetting case where we initialize the ring at load time.
This commit is contained in:
Jesse Barnes 2008-08-13 11:39:22 -07:00
parent b8724ae647
commit 1c6abcefdc
1 changed files with 31 additions and 0 deletions
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31
shared-core/i915_init.c
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@ -100,6 +100,32 @@ int i915_probe_agp(struct pci_dev *pdev, unsigned long *aperture_size,
return 0;
}
static int
i915_init_hws_phys(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int ret = 0;
dev_priv->status_page_dmah = drm_pci_alloc(dev, PAGE_SIZE, PAGE_SIZE,
0xffffffff);
if (!dev_priv->status_page_dmah) {
DRM_ERROR("Can not allocate hardware status page\n");
ret = -ENOMEM;
goto out;
}
dev_priv->hw_status_page = dev_priv->status_page_dmah->vaddr;
dev_priv->dma_status_page = dev_priv->status_page_dmah->busaddr;
memset(dev_priv->hw_status_page, 0, PAGE_SIZE);
I915_WRITE(HWS_PGA, dev_priv->dma_status_page);
DRM_DEBUG("hws kernel virt: 0x%p\n", dev_priv->hw_status_page);
out:
return ret;
}
static int i915_load_modeset_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@ -113,6 +139,9 @@ static int i915_load_modeset_init(struct drm_device *dev)
/* Let GEM Manage from end of prealloc space to end of aperture */
i915_gem_do_init(dev, prealloc_size, agp_size);
if (!I915_NEED_GFX_HWS(dev))
i915_init_hws_phys(dev);
ret = i915_gem_init_ringbuffer(dev);
if (ret)
goto out;
@ -354,6 +383,8 @@ int i915_driver_unload(struct drm_device *dev)
mutex_unlock(&dev->struct_mutex);
drm_mm_takedown(&dev_priv->vram);
i915_gem_lastclose(dev);
if (!I915_NEED_GFX_HWS(dev))
drm_pci_free(dev, dev_priv->status_page_dmah);
}
drm_rmmap(dev, dev_priv->mmio_map);