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drm/radeon: map registers at load time

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Now that the radeon driver has suspend/resume functions, it needs to map its
registers at load time or it will likely crash if a suspend operation occurs
before the driver has been initialized.

This patch moves the register mapping code from firstopen to load and makes
the mapping into a _DRM_DRIVER one so that the core won't remove it at
lastclose time.

Fixes (at least partially) kernel bz #11891.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Dave Airlie
2008-11-11 17:56:16 +10:00
parent 5d8e6bb7a2
commit 78538bf149
2 changed files with 10 additions and 7 deletions
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15
drivers/gpu/drm/radeon/radeon_cp.c
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@@ -1751,6 +1751,12 @@ int radeon_driver_load(struct drm_device *dev, unsigned long flags)
else
dev_priv->flags |= RADEON_IS_PCI;
ret = drm_addmap(dev, drm_get_resource_start(dev, 2),
drm_get_resource_len(dev, 2), _DRM_REGISTERS,
_DRM_READ_ONLY | _DRM_DRIVER, &dev_priv->mmio);
if (ret != 0)
return ret;
DRM_DEBUG("%s card detected\n",
((dev_priv->flags & RADEON_IS_AGP) ? "AGP" : (((dev_priv->flags & RADEON_IS_PCIE) ? "PCIE" : "PCI"))));
return ret;
@@ -1767,12 +1773,6 @@ int radeon_driver_firstopen(struct drm_device *dev)
dev_priv->gart_info.table_size = RADEON_PCIGART_TABLE_SIZE;
ret = drm_addmap(dev, drm_get_resource_start(dev, 2),
drm_get_resource_len(dev, 2), _DRM_REGISTERS,
_DRM_READ_ONLY, &dev_priv->mmio);
if (ret != 0)
return ret;
dev_priv->fb_aper_offset = drm_get_resource_start(dev, 0);
ret = drm_addmap(dev, dev_priv->fb_aper_offset,
drm_get_resource_len(dev, 0), _DRM_FRAME_BUFFER,
@@ -1788,6 +1788,9 @@ int radeon_driver_unload(struct drm_device *dev)
drm_radeon_private_t *dev_priv = dev->dev_private;
DRM_DEBUG("\n");
drm_rmmap(dev, dev_priv->mmio);
drm_free(dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER);
dev->dev_private = NULL;