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drm/nouveau: completely fail init if we fail to map the PRAMIN BAR 

On cards where there's a specific BAR for PRAMIN, we used to try and fall
back to the "legacy" aperture within the mmio BAR.

This is doomed to cause problems, so lets just fail completely as there's
obviously something else very wrong anyway.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Ben Skeggs 2010-06-02 10:16:24 +10:00 committed by Dave Airlie
parent 1eb38100ab
commit 6d69630553
1 changed files with 7 additions and 12 deletions
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19
drivers/gpu/drm/nouveau/nouveau_state.c
View File

@ -779,29 +779,24 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
return ret;
}
/* map larger RAMIN aperture on NV40 cards */
dev_priv->ramin = NULL;
/* Map PRAMIN BAR, or on older cards, the aperture withing BAR0 */
if (dev_priv->card_type >= NV_40) {
int ramin_bar = 2;
if (pci_resource_len(dev->pdev, ramin_bar) == 0)
ramin_bar = 3;
dev_priv->ramin_size = pci_resource_len(dev->pdev, ramin_bar);
dev_priv->ramin = ioremap(
pci_resource_start(dev->pdev, ramin_bar),
dev_priv->ramin =
ioremap(pci_resource_start(dev->pdev, ramin_bar),
dev_priv->ramin_size);
if (!dev_priv->ramin) {
NV_ERROR(dev, "Failed to init RAMIN mapping, "
"limited instance memory available\n");
NV_ERROR(dev, "Failed to PRAMIN BAR");
return -ENOMEM;
}
}
/* On older cards (or if the above failed), create a map covering
* the BAR0 PRAMIN aperture */
if (!dev_priv->ramin) {
} else {
dev_priv->ramin_size = 1 * 1024 * 1024;
dev_priv->ramin = ioremap(mmio_start_offs + NV_RAMIN,
dev_priv->ramin_size);
dev_priv->ramin_size);
if (!dev_priv->ramin) {
NV_ERROR(dev, "Failed to map BAR0 PRAMIN.\n");
return -ENOMEM;