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IB/mthca: Relax UAR size check 

There are some cards around that have UAR (user access region) size
different from 8 MB.  Relax our sanity check to make sure that the PCI
BAR is big enough to access the UAR size reported by the device
firmware instead.

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Michael S. Tsirkin 2006-01-30 15:20:35 -08:00 committed by Roland Dreier
parent f9e61929e5
commit cbd2981a97
1 changed files with 8 additions and 2 deletions
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10
drivers/infiniband/hw/mthca/mthca_main.c
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@ -155,6 +155,13 @@ static int __devinit mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim
return -ENODEV;
}
if (dev_lim->uar_size > pci_resource_len(mdev->pdev, 2)) {
mthca_err(mdev, "HCA reported UAR size of 0x%x bigger than "
"PCI resource 2 size of 0x%lx, aborting.\n",
dev_lim->uar_size, pci_resource_len(mdev->pdev, 2));
return -ENODEV;
}
mdev->limits.num_ports = dev_lim->num_ports;
mdev->limits.vl_cap = dev_lim->max_vl;
mdev->limits.mtu_cap = dev_lim->max_mtu;
@ -976,8 +983,7 @@ static int __devinit mthca_init_one(struct pci_dev *pdev,
err = -ENODEV;
goto err_disable_pdev;
}
if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM) ||
pci_resource_len(pdev, 2) != 1 << 23) {
if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
dev_err(&pdev->dev, "Missing UAR, aborting.\n");
err = -ENODEV;
goto err_disable_pdev;