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PCI: add Intel 82599 Virtual Function specific reset method 

Handle device specific timeout and use FLR.

Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Dexuan Cui <dexuan.cui@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
hifive-unleashed-5.1
Dexuan Cui 2009-12-07 13:03:23 +08:00 committed by Jesse Barnes
parent aeb30016fe
commit c763e7b58f
1 changed files with 22 additions and 0 deletions
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22
drivers/pci/quirks.c
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@ -2664,7 +2664,29 @@ static int reset_intel_generic_dev(struct pci_dev *dev, int probe)
}
}
static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, int probe)
{
int pos;
pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
if (!pos)
return -ENOTTY;
if (probe)
return 0;
pci_write_config_word(dev, pos + PCI_EXP_DEVCTL,
PCI_EXP_DEVCTL_BCR_FLR);
msleep(100);
return 0;
}
#define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed
struct pci_dev_reset_methods pci_dev_reset_methods[] = {
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF,
reset_intel_82599_sfp_virtfn },
{ PCI_VENDOR_ID_INTEL, PCI_ANY_ID,
reset_intel_generic_dev },
{ 0 }