From c763e7b58f71833e6cb7b05493eb1adda4811b08 Mon Sep 17 00:00:00 2001
From: Dexuan Cui <dexuan.cui@intel.com>
Date: Mon, 7 Dec 2009 13:03:23 +0800
Subject: [PATCH] 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>
---
drivers/pci/quirks.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index cf96776d4bbf..8726698866b1 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -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 }
--
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