[PATCH 1/3] pci: add "fundamental reset" quirk

[Alexey Kardashevskiy <aik@ozlabs.ru>]

From: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
---
 drivers/pci/quirks.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index f6c31fa..f3eedbf 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -3271,6 +3271,19 @@ static int reset_chelsio_generic_dev(struct pci_dev *dev, int probe)
 	return 0;
 }
 
+static int reset_fundamental(struct pci_dev *dev, int probe)
+{
+	if (probe)
+		return 0;
+
+	pci_set_pcie_reset_state(dev, pcie_hot_reset);
+	msleep(250);
+	pci_set_pcie_reset_state(dev, pcie_deassert_reset);
+	msleep(1800);
+
+	return 0;
+}
+
 #define PCI_DEVICE_ID_INTEL_82599_SFP_VF   0x10ed
 #define PCI_DEVICE_ID_INTEL_IVB_M_VGA      0x0156
 #define PCI_DEVICE_ID_INTEL_IVB_M2_VGA     0x0166
@@ -3286,6 +3299,14 @@ static const struct pci_dev_reset_methods pci_dev_reset_methods[] = {
 		reset_intel_generic_dev },
 	{ PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
 		reset_chelsio_generic_dev },
+
+	{ PCI_VENDOR_ID_IBM, PCI_ANY_ID,
+		reset_fundamental },
+	{ PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID,
+		reset_fundamental },
+	{ PCI_VENDOR_ID_TI, PCI_ANY_ID,
+		reset_fundamental },
+
 	{ 0 }
 };
 
-- 
1.8.4.rc4