Mellanox ConnectX-5 IB cards (MT27800) seem to cause a call trace when
unbound from their regular driver and attached to vfio-pci in order to pass
them through to a guest.
This goes away if the disable_idle_d3 option is used, so it looks like a
problem with the hardware handling D3 state. To fix that more permanently,
use a device quirk to disable D3 state for these devices.
We do this by renaming the existing quirk_no_ata_d3() more generally and
attaching it to the ConnectX-[45] devices (0x15b3:0x1013).
Signed-off-by: David Gibson <da...@gibson.dropbear.id.au>
---
drivers/pci/quirks.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 4700d24e5d55..add3f516ca12 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1315,23 +1315,24 @@ static void quirk_ide_samemode(struct pci_dev *pdev)
}
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10,
quirk_ide_samemode);
-/* Some ATA devices break if put into D3 */
-static void quirk_no_ata_d3(struct pci_dev *pdev)
+/* Some devices (including a number of ATA cards) break if put into D3 */
+static void quirk_no_d3(struct pci_dev *pdev)
{
pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3;
}
+
/* Quirk the legacy ATA devices only. The AHCI ones are ok */
DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID,
- PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
+ PCI_CLASS_STORAGE_IDE, 8, quirk_no_d3);
DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
- PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
+ PCI_CLASS_STORAGE_IDE, 8, quirk_no_d3);
/* ALi loses some register settings that we cannot then restore */
DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID,
- PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
+ PCI_CLASS_STORAGE_IDE, 8, quirk_no_d3);
/* VIA comes back fine but we need to keep it alive or ACPI GTM failures
occur when mode detecting */
DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID,
- PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
+ PCI_CLASS_STORAGE_IDE, 8, quirk_no_d3);
/*
* This was originally an Alpha-specific thing, but it really fits here.
@@ -3367,6 +3368,10 @@ static void mellanox_check_broken_intx_masking(struct
pci_dev *pdev)
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID,
mellanox_check_broken_intx_masking);
+/* Mellanox MT27800 (ConnectX-5) IB card seems to break with D3
+ * In particular this shows up when the device is bound to the vfio-pci driver
*/
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_MELLANOX,
PCI_DEVICE_ID_MELLANOX_CONNECTX4, quirk_no_d3)
+
static void quirk_no_bus_reset(struct pci_dev *dev)
{
dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET;
--
2.19.2
