From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Add #defines for the Completion Timeout Disable feature and use them. No
functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
---
arch/powerpc/platforms/powernv/eeh-powernv.c | 6 +++---
include/uapi/linux/pci_regs.h | 2 ++
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c
index 4650fb294e7a..2f7cd0ef3cdc 100644
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -1654,14 +1654,14 @@ static int pnv_eeh_restore_vf_config(struct pci_dn *pdn)
eeh_ops->write_config(pdn, edev->pcie_cap + PCI_EXP_DEVCTL,
2, devctl);
- /* Disable Completion Timeout */
+ /* Disable Completion Timeout if possible */
eeh_ops->read_config(pdn, edev->pcie_cap + PCI_EXP_DEVCAP2,
4, &cap2);
- if (cap2 & 0x10) {
+ if (cap2 & PCI_EXP_DEVCAP2_COMP_TMOUT_DIS) {
eeh_ops->read_config(pdn,
edev->pcie_cap + PCI_EXP_DEVCTL2,
4, &cap2);
- cap2 |= 0x10;
+ cap2 |= PCI_EXP_DEVCTL2_COMP_TMOUT_DIS;
eeh_ops->write_config(pdn,
edev->pcie_cap + PCI_EXP_DEVCTL2,
4, cap2);
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index 70c2b2ade048..9dc67643fc18 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -622,6 +622,7 @@
* safely.
*/
#define PCI_EXP_DEVCAP2 36 /* Device Capabilities 2 */
+#define PCI_EXP_DEVCAP2_COMP_TMOUT_DIS 0x00000010 /* Completion Timeout Disable supported */
#define PCI_EXP_DEVCAP2_ARI 0x00000020 /* Alternative Routing-ID */
#define PCI_EXP_DEVCAP2_ATOMIC_ROUTE 0x00000040 /* Atomic Op routing */
#define PCI_EXP_DEVCAP2_ATOMIC_COMP64 0x00000100 /* Atomic 64-bit compare */
@@ -631,6 +632,7 @@
#define PCI_EXP_DEVCAP2_OBFF_WAKE 0x00080000 /* Re-use WAKE# for OBFF */
#define PCI_EXP_DEVCTL2 40 /* Device Control 2 */
#define PCI_EXP_DEVCTL2_COMP_TIMEOUT 0x000f /* Completion Timeout Value */
+#define PCI_EXP_DEVCTL2_COMP_TMOUT_DIS 0x0010 /* Completion Timeout Disable */
#define PCI_EXP_DEVCTL2_ARI 0x0020 /* Alternative Routing-ID */
#define PCI_EXP_DEVCTL2_ATOMIC_REQ 0x0040 /* Set Atomic requests */
#define PCI_EXP_DEVCTL2_ATOMIC_EGRESS_BLOCK 0x0080 /* Block atomic egress */
