Merge tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 - skip AER driver error recovery callbacks for correctable errors
   reported via ACPI APEI, as we already do for errors reported via the
   native path (Tyler Baicar)

 - fix DPC shared interrupt handling (Alex Williamson)

 - print full DPC interrupt number (Keith Busch)

 - enable DPC only if AER is available (Keith Busch)

 - simplify DPC code (Bjorn Helgaas)

 - calculate ASPM L1 substate parameter instead of hardcoding it (Bjorn
   Helgaas)

 - enable Latency Tolerance Reporting for ASPM L1 substates (Bjorn
   Helgaas)

 - move ASPM internal interfaces out of public header (Bjorn Helgaas)

 - allow hot-removal of VGA devices (Mika Westerberg)

 - speed up unplug and shutdown by assuming Thunderbolt controllers
   don't support Command Completed events (Lukas Wunner)

 - add AtomicOps support for GPU and Infiniband drivers (Felix Kuehling,
   Jay Cornwall)

 - expose "ari_enabled" in sysfs to help NIC naming (Stuart Hayes)

 - clean up PCI DMA interface usage (Christoph Hellwig)

 - remove PCI pool API (replaced with DMA pool) (Romain Perier)

 - deprecate pci_get_bus_and_slot(), which assumed PCI domain 0 (Sinan
   Kaya)

 - move DT PCI code from drivers/of/ to drivers/pci/ (Rob Herring)

 - add PCI-specific wrappers for dev_info(), etc (Frederick Lawler)

 - remove warnings on sysfs mmap failure (Bjorn Helgaas)

 - quiet ROM validation messages (Alex Deucher)

 - remove redundant memory alloc failure messages (Markus Elfring)

 - fill in types for compile-time VGA and other I/O port resources
   (Bjorn Helgaas)

 - make "pci=pcie_scan_all" work for Root Ports as well as Downstream
   Ports to help AmigaOne X1000 (Bjorn Helgaas)

 - add SPDX tags to all PCI files (Bjorn Helgaas)

 - quirk Marvell 9128 DMA aliases (Alex Williamson)

 - quirk broken INTx disable on Ceton InfiniTV4 (Bjorn Helgaas)

 - fix CONFIG_PCI=n build by adding dummy pci_irqd_intx_xlate() (Niklas
   Cassel)

 - use DMA API to get MSI address for DesignWare IP (Niklas Cassel)

 - fix endpoint-mode DMA mask configuration (Kishon Vijay Abraham I)

 - fix ARTPEC-6 incorrect IS_ERR() usage (Wei Yongjun)

 - add support for ARTPEC-7 SoC (Niklas Cassel)

 - add endpoint-mode support for ARTPEC (Niklas Cassel)

 - add Cadence PCIe host and endpoint controller driver (Cyrille
   Pitchen)

 - handle multiple INTx status bits being set in dra7xx (Vignesh R)

 - translate dra7xx hwirq range to fix INTD handling (Vignesh R)

 - remove deprecated Exynos PHY initialization code (Jaehoon Chung)

 - fix MSI erratum workaround for HiSilicon Hip06/Hip07 (Dongdong Liu)

 - fix NULL pointer dereference in iProc BCMA driver (Ray Jui)

 - fix Keystone interrupt-controller-node lookup (Johan Hovold)

 - constify qcom driver structures (Julia Lawall)

 - rework Tegra config space mapping to increase space available for
   endpoints (Vidya Sagar)

 - simplify Tegra driver by using bus->sysdata (Manikanta Maddireddy)

 - remove PCI_REASSIGN_ALL_BUS usage on Tegra (Manikanta Maddireddy)

 - add support for Global Fabric Manager Server (GFMS) event to
   Microsemi Switchtec switch driver (Logan Gunthorpe)

 - add IDs for Switchtec PSX 24xG3 and PSX 48xG3 (Kelvin Cao)

* tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (140 commits)
  PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller
  dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe endpoint controller
  PCI: endpoint: Fix EPF device name to support multi-function devices
  PCI: endpoint: Add the function number as argument to EPC ops
  PCI: cadence: Add host driver for Cadence PCIe controller
  dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe host controller
  PCI: Add vendor ID for Cadence
  PCI: Add generic function to probe PCI host controllers
  PCI: generic: fix missing call of pci_free_resource_list()
  PCI: OF: Add generic function to parse and allocate PCI resources
  PCI: Regroup all PCI related entries into drivers/pci/Makefile
  PCI/DPC: Reformat DPC register definitions
  PCI/DPC: Add and use DPC Status register field definitions
  PCI/DPC: Squash dpc_rp_pio_get_info() into dpc_process_rp_pio_error()
  PCI/DPC: Remove unnecessary RP PIO register structs
  PCI/DPC: Push dpc->rp_pio_status assignment into dpc_rp_pio_get_info()
  PCI/DPC: Squash dpc_rp_pio_print_error() into dpc_rp_pio_get_info()
  PCI/DPC: Make RP PIO log size check more generic
  PCI/DPC: Rename local "status" to "dpc_status"
  PCI/DPC: Squash dpc_rp_pio_print_tlp_header() into dpc_rp_pio_print_error()
  ...

1 files changed, 8 insertions, 51 deletions

diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index a9c3378bca38..db4bf97c0e15 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -430,59 +430,16 @@ static void qedr_remove_sysfiles(struct qedr_dev *dev)
 
 static void qedr_pci_set_atomic(struct qedr_dev *dev, struct pci_dev *pdev)
 {
-	struct pci_dev *bridge;
-	u32 ctl2, cap2;
-	u16 flags;
-	int rc;
-
-	bridge = pdev->bus->self;
-	if (!bridge)
-		goto disable;
-
-	/* Check atomic routing support all the way to root complex */
-	while (bridge->bus->parent) {
-		rc = pcie_capability_read_word(bridge, PCI_EXP_FLAGS, &flags);
-		if (rc || ((flags & PCI_EXP_FLAGS_VERS) < 2))
-			goto disable;
-
-		rc = pcie_capability_read_dword(bridge, PCI_EXP_DEVCAP2, &cap2);
-		if (rc)
-			goto disable;
+	int rc = pci_enable_atomic_ops_to_root(pdev,
+					       PCI_EXP_DEVCAP2_ATOMIC_COMP64);
 
-		rc = pcie_capability_read_dword(bridge, PCI_EXP_DEVCTL2, &ctl2);
-		if (rc)
-			goto disable;
-
-		if (!(cap2 & PCI_EXP_DEVCAP2_ATOMIC_ROUTE) ||
-		    (ctl2 & PCI_EXP_DEVCTL2_ATOMIC_EGRESS_BLOCK))
-			goto disable;
-		bridge = bridge->bus->parent->self;
+	if (rc) {
+		dev->atomic_cap = IB_ATOMIC_NONE;
+		DP_DEBUG(dev, QEDR_MSG_INIT, "Atomic capability disabled\n");
+	} else {
+		dev->atomic_cap = IB_ATOMIC_GLOB;
+		DP_DEBUG(dev, QEDR_MSG_INIT, "Atomic capability enabled\n");
 	}
-
-	rc = pcie_capability_read_word(bridge, PCI_EXP_FLAGS, &flags);
-	if (rc || ((flags & PCI_EXP_FLAGS_VERS) < 2))
-		goto disable;
-
-	rc = pcie_capability_read_dword(bridge, PCI_EXP_DEVCAP2, &cap2);
-	if (rc || !(cap2 & PCI_EXP_DEVCAP2_ATOMIC_COMP64))
-		goto disable;
-
-	/* Set atomic operations */
-	pcie_capability_set_word(pdev, PCI_EXP_DEVCTL2,
-				 PCI_EXP_DEVCTL2_ATOMIC_REQ);
-	dev->atomic_cap = IB_ATOMIC_GLOB;
-
-	DP_DEBUG(dev, QEDR_MSG_INIT, "Atomic capability enabled\n");
-
-	return;
-
-disable:
-	pcie_capability_clear_word(pdev, PCI_EXP_DEVCTL2,
-				   PCI_EXP_DEVCTL2_ATOMIC_REQ);
-	dev->atomic_cap = IB_ATOMIC_NONE;
-
-	DP_DEBUG(dev, QEDR_MSG_INIT, "Atomic capability disabled\n");
-
 }
 
 static const struct qed_rdma_ops *qed_ops;