Merge branch 'remotes/lorenzo/pci/msi'

- Convert tegra to MSI domains (Marc Zyngier)

- Use rcar controller address as MSI doorbell instead of allocating a page
  (Marc Zyngier)

- Convert rcar to MSI domains (Marc Zyngier)

- Use xilinx port structure as MSI doorbell instead of allocating a page
  (Marc Zyngier)

- Convert xilinx to MSI domains (Marc Zyngier)

- Remove unused Hyper-V msi_controller structure (Marc Zyngier)

- Remove unused PCI core msi_controller support (Marc Zyngier)

- Remove struct msi_controller (Marc Zyngier)

- Remove unused default_teardown_msi_irqs() (Marc Zyngier)

- Let host bridges declare their reliance on MSI domains (Marc Zyngier)

- Make pci_host_common_probe() declare its reliance on MSI domains (Marc
  Zyngier)

- Advertise mediatek lack of built-in MSI handling (Thomas Gleixner)

- Document ways of ending up with NO_MSI (Marc Zyngier)

- Refactor HT advertising of NO_MSI flag (Marc Zyngier)

* remotes/lorenzo/pci/msi:
  PCI: Refactor HT advertising of NO_MSI flag
  PCI/MSI: Document the various ways of ending up with NO_MSI
  PCI: mediatek: Advertise lack of built-in MSI handling
  PCI/MSI: Make pci_host_common_probe() declare its reliance on MSI domains
  PCI/MSI: Let PCI host bridges declare their reliance on MSI domains
  PCI/MSI: Kill default_teardown_msi_irqs()
  PCI/MSI: Kill msi_controller structure
  PCI/MSI: Drop use of msi_controller from core code
  PCI: hv: Drop msi_controller structure
  PCI: xilinx: Convert to MSI domains
  PCI: xilinx: Don't allocate extra memory for the MSI capture address
  PCI: rcar: Convert to MSI domains
  PCI: rcar: Don't allocate extra memory for the MSI capture address
  PCI: tegra: Convert to MSI domains

Author: bjorn-helgaas

drivers/pci/controller/Kconfig

@@ -41,7 +41,6 @@ config PCI_TEGRA
 	bool "NVIDIA Tegra PCIe controller"
 	depends on ARCH_TEGRA || COMPILE_TEST
 	depends on PCI_MSI_IRQ_DOMAIN
-	select PCI_MSI_ARCH_FALLBACKS
 	help
 	  Say Y here if you want support for the PCIe host controller found
 	  on NVIDIA Tegra SoCs.
@@ -59,7 +58,6 @@ config PCIE_RCAR_HOST
 	bool "Renesas R-Car PCIe host controller"
 	depends on ARCH_RENESAS || COMPILE_TEST
 	depends on PCI_MSI_IRQ_DOMAIN
-	select PCI_MSI_ARCH_FALLBACKS
 	help
 	  Say Y here if you want PCIe controller support on R-Car SoCs in host
 	  mode.
@@ -88,7 +86,7 @@ config PCI_HOST_GENERIC
 config PCIE_XILINX
 	bool "Xilinx AXI PCIe host bridge support"
 	depends on OF || COMPILE_TEST
-	select PCI_MSI_ARCH_FALLBACKS
+	depends on PCI_MSI_IRQ_DOMAIN
 	help
 	  Say 'Y' here if you want kernel to support the Xilinx AXI PCIe
 	  Host Bridge driver.

drivers/pci/controller/pci-host-common.c

@@ -79,6 +79,7 @@ int pci_host_common_probe(struct platform_device *pdev)
 
 	bridge->sysdata = cfg;
 	bridge->ops = (struct pci_ops *)&ops->pci_ops;
+	bridge->msi_domain = true;
 
 	return pci_host_probe(bridge);
 }

drivers/pci/controller/pci-hyperv.c

@@ -473,7 +473,6 @@ struct hv_pcibus_device {
 	struct list_head dr_list;
 
 	struct msi_domain_info msi_info;
-	struct msi_controller msi_chip;
 	struct irq_domain *irq_domain;
 
 	spinlock_t retarget_msi_interrupt_lock;
@@ -1866,9 +1865,6 @@ static int create_root_hv_pci_bus(struct hv_pcibus_device *hbus)
 	if (!hbus->pci_bus)
 		return -ENODEV;
 
-	hbus->pci_bus->msi = &hbus->msi_chip;
-	hbus->pci_bus->msi->dev = &hbus->hdev->device;
-
 	pci_lock_rescan_remove();
 	pci_scan_child_bus(hbus->pci_bus);
 	hv_pci_assign_numa_node(hbus);