From 8953aab1e80fd299d6185a57edaff733fa5c6a55 Mon Sep 17 00:00:00 2001 From: Lorenzo Pieralisi Date: Wed, 29 Jul 2015 12:33:18 +0100 Subject: ARM/PCI, designware, xilinx: Use pci_scan_root_bus_msi() ARM previously stored the msi_controller pointer in its sysdata, struct pci_sys_data, and implemented pcibios_msi_controller() to retrieve it. That made PCI host controller drivers specific to ARM because they had to put the msi_controller pointer in the ARM-specific pci_sys_data. There is now a generic mechanism, pci_scan_root_bus_msi(), for giving the msi_controller pointer to the PCI core. Use this for all ARM systems and for the DesignWare and Xilinx PCI host controller drivers. This removes an ARM dependency from the DesignWare, DRA7xx, EXYNOS, i.MX6, Keystone, Layerscape, SPEAr13xx, and Xilinx drivers. [bhelgaas: changelog, split into separate patch] Suggested-by: Russell King Signed-off-by: Lorenzo Pieralisi Signed-off-by: Bjorn Helgaas Acked-by: Jingoo Han CC: Pratyush Anand CC: Arnd Bergmann CC: Simon Horman CC: Russell King CC: Thomas Petazzoni CC: Thierry Reding CC: Michal Simek CC: Marc Zyngier --- drivers/pci/host/pcie-designware.c | 12 +++++++++--- drivers/pci/host/pcie-xilinx.c | 11 ++++++++--- 2 files changed, 17 insertions(+), 6 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c index 69486be7181e..fe11cc175f77 100644 --- a/drivers/pci/host/pcie-designware.c +++ b/drivers/pci/host/pcie-designware.c @@ -526,7 +526,6 @@ int dw_pcie_host_init(struct pcie_port *pp) #ifdef CONFIG_PCI_MSI dw_pcie_msi_chip.dev = pp->dev; - dw_pci.msi_ctrl = &dw_pcie_msi_chip; #endif dw_pci.nr_controllers = 1; @@ -708,8 +707,15 @@ static struct pci_bus *dw_pcie_scan_bus(int nr, struct pci_sys_data *sys) struct pcie_port *pp = sys_to_pcie(sys); pp->root_bus_nr = sys->busnr; - bus = pci_scan_root_bus(pp->dev, sys->busnr, - &dw_pcie_ops, sys, &sys->resources); + + if (IS_ENABLED(CONFIG_PCI_MSI)) + bus = pci_scan_root_bus_msi(pp->dev, sys->busnr, &dw_pcie_ops, + sys, &sys->resources, + &dw_pcie_msi_chip); + else + bus = pci_scan_root_bus(pp->dev, sys->busnr, &dw_pcie_ops, + sys, &sys->resources); + if (!bus) return NULL; diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/host/pcie-xilinx.c index f1a06a091ccb..38d3114b97d3 100644 --- a/drivers/pci/host/pcie-xilinx.c +++ b/drivers/pci/host/pcie-xilinx.c @@ -647,9 +647,15 @@ static struct pci_bus *xilinx_pcie_scan_bus(int nr, struct pci_sys_data *sys) struct pci_bus *bus; port->root_busno = sys->busnr; - bus = pci_scan_root_bus(port->dev, sys->busnr, &xilinx_pcie_ops, - sys, &sys->resources); + if (IS_ENABLED(CONFIG_PCI_MSI)) + bus = pci_scan_root_bus_msi(port->dev, sys->busnr, + &xilinx_pcie_ops, sys, + &sys->resources, + &xilinx_pcie_msi_chip); + else + bus = pci_scan_root_bus(port->dev, sys->busnr, + &xilinx_pcie_ops, sys, &sys->resources); return bus; } @@ -847,7 +853,6 @@ static int xilinx_pcie_probe(struct platform_device *pdev) #ifdef CONFIG_PCI_MSI xilinx_pcie_msi_chip.dev = port->dev; - hw.msi_ctrl = &xilinx_pcie_msi_chip; #endif pci_common_init_dev(dev, &hw); -- cgit v1.2.3