diff options
Diffstat (limited to 'arch/arm/mach-dove/pcie.c')
| -rw-r--r-- | arch/arm/mach-dove/pcie.c | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/arch/arm/mach-dove/pcie.c b/arch/arm/mach-dove/pcie.c index ee91ac6b5ebf..3044b7e03890 100644 --- a/arch/arm/mach-dove/pcie.c +++ b/arch/arm/mach-dove/pcie.c @@ -1,11 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * arch/arm/mach-dove/pcie.c * * PCIe functions for Marvell Dove 88AP510 SoC - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. */ #include <linux/kernel.h> @@ -38,6 +35,7 @@ static int num_pcie_ports; static int __init dove_pcie_setup(int nr, struct pci_sys_data *sys) { struct pcie_port *pp; + struct resource realio; if (nr >= num_pcie_ports) return 0; @@ -53,10 +51,10 @@ static int __init dove_pcie_setup(int nr, struct pci_sys_data *sys) orion_pcie_setup(pp->base); - if (pp->index == 0) - pci_ioremap_io(sys->busnr * SZ_64K, DOVE_PCIE0_IO_PHYS_BASE); - else - pci_ioremap_io(sys->busnr * SZ_64K, DOVE_PCIE1_IO_PHYS_BASE); + realio.start = sys->busnr * SZ_64K; + realio.end = realio.start + SZ_64K - 1; + pci_remap_iospace(&realio, pp->index == 0 ? DOVE_PCIE0_IO_PHYS_BASE : + DOVE_PCIE1_IO_PHYS_BASE); /* * IORESOURCE_MEM @@ -135,18 +133,23 @@ static struct pci_ops pcie_ops = { .write = pcie_wr_conf, }; +/* + * The root complex has a hardwired class of PCI_CLASS_MEMORY_OTHER, when it + * is operating as a root complex this needs to be switched to + * PCI_CLASS_BRIDGE_HOST or Linux will errantly try to process the BAR's on + * the device. Decoding setup is handled by the orion code. + */ static void rc_pci_fixup(struct pci_dev *dev) { - /* - * Prevent enumeration of root complex. - */ if (dev->bus->parent == NULL && dev->devfn == 0) { - int i; - - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - dev->resource[i].start = 0; - dev->resource[i].end = 0; - dev->resource[i].flags = 0; + struct resource *r; + + dev->class &= 0xff; + dev->class |= PCI_CLASS_BRIDGE_HOST << 8; + pci_dev_for_each_resource(dev, r) { + r->start = 0; + r->end = 0; + r->flags = 0; } } } |