diff options
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 9ff7183e25a2..14d24b4fc508 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -7,6 +7,7 @@ * Copyright 1997 -- 2000 Martin Mares <mj@ucw.cz> */ +#include <linux/acpi.h> #include <linux/kernel.h> #include <linux/delay.h> #include <linux/dmi.h> @@ -26,7 +27,9 @@ #include <linux/device.h> #include <linux/pm_runtime.h> #include <linux/pci_hotplug.h> +#include <linux/vmalloc.h> #include <asm/setup.h> +#include <asm/dma.h> #include <linux/aer.h> #include "pci.h" @@ -82,6 +85,9 @@ unsigned long pci_cardbus_mem_size = DEFAULT_CARDBUS_MEM_SIZE; unsigned long pci_hotplug_io_size = DEFAULT_HOTPLUG_IO_SIZE; unsigned long pci_hotplug_mem_size = DEFAULT_HOTPLUG_MEM_SIZE; +#define DEFAULT_HOTPLUG_BUS_SIZE 1 +unsigned long pci_hotplug_bus_size = DEFAULT_HOTPLUG_BUS_SIZE; + enum pcie_bus_config_types pcie_bus_config = PCIE_BUS_DEFAULT; /* @@ -3340,6 +3346,23 @@ int __weak pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr) #endif } +/** + * pci_unmap_iospace - Unmap the memory mapped I/O space + * @res: resource to be unmapped + * + * Unmap the CPU virtual address @res from virtual address space. + * Only architectures that have memory mapped IO functions defined + * (and the PCI_IOBASE value defined) should call this function. + */ +void pci_unmap_iospace(struct resource *res) +{ +#if defined(PCI_IOBASE) && defined(CONFIG_MMU) + unsigned long vaddr = (unsigned long)PCI_IOBASE + res->start; + + unmap_kernel_range(vaddr, resource_size(res)); +#endif +} + static void __pci_set_master(struct pci_dev *dev, bool enable) { u16 old_cmd, cmd; @@ -5072,7 +5095,7 @@ static ssize_t pci_resource_alignment_store(struct bus_type *bus, return pci_set_resource_alignment_param(buf, count); } -BUS_ATTR(resource_alignment, 0644, pci_resource_alignment_show, +static BUS_ATTR(resource_alignment, 0644, pci_resource_alignment_show, pci_resource_alignment_store); static int __init pci_resource_alignment_sysfs_init(void) @@ -5098,7 +5121,7 @@ int pci_get_new_domain_nr(void) } #ifdef CONFIG_PCI_DOMAINS_GENERIC -void pci_bus_assign_domain_nr(struct pci_bus *bus, struct device *parent) +static int of_pci_bus_find_domain_nr(struct device *parent) { static int use_dt_domains = -1; int domain = -1; @@ -5142,7 +5165,13 @@ void pci_bus_assign_domain_nr(struct pci_bus *bus, struct device *parent) domain = -1; } - bus->domain_nr = domain; + return domain; +} + +int pci_bus_find_domain_nr(struct pci_bus *bus, struct device *parent) +{ + return acpi_disabled ? of_pci_bus_find_domain_nr(parent) : + acpi_pci_bus_find_domain_nr(bus); } #endif #endif @@ -5196,6 +5225,11 @@ static int __init pci_setup(char *str) pci_hotplug_io_size = memparse(str + 9, &str); } else if (!strncmp(str, "hpmemsize=", 10)) { pci_hotplug_mem_size = memparse(str + 10, &str); + } else if (!strncmp(str, "hpbussize=", 10)) { + pci_hotplug_bus_size = + simple_strtoul(str + 10, &str, 0); + if (pci_hotplug_bus_size > 0xff) + pci_hotplug_bus_size = DEFAULT_HOTPLUG_BUS_SIZE; } else if (!strncmp(str, "pcie_bus_tune_off", 17)) { pcie_bus_config = PCIE_BUS_TUNE_OFF; } else if (!strncmp(str, "pcie_bus_safe", 13)) { |