diff options
Diffstat (limited to 'arch/x86/pci/acpi.c')
| -rw-r--r-- | arch/x86/pci/acpi.c | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c index d1ffb57..d95de2f 100644 --- a/arch/x86/pci/acpi.c +++ b/arch/x86/pci/acpi.c @@ -4,7 +4,6 @@ #include <linux/irq.h> #include <linux/dmi.h> #include <asm/numa.h> -#include <asm/e820.h> #include "pci.h" struct pci_root_info { @@ -15,11 +14,6 @@ struct pci_root_info { int busnum; }; -struct gap_info { - unsigned long gapstart; - unsigned long gapsize; -}; - static acpi_status resource_to_addr(struct acpi_resource *resource, struct acpi_resource_address64 *addr) @@ -116,78 +110,6 @@ adjust_transparent_bridge_resources(struct pci_bus *bus) } } -static acpi_status search_gap(struct acpi_resource *resource, void *data) -{ - struct acpi_resource_address64 addr; - acpi_status status; - struct gap_info *gap = data; - unsigned long long start_addr, end_addr; - - status = resource_to_addr(resource, &addr); - if (ACPI_SUCCESS(status) && - addr.resource_type == ACPI_MEMORY_RANGE && - addr.address_length > gap->gapsize) { - start_addr = addr.minimum + addr.translation_offset; - /* - * We want space only in the 32bit address range - */ - if (start_addr < UINT_MAX) { - end_addr = start_addr + addr.address_length; - e820_search_gap(&gap->gapstart, &gap->gapsize, - start_addr, end_addr); - } - } - - return AE_OK; -} - -/* - * Search for a hole in the 32 bit address space for PCI to assign MMIO - * resources, for hotplug or unconfigured resources. - * We query the CRS object of the PCI root device to look for possible producer - * resources in the tree and consider these while calulating the start address - * for this hole. - */ -static void pci_setup_gap(acpi_handle *handle) -{ - struct gap_info gap; - acpi_status status; - - gap.gapstart = 0; - gap.gapsize = 0x400000; - - status = acpi_walk_resources(handle, METHOD_NAME__CRS, - search_gap, &gap); - - if (ACPI_SUCCESS(status)) { - unsigned long round; - - if (!gap.gapstart) { - printk(KERN_ERR "ACPI: Warning: Cannot find a gap " - "in the 32bit address range for PCI\n" - "ACPI: PCI devices may collide with " - "hotpluggable memory address range\n"); - } - /* - * Round the gapstart, uses the same logic as in - * e820_gap_setup - */ - round = 0x100000; - while ((gap.gapsize >> 4) > round) - round += round; - /* Fun with two's complement */ - pci_mem_start = (gap.gapstart + round) & -round; - - printk(KERN_INFO "ACPI: PCI resources should " - "start at %lx (gap: %lx:%lx)\n", - pci_mem_start, gap.gapstart, gap.gapsize); - } else { - printk(KERN_ERR "ACPI: Error while searching for gap in " - "the 32bit address range for PCI\n"); - } -} - - static void get_current_resources(struct acpi_device *device, int busnum, int domain, struct pci_bus *bus) @@ -293,8 +215,6 @@ struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int do if (bus && (pci_probe & PCI_USE__CRS)) get_current_resources(device, busnum, domain, bus); - - pci_setup_gap(device->handle); return bus; } |
