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authorJeff Garrett <jeff@jgarrett.org>2010-01-27 22:02:26 -0600
committerJesse Barnes <jbarnes@virtuousgeek.org>2010-01-28 08:24:11 -0800
commite8e06eae4ffd683931b928f460c11c40cd3f7fd8 (patch)
treed8f1ef374663fd7ad5592adeb6427518acfb4098 /arch/x86
parentbd1f46deba615971a58193afd0202878cadf19a7 (diff)
x86/PCI: remove IOH range fetching
Turned out to cause trouble on single IOH machines, and is superceded by _CRS on multi-IOH machines with production BIOSes. Signed-off-by: Jeff Garrett <jeff@jgarrett.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/pci/Makefile2
-rw-r--r--arch/x86/pci/intel_bus.c94
2 files changed, 1 insertions, 95 deletions
diff --git a/arch/x86/pci/Makefile b/arch/x86/pci/Makefile
index 564b008a51c..39fba37f702 100644
--- a/arch/x86/pci/Makefile
+++ b/arch/x86/pci/Makefile
@@ -15,7 +15,7 @@ obj-$(CONFIG_X86_NUMAQ) += numaq_32.o
obj-y += common.o early.o
obj-y += amd_bus.o
-obj-$(CONFIG_X86_64) += bus_numa.o intel_bus.o
+obj-$(CONFIG_X86_64) += bus_numa.o
ifeq ($(CONFIG_PCI_DEBUG),y)
EXTRA_CFLAGS += -DDEBUG
diff --git a/arch/x86/pci/intel_bus.c b/arch/x86/pci/intel_bus.c
deleted file mode 100644
index f81a2fa8fe2..00000000000
--- a/arch/x86/pci/intel_bus.c
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * to read io range from IOH pci conf, need to do it after mmconfig is there
- */
-
-#include <linux/delay.h>
-#include <linux/dmi.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <asm/pci_x86.h>
-
-#include "bus_numa.h"
-
-static inline void print_ioh_resources(struct pci_root_info *info)
-{
- int res_num;
- int busnum;
- int i;
-
- printk(KERN_DEBUG "IOH bus: [%02x, %02x]\n",
- info->bus_min, info->bus_max);
- res_num = info->res_num;
- busnum = info->bus_min;
- for (i = 0; i < res_num; i++) {
- struct resource *res;
-
- res = &info->res[i];
- printk(KERN_DEBUG "IOH bus: %02x index %x %s: [%llx, %llx]\n",
- busnum, i,
- (res->flags & IORESOURCE_IO) ? "io port" :
- "mmio",
- res->start, res->end);
- }
-}
-
-#define IOH_LIO 0x108
-#define IOH_LMMIOL 0x10c
-#define IOH_LMMIOH 0x110
-#define IOH_LMMIOH_BASEU 0x114
-#define IOH_LMMIOH_LIMITU 0x118
-#define IOH_LCFGBUS 0x11c
-
-static void __devinit pci_root_bus_res(struct pci_dev *dev)
-{
- u16 word;
- u32 dword;
- struct pci_root_info *info;
- u16 io_base, io_end;
- u32 mmiol_base, mmiol_end;
- u64 mmioh_base, mmioh_end;
- int bus_base, bus_end;
-
- /* some sys doesn't get mmconf enabled */
- if (dev->cfg_size < 0x120)
- return;
-
- if (pci_root_num >= PCI_ROOT_NR) {
- printk(KERN_DEBUG "intel_bus.c: PCI_ROOT_NR is too small\n");
- return;
- }
-
- info = &pci_root_info[pci_root_num];
- pci_root_num++;
-
- pci_read_config_word(dev, IOH_LCFGBUS, &word);
- bus_base = (word & 0xff);
- bus_end = (word & 0xff00) >> 8;
- sprintf(info->name, "PCI Bus #%02x", bus_base);
- info->bus_min = bus_base;
- info->bus_max = bus_end;
-
- pci_read_config_word(dev, IOH_LIO, &word);
- io_base = (word & 0xf0) << (12 - 4);
- io_end = (word & 0xf000) | 0xfff;
- update_res(info, io_base, io_end, IORESOURCE_IO, 0);
-
- pci_read_config_dword(dev, IOH_LMMIOL, &dword);
- mmiol_base = (dword & 0xff00) << (24 - 8);
- mmiol_end = (dword & 0xff000000) | 0xffffff;
- update_res(info, mmiol_base, mmiol_end, IORESOURCE_MEM, 0);
-
- pci_read_config_dword(dev, IOH_LMMIOH, &dword);
- mmioh_base = ((u64)(dword & 0xfc00)) << (26 - 10);
- mmioh_end = ((u64)(dword & 0xfc000000) | 0x3ffffff);
- pci_read_config_dword(dev, IOH_LMMIOH_BASEU, &dword);
- mmioh_base |= ((u64)(dword & 0x7ffff)) << 32;
- pci_read_config_dword(dev, IOH_LMMIOH_LIMITU, &dword);
- mmioh_end |= ((u64)(dword & 0x7ffff)) << 32;
- update_res(info, mmioh_base, mmioh_end, IORESOURCE_MEM, 0);
-
- print_ioh_resources(info);
-}
-
-/* intel IOH */
-DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, pci_root_bus_res);