Merge branch 'linus' into percpu-cpumask-x86-for-linus-2

[linux-2.6-omap-h63xx.git] / arch / x86 / pci / pcbios.c

diff --git a/arch/x86/pci/pcbios.c b/arch/x86/pci/pcbios.c
index 10ac8c316c468b1161d5b5e17f88b60ddceba2ff..1c975cc9839e0617e3b08d245e91277ec10450e3 100644 (file)
--- a/arch/x86/pci/pcbios.c
+++ b/arch/x86/pci/pcbios.c
@@ -6,9 +6,8 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/uaccess.h>
-#include "pci.h"
-#include "pci-functions.h"
-
+#include <asm/pci_x86.h>
+#include <asm/pci-functions.h>
 
 /* BIOS32 signature: "_32_" */
 #define BIOS32_SIGNATURE       (('_' << 0) + ('3' << 8) + ('2' << 16) + ('_' << 24))
@@ -152,28 +151,6 @@ static int __devinit check_pcibios(void)
        return 0;
 }
 
-static int __devinit pci_bios_find_device (unsigned short vendor, unsigned short device_id,
-                                       unsigned short index, unsigned char *bus, unsigned char *device_fn)
-{
-       unsigned short bx;
-       unsigned short ret;
-
-       __asm__("lcall *(%%edi); cld\n\t"
-               "jc 1f\n\t"
-               "xor %%ah, %%ah\n"
-               "1:"
-               : "=b" (bx),
-                 "=a" (ret)
-               : "1" (PCIBIOS_FIND_PCI_DEVICE),
-                 "c" (device_id),
-                 "d" (vendor),
-                 "S" ((int) index),
-                 "D" (&pci_indirect));
-       *bus = (bx >> 8) & 0xff;
-       *device_fn = bx & 0xff;
-       return (int) (ret & 0xff00) >> 8;
-}
-
 static int pci_bios_read(unsigned int seg, unsigned int bus,
                         unsigned int devfn, int reg, int len, u32 *value)
 {
@@ -198,6 +175,11 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
                          "b" (bx),
                          "D" ((long)reg),
                          "S" (&pci_indirect));
+               /*
+                * Zero-extend the result beyond 8 bits, do not trust the
+                * BIOS having done it:
+                */
+               *value &= 0xff;
                break;
        case 2:
                __asm__("lcall *(%%esi); cld\n\t"
@@ -210,6 +192,11 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
                          "b" (bx),
                          "D" ((long)reg),
                          "S" (&pci_indirect));
+               /*
+                * Zero-extend the result beyond 16 bits, do not trust the
+                * BIOS having done it:
+                */
+               *value &= 0xffff;
                break;
        case 4:
                __asm__("lcall *(%%esi); cld\n\t"
@@ -353,55 +340,6 @@ static struct pci_raw_ops * __devinit pci_find_bios(void)
        return NULL;
 }
 
-/*
- * Sort the device list according to PCI BIOS. Nasty hack, but since some
- * fool forgot to define the `correct' device order in the PCI BIOS specs
- * and we want to be (possibly bug-to-bug ;-]) compatible with older kernels
- * which used BIOS ordering, we are bound to do this...
- */
-
-void __devinit pcibios_sort(void)
-{
-       LIST_HEAD(sorted_devices);
-       struct list_head *ln;
-       struct pci_dev *dev, *d;
-       int idx, found;
-       unsigned char bus, devfn;
-
-       DBG("PCI: Sorting device list...\n");
-       while (!list_empty(&pci_devices)) {
-               ln = pci_devices.next;
-               dev = pci_dev_g(ln);
-               idx = found = 0;
-               while (pci_bios_find_device(dev->vendor, dev->device, idx, &bus, &devfn) == PCIBIOS_SUCCESSFUL) {
-                       idx++;
-                       list_for_each(ln, &pci_devices) {
-                               d = pci_dev_g(ln);
-                               if (d->bus->number == bus && d->devfn == devfn) {
-                                       list_move_tail(&d->global_list, &sorted_devices);
-                                       if (d == dev)
-                                               found = 1;
-                                       break;
-                               }
-                       }
-                       if (ln == &pci_devices) {
-                               printk(KERN_WARNING "PCI: BIOS reporting unknown device %02x:%02x\n", bus, devfn);
-                               /*
-                                * We must not continue scanning as several buggy BIOSes
-                                * return garbage after the last device. Grr.
-                                */
-                               break;
-                       }
-               }
-               if (!found) {
-                       printk(KERN_WARNING "PCI: Device %s not found by BIOS\n",
-                               pci_name(dev));
-                       list_move_tail(&dev->global_list, &sorted_devices);
-               }
-       }
-       list_splice(&sorted_devices, &pci_devices);
-}
-
 /*
  *  BIOS Functions for IRQ Routing
  */
@@ -485,7 +423,6 @@ void __init pci_pcbios_init(void)
 {
        if ((pci_probe & PCI_PROBE_BIOS) 
                && ((raw_pci_ops = pci_find_bios()))) {
-               pci_probe |= PCI_BIOS_SORT;
                pci_bios_present = 1;
        }
 }