linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / arch / x86_64 / kernel / aperture.c

diff --git a/arch/x86_64/kernel/aperture.c b/arch/x86_64/kernel/aperture.c
index 58af8e7..a0f955b 100644 (file)
--- a/arch/x86_64/kernel/aperture.c
+++ b/arch/x86_64/kernel/aperture.c
@@ -8,7 +8,9 @@
  * because only the bootmem allocator can allocate 32+MB. 
  * 
  * Copyright 2002 Andi Kleen, SuSE Labs.
+ * $Id: aperture.c,v 1.7 2003/08/01 03:36:18 ak Exp $
  */
+#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/init.h>
@@ -22,7 +24,6 @@
 #include <asm/proto.h>
 #include <asm/pci-direct.h>
 #include <asm/dma.h>
-#include <asm/k8.h>
 
 int iommu_aperture;
 int iommu_aperture_disabled __initdata = 0;
@@ -36,6 +37,8 @@ int fix_aperture __initdata = 1;
 /* This code runs before the PCI subsystem is initialized, so just
    access the northbridge directly. */
 
+#define NB_ID_3 (PCI_VENDOR_ID_AMD | (0x1103<<16))
+
 static u32 __init allocate_aperture(void) 
 {
        pg_data_t *nd0 = NODE_DATA(0);
@@ -57,7 +60,7 @@ static u32 __init allocate_aperture(void)
                printk("Cannot allocate aperture memory hole (%p,%uK)\n",
                       p, aper_size>>10);
                if (p)
-                       free_bootmem_node(nd0, __pa(p), aper_size); 
+                       free_bootmem_node(nd0, (unsigned long)p, aper_size); 
                return 0;
        }
        printk("Mapping aperture over %d KB of RAM @ %lx\n",
@@ -65,20 +68,20 @@ static u32 __init allocate_aperture(void)
        return (u32)__pa(p); 
 }
 
-static int __init aperture_valid(u64 aper_base, u32 aper_size)
+static int __init aperture_valid(char *name, u64 aper_base, u32 aper_size) 
 { 
        if (!aper_base) 
                return 0;
        if (aper_size < 64*1024*1024) { 
-               printk("Aperture too small (%d MB)\n", aper_size>>20);
+               printk("Aperture from %s too small (%d MB)\n", name, aper_size>>20); 
                return 0;
        }
        if (aper_base + aper_size >= 0xffffffff) { 
-               printk("Aperture beyond 4GB. Ignoring.\n");
+               printk("Aperture from %s beyond 4GB. Ignoring.\n",name);
                return 0; 
        }
-       if (e820_any_mapped(aper_base, aper_base + aper_size, E820_RAM)) {
-               printk("Aperture pointing to e820 RAM. Ignoring.\n");
+       if (e820_mapped(aper_base, aper_base + aper_size, E820_RAM)) {  
+               printk("Aperture from %s pointing to e820 RAM. Ignoring.\n",name);
                return 0; 
        } 
        return 1;
@@ -137,7 +140,7 @@ static __u32 __init read_agp(int num, int slot, int func, int cap, u32 *order)
        printk("Aperture from AGP @ %Lx size %u MB (APSIZE %x)\n", 
               aper, 32 << *order, apsizereg);
 
-       if (!aperture_valid(aper, (32*1024*1024) << *order))
+       if (!aperture_valid("AGP bridge", aper, (32*1024*1024) << *order))
            return 0;
        return (u32)aper; 
 } 
@@ -158,7 +161,7 @@ static __u32 __init search_agp_bridge(u32 *order, int *valid_agp)
        int num, slot, func;
 
        /* Poor man's PCI discovery */
-       for (num = 0; num < 256; num++) { 
+       for (num = 0; num < 32; num++) { 
                for (slot = 0; slot < 32; slot++) { 
                        for (func = 0; func < 8; func++) { 
                                u32 class, cap;
@@ -205,10 +208,10 @@ void __init iommu_hole_init(void)
 
        fix = 0;
        for (num = 24; num < 32; num++) {               
-               if (!early_is_k8_nb(read_pci_config(0, num, 3, 0x00)))
-                       continue;
+               char name[30];
+               if (read_pci_config(0, num, 3, 0x00) != NB_ID_3) 
+                       continue;       
 
-               iommu_detected = 1;
                iommu_aperture = 1; 
 
                aper_order = (read_pci_config(0, num, 3, 0x90) >> 1) & 7; 
@@ -219,7 +222,9 @@ void __init iommu_hole_init(void)
                printk("CPU %d: aperture @ %Lx size %u MB\n", num-24, 
                       aper_base, aper_size>>20);
                
-               if (!aperture_valid(aper_base, aper_size)) {
+               sprintf(name, "northbridge cpu %d", num-24); 
+
+               if (!aperture_valid(name, aper_base, aper_size)) { 
                        fix = 1; 
                        break; 
                }
@@ -268,7 +273,7 @@ void __init iommu_hole_init(void)
 
        /* Fix up the north bridges */
        for (num = 24; num < 32; num++) {               
-               if (!early_is_k8_nb(read_pci_config(0, num, 3, 0x00)))
+               if (read_pci_config(0, num, 3, 0x00) != NB_ID_3) 
                        continue;       
 
                /* Don't enable translation yet. That is done later.