Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[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 504e634..70b9d21 100644 (file)
--- a/arch/x86_64/kernel/aperture.c
+++ b/arch/x86_64/kernel/aperture.c
@@ -23,6 +23,7 @@
 #include <asm/io.h>
 #include <asm/proto.h>
 #include <asm/pci-direct.h>
+#include <asm/dma.h>
 
 int iommu_aperture;
 int iommu_aperture_disabled __initdata = 0;
@@ -40,11 +41,7 @@ int fix_aperture __initdata = 1;
 
 static u32 __init allocate_aperture(void) 
 {
-#ifdef CONFIG_DISCONTIGMEM
        pg_data_t *nd0 = NODE_DATA(0);
-#else
-       pg_data_t *nd0 = &contig_page_data;
-#endif 
        u32 aper_size;
        void *p; 
 
@@ -63,7 +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, (unsigned long)p, aper_size); 
+                       free_bootmem_node(nd0, __pa(p), aper_size); 
                return 0;
        }
        printk("Mapping aperture over %d KB of RAM @ %lx\n",
@@ -83,7 +80,7 @@ static int __init aperture_valid(char *name, u64 aper_base, u32 aper_size)
                printk("Aperture from %s beyond 4GB. Ignoring.\n",name);
                return 0; 
        }
-       if (e820_mapped(aper_base, aper_base + aper_size, E820_RAM)) {  
+       if (e820_any_mapped(aper_base, aper_base + aper_size, E820_RAM)) {
                printk("Aperture from %s pointing to e820 RAM. Ignoring.\n",name);
                return 0; 
        } 
@@ -164,7 +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 < 32; num++) { 
+       for (num = 0; num < 256; num++) { 
                for (slot = 0; slot < 32; slot++) { 
                        for (func = 0; func < 8; func++) { 
                                u32 class, cap;
@@ -200,7 +197,7 @@ static __u32 __init search_agp_bridge(u32 *order, int *valid_agp)
 void __init iommu_hole_init(void) 
 { 
        int fix, num; 
-       u32 aper_size, aper_alloc = 0, aper_order, last_aper_order = 0;
+       u32 aper_size, aper_alloc = 0, aper_order = 0, last_aper_order = 0;
        u64 aper_base, last_aper_base = 0;
        int valid_agp = 0;
 
@@ -249,7 +246,9 @@ void __init iommu_hole_init(void)
                
        if (aper_alloc) { 
                /* Got the aperture from the AGP bridge */
-       } else if ((!no_iommu && end_pfn >= 0xffffffff>>PAGE_SHIFT) ||
+       } else if (swiotlb && !valid_agp) {
+               /* Do nothing */
+       } else if ((!no_iommu && end_pfn > MAX_DMA32_PFN) ||
                   force_iommu ||
                   valid_agp ||
                   fallback_aper_force) {