Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild...

[linux-2.6-omap-h63xx.git] / arch / ia64 / kernel / acpi.c

diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 5d1eb7ee2bf6562282bdccd92520271ca7aedc13..bd7acc71e8a9e4d408e50102e513bbe4a948a064 100644 (file)
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -52,6 +52,7 @@
 #include <asm/numa.h>
 #include <asm/sal.h>
 #include <asm/cyclone.h>
+#include <asm/xen/hypervisor.h>
 
 #define BAD_MADT_ENTRY(entry, end) (                                        \
                (!entry) || (unsigned long)entry + sizeof(*entry) > end ||  \
@@ -91,6 +92,9 @@ acpi_get_sysname(void)
        struct acpi_table_rsdp *rsdp;
        struct acpi_table_xsdt *xsdt;
        struct acpi_table_header *hdr;
+#ifdef CONFIG_DMAR
+       u64 i, nentries;
+#endif
 
        rsdp_phys = acpi_find_rsdp();
        if (!rsdp_phys) {
@@ -121,7 +125,21 @@ acpi_get_sysname(void)
                        return "uv";
                else
                        return "sn2";
+       } else if (xen_pv_domain() && !strcmp(hdr->oem_id, "XEN")) {
+               return "xen";
+       }
+
+#ifdef CONFIG_DMAR
+       /* Look for Intel IOMMU */
+       nentries = (hdr->length - sizeof(*hdr)) /
+                        sizeof(xsdt->table_offset_entry[0]);
+       for (i = 0; i < nentries; i++) {
+               hdr = __va(xsdt->table_offset_entry[i]);
+               if (strncmp(hdr->signature, ACPI_SIG_DMAR,
+                       sizeof(ACPI_SIG_DMAR) - 1) == 0)
+                       return "dig_vtd";
        }
+#endif
 
        return "dig";
 #else
@@ -137,6 +155,10 @@ acpi_get_sysname(void)
        return "uv";
 # elif defined (CONFIG_IA64_DIG)
        return "dig";
+# elif defined (CONFIG_IA64_XEN_GUEST)
+       return "xen";
+# elif defined(CONFIG_IA64_DIG_VTD)
+       return "dig_vtd";
 # else
 #      error Unknown platform.  Fix acpi.c.
 # endif
@@ -656,6 +678,30 @@ static int __init acpi_parse_fadt(struct acpi_table_header *table)
        return 0;
 }
 
+int __init early_acpi_boot_init(void)
+{
+       int ret;
+
+       /*
+        * do a partial walk of MADT to determine how many CPUs
+        * we have including offline CPUs
+        */
+       if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
+               printk(KERN_ERR PREFIX "Can't find MADT\n");
+               return 0;
+       }
+
+       ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC,
+               acpi_parse_lsapic, NR_CPUS);
+       if (ret < 1)
+               printk(KERN_ERR PREFIX
+                      "Error parsing MADT - no LAPIC entries\n");
+
+       return 0;
+}
+
+
+
 int __init acpi_boot_init(void)
 {
 
@@ -679,11 +725,6 @@ int __init acpi_boot_init(void)
                printk(KERN_ERR PREFIX
                       "Error parsing LAPIC address override entry\n");
 
-       if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, acpi_parse_lsapic, NR_CPUS)
-           < 1)
-               printk(KERN_ERR PREFIX
-                      "Error parsing MADT - no LAPIC entries\n");
-
        if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0)
            < 0)
                printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");