diff options
Diffstat (limited to 'arch/ia64/kernel/acpi.c')
| -rw-r--r-- | arch/ia64/kernel/acpi.c | 51 |
1 files changed, 46 insertions, 5 deletions
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c index 5d1eb7ee2bf..bd7acc71e8a 100644 --- 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"); |