summaryrefslogtreecommitdiff
path: root/arch/ia64/kernel/acpi.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ia64/kernel/acpi.c
downloadconfigs-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/ia64/kernel/acpi.c')
-rw-r--r--arch/ia64/kernel/acpi.c841
1 files changed, 841 insertions, 0 deletions
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
new file mode 100644
index 00000000000..a8e99c56a76
--- /dev/null
+++ b/arch/ia64/kernel/acpi.c
@@ -0,0 +1,841 @@
+/*
+ * acpi.c - Architecture-Specific Low-Level ACPI Support
+ *
+ * Copyright (C) 1999 VA Linux Systems
+ * Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com>
+ * Copyright (C) 2000, 2002-2003 Hewlett-Packard Co.
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 2000 Intel Corp.
+ * Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com>
+ * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ * Copyright (C) 2001 Jenna Hall <jenna.s.hall@intel.com>
+ * Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com>
+ * Copyright (C) 2002 Erich Focht <efocht@ess.nec.de>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/irq.h>
+#include <linux/acpi.h>
+#include <linux/efi.h>
+#include <linux/mmzone.h>
+#include <linux/nodemask.h>
+#include <asm/io.h>
+#include <asm/iosapic.h>
+#include <asm/machvec.h>
+#include <asm/page.h>
+#include <asm/system.h>
+#include <asm/numa.h>
+#include <asm/sal.h>
+#include <asm/cyclone.h>
+
+#define BAD_MADT_ENTRY(entry, end) ( \
+ (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
+ ((acpi_table_entry_header *)entry)->length != sizeof(*entry))
+
+#define PREFIX "ACPI: "
+
+void (*pm_idle) (void);
+EXPORT_SYMBOL(pm_idle);
+void (*pm_power_off) (void);
+EXPORT_SYMBOL(pm_power_off);
+
+unsigned char acpi_kbd_controller_present = 1;
+unsigned char acpi_legacy_devices;
+
+#define MAX_SAPICS 256
+u16 ia64_acpiid_to_sapicid[MAX_SAPICS] =
+ { [0 ... MAX_SAPICS - 1] = -1 };
+EXPORT_SYMBOL(ia64_acpiid_to_sapicid);
+
+const char *
+acpi_get_sysname (void)
+{
+#ifdef CONFIG_IA64_GENERIC
+ unsigned long rsdp_phys;
+ struct acpi20_table_rsdp *rsdp;
+ struct acpi_table_xsdt *xsdt;
+ struct acpi_table_header *hdr;
+
+ rsdp_phys = acpi_find_rsdp();
+ if (!rsdp_phys) {
+ printk(KERN_ERR "ACPI 2.0 RSDP not found, default to \"dig\"\n");
+ return "dig";
+ }
+
+ rsdp = (struct acpi20_table_rsdp *) __va(rsdp_phys);
+ if (strncmp(rsdp->signature, RSDP_SIG, sizeof(RSDP_SIG) - 1)) {
+ printk(KERN_ERR "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n");
+ return "dig";
+ }
+
+ xsdt = (struct acpi_table_xsdt *) __va(rsdp->xsdt_address);
+ hdr = &xsdt->header;
+ if (strncmp(hdr->signature, XSDT_SIG, sizeof(XSDT_SIG) - 1)) {
+ printk(KERN_ERR "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n");
+ return "dig";
+ }
+
+ if (!strcmp(hdr->oem_id, "HP")) {
+ return "hpzx1";
+ }
+ else if (!strcmp(hdr->oem_id, "SGI")) {
+ return "sn2";
+ }
+
+ return "dig";
+#else
+# if defined (CONFIG_IA64_HP_SIM)
+ return "hpsim";
+# elif defined (CONFIG_IA64_HP_ZX1)
+ return "hpzx1";
+# elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
+ return "hpzx1_swiotlb";
+# elif defined (CONFIG_IA64_SGI_SN2)
+ return "sn2";
+# elif defined (CONFIG_IA64_DIG)
+ return "dig";
+# else
+# error Unknown platform. Fix acpi.c.
+# endif
+#endif
+}
+
+#ifdef CONFIG_ACPI_BOOT
+
+#define ACPI_MAX_PLATFORM_INTERRUPTS 256
+
+/* Array to record platform interrupt vectors for generic interrupt routing. */
+int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = {
+ [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1
+};
+
+enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC;
+
+/*
+ * Interrupt routing API for device drivers. Provides interrupt vector for
+ * a generic platform event. Currently only CPEI is implemented.
+ */
+int
+acpi_request_vector (u32 int_type)
+{
+ int vector = -1;
+
+ if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) {
+ /* corrected platform error interrupt */
+ vector = platform_intr_list[int_type];
+ } else
+ printk(KERN_ERR "acpi_request_vector(): invalid interrupt type\n");
+ return vector;
+}
+
+char *
+__acpi_map_table (unsigned long phys_addr, unsigned long size)
+{
+ return __va(phys_addr);
+}
+
+/* --------------------------------------------------------------------------
+ Boot-time Table Parsing
+ -------------------------------------------------------------------------- */
+
+static int total_cpus __initdata;
+static int available_cpus __initdata;
+struct acpi_table_madt * acpi_madt __initdata;
+static u8 has_8259;
+
+
+static int __init
+acpi_parse_lapic_addr_ovr (
+ acpi_table_entry_header *header, const unsigned long end)
+{
+ struct acpi_table_lapic_addr_ovr *lapic;
+
+ lapic = (struct acpi_table_lapic_addr_ovr *) header;
+
+ if (BAD_MADT_ENTRY(lapic, end))
+ return -EINVAL;
+
+ if (lapic->address) {
+ iounmap(ipi_base_addr);
+ ipi_base_addr = ioremap(lapic->address, 0);
+ }
+ return 0;
+}
+
+
+static int __init
+acpi_parse_lsapic (acpi_table_entry_header *header, const unsigned long end)
+{
+ struct acpi_table_lsapic *lsapic;
+
+ lsapic = (struct acpi_table_lsapic *) header;
+
+ if (BAD_MADT_ENTRY(lsapic, end))
+ return -EINVAL;
+
+ if (lsapic->flags.enabled) {
+#ifdef CONFIG_SMP
+ smp_boot_data.cpu_phys_id[available_cpus] = (lsapic->id << 8) | lsapic->eid;
+#endif
+ ia64_acpiid_to_sapicid[lsapic->acpi_id] = (lsapic->id << 8) | lsapic->eid;
+ ++available_cpus;
+ }
+
+ total_cpus++;
+ return 0;
+}
+
+
+static int __init
+acpi_parse_lapic_nmi (acpi_table_entry_header *header, const unsigned long end)
+{
+ struct acpi_table_lapic_nmi *lacpi_nmi;
+
+ lacpi_nmi = (struct acpi_table_lapic_nmi*) header;
+
+ if (BAD_MADT_ENTRY(lacpi_nmi, end))
+ return -EINVAL;
+
+ /* TBD: Support lapic_nmi entries */
+ return 0;
+}
+
+
+static int __init
+acpi_parse_iosapic (acpi_table_entry_header *header, const unsigned long end)
+{
+ struct acpi_table_iosapic *iosapic;
+
+ iosapic = (struct acpi_table_iosapic *) header;
+
+ if (BAD_MADT_ENTRY(iosapic, end))
+ return -EINVAL;
+
+ iosapic_init(iosapic->address, iosapic->global_irq_base);
+
+ return 0;
+}
+
+
+static int __init
+acpi_parse_plat_int_src (
+ acpi_table_entry_header *header, const unsigned long end)
+{
+ struct acpi_table_plat_int_src *plintsrc;
+ int vector;
+
+ plintsrc = (struct acpi_table_plat_int_src *) header;
+
+ if (BAD_MADT_ENTRY(plintsrc, end))
+ return -EINVAL;
+
+ /*
+ * Get vector assignment for this interrupt, set attributes,
+ * and program the IOSAPIC routing table.
+ */
+ vector = iosapic_register_platform_intr(plintsrc->type,
+ plintsrc->global_irq,
+ plintsrc->iosapic_vector,
+ plintsrc->eid,
+ plintsrc->id,
+ (plintsrc->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
+ (plintsrc->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
+
+ platform_intr_list[plintsrc->type] = vector;
+ return 0;
+}
+
+
+static int __init
+acpi_parse_int_src_ovr (
+ acpi_table_entry_header *header, const unsigned long end)
+{
+ struct acpi_table_int_src_ovr *p;
+
+ p = (struct acpi_table_int_src_ovr *) header;
+
+ if (BAD_MADT_ENTRY(p, end))
+ return -EINVAL;
+
+ iosapic_override_isa_irq(p->bus_irq, p->global_irq,
+ (p->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
+ (p->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
+ return 0;
+}
+
+
+static int __init
+acpi_parse_nmi_src (acpi_table_entry_header *header, const unsigned long end)
+{
+ struct acpi_table_nmi_src *nmi_src;
+
+ nmi_src = (struct acpi_table_nmi_src*) header;
+
+ if (BAD_MADT_ENTRY(nmi_src, end))
+ return -EINVAL;
+
+ /* TBD: Support nimsrc entries */
+ return 0;
+}
+
+static void __init
+acpi_madt_oem_check (char *oem_id, char *oem_table_id)
+{
+ if (!strncmp(oem_id, "IBM", 3) &&
+ (!strncmp(oem_table_id, "SERMOW", 6))) {
+
+ /*
+ * Unfortunately ITC_DRIFT is not yet part of the
+ * official SAL spec, so the ITC_DRIFT bit is not
+ * set by the BIOS on this hardware.
+ */
+ sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT;
+
+ cyclone_setup();
+ }
+}
+
+static int __init
+acpi_parse_madt (unsigned long phys_addr, unsigned long size)
+{
+ if (!phys_addr || !size)
+ return -EINVAL;
+
+ acpi_madt = (struct acpi_table_madt *) __va(phys_addr);
+
+ /* remember the value for reference after free_initmem() */
+#ifdef CONFIG_ITANIUM
+ has_8259 = 1; /* Firmware on old Itanium systems is broken */
+#else
+ has_8259 = acpi_madt->flags.pcat_compat;
+#endif
+ iosapic_system_init(has_8259);
+
+ /* Get base address of IPI Message Block */
+
+ if (acpi_madt->lapic_address)
+ ipi_base_addr = ioremap(acpi_madt->lapic_address, 0);
+
+ printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr);
+
+ acpi_madt_oem_check(acpi_madt->header.oem_id,
+ acpi_madt->header.oem_table_id);
+
+ return 0;
+}
+
+
+#ifdef CONFIG_ACPI_NUMA
+
+#undef SLIT_DEBUG
+
+#define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32)
+
+static int __initdata srat_num_cpus; /* number of cpus */
+static u32 __devinitdata pxm_flag[PXM_FLAG_LEN];
+#define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag))
+#define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag))
+/* maps to convert between proximity domain and logical node ID */
+int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS];
+int __initdata nid_to_pxm_map[MAX_NUMNODES];
+static struct acpi_table_slit __initdata *slit_table;
+
+/*
+ * ACPI 2.0 SLIT (System Locality Information Table)
+ * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
+ */
+void __init
+acpi_numa_slit_init (struct acpi_table_slit *slit)
+{
+ u32 len;
+
+ len = sizeof(struct acpi_table_header) + 8
+ + slit->localities * slit->localities;
+ if (slit->header.length != len) {
+ printk(KERN_ERR "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n",
+ len, slit->header.length);
+ memset(numa_slit, 10, sizeof(numa_slit));
+ return;
+ }
+ slit_table = slit;
+}
+
+void __init
+acpi_numa_processor_affinity_init (struct acpi_table_processor_affinity *pa)
+{
+ /* record this node in proximity bitmap */
+ pxm_bit_set(pa->proximity_domain);
+
+ node_cpuid[srat_num_cpus].phys_id = (pa->apic_id << 8) | (pa->lsapic_eid);
+ /* nid should be overridden as logical node id later */
+ node_cpuid[srat_num_cpus].nid = pa->proximity_domain;
+ srat_num_cpus++;
+}
+
+void __init
+acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma)
+{
+ unsigned long paddr, size;
+ u8 pxm;
+ struct node_memblk_s *p, *q, *pend;
+
+ pxm = ma->proximity_domain;
+
+ /* fill node memory chunk structure */
+ paddr = ma->base_addr_hi;
+ paddr = (paddr << 32) | ma->base_addr_lo;
+ size = ma->length_hi;
+ size = (size << 32) | ma->length_lo;
+
+ /* Ignore disabled entries */
+ if (!ma->flags.enabled)
+ return;
+
+ /* record this node in proximity bitmap */
+ pxm_bit_set(pxm);
+
+ /* Insertion sort based on base address */
+ pend = &node_memblk[num_node_memblks];
+ for (p = &node_memblk[0]; p < pend; p++) {
+ if (paddr < p->start_paddr)
+ break;
+ }
+ if (p < pend) {
+ for (q = pend - 1; q >= p; q--)
+ *(q + 1) = *q;
+ }
+ p->start_paddr = paddr;
+ p->size = size;
+ p->nid = pxm;
+ num_node_memblks++;
+}
+
+void __init
+acpi_numa_arch_fixup (void)
+{
+ int i, j, node_from, node_to;
+
+ /* If there's no SRAT, fix the phys_id and mark node 0 online */
+ if (srat_num_cpus == 0) {
+ node_set_online(0);
+ node_cpuid[0].phys_id = hard_smp_processor_id();
+ return;
+ }
+
+ /*
+ * MCD - This can probably be dropped now. No need for pxm ID to node ID
+ * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES.
+ */
+ /* calculate total number of nodes in system from PXM bitmap */
+ memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map));
+ memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map));
+ nodes_clear(node_online_map);
+ for (i = 0; i < MAX_PXM_DOMAINS; i++) {
+ if (pxm_bit_test(i)) {
+ int nid = num_online_nodes();
+ pxm_to_nid_map[i] = nid;
+ nid_to_pxm_map[nid] = i;
+ node_set_online(nid);
+ }
+ }
+
+ /* set logical node id in memory chunk structure */
+ for (i = 0; i < num_node_memblks; i++)
+ node_memblk[i].nid = pxm_to_nid_map[node_memblk[i].nid];
+
+ /* assign memory bank numbers for each chunk on each node */
+ for_each_online_node(i) {
+ int bank;
+
+ bank = 0;
+ for (j = 0; j < num_node_memblks; j++)
+ if (node_memblk[j].nid == i)
+ node_memblk[j].bank = bank++;
+ }
+
+ /* set logical node id in cpu structure */
+ for (i = 0; i < srat_num_cpus; i++)
+ node_cpuid[i].nid = pxm_to_nid_map[node_cpuid[i].nid];
+
+ printk(KERN_INFO "Number of logical nodes in system = %d\n", num_online_nodes());
+ printk(KERN_INFO "Number of memory chunks in system = %d\n", num_node_memblks);
+
+ if (!slit_table) return;
+ memset(numa_slit, -1, sizeof(numa_slit));
+ for (i=0; i<slit_table->localities; i++) {
+ if (!pxm_bit_test(i))
+ continue;
+ node_from = pxm_to_nid_map[i];
+ for (j=0; j<slit_table->localities; j++) {
+ if (!pxm_bit_test(j))
+ continue;
+ node_to = pxm_to_nid_map[j];
+ node_distance(node_from, node_to) =
+ slit_table->entry[i*slit_table->localities + j];
+ }
+ }
+
+#ifdef SLIT_DEBUG
+ printk("ACPI 2.0 SLIT locality table:\n");
+ for_each_online_node(i) {
+ for_each_online_node(j)
+ printk("%03d ", node_distance(i,j));
+ printk("\n");
+ }
+#endif
+}
+#endif /* CONFIG_ACPI_NUMA */
+
+unsigned int
+acpi_register_gsi (u32 gsi, int edge_level, int active_high_low)
+{
+ if (has_8259 && gsi < 16)
+ return isa_irq_to_vector(gsi);
+
+ return iosapic_register_intr(gsi,
+ (active_high_low == ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
+ (edge_level == ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
+}
+EXPORT_SYMBOL(acpi_register_gsi);
+
+#ifdef CONFIG_ACPI_DEALLOCATE_IRQ
+void
+acpi_unregister_gsi (u32 gsi)
+{
+ iosapic_unregister_intr(gsi);
+}
+EXPORT_SYMBOL(acpi_unregister_gsi);
+#endif /* CONFIG_ACPI_DEALLOCATE_IRQ */
+
+static int __init
+acpi_parse_fadt (unsigned long phys_addr, unsigned long size)
+{
+ struct acpi_table_header *fadt_header;
+ struct fadt_descriptor_rev2 *fadt;
+
+ if (!phys_addr || !size)
+ return -EINVAL;
+
+ fadt_header = (struct acpi_table_header *) __va(phys_addr);
+ if (fadt_header->revision != 3)
+ return -ENODEV; /* Only deal with ACPI 2.0 FADT */
+
+ fadt = (struct fadt_descriptor_rev2 *) fadt_header;
+
+ if (!(fadt->iapc_boot_arch & BAF_8042_KEYBOARD_CONTROLLER))
+ acpi_kbd_controller_present = 0;
+
+ if (fadt->iapc_boot_arch & BAF_LEGACY_DEVICES)
+ acpi_legacy_devices = 1;
+
+ acpi_register_gsi(fadt->sci_int, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW);
+ return 0;
+}
+
+
+unsigned long __init
+acpi_find_rsdp (void)
+{
+ unsigned long rsdp_phys = 0;
+
+ if (efi.acpi20)
+ rsdp_phys = __pa(efi.acpi20);
+ else if (efi.acpi)
+ printk(KERN_WARNING PREFIX "v1.0/r0.71 tables no longer supported\n");
+ return rsdp_phys;
+}
+
+
+int __init
+acpi_boot_init (void)
+{
+
+ /*
+ * MADT
+ * ----
+ * Parse the Multiple APIC Description Table (MADT), if exists.
+ * Note that this table provides platform SMP configuration
+ * information -- the successor to MPS tables.
+ */
+
+ if (acpi_table_parse(ACPI_APIC, acpi_parse_madt) < 1) {
+ printk(KERN_ERR PREFIX "Can't find MADT\n");
+ goto skip_madt;
+ }
+
+ /* Local APIC */
+
+ if (acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR, acpi_parse_lapic_addr_ovr, 0) < 0)
+ printk(KERN_ERR PREFIX "Error parsing LAPIC address override entry\n");
+
+ if (acpi_table_parse_madt(ACPI_MADT_LSAPIC, acpi_parse_lsapic, NR_CPUS) < 1)
+ printk(KERN_ERR PREFIX "Error parsing MADT - no LAPIC entries\n");
+
+ if (acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0) < 0)
+ printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
+
+ /* I/O APIC */
+
+ if (acpi_table_parse_madt(ACPI_MADT_IOSAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1)
+ printk(KERN_ERR PREFIX "Error parsing MADT - no IOSAPIC entries\n");
+
+ /* System-Level Interrupt Routing */
+
+ if (acpi_table_parse_madt(ACPI_MADT_PLAT_INT_SRC, acpi_parse_plat_int_src, ACPI_MAX_PLATFORM_INTERRUPTS) < 0)
+ printk(KERN_ERR PREFIX "Error parsing platform interrupt source entry\n");
+
+ if (acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr, 0) < 0)
+ printk(KERN_ERR PREFIX "Error parsing interrupt source overrides entry\n");
+
+ if (acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src, 0) < 0)
+ printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
+ skip_madt:
+
+ /*
+ * FADT says whether a legacy keyboard controller is present.
+ * The FADT also contains an SCI_INT line, by which the system
+ * gets interrupts such as power and sleep buttons. If it's not
+ * on a Legacy interrupt, it needs to be setup.
+ */
+ if (acpi_table_parse(ACPI_FADT, acpi_parse_fadt) < 1)
+ printk(KERN_ERR PREFIX "Can't find FADT\n");
+
+#ifdef CONFIG_SMP
+ if (available_cpus == 0) {
+ printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n");
+ printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id());
+ smp_boot_data.cpu_phys_id[available_cpus] = hard_smp_processor_id();
+ available_cpus = 1; /* We've got at least one of these, no? */
+ }
+ smp_boot_data.cpu_count = available_cpus;
+
+ smp_build_cpu_map();
+# ifdef CONFIG_ACPI_NUMA
+ if (srat_num_cpus == 0) {
+ int cpu, i = 1;
+ for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++)
+ if (smp_boot_data.cpu_phys_id[cpu] != hard_smp_processor_id())
+ node_cpuid[i++].phys_id = smp_boot_data.cpu_phys_id[cpu];
+ }
+ build_cpu_to_node_map();
+# endif
+#endif
+ /* Make boot-up look pretty */
+ printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, total_cpus);
+ return 0;
+}
+
+int
+acpi_gsi_to_irq (u32 gsi, unsigned int *irq)
+{
+ int vector;
+
+ if (has_8259 && gsi < 16)
+ *irq = isa_irq_to_vector(gsi);
+ else {
+ vector = gsi_to_vector(gsi);
+ if (vector == -1)
+ return -1;
+
+ *irq = vector;
+ }
+ return 0;
+}
+
+/*
+ * ACPI based hotplug CPU support
+ */
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+static
+int
+acpi_map_cpu2node(acpi_handle handle, int cpu, long physid)
+{
+#ifdef CONFIG_ACPI_NUMA
+ int pxm_id;
+
+ pxm_id = acpi_get_pxm(handle);
+
+ /*
+ * Assuming that the container driver would have set the proximity
+ * domain and would have initialized pxm_to_nid_map[pxm_id] && pxm_flag
+ */
+ node_cpuid[cpu].nid = (pxm_id < 0) ? 0:
+ pxm_to_nid_map[pxm_id];
+
+ node_cpuid[cpu].phys_id = physid;
+#endif
+ return(0);
+}
+
+
+int
+acpi_map_lsapic(acpi_handle handle, int *pcpu)
+{
+ struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+ union acpi_object *obj;
+ struct acpi_table_lsapic *lsapic;
+ cpumask_t tmp_map;
+ long physid;
+ int cpu;
+
+ if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
+ return -EINVAL;
+
+ if (!buffer.length || !buffer.pointer)
+ return -EINVAL;
+
+ obj = buffer.pointer;
+ if (obj->type != ACPI_TYPE_BUFFER ||
+ obj->buffer.length < sizeof(*lsapic)) {
+ acpi_os_free(buffer.pointer);
+ return -EINVAL;
+ }
+
+ lsapic = (struct acpi_table_lsapic *)obj->buffer.pointer;
+
+ if ((lsapic->header.type != ACPI_MADT_LSAPIC) ||
+ (!lsapic->flags.enabled)) {
+ acpi_os_free(buffer.pointer);
+ return -EINVAL;
+ }
+
+ physid = ((lsapic->id <<8) | (lsapic->eid));
+
+ acpi_os_free(buffer.pointer);
+ buffer.length = ACPI_ALLOCATE_BUFFER;
+ buffer.pointer = NULL;
+
+ cpus_complement(tmp_map, cpu_present_map);
+ cpu = first_cpu(tmp_map);
+ if(cpu >= NR_CPUS)
+ return -EINVAL;
+
+ acpi_map_cpu2node(handle, cpu, physid);
+
+ cpu_set(cpu, cpu_present_map);
+ ia64_cpu_to_sapicid[cpu] = physid;
+ ia64_acpiid_to_sapicid[lsapic->acpi_id] = ia64_cpu_to_sapicid[cpu];
+
+ *pcpu = cpu;
+ return(0);
+}
+EXPORT_SYMBOL(acpi_map_lsapic);
+
+
+int
+acpi_unmap_lsapic(int cpu)
+{
+ int i;
+
+ for (i=0; i<MAX_SAPICS; i++) {
+ if (ia64_acpiid_to_sapicid[i] == ia64_cpu_to_sapicid[cpu]) {
+ ia64_acpiid_to_sapicid[i] = -1;
+ break;
+ }
+ }
+ ia64_cpu_to_sapicid[cpu] = -1;
+ cpu_clear(cpu,cpu_present_map);
+
+#ifdef CONFIG_ACPI_NUMA
+ /* NUMA specific cleanup's */
+#endif
+
+ return(0);
+}
+EXPORT_SYMBOL(acpi_unmap_lsapic);
+#endif /* CONFIG_ACPI_HOTPLUG_CPU */
+
+
+#ifdef CONFIG_ACPI_NUMA
+acpi_status __init
+acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret)
+{
+ struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+ union acpi_object *obj;
+ struct acpi_table_iosapic *iosapic;
+ unsigned int gsi_base;
+ int node;
+
+ /* Only care about objects w/ a method that returns the MADT */
+ if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
+ return AE_OK;
+
+ if (!buffer.length || !buffer.pointer)
+ return AE_OK;
+
+ obj = buffer.pointer;
+ if (obj->type != ACPI_TYPE_BUFFER ||
+ obj->buffer.length < sizeof(*iosapic)) {
+ acpi_os_free(buffer.pointer);
+ return AE_OK;
+ }
+
+ iosapic = (struct acpi_table_iosapic *)obj->buffer.pointer;
+
+ if (iosapic->header.type != ACPI_MADT_IOSAPIC) {
+ acpi_os_free(buffer.pointer);
+ return AE_OK;
+ }
+
+ gsi_base = iosapic->global_irq_base;
+
+ acpi_os_free(buffer.pointer);
+ buffer.length = ACPI_ALLOCATE_BUFFER;
+ buffer.pointer = NULL;
+
+ /*
+ * OK, it's an IOSAPIC MADT entry, look for a _PXM method to tell
+ * us which node to associate this with.
+ */
+ if (ACPI_FAILURE(acpi_evaluate_object(handle, "_PXM", NULL, &buffer)))
+ return AE_OK;
+
+ if (!buffer.length || !buffer.pointer)
+ return AE_OK;
+
+ obj = buffer.pointer;
+
+ if (obj->type != ACPI_TYPE_INTEGER ||
+ obj->integer.value >= MAX_PXM_DOMAINS) {
+ acpi_os_free(buffer.pointer);
+ return AE_OK;
+ }
+
+ node = pxm_to_nid_map[obj->integer.value];
+ acpi_os_free(buffer.pointer);
+
+ if (node >= MAX_NUMNODES || !node_online(node) ||
+ cpus_empty(node_to_cpumask(node)))
+ return AE_OK;
+
+ /* We know a gsi to node mapping! */
+ map_iosapic_to_node(gsi_base, node);
+ return AE_OK;
+}
+#endif /* CONFIG_NUMA */
+#endif /* CONFIG_ACPI_BOOT */