/*
* 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 <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 PREFIX "ACPI: "
void (*pm_idle) (void);
EXPORT_SYMBOL(pm_idle);
void (*pm_power_off) (void);
unsigned char acpi_kbd_controller_present = 1;
unsigned char acpi_legacy_devices;
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_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)
{
struct acpi_table_lapic_addr_ovr *lapic;
lapic = (struct acpi_table_lapic_addr_ovr *) header;
if (!lapic)
return -EINVAL;
acpi_table_print_madt_entry(header);
if (lapic->address) {
iounmap((void *) ipi_base_addr);
ipi_base_addr = (unsigned long) ioremap(lapic->address, 0);
}
return 0;
}
static int __init
acpi_parse_lsapic (acpi_table_entry_header *header)
{
struct acpi_table_lsapic *lsapic;
lsapic = (struct acpi_table_lsapic *) header;
if (!lsapic)
return -EINVAL;
acpi_table_print_madt_entry(header);
printk(KERN_INFO "CPU %d (0x%04x)", total_cpus, (lsapic->id << 8) | lsapic->eid);
if (!lsapic->flags.enabled)
printk(" disabled");
else {
printk(" enabled");
#ifdef CONFIG_SMP
smp_boot_data.cpu_phys_id[available_cpus] = (lsapic->id << 8) | lsapic->eid;
if (hard_smp_processor_id()
== (unsigned int) smp_boot_data.cpu_phys_id[available_cpus])
printk(" (BSP)");
#endif
++available_cpus;
}
printk("\n");
total_cpus++;
return 0;
}
static int __init
acpi_parse_lapic_nmi (acpi_table_entry_header *header)
{
struct acpi_table_lapic_nmi *lacpi_nmi;
lacpi_nmi = (struct acpi_table_lapic_nmi*) header;
if (!lacpi_nmi)
return -EINVAL;
acpi_table_print_madt_entry(header);
/* TBD: Support lapic_nmi entries */
return 0;
}
static int __init
acpi_parse_iosapic (acpi_table_entry_header *header)
{
struct acpi_table_iosapic *iosapic;
iosapic = (struct acpi_table_iosapic *) header;
if (!iosapic)
return -EINVAL;
acpi_table_print_madt_entry(header);
iosapic_init(iosapic->address, iosapic->global_irq_base);
return 0;
}
static int __init
acpi_parse_plat_int_src (acpi_table_entry_header *header)
{
struct acpi_table_plat_int_src *plintsrc;
int vector;
plintsrc = (struct acpi_table_plat_int_src *) header;
if (!plintsrc)
return -EINVAL;
acpi_table_print_madt_entry(header);
/*
* 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)
{
struct acpi_table_int_src_ovr *p;
p = (struct acpi_table_int_src_ovr *) header;
if (!p)
return -EINVAL;
acpi_table_print_madt_entry(header);
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)
{
struct acpi_table_nmi_src *nmi_src;
nmi_src = (struct acpi_table_nmi_src*) header;
if (!nmi_src)
return -EINVAL;
acpi_table_print_madt_entry(header);
/* TBD: Support nimsrc entries */
return 0;
}
/* Hook from generic ACPI tables.c */
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))){
/* Unfortunatly 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;
/*Start cyclone clock*/
cyclone_setup(0);
}
}
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 = (unsigned long) ioremap(acpi_madt->lapic_address, 0);
printk(KERN_INFO PREFIX "Local APIC address 0x%lx\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 __initdata 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 __initdata 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 */
if (srat_num_cpus == 0) {
node_cpuid[0].phys_id = hard_smp_processor_id();
return;
}
/* calculate total number of nodes in system from PXM bitmap */
numnodes = 0; /* init total nodes in system */
memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map));
memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map));
for (i = 0; i < MAX_PXM_DOMAINS; i++) {
if (pxm_bit_test(i)) {
pxm_to_nid_map[i] = numnodes;
node_set_online(numnodes);
nid_to_pxm_map[numnodes++] = i;
}
}
/* 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 (i = 0; i < numnodes; 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", numnodes);
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 (i = 0; i < numnodes; i++) {
for (j = 0; j < numnodes; j++)
printk("%03d ", node_distance(i,j));
printk("\n");
}
#endif
}
#endif /* CONFIG_ACPI_NUMA */
unsigned int
acpi_register_gsi (u32 gsi, int polarity, int trigger)
{
return acpi_register_irq(gsi, polarity, trigger);
}
EXPORT_SYMBOL(acpi_register_gsi);
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_ACTIVE_LOW, ACPI_LEVEL_SENSITIVE);
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;
}
/* deprecated in favor of acpi_gsi_to_irq */
int
acpi_irq_to_vector (u32 gsi)
{
if (has_8259 && gsi < 16)
return isa_irq_to_vector(gsi);
return gsi_to_vector(gsi);
}
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;
}
int
acpi_register_irq (u32 gsi, u32 polarity, u32 trigger)
{
if (has_8259 && gsi < 16)
return isa_irq_to_vector(gsi);
return iosapic_register_intr(gsi,
(polarity == ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
(trigger == ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
}
EXPORT_SYMBOL(acpi_register_irq);
#endif /* CONFIG_ACPI_BOOT */
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