blob: 1e939300fa0ed3ea4f66f806e31d7c9db5679e41 [file] [log] [blame]
/*
* 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-kouchi@cq.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/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/mm.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>
#define PREFIX "ACPI: "
asm (".weak iosapic_register_intr");
asm (".weak iosapic_override_isa_irq");
asm (".weak iosapic_register_platform_intr");
asm (".weak iosapic_init");
asm (".weak iosapic_system_init");
asm (".weak iosapic_version");
void (*pm_idle) (void);
void (*pm_power_off) (void);
unsigned char acpi_kbd_controller_present = 1;
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 "hp";
}
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 "hp";
# 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
struct acpi_vendor_descriptor {
u8 guid_id;
efi_guid_t guid;
};
struct acpi_vendor_info {
struct acpi_vendor_descriptor *descriptor;
u8 *data;
u32 length;
};
acpi_status
acpi_vendor_resource_match (struct acpi_resource *resource, void *context)
{
struct acpi_vendor_info *info = (struct acpi_vendor_info *) context;
struct acpi_resource_vendor *vendor;
struct acpi_vendor_descriptor *descriptor;
u32 length;
if (resource->id != ACPI_RSTYPE_VENDOR)
return AE_OK;
vendor = (struct acpi_resource_vendor *) &resource->data;
descriptor = (struct acpi_vendor_descriptor *) vendor->reserved;
if (vendor->length <= sizeof(*info->descriptor) ||
descriptor->guid_id != info->descriptor->guid_id ||
efi_guidcmp(descriptor->guid, info->descriptor->guid))
return AE_OK;
length = vendor->length - sizeof(struct acpi_vendor_descriptor);
info->data = acpi_os_allocate(length);
if (!info->data)
return AE_NO_MEMORY;
memcpy(info->data, vendor->reserved + sizeof(struct acpi_vendor_descriptor), length);
info->length = length;
return AE_CTRL_TERMINATE;
}
acpi_status
acpi_find_vendor_resource (acpi_handle obj, struct acpi_vendor_descriptor *id,
u8 **data, u32 *length)
{
struct acpi_vendor_info info;
info.descriptor = id;
info.data = 0;
acpi_walk_resources(obj, METHOD_NAME__CRS, acpi_vendor_resource_match, &info);
if (!info.data)
return AE_NOT_FOUND;
*data = info.data;
*length = info.length;
return AE_OK;
}
struct acpi_vendor_descriptor hp_ccsr_descriptor = {
.guid_id = 2,
.guid = EFI_GUID(0x69e9adf9, 0x924f, 0xab5f, 0xf6, 0x4a, 0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad)
};
acpi_status
acpi_hp_csr_space (acpi_handle obj, u64 *csr_base, u64 *csr_length)
{
acpi_status status;
u8 *data;
u32 length;
status = acpi_find_vendor_resource(obj, &hp_ccsr_descriptor, &data, &length);
if (ACPI_FAILURE(status) || length != 16)
return AE_NOT_FOUND;
memcpy(csr_base, data, sizeof(*csr_base));
memcpy(csr_length, data + 8, sizeof(*csr_length));
acpi_os_free(data);
return AE_OK;
}
#endif /* CONFIG_ACPI */
#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 if (available_cpus >= NR_CPUS)
printk(" ignored (increase NR_CPUS)");
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);
if (iosapic_init)
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);
if (!iosapic_register_platform_intr) {
printk(KERN_WARNING PREFIX "No ACPI platform interrupt support\n");
return -ENODEV;
}
/*
* 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);
/* Ignore if the platform doesn't support overrides */
if (!iosapic_override_isa_irq)
return 0;
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;
}
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
if (iosapic_system_init)
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);
return 0;
}
#ifdef CONFIG_ACPI_NUMA
#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[NR_NODES];
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_INFO 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, hole_size, min_hole_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;
if (num_memblks >= NR_MEMBLKS) {
printk(KERN_ERR "Too many mem chunks in SRAT. Ignoring %ld MBytes at %lx\n",
size/(1024*1024), paddr);
return;
}
/* Ignore disabled entries */
if (!ma->flags.enabled)
return;
/*
* When the chunk is not the first one in the node, check distance
* from the other chunks. When the hole is too huge ignore the chunk.
* This restriction should be removed when multiple chunks per node
* is supported.
*/
pend = &node_memblk[num_memblks];
min_hole_size = 0;
for (p = &node_memblk[0]; p < pend; p++) {
if (p->nid != pxm)
continue;
if (p->start_paddr < paddr)
hole_size = paddr - (p->start_paddr + p->size);
else
hole_size = p->start_paddr - (paddr + size);
if (!min_hole_size || hole_size < min_hole_size)
min_hole_size = hole_size;
}
#if 0 /* test */
if (min_hole_size) {
if (min_hole_size > size) {
printk(KERN_ERR "Too huge memory hole. Ignoring %ld MBytes at %lx\n",
size/(1024*1024), paddr);
return;
}
}
#endif
/* record this node in proximity bitmap */
pxm_bit_set(pxm);
/* Insertion sort based on base address */
pend = &node_memblk[num_memblks];
for (p = &node_memblk[0]; p < pend; p++) {
if (paddr < p->start_paddr)
break;
}
if (p < pend) {
for (q = pend; q >= p; q--)
*(q + 1) = *q;
}
p->start_paddr = paddr;
p->size = size;
p->nid = pxm;
num_memblks++;
}
void __init
acpi_numa_arch_fixup(void)
{
int i, j, node_from, node_to;
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;
nid_to_pxm_map[numnodes++] = i;
}
}
/* set logical node id in memory chunk structure */
for (i = 0; i < num_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_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_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(KERN_DEBUG "ACPI 2.0 SLIT locality table:\n");
for (i = 0; i < numnodes; i++) {
for (j = 0; j < numnodes; j++)
printk(KERN_DEBUG "%03d ", node_distance(i,j));
printk("\n");
}
#endif
}
#endif /* CONFIG_ACPI_NUMA */
static int __init
acpi_parse_fadt (unsigned long phys_addr, unsigned long size)
{
struct acpi_table_header *fadt_header;
struct fadt_descriptor_rev2 *fadt;
u32 sci_irq;
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;
sci_irq = fadt->sci_int;
if (has_8259 && sci_irq < 16)
return 0; /* legacy, no setup required */
if (!iosapic_register_intr)
return -ENODEV;
iosapic_register_intr(sci_irq, IOSAPIC_POL_LOW, IOSAPIC_LEVEL);
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)
printk(KERN_ERR PREFIX "Error parsing LAPIC address override entry\n");
if (acpi_table_parse_madt(ACPI_MADT_LSAPIC, acpi_parse_lsapic) < 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)
printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
/* I/O APIC */
if (acpi_table_parse_madt(ACPI_MADT_IOSAPIC, acpi_parse_iosapic) < 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) < 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)
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)
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_NUMA
/* If the platform did not have an SRAT table, initialize the
* node_cpuid table from the smp_boot_data array. All cpus
* will be on node 0.
*/
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;
}
/*
* PCI Interrupt Routing
*/
#ifdef CONFIG_PCI
int __init
acpi_get_prt (struct pci_vector_struct **vectors, int *count)
{
struct pci_vector_struct *vector;
struct list_head *node;
struct acpi_prt_entry *entry;
int i = 0;
if (!vectors || !count)
return -EINVAL;
*vectors = NULL;
*count = 0;
if (acpi_prt.count < 0) {
printk(KERN_ERR PREFIX "No PCI interrupt routing entries\n");
return -ENODEV;
}
/* Allocate vectors */
*vectors = kmalloc(sizeof(struct pci_vector_struct) * acpi_prt.count, GFP_KERNEL);
if (!(*vectors))
return -ENOMEM;
/* Convert PRT entries to IOSAPIC PCI vectors */
vector = *vectors;
list_for_each(node, &acpi_prt.entries) {
entry = (struct acpi_prt_entry *)node;
vector[i].segment = entry->id.segment;
vector[i].bus = entry->id.bus;
vector[i].pci_id = ((u32) entry->id.device << 16) | 0xffff;
vector[i].pin = entry->pin;
vector[i].irq = entry->link.index;
i++;
}
*count = acpi_prt.count;
return 0;
}
#endif /* CONFIG_PCI */
/* Assume IA64 always use I/O SAPIC */
int __init
acpi_get_interrupt_model (int *type)
{
if (!type)
return -EINVAL;
*type = ACPI_IRQ_MODEL_IOSAPIC;
return 0;
}
int
acpi_irq_to_vector (u32 irq)
{
if (has_8259 && irq < 16)
return isa_irq_to_vector(irq);
return gsi_to_vector(irq);
}
int
acpi_register_irq (u32 gsi, u32 polarity, u32 trigger)
{
int vector = 0;
if (has_8259 && gsi < 16)
return isa_irq_to_vector(gsi);
if (!iosapic_register_intr)
return 0;
/* Turn it on */
vector = iosapic_register_intr(gsi,
(polarity == ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW,
(trigger == ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : IOSAPIC_LEVEL);
return vector;
}
#endif /* CONFIG_ACPI_BOOT */