Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * acpi.c - Architecture-Specific Low-Level ACPI Support |
| 3 | * |
| 4 | * Copyright (C) 1999 VA Linux Systems |
| 5 | * Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com> |
| 6 | * Copyright (C) 2000, 2002-2003 Hewlett-Packard Co. |
| 7 | * David Mosberger-Tang <davidm@hpl.hp.com> |
| 8 | * Copyright (C) 2000 Intel Corp. |
| 9 | * Copyright (C) 2000,2001 J.I. Lee <jung-ik.lee@intel.com> |
| 10 | * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> |
| 11 | * Copyright (C) 2001 Jenna Hall <jenna.s.hall@intel.com> |
| 12 | * Copyright (C) 2001 Takayoshi Kochi <t-kochi@bq.jp.nec.com> |
| 13 | * Copyright (C) 2002 Erich Focht <efocht@ess.nec.de> |
Ashok Raj | 55e59c5 | 2005-03-31 22:51:10 -0500 | [diff] [blame] | 14 | * Copyright (C) 2004 Ashok Raj <ashok.raj@intel.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | * |
| 16 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 17 | * |
| 18 | * This program is free software; you can redistribute it and/or modify |
| 19 | * it under the terms of the GNU General Public License as published by |
| 20 | * the Free Software Foundation; either version 2 of the License, or |
| 21 | * (at your option) any later version. |
| 22 | * |
| 23 | * This program is distributed in the hope that it will be useful, |
| 24 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 26 | * GNU General Public License for more details. |
| 27 | * |
| 28 | * You should have received a copy of the GNU General Public License |
| 29 | * along with this program; if not, write to the Free Software |
| 30 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 31 | * |
| 32 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 33 | */ |
| 34 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <linux/module.h> |
| 36 | #include <linux/init.h> |
| 37 | #include <linux/kernel.h> |
| 38 | #include <linux/sched.h> |
| 39 | #include <linux/smp.h> |
| 40 | #include <linux/string.h> |
| 41 | #include <linux/types.h> |
| 42 | #include <linux/irq.h> |
| 43 | #include <linux/acpi.h> |
| 44 | #include <linux/efi.h> |
| 45 | #include <linux/mmzone.h> |
| 46 | #include <linux/nodemask.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 47 | #include <linux/slab.h> |
Alex Chiang | d8191fa | 2010-02-22 12:11:39 -0700 | [diff] [blame] | 48 | #include <acpi/processor.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #include <asm/io.h> |
| 50 | #include <asm/iosapic.h> |
| 51 | #include <asm/machvec.h> |
| 52 | #include <asm/page.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #include <asm/numa.h> |
| 54 | #include <asm/sal.h> |
| 55 | #include <asm/cyclone.h> |
| 56 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #define PREFIX "ACPI: " |
| 58 | |
Baoquan He | 247dba5 | 2014-05-05 12:48:25 +0800 | [diff] [blame] | 59 | int acpi_lapic; |
Ashok Raj | 55e59c5 | 2005-03-31 22:51:10 -0500 | [diff] [blame] | 60 | unsigned int acpi_cpei_override; |
| 61 | unsigned int acpi_cpei_phys_cpuid; |
| 62 | |
Len Brown | e8b2fd0 | 2007-07-24 22:26:33 -0400 | [diff] [blame] | 63 | unsigned long acpi_wakeup_address = 0; |
| 64 | |
Len Brown | 239665a | 2007-11-23 20:08:02 -0500 | [diff] [blame] | 65 | #ifdef CONFIG_IA64_GENERIC |
| 66 | static unsigned long __init acpi_find_rsdp(void) |
| 67 | { |
| 68 | unsigned long rsdp_phys = 0; |
| 69 | |
| 70 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
| 71 | rsdp_phys = efi.acpi20; |
| 72 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) |
| 73 | printk(KERN_WARNING PREFIX |
| 74 | "v1.0/r0.71 tables no longer supported\n"); |
| 75 | return rsdp_phys; |
| 76 | } |
Len Brown | 239665a | 2007-11-23 20:08:02 -0500 | [diff] [blame] | 77 | |
Tony Luck | d57c4a3 | 2007-05-24 10:59:44 -0700 | [diff] [blame] | 78 | const char __init * |
| 79 | acpi_get_sysname(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | unsigned long rsdp_phys; |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 82 | struct acpi_table_rsdp *rsdp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | struct acpi_table_xsdt *xsdt; |
| 84 | struct acpi_table_header *hdr; |
Suresh Siddha | d3f1381 | 2011-08-23 17:05:25 -0700 | [diff] [blame] | 85 | #ifdef CONFIG_INTEL_IOMMU |
Fenghua Yu | 62fdd76 | 2008-10-17 12:14:13 -0700 | [diff] [blame] | 86 | u64 i, nentries; |
| 87 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | |
| 89 | rsdp_phys = acpi_find_rsdp(); |
| 90 | if (!rsdp_phys) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 91 | printk(KERN_ERR |
| 92 | "ACPI 2.0 RSDP not found, default to \"dig\"\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | return "dig"; |
| 94 | } |
| 95 | |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 96 | rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys); |
| 97 | if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 1)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 98 | printk(KERN_ERR |
| 99 | "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | return "dig"; |
| 101 | } |
| 102 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 103 | xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | hdr = &xsdt->header; |
Alexey Starikovskiy | ad71860a | 2007-02-02 19:48:19 +0300 | [diff] [blame] | 105 | if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 106 | printk(KERN_ERR |
| 107 | "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | return "dig"; |
| 109 | } |
| 110 | |
| 111 | if (!strcmp(hdr->oem_id, "HP")) { |
| 112 | return "hpzx1"; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 113 | } else if (!strcmp(hdr->oem_id, "SGI")) { |
Jack Steiner | 2224661 | 2008-05-06 15:18:57 -0500 | [diff] [blame] | 114 | if (!strcmp(hdr->oem_table_id + 4, "UV")) |
| 115 | return "uv"; |
| 116 | else |
| 117 | return "sn2"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | } |
| 119 | |
Suresh Siddha | d3f1381 | 2011-08-23 17:05:25 -0700 | [diff] [blame] | 120 | #ifdef CONFIG_INTEL_IOMMU |
Fenghua Yu | 62fdd76 | 2008-10-17 12:14:13 -0700 | [diff] [blame] | 121 | /* Look for Intel IOMMU */ |
| 122 | nentries = (hdr->length - sizeof(*hdr)) / |
| 123 | sizeof(xsdt->table_offset_entry[0]); |
| 124 | for (i = 0; i < nentries; i++) { |
| 125 | hdr = __va(xsdt->table_offset_entry[i]); |
| 126 | if (strncmp(hdr->signature, ACPI_SIG_DMAR, |
| 127 | sizeof(ACPI_SIG_DMAR) - 1) == 0) |
| 128 | return "dig_vtd"; |
| 129 | } |
| 130 | #endif |
| 131 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | return "dig"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | } |
Alex Chiang | d868080 | 2010-02-25 14:09:52 -0700 | [diff] [blame] | 134 | #endif /* CONFIG_IA64_GENERIC */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | |
| 136 | #define ACPI_MAX_PLATFORM_INTERRUPTS 256 |
| 137 | |
| 138 | /* Array to record platform interrupt vectors for generic interrupt routing. */ |
| 139 | int platform_intr_list[ACPI_MAX_PLATFORM_INTERRUPTS] = { |
| 140 | [0 ... ACPI_MAX_PLATFORM_INTERRUPTS - 1] = -1 |
| 141 | }; |
| 142 | |
| 143 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_IOSAPIC; |
| 144 | |
| 145 | /* |
| 146 | * Interrupt routing API for device drivers. Provides interrupt vector for |
| 147 | * a generic platform event. Currently only CPEI is implemented. |
| 148 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 149 | int acpi_request_vector(u32 int_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | { |
| 151 | int vector = -1; |
| 152 | |
| 153 | if (int_type < ACPI_MAX_PLATFORM_INTERRUPTS) { |
| 154 | /* corrected platform error interrupt */ |
| 155 | vector = platform_intr_list[int_type]; |
| 156 | } else |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 157 | printk(KERN_ERR |
| 158 | "acpi_request_vector(): invalid interrupt type\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | return vector; |
| 160 | } |
| 161 | |
Jan Beulich | 2fdf074 | 2007-12-13 08:33:59 +0000 | [diff] [blame] | 162 | char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | { |
| 164 | return __va(phys_addr); |
| 165 | } |
| 166 | |
Yinghai Lu | 970ec1a | 2009-02-15 14:06:13 -0800 | [diff] [blame] | 167 | void __init __acpi_unmap_table(char *map, unsigned long size) |
Yinghai Lu | 7d97277 | 2009-02-07 15:39:41 -0800 | [diff] [blame] | 168 | { |
| 169 | } |
| 170 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | /* -------------------------------------------------------------------------- |
| 172 | Boot-time Table Parsing |
| 173 | -------------------------------------------------------------------------- */ |
| 174 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 175 | static int available_cpus __initdata; |
| 176 | struct acpi_table_madt *acpi_madt __initdata; |
| 177 | static u8 has_8259; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | |
| 179 | static int __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 180 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 181 | const unsigned long end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 183 | struct acpi_madt_local_apic_override *lapic; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 185 | lapic = (struct acpi_madt_local_apic_override *)header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
| 187 | if (BAD_MADT_ENTRY(lapic, end)) |
| 188 | return -EINVAL; |
| 189 | |
| 190 | if (lapic->address) { |
| 191 | iounmap(ipi_base_addr); |
| 192 | ipi_base_addr = ioremap(lapic->address, 0); |
| 193 | } |
| 194 | return 0; |
| 195 | } |
| 196 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | static int __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 198 | acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 200 | struct acpi_madt_local_sapic *lsapic; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 202 | lsapic = (struct acpi_madt_local_sapic *)header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 204 | /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 206 | if (lsapic->lapic_flags & ACPI_MADT_ENABLED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | #ifdef CONFIG_SMP |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 208 | smp_boot_data.cpu_phys_id[available_cpus] = |
| 209 | (lsapic->id << 8) | lsapic->eid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | ++available_cpus; |
| 212 | } |
| 213 | |
| 214 | total_cpus++; |
| 215 | return 0; |
| 216 | } |
| 217 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | static int __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 219 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 221 | struct acpi_madt_local_apic_nmi *lacpi_nmi; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 223 | lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | |
| 225 | if (BAD_MADT_ENTRY(lacpi_nmi, end)) |
| 226 | return -EINVAL; |
| 227 | |
| 228 | /* TBD: Support lapic_nmi entries */ |
| 229 | return 0; |
| 230 | } |
| 231 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | static int __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 233 | acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 235 | struct acpi_madt_io_sapic *iosapic; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 237 | iosapic = (struct acpi_madt_io_sapic *)header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | |
| 239 | if (BAD_MADT_ENTRY(iosapic, end)) |
| 240 | return -EINVAL; |
| 241 | |
Kenji Kaneshige | 0e888ad | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 242 | return iosapic_init(iosapic->address, iosapic->global_irq_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | } |
| 244 | |
Len Brown | 5810452 | 2006-05-13 01:12:15 -0400 | [diff] [blame] | 245 | static unsigned int __initdata acpi_madt_rev; |
| 246 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | static int __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 248 | acpi_parse_plat_int_src(struct acpi_subtable_header * header, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 249 | const unsigned long end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 251 | struct acpi_madt_interrupt_source *plintsrc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | int vector; |
| 253 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 254 | plintsrc = (struct acpi_madt_interrupt_source *)header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
| 256 | if (BAD_MADT_ENTRY(plintsrc, end)) |
| 257 | return -EINVAL; |
| 258 | |
| 259 | /* |
| 260 | * Get vector assignment for this interrupt, set attributes, |
| 261 | * and program the IOSAPIC routing table. |
| 262 | */ |
| 263 | vector = iosapic_register_platform_intr(plintsrc->type, |
| 264 | plintsrc->global_irq, |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 265 | plintsrc->io_sapic_vector, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | plintsrc->eid, |
| 267 | plintsrc->id, |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 268 | ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) == |
| 269 | ACPI_MADT_POLARITY_ACTIVE_HIGH) ? |
| 270 | IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, |
| 271 | ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) == |
| 272 | ACPI_MADT_TRIGGER_EDGE) ? |
| 273 | IOSAPIC_EDGE : IOSAPIC_LEVEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | |
| 275 | platform_intr_list[plintsrc->type] = vector; |
Ashok Raj | 55e59c5 | 2005-03-31 22:51:10 -0500 | [diff] [blame] | 276 | if (acpi_madt_rev > 1) { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 277 | acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE; |
Ashok Raj | 55e59c5 | 2005-03-31 22:51:10 -0500 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | /* |
| 281 | * Save the physical id, so we can check when its being removed |
| 282 | */ |
| 283 | acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff; |
| 284 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | return 0; |
| 286 | } |
| 287 | |
Ashok Raj | b88e926 | 2006-01-19 16:18:47 -0800 | [diff] [blame] | 288 | #ifdef CONFIG_HOTPLUG_CPU |
Ashok Raj | 55e59c5 | 2005-03-31 22:51:10 -0500 | [diff] [blame] | 289 | unsigned int can_cpei_retarget(void) |
| 290 | { |
| 291 | extern int cpe_vector; |
Ashok Raj | ff74190 | 2005-11-11 14:32:40 -0800 | [diff] [blame] | 292 | extern unsigned int force_cpei_retarget; |
Ashok Raj | 55e59c5 | 2005-03-31 22:51:10 -0500 | [diff] [blame] | 293 | |
| 294 | /* |
| 295 | * Only if CPEI is supported and the override flag |
| 296 | * is present, otherwise return that its re-targettable |
| 297 | * if we are in polling mode. |
| 298 | */ |
Ashok Raj | ff74190 | 2005-11-11 14:32:40 -0800 | [diff] [blame] | 299 | if (cpe_vector > 0) { |
| 300 | if (acpi_cpei_override || force_cpei_retarget) |
| 301 | return 1; |
| 302 | else |
| 303 | return 0; |
| 304 | } |
| 305 | return 1; |
Ashok Raj | 55e59c5 | 2005-03-31 22:51:10 -0500 | [diff] [blame] | 306 | } |
| 307 | |
| 308 | unsigned int is_cpu_cpei_target(unsigned int cpu) |
| 309 | { |
| 310 | unsigned int logical_id; |
| 311 | |
| 312 | logical_id = cpu_logical_id(acpi_cpei_phys_cpuid); |
| 313 | |
| 314 | if (logical_id == cpu) |
| 315 | return 1; |
| 316 | else |
| 317 | return 0; |
| 318 | } |
| 319 | |
| 320 | void set_cpei_target_cpu(unsigned int cpu) |
| 321 | { |
| 322 | acpi_cpei_phys_cpuid = cpu_physical_id(cpu); |
| 323 | } |
Ashok Raj | b88e926 | 2006-01-19 16:18:47 -0800 | [diff] [blame] | 324 | #endif |
Ashok Raj | 55e59c5 | 2005-03-31 22:51:10 -0500 | [diff] [blame] | 325 | |
| 326 | unsigned int get_cpei_target_cpu(void) |
| 327 | { |
| 328 | return acpi_cpei_phys_cpuid; |
| 329 | } |
| 330 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | static int __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 332 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 333 | const unsigned long end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 335 | struct acpi_madt_interrupt_override *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 337 | p = (struct acpi_madt_interrupt_override *)header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | |
| 339 | if (BAD_MADT_ENTRY(p, end)) |
| 340 | return -EINVAL; |
| 341 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 342 | iosapic_override_isa_irq(p->source_irq, p->global_irq, |
| 343 | ((p->inti_flags & ACPI_MADT_POLARITY_MASK) == |
Liu Jiang | 0577bb6 | 2012-03-13 22:07:09 +0800 | [diff] [blame] | 344 | ACPI_MADT_POLARITY_ACTIVE_LOW) ? |
| 345 | IOSAPIC_POL_LOW : IOSAPIC_POL_HIGH, |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 346 | ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) == |
Liu Jiang | 0577bb6 | 2012-03-13 22:07:09 +0800 | [diff] [blame] | 347 | ACPI_MADT_TRIGGER_LEVEL) ? |
| 348 | IOSAPIC_LEVEL : IOSAPIC_EDGE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | return 0; |
| 350 | } |
| 351 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | static int __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 353 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 355 | struct acpi_madt_nmi_source *nmi_src; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 357 | nmi_src = (struct acpi_madt_nmi_source *)header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | |
| 359 | if (BAD_MADT_ENTRY(nmi_src, end)) |
| 360 | return -EINVAL; |
| 361 | |
| 362 | /* TBD: Support nimsrc entries */ |
| 363 | return 0; |
| 364 | } |
| 365 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 366 | static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 368 | if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | |
| 370 | /* |
| 371 | * Unfortunately ITC_DRIFT is not yet part of the |
| 372 | * official SAL spec, so the ITC_DRIFT bit is not |
| 373 | * set by the BIOS on this hardware. |
| 374 | */ |
| 375 | sal_platform_features |= IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT; |
| 376 | |
| 377 | cyclone_setup(); |
| 378 | } |
| 379 | } |
| 380 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 381 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | { |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 383 | acpi_madt = (struct acpi_table_madt *)table; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | |
Ashok Raj | 55e59c5 | 2005-03-31 22:51:10 -0500 | [diff] [blame] | 385 | acpi_madt_rev = acpi_madt->header.revision; |
| 386 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | /* remember the value for reference after free_initmem() */ |
| 388 | #ifdef CONFIG_ITANIUM |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 389 | has_8259 = 1; /* Firmware on old Itanium systems is broken */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | #else |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 391 | has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | #endif |
| 393 | iosapic_system_init(has_8259); |
| 394 | |
| 395 | /* Get base address of IPI Message Block */ |
| 396 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 397 | if (acpi_madt->address) |
| 398 | ipi_base_addr = ioremap(acpi_madt->address, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | |
| 400 | printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr); |
| 401 | |
| 402 | acpi_madt_oem_check(acpi_madt->header.oem_id, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 403 | acpi_madt->header.oem_table_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | |
| 405 | return 0; |
| 406 | } |
| 407 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | #ifdef CONFIG_ACPI_NUMA |
| 409 | |
| 410 | #undef SLIT_DEBUG |
| 411 | |
| 412 | #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32) |
| 413 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 414 | static int __initdata srat_num_cpus; /* number of cpus */ |
Greg Kroah-Hartman | 5b5e76e | 2012-12-21 14:05:13 -0800 | [diff] [blame] | 415 | static u32 pxm_flag[PXM_FLAG_LEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag)) |
| 417 | #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | static struct acpi_table_slit __initdata *slit_table; |
holt@sgi.com | 2c6e6db | 2008-04-03 15:17:13 -0500 | [diff] [blame] | 419 | cpumask_t early_cpu_possible_map = CPU_MASK_NONE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | |
Kurt Garloff | 9f10f6a | 2012-01-17 04:21:49 -0500 | [diff] [blame] | 421 | static int __init |
| 422 | get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa) |
Jack Steiner | 3ad5ef8 | 2006-03-02 16:02:25 -0600 | [diff] [blame] | 423 | { |
| 424 | int pxm; |
| 425 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 426 | pxm = pa->proximity_domain_lo; |
Kurt Garloff | 9f10f6a | 2012-01-17 04:21:49 -0500 | [diff] [blame] | 427 | if (ia64_platform_is("sn2") || acpi_srat_revision >= 2) |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 428 | pxm += pa->proximity_domain_hi[0] << 8; |
Jack Steiner | 3ad5ef8 | 2006-03-02 16:02:25 -0600 | [diff] [blame] | 429 | return pxm; |
| 430 | } |
| 431 | |
Kurt Garloff | 9f10f6a | 2012-01-17 04:21:49 -0500 | [diff] [blame] | 432 | static int __init |
| 433 | get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma) |
Jack Steiner | 3ad5ef8 | 2006-03-02 16:02:25 -0600 | [diff] [blame] | 434 | { |
| 435 | int pxm; |
| 436 | |
| 437 | pxm = ma->proximity_domain; |
Kurt Garloff | 9f10f6a | 2012-01-17 04:21:49 -0500 | [diff] [blame] | 438 | if (!ia64_platform_is("sn2") && acpi_srat_revision <= 1) |
Alexey Starikovskiy | defad23 | 2007-02-02 22:02:55 -0500 | [diff] [blame] | 439 | pxm &= 0xff; |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 440 | |
Jack Steiner | 3ad5ef8 | 2006-03-02 16:02:25 -0600 | [diff] [blame] | 441 | return pxm; |
| 442 | } |
| 443 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | /* |
| 445 | * ACPI 2.0 SLIT (System Locality Information Table) |
| 446 | * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf |
| 447 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 448 | void __init acpi_numa_slit_init(struct acpi_table_slit *slit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | { |
| 450 | u32 len; |
| 451 | |
| 452 | len = sizeof(struct acpi_table_header) + 8 |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 453 | + slit->locality_count * slit->locality_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | if (slit->header.length != len) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 455 | printk(KERN_ERR |
| 456 | "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | len, slit->header.length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | return; |
| 459 | } |
| 460 | slit_table = slit; |
| 461 | } |
| 462 | |
| 463 | void __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 464 | acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | { |
Jack Steiner | 3ad5ef8 | 2006-03-02 16:02:25 -0600 | [diff] [blame] | 466 | int pxm; |
| 467 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 468 | if (!(pa->flags & ACPI_SRAT_CPU_ENABLED)) |
Kenji Kaneshige | d903cea | 2006-03-15 14:45:11 +0900 | [diff] [blame] | 469 | return; |
| 470 | |
Tony Luck | 05f2f27 | 2011-01-07 09:11:55 -0800 | [diff] [blame] | 471 | if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) { |
| 472 | printk_once(KERN_WARNING |
Tony Luck | dff0092 | 2011-01-12 11:02:43 -0800 | [diff] [blame] | 473 | "node_cpuid[%ld] is too small, may not be able to use all cpus\n", |
Tony Luck | 05f2f27 | 2011-01-07 09:11:55 -0800 | [diff] [blame] | 474 | ARRAY_SIZE(node_cpuid)); |
| 475 | return; |
| 476 | } |
Jack Steiner | 3ad5ef8 | 2006-03-02 16:02:25 -0600 | [diff] [blame] | 477 | pxm = get_processor_proximity_domain(pa); |
| 478 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | /* record this node in proximity bitmap */ |
Jack Steiner | 3ad5ef8 | 2006-03-02 16:02:25 -0600 | [diff] [blame] | 480 | pxm_bit_set(pxm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 482 | node_cpuid[srat_num_cpus].phys_id = |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 483 | (pa->apic_id << 8) | (pa->local_sapic_eid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | /* nid should be overridden as logical node id later */ |
Jack Steiner | 3ad5ef8 | 2006-03-02 16:02:25 -0600 | [diff] [blame] | 485 | node_cpuid[srat_num_cpus].nid = pxm; |
Rusty Russell | 5d2068d | 2015-03-05 10:49:16 +1030 | [diff] [blame] | 486 | cpumask_set_cpu(srat_num_cpus, &early_cpu_possible_map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | srat_num_cpus++; |
| 488 | } |
| 489 | |
Thomas Renninger | 095adbb | 2012-07-31 17:41:09 +0200 | [diff] [blame] | 490 | int __init |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 491 | acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | { |
| 493 | unsigned long paddr, size; |
Jack Steiner | 3ad5ef8 | 2006-03-02 16:02:25 -0600 | [diff] [blame] | 494 | int pxm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | struct node_memblk_s *p, *q, *pend; |
| 496 | |
Jack Steiner | 3ad5ef8 | 2006-03-02 16:02:25 -0600 | [diff] [blame] | 497 | pxm = get_memory_proximity_domain(ma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | |
| 499 | /* fill node memory chunk structure */ |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 500 | paddr = ma->base_address; |
| 501 | size = ma->length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | |
| 503 | /* Ignore disabled entries */ |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 504 | if (!(ma->flags & ACPI_SRAT_MEM_ENABLED)) |
Thomas Renninger | 095adbb | 2012-07-31 17:41:09 +0200 | [diff] [blame] | 505 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | |
| 507 | /* record this node in proximity bitmap */ |
| 508 | pxm_bit_set(pxm); |
| 509 | |
| 510 | /* Insertion sort based on base address */ |
| 511 | pend = &node_memblk[num_node_memblks]; |
| 512 | for (p = &node_memblk[0]; p < pend; p++) { |
| 513 | if (paddr < p->start_paddr) |
| 514 | break; |
| 515 | } |
| 516 | if (p < pend) { |
| 517 | for (q = pend - 1; q >= p; q--) |
| 518 | *(q + 1) = *q; |
| 519 | } |
| 520 | p->start_paddr = paddr; |
| 521 | p->size = size; |
| 522 | p->nid = pxm; |
| 523 | num_node_memblks++; |
Thomas Renninger | 095adbb | 2012-07-31 17:41:09 +0200 | [diff] [blame] | 524 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | } |
| 526 | |
Robert Richter | 312521d | 2016-05-24 15:35:34 -0700 | [diff] [blame] | 527 | void __init acpi_numa_fixup(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | { |
| 529 | int i, j, node_from, node_to; |
| 530 | |
| 531 | /* If there's no SRAT, fix the phys_id and mark node 0 online */ |
| 532 | if (srat_num_cpus == 0) { |
| 533 | node_set_online(0); |
| 534 | node_cpuid[0].phys_id = hard_smp_processor_id(); |
| 535 | return; |
| 536 | } |
| 537 | |
| 538 | /* |
| 539 | * MCD - This can probably be dropped now. No need for pxm ID to node ID |
| 540 | * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES. |
| 541 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | nodes_clear(node_online_map); |
| 543 | for (i = 0; i < MAX_PXM_DOMAINS; i++) { |
| 544 | if (pxm_bit_test(i)) { |
Yasunori Goto | 762834e | 2006-06-23 02:03:19 -0700 | [diff] [blame] | 545 | int nid = acpi_map_pxm_to_node(i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | node_set_online(nid); |
| 547 | } |
| 548 | } |
| 549 | |
| 550 | /* set logical node id in memory chunk structure */ |
| 551 | for (i = 0; i < num_node_memblks; i++) |
Yasunori Goto | 762834e | 2006-06-23 02:03:19 -0700 | [diff] [blame] | 552 | node_memblk[i].nid = pxm_to_node(node_memblk[i].nid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
| 554 | /* assign memory bank numbers for each chunk on each node */ |
| 555 | for_each_online_node(i) { |
| 556 | int bank; |
| 557 | |
| 558 | bank = 0; |
| 559 | for (j = 0; j < num_node_memblks; j++) |
| 560 | if (node_memblk[j].nid == i) |
| 561 | node_memblk[j].bank = bank++; |
| 562 | } |
| 563 | |
| 564 | /* set logical node id in cpu structure */ |
holt@sgi.com | 2c6e6db | 2008-04-03 15:17:13 -0500 | [diff] [blame] | 565 | for_each_possible_early_cpu(i) |
Yasunori Goto | 762834e | 2006-06-23 02:03:19 -0700 | [diff] [blame] | 566 | node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 568 | printk(KERN_INFO "Number of logical nodes in system = %d\n", |
| 569 | num_online_nodes()); |
| 570 | printk(KERN_INFO "Number of memory chunks in system = %d\n", |
| 571 | num_node_memblks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | |
Fenghua Yu | 39b8931 | 2008-06-09 16:48:18 -0700 | [diff] [blame] | 573 | if (!slit_table) { |
| 574 | for (i = 0; i < MAX_NUMNODES; i++) |
| 575 | for (j = 0; j < MAX_NUMNODES; j++) |
| 576 | node_distance(i, j) = i == j ? LOCAL_DISTANCE : |
| 577 | REMOTE_DISTANCE; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 578 | return; |
Fenghua Yu | 39b8931 | 2008-06-09 16:48:18 -0700 | [diff] [blame] | 579 | } |
| 580 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | memset(numa_slit, -1, sizeof(numa_slit)); |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 582 | for (i = 0; i < slit_table->locality_count; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | if (!pxm_bit_test(i)) |
| 584 | continue; |
Yasunori Goto | 762834e | 2006-06-23 02:03:19 -0700 | [diff] [blame] | 585 | node_from = pxm_to_node(i); |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 586 | for (j = 0; j < slit_table->locality_count; j++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | if (!pxm_bit_test(j)) |
| 588 | continue; |
Yasunori Goto | 762834e | 2006-06-23 02:03:19 -0700 | [diff] [blame] | 589 | node_to = pxm_to_node(j); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | node_distance(node_from, node_to) = |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 591 | slit_table->entry[i * slit_table->locality_count + j]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | } |
| 593 | } |
| 594 | |
| 595 | #ifdef SLIT_DEBUG |
| 596 | printk("ACPI 2.0 SLIT locality table:\n"); |
| 597 | for_each_online_node(i) { |
| 598 | for_each_online_node(j) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 599 | printk("%03d ", node_distance(i, j)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | printk("\n"); |
| 601 | } |
| 602 | #endif |
| 603 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 604 | #endif /* CONFIG_ACPI_NUMA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | |
Kenji Kaneshige | 1f3a6a1 | 2005-07-28 14:42:00 -0400 | [diff] [blame] | 606 | /* |
| 607 | * success: return IRQ number (>=0) |
| 608 | * failure: return < 0 |
| 609 | */ |
Yinghai Lu | a2f809b | 2009-04-27 18:01:20 -0700 | [diff] [blame] | 610 | int acpi_register_gsi(struct device *dev, u32 gsi, int triggering, int polarity) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | { |
John Keller | 3948ec9 | 2006-12-22 11:50:04 -0600 | [diff] [blame] | 612 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
| 613 | return gsi; |
| 614 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | if (has_8259 && gsi < 16) |
| 616 | return isa_irq_to_vector(gsi); |
| 617 | |
| 618 | return iosapic_register_intr(gsi, |
Len Brown | cb65469 | 2005-12-28 02:43:51 -0500 | [diff] [blame] | 619 | (polarity == |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 620 | ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : |
| 621 | IOSAPIC_POL_LOW, |
Len Brown | cb65469 | 2005-12-28 02:43:51 -0500 | [diff] [blame] | 622 | (triggering == |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 623 | ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : |
| 624 | IOSAPIC_LEVEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | } |
Mika Westerberg | a42b9bf | 2012-10-31 22:44:55 +0100 | [diff] [blame] | 626 | EXPORT_SYMBOL_GPL(acpi_register_gsi); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 627 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 628 | void acpi_unregister_gsi(u32 gsi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | { |
John Keller | 7225394 | 2007-02-03 01:14:02 -0800 | [diff] [blame] | 630 | if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) |
| 631 | return; |
| 632 | |
Prarit Bhargava | 3fb2c74 | 2008-05-14 12:00:24 -0400 | [diff] [blame] | 633 | if (has_8259 && gsi < 16) |
| 634 | return; |
| 635 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | iosapic_unregister_intr(gsi); |
| 637 | } |
Mika Westerberg | a42b9bf | 2012-10-31 22:44:55 +0100 | [diff] [blame] | 638 | EXPORT_SYMBOL_GPL(acpi_unregister_gsi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 640 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | { |
| 642 | struct acpi_table_header *fadt_header; |
Alexey Starikovskiy | cee324b | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 643 | struct acpi_table_fadt *fadt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 645 | fadt_header = (struct acpi_table_header *)table; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | if (fadt_header->revision != 3) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 647 | return -ENODEV; /* Only deal with ACPI 2.0 FADT */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | |
Alexey Starikovskiy | cee324b | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 649 | fadt = (struct acpi_table_fadt *)fadt_header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | |
Yinghai Lu | a2f809b | 2009-04-27 18:01:20 -0700 | [diff] [blame] | 651 | acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE, |
| 652 | ACPI_ACTIVE_LOW); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | return 0; |
| 654 | } |
| 655 | |
Doug Chapman | 62ee054 | 2008-11-05 17:57:52 -0500 | [diff] [blame] | 656 | int __init early_acpi_boot_init(void) |
| 657 | { |
| 658 | int ret; |
| 659 | |
| 660 | /* |
| 661 | * do a partial walk of MADT to determine how many CPUs |
| 662 | * we have including offline CPUs |
| 663 | */ |
| 664 | if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
| 665 | printk(KERN_ERR PREFIX "Can't find MADT\n"); |
| 666 | return 0; |
| 667 | } |
| 668 | |
| 669 | ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, |
| 670 | acpi_parse_lsapic, NR_CPUS); |
| 671 | if (ret < 1) |
| 672 | printk(KERN_ERR PREFIX |
| 673 | "Error parsing MADT - no LAPIC entries\n"); |
Baoquan He | 247dba5 | 2014-05-05 12:48:25 +0800 | [diff] [blame] | 674 | else |
| 675 | acpi_lapic = 1; |
Doug Chapman | 62ee054 | 2008-11-05 17:57:52 -0500 | [diff] [blame] | 676 | |
Tejun Heo | 12cda81 | 2009-10-02 13:28:56 +0900 | [diff] [blame] | 677 | #ifdef CONFIG_SMP |
| 678 | if (available_cpus == 0) { |
| 679 | printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n"); |
| 680 | printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id()); |
| 681 | smp_boot_data.cpu_phys_id[available_cpus] = |
| 682 | hard_smp_processor_id(); |
| 683 | available_cpus = 1; /* We've got at least one of these, no? */ |
| 684 | } |
| 685 | smp_boot_data.cpu_count = available_cpus; |
| 686 | #endif |
| 687 | /* Make boot-up look pretty */ |
| 688 | printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, |
| 689 | total_cpus); |
| 690 | |
Doug Chapman | 62ee054 | 2008-11-05 17:57:52 -0500 | [diff] [blame] | 691 | return 0; |
| 692 | } |
| 693 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 694 | int __init acpi_boot_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | { |
| 696 | |
| 697 | /* |
| 698 | * MADT |
| 699 | * ---- |
| 700 | * Parse the Multiple APIC Description Table (MADT), if exists. |
| 701 | * Note that this table provides platform SMP configuration |
| 702 | * information -- the successor to MPS tables. |
| 703 | */ |
| 704 | |
John Keller | db2d4cc | 2007-02-16 15:07:27 -0600 | [diff] [blame] | 705 | if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | printk(KERN_ERR PREFIX "Can't find MADT\n"); |
| 707 | goto skip_madt; |
| 708 | } |
| 709 | |
| 710 | /* Local APIC */ |
| 711 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 712 | if (acpi_table_parse_madt |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 713 | (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 714 | printk(KERN_ERR PREFIX |
| 715 | "Error parsing LAPIC address override entry\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 717 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 718 | < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); |
| 720 | |
| 721 | /* I/O APIC */ |
| 722 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 723 | if (acpi_table_parse_madt |
George Beshers | 7f6ff62 | 2007-10-11 15:33:55 -0400 | [diff] [blame] | 724 | (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) { |
| 725 | if (!ia64_platform_is("sn2")) |
| 726 | printk(KERN_ERR PREFIX |
| 727 | "Error parsing MADT - no IOSAPIC entries\n"); |
| 728 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | |
| 730 | /* System-Level Interrupt Routing */ |
| 731 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 732 | if (acpi_table_parse_madt |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 733 | (ACPI_MADT_TYPE_INTERRUPT_SOURCE, acpi_parse_plat_int_src, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 734 | ACPI_MAX_PLATFORM_INTERRUPTS) < 0) |
| 735 | printk(KERN_ERR PREFIX |
| 736 | "Error parsing platform interrupt source entry\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 738 | if (acpi_table_parse_madt |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 739 | (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, 0) < 0) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 740 | printk(KERN_ERR PREFIX |
| 741 | "Error parsing interrupt source overrides entry\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 743 | if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 745 | skip_madt: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | |
| 747 | /* |
| 748 | * FADT says whether a legacy keyboard controller is present. |
| 749 | * The FADT also contains an SCI_INT line, by which the system |
| 750 | * gets interrupts such as power and sleep buttons. If it's not |
| 751 | * on a Legacy interrupt, it needs to be setup. |
| 752 | */ |
John Keller | db2d4cc | 2007-02-16 15:07:27 -0600 | [diff] [blame] | 753 | if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | printk(KERN_ERR PREFIX "Can't find FADT\n"); |
| 755 | |
Tejun Heo | 12cda81 | 2009-10-02 13:28:56 +0900 | [diff] [blame] | 756 | #ifdef CONFIG_ACPI_NUMA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | #ifdef CONFIG_SMP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | if (srat_num_cpus == 0) { |
| 759 | int cpu, i = 1; |
| 760 | for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 761 | if (smp_boot_data.cpu_phys_id[cpu] != |
| 762 | hard_smp_processor_id()) |
| 763 | node_cpuid[i++].phys_id = |
| 764 | smp_boot_data.cpu_phys_id[cpu]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | #endif |
Tony Luck | 8d7e351 | 2005-07-06 18:18:10 -0700 | [diff] [blame] | 767 | build_cpu_to_node_map(); |
| 768 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | return 0; |
| 770 | } |
| 771 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 772 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | { |
Kenji Kaneshige | 3c3738c | 2007-07-26 15:31:34 +0900 | [diff] [blame] | 774 | int tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | |
| 776 | if (has_8259 && gsi < 16) |
| 777 | *irq = isa_irq_to_vector(gsi); |
| 778 | else { |
Kenji Kaneshige | 3c3738c | 2007-07-26 15:31:34 +0900 | [diff] [blame] | 779 | tmp = gsi_to_irq(gsi); |
| 780 | if (tmp == -1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | return -1; |
Kenji Kaneshige | 3c3738c | 2007-07-26 15:31:34 +0900 | [diff] [blame] | 782 | *irq = tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | } |
| 784 | return 0; |
| 785 | } |
| 786 | |
Eric W. Biederman | 2c2df84 | 2010-03-30 01:07:02 -0700 | [diff] [blame] | 787 | int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) |
| 788 | { |
| 789 | if (isa_irq >= 16) |
| 790 | return -1; |
| 791 | *gsi = isa_irq; |
| 792 | return 0; |
| 793 | } |
| 794 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | /* |
| 796 | * ACPI based hotplug CPU support |
| 797 | */ |
| 798 | #ifdef CONFIG_ACPI_HOTPLUG_CPU |
Bjorn Helgaas | b1e9cee | 2014-01-24 15:28:42 -0700 | [diff] [blame] | 799 | static int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | { |
| 801 | #ifdef CONFIG_ACPI_NUMA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | /* |
KAMEZAWA Hiroyuki | 0899298 | 2006-09-25 16:25:21 -0700 | [diff] [blame] | 803 | * We don't have cpu-only-node hotadd. But if the system equips |
| 804 | * SRAT table, pxm is already found and node is ready. |
| 805 | * So, just pxm_to_nid(pxm) is OK. |
| 806 | * This code here is for the system which doesn't have full SRAT |
| 807 | * table for possible cpus. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 809 | node_cpuid[cpu].phys_id = physid; |
Bjorn Helgaas | b1e9cee | 2014-01-24 15:28:42 -0700 | [diff] [blame] | 810 | node_cpuid[cpu].nid = acpi_get_node(handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | #endif |
Bjorn Helgaas | b1e9cee | 2014-01-24 15:28:42 -0700 | [diff] [blame] | 812 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | } |
| 814 | |
Ashok Raj | a6b14fa | 2006-02-14 15:01:12 -0800 | [diff] [blame] | 815 | int additional_cpus __initdata = -1; |
| 816 | |
| 817 | static __init int setup_additional_cpus(char *s) |
| 818 | { |
| 819 | if (s) |
| 820 | additional_cpus = simple_strtol(s, NULL, 0); |
| 821 | |
| 822 | return 0; |
| 823 | } |
| 824 | |
| 825 | early_param("additional_cpus", setup_additional_cpus); |
| 826 | |
| 827 | /* |
Rusty Russell | 5f054e3 | 2012-03-29 15:38:31 +1030 | [diff] [blame] | 828 | * cpu_possible_mask should be static, it cannot change as CPUs |
Ashok Raj | a6b14fa | 2006-02-14 15:01:12 -0800 | [diff] [blame] | 829 | * are onlined, or offlined. The reason is per-cpu data-structures |
| 830 | * are allocated by some modules at init time, and dont expect to |
| 831 | * do this dynamically on cpu arrival/departure. |
Srivatsa S. Bhat | 7d7f984 | 2012-03-28 14:42:46 -0700 | [diff] [blame] | 832 | * cpu_present_mask on the other hand can change dynamically. |
Ashok Raj | a6b14fa | 2006-02-14 15:01:12 -0800 | [diff] [blame] | 833 | * In case when cpu_hotplug is not compiled, then we resort to current |
| 834 | * behaviour, which is cpu_possible == cpu_present. |
| 835 | * - Ashok Raj |
| 836 | * |
| 837 | * Three ways to find out the number of additional hotplug CPUs: |
| 838 | * - If the BIOS specified disabled CPUs in ACPI/mptables use that. |
| 839 | * - The user can overwrite it with additional_cpus=NUM |
| 840 | * - Otherwise don't reserve additional CPUs. |
| 841 | */ |
| 842 | __init void prefill_possible_map(void) |
| 843 | { |
| 844 | int i; |
| 845 | int possible, disabled_cpus; |
| 846 | |
| 847 | disabled_cpus = total_cpus - available_cpus; |
Ashok Raj | 8f8b1138 | 2006-02-16 14:01:48 -0800 | [diff] [blame] | 848 | |
Ashok Raj | a6b14fa | 2006-02-14 15:01:12 -0800 | [diff] [blame] | 849 | if (additional_cpus == -1) { |
Ashok Raj | 8f8b1138 | 2006-02-16 14:01:48 -0800 | [diff] [blame] | 850 | if (disabled_cpus > 0) |
Ashok Raj | a6b14fa | 2006-02-14 15:01:12 -0800 | [diff] [blame] | 851 | additional_cpus = disabled_cpus; |
Ashok Raj | 8f8b1138 | 2006-02-16 14:01:48 -0800 | [diff] [blame] | 852 | else |
Ashok Raj | a6b14fa | 2006-02-14 15:01:12 -0800 | [diff] [blame] | 853 | additional_cpus = 0; |
Ashok Raj | 8f8b1138 | 2006-02-16 14:01:48 -0800 | [diff] [blame] | 854 | } |
| 855 | |
| 856 | possible = available_cpus + additional_cpus; |
| 857 | |
Yinghai Lu | 2b633e3 | 2010-02-10 01:20:37 -0800 | [diff] [blame] | 858 | if (possible > nr_cpu_ids) |
| 859 | possible = nr_cpu_ids; |
Ashok Raj | a6b14fa | 2006-02-14 15:01:12 -0800 | [diff] [blame] | 860 | |
| 861 | printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n", |
Ashok Raj | 8f8b1138 | 2006-02-16 14:01:48 -0800 | [diff] [blame] | 862 | possible, max((possible - available_cpus), 0)); |
Ashok Raj | a6b14fa | 2006-02-14 15:01:12 -0800 | [diff] [blame] | 863 | |
| 864 | for (i = 0; i < possible; i++) |
Rusty Russell | 2af51a3 | 2009-03-16 14:12:43 +1030 | [diff] [blame] | 865 | set_cpu_possible(i, true); |
Ashok Raj | a6b14fa | 2006-02-14 15:01:12 -0800 | [diff] [blame] | 866 | } |
| 867 | |
Jiang Liu | d536bf3 | 2013-09-02 11:57:35 +0800 | [diff] [blame] | 868 | static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | cpumask_t tmp_map; |
Jiang Liu | d536bf3 | 2013-09-02 11:57:35 +0800 | [diff] [blame] | 871 | int cpu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | |
Rusty Russell | 5dd3c99 | 2009-03-16 14:12:42 +1030 | [diff] [blame] | 873 | cpumask_complement(&tmp_map, cpu_present_mask); |
| 874 | cpu = cpumask_first(&tmp_map); |
| 875 | if (cpu >= nr_cpu_ids) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | return -EINVAL; |
| 877 | |
| 878 | acpi_map_cpu2node(handle, cpu, physid); |
| 879 | |
Srivatsa S. Bhat | 7d7f984 | 2012-03-28 14:42:46 -0700 | [diff] [blame] | 880 | set_cpu_present(cpu, true); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | ia64_cpu_to_sapicid[cpu] = physid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | |
Alex Chiang | d8191fa | 2010-02-22 12:11:39 -0700 | [diff] [blame] | 883 | acpi_processor_set_pdc(handle); |
| 884 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | *pcpu = cpu; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 886 | return (0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 888 | |
Jan Beulich | af10f94 | 2011-02-17 16:36:24 +0000 | [diff] [blame] | 889 | /* wrapper to silence section mismatch warning */ |
Catalin Marinas | 828aef3 | 2015-03-24 14:02:46 +0000 | [diff] [blame] | 890 | int __ref acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, int *pcpu) |
Jan Beulich | af10f94 | 2011-02-17 16:36:24 +0000 | [diff] [blame] | 891 | { |
Jiang Liu | d536bf3 | 2013-09-02 11:57:35 +0800 | [diff] [blame] | 892 | return _acpi_map_lsapic(handle, physid, pcpu); |
Jan Beulich | af10f94 | 2011-02-17 16:36:24 +0000 | [diff] [blame] | 893 | } |
Hanjun Guo | d02dc27 | 2015-01-04 18:55:03 +0800 | [diff] [blame] | 894 | EXPORT_SYMBOL(acpi_map_cpu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | |
Hanjun Guo | d02dc27 | 2015-01-04 18:55:03 +0800 | [diff] [blame] | 896 | int acpi_unmap_cpu(int cpu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | ia64_cpu_to_sapicid[cpu] = -1; |
Srivatsa S. Bhat | 7d7f984 | 2012-03-28 14:42:46 -0700 | [diff] [blame] | 899 | set_cpu_present(cpu, false); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | |
| 901 | #ifdef CONFIG_ACPI_NUMA |
| 902 | /* NUMA specific cleanup's */ |
| 903 | #endif |
| 904 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 905 | return (0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | } |
Hanjun Guo | d02dc27 | 2015-01-04 18:55:03 +0800 | [diff] [blame] | 907 | EXPORT_SYMBOL(acpi_unmap_cpu); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 908 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | |
| 910 | #ifdef CONFIG_ACPI_NUMA |
Greg Kroah-Hartman | 5b5e76e | 2012-12-21 14:05:13 -0800 | [diff] [blame] | 911 | static acpi_status acpi_map_iosapic(acpi_handle handle, u32 depth, |
| 912 | void *context, void **ret) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 914 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | union acpi_object *obj; |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 916 | struct acpi_madt_io_sapic *iosapic; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | unsigned int gsi_base; |
Bjorn Helgaas | b1e9cee | 2014-01-24 15:28:42 -0700 | [diff] [blame] | 918 | int node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | |
| 920 | /* Only care about objects w/ a method that returns the MADT */ |
| 921 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) |
| 922 | return AE_OK; |
| 923 | |
| 924 | if (!buffer.length || !buffer.pointer) |
| 925 | return AE_OK; |
| 926 | |
| 927 | obj = buffer.pointer; |
| 928 | if (obj->type != ACPI_TYPE_BUFFER || |
| 929 | obj->buffer.length < sizeof(*iosapic)) { |
Len Brown | 02438d8 | 2006-06-30 03:19:10 -0400 | [diff] [blame] | 930 | kfree(buffer.pointer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | return AE_OK; |
| 932 | } |
| 933 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 934 | iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | |
Alexey Starikovskiy | 5f3b1a8 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 936 | if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) { |
Len Brown | 02438d8 | 2006-06-30 03:19:10 -0400 | [diff] [blame] | 937 | kfree(buffer.pointer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | return AE_OK; |
| 939 | } |
| 940 | |
| 941 | gsi_base = iosapic->global_irq_base; |
| 942 | |
Len Brown | 02438d8 | 2006-06-30 03:19:10 -0400 | [diff] [blame] | 943 | kfree(buffer.pointer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | |
Bjorn Helgaas | b1e9cee | 2014-01-24 15:28:42 -0700 | [diff] [blame] | 945 | /* OK, it's an IOSAPIC MADT entry; associate it with a node */ |
| 946 | node = acpi_get_node(handle); |
| 947 | if (node == NUMA_NO_NODE || !node_online(node) || |
Rusty Russell | fbb776c | 2008-12-26 22:23:40 +1030 | [diff] [blame] | 948 | cpumask_empty(cpumask_of_node(node))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | return AE_OK; |
| 950 | |
| 951 | /* We know a gsi to node mapping! */ |
| 952 | map_iosapic_to_node(gsi_base, node); |
| 953 | return AE_OK; |
| 954 | } |
Bjorn Helgaas | 650316f | 2005-09-16 11:43:45 -0600 | [diff] [blame] | 955 | |
| 956 | static int __init |
| 957 | acpi_map_iosapics (void) |
| 958 | { |
| 959 | acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL); |
| 960 | return 0; |
| 961 | } |
| 962 | |
| 963 | fs_initcall(acpi_map_iosapics); |
| 964 | #endif /* CONFIG_ACPI_NUMA */ |
Kenji Kaneshige | b1bb248 | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 965 | |
Hidetoshi Seto | c5b5a59 | 2008-04-30 16:51:06 +0900 | [diff] [blame] | 966 | int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
Kenji Kaneshige | b1bb248 | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 967 | { |
Kenji Kaneshige | 0e888ad | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 968 | int err; |
| 969 | |
| 970 | if ((err = iosapic_init(phys_addr, gsi_base))) |
| 971 | return err; |
| 972 | |
Peter Chubb | 24b8e0c | 2005-09-15 15:36:35 +1000 | [diff] [blame] | 973 | #ifdef CONFIG_ACPI_NUMA |
Kenji Kaneshige | 0e888ad | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 974 | acpi_map_iosapic(handle, 0, NULL, NULL); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 975 | #endif /* CONFIG_ACPI_NUMA */ |
Kenji Kaneshige | 0e888ad | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 976 | |
| 977 | return 0; |
Kenji Kaneshige | b1bb248 | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 978 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 979 | |
Kenji Kaneshige | b1bb248 | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 980 | EXPORT_SYMBOL(acpi_register_ioapic); |
| 981 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 982 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
Kenji Kaneshige | b1bb248 | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 983 | { |
Kenji Kaneshige | 0e888ad | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 984 | return iosapic_remove(gsi_base); |
Kenji Kaneshige | b1bb248 | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 985 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 986 | |
Kenji Kaneshige | b1bb248 | 2005-04-28 00:25:58 -0700 | [diff] [blame] | 987 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
| 988 | |
Len Brown | e8b2fd0 | 2007-07-24 22:26:33 -0400 | [diff] [blame] | 989 | /* |
Rafael J. Wysocki | f1a2003 | 2011-02-08 23:42:22 +0100 | [diff] [blame] | 990 | * acpi_suspend_lowlevel() - save kernel state and suspend. |
Len Brown | e8b2fd0 | 2007-07-24 22:26:33 -0400 | [diff] [blame] | 991 | * |
| 992 | * TBD when when IA64 starts to support suspend... |
| 993 | */ |
Rafael J. Wysocki | f1a2003 | 2011-02-08 23:42:22 +0100 | [diff] [blame] | 994 | int acpi_suspend_lowlevel(void) { return 0; } |