X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fia64%2Fkernel%2Facpi.c;h=29f05d4b68cdd7f17911f8b840838faa795be2c4;hb=refs%2Fheads%2Fvserver;hp=72dfd9e7de0ffc470e3922fab11927b8e3fd0916;hpb=f7f1b0f1e2fbadeab12d24236000e778aa9b1ead;p=linux-2.6.git diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c index 72dfd9e7d..29f05d4b6 100644 --- a/arch/ia64/kernel/acpi.c +++ b/arch/ia64/kernel/acpi.c @@ -11,6 +11,7 @@ * Copyright (C) 2001 Jenna Hall * Copyright (C) 2001 Takayoshi Kochi * Copyright (C) 2002 Erich Focht + * Copyright (C) 2004 Ashok Raj * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * @@ -31,7 +32,6 @@ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ -#include #include #include #include @@ -55,7 +55,7 @@ #define BAD_MADT_ENTRY(entry, end) ( \ (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ - ((acpi_table_entry_header *)entry)->length != sizeof(*entry)) + ((acpi_table_entry_header *)entry)->length < sizeof(*entry)) #define PREFIX "ACPI: " @@ -64,16 +64,15 @@ EXPORT_SYMBOL(pm_idle); void (*pm_power_off) (void); EXPORT_SYMBOL(pm_power_off); -unsigned char acpi_kbd_controller_present = 1; -unsigned char acpi_legacy_devices; +unsigned int acpi_cpei_override; +unsigned int acpi_cpei_phys_cpuid; #define MAX_SAPICS 256 -u16 ia64_acpiid_to_sapicid[MAX_SAPICS] = - { [0 ... MAX_SAPICS - 1] = -1 }; +u16 ia64_acpiid_to_sapicid[MAX_SAPICS] = {[0 ... MAX_SAPICS - 1] = -1 }; + EXPORT_SYMBOL(ia64_acpiid_to_sapicid); -const char * -acpi_get_sysname (void) +const char *acpi_get_sysname(void) { #ifdef CONFIG_IA64_GENERIC unsigned long rsdp_phys; @@ -83,27 +82,29 @@ acpi_get_sysname (void) rsdp_phys = acpi_find_rsdp(); if (!rsdp_phys) { - printk(KERN_ERR "ACPI 2.0 RSDP not found, default to \"dig\"\n"); + printk(KERN_ERR + "ACPI 2.0 RSDP not found, default to \"dig\"\n"); return "dig"; } - rsdp = (struct acpi20_table_rsdp *) __va(rsdp_phys); + 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"); + printk(KERN_ERR + "ACPI 2.0 RSDP signature incorrect, default to \"dig\"\n"); return "dig"; } - xsdt = (struct acpi_table_xsdt *) __va(rsdp->xsdt_address); + 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"); + 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")) { + } else if (!strcmp(hdr->oem_id, "SGI")) { return "sn2"; } @@ -125,7 +126,7 @@ acpi_get_sysname (void) #endif } -#ifdef CONFIG_ACPI_BOOT +#ifdef CONFIG_ACPI #define ACPI_MAX_PLATFORM_INTERRUPTS 256 @@ -140,8 +141,7 @@ 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 acpi_request_vector(u32 int_type) { int vector = -1; @@ -149,12 +149,12 @@ acpi_request_vector (u32 int_type) /* corrected platform error interrupt */ vector = platform_intr_list[int_type]; } else - printk(KERN_ERR "acpi_request_vector(): invalid interrupt type\n"); + printk(KERN_ERR + "acpi_request_vector(): invalid interrupt type\n"); return vector; } -char * -__acpi_map_table (unsigned long phys_addr, unsigned long size) +char *__acpi_map_table(unsigned long phys_addr, unsigned long size) { return __va(phys_addr); } @@ -163,19 +163,18 @@ __acpi_map_table (unsigned long phys_addr, unsigned long size) 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 total_cpus __initdata; +static int available_cpus __initdata; +struct acpi_table_madt *acpi_madt __initdata; +static u8 has_8259; static int __init -acpi_parse_lapic_addr_ovr ( - acpi_table_entry_header *header, const unsigned long end) +acpi_parse_lapic_addr_ovr(acpi_table_entry_header * header, + const unsigned long end) { struct acpi_table_lapic_addr_ovr *lapic; - lapic = (struct acpi_table_lapic_addr_ovr *) header; + lapic = (struct acpi_table_lapic_addr_ovr *)header; if (BAD_MADT_ENTRY(lapic, end)) return -EINVAL; @@ -187,22 +186,23 @@ acpi_parse_lapic_addr_ovr ( return 0; } - static int __init -acpi_parse_lsapic (acpi_table_entry_header *header, const unsigned long end) +acpi_parse_lsapic(acpi_table_entry_header * header, const unsigned long end) { struct acpi_table_lsapic *lsapic; - lsapic = (struct acpi_table_lsapic *) header; + lsapic = (struct acpi_table_lsapic *)header; if (BAD_MADT_ENTRY(lsapic, end)) return -EINVAL; if (lsapic->flags.enabled) { #ifdef CONFIG_SMP - smp_boot_data.cpu_phys_id[available_cpus] = (lsapic->id << 8) | lsapic->eid; + smp_boot_data.cpu_phys_id[available_cpus] = + (lsapic->id << 8) | lsapic->eid; #endif - ia64_acpiid_to_sapicid[lsapic->acpi_id] = (lsapic->id << 8) | lsapic->eid; + ia64_acpiid_to_sapicid[lsapic->acpi_id] = + (lsapic->id << 8) | lsapic->eid; ++available_cpus; } @@ -210,13 +210,12 @@ acpi_parse_lsapic (acpi_table_entry_header *header, const unsigned long end) return 0; } - static int __init -acpi_parse_lapic_nmi (acpi_table_entry_header *header, const unsigned long end) +acpi_parse_lapic_nmi(acpi_table_entry_header * header, const unsigned long end) { struct acpi_table_lapic_nmi *lacpi_nmi; - lacpi_nmi = (struct acpi_table_lapic_nmi*) header; + lacpi_nmi = (struct acpi_table_lapic_nmi *)header; if (BAD_MADT_ENTRY(lacpi_nmi, end)) return -EINVAL; @@ -225,31 +224,29 @@ acpi_parse_lapic_nmi (acpi_table_entry_header *header, const unsigned long end) return 0; } - static int __init -acpi_parse_iosapic (acpi_table_entry_header *header, const unsigned long end) +acpi_parse_iosapic(acpi_table_entry_header * header, const unsigned long end) { struct acpi_table_iosapic *iosapic; - iosapic = (struct acpi_table_iosapic *) header; + iosapic = (struct acpi_table_iosapic *)header; if (BAD_MADT_ENTRY(iosapic, end)) return -EINVAL; - iosapic_init(iosapic->address, iosapic->global_irq_base); - - return 0; + return iosapic_init(iosapic->address, iosapic->global_irq_base); } +static unsigned int __initdata acpi_madt_rev; static int __init -acpi_parse_plat_int_src ( - acpi_table_entry_header *header, const unsigned long end) +acpi_parse_plat_int_src(acpi_table_entry_header * header, + const unsigned long end) { struct acpi_table_plat_int_src *plintsrc; int vector; - plintsrc = (struct acpi_table_plat_int_src *) header; + plintsrc = (struct acpi_table_plat_int_src *)header; if (BAD_MADT_ENTRY(plintsrc, end)) return -EINVAL; @@ -263,38 +260,94 @@ acpi_parse_plat_int_src ( 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); + (plintsrc->flags.polarity == + 1) ? IOSAPIC_POL_HIGH : + IOSAPIC_POL_LOW, + (plintsrc->flags.trigger == + 1) ? IOSAPIC_EDGE : + IOSAPIC_LEVEL); platform_intr_list[plintsrc->type] = vector; + if (acpi_madt_rev > 1) { + acpi_cpei_override = plintsrc->plint_flags.cpei_override_flag; + } + + /* + * Save the physical id, so we can check when its being removed + */ + acpi_cpei_phys_cpuid = ((plintsrc->id << 8) | (plintsrc->eid)) & 0xffff; + return 0; } +#ifdef CONFIG_HOTPLUG_CPU +unsigned int can_cpei_retarget(void) +{ + extern int cpe_vector; + extern unsigned int force_cpei_retarget; + + /* + * Only if CPEI is supported and the override flag + * is present, otherwise return that its re-targettable + * if we are in polling mode. + */ + if (cpe_vector > 0) { + if (acpi_cpei_override || force_cpei_retarget) + return 1; + else + return 0; + } + return 1; +} + +unsigned int is_cpu_cpei_target(unsigned int cpu) +{ + unsigned int logical_id; + + logical_id = cpu_logical_id(acpi_cpei_phys_cpuid); + + if (logical_id == cpu) + return 1; + else + return 0; +} + +void set_cpei_target_cpu(unsigned int cpu) +{ + acpi_cpei_phys_cpuid = cpu_physical_id(cpu); +} +#endif + +unsigned int get_cpei_target_cpu(void) +{ + return acpi_cpei_phys_cpuid; +} static int __init -acpi_parse_int_src_ovr ( - acpi_table_entry_header *header, const unsigned long end) +acpi_parse_int_src_ovr(acpi_table_entry_header * header, + const unsigned long end) { struct acpi_table_int_src_ovr *p; - p = (struct acpi_table_int_src_ovr *) header; + p = (struct acpi_table_int_src_ovr *)header; if (BAD_MADT_ENTRY(p, end)) return -EINVAL; iosapic_override_isa_irq(p->bus_irq, p->global_irq, - (p->flags.polarity == 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, - (p->flags.trigger == 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL); + (p->flags.polarity == + 1) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, + (p->flags.trigger == + 1) ? IOSAPIC_EDGE : IOSAPIC_LEVEL); return 0; } - static int __init -acpi_parse_nmi_src (acpi_table_entry_header *header, const unsigned long end) +acpi_parse_nmi_src(acpi_table_entry_header * header, const unsigned long end) { struct acpi_table_nmi_src *nmi_src; - nmi_src = (struct acpi_table_nmi_src*) header; + nmi_src = (struct acpi_table_nmi_src *)header; if (BAD_MADT_ENTRY(nmi_src, end)) return -EINVAL; @@ -303,11 +356,9 @@ acpi_parse_nmi_src (acpi_table_entry_header *header, const unsigned long end) return 0; } -static void __init -acpi_madt_oem_check (char *oem_id, char *oem_table_id) +static void __init acpi_madt_oem_check(char *oem_id, char *oem_table_id) { - if (!strncmp(oem_id, "IBM", 3) && - (!strncmp(oem_table_id, "SERMOW", 6))) { + if (!strncmp(oem_id, "IBM", 3) && (!strncmp(oem_table_id, "SERMOW", 6))) { /* * Unfortunately ITC_DRIFT is not yet part of the @@ -320,17 +371,18 @@ acpi_madt_oem_check (char *oem_id, char *oem_table_id) } } -static int __init -acpi_parse_madt (unsigned long phys_addr, unsigned long size) +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); + acpi_madt = (struct acpi_table_madt *)__va(phys_addr); + + acpi_madt_rev = acpi_madt->header.revision; /* remember the value for reference after free_initmem() */ #ifdef CONFIG_ITANIUM - has_8259 = 1; /* Firmware on old Itanium systems is broken */ + has_8259 = 1; /* Firmware on old Itanium systems is broken */ #else has_8259 = acpi_madt->flags.pcat_compat; #endif @@ -344,40 +396,56 @@ acpi_parse_madt (unsigned long phys_addr, unsigned long size) printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr); acpi_madt_oem_check(acpi_madt->header.oem_id, - acpi_madt->header.oem_table_id); + 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 int __initdata srat_num_cpus; /* number of cpus */ static u32 __devinitdata pxm_flag[PXM_FLAG_LEN]; #define pxm_bit_set(bit) (set_bit(bit,(void *)pxm_flag)) #define pxm_bit_test(bit) (test_bit(bit,(void *)pxm_flag)) -/* maps to convert between proximity domain and logical node ID */ -int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS]; -int __initdata nid_to_pxm_map[MAX_NUMNODES]; static struct acpi_table_slit __initdata *slit_table; +static int get_processor_proximity_domain(struct acpi_table_processor_affinity *pa) +{ + int pxm; + + pxm = pa->proximity_domain; + if (ia64_platform_is("sn2")) + pxm += pa->reserved[0] << 8; + return pxm; +} + +static int get_memory_proximity_domain(struct acpi_table_memory_affinity *ma) +{ + int pxm; + + pxm = ma->proximity_domain; + if (ia64_platform_is("sn2")) + pxm += ma->reserved1[0] << 8; + return pxm; +} + /* * 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) +void __init acpi_numa_slit_init(struct acpi_table_slit *slit) { u32 len; len = sizeof(struct acpi_table_header) + 8 - + slit->localities * slit->localities; + + slit->localities * slit->localities; if (slit->header.length != len) { - printk(KERN_ERR "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n", + 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; @@ -386,25 +454,33 @@ acpi_numa_slit_init (struct acpi_table_slit *slit) } void __init -acpi_numa_processor_affinity_init (struct acpi_table_processor_affinity *pa) +acpi_numa_processor_affinity_init(struct acpi_table_processor_affinity *pa) { + int pxm; + + if (!pa->flags.enabled) + return; + + pxm = get_processor_proximity_domain(pa); + /* record this node in proximity bitmap */ - pxm_bit_set(pa->proximity_domain); + pxm_bit_set(pxm); - node_cpuid[srat_num_cpus].phys_id = (pa->apic_id << 8) | (pa->lsapic_eid); + 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; + node_cpuid[srat_num_cpus].nid = pxm; srat_num_cpus++; } void __init -acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma) +acpi_numa_memory_affinity_init(struct acpi_table_memory_affinity *ma) { unsigned long paddr, size; - u8 pxm; + int pxm; struct node_memblk_s *p, *q, *pend; - pxm = ma->proximity_domain; + pxm = get_memory_proximity_domain(ma); /* fill node memory chunk structure */ paddr = ma->base_addr_hi; @@ -435,8 +511,7 @@ acpi_numa_memory_affinity_init (struct acpi_table_memory_affinity *ma) num_node_memblks++; } -void __init -acpi_numa_arch_fixup (void) +void __init acpi_numa_arch_fixup(void) { int i, j, node_from, node_to; @@ -451,22 +526,17 @@ acpi_numa_arch_fixup (void) * MCD - This can probably be dropped now. No need for pxm ID to node ID * mapping with sparse node numbering iff MAX_PXM_DOMAINS <= MAX_NUMNODES. */ - /* calculate total number of nodes in system from PXM bitmap */ - memset(pxm_to_nid_map, -1, sizeof(pxm_to_nid_map)); - memset(nid_to_pxm_map, -1, sizeof(nid_to_pxm_map)); nodes_clear(node_online_map); for (i = 0; i < MAX_PXM_DOMAINS; i++) { if (pxm_bit_test(i)) { - int nid = num_online_nodes(); - pxm_to_nid_map[i] = nid; - nid_to_pxm_map[nid] = i; + int nid = acpi_map_pxm_to_node(i); node_set_online(nid); } } /* set logical node id in memory chunk structure */ for (i = 0; i < num_node_memblks; i++) - node_memblk[i].nid = pxm_to_nid_map[node_memblk[i].nid]; + node_memblk[i].nid = pxm_to_node(node_memblk[i].nid); /* assign memory bank numbers for each chunk on each node */ for_each_online_node(i) { @@ -480,23 +550,26 @@ acpi_numa_arch_fixup (void) /* 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]; + node_cpuid[i].nid = pxm_to_node(node_cpuid[i].nid); - printk(KERN_INFO "Number of logical nodes in system = %d\n", num_online_nodes()); - printk(KERN_INFO "Number of memory chunks in system = %d\n", num_node_memblks); + printk(KERN_INFO "Number of logical nodes in system = %d\n", + num_online_nodes()); + printk(KERN_INFO "Number of memory chunks in system = %d\n", + num_node_memblks); - if (!slit_table) return; + if (!slit_table) + return; memset(numa_slit, -1, sizeof(numa_slit)); - for (i=0; ilocalities; i++) { + for (i = 0; i < slit_table->localities; i++) { if (!pxm_bit_test(i)) continue; - node_from = pxm_to_nid_map[i]; - for (j=0; jlocalities; j++) { + node_from = pxm_to_node(i); + for (j = 0; j < slit_table->localities; j++) { if (!pxm_bit_test(j)) continue; - node_to = pxm_to_nid_map[j]; + node_to = pxm_to_node(j); node_distance(node_from, node_to) = - slit_table->entry[i*slit_table->localities + j]; + slit_table->entry[i * slit_table->localities + j]; } } @@ -504,75 +577,77 @@ acpi_numa_arch_fixup (void) printk("ACPI 2.0 SLIT locality table:\n"); for_each_online_node(i) { for_each_online_node(j) - printk("%03d ", node_distance(i,j)); + printk("%03d ", node_distance(i, j)); printk("\n"); } #endif } -#endif /* CONFIG_ACPI_NUMA */ +#endif /* CONFIG_ACPI_NUMA */ -unsigned int -acpi_register_gsi (u32 gsi, int edge_level, int active_high_low) +/* + * success: return IRQ number (>=0) + * failure: return < 0 + */ +int acpi_register_gsi(u32 gsi, int triggering, int polarity) { + if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) + return gsi; + if (has_8259 && gsi < 16) return isa_irq_to_vector(gsi); return iosapic_register_intr(gsi, - (active_high_low == ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, - (edge_level == ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : IOSAPIC_LEVEL); + (polarity == + ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : + IOSAPIC_POL_LOW, + (triggering == + ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : + IOSAPIC_LEVEL); } + EXPORT_SYMBOL(acpi_register_gsi); -#ifdef CONFIG_ACPI_DEALLOCATE_IRQ -void -acpi_unregister_gsi (u32 gsi) +void acpi_unregister_gsi(u32 gsi) { + if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) + return; + iosapic_unregister_intr(gsi); } + EXPORT_SYMBOL(acpi_unregister_gsi); -#endif /* CONFIG_ACPI_DEALLOCATE_IRQ */ -static int __init -acpi_parse_fadt (unsigned long phys_addr, unsigned long size) +static int __init acpi_parse_fadt(unsigned long phys_addr, unsigned long size) { struct acpi_table_header *fadt_header; - struct fadt_descriptor_rev2 *fadt; + struct fadt_descriptor *fadt; if (!phys_addr || !size) return -EINVAL; - fadt_header = (struct acpi_table_header *) __va(phys_addr); + fadt_header = (struct acpi_table_header *)__va(phys_addr); if (fadt_header->revision != 3) - return -ENODEV; /* Only deal with ACPI 2.0 FADT */ + 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; + fadt = (struct fadt_descriptor *)fadt_header; acpi_register_gsi(fadt->sci_int, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW); return 0; } - -unsigned long __init -acpi_find_rsdp (void) +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"); + if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) + rsdp_phys = efi.acpi20; + else if (efi.acpi != EFI_INVALID_TABLE_ADDR) + printk(KERN_WARNING PREFIX + "v1.0/r0.71 tables no longer supported\n"); return rsdp_phys; } - -int __init -acpi_boot_init (void) +int __init acpi_boot_init(void) { /* @@ -590,31 +665,43 @@ acpi_boot_init (void) /* 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_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_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) + 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"); + 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_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_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: + skip_madt: /* * FADT says whether a legacy keyboard controller is present. @@ -629,8 +716,9 @@ acpi_boot_init (void) 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_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; @@ -639,19 +727,23 @@ acpi_boot_init (void) 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]; + 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 +#ifdef CONFIG_ACPI_NUMA + build_cpu_to_node_map(); #endif /* Make boot-up look pretty */ - printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, total_cpus); + printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, + total_cpus); return 0; } -int -acpi_gsi_to_irq (u32 gsi, unsigned int *irq) +int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) { int vector; @@ -672,47 +764,99 @@ acpi_gsi_to_irq (u32 gsi, unsigned int *irq) */ #ifdef CONFIG_ACPI_HOTPLUG_CPU static -int -acpi_map_cpu2node(acpi_handle handle, int cpu, long physid) +int acpi_map_cpu2node(acpi_handle handle, int cpu, long physid) { #ifdef CONFIG_ACPI_NUMA - int pxm_id; + int pxm_id; + int nid; pxm_id = acpi_get_pxm(handle); - /* - * Assuming that the container driver would have set the proximity - * domain and would have initialized pxm_to_nid_map[pxm_id] && pxm_flag + * We don't have cpu-only-node hotadd. But if the system equips + * SRAT table, pxm is already found and node is ready. + * So, just pxm_to_nid(pxm) is OK. + * This code here is for the system which doesn't have full SRAT + * table for possible cpus. */ - node_cpuid[cpu].nid = (pxm_id < 0) ? 0: - pxm_to_nid_map[pxm_id]; - - node_cpuid[cpu].phys_id = physid; + nid = acpi_map_pxm_to_node(pxm_id); + node_cpuid[cpu].phys_id = physid; + node_cpuid[cpu].nid = nid; #endif - return(0); + return (0); +} + +int additional_cpus __initdata = -1; + +static __init int setup_additional_cpus(char *s) +{ + if (s) + additional_cpus = simple_strtol(s, NULL, 0); + + return 0; } +early_param("additional_cpus", setup_additional_cpus); + +/* + * cpu_possible_map should be static, it cannot change as cpu's + * are onlined, or offlined. The reason is per-cpu data-structures + * are allocated by some modules at init time, and dont expect to + * do this dynamically on cpu arrival/departure. + * cpu_present_map on the other hand can change dynamically. + * In case when cpu_hotplug is not compiled, then we resort to current + * behaviour, which is cpu_possible == cpu_present. + * - Ashok Raj + * + * Three ways to find out the number of additional hotplug CPUs: + * - If the BIOS specified disabled CPUs in ACPI/mptables use that. + * - The user can overwrite it with additional_cpus=NUM + * - Otherwise don't reserve additional CPUs. + */ +__init void prefill_possible_map(void) +{ + int i; + int possible, disabled_cpus; + + disabled_cpus = total_cpus - available_cpus; + + if (additional_cpus == -1) { + if (disabled_cpus > 0) + additional_cpus = disabled_cpus; + else + additional_cpus = 0; + } + + possible = available_cpus + additional_cpus; + + if (possible > NR_CPUS) + possible = NR_CPUS; + + printk(KERN_INFO "SMP: Allowing %d CPUs, %d hotplug CPUs\n", + possible, max((possible - available_cpus), 0)); + + for (i = 0; i < possible; i++) + cpu_set(i, cpu_possible_map); +} -int -acpi_map_lsapic(acpi_handle handle, int *pcpu) +int acpi_map_lsapic(acpi_handle handle, int *pcpu) { - struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; union acpi_object *obj; struct acpi_table_lsapic *lsapic; cpumask_t tmp_map; long physid; int cpu; - + if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) return -EINVAL; - if (!buffer.length || !buffer.pointer) + if (!buffer.length || !buffer.pointer) return -EINVAL; - + obj = buffer.pointer; if (obj->type != ACPI_TYPE_BUFFER || obj->buffer.length < sizeof(*lsapic)) { - acpi_os_free(buffer.pointer); + kfree(buffer.pointer); return -EINVAL; } @@ -720,62 +864,61 @@ acpi_map_lsapic(acpi_handle handle, int *pcpu) if ((lsapic->header.type != ACPI_MADT_LSAPIC) || (!lsapic->flags.enabled)) { - acpi_os_free(buffer.pointer); + kfree(buffer.pointer); return -EINVAL; } - physid = ((lsapic->id <<8) | (lsapic->eid)); + physid = ((lsapic->id << 8) | (lsapic->eid)); - acpi_os_free(buffer.pointer); + kfree(buffer.pointer); buffer.length = ACPI_ALLOCATE_BUFFER; buffer.pointer = NULL; cpus_complement(tmp_map, cpu_present_map); cpu = first_cpu(tmp_map); - if(cpu >= NR_CPUS) + if (cpu >= NR_CPUS) return -EINVAL; acpi_map_cpu2node(handle, cpu, physid); - cpu_set(cpu, cpu_present_map); + cpu_set(cpu, cpu_present_map); ia64_cpu_to_sapicid[cpu] = physid; ia64_acpiid_to_sapicid[lsapic->acpi_id] = ia64_cpu_to_sapicid[cpu]; *pcpu = cpu; - return(0); + return (0); } -EXPORT_SYMBOL(acpi_map_lsapic); +EXPORT_SYMBOL(acpi_map_lsapic); -int -acpi_unmap_lsapic(int cpu) +int acpi_unmap_lsapic(int cpu) { int i; - for (i=0; itype != ACPI_TYPE_BUFFER || obj->buffer.length < sizeof(*iosapic)) { - acpi_os_free(buffer.pointer); + kfree(buffer.pointer); return AE_OK; } iosapic = (struct acpi_table_iosapic *)obj->buffer.pointer; if (iosapic->header.type != ACPI_MADT_IOSAPIC) { - acpi_os_free(buffer.pointer); + kfree(buffer.pointer); return AE_OK; } gsi_base = iosapic->global_irq_base; - acpi_os_free(buffer.pointer); + kfree(buffer.pointer); /* * OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell @@ -814,7 +957,7 @@ acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret) if (pxm < 0) return AE_OK; - node = pxm_to_nid_map[pxm]; + node = pxm_to_node(pxm); if (node >= MAX_NUMNODES || !node_online(node) || cpus_empty(node_to_cpumask(node))) @@ -824,5 +967,38 @@ acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret) map_iosapic_to_node(gsi_base, node); return AE_OK; } -#endif /* CONFIG_NUMA */ -#endif /* CONFIG_ACPI_BOOT */ + +static int __init +acpi_map_iosapics (void) +{ + acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL); + return 0; +} + +fs_initcall(acpi_map_iosapics); +#endif /* CONFIG_ACPI_NUMA */ + +int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) +{ + int err; + + if ((err = iosapic_init(phys_addr, gsi_base))) + return err; + +#ifdef CONFIG_ACPI_NUMA + acpi_map_iosapic(handle, 0, NULL, NULL); +#endif /* CONFIG_ACPI_NUMA */ + + return 0; +} + +EXPORT_SYMBOL(acpi_register_ioapic); + +int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) +{ + return iosapic_remove(gsi_base); +} + +EXPORT_SYMBOL(acpi_unregister_ioapic); + +#endif /* CONFIG_ACPI */