diff options
Diffstat (limited to 'arch/ia64/kernel/acpi.c')
| -rw-r--r-- | arch/ia64/kernel/acpi.c | 610 |
1 files changed, 342 insertions, 268 deletions
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c index 9ad94ddf668..615ef81def4 100644 --- a/arch/ia64/kernel/acpi.c +++ b/arch/ia64/kernel/acpi.c @@ -32,7 +32,6 @@ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ -#include <linux/config.h> #include <linux/module.h> #include <linux/init.h> #include <linux/kernel.h> @@ -45,46 +44,47 @@ #include <linux/efi.h> #include <linux/mmzone.h> #include <linux/nodemask.h> +#include <linux/slab.h> +#include <acpi/processor.h> #include <asm/io.h> #include <asm/iosapic.h> #include <asm/machvec.h> #include <asm/page.h> -#include <asm/system.h> #include <asm/numa.h> #include <asm/sal.h> #include <asm/cyclone.h> -#define BAD_MADT_ENTRY(entry, end) ( \ - (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ - ((acpi_table_entry_header *)entry)->length != sizeof(*entry)) - #define PREFIX "ACPI: " -void (*pm_idle) (void); -EXPORT_SYMBOL(pm_idle); -void (*pm_power_off) (void); -EXPORT_SYMBOL(pm_power_off); - -unsigned char acpi_kbd_controller_present = 1; -unsigned char acpi_legacy_devices; - -static unsigned int __initdata acpi_madt_rev; - +int acpi_lapic; 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 }; +unsigned long acpi_wakeup_address = 0; -EXPORT_SYMBOL(ia64_acpiid_to_sapicid); +#ifdef CONFIG_IA64_GENERIC +static unsigned long __init acpi_find_rsdp(void) +{ + unsigned long rsdp_phys = 0; + + 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; +} -const char *acpi_get_sysname(void) +const char __init * +acpi_get_sysname(void) { -#ifdef CONFIG_IA64_GENERIC unsigned long rsdp_phys; - struct acpi20_table_rsdp *rsdp; + struct acpi_table_rsdp *rsdp; struct acpi_table_xsdt *xsdt; struct acpi_table_header *hdr; +#ifdef CONFIG_INTEL_IOMMU + u64 i, nentries; +#endif rsdp_phys = acpi_find_rsdp(); if (!rsdp_phys) { @@ -93,16 +93,16 @@ const char *acpi_get_sysname(void) return "dig"; } - rsdp = (struct acpi20_table_rsdp *)__va(rsdp_phys); - if (strncmp(rsdp->signature, RSDP_SIG, sizeof(RSDP_SIG) - 1)) { + rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys); + if (strncmp(rsdp->signature, ACPI_SIG_RSDP, sizeof(ACPI_SIG_RSDP) - 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); + xsdt = (struct acpi_table_xsdt *)__va(rsdp->xsdt_physical_address); hdr = &xsdt->header; - if (strncmp(hdr->signature, XSDT_SIG, sizeof(XSDT_SIG) - 1)) { + if (strncmp(hdr->signature, ACPI_SIG_XSDT, sizeof(ACPI_SIG_XSDT) - 1)) { printk(KERN_ERR "ACPI 2.0 XSDT signature incorrect, default to \"dig\"\n"); return "dig"; @@ -111,28 +111,27 @@ const char *acpi_get_sysname(void) if (!strcmp(hdr->oem_id, "HP")) { return "hpzx1"; } else if (!strcmp(hdr->oem_id, "SGI")) { - return "sn2"; + if (!strcmp(hdr->oem_table_id + 4, "UV")) + return "uv"; + else + return "sn2"; } - return "dig"; -#else -# if defined (CONFIG_IA64_HP_SIM) - return "hpsim"; -# elif defined (CONFIG_IA64_HP_ZX1) - return "hpzx1"; -# elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB) - return "hpzx1_swiotlb"; -# elif defined (CONFIG_IA64_SGI_SN2) - return "sn2"; -# elif defined (CONFIG_IA64_DIG) - return "dig"; -# else -# error Unknown platform. Fix acpi.c. -# endif +#ifdef CONFIG_INTEL_IOMMU + /* Look for Intel IOMMU */ + nentries = (hdr->length - sizeof(*hdr)) / + sizeof(xsdt->table_offset_entry[0]); + for (i = 0; i < nentries; i++) { + hdr = __va(xsdt->table_offset_entry[i]); + if (strncmp(hdr->signature, ACPI_SIG_DMAR, + sizeof(ACPI_SIG_DMAR) - 1) == 0) + return "dig_vtd"; + } #endif -} -#ifdef CONFIG_ACPI + return "dig"; +} +#endif /* CONFIG_IA64_GENERIC */ #define ACPI_MAX_PLATFORM_INTERRUPTS 256 @@ -160,27 +159,30 @@ int acpi_request_vector(u32 int_type) return vector; } -char *__acpi_map_table(unsigned long phys_addr, unsigned long size) +char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size) { return __va(phys_addr); } +void __init __acpi_unmap_table(char *map, 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 __init -acpi_parse_lapic_addr_ovr(acpi_table_entry_header * header, +acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, const unsigned long end) { - struct acpi_table_lapic_addr_ovr *lapic; + struct acpi_madt_local_apic_override *lapic; - lapic = (struct acpi_table_lapic_addr_ovr *)header; + lapic = (struct acpi_madt_local_apic_override *)header; if (BAD_MADT_ENTRY(lapic, end)) return -EINVAL; @@ -193,22 +195,19 @@ acpi_parse_lapic_addr_ovr(acpi_table_entry_header * header, } static int __init -acpi_parse_lsapic(acpi_table_entry_header * header, const unsigned long end) +acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end) { - struct acpi_table_lsapic *lsapic; + struct acpi_madt_local_sapic *lsapic; - lsapic = (struct acpi_table_lsapic *)header; + lsapic = (struct acpi_madt_local_sapic *)header; - if (BAD_MADT_ENTRY(lsapic, end)) - return -EINVAL; + /*Skip BAD_MADT_ENTRY check, as lsapic size could vary */ - if (lsapic->flags.enabled) { + if (lsapic->lapic_flags & ACPI_MADT_ENABLED) { #ifdef CONFIG_SMP smp_boot_data.cpu_phys_id[available_cpus] = (lsapic->id << 8) | lsapic->eid; #endif - ia64_acpiid_to_sapicid[lsapic->acpi_id] = - (lsapic->id << 8) | lsapic->eid; ++available_cpus; } @@ -217,11 +216,11 @@ acpi_parse_lsapic(acpi_table_entry_header * header, const unsigned long end) } static int __init -acpi_parse_lapic_nmi(acpi_table_entry_header * header, const unsigned long end) +acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) { - struct acpi_table_lapic_nmi *lacpi_nmi; + struct acpi_madt_local_apic_nmi *lacpi_nmi; - lacpi_nmi = (struct acpi_table_lapic_nmi *)header; + lacpi_nmi = (struct acpi_madt_local_apic_nmi *)header; if (BAD_MADT_ENTRY(lacpi_nmi, end)) return -EINVAL; @@ -231,11 +230,11 @@ acpi_parse_lapic_nmi(acpi_table_entry_header * header, const unsigned long end) } static int __init -acpi_parse_iosapic(acpi_table_entry_header * header, const unsigned long end) +acpi_parse_iosapic(struct acpi_subtable_header * header, const unsigned long end) { - struct acpi_table_iosapic *iosapic; + struct acpi_madt_io_sapic *iosapic; - iosapic = (struct acpi_table_iosapic *)header; + iosapic = (struct acpi_madt_io_sapic *)header; if (BAD_MADT_ENTRY(iosapic, end)) return -EINVAL; @@ -243,14 +242,16 @@ acpi_parse_iosapic(acpi_table_entry_header * header, const unsigned long end) 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, +acpi_parse_plat_int_src(struct acpi_subtable_header * header, const unsigned long end) { - struct acpi_table_plat_int_src *plintsrc; + struct acpi_madt_interrupt_source *plintsrc; int vector; - plintsrc = (struct acpi_table_plat_int_src *)header; + plintsrc = (struct acpi_madt_interrupt_source *)header; if (BAD_MADT_ENTRY(plintsrc, end)) return -EINVAL; @@ -261,19 +262,19 @@ acpi_parse_plat_int_src(acpi_table_entry_header * header, */ vector = iosapic_register_platform_intr(plintsrc->type, plintsrc->global_irq, - plintsrc->iosapic_vector, + plintsrc->io_sapic_vector, plintsrc->eid, plintsrc->id, - (plintsrc->flags.polarity == - 1) ? IOSAPIC_POL_HIGH : - IOSAPIC_POL_LOW, - (plintsrc->flags.trigger == - 1) ? IOSAPIC_EDGE : - IOSAPIC_LEVEL); + ((plintsrc->inti_flags & ACPI_MADT_POLARITY_MASK) == + ACPI_MADT_POLARITY_ACTIVE_HIGH) ? + IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, + ((plintsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) == + ACPI_MADT_TRIGGER_EDGE) ? + IOSAPIC_EDGE : IOSAPIC_LEVEL); platform_intr_list[plintsrc->type] = vector; if (acpi_madt_rev > 1) { - acpi_cpei_override = plintsrc->plint_flags.cpei_override_flag; + acpi_cpei_override = plintsrc->flags & ACPI_MADT_CPEI_OVERRIDE; } /* @@ -284,19 +285,24 @@ acpi_parse_plat_int_src(acpi_table_entry_header * header, 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 && !acpi_cpei_override) - return 0; - else - return 1; + 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) @@ -315,6 +321,7 @@ void set_cpei_target_cpu(unsigned int cpu) { acpi_cpei_phys_cpuid = cpu_physical_id(cpu); } +#endif unsigned int get_cpei_target_cpu(void) { @@ -322,30 +329,32 @@ unsigned int get_cpei_target_cpu(void) } static int __init -acpi_parse_int_src_ovr(acpi_table_entry_header * header, +acpi_parse_int_src_ovr(struct acpi_subtable_header * header, const unsigned long end) { - struct acpi_table_int_src_ovr *p; + struct acpi_madt_interrupt_override *p; - p = (struct acpi_table_int_src_ovr *)header; + p = (struct acpi_madt_interrupt_override *)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); + iosapic_override_isa_irq(p->source_irq, p->global_irq, + ((p->inti_flags & ACPI_MADT_POLARITY_MASK) == + ACPI_MADT_POLARITY_ACTIVE_LOW) ? + IOSAPIC_POL_LOW : IOSAPIC_POL_HIGH, + ((p->inti_flags & ACPI_MADT_TRIGGER_MASK) == + ACPI_MADT_TRIGGER_LEVEL) ? + IOSAPIC_LEVEL : IOSAPIC_EDGE); return 0; } static int __init -acpi_parse_nmi_src(acpi_table_entry_header * header, const unsigned long end) +acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) { - struct acpi_table_nmi_src *nmi_src; + struct acpi_madt_nmi_source *nmi_src; - nmi_src = (struct acpi_table_nmi_src *)header; + nmi_src = (struct acpi_madt_nmi_source *)header; if (BAD_MADT_ENTRY(nmi_src, end)) return -EINVAL; @@ -369,12 +378,12 @@ static void __init 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(struct acpi_table_header *table) { - if (!phys_addr || !size) + if (!table) return -EINVAL; - acpi_madt = (struct acpi_table_madt *)__va(phys_addr); + acpi_madt = (struct acpi_table_madt *)table; acpi_madt_rev = acpi_madt->header.revision; @@ -382,14 +391,14 @@ static int __init acpi_parse_madt(unsigned long phys_addr, unsigned long size) #ifdef CONFIG_ITANIUM has_8259 = 1; /* Firmware on old Itanium systems is broken */ #else - has_8259 = acpi_madt->flags.pcat_compat; + has_8259 = acpi_madt->flags & ACPI_MADT_PCAT_COMPAT; #endif iosapic_system_init(has_8259); /* Get base address of IPI Message Block */ - if (acpi_madt->lapic_address) - ipi_base_addr = ioremap(acpi_madt->lapic_address, 0); + if (acpi_madt->address) + ipi_base_addr = ioremap(acpi_madt->address, 0); printk(KERN_INFO PREFIX "Local APIC address %p\n", ipi_base_addr); @@ -406,13 +415,34 @@ static int __init acpi_parse_madt(unsigned long phys_addr, unsigned long size) #define PXM_FLAG_LEN ((MAX_PXM_DOMAINS + 1)/32) static int __initdata srat_num_cpus; /* number of cpus */ -static u32 __devinitdata pxm_flag[PXM_FLAG_LEN]; +static u32 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; +cpumask_t early_cpu_possible_map = CPU_MASK_NONE; + +static int __init +get_processor_proximity_domain(struct acpi_srat_cpu_affinity *pa) +{ + int pxm; + + pxm = pa->proximity_domain_lo; + if (ia64_platform_is("sn2") || acpi_srat_revision >= 2) + pxm += pa->proximity_domain_hi[0] << 8; + return pxm; +} + +static int __init +get_memory_proximity_domain(struct acpi_srat_mem_affinity *ma) +{ + int pxm; + + pxm = ma->proximity_domain; + if (!ia64_platform_is("sn2") && acpi_srat_revision <= 1) + pxm &= 0xff; + + return pxm; +} /* * ACPI 2.0 SLIT (System Locality Information Table) @@ -423,48 +453,59 @@ 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->locality_count * slit->locality_count; if (slit->header.length != len) { printk(KERN_ERR "ACPI 2.0 SLIT: size mismatch: %d expected, %d actual\n", len, slit->header.length); - memset(numa_slit, 10, sizeof(numa_slit)); return; } slit_table = slit; } void __init -acpi_numa_processor_affinity_init(struct acpi_table_processor_affinity *pa) +acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) { + int pxm; + + if (!(pa->flags & ACPI_SRAT_CPU_ENABLED)) + return; + + if (srat_num_cpus >= ARRAY_SIZE(node_cpuid)) { + printk_once(KERN_WARNING + "node_cpuid[%ld] is too small, may not be able to use all cpus\n", + ARRAY_SIZE(node_cpuid)); + 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); + (pa->apic_id << 8) | (pa->local_sapic_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; + cpu_set(srat_num_cpus, early_cpu_possible_map); srat_num_cpus++; } -void __init -acpi_numa_memory_affinity_init(struct acpi_table_memory_affinity *ma) +int __init +acpi_numa_memory_affinity_init(struct acpi_srat_mem_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; - paddr = (paddr << 32) | ma->base_addr_lo; - size = ma->length_hi; - size = (size << 32) | ma->length_lo; + paddr = ma->base_address; + size = ma->length; /* Ignore disabled entries */ - if (!ma->flags.enabled) - return; + if (!(ma->flags & ACPI_SRAT_MEM_ENABLED)) + return -1; /* record this node in proximity bitmap */ pxm_bit_set(pxm); @@ -483,6 +524,7 @@ acpi_numa_memory_affinity_init(struct acpi_table_memory_affinity *ma) p->size = size; p->nid = pxm; num_node_memblks++; + return 0; } void __init acpi_numa_arch_fixup(void) @@ -500,22 +542,17 @@ void __init 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) { @@ -528,27 +565,33 @@ void __init 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]; + for_each_possible_early_cpu(i) + 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); - if (!slit_table) + if (!slit_table) { + for (i = 0; i < MAX_NUMNODES; i++) + for (j = 0; j < MAX_NUMNODES; j++) + node_distance(i, j) = i == j ? LOCAL_DISTANCE : + REMOTE_DISTANCE; return; + } + memset(numa_slit, -1, sizeof(numa_slit)); - for (i = 0; i < slit_table->localities; i++) { + for (i = 0; i < slit_table->locality_count; i++) { if (!pxm_bit_test(i)) continue; - node_from = pxm_to_nid_map[i]; - for (j = 0; j < slit_table->localities; j++) { + node_from = pxm_to_node(i); + for (j = 0; j < slit_table->locality_count; 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->locality_count + j]; } } @@ -567,63 +610,91 @@ void __init acpi_numa_arch_fixup(void) * success: return IRQ number (>=0) * failure: return < 0 */ -int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low) +int acpi_register_gsi(struct device *dev, 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 == + (polarity == ACPI_ACTIVE_HIGH) ? IOSAPIC_POL_HIGH : IOSAPIC_POL_LOW, - (edge_level == + (triggering == ACPI_EDGE_SENSITIVE) ? IOSAPIC_EDGE : IOSAPIC_LEVEL); } - -EXPORT_SYMBOL(acpi_register_gsi); +EXPORT_SYMBOL_GPL(acpi_register_gsi); void acpi_unregister_gsi(u32 gsi) { + if (acpi_irq_model == ACPI_IRQ_MODEL_PLATFORM) + return; + + if (has_8259 && gsi < 16) + return; + iosapic_unregister_intr(gsi); } +EXPORT_SYMBOL_GPL(acpi_unregister_gsi); -EXPORT_SYMBOL(acpi_unregister_gsi); - -static int __init acpi_parse_fadt(unsigned long phys_addr, unsigned long size) +static int __init acpi_parse_fadt(struct acpi_table_header *table) { struct acpi_table_header *fadt_header; - struct fadt_descriptor_rev2 *fadt; + struct acpi_table_fadt *fadt; - if (!phys_addr || !size) + if (!table) return -EINVAL; - fadt_header = (struct acpi_table_header *)__va(phys_addr); + fadt_header = (struct acpi_table_header *)table; if (fadt_header->revision != 3) return -ENODEV; /* Only deal with ACPI 2.0 FADT */ - fadt = (struct fadt_descriptor_rev2 *)fadt_header; - - if (!(fadt->iapc_boot_arch & BAF_8042_KEYBOARD_CONTROLLER)) - acpi_kbd_controller_present = 0; - - if (fadt->iapc_boot_arch & BAF_LEGACY_DEVICES) - acpi_legacy_devices = 1; + fadt = (struct acpi_table_fadt *)fadt_header; - acpi_register_gsi(fadt->sci_int, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW); + acpi_register_gsi(NULL, fadt->sci_interrupt, ACPI_LEVEL_SENSITIVE, + ACPI_ACTIVE_LOW); return 0; } -unsigned long __init acpi_find_rsdp(void) +int __init early_acpi_boot_init(void) { - unsigned long rsdp_phys = 0; + int ret; - 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; + /* + * do a partial walk of MADT to determine how many CPUs + * we have including offline CPUs + */ + if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { + printk(KERN_ERR PREFIX "Can't find MADT\n"); + return 0; + } + + ret = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, + acpi_parse_lsapic, NR_CPUS); + if (ret < 1) + printk(KERN_ERR PREFIX + "Error parsing MADT - no LAPIC entries\n"); + else + acpi_lapic = 1; + +#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; +#endif + /* Make boot-up look pretty */ + printk(KERN_INFO "%d CPUs available, %d CPUs total\n", available_cpus, + total_cpus); + + return 0; } int __init acpi_boot_init(void) @@ -637,7 +708,7 @@ int __init acpi_boot_init(void) * information -- the successor to MPS tables. */ - if (acpi_table_parse(ACPI_APIC, acpi_parse_madt) < 1) { + if (acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { printk(KERN_ERR PREFIX "Can't find MADT\n"); goto skip_madt; } @@ -645,40 +716,37 @@ int __init acpi_boot_init(void) /* Local APIC */ if (acpi_table_parse_madt - (ACPI_MADT_LAPIC_ADDR_OVR, acpi_parse_lapic_addr_ovr, 0) < 0) + (ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, acpi_parse_lapic_addr_ovr, 0) < 0) printk(KERN_ERR PREFIX "Error parsing LAPIC address override entry\n"); - if (acpi_table_parse_madt(ACPI_MADT_LSAPIC, acpi_parse_lsapic, NR_CPUS) - < 1) - printk(KERN_ERR PREFIX - "Error parsing MADT - no LAPIC entries\n"); - - if (acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0) + if (acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_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"); + (ACPI_MADT_TYPE_IO_SAPIC, acpi_parse_iosapic, NR_IOSAPICS) < 1) { + if (!ia64_platform_is("sn2")) + 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_MADT_TYPE_INTERRUPT_SOURCE, 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) + (ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, 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) + if (acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, 0) < 0) printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); skip_madt: @@ -688,21 +756,11 @@ int __init acpi_boot_init(void) * 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) + if (acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt)) printk(KERN_ERR PREFIX "Can't find FADT\n"); +#ifdef CONFIG_ACPI_NUMA #ifdef CONFIG_SMP - if (available_cpus == 0) { - printk(KERN_INFO "ACPI: Found 0 CPUS; assuming 1\n"); - printk(KERN_INFO "CPU 0 (0x%04x)", hard_smp_processor_id()); - smp_boot_data.cpu_phys_id[available_cpus] = - hard_smp_processor_id(); - available_cpus = 1; /* We've got at least one of these, no? */ - } - smp_boot_data.cpu_count = available_cpus; - - smp_build_cpu_map(); -# ifdef CONFIG_ACPI_NUMA if (srat_num_cpus == 0) { int cpu, i = 1; for (cpu = 0; cpu < smp_boot_data.cpu_count; cpu++) @@ -711,121 +769,140 @@ int __init acpi_boot_init(void) node_cpuid[i++].phys_id = smp_boot_data.cpu_phys_id[cpu]; } -# 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); return 0; } int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) { - int vector; + int tmp; if (has_8259 && gsi < 16) *irq = isa_irq_to_vector(gsi); else { - vector = gsi_to_vector(gsi); - if (vector == -1) + tmp = gsi_to_irq(gsi); + if (tmp == -1) return -1; - - *irq = vector; + *irq = tmp; } return 0; } +int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) +{ + if (isa_irq >= 16) + return -1; + *gsi = isa_irq; + return 0; +} + /* * ACPI based hotplug CPU support */ #ifdef CONFIG_ACPI_HOTPLUG_CPU -static -int acpi_map_cpu2node(acpi_handle handle, int cpu, long physid) +static int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) { #ifdef CONFIG_ACPI_NUMA - int pxm_id; - - pxm_id = acpi_get_pxm(handle); - /* - * Assuming that the container driver would have set the proximity - * domain and would have initialized pxm_to_nid_map[pxm_id] && pxm_flag + * 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; + node_cpuid[cpu].nid = acpi_get_node(handle); #endif - return (0); + return 0; } -int acpi_map_lsapic(acpi_handle handle, int *pcpu) +int additional_cpus __initdata = -1; + +static __init int setup_additional_cpus(char *s) { - 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 (s) + additional_cpus = simple_strtol(s, NULL, 0); - if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) - return -EINVAL; + return 0; +} - if (!buffer.length || !buffer.pointer) - return -EINVAL; +early_param("additional_cpus", setup_additional_cpus); - obj = buffer.pointer; - if (obj->type != ACPI_TYPE_BUFFER || - obj->buffer.length < sizeof(*lsapic)) { - acpi_os_free(buffer.pointer); - return -EINVAL; - } +/* + * cpu_possible_mask should be static, it cannot change as CPUs + * 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_mask 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; - lsapic = (struct acpi_table_lsapic *)obj->buffer.pointer; + disabled_cpus = total_cpus - available_cpus; - if ((lsapic->header.type != ACPI_MADT_LSAPIC) || - (!lsapic->flags.enabled)) { - acpi_os_free(buffer.pointer); - return -EINVAL; - } + if (additional_cpus == -1) { + if (disabled_cpus > 0) + additional_cpus = disabled_cpus; + else + additional_cpus = 0; + } - physid = ((lsapic->id << 8) | (lsapic->eid)); + possible = available_cpus + additional_cpus; - acpi_os_free(buffer.pointer); - buffer.length = ACPI_ALLOCATE_BUFFER; - buffer.pointer = NULL; + if (possible > nr_cpu_ids) + possible = nr_cpu_ids; - cpus_complement(tmp_map, cpu_present_map); - cpu = first_cpu(tmp_map); - if (cpu >= 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++) + set_cpu_possible(i, true); +} + +static int _acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu) +{ + cpumask_t tmp_map; + int cpu; + + cpumask_complement(&tmp_map, cpu_present_mask); + cpu = cpumask_first(&tmp_map); + if (cpu >= nr_cpu_ids) return -EINVAL; acpi_map_cpu2node(handle, cpu, physid); - cpu_set(cpu, cpu_present_map); + set_cpu_present(cpu, true); ia64_cpu_to_sapicid[cpu] = physid; - ia64_acpiid_to_sapicid[lsapic->acpi_id] = ia64_cpu_to_sapicid[cpu]; + + acpi_processor_set_pdc(handle); *pcpu = cpu; return (0); } +/* wrapper to silence section mismatch warning */ +int __ref acpi_map_lsapic(acpi_handle handle, int physid, int *pcpu) +{ + return _acpi_map_lsapic(handle, physid, pcpu); +} EXPORT_SYMBOL(acpi_map_lsapic); int acpi_unmap_lsapic(int cpu) { - int i; - - for (i = 0; i < MAX_SAPICS; i++) { - if (ia64_acpiid_to_sapicid[i] == ia64_cpu_to_sapicid[cpu]) { - ia64_acpiid_to_sapicid[i] = -1; - break; - } - } ia64_cpu_to_sapicid[cpu] = -1; - cpu_clear(cpu, cpu_present_map); + set_cpu_present(cpu, false); #ifdef CONFIG_ACPI_NUMA /* NUMA specific cleanup's */ @@ -838,14 +915,14 @@ EXPORT_SYMBOL(acpi_unmap_lsapic); #endif /* CONFIG_ACPI_HOTPLUG_CPU */ #ifdef CONFIG_ACPI_NUMA -static acpi_status __devinit -acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret) +static acpi_status acpi_map_iosapic(acpi_handle handle, u32 depth, + void *context, void **ret) { struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; union acpi_object *obj; - struct acpi_table_iosapic *iosapic; + struct acpi_madt_io_sapic *iosapic; unsigned int gsi_base; - int pxm, node; + int node; /* Only care about objects w/ a method that returns the MADT */ if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) @@ -857,33 +934,25 @@ acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret) obj = buffer.pointer; if (obj->type != 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; + iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer; - if (iosapic->header.type != ACPI_MADT_IOSAPIC) { - acpi_os_free(buffer.pointer); + if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) { + kfree(buffer.pointer); return AE_OK; } gsi_base = iosapic->global_irq_base; - acpi_os_free(buffer.pointer); - - /* - * OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell - * us which node to associate this with. - */ - pxm = acpi_get_pxm(handle); - if (pxm < 0) - return AE_OK; - - node = pxm_to_nid_map[pxm]; + kfree(buffer.pointer); - if (node >= MAX_NUMNODES || !node_online(node) || - cpus_empty(node_to_cpumask(node))) + /* OK, it's an IOSAPIC MADT entry; associate it with a node */ + node = acpi_get_node(handle); + if (node == NUMA_NO_NODE || !node_online(node) || + cpumask_empty(cpumask_of_node(node))) return AE_OK; /* We know a gsi to node mapping! */ @@ -901,7 +970,7 @@ acpi_map_iosapics (void) fs_initcall(acpi_map_iosapics); #endif /* CONFIG_ACPI_NUMA */ -int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) +int __ref acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) { int err; @@ -924,4 +993,9 @@ int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) EXPORT_SYMBOL(acpi_unregister_ioapic); -#endif /* CONFIG_ACPI */ +/* + * acpi_suspend_lowlevel() - save kernel state and suspend. + * + * TBD when when IA64 starts to support suspend... + */ +int acpi_suspend_lowlevel(void) { return 0; } |