/* * Written by: Patricia Gaughen, IBM Corporation * * Copyright (C) 2002, IBM Corp. * Copyright (C) 2009, Red Hat, Inc., Ingo Molnar * * All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or * NON INFRINGEMENT. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * Send feedback to */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define MB_TO_PAGES(addr) ((addr) << (20 - PAGE_SHIFT)) int found_numaq; /* * Have to match translation table entries to main table entries by counter * hence the mpc_record variable .... can't see a less disgusting way of * doing this .... */ struct mpc_trans { unsigned char mpc_type; unsigned char trans_len; unsigned char trans_type; unsigned char trans_quad; unsigned char trans_global; unsigned char trans_local; unsigned short trans_reserved; }; static int mpc_record; static struct mpc_trans *translation_table[MAX_MPC_ENTRY]; int mp_bus_id_to_node[MAX_MP_BUSSES]; int mp_bus_id_to_local[MAX_MP_BUSSES]; int quad_local_to_mp_bus_id[NR_CPUS/4][4]; static inline void numaq_register_node(int node, struct sys_cfg_data *scd) { struct eachquadmem *eq = scd->eq + node; node_set_online(node); /* Convert to pages */ node_start_pfn[node] = MB_TO_PAGES(eq->hi_shrd_mem_start - eq->priv_mem_size); node_end_pfn[node] = MB_TO_PAGES(eq->hi_shrd_mem_start + eq->hi_shrd_mem_size); e820_register_active_regions(node, node_start_pfn[node], node_end_pfn[node]); memory_present(node, node_start_pfn[node], node_end_pfn[node]); node_remap_size[node] = node_memmap_size_bytes(node, node_start_pfn[node], node_end_pfn[node]); } /* * Function: smp_dump_qct() * * Description: gets memory layout from the quad config table. This * function also updates node_online_map with the nodes (quads) present. */ static void __init smp_dump_qct(void) { struct sys_cfg_data *scd; int node; scd = (void *)__va(SYS_CFG_DATA_PRIV_ADDR); nodes_clear(node_online_map); for_each_node(node) { if (scd->quads_present31_0 & (1 << node)) numaq_register_node(node, scd); } } void __cpuinit numaq_tsc_disable(void) { if (!found_numaq) return; if (num_online_nodes() > 1) { printk(KERN_DEBUG "NUMAQ: disabling TSC\n"); setup_clear_cpu_cap(X86_FEATURE_TSC); } } static int __init numaq_pre_time_init(void) { numaq_tsc_disable(); return 0; } static inline int generate_logical_apicid(int quad, int phys_apicid) { return (quad << 4) + (phys_apicid ? phys_apicid << 1 : 1); } /* x86_quirks member */ static int mpc_apic_id(struct mpc_cpu *m) { int quad = translation_table[mpc_record]->trans_quad; int logical_apicid = generate_logical_apicid(quad, m->apicid); printk(KERN_DEBUG "Processor #%d %u:%u APIC version %d (quad %d, apic %d)\n", m->apicid, (m->cpufeature & CPU_FAMILY_MASK) >> 8, (m->cpufeature & CPU_MODEL_MASK) >> 4, m->apicver, quad, logical_apicid); return logical_apicid; } /* x86_quirks member */ static void mpc_oem_bus_info(struct mpc_bus *m, char *name) { int quad = translation_table[mpc_record]->trans_quad; int local = translation_table[mpc_record]->trans_local; mp_bus_id_to_node[m->busid] = quad; mp_bus_id_to_local[m->busid] = local; printk(KERN_INFO "Bus #%d is %s (node %d)\n", m->busid, name, quad); } /* x86_quirks member */ static void mpc_oem_pci_bus(struct mpc_bus *m) { int quad = translation_table[mpc_record]->trans_quad; int local = translation_table[mpc_record]->trans_local; quad_local_to_mp_bus_id[quad][local] = m->busid; } /* * Called from mpparse code. * mode = 0: prescan * mode = 1: one mpc entry scanned */ static void numaq_mpc_record(unsigned int mode) { if (!mode) mpc_record = 0; else mpc_record++; } static void __init MP_translation_info(struct mpc_trans *m) { printk(KERN_INFO "Translation: record %d, type %d, quad %d, global %d, local %d\n", mpc_record, m->trans_type, m->trans_quad, m->trans_global, m->trans_local); if (mpc_record >= MAX_MPC_ENTRY) printk(KERN_ERR "MAX_MPC_ENTRY exceeded!\n"); else translation_table[mpc_record] = m; /* stash this for later */ if (m->trans_quad < MAX_NUMNODES && !node_online(m->trans_quad)) node_set_online(m->trans_quad); } static int __init mpf_checksum(unsigned char *mp, int len) { int sum = 0; while (len--) sum += *mp++; return sum & 0xFF; } /* * Read/parse the MPC oem tables */ static void __init smp_read_mpc_oem(struct mpc_table *mpc) { struct mpc_oemtable *oemtable = (void *)(long)mpc->oemptr; int count = sizeof(*oemtable); /* the header size */ unsigned char *oemptr = ((unsigned char *)oemtable) + count; mpc_record = 0; printk(KERN_INFO "Found an OEM MPC table at %8p - parsing it ... \n", oemtable); if (memcmp(oemtable->signature, MPC_OEM_SIGNATURE, 4)) { printk(KERN_WARNING "SMP mpc oemtable: bad signature [%c%c%c%c]!\n", oemtable->signature[0], oemtable->signature[1], oemtable->signature[2], oemtable->signature[3]); return; } if (mpf_checksum((unsigned char *)oemtable, oemtable->length)) { printk(KERN_WARNING "SMP oem mptable: checksum error!\n"); return; } while (count < oemtable->length) { switch (*oemptr) { case MP_TRANSLATION: { struct mpc_trans *m = (void *)oemptr; MP_translation_info(m); oemptr += sizeof(*m); count += sizeof(*m); ++mpc_record; break; } default: printk(KERN_WARNING "Unrecognised OEM table entry type! - %d\n", (int)*oemptr); return; } } } static struct x86_quirks numaq_x86_quirks __initdata = { .arch_pre_time_init = numaq_pre_time_init, .arch_time_init = NULL, }; static __init void early_check_numaq(void) { /* * Find possible boot-time SMP configuration: */ early_find_smp_config(); /* * get boot-time SMP configuration: */ if (smp_found_config) early_get_smp_config(); if (found_numaq) { x86_quirks = &numaq_x86_quirks; x86_init.mpparse.mpc_record = numaq_mpc_record; x86_init.mpparse.setup_ioapic_ids = x86_init_noop; x86_init.mpparse.mpc_apic_id = mpc_apic_id; x86_init.mpparse.smp_read_mpc_oem = smp_read_mpc_oem; x86_init.mpparse.mpc_oem_pci_bus = mpc_oem_pci_bus; x86_init.mpparse.mpc_oem_bus_info = mpc_oem_bus_info; } } int __init get_memcfg_numaq(void) { early_check_numaq(); if (!found_numaq) return 0; smp_dump_qct(); return 1; } #define NUMAQ_APIC_DFR_VALUE (APIC_DFR_CLUSTER) static inline unsigned int numaq_get_apic_id(unsigned long x) { return (x >> 24) & 0x0F; } static inline void numaq_send_IPI_mask(const struct cpumask *mask, int vector) { default_send_IPI_mask_sequence_logical(mask, vector); } static inline void numaq_send_IPI_allbutself(int vector) { default_send_IPI_mask_allbutself_logical(cpu_online_mask, vector); } static inline void numaq_send_IPI_all(int vector) { numaq_send_IPI_mask(cpu_online_mask, vector); } #define NUMAQ_TRAMPOLINE_PHYS_LOW (0x8) #define NUMAQ_TRAMPOLINE_PHYS_HIGH (0xa) /* * Because we use NMIs rather than the INIT-STARTUP sequence to * bootstrap the CPUs, the APIC may be in a weird state. Kick it: */ static inline void numaq_smp_callin_clear_local_apic(void) { clear_local_APIC(); } static inline const struct cpumask *numaq_target_cpus(void) { return cpu_all_mask; } static inline unsigned long numaq_check_apicid_used(physid_mask_t bitmap, int apicid) { return physid_isset(apicid, bitmap); } static inline unsigned long numaq_check_apicid_present(int bit) { return physid_isset(bit, phys_cpu_present_map); } static inline int numaq_apic_id_registered(void) { return 1; } static inline void numaq_init_apic_ldr(void) { /* Already done in NUMA-Q firmware */ } static inline void numaq_setup_apic_routing(void) { printk(KERN_INFO "Enabling APIC mode: NUMA-Q. Using %d I/O APICs\n", nr_ioapics); } /* * Skip adding the timer int on secondary nodes, which causes * a small but painful rift in the time-space continuum. */ static inline int numaq_multi_timer_check(int apic, int irq) { return apic != 0 && irq == 0; } static inline physid_mask_t numaq_ioapic_phys_id_map(physid_mask_t phys_map) { /* We don't have a good way to do this yet - hack */ return physids_promote(0xFUL); } static inline int numaq_cpu_to_logical_apicid(int cpu) { if (cpu >= nr_cpu_ids) return BAD_APICID; return cpu_2_logical_apicid[cpu]; } /* * Supporting over 60 cpus on NUMA-Q requires a locality-dependent * cpu to APIC ID relation to properly interact with the intelligent * mode of the cluster controller. */ static inline int numaq_cpu_present_to_apicid(int mps_cpu) { if (mps_cpu < 60) return ((mps_cpu >> 2) << 4) | (1 << (mps_cpu & 0x3)); else return BAD_APICID; } static inline int numaq_apicid_to_node(int logical_apicid) { return logical_apicid >> 4; } static inline physid_mask_t numaq_apicid_to_cpu_present(int logical_apicid) { int node = numaq_apicid_to_node(logical_apicid); int cpu = __ffs(logical_apicid & 0xf); return physid_mask_of_physid(cpu + 4*node); } /* Where the IO area was mapped on multiquad, always 0 otherwise */ void *xquad_portio; static inline int numaq_check_phys_apicid_present(int boot_cpu_physical_apicid) { return 1; } /* * We use physical apicids here, not logical, so just return the default * physical broadcast to stop people from breaking us */ static unsigned int numaq_cpu_mask_to_apicid(const struct cpumask *cpumask) { return 0x0F; } static inline unsigned int numaq_cpu_mask_to_apicid_and(const struct cpumask *cpumask, const struct cpumask *andmask) { return 0x0F; } /* No NUMA-Q box has a HT CPU, but it can't hurt to use the default code. */ static inline int numaq_phys_pkg_id(int cpuid_apic, int index_msb) { return cpuid_apic >> index_msb; } static int numaq_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid) { if (strncmp(oem, "IBM NUMA", 8)) printk(KERN_ERR "Warning! Not a NUMA-Q system!\n"); else found_numaq = 1; return found_numaq; } static int probe_numaq(void) { /* already know from get_memcfg_numaq() */ return found_numaq; } static void numaq_vector_allocation_domain(int cpu, struct cpumask *retmask) { /* Careful. Some cpus do not strictly honor the set of cpus * specified in the interrupt destination when using lowest * priority interrupt delivery mode. * * In particular there was a hyperthreading cpu observed to * deliver interrupts to the wrong hyperthread when only one * hyperthread was specified in the interrupt desitination. */ cpumask_clear(retmask); cpumask_bits(retmask)[0] = APIC_ALL_CPUS; } static void numaq_setup_portio_remap(void) { int num_quads = num_online_nodes(); if (num_quads <= 1) return; printk(KERN_INFO "Remapping cross-quad port I/O for %d quads\n", num_quads); xquad_portio = ioremap(XQUAD_PORTIO_BASE, num_quads*XQUAD_PORTIO_QUAD); printk(KERN_INFO "xquad_portio vaddr 0x%08lx, len %08lx\n", (u_long) xquad_portio, (u_long) num_quads*XQUAD_PORTIO_QUAD); } /* Use __refdata to keep false positive warning calm. */ struct apic __refdata apic_numaq = { .name = "NUMAQ", .probe = probe_numaq, .acpi_madt_oem_check = NULL, .apic_id_registered = numaq_apic_id_registered, .irq_delivery_mode = dest_LowestPrio, /* physical delivery on LOCAL quad: */ .irq_dest_mode = 0, .target_cpus = numaq_target_cpus, .disable_esr = 1, .dest_logical = APIC_DEST_LOGICAL, .check_apicid_used = numaq_check_apicid_used, .check_apicid_present = numaq_check_apicid_present, .vector_allocation_domain = numaq_vector_allocation_domain, .init_apic_ldr = numaq_init_apic_ldr, .ioapic_phys_id_map = numaq_ioapic_phys_id_map, .setup_apic_routing = numaq_setup_apic_routing, .multi_timer_check = numaq_multi_timer_check, .apicid_to_node = numaq_apicid_to_node, .cpu_to_logical_apicid = numaq_cpu_to_logical_apicid, .cpu_present_to_apicid = numaq_cpu_present_to_apicid, .apicid_to_cpu_present = numaq_apicid_to_cpu_present, .setup_portio_remap = numaq_setup_portio_remap, .check_phys_apicid_present = numaq_check_phys_apicid_present, .enable_apic_mode = NULL, .phys_pkg_id = numaq_phys_pkg_id, .mps_oem_check = numaq_mps_oem_check, .get_apic_id = numaq_get_apic_id, .set_apic_id = NULL, .apic_id_mask = 0x0F << 24, .cpu_mask_to_apicid = numaq_cpu_mask_to_apicid, .cpu_mask_to_apicid_and = numaq_cpu_mask_to_apicid_and, .send_IPI_mask = numaq_send_IPI_mask, .send_IPI_mask_allbutself = NULL, .send_IPI_allbutself = numaq_send_IPI_allbutself, .send_IPI_all = numaq_send_IPI_all, .send_IPI_self = default_send_IPI_self, .wakeup_secondary_cpu = wakeup_secondary_cpu_via_nmi, .trampoline_phys_low = NUMAQ_TRAMPOLINE_PHYS_LOW, .trampoline_phys_high = NUMAQ_TRAMPOLINE_PHYS_HIGH, /* We don't do anything here because we use NMI's to boot instead */ .wait_for_init_deassert = NULL, .smp_callin_clear_local_apic = numaq_smp_callin_clear_local_apic, .inquire_remote_apic = NULL, .read = native_apic_mem_read, .write = native_apic_mem_write, .icr_read = native_apic_icr_read, .icr_write = native_apic_icr_write, .wait_icr_idle = native_apic_wait_icr_idle, .safe_wait_icr_idle = native_safe_apic_wait_icr_idle, };