/* * Written by: Patricia Gaughen, IBM Corporation * * Copyright (C) 2002, IBM Corp. * * 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 #define MB_TO_PAGES(addr) ((addr) << (20 - PAGE_SHIFT)) /* * 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) { int node; struct eachquadmem *eq; struct sys_cfg_data *scd = (struct sys_cfg_data *)__va(SYS_CFG_DATA_PRIV_ADDR); nodes_clear(node_online_map); for_each_node(node) { if (scd->quads_present31_0 & (1 << node)) { node_set_online(node); eq = &scd->eq[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]); } } } 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; } 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_config_translation { 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; }; /* x86_quirks member */ static int mpc_record; static struct mpc_config_translation *translation_table[MAX_MPC_ENTRY] __cpuinitdata; 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_config_processor *m) { int quad = translation_table[mpc_record]->trans_quad; int logical_apicid = generate_logical_apicid(quad, m->mpc_apicid); printk(KERN_DEBUG "Processor #%d %u:%u APIC version %d (quad %d, apic %d)\n", m->mpc_apicid, (m->mpc_cpufeature & CPU_FAMILY_MASK) >> 8, (m->mpc_cpufeature & CPU_MODEL_MASK) >> 4, m->mpc_apicver, quad, logical_apicid); return logical_apicid; } int mp_bus_id_to_node[MAX_MP_BUSSES]; int mp_bus_id_to_local[MAX_MP_BUSSES]; /* 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->mpc_busid] = quad; mp_bus_id_to_local[m->mpc_busid] = local; printk(KERN_INFO "Bus #%d is %s (node %d)\n", m->mpc_busid, name, quad); } int quad_local_to_mp_bus_id [NR_CPUS/4][4]; /* 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->mpc_busid; } static void __init MP_translation_info(struct mpc_config_translation *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 mp_config_oemtable *oemtable, unsigned short oemsize) { 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->oem_signature, MPC_OEM_SIGNATURE, 4)) { printk(KERN_WARNING "SMP mpc oemtable: bad signature [%c%c%c%c]!\n", oemtable->oem_signature[0], oemtable->oem_signature[1], oemtable->oem_signature[2], oemtable->oem_signature[3]); return; } if (mpf_checksum((unsigned char *)oemtable, oemtable->oem_length)) { printk(KERN_WARNING "SMP oem mptable: checksum error!\n"); return; } while (count < oemtable->oem_length) { switch (*oemptr) { case MP_TRANSLATION: { struct mpc_config_translation *m = (struct mpc_config_translation *)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 int __init numaq_setup_ioapic_ids(void) { /* so can skip it */ return 1; } static int __init numaq_update_genapic(void) { genapic->wakeup_cpu = wakeup_secondary_cpu_via_nmi; return 0; } static struct x86_quirks numaq_x86_quirks __initdata = { .arch_pre_time_init = numaq_pre_time_init, .arch_time_init = NULL, .arch_pre_intr_init = NULL, .arch_memory_setup = NULL, .arch_intr_init = NULL, .arch_trap_init = NULL, .mach_get_smp_config = NULL, .mach_find_smp_config = NULL, .mpc_record = &mpc_record, .mpc_apic_id = mpc_apic_id, .mpc_oem_bus_info = mpc_oem_bus_info, .mpc_oem_pci_bus = mpc_oem_pci_bus, .smp_read_mpc_oem = smp_read_mpc_oem, .setup_ioapic_ids = numaq_setup_ioapic_ids, .update_genapic = numaq_update_genapic, }; void numaq_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid) { if (strncmp(oem, "IBM NUMA", 8)) printk("Warning! Not a NUMA-Q system!\n"); else found_numaq = 1; } 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; } int __init get_memcfg_numaq(void) { early_check_numaq(); if (!found_numaq) return 0; smp_dump_qct(); return 1; }