2 * Written by: Patricia Gaughen, IBM Corporation
4 * Copyright (C) 2002, IBM Corp.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
16 * NON INFRINGEMENT. See the GNU General Public License for more
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * Send feedback to <gone@us.ibm.com>
27 #include <linux/bootmem.h>
28 #include <linux/mmzone.h>
29 #include <linux/module.h>
30 #include <linux/nodemask.h>
31 #include <asm/numaq.h>
32 #include <asm/topology.h>
33 #include <asm/processor.h>
34 #include <asm/genapic.h>
36 #include <asm/setup.h>
38 #define MB_TO_PAGES(addr) ((addr) << (20 - PAGE_SHIFT))
41 * Function: smp_dump_qct()
43 * Description: gets memory layout from the quad config table. This
44 * function also updates node_online_map with the nodes (quads) present.
46 static void __init smp_dump_qct(void)
49 struct eachquadmem *eq;
50 struct sys_cfg_data *scd =
51 (struct sys_cfg_data *)__va(SYS_CFG_DATA_PRIV_ADDR);
53 nodes_clear(node_online_map);
55 if (scd->quads_present31_0 & (1 << node)) {
56 node_set_online(node);
58 /* Convert to pages */
59 node_start_pfn[node] = MB_TO_PAGES(
60 eq->hi_shrd_mem_start - eq->priv_mem_size);
61 node_end_pfn[node] = MB_TO_PAGES(
62 eq->hi_shrd_mem_start + eq->hi_shrd_mem_size);
64 e820_register_active_regions(node, node_start_pfn[node],
67 node_start_pfn[node], node_end_pfn[node]);
68 node_remap_size[node] = node_memmap_size_bytes(node,
76 void __cpuinit numaq_tsc_disable(void)
81 if (num_online_nodes() > 1) {
82 printk(KERN_DEBUG "NUMAQ: disabling TSC\n");
83 setup_clear_cpu_cap(X86_FEATURE_TSC);
87 static int __init numaq_pre_time_init(void)
95 * Have to match translation table entries to main table entries by counter
96 * hence the mpc_record variable .... can't see a less disgusting way of
99 struct mpc_config_translation {
100 unsigned char mpc_type;
101 unsigned char trans_len;
102 unsigned char trans_type;
103 unsigned char trans_quad;
104 unsigned char trans_global;
105 unsigned char trans_local;
106 unsigned short trans_reserved;
109 /* x86_quirks member */
110 static int mpc_record;
111 static struct mpc_config_translation *translation_table[MAX_MPC_ENTRY]
114 static inline int generate_logical_apicid(int quad, int phys_apicid)
116 return (quad << 4) + (phys_apicid ? phys_apicid << 1 : 1);
119 /* x86_quirks member */
120 static int mpc_apic_id(struct mpc_config_processor *m)
122 int quad = translation_table[mpc_record]->trans_quad;
123 int logical_apicid = generate_logical_apicid(quad, m->mpc_apicid);
125 printk(KERN_DEBUG "Processor #%d %u:%u APIC version %d (quad %d, apic %d)\n",
127 (m->mpc_cpufeature & CPU_FAMILY_MASK) >> 8,
128 (m->mpc_cpufeature & CPU_MODEL_MASK) >> 4,
129 m->mpc_apicver, quad, logical_apicid);
130 return logical_apicid;
133 int mp_bus_id_to_node[MAX_MP_BUSSES];
135 int mp_bus_id_to_local[MAX_MP_BUSSES];
137 /* x86_quirks member */
138 static void mpc_oem_bus_info(struct mpc_config_bus *m, char *name)
140 int quad = translation_table[mpc_record]->trans_quad;
141 int local = translation_table[mpc_record]->trans_local;
143 mp_bus_id_to_node[m->mpc_busid] = quad;
144 mp_bus_id_to_local[m->mpc_busid] = local;
145 printk(KERN_INFO "Bus #%d is %s (node %d)\n",
146 m->mpc_busid, name, quad);
149 int quad_local_to_mp_bus_id [NR_CPUS/4][4];
151 /* x86_quirks member */
152 static void mpc_oem_pci_bus(struct mpc_config_bus *m)
154 int quad = translation_table[mpc_record]->trans_quad;
155 int local = translation_table[mpc_record]->trans_local;
157 quad_local_to_mp_bus_id[quad][local] = m->mpc_busid;
160 static void __init MP_translation_info(struct mpc_config_translation *m)
163 "Translation: record %d, type %d, quad %d, global %d, local %d\n",
164 mpc_record, m->trans_type, m->trans_quad, m->trans_global,
167 if (mpc_record >= MAX_MPC_ENTRY)
168 printk(KERN_ERR "MAX_MPC_ENTRY exceeded!\n");
170 translation_table[mpc_record] = m; /* stash this for later */
171 if (m->trans_quad < MAX_NUMNODES && !node_online(m->trans_quad))
172 node_set_online(m->trans_quad);
175 static int __init mpf_checksum(unsigned char *mp, int len)
186 * Read/parse the MPC oem tables
189 static void __init smp_read_mpc_oem(struct mp_config_oemtable *oemtable,
190 unsigned short oemsize)
192 int count = sizeof(*oemtable); /* the header size */
193 unsigned char *oemptr = ((unsigned char *)oemtable) + count;
196 printk(KERN_INFO "Found an OEM MPC table at %8p - parsing it ... \n",
198 if (memcmp(oemtable->oem_signature, MPC_OEM_SIGNATURE, 4)) {
200 "SMP mpc oemtable: bad signature [%c%c%c%c]!\n",
201 oemtable->oem_signature[0], oemtable->oem_signature[1],
202 oemtable->oem_signature[2], oemtable->oem_signature[3]);
205 if (mpf_checksum((unsigned char *)oemtable, oemtable->oem_length)) {
206 printk(KERN_WARNING "SMP oem mptable: checksum error!\n");
209 while (count < oemtable->oem_length) {
213 struct mpc_config_translation *m =
214 (struct mpc_config_translation *)oemptr;
215 MP_translation_info(m);
216 oemptr += sizeof(*m);
224 "Unrecognised OEM table entry type! - %d\n",
232 static int __init numaq_setup_ioapic_ids(void)
238 static int __init numaq_update_genapic(void)
240 genapic->wakeup_cpu = wakeup_secondary_cpu_via_nmi;
245 static struct x86_quirks numaq_x86_quirks __initdata = {
246 .arch_pre_time_init = numaq_pre_time_init,
247 .arch_time_init = NULL,
248 .arch_pre_intr_init = NULL,
249 .arch_memory_setup = NULL,
250 .arch_intr_init = NULL,
251 .arch_trap_init = NULL,
252 .mach_get_smp_config = NULL,
253 .mach_find_smp_config = NULL,
254 .mpc_record = &mpc_record,
255 .mpc_apic_id = mpc_apic_id,
256 .mpc_oem_bus_info = mpc_oem_bus_info,
257 .mpc_oem_pci_bus = mpc_oem_pci_bus,
258 .smp_read_mpc_oem = smp_read_mpc_oem,
259 .setup_ioapic_ids = numaq_setup_ioapic_ids,
260 .update_genapic = numaq_update_genapic,
263 void numaq_mps_oem_check(struct mp_config_table *mpc, char *oem,
266 if (strncmp(oem, "IBM NUMA", 8))
267 printk("Warning! Not a NUMA-Q system!\n");
272 static __init void early_check_numaq(void)
275 * Find possible boot-time SMP configuration:
277 early_find_smp_config();
279 * get boot-time SMP configuration:
281 if (smp_found_config)
282 early_get_smp_config();
285 x86_quirks = &numaq_x86_quirks;
288 int __init get_memcfg_numaq(void)