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1da177e4 LT |
1 | /* |
2 | * Written by: Patricia Gaughen, IBM Corporation | |
3 | * | |
4 | * Copyright (C) 2002, IBM Corp. | |
5 | * | |
6 | * All rights reserved. | |
7 | * | |
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. | |
12 | * | |
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 | |
17 | * details. | |
18 | * | |
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. | |
22 | * | |
23 | * Send feedback to <gone@us.ibm.com> | |
24 | */ | |
25 | ||
1da177e4 LT |
26 | #include <linux/mm.h> |
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> | |
e1474e2d | 33 | #include <asm/processor.h> |
54ac14a8 | 34 | #include <asm/genapic.h> |
7b2a0a6c | 35 | #include <asm/e820.h> |
64898a8b | 36 | #include <asm/setup.h> |
1da177e4 LT |
37 | |
38 | #define MB_TO_PAGES(addr) ((addr) << (20 - PAGE_SHIFT)) | |
39 | ||
40 | /* | |
41 | * Function: smp_dump_qct() | |
42 | * | |
43 | * Description: gets memory layout from the quad config table. This | |
44 | * function also updates node_online_map with the nodes (quads) present. | |
45 | */ | |
46 | static void __init smp_dump_qct(void) | |
47 | { | |
48 | int node; | |
49 | struct eachquadmem *eq; | |
50 | struct sys_cfg_data *scd = | |
51 | (struct sys_cfg_data *)__va(SYS_CFG_DATA_PRIV_ADDR); | |
52 | ||
53 | nodes_clear(node_online_map); | |
54 | for_each_node(node) { | |
55 | if (scd->quads_present31_0 & (1 << node)) { | |
56 | node_set_online(node); | |
57 | eq = &scd->eq[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); | |
63 | ||
7b2a0a6c YL |
64 | e820_register_active_regions(node, node_start_pfn[node], |
65 | node_end_pfn[node]); | |
1da177e4 LT |
66 | memory_present(node, |
67 | node_start_pfn[node], node_end_pfn[node]); | |
68 | node_remap_size[node] = node_memmap_size_bytes(node, | |
69 | node_start_pfn[node], | |
70 | node_end_pfn[node]); | |
71 | } | |
72 | } | |
73 | } | |
74 | ||
64898a8b | 75 | |
b2a6a58c | 76 | void __cpuinit numaq_tsc_disable(void) |
64898a8b YL |
77 | { |
78 | if (!found_numaq) | |
79 | return; | |
80 | ||
81 | if (num_online_nodes() > 1) { | |
82 | printk(KERN_DEBUG "NUMAQ: disabling TSC\n"); | |
83 | setup_clear_cpu_cap(X86_FEATURE_TSC); | |
84 | } | |
85 | } | |
86 | ||
63b5d7af YL |
87 | static int __init numaq_pre_time_init(void) |
88 | { | |
89 | numaq_tsc_disable(); | |
90 | return 0; | |
91 | } | |
92 | ||
64898a8b YL |
93 | int found_numaq; |
94 | /* | |
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 | |
97 | * doing this .... | |
98 | */ | |
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; | |
107 | }; | |
108 | ||
109 | /* x86_quirks member */ | |
110 | static int mpc_record; | |
111 | static struct mpc_config_translation *translation_table[MAX_MPC_ENTRY] | |
112 | __cpuinitdata; | |
113 | ||
114 | static inline int generate_logical_apicid(int quad, int phys_apicid) | |
115 | { | |
116 | return (quad << 4) + (phys_apicid ? phys_apicid << 1 : 1); | |
117 | } | |
118 | ||
119 | /* x86_quirks member */ | |
120 | static int mpc_apic_id(struct mpc_config_processor *m) | |
121 | { | |
122 | int quad = translation_table[mpc_record]->trans_quad; | |
123 | int logical_apicid = generate_logical_apicid(quad, m->mpc_apicid); | |
124 | ||
125 | printk(KERN_DEBUG "Processor #%d %u:%u APIC version %d (quad %d, apic %d)\n", | |
126 | m->mpc_apicid, | |
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; | |
131 | } | |
132 | ||
133 | int mp_bus_id_to_node[MAX_MP_BUSSES]; | |
134 | ||
135 | int mp_bus_id_to_local[MAX_MP_BUSSES]; | |
136 | ||
137 | /* x86_quirks member */ | |
138 | static void mpc_oem_bus_info(struct mpc_config_bus *m, char *name) | |
139 | { | |
140 | int quad = translation_table[mpc_record]->trans_quad; | |
141 | int local = translation_table[mpc_record]->trans_local; | |
142 | ||
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); | |
147 | } | |
148 | ||
149 | int quad_local_to_mp_bus_id [NR_CPUS/4][4]; | |
150 | ||
151 | /* x86_quirks member */ | |
152 | static void mpc_oem_pci_bus(struct mpc_config_bus *m) | |
153 | { | |
154 | int quad = translation_table[mpc_record]->trans_quad; | |
155 | int local = translation_table[mpc_record]->trans_local; | |
156 | ||
157 | quad_local_to_mp_bus_id[quad][local] = m->mpc_busid; | |
158 | } | |
159 | ||
160 | static void __init MP_translation_info(struct mpc_config_translation *m) | |
161 | { | |
162 | printk(KERN_INFO | |
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, | |
165 | m->trans_local); | |
166 | ||
167 | if (mpc_record >= MAX_MPC_ENTRY) | |
168 | printk(KERN_ERR "MAX_MPC_ENTRY exceeded!\n"); | |
169 | else | |
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); | |
173 | } | |
174 | ||
175 | static int __init mpf_checksum(unsigned char *mp, int len) | |
176 | { | |
177 | int sum = 0; | |
178 | ||
179 | while (len--) | |
180 | sum += *mp++; | |
181 | ||
182 | return sum & 0xFF; | |
183 | } | |
184 | ||
185 | /* | |
186 | * Read/parse the MPC oem tables | |
187 | */ | |
188 | ||
189 | static void __init smp_read_mpc_oem(struct mp_config_oemtable *oemtable, | |
190 | unsigned short oemsize) | |
191 | { | |
192 | int count = sizeof(*oemtable); /* the header size */ | |
193 | unsigned char *oemptr = ((unsigned char *)oemtable) + count; | |
194 | ||
195 | mpc_record = 0; | |
196 | printk(KERN_INFO "Found an OEM MPC table at %8p - parsing it ... \n", | |
197 | oemtable); | |
198 | if (memcmp(oemtable->oem_signature, MPC_OEM_SIGNATURE, 4)) { | |
199 | printk(KERN_WARNING | |
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]); | |
203 | return; | |
204 | } | |
205 | if (mpf_checksum((unsigned char *)oemtable, oemtable->oem_length)) { | |
206 | printk(KERN_WARNING "SMP oem mptable: checksum error!\n"); | |
207 | return; | |
208 | } | |
209 | while (count < oemtable->oem_length) { | |
210 | switch (*oemptr) { | |
211 | case MP_TRANSLATION: | |
212 | { | |
213 | struct mpc_config_translation *m = | |
214 | (struct mpc_config_translation *)oemptr; | |
215 | MP_translation_info(m); | |
216 | oemptr += sizeof(*m); | |
217 | count += sizeof(*m); | |
218 | ++mpc_record; | |
219 | break; | |
220 | } | |
221 | default: | |
222 | { | |
223 | printk(KERN_WARNING | |
224 | "Unrecognised OEM table entry type! - %d\n", | |
225 | (int)*oemptr); | |
226 | return; | |
227 | } | |
228 | } | |
229 | } | |
230 | } | |
231 | ||
a4dbc34d YL |
232 | static int __init numaq_setup_ioapic_ids(void) |
233 | { | |
234 | /* so can skip it */ | |
235 | return 1; | |
236 | } | |
237 | ||
54ac14a8 YL |
238 | static int __init numaq_update_genapic(void) |
239 | { | |
240 | genapic->wakeup_cpu = wakeup_secondary_cpu_via_nmi; | |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
64898a8b | 245 | static struct x86_quirks numaq_x86_quirks __initdata = { |
63b5d7af | 246 | .arch_pre_time_init = numaq_pre_time_init, |
64898a8b YL |
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, | |
a4dbc34d | 259 | .setup_ioapic_ids = numaq_setup_ioapic_ids, |
54ac14a8 | 260 | .update_genapic = numaq_update_genapic, |
64898a8b YL |
261 | }; |
262 | ||
f29521e4 | 263 | void numaq_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid) |
64898a8b YL |
264 | { |
265 | if (strncmp(oem, "IBM NUMA", 8)) | |
266 | printk("Warning! Not a NUMA-Q system!\n"); | |
267 | else | |
268 | found_numaq = 1; | |
269 | } | |
270 | ||
ab530e1f YL |
271 | static __init void early_check_numaq(void) |
272 | { | |
273 | /* | |
274 | * Find possible boot-time SMP configuration: | |
275 | */ | |
276 | early_find_smp_config(); | |
277 | /* | |
278 | * get boot-time SMP configuration: | |
279 | */ | |
280 | if (smp_found_config) | |
281 | early_get_smp_config(); | |
64898a8b YL |
282 | |
283 | if (found_numaq) | |
284 | x86_quirks = &numaq_x86_quirks; | |
ab530e1f YL |
285 | } |
286 | ||
1da177e4 LT |
287 | int __init get_memcfg_numaq(void) |
288 | { | |
ab530e1f YL |
289 | early_check_numaq(); |
290 | if (!found_numaq) | |
291 | return 0; | |
1da177e4 LT |
292 | smp_dump_qct(); |
293 | return 1; | |
294 | } |