Commit | Line | Data |
---|---|---|
637cba02 | 1 | /* |
77313190 IM |
2 | * APIC driver for "bigsmp" xAPIC machines with more than 8 virtual CPUs. |
3 | * | |
1da177e4 LT |
4 | * Drives the local APIC in "clustered mode". |
5 | */ | |
1da177e4 LT |
6 | #include <linux/threads.h> |
7 | #include <linux/cpumask.h> | |
1da177e4 | 8 | #include <linux/kernel.h> |
1da177e4 LT |
9 | #include <linux/init.h> |
10 | #include <linux/dmi.h> | |
4696ca5b | 11 | #include <linux/smp.h> |
9f4187f0 | 12 | |
77313190 IM |
13 | #include <asm/apicdef.h> |
14 | #include <asm/fixmap.h> | |
15 | #include <asm/mpspec.h> | |
16 | #include <asm/apic.h> | |
17 | #include <asm/ipi.h> | |
9f4187f0 | 18 | |
9694cd6c | 19 | static unsigned bigsmp_get_apic_id(unsigned long x) |
9f4187f0 IM |
20 | { |
21 | return (x >> 24) & 0xFF; | |
22 | } | |
23 | ||
9694cd6c | 24 | static int bigsmp_apic_id_registered(void) |
9f4187f0 IM |
25 | { |
26 | return 1; | |
27 | } | |
28 | ||
7abc0753 | 29 | static unsigned long bigsmp_check_apicid_used(physid_mask_t *map, int apicid) |
9f4187f0 IM |
30 | { |
31 | return 0; | |
32 | } | |
33 | ||
9694cd6c | 34 | static unsigned long bigsmp_check_apicid_present(int bit) |
9f4187f0 IM |
35 | { |
36 | return 1; | |
37 | } | |
38 | ||
12bf24a4 TH |
39 | static int bigsmp_early_logical_apicid(int cpu) |
40 | { | |
41 | /* on bigsmp, logical apicid is the same as physical */ | |
42 | return early_per_cpu(x86_cpu_to_apicid, cpu); | |
43 | } | |
44 | ||
9f4187f0 IM |
45 | static inline unsigned long calculate_ldr(int cpu) |
46 | { | |
47 | unsigned long val, id; | |
77313190 | 48 | |
9f4187f0 | 49 | val = apic_read(APIC_LDR) & ~APIC_LDR_MASK; |
77313190 | 50 | id = per_cpu(x86_bios_cpu_apicid, cpu); |
9f4187f0 | 51 | val |= SET_APIC_LOGICAL_ID(id); |
77313190 | 52 | |
9f4187f0 IM |
53 | return val; |
54 | } | |
55 | ||
56 | /* | |
57 | * Set up the logical destination ID. | |
58 | * | |
59 | * Intel recommends to set DFR, LDR and TPR before enabling | |
60 | * an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel | |
61 | * document number 292116). So here it goes... | |
62 | */ | |
9694cd6c | 63 | static void bigsmp_init_apic_ldr(void) |
9f4187f0 IM |
64 | { |
65 | unsigned long val; | |
66 | int cpu = smp_processor_id(); | |
67 | ||
77313190 | 68 | apic_write(APIC_DFR, APIC_DFR_FLAT); |
9f4187f0 IM |
69 | val = calculate_ldr(cpu); |
70 | apic_write(APIC_LDR, val); | |
71 | } | |
72 | ||
9694cd6c | 73 | static void bigsmp_setup_apic_routing(void) |
9f4187f0 | 74 | { |
77313190 IM |
75 | printk(KERN_INFO |
76 | "Enabling APIC mode: Physflat. Using %d I/O APICs\n", | |
77 | nr_ioapics); | |
9f4187f0 IM |
78 | } |
79 | ||
9694cd6c | 80 | static int bigsmp_cpu_present_to_apicid(int mps_cpu) |
9f4187f0 IM |
81 | { |
82 | if (mps_cpu < nr_cpu_ids) | |
83 | return (int) per_cpu(x86_bios_cpu_apicid, mps_cpu); | |
84 | ||
85 | return BAD_APICID; | |
86 | } | |
87 | ||
7abc0753 | 88 | static void bigsmp_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap) |
9f4187f0 IM |
89 | { |
90 | /* For clustered we don't have a good way to do this yet - hack */ | |
7abc0753 | 91 | physids_promote(0xFFL, retmap); |
9f4187f0 IM |
92 | } |
93 | ||
e11dadab | 94 | static int bigsmp_check_phys_apicid_present(int phys_apicid) |
9f4187f0 IM |
95 | { |
96 | return 1; | |
97 | } | |
98 | ||
9694cd6c | 99 | static int bigsmp_phys_pkg_id(int cpuid_apic, int index_msb) |
9f4187f0 IM |
100 | { |
101 | return cpuid_apic >> index_msb; | |
102 | } | |
103 | ||
9f4187f0 IM |
104 | static inline void bigsmp_send_IPI_mask(const struct cpumask *mask, int vector) |
105 | { | |
43f39890 | 106 | default_send_IPI_mask_sequence_phys(mask, vector); |
9f4187f0 IM |
107 | } |
108 | ||
9694cd6c | 109 | static void bigsmp_send_IPI_allbutself(int vector) |
9f4187f0 | 110 | { |
43f39890 | 111 | default_send_IPI_mask_allbutself_phys(cpu_online_mask, vector); |
9f4187f0 IM |
112 | } |
113 | ||
9694cd6c | 114 | static void bigsmp_send_IPI_all(int vector) |
9f4187f0 IM |
115 | { |
116 | bigsmp_send_IPI_mask(cpu_online_mask, vector); | |
117 | } | |
1da177e4 LT |
118 | |
119 | static int dmi_bigsmp; /* can be set by dmi scanners */ | |
120 | ||
1855256c | 121 | static int hp_ht_bigsmp(const struct dmi_system_id *d) |
1da177e4 | 122 | { |
1da177e4 LT |
123 | printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident); |
124 | dmi_bigsmp = 1; | |
77313190 | 125 | |
1da177e4 LT |
126 | return 0; |
127 | } | |
128 | ||
129 | ||
1855256c | 130 | static const struct dmi_system_id bigsmp_dmi_table[] = { |
637cba02 | 131 | { hp_ht_bigsmp, "HP ProLiant DL760 G2", |
77313190 IM |
132 | { DMI_MATCH(DMI_BIOS_VENDOR, "HP"), |
133 | DMI_MATCH(DMI_BIOS_VERSION, "P44-"), | |
134 | } | |
637cba02 PC |
135 | }, |
136 | ||
137 | { hp_ht_bigsmp, "HP ProLiant DL740", | |
77313190 IM |
138 | { DMI_MATCH(DMI_BIOS_VENDOR, "HP"), |
139 | DMI_MATCH(DMI_BIOS_VERSION, "P47-"), | |
140 | } | |
637cba02 | 141 | }, |
77313190 | 142 | { } /* NULL entry stops DMI scanning */ |
1da177e4 LT |
143 | }; |
144 | ||
af669c97 | 145 | static int probe_bigsmp(void) |
637cba02 | 146 | { |
911a62d4 | 147 | if (def_to_bigsmp) |
e0da3364 | 148 | dmi_bigsmp = 1; |
911a62d4 VP |
149 | else |
150 | dmi_check_system(bigsmp_dmi_table); | |
77313190 | 151 | |
637cba02 PC |
152 | return dmi_bigsmp; |
153 | } | |
1da177e4 | 154 | |
1a8880a1 | 155 | static struct apic apic_bigsmp = { |
d26b6d66 IM |
156 | |
157 | .name = "bigsmp", | |
158 | .probe = probe_bigsmp, | |
306db03b | 159 | .acpi_madt_oem_check = NULL, |
fa63030e | 160 | .apic_id_valid = default_apic_id_valid, |
7ed248da | 161 | .apic_id_registered = bigsmp_apic_id_registered, |
d26b6d66 | 162 | |
d8a3539e IM |
163 | .irq_delivery_mode = dest_Fixed, |
164 | /* phys delivery to target CPU: */ | |
165 | .irq_dest_mode = 0, | |
d26b6d66 | 166 | |
bf721d3a | 167 | .target_cpus = default_target_cpus, |
08125d3e | 168 | .disable_esr = 1, |
bdb1a9b6 | 169 | .dest_logical = 0, |
d1d7cae8 IM |
170 | .check_apicid_used = bigsmp_check_apicid_used, |
171 | .check_apicid_present = bigsmp_check_apicid_present, | |
d26b6d66 | 172 | |
9d8e1066 | 173 | .vector_allocation_domain = default_vector_allocation_domain, |
a5c43296 | 174 | .init_apic_ldr = bigsmp_init_apic_ldr, |
d26b6d66 | 175 | |
d190cb87 | 176 | .ioapic_phys_id_map = bigsmp_ioapic_phys_id_map, |
72ce0165 | 177 | .setup_apic_routing = bigsmp_setup_apic_routing, |
33a201fa | 178 | .multi_timer_check = NULL, |
a21769a4 | 179 | .cpu_present_to_apicid = bigsmp_cpu_present_to_apicid, |
7abc0753 | 180 | .apicid_to_cpu_present = physid_set_mask_of_physid, |
d83093b5 | 181 | .setup_portio_remap = NULL, |
a27a6210 | 182 | .check_phys_apicid_present = bigsmp_check_phys_apicid_present, |
49040333 | 183 | .enable_apic_mode = NULL, |
cb8cc442 | 184 | .phys_pkg_id = bigsmp_phys_pkg_id, |
9c764247 | 185 | .mps_oem_check = NULL, |
d26b6d66 | 186 | |
ca6c8ed4 | 187 | .get_apic_id = bigsmp_get_apic_id, |
d26b6d66 | 188 | .set_apic_id = NULL, |
94af1875 | 189 | .apic_id_mask = 0xFF << 24, |
d26b6d66 | 190 | |
6398268d | 191 | .cpu_mask_to_apicid_and = default_cpu_mask_to_apicid_and, |
d26b6d66 | 192 | |
9f4187f0 | 193 | .send_IPI_mask = bigsmp_send_IPI_mask, |
d26b6d66 | 194 | .send_IPI_mask_allbutself = NULL, |
dac5f412 IM |
195 | .send_IPI_allbutself = bigsmp_send_IPI_allbutself, |
196 | .send_IPI_all = bigsmp_send_IPI_all, | |
6b64ee02 | 197 | .send_IPI_self = default_send_IPI_self, |
d26b6d66 | 198 | |
6f177c01 IM |
199 | .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, |
200 | .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, | |
a9659366 | 201 | |
465822cf | 202 | .wait_for_init_deassert = true, |
333344d9 | 203 | .smp_callin_clear_local_apic = NULL, |
25dc0049 | 204 | .inquire_remote_apic = default_inquire_remote_apic, |
c1eeb2de YL |
205 | |
206 | .read = native_apic_mem_read, | |
207 | .write = native_apic_mem_write, | |
2a43195d | 208 | .eoi_write = native_apic_mem_write, |
c1eeb2de YL |
209 | .icr_read = native_apic_icr_read, |
210 | .icr_write = native_apic_icr_write, | |
211 | .wait_icr_idle = native_apic_wait_icr_idle, | |
212 | .safe_wait_icr_idle = native_safe_apic_wait_icr_idle, | |
acb8bc09 | 213 | |
12bf24a4 | 214 | .x86_32_early_logical_apicid = bigsmp_early_logical_apicid, |
d26b6d66 | 215 | }; |
107e0e0c | 216 | |
838312be | 217 | void __init generic_bigsmp_probe(void) |
69c252ff | 218 | { |
838312be | 219 | unsigned int cpu; |
69c252ff | 220 | |
838312be JB |
221 | if (!probe_bigsmp()) |
222 | return; | |
223 | ||
224 | apic = &apic_bigsmp; | |
225 | ||
226 | for_each_possible_cpu(cpu) { | |
227 | if (early_per_cpu(x86_cpu_to_logical_apicid, | |
228 | cpu) == BAD_APICID) | |
229 | continue; | |
230 | early_per_cpu(x86_cpu_to_logical_apicid, cpu) = | |
231 | bigsmp_early_logical_apicid(cpu); | |
232 | } | |
233 | ||
234 | pr_info("Overriding APIC driver with %s\n", apic_bigsmp.name); | |
69c252ff SS |
235 | } |
236 | ||
107e0e0c | 237 | apic_driver(apic_bigsmp); |