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-rw-r--r--arch/x86/Kconfig4
-rw-r--r--arch/x86/include/asm/bigsmp/apic.h2
-rw-r--r--arch/x86/include/asm/es7000/apic.h79
-rw-r--r--arch/x86/include/asm/es7000/wakecpu.h41
-rw-r--r--arch/x86/include/asm/genapic_32.h19
-rw-r--r--arch/x86/include/asm/genapic_64.h2
-rw-r--r--arch/x86/include/asm/mach-default/mach_apic.h2
-rw-r--r--arch/x86/include/asm/mach-default/mach_wakecpu.h24
-rw-r--r--arch/x86/include/asm/mach-default/smpboot_hooks.h8
-rw-r--r--arch/x86/include/asm/mach-generic/mach_apic.h1
-rw-r--r--arch/x86/include/asm/mach-generic/mach_wakecpu.h12
-rw-r--r--arch/x86/include/asm/numaq/wakecpu.h24
-rw-r--r--arch/x86/include/asm/setup.h3
-rw-r--r--arch/x86/kernel/es7000_32.c62
-rw-r--r--arch/x86/kernel/genapic_64.c4
-rw-r--r--arch/x86/kernel/numaq_32.c10
-rw-r--r--arch/x86/kernel/setup.c15
-rw-r--r--arch/x86/kernel/smpboot.c17
-rw-r--r--arch/x86/mach-generic/bigsmp.c1
-rw-r--r--arch/x86/mach-generic/default.c1
-rw-r--r--arch/x86/mach-generic/es7000.c14
-rw-r--r--arch/x86/mach-generic/probe.c16
-rw-r--r--arch/x86/mach-generic/summit.c1
23 files changed, 235 insertions, 127 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index ac22bb7719f7..705e72e954b4 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -465,10 +465,6 @@ config X86_CYCLONE_TIMER
465 def_bool y 465 def_bool y
466 depends on X86_GENERICARCH 466 depends on X86_GENERICARCH
467 467
468config ES7000_CLUSTERED_APIC
469 def_bool y
470 depends on SMP && X86_ES7000 && MPENTIUMIII
471
472source "arch/x86/Kconfig.cpu" 468source "arch/x86/Kconfig.cpu"
473 469
474config HPET_TIMER 470config HPET_TIMER
diff --git a/arch/x86/include/asm/bigsmp/apic.h b/arch/x86/include/asm/bigsmp/apic.h
index 1d9543b9d358..ce547f24a1cd 100644
--- a/arch/x86/include/asm/bigsmp/apic.h
+++ b/arch/x86/include/asm/bigsmp/apic.h
@@ -24,8 +24,6 @@ static inline cpumask_t target_cpus(void)
24#define INT_DELIVERY_MODE (dest_Fixed) 24#define INT_DELIVERY_MODE (dest_Fixed)
25#define INT_DEST_MODE (0) /* phys delivery to target proc */ 25#define INT_DEST_MODE (0) /* phys delivery to target proc */
26#define NO_BALANCE_IRQ (0) 26#define NO_BALANCE_IRQ (0)
27#define WAKE_SECONDARY_VIA_INIT
28
29 27
30static inline unsigned long check_apicid_used(physid_mask_t bitmap, int apicid) 28static inline unsigned long check_apicid_used(physid_mask_t bitmap, int apicid)
31{ 29{
diff --git a/arch/x86/include/asm/es7000/apic.h b/arch/x86/include/asm/es7000/apic.h
index 380f0b4f17ed..e24ef876915f 100644
--- a/arch/x86/include/asm/es7000/apic.h
+++ b/arch/x86/include/asm/es7000/apic.h
@@ -9,31 +9,27 @@ static inline int apic_id_registered(void)
9 return (1); 9 return (1);
10} 10}
11 11
12static inline cpumask_t target_cpus(void) 12static inline cpumask_t target_cpus_cluster(void)
13{ 13{
14#if defined CONFIG_ES7000_CLUSTERED_APIC
15 return CPU_MASK_ALL; 14 return CPU_MASK_ALL;
16#else 15}
16
17static inline cpumask_t target_cpus(void)
18{
17 return cpumask_of_cpu(smp_processor_id()); 19 return cpumask_of_cpu(smp_processor_id());
18#endif
19} 20}
20 21
21#if defined CONFIG_ES7000_CLUSTERED_APIC 22#define APIC_DFR_VALUE_CLUSTER (APIC_DFR_CLUSTER)
22#define APIC_DFR_VALUE (APIC_DFR_CLUSTER) 23#define INT_DELIVERY_MODE_CLUSTER (dest_LowestPrio)
23#define INT_DELIVERY_MODE (dest_LowestPrio) 24#define INT_DEST_MODE_CLUSTER (1) /* logical delivery broadcast to all procs */
24#define INT_DEST_MODE (1) /* logical delivery broadcast to all procs */ 25#define NO_BALANCE_IRQ_CLUSTER (1)
25#define NO_BALANCE_IRQ (1) 26
26#undef WAKE_SECONDARY_VIA_INIT
27#define WAKE_SECONDARY_VIA_MIP
28#else
29#define APIC_DFR_VALUE (APIC_DFR_FLAT) 27#define APIC_DFR_VALUE (APIC_DFR_FLAT)
30#define INT_DELIVERY_MODE (dest_Fixed) 28#define INT_DELIVERY_MODE (dest_Fixed)
31#define INT_DEST_MODE (0) /* phys delivery to target procs */ 29#define INT_DEST_MODE (0) /* phys delivery to target procs */
32#define NO_BALANCE_IRQ (0) 30#define NO_BALANCE_IRQ (0)
33#undef APIC_DEST_LOGICAL 31#undef APIC_DEST_LOGICAL
34#define APIC_DEST_LOGICAL 0x0 32#define APIC_DEST_LOGICAL 0x0
35#define WAKE_SECONDARY_VIA_INIT
36#endif
37 33
38static inline unsigned long check_apicid_used(physid_mask_t bitmap, int apicid) 34static inline unsigned long check_apicid_used(physid_mask_t bitmap, int apicid)
39{ 35{
@@ -60,6 +56,16 @@ static inline unsigned long calculate_ldr(int cpu)
60 * an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel 56 * an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel
61 * document number 292116). So here it goes... 57 * document number 292116). So here it goes...
62 */ 58 */
59static inline void init_apic_ldr_cluster(void)
60{
61 unsigned long val;
62 int cpu = smp_processor_id();
63
64 apic_write(APIC_DFR, APIC_DFR_VALUE_CLUSTER);
65 val = calculate_ldr(cpu);
66 apic_write(APIC_LDR, val);
67}
68
63static inline void init_apic_ldr(void) 69static inline void init_apic_ldr(void)
64{ 70{
65 unsigned long val; 71 unsigned long val;
@@ -70,10 +76,6 @@ static inline void init_apic_ldr(void)
70 apic_write(APIC_LDR, val); 76 apic_write(APIC_LDR, val);
71} 77}
72 78
73#ifndef CONFIG_X86_GENERICARCH
74extern void enable_apic_mode(void);
75#endif
76
77extern int apic_version [MAX_APICS]; 79extern int apic_version [MAX_APICS];
78static inline void setup_apic_routing(void) 80static inline void setup_apic_routing(void)
79{ 81{
@@ -144,7 +146,7 @@ static inline int check_phys_apicid_present(int cpu_physical_apicid)
144 return (1); 146 return (1);
145} 147}
146 148
147static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask) 149static inline unsigned int cpu_mask_to_apicid_cluster(cpumask_t cpumask)
148{ 150{
149 int num_bits_set; 151 int num_bits_set;
150 int cpus_found = 0; 152 int cpus_found = 0;
@@ -154,11 +156,7 @@ static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
154 num_bits_set = cpus_weight(cpumask); 156 num_bits_set = cpus_weight(cpumask);
155 /* Return id to all */ 157 /* Return id to all */
156 if (num_bits_set == NR_CPUS) 158 if (num_bits_set == NR_CPUS)
157#if defined CONFIG_ES7000_CLUSTERED_APIC
158 return 0xFF; 159 return 0xFF;
159#else
160 return cpu_to_logical_apicid(0);
161#endif
162 /* 160 /*
163 * The cpus in the mask must all be on the apic cluster. If are not 161 * The cpus in the mask must all be on the apic cluster. If are not
164 * on the same apicid cluster return default value of TARGET_CPUS. 162 * on the same apicid cluster return default value of TARGET_CPUS.
@@ -171,11 +169,40 @@ static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
171 if (apicid_cluster(apicid) != 169 if (apicid_cluster(apicid) !=
172 apicid_cluster(new_apicid)){ 170 apicid_cluster(new_apicid)){
173 printk ("%s: Not a valid mask!\n", __func__); 171 printk ("%s: Not a valid mask!\n", __func__);
174#if defined CONFIG_ES7000_CLUSTERED_APIC
175 return 0xFF; 172 return 0xFF;
176#else 173 }
174 apicid = new_apicid;
175 cpus_found++;
176 }
177 cpu++;
178 }
179 return apicid;
180}
181
182static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask)
183{
184 int num_bits_set;
185 int cpus_found = 0;
186 int cpu;
187 int apicid;
188
189 num_bits_set = cpus_weight(cpumask);
190 /* Return id to all */
191 if (num_bits_set == NR_CPUS)
192 return cpu_to_logical_apicid(0);
193 /*
194 * The cpus in the mask must all be on the apic cluster. If are not
195 * on the same apicid cluster return default value of TARGET_CPUS.
196 */
197 cpu = first_cpu(cpumask);
198 apicid = cpu_to_logical_apicid(cpu);
199 while (cpus_found < num_bits_set) {
200 if (cpu_isset(cpu, cpumask)) {
201 int new_apicid = cpu_to_logical_apicid(cpu);
202 if (apicid_cluster(apicid) !=
203 apicid_cluster(new_apicid)){
204 printk ("%s: Not a valid mask!\n", __func__);
177 return cpu_to_logical_apicid(0); 205 return cpu_to_logical_apicid(0);
178#endif
179 } 206 }
180 apicid = new_apicid; 207 apicid = new_apicid;
181 cpus_found++; 208 cpus_found++;
diff --git a/arch/x86/include/asm/es7000/wakecpu.h b/arch/x86/include/asm/es7000/wakecpu.h
index 398493461913..78f0daaee436 100644
--- a/arch/x86/include/asm/es7000/wakecpu.h
+++ b/arch/x86/include/asm/es7000/wakecpu.h
@@ -1,36 +1,12 @@
1#ifndef __ASM_ES7000_WAKECPU_H 1#ifndef __ASM_ES7000_WAKECPU_H
2#define __ASM_ES7000_WAKECPU_H 2#define __ASM_ES7000_WAKECPU_H
3 3
4/* 4#define TRAMPOLINE_PHYS_LOW 0x467
5 * This file copes with machines that wakeup secondary CPUs by the 5#define TRAMPOLINE_PHYS_HIGH 0x469
6 * INIT, INIT, STARTUP sequence.
7 */
8
9#ifdef CONFIG_ES7000_CLUSTERED_APIC
10#define WAKE_SECONDARY_VIA_MIP
11#else
12#define WAKE_SECONDARY_VIA_INIT
13#endif
14
15#ifdef WAKE_SECONDARY_VIA_MIP
16extern int es7000_start_cpu(int cpu, unsigned long eip);
17static inline int
18wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip)
19{
20 int boot_error = 0;
21 boot_error = es7000_start_cpu(phys_apicid, start_eip);
22 return boot_error;
23}
24#endif
25
26#define TRAMPOLINE_LOW phys_to_virt(0x467)
27#define TRAMPOLINE_HIGH phys_to_virt(0x469)
28
29#define boot_cpu_apicid boot_cpu_physical_apicid
30 6
31static inline void wait_for_init_deassert(atomic_t *deassert) 7static inline void wait_for_init_deassert(atomic_t *deassert)
32{ 8{
33#ifdef WAKE_SECONDARY_VIA_INIT 9#ifndef CONFIG_ES7000_CLUSTERED_APIC
34 while (!atomic_read(deassert)) 10 while (!atomic_read(deassert))
35 cpu_relax(); 11 cpu_relax();
36#endif 12#endif
@@ -50,9 +26,12 @@ static inline void restore_NMI_vector(unsigned short *high, unsigned short *low)
50{ 26{
51} 27}
52 28
53#define inquire_remote_apic(apicid) do { \ 29extern void __inquire_remote_apic(int apicid);
54 if (apic_verbosity >= APIC_DEBUG) \ 30
55 __inquire_remote_apic(apicid); \ 31static inline void inquire_remote_apic(int apicid)
56 } while (0) 32{
33 if (apic_verbosity >= APIC_DEBUG)
34 __inquire_remote_apic(apicid);
35}
57 36
58#endif /* __ASM_MACH_WAKECPU_H */ 37#endif /* __ASM_MACH_WAKECPU_H */
diff --git a/arch/x86/include/asm/genapic_32.h b/arch/x86/include/asm/genapic_32.h
index 5cbd4fcc06fd..0ac17d33a8c7 100644
--- a/arch/x86/include/asm/genapic_32.h
+++ b/arch/x86/include/asm/genapic_32.h
@@ -2,6 +2,7 @@
2#define _ASM_X86_GENAPIC_32_H 2#define _ASM_X86_GENAPIC_32_H
3 3
4#include <asm/mpspec.h> 4#include <asm/mpspec.h>
5#include <asm/atomic.h>
5 6
6/* 7/*
7 * Generic APIC driver interface. 8 * Generic APIC driver interface.
@@ -65,6 +66,14 @@ struct genapic {
65 void (*send_IPI_allbutself)(int vector); 66 void (*send_IPI_allbutself)(int vector);
66 void (*send_IPI_all)(int vector); 67 void (*send_IPI_all)(int vector);
67#endif 68#endif
69 int (*wakeup_cpu)(int apicid, unsigned long start_eip);
70 int trampoline_phys_low;
71 int trampoline_phys_high;
72 void (*wait_for_init_deassert)(atomic_t *deassert);
73 void (*smp_callin_clear_local_apic)(void);
74 void (*store_NMI_vector)(unsigned short *high, unsigned short *low);
75 void (*restore_NMI_vector)(unsigned short *high, unsigned short *low);
76 void (*inquire_remote_apic)(int apicid);
68}; 77};
69 78
70#define APICFUNC(x) .x = x, 79#define APICFUNC(x) .x = x,
@@ -105,16 +114,24 @@ struct genapic {
105 APICFUNC(get_apic_id) \ 114 APICFUNC(get_apic_id) \
106 .apic_id_mask = APIC_ID_MASK, \ 115 .apic_id_mask = APIC_ID_MASK, \
107 APICFUNC(cpu_mask_to_apicid) \ 116 APICFUNC(cpu_mask_to_apicid) \
108 APICFUNC(vector_allocation_domain) \ 117 APICFUNC(vector_allocation_domain) \
109 APICFUNC(acpi_madt_oem_check) \ 118 APICFUNC(acpi_madt_oem_check) \
110 IPIFUNC(send_IPI_mask) \ 119 IPIFUNC(send_IPI_mask) \
111 IPIFUNC(send_IPI_allbutself) \ 120 IPIFUNC(send_IPI_allbutself) \
112 IPIFUNC(send_IPI_all) \ 121 IPIFUNC(send_IPI_all) \
113 APICFUNC(enable_apic_mode) \ 122 APICFUNC(enable_apic_mode) \
114 APICFUNC(phys_pkg_id) \ 123 APICFUNC(phys_pkg_id) \
124 .trampoline_phys_low = TRAMPOLINE_PHYS_LOW, \
125 .trampoline_phys_high = TRAMPOLINE_PHYS_HIGH, \
126 APICFUNC(wait_for_init_deassert) \
127 APICFUNC(smp_callin_clear_local_apic) \
128 APICFUNC(store_NMI_vector) \
129 APICFUNC(restore_NMI_vector) \
130 APICFUNC(inquire_remote_apic) \
115} 131}
116 132
117extern struct genapic *genapic; 133extern struct genapic *genapic;
134extern void es7000_update_genapic_to_cluster(void);
118 135
119enum uv_system_type {UV_NONE, UV_LEGACY_APIC, UV_X2APIC, UV_NON_UNIQUE_APIC}; 136enum uv_system_type {UV_NONE, UV_LEGACY_APIC, UV_X2APIC, UV_NON_UNIQUE_APIC};
120#define get_uv_system_type() UV_NONE 137#define get_uv_system_type() UV_NONE
diff --git a/arch/x86/include/asm/genapic_64.h b/arch/x86/include/asm/genapic_64.h
index 13c4e96199ea..2cae011668b7 100644
--- a/arch/x86/include/asm/genapic_64.h
+++ b/arch/x86/include/asm/genapic_64.h
@@ -32,6 +32,8 @@ struct genapic {
32 unsigned int (*get_apic_id)(unsigned long x); 32 unsigned int (*get_apic_id)(unsigned long x);
33 unsigned long (*set_apic_id)(unsigned int id); 33 unsigned long (*set_apic_id)(unsigned int id);
34 unsigned long apic_id_mask; 34 unsigned long apic_id_mask;
35 /* wakeup_secondary_cpu */
36 int (*wakeup_cpu)(int apicid, unsigned long start_eip);
35}; 37};
36 38
37extern struct genapic *genapic; 39extern struct genapic *genapic;
diff --git a/arch/x86/include/asm/mach-default/mach_apic.h b/arch/x86/include/asm/mach-default/mach_apic.h
index ff3a6c236c00..6cb3a467e067 100644
--- a/arch/x86/include/asm/mach-default/mach_apic.h
+++ b/arch/x86/include/asm/mach-default/mach_apic.h
@@ -32,11 +32,13 @@ static inline cpumask_t target_cpus(void)
32#define vector_allocation_domain (genapic->vector_allocation_domain) 32#define vector_allocation_domain (genapic->vector_allocation_domain)
33#define read_apic_id() (GET_APIC_ID(apic_read(APIC_ID))) 33#define read_apic_id() (GET_APIC_ID(apic_read(APIC_ID)))
34#define send_IPI_self (genapic->send_IPI_self) 34#define send_IPI_self (genapic->send_IPI_self)
35#define wakeup_secondary_cpu (genapic->wakeup_cpu)
35extern void setup_apic_routing(void); 36extern void setup_apic_routing(void);
36#else 37#else
37#define INT_DELIVERY_MODE dest_LowestPrio 38#define INT_DELIVERY_MODE dest_LowestPrio
38#define INT_DEST_MODE 1 /* logical delivery broadcast to all procs */ 39#define INT_DEST_MODE 1 /* logical delivery broadcast to all procs */
39#define TARGET_CPUS (target_cpus()) 40#define TARGET_CPUS (target_cpus())
41#define wakeup_secondary_cpu wakeup_secondary_cpu_via_init
40/* 42/*
41 * Set up the logical destination ID. 43 * Set up the logical destination ID.
42 * 44 *
diff --git a/arch/x86/include/asm/mach-default/mach_wakecpu.h b/arch/x86/include/asm/mach-default/mach_wakecpu.h
index 9d80db91e992..ceb013660146 100644
--- a/arch/x86/include/asm/mach-default/mach_wakecpu.h
+++ b/arch/x86/include/asm/mach-default/mach_wakecpu.h
@@ -1,17 +1,8 @@
1#ifndef _ASM_X86_MACH_DEFAULT_MACH_WAKECPU_H 1#ifndef _ASM_X86_MACH_DEFAULT_MACH_WAKECPU_H
2#define _ASM_X86_MACH_DEFAULT_MACH_WAKECPU_H 2#define _ASM_X86_MACH_DEFAULT_MACH_WAKECPU_H
3 3
4/* 4#define TRAMPOLINE_PHYS_LOW (0x467)
5 * This file copes with machines that wakeup secondary CPUs by the 5#define TRAMPOLINE_PHYS_HIGH (0x469)
6 * INIT, INIT, STARTUP sequence.
7 */
8
9#define WAKE_SECONDARY_VIA_INIT
10
11#define TRAMPOLINE_LOW phys_to_virt(0x467)
12#define TRAMPOLINE_HIGH phys_to_virt(0x469)
13
14#define boot_cpu_apicid boot_cpu_physical_apicid
15 6
16static inline void wait_for_init_deassert(atomic_t *deassert) 7static inline void wait_for_init_deassert(atomic_t *deassert)
17{ 8{
@@ -33,9 +24,12 @@ static inline void restore_NMI_vector(unsigned short *high, unsigned short *low)
33{ 24{
34} 25}
35 26
36#define inquire_remote_apic(apicid) do { \ 27extern void __inquire_remote_apic(int apicid);
37 if (apic_verbosity >= APIC_DEBUG) \ 28
38 __inquire_remote_apic(apicid); \ 29static inline void inquire_remote_apic(int apicid)
39 } while (0) 30{
31 if (apic_verbosity >= APIC_DEBUG)
32 __inquire_remote_apic(apicid);
33}
40 34
41#endif /* _ASM_X86_MACH_DEFAULT_MACH_WAKECPU_H */ 35#endif /* _ASM_X86_MACH_DEFAULT_MACH_WAKECPU_H */
diff --git a/arch/x86/include/asm/mach-default/smpboot_hooks.h b/arch/x86/include/asm/mach-default/smpboot_hooks.h
index dbab36d64d48..23bf52103b89 100644
--- a/arch/x86/include/asm/mach-default/smpboot_hooks.h
+++ b/arch/x86/include/asm/mach-default/smpboot_hooks.h
@@ -13,9 +13,11 @@ static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
13 CMOS_WRITE(0xa, 0xf); 13 CMOS_WRITE(0xa, 0xf);
14 local_flush_tlb(); 14 local_flush_tlb();
15 pr_debug("1.\n"); 15 pr_debug("1.\n");
16 *((volatile unsigned short *) TRAMPOLINE_HIGH) = start_eip >> 4; 16 *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_HIGH)) =
17 start_eip >> 4;
17 pr_debug("2.\n"); 18 pr_debug("2.\n");
18 *((volatile unsigned short *) TRAMPOLINE_LOW) = start_eip & 0xf; 19 *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_LOW)) =
20 start_eip & 0xf;
19 pr_debug("3.\n"); 21 pr_debug("3.\n");
20} 22}
21 23
@@ -32,7 +34,7 @@ static inline void smpboot_restore_warm_reset_vector(void)
32 */ 34 */
33 CMOS_WRITE(0, 0xf); 35 CMOS_WRITE(0, 0xf);
34 36
35 *((volatile long *) phys_to_virt(0x467)) = 0; 37 *((volatile long *)phys_to_virt(TRAMPOLINE_PHYS_LOW)) = 0;
36} 38}
37 39
38static inline void __init smpboot_setup_io_apic(void) 40static inline void __init smpboot_setup_io_apic(void)
diff --git a/arch/x86/include/asm/mach-generic/mach_apic.h b/arch/x86/include/asm/mach-generic/mach_apic.h
index 5180bd7478fb..e430f47df667 100644
--- a/arch/x86/include/asm/mach-generic/mach_apic.h
+++ b/arch/x86/include/asm/mach-generic/mach_apic.h
@@ -27,6 +27,7 @@
27#define vector_allocation_domain (genapic->vector_allocation_domain) 27#define vector_allocation_domain (genapic->vector_allocation_domain)
28#define enable_apic_mode (genapic->enable_apic_mode) 28#define enable_apic_mode (genapic->enable_apic_mode)
29#define phys_pkg_id (genapic->phys_pkg_id) 29#define phys_pkg_id (genapic->phys_pkg_id)
30#define wakeup_secondary_cpu (genapic->wakeup_cpu)
30 31
31extern void generic_bigsmp_probe(void); 32extern void generic_bigsmp_probe(void);
32 33
diff --git a/arch/x86/include/asm/mach-generic/mach_wakecpu.h b/arch/x86/include/asm/mach-generic/mach_wakecpu.h
new file mode 100644
index 000000000000..1ab16b168c8a
--- /dev/null
+++ b/arch/x86/include/asm/mach-generic/mach_wakecpu.h
@@ -0,0 +1,12 @@
1#ifndef _ASM_X86_MACH_GENERIC_MACH_WAKECPU_H
2#define _ASM_X86_MACH_GENERIC_MACH_WAKECPU_H
3
4#define TRAMPOLINE_PHYS_LOW (genapic->trampoline_phys_low)
5#define TRAMPOLINE_PHYS_HIGH (genapic->trampoline_phys_high)
6#define wait_for_init_deassert (genapic->wait_for_init_deassert)
7#define smp_callin_clear_local_apic (genapic->smp_callin_clear_local_apic)
8#define store_NMI_vector (genapic->store_NMI_vector)
9#define restore_NMI_vector (genapic->restore_NMI_vector)
10#define inquire_remote_apic (genapic->inquire_remote_apic)
11
12#endif /* _ASM_X86_MACH_GENERIC_MACH_APIC_H */
diff --git a/arch/x86/include/asm/numaq/wakecpu.h b/arch/x86/include/asm/numaq/wakecpu.h
index c577bda5b1c5..6f499df8eddb 100644
--- a/arch/x86/include/asm/numaq/wakecpu.h
+++ b/arch/x86/include/asm/numaq/wakecpu.h
@@ -3,12 +3,8 @@
3 3
4/* This file copes with machines that wakeup secondary CPUs by NMIs */ 4/* This file copes with machines that wakeup secondary CPUs by NMIs */
5 5
6#define WAKE_SECONDARY_VIA_NMI 6#define TRAMPOLINE_PHYS_LOW (0x8)
7 7#define TRAMPOLINE_PHYS_HIGH (0xa)
8#define TRAMPOLINE_LOW phys_to_virt(0x8)
9#define TRAMPOLINE_HIGH phys_to_virt(0xa)
10
11#define boot_cpu_apicid boot_cpu_logical_apicid
12 8
13/* We don't do anything here because we use NMI's to boot instead */ 9/* We don't do anything here because we use NMI's to boot instead */
14static inline void wait_for_init_deassert(atomic_t *deassert) 10static inline void wait_for_init_deassert(atomic_t *deassert)
@@ -27,17 +23,23 @@ static inline void smp_callin_clear_local_apic(void)
27static inline void store_NMI_vector(unsigned short *high, unsigned short *low) 23static inline void store_NMI_vector(unsigned short *high, unsigned short *low)
28{ 24{
29 printk("Storing NMI vector\n"); 25 printk("Storing NMI vector\n");
30 *high = *((volatile unsigned short *) TRAMPOLINE_HIGH); 26 *high =
31 *low = *((volatile unsigned short *) TRAMPOLINE_LOW); 27 *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_HIGH));
28 *low =
29 *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_LOW));
32} 30}
33 31
34static inline void restore_NMI_vector(unsigned short *high, unsigned short *low) 32static inline void restore_NMI_vector(unsigned short *high, unsigned short *low)
35{ 33{
36 printk("Restoring NMI vector\n"); 34 printk("Restoring NMI vector\n");
37 *((volatile unsigned short *) TRAMPOLINE_HIGH) = *high; 35 *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_HIGH)) =
38 *((volatile unsigned short *) TRAMPOLINE_LOW) = *low; 36 *high;
37 *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_LOW)) =
38 *low;
39} 39}
40 40
41#define inquire_remote_apic(apicid) {} 41static inline void inquire_remote_apic(int apicid)
42{
43}
42 44
43#endif /* __ASM_NUMAQ_WAKECPU_H */ 45#endif /* __ASM_NUMAQ_WAKECPU_H */
diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h
index f12d37237465..294daeb3a006 100644
--- a/arch/x86/include/asm/setup.h
+++ b/arch/x86/include/asm/setup.h
@@ -16,6 +16,8 @@ static inline void visws_early_detect(void) { }
16static inline int is_visws_box(void) { return 0; } 16static inline int is_visws_box(void) { return 0; }
17#endif 17#endif
18 18
19extern int wakeup_secondary_cpu_via_nmi(int apicid, unsigned long start_eip);
20extern int wakeup_secondary_cpu_via_init(int apicid, unsigned long start_eip);
19/* 21/*
20 * Any setup quirks to be performed? 22 * Any setup quirks to be performed?
21 */ 23 */
@@ -39,6 +41,7 @@ struct x86_quirks {
39 void (*smp_read_mpc_oem)(struct mp_config_oemtable *oemtable, 41 void (*smp_read_mpc_oem)(struct mp_config_oemtable *oemtable,
40 unsigned short oemsize); 42 unsigned short oemsize);
41 int (*setup_ioapic_ids)(void); 43 int (*setup_ioapic_ids)(void);
44 int (*update_genapic)(void);
42}; 45};
43 46
44extern struct x86_quirks *x86_quirks; 47extern struct x86_quirks *x86_quirks;
diff --git a/arch/x86/kernel/es7000_32.c b/arch/x86/kernel/es7000_32.c
index 0aa2c443d600..53699c931ad4 100644
--- a/arch/x86/kernel/es7000_32.c
+++ b/arch/x86/kernel/es7000_32.c
@@ -38,8 +38,11 @@
38#include <asm/io.h> 38#include <asm/io.h>
39#include <asm/nmi.h> 39#include <asm/nmi.h>
40#include <asm/smp.h> 40#include <asm/smp.h>
41#include <asm/atomic.h>
41#include <asm/apicdef.h> 42#include <asm/apicdef.h>
42#include <mach_mpparse.h> 43#include <mach_mpparse.h>
44#include <asm/genapic.h>
45#include <asm/setup.h>
43 46
44/* 47/*
45 * ES7000 chipsets 48 * ES7000 chipsets
@@ -161,6 +164,43 @@ es7000_rename_gsi(int ioapic, int gsi)
161 return gsi; 164 return gsi;
162} 165}
163 166
167static int wakeup_secondary_cpu_via_mip(int cpu, unsigned long eip)
168{
169 unsigned long vect = 0, psaival = 0;
170
171 if (psai == NULL)
172 return -1;
173
174 vect = ((unsigned long)__pa(eip)/0x1000) << 16;
175 psaival = (0x1000000 | vect | cpu);
176
177 while (*psai & 0x1000000)
178 ;
179
180 *psai = psaival;
181
182 return 0;
183}
184
185static void noop_wait_for_deassert(atomic_t *deassert_not_used)
186{
187}
188
189static int __init es7000_update_genapic(void)
190{
191 genapic->wakeup_cpu = wakeup_secondary_cpu_via_mip;
192
193 /* MPENTIUMIII */
194 if (boot_cpu_data.x86 == 6 &&
195 (boot_cpu_data.x86_model >= 7 || boot_cpu_data.x86_model <= 11)) {
196 es7000_update_genapic_to_cluster();
197 genapic->wait_for_init_deassert = noop_wait_for_deassert;
198 genapic->wakeup_cpu = wakeup_secondary_cpu_via_mip;
199 }
200
201 return 0;
202}
203
164void __init 204void __init
165setup_unisys(void) 205setup_unisys(void)
166{ 206{
@@ -176,6 +216,8 @@ setup_unisys(void)
176 else 216 else
177 es7000_plat = ES7000_CLASSIC; 217 es7000_plat = ES7000_CLASSIC;
178 ioapic_renumber_irq = es7000_rename_gsi; 218 ioapic_renumber_irq = es7000_rename_gsi;
219
220 x86_quirks->update_genapic = es7000_update_genapic;
179} 221}
180 222
181/* 223/*
@@ -317,26 +359,6 @@ es7000_mip_write(struct mip_reg *mip_reg)
317 return status; 359 return status;
318} 360}
319 361
320int
321es7000_start_cpu(int cpu, unsigned long eip)
322{
323 unsigned long vect = 0, psaival = 0;
324
325 if (psai == NULL)
326 return -1;
327
328 vect = ((unsigned long)__pa(eip)/0x1000) << 16;
329 psaival = (0x1000000 | vect | cpu);
330
331 while (*psai & 0x1000000)
332 ;
333
334 *psai = psaival;
335
336 return 0;
337
338}
339
340void __init 362void __init
341es7000_sw_apic(void) 363es7000_sw_apic(void)
342{ 364{
diff --git a/arch/x86/kernel/genapic_64.c b/arch/x86/kernel/genapic_64.c
index 6c9bfc9e1e95..2bced78b0b8e 100644
--- a/arch/x86/kernel/genapic_64.c
+++ b/arch/x86/kernel/genapic_64.c
@@ -21,6 +21,7 @@
21#include <asm/smp.h> 21#include <asm/smp.h>
22#include <asm/ipi.h> 22#include <asm/ipi.h>
23#include <asm/genapic.h> 23#include <asm/genapic.h>
24#include <asm/setup.h>
24 25
25extern struct genapic apic_flat; 26extern struct genapic apic_flat;
26extern struct genapic apic_physflat; 27extern struct genapic apic_physflat;
@@ -53,6 +54,9 @@ void __init setup_apic_routing(void)
53 genapic = &apic_physflat; 54 genapic = &apic_physflat;
54 printk(KERN_INFO "Setting APIC routing to %s\n", genapic->name); 55 printk(KERN_INFO "Setting APIC routing to %s\n", genapic->name);
55 } 56 }
57
58 if (x86_quirks->update_genapic)
59 x86_quirks->update_genapic();
56} 60}
57 61
58/* Same for both flat and physical. */ 62/* Same for both flat and physical. */
diff --git a/arch/x86/kernel/numaq_32.c b/arch/x86/kernel/numaq_32.c
index 4caff39078e0..0deea37a53cf 100644
--- a/arch/x86/kernel/numaq_32.c
+++ b/arch/x86/kernel/numaq_32.c
@@ -31,7 +31,7 @@
31#include <asm/numaq.h> 31#include <asm/numaq.h>
32#include <asm/topology.h> 32#include <asm/topology.h>
33#include <asm/processor.h> 33#include <asm/processor.h>
34#include <asm/mpspec.h> 34#include <asm/genapic.h>
35#include <asm/e820.h> 35#include <asm/e820.h>
36#include <asm/setup.h> 36#include <asm/setup.h>
37 37
@@ -235,6 +235,13 @@ static int __init numaq_setup_ioapic_ids(void)
235 return 1; 235 return 1;
236} 236}
237 237
238static int __init numaq_update_genapic(void)
239{
240 genapic->wakeup_cpu = wakeup_secondary_cpu_via_nmi;
241
242 return 0;
243}
244
238static struct x86_quirks numaq_x86_quirks __initdata = { 245static struct x86_quirks numaq_x86_quirks __initdata = {
239 .arch_pre_time_init = numaq_pre_time_init, 246 .arch_pre_time_init = numaq_pre_time_init,
240 .arch_time_init = NULL, 247 .arch_time_init = NULL,
@@ -250,6 +257,7 @@ static struct x86_quirks numaq_x86_quirks __initdata = {
250 .mpc_oem_pci_bus = mpc_oem_pci_bus, 257 .mpc_oem_pci_bus = mpc_oem_pci_bus,
251 .smp_read_mpc_oem = smp_read_mpc_oem, 258 .smp_read_mpc_oem = smp_read_mpc_oem,
252 .setup_ioapic_ids = numaq_setup_ioapic_ids, 259 .setup_ioapic_ids = numaq_setup_ioapic_ids,
260 .update_genapic = numaq_update_genapic,
253}; 261};
254 262
255void numaq_mps_oem_check(struct mp_config_table *mpc, char *oem, 263void numaq_mps_oem_check(struct mp_config_table *mpc, char *oem,
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 9d5674f7b6cc..f5096a6bf4ed 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -583,7 +583,20 @@ static int __init setup_elfcorehdr(char *arg)
583early_param("elfcorehdr", setup_elfcorehdr); 583early_param("elfcorehdr", setup_elfcorehdr);
584#endif 584#endif
585 585
586static struct x86_quirks default_x86_quirks __initdata; 586static int __init default_update_genapic(void)
587{
588#ifdef CONFIG_X86_SMP
589# if defined(CONFIG_X86_GENERICARCH) || defined(CONFIG_X86_64)
590 genapic->wakeup_cpu = wakeup_secondary_cpu_via_init;
591# endif
592#endif
593
594 return 0;
595}
596
597static struct x86_quirks default_x86_quirks __initdata = {
598 .update_genapic = default_update_genapic,
599};
587 600
588struct x86_quirks *x86_quirks __initdata = &default_x86_quirks; 601struct x86_quirks *x86_quirks __initdata = &default_x86_quirks;
589 602
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 7b1093397319..0e9f446269f4 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -62,6 +62,7 @@
62#include <asm/mtrr.h> 62#include <asm/mtrr.h>
63#include <asm/vmi.h> 63#include <asm/vmi.h>
64#include <asm/genapic.h> 64#include <asm/genapic.h>
65#include <asm/setup.h>
65#include <linux/mc146818rtc.h> 66#include <linux/mc146818rtc.h>
66 67
67#include <mach_apic.h> 68#include <mach_apic.h>
@@ -536,7 +537,7 @@ static void impress_friends(void)
536 pr_debug("Before bogocount - setting activated=1.\n"); 537 pr_debug("Before bogocount - setting activated=1.\n");
537} 538}
538 539
539static inline void __inquire_remote_apic(int apicid) 540void __inquire_remote_apic(int apicid)
540{ 541{
541 unsigned i, regs[] = { APIC_ID >> 4, APIC_LVR >> 4, APIC_SPIV >> 4 }; 542 unsigned i, regs[] = { APIC_ID >> 4, APIC_LVR >> 4, APIC_SPIV >> 4 };
542 char *names[] = { "ID", "VERSION", "SPIV" }; 543 char *names[] = { "ID", "VERSION", "SPIV" };
@@ -575,14 +576,13 @@ static inline void __inquire_remote_apic(int apicid)
575 } 576 }
576} 577}
577 578
578#ifdef WAKE_SECONDARY_VIA_NMI
579/* 579/*
580 * Poke the other CPU in the eye via NMI to wake it up. Remember that the normal 580 * Poke the other CPU in the eye via NMI to wake it up. Remember that the normal
581 * INIT, INIT, STARTUP sequence will reset the chip hard for us, and this 581 * INIT, INIT, STARTUP sequence will reset the chip hard for us, and this
582 * won't ... remember to clear down the APIC, etc later. 582 * won't ... remember to clear down the APIC, etc later.
583 */ 583 */
584static int __devinit 584int __devinit
585wakeup_secondary_cpu(int logical_apicid, unsigned long start_eip) 585wakeup_secondary_cpu_via_nmi(int logical_apicid, unsigned long start_eip)
586{ 586{
587 unsigned long send_status, accept_status = 0; 587 unsigned long send_status, accept_status = 0;
588 int maxlvt; 588 int maxlvt;
@@ -599,7 +599,7 @@ wakeup_secondary_cpu(int logical_apicid, unsigned long start_eip)
599 * Give the other CPU some time to accept the IPI. 599 * Give the other CPU some time to accept the IPI.
600 */ 600 */
601 udelay(200); 601 udelay(200);
602 if (APIC_INTEGRATED(apic_version[phys_apicid])) { 602 if (APIC_INTEGRATED(apic_version[boot_cpu_physical_apicid])) {
603 maxlvt = lapic_get_maxlvt(); 603 maxlvt = lapic_get_maxlvt();
604 if (maxlvt > 3) /* Due to the Pentium erratum 3AP. */ 604 if (maxlvt > 3) /* Due to the Pentium erratum 3AP. */
605 apic_write(APIC_ESR, 0); 605 apic_write(APIC_ESR, 0);
@@ -614,11 +614,9 @@ wakeup_secondary_cpu(int logical_apicid, unsigned long start_eip)
614 614
615 return (send_status | accept_status); 615 return (send_status | accept_status);
616} 616}
617#endif /* WAKE_SECONDARY_VIA_NMI */
618 617
619#ifdef WAKE_SECONDARY_VIA_INIT 618int __devinit
620static int __devinit 619wakeup_secondary_cpu_via_init(int phys_apicid, unsigned long start_eip)
621wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip)
622{ 620{
623 unsigned long send_status, accept_status = 0; 621 unsigned long send_status, accept_status = 0;
624 int maxlvt, num_starts, j; 622 int maxlvt, num_starts, j;
@@ -737,7 +735,6 @@ wakeup_secondary_cpu(int phys_apicid, unsigned long start_eip)
737 735
738 return (send_status | accept_status); 736 return (send_status | accept_status);
739} 737}
740#endif /* WAKE_SECONDARY_VIA_INIT */
741 738
742struct create_idle { 739struct create_idle {
743 struct work_struct work; 740 struct work_struct work;
diff --git a/arch/x86/mach-generic/bigsmp.c b/arch/x86/mach-generic/bigsmp.c
index 3c3b471ea496..3624a364b7f3 100644
--- a/arch/x86/mach-generic/bigsmp.c
+++ b/arch/x86/mach-generic/bigsmp.c
@@ -17,6 +17,7 @@
17#include <asm/bigsmp/apic.h> 17#include <asm/bigsmp/apic.h>
18#include <asm/bigsmp/ipi.h> 18#include <asm/bigsmp/ipi.h>
19#include <asm/mach-default/mach_mpparse.h> 19#include <asm/mach-default/mach_mpparse.h>
20#include <asm/mach-default/mach_wakecpu.h>
20 21
21static int dmi_bigsmp; /* can be set by dmi scanners */ 22static int dmi_bigsmp; /* can be set by dmi scanners */
22 23
diff --git a/arch/x86/mach-generic/default.c b/arch/x86/mach-generic/default.c
index 9e835a11a13a..e63a4a76d8cd 100644
--- a/arch/x86/mach-generic/default.c
+++ b/arch/x86/mach-generic/default.c
@@ -16,6 +16,7 @@
16#include <asm/mach-default/mach_apic.h> 16#include <asm/mach-default/mach_apic.h>
17#include <asm/mach-default/mach_ipi.h> 17#include <asm/mach-default/mach_ipi.h>
18#include <asm/mach-default/mach_mpparse.h> 18#include <asm/mach-default/mach_mpparse.h>
19#include <asm/mach-default/mach_wakecpu.h>
19 20
20/* should be called last. */ 21/* should be called last. */
21static int probe_default(void) 22static int probe_default(void)
diff --git a/arch/x86/mach-generic/es7000.c b/arch/x86/mach-generic/es7000.c
index 28459cab3ddb..7b4e6d0d1690 100644
--- a/arch/x86/mach-generic/es7000.c
+++ b/arch/x86/mach-generic/es7000.c
@@ -16,7 +16,19 @@
16#include <asm/es7000/apic.h> 16#include <asm/es7000/apic.h>
17#include <asm/es7000/ipi.h> 17#include <asm/es7000/ipi.h>
18#include <asm/es7000/mpparse.h> 18#include <asm/es7000/mpparse.h>
19#include <asm/es7000/wakecpu.h> 19#include <asm/mach-default/mach_wakecpu.h>
20
21void __init es7000_update_genapic_to_cluster(void)
22{
23 genapic->target_cpus = target_cpus_cluster;
24 genapic->int_delivery_mode = INT_DELIVERY_MODE_CLUSTER;
25 genapic->int_dest_mode = INT_DEST_MODE_CLUSTER;
26 genapic->no_balance_irq = NO_BALANCE_IRQ_CLUSTER;
27
28 genapic->init_apic_ldr = init_apic_ldr_cluster;
29
30 genapic->cpu_mask_to_apicid = cpu_mask_to_apicid_cluster;
31}
20 32
21static int probe_es7000(void) 33static int probe_es7000(void)
22{ 34{
diff --git a/arch/x86/mach-generic/probe.c b/arch/x86/mach-generic/probe.c
index 5a7e4619e1c4..c346d9d0226f 100644
--- a/arch/x86/mach-generic/probe.c
+++ b/arch/x86/mach-generic/probe.c
@@ -15,6 +15,7 @@
15#include <asm/mpspec.h> 15#include <asm/mpspec.h>
16#include <asm/apicdef.h> 16#include <asm/apicdef.h>
17#include <asm/genapic.h> 17#include <asm/genapic.h>
18#include <asm/setup.h>
18 19
19extern struct genapic apic_numaq; 20extern struct genapic apic_numaq;
20extern struct genapic apic_summit; 21extern struct genapic apic_summit;
@@ -57,6 +58,9 @@ static int __init parse_apic(char *arg)
57 } 58 }
58 } 59 }
59 60
61 if (x86_quirks->update_genapic)
62 x86_quirks->update_genapic();
63
60 /* Parsed again by __setup for debug/verbose */ 64 /* Parsed again by __setup for debug/verbose */
61 return 0; 65 return 0;
62} 66}
@@ -72,12 +76,15 @@ void __init generic_bigsmp_probe(void)
72 * - we find more than 8 CPUs in acpi LAPIC listing with xAPIC support 76 * - we find more than 8 CPUs in acpi LAPIC listing with xAPIC support
73 */ 77 */
74 78
75 if (!cmdline_apic && genapic == &apic_default) 79 if (!cmdline_apic && genapic == &apic_default) {
76 if (apic_bigsmp.probe()) { 80 if (apic_bigsmp.probe()) {
77 genapic = &apic_bigsmp; 81 genapic = &apic_bigsmp;
82 if (x86_quirks->update_genapic)
83 x86_quirks->update_genapic();
78 printk(KERN_INFO "Overriding APIC driver with %s\n", 84 printk(KERN_INFO "Overriding APIC driver with %s\n",
79 genapic->name); 85 genapic->name);
80 } 86 }
87 }
81#endif 88#endif
82} 89}
83 90
@@ -94,6 +101,9 @@ void __init generic_apic_probe(void)
94 /* Not visible without early console */ 101 /* Not visible without early console */
95 if (!apic_probe[i]) 102 if (!apic_probe[i])
96 panic("Didn't find an APIC driver"); 103 panic("Didn't find an APIC driver");
104
105 if (x86_quirks->update_genapic)
106 x86_quirks->update_genapic();
97 } 107 }
98 printk(KERN_INFO "Using APIC driver %s\n", genapic->name); 108 printk(KERN_INFO "Using APIC driver %s\n", genapic->name);
99} 109}
@@ -108,6 +118,8 @@ int __init mps_oem_check(struct mp_config_table *mpc, char *oem,
108 if (apic_probe[i]->mps_oem_check(mpc, oem, productid)) { 118 if (apic_probe[i]->mps_oem_check(mpc, oem, productid)) {
109 if (!cmdline_apic) { 119 if (!cmdline_apic) {
110 genapic = apic_probe[i]; 120 genapic = apic_probe[i];
121 if (x86_quirks->update_genapic)
122 x86_quirks->update_genapic();
111 printk(KERN_INFO "Switched to APIC driver `%s'.\n", 123 printk(KERN_INFO "Switched to APIC driver `%s'.\n",
112 genapic->name); 124 genapic->name);
113 } 125 }
@@ -124,6 +136,8 @@ int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
124 if (apic_probe[i]->acpi_madt_oem_check(oem_id, oem_table_id)) { 136 if (apic_probe[i]->acpi_madt_oem_check(oem_id, oem_table_id)) {
125 if (!cmdline_apic) { 137 if (!cmdline_apic) {
126 genapic = apic_probe[i]; 138 genapic = apic_probe[i];
139 if (x86_quirks->update_genapic)
140 x86_quirks->update_genapic();
127 printk(KERN_INFO "Switched to APIC driver `%s'.\n", 141 printk(KERN_INFO "Switched to APIC driver `%s'.\n",
128 genapic->name); 142 genapic->name);
129 } 143 }
diff --git a/arch/x86/mach-generic/summit.c b/arch/x86/mach-generic/summit.c
index 6272b5e69da6..2c6d234e0009 100644
--- a/arch/x86/mach-generic/summit.c
+++ b/arch/x86/mach-generic/summit.c
@@ -16,6 +16,7 @@
16#include <asm/summit/apic.h> 16#include <asm/summit/apic.h>
17#include <asm/summit/ipi.h> 17#include <asm/summit/ipi.h>
18#include <asm/summit/mpparse.h> 18#include <asm/summit/mpparse.h>
19#include <asm/mach-default/mach_wakecpu.h>
19 20
20static int probe_summit(void) 21static int probe_summit(void)
21{ 22{