diff options
| -rw-r--r-- | arch/x86/kernel/bigsmp_32.c | 43 |
1 files changed, 24 insertions, 19 deletions
diff --git a/arch/x86/kernel/bigsmp_32.c b/arch/x86/kernel/bigsmp_32.c index f49af36351fa..41732abd7004 100644 --- a/arch/x86/kernel/bigsmp_32.c +++ b/arch/x86/kernel/bigsmp_32.c | |||
| @@ -1,27 +1,26 @@ | |||
| 1 | /* | 1 | /* |
| 2 | * APIC driver for "bigsmp" XAPIC machines with more than 8 virtual CPUs. | 2 | * APIC driver for "bigsmp" xAPIC machines with more than 8 virtual CPUs. |
| 3 | * | ||
| 3 | * Drives the local APIC in "clustered mode". | 4 | * Drives the local APIC in "clustered mode". |
| 4 | */ | 5 | */ |
| 5 | #include <linux/threads.h> | 6 | #include <linux/threads.h> |
| 6 | #include <linux/cpumask.h> | 7 | #include <linux/cpumask.h> |
| 7 | #include <asm/mpspec.h> | ||
| 8 | #include <asm/apic.h> | ||
| 9 | #include <asm/fixmap.h> | ||
| 10 | #include <asm/apicdef.h> | ||
| 11 | #include <asm/ipi.h> | ||
| 12 | #include <linux/kernel.h> | 8 | #include <linux/kernel.h> |
| 13 | #include <linux/init.h> | 9 | #include <linux/init.h> |
| 14 | #include <linux/dmi.h> | 10 | #include <linux/dmi.h> |
| 15 | #include <linux/smp.h> | 11 | #include <linux/smp.h> |
| 16 | 12 | ||
| 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> | ||
| 17 | 18 | ||
| 18 | static inline unsigned bigsmp_get_apic_id(unsigned long x) | 19 | static inline unsigned bigsmp_get_apic_id(unsigned long x) |
| 19 | { | 20 | { |
| 20 | return (x >> 24) & 0xFF; | 21 | return (x >> 24) & 0xFF; |
| 21 | } | 22 | } |
| 22 | 23 | ||
| 23 | #define xapic_phys_to_log_apicid(cpu) (per_cpu(x86_bios_cpu_apicid, cpu)) | ||
| 24 | |||
| 25 | static inline int bigsmp_apic_id_registered(void) | 24 | static inline int bigsmp_apic_id_registered(void) |
| 26 | { | 25 | { |
| 27 | return 1; | 26 | return 1; |
| @@ -36,8 +35,6 @@ static inline const cpumask_t *bigsmp_target_cpus(void) | |||
| 36 | #endif | 35 | #endif |
| 37 | } | 36 | } |
| 38 | 37 | ||
| 39 | #define APIC_DFR_VALUE (APIC_DFR_FLAT) | ||
| 40 | |||
| 41 | static inline unsigned long | 38 | static inline unsigned long |
| 42 | bigsmp_check_apicid_used(physid_mask_t bitmap, int apicid) | 39 | bigsmp_check_apicid_used(physid_mask_t bitmap, int apicid) |
| 43 | { | 40 | { |
| @@ -52,9 +49,11 @@ static inline unsigned long bigsmp_check_apicid_present(int bit) | |||
| 52 | static inline unsigned long calculate_ldr(int cpu) | 49 | static inline unsigned long calculate_ldr(int cpu) |
| 53 | { | 50 | { |
| 54 | unsigned long val, id; | 51 | unsigned long val, id; |
| 52 | |||
| 55 | val = apic_read(APIC_LDR) & ~APIC_LDR_MASK; | 53 | val = apic_read(APIC_LDR) & ~APIC_LDR_MASK; |
| 56 | id = xapic_phys_to_log_apicid(cpu); | 54 | id = per_cpu(x86_bios_cpu_apicid, cpu); |
| 57 | val |= SET_APIC_LOGICAL_ID(id); | 55 | val |= SET_APIC_LOGICAL_ID(id); |
| 56 | |||
| 58 | return val; | 57 | return val; |
| 59 | } | 58 | } |
| 60 | 59 | ||
| @@ -70,15 +69,16 @@ static inline void bigsmp_init_apic_ldr(void) | |||
| 70 | unsigned long val; | 69 | unsigned long val; |
| 71 | int cpu = smp_processor_id(); | 70 | int cpu = smp_processor_id(); |
| 72 | 71 | ||
| 73 | apic_write(APIC_DFR, APIC_DFR_VALUE); | 72 | apic_write(APIC_DFR, APIC_DFR_FLAT); |
| 74 | val = calculate_ldr(cpu); | 73 | val = calculate_ldr(cpu); |
| 75 | apic_write(APIC_LDR, val); | 74 | apic_write(APIC_LDR, val); |
| 76 | } | 75 | } |
| 77 | 76 | ||
| 78 | static inline void bigsmp_setup_apic_routing(void) | 77 | static inline void bigsmp_setup_apic_routing(void) |
| 79 | { | 78 | { |
| 80 | printk("Enabling APIC mode: %s. Using %d I/O APICs\n", | 79 | printk(KERN_INFO |
| 81 | "Physflat", nr_ioapics); | 80 | "Enabling APIC mode: Physflat. Using %d I/O APICs\n", |
| 81 | nr_ioapics); | ||
| 82 | } | 82 | } |
| 83 | 83 | ||
| 84 | static inline int bigsmp_apicid_to_node(int logical_apicid) | 84 | static inline int bigsmp_apicid_to_node(int logical_apicid) |
| @@ -100,6 +100,7 @@ static inline physid_mask_t bigsmp_apicid_to_cpu_present(int phys_apicid) | |||
| 100 | } | 100 | } |
| 101 | 101 | ||
| 102 | extern u8 cpu_2_logical_apicid[]; | 102 | extern u8 cpu_2_logical_apicid[]; |
| 103 | |||
| 103 | /* Mapping from cpu number to logical apicid */ | 104 | /* Mapping from cpu number to logical apicid */ |
| 104 | static inline int bigsmp_cpu_to_logical_apicid(int cpu) | 105 | static inline int bigsmp_cpu_to_logical_apicid(int cpu) |
| 105 | { | 106 | { |
| @@ -175,21 +176,24 @@ static int hp_ht_bigsmp(const struct dmi_system_id *d) | |||
| 175 | { | 176 | { |
| 176 | printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident); | 177 | printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident); |
| 177 | dmi_bigsmp = 1; | 178 | dmi_bigsmp = 1; |
| 179 | |||
| 178 | return 0; | 180 | return 0; |
| 179 | } | 181 | } |
| 180 | 182 | ||
| 181 | 183 | ||
| 182 | static const struct dmi_system_id bigsmp_dmi_table[] = { | 184 | static const struct dmi_system_id bigsmp_dmi_table[] = { |
| 183 | { hp_ht_bigsmp, "HP ProLiant DL760 G2", | 185 | { hp_ht_bigsmp, "HP ProLiant DL760 G2", |
| 184 | { DMI_MATCH(DMI_BIOS_VENDOR, "HP"), | 186 | { DMI_MATCH(DMI_BIOS_VENDOR, "HP"), |
| 185 | DMI_MATCH(DMI_BIOS_VERSION, "P44-"),} | 187 | DMI_MATCH(DMI_BIOS_VERSION, "P44-"), |
| 188 | } | ||
| 186 | }, | 189 | }, |
| 187 | 190 | ||
| 188 | { hp_ht_bigsmp, "HP ProLiant DL740", | 191 | { hp_ht_bigsmp, "HP ProLiant DL740", |
| 189 | { DMI_MATCH(DMI_BIOS_VENDOR, "HP"), | 192 | { DMI_MATCH(DMI_BIOS_VENDOR, "HP"), |
| 190 | DMI_MATCH(DMI_BIOS_VERSION, "P47-"),} | 193 | DMI_MATCH(DMI_BIOS_VERSION, "P47-"), |
| 194 | } | ||
| 191 | }, | 195 | }, |
| 192 | { } | 196 | { } /* NULL entry stops DMI scanning */ |
| 193 | }; | 197 | }; |
| 194 | 198 | ||
| 195 | static void bigsmp_vector_allocation_domain(int cpu, cpumask_t *retmask) | 199 | static void bigsmp_vector_allocation_domain(int cpu, cpumask_t *retmask) |
| @@ -204,6 +208,7 @@ static int probe_bigsmp(void) | |||
| 204 | dmi_bigsmp = 1; | 208 | dmi_bigsmp = 1; |
| 205 | else | 209 | else |
| 206 | dmi_check_system(bigsmp_dmi_table); | 210 | dmi_check_system(bigsmp_dmi_table); |
| 211 | |||
| 207 | return dmi_bigsmp; | 212 | return dmi_bigsmp; |
| 208 | } | 213 | } |
| 209 | 214 | ||
