diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-i386/smp.h |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-i386/smp.h')
-rw-r--r-- | include/asm-i386/smp.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/include/asm-i386/smp.h b/include/asm-i386/smp.h new file mode 100644 index 000000000000..dd1491225d51 --- /dev/null +++ b/include/asm-i386/smp.h @@ -0,0 +1,90 @@ +#ifndef __ASM_SMP_H +#define __ASM_SMP_H + +/* + * We need the APIC definitions automatically as part of 'smp.h' + */ +#ifndef __ASSEMBLY__ +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/threads.h> +#include <linux/cpumask.h> +#endif + +#ifdef CONFIG_X86_LOCAL_APIC +#ifndef __ASSEMBLY__ +#include <asm/fixmap.h> +#include <asm/bitops.h> +#include <asm/mpspec.h> +#ifdef CONFIG_X86_IO_APIC +#include <asm/io_apic.h> +#endif +#include <asm/apic.h> +#endif +#endif + +#define BAD_APICID 0xFFu +#ifdef CONFIG_SMP +#ifndef __ASSEMBLY__ + +/* + * Private routines/data + */ + +extern void smp_alloc_memory(void); +extern int pic_mode; +extern int smp_num_siblings; +extern cpumask_t cpu_sibling_map[]; + +extern void smp_flush_tlb(void); +extern void smp_message_irq(int cpl, void *dev_id, struct pt_regs *regs); +extern void smp_invalidate_rcv(void); /* Process an NMI */ +extern void (*mtrr_hook) (void); +extern void zap_low_mappings (void); + +#define MAX_APICID 256 +extern u8 x86_cpu_to_apicid[]; + +/* + * This function is needed by all SMP systems. It must _always_ be valid + * from the initial startup. We map APIC_BASE very early in page_setup(), + * so this is correct in the x86 case. + */ +#define __smp_processor_id() (current_thread_info()->cpu) + +extern cpumask_t cpu_callout_map; +extern cpumask_t cpu_callin_map; +#define cpu_possible_map cpu_callout_map + +/* We don't mark CPUs online until __cpu_up(), so we need another measure */ +static inline int num_booting_cpus(void) +{ + return cpus_weight(cpu_callout_map); +} + +#ifdef CONFIG_X86_LOCAL_APIC + +#ifdef APIC_DEFINITION +extern int hard_smp_processor_id(void); +#else +#include <mach_apicdef.h> +static inline int hard_smp_processor_id(void) +{ + /* we don't want to mark this access volatile - bad code generation */ + return GET_APIC_ID(*(unsigned long *)(APIC_BASE+APIC_ID)); +} +#endif + +static __inline int logical_smp_processor_id(void) +{ + /* we don't want to mark this access volatile - bad code generation */ + return GET_APIC_LOGICAL_ID(*(unsigned long *)(APIC_BASE+APIC_LDR)); +} + +#endif +#endif /* !__ASSEMBLY__ */ + +#define NO_PROC_ID 0xFF /* No processor magic marker */ + +#endif +#endif |