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| author | neel <neel@FreeBSD.org> | 2015-03-14 00:30:41 +0000 |
|---|---|---|
| committer | neel <neel@FreeBSD.org> | 2015-03-14 00:30:41 +0000 |
| commit | 771dc2cc82487fde44a71d30533ccde7bf753a8a (patch) | |
| tree | b7bd2d7ea1bcdd0788cff1e68a21b7910126728c /sys/x86/include/apicvar.h | |
| parent | 43c1b0e92f334dc7dd539cbebd72ecc170cbbf22 (diff) | |
| download | FreeBSD-src-771dc2cc82487fde44a71d30533ccde7bf753a8a.zip FreeBSD-src-771dc2cc82487fde44a71d30533ccde7bf753a8a.tar.gz | |
Add x86 specific APIs 'lapic_ipi_alloc()' and 'lapic_ipi_free()' to allow IPI
vectors to be dynamically allocated. This allows kernel modules like vmm.ko
to allocate unique IPI slots when loaded (as opposed to hard allocating one
or more vectors).
Also, reorganize the fixed IPI vectors to create a contiguous space for
dynamic IPI allocation.
Reviewed by: kib, jhb
Differential Revision: https://reviews.freebsd.org/D2042
Diffstat (limited to 'sys/x86/include/apicvar.h')
| -rw-r--r-- | sys/x86/include/apicvar.h | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/sys/x86/include/apicvar.h b/sys/x86/include/apicvar.h index 048b646..0ed65de 100644 --- a/sys/x86/include/apicvar.h +++ b/sys/x86/include/apicvar.h @@ -111,11 +111,8 @@ #define IPI_INVLPG (APIC_IPI_INTS + 2) #define IPI_INVLRNG (APIC_IPI_INTS + 3) #define IPI_INVLCACHE (APIC_IPI_INTS + 4) -#ifdef __i386__ -#define IPI_LAZYPMAP (APIC_IPI_INTS + 5) /* Lazy pmap release. */ -#endif /* Vector to handle bitmap based IPIs */ -#define IPI_BITMAP_VECTOR (APIC_IPI_INTS + 6) +#define IPI_BITMAP_VECTOR (APIC_IPI_INTS + 5) /* IPIs handled by IPI_BITMAP_VECTOR */ #define IPI_AST 0 /* Generate software trap. */ @@ -124,8 +121,15 @@ #define IPI_BITMAP_LAST IPI_HARDCLOCK #define IPI_IS_BITMAPED(x) ((x) <= IPI_BITMAP_LAST) -#define IPI_STOP (APIC_IPI_INTS + 7) /* Stop CPU until restarted. */ -#define IPI_SUSPEND (APIC_IPI_INTS + 8) /* Suspend CPU until restarted. */ +#define IPI_STOP (APIC_IPI_INTS + 6) /* Stop CPU until restarted. */ +#define IPI_SUSPEND (APIC_IPI_INTS + 7) /* Suspend CPU until restarted. */ +#ifdef __i386__ +#define IPI_LAZYPMAP (APIC_IPI_INTS + 8) /* Lazy pmap release. */ +#define IPI_DYN_FIRST (APIC_IPI_INTS + 9) +#else +#define IPI_DYN_FIRST (APIC_IPI_INTS + 8) +#endif +#define IPI_DYN_LAST (254) /* IPIs allocated at runtime */ /* * IPI_STOP_HARD does not need to occupy a slot in the IPI vector space since @@ -224,6 +228,8 @@ struct apic_ops { void (*ipi_raw)(register_t, u_int); void (*ipi_vectored)(u_int, int); int (*ipi_wait)(int); + int (*ipi_alloc)(inthand_t *ipifunc); + void (*ipi_free)(int vector); /* LVT */ int (*set_lvt_mask)(u_int, u_int, u_char); @@ -397,6 +403,20 @@ lapic_ipi_wait(int delay) } static inline int +lapic_ipi_alloc(inthand_t *ipifunc) +{ + + return (apic_ops.ipi_alloc(ipifunc)); +} + +static inline void +lapic_ipi_free(int vector) +{ + + return (apic_ops.ipi_free(vector)); +} + +static inline int lapic_set_lvt_mask(u_int apic_id, u_int lvt, u_char masked) { |
