diff options
| author | Olof Johansson <olof@lixom.net> | 2007-01-28 23:33:18 -0600 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-02-07 14:03:19 +1100 |
| commit | 7df2457db83bc922fcc8b462526b77f1ffe8c84b (patch) | |
| tree | 7029d9e27b858e435c2fc4ce9a6d83a2b028e290 /include/asm-powerpc/mpic.h | |
| parent | 6529c13dfe413e437ad1ed0e97783dcf69137114 (diff) | |
| download | lwn-7df2457db83bc922fcc8b462526b77f1ffe8c84b.tar.gz lwn-7df2457db83bc922fcc8b462526b77f1ffe8c84b.zip | |
[POWERPC] MPIC: support more than 256 sources
Allow more than the default 256 MPIC sources. Allocates a new flag
(MPIC_LARGE_VECTORS) to be used by platform code when instantiating
the mpic.
I picked 11 bits worth right now since it would cover the number of
sources on any hardware I have seen. It can always be increased later
if needed.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/mpic.h')
| -rw-r--r-- | include/asm-powerpc/mpic.h | 24 |
1 files changed, 9 insertions, 15 deletions
diff --git a/include/asm-powerpc/mpic.h b/include/asm-powerpc/mpic.h index b71e7b32a555..cb204a71e912 100644 --- a/include/asm-powerpc/mpic.h +++ b/include/asm-powerpc/mpic.h @@ -103,21 +103,6 @@ #define MPIC_MAX_ISU 32 /* - * Special vector numbers (internal use only) - */ -#define MPIC_VEC_SPURRIOUS 255 -#define MPIC_VEC_IPI_3 254 -#define MPIC_VEC_IPI_2 253 -#define MPIC_VEC_IPI_1 252 -#define MPIC_VEC_IPI_0 251 - -/* unused */ -#define MPIC_VEC_TIMER_3 250 -#define MPIC_VEC_TIMER_2 249 -#define MPIC_VEC_TIMER_1 248 -#define MPIC_VEC_TIMER_0 247 - -/* * Tsi108 implementation of MPIC has many differences from the original one */ @@ -276,6 +261,13 @@ struct mpic unsigned char *senses; unsigned int senses_count; + /* vector numbers used for internal sources (ipi/timers) */ + unsigned int ipi_vecs[4]; + unsigned int timer_vecs[4]; + + /* Spurious vector to program into unused sources */ + unsigned int spurious_vec; + #ifdef CONFIG_MPIC_BROKEN_U3 /* The fixup table */ struct mpic_irq_fixup *fixups; @@ -332,6 +324,8 @@ struct mpic #define MPIC_NO_PTHROU_DIS 0x00000040 /* DCR based MPIC */ #define MPIC_USES_DCR 0x00000080 +/* MPIC has 11-bit vector fields (or larger) */ +#define MPIC_LARGE_VECTORS 0x00000100 /* MPIC HW modification ID */ #define MPIC_REGSET_MASK 0xf0000000 |