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| author | Jeff Garzik <jeff@garzik.org> | 2006-09-24 01:52:47 -0400 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-09-24 01:52:47 -0400 |
| commit | 23930fa1cebfea6f79881c588ccd1b0781e49e3f (patch) | |
| tree | 36d29e3f83661c4f5f45b6f74ac0d5f9886867a8 /include/asm-powerpc/rtas.h | |
| parent | 36b35a5be0e4b406acd816e2122d153e875105be (diff) | |
| parent | 4f5537de7c1531398e84e18a24f667e49cc94208 (diff) | |
Merge branch 'master' into upstream
Diffstat (limited to 'include/asm-powerpc/rtas.h')
| -rw-r--r-- | include/asm-powerpc/rtas.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/asm-powerpc/rtas.h b/include/asm-powerpc/rtas.h index 82a27e9a041..d34f9e1f242 100644 --- a/include/asm-powerpc/rtas.h +++ b/include/asm-powerpc/rtas.h @@ -230,5 +230,21 @@ extern unsigned long rtas_rmo_buf; #define GLOBAL_INTERRUPT_QUEUE 9005 +/** + * rtas_config_addr - Format a busno, devfn and reg for RTAS. + * @busno: The bus number. + * @devfn: The device and function number as encoded by PCI_DEVFN(). + * @reg: The register number. + * + * This function encodes the given busno, devfn and register number as + * required for RTAS calls that take a "config_addr" parameter. + * See PAPR requirement 7.3.4-1 for more info. + */ +static inline u32 rtas_config_addr(int busno, int devfn, int reg) +{ + return ((reg & 0xf00) << 20) | ((busno & 0xff) << 16) | + (devfn << 8) | (reg & 0xff); +} + #endif /* __KERNEL__ */ #endif /* _POWERPC_RTAS_H */ |