diff options
Diffstat (limited to 'sys/dev/isa/isavar.h')
| -rw-r--r-- | sys/dev/isa/isavar.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/sys/dev/isa/isavar.h b/sys/dev/isa/isavar.h index dfa2b092e9c..40123a5a2b7 100644 --- a/sys/dev/isa/isavar.h +++ b/sys/dev/isa/isavar.h @@ -1,4 +1,4 @@ -/* $OpenBSD: isavar.h,v 1.24 1997/12/25 09:22:44 downsj Exp $ */ +/* $OpenBSD: isavar.h,v 1.25 1997/12/25 12:06:49 downsj Exp $ */ /* $NetBSD: isavar.h,v 1.24 1996/10/21 22:41:11 thorpej Exp $ */ /* $NetBSD: isapnpvar.h,v 1.5.4.2 1997/10/29 00:40:49 thorpej Exp $ */ @@ -282,8 +282,20 @@ struct isa_softc { * via isa_attach_args. */ bus_space_handle_t sc_delaybah; + + int8_t sc_drq; /* DRQ usage tracking */ }; +/* + * Macros for sc_drq access. + */ +#define isa_drq_alloc(_sc, _drq) \ + (((struct isa_softc *)(_sc))->sc_drq |= (1 << (_drq))) +#define isa_drq_free(_sc, _drq) \ + (((struct isa_softc *)(_sc))->sc_drq &= ~(1 << (_drq))) +#define isa_drq_isfree(_sc, _drq) \ + !((((struct isa_softc *)(_sc))->sc_drq << (_drq)) & 1) + #define cf_iobase cf_loc[0] #define cf_iosize cf_loc[1] #define cf_maddr cf_loc[2] |