diff options
Diffstat (limited to 'sys/arch/sparc64/include/z8530var.h')
| -rw-r--r-- | sys/arch/sparc64/include/z8530var.h | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/sys/arch/sparc64/include/z8530var.h b/sys/arch/sparc64/include/z8530var.h index 23ec9c047a0..125c369266c 100644 --- a/sys/arch/sparc64/include/z8530var.h +++ b/sys/arch/sparc64/include/z8530var.h @@ -1,4 +1,4 @@ -/* $OpenBSD: z8530var.h,v 1.8 2013/04/21 14:44:16 sebastia Exp $ */ +/* $OpenBSD: z8530var.h,v 1.9 2024/03/29 21:17:13 miod Exp $ */ /* $NetBSD: z8530var.h,v 1.4 2000/11/08 23:41:42 eeh Exp $ */ /* @@ -60,15 +60,7 @@ struct zsc_softc { /* * Functions to read and write individual registers in a channel. * The ZS chip requires a 1.6 uSec. recovery time between accesses. - * On the SparcStation the recovery time is handled in hardware. - * On the older Sun4 machine it isn't, and software must do it. - * - * However, it *is* a problem on some Sun4m's (i.e. the SS20) (XXX: why?). - * Thus we leave in the delay (done in the functions below). - * XXX: (ABB) Think about this more. - * - * The functions below could be macros instead if we are concerned - * about the function call overhead where ZS_DELAY does nothing. + * On sparc64, the recovery time is handled in hardware. */ u_char zs_read_reg(struct zs_chanstate *cs, u_char reg); |