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back date this file to version 1.155 which works on the shark.

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This commit is contained in:
mrg 1999-03-31 12:44:04 +00:00
parent 920344b9c2
commit 833fb0ac7f
1 changed files with 12 additions and 13 deletions
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25
sys/dev/ic/com.c
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@ -1,4 +1,4 @@
/* $NetBSD: com.c,v 1.158 1999/03/29 13:40:41 mycroft Exp $ */
/* $NetBSD: com.c,v 1.159 1999/03/31 12:44:04 mrg Exp $ */
/*-
* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
@ -223,10 +223,6 @@ void com_kgdb_putc __P((void *, int));
#define COM_ISALIVE(sc) ((sc)->enabled != 0 && \
ISSET((sc)->sc_dev.dv_flags, DVF_ACTIVE))
#define BR BUS_SPACE_BARRIER_READ
#define BW BUS_SPACE_BARRIER_WRITE
#define COM_BARRIER(t, h, f) bus_space_barrier((t), (h), 0, COM_NPORTS, (f))
int
comspeed(speed, frequency)
long speed, frequency;
@ -2174,21 +2170,24 @@ com_common_putc(iot, ioh, c)
int c;
{
int s = splserial();
u_char stat;
int timo;
/* wait for any pending transmission to finish */
timo = 1500;
while (!ISSET(bus_space_read_1(iot, ioh, com_lsr), LSR_TXRDY) && --timo)
delay(100);
timo = 50000;
while (!ISSET(stat = bus_space_read_1(iot, ioh, com_lsr), LSR_TXRDY)
&& --timo)
;
bus_space_write_1(iot, ioh, com_data, c);
COM_BARRIER(iot, ioh, BR | BW);
/* wait for this transmission to complete */
timo = 15000;
while (!ISSET(bus_space_read_1(iot, ioh, com_lsr), LSR_TXRDY) && --timo)
delay(100);
timo = 1500000;
while (!ISSET(stat = bus_space_read_1(iot, ioh, com_lsr), LSR_TXRDY)
&& --timo)
;
/* clear any interrupts generated by this transmission */
stat = bus_space_read_1(iot, ioh, com_iir);
splx(s);
}