diff options
Diffstat (limited to 'sys/dev/si/si.c')
| -rw-r--r-- | sys/dev/si/si.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/sys/dev/si/si.c b/sys/dev/si/si.c index a92ab4a..bcb301d 100644 --- a/sys/dev/si/si.c +++ b/sys/dev/si/si.c @@ -30,7 +30,7 @@ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN * NO EVENT SHALL THE AUTHORS BE LIABLE. * - * $Id: si.c,v 1.49 1996/07/26 16:55:37 peter Exp $ + * $Id: si.c,v 1.50 1996/08/03 00:21:44 peter Exp $ */ #ifndef lint @@ -82,7 +82,9 @@ static const char si_copyright1[] = "@(#) (C) Specialix International, 1990,199 * and a (programmable - SIHOST2) interrupt at IRQ 11,12 or 15. */ -#define POLL /* turn on poller to generate buffer empty interrupt */ +#define POLL /* turn on poller to scan for lost interrupts */ +#define REALPOLL /* on each poll, scan for work regardless */ +#define POLLHZ (hz/10) /* 10 times per second */ #define SI_DEF_HWFLOW /* turn on default CRTSCTS flow control */ #define SI_I_HIGH_WATER (TTYHOG - 2 * SI_BUFFERSIZE) #define INT_COUNT 25000 /* max of 125 ints per second */ @@ -230,8 +232,10 @@ static int si_default_cflag = TTYDEF_CFLAG; #ifdef POLL static int si_pollrate; /* in addition to irq */ +static int si_realpoll; /* poll HW on timer */ SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, ""); +SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, ""); static int init_finished = 0; static void si_poll __P((void *)); @@ -288,7 +292,10 @@ siprobe(id) si_registerdev(id); - si_pollrate = (hz / 10); /* 10 per second */ + si_pollrate = POLLHZ; /* default 10 per second */ +#ifdef REALPOLL + si_realpoll = 1; /* scan always */ +#endif maddr = id->id_maddr; /* virtual address... */ paddr = (caddr_t)vtophys(id->id_maddr); /* physical address... */ @@ -1737,7 +1744,7 @@ si_poll(void *nothing) } } } - if (lost) + if (lost || si_realpoll) siintr(-1); /* call intr with fake vector */ out: splx(oldspl); |
