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| author | Peter Wemm <peter@FreeBSD.org> | 1996-05-05 17:09:04 +0000 |
|---|---|---|
| committer | Peter Wemm <peter@FreeBSD.org> | 1996-05-05 17:09:04 +0000 |
| commit | 34914e50d4db960571da370dbd1f5939537a5dbd (patch) | |
| tree | f86754912d207e6f4d4b0d712b9f735d267673f6 /sys/dev/si/si.c | |
| parent | f519e3067e206d83544d3418d515c7b9db0485d3 (diff) | |
| download | src-34914e50d4db960571da370dbd1f5939537a5dbd.tar.gz src-34914e50d4db960571da370dbd1f5939537a5dbd.zip | |
Change the compiled-in polling parameters to a sysctl setting.
Notes
Notes:
svn path=/head/; revision=15639
Diffstat (limited to 'sys/dev/si/si.c')
| -rw-r--r-- | sys/dev/si/si.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/sys/dev/si/si.c b/sys/dev/si/si.c index faef542ea8ea..e60a0872ed73 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 1.36 1996/01/25 07:21:33 phk Exp $ + * $Id: si.c,v 1.37 1996/03/28 14:28:51 scrappy Exp $ */ #ifndef lint @@ -82,9 +82,10 @@ static char si_copyright1[] = "@(#) (C) Specialix International, 1990,1992", */ #define POLL /* turn on poller to generate buffer empty interrupt */ -#undef FASTPOLL /* turn on 100Hz poller, (XXX: NOTYET!) */ #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 */ +#define RXINT_COUNT 1 /* one rxint per 10 milliseconds */ enum si_mctl { GET, SET, BIS, BIC }; @@ -227,7 +228,10 @@ static int si_default_cflag = TTYDEF_CFLAG; #endif #ifdef POLL -#define POLL_INTERVAL (hz/2) +static int si_pollrate = (hz / 10); /* 10 per second, in addition to irq */ + +SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RD, &si_pollrate, 0, ""); + static int init_finished = 0; static int fastpoll = 0; static void si_poll __P((void *)); @@ -560,9 +564,9 @@ siattach(id) return 0; case 1: /* set throttle to 125 intr per second */ - regp->int_count = 25000; + regp->int_count = INT_COUNT; /* rx intr max of 25 timer per second */ - regp->rx_int_count = 4; + regp->rx_int_count = RXINT_COUNT; regp->int_pending = 0; /* no intr pending */ regp->int_scounter = 0; /* reset counter */ break; @@ -761,7 +765,7 @@ siopen(dev, flag, mode, p) * We've now got a device, so start the poller. */ if (init_finished == 0) { - timeout(si_poll, (caddr_t)0L, POLL_INTERVAL); + timeout(si_poll, (caddr_t)0L, si_pollrate); init_finished = 1; } #endif @@ -1733,7 +1737,7 @@ si_poll(void *nothing) out: splx(oldspl); - timeout(si_poll, (caddr_t)0L, POLL_INTERVAL); + timeout(si_poll, (caddr_t)0L, si_pollrate); } #endif /* ifdef POLL */ |