Date: Tue, 04 May 1999 14:17:28 -0400 (EDT) From: "Mark J. Taylor" <mtaylor@cybernet.com> To: freebsd-hackers@freebsd.org Subject: sio patch to make 65650 work Message-ID: <XFMail.990504141728.mtaylor@cybernet.com>
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Here's a quick patch to sio.c, relative to 3.1-RELEASE, to make
the 65654 serial chip work. It is a high-speed serial port, and
bit 7 of the MCR is a "divide by 4" indicator. In divide by
four mode, its rates go down from 115200 kbps, like "normal"
serial chips.
This patch basically keeps bit 7 "as-is", and does NOT support
the higer rates. It is only meant as an interim patch to at
least get these boards *working*. I've tested it on an 8-port board
with this chipset on it. It does not break the "regular" serial
chipset support. (I put a serial mouse on a few of the ports, and
it worked under X11.)
Perhaps someone can review this and maybe commit it?
Or is it too much of a "hack"? This is the -hackers list, right. ;)
*** sio.c Mon Jan 25 23:04:01 1999
--- sio.c Tue May 4 12:24:36 1999
***************
*** 743,746 ****
--- 743,747 ----
failures[1] = inb(iobase + com_ier) - IER_ETXRDY;
failures[2] = inb(iobase + com_mcr) - mcr_image;
+ if (failures[2] == 0x80) { mcr_image |= 0x80; failures[2] = 0; }
DELAY(10000); /* Some internal modems need this time */
irqmap[1] = isa_irq_pending();
***************
*** 2327,2331 ****
return (bits);
}
! mcr = 0;
if (bits & TIOCM_DTR)
mcr |= MCR_DTR;
--- 2328,2332 ----
return (bits);
}
! mcr = ((how != DMBIC) && (com->mcr_image & 0x80)) ? 0x80 : 0;
if (bits & TIOCM_DTR)
mcr |= MCR_DTR;
***************
*** 2586,2590 ****
* an interrupt by floating the IRQ line.
*/
! outb(iobase + com_mcr, (sp->mcr & MCR_IENABLE) | MCR_DTR | MCR_RTS);
}
--- 2587,2591 ----
* an interrupt by floating the IRQ line.
*/
! outb(iobase + com_mcr, (sp->mcr & MCR_IENABLE) | MCR_DTR | MCR_RTS | (sp->mcr & 0x80) ? 0x80 : 0);
}
---
Mark J. Taylor Networking Research
Cybernet Systems mtaylor@cybernet.com
727 Airport Blvd. PHONE (734) 668-2567
Ann Arbor, MI 48108 FAX (734) 668-8780
http://www.cybernet.com/ http://www.netmax.com/
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