Date: Wed, 18 Sep 1996 11:10:08 -0700 (PDT) From: nsayer@quack.kfu.com To: FreeBSD-gnats-submit@freebsd.org Subject: kern/1636: mss driver extension to broaden support Message-ID: <199609181810.LAA00811@morpheus.kfu.com> Resent-Message-ID: <199609181820.LAA03361@freefall.freebsd.org>
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>Number: 1636
>Category: kern
>Synopsis: mss driver extension to broaden support
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Class: support
>Submitter-Id: current-users
>Arrival-Date: Wed Sep 18 11:20:02 PDT 1996
>Last-Modified:
>Originator: Nick Sayer
>Organization:
Just me
>Release: FreeBSD 2.2-960801-SNAP i386
>Environment:
Some types of laptops (one example is the Zenith Z-NoteFlex),
2.2-980801-SNAP
>Description:
Some incarnations of the Microsoft Windows Sound System don't have
the registers that the mss driver is looking for from base+0 through
base+3. They simply hardwire an AD1848 (or compatable) at base+4.
>How-To-Repeat:
Config mss0 as appropriate for a Z-NoteFlex. probe_ms_sound() will fail
every time.
>Fix:
I have had this fixed for a while, but did not know the scope of the
problem. Solaris 2.x x86 has a flag to tell the driver whether or
not the MWSS "config register" exists, so perhaps this is more
widespread than I thought.
*** ad1848.c.orig Thu Jan 18 12:54:08 1996
--- ad1848.c Tue Sep 17 13:22:33 1996
***************
*** 1391,1396 ****
--- 1391,1397 ----
mad16init (hw_config->io_base);
#endif
+ #ifndef MSS_PLAIN_AD1848
if ((INB (hw_config->io_base + 3) & 0x3f) != 0x04 &&
(INB (hw_config->io_base + 3) & 0x3f) != 0x00)
{
***************
*** 1426,1431 ****
--- 1427,1433 ----
printk ("MSS: Can't use IRQ%d with a 8 bit card/slot\n", hw_config->irq);
return 0;
}
+ #endif /* MSS_PLAIN_AD1848 */
return ad1848_detect (hw_config->io_base + 4);
}
>Audit-Trail:
>Unformatted:
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