Date: Sat, 19 Dec 1998 22:29:06 -0600 From: Alan Cox <alc@cs.rice.edu> To: current@FreeBSD.ORG Cc: lcremean@tidalwave.net Subject: Re: cvs commit: src/sys/pci pcisupport.c Message-ID: <19981219222906.A6315@cs.rice.edu>
next in thread | raw e-mail | index | archive | help
> I've been poking around ide_pci.c, and it seems that not having explicit
> Acer Aladdin support in there not only screws with UDMA support, it also
> keeps the second channel from working correctly. This chipset fsr has its
> BMISTA_SIMPLEX flag set, and ide_pci.c is seeing this and assuming (wrongly)
> that the Aladdin IDE controller is single-channel. (Yes, it says it's just
> disabling DMA, but the code actually disables _everything_ on the second
> channel since wd.c uses ide_pci.c to probe for devices. It'd probably be a
> good idea to not check for SIMPLEX anymore.)
Try following patch
Index: /usr/src/sys/i386/isa/wd.c
===================================================================
RCS file: /home/ncvs/src/sys/i386/isa/wd.c,v
retrieving revision 1.181
diff -c -r1.181 wd.c
*** wd.c 1998/12/15 09:16:57 1.181
--- wd.c 1998/12/16 08:01:53
***************
*** 313,320 ****
interface = du->dk_ctrlr / 2;
du->dk_interface = interface;
#if !defined(DISABLE_PCI_IDE) && (NPCI > 0)
! if (wddma[interface].wdd_candma) {
! du->dk_dmacookie = wddma[interface].wdd_candma(dvp->id_iobase, du->dk_ctrlr);
du->dk_port = dvp->id_iobase;
du->dk_altport = wddma[interface].wdd_altiobase(du->dk_dmacookie);
} else {
--- 313,321 ----
interface = du->dk_ctrlr / 2;
du->dk_interface = interface;
#if !defined(DISABLE_PCI_IDE) && (NPCI > 0)
! if ((wddma[interface].wdd_candma != NULL) &&
! ((du->dk_dmacookie = wddma[interface].wdd_candma(dvp->id_iobase,
! du->dk_ctrlr)) != NULL)) {
du->dk_port = dvp->id_iobase;
du->dk_altport = wddma[interface].wdd_altiobase(du->dk_dmacookie);
} else {
DMA will still be limited to devices on wdc0, but at least the devices
attached to wdc1 will be detected (and accessible).
Alan
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?19981219222906.A6315>