Bug 24269
| Summary: | Failure to setup DMA on ATA HDs (Alladin V chipset). Was OK a week ago. | ||
|---|---|---|---|
| Product: | Base System | Reporter: | timonin <timonin> |
| Component: | kern | Assignee: | Søren Schmidt <sos> |
| Status: | Closed FIXED | ||
| Severity: | Affects Only Me | ||
| Priority: | Normal | ||
| Version: | Unspecified | ||
| Hardware: | Any | ||
| OS: | Any | ||
It seems timonin@mindspring.com wrote: > > >Number: 24269 > >Category: kern > >Synopsis: Failure to setup DMA on ATA HDs (Alladin V chipset). Was OK a week ago. > >Confidential: no > >Severity: non-critical > >Priority: low > >Responsible: freebsd-bugs > >State: open > >Quarter: > >Keywords: > >Date-Required: > >Class: sw-bug > >Submitter-Id: current-users > >Arrival-Date: Fri Jan 12 01:00:01 PST 2001 > >Closed-Date: > >Last-Modified: > >Originator: Vladimir Timonin > >Release: 4.2 > >Organization: > >Environment: > FreeBSD My.PC 4.2-STABLE FreeBSD 4.2-STABLE #13: Thu Jan 11 22:47:23 PST 2001 root@My.PC:/usr/src/sys/compile/NEWGEN i386 > >Description: > After last upgrade (Jan 10) I lost DMA mode i/O on my hard disk drives. > Alladin V chipset > ata channel 0 - master hd (UDMA2), slave CDROM (PIO4) > channel 1 - master hd (UDMA2), slave CDRW (PIO4) > Looks like that init of the slave (pio) device cause switching off dma for hd drive. > Mount failure appears and after several retries HD I/O fallbacks > to PIO4. > > >How-To-Repeat: > I think, that will be enough to configure one ata channel on Alladin V > board with UDMA master and PIO slave devices. > >Fix: > After I comment one statement in ata-dma.c > (line 316,317) things return back to previous (udma2/pio4, udma2/pio4) > happy times. > I comment (it is not a FIX) > pci_write_config(parent, 0x54, > pci_read_config(parent, 0x54, 4) & ~0x88880000, 4); A fix for this has been committed to -current, it is waiting to be MFC'd -Søren Responsible Changed From-To: freebsd-bugs->sos Over to Mr. ATA (I assume this was MFC'd but will allow the maintainer to close the PR) Responsible Changed From-To: sos->closed State Changed From-To: open->closed Fixed in both -current & -stable. GNAT: Enter the reason for changing this PR's status here. Responsible Changed From-To: closed->sos |
After last upgrade (Jan 10) I lost DMA mode i/O on my hard disk drives. Alladin V chipset ata channel 0 - master hd (UDMA2), slave CDROM (PIO4) channel 1 - master hd (UDMA2), slave CDRW (PIO4) Looks like that init of the slave (pio) device cause switching off dma for hd drive. Mount failure appears and after several retries HD I/O fallbacks to PIO4. Fix: After I comment one statement in ata-dma.c (line 316,317) things return back to previous (udma2/pio4, udma2/pio4) happy times. I comment (it is not a FIX) pci_write_config(parent, 0x54, pci_read_config(parent, 0x54, 4) & ~0x88880000, 4); How-To-Repeat: I think, that will be enough to configure one ata channel on Alladin V board with UDMA master and PIO slave devices.