New pata_sl82c105 is unable to properly handle dma (indeed it try to use mwdma2). Old ide driver instead worked fine.
Tested on IBM 9114-275 where to use it i must boot with dma disabled i.e. with libata.dma=0 [...] pata_sl82c105 0000:00:03.1: enabling device (0144 -> 0145) scsi1 : pata_sl82c105 scsi2 : pata_sl82c105 ata1: PATA max MWDMA2 cmd 0x1f000 ctl 0x1f010 bmdma 0x1f040 irq 165 ata2: PATA max MWDMA2 cmd 0x1f020 ctl 0x1f030 bmdma 0x1f048 irq 165 ata1.00: ATAPI: IBM DROM00205, NR38, max UDMA/33 ata1.00: configured for MWDMA2 [...] scsi 1:0:0:0: CD-ROM IBM DROM00205 NR38 PQ: 0 ANSI: 2 sr0: scsi3-mmc drive: 24x/24x cd/rw xa/form2 cdda tray cdrom: Uniform CD-ROM driver Revision: 3.20 sr 1:0:0:0: Attached scsi generic sg3 type 5 [...] ata1: lost interrupt (Status 0x50) ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen sr 1:0:0:0: CDB: Get configuration: 46 00 00 00 00 00 00 00 20 00 ata1.00: cmd a0/01:00:00:20:00/00:00:00:00:00/a0 tag 0 dma 16416 in res 40/00:02:00:0c:00/00:00:00:00:00/a0 Emask 0x4 (timeout) ata1.00: status: { DRDY } ata1: soft resetting link ata1.00: configured for MWDMA2 ata1: EH complete sr0: CDROM (ioctl) error, command: Get configuration 46 00 00 00 00 00 00 00 20 00 sr: Sense Key : Aborted Command [current] [descriptor] sr: Add. Sense: No additional sense information ata1: lost interrupt (Status 0x50) ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen sr 1:0:0:0: CDB: Xdread, Read track info: 52 01 00 00 00 01 00 00 20 00 ata1.00: cmd a0/01:00:00:20:00/00:00:00:00:00/a0 tag 0 dma 16416 in res 40/00:02:00:08:00/00:00:00:00:00/a0 Emask 0x4 (timeout) ata1.00: status: { DRDY } ata1: soft resetting link ata1.00: configured for MWDMA2 ata1: EH complete sr0: CDROM (ioctl) error, command: Xdread, Read track info 52 01 00 00 00 01 00 000 sr: Sense Key : Aborted Command [current] [descriptor] sr: Add. Sense: No additional sense information ata1: lost interrupt (Status 0x50) ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen sr 1:0:0:0: CDB: Get configuration: 46 00 00 00 00 00 00 00 20 00 ata1.00: cmd a0/01:00:00:20:00/00:00:00:00:00/a0 tag 0 dma 16416 in res 40/00:02:00:0c:00/00:00:00:00:00/a0 Emask 0x4 (timeout) ata1.00: status: { DRDY } ata1: soft resetting link ata1.00: configured for MWDMA2 ata1: EH complete sr0: CDROM (ioctl) error, command: Get configuration 46 00 00 00 00 00 00 00 20 00 sr: Sense Key : Aborted Command [current] [descriptor] sr: Add. Sense: No additional sense information ata1: lost interrupt (Status 0x50) ata1.00: limiting speed to MWDMA1:PIO4 ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen sr 1:0:0:0: CDB: Get configuration: 46 00 00 00 00 00 00 00 20 00 ata1.00: cmd a0/01:00:00:20:00/00:00:00:00:00/a0 tag 0 dma 16416 in res 40/00:02:00:0c:00/00:00:00:00:00/a0 Emask 0x4 (timeout) ata1.00: status: { DRDY } ata1: soft resetting link ata1.00: configured for MWDMA1 ata1: EH complete sr0: CDROM (ioctl) error, command: Get configuration 46 00 00 00 00 00 00 00 20 00 sr: Sense Key : Aborted Command [current] [descriptor] sr: Add. Sense: No additional sense information ata1: lost interrupt (Status 0x50) ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen sr 1:0:0:0: CDB: Get configuration: 46 00 00 00 00 00 00 00 20 00 ata1.00: cmd a0/01:00:00:20:00/00:00:00:00:00/a0 tag 0 dma 16416 in res 40/00:02:00:0c:00/00:00:00:00:00/a0 Emask 0x4 (timeout) ata1.00: status: { DRDY } ata1: soft resetting link ata1.00: configured for MWDMA1 ata1: EH complete sr0: CDROM (ioctl) error, command: Get configuration 46 00 00 00 00 00 00 00 20 00 sr: Sense Key : Aborted Command [current] [descriptor] sr: Add. Sense: No additional sense information ata1: lost interrupt (Status 0x50) ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen sr 1:0:0:0: CDB: Get configuration: 46 00 00 00 00 00 00 00 20 00 ata1.00: cmd a0/01:00:00:20:00/00:00:00:00:00/a0 tag 0 dma 16416 in res 40/00:02:00:0c:00/00:00:00:00:00/a0 Emask 0x4 (timeout) ata1.00: status: { DRDY } ata1: soft resetting link ata1.00: configured for MWDMA1 ata1: EH complete sr0: CDROM (ioctl) error, command: Get configuration 46 00 00 00 00 00 00 00 20 00 sr: Sense Key : Aborted Command [current] [descriptor] sr: Add. Sense: No additional sense information ata1: lost interrupt (Status 0x50) ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen sr 1:0:0:0: CDB: Get configuration: 46 00 00 00 00 00 00 00 20 00 ata1.00: cmd a0/01:00:00:20:00/00:00:00:00:00/a0 tag 0 dma 16416 in res 40/00:02:00:0c:00/00:00:00:00:00/a0 Emask 0x4 (timeout) ata1.00: status: { DRDY } ata1: soft resetting link ata1.00: configured for MWDMA1 ata1: EH complete sr0: CDROM (ioctl) error, command: Get configuration 46 00 00 00 00 00 00 00 20 00 sr: Sense Key : Aborted Command [current] [descriptor] sr: Add. Sense: No additional sense information ata1: lost interrupt (Status 0x50) ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen sr 1:0:0:0: CDB: Get configuration: 46 00 00 00 00 00 00 00 20 00 ata1.00: cmd a0/01:00:00:20:00/00:00:00:00:00/a0 tag 0 dma 16416 in res 40/00:02:00:0c:00/00:00:00:00:00/a0 Emask 0x4 (timeout) ata1.00: status: { DRDY } ata1: soft resetting link ata1.00: configured for MWDMA1 ata1: EH complete cheers, --nico _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev