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Tejun Heo wrote: > Rene Herman wrote: >> I just tried the PATA driver for my AMD756 chip. During boot, it hangs >> for 3 minutes failing to identify my DVD-ROM (secondary slave) and does >> not give me access to it after it timed out. > > Please give a shot at v2.6.20-rc2 and report what the kernel says. This IDENTIFY issue seems already fixed in -rc2. No more pause, and my DVD-ROM works fine again. Unfortunately, another issue seems to have cropped up. On 2.6.20-rc2, hdparm -t /dev/sda gets me ~ 24 M/s while both the old IDE driver and the 2.6.19 PATA driver do ~ 50 M/s 2.6.20-rc2-ata: # hdparm -t /dev/sda /dev/sda: Timing buffered disk reads: 72 MB in 3.03 seconds = 23.75 MB/sec 2.6.19-ata: # hdparm -t /dev/sda /dev/sda: Timing buffered disk reads: 150 MB in 3.00 seconds = 49.94 MB/sec Here's the ata part of the 2.6.20-rc2 dmesg: === ata1: PATA max UDMA/66 cmd 0x1F0 ctl 0x3F6 bmdma 0xF000 irq 14 ata2: PATA max UDMA/66 cmd 0x170 ctl 0x376 bmdma 0xF008 irq 15 scsi0 : pata_amd ata1.00: ATA-7, max UDMA/133, 240121728 sectors: LBA ata1.00: ata1: dev 0 multi count 16 ata1.00: configured for UDMA/66 scsi1 : pata_amd ata2.00: ATAPI, max UDMA/33 ata2.01: ATAPI, max UDMA/66 ata2.00: configured for UDMA/33 ata2.01: configured for UDMA/66 scsi 0:0:0:0: Direct-Access ATA Maxtor 6Y120P0 YAR4 PQ: 0 ANSI: 5 SCSI device sda: 240121728 512-byte hdwr sectors (122942 MB) sda: Write Protect is off sda: Mode Sense: 00 3a 00 00 SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA SCSI device sda: 240121728 512-byte hdwr sectors (122942 MB) sda: Write Protect is off sda: Mode Sense: 00 3a 00 00 SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA sda: sda1 < sda5 sda6 sda7 sda8 > sda2 sda3 sda4 sda2: <minix: sda9 sda10 > sd 0:0:0:0: Attached scsi disk sda sd 0:0:0:0: Attached scsi generic sg0 type 0 scsi 1:0:0:0: CD-ROM PLEXTOR CD-R PREMIUM 1.07 PQ: 0 ANSI: 5 sr0: scsi3-mmc drive: 40x/40x writer cd/rw xa/form2 cdda tray Uniform CD-ROM driver Revision: 3.20 sr 1:0:0:0: Attached scsi CD-ROM sr0 sr 1:0:0:0: Attached scsi generic sg1 type 5 scsi 1:0:1:0: CD-ROM PLEXTOR DVD-ROM PX-116A 1.00 PQ: 0 ANSI: 5 sr1: scsi3-mmc drive: 48x/48x cd/rw xa/form2 cdda tray sr 1:0:1:0: Attached scsi CD-ROM sr1 sr 1:0:1:0: Attached scsi generic sg2 type 5 === There's some difference with respect to caching versus 2.6.19 it seems? The same bit for 2.6.19: === pata_amd 0000:00:07.1: version 0.2.4 ata1: PATA max UDMA/66 cmd 0x1F0 ctl 0x3F6 bmdma 0xF000 irq 14 ata2: PATA max UDMA/66 cmd 0x170 ctl 0x376 bmdma 0xF008 irq 15 scsi0 : pata_amd ata1.00: ATA-7, max UDMA/133, 240121728 sectors: LBA ata1.00: ata1: dev 0 multi count 16 ata1.00: configured for UDMA/66 scsi1 : pata_amd ata2.00: ATAPI, max UDMA/33 ata2.01: qc timeout (cmd 0xa1) ata2.01: failed to IDENTIFY (I/O error, err_mask=0x4) ata2: failed to recover some devices, retrying in 5 secs ata2: port is slow to respond, please be patient (Status 0xd8) ata2: port failed to respond (30 secs, Status 0xd8) ata2.01: qc timeout (cmd 0xa1) ata2.01: failed to IDENTIFY (I/O error, err_mask=0x4) ata2: failed to recover some devices, retrying in 5 secs ata2: port is slow to respond, please be patient (Status 0xd8) ata2: port failed to respond (30 secs, Status 0xd8) ata2.01: qc timeout (cmd 0xa1) ata2.01: failed to IDENTIFY (I/O error, err_mask=0x4) ata2: failed to recover some devices, retrying in 5 secs ata2: port is slow to respond, please be patient (Status 0xd8) ata2: port failed to respond (30 secs, Status 0xd8) ata2.00: configured for UDMA/33 scsi 0:0:0:0: Direct-Access ATA Maxtor 6Y120P0 YAR4 PQ: 0 ANSI: 5 SCSI device sda: 240121728 512-byte hdwr sectors (122942 MB) sda: Write Protect is off sda: Mode Sense: 00 3a 00 00 SCSI device sda: drive cache: write back SCSI device sda: 240121728 512-byte hdwr sectors (122942 MB) sda: Write Protect is off sda: Mode Sense: 00 3a 00 00 SCSI device sda: drive cache: write back sda: sda1 < sda5 sda6 sda7 sda8 > sda2 sda3 sda4 sda2: <minix: sda9 sda10 > sd 0:0:0:0: Attached scsi disk sda sd 0:0:0:0: Attached scsi generic sg0 type 0 scsi 1:0:0:0: CD-ROM PLEXTOR CD-R PREMIUM 1.07 PQ: 0 ANSI: 5 sr0: scsi3-mmc drive: 40x/40x writer cd/rw xa/form2 cdda tray Uniform CD-ROM driver Revision: 3.20 sr 1:0:0:0: Attached scsi CD-ROM sr0 sr 1:0:0:0: Attached scsi generic sg1 type 5 === Rene. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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