castet.matthieu@xxxxxxx wrote: > > >>Could you please test the current libata-upstream tree and >>turn on ATA_DEBUG and ATA_VERBOSE_DEBUG in include/linux/libata.h. >> > > Is there a easy way to get libata-upstream tree ? > Do I need to install git for that or there are some snapshots somewhere ? > > Hi Matthieu, Tejun has a patch against 2.6.17: http://home-tj.org/files/libata-tj-stable/libata-tj-2.6.17-20060625-1.tar.bz2 > >>If possible, could you also submit the libata log related to the >>early/lost irq. > > Where are this infos ? > Please send the info related to set xfer mode and timeout (any other timeouts seems caused by lost irq are also great.) > IRRC, libata counts lost irq, but display only a message each 1000 losts irq. > Yes, so we need ATA_DEBUG and ATA_VERBOSE_DEBUG being turned on to see the following debug printk of ata_host_intr(). VPRINTK("ata%u: protocol %d task_state %d\n", ap->id, qc->tf.protocol, ap->hsm_task_state); After recompiling the kernel, this will print something like "ata_host_intr: ata3: protocol 6 task_state 5" in the dmesg each time ata_host_intr() is entered. If the irq is ignored due to device busy (early irq), then ata_hsm_move() will be skipped and later we might see ata_scsi_timed_out() triggered. Thanks, Albert --- A sample libata timeout transacation looks like: Jun 27 18:10:55 xlinux19 kernel: ata_scsi_dump_cdb: CDB (3:0,0,0) 1b 00 00 00 02 00 00 00 00 Jun 27 18:10:55 xlinux19 kernel: ata_scsi_translate: ENTER Jun 27 18:10:55 xlinux19 kernel: ata3: ata_dev_select: ENTER, ata3: device 0, wait 1 Jun 27 18:10:55 xlinux19 kernel: ata_tf_load_pio: feat 0x0 nsect 0x0 lba 0x0 0x0 0x20 Jun 27 18:10:55 xlinux19 kernel: ata_tf_load_pio: device 0xA0 Jun 27 18:10:55 xlinux19 kernel: ata_exec_command_pio: ata3: cmd 0xA0 Jun 27 18:10:56 xlinux19 kernel: ata_scsi_translate: EXIT Jun 27 18:10:56 xlinux19 kernel: ata_host_intr: ata3: protocol 6 task_state 5 Jun 27 18:10:56 xlinux19 kernel: ata_hsm_move: ata3: protocol 6 task_state 5 (dev_stat 0x58) Jun 27 18:10:56 xlinux19 kernel: atapi_send_cdb: send cdb (time out here.) Jun 27 18:10:56 xlinux19 kernel: ata_scsi_timed_out: ENTER Jun 27 18:10:56 xlinux19 kernel: ata_scsi_timed_out: EXIT, ret=0 Jun 27 18:10:56 xlinux19 kernel: ata_scsi_error: ENTER Jun 27 18:10:56 xlinux19 kernel: ata_port_flush_task: ENTER Jun 27 18:10:56 xlinux19 kernel: ata_port_flush_task: flush #1 Jun 27 18:10:56 xlinux19 kernel: __ata_port_freeze: ata3 port frozen Jun 27 18:10:56 xlinux19 kernel: ata_eh_autopsy: ENTER Jun 27 18:10:56 xlinux19 kernel: ata_eh_autopsy: EXIT Jun 27 18:10:56 xlinux19 kernel: ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen Jun 27 18:10:56 xlinux19 kernel: ata3.00: tag 0 cmd 0xa0 Emask 0x4 stat 0x40 err 0x0 (timeout) Jun 27 18:10:56 xlinux19 kernel: ata_eh_recover: ENTER - : send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
