Re: Playing with SATA NCQ

Jens Axboe
2005-05-27T06:38:57Z

On Fri, May 27 2005, Jeff Garzik wrote:
> Jens Axboe wrote:
> >@@ -189,7 +194,7 @@
> > .ioctl = ata_scsi_ioctl,
> > .queuecommand = ata_scsi_queuecmd,
> > .eh_strategy_handler = ata_scsi_error,
> >- .can_queue = ATA_DEF_QUEUE,
> >+ .can_queue = ATA_MAX_QUEUE,
> > .this_id = ATA_SHT_THIS_ID,
> > .sg_tablesize = AHCI_MAX_SG,
> > .max_sectors = ATA_MAX_SECTORS,
> >@@ -200,7 +205,7 @@
> > .dma_boundary = AHCI_DMA_BOUNDARY,
> > .slave_configure = ata_scsi_slave_config,
> > .bios_param = ata_std_bios_param,
> >- .ordered_flush = 1,
> >+ .ordered_flush = 0, /* conflicts with NCQ for now */
> > };
> >
> > static struct ata_port_operations ahci_ops = {
>
> Also, you'll probably want to implement ata_scsi_change_queue_depth, and
> reference it in ahci.c (and other NCQ-capable drivers).

Done!

--
Jens Axboe