On Sun, 07 Jan 2007 20:47:35 -0500, Jeff Garzik wrote:
> Mikael Pettersson wrote:
> > @@ -789,8 +789,14 @@ static void pdc_exec_command_mmio(struct
> > static int pdc_check_atapi_dma(struct ata_queued_cmd *qc)
> > {
> > u8 *scsicmd = qc->scsicmd->cmnd;
> > + struct ata_port *ap = qc->ap;
> > + struct pdc_host_priv *hp = ap->host->private_data;
> > int pio = 1; /* atapi dma off by default */
> >
> > + /* First generation chips cannot use ATAPI DMA on SATA ports */
> > + if (!(hp->flags & PDC_FLAG_GEN_II) && sata_scr_valid(ap))
> > + return 1;
> > +
> > /* Whitelist commands that may use DMA. */
> > switch (scsicmd[0]) {
> > case WRITE_12:
>
>
> IMO creating a new check_atapi_dma function for first-gen chips would be
> the preferred way to add this check.
Agreed. Will do.
/Mikael
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