On 11/21/18 1:41 AM, Christoph Hellwig wrote:
> Hi all,
>
> you in the To list maintain or wrote SCSI drivers that set the
> DISABLE_CLUSTERING flag, which basically disable merges of any
> bio segments. We already have the actual max_segment size limit
> to say which length a segment should have
On Mon, 3 Dec 2018, Hannes Reinecke wrote:
> As I said: I need to do PIO for the last two bytes of the data buffer.
> For everything else DMA works nicely, it's just the last two bytes which
> might be left over in the FIFO buffer under certain circumstances.
I read the driver a few times alrea
On 12/2/18 11:13 PM, Finn Thain wrote:
On Sun, 2 Dec 2018, Hannes Reinecke wrote:
On 12/2/18 10:21 PM, Finn Thain wrote:
On Sun, 2 Dec 2018, Hannes Reinecke wrote:
Well, that lone 'kmap' is due to a quirk/errata in the datasheet;
essentially
we have to PIO a lone byte out of the FIFO to clea
On Sun, 2 Dec 2018, Hannes Reinecke wrote:
> On 12/2/18 10:21 PM, Finn Thain wrote:
> > On Sun, 2 Dec 2018, Hannes Reinecke wrote:
> >
> > > Well, that lone 'kmap' is due to a quirk/errata in the datasheet;
> > > essentially
> > > we have to PIO a lone byte out of the FIFO to clear it up.
> > > A
On 12/2/18 10:21 PM, Finn Thain wrote:
On Sun, 2 Dec 2018, Hannes Reinecke wrote:
Well, that lone 'kmap' is due to a quirk/errata in the datasheet; essentially
we have to PIO a lone byte out of the FIFO to clear it up.
And this byte is technically still part of the SCSI data, so we need to
stuf
On Sun, 2 Dec 2018, Hannes Reinecke wrote:
> Well, that lone 'kmap' is due to a quirk/errata in the datasheet; essentially
> we have to PIO a lone byte out of the FIFO to clear it up.
> And this byte is technically still part of the SCSI data, so we need to
> stuff it onto the end of the actual da
On 11/26/18 10:46 AM, Finn Thain wrote:
On Mon, 26 Nov 2018, Christoph Hellwig wrote:
On Thu, Nov 22, 2018 at 09:02:13AM +1100, Finn Thain wrote:
you in the To list maintain or wrote SCSI drivers that set the
DISABLE_CLUSTERING flag, which basically disable merges of any
bio segments. We alre
On Mon, Nov 26, 2018 at 08:46:39PM +1100, Finn Thain wrote:
> On Mon, 26 Nov 2018, Christoph Hellwig wrote:
>
> > On Thu, Nov 22, 2018 at 09:02:13AM +1100, Finn Thain wrote:
> > > > you in the To list maintain or wrote SCSI drivers that set the
> > > > DISABLE_CLUSTERING flag, which basically disa
On Mon, 26 Nov 2018, Christoph Hellwig wrote:
> On Thu, Nov 22, 2018 at 09:02:13AM +1100, Finn Thain wrote:
> > > you in the To list maintain or wrote SCSI drivers that set the
> > > DISABLE_CLUSTERING flag, which basically disable merges of any
> > > bio segments. We already have the actual max_
Am 26.11.2018 um 20:50 schrieb Christoph Hellwig:
On Thu, Nov 22, 2018 at 10:11:33AM +1300, Michael Schmitz wrote:
Christoph,
for Atari SCSI, commands can only be merged if the physical addresses
of all buffers are contiguous (limitation of the Falcon DMA engine).
Documentation/scsi/scsi_mid_
On Thu, Nov 22, 2018 at 10:11:33AM +1300, Michael Schmitz wrote:
> Christoph,
> for Atari SCSI, commands can only be merged if the physical addresses
> of all buffers are contiguous (limitation of the Falcon DMA engine).
> Documentation/scsi/scsi_mid_low_api.tx does not spell out whether that
> is
On Thu, Nov 22, 2018 at 09:02:13AM +1100, Finn Thain wrote:
> > you in the To list maintain or wrote SCSI drivers that set the
> > DISABLE_CLUSTERING flag, which basically disable merges of any
> > bio segments. We already have the actual max_segment size limit
> > to say which length a segment sh
On Fri, Nov 23, 2018 at 09:09:49AM +0100, Juergen Gross wrote:
> On 21/11/2018 10:41, Christoph Hellwig wrote:
> > Hi all,
> >
> > you in the To list maintain or wrote SCSI drivers that set the
> > DISABLE_CLUSTERING flag, which basically disable merges of any
> > bio segments. We already have th
On 21/11/2018 10:41, Christoph Hellwig wrote:
> Hi all,
>
> you in the To list maintain or wrote SCSI drivers that set the
> DISABLE_CLUSTERING flag, which basically disable merges of any
> bio segments. We already have the actual max_segment size limit
> to say which length a segment should have
On Wed, 21 Nov 2018, Christoph Hellwig wrote:
> Hi all,
>
> you in the To list maintain or wrote SCSI drivers that set the
> DISABLE_CLUSTERING flag, which basically disable merges of any
> bio segments. We already have the actual max_segment size limit
> to say which length a segment should h
Christoph,
for Atari SCSI, commands can only be merged if the physical addresses
of all buffers are contiguous (limitation of the Falcon DMA engine).
Documentation/scsi/scsi_mid_low_api.tx does not spell out whether that
is the case.
Atari SCSI disables scatter/gather, so if that's sufficient to c
16 matches
Mail list logo
