On 02/18/2011 08:04 PM, Tejun Heo wrote:
> On Fri, Feb 18, 2011 at 05:10:14PM +0530, Viresh Kumar wrote:
>> > +static struct scsi_host_template arasan_cf_sht = {
>> > + ATA_PIO_SHT(DRIVER_NAME),
>> > +};
> Hmmm... You probably have different requirements for .sg_tablesize and
> .dma_boundary, likely to be more lax.
>
Tejun,
Actually, we really don't have scatter-gather in our controller.
We have to read/write to the same FIFO address for every 512 bytes, after
which we get buf_avail interrupt. And Controller can do a maximum transfer
of 256 KB after which it gives transfer complete interrupt.
So all sg has to be handled in software, framework or driver.
Also, we will always read/write from/to FIFO. And the external DMA controller
doesn't have any limitation of this dma_boudary.
So i feel i should keep
.sg_tablesize = SG_ALL,
.dma_boundary = 0xFFFFFFFF,
Please correct me if i am wrong.
--
viresh
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