> +     cd = pp->cmdentry + tag;
> +
> +     memcpy(fis, &cd->sfis, 6 * 4);  /* should we use memcpy_from_io() */

If cd->sfis points at memory over the PCI bus (eg mmio or memory on the
controller card) then you need to use ioread/_io type functions. If
cd->sfis points into host memory where the FIS is delivered by DMA from
the card you will be fine if it was allocated with an _coherent allocator


Alan
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