From: James Bottomley <James.Bottomley@xxxxxxxxxxxx> Date: Fri, 11 May 2007 13:33:41 -0500 > Right at the moment, we're planning to clean up the way SCSI drivers > process commands. The proposals are essentially: > > 1. Get rid of the now unnecessary map_single path (every command is > either zero transfer or scatter/gather) > 2. use accessors to manipulate the SG lists (mainly so that we can > alter the implementation without affecting the drivers) > > It strikes me that in all of this, we could also consider doing the DMA > mapping inside the mid layer (instead of in every driver). This is > essentially what libata is already doing ... leading to confusion in > SCSI drivers that use libata for SATA. > > So what do people think about this? This would require platforms to handle all of their bus types behind the generic dma_*() and that's isn't true everywhere yet. For example, SBUS still requires explicitly using sbus_map_sg() etc. I plan to fix that of course, but we're not there now. - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
