Reform the busdma API so that new types may be added without modifying

every architecture's busdma_machdep.c.  It is done by unifying the
bus_dmamap_load_buffer() routines so that they may be called from MI
code.  The MD busdma is then given a chance to do any final processing
in the complete() callback.

The cam changes unify the bus_dmamap_load* handling in cam drivers.

The arm and mips implementations are updated to track virtual
addresses for sync().  Previously this was done in a type specific
way.  Now it is done in a generic way by recording the list of
virtuals in the map.

Submitted by:	jeff (sponsored by EMC/Isilon)
Reviewed by:	kan (previous version), scottl,
	mjacob (isp(4), no objections for target mode changes)
Discussed with:	     ian (arm changes)
Tested by:	marius (sparc64), mips (jmallet), isci(4) on x86 (jharris),
	amd64 (Fabian Keil <freebsd-listen@fabiankeil.de>)

1 files changed, 2 insertions, 12 deletions

diff --git a/sys/dev/mvs/mvs.c b/sys/dev/mvs/mvs.c
index 21c9f97..91ca4f0 100644
--- a/sys/dev/mvs/mvs.c
+++ b/sys/dev/mvs/mvs.c
@@ -1260,19 +1260,9 @@ mvs_begin_transaction(device_t dev, union ccb *ccb)
 		mvs_set_edma_mode(dev, MVS_EDMA_OFF);
 	}
 	if (ch->numpslots == 0 || ch->basic_dma) {
-		void *buf;
-		bus_size_t size;
-
 		slot->state = MVS_SLOT_LOADING;
-		if (ccb->ccb_h.func_code == XPT_ATA_IO) {
-			buf = ccb->ataio.data_ptr;
-			size = ccb->ataio.dxfer_len;
-		} else {
-			buf = ccb->csio.data_ptr;
-			size = ccb->csio.dxfer_len;
-		}
-		bus_dmamap_load(ch->dma.data_tag, slot->dma.data_map,
-		    buf, size, mvs_dmasetprd, slot, 0);
+		bus_dmamap_load_ccb(ch->dma.data_tag, slot->dma.data_map,
+		    ccb, mvs_dmasetprd, slot, 0);
 	} else
 		mvs_legacy_execute_transaction(slot);
 }