MFp4:

Introduce ATA_CAM kernel option, turning ata(4) controller drivers into
cam(4) interface modules. When enabled, this options deprecates all ata(4)
peripheral drivers (ad, acd, ...) and interfaces and allows cam(4) drivers
(ada, cd, ...) and interfaces to be natively used instead.

As side effect of this, ata(4) mode setting code was completely rewritten
to make controller API more strict and permit above change. While doing
this, SATA revision was separated from PATA mode. It allows DMA-incapable
SATA devices to operate and makes hw.ata.atapi_dma tunable work again.

Also allow ata(4) controller drivers (except some specific or broken ones)
to handle larger data transfers. Previous constraint of 64K was artificial
and is not really required by PCI ATA BM specification or hardware.

Submitted by:	nwitehorn (powerpc part)

1 files changed, 4 insertions, 6 deletions

diff --git a/sys/powerpc/psim/ata_iobus.c b/sys/powerpc/psim/ata_iobus.c
index a70d008..149437f 100644
--- a/sys/powerpc/psim/ata_iobus.c
+++ b/sys/powerpc/psim/ata_iobus.c
@@ -210,7 +210,7 @@ ata_iobus_release_resource(device_t dev, device_t child, int type, int rid,
  */
 
 static  int  ata_iobus_sub_probe(device_t dev);
-static  void ata_iobus_sub_setmode(device_t parent, device_t dev);
+static  int  ata_iobus_sub_setmode(device_t dev, int target, int mode);
 
 static device_method_t ata_iobus_sub_methods[] = {
 	/* Device interface */
@@ -245,11 +245,9 @@ ata_iobus_sub_probe(device_t dev)
 	return ata_probe(dev);
 }
 
-static void
-ata_iobus_sub_setmode(device_t parent, device_t dev)
+static int
+ata_iobus_sub_setmode(device_t parent, int target, int mode);
 {
-	struct ata_device *atadev = device_get_softc(dev);
-
 	/* Only ever PIO mode here... */
-	atadev->mode = ATA_PIO;
+	return (ATA_PIO);
 }