MFp4:

- Move tagged queueing control from ADA to ATA XPT. It allows to control
  device command queue length correctly. First step to support < 32 tags.
- Limit queue for non-tagged devices by 2 slots for ahci(4) and siis(4).
- Implement quirk matching for ATA devices.
- Move xpt_schedule_dev_sendq() from header to source file.
- Move delayed queue shrinking to the more expected place - element freeing.
- Remove some SCSIsms in ATA.

1 files changed, 2 insertions, 1 deletions

diff --git a/sys/dev/ahci/ahci.c b/sys/dev/ahci/ahci.c
index 92a6519..c46d0ce 100644
--- a/sys/dev/ahci/ahci.c
+++ b/sys/dev/ahci/ahci.c
@@ -733,7 +733,8 @@ ahci_ch_attach(device_t dev)
 	}
 	/* Construct SIM entry */
 	ch->sim = cam_sim_alloc(ahciaction, ahcipoll, "ahcich", ch,
-	    device_get_unit(dev), &ch->mtx, ch->numslots, 0, devq);
+	    device_get_unit(dev), &ch->mtx,
+	    min(2, ch->numslots), ch->numslots, devq);
 	if (ch->sim == NULL) {
 		device_printf(dev, "unable to allocate sim\n");
 		error = ENOMEM;