1 files changed, 48 insertions, 0 deletions

diff --git a/sys/dev/aac/aac_cam.c b/sys/dev/aac/aac_cam.c
index 2e5a659..44f4e19 100644
--- a/sys/dev/aac/aac_cam.c
+++ b/sys/dev/aac/aac_cam.c
@@ -37,12 +37,15 @@ __FBSDID("$FreeBSD$");
 #include <sys/systm.h>
 #include <sys/kernel.h>
 #include <sys/sysctl.h>
+#include <sys/lock.h>
 #include <sys/malloc.h>
 #include <sys/module.h>
+#include <sys/mutex.h>
 
 #include <cam/cam.h>
 #include <cam/cam_ccb.h>
 #include <cam/cam_debug.h>
+#include <cam/cam_periph.h>
 #include <cam/cam_sim.h>
 #include <cam/cam_xpt_sim.h>
 #include <cam/scsi/scsi_all.h>
@@ -76,6 +79,9 @@ static int aac_cam_detach(device_t dev);
 static void aac_cam_action(struct cam_sim *, union ccb *);
 static void aac_cam_poll(struct cam_sim *);
 static void aac_cam_complete(struct aac_command *);
+static void aac_cam_rescan(struct aac_softc *sc, uint32_t channel,
+    uint32_t target_id);
+
 static u_int32_t aac_cam_reset_bus(struct cam_sim *, union ccb *);
 static u_int32_t aac_cam_abort_ccb(struct cam_sim *, union ccb *);
 static u_int32_t aac_cam_term_io(struct cam_sim *, union ccb *);
@@ -101,6 +107,43 @@ MODULE_DEPEND(aacp, cam, 1, 1, 1);
 MALLOC_DEFINE(M_AACCAM, "aaccam", "AAC CAM info");
 
 static void
+aac_cam_rescan(struct aac_softc *sc, uint32_t channel, uint32_t target_id)
+{
+	union ccb *ccb;
+	struct aac_sim *sim;
+	struct aac_cam *camsc;
+
+	if (target_id == AAC_CAM_TARGET_WILDCARD)
+		target_id = CAM_TARGET_WILDCARD;
+
+	TAILQ_FOREACH(sim, &sc->aac_sim_tqh, sim_link) {
+		camsc = sim->aac_cam;
+		if (camsc == NULL || camsc->inf == NULL ||
+		    camsc->inf->BusNumber != channel)
+			continue;
+
+		ccb = xpt_alloc_ccb_nowait();
+		if (ccb == NULL) {
+			device_printf(sc->aac_dev,
+			    "Cannot allocate ccb for bus rescan.\n");
+			return;
+		}
+
+		if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
+		    cam_sim_path(camsc->sim),
+		    target_id, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
+			xpt_free_ccb(ccb);
+			device_printf(sc->aac_dev,
+			    "Cannot create path for bus rescan.\n");
+			return;
+		}
+		xpt_rescan(ccb);
+		break;
+	}
+}
+
+
+static void
 aac_cam_event(struct aac_softc *sc, struct aac_event *event, void *arg)
 {
 	union ccb *ccb;
@@ -141,6 +184,7 @@ aac_cam_detach(device_t dev)
 
 	camsc = (struct aac_cam *)device_get_softc(dev);
 	sc = camsc->inf->aac_sc;
+	camsc->inf->aac_cam = NULL;
 
 	mtx_lock(&sc->aac_io_lock);
 
@@ -149,6 +193,8 @@ aac_cam_detach(device_t dev)
 	xpt_bus_deregister(cam_sim_path(camsc->sim));
 	cam_sim_free(camsc->sim, /*free_devq*/TRUE);
 
+	sc->cam_rescan_cb = NULL;
+
 	mtx_unlock(&sc->aac_io_lock);
 
 	return (0);
@@ -171,6 +217,7 @@ aac_cam_attach(device_t dev)
 	camsc = (struct aac_cam *)device_get_softc(dev);
 	inf = (struct aac_sim *)device_get_ivars(dev);
 	camsc->inf = inf;
+	camsc->inf->aac_cam = camsc;
 
 	devq = cam_simq_alloc(inf->TargetsPerBus);
 	if (devq == NULL)
@@ -198,6 +245,7 @@ aac_cam_attach(device_t dev)
 		mtx_unlock(&inf->aac_sc->aac_io_lock);
 		return (EIO);
 	}
+	inf->aac_sc->cam_rescan_cb = aac_cam_rescan;
 	mtx_unlock(&inf->aac_sc->aac_io_lock);
 
 	camsc->sim = sim;