Update the CAM API for FreeBSD 10:

- Remove the timeout_ch field.  It's been deprecated since FreeBSD 7.0;
  MPSAFE drivers should be managing their own timeout storage.  The
  remaining non-MPSAFE drivers have been modified to also manage their own
  storage, and should be considered for updating to MPSAFE (or removal)
  during the FreeBSD 10.x lifecycle.

- Add fields related to soft timeouts and quality of service, to be used
  in upcoming work.

- Add room for more flags in the CCB header and path_inq structures.

- Begin support for extended 64-bit LUNs.

- Bump the CAM version number to 0x18, but add compat shims.  Tested with
  camcontrol and smartctl.

Reviewed by:    nathanw, ken, kib
Approved by:    re
Obtained from:  Netflix

2 files changed, 6 insertions, 5 deletions

diff --git a/sys/dev/tws/tws.c b/sys/dev/tws/tws.c
index 409631f..6ebde75 100644
--- a/sys/dev/tws/tws.c
+++ b/sys/dev/tws/tws.c
@@ -696,6 +696,7 @@ tws_init_reqs(struct tws_softc *sc, u_int32_t dma_mem_size)
 
         sc->reqs[i].cmd_pkt->hdr.header_desc.size_header = 128;
 
+	callout_handle_init(&sc->reqs[i].thandle);
         sc->reqs[i].state = TWS_REQ_STATE_FREE;
         if ( i >= TWS_RESERVED_REQS )
             tws_q_insert_tail(sc, &sc->reqs[i], TWS_FREE_Q);
diff --git a/sys/dev/tws/tws_cam.c b/sys/dev/tws/tws_cam.c
index 46b91f4..b134d76 100644
--- a/sys/dev/tws/tws_cam.c
+++ b/sys/dev/tws/tws_cam.c
@@ -341,7 +341,7 @@ tws_scsi_complete(struct tws_request *req)
     tws_q_remove_request(sc, req, TWS_BUSY_Q);
     mtx_unlock(&sc->q_lock);
 
-    untimeout(tws_timeout, req, req->ccb_ptr->ccb_h.timeout_ch);
+    untimeout(tws_timeout, req, req->thandle);
     tws_unmap_request(req->sc, req);
 
 
@@ -454,7 +454,7 @@ tws_cmd_complete(struct tws_request *req)
 {
     struct tws_softc *sc = req->sc;
 
-    untimeout(tws_timeout, req, req->ccb_ptr->ccb_h.timeout_ch);
+    untimeout(tws_timeout, req, req->thandle);
     tws_unmap_request(sc, req);
 }
                                    
@@ -561,7 +561,7 @@ tws_scsi_err_complete(struct tws_request *req, struct tws_command_header *hdr)
     xpt_done(ccb);
     mtx_unlock(&sc->sim_lock);
 
-    untimeout(tws_timeout, req, req->ccb_ptr->ccb_h.timeout_ch);
+    untimeout(tws_timeout, req, req->thandle);
     tws_unmap_request(req->sc, req);
     mtx_lock(&sc->q_lock);
     tws_q_remove_request(sc, req, TWS_BUSY_Q);
@@ -591,7 +591,7 @@ tws_drain_busy_queue(struct tws_softc *sc)
     mtx_unlock(&sc->q_lock);
     while ( req ) {
         TWS_TRACE_DEBUG(sc, "moved to TWS_COMPLETE_Q", 0, req->request_id);
-        untimeout(tws_timeout, req, req->ccb_ptr->ccb_h.timeout_ch);
+        untimeout(tws_timeout, req, req->thandle);
 
         req->error_code = TWS_REQ_RET_RESET;
         ccb = (union ccb *)(req->ccb_ptr);
@@ -747,7 +747,7 @@ tws_execute_scsi(struct tws_softc *sc, union ccb *ccb)
      * and submit the I/O.
      */
     sc->stats.scsi_ios++;
-    ccb_h->timeout_ch = timeout(tws_timeout, req, (ccb_h->timeout * hz)/1000);
+    req->thandle = timeout(tws_timeout, req, (ccb_h->timeout * hz)/1000);
     error = tws_map_request(sc, req);
     return(error);
 }