This is enough to probe and initiate I/O to multiple LUNs on mpii(4) and lets robert@ attach (but not use) his tape library where LUN 0 is an st(4) and LUN 1 is a ch(4). OK?
The reason we limit it to 255 is that LUN numbers larger than 255 need to be encoded in a fairly complicated manner and this can be done later: http://bxr.su/FreeBSD/sys/dev/mps/mps_sas.h#118 P.S. TASK_MGMT command theoretically needs to care about LUNs as well, but not the TARGET_RESET that we're using since it resets all of them (which is actually a wrong thing to do according to the mps(4) driver from LSI in FreeBSD, but it's a different story). diff --git sys/dev/pci/mpii.c sys/dev/pci/mpii.c index 1633c8f5ae4..13a39c654b5 100644 --- sys/dev/pci/mpii.c +++ sys/dev/pci/mpii.c @@ -579,11 +579,11 @@ mpii_attach(struct device *parent, struct device *self, void *aux) /* we should be good to go now, attach scsibus */ sc->sc_link.adapter = &mpii_switch; sc->sc_link.adapter_softc = sc; sc->sc_link.adapter_target = -1; sc->sc_link.adapter_buswidth = sc->sc_max_devices; - sc->sc_link.luns = 1; + sc->sc_link.luns = 255; sc->sc_link.openings = sc->sc_max_cmds - 1; sc->sc_link.pool = &sc->sc_iopool; memset(&saa, 0, sizeof(saa)); saa.saa_sc_link = &sc->sc_link;
