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author | trasz <trasz@FreeBSD.org> | 2009-09-04 09:57:03 +0000 |
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committer | trasz <trasz@FreeBSD.org> | 2009-09-04 09:57:03 +0000 |
commit | 5ee8242d815a2c8c7a43062add046ce5cb8d2c26 (patch) | |
tree | 66c28b7ff27c175994100ec2d5c0f2d62e476403 | |
parent | 6552caebd3f50b3ee805fb2fb52d1d6f77476044 (diff) | |
download | FreeBSD-src-5ee8242d815a2c8c7a43062add046ce5cb8d2c26.zip FreeBSD-src-5ee8242d815a2c8c7a43062add046ce5cb8d2c26.tar.gz |
Make umass(4) pass device USB serial number to CAM, making it possible
to e.g. retrieve it using camcontrol(8).
Reviewed by: scottl, hps (earlier version)
Obtained from: Wheel Sp. z o.o. (http://www.wheel.pl)
-rw-r--r-- | sys/dev/usb/storage/umass.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sys/dev/usb/storage/umass.c b/sys/dev/usb/storage/umass.c index f09d1ba..23893e4 100644 --- a/sys/dev/usb/storage/umass.c +++ b/sys/dev/usb/storage/umass.c @@ -124,6 +124,7 @@ __FBSDID("$FreeBSD$"); #include <dev/usb/usb.h> #include <dev/usb/usbdi.h> +#include <dev/usb/usb_device.h> #include "usbdevs.h" #include <cam/cam.h> @@ -2978,6 +2979,28 @@ umass_cam_action(struct cam_sim *sim, union ccb *ccb) if (sc->sc_transfer.cmd_data[0] == INQUIRY) { /* + * Umass devices don't generally report their serial numbers + * in the usual SCSI way. Emulate it here. + */ + if ((sc->sc_transfer.cmd_data[1] & SI_EVPD) && + sc->sc_transfer.cmd_data[2] == SVPD_UNIT_SERIAL_NUMBER && + sc->sc_udev != NULL && + sc->sc_udev->serial != NULL && + sc->sc_udev->serial[0] != '\0') { + struct scsi_vpd_unit_serial_number *vpd_serial; + + vpd_serial = (struct scsi_vpd_unit_serial_number *)ccb->csio.data_ptr; + vpd_serial->length = strlen(sc->sc_udev->serial); + if (vpd_serial->length > sizeof(vpd_serial->serial_num)) + vpd_serial->length = sizeof(vpd_serial->serial_num); + memcpy(vpd_serial->serial_num, sc->sc_udev->serial, vpd_serial->length); + ccb->csio.scsi_status = SCSI_STATUS_OK; + ccb->ccb_h.status = CAM_REQ_CMP; + xpt_done(ccb); + goto done; + } + + /* * Handle EVPD inquiry for broken devices first * NO_INQUIRY also implies NO_INQUIRY_EVPD */ @@ -3193,6 +3216,29 @@ umass_cam_cb(struct umass_softc *sc, union ccb *ccb, uint32_t residue, maxsector = scsi_4btoul(rcap->addr) - 1; scsi_ulto4b(maxsector, rcap->addr); } + /* + * We have to add SVPD_UNIT_SERIAL_NUMBER to the list + * of pages supported by the device - otherwise, CAM + * will never ask us for the serial number if the + * device cannot handle that by itself. + */ + if (ccb->ccb_h.func_code == XPT_SCSI_IO && + sc->sc_transfer.cmd_data[0] == INQUIRY && + (sc->sc_transfer.cmd_data[1] & SI_EVPD) && + sc->sc_transfer.cmd_data[2] == SVPD_SUPPORTED_PAGE_LIST && + sc->sc_udev != NULL && + sc->sc_udev->serial != NULL && + sc->sc_udev->serial[0] != '\0') { + struct ccb_scsiio *csio; + struct scsi_vpd_supported_page_list *page_list; + + csio = &ccb->csio; + page_list = (struct scsi_vpd_supported_page_list *)csio->data_ptr; + if (page_list->length + 1 < SVPD_SUPPORTED_PAGES_SIZE) { + page_list->list[page_list->length] = SVPD_UNIT_SERIAL_NUMBER; + page_list->length++; + } + } xpt_done(ccb); break; |