diff options
Diffstat (limited to 'sys/cam/cam_periph.c')
| -rw-r--r-- | sys/cam/cam_periph.c | 78 |
1 files changed, 77 insertions, 1 deletions
diff --git a/sys/cam/cam_periph.c b/sys/cam/cam_periph.c index d365a12..f88373b 100644 --- a/sys/cam/cam_periph.c +++ b/sys/cam/cam_periph.c @@ -26,7 +26,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: cam_periph.c,v 1.12 1999/04/19 21:26:07 gibbs Exp $ + * $Id: cam_periph.c,v 1.13 1999/05/09 01:25:04 ken Exp $ */ #include <sys/param.h> @@ -519,6 +519,7 @@ cam_periph_mapmem(union ccb *ccb, struct cam_periph_map_info *mapinfo) } break; case XPT_SCSI_IO: + case XPT_CONT_TARGET_IO: if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE) return(0); @@ -834,6 +835,17 @@ cam_periph_runccb(union ccb *ccb, return(error); } +void +cam_freeze_devq(struct cam_path *path) +{ + struct ccb_hdr ccb_h; + + xpt_setup_ccb(&ccb_h, path, /*priority*/1); + ccb_h.func_code = XPT_NOOP; + ccb_h.flags = CAM_DEV_QFREEZE; + xpt_action((union ccb *)&ccb_h); +} + u_int32_t cam_release_devq(struct cam_path *path, u_int32_t relsim_flags, u_int32_t openings, u_int32_t timeout, @@ -1015,6 +1027,70 @@ camperiphdone(struct cam_periph *periph, union ccb *done_ccb) } /* + * Generic Async Event handler. Peripheral drivers usually + * filter out the events that require personal attention, + * and leave the rest to this function. + */ +void +cam_periph_async(struct cam_periph *periph, u_int32_t code, + struct cam_path *path, void *arg) +{ + switch (code) { + case AC_LOST_DEVICE: + cam_periph_invalidate(periph); + break; + case AC_SENT_BDR: + case AC_BUS_RESET: + { + cam_periph_bus_settle(periph, SCSI_DELAY); + break; + } + default: + break; + } +} + +void +cam_periph_bus_settle(struct cam_periph *periph, u_int bus_settle) +{ + struct ccb_getdevstats cgds; + + xpt_setup_ccb(&cgds.ccb_h, periph->path, /*priority*/1); + cgds.ccb_h.func_code = XPT_GDEV_STATS; + xpt_action((union ccb *)&cgds); + cam_periph_freeze_after_event(periph, &cgds.last_reset, bus_settle); +} + +void +cam_periph_freeze_after_event(struct cam_periph *periph, + struct timeval* event_time, u_int duration_ms) +{ + struct timeval delta; + struct timeval duration_tv; + int s; + + s = splclock(); + microtime(&delta); + splx(s); + timevalsub(&delta, event_time); + duration_tv.tv_sec = duration_ms / 1000; + duration_tv.tv_usec = (duration_ms % 1000) * 1000; + if (timevalcmp(&delta, &duration_tv, <)) { + timevalsub(&duration_tv, &delta); + + duration_ms = duration_tv.tv_sec * 1000; + duration_ms += duration_tv.tv_usec / 1000; + cam_freeze_devq(periph->path); + cam_release_devq(periph->path, + RELSIM_RELEASE_AFTER_TIMEOUT, + /*reduction*/0, + /*timeout*/duration_ms, + /*getcount_only*/0); + } + +} + +/* * Generic error handler. Peripheral drivers usually filter * out the errors that they handle in a unique mannor, then * call this function. |
