Expand the hba_misc fied in the Path Inquiry ccb to allow a controller driver
to specify that it does not provide initiator services (PIM_NOINITIATOR) and that the initial bus reset for device probing should be avoided (PIM_NOBUSRESET). Modify the XPT layer to honor these flags.
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9819265820
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=41644
@ -25,7 +25,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: cam_ccb.h,v 1.1 1998/09/15 06:33:23 gibbs Exp $
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* $Id: cam_ccb.h,v 1.2 1998/10/15 23:17:35 gibbs Exp $
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*/
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#ifndef _CAM_CAM_CCB_H
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@ -412,7 +412,8 @@ typedef enum {
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typedef enum {
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PIM_SCANHILO = 0x80, /* Bus scans from high ID to low ID */
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PIM_NOREMOVE = 0x40, /* Removeable devices not included in scan */
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PIM_NOINQUIRY = 0x20, /* Inquiry data not kept by XPT */
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PIM_NOINITIATOR = 0x20, /* Initiator role not supported. */
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PIM_NOBUSRESET = 0x10, /* User has disabled initial BUS RESET */
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} pi_miscflag;
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/* Path Inquiry CCB */
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@ -26,7 +26,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: cam_xpt.c,v 1.27 1998/11/25 13:50:10 joerg Exp $
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* $Id: cam_xpt.c,v 1.28 1998/12/06 00:06:48 mjacob Exp $
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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@ -4552,6 +4552,17 @@ xpt_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
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return;
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}
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if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
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/*
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* Can't scan the bus on an adapter that
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* cannot perform the initiator role.
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*/
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request_ccb->ccb_h.status = CAM_REQ_CMP;
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xpt_free_ccb(work_ccb);
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xpt_done(request_ccb);
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return;
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}
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/* Save some state for use while we probe for devices */
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scan_info = (xpt_scan_bus_info *)
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malloc(sizeof(xpt_scan_bus_info), M_TEMP, M_WAITOK);
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@ -4739,6 +4750,7 @@ static void
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xpt_scan_lun(struct cam_periph *periph, struct cam_path *path,
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cam_flags flags, union ccb *request_ccb)
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{
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struct ccb_pathinq cpi;
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cam_status status;
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struct cam_path *new_path;
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struct cam_periph *old_periph;
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@ -4746,6 +4758,30 @@ xpt_scan_lun(struct cam_periph *periph, struct cam_path *path,
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CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
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("xpt_scan_lun\n"));
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xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
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cpi.ccb_h.func_code = XPT_PATH_INQ;
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xpt_action((union ccb *)&cpi);
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if (cpi.ccb_h.status != CAM_REQ_CMP) {
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if (request_ccb != NULL) {
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request_ccb->ccb_h.status = cpi.ccb_h.status;
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xpt_done(request_ccb);
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}
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return;
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}
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if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
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/*
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* Can't scan the bus on an adapter that
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* cannot perform the initiator role.
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*/
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if (request_ccb != NULL) {
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request_ccb->ccb_h.status = CAM_REQ_CMP;
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xpt_done(request_ccb);
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}
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return;
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}
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if (request_ccb == NULL) {
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request_ccb = malloc(sizeof(union ccb), M_TEMP, M_NOWAIT);
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@ -5528,15 +5564,34 @@ xptconfigfunc(struct cam_eb *bus, void *arg)
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"status %#x for bus %d\n", status, bus->path_id);
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printf("xptconfigfunc: halting bus configuration\n");
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xpt_free_ccb(work_ccb);
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busses_to_config--;
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xpt_finishconfig(xpt_periph, NULL);
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return(0);
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}
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xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
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work_ccb->ccb_h.func_code = XPT_RESET_BUS;
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work_ccb->ccb_h.cbfcnp = NULL;
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CAM_DEBUG(path, CAM_DEBUG_SUBTRACE,
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("Resetting Bus\n"));
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work_ccb->ccb_h.func_code = XPT_PATH_INQ;
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xpt_action(work_ccb);
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xpt_finishconfig(xpt_periph, work_ccb);
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if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
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printf("xptconfigfunc: CPI failed on bus %d "
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"with status %d\n", bus->path_id,
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work_ccb->ccb_h.status);
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xpt_finishconfig(xpt_periph, work_ccb);
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return(1);
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}
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if ((work_ccb->cpi.hba_misc & PIM_NOBUSRESET) == 0) {
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xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
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work_ccb->ccb_h.func_code = XPT_RESET_BUS;
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work_ccb->ccb_h.cbfcnp = NULL;
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CAM_DEBUG(path, CAM_DEBUG_SUBTRACE,
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("Resetting Bus\n"));
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xpt_action(work_ccb);
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xpt_finishconfig(xpt_periph, work_ccb);
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} else {
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/* Act as though we performed a successful BUS RESET */
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work_ccb->ccb_h.func_code = XPT_RESET_BUS;
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xpt_finishconfig(xpt_periph, work_ccb);
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}
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}
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return(1);
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@ -5654,11 +5709,10 @@ xpt_finishconfig(struct cam_periph *periph, union ccb *done_ccb)
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}
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/* FALLTHROUGH */
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case XPT_SCAN_BUS:
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default:
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xpt_free_path(done_ccb->ccb_h.path);
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busses_to_config--;
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break;
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default:
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break;
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}
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}
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