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Expand the hba_misc fied in the Path Inquiry ccb to allow a controller driver

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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.
This commit is contained in:
Justin T. Gibbs 1998-12-10 04:05:49 +00:00
parent bb4f7bfdbf
commit 9819265820
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=41644
2 changed files with 65 additions and 10 deletions
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5
sys/cam/cam_ccb.h
View File

@ -25,7 +25,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: cam_ccb.h,v 1.1 1998/09/15 06:33:23 gibbs Exp $
* $Id: cam_ccb.h,v 1.2 1998/10/15 23:17:35 gibbs Exp $
*/
#ifndef _CAM_CAM_CCB_H
@ -412,7 +412,8 @@ typedef enum {
typedef enum {
PIM_SCANHILO = 0x80, /* Bus scans from high ID to low ID */
PIM_NOREMOVE = 0x40, /* Removeable devices not included in scan */
PIM_NOINQUIRY = 0x20, /* Inquiry data not kept by XPT */
PIM_NOINITIATOR = 0x20, /* Initiator role not supported. */
PIM_NOBUSRESET = 0x10, /* User has disabled initial BUS RESET */
} pi_miscflag;
/* Path Inquiry CCB */

70
sys/cam/cam_xpt.c
View File

@ -26,7 +26,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: cam_xpt.c,v 1.27 1998/11/25 13:50:10 joerg Exp $
* $Id: cam_xpt.c,v 1.28 1998/12/06 00:06:48 mjacob Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
@ -4552,6 +4552,17 @@ xpt_scan_bus(struct cam_periph *periph, union ccb *request_ccb)
return;
}
if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) {
/*
* Can't scan the bus on an adapter that
* cannot perform the initiator role.
*/
request_ccb->ccb_h.status = CAM_REQ_CMP;
xpt_free_ccb(work_ccb);
xpt_done(request_ccb);
return;
}
/* Save some state for use while we probe for devices */
scan_info = (xpt_scan_bus_info *)
malloc(sizeof(xpt_scan_bus_info), M_TEMP, M_WAITOK);
@ -4739,6 +4750,7 @@ static void
xpt_scan_lun(struct cam_periph *periph, struct cam_path *path,
cam_flags flags, union ccb *request_ccb)
{
struct ccb_pathinq cpi;
cam_status status;
struct cam_path *new_path;
struct cam_periph *old_periph;
@ -4746,6 +4758,30 @@ xpt_scan_lun(struct cam_periph *periph, struct cam_path *path,
CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE,
("xpt_scan_lun\n"));
xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1);
cpi.ccb_h.func_code = XPT_PATH_INQ;
xpt_action((union ccb *)&cpi);
if (cpi.ccb_h.status != CAM_REQ_CMP) {
if (request_ccb != NULL) {
request_ccb->ccb_h.status = cpi.ccb_h.status;
xpt_done(request_ccb);
}
return;
}
if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) {
/*
* Can't scan the bus on an adapter that
* cannot perform the initiator role.
*/
if (request_ccb != NULL) {
request_ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(request_ccb);
}
return;
}
if (request_ccb == NULL) {
request_ccb = malloc(sizeof(union ccb), M_TEMP, M_NOWAIT);
@ -5528,15 +5564,34 @@ xptconfigfunc(struct cam_eb *bus, void *arg)
"status %#x for bus %d\n", status, bus->path_id);
printf("xptconfigfunc: halting bus configuration\n");
xpt_free_ccb(work_ccb);
busses_to_config--;
xpt_finishconfig(xpt_periph, NULL);
return(0);
}
xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
work_ccb->ccb_h.func_code = XPT_RESET_BUS;
work_ccb->ccb_h.cbfcnp = NULL;
CAM_DEBUG(path, CAM_DEBUG_SUBTRACE,
("Resetting Bus\n"));
work_ccb->ccb_h.func_code = XPT_PATH_INQ;
xpt_action(work_ccb);
xpt_finishconfig(xpt_periph, work_ccb);
if (work_ccb->ccb_h.status != CAM_REQ_CMP) {
printf("xptconfigfunc: CPI failed on bus %d "
"with status %d\n", bus->path_id,
work_ccb->ccb_h.status);
xpt_finishconfig(xpt_periph, work_ccb);
return(1);
}
if ((work_ccb->cpi.hba_misc & PIM_NOBUSRESET) == 0) {
xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1);
work_ccb->ccb_h.func_code = XPT_RESET_BUS;
work_ccb->ccb_h.cbfcnp = NULL;
CAM_DEBUG(path, CAM_DEBUG_SUBTRACE,
("Resetting Bus\n"));
xpt_action(work_ccb);
xpt_finishconfig(xpt_periph, work_ccb);
} else {
/* Act as though we performed a successful BUS RESET */
work_ccb->ccb_h.func_code = XPT_RESET_BUS;
xpt_finishconfig(xpt_periph, work_ccb);
}
}
return(1);
@ -5654,11 +5709,10 @@ xpt_finishconfig(struct cam_periph *periph, union ccb *done_ccb)
}
/* FALLTHROUGH */
case XPT_SCAN_BUS:
default:
xpt_free_path(done_ccb->ccb_h.path);
busses_to_config--;
break;
default:
break;
}
}