Date: Wed, 29 Mar 2000 10:53:52 +0100 (BST) From: Nick Hibma <n_hibma@calcaphon.com> To: FreeBSD SCSI Mailing List <scsi@freebsd.org> Subject: Re: Bus rescan (second try) Message-ID: <Pine.BSF.4.20.0003291049080.1750-100000@localhost> In-Reply-To: <Pine.BSF.4.20.0003281838430.1890-100000@localhost>
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Ken, Justin,
Sorry for the rerun. After checking the archives again, I don't expect
anyone to have a better answer this time round, so I'll just propose a
patch. It makes xpt_periph a kernel global variable.
Let me know whether this is acceptable, and if not, how else to get a
pointer to the peripheral for the bus to be scanned. xpt_done (and
subroutines after that, require periph to be set in the path).
Nick
Index: cam_periph.h
===================================================================
RCS file: /home/ncvs/src/sys/cam/cam_periph.h,v
retrieving revision 1.7
diff -u -r1.7 cam_periph.h
--- cam_periph.h 2000/03/15 21:55:46 1.7
+++ cam_periph.h 2000/03/29 09:48:11
@@ -35,6 +35,8 @@
#ifdef _KERNEL
+struct cam_periph *xpt_periph;
+
extern struct linker_set periphdriver_set;
typedef void (periph_init_t)(void); /*
Index: cam_xpt.c
===================================================================
RCS file: /home/ncvs/src/sys/cam/cam_xpt.c,v
retrieving revision 1.81
diff -u -r1.81 cam_xpt.c
--- cam_xpt.c 2000/03/15 21:55:46 1.81
+++ cam_xpt.c 2000/03/29 09:46:22
@@ -528,7 +528,7 @@
*/
static u_int xpt_ccb_count; /* Current count of allocated ccbs */
-static struct cam_periph *xpt_periph;
+struct cam_periph *xpt_periph;
static periph_init_t xpt_periph_init;
On Tue, 28 Mar 2000, Nick Hibma wrote:
>
> The fragment below is intended to rescan the bus on connection of a
> device. The problem is that cam_periph_find always returns NULL, because
> a SIM does not seem to have a periph.
>
> An option would be to make xpt_periph available in cam_periph.h. Or
> someone telling me how to do the rescan on connection of a drive.
>
> I think I've tried everything imaginable.
>
> Nick
>
>
> /* Create a path and lookup the peripheral for the SIM */
> if (xpt_create_path(&path, NULL, cam_sim_path(umass_sim),
> UMASS_SCSIID_HOST, 0)
> != CAM_REQ_CMP)
> return;
> periph = cam_periph_find(path, DEVNAME);
> if (periph == NULL) {
> DPRINTF(UDMASS_SCSI, ("%s:%d:%d:%d: no periph\n",
> USBDEVNAME(sc->sc_dev), cam_sim_path(umass_sim),
> device_get_unit(sc->sc_dev), 0));
> xpt_free_path(path);
> return;
> }
> xpt_free_path(path);
>
> /* Lookup the path again, but now include the periph in the path*/
> if (xpt_create_path(&path, periph, cam_sim_path(umass_sim),
> UMASS_SCSIID_HOST, 0)
> != CAM_REQ_CMP)
> return;
>
> xpt_setup_ccb(&ccb->ccb_h, path, 5/*priority (low)*/);
> ccb->ccb_h.func_code = XPT_SCAN_BUS;
> ccb->ccb_h.cbfcnp = umass_cam_rescan_callback;
> ccb->crcn.flags = CAM_FLAG_NONE;
> xpt_action(ccb);
>
>
> --
> n_hibma@webweaving.org
> n_hibma@freebsd.org USB project
> http://www.etla.net/~n_hibma/
>
>
>
>
>
>
>
> To Unsubscribe: send mail to majordomo@FreeBSD.org
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>
--
n_hibma@webweaving.org
n_hibma@freebsd.org USB project
http://www.etla.net/~n_hibma/
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