svn commit: r295286 - head/sys/dev/mps

[Scott Long]

Author: scottl
Date: Thu Feb  4 23:38:55 2016
New Revision: 295286
URL: https://svnweb.freebsd.org/changeset/base/295286

Log:
  Add sysctls for dumping out the device mapping tables.  I'm finding this
  useful for debugging device-target translation bugs.
  
  MFC after:	3 days
  Sponsored by:	Netflix

Modified:
  head/sys/dev/mps/mps.c
  head/sys/dev/mps/mps_mapping.c
  head/sys/dev/mps/mpsvar.h

Modified: head/sys/dev/mps/mps.c
==============================================================================
--- head/sys/dev/mps/mps.c	Thu Feb  4 22:53:12 2016	(r295285)
+++ head/sys/dev/mps/mps.c	Thu Feb  4 23:38:55 2016	(r295286)
@@ -1476,6 +1476,14 @@ mps_setup_sysctl(struct mps_softc *sc)
 	    OID_AUTO, "spinup_wait_time", CTLFLAG_RD,
 	    &sc->spinup_wait_time, DEFAULT_SPINUP_WAIT, "seconds to wait for "
 	    "spinup after SATA ID error");
+
+	SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
+	    OID_AUTO, "mapping_table_dump", CTLTYPE_STRING | CTLFLAG_RD, sc, 0,
+	    mps_mapping_dump, "A", "Mapping Table Dump");
+
+	SYSCTL_ADD_PROC(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree),
+	    OID_AUTO, "encl_table_dump", CTLTYPE_STRING | CTLFLAG_RD, sc, 0,
+	    mps_mapping_encl_dump, "A", "Enclosure Table Dump");
 }
 
 int

Modified: head/sys/dev/mps/mps_mapping.c
==============================================================================
--- head/sys/dev/mps/mps_mapping.c	Thu Feb  4 22:53:12 2016	(r295285)
+++ head/sys/dev/mps/mps_mapping.c	Thu Feb  4 23:38:55 2016	(r295286)
@@ -43,6 +43,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/bus.h>
 #include <sys/endian.h>
 #include <sys/sysctl.h>
+#include <sys/sbuf.h>
 #include <sys/eventhandler.h>
 #include <sys/uio.h>
 #include <machine/bus.h>
@@ -2263,3 +2264,61 @@ out:
 	if (sc->pending_map_events)
 		sc->pending_map_events--;
 }
+
+int
+mps_mapping_dump(SYSCTL_HANDLER_ARGS)
+{
+	struct mps_softc *sc;
+	struct dev_mapping_table *mt_entry;
+	struct sbuf sbuf;
+	int i, error;
+
+	sc = (struct mps_softc *)arg1;
+
+	error = sysctl_wire_old_buffer(req, 0);
+	if (error != 0)
+		return (error);
+	sbuf_new_for_sysctl(&sbuf, NULL, 128, req);
+
+	sbuf_printf(&sbuf, "\nindex physical_id       handle id\n");
+	for (i = 0; i < sc->max_devices; i++) {
+		mt_entry = &sc->mapping_table[i];
+		if (mt_entry->physical_id == 0)
+			continue;
+		sbuf_printf(&sbuf, "%4d  %jx  %04x   %hd\n",
+		    i, mt_entry->physical_id, mt_entry->dev_handle,
+		    mt_entry->id);
+	}
+	error = sbuf_finish(&sbuf);
+	sbuf_delete(&sbuf);
+	return (error);
+}
+
+int
+mps_mapping_encl_dump(SYSCTL_HANDLER_ARGS)
+{
+	struct mps_softc *sc;
+	struct enc_mapping_table *enc_entry;
+	struct sbuf sbuf;
+	int i, error;
+
+	sc = (struct mps_softc *)arg1;
+
+	error = sysctl_wire_old_buffer(req, 0);
+	if (error != 0)
+		return (error);
+	sbuf_new_for_sysctl(&sbuf, NULL, 128, req);
+
+	sbuf_printf(&sbuf, "\nindex enclosure_id      handle map_index\n");
+	for (i = 0; i < sc->max_enclosures; i++) {
+		enc_entry = &sc->enclosure_table[i];
+		if (enc_entry->enclosure_id == 0)
+			continue;
+		sbuf_printf(&sbuf, "%4d  %jx  %04x   %d\n",
+		    i, enc_entry->enclosure_id, enc_entry->enc_handle,
+		    enc_entry->start_index);
+	}
+	error = sbuf_finish(&sbuf);
+	sbuf_delete(&sbuf);
+	return (error);
+}

Modified: head/sys/dev/mps/mpsvar.h
==============================================================================
--- head/sys/dev/mps/mpsvar.h	Thu Feb  4 22:53:12 2016	(r295285)
+++ head/sys/dev/mps/mpsvar.h	Thu Feb  4 23:38:55 2016	(r295286)
@@ -756,6 +756,8 @@ void mps_mapping_enclosure_dev_status_ch
     Mpi2EventDataSasEnclDevStatusChange_t *event_data);
 void mps_mapping_ir_config_change_event(struct mps_softc *sc,
     Mpi2EventDataIrConfigChangeList_t *event_data);
+int mps_mapping_dump(SYSCTL_HANDLER_ARGS);
+int mps_mapping_encl_dump(SYSCTL_HANDLER_ARGS);
 
 void mpssas_evt_handler(struct mps_softc *sc, uintptr_t data,
     MPI2_EVENT_NOTIFICATION_REPLY *event);