dr_util.c revision 9853d9e82e7a067a2b88dae2fd257207e6be5f94
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * CDDL HEADER START
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
3e14f97f673e8a630f076077de35afdd43dc1587Roger A. Faulkner * The contents of this file are subject to the terms of the
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Common Development and Distribution License (the "License").
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * You may not use this file except in compliance with the License.
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * or http://www.opensolaris.org/os/licensing.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * See the License for the specific language governing permissions
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * and limitations under the License.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * When distributing Covered Code, include this CDDL HEADER in each
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * If applicable, add the following below this CDDL HEADER, with the
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * fields enclosed by brackets "[]" replaced with your own identifying
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * information: Portions Copyright [yyyy] [name of copyright owner]
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * CDDL HEADER END
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Use is subject to license terms.
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * sun4v DR Utility functions
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin#include <sys/types.h>
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin#include <sys/cmn_err.h>
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin#include <sys/sunddi.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <sys/note.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <sys/sysevent.h>
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin#include <sys/sysevent/dr.h>
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin#include <sys/sysevent/eventdefs.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <sys/ldoms.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <sys/dr_util.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinextern int ppvm_enable;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinboolean_t
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chindr_is_disabled(dr_type_t type)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin{
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * The type argument is currently unused. However, it
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * keeps the interface flexible enough to allows for
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin * only disabling certain types of DR.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin _NOTE(ARGUNUSED(type))
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin /*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * DR requires that the kernel is using its own CIF
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * handler. If that is not the case, either because
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * domaining has been explicitly disabled, or because
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin * the firmware does not support it, the system must
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * remain static and DR must be disabled.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (!domaining_enabled()) {
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin cmn_err(CE_NOTE, "!Kernel CIF handler is not enabled, DR "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "is not available\n");
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin return (B_TRUE);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin }
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (type == DR_TYPE_MEM && ppvm_enable == 0) {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin cmn_err(CE_NOTE, "!Memory DR is disabled\n");
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin return (B_TRUE);
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin return (B_FALSE);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin}
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Generate a DR sysevent based on the type of resource and
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * sysevent hint specified. The hint indicates whether the
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin * resource was added or removed.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinvoid
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chindr_generate_event(dr_type_t type, int se_hint)
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin{
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin int rv;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin sysevent_id_t eid;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin sysevent_t *ev = NULL;
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin sysevent_attr_list_t *evnt_attr_list = NULL;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin sysevent_value_t evnt_val;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin static char pubname[] = SUNW_KERN_PUB"dr";
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin DR_DBG_ALL("generate_event: type=%s, hint=%s\n", DR_TYPE2STR(type),
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin SE_HINT2STR(se_hint));
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /*
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin * Add the attachment point attribute
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin ev = sysevent_alloc(EC_DR, ESC_DR_AP_STATE_CHANGE, pubname, KM_SLEEP);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin evnt_val.value_type = SE_DATA_TYPE_STRING;
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin evnt_val.value.sv_string = DR_TYPE2STR(type);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin rv = sysevent_add_attr(&evnt_attr_list, DR_AP_ID, &evnt_val, KM_SLEEP);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (rv != 0) {
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin DR_DBG_ALL("generate_event: failed to add attr '%s' for "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "'%s' event\n", DR_AP_ID, EC_DR);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin goto done;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin }
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Add the DR hint attribute
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin evnt_val.value_type = SE_DATA_TYPE_STRING;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin evnt_val.value.sv_string = SE_HINT2STR(se_hint);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin rv = sysevent_add_attr(&evnt_attr_list, DR_HINT, &evnt_val, KM_SLEEP);
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin if (rv != 0) {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin DR_DBG_ALL("generate_event: failed to add attr '%s' for "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "'%s' event\n", DR_HINT, EC_DR);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin sysevent_free_attr(evnt_attr_list);
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin goto done;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /*
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin * Attach the attribute list to the event
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin rv = sysevent_attach_attributes(ev, evnt_attr_list);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (rv != 0) {
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin DR_DBG_ALL("generate_event: failed to add attr list for "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "'%s' event\n", EC_DR);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin sysevent_free_attr(evnt_attr_list);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin goto done;
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Log the event
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin rv = log_sysevent(ev, KM_NOSLEEP, &eid);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (rv != 0) {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin DR_DBG_ALL("generate_event: failed to log event (%d)\n", rv);
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chindone:
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (ev != NULL)
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin sysevent_free(ev);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin}
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin * Debugging Features
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#ifdef DEBUG
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chinuint_t dr_debug = 0x0;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#define BYTESPERLINE 8
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#define LINEWIDTH ((BYTESPERLINE * 3) + (BYTESPERLINE + 2) + 1)
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin#define ASCIIOFFSET ((BYTESPERLINE * 3) + 2)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#define ISPRINT(c) ((c >= ' ') && (c <= '~'))
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin * Output a buffer formatted with a set number of bytes on
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * each line. Append each line with the ASCII equivalent of
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * each byte if it falls within the printable ASCII range,
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * and '.' otherwise.
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinvoid
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chindr_dbg_dump_msg(void *buf, size_t len)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin{
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin int i, j;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin char *msg = buf;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin char *curr;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin char *aoff;
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin char line[LINEWIDTH];
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* abort if not debugging transport */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if (!(dr_debug & DR_DBG_FLAG_TRANS)) {
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin return;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* walk the buffer one line at a time */
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin for (i = 0; i < len; i += BYTESPERLINE) {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin bzero(line, LINEWIDTH);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin curr = line;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin aoff = line + ASCIIOFFSET;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /*
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin * Walk the bytes in the current line, storing
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * the hex value for the byte as well as the
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * ASCII representation in a temporary buffer.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * All ASCII values are placed at the end of
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin * the line.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin for (j = 0; (j < BYTESPERLINE) && ((i + j) < len); j++) {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin (void) sprintf(curr, " %02x", msg[i + j]);
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin *aoff = (ISPRINT(msg[i + j])) ? msg[i + j] : '.';
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin curr += 3;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin aoff++;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin }
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * Fill in to the start of the ASCII translation
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * with spaces. This will only be necessary if
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin * this is the last line and there are not enough
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * bytes to fill the whole line.
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin while (curr != (line + ASCIIOFFSET))
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin *curr++ = ' ';
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin DR_DBG_TRANS("%s\n", line);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin }
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin}
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#endif /* DEBUG */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin