sg_unum.c revision 03831d35f7499c87d51205817c93e9a8d42c4bae
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/serengeti.h>
#include <sys/errno.h>
#include <sys/systm.h>
#include <sys/cmn_err.h>
/*
* When an ECC error occurs on an E$ DIMM, the error handling code requests a
* unum to provide a human-readable physical location to the part that
* experienced the error.
*
* Previously, on Serengeti and LW8, a prom call was made to get this
* information. However, calling COBP to do a simple string format is
* inefficient. All the necessary information is now kept here.
*
* Since this data is now kept in two places (COBP and here), care must be
* taken so that the two locations are kept the same. Any changes to the
* jnumber array will require a change to COBP code so that the two arrays
* match. Any changes to the unum string format will require changes in both
* the COBP code (to match the code here) and plat_ecc_unum.c (to read the
* new format). These changes should not be necessary, except to reflect a
* new cpu or board type.
*/
/*
* The following array holds the jnumbers for Ecache DIMMs. The first index
* is the proc position on the board (0 through 3) and the second index is
* the DIMM number (0 or 1).
*/
static int sg_j_number[SG_MAX_CMPS_PER_BD][SG_NUM_ECACHE_DIMMS_PER_CPU] = {
{ 4400, 4300 },
{ 5400, 5300 },
{ 6400, 6300 },
{ 7400, 7300 }
};
/*
* Generate the unum for the specified cpuid and physical address. Put the
* unum in buf, which is of size buflen. Return the length of the string in
* lenp.
*
* Return 0 if successful, and an error number otherwise.
*/
int
sg_get_ecacheunum(int cpuid, uint64_t physaddr, char *buf, uint_t buflen,
int *lenp)
{
int node = SG_PORTID_TO_NODEID(cpuid);
int board = SG_CPU_BD_PORTID_TO_BD_NUM(cpuid);
int proc = SG_PORTID_TO_CPU_POSN(cpuid);
int dimm = (physaddr & SG_ECACHE_DIMM_MASK) >> SG_ECACHE_DIMM_SHIFT;
/*
* node and dimm will always be valid. board and proc may be -1 if
* an invalid cpuid is passed in.
*/
if ((board == -1) || (proc == -1)) {
return (EINVAL);
}
*lenp = snprintf(buf, buflen, "/N%d/SB%d/P%d/E%d J%d",
node, board, proc, dimm, sg_j_number[proc][dimm]);
return (0);
}