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/*
* 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 (c) 1996-1998 by Sun Microsystems, Inc.
* All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stddef.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <sys/param.h>
#include <sys/obpdefs.h>
#include <sys/fhc.h>
#include <sys/ac.h>
#include <sys/sysctrl.h>
#include <sys/openpromio.h>
#include "mema_prom.h"
#include <config_admin.h>
/*
* PROM access routines to get and set disabled lists
* Based on code in the usr/src/cmd/eeprom directory.
*/
#define PROMDEV "/dev/openprom"
/*
* 128 is the size of the largest (currently) property name
* 8192 - MAXPROPSIZE - sizeof (int) is the size of the largest
* (currently) property value, viz. nvramrc.
* the sizeof(u_int) is from struct openpromio
*/
#define MAXPROPSIZE 128
#define MAXNAMESIZE MAXPROPSIZE
#define MAXVALSIZE (8192 - MAXPROPSIZE - sizeof (u_int))
#define BUFSIZE (MAXPROPSIZE + MAXVALSIZE + sizeof (u_int))
typedef union {
char buf[BUFSIZE];
struct openpromio opp;
} Oppbuf;
#define PROP_MEMORY_LIST "disabled-memory-list"
static int prom_read_one(mema_disabled_t *, int, int, char *, u_int);
static int prom_write_one(mema_disabled_t *, int, int, char *, u_int);
int
prom_read_disabled_list(mema_disabled_t *dp, int bd)
{
int prom_fd;
int ret;
(void) memset((void *)dp, 0, sizeof (*dp));
prom_fd = open(PROMDEV, O_RDONLY);
if (prom_fd == -1) {
return (0);
}
ret = prom_read_one(dp, bd, prom_fd,
PROP_MEMORY_LIST, PROM_MEMORY_DISABLED);
(void) close(prom_fd);
return (ret);
}
int
prom_write_disabled_list(mema_disabled_t *dp, int bd)
{
int prom_fd;
int ret;
prom_fd = open(PROMDEV, O_RDWR);
if (prom_fd == -1) {
return (0);
}
ret = prom_write_one(dp, bd, prom_fd,
PROP_MEMORY_LIST, PROM_MEMORY_DISABLED);
(void) close(prom_fd);
return (ret);
}
static int
prom_read_one(
mema_disabled_t *dp,
int bd,
int prom_fd,
char *var,
u_int bit)
{
Oppbuf oppbuf;
struct openpromio *opp = &oppbuf.opp;
int ret;
(void) memset((void *)&oppbuf, 0, sizeof (oppbuf));
(void) strncpy(opp->oprom_array, var, MAXNAMESIZE);
opp->oprom_size = MAXVALSIZE;
if (ioctl(prom_fd, OPROMGETOPT, opp) == -1) {
ret = 0;
} else
if (opp->oprom_size == 0) {
/* Not a failure - just not set to anything */
ret = 1;
} else {
char *cp;
int board;
ret = 1;
for (cp = opp->oprom_array; *cp != '\0'; cp++) {
switch (*cp) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
board = *cp - '0';
break;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
board = *cp - 'a' + 10;
break;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
board = *cp - 'A' + 10;
break;
default:
/* Ignore bad characters. */
/* TODO: maybe should set ret to 0? */
board = -1;
break;
}
if (board == bd)
*dp |= bit;
}
}
return (ret);
}
static int
prom_write_one(
mema_disabled_t *dp,
int bd,
int prom_fd,
char *var,
u_int bit)
{
Oppbuf in_oppbuf;
struct openpromio *in_opp = &in_oppbuf.opp;
Oppbuf oppbuf;
struct openpromio *opp = &oppbuf.opp;
int ret;
char *cp;
/* Setup output buffer. */
(void) memset((void *)&oppbuf, 0, sizeof (oppbuf));
(void) strncpy(opp->oprom_array, var, MAXNAMESIZE);
opp->oprom_size = strlen(var) + 1;
cp = opp->oprom_array + opp->oprom_size;
/*
* First read the existing list, filtering out 'bd' if 'bit'
* not set.
*/
(void) memset((void *)&in_oppbuf, 0, sizeof (in_oppbuf));
(void) strncpy(in_opp->oprom_array, var, MAXNAMESIZE);
in_opp->oprom_size = MAXVALSIZE;
if (ioctl(prom_fd, OPROMGETOPT, in_opp) != -1 &&
in_opp->oprom_size != 0) {
char *icp;
int board;
for (icp = in_opp->oprom_array; *icp != '\0'; icp++) {
switch (*icp) {
case '0': case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
case '8': case '9':
board = *icp - '0';
break;
case 'a': case 'b': case 'c':
case 'd': case 'e': case 'f':
board = *icp - 'a' + 10;
break;
case 'A': case 'B': case 'C':
case 'D': case 'E': case 'F':
board = *icp - 'A' + 10;
break;
default:
/* Ignore bad characters. */
continue;
}
/* If enabling this board ... */
if (board == bd && (*dp & bit) == 0)
continue;
*cp++ = "0123456789abcdef"[board];
opp->oprom_size++;
}
}
if ((*dp & bit) != 0) {
*cp++ = "0123456789abcdef"[bd];
opp->oprom_size++;
}
if (ioctl(prom_fd, OPROMSETOPT, opp) == -1) {
ret = 0;
} else {
ret = 1;
}
return (ret);
}
/*
* The PROM only has board-level disable of memory. If two banks are present
* on the board, both are either enabled or disabled at boot.
* The caller of this routine must set the PROM_MEMORY_PRESENT bits
* before calling this function.
*/
/*ARGSUSED*/
int
prom_viable_disabled_list(mema_disabled_t *dp)
{
#ifdef XXX
int board;
for (board = 0; board < MAX_BOARDS; board++) {
if ((dp->bank_A[board] & PROM_MEMORY_PRESENT) != 0 &&
(dp->bank_B[board] & PROM_MEMORY_PRESENT) != 0 &&
(dp->bank_A[board] & PROM_MEMORY_DISABLED) !=
(dp->bank_B[board] & PROM_MEMORY_DISABLED)) {
return (0);
}
}
#endif
return (1);
}
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