989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek/*
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Copyright (c) 2006 IronPort Systems Inc. <ambrisko@ironport.com>
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * All rights reserved.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek *
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Redistribution and use in source and binary forms, with or without
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * modification, are permitted provided that the following conditions
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * are met:
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * 1. Redistributions of source code must retain the above copyright
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * notice, this list of conditions and the following disclaimer.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * 2. Redistributions in binary form must reproduce the above copyright
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * notice, this list of conditions and the following disclaimer in the
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * documentation and/or other materials provided with the distribution.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek *
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * SUCH DAMAGE.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek/* $FreeBSD: src/sys/dev/ipmi/ipmi_kcs.c,v 1.3 2008/08/28 02:11:04 jhb */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek/*
12950e8eb3edc5da750616c08afe6281bf554aeeJerry Jelinek * Copyright 2013, Joyent, Inc. All rights reserved.
1e3934778d15dd08e911e1d050dd7a4949348d93Marcel Telka * Copyright 2013 Nexenta Systems, Inc. All rights reserved.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#include <sys/param.h>
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#include <sys/disp.h>
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#include <sys/systm.h>
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#include <sys/condvar.h>
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#include <sys/cmn_err.h>
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#include <sys/ddi.h>
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#include <sys/sunddi.h>
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#include <sys/ipmi.h>
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#include "ipmivars.h"
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic void kcs_clear_obf(struct ipmi_softc *, int);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic void kcs_error(struct ipmi_softc *);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic int kcs_wait_for_ibf(struct ipmi_softc *, int);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic int kcs_wait_for_obf(struct ipmi_softc *, int);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#define RETRY_USECS 100
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic clock_t timeout_usecs;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic int
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekkcs_wait_for_ibf(struct ipmi_softc *sc, int state)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek{
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek int status;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek clock_t i;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = INB(sc, KCS_CTL_STS);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (state == 0) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* WAIT FOR IBF = 0 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek for (i = 0; i < timeout_usecs && status & KCS_STATUS_IBF;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek i += RETRY_USECS) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek drv_usecwait(RETRY_USECS);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = INB(sc, KCS_CTL_STS);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek } else {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* WAIT FOR IBF = 1 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek for (i = 0; i < timeout_usecs && !(status & KCS_STATUS_IBF);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek i += RETRY_USECS) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek drv_usecwait(RETRY_USECS);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = INB(sc, KCS_CTL_STS);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (status);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek}
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic int
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekkcs_wait_for_obf(struct ipmi_softc *sc, int state)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek{
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek int status;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek clock_t i;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = INB(sc, KCS_CTL_STS);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (state == 0) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* WAIT FOR OBF = 0 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek for (i = 0; i < timeout_usecs && status & KCS_STATUS_OBF;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek i += RETRY_USECS) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek drv_usecwait(RETRY_USECS);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = INB(sc, KCS_CTL_STS);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek } else {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* WAIT FOR OBF = 1 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek for (i = 0; i < timeout_usecs && !(status & KCS_STATUS_OBF);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek i += RETRY_USECS) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek drv_usecwait(RETRY_USECS);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = INB(sc, KCS_CTL_STS);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (status);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek}
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic void
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekkcs_clear_obf(struct ipmi_softc *sc, int status)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek{
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Clear OBF */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (status & KCS_STATUS_OBF) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek (void) INB(sc, KCS_DATA);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek}
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic void
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekkcs_error(struct ipmi_softc *sc)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek{
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek int retry, status;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek uchar_t data;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek for (retry = 0; retry < 2; retry++) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Wait for IBF = 0 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = kcs_wait_for_ibf(sc, 0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* ABORT */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek OUTB(sc, KCS_CTL_STS, KCS_CONTROL_GET_STATUS_ABORT);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Wait for IBF = 0 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = kcs_wait_for_ibf(sc, 0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Clear OBF */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek kcs_clear_obf(sc, status);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (status & KCS_STATUS_OBF) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek data = INB(sc, KCS_DATA);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (data != 0)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN,
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek "KCS Error Data %02x", data);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* 0x00 to DATA_IN */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek OUTB(sc, KCS_DATA, 0x00);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Wait for IBF = 0 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = kcs_wait_for_ibf(sc, 0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (KCS_STATUS_STATE(status) == KCS_STATUS_STATE_READ) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Wait for OBF = 1 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = kcs_wait_for_obf(sc, 1);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Read error status */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek data = INB(sc, KCS_DATA);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (data != 0)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "KCS error: %02x", data);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Write READ into Data_in */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek OUTB(sc, KCS_DATA, KCS_DATA_IN_READ);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Wait for IBF = 0 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = kcs_wait_for_ibf(sc, 0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* IDLE STATE */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (KCS_STATUS_STATE(status) == KCS_STATUS_STATE_IDLE) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Wait for OBF = 1 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = kcs_wait_for_obf(sc, 1);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Clear OBF */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek kcs_clear_obf(sc, status);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "KCS: Error retry exhausted");
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek}
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek/*
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Start to write a request. Waits for IBF to clear and then sends the
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * WR_START command.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic int
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekkcs_start_write(struct ipmi_softc *sc)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek{
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek int retry, status;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek for (retry = 0; retry < 10; retry++) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Wait for IBF = 0 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = kcs_wait_for_ibf(sc, 0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Clear OBF */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek kcs_clear_obf(sc, status);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Write start to command */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek OUTB(sc, KCS_CTL_STS, KCS_CONTROL_WRITE_START);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Wait for IBF = 0 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = kcs_wait_for_ibf(sc, 0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (KCS_STATUS_STATE(status) == KCS_STATUS_STATE_WRITE)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek break;
12950e8eb3edc5da750616c08afe6281bf554aeeJerry Jelinek delay(drv_usectohz(1000000));
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (KCS_STATUS_STATE(status) != KCS_STATUS_STATE_WRITE)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* error state */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Clear OBF */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek kcs_clear_obf(sc, status);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (1);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek}
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek/*
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Write a byte of the request message, excluding the last byte of the
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * message which requires special handling.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic int
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekkcs_write_byte(struct ipmi_softc *sc, uchar_t data)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek{
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek int status;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Data to Data */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek OUTB(sc, KCS_DATA, data);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Wait for IBF = 0 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = kcs_wait_for_ibf(sc, 0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (KCS_STATUS_STATE(status) != KCS_STATUS_STATE_WRITE)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Clear OBF */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek kcs_clear_obf(sc, status);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (1);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek}
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek/*
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Write the last byte of a request message.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic int
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekkcs_write_last_byte(struct ipmi_softc *sc, uchar_t data)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek{
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek int status;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Write end to command */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek OUTB(sc, KCS_CTL_STS, KCS_CONTROL_WRITE_END);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Wait for IBF = 0 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = kcs_wait_for_ibf(sc, 0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (KCS_STATUS_STATE(status) != KCS_STATUS_STATE_WRITE)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* error state */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Clear OBF */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek kcs_clear_obf(sc, status);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Send data byte to DATA. */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek OUTB(sc, KCS_DATA, data);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (1);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek}
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek/*
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Read one byte of the reply message.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic int
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekkcs_read_byte(struct ipmi_softc *sc, uchar_t *data)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek{
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek int status;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Wait for IBF = 0 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = kcs_wait_for_ibf(sc, 0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Read State */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (KCS_STATUS_STATE(status) == KCS_STATUS_STATE_READ) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Wait for OBF = 1 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = kcs_wait_for_obf(sc, 1);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Read Data_out */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek *data = INB(sc, KCS_DATA);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Write READ into Data_in */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek OUTB(sc, KCS_DATA, KCS_DATA_IN_READ);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (1);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Idle State */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (KCS_STATUS_STATE(status) == KCS_STATUS_STATE_IDLE) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Wait for OBF = 1 */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = kcs_wait_for_obf(sc, 1);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Read Dummy */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek (void) INB(sc, KCS_DATA);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (2);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Error State */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek}
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek/*
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Send a request message and collect the reply. Returns true if we
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * succeed.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic int
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekkcs_polled_request(struct ipmi_softc *sc, struct ipmi_request *req)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek{
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek uchar_t *cp, data;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek int i, state;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Send the request. */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (!kcs_start_write(sc)) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "KCS: Failed to start write");
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek goto fail;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#ifdef KCS_DEBUG
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_NOTE, "KCS: WRITE_START... ok");
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#endif
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (!kcs_write_byte(sc, req->ir_addr)) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "KCS: Failed to write address");
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek goto fail;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#ifdef KCS_DEBUG
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_NOTE, "KCS: Wrote address: %02x", req->ir_addr);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#endif
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (req->ir_requestlen == 0) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (!kcs_write_last_byte(sc, req->ir_command)) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN,
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek "KCS: Failed to write command");
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek goto fail;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#ifdef KCS_DEBUG
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_NOTE, "KCS: Wrote command: %02x",
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req->ir_command);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#endif
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek } else {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (!kcs_write_byte(sc, req->ir_command)) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN,
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek "KCS: Failed to write command");
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek goto fail;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#ifdef KCS_DEBUG
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_NOTE, "KCS: Wrote command: %02x",
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req->ir_command);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#endif
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cp = req->ir_request;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek for (i = 0; i < req->ir_requestlen - 1; i++) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (!kcs_write_byte(sc, *cp++)) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN,
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek "KCS: Failed to write data byte %d",
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek i + 1);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek goto fail;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#ifdef KCS_DEBUG
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_NOTE, "KCS: Wrote data: %02x",
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cp[-1]);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#endif
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (!kcs_write_last_byte(sc, *cp)) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN,
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek "KCS: Failed to write last dta byte");
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek goto fail;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#ifdef KCS_DEBUG
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_NOTE, "KCS: Wrote last data: %02x",
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek *cp);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#endif
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Read the reply. First, read the NetFn/LUN. */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (kcs_read_byte(sc, &data) != 1) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "KCS: Failed to read address");
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek goto fail;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#ifdef KCS_DEBUG
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_NOTE, "KCS: Read address: %02x", data);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#endif
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (data != IPMI_REPLY_ADDR(req->ir_addr)) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "KCS: Reply address mismatch");
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek goto fail;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Next we read the command. */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (kcs_read_byte(sc, &data) != 1) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "KCS: Failed to read command");
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek goto fail;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#ifdef KCS_DEBUG
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_NOTE, "KCS: Read command: %02x", data);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#endif
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (data != req->ir_command) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "KCS: Command mismatch");
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek goto fail;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Next we read the completion code. */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (kcs_read_byte(sc, &req->ir_compcode) != 1) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "KCS: Failed to read completion code");
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek goto fail;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#ifdef KCS_DEBUG
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_NOTE, "KCS: Read completion code: %02x",
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req->ir_compcode);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#endif
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Finally, read the reply from the BMC. */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek i = 0;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek for (;;) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek state = kcs_read_byte(sc, &data);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (state == 0) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN,
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek "KCS: Read failed on byte %d", i + 1);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek goto fail;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (state == 2)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek break;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (i < req->ir_replybuflen) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req->ir_reply[i] = data;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#ifdef KCS_DEBUG
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_NOTE, "KCS: Read data %02x",
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek data);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek } else {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN,
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek "KCS: Read short %02x byte %d", data, i + 1);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#endif
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek i++;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req->ir_replylen = i;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#ifdef KCS_DEBUG
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_NOTE, "KCS: READ finished (%d bytes)", i);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (req->ir_replybuflen < i)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#else
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (req->ir_replybuflen < i && req->ir_replybuflen != 0)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#endif
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "KCS: Read short: %d buffer, %d actual",
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek (int)(req->ir_replybuflen), i);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (1);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekfail:
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek kcs_error(sc);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek}
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic void
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekkcs_loop(void *arg)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek{
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek struct ipmi_softc *sc = arg;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek struct ipmi_request *req;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek int i, ok;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek IPMI_LOCK(sc);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek while ((req = ipmi_dequeue_request(sc)) != NULL) {
1e3934778d15dd08e911e1d050dd7a4949348d93Marcel Telka IPMI_UNLOCK(sc);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek ok = 0;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek for (i = 0; i < 3 && !ok; i++)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek ok = kcs_polled_request(sc, req);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (ok)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req->ir_error = 0;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek else
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req->ir_error = EIO;
1e3934778d15dd08e911e1d050dd7a4949348d93Marcel Telka IPMI_LOCK(sc);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek ipmi_complete_request(sc, req);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek IPMI_UNLOCK(sc);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek}
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekstatic int
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekkcs_startup(struct ipmi_softc *sc)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek{
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek sc->ipmi_kthread = taskq_create_proc("ipmi_kcs", 1, minclsyspri, 1, 1,
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek curzone->zone_zsched, TASKQ_PREPOPULATE);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (taskq_dispatch(sc->ipmi_kthread, kcs_loop, (void *) sc,
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek TQ_SLEEP) == NULL) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek taskq_destroy(sc->ipmi_kthread);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (1);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek}
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekint
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekipmi_kcs_attach(struct ipmi_softc *sc)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek{
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek int status;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Setup function pointers. */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek sc->ipmi_startup = kcs_startup;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek sc->ipmi_enqueue_request = ipmi_polled_enqueue_request;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* See if we can talk to the controller. */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek status = INB(sc, KCS_CTL_STS);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (status == 0xff) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_CONT, "!KCS couldn't find it");
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (ENXIO);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek }
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek timeout_usecs = drv_hztousec(MAX_TIMEOUT);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#ifdef KCS_DEBUG
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_NOTE, "KCS: initial state: %02x", status);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek#endif
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (status & KCS_STATUS_OBF ||
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek KCS_STATUS_STATE(status) != KCS_STATUS_STATE_IDLE)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek kcs_error(sc);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek return (0);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek}