17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*d24234c2SJerry Gilliam * Common Development and Distribution License (the "License"). 6*d24234c2SJerry Gilliam * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 22*d24234c2SJerry Gilliam * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 23*d24234c2SJerry Gilliam * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate #include <sys/promif.h> 277c478bd9Sstevel@tonic-gate #include <sys/promimpl.h> 287c478bd9Sstevel@tonic-gate 297c478bd9Sstevel@tonic-gate /* 307c478bd9Sstevel@tonic-gate * Provide 10 millisecond heartbeat for the PROM. A client that has taken over 317c478bd9Sstevel@tonic-gate * the trap table and clock interrupts, but is not quite ready to take over the 327c478bd9Sstevel@tonic-gate * function of polling the input-device for an abort sequence (L1/A or BREAK) 337c478bd9Sstevel@tonic-gate * may use this function to instruct the PROM to poll the keyboard. If used, 347c478bd9Sstevel@tonic-gate * this function should be called every 10 milliseconds. 357c478bd9Sstevel@tonic-gate */ 367c478bd9Sstevel@tonic-gate int prom_heartbeat(int msecs)377c478bd9Sstevel@tonic-gateprom_heartbeat(int msecs) 387c478bd9Sstevel@tonic-gate { 397c478bd9Sstevel@tonic-gate cell_t ci[5]; 407c478bd9Sstevel@tonic-gate 417c478bd9Sstevel@tonic-gate ci[0] = p1275_ptr2cell("SUNW,heartbeat"); /* Service name */ 427c478bd9Sstevel@tonic-gate ci[1] = (cell_t)1; /* #argument cells */ 437c478bd9Sstevel@tonic-gate ci[2] = (cell_t)1; /* #result cells */ 447c478bd9Sstevel@tonic-gate ci[3] = p1275_int2cell(msecs); /* Arg1: msecs */ 457c478bd9Sstevel@tonic-gate ci[4] = (cell_t)0; /* Prime the result */ 467c478bd9Sstevel@tonic-gate 477c478bd9Sstevel@tonic-gate promif_preprom(); 487c478bd9Sstevel@tonic-gate (void) p1275_cif_handler(&ci); 497c478bd9Sstevel@tonic-gate promif_postprom(); 507c478bd9Sstevel@tonic-gate 517c478bd9Sstevel@tonic-gate return (p1275_cell2int(ci[4])); /* Res1: abort-flag */ 527c478bd9Sstevel@tonic-gate } 53