1/* $OpenBSD: pci_eb64plus_intr.s,v 1.2 2003/01/08 17:26:21 miod Exp $ */ 2/* $NetBSD: pci_eb64plus_intr.s,v 1.2 1997/09/02 13:19:43 thorpej Exp $ */ 3 4/* 5 * Copyright (c) 1996 Carnegie-Mellon University. 6 * All rights reserved. 7 * 8 * Author: Chris G. Demetriou 9 * 10 * Permission to use, copy, modify and distribute this software and 11 * its documentation is hereby granted, provided that both the copyright 12 * notice and this permission notice appear in all copies of the 13 * software, derivative works or modified versions, and any portions 14 * thereof, and that both notices appear in supporting documentation. 15 * 16 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 17 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 18 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 19 * 20 * Carnegie Mellon requests users of this software to return to 21 * 22 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 23 * School of Computer Science 24 * Carnegie Mellon University 25 * Pittsburgh PA 15213-3890 26 * 27 * any improvements or extensions that they make and grant Carnegie the 28 * rights to redistribute these changes. 29 */ 30 31/* 32 * This file hacked from pci_eb164_intr.s 33 * 34 * These functions were written by disassembling a Digital UNIX kernel's 35 * eb64p_intrdsabl and eb64p_intrenabl functions (because they had 36 * interesting names, and looked like the eb164 versions which were 37 * known to already work), and then playing with them to see how to call 38 * them correctly. 39 * 40 * It looks like the right thing to do is to call them with the interrupt 41 * request that you want to enable or disable (presumably in the range 42 * 0 -> 23, since there are 3 8-bit interrupt-enable bits in the 43 * interrupt mask PLD). 44 */ 45 46#include <machine/asm.h> 47 48 .text 49LEAF(eb64plus_intr_enable,1) 50 mov a0, a1 51 ldiq a0, 0x34 52 call_pal PAL_cserve 53 RET 54 END(eb64plus_intr_enable) 55 56 .text 57LEAF(eb64plus_intr_disable,1) 58 mov a0, a1 59 ldiq a0, 0x35 60 call_pal PAL_cserve 61 RET 62 END(eb64plus_intr_disable) 63