1/* $NetBSD: pci_eb66_intr.s,v 1.4 2020/09/22 15:24:02 thorpej Exp $ */ 2 3/* 4 * Copyright (c) 1996 Carnegie-Mellon University. 5 * All rights reserved. 6 * 7 * Author: Chris G. Demetriou 8 * 9 * Permission to use, copy, modify and distribute this software and 10 * its documentation is hereby granted, provided that both the copyright 11 * notice and this permission notice appear in all copies of the 12 * software, derivative works or modified versions, and any portions 13 * thereof, and that both notices appear in supporting documentation. 14 * 15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 * 19 * Carnegie Mellon requests users of this software to return to 20 * 21 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 22 * School of Computer Science 23 * Carnegie Mellon University 24 * Pittsburgh PA 15213-3890 25 * 26 * any improvements or extensions that they make and grant Carnegie the 27 * rights to redistribute these changes. 28 */ 29 30/* 31 * This file hacked from pci_eb164_intr.s 32 * 33 * These functions were written by disassembling a Digital UNIX kernel's 34 * eb66_intrdsabl and eb66_intrenabl functions (because they had 35 * interesting names, and looked like the eb164 versions which were 36 * known to already work), and then playing with them to see how to call 37 * them correctly. 38 * 39 * It looks like the right thing to do is to call them with the interrupt 40 * request that you want to enable or disable (presumably in the range 41 * 0 -> 23, since there are 3 8-bit interrupt-enable bits in the 42 * interrupt mask PLD). 43 */ 44 45#include <machine/asm.h> 46 47__KERNEL_RCSID(0, "$NetBSD: pci_eb66_intr.s,v 1.4 2020/09/22 15:24:02 thorpej Exp $"); 48 49/* 50 * void eb66_intr_enable(pci_chipset_tag_t pc, int irq); 51 * void eb66_intr_disable(pci_chipset_tag_t pc, int irq); 52 */ 53 54 .text 55LEAF(eb66_intr_enable,2) 56 ldiq a0, 0x34 57 call_pal PAL_cserve 58 RET 59 END(eb66_intr_enable) 60 61 .text 62LEAF(eb66_intr_disable,2) 63 ldiq a0, 0x35 64 call_pal PAL_cserve 65 RET 66 END(eb66_intr_disable) 67