2000-05-01 20:32:07 +00:00
|
|
|
/* $FreeBSD$ */
|
1998-07-12 16:17:54 +00:00
|
|
|
/* $NetBSD: pci_eb164_intr.s,v 1.5 1997/09/02 13:19:42 thorpej Exp $ */
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Copyright (c) 1996 Carnegie-Mellon University.
|
|
|
|
|
* All rights reserved.
|
|
|
|
|
*
|
|
|
|
|
* Author: Chris G. Demetriou
|
|
|
|
|
*
|
|
|
|
|
* Permission to use, copy, modify and distribute this software and
|
|
|
|
|
* its documentation is hereby granted, provided that both the copyright
|
|
|
|
|
* notice and this permission notice appear in all copies of the
|
|
|
|
|
* software, derivative works or modified versions, and any portions
|
|
|
|
|
* thereof, and that both notices appear in supporting documentation.
|
|
|
|
|
*
|
|
|
|
|
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
|
|
|
|
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
|
|
|
|
|
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
|
|
|
|
*
|
|
|
|
|
* Carnegie Mellon requests users of this software to return to
|
|
|
|
|
*
|
|
|
|
|
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
|
|
|
|
* School of Computer Science
|
|
|
|
|
* Carnegie Mellon University
|
|
|
|
|
* Pittsburgh PA 15213-3890
|
|
|
|
|
*
|
|
|
|
|
* any improvements or extensions that they make and grant Carnegie the
|
|
|
|
|
* rights to redistribute these changes.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* The description of how to enable and disable interrupts in the
|
|
|
|
|
* AlphaPC 164 motherboard technical reference manual is incorrect,
|
|
|
|
|
* at least for the OSF/1 PALcode.
|
|
|
|
|
*
|
|
|
|
|
* These functions were written by disassembling a Digital UNIX kernel's
|
|
|
|
|
* eb164_intrdsabl and eb164_intrenabl functions (because they had
|
|
|
|
|
* interesting names), and then playing with them to see how to call
|
|
|
|
|
* them correctly.
|
|
|
|
|
*
|
|
|
|
|
* It looks like the right thing to do is to call them with the interrupt
|
|
|
|
|
* request that you want to enable or disable (presumably in the range
|
|
|
|
|
* 0 -> 23, since there are 3 8-bit interrupt-enable bits in the
|
|
|
|
|
* interrupt mask PLD).
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#include <machine/asm.h>
|
|
|
|
|
|
|
|
|
|
__KERNEL_RCSID(0, "$NetBSD: pci_eb164_intr.s,v 1.5 1997/09/02 13:19:42 thorpej Exp $");
|
|
|
|
|
|
|
|
|
|
.text
|
|
|
|
|
LEAF(eb164_intr_enable,1)
|
|
|
|
|
mov a0, a1
|
|
|
|
|
ldiq a0, 0x34
|
|
|
|
|
call_pal PAL_cserve
|
|
|
|
|
RET
|
|
|
|
|
END(eb164_intr_enable)
|
|
|
|
|
|
|
|
|
|
.text
|
|
|
|
|
LEAF(eb164_intr_disable,1)
|
|
|
|
|
mov a0, a1
|
|
|
|
|
ldiq a0, 0x35
|
|
|
|
|
call_pal PAL_cserve
|
|
|
|
|
RET
|
2000-11-09 17:01:21 +00:00
|
|
|
END(eb164_intr_disable)
|
2000-12-04 17:21:46 +00:00
|
|
|
|
|
|
|
|
.text
|
|
|
|
|
LEAF(eb164_intr_enable_icsr,1)
|
|
|
|
|
mov a0, a1
|
|
|
|
|
ldiq a0, 0x34
|
|
|
|
|
call_pal PAL_cserve
|
|
|
|
|
ldiq a0, 0x08 /* Allow PALRES */
|
|
|
|
|
call_pal PAL_cserve
|
|
|
|
|
.long 0x66100118 /* hw_mfpr a0, icsr */
|
|
|
|
|
ldah a1, 0x0020 /* IMSK1 */
|
|
|
|
|
or a0, a1, a0
|
|
|
|
|
xor a0, a1, a0
|
|
|
|
|
.long 0x76100118 /* hw_mtpr a0, icsr */
|
|
|
|
|
ldiq a0, 0x09 /* Disable PALRES */
|
|
|
|
|
call_pal PAL_cserve
|
|
|
|
|
RET
|
|
|
|
|
END(eb164_intr_enable_icsr)
|
|
|
|
|
|
|
|
|
|
.text
|
|
|
|
|
LEAF(eb164_intr_disable_icsr,1)
|
|
|
|
|
ldiq a0, 0x08 /* Allow PALRES */
|
|
|
|
|
call_pal PAL_cserve
|
|
|
|
|
.long 0x66100118 /* hw_mfpr a0, icsr */
|
|
|
|
|
ldah a1, 0x0020 /* IMSK1 */
|
|
|
|
|
or a0, a1, a0
|
|
|
|
|
.long 0x76100118 /* hw_mtpr a0, icsr */
|
|
|
|
|
ldiq a0, 0x09 /* Disable PALRES */
|
|
|
|
|
call_pal PAL_cserve
|
|
|
|
|
RET
|
|
|
|
|
END(eb164_intr_disable_icsr)
|
