101 lines
3.5 KiB
ArmAsm
101 lines
3.5 KiB
ArmAsm
/* $NetBSD: hd6446x_subr.S,v 1.2 2002/05/09 12:41:09 uch Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2002 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by UCHIYAMA Yasushi.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sh3/asm.h>
|
|
#include <sh3/locore.h>
|
|
#include <hpcsh/dev/hd6446x/hd6446xintcreg.h>
|
|
|
|
/*
|
|
* int hd6446x_intr_raise(int s):
|
|
* raise SR.IMASK and HD6446x ICU interrupt mask to 's'.
|
|
* if current SR.IMASK is greater equal 's',nothing to do.
|
|
* Returns previous SR.IMASK.
|
|
*/
|
|
NENTRY(hd6446x_intr_raise)
|
|
stc sr, r2
|
|
mov #0x78, r1
|
|
mov r2, r0
|
|
shll r1 /* r1 = 0xf0 */
|
|
and r1, r0 /* r0 = SR & 0xf0 */
|
|
cmp/ge r4, r0 /* r0 >= r4 ? T = 1 */
|
|
bt/s 1f
|
|
not r1, r1 /* r1 = 0xffffff0f */
|
|
and r1, r2 /* r2 = SR & ~0xf0 */
|
|
mov r4, r1
|
|
or r2, r1 /* r1 = (SR & ~0xf0) | s */
|
|
ldc r1, sr /* SR = r1 */
|
|
shlr2 r4
|
|
shlr r4
|
|
mov.l 2f, r1
|
|
add r4, r1
|
|
mov.w @r1, r2 /* r2 = hd6446x_imask[s >> 4] */
|
|
mov.l 3f, r1
|
|
mov.w r2, @r1 /* Set new interrupt mask to HD6446x */
|
|
1: rts
|
|
nop /* return (SR & 0xf0) */
|
|
.align 2
|
|
2: .long _C_LABEL(hd6446x_imask)
|
|
3: .long HD6446X_NIMR
|
|
|
|
/*
|
|
* int hd6446x_intr_resume(int s):
|
|
* Set SR.IMASK and HD6446x interrupt mask register to
|
|
* 's' interrupt level. Returns previous SR.IMASK.
|
|
*/
|
|
NENTRY(hd6446x_intr_resume)
|
|
mov r4, r0
|
|
shlr2 r0
|
|
shlr r0
|
|
mov.l 2f, r1
|
|
add r0, r1
|
|
mov.w @r1, r2 /* r2 = hd6446x_imask[s >> 4] */
|
|
mov.l 3f, r1
|
|
mov.w r2, @r1 /* Set new interrupt mask to HD6446x */
|
|
stc sr, r0 /* r0 = SR */
|
|
mov #0x78, r2
|
|
shll r2 /* r2 = 0x000000f0 */
|
|
not r2, r1 /* r1 = 0xffffff0f */
|
|
and r0, r1 /* r1 = (SR & ~0xf0) */
|
|
or r1, r4 /* r4 = (SR & ~0xf0) | level */
|
|
ldc r4, sr /* Set new IMASK to SR */
|
|
rts
|
|
and r2, r0 /* return (SR & 0xf0) */
|
|
.align 2
|
|
2: .long _C_LABEL(hd6446x_imask)
|
|
3: .long HD6446X_NIMR
|