File: [local] / sys / arch / hp300 / dev / maskbits.h (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:05:41 2008 UTC (16 years, 5 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
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/* $OpenBSD: maskbits.h,v 1.6 2006/08/05 09:58:56 miod Exp $ */
/* $NetBSD: maskbits.h,v 1.3 1997/03/31 07:37:28 scottr Exp $ */
/*-
* Copyright (c) 1994
* The Regents of the University of California. All rights reserved.
*
* 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. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
* @(#)maskbits.h 8.2 (Berkeley) 3/21/94
*/
/*
* Derived from X11R4
*/
/* the following notes use the following conventions:
SCREEN LEFT SCREEN RIGHT
in this file and maskbits.c, left and right refer to screen coordinates,
NOT bit numbering in registers.
rasops_lmask[n]
bits[0,n-1] = 0 bits[n,31] = 1
rasops_rmask[n] =
bits[0,n-1] = 1 bits[n,31] = 0
maskbits(x, w, startmask, endmask, nlw)
for a span of width w starting at position x, returns
a mask for ragged bits at start, mask for ragged bits at end,
and the number of whole longwords between the ends.
*/
#define maskbits(x, w, startmask, endmask, nlw) \
do { \
startmask = rasops_lmask[(x) & 0x1f]; \
endmask = rasops_rmask[((x) + (w)) & 0x1f]; \
if (startmask) \
nlw = (((w) - (32 - ((x) & 0x1f))) >> 5); \
else \
nlw = (w) >> 5; \
} while (0)
#define FASTGETBITS(psrc, x, w, dst) \
asm ("bfextu %3{%1:%2},%0" \
: "=d" (dst) : "di" (x), "di" (w), "o" (*(char *)(psrc)))
#define FASTPUTBITS(src, x, w, pdst) \
asm ("bfins %3,%0{%1:%2}" \
: "=o" (*(char *)(pdst)) \
: "di" (x), "di" (w), "d" (src), "0" (*(char *) (pdst)))
#define getandputrop(psrc, srcbit, dstbit, width, pdst, rop) \
do { \
unsigned int _tmpdst; \
if (rop == RR_CLEAR) \
_tmpdst = 0; \
else \
FASTGETBITS(psrc, srcbit, width, _tmpdst); \
FASTPUTBITS(_tmpdst, dstbit, width, pdst); \
} while (0)
#define getunalignedword(psrc, x, dst) \
do { \
int _tmp; \
FASTGETBITS(psrc, x, 32, _tmp); \
dst = _tmp; \
} while (0)