File: [local] / sys / arch / hp300 / stand / common / nhpib.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:05:35 2008 UTC (16 years, 4 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: nhpib.c,v 1.4 2006/08/17 06:31:10 miod Exp $ */
/* $NetBSD: nhpib.c,v 1.5 1995/08/05 16:47:46 thorpej Exp $ */
/*
* Copyright (c) 1982, 1990, 1993
* 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.
*
* @(#)nhpib.c 8.1 (Berkeley) 6/10/93
*/
/*
* Internal/98624 HPIB driver
*/
#include <sys/param.h>
#include <hp300/dev/nhpibreg.h>
#include "samachdep.h"
#include "hpibvar.h"
int nhpibiwait(struct nhpibdevice *);
int nhpibowait(struct nhpibdevice *);
void nhpibreset(int);
int
nhpibinit(int unit)
{
struct hpib_softc *hs = &hpib_softc[unit];
struct nhpibdevice *hd = (struct nhpibdevice *)hs->sc_addr;
extern int internalhpib;
if ((int)hd == internalhpib) {
hs->sc_type = HPIBA;
hs->sc_ba = HPIBA_BA;
}
else if (hd->hpib_cid == HPIBB) {
hs->sc_type = HPIBB;
hs->sc_ba = hd->hpib_csa & CSA_BA;
}
else
return(0);
nhpibreset(unit);
return(1);
}
void
nhpibreset(int unit)
{
struct hpib_softc *hs = &hpib_softc[unit];
struct nhpibdevice *hd;
hd = (struct nhpibdevice *)hs->sc_addr;
hd->hpib_acr = AUX_SSWRST;
hd->hpib_ar = hs->sc_ba;
hd->hpib_lim = 0;
hd->hpib_mim = 0;
hd->hpib_acr = AUX_CDAI;
hd->hpib_acr = AUX_CSHDW;
hd->hpib_acr = AUX_SSTD1;
hd->hpib_acr = AUX_SVSTD1;
hd->hpib_acr = AUX_CPP;
hd->hpib_acr = AUX_CHDFA;
hd->hpib_acr = AUX_CHDFE;
hd->hpib_acr = AUX_RHDF;
hd->hpib_acr = AUX_CSWRST;
hd->hpib_acr = AUX_TCA;
hd->hpib_acr = AUX_CSRE;
hd->hpib_acr = AUX_SSIC;
DELAY(100);
hd->hpib_acr = AUX_CSIC;
hd->hpib_acr = AUX_SSRE;
hd->hpib_data = C_DCL;
DELAY(100000);
}
int
nhpibsend(int unit, int slave, int sec, char *buf, int cnt)
{
struct hpib_softc *hs = &hpib_softc[unit];
struct nhpibdevice *hd;
int origcnt = cnt;
hd = (struct nhpibdevice *)hs->sc_addr;
hd->hpib_acr = AUX_TCA;
hd->hpib_data = C_UNL;
nhpibowait(hd);
hd->hpib_data = C_TAG + hs->sc_ba;
hd->hpib_acr = AUX_STON;
nhpibowait(hd);
hd->hpib_data = C_LAG + slave;
nhpibowait(hd);
if (sec != -1) {
hd->hpib_data = C_SCG + sec;
nhpibowait(hd);
}
hd->hpib_acr = AUX_GTS;
if (cnt) {
while (--cnt) {
hd->hpib_data = *buf++;
if (nhpibowait(hd) < 0)
break;
}
hd->hpib_acr = AUX_EOI;
hd->hpib_data = *buf;
if (nhpibowait(hd) < 0)
cnt++;
hd->hpib_acr = AUX_TCA;
}
return(origcnt - cnt);
}
int
nhpibrecv(int unit, int slave, int sec, char *buf, int cnt)
{
struct hpib_softc *hs = &hpib_softc[unit];
struct nhpibdevice *hd;
int origcnt = cnt;
hd = (struct nhpibdevice *)hs->sc_addr;
hd->hpib_acr = AUX_TCA;
hd->hpib_data = C_UNL;
nhpibowait(hd);
hd->hpib_data = C_LAG + hs->sc_ba;
hd->hpib_acr = AUX_SLON;
nhpibowait(hd);
hd->hpib_data = C_TAG + slave;
nhpibowait(hd);
if (sec != -1) {
hd->hpib_data = C_SCG + sec;
nhpibowait(hd);
}
hd->hpib_acr = AUX_RHDF;
hd->hpib_acr = AUX_GTS;
if (cnt) {
while (--cnt >= 0) {
if (nhpibiwait(hd) < 0)
break;
*buf++ = hd->hpib_data;
}
cnt++;
hd->hpib_acr = AUX_TCA;
}
return(origcnt - cnt);
}
int
nhpibppoll(int unit)
{
struct hpib_softc *hs = &hpib_softc[unit];
struct nhpibdevice *hd;
int ppoll;
hd = (struct nhpibdevice *)hs->sc_addr;
hd->hpib_acr = AUX_SPP;
DELAY(25);
ppoll = hd->hpib_cpt;
hd->hpib_acr = AUX_CPP;
return(ppoll);
}
int
nhpibowait(struct nhpibdevice *hd)
{
int timo = 100000;
while ((hd->hpib_mis & MIS_BO) == 0 && --timo)
;
if (timo == 0)
return(-1);
return(0);
}
int
nhpibiwait(struct nhpibdevice *hd)
{
int timo = 100000;
while ((hd->hpib_mis & MIS_BI) == 0 && --timo)
;
if (timo == 0)
return(-1);
return(0);
}