File: [local] / sys / arch / vax / vax / cfl.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:08:45 2008 UTC (16 years, 3 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: cfl.c,v 1.6 2006/01/20 23:27:26 miod Exp $ */
/* $NetBSD: cfl.c,v 1.2 1998/04/13 12:10:26 ragge Exp $ */
/*-
* Copyright (c) 1996 Ludd, University of Lule}, Sweden.
* Copyright (c) 1982, 1986 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.
*
* @(#)crl.c 7.5 (Berkeley) 5/9/91
*/
/*
* Console floppy driver for 11/780.
* XXX - Does not work. (Not completed)
* Included here if someone wants to finish it.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/buf.h>
#include <machine/cpu.h>
#include <machine/mtpr.h>
#include <machine/sid.h>
#include <machine/scb.h>
#include <vax/vax/gencons.h>
#define CFL_TRACKS 77
#define CFL_SECTORS 26
#define CFL_BYTESPERSEC 128
#define CFL_MAXSEC (CFL_TRACKS * CFL_SECTORS)
#define FLOP_READSECT 0x900
#define FLOP_WRITSECT 0x901
#define FLOP_DATA 0x100
#define FLOP_COMPLETE 0x200
struct {
short cfl_state; /* open and busy flags */
short cfl_active; /* driver state flag */
struct buf *cfl_buf; /* buffer we're using */
unsigned char *cfl_xaddr; /* transfer address */
short cfl_errcnt;
} cfltab;
#define IDLE 0
#define OPEN 1
#define BUSY 2
#define CFL_IDLE 0
#define CFL_START 1
#define CFL_SECTOR 2
#define CFL_DATA 3
#define CFL_TRACK 4
#define CFL_NEXT 5
#define CFL_FINISH 6
#define CFL_GETIN 7
static void cflstart(void);
int cflopen(dev_t, int, struct proc *);
int cflclose(dev_t, int, struct proc *);
int cflrw(dev_t, struct uio *, int);
/*ARGSUSED*/
int
cflopen(dev, flag, p)
dev_t dev;
int flag;
struct proc *p;
{
if (vax_cputype != VAX_780)
return (ENXIO);
if (cfltab.cfl_state != IDLE)
return (EALREADY);
cfltab.cfl_state = OPEN;
cfltab.cfl_buf = geteblk(512);
return (0);
}
/*ARGSUSED*/
int
cflclose(dev, flag, p)
dev_t dev;
int flag;
struct proc *p;
{
brelse(cfltab.cfl_buf);
cfltab.cfl_state = IDLE;
return 0;
}
/*ARGSUSED*/
int
cflrw(dev, uio, flag)
dev_t dev;
struct uio *uio;
int flag;
{
register struct buf *bp;
register int i;
register int s;
int error;
if (uio->uio_resid == 0)
return (0);
s = spl4();
while (cfltab.cfl_state == BUSY)
tsleep((caddr_t)&cfltab, PRIBIO, "cflrw", 0);
cfltab.cfl_state = BUSY;
splx(s);
bp = cfltab.cfl_buf;
error = 0;
while ((i = imin(CFL_BYTESPERSEC, uio->uio_resid)) > 0) {
bp->b_blkno = uio->uio_offset>>7;
if (bp->b_blkno >= CFL_MAXSEC ||
(uio->uio_offset & 0x7F) != 0) {
error = EIO;
break;
}
if (uio->uio_rw == UIO_WRITE) {
error = uiomove(bp->b_data, i, uio);
if (error)
break;
}
bp->b_flags = uio->uio_rw == UIO_WRITE ? B_WRITE : B_READ;
s = spl4();
cflstart();
while ((bp->b_flags & B_DONE) == 0)
tsleep((caddr_t)bp, PRIBIO, "cflrw", 0);
splx(s);
if (bp->b_flags & B_ERROR) {
error = EIO;
break;
}
if (uio->uio_rw == UIO_READ) {
error = uiomove(bp->b_data, i, uio);
if (error)
break;
}
}
cfltab.cfl_state = OPEN;
wakeup((caddr_t)&cfltab);
return (error);
}
void
cflstart()
{
register struct buf *bp;
bp = cfltab.cfl_buf;
cfltab.cfl_errcnt = 0;
cfltab.cfl_xaddr = (unsigned char *) bp->b_data;
cfltab.cfl_active = CFL_START;
bp->b_resid = 0;
if ((mfpr(PR_TXCS) & GC_RDY) == 0)
/* not ready to receive order */
return;
cfltab.cfl_active = CFL_SECTOR;
mtpr(bp->b_flags & B_READ ? FLOP_READSECT : FLOP_WRITSECT, PR_TXDB);
#ifdef lint
cflintr();
#endif
}
void cfltint(int);
void
cfltint(arg)
int arg;
{
register struct buf *bp = cfltab.cfl_buf;
switch (cfltab.cfl_active) {
case CFL_START:/* do a read */
mtpr(bp->b_flags & B_READ ? FLOP_READSECT : FLOP_WRITSECT,
PR_TXDB);
cfltab.cfl_active = CFL_SECTOR;
break;
case CFL_SECTOR:/* send sector */
mtpr(FLOP_DATA | (int)bp->b_blkno % (CFL_SECTORS + 1), PR_TXDB);
cfltab.cfl_active = CFL_TRACK;
break;
case CFL_TRACK:
mtpr(FLOP_DATA | (int)bp->b_blkno / CFL_SECTORS, PR_TXDB);
cfltab.cfl_active = CFL_NEXT;
break;
case CFL_NEXT:
mtpr(FLOP_DATA | *cfltab.cfl_xaddr++, PR_TXDB);
if (--bp->b_bcount == 0)
cfltab.cfl_active = CFL_FINISH;
break;
}
}
void cflrint(int);
void
cflrint(ch)
int ch;
{
struct buf *bp = cfltab.cfl_buf;
switch (cfltab.cfl_active) {
case CFL_NEXT:
if ((bp->b_flags & B_READ) == B_READ)
cfltab.cfl_active = CFL_GETIN;
else {
cfltab.cfl_active = CFL_IDLE;
bp->b_flags |= B_DONE;
wakeup(bp);
}
break;
case CFL_GETIN:
*cfltab.cfl_xaddr++ = ch & 0377;
if (--bp->b_bcount==0) {
cfltab.cfl_active = CFL_IDLE;
bp->b_flags |= B_DONE;
wakeup(bp);
}
break;
}
}