File: [local] / sys / arch / sparc / dev / presto.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:08:05 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)
|
/* $OpenBSD: presto.c,v 1.13 2007/06/20 18:15:47 deraadt Exp $ */
/*
* Copyright (c) 2003, Miodrag Vallat.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/conf.h>
#include <sys/disk.h>
#include <sys/disklabel.h>
#include <sys/dkio.h>
#include <sys/fcntl.h>
#include <sys/stat.h>
#include <machine/autoconf.h>
#include <machine/conf.h>
#include <sparc/dev/sbusvar.h>
struct presto_softc {
struct device sc_dev;
struct disk sc_dk;
vsize_t sc_memsize; /* total NVRAM size */
caddr_t sc_mem; /* NVRAM kva */
char sc_model[16]; /* Prestoserve model */
};
/*
* The beginning of the NVRAM contains a few control and status values
*/
#define PSERVE_BATTERYSTATUS 0x07
#define PSBAT_CHARGING 0x10
#define PSBAT_CONNECTED 0x20
#define PSBAT_FAULT 0x40
#define PSERVE_DATASTATUS 0x0b
#define PSDATA_EMPTY 0x00
#define PSDATA_SAVED 0x01
/* reserved area size - needs to be rounded to a sector size for i/o */
#define PSERVE_RESERVED 0x0010
#define PSERVE_OFFSET roundup(PSERVE_RESERVED, DEV_BSIZE)
void prestostrategy(struct buf *);
void presto_attach(struct device *, struct device *, void *);
void presto_getdisklabel(dev_t, struct presto_softc *);
int presto_match(struct device *, void *, void *);
struct cfattach presto_ca = {
sizeof(struct presto_softc), presto_match, presto_attach
};
struct cfdriver presto_cd = {
NULL, "presto", DV_DULL
};
struct dkdriver presto_dk = {
prestostrategy,
};
int
presto_match(struct device *parent, void *vcf, void *aux)
{
struct confargs *ca = aux;
struct romaux *ra = &ca->ca_ra;
if (strcmp(ra->ra_name, "MMI,prestoserve") != 0)
return (0);
if (ra->ra_len < PSERVE_OFFSET) /* no usable memory ? */
return (0);
return (1);
}
void
presto_attach(struct device *parent, struct device *self, void *args)
{
struct presto_softc *sc = (struct presto_softc *)self;
struct confargs *ca = args;
char *model, *submodel;
u_int8_t status;
/* Get card parameters */
model = getpropstring(ca->ca_ra.ra_node, "model");
if (*model == '\0')
submodel = "fictitious";
else {
submodel = memchr(model, ',', strlen(model));
if (submodel != NULL)
submodel++;
else
submodel = model;
}
strncpy(sc->sc_model, submodel, 16);
sc->sc_memsize = ca->ca_ra.ra_len;
printf(": %s\n%s: %d MB NVRAM, ", model,
sc->sc_dev.dv_xname, sc->sc_memsize >> 20);
/* Map memory */
sc->sc_mem = (void *)mapiodev(ca->ca_ra.ra_reg, 0, sc->sc_memsize);
/*
* Clear the ``disconnect battery'' bit.
*/
*(u_int8_t *)(sc->sc_mem + PSERVE_BATTERYSTATUS) = 0x00;
/*
* Clear the ``unflushed data'' status. This way, if the card is
* reused under SunOS, the system will not try to flush whatever
* data the user put in the nvram...
*/
*(u_int8_t *)(sc->sc_mem + PSERVE_DATASTATUS) = 0x00;
/*
* Decode battery status
*/
status = *(u_int8_t *)(sc->sc_mem + PSERVE_BATTERYSTATUS);
printf("battery status %x ", status);
if (ISSET(status, PSBAT_FAULT)) {
printf("(non-working)");
} else if (ISSET(status, PSBAT_CONNECTED)) {
if (ISSET(status, PSBAT_CHARGING))
printf("(charging)");
else
printf("(ok)");
} else
printf("(disabled)");
printf("\n");
#ifdef DEBUG
printf("%s: status codes %02.2x, %02.2x, %02.2x, %02.2x\n",
sc->sc_dev.dv_xname,
*(u_int8_t *)(sc->sc_mem + 0x03), *(u_int8_t *)(sc->sc_mem + 0x07),
*(u_int8_t *)(sc->sc_mem + 0x0b), *(u_int8_t *)(sc->sc_mem + 0x0f));
#endif
sc->sc_dk.dk_driver = &presto_dk;
sc->sc_dk.dk_name = sc->sc_dev.dv_xname;
disk_attach(&sc->sc_dk);
}
/*
* Block device i/o operations
*/
int
prestodump(dev_t dev, daddr64_t blkno, caddr_t va, size_t size)
{
/*
* A dump to nvram is theoretically possible, but its size is
* very likely to be WAY too small.
*/
return (ENXIO);
}
daddr64_t
prestosize(dev_t dev)
{
struct presto_softc *sc;
int unit, part;
unit = DISKUNIT(dev);
sc = (struct presto_softc *)device_lookup(&presto_cd, unit);
if (sc == NULL)
return (0);
part = DISKPART(dev);
if (part >= sc->sc_dk.dk_label->d_npartitions)
return (0);
else
return (DL_GETPSIZE(&sc->sc_dk.dk_label->d_partitions[part]) *
(sc->sc_dk.dk_label->d_secsize / DEV_BSIZE));
}
int
prestoopen(dev_t dev, int flag, int fmt, struct proc *proc)
{
int unit, part;
struct presto_softc *sc;
unit = DISKUNIT(dev);
sc = (struct presto_softc *)device_lookup(&presto_cd, unit);
if (sc == NULL)
return (ENXIO);
/* read the disk label */
presto_getdisklabel(dev, sc);
/* only allow valid partitions */
part = DISKPART(dev);
if (part != RAW_PART &&
(part >= sc->sc_dk.dk_label->d_npartitions ||
sc->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED))
return (ENXIO);
/* update open masks */
switch (fmt) {
case S_IFCHR:
sc->sc_dk.dk_copenmask |= (1 << part);
break;
case S_IFBLK:
sc->sc_dk.dk_bopenmask |= (1 << part);
break;
}
sc->sc_dk.dk_openmask = sc->sc_dk.dk_copenmask | sc->sc_dk.dk_bopenmask;
return (0);
}
int
prestoclose(dev_t dev, int flag, int fmt, struct proc *proc)
{
int unit, part;
struct presto_softc *sc;
unit = DISKUNIT(dev);
sc = (struct presto_softc *)device_lookup(&presto_cd, unit);
/* update open masks */
part = DISKPART(dev);
switch (fmt) {
case S_IFCHR:
sc->sc_dk.dk_copenmask &= ~(1 << part);
break;
case S_IFBLK:
sc->sc_dk.dk_bopenmask &= ~(1 << part);
break;
}
sc->sc_dk.dk_openmask = sc->sc_dk.dk_copenmask | sc->sc_dk.dk_bopenmask;
return (0);
}
int
prestoread(dev_t dev, struct uio *uio, int flags)
{
return (physio(prestostrategy, NULL, dev, B_READ, minphys, uio));
}
int
prestowrite(dev_t dev, struct uio *uio, int flags)
{
return (physio(prestostrategy, NULL, dev, B_WRITE, minphys, uio));
}
void
prestostrategy(struct buf *bp)
{
int unit, part;
struct presto_softc *sc;
size_t offset, count;
int s;
unit = DISKUNIT(bp->b_dev);
sc = (struct presto_softc *)device_lookup(&presto_cd, unit);
/* Sort rogue requests out */
if (sc == NULL || bp->b_blkno < 0 ||
(bp->b_bcount % sc->sc_dk.dk_label->d_secsize) != 0) {
bp->b_error = EINVAL;
goto bad;
}
/* Do not write on "no trespassing" areas... */
part = DISKPART(bp->b_dev);
if (part != RAW_PART &&
bounds_check_with_label(bp, sc->sc_dk.dk_label, 1) <= 0)
goto bad;
/* Bound the request size, then move data between buf and nvram */
bp->b_resid = bp->b_bcount;
offset = (bp->b_blkno << DEV_BSHIFT) + PSERVE_OFFSET;
count = bp->b_bcount;
if (count > (sc->sc_memsize - offset))
count = (sc->sc_memsize - offset);
if (ISSET(bp->b_flags, B_READ))
bcopy(sc->sc_mem + offset, bp->b_data, count);
else
bcopy(bp->b_data, sc->sc_mem + offset, count);
bp->b_resid -= count;
goto done;
bad:
bp->b_flags |= B_ERROR;
bp->b_resid = bp->b_bcount;
done:
s = splbio();
biodone(bp);
splx(s);
}
int
prestoioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *proc)
{
struct presto_softc *sc;
int unit;
int error;
unit = DISKUNIT(dev);
sc = (struct presto_softc *)device_lookup(&presto_cd, unit);
switch (cmd) {
case DIOCGDINFO:
bcopy(sc->sc_dk.dk_label, data, sizeof(struct disklabel));
return (0);
case DIOCSDINFO:
if ((flag & FWRITE) == 0)
return (EBADF);
error = setdisklabel(sc->sc_dk.dk_label,
(struct disklabel *)data, /*sd->sc_dk.dk_openmask : */0);
return (error);
case DIOCWDINFO:
if ((flag & FWRITE) == 0)
return (EBADF);
error = setdisklabel(sc->sc_dk.dk_label,
(struct disklabel *)data, /*sd->sc_dk.dk_openmask : */0);
if (error == 0) {
error = writedisklabel(DISKLABELDEV(dev),
prestostrategy, sc->sc_dk.dk_label);
}
return (error);
default:
return (EINVAL);
}
}
/*
* Read the disklabel. If none is present, use a fictitious one instead.
*/
void
presto_getdisklabel(dev_t dev, struct presto_softc *sc)
{
struct disklabel *lp = sc->sc_dk.dk_label;
bzero(sc->sc_dk.dk_label, sizeof(struct disklabel));
lp->d_secsize = DEV_BSIZE;
lp->d_ntracks = 1;
lp->d_nsectors = 32;
DL_SETDSIZE(lp, (sc->sc_memsize - PSERVE_OFFSET) >> DEV_BSHIFT);
lp->d_ncylinders = DL_GETDSIZE(lp) / lp->d_nsectors;
lp->d_secpercyl = lp->d_nsectors;
strncpy(lp->d_typename, "Prestoserve", 16);
lp->d_type = DTYPE_SCSI; /* what better to put here? */
strncpy(lp->d_packname, sc->sc_model, 16);
lp->d_rpm = 3600;
lp->d_interleave = 1;
lp->d_version = 1;
lp->d_magic = DISKMAGIC;
lp->d_magic2 = DISKMAGIC;
lp->d_checksum = dkcksum(lp);
readdisklabel(DISKLABELDEV(dev), prestostrategy, sc->sc_dk.dk_label, 0);
}