286 lines
6.3 KiB
C
286 lines
6.3 KiB
C
/* $NetBSD: xp.c,v 1.6 2020/12/29 17:17:14 tsutsui Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2016 Izumi Tsutsui. 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.
|
|
*/
|
|
|
|
/*
|
|
* LUNA's Hitachi HD647180 "XP" I/O processor driver
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: xp.c,v 1.6 2020/12/29 17:17:14 tsutsui Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/device.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/kmem.h>
|
|
#include <sys/errno.h>
|
|
|
|
#include <uvm/uvm_extern.h>
|
|
|
|
#include <machine/autoconf.h>
|
|
#include <machine/board.h>
|
|
#include <machine/xpio.h>
|
|
|
|
#include "ioconf.h"
|
|
|
|
#define TRI_PORT_RAM_XP_OFFSET 0x00000
|
|
|
|
#define XP_SHM_BASE (TRI_PORT_RAM + TRI_PORT_RAM_XP_OFFSET)
|
|
#define XP_SHM_SIZE 0x00010000 /* 64KB for XP; rest 64KB for lance */
|
|
#define XP_TAS_ADDR OBIO_TAS
|
|
|
|
struct xp_softc {
|
|
device_t sc_dev;
|
|
|
|
vaddr_t sc_shm_base;
|
|
vsize_t sc_shm_size;
|
|
vaddr_t sc_tas;
|
|
|
|
bool sc_isopen;
|
|
};
|
|
|
|
static int xp_match(device_t, cfdata_t, void *);
|
|
static void xp_attach(device_t, device_t, void *);
|
|
|
|
static dev_type_open(xp_open);
|
|
static dev_type_close(xp_close);
|
|
static dev_type_read(xp_read);
|
|
static dev_type_write(xp_write);
|
|
static dev_type_ioctl(xp_ioctl);
|
|
static dev_type_mmap(xp_mmap);
|
|
|
|
const struct cdevsw xp_cdevsw = {
|
|
.d_open = xp_open,
|
|
.d_close = xp_close,
|
|
.d_read = xp_read,
|
|
.d_write = xp_write,
|
|
.d_ioctl = xp_ioctl,
|
|
.d_stop = nostop,
|
|
.d_tty = notty,
|
|
.d_poll = nopoll,
|
|
.d_mmap = xp_mmap,
|
|
.d_kqfilter = nokqfilter,
|
|
.d_discard = nodiscard,
|
|
.d_flag = 0
|
|
};
|
|
|
|
CFATTACH_DECL_NEW(xp, sizeof(struct xp_softc),
|
|
xp_match, xp_attach, NULL, NULL);
|
|
|
|
/* #define XP_DEBUG */
|
|
|
|
#ifdef XP_DEBUG
|
|
#define XP_DEBUG_ALL 0xff
|
|
uint32_t xp_debug = 0;
|
|
#define DPRINTF(x, y) if (xp_debug & (x)) printf y
|
|
#else
|
|
#define DPRINTF(x, y) /* nothing */
|
|
#endif
|
|
|
|
static bool xp_matched;
|
|
|
|
/*
|
|
* PIO 0 port C is connected to XP's reset line
|
|
*
|
|
* XXX: PIO port functions should be shared with machdep.c for DIP SWs
|
|
*/
|
|
#define PIO_ADDR OBIO_PIO0_BASE
|
|
#define PORT_A 0
|
|
#define PORT_B 1
|
|
#define PORT_C 2
|
|
#define CTRL 3
|
|
|
|
/* PIO0 Port C bit definition */
|
|
#define XP_INT1_REQ 0 /* INTR B */
|
|
/* unused */ /* IBF B */
|
|
#define XP_INT1_ENA 2 /* INTE B */
|
|
#define XP_INT5_REQ 3 /* INTR A */
|
|
#define XP_INT5_ENA 4 /* INTE A */
|
|
/* unused */ /* IBF A */
|
|
#define PARITY 6 /* PC6 output to enable parity error */
|
|
#define XP_RESET 7 /* PC7 output to reset HD647180 XP */
|
|
|
|
/* Port control for PC6 and PC7 */
|
|
#define ON 1
|
|
#define OFF 0
|
|
|
|
static uint8_t put_pio0c(uint8_t bit, uint8_t set)
|
|
{
|
|
volatile uint8_t * const pio0 = (uint8_t *)PIO_ADDR;
|
|
|
|
pio0[CTRL] = (bit << 1) | (set & 0x01);
|
|
|
|
return pio0[PORT_C];
|
|
}
|
|
|
|
static int
|
|
xp_match(device_t parent, cfdata_t cf, void *aux)
|
|
{
|
|
struct mainbus_attach_args *maa = aux;
|
|
|
|
/* only one XP processor */
|
|
if (xp_matched)
|
|
return 0;
|
|
|
|
if (strcmp(maa->ma_name, xp_cd.cd_name))
|
|
return 0;
|
|
|
|
if (maa->ma_addr != XP_SHM_BASE)
|
|
return 0;
|
|
|
|
xp_matched = true;
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
xp_attach(device_t parent, device_t self, void *aux)
|
|
{
|
|
struct xp_softc *sc = device_private(self);
|
|
|
|
sc->sc_dev = self;
|
|
|
|
aprint_normal(": HD647180X I/O processor\n");
|
|
|
|
sc->sc_shm_base = XP_SHM_BASE;
|
|
sc->sc_shm_size = XP_SHM_SIZE;
|
|
sc->sc_tas = XP_TAS_ADDR;
|
|
}
|
|
|
|
static int
|
|
xp_open(dev_t dev, int flags, int devtype, struct lwp *l)
|
|
{
|
|
struct xp_softc *sc;
|
|
int unit;
|
|
|
|
DPRINTF(XP_DEBUG_ALL, ("%s\n", __func__));
|
|
|
|
unit = minor(dev);
|
|
sc = device_lookup_private(&xp_cd, unit);
|
|
if (sc == NULL)
|
|
return ENXIO;
|
|
if (sc->sc_isopen)
|
|
return EBUSY;
|
|
|
|
sc->sc_isopen = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
xp_close(dev_t dev, int flags, int mode, struct lwp *l)
|
|
{
|
|
struct xp_softc *sc;
|
|
int unit;
|
|
|
|
DPRINTF(XP_DEBUG_ALL, ("%s\n", __func__));
|
|
|
|
unit = minor(dev);
|
|
sc = device_lookup_private(&xp_cd, unit);
|
|
sc->sc_isopen = false;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
xp_ioctl(dev_t dev, u_long cmd, void *addr, int flags, struct lwp *l)
|
|
{
|
|
struct xp_softc *sc;
|
|
int unit, error;
|
|
struct xp_download *downld;
|
|
uint8_t *loadbuf;
|
|
size_t loadsize;
|
|
|
|
DPRINTF(XP_DEBUG_ALL, ("%s\n", __func__));
|
|
|
|
unit = minor(dev);
|
|
sc = device_lookup_private(&xp_cd, unit);
|
|
|
|
switch (cmd) {
|
|
case XPIOCDOWNLD:
|
|
downld = addr;
|
|
loadsize = downld->size;
|
|
if (loadsize == 0 || loadsize > sc->sc_shm_size) {
|
|
return EINVAL;
|
|
}
|
|
|
|
loadbuf = kmem_alloc(loadsize, KM_SLEEP);
|
|
error = copyin(downld->data, loadbuf, loadsize);
|
|
if (error == 0) {
|
|
put_pio0c(XP_RESET, ON);
|
|
delay(100);
|
|
memcpy((void *)sc->sc_shm_base, loadbuf, loadsize);
|
|
delay(100);
|
|
put_pio0c(XP_RESET, OFF);
|
|
} else {
|
|
DPRINTF(XP_DEBUG_ALL, ("%s: ioctl failed (err = %d)\n",
|
|
__func__, error));
|
|
}
|
|
|
|
kmem_free(loadbuf, loadsize);
|
|
return error;
|
|
|
|
default:
|
|
return ENOTTY;
|
|
}
|
|
|
|
panic("%s: cmd (%ld) is not handled", device_xname(sc->sc_dev), cmd);
|
|
}
|
|
|
|
static paddr_t
|
|
xp_mmap(dev_t dev, off_t offset, int prot)
|
|
{
|
|
struct xp_softc *sc;
|
|
int unit;
|
|
paddr_t pa;
|
|
|
|
pa = -1;
|
|
|
|
unit = minor(dev);
|
|
sc = device_lookup_private(&xp_cd, unit);
|
|
|
|
if (offset >= 0 &&
|
|
offset < sc->sc_shm_size) {
|
|
pa = m68k_btop(m68k_trunc_page(sc->sc_shm_base) + offset);
|
|
}
|
|
|
|
return pa;
|
|
}
|
|
|
|
static int
|
|
xp_read(dev_t dev, struct uio *uio, int flags)
|
|
{
|
|
|
|
return ENODEV;
|
|
}
|
|
|
|
static int
|
|
xp_write(dev_t dev, struct uio *uio, int flags)
|
|
{
|
|
|
|
return ENODEV;
|
|
}
|