166 lines
4.5 KiB
C
166 lines
4.5 KiB
C
/* $NetBSD: z3rambd.c,v 1.2 2012/11/26 22:58:24 rkujawa Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2012 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Radoslaw Kujawa.
|
|
*
|
|
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: z3rambd.c,v 1.2 2012/11/26 22:58:24 rkujawa Exp $");
|
|
|
|
/*
|
|
* Z3 RAM virtual block device. Supports ZorRAM, BigRamPlus and FastLane Z3 so
|
|
* far.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/device.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <machine/cpu.h>
|
|
|
|
#include <amiga/dev/zbusvar.h>
|
|
#include <amiga/dev/z3rambdvar.h>
|
|
|
|
#include <dev/altmem/altmemvar.h>
|
|
|
|
static int z3rambd_match(device_t, cfdata_t , void *);
|
|
static void z3rambd_attach(device_t, device_t, void *);
|
|
|
|
static int z3rambd_altmem_print(void *, const char *);
|
|
|
|
static void z3rambd_altmem_strategy(void *, struct buf *);
|
|
static size_t z3rambd_altmem_getsize(void *);
|
|
|
|
static const struct altmem_memops z3rambd_altmem_memops = {
|
|
.getsize = z3rambd_altmem_getsize,
|
|
.strategy = z3rambd_altmem_strategy
|
|
};
|
|
|
|
CFATTACH_DECL_NEW(z3rambd, sizeof(struct z3rambd_softc),
|
|
z3rambd_match, z3rambd_attach, NULL, NULL);
|
|
|
|
int
|
|
z3rambd_match(device_t parent, cfdata_t cf, void *aux)
|
|
{
|
|
struct zbus_args *zap;
|
|
zap = aux;
|
|
|
|
if (z3rambd_match_id(zap->manid, zap->prodid) > 0)
|
|
return 100;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
z3rambd_attach(device_t parent, device_t self, void *aux)
|
|
{
|
|
struct z3rambd_softc *sc;
|
|
struct zbus_args *zap;
|
|
struct altmem_attach_args aaa;
|
|
|
|
sc = device_private(self);
|
|
sc->sc_dev = self;
|
|
zap = aux;
|
|
|
|
sc->sc_bst.base = (bus_addr_t)zap->va;
|
|
sc->sc_bst.absm = &amiga_bus_stride_1;
|
|
sc->sc_iot = &sc->sc_bst;
|
|
|
|
/* XXX: duh, size of the board does not necessarily equal mem size */
|
|
sc->sc_size = zap->size;
|
|
|
|
if (zap->prodid == ZORRO_PRODID_ZORRAM)
|
|
aprint_normal(": AmigaKit ZorRAM / Individual Computers BigRamPlus\n");
|
|
else if (zap->prodid == ZORRO_PRODID_3128)
|
|
aprint_normal(": DKB 3128\n");
|
|
else if (zap->prodid == ZORRO_PRODID_FLZ3MEM)
|
|
aprint_normal(": FastLane Z3 memory\n");
|
|
else
|
|
aprint_normal("\n");
|
|
|
|
if (bus_space_map(sc->sc_iot, 0, sc->sc_size, 0,
|
|
&sc->sc_ioh)) {
|
|
aprint_error_dev(sc->sc_dev, "can't map the RAM\n");
|
|
}
|
|
|
|
sc->sc_va = bus_space_vaddr(sc->sc_iot, sc->sc_ioh);
|
|
|
|
aaa.cookie = sc;
|
|
aaa.memops = &z3rambd_altmem_memops;
|
|
config_found_ia(self, "altmemdev", &aaa, z3rambd_altmem_print);
|
|
}
|
|
|
|
static int
|
|
z3rambd_altmem_print(void *aux, const char *pnp)
|
|
{
|
|
if (pnp)
|
|
aprint_normal("altmem at %s", pnp);
|
|
|
|
return UNCONF;
|
|
}
|
|
|
|
/* XXX: should be rewritten using bus_space_read_region? */
|
|
static void
|
|
z3rambd_altmem_strategy(void *aux, struct buf *bp)
|
|
{
|
|
struct z3rambd_softc *sc = aux;
|
|
void *addr;
|
|
size_t off, bpos;
|
|
int s;
|
|
|
|
bpos = 0;
|
|
|
|
bp->b_resid = bp->b_bcount;
|
|
off = bp->b_blkno << DEV_BSHIFT;
|
|
|
|
s = splbio();
|
|
|
|
addr = (char *)((char*)sc->sc_va + off);
|
|
#ifdef Z3RAMBD_DEBUG
|
|
aprint_normal_dev(sc->sc_dev,"stratetgy at %x %x\n", (bus_addr_t) addr,
|
|
(bus_addr_t) kvtop(addr));
|
|
#endif /* Z3RAMBD_DEBUG */
|
|
|
|
if (bp->b_flags & B_READ)
|
|
memcpy((char *)bp->b_data, addr, bp->b_resid);
|
|
else
|
|
memcpy(addr, (char *)bp->b_data, bp->b_resid);
|
|
|
|
splx(s);
|
|
}
|
|
|
|
static size_t
|
|
z3rambd_altmem_getsize(void *aux)
|
|
{
|
|
struct z3rambd_softc *sc = aux;
|
|
return sc->sc_size;
|
|
}
|
|
|