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/* $NetBSD: z3rambd.c,v 1.5 2021/08/07 16:18:42 thorpej 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 1.5 2021/08/07 16:18:42 thorpej 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(self, &aaa, z3rambd_altmem_print, CFARGS_NONE);
}
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;
int s;
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;
}
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