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/*-
* Copyright (C) 2009-2012 Semihalf
* 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 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 AUTHOR 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.
*/
/* Integrated NAND controller driver */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/rman.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/time.h>
#include <machine/bus.h>
#include <machine/fdt.h>
#include <arm/mv/mvvar.h>
#include <arm/mv/mvwin.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/nand/nand.h>
#include <dev/nand/nandbus.h>
#include "nfc_if.h"
#define MV_NAND_DATA (0x00)
#define MV_NAND_COMMAND (0x01)
#define MV_NAND_ADDRESS (0x02)
struct mv_nand_softc {
struct nand_softc nand_dev;
bus_space_handle_t sc_handle;
bus_space_tag_t sc_tag;
struct resource *res;
int rid;
};
static int mv_nand_attach(device_t);
static int mv_nand_probe(device_t);
static int mv_nand_send_command(device_t, uint8_t);
static int mv_nand_send_address(device_t, uint8_t);
static uint8_t mv_nand_read_byte(device_t);
static void mv_nand_read_buf(device_t, void *, uint32_t);
static void mv_nand_write_buf(device_t, void *, uint32_t);
static int mv_nand_select_cs(device_t, uint8_t);
static int mv_nand_read_rnb(device_t);
static device_method_t mv_nand_methods[] = {
DEVMETHOD(device_probe, mv_nand_probe),
DEVMETHOD(device_attach, mv_nand_attach),
DEVMETHOD(nfc_send_command, mv_nand_send_command),
DEVMETHOD(nfc_send_address, mv_nand_send_address),
DEVMETHOD(nfc_read_byte, mv_nand_read_byte),
DEVMETHOD(nfc_read_buf, mv_nand_read_buf),
DEVMETHOD(nfc_write_buf, mv_nand_write_buf),
DEVMETHOD(nfc_select_cs, mv_nand_select_cs),
DEVMETHOD(nfc_read_rnb, mv_nand_read_rnb),
{ 0, 0 },
};
static driver_t mv_nand_driver = {
"nand",
mv_nand_methods,
sizeof(struct mv_nand_softc),
};
static devclass_t mv_nand_devclass;
DRIVER_MODULE(mv_nand, localbus, mv_nand_driver, mv_nand_devclass, 0, 0);
static int
mv_nand_probe(device_t dev)
{
if (!ofw_bus_is_compatible(dev, "mrvl,nfc"))
return (ENXIO);
device_set_desc(dev, "Marvell NAND controller");
return (BUS_PROBE_DEFAULT);
}
static int
mv_nand_attach(device_t dev)
{
struct mv_nand_softc *sc;
int err;
sc = device_get_softc(dev);
sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->rid,
RF_ACTIVE);
if (sc->res == NULL) {
device_printf(dev, "could not allocate resources!\n");
return (ENXIO);
}
sc->sc_tag = rman_get_bustag(sc->res);
sc->sc_handle = rman_get_bushandle(sc->res);
nand_init(&sc->nand_dev, dev, NAND_ECC_SOFT, 0, 0, NULL, NULL);
err = nandbus_create(dev);
return (err);
}
static int
mv_nand_send_command(device_t dev, uint8_t command)
{
struct mv_nand_softc *sc;
nand_debug(NDBG_DRV,"mv_nand: send command %x", command);
sc = device_get_softc(dev);
bus_space_write_1(sc->sc_tag, sc->sc_handle, MV_NAND_COMMAND, command);
return (0);
}
static int
mv_nand_send_address(device_t dev, uint8_t addr)
{
struct mv_nand_softc *sc;
nand_debug(NDBG_DRV,"mv_nand: send address %x", addr);
sc = device_get_softc(dev);
bus_space_write_1(sc->sc_tag, sc->sc_handle, MV_NAND_ADDRESS, addr);
return (0);
}
static uint8_t
mv_nand_read_byte(device_t dev)
{
struct mv_nand_softc *sc;
uint8_t data;
sc = device_get_softc(dev);
data = bus_space_read_1(sc->sc_tag, sc->sc_handle, MV_NAND_DATA);
nand_debug(NDBG_DRV,"mv_nand: read %x", data);
return (data);
}
static void
mv_nand_read_buf(device_t dev, void* buf, uint32_t len)
{
struct mv_nand_softc *sc;
int i;
uint8_t *b = (uint8_t*)buf;
sc = device_get_softc(dev);
for (i = 0; i < len; i++) {
b[i] = bus_space_read_1(sc->sc_tag, sc->sc_handle,
MV_NAND_DATA);
#ifdef NAND_DEBUG
if (!(i % 16))
printf("%s", i == 0 ? "mv_nand:\n" : "\n");
printf(" %x", b[i]);
if (i == len - 1)
printf("\n");
#endif
}
}
static void
mv_nand_write_buf(device_t dev, void* buf, uint32_t len)
{
struct mv_nand_softc *sc;
int i;
uint8_t *b = (uint8_t*)buf;
sc = device_get_softc(dev);
for (i = 0; i < len; i++) {
#ifdef NAND_DEBUG
if (!(i % 16))
printf("%s", i == 0 ? "mv_nand:\n" : "\n");
printf(" %x", b[i]);
if (i == len - 1)
printf("\n");
#endif
bus_space_write_1(sc->sc_tag, sc->sc_handle, MV_NAND_DATA,
b[i]);
}
}
static int
mv_nand_select_cs(device_t dev, uint8_t cs)
{
if (cs > 0)
return (ENODEV);
return (0);
}
static int
mv_nand_read_rnb(device_t dev)
{
/* no-op */
return (0); /* ready */
}
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