aboutsummaryrefslogtreecommitdiff
path: root/sys/dev/nand/nfc_mv.c
blob: 0d78d34d9912cb51b13c4ed037adf0274aff4b29 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * 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 */
}