1/*- 2 * Copyright 2015 Alexander Kabaev <kan@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27/* 28 * Ingenic JZ4780 NAND and External Memory Controller (NEMC) driver. 29 * 30 */ 31 32#include <sys/cdefs.h> 33__FBSDID("$FreeBSD$"); 34 35#include <sys/param.h> 36#include <sys/systm.h> 37#include <sys/conf.h> 38#include <sys/bus.h> 39#include <sys/kernel.h> 40#include <sys/module.h> 41#include <sys/lock.h> 42#include <sys/mutex.h> 43#include <sys/resource.h> 44#include <sys/rman.h> 45 46#include <machine/bus.h> 47 48#include <dev/fdt/fdt_common.h> 49#include <dev/ofw/ofw_bus.h> 50#include <dev/ofw/ofw_bus_subr.h> 51 52struct jz4780_nand_softc { 53 device_t dev; 54 struct resource *res[1]; 55}; 56 57static struct resource_spec jz4780_nand_spec[] = { 58 { SYS_RES_MEMORY, 0, RF_ACTIVE }, 59 { -1, 0 } 60}; 61 62static int jz4780_nand_probe(device_t dev); 63static int jz4780_nand_attach(device_t dev); 64static int jz4780_nand_detach(device_t dev); 65 66static int 67jz4780_nand_probe(device_t dev) 68{ 69 70 if (!ofw_bus_status_okay(dev)) 71 return (ENXIO); 72 73 if (!ofw_bus_is_compatible(dev, "ingenic,jz4780-nand")) 74 return (ENXIO); 75 76 device_set_desc(dev, "Ingenic JZ4780 NAND Controller"); 77 78 return (BUS_PROBE_DEFAULT); 79} 80 81static int 82jz4780_nand_attach(device_t dev) 83{ 84 struct jz4780_nand_softc *sc = device_get_softc(dev); 85 86 sc->dev = dev; 87 88 if (bus_alloc_resources(dev, jz4780_nand_spec, sc->res)) { 89 device_printf(dev, "could not allocate resources for device\n"); 90 return (ENXIO); 91 } 92 93 return (0); 94} 95 96static int 97jz4780_nand_detach(device_t dev) 98{ 99 struct jz4780_nand_softc *sc = device_get_softc(dev); 100 101 bus_release_resources(dev, jz4780_nand_spec, sc->res); 102 return (0); 103} 104 105static device_method_t jz4780_nand_methods[] = { 106 /* Device interface */ 107 DEVMETHOD(device_probe, jz4780_nand_probe), 108 DEVMETHOD(device_attach, jz4780_nand_attach), 109 DEVMETHOD(device_detach, jz4780_nand_detach), 110 111 DEVMETHOD_END 112}; 113 114static driver_t jz4780_nand_driver = { 115 "nand", 116 jz4780_nand_methods, 117 sizeof(struct jz4780_nand_softc), 118}; 119 120static devclass_t jz4780_nand_devclass; 121 122DRIVER_MODULE(jz4780_nand, simplebus, jz4780_nand_driver, 123 jz4780_nand_devclass, 0, 0); 124