1/*- 2 * Copyright (c) 2014 Warner Losh. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 26#include "opt_platform.h" 27 28#include <sys/cdefs.h> 29__FBSDID("$FreeBSD: releng/10.2/sys/arm/at91/at91_sdramc.c 266217 2014-05-16 12:43:45Z ian $"); 30 31#include <sys/param.h> 32#include <sys/bus.h> 33#include <sys/kernel.h> 34#include <sys/module.h> 35#include <sys/resource.h> 36#include <sys/systm.h> 37#include <sys/rman.h> 38 39#include <machine/bus.h> 40 41#include <arm/at91/at91var.h> 42#include <arm/at91/at91_aicreg.h> 43 44#ifdef FDT 45#include <dev/fdt/fdt_common.h> 46#include <dev/ofw/ofw_bus.h> 47#include <dev/ofw/ofw_bus_subr.h> 48#endif 49 50struct sdramc_softc { 51 struct resource *mem_res; /* Memory resource */ 52 device_t sc_dev; 53}; 54 55static int 56at91_sdramc_probe(device_t dev) 57{ 58#ifdef FDT 59 if (!ofw_bus_is_compatible(dev, "atmel,at91sam9260-sdramc")) 60 return (ENXIO); 61#endif 62 device_set_desc(dev, "SDRAMC"); 63 return (0); 64} 65 66static int 67at91_sdramc_attach(device_t dev) 68{ 69 int rid, err = 0; 70 struct sdramc_softc *sc; 71 72 sc = device_get_softc(dev); 73 sc->sc_dev = dev; 74 75 rid = 0; 76 sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 77 RF_ACTIVE); 78 79 if (sc->mem_res == NULL) 80 panic("couldn't allocate register resources"); 81 82 return (err); 83} 84 85static device_method_t at91_sdramc_methods[] = { 86 DEVMETHOD(device_probe, at91_sdramc_probe), 87 DEVMETHOD(device_attach, at91_sdramc_attach), 88 DEVMETHOD_END 89}; 90 91static driver_t at91_sdramc_driver = { 92 "at91_sdramc", 93 at91_sdramc_methods, 94 sizeof(struct sdramc_softc), 95}; 96 97static devclass_t at91_sdramc_devclass; 98 99#ifdef FDT 100DRIVER_MODULE(at91_sdramc, simplebus, at91_sdramc_driver, at91_sdramc_devclass, NULL, 101 NULL); 102#else 103DRIVER_MODULE(at91_sdramc, atmelarm, at91_sdramc_driver, at91_sdramc_devclass, NULL, 104 NULL); 105#endif 106