1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2012 Robert N. M. Watson 5 * All rights reserved. 6 * 7 * This software was developed by SRI International and the University of 8 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 9 * ("CTSRD"), as part of the DARPA CRASH research programme. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD$"); 35 36#include <sys/param.h> 37#include <sys/bus.h> 38#include <sys/condvar.h> 39#include <sys/conf.h> 40#include <sys/consio.h> /* struct vt_mode */ 41#include <sys/fbio.h> /* video_adapter_t */ 42#include <sys/kernel.h> 43#include <sys/lock.h> 44#include <sys/malloc.h> 45#include <sys/module.h> 46#include <sys/mutex.h> 47#include <sys/rman.h> 48#include <sys/systm.h> 49 50#include <machine/bus.h> 51#include <machine/resource.h> 52 53#include <dev/terasic/mtl/terasic_mtl.h> 54 55#include "fb_if.h" 56 57static int 58terasic_mtl_nexus_probe(device_t dev) 59{ 60 61 device_set_desc(dev, "Terasic Multi-touch LCD (MTL)"); 62 return (BUS_PROBE_NOWILDCARD); 63} 64 65static int 66terasic_mtl_nexus_attach(device_t dev) 67{ 68 struct terasic_mtl_softc *sc; 69 u_long pixel_maddr, text_maddr, reg_maddr; 70 u_long pixel_msize, text_msize, reg_msize; 71 int error; 72 73 sc = device_get_softc(dev); 74 sc->mtl_dev = dev; 75 sc->mtl_unit = device_get_unit(dev); 76 77 /* 78 * Query non-standard hints to find the locations of our two memory 79 * regions. Enforce certain alignment and size requirements. 80 */ 81 if (resource_long_value(device_get_name(dev), device_get_unit(dev), 82 "reg_maddr", ®_maddr) != 0 || (reg_maddr % PAGE_SIZE != 0)) { 83 device_printf(dev, "improper register address\n"); 84 return (ENXIO); 85 } 86 if (resource_long_value(device_get_name(dev), device_get_unit(dev), 87 "reg_msize", ®_msize) != 0 || (reg_msize % PAGE_SIZE != 0)) { 88 device_printf(dev, "improper register size\n"); 89 return (ENXIO); 90 } 91 if (resource_long_value(device_get_name(dev), device_get_unit(dev), 92 "pixel_maddr", &pixel_maddr) != 0 || 93 (pixel_maddr % PAGE_SIZE != 0)) { 94 device_printf(dev, "improper pixel frame buffer address\n"); 95 return (ENXIO); 96 } 97 if (resource_long_value(device_get_name(dev), device_get_unit(dev), 98 "pixel_msize", &pixel_msize) != 0 || 99 (pixel_msize % PAGE_SIZE != 0)) { 100 device_printf(dev, "improper pixel frame buffer size\n"); 101 return (ENXIO); 102 } 103 if (resource_long_value(device_get_name(dev), device_get_unit(dev), 104 "text_maddr", &text_maddr) != 0 || 105 (text_maddr % PAGE_SIZE != 0)) { 106 device_printf(dev, "improper text frame buffer address\n"); 107 return (ENXIO); 108 } 109 if (resource_long_value(device_get_name(dev), device_get_unit(dev), 110 "text_msize", &text_msize) != 0 || 111 (text_msize % PAGE_SIZE != 0)) { 112 device_printf(dev, "improper text frame buffer size\n"); 113 return (ENXIO); 114 } 115 116 /* 117 * Allocate resources. 118 */ 119 sc->mtl_reg_rid = 0; 120 sc->mtl_reg_res = bus_alloc_resource(dev, SYS_RES_MEMORY, 121 &sc->mtl_reg_rid, reg_maddr, reg_maddr + reg_msize - 1, 122 reg_msize, RF_ACTIVE); 123 if (sc->mtl_reg_res == NULL) { 124 device_printf(dev, "couldn't map register memory\n"); 125 error = ENXIO; 126 goto error; 127 } 128 device_printf(sc->mtl_dev, "registers at mem %p-%p\n", 129 (void *)reg_maddr, (void *)(reg_maddr + reg_msize)); 130 sc->mtl_pixel_rid = 0; 131 sc->mtl_pixel_res = bus_alloc_resource(dev, SYS_RES_MEMORY, 132 &sc->mtl_pixel_rid, pixel_maddr, pixel_maddr + pixel_msize - 1, 133 pixel_msize, RF_ACTIVE); 134 if (sc->mtl_pixel_res == NULL) { 135 device_printf(dev, "couldn't map pixel memory\n"); 136 error = ENXIO; 137 goto error; 138 } 139 device_printf(sc->mtl_dev, "pixel frame buffer at mem %p-%p\n", 140 (void *)pixel_maddr, (void *)(pixel_maddr + pixel_msize)); 141 sc->mtl_text_rid = 0; 142 sc->mtl_text_res = bus_alloc_resource(dev, SYS_RES_MEMORY, 143 &sc->mtl_text_rid, text_maddr, text_maddr + text_msize - 1, 144 text_msize, RF_ACTIVE); 145 if (sc->mtl_text_res == NULL) { 146 device_printf(dev, "couldn't map text memory\n"); 147 error = ENXIO; 148 goto error; 149 } 150 device_printf(sc->mtl_dev, "text frame buffer at mem %p-%p\n", 151 (void *)text_maddr, (void *)(text_maddr + text_msize)); 152 error = terasic_mtl_attach(sc); 153 if (error == 0) 154 return (0); 155error: 156 if (sc->mtl_text_res != NULL) 157 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid, 158 sc->mtl_text_res); 159 if (sc->mtl_pixel_res != NULL) 160 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid, 161 sc->mtl_pixel_res); 162 if (sc->mtl_reg_res != NULL) 163 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid, 164 sc->mtl_reg_res); 165 return (error); 166} 167 168static int 169terasic_mtl_nexus_detach(device_t dev) 170{ 171 struct terasic_mtl_softc *sc; 172 173 sc = device_get_softc(dev); 174 terasic_mtl_detach(sc); 175 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid, 176 sc->mtl_text_res); 177 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid, 178 sc->mtl_pixel_res); 179 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid, 180 sc->mtl_reg_res); 181 return (0); 182} 183 184static struct fb_info * 185terasic_mtl_fb_getinfo(device_t dev) 186{ 187 struct terasic_mtl_softc *sc; 188 189 sc = device_get_softc(dev); 190 return (&sc->mtl_fb_info); 191} 192 193static device_method_t terasic_mtl_nexus_methods[] = { 194 DEVMETHOD(device_probe, terasic_mtl_nexus_probe), 195 DEVMETHOD(device_attach, terasic_mtl_nexus_attach), 196 DEVMETHOD(device_detach, terasic_mtl_nexus_detach), 197 DEVMETHOD(fb_getinfo, terasic_mtl_fb_getinfo), 198 { 0, 0 } 199}; 200 201static driver_t terasic_mtl_nexus_driver = { 202 "terasic_mtl", 203 terasic_mtl_nexus_methods, 204 sizeof(struct terasic_mtl_softc), 205}; 206 207DRIVER_MODULE(mtl, nexus, terasic_mtl_nexus_driver, terasic_mtl_devclass, 0, 208 0); 209