terasic_mtl_nexus.c revision 265999
1/*- 2 * Copyright (c) 2012 Robert N. M. Watson 3 * All rights reserved. 4 * 5 * This software was developed by SRI International and the University of 6 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 7 * ("CTSRD"), as part of the DARPA CRASH research programme. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31#include <sys/cdefs.h> 32__FBSDID("$FreeBSD: stable/10/sys/dev/terasic/mtl/terasic_mtl_nexus.c 265999 2014-05-14 01:35:43Z ian $"); 33 34#include <sys/param.h> 35#include <sys/bus.h> 36#include <sys/condvar.h> 37#include <sys/conf.h> 38#include <sys/consio.h> /* struct vt_mode */ 39#include <sys/fbio.h> /* video_adapter_t */ 40#include <sys/kernel.h> 41#include <sys/lock.h> 42#include <sys/malloc.h> 43#include <sys/module.h> 44#include <sys/mutex.h> 45#include <sys/rman.h> 46#include <sys/systm.h> 47 48#include <machine/bus.h> 49#include <machine/resource.h> 50 51#include <dev/terasic/mtl/terasic_mtl.h> 52 53static int 54terasic_mtl_nexus_probe(device_t dev) 55{ 56 57 device_set_desc(dev, "Terasic Multi-touch LCD (MTL)"); 58 return (BUS_PROBE_NOWILDCARD); 59} 60 61static int 62terasic_mtl_nexus_attach(device_t dev) 63{ 64 struct terasic_mtl_softc *sc; 65 u_long pixel_maddr, text_maddr, reg_maddr; 66 u_long pixel_msize, text_msize, reg_msize; 67 int error; 68 69 sc = device_get_softc(dev); 70 sc->mtl_dev = dev; 71 sc->mtl_unit = device_get_unit(dev); 72 73 /* 74 * Query non-standard hints to find the locations of our two memory 75 * regions. Enforce certain alignment and size requirements. 76 */ 77 if (resource_long_value(device_get_name(dev), device_get_unit(dev), 78 "reg_maddr", ®_maddr) != 0 || (reg_maddr % PAGE_SIZE != 0)) { 79 device_printf(dev, "improper register address"); 80 return (ENXIO); 81 } 82 if (resource_long_value(device_get_name(dev), device_get_unit(dev), 83 "reg_msize", ®_msize) != 0 || (reg_msize % PAGE_SIZE != 0)) { 84 device_printf(dev, "improper register size"); 85 return (ENXIO); 86 } 87 if (resource_long_value(device_get_name(dev), device_get_unit(dev), 88 "pixel_maddr", &pixel_maddr) != 0 || 89 (pixel_maddr % PAGE_SIZE != 0)) { 90 device_printf(dev, "improper pixel frame buffer address"); 91 return (ENXIO); 92 } 93 if (resource_long_value(device_get_name(dev), device_get_unit(dev), 94 "pixel_msize", &pixel_msize) != 0 || 95 (pixel_msize % PAGE_SIZE != 0)) { 96 device_printf(dev, "improper pixel frame buffer size"); 97 return (ENXIO); 98 } 99 if (resource_long_value(device_get_name(dev), device_get_unit(dev), 100 "text_maddr", &text_maddr) != 0 || 101 (text_maddr % PAGE_SIZE != 0)) { 102 device_printf(dev, "improper text frame buffer address"); 103 return (ENXIO); 104 } 105 if (resource_long_value(device_get_name(dev), device_get_unit(dev), 106 "text_msize", &text_msize) != 0 || 107 (text_msize % PAGE_SIZE != 0)) { 108 device_printf(dev, "improper text frame buffer size"); 109 return (ENXIO); 110 } 111 112 /* 113 * Allocate resources. 114 */ 115 sc->mtl_reg_rid = 0; 116 sc->mtl_reg_res = bus_alloc_resource(dev, SYS_RES_MEMORY, 117 &sc->mtl_reg_rid, reg_maddr, reg_maddr + reg_msize - 1, 118 reg_msize, RF_ACTIVE); 119 if (sc->mtl_reg_res == NULL) { 120 device_printf(dev, "couldn't map register memory\n"); 121 error = ENXIO; 122 goto error; 123 } 124 device_printf(sc->mtl_dev, "registers at mem %p-%p\n", 125 (void *)reg_maddr, (void *)(reg_maddr + reg_msize)); 126 sc->mtl_pixel_rid = 0; 127 sc->mtl_pixel_res = bus_alloc_resource(dev, SYS_RES_MEMORY, 128 &sc->mtl_pixel_rid, pixel_maddr, pixel_maddr + pixel_msize - 1, 129 pixel_msize, RF_ACTIVE); 130 if (sc->mtl_pixel_res == NULL) { 131 device_printf(dev, "couldn't map pixel memory\n"); 132 error = ENXIO; 133 goto error; 134 } 135 device_printf(sc->mtl_dev, "pixel frame buffer at mem %p-%p\n", 136 (void *)pixel_maddr, (void *)(pixel_maddr + pixel_msize)); 137 sc->mtl_text_rid = 0; 138 sc->mtl_text_res = bus_alloc_resource(dev, SYS_RES_MEMORY, 139 &sc->mtl_text_rid, text_maddr, text_maddr + text_msize - 1, 140 text_msize, RF_ACTIVE); 141 if (sc->mtl_text_res == NULL) { 142 device_printf(dev, "couldn't map text memory\n"); 143 error = ENXIO; 144 goto error; 145 } 146 device_printf(sc->mtl_dev, "text frame buffer at mem %p-%p\n", 147 (void *)text_maddr, (void *)(text_maddr + text_msize)); 148 error = terasic_mtl_attach(sc); 149 if (error == 0) 150 return (0); 151error: 152 if (sc->mtl_text_res != NULL) 153 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid, 154 sc->mtl_text_res); 155 if (sc->mtl_pixel_res != NULL) 156 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid, 157 sc->mtl_pixel_res); 158 if (sc->mtl_reg_res != NULL) 159 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid, 160 sc->mtl_reg_res); 161 return (error); 162} 163 164static int 165terasic_mtl_nexus_detach(device_t dev) 166{ 167 struct terasic_mtl_softc *sc; 168 169 sc = device_get_softc(dev); 170 terasic_mtl_detach(sc); 171 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid, 172 sc->mtl_text_res); 173 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid, 174 sc->mtl_pixel_res); 175 bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid, 176 sc->mtl_reg_res); 177 return (0); 178} 179 180static device_method_t terasic_mtl_nexus_methods[] = { 181 DEVMETHOD(device_probe, terasic_mtl_nexus_probe), 182 DEVMETHOD(device_attach, terasic_mtl_nexus_attach), 183 DEVMETHOD(device_detach, terasic_mtl_nexus_detach), 184 { 0, 0 } 185}; 186 187static driver_t terasic_mtl_nexus_driver = { 188 "terasic_mtl", 189 terasic_mtl_nexus_methods, 190 sizeof(struct terasic_mtl_softc), 191}; 192 193DRIVER_MODULE(mtl, nexus, terasic_mtl_nexus_driver, terasic_mtl_devclass, 0, 194 0); 195