pcii.c revision 141423
1/*- 2 * Copyright (c) 2005 Poul-Henning Kamp <phk@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 * Driver for GPIB cards based on NEC �PD7210 and compatibles. 27 * 28 * This driver just hooks up to the hardware and leaves all the interesting 29 * stuff to upd7210.c. 30 * 31 * Supported hardware: 32 * PCIIA compatible cards. 33 * 34 * Tested and known working: 35 * "B&C Microsystems PC488A-0" 36 * 37 */ 38 39#include <sys/cdefs.h> 40__FBSDID("$FreeBSD: head/sys/dev/ieee488/pcii.c 141423 2005-02-06 22:45:12Z phk $"); 41 42#include <sys/param.h> 43#include <sys/systm.h> 44#include <sys/lock.h> 45#include <sys/mutex.h> 46#include <sys/kernel.h> 47#include <sys/module.h> 48#include <sys/bus.h> 49#include <machine/bus.h> 50#include <machine/resource.h> 51#include <sys/rman.h> 52#include <isa/isavar.h> 53 54#include <dev/ieee488/upd7210.h> 55 56struct pcii_softc { 57 int foo; 58 struct resource *port[8]; 59 struct resource *irq; 60 struct resource *dma; 61 void *intr_handler; 62 struct upd7210 upd7210; 63}; 64 65static devclass_t pcii_devclass; 66 67static int pcii_probe(device_t dev); 68static int pcii_attach(device_t dev); 69 70static device_method_t pcii_methods[] = { 71 DEVMETHOD(device_probe, pcii_probe), 72 DEVMETHOD(device_attach, pcii_attach), 73 DEVMETHOD(device_suspend, bus_generic_suspend), 74 DEVMETHOD(device_resume, bus_generic_resume), 75 76 { 0, 0 } 77}; 78 79static driver_t pcii_driver = { 80 "pcii", 81 pcii_methods, 82 sizeof(struct pcii_softc), 83}; 84 85static int 86pcii_probe(device_t dev) 87{ 88 struct resource *port; 89 int rid; 90 u_long start, count; 91 int i, j, error = 0; 92 93 device_set_desc(dev, "PCII IEEE-4888 controller"); 94 95 rid = 0; 96 if (bus_get_resource(dev, SYS_RES_IOPORT, rid, &start, &count) != 0) 97 return ENXIO; 98 if ((start & 0x3ff) != 0x2e1) 99 return (ENXIO); 100 count = 1; 101 if (bus_set_resource(dev, SYS_RES_IOPORT, rid, start, count) != 0) 102 return ENXIO; 103 for (i = 0; i < 8; i++) { 104 j = bus_set_resource(dev, SYS_RES_IOPORT, i, 105 start + 0x400 * i, 1); 106 if (j) { 107 error = ENXIO; 108 break; 109 } 110 rid = i; 111 port = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 112 &rid, RF_ACTIVE); 113 if (port == NULL) 114 return (ENXIO); 115 else 116 bus_release_resource(dev, SYS_RES_IOPORT, i, port); 117 } 118 119 rid = 0; 120 port = bus_alloc_resource_any(dev, 121 SYS_RES_IRQ, &rid, RF_SHAREABLE | RF_ACTIVE); 122 if (port == NULL) 123 return (ENXIO); 124 bus_release_resource(dev, SYS_RES_IRQ, rid, port); 125 126 return (error); 127} 128 129static int 130pcii_attach(device_t dev) 131{ 132 struct pcii_softc *sc; 133 int unit; 134 int rid; 135 int i, error = 0; 136 137 unit = device_get_unit(dev); 138 sc = device_get_softc(dev); 139 memset(sc, 0, sizeof *sc); 140 141 device_set_desc(dev, "PCII IEEE-4888 controller"); 142 143 for (rid = 0; rid < 8; rid++) { 144 sc->port[rid] = bus_alloc_resource_any(dev, 145 SYS_RES_IOPORT, &rid, RF_ACTIVE); 146 if (sc->port[rid] == NULL) { 147 error = ENXIO; 148 break; 149 } 150 sc->upd7210.reg_tag[rid] = rman_get_bustag(sc->port[rid]); 151 sc->upd7210.reg_handle[rid] = rman_get_bushandle(sc->port[rid]); 152 } 153 if (!error) { 154 rid = 0; 155 sc->irq = bus_alloc_resource_any(dev, 156 SYS_RES_IRQ, &rid, RF_SHAREABLE | RF_ACTIVE); 157 if (sc->irq == NULL) { 158 error = ENXIO; 159 } else { 160 error = bus_setup_intr(dev, sc->irq, 161 INTR_TYPE_MISC | INTR_MPSAFE, 162 upd7210intr, &sc->upd7210, &sc->intr_handler); 163 } 164 } 165 if (!error) { 166 rid = 0; 167 sc->dma = bus_alloc_resource_any(dev, 168 SYS_RES_DRQ, &rid, RF_ACTIVE | RF_SHAREABLE); 169 if (sc->dma == NULL) 170 sc->upd7210.dmachan = -1; 171 else 172 sc->upd7210.dmachan = rman_get_start(sc->dma); 173 } 174 if (error) { 175 for (i = 0; i < 8; i++) { 176 if (sc->port[i] == NULL) 177 break; 178 bus_release_resource(dev, SYS_RES_IOPORT, 179 0, sc->port[i]); 180 } 181 if (sc->intr_handler != NULL) 182 bus_teardown_intr(dev, sc->irq, sc->intr_handler); 183 if (sc->irq != NULL) 184 bus_release_resource(dev, SYS_RES_IRQ, i, sc->irq); 185 } 186 upd7210attach(&sc->upd7210); 187 return (error); 188} 189 190DRIVER_MODULE(pcii, isa, pcii_driver, pcii_devclass, 0, 0); 191DRIVER_MODULE(pcii, acpi, pcii_driver, pcii_devclass, 0, 0); 192