1/*- 2 * Copyright (c) 2000 Matthew N. Dodd <winter@jurai.net> 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#include <sys/cdefs.h> 29__FBSDID("$FreeBSD$"); 30 31#include <sys/param.h> 32#include <sys/systm.h> 33#include <sys/kernel.h> 34#include <sys/lock.h> 35#include <sys/module.h> 36#include <sys/mutex.h> 37#include <sys/bus.h> 38 39#include <machine/bus.h> 40#include <machine/resource.h> 41#include <sys/rman.h> 42 43#include <isa/isavar.h> 44 45#include <cam/scsi/scsi_all.h> 46 47#include <dev/dpt/dpt.h> 48 49#ifdef notyet 50static void dpt_isa_identify (driver_t *, device_t); 51#endif 52static int dpt_isa_probe (device_t); 53static int dpt_isa_attach (device_t); 54static int dpt_isa_detach (device_t); 55 56static int dpt_isa_valid_irq (int); 57static int dpt_isa_valid_ioport (int); 58 59static int 60dpt_isa_valid_irq (int irq) 61{ 62 switch (irq) { 63 case 11: 64 case 12: 65 case 14: 66 case 15: 67 return (0); 68 default: 69 return (1); 70 }; 71 return (1); 72} 73 74static int 75dpt_isa_valid_ioport (int ioport) 76{ 77 switch (ioport) { 78 case 0x170: 79 case 0x1f0: 80 case 0x230: 81 case 0x330: 82 return (0); 83 default: 84 return (1); 85 }; 86 return (1); 87} 88 89#ifdef notyet 90static void 91dpt_isa_identify (driver_t *driver, device_t parent) 92{ 93 device_t child; 94 dpt_conf_t * conf; 95 int isa_bases[] = { 0x1f0, 0x170, 0x330, 0x230, 0 }; 96 int i; 97 98 for (i = 0; isa_bases[i]; i++) { 99 conf = dpt_pio_get_conf(isa_bases[i]); 100 if (!conf) { 101 if (bootverbose) 102 device_printf(parent, "dpt: dpt_pio_get_conf(%x) failed.\n", 103 isa_bases[i]); 104 continue; 105 } 106 107 child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "dpt", -1); 108 if (child == 0) { 109 device_printf(parent, "dpt: BUS_ADD_CHILD() failed!\n"); 110 continue; 111 } 112 device_set_driver(child, driver); 113 bus_set_resource(child, SYS_RES_IOPORT, 0, isa_bases[i], 0x9); 114 } 115 return; 116} 117#endif 118 119static int 120dpt_isa_probe (device_t dev) 121{ 122 dpt_conf_t * conf; 123 u_int32_t io_base; 124 125 /* No pnp support */ 126 if (isa_get_vendorid(dev)) 127 return (ENXIO); 128 129 if ((io_base = bus_get_resource_start(dev, SYS_RES_IOPORT, 0)) == 0) 130 return (ENXIO); 131 132 if (dpt_isa_valid_ioport(io_base)) 133 ; 134 135 conf = dpt_pio_get_conf(io_base); 136 if (!conf) { 137 printf("dpt: dpt_pio_get_conf() failed.\n"); 138 return (ENXIO); 139 } 140 141 if (dpt_isa_valid_irq(conf->IRQ)) 142 ; 143 144 device_set_desc(dev, "ISA DPT SCSI controller"); 145 bus_set_resource(dev, SYS_RES_IRQ, 0, conf->IRQ, 1); 146 bus_set_resource(dev, SYS_RES_DRQ, 0, ((8 - conf->DMA_channel) & 7), 1); 147 148 return 0; 149} 150 151static int 152dpt_isa_attach (device_t dev) 153{ 154 dpt_softc_t * dpt; 155 int error = 0; 156 157 dpt = device_get_softc(dev); 158 dpt->dev = dev; 159 dpt_alloc(dev); 160 161 dpt->io_rid = 0; 162 dpt->io_type = SYS_RES_IOPORT; 163 dpt->irq_rid = 0; 164 165 error = dpt_alloc_resources(dev); 166 if (error) { 167 goto bad; 168 } 169 170 dpt->drq_rid = 0; 171 dpt->drq_res = bus_alloc_resource_any(dev, SYS_RES_DRQ, &dpt->drq_rid, 172 RF_ACTIVE); 173 if (!dpt->drq_res) { 174 device_printf(dev, "No DRQ!\n"); 175 error = ENOMEM; 176 goto bad; 177 } 178 isa_dma_acquire(rman_get_start(dpt->drq_res)); 179 isa_dmacascade(rman_get_start(dpt->drq_res)); 180 181 /* Allocate a dmatag representing the capabilities of this attachment */ 182 if (bus_dma_tag_create( /* parent */ bus_get_dma_tag(dev), 183 /* alignemnt */ 1, 184 /* boundary */ 0, 185 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT, 186 /* highaddr */ BUS_SPACE_MAXADDR, 187 /* filter */ NULL, 188 /* filterarg */ NULL, 189 /* maxsize */ BUS_SPACE_MAXSIZE_32BIT, 190 /* nsegments */ ~0, 191 /* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT, 192 /* flags */ 0, 193 /* lockfunc */ NULL, 194 /* lockarg */ NULL, 195 &dpt->parent_dmat) != 0) { 196 error = ENXIO; 197 goto bad; 198 } 199 200 if (dpt_init(dpt) != 0) { 201 error = ENXIO; 202 goto bad; 203 } 204 205 /* Register with the XPT */ 206 dpt_attach(dpt); 207 208 if (bus_setup_intr(dev, dpt->irq_res, INTR_TYPE_CAM | INTR_ENTROPY | 209 INTR_MPSAFE, NULL, dpt_intr, dpt, &dpt->ih)) { 210 device_printf(dev, "Unable to register interrupt handler\n"); 211 error = ENXIO; 212 goto bad; 213 } 214 215 return (error); 216 217 bad: 218 if (dpt->drq_res) { 219 isa_dma_release(rman_get_start(dpt->drq_res)); 220 } 221 222 dpt_release_resources(dev); 223 224 if (dpt) 225 dpt_free(dpt); 226 227 return (error); 228} 229 230static int 231dpt_isa_detach (device_t dev) 232{ 233 dpt_softc_t * dpt; 234 int dma; 235 int error; 236 237 dpt = device_get_softc(dev); 238 239 dma = rman_get_start(dpt->drq_res); 240 error = dpt_detach(dev); 241 isa_dma_release(dma); 242 243 return (error); 244} 245 246 247static device_method_t dpt_isa_methods[] = { 248 /* Device interface */ 249#ifdef notyet 250 DEVMETHOD(device_identify, dpt_isa_identify), 251#endif 252 DEVMETHOD(device_probe, dpt_isa_probe), 253 DEVMETHOD(device_attach, dpt_isa_attach), 254 DEVMETHOD(device_detach, dpt_isa_detach), 255 256 { 0, 0 } 257}; 258 259static driver_t dpt_isa_driver = { 260 "dpt", 261 dpt_isa_methods, 262 sizeof(dpt_softc_t), 263}; 264 265DRIVER_MODULE(dpt, isa, dpt_isa_driver, dpt_devclass, 0, 0); 266MODULE_DEPEND(dpt, isa, 1, 1, 1); 267MODULE_DEPEND(dpt, cam, 1, 1, 1); 268