1 /* $FreeBSD: src/sys/dev/iir/iir_ctrl.c,v 1.2.2.4 2002/05/05 08:18:12 asmodai Exp $ */ 2 /* 3 * Copyright (c) 2000-01 Intel Corporation 4 * All Rights Reserved 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions, and the following disclaimer, 11 * without modification, immediately at the beginning of the file. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 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 FOR 22 * 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 /* 32 * iir_ctrl.c: Control functions and /dev entry points for /dev/iir* 33 * 34 * Written by: Achim Leubner <achim.leubner@intel.com> 35 * Fixes/Additions: Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com> 36 * 37 * TODO: 38 */ 39 40 #ident "$Id: iir_ctrl.c 1.2 2001/07/18 11:17:22 achim Exp $" 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/malloc.h> 45 #include <sys/kernel.h> 46 #include <sys/uio.h> 47 #include <sys/conf.h> 48 #include <sys/stat.h> 49 #include <sys/disklabel.h> 50 #include <machine/bus.h> 51 #include <vm/vm.h> 52 #include <vm/vm_kern.h> 53 #include <vm/vm_extern.h> 54 #include <vm/pmap.h> 55 56 #include <dev/iir/iir.h> 57 58 /* Entry points and other prototypes */ 59 static struct gdt_softc *gdt_minor2softc(int minor_no); 60 61 static d_open_t iir_open; 62 static d_close_t iir_close; 63 static d_write_t iir_write; 64 static d_read_t iir_read; 65 static d_ioctl_t iir_ioctl; 66 67 #define CDEV_MAJOR IIR_CDEV_MAJOR 68 69 /* Normally, this is a static structure. But we need it in pci/iir_pci.c */ 70 static struct cdevsw iir_cdevsw = { 71 /* open */ iir_open, 72 /* close */ iir_close, 73 /* read */ iir_read, 74 /* write */ iir_write, 75 /* ioctl */ iir_ioctl, 76 /* poll */ nopoll, 77 /* mmap */ nommap, 78 /* strategy */ nostrategy, 79 /* name */ "iir", 80 /* maj */ CDEV_MAJOR, 81 /* dump */ nodump, 82 /* psize */ nopsize, 83 /* flags */ 0, 84 /* bmaj */ -1 85 }; 86 87 static int iir_devsw_installed = 0; 88 #ifndef SDEV_PER_HBA 89 static int sdev_made = 0; 90 #endif 91 extern int gdt_cnt; 92 extern char ostype[]; 93 extern char osrelease[]; 94 extern gdt_statist_t gdt_stat; 95 96 /* 97 * Given a controller number, 98 * make a special device and return the dev_t 99 */ 100 dev_t 101 gdt_make_dev(int unit) 102 { 103 dev_t dev; 104 105 #ifdef SDEV_PER_HBA 106 dev = make_dev(&iir_cdevsw, hba2minor(unit), UID_ROOT, GID_OPERATOR, 107 S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH, "iir%d", unit); 108 #else 109 if (sdev_made) 110 return (0); 111 dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR, 112 S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH, "iir"); 113 sdev_made = 1; 114 #endif 115 return (dev); 116 } 117 118 void 119 gdt_destroy_dev(dev_t dev) 120 { 121 if (dev != NULL) 122 destroy_dev(dev); 123 } 124 125 /* 126 * Given a minor device number, 127 * return the pointer to its softc structure 128 */ 129 static struct gdt_softc * 130 gdt_minor2softc(int minor_no) 131 { 132 struct gdt_softc *gdt; 133 int hanum; 134 135 #ifdef SDEV_PER_HBA 136 hanum = minor2hba(minor_no); 137 #else 138 hanum = minor_no; 139 #endif 140 141 for (gdt = TAILQ_FIRST(&gdt_softcs); 142 gdt != NULL && gdt->sc_hanum != hanum; 143 gdt = TAILQ_NEXT(gdt, links)); 144 145 return (gdt); 146 } 147 148 static int 149 iir_open(dev_t dev, int flags, int fmt, d_thread_t * p) 150 { 151 GDT_DPRINTF(GDT_D_DEBUG, ("iir_open()\n")); 152 153 #ifdef SDEV_PER_HBA 154 int minor_no; 155 struct gdt_softc *gdt; 156 157 minor_no = minor(dev); 158 gdt = gdt_minor2softc(minor_no); 159 if (gdt == NULL) 160 return (ENXIO); 161 #endif 162 163 return (0); 164 } 165 166 static int 167 iir_close(dev_t dev, int flags, int fmt, d_thread_t * p) 168 { 169 GDT_DPRINTF(GDT_D_DEBUG, ("iir_close()\n")); 170 171 #ifdef SDEV_PER_HBA 172 int minor_no; 173 struct gdt_softc *gdt; 174 175 minor_no = minor(dev); 176 gdt = gdt_minor2softc(minor_no); 177 if (gdt == NULL) 178 return (ENXIO); 179 #endif 180 181 return (0); 182 } 183 184 static int 185 iir_write(dev_t dev, struct uio * uio, int ioflag) 186 { 187 GDT_DPRINTF(GDT_D_DEBUG, ("iir_write()\n")); 188 189 #ifdef SDEV_PER_HBA 190 int minor_no; 191 struct gdt_softc *gdt; 192 193 minor_no = minor(dev); 194 gdt = gdt_minor2softc(minor_no); 195 if (gdt == NULL) 196 return (ENXIO); 197 #endif 198 199 return (0); 200 } 201 202 static int 203 iir_read(dev_t dev, struct uio * uio, int ioflag) 204 { 205 GDT_DPRINTF(GDT_D_DEBUG, ("iir_read()\n")); 206 207 #ifdef SDEV_PER_HBA 208 int minor_no; 209 struct gdt_softc *gdt; 210 211 minor_no = minor(dev); 212 gdt = gdt_minor2softc(minor_no); 213 if (gdt == NULL) 214 return (ENXIO); 215 #endif 216 217 return (0); 218 } 219 220 /** 221 * This is the control syscall interface. 222 * It should be binary compatible with UnixWare, 223 * if not totally syntatically so. 224 */ 225 226 static int 227 iir_ioctl(dev_t dev, u_long cmd, caddr_t cmdarg, int flags, d_thread_t * p) 228 { 229 GDT_DPRINTF(GDT_D_DEBUG, ("iir_ioctl() cmd 0x%lx\n",cmd)); 230 231 #ifdef SDEV_PER_HBA 232 int minor_no; 233 struct gdt_softc *gdt; 234 235 minor_no = minor(dev); 236 gdt = gdt_minor2softc(minor_no); 237 if (gdt == NULL) 238 return (ENXIO); 239 #endif 240 ++gdt_stat.io_count_act; 241 if (gdt_stat.io_count_act > gdt_stat.io_count_max) 242 gdt_stat.io_count_max = gdt_stat.io_count_act; 243 244 switch (cmd) { 245 case GDT_IOCTL_GENERAL: 246 { 247 gdt_ucmd_t *ucmd; 248 struct gdt_softc *gdt; 249 int lock; 250 251 ucmd = (gdt_ucmd_t *)cmdarg; 252 gdt = gdt_minor2softc(ucmd->io_node); 253 if (gdt == NULL) 254 return (ENXIO); 255 lock = splcam(); 256 TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links); 257 ucmd->complete_flag = FALSE; 258 splx(lock); 259 gdt_next(gdt); 260 if (!ucmd->complete_flag) 261 (void) tsleep((void *)ucmd, PCATCH | PRIBIO, "iirucw", 0); 262 break; 263 } 264 265 case GDT_IOCTL_DRVERS: 266 *(int *)cmdarg = 267 (IIR_DRIVER_VERSION << 8) | IIR_DRIVER_SUBVERSION; 268 break; 269 270 case GDT_IOCTL_CTRTYPE: 271 { 272 gdt_ctrt_t *p; 273 struct gdt_softc *gdt; 274 275 p = (gdt_ctrt_t *)cmdarg; 276 gdt = gdt_minor2softc(p->io_node); 277 if (gdt == NULL) 278 return (ENXIO); 279 p->oem_id = 0x8000; 280 p->type = 0xfd; 281 p->info = (gdt->sc_bus << 8) | (gdt->sc_slot << 3); 282 p->ext_type = 0x6000 | gdt->sc_subdevice; 283 p->device_id = gdt->sc_device; 284 p->sub_device_id = gdt->sc_subdevice; 285 break; 286 } 287 288 case GDT_IOCTL_OSVERS: 289 { 290 gdt_osv_t *p; 291 292 p = (gdt_osv_t *)cmdarg; 293 p->oscode = 10; 294 p->version = osrelease[0] - '0'; 295 if (osrelease[1] == '.') 296 p->subversion = osrelease[2] - '0'; 297 else 298 p->subversion = 0; 299 if (osrelease[3] == '.') 300 p->revision = osrelease[4] - '0'; 301 else 302 p->revision = 0; 303 strcpy(p->name, ostype); 304 break; 305 } 306 307 case GDT_IOCTL_CTRCNT: 308 *(int *)cmdarg = gdt_cnt; 309 break; 310 311 case GDT_IOCTL_EVENT: 312 { 313 gdt_event_t *p; 314 int lock; 315 316 p = (gdt_event_t *)cmdarg; 317 if (p->erase == 0xff) { 318 if (p->dvr.event_source == GDT_ES_TEST) 319 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.test); 320 else if (p->dvr.event_source == GDT_ES_DRIVER) 321 p->dvr.event_data.size= sizeof(p->dvr.event_data.eu.driver); 322 else if (p->dvr.event_source == GDT_ES_SYNC) 323 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.sync); 324 else 325 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.async); 326 lock = splcam(); 327 gdt_store_event(p->dvr.event_source, p->dvr.event_idx, 328 &p->dvr.event_data); 329 splx(lock); 330 } else if (p->erase == 0xfe) { 331 lock = splcam(); 332 gdt_clear_events(); 333 splx(lock); 334 } else if (p->erase == 0) { 335 p->handle = gdt_read_event(p->handle, &p->dvr); 336 } else { 337 gdt_readapp_event((u_int8_t)p->erase, &p->dvr); 338 } 339 break; 340 } 341 342 case GDT_IOCTL_STATIST: 343 { 344 gdt_statist_t *p; 345 346 p = (gdt_statist_t *)cmdarg; 347 bcopy(&gdt_stat, p, sizeof(gdt_statist_t)); 348 break; 349 } 350 351 default: 352 break; 353 } 354 355 --gdt_stat.io_count_act; 356 return (0); 357 } 358 359 static void 360 iir_drvinit(void *unused) 361 { 362 GDT_DPRINTF(GDT_D_DEBUG, ("iir_drvinit()\n")); 363 364 if (!iir_devsw_installed) { 365 /* Add the I/O (data) channel */ 366 cdevsw_add(&iir_cdevsw); 367 iir_devsw_installed = 1; 368 } 369 } 370 371 SYSINIT(iir_dev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR, iir_drvinit, NULL) 372