1 /* $FreeBSD: src/sys/dev/iir/iir_ctrl.c,v 1.2.2.4 2002/05/05 08:18:12 asmodai Exp $ */ 2 /* $DragonFly: src/sys/dev/raid/iir/iir_ctrl.c,v 1.7 2004/05/19 22:52:47 dillon Exp $ */ 3 /* 4 * Copyright (c) 2000-01 Intel Corporation 5 * All Rights Reserved 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * iir_ctrl.c: Control functions and /dev entry points for /dev/iir* 34 * 35 * Written by: Achim Leubner <achim.leubner@intel.com> 36 * Fixes/Additions: Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com> 37 * 38 * TODO: 39 */ 40 41 #ident "$Id: iir_ctrl.c 1.2 2001/07/18 11:17:22 achim Exp $" 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/malloc.h> 46 #include <sys/kernel.h> 47 #include <sys/uio.h> 48 #include <sys/conf.h> 49 #include <sys/stat.h> 50 #include <sys/disklabel.h> 51 #include <machine/bus.h> 52 #include <vm/vm.h> 53 #include <vm/vm_kern.h> 54 #include <vm/vm_extern.h> 55 #include <vm/pmap.h> 56 57 #include "iir.h" 58 59 /* Entry points and other prototypes */ 60 static struct gdt_softc *gdt_minor2softc(int minor_no); 61 62 static d_open_t iir_open; 63 static d_close_t iir_close; 64 static d_write_t iir_write; 65 static d_read_t iir_read; 66 static d_ioctl_t iir_ioctl; 67 68 #define CDEV_MAJOR IIR_CDEV_MAJOR 69 70 /* Normally, this is a static structure. But we need it in pci/iir_pci.c */ 71 static struct cdevsw iir_cdevsw = { 72 /* name */ "iir", 73 /* maj */ CDEV_MAJOR, 74 /* flags */ 0, 75 /* port */ NULL, 76 /* clone */ NULL, 77 78 /* open */ iir_open, 79 /* close */ iir_close, 80 /* read */ iir_read, 81 /* write */ iir_write, 82 /* ioctl */ iir_ioctl, 83 /* poll */ nopoll, 84 /* mmap */ nommap, 85 /* strategy */ nostrategy, 86 /* dump */ nodump, 87 /* psize */ nopsize 88 }; 89 90 static int iir_devsw_installed = 0; 91 #ifndef SDEV_PER_HBA 92 static int sdev_made = 0; 93 #endif 94 extern int gdt_cnt; 95 extern char ostype[]; 96 extern char osrelease[]; 97 extern gdt_statist_t gdt_stat; 98 99 /* 100 * Given a controller number, 101 * make a special device and return the dev_t 102 */ 103 dev_t 104 gdt_make_dev(int unit) 105 { 106 dev_t dev; 107 108 #ifdef SDEV_PER_HBA 109 dev = make_dev(&iir_cdevsw, hba2minor(unit), UID_ROOT, GID_OPERATOR, 110 S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH, "iir%d", unit); 111 #else 112 if (sdev_made) 113 return (0); 114 dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR, 115 S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH, "iir"); 116 sdev_made = 1; 117 #endif 118 reference_dev(dev); 119 return (dev); 120 } 121 122 void 123 gdt_destroy_dev(dev_t dev) 124 { 125 if (dev != NULL) 126 destroy_dev(dev); 127 } 128 129 /* 130 * Given a minor device number, 131 * return the pointer to its softc structure 132 */ 133 static struct gdt_softc * 134 gdt_minor2softc(int minor_no) 135 { 136 struct gdt_softc *gdt; 137 int hanum; 138 139 #ifdef SDEV_PER_HBA 140 hanum = minor2hba(minor_no); 141 #else 142 hanum = minor_no; 143 #endif 144 145 for (gdt = TAILQ_FIRST(&gdt_softcs); 146 gdt != NULL && gdt->sc_hanum != hanum; 147 gdt = TAILQ_NEXT(gdt, links)); 148 149 return (gdt); 150 } 151 152 static int 153 iir_open(dev_t dev, int flags, int fmt, d_thread_t * p) 154 { 155 GDT_DPRINTF(GDT_D_DEBUG, ("iir_open()\n")); 156 157 #ifdef SDEV_PER_HBA 158 int minor_no; 159 struct gdt_softc *gdt; 160 161 minor_no = minor(dev); 162 gdt = gdt_minor2softc(minor_no); 163 if (gdt == NULL) 164 return (ENXIO); 165 #endif 166 167 return (0); 168 } 169 170 static int 171 iir_close(dev_t dev, int flags, int fmt, d_thread_t * p) 172 { 173 GDT_DPRINTF(GDT_D_DEBUG, ("iir_close()\n")); 174 175 #ifdef SDEV_PER_HBA 176 int minor_no; 177 struct gdt_softc *gdt; 178 179 minor_no = minor(dev); 180 gdt = gdt_minor2softc(minor_no); 181 if (gdt == NULL) 182 return (ENXIO); 183 #endif 184 185 return (0); 186 } 187 188 static int 189 iir_write(dev_t dev, struct uio * uio, int ioflag) 190 { 191 GDT_DPRINTF(GDT_D_DEBUG, ("iir_write()\n")); 192 193 #ifdef SDEV_PER_HBA 194 int minor_no; 195 struct gdt_softc *gdt; 196 197 minor_no = minor(dev); 198 gdt = gdt_minor2softc(minor_no); 199 if (gdt == NULL) 200 return (ENXIO); 201 #endif 202 203 return (0); 204 } 205 206 static int 207 iir_read(dev_t dev, struct uio * uio, int ioflag) 208 { 209 GDT_DPRINTF(GDT_D_DEBUG, ("iir_read()\n")); 210 211 #ifdef SDEV_PER_HBA 212 int minor_no; 213 struct gdt_softc *gdt; 214 215 minor_no = minor(dev); 216 gdt = gdt_minor2softc(minor_no); 217 if (gdt == NULL) 218 return (ENXIO); 219 #endif 220 221 return (0); 222 } 223 224 /** 225 * This is the control syscall interface. 226 * It should be binary compatible with UnixWare, 227 * if not totally syntatically so. 228 */ 229 230 static int 231 iir_ioctl(dev_t dev, u_long cmd, caddr_t cmdarg, int flags, d_thread_t * p) 232 { 233 GDT_DPRINTF(GDT_D_DEBUG, ("iir_ioctl() cmd 0x%lx\n",cmd)); 234 235 #ifdef SDEV_PER_HBA 236 int minor_no; 237 struct gdt_softc *gdt; 238 239 minor_no = minor(dev); 240 gdt = gdt_minor2softc(minor_no); 241 if (gdt == NULL) 242 return (ENXIO); 243 #endif 244 ++gdt_stat.io_count_act; 245 if (gdt_stat.io_count_act > gdt_stat.io_count_max) 246 gdt_stat.io_count_max = gdt_stat.io_count_act; 247 248 switch (cmd) { 249 case GDT_IOCTL_GENERAL: 250 { 251 gdt_ucmd_t *ucmd; 252 struct gdt_softc *gdt; 253 int lock; 254 255 ucmd = (gdt_ucmd_t *)cmdarg; 256 gdt = gdt_minor2softc(ucmd->io_node); 257 if (gdt == NULL) 258 return (ENXIO); 259 lock = splcam(); 260 TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links); 261 ucmd->complete_flag = FALSE; 262 splx(lock); 263 gdt_next(gdt); 264 if (!ucmd->complete_flag) 265 (void) tsleep((void *)ucmd, PCATCH, "iirucw", 0); 266 break; 267 } 268 269 case GDT_IOCTL_DRVERS: 270 *(int *)cmdarg = 271 (IIR_DRIVER_VERSION << 8) | IIR_DRIVER_SUBVERSION; 272 break; 273 274 case GDT_IOCTL_CTRTYPE: 275 { 276 gdt_ctrt_t *p; 277 struct gdt_softc *gdt; 278 279 p = (gdt_ctrt_t *)cmdarg; 280 gdt = gdt_minor2softc(p->io_node); 281 if (gdt == NULL) 282 return (ENXIO); 283 p->oem_id = 0x8000; 284 p->type = 0xfd; 285 p->info = (gdt->sc_bus << 8) | (gdt->sc_slot << 3); 286 p->ext_type = 0x6000 | gdt->sc_subdevice; 287 p->device_id = gdt->sc_device; 288 p->sub_device_id = gdt->sc_subdevice; 289 break; 290 } 291 292 case GDT_IOCTL_OSVERS: 293 { 294 gdt_osv_t *p; 295 296 p = (gdt_osv_t *)cmdarg; 297 p->oscode = 10; 298 p->version = osrelease[0] - '0'; 299 if (osrelease[1] == '.') 300 p->subversion = osrelease[2] - '0'; 301 else 302 p->subversion = 0; 303 if (osrelease[3] == '.') 304 p->revision = osrelease[4] - '0'; 305 else 306 p->revision = 0; 307 strcpy(p->name, ostype); 308 break; 309 } 310 311 case GDT_IOCTL_CTRCNT: 312 *(int *)cmdarg = gdt_cnt; 313 break; 314 315 case GDT_IOCTL_EVENT: 316 { 317 gdt_event_t *p; 318 int lock; 319 320 p = (gdt_event_t *)cmdarg; 321 if (p->erase == 0xff) { 322 if (p->dvr.event_source == GDT_ES_TEST) 323 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.test); 324 else if (p->dvr.event_source == GDT_ES_DRIVER) 325 p->dvr.event_data.size= sizeof(p->dvr.event_data.eu.driver); 326 else if (p->dvr.event_source == GDT_ES_SYNC) 327 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.sync); 328 else 329 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.async); 330 lock = splcam(); 331 gdt_store_event(p->dvr.event_source, p->dvr.event_idx, 332 &p->dvr.event_data); 333 splx(lock); 334 } else if (p->erase == 0xfe) { 335 lock = splcam(); 336 gdt_clear_events(); 337 splx(lock); 338 } else if (p->erase == 0) { 339 p->handle = gdt_read_event(p->handle, &p->dvr); 340 } else { 341 gdt_readapp_event((u_int8_t)p->erase, &p->dvr); 342 } 343 break; 344 } 345 346 case GDT_IOCTL_STATIST: 347 { 348 gdt_statist_t *p; 349 350 p = (gdt_statist_t *)cmdarg; 351 bcopy(&gdt_stat, p, sizeof(gdt_statist_t)); 352 break; 353 } 354 355 default: 356 break; 357 } 358 359 --gdt_stat.io_count_act; 360 return (0); 361 } 362 363 static void 364 iir_drvinit(void *unused) 365 { 366 GDT_DPRINTF(GDT_D_DEBUG, ("iir_drvinit()\n")); 367 368 if (!iir_devsw_installed) { 369 /* Add the I/O (data) channel */ 370 cdevsw_add(&iir_cdevsw, 0, 0); 371 iir_devsw_installed = 1; 372 } 373 } 374 375 SYSINIT(iir_dev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR, iir_drvinit, NULL) 376