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 1.5 2003/08/07 21:17:09 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 /* autoq */ 0, 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 return (dev); 119 } 120 121 void 122 gdt_destroy_dev(dev_t dev) 123 { 124 if (dev != NULL) 125 destroy_dev(dev); 126 } 127 128 /* 129 * Given a minor device number, 130 * return the pointer to its softc structure 131 */ 132 static struct gdt_softc * 133 gdt_minor2softc(int minor_no) 134 { 135 struct gdt_softc *gdt; 136 int hanum; 137 138 #ifdef SDEV_PER_HBA 139 hanum = minor2hba(minor_no); 140 #else 141 hanum = minor_no; 142 #endif 143 144 for (gdt = TAILQ_FIRST(&gdt_softcs); 145 gdt != NULL && gdt->sc_hanum != hanum; 146 gdt = TAILQ_NEXT(gdt, links)); 147 148 return (gdt); 149 } 150 151 static int 152 iir_open(dev_t dev, int flags, int fmt, d_thread_t * p) 153 { 154 GDT_DPRINTF(GDT_D_DEBUG, ("iir_open()\n")); 155 156 #ifdef SDEV_PER_HBA 157 int minor_no; 158 struct gdt_softc *gdt; 159 160 minor_no = minor(dev); 161 gdt = gdt_minor2softc(minor_no); 162 if (gdt == NULL) 163 return (ENXIO); 164 #endif 165 166 return (0); 167 } 168 169 static int 170 iir_close(dev_t dev, int flags, int fmt, d_thread_t * p) 171 { 172 GDT_DPRINTF(GDT_D_DEBUG, ("iir_close()\n")); 173 174 #ifdef SDEV_PER_HBA 175 int minor_no; 176 struct gdt_softc *gdt; 177 178 minor_no = minor(dev); 179 gdt = gdt_minor2softc(minor_no); 180 if (gdt == NULL) 181 return (ENXIO); 182 #endif 183 184 return (0); 185 } 186 187 static int 188 iir_write(dev_t dev, struct uio * uio, int ioflag) 189 { 190 GDT_DPRINTF(GDT_D_DEBUG, ("iir_write()\n")); 191 192 #ifdef SDEV_PER_HBA 193 int minor_no; 194 struct gdt_softc *gdt; 195 196 minor_no = minor(dev); 197 gdt = gdt_minor2softc(minor_no); 198 if (gdt == NULL) 199 return (ENXIO); 200 #endif 201 202 return (0); 203 } 204 205 static int 206 iir_read(dev_t dev, struct uio * uio, int ioflag) 207 { 208 GDT_DPRINTF(GDT_D_DEBUG, ("iir_read()\n")); 209 210 #ifdef SDEV_PER_HBA 211 int minor_no; 212 struct gdt_softc *gdt; 213 214 minor_no = minor(dev); 215 gdt = gdt_minor2softc(minor_no); 216 if (gdt == NULL) 217 return (ENXIO); 218 #endif 219 220 return (0); 221 } 222 223 /** 224 * This is the control syscall interface. 225 * It should be binary compatible with UnixWare, 226 * if not totally syntatically so. 227 */ 228 229 static int 230 iir_ioctl(dev_t dev, u_long cmd, caddr_t cmdarg, int flags, d_thread_t * p) 231 { 232 GDT_DPRINTF(GDT_D_DEBUG, ("iir_ioctl() cmd 0x%lx\n",cmd)); 233 234 #ifdef SDEV_PER_HBA 235 int minor_no; 236 struct gdt_softc *gdt; 237 238 minor_no = minor(dev); 239 gdt = gdt_minor2softc(minor_no); 240 if (gdt == NULL) 241 return (ENXIO); 242 #endif 243 ++gdt_stat.io_count_act; 244 if (gdt_stat.io_count_act > gdt_stat.io_count_max) 245 gdt_stat.io_count_max = gdt_stat.io_count_act; 246 247 switch (cmd) { 248 case GDT_IOCTL_GENERAL: 249 { 250 gdt_ucmd_t *ucmd; 251 struct gdt_softc *gdt; 252 int lock; 253 254 ucmd = (gdt_ucmd_t *)cmdarg; 255 gdt = gdt_minor2softc(ucmd->io_node); 256 if (gdt == NULL) 257 return (ENXIO); 258 lock = splcam(); 259 TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links); 260 ucmd->complete_flag = FALSE; 261 splx(lock); 262 gdt_next(gdt); 263 if (!ucmd->complete_flag) 264 (void) tsleep((void *)ucmd, PCATCH, "iirucw", 0); 265 break; 266 } 267 268 case GDT_IOCTL_DRVERS: 269 *(int *)cmdarg = 270 (IIR_DRIVER_VERSION << 8) | IIR_DRIVER_SUBVERSION; 271 break; 272 273 case GDT_IOCTL_CTRTYPE: 274 { 275 gdt_ctrt_t *p; 276 struct gdt_softc *gdt; 277 278 p = (gdt_ctrt_t *)cmdarg; 279 gdt = gdt_minor2softc(p->io_node); 280 if (gdt == NULL) 281 return (ENXIO); 282 p->oem_id = 0x8000; 283 p->type = 0xfd; 284 p->info = (gdt->sc_bus << 8) | (gdt->sc_slot << 3); 285 p->ext_type = 0x6000 | gdt->sc_subdevice; 286 p->device_id = gdt->sc_device; 287 p->sub_device_id = gdt->sc_subdevice; 288 break; 289 } 290 291 case GDT_IOCTL_OSVERS: 292 { 293 gdt_osv_t *p; 294 295 p = (gdt_osv_t *)cmdarg; 296 p->oscode = 10; 297 p->version = osrelease[0] - '0'; 298 if (osrelease[1] == '.') 299 p->subversion = osrelease[2] - '0'; 300 else 301 p->subversion = 0; 302 if (osrelease[3] == '.') 303 p->revision = osrelease[4] - '0'; 304 else 305 p->revision = 0; 306 strcpy(p->name, ostype); 307 break; 308 } 309 310 case GDT_IOCTL_CTRCNT: 311 *(int *)cmdarg = gdt_cnt; 312 break; 313 314 case GDT_IOCTL_EVENT: 315 { 316 gdt_event_t *p; 317 int lock; 318 319 p = (gdt_event_t *)cmdarg; 320 if (p->erase == 0xff) { 321 if (p->dvr.event_source == GDT_ES_TEST) 322 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.test); 323 else if (p->dvr.event_source == GDT_ES_DRIVER) 324 p->dvr.event_data.size= sizeof(p->dvr.event_data.eu.driver); 325 else if (p->dvr.event_source == GDT_ES_SYNC) 326 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.sync); 327 else 328 p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.async); 329 lock = splcam(); 330 gdt_store_event(p->dvr.event_source, p->dvr.event_idx, 331 &p->dvr.event_data); 332 splx(lock); 333 } else if (p->erase == 0xfe) { 334 lock = splcam(); 335 gdt_clear_events(); 336 splx(lock); 337 } else if (p->erase == 0) { 338 p->handle = gdt_read_event(p->handle, &p->dvr); 339 } else { 340 gdt_readapp_event((u_int8_t)p->erase, &p->dvr); 341 } 342 break; 343 } 344 345 case GDT_IOCTL_STATIST: 346 { 347 gdt_statist_t *p; 348 349 p = (gdt_statist_t *)cmdarg; 350 bcopy(&gdt_stat, p, sizeof(gdt_statist_t)); 351 break; 352 } 353 354 default: 355 break; 356 } 357 358 --gdt_stat.io_count_act; 359 return (0); 360 } 361 362 static void 363 iir_drvinit(void *unused) 364 { 365 GDT_DPRINTF(GDT_D_DEBUG, ("iir_drvinit()\n")); 366 367 if (!iir_devsw_installed) { 368 /* Add the I/O (data) channel */ 369 cdevsw_add(&iir_cdevsw); 370 iir_devsw_installed = 1; 371 } 372 } 373 374 SYSINIT(iir_dev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR, iir_drvinit, NULL) 375