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 1.9 2005/06/10 15:46:31 swildner 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 <sys/thread2.h> 52 #include <machine/bus.h> 53 #include <vm/vm.h> 54 #include <vm/vm_kern.h> 55 #include <vm/vm_extern.h> 56 #include <vm/pmap.h> 57 58 #include "iir.h" 59 60 /* Entry points and other prototypes */ 61 static struct gdt_softc *gdt_minor2softc(int minor_no); 62 63 static d_open_t iir_open; 64 static d_close_t iir_close; 65 static d_write_t iir_write; 66 static d_read_t iir_read; 67 static d_ioctl_t iir_ioctl; 68 69 #define CDEV_MAJOR IIR_CDEV_MAJOR 70 71 /* Normally, this is a static structure. But we need it in pci/iir_pci.c */ 72 static struct cdevsw iir_cdevsw = { 73 /* name */ "iir", 74 /* maj */ CDEV_MAJOR, 75 /* flags */ 0, 76 /* port */ NULL, 77 /* clone */ NULL, 78 79 /* open */ iir_open, 80 /* close */ iir_close, 81 /* read */ iir_read, 82 /* write */ iir_write, 83 /* ioctl */ iir_ioctl, 84 /* poll */ nopoll, 85 /* mmap */ nommap, 86 /* strategy */ nostrategy, 87 /* dump */ nodump, 88 /* psize */ nopsize 89 }; 90 91 static int iir_devsw_installed = 0; 92 #ifndef SDEV_PER_HBA 93 static int sdev_made = 0; 94 #endif 95 extern int gdt_cnt; 96 extern char ostype[]; 97 extern char osrelease[]; 98 extern gdt_statist_t gdt_stat; 99 100 /* 101 * Given a controller number, 102 * make a special device and return the dev_t 103 */ 104 dev_t 105 gdt_make_dev(int unit) 106 { 107 dev_t dev; 108 109 #ifdef SDEV_PER_HBA 110 dev = make_dev(&iir_cdevsw, hba2minor(unit), UID_ROOT, GID_OPERATOR, 111 S_IRUSR | S_IWUSR, "iir%d", unit); 112 #else 113 if (sdev_made) 114 return (0); 115 dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR, 116 S_IRUSR | S_IWUSR, "iir"); 117 sdev_made = 1; 118 #endif 119 reference_dev(dev); 120 return (dev); 121 } 122 123 void 124 gdt_destroy_dev(dev_t dev) 125 { 126 if (dev != NULL) 127 destroy_dev(dev); 128 } 129 130 /* 131 * Given a minor device number, 132 * return the pointer to its softc structure 133 */ 134 static struct gdt_softc * 135 gdt_minor2softc(int minor_no) 136 { 137 struct gdt_softc *gdt; 138 int hanum; 139 140 #ifdef SDEV_PER_HBA 141 hanum = minor2hba(minor_no); 142 #else 143 hanum = minor_no; 144 #endif 145 146 for (gdt = TAILQ_FIRST(&gdt_softcs); 147 gdt != NULL && gdt->sc_hanum != hanum; 148 gdt = TAILQ_NEXT(gdt, links)); 149 150 return (gdt); 151 } 152 153 static int 154 iir_open(dev_t dev, int flags, int fmt, d_thread_t * p) 155 { 156 GDT_DPRINTF(GDT_D_DEBUG, ("iir_open()\n")); 157 158 #ifdef SDEV_PER_HBA 159 int minor_no; 160 struct gdt_softc *gdt; 161 162 minor_no = minor(dev); 163 gdt = gdt_minor2softc(minor_no); 164 if (gdt == NULL) 165 return (ENXIO); 166 #endif 167 168 return (0); 169 } 170 171 static int 172 iir_close(dev_t dev, int flags, int fmt, d_thread_t * p) 173 { 174 GDT_DPRINTF(GDT_D_DEBUG, ("iir_close()\n")); 175 176 #ifdef SDEV_PER_HBA 177 int minor_no; 178 struct gdt_softc *gdt; 179 180 minor_no = minor(dev); 181 gdt = gdt_minor2softc(minor_no); 182 if (gdt == NULL) 183 return (ENXIO); 184 #endif 185 186 return (0); 187 } 188 189 static int 190 iir_write(dev_t dev, struct uio * uio, int ioflag) 191 { 192 GDT_DPRINTF(GDT_D_DEBUG, ("iir_write()\n")); 193 194 #ifdef SDEV_PER_HBA 195 int minor_no; 196 struct gdt_softc *gdt; 197 198 minor_no = minor(dev); 199 gdt = gdt_minor2softc(minor_no); 200 if (gdt == NULL) 201 return (ENXIO); 202 #endif 203 204 return (0); 205 } 206 207 static int 208 iir_read(dev_t dev, struct uio * uio, int ioflag) 209 { 210 GDT_DPRINTF(GDT_D_DEBUG, ("iir_read()\n")); 211 212 #ifdef SDEV_PER_HBA 213 int minor_no; 214 struct gdt_softc *gdt; 215 216 minor_no = minor(dev); 217 gdt = gdt_minor2softc(minor_no); 218 if (gdt == NULL) 219 return (ENXIO); 220 #endif 221 222 return (0); 223 } 224 225 /** 226 * This is the control syscall interface. 227 * It should be binary compatible with UnixWare, 228 * if not totally syntatically so. 229 */ 230 231 static int 232 iir_ioctl(dev_t dev, u_long cmd, caddr_t cmdarg, int flags, d_thread_t * p) 233 { 234 GDT_DPRINTF(GDT_D_DEBUG, ("iir_ioctl() cmd 0x%lx\n",cmd)); 235 236 #ifdef SDEV_PER_HBA 237 int minor_no; 238 struct gdt_softc *gdt; 239 240 minor_no = minor(dev); 241 gdt = gdt_minor2softc(minor_no); 242 if (gdt == NULL) 243 return (ENXIO); 244 #endif 245 ++gdt_stat.io_count_act; 246 if (gdt_stat.io_count_act > gdt_stat.io_count_max) 247 gdt_stat.io_count_max = gdt_stat.io_count_act; 248 249 switch (cmd) { 250 case GDT_IOCTL_GENERAL: 251 { 252 gdt_ucmd_t *ucmd; 253 struct gdt_softc *gdt; 254 255 ucmd = (gdt_ucmd_t *)cmdarg; 256 gdt = gdt_minor2softc(ucmd->io_node); 257 if (gdt == NULL) 258 return (ENXIO); 259 crit_enter(); 260 TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links); 261 ucmd->complete_flag = FALSE; 262 crit_exit(); 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; 318 319 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 crit_enter(); 330 gdt_store_event(p->dvr.event_source, p->dvr.event_idx, 331 &p->dvr.event_data); 332 crit_exit(); 333 } else if (p->erase == 0xfe) { 334 crit_enter(); 335 gdt_clear_events(); 336 crit_exit(); 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, 0, 0); 370 iir_devsw_installed = 1; 371 } 372 } 373 374 SYSINIT(iir_dev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR, iir_drvinit, NULL) 375