sys/dev/raid/iir/iir_ctrl.c

   1 /* $FreeBSD: src/sys/dev/iir/iir_ctrl.c,v 1.17 2005/05/06 02:32:34 cperciva Exp $ */
   2 /* $DragonFly: src/sys/dev/raid/iir/iir_ctrl.c,v 1.13 2007/05/17 21:08:49 dillon Exp $ */
   3 /*-
   4  *       Copyright (c) 2000-03 ICP vortex GmbH
   5  *       Copyright (c) 2002-03 Intel Corporation
   6  *       Copyright (c) 2003    Adaptec Inc.
   7  *       All Rights Reserved
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions, and the following disclaimer,
  14  *    without modification, immediately at the beginning of the file.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  25  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /*
  35  * iir_ctrl.c: Control functions and /dev entry points for /dev/iir*
  36  *
  37  * Written by: Achim Leubner <achim_leubner@adaptec.com>
  38  * Fixes/Additions: Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com>
  39  *
  40  * $Id: iir_ctrl.c 1.3 2003/08/26 12:31:15 achim Exp $"
  41  */
  42
  43
  44 #include <sys/param.h>
  45 #include <sys/systm.h>
  46 #include <sys/endian.h>
  47 #include <sys/malloc.h>
  48 #include <sys/kernel.h>
  49 #include <sys/uio.h>
  50 #include <sys/bus.h>
  51 #include <sys/conf.h>
  52 #include <sys/stat.h>
  53 #include <sys/device.h>
  54 #include <sys/thread2.h>
  55
  56 #include <vm/vm.h>
  57 #include <vm/vm_kern.h>
  58 #include <vm/vm_extern.h>
  59 #include <vm/pmap.h>
  60
  61 #include "iir.h"
  62
  63 /* Entry points and other prototypes */
  64 static struct gdt_softc *gdt_minor2softc(int minor_no);
  65
  66 static d_open_t         iir_open;
  67 static d_close_t        iir_close;
  68 static d_write_t        iir_write;
  69 static d_read_t         iir_read;
  70 static d_ioctl_t        iir_ioctl;
  71
  72 #define CDEV_MAJOR          IIR_CDEV_MAJOR
  73
  74 /* Normally, this is a static structure.  But we need it in pci/iir_pci.c */
  75 static struct dev_ops iir_ops = {
  76         { "iir", CDEV_MAJOR, 0 },
  77         .d_open =       iir_open,
  78         .d_close =      iir_close,
  79         .d_read =       iir_read,
  80         .d_write =      iir_write,
  81         .d_ioctl =      iir_ioctl,
  82 };
  83
  84 #ifndef SDEV_PER_HBA
  85 static int sdev_made = 0;
  86 #endif
  87 extern int gdt_cnt;
  88 extern char ostype[];
  89 extern char osrelease[];
  90 extern gdt_statist_t gdt_stat;
  91
  92 /*
  93  * Given a controller number,
  94  * make a special device and return the cdev_t
  95  */
  96 cdev_t
  97 gdt_make_dev(int unit)
  98 {
  99     cdev_t dev;
 100
 101 #ifdef SDEV_PER_HBA
 102     dev = make_dev(&iir_ops, hba2minor(unit), UID_ROOT, GID_OPERATOR,
 103                    S_IRUSR | S_IWUSR, "iir%d", unit);
 104 #else
 105     if (sdev_made)
 106         return (0);
 107     dev = make_dev(&iir_ops, 0, UID_ROOT, GID_OPERATOR,
 108                    S_IRUSR | S_IWUSR, "iir");
 109     sdev_made = 1;
 110 #endif
 111     reference_dev(dev);
 112     return (dev);
 113 }
 114
 115 void
 116 gdt_destroy_dev(cdev_t dev)
 117 {
 118     if (dev != NULL)
 119         destroy_dev(dev);
 120 }
 121
 122 /*
 123  * Given a minor device number,
 124  * return the pointer to its softc structure
 125  */
 126 static struct gdt_softc *
 127 gdt_minor2softc(int minor_no)
 128 {
 129     struct gdt_softc *gdt;
 130     int hanum;
 131
 132 #ifdef SDEV_PER_HBA
 133     hanum = minor2hba(minor_no);
 134 #else
 135     hanum = minor_no;
 136 #endif
 137
 138     for (gdt = TAILQ_FIRST(&gdt_softcs);
 139          gdt != NULL && gdt->sc_hanum != hanum;
 140          gdt = TAILQ_NEXT(gdt, links));
 141
 142     return (gdt);
 143 }
 144
 145 static int
 146 iir_open(struct dev_open_args *ap)
 147 {
 148     GDT_DPRINTF(GDT_D_DEBUG, ("iir_open()\n"));
 149
 150 #ifdef SDEV_PER_HBA
 151     int minor_no;
 152     struct gdt_softc *gdt;
 153
 154     minor_no = minor(dev);
 155     gdt = gdt_minor2softc(minor_no);
 156     if (gdt == NULL)
 157         return (ENXIO);
 158 #endif
 159
 160     return (0);
 161 }
 162
 163 static int
 164 iir_close(struct dev_close_args *ap)
 165 {
 166     GDT_DPRINTF(GDT_D_DEBUG, ("iir_close()\n"));
 167
 168 #ifdef SDEV_PER_HBA
 169     int minor_no;
 170     struct gdt_softc *gdt;
 171
 172     minor_no = minor(dev);
 173     gdt = gdt_minor2softc(minor_no);
 174     if (gdt == NULL)
 175         return (ENXIO);
 176 #endif
 177
 178     return (0);
 179 }
 180
 181 static int
 182 iir_write(struct dev_write_args *ap)
 183 {
 184     GDT_DPRINTF(GDT_D_DEBUG, ("iir_write()\n"));
 185
 186 #ifdef SDEV_PER_HBA
 187     int minor_no;
 188     struct gdt_softc *gdt;
 189
 190     minor_no = minor(dev);
 191     gdt = gdt_minor2softc(minor_no);
 192     if (gdt == NULL)
 193         return (ENXIO);
 194 #endif
 195
 196     return (0);
 197 }
 198
 199 static int
 200 iir_read(struct dev_read_args *ap)
 201 {
 202     GDT_DPRINTF(GDT_D_DEBUG, ("iir_read()\n"));
 203
 204 #ifdef SDEV_PER_HBA
 205     int minor_no;
 206     struct gdt_softc *gdt;
 207
 208     minor_no = minor(dev);
 209     gdt = gdt_minor2softc(minor_no);
 210     if (gdt == NULL)
 211         return (ENXIO);
 212 #endif
 213
 214     return (0);
 215 }
 216
 217 /**
 218  * This is the control syscall interface.
 219  * It should be binary compatible with UnixWare,
 220  * if not totally syntatically so.
 221  */
 222
 223 static int
 224 iir_ioctl(struct dev_ioctl_args *ap)
 225 {
 226     GDT_DPRINTF(GDT_D_DEBUG, ("iir_ioctl() cmd 0x%lx\n",cmd));
 227
 228 #ifdef SDEV_PER_HBA
 229     int minor_no;
 230     struct gdt_softc *gdt;
 231
 232     minor_no = minor(dev);
 233     gdt = gdt_minor2softc(minor_no);
 234     if (gdt == NULL)
 235         return (ENXIO);
 236 #endif
 237     ++gdt_stat.io_count_act;
 238     if (gdt_stat.io_count_act > gdt_stat.io_count_max)
 239         gdt_stat.io_count_max = gdt_stat.io_count_act;
 240
 241     switch (ap->a_cmd) {
 242       case GDT_IOCTL_GENERAL:
 243         {
 244             gdt_ucmd_t *ucmd;
 245             struct gdt_softc *gdt;
 246
 247             ucmd = (gdt_ucmd_t *)ap->a_data;
 248             gdt = gdt_minor2softc(ucmd->io_node);
 249             if (gdt == NULL)
 250                 return (ENXIO);
 251             crit_enter();
 252             TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links);
 253             ucmd->complete_flag = FALSE;
 254             crit_exit();
 255             gdt_next(gdt);
 256             if (!ucmd->complete_flag)
 257                 (void) tsleep((void *)ucmd, PCATCH, "iirucw", 0);
 258             break;
 259         }
 260
 261       case GDT_IOCTL_DRVERS:
 262       case GDT_IOCTL_DRVERS_OLD:
 263         *(int *)ap->a_data =
 264             (IIR_DRIVER_VERSION << 8) | IIR_DRIVER_SUBVERSION;
 265         break;
 266
 267       case GDT_IOCTL_CTRTYPE:
 268       case GDT_IOCTL_CTRTYPE_OLD:
 269         {
 270             gdt_ctrt_t *p;
 271             struct gdt_softc *gdt;
 272
 273             p = (gdt_ctrt_t *)ap->a_data;
 274             gdt = gdt_minor2softc(p->io_node);
 275             if (gdt == NULL)
 276                 return (ENXIO);
 277             /* only RP controllers */
 278             p->ext_type = 0x6000 | gdt->sc_device;
 279             if (gdt->sc_vendor == INTEL_VENDOR_ID) {
 280                 p->oem_id = OEM_ID_INTEL;
 281                 p->type = 0xfd;
 282                 /* new -> subdevice into ext_type */
 283                 if (gdt->sc_device >= 0x600)
 284                     p->ext_type = 0x6000 | gdt->sc_subdevice;
 285             } else {
 286                 p->oem_id = OEM_ID_ICP;
 287                 p->type = 0xfe;
 288                 /* new -> subdevice into ext_type */
 289                 if (gdt->sc_device >= 0x300)
 290                     p->ext_type = 0x6000 | gdt->sc_subdevice;
 291             }
 292             p->info = (gdt->sc_bus << 8) | (gdt->sc_slot << 3);
 293             p->device_id = gdt->sc_device;
 294             p->sub_device_id = gdt->sc_subdevice;
 295             break;
 296         }
 297
 298       case GDT_IOCTL_OSVERS:
 299         {
 300             gdt_osv_t *p;
 301
 302             p = (gdt_osv_t *)ap->a_data;
 303             p->oscode = 10;
 304             p->version = osrelease[0] - '0';
 305             if (osrelease[1] == '.')
 306                 p->subversion = osrelease[2] - '0';
 307             else
 308                 p->subversion = 0;
 309             if (osrelease[3] == '.')
 310                 p->revision = osrelease[4] - '0';
 311             else
 312                 p->revision = 0;
 313             strcpy(p->name, ostype);
 314             break;
 315         }
 316
 317       case GDT_IOCTL_CTRCNT:
 318         *(int *)ap->a_data = gdt_cnt;
 319         break;
 320
 321       case GDT_IOCTL_EVENT:
 322         {
 323             gdt_event_t *p;
 324
 325             p = (gdt_event_t *)ap->a_data;
 326             if (p->erase == 0xff) {
 327                 if (p->dvr.event_source == GDT_ES_TEST)
 328                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.test);
 329                 else if (p->dvr.event_source == GDT_ES_DRIVER)
 330                     p->dvr.event_data.size= sizeof(p->dvr.event_data.eu.driver);
 331                 else if (p->dvr.event_source == GDT_ES_SYNC)
 332                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.sync);
 333                 else
 334                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.async);
 335                 crit_enter();
 336                 gdt_store_event(p->dvr.event_source, p->dvr.event_idx,
 337                                 &p->dvr.event_data);
 338                 crit_exit();
 339             } else if (p->erase == 0xfe) {
 340                 crit_enter();
 341                 gdt_clear_events();
 342                 crit_exit();
 343             } else if (p->erase == 0) {
 344                 p->handle = gdt_read_event(p->handle, &p->dvr);
 345             } else {
 346                 gdt_readapp_event((u_int8_t)p->erase, &p->dvr);
 347             }
 348             break;
 349         }
 350
 351       case GDT_IOCTL_STATIST:
 352         {
 353             gdt_statist_t *p;
 354
 355             p = (gdt_statist_t *)ap->a_data;
 356             bcopy(&gdt_stat, p, sizeof(gdt_statist_t));
 357             break;
 358         }
 359
 360       default:
 361         break;
 362     }
 363
 364     --gdt_stat.io_count_act;
 365     return (0);
 366 }
 367