The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/iir/iir_ctrl.c

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    1 /* $FreeBSD: releng/5.1/sys/dev/iir/iir_ctrl.c 114001 2003-04-25 05:37:04Z scottl $ */
    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/endian.h>
   45 #include <sys/malloc.h>
   46 #include <sys/kernel.h>
   47 #include <sys/uio.h>
   48 #include <sys/conf.h>
   49 #include <sys/disk.h>
   50 #include <sys/stat.h>
   51 #include <sys/disklabel.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 <dev/iir/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         .d_open =       iir_open,
   74         .d_close =      iir_close,
   75         .d_read =       iir_read,
   76         .d_write =      iir_write,
   77         .d_ioctl =      iir_ioctl,
   78         .d_name =       "iir",
   79         .d_maj =        CDEV_MAJOR,
   80 };
   81 
   82 /*
   83 static int iir_devsw_installed = 0;
   84 */
   85 #ifndef SDEV_PER_HBA
   86 static int sdev_made = 0;
   87 #endif
   88 extern int gdt_cnt;
   89 extern char ostype[];
   90 extern char osrelease[];
   91 extern gdt_statist_t gdt_stat;
   92 
   93 /*
   94  * Given a controller number,
   95  * make a special device and return the dev_t
   96  */
   97 dev_t 
   98 gdt_make_dev(int unit)
   99 {
  100     dev_t dev;
  101 
  102 #ifdef SDEV_PER_HBA
  103     dev = make_dev(&iir_cdevsw, hba2minor(unit), UID_ROOT, GID_OPERATOR,
  104                    S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH, "iir%d", unit);
  105 #else
  106     if (sdev_made)
  107         return (0);
  108     dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR,
  109                    S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH, "iir");
  110     sdev_made = 1;
  111 #endif
  112     return (dev);
  113 }
  114 
  115 void
  116 gdt_destroy_dev(dev_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(dev_t dev, int flags, int fmt, d_thread_t * p)
  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(dev_t dev, int flags, int fmt, d_thread_t * p)
  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(dev_t dev, struct uio * uio, int ioflag)
  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(dev_t dev, struct uio * uio, int ioflag)
  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(dev_t dev, u_long cmd, caddr_t cmdarg, int flags, d_thread_t * p)
  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 (cmd) {
  242       case GDT_IOCTL_GENERAL:
  243         {
  244             gdt_ucmd_t *ucmd;
  245             struct gdt_softc *gdt;
  246             int lock;
  247 
  248             ucmd = (gdt_ucmd_t *)cmdarg;
  249             gdt = gdt_minor2softc(ucmd->io_node);
  250             if (gdt == NULL)
  251                 return (ENXIO);
  252             lock = splcam();
  253             TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links);
  254             ucmd->complete_flag = FALSE;
  255             splx(lock);
  256             gdt_next(gdt);
  257             if (!ucmd->complete_flag)
  258                 (void) tsleep((void *)ucmd, PCATCH | PRIBIO, "iirucw", 0);
  259             break;
  260         }
  261 
  262       case GDT_IOCTL_DRVERS:
  263         *(int *)cmdarg = 
  264             (IIR_DRIVER_VERSION << 8) | IIR_DRIVER_SUBVERSION;
  265         break;
  266 
  267       case GDT_IOCTL_CTRTYPE:
  268         {
  269             gdt_ctrt_t *p;
  270             struct gdt_softc *gdt; 
  271             
  272             p = (gdt_ctrt_t *)cmdarg;
  273             gdt = gdt_minor2softc(p->io_node);
  274             if (gdt == NULL)
  275                 return (ENXIO);
  276             p->oem_id = 0x8000;
  277             p->type = 0xfd;
  278             p->info = (gdt->sc_bus << 8) | (gdt->sc_slot << 3);
  279             p->ext_type = 0x6000 | gdt->sc_subdevice;
  280             p->device_id = gdt->sc_device;
  281             p->sub_device_id = gdt->sc_subdevice;
  282             break;
  283         }
  284 
  285       case GDT_IOCTL_OSVERS:
  286         {
  287             gdt_osv_t *p;
  288 
  289             p = (gdt_osv_t *)cmdarg;
  290             p->oscode = 10;
  291             p->version = osrelease[0] - '';
  292             if (osrelease[1] == '.')
  293                 p->subversion = osrelease[2] - '';
  294             else
  295                 p->subversion = 0;
  296             if (osrelease[3] == '.')
  297                 p->revision = osrelease[4] - '';
  298             else
  299                 p->revision = 0;
  300             strcpy(p->name, ostype);
  301             break;
  302         }
  303 
  304       case GDT_IOCTL_CTRCNT:
  305         *(int *)cmdarg = gdt_cnt;
  306         break;
  307 
  308       case GDT_IOCTL_EVENT:
  309         {
  310             gdt_event_t *p;
  311             int lock;
  312 
  313             p = (gdt_event_t *)cmdarg;
  314             if (p->erase == 0xff) {
  315                 if (p->dvr.event_source == GDT_ES_TEST)
  316                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.test);
  317                 else if (p->dvr.event_source == GDT_ES_DRIVER)
  318                     p->dvr.event_data.size= sizeof(p->dvr.event_data.eu.driver);
  319                 else if (p->dvr.event_source == GDT_ES_SYNC)
  320                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.sync);
  321                 else
  322                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.async);
  323                 lock = splcam();
  324                 gdt_store_event(p->dvr.event_source, p->dvr.event_idx,
  325                                 &p->dvr.event_data);
  326                 splx(lock);
  327             } else if (p->erase == 0xfe) {
  328                 lock = splcam();
  329                 gdt_clear_events();
  330                 splx(lock);
  331             } else if (p->erase == 0) {
  332                 p->handle = gdt_read_event(p->handle, &p->dvr);
  333             } else {
  334                 gdt_readapp_event((u_int8_t)p->erase, &p->dvr);
  335             }
  336             break;
  337         }
  338         
  339       case GDT_IOCTL_STATIST:
  340         {
  341             gdt_statist_t *p;
  342             
  343             p = (gdt_statist_t *)cmdarg;
  344             bcopy(&gdt_stat, p, sizeof(gdt_statist_t));
  345             break;
  346         }
  347 
  348       default:
  349         break;
  350     }
  351 
  352     --gdt_stat.io_count_act;
  353     return (0);
  354 }
  355 
  356 /*
  357 static void
  358 iir_drvinit(void *unused)
  359 {
  360     GDT_DPRINTF(GDT_D_DEBUG, ("iir_drvinit()\n"));
  361                 
  362     if (!iir_devsw_installed) {
  363         cdevsw_add(&iir_cdevsw);
  364         iir_devsw_installed = 1;
  365     }
  366 }
  367 
  368 SYSINIT(iir_dev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR, iir_drvinit, NULL)
  369 */

Cache object: 75e8064a4ce830296cbfd4de7d14b5e5


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