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 /*-
    2  *       Copyright (c) 2000-03 ICP vortex GmbH
    3  *       Copyright (c) 2002-03 Intel Corporation
    4  *       Copyright (c) 2003    Adaptec Inc.
    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@adaptec.com>
   36  * Fixes/Additions: Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com>
   37  *
   38  * $Id: iir_ctrl.c 1.3 2003/08/26 12:31:15 achim Exp $"
   39  */
   40 
   41 #include <sys/cdefs.h>
   42 __FBSDID("$FreeBSD: releng/8.0/sys/dev/iir/iir_ctrl.c 193396 2009-06-03 20:25:13Z jhb $");
   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/conf.h>
   51 #include <sys/disk.h>
   52 #include <sys/stat.h>
   53 #include <sys/disklabel.h>
   54 #include <machine/bus.h>
   55 
   56 #include <dev/iir/iir.h>
   57 
   58 /* Entry points and other prototypes */
   59 static struct gdt_softc *gdt_minor2softc(int minor_no);
   60 
   61 static d_open_t         iir_open;
   62 static d_close_t        iir_close;
   63 static d_write_t        iir_write;
   64 static d_read_t         iir_read;
   65 static d_ioctl_t        iir_ioctl;
   66 
   67 /* Normally, this is a static structure.  But we need it in pci/iir_pci.c */
   68 static struct cdevsw iir_cdevsw = {
   69         .d_version =    D_VERSION,
   70         .d_flags =      D_NEEDGIANT,
   71         .d_open =       iir_open,
   72         .d_close =      iir_close,
   73         .d_read =       iir_read,
   74         .d_write =      iir_write,
   75         .d_ioctl =      iir_ioctl,
   76         .d_name =       "iir",
   77 };
   78 
   79 /*
   80 static int iir_devsw_installed = 0;
   81 */
   82 #ifndef SDEV_PER_HBA
   83 static int sdev_made = 0;
   84 #endif
   85 extern int gdt_cnt;
   86 extern char ostype[];
   87 extern char osrelease[];
   88 extern gdt_statist_t gdt_stat;
   89 
   90 /*
   91  * Given a controller number,
   92  * make a special device and return the dev_t
   93  */
   94 struct cdev *
   95 gdt_make_dev(int unit)
   96 {
   97     struct cdev *dev;
   98 
   99 #ifdef SDEV_PER_HBA
  100     dev = make_dev(&iir_cdevsw, hba2minor(unit), UID_ROOT, GID_OPERATOR,
  101                    S_IRUSR | S_IWUSR, "iir%d", unit);
  102 #else
  103     if (sdev_made)
  104         return (0);
  105     dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR,
  106                    S_IRUSR | S_IWUSR, "iir");
  107     sdev_made = 1;
  108 #endif
  109     return (dev);
  110 }
  111 
  112 void
  113 gdt_destroy_dev(struct cdev *dev)
  114 {
  115     if (dev != NULL)
  116         destroy_dev(dev);
  117 }
  118 
  119 /*
  120  * Given a minor device number,
  121  * return the pointer to its softc structure
  122  */
  123 static struct gdt_softc *
  124 gdt_minor2softc(int minor_no)
  125 {
  126     struct gdt_softc *gdt;
  127     int hanum;
  128 
  129 #ifdef SDEV_PER_HBA
  130     hanum = minor2hba(minor_no);
  131 #else
  132     hanum = minor_no;
  133 #endif
  134 
  135     for (gdt = TAILQ_FIRST(&gdt_softcs);
  136          gdt != NULL && gdt->sc_hanum != hanum;
  137          gdt = TAILQ_NEXT(gdt, links));
  138 
  139     return (gdt);
  140 }
  141 
  142 static int
  143 iir_open(struct cdev *dev, int flags, int fmt, struct thread * p)
  144 {
  145     GDT_DPRINTF(GDT_D_DEBUG, ("iir_open()\n"));
  146 
  147 #ifdef SDEV_PER_HBA
  148     int minor_no;
  149     struct gdt_softc *gdt;
  150 
  151     minor_no = dev2unit(dev);
  152     gdt = gdt_minor2softc(minor_no);
  153     if (gdt == NULL)
  154         return (ENXIO);
  155 #endif
  156                 
  157     return (0);
  158 }
  159 
  160 static int
  161 iir_close(struct cdev *dev, int flags, int fmt, struct thread * p)
  162 {
  163     GDT_DPRINTF(GDT_D_DEBUG, ("iir_close()\n"));
  164                 
  165 #ifdef SDEV_PER_HBA
  166     int minor_no;
  167     struct gdt_softc *gdt;
  168 
  169     minor_no = dev2unit(dev);
  170     gdt = gdt_minor2softc(minor_no);
  171     if (gdt == NULL)
  172         return (ENXIO);
  173 #endif
  174 
  175     return (0);
  176 }
  177 
  178 static int
  179 iir_write(struct cdev *dev, struct uio * uio, int ioflag)
  180 {
  181     GDT_DPRINTF(GDT_D_DEBUG, ("iir_write()\n"));
  182                 
  183 #ifdef SDEV_PER_HBA
  184     int minor_no;
  185     struct gdt_softc *gdt;
  186 
  187     minor_no = dev2unit(dev);
  188     gdt = gdt_minor2softc(minor_no);
  189     if (gdt == NULL)
  190         return (ENXIO);
  191 #endif
  192 
  193     return (0);
  194 }
  195 
  196 static int
  197 iir_read(struct cdev *dev, struct uio * uio, int ioflag)
  198 {
  199     GDT_DPRINTF(GDT_D_DEBUG, ("iir_read()\n"));
  200                 
  201 #ifdef SDEV_PER_HBA
  202     int minor_no;
  203     struct gdt_softc *gdt;
  204 
  205     minor_no = dev2unit(dev);
  206     gdt = gdt_minor2softc(minor_no);
  207     if (gdt == NULL)
  208         return (ENXIO);
  209 #endif
  210 
  211     return (0);
  212 }
  213 
  214 /**
  215  * This is the control syscall interface.
  216  * It should be binary compatible with UnixWare,
  217  * if not totally syntatically so.
  218  */
  219 
  220 static int
  221 iir_ioctl(struct cdev *dev, u_long cmd, caddr_t cmdarg, int flags, struct thread * p)
  222 {
  223     GDT_DPRINTF(GDT_D_DEBUG, ("iir_ioctl() cmd 0x%lx\n",cmd));
  224 
  225 #ifdef SDEV_PER_HBA
  226     int minor_no;
  227     struct gdt_softc *gdt;
  228 
  229     minor_no = dev2unit(dev);
  230     gdt = gdt_minor2softc(minor_no);
  231     if (gdt == NULL)
  232         return (ENXIO);
  233 #endif
  234     ++gdt_stat.io_count_act;
  235     if (gdt_stat.io_count_act > gdt_stat.io_count_max)
  236         gdt_stat.io_count_max = gdt_stat.io_count_act;
  237 
  238     switch (cmd) {
  239       case GDT_IOCTL_GENERAL:
  240         {
  241             gdt_ucmd_t *ucmd;
  242             struct gdt_softc *gdt;
  243             int lock;
  244 
  245             ucmd = (gdt_ucmd_t *)cmdarg;
  246             gdt = gdt_minor2softc(ucmd->io_node);
  247             if (gdt == NULL)
  248                 return (ENXIO);
  249             lock = splcam();
  250             TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links);
  251             ucmd->complete_flag = FALSE;
  252             splx(lock);
  253             gdt_next(gdt);
  254             if (!ucmd->complete_flag)
  255                 (void) tsleep((void *)ucmd, PCATCH | PRIBIO, "iirucw", 0);
  256             break;
  257         }
  258 
  259       case GDT_IOCTL_DRVERS:
  260       case GDT_IOCTL_DRVERS_OLD:
  261         *(int *)cmdarg = 
  262             (IIR_DRIVER_VERSION << 8) | IIR_DRIVER_SUBVERSION;
  263         break;
  264 
  265       case GDT_IOCTL_CTRTYPE:
  266       case GDT_IOCTL_CTRTYPE_OLD:
  267         {
  268             gdt_ctrt_t *p;
  269             struct gdt_softc *gdt; 
  270             
  271             p = (gdt_ctrt_t *)cmdarg;
  272             gdt = gdt_minor2softc(p->io_node);
  273             if (gdt == NULL)
  274                 return (ENXIO);
  275             /* only RP controllers */
  276             p->ext_type = 0x6000 | gdt->sc_device;
  277             if (gdt->sc_vendor == INTEL_VENDOR_ID) {
  278                 p->oem_id = OEM_ID_INTEL;
  279                 p->type = 0xfd;
  280                 /* new -> subdevice into ext_type */
  281                 if (gdt->sc_device >= 0x600)
  282                     p->ext_type = 0x6000 | gdt->sc_subdevice;
  283             } else {
  284                 p->oem_id = OEM_ID_ICP;
  285                 p->type = 0xfe;
  286                 /* new -> subdevice into ext_type */
  287                 if (gdt->sc_device >= 0x300)
  288                     p->ext_type = 0x6000 | gdt->sc_subdevice;
  289             }
  290             p->info = (gdt->sc_bus << 8) | (gdt->sc_slot << 3);
  291             p->device_id = gdt->sc_device;
  292             p->sub_device_id = gdt->sc_subdevice;
  293             break;
  294         }
  295 
  296       case GDT_IOCTL_OSVERS:
  297         {
  298             gdt_osv_t *p;
  299 
  300             p = (gdt_osv_t *)cmdarg;
  301             p->oscode = 10;
  302             p->version = osrelease[0] - '';
  303             if (osrelease[1] == '.')
  304                 p->subversion = osrelease[2] - '';
  305             else
  306                 p->subversion = 0;
  307             if (osrelease[3] == '.')
  308                 p->revision = osrelease[4] - '';
  309             else
  310                 p->revision = 0;
  311             strcpy(p->name, ostype);
  312             break;
  313         }
  314 
  315       case GDT_IOCTL_CTRCNT:
  316         *(int *)cmdarg = gdt_cnt;
  317         break;
  318 
  319       case GDT_IOCTL_EVENT:
  320         {
  321             gdt_event_t *p;
  322             int lock;
  323 
  324             p = (gdt_event_t *)cmdarg;
  325             if (p->erase == 0xff) {
  326                 if (p->dvr.event_source == GDT_ES_TEST)
  327                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.test);
  328                 else if (p->dvr.event_source == GDT_ES_DRIVER)
  329                     p->dvr.event_data.size= sizeof(p->dvr.event_data.eu.driver);
  330                 else if (p->dvr.event_source == GDT_ES_SYNC)
  331                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.sync);
  332                 else
  333                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.async);
  334                 lock = splcam();
  335                 gdt_store_event(p->dvr.event_source, p->dvr.event_idx,
  336                                 &p->dvr.event_data);
  337                 splx(lock);
  338             } else if (p->erase == 0xfe) {
  339                 lock = splcam();
  340                 gdt_clear_events();
  341                 splx(lock);
  342             } else if (p->erase == 0) {
  343                 p->handle = gdt_read_event(p->handle, &p->dvr);
  344             } else {
  345                 gdt_readapp_event((u_int8_t)p->erase, &p->dvr);
  346             }
  347             break;
  348         }
  349         
  350       case GDT_IOCTL_STATIST:
  351         {
  352             gdt_statist_t *p;
  353             
  354             p = (gdt_statist_t *)cmdarg;
  355             bcopy(&gdt_stat, p, sizeof(gdt_statist_t));
  356             break;
  357         }
  358 
  359       default:
  360         break;
  361     }
  362 
  363     --gdt_stat.io_count_act;
  364     return (0);
  365 }
  366 
  367 /*
  368 static void
  369 iir_drvinit(void *unused)
  370 {
  371     GDT_DPRINTF(GDT_D_DEBUG, ("iir_drvinit()\n"));
  372                 
  373     if (!iir_devsw_installed) {
  374         cdevsw_add(&iir_cdevsw);
  375         iir_devsw_installed = 1;
  376     }
  377 }
  378 
  379 SYSINIT(iir_dev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, iir_drvinit, NULL)
  380 */

Cache object: d83bba3232281f1851a9eda0127ce79b


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