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/5.2/sys/dev/iir/iir_ctrl.c 120477 2003-09-26 15:36:47Z scottl $");
   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 #include <vm/vm.h>
   56 #include <vm/vm_kern.h>
   57 #include <vm/vm_extern.h>
   58 #include <vm/pmap.h>
   59 
   60 #include <dev/iir/iir.h>
   61 
   62 /* Entry points and other prototypes */
   63 static struct gdt_softc *gdt_minor2softc(int minor_no);
   64 
   65 static d_open_t         iir_open;
   66 static d_close_t        iir_close;
   67 static d_write_t        iir_write;
   68 static d_read_t         iir_read;
   69 static d_ioctl_t        iir_ioctl;
   70 
   71 #define CDEV_MAJOR          IIR_CDEV_MAJOR
   72 
   73 /* Normally, this is a static structure.  But we need it in pci/iir_pci.c */
   74 static struct cdevsw iir_cdevsw = {
   75         .d_open =       iir_open,
   76         .d_close =      iir_close,
   77         .d_read =       iir_read,
   78         .d_write =      iir_write,
   79         .d_ioctl =      iir_ioctl,
   80         .d_name =       "iir",
   81         .d_maj =        CDEV_MAJOR,
   82 };
   83 
   84 /*
   85 static int iir_devsw_installed = 0;
   86 */
   87 #ifndef SDEV_PER_HBA
   88 static int sdev_made = 0;
   89 #endif
   90 extern int gdt_cnt;
   91 extern char ostype[];
   92 extern char osrelease[];
   93 extern gdt_statist_t gdt_stat;
   94 
   95 /*
   96  * Given a controller number,
   97  * make a special device and return the dev_t
   98  */
   99 dev_t 
  100 gdt_make_dev(int unit)
  101 {
  102     dev_t dev;
  103 
  104 #ifdef SDEV_PER_HBA
  105     dev = make_dev(&iir_cdevsw, hba2minor(unit), UID_ROOT, GID_OPERATOR,
  106                    S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH, "iir%d", unit);
  107 #else
  108     if (sdev_made)
  109         return (0);
  110     dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR,
  111                    S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH, "iir");
  112     sdev_made = 1;
  113 #endif
  114     return (dev);
  115 }
  116 
  117 void
  118 gdt_destroy_dev(dev_t dev)
  119 {
  120     if (dev != NULL)
  121         destroy_dev(dev);
  122 }
  123 
  124 /*
  125  * Given a minor device number,
  126  * return the pointer to its softc structure
  127  */
  128 static struct gdt_softc *
  129 gdt_minor2softc(int minor_no)
  130 {
  131     struct gdt_softc *gdt;
  132     int hanum;
  133 
  134 #ifdef SDEV_PER_HBA
  135     hanum = minor2hba(minor_no);
  136 #else
  137     hanum = minor_no;
  138 #endif
  139 
  140     for (gdt = TAILQ_FIRST(&gdt_softcs);
  141          gdt != NULL && gdt->sc_hanum != hanum;
  142          gdt = TAILQ_NEXT(gdt, links));
  143 
  144     return (gdt);
  145 }
  146 
  147 static int
  148 iir_open(dev_t dev, int flags, int fmt, d_thread_t * p)
  149 {
  150     GDT_DPRINTF(GDT_D_DEBUG, ("iir_open()\n"));
  151 
  152 #ifdef SDEV_PER_HBA
  153     int minor_no;
  154     struct gdt_softc *gdt;
  155 
  156     minor_no = minor(dev);
  157     gdt = gdt_minor2softc(minor_no);
  158     if (gdt == NULL)
  159         return (ENXIO);
  160 #endif
  161                 
  162     return (0);
  163 }
  164 
  165 static int
  166 iir_close(dev_t dev, int flags, int fmt, d_thread_t * p)
  167 {
  168     GDT_DPRINTF(GDT_D_DEBUG, ("iir_close()\n"));
  169                 
  170 #ifdef SDEV_PER_HBA
  171     int minor_no;
  172     struct gdt_softc *gdt;
  173 
  174     minor_no = minor(dev);
  175     gdt = gdt_minor2softc(minor_no);
  176     if (gdt == NULL)
  177         return (ENXIO);
  178 #endif
  179 
  180     return (0);
  181 }
  182 
  183 static int
  184 iir_write(dev_t dev, struct uio * uio, int ioflag)
  185 {
  186     GDT_DPRINTF(GDT_D_DEBUG, ("iir_write()\n"));
  187                 
  188 #ifdef SDEV_PER_HBA
  189     int minor_no;
  190     struct gdt_softc *gdt;
  191 
  192     minor_no = minor(dev);
  193     gdt = gdt_minor2softc(minor_no);
  194     if (gdt == NULL)
  195         return (ENXIO);
  196 #endif
  197 
  198     return (0);
  199 }
  200 
  201 static int
  202 iir_read(dev_t dev, struct uio * uio, int ioflag)
  203 {
  204     GDT_DPRINTF(GDT_D_DEBUG, ("iir_read()\n"));
  205                 
  206 #ifdef SDEV_PER_HBA
  207     int minor_no;
  208     struct gdt_softc *gdt;
  209 
  210     minor_no = minor(dev);
  211     gdt = gdt_minor2softc(minor_no);
  212     if (gdt == NULL)
  213         return (ENXIO);
  214 #endif
  215 
  216     return (0);
  217 }
  218 
  219 /**
  220  * This is the control syscall interface.
  221  * It should be binary compatible with UnixWare,
  222  * if not totally syntatically so.
  223  */
  224 
  225 static int
  226 iir_ioctl(dev_t dev, u_long cmd, caddr_t cmdarg, int flags, d_thread_t * p)
  227 {
  228     GDT_DPRINTF(GDT_D_DEBUG, ("iir_ioctl() cmd 0x%lx\n",cmd));
  229 
  230 #ifdef SDEV_PER_HBA
  231     int minor_no;
  232     struct gdt_softc *gdt;
  233 
  234     minor_no = minor(dev);
  235     gdt = gdt_minor2softc(minor_no);
  236     if (gdt == NULL)
  237         return (ENXIO);
  238 #endif
  239     ++gdt_stat.io_count_act;
  240     if (gdt_stat.io_count_act > gdt_stat.io_count_max)
  241         gdt_stat.io_count_max = gdt_stat.io_count_act;
  242 
  243     switch (cmd) {
  244       case GDT_IOCTL_GENERAL:
  245         {
  246             gdt_ucmd_t *ucmd;
  247             struct gdt_softc *gdt;
  248             int lock;
  249 
  250             ucmd = (gdt_ucmd_t *)cmdarg;
  251             gdt = gdt_minor2softc(ucmd->io_node);
  252             if (gdt == NULL)
  253                 return (ENXIO);
  254             lock = splcam();
  255             TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links);
  256             ucmd->complete_flag = FALSE;
  257             splx(lock);
  258             gdt_next(gdt);
  259             if (!ucmd->complete_flag)
  260                 (void) tsleep((void *)ucmd, PCATCH | PRIBIO, "iirucw", 0);
  261             break;
  262         }
  263 
  264       case GDT_IOCTL_DRVERS:
  265         *(int *)cmdarg = 
  266             (IIR_DRIVER_VERSION << 8) | IIR_DRIVER_SUBVERSION;
  267         break;
  268 
  269       case GDT_IOCTL_CTRTYPE:
  270         {
  271             gdt_ctrt_t *p;
  272             struct gdt_softc *gdt; 
  273             
  274             p = (gdt_ctrt_t *)cmdarg;
  275             gdt = gdt_minor2softc(p->io_node);
  276             if (gdt == NULL)
  277                 return (ENXIO);
  278             /* only RP controllers */
  279             p->ext_type = 0x6000 | gdt->sc_device;
  280             if (gdt->sc_vendor == INTEL_VENDOR_ID) {
  281                 p->oem_id = OEM_ID_INTEL;
  282                 p->type = 0xfd;
  283                 /* new -> subdevice into ext_type */
  284                 if (gdt->sc_device >= 0x600)
  285                     p->ext_type = 0x6000 | gdt->sc_subdevice;
  286             } else {
  287                 p->oem_id = OEM_ID_ICP;
  288                 p->type = 0xfe;
  289                 /* new -> subdevice into ext_type */
  290                 if (gdt->sc_device >= 0x300)
  291                     p->ext_type = 0x6000 | gdt->sc_subdevice;
  292             }
  293             p->info = (gdt->sc_bus << 8) | (gdt->sc_slot << 3);
  294             p->device_id = gdt->sc_device;
  295             p->sub_device_id = gdt->sc_subdevice;
  296             break;
  297         }
  298 
  299       case GDT_IOCTL_OSVERS:
  300         {
  301             gdt_osv_t *p;
  302 
  303             p = (gdt_osv_t *)cmdarg;
  304             p->oscode = 10;
  305             p->version = osrelease[0] - '';
  306             if (osrelease[1] == '.')
  307                 p->subversion = osrelease[2] - '';
  308             else
  309                 p->subversion = 0;
  310             if (osrelease[3] == '.')
  311                 p->revision = osrelease[4] - '';
  312             else
  313                 p->revision = 0;
  314             strcpy(p->name, ostype);
  315             break;
  316         }
  317 
  318       case GDT_IOCTL_CTRCNT:
  319         *(int *)cmdarg = gdt_cnt;
  320         break;
  321 
  322       case GDT_IOCTL_EVENT:
  323         {
  324             gdt_event_t *p;
  325             int lock;
  326 
  327             p = (gdt_event_t *)cmdarg;
  328             if (p->erase == 0xff) {
  329                 if (p->dvr.event_source == GDT_ES_TEST)
  330                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.test);
  331                 else if (p->dvr.event_source == GDT_ES_DRIVER)
  332                     p->dvr.event_data.size= sizeof(p->dvr.event_data.eu.driver);
  333                 else if (p->dvr.event_source == GDT_ES_SYNC)
  334                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.sync);
  335                 else
  336                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.async);
  337                 lock = splcam();
  338                 gdt_store_event(p->dvr.event_source, p->dvr.event_idx,
  339                                 &p->dvr.event_data);
  340                 splx(lock);
  341             } else if (p->erase == 0xfe) {
  342                 lock = splcam();
  343                 gdt_clear_events();
  344                 splx(lock);
  345             } else if (p->erase == 0) {
  346                 p->handle = gdt_read_event(p->handle, &p->dvr);
  347             } else {
  348                 gdt_readapp_event((u_int8_t)p->erase, &p->dvr);
  349             }
  350             break;
  351         }
  352         
  353       case GDT_IOCTL_STATIST:
  354         {
  355             gdt_statist_t *p;
  356             
  357             p = (gdt_statist_t *)cmdarg;
  358             bcopy(&gdt_stat, p, sizeof(gdt_statist_t));
  359             break;
  360         }
  361 
  362       default:
  363         break;
  364     }
  365 
  366     --gdt_stat.io_count_act;
  367     return (0);
  368 }
  369 
  370 /*
  371 static void
  372 iir_drvinit(void *unused)
  373 {
  374     GDT_DPRINTF(GDT_D_DEBUG, ("iir_drvinit()\n"));
  375                 
  376     if (!iir_devsw_installed) {
  377         cdevsw_add(&iir_cdevsw);
  378         iir_devsw_installed = 1;
  379     }
  380 }
  381 
  382 SYSINIT(iir_dev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE + CDEV_MAJOR, iir_drvinit, NULL)
  383 */

Cache object: 06136ae41165653c24e82bbff3a25131


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