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$");
   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 /* Normally, this is a static structure.  But we need it in pci/iir_pci.c */
   72 static struct cdevsw iir_cdevsw = {
   73         .d_version =    D_VERSION,
   74         .d_flags =      D_NEEDGIANT,
   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 };
   82 
   83 /*
   84 static int iir_devsw_installed = 0;
   85 */
   86 #ifndef SDEV_PER_HBA
   87 static int sdev_made = 0;
   88 #endif
   89 extern int gdt_cnt;
   90 extern char ostype[];
   91 extern char osrelease[];
   92 extern gdt_statist_t gdt_stat;
   93 
   94 /*
   95  * Given a controller number,
   96  * make a special device and return the dev_t
   97  */
   98 struct cdev *
   99 gdt_make_dev(int unit)
  100 {
  101     struct cdev *dev;
  102 
  103 #ifdef SDEV_PER_HBA
  104     dev = make_dev(&iir_cdevsw, hba2minor(unit), UID_ROOT, GID_OPERATOR,
  105                    S_IRUSR | S_IWUSR, "iir%d", unit);
  106 #else
  107     if (sdev_made)
  108         return (0);
  109     dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR,
  110                    S_IRUSR | S_IWUSR, "iir");
  111     sdev_made = 1;
  112 #endif
  113     return (dev);
  114 }
  115 
  116 void
  117 gdt_destroy_dev(struct cdev *dev)
  118 {
  119     if (dev != NULL)
  120         destroy_dev(dev);
  121 }
  122 
  123 /*
  124  * Given a minor device number,
  125  * return the pointer to its softc structure
  126  */
  127 static struct gdt_softc *
  128 gdt_minor2softc(int minor_no)
  129 {
  130     struct gdt_softc *gdt;
  131     int hanum;
  132 
  133 #ifdef SDEV_PER_HBA
  134     hanum = minor2hba(minor_no);
  135 #else
  136     hanum = minor_no;
  137 #endif
  138 
  139     for (gdt = TAILQ_FIRST(&gdt_softcs);
  140          gdt != NULL && gdt->sc_hanum != hanum;
  141          gdt = TAILQ_NEXT(gdt, links));
  142 
  143     return (gdt);
  144 }
  145 
  146 static int
  147 iir_open(struct cdev *dev, int flags, int fmt, d_thread_t * p)
  148 {
  149     GDT_DPRINTF(GDT_D_DEBUG, ("iir_open()\n"));
  150 
  151 #ifdef SDEV_PER_HBA
  152     int minor_no;
  153     struct gdt_softc *gdt;
  154 
  155     minor_no = minor(dev);
  156     gdt = gdt_minor2softc(minor_no);
  157     if (gdt == NULL)
  158         return (ENXIO);
  159 #endif
  160                 
  161     return (0);
  162 }
  163 
  164 static int
  165 iir_close(struct cdev *dev, int flags, int fmt, d_thread_t * p)
  166 {
  167     GDT_DPRINTF(GDT_D_DEBUG, ("iir_close()\n"));
  168                 
  169 #ifdef SDEV_PER_HBA
  170     int minor_no;
  171     struct gdt_softc *gdt;
  172 
  173     minor_no = minor(dev);
  174     gdt = gdt_minor2softc(minor_no);
  175     if (gdt == NULL)
  176         return (ENXIO);
  177 #endif
  178 
  179     return (0);
  180 }
  181 
  182 static int
  183 iir_write(struct cdev *dev, struct uio * uio, int ioflag)
  184 {
  185     GDT_DPRINTF(GDT_D_DEBUG, ("iir_write()\n"));
  186                 
  187 #ifdef SDEV_PER_HBA
  188     int minor_no;
  189     struct gdt_softc *gdt;
  190 
  191     minor_no = minor(dev);
  192     gdt = gdt_minor2softc(minor_no);
  193     if (gdt == NULL)
  194         return (ENXIO);
  195 #endif
  196 
  197     return (0);
  198 }
  199 
  200 static int
  201 iir_read(struct cdev *dev, struct uio * uio, int ioflag)
  202 {
  203     GDT_DPRINTF(GDT_D_DEBUG, ("iir_read()\n"));
  204                 
  205 #ifdef SDEV_PER_HBA
  206     int minor_no;
  207     struct gdt_softc *gdt;
  208 
  209     minor_no = minor(dev);
  210     gdt = gdt_minor2softc(minor_no);
  211     if (gdt == NULL)
  212         return (ENXIO);
  213 #endif
  214 
  215     return (0);
  216 }
  217 
  218 /**
  219  * This is the control syscall interface.
  220  * It should be binary compatible with UnixWare,
  221  * if not totally syntatically so.
  222  */
  223 
  224 static int
  225 iir_ioctl(struct cdev *dev, u_long cmd, caddr_t cmdarg, int flags, d_thread_t * p)
  226 {
  227     GDT_DPRINTF(GDT_D_DEBUG, ("iir_ioctl() cmd 0x%lx\n",cmd));
  228 
  229 #ifdef SDEV_PER_HBA
  230     int minor_no;
  231     struct gdt_softc *gdt;
  232 
  233     minor_no = minor(dev);
  234     gdt = gdt_minor2softc(minor_no);
  235     if (gdt == NULL)
  236         return (ENXIO);
  237 #endif
  238     ++gdt_stat.io_count_act;
  239     if (gdt_stat.io_count_act > gdt_stat.io_count_max)
  240         gdt_stat.io_count_max = gdt_stat.io_count_act;
  241 
  242     switch (cmd) {
  243       case GDT_IOCTL_GENERAL:
  244         {
  245             gdt_ucmd_t *ucmd;
  246             struct gdt_softc *gdt;
  247             int lock;
  248 
  249             ucmd = (gdt_ucmd_t *)cmdarg;
  250             gdt = gdt_minor2softc(ucmd->io_node);
  251             if (gdt == NULL)
  252                 return (ENXIO);
  253             lock = splcam();
  254             TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links);
  255             ucmd->complete_flag = FALSE;
  256             splx(lock);
  257             gdt_next(gdt);
  258             if (!ucmd->complete_flag)
  259                 (void) tsleep((void *)ucmd, PCATCH | PRIBIO, "iirucw", 0);
  260             break;
  261         }
  262 
  263       case GDT_IOCTL_DRVERS:
  264       case GDT_IOCTL_DRVERS_OLD:
  265         *(int *)cmdarg = 
  266             (IIR_DRIVER_VERSION << 8) | IIR_DRIVER_SUBVERSION;
  267         break;
  268 
  269       case GDT_IOCTL_CTRTYPE:
  270       case GDT_IOCTL_CTRTYPE_OLD:
  271         {
  272             gdt_ctrt_t *p;
  273             struct gdt_softc *gdt; 
  274             
  275             p = (gdt_ctrt_t *)cmdarg;
  276             gdt = gdt_minor2softc(p->io_node);
  277             if (gdt == NULL)
  278                 return (ENXIO);
  279             /* only RP controllers */
  280             p->ext_type = 0x6000 | gdt->sc_device;
  281             if (gdt->sc_vendor == INTEL_VENDOR_ID) {
  282                 p->oem_id = OEM_ID_INTEL;
  283                 p->type = 0xfd;
  284                 /* new -> subdevice into ext_type */
  285                 if (gdt->sc_device >= 0x600)
  286                     p->ext_type = 0x6000 | gdt->sc_subdevice;
  287             } else {
  288                 p->oem_id = OEM_ID_ICP;
  289                 p->type = 0xfe;
  290                 /* new -> subdevice into ext_type */
  291                 if (gdt->sc_device >= 0x300)
  292                     p->ext_type = 0x6000 | gdt->sc_subdevice;
  293             }
  294             p->info = (gdt->sc_bus << 8) | (gdt->sc_slot << 3);
  295             p->device_id = gdt->sc_device;
  296             p->sub_device_id = gdt->sc_subdevice;
  297             break;
  298         }
  299 
  300       case GDT_IOCTL_OSVERS:
  301         {
  302             gdt_osv_t *p;
  303 
  304             p = (gdt_osv_t *)cmdarg;
  305             p->oscode = 10;
  306             p->version = osrelease[0] - '';
  307             if (osrelease[1] == '.')
  308                 p->subversion = osrelease[2] - '';
  309             else
  310                 p->subversion = 0;
  311             if (osrelease[3] == '.')
  312                 p->revision = osrelease[4] - '';
  313             else
  314                 p->revision = 0;
  315             strcpy(p->name, ostype);
  316             break;
  317         }
  318 
  319       case GDT_IOCTL_CTRCNT:
  320         *(int *)cmdarg = gdt_cnt;
  321         break;
  322 
  323       case GDT_IOCTL_EVENT:
  324         {
  325             gdt_event_t *p;
  326             int lock;
  327 
  328             p = (gdt_event_t *)cmdarg;
  329             if (p->erase == 0xff) {
  330                 if (p->dvr.event_source == GDT_ES_TEST)
  331                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.test);
  332                 else if (p->dvr.event_source == GDT_ES_DRIVER)
  333                     p->dvr.event_data.size= sizeof(p->dvr.event_data.eu.driver);
  334                 else if (p->dvr.event_source == GDT_ES_SYNC)
  335                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.sync);
  336                 else
  337                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.async);
  338                 lock = splcam();
  339                 gdt_store_event(p->dvr.event_source, p->dvr.event_idx,
  340                                 &p->dvr.event_data);
  341                 splx(lock);
  342             } else if (p->erase == 0xfe) {
  343                 lock = splcam();
  344                 gdt_clear_events();
  345                 splx(lock);
  346             } else if (p->erase == 0) {
  347                 p->handle = gdt_read_event(p->handle, &p->dvr);
  348             } else {
  349                 gdt_readapp_event((u_int8_t)p->erase, &p->dvr);
  350             }
  351             break;
  352         }
  353         
  354       case GDT_IOCTL_STATIST:
  355         {
  356             gdt_statist_t *p;
  357             
  358             p = (gdt_statist_t *)cmdarg;
  359             bcopy(&gdt_stat, p, sizeof(gdt_statist_t));
  360             break;
  361         }
  362 
  363       default:
  364         break;
  365     }
  366 
  367     --gdt_stat.io_count_act;
  368     return (0);
  369 }
  370 
  371 /*
  372 static void
  373 iir_drvinit(void *unused)
  374 {
  375     GDT_DPRINTF(GDT_D_DEBUG, ("iir_drvinit()\n"));
  376                 
  377     if (!iir_devsw_installed) {
  378         cdevsw_add(&iir_cdevsw);
  379         iir_devsw_installed = 1;
  380     }
  381 }
  382 
  383 SYSINIT(iir_dev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, iir_drvinit, NULL)
  384 */

Cache object: bb9c98bc5653e76a8750054c1535ea45


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