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  * SPDX-License-Identifier: BSD-3-Clause
    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 $"
   41  */
   42 
   43 #include <sys/cdefs.h>
   44 __FBSDID("$FreeBSD$");
   45 
   46 #include <sys/param.h>
   47 #include <sys/systm.h>
   48 #include <sys/bus.h>
   49 #include <sys/conf.h>
   50 #include <sys/disk.h>
   51 #include <sys/disklabel.h>
   52 #include <sys/endian.h>
   53 #include <sys/kernel.h>
   54 #include <sys/lock.h>
   55 #include <sys/malloc.h>
   56 #include <sys/mutex.h>
   57 #include <sys/stat.h>
   58 #include <sys/sysctl.h>
   59 #include <sys/sx.h>
   60 #include <sys/uio.h>
   61 #include <machine/bus.h>
   62 
   63 #include <dev/iir/iir.h>
   64 
   65 /* Entry points and other prototypes */
   66 static struct gdt_softc *gdt_minor2softc(struct cdev *dev, int minor_no);
   67 
   68 static d_open_t         iir_open;
   69 static d_close_t        iir_close;
   70 static d_write_t        iir_write;
   71 static d_read_t         iir_read;
   72 static d_ioctl_t        iir_ioctl;
   73 
   74 /* Normally, this is a static structure.  But we need it in pci/iir_pci.c */
   75 static struct cdevsw iir_cdevsw = {
   76         .d_version =    D_VERSION,
   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         .d_name =       "iir",
   83 };
   84 
   85 #ifndef SDEV_PER_HBA
   86 static int sdev_made = 0;
   87 static struct sx sdev_lock;
   88 SX_SYSINIT(iir_sdev_lock, &sdev_lock, "iir sdev");
   89 #endif
   90 extern int gdt_cnt;
   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 struct cdev *
   98 gdt_make_dev(struct gdt_softc *gdt)
   99 {
  100     struct cdev *dev;
  101 
  102 #ifdef SDEV_PER_HBA
  103     dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR,
  104                    S_IRUSR | S_IWUSR, "iir%d", unit);
  105     dev->si_drv1 = gdt;
  106 #else
  107     sx_xlock(&sdev_lock);
  108     if (sdev_made)
  109         return (NULL);
  110     dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR,
  111                    S_IRUSR | S_IWUSR, "iir");
  112     sdev_made = 1;
  113     sx_xunlock(&sdev_lock);
  114 #endif
  115     return (dev);
  116 }
  117 
  118 void
  119 gdt_destroy_dev(struct cdev *dev)
  120 {
  121     if (dev != NULL)
  122         destroy_dev(dev);
  123 }
  124 
  125 /*
  126  * Given a minor device number,
  127  * return the pointer to its softc structure
  128  */
  129 static struct gdt_softc *
  130 gdt_minor2softc(struct cdev *dev, int minor_no)
  131 {
  132 #ifdef SDEV_PER_HBA
  133 
  134     return (dev->si_drv1);
  135 #else
  136     devclass_t dc;
  137     device_t child;
  138 
  139     dc = devclass_find("iir");
  140     if (dc == NULL)
  141         return (NULL);
  142     child = devclass_get_device(dc, minor_no);
  143     if (child == NULL)
  144         return (NULL);
  145     return (device_get_softc(child));
  146 #endif
  147 }
  148 
  149 static int
  150 iir_open(struct cdev *dev, int flags, int fmt, struct thread * p)
  151 {
  152     GDT_DPRINTF(GDT_D_DEBUG, ("iir_open()\n"));
  153 
  154     return (0);
  155 }
  156 
  157 static int
  158 iir_close(struct cdev *dev, int flags, int fmt, struct thread * p)
  159 {
  160     GDT_DPRINTF(GDT_D_DEBUG, ("iir_close()\n"));
  161                 
  162     return (0);
  163 }
  164 
  165 static int
  166 iir_write(struct cdev *dev, struct uio * uio, int ioflag)
  167 {
  168     GDT_DPRINTF(GDT_D_DEBUG, ("iir_write()\n"));
  169                 
  170     return (0);
  171 }
  172 
  173 static int
  174 iir_read(struct cdev *dev, struct uio * uio, int ioflag)
  175 {
  176     GDT_DPRINTF(GDT_D_DEBUG, ("iir_read()\n"));
  177                 
  178     return (0);
  179 }
  180 
  181 /**
  182  * This is the control syscall interface.
  183  * It should be binary compatible with UnixWare,
  184  * if not totally syntatically so.
  185  */
  186 
  187 static int
  188 iir_ioctl(struct cdev *dev, u_long cmd, caddr_t cmdarg, int flags, struct thread * p)
  189 {
  190     GDT_DPRINTF(GDT_D_DEBUG, ("iir_ioctl() cmd 0x%lx\n",cmd));
  191 
  192     ++gdt_stat.io_count_act;
  193     if (gdt_stat.io_count_act > gdt_stat.io_count_max)
  194         gdt_stat.io_count_max = gdt_stat.io_count_act;
  195 
  196     switch (cmd) {
  197       case GDT_IOCTL_GENERAL:
  198         {
  199             gdt_ucmd_t *ucmd;
  200             struct gdt_softc *gdt;
  201 
  202             ucmd = (gdt_ucmd_t *)cmdarg;
  203             gdt = gdt_minor2softc(dev, ucmd->io_node);
  204             if (gdt == NULL)
  205                 return (ENXIO);
  206             mtx_lock(&gdt->sc_lock);
  207             TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links);
  208             ucmd->complete_flag = FALSE;
  209             gdt_next(gdt);
  210             if (!ucmd->complete_flag)
  211                 (void) mtx_sleep(ucmd, &gdt->sc_lock, PCATCH | PRIBIO, "iirucw",
  212                     0);
  213             mtx_unlock(&gdt->sc_lock);
  214             break;
  215         }
  216 
  217       case GDT_IOCTL_DRVERS:
  218       case GDT_IOCTL_DRVERS_OLD:
  219         *(int *)cmdarg = 
  220             (IIR_DRIVER_VERSION << 8) | IIR_DRIVER_SUBVERSION;
  221         break;
  222 
  223       case GDT_IOCTL_CTRTYPE:
  224       case GDT_IOCTL_CTRTYPE_OLD:
  225         {
  226             gdt_ctrt_t *p;
  227             struct gdt_softc *gdt; 
  228             
  229             p = (gdt_ctrt_t *)cmdarg;
  230             gdt = gdt_minor2softc(dev, p->io_node);
  231             if (gdt == NULL)
  232                 return (ENXIO);
  233             /* only RP controllers */
  234             p->ext_type = 0x6000 | gdt->sc_device;
  235             if (gdt->sc_vendor == INTEL_VENDOR_ID_IIR) {
  236                 p->oem_id = OEM_ID_INTEL;
  237                 p->type = 0xfd;
  238                 /* new -> subdevice into ext_type */
  239                 if (gdt->sc_device >= 0x600)
  240                     p->ext_type = 0x6000 | gdt->sc_subdevice;
  241             } else {
  242                 p->oem_id = OEM_ID_ICP;
  243                 p->type = 0xfe;
  244                 /* new -> subdevice into ext_type */
  245                 if (gdt->sc_device >= 0x300)
  246                     p->ext_type = 0x6000 | gdt->sc_subdevice;
  247             }
  248             p->info = (gdt->sc_bus << 8) | (gdt->sc_slot << 3);
  249             p->device_id = gdt->sc_device;
  250             p->sub_device_id = gdt->sc_subdevice;
  251             break;
  252         }
  253 
  254       case GDT_IOCTL_OSVERS:
  255         {
  256             gdt_osv_t *p;
  257 
  258             p = (gdt_osv_t *)cmdarg;
  259             p->oscode = 10;
  260             p->version = osreldate / 100000;
  261             p->subversion = osreldate / 1000 % 100;
  262             p->revision = 0;
  263             strcpy(p->name, ostype);
  264             break;
  265         }
  266 
  267       case GDT_IOCTL_CTRCNT:
  268         *(int *)cmdarg = gdt_cnt;
  269         break;
  270 
  271       case GDT_IOCTL_EVENT:
  272         {
  273             gdt_event_t *p;
  274 
  275             p = (gdt_event_t *)cmdarg;
  276             if (p->erase == 0xff) {
  277                 if (p->dvr.event_source == GDT_ES_TEST)
  278                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.test);
  279                 else if (p->dvr.event_source == GDT_ES_DRIVER)
  280                     p->dvr.event_data.size= sizeof(p->dvr.event_data.eu.driver);
  281                 else if (p->dvr.event_source == GDT_ES_SYNC)
  282                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.sync);
  283                 else
  284                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.async);
  285                 gdt_store_event(p->dvr.event_source, p->dvr.event_idx,
  286                                 &p->dvr.event_data);
  287             } else if (p->erase == 0xfe) {
  288                 gdt_clear_events();
  289             } else if (p->erase == 0) {
  290                 p->handle = gdt_read_event(p->handle, &p->dvr);
  291             } else {
  292                 gdt_readapp_event((u_int8_t)p->erase, &p->dvr);
  293             }
  294             break;
  295         }
  296         
  297       case GDT_IOCTL_STATIST:
  298         {
  299             gdt_statist_t *p;
  300             
  301             p = (gdt_statist_t *)cmdarg;
  302             bcopy(&gdt_stat, p, sizeof(gdt_statist_t));
  303             break;
  304         }
  305 
  306       default:
  307         break;
  308     }
  309 
  310     --gdt_stat.io_count_act;
  311     return (0);
  312 }

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