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: head/sys/dev/iir/iir_ctrl.c 326255 2017-11-27 14:52:40Z pfg $");
   45 
   46 #include <sys/param.h>
   47 #include <sys/systm.h>
   48 #include <sys/bus.h>
   49 #include <sys/endian.h>
   50 #include <sys/malloc.h>
   51 #include <sys/kernel.h>
   52 #include <sys/uio.h>
   53 #include <sys/conf.h>
   54 #include <sys/disk.h>
   55 #include <sys/stat.h>
   56 #include <sys/disklabel.h>
   57 #include <sys/sysctl.h>
   58 #include <sys/sx.h>
   59 #include <machine/bus.h>
   60 
   61 #include <dev/iir/iir.h>
   62 
   63 /* Entry points and other prototypes */
   64 static struct gdt_softc *gdt_minor2softc(struct cdev *dev, int minor_no);
   65 
   66 static d_open_t         iir_open;
   67 static d_close_t        iir_close;
   68 static d_write_t        iir_write;
   69 static d_read_t         iir_read;
   70 static d_ioctl_t        iir_ioctl;
   71 
   72 /* Normally, this is a static structure.  But we need it in pci/iir_pci.c */
   73 static struct cdevsw iir_cdevsw = {
   74         .d_version =    D_VERSION,
   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 #ifndef SDEV_PER_HBA
   84 static int sdev_made = 0;
   85 static struct sx sdev_lock;
   86 SX_SYSINIT(iir_sdev_lock, &sdev_lock, "iir sdev");
   87 #endif
   88 extern int gdt_cnt;
   89 extern gdt_statist_t gdt_stat;
   90 
   91 /*
   92  * Given a controller number,
   93  * make a special device and return the dev_t
   94  */
   95 struct cdev *
   96 gdt_make_dev(struct gdt_softc *gdt)
   97 {
   98     struct cdev *dev;
   99 
  100 #ifdef SDEV_PER_HBA
  101     dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR,
  102                    S_IRUSR | S_IWUSR, "iir%d", unit);
  103     dev->si_drv1 = gdt;
  104 #else
  105     sx_xlock(&sdev_lock);
  106     if (sdev_made)
  107         return (NULL);
  108     dev = make_dev(&iir_cdevsw, 0, UID_ROOT, GID_OPERATOR,
  109                    S_IRUSR | S_IWUSR, "iir");
  110     sdev_made = 1;
  111     sx_xunlock(&sdev_lock);
  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(struct cdev *dev, int minor_no)
  129 {
  130 #ifdef SDEV_PER_HBA
  131 
  132     return (dev->si_drv1);
  133 #else
  134     devclass_t dc;
  135     device_t child;
  136 
  137     dc = devclass_find("iir");
  138     if (dc == NULL)
  139         return (NULL);
  140     child = devclass_get_device(dc, minor_no);
  141     if (child == NULL)
  142         return (NULL);
  143     return (device_get_softc(child));
  144 #endif
  145 }
  146 
  147 static int
  148 iir_open(struct cdev *dev, int flags, int fmt, struct thread * p)
  149 {
  150     GDT_DPRINTF(GDT_D_DEBUG, ("iir_open()\n"));
  151 
  152     return (0);
  153 }
  154 
  155 static int
  156 iir_close(struct cdev *dev, int flags, int fmt, struct thread * p)
  157 {
  158     GDT_DPRINTF(GDT_D_DEBUG, ("iir_close()\n"));
  159                 
  160     return (0);
  161 }
  162 
  163 static int
  164 iir_write(struct cdev *dev, struct uio * uio, int ioflag)
  165 {
  166     GDT_DPRINTF(GDT_D_DEBUG, ("iir_write()\n"));
  167                 
  168     return (0);
  169 }
  170 
  171 static int
  172 iir_read(struct cdev *dev, struct uio * uio, int ioflag)
  173 {
  174     GDT_DPRINTF(GDT_D_DEBUG, ("iir_read()\n"));
  175                 
  176     return (0);
  177 }
  178 
  179 /**
  180  * This is the control syscall interface.
  181  * It should be binary compatible with UnixWare,
  182  * if not totally syntatically so.
  183  */
  184 
  185 static int
  186 iir_ioctl(struct cdev *dev, u_long cmd, caddr_t cmdarg, int flags, struct thread * p)
  187 {
  188     GDT_DPRINTF(GDT_D_DEBUG, ("iir_ioctl() cmd 0x%lx\n",cmd));
  189 
  190     ++gdt_stat.io_count_act;
  191     if (gdt_stat.io_count_act > gdt_stat.io_count_max)
  192         gdt_stat.io_count_max = gdt_stat.io_count_act;
  193 
  194     switch (cmd) {
  195       case GDT_IOCTL_GENERAL:
  196         {
  197             gdt_ucmd_t *ucmd;
  198             struct gdt_softc *gdt;
  199 
  200             ucmd = (gdt_ucmd_t *)cmdarg;
  201             gdt = gdt_minor2softc(dev, ucmd->io_node);
  202             if (gdt == NULL)
  203                 return (ENXIO);
  204             mtx_lock(&gdt->sc_lock);
  205             TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links);
  206             ucmd->complete_flag = FALSE;
  207             gdt_next(gdt);
  208             if (!ucmd->complete_flag)
  209                 (void) mtx_sleep(ucmd, &gdt->sc_lock, PCATCH | PRIBIO, "iirucw",
  210                     0);
  211             mtx_unlock(&gdt->sc_lock);
  212             break;
  213         }
  214 
  215       case GDT_IOCTL_DRVERS:
  216       case GDT_IOCTL_DRVERS_OLD:
  217         *(int *)cmdarg = 
  218             (IIR_DRIVER_VERSION << 8) | IIR_DRIVER_SUBVERSION;
  219         break;
  220 
  221       case GDT_IOCTL_CTRTYPE:
  222       case GDT_IOCTL_CTRTYPE_OLD:
  223         {
  224             gdt_ctrt_t *p;
  225             struct gdt_softc *gdt; 
  226             
  227             p = (gdt_ctrt_t *)cmdarg;
  228             gdt = gdt_minor2softc(dev, p->io_node);
  229             if (gdt == NULL)
  230                 return (ENXIO);
  231             /* only RP controllers */
  232             p->ext_type = 0x6000 | gdt->sc_device;
  233             if (gdt->sc_vendor == INTEL_VENDOR_ID_IIR) {
  234                 p->oem_id = OEM_ID_INTEL;
  235                 p->type = 0xfd;
  236                 /* new -> subdevice into ext_type */
  237                 if (gdt->sc_device >= 0x600)
  238                     p->ext_type = 0x6000 | gdt->sc_subdevice;
  239             } else {
  240                 p->oem_id = OEM_ID_ICP;
  241                 p->type = 0xfe;
  242                 /* new -> subdevice into ext_type */
  243                 if (gdt->sc_device >= 0x300)
  244                     p->ext_type = 0x6000 | gdt->sc_subdevice;
  245             }
  246             p->info = (gdt->sc_bus << 8) | (gdt->sc_slot << 3);
  247             p->device_id = gdt->sc_device;
  248             p->sub_device_id = gdt->sc_subdevice;
  249             break;
  250         }
  251 
  252       case GDT_IOCTL_OSVERS:
  253         {
  254             gdt_osv_t *p;
  255 
  256             p = (gdt_osv_t *)cmdarg;
  257             p->oscode = 10;
  258             p->version = osreldate / 100000;
  259             p->subversion = osreldate / 1000 % 100;
  260             p->revision = 0;
  261             strcpy(p->name, ostype);
  262             break;
  263         }
  264 
  265       case GDT_IOCTL_CTRCNT:
  266         *(int *)cmdarg = gdt_cnt;
  267         break;
  268 
  269       case GDT_IOCTL_EVENT:
  270         {
  271             gdt_event_t *p;
  272 
  273             p = (gdt_event_t *)cmdarg;
  274             if (p->erase == 0xff) {
  275                 if (p->dvr.event_source == GDT_ES_TEST)
  276                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.test);
  277                 else if (p->dvr.event_source == GDT_ES_DRIVER)
  278                     p->dvr.event_data.size= sizeof(p->dvr.event_data.eu.driver);
  279                 else if (p->dvr.event_source == GDT_ES_SYNC)
  280                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.sync);
  281                 else
  282                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.async);
  283                 gdt_store_event(p->dvr.event_source, p->dvr.event_idx,
  284                                 &p->dvr.event_data);
  285             } else if (p->erase == 0xfe) {
  286                 gdt_clear_events();
  287             } else if (p->erase == 0) {
  288                 p->handle = gdt_read_event(p->handle, &p->dvr);
  289             } else {
  290                 gdt_readapp_event((u_int8_t)p->erase, &p->dvr);
  291             }
  292             break;
  293         }
  294         
  295       case GDT_IOCTL_STATIST:
  296         {
  297             gdt_statist_t *p;
  298             
  299             p = (gdt_statist_t *)cmdarg;
  300             bcopy(&gdt_stat, p, sizeof(gdt_statist_t));
  301             break;
  302         }
  303 
  304       default:
  305         break;
  306     }
  307 
  308     --gdt_stat.io_count_act;
  309     return (0);
  310 }

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