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/raid/iir/iir_ctrl.c

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    1 /* $FreeBSD: src/sys/dev/iir/iir_ctrl.c,v 1.17 2005/05/06 02:32:34 cperciva Exp $ */
    2 /*-
    3  *       Copyright (c) 2000-03 ICP vortex GmbH
    4  *       Copyright (c) 2002-03 Intel Corporation
    5  *       Copyright (c) 2003    Adaptec Inc.
    6  *       All Rights Reserved
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions, and the following disclaimer,
   13  *    without modification, immediately at the beginning of the file.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. The name of the author may not be used to endorse or promote products
   18  *    derived from this software without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   24  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  */
   32 
   33 /*
   34  * iir_ctrl.c: Control functions and /dev entry points for /dev/iir*
   35  *
   36  * Written by: Achim Leubner <achim_leubner@adaptec.com>
   37  * Fixes/Additions: Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com>
   38  *
   39  * $Id: iir_ctrl.c 1.3 2003/08/26 12:31:15 achim Exp $"
   40  */
   41 
   42 
   43 #include <sys/param.h>
   44 #include <sys/systm.h>
   45 #include <sys/endian.h>
   46 #include <sys/malloc.h>
   47 #include <sys/kernel.h>
   48 #include <sys/uio.h>
   49 #include <sys/bus.h>
   50 #include <sys/conf.h>
   51 #include <sys/stat.h>
   52 #include <sys/device.h>
   53 #include <sys/thread2.h>
   54 
   55 #include "pcidevs.h"
   56 
   57 #include <vm/vm.h>
   58 #include <vm/vm_kern.h>
   59 #include <vm/vm_extern.h>
   60 #include <vm/pmap.h>
   61 
   62 #include "iir.h"
   63 
   64 /* Entry points and other prototypes */
   65 static struct gdt_softc *gdt_minor2softc(int minor_no);
   66 
   67 static d_open_t         iir_open;
   68 static d_close_t        iir_close;
   69 static d_write_t        iir_write;
   70 static d_read_t         iir_read;
   71 static d_ioctl_t        iir_ioctl;
   72 
   73 static struct dev_ops iir_ops = {
   74         { "iir", 0, 0 },
   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 };
   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 cdev_t
   93  */
   94 cdev_t 
   95 gdt_make_dev(int unit)
   96 {
   97     cdev_t dev;
   98 
   99 #ifdef SDEV_PER_HBA
  100     dev = make_dev(&iir_ops, 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_ops, 0, UID_ROOT, GID_OPERATOR,
  106                    S_IRUSR | S_IWUSR, "iir");
  107     sdev_made = 1;
  108 #endif
  109     reference_dev(dev);
  110     return (dev);
  111 }
  112 
  113 void
  114 gdt_destroy_dev(cdev_t dev)
  115 {
  116     if (dev != NULL)
  117         destroy_dev(dev);
  118 }
  119 
  120 /*
  121  * Given a minor device number,
  122  * return the pointer to its softc structure
  123  */
  124 static struct gdt_softc *
  125 gdt_minor2softc(int minor_no)
  126 {
  127     struct gdt_softc *gdt;
  128     int hanum;
  129 
  130 #ifdef SDEV_PER_HBA
  131     hanum = minor2hba(minor_no);
  132 #else
  133     hanum = minor_no;
  134 #endif
  135 
  136     for (gdt = TAILQ_FIRST(&gdt_softcs);
  137          gdt != NULL && gdt->sc_hanum != hanum;
  138          gdt = TAILQ_NEXT(gdt, links));
  139 
  140     return (gdt);
  141 }
  142 
  143 static int
  144 iir_open(struct dev_open_args *ap)
  145 {
  146     GDT_DPRINTF(GDT_D_DEBUG, ("iir_open()\n"));
  147 
  148 #ifdef SDEV_PER_HBA
  149     int minor_no;
  150     struct gdt_softc *gdt;
  151 
  152     minor_no = minor(dev);
  153     gdt = gdt_minor2softc(minor_no);
  154     if (gdt == NULL)
  155         return (ENXIO);
  156 #endif
  157                 
  158     return (0);
  159 }
  160 
  161 static int
  162 iir_close(struct dev_close_args *ap)
  163 {
  164     GDT_DPRINTF(GDT_D_DEBUG, ("iir_close()\n"));
  165                 
  166 #ifdef SDEV_PER_HBA
  167     int minor_no;
  168     struct gdt_softc *gdt;
  169 
  170     minor_no = minor(dev);
  171     gdt = gdt_minor2softc(minor_no);
  172     if (gdt == NULL)
  173         return (ENXIO);
  174 #endif
  175 
  176     return (0);
  177 }
  178 
  179 static int
  180 iir_write(struct dev_write_args *ap)
  181 {
  182     GDT_DPRINTF(GDT_D_DEBUG, ("iir_write()\n"));
  183                 
  184 #ifdef SDEV_PER_HBA
  185     int minor_no;
  186     struct gdt_softc *gdt;
  187 
  188     minor_no = minor(dev);
  189     gdt = gdt_minor2softc(minor_no);
  190     if (gdt == NULL)
  191         return (ENXIO);
  192 #endif
  193 
  194     return (0);
  195 }
  196 
  197 static int
  198 iir_read(struct dev_read_args *ap)
  199 {
  200     GDT_DPRINTF(GDT_D_DEBUG, ("iir_read()\n"));
  201                 
  202 #ifdef SDEV_PER_HBA
  203     int minor_no;
  204     struct gdt_softc *gdt;
  205 
  206     minor_no = minor(dev);
  207     gdt = gdt_minor2softc(minor_no);
  208     if (gdt == NULL)
  209         return (ENXIO);
  210 #endif
  211 
  212     return (0);
  213 }
  214 
  215 /**
  216  * This is the control syscall interface.
  217  * It should be binary compatible with UnixWare,
  218  * if not totally syntatically so.
  219  */
  220 
  221 static int
  222 iir_ioctl(struct dev_ioctl_args *ap)
  223 {
  224     GDT_DPRINTF(GDT_D_DEBUG, ("iir_ioctl() cmd 0x%lx\n",cmd));
  225 
  226 #ifdef SDEV_PER_HBA
  227     int minor_no;
  228     struct gdt_softc *gdt;
  229 
  230     minor_no = minor(dev);
  231     gdt = gdt_minor2softc(minor_no);
  232     if (gdt == NULL)
  233         return (ENXIO);
  234 #endif
  235     ++gdt_stat.io_count_act;
  236     if (gdt_stat.io_count_act > gdt_stat.io_count_max)
  237         gdt_stat.io_count_max = gdt_stat.io_count_act;
  238 
  239     switch (ap->a_cmd) {
  240       case GDT_IOCTL_GENERAL:
  241         {
  242             gdt_ucmd_t *ucmd;
  243             struct gdt_softc *gdt;
  244 
  245             ucmd = (gdt_ucmd_t *)ap->a_data;
  246             gdt = gdt_minor2softc(ucmd->io_node);
  247             if (gdt == NULL)
  248                 return (ENXIO);
  249             crit_enter();
  250             TAILQ_INSERT_TAIL(&gdt->sc_ucmd_queue, ucmd, links);
  251             ucmd->complete_flag = FALSE;
  252             crit_exit();
  253             gdt_next(gdt);
  254             if (!ucmd->complete_flag)
  255                 (void) tsleep((void *)ucmd, PCATCH, "iirucw", 0);
  256             break;
  257         }
  258 
  259       case GDT_IOCTL_DRVERS:
  260       case GDT_IOCTL_DRVERS_OLD:
  261         *(int *)ap->a_data = 
  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 *)ap->a_data;
  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 == PCI_VENDOR_INTEL) {
  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 *)ap->a_data;
  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 *)ap->a_data = gdt_cnt;
  317         break;
  318 
  319       case GDT_IOCTL_EVENT:
  320         {
  321             gdt_event_t *p;
  322 
  323             p = (gdt_event_t *)ap->a_data;
  324             if (p->erase == 0xff) {
  325                 if (p->dvr.event_source == GDT_ES_TEST)
  326                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.test);
  327                 else if (p->dvr.event_source == GDT_ES_DRIVER)
  328                     p->dvr.event_data.size= sizeof(p->dvr.event_data.eu.driver);
  329                 else if (p->dvr.event_source == GDT_ES_SYNC)
  330                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.sync);
  331                 else
  332                     p->dvr.event_data.size = sizeof(p->dvr.event_data.eu.async);
  333                 crit_enter();
  334                 gdt_store_event(p->dvr.event_source, p->dvr.event_idx,
  335                                 &p->dvr.event_data);
  336                 crit_exit();
  337             } else if (p->erase == 0xfe) {
  338                 crit_enter();
  339                 gdt_clear_events();
  340                 crit_exit();
  341             } else if (p->erase == 0) {
  342                 p->handle = gdt_read_event(p->handle, &p->dvr);
  343             } else {
  344                 gdt_readapp_event((u_int8_t)p->erase, &p->dvr);
  345             }
  346             break;
  347         }
  348         
  349       case GDT_IOCTL_STATIST:
  350         {
  351             gdt_statist_t *p;
  352             
  353             p = (gdt_statist_t *)ap->a_data;
  354             bcopy(&gdt_stat, p, sizeof(gdt_statist_t));
  355             break;
  356         }
  357 
  358       default:
  359         break;
  360     }
  361 
  362     --gdt_stat.io_count_act;
  363     return (0);
  364 }
  365 

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