lincan/src/modparms.c

   1 /* mod_parms.c
   2  * Linux CAN-bus device driver.
   3  * Written by Arnaud Westenberg email:arnaud@wanadoo.nl
   4  * This software is released under the GPL-License.
   5  * Version 0.7  6 Aug 2001
   6  */
   7
   8
   9 #include <linux/autoconf.h>
  10 #if defined (CONFIG_MODVERSIONS) && !defined (MODVERSIONS)
  11 #define MODVERSIONS
  12 #endif
  13
  14 #if defined (MODVERSIONS)
  15 #include <linux/modversions.h>
  16 #endif
  17
  18 #include "../.support"
  19 #ifndef PIP
  20 #define PIP 0
  21 #endif
  22 #ifndef SMARTCAN
  23 #define SMARTCAN 0
  24 #endif
  25 #ifndef PCCAN
  26 #define PCCAN 0
  27 #endif
  28 #ifndef NSI
  29 #define NSI 0
  30 #endif
  31 #ifndef CC104
  32 #define CC104 0
  33 #endif
  34 #ifndef AIM104
  35 #define AIM104 0
  36 #endif
  37 #ifndef PCI03
  38 #define PCI03 0
  39 #endif
  40 #ifndef PCM3680
  41 #define PCM3680 0
  42 #endif
  43 #ifndef M437
  44 #define M437 0
  45 #endif
  46 #ifndef PCCCAN
  47 #define PCCCAN 0
  48 #endif
  49 #ifndef SSV
  50 #define SSV 0
  51 #endif
  52 #ifndef TEMPLATE
  53 #define TEMPLATE 0
  54 #endif
  55
  56 #include <linux/string.h>
  57 #include <linux/fs.h>
  58
  59 #include "../include/main.h"
  60 #include "../include/modparms.h"
  61
  62 int parse_mod_parms(void)
  63 {
  64         int i=0,j=0,irq_needed=0,irq_supplied=0,io_needed=0,io_supplied=0,minor_needed=0,minor_supplied=0;
  65
  66         if ( (hw[0] == NULL) | (irq[0] == -1) | (io[0] == -1) ) {
  67                 CANMSG("You must supply your type of hardware, interrupt numbers and io address.\n");
  68                 CANMSG("Example: # insmod can.o hw=pip5 irq=4 io=0x8000\n");
  69                 return -ENODEV;
  70         }
  71
  72         while ( (hw[i] != NULL) && (i < MAX_HW_CARDS) ) {
  73                 if ( !strcmp(hw[i],"pip5") && PIP )
  74                         irq_needed++;
  75                 else if (!strcmp(hw[i],"pip6") && PIP)
  76                         irq_needed++;
  77                 else if (!strcmp(hw[i],"smartcan") && SMARTCAN)
  78                         irq_needed++;
  79                 else if (!strcmp(hw[i],"pccan-q") && PCCAN)
  80                         irq_needed=irq_needed+4;
  81                 else if (!strcmp(hw[i],"pccan-f") && PCCAN)
  82                         irq_needed++;
  83                 else if (!strcmp(hw[i],"pccan-s") && PCCAN)
  84                         irq_needed++;
  85                 else if (!strcmp(hw[i],"pccan-d") && PCCAN)
  86                         irq_needed=irq_needed+2;
  87                 else if (!strcmp(hw[i],"nsican") && NSI)
  88                         irq_needed++;
  89                 else if (!strcmp(hw[i],"cc104") && CC104)
  90                         irq_needed++;
  91                 else if (!strcmp(hw[i],"aim104") && AIM104)
  92                         irq_needed++;
  93                 else if (!strcmp(hw[i],"pc-i03") && PCI03)
  94                         irq_needed++;
  95                 else if (!strcmp(hw[i],"pcm3680") && PCM3680)
  96                         irq_needed=irq_needed+2;
  97                 else if (!strcmp(hw[i],"m437") && M437)
  98                         irq_needed++;
  99                 else if (!strcmp(hw[i],"pcccan") && PCCCAN)
 100                         irq_needed++;
 101                 else if (!strcmp(hw[i],"ssv") && SSV)
 102                         irq_needed=irq_needed+2;
 103                 else if (!strcmp(hw[i],"template") && TEMPLATE);
 104                 else {
 105                         CANMSG("Sorry, hardware \"%s\" is currently not supported.\n",hw[i]);
 106                         return -EINVAL;
 107                 }
 108                 i++;
 109         }
 110
 111         /* Check wether the supplied number of io addresses is correct. */
 112         io_needed=i;
 113         while ( (io[io_supplied] != -1) & (io_supplied<MAX_HW_CARDS) )
 114                 io_supplied++;
 115         if (io_needed != io_supplied) {
 116                 CANMSG("Invalid number of io addresses.\n");
 117                 CANMSG("Supplied hardware needs %d io address(es).\n",io_needed);
 118                 return -EINVAL;
 119         }
 120
 121         /* Check wether the supplied number of irq's is correct. */
 122         while ( (irq[irq_supplied] != -1) & (irq_supplied<MAX_IRQ) )
 123                 irq_supplied++;
 124         while ( (hw[j] != NULL) && (j<MAX_HW_CARDS) ) {
 125                 if (!strcmp(hw[j],"template") && TEMPLATE)
 126                         irq_needed = irq_supplied;
 127                 j++;
 128         }
 129         if (irq_needed != irq_supplied) {
 130                 CANMSG("Invalid number of interrupts.\n");
 131                 CANMSG("Supplied harware needs %d irq number(s).\n",irq_needed);
 132                 return -EINVAL;
 133         }
 134
 135         /* In case minor numbers were assigned check wether the correct number
 136          * of minor numbers was supplied.
 137          */
 138         if (minor[0] != -1) {
 139                 minor_needed=irq_needed;
 140                 while ((minor[minor_supplied] != -1) & (minor_supplied<MAX_IRQ))
 141                         minor_supplied++;
 142                 if (minor_supplied != minor_needed) {
 143                         CANMSG("Invalid number of minor numbers.\n");
 144                         CANMSG("Supplied hardware needs %d minor number(s).\n",minor_needed);
 145                         return -EINVAL;
 146                 }
 147         }
 148
 149         return 0;
 150 }
 151 /* list_hw is used when debugging is on to show the hardware layout */
 152 int list_hw(void)
 153 {
 154         int i=0,j=0,k=0;
 155
 156         DEBUGMSG("Number of boards : %d\n",hardware_p->nr_boards);
 157
 158         while ( (hw[i] != NULL) & (i<=MAX_HW_CARDS-1) ) {
 159                 printk(KERN_ERR "\n");
 160                 DEBUGMSG("Hardware         : %s\n",hardware_p->candevice[i]->hwname);
 161                 DEBUGMSG("IO address       : 0x%lx\n",hardware_p->candevice[i]->io_addr);
 162                 DEBUGMSG("Nr. of i82527    : %d\n",hardware_p->candevice[i]->nr_82527_chips);
 163                 DEBUGMSG("Nr. of sja1000   : %d\n",hardware_p->candevice[i]->nr_sja1000_chips);
 164                 for (j=0; j<hardware_p->candevice[i]->nr_82527_chips+hardware_p->candevice[i]->nr_sja1000_chips; j++) {
 165                         DEBUGMSG("Chip%d type       : %s\n", j+1, hardware_p->candevice[i]->chip[j]->chip_type);
 166                         DEBUGMSG("Chip base        : 0x%lx\n",hardware_p->candevice[i]->chip[j]->chip_base_addr);
 167                         DEBUGMSG("Interrupt        : %d\n",hardware_p->candevice[i]->chip[j]->chip_irq);
 168
 169
 170                         if (!strcmp(hardware_p->candevice[i]->chip[j]->chip_type,"i82527")) {
 171                                 for (k=0; k<15; k++)
 172                                         DEBUGMSG("Obj%d: minor: %d base: 0x%lx\n",k,hardware_p->candevice[i]->chip[j]->msgobj[k]->minor,hardware_p->candevice[i]->chip[j]->msgobj[k]->obj_base_addr);
 173                         }
 174
 175                         if (!strcmp(hardware_p->candevice[i]->chip[j]->chip_type,"sja1000")) {
 176                                 for (k=0; k<1; k++)
 177                                         DEBUGMSG("Obj%d: minor: %d base: 0x%lx\n",k,hardware_p->candevice[i]->chip[j]->msgobj[k]->minor,hardware_p->candevice[i]->chip[j]->msgobj[k]->obj_base_addr);
 178                         }
 179
 180
 181                 }
 182                 i++;
 183         }
 184         return 0;
 185 }