lincan/src/modparms.c

   1 /* mod_parms.c
   2  * Linux CAN-bus device driver.
   3  * Written by Arnaud Westenberg email:arnaud@wanadoo.nl
   4  * Rewritten for new CAN queues by Pavel Pisa - OCERA team member
   5  * email:pisa@cmp.felk.cvut.cz
   6  * This software is released under the GPL-License.
   7  * Version lincan-0.2  9 Jul 2003
   8  */
   9
  10
  11 #include <linux/autoconf.h>
  12
  13 #include <linux/string.h>
  14 #include <linux/fs.h>
  15
  16 #include "../include/main.h"
  17 #include "../include/modparms.h"
  18
  19 int parse_mod_parms(void)
  20 {
  21         int i=0,j=0,irq_needed=0,irq_supplied=0,io_needed=0,io_supplied=0,minor_needed=0,minor_supplied=0;
  22         const struct boardtype_t *brp;
  23
  24         if ( (hw[0] == NULL) | (io[0] == -1) ) {
  25                 CANMSG("You must supply your type of hardware, interrupt numbers and io address.\n");
  26                 CANMSG("Example: # insmod can.o hw=pip5 irq=4 io=0x8000\n");
  27                 return -ENODEV;
  28         }
  29
  30         while ( (hw[i] != NULL) && (i < MAX_HW_CARDS) ) {
  31                 brp = boardtype_find(hw[i]);
  32                 if(!brp) {
  33                         CANMSG("Sorry, hardware \"%s\" is currently not supported.\n",hw[i]);
  34                         return -EINVAL;
  35                 }
  36                 irq_needed += brp->irqnum;
  37                 i++;
  38         }
  39
  40         /* Check wether the supplied number of io addresses is correct. */
  41         io_needed=i;
  42         while ( (io[io_supplied] != -1) & (io_supplied<MAX_HW_CARDS) )
  43                 io_supplied++;
  44         if (io_needed != io_supplied) {
  45                 CANMSG("Invalid number of io addresses.\n");
  46                 CANMSG("Supplied hardware needs %d io address(es).\n",io_needed);
  47                 return -EINVAL;
  48         }
  49
  50         /* Check wether the supplied number of irq's is correct. */
  51         while ( (irq[irq_supplied] != -1) & (irq_supplied<MAX_IRQ) )
  52                 irq_supplied++;
  53         while ( (hw[j] != NULL) && (j<MAX_HW_CARDS) ) {
  54                 if (!strcmp(hw[j],"template"))
  55                         irq_needed = irq_supplied;
  56                 j++;
  57         }
  58         if (irq_needed != irq_supplied) {
  59                 CANMSG("Invalid number of interrupts.\n");
  60                 CANMSG("Supplied harware needs %d irq number(s).\n",irq_needed);
  61                 return -EINVAL;
  62         }
  63
  64         /* In case minor numbers were assigned check wether the correct number
  65          * of minor numbers was supplied.
  66          */
  67         if (minor[0] != -1) {
  68                 minor_needed=irq_needed;
  69                 while ((minor[minor_supplied] != -1) & (minor_supplied<MAX_IRQ))
  70                         minor_supplied++;
  71                 if (minor_supplied != minor_needed) {
  72                         CANMSG("Invalid number of minor numbers.\n");
  73                         CANMSG("Supplied hardware needs %d minor number(s).\n",minor_needed);
  74                         return -EINVAL;
  75                 }
  76         }
  77
  78         return 0;
  79 }
  80 /* list_hw is used when debugging is on to show the hardware layout */
  81 int list_hw(void)
  82 {
  83         int i=0,j=0,k=0;
  84
  85         DEBUGMSG("Number of boards : %d\n",hardware_p->nr_boards);
  86
  87         while ( (hw[i] != NULL) & (i<=MAX_HW_CARDS-1) ) {
  88                 printk(KERN_ERR "\n");
  89                 DEBUGMSG("Hardware         : %s\n",hardware_p->candevice[i]->hwname);
  90                 DEBUGMSG("IO address       : 0x%lx\n",hardware_p->candevice[i]->io_addr);
  91                 DEBUGMSG("Nr. all chips    : %d\n",hardware_p->candevice[i]->nr_all_chips);
  92                 DEBUGMSG("Nr. of i82527    : %d\n",hardware_p->candevice[i]->nr_82527_chips);
  93                 DEBUGMSG("Nr. of sja1000   : %d\n",hardware_p->candevice[i]->nr_sja1000_chips);
  94                 for (j=0; j<hardware_p->candevice[i]->nr_all_chips; j++) {
  95                         DEBUGMSG("Chip%d type       : %s\n", j+1, hardware_p->candevice[i]->chip[j]->chip_type);
  96                         DEBUGMSG("Chip base        : 0x%lx\n",hardware_p->candevice[i]->chip[j]->chip_base_addr);
  97                         DEBUGMSG("Interrupt        : %d\n",hardware_p->candevice[i]->chip[j]->chip_irq);
  98
  99
 100                         for (k=0; k<hardware_p->candevice[i]->chip[j]->max_objects; k++)
 101                                 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);
 102
 103                 }
 104                 i++;
 105         }
 106         return 0;
 107 }