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-0.3  17 Jun 2004
   8  */
   9
  10
  11 #include "../include/can.h"
  12 #include "../include/can_sysdep.h"
  13 #include "../include/main.h"
  14 #include "../include/modparms.h"
  15
  16 int parse_mod_parms(void)
  17 {
  18         int i=0,j=0,irq_needed=0,irq_supplied=0,io_needed=0,io_supplied=0,minor_needed=0,minor_supplied=0;
  19         const struct boardtype_t *brp;
  20
  21         if ( (hw[0] == NULL) | (io[0] == -1) ) {
  22                 CANMSG("You must supply your type of hardware, interrupt numbers and io address.\n");
  23                 CANMSG("Example: # insmod can.o hw=pip5 irq=4 io=0x8000\n");
  24                 return -ENODEV;
  25         }
  26
  27         while ( (hw[i] != NULL) && (i < MAX_HW_CARDS) ) {
  28                 brp = boardtype_find(hw[i]);
  29                 if(!brp) {
  30                         CANMSG("Sorry, hardware \"%s\" is currently not supported.\n",hw[i]);
  31                         return -EINVAL;
  32                 }
  33                 irq_needed += brp->irqnum;
  34                 i++;
  35         }
  36
  37         /* Check wether the supplied number of io addresses is correct. */
  38         io_needed=i;
  39         while ( (io[io_supplied] != -1) & (io_supplied<MAX_HW_CARDS) )
  40                 io_supplied++;
  41         if (io_needed != io_supplied) {
  42                 CANMSG("Invalid number of io addresses.\n");
  43                 CANMSG("Supplied hardware needs %d io address(es).\n",io_needed);
  44                 return -EINVAL;
  45         }
  46
  47         /* Check wether the supplied number of irq's is correct. */
  48         while ( (irq[irq_supplied] != -1) & (irq_supplied<MAX_IRQ) )
  49                 irq_supplied++;
  50         while ( (hw[j] != NULL) && (j<MAX_HW_CARDS) ) {
  51                 if (!strcmp(hw[j],"template"))
  52                         irq_needed = irq_supplied;
  53                 j++;
  54         }
  55         if (irq_needed != irq_supplied) {
  56                 CANMSG("Invalid number of interrupts.\n");
  57                 CANMSG("Supplied harware needs %d irq number(s).\n",irq_needed);
  58                 return -EINVAL;
  59         }
  60
  61         /* In case minor numbers were assigned check wether the correct number
  62          * of minor numbers was supplied.
  63          */
  64         if (minor[0] != -1) {
  65                 minor_needed=irq_needed;
  66                 while ((minor[minor_supplied] != -1) & (minor_supplied<MAX_IRQ))
  67                         minor_supplied++;
  68                 if (minor_supplied != minor_needed) {
  69                         CANMSG("Invalid number of minor numbers.\n");
  70                         CANMSG("Supplied hardware needs %d minor number(s).\n",minor_needed);
  71                         return -EINVAL;
  72                 }
  73         }
  74
  75         return 0;
  76 }
  77 /* list_hw is used when debugging is on to show the hardware layout */
  78 int list_hw(void)
  79 {
  80         int i=0,j=0,k=0;
  81
  82         DEBUGMSG("Number of boards : %d\n",hardware_p->nr_boards);
  83
  84         while ( (hw[i] != NULL) & (i<=MAX_HW_CARDS-1) ) {
  85                 printk(KERN_ERR "\n");
  86                 DEBUGMSG("Hardware         : %s\n",hardware_p->candevice[i]->hwname);
  87                 DEBUGMSG("IO address       : 0x%lx\n",hardware_p->candevice[i]->io_addr);
  88                 DEBUGMSG("Nr. all chips    : %d\n",hardware_p->candevice[i]->nr_all_chips);
  89                 DEBUGMSG("Nr. of i82527    : %d\n",hardware_p->candevice[i]->nr_82527_chips);
  90                 DEBUGMSG("Nr. of sja1000   : %d\n",hardware_p->candevice[i]->nr_sja1000_chips);
  91                 for (j=0; j<hardware_p->candevice[i]->nr_all_chips; j++) {
  92                         DEBUGMSG("Chip%d type       : %s\n", j+1, hardware_p->candevice[i]->chip[j]->chip_type);
  93                         DEBUGMSG("Chip base        : 0x%lx\n",hardware_p->candevice[i]->chip[j]->chip_base_addr);
  94                         DEBUGMSG("Interrupt        : %d\n",hardware_p->candevice[i]->chip[j]->chip_irq);
  95
  96
  97                         for (k=0; k<hardware_p->candevice[i]->chip[j]->max_objects; k++)
  98                                 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);
  99
 100                 }
 101                 i++;
 102         }
 103         return 0;
 104 }