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("Autodetection works only for USB devices, supply your type of hardware for PCI devices \n");
  24                 CANMSG("Example: # insmod can.o hw=pip5 irq=4 io=0x8000\n");
  25                 //return -ENODEV;
  26         }
  27
  28         while ( (hw[i] != NULL) && (i < MAX_HW_CARDS) ) {
  29                 brp = boardtype_find(hw[i]);
  30                 if(!brp) {
  31                         CANMSG("Sorry, hardware \"%s\" is currently not supported.\n",hw[i]);
  32                         return -EINVAL;
  33                 }
  34                 irq_needed += brp->irqnum;
  35                 i++;
  36         }
  37
  38         /* Check wether the supplied number of io addresses is correct. */
  39         io_needed=i;
  40         while ( (io[io_supplied] != -1) & (io_supplied<MAX_HW_CARDS) )
  41                 io_supplied++;
  42         if (io_needed != io_supplied) {
  43                 CANMSG("Invalid number of io addresses.\n");
  44                 CANMSG("Supplied hardware needs %d io address(es).\n",io_needed);
  45                 return -EINVAL;
  46         }
  47
  48         /* Check wether the supplied number of irq's is correct. */
  49         while ( (irq[irq_supplied] != -1) & (irq_supplied<MAX_IRQ) )
  50                 irq_supplied++;
  51         while ( (hw[j] != NULL) && (j<MAX_HW_CARDS) ) {
  52                 if (!strcmp(hw[j],"template"))
  53                         irq_needed = irq_supplied;
  54                 j++;
  55         }
  56         if (irq_needed != irq_supplied) {
  57                 CANMSG("Invalid number of interrupts.\n");
  58                 CANMSG("Supplied harware needs %d irq number(s).\n",irq_needed);
  59                 return -EINVAL;
  60         }
  61
  62         /* In case minor numbers were assigned check wether the correct number
  63          * of minor numbers was supplied.
  64          */
  65         if (minor[0] != -1) {
  66                 minor_needed=irq_needed;
  67                 while ((minor[minor_supplied] != -1) & (minor_supplied<MAX_IRQ))
  68                         minor_supplied++;
  69                 if (minor_supplied != minor_needed) {
  70                         CANMSG("Invalid number of minor numbers.\n");
  71                         CANMSG("Supplied hardware needs %d minor number(s).\n",minor_needed);
  72                         return -EINVAL;
  73                 }
  74         }
  75
  76         return 0;
  77 }
  78 /* list_hw is used when debugging is on to show the hardware layout */
  79 int list_hw(void)
  80 {
  81         int i=0,j=0,k=0;
  82
  83         DEBUGMSG("Number of boards : %d\n",hardware_p->nr_boards);
  84
  85         while ( (hw[i] != NULL) & (i<=MAX_HW_CARDS-1) ) {
  86                 printk(KERN_ERR "\n");
  87                 DEBUGMSG("Hardware         : %s\n",hardware_p->candevice[i]->hwname);
  88                 DEBUGMSG("IO address       : 0x%lx\n",hardware_p->candevice[i]->io_addr);
  89                 DEBUGMSG("Nr. all chips    : %d\n",hardware_p->candevice[i]->nr_all_chips);
  90                 DEBUGMSG("Nr. of i82527    : %d\n",hardware_p->candevice[i]->nr_82527_chips);
  91                 DEBUGMSG("Nr. of sja1000   : %d\n",hardware_p->candevice[i]->nr_sja1000_chips);
  92                 for (j=0; j<hardware_p->candevice[i]->nr_all_chips; j++) {
  93                         DEBUGMSG("Chip%d type       : %s\n", j+1, hardware_p->candevice[i]->chip[j]->chip_type);
  94                         DEBUGMSG("Chip base        : 0x%lx\n",hardware_p->candevice[i]->chip[j]->chip_base_addr);
  95                         DEBUGMSG("Interrupt        : %d\n",hardware_p->candevice[i]->chip[j]->chip_irq);
  96
  97
  98                         for (k=0; k<hardware_p->candevice[i]->chip[j]->max_objects; k++)
  99                                 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);
 100
 101                 }
 102                 i++;
 103         }
 104         return 0;
 105 }