lunaix-os/kernel/asm/x86/intr_routines.c

   1 #include <arch/x86/interrupts.h>
   2 #include <lunaix/lxconsole.h>
   3 #include <lunaix/process.h>
   4 #include <lunaix/sched.h>
   5 #include <lunaix/spike.h>
   6 #include <lunaix/syslog.h>
   7 #include <lunaix/tty/tty.h>
   8
   9 #include <klibc/stdio.h>
  10
  11 #include <hal/apic.h>
  12
  13 LOG_MODULE("INTR")
  14
  15 extern void
  16 intr_routine_page_fault(const isr_param* param);
  17
  18 extern uint32_t debug_resv;
  19
  20 void
  21 __print_panic_msg(const char* msg, const isr_param* param)
  22 {
  23     kprint_panic("  INT %u: (%x) [%p: %p] %s",
  24                  param->vector,
  25                  param->err_code,
  26                  param->cs,
  27                  param->eip,
  28                  msg);
  29 }
  30
  31 void
  32 intr_routine_divide_zero(const isr_param* param)
  33 {
  34     console_flush();
  35     __print_panic_msg("Divide by zero!", param);
  36     spin();
  37 }
  38
  39 void
  40 intr_routine_general_protection(const isr_param* param)
  41 {
  42     kprintf(KERROR "Pid: %d\n", __current->pid);
  43     kprintf(KERROR "Addr: %p\n", (&debug_resv)[0]);
  44     kprintf(KERROR "Expected: %p\n", (&debug_resv)[1]);
  45     console_flush();
  46     __print_panic_msg("General Protection", param);
  47     spin();
  48 }
  49
  50 void
  51 intr_routine_sys_panic(const isr_param* param)
  52 {
  53     console_flush();
  54     __print_panic_msg((char*)(param->registers.edi), param);
  55     spin();
  56 }
  57
  58 void
  59 intr_routine_fallback(const isr_param* param)
  60 {
  61     console_flush();
  62     __print_panic_msg("Unknown Interrupt", param);
  63     spin();
  64 }
  65
  66 /**
  67  * @brief ISR for Spurious interrupt
  68  *
  69  * @param isr_param passed by CPU
  70  */
  71 void
  72 intr_routine_apic_spi(const isr_param* param)
  73 {
  74     // FUTURE: do nothing for now
  75 }
  76
  77 void
  78 intr_routine_apic_error(const isr_param* param)
  79 {
  80     uint32_t error_reg = apic_read_reg(APIC_ESR);
  81     char buf[32];
  82     ksprintf(buf, "APIC error, ESR=0x%x", error_reg);
  83     console_flush();
  84     __print_panic_msg(buf, param);
  85     spin();
  86 }
  87
  88 void
  89 intr_routine_sched(const isr_param* param)
  90 {
  91     schedule();
  92 }
  93
  94 void
  95 intr_routine_init()
  96 {
  97     intr_subscribe(FAULT_DIVISION_ERROR, intr_routine_divide_zero);
  98     intr_subscribe(FAULT_GENERAL_PROTECTION, intr_routine_general_protection);
  99     intr_subscribe(FAULT_PAGE_FAULT, intr_routine_page_fault);
 100     intr_subscribe(FAULT_STACK_SEG_FAULT, intr_routine_page_fault);
 101
 102     intr_subscribe(LUNAIX_SYS_PANIC, intr_routine_sys_panic);
 103     intr_subscribe(LUNAIX_SCHED, intr_routine_sched);
 104
 105     intr_subscribe(APIC_SPIV_IV, intr_routine_apic_spi);
 106     intr_subscribe(APIC_ERROR_IV, intr_routine_apic_error);
 107
 108     intr_set_fallback_handler(intr_routine_fallback);
 109 }