lunaix-os/arch/x86/exceptions/intr_routines.c

   1 #include <sys/hart.h>
   2
   3 #include <lunaix/generic/isrm.h>
   4 #include <lunaix/process.h>
   5 #include <lunaix/sched.h>
   6 #include <lunaix/spike.h>
   7 #include <lunaix/syslog.h>
   8 #include <lunaix/trace.h>
   9 #include <lunaix/failsafe.h>
  10
  11 #include <klibc/strfmt.h>
  12
  13 #include "sys/apic.h"
  14 #include <sys/int_handler.h>
  15
  16 LOG_MODULE("INTR")
  17
  18 extern void
  19 intr_routine_page_fault(const struct hart_state* state);
  20
  21 extern u32_t debug_resv;
  22
  23 void
  24 __print_panic_msg(const char* msg, const struct hart_state* state)
  25 {
  26     ERROR("panic: %s", msg);
  27     failsafe_diagnostic();
  28 }
  29
  30 void
  31 intr_routine_divide_zero(const struct hart_state* state)
  32 {
  33     __print_panic_msg("div zero", state);
  34 }
  35
  36 void
  37 intr_routine_general_protection(const struct hart_state* state)
  38 {
  39     __print_panic_msg("general protection", state);
  40 }
  41
  42 void
  43 intr_routine_sys_panic(const struct hart_state* state)
  44 {
  45 #ifdef CONFIG_ARCH_X86_64
  46     __print_panic_msg((char*)(state->registers.rdi), state);
  47 #else
  48     __print_panic_msg((char*)(state->registers.edi), state);
  49 #endif
  50 }
  51
  52 void
  53 intr_routine_fallback(const struct hart_state* state)
  54 {
  55     __print_panic_msg("unknown interrupt", state);
  56 }
  57
  58 /**
  59  * @brief ISR for Spurious interrupt
  60  *
  61  * @param struct hart_state passed by CPU
  62  */
  63 void
  64 intr_routine_apic_spi(const struct hart_state* state)
  65 {
  66     // FUTURE: do nothing for now
  67 }
  68
  69 void
  70 intr_routine_apic_error(const struct hart_state* state)
  71 {
  72     u32_t error_reg = apic_read_reg(APIC_ESR);
  73     char buf[32];
  74     ksprintf(buf, "APIC error, ESR=0x%x", error_reg);
  75
  76     failsafe_diagnostic();
  77 }
  78
  79 void
  80 intr_routine_sched(const struct hart_state* state)
  81 {
  82     schedule();
  83 }
  84
  85 void
  86 intr_routine_init()
  87 {
  88     isrm_bindiv(FAULT_DIVISION_ERROR, intr_routine_divide_zero);
  89     isrm_bindiv(FAULT_GENERAL_PROTECTION, intr_routine_general_protection);
  90     isrm_bindiv(FAULT_PAGE_FAULT, intr_routine_page_fault);
  91     isrm_bindiv(FAULT_STACK_SEG_FAULT, intr_routine_page_fault);
  92
  93     isrm_bindiv(LUNAIX_SYS_PANIC, intr_routine_sys_panic);
  94     isrm_bindiv(LUNAIX_SCHED, intr_routine_sched);
  95
  96     isrm_bindiv(APIC_SPIV_IV, intr_routine_apic_spi);
  97     isrm_bindiv(APIC_ERROR_IV, intr_routine_apic_error);
  98 }