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  1. /*
  2.  * Copyright (C) 2001-2004 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29.  /** @addtogroup amd64interrupt
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <arch/interrupt.h>
  36. #include <print.h>
  37. #include <debug.h>
  38. #include <panic.h>
  39. #include <arch/drivers/i8259.h>
  40. #include <func.h>
  41. #include <cpu.h>
  42. #include <arch/asm.h>
  43. #include <mm/tlb.h>
  44. #include <mm/as.h>
  45. #include <arch.h>
  46. #include <symtab.h>
  47. #include <arch/asm.h>
  48. #include <proc/scheduler.h>
  49. #include <proc/thread.h>
  50. #include <proc/task.h>
  51. #include <synch/spinlock.h>
  52. #include <arch/ddi/ddi.h>
  53. #include <interrupt.h>
  54. #include <ipc/irq.h>
  55.  
  56. void print_info_errcode(int n, istate_t *istate)
  57. {
  58.     char *symbol;
  59. /*  __u64 *x = &istate->stack[0]; */
  60.  
  61.     if (!(symbol=get_symtab_entry(istate->rip)))
  62.         symbol = "";
  63.  
  64.     printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n, __FUNCTION__);
  65.     printf("%%rip: %#llX (%s)\n",istate->rip, symbol);
  66.     printf("ERROR_WORD=%#llX\n", istate->error_word);
  67.     printf("%%rcs=%#llX, flags=%#llX, %%cr0=%#llX\n", istate->cs, istate->rflags,read_cr0());
  68.     printf("%%rax=%#llX, %%rcx=%#llX, %%rdx=%#llX\n",istate->rax,istate->rcx,istate->rdx);
  69.     printf("%%rsi=%#llX, %%rdi=%#llX, %%r8 =%#llX\n",istate->rsi,istate->rdi,istate->r8);
  70.     printf("%%r9 =%#llX, %%r10 =%#llX, %%r11=%#llX\n",istate->r9,istate->r10,istate->r11);
  71. #ifdef CONFIG_DEBUG_ALLREGS
  72.     printf("%%r12=%#llX, %%r13=%#llX, %%r14=%#llX\n",istate->r12,istate->r13,istate->r14);
  73.     printf("%%r15=%#llX, %%rbx=%#llX, %%rbp=%#llX\n",istate->r15,istate->rbx,&istate->rbp);
  74. #endif
  75.     printf("%%rsp=%#llX\n",&istate->stack[0]);
  76. }
  77.  
  78. /*
  79.  * Interrupt and exception dispatching.
  80.  */
  81.  
  82. void (* disable_irqs_function)(__u16 irqmask) = NULL;
  83. void (* enable_irqs_function)(__u16 irqmask) = NULL;
  84. void (* eoi_function)(void) = NULL;
  85.  
  86. void null_interrupt(int n, istate_t *istate)
  87. {
  88.     fault_if_from_uspace(istate, "unserviced interrupt: %d", n);
  89.     print_info_errcode(n, istate);
  90.     panic("unserviced interrupt\n");
  91. }
  92.  
  93. /** General Protection Fault. */
  94. void gp_fault(int n, istate_t *istate)
  95. {
  96.     if (TASK) {
  97.         count_t ver;
  98.  
  99.         spinlock_lock(&TASK->lock);
  100.         ver = TASK->arch.iomapver;
  101.         spinlock_unlock(&TASK->lock);
  102.  
  103.         if (CPU->arch.iomapver_copy != ver) {
  104.             /*
  105.              * This fault can be caused by an early access
  106.              * to I/O port because of an out-dated
  107.              * I/O Permission bitmap installed on CPU.
  108.              * Install the fresh copy and restart
  109.              * the instruction.
  110.              */
  111.             io_perm_bitmap_install();
  112.             return;
  113.         }
  114.         fault_if_from_uspace(istate, "general protection fault");
  115.     }
  116.  
  117.     print_info_errcode(n, istate);
  118.     panic("general protection fault\n");
  119. }
  120.  
  121. void ss_fault(int n, istate_t *istate)
  122. {
  123.     fault_if_from_uspace(istate, "stack fault");
  124.     print_info_errcode(n, istate);
  125.     panic("stack fault\n");
  126. }
  127.  
  128. void nm_fault(int n, istate_t *istate)
  129. {
  130. #ifdef CONFIG_FPU_LAZY    
  131.     scheduler_fpu_lazy_request();
  132. #else
  133.     fault_if_from_uspace(istate, "fpu fault");
  134.     panic("fpu fault");
  135. #endif
  136. }
  137.  
  138. void tlb_shootdown_ipi(int n, istate_t *istate)
  139. {
  140.     trap_virtual_eoi();
  141.     tlb_shootdown_ipi_recv();
  142. }
  143.  
  144. void trap_virtual_enable_irqs(__u16 irqmask)
  145. {
  146.     if (enable_irqs_function)
  147.         enable_irqs_function(irqmask);
  148.     else
  149.         panic("no enable_irqs_function\n");
  150. }
  151.  
  152. void trap_virtual_disable_irqs(__u16 irqmask)
  153. {
  154.     if (disable_irqs_function)
  155.         disable_irqs_function(irqmask);
  156.     else
  157.         panic("no disable_irqs_function\n");
  158. }
  159.  
  160. void trap_virtual_eoi(void)
  161. {
  162.     if (eoi_function)
  163.         eoi_function();
  164.     else
  165.         panic("no eoi_function\n");
  166.  
  167. }
  168.  
  169. static void ipc_int(int n, istate_t *istate)
  170. {
  171.     trap_virtual_eoi();
  172.     ipc_irq_send_notif(n-IVT_IRQBASE);
  173. }
  174.  
  175.  
  176. /* Reregister irq to be IPC-ready */
  177. void irq_ipc_bind_arch(__native irq)
  178. {
  179.     if (irq == IRQ_CLK)
  180.         return;
  181.     exc_register(IVT_IRQBASE+irq, "ipc_int", ipc_int);
  182. }
  183.  
  184.  /** @}
  185.  */
  186.  
  187.