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  1. /*
  2.  * Copyright (C) 2005 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 ia64interrupt
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef KERN_ia64_INTERRUPT_H_
  36. #define KERN_ia64_INTERRUPT_H_
  37.  
  38. #include <typedefs.h>
  39. #include <arch/types.h>
  40. #include <arch/register.h>
  41.  
  42. /** ia64 has 256 INRs. */
  43. #define INR_COUNT   256
  44.  
  45. /*
  46.  * We need to keep this just to compile.
  47.  * We might eventually move interrupt/ stuff
  48.  * to genarch.
  49.  */
  50. #define IVT_ITEMS       0
  51. #define IVT_FIRST       0
  52.  
  53. /** External Interrupt vectors. */
  54. #define INTERRUPT_TIMER     255
  55. #define INTERRUPT_SPURIOUS  15
  56.  
  57. /** General Exception codes. */
  58. #define GE_ILLEGALOP        0
  59. #define GE_PRIVOP       1
  60. #define GE_PRIVREG      2
  61. #define GE_RESREGFLD        3
  62. #define GE_DISBLDISTRAN     4
  63. #define GE_ILLEGALDEP       8
  64.  
  65. #define EOI 0       /**< The actual value doesn't matter. */
  66.  
  67. struct istate {
  68.     __r128 f2;
  69.     __r128 f3;
  70.     __r128 f4;
  71.     __r128 f5;
  72.     __r128 f6;
  73.     __r128 f7;
  74.     __r128 f8;
  75.     __r128 f9;
  76.     __r128 f10;
  77.     __r128 f11;
  78.     __r128 f12;
  79.     __r128 f13;
  80.     __r128 f14;
  81.     __r128 f15;
  82.     __r128 f16;
  83.     __r128 f17;
  84.     __r128 f18;
  85.     __r128 f19;
  86.     __r128 f20;
  87.     __r128 f21;
  88.     __r128 f22;
  89.     __r128 f23;
  90.     __r128 f24;
  91.     __r128 f25;
  92.     __r128 f26;
  93.     __r128 f27;
  94.     __r128 f28;
  95.     __r128 f29;
  96.     __r128 f30;
  97.     __r128 f31;
  98.        
  99.     uintptr_t ar_bsp;
  100.     uintptr_t ar_bspstore;
  101.     uintptr_t ar_bspstore_new;
  102.     uint64_t ar_rnat;
  103.     uint64_t ar_ifs;
  104.     uint64_t ar_pfs;
  105.     uint64_t ar_rsc;
  106.     uintptr_t cr_ifa;
  107.     cr_isr_t cr_isr;
  108.     uintptr_t cr_iipa;
  109.     psr_t cr_ipsr;
  110.     uintptr_t cr_iip;
  111.     uint64_t pr;
  112.     uintptr_t sp;
  113.    
  114.     /*
  115.      * The following variables are defined only for break_instruction handler.
  116.      */
  117.     uint64_t in0;
  118.     uint64_t in1;
  119.     uint64_t in2;
  120.     uint64_t in3;
  121.     uint64_t in4;
  122. };
  123.  
  124. static inline void istate_set_retaddr(istate_t *istate, uintptr_t retaddr)
  125. {
  126.     istate->cr_iip = retaddr;
  127.     istate->cr_ipsr.ri = 0;     /* return to instruction slot #0 */
  128. }
  129.  
  130. static inline unative_t istate_get_pc(istate_t *istate)
  131. {
  132.     return istate->cr_iip;
  133. }
  134.  
  135. static inline int istate_from_uspace(istate_t *istate)
  136. {
  137.     return (istate->cr_iip) < 0xe000000000000000ULL;
  138. }
  139.  
  140. extern void *ivt;
  141.  
  142. extern void general_exception(uint64_t vector, istate_t *istate);
  143. extern int break_instruction(uint64_t vector, istate_t *istate);
  144. extern void universal_handler(uint64_t vector, istate_t *istate);
  145. extern void nop_handler(uint64_t vector, istate_t *istate);
  146. extern void external_interrupt(uint64_t vector, istate_t *istate);
  147. extern void disabled_fp_register(uint64_t vector, istate_t *istate);
  148.  
  149. #endif
  150.  
  151. /** @}
  152.  */
  153.