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  1. /*
  2.  * Copyright (c) 2008 Pavel Rimsky
  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 sparc64
  30.  * @{
  31.  */
  32. /**
  33.  * @file
  34.  * @brief   Macros, constants and functions needed to perform a call to the
  35.  *      hypervisor API. For details and terminology see this document:
  36.  *      UltraSPARC Virtual Machine Specification (The Hypervisor API
  37.  *      specification for Logical Domains).
  38.  *
  39.  */
  40.  
  41. #ifndef KERN_sparc64_sun4v_HYPERCALL_H_
  42. #define KERN_sparc64_sun4v_HYPERCALL_H_
  43.  
  44. /* SW trap numbers for hyperfast traps */
  45. #define FAST_TRAP       0x80
  46. #define MMU_MAP_ADDR        0x83
  47. #define MMU_UNMAP_ADDR      0x84
  48.  
  49. /* function codes for fast traps */
  50. #define MACH_DESC       0x01
  51. #define CPU_START       0x10
  52. #define CPU_STOP        0x11
  53. #define CPU_YIELD       0x12
  54. #define CPU_MYID        0x16
  55. #define CPU_STATE       0x17
  56. #define CPU_SET_RTBA        0x18
  57. #define CPU_GET_RTBA        0x19
  58. #define MMU_TSB_CTX0        0x20
  59. #define MMU_TSB_CTXNON0     0x21
  60. #define MMU_DEMAP_PAGE      0x22
  61. #define MMU_DEMAP_CTX       0x23
  62. #define MMU_DEMAP_ALL       0x24
  63. #define MMU_MAP_PERM_ADDR   0x25
  64. #define MMU_FAULT_AREA_CONF 0x26
  65. #define MMU_ENABLE      0x27
  66. #define MMU_UNMAP_PERM_ADDR 0x28
  67. #define MMU_TSB_CTX0_INFO   0x29
  68. #define MMU_TSB_CTXNON0_INFO    0x2a
  69. #define MMU_FAULT_AREA_INFO 0x2b
  70. #define CPU_MONDO_SEND      0x42
  71. #define CONS_GETCHAR        0x60
  72. #define CONS_PUTCHAR        0x61
  73.  
  74. /**
  75.  * Performs a hyperfast hypervisor API call from the assembly language code.
  76.  * Expects the registers %o1-%o4 are properly filled with the arguments of the
  77.  * call.
  78.  *
  79.  * @param function_number   hyperfast call function number
  80.  */
  81. #define __HYPERCALL_FAST(function_number) \
  82.     set function_number, %o5; \
  83.     ta FAST_TRAP;
  84.    
  85. /**
  86.  * Performs a fast hypervisor API call from the assembly language code.
  87.  * Expects the registers %o1-%o4 are properly filled with the arguments of the
  88.  * call.
  89.  *
  90.  * @param sw_trap_number    software trap number
  91.  */
  92. #define __HYPERCALL_HYPERFAST(sw_trap_number) \
  93.     ta (sw_trap_number);
  94.  
  95.  
  96. #ifndef __ASM__
  97.  
  98. /*
  99.  * Macros to be used from the C-language code; __hypercall_fastN performs
  100.  * a fast hypervisor API call taking exactly N arguments.
  101.  */
  102.  
  103. #define __hypercall_fast0(function_number) \
  104.     __hypercall_fast(0, 0, 0, 0, 0, function_number)
  105. #define __hypercall_fast1(function_number, p1) \
  106.     __hypercall_fast(p1, 0, 0, 0, 0, function_number)
  107. #define __hypercall_fast2(function_number, p1, p2) \
  108.     __hypercall_fast(p1, p2, 0, 0, 0, function_number)
  109. #define __hypercall_fast3(function_number, p1, p2, p3) \
  110.     __hypercall_fast(p1, p2, p3, 0, 0, function_number)
  111. #define __hypercall_fast4(function_number, p1, p2, p3, p4) \
  112.     __hypercall_fast(p1, p2, p3, p4, 0, function_number)
  113. #define __hypercall_fast5(function_number, p1, p2, p3, p4, p5) \
  114.     __hypercall_fast(p1, p2, p3, p4, p5, function_number)
  115.  
  116. /**
  117.  * Performs a fast hypervisor API call.
  118.  *
  119.  * @param p1            the 1st argument of the hypervisor API call
  120.  * @param p2            the 2nd argument of the hypervisor API call
  121.  * @param p3            the 3rd argument of the hypervisor API call
  122.  * @param p4            the 4th argument of the hypervisor API call
  123.  * @param p5            the 5th argument of the hypervisor API call
  124.  * @param function_number   function number of the call
  125.  */
  126. static inline uint64_t
  127. __hypercall_fast(const uint64_t p1, const uint64_t p2, const uint64_t p3,
  128.     const uint64_t p4, const uint64_t p5, const uint64_t function_number)
  129. {
  130.     register uint64_t a6 asm("o5") = function_number;
  131.     register uint64_t a1 asm("o0") = p1;
  132.     register uint64_t a2 asm("o1") = p2;
  133.     register uint64_t a3 asm("o2") = p3;
  134.     register uint64_t a4 asm("o3") = p4;
  135.     register uint64_t a5 asm("o4") = p5;
  136.  
  137.     asm volatile (
  138.         "ta %7\n"
  139.         : "=r" (a1)
  140.         : "r" (a1), "r" (a2), "r" (a3), "r" (a4), "r" (a5), "r" (a6),
  141.           "i" (FAST_TRAP)
  142.         : "memory"
  143.     );
  144.    
  145.     return a1;
  146. }
  147.  
  148. /**
  149.  * Performs a hyperfast hypervisor API call.
  150.  *
  151.  * @param p1            the 1st argument of the hypervisor API call
  152.  * @param p2            the 2nd argument of the hypervisor API call
  153.  * @param p3            the 3rd argument of the hypervisor API call
  154.  * @param p4            the 4th argument of the hypervisor API call
  155.  * @param p5            the 5th argument of the hypervisor API call
  156.  * @param sw_trap_number    software trap number
  157.  */
  158. static inline uint64_t
  159. __hypercall_hyperfast(const uint64_t p1, const uint64_t p2, const uint64_t p3,
  160.     const uint64_t p4, const uint64_t p5, const uint64_t sw_trap_number)
  161. {
  162.     register uint64_t a1 asm("o0") = p1;
  163.     register uint64_t a2 asm("o1") = p2;
  164.     register uint64_t a3 asm("o2") = p3;
  165.     register uint64_t a4 asm("o3") = p4;
  166.     register uint64_t a5 asm("o4") = p5;
  167.  
  168.     asm volatile (
  169.         "ta %6\n"
  170.         : "=r" (a1)
  171.         : "r" (a1), "r" (a2), "r" (a3), "r" (a4), "r" (a5),
  172.           "i" (sw_trap_number)
  173.         : "memory"
  174.     );
  175.    
  176.     return a1;
  177. }
  178.  
  179. #endif /* ASM */
  180.  
  181. #endif
  182.  
  183. /** @}
  184.  */
  185.