Subversion Repositories HelenOS

Rev

Rev 2927 | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed

  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 amd64
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef KERN_amd64_PM_H_
  36. #define KERN_amd64_PM_H_
  37.  
  38. #ifndef __ASM__
  39.     #include <arch/types.h>
  40.     #include <arch/context.h>
  41. #endif
  42.  
  43. #define IDT_ITEMS  64
  44. #define GDT_ITEMS  8
  45.  
  46.  
  47. #define NULL_DES     0
  48. /* Warning: Do not reorder the following items, unless you look into syscall.c! */
  49. #define KTEXT_DES    1
  50. #define KDATA_DES    2
  51. #define UDATA_DES    3
  52. #define UTEXT_DES    4
  53. #define KTEXT32_DES  5
  54. /* End of warning */
  55. #define TSS_DES      6
  56.  
  57. #ifdef CONFIG_FB
  58.  
  59. #define VESA_INIT_DES      8
  60. #define VESA_INIT_SEGMENT  0x8000
  61.  
  62. #undef GDT_ITEMS
  63. #define GDT_ITEMS  9
  64.  
  65. #endif /* CONFIG_FB */
  66.  
  67. #define gdtselector(des)  ((des) << 3)
  68. #define idtselector(des)  ((des) << 4)
  69.  
  70. #define PL_KERNEL  0
  71. #define PL_USER    3
  72.  
  73. #define AR_PRESENT   ( 1 << 7)
  74. #define AR_DATA       (2 << 3)
  75. #define AR_CODE       (3 << 3)
  76. #define AR_WRITABLE   (1 << 1)
  77. #define AR_READABLE   (1 << 1)
  78. #define AR_TSS        (0x09)
  79. #define AR_INTERRUPT  (0x0e)
  80. #define AR_TRAP       (0x0f)
  81.  
  82. #define DPL_KERNEL  (PL_KERNEL << 5)
  83. #define DPL_USER    (PL_USER << 5)
  84.  
  85. #define TSS_BASIC_SIZE  104
  86. #define TSS_IOMAP_SIZE  (16 * 1024 + 1)  /* 16K for bitmap + 1 terminating byte for convenience */
  87.  
  88. #define IO_PORTS  (64 * 1024)
  89.  
  90. #ifndef __ASM__
  91.  
  92. typedef struct {
  93.     unsigned limit_0_15: 16;
  94.     unsigned base_0_15: 16;
  95.     unsigned base_16_23: 8;
  96.     unsigned access: 8;
  97.     unsigned limit_16_19: 4;
  98.     unsigned available: 1;
  99.     unsigned longmode: 1;
  100.     unsigned special: 1;
  101.     unsigned granularity : 1;
  102.     unsigned base_24_31: 8;
  103. } __attribute__ ((packed)) descriptor_t;
  104.  
  105. typedef struct {
  106.     unsigned limit_0_15: 16;
  107.     unsigned base_0_15: 16;
  108.     unsigned base_16_23: 8;
  109.     unsigned type: 4;
  110.     unsigned : 1;
  111.     unsigned dpl : 2;
  112.     unsigned present : 1;
  113.     unsigned limit_16_19: 4;
  114.     unsigned available: 1;
  115.     unsigned : 2;
  116.     unsigned granularity : 1;
  117.     unsigned base_24_31: 8;
  118.     unsigned base_32_63 : 32;
  119.     unsigned  : 32;
  120. } __attribute__ ((packed)) tss_descriptor_t;
  121.  
  122. typedef struct {
  123.     unsigned offset_0_15: 16;
  124.     unsigned selector: 16;
  125.     unsigned ist:3;
  126.     unsigned unused: 5;
  127.     unsigned type: 5;
  128.     unsigned dpl: 2;
  129.     unsigned present : 1;
  130.     unsigned offset_16_31: 16;
  131.     unsigned offset_32_63: 32;
  132.     unsigned  : 32;
  133. } __attribute__ ((packed)) idescriptor_t;
  134.  
  135. typedef struct {
  136.     uint16_t limit;
  137.     uint64_t base;
  138. } __attribute__ ((packed)) ptr_16_64_t;
  139.  
  140. typedef struct {
  141.     uint16_t limit;
  142.     uint32_t base;
  143. } __attribute__ ((packed)) ptr_16_32_t;
  144.  
  145. typedef struct {
  146.     uint32_t reserve1;
  147.     uint64_t rsp0;
  148.     uint64_t rsp1;
  149.     uint64_t rsp2;
  150.     uint64_t reserve2;
  151.     uint64_t ist1;
  152.     uint64_t ist2;
  153.     uint64_t ist3;
  154.     uint64_t ist4;
  155.     uint64_t ist5;
  156.     uint64_t ist6;
  157.     uint64_t ist7;
  158.     uint64_t reserve3;
  159.     uint16_t reserve4;
  160.     uint16_t iomap_base;
  161.     uint8_t iomap[TSS_IOMAP_SIZE];
  162. } __attribute__ ((packed)) tss_t;
  163.  
  164. extern tss_t *tss_p;
  165.  
  166. extern descriptor_t gdt[];
  167. extern idescriptor_t idt[];
  168.  
  169. extern ptr_16_64_t gdtr;
  170. extern ptr_16_32_t bootstrap_gdtr;
  171. extern ptr_16_32_t protected_ap_gdtr;
  172.  
  173. extern void pm_init(void);
  174.  
  175. extern void gdt_tss_setbase(descriptor_t *d, uintptr_t base);
  176. extern void gdt_tss_setlimit(descriptor_t *d, uint32_t limit);
  177.  
  178. extern void idt_init(void);
  179. extern void idt_setoffset(idescriptor_t *d, uintptr_t offset);
  180.  
  181. extern void tss_initialize(tss_t *t);
  182.  
  183. #endif /* __ASM__ */
  184.  
  185. #endif
  186.  
  187. /** @}
  188.  */
  189.