Rev 1816 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1816 | decky | 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 xen32 |
||
| 30 | * @{ |
||
| 31 | */ |
||
| 32 | /** @file |
||
| 33 | */ |
||
| 34 | |||
| 35 | #ifndef __PM_H__ |
||
| 36 | #define __PM_H__ |
||
| 37 | |||
| 38 | #define IDT_ITEMS 64 |
||
| 39 | #define GDT_ITEMS 7 |
||
| 40 | |||
| 41 | #define NULL_DES 0 |
||
| 42 | #define KTEXT_DES 1 |
||
| 43 | #define KDATA_DES 2 |
||
| 44 | #define UTEXT_DES 3 |
||
| 45 | #define UDATA_DES 4 |
||
| 46 | #define TSS_DES 5 |
||
| 47 | #define TLS_DES 6 /* Pointer to Thread-Local-Storage data */ |
||
| 48 | |||
| 49 | #define selector(des) ((des) << 3) |
||
| 50 | |||
| 51 | #define PL_KERNEL 1 |
||
| 52 | #define PL_USER 3 |
||
| 53 | |||
| 54 | #define AR_PRESENT (1<<7) |
||
| 55 | #define AR_DATA (2<<3) |
||
| 56 | #define AR_CODE (3<<3) |
||
| 57 | #define AR_WRITABLE (1<<1) |
||
| 58 | #define AR_INTERRUPT (0xe) |
||
| 59 | #define AR_TSS (0x9) |
||
| 60 | |||
| 61 | #define DPL_KERNEL (PL_KERNEL<<5) |
||
| 62 | #define DPL_USER (PL_USER<<5) |
||
| 63 | |||
| 64 | #define TSS_BASIC_SIZE 104 |
||
| 65 | #define TSS_IOMAP_SIZE (16*1024+1) /* 16K for bitmap + 1 terminating byte for convenience */ |
||
| 66 | |||
| 67 | #define IO_PORTS (64*1024) |
||
| 68 | |||
| 69 | #ifndef __ASM__ |
||
| 70 | |||
| 71 | #include <arch/types.h> |
||
| 72 | #include <typedefs.h> |
||
| 73 | #include <arch/context.h> |
||
| 74 | |||
| 75 | struct ptr_16_32 { |
||
| 76 | uint16_t limit; |
||
| 77 | uint32_t base; |
||
| 78 | } __attribute__ ((packed)); |
||
| 79 | typedef struct ptr_16_32 ptr_16_32_t; |
||
| 80 | |||
| 81 | struct descriptor { |
||
| 82 | unsigned limit_0_15: 16; |
||
| 83 | unsigned base_0_15: 16; |
||
| 84 | unsigned base_16_23: 8; |
||
| 85 | unsigned access: 8; |
||
| 86 | unsigned limit_16_19: 4; |
||
| 87 | unsigned available: 1; |
||
| 88 | unsigned unused: 1; |
||
| 89 | unsigned special: 1; |
||
| 90 | unsigned granularity : 1; |
||
| 91 | unsigned base_24_31: 8; |
||
| 92 | } __attribute__ ((packed)); |
||
| 93 | typedef struct descriptor descriptor_t; |
||
| 94 | |||
| 95 | struct tss { |
||
| 96 | uint16_t link; |
||
| 97 | unsigned : 16; |
||
| 98 | uint32_t esp0; |
||
| 99 | uint16_t ss0; |
||
| 100 | unsigned : 16; |
||
| 101 | uint32_t esp1; |
||
| 102 | uint16_t ss1; |
||
| 103 | unsigned : 16; |
||
| 104 | uint32_t esp2; |
||
| 105 | uint16_t ss2; |
||
| 106 | unsigned : 16; |
||
| 107 | uint32_t cr3; |
||
| 108 | uint32_t eip; |
||
| 109 | uint32_t eflags; |
||
| 110 | uint32_t eax; |
||
| 111 | uint32_t ecx; |
||
| 112 | uint32_t edx; |
||
| 113 | uint32_t ebx; |
||
| 114 | uint32_t esp; |
||
| 115 | uint32_t ebp; |
||
| 116 | uint32_t esi; |
||
| 117 | uint32_t edi; |
||
| 118 | uint16_t es; |
||
| 119 | unsigned : 16; |
||
| 120 | uint16_t cs; |
||
| 121 | unsigned : 16; |
||
| 122 | uint16_t ss; |
||
| 123 | unsigned : 16; |
||
| 124 | uint16_t ds; |
||
| 125 | unsigned : 16; |
||
| 126 | uint16_t fs; |
||
| 127 | unsigned : 16; |
||
| 128 | uint16_t gs; |
||
| 129 | unsigned : 16; |
||
| 130 | uint16_t ldtr; |
||
| 131 | unsigned : 16; |
||
| 132 | unsigned : 16; |
||
| 133 | uint16_t iomap_base; |
||
| 134 | uint8_t iomap[TSS_IOMAP_SIZE]; |
||
| 135 | } __attribute__ ((packed)); |
||
| 136 | typedef struct tss tss_t; |
||
| 137 | |||
| 138 | extern ptr_16_32_t gdtr; |
||
| 139 | extern ptr_16_32_t bootstrap_gdtr; |
||
| 140 | extern ptr_16_32_t protected_ap_gdtr; |
||
| 141 | extern struct tss *tss_p; |
||
| 142 | |||
| 143 | extern descriptor_t gdt[]; |
||
| 144 | |||
| 145 | extern void pm_init(void); |
||
| 146 | |||
| 147 | extern void gdt_setbase(descriptor_t *d, uintptr_t base); |
||
| 148 | extern void gdt_setlimit(descriptor_t *d, uint32_t limit); |
||
| 149 | |||
| 1829 | decky | 150 | extern void traps_init(void); |
| 1816 | decky | 151 | |
| 152 | extern void tss_initialize(tss_t *t); |
||
| 153 | extern void set_tls_desc(uintptr_t tls); |
||
| 154 | |||
| 155 | #endif /* __ASM__ */ |
||
| 156 | |||
| 157 | #endif |
||
| 158 | |||
| 159 | /** @} |
||
| 160 | */ |