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178 palkovsky 1
/*
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 * Copyright (C) 2001-2004 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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1702 cejka 29
 /** @addtogroup amd64 
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 * @{
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 */
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/** @file
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 */
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194 palkovsky 35
#ifndef __amd64_PM_H__
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#define __amd64_PM_H__
178 palkovsky 37
 
194 palkovsky 38
#ifndef __ASM__
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# include <arch/types.h>
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# include <typedefs.h>
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# include <arch/context.h>
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#endif
178 palkovsky 43
 
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#define IDT_ITEMS 64
1292 vana 45
#define GDT_ITEMS 8
178 palkovsky 46
 
1289 vana 47
 
178 palkovsky 48
#define NULL_DES    0
803 palkovsky 49
/* Warning: Do not reorder next items, unless you look into syscall.c!!! */
178 palkovsky 50
#define KTEXT_DES   1
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#define KDATA_DES   2
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#define UDATA_DES   3
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#define UTEXT_DES   4
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#define KTEXT32_DES     5
803 palkovsky 55
/* EndOfWarning */
194 palkovsky 56
#define TSS_DES     6
1292 vana 57
 
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#ifdef CONFIG_FB
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1289 vana 62
#define VESA_INIT_DES       8
1292 vana 63
#define VESA_INIT_SEGMENT 0x8000
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#undef GDT_ITEMS 
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#define GDT_ITEMS 9
178 palkovsky 66
 
1292 vana 67
#endif /*CONFIG_FB*/
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206 palkovsky 71
#define gdtselector(des)    ((des)<<3)
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#define idtselector(des)        ((des)<<4)
178 palkovsky 73
 
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#define PL_KERNEL   0
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#define PL_USER     3
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#define AR_PRESENT  (1<<7)
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#define AR_DATA     (2<<3)
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#define AR_CODE     (3<<3)
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#define AR_WRITABLE (1<<1)
188 palkovsky 81
#define AR_READABLE     (1<<1)
178 palkovsky 82
#define AR_TSS      (0x9)
206 palkovsky 83
#define AR_INTERRUPT    (0xe)
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#define AR_TRAP         (0xf)
178 palkovsky 85
 
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#define DPL_KERNEL  (PL_KERNEL<<5)
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#define DPL_USER    (PL_USER<<5)
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1187 jermar 89
#define TSS_BASIC_SIZE  104
1201 jermar 90
#define TSS_IOMAP_SIZE  (16*1024+1) /* 16K for bitmap + 1 terminating byte for convenience */
178 palkovsky 91
 
1203 jermar 92
#define IO_PORTS    (64*1024)
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194 palkovsky 94
#ifndef __ASM__
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178 palkovsky 96
struct descriptor {
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    unsigned limit_0_15: 16;
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    unsigned base_0_15: 16;
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    unsigned base_16_23: 8;
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    unsigned access: 8;
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    unsigned limit_16_19: 4;
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    unsigned available: 1;
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    unsigned longmode: 1;
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    unsigned special: 1;
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    unsigned granularity : 1;
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    unsigned base_24_31: 8;
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} __attribute__ ((packed));
1187 jermar 108
typedef struct descriptor descriptor_t;
178 palkovsky 109
 
206 palkovsky 110
struct tss_descriptor {
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    unsigned limit_0_15: 16;
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    unsigned base_0_15: 16;
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    unsigned base_16_23: 8;
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    unsigned type: 4;
1187 jermar 115
    unsigned : 1;
206 palkovsky 116
    unsigned dpl : 2;
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    unsigned present : 1;
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    unsigned limit_16_19: 4;
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    unsigned available: 1;
224 palkovsky 120
    unsigned : 2;
206 palkovsky 121
    unsigned granularity : 1;
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    unsigned base_24_31: 8;
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    unsigned base_32_63 : 32;
224 palkovsky 124
    unsigned  : 32;
206 palkovsky 125
} __attribute__ ((packed));
1187 jermar 126
typedef struct tss_descriptor tss_descriptor_t;
206 palkovsky 127
 
178 palkovsky 128
struct idescriptor {
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    unsigned offset_0_15: 16;
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    unsigned selector: 16;
206 palkovsky 131
    unsigned ist:3;
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    unsigned unused: 5;
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    unsigned type: 5;
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    unsigned dpl: 2;
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    unsigned present : 1;
178 palkovsky 136
    unsigned offset_16_31: 16;
224 palkovsky 137
    unsigned offset_32_63: 32;
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    unsigned  : 32;
178 palkovsky 139
} __attribute__ ((packed));
1187 jermar 140
typedef struct idescriptor idescriptor_t;
178 palkovsky 141
 
206 palkovsky 142
struct ptr_16_64 {
1780 jermar 143
    uint16_t limit;
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    uint64_t base;
206 palkovsky 145
} __attribute__ ((packed));
1187 jermar 146
typedef struct ptr_16_64 ptr_16_64_t;
178 palkovsky 147
 
273 palkovsky 148
struct ptr_16_32 {
1780 jermar 149
    uint16_t limit;
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    uint32_t base;
273 palkovsky 151
} __attribute__ ((packed));
1187 jermar 152
typedef struct ptr_16_32 ptr_16_32_t;
273 palkovsky 153
 
178 palkovsky 154
struct tss {
1780 jermar 155
    uint32_t reserve1;
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    uint64_t rsp0;
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    uint64_t rsp1;
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    uint64_t rsp2;
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    uint64_t reserve2;
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    uint64_t ist1;
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    uint64_t ist2;
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    uint64_t ist3;
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    uint64_t ist4;
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    uint64_t ist5;
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    uint64_t ist6;
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    uint64_t ist7;
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    uint64_t reserve3;
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    uint16_t reserve4;
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    uint16_t iomap_base;
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    uint8_t iomap[TSS_IOMAP_SIZE];
178 palkovsky 171
} __attribute__ ((packed));
1187 jermar 172
typedef struct tss tss_t;
178 palkovsky 173
 
1187 jermar 174
extern tss_t *tss_p;
178 palkovsky 175
 
1187 jermar 176
extern descriptor_t gdt[];
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extern idescriptor_t idt[];
178 palkovsky 178
 
1187 jermar 179
extern ptr_16_64_t gdtr;
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extern ptr_16_32_t bootstrap_gdtr;
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extern ptr_16_32_t protected_ap_gdtr;
206 palkovsky 182
 
178 palkovsky 183
extern void pm_init(void);
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1780 jermar 185
extern void gdt_tss_setbase(descriptor_t *d, uintptr_t base);
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extern void gdt_tss_setlimit(descriptor_t *d, uint32_t limit);
178 palkovsky 187
 
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extern void idt_init(void);
1780 jermar 189
extern void idt_setoffset(idescriptor_t *d, uintptr_t offset);
178 palkovsky 190
 
1187 jermar 191
extern void tss_initialize(tss_t *t);
178 palkovsky 192
 
194 palkovsky 193
#endif /* __ASM__ */
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178 palkovsky 195
#endif
1702 cejka 196
 
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 /** @}
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 */
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