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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 Jakub Jermar |
2 | * Copyright (C) 2005 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
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 |
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. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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 |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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 |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 |
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. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | #ifndef __amd64_ASM_H__ |
29 | #ifndef __amd64_ASM_H__ |
30 | #define __amd64_ASM_H__ |
30 | #define __amd64_ASM_H__ |
31 | 31 | ||
32 | #include <arch/types.h> |
32 | #include <arch/types.h> |
33 | #include <config.h> |
33 | #include <config.h> |
34 | 34 | ||
- | 35 | ||
35 | void asm_delay_loop(__u32 t); |
36 | void asm_delay_loop(__u32 t); |
36 | 37 | ||
37 | /* TODO: implement the real stuff */ |
38 | /* TODO: implement the real stuff */ |
38 | static inline __address get_stack_base(void) |
39 | static inline __address get_stack_base(void) |
39 | { |
40 | { |
40 | return NULL; |
41 | return NULL; |
41 | } |
42 | } |
42 | 43 | ||
43 | static inline void cpu_sleep(void) { __asm__("hlt"); }; |
44 | static inline void cpu_sleep(void) { __asm__("hlt"); }; |
44 | 45 | ||
- | 46 | ||
- | 47 | static inline __u8 inb(__u16 port) |
|
- | 48 | { |
|
- | 49 | __u8 out; |
|
- | 50 | ||
- | 51 | asm ( |
|
- | 52 | "mov %0, %%dx;" |
|
- | 53 | "inb %%dx,%%al;" |
|
- | 54 | "mov %%al, %1;" |
|
- | 55 | :"=m"(out) |
|
- | 56 | :"m"(port) |
|
- | 57 | :"dx","al" |
|
- | 58 | ); |
|
- | 59 | return out; |
|
- | 60 | } |
|
- | 61 | ||
- | 62 | static inline __u8 outb(__u16 port,__u8 b) |
|
- | 63 | { |
|
- | 64 | asm ( |
|
- | 65 | "mov %0,%%dx;" |
|
- | 66 | "mov %1,%%al;" |
|
- | 67 | "outb %%al,%%dx;" |
|
- | 68 | : |
|
- | 69 | :"m"( port), "m" (b) |
|
- | 70 | :"dx","al" |
|
- | 71 | ); |
|
- | 72 | } |
|
- | 73 | ||
- | 74 | /** Set priority level low |
|
- | 75 | * |
|
- | 76 | * Enable interrupts and return previous |
|
- | 77 | * value of EFLAGS. |
|
- | 78 | */ |
|
- | 79 | static inline pri_t cpu_priority_low(void) { |
|
- | 80 | pri_t v; |
|
- | 81 | __asm__ volatile ( |
|
- | 82 | "pushfq\n" |
|
- | 83 | "popq %0\n" |
|
- | 84 | "sti\n" |
|
- | 85 | : "=r" (v) |
|
- | 86 | ); |
|
- | 87 | return v; |
|
- | 88 | } |
|
- | 89 | ||
- | 90 | /** Set priority level high |
|
- | 91 | * |
|
- | 92 | * Disable interrupts and return previous |
|
- | 93 | * value of EFLAGS. |
|
- | 94 | */ |
|
- | 95 | static inline pri_t cpu_priority_high(void) { |
|
- | 96 | pri_t v; |
|
- | 97 | __asm__ volatile ( |
|
- | 98 | "pushfq\n" |
|
- | 99 | "popq %0\n" |
|
- | 100 | "cli\n" |
|
- | 101 | : "=r" (v) |
|
- | 102 | ); |
|
- | 103 | return v; |
|
- | 104 | } |
|
- | 105 | ||
- | 106 | /** Restore priority level |
|
- | 107 | * |
|
- | 108 | * Restore EFLAGS. |
|
- | 109 | */ |
|
- | 110 | static inline void cpu_priority_restore(pri_t pri) { |
|
- | 111 | __asm__ volatile ( |
|
- | 112 | "pushq %0\n" |
|
- | 113 | "popfq\n" |
|
- | 114 | : : "r" (pri) |
|
- | 115 | ); |
|
- | 116 | } |
|
- | 117 | ||
- | 118 | ||
45 | #endif |
119 | #endif |
46 | 120 |