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1 | /* |
1 | /* |
2 | * Copyright (c) 2003-2004 Jakub Jermar |
2 | * Copyright (c) 2003-2004 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 | /** @addtogroup mips32 |
29 | /** @addtogroup mips32 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef KERN_mips32_ASM_H_ |
35 | #ifndef KERN_mips32_ASM_H_ |
36 | #define KERN_mips32_ASM_H_ |
36 | #define KERN_mips32_ASM_H_ |
37 | 37 | ||
38 | #include <arch/types.h> |
38 | #include <arch/types.h> |
39 | #include <config.h> |
39 | #include <config.h> |
40 | 40 | ||
41 | 41 | ||
42 | static inline void cpu_sleep(void) |
42 | static inline void cpu_sleep(void) |
43 | { |
43 | { |
44 | /* Most of the simulators do not support */ |
44 | /* Most of the simulators do not support */ |
45 | /* asm volatile ("wait"); */ |
45 | /* asm volatile ("wait"); */ |
46 | } |
46 | } |
47 | 47 | ||
48 | /** Return base address of current stack |
48 | /** Return base address of current stack |
49 | * |
49 | * |
50 | * Return the base address of the current stack. |
50 | * Return the base address of the current stack. |
51 | * The stack is assumed to be STACK_SIZE bytes long. |
51 | * The stack is assumed to be STACK_SIZE bytes long. |
52 | * The stack must start on page boundary. |
52 | * The stack must start on page boundary. |
53 | */ |
53 | */ |
54 | static inline uintptr_t get_stack_base(void) |
54 | static inline uintptr_t get_stack_base(void) |
55 | { |
55 | { |
56 | uintptr_t v; |
56 | uintptr_t v; |
57 | 57 | ||
58 | asm volatile ( |
58 | asm volatile ( |
59 | "and %0, $29, %1\n" |
59 | "and %0, $29, %1\n" |
60 | : "=r" (v) |
60 | : "=r" (v) |
61 | : "r" (~(STACK_SIZE-1)) |
61 | : "r" (~(STACK_SIZE-1)) |
62 | ); |
62 | ); |
63 | 63 | ||
64 | return v; |
64 | return v; |
65 | } |
65 | } |
66 | 66 | ||
67 | extern void cpu_halt(void); |
67 | extern void cpu_halt(void); |
68 | extern void asm_delay_loop(uint32_t t); |
68 | extern void asm_delay_loop(uint32_t t); |
69 | extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg, |
69 | extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg, |
70 | uintptr_t entry); |
70 | uintptr_t entry); |
71 | 71 | ||
72 | extern ipl_t interrupts_disable(void); |
72 | extern ipl_t interrupts_disable(void); |
73 | extern ipl_t interrupts_enable(void); |
73 | extern ipl_t interrupts_enable(void); |
74 | extern void interrupts_restore(ipl_t ipl); |
74 | extern void interrupts_restore(ipl_t ipl); |
75 | extern ipl_t interrupts_read(void); |
75 | extern ipl_t interrupts_read(void); |
76 | extern void asm_delay_loop(uint32_t t); |
76 | extern void asm_delay_loop(uint32_t t); |
77 | 77 | ||
78 | static inline void pio_write_8(ioport8_t *port, uint8_t v) |
78 | static inline void pio_write_8(ioport8_t *port, uint8_t v) |
79 | { |
79 | { |
- | 80 | *port = v; |
|
- | 81 | } |
|
- | 82 | ||
- | 83 | static inline void pio_write_16(ioport16_t *port, uint16_t v) |
|
- | 84 | { |
|
80 | /* XXX */ |
85 | *port = v; |
- | 86 | } |
|
- | 87 | ||
- | 88 | static inline void pio_write_32(ioport32_t *port, uint32_t v) |
|
- | 89 | { |
|
- | 90 | *port = v; |
|
81 | } |
91 | } |
82 | 92 | ||
83 | static inline uint8_t pio_read_8(ioport8_t *port) |
93 | static inline uint8_t pio_read_8(ioport8_t *port) |
84 | { |
94 | { |
85 | return 0; /* XXX */ |
95 | return *port; |
- | 96 | } |
|
- | 97 | ||
- | 98 | static inline uint16_t pio_read_16(ioport16_t *port) |
|
- | 99 | { |
|
- | 100 | return *port; |
|
- | 101 | } |
|
- | 102 | ||
- | 103 | static inline uint32_t pio_read_32(ioport32_t *port) |
|
- | 104 | { |
|
- | 105 | return *port; |
|
86 | } |
106 | } |
87 | 107 | ||
88 | #endif |
108 | #endif |
89 | 109 | ||
90 | /** @} |
110 | /** @} |
91 | */ |
111 | */ |
92 | 112 |