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4024 | jermar | 1 | /* |
2 | * Copyright (c) 2009 Jakub Jermar |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | /** @file |
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30 | * @ingroup libsparc64 |
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31 | */ |
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32 | |||
33 | #ifndef LIBC_sparc64_DDI_H_ |
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34 | #define LIBC_sparc64_DDI_H_ |
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35 | |||
36 | #include <sys/types.h> |
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37 | #include <libarch/types.h> |
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38 | |||
39 | static inline memory_barrier(void) |
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40 | { |
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41 | asm volatile ("membar #LoadLoad | #StoreStore\n" ::: "memory"); |
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42 | } |
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43 | |||
44 | static inline void pio_write_8(ioport8_t *port, uint8_t v) |
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45 | { |
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46 | *port = v; |
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47 | memory_barrier(); |
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48 | } |
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49 | |||
50 | static inline void pio_write_16(ioport16_t *port, uint16_t v) |
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51 | { |
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52 | *port = v; |
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53 | memory_barrier(); |
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54 | } |
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55 | |||
56 | static inline void pio_write_32(ioport32_t *port, uint32_t v) |
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57 | { |
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58 | *port = v; |
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59 | memory_barrier(); |
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60 | } |
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61 | |||
62 | static inline uint8_t pio_read_8(ioport8_t *port) |
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63 | { |
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64 | uint8_t rv; |
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65 | |||
66 | rv = *port; |
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67 | memory_barrier(); |
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68 | |||
69 | return rv; |
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70 | } |
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71 | |||
72 | static inline uint16_t pio_read_16(ioport16_t *port) |
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73 | { |
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74 | uint16_t rv; |
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75 | |||
76 | rv = *port; |
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77 | memory_barrier(); |
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78 | |||
79 | return rv; |
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80 | } |
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81 | |||
82 | static inline uint32_t pio_read_32(ioport32_t *port) |
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83 | { |
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84 | uint32_t rv; |
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85 | |||
86 | rv = *port; |
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87 | memory_barrier(); |
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88 | |||
89 | return rv; |
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90 | } |
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91 | |||
92 | #endif |