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| Rev | Author | Line No. | Line |
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| 3031 | serge | 1 | /** |
| 2 | * \file drm_stub.h |
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| 3 | * Stub support |
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| 4 | * |
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| 5 | * \author Rickard E. (Rik) Faith |
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| 6 | */ |
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| 7 | |||
| 8 | /* |
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| 9 | * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org |
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| 10 | * |
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| 11 | * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California. |
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| 12 | * All Rights Reserved. |
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| 13 | * |
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| 14 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 15 | * copy of this software and associated documentation files (the "Software"), |
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| 16 | * to deal in the Software without restriction, including without limitation |
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| 17 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 18 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 19 | * Software is furnished to do so, subject to the following conditions: |
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| 20 | * |
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| 21 | * The above copyright notice and this permission notice (including the next |
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| 22 | * paragraph) shall be included in all copies or substantial portions of the |
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| 23 | * Software. |
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| 24 | * |
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| 25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 26 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 27 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 28 | * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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| 29 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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| 30 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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| 31 | * DEALINGS IN THE SOFTWARE. |
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| 32 | */ |
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| 33 | |||
| 34 | #include |
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| 35 | |||
| 36 | #include |
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| 37 | #include |
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| 38 | |||
| 39 | struct va_format { |
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| 40 | const char *fmt; |
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| 41 | va_list *va; |
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| 42 | }; |
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| 43 | |||
| 44 | unsigned int drm_debug = 0; /* 1 to enable debug output */ |
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| 45 | EXPORT_SYMBOL(drm_debug); |
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| 46 | |||
| 47 | unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */ |
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| 48 | EXPORT_SYMBOL(drm_vblank_offdelay); |
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| 49 | |||
| 50 | unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */ |
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| 51 | EXPORT_SYMBOL(drm_timestamp_precision); |
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| 52 | |||
| 53 | int drm_err(const char *func, const char *format, ...) |
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| 54 | { |
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| 55 | struct va_format vaf; |
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| 56 | va_list args; |
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| 57 | int r; |
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| 58 | |||
| 59 | va_start(args, format); |
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| 60 | |||
| 61 | vaf.fmt = format; |
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| 62 | vaf.va = &args; |
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| 63 | |||
| 64 | r = printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* %pV", func, &vaf); |
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| 65 | |||
| 66 | va_end(args); |
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| 67 | |||
| 68 | return r; |
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| 69 | } |
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| 70 | EXPORT_SYMBOL(drm_err); |
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| 71 | |||
| 72 | void drm_ut_debug_printk(unsigned int request_level, |
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| 73 | const char *prefix, |
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| 74 | const char *function_name, |
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| 75 | const char *format, ...) |
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| 76 | { |
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| 77 | va_list args; |
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| 78 | |||
| 79 | // if (drm_debug & request_level) { |
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| 80 | // if (function_name) |
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| 81 | // printk(KERN_DEBUG "[%s:%s], ", prefix, function_name); |
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| 82 | // va_start(args, format); |
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| 83 | // vprintk(format, args); |
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| 84 | // va_end(args); |
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| 85 | // } |
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| 86 | } |
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| 87 | EXPORT_SYMBOL(drm_ut_debug_printk); |
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| 88 | |||
| 89 | /** |
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| 90 | * Compute size order. Returns the exponent of the smaller power of two which |
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| 91 | * is greater or equal to given number. |
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| 92 | * |
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| 93 | * \param size size. |
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| 94 | * \return order. |
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| 95 | * |
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| 96 | * \todo Can be made faster. |
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| 97 | */ |
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| 98 | int drm_order(unsigned long size) |
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| 99 | { |
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| 100 | int order; |
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| 101 | unsigned long tmp; |
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| 102 | |||
| 103 | for (order = 0, tmp = size >> 1; tmp; tmp >>= 1, order++) ; |
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| 104 | |||
| 105 | if (size & (size - 1)) |
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| 106 | ++order; |
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| 107 | |||
| 108 | return order; |
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| 109 | } |
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| 3260 | Serge | 110 | |
| 111 | extern int x86_clflush_size; |
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| 112 | |||
| 113 | static inline void clflush(volatile void *__p) |
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| 114 | { |
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| 115 | asm volatile("clflush %0" : "+m" (*(volatile char*)__p)); |
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| 116 | } |
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| 117 | |||
| 118 | void |
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| 119 | drm_clflush_virt_range(char *addr, unsigned long length) |
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| 120 | { |
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| 121 | char *end = addr + length; |
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| 122 | mb(); |
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| 123 | for (; addr < end; addr += x86_clflush_size) |
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| 124 | clflush(addr); |
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| 125 | clflush(end - 1); |
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| 126 | mb(); |
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| 127 | return; |
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| 128 | } |
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| 129 |