130 lines
3.2 KiB
C
130 lines
3.2 KiB
C
/**
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* \file drm_stub.h
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* Stub support
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*
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* \author Rickard E. (Rik) Faith <faith@valinux.com>
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*/
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/*
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* Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
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*
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* Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <drm/drmP.h>
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struct va_format {
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const char *fmt;
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va_list *va;
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};
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unsigned int drm_debug = 0; /* 1 to enable debug output */
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EXPORT_SYMBOL(drm_debug);
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unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */
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EXPORT_SYMBOL(drm_vblank_offdelay);
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unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */
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EXPORT_SYMBOL(drm_timestamp_precision);
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int drm_err(const char *func, const char *format, ...)
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{
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struct va_format vaf;
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va_list args;
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int r;
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va_start(args, format);
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vaf.fmt = format;
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vaf.va = &args;
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r = printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* %pV", func, &vaf);
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va_end(args);
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return r;
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}
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EXPORT_SYMBOL(drm_err);
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void drm_ut_debug_printk(unsigned int request_level,
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const char *prefix,
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const char *function_name,
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const char *format, ...)
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{
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va_list args;
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// if (drm_debug & request_level) {
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// if (function_name)
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// printk(KERN_DEBUG "[%s:%s], ", prefix, function_name);
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// va_start(args, format);
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// vprintk(format, args);
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// va_end(args);
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// }
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}
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EXPORT_SYMBOL(drm_ut_debug_printk);
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/**
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* Compute size order. Returns the exponent of the smaller power of two which
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* is greater or equal to given number.
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*
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* \param size size.
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* \return order.
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*
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* \todo Can be made faster.
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*/
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int drm_order(unsigned long size)
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{
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int order;
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unsigned long tmp;
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for (order = 0, tmp = size >> 1; tmp; tmp >>= 1, order++) ;
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if (size & (size - 1))
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++order;
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return order;
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}
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extern int x86_clflush_size;
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static inline void clflush(volatile void *__p)
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{
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asm volatile("clflush %0" : "+m" (*(volatile char*)__p));
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}
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void
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drm_clflush_virt_range(char *addr, unsigned long length)
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{
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char *end = addr + length;
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mb();
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for (; addr < end; addr += x86_clflush_size)
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clflush(addr);
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clflush(end - 1);
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mb();
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return;
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}
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