/* * Port on Texas Instruments TMS320C6x architecture * * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef _ASM_C6X_DELAY_H #define _ASM_C6X_DELAY_H #include <linux/kernel.h> extern unsigned int ticks_per_ns_scaled; static inline void __delay(unsigned long loops) { uint32_t tmp; /* 6 cycles per loop */ asm volatile (" mv .s1 %0,%1\n" "0: [%1] b .s1 0b\n" " add .l1 -6,%0,%0\n" " cmplt .l1 1,%0,%1\n" " nop 3\n" : "+a"(loops), "=A"(tmp)); } static inline void _c6x_tickdelay(unsigned int x) { uint32_t cnt, endcnt; asm volatile (" mvc .s2 TSCL,%0\n" " add .s2x %0,%1,%2\n" " || mvk .l2 1,B0\n" "0: [B0] b .s2 0b\n" " mvc .s2 TSCL,%0\n" " sub .s2 %0,%2,%0\n" " cmpgt .l2 0,%0,B0\n" " nop 2\n" : "=b"(cnt), "+a"(x), "=b"(endcnt) : : "B0"); } /* use scaled math to avoid slow division */ #define C6X_NDELAY_SCALE 10 static inline void _ndelay(unsigned int n) { _c6x_tickdelay((ticks_per_ns_scaled * n) >> C6X_NDELAY_SCALE); } static inline void _udelay(unsigned int n) { while (n >= 10) { _ndelay(10000); n -= 10; } while (n-- > 0) _ndelay(1000); } #define udelay(x) _udelay((unsigned int)(x)) #define ndelay(x) _ndelay((unsigned int)(x)) #endif /* _ASM_C6X_DELAY_H */
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Kbuild | File | 865 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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bitops.h | File | 2.17 KB | 0644 |
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bug.h | File | 705 B | 0644 |
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cache.h | File | 3.1 KB | 0644 |
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cacheflush.h | File | 2.05 KB | 0644 |
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checksum.h | File | 947 B | 0644 |
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clock.h | File | 3.51 KB | 0644 |
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cmpxchg.h | File | 1.57 KB | 0644 |
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delay.h | File | 1.67 KB | 0644 |
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dma-mapping.h | File | 911 B | 0644 |
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dscr.h | File | 909 B | 0644 |
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elf.h | File | 3.18 KB | 0644 |
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flat.h | File | 677 B | 0644 |
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ftrace.h | File | 97 B | 0644 |
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hardirq.h | File | 572 B | 0644 |
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irq.h | File | 1.59 KB | 0644 |
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irqflags.h | File | 1.67 KB | 0644 |
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linkage.h | File | 497 B | 0644 |
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megamod-pic.h | File | 213 B | 0644 |
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module.h | File | 639 B | 0644 |
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page.h | File | 312 B | 0644 |
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pgtable.h | File | 2.29 KB | 0644 |
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processor.h | File | 3.31 KB | 0644 |
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procinfo.h | File | 673 B | 0644 |
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ptrace.h | File | 998 B | 0644 |
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sections.h | File | 287 B | 0644 |
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setup.h | File | 914 B | 0644 |
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soc.h | File | 929 B | 0644 |
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special_insns.h | File | 1.82 KB | 0644 |
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string.h | File | 616 B | 0644 |
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switch_to.h | File | 992 B | 0644 |
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syscall.h | File | 2.2 KB | 0644 |
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syscalls.h | File | 1.73 KB | 0644 |
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thread_info.h | File | 2.63 KB | 0644 |
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timer64.h | File | 154 B | 0644 |
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timex.h | File | 867 B | 0644 |
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tlb.h | File | 192 B | 0644 |
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traps.h | File | 1.29 KB | 0644 |
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uaccess.h | File | 2.14 KB | 0644 |
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unaligned.h | File | 4.63 KB | 0644 |
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