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本帖最后由 yyj 于 2018-1-30 11:01 编辑
( \; ~- S) L2 A- f5 Z# @8 C! ~( {/ `- [code]EDMA sample test application
6 C2 s# f, I; E$ W - /*
0 z& [) u: [) v& d7 k+ L6 p - * edma_test.c# b+ a. y3 L7 Z4 U9 H
- *
. C( B0 ^5 j# \, ^' Q* m/ s9 g - * brief EDMA3 Test Application) d! D* t- Z( W& t7 w. _. ^
- *3 N" V0 [1 E3 y! t! s+ I4 e
- * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE* [% [# o. S3 \, t+ |' A
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
' T1 E- o$ j* ]( ? - * TO CHANGE.% ]& M; F* I- R4 ?
- */ O1 F$ Q3 t0 @
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
' | Z0 h# z' Z) X - *
. v8 j+ F/ R" j3 ? - * This program is free software; you can redistribute it and/or- c2 E9 Z0 @5 ^- p7 O0 D+ i' V& b
- * modify it under the terms of the GNU General Public License as
- a5 {% `2 ^- i1 {8 h - * published by the Free Software Foundation version 2.( h4 g# X1 q) O7 q; }. `
- *9 O! o9 A+ O( p8 h/ [3 I
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
" ^0 {7 f, T5 M; R7 J - * kind, whether express or implied; without even the implied warranty
5 A& b; A+ I) G; G - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
$ d+ I) j% t. a2 m- n. f - * GNU General Public License for more details.
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1 u$ ?8 b1 D8 t9 |& n- #include <linux/module.h>. \" k3 L) v( f, E3 M
- #include <linux/init.h>
. { w D2 n) b6 f! I, Q - #include <linux/errno.h>
/ N+ x u4 W6 ~+ a" W+ {& I - #include <linux/types.h>2 s# R* U% g; c* I& k
- #include <linux/interrupt.h>
) V& P& Z7 T6 }' Y8 `. n- g- c* L( x - #include <asm/io.h>
' \% `9 r! G4 v, G. ~4 N: @ - #include <linux/moduleparam.h>
# Z) o% Y3 ~' Y' N- c* P/ v - #include <linux/sysctl.h>
9 H. H1 Z% ^* O! K3 o - #include <linux/mm.h>! t, c& Z9 b% i" x
- #include <linux/dma-mapping.h>
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- #include <mach/memory.h>
5 h9 V4 W$ t" `( y& B; d - #include <mach/hardware.h>/ G6 b1 g5 E3 O
- #include <mach/irqs.h>
& I/ V+ i8 i- J6 C - #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG
7 N7 R4 k: I f% m+ N( |# d: k1 O7 y" s - /*#define EDMA3_DEBUG*/
$ t* R* S s1 o4 ~3 \ - 3 A1 z* T; k/ v1 p0 ^; }
- #ifdef EDMA3_DEBUG+ Q6 R8 |; v0 Q# v& a! q) n9 D
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
) X; O) v1 N* D1 Q - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
7 c3 W3 z- ^" D/ e: _& E - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)' d* m5 i. Z) f0 A: L' _6 A4 P4 ^
- #else8 E" I! g; W4 T4 d# [
- #define DMA_PRINTK( x... )+ j: q3 x1 K3 r7 x0 K
- #define DMA_FN_IN
m) @, _4 v9 e: v - #define DMA_FN_OUT
- X! I& J% r) V$ c3 s. f* Z/ S - #endif$ S `5 A1 y* _
2 D' n& m1 [1 \ `6 v- #define MAX_DMA_TRANSFER_IN_BYTES (32768) ?8 S7 q( c: p/ {$ W# {7 I
- #define STATIC_SHIFT 3
5 |2 g: j: _3 u3 i( m" V - #define TCINTEN_SHIFT 20
; k4 ]6 L2 v7 {9 e5 @ - #define ITCINTEN_SHIFT 211 w5 _* U k R# Z& }7 }/ a
- #define TCCHEN_SHIFT 22
5 ^% C6 x X0 c6 P, r o" V& j; L - #define ITCCHEN_SHIFT 238 R8 B5 a% | g6 V9 R
) g0 m u8 o, N; h& I7 ^6 `, b- static volatile int irqraised1 = 0;/ y1 Z8 u8 c: n2 c2 b
- static volatile int irqraised2 = 0;
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- g+ L. ~4 q) }+ T- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( B5 M. R, R2 f. s5 c
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
, r4 ?- q! a) r# b& ] - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); }% v/ P- G/ t0 V2 _; j! c7 M @
- " ^, k( ^( N3 q4 |+ ~* y5 ?) y1 v2 m
- dma_addr_t dmaphyssrc1 = 0;% r! o. o' E8 j$ R
- dma_addr_t dmaphyssrc2 = 0;" f7 ]- ?5 G, o& A0 w0 _( \- j
- dma_addr_t dmaphysdest1 = 0;4 a7 Q3 |3 }0 x2 j
- dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;$ `9 J+ v7 }+ D' \# I
- char *dmabufsrc2 = NULL;
Q. C- x+ e8 @$ c- j3 f - char *dmabufdest1 = NULL;
8 u' W$ W2 X" R$ l# P4 D( D - char *dmabufdest2 = NULL;
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- static int acnt = 512;* {2 {- }) O' M% z8 I. I
- static int bcnt = 8;8 g. O1 _9 a. t0 B
- static int ccnt = 8;' U) N- W' v$ H4 n' g* w
6 {; u5 y+ X/ W7 d1 G; t z" L- module_param(acnt, int, S_IRUGO);* v0 _7 L% I. v u' y
- module_param(bcnt, int, S_IRUGO);/ a8 J' I( {% A: _% h0 K; w+ T
- module_param(ccnt, int, S_IRUGO);
复制代码
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这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分,我在编译的过程中是用" o! B% ^6 p+ U# f9 ?. m" D
arm-none-linux-gnueabi-gcc -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译,但是报的错误特别多,我又试着一个函数一个函数往进加,仍然是很多错误。8 E+ ~8 X2 _& L6 {% U$ H& @
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
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