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本帖最后由 yyj 于 2018-1-30 11:01 编辑 2 p! q* U7 ]+ t
- [code]EDMA sample test application
( x, x+ I1 s3 X* _# O' _ - /*
2 J. Y- S* Z: w7 [+ ^; P& J1 H - * edma_test.c$ v9 C" {6 x* p2 s
- *
1 y' ]% P% @3 r" } m - * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.% W! w8 {0 c! \) m! I( D
- *
+ |5 O5 N; J* e* o - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
; N2 }* H6 ?8 V' z. i [- v - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
: ~8 o: |3 g. I. W1 `# l4 H - * TO CHANGE.; d7 F+ R$ U. c P+ v! C% R
- *$ V" t2 o- {; d; o; @- m- V$ P3 G
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/& n( h9 {2 Z3 g
- *
0 p3 J. i) Z1 f5 B0 D - * This program is free software; you can redistribute it and/or9 C: A- U$ Z0 r
- * modify it under the terms of the GNU General Public License as) k8 I; T2 O) |1 Y. K7 N
- * published by the Free Software Foundation version 2.. A! @- S7 C7 g
- *
6 Y0 Q! ]4 O* W1 A: ?3 `7 ^ - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
4 n" B; d" I% U6 D' Y0 E - * kind, whether express or implied; without even the implied warranty+ `# [2 v5 [) F) I( i
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the0 P; ^2 u1 }9 U3 L
- * GNU General Public License for more details.
. ^; w& A. Z* A$ N0 v6 L, C - */
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( `$ V" b+ r o: G5 d) K- #include <linux/module.h>
5 Y, k! ^. a) G3 f - #include <linux/init.h>
$ r, I, d- Z q9 b+ u: X# R$ V - #include <linux/errno.h>/ s/ Y, r9 ?! J) u
- #include <linux/types.h>
1 [! k2 z1 z+ g5 }+ B+ F, Y8 ^: G - #include <linux/interrupt.h>; u8 f( Y* {3 W' k
- #include <asm/io.h>5 n3 u" s. s- M+ |1 P, i! d
- #include <linux/moduleparam.h>
$ |5 ~# a9 ?/ h# ~ - #include <linux/sysctl.h>+ m3 T% k, Q6 }
- #include <linux/mm.h>
' `: R$ }- E+ U - #include <linux/dma-mapping.h>
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& r- r3 D* d% }2 a% b2 ~- #include <mach/memory.h>
: J) F0 L( o$ m W* p- k - #include <mach/hardware.h>: C1 m4 b+ n/ l4 {
- #include <mach/irqs.h>
- }; \& v7 r4 m7 e4 P - #include <asm/hardware/edma.h>1 |% D1 \ T- e+ U0 D, o& X" ^
. { B, [' q! s# Q G+ |- #undef EDMA3_DEBUG
2 j0 r8 F1 v% p M - /*#define EDMA3_DEBUG*/
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8 e$ W- F* y5 N- #ifdef EDMA3_DEBUG' x0 }- X2 ]$ R, Y! N0 ]
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)) }0 J. U: Q& o" O( ]
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
' O7 V1 |% b) [ - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
$ }& `# `0 a& F5 V - #else+ ]$ O/ N5 l h! X. W4 x
- #define DMA_PRINTK( x... )0 ^2 n: K7 b/ }
- #define DMA_FN_IN5 @, ^9 F# L8 W1 X
- #define DMA_FN_OUT* F5 S8 _7 B% K2 ]
- #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768), U. q/ D4 Z/ X
- #define STATIC_SHIFT 3
- {! s# a, g0 S. Y' D6 N& Q - #define TCINTEN_SHIFT 20, t7 a3 b8 X- M
- #define ITCINTEN_SHIFT 21
- s) N: `4 ?# i5 d. r - #define TCCHEN_SHIFT 22/ u" Z/ `! R7 r6 t" y7 s$ s
- #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;* U1 u* f& X% ^ f: C4 \6 N
- static volatile int irqraised2 = 0;
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, }* D% j" K8 g. l9 Z _2 U
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
) V$ n8 Q+ j# t( X3 Z - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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- dma_addr_t dmaphyssrc1 = 0;
4 t9 e9 Y7 @# E - dma_addr_t dmaphyssrc2 = 0;
8 ]0 x/ ]- B6 {0 o- z3 r- N - dma_addr_t dmaphysdest1 = 0;: q# \) Y% j6 n
- dma_addr_t dmaphysdest2 = 0;: K) f' b! s0 }7 ` _, r# X+ B
% V" B# j L( u( P9 ?8 \- char *dmabufsrc1 = NULL;) k, Q. z: I7 o/ W: u6 K6 p0 \
- char *dmabufsrc2 = NULL;
: E' c3 S. V! U8 r7 U+ J: F/ R5 V ` - char *dmabufdest1 = NULL;
3 O' g6 X$ k, n - char *dmabufdest2 = NULL;, w" @6 i5 x$ o O- p
- / P$ Q; W; P: N8 d2 j- p
- static int acnt = 512;' B h! v2 r) o- P% V
- static int bcnt = 8;( j. C' E1 K- a- w( p/ {: K
- static int ccnt = 8;
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' U/ o9 G2 n( r( L7 c' j- module_param(acnt, int, S_IRUGO);
4 q4 {$ u P+ Y* g* I" _ - module_param(bcnt, int, S_IRUGO);
$ `6 w* D/ L1 w) |0 C - module_param(ccnt, int, S_IRUGO);
复制代码
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# H- \3 m" t4 H/ o1 f/ d 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
) z- x( _3 f) z$ `5 earm-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。5 I# j/ _ l# p- ^: a2 \
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。/ A9 h. e! \5 g$ M" Y/ B; X1 ~
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