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本帖最后由 yyj 于 2018-1-30 11:01 编辑
, C5 a3 u$ N/ V) w1 L% h# r- [code]EDMA sample test application
$ f: J* m3 u& _ - /*+ Y- p5 ^2 O" \" W" _% E5 _4 H# c: ~
- * edma_test.c
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, d7 I$ T9 K" z- E - * brief EDMA3 Test Application4 ?( o3 y- V0 ^+ l" x
- *
2 Z! ], [+ i% }! V( {2 L& Q - * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE; @( }; W' E) r1 {- c9 d% e; l
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT/ u/ m3 l) y* P) a& H
- * TO CHANGE.
* w: }% O0 D3 k" G - *
, A0 s6 p* s2 N& } l; @ - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/$ e6 M* Y% j& L' i1 `3 Z& G6 L, M
- *9 |. @7 Q/ g( c- n: g
- * This program is free software; you can redistribute it and/or& s1 ^& M) H2 J8 l0 I) K
- * modify it under the terms of the GNU General Public License as- g* y3 O p9 U" r* h
- * published by the Free Software Foundation version 2.. _6 ^, s3 i) u4 v
- *
; Y: y. u7 B# O+ P1 T. T - * This program is distributed "as is" WITHOUT ANY WARRANTY of any4 M) S! C' L! v
- * kind, whether express or implied; without even the implied warranty- m: w+ S, E0 G3 T* {
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- s1 @% R; R( f) C3 H4 q - * GNU General Public License for more details.4 a a5 l- W2 G. Z( a
- */6 c7 J4 K9 y) ]6 _, d0 @
- * N, M9 W4 l" p2 m( C
- #include <linux/module.h>
% R B" ?$ L) W9 @. p3 Y1 U - #include <linux/init.h>
, Y, Q [: R0 x% H8 w - #include <linux/errno.h>" T' `! L7 |. O4 ]5 |! x
- #include <linux/types.h>0 {: m% E3 @6 P* {+ F
- #include <linux/interrupt.h>
/ K4 _$ }+ k- M5 L2 g - #include <asm/io.h>( K( p1 j, G( _1 n
- #include <linux/moduleparam.h>
' W* {7 f$ b1 ?0 V5 n0 X# F - #include <linux/sysctl.h>$ W0 f" F; m$ `1 f) T9 Y+ Z5 x
- #include <linux/mm.h>
3 R# X5 S: I! @1 ^/ F4 p - #include <linux/dma-mapping.h>
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- #include <mach/memory.h>
3 J& e! x5 J$ c! U - #include <mach/hardware.h>
: z, @+ Q% P9 X6 {/ R% \# x3 F: B - #include <mach/irqs.h>/ d# j9 p7 l5 f4 K1 v4 W+ w1 `
- #include <asm/hardware/edma.h>
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7 E% V1 |/ Z* I7 O+ V, E- #undef EDMA3_DEBUG
+ H# }( A2 i7 x) ^, F2 G - /*#define EDMA3_DEBUG*/
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# ^% @$ g2 B: `: t$ b- #ifdef EDMA3_DEBUG( W! K5 E! M7 t( ]. @
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
0 Q% g5 { s- o+ `+ _) n, z - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
, t+ V7 A$ w) b4 V& h - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
& l7 _, D. D- B I/ v- ?- s6 R - #else
( l+ m6 i9 t& C3 H: q - #define DMA_PRINTK( x... )8 X5 x& Y: I7 h
- #define DMA_FN_IN
0 a% v% B( e, D* v: G$ f$ d - #define DMA_FN_OUT
; I8 W' Q, C' \* e' [/ e3 {$ _" d - #endif- x: T, \7 @- Y }8 \+ g+ V: I
- 3 Z3 T# E% C3 [7 u; y; ?
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)( G& [' _6 u; F
- #define STATIC_SHIFT 3) A3 B, ~6 X3 ~* ~/ {
- #define TCINTEN_SHIFT 20
! \: [3 k* A! |0 h4 l6 X/ i9 o" O - #define ITCINTEN_SHIFT 21
6 p8 B& b2 f( i g8 K: A; L - #define TCCHEN_SHIFT 22% X* ?! V8 s2 X8 s
- #define ITCCHEN_SHIFT 23
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H. W5 B. d, f( }; H2 y# i- static volatile int irqraised1 = 0;
" }) b" q* A- c/ ^ {) [0 i" d - static volatile int irqraised2 = 0;" K0 Z0 D3 d( Y, T& X5 X
3 u# i) b% S8 A9 O5 B) E- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: ?8 i" Z. [+ }9 R' D" b0 M$ w
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 S5 Z9 {1 A6 j9 j& m8 m- U0 N, s( e
- 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;. `9 J, C' i4 ?+ o+ \1 t7 ^
- dma_addr_t dmaphyssrc2 = 0;
5 g$ Q1 ] M' ]- a- U+ U" q - dma_addr_t dmaphysdest1 = 0;
6 a) k, d2 }1 W1 J& K7 r3 n r( s - dma_addr_t dmaphysdest2 = 0;0 A! H3 _$ s) u6 J" c
e% K3 w; a/ v! S1 j, z! L% t% ^1 T9 b- char *dmabufsrc1 = NULL;
! V( _& W# p2 U) O: B* s( z! g4 x5 c) a - char *dmabufsrc2 = NULL;& v# F; C, L j3 b
- char *dmabufdest1 = NULL;
! U! Q* R, @* j; j) N6 _ - char *dmabufdest2 = NULL;
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- static int acnt = 512;4 _7 C3 a, c( j7 L2 Z: R( x4 p* x
- static int bcnt = 8;3 M1 M% V6 v" D2 b; }
- static int ccnt = 8;& w# m1 J, f) d8 @$ a+ ?
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- module_param(acnt, int, S_IRUGO);8 `5 t0 Q) ^+ s
- module_param(bcnt, int, S_IRUGO);
8 n+ Y- U* ^ ^6 C( J3 m - module_param(ccnt, int, S_IRUGO);
复制代码 4 e+ q! Y8 Z# r
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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% x% k/ P! O6 z5 v# w2 jarm-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。
3 ~' C1 l6 x4 D, r* @3 a9 H+ u. [ 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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