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本帖最后由 yyj 于 2018-1-30 11:01 编辑
; v: \& {5 B% x3 z; _8 h- [code]EDMA sample test application1 k7 g: ]) P' [3 ~ R# f/ ]. S
- /*# _6 `* L# i' K
- * edma_test.c" ?( ] {9 h: P9 E
- *- v+ t/ b1 o( n# ?' Y3 s9 k( a, q) f
- * brief EDMA3 Test Application2 q I* f3 v: n% C1 Q
- *) P* E7 P, e+ K8 @ Y {, H
- * This file contains EDMA3 Test code.- C/ ?# g: [0 U* V7 e# S
- *
7 O7 A4 I3 v5 D9 K+ E, s - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE+ m8 q6 Y" X+ I6 U1 u) T/ |
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; E5 r5 g4 `) q' Y
- * TO CHANGE.# W: ^* Y# I( M# E
- *; j2 _8 p7 y& N3 J$ T. e+ ~4 ]
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/& C+ A: ~* t* W' `, n; h8 n
- *
+ p6 m# q2 E. v - * This program is free software; you can redistribute it and/or
$ h6 |! o& c9 i8 } - * modify it under the terms of the GNU General Public License as. \5 j: n2 C- j
- * published by the Free Software Foundation version 2. _! }- P9 J" w1 `5 Y0 ]. L- _+ R
- *! @( ^0 j+ R! D2 \
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
& M) G% W- O0 ^. i0 {$ H - * kind, whether express or implied; without even the implied warranty
8 p6 P% d# e' j9 m d W - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
4 _3 N: r2 S! U: m! p) F! p - * GNU General Public License for more details.0 [& ~" S _/ A$ V" a
- */
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- #include <linux/module.h>
: l# q' p( Z f$ C1 H$ m: |7 I - #include <linux/init.h>
5 N. M" g }6 q) o - #include <linux/errno.h>- P( X) z+ q0 J" O: X$ t7 u& Z
- #include <linux/types.h>; u' E1 V' r! s0 L) E8 l8 a! E6 v
- #include <linux/interrupt.h>4 p4 ?. z0 l! P" ~
- #include <asm/io.h>. F/ F- Z- h( H
- #include <linux/moduleparam.h># ?+ k2 ^: b8 _( Q
- #include <linux/sysctl.h>
" _. z8 m* \- e& M7 c2 C& h P0 |8 B - #include <linux/mm.h>
3 m9 ]' Q5 g3 m- f0 V( @0 N - #include <linux/dma-mapping.h>
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- #include <mach/memory.h>7 R" y t% e7 @2 {* Q2 U" E( @
- #include <mach/hardware.h>5 n3 _ e( {7 _( k2 }. y; u/ \
- #include <mach/irqs.h>
% k* O) d; S4 ~1 n& m, Z' g& Y- f& c - #include <asm/hardware/edma.h>
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( n4 _7 K& V' z' b8 U* e- l' U- #undef EDMA3_DEBUG
, `; b, L. A K. b4 \* m5 G- e4 v* A - /*#define EDMA3_DEBUG*/
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* P7 q9 R3 T0 e# _% r S7 O3 v/ D- #ifdef EDMA3_DEBUG
( V/ z, g, c. `. r. O - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)$ |' i2 s/ Q. Y1 x4 E6 T0 N
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
+ j) y0 w2 \' l/ X6 X+ O - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
9 c/ h' U! P( J - #else9 h" e, M( }' n
- #define DMA_PRINTK( x... )2 [' Q% w5 S. k" a' f0 p) j/ v+ M
- #define DMA_FN_IN
- g. q& q6 k; B - #define DMA_FN_OUT
+ X& e' l3 m% }! q4 M L - #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)( N, P. j: C: }1 y( n
- #define STATIC_SHIFT 3
8 P( O- N9 Z, _- A) } - #define TCINTEN_SHIFT 20
- \* V1 h9 q( c) I3 j) Z0 X' R8 x - #define ITCINTEN_SHIFT 21
* T; ?. j, @9 N' |7 a - #define TCCHEN_SHIFT 22
k1 q3 @4 @8 C! K- s% i5 N - #define ITCCHEN_SHIFT 23
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+ W) S5 ?+ ^/ |- static volatile int irqraised1 = 0;
& D; }& { v9 t! g4 i/ z F( B - static volatile int irqraised2 = 0;3 V2 t5 O" ]* Z6 s
% C/ g) W6 `# k6 s0 W# L- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) p; R8 j& S" b
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" W: f, X1 m3 I% b9 c* B
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 o% C- D: H: i( l
- 2 {# M, A/ A& f2 O; _* r$ Y
- dma_addr_t dmaphyssrc1 = 0;# V5 J, D7 ]! z; w
- dma_addr_t dmaphyssrc2 = 0;
- i9 J2 z+ y$ H, L0 l6 _, T# r - dma_addr_t dmaphysdest1 = 0;
8 Q$ C. w+ m5 s2 n" H( t% L7 N+ C2 V - dma_addr_t dmaphysdest2 = 0;5 }5 F k; M5 z/ \- O
- % L; ]6 x* {: e( J- Y8 L1 Q
- char *dmabufsrc1 = NULL;" l4 S% r# n" C( C% o9 v5 U5 w
- char *dmabufsrc2 = NULL;" A9 v2 v; p1 Y$ e% H5 P
- char *dmabufdest1 = NULL;
/ u; Q0 B1 i& r# E. y - char *dmabufdest2 = NULL;! C4 v" K0 E( r" L( ^1 e
- 6 O: {. A3 L, _6 f. |. ?7 C/ V
- static int acnt = 512;
$ H9 u' `# ?; d8 g9 M4 W - static int bcnt = 8;% Y# Y {6 K4 D% A
- static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);
8 p5 C; r3 D7 g1 L5 q2 T' l0 O - module_param(bcnt, int, S_IRUGO);# o7 P% E9 Y+ K# _, }! E
- module_param(ccnt, int, S_IRUGO);
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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( t/ s* T* ~7 o0 M
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。
# _( j- o, E# x; ` 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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