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本帖最后由 yyj 于 2018-1-30 11:01 编辑 5 c [$ N' B2 p# |! F; D- D ~
- [code]EDMA sample test application6 y9 ]3 ?8 ^2 b
- /*& h9 @# \' ^8 a1 z6 Q' E% Z
- * edma_test.c
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- * brief EDMA3 Test Application2 k% D7 w: h! W& x2 o
- *3 t. n1 }5 S% j
- * This file contains EDMA3 Test code.
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8 `0 g5 G6 g3 \2 n" @9 c' z - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
- }- t9 k t) U, g - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; w- q( R; G% ]; c1 d
- * TO CHANGE.1 q. @$ I) F) Z' r' [" Z, m
- *
, ^3 E4 B- M5 d4 [3 h! h( q% Z* [ - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com// A2 ]2 d. S3 ~0 w
- *
& k; p$ y; Q* K+ R( ~ - * This program is free software; you can redistribute it and/or" `, G% k( N! m
- * modify it under the terms of the GNU General Public License as
* @" v* ^ H1 a - * published by the Free Software Foundation version 2.; G# i+ U( U) f
- *
6 N; {3 j" s: q- y1 i7 U - * This program is distributed "as is" WITHOUT ANY WARRANTY of any o5 i6 n, n+ e# r
- * kind, whether express or implied; without even the implied warranty a! ], C6 R: ~/ a+ g1 l: d
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the6 J+ m q+ |' U2 U) _- @
- * GNU General Public License for more details.
$ v) v% _& u l0 p$ f - */
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& A8 q# l+ ^' A" `. L; u- #include <linux/module.h>/ D& d+ ~5 f$ S
- #include <linux/init.h>0 j, i+ M6 v B+ R9 G* _
- #include <linux/errno.h>% J; E% T H1 k1 B# x
- #include <linux/types.h>
2 X# Y) X) n0 ], H% \. _1 e - #include <linux/interrupt.h>9 E$ m# [& w3 o* W
- #include <asm/io.h>" L$ w9 h; T; c# I K- y, R2 M
- #include <linux/moduleparam.h>
! Y; E3 T |; _1 F$ X& x+ U - #include <linux/sysctl.h>
% ]( Z- K0 d9 R0 x9 [ X - #include <linux/mm.h>
& D( a; ~) q% ^% t# X - #include <linux/dma-mapping.h>
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; B K" f- C8 t- p \. O- G$ ^, C- #include <mach/memory.h>
4 c' n( S$ A( K+ O3 Y2 K+ D& x* X - #include <mach/hardware.h>* d9 L9 v% m0 r& n
- #include <mach/irqs.h>5 u& C5 e5 h% I5 V) @0 [
- #include <asm/hardware/edma.h>
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1 \! h$ F5 h. N- D& |- #undef EDMA3_DEBUG8 \% S3 @4 t% T
- /*#define EDMA3_DEBUG*/
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# `- e e/ i5 y' Q* }' V8 j- #ifdef EDMA3_DEBUG
( V8 L6 X2 V2 V; x. S: H H$ A - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
8 Z, h$ X; N9 Y. W8 a; f - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
& \- ]1 r# p& D! Z - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)# E( h' A. Z' _( m j
- #else
1 j! |$ S1 I% l' Z- y7 E H - #define DMA_PRINTK( x... )
7 e+ g6 m2 X' d J! d$ J - #define DMA_FN_IN- x3 x5 u6 Q4 |3 a
- #define DMA_FN_OUT9 t+ `( ?( A; ~* }5 b; m5 k0 U
- #endif1 o" g; z/ L7 V- _& S+ \* V
, _0 {3 n: z' D$ e5 l+ |- `# m- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
) \! t$ l* B& n$ d$ x( h y& W8 E - #define STATIC_SHIFT 3
2 A: r% N6 b) M! P! b - #define TCINTEN_SHIFT 20
2 a7 p3 h; n+ I, z - #define ITCINTEN_SHIFT 21
+ J! G4 P3 x( ^" ?% X - #define TCCHEN_SHIFT 225 a0 k; C' t0 b0 c0 F+ Q% V
- #define ITCCHEN_SHIFT 23 T# \9 K; y6 V O. t' I9 [# c o
* j3 b: R$ ^# T8 F: U- ?/ o% Q* ^0 r- static volatile int irqraised1 = 0;
; i7 d, Y. r8 i, }7 c+ F - static volatile int irqraised2 = 0;
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' K8 k1 r0 Y3 ?# A* o1 E [- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
! @" n2 W N7 b9 t) x - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); F3 Z4 [/ h X& p3 h3 ^
- 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 z' w1 p! j& @+ H9 v: P - dma_addr_t dmaphyssrc2 = 0;
3 K9 L7 A6 s- m/ K+ q' V' l - dma_addr_t dmaphysdest1 = 0;
. p! q1 c6 Y% P1 R( g - dma_addr_t dmaphysdest2 = 0;4 I& g) ^: O+ j& a3 ^+ \
. S* D5 @3 z& z8 b- I6 E7 r4 F# n- char *dmabufsrc1 = NULL;
& G$ V7 Z, d# r0 y t( e' Y - char *dmabufsrc2 = NULL;
7 i5 x+ F# A8 v; Z - char *dmabufdest1 = NULL;) X6 q3 ^4 J Q# W
- char *dmabufdest2 = NULL;
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: d' `" Y8 m1 \' K" r# v h- static int acnt = 512;
( Q/ } T9 r8 i& _! i - static int bcnt = 8;
: p# ^2 y: b V% L* ]) Z! B! x - static int ccnt = 8;
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* z2 U2 {& G' e' @- module_param(acnt, int, S_IRUGO);
! a! I0 N0 C3 d' Q3 Z) k - module_param(bcnt, int, S_IRUGO);6 \- c) {! v W7 j% f
- 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2 }8 \) @0 @, a. L
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。+ ~: Q$ U- H; d
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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