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本帖最后由 yyj 于 2018-1-30 11:01 编辑
: F0 P- N3 q" S& @' u+ r- [code]EDMA sample test application
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! A, Q' Z( r1 i' s9 O+ g9 k i - * edma_test.c
; E e) m) V( A( V$ {, e$ c - *
3 X$ y" \1 a! m* O/ n - * brief EDMA3 Test Application
6 V/ z& @8 J1 T& ]% ` - *
& X! g$ w, C d3 Z. z4 U9 W) O - * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
" E+ }& w; I( B% |* P4 x; x2 g { - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
6 Y3 @: x" N( G. u. J; U - * TO CHANGE.& v+ i3 b& Y4 b/ d& ~; b( m
- *: y- E" z, a% y) @/ {4 }
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
: a+ R9 n7 z& |# L% [ - *
/ y- [1 H9 }. T* h - * This program is free software; you can redistribute it and/or9 ?% x0 U# D$ Q# {9 B
- * modify it under the terms of the GNU General Public License as
/ ^3 w- K3 D0 ^5 u5 q: H - * published by the Free Software Foundation version 2.
2 x; e$ x3 N3 I$ ^7 r( }3 b, R - *4 W4 Z7 |% B. ~
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any8 D3 r& C% z( B) E' k) g" [
- * kind, whether express or implied; without even the implied warranty
/ E" q& @) h% U4 i8 B - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the; W. z7 X/ j6 F' _& i; V
- * GNU General Public License for more details.1 ^$ u" m$ L4 ^6 V' m! f4 p* r
- */
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1 E5 [0 F5 ~+ y- #include <linux/module.h>% x4 \% Z1 g0 y7 Q0 r; S
- #include <linux/init.h>
3 {% Y" ^4 W/ D: R* \ - #include <linux/errno.h>+ O4 @4 w( L% c- y9 `
- #include <linux/types.h>4 v. W1 {0 R* S1 n
- #include <linux/interrupt.h>+ k8 @, U- s! _. t M t. v" d$ p/ s# K, a
- #include <asm/io.h>
0 E1 ]: u3 I& l* g0 \& d# U - #include <linux/moduleparam.h>
# i! e- Z6 b2 U* B" y - #include <linux/sysctl.h>
0 g: S8 D& s# Q - #include <linux/mm.h> q8 X* ?& g- R, p8 l3 L
- #include <linux/dma-mapping.h>
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- #include <mach/memory.h>5 L( A8 f' a; [% I
- #include <mach/hardware.h>4 L2 b3 Y$ h; |- {6 x9 X
- #include <mach/irqs.h>
& w U" S5 m A! E1 }. P$ W8 F - #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG( k2 R) ~% {7 \5 l, Q
- /*#define EDMA3_DEBUG*/ C8 l/ b- z4 M6 H$ A
4 q. _% u- t; M& n1 n1 V8 A3 ]) i- #ifdef EDMA3_DEBUG5 f! V( N# H+ A# L" N. `# m$ N
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
7 J; O0 O& ?! K' x4 N - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
" ?5 `% b" @$ R3 ?* O - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
! T& @ i* O; c% m+ M& \ - #else/ A. v( |! P4 A/ Q+ F& ^! e8 e6 s
- #define DMA_PRINTK( x... )& I# d( c; `9 D3 D7 R* f3 e
- #define DMA_FN_IN2 t4 {6 d* j* G3 Z, ^- A: i) E9 O
- #define DMA_FN_OUT, n3 \4 V9 C# f6 a/ v
- #endif" [8 v0 G4 o" m( p6 v+ d, N5 l* X
- + a9 l1 \( O) i* A& R! L2 l
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
8 I- z5 |( T9 ?4 E4 l# t - #define STATIC_SHIFT 3
$ h# \( g, V9 z8 ? - #define TCINTEN_SHIFT 20
* u" d( j/ d f6 s - #define ITCINTEN_SHIFT 21
. H! Z+ M* `. J0 X1 d/ @ - #define TCCHEN_SHIFT 22
& @+ p9 ]: r) O+ a; E9 H5 _# M. q2 s% \ - #define ITCCHEN_SHIFT 23+ h, C& m6 X1 ^! `3 y7 m5 P
- ; x1 }2 v- e( k2 o, T- V" C
- static volatile int irqraised1 = 0;
) I5 F9 A7 l0 Z0 G3 T0 C7 M. W' c - static volatile int irqraised2 = 0;' f* X. i; F4 O9 [ B1 J
: p" u9 r9 ~1 [' R7 I& }( {) T5 B5 G- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 d+ j) Y% n- J
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
; ~$ k+ o8 @% h Z" D# t; z7 j3 a0 v - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 u+ Y' w) E* Y' F. l: v; E
! U& Y+ i& s# f: v- ^* o- dma_addr_t dmaphyssrc1 = 0;
! F( [( ^2 G7 ^( E+ Q: Y - dma_addr_t dmaphyssrc2 = 0;
# s, G: E% z A7 m% P% c - dma_addr_t dmaphysdest1 = 0;
/ R% o* S$ F0 N* D2 i - dma_addr_t dmaphysdest2 = 0;% J# O$ f7 A- ?3 L- O/ R$ P
8 c$ W0 w7 h/ k3 w9 Z- char *dmabufsrc1 = NULL;+ S, {1 p4 c( c* ~+ V
- char *dmabufsrc2 = NULL;
' N% k- N7 K! |7 t _ - char *dmabufdest1 = NULL;
9 J6 D. v+ h: S3 ^6 f6 z - char *dmabufdest2 = NULL;0 m* c: e$ Z, B. ?. }! |! E
- ) N& t P- c* D5 _4 J8 e P v
- static int acnt = 512;5 Q+ B" q# ]2 I! p7 S& D- Q
- static int bcnt = 8;
; }) r' X3 D. v- g7 Z3 q - static int ccnt = 8;
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+ \3 u' m. _9 _! y) c# S- module_param(acnt, int, S_IRUGO);- w, I" H- k7 C& ^3 v
- module_param(bcnt, int, S_IRUGO);% p* W. I' Q5 ]5 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# M/ B5 N7 i& k: ?& {8 i
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。& k$ A$ r( I& z' l! K8 V/ ^
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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