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本帖最后由 yyj 于 2018-1-30 11:01 编辑
, W: f$ M* S3 w+ _- [code]EDMA sample test application
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- * edma_test.c
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- * brief EDMA3 Test Application; r; m1 h- |0 w7 d7 [4 f4 c
- *
( m. P# W3 ]9 \1 v3 E) G/ ] - * This file contains EDMA3 Test code.+ v# Y5 @$ ]! I! K
- *, ] t! Y" O }& j8 |( V/ E
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE0 m$ z: G; `5 u4 [6 ~7 t, W) ?
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT. ~/ J8 p( f! H) S. V+ t
- * TO CHANGE.7 f. A& Y2 A% m# Y$ O/ n2 `4 ?
- *& W9 b3 Z' F' @( b; L
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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- * This program is free software; you can redistribute it and/or) ^/ z: ]- S. S# }+ b9 _
- * modify it under the terms of the GNU General Public License as3 c% P! a: a- D+ a2 y3 u
- * published by the Free Software Foundation version 2.
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1 p& N1 R% r" ~0 ^ - * This program is distributed "as is" WITHOUT ANY WARRANTY of any& h8 H! n- i# Q4 X8 V7 l- E5 V
- * kind, whether express or implied; without even the implied warranty' R0 C8 A6 m+ ?
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 V( m2 u( U: L3 q" A$ \ - * GNU General Public License for more details.
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- #include <linux/module.h> U- {% F, @* Q. X7 k
- #include <linux/init.h>5 U8 T$ z$ d8 Z( ?+ e" z( W! t
- #include <linux/errno.h>+ V5 b3 o, W% X) m8 O" q
- #include <linux/types.h>' q; [- L1 r" w: S% ]
- #include <linux/interrupt.h> l V" C4 d T' I
- #include <asm/io.h>$ P' B6 Y9 w% X4 G
- #include <linux/moduleparam.h>: h# E3 K* t) m" \9 C9 k3 Y
- #include <linux/sysctl.h>6 _9 \# k8 V! g% u
- #include <linux/mm.h>
7 N: Y* |. K" Q' W/ e - #include <linux/dma-mapping.h>; X/ @$ |. s/ p; i7 j
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- #include <mach/memory.h>
/ c1 q4 ]' r$ a6 N) ]4 p+ P - #include <mach/hardware.h>
5 `. \; Z9 Z$ B) F) Z2 U - #include <mach/irqs.h>
1 u8 r) Q7 O* H - #include <asm/hardware/edma.h>' c5 ~3 j, x- `5 |+ }
. d; D0 |9 T m! O( D. q4 {% ^* {- #undef EDMA3_DEBUG
/ i( U3 j! E5 ^0 Y6 ]. ~" r7 x - /*#define EDMA3_DEBUG*/. d0 S0 c( W P' X# u, E9 I2 d
7 W+ n+ a1 N% Z$ [- #ifdef EDMA3_DEBUG$ E* L% A' \2 [
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS) E5 E! ]- ^1 \+ p- O/ |1 V- W6 K4 t
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)& l- v0 i9 Q+ n
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)0 V1 a6 t. D) N# I6 ^
- #else
# G2 [) p& U1 {5 Y& j - #define DMA_PRINTK( x... )( |( U T6 g/ Z+ _
- #define DMA_FN_IN
* Q4 K* v/ U1 x - #define DMA_FN_OUT
; P- u6 }& v/ m! T# j# T - #endif3 L( X3 u+ i5 i K- {, e
- 2 M! J& P$ \* M8 E8 w
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
2 w4 W# u6 l; ~/ A* w, K* h( j - #define STATIC_SHIFT 3, {. H9 A+ o8 f2 e" a0 Q0 t4 M( I
- #define TCINTEN_SHIFT 20
) u+ G, Z/ H r3 m" l5 C; S. j - #define ITCINTEN_SHIFT 21% {, Z8 J, `, i
- #define TCCHEN_SHIFT 22) E+ j$ v, q5 P2 X
- #define ITCCHEN_SHIFT 23
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( l2 ]2 F- S: t- static volatile int irqraised1 = 0;2 J! M3 ~8 K9 j2 G
- static volatile int irqraised2 = 0;
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3 A6 h+ T y. k$ v2 g2 ?/ W- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* P/ g" s: z( [
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
- [0 v8 ~ J" X& i - 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;
, ^! I4 ~8 t7 Q O7 e - dma_addr_t dmaphyssrc2 = 0;: f- e" x& N* q! s
- dma_addr_t dmaphysdest1 = 0;
$ y& o1 l2 l+ y. W- d8 Y# Q - dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;8 d- D# T7 V1 j. o9 W \7 ]1 n6 T% Q
- char *dmabufsrc2 = NULL;) D7 U- F: q. `" A$ w
- char *dmabufdest1 = NULL;
7 A+ s9 a, C) n) [8 s - char *dmabufdest2 = NULL;
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. ^" c% Z* w4 @3 e/ ^: }- static int acnt = 512;6 F; C; O7 t9 |+ F6 n J5 z- @
- static int bcnt = 8;6 e) c- Y7 g, I T6 u. A* N' f' A
- static int ccnt = 8;& R/ m+ Y8 X, x! M: n8 `) q
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- module_param(acnt, int, S_IRUGO);
0 v* A, T% n; l Q9 ] - module_param(bcnt, int, S_IRUGO);7 d& k3 `5 x2 v7 t
- module_param(ccnt, int, S_IRUGO);
复制代码 ( e/ L. Y" Z0 ?% t+ v) }, [
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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
% E# N) w& v) n# 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。
9 y! h' ]# D. Z 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。' C4 g4 b. y. D- w3 j
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