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本帖最后由 yyj 于 2018-1-30 11:01 编辑 ) j- S' \1 O. {- a$ t
- [code]EDMA sample test application
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4 O) ]) ?7 n/ s - * edma_test.c+ s! S) ?" f" k8 r- @% A. I5 p% ^3 ~
- *
, w& M& y$ \4 O5 K - * brief EDMA3 Test Application, |7 k6 `* @1 q7 t# u' C
- *
1 O6 Z7 V) w- j - * This file contains EDMA3 Test code.! J: L: M- }" E4 f5 k: e) b e
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
' t2 u% X2 x5 Y2 q2 m5 E - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT9 r: |* y* i4 c8 z. n+ Z! d
- * TO CHANGE., x3 s' S: ^6 z* I9 o4 D1 c
- *- X. e; h3 {; _- z
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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# u3 k' A+ w! N' x# B - * This program is free software; you can redistribute it and/or5 x7 ^# \/ N8 G; P' E& p
- * modify it under the terms of the GNU General Public License as6 Z/ b" `# L3 ]; b5 [+ E! _; r0 M
- * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
, y7 ^ c! F; k$ b5 J& d J1 M - * kind, whether express or implied; without even the implied warranty
7 M( X/ g& U a! z$ i8 V - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the7 H. |1 u7 i+ Z$ s% j
- * GNU General Public License for more details.
# [7 L7 B" j/ P1 \" o2 I - */
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5 M! _9 p. c1 J- l4 {$ M" P9 Q- #include <linux/module.h>: U- j) s6 k0 v8 I" v# D
- #include <linux/init.h>
# |) Q# z. B9 T2 q+ b, ^" R$ n/ H3 Z - #include <linux/errno.h>; B2 R, _, T; E7 D1 ~
- #include <linux/types.h>& l) l/ p& t8 D5 C. Z
- #include <linux/interrupt.h>
/ c+ @1 _3 u5 ^5 P4 {- X - #include <asm/io.h>
$ D' I. g; V: l% ? - #include <linux/moduleparam.h>
- C5 D5 J% I9 I+ q1 ` - #include <linux/sysctl.h>" q& l; {. W+ z' D. {9 i
- #include <linux/mm.h>
1 l. D2 X" s: G; o4 P" S - #include <linux/dma-mapping.h>3 c% y2 R5 Y0 }: |
$ c. y6 Q/ e" q6 L3 M* |- #include <mach/memory.h>' `7 m1 Q+ s; I! O" m
- #include <mach/hardware.h>
3 q5 m' G* {9 _' ?7 k% s0 B - #include <mach/irqs.h>5 x- Z+ [6 |: E
- #include <asm/hardware/edma.h>" F0 c- P4 F T$ O* `
- * f( m2 B, M _$ `/ S
- #undef EDMA3_DEBUG0 p1 k9 P2 ~6 J
- /*#define EDMA3_DEBUG*/! [5 n# i# B. ^ h
- ( d' y* f% j3 N: S: a1 w4 [) q
- #ifdef EDMA3_DEBUG6 Z3 g: @+ t: h( f- r+ n
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
1 i w5 Z( D4 r7 ?* z! q* r - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)! k3 d# k0 Z* P+ Q' E* R9 \' s
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
^+ s1 {& `, r6 v9 |/ o, Q - #else$ G5 b/ @' F8 I: i
- #define DMA_PRINTK( x... )
5 h4 Z6 }7 d' }! Q) H2 W/ H - #define DMA_FN_IN
7 W; s4 v- }0 \3 k5 R, j - #define DMA_FN_OUT
9 i5 @0 y2 W2 u2 \* ^- m - #endif
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' t1 x' B; W% x2 x# L) J- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
9 w. Z% n. y% F - #define STATIC_SHIFT 3; c$ e: N7 m, l8 S# d
- #define TCINTEN_SHIFT 20( M- y* M7 R* u- k/ K
- #define ITCINTEN_SHIFT 21! k/ o7 d2 z2 D; Y
- #define TCCHEN_SHIFT 22
* Q- ^; r" {- S& `2 O2 p i - #define ITCCHEN_SHIFT 23+ v3 L: C. q2 X Z( V% X
- ! p# s) I$ C: v: _. g! t
- static volatile int irqraised1 = 0;
6 i5 G* q# ?% L/ J, X - static volatile int irqraised2 = 0;- D' W" t2 z) @9 o& F3 J1 [" ]) P
6 O5 G7 k4 `7 U8 x- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
. E7 Q! C/ o X - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); W5 T+ z' I1 r
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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* X" \; Z6 H9 Y9 m. u- dma_addr_t dmaphyssrc1 = 0;: e' f1 I+ `# V2 E4 Y+ K' z
- dma_addr_t dmaphyssrc2 = 0;) y0 Y5 Q/ V" k4 R/ l% [
- dma_addr_t dmaphysdest1 = 0;
9 `& O9 |% A4 y0 t8 y2 n5 n3 n - dma_addr_t dmaphysdest2 = 0;( W" ~5 t1 t& F4 g; ^1 P
- 0 w+ p3 [# z0 g* y% a' N
- char *dmabufsrc1 = NULL;& A# C+ S. Z0 y0 R9 s( D7 \$ v
- char *dmabufsrc2 = NULL;
, u# N5 @8 Q+ G8 `" e4 W$ ]' r - char *dmabufdest1 = NULL;
) ?+ r# b, Z' G7 k6 ~; r7 x, [% _ - char *dmabufdest2 = NULL;; B8 ~: v/ t+ _8 x% C1 ?* R
% a( X& F# j; l. e6 x: t4 q! G- T' R- static int acnt = 512;
G6 {7 R* h3 k - static int bcnt = 8;/ b0 T- ]' a. A& u2 N' S6 \! ~
- static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);; z! W$ z; p' x3 U6 e5 `
- module_param(bcnt, int, S_IRUGO);
! l9 |( y9 ]5 v K+ V% C* F - module_param(ccnt, int, S_IRUGO);
复制代码 ) D4 z6 z5 R' c2 G; L% r8 P
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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8 p# X1 z3 ~; X: j9 O4 L! T
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。
' ^9 P" l2 @/ W4 c2 s9 m- 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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