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本帖最后由 yyj 于 2018-1-30 11:01 编辑
3 j" j. w5 y3 z* A; ~. z, a- [code]EDMA sample test application
; @7 O4 c% d9 q - /*/ I" C# M: m& Q
- * edma_test.c
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5 [. R" a' O, q- y& ? - * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.& g, r* ~( s4 L
- *
" A* y$ c- T6 n. H - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
- C! V' _! y8 L s/ K$ P5 q v - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
0 ~$ W8 B/ [5 W5 b" \ - * TO CHANGE.9 j9 X8 k3 G7 r; r3 a j5 G
- * ?* V7 y- k8 v1 [, _
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/1 y0 {0 N+ `9 w* A w- n: N
- *
& w- S, n0 Z0 U" x - * This program is free software; you can redistribute it and/or- I- n1 N- d/ x; w/ Q& `% u
- * modify it under the terms of the GNU General Public License as
1 c- o" r- W6 d - * published by the Free Software Foundation version 2.
8 D9 r1 s% N2 S - *
4 f M' R" O6 }6 M e - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
& F ~) |/ f6 C, Z - * kind, whether express or implied; without even the implied warranty
2 V& p" |7 w4 O- C$ ^6 ? l - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 ?0 s- Q4 }6 k; w3 L+ V - * GNU General Public License for more details.
. p: X) g8 u; ~! o- I$ T. f2 H - */
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- #include <linux/module.h>) Y+ V/ |. s0 h" S5 e+ s/ A
- #include <linux/init.h>- ~- ^9 q3 K. h1 a x1 ]
- #include <linux/errno.h>7 F5 {( M3 e% c4 F$ E
- #include <linux/types.h>( I/ O3 _6 o, u: ?
- #include <linux/interrupt.h>: l, h+ a3 Y1 O- K: h! V$ ]& N
- #include <asm/io.h>
1 F; ]' j+ X2 Q7 B - #include <linux/moduleparam.h>5 U: V' p( w: w( G% r- {: f
- #include <linux/sysctl.h>
2 c% z) h$ k. c( C8 _+ ?- _. g! p, z - #include <linux/mm.h>; g+ M6 G; O; w1 V2 _
- #include <linux/dma-mapping.h>0 I3 J" M" Z* B
- ! ]5 I. `! q5 { F& g5 P. C9 Y& I
- #include <mach/memory.h>
, \6 f1 A$ y8 \5 E4 j - #include <mach/hardware.h>6 `) i. ~* {0 t+ _3 F! F
- #include <mach/irqs.h>* x9 Y2 {' [8 {5 N2 {* O! p# y0 W
- #include <asm/hardware/edma.h>$ F4 \2 o" M' d6 d0 l+ L: _
- 2 v% I* m/ W/ C o3 r
- #undef EDMA3_DEBUG
! |+ e3 X4 {" n- B5 r( S8 U - /*#define EDMA3_DEBUG*/8 T1 z6 F; C: K& E: L8 f
; j. I! L7 h+ A+ ?5 p! z5 W# K- #ifdef EDMA3_DEBUG" w5 Q1 N+ b9 u, j" j5 ]! O1 p
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
8 \8 Y. x7 {2 ?" }& G. } P - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)% {; Z* a3 A) K1 H/ O* \, G0 _
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)0 K. p( R1 s F
- #else( k4 _% S( T+ q7 q: c) t+ q4 b
- #define DMA_PRINTK( x... )
( }6 ]- x' [, { - #define DMA_FN_IN" K: ?/ ?# S* Q: m" l% Z; g
- #define DMA_FN_OUT
, W8 c: Y6 S3 J - #endif! E4 m5 q( H- {: U2 i$ u
- ! k& u) j: \( c& m6 C' u
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
, w2 |( M. ], q5 i: B$ [ ~ - #define STATIC_SHIFT 3
, H# u8 o8 S* A4 Y( N1 c f/ l - #define TCINTEN_SHIFT 20
y9 h1 [3 W$ T3 L - #define ITCINTEN_SHIFT 214 l1 u, T- H, p( X! U- Y4 t6 e
- #define TCCHEN_SHIFT 22
- M0 l6 c$ D" h2 Y& W - #define ITCCHEN_SHIFT 23
- Y7 m) S3 O" }3 _# O% F6 Z - 8 u1 }+ O+ l: L
- static volatile int irqraised1 = 0;
5 r, ?) H% y* l5 J - static volatile int irqraised2 = 0;
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& q3 \& M$ R0 O) i8 v$ A* b
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 J$ a* _! H% U+ P& v* h
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 e# x4 Y9 b) c0 F
- 6 b/ c: Q8 Q6 v1 T r
- dma_addr_t dmaphyssrc1 = 0;
/ C& w0 f+ z3 i1 ^. @ - dma_addr_t dmaphyssrc2 = 0;
' V* `" y4 D7 Y% Y - dma_addr_t dmaphysdest1 = 0;6 o, P# N l+ V0 t1 z( O/ z
- dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;
$ m" Z( W% i9 C# R1 M# H - char *dmabufsrc2 = NULL;7 v/ z0 e7 U# u; B/ x) G
- char *dmabufdest1 = NULL;) t3 ] S5 C& a# S: {
- char *dmabufdest2 = NULL;; W8 l' f, x6 P
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- static int acnt = 512;
7 ?9 y% U5 h: m$ N. V d# k. ?2 Z7 G - static int bcnt = 8;
1 c5 J @1 s( [" D7 ~( w - static int ccnt = 8;
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; S: Y& q; n7 W4 O" }) `* u5 ]- module_param(acnt, int, S_IRUGO);6 r) K* [, v% v3 z- ?, U/ O
- module_param(bcnt, int, S_IRUGO);! _9 g, ~3 [$ y( H% T3 L6 y J' O0 y( L
- module_param(ccnt, int, S_IRUGO);
复制代码
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6 Y/ F0 ]9 f r0 u, a2 ~& J. i 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6 E! `9 b4 [3 {
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。6 R1 `+ S3 z# V$ R& W
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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