|
|
本帖最后由 yyj 于 2018-1-30 11:01 编辑
q: p5 N, P$ G; f4 f/ i9 }* ]- [code]EDMA sample test application
7 |$ ^2 F0 a: O7 v% z' i - /*
1 U1 z: \' ?5 w6 _ - * edma_test.c5 g4 D6 h# I% L% u, \8 d. I* v
- *( S3 s* I+ J6 f* H8 R" D0 \
- * brief EDMA3 Test Application- H; K6 L: N- q- u* n
- *2 q6 {5 c* b2 ]& _9 Y
- * This file contains EDMA3 Test code.5 ^/ ^: c7 R! y, k" |) ^
- *( e: Q6 G5 i. j
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
9 i m5 k9 F E) [, c3 [ - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
0 L+ B: R! x6 v1 L$ x0 W - * TO CHANGE.
% e' r6 W6 r& b5 w - *
* q5 r) z" L) A/ E, q4 G! o - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/) p- H" t& o h, N
- *
( L% [6 y3 l! J) d6 [4 F* D - * This program is free software; you can redistribute it and/or
2 @; _" h+ X8 @) Q" E - * modify it under the terms of the GNU General Public License as3 u' ^! _4 ?3 j O+ t6 o# ]
- * published by the Free Software Foundation version 2.
9 i( v3 P( Q6 e - *
9 S! {/ L: ~" ~, ? - * This program is distributed "as is" WITHOUT ANY WARRANTY of any' H4 f% C8 _ J) r6 \" s9 E
- * kind, whether express or implied; without even the implied warranty& o! L6 G* R; Q; V" X8 e ?8 G
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- y+ }( f& X& B* |" o/ b4 z( N" e; Q+ D - * GNU General Public License for more details.
7 r" p6 m6 ]: Y( Z. ^ - */# ], p7 x/ s" s; n4 E n |- q
- - S$ C: }2 d' s; L
- #include <linux/module.h>
! j( v0 {* ^, E" X0 ]5 q - #include <linux/init.h>
) A( X) x; Y6 Z' G! W - #include <linux/errno.h>6 L# b" }. h% L8 c/ _
- #include <linux/types.h>( b8 ] ]3 s# H# O1 {7 a, i9 s
- #include <linux/interrupt.h>
: _2 p( ~5 M+ `$ B7 S, S - #include <asm/io.h>/ d5 s- l% a9 Z) \ c9 r
- #include <linux/moduleparam.h>
8 J3 r! U& ^" T3 ] - #include <linux/sysctl.h>
: t6 ^8 M2 b$ S L$ P6 j* O9 A9 Z: U* O - #include <linux/mm.h># K4 g) f1 K) Z$ m' Y$ q
- #include <linux/dma-mapping.h>9 N m# u% r1 i
- 0 p2 w$ c2 J' p* a
- #include <mach/memory.h>4 T( @5 f$ p! s! b$ v2 q0 y& v
- #include <mach/hardware.h>
, h7 B. K G/ u: U2 \ - #include <mach/irqs.h># q3 T6 u: _) X3 k
- #include <asm/hardware/edma.h># U6 _8 Y3 R h
+ D) Z) A, X- y/ E- #undef EDMA3_DEBUG8 o. r4 n; a# }) E7 {! J* \4 _4 n5 A. {
- /*#define EDMA3_DEBUG*/ \3 A6 I5 C- N6 \: ]: H
- E- ?- r- T' y; A5 G6 b- #ifdef EDMA3_DEBUG7 g7 ]3 ^6 D/ u: b4 K4 E, M
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
) y3 w. k; c' ]! \- r8 X7 u! T - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
2 V" C" f/ B* f; G# ~1 X - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)+ X4 L% `& Y/ C
- #else8 ]9 w( m6 |( P: d- N% }
- #define DMA_PRINTK( x... )
$ `) z9 G1 a( h1 i0 z3 G- e - #define DMA_FN_IN
; @0 m4 O/ D) x3 ~/ O! i I - #define DMA_FN_OUT% O+ `- ~- ?. v; h0 l
- #endif
5 R! ?( C9 e V4 b5 T" S
5 @8 F! k) y- g; }- #define MAX_DMA_TRANSFER_IN_BYTES (32768)& o, z3 F, w! M7 Y, m1 {
- #define STATIC_SHIFT 38 G' n; K2 k9 k8 t' j6 O
- #define TCINTEN_SHIFT 20 T" O# A5 `5 r- w) X
- #define ITCINTEN_SHIFT 21
2 m- e/ O1 G1 Y3 t0 e - #define TCCHEN_SHIFT 22
7 q1 o$ p0 Y4 a* @2 f/ [ - #define ITCCHEN_SHIFT 23% {+ W. r' I/ v* P9 p1 N+ v
- / U6 L6 K/ W$ }* D1 W
- static volatile int irqraised1 = 0;
0 `8 R- Z) W5 W3 C5 m- M3 Z - static volatile int irqraised2 = 0;# |7 a p( T- h+ c" G% M
- . X3 a c# B: l i* f: Y$ Z6 n/ _
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
( |* @# N1 ?0 D% s* _6 z - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 G4 l6 h3 R) q# P1 g/ }. |
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
4 x/ |& Y; |2 o, G5 \
9 u- I. q& `& Q: O4 \- dma_addr_t dmaphyssrc1 = 0;9 S' r1 ?, K. ^3 d: k
- dma_addr_t dmaphyssrc2 = 0;
- w" E, h3 E- ~8 Z: C - dma_addr_t dmaphysdest1 = 0;% j5 X, K' l9 I X
- dma_addr_t dmaphysdest2 = 0;. j. V. R* C' L1 h$ a( L0 E( q
- ( O% H2 N9 K+ S4 n4 _
- char *dmabufsrc1 = NULL;
1 l6 |4 z" r1 f6 M6 n - char *dmabufsrc2 = NULL;/ S2 j+ C+ N5 h* A1 j% s- G% z! h
- char *dmabufdest1 = NULL;
8 v& x7 d d& ^1 w. Y# B - char *dmabufdest2 = NULL;
* v2 g" w' V b. x" ~& { - 0 z) e0 q1 P4 i. t
- static int acnt = 512;
# N3 t- ]& ~; h) M+ T/ U$ K7 f+ L - static int bcnt = 8;
" Z) W6 y( S( w: ^ - static int ccnt = 8;6 ^0 C/ @! [6 W. r
: L1 x- \ Y0 x( r# c- module_param(acnt, int, S_IRUGO); K S J9 `+ T% f# [. ^
- module_param(bcnt, int, S_IRUGO);
9 m* j7 L0 M3 s' U j% [) a5 V - module_param(ccnt, int, S_IRUGO);
复制代码 # ?5 d! Q# M7 h j$ k
) i- q, }6 j; q* y/ ^ 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" Q- o/ E. n' |7 } A0 J) W, o
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 U$ w7 h; y E2 `6 q; 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。
2 C" T2 ?; l4 D M; w- _( o- w
) ]! h3 m1 n9 n% O: q7 t3 m& `, S% t; ^. n
|
|