OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
* |/ L3 d& \( q" v9 Q8 G% C
/*
8 M! E/ X! C s3 g& M4 J
* edma_test.c$ N1 T" W& n2 A! P
*
, w& H3 z2 _) ]. A7 t# D. \4 G1 V7 M
* brief EDMA3 Test Application4 } ^6 r7 x0 A
*3 J. y) {* _# r% @! K* H: G2 P4 y' `
* This file contains EDMA3 Test code.
! O% A* t, O4 G1 k5 Q& b6 y& r
*1 y$ }0 Q1 I" W% N7 H
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE6 b3 C7 r5 \ |$ O, w+ P/ T4 C" a# Y
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
( S) t* ?# B2 i, h4 Z, @' Z
* TO CHANGE.+ o4 y. h K* K! e9 B
*4 P, v+ D4 Z& a& o) B/ t$ A
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
5 l2 w0 @ \8 Z3 Q
*
3 a& v6 R9 X5 y6 R, h& T! ]
* This program is free software; you can redistribute it and/or
$ t2 c6 f9 q0 ?4 j: c0 p1 \) t. }
* modify it under the terms of the GNU General Public License as
' w7 E9 E7 `" k& e
* published by the Free Software Foundation version 2.
% n- k4 B! m4 z( t
*; z, _# J7 b) X
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
3 V0 p' w x$ N
* kind, whether express or implied; without even the implied warranty9 ~. A' }2 y& N( P& S- b+ s" L
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
8 C2 q: K) g3 _# ~
* GNU General Public License for more details.. M8 l( m1 m: x) c
*/
) l% j3 ^' T+ u* ^$ }+ S' `
- P- S b9 j, `0 p) `
#include <linux/module.h>
( A* Y9 Y0 n: g& T
#include <linux/init.h>
4 K& z/ c; V8 z6 I/ R, i
#include <linux/errno.h>
! e7 w3 ^( W N: W2 ?
#include <linux/types.h>
* v) [7 ^9 J5 ]/ t
#include <linux/interrupt.h>2 G/ ~. Q7 e" Y- Z
#include <asm/io.h>
0 [: w& F s3 z5 ^" }6 i
#include <linux/moduleparam.h>
! B' j$ A% v8 l# W& J. q. e# j
#include <linux/sysctl.h>( w, v. n& W" I3 I; U' u' m) ?! I3 u
#include <linux/mm.h>$ e( G9 v, v" L$ G! r7 J* f9 H
#include <linux/dma-mapping.h>
: ?: l: J" j; A" E: l- L
1 y0 {+ T! V; v* S$ ^
#include <mach/memory.h>
$ g3 o0 R, s2 S) i# c- v
#include <mach/hardware.h>
% B# z0 X& s; y
#include <mach/irqs.h>
4 X) q$ c& {5 I$ z9 ]- M" j' f
#include <asm/hardware/edma.h>
) v* N) X3 W0 k: @4 U/ p
* O! W1 E2 h6 n& G# g( F b' _
#undef EDMA3_DEBUG
6 N# B8 Q* h+ h+ N) f2 O
/*#define EDMA3_DEBUG*/7 w) `3 _ B0 Z( l u" c( T. a; ?
1 j N6 D9 U+ f# s b Q
#ifdef EDMA3_DEBUG6 L7 m7 t8 L; m& j% F
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)! S9 U( w/ w- P/ z
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
4 u) ]& e: d. I
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)0 u% L8 G6 ^' {' ~& h" r* [
#else$ \6 j& R6 W0 X( V0 o+ [5 t2 D6 r
#define DMA_PRINTK( x... )3 z" d! x+ L L$ S! Z* C
#define DMA_FN_IN6 G2 N) Y. R# r" D
#define DMA_FN_OUT
$ J$ k0 m4 _# n/ _/ O" D
#endif
- [- z3 m/ l+ l. m, q
5 B! J, {. M' h: ~
#define MAX_DMA_TRANSFER_IN_BYTES (32768)
2 k( u1 \" T: {( c+ E* _8 p
#define STATIC_SHIFT 3
7 O1 l! j/ M& t' b7 g3 {5 W' `4 x
#define TCINTEN_SHIFT 20
0 y! J& e- q G. `
#define ITCINTEN_SHIFT 21
+ M- G( Q5 H6 r' v3 X% T
#define TCCHEN_SHIFT 22
6 |: N9 H6 w+ D1 @& |
#define ITCCHEN_SHIFT 23
0 w' E& K) G' f
: R: _% i9 _7 _2 y* F+ n6 g$ s: }2 J
static volatile int irqraised1 = 0;
4 H6 A/ L' @- \( I$ r* C
static volatile int irqraised2 = 0;+ v0 R) H0 b6 v' i5 A! p6 n
2 {! M8 `: |* o$ F; h
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
2 E2 `9 D! R( ?* X- O" r' Y( W
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( Y$ @+ a$ \$ d1 `
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- ^( p) f+ R) ]9 u& y \8 X! H. D% j
5 ^* W9 s6 ]8 e7 p! L! [5 J. p
dma_addr_t dmaphyssrc1 = 0;2 s* D9 @' h& a( C1 h
dma_addr_t dmaphyssrc2 = 0;9 n, f% }1 c1 P6 |" Y8 x
dma_addr_t dmaphysdest1 = 0;7 ?4 z2 s3 f E' K, Y! L4 @
dma_addr_t dmaphysdest2 = 0;$ _0 o- j# N5 ?. D# W
4 x0 ?7 u$ Q$ N1 e* S2 n0 z4 R
char *dmabufsrc1 = NULL;8 O7 v; B- b; s5 d
char *dmabufsrc2 = NULL;
1 L3 t" ^6 f/ p4 [3 W
char *dmabufdest1 = NULL;
$ x. |0 A# ~7 a7 U' Y( W
char *dmabufdest2 = NULL;
& X6 q8 `6 |% D& V+ d% X; `9 ?
$ E4 Z; R) _9 h( B1 Z9 X
static int acnt = 512;! o! h- c: G% e" i
static int bcnt = 8;! M& Z( p- o. Z3 _) \# K$ b
static int ccnt = 8;* m. `- h6 r+ C" |! }, I! _# N
! Q& T J/ g0 ~' b
module_param(acnt, int, S_IRUGO);/ M$ T' U1 M: x J: F1 _
module_param(bcnt, int, S_IRUGO);
module_param(ccnt, int, S_IRUGO);

复制代码

   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
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。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

		自动登录	找回密码
密码			立即注册

[未解决] OMAPL138如何在Linux下使用EDMA3驱动