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 application6 m5 m% e( `* F3 o- L( _7 d% [" o- C
/*
: m- @: j; z5 u2 h* [) c
* edma_test.c
1 N$ R) j4 _+ }
*) l- |* }! V! O$ G, ^
* brief EDMA3 Test Application
M1 ~! E7 \; P9 ^1 a
*. k. E" v$ l' Q! w# j4 c
* This file contains EDMA3 Test code.
, n0 g X( v2 r! U! @8 ^
*
0 V" F% ^& Q1 q; Q2 ?2 ^/ K/ m$ l- W
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
3 a7 Y- \: z; g& X8 P+ j; ]4 [+ p
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
) [9 y4 b0 {" _4 u- Y+ p
* TO CHANGE.
% }) S' T* N* U2 n W1 m, h3 |! ~
*
7 w& S; ]; t# U* J$ S
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/! y6 a$ ~ C1 s2 F
*, L; d- H! K. y6 F6 O
* This program is free software; you can redistribute it and/or: }6 ^# g) x0 V4 S* A
* modify it under the terms of the GNU General Public License as; h9 E3 v t9 c3 J2 @
* published by the Free Software Foundation version 2.
9 U2 G0 R7 @2 H J- {
*/ k! e! D/ V6 _1 e, _3 \7 c1 { E
* This program is distributed "as is" WITHOUT ANY WARRANTY of any6 E( @2 G, v) m. j
* kind, whether express or implied; without even the implied warranty2 r/ K2 @: p3 Z/ C
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 {2 L, G3 q7 m! O
* GNU General Public License for more details.2 k/ g K9 E+ \! M
*/. d: j4 |1 O- r' ^
$ M0 [! p6 g( [8 Y9 [; [
#include <linux/module.h>
, p* d6 d+ Z' p0 y! k
#include <linux/init.h>* C% l3 _+ @' M; y# G3 R& Z1 R
#include <linux/errno.h>
( l% _3 W5 q& R8 L, U3 x1 {
#include <linux/types.h>5 [; J) x* C& X O2 \' y- c
#include <linux/interrupt.h> }" B9 R# y$ I' u7 y& u
#include <asm/io.h>2 _! m* e4 K: |1 b9 H. c
#include <linux/moduleparam.h>) j. c& ^# ?9 s/ P8 q
#include <linux/sysctl.h>
W% x! N% Q. K3 e; u# N
#include <linux/mm.h>
5 a. ]2 X) H2 {( C/ P) e8 q
#include <linux/dma-mapping.h>
$ ` L y. V+ H+ Z9 z
. }! C2 ^( m; A9 h+ w
#include <mach/memory.h>
# k$ Z5 R- e y) V; {- q6 ^
#include <mach/hardware.h>, ~* L# \4 I9 c2 u$ b" h* z
#include <mach/irqs.h>. @) E! y/ t( S n+ s( d3 R+ I
#include <asm/hardware/edma.h>& T- c( x& g: h6 i
+ p4 z5 Z% O! H: r) m( d
#undef EDMA3_DEBUG
$ A5 U9 S- ~5 _! h& g; U( V
/*#define EDMA3_DEBUG*/3 [- U2 V2 k8 S; K
) \+ \8 f, f! g2 p- z% i% n
#ifdef EDMA3_DEBUG2 x* L" s d: u5 j; y0 m8 E3 M
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
; w" G2 }( p' J: g
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)& U6 z4 x L# O9 u6 E
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
; y( I/ E: E- @1 w
#else) i3 c3 M, W2 F0 X" }0 P
#define DMA_PRINTK( x... )6 b! R4 J$ u+ j8 b; X9 H6 C6 t9 c
#define DMA_FN_IN. c9 O) }) i1 X, H) }
#define DMA_FN_OUT
+ `$ d5 t3 g; I) e
#endif/ q* t6 i( P$ `# V
. A4 q1 r3 c: l2 K- H
#define MAX_DMA_TRANSFER_IN_BYTES (32768)
" b( W: p% P3 g/ @) _
#define STATIC_SHIFT 3' e# ]: R* K3 ^" ]% v4 @- f
#define TCINTEN_SHIFT 20) Q( l) s0 s! B! Z" Q. U: k
#define ITCINTEN_SHIFT 21
# _( p O! j+ r0 Z
#define TCCHEN_SHIFT 22$ _/ M5 F! b7 h& I- L: L' [
#define ITCCHEN_SHIFT 23
& I( r7 j( F7 }+ S% I
5 t8 W& |% T3 b4 A G/ ?
static volatile int irqraised1 = 0;
# g# _; y* R% N+ L3 E
static volatile int irqraised2 = 0;0 R/ U) \6 [* A
; h) `7 H8 |$ z" `0 {; n5 Y
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 [6 n8 G1 N1 u
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: Z' a9 p/ s( M8 r- c4 X
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( y, {- L' ^7 `! O; u) L/ e+ g
7 C2 G8 w X. }) K
dma_addr_t dmaphyssrc1 = 0;
4 `$ n3 L* g- K: p' J3 j+ k
dma_addr_t dmaphyssrc2 = 0;& o7 m' C1 J- S" n1 h
dma_addr_t dmaphysdest1 = 0;4 S. J- B% e$ E
dma_addr_t dmaphysdest2 = 0;9 W2 c2 T* ]8 b. {5 X
" g; h: V0 G R% Z2 `! [- ^" J
char *dmabufsrc1 = NULL;4 O* f: m( u; o
char *dmabufsrc2 = NULL;
0 g3 x1 H: t( j# \2 a, o+ H
char *dmabufdest1 = NULL;
; W5 m, q5 m. Z
char *dmabufdest2 = NULL;; C s8 N: |/ C" C- h$ L
# T8 {/ G+ V5 ]% `* V9 p
static int acnt = 512;. |% z* ?. T8 v+ p5 N( [
static int bcnt = 8;
0 G: S; I2 Y5 T( [
static int ccnt = 8;2 m8 Y* n$ B6 m1 S
% P/ s, T6 R4 _ _1 n; m
module_param(acnt, int, S_IRUGO);& W. _0 I- k8 F' c
module_param(bcnt, int, S_IRUGO);( ~7 r. Q' l. Y) z, V
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