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 }9 D ?( f4 q; j1 N
/*+ s8 n5 m$ j( p1 A2 j5 ^% l% w
* edma_test.c4 z) T6 u4 P; B3 \- k! j
*4 J& h# U% f( ^7 @
* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, b% J& b* _& T7 \
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT! @! s: ]$ V; a
* TO CHANGE.. Z4 {/ u- e% R" t2 M, w; T
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/1 g7 @ N8 y4 U/ p# v. e) \. A
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* This program is free software; you can redistribute it and/or6 j* T& O2 {4 j# k# F9 e
* modify it under the terms of the GNU General Public License as) p! S, P' O3 ~( {" J
* published by the Free Software Foundation version 2." g/ ]! @- f7 s3 t E% z& h+ {
*5 r; h7 X- B2 B. v
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty/ P5 ]/ ^! g5 ~, q* K: A n# X
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the& @7 U& Z6 i6 J, y, ^% e5 v
* GNU General Public License for more details.
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*/
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#include <linux/module.h>3 P4 O" P& J& g5 e J: t
#include <linux/init.h>9 \; y' t) I: I3 f/ Y# a* x: C+ A. y6 v
#include <linux/errno.h>
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#include <linux/types.h>: T4 b) `* A/ b" v* q
#include <linux/interrupt.h>: c1 h& \0 {6 S4 f6 {
#include <asm/io.h> O4 {/ r6 u4 E) [
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>% V: ?* x6 l( F# D( A/ X6 }- W
#include <linux/dma-mapping.h>
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#include <mach/memory.h>2 }1 T8 P* X. i) u5 u
#include <mach/hardware.h>
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#include <mach/irqs.h>! |8 K h) T, j/ a \
#include <asm/hardware/edma.h>4 y% Q2 Y1 {8 J5 u# M/ {* A
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#undef EDMA3_DEBUG3 _& |' U9 r. ?- v
/*#define EDMA3_DEBUG*/5 f( R! g# t" E6 ~
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#ifdef EDMA3_DEBUG5 q1 j' h T* [5 K/ {1 E0 W
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS). ~! t3 u- h* ]7 a
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)$ ~" G1 C, Q; H; Q/ D9 u
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN4 }$ Q& O# e Q8 j5 |! p1 T" f- U
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)1 O, G" q( O& C! P+ _$ R& M" t2 U4 d
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20. f' y: X- C" k. A, s
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22# c @0 c, Q6 f3 u/ c
#define ITCCHEN_SHIFT 23% G' s% u6 {& \8 b8 e z7 @
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static volatile int irqraised1 = 0;
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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);. O' A% A8 q7 G( @" F C
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;- Y( o" z9 k/ Q' A8 b n* Q
dma_addr_t dmaphysdest1 = 0;7 o2 X" V2 K+ U+ F; Z0 _
dma_addr_t dmaphysdest2 = 0;6 A2 K' h/ @$ j7 Y
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char *dmabufsrc1 = NULL;! c2 b. K: T4 ~+ p, \2 {0 T
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;7 v; M- v/ A( H- i: m: \0 Q
char *dmabufdest2 = NULL;
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static int acnt = 512;* x0 J: w9 B- ?8 z( q0 b/ J
static int bcnt = 8;
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static int ccnt = 8;2 Z3 |- a2 C7 P3 r2 r
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module_param(acnt, int, S_IRUGO);/ {- y! f1 t }$ C) x4 {' R2 o
module_param(bcnt, int, S_IRUGO);9 W/ i) V1 W0 `6 G 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。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动