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
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/*
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* edma_test.c0 {% `: D! U4 e1 f4 `( \% ^6 ^
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* brief EDMA3 Test Application9 h3 W/ Y" \" v1 Q
*
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* This file contains EDMA3 Test code.. h' B$ [' t$ t% L
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& i! Q8 V9 {6 T! S& T
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT* P1 `8 g+ f: y( `6 d9 _9 a
* TO CHANGE.8 h' I3 Z4 C6 y! ^& F E9 P; }9 T4 d
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/: Z& ]9 y6 n' L1 o# ~
*
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* This program is free software; you can redistribute it and/or) }# [) o2 m9 T: b2 F% y* X( H
* modify it under the terms of the GNU General Public License as7 l3 [+ k0 X+ h- g6 f% |- M4 I, n2 [
* published by the Free Software Foundation version 2.
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*
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* 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: c- u( A" F4 }
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.6 w/ Y r) ^6 ~# t* T4 g
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#include <linux/module.h>( Q7 i! h& P; [0 i9 s) I1 y
#include <linux/init.h>/ K: S9 p& P" _" u& \8 ^
#include <linux/errno.h># s5 Z" t7 d% H$ P1 D4 W
#include <linux/types.h>: [, u; q" i$ o, H8 ]
#include <linux/interrupt.h>% P4 o# X0 U* h; H4 ]
#include <asm/io.h>' w4 [0 {6 ]0 P
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>; I7 Q- ?$ n0 R# X' s* N, F2 b
#include <linux/mm.h>+ d9 W% X& w8 z; B% ~
#include <linux/dma-mapping.h>& J6 W, ]- L8 `; s- [
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h># r( _' {' `+ Z' q5 n7 b8 r
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG5 r4 C, Q- G6 `
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS); {2 _, S, o3 G# u# {$ D$ f
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)7 b/ m2 {0 C6 H b
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)$ X7 l; G; o; `1 I3 t( k) x+ h z
#else6 A) p+ |4 X0 b- J n, U. x) J0 o
#define DMA_PRINTK( x... )0 R" ]6 ~0 L0 P, B% m2 }
#define DMA_FN_IN$ M3 ]5 E8 O5 Q9 l" C' ^
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3 }' Z( U$ f, H) }! m; \5 k
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 226 s/ X% i4 Z5 E7 s3 l! M
#define ITCCHEN_SHIFT 230 p- L! [& s! b$ V i
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static volatile int irqraised1 = 0;4 h: E5 ^% M0 w! n G
static volatile int irqraised2 = 0;7 v/ i5 U. T9 _3 l
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% K! x, R+ u. _3 B' Q% r
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- B, f$ V+ }& q# m# q( i9 _ x3 _3 e! g
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;9 B1 {- L* @/ @" b$ U/ w% E7 h
dma_addr_t dmaphyssrc2 = 0;8 |" B* ?% G' N2 h
dma_addr_t dmaphysdest1 = 0;. {, a& y$ j L9 l
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;6 s W" Y. ?3 }4 c( s; n
static int bcnt = 8;* r. R4 ^0 w. u- L4 B+ O' ~6 i
static int ccnt = 8; ?- Z0 Q" Q8 N0 F. `5 k, T
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module_param(acnt, int, S_IRUGO);0 w/ n& `, L9 R, A4 g& I8 t1 J
module_param(bcnt, int, S_IRUGO);! R/ y: m" T" b
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