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( K4 v1 J* D1 z
/* D! u+ B" m( M V9 O$ S
* edma_test.c
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*
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* brief EDMA3 Test Application( y5 ?7 t, h, k1 i' N& N, n
*
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* This file contains EDMA3 Test code.2 ]: H# Z: T& ], g G: a
*3 v6 P. U8 D4 c. g/ T( \
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.+ R* J3 H- j# r7 o, v+ y
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/& D1 S- G! N8 F/ C3 h+ Z) U
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.: d$ F! d9 c9 U) ^: v, B+ z
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any" k/ S. e& s; e i( D2 Z
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.4 K% h6 k: J. G
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#include <linux/module.h>& i$ H! k& d1 E. s+ _1 J- m
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>- p1 @# I& M' L! m+ A
#include <linux/interrupt.h>$ Y5 m9 y& M- x9 {, C. S: a! T
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>. x" X( o5 a( w! S
#include <linux/dma-mapping.h>5 k. ^8 C: Z/ K' Y, B
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#include <mach/memory.h>
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#include <mach/hardware.h>' X1 m5 D# q) n: I5 u0 Q7 {
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/5 E2 A! n0 ~! f% B( v, l) G, o
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#ifdef EDMA3_DEBUG. a- T& l: I& {/ z! s9 ?
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)8 M' d3 |% l6 ~( J; {# M
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)/ H; a. R, w U" Y8 c0 _1 K+ u
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )* U9 s# l6 u2 u0 X. U. M! r
#define DMA_FN_IN r1 [, i1 N+ j9 ?
#define DMA_FN_OUT
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#endif3 f& F4 a3 Q- v# M* g; q7 u
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#define MAX_DMA_TRANSFER_IN_BYTES (32768). c4 P& u h! e( Q3 M
#define STATIC_SHIFT 33 N- U7 y% h; r- U$ [0 y8 x. f
#define TCINTEN_SHIFT 200 B4 {% C( b0 z0 `
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22& T3 o8 @/ h* q7 K; j
#define ITCCHEN_SHIFT 23! x$ [) o$ B" o) S* J- G1 [- s- h
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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);) R- M6 C0 F( i3 f3 `, e
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, E$ ^ ]" |" v C
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;% C! m8 v! j+ |* @) `5 j* V
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;( m8 U; j6 u. S$ Y
char *dmabufsrc2 = NULL;. n. ?7 x3 k, \# ~$ r& p
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;. ]- e2 g+ ^- L6 ^9 V1 C
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static int acnt = 512;" j6 O/ L4 f W$ Z$ O o
static int bcnt = 8;8 H& V+ `! K/ I4 { A
static int ccnt = 8;7 g5 _& z2 F: p
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module_param(acnt, int, S_IRUGO);1 k5 W: T- X& r$ X3 H2 Y
module_param(bcnt, int, S_IRUGO);. Y2 [# a: ~6 k. L
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