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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* edma_test.c
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*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.$ M- G; {- H4 w+ h8 T6 H
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE' P; \- u* |, @8 Y/ F2 R1 n, n
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT0 N. v3 u/ W# x3 D5 x
* TO CHANGE., E( P6 W X0 b; H- ?* x4 w p
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/6 M/ l0 Y' Z8 a2 A! R2 f$ |
*
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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( L+ B. u& c1 a* ?- F% K
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any& Z: F" e3 ]7 Q0 H5 q
* kind, whether express or implied; without even the implied warranty" `# Z: t+ G1 l4 J2 Y8 V
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.9 o1 v2 C+ L. f$ r( s3 _& c9 m
*/
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#include <linux/module.h>
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#include <linux/init.h>5 V1 o# ]/ Y1 b8 x3 g3 q
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>8 s( p4 r# D, d6 F
#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>
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#include <linux/dma-mapping.h>9 L; m0 Z$ J6 W& `+ F
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#include <mach/memory.h>
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#include <mach/hardware.h>' S" M( R. ~' D. m: s( m& i
#include <mach/irqs.h>2 |, K) h) D3 i f$ g3 c3 Y% Z
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/+ L5 \' W$ l' D [9 y0 Q
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS). T2 q, p$ j" x c* l$ j
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__): |, A# a6 o! D* m5 H# d# a
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)# A0 N2 c/ @6 {0 j1 g
#else
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#define DMA_PRINTK( x... )4 X* T2 `) i; |
#define DMA_FN_IN) P a- x' a( B' {5 s
#define DMA_FN_OUT0 ^6 I$ D; b1 w; G/ J6 h
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20) J/ h& X, a. |! O2 P
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23- o# I3 }' o3 E5 `
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static volatile int irqraised1 = 0;+ y+ b2 B! q- ]4 @
static volatile int irqraised2 = 0;+ P' |% C: D# h' r& m- [
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' L, g' G- @/ p/ ^
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;- n4 i& }' ^% d
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;& ]. Q% g% n3 m& d }, ~2 k; v- P
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char *dmabufsrc1 = NULL;9 c! v& w2 T7 m
char *dmabufsrc2 = NULL;& d+ g3 E' p, i5 h" c3 ~, D
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;7 Y7 x9 F3 t, Z9 L% n1 x" x5 a
static int ccnt = 8;5 k6 l y2 k! ?& P$ E# a, M: e
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);' W+ R$ _8 L/ [/ A O
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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