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 application1 T1 m& C' D$ G8 N. Z+ U
/*
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* edma_test.c0 }( N+ m i0 i
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.& `3 d* k# X. D9 t9 Q
*- \0 a! P5 |& h
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT+ o: ~" p3 A' c' g1 |
* TO CHANGE.2 ?2 X' i" E9 J9 W/ G
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/& Z9 Q6 j- @* P4 O0 G
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* This program is free software; you can redistribute it and/or9 o; {4 f1 b0 C; [8 J
* modify it under the terms of the GNU General Public License as9 p/ a5 t7 A( [2 ~
* published by the Free Software Foundation version 2.6 }7 Z2 }& p+ Z) H+ c/ T
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any3 k: W& d8 @$ I% H) _: P0 q
* 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.
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*/5 ?- |) w+ d+ O# A
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#include <linux/module.h> B% k+ E( X$ H" R& u0 z! p0 j
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>1 _1 i$ r" O: l: j6 J) z! b
#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>
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#include <mach/memory.h>
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#include <mach/hardware.h>7 s1 D1 e1 u9 }- {2 P; T/ ^) R" X
#include <mach/irqs.h>' N, U: }8 r v1 h0 A
#include <asm/hardware/edma.h>: W F9 Q E5 S) K, \# P6 Y
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#undef EDMA3_DEBUG; e+ O( S4 V* T# u3 p2 {: [1 E
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG$ s9 L$ Z+ H& a: \
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#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__)! g7 U: k- d: n8 V- l: a
#else
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#define DMA_PRINTK( x... )6 C) ~$ F& x& x1 A1 d( I3 s$ j) X. a
#define DMA_FN_IN
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#define DMA_FN_OUT2 T( y9 g, q! r1 D# v
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 38 n4 p, ?3 z& }" B% h# a
#define TCINTEN_SHIFT 20. A1 \$ v7 ?0 i* ?- [( A8 b1 `& s+ Y
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23$ F: X6 l6 ~' F3 p9 Z' U
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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);# N3 F: m0 b# e/ H3 _8 d3 N& Z
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 L- @) I& ^! h: U) M! J: m2 z- L
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( z ~+ x2 @- K5 N9 J6 A
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dma_addr_t dmaphyssrc1 = 0;8 [3 R" K7 Y, b1 }* ^. y
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;5 H5 b# [' d7 u, a3 j
char *dmabufsrc2 = NULL;2 p+ y7 R8 K3 p s* P! D
char *dmabufdest1 = NULL;4 n% Y5 n1 A9 I5 F
char *dmabufdest2 = NULL;. f$ W7 c$ x& ?* G4 H
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static int acnt = 512; Z( {- c( B) O
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);9 p* s0 b+ C( i9 w( {6 T' ?" l( I
module_param(bcnt, int, S_IRUGO);8 A! Y( M: [( w1 ?# }1 y
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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