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) B, M: v7 z1 r( s
/*
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* edma_test.c7 L( `' u1 g- {& r- R$ p
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* brief EDMA3 Test Application2 z0 e( Z3 K; D$ r$ R7 y
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* This file contains EDMA3 Test code.9 ~! k3 }* ~4 C. S, r1 N$ F$ Y
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* 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
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* TO CHANGE.& b( I, w. p; {
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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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& ]- s+ J: j5 P
* published by the Free Software Foundation version 2." z/ G6 W& F9 K+ V
*
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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
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ]$ X$ X1 Y2 a, Y- C- {
* GNU General Public License for more details.& F) d0 @/ ?1 Q C, F
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#include <linux/module.h>8 B# }# d3 m7 k3 Z" A2 s! i& E
#include <linux/init.h># L' d2 A3 c+ {$ \9 f3 m+ S
#include <linux/errno.h>
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#include <linux/types.h>; R0 R* e/ X2 h
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>& T/ f" ] [* e
#include <linux/sysctl.h>, z$ o: Z2 l' }% q1 ~
#include <linux/mm.h>
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#include <linux/dma-mapping.h>+ m7 h1 {5 X2 x
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#include <mach/memory.h> i" c2 p% ?. M; `4 H$ I2 K* f
#include <mach/hardware.h>' Z% C/ ]3 y2 J! y( X0 C# f
#include <mach/irqs.h>9 g0 T3 W! M/ W* J: ]
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG/ z/ q6 ?7 v! \7 O
/*#define EDMA3_DEBUG*/1 L/ B+ M& m/ J3 Z
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)+ a6 w& b5 }' r \% ^1 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__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN; ]3 c8 u) f" a" w6 y
#define DMA_FN_OUT$ n+ a0 C* n' o$ s: o$ Z7 C: P
#endif* o# ]& g' n% }) S2 r' A0 v
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)! n1 c9 Y5 A3 H2 K9 G/ a1 b5 s
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23, r- e9 u9 l8 a4 _1 K8 Z n" v0 q, g7 R
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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);% P/ d' N& P5 S7 s. u/ P
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; _2 i/ p: N* i) f, Y
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# B+ O4 M* W* N4 u4 H3 _+ T
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;. i5 m% D' h+ F- j
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;6 V7 ?; A: W9 T; E! V
char *dmabufsrc2 = NULL;2 M9 P9 J' M1 y0 ]* ?" _$ B" F
char *dmabufdest1 = NULL;* B8 i6 k: \3 u% S. P: c& a3 N; U* y
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;& W" a+ ^+ w: @2 w0 a2 A; C7 U% l7 l
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);
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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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