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.c
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*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.8 s6 V$ O q( H z# U3 n
*
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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.& ]( P8 h" v" g
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/( P, F1 a; t+ D/ k1 \
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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 as4 ~/ c5 I' `5 v0 x
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any: T. ?+ D) r: g D* O+ ^1 J
* 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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*/4 p% C2 {. o2 i8 y
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>/ |: O0 \4 u$ C( Q; T; s: _! j
#include <linux/types.h>
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#include <linux/interrupt.h>* I7 W. Y* X9 m4 `3 E
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>; `2 L, C- P U4 F5 G
#include <linux/mm.h>
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#include <linux/dma-mapping.h>6 j: H0 j) W9 }8 i7 |& Q4 X
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>: a% W. S5 u$ K/ }
#include <asm/hardware/edma.h>: P, c4 o' S9 N# p' i' i% W
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#undef EDMA3_DEBUG" t/ X* C }8 R2 F9 r; L
/*#define EDMA3_DEBUG*/2 D$ x0 V1 P% Q6 G
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#ifdef EDMA3_DEBUG5 ~. y$ a+ H2 y
#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__)1 B: M6 T: O, r6 P3 ]' K1 L
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else1 ]4 A2 B5 L0 w* ^
#define DMA_PRINTK( x... )5 H; K. q" x3 Y
#define DMA_FN_IN+ i& [+ u" q( O. ~! L* m2 M% C
#define DMA_FN_OUT. }- U: B# H% k5 G0 e$ r/ K! K
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3+ b0 s& z7 M6 p$ I
#define TCINTEN_SHIFT 207 n/ }' _: ?5 |: X
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22, q' E/ n) i1 A' _& ?) ^$ O9 N
#define ITCCHEN_SHIFT 238 h, X4 {7 E$ d i1 P6 U, {
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static volatile int irqraised1 = 0; [0 }3 X$ O2 e0 e7 \
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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 F& w9 G! m5 }5 O9 G) Z# e) ~
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# O$ s/ ~7 `2 m# c- z$ d
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dma_addr_t dmaphyssrc1 = 0;! b2 l$ v- T& a; x2 Q) W
dma_addr_t dmaphyssrc2 = 0;! O% g: ^. J3 X- |' v$ }+ z
dma_addr_t dmaphysdest1 = 0;5 J1 O' U) _4 f; H
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;( {: A G) S/ S& f6 B s3 V R# L) G
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;2 {0 M% ^4 Z/ [# V+ Y) t
char *dmabufdest2 = NULL;; _: [1 a' T5 [3 t1 @* t( R
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static int acnt = 512; u D0 ^& v, w7 ]
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);9 ]% ^) L0 v; c6 }' o
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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