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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/*0 k1 u- C5 ~) @1 x
* edma_test.c6 \, N0 C3 p0 e4 O
* ], D% ~) j/ o$ c& K0 {
* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.7 Q2 Q$ G- r- P* L5 g+ l6 n: v
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE4 \# C; |0 ^- ~9 l/ k
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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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# k8 }8 S6 v- ]7 T' r8 C
* modify it under the terms of the GNU General Public License as: \# y4 ^: a( ]7 P# W+ \
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any- H0 U% _+ A: ?
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the k6 A, k. u, t- ^9 M
* GNU General Public License for more details.$ X% B/ |$ B, O
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#include <linux/module.h>* j) ~6 L3 x( P' L# Y
#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> S2 W# F2 m8 O2 {" v
#include <asm/io.h>
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#include <linux/moduleparam.h>* D& j6 Y- l. [6 x
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>) D5 @7 e- ~1 g1 m! `! S/ U$ E4 |$ L
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#include <mach/memory.h>4 m2 \" |" ~/ f7 G3 r7 r* O7 a
#include <mach/hardware.h>9 v0 W: J* x$ {& @/ K
#include <mach/irqs.h> ^5 H9 p( V- k3 K. S
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG8 s4 H4 ?& {0 m! M4 H
/*#define EDMA3_DEBUG*/1 f0 M4 [0 n3 C/ h* F! o
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#ifdef EDMA3_DEBUG0 s; Q6 ^. q+ V
#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__)
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#else0 J5 ?' Z% u4 z- {& G+ x
#define DMA_PRINTK( x... )
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#define DMA_FN_IN6 F$ }' l, o! T9 _& p
#define DMA_FN_OUT. L* J- D9 i7 c! g" z
#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/ B4 O/ f/ t5 c1 y8 q7 m" ]# i
#define ITCINTEN_SHIFT 21- a: B/ c5 T) o9 ]0 M
#define TCCHEN_SHIFT 22+ V+ e/ L- T" ]: Y- E0 x% l1 ]
#define ITCCHEN_SHIFT 23! ]' X. r. {# S
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static volatile int irqraised1 = 0; v5 e- M1 Y& |) h
static volatile int irqraised2 = 0;, D% y! S. R4 d
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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);3 b; \1 H8 v G, S. J- [$ u
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;/ k. \7 Z, c* `- Y) B6 J) _4 N9 S
dma_addr_t dmaphysdest1 = 0;3 x0 a/ ?$ `' q- a
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;: H! A' V* Q3 l
char *dmabufsrc2 = NULL;! P/ U% ^+ X- |6 y; f
char *dmabufdest1 = NULL; }8 r x7 C6 I2 J+ M* h
char *dmabufdest2 = NULL;
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static int acnt = 512;* k j9 |* s9 f S# m# H
static int bcnt = 8;6 @* v, ~6 {" D5 n5 V1 y0 W. E/ w
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);" \% w* r9 ` ~% u1 ~5 M- B
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