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 y: J0 B) x! i$ s& A: g
* edma_test.c
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*
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* brief EDMA3 Test Application+ `$ y. p6 N, H3 w& T
*
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* This file contains EDMA3 Test code.( D# ]2 u9 d3 d( y7 U, c! u8 @- v
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE; W; T% Q! I( z, [9 ?. ?2 w ~
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.$ T+ ^* G- R$ r1 g0 o
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or0 E4 D8 m7 y! ~& |
* modify it under the terms of the GNU General Public License as0 u) \+ T5 c! f% X" c
* published by the Free Software Foundation version 2.9 G5 Q$ l, r8 }5 z
*
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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: |0 C' P% {+ @& b% T6 w
* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>- d A, Y+ i+ Y0 t0 W2 K7 S
#include <linux/interrupt.h>1 h. }6 W5 k' t! ^* V( w
#include <asm/io.h>0 R) Z( @) p+ W' C* N
#include <linux/moduleparam.h>; H" L" |+ N5 j$ x
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>' f. V l3 R% W: |6 _ O% M0 E
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>4 M: u+ z/ M1 r
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#undef EDMA3_DEBUG0 \( w% W2 q0 @: g; y* S
/*#define EDMA3_DEBUG*/+ G/ I0 F; O, B
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)' t1 _1 F2 }6 A8 y2 N$ G& ]
#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__)7 T' {( s* d; G0 G# f; I7 F% E# T
#else
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#define DMA_PRINTK( x... )# o2 j) u5 H5 H1 W% `
#define DMA_FN_IN/ p- `8 {3 p( N4 V3 w* i1 s/ u) {
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 32 N! A: t# t: T2 f5 h
#define TCINTEN_SHIFT 20: f3 J) _ r7 f% A) V! T V
#define ITCINTEN_SHIFT 21$ Z& W/ R$ }/ j8 D2 y7 b
#define TCCHEN_SHIFT 22, K% q' B7 j# X
#define ITCCHEN_SHIFT 23: N* j. o. Q( M/ |/ H ]
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;* \' Y" O: G, Y; z
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 b( n" |# F4 Z
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);3 ~; c. c0 w8 B0 N5 ?6 c# ^
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;, K5 D5 p, w7 _2 {$ W6 x
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;$ s' o3 G% _: h d/ \
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;! H- l6 ~' ^3 t4 ^
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;; K" k% q4 z4 U* @ L
char *dmabufdest2 = NULL;
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static int acnt = 512;% T0 [0 H- [/ |
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);" e ] v4 s) ], l( X" W5 O
module_param(bcnt, int, S_IRUGO);2 Z4 I; K' O/ ]. j+ J
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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