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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/*+ F3 t$ ^7 |8 S# i B
* edma_test.c
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*
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* brief EDMA3 Test Application0 U$ ~. R2 o9 P, S% J
*
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* This file contains EDMA3 Test code.; a j+ N2 v! m" {
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE5 c3 W- t) B4 @# M
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT" A& d, E2 B# T
* TO CHANGE.$ s% w: Y9 P( ~1 c; J4 m6 u
*
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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/or6 E9 \% t) E, n
* modify it under the terms of the GNU General Public License as# }! z: D+ z: @
* published by the Free Software Foundation version 2.; Y0 O! y0 F) t6 `
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any! m0 s! Z( x/ U' U- \0 k0 {3 k2 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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#include <linux/module.h>
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#include <linux/init.h>, S2 r4 e. M+ c2 {/ Z# x$ N2 I
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>* m. m% W. W8 l2 ^
#include <asm/io.h># v/ Z5 U% m2 F5 j* h* s1 k+ y
#include <linux/moduleparam.h>/ r+ F& v4 m0 J7 f: J8 {+ `4 q
#include <linux/sysctl.h>
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#include <linux/mm.h>- {% ^. @+ @8 g# w# V8 F F1 j* x O
#include <linux/dma-mapping.h>! W4 ]. I5 x9 c* D
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#include <mach/memory.h>. v0 d. I2 }/ k) k2 I* `; M
#include <mach/hardware.h>$ y& V- r+ Q {; t) n3 X. K5 b
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>8 G( z" U3 W; E) U
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#undef EDMA3_DEBUG4 C# S' Q0 H$ t
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG" J+ d# y+ P; @2 z
#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__): x: f, Q- f: @+ N- }8 b% H
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)' [# E2 [0 H# p7 }, O" _, G
#else: K; l3 b% d9 K2 P% p% i
#define DMA_PRINTK( x... )1 k5 F0 I) b, T5 s6 S. n
#define DMA_FN_IN3 _$ K! l3 F Z7 e4 _6 O. Q( m
#define DMA_FN_OUT" A# Q: {1 O _
#endif/ i# f2 o2 |0 a, a) T4 ^# H3 U/ K, d
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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
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#define ITCINTEN_SHIFT 21: U$ @2 p2 z5 x: s% E' M3 n
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 237 P$ V1 {" F, U9 l( J
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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);$ C# m) H0 N C: J. h- z0 n) f" c
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 |- m/ @& O" 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;- t" O/ k9 T5 \" \0 v
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;* N& x( ^7 {# ~! G. X9 ~+ j
dma_addr_t dmaphysdest2 = 0;# E! T8 Y9 \+ g
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;( c$ [6 p2 V1 M, i; ^7 @
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;8 v; _, G. U8 c
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);6 b2 L. e/ j% E
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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动