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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/* l+ s& w8 ^- q) W
* edma_test.c
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** q! G" m: c ?, r6 U7 ~2 L
* brief EDMA3 Test Application
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* This file contains EDMA3 Test code., C: k5 N$ S5 k( z0 b/ 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! h' m9 U+ Y+ X. P* e, s9 ]$ w5 I
* TO CHANGE.8 J8 _0 q, }0 B7 S: z' |
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/6 d8 w. a7 N+ K4 B$ e
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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
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* 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' W# v# w) V, ]) `5 q
* kind, whether express or implied; without even the implied warranty, o9 L. m3 C) y2 k
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the& z: u4 N) u$ v. e
* GNU General Public License for more details.3 y2 r6 u0 k: e% @# o5 j
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#include <linux/module.h>; N, P; A. ]! a$ J0 W- V1 a
#include <linux/init.h>6 q5 @: ?" g3 O9 Q( `
#include <linux/errno.h>
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#include <linux/types.h>4 V! T3 h; f. J, o: T/ v
#include <linux/interrupt.h>3 D7 P a7 n- ^) H6 y9 I$ A
#include <asm/io.h>$ e; v+ I1 i7 W
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>7 P8 i0 p6 E7 o) u9 O" O( Y
#include <linux/mm.h>
#include <linux/dma-mapping.h>% }- M# _0 I9 l, v; V& U F
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#include <mach/memory.h>6 c1 E" ]" {" Z
#include <mach/hardware.h>
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#include <mach/irqs.h>8 |" a) b# Q8 N$ p7 g4 q
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#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__)0 I2 V( J6 z* D5 ~' X
#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
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#define DMA_FN_OUT. D f O# u) |) L, h7 a) e
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)# B5 i: C" d" a" \. {5 P
#define STATIC_SHIFT 3/ T$ Z# r9 v& k: d# Q
#define TCINTEN_SHIFT 204 d1 X f. A @- R
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 230 j% `0 Z3 e& | z) a& d* W/ D
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static volatile int irqraised1 = 0;* z! i0 q- V$ Z2 n9 J( s
static volatile int irqraised2 = 0;- G; ]& m% n# {. r. c
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. e' K1 V; m; k9 U8 {3 C2 c9 V1 `
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! U V$ t; I8 ], k
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ A7 E5 m* u) V- g
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;. t# `7 `. _9 ^2 l
dma_addr_t dmaphysdest1 = 0;1 r- ~ W/ F% Q
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;7 b- v: D; y; |8 }
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;5 z1 Q5 e' ]8 I+ J
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static int acnt = 512;/ H5 B- A0 R% y% o, j# z1 b
static int bcnt = 8;# \6 f' n% k; \, c2 g' o) D
static int ccnt = 8;! e `4 J7 W5 t/ P
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);( J8 C; x9 o. F% P
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