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.c5 j8 f- Y9 `2 j2 n# O' A
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* brief EDMA3 Test Application/ |3 H' r% l$ e) N; Y
*
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE1 l* n2 u% ]- d- `
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.1 i) ~3 M) d" N1 s7 ^* y
*
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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/or( _ @8 h. n Q- Y
* 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 any3 N/ e; _! E: f: ?2 Z+ F
* kind, whether express or implied; without even the implied warranty+ e- b, Y6 P# k+ N" C) [
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the% b! a: R; F. k; c
* GNU General Public License for more details.2 i9 o' ~0 D- N# y/ _
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#include <linux/module.h>
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#include <linux/init.h>0 A4 E' f( g5 a J: d
#include <linux/errno.h>3 ~7 T, I8 }. U3 W
#include <linux/types.h>' J; ], }; Y- N) |( @
#include <linux/interrupt.h>! w/ U9 F) ?" Q
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>5 u% S. J! m) R P4 s, z7 t( B8 ?
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>4 S2 E1 \2 h9 w+ |: R9 l
#include <mach/hardware.h>
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#include <mach/irqs.h>0 T% e2 k/ Q5 Q& c. K. o% E5 Q
#include <asm/hardware/edma.h>1 b! i! P* t$ V) R0 [
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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__)( p" h: ~1 V7 `: g6 l
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)$ r7 `- ~3 i% H. F4 p0 b# s9 W
#else
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#define DMA_PRINTK( x... )) o5 v: ]. k$ I$ b
#define DMA_FN_IN
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#define DMA_FN_OUT) s0 }2 R, w/ t1 D) O# y
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3) |+ _, w) |4 S7 s/ r5 f
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21! v- v. |5 k) }
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;) h# ?' ~% `# o' c: }
static volatile int irqraised2 = 0;/ l- E! N1 r: @6 j, C8 Q: e0 V
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% t9 u. L8 Q) M, e
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 U8 ~; T8 r2 s5 I' ?7 N
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;" e9 y. s) e- j/ ^
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;; \: m; Y- d( b4 w* j1 N _
dma_addr_t dmaphysdest2 = 0;" x# f9 I9 y8 \2 y* a8 a
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;% w( g' H" {& i- t( V1 p+ X
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;! P5 X6 H9 q! f& M: S
static int ccnt = 8;( S7 q, g5 T# W- A: b* O
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module_param(acnt, int, S_IRUGO);& d- a0 j' [( u. j( ]% z) H
module_param(bcnt, int, S_IRUGO);6 K z; h& T1 W+ q
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