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& K, x ~/ o: z
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* edma_test.c
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* brief EDMA3 Test Application
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*
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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 BE* F5 M9 O: z# d7 j
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) O0 A3 n6 T! F% {
* TO CHANGE.! s) J1 ?) G* V/ J
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 w& u0 t g+ ]& j1 ]$ L5 C
*
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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 as0 g1 z. m) L3 U+ d
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any+ l: J2 H0 z6 o2 ^ Q
* kind, whether express or implied; without even the implied warranty% d2 t4 Y$ F" ~, i' ?- I
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the9 a% e7 W) I7 I0 `; D7 Y7 `
* GNU General Public License for more details.$ M, y% ]" J2 k `
*/
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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>
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#include <linux/interrupt.h>: s- l3 M* S! w$ h
#include <asm/io.h>2 i) G- {: k/ p" r) @6 E( C
#include <linux/moduleparam.h>( P @' x2 s2 B' |, v# U, e6 F
#include <linux/sysctl.h>" H: D% f! ]: A# Q
#include <linux/mm.h>
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#include <linux/dma-mapping.h>4 u% a0 R: p$ ]+ `! @% T2 r( U
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>0 t% @' C c" ~2 ^. R# e
#include <asm/hardware/edma.h>! y% Y" b1 f+ B! \( d1 s
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#undef EDMA3_DEBUG" o, `5 g! T* n# r' [
/*#define EDMA3_DEBUG*/* J- |0 q/ D& c6 t) j6 _
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)4 D. c4 \1 ? z1 ]/ B
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)! b! D' n: z) }- B8 a$ W
#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
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768). k( G* T9 j( l& ~
#define STATIC_SHIFT 3- ~, {: E4 L7 H) F3 m
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22; H$ I2 Y' f& F
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;0 e! N/ W8 N) ]4 j7 Q$ ?+ }
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);, h, F d9 P' P; z' T. s6 V& Q" f5 \; U
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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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;; W/ Z4 O( Z& \& M. g& P' R
dma_addr_t dmaphyssrc2 = 0;! |4 r, q: z+ C/ ^
dma_addr_t dmaphysdest1 = 0;# k, }% C2 [3 B h1 |0 U
dma_addr_t dmaphysdest2 = 0;) ?( n1 X8 |" R+ H# l
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;" m% j1 a R% |! }+ b; m% l
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static int acnt = 512;! K+ P" h, @) a/ o2 s3 H
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);2 o2 u- t1 `& A. 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