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: c2 l* ^) r1 g) s" ]* \" e
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* edma_test.c
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.7 \ A1 }, x6 m- `% A
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE7 V6 W( \* F9 |) a6 n/ i
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.6 }! T8 |; L' F, j% B/ F, i. K
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/: p0 {0 j( ]( d; I9 K: `) A
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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 as6 s* u) R% D w+ N+ q
* published by the Free Software Foundation version 2.. d0 S0 x* ^, `0 L! [1 v" v
*
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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 warranty9 r" E. F; \' [0 C
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, h! o N) \+ @2 s# L# D( f
* GNU General Public License for more details.
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*/
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#include <linux/module.h>' v6 ?% O0 Y! N, A
#include <linux/init.h> l5 v! H& f h" G0 Y, ?8 k
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>9 P: a8 L6 k4 l$ O
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>4 ^& }8 n L( T% ], x4 p
#include <linux/mm.h>) @0 Y4 S5 N, K1 v( V
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>8 m) Y* L- k0 B
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG! q5 V' n C, B# K
/*#define EDMA3_DEBUG*/+ y# g# R) |; w6 `6 d+ }1 Q
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)+ P8 ?+ f$ m6 S, a$ c
#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__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN5 W8 a, E* C8 s
#define DMA_FN_OUT
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#endif! b! [, }9 L4 M" c6 i# S5 [
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3- P7 ]8 ~) ]% ]
#define TCINTEN_SHIFT 20) M1 g( i E+ e6 Z1 {
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23. f) F. b, B* X5 |9 H
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static volatile int irqraised1 = 0;9 y1 E# K, w8 L" t3 d. g- X$ [
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);& w; P2 F+ q% \; j9 X# h
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;1 n2 _& R x2 I" J2 a, j3 Z
dma_addr_t dmaphyssrc2 = 0;9 G# ~7 K! o2 J$ e/ M
dma_addr_t dmaphysdest1 = 0;2 M. z% x& D8 s( r! {* [% O
dma_addr_t dmaphysdest2 = 0;1 ]; U# p8 Y) ?4 k/ w& N
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char *dmabufsrc1 = NULL;; j9 L d0 M9 f1 Q
char *dmabufsrc2 = NULL;! `0 W/ p. i/ }" o6 n' n/ d+ U
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;& @) z5 Q; j- g
static int bcnt = 8;
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static int ccnt = 8;6 s- O7 I6 O" G: y, N8 M
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module_param(acnt, int, S_IRUGO);+ H% l0 y5 w" s0 }7 A3 j
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