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.c
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* brief EDMA3 Test Application" u2 d9 b& O# h; Y' F4 ~4 ?: |
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* This file contains EDMA3 Test code.4 J% c; @' B7 n! g
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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: L6 b3 ~+ s+ n6 p, ]
* TO CHANGE.6 b. M) J% `0 \ U6 U
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/4 E0 h0 R- \: U
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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 as3 n; z% n+ e9 w# D6 f* B7 |# c
* published by the Free Software Foundation version 2.5 g1 m' s4 }. V S
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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 warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the* U) r" Q+ J. l$ P: f
* GNU General Public License for more details.0 `7 v1 B: y0 I# _; o
*/) i" m9 W& o' o. F k
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#include <linux/module.h>% g6 I: g2 y. p( F2 h- I2 P
#include <linux/init.h>/ y: m7 G7 w+ Z% Y
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>4 q/ x! j0 X( m \; m; [4 y
#include <asm/io.h>
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#include <linux/moduleparam.h>. m1 e+ j- C; h$ L: M3 w E. Q
#include <linux/sysctl.h>! G" e G* @6 D* |" m2 c
#include <linux/mm.h>6 ]' `% w+ I \ _4 V1 P+ ^0 x _: F
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>5 E6 ^8 ]2 d: J' X `5 a5 L
#include <mach/irqs.h># A4 S+ ~& U+ h. D% N9 E
#include <asm/hardware/edma.h>9 x3 A A1 {2 ~9 F+ Y) q
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG! X) t: Q4 w) [3 d1 X! D
#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__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)8 ^6 f ~' a) A
#else
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#define DMA_PRINTK( x... )' B% T/ C8 t! l3 D
#define DMA_FN_IN
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#define DMA_FN_OUT2 z) v G0 e+ J
#endif$ W' M* W: S7 {; a; t$ o
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3% }7 a: ~, P5 r8 S+ M. ~5 Y
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 213 r/ g8 `* B0 e0 b
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23/ f) z, D, [& l( {& n0 c
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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);$ ?" b a' [% x8 P2 g
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: C4 o' w/ `& m- A" F
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% h4 i$ ]- i0 M1 a3 a
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;8 V2 _) W% w$ M
dma_addr_t dmaphysdest1 = 0;) v a# W. V& y" m2 e) Z
dma_addr_t dmaphysdest2 = 0;" [- M3 x( S" o3 Q% C
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;- ]. ?1 Z- q- | e! s/ H" `% c
char *dmabufdest1 = NULL;! Y! J% M% J5 f% O- i) _" _# x d
char *dmabufdest2 = NULL;
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static int acnt = 512;. n) o6 v$ T6 A* s4 Z9 y! ~
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);- g2 D, M4 x" S5 W
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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