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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/*7 a+ \) M5 g" z; u0 S0 J
* edma_test.c/ {2 k* u# I E7 p' M
*
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/4 P* E% O7 X3 c0 ]9 L0 {. ]6 Z# R8 k
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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+ j; T/ ?# l; f9 P
* kind, whether express or implied; without even the implied warranty( N7 F& }% f0 E3 A I& Y
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, h9 A; L9 K1 k$ V: p/ f$ e
* GNU General Public License for more details." c! ]; Z4 t) n, A
*/
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#include <linux/module.h>
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#include <linux/init.h>/ z: H& f- \2 W4 r0 \+ C4 u. }
#include <linux/errno.h>
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#include <linux/types.h>8 W" f" y- Z& @
#include <linux/interrupt.h>
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#include <asm/io.h>* f) G5 Y; `- b- i6 S: M; F0 q
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>4 L( d' x8 s% Y/ G4 n+ } h
#include <linux/dma-mapping.h>; [" o0 q2 ^) R
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#include <mach/memory.h>
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#include <mach/hardware.h>3 p$ w% r4 S6 \: O: z- ]
#include <mach/irqs.h>+ G1 v! j- c0 m9 m4 Y
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/% g( i; q6 i0 n; q' u4 d; J% T: |' g
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)! y8 z' W7 h% w( e! L
#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... )! D, k1 }: \ U9 O0 Z
#define DMA_FN_IN7 ^- J6 A* M' W; [" j
#define DMA_FN_OUT
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#endif9 S$ x1 M6 R6 I# T9 o
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)" n7 B2 \' }6 O% ?; L+ A& O
#define STATIC_SHIFT 3# G+ l7 Y. P1 I9 t! S
#define TCINTEN_SHIFT 201 G1 p) p8 |9 R# l. m; ]
#define ITCINTEN_SHIFT 21: M2 M4 r* f; [5 i; N
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 239 I; J1 t$ n) F
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;' w# Q3 d5 m/ B7 P/ l
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 f9 R. U v6 w# f" A
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ c8 G0 G, e$ S5 I1 O
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dma_addr_t dmaphyssrc1 = 0;( M2 |- O2 D5 D2 m
dma_addr_t dmaphyssrc2 = 0;! W" v: P% A& j4 e
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;5 y1 S M. F6 ?! {- O! I+ S
char *dmabufsrc2 = NULL;2 \4 t5 U! G4 ~
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;
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static int ccnt = 8; [/ |# Z" p4 C6 |
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);. [8 z- x; A! W6 A2 y* D+ f
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