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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/*+ v1 G3 }* X) Z2 _0 V0 _
* edma_test.c/ a' n- m3 a: A8 l- [2 o+ Q
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.' e7 O& B5 _( ?
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE: u3 K1 X7 f- S) L2 g8 U
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT# k( r3 {/ |, T6 Q( K+ j0 e, f
* TO CHANGE.
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*
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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
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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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* This program is distributed "as is" WITHOUT ANY WARRANTY of any1 o# O" h) T- u' h; R N$ Z! z
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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#include <linux/module.h>" f! V1 G, F3 ?" z: Q
#include <linux/init.h>3 L2 Q1 X3 G4 U% j$ C# _
#include <linux/errno.h>* [2 N# L+ i, X. |$ B
#include <linux/types.h>2 ~2 B9 b/ C0 a7 [- ~( t
#include <linux/interrupt.h>
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#include <asm/io.h>+ \2 f! o1 }* |6 q, b6 r
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>0 D9 d% A# j, B) W
#include <linux/dma-mapping.h>
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#include <mach/memory.h>2 Z1 u1 x8 O; O8 ]. L. S k
#include <mach/hardware.h>2 `# n6 ?2 y- a
#include <mach/irqs.h>6 U) y) [, x* C$ S4 L1 V
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG# K5 A) b" H9 l5 b: J0 D" [8 h
/*#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). _, {$ m) B: Y# E& A
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)% @, C- w8 T$ b) Q% ]8 w1 s# Y
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)/ ~7 q9 ~, T! [, [* b
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN4 [5 q: O$ _+ O( ?6 W; o
#define DMA_FN_OUT4 Z3 X R' f0 p: i
#endif' l) b( w% s5 R% O- ^- [" M
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#define MAX_DMA_TRANSFER_IN_BYTES (32768), ]0 S" W( ~$ }6 F
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20 T6 `* \0 r8 y$ A
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22, P- A6 ?: v- ~# b2 Q
#define ITCCHEN_SHIFT 23
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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);1 h- Q' G/ ~- ?& x
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 }- `0 i2 h" f
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 y4 F6 ~& h+ G* O7 k/ }$ N
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;3 t1 m) T5 k' V% M. y
dma_addr_t dmaphysdest2 = 0;
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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;' H% T# c# b- H, o! y8 U
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;5 h% _, ?8 o8 O& r$ e" r
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module_param(acnt, int, S_IRUGO);1 \2 ]: u0 P, ^# V" F6 X! s* y
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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