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: ~; E: e: Z& S9 y( C
*
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* brief EDMA3 Test Application, q0 c; f0 b: V/ Y( J
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* This file contains EDMA3 Test code.4 a! j, t- v' _) P! k5 e5 {2 k( ]% s
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE9 U0 I4 {; j0 R, q/ _+ R) ^
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.( q1 g* Y9 R* N' V
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com// ?; p( g7 x5 l/ W8 U% D3 V1 C, g
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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& ]# u' b1 O' m* ]$ g' Y
* published by the Free Software Foundation version 2. V6 r& S' X1 w( K
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any" E" C. D2 n$ c. L' |
* 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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*/
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#include <linux/module.h>, f5 W6 S( d8 v3 m4 e
#include <linux/init.h>- G% _! E1 V$ [+ b2 `4 A* x2 S8 g
#include <linux/errno.h>
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#include <linux/types.h>3 Z. V8 L9 O0 ]; X- J Q
#include <linux/interrupt.h>3 b d5 m# `; o
#include <asm/io.h>, u5 t& p1 P5 m, N- S' h
#include <linux/moduleparam.h>1 m( H C4 G0 ~; a$ m! r" G3 X
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>& H6 }3 z# ]8 m; e
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#undef EDMA3_DEBUG5 G1 x5 B" l2 _' v7 R. N
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG% P L" ~5 m, D: g. d
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)6 x+ r* b8 I% t( r, m$ V' S8 w
#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__)7 F6 k0 s! a3 t( A% ?! f) y
#else
#define DMA_PRINTK( x... )
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#define DMA_FN_IN7 _$ @% q8 I5 ]
#define DMA_FN_OUT q# N+ j! W2 Z
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 38 V# I3 X& q) |$ T: h
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;. ^1 k3 S7 C8 ^% n, z
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);/ p- D' d- A6 d8 w B4 u
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 b& K8 @6 B1 }: u/ Q/ X$ P: Z6 C
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;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;) r M+ X+ H/ I/ d) D. j+ b( ?& S6 ^
dma_addr_t dmaphysdest2 = 0;+ F+ x; M' |2 L- B- t% ~2 t1 V
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;/ ^* ?2 M! v( q7 v! h5 o
char *dmabufdest1 = NULL;+ }, _' b& F% c. L3 F) i
char *dmabufdest2 = NULL;
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static int acnt = 512;/ U9 ~' {: I! a5 r6 ~* b7 _
static int bcnt = 8;: X/ C/ A- B' X6 B2 q7 f; X
static int ccnt = 8;) L E) i; t8 r, w% ?
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module_param(acnt, int, S_IRUGO);
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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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