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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/*8 ~( P- Y3 A3 f" r, \. Y
* edma_test.c
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*
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* brief EDMA3 Test Application' @" S! h4 n! k2 P# Y% s! W& [" Q
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* This file contains EDMA3 Test code.# o% C5 {' F" y+ R
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE! i- W! W" P/ @/ S7 C5 [; Y9 B
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT% x$ `& @& u3 V
* TO CHANGE.# l" g0 u& g% K" Q5 k! b
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or/ S" f- [+ b1 b" K9 I0 J0 N
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.0 J$ t1 f) y% n) l2 Y
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any5 c2 \8 i* \7 q8 Z, |
* kind, whether express or implied; without even the implied warranty5 U/ F3 j, u; q! e. N
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the: u. J5 h& F$ z. E1 S; k& ~
* GNU General Public License for more details.
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*/
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#include <linux/module.h>! o1 I: M( [$ b, W% g( h
#include <linux/init.h>
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#include <linux/errno.h>7 }0 Z9 y) E: B1 x& ~3 r0 {
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>8 B+ l9 j; ~: O: w" Q
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>: Y' T2 y1 e2 Z `9 c8 l+ i
#include <linux/dma-mapping.h>
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#include <mach/memory.h>+ ~* b$ C" m3 I; i
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>3 s J$ [% ^# s- U! ~5 _
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#undef EDMA3_DEBUG. ~5 ^+ j) I. r3 S0 W5 L
/*#define EDMA3_DEBUG*/8 ?9 i4 H9 F% |
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)* l3 d3 ]( S3 I/ o: Z# P
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)1 C1 p' W& K, D) u+ s, O i
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)! K6 N) }1 p( j
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN6 Z% s, _; u: c
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 201 h" C2 A# |* L1 K0 O
#define ITCINTEN_SHIFT 21$ a4 D1 w% q6 O: U4 v, _% h' j6 Y" o
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 235 b' N! X$ [* s/ k4 R' L& a
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static volatile int irqraised1 = 0;# a! V2 q7 \/ E; |* F$ z% A
static volatile int irqraised2 = 0;3 `7 t( W F* `3 h) L: M) M: Q$ H
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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);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& B# V. R) i+ ?
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dma_addr_t dmaphyssrc1 = 0;7 B. w2 P1 C& u$ I Y* H5 n
dma_addr_t dmaphyssrc2 = 0;5 E5 [& e1 R. t4 s# x; L3 U5 p
dma_addr_t dmaphysdest1 = 0;. f! ]5 b. `1 J! o) e
dma_addr_t dmaphysdest2 = 0;& {/ M) C9 |) g; Z" y) D8 |
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char *dmabufsrc1 = NULL;0 ?5 x2 T$ e( J+ J) X
char *dmabufsrc2 = NULL;3 Q3 L; @" T# [- z
char *dmabufdest1 = NULL;1 l: x$ }/ N3 F8 k8 }
char *dmabufdest2 = NULL;! y2 h! e* [. J
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static int acnt = 512;
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static int bcnt = 8; I" W! ]* Q9 _" g9 h
static int ccnt = 8;* c% |- f2 \( t- k
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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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