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 application8 h% O+ F" B0 X3 B
/*- u6 X k% v! _( S
* edma_test.c; P) r# ~8 K$ y0 x' S* p; q9 b
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* brief EDMA3 Test Application: x' [3 y8 w+ g) [( s
*
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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" w9 E# E9 N! D& G! ~6 Q
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.. ~& h7 U9 i5 b: u, z# l( Z
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/; U0 }6 Z: @6 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 as1 n. p1 E5 M! X& C- G! b$ s5 k; H
* 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
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* kind, whether express or implied; without even the implied warranty1 {+ M8 u1 B+ Q& [& s1 I1 y. s
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.' ]& S f; `5 m0 H
*/ {! U7 W7 O# o1 F# Y8 ~
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#include <linux/module.h>1 u2 J( h/ i0 Y$ }
#include <linux/init.h># q$ H: c' `+ ^: ]% e
#include <linux/errno.h>. s3 a6 f1 _6 T1 j! h2 e
#include <linux/types.h>2 q0 ^- H$ o* l; Z6 M
#include <linux/interrupt.h>7 P: _/ F+ s' `
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>; e( V/ v( b5 t+ t
#include <linux/mm.h>9 G$ X" }# P5 Y
#include <linux/dma-mapping.h>
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#include <mach/memory.h>7 i7 ^+ M3 L8 R) w C3 d
#include <mach/hardware.h>5 Y" E! R! f4 u' \9 _
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>3 z' m0 ?, K( t& M! M, R
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#undef EDMA3_DEBUG1 e/ d0 k& B5 q6 H" R* W
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG8 `9 j8 y) E# M X4 a$ c. k% G
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)8 J- T G' [9 ^0 h. E- A9 ?
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__); [# T* y; t: r) u* |0 {5 J% l( G1 `4 P0 i
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )' u* O K0 h$ U* C: ]- \) Q
#define DMA_FN_IN* z4 `3 Y4 @8 f1 T
#define DMA_FN_OUT, x5 @* a' A/ q( _+ ]' x
#endif# i; j% w/ b4 } y
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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 208 ]0 {5 G" l4 b* j6 G
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 230 d3 P) G* O" f; o# t2 R
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static volatile int irqraised1 = 0;# l7 j% d( X* H8 A" j
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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# Z. J B8 T! w0 R
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;1 ~- ?& j. e; K! @
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;$ a$ ~/ T8 Z z3 ]' |, b
dma_addr_t dmaphysdest2 = 0;/ n1 g! ]5 F, Y/ X' i+ u ]
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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;$ T$ T; {* V8 d
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static int acnt = 512;8 P+ h- [ v5 `, l* |$ A& E' s+ b1 C, Q
static int bcnt = 8;
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static int ccnt = 8;8 B0 j0 h% T5 Q G
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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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