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 w* D J: O/ d
* edma_test.c
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*6 n$ p% `1 N* H. t- @
* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.5 p8 R* F! [6 O
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE) o7 V4 G7 D& k7 E
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT* J$ D- q( X, I0 H. R1 f
* TO CHANGE.- G. Z- c( ?3 \1 q
*
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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% y8 c* w6 d' _/ J* _" q) i
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.5 i$ i [, U$ }* k( x
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any; z/ v, T$ R& @* i) f
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 H! i+ B" F$ P
* GNU General Public License for more details.
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*/
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#include <linux/module.h>) ^, R0 u$ X: ^: ?" R% e
#include <linux/init.h>3 n8 Y3 f/ ^1 |( x6 w% s: c
#include <linux/errno.h>
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#include <linux/types.h>- |% D, k" ] t/ O' x& r
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>8 V* b5 y; e) g. y/ d+ Y
#include <linux/sysctl.h>
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#include <linux/mm.h>* p6 N( S! g. u; o7 V8 P- g
#include <linux/dma-mapping.h>
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#include <mach/memory.h>1 W7 j$ j- ^7 \; a, R: j+ `
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#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)" i/ h p% ?: U- ^1 F$ d8 A# y
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)! s# y. |9 r& a: s7 A6 D7 c- t
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )2 @0 s+ p7 F% q" ?
#define DMA_FN_IN! p) M8 l, d) Z+ P2 a0 L
#define DMA_FN_OUT; [% L5 M- s: e; O" z9 {- f
#endif2 Z" G. ]" n# y; }, [ B$ P
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 37 _+ J7 h# I! ?) B; G* y
#define TCINTEN_SHIFT 20* G, [* F8 ?; b: b) b' v
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22( h% A* u2 Y3 W, Q; Q6 n: _8 a
#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);
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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);
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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;
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dma_addr_t dmaphysdest2 = 0;; O* K' C R' R+ B3 p$ N! V
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char *dmabufsrc1 = NULL;9 C2 N; M4 h5 R/ J: d- K/ m
char *dmabufsrc2 = NULL;, a+ h9 y1 R4 u- v, Z7 F8 u
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;* N" R- Q3 q+ [9 M0 b
static int bcnt = 8;: g* E1 E" q2 h- o
static int ccnt = 8;0 @; t9 d$ P) }. ?& k% G( ^6 F
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);5 S8 g" T" ~8 g- S6 f( A& J- H
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