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& O) L7 D: m6 y- ]% ^5 ]0 \" Z
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* edma_test.c
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.) X9 z' q0 a6 a0 B5 l
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT1 G6 ]; Y* u& s, Q* ~; C
* TO CHANGE.9 F9 u1 O: v. ?; j' H ~2 Q
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/) p& [$ P7 l+ s4 b1 {$ _( _- c
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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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*
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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 warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the/ R; [! R# e8 M1 u1 U" x9 l5 c
* GNU General Public License for more details.
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*/
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#include <linux/module.h>+ a/ @. k7 v0 S, a9 o: O! D
#include <linux/init.h>% e) \ F7 ]% E3 u7 [
#include <linux/errno.h>
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#include <linux/types.h>* e7 |/ F. j8 i6 c5 U8 D; ]; E
#include <linux/interrupt.h>
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#include <asm/io.h>! w& ?# i0 H( A- z6 u" Y
#include <linux/moduleparam.h>' I c- m) q9 x/ }: I: t3 U! n" g# t
#include <linux/sysctl.h>0 @$ I/ X3 D+ G% p0 T1 F/ z
#include <linux/mm.h>3 s* j* `9 g9 J7 o C
#include <linux/dma-mapping.h>% n$ T, Y% o: W1 M' X' u, ^; S8 I
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>2 c& E# J# S+ Z9 x% F0 l+ l" A
#include <asm/hardware/edma.h>9 `4 W2 J: k) f6 v
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#undef EDMA3_DEBUG! V }, f7 m- b9 j
/*#define EDMA3_DEBUG*/- }& H. e6 y9 X
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#ifdef EDMA3_DEBUG- {- K. W- X o2 l u" z
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)7 C7 [7 P. ? Z) R. u
#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__)# B9 }) ^2 k5 j) d
#else! O+ _- X1 F; k& _ L9 [1 H$ l
#define DMA_PRINTK( x... )
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#define DMA_FN_IN- d, ^$ ?; j# H# t9 R: @
#define DMA_FN_OUT$ J* d) \4 Q6 J1 Z2 N$ {
#endif. G& T/ s V7 f9 a" q
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#define MAX_DMA_TRANSFER_IN_BYTES (32768), T- g" a* s6 R, W1 F
#define STATIC_SHIFT 3 p2 ~1 V/ v+ a. ]0 ?
#define TCINTEN_SHIFT 20/ J' w# ~4 _. e3 _; C3 o
#define ITCINTEN_SHIFT 21: g( Y/ A' n5 `. k; @ ~: `
#define TCCHEN_SHIFT 22) \% e/ q# C. y& n6 u; e- w8 L
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;3 k% T6 w: k! Y
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);- O- ~5 @, n6 S; ~5 A9 d
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dma_addr_t dmaphyssrc1 = 0;( R! Z4 c8 a5 b+ P7 [6 ^
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;( H3 o0 a6 f* ^4 O1 j, k% o
char *dmabufsrc2 = NULL;% B7 K2 C- I0 C0 _$ V- U
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;0 T& `6 Q9 k3 _0 N; ]
static int ccnt = 8; `( @7 u# c, m* G! ~
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);+ z- S" W, y. h; o
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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