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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/*9 u3 t' t7 g8 _
* edma_test.c5 q( P( I9 f3 `( H. ^% `8 ?5 w: ]
*
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* brief EDMA3 Test Application0 ?+ l8 G/ V+ p
*
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* This file contains EDMA3 Test code.# Z7 d* g/ W- A/ [$ w5 y6 j' o% q
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE* R6 j. \8 d: `8 ~% J. U% O
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT, a, D. D7 `! S0 t
* TO CHANGE.) g! Q+ F, T" O
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/# a# }& K1 `( t. C' q" X
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* This program is free software; you can redistribute it and/or6 P% z O. A. p- i% F8 m
* 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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* c6 D' m5 L" ?' |3 \, u: O
* 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; l3 {% D/ @0 A+ u$ I2 _( i$ ]
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.9 C0 M# q; I5 I+ V
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>) x0 A3 W7 M' B2 P$ O7 T' f2 t
#include <linux/types.h>7 ?7 j h8 R! |* I0 W
#include <linux/interrupt.h>
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#include <asm/io.h>1 R( L' |5 E! N1 Y1 c, T- n
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>, m: A$ \2 C. v, b' R- W: J# \
#include <linux/mm.h>2 m0 D) |; m7 g- ?. ^3 t8 R/ N
#include <linux/dma-mapping.h>7 W3 a. P% R: c
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#include <mach/memory.h>3 I$ h0 ]6 r! O
#include <mach/hardware.h>
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#include <mach/irqs.h>% q. Q8 }3 z( q, q+ i* [
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/$ ~8 O/ ? V6 p, w% u
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# p, [% L0 [+ Q2 f$ h, S1 G
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT0 x+ s8 ?5 e/ d! y0 X- G; a1 G( i
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)7 E$ T0 p" T# E5 w5 B
#define STATIC_SHIFT 37 K* m' p& _. ^$ F
#define TCINTEN_SHIFT 208 }2 O0 G4 }+ [4 Z
#define ITCINTEN_SHIFT 21+ G/ t8 I/ K" v0 T% s5 L [
#define TCCHEN_SHIFT 22/ |) D- a! q5 X2 O6 Y: s6 c$ i
#define ITCCHEN_SHIFT 231 e3 D1 \9 w; Q+ R7 ^6 Z. k
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static volatile int irqraised1 = 0;9 Z4 }3 ^8 ]' j- }# q# B
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;0 V& x+ S: u& H, j
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0; j2 X# c* p& U2 e& D) z
dma_addr_t dmaphysdest2 = 0;2 p( C6 Z, {! r
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char *dmabufsrc1 = NULL;9 k+ [: I, H, ?, g5 n D$ d8 p A
char *dmabufsrc2 = NULL;! z/ R, I( O- A
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;
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static int ccnt = 8;1 j5 e( B7 G1 c# ?% I8 e
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module_param(acnt, int, S_IRUGO);- ~+ _; M/ E& W& i5 k
module_param(bcnt, int, S_IRUGO);( t, i; t9 `$ E7 _
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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