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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/*7 p/ W6 h Z# t' C% ]* q% U+ n
* edma_test.c( i/ {2 \5 m$ L
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* brief EDMA3 Test Application' i; c& v) b0 B6 I0 \# @* B
*
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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* ~$ G+ Y. U: e$ z1 B1 [
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.4 `9 ^3 ]' J& V1 b
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/2 A+ s, M, X& p u3 d
*! H. T' c7 ^+ G; U2 a+ d
* This program is free software; you can redistribute it and/or! V1 c2 i4 m; Q
* modify it under the terms of the GNU General Public License as7 N7 h- f, E( N$ z0 r) I
* published by the Free Software Foundation version 2.# e+ K7 a1 _. H: t; a8 ]/ @6 F
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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 the1 {1 o. ^ F# `* {, m; x8 }
* GNU General Public License for more details.# [) ]5 J- s5 G1 b
*/
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#include <linux/module.h> m( e# I, S( Y k
#include <linux/init.h>+ Z, l |* E, n5 c* @: f7 H: s
#include <linux/errno.h>
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#include <linux/types.h>+ C3 P3 ]) d; R4 l
#include <linux/interrupt.h>
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#include <asm/io.h> O) x9 A* h& ^' ~
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>% ?. s { E! Y' y- h# N( g, B
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>* A5 ^! H1 z7 f+ t
#include <mach/hardware.h>
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#include <mach/irqs.h>' F& O9 g5 @4 [0 @
#include <asm/hardware/edma.h>( C/ s Z+ r+ a/ {# Y
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/' T9 v M( k7 p+ \8 P
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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__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)) G$ n' f" b" x e" b) ^
#else* i% A5 D1 s* T1 u4 o
#define DMA_PRINTK( x... ); _% B$ O8 h! |
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif- N) G9 H; @7 \7 ~$ V1 u
#define MAX_DMA_TRANSFER_IN_BYTES (32768): G' p& }$ N! d- l# R% y
#define STATIC_SHIFT 38 O! @+ F* H! R$ E _) G
#define TCINTEN_SHIFT 20: _* k/ E# P; [2 w
#define ITCINTEN_SHIFT 21( U: \3 h; T0 s
#define TCCHEN_SHIFT 225 i" q: a" T. s; w' J+ c; u
#define ITCCHEN_SHIFT 23* l. a4 p) C& s$ T
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static volatile int irqraised1 = 0;9 K2 L5 `7 \4 B$ T) e
static volatile int irqraised2 = 0;6 o1 b" |5 s! q0 \5 a! d) _. b
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: v5 U7 j9 t. y
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ R f* K7 X8 i1 E6 E% Z- G; B
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); E6 W+ }8 k7 U) K
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dma_addr_t dmaphyssrc1 = 0;8 M1 F9 z) k- p/ H' h l
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
dma_addr_t dmaphysdest2 = 0;8 N) {6 T) K+ q2 B% ]# ~$ i/ r
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char *dmabufsrc1 = NULL;- m; Y1 q4 ]& l) M) t
char *dmabufsrc2 = NULL;/ y$ V" d8 Q4 Y) X9 D! I! ~
char *dmabufdest1 = NULL;8 b5 Y$ F: N/ n6 E
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);) c E+ F) F7 F5 e: T
module_param(bcnt, int, S_IRUGO);: [! y1 W, n& A- S
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