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) E4 ]: \. Q! N+ o/ J8 \+ ^! _& Y5 y
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* edma_test.c& z r, h8 l# N: O1 l5 M5 y
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.5 \2 l9 j( @3 X
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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 SUBJECT
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* TO CHANGE.: t' I( x% f( u0 j8 C5 i3 e: R
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/: i" x, \, B! M' Q/ `7 @
*
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* This program is free software; you can redistribute it and/or t/ ~% m H/ D9 |# h+ \' 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.* z# T8 {: g! s
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any0 m1 ]" g g/ {" m( v4 u
* kind, whether express or implied; without even the implied warranty/ b- ]) }$ R$ ~5 F
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1 P* z) Y4 k+ g, w0 j
* GNU General Public License for more details.2 x% N; ~+ E' w" R/ `6 I
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#include <linux/module.h>
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#include <linux/init.h>9 R0 j' H9 z3 C5 V9 U
#include <linux/errno.h>
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#include <linux/types.h>1 E: L- k( n: ^/ b1 C" y9 D. ~
#include <linux/interrupt.h>; @" C2 T: z1 x& y% ^
#include <asm/io.h>3 U) B1 {9 w6 c, r3 s- s2 l3 ~4 j2 v
#include <linux/moduleparam.h>/ r" j. H0 Q1 A& W) F
#include <linux/sysctl.h>5 a$ a; s* O9 o# t; ^
#include <linux/mm.h>
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#include <linux/dma-mapping.h>; O6 k/ G& B; R% c
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#include <mach/memory.h>, D2 @( m) Q1 e- y6 ^
#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_DEBUG6 ~6 y. L8 c d' Q% `
/*#define EDMA3_DEBUG*/6 t# W4 V# |' O% P' m# C
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#ifdef EDMA3_DEBUG6 W- _1 v8 a/ g5 t3 P& J
#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__)% @, d; u- A7 L8 Y; H
#else
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#define DMA_PRINTK( x... )2 j* F- k p0 k6 S" Q4 B
#define DMA_FN_IN6 z# e( J. u. l) Z
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3# f0 n/ {- d; F! M( U8 n
#define TCINTEN_SHIFT 20! p8 [4 B$ L& q/ g( J/ I. K8 U
#define ITCINTEN_SHIFT 21( m* `% p) N1 T; _& `
#define TCCHEN_SHIFT 22; g V- q+ q, W1 p/ b
#define ITCCHEN_SHIFT 23# e9 e2 K5 i' m/ f/ }4 X s
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static volatile int irqraised1 = 0;, g% Y: p( J4 }: s; k
static volatile int irqraised2 = 0;
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# v" }" j! g8 e/ l( D7 N
int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* S2 ]0 l. y; h( J
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 {9 {4 D+ x) Z: W
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;" V# G1 S( @4 K- c/ }1 }
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;: a/ O4 T, y: P7 ]& S, `$ _5 N6 D
dma_addr_t dmaphysdest2 = 0;7 Z4 w. D! w1 _1 h. W# m7 d
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char *dmabufsrc1 = NULL;" j a' {" e: Z0 U& {% h
char *dmabufsrc2 = NULL;! D2 `' A. m8 K) x
char *dmabufdest1 = NULL;- y7 x. Y2 V3 K7 ^3 q- ~7 j
char *dmabufdest2 = NULL;$ _: ?8 ]: t2 ^; W
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static int acnt = 512;
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static int bcnt = 8;3 r2 e0 H8 }& a* j, Z2 B1 H
static int ccnt = 8;3 B$ E2 ~0 i( b# ?; m- x' l b
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module_param(acnt, int, S_IRUGO);5 P1 C% S- E$ U8 a. n3 P' G
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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动