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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/*. j* K$ t/ Z: f4 g$ g; J& K5 q' l
* edma_test.c
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*! e9 n2 o; ]! o& |9 k
* brief EDMA3 Test Application7 D X# I, U: u. `4 j
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE Y7 z0 `* a/ D$ v" b i: p
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.3 y* J2 J+ k5 T% d o
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/! o8 s( X# |3 e; Y: i
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* This program is free software; you can redistribute it and/or1 }3 ^8 i6 N# W/ W6 V6 K0 _
* modify it under the terms of the GNU General Public License as w# r' @# X, w6 T7 |0 Q
* published by the Free Software Foundation version 2.
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*$ T) g2 K& R5 c6 Q4 W: s2 x0 F
* 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" b2 q& r8 H* f
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the6 q {; A7 j5 o$ w6 o1 ^5 U
* GNU General Public License for more details.( h$ t! k) ]( q# l* i9 ?2 _
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>0 N2 ?, z9 U3 T% u5 d
#include <asm/io.h>4 w6 G( ]6 s: \
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>2 U# u# g2 ^" R" N3 c, b+ n
#include <linux/dma-mapping.h>) f+ Z3 @3 M0 J) b* ]
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#include <mach/memory.h>& }7 u. N+ N$ o' q9 m1 x( T/ r
#include <mach/hardware.h>6 X9 J! D8 m! q0 |: D& g
#include <mach/irqs.h>. I K J& G, g) H2 {
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG2 Y& H2 @1 s0 Y
/*#define EDMA3_DEBUG*/0 N7 U1 G- d! `2 j- P' i+ W
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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__)! X6 [: f4 p1 i E$ _' h# ?2 a! t
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)0 V( h1 q. l* a
#else8 a9 `3 p6 t" ^) {- m( c
#define DMA_PRINTK( x... )+ v- l; {/ @( O& R' v G1 h
#define DMA_FN_IN
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#define DMA_FN_OUT- P+ K$ e5 P& `; J1 ]" z( R
#endif, h' G% E, |- n4 o6 `9 V
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)9 w! U( C( |- O* A3 c1 |' @
#define STATIC_SHIFT 35 g/ `: d2 h* @0 I
#define TCINTEN_SHIFT 20+ \# T5 W# @9 ^; L
#define ITCINTEN_SHIFT 21% o0 A$ S, y: Y) n1 `" A! S# E
#define TCCHEN_SHIFT 22* S" |- L+ ~$ o9 h" S/ N
#define ITCCHEN_SHIFT 23# K2 J. P, G' _& R# v2 b# h( \
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;) ?$ e# \ b, j0 |% n' v! C( `
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, t% H1 R' x8 M* \/ I# E7 l8 W+ f% P8 Y
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);' J H, r0 G1 ]6 {. h) ^* B
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dma_addr_t dmaphyssrc1 = 0;& k$ V, j- [2 b2 x7 |4 U
dma_addr_t dmaphyssrc2 = 0;6 S$ o1 L6 m; W7 j8 ~$ o" Y
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;* v8 m! K. v" |9 M1 C. ]0 `; ]
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;; b4 r+ N; S- A7 }6 a% K5 o+ G
static int bcnt = 8;
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static int ccnt = 8;% h8 n/ D: S0 k
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module_param(acnt, int, S_IRUGO);( f& i% O3 ?9 x6 W1 w& W- g/ H& [, V
module_param(bcnt, int, S_IRUGO);) w0 l9 H/ p c% y; U+ F5 [
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