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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/*
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* edma_test.c
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*
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* brief EDMA3 Test Application. g2 Q! B7 H, a+ C- R
*
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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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT0 ?) e c$ ]* I
* TO CHANGE.+ B$ J5 [; a B
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or( r& o* h' K) T, `
* modify it under the terms of the GNU General Public License as. S! R+ H0 e* p9 M, Y/ s
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any% N3 u8 J" D% X2 q+ ?5 e3 j' m7 w
* kind, whether express or implied; without even the implied warranty7 O) l, j. ?: z! s4 Y8 O
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.& g$ }. P1 T) q' F/ U( H
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#include <linux/module.h>' @7 M s7 f0 L# y
#include <linux/init.h>
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#include <linux/errno.h>. N) i1 h2 g! U6 A4 I
#include <linux/types.h>' K4 H/ U2 a. l( D! x
#include <linux/interrupt.h>
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#include <asm/io.h>' y9 U6 E; E# @/ N( c
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>2 v0 D: T6 r8 I7 d! G
#include <linux/mm.h>) F' Q' R3 y. I9 _ p* j
#include <linux/dma-mapping.h>6 e% V# ?8 x% U$ w; h
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#include <mach/memory.h>
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#include <mach/hardware.h>5 {# L& Z O$ A6 N) ^8 A
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>3 \) N/ A) z4 R5 z/ f
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#undef EDMA3_DEBUG% s) `1 ^- p- v" F6 g; g
/*#define EDMA3_DEBUG*/4 s. D" K: L$ D6 T' R
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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__)8 `3 ~/ o9 C; w2 X* w. H
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__): d' O2 C' l, v' I o
#else" p( A2 g( Q/ n% @ c6 A7 u6 n# f! m
#define DMA_PRINTK( x... )
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#define DMA_FN_IN5 t7 O: O/ [, P, r, ?* S/ j: z+ j
#define DMA_FN_OUT/ x- k) K" t7 Y2 i
#endif5 v. E% E8 @# {% T
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)$ r! Z% |* k$ A; R. Z2 X2 N; z
#define STATIC_SHIFT 3, X; x4 J( j4 n7 v
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21& ~( g* P6 z5 v) g2 H- Y( V
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23/ H' {7 g. {' S1 L
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;- R4 n3 ^: r2 h0 `
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 ^; X: q+ c8 g) @, O# ^6 |
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 T/ H$ S# o; A! @& |
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& R6 Q2 n( a# t' b" a$ e
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dma_addr_t dmaphyssrc1 = 0;, P4 ?1 |' b& g# m7 T3 t
dma_addr_t dmaphyssrc2 = 0;5 w, o+ B4 _! A s+ W I7 L7 x
dma_addr_t dmaphysdest1 = 0; b' n5 Z" T. t; X$ C& j- \
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;9 n9 v5 F6 b9 l" i6 H2 f5 E
char *dmabufsrc2 = NULL;/ i3 k) H3 R7 r$ R
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;! U" I- e# h; G/ s5 P! O
static int ccnt = 8;9 H2 A& P# {6 ~! C! M
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);5 n3 T) ^% `4 y% z* P
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