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 @) {7 J4 W; B& y$ E% C+ }
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* This file contains EDMA3 Test code./ T7 `5 d' p; j6 z( \( l- F
*
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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/ B. v" E1 t$ U/ V
* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 t' p9 J$ U, X. w4 C" P; c c
*
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* This program is free software; you can redistribute it and/or
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* 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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* 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 the
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* GNU General Public License for more details.8 z1 O, }- ]/ ^
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#include <linux/module.h>0 U0 p+ L' \+ \% c, Q
#include <linux/init.h>9 r8 ?: ^' x+ H" o9 y) M2 z1 v
#include <linux/errno.h>
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#include <linux/types.h> T* R, j( v4 ]2 q, w+ D* ?
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>! P$ c: e8 w9 [5 h- t' \
#include <linux/mm.h>
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#include <linux/dma-mapping.h>$ `& d6 e" S) k9 _
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#include <mach/memory.h>, C9 N0 d; _# z# C9 t
#include <mach/hardware.h>6 ]5 Z- e4 O) t1 D* T
#include <mach/irqs.h>& Q) U4 j9 P' O: H3 j) m, [
#include <asm/hardware/edma.h>, _3 K3 ^ @6 f- f
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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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__)" q2 ^) w9 c9 D; J5 x% D& o
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else5 Z& t4 u; N4 e6 H5 \7 z4 `
#define DMA_PRINTK( x... )# q3 \5 A" v' X! y1 Y* Q
#define DMA_FN_IN0 _ U0 A* Z3 b3 N" N% N* {
#define DMA_FN_OUT1 T+ E! S8 ~+ A, v& |/ E
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3! T& t! b3 A0 s$ T( R+ V
#define TCINTEN_SHIFT 207 t# D1 N7 k2 x- N
#define ITCINTEN_SHIFT 210 G$ r3 J2 B4 y
#define TCCHEN_SHIFT 22) T; a F; \% ?4 i4 E7 i
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;6 E& i; e" T; R/ p/ Z% g, C
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);9 x: y8 J3 ^: p2 q' |, E
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 K% q2 \8 g8 O! p7 I' [
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dma_addr_t dmaphyssrc1 = 0;* }7 }6 f; J" F4 Q9 ~3 v& ]4 c, L
dma_addr_t dmaphyssrc2 = 0;9 i. _: b( B1 R- i6 j
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;7 L; X% E; I0 O1 f6 x$ b% |; |4 O
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;. B" {1 t! }0 w6 f
char *dmabufdest2 = NULL;+ q7 r4 Z1 w2 p
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static int acnt = 512;5 U+ l' q0 L' M. g9 D$ A2 E
static int bcnt = 8;* g% C. d+ w2 d8 @, v, B
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);6 i# h* m2 ]' }, j+ }" y8 P
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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