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% J9 s1 O5 q1 _4 O
/*
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* edma_test.c
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*
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* brief EDMA3 Test Application* T8 f' a3 y4 V8 @
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* This file contains EDMA3 Test code.1 o8 K4 n" Q: S/ u, ^, i& b# g l
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE+ v O- R" B1 p0 r
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.3 Q0 g2 o/ I* @$ o
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/" K9 J2 x. }( ]3 \. W) Z
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* This program is free software; you can redistribute it and/or+ g" ]1 a$ n) ]+ d( b& _
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.2 P3 L- ^5 c& W( W0 s0 ~2 }
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any3 L# n# c6 o% v
* kind, whether express or implied; without even the implied warranty9 T2 P1 T3 a: S2 C
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details. s. o! K& M- d; C: k4 ~5 T5 l# M
*/ a9 t& ]5 A8 R, v8 A* d
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#include <linux/module.h>
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#include <linux/init.h>0 J' a0 S! z3 [% K; ~2 T
#include <linux/errno.h>$ j$ n) k! u) O1 K7 T4 z4 P) n+ A
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>- L; U7 V ~* M3 ^" b, o. K
#include <linux/moduleparam.h>
#include <linux/sysctl.h>
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#include <linux/mm.h>' V$ q; Y7 T/ B6 j( D6 D
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>/ V" K) ~$ Y- g, R) a& B) [6 q) F$ ?
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG$ M1 |5 _ b% Q
/*#define EDMA3_DEBUG*/# \ j6 N' U$ Y1 h- r0 Z
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)1 o/ {4 S+ }0 y0 @( i
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)4 G8 g4 L; e6 b4 t! u
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else9 n& M# j4 U" i+ H4 U. U0 j
#define DMA_PRINTK( x... )
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#define DMA_FN_IN: D# k4 S- s2 T0 I) Z/ B# J+ }
#define DMA_FN_OUT; H' ~+ e. ^# k
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 202 J7 q5 O' m( Y9 M; T' ~
#define ITCINTEN_SHIFT 21$ R5 K2 r* o. v. J& @: L
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;: D. t- n7 |% y; W- ]5 p
static volatile int irqraised2 = 0;8 P' _: X6 B' y& N) `* A
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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);
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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;1 _ x5 \1 [! j6 p' H
dma_addr_t dmaphyssrc2 = 0;7 V; s. a. a, y
dma_addr_t dmaphysdest1 = 0;) a V- e% J. @) A2 F
dma_addr_t dmaphysdest2 = 0;8 U$ o* m7 n9 I6 a7 }* z
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char *dmabufsrc1 = NULL;; _3 u8 ]" H! Q9 r: n$ j7 |3 D! J
char *dmabufsrc2 = NULL;6 w% F$ b; _2 Y+ r0 a, w$ P; j, I
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;2 Q! `0 Z# V" V8 m$ J
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static int acnt = 512;: h5 j- ~7 T B
static int bcnt = 8;) c* ^2 v" M) o O; M- S
static int ccnt = 8; w4 X. | _( Q) Z! M9 @
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module_param(acnt, int, S_IRUGO);
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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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