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. Y: H6 I H8 j) M4 c7 E
/*
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* edma_test.c
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*
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* brief EDMA3 Test Application, d) I7 a2 k- T, i8 C* Q
*
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* This file contains EDMA3 Test code.% _' E4 @! u8 m8 N2 J; [9 T
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE! {8 U$ \. x1 @( ]
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT, p$ E% V7 o! Z/ E
* TO CHANGE.! b1 Q5 P) l! n
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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
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* modify it under the terms of the GNU General Public License as- l3 b3 r3 M/ ]
* published by the Free Software Foundation version 2.& p' I5 x, @/ Y1 `- V3 h. N" z
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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
* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>! z) A9 v. F. g- t G
#include <linux/errno.h>1 `* M, X: N4 ^9 ]( W: ^9 }
#include <linux/types.h>% b% r) w( k# ~2 [
#include <linux/interrupt.h>$ O/ A; m- F$ _# g$ ~ J
#include <asm/io.h>& u! n6 q) X+ ?# c0 T9 Y: I
#include <linux/moduleparam.h>' u" f4 J5 l$ @$ @( k
#include <linux/sysctl.h>
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#include <linux/mm.h>0 O& ^4 D; I, N
#include <linux/dma-mapping.h>
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#include <mach/memory.h>! a- S( O. m: q. H) ^* y c
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>+ k- F* G& q, H& Z0 F. O0 F5 F, U( G
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#undef EDMA3_DEBUG5 a9 m) s- h2 c7 t( } l
/*#define EDMA3_DEBUG*/6 B1 M' v7 g% \9 `( e
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#ifdef EDMA3_DEBUG' ?. k$ I a* r8 m/ X" 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__)9 C) t2 z0 ]% {
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768), ] L7 ]2 D) x" ^
#define STATIC_SHIFT 31 Z8 a$ k9 z8 y; @6 I$ h$ I' C
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22* s% T; `1 l a, O1 p) q3 B3 c5 p6 m
#define ITCCHEN_SHIFT 23( r0 B9 ~) A0 C, b3 b! \3 t$ L
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static volatile int irqraised1 = 0;; l) I7 ?$ O/ ?6 H% e& w
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);9 O* k% n# T# E
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;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;7 x' O/ {: v1 i6 w7 B. U/ |
char *dmabufsrc2 = NULL;- g# R( ^* R2 @! \( r: g/ a' y
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;& i. s/ c. D6 C* B* a
static int ccnt = 8;- j8 f) |% N3 T0 W
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module_param(acnt, int, S_IRUGO);9 J2 z K) |+ C# E$ f) p+ B3 F
module_param(bcnt, int, S_IRUGO);! Z( N$ ?9 ~; o1 L: t/ y
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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