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+ s! S) ?" f" k8 r- @% A. I5 p% ^3 ~
*
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* brief EDMA3 Test Application, |7 k6 `* @1 q7 t# u' C
*
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* This file contains EDMA3 Test code.! J: L: M- }" E4 f5 k: e) b e
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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 SUBJECT9 r: |* y* i4 c8 z. n+ Z! d
* TO CHANGE., x3 s' S: ^6 z* I9 o4 D1 c
*- X. e; h3 {; _- z
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or5 x7 ^# \/ N8 G; P' E& p
* modify it under the terms of the GNU General Public License as6 Z/ b" `# L3 ]; b5 [+ E! _; r0 M
* published by the Free Software Foundation version 2.
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** W0 T7 ]9 r6 H& _% V! S9 V
* 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 the7 H. |1 u7 i+ Z$ s% j
* GNU General Public License for more details.
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*/
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#include <linux/module.h>: U- j) s6 k0 v8 I" v# D
#include <linux/init.h>
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#include <linux/errno.h>; B2 R, _, T; E7 D1 ~
#include <linux/types.h>& l) l/ p& t8 D5 C. Z
#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>" q& l; {. W+ z' D. {9 i
#include <linux/mm.h>
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#include <linux/dma-mapping.h>3 c% y2 R5 Y0 }: |
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#include <mach/memory.h>' `7 m1 Q+ s; I! O" m
#include <mach/hardware.h>
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#include <mach/irqs.h>5 x- Z+ [6 |: E
#include <asm/hardware/edma.h>" F0 c- P4 F T$ O* `
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#undef EDMA3_DEBUG0 p1 k9 P2 ~6 J
/*#define EDMA3_DEBUG*/! [5 n# i# B. ^ h
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#ifdef EDMA3_DEBUG6 Z3 g: @+ t: h( f- r+ n
#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__)! k3 d# k0 Z* P+ Q' E* R9 \' s
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else$ G5 b/ @' F8 I: i
#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)
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#define STATIC_SHIFT 3; c$ e: N7 m, l8 S# d
#define TCINTEN_SHIFT 20( M- y* M7 R* u- k/ K
#define ITCINTEN_SHIFT 21! k/ o7 d2 z2 D; Y
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23+ v3 L: C. q2 X Z( V% X
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;- D' W" t2 z) @9 o& F3 J1 [" ]) P
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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); W5 T+ z' I1 r
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;: e' f1 I+ `# V2 E4 Y+ K' z
dma_addr_t dmaphyssrc2 = 0;) y0 Y5 Q/ V" k4 R/ l% [
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;( W" ~5 t1 t& F4 g; ^1 P
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char *dmabufsrc1 = NULL;& A# C+ S. Z0 y0 R9 s( D7 \$ v
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;; B8 ~: v/ t+ _8 x% C1 ?* R
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static int acnt = 512;
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static int bcnt = 8;/ b0 T- ]' a. A& u2 N' S6 \! ~
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);; z! W$ z; p' x3 U6 e5 `
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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动