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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/** G2 M$ A1 g& ~
* edma_test.c
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*, B1 l& ?/ G+ B- v" F9 o
* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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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 SUBJECT6 ]2 Q2 `. `7 ]' @" j4 H
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/( u4 B, w6 Y" v1 Z
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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" N1 j' e- v9 Z* M$ o3 Z
* 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& S3 [, H5 h @ ^, @5 o+ P+ O
* GNU General Public License for more details. z- k' k: O) V4 i' f8 r; d9 B
*/
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#include <linux/module.h>& J, K8 p3 }: a0 e/ q$ Z* |) e
#include <linux/init.h>+ _1 R7 ]: R$ G, A- E
#include <linux/errno.h>) Y% D6 |+ g6 _6 L
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>4 _; b- S$ a w9 W+ A2 ]
#include <linux/moduleparam.h>
#include <linux/sysctl.h>% O) ~- Z- @$ ~; C& V
#include <linux/mm.h>$ Z5 `' G J# N0 m. ^& z/ g( p& [1 v
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>/ ~/ `8 r* P: p& N* i5 t
#include <asm/hardware/edma.h>9 A7 P4 q4 X4 G# J% e3 t' O# f, H
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#undef EDMA3_DEBUG. B* M. j: [& S1 ?; ~& B0 f& Q! N
/*#define EDMA3_DEBUG*/3 Z- }. B8 l; i
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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__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)2 I% E6 G. Z; E# O% f2 o. a8 ]
#else
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#define DMA_PRINTK( x... )$ s8 u; b' h" x1 N" B
#define DMA_FN_IN- K& F0 v! t% {' C( k: U) d
#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
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;% ?" _4 q" y. i; J; I
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);! `* U1 c. F: ]. N- I) p4 B8 F8 |/ T, F
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);; _) b0 N5 y3 V, A
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 `; U* |6 @$ B; F
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dma_addr_t dmaphyssrc1 = 0;( s3 b1 y) ]0 W/ w4 {
dma_addr_t dmaphyssrc2 = 0;: Y: C# K: X. `! A
dma_addr_t dmaphysdest1 = 0;% w5 \9 h( s/ @0 ~- d' _/ A
dma_addr_t dmaphysdest2 = 0;* n$ _2 w2 h% p0 D+ w
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;; P+ `; _* O4 n
char *dmabufdest2 = NULL;
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static int acnt = 512;3 D) m% c0 Z$ R& m, a4 f9 f; F
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);+ W6 D: f. |' J; [, q
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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