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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** {0 k) Q% K* q% f
* brief EDMA3 Test Application l" A/ ?' V" Y$ w
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* This file contains EDMA3 Test code.4 E6 J7 b, R3 D% F9 b
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE Z( t6 H5 S: r. x( H1 a
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT1 B& V% a% ? C# }4 l/ |6 t2 O
* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/; u, a) K: J' h! n
*
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* This program is free software; you can redistribute it and/or0 g7 Z3 K# P+ ?+ j, \
* modify it under the terms of the GNU General Public License as* ^0 G* i" m7 M
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any I- l( t0 z1 |# W
* 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.2 S- z" e {4 O+ @
*/
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#include <linux/module.h>0 i2 {2 ~1 W# ?" i- }
#include <linux/init.h>. p; [+ u0 V8 H$ f$ i% t$ J8 g
#include <linux/errno.h>9 n& k2 \; T! E5 w9 W
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>5 Y% W" H* v2 y8 `" m! ]9 {
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>4 w& g- H4 Q' r6 b
#include <linux/dma-mapping.h>
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#include <mach/memory.h>$ o. h5 ?% n8 `# d
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>) `& h) Z+ \6 S S4 W
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/+ s7 {3 s: d# l) d
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#ifdef EDMA3_DEBUG6 T; H! V9 ]; v! ~
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)0 ?; L+ r% W' U( j" F; w, a7 q
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)6 f" w* |& E! h F5 I3 ~7 ?. m
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)7 h4 K, W: z. F% l" r8 X& e
#else6 R$ ^+ X& A# V8 k
#define DMA_PRINTK( x... )
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#define DMA_FN_IN8 C4 x; h1 L2 C$ T% ^2 k" |, i0 w6 B
#define DMA_FN_OUT2 k+ V6 D* b3 G* Z; Y
#endif: u$ u% E C5 p% M9 J' ^9 Y2 ^
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 36 \, C# S" f/ s, z) j
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21: O9 f. C: x9 l& H* t+ c) J
#define TCCHEN_SHIFT 22# h9 d9 o# G9 r e. ?. W. z
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;7 L* M1 v" W: m. }6 a& Z
static volatile int irqraised2 = 0; p' j+ }/ @2 g
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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);5 z/ F/ N4 X- e P5 q
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;# }+ K u- K5 l" `2 k
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;" C4 B9 s8 K( L, g1 W$ c6 G
char *dmabufdest2 = NULL;. o: t O, h- U4 m% ^
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static int acnt = 512;; e$ }; I4 {, ^2 X$ I5 p5 X7 G! Z
static int bcnt = 8;% s5 M) N( c/ T' w' o
static int ccnt = 8;4 E6 ~) |7 E! G' M1 d" V
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);# _6 h& t. ?6 @$ Q
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