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 application0 `% A7 I. H5 K6 k" A9 r Y: O
/* O, {% _# J; T! `" u, V/ L/ _
* edma_test.c
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*
* brief EDMA3 Test Application& p. c, g4 W! N$ C- r
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* This file contains EDMA3 Test code." N* \, @; f$ O1 z7 A/ f$ w
*
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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 SUBJECT. J$ X) R# v) ~" g/ I6 `3 \
* TO CHANGE.& V. R" A( R& e& y" Z! o+ T
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* 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/or
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* modify it under the terms of the GNU General Public License as7 T: D; H- W7 f, L# i
* published by the Free Software Foundation version 2.% ~4 e/ l8 V2 l. k
*
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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, J6 [/ P3 x& I1 R% D' S9 }
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.6 f0 B9 M+ r, v2 C$ A3 i3 ~' S3 M3 F
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#include <linux/module.h>
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#include <linux/init.h>8 F* ~8 y$ q$ o! T1 ?2 h
#include <linux/errno.h>
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#include <linux/types.h>: s \& e& A( `6 X
#include <linux/interrupt.h>
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#include <asm/io.h>, E9 {/ a, A! _5 z+ r+ }1 q
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>; u: k1 e; \, @, i8 ]
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>7 x. n A* Q g# c/ ]" s
#include <mach/hardware.h>' W. i5 X* \; R" {; |$ G0 H
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG8 |) V: J7 q) |' O* S
/*#define EDMA3_DEBUG*/2 Y" w' A, }" |% B( V
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#ifdef EDMA3_DEBUG* M0 e3 C, F4 i. M" [
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)) `4 J; H& v- G1 ]1 `5 i
#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__)" L6 i& d0 ?. S* i& u L: u
#else
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#define DMA_PRINTK( x... ). ?: X: r4 B1 ~3 X5 e( ~
#define DMA_FN_IN+ I$ q6 d1 U, \ W( n! p
#define DMA_FN_OUT/ J+ O1 E# U/ b9 L% V0 R9 k
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 36 O8 ] [. F$ P6 C. s# ~' Y! R
#define TCINTEN_SHIFT 208 U. z9 Y7 M7 N1 X' k$ c/ y3 b
#define ITCINTEN_SHIFT 218 f2 \3 M8 O/ W- K2 e5 w
#define TCCHEN_SHIFT 22$ [2 _/ X/ @, V7 {
#define ITCCHEN_SHIFT 233 T; i+ p! [" \$ g1 x; K$ Q
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;7 ^& I6 ]! N p5 P& U) Q- g* Q
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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);. S K' [/ ?% y4 [1 F# x
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ j+ k; x) x4 }' O k$ w
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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;% m0 v0 }; O$ L8 G' ]0 i. p
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char *dmabufsrc1 = NULL; f4 O: W( D: I$ _8 K
char *dmabufsrc2 = NULL;0 p) M* M0 R7 |, J
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;1 n. Q2 E3 [. S% F% r# t
static int ccnt = 8;
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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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[未解决] OMAPL138如何在Linux下使用EDMA3驱动