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* U+ K% n4 k$ W: r4 }1 V2 U
/*/ J2 j2 F4 M7 ]. r- M
* edma_test.c2 w6 v r- T" L- [+ ]# ^
*
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* brief EDMA3 Test Application5 \2 l7 A" B0 O% }
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* This file contains EDMA3 Test code.) |" y9 j; O$ N+ A
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE6 @2 i: ?$ D3 z# e5 R' ?
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT1 V9 O, l4 _3 l; f4 w! X
* TO CHANGE.: s4 }; G. s$ z: D2 m
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/" h0 v( }: e: n& A$ p& M5 t3 ]
*
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* This program is free software; you can redistribute it and/or6 v0 t, A$ X! q2 d: [; x3 p9 W
* modify it under the terms of the GNU General Public License as4 D& W8 W& f0 o/ G9 h
* published by the Free Software Foundation version 2.
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*2 X1 I! P6 R! I% p3 y6 L
* This program is distributed "as is" WITHOUT ANY WARRANTY of any3 ^5 v) f, e7 E4 u8 d
* kind, whether express or implied; without even the implied warranty& T; |* R9 I8 r! f( Z
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.9 }9 x) }: r# ^
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#include <linux/module.h>
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#include <linux/init.h>+ c& b, r R k# p R# o
#include <linux/errno.h>9 i' a" t" d" V+ V. K8 J7 c
#include <linux/types.h>) x* x$ f1 x2 ^6 t! A# r
#include <linux/interrupt.h>, d3 I# z- a, e! P( u
#include <asm/io.h>
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#include <linux/moduleparam.h>4 J5 Z2 {: [ Q6 W) `) _6 q
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>! V7 T( _. k. x( R4 _$ i: u6 c. \
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#include <mach/memory.h>; L# H& }4 n# K2 {- f/ @- d
#include <mach/hardware.h>7 u8 {( h" W( D: @& ^
#include <mach/irqs.h>7 Z$ W. a+ B1 M4 T0 q
#include <asm/hardware/edma.h>+ _+ L3 m) t% ?% a U
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)7 i& q' \/ u9 `
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)8 r" U; K6 q, [
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else1 C) F% q! B9 Y, N
#define DMA_PRINTK( x... )7 Y# h! Y+ u$ X( i# V. p: O/ k
#define DMA_FN_IN# B+ g3 ?% S( R0 ^7 q
#define DMA_FN_OUT
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#endif
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# }$ A9 J. D1 h' d M" z6 E8 E5 j
#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;
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static volatile int irqraised2 = 0;9 A/ W% f3 m8 A. v( o
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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);: |+ `) |* L* u9 U5 ^ j
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 z R1 P" Y; ?3 [- U% f
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;2 b: b' C. I$ L9 Q1 P" @, K: U- H
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;% Z9 `( \, T& I# g( q4 B
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char *dmabufsrc1 = NULL;& A: e! @4 h# c- B
char *dmabufsrc2 = NULL;7 b6 Q2 i* a3 N! d) p4 `0 S! J4 l$ v, X
char *dmabufdest1 = NULL;* ?) X+ F2 {( Q. H, ?7 n+ I% k# Z
char *dmabufdest2 = NULL;
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static int acnt = 512;& a6 r; ~/ f0 |# L' R" y
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);7 Q l N% s7 p- v6 C4 u
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