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& E; L$ o7 P9 }: @8 x( @; y9 B
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* edma_test.c9 Z& k% ^2 q% f) b# P+ Z
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* brief EDMA3 Test Application7 O" I7 E9 r+ o) B7 `% N4 O. o
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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 BE8 {) I& m) p* P R2 B" g! N; [
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/5 y* L5 d; M9 }( d5 M4 }
*
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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! s Z- c! t+ B& d' @/ y5 W0 \# P
* published by the Free Software Foundation version 2.1 @$ l! p1 a+ U. {/ y9 f; U4 E
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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
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>0 ]* ^) A, [& V( G# d0 B/ S
#include <linux/init.h>8 Y8 a2 A$ F! M& O* V3 a9 n
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>6 C( k& p/ P/ B! E# P
#include <linux/moduleparam.h>+ f/ B. i, N5 e$ P0 O
#include <linux/sysctl.h>; Z4 U, j& B( K+ t5 w
#include <linux/mm.h>
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#include <linux/dma-mapping.h>- U* L) a0 z4 J: F; Z: C5 Z |
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#include <mach/memory.h>$ A/ R, W1 e, H* z$ w0 }& L
#include <mach/hardware.h>% R, d/ y, D0 y2 E0 I z
#include <mach/irqs.h>9 r" x" |: X, U! P
#include <asm/hardware/edma.h>9 P1 N, f% \' l" | F3 u
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG! p$ `# X1 K4 g1 S( i/ [/ i
#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__)
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#else
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#define DMA_PRINTK( x... )6 `6 y2 \# w# e* L8 b% F5 l) y b9 }
#define DMA_FN_IN
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#define DMA_FN_OUT$ y5 R, Q' `4 J5 D& N# l
#endif/ k" P1 L/ y! F# h5 j% v
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3, x2 q8 U* L$ H% e- L" M
#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;8 I9 I6 x2 _( M- T' \3 N: Y/ U
static volatile int irqraised2 = 0;4 _* y% r1 g3 [) \" L: t
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 N$ L3 ]/ K2 j. e4 Z- J
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);1 X0 s% r2 Q# M
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dma_addr_t dmaphyssrc1 = 0;/ R3 D6 `+ S5 i0 U7 T5 ]& `
dma_addr_t dmaphyssrc2 = 0;
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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;+ R5 p% R# D. B( z
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;* I1 M- o7 Z1 l# ~
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;9 B. F2 w( g: j6 E- P0 G- t2 H
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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