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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/*. W1 f$ I: A- V$ K+ z8 Z. F% r
* edma_test.c! l6 @! M K8 g1 F. h& M+ M
*
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* 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( ^5 N; f/ H- a0 n
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.4 W: a0 F9 ~7 q0 C
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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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, Z' I4 s6 u8 V" e" u
* published by the Free Software Foundation version 2.! l9 Z5 X, `+ H: \
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any4 X z, F7 Y+ y9 N( b6 d8 i
* kind, whether express or implied; without even the implied warranty( } T' m+ t1 M2 k4 Y0 p
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the( K5 ]! j0 ]$ R( p: `
* GNU General Public License for more details.- t( _- J- \6 }) |/ b# W! z0 P' h2 s
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#include <linux/module.h>: e+ c/ j; y$ O- l( D" g, x8 u
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>! Z8 b6 W6 B- y9 b
#include <linux/interrupt.h>
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#include <asm/io.h>% K( e: h9 k' B% h& s. n8 Z1 K1 y
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>7 y$ U% L" K: e# }. i
#include <linux/mm.h>1 X) V3 H; D; d
#include <linux/dma-mapping.h>
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#include <mach/memory.h>9 V5 ], |- v$ s Q3 j; d
#include <mach/hardware.h>* n, Z/ L" Y# w, R- g: C3 ?$ W
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>/ }( ^9 {9 e/ l8 e9 S
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#undef EDMA3_DEBUG' F& A4 F- x$ b$ Q; y9 v# L! V
/*#define EDMA3_DEBUG*/, x2 o. z; g7 x) U$ U' x
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)0 T! f" ^2 B) L z5 b( K
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)/ A/ m* M( u+ q
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )' R) i- i; z% ^1 x) G, p
#define DMA_FN_IN
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#define DMA_FN_OUT- k3 _0 t/ G5 `# j4 l& l
#endif& f3 M/ G0 ?5 Z+ O8 K' c
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 36 R! t% a6 h' n1 F9 U
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 227 d1 S v% Q- Q" M( l* ^
#define ITCCHEN_SHIFT 235 S R: T9 ~% `2 q2 S
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static volatile int irqraised1 = 0;
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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);$ u# x2 d+ S0 C: L1 M6 M3 N
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);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;6 X/ R3 j* O$ ]' [1 b
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;6 E# e" `" M6 O9 i+ t
char *dmabufsrc2 = NULL; V7 d5 w# y& ^ M! [' o( C
char *dmabufdest1 = NULL;8 D0 E4 A$ j7 Z; W
char *dmabufdest2 = NULL;7 p9 B1 J) j6 R. @5 `: X+ d
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static int acnt = 512;
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static int bcnt = 8;6 Z$ k3 |2 k- P" ^& h2 I; h
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);% B8 P- ~ `. B
module_param(bcnt, int, S_IRUGO);5 r) E, V/ q- {4 X0 h+ I" m& H
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