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 application7 i B/ w9 B9 F5 M
/*
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* edma_test.c& f" Y5 x. s8 U0 R r' D0 }
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.+ N; V$ f# s% \
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE9 v% f) S( r( A' r% W& \
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT3 w0 \* \6 o/ r4 O0 c' f4 K
* TO CHANGE.6 x+ M* w N/ A5 O9 e9 U8 _: G
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/. Y7 b4 O; m8 C8 d% y6 s; D4 N
*
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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
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* published by the Free Software Foundation version 2.- ]2 ^- Q% k( m& c
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any2 w. b0 X# j3 R$ I3 b
* kind, whether express or implied; without even the implied warranty6 Q& S# ?: ^# X' g- b1 B4 Q
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, F& G0 s X; f/ y7 c6 h& v T
* GNU General Public License for more details.; ?+ {. g" j: M1 P4 W8 v' f
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#include <linux/module.h>! y+ W. o( N6 x& M9 ~/ t
#include <linux/init.h>
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#include <linux/errno.h>+ _+ V- O; h9 f. d) |6 J
#include <linux/types.h>; o& C0 y4 k* w# r! r0 b7 L
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>8 ~! i& H0 u: _' g8 r
#include <linux/sysctl.h> G* c d8 T; w' \* b
#include <linux/mm.h>- P) u# {" O: _& o; V
#include <linux/dma-mapping.h> Z) M5 q- O( \- x
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#include <mach/memory.h># O. G ^, T8 Z) N% g1 I( j
#include <mach/hardware.h>
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#include <mach/irqs.h>3 n; m. D) ~% ?: n6 i
#include <asm/hardware/edma.h>' ~- n$ x+ F: ~7 U6 u2 T
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#undef EDMA3_DEBUG9 d. ?6 w, q; o; W/ v
/*#define EDMA3_DEBUG*/0 x( c; U/ r$ Y8 M
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#ifdef EDMA3_DEBUG
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#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__)# a; ?) v2 e* N/ l4 Z C9 ]3 c
#else! a2 m( G9 z. g
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif* x& E: K% f" @0 u' G: q# D6 P# F
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)0 N$ u0 T- D3 r2 t) L6 h+ d1 V" [# p
#define STATIC_SHIFT 3$ Y _3 T6 P( a3 w2 `) X1 V4 v
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21, Y9 _: Z/ x8 n% y
#define TCCHEN_SHIFT 221 ?9 ]5 ~( ^8 H2 T8 v9 m* J
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;8 ]# I9 V: O2 n1 s1 M
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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);
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dma_addr_t dmaphyssrc1 = 0;8 {7 a9 a1 ~, a6 M1 o; Q1 I9 m
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;% N5 |2 Z1 @8 Y' I" K
dma_addr_t dmaphysdest2 = 0;* J7 Q$ I9 p# s3 O
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char *dmabufsrc1 = NULL;8 q& _8 f5 N4 x' z
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;) K' {. n3 D' R* c1 H, h8 e
static int bcnt = 8; G) W! y/ l. u: P! W! \
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);% J% u5 ~, l& U/ M+ h+ 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