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: f6 Z4 N1 Y6 r! A# p; w2 Z
/*
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* edma_test.c5 _8 x; b2 y F' P: s( ~- F' a
*
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* brief EDMA3 Test Application7 R, R5 V+ ~' _/ t
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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" q5 s' V1 t8 L$ L V4 V( _5 G* i
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT6 N- E( R K! G4 {( ]9 [0 U* F
* TO CHANGE.4 X6 ^" h$ g7 a5 D- C
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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 as
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* published by the Free Software Foundation version 2.& I% p' y' i' m3 k4 R
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any R7 q2 _% d5 s) F; ^$ H
* kind, whether express or implied; without even the implied warranty. N/ p) Z- J7 e4 _, }. m
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.7 a4 u/ v/ B- z5 z2 W4 u
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#include <linux/module.h>
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#include <linux/init.h>2 K8 t# y6 a* i- l# I& O7 F
#include <linux/errno.h>! c0 z. D7 d/ a/ v4 E7 T, D! K- }" p5 T
#include <linux/types.h># b0 k8 Y) ?9 e$ q1 Z
#include <linux/interrupt.h>
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#include <asm/io.h>% p8 ^/ ?( B) e8 w
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>% j6 @6 o! P9 M% t: X
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>" u. j: o+ U. E# ~9 ^
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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)6 Z! s% ?+ O6 \( t8 W# ?6 ~0 c- `8 b
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)6 ]) J; u% k& ^7 G( y7 {* R' @
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)0 P- g* K( l5 Y- ?' H# }' u+ @) u
#else/ v6 a/ E$ O( I6 Z% E5 U* I8 Q
#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
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)2 x6 ^4 f+ Q1 K: g0 d
#define STATIC_SHIFT 33 t9 g1 k; C* [+ A. y
#define TCINTEN_SHIFT 20! g3 ^# n. K! @' w1 g" C
#define ITCINTEN_SHIFT 21. s @. U% U; U9 ^; p. w
#define TCCHEN_SHIFT 220 x" w( g$ H; l2 b' q
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;4 O9 w4 m. p6 J; ?5 E4 S j! O
static volatile int irqraised2 = 0;) P' X1 u; G9 U* N& D
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, e6 b1 }- b/ V/ N! X: L, Q
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 K% j0 b- G0 k4 Z% |) u5 h
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 f) z/ v. y! ?" R9 l" n
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dma_addr_t dmaphyssrc1 = 0;1 n3 ~1 V- F Z; Q
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;2 y& P4 P& L" c$ v8 \
dma_addr_t dmaphysdest2 = 0;+ N) J0 E- e8 f O. e
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;! l* E/ a- u8 r9 V
char *dmabufdest1 = NULL;1 Q1 B' {2 V. `; t! S' w
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;+ \: }: ]4 q w9 k8 {
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);& c7 o: ? L `" X, N3 m1 E
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