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 application9 t4 x5 Q; p3 p3 f) N) E
/* a* o& T( m7 l) k
* edma_test.c! `% \$ I+ G; W2 M" v! H
** A4 N2 B7 l$ P1 B- C K3 F
* brief EDMA3 Test Application; Z" W( f7 _$ d. Y% Q0 t
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* This file contains EDMA3 Test code." z H; r" H: c/ [
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE) _$ q* Y7 ^0 ^8 _) ]4 e5 `" u
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT' c' m. T* ?1 m# ~7 v2 L+ u. `
* TO CHANGE.8 E- s: k* c8 H
*/ w" y0 Y. Z3 k! f) \5 J
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/' v/ W1 H* t; \2 F: ^3 |8 {. a/ L
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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.( L1 j, `+ G/ h7 i$ I
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any, a4 |- ]: }$ r" f$ @7 U
* 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.* D1 ^5 U# {) X4 l8 ^0 W) }
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#include <linux/module.h>8 W2 z$ v# u' ]- }* O# Y. z2 d! v
#include <linux/init.h>
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#include <linux/errno.h>' A) ?1 ^- T- Y+ t, S/ j& \# N
#include <linux/types.h>
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#include <linux/interrupt.h>1 k% ?& [' V/ K
#include <asm/io.h>
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#include <linux/moduleparam.h>2 e& L/ d: g" \, n0 g' A- \: y7 |
#include <linux/sysctl.h>+ J F. m `# P" H% N) c
#include <linux/mm.h>; u) U6 @! T0 @) _2 m
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>- x4 Y) N* \* X% L# w
#include <asm/hardware/edma.h>5 y- o9 i4 d2 l( Y
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#undef EDMA3_DEBUG' J9 q* L; l# m J z
/*#define EDMA3_DEBUG*/: E! f( i; X! A8 M1 \
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#ifdef EDMA3_DEBUG5 z) `2 `5 _3 {+ K! Q$ A
#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__)- S X- Y) J0 N' k, `
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else' V/ Q, m4 T2 L
#define DMA_PRINTK( x... )% s& A) `$ u# N3 v' V
#define DMA_FN_IN+ w! Q2 N+ y+ _" x+ i& m5 i2 ]& W |
#define DMA_FN_OUT6 C! ]& n3 M1 v" [+ d; i, n
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3! D- F5 M. ?& q1 [! O
#define TCINTEN_SHIFT 20, E( g. [8 s. o1 |5 }% i
#define ITCINTEN_SHIFT 21( I+ g' {: P/ @# p8 y
#define TCCHEN_SHIFT 223 X# \# i' R( `% l
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;/ x: ^' |0 V4 X8 }: b2 P7 m' M4 Z
static volatile int irqraised2 = 0;! Q. }$ {4 ?. i# [0 g3 X* ~
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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); z- P8 O, l/ w( p9 r0 I- _
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;9 O* O8 J9 p C/ L
dma_addr_t dmaphysdest1 = 0;; E8 j" ^9 [2 N6 l0 i% e, a- ]
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;. ]/ ~8 _5 s* s( s/ G
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);7 T: r+ z0 H. V/ B; m$ ~
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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