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 J8 t$ V4 x# z% g
/*# X7 x' W/ G5 U- B* [
* edma_test.c
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*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.5 U% j' A( d1 z* k/ T7 w2 W5 k
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE" K3 w. Y3 N; M' J! Z9 W. L
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT7 F! W+ Z6 g8 Q+ A6 |) ^/ Y& j: v
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/! B0 N: \1 Y. j/ M1 n: G: \
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* This program is free software; you can redistribute it and/or- z5 H4 |. Z7 e9 O, j; H1 p& j! {
* modify it under the terms of the GNU General Public License as Z& V6 w4 ~; }9 b
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any8 a- B! m/ X- I3 `) v
* kind, whether express or implied; without even the implied warranty1 t, |- J, K' A
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details., {* c& N+ ~4 c0 d5 I# r1 U
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>- p3 B* z; _) h% w2 @+ B
#include <linux/types.h>. v& `6 D. f* l' ]: K- H0 p" m9 Z
#include <linux/interrupt.h>) [4 g/ v$ @) k& l1 g( f
#include <asm/io.h>' h7 ~) v( ~4 \
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>1 U/ `4 {) K0 i: s6 L! f$ C* {+ f
#include <linux/dma-mapping.h>1 W) k8 t% {) Y6 i
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#include <mach/memory.h>6 ~7 d8 R4 E# t
#include <mach/hardware.h>5 T! I8 f g) e) _' X2 q
#include <mach/irqs.h>5 f' d6 H B' _) H2 F3 ~
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG6 m0 B' s2 a9 ~: I
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG4 a2 i3 I+ G9 y L: V& H% d( a
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)/ T% u$ _& e5 y' r' B
#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__)9 ^" U+ p, \' |: y: B
#else
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#define DMA_PRINTK( x... )% s D( F5 d3 }( O- X
#define DMA_FN_IN
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#define DMA_FN_OUT$ {4 R! {0 r0 l B( y
#endif
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# D6 [9 u# `& L
#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21- V1 n& t3 N6 G% D. N, s
#define TCCHEN_SHIFT 22- u8 n }0 b" L
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;- H! H! @ V. p) }9 y
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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);) p* p/ [8 g a& R1 |- A# {
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dma_addr_t dmaphyssrc1 = 0;" V c% D; s& z q! s5 d
dma_addr_t dmaphyssrc2 = 0;' _" L. C% U6 E, J( p* O1 x
dma_addr_t dmaphysdest1 = 0;3 I7 `1 J% W8 ~' g
dma_addr_t dmaphysdest2 = 0;# J# z( [1 L. k7 m
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;' `) ^3 m7 ?: r) ~
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;# N5 X8 z4 `6 R! O8 U2 N; `
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;, U. ?. Z$ T" w! t9 Y8 M+ O1 E
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module_param(acnt, int, S_IRUGO);6 ^3 D5 Z) I- T$ ?
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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