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/ ^! E- H8 ~) P) {8 a
/*
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* edma_test.c
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*
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* brief EDMA3 Test Application+ j. }' L( }, x/ s
*
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* This file contains EDMA3 Test code.# ?; }8 w I O2 \1 h
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT" j/ w- d7 @% s( T1 A
* TO CHANGE.& R, _$ X. d3 J/ D% n; P
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/1 V0 e3 Q5 Q! M3 z! R X- G _
*
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* This program is free software; you can redistribute it and/or2 |8 y# D! k1 @7 f, b- k: s
* modify it under the terms of the GNU General Public License as
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* 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 any" O1 p! R- i& v
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the: s8 A& U; C5 d3 Z. E
* GNU General Public License for more details." E6 `7 k4 j6 Q
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#include <linux/module.h>: X& A/ Y; A3 \* T$ g) k6 ]
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>7 s7 d- Y/ ^ v% h# g' p* s1 R) X
#include <linux/interrupt.h>
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#include <asm/io.h>$ K2 c. C6 a9 e9 a7 b& ~0 t) L
#include <linux/moduleparam.h>/ ^* j8 p! [ q% |" {. t/ l
#include <linux/sysctl.h>, |3 I2 l1 a* f( }
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>9 Y" y+ a% @) V5 I
#include <mach/hardware.h>: T: C, n5 a0 C1 T8 Z9 E
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>8 K& Y2 {) Q/ P+ Z
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#undef EDMA3_DEBUG( v" C2 e1 C: | { J0 A
/*#define EDMA3_DEBUG*/$ ?9 d; J! w+ i# s( K
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#ifdef EDMA3_DEBUG( z$ q( X6 Y" x6 L5 s; g0 k7 T8 N
#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__)3 E: S- W) V0 @2 M" ^* k
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else8 S p4 a7 l, [6 S6 K, b
#define DMA_PRINTK( x... ), J2 R: c6 B( e; P$ k/ \8 }0 x' l
#define DMA_FN_IN! ]% P/ r0 z" W
#define DMA_FN_OUT# M6 Q, z z) C+ L0 K. d" v# P& J
#endif/ e5 B/ u; [" G- @
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 38 E0 e) Z1 G$ p
#define TCINTEN_SHIFT 20$ S- g* q, R- P; ^
#define ITCINTEN_SHIFT 21& |, F* ^6 Z# t5 X' \
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23- x/ r! k. Q; D$ I3 x' M2 t) Y2 h% }
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static volatile int irqraised1 = 0;- x; @# o: m2 I4 J C" O
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);
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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);! S2 P1 H: @9 \( E' ] k# t
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;9 ~' H, g% G) p
dma_addr_t dmaphysdest2 = 0;: ?; v0 N2 ]. Y* j) _* a
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;& o1 P( p% c. Z0 A/ V
char *dmabufdest1 = NULL;# A' d9 j X6 Y
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;# z P% W: m x5 @* ^8 ]: V3 A
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module_param(acnt, int, S_IRUGO);, @* e" d# U2 k+ k7 H2 a
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