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 application8 k( e! ~! i* ^, `( d+ S3 I9 f. `' g# E
/*
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* edma_test.c
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* brief EDMA3 Test Application* p- x9 T0 }; I9 c
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* This file contains EDMA3 Test code.# j( j6 j. v: q% c6 B( C; e
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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
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* TO CHANGE.1 J. ^# I. d- K; R# z; _- P
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/0 D- n# r2 y! P6 i/ w) u5 G
*
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* This program is free software; you can redistribute it and/or& x- F; [9 A/ m( z9 E }
* modify it under the terms of the GNU General Public License as1 a; o1 k0 E1 {0 v
* published by the Free Software Foundation version 2.( R2 }& I. F T7 I& c+ u
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any5 e2 ^/ t4 b. E& D8 o$ N4 P# G' d
* kind, whether express or implied; without even the implied warranty1 `5 b- s9 o$ `7 ^" D
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ~0 H; K; m% O0 T7 S& R# X7 {+ i% }
* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>1 k; p# P- o. m
#include <linux/moduleparam.h>& B% z8 p p g
#include <linux/sysctl.h>* w g5 y, R9 v7 k, \: L$ g
#include <linux/mm.h>
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#include <linux/dma-mapping.h>5 v- J x, P( j% v- D1 j3 p9 {
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#include <mach/memory.h>
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#include <mach/hardware.h>. N4 s' G. H) n; c
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG3 O. B4 o! O9 \: T' p! c f3 X
/*#define EDMA3_DEBUG*/& U' k2 M. v3 M5 q0 f }
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#ifdef EDMA3_DEBUG: I. k# R- ^ n+ i& `
#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__)
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#else
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#define DMA_PRINTK( x... )- ^+ k4 h. F4 ?2 _. u
#define DMA_FN_IN( E) V0 e1 g* D& z
#define DMA_FN_OUT1 m9 M0 X5 N; {/ s0 a
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 36 m) s8 X" z7 Y' n: |4 M8 r
#define TCINTEN_SHIFT 20! W% t3 j0 q( f# E4 ^# b# @' k! I
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22. C* S/ |% R7 X
#define ITCCHEN_SHIFT 23- R0 t: m1 c1 A# i$ X
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static volatile int irqraised1 = 0;
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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);
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dma_addr_t dmaphyssrc1 = 0;$ K/ o4 F- n1 N/ B4 v
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;% z5 X0 G4 O7 [6 h: C& }+ ?1 p
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;& r" Z; k6 z) x% a6 L _6 o6 b
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;& T0 @) q# ^, i* M: Z4 j
static int ccnt = 8;- K3 z/ c* f$ r& J) r, B$ O$ @
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);% k2 m" ^- }' B4 i7 u
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