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
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/*
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* edma_test.c6 `! j \0 ?; H# M7 B# Z
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.$ s# V( l$ s3 V0 i& b
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE; `+ T' N# S6 b4 _0 J+ V7 d$ f$ S
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT7 Q; M( ?5 y) l" `
* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/: e% N! k7 ^8 K9 Y
*
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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.& v4 r0 H2 C# y/ V( j
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty- b' m2 g1 g5 F( g$ B5 W
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 P7 x/ D: l S- f. n
* GNU General Public License for more details.6 C5 w) v* B" S( v5 x3 M$ }$ ` g! ]
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#include <linux/module.h>6 t2 ~. b+ y, t$ e
#include <linux/init.h>
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#include <linux/errno.h>6 G- a/ b3 r# V4 i6 `! x$ x
#include <linux/types.h>! z4 t8 |9 l e: s1 I" O. k& K: }, t$ m
#include <linux/interrupt.h>6 k/ C: U2 W' u! T3 \
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>$ W, A( \# {; A) N3 Q; i9 K/ E
#include <linux/mm.h>; \9 E" E; A4 ?, ]1 p' P2 E
#include <linux/dma-mapping.h>* g: F8 F2 ]6 @5 Q4 p! ^
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#include <mach/memory.h>7 W5 _3 C9 {% p! J) c- h* K3 s
#include <mach/hardware.h>: A6 I8 |; f- ~( d
#include <mach/irqs.h>0 [ i& R9 ^- u
#include <asm/hardware/edma.h>$ ?9 j/ h9 m; t5 i7 i
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#undef EDMA3_DEBUG% z3 e7 Z7 w+ Y7 m' j9 h7 N
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG- }+ X* k$ }3 v1 I9 k
#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__)5 `( p9 F6 L& O& S0 K0 z
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)7 P! g4 l% x) k3 ?- d. R* C( j
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN3 F3 A: t$ F/ {+ G" f
#define DMA_FN_OUT# @1 H' U$ C: ?! S- P- O3 A/ X$ _
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 38 E; {4 N' m; R! m W9 a& @5 E
#define TCINTEN_SHIFT 20- k. x' i: O6 ?' T _
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22% f( ]; g. m; v$ [5 ^, k9 f' b% Q; F
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;7 ]5 m) I( J% ]; o7 F# m* d
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 |9 e* X+ F; _3 O
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! K6 g A/ _" m
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- x: H+ b H3 T, u! {2 ]/ r0 y; l$ x4 ^
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;+ J2 w! S+ i' v$ J3 A5 B P
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;# S/ B6 N4 p& M
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;0 A* p7 u) J( _- k) j
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;! c& F: ~9 g2 X% f! J( Q/ E
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);7 o9 ?* V. y% q6 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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