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% K2 ?' r8 g6 N8 t, S
/*$ n0 _ r) L# j0 x$ b8 W$ r
* 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.- Y) ^* W; z/ I, C9 h* R- r) u% `! V6 x
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE5 X2 b9 y2 m3 u, K) f5 ~( r& x( f
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT9 B u- P V+ ~4 M
* TO CHANGE.3 v& o% I3 E' O5 T- v4 {+ [0 b' o
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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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 as8 U; P8 a) d) s( y) g8 B
* published by the Free Software Foundation version 2.
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*/ N7 M, P- S$ g ]) }& S! Q' v/ k
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty9 F v* Y5 P4 u' x8 o7 i, O. I
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.+ T" ^) U6 S$ W" b* F5 ]/ N
*/
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#include <linux/module.h>
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#include <linux/init.h>9 G# _3 P0 w1 h3 w
#include <linux/errno.h>* i8 h+ @2 B" J( L: F2 d' _, |
#include <linux/types.h>
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#include <linux/interrupt.h>5 k4 }% |& e0 E* p4 F1 v
#include <asm/io.h>* x/ u& q9 C k8 h- f$ A
#include <linux/moduleparam.h>+ D$ p! }6 @* e; z- A( p
#include <linux/sysctl.h>
#include <linux/mm.h>$ ], A6 R C/ f- d3 H. X* K
#include <linux/dma-mapping.h># \* K% h9 K$ E/ `2 ^& T& ?* `* @
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#include <mach/memory.h>4 n, H! V2 P5 [, P# L
#include <mach/hardware.h>* X9 I o& K8 j/ {. `( v
#include <mach/irqs.h>/ R+ X9 |6 u) {2 U) M+ d
#include <asm/hardware/edma.h>" ?8 ^/ }& M9 ?2 u/ u' y! Y1 X
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#undef EDMA3_DEBUG- S, O) |* U; x$ ~) q
/*#define EDMA3_DEBUG*/+ ?# P- K, }) k+ F$ Q4 I
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#ifdef EDMA3_DEBUG4 ? n- ?/ I* Y. i6 c+ ]# g1 B: J
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)7 Y, M" t1 x3 |1 F& W
#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... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif" ^# @( U- X/ X$ B; H1 J5 @
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20+ Q) L7 w: Y; k/ H
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;. K2 O1 e- w! T. T9 J) |: t6 l
static volatile int irqraised2 = 0;2 `2 p+ g1 _9 ]9 }( v( z8 i0 A$ s6 m
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); s7 x: ^( t: a; B, |: ~2 @
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) }1 B# T2 J3 a' t, D
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 y' Q: n' ]: t& |: `% D. W
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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;
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dma_addr_t dmaphysdest2 = 0;( p/ {' m9 D) p3 V9 j; w$ K
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char *dmabufsrc1 = NULL;/ b2 F: x& i2 O
char *dmabufsrc2 = NULL;6 Z Q8 X! o' U% V6 i
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;/ h) v6 }. G! d1 J
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static int acnt = 512;9 v, [# R- O0 l1 N) D
static int bcnt = 8;1 z! T! D o5 ~' s6 t; w" b
static int ccnt = 8;% N# E/ q* f) F: v& k. i+ Z
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);( q2 R* R: q: b) [; r
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