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.c" O, x- _6 s8 q4 {' a& f
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.' z V0 s, B+ A
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE% t s5 n/ Z1 P; U) y( Y6 g0 ^
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT: W$ R8 o" X) n0 p5 s4 r
* TO CHANGE.2 h* R9 W6 N3 N' q4 K% f
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/8 ?6 Z' y; h3 P/ u" p( I
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* This program is free software; you can redistribute it and/or1 {- p9 b9 P ~0 k( Z& H" U" T0 F$ d
* 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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* This program is distributed "as is" WITHOUT ANY WARRANTY of any [, f9 d1 }% \2 O
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 H) ^& N3 \! V5 h& P
* GNU General Public License for more details.; @. o8 ]! R1 ^' a
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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>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>& r! k7 c1 A& o- r; ]
#include <linux/dma-mapping.h>+ q4 ^' @0 X: B: f: z3 V
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#include <mach/memory.h>6 K* S9 \ N( R2 M/ F# ^" W
#include <mach/hardware.h>
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#include <mach/irqs.h>* m$ p2 J3 W, _$ D" [
#include <asm/hardware/edma.h>2 [$ G, m6 k" C7 x3 s* T
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#undef EDMA3_DEBUG- x9 S8 L7 Z( C$ @/ F' N- w
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG ^; G U C9 c* k( C; p3 G
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)3 T$ R1 v/ b. U' i4 g7 o
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)) e6 ?; ]5 q) ?4 y1 ]4 d
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else- g2 W6 M1 d O8 D2 n
#define DMA_PRINTK( x... )
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#define DMA_FN_IN/ G$ E' O$ [' G2 m! ~( _
#define DMA_FN_OUT) G6 I! t! b9 Y. x
#endif' k8 i( A: W8 D/ u! l* N$ U/ f0 \
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)1 [) i! w* x; S
#define STATIC_SHIFT 3/ i& m. q2 L7 |' _* b+ w
#define TCINTEN_SHIFT 20$ F* O& S; j6 y1 X5 S
#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;
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static volatile int irqraised2 = 0;, W. P- Y: C: T: y; i3 k$ T: y. o7 ~. c
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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);! _. _& k0 g/ W
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;. L* k$ y, X; q+ s) O1 Y3 z9 T ?
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;( I6 R: t, v. i) v6 X7 t
dma_addr_t dmaphysdest2 = 0;% z2 W# W8 r, z. d1 J* M
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char *dmabufsrc1 = NULL;% z8 R. Z# A9 z* V7 g# f
char *dmabufsrc2 = NULL;5 \1 M. f8 Z w* d: o
char *dmabufdest1 = NULL;! E* J3 I5 g6 P! x. g; c6 s
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;; |1 p6 f5 d" ^: }& x* r
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);. J1 {, t9 d& I3 j6 r; v% a
module_param(bcnt, int, S_IRUGO);9 c! K2 `; D) T. m* `8 L* [
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