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.c1 A+ T$ t9 u) i' K- F( R5 k
*
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* brief EDMA3 Test Application1 b* W$ l( ^9 x, r
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* This file contains EDMA3 Test code.
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*
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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+ l2 O1 b$ S2 L8 f0 b/ E
* TO CHANGE.$ }9 O0 R- Q8 C
*
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ A: j3 J U# d: W
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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 2.3 g7 m* r, Z2 N' s$ q
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any' ?0 Q4 a. c5 x7 S" z4 G
* kind, whether express or implied; without even the implied warranty6 l- { `7 w9 B: c
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the l, K# v, }+ W+ i
* GNU General Public License for more details.
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#include <linux/module.h>1 E. d/ H! U0 Z2 b- B
#include <linux/init.h>0 p& l- W# e+ W, U, T
#include <linux/errno.h>
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#include <linux/types.h>0 J H) _9 Z! ^! T* c* U2 l! @+ Z+ |
#include <linux/interrupt.h>$ B/ A& S, ]- }$ c8 W. N/ G
#include <asm/io.h>0 w8 q0 R, l" V/ Z: l, s4 X
#include <linux/moduleparam.h>" K1 q' I3 Z% m! |8 a9 N& l
#include <linux/sysctl.h>+ c9 ^0 U3 z3 n# f- L4 k
#include <linux/mm.h>
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#include <linux/dma-mapping.h>2 U. h0 Z2 i: _0 ^" G
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#include <mach/memory.h>8 ?& z; M# I" o$ F+ U! T
#include <mach/hardware.h># `: G( Q+ w. n; j
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>$ A1 o/ V" a$ E w1 ]
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#undef EDMA3_DEBUG( R; v% E/ o V( m
/*#define EDMA3_DEBUG*/5 n: Z8 r" U- g7 G
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)/ i8 A( J+ S9 `6 X6 I+ |
#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__)3 X$ a9 {. T, T$ _* ^* h
#else
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#define DMA_PRINTK( x... )- ]& [4 h2 M9 V4 U. n; ], j( C" ?
#define DMA_FN_IN
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#define DMA_FN_OUT; F# [, W+ I, [9 L; d) k
#endif7 k" K6 |) g% u- Y, Q1 w
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3% L5 u7 b5 K0 u! n8 {/ u: K
#define TCINTEN_SHIFT 20: _0 y6 k) J a4 k
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 233 a1 K3 T4 u5 ~ C8 d6 Z
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static volatile int irqraised1 = 0;7 I% N- [/ O( Q! }% v4 y) Q
static volatile int irqraised2 = 0;9 m, \$ c% M- Z
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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);0 X3 j2 o: S! c! r" k
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;% W+ M( N6 I, I) e/ {3 r
dma_addr_t dmaphyssrc2 = 0;; D- a# N2 h3 s `9 L. N
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;4 N9 f: p3 e/ Y8 ]: [
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;' M7 U- ]& f8 h7 S2 e( z4 k, T
char *dmabufdest1 = NULL;! k1 h1 E7 X! g' K
char *dmabufdest2 = NULL;; X, k- I+ G; K0 [3 [2 Q
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;. q, ^' B1 X* s( Z0 J9 d V
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module_param(acnt, int, S_IRUGO);5 C3 [, y' n9 d1 i/ K. a8 I/ ^' G
module_param(bcnt, int, S_IRUGO);# J9 t% K- m/ g) V1 p
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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