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
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*! L4 X6 ~( K: D
* brief EDMA3 Test Application+ g( d9 [/ ~8 q$ u0 q6 e1 a* y8 `
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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) j( I. [% e! c; Y% ~+ [; E
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.; D7 p- s* t' h6 K- a6 D- [
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/+ L& H, A: d# s" Q1 i C
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* This program is free software; you can redistribute it and/or6 M' s! ^) u) i r! @
* modify it under the terms of the GNU General Public License as7 {5 X% A( J5 {8 z* ]9 Q, Z
* published by the Free Software Foundation version 2.( W- X' L( I% y, {1 G$ n) h
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any9 ^7 }$ ]3 N" i" @
* kind, whether express or implied; without even the implied warranty! u/ U- U5 z0 W, ]0 E
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.$ @* |9 q) F7 ]2 x$ u" x+ k9 l3 u
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>% X4 q- { {- |* x; K# L5 t) c; k
#include <linux/types.h>5 `. B, Y! }' ?: U( u Q" x
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>% ?; p- J4 I1 ?8 S
#include <linux/sysctl.h>8 O4 L# N9 n3 K9 l
#include <linux/mm.h>
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#include <linux/dma-mapping.h>9 H" H+ t1 Q3 o- E" Y& P
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#include <mach/memory.h>: a2 `0 M- w- J3 t+ o
#include <mach/hardware.h>+ ^& d, Q2 \$ |+ e2 A( i
#include <mach/irqs.h> K; N1 k2 n- D! l
#include <asm/hardware/edma.h>8 T9 x6 ~6 c( a7 d
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/$ A( D9 w: a# \" z( j1 ?
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#ifdef EDMA3_DEBUG
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#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... )" M' A7 a6 U) p j- ~6 r
#define DMA_FN_IN: w, X$ o% J6 \+ E7 }
#define DMA_FN_OUT. q7 i3 k2 |- ]3 a* h# _6 W
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 30 J! [! Z( p, I7 O1 }
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 215 L# X: ^* P2 e7 j
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23+ y2 s* ?- X C( q4 N' K) `
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static volatile int irqraised1 = 0;+ X( `8 ?, z! i) m) |4 L
static volatile int irqraised2 = 0;) g h! P/ ^ v6 R
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 S' s6 d7 o) U5 V/ ]# z
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);5 U' @( z4 p8 Y' H( U! u
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;
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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;3 p, j/ G3 `: L) |/ `: l
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char *dmabufsrc1 = NULL;# E/ V2 z6 q5 f S5 U2 G0 R2 a
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;3 y, @9 u0 r% T4 f% ~( {
char *dmabufdest2 = NULL;, [9 k% p, q" Q- z# r$ i
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static int acnt = 512; L) A' m. C3 ?/ }! v" Q8 N2 Q( k
static int bcnt = 8;% E5 j, X, o* g
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);/ M+ @# M$ j- W3 `2 w" I
module_param(bcnt, int, S_IRUGO);
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