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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*$ N1 n9 K6 c. O! Z* i, H. T* l
* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE8 g; B7 g" V, M# k
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT8 X" P8 A; D3 Z4 B* g5 ?
* TO CHANGE.9 j8 f6 B. _% Z, x
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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/or0 r; D+ m( N. U) k/ m1 w
* modify it under the terms of the GNU General Public License as/ L5 O9 M; ]* l" N. w6 l- `/ e
* published by the Free Software Foundation version 2. i9 m) W1 L, E# f4 q
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any7 f' P. \! b: n& a! J. _
* kind, whether express or implied; without even the implied warranty0 G2 m# p0 S- {1 g6 ?/ e5 Z; d/ o& x
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the5 c% I% k$ ~- Z( ^& r6 q. J
* GNU General Public License for more details.
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*/
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#include <linux/module.h>/ ]6 D8 J* s _( w7 z! N5 a% S
#include <linux/init.h>
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#include <linux/errno.h>& X' q2 O+ z( ^3 z5 C
#include <linux/types.h>$ c! r* j) b) a8 u4 m
#include <linux/interrupt.h>
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#include <asm/io.h>* V5 s( W! X. K% n. O& h0 K
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>$ i; b; s5 W3 Z6 s; L3 \3 v
#include <linux/mm.h>! k# h2 x% Z0 k. b, D: p4 U
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>- p v9 G+ }% n1 _3 ?5 k: d
#include <mach/irqs.h>, J- x7 W* r2 e1 J8 f% u
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG: Q# U4 A: i8 g9 H9 p! F
/*#define EDMA3_DEBUG*/0 s l8 O- C4 R X1 h2 ^
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#ifdef EDMA3_DEBUG8 `+ I$ F3 s! s
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)) @2 ?( Q- |/ {3 }+ V& D6 s- f& I& n+ o
#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... )* I" P* {' r, K' L
#define DMA_FN_IN8 Q' ]0 R8 ]( y. e7 J0 a( f) ?% R
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)4 S2 F7 ?1 G3 `9 T
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21( u/ K3 D8 |& D! G9 ^7 W& {3 m! N" a
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23' M/ Z1 m3 a" c+ a! v
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 j$ u- l5 Y. G: }
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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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;4 Y, L0 z+ [- x& \
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;% v: h+ Y5 D# v' F7 M d. t
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;; q/ L0 O6 C5 z; i8 o( ~
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);& Y, v" q- k. p/ m1 }# p2 P
module_param(bcnt, int, S_IRUGO);) p3 R* e9 X+ X- y
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