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. q2 o# y& V3 i* i6 P
/*% x, A4 d! }0 H- L1 y( A1 o
* edma_test.c b2 M( v+ S* l" H
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.' x8 } \7 x4 S% S
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE1 F/ \: G2 x3 Z2 r2 c
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT- q2 u- n* t \+ o0 w: d7 `
* TO CHANGE.4 [3 q# o3 a4 C- Z' i( D
*
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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 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. D. N/ ~# |; Q4 C2 i3 V# l
* kind, whether express or implied; without even the implied warranty9 }+ H, Y: u6 l2 _$ @) A
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>2 J, x8 c$ B1 ~$ ~6 \
#include <linux/init.h>+ g' z; ^0 B+ U* \/ |
#include <linux/errno.h>7 c3 @1 g8 c& \+ e7 u a/ W( L
#include <linux/types.h>, o& r o5 Y) A0 h
#include <linux/interrupt.h>
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#include <asm/io.h>2 e7 Q2 g$ H( ~8 N) S4 s
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h> S- A+ p$ R) s! `7 T
#include <linux/dma-mapping.h>
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#include <mach/memory.h>5 ~, H+ k* f. p
#include <mach/hardware.h>& E+ X, Z# f r# W1 L4 g/ k8 a% E+ P! y
#include <mach/irqs.h>& x. S& T" ]$ _% h
#include <asm/hardware/edma.h>2 m( Z) \. L: X" H# Z& B
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#undef EDMA3_DEBUG. E* L9 w; P' N# d K
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG$ s/ Y) ?% G. p8 v7 w, I
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)6 n0 k4 K; b8 Q- X+ J
#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__)+ B* U0 \8 H: W# p- _: E. R3 m N- A
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN( P) I" c, ^! V, Q# u( e4 U1 z
#define DMA_FN_OUT0 X+ e' `, D; V. S( f$ M% @* w2 w9 R$ j
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)2 w$ w" ~7 W+ _; @. j6 x1 g
#define STATIC_SHIFT 37 D4 z8 } L4 }3 j& v @ U
#define TCINTEN_SHIFT 20
#define ITCINTEN_SHIFT 21/ ?( x# ^, ~1 d; c
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;' t+ p5 N! [8 l0 ?7 R
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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 O# k- T1 i2 D& [1 E5 f) ]
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;9 F% `; w0 U) r* g- J: l
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;6 Z7 _% m! I* ~ K2 e" M
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char *dmabufsrc1 = NULL;- S$ V+ w- {: H& j& v a$ K
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;$ g* a+ `0 m. H& d
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);% X% T1 |+ e* h% 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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