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 application5 W" q* W. q3 \, Y% I
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* edma_test.c
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*
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* brief EDMA3 Test Application, f5 W$ R+ A5 A8 ]! N( W
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* This file contains EDMA3 Test code.! @/ p+ c- w% W8 ~
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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/ T, z, X) L8 m# J- @3 Q
* TO CHANGE.# o" i5 y0 @+ }/ Q- N7 M
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/% ]/ a( P, K5 z: f7 }5 Q! W# e' n8 i, u
*
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* This program is free software; you can redistribute it and/or3 y- ~+ O' ?% `- }. W
* modify it under the terms of the GNU General Public License as3 }1 H6 Z$ Z/ U* E
* published by the Free Software Foundation version 2., W! U, x2 H5 a; a4 y# {0 k
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty1 n6 P2 S3 p0 w" O# R
* 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>) O, {* w; p. W# i
#include <linux/init.h>5 J! |2 a+ R0 h. O: r) Y
#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>: ~* W% @. f4 A+ L0 C
#include <linux/sysctl.h>( z6 r# |. [$ g( @8 h5 P7 X
#include <linux/mm.h>7 X9 b0 G4 \: m* m. Y, S
#include <linux/dma-mapping.h>( R, Y7 B# P/ X
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#include <mach/memory.h>$ W; h. l O4 `, P7 W; o
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG' m: o! p: d6 t
/*#define EDMA3_DEBUG*/6 r I, o# ~4 C- x- e
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)- P% ]7 v0 v" n6 ]$ U" `7 u
#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% ^* Y" r0 Q2 r6 C3 \
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif. k) W/ J9 X2 p3 H4 s8 d* V6 U
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)( N ?9 W; W' x; Y- `2 Z9 A
#define STATIC_SHIFT 3! b6 h6 P# }/ E
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21! ]- U) t8 v/ ~5 ?" a6 _
#define TCCHEN_SHIFT 22$ p" O: g% s6 V3 H& w
#define ITCCHEN_SHIFT 237 |6 R3 a5 p/ p) i8 e8 ]9 i
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static volatile int irqraised1 = 0;6 m# i" c) ~$ B* F M
static volatile int irqraised2 = 0;% d3 k, U% x+ C) ^3 n
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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);3 T5 M& y* ~ y/ S p" l( m* K
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 y$ K' @6 g# L9 C! h
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dma_addr_t dmaphyssrc1 = 0;. w( V7 p" H) o7 g# ?
dma_addr_t dmaphyssrc2 = 0;
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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;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;6 u4 E }, O- X
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static int acnt = 512;% A6 |- m' L4 ~; L
static int bcnt = 8;/ M& X/ j5 A1 w, d) Q1 r: A
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);; `7 }! H) x2 m5 Q5 U) |; \; N K
module_param(bcnt, int, S_IRUGO);% j5 q$ ~& V/ {1 Y$ b
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