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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/*" R! _% s* I4 n: Q
* edma_test.c i; E# p. a% ?8 J" S6 a. s
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* brief EDMA3 Test Application3 T. v i+ v9 R1 ]! `6 k: c+ L
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* This file contains EDMA3 Test code.9 W6 j3 X' I: ~: b* ~
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE8 U* h5 d+ b- K/ |9 u' c
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT2 G% k W* ~& {) |% S
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*- d+ C1 ?- `0 s% o( _
* 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' F+ `+ E5 ^7 b; F2 V2 {
* published by the Free Software Foundation version 2.3 H2 G1 d: ]1 Q9 E5 Y& A m
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any) {! e* s0 G0 w% A% D
* kind, whether express or implied; without even the implied warranty) d% _- w: b8 f, k
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the' R* B/ k* S" u3 d1 C" X3 u
* GNU General Public License for more details.
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#include <linux/module.h>
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#include <linux/init.h> F6 S7 ?: _8 j2 z; b+ |4 g
#include <linux/errno.h># A# k" K6 K G7 a# W
#include <linux/types.h>( k$ t8 @5 G5 k& A0 d
#include <linux/interrupt.h>3 j2 S p2 I" k; i, O! w
#include <asm/io.h>7 I% U. o9 s7 b
#include <linux/moduleparam.h>: X6 \( C% p( y
#include <linux/sysctl.h>6 U# F" t1 o5 F$ u7 w5 W
#include <linux/mm.h>& V6 Z2 ]% M2 s% R) t$ ]
#include <linux/dma-mapping.h>( ?, g4 j0 z9 s/ I8 a# {# n
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>. o$ ]! u1 E* @$ y- o! @; _
#include <asm/hardware/edma.h>+ h6 n( I2 p3 h) t
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#undef EDMA3_DEBUG3 r3 ?% M- d1 S/ q6 @+ J5 T
/*#define EDMA3_DEBUG*/6 u" A7 H5 g: b7 ]
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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__)- Q& @' u! j+ R, q: G, [4 K/ g
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN$ s! U$ n8 }& @) o: r4 y& ~
#define DMA_FN_OUT6 c& j# T* G; ?. k; x! w
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;4 w# Z5 I& a- h3 h* G% E9 w& N0 ]
static volatile int irqraised2 = 0;: w4 b& M2 b) S; o1 F' e4 V
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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);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 R; d% ^2 l5 D7 {2 |3 F8 `8 ^
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dma_addr_t dmaphyssrc1 = 0;3 V; R! X5 L3 V4 R
dma_addr_t dmaphyssrc2 = 0;9 c6 W4 n) D- t- `) P, P, E
dma_addr_t dmaphysdest1 = 0;* G# X9 K, h8 ^2 ^( a* X. `& ^4 ?% j
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;! G& G) n* a# u9 g
char *dmabufsrc2 = NULL;/ [2 r: O6 @3 b$ { z1 w- v8 Z& B3 d2 \
char *dmabufdest1 = NULL;/ }" c9 m, D& h& k: W# }; C. Q W
char *dmabufdest2 = NULL;1 y3 w0 Y* q: d! G/ O/ e4 D& G8 ^) Y
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static int acnt = 512;4 Q+ V/ d# j4 ^5 Z3 a7 b) r2 J
static int bcnt = 8;* @, u% e! ]! F. |
static int ccnt = 8;" y! W- H q% D
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);# J$ \. k: C8 o/ D( ~& o
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