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 `7 a/ G5 F# O$ O% l- d0 i. F
/*
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* edma_test.c
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.# v) m7 b1 G1 |9 P2 ~$ Y
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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) d: P ^; C8 f& L) j/ |4 y) I% s: v
* TO CHANGE.+ i. Z* {5 V) T- ~, O9 l9 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+ N2 U# l& D" h: g' U
* modify it under the terms of the GNU General Public License as, z% ^ N" S! l8 n
* published by the Free Software Foundation version 2.5 G% S( Q: }; V
*- F' X9 N; `: \4 {# d8 K
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the: s! X6 x2 h/ | G4 K2 j( `
* GNU General Public License for more details." l$ T0 j, X+ i# j6 N
*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>( B/ e9 T3 m# @7 g# ]# y
#include <linux/interrupt.h>. T: l- U r3 x) d6 w) R2 b
#include <asm/io.h>; ?$ f: }! G4 O6 x7 @+ j
#include <linux/moduleparam.h>* `" ~% \+ l3 Z( F# r# l
#include <linux/sysctl.h>
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#include <linux/mm.h>' v& |1 b5 K: _. i) E
#include <linux/dma-mapping.h>
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#include <mach/memory.h>5 @) }* I6 L- W
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>8 h+ u7 |/ b* @( u
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/) Q0 n) G. B# }4 [) L+ O, N* ^
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#ifdef EDMA3_DEBUG+ c* |2 y: S& M6 n+ Q3 R
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS). B' P# J F K3 r. ?
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__): r9 { O! e! p+ p4 f
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__); o* b, A8 c. P9 J( e; C
#else" ^7 W, `' |- }% r& ]- I- B' S
#define DMA_PRINTK( x... )
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#define DMA_FN_IN) e( |; X; [: Q, G( C! T) R; |' }8 r
#define DMA_FN_OUT6 d% J( R7 P, \7 }% ~
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)+ @! ]* _/ [4 ~: w
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 216 V! f: o: r1 W& P$ r% Y/ W
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;* a( r5 w( {; j9 C
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& w0 p- }7 V# p
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);) K. g9 i" p; X
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dma_addr_t dmaphyssrc1 = 0;7 S) k! \' U+ x A' D; X( H
dma_addr_t dmaphyssrc2 = 0;' E* S9 b* `( C0 j) o
dma_addr_t dmaphysdest1 = 0;2 U! j$ ]1 G% s, j) s+ H+ g
dma_addr_t dmaphysdest2 = 0;5 g$ v) H" T% G4 M
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char *dmabufsrc1 = NULL;2 \+ I9 x U3 z: V. \ Z% R
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;9 K8 M1 _; H$ J6 q
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static int acnt = 512;8 ?" d% `& V% [6 M
static int bcnt = 8;/ n% v+ f) p/ l, i5 o! N
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);
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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