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( H: B/ H( \$ I, U- A, O6 J
/*: \& Q6 H% j+ n! x" {
* edma_test.c$ `2 \6 N1 t& W
*
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* brief EDMA3 Test Application; i# w) L' ~1 x, c* x3 p
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* This file contains EDMA3 Test code.6 |- v5 T2 A6 V4 U! A$ \
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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
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* TO CHANGE.% X. |% J- K R! K3 H5 L* }
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or: x& h4 z3 z1 Z. N( d- `& w
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.3 z. |" f. ?7 r3 u \- \0 _
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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 warranty |3 w- |, K- A1 p9 e# x
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, k! Y: z/ N( n; O( k' Z
* GNU General Public License for more details." e% I7 T9 |' R9 J Q; S
*/
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#include <linux/module.h>
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#include <linux/init.h>7 N- E+ l1 Z6 n2 M+ n# q! l) ]# m( T
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>, n' u& E& D) C4 f8 b% _
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h>- ^; n! @: Y, G6 n$ F' C
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h> w5 q5 \7 N, ^ F! ~
#include <mach/irqs.h>0 h0 n/ f. j- T* o2 P
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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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__)0 }+ `2 f. C0 Z
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else7 v/ k5 O1 Y! A1 A h2 ]% b1 n
#define DMA_PRINTK( x... )7 F5 x ^4 G# d
#define DMA_FN_IN
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#define DMA_FN_OUT( [. a4 F4 i; A( i/ k0 V
#endif; W0 ^4 e% H# N+ U! m* a+ y& Z
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3* g# p, A* [3 ]& f5 A4 ]0 z* D
#define TCINTEN_SHIFT 203 v2 o. l2 o! s4 U
#define ITCINTEN_SHIFT 21* E- C, e: K! \6 [; ~5 B d( M
#define TCCHEN_SHIFT 227 H( ]7 i9 r6 m( l' P
#define ITCCHEN_SHIFT 23- x- U0 n+ W& L+ H: h" x, G
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;9 m$ Y" t" @0 D3 l- v, T
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. M j2 Y5 g3 R6 h# R' }# }
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 @( C6 X" S. [4 c
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 E n2 t* k3 m- d) Q
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dma_addr_t dmaphyssrc1 = 0;) g3 \- H/ s0 w A# x: A
dma_addr_t dmaphyssrc2 = 0;7 U2 G; j& E2 A- ?! Z! d8 u
dma_addr_t dmaphysdest1 = 0;& u4 n8 `* T6 h, e6 c6 H( A: Z
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;( b' V9 G4 }) ~/ x6 d) D q
char *dmabufsrc2 = NULL;& Y$ q& t. n( B; Q% g0 | a8 B
char *dmabufdest1 = NULL;' {2 x, ^" u5 k& `" e
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;) F9 F2 k3 b5 ]' u9 ^& Q
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);( O x \& y1 F& _
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