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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/*# m6 f2 b% _. O! ^; I$ i1 U0 u
* edma_test.c
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* brief EDMA3 Test Application3 W1 q0 v1 Z4 E9 F
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* This file contains EDMA3 Test code.9 M, u: K$ b/ V' X, q8 S
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE% E: E; L0 j% R4 G, {; F
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT9 t. |& L% `* a
* TO CHANGE.3 h7 [/ G3 y, K
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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! v. V Y: Y7 _' e, I
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.& z5 y) r+ G& f" w# ]/ @/ U X
*
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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
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.9 a6 Y$ P& f- Z0 H
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#include <linux/module.h>, R) z& v# W1 H9 Q
#include <linux/init.h>( `1 G5 h% p6 o5 J
#include <linux/errno.h>
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#include <linux/types.h>1 C9 U9 y3 Z2 Y+ a" C$ K
#include <linux/interrupt.h>$ [) d* Y, E5 N* @* U
#include <asm/io.h>( b* c8 T% w, T: M6 S& p
#include <linux/moduleparam.h>! F% q( q* L8 K+ p1 U
#include <linux/sysctl.h>3 U4 Z6 C; o3 [ U# M. O8 @( G' [2 Z" ?
#include <linux/mm.h>: {, n: W2 T! j" {8 ^- J# D* I
#include <linux/dma-mapping.h>
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#include <mach/memory.h>! ]6 Q/ N. H7 a
#include <mach/hardware.h> }7 n( r( n. \) b
#include <mach/irqs.h>
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#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% g4 y0 Z# |4 j2 c& R; Z
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)6 O/ i9 b# h( ^7 g7 L" S
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__). k B) N) ? e5 z) B% `' q
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN( g% Z2 h: V& F% R: J3 B
#define DMA_FN_OUT4 ?3 P' A# _1 P* f% ^& m; Z8 b
#endif, Y# O& _5 n1 D& Q$ X: D3 s+ V
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#define MAX_DMA_TRANSFER_IN_BYTES (32768), Q! K1 e" Y d* y6 U5 g4 G
#define STATIC_SHIFT 3# S+ I4 N9 n9 T( U7 Y
#define TCINTEN_SHIFT 202 [- _9 d- |# c# U }0 c
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22% H, R! L' D, h, p, l+ c/ g
#define ITCCHEN_SHIFT 23: A2 E9 m2 j+ p# m1 D& Y. O% \
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static volatile int irqraised1 = 0;' v1 ]1 C6 n# p2 j
static volatile int irqraised2 = 0;# ]0 l( b% G* K- S7 i1 q. D# \* s" 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);
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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;
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dma_addr_t dmaphyssrc2 = 0;3 ~/ K8 y; L, J) i; X0 ?; }
dma_addr_t dmaphysdest1 = 0;3 R) V6 B/ c$ I" \8 |1 _
dma_addr_t dmaphysdest2 = 0;9 ?; ^' A1 G& t ?$ |# y5 \& ?3 T
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;9 n5 |: V8 z" N1 R
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;$ S: E& b1 V) m& C3 N3 I- Z# ~7 `# G
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static int acnt = 512;" u; k& R! d0 c: N1 V# W& R
static int bcnt = 8;8 H, I7 D7 @* `% ]
static int ccnt = 8;9 C1 {8 l$ v4 ^# L5 ~8 y8 n) f
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module_param(acnt, int, S_IRUGO);4 m/ ^4 O% n0 R. A9 u
module_param(bcnt, int, S_IRUGO);+ x6 n/ u u& t7 m# O$ g
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