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 application7 s3 T( m, J. V( P' q
/*
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* edma_test.c7 B, d; [- B% C" R& S7 f
*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE3 b6 [. f+ p3 B) G
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT! e8 W8 M1 P) o) t7 ~( j2 v& G
* TO CHANGE.5 X, e# ]1 z; t- J z* l. a! ?
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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/or3 [6 O$ |5 r0 \: y
* modify it under the terms of the GNU General Public License as( p, p9 g0 y; T( O! g
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any5 @7 U0 T% E" e
* kind, whether express or implied; without even the implied warranty# V3 p9 b3 z. f4 H
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the5 a' z9 l% k5 O: N2 c1 o! w
* GNU General Public License for more details.
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#include <linux/module.h>2 l% ^3 z7 d" g8 z2 i) |1 M
#include <linux/init.h># Z& l$ n( Z1 W* n
#include <linux/errno.h>" R9 e/ Z! T& A. n- n! T
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>( W$ t6 M6 E2 `2 h( i9 U
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>5 H2 A# @$ ]2 G: j
#include <linux/mm.h>, n( n4 ] s; S, C9 y
#include <linux/dma-mapping.h>/ r: w; |1 P `( Z
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#include <mach/memory.h>6 s) `# u2 V. U; N4 ]
#include <mach/hardware.h>- S/ X5 ?+ M+ c! N
#include <mach/irqs.h>5 P! ~$ B! O; x2 E! {0 c
#include <asm/hardware/edma.h>( B3 Q2 @9 @$ e b5 p; K6 {: {
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#undef EDMA3_DEBUG" t* u4 ]3 D5 A; }4 {
/*#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), b8 X0 }2 N) m3 P& [+ I+ {5 P
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__) }: X; W9 E1 h) [) `
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... ): K2 |# @: Q: Q+ M; W
#define DMA_FN_IN
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#define DMA_FN_OUT5 }: @' e0 \6 K) A6 _
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)6 g& X7 F) s( n; F4 c
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20& c+ R+ S6 ~5 @- k. |3 T K, q
#define ITCINTEN_SHIFT 21# i2 s; P# O8 K3 @* ]& A
#define TCCHEN_SHIFT 224 a7 C/ [1 Y) z* y H( g3 P
#define ITCCHEN_SHIFT 23* J1 t/ B; Y' J
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;7 Z: p1 X; S+ }
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* [2 t: Y9 e' J7 t& e
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) V9 y z" k5 D3 E, j. H& X' C
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;# L: E1 P' i# F; E$ S
dma_addr_t dmaphyssrc2 = 0;+ R( _& k f; h8 q1 f
dma_addr_t dmaphysdest1 = 0; o" a% D/ X. E+ }
dma_addr_t dmaphysdest2 = 0;, ^8 r5 O" L R) U( K& H5 I
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char *dmabufsrc1 = NULL;( g( A; N, C6 D$ g( ]
char *dmabufsrc2 = NULL;) S) \7 Y W& z) Y& L& ^0 F; v
char *dmabufdest1 = NULL;& I. B; Z9 z& c! {2 Z
char *dmabufdest2 = NULL;1 Y) o* S( K( Z% Y# a( |
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;0 }( ?; r9 T) R8 a2 k8 \
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module_param(acnt, int, S_IRUGO);4 S* k; o7 q- U
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