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. O4 Q# R; X3 E) M k9 z- c
/*9 l0 V: L' h( s% y9 D4 V3 q
* edma_test.c
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*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.. A' A* a9 r9 G+ ~8 H
*
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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& j; V: S w5 b0 x# w! J) S; e. ]
* TO CHANGE./ B1 t O3 ?$ @, \( D4 Q
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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/ b- @) E& h, G' i2 |$ F
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.8 F. f6 q' G7 K4 I
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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" x. D( A& U% s _- B- r% D
* GNU General Public License for more details.' Z' E: k0 l: U E
*/
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#include <linux/module.h>
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#include <linux/init.h>4 x3 d0 Z2 R, I P
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>4 j* k, U; }" n# u
#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>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>' w, ^1 G1 i0 c0 d3 V9 I0 i9 {
#include <mach/hardware.h>! Y4 h9 X8 N. K) N' R& ]) ?. N
#include <mach/irqs.h>) ~% b: R; S4 w9 C2 W# P/ D2 i
#include <asm/hardware/edma.h>8 L1 A0 a; c- r' K& s$ R j. y; h
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/, ?; V* m/ |. H" c* v
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#ifdef EDMA3_DEBUG5 ?- g7 {3 R" x% f: d; z
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)- I5 V7 ^( q% y3 ^1 v& o% c$ _
#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__) G# u: E2 g. \% @
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN! ~# h: k; C" b6 ]& N# [
#define DMA_FN_OUT
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#endif u: E# q5 ^7 f; e. |
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 36 O# M5 I5 E1 D, d: d/ C2 Y6 T
#define TCINTEN_SHIFT 20/ X7 K6 A7 R) |' B, D
#define ITCINTEN_SHIFT 21! o) _) d/ x% o2 p* ~
#define TCCHEN_SHIFT 22' I |3 s" u/ |9 e) a
#define ITCCHEN_SHIFT 23: ^- e% I$ W1 Y E
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static volatile int irqraised1 = 0;8 { ]: y! f, z: d' x
static volatile int irqraised2 = 0;
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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);1 \( U% `, X/ _& J% K, c6 K2 Q
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 {4 l1 h `3 s) A" k/ r1 i1 x
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;. J- h4 J3 t9 ^' d2 v$ M+ i( U$ S
dma_addr_t dmaphysdest1 = 0;# D) o& c( B+ x; x( U. I; Y; q' X
dma_addr_t dmaphysdest2 = 0;. d7 C0 t, `! a. ^6 w
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char *dmabufsrc1 = NULL;, M3 S/ I" }- v, f, ^
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;6 L3 ], b( U. d: q0 w
char *dmabufdest2 = NULL;1 I; ^0 R, E& K" u m
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);0 T/ o+ z4 t# u2 n1 w! x6 p2 W
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