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" X8 _: R" L, T- V3 L5 o$ s8 d H
/*# X: G" Z0 S) n
* edma_test.c: l, w0 }9 w M' L$ j
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* brief EDMA3 Test Application$ v' C K# A9 P6 T* i0 `
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* This file contains EDMA3 Test code.1 s S5 l( I7 O6 S, r! P9 s
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE: O* ?! e9 U- O0 k" H) \3 e
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* O( `# c: x% F4 r5 P4 X
* This program is free software; you can redistribute it and/or) a+ D# v. G, S1 s: A M% X
* modify it under the terms of the GNU General Public License as5 [6 E+ y" Z+ J
* published by the Free Software Foundation version 2.6 P8 ^, J- Y$ {, i0 \$ j- x w
*- n3 n W4 B% V( [9 n
* This program is distributed "as is" WITHOUT ANY WARRANTY of any8 d8 r8 r7 G8 w0 T- }) v: }) l, D
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the7 C( g! l9 K% e, E
* GNU General Public License for more details.! B. z+ P, Y4 R/ F
*/
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#include <linux/module.h>+ r* e3 y3 P5 Y9 w0 i
#include <linux/init.h>( q+ m7 k! F* ~. M3 D
#include <linux/errno.h>/ `' I4 ~! ~- Q3 w; t; M
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>8 L) s+ a7 W9 s( w9 Y% L
#include <linux/moduleparam.h>8 E. M! J- r/ K5 F
#include <linux/sysctl.h># E4 {- E' F4 H4 L! A" V
#include <linux/mm.h>
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#include <linux/dma-mapping.h>; s, p3 y; J0 q; ~
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#include <mach/memory.h>% h- O9 b: \& Z* _
#include <mach/hardware.h>
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#include <mach/irqs.h>* ~, p5 B# H" a" p( ^+ S
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG; z) |) y3 n+ {& u6 _3 V9 h9 E
/*#define EDMA3_DEBUG*/" n, F* s0 k" c ]; M
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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__)+ g. C4 y8 [% U" n
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else) J h' i$ `4 Z+ j/ O2 w. T# D( o
#define DMA_PRINTK( x... )9 n! ~! ^2 \8 m% t
#define DMA_FN_IN
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#define DMA_FN_OUT" i$ N( h" Y5 O( h# p
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 39 C8 o5 e2 w v! Y) L
#define TCINTEN_SHIFT 20- ]" {6 ~4 t Q% M) P! C( i! q V
#define ITCINTEN_SHIFT 21" g/ X# y' {9 R5 E- W
#define TCCHEN_SHIFT 228 w- _+ H, ]" ~2 B& r9 s/ v
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;. K: N9 k. _3 Y$ S1 v# U- l
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. S' }$ M4 F, U# z' t& p! u6 y% W
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;* R5 d' _3 g* y% V
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;/ |. u* ]: e8 @) I" }
dma_addr_t dmaphysdest2 = 0;9 {- B2 C, s0 ^+ j: S! T
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;- y# ]7 {; l" K7 d6 B9 ]0 s# y
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;6 k1 q2 f M6 H6 N; W2 u" g
static int bcnt = 8;
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static int ccnt = 8;4 x! T+ s" I. Z* l& L
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);2 d: O* S2 B% h0 Q9 z8 s
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