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+ x" C1 q* t% z$ j, O
/*3 N) \* m) {- \8 R3 Q
* edma_test.c
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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*# G2 {# b5 [% X0 }7 ~6 J
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE$ L5 @9 c! ]6 h' J# f+ O" O
* 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/& X) D) m8 _& M8 d) w$ \. P0 |: h. f
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* This program is free software; you can redistribute it and/or# Z8 [, ~$ \; Z" ?3 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.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any: X1 ]- ^; c3 b6 K. ~/ s+ H" H
* kind, whether express or implied; without even the implied warranty$ V9 C( o B% K. V7 K& N" h
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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#include <linux/module.h> k- B" K C! m& C, `
#include <linux/init.h>8 N3 l( H" M% B9 g7 a4 D* L
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>6 v/ F; G; C3 K* J1 r
#include <asm/io.h>& \ M2 E2 {" T% W% U" X. s
#include <linux/moduleparam.h># `& \* ~2 B. i! k
#include <linux/sysctl.h>% t) j V w m/ Y, {5 n
#include <linux/mm.h># U/ D9 Y# I$ n! W. f) s0 s; k
#include <linux/dma-mapping.h>- ^: W% K/ _4 i; [, a2 ?% Z
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>; Q k6 D7 G8 P+ x7 y- u
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/3 i: [ D' T) e
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS): e! W+ Y; ^& A) D1 o7 G
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)1 Y0 J" C7 Q/ ]
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)+ Q' t( Z8 s2 r1 N; u5 n7 l
#else1 `. j% M. F- K3 M
#define DMA_PRINTK( x... )
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#define DMA_FN_IN% R: y" c, @9 M1 [' f
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3! ?; P k6 K0 ?3 l. O$ a% @
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21) [, E" N# l1 I/ b: P: w
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;+ d4 s1 p) J! @2 a
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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);' h' q$ z# R( D! ]6 f4 g. O: G1 y
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;" e4 \/ j9 I- s6 s2 D
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;4 O4 h% q# T7 ]' L) T" s" B# m- X$ } {
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;$ e( z0 R) G! F* v: c e2 E
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;2 G; K- ?3 B3 X
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module_param(acnt, int, S_IRUGO); u) ]) K, i& B$ ^
module_param(bcnt, int, S_IRUGO);# C2 A4 F" U' b. ~4 u4 o3 O6 f
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