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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/*
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* edma_test.c
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*
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* brief EDMA3 Test Application% o0 H4 s; y7 L
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT! x4 l0 p. V: {: J. e" F' ~3 f- K
* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/& y) s1 O% K; w4 k) x9 J- O+ w
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as: Z# z$ k+ P$ g& C# A9 Q
* 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 any8 v" z9 a Z! G' X( D( i0 F
* 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.2 k- k# R5 z* Z. l. v9 n, x
*/
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#include <linux/module.h>% p+ ] H+ @! k, x! W6 p
#include <linux/init.h>
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#include <linux/errno.h>/ A+ S7 P- I7 {" f: {, q
#include <linux/types.h>- `6 B* S" M$ w& a" E
#include <linux/interrupt.h>& A5 ?! s, W/ _2 P4 }' ^( |3 ^
#include <asm/io.h>! ~* }% P& z7 U3 `, k0 q5 X5 H) e t
#include <linux/moduleparam.h>8 B0 ^4 R+ O6 N9 z
#include <linux/sysctl.h>) z# _/ X' F6 K, g9 D/ s$ w+ C
#include <linux/mm.h>; N, }" [5 ^' i; J
#include <linux/dma-mapping.h>0 O9 ]) t' V" s! y6 k5 b
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#include <mach/memory.h>2 o! |3 T8 Q; h4 P- ^: L
#include <mach/hardware.h>
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#include <mach/irqs.h>8 P: ~ M2 w( m4 E
#include <asm/hardware/edma.h>* p9 s8 n9 Z# t; u- I
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#undef EDMA3_DEBUG" D$ ^' ]- k% p) q3 K; J
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG" p; V3 F1 @( C1 }' A/ w
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)! H0 n$ a: P2 h* h$ M& D) U
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)- k6 T9 E' T O$ }
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)7 n2 u0 c" y% d. }4 V4 ]' `' E* Z
#else0 g- ? W3 I3 a5 e" ^( ]" G0 B( E
#define DMA_PRINTK( x... ); T/ N; g3 k) n7 p+ [
#define DMA_FN_IN0 y# l/ x5 b8 Q2 O
#define DMA_FN_OUT8 X+ Z a+ R$ [( R! I8 n# {3 C
#endif* q# @5 f0 D; d$ y
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3$ n+ {; i5 o* r! N2 K' A
#define TCINTEN_SHIFT 20; }/ ?. [5 q' x( O3 S7 `' ^
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22. A9 s/ L! m1 J! B3 d. H: B
#define ITCCHEN_SHIFT 23* Z) M! Z( c2 j& d# V
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static volatile int irqraised1 = 0;! Y& T9 s7 X+ c* Y
static volatile int irqraised2 = 0;7 l6 P; k0 z ] H) d
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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);' }* s$ r4 F- u( |: y6 f
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;
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dma_addr_t dmaphysdest1 = 0;; L, g1 [% B" L4 {$ {. P! P
dma_addr_t dmaphysdest2 = 0;! Z) v+ h- u/ r: t. s& M
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;5 Y+ [( e- g5 Y8 r( c. F) r! L
char *dmabufdest1 = NULL;0 i$ V2 o# Q6 x$ K
char *dmabufdest2 = NULL;+ d! ^% G1 U; n/ E/ M: t" M
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static int acnt = 512;7 @) }6 }/ c, M2 ?# u( f: q" K, q
static int bcnt = 8;! m% ]8 ], p, \9 n0 F& ^6 p
static int ccnt = 8;& |, J6 ^4 N- F8 k* F6 Y; E
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module_param(acnt, int, S_IRUGO);# b# _+ u1 ]% L) t, H
module_param(bcnt, int, S_IRUGO);' \9 T3 z& S& J* D4 Z8 X
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