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 application8 |4 i, J2 [9 f4 R6 L0 L
/*6 T' B4 k: z$ T- F- @! T1 b
* edma_test.c: L& N' H9 O) c. J! m$ G5 Q- ^
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* brief EDMA3 Test Application* q; |! J2 ~1 p' p `+ V- W
*
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* This file contains EDMA3 Test code.3 \ S2 q6 x _' n2 \2 ?- O' V
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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
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* TO CHANGE.& _" m3 ^* h* ~& k
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or: F+ R& p. ]* m+ {, c4 Q& s
* modify it under the terms of the GNU General Public License as4 L& w5 k7 \ N' Y
* 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! K& G3 N# f8 V' S; b1 c; m {
* 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.
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#include <linux/module.h>/ }8 r C5 A* |% q; j
#include <linux/init.h>/ p3 B* \/ S8 w( n; B- K+ {
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>! {7 c/ S( t, E" L5 D' K- W
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>- j; c. A5 j7 O5 N$ e; v
#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h># r/ |* Z9 i: g( G+ v
#include <mach/irqs.h>+ U, Z, ^0 u: I. S% Q
#include <asm/hardware/edma.h>6 ~, x' Y9 r; ]3 b, l4 O0 D% s
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#undef EDMA3_DEBUG' u4 ?- J! ~2 d
/*#define EDMA3_DEBUG*/: ]0 N4 _# S% I- i ^7 S, j9 E/ G
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#ifdef EDMA3_DEBUG0 N; N2 I7 i' S/ {- `3 w7 |
#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__) y% Q5 K2 Z0 s( ^( z1 T
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__): H$ @) C6 |7 O6 U2 K5 B6 x) G& I6 E
#else0 O" z0 B2 S' |: f9 m
#define DMA_PRINTK( x... )# Q# H: }' N) G6 n1 a; F- B
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)/ m' L5 g7 {0 W9 K8 I4 Q" J& p
#define STATIC_SHIFT 3( E/ U9 @: t. E1 m8 J- S% G
#define TCINTEN_SHIFT 20$ Y( O1 H S* s' y( Y+ s$ ]" ?& d2 E5 u# d
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 238 z" G) a) d9 Z9 s
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static volatile int irqraised1 = 0;( j) q# g, q& e( {
static volatile int irqraised2 = 0;8 l% i, R6 L, [) u: }
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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);1 C6 h! x6 ^/ p0 h3 @8 Z
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dma_addr_t dmaphyssrc1 = 0;9 U5 a$ O! X" x9 {9 O
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;2 Q# W9 {$ M" ~) V% c
dma_addr_t dmaphysdest2 = 0;8 w* _1 V# H9 \
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char *dmabufsrc1 = NULL;/ ], L2 ^' O$ S# ^% o
char *dmabufsrc2 = NULL; G+ J9 W ^: y: c4 B {' |. k
char *dmabufdest1 = NULL;4 Q( \3 p% Y2 z8 ]4 m9 f b9 H' x
char *dmabufdest2 = NULL;$ A8 s4 Y$ C* O( J; _: x
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static int acnt = 512;8 K5 d$ I, M8 o. x! i; z4 ]# s* U
static int bcnt = 8;5 \* Q8 Q! n+ |- q
static int ccnt = 8;. j1 @% Z2 w/ r' l
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module_param(acnt, int, S_IRUGO);1 v! [0 P) J( E" T& 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