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% a ?3 p: t u- J3 {
/*
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* edma_test.c
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.' ]9 F# b/ n2 \( j- w
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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 SUBJECT5 B1 z2 p/ L8 r
* TO CHANGE.& a: Y2 Y* }6 @* g T6 Q' Y: O
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ P& u1 c2 W" I( f4 `
*
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* This program is free software; you can redistribute it and/or* G. w( ]8 z% C) K+ u
* modify it under the terms of the GNU General Public License as! N( X# e! u, n
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any# q, P0 [- N9 I! k) d
* kind, whether express or implied; without even the implied warranty7 m( r) {8 R7 q0 J6 t
* 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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*/
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#include <linux/module.h>
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#include <linux/init.h>: E0 p j- B6 v: p
#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>6 X: K, x) e) H1 m+ K
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>* l3 z! M% b- X" c$ z( [ m
#include <linux/mm.h>
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#include <linux/dma-mapping.h>& a/ m1 o- M) {' p7 R# N
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#include <mach/memory.h>. ]) M, H( n% h/ [+ y; P2 S3 o
#include <mach/hardware.h>* A, t9 Y; q) y9 r: R8 K* S- T
#include <mach/irqs.h>% B% L( L' j& X9 I3 W0 q) |
#include <asm/hardware/edma.h>. S1 \' J. b K8 W0 X/ |' B
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#undef EDMA3_DEBUG) H% ?8 w: D" |
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)6 Y5 W9 {, L+ [3 T+ w0 P$ s
#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__)/ f! |$ S5 x, i5 p% {
#else
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#define DMA_PRINTK( x... ), H' L$ b, ~0 X, J6 Y8 Y
#define DMA_FN_IN. i" I' E; j. e4 x
#define DMA_FN_OUT$ s. @ S2 a2 {5 Z
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)2 @$ j( v: S2 @1 B; }" m# w# _
#define STATIC_SHIFT 38 N5 l9 a9 L x4 w
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21 z8 L, J2 ~5 Q$ V$ ?
#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;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! G, w- {! h; B2 ~4 u2 K
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);; ^$ v0 l, ]; R, t7 X
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dma_addr_t dmaphyssrc1 = 0;9 z) R# D2 ~, z( y
dma_addr_t dmaphyssrc2 = 0;0 v+ }2 x: b2 w0 ]/ ]. I
dma_addr_t dmaphysdest1 = 0;+ B+ v1 {+ t7 l) j' n" s
dma_addr_t dmaphysdest2 = 0;* F0 k ]) }1 F
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;0 j6 Z f3 [+ y
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;7 g1 U4 Z. [% t4 c! D" }) C
static int ccnt = 8;4 t) G6 M& P. W1 D! I
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module_param(acnt, int, S_IRUGO);. y) a8 ]( X! ~* z: h8 }
module_param(bcnt, int, S_IRUGO);" B2 _; N$ U% @8 b+ 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