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) m: N' S2 ?) H7 S/ _9 D" I
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* edma_test.c! I+ t* w+ Y6 P
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* brief EDMA3 Test Application' N8 D! k3 e# c7 {0 i
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* This file contains EDMA3 Test code.
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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.* A# p6 b( D- a) _+ {+ e
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or7 a8 d4 K( C9 A7 s4 R& R' a0 x; C5 }- A* D
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.' I, A' T5 e( _+ z- M" j8 M
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any. n3 A! q# X, E4 N( Q8 r
* kind, whether express or implied; without even the implied warranty" b$ s! H& z9 e5 A; |, C
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the8 K2 `5 U6 @* c* N+ N$ p; z2 T+ A
* GNU General Public License for more details.2 g$ C" ?6 }$ x
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#include <linux/module.h>& x6 o+ {7 ?0 f; \6 c
#include <linux/init.h>) U* E) J/ m# S4 z% W. e: u
#include <linux/errno.h>' I3 K9 [9 d& x& x
#include <linux/types.h>) S+ M7 R; i# Y' G
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>
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#include <linux/mm.h> b+ t h4 D5 V# L
#include <linux/dma-mapping.h>4 Q; e- `) O- Y z! u4 h# E
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>- j) r$ k" d" P3 P7 F9 k, ?
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG3 S" n9 D9 v* V# i5 z/ O1 B
/*#define EDMA3_DEBUG*/% d4 |1 z2 b7 n5 P% i
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#ifdef EDMA3_DEBUG4 U$ \! F- a! e( y) Y- m* ^
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)8 [: t7 I* z4 h/ a. |9 v5 ^/ \* h
#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__)
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#else
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#define DMA_PRINTK( x... )4 ~3 R, X( r; e7 i" Q7 Z& p
#define DMA_FN_IN
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#define DMA_FN_OUT+ {, c4 N) K8 j+ g0 T) h
#endif. J& n# ?8 ]) ?# i' L$ E' T; b
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)& \1 s5 R' M$ Q4 s) Z8 Y5 W; P$ s
#define STATIC_SHIFT 30 f- u2 Q# T! _( [! Q: P9 _, C" F1 r
#define TCINTEN_SHIFT 20+ h: F' p+ Z& l* p+ k/ ~
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 233 j3 j8 u# A. `
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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);9 }- s2 V) E6 X
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;- ~; `! u- [+ r4 B8 m$ ^; [
dma_addr_t dmaphyssrc2 = 0;% H) b" u* V. o# Q- t2 H1 k
dma_addr_t dmaphysdest1 = 0;( I- c- z- b7 x0 D2 h
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;: R2 S" K5 w, d# B3 h( J
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;+ B; ^* g- \6 `4 o
char *dmabufdest2 = NULL;
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static int acnt = 512;( J& p8 s, Q, b
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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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