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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/*- X. b+ e; F7 {6 {* C4 R
* edma_test.c
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*
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* brief EDMA3 Test Application
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* This file contains EDMA3 Test code. r3 R( N/ L% ^: g0 ~1 l3 W2 e* s" E
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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 SUBJECT7 S4 R+ H+ S9 }
* TO CHANGE." V% ~. e& i* Z! }0 y- i& T
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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/or; h' i* {$ W M Z. r/ ]
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.4 r7 Y8 j: p" N; p& z
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty" h N, G: n2 N% u; z
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the5 |" |* [% _8 o- [
* GNU General Public License for more details.; X' P1 V/ u; P/ r' J R% @8 x
*/
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#include <linux/module.h>2 }9 K% I* P) {
#include <linux/init.h>$ M4 f/ f$ u" X5 C) V% w
#include <linux/errno.h>
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#include <linux/types.h>/ Z+ D/ |& w" b# j4 k3 Y P
#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>* l2 N2 B7 {! t5 G% I; L
#include <linux/mm.h>! i' S, I% x- @) |# m2 O. V
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>2 w6 L0 B9 e. X; I; l" h
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>4 u+ w1 `* d* ?9 l) Z# }
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#undef EDMA3_DEBUG+ k0 I4 ?0 {9 N }
/*#define EDMA3_DEBUG*/; @+ |, Y: y! G. r+ A
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#ifdef EDMA3_DEBUG% z9 z7 `1 H4 m
#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__)
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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... )0 D2 Q5 F3 }& w9 c
#define DMA_FN_IN
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#define DMA_FN_OUT* r! C/ ^+ Y8 t3 G: u3 l
#endif' E7 i' e b; F0 u# r. ]
#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;! l& {7 n& E) Z* \9 p: o' v1 \
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);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 Y) T5 K8 a! Y* F" o) r) L7 r9 O
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;
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dma_addr_t dmaphysdest2 = 0;+ i- ~" K: u# Z3 M& r
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char *dmabufsrc1 = NULL;9 h6 W4 E h" k. R8 Q8 t) ^
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;& N1 d2 T6 a! u" t, x4 W) F0 @5 n e
static int bcnt = 8;# Q1 d4 i" n; \ p s7 {
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);! q' K2 i: P2 ~; M0 H- x$ \; g
module_param(bcnt, int, S_IRUGO);7 `. H7 `5 @( V. v8 g8 }
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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