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 application7 c$ j. w2 Y7 @ N7 e. U" S
/*
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* edma_test.c/ W q# h* L4 [1 U) [* H0 C
*
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* brief EDMA3 Test Application6 O j8 ]# Q, w3 y9 x
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* This file contains EDMA3 Test code.- z) b- C. V8 w* R5 V
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE% c9 s1 O; A) _ ^9 U8 X5 h: ^
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.. G, Z; ]3 `9 m2 ^
*
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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/or0 n$ r7 _, P! a
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.* @+ [( Y# C! j! `1 K
*+ m2 v& W6 r; `" j& T7 e3 Z1 v
* This program is distributed "as is" WITHOUT ANY WARRANTY of any3 t" N% M5 ^& j+ ^: q5 I
* kind, whether express or implied; without even the implied warranty8 ], r- D4 _$ d# J- Z- k
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ V. [1 u9 M$ ?
* GNU General Public License for more details.* g- J6 t- N" |/ A: o' k% L3 |
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>, f& {7 D2 b: T6 t8 [) J% j0 V
#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>) U0 X* K3 T; r7 x4 L! [$ P! O* E
#include <linux/sysctl.h>* q2 L. \) z. a& `% x! h
#include <linux/mm.h>
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#include <linux/dma-mapping.h>) S/ I' D6 a9 ^4 T# p5 b1 a
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#include <mach/memory.h>
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#include <mach/hardware.h>1 N* y& E" _' _* h" _2 {
#include <mach/irqs.h>, z0 `; U. U" r' C4 S5 M/ M4 m R
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG; C; \( J. M% C: l
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG. O; R; h0 u& \9 r- \* R6 U0 h: _
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)! I0 T6 ~. U g. o
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else$ ] y: s& C: ^$ O( K. x# Z/ f
#define DMA_PRINTK( x... )5 P1 }, g: _ y+ A" g
#define DMA_FN_IN
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#define DMA_FN_OUT
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#endif" V' Z+ S& \) ]& J
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#define MAX_DMA_TRANSFER_IN_BYTES (32768): A+ y+ ~: l4 n& Y! o! s: x. {
#define STATIC_SHIFT 3& b2 @9 x8 A" {
#define TCINTEN_SHIFT 205 w, B, m. ?/ O2 y/ K# x
#define ITCINTEN_SHIFT 21+ q- l! P4 b0 Q9 n$ x
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;7 z% Q' n2 o, M
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);* c$ V6 I, Y" m- g% m8 n
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( I. u R! J6 l7 z( I+ T* P3 X
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;( ~1 f4 Z5 Q! b+ F: Z: e
dma_addr_t dmaphysdest1 = 0;. y% v9 H7 H! b
dma_addr_t dmaphysdest2 = 0;+ R( ^. A) ]8 z7 C. |) V
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;8 Q. A' U& M, B% r, r
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;4 H' K8 U2 V' \2 z$ b4 K$ O8 B
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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