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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/*5 u4 |4 ^1 c# u8 Q- z; h: D
* edma_test.c
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*$ R2 W/ H& ` F p3 z* T0 q* `1 g8 O
* brief EDMA3 Test Application! k3 I1 a8 Y. z5 c) c& R. H
*
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* This file contains EDMA3 Test code.
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*
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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.; Q& v: t2 w% X7 G* }7 ~
*
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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, `8 K4 b; r1 U( P6 x0 t
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.7 \3 P! @( T$ ]1 h# ^4 j0 [* g9 w
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any6 _" \, r) V/ V# H
* kind, whether express or implied; without even the implied warranty$ V4 {, Z7 k# M6 S4 g6 ?3 m
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the+ R+ O+ B) }* s+ ~2 S& ] L# ~
* GNU General Public License for more details.. K1 U5 c4 {; x* k
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#include <linux/module.h>7 o* `( P2 N% B# F9 x* B6 f
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>4 h5 q3 Y% F* v
#include <linux/interrupt.h>! I/ v0 l* C6 h# }3 t" b
#include <asm/io.h>7 e! G. x8 g9 l. K, f* F
#include <linux/moduleparam.h>
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#include <linux/sysctl.h>+ j0 j1 j) @3 v% j
#include <linux/mm.h>
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#include <linux/dma-mapping.h>( J& } C. g4 _' @$ m3 j8 M
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#include <mach/memory.h>9 b2 D7 }$ ` Y y
#include <mach/hardware.h># d; n! Z" h0 y- y* e) G4 ^
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG; l5 H& t# R# `0 L6 r6 G
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG) {: n1 Q# p5 g& z$ o
#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... ); S- i. b. y. g \. J+ t
#define DMA_FN_IN. n) ?! \2 `3 m3 E2 T
#define DMA_FN_OUT
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#endif
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#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" L/ w9 O- x# R. [
#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);( v* W1 s$ w, |* n& f
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, x' U% Z, d/ V$ y" D6 ~; r
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;
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char *dmabufsrc1 = NULL;8 e. \" n# w! t3 W, S" L, P
char *dmabufsrc2 = NULL;( w4 B# I0 q( V9 R1 C6 w! u8 h `
char *dmabufdest1 = NULL;2 `0 C* h. y" M: M/ {; m9 v% U$ W
char *dmabufdest2 = NULL;
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static int acnt = 512;0 z4 i% W; X; I; F# O5 Y/ K
static int bcnt = 8;5 K! Z9 @8 ^+ s) e( M% r5 u/ l
static int ccnt = 8;# t/ I! j# E9 V4 l+ a1 f
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module_param(acnt, int, S_IRUGO);+ k: ^1 L! U) h; i5 l
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