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, ~7 S6 x" \+ k! W. @
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* edma_test.c
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* brief EDMA3 Test Application" \( I9 T% c& H: F* n4 ^: K$ l' }( e
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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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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/& f, @. `9 v6 ]1 K4 ~# o
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* This program is free software; you can redistribute it and/or3 ` Q& e5 ]6 X# _5 }! a' c
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.& u1 r( B% J( Z2 q
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any3 y& e4 o' @# V
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.: A# d: [3 S. l: J
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#include <linux/module.h>
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#include <linux/init.h>, ?2 R# W9 M! v( P* M
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>' v6 z* y: b/ ^4 c. [
#include <asm/io.h>) }: G H9 n+ i
#include <linux/moduleparam.h>! y: M* v" ]* }, s
#include <linux/sysctl.h>
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#include <linux/mm.h>4 y0 N6 P0 c6 d* c# a' K
#include <linux/dma-mapping.h>! W; @5 t; {8 m( G4 G
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#include <mach/memory.h>
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#include <mach/hardware.h>: J; H: | e- U4 {! J( U6 _
#include <mach/irqs.h>* h6 q! T& _% @, f$ o& w. Q w
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG) o0 b% y8 X' o4 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) D" T, S; F7 z/ r' Z. @+ g! u% P
#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 S# g+ f U* V. K* g
#define DMA_PRINTK( x... )
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#define DMA_FN_IN. @+ x) T$ ]) }) m8 |
#define DMA_FN_OUT7 m0 x6 ?* b4 F x: r' e& K
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 35 p2 G# n- e/ ?" G) D, j" {7 @
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22: z7 G7 L. L! q- |2 y; J
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;0 s3 W% s& R* \/ A) }
static volatile int irqraised2 = 0;: } |) N, o+ @; q2 r# Q) ^- W
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: Y% m, h3 ]1 `' R, V3 t1 F
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);$ k: N9 C: y# E* I" {
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;+ h; q+ Y( y+ B4 {4 D8 p
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;6 m: { } f+ y0 {$ ]! {7 p J
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);. g- B# T7 }: A0 ?2 g
module_param(bcnt, int, S_IRUGO);6 l5 ?( G: G0 l9 Y) d' j5 U
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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