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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/*% u2 T; ^4 g5 X O/ S
* edma_test.c3 O1 M6 z# @- D3 L
*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code., m6 ^9 Y, K0 @+ c' h7 |
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE5 M, `& e9 d5 S: J: q j' H |
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT& B, a$ ]; K1 `+ _+ e) q
* TO CHANGE.5 q5 y1 w$ T( ?+ N( A
*+ N' z- R- O* o0 B, `" `% P' U
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/5 B( h6 k6 K7 p' Y/ V, i
*+ u e( ^: h% m& J8 T; c4 K4 b
* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.! P; J. y. T; S3 i# K4 s
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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
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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. {, W) k: `5 ?" P0 _/ O
*/$ P/ U- B% E& [% k0 m2 j/ H' j
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h># u2 y7 a& Q% b2 r8 M% v& [" `
#include <linux/interrupt.h>7 i- p- _7 I2 Y8 A ]
#include <asm/io.h>
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#include <linux/moduleparam.h>5 v% M$ b) i7 Y' @: |, A
#include <linux/sysctl.h>( q! ^6 R8 i9 B/ G' g; f. M
#include <linux/mm.h>
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#include <linux/dma-mapping.h>9 j b( G4 c9 T& `6 o) U5 z! h
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#include <mach/memory.h>
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#include <mach/hardware.h>* ~2 v5 h" z. z2 D
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>9 i% r* @+ m! b' n) T% ?( U
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#undef EDMA3_DEBUG
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/*#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)! g5 m5 ]7 W$ e8 N0 L9 S9 z0 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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#else3 y% X+ x0 R; ?! ~+ Z
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT( ^- a4 w3 S/ ?0 m# ~7 u
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)4 n4 E. a% K, ?4 O, G# z
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 219 q6 ~2 W- G! N$ I3 M
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;: W* A: @# w+ H( ^) ?- S
static volatile int irqraised2 = 0;" M3 n5 q& e8 [/ {$ c4 Y# [
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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);, _5 E, N& W- W' 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;5 A4 R( q; y9 m
dma_addr_t dmaphyssrc2 = 0;6 `' A. |8 N- v" X5 _5 \9 w
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;2 t7 B( b. U. Q# p/ Q
char *dmabufsrc2 = NULL;. A" O d# G& u, i
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;% q/ N' \. g' Y
static int ccnt = 8;' q/ _( B9 s- D. T4 k
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module_param(acnt, int, S_IRUGO);) q `, |- P- l4 F
module_param(bcnt, int, S_IRUGO);$ }) n; A* D% g+ R
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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