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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/*" s3 C" t4 h8 B/ ~
* edma_test.c
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*8 {7 R. S X/ b7 t1 v1 T
* brief EDMA3 Test Application
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* This file contains EDMA3 Test code.3 w+ n# s/ r H; T0 d c% G
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE8 @& _% Y" x5 v% t6 k- d2 l
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.$ @. K2 {5 t' N+ z% o2 v# {
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/+ y' {! r; h: D& \' p+ f
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* This program is free software; you can redistribute it and/or9 z- E8 @& Y2 ]" ?. X) j
* modify it under the terms of the GNU General Public License as' a$ Y- C% j& P" b
* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any }) c/ }7 ?6 b
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the, m+ S1 H7 i' `& K. p5 [4 ^
* GNU General Public License for more details.
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#include <linux/module.h>% _3 K0 @( J4 y6 |$ D1 J
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>+ F. z0 }; M+ L) o7 e6 I! _4 w
#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>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <mach/memory.h>$ N* j( Y0 j$ O
#include <mach/hardware.h>' M+ A- e/ O, m. O/ f7 m
#include <mach/irqs.h>2 I6 i1 f$ q! T' Y$ \7 v
#include <asm/hardware/edma.h># K* G- c: ^* h f. A
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#undef EDMA3_DEBUG7 z, _, U( P5 Y' y
/*#define EDMA3_DEBUG*/+ c; g5 M: M; t& H# C, P
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#ifdef EDMA3_DEBUG7 M0 L6 [) s3 {9 r, | v% C
#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__)1 @+ K* s& [* \0 E) C0 h
#else# B5 _. R8 T; y! n# X1 J6 a0 G+ p
#define DMA_PRINTK( x... )6 M6 k$ p7 A* X. X+ }" U* U
#define DMA_FN_IN7 ]( H; Y1 h9 w/ \" q' x6 K. k
#define DMA_FN_OUT) Z) j! R2 D, U7 l/ i) J/ {+ V6 s
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3( l' k' ]4 M" h: f d# N7 A, ^
#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 215 h1 V- f: m. M* C; o- [
#define TCCHEN_SHIFT 228 i' K7 ?$ A9 s: C. c
#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);7 X5 g( v9 C! U
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 D9 K7 @4 V7 s2 ~
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 g" a t! l! V: N/ v8 s5 u
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0; J1 R9 `; Z! m5 i
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char *dmabufsrc1 = NULL;6 L1 G$ a6 w, X1 \3 X" x
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;
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static int bcnt = 8;/ ?# ?3 {& P* B4 ~
static int ccnt = 8;6 K9 l5 l( U0 i( }
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module_param(acnt, int, S_IRUGO);8 i7 d) |" j. Z+ c* T
module_param(bcnt, int, S_IRUGO);; _$ u+ x( V9 I/ c M
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