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 application4 [ ]" b& m' o; H
/*9 z1 V6 v1 z. q5 f, e4 I( W4 |
* edma_test.c9 I" y0 y; F1 d q) X! ]. v/ o
*( x, \6 Z7 @- S2 ]
* brief EDMA3 Test Application
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*3 x! o( q* b) p9 [9 R
* This file contains EDMA3 Test code.# u9 }& H. V% i5 x
*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE% Y6 X$ M1 z) I- ]6 A$ I
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT X/ Q- s" U$ t8 |( [' z
* TO CHANGE.6 t& K! m/ j$ U# R; u+ r
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*/ R+ Z, G1 @9 D9 ` ~5 O+ S$ }& G
* 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% A9 ?8 k2 c1 d, S9 q/ k5 Z' \5 T
* published by the Free Software Foundation version 2.
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*% B X: w( |* X4 c1 x
* This program is distributed "as is" WITHOUT ANY WARRANTY of any5 l# ?* ~' |, o& ~. x. a* 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' l$ n9 R$ a# J
* GNU General Public License for more details.; q# m4 T& t" }- c& D
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#include <linux/module.h> |' s: g) V- Z" \' X9 m
#include <linux/init.h>5 ~8 N# e- u% B. l2 F
#include <linux/errno.h>
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#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>7 O. j1 c& x1 c& E1 }' {
#include <linux/sysctl.h>9 W! \0 z( i% V3 w0 [2 {
#include <linux/mm.h># R1 c/ _8 J! d, _) {
#include <linux/dma-mapping.h>6 J" t- [3 {$ `# a! k: w2 w9 v
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#include <mach/memory.h>( S; `; y; s y1 D4 X2 l) t7 t6 L
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG/ S0 n6 [& [% \- g, P# g
/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG" c7 l! k8 \" H0 d' j) T7 V: E
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)/ x& c }2 K: ]% Z( V, m2 R
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)/ p5 a/ r+ \% u
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else; o5 |3 R0 I8 T7 J) E5 k0 X
#define DMA_PRINTK( x... )4 P% J+ W% L9 e7 q4 J6 u0 z
#define DMA_FN_IN B. w3 j( w u' R; A2 `+ d
#define DMA_FN_OUT/ `' R$ f7 O) {* E
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)* e ?* [3 \/ {9 F- V
#define STATIC_SHIFT 3- r' [& P: o* q( w( h% Q( q$ ] J
#define TCINTEN_SHIFT 20* O9 h: v3 r: x
#define ITCINTEN_SHIFT 21- O5 K- Z" o) ~) E/ U
#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 231 O1 w& @* D2 N: n, x6 d
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;; B9 v7 T8 y( G/ C- ~2 x$ o' r
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ Q' {; m& A5 ]* B1 z5 M# ^ t9 }# t1 [
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);; }' V8 s: }. O% c) c1 J
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dma_addr_t dmaphyssrc1 = 0;7 n2 \4 V0 P0 {9 D4 w
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;. I& m& a) j$ |9 o
dma_addr_t dmaphysdest2 = 0;
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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;
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static int acnt = 512;' h. G9 C2 z/ P! s* J1 A
static int bcnt = 8;5 E0 W* e9 C0 w/ L- c: n' N
static int ccnt = 8;
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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