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$ M9 y3 c& e2 y- s* P
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* edma_test.c
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* brief EDMA3 Test Application/ D7 Z% n1 R: w7 v$ t) x
*
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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! G2 \/ i) B; `
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT! | O7 C0 U8 A* G; A* ~( i
* TO CHANGE.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/8 g: ~2 s3 Y1 [( O A& e# g
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* 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 2.2 z+ Q" p8 i: [+ A/ e
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any% S+ S0 X/ U+ M% ?0 |6 B5 U/ d
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the& v$ J% _0 |, L7 h8 D
* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>) `2 W v! D0 O) H) y0 M
#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>
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#include <linux/sysctl.h>
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#include <linux/mm.h>+ A' p' {$ X& M6 ?( Z/ G: w
#include <linux/dma-mapping.h>
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#include <mach/memory.h>
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#include <mach/hardware.h>
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#include <mach/irqs.h>' _0 k# }- e" R' O2 ^8 l$ e
#include <asm/hardware/edma.h>0 {) Q/ D& r7 ^# W" w4 @. H$ @
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/6 x) N+ O' T3 s# {* v4 N
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#ifdef EDMA3_DEBUG0 {2 Y. R1 C4 s8 U4 v" X: d! ^
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS), f" C, ~5 `- o' 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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#else( w0 p& H( s5 C" g# h& s
#define DMA_PRINTK( x... )- V# J8 a0 A8 S* |- v7 v
#define DMA_FN_IN& y# y6 E% z" l. f
#define DMA_FN_OUT/ H4 B% v8 T2 _# R" K+ b0 \
#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) Y9 M- l0 V, w
#define ITCINTEN_SHIFT 21. Y% ~* T' ?" u9 W) _ }$ c2 v% b
#define TCCHEN_SHIFT 22! r% w, k" L, X& s
#define ITCCHEN_SHIFT 237 f+ h3 `% m. t% U+ i1 M) d$ O6 Z
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static volatile int irqraised1 = 0;; r1 q/ _7 |9 d1 ^
static volatile int irqraised2 = 0;6 X- N# {6 _2 b7 l- b* F
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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);8 W2 ]6 ~4 l. ~* d3 T
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;0 `* |) L; r$ ?# G4 s
dma_addr_t dmaphysdest1 = 0;4 @ P, Y" A9 J# O9 M. |0 q* ^! A
dma_addr_t dmaphysdest2 = 0;$ b' E+ H$ H. h( L
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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;9 `" V: L( h5 a
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static int acnt = 512;% b0 E) A. F K( Z% T Z, u E1 m J
static int bcnt = 8;
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static int ccnt = 8;; B! T; ]9 _4 R5 A
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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