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 application8 V: f2 L3 X. }1 i& }+ O
/*( M3 [, J( j: }6 w1 x C
* edma_test.c$ r, z' j) k* l6 H, @! r
*
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* brief EDMA3 Test Application+ _4 \; R# {) }7 B; ]
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* This file contains EDMA3 Test code." o! {: Q; h0 D- O
*/ ?5 c: D$ W) ?1 Y& E! N( b: X0 V
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE$ g* i* `+ t' j7 C$ t* u- `
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.8 F3 e0 i" j5 H5 i, a& }+ q- B8 @
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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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 as5 Q+ Y3 A) j% t/ a+ p; s
* published by the Free Software Foundation version 2.8 q7 a4 H% I8 @! I, o2 }0 G
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any$ }, q' _+ ~ c+ a, f
* kind, whether express or implied; without even the implied warranty( X7 }- W/ Z, l% u8 y5 \ ?7 }6 C, e
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.( }" I7 ^! K6 n. z1 s$ _2 {) e
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#include <linux/module.h>$ s; \' d1 J& M
#include <linux/init.h>8 h. H) S. u# ~$ _6 X
#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>
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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>+ }0 v# l3 L' l* C1 R: r
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#include <mach/memory.h>3 i' |/ l& R+ d, O# H
#include <mach/hardware.h>
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#include <mach/irqs.h>& }5 V% E+ A5 j2 D3 h( X
#include <asm/hardware/edma.h>+ K: d! O& D" ^0 L4 u$ a# D( v
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG/ @3 Q4 [) S- u( G3 r
#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__)3 t5 E8 ]) |+ h" p" @! w0 A# x( {
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else+ C9 r# ]5 F3 y
#define DMA_PRINTK( x... )
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#define DMA_FN_IN$ a' C. b" U+ ?) s c# I0 {
#define DMA_FN_OUT
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#endif" }3 [& A7 I$ t8 q& \
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)/ a5 d3 x @3 C4 F2 C' v8 f
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22
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#define ITCCHEN_SHIFT 230 e- F% K9 Q. P5 O5 }
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static volatile int irqraised1 = 0;8 @, }5 Z9 |3 h2 _. {) P
static volatile int irqraised2 = 0;! S0 A) U& W8 A: a
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 i, Y7 J9 Z' z
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, g# P9 i' K* p0 F8 K6 v
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); a, Y7 L/ X" n$ U
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;. _- J; N$ U. W3 i
dma_addr_t dmaphysdest1 = 0;! c: L+ Z0 ?, j2 r# r
dma_addr_t dmaphysdest2 = 0; r( e/ x0 M* k
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;& H- w- d3 A; o% L$ l, B2 d$ d
char *dmabufdest2 = NULL;& ~/ L' V! g1 H& p& A, P
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;! C8 }4 X% M0 `" C# U
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module_param(acnt, int, S_IRUGO);: H8 e7 c ]5 x) e
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