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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* edma_test.c4 @$ ^$ U. `/ T& ^
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* brief EDMA3 Test Application3 N; w" h6 K \+ |
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* This file contains EDMA3 Test code.( f, t3 M5 O M% Y' k
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE3 k" f# Y' n# Z- ~ ?
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT R {) q( P- j2 w* h
* TO CHANGE.
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/* b- g% P3 \: _* K- M
*
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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 as1 f" i" I) ^2 P' v, x3 ]5 x
* published by the Free Software Foundation version 2.* K5 ^( l4 R* D! V4 `
*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any( e& f7 D. R) v# J
* kind, whether express or implied; without even the implied warranty3 M6 v9 W& o& ]
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the0 z% k( k$ x. X" d; K, ~" X$ k
* GNU General Public License for more details.2 [1 M0 L" p6 @8 |% O1 a+ a, ^
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#include <linux/module.h>
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#include <linux/init.h>- e' R: m( f7 c8 O' k! I
#include <linux/errno.h>
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#include <linux/types.h>7 l" g7 g3 E- i: `# D! Q
#include <linux/interrupt.h>& \8 Q2 _% C0 g, A. B; K# k! T
#include <asm/io.h>
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#include <linux/moduleparam.h>
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#include <linux/sysctl.h>, @! v- C) [- {2 }6 E6 E' J
#include <linux/mm.h> z9 G6 [3 `1 \6 o
#include <linux/dma-mapping.h>
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#include <mach/memory.h>* G: ~3 G, E. S6 F2 J0 o
#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_DEBUG0 B, h4 B( v f" i6 R1 u
/*#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)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__) w# A7 {- `" d
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)5 T: H8 _* S s0 j
#else! [8 k; u- l0 j
#define DMA_PRINTK( x... )
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#define DMA_FN_IN, x/ y% Y8 L" C, v9 m5 c3 ]% A
#define DMA_FN_OUT- d5 D6 j* w8 Z) ]; I4 |1 `3 ?6 n5 V
#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3. F8 k2 _. Z, N$ W! [: \$ K5 P
#define TCINTEN_SHIFT 20% Y; r/ N; l0 E
#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 224 b& _+ |2 \ b; u, v' Y
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;+ M' s9 `6 E% x) p* b
static volatile int irqraised2 = 0;; x2 e1 b/ D# U. P" q- E' q$ a& L g
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ S" p! c6 o+ ^( Q& j
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);4 p( i, L* l$ h k# m: c
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;" b# o; l. s* t8 K( J g7 J7 R+ s
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;5 S* R5 |- i/ D2 a1 h# c, |
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char *dmabufsrc1 = NULL;+ i$ V/ I+ K' \
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;" c1 f6 S g: U% \- F7 w
char *dmabufdest2 = NULL;/ W% t4 D! }7 f9 e
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static int acnt = 512;
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static int bcnt = 8;, t) ~- }% B6 T6 O" O+ {
static int ccnt = 8; E) Q4 @% \' b% M/ X% M
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);: P5 u3 H4 e; ~2 k% X5 J, _
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