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 application0 ]2 O) B# S* |/ Y9 A$ L
/*: H& S- H8 w; I9 |5 X
* edma_test.c
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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*. [% W8 H3 i( S5 l' o" ~% _8 T% ?
* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE& ]: }5 q0 S3 R+ \; b
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT0 T' x. p6 V* w0 `
* TO CHANGE.' K, u2 \2 Z; U$ r! x6 r% M: |( T* L
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*/ B( u. J7 @+ c
* This program is free software; you can redistribute it and/or% o' {6 @. _& h- {/ h( U' f6 ^6 U
* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*! [, d, S( s- \1 V6 @6 j; n7 {- k
* This program is distributed "as is" WITHOUT ANY WARRANTY of any. [5 Z/ P, f ]9 }: ^
* kind, whether express or implied; without even the implied warranty5 N8 Y+ m. D; A; {
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the: e9 G; ~; Y# q2 K. x/ Y+ o
* GNU General Public License for more details.
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#include <linux/module.h>& U1 I* p6 m% {: N* D' o& p7 I
#include <linux/init.h>8 ]2 n# n- \4 c% p. n( I, D
#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>* X0 L5 ^/ W- x* a, p
#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>) ]; x* m n- A O5 U' D9 N+ O5 v8 j
#include <linux/dma-mapping.h>4 p$ F: Q: b+ Q8 t0 M& @
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#include <mach/memory.h>
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#include <mach/hardware.h>/ u. a2 [& I& `# I" q* V" b8 E
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG. s6 ^' E/ X) F: G W- w
/*#define EDMA3_DEBUG*/ k/ ?9 g8 a: U# N- B0 [( N
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)( e9 p1 F9 o) g% H
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)- R( H) r) I: D6 M
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else' }1 J5 W2 A! k) y0 d6 G* c9 {9 N) ?
#define DMA_PRINTK( x... )) H, H: C$ a5 Z8 E9 |
#define DMA_FN_IN8 d6 ~) ~$ a0 Y$ d5 {5 H
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)' b+ r. m5 U+ _- v9 k; \9 J
#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 23+ [1 b# V, r! D+ e* a& M5 B# K
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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);- Z! C4 B; g, O( E/ x8 g' @0 G6 \
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- q( L& x# o y6 ~
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, H- U( D6 ^' A, R
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dma_addr_t dmaphyssrc1 = 0;$ d. a2 q' S7 u: e
dma_addr_t dmaphyssrc2 = 0;3 `# d+ B# P) c. t1 w2 U2 }: O+ g) V
dma_addr_t dmaphysdest1 = 0;3 Y4 J! ^0 L/ r5 N, V
dma_addr_t dmaphysdest2 = 0;" d6 [) i. J7 X) g* U- h# V( V' d c
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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;* }' z0 U! M5 z& x5 k8 t- i
static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);/ w6 U. c7 R/ f0 T+ F+ k. J! ~
module_param(bcnt, int, S_IRUGO);5 r1 q1 e1 S- ^/ W% \+ H8 q
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