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本帖最后由 yyj 于 2018-1-30 11:01 编辑 ' w& n2 V, m% ], B. s" m0 _
- [code]EDMA sample test application
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% `$ F5 {, ^4 N+ f - * edma_test.c
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- * brief EDMA3 Test Application
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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
. m& d4 }8 r% w" `$ ?$ J - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
) x: i( Q, ]0 w - * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/, k( t3 i3 t, H) l: X$ {5 }
- *4 S( f. U$ Q F) \, Z. B
- * This program is free software; you can redistribute it and/or! S8 x3 z5 a3 g% _/ P' J1 L
- * modify it under the terms of the GNU General Public License as& d3 f8 m2 ^9 w! o
- * published by the Free Software Foundation version 2.9 m9 P; Z/ N, f7 U7 k: |) Z2 \2 R
- *; b0 b0 T% |0 ?0 w$ O
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any; o7 Z4 ^3 B! e$ F, t" I
- * kind, whether express or implied; without even the implied warranty
5 z) \; v8 ` d+ G6 a - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- q- E) V2 |6 d% F2 m - * GNU General Public License for more details.* Q; H% g7 L+ f# W: \: f4 V
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- #include <linux/module.h>
* t$ `( h3 d& | - #include <linux/init.h> r# Q8 K% L% X( Y; ~# m
- #include <linux/errno.h># f! l( L8 V3 f6 j# B
- #include <linux/types.h>
, k F+ R# A' ] - #include <linux/interrupt.h>
* u- o+ [/ e8 O( ?1 B - #include <asm/io.h>
8 N w% }+ `+ e; V3 b - #include <linux/moduleparam.h>
: U: U7 P# n5 D3 o- }; S - #include <linux/sysctl.h>( E A" e" L m4 t2 U: \
- #include <linux/mm.h>- @" z' _5 G( {1 Q0 `
- #include <linux/dma-mapping.h>
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- #include <mach/memory.h>
/ ?4 E6 C- M' q, ~4 K2 c- j# } - #include <mach/hardware.h>
: v- R* v/ t, I7 p/ ^! W% V - #include <mach/irqs.h>' K7 T$ n/ k& ^+ G1 @$ d3 O. i
- #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG
5 r! H. j2 c9 f; H( P) G - /*#define EDMA3_DEBUG*/6 ^$ {2 m! J0 P6 q3 r
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- #ifdef EDMA3_DEBUG: C6 @ k2 `3 Y
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)* I, P# t( m' g a1 s
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)# s: y A: z1 }' I. k
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
# O3 p% z7 {$ N4 y7 y - #else
# ^! X. e4 c1 g3 H: n - #define DMA_PRINTK( x... ); `' ?# m. ^' C$ R# H
- #define DMA_FN_IN9 ~5 @: U- t# e+ ?
- #define DMA_FN_OUT
% F, L% T" Z" m - #endif# x4 M$ _' F' n' W2 b
/ O* ]& R5 M) U4 p$ O/ \- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
5 d% N0 C# l. c) I6 P - #define STATIC_SHIFT 3
+ Q2 w) Z J2 _# R1 r$ K8 P - #define TCINTEN_SHIFT 20
, r( O! {8 m8 a4 p+ Q* [, E0 k - #define ITCINTEN_SHIFT 21
2 e( `# H. o% i0 ?' M5 \+ j - #define TCCHEN_SHIFT 22
# n# ]$ {( K) P* C# n" | - #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;
u# B% |$ Y8 B8 M2 K: c - static volatile int irqraised2 = 0; i# a" f) |+ x2 U8 N
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) z' Y) e) m% b: F! L6 w& L( G' T. a6 M( j
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);7 n- Z5 K, s- Y1 d) E0 L
- 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;
/ y% G' Q+ L8 f% x1 \3 ~/ m4 G - dma_addr_t dmaphyssrc2 = 0;
; a2 c. w# @, s+ ^+ A - dma_addr_t dmaphysdest1 = 0; ?8 {: N6 a% y( B/ d; S3 w' V3 o
- dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;
( U; U% x- h' G* K; w4 ^9 ]/ Y- i - char *dmabufsrc2 = NULL;
+ A {' [/ W( }+ M T( ~9 @2 f( S - char *dmabufdest1 = NULL;
! }2 ?7 I; g( L: U3 |. q2 f& K - char *dmabufdest2 = NULL;3 M' _! ~/ F' E7 c
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- static int acnt = 512;
" h4 f( l5 [% y - static int bcnt = 8;
$ ^+ [: A* T6 w: V) V - static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);* e! {5 D5 v4 P, R$ p
- module_param(bcnt, int, S_IRUGO);: X" B) ^: k0 c( q; z8 F% r
- module_param(ccnt, int, S_IRUGO);
复制代码
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. S6 @& @& b5 ~/ ?. ?3 E 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
' k1 `$ f" _$ Oarm-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。7 i) o; ?% A/ ^% i O
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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