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本帖最后由 yyj 于 2018-1-30 11:01 编辑 0 x$ F6 e/ r" y' H( _
- [code]EDMA sample test application
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- * edma_test.c H! W) g- A6 Z! l2 m! D, H
- *5 q4 k" E1 q8 `
- * brief EDMA3 Test Application2 x0 n7 t7 w/ h
- *
( J) ]. k. ~7 Z3 c" U, {% Y - * This file contains EDMA3 Test code.
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; f+ a2 X5 j# t- X ^; e4 g5 R4 C - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE I9 E2 R* j- w; g0 U [- i
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT A7 X3 X4 j+ f# J! s8 F# j
- * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com// O: G3 W( G' h i
- */ F; i2 z) B7 e' I8 B/ s" M
- * This program is free software; you can redistribute it and/or) ]* [- e. {- \7 K$ t
- * modify it under the terms of the GNU General Public License as3 s1 Q& Y; m$ N$ N
- * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
; u7 a% b1 t7 t4 W* Q: w - * kind, whether express or implied; without even the implied warranty
$ H. {" Y& T: C+ s+ u0 i - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the& }. r# c7 V/ Y/ S, ~
- * GNU General Public License for more details.
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- #include <linux/module.h>
. |1 R8 C0 t6 b, c/ N; S - #include <linux/init.h>
% m# U' I3 D2 } - #include <linux/errno.h>
# }" e+ M C/ m$ B! {6 _% s2 B - #include <linux/types.h>0 c z0 j+ T7 Q; B
- #include <linux/interrupt.h>8 m& ?; r) B! _6 h2 L# X3 F
- #include <asm/io.h>& [% H$ t! H8 X9 t; s* J! h
- #include <linux/moduleparam.h>3 r2 Q+ X: J! ^0 a
- #include <linux/sysctl.h>6 x1 L/ \: G8 @* ^& {# O
- #include <linux/mm.h>
?1 E# q4 x, Z" U; j% b - #include <linux/dma-mapping.h>
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! I6 h: d$ w' u/ {, _) k3 _9 C- #include <mach/memory.h>
" G' R# ]6 B3 J3 Y9 v3 I9 i - #include <mach/hardware.h>9 x; [$ {( x; I- d1 v- h
- #include <mach/irqs.h>7 i2 f9 c3 ]" v% M. o& I% t
- #include <asm/hardware/edma.h>; L2 d$ e9 g: X/ ]! |% I t$ `! e: R
Z, v" {/ H, N) }- #undef EDMA3_DEBUG1 [$ b0 b+ I" L+ Q6 E: R
- /*#define EDMA3_DEBUG*/
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& d1 {( @5 @) U' {- #ifdef EDMA3_DEBUG. |8 A7 u7 x$ w+ O
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)! R R) v; _) n4 h% j1 o& B
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)8 R# e5 O' K; E5 o; F) O
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
3 p U$ X, q. N# ~( s9 m4 j# X - #else
% `3 o$ I' b) q - #define DMA_PRINTK( x... )5 R5 R" p' `# B. P$ t% s2 i/ J
- #define DMA_FN_IN& F6 x" t/ X3 A( B/ a
- #define DMA_FN_OUT2 l1 |8 h/ M; m8 j
- #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)7 W5 ?8 u$ w7 i3 e5 T5 m5 K4 M
- #define STATIC_SHIFT 3
& g3 K* X+ P& h - #define TCINTEN_SHIFT 20
; M% _% c( h* x1 z, a - #define ITCINTEN_SHIFT 21
. w% O- ~: V" k4 ^7 J) @ - #define TCCHEN_SHIFT 22
, X4 `) l3 h& d8 r - #define ITCCHEN_SHIFT 23
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6 W& r) g+ h# f {9 U- static volatile int irqraised1 = 0;1 o, A( q4 y1 Z3 ^
- 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);
0 i$ ^, A F. [; d7 r2 q - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
* @; ^1 a3 t K5 ^6 N; H/ Q3 k: s& M - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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! M- I% @# j( X' w5 W m- dma_addr_t dmaphyssrc1 = 0;4 I# v ~' o2 U& U' R% V
- dma_addr_t dmaphyssrc2 = 0;
1 A5 Y j7 k$ Z& d% m - dma_addr_t dmaphysdest1 = 0;+ f7 q! a2 A& o2 S0 Z0 D
- dma_addr_t dmaphysdest2 = 0;
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: @1 T1 d% ^: ^! [7 j$ h- char *dmabufsrc1 = NULL;
2 u. Y# m3 B/ Z - char *dmabufsrc2 = NULL; m. r K$ Y f. }; m
- char *dmabufdest1 = NULL;
- _3 c! K: W& \4 C/ E7 o) @6 X7 c - char *dmabufdest2 = NULL;
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- static int acnt = 512;
& }0 a! `, `. c* |+ ]. d - static int bcnt = 8;/ O( U; w# F8 G; }* Z! P" ^' c# ]0 L
- static int ccnt = 8;: y7 s+ g8 A+ `0 C" H* W
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- module_param(acnt, int, S_IRUGO);
0 O$ \% g% J+ n+ q( @ - module_param(bcnt, int, S_IRUGO);
6 A- J. b7 v- R; m, Q - module_param(ccnt, int, S_IRUGO);
复制代码 : G2 @ I, Z. w) Z: L" _7 I+ V
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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
( f, B# V! s- ]! A; V# h, 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。' o' `% i% O! @4 A3 `
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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