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本帖最后由 yyj 于 2018-1-30 11:01 编辑
8 q8 \- i: V8 ?1 W- [code]EDMA sample test application0 k* V' C) R8 K0 J& j; z. s
- /*
6 _* K6 p6 ^# z8 |9 P: y$ @ - * edma_test.c$ _2 G4 l Y; }8 o- X. l( {8 o
- *
" I$ h3 i1 O$ z: X - * brief EDMA3 Test Application p4 U2 r, A( C! ]
- *. o+ f2 k4 j6 h; o& q( Z/ S
- * This file contains EDMA3 Test code.
# w* V! l) P6 | - *
3 m( ]( q- n$ O0 `& _! `+ u - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
$ F# u* P% I7 k& I, I8 p A& |( | - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
1 C# f: p# W( x' a# k% p" p - * TO CHANGE.
& ` i4 R0 \) ^/ }2 e - *
7 O3 P' z; U* l0 ? - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
. _2 m4 a O; T/ P5 ~# [$ N - *
8 w! p9 L. y# D% _. I0 N, F - * This program is free software; you can redistribute it and/or. r, m4 M2 C& C$ M6 q5 q
- * modify it under the terms of the GNU General Public License as8 ^2 u- { _- F0 S* W
- * published by the Free Software Foundation version 2.- T& U5 |9 E6 m$ A/ x/ D
- *
" Q3 R- R) `; c) ^3 y- q* y& E - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
J. F! U7 }6 E* S: k+ ? - * kind, whether express or implied; without even the implied warranty
3 H: e) d, G$ h& K, h* t) ]% I& d - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the& Y% B; H) ~- J
- * GNU General Public License for more details.
, I& W- ?( P% V l7 x - */
- O+ F( g/ [% ?3 \9 j' U5 {4 C - c7 |7 j) s0 T" ]
- #include <linux/module.h>8 x4 l) x' A& J7 S: ~# |# j& O9 N
- #include <linux/init.h>- |: N7 i& N( O, \9 e! W. k2 s
- #include <linux/errno.h>3 G; q& D! h) `4 k; V# u
- #include <linux/types.h>
# w8 `7 i" o! G1 f0 I5 Q$ A2 z - #include <linux/interrupt.h>
; c- t1 p4 [8 W0 T3 D% @) a5 @/ V - #include <asm/io.h>
. n- W1 k0 _7 m% A0 B' ~% @9 S1 i0 z3 B! m - #include <linux/moduleparam.h>
, B5 z6 ]5 }0 \. ]* [ - #include <linux/sysctl.h>
9 F$ P; t; c" g+ `# P, J, X4 v3 Q - #include <linux/mm.h>, i; O# M- `8 _8 E
- #include <linux/dma-mapping.h>
% {$ K- N* v! q) h! @, o6 O* P - 6 R; Z* p: T$ ]% B# t7 G
- #include <mach/memory.h>4 t% B3 [/ R! l% i
- #include <mach/hardware.h>. D+ x0 B8 ]! @+ {, {% W
- #include <mach/irqs.h>
5 @5 _5 _. }; z! M/ F4 n - #include <asm/hardware/edma.h>
$ U3 y* w% j- c, W4 z - ; y: J a5 K3 Q: D2 {& K
- #undef EDMA3_DEBUG
5 v+ L1 _2 M7 ?7 q4 | - /*#define EDMA3_DEBUG*/
& y9 |: p& V' t; t! O/ P* Y - ' ~0 R: i6 X. K8 ~6 y
- #ifdef EDMA3_DEBUG* ]$ |% ~0 H3 E O, ~" ]5 o2 }
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
8 ~1 v/ u7 h* _4 l/ B - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__); |& v& d1 ?3 Q3 a
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)2 b; q% a4 }% p; |& D4 N
- #else: R! e2 W1 z/ _
- #define DMA_PRINTK( x... )
6 u8 P( C& s( q6 F' i - #define DMA_FN_IN
7 H8 {% x% ^8 ?" H( C; I - #define DMA_FN_OUT/ e# r& d6 s$ V" Z7 q5 ~2 z
- #endif2 X7 ]5 g6 m) I! a- L
) g3 h3 F: N3 {! t( q- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
0 U* P+ G/ @2 [, l2 f7 N6 V - #define STATIC_SHIFT 3
6 w. x8 l9 v+ I# g7 X - #define TCINTEN_SHIFT 20) J) L; m7 R" p6 D7 p
- #define ITCINTEN_SHIFT 21$ l3 Q7 _* b" t9 s7 x# T- j! ^
- #define TCCHEN_SHIFT 22
# C* `% V2 H" ?3 z ~& e. ] - #define ITCCHEN_SHIFT 23$ H! J4 G' g; i6 x* h, |' {
; C8 ?# l3 I6 ^; a- v$ e- static volatile int irqraised1 = 0;7 u E2 ^" a* `# k! X' v0 L9 \& h
- static volatile int irqraised2 = 0;' g; h& Y- v$ ]: g2 A" R
- 2 @: U7 L" T0 j6 ]# }
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" I( s# M7 s( }
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% Q: r3 `: y& l4 X
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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8 y# w9 o1 ^7 l4 E0 n7 d9 @- dma_addr_t dmaphyssrc1 = 0;
/ x5 j4 \* g2 M9 a: j3 z& H - dma_addr_t dmaphyssrc2 = 0;9 E4 O% H, C$ q3 [" d$ G
- dma_addr_t dmaphysdest1 = 0;# s7 ^: Y( k% v6 y3 N+ R
- dma_addr_t dmaphysdest2 = 0;$ [1 @/ Z$ W" `
- 0 C( m9 H. V6 N" O+ W3 l6 r
- char *dmabufsrc1 = NULL;
% |; j: q1 o; k1 Y. r( E& I - char *dmabufsrc2 = NULL;
0 I& ]) x9 A8 D* W - char *dmabufdest1 = NULL;0 x" i& o2 u" l* y3 D
- char *dmabufdest2 = NULL;9 R6 O- |7 v; j
- R/ D9 K) P: X' V! l- static int acnt = 512;) `' b8 M& o. j" ~3 ?9 o6 R
- static int bcnt = 8;
3 W& m6 e2 d7 l; C. A - static int ccnt = 8;
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+ T J: t% F& Y. q- module_param(acnt, int, S_IRUGO);/ }7 G: a+ d5 N$ r) l, [
- module_param(bcnt, int, S_IRUGO);
' Y. M9 i& j5 M( R - module_param(ccnt, int, S_IRUGO);
复制代码 * D. M) v: }4 V$ y
" l5 W: [* \, B8 k6 P, p 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
* ]- N! |" w: e! ~; A; l9 G3 Yarm-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。
4 d& T: \" c+ `5 F 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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