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本帖最后由 yyj 于 2018-1-30 11:01 编辑 % l" k5 | R6 F* y6 {9 Q
- [code]EDMA sample test application
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t% d, f; u" q- x8 K$ N# Z8 W - * edma_test.c
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- * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.6 |7 N! X1 V# x% H1 d) r
- *- H/ J. t1 i- \3 o
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
* r0 J5 A' J9 H* k4 N - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT/ t( g$ C2 @" {* w3 P. p3 R* G' p
- * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com// U' Z4 _ ~" Q7 V4 R1 E; [6 v
- ** q/ `+ _- x6 N; x: Z: f
- * This program is free software; you can redistribute it and/or
6 T3 R+ X5 p5 d7 k" S - * modify it under the terms of the GNU General Public License as
8 [9 A) y A% w - * published by the Free Software Foundation version 2., y5 q; D z* a$ ~! D" C5 q4 T
- *$ b& r. I- \) \$ i% d
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any$ I5 G# Q6 \1 l2 b. k( V
- * kind, whether express or implied; without even the implied warranty+ s. Y3 P: j* j2 c2 K/ @# I' U
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5 m N. w% A7 c2 }% q - * GNU General Public License for more details.$ f5 X( ~! R5 s
- */
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$ z/ X2 N" `% U; N$ V8 |5 U* \- #include <linux/module.h>. v0 N5 P" w( s4 F7 {) }
- #include <linux/init.h>
# {8 ~6 O9 J3 F4 s+ q. x6 Y/ [4 u - #include <linux/errno.h>, J3 D/ S$ A" p4 n* D" j
- #include <linux/types.h>
# W2 ]7 r1 ~ u% Q- ?6 B - #include <linux/interrupt.h>
7 N/ I0 a, C5 F - #include <asm/io.h>
- X* A- T z/ P2 b: z4 d - #include <linux/moduleparam.h>* o; @0 B$ q% m5 L2 ~
- #include <linux/sysctl.h>, x* t8 M; T1 f& u0 W. V8 i; T
- #include <linux/mm.h>
/ P& D+ s, v& E$ Q2 \* k8 l* \ - #include <linux/dma-mapping.h>* V1 \ ^) M/ M) E z$ c' F) e3 l
) S- F6 ~. e, y# l- #include <mach/memory.h>
! \* t( j) C6 l; \6 P! e - #include <mach/hardware.h>- P, C0 d! P- O, i8 h# w
- #include <mach/irqs.h>4 W0 v" k1 h6 H% i! @
- #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG
9 e/ ^& P9 h- I! v/ u& K, M3 G3 @5 f - /*#define EDMA3_DEBUG*/. S/ e7 L! \' s5 |: ?- U
- 3 b9 b- ` x% H
- #ifdef EDMA3_DEBUG: w7 Q% ^* c& t/ s! q. o5 o. {3 s
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
) c- O- e, H7 p* B- M r3 [& ^ - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
3 J; O+ `8 _0 [) X - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)" a' Y( f( x6 \& K
- #else2 t6 C) j1 }5 l6 p# X
- #define DMA_PRINTK( x... )
/ W6 G+ O6 c5 [6 i3 [ - #define DMA_FN_IN+ Y+ ^5 W: {8 H/ I
- #define DMA_FN_OUT: n# H0 ?( z5 ^4 D. A( R) @
- #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)" N4 j& [# C$ H
- #define STATIC_SHIFT 3
0 p1 J1 _* c h - #define TCINTEN_SHIFT 20
. }5 `" I* g9 K+ U; u9 V, b6 i. H ] - #define ITCINTEN_SHIFT 21/ ~! p! D2 i7 g% s! q
- #define TCCHEN_SHIFT 22" z8 y, u2 v& W" k) v1 k
- #define ITCCHEN_SHIFT 23+ G* w" z6 ]0 U( e$ z/ F$ C! T* {" p; i
7 Q8 Y; l- f) C4 C+ X- static volatile int irqraised1 = 0;2 r' t6 o9 ^0 O! {
- static volatile int irqraised2 = 0;
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% m( W) o8 ?: q2 D- Q+ _- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
: `6 d3 \7 w9 @* D - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);8 g9 }' ~4 ? f# X1 l/ j$ s
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: h2 e9 y" k; G& ]1 T1 p
- - k$ @0 T$ F0 \* R$ ]
- dma_addr_t dmaphyssrc1 = 0;- M- D+ N: M/ p
- dma_addr_t dmaphyssrc2 = 0;
1 u- l2 g4 P9 d1 { T% P - dma_addr_t dmaphysdest1 = 0;
* I1 [5 I/ c- I3 q- e8 M - dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;
" `$ A7 T8 d( ^ - char *dmabufsrc2 = NULL;; ?; A$ H9 ] h4 X
- char *dmabufdest1 = NULL;
2 u4 o4 Z1 F* n$ m5 } y - char *dmabufdest2 = NULL;, F5 y, V+ }! Y2 G/ N5 i
- 3 C* _; z! X f1 |, `0 y: x
- static int acnt = 512;) P1 z6 n% O7 W& T5 m
- static int bcnt = 8;# w. X4 e) m7 [. J5 [, ~; ]
- static int ccnt = 8;' c% F7 _* f5 o
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- module_param(acnt, int, S_IRUGO);
& t) b, a! ~/ P - module_param(bcnt, int, S_IRUGO);
. R6 L! v+ g' V - module_param(ccnt, int, S_IRUGO);
复制代码 ' v: f; b1 e3 j2 N& j3 j! V* J
6 E4 r7 W1 p9 j3 E0 B& D; ?7 D 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1 u/ ^1 U, Q: A- D1 [; x# z7 m5 p# [
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。
R- C+ b4 o( z" G& n% q 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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