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本帖最后由 yyj 于 2018-1-30 11:01 编辑
0 F1 P3 }; X# l/ T- [code]EDMA sample test application' j0 H# H S& q) D- i, @+ B$ `
- /*; U- q0 y# r6 r* x( ^; ^% u$ h
- * edma_test.c* ^9 a3 s! q8 n! F! L
- *' h" @: p1 R, Z: C
- * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.( l+ Z* D2 ^1 M. b6 I, R9 o# C2 `! B
- *$ B x/ i ~% m6 r' f/ s; ~) K! n
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
, ]) _' r5 E5 Y" k: I1 l - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
% W" C$ g- ^! u) A9 h0 | - * TO CHANGE.+ L. a Q8 o1 d5 {7 f
- *
, e/ j/ J, A/ f/ E8 d - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/# V9 {3 u2 j% ]
- *
4 O; Z" m+ |+ z, q6 J) k* v' } - * This program is free software; you can redistribute it and/or
( J$ q; n* V1 p+ R1 z* P - * modify it under the terms of the GNU General Public License as
1 p3 Q" i$ j& ?0 f: u - * published by the Free Software Foundation version 2.
) X0 q* B1 x' o3 D - *# h6 s0 U" Y. h
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
1 D K1 a7 ]& b! Y7 o* Z - * kind, whether express or implied; without even the implied warranty
& b- {' e( o# i } - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the$ A9 [# h" @8 m0 l- T! v0 Q
- * GNU General Public License for more details.
, ^( ]4 f* v9 W1 O8 i+ \& v - */
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- #include <linux/module.h>
0 b' p& ~: U. p) [2 W$ v3 {4 a - #include <linux/init.h>4 U) b# i. l' l# W8 o& X, k; P
- #include <linux/errno.h>
! J1 B2 Z0 F1 i& C$ X, |8 v - #include <linux/types.h>
$ d2 K5 B& a& o - #include <linux/interrupt.h>( u2 d: [! I+ {- S, t
- #include <asm/io.h>: a9 R" E9 s9 N6 n2 y% M. z
- #include <linux/moduleparam.h>
9 @2 U) ]# o. }( T - #include <linux/sysctl.h>. l- u- ~+ s# C: r8 \ _! k2 ?
- #include <linux/mm.h>4 U% g3 J. w% q6 l
- #include <linux/dma-mapping.h>4 _- V* G6 F. C
3 Y2 g7 J2 o1 b. X! ^) v+ V- #include <mach/memory.h>: j% a. X1 e# z0 V& y9 d
- #include <mach/hardware.h>
1 W* K$ W( l) X4 E: D# S. p - #include <mach/irqs.h>
9 Z! p9 K# i, t1 ?3 L - #include <asm/hardware/edma.h>* l7 C4 G7 g+ T4 ?2 d4 L3 @
- 7 @1 e' _' N" L3 x4 {7 H- D
- #undef EDMA3_DEBUG
- W2 J3 t0 Q. B4 ]' ^. D: O* ?; R - /*#define EDMA3_DEBUG*/- y1 K4 j6 I7 d9 Z
- : z+ X8 B- p, ?: N( w# @( V
- #ifdef EDMA3_DEBUG
7 o" ^; {+ `7 C' i - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)8 N5 k7 ^& h/ }3 i
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
- [' k. T8 K# k6 y, S; _ - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
- f# O) y" i' V4 H - #else
+ ~0 I! M( F' r i - #define DMA_PRINTK( x... ) ~) h$ x5 L1 D; u$ t3 L
- #define DMA_FN_IN$ g4 H0 f; ?( \1 s# u0 e5 S
- #define DMA_FN_OUT
. Q' f/ \7 w0 X: P, { - #endif6 t8 B0 e+ W. J! v8 t0 v
- & F- N7 \. ?1 J* L% P N
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
7 c% O9 H; [' ^# ?1 J/ b) o - #define STATIC_SHIFT 39 r$ T9 x0 \& h" z% ~/ v' k/ i4 L
- #define TCINTEN_SHIFT 20
% K& X; J$ r. z3 }. W; d) p - #define ITCINTEN_SHIFT 21
% ~+ A! D7 n0 k1 C5 S3 j, [% Q - #define TCCHEN_SHIFT 22
2 a, G! e) d6 M. b; B; B - #define ITCCHEN_SHIFT 238 d* y& O* q/ w$ p# f R
- $ a" {7 e1 p9 }1 I' O0 k0 E% _
- static volatile int irqraised1 = 0;; N; A1 ^6 P6 e
- 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);! }5 E( a* Y. F) w
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
4 E; m6 {+ E0 m9 Q1 V - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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# V T8 G# G- E- dma_addr_t dmaphyssrc1 = 0;& X8 f6 ~$ d1 {1 P: F* B
- dma_addr_t dmaphyssrc2 = 0;
8 Z8 b! P) N: a, y3 S- b - dma_addr_t dmaphysdest1 = 0;
2 T* S0 o% x2 q8 @: t& P - dma_addr_t dmaphysdest2 = 0;9 I7 E: V7 n0 \) e9 I
- 1 p- K; i) S# {- a1 P$ c
- char *dmabufsrc1 = NULL;3 H) X9 ~' j8 t) k
- char *dmabufsrc2 = NULL;* G- q0 V$ C$ D- H
- char *dmabufdest1 = NULL;3 E. C! ]# m: i& m1 X7 |
- char *dmabufdest2 = NULL;1 a: Y1 Y% ]1 o" P
m: E6 R6 R+ D3 j) U1 Y- static int acnt = 512;; x; {/ {. R1 f
- static int bcnt = 8;
% U/ K5 @& y; Y - static int ccnt = 8;
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' ]+ Y" G' u7 B6 i9 B( b- module_param(acnt, int, S_IRUGO);7 v' P3 m0 P( @8 }5 @
- module_param(bcnt, int, S_IRUGO);0 T! c) ]3 H7 u3 `. ]3 y/ h8 V
- module_param(ccnt, int, S_IRUGO);
复制代码 , o- \# }8 r" d- V
% u/ J* |7 P5 U* I' O 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0 F; E9 t% f/ {$ K! W% R6 c- X
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。4 ?4 \9 k7 z _& T+ r9 F" G
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。3 u" H2 a, i) l: ?0 l4 G
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