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本帖最后由 yyj 于 2018-1-30 11:01 编辑 5 y" \! W. ?5 s7 w* Y( _
- [code]EDMA sample test application2 q4 e5 S b% J1 N8 |
- /*) s7 I+ W+ \, x7 f; o. T. |/ M; c
- * edma_test.c0 \+ i2 ]: i2 X
- ** e9 v3 l" ^- o% G! o& C+ E* @
- * brief EDMA3 Test Application
7 _, E. U/ h- ^9 G, j' { - *
' Z! z- b7 v% }, b" j8 n6 q - * This file contains EDMA3 Test code.1 x0 Q+ |: c, z7 {2 x
- *: ?6 x" O. ]* z) b4 ^) k4 Q+ S
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
]2 l0 Y4 {& T# `% F0 d; x - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
. y& N; _) a0 e, Y - * TO CHANGE.
2 F8 h s" H4 D; u3 i% C - *
* p3 K M6 A" `, j3 R - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
% N$ k! V1 o8 f - *
0 C; {2 `) V) T8 h }4 R - * This program is free software; you can redistribute it and/or
, T0 y) E0 Z1 e8 R - * modify it under the terms of the GNU General Public License as
/ {% K4 B( h! p6 X" ~. y - * published by the Free Software Foundation version 2.
- q/ v6 M1 l p5 d. O: ? - *
" F1 P1 ~: S5 e1 D$ }2 I) a - * This program is distributed "as is" WITHOUT ANY WARRANTY of any' r6 s7 ~3 r; d7 K8 p S
- * kind, whether express or implied; without even the implied warranty! [) M4 C) y5 A' ^0 V! F* {" `, w
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the; y9 m' N* f( u& L$ Q/ C& _% n0 q
- * GNU General Public License for more details.
# r/ v4 ]/ F0 w7 o3 m& B7 m - */+ s/ Q+ w$ f& z! ]
4 b4 y6 |1 D) u, P6 [, T- #include <linux/module.h>
! J% a* p+ Z1 k3 I3 y - #include <linux/init.h>
% s. P$ h% p) \( o8 V6 c& l* | - #include <linux/errno.h>
" o ~8 c z! f" I2 R9 z; M - #include <linux/types.h>& M+ L+ Y$ O( {1 q
- #include <linux/interrupt.h>! d+ \, N7 k! k
- #include <asm/io.h>
1 r$ [8 J; a6 [0 Q& [9 H. N - #include <linux/moduleparam.h>
: C) N( Q. ~4 u* x' A) M - #include <linux/sysctl.h>
( e& W; b, s% [9 p' p - #include <linux/mm.h>
7 {* \9 E% r9 X% Q - #include <linux/dma-mapping.h>2 K7 q- T4 _5 M+ N9 \
- + I3 B4 u" U/ \; ^, E
- #include <mach/memory.h>- r( L/ {* i/ x9 k% X8 n! e
- #include <mach/hardware.h>
$ N& w4 e; T! H! t8 S6 @3 Q0 v1 X - #include <mach/irqs.h>
n* k; D c; _# J. l - #include <asm/hardware/edma.h>7 q: K. ^ {2 H3 Q/ z
- @( L7 _$ X; S1 o- i9 G5 N
- #undef EDMA3_DEBUG* B. {& r+ J* n+ q d
- /*#define EDMA3_DEBUG*/
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3 M$ X' C- X2 A! C$ N" q9 s- #ifdef EDMA3_DEBUG
3 w/ o, I9 Q6 ^4 [- i! N! m - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)+ q6 n5 n F9 x( ?4 o% F8 b
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
9 m. T+ v! m( k - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
$ y/ C! x; o' `# z' { - #else
" p: \) E, w+ ^5 Y: h Y- q" G4 | - #define DMA_PRINTK( x... ). }$ ^" F& @( y+ z$ Q+ W
- #define DMA_FN_IN, Z; O6 ?8 R; d
- #define DMA_FN_OUT% d- t; Y6 K# }3 \6 a& d
- #endif
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% ^8 t! T# B. A- #define MAX_DMA_TRANSFER_IN_BYTES (32768)3 A+ I C( H$ K4 u6 [, x
- #define STATIC_SHIFT 3
# H- a' M" c; O - #define TCINTEN_SHIFT 20
) h; f4 t& d) q, z+ ? - #define ITCINTEN_SHIFT 217 t4 n/ S, o+ J+ K. t$ f
- #define TCCHEN_SHIFT 22
6 E$ G0 h9 v* X6 [3 P: h' p6 f - #define ITCCHEN_SHIFT 23 e7 Z. z, h+ f# I) z- o
- 5 J1 D" U- M# j! U: A
- static volatile int irqraised1 = 0;5 X* f) Y/ L7 d3 A. C8 d$ {0 k# F
- 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);
% n1 ]* A2 {0 ~% F - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ N" ~3 `) F: i7 H5 }! k
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
& [2 ]5 G; E- S: F6 J6 n$ K4 W - 0 D2 A, t' Z0 w1 u
- dma_addr_t dmaphyssrc1 = 0;
3 g) f G" a8 h) w8 ~, ]4 d - dma_addr_t dmaphyssrc2 = 0;
& `6 m7 o" p6 M. ^( `6 L - dma_addr_t dmaphysdest1 = 0;
: X1 K. y8 b$ D' i% ?# h - dma_addr_t dmaphysdest2 = 0;7 t0 g/ } e) t
" |+ ^+ L- T' d; |+ G) ?) I% x l. M- char *dmabufsrc1 = NULL;
0 q- F$ d1 \9 s2 h# s& g1 F - char *dmabufsrc2 = NULL;
& t0 G0 X, ?9 _% J, s - char *dmabufdest1 = NULL;
. _5 y6 | r! z+ W2 ] - char *dmabufdest2 = NULL;/ c! a, B1 F2 V* j! J0 h
: b% l- u0 `9 P0 @; t- static int acnt = 512;
6 r6 I& b; A. c' }4 @ - static int bcnt = 8;! L. e$ }3 I2 W+ ~# b+ e
- static int ccnt = 8;6 i) _3 f/ k5 r. D- \
! O; i5 B" r) ?, A- module_param(acnt, int, S_IRUGO);
# S& a( i( v* I* v - module_param(bcnt, int, S_IRUGO);: ?( {3 D- W2 D/ e, o' E# j# n
- module_param(ccnt, int, S_IRUGO);
复制代码 - | {% s9 a( |5 T
$ T9 g: @: `' @2 e# B8 ~ 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- t2 ?* y) f8 E1 F) t
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。
+ | Y2 |. w3 c6 S3 v' R1 m 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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