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本帖最后由 yyj 于 2018-1-30 11:01 编辑 : h$ B' l# Y! l
- [code]EDMA sample test application
0 E: Z& L5 N: a - /*
7 G8 Q9 @$ W" w3 y8 t& d( a - * edma_test.c: q- w/ e3 L3 X [4 V
- *
, a7 C2 J# D+ R$ ~; u1 N. ~ - * brief EDMA3 Test Application% p1 J' }% I3 B) S- a, ?4 @
- *! ]% w9 w2 l1 ?' d
- * This file contains EDMA3 Test code.
- M, C9 {& w5 e - *! d K* A( [) s+ g. ?
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
/ u. ?3 ?: x2 {6 G. E S - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
* s2 D; }/ x$ b* B# s - * TO CHANGE.0 j, P7 `2 O' C+ v
- *7 R1 g: f% }: \: x8 o/ C! ]
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/. S; D! R/ ?. H2 `% Y9 q
- *+ [7 z: _; g4 `( w4 g5 v% {
- * This program is free software; you can redistribute it and/or
1 v2 t+ a! b+ B9 B - * modify it under the terms of the GNU General Public License as- @# v K3 _; X) [' w6 j1 r
- * published by the Free Software Foundation version 2.7 q P" ^3 v1 X2 I
- *
6 r! s8 ~5 I* U/ L - * This program is distributed "as is" WITHOUT ANY WARRANTY of any# u8 o n, C" `7 A! l( {5 F: m
- * kind, whether express or implied; without even the implied warranty: B- ]( x- ~$ g$ F1 L) S
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
$ p- D9 O$ \( z4 f - * GNU General Public License for more details.
4 B4 l6 H0 C. B: d/ ^( @$ u0 }" O - */
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0 g" B" ?0 I- J& s! J- #include <linux/module.h>
) S) O) E& X- v/ w8 b - #include <linux/init.h>% ~3 U6 F0 a5 ]& g5 v- m
- #include <linux/errno.h> O) g5 h4 ~" z; k
- #include <linux/types.h>5 n0 ]& c+ F1 k' |
- #include <linux/interrupt.h>
& a0 ^* `+ X9 z4 D. j - #include <asm/io.h>( t0 H, N" ~! }* J
- #include <linux/moduleparam.h>
, z$ F6 I9 K o- o, l. a - #include <linux/sysctl.h>- F! H$ L; q! Y
- #include <linux/mm.h>$ ^3 ?, w1 l5 L
- #include <linux/dma-mapping.h>5 S# c# [0 ?: [
- V3 \5 X9 r1 P. L7 p
- #include <mach/memory.h>
! I: o- F3 s1 N+ N, L" ~ - #include <mach/hardware.h>
- ]( Y, U' C) S- i7 o, L2 l - #include <mach/irqs.h>
! `+ n$ x6 ]( S5 C9 Y! x# P - #include <asm/hardware/edma.h># R( F( t6 m7 X, X
- h& P6 j$ ?6 H* ?+ ]- #undef EDMA3_DEBUG
4 Y. u- F1 M) M) E* Z - /*#define EDMA3_DEBUG*/. [0 d% a# }7 J0 e
' z3 V" C' m0 R; B- #ifdef EDMA3_DEBUG
" i' k6 x4 c/ [7 y - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)5 N, ~% i6 P2 q, s W- n# g
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
& {1 p- A4 P- r. j - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
, Q1 R. `% a: y0 n) o - #else* @% D) W+ \& C' k v( w
- #define DMA_PRINTK( x... )' _/ O/ ?# x. f) k0 z* G- s
- #define DMA_FN_IN
" [, ?3 b5 o s7 B, M8 a' f - #define DMA_FN_OUT
. ^6 F& @ \- s$ ?1 N( @6 x - #endif
1 ^' y ]( S( l6 j
' r1 z8 ?4 [# ~" o5 u- #define MAX_DMA_TRANSFER_IN_BYTES (32768)- R3 u4 U, \" M7 r2 U
- #define STATIC_SHIFT 3
4 Z7 Z5 _& D! G; W' }9 k* Z' C8 M7 C: e& ^ - #define TCINTEN_SHIFT 20
% N) s& }3 \ ?6 Y- F) l" D" H: Q8 K - #define ITCINTEN_SHIFT 212 n% i$ `/ c6 L2 U1 h$ I& P, X2 T; l
- #define TCCHEN_SHIFT 22
1 D8 l( x, \; p - #define ITCCHEN_SHIFT 23
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3 V: f( N- e' ?# f1 p) A4 ? S' ^/ M- static volatile int irqraised1 = 0;3 q4 }& S( |, _9 K( d3 G6 h& ~
- static volatile int irqraised2 = 0;0 U! ^: X8 ]1 y: ]1 s& q
- 9 }( b5 v1 C6 _% v6 t
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
# F1 ?# _: _ T( m& B4 b - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
$ U) A+ p _# ]1 q - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: T& ?) @6 m, \5 g: g/ F
& i7 o' |8 K% v- dma_addr_t dmaphyssrc1 = 0;
9 {# a& u+ ~, T9 C9 `8 R( A - dma_addr_t dmaphyssrc2 = 0; \+ L: i2 v; _! S- C" Q+ ]
- dma_addr_t dmaphysdest1 = 0;; A5 b; u; ~! n2 [. w" r/ ]
- dma_addr_t dmaphysdest2 = 0;( ]' T3 ?( u0 [5 D
- 8 S5 B- R- G) G+ k4 _1 [
- char *dmabufsrc1 = NULL;
' v5 k; J5 u! F8 s. Z - char *dmabufsrc2 = NULL;- B" r, A6 x- H
- char *dmabufdest1 = NULL;
! N ^3 Y' m3 A. g: R/ ~- [4 f - char *dmabufdest2 = NULL;' e1 _" W+ b- Y$ W5 D
. `5 c' V" l4 `$ \* y- static int acnt = 512;
0 }! y6 I) l# i& ^+ D4 q) Y- D - static int bcnt = 8;
4 ~( D0 ~+ ]# g7 P8 r4 b+ O - static int ccnt = 8;7 a- @# W2 n* @* n# r
6 d* Z. B' m% d1 p6 `1 @9 P- module_param(acnt, int, S_IRUGO);8 }2 ?* H$ ]; z) ?8 Y
- module_param(bcnt, int, S_IRUGO);
; E* N8 {: Y) p7 j/ {/ D9 \ - module_param(ccnt, int, S_IRUGO);
复制代码
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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 U9 O g; o9 D a
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。% P1 T5 } u k5 O
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。8 e4 q. x+ t0 t* J2 M6 |; p
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