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本帖最后由 yyj 于 2018-1-30 11:01 编辑 2 Q8 b* H6 F9 Q) T, v
- [code]EDMA sample test application
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- * edma_test.c" J! L6 O6 Z- r3 \
- *0 |; b8 x: o7 {4 b
- * brief EDMA3 Test Application/ H' U8 {- T6 r8 R
- *' s: j% m* t5 `# N7 @ w* ?& j
- * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
6 N z5 s. H* t. r - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT7 t& r5 J9 k! ]6 e
- * TO CHANGE.
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; M2 c0 R' F& }4 d6 G0 L: F8 B - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/% U- t6 x& m/ A
- *" m$ `. B! [8 t$ P6 P
- * This program is free software; you can redistribute it and/or+ l5 F+ ^! H+ G+ z( T3 F6 z
- * modify it under the terms of the GNU General Public License as- J" e& y1 O$ W6 f& D: z# }: J
- * published by the Free Software Foundation version 2." z( }: X2 d. |3 j9 b4 V1 w% m4 ~
- *. Q/ ~( t0 {1 R- n2 I
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
) B: l: M+ [! W) @0 @! m& E) v1 E - * kind, whether express or implied; without even the implied warranty- u* b( O' X4 l, f: H: y4 z6 q
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
0 I+ [, o, s8 d Z! q5 k& Q& P - * GNU General Public License for more details.
, |. A$ W2 |4 M* f# O! o - */
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- #include <linux/module.h>1 M$ J6 [- U* @5 d, ?+ Z4 _' e N
- #include <linux/init.h>& L. l. y( X0 J1 D9 {/ K
- #include <linux/errno.h>
4 ?. R3 K2 m1 \% x. ` - #include <linux/types.h>3 b, z+ C2 {+ r, |) h9 |: Z
- #include <linux/interrupt.h>! V [9 q8 t$ y! B; ]
- #include <asm/io.h>" b7 Y0 U- S i7 ]& V
- #include <linux/moduleparam.h>
, N' l$ }) t# ]. x/ T4 A1 Y - #include <linux/sysctl.h>
) Q6 W! S- F4 \. i9 G2 M7 x - #include <linux/mm.h>
! v/ S$ Q5 N( D3 p6 y4 a - #include <linux/dma-mapping.h>
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7 p+ R$ v& [. C& {3 V; L- #include <mach/memory.h>0 D4 t# M E) r3 g
- #include <mach/hardware.h>0 N" D+ P% ^9 g8 m4 F, Z
- #include <mach/irqs.h>8 ~/ L* A0 J" ?; w2 b- ]1 g" v' O
- #include <asm/hardware/edma.h>
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1 I. D0 g* [0 n% F7 G- #undef EDMA3_DEBUG
. Q {' a# m3 q' T: O - /*#define EDMA3_DEBUG*// @) ]2 J G, m" D
- 2 H' C& @" w }& E! D: i
- #ifdef EDMA3_DEBUG
+ O! G1 p9 L" z. @% C/ M - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
9 V( e# }: I8 t$ {# N) p - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__) n- H5 H3 d8 L9 N/ W4 O2 n
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)( N3 ~8 H: E" |) `- O7 p! [# E, f
- #else) ~, O4 ~6 E" c/ C1 ]( h1 I) _ H3 E# J
- #define DMA_PRINTK( x... )
0 e2 U3 S( k* | - #define DMA_FN_IN8 A0 k; a# l, F5 W) Q) O% W# _: C
- #define DMA_FN_OUT
* P( Q8 h, A9 ~0 K% @ - #endif+ i2 ^$ o6 D/ P' ^
$ r3 M, G7 j; u- #define MAX_DMA_TRANSFER_IN_BYTES (32768)0 J* v3 t1 @" o' P' G. T
- #define STATIC_SHIFT 3
: I& C) L0 v& Y# h - #define TCINTEN_SHIFT 203 m- l0 s! i; w( `
- #define ITCINTEN_SHIFT 21
8 T- V+ X2 N$ E3 B - #define TCCHEN_SHIFT 22$ l4 ^$ J5 {" ]$ v
- #define ITCCHEN_SHIFT 23' w w7 l/ m7 B- J8 o
1 S! h0 a1 Z$ i) \% i5 ^# O- static volatile int irqraised1 = 0;6 Q) M B' i n. W7 ]
- 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);% b! s# x6 }( q0 m# v, e! W1 K
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);1 m7 H% k5 e* C! x `
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 I; s. y: \+ {! N
8 a( g0 A/ h0 P& G( B4 [. f- dma_addr_t dmaphyssrc1 = 0;: \- l# t: p1 x r
- dma_addr_t dmaphyssrc2 = 0;
' S. C6 d: W( u/ A8 j - dma_addr_t dmaphysdest1 = 0;
/ t9 v6 v, ~) R - dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;+ \: e% S, a: `* g0 |
- char *dmabufsrc2 = NULL;3 U% Q% R7 t, z! m1 I3 h
- char *dmabufdest1 = NULL;: ^4 H; _: ]0 a
- char *dmabufdest2 = NULL;5 `( q/ L0 Q, `% |: @, ^5 M
. c% f# k0 ]+ f: ~- static int acnt = 512;& s2 |! a& `7 F% H9 C
- static int bcnt = 8;
8 K. K! G ~7 A8 o4 ?9 s2 \ - static int ccnt = 8;3 o0 N9 Y, z; k, p$ ` E/ Y
8 g* R, t: F5 K1 B; m1 }2 a- module_param(acnt, int, S_IRUGO);* e/ K7 W1 R! C+ O) Q/ L
- module_param(bcnt, int, S_IRUGO);
" p, h" R1 |$ Z - module_param(ccnt, int, S_IRUGO);
复制代码 ( k! n4 e5 z1 u9 N: u6 A
( r# |3 @+ B# O+ 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
# F/ A# T8 [# f7 R/ I) Darm-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。7 T6 G; _9 R7 X
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。. j- U) p4 w) e# O
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