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本帖最后由 yyj 于 2018-1-30 11:01 编辑 : |, v) m7 \& N, ^; W4 S& i
- [code]EDMA sample test application( x7 _# D7 G- w* a
- /*6 D- n* k& K! _- x$ C. }
- * edma_test.c
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( x, q/ q- J4 M0 G8 ~ - * brief EDMA3 Test Application, u3 A+ \% D, r" r0 y% r
- *8 G9 y' u0 o& R# w: w
- * This file contains EDMA3 Test code.
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W" R7 s+ X( t: I+ N: p' z W4 y - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
4 E- e* g" H3 k# b - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
0 H; ^2 h1 c; `5 I( Y) t - * TO CHANGE.# Z" u5 k# X b# n+ d: T
- *. ^+ }% \# v3 U0 b9 {0 u
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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- * This program is free software; you can redistribute it and/or, [. c4 B( S: w# R3 _
- * modify it under the terms of the GNU General Public License as( l6 N1 s8 q d0 k
- * published by the Free Software Foundation version 2.9 `" a4 s, ~4 C4 Y* q
- *3 G( @, c; i8 ?: N
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any n9 O6 T6 ?7 D$ t4 }0 q
- * kind, whether express or implied; without even the implied warranty* M( {- \4 G' v/ |+ o
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 x6 o$ E& V, V' d, i2 U. m - * GNU General Public License for more details.# `7 _: C0 `% \ K: @
- */
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- #include <linux/module.h>
: Z" d" j+ n! |3 s/ J - #include <linux/init.h>6 }1 }; O/ f+ s, {$ k
- #include <linux/errno.h>
( X+ b: [# V5 K3 [: } - #include <linux/types.h>5 ^) Z% _2 p" O) [& B. n
- #include <linux/interrupt.h>
6 _7 T4 o% i, x - #include <asm/io.h>
k8 m3 U D d9 m) V( m+ Y - #include <linux/moduleparam.h>
! f1 M- Z: c& D# N - #include <linux/sysctl.h>- s1 [- `2 _7 q$ h! @( n+ |
- #include <linux/mm.h>
! T5 W; g u6 I% Y - #include <linux/dma-mapping.h>4 v2 ~+ P5 d- I& G/ q
- # z s0 K% x0 _3 S ?2 D \
- #include <mach/memory.h>! h+ m& ]# b* w) l+ o- @1 \
- #include <mach/hardware.h>/ F0 A. @- N5 Q5 i$ F
- #include <mach/irqs.h>
* ^9 R0 S8 c6 q Z - #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG8 r! m" X( B( f9 I# _$ l. I2 M
- /*#define EDMA3_DEBUG*/
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: W: O4 R- \ p5 p( d8 L- #ifdef EDMA3_DEBUG. P6 {5 a- q. B$ s; o5 C
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)- t; L" h' D6 B1 h& L% Q, ~
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
1 c* ^" i4 u3 b: V4 B - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)% C. W7 E4 Y1 i; e0 ~: l, T
- #else
# @3 ~$ `2 X2 ^% h m - #define DMA_PRINTK( x... )
: v# R+ _ Y. C& a' S+ u( k - #define DMA_FN_IN
, e5 K5 Z) f" Q( P1 w - #define DMA_FN_OUT" T7 q( b$ r2 q% ]
- #endif c, D8 P9 n9 S6 X
- ( \8 O) M& f1 Y/ e! p
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
1 r+ W# Q d$ L E8 P8 X% N$ K/ @ - #define STATIC_SHIFT 3) C9 R% ~7 B; k. F
- #define TCINTEN_SHIFT 20
' ? i- R) |' s0 D6 e \" E - #define ITCINTEN_SHIFT 21
0 R7 N* u2 I2 k& F8 { - #define TCCHEN_SHIFT 225 L9 v% h& }6 Z7 }4 j3 L5 d
- #define ITCCHEN_SHIFT 23# ^5 w: V# p5 V* l6 k6 o0 N
7 L- E C0 B) c. Q& S9 J- static volatile int irqraised1 = 0;
0 p) @6 [ R) v - static volatile int irqraised2 = 0;7 W% P( m- @* F4 ^- e
- ! o& ]# c! P. s' }" ?
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. T6 S0 V' Z4 s( \
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. x9 Z" a5 {, E; [- Z) M
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);/ q7 U! Y: z, A& k1 }1 I) P( \! T
- 6 X6 G$ }% \# F( ~
- dma_addr_t dmaphyssrc1 = 0;
1 i0 F% e# }) Y! Y - dma_addr_t dmaphyssrc2 = 0;1 w7 X, L7 z; u+ K
- dma_addr_t dmaphysdest1 = 0;' l2 L+ d3 Q9 F: `
- dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;
7 e' d. P# l I6 N. X n& P - char *dmabufsrc2 = NULL;
c' }: O; ^/ r& L - char *dmabufdest1 = NULL;7 Z+ l& m6 v- z7 I: }% h7 O
- char *dmabufdest2 = NULL;
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( D; [ z. j0 V6 I7 A( a; r- static int acnt = 512;( i( J. ^9 r: e1 i
- static int bcnt = 8;& j# e) T6 L8 g1 C
- static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);' t8 C- r, \5 O" r+ j' e
- module_param(bcnt, int, S_IRUGO);
6 j. w( n( R c8 } - 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
& J4 I, q0 l; i/ K1 Uarm-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。9 {4 o& e0 M! G( U0 R. p/ F
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。! `, T3 v8 M" j0 V8 u' V& c
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