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本帖最后由 yyj 于 2018-1-30 11:01 编辑 . u$ j6 C. a, }8 y- I3 F, k: d0 t
- [code]EDMA sample test application
4 {9 P- W! K! E/ q& q% F - /* r4 F" P9 S W5 b9 X3 k% r
- * edma_test.c- E, K6 \( |$ ?0 C' V! v* b% x
- *1 ~( C) }3 `) W# ^" X
- * brief EDMA3 Test Application
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3 Z- q/ |1 R/ F& q* Y! I* \ - * This file contains EDMA3 Test code.
; ^! Z7 g) E% U' g: z - *
8 n- c2 m0 q$ y/ C4 W - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
$ j; _* e7 H, {7 x/ G" | - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT8 U: F+ O! g2 w! c2 D7 n
- * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/. t) M6 p) X( Q. [3 s, [* A
- * B( G9 h! L* p' q( S L: x
- * This program is free software; you can redistribute it and/or7 |+ ?* o. S4 R" a: d, @" v
- * modify it under the terms of the GNU General Public License as
$ `: @6 Y V0 |. b - * published by the Free Software Foundation version 2.7 m& K B+ a5 {' k. N
- *5 P6 H+ r: H& J- A9 F8 ^( W$ H
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any$ T- |) R$ }* _( J
- * kind, whether express or implied; without even the implied warranty: x: I. F) T, S9 Q% ~9 B+ I
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
0 r8 D' \$ q6 b& l* | - * GNU General Public License for more details.
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- #include <linux/module.h>
% d% _+ S( m# M( s - #include <linux/init.h>
7 V; t4 s; `5 ? - #include <linux/errno.h>
% ?1 j/ |( w6 |& d r% K$ n. n# W! ~ - #include <linux/types.h>
1 X$ i* H) Z4 G/ \* a - #include <linux/interrupt.h>* Q v# h# P, o% A1 y9 p7 R. v
- #include <asm/io.h>
m1 v- E; M: @: G5 l! ? - #include <linux/moduleparam.h>, j5 v3 I, y# J7 o( d
- #include <linux/sysctl.h>
. h0 ^) W! n* i7 ?7 C" D, w - #include <linux/mm.h>
" `! Q. N$ W8 t5 v5 G6 Q - #include <linux/dma-mapping.h>; t6 A- G/ V* B- `
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- #include <mach/memory.h>. i. N8 ^0 o- d
- #include <mach/hardware.h>
0 F8 }5 ^8 \2 Q- r* L" X - #include <mach/irqs.h>' t1 e3 z, h/ W6 Q* G" h, {* H
- #include <asm/hardware/edma.h>& L' n; m& U9 P& ]; i8 I
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- #undef EDMA3_DEBUG
; a6 W0 p! R" e5 c8 `! s) R) j - /*#define EDMA3_DEBUG*/$ e! E" i: m4 b6 F2 t
* p% R ?, N$ c Y5 ^" \# ~1 V) m- #ifdef EDMA3_DEBUG, E5 p& t2 h& d2 X& _" P( x- ?
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
& X r" z' {8 v% m( [" r! _. H - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)5 ~# r; E, x; B' s9 F+ P7 F
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)5 J( C. t) z" A7 y
- #else
* q& d, [% d! ]( T, O - #define DMA_PRINTK( x... ) ?' I; G+ ]# z# i5 N
- #define DMA_FN_IN
' m% T: X4 }" Q: { - #define DMA_FN_OUT# n R& t9 j5 m' P" C
- #endif! C* O, j# v, a7 [! k4 |5 C+ ?
- 2 S, B! ]- `5 o+ [0 J
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
- R( a# {- ]1 P - #define STATIC_SHIFT 3
2 N' F, m4 g* S: U0 W% ?" b8 @ - #define TCINTEN_SHIFT 20
, w' p4 j& V6 Y* N. K8 Z& ? - #define ITCINTEN_SHIFT 21
0 [" }' H9 B! i+ L& L - #define TCCHEN_SHIFT 22
9 O7 K7 t0 r6 G0 C. y6 R) d; k& j - #define ITCCHEN_SHIFT 23
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: j+ }( M& i/ n- G- static volatile int irqraised1 = 0;
+ v& [$ i! h: F$ A# [5 t - static volatile int irqraised2 = 0;
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5 V# n; U! D4 p3 C8 m- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
& s& I. D8 `; I P% B6 G - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- r4 d' @/ Q7 I u. G! r
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* ?4 Q) ]8 G2 `5 d
4 E$ j/ ?9 M g8 j) J% I" R, K- dma_addr_t dmaphyssrc1 = 0;
X9 ^+ k2 j& Q) n1 s& ~ - dma_addr_t dmaphyssrc2 = 0;
' C/ ^2 e! X9 S" E - dma_addr_t dmaphysdest1 = 0;/ z9 |1 m: R- r% C Y y' w4 b5 q6 p
- dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;' x) O3 d7 Z. K4 ?( d9 q! }0 T
- char *dmabufsrc2 = NULL;# X, j- z- }% p& |9 v
- char *dmabufdest1 = NULL;
8 t1 W) r4 d) y0 z - char *dmabufdest2 = NULL;* o: f7 ?4 W$ @4 \% B
% \9 L/ g9 c( T1 @* b6 i2 C- static int acnt = 512;
" R$ v( h8 h) {& f2 g( [ - static int bcnt = 8;
, d/ ?- ]5 n* Q/ E - static int ccnt = 8;
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! ]5 k$ v3 I4 `6 [- module_param(acnt, int, S_IRUGO);
( {1 G2 V, a. {, @6 Q. e - module_param(bcnt, int, S_IRUGO); V3 b% {! W& F+ U# @$ Y
- 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
# i- R! i) i) y6 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。, y" H2 Q+ `/ ^5 ~
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。- I9 v1 v9 z% C9 @0 N3 \7 D
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