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本帖最后由 yyj 于 2018-1-30 11:01 编辑 / q( k% b6 W! u
- [code]EDMA sample test application
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- * edma_test.c
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- * brief EDMA3 Test Application
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6 R! t6 T! z# ?+ S - * This file contains EDMA3 Test code.' X# G2 V6 i1 E" n4 Y
- *
% x# a5 [, v0 x% g) G - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE: }% r3 Z, _9 {7 f8 p
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT: Y" {, i! R* @; z. s* e1 K3 F
- * TO CHANGE." U6 ~+ O( g' z5 i6 T5 h. W5 ^: `
- *# F- A" s" E8 R
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/# `" H( w5 ~: y0 \
- *- C, s4 B+ ~1 y' K6 `
- * This program is free software; you can redistribute it and/or
8 d' h! J) M# t; q - * modify it under the terms of the GNU General Public License as
7 e0 T" e1 O5 b. O/ D - * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
I0 K0 H( y& h% x& k" A% g - * kind, whether express or implied; without even the implied warranty% z' T- t8 f8 A: p
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
/ ?: F" V, O3 z" e - * GNU General Public License for more details.
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- #include <linux/module.h>
) ^! G" _" j- p+ k2 q; [: O - #include <linux/init.h>
& E. ?& j7 O9 u1 ? - #include <linux/errno.h>
8 s9 V$ m2 ^# G) H0 | - #include <linux/types.h>
. p! x3 d! M9 z+ L4 [; Y9 V, a9 f - #include <linux/interrupt.h>
5 N3 t0 ^: U g. B5 f! S( O - #include <asm/io.h>
5 {. P+ K; J, } E - #include <linux/moduleparam.h>4 l9 t4 ]# l0 x7 a! i
- #include <linux/sysctl.h>
) c0 m9 o" {' f, j - #include <linux/mm.h>
9 v7 P1 m" [6 J- x( \$ V* T8 b - #include <linux/dma-mapping.h>
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- #include <mach/memory.h>1 D6 T: D; u! x
- #include <mach/hardware.h>/ y" Y0 |4 h6 f8 j ?$ m
- #include <mach/irqs.h>+ t0 V: g3 P$ |4 W7 U6 T" X
- #include <asm/hardware/edma.h>
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3 K% p8 {9 N+ k! C4 e d/ z- #undef EDMA3_DEBUG" ^9 B3 K3 A) ^/ \( k+ y
- /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG
0 y- @ s- @0 C- @3 ~- b - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
: I+ ]% p( r. C* X. A# T - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__). W& F' f" l7 Z7 G0 l6 c0 e% `
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
/ `# v7 X' {, i- E' z" V+ { - #else
! P, ^- P p# K8 B" p9 K - #define DMA_PRINTK( x... )
' h. P' J; p3 G, F6 m - #define DMA_FN_IN
3 P! ?9 k# m+ p) G9 I: Z - #define DMA_FN_OUT! i! V9 {7 J3 P; h
- #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
7 o. c4 O; X$ f! e, O- L - #define STATIC_SHIFT 3 p' W) w; U: k
- #define TCINTEN_SHIFT 20
/ Z" j" ^8 G2 `% {/ p2 N' w - #define ITCINTEN_SHIFT 21
) d j- G1 q* l# q( K7 t: ~5 [( k - #define TCCHEN_SHIFT 22
+ R- N8 f2 p0 C! F& V! ~) b - #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0; p1 Q& k# n5 G) W" B: |" ?
- static volatile int irqraised2 = 0;5 n r0 e# S$ S6 x0 i2 h. k# S
3 F: g1 \8 ^) t5 H" S- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
$ u* [. s: b" Y0 x - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
. C! b0 V, A* }" [7 a - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. ^8 Q9 c0 x4 \# d' K
- / `3 D& P0 N3 M) N% F, l
- dma_addr_t dmaphyssrc1 = 0;
% |' B% s) w5 L - dma_addr_t dmaphyssrc2 = 0;
$ k" c5 j% w6 Z, c. h5 z3 W - dma_addr_t dmaphysdest1 = 0;( t+ r, N+ F0 E7 q( y) x( h: q
- dma_addr_t dmaphysdest2 = 0;* K. |5 ]/ G: F+ J& b
; I( H9 {& n1 C+ a- char *dmabufsrc1 = NULL; A7 X9 W& I `% L, V5 T5 q
- char *dmabufsrc2 = NULL;
) K1 {2 {6 s2 i+ `/ H/ }9 ] - char *dmabufdest1 = NULL;# Q w, t/ B* O0 R) R; L; Q! d
- char *dmabufdest2 = NULL;
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1 O' ]- m8 s# |, m4 }% H) @$ }- p- static int acnt = 512;
5 z6 K) x2 t3 k - static int bcnt = 8;4 a+ u" N# F( }% N9 ^% ^
- static int ccnt = 8;
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$ i' d5 O9 E6 o: G7 w- module_param(acnt, int, S_IRUGO);& M) W1 w" ?0 a0 I" F8 m* ? `
- module_param(bcnt, int, S_IRUGO);& t/ ?8 Q' L4 p: h5 F
- 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
* H* L! ~: @: \' p5 {6 p, xarm-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。
3 `; X/ u( T8 Z7 `1 n% V- d 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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