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本帖最后由 yyj 于 2018-1-30 11:01 编辑 4 E5 b% N) i# k3 R0 l0 [
- [code]EDMA sample test application# f: Z; S. q/ {8 d
- /*+ I2 z, P# A8 [ V0 [& b, y, o9 G
- * edma_test.c
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- * brief EDMA3 Test Application3 E& ^6 c0 }+ A; E' T
- *8 j% O. S) O/ H) k+ M, U# M% x; a( B
- * This file contains EDMA3 Test code.1 c+ h, B0 R% o; k S
- *
' o, m! K# J8 T- r - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
: W7 C$ R$ y" e2 N6 _ - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
! ]. ?" R( v/ _% D* ]) x - * TO CHANGE.9 a* L2 M" q7 P: ?
- *
* T: e/ ^" R j! o - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/* f1 X' i6 @' R, X% C2 M
- *
6 x: V1 T9 `( P. y - * This program is free software; you can redistribute it and/or: H( v% K* Q- \- i5 _. \6 T" h" z
- * modify it under the terms of the GNU General Public License as9 G- m: m% J9 E/ W2 j
- * published by the Free Software Foundation version 2.) G6 ~* y2 L7 O$ ]5 x' S& ?
- *+ J, T! l& d7 ~
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
& z/ y, q. X5 Q5 A6 n( m3 A - * kind, whether express or implied; without even the implied warranty
0 z, c3 d A* S0 r( H - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
. k, N1 c- z M* B' T, S - * GNU General Public License for more details.5 Q& R+ b- ~" b6 [2 [$ o3 _
- */" M/ Q8 l3 Y3 R' o" W
- ! q1 I: i8 I! j5 _) {7 q
- #include <linux/module.h>( i1 X4 q' G- D
- #include <linux/init.h>8 S- L& F; H% F# B, {/ k1 }
- #include <linux/errno.h>6 n" J3 e6 }- n/ K2 _8 u1 a/ I4 |
- #include <linux/types.h>, S* q/ @) }! s- i6 o& L
- #include <linux/interrupt.h> h; j, _, q* R8 ?# Q
- #include <asm/io.h>* {* j$ Q2 S, W- F" D% F" c6 q
- #include <linux/moduleparam.h>
" C, `2 D9 r+ F$ g/ f8 k! S* r - #include <linux/sysctl.h>. P `5 c4 h# s6 b$ [" F
- #include <linux/mm.h>8 {4 b1 y2 ]) y4 a: t# Z
- #include <linux/dma-mapping.h>
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7 o0 k: v$ F0 y7 R* b/ o9 p- #include <mach/memory.h>3 f5 k) _! g+ }3 i3 O/ S9 i. o% n
- #include <mach/hardware.h>7 M) N2 S9 |# m* J3 p) i; N: }! s. Z
- #include <mach/irqs.h>
. M0 @6 s6 T- [6 }+ z - #include <asm/hardware/edma.h>2 _! o3 s5 {3 H# {9 {
$ ^- L& q' J9 v' w, H- #undef EDMA3_DEBUG
" j7 b" o5 `& m- S' ]5 f - /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG8 w$ d9 O$ P } S F, P6 G
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)% Q+ f2 @0 e( Y' j' g
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)8 W3 K+ h5 A6 ^" f1 b5 ?3 }
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)+ G, a2 `( c* ~" f
- #else
D4 A! Q' B: F q7 q" x* k: g5 n: e - #define DMA_PRINTK( x... )$ I$ i1 [1 {: I' R1 f( U. N
- #define DMA_FN_IN
" \8 b+ H% B' `8 |! r% o$ u - #define DMA_FN_OUT8 T! q, z& v* p- |8 W! J5 t2 `. P
- #endif. J7 s/ j2 X( d5 j1 z$ m6 O
- & t' ^9 m$ l* o m+ E+ `, e$ |
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
8 s. u6 ?4 p; q3 ` - #define STATIC_SHIFT 3
! K1 t! z7 H% J4 y2 `3 N% b3 u3 K - #define TCINTEN_SHIFT 20
& M; }# R- t2 b6 T( Y0 |4 ~ - #define ITCINTEN_SHIFT 21
Z3 p8 \* x4 h( H3 l( J3 z# w - #define TCCHEN_SHIFT 22
9 R$ _" Z5 l! l- q4 P - #define ITCCHEN_SHIFT 23
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6 G8 e2 k- n' t9 V, f; O- static volatile int irqraised1 = 0;
. Y( `; Q& R$ e2 f# {4 I5 h/ A - static volatile int irqraised2 = 0;$ y6 } o! @4 N
( w, i1 d5 P `. s5 A0 E- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
' q4 t6 c. f4 r) c- D - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
5 Z1 L+ S6 z' }( F - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 B, O, ^2 u/ T4 @3 B3 q1 W3 g
- $ k* H5 c' s5 k8 ~+ Q
- dma_addr_t dmaphyssrc1 = 0;8 Q* h' J% }2 {' W- l
- dma_addr_t dmaphyssrc2 = 0;6 i/ n( f/ A2 C. c% u5 S1 g
- dma_addr_t dmaphysdest1 = 0;& r5 B! d6 j: D0 _5 p& {: H$ @
- dma_addr_t dmaphysdest2 = 0;# a# Z ~7 k6 w, @3 U
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- char *dmabufsrc1 = NULL; s; m9 b& T8 I& O _3 q* G
- char *dmabufsrc2 = NULL;
0 V6 S3 v; ~9 u9 P- Z - char *dmabufdest1 = NULL;! O% X! c7 N, J: f# C5 |* u. m* `6 D7 u
- char *dmabufdest2 = NULL;1 L! |" S( ?3 y" g" ?; `
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- static int acnt = 512;( V) Y8 l9 D. d0 p% Y. G% h; [2 z
- static int bcnt = 8; _$ |% N( ?+ t/ r
- static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);2 C$ |" k$ _/ U: U
- module_param(bcnt, int, S_IRUGO);( [+ b9 {& U/ H. ]' J
- module_param(ccnt, int, S_IRUGO);
复制代码 1 w `1 ^: }; _: \# H2 P" ]5 Z8 W
$ a; d" p9 x; l6 @ 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
- A/ ?5 i! B, [9 g( harm-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。
" S! h" Y, S& }2 l l( D' I 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。, S i4 Y# U' s7 h" @
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