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本帖最后由 yyj 于 2018-1-30 11:01 编辑
S9 W+ ~" ?8 z6 S9 \& V0 l; [. T' c- [code]EDMA sample test application
; D, c* A" k$ F1 b, `- y - /*
; J1 l4 ^2 g# d - * edma_test.c$ q0 b4 q$ n* ^1 N( N, ]) ?
- *
+ d. u' t4 R# A+ w3 g, p5 C4 x - * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.9 ^, Z+ _0 u( a; ?; U3 d
- *. @$ ^9 S# ]9 `5 N
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE' i; \% l* V: G2 N0 f' Q
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
& l1 d, w5 c2 a8 s8 j* ] - * TO CHANGE.. a. J7 H" L9 P) g/ r
- *) Y! l- V, I W
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/+ V" @" [# y2 ^9 h( [' c J
- *
! o: u h3 F: [6 \0 R* l - * This program is free software; you can redistribute it and/or2 X3 ^0 ~! Y4 P t+ ?0 l' t
- * modify it under the terms of the GNU General Public License as
@6 t7 q* ~ _: {& L$ [" c) E8 t+ o - * published by the Free Software Foundation version 2.
, I2 l) `2 d* k! d+ q - *
" o& a/ a- `$ y$ X: S8 C - * This program is distributed "as is" WITHOUT ANY WARRANTY of any! c9 {% c! b9 E! R- Z
- * kind, whether express or implied; without even the implied warranty( }, D# B; D" D
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the% a+ N8 ?% b1 ~6 D7 W
- * GNU General Public License for more details.
9 d8 H* T0 ^# \* C) E1 B2 m - */% N, T) Q/ h) @: m) |- l$ Y! _
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- #include <linux/module.h>
2 v+ @3 S( ~9 H2 I5 { - #include <linux/init.h>; {. J. ~7 T; M9 p3 G& R
- #include <linux/errno.h>
7 l, p% ?6 L3 l- [" f - #include <linux/types.h>
5 s3 i: @! @! L7 @' j g/ y - #include <linux/interrupt.h>
6 M6 q/ S' V& u7 D# B1 I+ Z: C - #include <asm/io.h>
1 L, Z: g0 q0 | - #include <linux/moduleparam.h>% H; E, T% V* z G
- #include <linux/sysctl.h>. P1 s9 F: y* w. i- ~2 y
- #include <linux/mm.h>6 f* e# |) [2 A
- #include <linux/dma-mapping.h>' a9 t! X5 e8 Q( G4 p% O% M
- ) U$ E8 L* ~ @( T( T6 ~, E
- #include <mach/memory.h>
' ^: C1 z( B" H/ ~ G: T - #include <mach/hardware.h>% o6 F) }* j5 a* y
- #include <mach/irqs.h> H- p$ T! {, ?2 Z2 ?
- #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG
3 A- v+ m7 F2 ?1 B! r0 b( B$ U - /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG
5 b, v) m, K8 N5 p8 G5 Y( W7 V% A1 x0 K - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
' ~. F* u3 o6 a j: P - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)0 u" q+ L7 H' H y- M4 `3 {# S' W
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
& g2 p& A6 s( E0 ^5 {: k - #else
) s* X: H8 ^$ [6 k& I - #define DMA_PRINTK( x... )1 ]8 \9 ~% x! B) y/ n- B% X7 t; A
- #define DMA_FN_IN
, B* d2 Y! P, C0 b! [ - #define DMA_FN_OUT
7 o, P7 K& A C - #endif( S$ x' P$ q; S/ Z
- : J1 a* g/ D( N1 F1 V
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
- l# I! G. {; x9 l - #define STATIC_SHIFT 3
$ E- e0 G! i6 d% E1 q4 d - #define TCINTEN_SHIFT 203 E" L9 t3 R0 T/ H
- #define ITCINTEN_SHIFT 21
1 z5 R E8 k+ e7 a" ? - #define TCCHEN_SHIFT 22
* b: U+ S, \( [ - #define ITCCHEN_SHIFT 23
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j( ^( W8 c# e4 q# q' C8 d* i- static volatile int irqraised1 = 0;7 A- e2 [7 G& l' F3 s" F+ O- e
- static volatile int irqraised2 = 0;
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* L3 X0 U4 a- C& G- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
' u" i% Q( T! p& o9 H - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" j @/ \- {# R" M* ~
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: g0 R) c: L* m' D2 E
) {9 g7 i9 y5 v- dma_addr_t dmaphyssrc1 = 0;/ R4 f& v& G0 O5 F" D/ {
- dma_addr_t dmaphyssrc2 = 0;
7 T4 n5 [4 u* Q5 w - dma_addr_t dmaphysdest1 = 0;! l' t K) J/ F3 I: v
- dma_addr_t dmaphysdest2 = 0;& A/ S, O. B8 }$ K1 A
- _* p p, H Y4 g6 {- char *dmabufsrc1 = NULL;( J& {$ i w: m8 I! _4 ]/ L
- char *dmabufsrc2 = NULL;9 _! [; Z& y7 M/ t) K& A7 f
- char *dmabufdest1 = NULL;
. \: f) z8 d1 q+ R - char *dmabufdest2 = NULL;
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- static int acnt = 512;
\% [7 n8 W# N. E$ c- _0 f. a - static int bcnt = 8;
% v+ B% s( B2 Z, ^" P$ o - static int ccnt = 8;
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. x% X. s) S, U7 I' Z& a& G2 N- module_param(acnt, int, S_IRUGO);
# E$ y3 E" w6 Z. q - module_param(bcnt, int, S_IRUGO);
; w' t- h* F- }/ R q' B7 F' c - module_param(ccnt, int, S_IRUGO);
复制代码 4 o/ r9 H; \# o2 J
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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) b2 k# g+ \( R/ O/ w# Z* d3 c
arm-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。/ R' o' y! A) o1 N7 S) a3 x' J3 q
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。( \! }% r' m( h- b$ @% N6 }8 H
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