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本帖最后由 yyj 于 2018-1-30 11:01 编辑
' [+ a& J, Q2 T9 ^, i. k- [code]EDMA sample test application- \; Q0 _+ q% d/ u' k4 M1 x' a
- /*
% M) ~) a) j3 \0 C) [8 A$ T2 f - * edma_test.c
3 a1 b: ^3 K/ R8 `1 ] - *
' h4 }* N3 j7 Y% G+ H6 ] - * brief EDMA3 Test Application
8 V4 c" [7 {% d5 V6 b - *9 j$ U" r4 @' r0 n- ^1 A$ a
- * This file contains EDMA3 Test code.: x% w6 T m" [5 m$ ~
- *
& m9 i! B6 H9 z - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE- N) B0 ^, c4 ^. s8 [
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
7 ]5 }5 g8 x( A; t9 b: X8 ]. O - * TO CHANGE.
3 F( [& c1 _8 z9 c - *
& g5 m$ @7 U# [4 b3 j - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/: z+ i$ T4 I: o+ s; y3 `
- *3 a+ U, ~& D; Z! [- p
- * This program is free software; you can redistribute it and/or% I8 a4 O9 M3 J$ W
- * modify it under the terms of the GNU General Public License as0 z- n( @/ p- D
- * published by the Free Software Foundation version 2.
5 K& b% w) H1 G2 U# X - *) U9 k- g- a+ L4 p5 y
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any' [* U) T4 [9 z% r
- * kind, whether express or implied; without even the implied warranty C& k/ } H) m! s" a) c) Z& `0 W
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* ?7 g4 I8 @* \8 h/ Z3 ? a* G - * GNU General Public License for more details.
2 O0 c! O0 M) B" Z: b4 Q - */5 P- m7 J- V' N& s
- % y: j* J( A1 V/ {( b
- #include <linux/module.h>
: { c) \7 V- E" d8 s B: Q - #include <linux/init.h>- X. A7 R& t. Y8 Q
- #include <linux/errno.h>
; T7 R7 H: t: u2 p8 r( O - #include <linux/types.h>
; D& N1 Q. s" I' F' b* [' F - #include <linux/interrupt.h>' H% ]: W7 |: Y6 G9 I
- #include <asm/io.h>
6 G( y' u1 K0 k( n+ K; J - #include <linux/moduleparam.h>9 ~1 F& i& z8 B6 V' P+ |4 J
- #include <linux/sysctl.h>
' x9 `7 F) d) q4 b5 [ - #include <linux/mm.h>
$ Z# `$ Z' _4 d2 i3 H - #include <linux/dma-mapping.h>
; p$ Z1 }! G, m: F0 [4 x" f - 4 f R, g- V/ C) H( u1 _7 M# H
- #include <mach/memory.h>
9 a* p. X. ?' A: N/ A5 r - #include <mach/hardware.h>
4 I& U% ~/ u' ]& H1 g - #include <mach/irqs.h>% a0 e) P* ?4 Q3 S# Q6 ^: z+ B
- #include <asm/hardware/edma.h>" h( k8 ?* }9 J
- % z; P9 V% F/ p
- #undef EDMA3_DEBUG
4 _; }, B5 s; q+ W7 Q4 e& u% v - /*#define EDMA3_DEBUG*/+ X0 A1 Y( D+ }$ X1 [
+ B, G1 @, q$ ^% q* L8 B- #ifdef EDMA3_DEBUG
' q' n. c# ?, L( C1 U( f& t - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
+ x; c8 z7 C8 b - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)' H7 E" l+ }0 R; w7 z
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
' @/ U1 ~! [/ \# u2 T6 O( y# }+ F - #else
g) L: b; j% V6 y( |0 a5 F - #define DMA_PRINTK( x... )
+ F# r" }5 d4 { - #define DMA_FN_IN: L0 H {0 ^/ g& |, e \" j
- #define DMA_FN_OUT
. S; Y+ H4 o# q, f7 n - #endif3 ?6 ^5 W, g3 Y
- 3 k, ?: Q. `- L* o
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
( W5 m9 y2 }# `1 |! u2 \8 N - #define STATIC_SHIFT 3* u- x: T* [1 f% D. U
- #define TCINTEN_SHIFT 20
5 E, u* ^0 y, N/ Q3 O8 M* ? - #define ITCINTEN_SHIFT 215 ]0 `, k# E( R7 g
- #define TCCHEN_SHIFT 22* ^5 p; H( o T8 x* j$ A5 i
- #define ITCCHEN_SHIFT 23 H/ Y, v, n3 z* U; B. F5 O
- - n- g! S2 B4 c, u& m4 P
- static volatile int irqraised1 = 0;- W+ Y* s# a! l* z. W+ f
- static volatile int irqraised2 = 0;
; S @) b( q( f, i/ m J {
. O' ]+ h' I* K3 k- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);# ]1 e1 s; u+ x- p5 I `
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);, B' S( f b; S; d- S
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);0 _, X- f" a& H6 E2 Y* Y7 _
- ^+ F. L- C3 z5 o2 i- dma_addr_t dmaphyssrc1 = 0;
8 X8 r, Q0 s0 z7 F* F% F( D" ] - dma_addr_t dmaphyssrc2 = 0;
# ]1 B8 H& h& l' t - dma_addr_t dmaphysdest1 = 0;# Z) Q# S# F G
- dma_addr_t dmaphysdest2 = 0;+ Y, z7 W$ p, O0 |
- 0 A! H" r% v& y- l7 F0 q( Q; q
- char *dmabufsrc1 = NULL;! T0 R3 p3 n- r
- char *dmabufsrc2 = NULL;
# Q0 T9 X! v6 T7 H F% W# a. t - char *dmabufdest1 = NULL;& ]5 P; I2 H1 J9 I
- char *dmabufdest2 = NULL;8 K+ u5 d( R3 w4 `4 A" p
- 2 a3 i; J" p% L6 a5 a5 L/ S
- static int acnt = 512;
! T' H" L( t; |% r+ S2 f# G- I - static int bcnt = 8; M& w, m0 a- V5 E0 Y
- static int ccnt = 8;
; r& Q+ [( E0 I% c. u! b - ! e, `- {" L! m! h) ^% Z4 O
- module_param(acnt, int, S_IRUGO);$ o9 P7 S/ d$ _# {( }& w6 }% X
- module_param(bcnt, int, S_IRUGO);5 A' Y# N. X% c* e$ O6 n
- 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& T3 q+ N& Y: Aarm-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。5 \5 a, P* Q u1 K1 H
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。3 Y" j9 q% ?* }& V* S3 ]# p
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