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本帖最后由 yyj 于 2018-1-30 11:01 编辑 8 b9 z0 ^4 v+ ~: I0 r) y$ Q
- [code]EDMA sample test application
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- * edma_test.c
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- * brief EDMA3 Test Application/ p. K' @- G! A/ S1 d7 q$ M8 ?
- *5 b6 _, z5 P# @& p! s _( d
- * This file contains EDMA3 Test code.! J" M8 \1 u- c1 x* c
- *
9 |) Q6 j% K) A5 |9 v, @7 ? - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE+ _- n! s9 ~* z
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
" ~( b# M* Y8 {1 t4 Y, a9 ~6 h - * TO CHANGE.7 \! f; v& E9 Y$ \2 N) m& L
- *
/ g$ x# S- W$ d - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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- * This program is free software; you can redistribute it and/or
3 J% S8 y" [1 {1 |1 `/ \, t - * modify it under the terms of the GNU General Public License as, F% F" h+ B8 v: ^- B
- * published by the Free Software Foundation version 2.0 h* A# ^7 q' W& M+ y
- *% y5 j# m# c7 C' @
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
6 C4 G) g" u0 x- M# V, e, R - * kind, whether express or implied; without even the implied warranty
- L) e% i3 O9 f. a2 a" [4 Q - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! o# j9 d0 t& J - * GNU General Public License for more details.
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, q9 e' i5 i2 x# j: G- #include <linux/module.h>
2 c) D- ^. K: f: j& x - #include <linux/init.h>
8 S; ]& L- n; @5 \ - #include <linux/errno.h>& Q6 x6 ]& n* g3 f7 z! v; Y4 \) D
- #include <linux/types.h>% G1 t' Z8 w5 g: s7 @
- #include <linux/interrupt.h>
1 F0 V6 E1 i& b9 X# }5 Q2 H) j; G - #include <asm/io.h>
! t9 m+ ^) b- G - #include <linux/moduleparam.h>
: e6 F; l5 Y; e' \, H - #include <linux/sysctl.h>
( h' p- z1 C5 c7 y. L/ `' T - #include <linux/mm.h>3 I7 ^( K9 _, e6 p( V
- #include <linux/dma-mapping.h>: C, e8 `1 k3 X% C- M
1 e3 j E6 I5 y# x/ z- #include <mach/memory.h>$ i8 E. K w7 G7 r# U; ^0 e
- #include <mach/hardware.h>5 N g: V2 |3 A6 y- ~
- #include <mach/irqs.h>
v6 T( m2 M: I7 w( [5 ?5 ?/ Q - #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG
: g- O( A" q: {: }6 J - /*#define EDMA3_DEBUG*/3 a2 f* |2 U8 E) a
' D! z# p j( i) \8 r- #ifdef EDMA3_DEBUG
7 B, U- E% ^. H* f* Q+ d - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS). d- t: v# K8 d1 |# v0 N& k
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
$ M3 e7 f! {7 d. p - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)* ?% J8 x- x1 \! g4 d3 v
- #else
2 M5 S/ R3 r( M) m9 L; a - #define DMA_PRINTK( x... )
2 j) t' ^) D- g" w; w5 B - #define DMA_FN_IN/ f/ p' |" O( q- a1 J w( k% h8 b' k
- #define DMA_FN_OUT
X! n3 T& x/ j+ }: g- t% t5 Y - #endif
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: _7 z( l0 h% L# T6 W- #define MAX_DMA_TRANSFER_IN_BYTES (32768), Y+ H, Y9 I0 G! ^; D$ O, q
- #define STATIC_SHIFT 3. D; H0 G4 S7 W6 C
- #define TCINTEN_SHIFT 205 s' d; h, F1 m0 G
- #define ITCINTEN_SHIFT 21, V- [! o' x* O8 V. v
- #define TCCHEN_SHIFT 22
1 \9 R) K* L; h% G' C& O - #define ITCCHEN_SHIFT 23
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- static volatile int irqraised1 = 0;; h- [0 L* O4 b8 {7 p3 Z) ^( ^) F
- static volatile int irqraised2 = 0;# e, u/ s# X. X0 |) G
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% o& H) W: K3 Q! v6 B( e# |& h
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 k% A; p( F- ^6 k
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 d i. p4 Q; j8 D6 u; g4 ]% D+ o
4 \. Y$ `( @4 G. W2 r- dma_addr_t dmaphyssrc1 = 0;( u V. g% ^5 _1 H' ], ?
- dma_addr_t dmaphyssrc2 = 0;
8 \2 y& D" e t6 K4 s& d - dma_addr_t dmaphysdest1 = 0;
7 c7 j/ B/ G( d9 V/ { - dma_addr_t dmaphysdest2 = 0;, f( }/ r( k% Z; S% G7 w; Y% O) {
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- char *dmabufsrc1 = NULL;
0 j6 D- _8 u/ |" B- _3 ~/ J3 x* n - char *dmabufsrc2 = NULL;
/ r& U2 S$ n4 g5 Y/ X7 w - char *dmabufdest1 = NULL;, G0 n h. L- ?1 }
- char *dmabufdest2 = NULL;* L, ~; M# C. F# V" i; r
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- static int acnt = 512;1 z$ u1 D$ t" j6 Y( w& N; h
- static int bcnt = 8;
g! o7 G$ P, @( |# X - static int ccnt = 8;9 e' V% H. l3 H
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- module_param(acnt, int, S_IRUGO);
' W4 y6 L1 a" U - module_param(bcnt, int, S_IRUGO);# _2 m. u) d& J8 Y3 e) [
- module_param(ccnt, int, S_IRUGO);
复制代码
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) @6 J% f2 B. h* X 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2 V1 o/ I3 t5 q- |6 E( w
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。
8 O+ |1 G4 B& c, j: W4 r 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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