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本帖最后由 yyj 于 2018-1-30 11:01 编辑 ; D, c1 H, `( o' Q1 L: n
- [code]EDMA sample test application
0 z/ r% _( i1 I& M$ u }" q( ]$ z! }: a - /*
2 I" Y5 c, h. g( V, ~ - * edma_test.c
7 b# o1 u+ e7 U i B6 m9 Y - *
) Q9 c+ t) F- d* [( X4 K+ T) z+ \ - * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.$ M- G; {- H4 w+ h8 T6 H
- *+ h j" c$ w) d6 P/ W1 \! l9 R
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE' P; \- u* |, @8 Y/ F2 R1 n, n
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT0 N. v3 u/ W# x3 D5 x
- * TO CHANGE., E( P6 W X0 b; H- ?* x4 w p
- *
# \" ^) ?! F* s5 e# X6 | [ y - * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/6 M/ l0 Y' Z8 a2 A! R2 f$ |
- *
+ C$ w! P! a; Q7 e, W2 [$ v( n - * This program is free software; you can redistribute it and/or
0 P- T& D6 D$ ?& ]2 H - * modify it under the terms of the GNU General Public License as( L+ B. u& c1 a* ?- F% K
- * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any& Z: F" e3 ]7 Q0 H5 q
- * kind, whether express or implied; without even the implied warranty" `# Z: t+ G1 l4 J2 Y8 V
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2 {3 z x, O, E- K# b4 I. K* i - * GNU General Public License for more details.9 o1 v2 C+ L. f$ r( s3 _& c9 m
- */
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- #include <linux/module.h>
( i6 Q& V1 ` s; @' ?7 `* s - #include <linux/init.h>5 V1 o# ]/ Y1 b8 x3 g3 q
- #include <linux/errno.h>
$ H4 X8 b; G5 e! v* {& A - #include <linux/types.h>
# r6 Z" ]7 v7 \. o o! g - #include <linux/interrupt.h>8 s( p4 r# D, d6 F
- #include <asm/io.h>
% `+ k {5 s& h: N+ d" y+ i - #include <linux/moduleparam.h>
% o* ^, `: L0 Q, n - #include <linux/sysctl.h>
( k4 J1 ]& t, d( c! N- G# n - #include <linux/mm.h>
/ J! u/ J6 i8 P: F4 w8 n - #include <linux/dma-mapping.h>9 L; m0 Z$ J6 W& `+ F
1 U4 W% @" E& [* Q- #include <mach/memory.h>
+ f' H7 Y0 E5 F7 R - #include <mach/hardware.h>' S" M( R. ~' D. m: s( m& i
- #include <mach/irqs.h>2 |, K) h) D3 i f$ g3 c3 Y% Z
- #include <asm/hardware/edma.h>
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' P* E8 Y) R8 F1 a- #undef EDMA3_DEBUG
) z, p/ f7 r7 C - /*#define EDMA3_DEBUG*/+ L5 \' W$ l' D [9 y0 Q
- ; J7 x( C m" K. v1 @
- #ifdef EDMA3_DEBUG
* g; P" O% f3 d _3 R1 H+ N: Q1 ] - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS). T2 q, p$ j" x c* l$ j
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__): |, A# a6 o! D* m5 H# d# a
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)# A0 N2 c/ @6 {0 j1 g
- #else
0 ^* \) |, w$ O: ?" m) T& C" E& F - #define DMA_PRINTK( x... )4 X* T2 `) i; |
- #define DMA_FN_IN) P a- x' a( B' {5 s
- #define DMA_FN_OUT0 ^6 I$ D; b1 w; G/ J6 h
- #endif
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5 Q" n6 N) E" c+ A- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
- t: b0 o: d9 e - #define STATIC_SHIFT 3
g4 s+ Q j( A# { - #define TCINTEN_SHIFT 20) J/ h& X, a. |! O2 P
- #define ITCINTEN_SHIFT 21
- f" a4 c6 L9 h( x. h) e - #define TCCHEN_SHIFT 22
& x7 V; \' S0 `/ Q/ H1 \ - #define ITCCHEN_SHIFT 23- o# I3 }' o3 E5 `
- 3 v+ G' V' }/ h' W' }
- static volatile int irqraised1 = 0;+ y+ b2 B! q- ]4 @
- static volatile int irqraised2 = 0;+ P' |% C: D# h' r& m- [
3 s& R+ U$ d5 v) m1 C: l7 b! w- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' L, g' G- @/ p/ ^
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
$ ^# J/ S: Y- v9 k- `5 i - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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- dma_addr_t dmaphyssrc1 = 0;- n4 i& }' ^% d
- dma_addr_t dmaphyssrc2 = 0;
0 Y+ e6 ]/ f4 ?6 q" O: [ - dma_addr_t dmaphysdest1 = 0;
i2 @. I! F* c' `& U - dma_addr_t dmaphysdest2 = 0;& ]. Q% g% n3 m& d }, ~2 k; v- P
- # L# F, p. g ^& g0 W
- char *dmabufsrc1 = NULL;9 c! v& w2 T7 m
- char *dmabufsrc2 = NULL;& d+ g3 E' p, i5 h" c3 ~, D
- char *dmabufdest1 = NULL;
7 g2 v. a" `9 j0 ^7 }5 q% a - char *dmabufdest2 = NULL;
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- static int acnt = 512;
& V1 \4 A; o% u! r9 Q F' d3 P# W - static int bcnt = 8;7 Y7 x9 F3 t, Z9 L% n1 x" x5 a
- static int ccnt = 8;5 k6 l y2 k! ?& P$ E# a, M: e
- ; l7 p6 |. T/ Z; j6 J
- module_param(acnt, int, S_IRUGO);
- }0 @2 ^5 M w3 |4 |- ~ - module_param(bcnt, int, S_IRUGO);' W+ R$ _8 L/ [/ A O
- module_param(ccnt, int, S_IRUGO);
复制代码 : o2 g* i1 Q% A2 }5 d; v* k
, ]7 C5 ?* N3 {) x4 x# W( N5 `1 l$ 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
& Y$ P, t' \7 Jarm-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。' {' f* |6 S+ K7 q4 O1 e9 Y
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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