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本帖最后由 yyj 于 2018-1-30 11:01 编辑 % f9 t* }& a. k/ T$ t
- [code]EDMA sample test application
q/ s8 s3 u6 Z! r) S4 m1 h - /*
6 y3 J0 b# \/ h- w - * edma_test.c4 e% G9 ^7 d5 B/ _0 m
- *
6 E4 U" f. E0 n/ R - * brief EDMA3 Test Application( v! D5 _. z5 s7 G
- *
2 f) u, w+ n: Q* L' p - * This file contains EDMA3 Test code.* o4 h% {3 t4 D) Q \
- *
2 `3 ]' U4 J. E4 @- B - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE' ~; w5 W" J4 r
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
5 s- I+ A8 A4 x0 ]4 N: f - * TO CHANGE.5 Z$ R: B0 h V! |& R% z
- *5 c- X: ~: Q5 U
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
9 d$ Q( J8 N& z$ c; P2 C6 P - *
4 A b z, \) P( E4 z8 m8 Z - * This program is free software; you can redistribute it and/or
5 n: u6 }3 v% n- e# u - * modify it under the terms of the GNU General Public License as
y; Y: |6 |! b0 V% y1 C W - * published by the Free Software Foundation version 2.
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- * This program is distributed "as is" WITHOUT ANY WARRANTY of any5 s7 P1 {6 B. S' j6 u8 z- }
- * kind, whether express or implied; without even the implied warranty
2 w' U4 @6 j/ a) L5 p7 @. N - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
" w1 {4 A5 k% f1 _- L - * GNU General Public License for more details.
# j/ e% X$ }) L. O/ ~5 K* `! x b) y - */# j; A: @/ {- T0 k/ p
7 V% f) m9 b+ Y! S1 d- #include <linux/module.h>4 b# p3 E- g6 B/ f; o1 G) R* y( [
- #include <linux/init.h>+ j2 N3 I5 z3 L2 B
- #include <linux/errno.h>
. Y2 c+ [& v9 v4 h8 ? - #include <linux/types.h>
" z. B I) ~" U- v D) K+ ? - #include <linux/interrupt.h>% I( x( ?6 B0 q y Q# d2 I/ K
- #include <asm/io.h>
i7 c: z( k- {. } - #include <linux/moduleparam.h>- t! g+ v p; J8 E. O2 Y0 v
- #include <linux/sysctl.h>5 s9 ?. B4 V- j
- #include <linux/mm.h>& F6 p; Q6 ]% J2 B1 L( X
- #include <linux/dma-mapping.h>1 E; q. D4 ]. ]9 d% v
8 g' l2 `3 W/ x4 o' Y- #include <mach/memory.h> \# N* _9 G5 X1 s, F
- #include <mach/hardware.h>
9 T3 t/ m& ^+ |; l' C6 ] - #include <mach/irqs.h>; e6 |7 W3 i0 e* P: o2 g4 y
- #include <asm/hardware/edma.h>
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" ?2 U% K5 I0 Y: g2 v8 s- #undef EDMA3_DEBUG- V+ _7 e2 e+ d3 j8 O0 _& o w- a, F
- /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG+ `6 r0 k$ w& P, q2 d9 R! N
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
! P5 k" ^1 b# E- j/ m& t - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__), J) y$ u E4 T# u M) i
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
; p8 l s+ O6 V; [2 t8 n+ _ - #else P% n/ u2 T* Z1 A1 I' u
- #define DMA_PRINTK( x... )
8 B2 v9 K+ h9 N1 L - #define DMA_FN_IN
( Y3 c$ M4 `- Q6 r0 i - #define DMA_FN_OUT, A" @ E2 K, g' ]3 H
- #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768); f0 i9 {* x, A) p3 i6 ^% y
- #define STATIC_SHIFT 3
4 z9 D* G. _. C) R- W3 K" m - #define TCINTEN_SHIFT 20
1 Y- c' ]$ O# l% F# F6 u: J - #define ITCINTEN_SHIFT 21
5 _. w0 a/ m; r3 z9 M - #define TCCHEN_SHIFT 22
3 o, V# h. e4 ~! }+ w3 I - #define ITCCHEN_SHIFT 23
# }2 _3 o- q5 r
+ M7 x4 k0 r' X- static volatile int irqraised1 = 0;3 p1 c2 O/ w$ k) h3 o
- static volatile int irqraised2 = 0;
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 T$ t& k" q! y$ x; ]- ^( j
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' P, e* \+ R. ^" e! d
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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9 R9 u8 s1 k1 r- dma_addr_t dmaphyssrc1 = 0;( P. U" M$ O: j5 w& T2 Q" U6 y( ^
- dma_addr_t dmaphyssrc2 = 0;
8 T& w" l* Y; q# h* s - dma_addr_t dmaphysdest1 = 0;/ B! O: k# X5 O$ o4 m* l9 t/ L
- dma_addr_t dmaphysdest2 = 0;
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- char *dmabufsrc1 = NULL;& a0 a; `" M. M4 M
- char *dmabufsrc2 = NULL;( Y% o7 [: o% E: b
- char *dmabufdest1 = NULL;: j; a/ n9 i( t7 o2 Q3 I
- char *dmabufdest2 = NULL;
( A' w q i! f: \
O! `. q6 [5 C- \: ?$ \. C h- static int acnt = 512;# S# t, `) I: b6 Z3 i' H. \
- static int bcnt = 8;- T1 d9 Z4 h1 Q3 _' T
- static int ccnt = 8;
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& R. u1 T2 ?& F- module_param(acnt, int, S_IRUGO);
7 Z A; O- s' U& f; c2 U - module_param(bcnt, int, S_IRUGO); @! F' |0 ~! b0 V* u& t) u
- 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3 k( u9 V3 i5 m, I( I. K1 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。, G+ A8 Q" Q( d5 @/ q# ^+ `* M
我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。 c+ R& S' D/ y6 p. d
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