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本帖最后由 yyj 于 2018-1-30 11:01 编辑 * B' B9 z- Q: I5 G( K) X# w
- [code]EDMA sample test application
1 P$ z' [6 p$ e; X B; R - /*
/ ~* V6 k3 T; w, @* } - * edma_test.c% `+ q( x6 ^& Z( U ^
- *
' n/ j+ P3 `/ v) { - * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.7 G1 K$ H' g I: I. D( n) m
- *2 n+ H( `, L3 h3 ~5 L: N
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE: b1 S8 Y4 n& F! ?
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
; {1 M5 I6 b6 ?6 }- G - * TO CHANGE.4 M S5 P- j; i1 B# m/ W+ `5 U
- ** f# N$ I1 X @% T
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/9 F8 I2 R- N k6 k0 \
- *
$ m; O( U) u+ n: g6 @ L: y0 \ - * This program is free software; you can redistribute it and/or' d4 l1 T8 g$ n9 \* ^. |8 g
- * modify it under the terms of the GNU General Public License as& n/ _! T; C/ e% M
- * published by the Free Software Foundation version 2.7 B. t; X4 p k( Y4 O7 Y8 ~
- *
: t, _( a7 O a - * This program is distributed "as is" WITHOUT ANY WARRANTY of any9 K; U6 I/ b9 E5 g& V2 w
- * kind, whether express or implied; without even the implied warranty
0 c: e+ m7 H# G) [) a6 L% h. ? - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the9 s i, E; m C5 t: |- |
- * GNU General Public License for more details.+ h3 j: n5 C" H& _/ d2 E
- */
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$ v T ~+ p3 X; t- #include <linux/module.h>
Y- U6 g6 l7 A4 D0 w% D- h - #include <linux/init.h>3 e" A, z. p7 F" f( a$ M
- #include <linux/errno.h>8 }. H8 f, T- i: h- S
- #include <linux/types.h>
9 V! T' {) m" K8 d8 Q' b. K - #include <linux/interrupt.h>
. v6 ] _1 \8 F# W8 H: f* ` - #include <asm/io.h>; i0 K/ m1 o! x# }
- #include <linux/moduleparam.h>1 ~' j3 \. Z: a2 S% n
- #include <linux/sysctl.h>
# [* M: h( _' T( o - #include <linux/mm.h>
I% [6 a; h, P# V0 f$ D8 c3 S - #include <linux/dma-mapping.h>9 ?5 n( {3 x' j _
8 w1 w8 g1 g1 R; g- #include <mach/memory.h>
% R( \4 b& M) Y$ {9 Y+ @( P - #include <mach/hardware.h>) l- u7 Z( o" e$ m0 w, o8 R
- #include <mach/irqs.h>) V1 a) k9 B" W- e' @; t) f- t8 z
- #include <asm/hardware/edma.h>2 F; Q4 Y; s. N- U3 l3 P
- 1 }% i' s3 n, R- L$ M3 H, f
- #undef EDMA3_DEBUG% s9 A% r. s' X: N' F6 E# Y8 n
- /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG+ C. R/ }& C- f
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)4 l' Z* i% ~( F9 G
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)4 Z2 E% v9 R$ K% h) M1 S* _
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
& i7 s+ I6 r) v1 _. c - #else
- {7 r }( i2 q2 ^. q: v - #define DMA_PRINTK( x... )
9 s& Q/ P' L6 i) k0 A6 b - #define DMA_FN_IN
2 p' O. y9 E) y2 G; L) B( t - #define DMA_FN_OUT
5 g/ P0 @5 z: s: x) f$ P: \ - #endif& H$ f* F, k" D c% r; Q
- * `1 X: ]! X3 h1 w+ ~& s( J
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
* I/ `4 H9 x% v$ S - #define STATIC_SHIFT 38 q; V/ f4 D$ Z Q& [$ w
- #define TCINTEN_SHIFT 20
) e4 @3 P8 }5 o - #define ITCINTEN_SHIFT 21
. ^, }1 a" M- C - #define TCCHEN_SHIFT 22" _6 {% H5 s# p, R8 Z3 u0 u' h
- #define ITCCHEN_SHIFT 236 c3 Y+ D' d) q) b, H! o. q
- 4 A- {3 K' q) N( G
- static volatile int irqraised1 = 0;
+ c2 U g) w- k2 c" P4 D - static volatile int irqraised2 = 0;
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* G$ _7 v4 Z) L* }( L; E+ v, u- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
% a2 }% p& q7 Y4 N. W% Q6 [ - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! w: e& }8 D( H3 N' i0 A
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% @2 p' ^2 b( A9 F& r0 }
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- dma_addr_t dmaphyssrc1 = 0;
9 ]; Z& h) a) J3 J0 q - dma_addr_t dmaphyssrc2 = 0;
3 T; z# L- a$ [) o' V7 v - dma_addr_t dmaphysdest1 = 0;
4 y' `5 C ^! Z9 f \ - dma_addr_t dmaphysdest2 = 0;/ l0 K9 B/ I+ Y4 ~: p2 d
- ( g' l, n1 Y0 o2 y& j+ @
- char *dmabufsrc1 = NULL;
, ]4 n% H: V% x/ x2 U - char *dmabufsrc2 = NULL;
' v' [' f$ m5 ?& I8 x* F+ D - char *dmabufdest1 = NULL;/ h; M; `! l8 n& W: g
- char *dmabufdest2 = NULL;! \ y9 W4 y S9 K' q: a
; F) ?: `3 l5 H5 n5 R, @3 _- static int acnt = 512;
0 \& F; U& s' n+ A' A - static int bcnt = 8;6 _9 U1 d4 N7 J; _
- static int ccnt = 8;
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% D! V L+ q' u5 _- module_param(acnt, int, S_IRUGO);
8 L0 z( I8 {$ l - module_param(bcnt, int, S_IRUGO);
) m2 w/ B. p- {. @( E8 X - module_param(ccnt, int, S_IRUGO);
复制代码 2 B% }( y3 K# F6 Z* Q4 X" b
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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' K/ O# g8 n+ M/ a4 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。% `& u" D5 I) B
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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