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本帖最后由 yyj 于 2018-1-30 11:01 编辑
3 Y6 |. {$ |% R0 }( C$ m+ a$ ^! P- [code]EDMA sample test application2 |$ _9 t" Y" W" D3 U7 S. M4 l
- /*
: v" N) |# M+ H3 K" A - * edma_test.c: e. ^- V: V; Q5 I
- *
0 P7 V; ~/ z2 [ V8 w5 C - * brief EDMA3 Test Application
9 K% R4 b) ?2 k - *
! G, C! ?- C6 {( Y* u- q6 o/ r) h9 y7 N - * This file contains EDMA3 Test code.4 X2 W* z. t2 ?0 t9 `
- *
3 s( ?" ~. I3 R1 k, [6 l - * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE( S, _, {& T% m8 S( y
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT5 j0 B7 I4 U, ]3 F
- * TO CHANGE.
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- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/$ K# p5 A8 B7 y8 ~3 M* r
- *
# o J1 j0 ~0 S9 g3 H - * This program is free software; you can redistribute it and/or
( G( o7 H3 `- X# h5 ?7 _ - * modify it under the terms of the GNU General Public License as
* z$ x& C$ r( x9 e - * published by the Free Software Foundation version 2.) w7 ?5 h; z% V- }
- *' p5 C; m! z0 E
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any5 T' v1 U+ J% j
- * kind, whether express or implied; without even the implied warranty
3 M0 J# ]+ D& a/ ] - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the- \+ j+ ^- D6 q" p
- * GNU General Public License for more details.
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: u7 f- V8 M. w# z8 O- #include <linux/module.h>
) q' h# i5 }8 J3 B - #include <linux/init.h>; _' G6 A1 a7 N7 y
- #include <linux/errno.h>- q& d( i2 a3 [: m
- #include <linux/types.h>
. w1 q2 F8 V$ K. s4 f4 b - #include <linux/interrupt.h>/ |8 u/ q o6 l& ?) r: D' S- O' k
- #include <asm/io.h>' q- D! o- R ]& s" [% j& K
- #include <linux/moduleparam.h>
; ^/ w8 n' f, N8 A - #include <linux/sysctl.h>
* H% x* [) I& P9 b - #include <linux/mm.h>/ B2 {3 U. u1 | u6 s+ o/ o/ V
- #include <linux/dma-mapping.h>$ M. B& z5 P% v1 s, A/ O2 o/ U
* }) P9 D, T1 q2 W' R* Q3 Q- H- #include <mach/memory.h>( ]% J& x$ i% m5 m# b6 _& B4 P d
- #include <mach/hardware.h>
( S1 b, I( d8 H - #include <mach/irqs.h>- F3 E/ _1 V% @7 C! P* w
- #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG
, {; l% t, R2 t - /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG
1 U5 U- Z3 m$ _7 e" i0 G% r7 o - #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS); w) n; o4 w, c2 d5 U" Z
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)1 I* I! b/ Q( {. l, V* G
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__); V. } H5 u% |* \9 }" E% _# `
- #else
( x5 E# n5 V9 U - #define DMA_PRINTK( x... )
' f+ @+ I2 Z: t0 S/ P. r* q - #define DMA_FN_IN/ J l' A% u6 d) m* P9 l
- #define DMA_FN_OUT6 S- @9 p" p$ l' t K/ W
- #endif" A7 ]2 p' t7 o0 c9 C& j k, k
- ( r3 X0 k' q" s& u6 g% m
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
2 ^6 k M* _" u3 E- S: k - #define STATIC_SHIFT 3
( m" \) L' ?5 t7 ]. Z1 i- O5 S* ` - #define TCINTEN_SHIFT 20& w1 k) n6 o# l1 I0 B+ v( z7 w
- #define ITCINTEN_SHIFT 21! k4 g9 F" a9 B, V
- #define TCCHEN_SHIFT 22' \5 P2 E& r i% L: I+ @6 m
- #define ITCCHEN_SHIFT 237 k9 B+ q: ?$ a, y" N2 k% a. J
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- static volatile int irqraised1 = 0;; X. |# r/ y+ p- O! s9 ^* R4 j
- static volatile int irqraised2 = 0;
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7 C @8 ~+ O' ?. m, g8 Y5 I- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);- t3 B* S! d* W o0 s* L* M @! C
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue); K/ x( Q" h( \! M4 A' t
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);: q( z3 H" Y, j) S
; P0 t1 g5 V; I; k- dma_addr_t dmaphyssrc1 = 0;
- t& v2 F9 m0 f" ^ - dma_addr_t dmaphyssrc2 = 0;
- A! @4 F5 X1 a2 g4 k/ `' @ - dma_addr_t dmaphysdest1 = 0;
% K ~( ]+ j$ ^ - dma_addr_t dmaphysdest2 = 0;' i* ^- r( m& Q: s
+ X+ w q* d% G5 U5 S1 X$ x- char *dmabufsrc1 = NULL;0 M; P O# z* [# X8 ?" \
- char *dmabufsrc2 = NULL;
! E5 O# g" G$ a9 i" q - char *dmabufdest1 = NULL;1 M0 y8 A2 T, Q9 K
- char *dmabufdest2 = NULL;
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- ?6 H3 j5 o* ?: S* B- static int acnt = 512;$ k* j/ `+ p! _
- static int bcnt = 8;
; T, J8 _& u8 b2 ~ - static int ccnt = 8;7 L3 o1 h# b4 n- F9 u2 p. G
5 r5 V4 @' z) s' R- module_param(acnt, int, S_IRUGO);- [6 f1 g5 W7 e5 E
- module_param(bcnt, int, S_IRUGO);$ _( `7 P f5 l+ V7 S4 o
- module_param(ccnt, int, S_IRUGO);
复制代码 . {. p. V; E; ?. m5 K8 q) n+ U
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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 e4 W; |2 s% K4 ?" C) n) a" ?
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。
: e9 @: Y J7 S: a! i( q. n* A 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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