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本帖最后由 yyj 于 2018-1-30 11:01 编辑 % q/ R1 y, [- w
- [code]EDMA sample test application9 H% B: F9 W6 A0 v1 m7 }1 e& ]6 b
- /*
1 |; q$ ~7 `# ] c6 G3 y - * edma_test.c
+ o9 m: t# t! o6 c% v - *
: l7 }9 }; W" Y+ z# m* ? - * brief EDMA3 Test Application
+ O6 Y! B/ C; T9 c8 \6 o - */ z8 E* j9 e8 d3 L$ R( K- ] U3 X
- * This file contains EDMA3 Test code.; r; z n% p& O- I' ~% _
- *' U- O% F0 O- i5 v1 p
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
7 r/ [/ H E/ A+ ?: z. i - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT. n/ c' @$ F7 H! w3 |* F! Y/ u
- * TO CHANGE.7 c% M2 g- m; ^3 \
- *
9 W! i- j, H" D- d4 y5 u - * 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; M: e+ w; ?; ~0 K0 j
- * modify it under the terms of the GNU General Public License as
- `& t/ m$ V! ~, i - * published by the Free Software Foundation version 2.1 z- D+ R- v! m0 f; W/ H% E
- *$ ]( q* s/ ~+ ]+ i9 s" K
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- [2 y' D2 a0 g* K - * kind, whether express or implied; without even the implied warranty; I- a0 N1 i F( M" l
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
) t* [6 w. ^* A J - * GNU General Public License for more details.
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- #include <linux/module.h>
. L: o) p3 M! g7 X' ?" @$ Z8 W$ p+ x! B - #include <linux/init.h>/ {& g* C6 W9 K# O/ Q7 P
- #include <linux/errno.h>2 O% j% V9 S- E. T, J; `3 }4 Q
- #include <linux/types.h>
, ~, o9 E* G/ }% ^ - #include <linux/interrupt.h>8 D; ^. v5 P# }* T" A' V" O
- #include <asm/io.h>' F, v C0 J+ p$ t0 y
- #include <linux/moduleparam.h>
6 p: l, t0 F! I3 P- E: | - #include <linux/sysctl.h>& A2 S1 c& A+ m# `- V2 B! H v
- #include <linux/mm.h>" i2 {9 h+ \( J" ~7 Z7 F4 o& [+ ]
- #include <linux/dma-mapping.h>! p% G( g/ b2 s
3 i7 a* S# g4 M( o6 _- #include <mach/memory.h>
5 U" J' v* n4 G" ^+ S6 { - #include <mach/hardware.h>. c' u @* ?) H3 F( ]9 l, N) c
- #include <mach/irqs.h>/ ?1 }/ f# S$ L8 e
- #include <asm/hardware/edma.h>
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& q5 C/ a- J2 n- f% `- #undef EDMA3_DEBUG% y0 N: n4 M" \2 W$ S
- /*#define EDMA3_DEBUG*/
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- #ifdef EDMA3_DEBUG- w& s# V4 u: ~% V! T
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)$ z3 u a' v" V2 @6 i
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
4 O( @8 X1 \* a* B4 d: e - #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
( ^' \; `8 f6 X7 F - #else R3 @ X) \; U5 V, M0 P9 A* h
- #define DMA_PRINTK( x... )
7 x( x \" I1 z. u4 F+ M - #define DMA_FN_IN
% r3 V7 a/ P7 o+ e: C - #define DMA_FN_OUT1 A' E5 C6 N$ T" q6 \ q- I
- #endif
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- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
& K/ z( ?# l- l: v1 }" R - #define STATIC_SHIFT 3
. @5 r4 k, r1 S; k - #define TCINTEN_SHIFT 20
/ x& K$ g6 ^# y - #define ITCINTEN_SHIFT 21
3 F# L0 g, R* M# S! y8 f - #define TCCHEN_SHIFT 222 w! F/ H* P8 l# L; u
- #define ITCCHEN_SHIFT 23! z. O+ T( D- d* ]3 w& K
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- static volatile int irqraised1 = 0;7 C$ L- w+ s B, [5 `
- 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 c" ] B4 B; f - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);) C& l- ^% D5 U: ?& f: @
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* f$ {7 g- {, H
, C. p* c% ?# o, U: N, Z8 c- dma_addr_t dmaphyssrc1 = 0;4 S8 ^! w: E/ v+ ?
- dma_addr_t dmaphyssrc2 = 0;9 d& ~# y' e! W2 H5 O
- dma_addr_t dmaphysdest1 = 0;
, @4 n+ d7 i8 F) i- i - dma_addr_t dmaphysdest2 = 0;) _% a" d4 {- y4 W, i1 I
( b* Q1 d1 R# K- char *dmabufsrc1 = NULL;# c; v( I9 w9 {1 R
- char *dmabufsrc2 = NULL;; C/ e/ F; h4 F/ i
- char *dmabufdest1 = NULL;$ L* T Q+ _9 X6 ^1 k& \
- char *dmabufdest2 = NULL;
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- static int acnt = 512;# A! ~" [5 i( j, b
- static int bcnt = 8;
. b. [$ d, `- J- g5 b& ^& L6 b3 u - static int ccnt = 8;
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& O3 A' l; ~/ @6 q; e- module_param(acnt, int, S_IRUGO);; }/ o$ }9 W8 r5 J) Z
- module_param(bcnt, int, S_IRUGO);
5 B. A% _# p. K# ?* K - 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) o* }3 V2 E# m$ [0 c* K1 {
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。
" n3 Y5 H6 P; k2 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。* s6 U# V2 h) `9 U7 `: N8 M3 a
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