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本帖最后由 yyj 于 2018-1-30 11:01 编辑 2 Z: W4 p. j! O1 u3 v+ _
- [code]EDMA sample test application4 ?% b* ~# V3 ^, o! s# s
- /*+ _, i! [6 h/ U2 @( t! Q+ u5 |1 A# p
- * edma_test.c8 n6 F3 k8 L" k) L, J! W$ O
- *
9 X/ c" C) L4 O, H) Q. [ - * brief EDMA3 Test Application
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- * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
! \4 ]. s1 a& U# A7 e: A9 w1 D - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
2 y( V0 A* T9 \ - * TO CHANGE.
, Q& q: V* |9 |1 i - *
; r) t3 M r1 @( N/ F" y% m& _8 [ - * 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: s% b; F8 b1 K# ]; {4 ]
- * modify it under the terms of the GNU General Public License as
7 J/ `/ \6 M* n N1 _ - * published by the Free Software Foundation version 2.* a" s% Z9 H4 m- ~
- *
# ?. _& ]" S6 r - * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ P7 Z! ?# |& O m! U! w - * kind, whether express or implied; without even the implied warranty
, L# F, p/ t4 s, {- a3 Q) {6 V- P - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the5 y2 q4 ^, Z7 w. r8 n( m$ K0 _
- * GNU General Public License for more details.* J l5 }3 V! }# L; h
- */
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- #include <linux/module.h> F5 z" v3 D/ i0 E' L! t ?9 M
- #include <linux/init.h>0 I8 O( C/ w+ S4 ~" D/ M
- #include <linux/errno.h>
6 k7 j' J4 \3 F: L& P0 U - #include <linux/types.h>
9 I* r: m& x; h% n0 i/ z* v$ V+ K - #include <linux/interrupt.h>
# _! }7 |; A1 i3 \, z - #include <asm/io.h>
! M* V0 w" \* S/ u' O5 u1 B* o6 @ - #include <linux/moduleparam.h>
3 Z& Z) q: D5 h. A9 M @8 R: V3 s - #include <linux/sysctl.h>
$ a& t5 E) j7 Z+ D+ o1 @0 G1 x - #include <linux/mm.h>
) n s; n. d! U2 z. y" D - #include <linux/dma-mapping.h>0 |$ l- {! ?$ i4 ~7 |
9 Y& m4 v' M8 {7 N+ n0 C0 _0 M- #include <mach/memory.h>
" h' e7 V/ a- \& [8 a: w0 B - #include <mach/hardware.h>
6 }8 n; m% L9 [8 R" R2 L - #include <mach/irqs.h>
, G- x5 _2 z8 m* X+ n) z - #include <asm/hardware/edma.h>
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- #undef EDMA3_DEBUG4 {( O2 r- {. l; c& u1 S
- /*#define EDMA3_DEBUG*/& @6 u$ c* q) W) k! z
2 i& B/ o) b5 ~( b+ Z9 k! B- #ifdef EDMA3_DEBUG0 z8 z: ], J' D: n& {
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
, {) V! r; P9 W) k$ c9 f& N - #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)7 i2 v! M; S+ Z' g. z/ b% u2 _
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
9 o6 \9 `6 C( G1 k+ a5 K - #else: s; z- T: z! e& V; D
- #define DMA_PRINTK( x... )
0 H7 A: K7 M/ D. v7 N- F) p - #define DMA_FN_IN
- r+ |5 L; |/ T* y% X - #define DMA_FN_OUT
& k& m+ i& T) D0 T( O) w - #endif' E9 Z1 t+ A' @. i& t3 Y8 d4 w, s
; J# E# I8 I Q# d0 a3 e: X- #define MAX_DMA_TRANSFER_IN_BYTES (32768)
' A6 V+ w* O0 c5 U! E. U( W. U+ h7 Q - #define STATIC_SHIFT 3$ A( U/ A: t) ]
- #define TCINTEN_SHIFT 20
+ V5 {2 M/ O) w _, W0 F6 `% [ - #define ITCINTEN_SHIFT 21
: l! {* `/ t" { S, v: a4 _( Z; A - #define TCCHEN_SHIFT 22
+ W7 ]/ T- X# L9 j8 i6 x# _ - #define ITCCHEN_SHIFT 23( K# i0 t6 A3 e# H
- % }) |' w K4 V! e5 p4 R7 ^
- static volatile int irqraised1 = 0;
! h( Z: Z1 f6 Y4 V - static volatile int irqraised2 = 0; y/ R @2 Z) w9 G
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- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
% |5 m' v; X* Q x: | - int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);2 T$ t6 q' K2 H4 K7 Q
- int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);' R- i$ {% A! ]* G+ p- ?
6 s9 s1 L0 z( v- dma_addr_t dmaphyssrc1 = 0;
9 W% U/ _. |+ p2 } - dma_addr_t dmaphyssrc2 = 0;/ I5 e* C5 k4 l# R+ e7 x6 o, Z
- dma_addr_t dmaphysdest1 = 0;
/ \/ m/ o& U3 L3 N* k - dma_addr_t dmaphysdest2 = 0;. N7 s1 o" r# B" S& d
4 f5 w. |) Z7 ?; C) A2 n- char *dmabufsrc1 = NULL;; q8 G# y, l* R/ ~# Y! s0 M4 z; }
- char *dmabufsrc2 = NULL;, q& e0 Y9 B; D
- char *dmabufdest1 = NULL;
, x5 h( m6 C& ^ - char *dmabufdest2 = NULL;
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- static int acnt = 512;
G. G4 V# s# W$ y l - static int bcnt = 8;# m9 n5 [5 Y! j) l- R
- static int ccnt = 8;* P* V( ^9 p! \- _+ e
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- module_param(acnt, int, S_IRUGO);9 T: `+ g& _4 L, [' a
- module_param(bcnt, int, S_IRUGO);
5 u3 t- {6 A4 ^0 R - 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$ p* }' _6 [: i/ I0 p
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。
2 Q/ R Q- e. n( h5 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。3 [4 r! u, {* q/ F( h
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