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本帖最后由 yyj 于 2018-1-30 11:01 编辑
( c, s* @/ L! j/ B/ w- [code]EDMA sample test application- \7 [9 A X+ [5 h/ z" M
- /*7 K) }4 G! x: L: k6 y
- * edma_test.c- [5 g& y2 u! U6 q% g+ G6 y5 G
- *
- n! b/ ?+ E) x; H+ q/ K - * brief EDMA3 Test Application, \1 L% u* p/ e' X* D) Y4 ^7 I
- *+ x t' v6 o/ ]: ]2 r0 Y* H
- * This file contains EDMA3 Test code.5 s2 N2 X& h$ U K- p
- *+ u t8 r, f) _" z* u
- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE: @: \7 M+ ~, k. t; I/ N4 G( L
- * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT) y4 \8 A4 \& I5 S4 X
- * TO CHANGE.4 I9 c; q4 n' z/ [+ O
- *+ m) X# Y8 @9 x, V. s+ [4 a
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
# X) j, k, e" P5 W9 D7 ]+ R$ c1 q) ~ - *
+ D# n; {( x0 p; v( k- E* p- C% Y - * This program is free software; you can redistribute it and/or
) s. a" ~- m/ Z - * modify it under the terms of the GNU General Public License as/ \) e" V) U+ Z. j3 @; f- z
- * published by the Free Software Foundation version 2.
% M! ]* `/ D: F) { - */ m6 d/ X# ~& m
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
7 B1 }5 u* T8 K1 x* x3 a* C3 F: } - * kind, whether express or implied; without even the implied warranty1 ?6 g3 s0 x, U
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the& a7 M& z; X* W; I' p
- * GNU General Public License for more details.* x/ \0 I) r% q* W3 p5 `$ Q( J
- */. t) o1 Y$ L' N$ C9 i' g. V4 n5 v
7 y) e, V$ S" A& a- #include <linux/module.h>0 E, X2 b; M B
- #include <linux/init.h>" x7 ?0 m0 @ y4 o0 V
- #include <linux/errno.h>/ m4 X# i- I/ B; e2 ?" E
- #include <linux/types.h>/ ]6 e9 T9 s+ V
- #include <linux/interrupt.h>' J" m: p" r; p
- #include <asm/io.h>
! S5 v2 Q# O% h9 \& p# s - #include <linux/moduleparam.h>
! V+ z* b! O/ O - #include <linux/sysctl.h>6 {2 h5 i3 N/ |( ]
- #include <linux/mm.h>0 E- ~5 L, e) h9 v0 K
- #include <linux/dma-mapping.h>$ u7 K; R1 W7 F2 B( d& l1 h
- 6 r' i2 q* z0 a% H% {
- #include <mach/memory.h>
, Q" I* A5 h4 d0 ^! }+ ^/ @# e - #include <mach/hardware.h>) I. Q2 i! @5 Y8 i) {0 T0 S
- #include <mach/irqs.h>
1 E6 |+ j) d, C e4 K$ ` - #include <asm/hardware/edma.h>9 J$ k5 J! L! i: l$ F
- 9 m C+ h2 w/ V
- #undef EDMA3_DEBUG) W9 H& L! P1 |' a/ F/ k
- /*#define EDMA3_DEBUG*/
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' L1 J4 Q" u$ w) ^4 U7 A- #ifdef EDMA3_DEBUG' W1 v1 F) I% r/ x8 Q5 o( c8 p
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)% V% \: z7 x( e4 _% @6 G
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__): t! s5 v9 ?$ y0 M1 ]0 C
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
4 l+ i4 H4 a& ` s% m - #else* Y2 ?% [1 y" }! f3 `. r' w2 Q* `
- #define DMA_PRINTK( x... )
! |( n0 Y$ \" K - #define DMA_FN_IN) ~/ q6 J" s9 T1 i/ w
- #define DMA_FN_OUT
4 ?, m) Y H, V- I; y) w% R - #endif
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4 u( h+ O5 f1 C6 `( q+ p" n- #define MAX_DMA_TRANSFER_IN_BYTES (32768)# F$ I7 r- o1 x; o, X, _1 k
- #define STATIC_SHIFT 3
# H3 a8 {9 t* C1 F+ S- u - #define TCINTEN_SHIFT 202 n4 N0 Q9 @* N) k
- #define ITCINTEN_SHIFT 21
7 h( b/ `" C! j# t - #define TCCHEN_SHIFT 22
]8 w }4 u9 a( U" Z - #define ITCCHEN_SHIFT 23
& a! }, n: I: b( A( V0 y - # C- a& m/ ]4 d3 ?9 U4 S# n0 L0 ?; r
- static volatile int irqraised1 = 0;
! n5 ^' a! l! m& | - static volatile int irqraised2 = 0;# {8 r2 R6 ]- _$ Y) g
- 8 {; q6 V! ] }
- int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);* \( r/ s" d7 N# q- O3 {$ y% p" v% z, z
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
; q& k* D+ _- x2 e - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
* c! X( h3 X; u
3 t! G2 T1 r( I% d, c- dma_addr_t dmaphyssrc1 = 0;5 U Q& N% R5 a, W
- dma_addr_t dmaphyssrc2 = 0;! p# E! y8 q5 W+ m5 t9 d
- dma_addr_t dmaphysdest1 = 0;
; u0 P5 _; p7 {+ ?- R - dma_addr_t dmaphysdest2 = 0;- H) H1 Y) D* b2 t+ \' K. v: S Z
, j t1 W( r: X( ~- char *dmabufsrc1 = NULL;& _* w1 ^( B6 @$ ^
- char *dmabufsrc2 = NULL;
8 D- x M- M' }1 z2 }4 R) H" c - char *dmabufdest1 = NULL;6 i9 s, K8 c0 j. ^7 e i
- char *dmabufdest2 = NULL;
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- static int acnt = 512;
# P$ J- S" t) J: H: R - static int bcnt = 8;
. n" v2 |5 X$ E% z" l- I0 z1 l9 V - static int ccnt = 8;$ @! l* {$ e/ l8 z9 a
0 t* r- l7 S5 U0 J& l. j- module_param(acnt, int, S_IRUGO);) g, Q$ T! B. l$ L: |7 Z
- module_param(bcnt, int, S_IRUGO);# t5 ~7 z) I# I; p
- module_param(ccnt, int, S_IRUGO);
复制代码 5 f3 ]; H; Y$ A5 l
/ a& z* Q4 {9 n& b% ^ 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5 d% B) Z" e2 ]" Z4 B3 ~$ c
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。7 ?1 b( X" e u/ T
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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