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本帖最后由 yyj 于 2018-1-30 11:01 编辑 & C0 M) l2 {- t) Y( I
- [code]EDMA sample test application3 ]$ A- e% m5 h4 {, Q9 `
- /*# Q+ P0 L6 b0 O+ Z. s
- * edma_test.c2 j8 V$ q* D4 ]3 t) Y7 k% T
- *
$ j0 W4 i( f H0 Z - * brief EDMA3 Test Application3 [8 s) e4 e) l0 v* e
- *
- B: l& A" x+ M - * This file contains EDMA3 Test code.
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- * NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
, B! O8 b! n1 D4 S - * REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT8 C7 r' B6 t# r3 f6 W( S
- * TO CHANGE.% C# S8 S1 P% a6 e+ T2 o% G, ?" y4 U
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- * 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" k: l$ e: @1 v5 {% f, Q
- * modify it under the terms of the GNU General Public License as9 F$ P- ^! i2 u$ C
- * published by the Free Software Foundation version 2.
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& f2 X# P; K. N% Y0 w* E9 Q* S - * This program is distributed "as is" WITHOUT ANY WARRANTY of any; y: U5 V$ G4 S. u
- * kind, whether express or implied; without even the implied warranty J+ I0 ~& u6 x F1 z' x% S1 W
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
7 i T2 X' T% t9 Y - * GNU General Public License for more details.
# f A" M/ g- t - */
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- #include <linux/module.h>
% r/ ~& ^9 Q& N5 k1 X - #include <linux/init.h>$ `; m- f+ X5 o6 b) S
- #include <linux/errno.h>
8 {0 p9 W, ^$ n6 ^8 b - #include <linux/types.h>
1 i. ?- {: {- |- E7 Q. |3 ]3 B8 L - #include <linux/interrupt.h>
: x" h+ e3 Z3 ^" f% q [9 ]2 ~ - #include <asm/io.h>
% T4 j: O& ?5 [' f5 N$ x7 O. a - #include <linux/moduleparam.h>
; R& T% @; i c; k5 ]$ _1 N - #include <linux/sysctl.h>- l7 B4 ^) X) U p$ s% D
- #include <linux/mm.h># |* D$ \8 I( Y9 W$ j
- #include <linux/dma-mapping.h>
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# `, L. e3 B2 H4 ]& Q; q7 P# o; X: B- #include <mach/memory.h>% X) m! }' E) r2 \
- #include <mach/hardware.h>
0 S c* A' n1 N& O% b - #include <mach/irqs.h>
8 ]0 X: {9 b. t% ~7 N - #include <asm/hardware/edma.h>- y' V1 X6 `) x; B
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- #undef EDMA3_DEBUG
+ {3 N2 [8 ^; n; Q0 o - /*#define EDMA3_DEBUG*/
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2 J; D, W0 g2 E2 B! x6 N* q- #ifdef EDMA3_DEBUG" Z& d o8 {; Z/ z& J4 H
- #define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS); ~+ \6 ]/ \4 [! t/ e& s
- #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__), y/ N+ V6 Y7 S) r' |
- #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
. U( }( F8 ?* O6 \, i) j - #else# z$ R$ l1 t* D% N8 h: W" x
- #define DMA_PRINTK( x... )
* w& e$ S) [: r$ y - #define DMA_FN_IN
1 o+ K3 B8 M; y2 B1 p - #define DMA_FN_OUT* y9 w- U5 h+ w$ M$ @. D# T
- #endif5 H' A/ J+ d- O1 E9 F, V, m
- 1 W6 C0 V$ P) f# }
- #define MAX_DMA_TRANSFER_IN_BYTES (32768)9 `7 J, t7 m/ D x* w& C4 e
- #define STATIC_SHIFT 3
2 J- b/ H0 m: I% V6 F - #define TCINTEN_SHIFT 20 U1 R- L5 Q& H
- #define ITCINTEN_SHIFT 21
% ~1 Q" z9 R1 W* Z3 R. y - #define TCCHEN_SHIFT 22
: N( q7 B6 E1 G# ]1 {; \ - #define ITCCHEN_SHIFT 239 g1 S" `# F% }1 U# `- t# I
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- static volatile int irqraised1 = 0;
1 y% i8 T; p* h l5 b; a - 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);9 z% D$ p1 R% s& o& ^+ C3 Z0 m" {
- int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
& F6 h6 |; O6 p8 I1 G - int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);! N! x# x4 r( w: B. W- s+ ~( Z& s; l
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- dma_addr_t dmaphyssrc1 = 0;5 ^( W# R c( c8 i, i" r
- dma_addr_t dmaphyssrc2 = 0; w+ f* ^9 I# H2 P
- dma_addr_t dmaphysdest1 = 0;: T. ^2 O! [: i% M$ Z5 i
- dma_addr_t dmaphysdest2 = 0;
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/ T, `! e# k: @' n- c, k- char *dmabufsrc1 = NULL;
0 Y; E3 [" v: E: z& I: W - char *dmabufsrc2 = NULL;( @! v% s7 R9 d+ t) w5 i
- char *dmabufdest1 = NULL;
1 `# l+ M$ U. P+ ?4 o. ] - char *dmabufdest2 = NULL;
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- static int acnt = 512;1 f0 h+ f& ?3 f$ F% |
- static int bcnt = 8;
1 H$ ]0 j" L6 Z - static int ccnt = 8;
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- module_param(acnt, int, S_IRUGO);2 |: {2 S. v" i G
- module_param(bcnt, int, S_IRUGO);
! ]! `: g5 M! S - 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: i" E: S5 J, {- V
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。
# u1 h' l4 C/ Q4 v1 o7 { 我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。% ^' \ y/ k4 @+ m, q
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