OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
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/*) N% C5 ?0 X1 ], d) O$ u9 \- c, @/ i n
* edma_test.c$ R7 S, Q: r$ b, w Q: E5 L. e
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* brief EDMA3 Test Application) U+ l- o7 c o9 c% G7 X
*
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* This file contains EDMA3 Test code.6 o- b" z0 o8 a* {2 Z2 [
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT" {0 J& L5 n, L/ [- @3 `& p
* TO CHANGE. H% }5 E* c' D) q) Z$ r
*$ `2 w1 |$ I/ e( X% p6 Q: j
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/- X' |2 N5 f+ A% D
*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as. x! R9 f+ |" g+ W4 Z
* published by the Free Software Foundation version 2.$ y1 j3 ?& ~" J
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any. m& R$ \( ?5 T7 `) ~# D2 I
* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.# i1 `7 u2 H" i2 \4 l/ A2 t7 V/ w
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>* C* O+ y- j. B1 J/ c
#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <linux/moduleparam.h>/ P. E3 h, n8 A: m( e! B
#include <linux/sysctl.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>) T/ h! E4 y7 z% F( g) b
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#include <mach/memory.h>+ C/ m3 N. `. M8 g! v! C4 @* c
#include <mach/hardware.h>; [ `6 H6 f4 N; d L1 G0 L$ J
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG+ j4 p# B% D, A+ [, ~; E& j% o
/*#define EDMA3_DEBUG*/0 w1 ^& O1 h7 M& x! b
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)# w9 X6 L* z( [; d
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)* k4 C5 x' i6 T1 d. R* d4 B4 e X
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)) E; Z0 `2 T: I
#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN7 V9 B# Y+ Z" Z5 m: D+ G
#define DMA_FN_OUT% S0 V# ~0 F4 _8 {7 w6 L
#endif% N4 n5 ~3 z7 J3 @/ N
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)6 ?, p. @! C% d6 m2 \" }
#define STATIC_SHIFT 37 V0 Q0 x8 D* `
#define TCINTEN_SHIFT 20- t1 F" }! q/ S" s& N
#define ITCINTEN_SHIFT 21' A: m# T! r, X5 |
#define TCCHEN_SHIFT 22: Z |2 f, s5 {; x# X+ @+ ]0 t @
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;: Q K$ `; m. G! G
static volatile int irqraised2 = 0;, J: p" K) \! \0 ^
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);9 b6 A. G" E) e1 c$ B
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);$ u* A, q* j; m7 V
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);( I7 ], i5 T1 w$ D
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dma_addr_t dmaphyssrc1 = 0;6 H8 ^1 n: n- N8 I" T
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;; k! y: h' B! [/ r
dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;) U) ^$ z, D+ { n- Z
char *dmabufsrc2 = NULL;0 I) C! _3 }0 p5 Y
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);# B- M: T1 a5 e3 I
module_param(ccnt, int, S_IRUGO);

复制代码

   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
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。
   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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