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& n) j2 Z8 m. x& y, F1 v% w4 _( H1 K4 e
/*+ \" C$ l# O3 ^1 a, i7 ?
* edma_test.c* W) ^. ]5 D; b, z1 X4 Q: Q
*
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* 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
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE./ v, T1 n2 O3 z8 u; ]% |) F5 ?/ P
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/: m+ s# ?$ L6 n6 U$ Y
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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
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any- S. S" m4 j" q/ y8 b
* kind, whether express or implied; without even the implied warranty6 s6 W( Z8 g2 C" U0 h
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.% m- P; w" W+ d7 n) d
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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>& T. I' y) Q/ q' q F" ^1 b9 _: P( l
#include <linux/interrupt.h>
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#include <asm/io.h>' t: N2 p% ?$ R! ^& j# ?$ f; ~3 a
#include <linux/moduleparam.h>( n8 m4 R0 B6 | d9 i2 N
#include <linux/sysctl.h>0 }9 Z" U { f% i/ t7 }
#include <linux/mm.h>7 q, y9 [7 p1 E
#include <linux/dma-mapping.h>* G) `6 o' T* R' E" [/ C; A
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#include <mach/memory.h>
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#include <mach/hardware.h>+ E/ d& c/ [% ^' T
#include <mach/irqs.h>4 [6 }3 Q* `' { i0 U) s
#include <asm/hardware/edma.h>% t, c$ k& T7 X
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#undef EDMA3_DEBUG
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/*#define EDMA3_DEBUG*/
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)2 K- o% T8 r, [2 H# B. @6 y
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)4 X5 I# y: N- Y/ q% M5 F; y
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)! S7 d$ o$ s: Q0 }6 @
#else) Q( B% w8 ~9 j+ |/ t Z* k* @
#define DMA_PRINTK( x... )
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#define DMA_FN_IN
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#define DMA_FN_OUT3 H5 O. Y( P: X/ ~
#endif$ _; H$ R0 Y+ F( g
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)' M% m9 U5 }% W8 ]& X
#define STATIC_SHIFT 3( e+ `* B' c1 a" T! ~
#define TCINTEN_SHIFT 20% |5 D: R) X, }) U
#define ITCINTEN_SHIFT 21! \ ^1 ^6 [% N' _+ o: y* w; c$ N
#define TCCHEN_SHIFT 229 o/ ~( ?' V4 ?3 |
#define ITCCHEN_SHIFT 232 f5 f, V6 y; A0 I- K
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static volatile int irqraised1 = 0;( [! N7 c- R2 x' O2 }5 H& z* \
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);# h# ], n' |8 e% `
int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);. M4 A6 x, }4 ~, H+ S: x* C( F
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;2 L8 A, Q& T0 A# C2 y4 x. v0 ?& z
dma_addr_t dmaphyssrc2 = 0;' V4 h# ^/ m6 o$ n
dma_addr_t dmaphysdest1 = 0;# k! e( d$ \/ H* Y: g5 \5 v# ~6 q; ]4 u
dma_addr_t dmaphysdest2 = 0;5 B! {: x/ |- |. c
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char *dmabufsrc1 = NULL;! \. V9 `" Z4 `
char *dmabufsrc2 = NULL;
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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;3 C8 [! x3 R# N8 ^
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);
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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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