00001 #ifndef _SYS_BANKMEM_H_ 00002 #define _SYS_BANKMEM_H_ 00003 00004 /* 00005 * Copyright (C) 2003-2005 by egnite Software GmbH. All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 00011 * 1. Redistributions of source code must retain the above copyright 00012 * notice, this list of conditions and the following disclaimer. 00013 * 2. Redistributions in binary form must reproduce the above copyright 00014 * notice, this list of conditions and the following disclaimer in the 00015 * documentation and/or other materials provided with the distribution. 00016 * 3. Neither the name of the copyright holders nor the names of 00017 * contributors may be used to endorse or promote products derived 00018 * from this software without specific prior written permission. 00019 * 00020 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS 00021 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00022 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00023 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE 00024 * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00025 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00026 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 00027 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 00028 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00029 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 00030 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00031 * SUCH DAMAGE. 00032 * 00033 * For additional information see http://www.ethernut.de/ 00034 * 00035 */ 00036 00062 #include <sys/types.h> 00063 #include <cfg/bankmem.h> 00064 00070 #ifndef NUTBANK_COUNT 00071 /* 00072 * Arrrgh! I hate this. OK, on one hand the code is not 00073 * spoiled by ifdefs, but this one is sooouuu ugly. 00074 */ 00075 #define NUTBANK_COUNT 0 00076 #endif 00077 00078 #if NUTBANK_COUNT 00079 00080 #ifdef ARTHERNET1 00081 /* Arthernet uses a different banking. */ 00082 #define NutSegBufEnable(bank) *(volatile u_char *)(NUTBANK_SR) = (((u_char)bank+1)<<4) 00083 #elif MMNET02 00084 /* MMnet02 uses a different banking. */ 00085 #define NutSegBufEnable(bank) *((char *)(NUTBANK_SR)) = (bank) 00086 #else 00087 /* This is the Ethernut way. */ 00088 #define NutSegBufEnable(bank) *((char *)(NUTBANK_SR) + (bank)) = (bank) 00089 #endif 00090 00091 #else 00092 /* No banked memory. */ 00093 #define NutSegBufEnable(bank) 00094 #endif 00095 00096 00097 __BEGIN_DECLS 00098 /* Prototypes */ 00099 extern char *NutSegBufReset(void); 00100 extern char *NutSegBufInit(size_t size); 00101 extern char *NutSegBufWriteRequest(size_t * bcp); 00102 extern char *NutSegBufReadRequest(size_t * bcp); 00103 extern char *NutSegBufWriteCommit(size_t bc); 00104 extern char *NutSegBufReadCommit(size_t bc); 00105 extern void NutSegBufWriteLast(size_t bc); 00106 extern void NutSegBufReadLast(size_t bc); 00107 extern u_long NutSegBufAvailable(void); 00108 extern u_long NutSegBufUsed(void); 00109 /* */ 00110 __END_DECLS 00111 #endif