f6486d9d01
fixed the build for non haiku platforms git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15569 a95241bf-73f2-0310-859d-f6bbb57e9c96
134 lines
3.6 KiB
C
134 lines
3.6 KiB
C
/*
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* mem_op.h 1.14 2001/08/24 12:16:13
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License
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* at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and
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* limitations under the License.
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*
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* The initial developer of the original code is David A. Hinds
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* <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
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* are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU General Public License version 2 (the "GPL"), in
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* which case the provisions of the GPL are applicable instead of the
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* above. If you wish to allow the use of your version of this file
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* only under the terms of the GPL and not to allow others to use
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* your version of this file under the MPL, indicate your decision by
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* deleting the provisions above and replace them with the notice and
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* other provisions required by the GPL. If you do not delete the
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* provisions above, a recipient may use your version of this file
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* under either the MPL or the GPL.
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*/
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#ifndef _LINUX_MEM_OP_H
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#define _LINUX_MEM_OP_H
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#include <asm/uaccess.h>
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/*
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If UNSAFE_MEMCPY is defined, we use the (optimized) system routines
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to copy between a card and kernel memory. These routines do 32-bit
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operations which may not work with all PCMCIA controllers. The
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safe versions defined here will do only 8-bit and 16-bit accesses.
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*/
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#ifdef UNSAFE_MEMCPY
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#define copy_from_pc memcpy_fromio
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#define copy_to_pc memcpy_toio
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static inline void copy_pc_to_user(void *to, const void *from, size_t n)
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{
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size_t odd = (n & 3);
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n -= odd;
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while (n) {
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put_user(readl_ns(from), (int *)to);
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(char *)from += 4; (char *)to += 4; n -= 4;
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}
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while (odd--)
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put_user(readb((char *)from++), (char *)to++);
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}
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static inline void copy_user_to_pc(void *to, const void *from, size_t n)
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{
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int l;
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char c;
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size_t odd = (n & 3);
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n -= odd;
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while (n) {
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get_user(l, (int *)from);
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writel_ns(l, to);
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(char *)to += 4; (char *)from += 4; n -= 4;
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}
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while (odd--) {
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get_user(c, (char *)from++);
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writeb(c, (char *)to++);
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}
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}
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#else /* UNSAFE_MEMCPY */
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static inline void copy_from_pc(void *to, const void *from, size_t n)
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{
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size_t odd = (n & 1);
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n -= odd;
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while (n) {
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*(u_short *)to = readw_ns(from);
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(char *)to += 2; (char *)from += 2; n -= 2;
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}
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if (odd)
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*(u_char *)to = readb(from);
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}
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static inline void copy_to_pc(void *to, const void *from, size_t n)
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{
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size_t odd = (n & 1);
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n -= odd;
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while (n) {
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writew_ns(*(u_short *)from, to);
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(char *)to += 2; (char *)from += 2; n -= 2;
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}
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if (odd)
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writeb(*(u_char *)from, to);
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}
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static inline void copy_pc_to_user(void *to, const void *from, size_t n)
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{
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size_t odd = (n & 1);
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n -= odd;
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while (n) {
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put_user(readw_ns(from), (short *)to);
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(char *)to += 2; (char *)from += 2; n -= 2;
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}
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if (odd)
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put_user(readb(from), (char *)to);
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}
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static inline void copy_user_to_pc(void *to, const void *from, size_t n)
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{
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short s;
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char c;
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size_t odd = (n & 1);
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n -= odd;
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while (n) {
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get_user(s, (short *)from);
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writew_ns(s, to);
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(char *)to += 2; (char *)from += 2; n -= 2;
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}
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if (odd) {
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get_user(c, (char *)from);
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writeb(c, to);
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}
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}
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#endif /* UNSAFE_MEMCPY */
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#endif /* _LINUX_MEM_OP_H */
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