| kern_physio.c (35021) | kern_physio.c (37389) |
|---|---|
| 1/* 2 * Copyright (c) 1994 John S. Dyson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice immediately at the beginning of the file, without modification, 10 * this list of conditions, and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Absolutely no warranty of function or purpose is made by the author 15 * John S. Dyson. 16 * 4. Modifications may be freely made to this file if the above conditions 17 * are met. 18 * | 1/* 2 * Copyright (c) 1994 John S. Dyson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice immediately at the beginning of the file, without modification, 10 * this list of conditions, and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Absolutely no warranty of function or purpose is made by the author 15 * John S. Dyson. 16 * 4. Modifications may be freely made to this file if the above conditions 17 * are met. 18 * |
| 19 * $Id: kern_physio.c,v 1.25 1998/03/28 10:33:05 bde Exp $ | 19 * $Id: kern_physio.c,v 1.26 1998/04/04 05:55:05 dyson Exp $ |
| 20 */ 21 22#include <sys/param.h> 23#include <sys/systm.h> 24#include <sys/buf.h> 25#include <sys/conf.h> 26#include <sys/proc.h> 27#include <sys/uio.h> --- 135 unchanged lines hidden (view full) --- 163 return (error); 164} 165 166u_int 167minphys(bp) 168 struct buf *bp; 169{ 170 u_int maxphys = DFLTPHYS; | 20 */ 21 22#include <sys/param.h> 23#include <sys/systm.h> 24#include <sys/buf.h> 25#include <sys/conf.h> 26#include <sys/proc.h> 27#include <sys/uio.h> --- 135 unchanged lines hidden (view full) --- 163 return (error); 164} 165 166u_int 167minphys(bp) 168 struct buf *bp; 169{ 170 u_int maxphys = DFLTPHYS; |
| 171 struct bdevsw *bdsw; | 171 struct cdevsw *bdsw; |
| 172 int offset; 173 | 172 int offset; 173 |
| 174 bdsw = cdevsw[major(bp->b_dev)]->d_bdev; | 174 bdsw = cdevsw[major(bp->b_dev)]; |
| 175 176 if (bdsw && bdsw->d_maxio) { 177 maxphys = bdsw->d_maxio; 178 } 179 if (bp->b_kvasize && (bp->b_kvasize < maxphys)) 180 maxphys = bp->b_kvasize; 181 182 if(((vm_offset_t) bp->b_data) & PAGE_MASK) { --- 5 unchanged lines hidden (view full) --- 188 } 189 190 return bp->b_bcount; 191} 192 193struct buf * 194phygetvpbuf(dev_t dev, int resid) 195{ | 175 176 if (bdsw && bdsw->d_maxio) { 177 maxphys = bdsw->d_maxio; 178 } 179 if (bp->b_kvasize && (bp->b_kvasize < maxphys)) 180 maxphys = bp->b_kvasize; 181 182 if(((vm_offset_t) bp->b_data) & PAGE_MASK) { --- 5 unchanged lines hidden (view full) --- 188 } 189 190 return bp->b_bcount; 191} 192 193struct buf * 194phygetvpbuf(dev_t dev, int resid) 195{ |
| 196 struct bdevsw *bdsw; | 196 struct cdevsw *bdsw; |
| 197 int maxio; 198 | 197 int maxio; 198 |
| 199 bdsw = cdevsw[major(dev)]->d_bdev; 200 if (bdsw == NULL) | 199 bdsw = cdevsw[major(dev)]; 200 if ((bdsw == NULL) || (bdsw->d_bmaj == -1)) |
| 201 return getpbuf(); 202 203 maxio = bdsw->d_maxio; 204 if (resid > maxio) 205 resid = maxio; 206 207 return getpbuf(); 208} 209 | 201 return getpbuf(); 202 203 maxio = bdsw->d_maxio; 204 if (resid > maxio) 205 resid = maxio; 206 207 return getpbuf(); 208} 209 |
| 210int 211rawread(dev, uio, ioflag) 212 dev_t dev; 213 struct uio *uio; 214 int ioflag; 215{ 216 return (physio(cdevsw[major(dev)]->d_strategy, (struct buf *)NULL, 217 dev, 1, minphys, uio)); 218} 219 220int 221rawwrite(dev, uio, ioflag) 222 dev_t dev; 223 struct uio *uio; 224 int ioflag; 225{ 226 return (physio(cdevsw[major(dev)]->d_strategy, (struct buf *)NULL, 227 dev, 0, minphys, uio)); 228} 229 | |
| 230static void 231physwakeup(bp) 232 struct buf *bp; 233{ 234 wakeup((caddr_t) bp); 235 bp->b_flags &= ~B_CALL; 236} | 210static void 211physwakeup(bp) 212 struct buf *bp; 213{ 214 wakeup((caddr_t) bp); 215 bp->b_flags &= ~B_CALL; 216} |