1121081Salc/*- 2121081Salc * Copyright (c) 2003 Alan L. Cox <alc@cs.rice.edu> 3121081Salc * All rights reserved. 4121081Salc * 5121081Salc * Redistribution and use in source and binary forms, with or without 6121081Salc * modification, are permitted provided that the following conditions 7121081Salc * are met: 8121081Salc * 1. Redistributions of source code must retain the above copyright 9121081Salc * notice, this list of conditions and the following disclaimer. 10121081Salc * 2. Redistributions in binary form must reproduce the above copyright 11121081Salc * notice, this list of conditions and the following disclaimer in the 12121081Salc * documentation and/or other materials provided with the distribution. 13121081Salc * 14121081Salc * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15121081Salc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16121081Salc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17121081Salc * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18121081Salc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19121081Salc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20121081Salc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21121081Salc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22121081Salc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23121081Salc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24121081Salc * SUCH DAMAGE. 25121081Salc */ 26121081Salc 27121081Salc#include <sys/cdefs.h> 28121081Salc__FBSDID("$FreeBSD$"); 29121081Salc 30121081Salc#include <sys/param.h> 31121081Salc#include <sys/lock.h> 32243040Skib#include <sys/malloc.h> 33121081Salc#include <sys/mutex.h> 34121081Salc#include <sys/systm.h> 35121081Salc#include <vm/vm.h> 36121081Salc#include <vm/vm_page.h> 37121081Salc#include <vm/vm_pageout.h> 38121081Salc#include <vm/uma.h> 39121081Salc#include <vm/uma_int.h> 40121081Salc#include <machine/md_var.h> 41121081Salc#include <machine/vmparam.h> 42121081Salc 43121081Salcvoid * 44121081Salcuma_small_alloc(uma_zone_t zone, int bytes, u_int8_t *flags, int wait) 45121081Salc{ 46121081Salc vm_page_t m; 47157908Speter vm_paddr_t pa; 48121081Salc void *va; 49121081Salc int pflags; 50121081Salc 51121081Salc *flags = UMA_SLAB_PRIV; 52243040Skib pflags = malloc2vm_flags(wait) | VM_ALLOC_NOOBJ | VM_ALLOC_WIRED; 53121081Salc for (;;) { 54226843Salc m = vm_page_alloc(NULL, 0, pflags); 55121081Salc if (m == NULL) { 56121081Salc if (wait & M_NOWAIT) 57121081Salc return (NULL); 58121081Salc else 59121081Salc VM_WAIT; 60121081Salc } else 61121081Salc break; 62121081Salc } 63157908Speter pa = m->phys_addr; 64230623Skmacy if ((wait & M_NODUMP) == 0) 65230623Skmacy dump_add_page(pa); 66157908Speter va = (void *)PHYS_TO_DMAP(pa); 67121081Salc if ((wait & M_ZERO) && (m->flags & PG_ZERO) == 0) 68121081Salc pagezero(va); 69121081Salc return (va); 70121081Salc} 71121081Salc 72121081Salcvoid 73121081Salcuma_small_free(void *mem, int size, u_int8_t flags) 74121081Salc{ 75121081Salc vm_page_t m; 76157908Speter vm_paddr_t pa; 77121081Salc 78157908Speter pa = DMAP_TO_PHYS((vm_offset_t)mem); 79157908Speter dump_drop_page(pa); 80157908Speter m = PHYS_TO_VM_PAGE(pa); 81172189Salc m->wire_count--; 82121081Salc vm_page_free(m); 83172189Salc atomic_subtract_int(&cnt.v_wire_count, 1); 84121081Salc} 85