1139825Simp/*- 2125184Sgrehan * Copyright (c) 2003 The FreeBSD Project 3125184Sgrehan * All rights reserved. 4125184Sgrehan * 5125184Sgrehan * Redistribution and use in source and binary forms, with or without 6125184Sgrehan * modification, are permitted provided that the following conditions 7125184Sgrehan * are met: 8125184Sgrehan * 9125184Sgrehan * 1. Redistributions of source code must retain the above copyright 10125184Sgrehan * notice, this list of conditions and the following disclaimer. 11125184Sgrehan * 2. Redistributions in binary form must reproduce the above copyright 12125184Sgrehan * notice, this list of conditions and the following disclaimer in the 13125184Sgrehan * documentation and/or other materials provided with the distribution. 14125184Sgrehan * 15125184Sgrehan * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16125184Sgrehan * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17125184Sgrehan * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18125184Sgrehan * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19125184Sgrehan * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20125184Sgrehan * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21125184Sgrehan * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22125184Sgrehan * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23125184Sgrehan * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24125184Sgrehan * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25125184Sgrehan */ 26125184Sgrehan 27125184Sgrehan#include <sys/cdefs.h> 28125184Sgrehan__FBSDID("$FreeBSD: stable/11/sys/powerpc/powerpc/uma_machdep.c 331017 2018-03-15 19:08:33Z kevans $"); 29125184Sgrehan 30125184Sgrehan#include <sys/param.h> 31125682Sgrehan#include <sys/kernel.h> 32125184Sgrehan#include <sys/lock.h> 33243040Skib#include <sys/malloc.h> 34125184Sgrehan#include <sys/mutex.h> 35125184Sgrehan#include <sys/systm.h> 36125682Sgrehan#include <sys/sysctl.h> 37331017Skevans#include <sys/vmmeter.h> 38125184Sgrehan#include <vm/vm.h> 39125184Sgrehan#include <vm/vm_page.h> 40190681Snwhitehorn#include <vm/vm_kern.h> 41125184Sgrehan#include <vm/vm_pageout.h> 42190681Snwhitehorn#include <vm/vm_extern.h> 43125184Sgrehan#include <vm/uma.h> 44190681Snwhitehorn#include <vm/uma.h> 45125184Sgrehan#include <vm/uma_int.h> 46190681Snwhitehorn#include <machine/md_var.h> 47125184Sgrehan#include <machine/vmparam.h> 48125184Sgrehan 49125682Sgrehanstatic int hw_uma_mdpages; 50125682SgrehanSYSCTL_INT(_hw, OID_AUTO, uma_mdpages, CTLFLAG_RD, &hw_uma_mdpages, 0, 51125682Sgrehan "UMA MD pages in use"); 52125682Sgrehan 53125184Sgrehanvoid * 54280957Srstoneuma_small_alloc(uma_zone_t zone, vm_size_t bytes, u_int8_t *flags, int wait) 55125184Sgrehan{ 56125184Sgrehan void *va; 57287015Sjhibbits vm_paddr_t pa; 58125184Sgrehan vm_page_t m; 59190681Snwhitehorn 60125184Sgrehan *flags = UMA_SLAB_PRIV; 61125184Sgrehan 62327785Smarkj m = vm_page_alloc(NULL, 0, 63327785Smarkj malloc2vm_flags(wait) | VM_ALLOC_WIRED | VM_ALLOC_NOOBJ); 64327785Smarkj if (m == NULL) 65327785Smarkj return (NULL); 66125184Sgrehan 67287015Sjhibbits pa = VM_PAGE_TO_PHYS(m); 68204128Snwhitehorn 69287015Sjhibbits /* On book-e sizeof(void *) < sizeof(vm_paddr_t) */ 70287015Sjhibbits if ((vm_offset_t)pa != pa) 71287015Sjhibbits return (NULL); 72287015Sjhibbits 73287015Sjhibbits va = (void *)(vm_offset_t)pa; 74287015Sjhibbits 75204128Snwhitehorn if (!hw_direct_map) 76204128Snwhitehorn pmap_kenter((vm_offset_t)va, VM_PAGE_TO_PHYS(m)); 77204128Snwhitehorn 78125184Sgrehan if ((wait & M_ZERO) && (m->flags & PG_ZERO) == 0) 79125184Sgrehan bzero(va, PAGE_SIZE); 80125682Sgrehan atomic_add_int(&hw_uma_mdpages, 1); 81125682Sgrehan 82125184Sgrehan return (va); 83125184Sgrehan} 84125184Sgrehan 85125184Sgrehanvoid 86280957Srstoneuma_small_free(void *mem, vm_size_t size, u_int8_t flags) 87125184Sgrehan{ 88125184Sgrehan vm_page_t m; 89125184Sgrehan 90204128Snwhitehorn if (!hw_direct_map) 91204128Snwhitehorn pmap_remove(kernel_pmap,(vm_offset_t)mem, 92204128Snwhitehorn (vm_offset_t)mem + PAGE_SIZE); 93190681Snwhitehorn 94204128Snwhitehorn m = PHYS_TO_VM_PAGE((vm_offset_t)mem); 95172189Salc m->wire_count--; 96125184Sgrehan vm_page_free(m); 97263620Sbdrewery atomic_subtract_int(&vm_cnt.v_wire_count, 1); 98125682Sgrehan atomic_subtract_int(&hw_uma_mdpages, 1); 99125184Sgrehan} 100