1/*-
2 * Copyright (c) 2003 Alan L. Cox <alc@cs.rice.edu>
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, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: stable/11/sys/mips/mips/uma_machdep.c 331722 2018-03-29 02:50:57Z eadler $");
29
30#include <sys/param.h>
31#include <sys/lock.h>
32#include <sys/malloc.h>
33#include <sys/mutex.h>
34#include <sys/systm.h>
35#include <sys/vmmeter.h>
36#include <vm/vm.h>
37#include <vm/vm_page.h>
38#include <vm/vm_pageout.h>
39#include <vm/uma.h>
40#include <vm/uma_int.h>
41#include <machine/md_var.h>
42#include <machine/vmparam.h>
43
44void *
45uma_small_alloc(uma_zone_t zone, vm_size_t bytes, u_int8_t *flags, int wait)
46{
47	vm_paddr_t pa;
48	vm_page_t m;
49	int pflags;
50	void *va;
51
52	*flags = UMA_SLAB_PRIV;
53	pflags = malloc2vm_flags(wait) | VM_ALLOC_WIRED;
54#ifndef __mips_n64
55	pflags &= ~(VM_ALLOC_WAITOK | VM_ALLOC_WAITFAIL);
56	pflags |= VM_ALLOC_NOWAIT;
57#endif
58
59	for (;;) {
60		m = vm_page_alloc_freelist(VM_FREELIST_DIRECT, pflags);
61#ifndef __mips_n64
62		if (m == NULL && vm_page_reclaim_contig(pflags, 1,
63		    0, MIPS_KSEG0_LARGEST_PHYS, PAGE_SIZE, 0))
64			continue;
65#endif
66		if (m == NULL) {
67			if (wait & M_NOWAIT)
68				return (NULL);
69			else
70				VM_WAIT;
71		} else
72			break;
73	}
74
75	pa = VM_PAGE_TO_PHYS(m);
76	va = (void *)MIPS_PHYS_TO_DIRECT(pa);
77	if ((wait & M_ZERO) && (m->flags & PG_ZERO) == 0)
78		bzero(va, PAGE_SIZE);
79	return (va);
80}
81
82void
83uma_small_free(void *mem, vm_size_t size, u_int8_t flags)
84{
85	vm_page_t m;
86	vm_paddr_t pa;
87
88	pa = MIPS_DIRECT_TO_PHYS((vm_offset_t)mem);
89	m = PHYS_TO_VM_PAGE(pa);
90	m->wire_count--;
91	vm_page_free(m);
92	atomic_subtract_int(&vm_cnt.v_wire_count, 1);
93}
94