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: releng/11.0/sys/mips/mips/uma_machdep.c 295451 2016-02-09 20:22:35Z glebius $");
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 <vm/vm.h>
36 #include <vm/vm_page.h>
37 #include <vm/vm_pageout.h>
38 #include <vm/uma.h>
39 #include <vm/uma_int.h>
40 #include <machine/md_var.h>
41 #include <machine/vmparam.h>
42
43 void *
44 uma_small_alloc(uma_zone_t zone, vm_size_t bytes, u_int8_t *flags, int wait)
45 {
46 vm_paddr_t pa;
47 vm_page_t m;
48 int pflags;
49 void *va;
50
51 *flags = UMA_SLAB_PRIV;
52 pflags = malloc2vm_flags(wait) | VM_ALLOC_WIRED;
53
54 for (;;) {
55 m = vm_page_alloc_freelist(VM_FREELIST_DIRECT, pflags);
56 #ifndef __mips_n64
57 if (m == NULL && vm_page_reclaim_contig(pflags, 1,
58 0, MIPS_KSEG0_LARGEST_PHYS, PAGE_SIZE, 0))
59 continue;
60 #endif
61 if (m == NULL) {
62 if (wait & M_NOWAIT)
63 return (NULL);
64 else
65 VM_WAIT;
66 } else
67 break;
68 }
69
70 pa = VM_PAGE_TO_PHYS(m);
71 va = (void *)MIPS_PHYS_TO_DIRECT(pa);
72 if ((wait & M_ZERO) && (m->flags & PG_ZERO) == 0)
73 bzero(va, PAGE_SIZE);
74 return (va);
75 }
76
77 void
78 uma_small_free(void *mem, vm_size_t size, u_int8_t flags)
79 {
80 vm_page_t m;
81 vm_paddr_t pa;
82
83 pa = MIPS_DIRECT_TO_PHYS((vm_offset_t)mem);
84 m = PHYS_TO_VM_PAGE(pa);
85 m->wire_count--;
86 vm_page_free(m);
87 atomic_subtract_int(&vm_cnt.v_wire_count, 1);
88 }
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