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5c5185ae SG |
1 | /* |
2 | * Copyright (c) 2010 by The DragonFly Project and Samuel J. Greear. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This code is derived from software contributed to The DragonFly Project | |
6 | * by Samuel J. Greear <sjg@thesjg.com> | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * | |
12 | * 1. Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions and the following disclaimer. | |
14 | * 2. Redistributions in binary form must reproduce the above copyright | |
15 | * notice, this list of conditions and the following disclaimer in | |
16 | * the documentation and/or other materials provided with the | |
17 | * distribution. | |
18 | * 3. Neither the name of The DragonFly Project nor the names of its | |
19 | * contributors may be used to endorse or promote products derived | |
20 | * from this software without specific, prior written permission. | |
21 | * | |
22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
23 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
24 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
25 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
26 | * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
27 | * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
28 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
29 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | |
30 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
31 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT | |
32 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
33 | * SUCH DAMAGE. | |
34 | */ | |
35 | ||
36 | #include <sys/types.h> | |
37 | #include <sys/kernel.h> | |
38 | #include <sys/objcache.h> | |
39 | #include <sys/systm.h> | |
40 | #include <vm/vm.h> | |
41 | #include <vm/pmap.h> | |
42 | #include <vm/vm_extern.h> | |
43 | #include <vm/vm_kern.h> | |
44 | #include <vm/vm_page.h> | |
45 | #include <cpu/lwbuf.h> | |
46 | #include <machine/param.h> | |
47 | ||
7a683a24 MD |
48 | #if 0 |
49 | /* | |
50 | * NO LONGER USED - See inlines | |
51 | */ | |
52 | ||
5c5185ae SG |
53 | static void lwbuf_init(void *); |
54 | SYSINIT(sock_lwb, SI_BOOT2_MACHDEP, SI_ORDER_ANY, lwbuf_init, NULL); | |
55 | ||
56 | static struct objcache *lwbuf_cache; | |
57 | ||
58 | MALLOC_DEFINE(M_LWBUF, "lwbuf", "Lightweight buffers"); | |
59 | struct objcache_malloc_args lwbuf_malloc_args = { sizeof(struct lwbuf), M_LWBUF }; | |
60 | ||
61 | ||
62 | static boolean_t | |
63 | lwbuf_cache_ctor(void *obj, void *pdata, int ocflags) | |
64 | { | |
65 | struct lwbuf *lwb = (struct lwbuf *)obj; | |
66 | ||
67 | lwb->m = NULL; | |
68 | lwb->kva = 0; | |
69 | ||
70 | return (TRUE); | |
71 | } | |
72 | ||
73 | static void | |
74 | lwbuf_init(void *arg) | |
75 | { | |
76 | lwbuf_cache = objcache_create("lwbuf", 0, 0, | |
77 | lwbuf_cache_ctor, NULL, NULL, | |
78 | objcache_malloc_alloc, objcache_malloc_free, | |
79 | &lwbuf_malloc_args); | |
80 | } | |
81 | ||
7a683a24 MD |
82 | #endif |
83 | ||
84 | #if 0 | |
85 | /* | |
86 | * NO LONGER USED - See inlines | |
87 | */ | |
88 | ||
5c5185ae | 89 | struct lwbuf * |
7a683a24 | 90 | lwbuf_alloc(vm_page_t m, struct lwbuf *lwb_cache) |
5c5185ae | 91 | { |
7a683a24 | 92 | struct lwbuf *lwb = lwb_cache; |
5c5185ae SG |
93 | |
94 | lwb->m = m; | |
95 | lwb->kva = PHYS_TO_DMAP(VM_PAGE_TO_PHYS(lwb->m)); | |
96 | ||
97 | return (lwb); | |
98 | } | |
99 | ||
100 | void | |
101 | lwbuf_free(struct lwbuf *lwb) | |
102 | { | |
7a683a24 | 103 | lwb->m = NULL; /* safety */ |
5c5185ae | 104 | } |
7a683a24 MD |
105 | |
106 | #endif |