2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012 Semihalf
5 * Copyright (c) 2009 Jakub Klama <jakub.klama@uj.edu.pl>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/kernel.h>
36 #include <sys/malloc.h>
38 #include <sys/mutex.h>
39 #include <sys/slicer.h>
41 #include <geom/geom.h>
42 #include <geom/geom_disk.h>
43 #include <geom/geom_flashmap.h>
44 #include <geom/geom_slice.h>
46 struct g_flashmap_slice {
51 STAILQ_ENTRY(g_flashmap_slice) sl_link;
54 STAILQ_HEAD(g_flashmap_head, g_flashmap_slice);
58 flash_slicer_t slicer;
59 } g_flashmap_slicers[] = {
60 { "NAND::device", NULL },
61 { "CFI::device", NULL },
62 { "SPI::device", NULL },
63 { "MMC::device", NULL }
66 static g_taste_t g_flashmap_taste;
68 static int g_flashmap_load(device_t dev, struct g_provider *pp,
69 flash_slicer_t slicer, struct g_flashmap_head *head);
70 static int g_flashmap_modify(struct g_flashmap *gfp, struct g_geom *gp,
71 const char *devname, int secsize, struct g_flashmap_head *slices);
72 static void g_flashmap_print(struct g_flashmap_slice *slice);
74 MALLOC_DECLARE(M_FLASHMAP);
75 MALLOC_DEFINE(M_FLASHMAP, "geom_flashmap", "GEOM flash memory slicer class");
78 g_flashmap_print(struct g_flashmap_slice *slice)
81 printf("%08jx-%08jx: %s (%juKB)\n", (uintmax_t)slice->sl_start,
82 (uintmax_t)slice->sl_end, slice->sl_name,
83 (uintmax_t)(slice->sl_end - slice->sl_start) / 1024);
87 g_flashmap_modify(struct g_flashmap *gfp, struct g_geom *gp,
88 const char *devname, int secsize, struct g_flashmap_head *slices)
90 struct g_flashmap_slice *slice;
96 STAILQ_FOREACH(slice, slices, sl_link) {
98 printf("%s: slice ", devname);
99 g_flashmap_print(slice);
102 error = g_slice_config(gp, i++, G_SLICE_CONFIG_CHECK,
104 slice->sl_end - slice->sl_start + 1,
105 secsize, FLASH_SLICES_FMT, gp->name, slice->sl_name);
112 STAILQ_FOREACH(slice, slices, sl_link) {
113 free(__DECONST(void *, gfp->labels[i]), M_FLASHMAP);
114 gfp->labels[i] = strdup(slice->sl_name, M_FLASHMAP);
115 error = g_slice_config(gp, i++, G_SLICE_CONFIG_SET,
117 slice->sl_end - slice->sl_start + 1,
118 secsize, "%ss.%s", gp->name, slice->sl_name);
127 static struct g_geom *
128 g_flashmap_taste(struct g_class *mp, struct g_provider *pp, int flags)
131 struct g_consumer *cp;
132 struct g_flashmap_head head;
133 struct g_flashmap_slice *slice, *slice_temp;
134 struct g_flashmap *gfp;
135 flash_slicer_t slicer;
139 g_trace(G_T_TOPOLOGY, "flashmap_taste(%s,%s)", mp->name, pp->name);
142 if (flags == G_TF_NORMAL &&
143 strcmp(pp->geom->class->name, G_DISK_CLASS_NAME) != 0)
146 gp = g_slice_new(mp, FLASH_SLICES_MAX_NUM, pp, &cp, (void**)&gfp,
147 sizeof(struct g_flashmap), NULL);
155 for (i = 0; i < nitems(g_flashmap_slicers); i++) {
156 size = sizeof(device_t);
157 if (g_io_getattr(g_flashmap_slicers[i].type, cp,
159 slicer = g_flashmap_slicers[i].slicer;
166 if (g_flashmap_load(dev, pp, slicer, &head) == 0)
169 g_flashmap_modify(gfp, gp, cp->provider->name,
170 cp->provider->sectorsize, &head);
173 g_access(cp, -1, 0, 0);
175 STAILQ_FOREACH_SAFE(slice, &head, sl_link, slice_temp)
176 free(slice, M_FLASHMAP);
178 if (LIST_EMPTY(&gp->provider)) {
186 g_flashmap_load(device_t dev, struct g_provider *pp, flash_slicer_t slicer,
187 struct g_flashmap_head *head)
189 struct flash_slice *slices;
190 struct g_flashmap_slice *slice;
193 slices = malloc(sizeof(struct flash_slice) * FLASH_SLICES_MAX_NUM,
194 M_FLASHMAP, M_WAITOK | M_ZERO);
195 if (slicer(dev, pp->name, slices, &nslices) == 0) {
196 for (i = 0; i < nslices; i++) {
197 slice = malloc(sizeof(struct g_flashmap_slice),
198 M_FLASHMAP, M_WAITOK);
200 slice->sl_name = slices[i].label;
201 slice->sl_start = slices[i].base;
202 slice->sl_end = slices[i].base + slices[i].size - 1;
204 STAILQ_INSERT_TAIL(head, slice, sl_link);
208 free(slices, M_FLASHMAP);
212 void flash_register_slicer(flash_slicer_t slicer, u_int type, bool force)
216 if (g_flashmap_slicers[type].slicer == NULL || force == TRUE)
217 g_flashmap_slicers[type].slicer = slicer;
221 static struct g_class g_flashmap_class = {
222 .name = FLASHMAP_CLASS_NAME,
223 .version = G_VERSION,
224 .taste = g_flashmap_taste,
227 DECLARE_GEOM_CLASS(g_flashmap_class, g_flashmap);
228 MODULE_VERSION(g_flashmap, 0);