1/*-
2 * Copyright (c) 2018 Intel Corporation
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("$FreeBSD$");
29
30#include <sys/param.h>
31#include <sys/bio.h>
32#include <sys/bus.h>
33#include <sys/malloc.h>
34#include <sys/uuid.h>
35
36#include <contrib/dev/acpica/include/acpi.h>
37#include <dev/acpica/acpivar.h>
38#include <dev/nvdimm/nvdimm_var.h>
39
40int
41nvdimm_create_namespaces(struct SPA_mapping *spa, ACPI_TABLE_NFIT *nfitbl)
42{
43	ACPI_NFIT_MEMORY_MAP **regions;
44	struct nvdimm_dev *nv;
45	struct nvdimm_label_entry *e;
46	struct nvdimm_namespace *ns;
47	nfit_handle_t dimm_handle;
48	char *name;
49	int i, error, num_regions;
50
51	acpi_nfit_get_region_mappings_by_spa_range(nfitbl, spa->spa_nfit_idx,
52	    &regions, &num_regions);
53	if (num_regions == 0 || num_regions != regions[0]->InterleaveWays) {
54		free(regions, M_NVDIMM);
55		return (ENXIO);
56	}
57	dimm_handle = regions[0]->DeviceHandle;
58	nv = nvdimm_find_by_handle(dimm_handle);
59	if (nv == NULL) {
60		free(regions, M_NVDIMM);
61		return (ENXIO);
62	}
63	i = 0;
64	error = 0;
65	SLIST_FOREACH(e, &nv->labels, link) {
66		ns = malloc(sizeof(struct nvdimm_namespace), M_NVDIMM,
67		    M_WAITOK | M_ZERO);
68		ns->dev.spa_domain = spa->dev.spa_domain;
69		ns->dev.spa_phys_base = spa->dev.spa_phys_base +
70		    regions[0]->RegionOffset +
71		    num_regions *
72		    (e->label.dimm_phys_addr - regions[0]->Address);
73		ns->dev.spa_len = num_regions * e->label.raw_size;
74		ns->dev.spa_efi_mem_flags = spa->dev.spa_efi_mem_flags;
75		asprintf(&name, M_NVDIMM, "spa%dns%d", spa->spa_nfit_idx, i);
76		error = nvdimm_spa_dev_init(&ns->dev, name);
77		free(name, M_NVDIMM);
78		if (error != 0)
79			break;
80		SLIST_INSERT_HEAD(&spa->namespaces, ns, link);
81		i++;
82	}
83	free(regions, M_NVDIMM);
84	return (error);
85}
86
87void
88nvdimm_destroy_namespaces(struct SPA_mapping *spa)
89{
90	struct nvdimm_namespace *ns, *next;
91
92	SLIST_FOREACH_SAFE(ns, &spa->namespaces, link, next) {
93		SLIST_REMOVE_HEAD(&spa->namespaces, link);
94		nvdimm_spa_dev_fini(&ns->dev);
95		free(ns, M_NVDIMM);
96	}
97}
98