diff options
Diffstat (limited to 'sys/dev/nvdimm/nvdimm_ns.c')
| -rw-r--r-- | sys/dev/nvdimm/nvdimm_ns.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/sys/dev/nvdimm/nvdimm_ns.c b/sys/dev/nvdimm/nvdimm_ns.c new file mode 100644 index 000000000000..497be97c2c6f --- /dev/null +++ b/sys/dev/nvdimm/nvdimm_ns.c @@ -0,0 +1,97 @@ +/*- + * Copyright (c) 2018 Intel Corporation + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/bio.h> +#include <sys/bus.h> +#include <sys/malloc.h> +#include <sys/uuid.h> + +#include <contrib/dev/acpica/include/acpi.h> +#include <dev/acpica/acpivar.h> +#include <dev/nvdimm/nvdimm_var.h> + +int +nvdimm_create_namespaces(struct SPA_mapping *spa, ACPI_TABLE_NFIT *nfitbl) +{ + ACPI_NFIT_MEMORY_MAP **regions; + struct nvdimm_dev *nv; + struct nvdimm_label_entry *e; + struct nvdimm_namespace *ns; + nfit_handle_t dimm_handle; + char *name; + int i, error, num_regions; + + acpi_nfit_get_region_mappings_by_spa_range(nfitbl, spa->spa_nfit_idx, + ®ions, &num_regions); + if (num_regions == 0 || num_regions != regions[0]->InterleaveWays) { + free(regions, M_NVDIMM); + return (ENXIO); + } + dimm_handle = regions[0]->DeviceHandle; + nv = nvdimm_find_by_handle(dimm_handle); + if (nv == NULL) { + free(regions, M_NVDIMM); + return (ENXIO); + } + i = 0; + error = 0; + SLIST_FOREACH(e, &nv->labels, link) { + ns = malloc(sizeof(struct nvdimm_namespace), M_NVDIMM, + M_WAITOK | M_ZERO); + ns->dev.spa_domain = spa->dev.spa_domain; + ns->dev.spa_phys_base = spa->dev.spa_phys_base + + regions[0]->RegionOffset + + num_regions * + (e->label.dimm_phys_addr - regions[0]->Address); + ns->dev.spa_len = num_regions * e->label.raw_size; + ns->dev.spa_efi_mem_flags = spa->dev.spa_efi_mem_flags; + asprintf(&name, M_NVDIMM, "spa%dns%d", spa->spa_nfit_idx, i); + error = nvdimm_spa_dev_init(&ns->dev, name); + free(name, M_NVDIMM); + if (error != 0) + break; + SLIST_INSERT_HEAD(&spa->namespaces, ns, link); + i++; + } + free(regions, M_NVDIMM); + return (error); +} + +void +nvdimm_destroy_namespaces(struct SPA_mapping *spa) +{ + struct nvdimm_namespace *ns, *next; + + SLIST_FOREACH_SAFE(ns, &spa->namespaces, link, next) { + SLIST_REMOVE_HEAD(&spa->namespaces, link); + nvdimm_spa_dev_fini(&ns->dev); + free(ns, M_NVDIMM); + } +} |