nvdimm_ns.c

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    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 
   40 int
   41 nvdimm_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                 ns->dev.spa_memattr = spa->dev.spa_memattr;
   76                 asprintf(&name, M_NVDIMM, "spa%dns%d", spa->spa_nfit_idx, i);
   77                 error = nvdimm_spa_dev_init(&ns->dev, name, i);
   78                 free(name, M_NVDIMM);
   79                 if (error != 0)
   80                         break;
   81                 SLIST_INSERT_HEAD(&spa->namespaces, ns, link);
   82                 i++;
   83         }
   84         free(regions, M_NVDIMM);
   85         return (error);
   86 }
   87 
   88 void
   89 nvdimm_destroy_namespaces(struct SPA_mapping *spa)
   90 {
   91         struct nvdimm_namespace *ns, *next;
   92 
   93         SLIST_FOREACH_SAFE(ns, &spa->namespaces, link, next) {
   94                 SLIST_REMOVE_HEAD(&spa->namespaces, link);
   95                 nvdimm_spa_dev_fini(&ns->dev);
   96                 free(ns, M_NVDIMM);
   97         }
   98 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/nvdimm/nvdimm_ns.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/nvdimm/nvdimm_ns.c