f09f11ca04
Not all child devices of the NVDIMM root device represent DIMM devices
which are present in the system. The spec says (ACPI 6.2, sec 9.20.2):
For each NVDIMM present or intended to be supported by platform,
platform firmware also exposes an NVDIMM device ... under the
NVDIMM root device.
Present NVDIMM devices are found by walking all of the NFIT table's
SPA ranges, then walking the NVDIMM regions mentioned by those SPA
ranges.
A set of NFIT walking helper functions are introduced to avoid the
need to splat the enumeration logic across several disparate
callbacks.
Submitted by: D Scott Phillips <d.scott.phillips@intel.com>
Sponsored by: Intel Corporation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D18439
113 lines
3.9 KiB
C
113 lines
3.9 KiB
C
/*-
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* Copyright (c) 2017 The FreeBSD Foundation
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* All rights reserved.
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* Copyright (c) 2018, 2019 Intel Corporation
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*
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* This software was developed by Konstantin Belousov <kib@FreeBSD.org>
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef __DEV_NVDIMM_VAR_H__
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#define __DEV_NVDIMM_VAR_H__
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typedef uint32_t nfit_handle_t;
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enum nvdimm_root_ivar {
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NVDIMM_ROOT_IVAR_ACPI_HANDLE,
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NVDIMM_ROOT_IVAR_DEVICE_HANDLE,
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NVDIMM_ROOT_IVAR_MAX,
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};
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__BUS_ACCESSOR(nvdimm_root, acpi_handle, NVDIMM_ROOT, ACPI_HANDLE, ACPI_HANDLE)
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__BUS_ACCESSOR(nvdimm_root, device_handle, NVDIMM_ROOT, DEVICE_HANDLE,
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nfit_handle_t)
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struct nvdimm_root_dev {
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SLIST_HEAD(, SPA_mapping) spas;
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};
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struct nvdimm_dev {
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device_t nv_dev;
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nfit_handle_t nv_handle;
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uint64_t **nv_flush_addr;
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int nv_flush_addr_cnt;
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};
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enum SPA_mapping_type {
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SPA_TYPE_VOLATILE_MEMORY = 0,
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SPA_TYPE_PERSISTENT_MEMORY = 1,
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SPA_TYPE_CONTROL_REGION = 2,
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SPA_TYPE_DATA_REGION = 3,
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SPA_TYPE_VOLATILE_VIRTUAL_DISK = 4,
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SPA_TYPE_VOLATILE_VIRTUAL_CD = 5,
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SPA_TYPE_PERSISTENT_VIRTUAL_DISK= 6,
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SPA_TYPE_PERSISTENT_VIRTUAL_CD = 7,
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SPA_TYPE_UNKNOWN = 127,
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};
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struct SPA_mapping {
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SLIST_ENTRY(SPA_mapping) link;
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enum SPA_mapping_type spa_type;
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int spa_domain;
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int spa_nfit_idx;
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uint64_t spa_phys_base;
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uint64_t spa_len;
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uint64_t spa_efi_mem_flags;
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void *spa_kva;
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struct cdev *spa_dev;
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struct g_geom *spa_g;
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struct g_provider *spa_p;
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struct bio_queue_head spa_g_queue;
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struct mtx spa_g_mtx;
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struct mtx spa_g_stat_mtx;
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struct devstat *spa_g_devstat;
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struct proc *spa_g_proc;
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struct vm_object *spa_obj;
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bool spa_g_proc_run;
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bool spa_g_proc_exiting;
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};
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MALLOC_DECLARE(M_NVDIMM);
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void acpi_nfit_get_dimm_ids(ACPI_TABLE_NFIT *nfitbl, nfit_handle_t **listp,
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int *countp);
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void acpi_nfit_get_spa_range(ACPI_TABLE_NFIT *nfitbl, uint16_t range_index,
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ACPI_NFIT_SYSTEM_ADDRESS **spa);
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void acpi_nfit_get_spa_ranges(ACPI_TABLE_NFIT *nfitbl,
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ACPI_NFIT_SYSTEM_ADDRESS ***listp, int *countp);
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void acpi_nfit_get_region_mappings_by_spa_range(ACPI_TABLE_NFIT *nfitbl,
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uint16_t spa_range_index, ACPI_NFIT_MEMORY_MAP ***listp, int *countp);
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void acpi_nfit_get_control_region(ACPI_TABLE_NFIT *nfitbl,
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uint16_t control_region_index, ACPI_NFIT_CONTROL_REGION **out);
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void acpi_nfit_get_flush_addrs(ACPI_TABLE_NFIT *nfitbl, nfit_handle_t dimm,
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uint64_t ***listp, int *countp);
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enum SPA_mapping_type nvdimm_spa_type_from_uuid(struct uuid *);
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struct nvdimm_dev *nvdimm_find_by_handle(nfit_handle_t nv_handle);
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int nvdimm_spa_init(struct SPA_mapping *spa, ACPI_NFIT_SYSTEM_ADDRESS *nfitaddr,
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enum SPA_mapping_type spa_type);
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void nvdimm_spa_fini(struct SPA_mapping *spa);
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#endif /* __DEV_NVDIMM_VAR_H__ */
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