212 lines
6.1 KiB
C
212 lines
6.1 KiB
C
/*-
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* Copyright (c) 2018 Intel Corporation
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* All rights reserved.
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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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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/bio.h>
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#include <sys/bus.h>
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#include <sys/malloc.h>
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#include <sys/uuid.h>
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#include <contrib/dev/acpica/include/acpi.h>
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#include <dev/acpica/acpivar.h>
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#include <dev/nvdimm/nvdimm_var.h>
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static int
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uint32_t_compare(const void *a, const void *b)
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{
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return (*(const uint32_t *)a - *(const uint32_t *)b);
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}
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static int
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find_matches(ACPI_TABLE_NFIT *nfitbl, uint16_t type, uint16_t offset,
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uint64_t mask, uint64_t value, void **ptrs, int ptrs_len)
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{
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ACPI_NFIT_HEADER *h, *end;
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uint64_t val;
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size_t load_size;
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int count;
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h = (ACPI_NFIT_HEADER *)(nfitbl + 1);
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end = (ACPI_NFIT_HEADER *)((char *)nfitbl +
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nfitbl->Header.Length);
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load_size = roundup2(flsl(mask), 8) / 8;
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count = 0;
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while (h < end) {
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if (h->Type == type) {
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bcopy((char *)h + offset, &val, load_size);
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val &= mask;
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if (val == value) {
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if (ptrs_len > 0) {
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ptrs[count] = h;
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ptrs_len--;
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}
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count++;
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}
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}
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if (h->Length == 0)
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break;
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h = (ACPI_NFIT_HEADER *)((char *)h + h->Length);
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}
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return (count);
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}
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static void
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malloc_find_matches(ACPI_TABLE_NFIT *nfitbl, uint16_t type, uint16_t offset,
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uint64_t mask, uint64_t value, void ***ptrs, int *ptrs_len)
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{
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int count;
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count = find_matches(nfitbl, type, offset, mask, value, NULL, 0);
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*ptrs_len = count;
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if (count == 0) {
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*ptrs = NULL;
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return;
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}
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*ptrs = mallocarray(count, sizeof(void *), M_NVDIMM, M_WAITOK);
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find_matches(nfitbl, type, offset, mask, value, *ptrs, *ptrs_len);
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}
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void
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acpi_nfit_get_dimm_ids(ACPI_TABLE_NFIT *nfitbl, nfit_handle_t **listp,
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int *countp)
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{
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ACPI_NFIT_SYSTEM_ADDRESS **spas;
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ACPI_NFIT_MEMORY_MAP ***regions;
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int i, j, k, maxids, num_spas, *region_counts;
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acpi_nfit_get_spa_ranges(nfitbl, &spas, &num_spas);
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if (num_spas == 0) {
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*listp = NULL;
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*countp = 0;
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return;
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}
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regions = mallocarray(num_spas, sizeof(uint16_t *), M_NVDIMM,
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M_WAITOK);
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region_counts = mallocarray(num_spas, sizeof(int), M_NVDIMM, M_WAITOK);
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for (i = 0; i < num_spas; i++) {
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acpi_nfit_get_region_mappings_by_spa_range(nfitbl,
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spas[i]->RangeIndex, ®ions[i], ®ion_counts[i]);
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}
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maxids = 0;
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for (i = 0; i < num_spas; i++) {
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maxids += region_counts[i];
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}
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*listp = mallocarray(maxids, sizeof(nfit_handle_t), M_NVDIMM, M_WAITOK);
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k = 0;
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for (i = 0; i < num_spas; i++) {
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for (j = 0; j < region_counts[i]; j++)
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(*listp)[k++] = regions[i][j]->DeviceHandle;
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}
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qsort((*listp), maxids, sizeof(uint32_t), uint32_t_compare);
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i = 0;
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for (j = 1; j < maxids; j++) {
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if ((*listp)[i] != (*listp)[j])
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(*listp)[++i] = (*listp)[j];
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}
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*countp = i + 1;
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free(region_counts, M_NVDIMM);
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for (i = 0; i < num_spas; i++)
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free(regions[i], M_NVDIMM);
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free(regions, M_NVDIMM);
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free(spas, M_NVDIMM);
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}
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void
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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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{
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*spa = NULL;
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find_matches(nfitbl, ACPI_NFIT_TYPE_SYSTEM_ADDRESS,
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offsetof(ACPI_NFIT_SYSTEM_ADDRESS, RangeIndex), UINT16_MAX,
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range_index, (void **)spa, 1);
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}
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void
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acpi_nfit_get_spa_ranges(ACPI_TABLE_NFIT *nfitbl,
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ACPI_NFIT_SYSTEM_ADDRESS ***listp, int *countp)
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{
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malloc_find_matches(nfitbl, ACPI_NFIT_TYPE_SYSTEM_ADDRESS, 0, 0, 0,
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(void ***)listp, countp);
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}
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void
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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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{
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malloc_find_matches(nfitbl, ACPI_NFIT_TYPE_MEMORY_MAP,
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offsetof(ACPI_NFIT_MEMORY_MAP, RangeIndex), UINT16_MAX,
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spa_range_index, (void ***)listp, countp);
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}
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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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{
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*out = NULL;
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find_matches(nfitbl, ACPI_NFIT_TYPE_CONTROL_REGION,
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offsetof(ACPI_NFIT_CONTROL_REGION, RegionIndex), UINT16_MAX,
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control_region_index, (void **)out, 1);
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}
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void
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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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{
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ACPI_NFIT_FLUSH_ADDRESS *subtable;
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int i;
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subtable = NULL;
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find_matches(nfitbl, ACPI_NFIT_TYPE_FLUSH_ADDRESS,
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offsetof(ACPI_NFIT_FLUSH_ADDRESS, DeviceHandle), UINT32_MAX,
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dimm, (void **)&subtable, 1);
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if (subtable == NULL || subtable->HintCount == 0) {
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*listp = NULL;
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*countp = 0;
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return;
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}
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*countp = subtable->HintCount;
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*listp = mallocarray(subtable->HintCount, sizeof(uint64_t *), M_NVDIMM,
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M_WAITOK);
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for (i = 0; i < subtable->HintCount; i++)
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(*listp)[i] = (uint64_t *)(intptr_t)subtable->HintAddress[i];
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}
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void
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acpi_nfit_get_memory_maps_by_dimm(ACPI_TABLE_NFIT *nfitbl, nfit_handle_t dimm,
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ACPI_NFIT_MEMORY_MAP ***listp, int *countp)
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{
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malloc_find_matches(nfitbl, ACPI_NFIT_TYPE_MEMORY_MAP,
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offsetof(ACPI_NFIT_MEMORY_MAP, DeviceHandle), UINT32_MAX, dimm,
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(void ***)listp, countp);
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}
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