/*- * 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 #include #include #include #include #include #include #include static int uint32_t_compare(const void *a, const void *b) { return (*(const uint32_t *)a - *(const uint32_t *)b); } static int find_matches(ACPI_TABLE_NFIT *nfitbl, uint16_t type, uint16_t offset, uint64_t mask, uint64_t value, void **ptrs, int ptrs_len) { ACPI_NFIT_HEADER *h, *end; uint64_t val; size_t load_size; int count; h = (ACPI_NFIT_HEADER *)(nfitbl + 1); end = (ACPI_NFIT_HEADER *)((char *)nfitbl + nfitbl->Header.Length); load_size = roundup2(flsl(mask), 8) / 8; count = 0; while (h < end) { if (h->Type == type) { bcopy((char *)h + offset, &val, load_size); val &= mask; if (val == value) { if (ptrs_len > 0) { ptrs[count] = h; ptrs_len--; } count++; } } if (h->Length == 0) break; h = (ACPI_NFIT_HEADER *)((char *)h + h->Length); } return (count); } static void malloc_find_matches(ACPI_TABLE_NFIT *nfitbl, uint16_t type, uint16_t offset, uint64_t mask, uint64_t value, void ***ptrs, int *ptrs_len) { int count; count = find_matches(nfitbl, type, offset, mask, value, NULL, 0); *ptrs_len = count; if (count == 0) { *ptrs = NULL; return; } *ptrs = mallocarray(count, sizeof(void *), M_NVDIMM, M_WAITOK); find_matches(nfitbl, type, offset, mask, value, *ptrs, *ptrs_len); } void acpi_nfit_get_dimm_ids(ACPI_TABLE_NFIT *nfitbl, nfit_handle_t **listp, int *countp) { ACPI_NFIT_SYSTEM_ADDRESS **spas; ACPI_NFIT_MEMORY_MAP ***regions; int i, j, k, maxids, num_spas, *region_counts; acpi_nfit_get_spa_ranges(nfitbl, &spas, &num_spas); if (num_spas == 0) { *listp = NULL; *countp = 0; return; } regions = mallocarray(num_spas, sizeof(uint16_t *), M_NVDIMM, M_WAITOK); region_counts = mallocarray(num_spas, sizeof(int), M_NVDIMM, M_WAITOK); for (i = 0; i < num_spas; i++) { acpi_nfit_get_region_mappings_by_spa_range(nfitbl, spas[i]->RangeIndex, ®ions[i], ®ion_counts[i]); } maxids = 0; for (i = 0; i < num_spas; i++) { maxids += region_counts[i]; } *listp = mallocarray(maxids, sizeof(nfit_handle_t), M_NVDIMM, M_WAITOK); k = 0; for (i = 0; i < num_spas; i++) { for (j = 0; j < region_counts[i]; j++) (*listp)[k++] = regions[i][j]->DeviceHandle; } qsort((*listp), maxids, sizeof(uint32_t), uint32_t_compare); i = 0; for (j = 1; j < maxids; j++) { if ((*listp)[i] != (*listp)[j]) (*listp)[++i] = (*listp)[j]; } *countp = i + 1; free(region_counts, M_NVDIMM); for (i = 0; i < num_spas; i++) free(regions[i], M_NVDIMM); free(regions, M_NVDIMM); free(spas, M_NVDIMM); } void acpi_nfit_get_spa_range(ACPI_TABLE_NFIT *nfitbl, uint16_t range_index, ACPI_NFIT_SYSTEM_ADDRESS **spa) { *spa = NULL; find_matches(nfitbl, ACPI_NFIT_TYPE_SYSTEM_ADDRESS, offsetof(ACPI_NFIT_SYSTEM_ADDRESS, RangeIndex), UINT16_MAX, range_index, (void **)spa, 1); } void acpi_nfit_get_spa_ranges(ACPI_TABLE_NFIT *nfitbl, ACPI_NFIT_SYSTEM_ADDRESS ***listp, int *countp) { malloc_find_matches(nfitbl, ACPI_NFIT_TYPE_SYSTEM_ADDRESS, 0, 0, 0, (void ***)listp, countp); } void acpi_nfit_get_region_mappings_by_spa_range(ACPI_TABLE_NFIT *nfitbl, uint16_t spa_range_index, ACPI_NFIT_MEMORY_MAP ***listp, int *countp) { malloc_find_matches(nfitbl, ACPI_NFIT_TYPE_MEMORY_MAP, offsetof(ACPI_NFIT_MEMORY_MAP, RangeIndex), UINT16_MAX, spa_range_index, (void ***)listp, countp); } void acpi_nfit_get_control_region(ACPI_TABLE_NFIT *nfitbl, uint16_t control_region_index, ACPI_NFIT_CONTROL_REGION **out) { *out = NULL; find_matches(nfitbl, ACPI_NFIT_TYPE_CONTROL_REGION, offsetof(ACPI_NFIT_CONTROL_REGION, RegionIndex), UINT16_MAX, control_region_index, (void **)out, 1); } void acpi_nfit_get_flush_addrs(ACPI_TABLE_NFIT *nfitbl, nfit_handle_t dimm, uint64_t ***listp, int *countp) { ACPI_NFIT_FLUSH_ADDRESS *subtable; int i; subtable = NULL; find_matches(nfitbl, ACPI_NFIT_TYPE_FLUSH_ADDRESS, offsetof(ACPI_NFIT_FLUSH_ADDRESS, DeviceHandle), UINT32_MAX, dimm, (void **)&subtable, 1); if (subtable == NULL || subtable->HintCount == 0) { *listp = NULL; *countp = 0; return; } *countp = subtable->HintCount; *listp = mallocarray(subtable->HintCount, sizeof(uint64_t *), M_NVDIMM, M_WAITOK); for (i = 0; i < subtable->HintCount; i++) (*listp)[i] = (uint64_t *)(intptr_t)subtable->HintAddress[i]; } void acpi_nfit_get_memory_maps_by_dimm(ACPI_TABLE_NFIT *nfitbl, nfit_handle_t dimm, ACPI_NFIT_MEMORY_MAP ***listp, int *countp) { malloc_find_matches(nfitbl, ACPI_NFIT_TYPE_MEMORY_MAP, offsetof(ACPI_NFIT_MEMORY_MAP, DeviceHandle), UINT32_MAX, dimm, (void ***)listp, countp); }