/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2011-2015 LSI Corp. * Copyright (c) 2013-2015 Avago Technologies * 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. * * Avago Technologies (LSI) MPT-Fusion Host Adapter FreeBSD */ #include __FBSDID("$FreeBSD$"); /* TODO Move headers to mpsvar */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /** * _mapping_clear_map_entry - Clear a particular mapping entry. * @map_entry: map table entry * * Returns nothing. */ static inline void _mapping_clear_map_entry(struct dev_mapping_table *map_entry) { map_entry->physical_id = 0; map_entry->device_info = 0; map_entry->phy_bits = 0; map_entry->dpm_entry_num = MPS_DPM_BAD_IDX; map_entry->dev_handle = 0; map_entry->id = -1; map_entry->missing_count = 0; map_entry->init_complete = 0; map_entry->TLR_bits = (u8)MPI2_SCSIIO_CONTROL_NO_TLR; } /** * _mapping_clear_enc_entry - Clear a particular enclosure table entry. * @enc_entry: enclosure table entry * * Returns nothing. */ static inline void _mapping_clear_enc_entry(struct enc_mapping_table *enc_entry) { enc_entry->enclosure_id = 0; enc_entry->start_index = MPS_MAPTABLE_BAD_IDX; enc_entry->phy_bits = 0; enc_entry->dpm_entry_num = MPS_DPM_BAD_IDX; enc_entry->enc_handle = 0; enc_entry->num_slots = 0; enc_entry->start_slot = 0; enc_entry->missing_count = 0; enc_entry->removal_flag = 0; enc_entry->skip_search = 0; enc_entry->init_complete = 0; } /** * _mapping_commit_enc_entry - write a particular enc entry in DPM page0. * @sc: per adapter object * @enc_entry: enclosure table entry * * Returns 0 for success, non-zero for failure. */ static int _mapping_commit_enc_entry(struct mps_softc *sc, struct enc_mapping_table *et_entry) { Mpi2DriverMap0Entry_t *dpm_entry; struct dev_mapping_table *mt_entry; Mpi2ConfigReply_t mpi_reply; Mpi2DriverMappingPage0_t config_page; if (!sc->is_dpm_enable) return 0; memset(&config_page, 0, sizeof(Mpi2DriverMappingPage0_t)); memcpy(&config_page.Header, (u8 *) sc->dpm_pg0, sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); dpm_entry = (Mpi2DriverMap0Entry_t *)((u8 *)sc->dpm_pg0 + sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); dpm_entry += et_entry->dpm_entry_num; dpm_entry->PhysicalIdentifier.Low = ( 0xFFFFFFFF & et_entry->enclosure_id); dpm_entry->PhysicalIdentifier.High = ( et_entry->enclosure_id >> 32); mt_entry = &sc->mapping_table[et_entry->start_index]; dpm_entry->DeviceIndex = htole16(mt_entry->id); dpm_entry->MappingInformation = et_entry->num_slots; dpm_entry->MappingInformation <<= MPI2_DRVMAP0_MAPINFO_SLOT_SHIFT; dpm_entry->MappingInformation |= et_entry->missing_count; dpm_entry->MappingInformation = htole16(dpm_entry->MappingInformation); dpm_entry->PhysicalBitsMapping = htole32(et_entry->phy_bits); dpm_entry->Reserved1 = 0; mps_dprint(sc, MPS_MAPPING, "%s: Writing DPM entry %d for enclosure.\n", __func__, et_entry->dpm_entry_num); memcpy(&config_page.Entry, (u8 *)dpm_entry, sizeof(Mpi2DriverMap0Entry_t)); if (mps_config_set_dpm_pg0(sc, &mpi_reply, &config_page, et_entry->dpm_entry_num)) { mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: Write of DPM " "entry %d for enclosure failed.\n", __func__, et_entry->dpm_entry_num); dpm_entry->MappingInformation = le16toh(dpm_entry-> MappingInformation); dpm_entry->DeviceIndex = le16toh(dpm_entry->DeviceIndex); dpm_entry->PhysicalBitsMapping = le32toh(dpm_entry->PhysicalBitsMapping); return -1; } dpm_entry->MappingInformation = le16toh(dpm_entry-> MappingInformation); dpm_entry->DeviceIndex = le16toh(dpm_entry->DeviceIndex); dpm_entry->PhysicalBitsMapping = le32toh(dpm_entry->PhysicalBitsMapping); return 0; } /** * _mapping_commit_map_entry - write a particular map table entry in DPM page0. * @sc: per adapter object * @mt_entry: mapping table entry * * Returns 0 for success, non-zero for failure. */ static int _mapping_commit_map_entry(struct mps_softc *sc, struct dev_mapping_table *mt_entry) { Mpi2DriverMap0Entry_t *dpm_entry; Mpi2ConfigReply_t mpi_reply; Mpi2DriverMappingPage0_t config_page; if (!sc->is_dpm_enable) return 0; /* * It's possible that this Map Entry points to a BAD DPM index. This * can happen if the Map Entry is a for a missing device and the DPM * entry that was being used by this device is now being used by some * new device. So, check for a BAD DPM index and just return if so. */ if (mt_entry->dpm_entry_num == MPS_DPM_BAD_IDX) { mps_dprint(sc, MPS_MAPPING, "%s: DPM entry location for target " "%d is invalid. DPM will not be written.\n", __func__, mt_entry->id); return 0; } memset(&config_page, 0, sizeof(Mpi2DriverMappingPage0_t)); memcpy(&config_page.Header, (u8 *)sc->dpm_pg0, sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); dpm_entry = (Mpi2DriverMap0Entry_t *)((u8 *) sc->dpm_pg0 + sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); dpm_entry = dpm_entry + mt_entry->dpm_entry_num; dpm_entry->PhysicalIdentifier.Low = (0xFFFFFFFF & mt_entry->physical_id); dpm_entry->PhysicalIdentifier.High = (mt_entry->physical_id >> 32); dpm_entry->DeviceIndex = htole16(mt_entry->id); dpm_entry->MappingInformation = htole16(mt_entry->missing_count); dpm_entry->PhysicalBitsMapping = 0; dpm_entry->Reserved1 = 0; memcpy(&config_page.Entry, (u8 *)dpm_entry, sizeof(Mpi2DriverMap0Entry_t)); mps_dprint(sc, MPS_MAPPING, "%s: Writing DPM entry %d for target %d.\n", __func__, mt_entry->dpm_entry_num, mt_entry->id); if (mps_config_set_dpm_pg0(sc, &mpi_reply, &config_page, mt_entry->dpm_entry_num)) { mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: Write of DPM " "entry %d for target %d failed.\n", __func__, mt_entry->dpm_entry_num, mt_entry->id); dpm_entry->MappingInformation = le16toh(dpm_entry-> MappingInformation); dpm_entry->DeviceIndex = le16toh(dpm_entry->DeviceIndex); return -1; } dpm_entry->MappingInformation = le16toh(dpm_entry->MappingInformation); dpm_entry->DeviceIndex = le16toh(dpm_entry->DeviceIndex); return 0; } /** * _mapping_get_ir_maprange - get start and end index for IR map range. * @sc: per adapter object * @start_idx: place holder for start index * @end_idx: place holder for end index * * The IR volumes can be mapped either at start or end of the mapping table * this function gets the detail of where IR volume mapping starts and ends * in the device mapping table * * Returns nothing. */ static void _mapping_get_ir_maprange(struct mps_softc *sc, u32 *start_idx, u32 *end_idx) { u16 volume_mapping_flags; u16 ioc_pg8_flags = le16toh(sc->ioc_pg8.Flags); volume_mapping_flags = le16toh(sc->ioc_pg8.IRVolumeMappingFlags) & MPI2_IOCPAGE8_IRFLAGS_MASK_VOLUME_MAPPING_MODE; if (volume_mapping_flags == MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING) { *start_idx = 0; if (ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_RESERVED_TARGETID_0) *start_idx = 1; } else *start_idx = sc->max_devices - sc->max_volumes; *end_idx = *start_idx + sc->max_volumes - 1; } /** * _mapping_get_enc_idx_from_id - get enclosure index from enclosure ID * @sc: per adapter object * @enc_id: enclosure logical identifier * * Returns the index of enclosure entry on success or bad index. */ static u8 _mapping_get_enc_idx_from_id(struct mps_softc *sc, u64 enc_id, u64 phy_bits) { struct enc_mapping_table *et_entry; u8 enc_idx = 0; for (enc_idx = 0; enc_idx < sc->num_enc_table_entries; enc_idx++) { et_entry = &sc->enclosure_table[enc_idx]; if ((et_entry->enclosure_id == le64toh(enc_id)) && (!et_entry->phy_bits || (et_entry->phy_bits & le32toh(phy_bits)))) return enc_idx; } return MPS_ENCTABLE_BAD_IDX; } /** * _mapping_get_enc_idx_from_handle - get enclosure index from handle * @sc: per adapter object * @enc_id: enclosure handle * * Returns the index of enclosure entry on success or bad index. */ static u8 _mapping_get_enc_idx_from_handle(struct mps_softc *sc, u16 handle) { struct enc_mapping_table *et_entry; u8 enc_idx = 0; for (enc_idx = 0; enc_idx < sc->num_enc_table_entries; enc_idx++) { et_entry = &sc->enclosure_table[enc_idx]; if (et_entry->missing_count) continue; if (et_entry->enc_handle == handle) return enc_idx; } return MPS_ENCTABLE_BAD_IDX; } /** * _mapping_get_high_missing_et_idx - get missing enclosure index * @sc: per adapter object * * Search through the enclosure table and identifies the enclosure entry * with high missing count and returns it's index * * Returns the index of enclosure entry on success or bad index. */ static u8 _mapping_get_high_missing_et_idx(struct mps_softc *sc) { struct enc_mapping_table *et_entry; u8 high_missing_count = 0; u8 enc_idx, high_idx = MPS_ENCTABLE_BAD_IDX; for (enc_idx = 0; enc_idx < sc->num_enc_table_entries; enc_idx++) { et_entry = &sc->enclosure_table[enc_idx]; if ((et_entry->missing_count > high_missing_count) && !et_entry->skip_search) { high_missing_count = et_entry->missing_count; high_idx = enc_idx; } } return high_idx; } /** * _mapping_get_high_missing_mt_idx - get missing map table index * @sc: per adapter object * * Search through the map table and identifies the device entry * with high missing count and returns it's index * * Returns the index of map table entry on success or bad index. */ static u32 _mapping_get_high_missing_mt_idx(struct mps_softc *sc) { u32 map_idx, high_idx = MPS_MAPTABLE_BAD_IDX; u8 high_missing_count = 0; u32 start_idx, end_idx, start_idx_ir, end_idx_ir; struct dev_mapping_table *mt_entry; u16 ioc_pg8_flags = le16toh(sc->ioc_pg8.Flags); start_idx = 0; start_idx_ir = 0; end_idx_ir = 0; end_idx = sc->max_devices; if (ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_RESERVED_TARGETID_0) start_idx = 1; if (sc->ir_firmware) { _mapping_get_ir_maprange(sc, &start_idx_ir, &end_idx_ir); if (start_idx == start_idx_ir) start_idx = end_idx_ir + 1; else end_idx = start_idx_ir; } mt_entry = &sc->mapping_table[start_idx]; for (map_idx = start_idx; map_idx < end_idx; map_idx++, mt_entry++) { if (mt_entry->missing_count > high_missing_count) { high_missing_count = mt_entry->missing_count; high_idx = map_idx; } } return high_idx; } /** * _mapping_get_ir_mt_idx_from_wwid - get map table index from volume WWID * @sc: per adapter object * @wwid: world wide unique ID of the volume * * Returns the index of map table entry on success or bad index. */ static u32 _mapping_get_ir_mt_idx_from_wwid(struct mps_softc *sc, u64 wwid) { u32 start_idx, end_idx, map_idx; struct dev_mapping_table *mt_entry; _mapping_get_ir_maprange(sc, &start_idx, &end_idx); mt_entry = &sc->mapping_table[start_idx]; for (map_idx = start_idx; map_idx <= end_idx; map_idx++, mt_entry++) if (mt_entry->physical_id == wwid) return map_idx; return MPS_MAPTABLE_BAD_IDX; } /** * _mapping_get_mt_idx_from_id - get map table index from a device ID * @sc: per adapter object * @dev_id: device identifer (SAS Address) * * Returns the index of map table entry on success or bad index. */ static u32 _mapping_get_mt_idx_from_id(struct mps_softc *sc, u64 dev_id) { u32 map_idx; struct dev_mapping_table *mt_entry; for (map_idx = 0; map_idx < sc->max_devices; map_idx++) { mt_entry = &sc->mapping_table[map_idx]; if (mt_entry->physical_id == dev_id) return map_idx; } return MPS_MAPTABLE_BAD_IDX; } /** * _mapping_get_ir_mt_idx_from_handle - get map table index from volume handle * @sc: per adapter object * @wwid: volume device handle * * Returns the index of map table entry on success or bad index. */ static u32 _mapping_get_ir_mt_idx_from_handle(struct mps_softc *sc, u16 volHandle) { u32 start_idx, end_idx, map_idx; struct dev_mapping_table *mt_entry; _mapping_get_ir_maprange(sc, &start_idx, &end_idx); mt_entry = &sc->mapping_table[start_idx]; for (map_idx = start_idx; map_idx <= end_idx; map_idx++, mt_entry++) if (mt_entry->dev_handle == volHandle) return map_idx; return MPS_MAPTABLE_BAD_IDX; } /** * _mapping_get_mt_idx_from_handle - get map table index from handle * @sc: per adapter object * @dev_id: device handle * * Returns the index of map table entry on success or bad index. */ static u32 _mapping_get_mt_idx_from_handle(struct mps_softc *sc, u16 handle) { u32 map_idx; struct dev_mapping_table *mt_entry; for (map_idx = 0; map_idx < sc->max_devices; map_idx++) { mt_entry = &sc->mapping_table[map_idx]; if (mt_entry->dev_handle == handle) return map_idx; } return MPS_MAPTABLE_BAD_IDX; } /** * _mapping_get_free_ir_mt_idx - get first free index for a volume * @sc: per adapter object * * Search through mapping table for free index for a volume and if no free * index then looks for a volume with high mapping index * * Returns the index of map table entry on success or bad index. */ static u32 _mapping_get_free_ir_mt_idx(struct mps_softc *sc) { u8 high_missing_count = 0; u32 start_idx, end_idx, map_idx; u32 high_idx = MPS_MAPTABLE_BAD_IDX; struct dev_mapping_table *mt_entry; /* * The IN_USE flag should be clear if the entry is available to use. * This flag is cleared on initialization and and when a volume is * deleted. All other times this flag should be set. If, for some * reason, a free entry cannot be found, look for the entry with the * highest missing count just in case there is one. */ _mapping_get_ir_maprange(sc, &start_idx, &end_idx); mt_entry = &sc->mapping_table[start_idx]; for (map_idx = start_idx; map_idx <= end_idx; map_idx++, mt_entry++) { if (!(mt_entry->device_info & MPS_MAP_IN_USE)) return map_idx; if (mt_entry->missing_count > high_missing_count) { high_missing_count = mt_entry->missing_count; high_idx = map_idx; } } if (high_idx == MPS_MAPTABLE_BAD_IDX) { mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: Could not find a " "free entry in the mapping table for a Volume. The mapping " "table is probably corrupt.\n", __func__); } return high_idx; } /** * _mapping_get_free_mt_idx - get first free index for a device * @sc: per adapter object * @start_idx: offset in the table to start search * * Returns the index of map table entry on success or bad index. */ static u32 _mapping_get_free_mt_idx(struct mps_softc *sc, u32 start_idx) { u32 map_idx, max_idx = sc->max_devices; struct dev_mapping_table *mt_entry = &sc->mapping_table[start_idx]; u16 volume_mapping_flags; volume_mapping_flags = le16toh(sc->ioc_pg8.IRVolumeMappingFlags) & MPI2_IOCPAGE8_IRFLAGS_MASK_VOLUME_MAPPING_MODE; if (sc->ir_firmware && (volume_mapping_flags == MPI2_IOCPAGE8_IRFLAGS_HIGH_VOLUME_MAPPING)) max_idx -= sc->max_volumes; for (map_idx = start_idx; map_idx < max_idx; map_idx++, mt_entry++) if (!(mt_entry->device_info & (MPS_MAP_IN_USE | MPS_DEV_RESERVED))) return map_idx; return MPS_MAPTABLE_BAD_IDX; } /** * _mapping_get_dpm_idx_from_id - get DPM index from ID * @sc: per adapter object * @id: volume WWID or enclosure ID or device ID * * Returns the index of DPM entry on success or bad index. */ static u16 _mapping_get_dpm_idx_from_id(struct mps_softc *sc, u64 id, u32 phy_bits) { u16 entry_num; uint64_t PhysicalIdentifier; Mpi2DriverMap0Entry_t *dpm_entry; dpm_entry = (Mpi2DriverMap0Entry_t *)((u8 *)sc->dpm_pg0 + sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); PhysicalIdentifier = dpm_entry->PhysicalIdentifier.High; PhysicalIdentifier = (PhysicalIdentifier << 32) | dpm_entry->PhysicalIdentifier.Low; for (entry_num = 0; entry_num < sc->max_dpm_entries; entry_num++, dpm_entry++) if ((id == PhysicalIdentifier) && (!phy_bits || !dpm_entry->PhysicalBitsMapping || (phy_bits & dpm_entry->PhysicalBitsMapping))) return entry_num; return MPS_DPM_BAD_IDX; } /** * _mapping_get_free_dpm_idx - get first available DPM index * @sc: per adapter object * * Returns the index of DPM entry on success or bad index. */ static u32 _mapping_get_free_dpm_idx(struct mps_softc *sc) { u16 entry_num; Mpi2DriverMap0Entry_t *dpm_entry; u16 current_entry = MPS_DPM_BAD_IDX, missing_cnt, high_missing_cnt = 0; u64 physical_id; struct dev_mapping_table *mt_entry; u32 map_idx; for (entry_num = 0; entry_num < sc->max_dpm_entries; entry_num++) { dpm_entry = (Mpi2DriverMap0Entry_t *) ((u8 *)sc->dpm_pg0 + sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); dpm_entry += entry_num; missing_cnt = dpm_entry->MappingInformation & MPI2_DRVMAP0_MAPINFO_MISSING_MASK; /* * If entry is used and not missing, then this entry can't be * used. Look at next one. */ if (sc->dpm_entry_used[entry_num] && !missing_cnt) continue; /* * If this entry is not used at all, then the missing count * doesn't matter. Just use this one. Otherwise, keep looking * and make sure the entry with the highest missing count is * used. */ if (!sc->dpm_entry_used[entry_num]) { current_entry = entry_num; break; } if ((current_entry == MPS_DPM_BAD_IDX) || (missing_cnt > high_missing_cnt)) { current_entry = entry_num; high_missing_cnt = missing_cnt; } } /* * If an entry has been found to use and it's already marked as used * it means that some device was already using this entry but it's * missing, and that means that the connection between the missing * device's DPM entry and the mapping table needs to be cleared. To do * this, use the Physical ID of the old device still in the DPM entry * to find its mapping table entry, then mark its DPM entry as BAD. */ if ((current_entry != MPS_DPM_BAD_IDX) && sc->dpm_entry_used[current_entry]) { dpm_entry = (Mpi2DriverMap0Entry_t *) ((u8 *)sc->dpm_pg0 + sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); dpm_entry += current_entry; physical_id = dpm_entry->PhysicalIdentifier.High; physical_id = (physical_id << 32) | dpm_entry->PhysicalIdentifier.Low; map_idx = _mapping_get_mt_idx_from_id(sc, physical_id); if (map_idx != MPS_MAPTABLE_BAD_IDX) { mt_entry = &sc->mapping_table[map_idx]; mt_entry->dpm_entry_num = MPS_DPM_BAD_IDX; } } return current_entry; } /** * _mapping_update_ir_missing_cnt - Updates missing count for a volume * @sc: per adapter object * @map_idx: map table index of the volume * @element: IR configuration change element * @wwid: IR volume ID. * * Updates the missing count in the map table and in the DPM entry for a volume * * Returns nothing. */ static void _mapping_update_ir_missing_cnt(struct mps_softc *sc, u32 map_idx, Mpi2EventIrConfigElement_t *element, u64 wwid) { struct dev_mapping_table *mt_entry; u8 missing_cnt, reason = element->ReasonCode, update_dpm = 1; u16 dpm_idx; Mpi2DriverMap0Entry_t *dpm_entry; /* * Depending on the reason code, update the missing count. Always set * the init_complete flag when here, so just do it first. That flag is * used for volumes to make sure that the DPM entry has been updated. * When a volume is deleted, clear the map entry's IN_USE flag so that * the entry can be used again if another volume is created. Also clear * its dev_handle entry so that other functions can't find this volume * by the handle, since it's not defined any longer. */ mt_entry = &sc->mapping_table[map_idx]; mt_entry->init_complete = 1; if ((reason == MPI2_EVENT_IR_CHANGE_RC_ADDED) || (reason == MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED)) { mt_entry->missing_count = 0; } else if (reason == MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED) { if (mt_entry->missing_count < MPS_MAX_MISSING_COUNT) mt_entry->missing_count++; mt_entry->device_info &= ~MPS_MAP_IN_USE; mt_entry->dev_handle = 0; } /* * If persistent mapping is enabled, update the DPM with the new missing * count for the volume. If the DPM index is bad, get a free one. If * it's bad for a volume that's being deleted do nothing because that * volume doesn't have a DPM entry. */ if (!sc->is_dpm_enable) return; dpm_idx = mt_entry->dpm_entry_num; if (dpm_idx == MPS_DPM_BAD_IDX) { if (reason == MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED) { mps_dprint(sc, MPS_MAPPING, "%s: Volume being deleted " "is not in DPM so DPM missing count will not be " "updated.\n", __func__); return; } } if (dpm_idx == MPS_DPM_BAD_IDX) dpm_idx = _mapping_get_free_dpm_idx(sc); /* * Got the DPM entry for the volume or found a free DPM entry if this is * a new volume. Check if the current information is outdated. */ if (dpm_idx != MPS_DPM_BAD_IDX) { dpm_entry = (Mpi2DriverMap0Entry_t *)((u8 *)sc->dpm_pg0 + sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); dpm_entry += dpm_idx; missing_cnt = dpm_entry->MappingInformation & MPI2_DRVMAP0_MAPINFO_MISSING_MASK; if ((mt_entry->physical_id == le64toh(((u64)dpm_entry->PhysicalIdentifier.High << 32) | (u64)dpm_entry->PhysicalIdentifier.Low)) && (missing_cnt == mt_entry->missing_count)) { mps_dprint(sc, MPS_MAPPING, "%s: DPM entry for volume " "with target ID %d does not require an update.\n", __func__, mt_entry->id); update_dpm = 0; } } /* * Update the volume's persistent info if it's new or the ID or missing * count has changed. If a good DPM index has not been found by now, * there is no space left in the DPM table. */ if ((dpm_idx != MPS_DPM_BAD_IDX) && update_dpm) { mps_dprint(sc, MPS_MAPPING, "%s: Update DPM entry for volume " "with target ID %d.\n", __func__, mt_entry->id); mt_entry->dpm_entry_num = dpm_idx; dpm_entry = (Mpi2DriverMap0Entry_t *)((u8 *)sc->dpm_pg0 + sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); dpm_entry += dpm_idx; dpm_entry->PhysicalIdentifier.Low = (0xFFFFFFFF & mt_entry->physical_id); dpm_entry->PhysicalIdentifier.High = (mt_entry->physical_id >> 32); dpm_entry->DeviceIndex = map_idx; dpm_entry->MappingInformation = mt_entry->missing_count; dpm_entry->PhysicalBitsMapping = 0; dpm_entry->Reserved1 = 0; sc->dpm_flush_entry[dpm_idx] = 1; sc->dpm_entry_used[dpm_idx] = 1; } else if (dpm_idx == MPS_DPM_BAD_IDX) { mps_dprint(sc, MPS_INFO | MPS_MAPPING, "%s: No space to add an " "entry in the DPM table for volume with target ID %d.\n", __func__, mt_entry->id); } } /** * _mapping_add_to_removal_table - add DPM index to the removal table * @sc: per adapter object * @dpm_idx: Index of DPM entry to remove * * Adds a DPM entry number to the removal table. * * Returns nothing. */ static void _mapping_add_to_removal_table(struct mps_softc *sc, u16 dpm_idx) { struct map_removal_table *remove_entry; u32 i; /* * This is only used to remove entries from the DPM in the controller. * If DPM is not enabled, just return. */ if (!sc->is_dpm_enable) return; /* * Find the first available removal_table entry and add the new entry * there. */ remove_entry = sc->removal_table; for (i = 0; i < sc->max_devices; i++, remove_entry++) { if (remove_entry->dpm_entry_num != MPS_DPM_BAD_IDX) continue; mps_dprint(sc, MPS_MAPPING, "%s: Adding DPM entry %d to table " "for removal.\n", __func__, dpm_idx); remove_entry->dpm_entry_num = dpm_idx; break; } } /** * _mapping_update_missing_count - Update missing count for a device * @sc: per adapter object * @topo_change: Topology change event entry * * Increment the missing count in the mapping table for a device that is not * responding. If Persitent Mapping is used, increment the DPM entry as well. * Currently, this function only increments the missing count if the device * goes missing, so after initialization has completed. This means that the * missing count can only go from 0 to 1 here. The missing count is incremented * during initialization as well, so that's where a target's missing count can * go past 1. * * Returns nothing. */ static void _mapping_update_missing_count(struct mps_softc *sc, struct _map_topology_change *topo_change) { u16 ioc_pg8_flags = le16toh(sc->ioc_pg8.Flags); u8 entry; struct _map_phy_change *phy_change; u32 map_idx; struct dev_mapping_table *mt_entry; Mpi2DriverMap0Entry_t *dpm_entry; for (entry = 0; entry < topo_change->num_entries; entry++) { phy_change = &topo_change->phy_details[entry]; if (!phy_change->dev_handle || (phy_change->reason != MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING)) continue; map_idx = _mapping_get_mt_idx_from_handle(sc, phy_change-> dev_handle); phy_change->is_processed = 1; if (map_idx == MPS_MAPTABLE_BAD_IDX) { mps_dprint(sc, MPS_INFO | MPS_MAPPING, "%s: device is " "already removed from mapping table\n", __func__); continue; } mt_entry = &sc->mapping_table[map_idx]; if (mt_entry->missing_count < MPS_MAX_MISSING_COUNT) mt_entry->missing_count++; /* * When using Enc/Slot mapping, when a device is removed, it's * mapping table information should be cleared. Otherwise, the * target ID will be incorrect if this same device is re-added * to a different slot. */ if ((ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_MASK_MAPPING_MODE) == MPI2_IOCPAGE8_FLAGS_ENCLOSURE_SLOT_MAPPING) { _mapping_clear_map_entry(mt_entry); } /* * When using device mapping, update the missing count in the * DPM entry, but only if the missing count has changed. */ if (((ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_MASK_MAPPING_MODE) == MPI2_IOCPAGE8_FLAGS_DEVICE_PERSISTENCE_MAPPING) && sc->is_dpm_enable && mt_entry->dpm_entry_num != MPS_DPM_BAD_IDX) { dpm_entry = (Mpi2DriverMap0Entry_t *) ((u8 *)sc->dpm_pg0 + sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); dpm_entry += mt_entry->dpm_entry_num; if (dpm_entry->MappingInformation != mt_entry->missing_count) { dpm_entry->MappingInformation = mt_entry->missing_count; sc->dpm_flush_entry[mt_entry->dpm_entry_num] = 1; } } } } /** * _mapping_find_enc_map_space -find map table entries for enclosure * @sc: per adapter object * @et_entry: enclosure entry * * Search through the mapping table defragment it and provide contiguous * space in map table for a particular enclosure entry * * Returns start index in map table or bad index. */ static u32 _mapping_find_enc_map_space(struct mps_softc *sc, struct enc_mapping_table *et_entry) { u16 vol_mapping_flags; u32 skip_count, end_of_table, map_idx, enc_idx; u16 num_found; u32 start_idx = MPS_MAPTABLE_BAD_IDX; struct dev_mapping_table *mt_entry; struct enc_mapping_table *enc_entry; unsigned char done_flag = 0, found_space; u16 max_num_phy_ids = le16toh(sc->ioc_pg8.MaxNumPhysicalMappedIDs); skip_count = sc->num_rsvd_entries; num_found = 0; vol_mapping_flags = le16toh(sc->ioc_pg8.IRVolumeMappingFlags) & MPI2_IOCPAGE8_IRFLAGS_MASK_VOLUME_MAPPING_MODE; /* * The end of the mapping table depends on where volumes are kept, if * IR is enabled. */ if (!sc->ir_firmware) end_of_table = sc->max_devices; else if (vol_mapping_flags == MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING) end_of_table = sc->max_devices; else end_of_table = sc->max_devices - sc->max_volumes; /* * The skip_count is the number of entries that are reserved at the * beginning of the mapping table. But, it does not include the number * of Physical IDs that are reserved for direct attached devices. Look * through the mapping table after these reserved entries to see if * the devices for this enclosure are already mapped. The PHY bit check * is used to make sure that at least one PHY bit is common between the * enclosure and the device that is already mapped. */ mps_dprint(sc, MPS_MAPPING, "%s: Looking for space in the mapping " "table for added enclosure.\n", __func__); for (map_idx = (max_num_phy_ids + skip_count); map_idx < end_of_table; map_idx++) { mt_entry = &sc->mapping_table[map_idx]; if ((et_entry->enclosure_id == mt_entry->physical_id) && (!mt_entry->phy_bits || (mt_entry->phy_bits & et_entry->phy_bits))) { num_found += 1; if (num_found == et_entry->num_slots) { start_idx = (map_idx - num_found) + 1; mps_dprint(sc, MPS_MAPPING, "%s: Found space " "in the mapping for enclosure at map index " "%d.\n", __func__, start_idx); return start_idx; } } else num_found = 0; } /* * If the enclosure's devices are not mapped already, look for * contiguous entries in the mapping table that are not reserved. If * enough entries are found, return the starting index for that space. */ num_found = 0; for (map_idx = (max_num_phy_ids + skip_count); map_idx < end_of_table; map_idx++) { mt_entry = &sc->mapping_table[map_idx]; if (!(mt_entry->device_info & MPS_DEV_RESERVED)) { num_found += 1; if (num_found == et_entry->num_slots) { start_idx = (map_idx - num_found) + 1; mps_dprint(sc, MPS_MAPPING, "%s: Found space " "in the mapping for enclosure at map index " "%d.\n", __func__, start_idx); return start_idx; } } else num_found = 0; } /* * If here, it means that not enough space in the mapping table was * found to support this enclosure, so go through the enclosure table to * see if any enclosure entries have a missing count. If so, get the * enclosure with the highest missing count and check it to see if there * is enough space for the new enclosure. */ while (!done_flag) { enc_idx = _mapping_get_high_missing_et_idx(sc); if (enc_idx == MPS_ENCTABLE_BAD_IDX) { mps_dprint(sc, MPS_MAPPING, "%s: Not enough space was " "found in the mapping for the added enclosure.\n", __func__); return MPS_MAPTABLE_BAD_IDX; } /* * Found a missing enclosure. Set the skip_search flag so this * enclosure is not checked again for a high missing count if * the loop continues. This way, all missing enclosures can * have their space added together to find enough space in the * mapping table for the added enclosure. The space must be * contiguous. */ mps_dprint(sc, MPS_MAPPING, "%s: Space from a missing " "enclosure was found.\n", __func__); enc_entry = &sc->enclosure_table[enc_idx]; enc_entry->skip_search = 1; /* * Unmark all of the missing enclosure's device's reserved * space. These will be remarked as reserved if this missing * enclosure's space is not used. */ mps_dprint(sc, MPS_MAPPING, "%s: Clear the reserved flag for " "all of the map entries for the enclosure.\n", __func__); mt_entry = &sc->mapping_table[enc_entry->start_index]; for (map_idx = enc_entry->start_index; map_idx < (enc_entry->start_index + enc_entry->num_slots); map_idx++, mt_entry++) mt_entry->device_info &= ~MPS_DEV_RESERVED; /* * Now that space has been unreserved, check again to see if * enough space is available for the new enclosure. */ mps_dprint(sc, MPS_MAPPING, "%s: Check if new mapping space is " "enough for the new enclosure.\n", __func__); found_space = 0; num_found = 0; for (map_idx = (max_num_phy_ids + skip_count); map_idx < end_of_table; map_idx++) { mt_entry = &sc->mapping_table[map_idx]; if (!(mt_entry->device_info & MPS_DEV_RESERVED)) { num_found += 1; if (num_found == et_entry->num_slots) { start_idx = (map_idx - num_found) + 1; found_space = 1; break; } } else num_found = 0; } if (!found_space) continue; /* * If enough space was found, all of the missing enclosures that * will be used for the new enclosure must be added to the * removal table. Then all mappings for the enclosure's devices * and for the enclosure itself need to be cleared. There may be * more than one enclosure to add to the removal table and * clear. */ mps_dprint(sc, MPS_MAPPING, "%s: Found space in the mapping " "for enclosure at map index %d.\n", __func__, start_idx); for (map_idx = start_idx; map_idx < (start_idx + num_found); map_idx++) { enc_entry = sc->enclosure_table; for (enc_idx = 0; enc_idx < sc->num_enc_table_entries; enc_idx++, enc_entry++) { if (map_idx < enc_entry->start_index || map_idx > (enc_entry->start_index + enc_entry->num_slots)) continue; if (!enc_entry->removal_flag) { mps_dprint(sc, MPS_MAPPING, "%s: " "Enclosure %d will be removed from " "the mapping table.\n", __func__, enc_idx); enc_entry->removal_flag = 1; _mapping_add_to_removal_table(sc, enc_entry->dpm_entry_num); } mt_entry = &sc->mapping_table[map_idx]; _mapping_clear_map_entry(mt_entry); if (map_idx == (enc_entry->start_index + enc_entry->num_slots - 1)) _mapping_clear_enc_entry(et_entry); } } /* * During the search for space for this enclosure, some entries * in the mapping table may have been unreserved. Go back and * change all of these to reserved again. Only the enclosures * with the removal_flag set should be left as unreserved. The * skip_search flag needs to be cleared as well so that the * enclosure's space will be looked at the next time space is * needed. */ enc_entry = sc->enclosure_table; for (enc_idx = 0; enc_idx < sc->num_enc_table_entries; enc_idx++, enc_entry++) { if (!enc_entry->removal_flag) { mps_dprint(sc, MPS_MAPPING, "%s: Reset the " "reserved flag for all of the map entries " "for enclosure %d.\n", __func__, enc_idx); mt_entry = &sc->mapping_table[enc_entry-> start_index]; for (map_idx = enc_entry->start_index; map_idx < (enc_entry->start_index + enc_entry->num_slots); map_idx++, mt_entry++) mt_entry->device_info |= MPS_DEV_RESERVED; et_entry->skip_search = 0; } } done_flag = 1; } return start_idx; } /** * _mapping_get_dev_info -get information about newly added devices * @sc: per adapter object * @topo_change: Topology change event entry * * Search through the topology change event list and issues sas device pg0 * requests for the newly added device and reserved entries in tables * * Returns nothing */ static void _mapping_get_dev_info(struct mps_softc *sc, struct _map_topology_change *topo_change) { u16 ioc_pg8_flags = le16toh(sc->ioc_pg8.Flags); Mpi2ConfigReply_t mpi_reply; Mpi2SasDevicePage0_t sas_device_pg0; u8 entry, enc_idx, phy_idx; u32 map_idx, index, device_info; struct _map_phy_change *phy_change, *tmp_phy_change; uint64_t sas_address; struct enc_mapping_table *et_entry; struct dev_mapping_table *mt_entry; u8 add_code = MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED; int rc = 1; for (entry = 0; entry < topo_change->num_entries; entry++) { phy_change = &topo_change->phy_details[entry]; if (phy_change->is_processed || !phy_change->dev_handle || phy_change->reason != MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED) continue; if (mps_config_get_sas_device_pg0(sc, &mpi_reply, &sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, phy_change->dev_handle)) { phy_change->is_processed = 1; continue; } /* * Always get SATA Identify information because this is used * to determine if Start/Stop Unit should be sent to the drive * when the system is shutdown. */ device_info = le32toh(sas_device_pg0.DeviceInfo); sas_address = le32toh(sas_device_pg0.SASAddress.High); sas_address = (sas_address << 32) | le32toh(sas_device_pg0.SASAddress.Low); if ((device_info & MPI2_SAS_DEVICE_INFO_END_DEVICE) && (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)) { rc = mpssas_get_sas_address_for_sata_disk(sc, &sas_address, phy_change->dev_handle, device_info, &phy_change->is_SATA_SSD); if (rc) { mps_dprint(sc, MPS_ERROR, "%s: failed to get " "disk type (SSD or HDD) and SAS Address " "for SATA device with handle 0x%04x\n", __func__, phy_change->dev_handle); } } phy_change->physical_id = sas_address; phy_change->slot = le16toh(sas_device_pg0.Slot); phy_change->device_info = device_info; /* * When using Enc/Slot mapping, if this device is an enclosure * make sure that all of its slots can fit into the mapping * table. */ if ((ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_MASK_MAPPING_MODE) == MPI2_IOCPAGE8_FLAGS_ENCLOSURE_SLOT_MAPPING) { /* * The enclosure should already be in the enclosure * table due to the Enclosure Add event. If not, just * continue, nothing can be done. */ enc_idx = _mapping_get_enc_idx_from_handle(sc, topo_change->enc_handle); if (enc_idx == MPS_ENCTABLE_BAD_IDX) { phy_change->is_processed = 1; mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: " "failed to add the device with handle " "0x%04x because enclosure handle 0x%04x " "is not in the mapping table\n", __func__, phy_change->dev_handle, topo_change->enc_handle); continue; } if (!((phy_change->device_info & MPI2_SAS_DEVICE_INFO_END_DEVICE) && (phy_change->device_info & (MPI2_SAS_DEVICE_INFO_SSP_TARGET | MPI2_SAS_DEVICE_INFO_STP_TARGET | MPI2_SAS_DEVICE_INFO_SATA_DEVICE)))) { phy_change->is_processed = 1; continue; } et_entry = &sc->enclosure_table[enc_idx]; /* * If the enclosure already has a start_index, it's been * mapped, so go to the next Topo change. */ if (et_entry->start_index != MPS_MAPTABLE_BAD_IDX) continue; /* * If the Expander Handle is 0, the devices are direct * attached. In that case, the start_index must be just * after the reserved entries. Otherwise, find space in * the mapping table for the enclosure's devices. */ if (!topo_change->exp_handle) { map_idx = sc->num_rsvd_entries; et_entry->start_index = map_idx; } else { map_idx = _mapping_find_enc_map_space(sc, et_entry); et_entry->start_index = map_idx; /* * If space cannot be found to hold all of the * enclosure's devices in the mapping table, * there's no need to continue checking the * other devices in this event. Set all of the * phy_details for this event (if the change is * for an add) as already processed because none * of these devices can be added to the mapping * table. */ if (et_entry->start_index == MPS_MAPTABLE_BAD_IDX) { mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: failed to add the enclosure " "with ID 0x%016jx because there is " "no free space available in the " "mapping table for all of the " "enclosure's devices.\n", __func__, (uintmax_t)et_entry->enclosure_id); phy_change->is_processed = 1; for (phy_idx = 0; phy_idx < topo_change->num_entries; phy_idx++) { tmp_phy_change = &topo_change->phy_details [phy_idx]; if (tmp_phy_change->reason == add_code) tmp_phy_change-> is_processed = 1; } break; } } /* * Found space in the mapping table for this enclosure. * Initialize each mapping table entry for the * enclosure. */ mps_dprint(sc, MPS_MAPPING, "%s: Initialize %d map " "entries for the enclosure, starting at map index " " %d.\n", __func__, et_entry->num_slots, map_idx); mt_entry = &sc->mapping_table[map_idx]; for (index = map_idx; index < (et_entry->num_slots + map_idx); index++, mt_entry++) { mt_entry->device_info = MPS_DEV_RESERVED; mt_entry->physical_id = et_entry->enclosure_id; mt_entry->phy_bits = et_entry->phy_bits; mt_entry->missing_count = 0; } } } } /** * _mapping_set_mid_to_eid -set map table data from enclosure table * @sc: per adapter object * @et_entry: enclosure entry * * Returns nothing */ static inline void _mapping_set_mid_to_eid(struct mps_softc *sc, struct enc_mapping_table *et_entry) { struct dev_mapping_table *mt_entry; u16 slots = et_entry->num_slots, map_idx; u32 start_idx = et_entry->start_index; if (start_idx != MPS_MAPTABLE_BAD_IDX) { mt_entry = &sc->mapping_table[start_idx]; for (map_idx = 0; map_idx < slots; map_idx++, mt_entry++) mt_entry->physical_id = et_entry->enclosure_id; } } /** * _mapping_clear_removed_entries - mark the entries to be cleared * @sc: per adapter object * * Search through the removal table and mark the entries which needs to be * flushed to DPM and also updates the map table and enclosure table by * clearing the corresponding entries. * * Returns nothing */ static void _mapping_clear_removed_entries(struct mps_softc *sc) { u32 remove_idx; struct map_removal_table *remove_entry; Mpi2DriverMap0Entry_t *dpm_entry; u8 done_flag = 0, num_entries, m, i; struct enc_mapping_table *et_entry, *from, *to; u16 ioc_pg8_flags = le16toh(sc->ioc_pg8.Flags); if (sc->is_dpm_enable) { remove_entry = sc->removal_table; for (remove_idx = 0; remove_idx < sc->max_devices; remove_idx++, remove_entry++) { if (remove_entry->dpm_entry_num != MPS_DPM_BAD_IDX) { dpm_entry = (Mpi2DriverMap0Entry_t *) ((u8 *) sc->dpm_pg0 + sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); dpm_entry += remove_entry->dpm_entry_num; dpm_entry->PhysicalIdentifier.Low = 0; dpm_entry->PhysicalIdentifier.High = 0; dpm_entry->DeviceIndex = 0; dpm_entry->MappingInformation = 0; dpm_entry->PhysicalBitsMapping = 0; sc->dpm_flush_entry[remove_entry-> dpm_entry_num] = 1; sc->dpm_entry_used[remove_entry->dpm_entry_num] = 0; remove_entry->dpm_entry_num = MPS_DPM_BAD_IDX; } } } /* * When using Enc/Slot mapping, if a new enclosure was added and old * enclosure space was needed, the enclosure table may now have gaps * that need to be closed. All enclosure mappings need to be contiguous * so that space can be reused correctly if available. */ if ((ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_MASK_MAPPING_MODE) == MPI2_IOCPAGE8_FLAGS_ENCLOSURE_SLOT_MAPPING) { num_entries = sc->num_enc_table_entries; while (!done_flag) { done_flag = 1; et_entry = sc->enclosure_table; for (i = 0; i < num_entries; i++, et_entry++) { if (!et_entry->enc_handle && et_entry-> init_complete) { done_flag = 0; if (i != (num_entries - 1)) { from = &sc->enclosure_table [i+1]; to = &sc->enclosure_table[i]; for (m = i; m < (num_entries - 1); m++, from++, to++) { _mapping_set_mid_to_eid (sc, to); *to = *from; } _mapping_clear_enc_entry(to); sc->num_enc_table_entries--; num_entries = sc->num_enc_table_entries; } else { _mapping_clear_enc_entry (et_entry); sc->num_enc_table_entries--; num_entries = sc->num_enc_table_entries; } } } } } } /** * _mapping_add_new_device -Add the new device into mapping table * @sc: per adapter object * @topo_change: Topology change event entry * * Search through the topology change event list and update map table, * enclosure table and DPM pages for the newly added devices. * * Returns nothing */ static void _mapping_add_new_device(struct mps_softc *sc, struct _map_topology_change *topo_change) { u8 enc_idx, missing_cnt, is_removed = 0; u16 dpm_idx; u32 search_idx, map_idx; u32 entry; struct dev_mapping_table *mt_entry; struct enc_mapping_table *et_entry; struct _map_phy_change *phy_change; u16 ioc_pg8_flags = le16toh(sc->ioc_pg8.Flags); Mpi2DriverMap0Entry_t *dpm_entry; uint64_t temp64_var; u8 map_shift = MPI2_DRVMAP0_MAPINFO_SLOT_SHIFT; u8 hdr_sz = sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER); u16 max_num_phy_ids = le16toh(sc->ioc_pg8.MaxNumPhysicalMappedIDs); for (entry = 0; entry < topo_change->num_entries; entry++) { phy_change = &topo_change->phy_details[entry]; if (phy_change->is_processed) continue; if (phy_change->reason != MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED || !phy_change->dev_handle) { phy_change->is_processed = 1; continue; } if ((ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_MASK_MAPPING_MODE) == MPI2_IOCPAGE8_FLAGS_ENCLOSURE_SLOT_MAPPING) { enc_idx = _mapping_get_enc_idx_from_handle (sc, topo_change->enc_handle); if (enc_idx == MPS_ENCTABLE_BAD_IDX) { phy_change->is_processed = 1; mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: " "failed to add the device with handle " "0x%04x because enclosure handle 0x%04x " "is not in the mapping table\n", __func__, phy_change->dev_handle, topo_change->enc_handle); continue; } /* * If the enclosure's start_index is BAD here, it means * that there is no room in the mapping table to cover * all of the devices that could be in the enclosure. * There's no reason to process any of the devices for * this enclosure since they can't be mapped. */ et_entry = &sc->enclosure_table[enc_idx]; if (et_entry->start_index == MPS_MAPTABLE_BAD_IDX) { phy_change->is_processed = 1; mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: " "failed to add the device with handle " "0x%04x because there is no free space " "available in the mapping table\n", __func__, phy_change->dev_handle); continue; } /* * Add this device to the mapping table at the correct * offset where space was found to map the enclosure. * Then setup the DPM entry information if being used. */ map_idx = et_entry->start_index + phy_change->slot - et_entry->start_slot; mt_entry = &sc->mapping_table[map_idx]; mt_entry->physical_id = phy_change->physical_id; mt_entry->id = map_idx; mt_entry->dev_handle = phy_change->dev_handle; mt_entry->missing_count = 0; mt_entry->dpm_entry_num = et_entry->dpm_entry_num; mt_entry->device_info = phy_change->device_info | (MPS_DEV_RESERVED | MPS_MAP_IN_USE); if (sc->is_dpm_enable) { dpm_idx = et_entry->dpm_entry_num; if (dpm_idx == MPS_DPM_BAD_IDX) dpm_idx = _mapping_get_dpm_idx_from_id (sc, et_entry->enclosure_id, et_entry->phy_bits); if (dpm_idx == MPS_DPM_BAD_IDX) { dpm_idx = _mapping_get_free_dpm_idx(sc); if (dpm_idx != MPS_DPM_BAD_IDX) { dpm_entry = (Mpi2DriverMap0Entry_t *) ((u8 *) sc->dpm_pg0 + hdr_sz); dpm_entry += dpm_idx; dpm_entry-> PhysicalIdentifier.Low = (0xFFFFFFFF & et_entry->enclosure_id); dpm_entry-> PhysicalIdentifier.High = (et_entry->enclosure_id >> 32); dpm_entry->DeviceIndex = (U16)et_entry->start_index; dpm_entry->MappingInformation = et_entry->num_slots; dpm_entry->MappingInformation <<= map_shift; dpm_entry->PhysicalBitsMapping = et_entry->phy_bits; et_entry->dpm_entry_num = dpm_idx; sc->dpm_entry_used[dpm_idx] = 1; sc->dpm_flush_entry[dpm_idx] = 1; phy_change->is_processed = 1; } else { phy_change->is_processed = 1; mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: failed " "to add the device with " "handle 0x%04x to " "persistent table because " "there is no free space " "available\n", __func__, phy_change->dev_handle); } } else { et_entry->dpm_entry_num = dpm_idx; mt_entry->dpm_entry_num = dpm_idx; } } et_entry->init_complete = 1; } else if ((ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_MASK_MAPPING_MODE) == MPI2_IOCPAGE8_FLAGS_DEVICE_PERSISTENCE_MAPPING) { /* * Get the mapping table index for this device. If it's * not in the mapping table yet, find a free entry if * one is available. If there are no free entries, look * for the entry that has the highest missing count. If * none of that works to find an entry in the mapping * table, there is a problem. Log a message and just * continue on. */ map_idx = _mapping_get_mt_idx_from_id (sc, phy_change->physical_id); if (map_idx == MPS_MAPTABLE_BAD_IDX) { search_idx = sc->num_rsvd_entries; if (topo_change->exp_handle) search_idx += max_num_phy_ids; map_idx = _mapping_get_free_mt_idx(sc, search_idx); } /* * If an entry will be used that has a missing device, * clear its entry from the DPM in the controller. */ if (map_idx == MPS_MAPTABLE_BAD_IDX) { map_idx = _mapping_get_high_missing_mt_idx(sc); if (map_idx != MPS_MAPTABLE_BAD_IDX) { mt_entry = &sc->mapping_table[map_idx]; _mapping_add_to_removal_table(sc, mt_entry->dpm_entry_num); is_removed = 1; mt_entry->init_complete = 0; } } if (map_idx != MPS_MAPTABLE_BAD_IDX) { mt_entry = &sc->mapping_table[map_idx]; mt_entry->physical_id = phy_change->physical_id; mt_entry->id = map_idx; mt_entry->dev_handle = phy_change->dev_handle; mt_entry->missing_count = 0; mt_entry->device_info = phy_change->device_info | (MPS_DEV_RESERVED | MPS_MAP_IN_USE); } else { phy_change->is_processed = 1; mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: " "failed to add the device with handle " "0x%04x because there is no free space " "available in the mapping table\n", __func__, phy_change->dev_handle); continue; } if (sc->is_dpm_enable) { if (mt_entry->dpm_entry_num != MPS_DPM_BAD_IDX) { dpm_idx = mt_entry->dpm_entry_num; dpm_entry = (Mpi2DriverMap0Entry_t *) ((u8 *)sc->dpm_pg0 + hdr_sz); dpm_entry += dpm_idx; missing_cnt = dpm_entry-> MappingInformation & MPI2_DRVMAP0_MAPINFO_MISSING_MASK; temp64_var = dpm_entry-> PhysicalIdentifier.High; temp64_var = (temp64_var << 32) | dpm_entry->PhysicalIdentifier.Low; /* * If the Mapping Table's info is not * the same as the DPM entry, clear the * init_complete flag so that it's * updated. */ if ((mt_entry->physical_id == temp64_var) && !missing_cnt) mt_entry->init_complete = 1; else mt_entry->init_complete = 0; } else { dpm_idx = _mapping_get_free_dpm_idx(sc); mt_entry->init_complete = 0; } if (dpm_idx != MPS_DPM_BAD_IDX && !mt_entry->init_complete) { mt_entry->dpm_entry_num = dpm_idx; dpm_entry = (Mpi2DriverMap0Entry_t *) ((u8 *)sc->dpm_pg0 + hdr_sz); dpm_entry += dpm_idx; dpm_entry->PhysicalIdentifier.Low = (0xFFFFFFFF & mt_entry->physical_id); dpm_entry->PhysicalIdentifier.High = (mt_entry->physical_id >> 32); dpm_entry->DeviceIndex = (U16) map_idx; dpm_entry->MappingInformation = 0; dpm_entry->PhysicalBitsMapping = 0; sc->dpm_entry_used[dpm_idx] = 1; sc->dpm_flush_entry[dpm_idx] = 1; phy_change->is_processed = 1; } else if (dpm_idx == MPS_DPM_BAD_IDX) { phy_change->is_processed = 1; mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: failed to add the device with " "handle 0x%04x to persistent table " "because there is no free space " "available\n", __func__, phy_change->dev_handle); } } mt_entry->init_complete = 1; } phy_change->is_processed = 1; } if (is_removed) _mapping_clear_removed_entries(sc); } /** * _mapping_flush_dpm_pages -Flush the DPM pages to NVRAM * @sc: per adapter object * * Returns nothing */ static void _mapping_flush_dpm_pages(struct mps_softc *sc) { Mpi2DriverMap0Entry_t *dpm_entry; Mpi2ConfigReply_t mpi_reply; Mpi2DriverMappingPage0_t config_page; u16 entry_num; for (entry_num = 0; entry_num < sc->max_dpm_entries; entry_num++) { if (!sc->dpm_flush_entry[entry_num]) continue; memset(&config_page, 0, sizeof(Mpi2DriverMappingPage0_t)); memcpy(&config_page.Header, (u8 *)sc->dpm_pg0, sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); dpm_entry = (Mpi2DriverMap0Entry_t *) ((u8 *)sc->dpm_pg0 + sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); dpm_entry += entry_num; dpm_entry->MappingInformation = htole16(dpm_entry-> MappingInformation); dpm_entry->DeviceIndex = htole16(dpm_entry->DeviceIndex); dpm_entry->PhysicalBitsMapping = htole32(dpm_entry-> PhysicalBitsMapping); memcpy(&config_page.Entry, (u8 *)dpm_entry, sizeof(Mpi2DriverMap0Entry_t)); /* TODO-How to handle failed writes? */ mps_dprint(sc, MPS_MAPPING, "%s: Flushing DPM entry %d.\n", __func__, entry_num); if (mps_config_set_dpm_pg0(sc, &mpi_reply, &config_page, entry_num)) { mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: Flush of " "DPM entry %d for device failed\n", __func__, entry_num); } else sc->dpm_flush_entry[entry_num] = 0; dpm_entry->MappingInformation = le16toh(dpm_entry-> MappingInformation); dpm_entry->DeviceIndex = le16toh(dpm_entry->DeviceIndex); dpm_entry->PhysicalBitsMapping = le32toh(dpm_entry-> PhysicalBitsMapping); } } /** * _mapping_allocate_memory- allocates the memory required for mapping tables * @sc: per adapter object * * Allocates the memory for all the tables required for host mapping * * Return 0 on success or non-zero on failure. */ int mps_mapping_allocate_memory(struct mps_softc *sc) { uint32_t dpm_pg0_sz; sc->mapping_table = malloc((sizeof(struct dev_mapping_table) * sc->max_devices), M_MPT2, M_ZERO|M_NOWAIT); if (!sc->mapping_table) goto free_resources; sc->removal_table = malloc((sizeof(struct map_removal_table) * sc->max_devices), M_MPT2, M_ZERO|M_NOWAIT); if (!sc->removal_table) goto free_resources; sc->enclosure_table = malloc((sizeof(struct enc_mapping_table) * sc->max_enclosures), M_MPT2, M_ZERO|M_NOWAIT); if (!sc->enclosure_table) goto free_resources; sc->dpm_entry_used = malloc((sizeof(u8) * sc->max_dpm_entries), M_MPT2, M_ZERO|M_NOWAIT); if (!sc->dpm_entry_used) goto free_resources; sc->dpm_flush_entry = malloc((sizeof(u8) * sc->max_dpm_entries), M_MPT2, M_ZERO|M_NOWAIT); if (!sc->dpm_flush_entry) goto free_resources; dpm_pg0_sz = sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER) + (sc->max_dpm_entries * sizeof(MPI2_CONFIG_PAGE_DRIVER_MAP0_ENTRY)); sc->dpm_pg0 = malloc(dpm_pg0_sz, M_MPT2, M_ZERO|M_NOWAIT); if (!sc->dpm_pg0) { printf("%s: memory alloc failed for dpm page; disabling dpm\n", __func__); sc->is_dpm_enable = 0; } return 0; free_resources: free(sc->mapping_table, M_MPT2); free(sc->removal_table, M_MPT2); free(sc->enclosure_table, M_MPT2); free(sc->dpm_entry_used, M_MPT2); free(sc->dpm_flush_entry, M_MPT2); free(sc->dpm_pg0, M_MPT2); printf("%s: device initialization failed due to failure in mapping " "table memory allocation\n", __func__); return -1; } /** * mps_mapping_free_memory- frees the memory allocated for mapping tables * @sc: per adapter object * * Returns nothing. */ void mps_mapping_free_memory(struct mps_softc *sc) { free(sc->mapping_table, M_MPT2); free(sc->removal_table, M_MPT2); free(sc->enclosure_table, M_MPT2); free(sc->dpm_entry_used, M_MPT2); free(sc->dpm_flush_entry, M_MPT2); free(sc->dpm_pg0, M_MPT2); } static void _mapping_process_dpm_pg0(struct mps_softc *sc) { u8 missing_cnt, enc_idx; u16 slot_id, entry_num, num_slots; u32 map_idx, dev_idx, start_idx, end_idx; struct dev_mapping_table *mt_entry; Mpi2DriverMap0Entry_t *dpm_entry; u16 ioc_pg8_flags = le16toh(sc->ioc_pg8.Flags); u16 max_num_phy_ids = le16toh(sc->ioc_pg8.MaxNumPhysicalMappedIDs); struct enc_mapping_table *et_entry; u64 physical_id; u32 phy_bits = 0; /* * start_idx and end_idx are only used for IR. */ if (sc->ir_firmware) _mapping_get_ir_maprange(sc, &start_idx, &end_idx); /* * Look through all of the DPM entries that were read from the * controller and copy them over to the driver's internal table if they * have a non-zero ID. At this point, any ID with a value of 0 would be * invalid, so don't copy it. */ mps_dprint(sc, MPS_MAPPING, "%s: Start copy of %d DPM entries into the " "mapping table.\n", __func__, sc->max_dpm_entries); dpm_entry = (Mpi2DriverMap0Entry_t *) ((uint8_t *) sc->dpm_pg0 + sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); for (entry_num = 0; entry_num < sc->max_dpm_entries; entry_num++, dpm_entry++) { physical_id = dpm_entry->PhysicalIdentifier.High; physical_id = (physical_id << 32) | dpm_entry->PhysicalIdentifier.Low; if (!physical_id) { sc->dpm_entry_used[entry_num] = 0; continue; } sc->dpm_entry_used[entry_num] = 1; dpm_entry->MappingInformation = le16toh(dpm_entry-> MappingInformation); missing_cnt = dpm_entry->MappingInformation & MPI2_DRVMAP0_MAPINFO_MISSING_MASK; dev_idx = le16toh(dpm_entry->DeviceIndex); phy_bits = le32toh(dpm_entry->PhysicalBitsMapping); /* * Volumes are at special locations in the mapping table so * account for that. Volume mapping table entries do not depend * on the type of mapping, so continue the loop after adding * volumes to the mapping table. */ if (sc->ir_firmware && (dev_idx >= start_idx) && (dev_idx <= end_idx)) { mt_entry = &sc->mapping_table[dev_idx]; mt_entry->physical_id = dpm_entry->PhysicalIdentifier.High; mt_entry->physical_id = (mt_entry->physical_id << 32) | dpm_entry->PhysicalIdentifier.Low; mt_entry->id = dev_idx; mt_entry->missing_count = missing_cnt; mt_entry->dpm_entry_num = entry_num; mt_entry->device_info = MPS_DEV_RESERVED; continue; } if ((ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_MASK_MAPPING_MODE) == MPI2_IOCPAGE8_FLAGS_ENCLOSURE_SLOT_MAPPING) { /* * The dev_idx for an enclosure is the start index. If * the start index is within the controller's default * enclosure area, set the number of slots for this * enclosure to the max allowed. Otherwise, it should be * a normal enclosure and the number of slots is in the * DPM entry's Mapping Information. */ if (dev_idx < (sc->num_rsvd_entries + max_num_phy_ids)) { slot_id = 0; if (ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_DA_START_SLOT_1) slot_id = 1; num_slots = max_num_phy_ids; } else { slot_id = 0; num_slots = dpm_entry->MappingInformation & MPI2_DRVMAP0_MAPINFO_SLOT_MASK; num_slots >>= MPI2_DRVMAP0_MAPINFO_SLOT_SHIFT; } enc_idx = sc->num_enc_table_entries; if (enc_idx >= sc->max_enclosures) { mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: " "Number of enclosure entries in DPM exceed " "the max allowed of %d.\n", __func__, sc->max_enclosures); break; } sc->num_enc_table_entries++; et_entry = &sc->enclosure_table[enc_idx]; physical_id = dpm_entry->PhysicalIdentifier.High; et_entry->enclosure_id = (physical_id << 32) | dpm_entry->PhysicalIdentifier.Low; et_entry->start_index = dev_idx; et_entry->dpm_entry_num = entry_num; et_entry->num_slots = num_slots; et_entry->start_slot = slot_id; et_entry->missing_count = missing_cnt; et_entry->phy_bits = phy_bits; /* * Initialize all entries for this enclosure in the * mapping table and mark them as reserved. The actual * devices have not been processed yet but when they are * they will use these entries. If an entry is found * that already has a valid DPM index, the mapping table * is corrupt. This can happen if the mapping type is * changed without clearing all of the DPM entries in * the controller. */ mt_entry = &sc->mapping_table[dev_idx]; for (map_idx = dev_idx; map_idx < (dev_idx + num_slots); map_idx++, mt_entry++) { if (mt_entry->dpm_entry_num != MPS_DPM_BAD_IDX) { mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: Conflict in mapping table for " "enclosure %d device %d\n", __func__, enc_idx, map_idx); break; } physical_id = dpm_entry->PhysicalIdentifier.High; mt_entry->physical_id = (physical_id << 32) | dpm_entry->PhysicalIdentifier.Low; mt_entry->phy_bits = phy_bits; mt_entry->id = dev_idx; mt_entry->dpm_entry_num = entry_num; mt_entry->missing_count = missing_cnt; mt_entry->device_info = MPS_DEV_RESERVED; } } else if ((ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_MASK_MAPPING_MODE) == MPI2_IOCPAGE8_FLAGS_DEVICE_PERSISTENCE_MAPPING) { /* * Device mapping, so simply copy the DPM entries to the * mapping table, but check for a corrupt mapping table * (as described above in Enc/Slot mapping). */ map_idx = dev_idx; mt_entry = &sc->mapping_table[map_idx]; if (mt_entry->dpm_entry_num != MPS_DPM_BAD_IDX) { mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: " "Conflict in mapping table for device %d\n", __func__, map_idx); break; } physical_id = dpm_entry->PhysicalIdentifier.High; mt_entry->physical_id = (physical_id << 32) | dpm_entry->PhysicalIdentifier.Low; mt_entry->phy_bits = phy_bits; mt_entry->id = dev_idx; mt_entry->missing_count = missing_cnt; mt_entry->dpm_entry_num = entry_num; mt_entry->device_info = MPS_DEV_RESERVED; } } /*close the loop for DPM table */ } /* * mps_mapping_check_devices - start of the day check for device availabilty * @sc: per adapter object * * Returns nothing. */ void mps_mapping_check_devices(void *data) { u32 i; struct dev_mapping_table *mt_entry; struct mps_softc *sc = (struct mps_softc *)data; u16 ioc_pg8_flags = le16toh(sc->ioc_pg8.Flags); struct enc_mapping_table *et_entry; u32 start_idx = 0, end_idx = 0; u8 stop_device_checks = 0; MPS_FUNCTRACE(sc); /* * Clear this flag so that this function is never called again except * within this function if the check needs to be done again. The * purpose is to check for missing devices that are currently in the * mapping table so do this only at driver init after discovery. */ sc->track_mapping_events = 0; /* * callout synchronization * This is used to prevent race conditions for the callout. */ mps_dprint(sc, MPS_MAPPING, "%s: Start check for missing devices.\n", __func__); mtx_assert(&sc->mps_mtx, MA_OWNED); if ((callout_pending(&sc->device_check_callout)) || (!callout_active(&sc->device_check_callout))) { mps_dprint(sc, MPS_MAPPING, "%s: Device Check Callout is " "already pending or not active.\n", __func__); return; } callout_deactivate(&sc->device_check_callout); /* * Use callout to check if any devices in the mapping table have been * processed yet. If ALL devices are marked as not init_complete, no * devices have been processed and mapped. Until devices are mapped * there's no reason to mark them as missing. Continue resetting this * callout until devices have been mapped. */ if ((ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_MASK_MAPPING_MODE) == MPI2_IOCPAGE8_FLAGS_ENCLOSURE_SLOT_MAPPING) { et_entry = sc->enclosure_table; for (i = 0; i < sc->num_enc_table_entries; i++, et_entry++) { if (et_entry->init_complete) { stop_device_checks = 1; break; } } } else if ((ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_MASK_MAPPING_MODE) == MPI2_IOCPAGE8_FLAGS_DEVICE_PERSISTENCE_MAPPING) { mt_entry = sc->mapping_table; for (i = 0; i < sc->max_devices; i++, mt_entry++) { if (mt_entry->init_complete) { stop_device_checks = 1; break; } } } /* * Setup another callout check after a delay. Keep doing this until * devices are mapped. */ if (!stop_device_checks) { mps_dprint(sc, MPS_MAPPING, "%s: No devices have been mapped. " "Reset callout to check again after a %d second delay.\n", __func__, MPS_MISSING_CHECK_DELAY); callout_reset(&sc->device_check_callout, MPS_MISSING_CHECK_DELAY * hz, mps_mapping_check_devices, sc); return; } mps_dprint(sc, MPS_MAPPING, "%s: Device check complete.\n", __func__); /* * Depending on the mapping type, check if devices have been processed * and update their missing counts if not processed. */ if ((ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_MASK_MAPPING_MODE) == MPI2_IOCPAGE8_FLAGS_ENCLOSURE_SLOT_MAPPING) { et_entry = sc->enclosure_table; for (i = 0; i < sc->num_enc_table_entries; i++, et_entry++) { if (!et_entry->init_complete) { if (et_entry->missing_count < MPS_MAX_MISSING_COUNT) { mps_dprint(sc, MPS_MAPPING, "%s: " "Enclosure %d is missing from the " "topology. Update its missing " "count.\n", __func__, i); et_entry->missing_count++; if (et_entry->dpm_entry_num != MPS_DPM_BAD_IDX) { _mapping_commit_enc_entry(sc, et_entry); } } et_entry->init_complete = 1; } } if (!sc->ir_firmware) return; _mapping_get_ir_maprange(sc, &start_idx, &end_idx); mt_entry = &sc->mapping_table[start_idx]; } else if ((ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_MASK_MAPPING_MODE) == MPI2_IOCPAGE8_FLAGS_DEVICE_PERSISTENCE_MAPPING) { start_idx = 0; end_idx = sc->max_devices - 1; mt_entry = sc->mapping_table; } /* * The start and end indices have been set above according to the * mapping type. Go through these mappings and update any entries that * do not have the init_complete flag set, which means they are missing. */ if (end_idx == 0) return; for (i = start_idx; i < (end_idx + 1); i++, mt_entry++) { if (mt_entry->device_info & MPS_DEV_RESERVED && !mt_entry->physical_id) mt_entry->init_complete = 1; else if (mt_entry->device_info & MPS_DEV_RESERVED) { if (!mt_entry->init_complete) { mps_dprint(sc, MPS_MAPPING, "%s: Device in " "mapping table at index %d is missing from " "topology. Update its missing count.\n", __func__, i); if (mt_entry->missing_count < MPS_MAX_MISSING_COUNT) { mt_entry->missing_count++; if (mt_entry->dpm_entry_num != MPS_DPM_BAD_IDX) { _mapping_commit_map_entry(sc, mt_entry); } } mt_entry->init_complete = 1; } } } } /** * mps_mapping_initialize - initialize mapping tables * @sc: per adapter object * * Read controller persitant mapping tables into internal data area. * * Return 0 for success or non-zero for failure. */ int mps_mapping_initialize(struct mps_softc *sc) { uint16_t volume_mapping_flags, dpm_pg0_sz; uint32_t i; Mpi2ConfigReply_t mpi_reply; int error; uint8_t retry_count; uint16_t ioc_pg8_flags = le16toh(sc->ioc_pg8.Flags); /* The additional 1 accounts for the virtual enclosure * created for the controller */ sc->max_enclosures = sc->facts->MaxEnclosures + 1; sc->max_expanders = sc->facts->MaxSasExpanders; sc->max_volumes = sc->facts->MaxVolumes; sc->max_devices = sc->facts->MaxTargets + sc->max_volumes; sc->pending_map_events = 0; sc->num_enc_table_entries = 0; sc->num_rsvd_entries = 0; sc->max_dpm_entries = sc->ioc_pg8.MaxPersistentEntries; sc->is_dpm_enable = (sc->max_dpm_entries) ? 1 : 0; sc->track_mapping_events = 0; mps_dprint(sc, MPS_MAPPING, "%s: Mapping table has a max of %d entries " "and DPM has a max of %d entries.\n", __func__, sc->max_devices, sc->max_dpm_entries); if (ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_DISABLE_PERSISTENT_MAPPING) sc->is_dpm_enable = 0; if (ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_RESERVED_TARGETID_0) sc->num_rsvd_entries = 1; volume_mapping_flags = sc->ioc_pg8.IRVolumeMappingFlags & MPI2_IOCPAGE8_IRFLAGS_MASK_VOLUME_MAPPING_MODE; if (sc->ir_firmware && (volume_mapping_flags == MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING)) sc->num_rsvd_entries += sc->max_volumes; error = mps_mapping_allocate_memory(sc); if (error) return (error); for (i = 0; i < sc->max_devices; i++) _mapping_clear_map_entry(sc->mapping_table + i); for (i = 0; i < sc->max_enclosures; i++) _mapping_clear_enc_entry(sc->enclosure_table + i); for (i = 0; i < sc->max_devices; i++) { sc->removal_table[i].dev_handle = 0; sc->removal_table[i].dpm_entry_num = MPS_DPM_BAD_IDX; } memset(sc->dpm_entry_used, 0, sc->max_dpm_entries); memset(sc->dpm_flush_entry, 0, sc->max_dpm_entries); if (sc->is_dpm_enable) { dpm_pg0_sz = sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER) + (sc->max_dpm_entries * sizeof(MPI2_CONFIG_PAGE_DRIVER_MAP0_ENTRY)); retry_count = 0; retry_read_dpm: if (mps_config_get_dpm_pg0(sc, &mpi_reply, sc->dpm_pg0, dpm_pg0_sz)) { mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: DPM page " "read failed.\n", __func__); if (retry_count < 3) { retry_count++; goto retry_read_dpm; } sc->is_dpm_enable = 0; } } if (sc->is_dpm_enable) _mapping_process_dpm_pg0(sc); else { mps_dprint(sc, MPS_MAPPING, "%s: DPM processing is disabled. " "Device mappings will not persist across reboots or " "resets.\n", __func__); } sc->track_mapping_events = 1; return 0; } /** * mps_mapping_exit - clear mapping table and associated memory * @sc: per adapter object * * Returns nothing. */ void mps_mapping_exit(struct mps_softc *sc) { _mapping_flush_dpm_pages(sc); mps_mapping_free_memory(sc); } /** * mps_mapping_get_tid - return the target id for sas device and handle * @sc: per adapter object * @sas_address: sas address of the device * @handle: device handle * * Returns valid target ID on success or BAD_ID. */ unsigned int mps_mapping_get_tid(struct mps_softc *sc, uint64_t sas_address, u16 handle) { u32 map_idx; struct dev_mapping_table *mt_entry; for (map_idx = 0; map_idx < sc->max_devices; map_idx++) { mt_entry = &sc->mapping_table[map_idx]; if (mt_entry->dev_handle == handle && mt_entry->physical_id == sas_address) return mt_entry->id; } return MPS_MAP_BAD_ID; } /** * mps_mapping_get_tid_from_handle - find a target id in mapping table using * only the dev handle. This is just a wrapper function for the local function * _mapping_get_mt_idx_from_handle. * @sc: per adapter object * @handle: device handle * * Returns valid target ID on success or BAD_ID. */ unsigned int mps_mapping_get_tid_from_handle(struct mps_softc *sc, u16 handle) { return (_mapping_get_mt_idx_from_handle(sc, handle)); } /** * mps_mapping_get_raid_tid - return the target id for raid device * @sc: per adapter object * @wwid: world wide identifier for raid volume * @volHandle: volume device handle * * Returns valid target ID on success or BAD_ID. */ unsigned int mps_mapping_get_raid_tid(struct mps_softc *sc, u64 wwid, u16 volHandle) { u32 start_idx, end_idx, map_idx; struct dev_mapping_table *mt_entry; _mapping_get_ir_maprange(sc, &start_idx, &end_idx); mt_entry = &sc->mapping_table[start_idx]; for (map_idx = start_idx; map_idx <= end_idx; map_idx++, mt_entry++) { if (mt_entry->dev_handle == volHandle && mt_entry->physical_id == wwid) return mt_entry->id; } return MPS_MAP_BAD_ID; } /** * mps_mapping_get_raid_tid_from_handle - find raid device in mapping table * using only the volume dev handle. This is just a wrapper function for the * local function _mapping_get_ir_mt_idx_from_handle. * @sc: per adapter object * @volHandle: volume device handle * * Returns valid target ID on success or BAD_ID. */ unsigned int mps_mapping_get_raid_tid_from_handle(struct mps_softc *sc, u16 volHandle) { return (_mapping_get_ir_mt_idx_from_handle(sc, volHandle)); } /** * mps_mapping_enclosure_dev_status_change_event - handle enclosure events * @sc: per adapter object * @event_data: event data payload * * Return nothing. */ void mps_mapping_enclosure_dev_status_change_event(struct mps_softc *sc, Mpi2EventDataSasEnclDevStatusChange_t *event_data) { u8 enc_idx, missing_count; struct enc_mapping_table *et_entry; Mpi2DriverMap0Entry_t *dpm_entry; u16 ioc_pg8_flags = le16toh(sc->ioc_pg8.Flags); u8 map_shift = MPI2_DRVMAP0_MAPINFO_SLOT_SHIFT; u8 update_phy_bits = 0; u32 saved_phy_bits; uint64_t temp64_var; if ((ioc_pg8_flags & MPI2_IOCPAGE8_FLAGS_MASK_MAPPING_MODE) != MPI2_IOCPAGE8_FLAGS_ENCLOSURE_SLOT_MAPPING) goto out; dpm_entry = (Mpi2DriverMap0Entry_t *)((u8 *)sc->dpm_pg0 + sizeof(MPI2_CONFIG_EXTENDED_PAGE_HEADER)); if (event_data->ReasonCode == MPI2_EVENT_SAS_ENCL_RC_ADDED) { if (!event_data->NumSlots) { mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: Enclosure " "with handle = 0x%x reported 0 slots.\n", __func__, le16toh(event_data->EnclosureHandle)); goto out; } temp64_var = event_data->EnclosureLogicalID.High; temp64_var = (temp64_var << 32) | event_data->EnclosureLogicalID.Low; enc_idx = _mapping_get_enc_idx_from_id(sc, temp64_var, event_data->PhyBits); /* * If the Added enclosure is already in the Enclosure Table, * make sure that all the enclosure info is up to date. If * the enclosure was missing and has just been added back, or if * the enclosure's Phy Bits have changed, clear the missing * count and update the Phy Bits in the mapping table and in the * DPM, if it's being used. */ if (enc_idx != MPS_ENCTABLE_BAD_IDX) { et_entry = &sc->enclosure_table[enc_idx]; if (et_entry->init_complete && !et_entry->missing_count) { mps_dprint(sc, MPS_MAPPING, "%s: Enclosure %d " "is already present with handle = 0x%x\n", __func__, enc_idx, et_entry->enc_handle); goto out; } et_entry->enc_handle = le16toh(event_data-> EnclosureHandle); et_entry->start_slot = le16toh(event_data->StartSlot); saved_phy_bits = et_entry->phy_bits; et_entry->phy_bits |= le32toh(event_data->PhyBits); if (saved_phy_bits != et_entry->phy_bits) update_phy_bits = 1; if (et_entry->missing_count || update_phy_bits) { et_entry->missing_count = 0; if (sc->is_dpm_enable && et_entry->dpm_entry_num != MPS_DPM_BAD_IDX) { dpm_entry += et_entry->dpm_entry_num; missing_count = (u8)(dpm_entry->MappingInformation & MPI2_DRVMAP0_MAPINFO_MISSING_MASK); if (missing_count || update_phy_bits) { dpm_entry->MappingInformation = et_entry->num_slots; dpm_entry->MappingInformation <<= map_shift; dpm_entry->PhysicalBitsMapping = et_entry->phy_bits; sc->dpm_flush_entry[et_entry-> dpm_entry_num] = 1; } } } } else { /* * This is a new enclosure that is being added. * Initialize the Enclosure Table entry. It will be * finalized when a device is added for the enclosure * and the enclosure has enough space in the Mapping * Table to map its devices. */ if (sc->num_enc_table_entries < sc->max_enclosures) { enc_idx = sc->num_enc_table_entries; sc->num_enc_table_entries++; } else { enc_idx = _mapping_get_high_missing_et_idx(sc); if (enc_idx != MPS_ENCTABLE_BAD_IDX) { et_entry = &sc->enclosure_table[enc_idx]; _mapping_add_to_removal_table(sc, et_entry->dpm_entry_num); _mapping_clear_enc_entry(et_entry); } } if (enc_idx == MPS_ENCTABLE_BAD_IDX) { mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: " "Enclosure cannot be added to mapping " "table because it's full.\n", __func__); goto out; } et_entry = &sc->enclosure_table[enc_idx]; et_entry->enc_handle = le16toh(event_data-> EnclosureHandle); et_entry->enclosure_id = le64toh(event_data-> EnclosureLogicalID.High); et_entry->enclosure_id = ((et_entry->enclosure_id << 32) | le64toh(event_data->EnclosureLogicalID.Low)); et_entry->start_index = MPS_MAPTABLE_BAD_IDX; et_entry->dpm_entry_num = MPS_DPM_BAD_IDX; et_entry->num_slots = le16toh(event_data->NumSlots); et_entry->start_slot = le16toh(event_data->StartSlot); et_entry->phy_bits = le32toh(event_data->PhyBits); } et_entry->init_complete = 1; } else if (event_data->ReasonCode == MPI2_EVENT_SAS_ENCL_RC_NOT_RESPONDING) { /* * An enclosure was removed. Update its missing count and then * update the DPM entry with the new missing count for the * enclosure. */ enc_idx = _mapping_get_enc_idx_from_handle(sc, le16toh(event_data->EnclosureHandle)); if (enc_idx == MPS_ENCTABLE_BAD_IDX) { mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: Cannot " "unmap enclosure with handle 0x%04x because it " "has already been deleted.\n", __func__, le16toh(event_data->EnclosureHandle)); goto out; } et_entry = &sc->enclosure_table[enc_idx]; if (et_entry->missing_count < MPS_MAX_MISSING_COUNT) et_entry->missing_count++; if (sc->is_dpm_enable && et_entry->dpm_entry_num != MPS_DPM_BAD_IDX) { dpm_entry += et_entry->dpm_entry_num; dpm_entry->MappingInformation = et_entry->num_slots; dpm_entry->MappingInformation <<= map_shift; dpm_entry->MappingInformation |= et_entry->missing_count; sc->dpm_flush_entry[et_entry->dpm_entry_num] = 1; } et_entry->init_complete = 1; } out: _mapping_flush_dpm_pages(sc); if (sc->pending_map_events) sc->pending_map_events--; } /** * mps_mapping_topology_change_event - handle topology change events * @sc: per adapter object * @event_data: event data payload * * Returns nothing. */ void mps_mapping_topology_change_event(struct mps_softc *sc, Mpi2EventDataSasTopologyChangeList_t *event_data) { struct _map_topology_change topo_change; struct _map_phy_change *phy_change; Mpi2EventSasTopoPhyEntry_t *event_phy_change; u8 i, num_entries; topo_change.enc_handle = le16toh(event_data->EnclosureHandle); topo_change.exp_handle = le16toh(event_data->ExpanderDevHandle); num_entries = event_data->NumEntries; topo_change.num_entries = num_entries; topo_change.start_phy_num = event_data->StartPhyNum; topo_change.num_phys = event_data->NumPhys; topo_change.exp_status = event_data->ExpStatus; event_phy_change = event_data->PHY; topo_change.phy_details = NULL; if (!num_entries) goto out; phy_change = malloc(sizeof(struct _map_phy_change) * num_entries, M_MPT2, M_NOWAIT|M_ZERO); topo_change.phy_details = phy_change; if (!phy_change) goto out; for (i = 0; i < num_entries; i++, event_phy_change++, phy_change++) { phy_change->dev_handle = le16toh(event_phy_change-> AttachedDevHandle); phy_change->reason = event_phy_change->PhyStatus & MPI2_EVENT_SAS_TOPO_RC_MASK; } _mapping_update_missing_count(sc, &topo_change); _mapping_get_dev_info(sc, &topo_change); _mapping_clear_removed_entries(sc); _mapping_add_new_device(sc, &topo_change); out: free(topo_change.phy_details, M_MPT2); _mapping_flush_dpm_pages(sc); if (sc->pending_map_events) sc->pending_map_events--; } /** * mps_mapping_ir_config_change_event - handle IR config change list events * @sc: per adapter object * @event_data: event data payload * * Returns nothing. */ void mps_mapping_ir_config_change_event(struct mps_softc *sc, Mpi2EventDataIrConfigChangeList_t *event_data) { Mpi2EventIrConfigElement_t *element; int i; u64 *wwid_table; u32 map_idx, flags; struct dev_mapping_table *mt_entry; u16 element_flags; wwid_table = malloc(sizeof(u64) * event_data->NumElements, M_MPT2, M_NOWAIT | M_ZERO); if (!wwid_table) goto out; element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0]; flags = le32toh(event_data->Flags); /* * For volume changes, get the WWID for the volume and put it in a * table to be used in the processing of the IR change event. */ for (i = 0; i < event_data->NumElements; i++, element++) { element_flags = le16toh(element->ElementFlags); if ((element->ReasonCode != MPI2_EVENT_IR_CHANGE_RC_ADDED) && (element->ReasonCode != MPI2_EVENT_IR_CHANGE_RC_REMOVED) && (element->ReasonCode != MPI2_EVENT_IR_CHANGE_RC_NO_CHANGE) && (element->ReasonCode != MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED)) continue; if ((element_flags & MPI2_EVENT_IR_CHANGE_EFLAGS_ELEMENT_TYPE_MASK) == MPI2_EVENT_IR_CHANGE_EFLAGS_VOLUME_ELEMENT) { mps_config_get_volume_wwid(sc, le16toh(element->VolDevHandle), &wwid_table[i]); } } /* * Check the ReasonCode for each element in the IR event and Add/Remove * Volumes or Physical Disks of Volumes to/from the mapping table. Use * the WWIDs gotten above in wwid_table. */ if (flags == MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) goto out; else { element = (Mpi2EventIrConfigElement_t *)&event_data-> ConfigElement[0]; for (i = 0; i < event_data->NumElements; i++, element++) { if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_ADDED || element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED) { map_idx = _mapping_get_ir_mt_idx_from_wwid (sc, wwid_table[i]); if (map_idx != MPS_MAPTABLE_BAD_IDX) { /* * The volume is already in the mapping * table. Just update it's info. */ mt_entry = &sc->mapping_table[map_idx]; mt_entry->id = map_idx; mt_entry->dev_handle = le16toh (element->VolDevHandle); mt_entry->device_info = MPS_DEV_RESERVED | MPS_MAP_IN_USE; _mapping_update_ir_missing_cnt(sc, map_idx, element, wwid_table[i]); continue; } /* * Volume is not in mapping table yet. Find a * free entry in the mapping table at the * volume mapping locations. If no entries are * available, this is an error because it means * there are more volumes than can be mapped * and that should never happen for volumes. */ map_idx = _mapping_get_free_ir_mt_idx(sc); if (map_idx == MPS_MAPTABLE_BAD_IDX) { mps_dprint(sc, MPS_ERROR | MPS_MAPPING, "%s: failed to add the volume with " "handle 0x%04x because there is no " "free space available in the " "mapping table\n", __func__, le16toh(element->VolDevHandle)); continue; } mt_entry = &sc->mapping_table[map_idx]; mt_entry->physical_id = wwid_table[i]; mt_entry->id = map_idx; mt_entry->dev_handle = le16toh(element-> VolDevHandle); mt_entry->device_info = MPS_DEV_RESERVED | MPS_MAP_IN_USE; _mapping_update_ir_missing_cnt(sc, map_idx, element, wwid_table[i]); } else if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_REMOVED) { map_idx = _mapping_get_ir_mt_idx_from_wwid(sc, wwid_table[i]); if (map_idx == MPS_MAPTABLE_BAD_IDX) { mps_dprint(sc, MPS_MAPPING,"%s: Failed " "to remove a volume because it has " "already been removed.\n", __func__); continue; } _mapping_update_ir_missing_cnt(sc, map_idx, element, wwid_table[i]); } else if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED) { map_idx = _mapping_get_mt_idx_from_handle(sc, le16toh(element->VolDevHandle)); if (map_idx == MPS_MAPTABLE_BAD_IDX) { mps_dprint(sc, MPS_MAPPING,"%s: Failed " "to remove volume with handle " "0x%04x because it has already " "been removed.\n", __func__, le16toh(element->VolDevHandle)); continue; } mt_entry = &sc->mapping_table[map_idx]; _mapping_update_ir_missing_cnt(sc, map_idx, element, mt_entry->physical_id); } } } out: _mapping_flush_dpm_pages(sc); free(wwid_table, M_MPT2); if (sc->pending_map_events) sc->pending_map_events--; } int mps_mapping_dump(SYSCTL_HANDLER_ARGS) { struct mps_softc *sc; struct dev_mapping_table *mt_entry; struct sbuf sbuf; int i, error; sc = (struct mps_softc *)arg1; error = sysctl_wire_old_buffer(req, 0); if (error != 0) return (error); sbuf_new_for_sysctl(&sbuf, NULL, 128, req); sbuf_printf(&sbuf, "\nindex physical_id handle id\n"); for (i = 0; i < sc->max_devices; i++) { mt_entry = &sc->mapping_table[i]; if (mt_entry->physical_id == 0) continue; sbuf_printf(&sbuf, "%4d %jx %04x %hd\n", i, mt_entry->physical_id, mt_entry->dev_handle, mt_entry->id); } error = sbuf_finish(&sbuf); sbuf_delete(&sbuf); return (error); } int mps_mapping_encl_dump(SYSCTL_HANDLER_ARGS) { struct mps_softc *sc; struct enc_mapping_table *enc_entry; struct sbuf sbuf; int i, error; sc = (struct mps_softc *)arg1; error = sysctl_wire_old_buffer(req, 0); if (error != 0) return (error); sbuf_new_for_sysctl(&sbuf, NULL, 128, req); sbuf_printf(&sbuf, "\nindex enclosure_id handle map_index\n"); for (i = 0; i < sc->max_enclosures; i++) { enc_entry = &sc->enclosure_table[i]; if (enc_entry->enclosure_id == 0) continue; sbuf_printf(&sbuf, "%4d %jx %04x %d\n", i, enc_entry->enclosure_id, enc_entry->enc_handle, enc_entry->start_index); } error = sbuf_finish(&sbuf); sbuf_delete(&sbuf); return (error); }