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freebsd-skq/sys/dev/mpr/mpr_mapping.c
Alexander Motin fc9bdb4ee5 Clean enclosure_table when resetting num_enc_table_entries to zero. 
Garbage left there by r325363 in some scenarios found to lead to later
enclosure mapping failures.

MFC after:	1 week
Sponsored by:	iXsystems, Inc.
2018-05-02 02:41:09 +00:00

3134 lines
100 KiB
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/*-
* Copyright (c) 2011-2015 LSI Corp.
* Copyright (c) 2013-2016 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/* TODO Move headers to mprvar */
#include <sys/types.h>
#include <sys/param.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/kthread.h>
#include <sys/taskqueue.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/sysctl.h>
#include <sys/eventhandler.h>
#include <sys/uio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <dev/mpr/mpi/mpi2_type.h>
#include <dev/mpr/mpi/mpi2.h>
#include <dev/mpr/mpi/mpi2_ioc.h>
#include <dev/mpr/mpi/mpi2_sas.h>
#include <dev/mpr/mpi/mpi2_pci.h>
#include <dev/mpr/mpi/mpi2_cnfg.h>
#include <dev/mpr/mpi/mpi2_init.h>
#include <dev/mpr/mpi/mpi2_tool.h>
#include <dev/mpr/mpr_ioctl.h>
#include <dev/mpr/mprvar.h>
#include <dev/mpr/mpr_mapping.h>
/**
* _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 = MPR_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 = MPR_MAPTABLE_BAD_IDX;
enc_entry->phy_bits = 0;
enc_entry->dpm_entry_num = MPR_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 mpr_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;
mpr_dprint(sc, MPR_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 (mpr_config_set_dpm_pg0(sc, &mpi_reply, &config_page,
et_entry->dpm_entry_num)) {
mpr_dprint(sc, MPR_ERROR | MPR_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 mpr_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 == MPR_DPM_BAD_IDX) {
mpr_dprint(sc, MPR_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));
mpr_dprint(sc, MPR_MAPPING, "%s: Writing DPM entry %d for target %d.\n",
__func__, mt_entry->dpm_entry_num, mt_entry->id);
if (mpr_config_set_dpm_pg0(sc, &mpi_reply, &config_page,
mt_entry->dpm_entry_num)) {
mpr_dprint(sc, MPR_ERROR | MPR_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 mpr_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 mpr_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 MPR_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 mpr_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 MPR_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 mpr_softc *sc)
{
struct enc_mapping_table *et_entry;
u8 high_missing_count = 0;
u8 enc_idx, high_idx = MPR_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 mpr_softc *sc)
{
u32 map_idx, high_idx = MPR_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 mpr_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 MPR_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 mpr_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 MPR_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 mpr_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 MPR_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 mpr_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 MPR_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 mpr_softc *sc)
{
u8 high_missing_count = 0;
u32 start_idx, end_idx, map_idx;
u32 high_idx = MPR_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 & MPR_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 == MPR_MAPTABLE_BAD_IDX) {
mpr_dprint(sc, MPR_ERROR | MPR_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 mpr_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 & (MPR_MAP_IN_USE |
MPR_DEV_RESERVED)))
return map_idx;
return MPR_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 mpr_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 MPR_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 mpr_softc *sc)
{
u16 entry_num;
Mpi2DriverMap0Entry_t *dpm_entry;
u16 current_entry = MPR_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 == MPR_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 != MPR_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 != MPR_MAPTABLE_BAD_IDX) {
mt_entry = &sc->mapping_table[map_idx];
mt_entry->dpm_entry_num = MPR_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 mpr_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 < MPR_MAX_MISSING_COUNT)
mt_entry->missing_count++;
mt_entry->device_info &= ~MPR_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 == MPR_DPM_BAD_IDX) {
if (reason == MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED)
{
mpr_dprint(sc, MPR_MAPPING, "%s: Volume being deleted "
"is not in DPM so DPM missing count will not be "
"updated.\n", __func__);
return;
}
}
if (dpm_idx == MPR_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 != MPR_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)) {
mpr_dprint(sc, MPR_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 != MPR_DPM_BAD_IDX) && update_dpm) {
mpr_dprint(sc, MPR_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 == MPR_DPM_BAD_IDX) {
mpr_dprint(sc, MPR_INFO | MPR_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 mpr_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 != MPR_DPM_BAD_IDX)
continue;
mpr_dprint(sc, MPR_MAPPING, "%s: Adding DPM entry %d to table "
"for removal.\n", __func__, dpm_idx);
remove_entry->dpm_entry_num = dpm_idx;
break;
}
}
/**
* _mapping_inc_missing_count
* @sc: per adapter object
* @map_idx: index into the mapping table for the device that is missing
*
* Increment the missing count in the mapping table for a SAS, SATA, or PCIe
* device that is not responding. If Persitent Mapping is used, increment the
* DPM entry as well. Currently, this function is only called if the target
* 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_inc_missing_count(struct mpr_softc *sc, u32 map_idx)
{
u16 ioc_pg8_flags = le16toh(sc->ioc_pg8.Flags);
struct dev_mapping_table *mt_entry;
Mpi2DriverMap0Entry_t *dpm_entry;
if (map_idx == MPR_MAPTABLE_BAD_IDX) {
mpr_dprint(sc, MPR_INFO | MPR_MAPPING, "%s: device is already "
"removed from mapping table\n", __func__);
return;
}
mt_entry = &sc->mapping_table[map_idx];
if (mt_entry->missing_count < MPR_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 != MPR_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_update_missing_count - Update missing count for a device
* @sc: per adapter object
* @topo_change: Topology change event entry
*
* Search through the topology change list and if any device is found not
* responding it's associated map table entry and DPM entry is updated
*
* Returns nothing.
*/
static void
_mapping_update_missing_count(struct mpr_softc *sc,
struct _map_topology_change *topo_change)
{
u8 entry;
struct _map_phy_change *phy_change;
u32 map_idx;
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;
_mapping_inc_missing_count(sc, map_idx);
}
}
/**
* _mapping_update_pcie_missing_count - Update missing count for a PCIe device
* @sc: per adapter object
* @topo_change: Topology change event entry
*
* Search through the PCIe topology change list and if any device is found not
* responding it's associated map table entry and DPM entry is updated
*
* Returns nothing.
*/
static void
_mapping_update_pcie_missing_count(struct mpr_softc *sc,
struct _map_pcie_topology_change *topo_change)
{
u8 entry;
struct _map_port_change *port_change;
u32 map_idx;
for (entry = 0; entry < topo_change->num_entries; entry++) {
port_change = &topo_change->port_details[entry];
if (!port_change->dev_handle || (port_change->reason !=
MPI26_EVENT_PCIE_TOPO_PS_NOT_RESPONDING))
continue;
map_idx = _mapping_get_mt_idx_from_handle(sc, port_change->
dev_handle);
port_change->is_processed = 1;
_mapping_inc_missing_count(sc, map_idx);
}
}
/**
* _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 mpr_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 = MPR_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.
*/
mpr_dprint(sc, MPR_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;
mpr_dprint(sc, MPR_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 & MPR_DEV_RESERVED)) {
num_found += 1;
if (num_found == et_entry->num_slots) {
start_idx = (map_idx - num_found) + 1;
mpr_dprint(sc, MPR_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 == MPR_ENCTABLE_BAD_IDX) {
mpr_dprint(sc, MPR_MAPPING, "%s: Not enough space was "
"found in the mapping for the added enclosure.\n",
__func__);
return MPR_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.
*/
mpr_dprint(sc, MPR_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.
*/
mpr_dprint(sc, MPR_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 &= ~MPR_DEV_RESERVED;
/*
* Now that space has been unreserved, check again to see if
* enough space is available for the new enclosure.
*/
mpr_dprint(sc, MPR_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 & MPR_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.
*/
mpr_dprint(sc, MPR_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) {
mpr_dprint(sc, MPR_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) {
mpr_dprint(sc, MPR_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 |=
MPR_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 mpr_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 (mpr_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 = mprsas_get_sas_address_for_sata_disk(sc,
&sas_address, phy_change->dev_handle, device_info,
&phy_change->is_SATA_SSD);
if (rc) {
mpr_dprint(sc, MPR_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 == MPR_ENCTABLE_BAD_IDX) {
phy_change->is_processed = 1;
mpr_dprint(sc, MPR_ERROR | MPR_MAPPING, "%s: "
"failed to add the device with handle "
"0x%04x because the enclosure is not in "
"the mapping table\n", __func__,
phy_change->dev_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 != MPR_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 ==
MPR_MAPTABLE_BAD_IDX) {
mpr_dprint(sc, MPR_ERROR | MPR_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.
*/
mpr_dprint(sc, MPR_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 = MPR_DEV_RESERVED;
mt_entry->physical_id = et_entry->enclosure_id;
mt_entry->phy_bits = et_entry->phy_bits;
mt_entry->missing_count = 0;
}
}
}
}
/**
* _mapping_get_pcie_dev_info -get information about newly added PCIe devices
* @sc: per adapter object
* @topo_change: Topology change event entry
*
* Searches through the PCIe topology change event list and issues PCIe device
* pg0 requests for the newly added PCIe device. If the device is in an
* enclosure, search for available space in the enclosure mapping table for the
* device and reserve that space.
*
* Returns nothing
*/
static void
_mapping_get_pcie_dev_info(struct mpr_softc *sc,
struct _map_pcie_topology_change *topo_change)
{
u16 ioc_pg8_flags = le16toh(sc->ioc_pg8.Flags);
Mpi2ConfigReply_t mpi_reply;
Mpi26PCIeDevicePage0_t pcie_device_pg0;
u8 entry, enc_idx, port_idx;
u32 map_idx, index;
struct _map_port_change *port_change, *tmp_port_change;
uint64_t pcie_wwid;
struct enc_mapping_table *et_entry;
struct dev_mapping_table *mt_entry;
u8 add_code = MPI26_EVENT_PCIE_TOPO_PS_DEV_ADDED;
for (entry = 0; entry < topo_change->num_entries; entry++) {
port_change = &topo_change->port_details[entry];
if (port_change->is_processed || !port_change->dev_handle ||
port_change->reason != MPI26_EVENT_PCIE_TOPO_PS_DEV_ADDED)
continue;
if (mpr_config_get_pcie_device_pg0(sc, &mpi_reply,
&pcie_device_pg0, MPI26_PCIE_DEVICE_PGAD_FORM_HANDLE,
port_change->dev_handle)) {
port_change->is_processed = 1;
continue;
}
pcie_wwid = pcie_device_pg0.WWID.High;
pcie_wwid = (pcie_wwid << 32) | pcie_device_pg0.WWID.Low;
port_change->physical_id = pcie_wwid;
port_change->slot = le16toh(pcie_device_pg0.Slot);
port_change->device_info = le32toh(pcie_device_pg0.DeviceInfo);
/*
* 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 == MPR_ENCTABLE_BAD_IDX) {
port_change->is_processed = 1;
mpr_dprint(sc, MPR_ERROR | MPR_MAPPING, "%s: "
"failed to add the device with handle "
"0x%04x because the enclosure is not in "
"the mapping table\n", __func__,
port_change->dev_handle);
continue;
}
if (!(port_change->device_info &
MPI26_PCIE_DEVINFO_NVME)) {
port_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 != MPR_MAPTABLE_BAD_IDX)
continue;
/*
* If the Switch 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->switch_dev_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
* port_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 ==
MPR_MAPTABLE_BAD_IDX) {
mpr_dprint(sc, MPR_ERROR | MPR_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);
port_change->is_processed = 1;
for (port_idx = 0; port_idx <
topo_change->num_entries;
port_idx++) {
tmp_port_change =
&topo_change->port_details
[port_idx];
if (tmp_port_change->reason ==
add_code)
tmp_port_change->
is_processed = 1;
}
break;
}
}
/*
* Found space in the mapping table for this enclosure.
* Initialize each mapping table entry for the
* enclosure.
*/
mpr_dprint(sc, MPR_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 = MPR_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 mpr_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 != MPR_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 mpr_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 != MPR_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 = MPR_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 mpr_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 == MPR_ENCTABLE_BAD_IDX) {
phy_change->is_processed = 1;
mpr_dprint(sc, MPR_ERROR | MPR_MAPPING, "%s: "
"failed to add the device with handle "
"0x%04x because the enclosure is not in "
"the mapping table\n", __func__,
phy_change->dev_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 == MPR_MAPTABLE_BAD_IDX) {
phy_change->is_processed = 1;
mpr_dprint(sc, MPR_ERROR | MPR_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 |
(MPR_DEV_RESERVED | MPR_MAP_IN_USE);
if (sc->is_dpm_enable) {
dpm_idx = et_entry->dpm_entry_num;
if (dpm_idx == MPR_DPM_BAD_IDX)
dpm_idx = _mapping_get_dpm_idx_from_id
(sc, et_entry->enclosure_id,
et_entry->phy_bits);
if (dpm_idx == MPR_DPM_BAD_IDX) {
dpm_idx = _mapping_get_free_dpm_idx(sc);
if (dpm_idx != MPR_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;
mpr_dprint(sc, MPR_ERROR |
MPR_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 == MPR_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 == MPR_MAPTABLE_BAD_IDX) {
map_idx = _mapping_get_high_missing_mt_idx(sc);
if (map_idx != MPR_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 != MPR_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
| (MPR_DEV_RESERVED | MPR_MAP_IN_USE);
} else {
phy_change->is_processed = 1;
mpr_dprint(sc, MPR_ERROR | MPR_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 !=
MPR_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 != MPR_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 == MPR_DPM_BAD_IDX) {
phy_change->is_processed = 1;
mpr_dprint(sc, MPR_ERROR | MPR_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_add_new_pcie_device -Add the new PCIe device into mapping table
* @sc: per adapter object
* @topo_change: Topology change event entry
*
* Search through the PCIe 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_pcie_device(struct mpr_softc *sc,
struct _map_pcie_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_port_change *port_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++) {
port_change = &topo_change->port_details[entry];
if (port_change->is_processed)
continue;
if (port_change->reason != MPI26_EVENT_PCIE_TOPO_PS_DEV_ADDED ||
!port_change->dev_handle) {
port_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 == MPR_ENCTABLE_BAD_IDX) {
port_change->is_processed = 1;
mpr_dprint(sc, MPR_ERROR | MPR_MAPPING, "%s: "
"failed to add the device with handle "
"0x%04x because the enclosure is not in "
"the mapping table\n", __func__,
port_change->dev_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 == MPR_MAPTABLE_BAD_IDX) {
port_change->is_processed = 1;
mpr_dprint(sc, MPR_ERROR | MPR_MAPPING, "%s: "
"failed to add the device with handle "
"0x%04x because there is no free space "
"available in the mapping table\n",
__func__, port_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 + port_change->slot -
et_entry->start_slot;
mt_entry = &sc->mapping_table[map_idx];
mt_entry->physical_id = port_change->physical_id;
mt_entry->id = map_idx;
mt_entry->dev_handle = port_change->dev_handle;
mt_entry->missing_count = 0;
mt_entry->dpm_entry_num = et_entry->dpm_entry_num;
mt_entry->device_info = port_change->device_info |
(MPR_DEV_RESERVED | MPR_MAP_IN_USE);
if (sc->is_dpm_enable) {
dpm_idx = et_entry->dpm_entry_num;
if (dpm_idx == MPR_DPM_BAD_IDX)
dpm_idx = _mapping_get_dpm_idx_from_id
(sc, et_entry->enclosure_id,
et_entry->phy_bits);
if (dpm_idx == MPR_DPM_BAD_IDX) {
dpm_idx = _mapping_get_free_dpm_idx(sc);
if (dpm_idx != MPR_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;
port_change->is_processed = 1;
} else {
port_change->is_processed = 1;
mpr_dprint(sc, MPR_ERROR |
MPR_MAPPING, "%s: failed "
"to add the device with "
"handle 0x%04x to "
"persistent table because "
"there is no free space "
"available\n", __func__,
port_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, port_change->physical_id);
if (map_idx == MPR_MAPTABLE_BAD_IDX) {
search_idx = sc->num_rsvd_entries;
if (topo_change->switch_dev_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 == MPR_MAPTABLE_BAD_IDX) {
map_idx = _mapping_get_high_missing_mt_idx(sc);
if (map_idx != MPR_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 != MPR_MAPTABLE_BAD_IDX) {
mt_entry = &sc->mapping_table[map_idx];
mt_entry->physical_id =
port_change->physical_id;
mt_entry->id = map_idx;
mt_entry->dev_handle = port_change->dev_handle;
mt_entry->missing_count = 0;
mt_entry->device_info =
port_change->device_info |
(MPR_DEV_RESERVED | MPR_MAP_IN_USE);
} else {
port_change->is_processed = 1;
mpr_dprint(sc, MPR_ERROR | MPR_MAPPING, "%s: "
"failed to add the device with handle "
"0x%04x because there is no free space "
"available in the mapping table\n",
__func__, port_change->dev_handle);
continue;
}
if (sc->is_dpm_enable) {
if (mt_entry->dpm_entry_num !=
MPR_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 != MPR_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;
port_change->is_processed = 1;
} else if (dpm_idx == MPR_DPM_BAD_IDX) {
port_change->is_processed = 1;
mpr_dprint(sc, MPR_ERROR | MPR_MAPPING,
"%s: failed to add the device with "
"handle 0x%04x to persistent table "
"because there is no free space "
"available\n", __func__,
port_change->dev_handle);
}
}
mt_entry->init_complete = 1;
}
port_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 mpr_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? */
mpr_dprint(sc, MPR_MAPPING, "%s: Flushing DPM entry %d.\n",
__func__, entry_num);
if (mpr_config_set_dpm_pg0(sc, &mpi_reply, &config_page,
entry_num)) {
mpr_dprint(sc, MPR_ERROR | MPR_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
mpr_mapping_allocate_memory(struct mpr_softc *sc)
{
uint32_t dpm_pg0_sz;
sc->mapping_table = malloc((sizeof(struct dev_mapping_table) *
sc->max_devices), M_MPR, M_ZERO|M_NOWAIT);
if (!sc->mapping_table)
goto free_resources;
sc->removal_table = malloc((sizeof(struct map_removal_table) *
sc->max_devices), M_MPR, M_ZERO|M_NOWAIT);
if (!sc->removal_table)
goto free_resources;
sc->enclosure_table = malloc((sizeof(struct enc_mapping_table) *
sc->max_enclosures), M_MPR, M_ZERO|M_NOWAIT);
if (!sc->enclosure_table)
goto free_resources;
sc->dpm_entry_used = malloc((sizeof(u8) * sc->max_dpm_entries),
M_MPR, M_ZERO|M_NOWAIT);
if (!sc->dpm_entry_used)
goto free_resources;
sc->dpm_flush_entry = malloc((sizeof(u8) * sc->max_dpm_entries),
M_MPR, 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_MPR, 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_MPR);
free(sc->removal_table, M_MPR);
free(sc->enclosure_table, M_MPR);
free(sc->dpm_entry_used, M_MPR);
free(sc->dpm_flush_entry, M_MPR);
free(sc->dpm_pg0, M_MPR);
printf("%s: device initialization failed due to failure in mapping "
"table memory allocation\n", __func__);
return -1;
}
/**
* mpr_mapping_free_memory- frees the memory allocated for mapping tables
* @sc: per adapter object
*
* Returns nothing.
*/
void
mpr_mapping_free_memory(struct mpr_softc *sc)
{
free(sc->mapping_table, M_MPR);
free(sc->removal_table, M_MPR);
free(sc->enclosure_table, M_MPR);
free(sc->dpm_entry_used, M_MPR);
free(sc->dpm_flush_entry, M_MPR);
free(sc->dpm_pg0, M_MPR);
}
static bool
_mapping_process_dpm_pg0(struct mpr_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.
*/
mpr_dprint(sc, MPR_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 = MPR_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) {
mpr_dprint(sc, MPR_ERROR | MPR_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 !=
MPR_DPM_BAD_IDX) {
mpr_dprint(sc, MPR_ERROR | MPR_MAPPING,
"%s: Conflict in mapping table for "
" enclosure %d\n", __func__,
enc_idx);
goto fail;
}
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 = MPR_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 != MPR_DPM_BAD_IDX) {
mpr_dprint(sc, MPR_ERROR | MPR_MAPPING, "%s: "
"Conflict in mapping table for device %d\n",
__func__, map_idx);
goto fail;
}
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 = MPR_DEV_RESERVED;
}
} /*close the loop for DPM table */
return (true);
fail:
for (entry_num = 0; entry_num < sc->max_dpm_entries; entry_num++) {
sc->dpm_entry_used[entry_num] = 0;
/*
* for IR firmware, it may be necessary to wipe out
* sc->mapping_table volumes tooi
*/
}
for (enc_idx = 0; enc_idx < sc->num_enc_table_entries; enc_idx++)
_mapping_clear_enc_entry(sc->enclosure_table + enc_idx);
sc->num_enc_table_entries = 0;
return (false);
}
/*
* mpr_mapping_check_devices - start of the day check for device availabilty
* @sc: per adapter object
*
* Returns nothing.
*/
void
mpr_mapping_check_devices(void *data)
{
u32 i;
struct dev_mapping_table *mt_entry;
struct mpr_softc *sc = (struct mpr_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;
MPR_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.
*/
mpr_dprint(sc, MPR_MAPPING, "%s: Start check for missing devices.\n",
__func__);
mtx_assert(&sc->mpr_mtx, MA_OWNED);
if ((callout_pending(&sc->device_check_callout)) ||
(!callout_active(&sc->device_check_callout))) {
mpr_dprint(sc, MPR_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) {
mpr_dprint(sc, MPR_MAPPING, "%s: No devices have been mapped. "
"Reset callout to check again after a %d second delay.\n",
__func__, MPR_MISSING_CHECK_DELAY);
callout_reset(&sc->device_check_callout,
MPR_MISSING_CHECK_DELAY * hz, mpr_mapping_check_devices,
sc);
return;
}
mpr_dprint(sc, MPR_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 <
MPR_MAX_MISSING_COUNT) {
mpr_dprint(sc, MPR_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 !=
MPR_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 & MPR_DEV_RESERVED
&& !mt_entry->physical_id)
mt_entry->init_complete = 1;
else if (mt_entry->device_info & MPR_DEV_RESERVED) {
if (!mt_entry->init_complete) {
mpr_dprint(sc, MPR_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 <
MPR_MAX_MISSING_COUNT) {
mt_entry->missing_count++;
if (mt_entry->dpm_entry_num !=
MPR_DPM_BAD_IDX) {
_mapping_commit_map_entry(sc,
mt_entry);
}
}
mt_entry->init_complete = 1;
}
}
}
}
/**
* mpr_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
mpr_mapping_initialize(struct mpr_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;
mpr_dprint(sc, MPR_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 = mpr_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 = MPR_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 (mpr_config_get_dpm_pg0(sc, &mpi_reply, sc->dpm_pg0,
dpm_pg0_sz)) {
mpr_dprint(sc, MPR_ERROR | MPR_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) {
if (!_mapping_process_dpm_pg0(sc))
sc->is_dpm_enable = 0;
}
if (! sc->is_dpm_enable) {
mpr_dprint(sc, MPR_MAPPING, "%s: DPM processing is disabled. "
"Device mappings will not persist across reboots or "
"resets.\n", __func__);
}
sc->track_mapping_events = 1;
return 0;
}
/**
* mpr_mapping_exit - clear mapping table and associated memory
* @sc: per adapter object
*
* Returns nothing.
*/
void
mpr_mapping_exit(struct mpr_softc *sc)
{
_mapping_flush_dpm_pages(sc);
mpr_mapping_free_memory(sc);
}
/**
* mpr_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
mpr_mapping_get_tid(struct mpr_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 MPR_MAP_BAD_ID;
}
/**
* mpr_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
mpr_mapping_get_tid_from_handle(struct mpr_softc *sc, u16 handle)
{
return (_mapping_get_mt_idx_from_handle(sc, handle));
}
/**
* mpr_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
mpr_mapping_get_raid_tid(struct mpr_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 MPR_MAP_BAD_ID;
}
/**
* mpr_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
mpr_mapping_get_raid_tid_from_handle(struct mpr_softc *sc, u16 volHandle)
{
return (_mapping_get_ir_mt_idx_from_handle(sc, volHandle));
}
/**
* mpr_mapping_enclosure_dev_status_change_event - handle enclosure events
* @sc: per adapter object
* @event_data: event data payload
*
* Return nothing.
*/
void
mpr_mapping_enclosure_dev_status_change_event(struct mpr_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) {
mpr_dprint(sc, MPR_ERROR | MPR_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 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 != MPR_ENCTABLE_BAD_IDX) {
et_entry = &sc->enclosure_table[enc_idx];
if (et_entry->init_complete &&
!et_entry->missing_count) {
mpr_dprint(sc, MPR_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 !=
MPR_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.
*/
enc_idx = sc->num_enc_table_entries;
if (enc_idx >= sc->max_enclosures) {
mpr_dprint(sc, MPR_ERROR | MPR_MAPPING, "%s: "
"Enclosure cannot be added to mapping "
"table because it's full.\n", __func__);
goto out;
}
sc->num_enc_table_entries++;
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 = MPR_MAPTABLE_BAD_IDX;
et_entry->dpm_entry_num = MPR_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 == MPR_ENCTABLE_BAD_IDX) {
mpr_dprint(sc, MPR_ERROR | MPR_MAPPING, "%s: Cannot "
"unmap enclosure %d because it has already been "
"deleted.\n", __func__, enc_idx);
goto out;
}
et_entry = &sc->enclosure_table[enc_idx];
if (et_entry->missing_count < MPR_MAX_MISSING_COUNT)
et_entry->missing_count++;
if (sc->is_dpm_enable &&
et_entry->dpm_entry_num != MPR_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--;
}
/**
* mpr_mapping_topology_change_event - handle topology change events
* @sc: per adapter object
* @event_data: event data payload
*
* Returns nothing.
*/
void
mpr_mapping_topology_change_event(struct mpr_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_MPR, 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_MPR);
_mapping_flush_dpm_pages(sc);
if (sc->pending_map_events)
sc->pending_map_events--;
}
/**
* mpr_mapping_pcie_topology_change_event - handle PCIe topology change events
* @sc: per adapter object
* @event_data: event data payload
*
* Returns nothing.
*/
void
mpr_mapping_pcie_topology_change_event(struct mpr_softc *sc,
Mpi26EventDataPCIeTopologyChangeList_t *event_data)
{
struct _map_pcie_topology_change topo_change;
struct _map_port_change *port_change;
Mpi26EventPCIeTopoPortEntry_t *event_port_change;
u8 i, num_entries;
topo_change.switch_dev_handle = le16toh(event_data->SwitchDevHandle);
topo_change.enc_handle = le16toh(event_data->EnclosureHandle);
num_entries = event_data->NumEntries;
topo_change.num_entries = num_entries;
topo_change.start_port_num = event_data->StartPortNum;
topo_change.num_ports = event_data->NumPorts;
topo_change.switch_status = event_data->SwitchStatus;
event_port_change = event_data->PortEntry;
topo_change.port_details = NULL;
if (!num_entries)
goto out;
port_change = malloc(sizeof(struct _map_port_change) * num_entries,
M_MPR, M_NOWAIT|M_ZERO);
topo_change.port_details = port_change;
if (!port_change)
goto out;
for (i = 0; i < num_entries; i++, event_port_change++, port_change++) {
port_change->dev_handle = le16toh(event_port_change->
AttachedDevHandle);
port_change->reason = event_port_change->PortStatus;
}
_mapping_update_pcie_missing_count(sc, &topo_change);
_mapping_get_pcie_dev_info(sc, &topo_change);
_mapping_clear_removed_entries(sc);
_mapping_add_new_pcie_device(sc, &topo_change);
out:
free(topo_change.port_details, M_MPR);
_mapping_flush_dpm_pages(sc);
if (sc->pending_map_events)
sc->pending_map_events--;
}
/**
* mpr_mapping_ir_config_change_event - handle IR config change list events
* @sc: per adapter object
* @event_data: event data payload
*
* Returns nothing.
*/
void
mpr_mapping_ir_config_change_event(struct mpr_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_MPR,
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) {
mpr_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 != MPR_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 =
MPR_DEV_RESERVED | MPR_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 == MPR_MAPTABLE_BAD_IDX)
{
mpr_dprint(sc, MPR_ERROR | MPR_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 = MPR_DEV_RESERVED |
MPR_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 == MPR_MAPTABLE_BAD_IDX) {
mpr_dprint(sc, MPR_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 == MPR_MAPTABLE_BAD_IDX) {
mpr_dprint(sc, MPR_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_MPR);
if (sc->pending_map_events)
sc->pending_map_events--;
}
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