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scsi: mpi3mr: Add framework to add phys to STL 

Add framework to register and unregister the host and expander phys with
SCSI Transport Layer (STL).

Link: https://lore.kernel.org/r/20220804131226.16653-6-sreekanth.reddy@broadcom.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Sreekanth Reddy 2022-08-04 18:42:16 +05:30 committed by Martin K. Petersen
parent 7188c03ff8
commit fc7212fd31
3 changed files with 524 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/scsi/mpi3mr/Makefile
View File

@ -3,3 +3,4 @@ obj-m += mpi3mr.o
mpi3mr-y += mpi3mr_os.o \
mpi3mr_fw.o \
mpi3mr_app.o \
mpi3mr_transport.o

93
drivers/scsi/mpi3mr/mpi3mr.h
View File

@ -39,6 +39,7 @@
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <uapi/scsi/scsi_bsg_mpi3mr.h>
#include <scsi/scsi_transport_sas.h>
#include "mpi/mpi30_transport.h"
#include "mpi/mpi30_cnfg.h"
@ -461,6 +462,98 @@ struct mpi3mr_throttle_group_info {
atomic_t pend_large_data_sz;
};
/* HBA port flags */
#define MPI3MR_HBA_PORT_FLAG_DIRTY 0x01
/**
* struct mpi3mr_hba_port - HBA's port information
* @port_id: Port number
* @flags: HBA port flags
*/
struct mpi3mr_hba_port {
struct list_head list;
u8 port_id;
u8 flags;
};
/**
* struct mpi3mr_sas_port - Internal SAS port information
* @port_list: List of ports belonging to a SAS node
* @num_phys: Number of phys associated with port
* @hba_port: HBA port entry
* @remote_identify: Attached device identification
* @rphy: SAS transport layer rphy object
* @port: SAS transport layer port object
* @phy_list: mpi3mr_sas_phy objects belonging to this port
*/
struct mpi3mr_sas_port {
struct list_head port_list;
u8 num_phys;
struct mpi3mr_hba_port *hba_port;
struct sas_identify remote_identify;
struct sas_rphy *rphy;
struct sas_port *port;
struct list_head phy_list;
};
/**
* struct mpi3mr_sas_phy - Internal SAS Phy information
* @port_siblings: List of phys belonging to a port
* @identify: Phy identification
* @remote_identify: Attached device identification
* @phy: SAS transport layer Phy object
* @phy_id: Unique phy id within a port
* @handle: Firmware device handle for this phy
* @attached_handle: Firmware device handle for attached device
* @phy_belongs_to_port: Flag to indicate phy belongs to port
@hba_port: HBA port entry
*/
struct mpi3mr_sas_phy {
struct list_head port_siblings;
struct sas_identify identify;
struct sas_identify remote_identify;
struct sas_phy *phy;
u8 phy_id;
u16 handle;
u16 attached_handle;
u8 phy_belongs_to_port;
struct mpi3mr_hba_port *hba_port;
};
/**
* struct mpi3mr_sas_node - SAS host/expander information
* @list: List of sas nodes in a controller
* @parent_dev: Parent device class
* @num_phys: Number phys belonging to sas_node
* @sas_address: SAS address of sas_node
* @handle: Firmware device handle for this sas_host/expander
* @sas_address_parent: SAS address of parent expander or host
* @enclosure_handle: Firmware handle of enclosure of this node
* @device_info: Capabilities of this sas_host/expander
* @non_responding: used to refresh the expander devices during reset
* @host_node: Flag to indicate this is a host_node
* @hba_port: HBA port entry
* @phy: A list of phys that make up this sas_host/expander
* @sas_port_list: List of internal ports of this node
* @rphy: sas_rphy object of this expander node
*/
struct mpi3mr_sas_node {
struct list_head list;
struct device *parent_dev;
u8 num_phys;
u64 sas_address;
u16 handle;
u64 sas_address_parent;
u16 enclosure_handle;
u64 enclosure_logical_id;
u8 non_responding;
u8 host_node;
struct mpi3mr_hba_port *hba_port;
struct mpi3mr_sas_phy *phy;
struct list_head sas_port_list;
struct sas_rphy *rphy;
};
/**
* struct mpi3mr_enclosure_node - enclosure information
* @list: List of enclosures

430
drivers/scsi/mpi3mr/mpi3mr_transport.c Normal file
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@ -0,0 +1,430 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Driver for Broadcom MPI3 Storage Controllers
*
* Copyright (C) 2017-2022 Broadcom Inc.
* (mailto: mpi3mr-linuxdrv.pdl@broadcom.com)
*
*/
#include "mpi3mr.h"
/**
* mpi3mr_convert_phy_link_rate -
* @link_rate: link rate as defined in the MPI header
*
* Convert link_rate from mpi format into sas_transport layer
* form.
*
* Return: A valid SAS transport layer defined link rate
*/
static enum sas_linkrate mpi3mr_convert_phy_link_rate(u8 link_rate)
{
enum sas_linkrate rc;
switch (link_rate) {
case MPI3_SAS_NEG_LINK_RATE_1_5:
rc = SAS_LINK_RATE_1_5_GBPS;
break;
case MPI3_SAS_NEG_LINK_RATE_3_0:
rc = SAS_LINK_RATE_3_0_GBPS;
break;
case MPI3_SAS_NEG_LINK_RATE_6_0:
rc = SAS_LINK_RATE_6_0_GBPS;
break;
case MPI3_SAS_NEG_LINK_RATE_12_0:
rc = SAS_LINK_RATE_12_0_GBPS;
break;
case MPI3_SAS_NEG_LINK_RATE_22_5:
rc = SAS_LINK_RATE_22_5_GBPS;
break;
case MPI3_SAS_NEG_LINK_RATE_PHY_DISABLED:
rc = SAS_PHY_DISABLED;
break;
case MPI3_SAS_NEG_LINK_RATE_NEGOTIATION_FAILED:
rc = SAS_LINK_RATE_FAILED;
break;
case MPI3_SAS_NEG_LINK_RATE_PORT_SELECTOR:
rc = SAS_SATA_PORT_SELECTOR;
break;
case MPI3_SAS_NEG_LINK_RATE_SMP_RESET_IN_PROGRESS:
rc = SAS_PHY_RESET_IN_PROGRESS;
break;
case MPI3_SAS_NEG_LINK_RATE_SATA_OOB_COMPLETE:
case MPI3_SAS_NEG_LINK_RATE_UNKNOWN_LINK_RATE:
default:
rc = SAS_LINK_RATE_UNKNOWN;
break;
}
return rc;
}
/**
* mpi3mr_delete_sas_phy - Remove a single phy from port
* @mrioc: Adapter instance reference
* @mr_sas_port: Internal Port object
* @mr_sas_phy: Internal Phy object
*
* Return: None.
*/
static void mpi3mr_delete_sas_phy(struct mpi3mr_ioc *mrioc,
struct mpi3mr_sas_port *mr_sas_port,
struct mpi3mr_sas_phy *mr_sas_phy)
{
u64 sas_address = mr_sas_port->remote_identify.sas_address;
dev_info(&mr_sas_phy->phy->dev,
"remove: sas_address(0x%016llx), phy(%d)\n",
(unsigned long long) sas_address, mr_sas_phy->phy_id);
list_del(&mr_sas_phy->port_siblings);
mr_sas_port->num_phys--;
sas_port_delete_phy(mr_sas_port->port, mr_sas_phy->phy);
mr_sas_phy->phy_belongs_to_port = 0;
}
/**
* mpi3mr_add_sas_phy - Adding a single phy to a port
* @mrioc: Adapter instance reference
* @mr_sas_port: Internal Port object
* @mr_sas_phy: Internal Phy object
*
* Return: None.
*/
static void mpi3mr_add_sas_phy(struct mpi3mr_ioc *mrioc,
struct mpi3mr_sas_port *mr_sas_port,
struct mpi3mr_sas_phy *mr_sas_phy)
{
u64 sas_address = mr_sas_port->remote_identify.sas_address;
dev_info(&mr_sas_phy->phy->dev,
"add: sas_address(0x%016llx), phy(%d)\n", (unsigned long long)
sas_address, mr_sas_phy->phy_id);
list_add_tail(&mr_sas_phy->port_siblings, &mr_sas_port->phy_list);
mr_sas_port->num_phys++;
sas_port_add_phy(mr_sas_port->port, mr_sas_phy->phy);
mr_sas_phy->phy_belongs_to_port = 1;
}
/**
* mpi3mr_add_phy_to_an_existing_port - add phy to existing port
* @mrioc: Adapter instance reference
* @mr_sas_node: Internal sas node object (expander or host)
* @mr_sas_phy: Internal Phy object *
* @sas_address: SAS address of device/expander were phy needs
* to be added to
* @hba_port: HBA port entry
*
* Return: None.
*/
static void mpi3mr_add_phy_to_an_existing_port(struct mpi3mr_ioc *mrioc,
struct mpi3mr_sas_node *mr_sas_node, struct mpi3mr_sas_phy *mr_sas_phy,
u64 sas_address, struct mpi3mr_hba_port *hba_port)
{
struct mpi3mr_sas_port *mr_sas_port;
struct mpi3mr_sas_phy *srch_phy;
if (mr_sas_phy->phy_belongs_to_port == 1)
return;
if (!hba_port)
return;
list_for_each_entry(mr_sas_port, &mr_sas_node->sas_port_list,
port_list) {
if (mr_sas_port->remote_identify.sas_address !=
sas_address)
continue;
if (mr_sas_port->hba_port != hba_port)
continue;
list_for_each_entry(srch_phy, &mr_sas_port->phy_list,
port_siblings) {
if (srch_phy == mr_sas_phy)
return;
}
mpi3mr_add_sas_phy(mrioc, mr_sas_port, mr_sas_phy);
return;
}
}
/**
* mpi3mr_del_phy_from_an_existing_port - del phy from a port
* @mrioc: Adapter instance reference
* @mr_sas_node: Internal sas node object (expander or host)
* @mr_sas_phy: Internal Phy object
*
* Return: None.
*/
static void mpi3mr_del_phy_from_an_existing_port(struct mpi3mr_ioc *mrioc,
struct mpi3mr_sas_node *mr_sas_node, struct mpi3mr_sas_phy *mr_sas_phy)
{
struct mpi3mr_sas_port *mr_sas_port, *next;
struct mpi3mr_sas_phy *srch_phy;
if (mr_sas_phy->phy_belongs_to_port == 0)
return;
list_for_each_entry_safe(mr_sas_port, next, &mr_sas_node->sas_port_list,
port_list) {
list_for_each_entry(srch_phy, &mr_sas_port->phy_list,
port_siblings) {
if (srch_phy != mr_sas_phy)
continue;
mpi3mr_delete_sas_phy(mrioc, mr_sas_port,
mr_sas_phy);
return;
}
}
}
/**
* mpi3mr_sas_port_sanity_check - sanity check while adding port
* @mrioc: Adapter instance reference
* @mr_sas_node: Internal sas node object (expander or host)
* @sas_address: SAS address of device/expander
* @hba_port: HBA port entry
*
* Verifies whether the Phys attached to a device with the given
* SAS address already belongs to an existing sas port if so
* will remove those phys from the sas port
*
* Return: None.
*/
static void mpi3mr_sas_port_sanity_check(struct mpi3mr_ioc *mrioc,
struct mpi3mr_sas_node *mr_sas_node, u64 sas_address,
struct mpi3mr_hba_port *hba_port)
{
int i;
for (i = 0; i < mr_sas_node->num_phys; i++) {
if ((mr_sas_node->phy[i].remote_identify.sas_address !=
sas_address) || (mr_sas_node->phy[i].hba_port != hba_port))
continue;
if (mr_sas_node->phy[i].phy_belongs_to_port == 1)
mpi3mr_del_phy_from_an_existing_port(mrioc,
mr_sas_node, &mr_sas_node->phy[i]);
}
}
/**
* mpi3mr_set_identify - set identify for phys and end devices
* @mrioc: Adapter instance reference
* @handle: Firmware device handle
* @identify: SAS transport layer's identify info
*
* Populates sas identify info for a specific device.
*
* Return: 0 for success, non-zero for failure.
*/
static int mpi3mr_set_identify(struct mpi3mr_ioc *mrioc, u16 handle,
struct sas_identify *identify)
{
struct mpi3_device_page0 device_pg0;
struct mpi3_device0_sas_sata_format *sasinf;
u16 device_info;
u16 ioc_status;
if (mrioc->reset_in_progress) {
ioc_err(mrioc, "%s: host reset in progress!\n", __func__);
return -EFAULT;
}
if ((mpi3mr_cfg_get_dev_pg0(mrioc, &ioc_status, &device_pg0,
sizeof(device_pg0), MPI3_DEVICE_PGAD_FORM_HANDLE, handle))) {
ioc_err(mrioc, "%s: device page0 read failed\n", __func__);
return -ENXIO;
}
if (ioc_status != MPI3_IOCSTATUS_SUCCESS) {
ioc_err(mrioc, "device page read failed for handle(0x%04x), with ioc_status(0x%04x) failure at %s:%d/%s()!\n",
handle, ioc_status, __FILE__, __LINE__, __func__);
return -EIO;
}
memset(identify, 0, sizeof(struct sas_identify));
sasinf = &device_pg0.device_specific.sas_sata_format;
device_info = le16_to_cpu(sasinf->device_info);
/* sas_address */
identify->sas_address = le64_to_cpu(sasinf->sas_address);
/* phy number of the parent device this device is linked to */
identify->phy_identifier = sasinf->phy_num;
/* device_type */
switch (device_info & MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_MASK) {
case MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_NO_DEVICE:
identify->device_type = SAS_PHY_UNUSED;
break;
case MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_END_DEVICE:
identify->device_type = SAS_END_DEVICE;
break;
case MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_EXPANDER:
identify->device_type = SAS_EDGE_EXPANDER_DEVICE;
break;
}
/* initiator_port_protocols */
if (device_info & MPI3_SAS_DEVICE_INFO_SSP_INITIATOR)
identify->initiator_port_protocols |= SAS_PROTOCOL_SSP;
/* MPI3.0 doesn't have define for SATA INIT so setting both here*/
if (device_info & MPI3_SAS_DEVICE_INFO_STP_INITIATOR)
identify->initiator_port_protocols |= (SAS_PROTOCOL_STP |
SAS_PROTOCOL_SATA);
if (device_info & MPI3_SAS_DEVICE_INFO_SMP_INITIATOR)
identify->initiator_port_protocols |= SAS_PROTOCOL_SMP;
/* target_port_protocols */
if (device_info & MPI3_SAS_DEVICE_INFO_SSP_TARGET)
identify->target_port_protocols |= SAS_PROTOCOL_SSP;
/* MPI3.0 doesn't have define for STP Target so setting both here*/
if (device_info & MPI3_SAS_DEVICE_INFO_STP_SATA_TARGET)
identify->target_port_protocols |= (SAS_PROTOCOL_STP |
SAS_PROTOCOL_SATA);
if (device_info & MPI3_SAS_DEVICE_INFO_SMP_TARGET)
identify->target_port_protocols |= SAS_PROTOCOL_SMP;
return 0;
}
/**
* mpi3mr_add_host_phy - report sas_host phy to SAS transport
* @mrioc: Adapter instance reference
* @mr_sas_phy: Internal Phy object
* @phy_pg0: SAS phy page 0
* @parent_dev: Prent device class object
*
* Return: 0 for success, non-zero for failure.
*/
static int mpi3mr_add_host_phy(struct mpi3mr_ioc *mrioc,
struct mpi3mr_sas_phy *mr_sas_phy, struct mpi3_sas_phy_page0 phy_pg0,
struct device *parent_dev)
{
struct sas_phy *phy;
int phy_index = mr_sas_phy->phy_id;
INIT_LIST_HEAD(&mr_sas_phy->port_siblings);
phy = sas_phy_alloc(parent_dev, phy_index);
if (!phy) {
ioc_err(mrioc, "failure at %s:%d/%s()!\n",
__FILE__, __LINE__, __func__);
return -1;
}
if ((mpi3mr_set_identify(mrioc, mr_sas_phy->handle,
&mr_sas_phy->identify))) {
ioc_err(mrioc, "failure at %s:%d/%s()!\n",
__FILE__, __LINE__, __func__);
sas_phy_free(phy);
return -1;
}
phy->identify = mr_sas_phy->identify;
mr_sas_phy->attached_handle = le16_to_cpu(phy_pg0.attached_dev_handle);
if (mr_sas_phy->attached_handle)
mpi3mr_set_identify(mrioc, mr_sas_phy->attached_handle,
&mr_sas_phy->remote_identify);
phy->identify.phy_identifier = mr_sas_phy->phy_id;
phy->negotiated_linkrate = mpi3mr_convert_phy_link_rate(
(phy_pg0.negotiated_link_rate &
MPI3_SAS_NEG_LINK_RATE_LOGICAL_MASK) >>
MPI3_SAS_NEG_LINK_RATE_LOGICAL_SHIFT);
phy->minimum_linkrate_hw = mpi3mr_convert_phy_link_rate(
phy_pg0.hw_link_rate & MPI3_SAS_HWRATE_MIN_RATE_MASK);
phy->maximum_linkrate_hw = mpi3mr_convert_phy_link_rate(
phy_pg0.hw_link_rate >> 4);
phy->minimum_linkrate = mpi3mr_convert_phy_link_rate(
phy_pg0.programmed_link_rate & MPI3_SAS_PRATE_MIN_RATE_MASK);
phy->maximum_linkrate = mpi3mr_convert_phy_link_rate(
phy_pg0.programmed_link_rate >> 4);
phy->hostdata = mr_sas_phy->hba_port;
if ((sas_phy_add(phy))) {
ioc_err(mrioc, "failure at %s:%d/%s()!\n",
__FILE__, __LINE__, __func__);
sas_phy_free(phy);
return -1;
}
if ((mrioc->logging_level & MPI3_DEBUG_TRANSPORT_INFO))
dev_info(&phy->dev,
"add: handle(0x%04x), sas_address(0x%016llx)\n"
"\tattached_handle(0x%04x), sas_address(0x%016llx)\n",
mr_sas_phy->handle, (unsigned long long)
mr_sas_phy->identify.sas_address,
mr_sas_phy->attached_handle,
(unsigned long long)
mr_sas_phy->remote_identify.sas_address);
mr_sas_phy->phy = phy;
return 0;
}
/**
* mpi3mr_add_expander_phy - report expander phy to transport
* @mrioc: Adapter instance reference
* @mr_sas_phy: Internal Phy object
* @expander_pg1: SAS Expander page 1
* @parent_dev: Parent device class object
*
* Return: 0 for success, non-zero for failure.
*/
static int mpi3mr_add_expander_phy(struct mpi3mr_ioc *mrioc,
struct mpi3mr_sas_phy *mr_sas_phy,
struct mpi3_sas_expander_page1 expander_pg1,
struct device *parent_dev)
{
struct sas_phy *phy;
int phy_index = mr_sas_phy->phy_id;
INIT_LIST_HEAD(&mr_sas_phy->port_siblings);
phy = sas_phy_alloc(parent_dev, phy_index);
if (!phy) {
ioc_err(mrioc, "failure at %s:%d/%s()!\n",
__FILE__, __LINE__, __func__);
return -1;
}
if ((mpi3mr_set_identify(mrioc, mr_sas_phy->handle,
&mr_sas_phy->identify))) {
ioc_err(mrioc, "failure at %s:%d/%s()!\n",
__FILE__, __LINE__, __func__);
sas_phy_free(phy);
return -1;
}
phy->identify = mr_sas_phy->identify;
mr_sas_phy->attached_handle =
le16_to_cpu(expander_pg1.attached_dev_handle);
if (mr_sas_phy->attached_handle)
mpi3mr_set_identify(mrioc, mr_sas_phy->attached_handle,
&mr_sas_phy->remote_identify);
phy->identify.phy_identifier = mr_sas_phy->phy_id;
phy->negotiated_linkrate = mpi3mr_convert_phy_link_rate(
(expander_pg1.negotiated_link_rate &
MPI3_SAS_NEG_LINK_RATE_LOGICAL_MASK) >>
MPI3_SAS_NEG_LINK_RATE_LOGICAL_SHIFT);
phy->minimum_linkrate_hw = mpi3mr_convert_phy_link_rate(
expander_pg1.hw_link_rate & MPI3_SAS_HWRATE_MIN_RATE_MASK);
phy->maximum_linkrate_hw = mpi3mr_convert_phy_link_rate(
expander_pg1.hw_link_rate >> 4);
phy->minimum_linkrate = mpi3mr_convert_phy_link_rate(
expander_pg1.programmed_link_rate & MPI3_SAS_PRATE_MIN_RATE_MASK);
phy->maximum_linkrate = mpi3mr_convert_phy_link_rate(
expander_pg1.programmed_link_rate >> 4);
phy->hostdata = mr_sas_phy->hba_port;
if ((sas_phy_add(phy))) {
ioc_err(mrioc, "failure at %s:%d/%s()!\n",
__FILE__, __LINE__, __func__);
sas_phy_free(phy);
return -1;
}
if ((mrioc->logging_level & MPI3_DEBUG_TRANSPORT_INFO))
dev_info(&phy->dev,
"add: handle(0x%04x), sas_address(0x%016llx)\n"
"\tattached_handle(0x%04x), sas_address(0x%016llx)\n",
mr_sas_phy->handle, (unsigned long long)
mr_sas_phy->identify.sas_address,
mr_sas_phy->attached_handle,
(unsigned long long)
mr_sas_phy->remote_identify.sas_address);
mr_sas_phy->phy = phy;
return 0;
}