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kernel_optimize_test/drivers/scsi/mpt2sas/mpt2sas_transport.c
Kashyap, Desai 38c2911449 [SCSI] mpt2sas: sanity added to remove duplicate port from topology 
There are few special cases which needs to be handled deleting old port.

CASE1: In topology you need cascaded expanders. Through sysfs just make sure
topology is up. Erase the manufacturing image of the cascaded expander and
reset the board. In some cases Adapter will receive Exapnder Add event
before expander delete. In such a case, driver needs to delete duplicate
port before adding new port.

CASE2: Enable Device Missing delay of HBA through lsiutils. If expander or
end device is hotswapped with different device before DMD timer expires,
driver will get device add for new device first and then device deletion
event for the original devices will arrive later at DMD timer expires. In
this case also driver need to delete duplicate port before adding port for
new device.

Added new function which will make sure when new port is
added, that its not claiming the same phy resources already in use by
another port. If it does, then it will delete the other port before adding
the new port.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-04-11 13:41:50 -05:00

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/*
* SAS Transport Layer for MPT (Message Passing Technology) based controllers
*
* This code is based on drivers/scsi/mpt2sas/mpt2_transport.c
* Copyright (C) 2007-2010 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* NO WARRANTY
* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
* solely responsible for determining the appropriateness of using and
* distributing the Program and assumes all risks associated with its
* exercise of rights under this Agreement, including but not limited to
* the risks and costs of program errors, damage to or loss of data,
* programs or equipment, and unavailability or interruption of operations.
* DISCLAIMER OF LIABILITY
* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), 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 OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_sas.h>
#include <scsi/scsi_dbg.h>
#include "mpt2sas_base.h"
/**
* _transport_sas_node_find_by_sas_address - sas node search
* @ioc: per adapter object
* @sas_address: sas address of expander or sas host
* Context: Calling function should acquire ioc->sas_node_lock.
*
* Search for either hba phys or expander device based on handle, then returns
* the sas_node object.
*/
static struct _sas_node *
_transport_sas_node_find_by_sas_address(struct MPT2SAS_ADAPTER *ioc,
u64 sas_address)
{
if (ioc->sas_hba.sas_address == sas_address)
return &ioc->sas_hba;
else
return mpt2sas_scsih_expander_find_by_sas_address(ioc,
sas_address);
}
/**
* _transport_convert_phy_link_rate -
* @link_rate: link rate returned from mpt firmware
*
* Convert link_rate from mpi fusion into sas_transport form.
*/
static enum sas_linkrate
_transport_convert_phy_link_rate(u8 link_rate)
{
enum sas_linkrate rc;
switch (link_rate) {
case MPI2_SAS_NEG_LINK_RATE_1_5:
rc = SAS_LINK_RATE_1_5_GBPS;
break;
case MPI2_SAS_NEG_LINK_RATE_3_0:
rc = SAS_LINK_RATE_3_0_GBPS;
break;
case MPI2_SAS_NEG_LINK_RATE_6_0:
rc = SAS_LINK_RATE_6_0_GBPS;
break;
case MPI2_SAS_NEG_LINK_RATE_PHY_DISABLED:
rc = SAS_PHY_DISABLED;
break;
case MPI2_SAS_NEG_LINK_RATE_NEGOTIATION_FAILED:
rc = SAS_LINK_RATE_FAILED;
break;
case MPI2_SAS_NEG_LINK_RATE_PORT_SELECTOR:
rc = SAS_SATA_PORT_SELECTOR;
break;
case MPI2_SAS_NEG_LINK_RATE_SMP_RESET_IN_PROGRESS:
rc = SAS_PHY_RESET_IN_PROGRESS;
break;
default:
case MPI2_SAS_NEG_LINK_RATE_SATA_OOB_COMPLETE:
case MPI2_SAS_NEG_LINK_RATE_UNKNOWN_LINK_RATE:
rc = SAS_LINK_RATE_UNKNOWN;
break;
}
return rc;
}
/**
* _transport_set_identify - set identify for phys and end devices
* @ioc: per adapter object
* @handle: device handle
* @identify: sas identify info
*
* Populates sas identify info.
*
* Returns 0 for success, non-zero for failure.
*/
static int
_transport_set_identify(struct MPT2SAS_ADAPTER *ioc, u16 handle,
struct sas_identify *identify)
{
Mpi2SasDevicePage0_t sas_device_pg0;
Mpi2ConfigReply_t mpi_reply;
u32 device_info;
u32 ioc_status;
if (ioc->shost_recovery) {
printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
__func__, ioc->name);
return -EFAULT;
}
if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -ENXIO;
}
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_ERR_FMT "handle(0x%04x), ioc_status(0x%04x)"
"\nfailure at %s:%d/%s()!\n", ioc->name, handle, ioc_status,
__FILE__, __LINE__, __func__);
return -EIO;
}
memset(identify, 0, sizeof(identify));
device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
/* sas_address */
identify->sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
/* device_type */
switch (device_info & MPI2_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) {
case MPI2_SAS_DEVICE_INFO_NO_DEVICE:
identify->device_type = SAS_PHY_UNUSED;
break;
case MPI2_SAS_DEVICE_INFO_END_DEVICE:
identify->device_type = SAS_END_DEVICE;
break;
case MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER:
identify->device_type = SAS_EDGE_EXPANDER_DEVICE;
break;
case MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER:
identify->device_type = SAS_FANOUT_EXPANDER_DEVICE;
break;
}
/* initiator_port_protocols */
if (device_info & MPI2_SAS_DEVICE_INFO_SSP_INITIATOR)
identify->initiator_port_protocols |= SAS_PROTOCOL_SSP;
if (device_info & MPI2_SAS_DEVICE_INFO_STP_INITIATOR)
identify->initiator_port_protocols |= SAS_PROTOCOL_STP;
if (device_info & MPI2_SAS_DEVICE_INFO_SMP_INITIATOR)
identify->initiator_port_protocols |= SAS_PROTOCOL_SMP;
if (device_info & MPI2_SAS_DEVICE_INFO_SATA_HOST)
identify->initiator_port_protocols |= SAS_PROTOCOL_SATA;
/* target_port_protocols */
if (device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET)
identify->target_port_protocols |= SAS_PROTOCOL_SSP;
if (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
identify->target_port_protocols |= SAS_PROTOCOL_STP;
if (device_info & MPI2_SAS_DEVICE_INFO_SMP_TARGET)
identify->target_port_protocols |= SAS_PROTOCOL_SMP;
if (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
identify->target_port_protocols |= SAS_PROTOCOL_SATA;
return 0;
}
/**
* mpt2sas_transport_done - internal transport layer callback handler.
* @ioc: per adapter object
* @smid: system request message index
* @msix_index: MSIX table index supplied by the OS
* @reply: reply message frame(lower 32bit addr)
*
* Callback handler when sending internal generated transport cmds.
* The callback index passed is `ioc->transport_cb_idx`
*
* Return 1 meaning mf should be freed from _base_interrupt
* 0 means the mf is freed from this function.
*/
u8
mpt2sas_transport_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
u32 reply)
{
MPI2DefaultReply_t *mpi_reply;
mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
if (ioc->transport_cmds.status == MPT2_CMD_NOT_USED)
return 1;
if (ioc->transport_cmds.smid != smid)
return 1;
ioc->transport_cmds.status |= MPT2_CMD_COMPLETE;
if (mpi_reply) {
memcpy(ioc->transport_cmds.reply, mpi_reply,
mpi_reply->MsgLength*4);
ioc->transport_cmds.status |= MPT2_CMD_REPLY_VALID;
}
ioc->transport_cmds.status &= ~MPT2_CMD_PENDING;
complete(&ioc->transport_cmds.done);
return 1;
}
/* report manufacture request structure */
struct rep_manu_request{
u8 smp_frame_type;
u8 function;
u8 reserved;
u8 request_length;
};
/* report manufacture reply structure */
struct rep_manu_reply{
u8 smp_frame_type; /* 0x41 */
u8 function; /* 0x01 */
u8 function_result;
u8 response_length;
u16 expander_change_count;
u8 reserved0[2];
u8 sas_format;
u8 reserved2[3];
u8 vendor_id[SAS_EXPANDER_VENDOR_ID_LEN];
u8 product_id[SAS_EXPANDER_PRODUCT_ID_LEN];
u8 product_rev[SAS_EXPANDER_PRODUCT_REV_LEN];
u8 component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN];
u16 component_id;
u8 component_revision_id;
u8 reserved3;
u8 vendor_specific[8];
};
/**
* _transport_expander_report_manufacture - obtain SMP report_manufacture
* @ioc: per adapter object
* @sas_address: expander sas address
* @edev: the sas_expander_device object
*
* Fills in the sas_expander_device object when SMP port is created.
*
* Returns 0 for success, non-zero for failure.
*/
static int
_transport_expander_report_manufacture(struct MPT2SAS_ADAPTER *ioc,
u64 sas_address, struct sas_expander_device *edev)
{
Mpi2SmpPassthroughRequest_t *mpi_request;
Mpi2SmpPassthroughReply_t *mpi_reply;
struct rep_manu_reply *manufacture_reply;
struct rep_manu_request *manufacture_request;
int rc;
u16 smid;
u32 ioc_state;
unsigned long timeleft;
void *psge;
u32 sgl_flags;
u8 issue_reset = 0;
void *data_out = NULL;
dma_addr_t data_out_dma;
u32 sz;
u64 *sas_address_le;
u16 wait_state_count;
if (ioc->shost_recovery) {
printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
__func__, ioc->name);
return -EFAULT;
}
mutex_lock(&ioc->transport_cmds.mutex);
if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n",
ioc->name, __func__);
rc = -EAGAIN;
goto out;
}
ioc->transport_cmds.status = MPT2_CMD_PENDING;
wait_state_count = 0;
ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
if (wait_state_count++ == 10) {
printk(MPT2SAS_ERR_FMT
"%s: failed due to ioc not operational\n",
ioc->name, __func__);
rc = -EFAULT;
goto out;
}
ssleep(1);
ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
printk(MPT2SAS_INFO_FMT "%s: waiting for "
"operational state(count=%d)\n", ioc->name,
__func__, wait_state_count);
}
if (wait_state_count)
printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
ioc->name, __func__);
smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
if (!smid) {
printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
rc = -EAGAIN;
goto out;
}
rc = 0;
mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
ioc->transport_cmds.smid = smid;
sz = sizeof(struct rep_manu_request) + sizeof(struct rep_manu_reply);
data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
if (!data_out) {
printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
__LINE__, __func__);
rc = -ENOMEM;
mpt2sas_base_free_smid(ioc, smid);
goto out;
}
manufacture_request = data_out;
manufacture_request->smp_frame_type = 0x40;
manufacture_request->function = 1;
manufacture_request->reserved = 0;
manufacture_request->request_length = 0;
memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
mpi_request->PhysicalPort = 0xFF;
mpi_request->VF_ID = 0; /* TODO */
mpi_request->VP_ID = 0;
sas_address_le = (u64 *)&mpi_request->SASAddress;
*sas_address_le = cpu_to_le64(sas_address);
mpi_request->RequestDataLength =
cpu_to_le16(sizeof(struct rep_manu_request));
psge = &mpi_request->SGL;
/* WRITE sgel first */
sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
ioc->base_add_sg_single(psge, sgl_flags |
sizeof(struct rep_manu_request), data_out_dma);
/* incr sgel */
psge += ioc->sge_size;
/* READ sgel last */
sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
MPI2_SGE_FLAGS_END_OF_LIST);
sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
ioc->base_add_sg_single(psge, sgl_flags |
sizeof(struct rep_manu_reply), data_out_dma +
sizeof(struct rep_manu_request));
dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "report_manufacture - "
"send to sas_addr(0x%016llx)\n", ioc->name,
(unsigned long long)sas_address));
mpt2sas_base_put_smid_default(ioc, smid);
init_completion(&ioc->transport_cmds.done);
timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
10*HZ);
if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
printk(MPT2SAS_ERR_FMT "%s: timeout\n",
ioc->name, __func__);
_debug_dump_mf(mpi_request,
sizeof(Mpi2SmpPassthroughRequest_t)/4);
if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
issue_reset = 1;
goto issue_host_reset;
}
dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "report_manufacture - "
"complete\n", ioc->name));
if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
u8 *tmp;
mpi_reply = ioc->transport_cmds.reply;
dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
"report_manufacture - reply data transfer size(%d)\n",
ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
sizeof(struct rep_manu_reply))
goto out;
manufacture_reply = data_out + sizeof(struct rep_manu_request);
strncpy(edev->vendor_id, manufacture_reply->vendor_id,
SAS_EXPANDER_VENDOR_ID_LEN);
strncpy(edev->product_id, manufacture_reply->product_id,
SAS_EXPANDER_PRODUCT_ID_LEN);
strncpy(edev->product_rev, manufacture_reply->product_rev,
SAS_EXPANDER_PRODUCT_REV_LEN);
edev->level = manufacture_reply->sas_format & 1;
if (edev->level) {
strncpy(edev->component_vendor_id,
manufacture_reply->component_vendor_id,
SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN);
tmp = (u8 *)&manufacture_reply->component_id;
edev->component_id = tmp[0] << 8 | tmp[1];
edev->component_revision_id =
manufacture_reply->component_revision_id;
}
} else
dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
"report_manufacture - no reply\n", ioc->name));
issue_host_reset:
if (issue_reset)
mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
FORCE_BIG_HAMMER);
out:
ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
if (data_out)
pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
mutex_unlock(&ioc->transport_cmds.mutex);
return rc;
}
/**
* _transport_delete_duplicate_port - (see below description)
* @ioc: per adapter object
* @sas_node: sas node object (either expander or sas host)
* @sas_address: sas address of device being added
* @phy_num: phy number
*
* This function is called when attempting to add a new port that is claiming
* the same phy resources already in use by another port. If we don't release
* the claimed phy resources, the sas transport layer will hang from the BUG
* in sas_port_add_phy.
*
* The reason we would hit this issue is becuase someone is changing the
* sas address of a device on the fly, meanwhile controller firmware sends
* EVENTs out of order when removing the previous instance of the device.
*/
static void
_transport_delete_duplicate_port(struct MPT2SAS_ADAPTER *ioc,
struct _sas_node *sas_node, u64 sas_address, int phy_num)
{
struct _sas_port *mpt2sas_port, *mpt2sas_port_duplicate;
struct _sas_phy *mpt2sas_phy;
printk(MPT2SAS_ERR_FMT "new device located at sas_addr(0x%016llx), "
"phy_id(%d)\n", ioc->name, (unsigned long long)sas_address,
phy_num);
mpt2sas_port_duplicate = NULL;
list_for_each_entry(mpt2sas_port, &sas_node->sas_port_list, port_list) {
dev_printk(KERN_ERR, &mpt2sas_port->port->dev,
"existing device at sas_addr(0x%016llx), num_phys(%d)\n",
(unsigned long long)
mpt2sas_port->remote_identify.sas_address,
mpt2sas_port->num_phys);
list_for_each_entry(mpt2sas_phy, &mpt2sas_port->phy_list,
port_siblings) {
dev_printk(KERN_ERR, &mpt2sas_phy->phy->dev,
"phy_number(%d)\n", mpt2sas_phy->phy_id);
if (mpt2sas_phy->phy_id == phy_num)
mpt2sas_port_duplicate = mpt2sas_port;
}
}
if (!mpt2sas_port_duplicate)
return;
dev_printk(KERN_ERR, &mpt2sas_port_duplicate->port->dev,
"deleting duplicate device at sas_addr(0x%016llx), phy(%d)!!!!\n",
(unsigned long long)
mpt2sas_port_duplicate->remote_identify.sas_address, phy_num);
ioc->logging_level |= MPT_DEBUG_TRANSPORT;
mpt2sas_transport_port_remove(ioc,
mpt2sas_port_duplicate->remote_identify.sas_address,
sas_node->sas_address);
ioc->logging_level &= ~MPT_DEBUG_TRANSPORT;
}
/**
* _transport_sanity_check - sanity check when adding a new port
* @ioc: per adapter object
* @sas_node: sas node object (either expander or sas host)
* @sas_address: sas address of device being added
*
* See the explanation above from _transport_delete_duplicate_port
*/
static void
_transport_sanity_check(struct MPT2SAS_ADAPTER *ioc, struct _sas_node *sas_node,
u64 sas_address)
{
int i;
for (i = 0; i < sas_node->num_phys; i++)
if (sas_node->phy[i].remote_identify.sas_address == sas_address)
if (sas_node->phy[i].phy_belongs_to_port)
_transport_delete_duplicate_port(ioc, sas_node,
sas_address, i);
}
/**
* mpt2sas_transport_port_add - insert port to the list
* @ioc: per adapter object
* @handle: handle of attached device
* @sas_address: sas address of parent expander or sas host
* Context: This function will acquire ioc->sas_node_lock.
*
* Adding new port object to the sas_node->sas_port_list.
*
* Returns mpt2sas_port.
*/
struct _sas_port *
mpt2sas_transport_port_add(struct MPT2SAS_ADAPTER *ioc, u16 handle,
u64 sas_address)
{
struct _sas_phy *mpt2sas_phy, *next;
struct _sas_port *mpt2sas_port;
unsigned long flags;
struct _sas_node *sas_node;
struct sas_rphy *rphy;
int i;
struct sas_port *port;
mpt2sas_port = kzalloc(sizeof(struct _sas_port),
GFP_KERNEL);
if (!mpt2sas_port) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return NULL;
}
INIT_LIST_HEAD(&mpt2sas_port->port_list);
INIT_LIST_HEAD(&mpt2sas_port->phy_list);
spin_lock_irqsave(&ioc->sas_node_lock, flags);
sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
if (!sas_node) {
printk(MPT2SAS_ERR_FMT "%s: Could not find "
"parent sas_address(0x%016llx)!\n", ioc->name,
__func__, (unsigned long long)sas_address);
goto out_fail;
}
if ((_transport_set_identify(ioc, handle,
&mpt2sas_port->remote_identify))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out_fail;
}
if (mpt2sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out_fail;
}
_transport_sanity_check(ioc, sas_node,
mpt2sas_port->remote_identify.sas_address);
for (i = 0; i < sas_node->num_phys; i++) {
if (sas_node->phy[i].remote_identify.sas_address !=
mpt2sas_port->remote_identify.sas_address)
continue;
list_add_tail(&sas_node->phy[i].port_siblings,
&mpt2sas_port->phy_list);
mpt2sas_port->num_phys++;
}
if (!mpt2sas_port->num_phys) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out_fail;
}
port = sas_port_alloc_num(sas_node->parent_dev);
if ((sas_port_add(port))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out_fail;
}
list_for_each_entry(mpt2sas_phy, &mpt2sas_port->phy_list,
port_siblings) {
if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
dev_printk(KERN_INFO, &port->dev, "add: handle(0x%04x)"
", sas_addr(0x%016llx), phy(%d)\n", handle,
(unsigned long long)
mpt2sas_port->remote_identify.sas_address,
mpt2sas_phy->phy_id);
sas_port_add_phy(port, mpt2sas_phy->phy);
mpt2sas_phy->phy_belongs_to_port = 1;
}
mpt2sas_port->port = port;
if (mpt2sas_port->remote_identify.device_type == SAS_END_DEVICE)
rphy = sas_end_device_alloc(port);
else
rphy = sas_expander_alloc(port,
mpt2sas_port->remote_identify.device_type);
rphy->identify = mpt2sas_port->remote_identify;
if ((sas_rphy_add(rphy))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
}
if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
dev_printk(KERN_INFO, &rphy->dev, "add: handle(0x%04x), "
"sas_addr(0x%016llx)\n", handle,
(unsigned long long)
mpt2sas_port->remote_identify.sas_address);
mpt2sas_port->rphy = rphy;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
list_add_tail(&mpt2sas_port->port_list, &sas_node->sas_port_list);
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
/* fill in report manufacture */
if (mpt2sas_port->remote_identify.device_type ==
MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
mpt2sas_port->remote_identify.device_type ==
MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
_transport_expander_report_manufacture(ioc,
mpt2sas_port->remote_identify.sas_address,
rphy_to_expander_device(rphy));
return mpt2sas_port;
out_fail:
list_for_each_entry_safe(mpt2sas_phy, next, &mpt2sas_port->phy_list,
port_siblings)
list_del(&mpt2sas_phy->port_siblings);
kfree(mpt2sas_port);
return NULL;
}
/**
* mpt2sas_transport_port_remove - remove port from the list
* @ioc: per adapter object
* @sas_address: sas address of attached device
* @sas_address_parent: sas address of parent expander or sas host
* Context: This function will acquire ioc->sas_node_lock.
*
* Removing object and freeing associated memory from the
* ioc->sas_port_list.
*
* Return nothing.
*/
void
mpt2sas_transport_port_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
u64 sas_address_parent)
{
int i;
unsigned long flags;
struct _sas_port *mpt2sas_port, *next;
struct _sas_node *sas_node;
u8 found = 0;
struct _sas_phy *mpt2sas_phy, *next_phy;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
sas_node = _transport_sas_node_find_by_sas_address(ioc,
sas_address_parent);
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
if (!sas_node)
return;
list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
port_list) {
if (mpt2sas_port->remote_identify.sas_address != sas_address)
continue;
found = 1;
list_del(&mpt2sas_port->port_list);
goto out;
}
out:
if (!found)
return;
for (i = 0; i < sas_node->num_phys; i++) {
if (sas_node->phy[i].remote_identify.sas_address == sas_address)
memset(&sas_node->phy[i].remote_identify, 0 ,
sizeof(struct sas_identify));
}
list_for_each_entry_safe(mpt2sas_phy, next_phy,
&mpt2sas_port->phy_list, port_siblings) {
if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
"remove: sas_addr(0x%016llx), phy(%d)\n",
(unsigned long long)
mpt2sas_port->remote_identify.sas_address,
mpt2sas_phy->phy_id);
mpt2sas_phy->phy_belongs_to_port = 0;
sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
list_del(&mpt2sas_phy->port_siblings);
}
sas_port_delete(mpt2sas_port->port);
kfree(mpt2sas_port);
}
/**
* mpt2sas_transport_add_host_phy - report sas_host phy to transport
* @ioc: per adapter object
* @mpt2sas_phy: mpt2sas per phy object
* @phy_pg0: sas phy page 0
* @parent_dev: parent device class object
*
* Returns 0 for success, non-zero for failure.
*/
int
mpt2sas_transport_add_host_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
*mpt2sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
{
struct sas_phy *phy;
int phy_index = mpt2sas_phy->phy_id;
INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
phy = sas_phy_alloc(parent_dev, phy_index);
if (!phy) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -1;
}
if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
&mpt2sas_phy->identify))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -1;
}
phy->identify = mpt2sas_phy->identify;
mpt2sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
if (mpt2sas_phy->attached_handle)
_transport_set_identify(ioc, mpt2sas_phy->attached_handle,
&mpt2sas_phy->remote_identify);
phy->identify.phy_identifier = mpt2sas_phy->phy_id;
phy->negotiated_linkrate = _transport_convert_phy_link_rate(
phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
phy_pg0.HwLinkRate >> 4);
phy->minimum_linkrate = _transport_convert_phy_link_rate(
phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
phy->maximum_linkrate = _transport_convert_phy_link_rate(
phy_pg0.ProgrammedLinkRate >> 4);
if ((sas_phy_add(phy))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
sas_phy_free(phy);
return -1;
}
if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
dev_printk(KERN_INFO, &phy->dev,
"add: handle(0x%04x), sas_addr(0x%016llx)\n"
"\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
mpt2sas_phy->handle, (unsigned long long)
mpt2sas_phy->identify.sas_address,
mpt2sas_phy->attached_handle,
(unsigned long long)
mpt2sas_phy->remote_identify.sas_address);
mpt2sas_phy->phy = phy;
return 0;
}
/**
* mpt2sas_transport_add_expander_phy - report expander phy to transport
* @ioc: per adapter object
* @mpt2sas_phy: mpt2sas per phy object
* @expander_pg1: expander page 1
* @parent_dev: parent device class object
*
* Returns 0 for success, non-zero for failure.
*/
int
mpt2sas_transport_add_expander_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
*mpt2sas_phy, Mpi2ExpanderPage1_t expander_pg1, struct device *parent_dev)
{
struct sas_phy *phy;
int phy_index = mpt2sas_phy->phy_id;
INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
phy = sas_phy_alloc(parent_dev, phy_index);
if (!phy) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -1;
}
if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
&mpt2sas_phy->identify))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -1;
}
phy->identify = mpt2sas_phy->identify;
mpt2sas_phy->attached_handle =
le16_to_cpu(expander_pg1.AttachedDevHandle);
if (mpt2sas_phy->attached_handle)
_transport_set_identify(ioc, mpt2sas_phy->attached_handle,
&mpt2sas_phy->remote_identify);
phy->identify.phy_identifier = mpt2sas_phy->phy_id;
phy->negotiated_linkrate = _transport_convert_phy_link_rate(
expander_pg1.NegotiatedLinkRate &
MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
expander_pg1.HwLinkRate >> 4);
phy->minimum_linkrate = _transport_convert_phy_link_rate(
expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
phy->maximum_linkrate = _transport_convert_phy_link_rate(
expander_pg1.ProgrammedLinkRate >> 4);
if ((sas_phy_add(phy))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
sas_phy_free(phy);
return -1;
}
if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
dev_printk(KERN_INFO, &phy->dev,
"add: handle(0x%04x), sas_addr(0x%016llx)\n"
"\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
mpt2sas_phy->handle, (unsigned long long)
mpt2sas_phy->identify.sas_address,
mpt2sas_phy->attached_handle,
(unsigned long long)
mpt2sas_phy->remote_identify.sas_address);
mpt2sas_phy->phy = phy;
return 0;
}
/**
* mpt2sas_transport_update_links - refreshing phy link changes
* @ioc: per adapter object
* @sas_address: sas address of parent expander or sas host
* @handle: attached device handle
* @phy_numberv: phy number
* @link_rate: new link rate
*
* Returns nothing.
*/
void
mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc,
u64 sas_address, u16 handle, u8 phy_number, u8 link_rate)
{
unsigned long flags;
struct _sas_node *sas_node;
struct _sas_phy *mpt2sas_phy;
if (ioc->shost_recovery)
return;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
if (!sas_node)
return;
mpt2sas_phy = &sas_node->phy[phy_number];
mpt2sas_phy->attached_handle = handle;
if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5))
_transport_set_identify(ioc, handle,
&mpt2sas_phy->remote_identify);
else
memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
sas_identify));
if (mpt2sas_phy->phy)
mpt2sas_phy->phy->negotiated_linkrate =
_transport_convert_phy_link_rate(link_rate);
if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
"refresh: parent sas_addr(0x%016llx),\n"
"\tlink_rate(0x%02x), phy(%d)\n"
"\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
(unsigned long long)sas_address,
link_rate, phy_number, handle, (unsigned long long)
mpt2sas_phy->remote_identify.sas_address);
}
static inline void *
phy_to_ioc(struct sas_phy *phy)
{
struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
return shost_priv(shost);
}
static inline void *
rphy_to_ioc(struct sas_rphy *rphy)
{
struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
return shost_priv(shost);
}
static struct _sas_phy *
_transport_find_local_phy(struct MPT2SAS_ADAPTER *ioc, struct sas_phy *phy)
{
int i;
for (i = 0; i < ioc->sas_hba.num_phys; i++)
if (ioc->sas_hba.phy[i].phy == phy)
return(&ioc->sas_hba.phy[i]);
return NULL;
}
/**
* _transport_get_linkerrors -
* @phy: The sas phy object
*
* Only support sas_host direct attached phys.
* Returns 0 for success, non-zero for failure.
*
*/
static int
_transport_get_linkerrors(struct sas_phy *phy)
{
struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
struct _sas_phy *mpt2sas_phy;
Mpi2ConfigReply_t mpi_reply;
Mpi2SasPhyPage1_t phy_pg1;
mpt2sas_phy = _transport_find_local_phy(ioc, phy);
if (!mpt2sas_phy) /* this phy not on sas_host */
return -EINVAL;
if ((mpt2sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
mpt2sas_phy->phy_id))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -ENXIO;
}
if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
"(0x%04x), loginfo(0x%08x)\n", ioc->name,
mpt2sas_phy->phy_id,
le16_to_cpu(mpi_reply.IOCStatus),
le32_to_cpu(mpi_reply.IOCLogInfo));
phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
phy->running_disparity_error_count =
le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
phy->loss_of_dword_sync_count =
le32_to_cpu(phy_pg1.LossDwordSynchCount);
phy->phy_reset_problem_count =
le32_to_cpu(phy_pg1.PhyResetProblemCount);
return 0;
}
/**
* _transport_get_enclosure_identifier -
* @phy: The sas phy object
*
* Obtain the enclosure logical id for an expander.
* Returns 0 for success, non-zero for failure.
*/
static int
_transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
{
struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
struct _sas_node *sas_expander;
unsigned long flags;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
sas_expander = mpt2sas_scsih_expander_find_by_sas_address(ioc,
rphy->identify.sas_address);
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
if (!sas_expander)
return -ENXIO;
*identifier = sas_expander->enclosure_logical_id;
return 0;
}
/**
* _transport_get_bay_identifier -
* @phy: The sas phy object
*
* Returns the slot id for a device that resides inside an enclosure.
*/
static int
_transport_get_bay_identifier(struct sas_rphy *rphy)
{
struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
struct _sas_device *sas_device;
unsigned long flags;
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
rphy->identify.sas_address);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (!sas_device)
return -ENXIO;
return sas_device->slot;
}
/**
* _transport_phy_reset -
* @phy: The sas phy object
* @hard_reset:
*
* Only support sas_host direct attached phys.
* Returns 0 for success, non-zero for failure.
*/
static int
_transport_phy_reset(struct sas_phy *phy, int hard_reset)
{
struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
struct _sas_phy *mpt2sas_phy;
Mpi2SasIoUnitControlReply_t mpi_reply;
Mpi2SasIoUnitControlRequest_t mpi_request;
mpt2sas_phy = _transport_find_local_phy(ioc, phy);
if (!mpt2sas_phy) /* this phy not on sas_host */
return -EINVAL;
memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlReply_t));
mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
mpi_request.Operation = hard_reset ?
MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
mpi_request.PhyNum = mpt2sas_phy->phy_id;
if ((mpt2sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -ENXIO;
}
if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
"(0x%04x), loginfo(0x%08x)\n", ioc->name,
mpt2sas_phy->phy_id,
le16_to_cpu(mpi_reply.IOCStatus),
le32_to_cpu(mpi_reply.IOCLogInfo));
return 0;
}
/**
* _transport_phy_enable - enable/disable phys
* @phy: The sas phy object
* @enable: enable phy when true
*
* Only support sas_host direct attached phys.
* Returns 0 for success, non-zero for failure.
*/
static int
_transport_phy_enable(struct sas_phy *phy, int enable)
{
struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
struct _sas_phy *mpt2sas_phy;
Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
Mpi2ConfigReply_t mpi_reply;
u16 ioc_status;
u16 sz;
int rc = 0;
mpt2sas_phy = _transport_find_local_phy(ioc, phy);
if (!mpt2sas_phy) /* this phy not on sas_host */
return -EINVAL;
/* sas_iounit page 1 */
sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
sizeof(Mpi2SasIOUnit1PhyData_t));
sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
if (!sas_iounit_pg1) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
rc = -ENOMEM;
goto out;
}
if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
sas_iounit_pg1, sz))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
rc = -ENXIO;
goto out;
}
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
rc = -EIO;
goto out;
}
if (enable)
sas_iounit_pg1->PhyData[mpt2sas_phy->phy_id].PhyFlags
&= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
else
sas_iounit_pg1->PhyData[mpt2sas_phy->phy_id].PhyFlags
|= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
out:
kfree(sas_iounit_pg1);
return rc;
}
/**
* _transport_phy_speed - set phy min/max link rates
* @phy: The sas phy object
* @rates: rates defined in sas_phy_linkrates
*
* Only support sas_host direct attached phys.
* Returns 0 for success, non-zero for failure.
*/
static int
_transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
{
struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
struct _sas_phy *mpt2sas_phy;
Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
Mpi2SasPhyPage0_t phy_pg0;
Mpi2ConfigReply_t mpi_reply;
u16 ioc_status;
u16 sz;
int i;
int rc = 0;
mpt2sas_phy = _transport_find_local_phy(ioc, phy);
if (!mpt2sas_phy) /* this phy not on sas_host */
return -EINVAL;
if (!rates->minimum_linkrate)
rates->minimum_linkrate = phy->minimum_linkrate;
else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
rates->minimum_linkrate = phy->minimum_linkrate_hw;
if (!rates->maximum_linkrate)
rates->maximum_linkrate = phy->maximum_linkrate;
else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
rates->maximum_linkrate = phy->maximum_linkrate_hw;
/* sas_iounit page 1 */
sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
sizeof(Mpi2SasIOUnit1PhyData_t));
sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
if (!sas_iounit_pg1) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
rc = -ENOMEM;
goto out;
}
if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
sas_iounit_pg1, sz))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
rc = -ENXIO;
goto out;
}
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
rc = -EIO;
goto out;
}
for (i = 0; i < ioc->sas_hba.num_phys; i++) {
if (mpt2sas_phy->phy_id != i) {
sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
(ioc->sas_hba.phy[i].phy->minimum_linkrate +
(ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
} else {
sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
(rates->minimum_linkrate +
(rates->maximum_linkrate << 4));
}
}
if (mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
sz)) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
rc = -ENXIO;
goto out;
}
/* link reset */
_transport_phy_reset(phy, 0);
/* read phy page 0, then update the rates in the sas transport phy */
if (!mpt2sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
mpt2sas_phy->phy_id)) {
phy->minimum_linkrate = _transport_convert_phy_link_rate(
phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
phy->maximum_linkrate = _transport_convert_phy_link_rate(
phy_pg0.ProgrammedLinkRate >> 4);
phy->negotiated_linkrate = _transport_convert_phy_link_rate(
phy_pg0.NegotiatedLinkRate &
MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
}
out:
kfree(sas_iounit_pg1);
return rc;
}
/**
* _transport_smp_handler - transport portal for smp passthru
* @shost: shost object
* @rphy: sas transport rphy object
* @req:
*
* This used primarily for smp_utils.
* Example:
* smp_rep_general /sys/class/bsg/expander-5:0
*/
static int
_transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
struct request *req)
{
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
Mpi2SmpPassthroughRequest_t *mpi_request;
Mpi2SmpPassthroughReply_t *mpi_reply;
int rc;
u16 smid;
u32 ioc_state;
unsigned long timeleft;
void *psge;
u32 sgl_flags;
u8 issue_reset = 0;
dma_addr_t dma_addr_in = 0;
dma_addr_t dma_addr_out = 0;
u16 wait_state_count;
struct request *rsp = req->next_rq;
if (!rsp) {
printk(MPT2SAS_ERR_FMT "%s: the smp response space is "
"missing\n", ioc->name, __func__);
return -EINVAL;
}
/* do we need to support multiple segments? */
if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) {
printk(MPT2SAS_ERR_FMT "%s: multiple segments req %u %u, "
"rsp %u %u\n", ioc->name, __func__, req->bio->bi_vcnt,
blk_rq_bytes(req), rsp->bio->bi_vcnt, blk_rq_bytes(rsp));
return -EINVAL;
}
if (ioc->shost_recovery) {
printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
__func__, ioc->name);
return -EFAULT;
}
rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
if (rc)
return rc;
if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n", ioc->name,
__func__);
rc = -EAGAIN;
goto out;
}
ioc->transport_cmds.status = MPT2_CMD_PENDING;
wait_state_count = 0;
ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
if (wait_state_count++ == 10) {
printk(MPT2SAS_ERR_FMT
"%s: failed due to ioc not operational\n",
ioc->name, __func__);
rc = -EFAULT;
goto out;
}
ssleep(1);
ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
printk(MPT2SAS_INFO_FMT "%s: waiting for "
"operational state(count=%d)\n", ioc->name,
__func__, wait_state_count);
}
if (wait_state_count)
printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
ioc->name, __func__);
smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
if (!smid) {
printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
rc = -EAGAIN;
goto out;
}
rc = 0;
mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
ioc->transport_cmds.smid = smid;
memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
mpi_request->PhysicalPort = 0xFF;
mpi_request->VF_ID = 0; /* TODO */
mpi_request->VP_ID = 0;
*((u64 *)&mpi_request->SASAddress) = (rphy) ?
cpu_to_le64(rphy->identify.sas_address) :
cpu_to_le64(ioc->sas_hba.sas_address);
mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4);
psge = &mpi_request->SGL;
/* WRITE sgel first */
sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
if (!dma_addr_out) {
mpt2sas_base_free_smid(ioc, smid);
goto unmap;
}
ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(req) - 4),
dma_addr_out);
/* incr sgel */
psge += ioc->sge_size;
/* READ sgel last */
sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
MPI2_SGE_FLAGS_END_OF_LIST);
sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio),
blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
if (!dma_addr_in) {
mpt2sas_base_free_smid(ioc, smid);
goto unmap;
}
ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(rsp) + 4),
dma_addr_in);
dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
"sending smp request\n", ioc->name, __func__));
mpt2sas_base_put_smid_default(ioc, smid);
init_completion(&ioc->transport_cmds.done);
timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
10*HZ);
if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
printk(MPT2SAS_ERR_FMT "%s : timeout\n",
__func__, ioc->name);
_debug_dump_mf(mpi_request,
sizeof(Mpi2SmpPassthroughRequest_t)/4);
if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
issue_reset = 1;
goto issue_host_reset;
}
dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
"complete\n", ioc->name, __func__));
if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
mpi_reply = ioc->transport_cmds.reply;
dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
"%s - reply data transfer size(%d)\n",
ioc->name, __func__,
le16_to_cpu(mpi_reply->ResponseDataLength)));
memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
req->sense_len = sizeof(*mpi_reply);
req->resid_len = 0;
rsp->resid_len -=
le16_to_cpu(mpi_reply->ResponseDataLength);
} else {
dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
"%s - no reply\n", ioc->name, __func__));
rc = -ENXIO;
}
issue_host_reset:
if (issue_reset) {
mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
FORCE_BIG_HAMMER);
rc = -ETIMEDOUT;
}
unmap:
if (dma_addr_out)
pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req),
PCI_DMA_BIDIRECTIONAL);
if (dma_addr_in)
pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp),
PCI_DMA_BIDIRECTIONAL);
out:
ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
mutex_unlock(&ioc->transport_cmds.mutex);
return rc;
}
struct sas_function_template mpt2sas_transport_functions = {
.get_linkerrors = _transport_get_linkerrors,
.get_enclosure_identifier = _transport_get_enclosure_identifier,
.get_bay_identifier = _transport_get_bay_identifier,
.phy_reset = _transport_phy_reset,
.phy_enable = _transport_phy_enable,
.set_phy_speed = _transport_phy_speed,
.smp_handler = _transport_smp_handler,
};
struct scsi_transport_template *mpt2sas_transport_template;
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