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gerrit-public.fairphone.software / kernel / msm-4.9 / 1e585ef51c3fdcf296d2ce5cb8c9e74b1a36cfb4 / . / drivers / scsi / mpt2sas / mpt2sas_transport.c
blob: e689bf20a3ea541b93f94cb50cc900e5ade3a751 [file] [log] [blame]
/*
* SAS Transport Layer for MPT (Message Passing Technology) based controllers
*
* This code is based on drivers/scsi/mpt2sas/mpt2_transport.c
* Copyright (C) 2007-2014 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 || ioc->pci_error_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(struct sas_identify));
device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
/* sas_address */
identify->sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
/* phy number of the parent device this device is linked to */
identify->phy_identifier = sas_device_pg0.PhyNum;
/* 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;
u16 wait_state_count;
if (ioc->shost_recovery || ioc->pci_error_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;
mpi_request->SASAddress = 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_INFO_FMT "report_manufacture - "
"send to sas_addr(0x%016llx)\n", ioc->name,
(unsigned long long)sas_address));
init_completion(&ioc->transport_cmds.done);
mpt2sas_base_put_smid_default(ioc, smid);
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_INFO_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_INFO_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_INFO_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_port - helper function to removing a port
* @ioc: per adapter object
* @mpt2sas_port: mpt2sas per port object
*
* Returns nothing.
*/
static void
_transport_delete_port(struct MPT2SAS_ADAPTER *ioc,
struct _sas_port *mpt2sas_port)
{
u64 sas_address = mpt2sas_port->remote_identify.sas_address;
enum sas_device_type device_type =
mpt2sas_port->remote_identify.device_type;
dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
"remove: sas_addr(0x%016llx)\n",
(unsigned long long) sas_address);
ioc->logging_level |= MPT_DEBUG_TRANSPORT;
if (device_type == SAS_END_DEVICE)
mpt2sas_device_remove_by_sas_address(ioc, sas_address);
else if (device_type == SAS_EDGE_EXPANDER_DEVICE ||
device_type == SAS_FANOUT_EXPANDER_DEVICE)
mpt2sas_expander_remove(ioc, sas_address);
ioc->logging_level &= ~MPT_DEBUG_TRANSPORT;
}
/**
* _transport_delete_phy - helper function to removing single phy from port
* @ioc: per adapter object
* @mpt2sas_port: mpt2sas per port object
* @mpt2sas_phy: mpt2sas per phy object
*
* Returns nothing.
*/
static void
_transport_delete_phy(struct MPT2SAS_ADAPTER *ioc,
struct _sas_port *mpt2sas_port, struct _sas_phy *mpt2sas_phy)
{
u64 sas_address = mpt2sas_port->remote_identify.sas_address;
dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
"remove: sas_addr(0x%016llx), phy(%d)\n",
(unsigned long long) sas_address, mpt2sas_phy->phy_id);
list_del(&mpt2sas_phy->port_siblings);
mpt2sas_port->num_phys--;
sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
mpt2sas_phy->phy_belongs_to_port = 0;
}
/**
* _transport_add_phy - helper function to adding single phy to port
* @ioc: per adapter object
* @mpt2sas_port: mpt2sas per port object
* @mpt2sas_phy: mpt2sas per phy object
*
* Returns nothing.
*/
static void
_transport_add_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_port *mpt2sas_port,
struct _sas_phy *mpt2sas_phy)
{
u64 sas_address = mpt2sas_port->remote_identify.sas_address;
dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
"add: sas_addr(0x%016llx), phy(%d)\n", (unsigned long long)
sas_address, mpt2sas_phy->phy_id);
list_add_tail(&mpt2sas_phy->port_siblings, &mpt2sas_port->phy_list);
mpt2sas_port->num_phys++;
sas_port_add_phy(mpt2sas_port->port, mpt2sas_phy->phy);
mpt2sas_phy->phy_belongs_to_port = 1;
}
/**
* _transport_add_phy_to_an_existing_port - adding new phy to existing port
* @ioc: per adapter object
* @sas_node: sas node object (either expander or sas host)
* @mpt2sas_phy: mpt2sas per phy object
* @sas_address: sas address of device/expander were phy needs to be added to
*
* Returns nothing.
*/
static void
_transport_add_phy_to_an_existing_port(struct MPT2SAS_ADAPTER *ioc,
struct _sas_node *sas_node, struct _sas_phy *mpt2sas_phy, u64 sas_address)
{
struct _sas_port *mpt2sas_port;
struct _sas_phy *phy_srch;
if (mpt2sas_phy->phy_belongs_to_port == 1)
return;
list_for_each_entry(mpt2sas_port, &sas_node->sas_port_list,
port_list) {
if (mpt2sas_port->remote_identify.sas_address !=
sas_address)
continue;
list_for_each_entry(phy_srch, &mpt2sas_port->phy_list,
port_siblings) {
if (phy_srch == mpt2sas_phy)
return;
}
_transport_add_phy(ioc, mpt2sas_port, mpt2sas_phy);
return;
}
}
/**
* _transport_del_phy_from_an_existing_port - delete phy from existing port
* @ioc: per adapter object
* @sas_node: sas node object (either expander or sas host)
* @mpt2sas_phy: mpt2sas per phy object
*
* Returns nothing.
*/
static void
_transport_del_phy_from_an_existing_port(struct MPT2SAS_ADAPTER *ioc,
struct _sas_node *sas_node, struct _sas_phy *mpt2sas_phy)
{
struct _sas_port *mpt2sas_port, *next;
struct _sas_phy *phy_srch;
if (mpt2sas_phy->phy_belongs_to_port == 0)
return;
list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
port_list) {
list_for_each_entry(phy_srch, &mpt2sas_port->phy_list,
port_siblings) {
if (phy_srch != mpt2sas_phy)
continue;
if (mpt2sas_port->num_phys == 1)
_transport_delete_port(ioc, mpt2sas_port);
else
_transport_delete_phy(ioc, mpt2sas_port,
mpt2sas_phy);
return;
}
}
}
/**
* _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)
continue;
if (sas_node->phy[i].phy_belongs_to_port == 1)
_transport_del_phy_from_an_existing_port(ioc, sas_node,
&sas_node->phy[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);
if (!sas_node) {
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
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) {
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
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));
}
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
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 || ioc->pci_error_recovery)
return;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
if (!sas_node) {
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
return;
}
mpt2sas_phy = &sas_node->phy[phy_number];
mpt2sas_phy->attached_handle = handle;
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) {
_transport_set_identify(ioc, handle,
&mpt2sas_phy->remote_identify);
_transport_add_phy_to_an_existing_port(ioc, sas_node,
mpt2sas_phy, mpt2sas_phy->remote_identify.sas_address);
} 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);
}
/* report phy error log structure */
struct phy_error_log_request{
u8 smp_frame_type; /* 0x40 */
u8 function; /* 0x11 */
u8 allocated_response_length;
u8 request_length; /* 02 */
u8 reserved_1[5];
u8 phy_identifier;
u8 reserved_2[2];
};
/* report phy error log reply structure */
struct phy_error_log_reply{
u8 smp_frame_type; /* 0x41 */
u8 function; /* 0x11 */
u8 function_result;
u8 response_length;
__be16 expander_change_count;
u8 reserved_1[3];
u8 phy_identifier;
u8 reserved_2[2];
__be32 invalid_dword;
__be32 running_disparity_error;
__be32 loss_of_dword_sync;
__be32 phy_reset_problem;
};
/**
* _transport_get_expander_phy_error_log - return expander counters
* @ioc: per adapter object
* @phy: The sas phy object
*
* Returns 0 for success, non-zero for failure.
*
*/
static int
_transport_get_expander_phy_error_log(struct MPT2SAS_ADAPTER *ioc,
struct sas_phy *phy)
{
Mpi2SmpPassthroughRequest_t *mpi_request;
Mpi2SmpPassthroughReply_t *mpi_reply;
struct phy_error_log_request *phy_error_log_request;
struct phy_error_log_reply *phy_error_log_reply;
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;
u16 wait_state_count;
if (ioc->shost_recovery || ioc->pci_error_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;
}
mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
ioc->transport_cmds.smid = smid;
sz = sizeof(struct phy_error_log_request) +
sizeof(struct phy_error_log_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;
}
rc = -EINVAL;
memset(data_out, 0, sz);
phy_error_log_request = data_out;
phy_error_log_request->smp_frame_type = 0x40;
phy_error_log_request->function = 0x11;
phy_error_log_request->request_length = 2;
phy_error_log_request->allocated_response_length = 0;
phy_error_log_request->phy_identifier = phy->number;
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;
mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
mpi_request->RequestDataLength =
cpu_to_le16(sizeof(struct phy_error_log_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 phy_error_log_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 phy_error_log_reply), data_out_dma +
sizeof(struct phy_error_log_request));
dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "phy_error_log - "
"send to sas_addr(0x%016llx), phy(%d)\n", ioc->name,
(unsigned long long)phy->identify.sas_address, phy->number));
init_completion(&ioc->transport_cmds.done);
mpt2sas_base_put_smid_default(ioc, smid);
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_INFO_FMT "phy_error_log - "
"complete\n", ioc->name));
if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
mpi_reply = ioc->transport_cmds.reply;
dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
"phy_error_log - reply data transfer size(%d)\n",
ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
sizeof(struct phy_error_log_reply))
goto out;
phy_error_log_reply = data_out +
sizeof(struct phy_error_log_request);
dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
"phy_error_log - function_result(%d)\n",
ioc->name, phy_error_log_reply->function_result));
phy->invalid_dword_count =
be32_to_cpu(phy_error_log_reply->invalid_dword);
phy->running_disparity_error_count =
be32_to_cpu(phy_error_log_reply->running_disparity_error);
phy->loss_of_dword_sync_count =
be32_to_cpu(phy_error_log_reply->loss_of_dword_sync);
phy->phy_reset_problem_count =
be32_to_cpu(phy_error_log_reply->phy_reset_problem);
rc = 0;
} else
dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
"phy_error_log - 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_get_linkerrors - return phy counters for both hba and expanders
* @phy: The sas phy object
*
* 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);
unsigned long flags;
Mpi2ConfigReply_t mpi_reply;
Mpi2SasPhyPage1_t phy_pg1;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
if (_transport_sas_node_find_by_sas_address(ioc,
phy->identify.sas_address) == NULL) {
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
return -EINVAL;
}
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
if (phy->identify.sas_address != ioc->sas_hba.sas_address)
return _transport_get_expander_phy_error_log(ioc, phy);
/* get hba phy error logs */
if ((mpt2sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
phy->number))) {
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,
phy->number, 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_device *sas_device;
unsigned long flags;
int rc;
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
rphy->identify.sas_address);
if (sas_device) {
*identifier = sas_device->enclosure_logical_id;
rc = 0;
} else {
*identifier = 0;
rc = -ENXIO;
}
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
return rc;
}
/**
* _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;
int rc;
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
rphy->identify.sas_address);
if (sas_device)
rc = sas_device->slot;
else
rc = -ENXIO;
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
return rc;
}
/* phy control request structure */
struct phy_control_request{
u8 smp_frame_type; /* 0x40 */
u8 function; /* 0x91 */
u8 allocated_response_length;
u8 request_length; /* 0x09 */
u16 expander_change_count;
u8 reserved_1[3];
u8 phy_identifier;
u8 phy_operation;
u8 reserved_2[13];
u64 attached_device_name;
u8 programmed_min_physical_link_rate;
u8 programmed_max_physical_link_rate;
u8 reserved_3[6];
};
/* phy control reply structure */
struct phy_control_reply{
u8 smp_frame_type; /* 0x41 */
u8 function; /* 0x11 */
u8 function_result;
u8 response_length;
};
#define SMP_PHY_CONTROL_LINK_RESET (0x01)
#define SMP_PHY_CONTROL_HARD_RESET (0x02)
#define SMP_PHY_CONTROL_DISABLE (0x03)
/**
* _transport_expander_phy_control - expander phy control
* @ioc: per adapter object
* @phy: The sas phy object
*
* Returns 0 for success, non-zero for failure.
*
*/
static int
_transport_expander_phy_control(struct MPT2SAS_ADAPTER *ioc,
struct sas_phy *phy, u8 phy_operation)
{
Mpi2SmpPassthroughRequest_t *mpi_request;
Mpi2SmpPassthroughReply_t *mpi_reply;
struct phy_control_request *phy_control_request;
struct phy_control_reply *phy_control_reply;
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;
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;
}
mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
ioc->transport_cmds.smid = smid;
sz = sizeof(struct phy_control_request) +
sizeof(struct phy_control_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;
}
rc = -EINVAL;
memset(data_out, 0, sz);
phy_control_request = data_out;
phy_control_request->smp_frame_type = 0x40;
phy_control_request->function = 0x91;
phy_control_request->request_length = 9;
phy_control_request->allocated_response_length = 0;
phy_control_request->phy_identifier = phy->number;
phy_control_request->phy_operation = phy_operation;
phy_control_request->programmed_min_physical_link_rate =
phy->minimum_linkrate << 4;
phy_control_request->programmed_max_physical_link_rate =
phy->maximum_linkrate << 4;
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;
mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
mpi_request->RequestDataLength =
cpu_to_le16(sizeof(struct phy_error_log_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 phy_control_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 phy_control_reply), data_out_dma +
sizeof(struct phy_control_request));
dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "phy_control - "
"send to sas_addr(0x%016llx), phy(%d), opcode(%d)\n", ioc->name,
(unsigned long long)phy->identify.sas_address, phy->number,
phy_operation));
init_completion(&ioc->transport_cmds.done);
mpt2sas_base_put_smid_default(ioc, smid);
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_INFO_FMT "phy_control - "
"complete\n", ioc->name));
if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
mpi_reply = ioc->transport_cmds.reply;
dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
"phy_control - reply data transfer size(%d)\n",
ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
sizeof(struct phy_control_reply))
goto out;
phy_control_reply = data_out +
sizeof(struct phy_control_request);
dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
"phy_control - function_result(%d)\n",
ioc->name, phy_control_reply->function_result));
rc = 0;
} else
dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
"phy_control - 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_phy_reset -
* @phy: The sas phy object
* @hard_reset:
*
* 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);
Mpi2SasIoUnitControlReply_t mpi_reply;
Mpi2SasIoUnitControlRequest_t mpi_request;
unsigned long flags;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
if (_transport_sas_node_find_by_sas_address(ioc,
phy->identify.sas_address) == NULL) {
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
return -EINVAL;
}
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
/* handle expander phys */
if (phy->identify.sas_address != ioc->sas_hba.sas_address)
return _transport_expander_phy_control(ioc, phy,
(hard_reset == 1) ? SMP_PHY_CONTROL_HARD_RESET :
SMP_PHY_CONTROL_LINK_RESET);
/* handle hba phys */
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 = phy->number;
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,
phy->number, 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);
Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
Mpi2ConfigReply_t mpi_reply;
u16 ioc_status;
u16 sz;
int rc = 0;
unsigned long flags;
int i, discovery_active;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
if (_transport_sas_node_find_by_sas_address(ioc,
phy->identify.sas_address) == NULL) {
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
return -EINVAL;
}
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
/* handle expander phys */
if (phy->identify.sas_address != ioc->sas_hba.sas_address)
return _transport_expander_phy_control(ioc, phy,
(enable == 1) ? SMP_PHY_CONTROL_LINK_RESET :
SMP_PHY_CONTROL_DISABLE);
/* handle hba phys */
/* read sas_iounit page 0 */
sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
sizeof(Mpi2SasIOUnit0PhyData_t));
sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
if (!sas_iounit_pg0) {
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_pg0(ioc, &mpi_reply,
sas_iounit_pg0, 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;
}
/* unable to enable/disable phys when when discovery is active */
for (i = 0, discovery_active = 0; i < ioc->sas_hba.num_phys ; i++) {
if (sas_iounit_pg0->PhyData[i].PortFlags &
MPI2_SASIOUNIT0_PORTFLAGS_DISCOVERY_IN_PROGRESS) {
printk(MPT2SAS_ERR_FMT "discovery is active on "
"port = %d, phy = %d: unable to enable/disable "
"phys, try again later!\n", ioc->name,
sas_iounit_pg0->PhyData[i].Port, i);
discovery_active = 1;
}
}
if (discovery_active) {
rc = -EAGAIN;
goto out;
}
/* read 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;
}
/* copy Port/PortFlags/PhyFlags from page 0 */
for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
sas_iounit_pg1->PhyData[i].Port =
sas_iounit_pg0->PhyData[i].Port;
sas_iounit_pg1->PhyData[i].PortFlags =
(sas_iounit_pg0->PhyData[i].PortFlags &
MPI2_SASIOUNIT0_PORTFLAGS_AUTO_PORT_CONFIG);
sas_iounit_pg1->PhyData[i].PhyFlags =
(sas_iounit_pg0->PhyData[i].PhyFlags &
(MPI2_SASIOUNIT0_PHYFLAGS_ZONING_ENABLED +
MPI2_SASIOUNIT0_PHYFLAGS_PHY_DISABLED));
}
if (enable)
sas_iounit_pg1->PhyData[phy->number].PhyFlags
&= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
else
sas_iounit_pg1->PhyData[phy->number].PhyFlags
|= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
/* link reset */
if (enable)
_transport_phy_reset(phy, 0);
out:
kfree(sas_iounit_pg1);
kfree(sas_iounit_pg0);
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);
Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
Mpi2SasPhyPage0_t phy_pg0;
Mpi2ConfigReply_t mpi_reply;
u16 ioc_status;
u16 sz;
int i;
int rc = 0;
unsigned long flags;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
if (_transport_sas_node_find_by_sas_address(ioc,
phy->identify.sas_address) == NULL) {
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
return -EINVAL;
}
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
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;
/* handle expander phys */
if (phy->identify.sas_address != ioc->sas_hba.sas_address) {
phy->minimum_linkrate = rates->minimum_linkrate;
phy->maximum_linkrate = rates->maximum_linkrate;
return _transport_expander_phy_control(ioc, phy,
SMP_PHY_CONTROL_LINK_RESET);
}
/* handle hba phys */
/* 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 (phy->number != 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,
phy->number)) {
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;
dma_addr_t pci_dma_in = 0;
dma_addr_t pci_dma_out = 0;
void *pci_addr_in = NULL;
void *pci_addr_out = NULL;
u16 wait_state_count;
struct request *rsp = req->next_rq;
struct bio_vec bvec;
struct bvec_iter iter;
if (!rsp) {
printk(MPT2SAS_ERR_FMT "%s: the smp response space is "
"missing\n", ioc->name, __func__);
return -EINVAL;
}
if (ioc->shost_recovery || ioc->pci_error_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;
/* Check if the request is split across multiple segments */
if (bio_multiple_segments(req->bio)) {
u32 offset = 0;
/* Allocate memory and copy the request */
pci_addr_out = pci_alloc_consistent(ioc->pdev,
blk_rq_bytes(req), &pci_dma_out);
if (!pci_addr_out) {
printk(MPT2SAS_INFO_FMT "%s(): PCI Addr out = NULL\n",
ioc->name, __func__);
rc = -ENOMEM;
goto out;
}
bio_for_each_segment(bvec, req->bio, iter) {
memcpy(pci_addr_out + offset,
page_address(bvec.bv_page) + bvec.bv_offset,
bvec.bv_len);
offset += bvec.bv_len;
}
} else {
dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
if (!dma_addr_out) {
printk(MPT2SAS_INFO_FMT "%s(): DMA Addr out = NULL\n",
ioc->name, __func__);
rc = -ENOMEM;
goto free_pci;
}
}
/* Check if the response needs to be populated across
* multiple segments */
if (bio_multiple_segments(rsp->bio)) {
pci_addr_in = pci_alloc_consistent(ioc->pdev, blk_rq_bytes(rsp),
&pci_dma_in);
if (!pci_addr_in) {
printk(MPT2SAS_INFO_FMT "%s(): PCI Addr in = NULL\n",
ioc->name, __func__);
rc = -ENOMEM;
goto unmap;
}
} else {
dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio),
blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
if (!dma_addr_in) {
printk(MPT2SAS_INFO_FMT "%s(): DMA Addr in = NULL\n",
ioc->name, __func__);
rc = -ENOMEM;
goto unmap;
}
}
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 unmap;
}
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 unmap;
}
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;
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;
if (bio_multiple_segments(req->bio)) {
ioc->base_add_sg_single(psge, sgl_flags |
(blk_rq_bytes(req) - 4), pci_dma_out);
} else {
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;
if (bio_multiple_segments(rsp->bio)) {
ioc->base_add_sg_single(psge, sgl_flags |
(blk_rq_bytes(rsp) + 4), pci_dma_in);
} else {
ioc->base_add_sg_single(psge, sgl_flags |
(blk_rq_bytes(rsp) + 4), dma_addr_in);
}
dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "%s - "
"sending smp request\n", ioc->name, __func__));
init_completion(&ioc->transport_cmds.done);
mpt2sas_base_put_smid_default(ioc, smid);
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_INFO_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_INFO_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);
/* check if the resp needs to be copied from the allocated
* pci mem */
if (bio_multiple_segments(rsp->bio)) {
u32 offset = 0;
u32 bytes_to_copy =
le16_to_cpu(mpi_reply->ResponseDataLength);
bio_for_each_segment(bvec, rsp->bio, iter) {
if (bytes_to_copy <= bvec.bv_len) {
memcpy(page_address(bvec.bv_page) +
bvec.bv_offset, pci_addr_in +
offset, bytes_to_copy);
break;
} else {
memcpy(page_address(bvec.bv_page) +
bvec.bv_offset, pci_addr_in +
offset, bvec.bv_len);
bytes_to_copy -= bvec.bv_len;
}
offset += bvec.bv_len;
}
}
} else {
dtransportprintk(ioc, printk(MPT2SAS_INFO_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);
free_pci:
if (pci_addr_out)
pci_free_consistent(ioc->pdev, blk_rq_bytes(req), pci_addr_out,
pci_dma_out);
if (pci_addr_in)
pci_free_consistent(ioc->pdev, blk_rq_bytes(rsp), pci_addr_in,
pci_dma_in);
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;