--- /dev/null
+/*
+ * 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
+ * Copyright (C) 20013-2014 Avago Technologies
+ * (mailto: MPT-FusionLinux.pdl@avagotech.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;
Code Review / kvmfornfv.git / blobdiff