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authorEric Moore <eric.moore@lsi.com>2009-03-09 01:21:12 -0600
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2009-03-13 16:08:49 -0500
commit635374e7eb110e80d9918b8611198edd56a32975 (patch)
tree1c96f9dac921b0b26ee4e93ecd9c79a96fbc7ba6 /drivers/scsi/mpt2sas/mpt2sas_transport.c
parentdec3f95959bff957f5bcbf16c2a2823f7e33d1e7 (diff)
[SCSI] mpt2sas v00.100.11.15
* This is new scsi lld device driver from LSI supporting the SAS 2.0 standard. I have split patchs by filename. * Here is list of new 6gb host controllers: LSI SAS2004 LSI SAS2008 LSI SAS2108 LSI SAS2116 * Here are the changes in the 4th posting of this patch set: (1) fix compile errors when SCSI_MPT2SAS_LOGGING is not enabled (2) add mpt2sas to the SCSI Mid Layer Makefile (3) append mpt2sas_ to the naming of all non-static functions (4) fix oops for SMP_PASSTHRU (5) doorbell algorithm imported changes from windows driver * Here are the changes in the 3rd posting of this patch set: (1) add readl following writel from the function that disables interrupts (2) replace 0xFFFFFFFFFFFFFFFFULL with ~0ULL (3) when calling pci_enable_msix, only pass one msix entry (instead of 15). (4) remove the "current HW implementation uses..... " comment in the sources (5) merged bug fix for SIGIO/POLLIN notifcation; reported by the storlib team. * Here are the changes in the 2nd posting of this patch set: (1) use little endian types in the mpi headers (2) merged in bug fix's from inhouse drivers. Signed-off-by: Eric Moore <eric.moore@lsi.com> Tested-by: peter Bogdanovic <pbog@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/mpt2sas/mpt2sas_transport.c')
-rw-r--r--drivers/scsi/mpt2sas/mpt2sas_transport.c1211
1 files changed, 1211 insertions, 0 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_transport.c b/drivers/scsi/mpt2sas/mpt2sas_transport.c
new file mode 100644
index 00000000000..e03dc0b1e1a
--- /dev/null
+++ b/drivers/scsi/mpt2sas/mpt2sas_transport.c
@@ -0,0 +1,1211 @@
+/*
+ * SAS Transport Layer for MPT (Message Passing Technology) based controllers
+ *
+ * This code is based on drivers/scsi/mpt2sas/mpt2_transport.c
+ * Copyright (C) 2007-2008 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 <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_handle - sas node search
+ * @ioc: per adapter object
+ * @handle: expander or hba handle (assigned by firmware)
+ * 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_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle)
+{
+ int i;
+
+ for (i = 0; i < ioc->sas_hba.num_phys; i++)
+ if (ioc->sas_hba.phy[i].handle == handle)
+ return &ioc->sas_hba;
+
+ return mpt2sas_scsih_expander_find_by_handle(ioc, handle);
+}
+
+/**
+ * _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 ((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 -1;
+ }
+
+ 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 -1;
+ }
+
+ memset(identify, 0, sizeof(identify));
+ device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
+
+ /* sas_address */
+ identify->sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
+
+ /* device_type */
+ switch (device_info & MPI2_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) {
+ case MPI2_SAS_DEVICE_INFO_NO_DEVICE:
+ identify->device_type = SAS_PHY_UNUSED;
+ break;
+ case MPI2_SAS_DEVICE_INFO_END_DEVICE:
+ identify->device_type = SAS_END_DEVICE;
+ break;
+ case MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER:
+ identify->device_type = SAS_EDGE_EXPANDER_DEVICE;
+ break;
+ case MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER:
+ identify->device_type = SAS_FANOUT_EXPANDER_DEVICE;
+ break;
+ }
+
+ /* initiator_port_protocols */
+ if (device_info & MPI2_SAS_DEVICE_INFO_SSP_INITIATOR)
+ identify->initiator_port_protocols |= SAS_PROTOCOL_SSP;
+ if (device_info & MPI2_SAS_DEVICE_INFO_STP_INITIATOR)
+ identify->initiator_port_protocols |= SAS_PROTOCOL_STP;
+ if (device_info & MPI2_SAS_DEVICE_INFO_SMP_INITIATOR)
+ identify->initiator_port_protocols |= SAS_PROTOCOL_SMP;
+ if (device_info & MPI2_SAS_DEVICE_INFO_SATA_HOST)
+ identify->initiator_port_protocols |= SAS_PROTOCOL_SATA;
+
+ /* target_port_protocols */
+ if (device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET)
+ identify->target_port_protocols |= SAS_PROTOCOL_SSP;
+ if (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
+ identify->target_port_protocols |= SAS_PROTOCOL_STP;
+ if (device_info & MPI2_SAS_DEVICE_INFO_SMP_TARGET)
+ identify->target_port_protocols |= SAS_PROTOCOL_SMP;
+ if (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
+ identify->target_port_protocols |= SAS_PROTOCOL_SATA;
+
+ return 0;
+}
+
+/**
+ * mpt2sas_transport_done - internal transport layer callback handler.
+ * @ioc: per adapter object
+ * @smid: system request message index
+ * @VF_ID: virtual function id
+ * @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 nothing.
+ */
+void
+mpt2sas_transport_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID,
+ 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;
+ if (ioc->transport_cmds.smid != smid)
+ return;
+ 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);
+}
+
+/* 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:1;
+ u8 reserved1:7;
+ 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;
+ unsigned long flags;
+ void *data_out = NULL;
+ dma_addr_t data_out_dma;
+ u32 sz;
+ u64 *sas_address_le;
+ u16 wait_state_count;
+
+ spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
+ if (ioc->ioc_reset_in_progress) {
+ spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
+ printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
+ __func__, ioc->name);
+ return -EFAULT;
+ }
+ spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
+
+ 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;
+ sas_address_le = (u64 *)&mpi_request->SASAddress;
+ *sas_address_le = cpu_to_le64(sas_address);
+ mpi_request->RequestDataLength = sizeof(struct rep_manu_request);
+ psge = &mpi_request->SGL;
+
+ /* WRITE sgel first */
+ sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
+ MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
+ sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
+ ioc->base_add_sg_single(psge, sgl_flags |
+ sizeof(struct rep_manu_request), data_out_dma);
+
+ /* incr sgel */
+ psge += ioc->sge_size;
+
+ /* READ sgel last */
+ sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
+ MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
+ MPI2_SGE_FLAGS_END_OF_LIST);
+ sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
+ ioc->base_add_sg_single(psge, sgl_flags |
+ sizeof(struct rep_manu_reply), data_out_dma +
+ sizeof(struct rep_manu_request));
+
+ dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "report_manufacture - "
+ "send to sas_addr(0x%016llx)\n", ioc->name,
+ (unsigned long long)sas_address));
+ mpt2sas_base_put_smid_default(ioc, smid, 0 /* VF_ID */);
+ timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
+ 10*HZ);
+
+ if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
+ printk(MPT2SAS_ERR_FMT "%s: timeout\n",
+ ioc->name, __func__);
+ _debug_dump_mf(mpi_request,
+ sizeof(Mpi2SmpPassthroughRequest_t)/4);
+ if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
+ issue_reset = 1;
+ goto issue_host_reset;
+ }
+
+ dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "report_manufacture - "
+ "complete\n", ioc->name));
+
+ if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
+ u8 *tmp;
+
+ mpi_reply = ioc->transport_cmds.reply;
+
+ dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
+ "report_manufacture - reply data transfer size(%d)\n",
+ ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
+
+ if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
+ sizeof(struct rep_manu_reply))
+ goto out;
+
+ manufacture_reply = data_out + sizeof(struct rep_manu_request);
+ strncpy(edev->vendor_id, manufacture_reply->vendor_id,
+ SAS_EXPANDER_VENDOR_ID_LEN);
+ strncpy(edev->product_id, manufacture_reply->product_id,
+ SAS_EXPANDER_PRODUCT_ID_LEN);
+ strncpy(edev->product_rev, manufacture_reply->product_rev,
+ SAS_EXPANDER_PRODUCT_REV_LEN);
+ edev->level = manufacture_reply->sas_format;
+ if (manufacture_reply->sas_format) {
+ strncpy(edev->component_vendor_id,
+ manufacture_reply->component_vendor_id,
+ SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN);
+ tmp = (u8 *)&manufacture_reply->component_id;
+ edev->component_id = tmp[0] << 8 | tmp[1];
+ edev->component_revision_id =
+ manufacture_reply->component_revision_id;
+ }
+ } else
+ dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
+ "report_manufacture - no reply\n", ioc->name));
+
+ issue_host_reset:
+ if (issue_reset)
+ mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
+ FORCE_BIG_HAMMER);
+ out:
+ ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
+ if (data_out)
+ pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
+
+ mutex_unlock(&ioc->transport_cmds.mutex);
+ return rc;
+}
+
+/**
+ * mpt2sas_transport_port_add - insert port to the list
+ * @ioc: per adapter object
+ * @handle: handle of attached device
+ * @parent_handle: parent handle(either hba or expander)
+ * 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,
+ u16 parent_handle)
+{
+ 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;
+
+ if (!parent_handle)
+ return NULL;
+
+ 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_handle(ioc, parent_handle);
+ spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
+
+ if (!sas_node) {
+ printk(MPT2SAS_ERR_FMT "%s: Could not find parent(0x%04x)!\n",
+ ioc->name, __func__, parent_handle);
+ goto out_fail;
+ }
+
+ mpt2sas_port->handle = parent_handle;
+ mpt2sas_port->sas_address = sas_node->sas_address;
+ 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;
+ }
+
+ 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_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
+ * @parent_handle: handle to the upstream parent(either hba or expander)
+ * 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,
+ u16 parent_handle)
+{
+ 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_handle(ioc, parent_handle);
+ spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
+ if (!sas_node)
+ return;
+ list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
+ port_list) {
+ if (mpt2sas_port->remote_identify.sas_address != sas_address)
+ continue;
+ found = 1;
+ list_del(&mpt2sas_port->port_list);
+ goto out;
+ }
+ out:
+ if (!found)
+ return;
+
+ for (i = 0; i < sas_node->num_phys; i++) {
+ if (sas_node->phy[i].remote_identify.sas_address == sas_address)
+ memset(&sas_node->phy[i].remote_identify, 0 ,
+ sizeof(struct sas_identify));
+ }
+
+ list_for_each_entry_safe(mpt2sas_phy, next_phy,
+ &mpt2sas_port->phy_list, port_siblings) {
+ if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
+ dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
+ "remove: parent_handle(0x%04x), "
+ "sas_addr(0x%016llx), phy(%d)\n", parent_handle,
+ (unsigned long long)
+ mpt2sas_port->remote_identify.sas_address,
+ mpt2sas_phy->phy_id);
+ 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_phy_link_change - refreshing phy link changes and attached devices
+ * @ioc: per adapter object
+ * @handle: handle to sas_host or expander
+ * @attached_handle: attached device handle
+ * @phy_numberv: phy number
+ * @link_rate: new link rate
+ *
+ * Returns nothing.
+ */
+void
+mpt2sas_transport_update_phy_link_change(struct MPT2SAS_ADAPTER *ioc,
+ u16 handle, u16 attached_handle, u8 phy_number, u8 link_rate)
+{
+ unsigned long flags;
+ struct _sas_node *sas_node;
+ struct _sas_phy *mpt2sas_phy;
+
+ spin_lock_irqsave(&ioc->sas_node_lock, flags);
+ sas_node = _transport_sas_node_find_by_handle(ioc, handle);
+ spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
+ if (!sas_node)
+ return;
+
+ mpt2sas_phy = &sas_node->phy[phy_number];
+ mpt2sas_phy->attached_handle = attached_handle;
+ if (attached_handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5))
+ _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
+ &mpt2sas_phy->remote_identify);
+ else
+ memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
+ sas_identify));
+
+ if (mpt2sas_phy->phy)
+ mpt2sas_phy->phy->negotiated_linkrate =
+ _transport_convert_phy_link_rate(link_rate);
+
+ if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
+ dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
+ "refresh: handle(0x%04x), sas_addr(0x%016llx),\n"
+ "\tlink_rate(0x%02x), phy(%d)\n"
+ "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
+ handle, (unsigned long long)
+ mpt2sas_phy->identify.sas_address, link_rate,
+ phy_number, attached_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);
+}
+
+/**
+ * transport_get_linkerrors -
+ * @phy: The sas phy object
+ *
+ * Only support sas_host direct attached phys.
+ * Returns 0 for success, non-zero for failure.
+ *
+ */
+static int
+transport_get_linkerrors(struct sas_phy *phy)
+{
+ struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
+ struct _sas_phy *mpt2sas_phy;
+ Mpi2ConfigReply_t mpi_reply;
+ Mpi2SasPhyPage1_t phy_pg1;
+ int i;
+
+ for (i = 0, mpt2sas_phy = NULL; i < ioc->sas_hba.num_phys &&
+ !mpt2sas_phy; i++) {
+ if (ioc->sas_hba.phy[i].phy != phy)
+ continue;
+ mpt2sas_phy = &ioc->sas_hba.phy[i];
+ }
+
+ if (!mpt2sas_phy) /* this phy not on sas_host */
+ return -EINVAL;
+
+ if ((mpt2sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
+ mpt2sas_phy->phy_id))) {
+ printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+ ioc->name, __FILE__, __LINE__, __func__);
+ return -ENXIO;
+ }
+
+ if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
+ printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
+ "(0x%04x), loginfo(0x%08x)\n", ioc->name,
+ mpt2sas_phy->phy_id,
+ le16_to_cpu(mpi_reply.IOCStatus),
+ le32_to_cpu(mpi_reply.IOCLogInfo));
+
+ phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
+ phy->running_disparity_error_count =
+ le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
+ phy->loss_of_dword_sync_count =
+ le32_to_cpu(phy_pg1.LossDwordSynchCount);
+ phy->phy_reset_problem_count =
+ le32_to_cpu(phy_pg1.PhyResetProblemCount);
+ return 0;
+}
+
+/**
+ * transport_get_enclosure_identifier -
+ * @phy: The sas phy object
+ *
+ * Obtain the enclosure logical id for an expander.
+ * Returns 0 for success, non-zero for failure.
+ */
+static int
+transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
+{
+ struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
+ struct _sas_node *sas_expander;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ioc->sas_node_lock, flags);
+ sas_expander = mpt2sas_scsih_expander_find_by_sas_address(ioc,
+ rphy->identify.sas_address);
+ spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
+
+ if (!sas_expander)
+ return -ENXIO;
+
+ *identifier = sas_expander->enclosure_logical_id;
+ return 0;
+}
+
+/**
+ * transport_get_bay_identifier -
+ * @phy: The sas phy object
+ *
+ * Returns the slot id for a device that resides inside an enclosure.
+ */
+static int
+transport_get_bay_identifier(struct sas_rphy *rphy)
+{
+ struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
+ struct _sas_device *sas_device;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ioc->sas_device_lock, flags);
+ sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
+ rphy->identify.sas_address);
+ spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
+
+ if (!sas_device)
+ return -ENXIO;
+
+ return sas_device->slot;
+}
+
+/**
+ * transport_phy_reset -
+ * @phy: The sas phy object
+ * @hard_reset:
+ *
+ * Only support sas_host direct attached phys.
+ * Returns 0 for success, non-zero for failure.
+ */
+static int
+transport_phy_reset(struct sas_phy *phy, int hard_reset)
+{
+ struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
+ struct _sas_phy *mpt2sas_phy;
+ Mpi2SasIoUnitControlReply_t mpi_reply;
+ Mpi2SasIoUnitControlRequest_t mpi_request;
+ int i;
+
+ for (i = 0, mpt2sas_phy = NULL; i < ioc->sas_hba.num_phys &&
+ !mpt2sas_phy; i++) {
+ if (ioc->sas_hba.phy[i].phy != phy)
+ continue;
+ mpt2sas_phy = &ioc->sas_hba.phy[i];
+ }
+
+ if (!mpt2sas_phy) /* this phy not on sas_host */
+ return -EINVAL;
+
+ memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlReply_t));
+ mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
+ mpi_request.Operation = hard_reset ?
+ MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
+ mpi_request.PhyNum = mpt2sas_phy->phy_id;
+
+ if ((mpt2sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
+ printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+ ioc->name, __FILE__, __LINE__, __func__);
+ return -ENXIO;
+ }
+
+ if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
+ printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
+ "(0x%04x), loginfo(0x%08x)\n", ioc->name,
+ mpt2sas_phy->phy_id,
+ le16_to_cpu(mpi_reply.IOCStatus),
+ le32_to_cpu(mpi_reply.IOCLogInfo));
+
+ return 0;
+}
+
+/**
+ * transport_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;
+ unsigned long flags;
+ dma_addr_t dma_addr_in = 0;
+ dma_addr_t dma_addr_out = 0;
+ u16 wait_state_count;
+ struct request *rsp = req->next_rq;
+
+ if (!rsp) {
+ printk(MPT2SAS_ERR_FMT "%s: the smp response space is "
+ "missing\n", ioc->name, __func__);
+ return -EINVAL;
+ }
+
+ /* do we need to support multiple segments? */
+ if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) {
+ printk(MPT2SAS_ERR_FMT "%s: multiple segments req %u %u, "
+ "rsp %u %u\n", ioc->name, __func__, req->bio->bi_vcnt,
+ req->data_len, rsp->bio->bi_vcnt, rsp->data_len);
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
+ if (ioc->ioc_reset_in_progress) {
+ spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
+ printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
+ __func__, ioc->name);
+ return -EFAULT;
+ }
+ spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
+
+ rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
+ if (rc)
+ return rc;
+
+ if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
+ printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n", ioc->name,
+ __func__);
+ rc = -EAGAIN;
+ goto out;
+ }
+ ioc->transport_cmds.status = MPT2_CMD_PENDING;
+
+ wait_state_count = 0;
+ ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
+ while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
+ if (wait_state_count++ == 10) {
+ printk(MPT2SAS_ERR_FMT
+ "%s: failed due to ioc not operational\n",
+ ioc->name, __func__);
+ rc = -EFAULT;
+ goto out;
+ }
+ ssleep(1);
+ ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
+ printk(MPT2SAS_INFO_FMT "%s: waiting for "
+ "operational state(count=%d)\n", ioc->name,
+ __func__, wait_state_count);
+ }
+ if (wait_state_count)
+ printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
+ ioc->name, __func__);
+
+ smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
+ if (!smid) {
+ printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
+ ioc->name, __func__);
+ rc = -EAGAIN;
+ goto out;
+ }
+
+ rc = 0;
+ mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
+ ioc->transport_cmds.smid = smid;
+
+ memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
+ mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
+ mpi_request->PhysicalPort = 0xFF;
+ *((u64 *)&mpi_request->SASAddress) = (rphy) ?
+ cpu_to_le64(rphy->identify.sas_address) :
+ cpu_to_le64(ioc->sas_hba.sas_address);
+ mpi_request->RequestDataLength = cpu_to_le16(req->data_len - 4);
+ psge = &mpi_request->SGL;
+
+ /* WRITE sgel first */
+ sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
+ MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
+ sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
+ dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
+ req->data_len, PCI_DMA_BIDIRECTIONAL);
+ if (!dma_addr_out) {
+ mpt2sas_base_free_smid(ioc, le16_to_cpu(smid));
+ goto unmap;
+ }
+
+ ioc->base_add_sg_single(psge, sgl_flags | (req->data_len - 4),
+ dma_addr_out);
+
+ /* incr sgel */
+ psge += ioc->sge_size;
+
+ /* READ sgel last */
+ sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
+ MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
+ MPI2_SGE_FLAGS_END_OF_LIST);
+ sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
+ dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio),
+ rsp->data_len, PCI_DMA_BIDIRECTIONAL);
+ if (!dma_addr_in) {
+ mpt2sas_base_free_smid(ioc, le16_to_cpu(smid));
+ goto unmap;
+ }
+
+ ioc->base_add_sg_single(psge, sgl_flags | (rsp->data_len + 4),
+ dma_addr_in);
+
+ dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
+ "sending smp request\n", ioc->name, __func__));
+
+ mpt2sas_base_put_smid_default(ioc, smid, 0 /* VF_ID */);
+ timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
+ 10*HZ);
+
+ if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
+ printk(MPT2SAS_ERR_FMT "%s : timeout\n",
+ __func__, ioc->name);
+ _debug_dump_mf(mpi_request,
+ sizeof(Mpi2SmpPassthroughRequest_t)/4);
+ if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
+ issue_reset = 1;
+ goto issue_host_reset;
+ }
+
+ dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
+ "complete\n", ioc->name, __func__));
+
+ if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
+
+ mpi_reply = ioc->transport_cmds.reply;
+
+ dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
+ "%s - reply data transfer size(%d)\n",
+ ioc->name, __func__,
+ le16_to_cpu(mpi_reply->ResponseDataLength)));
+
+ memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
+ req->sense_len = sizeof(*mpi_reply);
+ req->data_len = 0;
+ rsp->data_len -= mpi_reply->ResponseDataLength;
+
+ } else {
+ dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
+ "%s - no reply\n", ioc->name, __func__));
+ rc = -ENXIO;
+ }
+
+ issue_host_reset:
+ if (issue_reset) {
+ mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
+ FORCE_BIG_HAMMER);
+ rc = -ETIMEDOUT;
+ }
+
+ unmap:
+ if (dma_addr_out)
+ pci_unmap_single(ioc->pdev, dma_addr_out, req->data_len,
+ PCI_DMA_BIDIRECTIONAL);
+ if (dma_addr_in)
+ pci_unmap_single(ioc->pdev, dma_addr_in, rsp->data_len,
+ PCI_DMA_BIDIRECTIONAL);
+
+ out:
+ ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
+ mutex_unlock(&ioc->transport_cmds.mutex);
+ return rc;
+}
+
+struct sas_function_template mpt2sas_transport_functions = {
+ .get_linkerrors = transport_get_linkerrors,
+ .get_enclosure_identifier = transport_get_enclosure_identifier,
+ .get_bay_identifier = transport_get_bay_identifier,
+ .phy_reset = transport_phy_reset,
+ .smp_handler = transport_smp_handler,
+};
+
+struct scsi_transport_template *mpt2sas_transport_template;