1 files changed, 241 insertions, 25 deletions

diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
index efabea1a3ce4..c7ec3f174782 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
@@ -52,6 +52,7 @@
 #include <linux/delay.h>
 #include <linux/pci.h>
 #include <linux/interrupt.h>
+#include <linux/raid_class.h>
 
 #include "mpt2sas_base.h"
 
@@ -133,6 +134,9 @@ struct fw_event_work {
         void                    *event_data;
 };
 
+/* raid transport support */
+static struct raid_template *mpt2sas_raid_template;
+
 /**
  * struct _scsi_io_transfer - scsi io transfer
  * @handle: sas device handle (assigned by firmware)
@@ -1305,7 +1309,6 @@ _scsih_slave_alloc(struct scsi_device *sdev)
         struct MPT2SAS_DEVICE *sas_device_priv_data;
         struct scsi_target *starget;
         struct _raid_device *raid_device;
-        struct _sas_device *sas_device;
         unsigned long flags;
 
         sas_device_priv_data = kzalloc(sizeof(struct scsi_device), GFP_KERNEL);
@@ -1332,21 +1335,8 @@ _scsih_slave_alloc(struct scsi_device *sdev)
                 if (raid_device)
                         raid_device->sdev = sdev; /* raid is single lun */
                 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
-        } else {
-                /* set TLR bit for SSP devices */
-                if (!(ioc->facts.IOCCapabilities &
-                     MPI2_IOCFACTS_CAPABILITY_TLR))
-                        goto out;
-                spin_lock_irqsave(&ioc->sas_device_lock, flags);
-                sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
-                   sas_device_priv_data->sas_target->sas_address);
-                spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
-                if (sas_device && sas_device->device_info &
-                    MPI2_SAS_DEVICE_INFO_SSP_TARGET)
-                        sas_device_priv_data->flags |= MPT_DEVICE_TLR_ON;
         }
 
- out:
         return 0;
 }
 
@@ -1419,6 +1409,140 @@ _scsih_display_sata_capabilities(struct MPT2SAS_ADAPTER *ioc,
 }
 
 /**
+ * _scsih_is_raid - return boolean indicating device is raid volume
+ * @dev the device struct object
+ */
+static int
+_scsih_is_raid(struct device *dev)
+{
+        struct scsi_device *sdev = to_scsi_device(dev);
+
+        return (sdev->channel == RAID_CHANNEL) ? 1 : 0;
+}
+
+/**
+ * _scsih_get_resync - get raid volume resync percent complete
+ * @dev the device struct object
+ */
+static void
+_scsih_get_resync(struct device *dev)
+{
+        struct scsi_device *sdev = to_scsi_device(dev);
+        struct MPT2SAS_ADAPTER *ioc = shost_priv(sdev->host);
+        static struct _raid_device *raid_device;
+        unsigned long flags;
+        Mpi2RaidVolPage0_t vol_pg0;
+        Mpi2ConfigReply_t mpi_reply;
+        u32 volume_status_flags;
+        u8 percent_complete = 0;
+
+        spin_lock_irqsave(&ioc->raid_device_lock, flags);
+        raid_device = _scsih_raid_device_find_by_id(ioc, sdev->id,
+            sdev->channel);
+        spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
+
+        if (!raid_device)
+                goto out;
+
+        if (mpt2sas_config_get_raid_volume_pg0(ioc, &mpi_reply, &vol_pg0,
+             MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, raid_device->handle,
+             sizeof(Mpi2RaidVolPage0_t))) {
+                printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+                    ioc->name, __FILE__, __LINE__, __func__);
+                goto out;
+        }
+
+        volume_status_flags = le32_to_cpu(vol_pg0.VolumeStatusFlags);
+        if (volume_status_flags & MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS)
+                percent_complete = raid_device->percent_complete;
+ out:
+        raid_set_resync(mpt2sas_raid_template, dev, percent_complete);
+}
+
+/**
+ * _scsih_get_state - get raid volume level
+ * @dev the device struct object
+ */
+static void
+_scsih_get_state(struct device *dev)
+{
+        struct scsi_device *sdev = to_scsi_device(dev);
+        struct MPT2SAS_ADAPTER *ioc = shost_priv(sdev->host);
+        static struct _raid_device *raid_device;
+        unsigned long flags;
+        Mpi2RaidVolPage0_t vol_pg0;
+        Mpi2ConfigReply_t mpi_reply;
+        u32 volstate;
+        enum raid_state state = RAID_STATE_UNKNOWN;
+
+        spin_lock_irqsave(&ioc->raid_device_lock, flags);
+        raid_device = _scsih_raid_device_find_by_id(ioc, sdev->id,
+            sdev->channel);
+        spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
+
+        if (!raid_device)
+                goto out;
+
+        if (mpt2sas_config_get_raid_volume_pg0(ioc, &mpi_reply, &vol_pg0,
+             MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, raid_device->handle,
+             sizeof(Mpi2RaidVolPage0_t))) {
+                printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
+                    ioc->name, __FILE__, __LINE__, __func__);
+                goto out;
+        }
+
+        volstate = le32_to_cpu(vol_pg0.VolumeStatusFlags);
+        if (volstate & MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS) {
+                state = RAID_STATE_RESYNCING;
+                goto out;
+        }
+
+        switch (vol_pg0.VolumeState) {
+        case MPI2_RAID_VOL_STATE_OPTIMAL:
+        case MPI2_RAID_VOL_STATE_ONLINE:
+                state = RAID_STATE_ACTIVE;
+                break;
+        case  MPI2_RAID_VOL_STATE_DEGRADED:
+                state = RAID_STATE_DEGRADED;
+                break;
+        case MPI2_RAID_VOL_STATE_FAILED:
+        case MPI2_RAID_VOL_STATE_MISSING:
+                state = RAID_STATE_OFFLINE;
+                break;
+        }
+ out:
+        raid_set_state(mpt2sas_raid_template, dev, state);
+}
+
+/**
+ * _scsih_set_level - set raid level
+ * @sdev: scsi device struct
+ * @raid_device: raid_device object
+ */
+static void
+_scsih_set_level(struct scsi_device *sdev, struct _raid_device *raid_device)
+{
+        enum raid_level level = RAID_LEVEL_UNKNOWN;
+
+        switch (raid_device->volume_type) {
+        case MPI2_RAID_VOL_TYPE_RAID0:
+                level = RAID_LEVEL_0;
+                break;
+        case MPI2_RAID_VOL_TYPE_RAID10:
+                level = RAID_LEVEL_10;
+                break;
+        case MPI2_RAID_VOL_TYPE_RAID1E:
+                level = RAID_LEVEL_1E;
+                break;
+        case MPI2_RAID_VOL_TYPE_RAID1:
+                level = RAID_LEVEL_1;
+                break;
+        }
+
+        raid_set_level(mpt2sas_raid_template, &sdev->sdev_gendev, level);
+}
+
+/**
  * _scsih_get_volume_capabilities - volume capabilities
  * @ioc: per adapter object
  * @sas_device: the raid_device object
@@ -1479,6 +1603,32 @@ _scsih_get_volume_capabilities(struct MPT2SAS_ADAPTER *ioc,
 }
 
 /**
+ * _scsih_enable_tlr - setting TLR flags
+ * @ioc: per adapter object
+ * @sdev: scsi device struct
+ *
+ * Enabling Transaction Layer Retries for tape devices when
+ * vpd page 0x90 is present
+ *
+ */
+static void
+_scsih_enable_tlr(struct MPT2SAS_ADAPTER *ioc, struct scsi_device *sdev)
+{
+        /* only for TAPE */
+        if (sdev->type != TYPE_TAPE)
+                return;
+
+        if (!(ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR))
+                return;
+
+        sas_enable_tlr(sdev);
+        sdev_printk(KERN_INFO, sdev, "TLR %s\n",
+            sas_is_tlr_enabled(sdev) ? "Enabled" : "Disabled");
+        return;
+
+}
+
+/**
  * _scsih_slave_configure - device configure routine.
  * @sdev: scsi device struct
  *
@@ -1574,6 +1724,8 @@ _scsih_slave_configure(struct scsi_device *sdev)
                     (unsigned long long)raid_device->wwid,
                     raid_device->num_pds, ds);
                 _scsih_change_queue_depth(sdev, qdepth, SCSI_QDEPTH_DEFAULT);
+                /* raid transport support */
+                _scsih_set_level(sdev, raid_device);
                 return 0;
         }
 
@@ -1621,8 +1773,10 @@ _scsih_slave_configure(struct scsi_device *sdev)
 
         _scsih_change_queue_depth(sdev, qdepth, SCSI_QDEPTH_DEFAULT);
 
-        if (ssp_target)
+        if (ssp_target) {
                 sas_read_port_mode_page(sdev);
+                _scsih_enable_tlr(ioc, sdev);
+        }
         return 0;
 }
 
@@ -2908,8 +3062,9 @@ _scsih_qcmd(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *))
 
         } else
                 mpi_control |= MPI2_SCSIIO_CONTROL_SIMPLEQ;
-
-        if ((sas_device_priv_data->flags & MPT_DEVICE_TLR_ON))
+        /* Make sure Device is not raid volume */
+        if (!_scsih_is_raid(&scmd->device->sdev_gendev) &&
+            sas_is_tlr_enabled(scmd->device))
                 mpi_control |= MPI2_SCSIIO_CONTROL_TLR_ON;
 
         smid = mpt2sas_base_get_smid_scsiio(ioc, ioc->scsi_io_cb_idx, scmd);
@@ -3298,10 +3453,12 @@ _scsih_io_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
                     le32_to_cpu(mpi_reply->ResponseInfo) & 0xFF;
         if (!sas_device_priv_data->tlr_snoop_check) {
                 sas_device_priv_data->tlr_snoop_check++;
-                if ((sas_device_priv_data->flags & MPT_DEVICE_TLR_ON) &&
-                    response_code == MPI2_SCSITASKMGMT_RSP_INVALID_FRAME)
-                        sas_device_priv_data->flags &=
-                            ~MPT_DEVICE_TLR_ON;
+        if (!_scsih_is_raid(&scmd->device->sdev_gendev) &&
+                sas_is_tlr_enabled(scmd->device) &&
+                    response_code == MPI2_SCSITASKMGMT_RSP_INVALID_FRAME) {
+                        sas_disable_tlr(scmd->device);
+                        sdev_printk(KERN_INFO, scmd->device, "TLR disabled\n");
+                }
         }
 
         xfer_cnt = le32_to_cpu(mpi_reply->TransferCount);
@@ -5170,11 +5327,33 @@ static void
 _scsih_sas_ir_operation_status_event(struct MPT2SAS_ADAPTER *ioc,
     struct fw_event_work *fw_event)
 {
+        Mpi2EventDataIrOperationStatus_t *event_data = fw_event->event_data;
+        static struct _raid_device *raid_device;
+        unsigned long flags;
+        u16 handle;
+
 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
         if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
                 _scsih_sas_ir_operation_status_event_debug(ioc,
-                     fw_event->event_data);
+                     event_data);
 #endif
+
+        /* code added for raid transport support */
+        if (event_data->RAIDOperation == MPI2_EVENT_IR_RAIDOP_RESYNC) {
+
+                handle = le16_to_cpu(event_data->VolDevHandle);
+
+                spin_lock_irqsave(&ioc->raid_device_lock, flags);
+                raid_device = _scsih_raid_device_find_by_handle(ioc, handle);
+                spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
+
+                if (!raid_device)
+                        return;
+
+                if (event_data->RAIDOperation == MPI2_EVENT_IR_RAIDOP_RESYNC)
+                        raid_device->percent_complete =
+                            event_data->PercentComplete;
+        }
 }
 
 /**
@@ -5998,6 +6177,8 @@ _scsih_remove(struct pci_dev *pdev)
         struct _sas_port *mpt2sas_port;
         struct _sas_device *sas_device;
         struct _sas_node *expander_sibling;
+        struct _raid_device *raid_device, *next;
+        struct MPT2SAS_TARGET *sas_target_priv_data;
         struct workqueue_struct *wq;
         unsigned long flags;
 
@@ -6011,6 +6192,21 @@ _scsih_remove(struct pci_dev *pdev)
         if (wq)
                 destroy_workqueue(wq);
 
+        /* release all the volumes */
+        list_for_each_entry_safe(raid_device, next, &ioc->raid_device_list,
+            list) {
+                if (raid_device->starget) {
+                        sas_target_priv_data =
+                            raid_device->starget->hostdata;
+                        sas_target_priv_data->deleted = 1;
+                        scsi_remove_target(&raid_device->starget->dev);
+                }
+                printk(MPT2SAS_INFO_FMT "removing handle(0x%04x), wwid"
+                    "(0x%016llx)\n", ioc->name,  raid_device->handle,
+                    (unsigned long long) raid_device->wwid);
+                _scsih_raid_device_remove(ioc, raid_device);
+        }
+
         /* free ports attached to the sas_host */
  retry_again:
         list_for_each_entry(mpt2sas_port,
@@ -6373,6 +6569,13 @@ static struct pci_driver scsih_driver = {
 #endif
 };
 
+/* raid transport support */
+static struct raid_function_template mpt2sas_raid_functions = {
+        .cookie         = &scsih_driver_template,
+        .is_raid        = _scsih_is_raid,
+        .get_resync     = _scsih_get_resync,
+        .get_state      = _scsih_get_state,
+};
 
 /**
  * _scsih_init - main entry point for this driver.
@@ -6392,6 +6595,12 @@ _scsih_init(void)
             sas_attach_transport(&mpt2sas_transport_functions);
         if (!mpt2sas_transport_template)
                 return -ENODEV;
+        /* raid transport support */
+        mpt2sas_raid_template = raid_class_attach(&mpt2sas_raid_functions);
+        if (!mpt2sas_raid_template) {
+                sas_release_transport(mpt2sas_transport_template);
+                return -ENODEV;
+        }
 
         mpt2sas_base_initialize_callback_handler();
 
@@ -6426,8 +6635,11 @@ _scsih_init(void)
         mpt2sas_ctl_init();
 
         error = pci_register_driver(&scsih_driver);
-        if (error)
+        if (error) {
+                /* raid transport support */
+                raid_class_release(mpt2sas_raid_template);
                 sas_release_transport(mpt2sas_transport_template);
+        }
 
         return error;
 }
@@ -6445,7 +6657,8 @@ _scsih_exit(void)
 
         pci_unregister_driver(&scsih_driver);
 
-        sas_release_transport(mpt2sas_transport_template);
+        mpt2sas_ctl_exit();
+
         mpt2sas_base_release_callback_handler(scsi_io_cb_idx);
         mpt2sas_base_release_callback_handler(tm_cb_idx);
         mpt2sas_base_release_callback_handler(base_cb_idx);
@@ -6457,7 +6670,10 @@ _scsih_exit(void)
         mpt2sas_base_release_callback_handler(tm_tr_cb_idx);
         mpt2sas_base_release_callback_handler(tm_sas_control_cb_idx);
 
-        mpt2sas_ctl_exit();
+        /* raid transport support */
+        raid_class_release(mpt2sas_raid_template);
+        sas_release_transport(mpt2sas_transport_template);
+
 }
 
 module_init(_scsih_init);