From f7c95ef02b564d9984c0655c9659791b1dd5d7ad Mon Sep 17 00:00:00 2001 From: "Kashyap, Desai" Date: Wed, 16 Dec 2009 18:54:42 +0530 Subject: [SCSI] mpt2sas: Added raid transport support Adding support for raid transport layer. This will provide sysfs attributes containing raid level, state, and resync rate. MPT2SAS module will select RAID_ATTRS. Signed-off-by: Kashyap Desai Reviewed-by: Eric Moore Signed-off-by: James Bottomley diff --git a/drivers/scsi/mpt2sas/Kconfig b/drivers/scsi/mpt2sas/Kconfig index 70c4c24..ba8e128 100644 --- a/drivers/scsi/mpt2sas/Kconfig +++ b/drivers/scsi/mpt2sas/Kconfig @@ -44,6 +44,7 @@ config SCSI_MPT2SAS tristate "LSI MPT Fusion SAS 2.0 Device Driver" depends on PCI && SCSI select SCSI_SAS_ATTRS + select RAID_ATTRS ---help--- This driver supports PCI-Express SAS 6Gb/s Host Adapters. diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.h b/drivers/scsi/mpt2sas/mpt2sas_base.h index 12fa18b..014318f 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_base.h +++ b/drivers/scsi/mpt2sas/mpt2sas_base.h @@ -323,6 +323,7 @@ struct _sas_device { * @device_info: bitfield provides detailed info about the hidden components * @num_pds: number of hidden raid components * @responding: used in _scsih_raid_device_mark_responding + * @percent_complete: resync percent complete */ struct _raid_device { struct list_head list; @@ -336,6 +337,7 @@ struct _raid_device { u32 device_info; u8 num_pds; u8 responding; + u8 percent_complete; }; /** diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c index cd55176..ca984cb 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c +++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c @@ -52,6 +52,7 @@ #include #include #include +#include #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) @@ -1419,6 +1423,140 @@ _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 @@ -1574,6 +1712,8 @@ _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; } @@ -5170,11 +5310,33 @@ 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; + } } /** @@ -6390,6 +6552,13 @@ 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. @@ -6409,6 +6578,12 @@ _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(); @@ -6443,8 +6618,11 @@ _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; } @@ -6462,7 +6640,8 @@ _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); @@ -6474,7 +6653,10 @@ _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); diff --git a/include/linux/raid_class.h b/include/linux/raid_class.h index 6b537f1..31e1ff6 100644 --- a/include/linux/raid_class.h +++ b/include/linux/raid_class.h @@ -32,6 +32,7 @@ enum raid_level { RAID_LEVEL_0, RAID_LEVEL_1, RAID_LEVEL_10, + RAID_LEVEL_1E, RAID_LEVEL_3, RAID_LEVEL_4, RAID_LEVEL_5, -- cgit v0.10.2