From: "Moore, Eric" RAID event support. This will hot add and remove raid volumes when managment application creates and deletes the volumes. The driver is basically responding to firmware asyn events, and reporting the changes to the above layers. Signed-off-by: Eric Moore Acked-by: Christoph Hellwig Signed-off-by: Andrew Morton --- drivers/message/fusion/mptsas.c | 198 ++++++++++++++++++++++++++---- 1 files changed, 173 insertions(+), 25 deletions(-) diff -puN drivers/message/fusion/mptsas.c~fusion-add-support-for-raid-hot-add-del-support drivers/message/fusion/mptsas.c --- 25/drivers/message/fusion/mptsas.c~fusion-add-support-for-raid-hot-add-del-support Fri Jan 27 16:03:30 2006 +++ 25-akpm/drivers/message/fusion/mptsas.c Fri Jan 27 16:03:30 2006 @@ -89,6 +89,8 @@ static int mptsasMgmtCtx = -1; enum mptsas_hotplug_action { MPTSAS_ADD_DEVICE, MPTSAS_DEL_DEVICE, + MPTSAS_ADD_RAID, + MPTSAS_DEL_RAID, }; struct mptsas_hotplug_event { @@ -114,6 +116,7 @@ struct mptsas_hotplug_event { struct mptsas_devinfo { u16 handle; /* unique id to address this device */ + u16 handle_parent; /* unique id to address parent device */ u8 phy_id; /* phy number of parent device */ u8 port_id; /* sas physical port this device is assoc'd with */ @@ -714,6 +717,7 @@ mptsas_sas_device_pg0(MPT_ADAPTER *ioc, mptsas_print_device_pg0(buffer); device_info->handle = le16_to_cpu(buffer->DevHandle); + device_info->handle_parent = le16_to_cpu(buffer->ParentDevHandle); device_info->phy_id = buffer->PhyNum; device_info->port_id = buffer->PhysicalPort; device_info->id = buffer->TargetID; @@ -863,6 +867,26 @@ mptsas_sas_expander_pg1(MPT_ADAPTER *ioc return error; } +/* + * Returns true if there is a scsi end device + */ +static inline int +mptsas_is_end_device(struct mptsas_devinfo * attached) +{ + if ((attached->handle) && + (attached->device_info & + MPI_SAS_DEVICE_INFO_END_DEVICE) && + ((attached->device_info & + MPI_SAS_DEVICE_INFO_SSP_TARGET) | + (attached->device_info & + MPI_SAS_DEVICE_INFO_STP_TARGET) | + (attached->device_info & + MPI_SAS_DEVICE_INFO_SATA_DEVICE))) + return 1; + else + return 0; +} + static void mptsas_parse_device_info(struct sas_identify *identify, struct mptsas_devinfo *device_info) @@ -1227,7 +1251,7 @@ mptsas_find_phyinfo_by_parent(MPT_ADAPTE } static struct mptsas_phyinfo * -mptsas_find_phyinfo_by_handle(MPT_ADAPTER *ioc, u16 handle) +mptsas_find_phyinfo_by_target(MPT_ADAPTER *ioc, u32 id) { struct mptsas_portinfo *port_info; struct mptsas_phyinfo *phy_info = NULL; @@ -1239,12 +1263,12 @@ mptsas_find_phyinfo_by_handle(MPT_ADAPTE */ mutex_lock(&ioc->sas_topology_mutex); list_for_each_entry(port_info, &ioc->sas_topology, list) { - for (i = 0; i < port_info->num_phys; i++) { - if (port_info->phy_info[i].attached.handle == handle) { - phy_info = &port_info->phy_info[i]; - break; - } - } + for (i = 0; i < port_info->num_phys; i++) + if (mptsas_is_end_device(&port_info->phy_info[i].attached)) + if (port_info->phy_info[i].attached.id == id) { + phy_info = &port_info->phy_info[i]; + break; + } } mutex_unlock(&ioc->sas_topology_mutex); @@ -1258,36 +1282,58 @@ mptsas_hotplug_work(void *arg) MPT_ADAPTER *ioc = ev->ioc; struct mptsas_phyinfo *phy_info; struct sas_rphy *rphy; + struct scsi_device *sdev; char *ds = NULL; - - if (ev->device_info & MPI_SAS_DEVICE_INFO_SSP_TARGET) - ds = "ssp"; - if (ev->device_info & MPI_SAS_DEVICE_INFO_STP_TARGET) - ds = "stp"; - if (ev->device_info & MPI_SAS_DEVICE_INFO_SATA_DEVICE) - ds = "sata"; + struct mptsas_devinfo sas_device; switch (ev->event_type) { case MPTSAS_DEL_DEVICE: - printk(MYIOC_s_INFO_FMT - "removing %s device, channel %d, id %d, phy %d\n", - ioc->name, ds, ev->channel, ev->id, ev->phy_id); - phy_info = mptsas_find_phyinfo_by_handle(ioc, ev->handle); + phy_info = mptsas_find_phyinfo_by_target(ioc, ev->id); if (!phy_info) { printk("mptsas: remove event for non-existant PHY.\n"); break; } + if (phy_info->attached.device_info & MPI_SAS_DEVICE_INFO_SSP_TARGET) + ds = "ssp"; + if (phy_info->attached.device_info & MPI_SAS_DEVICE_INFO_STP_TARGET) + ds = "stp"; + if (phy_info->attached.device_info & MPI_SAS_DEVICE_INFO_SATA_DEVICE) + ds = "sata"; + + printk(MYIOC_s_INFO_FMT + "removing %s device, channel %d, id %d, phy %d\n", + ioc->name, ds, ev->channel, ev->id, phy_info->phy_id); + if (phy_info->rphy) { sas_rphy_delete(phy_info->rphy); phy_info->rphy = NULL; } break; case MPTSAS_ADD_DEVICE: - printk(MYIOC_s_INFO_FMT - "attaching %s device, channel %d, id %d, phy %d\n", - ioc->name, ds, ev->channel, ev->id, ev->phy_id); + + /* + * When there is no sas address, + * RAID volumes are being deleted, + * and hidden phy disk are being added. + * We don't know the SAS data yet, + * so lookup sas device page to get + * pertaining info + */ + if (!ev->sas_address) { + if (mptsas_sas_device_pg0(ioc, + &sas_device, ev->id, + (MPI_SAS_DEVICE_PGAD_FORM_BUS_TARGET_ID << + MPI_SAS_DEVICE_PGAD_FORM_SHIFT))) + break; + ev->handle = sas_device.handle; + ev->parent_handle = sas_device.handle_parent; + ev->channel = sas_device.channel; + ev->phy_id = sas_device.phy_id; + ev->sas_address = sas_device.sas_address; + ev->device_info = sas_device.device_info; + } phy_info = mptsas_find_phyinfo_by_parent(ioc, ev->parent_handle, ev->phy_id); @@ -1310,10 +1356,23 @@ mptsas_hotplug_work(void *arg) phy_info->attached.sas_address = ev->sas_address; phy_info->attached.device_info = ev->device_info; + if (phy_info->attached.device_info & MPI_SAS_DEVICE_INFO_SSP_TARGET) + ds = "ssp"; + if (phy_info->attached.device_info & MPI_SAS_DEVICE_INFO_STP_TARGET) + ds = "stp"; + if (phy_info->attached.device_info & MPI_SAS_DEVICE_INFO_SATA_DEVICE) + ds = "sata"; + + printk(MYIOC_s_INFO_FMT + "attaching %s device, channel %d, id %d, phy %d\n", + ioc->name, ds, ev->channel, ev->id, ev->phy_id); + + rphy = sas_rphy_alloc(phy_info->phy); if (!rphy) break; /* non-fatal: an rphy can be added later */ + rphy->scsi_target_id = phy_info->attached.id; mptsas_parse_device_info(&rphy->identify, &phy_info->attached); if (sas_rphy_add(rphy)) { sas_rphy_free(rphy); @@ -1322,6 +1381,40 @@ mptsas_hotplug_work(void *arg) phy_info->rphy = rphy; break; + case MPTSAS_ADD_RAID: + sdev = scsi_device_lookup( + ioc->sh, + ioc->num_ports, + ev->id, + 0); + if (sdev) { + scsi_device_put(sdev); + break; + } + printk(MYIOC_s_INFO_FMT + "attaching device, channel %d, id %d\n", + ioc->name, ioc->num_ports, ev->id); + scsi_add_device(ioc->sh, + ioc->num_ports, + ev->id, + 0); + mpt_findImVolumes(ioc); + break; + case MPTSAS_DEL_RAID: + sdev = scsi_device_lookup( + ioc->sh, + ioc->num_ports, + ev->id, + 0); + if (!sdev) + break; + printk(MYIOC_s_INFO_FMT + "removing device, channel %d, id %d\n", + ioc->name, ioc->num_ports, ev->id); + scsi_remove_device(sdev); + scsi_device_put(sdev); + mpt_findImVolumes(ioc); + break; } kfree(ev); @@ -1372,23 +1465,78 @@ mptscsih_send_sas_event(MPT_ADAPTER *ioc schedule_work(&ev->work); } +static void +mptscsih_send_raid_event(MPT_ADAPTER *ioc, + EVENT_DATA_RAID *raid_event_data) +{ + struct mptsas_hotplug_event *ev; + RAID_VOL0_STATUS * volumeStatus; + + if (ioc->bus_type != SAS) + return; + + ev = kmalloc(sizeof(*ev), GFP_ATOMIC); + if (!ev) { + printk(KERN_WARNING "mptsas: lost hotplug event\n"); + return; + } + + memset(ev,0,sizeof(struct mptsas_hotplug_event)); + INIT_WORK(&ev->work, mptsas_hotplug_work, ev); + ev->ioc = ioc; + ev->id = raid_event_data->VolumeID; + + switch (raid_event_data->ReasonCode) { + case MPI_EVENT_RAID_RC_PHYSDISK_DELETED: + ev->event_type = MPTSAS_ADD_DEVICE; + break; + case MPI_EVENT_RAID_RC_PHYSDISK_CREATED: + ev->event_type = MPTSAS_DEL_DEVICE; + break; + case MPI_EVENT_RAID_RC_VOLUME_DELETED: + ev->event_type = MPTSAS_DEL_RAID; + break; + case MPI_EVENT_RAID_RC_VOLUME_CREATED: + ev->event_type = MPTSAS_ADD_RAID; + break; + case MPI_EVENT_RAID_RC_VOLUME_STATUS_CHANGED: + volumeStatus = (RAID_VOL0_STATUS *) & + raid_event_data->SettingsStatus; + ev->event_type = (volumeStatus->State == + MPI_RAIDVOL0_STATUS_STATE_FAILED) ? + MPTSAS_DEL_RAID : MPTSAS_ADD_RAID; + break; + default: + break; + } + schedule_work(&ev->work); +} + static int mptsas_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *reply) { + int rc=1; u8 event = le32_to_cpu(reply->Event) & 0xFF; if (!ioc->sh) - return 1; + goto out; switch (event) { case MPI_EVENT_SAS_DEVICE_STATUS_CHANGE: mptscsih_send_sas_event(ioc, (EVENT_DATA_SAS_DEVICE_STATUS_CHANGE *)reply->Data); - return 1; /* currently means nothing really */ - + break; + case MPI_EVENT_INTEGRATED_RAID: + mptscsih_send_raid_event(ioc, + (EVENT_DATA_RAID *)reply->Data); + break; default: - return mptscsih_event_process(ioc, reply); + rc = mptscsih_event_process(ioc, reply); + break; } + out: + + return rc; } static int _