[SCSI] fusion: add support for raid hot add/del support
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 <Eric.Moore@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Moore, Eric
James Bottomley
Родитель
d99ca4180f
Коммит
c73787eecd
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@ -89,6 +89,8 @@ static int mptsasMgmtCtx = -1;
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enum mptsas_hotplug_action {
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MPTSAS_ADD_DEVICE,
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MPTSAS_DEL_DEVICE,
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MPTSAS_ADD_RAID,
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MPTSAS_DEL_RAID,
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};
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struct mptsas_hotplug_event {
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@ -114,6 +116,7 @@ struct mptsas_hotplug_event {
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struct mptsas_devinfo {
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u16 handle; /* unique id to address this device */
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u16 handle_parent; /* unique id to address parent device */
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u8 phy_id; /* phy number of parent device */
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u8 port_id; /* sas physical port this device
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is assoc'd with */
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@ -714,6 +717,7 @@ mptsas_sas_device_pg0(MPT_ADAPTER *ioc, struct mptsas_devinfo *device_info,
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mptsas_print_device_pg0(buffer);
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device_info->handle = le16_to_cpu(buffer->DevHandle);
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device_info->handle_parent = le16_to_cpu(buffer->ParentDevHandle);
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device_info->phy_id = buffer->PhyNum;
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device_info->port_id = buffer->PhysicalPort;
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device_info->id = buffer->TargetID;
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@ -863,6 +867,26 @@ mptsas_sas_expander_pg1(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info,
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return error;
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}
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/*
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* Returns true if there is a scsi end device
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*/
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static inline int
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mptsas_is_end_device(struct mptsas_devinfo * attached)
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{
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if ((attached->handle) &&
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(attached->device_info &
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MPI_SAS_DEVICE_INFO_END_DEVICE) &&
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((attached->device_info &
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MPI_SAS_DEVICE_INFO_SSP_TARGET) |
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(attached->device_info &
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MPI_SAS_DEVICE_INFO_STP_TARGET) |
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(attached->device_info &
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MPI_SAS_DEVICE_INFO_SATA_DEVICE)))
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return 1;
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else
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return 0;
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}
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static void
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mptsas_parse_device_info(struct sas_identify *identify,
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struct mptsas_devinfo *device_info)
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@ -1227,7 +1251,7 @@ mptsas_find_phyinfo_by_parent(MPT_ADAPTER *ioc, u16 parent_handle, u8 phy_id)
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}
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static struct mptsas_phyinfo *
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mptsas_find_phyinfo_by_handle(MPT_ADAPTER *ioc, u16 handle)
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mptsas_find_phyinfo_by_target(MPT_ADAPTER *ioc, u32 id)
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{
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struct mptsas_portinfo *port_info;
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struct mptsas_phyinfo *phy_info = NULL;
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@ -1239,12 +1263,12 @@ mptsas_find_phyinfo_by_handle(MPT_ADAPTER *ioc, u16 handle)
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*/
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mutex_lock(&ioc->sas_topology_mutex);
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list_for_each_entry(port_info, &ioc->sas_topology, list) {
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for (i = 0; i < port_info->num_phys; i++) {
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if (port_info->phy_info[i].attached.handle == handle) {
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phy_info = &port_info->phy_info[i];
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break;
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}
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}
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for (i = 0; i < port_info->num_phys; i++)
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if (mptsas_is_end_device(&port_info->phy_info[i].attached))
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if (port_info->phy_info[i].attached.id == id) {
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phy_info = &port_info->phy_info[i];
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break;
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}
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}
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mutex_unlock(&ioc->sas_topology_mutex);
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@ -1258,36 +1282,58 @@ mptsas_hotplug_work(void *arg)
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MPT_ADAPTER *ioc = ev->ioc;
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struct mptsas_phyinfo *phy_info;
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struct sas_rphy *rphy;
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struct scsi_device *sdev;
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char *ds = NULL;
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if (ev->device_info & MPI_SAS_DEVICE_INFO_SSP_TARGET)
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ds = "ssp";
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if (ev->device_info & MPI_SAS_DEVICE_INFO_STP_TARGET)
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ds = "stp";
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if (ev->device_info & MPI_SAS_DEVICE_INFO_SATA_DEVICE)
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ds = "sata";
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struct mptsas_devinfo sas_device;
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switch (ev->event_type) {
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case MPTSAS_DEL_DEVICE:
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printk(MYIOC_s_INFO_FMT
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"removing %s device, channel %d, id %d, phy %d\n",
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ioc->name, ds, ev->channel, ev->id, ev->phy_id);
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phy_info = mptsas_find_phyinfo_by_handle(ioc, ev->handle);
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phy_info = mptsas_find_phyinfo_by_target(ioc, ev->id);
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if (!phy_info) {
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printk("mptsas: remove event for non-existant PHY.\n");
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break;
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}
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if (phy_info->attached.device_info & MPI_SAS_DEVICE_INFO_SSP_TARGET)
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ds = "ssp";
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if (phy_info->attached.device_info & MPI_SAS_DEVICE_INFO_STP_TARGET)
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ds = "stp";
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if (phy_info->attached.device_info & MPI_SAS_DEVICE_INFO_SATA_DEVICE)
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ds = "sata";
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printk(MYIOC_s_INFO_FMT
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"removing %s device, channel %d, id %d, phy %d\n",
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ioc->name, ds, ev->channel, ev->id, phy_info->phy_id);
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if (phy_info->rphy) {
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sas_rphy_delete(phy_info->rphy);
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phy_info->rphy = NULL;
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}
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break;
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case MPTSAS_ADD_DEVICE:
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printk(MYIOC_s_INFO_FMT
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"attaching %s device, channel %d, id %d, phy %d\n",
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ioc->name, ds, ev->channel, ev->id, ev->phy_id);
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/*
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* When there is no sas address,
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* RAID volumes are being deleted,
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* and hidden phy disk are being added.
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* We don't know the SAS data yet,
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* so lookup sas device page to get
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* pertaining info
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*/
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if (!ev->sas_address) {
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if (mptsas_sas_device_pg0(ioc,
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&sas_device, ev->id,
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(MPI_SAS_DEVICE_PGAD_FORM_BUS_TARGET_ID <<
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MPI_SAS_DEVICE_PGAD_FORM_SHIFT)))
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break;
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ev->handle = sas_device.handle;
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ev->parent_handle = sas_device.handle_parent;
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ev->channel = sas_device.channel;
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ev->phy_id = sas_device.phy_id;
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ev->sas_address = sas_device.sas_address;
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ev->device_info = sas_device.device_info;
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}
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phy_info = mptsas_find_phyinfo_by_parent(ioc,
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ev->parent_handle, ev->phy_id);
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@ -1310,10 +1356,23 @@ mptsas_hotplug_work(void *arg)
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phy_info->attached.sas_address = ev->sas_address;
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phy_info->attached.device_info = ev->device_info;
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if (phy_info->attached.device_info & MPI_SAS_DEVICE_INFO_SSP_TARGET)
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ds = "ssp";
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if (phy_info->attached.device_info & MPI_SAS_DEVICE_INFO_STP_TARGET)
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ds = "stp";
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if (phy_info->attached.device_info & MPI_SAS_DEVICE_INFO_SATA_DEVICE)
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ds = "sata";
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printk(MYIOC_s_INFO_FMT
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"attaching %s device, channel %d, id %d, phy %d\n",
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ioc->name, ds, ev->channel, ev->id, ev->phy_id);
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rphy = sas_rphy_alloc(phy_info->phy);
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if (!rphy)
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break; /* non-fatal: an rphy can be added later */
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rphy->scsi_target_id = phy_info->attached.id;
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mptsas_parse_device_info(&rphy->identify, &phy_info->attached);
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if (sas_rphy_add(rphy)) {
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sas_rphy_free(rphy);
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@ -1322,6 +1381,40 @@ mptsas_hotplug_work(void *arg)
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phy_info->rphy = rphy;
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break;
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case MPTSAS_ADD_RAID:
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sdev = scsi_device_lookup(
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ioc->sh,
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ioc->num_ports,
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ev->id,
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0);
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if (sdev) {
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scsi_device_put(sdev);
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break;
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}
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printk(MYIOC_s_INFO_FMT
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"attaching device, channel %d, id %d\n",
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ioc->name, ioc->num_ports, ev->id);
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scsi_add_device(ioc->sh,
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ioc->num_ports,
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ev->id,
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0);
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mpt_findImVolumes(ioc);
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break;
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case MPTSAS_DEL_RAID:
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sdev = scsi_device_lookup(
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ioc->sh,
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ioc->num_ports,
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ev->id,
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0);
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if (!sdev)
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break;
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printk(MYIOC_s_INFO_FMT
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"removing device, channel %d, id %d\n",
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ioc->name, ioc->num_ports, ev->id);
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scsi_remove_device(sdev);
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scsi_device_put(sdev);
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mpt_findImVolumes(ioc);
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break;
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}
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kfree(ev);
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@ -1372,23 +1465,78 @@ mptscsih_send_sas_event(MPT_ADAPTER *ioc,
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schedule_work(&ev->work);
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}
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static void
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mptscsih_send_raid_event(MPT_ADAPTER *ioc,
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EVENT_DATA_RAID *raid_event_data)
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{
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struct mptsas_hotplug_event *ev;
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RAID_VOL0_STATUS * volumeStatus;
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if (ioc->bus_type != SAS)
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return;
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ev = kmalloc(sizeof(*ev), GFP_ATOMIC);
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if (!ev) {
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printk(KERN_WARNING "mptsas: lost hotplug event\n");
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return;
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}
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memset(ev,0,sizeof(struct mptsas_hotplug_event));
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INIT_WORK(&ev->work, mptsas_hotplug_work, ev);
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ev->ioc = ioc;
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ev->id = raid_event_data->VolumeID;
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switch (raid_event_data->ReasonCode) {
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case MPI_EVENT_RAID_RC_PHYSDISK_DELETED:
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ev->event_type = MPTSAS_ADD_DEVICE;
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break;
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case MPI_EVENT_RAID_RC_PHYSDISK_CREATED:
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ev->event_type = MPTSAS_DEL_DEVICE;
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break;
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case MPI_EVENT_RAID_RC_VOLUME_DELETED:
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ev->event_type = MPTSAS_DEL_RAID;
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break;
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case MPI_EVENT_RAID_RC_VOLUME_CREATED:
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ev->event_type = MPTSAS_ADD_RAID;
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break;
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case MPI_EVENT_RAID_RC_VOLUME_STATUS_CHANGED:
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volumeStatus = (RAID_VOL0_STATUS *) &
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raid_event_data->SettingsStatus;
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ev->event_type = (volumeStatus->State ==
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MPI_RAIDVOL0_STATUS_STATE_FAILED) ?
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MPTSAS_DEL_RAID : MPTSAS_ADD_RAID;
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break;
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default:
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break;
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}
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schedule_work(&ev->work);
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}
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static int
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mptsas_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *reply)
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{
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int rc=1;
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u8 event = le32_to_cpu(reply->Event) & 0xFF;
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if (!ioc->sh)
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return 1;
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goto out;
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switch (event) {
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case MPI_EVENT_SAS_DEVICE_STATUS_CHANGE:
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mptscsih_send_sas_event(ioc,
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(EVENT_DATA_SAS_DEVICE_STATUS_CHANGE *)reply->Data);
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return 1; /* currently means nothing really */
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break;
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case MPI_EVENT_INTEGRATED_RAID:
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mptscsih_send_raid_event(ioc,
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(EVENT_DATA_RAID *)reply->Data);
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break;
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default:
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return mptscsih_event_process(ioc, reply);
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rc = mptscsih_event_process(ioc, reply);
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break;
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}
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out:
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return rc;
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}
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static int
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