mirror of https://gitee.com/openkylin/linux.git
[SCSI] pmcraid: support SMI-S object model of storage pool
PMC-Sierra mgmt application uses SMI-S model. According to SMI-S, the object model exposed by the SMI-S provider should show an StoragePool which contains member disks of a RAID Virtual disk and StorageVolume based on the StoragePool. But according to SMI-S, there is a possibility where StoragePool is created but StorageVolume is not yet created. To satisfy this scenario, we are trying a hidden RAID Virtual disk. The hidden RAID virtual disk will not be exposed to OS. Once a StorageVolume is created for this RAID virtual disk it is exposed. Signed-off-by: Anil Ravindranath<anil_ravindranath@pmc-sierra.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Anil Ravindranath
James Bottomley
parent
48de68a40a
commit
729c845666
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@ -1,7 +1,8 @@
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/*
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* pmcraid.c -- driver for PMC Sierra MaxRAID controller adapters
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*
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* Written By: PMC Sierra Corporation
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* Written By: Anil Ravindranath<anil_ravindranath@pmc-sierra.com>
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* PMC-Sierra Inc
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*
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* Copyright (C) 2008, 2009 PMC Sierra Inc
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*
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@ -79,7 +80,7 @@ DECLARE_BITMAP(pmcraid_minor, PMCRAID_MAX_ADAPTERS);
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/*
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* Module parameters
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*/
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MODULE_AUTHOR("PMC Sierra Corporation, anil_ravindranath@pmc-sierra.com");
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MODULE_AUTHOR("Anil Ravindranath<anil_ravindranath@pmc-sierra.com>");
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MODULE_DESCRIPTION("PMC Sierra MaxRAID Controller Driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(PMCRAID_DRIVER_VERSION);
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@ -162,10 +163,10 @@ static int pmcraid_slave_alloc(struct scsi_device *scsi_dev)
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spin_lock_irqsave(&pinstance->resource_lock, lock_flags);
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list_for_each_entry(temp, &pinstance->used_res_q, queue) {
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/* do not expose VSETs with order-ids >= 240 */
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/* do not expose VSETs with order-ids > MAX_VSET_TARGETS */
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if (RES_IS_VSET(temp->cfg_entry)) {
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target = temp->cfg_entry.unique_flags1;
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if (target >= PMCRAID_MAX_VSET_TARGETS)
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if (target > PMCRAID_MAX_VSET_TARGETS)
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continue;
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bus = PMCRAID_VSET_BUS_ID;
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lun = 0;
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@ -1210,7 +1211,7 @@ static int pmcraid_expose_resource(struct pmcraid_config_table_entry *cfgte)
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int retval = 0;
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if (cfgte->resource_type == RES_TYPE_VSET)
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retval = ((cfgte->unique_flags1 & 0xFF) < 0xFE);
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retval = ((cfgte->unique_flags1 & 0x80) == 0);
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else if (cfgte->resource_type == RES_TYPE_GSCSI)
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retval = (RES_BUS(cfgte->resource_address) !=
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PMCRAID_VIRTUAL_ENCL_BUS_ID);
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@ -1361,6 +1362,7 @@ static int pmcraid_notify_aen(struct pmcraid_instance *pinstance, u8 type)
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* Return value:
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* none
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*/
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static void pmcraid_handle_config_change(struct pmcraid_instance *pinstance)
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{
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struct pmcraid_config_table_entry *cfg_entry;
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@ -1368,9 +1370,10 @@ static void pmcraid_handle_config_change(struct pmcraid_instance *pinstance)
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struct pmcraid_cmd *cmd;
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struct pmcraid_cmd *cfgcmd;
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struct pmcraid_resource_entry *res = NULL;
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u32 new_entry = 1;
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unsigned long lock_flags;
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unsigned long host_lock_flags;
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u32 new_entry = 1;
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u32 hidden_entry = 0;
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int rc;
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ccn_hcam = (struct pmcraid_hcam_ccn *)pinstance->ccn.hcam;
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@ -1406,9 +1409,15 @@ static void pmcraid_handle_config_change(struct pmcraid_instance *pinstance)
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}
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/* If this resource is not going to be added to mid-layer, just notify
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* applications and return
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* applications and return. If this notification is about hiding a VSET
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* resource, check if it was exposed already.
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*/
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if (!pmcraid_expose_resource(cfg_entry))
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if (pinstance->ccn.hcam->notification_type ==
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NOTIFICATION_TYPE_ENTRY_CHANGED &&
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cfg_entry->resource_type == RES_TYPE_VSET &&
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cfg_entry->unique_flags1 & 0x80) {
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hidden_entry = 1;
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} else if (!pmcraid_expose_resource(cfg_entry))
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goto out_notify_apps;
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spin_lock_irqsave(&pinstance->resource_lock, lock_flags);
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@ -1424,6 +1433,12 @@ static void pmcraid_handle_config_change(struct pmcraid_instance *pinstance)
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if (new_entry) {
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if (hidden_entry) {
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spin_unlock_irqrestore(&pinstance->resource_lock,
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lock_flags);
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goto out_notify_apps;
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}
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/* If there are more number of resources than what driver can
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* manage, do not notify the applications about the CCN. Just
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* ignore this notifications and re-register the same HCAM
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@ -1454,8 +1469,9 @@ static void pmcraid_handle_config_change(struct pmcraid_instance *pinstance)
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sizeof(struct pmcraid_config_table_entry));
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if (pinstance->ccn.hcam->notification_type ==
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NOTIFICATION_TYPE_ENTRY_DELETED) {
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NOTIFICATION_TYPE_ENTRY_DELETED || hidden_entry) {
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if (res->scsi_dev) {
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res->cfg_entry.unique_flags1 &= 0x7F;
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res->change_detected = RES_CHANGE_DEL;
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res->cfg_entry.resource_handle =
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PMCRAID_INVALID_RES_HANDLE;
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@ -1,6 +1,9 @@
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/*
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* pmcraid.h -- PMC Sierra MaxRAID controller driver header file
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*
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* Written By: Anil Ravindranath<anil_ravindranath@pmc-sierra.com>
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* PMC-Sierra Inc
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*
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* Copyright (C) 2008, 2009 PMC Sierra Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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@ -106,7 +109,7 @@
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#define PMCRAID_VSET_LUN_ID 0x0
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#define PMCRAID_PHYS_BUS_ID 0x0
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#define PMCRAID_VIRTUAL_ENCL_BUS_ID 0x8
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#define PMCRAID_MAX_VSET_TARGETS 240
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#define PMCRAID_MAX_VSET_TARGETS 0x7F
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#define PMCRAID_MAX_VSET_LUNS_PER_TARGET 8
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#define PMCRAID_IOA_MAX_SECTORS 32767
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