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Message-Id: <1498745954-7907-8-git-send-email-suganath-prabu.subramani@broadcom.com>
Date: Thu, 29 Jun 2017 19:49:08 +0530
From: Suganath Prabu S <suganath-prabu.subramani@...adcom.com>
To: JBottomley@...allels.com, jejb@...nel.org, hch@...radead.org
Cc: martin.petersen@...cle.com, linux-scsi@...r.kernel.org,
Sathya.Prakash@...adcom.com, kashyap.desai@...adcom.com,
krishnaraddi.mankani@...adcom.com, linux-kernel@...r.kernel.org,
suganath-prabu.subramani@...adcom.com,
chaitra.basappa@...adcom.com, sreekanth.reddy@...adcom.com
Subject: [PATCH 07/13] mpt3sas: API's to remove nvme drive from sml
Below API's are included in nvme drive remove path.
_scsih_pcie_device_remove
_scsih_pcie_device_remove_by_handle
_scsih_pcie_device_remove_from_sml
Signed-off-by: Chaitra P B <chaitra.basappa@...adcom.com>
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@...adcom.com>
---
drivers/scsi/mpt3sas/mpt3sas_scsih.c | 190 +++++++++++++++++++++++++++++++++-
1 files changed, 188 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index e52bebe..68aa102 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -73,7 +73,8 @@ static void _scsih_remove_device(struct MPT3SAS_ADAPTER *ioc,
static int _scsih_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle,
u8 retry_count, u8 is_pd);
static int _scsih_pcie_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle);
-
+static void _scsih_pcie_device_remove_from_sml(struct MPT3SAS_ADAPTER *ioc,
+ struct _pcie_device *pcie_device);
static u8 _scsih_check_for_pending_tm(struct MPT3SAS_ADAPTER *ioc, u16 smid);
/* global parameters */
@@ -1048,6 +1049,86 @@ mpt3sas_get_pdev_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
return pcie_device;
}
+
+/**
+ * _scsih_pcie_device_remove - remove pcie_device from list.
+ * @ioc: per adapter object
+ * @pcie_device: the pcie_device object
+ * Context: This function will acquire ioc->pcie_device_lock.
+ *
+ * If pcie_device is on the list, remove it and decrement its reference count.
+ */
+static void
+_scsih_pcie_device_remove(struct MPT3SAS_ADAPTER *ioc,
+ struct _pcie_device *pcie_device)
+{
+ unsigned long flags;
+ int was_on_pcie_device_list = 0;
+
+ if (!pcie_device)
+ return;
+ pr_info(MPT3SAS_FMT
+ "removing handle(0x%04x), wwid(0x%016llx)\n",
+ ioc->name, pcie_device->handle,
+ (unsigned long long) pcie_device->wwid);
+ if (pcie_device->enclosure_handle != 0)
+ pr_info(MPT3SAS_FMT
+ "removing enclosure logical id(0x%016llx), slot(%d)\n",
+ ioc->name,
+ (unsigned long long)pcie_device->enclosure_logical_id,
+ pcie_device->slot);
+ if (pcie_device->connector_name[0] != '\0')
+ pr_info(MPT3SAS_FMT
+ "removing enclosure level(0x%04x), connector name( %s)\n",
+ ioc->name, pcie_device->enclosure_level,
+ pcie_device->connector_name);
+
+ spin_lock_irqsave(&ioc->pcie_device_lock, flags);
+ if (!list_empty(&pcie_device->list)) {
+ list_del_init(&pcie_device->list);
+ was_on_pcie_device_list = 1;
+ }
+ spin_unlock_irqrestore(&ioc->pcie_device_lock, flags);
+ if (was_on_pcie_device_list) {
+ kfree(pcie_device->serial_number);
+ pcie_device_put(pcie_device);
+ }
+}
+
+
+/**
+ * _scsih_pcie_device_remove_by_handle - removing pcie device object by handle
+ * @ioc: per adapter object
+ * @handle: device handle
+ *
+ * Return nothing.
+ */
+static void
+_scsih_pcie_device_remove_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle)
+{
+ struct _pcie_device *pcie_device;
+ unsigned long flags;
+ int was_on_pcie_device_list = 0;
+
+ if (ioc->shost_recovery)
+ return;
+
+ spin_lock_irqsave(&ioc->pcie_device_lock, flags);
+ pcie_device = __mpt3sas_get_pdev_by_handle(ioc, handle);
+ if (pcie_device) {
+ if (!list_empty(&pcie_device->list)) {
+ list_del_init(&pcie_device->list);
+ was_on_pcie_device_list = 1;
+ pcie_device_put(pcie_device);
+ }
+ }
+ spin_unlock_irqrestore(&ioc->pcie_device_lock, flags);
+ if (was_on_pcie_device_list) {
+ _scsih_pcie_device_remove_from_sml(ioc, pcie_device);
+ pcie_device_put(pcie_device);
+ }
+}
+
/**
* _scsih_pcie_device_add - add pcie_device object
* @ioc: per adapter object
@@ -6630,6 +6711,83 @@ _scsih_check_pcie_access_status(struct MPT3SAS_ADAPTER *ioc, u64 wwid,
(unsigned long long)wwid, handle);
return rc;
}
+
+/**
+ * _scsih_pcie_device_remove_from_sml - removing pcie device
+ * from SML and free up associated memory
+ * @ioc: per adapter object
+ * @pcie_device: the pcie_device object
+ *
+ * Return nothing.
+ */
+static void
+_scsih_pcie_device_remove_from_sml(struct MPT3SAS_ADAPTER *ioc,
+ struct _pcie_device *pcie_device)
+{
+ struct MPT3SAS_TARGET *sas_target_priv_data;
+
+ dewtprintk(ioc, pr_info(MPT3SAS_FMT
+ "%s: enter: handle(0x%04x), wwid(0x%016llx)\n", ioc->name, __func__,
+ pcie_device->handle, (unsigned long long)
+ pcie_device->wwid));
+ if (pcie_device->enclosure_handle != 0)
+ dewtprintk(ioc, pr_info(MPT3SAS_FMT
+ "%s: enter: enclosure logical id(0x%016llx), slot(%d)\n",
+ ioc->name, __func__,
+ (unsigned long long)pcie_device->enclosure_logical_id,
+ pcie_device->slot));
+ if (pcie_device->connector_name[0] != '\0')
+ dewtprintk(ioc, pr_info(MPT3SAS_FMT
+ "%s: enter: enclosure level(0x%04x), connector name( %s)\n",
+ ioc->name, __func__,
+ pcie_device->enclosure_level,
+ pcie_device->connector_name));
+
+ if (pcie_device->starget && pcie_device->starget->hostdata) {
+ sas_target_priv_data = pcie_device->starget->hostdata;
+ sas_target_priv_data->deleted = 1;
+ _scsih_ublock_io_device(ioc, pcie_device->wwid);
+ sas_target_priv_data->handle = MPT3SAS_INVALID_DEVICE_HANDLE;
+ }
+
+ pr_info(MPT3SAS_FMT
+ "removing handle(0x%04x), wwid (0x%016llx)\n",
+ ioc->name, pcie_device->handle,
+ (unsigned long long) pcie_device->wwid);
+ if (pcie_device->enclosure_handle != 0)
+ pr_info(MPT3SAS_FMT
+ "removing : enclosure logical id(0x%016llx), slot(%d)\n",
+ ioc->name,
+ (unsigned long long)pcie_device->enclosure_logical_id,
+ pcie_device->slot);
+ if (pcie_device->connector_name[0] != '\0')
+ pr_info(MPT3SAS_FMT
+ "removing: enclosure level(0x%04x), connector name( %s)\n",
+ ioc->name, pcie_device->enclosure_level,
+ pcie_device->connector_name);
+
+ if (pcie_device->starget)
+ scsi_remove_target(&pcie_device->starget->dev);
+ dewtprintk(ioc, pr_info(MPT3SAS_FMT
+ "%s: exit: handle(0x%04x), wwid(0x%016llx)\n", ioc->name, __func__,
+ pcie_device->handle, (unsigned long long)
+ pcie_device->wwid));
+ if (pcie_device->enclosure_handle != 0)
+ dewtprintk(ioc, pr_info(MPT3SAS_FMT
+ "%s: exit: enclosure logical id(0x%016llx), slot(%d)\n",
+ ioc->name, __func__,
+ (unsigned long long)pcie_device->enclosure_logical_id,
+ pcie_device->slot));
+ if (pcie_device->connector_name[0] != '\0')
+ dewtprintk(ioc, pr_info(MPT3SAS_FMT
+ "%s: exit: enclosure level(0x%04x), connector name( %s)\n",
+ ioc->name, __func__, pcie_device->enclosure_level,
+ pcie_device->connector_name));
+
+ kfree(pcie_device->serial_number);
+}
+
+
/**
* _scsih_pcie_check_device - checking device responsiveness
* @ioc: per adapter object
@@ -8571,11 +8729,12 @@ _scsih_search_responding_expanders(struct MPT3SAS_ADAPTER *ioc)
* Return nothing.
*/
static void
-_scsih_remove_unresponding_sas_devices(struct MPT3SAS_ADAPTER *ioc)
+_scsih_remove_unresponding_devices(struct MPT3SAS_ADAPTER *ioc)
{
struct _sas_device *sas_device, *sas_device_next;
struct _sas_node *sas_expander, *sas_expander_next;
struct _raid_device *raid_device, *raid_device_next;
+ struct _pcie_device *pcie_device, *pcie_device_next;
struct list_head tmp_list;
unsigned long flags;
LIST_HEAD(head);
@@ -8609,6 +8768,26 @@ _scsih_remove_unresponding_sas_devices(struct MPT3SAS_ADAPTER *ioc)
sas_device_put(sas_device);
}
+ pr_info(MPT3SAS_FMT
+ " Removing unresponding devices: pcie end-devices\n"
+ , ioc->name);
+ INIT_LIST_HEAD(&head);
+ spin_lock_irqsave(&ioc->pcie_device_lock, flags);
+ list_for_each_entry_safe(pcie_device, pcie_device_next,
+ &ioc->pcie_device_list, list) {
+ if (!pcie_device->responding)
+ list_move_tail(&pcie_device->list, &head);
+ else
+ pcie_device->responding = 0;
+ }
+ spin_unlock_irqrestore(&ioc->pcie_device_lock, flags);
+
+ list_for_each_entry_safe(pcie_device, pcie_device_next, &head, list) {
+ _scsih_pcie_device_remove_from_sml(ioc, pcie_device);
+ list_del_init(&pcie_device->list);
+ pcie_device_put(pcie_device);
+ }
+
/* removing unresponding volumes */
if (ioc->ir_firmware) {
pr_info(MPT3SAS_FMT "removing unresponding devices: volumes\n",
@@ -9410,6 +9589,7 @@ static void scsih_remove(struct pci_dev *pdev)
struct _sas_port *mpt3sas_port, *next_port;
struct _raid_device *raid_device, *next;
struct MPT3SAS_TARGET *sas_target_priv_data;
+ struct _pcie_device *pcie_device, *pcienext;
struct workqueue_struct *wq;
unsigned long flags;
@@ -9438,6 +9618,12 @@ static void scsih_remove(struct pci_dev *pdev)
(unsigned long long) raid_device->wwid);
_scsih_raid_device_remove(ioc, raid_device);
}
+ list_for_each_entry_safe(pcie_device, pcienext, &ioc->pcie_device_list,
+ list) {
+ _scsih_pcie_device_remove_from_sml(ioc, pcie_device);
+ list_del_init(&pcie_device->list);
+ pcie_device_put(pcie_device);
+ }
/* free ports attached to the sas_host */
list_for_each_entry_safe(mpt3sas_port, next_port,
--
1.7.1
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