[PATCH 18/25] scsi: hisi_sas: add dev_gone and port_deformed

John Garry
2015-10-12T15:14:26Z

Add function calls for lldd_dev_gone and lldd_port_deformed.

Signed-off-by: John Garry <john.garry@huawei.com>
---
drivers/scsi/hisi_sas/hisi_sas.h | 7 +++
drivers/scsi/hisi_sas/hisi_sas_init.c | 2 +
drivers/scsi/hisi_sas/hisi_sas_main.c | 80 ++++++++++++++++++++++++++++++++++
drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 28 ++++++++++++
4 files changed, 117 insertions(+)

diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index 3f61a4a..265d9bd 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -352,14 +352,19 @@ union hisi_sas_command_table {
void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba);
void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int i);
int hisi_sas_dev_found(struct domain_device *dev);
+void hisi_sas_dev_gone(struct domain_device *dev);
int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags);
void hisi_sas_port_formed(struct asd_sas_phy *sas_phy);
+void hisi_sas_port_deformed(struct asd_sas_phy *sas_phy);
void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy);
void hisi_sas_wq_process(struct work_struct *work);
void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task,
struct hisi_sas_slot *slot);

/* hw specific functions */
+extern int slot_complete_v1_hw(struct hisi_hba *hisi_hba,
+ struct hisi_sas_slot *slot,
+ int abort);
extern void hisi_sas_setup_itct_v1_hw(struct hisi_hba *hisi_hba,
struct hisi_sas_device *device);
extern void start_delivery_v1_hw(struct hisi_hba *hisi_hba);
@@ -370,6 +375,8 @@ extern int prep_ssp_v1_hw(struct hisi_hba *hisi_hba,
extern int interrupt_init_v1_hw(struct hisi_hba *hisi_hba);
extern int interrupt_openall_v1_hw(struct hisi_hba *hisi_hba);
extern int hw_init_v1_hw(struct hisi_hba *hisi_hba);
+extern int free_device_v1_hw(struct hisi_hba *hisi_hba,
+ struct hisi_sas_device *dev);
extern int phys_init_v1_hw(struct hisi_hba *hisi_hba);
extern void sl_notify_v1_hw(struct hisi_hba *hisi_hba, int phy_no);
extern void setup_itct_v1_hw(struct hisi_hba *hisi_hba,
diff --git a/drivers/scsi/hisi_sas/hisi_sas_init.c b/drivers/scsi/hisi_sas/hisi_sas_init.c
index 703527b..ba64562 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_init.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_init.c
@@ -34,8 +34,10 @@ static struct scsi_host_template hisi_sas_sht = {

static struct sas_domain_function_template hisi_sas_transport_ops = {
.lldd_dev_found = hisi_sas_dev_found,
+ .lldd_dev_gone = hisi_sas_dev_gone,
.lldd_execute_task = hisi_sas_queue_command,
.lldd_port_formed = hisi_sas_port_formed,
+ .lldd_port_deformed = hisi_sas_port_deformed,
};

static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index fbc2cca..36ef8cd 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -514,12 +514,86 @@ void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
spin_unlock_irqrestore(&hisi_hba->lock, flags);
}

+void hisi_sas_do_release_task(struct hisi_hba *hisi_hba,
+ int phy_no, struct domain_device *device)
+{
+ struct hisi_sas_phy *phy;
+ struct hisi_sas_port *port;
+ struct hisi_sas_slot *slot, *slot2;
+ struct device *dev = &hisi_hba->pdev->dev;
+
+ phy = &hisi_hba->phy[phy_no];
+ port = phy->port;
+ if (!port)
+ return;
+
+ list_for_each_entry_safe(slot, slot2, &port->list, entry) {
+ struct sas_task *task;
+
+ task = slot->task;
+ if (device && task->dev != device)
+ continue;
+
+ dev_info(dev, "Release slot [%d:%d], task [%p]:\n",
+ slot->dlvry_queue, slot->dlvry_queue_slot, task);
+ slot_complete_v1_hw(hisi_hba, slot, 1);
+ }
+}
+
+static void hisi_sas_port_notify_deformed(struct asd_sas_phy *sas_phy,
+ int lock)
+{
+ struct domain_device *device;
+ struct hisi_sas_phy *phy = sas_phy->lldd_phy;
+ struct hisi_hba *hisi_hba = phy->hisi_hba;
+ struct asd_sas_port *sas_port = sas_phy->port;
+ struct hisi_sas_port *port = sas_port->lldd_port;
+ int phy_no = 0;
+
+ port->port_attached = 0;
+ port->id = -1;
+
+ while (phy != &hisi_hba->phy[phy_no]) {
+ phy_no++;
+
+ if (phy_no >= hisi_hba->n_phy)
+ return;
+ }
+ list_for_each_entry(device, &sas_port->dev_list, dev_list_node)
+ hisi_sas_do_release_task(phy->hisi_hba, phy_no, device);
+}

int hisi_sas_dev_found(struct domain_device *device)
{
return hisi_sas_dev_found_notify(device, 1);
}

+
+static void hisi_sas_dev_gone_notify(struct domain_device *device)
+{
+ struct hisi_sas_device *sas_dev = device->lldd_dev;
+ struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
+ struct device *dev = &hisi_hba->pdev->dev;
+
+ if (!sas_dev) {
+ pr_warn("%s: found dev has gone\n", __func__);
+ return;
+ }
+
+ dev_info(dev, "found dev[%lld:%x] is gone\n",
+ sas_dev->device_id, sas_dev->dev_type);
+
+ free_device_v1_hw(hisi_hba, sas_dev);
+
+ device->lldd_dev = NULL;
+ sas_dev->sas_device = NULL;
+}
+
+void hisi_sas_dev_gone(struct domain_device *device)
+{
+ hisi_sas_dev_gone_notify(device);
+}
+
int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
{
return hisi_sas_task_exec(task, gfp_flags, NULL, 0, NULL);
@@ -529,6 +603,12 @@ void hisi_sas_port_formed(struct asd_sas_phy *sas_phy)
{
hisi_sas_port_notify_formed(sas_phy, 1);
}
+
+void hisi_sas_port_deformed(struct asd_sas_phy *sas_phy)
+{
+ hisi_sas_port_notify_deformed(sas_phy, 1);
+}
+
static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy)
{
phy->phy_attached = 0;
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
index fadd163..2de54a7 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
@@ -534,6 +534,34 @@ void setup_itct_v1_hw(struct hisi_hba *hisi_hba,
(0xff00 < ITCT_HDR_REJ_OPEN_TL_OFF));
}

+int free_device_v1_hw(struct hisi_hba *hisi_hba,
+ struct hisi_sas_device *sas_dev)
+{
+ u64 dev_id = sas_dev->device_id;
+ struct hisi_sas_itct *itct = &hisi_hba->itct[dev_id];
+ u32 qw0, reg_val = hisi_sas_read32(hisi_hba, CFG_AGING_TIME);
+
+ reg_val |= CFG_AGING_TIME_ITCT_REL_MSK;
+ hisi_sas_write32(hisi_hba, CFG_AGING_TIME, reg_val);
+
+ /* free itct */
+ udelay(1);
+ reg_val = hisi_sas_read32(hisi_hba, CFG_AGING_TIME);
+ reg_val &= ~CFG_AGING_TIME_ITCT_REL_MSK;
+ hisi_sas_write32(hisi_hba, CFG_AGING_TIME, reg_val);
+
+ qw0 = cpu_to_le64(itct->qw0);
+ qw0 &= ~ITCT_HDR_VALID_MSK;
+ itct->qw0 = cpu_to_le64(qw0);
+
+ memset(sas_dev, 0, sizeof(*sas_dev));
+ sas_dev->device_id = dev_id;
+ sas_dev->dev_type = SAS_PHY_UNUSED;
+ sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
+
+ return 0;
+}
+
static int reset_hw_v1_hw(struct hisi_hba *hisi_hba)
{
int i;
--
1.9.1