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Subject[PATCH v4 21/32] scsi: hisi_sas: add path from phyup irq to SAS framework
Date
Signed-off-by: John Garry <john.garry@huawei.com>
---
drivers/scsi/hisi_sas/hisi_sas.h | 2 ++
drivers/scsi/hisi_sas/hisi_sas_main.c | 49 ++++++++++++++++++++++++++++++++++
drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 15 +++++++++++
3 files changed, 66 insertions(+)

diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index 938fa75..837d139 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -53,6 +53,7 @@ struct hisi_sas_phy {
struct asd_sas_phy sas_phy;
struct sas_identify identify;
struct timer_list timer;
+ struct work_struct phyup_ws;
u64 port_id; /* from hw */
u64 dev_sas_addr;
u64 phy_type;
@@ -87,6 +88,7 @@ struct hisi_sas_slot {

struct hisi_sas_hw {
int (*hw_init)(struct hisi_hba *hisi_hba);
+ void (*sl_notify)(struct hisi_hba *hisi_hba, int phy_no);
int complete_hdr_size;
};

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 6c13547..7bf6d2f 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -27,6 +27,53 @@ static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba)
hisi_sas_slot_index_clear(hisi_hba, i);
}

+static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no)
+{
+ struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
+ struct asd_sas_phy *sas_phy = &phy->sas_phy;
+ struct sas_ha_struct *sas_ha;
+
+ if (!phy->phy_attached)
+ return;
+
+ sas_ha = &hisi_hba->sha;
+ sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
+
+ if (sas_phy->phy) {
+ struct sas_phy *sphy = sas_phy->phy;
+
+ sphy->negotiated_linkrate = sas_phy->linkrate;
+ sphy->minimum_linkrate = phy->minimum_linkrate;
+ sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
+ sphy->maximum_linkrate = phy->maximum_linkrate;
+ }
+
+ if (phy->phy_type & PORT_TYPE_SAS) {
+ struct sas_identify_frame *id;
+
+ id = (struct sas_identify_frame *)phy->frame_rcvd;
+ id->dev_type = phy->identify.device_type;
+ id->initiator_bits = SAS_PROTOCOL_ALL;
+ id->target_bits = phy->identify.target_port_protocols;
+ } else if (phy->phy_type & PORT_TYPE_SATA) {
+ /*Nothing*/
+ }
+
+ sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
+ sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED);
+}
+
+static void hisi_sas_phyup_work(struct work_struct *work)
+{
+ struct hisi_sas_phy *phy =
+ container_of(work, struct hisi_sas_phy, phyup_ws);
+ struct hisi_hba *hisi_hba = phy->hisi_hba;
+ struct asd_sas_phy *sas_phy = &phy->sas_phy;
+ int phy_no = sas_phy->id;
+
+ hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */
+ hisi_sas_bytes_dmaed(hisi_hba, phy_no);
+}

static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
{
@@ -49,6 +96,8 @@ static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
sas_phy->frame_rcvd = &phy->frame_rcvd[0];
sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata;
sas_phy->lldd_phy = phy;
+
+ INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work);
}

static struct scsi_transport_template *hisi_sas_stt;
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
index 3ea666f..4364279 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
@@ -728,6 +728,19 @@ static void phys_init_v1_hw(struct hisi_hba *hisi_hba)
mod_timer(timer, jiffies + HZ);
}

+static void sl_notify_v1_hw(struct hisi_hba *hisi_hba, int phy_no)
+{
+ u32 sl_control;
+
+ sl_control = hisi_sas_phy_read32(hisi_hba, phy_no, SL_CONTROL);
+ sl_control |= SL_CONTROL_NOTIFY_EN_MSK;
+ hisi_sas_phy_write32(hisi_hba, phy_no, SL_CONTROL, sl_control);
+ msleep(1);
+ sl_control = hisi_sas_phy_read32(hisi_hba, phy_no, SL_CONTROL);
+ sl_control &= ~SL_CONTROL_NOTIFY_EN_MSK;
+ hisi_sas_phy_write32(hisi_hba, phy_no, SL_CONTROL, sl_control);
+}
+
/* Interrupts */
static irqreturn_t int_phyup_v1_hw(int irq_no, void *p)
{
@@ -791,6 +804,7 @@ static irqreturn_t int_phyup_v1_hw(int irq_no, void *p)
else if (phy->identify.device_type != SAS_PHY_UNUSED)
phy->identify.target_port_protocols =
SAS_PROTOCOL_SMP;
+ queue_work(hisi_hba->wq, &phy->phyup_ws);

end:
hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT2,
@@ -904,6 +918,7 @@ static int hisi_sas_v1_init(struct hisi_hba *hisi_hba)

static const struct hisi_sas_hw hisi_sas_v1_hw = {
.hw_init = hisi_sas_v1_init,
+ .sl_notify = sl_notify_v1_hw,
.complete_hdr_size = sizeof(struct hisi_sas_complete_v1_hdr),
};

--
1.9.1


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