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Message-ID: <1497454412-91194-23-git-send-email-john.garry@huawei.com>
Date: Wed, 14 Jun 2017 23:33:32 +0800
From: John Garry <john.garry@...wei.com>
To: <jejb@...ux.vnet.ibm.com>, <martin.petersen@...cle.com>
CC: <linuxarm@...wei.com>, <linux-scsi@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <arnd@...db.de>,
<hch@...radead.org>, "Xiang Chen" <chenxiang66@...ilicon.com>,
John Garry <john.garry@...wei.com>
Subject: [PATCH v6 22/22] scsi: hisi_sas: modify internal abort dev flow for v3 hw
From: Xiang Chen <chenxiang66@...ilicon.com>
There is a change for abort dev for v3 hw: add registers to configure
unaborted iptt for a device, and then inform this to logic.
Signed-off-by: Xiang Chen <chenxiang66@...ilicon.com>
Signed-off-by: John Garry <john.garry@...wei.com>
---
drivers/scsi/hisi_sas/hisi_sas.h | 2 ++
drivers/scsi/hisi_sas/hisi_sas_main.c | 15 +++++++++++++++
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 28 ++++++++++++++++++++++++++++
3 files changed, 45 insertions(+)
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index e89f6ae..4fc2308 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -188,6 +188,8 @@ struct hisi_sas_hw {
void (*free_device)(struct hisi_hba *hisi_hba,
struct hisi_sas_device *dev);
int (*get_wideport_bitmap)(struct hisi_hba *hisi_hba, int port_id);
+ void (*dereg_device)(struct hisi_hba *hisi_hba,
+ struct domain_device *device);
int (*soft_reset)(struct hisi_hba *hisi_hba);
int max_command_entries;
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 0a32211..0e2db9a 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -727,6 +727,13 @@ static void hisi_sas_release_tasks(struct hisi_hba *hisi_hba)
}
}
+static void hisi_sas_dereg_device(struct hisi_hba *hisi_hba,
+ struct domain_device *device)
+{
+ if (hisi_hba->hw->dereg_device)
+ hisi_hba->hw->dereg_device(hisi_hba, device);
+}
+
static void hisi_sas_dev_gone(struct domain_device *device)
{
struct hisi_sas_device *sas_dev = device->lldd_dev;
@@ -740,6 +747,8 @@ static void hisi_sas_dev_gone(struct domain_device *device)
hisi_sas_internal_task_abort(hisi_hba, device,
HISI_SAS_INT_ABT_DEV, 0);
+ hisi_sas_dereg_device(hisi_hba, device);
+
hisi_hba->hw->free_device(hisi_hba, sas_dev);
device->lldd_dev = NULL;
memset(sas_dev, 0, sizeof(*sas_dev));
@@ -1071,6 +1080,7 @@ static int hisi_sas_abort_task(struct sas_task *task)
if (task->dev->dev_type == SAS_SATA_DEV) {
hisi_sas_internal_task_abort(hisi_hba, device,
HISI_SAS_INT_ABT_DEV, 0);
+ hisi_sas_dereg_device(hisi_hba, device);
rc = hisi_sas_softreset_ata_disk(device);
}
} else if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SMP) {
@@ -1137,6 +1147,10 @@ static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
return TMF_RESP_FUNC_FAILED;
sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
+ hisi_sas_internal_task_abort(hisi_hba, device,
+ HISI_SAS_INT_ABT_DEV, 0);
+ hisi_sas_dereg_device(hisi_hba, device);
+
rc = hisi_sas_debug_I_T_nexus_reset(device);
if (rc == TMF_RESP_FUNC_COMPLETE) {
@@ -1164,6 +1178,7 @@ static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
HISI_SAS_INT_ABT_DEV, 0);
if (rc == TMF_RESP_FUNC_FAILED)
goto out;
+ hisi_sas_dereg_device(hisi_hba, device);
phy = sas_get_local_phy(device);
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index cf1eb47..c998b81 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -50,6 +50,10 @@
#define CFG_ABT_SET_QUERY_IPTT 0xd4
#define CFG_SET_ABORTED_IPTT_OFF 0
#define CFG_SET_ABORTED_IPTT_MSK (0xfff << CFG_SET_ABORTED_IPTT_OFF)
+#define CFG_SET_ABORTED_EN_OFF 12
+#define CFG_ABT_SET_IPTT_DONE 0xd8
+#define CFG_ABT_SET_IPTT_DONE_OFF 0
+#define HGC_IOMB_PROC1_STATUS 0x104
#define CFG_1US_TIMER_TRSH 0xcc
#define CHNL_INT_STATUS 0x148
#define INT_COAL_EN 0x19c
@@ -583,6 +587,29 @@ static void free_device_v3_hw(struct hisi_hba *hisi_hba,
}
}
+static void dereg_device_v3_hw(struct hisi_hba *hisi_hba,
+ struct domain_device *device)
+{
+ struct hisi_sas_slot *slot, *slot2;
+ struct hisi_sas_device *sas_dev = device->lldd_dev;
+ u32 cfg_abt_set_query_iptt;
+
+ cfg_abt_set_query_iptt = hisi_sas_read32(hisi_hba,
+ CFG_ABT_SET_QUERY_IPTT);
+ list_for_each_entry_safe(slot, slot2, &sas_dev->list, entry) {
+ cfg_abt_set_query_iptt &= ~CFG_SET_ABORTED_IPTT_MSK;
+ cfg_abt_set_query_iptt |= (1 << CFG_SET_ABORTED_EN_OFF) |
+ (slot->idx << CFG_SET_ABORTED_IPTT_OFF);
+ hisi_sas_write32(hisi_hba, CFG_ABT_SET_QUERY_IPTT,
+ cfg_abt_set_query_iptt);
+ }
+ cfg_abt_set_query_iptt &= ~(1 << CFG_SET_ABORTED_EN_OFF);
+ hisi_sas_write32(hisi_hba, CFG_ABT_SET_QUERY_IPTT,
+ cfg_abt_set_query_iptt);
+ hisi_sas_write32(hisi_hba, CFG_ABT_SET_IPTT_DONE,
+ 1 << CFG_ABT_SET_IPTT_DONE_OFF);
+}
+
static int hw_init_v3_hw(struct hisi_hba *hisi_hba)
{
init_reg_v3_hw(hisi_hba);
@@ -1613,6 +1640,7 @@ static int hisi_sas_v3_init(struct hisi_hba *hisi_hba)
.phy_disable = disable_phy_v3_hw,
.phy_hard_reset = phy_hard_reset_v3_hw,
.phy_get_max_linkrate = phy_get_max_linkrate_v3_hw,
+ .dereg_device = dereg_device_v3_hw,
};
static struct Scsi_Host *
--
1.9.1
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