From 0258141aaab3007949ba0e67c3d28436354429bb Mon Sep 17 00:00:00 2001 From: Xiaofei Tan Date: Sat, 9 Dec 2017 01:16:34 +0800 Subject: [PATCH] scsi: hisi_sas: relocate clearing ITCT and freeing device In certain scenarios we may just want to clear the ITCT for a device, and not free other resources like the SATA bitmap using in v2 hw. To facilitate this, this patch relocates the code of clearing ITCT from free_device() to a new hw interface clear_itct(). Then for some hw, we should not realise free_device() if there's nothing left to do for it. [mkp: typo] Signed-off-by: Xiaofei Tan Signed-off-by: John Garry Signed-off-by: Martin K. Petersen --- drivers/scsi/hisi_sas/hisi_sas.h | 3 ++- drivers/scsi/hisi_sas/hisi_sas_main.c | 7 +++++-- drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 4 ++-- drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 16 +++++++++++----- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 4 ++-- 5 files changed, 22 insertions(+), 12 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h index 83357b03..b2534ca 100644 --- a/drivers/scsi/hisi_sas/hisi_sas.h +++ b/drivers/scsi/hisi_sas/hisi_sas.h @@ -205,8 +205,9 @@ struct hisi_sas_hw { void (*phy_set_linkrate)(struct hisi_hba *hisi_hba, int phy_no, struct sas_phy_linkrates *linkrates); enum sas_linkrate (*phy_get_max_linkrate)(void); - void (*free_device)(struct hisi_hba *hisi_hba, + void (*clear_itct)(struct hisi_hba *hisi_hba, struct hisi_sas_device *dev); + void (*free_device)(struct hisi_sas_device *sas_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); diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index d842530..6446ce2 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -743,7 +743,10 @@ static void hisi_sas_dev_gone(struct domain_device *device) hisi_sas_dereg_device(hisi_hba, device); - hisi_hba->hw->free_device(hisi_hba, sas_dev); + hisi_hba->hw->clear_itct(hisi_hba, sas_dev); + if (hisi_hba->hw->free_device) + hisi_hba->hw->free_device(sas_dev); + device->lldd_dev = NULL; memset(sas_dev, 0, sizeof(*sas_dev)); sas_dev->dev_type = SAS_PHY_UNUSED; @@ -1001,7 +1004,7 @@ static void hisi_sas_refresh_port_id(struct hisi_hba *hisi_hba, || !device || (device->port != sas_port)) continue; - hisi_hba->hw->free_device(hisi_hba, sas_dev); + hisi_hba->hw->clear_itct(hisi_hba, sas_dev); /* Update linkrate of directly attached device. */ if (!device->parent) diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c index dc6eca8..8cb9061 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c @@ -544,7 +544,7 @@ static void setup_itct_v1_hw(struct hisi_hba *hisi_hba, (0xff00ULL << ITCT_HDR_REJ_OPEN_TL_OFF)); } -static void free_device_v1_hw(struct hisi_hba *hisi_hba, +static void clear_itct_v1_hw(struct hisi_hba *hisi_hba, struct hisi_sas_device *sas_dev) { u64 dev_id = sas_dev->device_id; @@ -1850,7 +1850,7 @@ static const struct hisi_sas_hw hisi_sas_v1_hw = { .hw_init = hisi_sas_v1_init, .setup_itct = setup_itct_v1_hw, .sl_notify = sl_notify_v1_hw, - .free_device = free_device_v1_hw, + .clear_itct = clear_itct_v1_hw, .prep_smp = prep_smp_v1_hw, .prep_ssp = prep_ssp_v1_hw, .get_free_slot = get_free_slot_v1_hw, diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c index 5d3467f..cd9cd84 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c @@ -952,7 +952,7 @@ static void setup_itct_v2_hw(struct hisi_hba *hisi_hba, (0x1ULL << ITCT_HDR_RTOLT_OFF)); } -static void free_device_v2_hw(struct hisi_hba *hisi_hba, +static void clear_itct_v2_hw(struct hisi_hba *hisi_hba, struct hisi_sas_device *sas_dev) { DECLARE_COMPLETION_ONSTACK(completion); @@ -963,10 +963,6 @@ static void free_device_v2_hw(struct hisi_hba *hisi_hba, sas_dev->completion = &completion; - /* SoC bug workaround */ - if (dev_is_sata(sas_dev->sas_device)) - clear_bit(sas_dev->sata_idx, hisi_hba->sata_dev_bitmap); - /* clear the itct interrupt state */ if (ENT_INT_SRC3_ITC_INT_MSK & reg_val) hisi_sas_write32(hisi_hba, ENT_INT_SRC3, @@ -981,6 +977,15 @@ static void free_device_v2_hw(struct hisi_hba *hisi_hba, } } +static void free_device_v2_hw(struct hisi_sas_device *sas_dev) +{ + struct hisi_hba *hisi_hba = sas_dev->hisi_hba; + + /* SoC bug workaround */ + if (dev_is_sata(sas_dev->sas_device)) + clear_bit(sas_dev->sata_idx, hisi_hba->sata_dev_bitmap); +} + static int reset_hw_v2_hw(struct hisi_hba *hisi_hba) { int i, reset_val; @@ -3415,6 +3420,7 @@ static const struct hisi_sas_hw hisi_sas_v2_hw = { .alloc_dev = alloc_dev_quirk_v2_hw, .sl_notify = sl_notify_v2_hw, .get_wideport_bitmap = get_wideport_bitmap_v2_hw, + .clear_itct = clear_itct_v2_hw, .free_device = free_device_v2_hw, .prep_smp = prep_smp_v2_hw, .prep_ssp = prep_ssp_v2_hw, diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index 19b1f2f..44f07bc 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -588,7 +588,7 @@ static void setup_itct_v3_hw(struct hisi_hba *hisi_hba, (0x1ULL << ITCT_HDR_RTOLT_OFF)); } -static void free_device_v3_hw(struct hisi_hba *hisi_hba, +static void clear_itct_v3_hw(struct hisi_hba *hisi_hba, struct hisi_sas_device *sas_dev) { DECLARE_COMPLETION_ONSTACK(completion); @@ -1951,7 +1951,7 @@ static const struct hisi_sas_hw hisi_sas_v3_hw = { .max_command_entries = HISI_SAS_COMMAND_ENTRIES_V3_HW, .get_wideport_bitmap = get_wideport_bitmap_v3_hw, .complete_hdr_size = sizeof(struct hisi_sas_complete_v3_hdr), - .free_device = free_device_v3_hw, + .clear_itct = clear_itct_v3_hw, .sl_notify = sl_notify_v3_hw, .prep_ssp = prep_ssp_v3_hw, .prep_smp = prep_smp_v3_hw, -- 2.7.4