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| author |   Xiang Chen <chenxiang66@hisilicon.com> | 2017-12-09 01:16:50 +0800 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2017-12-20 21:11:44 -0500 |
| commit | 4d0951ee70d348b694ce2bbdcc65b684239da4b4 (patch) | |
| tree | fc5cf8fbfd3fa4460d8abee2a9c97cf47b09b8e4 /drivers/scsi/hisi_sas/hisi_sas.h | |
| parent | scsi: hisi_sas: re-add the lldd_port_deformed() (diff) | |
| download | linux-dev-4d0951ee70d348b694ce2bbdcc65b684239da4b4.tar.xz linux-dev-4d0951ee70d348b694ce2bbdcc65b684239da4b4.zip | |
scsi: hisi_sas: add v3 hw suspend and resume
For v3 hw SAS, it supports configuring power state from D0 to D3 for entering
Low Power status and power state from D3 to D0 for quit Low Power status.
When power state from D0 to D3, HW will send FLR to clear the registers of
ECAM and BAR space, and when power state from D3 to D0, it will clear the
registers of ECAM space only.
So when suspend, need to do like controller reset (including disable
interrupts/DQ/PHY/BUS), and also release slots after FLR. When resume,
re-config the registers of BAR space.
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/hisi_sas/hisi_sas.h')
| -rw-r--r-- | drivers/scsi/hisi_sas/hisi_sas.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h index 4343c4ce338d..cc050299cc0b 100644 --- a/drivers/scsi/hisi_sas/hisi_sas.h +++ b/drivers/scsi/hisi_sas/hisi_sas.h @@ -461,4 +461,5 @@ extern void hisi_sas_sync_rst_work_handler(struct work_struct *work); extern void hisi_sas_kill_tasklets(struct hisi_hba *hisi_hba); extern bool hisi_sas_notify_phy_event(struct hisi_sas_phy *phy, enum hisi_sas_phy_event event); +extern void hisi_sas_release_tasks(struct hisi_hba *hisi_hba); #endif |