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| author |   Xiang Chen <chenxiang66@hisilicon.com> | 2017-03-23 01:25:18 +0800 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2017-03-23 11:12:01 -0400 |
| commit | 06ec0fb97c028102c95d52422fd6dc5ac701039f (patch) | |
| tree | c28bb8ca5a68622bb4a8e78348f2ec78eaa10c2c /drivers/scsi/hisi_sas/hisi_sas.h | |
| parent | scsi: hisi_sas: add to_hisi_sas_port() (diff) | |
| download | linux-dev-06ec0fb97c028102c95d52422fd6dc5ac701039f.tar.xz linux-dev-06ec0fb97c028102c95d52422fd6dc5ac701039f.zip | |
scsi: hisi_sas: add controller reset
There are some scenarios that we need to warm-reset to reset registers
of SAS controller. During reset we disable interrupts/DQs/PHYs, and
after reset we re-init the hardware and rescan the topology to see if
anything changed.
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.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 | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h index a018a8afa894..fd76a02873a5 100644 --- a/drivers/scsi/hisi_sas/hisi_sas.h +++ b/drivers/scsi/hisi_sas/hisi_sas.h @@ -31,6 +31,7 @@ #define HISI_SAS_QUEUE_SLOTS 512 #define HISI_SAS_MAX_ITCT_ENTRIES 2048 #define HISI_SAS_MAX_DEVICES HISI_SAS_MAX_ITCT_ENTRIES +#define HISI_SAS_RESET_BIT 0 #define HISI_SAS_STATUS_BUF_SZ \ (sizeof(struct hisi_sas_err_record) + 1024) @@ -175,6 +176,7 @@ 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); + int (*soft_reset)(struct hisi_hba *hisi_hba); int max_command_entries; int complete_hdr_size; }; @@ -233,7 +235,9 @@ struct hisi_hba { struct hisi_sas_breakpoint *sata_breakpoint; dma_addr_t sata_breakpoint_dma; struct hisi_sas_slot *slot_info; + unsigned long flags; const struct hisi_sas_hw *hw; /* Low level hw interface */ + struct work_struct rst_work; }; /* Generic HW DMA host memory structures */ @@ -356,4 +360,7 @@ extern void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy); extern void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task, struct hisi_sas_slot *slot); +extern void hisi_sas_init_mem(struct hisi_hba *hisi_hba); +extern void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 old_state, + u32 state); #endif |