diff options
| author | Xiaofei Tan <tanxiaofei@huawei.com> | 2018-05-21 13:09:22 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-05-29 05:40:32 +0300 |
| commit | b09fcd09e9767f81187aa4036fb16d14e2f2fc79 (patch) | |
| tree | bd625816c71499a436c744cfd30ab4080c1b2d43 | |
| parent | 78bd2b4f6e7c0522cc8bc8ad651f20813ae06f6c (diff) | |
| download | linux-b09fcd09e9767f81187aa4036fb16d14e2f2fc79.tar.xz | |
scsi: hisi_sas: Add v2 hw force PHY function for internal ATA command
This patch adds a force PHY function for internal ATA command for v2 hw.
Because there is an SoC bug in v2 hw, and need send an IO through each PHY
of a port to work around a bug which occurs after a controller reset.
This force PHY function will be used in the later patch.
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>
| -rw-r--r-- | drivers/scsi/hisi_sas/hisi_sas.h | 2 | ||||
| -rw-r--r-- | drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 11 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h index 60bd652534fe..9400824f23ad 100644 --- a/drivers/scsi/hisi_sas/hisi_sas.h +++ b/drivers/scsi/hisi_sas/hisi_sas.h @@ -180,6 +180,8 @@ struct hisi_sas_device { }; struct hisi_sas_tmf_task { + int force_phy; + int phy_id; u8 tmf; u16 tag_of_task_to_be_managed; }; diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c index fafb3f1835be..369ef7ebb1e0 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c @@ -296,6 +296,10 @@ #define CMD_HDR_RESP_REPORT_MSK (0x1 << CMD_HDR_RESP_REPORT_OFF) #define CMD_HDR_TLR_CTRL_OFF 6 #define CMD_HDR_TLR_CTRL_MSK (0x3 << CMD_HDR_TLR_CTRL_OFF) +#define CMD_HDR_PHY_ID_OFF 8 +#define CMD_HDR_PHY_ID_MSK (0x1ff << CMD_HDR_PHY_ID_OFF) +#define CMD_HDR_FORCE_PHY_OFF 17 +#define CMD_HDR_FORCE_PHY_MSK (0x1 << CMD_HDR_FORCE_PHY_OFF) #define CMD_HDR_PORT_OFF 18 #define CMD_HDR_PORT_MSK (0xf << CMD_HDR_PORT_OFF) #define CMD_HDR_PRIORITY_OFF 27 @@ -2512,6 +2516,7 @@ static void prep_ata_v2_hw(struct hisi_hba *hisi_hba, struct hisi_sas_cmd_hdr *hdr = slot->cmd_hdr; struct asd_sas_port *sas_port = device->port; struct hisi_sas_port *port = to_hisi_sas_port(sas_port); + struct hisi_sas_tmf_task *tmf = slot->tmf; u8 *buf_cmd; int has_data = 0, hdr_tag = 0; u32 dw1 = 0, dw2 = 0; @@ -2524,6 +2529,12 @@ static void prep_ata_v2_hw(struct hisi_hba *hisi_hba, else hdr->dw0 |= cpu_to_le32(4 << CMD_HDR_CMD_OFF); + if (tmf && tmf->force_phy) { + hdr->dw0 |= CMD_HDR_FORCE_PHY_MSK; + hdr->dw0 |= cpu_to_le32((1 << tmf->phy_id) + << CMD_HDR_PHY_ID_OFF); + } + /* dw1 */ switch (task->data_dir) { case DMA_TO_DEVICE: |