diff options
| author | Xiang Chen <chenxiang66@hisilicon.com> | 2017-08-10 19:09:41 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-08-25 05:28:48 +0300 |
| commit | 2400620c1fedb503f14f252e4ac799dfa45ed722 (patch) | |
| tree | 7c921c153f3ca239c168a614f878e52afcc77526 /drivers/scsi/hisi_sas | |
| parent | 056e4cc66c07d17f39945fec8d2d62e0a27e53ea (diff) | |
| download | linux-2400620c1fedb503f14f252e4ac799dfa45ed722.tar.xz | |
scsi: hisi_sas: add phy_set_linkrate_v3_hw()
Add function to set linkrate for v3 hw.
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')
| -rw-r--r-- | drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index 111e45c74e34..8e4bfadb79f8 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -1680,6 +1680,44 @@ static int hisi_sas_v3_init(struct hisi_hba *hisi_hba) return 0; } +static void phy_set_linkrate_v3_hw(struct hisi_hba *hisi_hba, int phy_no, + struct sas_phy_linkrates *r) +{ + u32 prog_phy_link_rate = + hisi_sas_phy_read32(hisi_hba, phy_no, PROG_PHY_LINK_RATE); + struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; + struct asd_sas_phy *sas_phy = &phy->sas_phy; + int i; + enum sas_linkrate min, max; + u32 rate_mask = 0; + + if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) { + max = sas_phy->phy->maximum_linkrate; + min = r->minimum_linkrate; + } else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) { + max = r->maximum_linkrate; + min = sas_phy->phy->minimum_linkrate; + } else + return; + + sas_phy->phy->maximum_linkrate = max; + sas_phy->phy->minimum_linkrate = min; + + min -= SAS_LINK_RATE_1_5_GBPS; + max -= SAS_LINK_RATE_1_5_GBPS; + + for (i = 0; i <= max; i++) + rate_mask |= 1 << (i * 2); + + prog_phy_link_rate &= ~0xff; + prog_phy_link_rate |= rate_mask; + + hisi_sas_phy_write32(hisi_hba, phy_no, PROG_PHY_LINK_RATE, + prog_phy_link_rate); + + phy_hard_reset_v3_hw(hisi_hba, phy_no); +} + static void interrupt_disable_v3_hw(struct hisi_hba *hisi_hba) { struct pci_dev *pdev = hisi_hba->pci_dev; @@ -1760,6 +1798,7 @@ static const struct hisi_sas_hw hisi_sas_v3_hw = { .phy_disable = disable_phy_v3_hw, .phy_hard_reset = phy_hard_reset_v3_hw, .phy_get_max_linkrate = phy_get_max_linkrate_v3_hw, + .phy_set_linkrate = phy_set_linkrate_v3_hw, .dereg_device = dereg_device_v3_hw, .soft_reset = soft_reset_v3_hw, .get_phys_state = get_phys_state_v3_hw, |