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scsi: hisi_sas: add phy_set_linkrate_v3_hw()

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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>
This commit is contained in:
Xiang Chen 2017-08-11 00:09:41 +08:00 committed by Martin K. Petersen
parent 056e4cc66c
commit 2400620c1f
1 changed files with 39 additions and 0 deletions
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39
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
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@ -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,