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-rw-r--r--drivers/ntb/hw/amd/ntb_hw_amd.c9
-rw-r--r--drivers/ntb/hw/amd/ntb_hw_amd.h5
2 files changed, 12 insertions, 2 deletions
diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.c b/drivers/ntb/hw/amd/ntb_hw_amd.c
index 6ccba0d862df..b33f13b5b69d 100644
--- a/drivers/ntb/hw/amd/ntb_hw_amd.c
+++ b/drivers/ntb/hw/amd/ntb_hw_amd.c
@@ -199,6 +199,11 @@ static int amd_link_is_up(struct amd_ntb_dev *ndev)
if (!ndev->peer_sta)
return NTB_LNK_STA_ACTIVE(ndev->cntl_sta);
+ if (ndev->peer_sta & AMD_LINK_UP_EVENT) {
+ ndev->peer_sta = 0;
+ return 1;
+ }
+
/* If peer_sta is reset or D0 event, the ISR has
* started a timer to check link status of hardware.
* So here just clear status bit. And if peer_sta is
@@ -207,7 +212,7 @@ static int amd_link_is_up(struct amd_ntb_dev *ndev)
*/
if (ndev->peer_sta & AMD_PEER_RESET_EVENT)
ndev->peer_sta &= ~AMD_PEER_RESET_EVENT;
- else if (ndev->peer_sta & AMD_PEER_D0_EVENT)
+ else if (ndev->peer_sta & (AMD_PEER_D0_EVENT | AMD_LINK_DOWN_EVENT))
ndev->peer_sta = 0;
return 0;
@@ -491,6 +496,8 @@ static void amd_handle_event(struct amd_ntb_dev *ndev, int vec)
break;
case AMD_PEER_D3_EVENT:
case AMD_PEER_PMETO_EVENT:
+ case AMD_LINK_UP_EVENT:
+ case AMD_LINK_DOWN_EVENT:
amd_ack_smu(ndev, status);
/* link down */
diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.h b/drivers/ntb/hw/amd/ntb_hw_amd.h
index 2eac3cd3e646..13d73ed94a52 100644
--- a/drivers/ntb/hw/amd/ntb_hw_amd.h
+++ b/drivers/ntb/hw/amd/ntb_hw_amd.h
@@ -148,9 +148,12 @@ enum {
AMD_PEER_D3_EVENT = BIT(2),
AMD_PEER_PMETO_EVENT = BIT(3),
AMD_PEER_D0_EVENT = BIT(4),
+ AMD_LINK_UP_EVENT = BIT(5),
+ AMD_LINK_DOWN_EVENT = BIT(6),
AMD_EVENT_INTMASK = (AMD_PEER_FLUSH_EVENT |
AMD_PEER_RESET_EVENT | AMD_PEER_D3_EVENT |
- AMD_PEER_PMETO_EVENT | AMD_PEER_D0_EVENT),
+ AMD_PEER_PMETO_EVENT | AMD_PEER_D0_EVENT |
+ AMD_LINK_UP_EVENT | AMD_LINK_DOWN_EVENT),
AMD_PMESTAT_OFFSET = 0x480,
AMD_PMSGTRIG_OFFSET = 0x490,