@@ -1041,10 +1041,17 @@ void npu2_opencapi_phy_init(struct npu2_dev *dev)
}
}
-void npu2_opencapi_phy_reset(struct npu2_dev *dev)
+int npu2_opencapi_phy_reset(struct npu2_dev *dev)
{
- run_procedure(dev, 4); /* procedure_phy_reset */
- run_procedure(dev, 6); /* procedure_phy_rx_dccal */
+ int rc;
+
+ rc = run_procedure(dev, 4); /* procedure_phy_reset */
+ if (rc != PROCEDURE_COMPLETE)
+ return -1;
+ rc = run_procedure(dev, 6); /* procedure_phy_rx_dccal */
+ if (rc != PROCEDURE_COMPLETE)
+ return -1;
+ return 0;
}
void npu2_opencapi_phy_prbs31(struct npu2_dev *dev)
@@ -1187,6 +1187,7 @@ static int64_t npu2_opencapi_freset(struct pci_slot *slot)
struct npu2_dev *dev = phb_to_npu2_dev_ocapi(slot->phb);
uint32_t chip_id = dev->npu->chip_id;
uint8_t presence = 1;
+ int rc;
switch (slot->state) {
case OCAPI_SLOT_NORMAL:
@@ -1216,7 +1217,11 @@ static int64_t npu2_opencapi_freset(struct pci_slot *slot)
return pci_slot_set_sm_timeout(slot, msecs_to_tb(5));
case OCAPI_SLOT_FRESET_ASSERT_DELAY:
- npu2_opencapi_phy_reset(dev);
+ rc = npu2_opencapi_phy_reset(dev);
+ if (rc) {
+ OCAPIERR(dev, "FRESET: couldn't reset PHY state\n");
+ return OPAL_HARDWARE;
+ }
deassert_odl_reset(chip_id, dev->brick_index);
deassert_adapter_reset(dev);
pci_slot_set_state(slot,
@@ -234,7 +234,7 @@ void npu2_clear_link_flag(struct npu2_dev *ndev, uint8_t flag);
uint32_t reset_ntl(struct npu2_dev *ndev);
extern int nv_zcal_nominal;
void npu2_opencapi_phy_init(struct npu2_dev *dev);
-void npu2_opencapi_phy_reset(struct npu2_dev *dev);
+int npu2_opencapi_phy_reset(struct npu2_dev *dev);
void npu2_opencapi_phy_prbs31(struct npu2_dev *dev);
void npu2_opencapi_bump_ui_lane(struct npu2_dev *dev);
int64_t npu2_freeze_status(struct phb *phb __unused,
PHY reset can fail! Though past problems are now fixed, let's handle any future failure. Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com> --- Changelog: v2: - log a message if we couldn't reset the PHY (Christophe, Andrew) hw/npu2-hw-procedures.c | 13 ++++++++++--- hw/npu2-opencapi.c | 7 ++++++- include/npu2.h | 2 +- 3 files changed, 17 insertions(+), 5 deletions(-)