diff options
Diffstat (limited to 'drivers/net/ethernet/pensando/ionic/ionic_dev.c')
| -rw-r--r-- | drivers/net/ethernet/pensando/ionic/ionic_dev.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.c b/drivers/net/ethernet/pensando/ionic/ionic_dev.c index 1dfe962e22e0..9aac647290f7 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_dev.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.c @@ -106,6 +106,8 @@ int ionic_dev_setup(struct ionic *ionic) idev->last_fw_hb = 0; idev->fw_hb_ready = true; idev->fw_status_ready = true; + idev->fw_generation = IONIC_FW_STS_F_GENERATION & + ioread8(&idev->dev_info_regs->fw_status); mod_timer(&ionic->watchdog_timer, round_jiffies(jiffies + ionic->watchdog_period)); @@ -121,7 +123,9 @@ int ionic_heartbeat_check(struct ionic *ionic) { struct ionic_dev *idev = &ionic->idev; unsigned long check_time, last_check_time; - bool fw_status_ready, fw_hb_ready; + bool fw_status_ready = true; + bool fw_hb_ready; + u8 fw_generation; u8 fw_status; u32 fw_hb; @@ -140,9 +144,29 @@ do_check_time: /* firmware is useful only if the running bit is set and * fw_status != 0xff (bad PCI read) + * If fw_status is not ready don't bother with the generation. */ fw_status = ioread8(&idev->dev_info_regs->fw_status); - fw_status_ready = (fw_status != 0xff) && (fw_status & IONIC_FW_STS_F_RUNNING); + + if (fw_status == 0xff || !(fw_status & IONIC_FW_STS_F_RUNNING)) { + fw_status_ready = false; + } else { + fw_generation = fw_status & IONIC_FW_STS_F_GENERATION; + if (idev->fw_generation != fw_generation) { + dev_info(ionic->dev, "FW generation 0x%02x -> 0x%02x\n", + idev->fw_generation, fw_generation); + + idev->fw_generation = fw_generation; + + /* If the generation changed, the fw status is not + * ready so we need to trigger a fw-down cycle. After + * the down, the next watchdog will see the fw is up + * and the generation value stable, so will trigger + * the fw-up activity. + */ + fw_status_ready = false; + } + } /* is this a transition? */ if (fw_status_ready != idev->fw_status_ready) { |