diff options
5 files changed, 66 insertions, 2 deletions
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_cn9k_pf.c b/drivers/net/ethernet/marvell/octeon_ep/octep_cn9k_pf.c index e2503c9bc8a1..90c3a419932d 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_cn9k_pf.c +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_cn9k_pf.c @@ -16,6 +16,9 @@ #define CTRL_MBOX_MAX_PF 128 #define CTRL_MBOX_SZ ((size_t)(0x400000 / CTRL_MBOX_MAX_PF)) +#define FW_HB_INTERVAL_IN_SECS 1 +#define FW_HB_MISS_COUNT 10 + /* Names of Hardware non-queue generic interrupts */ static char *cn93_non_ioq_msix_names[] = { "epf_ire_rint", @@ -249,6 +252,10 @@ static void octep_init_config_cn93_pf(struct octep_device *oct) conf->ctrl_mbox_cfg.barmem_addr = (void __iomem *)oct->mmio[2].hw_addr + (0x400000ull * 7) + (link * CTRL_MBOX_SZ); + + conf->hb_interval = FW_HB_INTERVAL_IN_SECS; + conf->max_hb_miss_cnt = FW_HB_MISS_COUNT; + } /* Setup registers for a hardware Tx Queue */ @@ -383,6 +390,8 @@ static bool octep_poll_non_ioq_interrupts_cn93_pf(struct octep_device *oct) octep_write_csr64(oct, CN93_SDP_EPF_OEI_RINT, reg0); if (reg0 & CN93_SDP_EPF_OEI_RINT_DATA_BIT_MBOX) queue_work(octep_wq, &oct->ctrl_mbox_task); + else if (reg0 & CN93_SDP_EPF_OEI_RINT_DATA_BIT_HBEAT) + atomic_set(&oct->hb_miss_cnt, 0); handled = true; } diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_config.h b/drivers/net/ethernet/marvell/octeon_ep/octep_config.h index f208f3f9a447..df7cd39d9fce 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_config.h +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_config.h @@ -200,5 +200,11 @@ struct octep_config { /* ctrl mbox config */ struct octep_ctrl_mbox_config ctrl_mbox_cfg; + + /* Configured maximum heartbeat miss count */ + u32 max_hb_miss_cnt; + + /* Configured firmware heartbeat interval in secs */ + u32 hb_interval; }; #endif /* _OCTEP_CONFIG_H_ */ diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c index ba0d5fe3081d..e1853da280f9 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c @@ -902,6 +902,37 @@ static void octep_intr_poll_task(struct work_struct *work) } /** + * octep_hb_timeout_task - work queue task to check firmware heartbeat. + * + * @work: pointer to hb work_struct + * + * Check for heartbeat miss count. Uninitialize oct device if miss count + * exceeds configured max heartbeat miss count. + * + **/ +static void octep_hb_timeout_task(struct work_struct *work) +{ + struct octep_device *oct = container_of(work, struct octep_device, + hb_task.work); + + int miss_cnt; + + miss_cnt = atomic_inc_return(&oct->hb_miss_cnt); + if (miss_cnt < oct->conf->max_hb_miss_cnt) { + queue_delayed_work(octep_wq, &oct->hb_task, + msecs_to_jiffies(oct->conf->hb_interval * 1000)); + return; + } + + dev_err(&oct->pdev->dev, "Missed %u heartbeats. Uninitializing\n", + miss_cnt); + rtnl_lock(); + if (netif_running(oct->netdev)) + octep_stop(oct->netdev); + rtnl_unlock(); +} + +/** * octep_ctrl_mbox_task - work queue task to handle ctrl mbox messages. * * @work: pointer to ctrl mbox work_struct @@ -938,7 +969,7 @@ static const char *octep_devid_to_str(struct octep_device *oct) int octep_device_setup(struct octep_device *oct) { struct pci_dev *pdev = oct->pdev; - int i; + int i, ret; /* allocate memory for oct->conf */ oct->conf = kzalloc(sizeof(*oct->conf), GFP_KERNEL); @@ -973,7 +1004,15 @@ int octep_device_setup(struct octep_device *oct) oct->pkind = CFG_GET_IQ_PKIND(oct->conf); - return octep_ctrl_net_init(oct); + ret = octep_ctrl_net_init(oct); + if (ret) + return ret; + + atomic_set(&oct->hb_miss_cnt, 0); + INIT_DELAYED_WORK(&oct->hb_task, octep_hb_timeout_task); + queue_delayed_work(octep_wq, &oct->hb_task, + msecs_to_jiffies(oct->conf->hb_interval * 1000)); + return 0; unsupported_dev: for (i = 0; i < OCTEP_MMIO_REGIONS; i++) @@ -1002,6 +1041,7 @@ static void octep_device_cleanup(struct octep_device *oct) } octep_ctrl_net_uninit(oct); + cancel_delayed_work_sync(&oct->hb_task); oct->hw_ops.soft_reset(oct); for (i = 0; i < OCTEP_MMIO_REGIONS; i++) { diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.h b/drivers/net/ethernet/marvell/octeon_ep/octep_main.h index 836d990ba3fa..e0907a719133 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.h +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.h @@ -280,6 +280,13 @@ struct octep_device { bool poll_non_ioq_intr; /* Work entry to poll non-ioq interrupts */ struct delayed_work intr_poll_task; + + /* Firmware heartbeat timer */ + struct timer_list hb_timer; + /* Firmware heartbeat miss count tracked by timer */ + atomic_t hb_miss_cnt; + /* Task to reset device on heartbeat miss */ + struct delayed_work hb_task; }; static inline u16 OCTEP_MAJOR_REV(struct octep_device *oct) diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_regs_cn9k_pf.h b/drivers/net/ethernet/marvell/octeon_ep/octep_regs_cn9k_pf.h index 0466fd9a002d..b25c3093dc7b 100644 --- a/drivers/net/ethernet/marvell/octeon_ep/octep_regs_cn9k_pf.h +++ b/drivers/net/ethernet/marvell/octeon_ep/octep_regs_cn9k_pf.h @@ -367,5 +367,7 @@ /* bit 0 for control mbox interrupt */ #define CN93_SDP_EPF_OEI_RINT_DATA_BIT_MBOX BIT_ULL(0) +/* bit 1 for firmware heartbeat interrupt */ +#define CN93_SDP_EPF_OEI_RINT_DATA_BIT_HBEAT BIT_ULL(1) #endif /* _OCTEP_REGS_CN9K_PF_H_ */ |