diff options
Diffstat (limited to 'drivers/net/ethernet/meta/fbnic/fbnic_mac.h')
| -rw-r--r-- | drivers/net/ethernet/meta/fbnic/fbnic_mac.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_mac.h b/drivers/net/ethernet/meta/fbnic/fbnic_mac.h index f08fe8b7c497..10f30e0e8f69 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_mac.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic_mac.h @@ -8,6 +8,30 @@ struct fbnic_dev; +/* The RXB clock runs at 600 MHZ in the ASIC and the PAUSE_STORM_UNIT_WR + * is 10us granularity, so set the clock to 6000 (0x1770) + */ +#define FBNIC_RXB_PS_CLK_DIV 0x1770 + +/* Convert milliseconds to pause storm timeout units (10us granularity) */ +#define FBNIC_MAC_RXB_PS_TO(ms) ((ms) * 100) + +/* Convert pause storm timeout units (10us granularity) to milliseconds */ +#define FBNIC_MAC_RXB_PS_TO_MS(ps) ((ps) / 100) + +/* Set the default timer to 500ms, which should be longer than any + * reasonable period of continuous pausing. The service task, which runs + * once per second, periodically resets the pause storm trigger. + * + * As a result, on a functioning system, if pause continues, we enforce + * a duty cycle determined by the configured pause storm timeout (50% + * default). A crashed system will not have the service task and therefore + * pause will remain disabled until reboot recovery. + */ +#define FBNIC_MAC_PS_TO_DEFAULT_MS 500 +#define FBNIC_MAC_PS_TO_MAX_MS \ + FBNIC_MAC_RXB_PS_TO_MS(FIELD_MAX(FBNIC_RXB_PAUSE_STORM_THLD_TIME)) + #define FBNIC_MAX_JUMBO_FRAME_SIZE 9742 /* States loosely based on section 136.8.11.7.5 of IEEE 802.3-2022 Ethernet @@ -119,4 +143,7 @@ struct fbnic_mac { int fbnic_mac_init(struct fbnic_dev *fbd); void fbnic_mac_get_fw_settings(struct fbnic_dev *fbd, u8 *aui, u8 *fec); +int fbnic_mac_ps_protect_to_config(struct fbnic_dev *fbd, u16 timeout); +void fbnic_mac_ps_protect_handler(struct fbnic_dev *fbd); +bool fbnic_mac_check_tx_pause(struct fbnic_dev *fbd); #endif /* _FBNIC_MAC_H_ */ |