diff options
Diffstat (limited to 'drivers/net/ethernet/amazon/ena/ena_com.h')
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_com.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/drivers/net/ethernet/amazon/ena/ena_com.h b/drivers/net/ethernet/amazon/ena/ena_com.h index 9414e93d107b..64df2c48c9a6 100644 --- a/drivers/net/ethernet/amazon/ena/ena_com.h +++ b/drivers/net/ethernet/amazon/ena/ena_com.h @@ -210,6 +210,14 @@ struct ena_com_stats_admin { u64 no_completion; }; +struct ena_com_stats_phc { + u64 phc_cnt; + u64 phc_exp; + u64 phc_skp; + u64 phc_err_dv; + u64 phc_err_ts; +}; + struct ena_com_admin_queue { void *q_dmadev; struct ena_com_dev *ena_dev; @@ -258,6 +266,47 @@ struct ena_com_mmio_read { spinlock_t lock; }; +/* PTP hardware clock (PHC) MMIO read data info */ +struct ena_com_phc_info { + /* Internal PHC statistics */ + struct ena_com_stats_phc stats; + + /* PHC shared memory - virtual address */ + struct ena_admin_phc_resp *virt_addr; + + /* System time of last PHC request */ + ktime_t system_time; + + /* Spin lock to ensure a single outstanding PHC read */ + spinlock_t lock; + + /* PHC doorbell address as an offset to PCIe MMIO REG BAR */ + u32 doorbell_offset; + + /* Shared memory read expire timeout (usec) + * Max time for valid PHC retrieval, passing this threshold will fail + * the get time request and block new PHC requests for block_timeout_usec + * in order to prevent floods on busy device + */ + u32 expire_timeout_usec; + + /* Shared memory read abort timeout (usec) + * PHC requests block period, blocking starts once PHC request expired + * in order to prevent floods on busy device, + * any PHC requests during block period will be skipped + */ + u32 block_timeout_usec; + + /* PHC shared memory - physical address */ + dma_addr_t phys_addr; + + /* Request id sent to the device */ + u16 req_id; + + /* True if PHC is active in the device */ + bool active; +}; + struct ena_rss { /* Indirect table */ u16 *host_rss_ind_tbl; @@ -317,6 +366,7 @@ struct ena_com_dev { u32 ena_min_poll_delay_us; struct ena_com_mmio_read mmio_read; + struct ena_com_phc_info phc; struct ena_rss rss; u32 supported_features; @@ -382,6 +432,40 @@ struct ena_aenq_handlers { */ int ena_com_mmio_reg_read_request_init(struct ena_com_dev *ena_dev); +/* ena_com_phc_init - Allocate and initialize PHC feature + * @ena_dev: ENA communication layer struct + * @note: This method assumes PHC is supported by the device + * @return - 0 on success, negative value on failure + */ +int ena_com_phc_init(struct ena_com_dev *ena_dev); + +/* ena_com_phc_supported - Return if PHC feature is supported by the device + * @ena_dev: ENA communication layer struct + * @note: This method must be called after getting supported features + * @return - supported or not + */ +bool ena_com_phc_supported(struct ena_com_dev *ena_dev); + +/* ena_com_phc_config - Configure PHC feature + * @ena_dev: ENA communication layer struct + * Configure PHC feature in driver and device + * @note: This method assumes PHC is supported by the device + * @return - 0 on success, negative value on failure + */ +int ena_com_phc_config(struct ena_com_dev *ena_dev); + +/* ena_com_phc_destroy - Destroy PHC feature + * @ena_dev: ENA communication layer struct + */ +void ena_com_phc_destroy(struct ena_com_dev *ena_dev); + +/* ena_com_phc_get_timestamp - Retrieve PHC timestamp + * @ena_dev: ENA communication layer struct + * @timestamp: Retrieved PHC timestamp + * @return - 0 on success, negative value on failure + */ +int ena_com_phc_get_timestamp(struct ena_com_dev *ena_dev, u64 *timestamp); + /* ena_com_set_mmio_read_mode - Enable/disable the indirect mmio reg read mechanism * @ena_dev: ENA communication layer struct * @readless_supported: readless mode (enable/disable) |