#define ENA_MAX_NUM_IO_QUEUES 128U /* We need to queues for each IO (on for Tx and one for Rx) */ #define ENA_TOTAL_NUM_QUEUES (2 * (ENA_MAX_NUM_IO_QUEUES))
#define ENA_MAX_HANDLERS 256
#define ENA_MAX_PHYS_ADDR_SIZE_BITS 48
/* Unit in usec */ #define ENA_REG_READ_TIMEOUT 200000
/* numa configuration register (for TPH) */
u32 __iomem *numa_node_cfg_reg;
/* The value to write to the above register to unmask * the interrupt of this queue
*/
u32 msix_vector ____cacheline_aligned;
enum queue_direction direction;
/* holds the number of cdesc of the current packet */
u16 cur_rx_pkt_cdesc_count; /* save the first cdesc idx of the current packet */
u16 cur_rx_pkt_cdesc_start_idx;
struct ena_com_io_bounce_buffer_control {
u8 *base_buffer;
u16 next_to_use;
u16 buffer_size;
u16 buffers_num; /* Must be a power of 2 */
};
/* This struct is to keep tracking the current location of the next llq entry */ struct ena_com_llq_pkt_ctrl {
u8 *curr_bounce_buf;
u16 idx;
u16 descs_left_in_line;
};
/* 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;
/* interrupt moderation intervals are in usec divided by * intr_delay_resolution, which is supplied by the device.
*/
u32 intr_moder_tx_interval;
u32 intr_moder_rx_interval;
/* ena_com_mmio_reg_read_request_init - Init the mmio reg read mechanism * @ena_dev: ENA communication layer struct * * Initialize the register read mechanism. * * @note: This method must be the first stage in the initialization sequence. * * @return - 0 on success, negative value on failure.
*/ 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)
*/ void ena_com_set_mmio_read_mode(struct ena_com_dev *ena_dev, bool readless_supported);
/* ena_com_mmio_reg_read_request_write_dev_addr - Write the mmio reg read return * value physical address. * @ena_dev: ENA communication layer struct
*/ void ena_com_mmio_reg_read_request_write_dev_addr(struct ena_com_dev *ena_dev);
/* ena_com_mmio_reg_read_request_destroy - Destroy the mmio reg read mechanism * @ena_dev: ENA communication layer struct
*/ void ena_com_mmio_reg_read_request_destroy(struct ena_com_dev *ena_dev);
/* ena_com_admin_init - Init the admin and the async queues * @ena_dev: ENA communication layer struct * @aenq_handlers: Those handlers to be called upon event. * * Initialize the admin submission and completion queues. * Initialize the asynchronous events notification queues. * * @return - 0 on success, negative value on failure.
*/ int ena_com_admin_init(struct ena_com_dev *ena_dev, struct ena_aenq_handlers *aenq_handlers);
/* ena_com_admin_destroy - Destroy the admin and the async events queues. * @ena_dev: ENA communication layer struct * * @note: Before calling this method, the caller must validate that the device * won't send any additional admin completions/aenq. * To achieve that, a FLR is recommended.
*/ void ena_com_admin_destroy(struct ena_com_dev *ena_dev);
/* ena_com_dev_reset - Perform device FLR to the device. * @ena_dev: ENA communication layer struct * @reset_reason: Specify what is the trigger for the reset in case of an error. * * @return - 0 on success, negative value on failure.
*/ int ena_com_dev_reset(struct ena_com_dev *ena_dev, enum ena_regs_reset_reason_types reset_reason);
/* ena_com_create_io_queue - Create io queue. * @ena_dev: ENA communication layer struct * @ctx - create context structure * * Create the submission and the completion queues. * * @return - 0 on success, negative value on failure.
*/ int ena_com_create_io_queue(struct ena_com_dev *ena_dev, struct ena_com_create_io_ctx *ctx);
/* ena_com_destroy_io_queue - Destroy IO queue with the queue id - qid. * @ena_dev: ENA communication layer struct * @qid - the caller virtual queue id.
*/ void ena_com_destroy_io_queue(struct ena_com_dev *ena_dev, u16 qid);
/* ena_com_get_io_handlers - Return the io queue handlers * @ena_dev: ENA communication layer struct * @qid - the caller virtual queue id. * @io_sq - IO submission queue handler * @io_cq - IO completion queue handler. * * @return - 0 on success, negative value on failure.
*/ int ena_com_get_io_handlers(struct ena_com_dev *ena_dev, u16 qid, struct ena_com_io_sq **io_sq, struct ena_com_io_cq **io_cq);
/* ena_com_admin_aenq_enable - ENAble asynchronous event notifications * @ena_dev: ENA communication layer struct * * After this method, aenq event can be received via AENQ.
*/ void ena_com_admin_aenq_enable(struct ena_com_dev *ena_dev);
/* ena_com_set_admin_running_state - Set the state of the admin queue * @ena_dev: ENA communication layer struct * * Change the state of the admin queue (enable/disable)
*/ void ena_com_set_admin_running_state(struct ena_com_dev *ena_dev, bool state);
/* ena_com_get_admin_running_state - Get the admin queue state * @ena_dev: ENA communication layer struct * * Retrieve the state of the admin queue (enable/disable) * * @return - current polling mode (enable/disable)
*/ bool ena_com_get_admin_running_state(struct ena_com_dev *ena_dev);
/* ena_com_set_admin_polling_mode - Set the admin completion queue polling mode * @ena_dev: ENA communication layer struct * @polling: ENAble/Disable polling mode * * Set the admin completion mode.
*/ void ena_com_set_admin_polling_mode(struct ena_com_dev *ena_dev, bool polling);
/* ena_com_admin_q_comp_intr_handler - admin queue interrupt handler * @ena_dev: ENA communication layer struct * * This method goes over the admin completion queue and wakes up all the pending * threads that wait on the commands wait event. * * @note: Should be called after MSI-X interrupt.
*/ void ena_com_admin_q_comp_intr_handler(struct ena_com_dev *ena_dev);
/* ena_com_aenq_intr_handler - AENQ interrupt handler * @ena_dev: ENA communication layer struct * * This method goes over the async event notification queue and calls the proper * aenq handler.
*/ void ena_com_aenq_intr_handler(struct ena_com_dev *ena_dev, void *data);
/* ena_com_abort_admin_commands - Abort all the outstanding admin commands. * @ena_dev: ENA communication layer struct * * This method aborts all the outstanding admin commands. * The caller should then call ena_com_wait_for_abort_completion to make sure * all the commands were completed.
*/ void ena_com_abort_admin_commands(struct ena_com_dev *ena_dev);
/* ena_com_wait_for_abort_completion - Wait for admin commands abort. * @ena_dev: ENA communication layer struct * * This method waits until all the outstanding admin commands are completed.
*/ void ena_com_wait_for_abort_completion(struct ena_com_dev *ena_dev);
/* ena_com_validate_version - Validate the device parameters * @ena_dev: ENA communication layer struct * * This method verifies the device parameters are the same as the saved * parameters in ena_dev. * This method is useful after device reset, to validate the device mac address * and the device offloads are the same as before the reset. * * @return - 0 on success negative value otherwise.
*/ int ena_com_validate_version(struct ena_com_dev *ena_dev);
/* ena_com_get_link_params - Retrieve physical link parameters. * @ena_dev: ENA communication layer struct * @resp: Link parameters * * Retrieve the physical link parameters, * like speed, auto-negotiation and full duplex support. * * @return - 0 on Success negative value otherwise.
*/ int ena_com_get_link_params(struct ena_com_dev *ena_dev, struct ena_admin_get_feat_resp *resp);
/* ena_com_get_dma_width - Retrieve physical dma address width the device * supports. * @ena_dev: ENA communication layer struct * * Retrieve the maximum physical address bits the device can handle. * * @return: > 0 on Success and negative value otherwise.
*/ int ena_com_get_dma_width(struct ena_com_dev *ena_dev);
/* ena_com_set_aenq_config - Set aenq groups configurations * @ena_dev: ENA communication layer struct * @groups flag: bit fields flags of enum ena_admin_aenq_group. * * Configure which aenq event group the driver would like to receive. * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_set_aenq_config(struct ena_com_dev *ena_dev, u32 groups_flag);
/* ena_com_get_dev_attr_feat - Get device features * @ena_dev: ENA communication layer struct * @get_feat_ctx: returned context that contain the get features. * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_get_dev_attr_feat(struct ena_com_dev *ena_dev, struct ena_com_dev_get_features_ctx *get_feat_ctx);
/* ena_com_get_eni_stats - Get extended network interface statistics * @ena_dev: ENA communication layer struct * @stats: stats return value * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_get_eni_stats(struct ena_com_dev *ena_dev, struct ena_admin_eni_stats *stats);
/* ena_com_get_ena_srd_info - Get ENA SRD network interface statistics * @ena_dev: ENA communication layer struct * @info: ena srd stats and flags * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_get_ena_srd_info(struct ena_com_dev *ena_dev, struct ena_admin_ena_srd_info *info);
/* ena_com_get_customer_metrics - Get customer metrics for network interface * @ena_dev: ENA communication layer struct * @buffer: buffer for returned customer metrics * @len: size of the buffer * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_get_customer_metrics(struct ena_com_dev *ena_dev, char *buffer, u32 len);
/* ena_com_set_dev_mtu - Configure the device mtu. * @ena_dev: ENA communication layer struct * @mtu: mtu value * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_set_dev_mtu(struct ena_com_dev *ena_dev, u32 mtu);
/* ena_com_rss_init - Init RSS * @ena_dev: ENA communication layer struct * @log_size: indirection log size * * Allocate RSS/RFS resources. * The caller then can configure rss using ena_com_set_hash_function, * ena_com_set_hash_ctrl and ena_com_indirect_table_set. * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_rss_init(struct ena_com_dev *ena_dev, u16 log_size);
/* ena_com_rss_destroy - Destroy rss * @ena_dev: ENA communication layer struct * * Free all the RSS/RFS resources.
*/ void ena_com_rss_destroy(struct ena_com_dev *ena_dev);
/* ena_com_get_current_hash_function - Get RSS hash function * @ena_dev: ENA communication layer struct * * Return the current hash function. * @return: 0 or one of the ena_admin_hash_functions values.
*/ int ena_com_get_current_hash_function(struct ena_com_dev *ena_dev);
/* ena_com_fill_hash_function - Fill RSS hash function * @ena_dev: ENA communication layer struct * @func: The hash function (Toeplitz or crc) * @key: Hash key (for toeplitz hash) * @key_len: key length (max length 10 DW) * @init_val: initial value for the hash function * * Fill the ena_dev resources with the desire hash function, hash key, key_len * and key initial value (if needed by the hash function). * To flush the key into the device the caller should call * ena_com_set_hash_function. * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_fill_hash_function(struct ena_com_dev *ena_dev, enum ena_admin_hash_functions func, const u8 *key, u16 key_len, u32 init_val);
/* ena_com_set_hash_function - Flush the hash function and it dependencies to * the device. * @ena_dev: ENA communication layer struct * * Flush the hash function and it dependencies (key, key length and * initial value) if needed. * * @note: Prior to this method the caller should call ena_com_fill_hash_function * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_set_hash_function(struct ena_com_dev *ena_dev);
/* ena_com_get_hash_function - Retrieve the hash function from the device. * @ena_dev: ENA communication layer struct * @func: hash function * * Retrieve the hash function from the device. * * @note: If the caller called ena_com_fill_hash_function but didn't flush * it to the device, the new configuration will be lost. * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_get_hash_function(struct ena_com_dev *ena_dev, enum ena_admin_hash_functions *func);
/* ena_com_get_hash_key - Retrieve the hash key * @ena_dev: ENA communication layer struct * @key: hash key * * Retrieve the hash key. * * @note: If the caller called ena_com_fill_hash_key but didn't flush * it to the device, the new configuration will be lost. * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_get_hash_key(struct ena_com_dev *ena_dev, u8 *key); /* ena_com_fill_hash_ctrl - Fill RSS hash control * @ena_dev: ENA communication layer struct. * @proto: The protocol to configure. * @hash_fields: bit mask of ena_admin_flow_hash_fields * * Fill the ena_dev resources with the desire hash control (the ethernet * fields that take part of the hash) for a specific protocol. * To flush the hash control to the device, the caller should call * ena_com_set_hash_ctrl. * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_fill_hash_ctrl(struct ena_com_dev *ena_dev, enum ena_admin_flow_hash_proto proto,
u16 hash_fields);
/* ena_com_set_hash_ctrl - Flush the hash control resources to the device. * @ena_dev: ENA communication layer struct * * Flush the hash control (the ethernet fields that take part of the hash) * * @note: Prior to this method the caller should call ena_com_fill_hash_ctrl. * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_set_hash_ctrl(struct ena_com_dev *ena_dev);
/* ena_com_get_hash_ctrl - Retrieve the hash control from the device. * @ena_dev: ENA communication layer struct * @proto: The protocol to retrieve. * @fields: bit mask of ena_admin_flow_hash_fields. * * Retrieve the hash control from the device. * * @note: If the caller called ena_com_fill_hash_ctrl but didn't flush * it to the device, the new configuration will be lost. * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_get_hash_ctrl(struct ena_com_dev *ena_dev, enum ena_admin_flow_hash_proto proto,
u16 *fields);
/* ena_com_set_default_hash_ctrl - Set the hash control to a default * configuration. * @ena_dev: ENA communication layer struct * * Fill the ena_dev resources with the default hash control configuration. * To flush the hash control to the device, the caller should call * ena_com_set_hash_ctrl. * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_set_default_hash_ctrl(struct ena_com_dev *ena_dev);
/* ena_com_indirect_table_fill_entry - Fill a single entry in the RSS * indirection table * @ena_dev: ENA communication layer struct. * @entry_idx - indirection table entry. * @entry_value - redirection value * * Fill a single entry of the RSS indirection table in the ena_dev resources. * To flush the indirection table to the device, the called should call * ena_com_indirect_table_set. * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_indirect_table_fill_entry(struct ena_com_dev *ena_dev,
u16 entry_idx, u16 entry_value);
/* ena_com_indirect_table_set - Flush the indirection table to the device. * @ena_dev: ENA communication layer struct * * Flush the indirection hash control to the device. * Prior to this method the caller should call ena_com_indirect_table_fill_entry * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_indirect_table_set(struct ena_com_dev *ena_dev);
/* ena_com_indirect_table_get - Retrieve the indirection table from the device. * @ena_dev: ENA communication layer struct * @ind_tbl: indirection table * * Retrieve the RSS indirection table from the device. * * @note: If the caller called ena_com_indirect_table_fill_entry but didn't flush * it to the device, the new configuration will be lost. * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_indirect_table_get(struct ena_com_dev *ena_dev, u32 *ind_tbl);
/* ena_com_allocate_host_info - Allocate host info resources. * @ena_dev: ENA communication layer struct * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_allocate_host_info(struct ena_com_dev *ena_dev);
/* ena_com_allocate_debug_area - Allocate debug area. * @ena_dev: ENA communication layer struct * @debug_area_size - debug area size. * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_allocate_debug_area(struct ena_com_dev *ena_dev,
u32 debug_area_size);
/* ena_com_allocate_customer_metrics_buffer - Allocate customer metrics resources. * @ena_dev: ENA communication layer struct * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_allocate_customer_metrics_buffer(struct ena_com_dev *ena_dev);
/* ena_com_delete_debug_area - Free the debug area resources. * @ena_dev: ENA communication layer struct * * Free the allocated debug area.
*/ void ena_com_delete_debug_area(struct ena_com_dev *ena_dev);
/* ena_com_delete_host_info - Free the host info resources. * @ena_dev: ENA communication layer struct * * Free the allocated host info.
*/ void ena_com_delete_host_info(struct ena_com_dev *ena_dev);
/* ena_com_delete_customer_metrics_buffer - Free the customer metrics resources. * @ena_dev: ENA communication layer struct * * Free the allocated customer metrics area.
*/ void ena_com_delete_customer_metrics_buffer(struct ena_com_dev *ena_dev);
/* ena_com_set_host_attributes - Update the device with the host * attributes (debug area and host info) base address. * @ena_dev: ENA communication layer struct * * @return: 0 on Success and negative value otherwise.
*/ int ena_com_set_host_attributes(struct ena_com_dev *ena_dev);
/* ena_com_create_io_cq - Create io completion queue. * @ena_dev: ENA communication layer struct * @io_cq - io completion queue handler
* Create IO completion queue. * * @return - 0 on success, negative value on failure.
*/ int ena_com_create_io_cq(struct ena_com_dev *ena_dev, struct ena_com_io_cq *io_cq);
/* ena_com_destroy_io_cq - Destroy io completion queue. * @ena_dev: ENA communication layer struct * @io_cq - io completion queue handler
* Destroy IO completion queue. * * @return - 0 on success, negative value on failure.
*/ int ena_com_destroy_io_cq(struct ena_com_dev *ena_dev, struct ena_com_io_cq *io_cq);
* Submit an admin command and then wait until the device returns a * completion. * The completion will be copied into cmd_comp. * * @return - 0 on success, negative value on failure.
*/ int ena_com_execute_admin_command(struct ena_com_admin_queue *admin_queue, struct ena_admin_aq_entry *cmd,
size_t cmd_size, struct ena_admin_acq_entry *cmd_comp,
size_t cmd_comp_size);
/* ena_com_init_interrupt_moderation - Init interrupt moderation * @ena_dev: ENA communication layer struct * * @return - 0 on success, negative value on failure.
*/ int ena_com_init_interrupt_moderation(struct ena_com_dev *ena_dev);
/* ena_com_interrupt_moderation_supported - Return if interrupt moderation * capability is supported by the device. * * @return - supported or not.
*/ bool ena_com_interrupt_moderation_supported(struct ena_com_dev *ena_dev);
/* ena_com_update_nonadaptive_moderation_interval_tx - Update the * non-adaptive interval in Tx direction. * @ena_dev: ENA communication layer struct * @tx_coalesce_usecs: Interval in usec. * * @return - 0 on success, negative value on failure.
*/ int ena_com_update_nonadaptive_moderation_interval_tx(struct ena_com_dev *ena_dev,
u32 tx_coalesce_usecs);
/* ena_com_update_nonadaptive_moderation_interval_rx - Update the * non-adaptive interval in Rx direction. * @ena_dev: ENA communication layer struct * @rx_coalesce_usecs: Interval in usec. * * @return - 0 on success, negative value on failure.
*/ int ena_com_update_nonadaptive_moderation_interval_rx(struct ena_com_dev *ena_dev,
u32 rx_coalesce_usecs);
/* ena_com_get_nonadaptive_moderation_interval_tx - Retrieve the * non-adaptive interval in Tx direction. * @ena_dev: ENA communication layer struct * * @return - interval in usec
*/ unsignedint ena_com_get_nonadaptive_moderation_interval_tx(struct ena_com_dev *ena_dev);
/* ena_com_get_nonadaptive_moderation_interval_rx - Retrieve the * non-adaptive interval in Rx direction. * @ena_dev: ENA communication layer struct * * @return - interval in usec
*/ unsignedint ena_com_get_nonadaptive_moderation_interval_rx(struct ena_com_dev *ena_dev);
/* ena_com_config_dev_mode - Configure the placement policy of the device. * @ena_dev: ENA communication layer struct * @llq_features: LLQ feature descriptor, retrieve via * ena_com_get_dev_attr_feat. * @ena_llq_config: The default driver LLQ parameters configurations
*/ int ena_com_config_dev_mode(struct ena_com_dev *ena_dev, struct ena_admin_feature_llq_desc *llq_features, struct ena_llq_configurations *llq_default_config);
/* ena_com_get_cap - query whether device supports a capability. * @ena_dev: ENA communication layer struct * @cap_id: enum value representing the capability * * @return - true if capability is supported or false otherwise
*/ staticinlinebool ena_com_get_cap(struct ena_com_dev *ena_dev, enum ena_admin_aq_caps_id cap_id)
{ return !!(ena_dev->capabilities & BIT(cap_id));
}
/* ena_com_get_customer_metric_support - query whether device supports a given customer metric. * @ena_dev: ENA communication layer struct * @metric_id: enum value representing the customer metric * * @return - true if customer metric is supported or false otherwise
*/ staticinlinebool ena_com_get_customer_metric_support(struct ena_com_dev *ena_dev, enum ena_admin_customer_metrics_id metric_id)
{ return !!(ena_dev->customer_metrics.supported_metrics & BIT(metric_id));
}
/* ena_com_get_customer_metric_count - return the number of supported customer metrics. * @ena_dev: ENA communication layer struct * * @return - the number of supported customer metrics
*/ staticinlineint ena_com_get_customer_metric_count(struct ena_com_dev *ena_dev)
{ return hweight64(ena_dev->customer_metrics.supported_metrics);
}
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