| /**************************************************************************** |
| * Driver for Solarflare network controllers and boards |
| * Copyright 2005-2006 Fen Systems Ltd. |
| * Copyright 2006-2013 Solarflare Communications Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 as published |
| * by the Free Software Foundation, incorporated herein by reference. |
| */ |
| |
| #ifndef EFX_NIC_H |
| #define EFX_NIC_H |
| |
| #include <linux/net_tstamp.h> |
| #include <linux/i2c-algo-bit.h> |
| #include "net_driver.h" |
| #include "efx.h" |
| #include "mcdi.h" |
| |
| enum { |
| /* Revisions 0-2 were Falcon A0, A1 and B0 respectively. |
| * They are not supported by this driver but these revision numbers |
| * form part of the ethtool API for register dumping. |
| */ |
| EFX_REV_SIENA_A0 = 3, |
| EFX_REV_HUNT_A0 = 4, |
| }; |
| |
| static inline int efx_nic_rev(struct efx_nic *efx) |
| { |
| return efx->type->revision; |
| } |
| |
| u32 efx_farch_fpga_ver(struct efx_nic *efx); |
| |
| /* Read the current event from the event queue */ |
| static inline efx_qword_t *efx_event(struct efx_channel *channel, |
| unsigned int index) |
| { |
| return ((efx_qword_t *) (channel->eventq.buf.addr)) + |
| (index & channel->eventq_mask); |
| } |
| |
| /* See if an event is present |
| * |
| * We check both the high and low dword of the event for all ones. We |
| * wrote all ones when we cleared the event, and no valid event can |
| * have all ones in either its high or low dwords. This approach is |
| * robust against reordering. |
| * |
| * Note that using a single 64-bit comparison is incorrect; even |
| * though the CPU read will be atomic, the DMA write may not be. |
| */ |
| static inline int efx_event_present(efx_qword_t *event) |
| { |
| return !(EFX_DWORD_IS_ALL_ONES(event->dword[0]) | |
| EFX_DWORD_IS_ALL_ONES(event->dword[1])); |
| } |
| |
| /* Returns a pointer to the specified transmit descriptor in the TX |
| * descriptor queue belonging to the specified channel. |
| */ |
| static inline efx_qword_t * |
| efx_tx_desc(struct efx_tx_queue *tx_queue, unsigned int index) |
| { |
| return ((efx_qword_t *) (tx_queue->txd.buf.addr)) + index; |
| } |
| |
| /* Get partner of a TX queue, seen as part of the same net core queue */ |
| static struct efx_tx_queue *efx_tx_queue_partner(struct efx_tx_queue *tx_queue) |
| { |
| if (tx_queue->queue & EFX_TXQ_TYPE_OFFLOAD) |
| return tx_queue - EFX_TXQ_TYPE_OFFLOAD; |
| else |
| return tx_queue + EFX_TXQ_TYPE_OFFLOAD; |
| } |
| |
| /* Report whether this TX queue would be empty for the given write_count. |
| * May return false negative. |
| */ |
| static inline bool __efx_nic_tx_is_empty(struct efx_tx_queue *tx_queue, |
| unsigned int write_count) |
| { |
| unsigned int empty_read_count = READ_ONCE(tx_queue->empty_read_count); |
| |
| if (empty_read_count == 0) |
| return false; |
| |
| return ((empty_read_count ^ write_count) & ~EFX_EMPTY_COUNT_VALID) == 0; |
| } |
| |
| /* Report whether the NIC considers this TX queue empty, using |
| * packet_write_count (the write count recorded for the last completable |
| * doorbell push). May return false negative. EF10 only, which is OK |
| * because only EF10 supports PIO. |
| */ |
| static inline bool efx_nic_tx_is_empty(struct efx_tx_queue *tx_queue) |
| { |
| EFX_WARN_ON_ONCE_PARANOID(!tx_queue->efx->type->option_descriptors); |
| return __efx_nic_tx_is_empty(tx_queue, tx_queue->packet_write_count); |
| } |
| |
| /* Decide whether we can use TX PIO, ie. write packet data directly into |
| * a buffer on the device. This can reduce latency at the expense of |
| * throughput, so we only do this if both hardware and software TX rings |
| * are empty. This also ensures that only one packet at a time can be |
| * using the PIO buffer. |
| */ |
| static inline bool efx_nic_may_tx_pio(struct efx_tx_queue *tx_queue) |
| { |
| struct efx_tx_queue *partner = efx_tx_queue_partner(tx_queue); |
| |
| return tx_queue->piobuf && efx_nic_tx_is_empty(tx_queue) && |
| efx_nic_tx_is_empty(partner); |
| } |
| |
| /* Decide whether to push a TX descriptor to the NIC vs merely writing |
| * the doorbell. This can reduce latency when we are adding a single |
| * descriptor to an empty queue, but is otherwise pointless. Further, |
| * Falcon and Siena have hardware bugs (SF bug 33851) that may be |
| * triggered if we don't check this. |
| * We use the write_count used for the last doorbell push, to get the |
| * NIC's view of the tx queue. |
| */ |
| static inline bool efx_nic_may_push_tx_desc(struct efx_tx_queue *tx_queue, |
| unsigned int write_count) |
| { |
| bool was_empty = __efx_nic_tx_is_empty(tx_queue, write_count); |
| |
| tx_queue->empty_read_count = 0; |
| return was_empty && tx_queue->write_count - write_count == 1; |
| } |
| |
| /* Returns a pointer to the specified descriptor in the RX descriptor queue */ |
| static inline efx_qword_t * |
| efx_rx_desc(struct efx_rx_queue *rx_queue, unsigned int index) |
| { |
| return ((efx_qword_t *) (rx_queue->rxd.buf.addr)) + index; |
| } |
| |
| enum { |
| PHY_TYPE_NONE = 0, |
| PHY_TYPE_TXC43128 = 1, |
| PHY_TYPE_88E1111 = 2, |
| PHY_TYPE_SFX7101 = 3, |
| PHY_TYPE_QT2022C2 = 4, |
| PHY_TYPE_PM8358 = 6, |
| PHY_TYPE_SFT9001A = 8, |
| PHY_TYPE_QT2025C = 9, |
| PHY_TYPE_SFT9001B = 10, |
| }; |
| |
| /* Alignment of PCIe DMA boundaries (4KB) */ |
| #define EFX_PAGE_SIZE 4096 |
| /* Size and alignment of buffer table entries (same) */ |
| #define EFX_BUF_SIZE EFX_PAGE_SIZE |
| |
| /* NIC-generic software stats */ |
| enum { |
| GENERIC_STAT_rx_noskb_drops, |
| GENERIC_STAT_rx_nodesc_trunc, |
| GENERIC_STAT_COUNT |
| }; |
| |
| enum { |
| SIENA_STAT_tx_bytes = GENERIC_STAT_COUNT, |
| SIENA_STAT_tx_good_bytes, |
| SIENA_STAT_tx_bad_bytes, |
| SIENA_STAT_tx_packets, |
| SIENA_STAT_tx_bad, |
| SIENA_STAT_tx_pause, |
| SIENA_STAT_tx_control, |
| SIENA_STAT_tx_unicast, |
| SIENA_STAT_tx_multicast, |
| SIENA_STAT_tx_broadcast, |
| SIENA_STAT_tx_lt64, |
| SIENA_STAT_tx_64, |
| SIENA_STAT_tx_65_to_127, |
| SIENA_STAT_tx_128_to_255, |
| SIENA_STAT_tx_256_to_511, |
| SIENA_STAT_tx_512_to_1023, |
| SIENA_STAT_tx_1024_to_15xx, |
| SIENA_STAT_tx_15xx_to_jumbo, |
| SIENA_STAT_tx_gtjumbo, |
| SIENA_STAT_tx_collision, |
| SIENA_STAT_tx_single_collision, |
| SIENA_STAT_tx_multiple_collision, |
| SIENA_STAT_tx_excessive_collision, |
| SIENA_STAT_tx_deferred, |
| SIENA_STAT_tx_late_collision, |
| SIENA_STAT_tx_excessive_deferred, |
| SIENA_STAT_tx_non_tcpudp, |
| SIENA_STAT_tx_mac_src_error, |
| SIENA_STAT_tx_ip_src_error, |
| SIENA_STAT_rx_bytes, |
| SIENA_STAT_rx_good_bytes, |
| SIENA_STAT_rx_bad_bytes, |
| SIENA_STAT_rx_packets, |
| SIENA_STAT_rx_good, |
| SIENA_STAT_rx_bad, |
| SIENA_STAT_rx_pause, |
| SIENA_STAT_rx_control, |
| SIENA_STAT_rx_unicast, |
| SIENA_STAT_rx_multicast, |
| SIENA_STAT_rx_broadcast, |
| SIENA_STAT_rx_lt64, |
| SIENA_STAT_rx_64, |
| SIENA_STAT_rx_65_to_127, |
| SIENA_STAT_rx_128_to_255, |
| SIENA_STAT_rx_256_to_511, |
| SIENA_STAT_rx_512_to_1023, |
| SIENA_STAT_rx_1024_to_15xx, |
| SIENA_STAT_rx_15xx_to_jumbo, |
| SIENA_STAT_rx_gtjumbo, |
| SIENA_STAT_rx_bad_gtjumbo, |
| SIENA_STAT_rx_overflow, |
| SIENA_STAT_rx_false_carrier, |
| SIENA_STAT_rx_symbol_error, |
| SIENA_STAT_rx_align_error, |
| SIENA_STAT_rx_length_error, |
| SIENA_STAT_rx_internal_error, |
| SIENA_STAT_rx_nodesc_drop_cnt, |
| SIENA_STAT_COUNT |
| }; |
| |
| /** |
| * struct siena_nic_data - Siena NIC state |
| * @efx: Pointer back to main interface structure |
| * @wol_filter_id: Wake-on-LAN packet filter id |
| * @stats: Hardware statistics |
| * @vf: Array of &struct siena_vf objects |
| * @vf_buftbl_base: The zeroth buffer table index used to back VF queues. |
| * @vfdi_status: Common VFDI status page to be dmad to VF address space. |
| * @local_addr_list: List of local addresses. Protected by %local_lock. |
| * @local_page_list: List of DMA addressable pages used to broadcast |
| * %local_addr_list. Protected by %local_lock. |
| * @local_lock: Mutex protecting %local_addr_list and %local_page_list. |
| * @peer_work: Work item to broadcast peer addresses to VMs. |
| */ |
| struct siena_nic_data { |
| struct efx_nic *efx; |
| int wol_filter_id; |
| u64 stats[SIENA_STAT_COUNT]; |
| #ifdef CONFIG_SFC_SRIOV |
| struct siena_vf *vf; |
| struct efx_channel *vfdi_channel; |
| unsigned vf_buftbl_base; |
| struct efx_buffer vfdi_status; |
| struct list_head local_addr_list; |
| struct list_head local_page_list; |
| struct mutex local_lock; |
| struct work_struct peer_work; |
| #endif |
| }; |
| |
| enum { |
| EF10_STAT_port_tx_bytes = GENERIC_STAT_COUNT, |
| EF10_STAT_port_tx_packets, |
| EF10_STAT_port_tx_pause, |
| EF10_STAT_port_tx_control, |
| EF10_STAT_port_tx_unicast, |
| EF10_STAT_port_tx_multicast, |
| EF10_STAT_port_tx_broadcast, |
| EF10_STAT_port_tx_lt64, |
| EF10_STAT_port_tx_64, |
| EF10_STAT_port_tx_65_to_127, |
| EF10_STAT_port_tx_128_to_255, |
| EF10_STAT_port_tx_256_to_511, |
| EF10_STAT_port_tx_512_to_1023, |
| EF10_STAT_port_tx_1024_to_15xx, |
| EF10_STAT_port_tx_15xx_to_jumbo, |
| EF10_STAT_port_rx_bytes, |
| EF10_STAT_port_rx_bytes_minus_good_bytes, |
| EF10_STAT_port_rx_good_bytes, |
| EF10_STAT_port_rx_bad_bytes, |
| EF10_STAT_port_rx_packets, |
| EF10_STAT_port_rx_good, |
| EF10_STAT_port_rx_bad, |
| EF10_STAT_port_rx_pause, |
| EF10_STAT_port_rx_control, |
| EF10_STAT_port_rx_unicast, |
| EF10_STAT_port_rx_multicast, |
| EF10_STAT_port_rx_broadcast, |
| EF10_STAT_port_rx_lt64, |
| EF10_STAT_port_rx_64, |
| EF10_STAT_port_rx_65_to_127, |
| EF10_STAT_port_rx_128_to_255, |
| EF10_STAT_port_rx_256_to_511, |
| EF10_STAT_port_rx_512_to_1023, |
| EF10_STAT_port_rx_1024_to_15xx, |
| EF10_STAT_port_rx_15xx_to_jumbo, |
| EF10_STAT_port_rx_gtjumbo, |
| EF10_STAT_port_rx_bad_gtjumbo, |
| EF10_STAT_port_rx_overflow, |
| EF10_STAT_port_rx_align_error, |
| EF10_STAT_port_rx_length_error, |
| EF10_STAT_port_rx_nodesc_drops, |
| EF10_STAT_port_rx_pm_trunc_bb_overflow, |
| EF10_STAT_port_rx_pm_discard_bb_overflow, |
| EF10_STAT_port_rx_pm_trunc_vfifo_full, |
| EF10_STAT_port_rx_pm_discard_vfifo_full, |
| EF10_STAT_port_rx_pm_trunc_qbb, |
| EF10_STAT_port_rx_pm_discard_qbb, |
| EF10_STAT_port_rx_pm_discard_mapping, |
| EF10_STAT_port_rx_dp_q_disabled_packets, |
| EF10_STAT_port_rx_dp_di_dropped_packets, |
| EF10_STAT_port_rx_dp_streaming_packets, |
| EF10_STAT_port_rx_dp_hlb_fetch, |
| EF10_STAT_port_rx_dp_hlb_wait, |
| EF10_STAT_rx_unicast, |
| EF10_STAT_rx_unicast_bytes, |
| EF10_STAT_rx_multicast, |
| EF10_STAT_rx_multicast_bytes, |
| EF10_STAT_rx_broadcast, |
| EF10_STAT_rx_broadcast_bytes, |
| EF10_STAT_rx_bad, |
| EF10_STAT_rx_bad_bytes, |
| EF10_STAT_rx_overflow, |
| EF10_STAT_tx_unicast, |
| EF10_STAT_tx_unicast_bytes, |
| EF10_STAT_tx_multicast, |
| EF10_STAT_tx_multicast_bytes, |
| EF10_STAT_tx_broadcast, |
| EF10_STAT_tx_broadcast_bytes, |
| EF10_STAT_tx_bad, |
| EF10_STAT_tx_bad_bytes, |
| EF10_STAT_tx_overflow, |
| EF10_STAT_V1_COUNT, |
| EF10_STAT_fec_uncorrected_errors = EF10_STAT_V1_COUNT, |
| EF10_STAT_fec_corrected_errors, |
| EF10_STAT_fec_corrected_symbols_lane0, |
| EF10_STAT_fec_corrected_symbols_lane1, |
| EF10_STAT_fec_corrected_symbols_lane2, |
| EF10_STAT_fec_corrected_symbols_lane3, |
| EF10_STAT_ctpio_vi_busy_fallback, |
| EF10_STAT_ctpio_long_write_success, |
| EF10_STAT_ctpio_missing_dbell_fail, |
| EF10_STAT_ctpio_overflow_fail, |
| EF10_STAT_ctpio_underflow_fail, |
| EF10_STAT_ctpio_timeout_fail, |
| EF10_STAT_ctpio_noncontig_wr_fail, |
| EF10_STAT_ctpio_frm_clobber_fail, |
| EF10_STAT_ctpio_invalid_wr_fail, |
| EF10_STAT_ctpio_vi_clobber_fallback, |
| EF10_STAT_ctpio_unqualified_fallback, |
| EF10_STAT_ctpio_runt_fallback, |
| EF10_STAT_ctpio_success, |
| EF10_STAT_ctpio_fallback, |
| EF10_STAT_ctpio_poison, |
| EF10_STAT_ctpio_erase, |
| EF10_STAT_COUNT |
| }; |
| |
| /* Maximum number of TX PIO buffers we may allocate to a function. |
| * This matches the total number of buffers on each SFC9100-family |
| * controller. |
| */ |
| #define EF10_TX_PIOBUF_COUNT 16 |
| |
| /** |
| * struct efx_ef10_nic_data - EF10 architecture NIC state |
| * @mcdi_buf: DMA buffer for MCDI |
| * @warm_boot_count: Last seen MC warm boot count |
| * @vi_base: Absolute index of first VI in this function |
| * @n_allocated_vis: Number of VIs allocated to this function |
| * @must_realloc_vis: Flag: VIs have yet to be reallocated after MC reboot |
| * @must_restore_rss_contexts: Flag: RSS contexts have yet to be restored after |
| * MC reboot |
| * @must_restore_filters: Flag: filters have yet to be restored after MC reboot |
| * @n_piobufs: Number of PIO buffers allocated to this function |
| * @wc_membase: Base address of write-combining mapping of the memory BAR |
| * @pio_write_base: Base address for writing PIO buffers |
| * @pio_write_vi_base: Relative VI number for @pio_write_base |
| * @piobuf_handle: Handle of each PIO buffer allocated |
| * @piobuf_size: size of a single PIO buffer |
| * @must_restore_piobufs: Flag: PIO buffers have yet to be restored after MC |
| * reboot |
| * @rx_rss_context_exclusive: Whether our RSS context is exclusive or shared |
| * @stats: Hardware statistics |
| * @workaround_35388: Flag: firmware supports workaround for bug 35388 |
| * @workaround_26807: Flag: firmware supports workaround for bug 26807 |
| * @workaround_61265: Flag: firmware supports workaround for bug 61265 |
| * @must_check_datapath_caps: Flag: @datapath_caps needs to be revalidated |
| * after MC reboot |
| * @datapath_caps: Capabilities of datapath firmware (FLAGS1 field of |
| * %MC_CMD_GET_CAPABILITIES response) |
| * @datapath_caps2: Further Capabilities of datapath firmware (FLAGS2 field of |
| * %MC_CMD_GET_CAPABILITIES response) |
| * @rx_dpcpu_fw_id: Firmware ID of the RxDPCPU |
| * @tx_dpcpu_fw_id: Firmware ID of the TxDPCPU |
| * @vport_id: The function's vport ID, only relevant for PFs |
| * @must_probe_vswitching: Flag: vswitching has yet to be setup after MC reboot |
| * @pf_index: The number for this PF, or the parent PF if this is a VF |
| #ifdef CONFIG_SFC_SRIOV |
| * @vf: Pointer to VF data structure |
| #endif |
| * @vport_mac: The MAC address on the vport, only for PFs; VFs will be zero |
| * @vlan_list: List of VLANs added over the interface. Serialised by vlan_lock. |
| * @vlan_lock: Lock to serialize access to vlan_list. |
| * @udp_tunnels: UDP tunnel port numbers and types. |
| * @udp_tunnels_dirty: flag indicating a reboot occurred while pushing |
| * @udp_tunnels to hardware and thus the push must be re-done. |
| * @udp_tunnels_lock: Serialises writes to @udp_tunnels and @udp_tunnels_dirty. |
| */ |
| struct efx_ef10_nic_data { |
| struct efx_buffer mcdi_buf; |
| u16 warm_boot_count; |
| unsigned int vi_base; |
| unsigned int n_allocated_vis; |
| bool must_realloc_vis; |
| bool must_restore_rss_contexts; |
| bool must_restore_filters; |
| unsigned int n_piobufs; |
| void __iomem *wc_membase, *pio_write_base; |
| unsigned int pio_write_vi_base; |
| unsigned int piobuf_handle[EF10_TX_PIOBUF_COUNT]; |
| u16 piobuf_size; |
| bool must_restore_piobufs; |
| bool rx_rss_context_exclusive; |
| u64 stats[EF10_STAT_COUNT]; |
| bool workaround_35388; |
| bool workaround_26807; |
| bool workaround_61265; |
| bool must_check_datapath_caps; |
| u32 datapath_caps; |
| u32 datapath_caps2; |
| unsigned int rx_dpcpu_fw_id; |
| unsigned int tx_dpcpu_fw_id; |
| unsigned int vport_id; |
| bool must_probe_vswitching; |
| unsigned int pf_index; |
| u8 port_id[ETH_ALEN]; |
| #ifdef CONFIG_SFC_SRIOV |
| unsigned int vf_index; |
| struct ef10_vf *vf; |
| #endif |
| u8 vport_mac[ETH_ALEN]; |
| struct list_head vlan_list; |
| struct mutex vlan_lock; |
| struct efx_udp_tunnel udp_tunnels[16]; |
| bool udp_tunnels_dirty; |
| struct mutex udp_tunnels_lock; |
| u64 licensed_features; |
| }; |
| |
| int efx_init_sriov(void); |
| void efx_fini_sriov(void); |
| |
| struct ethtool_ts_info; |
| int efx_ptp_probe(struct efx_nic *efx, struct efx_channel *channel); |
| void efx_ptp_defer_probe_with_channel(struct efx_nic *efx); |
| struct efx_channel *efx_ptp_channel(struct efx_nic *efx); |
| void efx_ptp_remove(struct efx_nic *efx); |
| int efx_ptp_set_ts_config(struct efx_nic *efx, struct ifreq *ifr); |
| int efx_ptp_get_ts_config(struct efx_nic *efx, struct ifreq *ifr); |
| void efx_ptp_get_ts_info(struct efx_nic *efx, struct ethtool_ts_info *ts_info); |
| bool efx_ptp_is_ptp_tx(struct efx_nic *efx, struct sk_buff *skb); |
| int efx_ptp_get_mode(struct efx_nic *efx); |
| int efx_ptp_change_mode(struct efx_nic *efx, bool enable_wanted, |
| unsigned int new_mode); |
| int efx_ptp_tx(struct efx_nic *efx, struct sk_buff *skb); |
| void efx_ptp_event(struct efx_nic *efx, efx_qword_t *ev); |
| size_t efx_ptp_describe_stats(struct efx_nic *efx, u8 *strings); |
| size_t efx_ptp_update_stats(struct efx_nic *efx, u64 *stats); |
| void efx_time_sync_event(struct efx_channel *channel, efx_qword_t *ev); |
| void __efx_rx_skb_attach_timestamp(struct efx_channel *channel, |
| struct sk_buff *skb); |
| static inline void efx_rx_skb_attach_timestamp(struct efx_channel *channel, |
| struct sk_buff *skb) |
| { |
| if (channel->sync_events_state == SYNC_EVENTS_VALID) |
| __efx_rx_skb_attach_timestamp(channel, skb); |
| } |
| void efx_ptp_start_datapath(struct efx_nic *efx); |
| void efx_ptp_stop_datapath(struct efx_nic *efx); |
| bool efx_ptp_use_mac_tx_timestamps(struct efx_nic *efx); |
| ktime_t efx_ptp_nic_to_kernel_time(struct efx_tx_queue *tx_queue); |
| |
| extern const struct efx_nic_type falcon_a1_nic_type; |
| extern const struct efx_nic_type falcon_b0_nic_type; |
| extern const struct efx_nic_type siena_a0_nic_type; |
| extern const struct efx_nic_type efx_hunt_a0_nic_type; |
| extern const struct efx_nic_type efx_hunt_a0_vf_nic_type; |
| |
| /************************************************************************** |
| * |
| * Externs |
| * |
| ************************************************************************** |
| */ |
| |
| int falcon_probe_board(struct efx_nic *efx, u16 revision_info); |
| |
| /* TX data path */ |
| static inline int efx_nic_probe_tx(struct efx_tx_queue *tx_queue) |
| { |
| return tx_queue->efx->type->tx_probe(tx_queue); |
| } |
| static inline void efx_nic_init_tx(struct efx_tx_queue *tx_queue) |
| { |
| tx_queue->efx->type->tx_init(tx_queue); |
| } |
| static inline void efx_nic_remove_tx(struct efx_tx_queue *tx_queue) |
| { |
| tx_queue->efx->type->tx_remove(tx_queue); |
| } |
| static inline void efx_nic_push_buffers(struct efx_tx_queue *tx_queue) |
| { |
| tx_queue->efx->type->tx_write(tx_queue); |
| } |
| |
| /* RX data path */ |
| static inline int efx_nic_probe_rx(struct efx_rx_queue *rx_queue) |
| { |
| return rx_queue->efx->type->rx_probe(rx_queue); |
| } |
| static inline void efx_nic_init_rx(struct efx_rx_queue *rx_queue) |
| { |
| rx_queue->efx->type->rx_init(rx_queue); |
| } |
| static inline void efx_nic_remove_rx(struct efx_rx_queue *rx_queue) |
| { |
| rx_queue->efx->type->rx_remove(rx_queue); |
| } |
| static inline void efx_nic_notify_rx_desc(struct efx_rx_queue *rx_queue) |
| { |
| rx_queue->efx->type->rx_write(rx_queue); |
| } |
| static inline void efx_nic_generate_fill_event(struct efx_rx_queue *rx_queue) |
| { |
| rx_queue->efx->type->rx_defer_refill(rx_queue); |
| } |
| |
| /* Event data path */ |
| static inline int efx_nic_probe_eventq(struct efx_channel *channel) |
| { |
| return channel->efx->type->ev_probe(channel); |
| } |
| static inline int efx_nic_init_eventq(struct efx_channel *channel) |
| { |
| return channel->efx->type->ev_init(channel); |
| } |
| static inline void efx_nic_fini_eventq(struct efx_channel *channel) |
| { |
| channel->efx->type->ev_fini(channel); |
| } |
| static inline void efx_nic_remove_eventq(struct efx_channel *channel) |
| { |
| channel->efx->type->ev_remove(channel); |
| } |
| static inline int |
| efx_nic_process_eventq(struct efx_channel *channel, int quota) |
| { |
| return channel->efx->type->ev_process(channel, quota); |
| } |
| static inline void efx_nic_eventq_read_ack(struct efx_channel *channel) |
| { |
| channel->efx->type->ev_read_ack(channel); |
| } |
| void efx_nic_event_test_start(struct efx_channel *channel); |
| |
| /* Falcon/Siena queue operations */ |
| int efx_farch_tx_probe(struct efx_tx_queue *tx_queue); |
| void efx_farch_tx_init(struct efx_tx_queue *tx_queue); |
| void efx_farch_tx_fini(struct efx_tx_queue *tx_queue); |
| void efx_farch_tx_remove(struct efx_tx_queue *tx_queue); |
| void efx_farch_tx_write(struct efx_tx_queue *tx_queue); |
| unsigned int efx_farch_tx_limit_len(struct efx_tx_queue *tx_queue, |
| dma_addr_t dma_addr, unsigned int len); |
| int efx_farch_rx_probe(struct efx_rx_queue *rx_queue); |
| void efx_farch_rx_init(struct efx_rx_queue *rx_queue); |
| void efx_farch_rx_fini(struct efx_rx_queue *rx_queue); |
| void efx_farch_rx_remove(struct efx_rx_queue *rx_queue); |
| void efx_farch_rx_write(struct efx_rx_queue *rx_queue); |
| void efx_farch_rx_defer_refill(struct efx_rx_queue *rx_queue); |
| int efx_farch_ev_probe(struct efx_channel *channel); |
| int efx_farch_ev_init(struct efx_channel *channel); |
| void efx_farch_ev_fini(struct efx_channel *channel); |
| void efx_farch_ev_remove(struct efx_channel *channel); |
| int efx_farch_ev_process(struct efx_channel *channel, int quota); |
| void efx_farch_ev_read_ack(struct efx_channel *channel); |
| void efx_farch_ev_test_generate(struct efx_channel *channel); |
| |
| /* Falcon/Siena filter operations */ |
| int efx_farch_filter_table_probe(struct efx_nic *efx); |
| void efx_farch_filter_table_restore(struct efx_nic *efx); |
| void efx_farch_filter_table_remove(struct efx_nic *efx); |
| void efx_farch_filter_update_rx_scatter(struct efx_nic *efx); |
| s32 efx_farch_filter_insert(struct efx_nic *efx, struct efx_filter_spec *spec, |
| bool replace); |
| int efx_farch_filter_remove_safe(struct efx_nic *efx, |
| enum efx_filter_priority priority, |
| u32 filter_id); |
| int efx_farch_filter_get_safe(struct efx_nic *efx, |
| enum efx_filter_priority priority, u32 filter_id, |
| struct efx_filter_spec *); |
| int efx_farch_filter_clear_rx(struct efx_nic *efx, |
| enum efx_filter_priority priority); |
| u32 efx_farch_filter_count_rx_used(struct efx_nic *efx, |
| enum efx_filter_priority priority); |
| u32 efx_farch_filter_get_rx_id_limit(struct efx_nic *efx); |
| s32 efx_farch_filter_get_rx_ids(struct efx_nic *efx, |
| enum efx_filter_priority priority, u32 *buf, |
| u32 size); |
| #ifdef CONFIG_RFS_ACCEL |
| bool efx_farch_filter_rfs_expire_one(struct efx_nic *efx, u32 flow_id, |
| unsigned int index); |
| #endif |
| void efx_farch_filter_sync_rx_mode(struct efx_nic *efx); |
| |
| bool efx_nic_event_present(struct efx_channel *channel); |
| |
| /* Some statistics are computed as A - B where A and B each increase |
| * linearly with some hardware counter(s) and the counters are read |
| * asynchronously. If the counters contributing to B are always read |
| * after those contributing to A, the computed value may be lower than |
| * the true value by some variable amount, and may decrease between |
| * subsequent computations. |
| * |
| * We should never allow statistics to decrease or to exceed the true |
| * value. Since the computed value will never be greater than the |
| * true value, we can achieve this by only storing the computed value |
| * when it increases. |
| */ |
| static inline void efx_update_diff_stat(u64 *stat, u64 diff) |
| { |
| if ((s64)(diff - *stat) > 0) |
| *stat = diff; |
| } |
| |
| /* Interrupts */ |
| int efx_nic_init_interrupt(struct efx_nic *efx); |
| int efx_nic_irq_test_start(struct efx_nic *efx); |
| void efx_nic_fini_interrupt(struct efx_nic *efx); |
| |
| /* Falcon/Siena interrupts */ |
| void efx_farch_irq_enable_master(struct efx_nic *efx); |
| int efx_farch_irq_test_generate(struct efx_nic *efx); |
| void efx_farch_irq_disable_master(struct efx_nic *efx); |
| irqreturn_t efx_farch_msi_interrupt(int irq, void *dev_id); |
| irqreturn_t efx_farch_legacy_interrupt(int irq, void *dev_id); |
| irqreturn_t efx_farch_fatal_interrupt(struct efx_nic *efx); |
| |
| static inline int efx_nic_event_test_irq_cpu(struct efx_channel *channel) |
| { |
| return READ_ONCE(channel->event_test_cpu); |
| } |
| static inline int efx_nic_irq_test_irq_cpu(struct efx_nic *efx) |
| { |
| return READ_ONCE(efx->last_irq_cpu); |
| } |
| |
| /* Global Resources */ |
| int efx_nic_flush_queues(struct efx_nic *efx); |
| void siena_prepare_flush(struct efx_nic *efx); |
| int efx_farch_fini_dmaq(struct efx_nic *efx); |
| void efx_farch_finish_flr(struct efx_nic *efx); |
| void siena_finish_flush(struct efx_nic *efx); |
| void falcon_start_nic_stats(struct efx_nic *efx); |
| void falcon_stop_nic_stats(struct efx_nic *efx); |
| int falcon_reset_xaui(struct efx_nic *efx); |
| void efx_farch_dimension_resources(struct efx_nic *efx, unsigned sram_lim_qw); |
| void efx_farch_init_common(struct efx_nic *efx); |
| void efx_ef10_handle_drain_event(struct efx_nic *efx); |
| void efx_farch_rx_push_indir_table(struct efx_nic *efx); |
| void efx_farch_rx_pull_indir_table(struct efx_nic *efx); |
| |
| int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer, |
| unsigned int len, gfp_t gfp_flags); |
| void efx_nic_free_buffer(struct efx_nic *efx, struct efx_buffer *buffer); |
| |
| /* Tests */ |
| struct efx_farch_register_test { |
| unsigned address; |
| efx_oword_t mask; |
| }; |
| int efx_farch_test_registers(struct efx_nic *efx, |
| const struct efx_farch_register_test *regs, |
| size_t n_regs); |
| |
| size_t efx_nic_get_regs_len(struct efx_nic *efx); |
| void efx_nic_get_regs(struct efx_nic *efx, void *buf); |
| |
| size_t efx_nic_describe_stats(const struct efx_hw_stat_desc *desc, size_t count, |
| const unsigned long *mask, u8 *names); |
| void efx_nic_update_stats(const struct efx_hw_stat_desc *desc, size_t count, |
| const unsigned long *mask, u64 *stats, |
| const void *dma_buf, bool accumulate); |
| void efx_nic_fix_nodesc_drop_stat(struct efx_nic *efx, u64 *stat); |
| |
| #define EFX_MAX_FLUSH_TIME 5000 |
| |
| void efx_farch_generate_event(struct efx_nic *efx, unsigned int evq, |
| efx_qword_t *event); |
| |
| #endif /* EFX_NIC_H */ |
