diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/nic.h')
| -rw-r--r-- | drivers/net/ethernet/sfc/nic.h | 256 |
1 files changed, 143 insertions, 113 deletions
diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h index 890bbbe8320e..11b6112d9249 100644 --- a/drivers/net/ethernet/sfc/nic.h +++ b/drivers/net/ethernet/sfc/nic.h @@ -30,7 +30,7 @@ static inline int efx_nic_rev(struct efx_nic *efx) return efx->type->revision; } -extern u32 efx_farch_fpga_ver(struct efx_nic *efx); +u32 efx_farch_fpga_ver(struct efx_nic *efx); /* NIC has two interlinked PCI functions for the same port. */ static inline bool efx_nic_is_dual_func(struct efx_nic *efx) @@ -71,6 +71,26 @@ efx_tx_desc(struct efx_tx_queue *tx_queue, unsigned int index) return ((efx_qword_t *) (tx_queue->txd.buf.addr)) + index; } +/* Report whether the NIC considers this TX queue empty, given the + * write_count used for the last doorbell push. 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 = ACCESS_ONCE(tx_queue->empty_read_count); + + if (empty_read_count == 0) + return false; + + return ((empty_read_count ^ write_count) & ~EFX_EMPTY_COUNT_VALID) == 0; +} + +static inline bool efx_nic_tx_is_empty(struct efx_tx_queue *tx_queue) +{ + return __efx_nic_tx_is_empty(tx_queue, tx_queue->write_count); +} + /* 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, @@ -80,14 +100,10 @@ efx_tx_desc(struct efx_tx_queue *tx_queue, unsigned int index) static inline bool efx_nic_may_push_tx_desc(struct efx_tx_queue *tx_queue, unsigned int write_count) { - unsigned empty_read_count = ACCESS_ONCE(tx_queue->empty_read_count); - - if (empty_read_count == 0) - return false; + bool was_empty = __efx_nic_tx_is_empty(tx_queue, write_count); tx_queue->empty_read_count = 0; - return ((empty_read_count ^ write_count) & ~EFX_EMPTY_COUNT_VALID) == 0 - && tx_queue->write_count - write_count == 1; + return was_empty && tx_queue->write_count - write_count == 1; } /* Returns a pointer to the specified descriptor in the RX descriptor queue */ @@ -401,6 +417,12 @@ enum { 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 @@ -409,6 +431,13 @@ enum { * @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_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 + * @must_restore_piobufs: Flag: PIO buffers have yet to be restored after MC + * reboot * @rx_rss_context: Firmware handle for our RSS context * @stats: Hardware statistics * @workaround_35388: Flag: firmware supports workaround for bug 35388 @@ -424,6 +453,11 @@ struct efx_ef10_nic_data { unsigned int n_allocated_vis; bool must_realloc_vis; 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]; + bool must_restore_piobufs; u32 rx_rss_context; u64 stats[EF10_STAT_COUNT]; bool workaround_35388; @@ -475,18 +509,18 @@ static inline unsigned int efx_vf_size(struct efx_nic *efx) return 1 << efx->vi_scale; } -extern int efx_init_sriov(void); -extern void efx_sriov_probe(struct efx_nic *efx); -extern int efx_sriov_init(struct efx_nic *efx); -extern void efx_sriov_mac_address_changed(struct efx_nic *efx); -extern void efx_sriov_tx_flush_done(struct efx_nic *efx, efx_qword_t *event); -extern void efx_sriov_rx_flush_done(struct efx_nic *efx, efx_qword_t *event); -extern void efx_sriov_event(struct efx_channel *channel, efx_qword_t *event); -extern void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq); -extern void efx_sriov_flr(struct efx_nic *efx, unsigned flr); -extern void efx_sriov_reset(struct efx_nic *efx); -extern void efx_sriov_fini(struct efx_nic *efx); -extern void efx_fini_sriov(void); +int efx_init_sriov(void); +void efx_sriov_probe(struct efx_nic *efx); +int efx_sriov_init(struct efx_nic *efx); +void efx_sriov_mac_address_changed(struct efx_nic *efx); +void efx_sriov_tx_flush_done(struct efx_nic *efx, efx_qword_t *event); +void efx_sriov_rx_flush_done(struct efx_nic *efx, efx_qword_t *event); +void efx_sriov_event(struct efx_channel *channel, efx_qword_t *event); +void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq); +void efx_sriov_flr(struct efx_nic *efx, unsigned flr); +void efx_sriov_reset(struct efx_nic *efx); +void efx_sriov_fini(struct efx_nic *efx); +void efx_fini_sriov(void); #else @@ -512,22 +546,20 @@ static inline void efx_fini_sriov(void) {} #endif -extern int efx_sriov_set_vf_mac(struct net_device *dev, int vf, u8 *mac); -extern int efx_sriov_set_vf_vlan(struct net_device *dev, int vf, - u16 vlan, u8 qos); -extern int efx_sriov_get_vf_config(struct net_device *dev, int vf, - struct ifla_vf_info *ivf); -extern int efx_sriov_set_vf_spoofchk(struct net_device *net_dev, int vf, - bool spoofchk); +int efx_sriov_set_vf_mac(struct net_device *dev, int vf, u8 *mac); +int efx_sriov_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos); +int efx_sriov_get_vf_config(struct net_device *dev, int vf, + struct ifla_vf_info *ivf); +int efx_sriov_set_vf_spoofchk(struct net_device *net_dev, int vf, + bool spoofchk); struct ethtool_ts_info; -extern void efx_ptp_probe(struct efx_nic *efx); -extern int efx_ptp_ioctl(struct efx_nic *efx, struct ifreq *ifr, int cmd); -extern void efx_ptp_get_ts_info(struct efx_nic *efx, - struct ethtool_ts_info *ts_info); -extern bool efx_ptp_is_ptp_tx(struct efx_nic *efx, struct sk_buff *skb); -extern int efx_ptp_tx(struct efx_nic *efx, struct sk_buff *skb); -extern void efx_ptp_event(struct efx_nic *efx, efx_qword_t *ev); +void efx_ptp_probe(struct efx_nic *efx); +int efx_ptp_ioctl(struct efx_nic *efx, struct ifreq *ifr, int cmd); +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_tx(struct efx_nic *efx, struct sk_buff *skb); +void efx_ptp_event(struct efx_nic *efx, efx_qword_t *ev); extern const struct efx_nic_type falcon_a1_nic_type; extern const struct efx_nic_type falcon_b0_nic_type; @@ -541,7 +573,7 @@ extern const struct efx_nic_type efx_hunt_a0_nic_type; ************************************************************************** */ -extern int falcon_probe_board(struct efx_nic *efx, u16 revision_info); +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) @@ -609,58 +641,58 @@ static inline void efx_nic_eventq_read_ack(struct efx_channel *channel) { channel->efx->type->ev_read_ack(channel); } -extern void efx_nic_event_test_start(struct efx_channel *channel); +void efx_nic_event_test_start(struct efx_channel *channel); /* Falcon/Siena queue operations */ -extern int efx_farch_tx_probe(struct efx_tx_queue *tx_queue); -extern void efx_farch_tx_init(struct efx_tx_queue *tx_queue); -extern void efx_farch_tx_fini(struct efx_tx_queue *tx_queue); -extern void efx_farch_tx_remove(struct efx_tx_queue *tx_queue); -extern void efx_farch_tx_write(struct efx_tx_queue *tx_queue); -extern int efx_farch_rx_probe(struct efx_rx_queue *rx_queue); -extern void efx_farch_rx_init(struct efx_rx_queue *rx_queue); -extern void efx_farch_rx_fini(struct efx_rx_queue *rx_queue); -extern void efx_farch_rx_remove(struct efx_rx_queue *rx_queue); -extern void efx_farch_rx_write(struct efx_rx_queue *rx_queue); -extern void efx_farch_rx_defer_refill(struct efx_rx_queue *rx_queue); -extern int efx_farch_ev_probe(struct efx_channel *channel); -extern int efx_farch_ev_init(struct efx_channel *channel); -extern void efx_farch_ev_fini(struct efx_channel *channel); -extern void efx_farch_ev_remove(struct efx_channel *channel); -extern int efx_farch_ev_process(struct efx_channel *channel, int quota); -extern void efx_farch_ev_read_ack(struct efx_channel *channel); -extern void efx_farch_ev_test_generate(struct efx_channel *channel); +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); +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 */ -extern int efx_farch_filter_table_probe(struct efx_nic *efx); -extern void efx_farch_filter_table_restore(struct efx_nic *efx); -extern void efx_farch_filter_table_remove(struct efx_nic *efx); -extern void efx_farch_filter_update_rx_scatter(struct efx_nic *efx); -extern s32 efx_farch_filter_insert(struct efx_nic *efx, - struct efx_filter_spec *spec, bool replace); -extern int efx_farch_filter_remove_safe(struct efx_nic *efx, - enum efx_filter_priority priority, - u32 filter_id); -extern int efx_farch_filter_get_safe(struct efx_nic *efx, - enum efx_filter_priority priority, - u32 filter_id, struct efx_filter_spec *); -extern void efx_farch_filter_clear_rx(struct efx_nic *efx, - enum efx_filter_priority priority); -extern u32 efx_farch_filter_count_rx_used(struct efx_nic *efx, - enum efx_filter_priority priority); -extern u32 efx_farch_filter_get_rx_id_limit(struct efx_nic *efx); -extern s32 efx_farch_filter_get_rx_ids(struct efx_nic *efx, - enum efx_filter_priority priority, - u32 *buf, u32 size); +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 *); +void 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 -extern s32 efx_farch_filter_rfs_insert(struct efx_nic *efx, - struct efx_filter_spec *spec); -extern bool efx_farch_filter_rfs_expire_one(struct efx_nic *efx, u32 flow_id, - unsigned int index); +s32 efx_farch_filter_rfs_insert(struct efx_nic *efx, + struct efx_filter_spec *spec); +bool efx_farch_filter_rfs_expire_one(struct efx_nic *efx, u32 flow_id, + unsigned int index); #endif -extern void efx_farch_filter_sync_rx_mode(struct efx_nic *efx); +void efx_farch_filter_sync_rx_mode(struct efx_nic *efx); -extern bool efx_nic_event_present(struct efx_channel *channel); +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 @@ -681,17 +713,17 @@ static inline void efx_update_diff_stat(u64 *stat, u64 diff) } /* Interrupts */ -extern int efx_nic_init_interrupt(struct efx_nic *efx); -extern void efx_nic_irq_test_start(struct efx_nic *efx); -extern void efx_nic_fini_interrupt(struct efx_nic *efx); +int efx_nic_init_interrupt(struct efx_nic *efx); +void efx_nic_irq_test_start(struct efx_nic *efx); +void efx_nic_fini_interrupt(struct efx_nic *efx); /* Falcon/Siena interrupts */ -extern void efx_farch_irq_enable_master(struct efx_nic *efx); -extern void efx_farch_irq_test_generate(struct efx_nic *efx); -extern void efx_farch_irq_disable_master(struct efx_nic *efx); -extern irqreturn_t efx_farch_msi_interrupt(int irq, void *dev_id); -extern irqreturn_t efx_farch_legacy_interrupt(int irq, void *dev_id); -extern irqreturn_t efx_farch_fatal_interrupt(struct efx_nic *efx); +void efx_farch_irq_enable_master(struct efx_nic *efx); +void 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) { @@ -703,21 +735,21 @@ static inline int efx_nic_irq_test_irq_cpu(struct efx_nic *efx) } /* Global Resources */ -extern int efx_nic_flush_queues(struct efx_nic *efx); -extern void siena_prepare_flush(struct efx_nic *efx); -extern int efx_farch_fini_dmaq(struct efx_nic *efx); -extern void siena_finish_flush(struct efx_nic *efx); -extern void falcon_start_nic_stats(struct efx_nic *efx); -extern void falcon_stop_nic_stats(struct efx_nic *efx); -extern int falcon_reset_xaui(struct efx_nic *efx); -extern void efx_farch_dimension_resources(struct efx_nic *efx, unsigned sram_lim_qw); -extern void efx_farch_init_common(struct efx_nic *efx); -extern void efx_ef10_handle_drain_event(struct efx_nic *efx); +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 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); static inline void efx_nic_push_rx_indir_table(struct efx_nic *efx) { efx->type->rx_push_indir_table(efx); } -extern void efx_farch_rx_push_indir_table(struct efx_nic *efx); +void efx_farch_rx_push_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); @@ -728,24 +760,22 @@ struct efx_farch_register_test { unsigned address; efx_oword_t mask; }; -extern int efx_farch_test_registers(struct efx_nic *efx, - const struct efx_farch_register_test *regs, - size_t n_regs); +int efx_farch_test_registers(struct efx_nic *efx, + const struct efx_farch_register_test *regs, + size_t n_regs); -extern size_t efx_nic_get_regs_len(struct efx_nic *efx); -extern void efx_nic_get_regs(struct efx_nic *efx, void *buf); +size_t efx_nic_get_regs_len(struct efx_nic *efx); +void efx_nic_get_regs(struct efx_nic *efx, void *buf); -extern size_t -efx_nic_describe_stats(const struct efx_hw_stat_desc *desc, size_t count, - const unsigned long *mask, u8 *names); -extern 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); +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); #define EFX_MAX_FLUSH_TIME 5000 -extern void efx_farch_generate_event(struct efx_nic *efx, unsigned int evq, - efx_qword_t *event); +void efx_farch_generate_event(struct efx_nic *efx, unsigned int evq, + efx_qword_t *event); #endif /* EFX_NIC_H */ |