1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2010 Solarflare Communications Inc.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation, incorporated herein by reference.
14 #include "net_driver.h"
17 /* Solarstorm controllers use BAR 0 for I/O space and BAR 2(&3) for memory */
21 extern int efx_probe_tx_queue(struct efx_tx_queue
*tx_queue
);
22 extern void efx_remove_tx_queue(struct efx_tx_queue
*tx_queue
);
23 extern void efx_init_tx_queue(struct efx_tx_queue
*tx_queue
);
24 extern void efx_init_tx_queue_core_txq(struct efx_tx_queue
*tx_queue
);
25 extern void efx_fini_tx_queue(struct efx_tx_queue
*tx_queue
);
26 extern void efx_release_tx_buffers(struct efx_tx_queue
*tx_queue
);
28 efx_hard_start_xmit(struct sk_buff
*skb
, struct net_device
*net_dev
);
30 efx_enqueue_skb(struct efx_tx_queue
*tx_queue
, struct sk_buff
*skb
);
31 extern void efx_xmit_done(struct efx_tx_queue
*tx_queue
, unsigned int index
);
32 extern int efx_setup_tc(struct net_device
*net_dev
, u8 num_tc
);
33 extern unsigned int efx_tx_max_skb_descs(struct efx_nic
*efx
);
36 extern int efx_probe_rx_queue(struct efx_rx_queue
*rx_queue
);
37 extern void efx_remove_rx_queue(struct efx_rx_queue
*rx_queue
);
38 extern void efx_init_rx_queue(struct efx_rx_queue
*rx_queue
);
39 extern void efx_fini_rx_queue(struct efx_rx_queue
*rx_queue
);
40 extern void efx_rx_strategy(struct efx_channel
*channel
);
41 extern void efx_fast_push_rx_descriptors(struct efx_rx_queue
*rx_queue
);
42 extern void efx_rx_slow_fill(unsigned long context
);
43 extern void __efx_rx_packet(struct efx_channel
*channel
,
44 struct efx_rx_buffer
*rx_buf
);
45 extern void efx_rx_packet(struct efx_rx_queue
*rx_queue
, unsigned int index
,
46 unsigned int len
, u16 flags
);
47 extern void efx_schedule_slow_fill(struct efx_rx_queue
*rx_queue
);
49 #define EFX_MAX_DMAQ_SIZE 4096UL
50 #define EFX_DEFAULT_DMAQ_SIZE 1024UL
51 #define EFX_MIN_DMAQ_SIZE 512UL
53 #define EFX_MAX_EVQ_SIZE 16384UL
54 #define EFX_MIN_EVQ_SIZE 512UL
56 /* Maximum number of TCP segments we support for soft-TSO */
57 #define EFX_TSO_MAX_SEGS 100
59 /* The smallest [rt]xq_entries that the driver supports. RX minimum
60 * is a bit arbitrary. For TX, we must have space for at least 2
63 #define EFX_RXQ_MIN_ENT 128U
64 #define EFX_TXQ_MIN_ENT(efx) (2 * efx_tx_max_skb_descs(efx))
67 extern int efx_probe_filters(struct efx_nic
*efx
);
68 extern void efx_restore_filters(struct efx_nic
*efx
);
69 extern void efx_remove_filters(struct efx_nic
*efx
);
70 extern s32
efx_filter_insert_filter(struct efx_nic
*efx
,
71 struct efx_filter_spec
*spec
,
73 extern int efx_filter_remove_id_safe(struct efx_nic
*efx
,
74 enum efx_filter_priority priority
,
76 extern int efx_filter_get_filter_safe(struct efx_nic
*efx
,
77 enum efx_filter_priority priority
,
78 u32 filter_id
, struct efx_filter_spec
*);
79 extern void efx_filter_clear_rx(struct efx_nic
*efx
,
80 enum efx_filter_priority priority
);
81 extern u32
efx_filter_count_rx_used(struct efx_nic
*efx
,
82 enum efx_filter_priority priority
);
83 extern u32
efx_filter_get_rx_id_limit(struct efx_nic
*efx
);
84 extern s32
efx_filter_get_rx_ids(struct efx_nic
*efx
,
85 enum efx_filter_priority priority
,
87 #ifdef CONFIG_RFS_ACCEL
88 extern int efx_filter_rfs(struct net_device
*net_dev
, const struct sk_buff
*skb
,
89 u16 rxq_index
, u32 flow_id
);
90 extern bool __efx_filter_rfs_expire(struct efx_nic
*efx
, unsigned quota
);
91 static inline void efx_filter_rfs_expire(struct efx_channel
*channel
)
93 if (channel
->rfs_filters_added
>= 60 &&
94 __efx_filter_rfs_expire(channel
->efx
, 100))
95 channel
->rfs_filters_added
-= 60;
97 #define efx_filter_rfs_enabled() 1
99 static inline void efx_filter_rfs_expire(struct efx_channel
*channel
) {}
100 #define efx_filter_rfs_enabled() 0
104 extern int efx_channel_dummy_op_int(struct efx_channel
*channel
);
105 extern void efx_channel_dummy_op_void(struct efx_channel
*channel
);
106 extern void efx_process_channel_now(struct efx_channel
*channel
);
108 efx_realloc_channels(struct efx_nic
*efx
, u32 rxq_entries
, u32 txq_entries
);
111 extern int efx_reconfigure_port(struct efx_nic
*efx
);
112 extern int __efx_reconfigure_port(struct efx_nic
*efx
);
114 /* Ethtool support */
115 extern const struct ethtool_ops efx_ethtool_ops
;
118 extern int efx_reset(struct efx_nic
*efx
, enum reset_type method
);
119 extern void efx_reset_down(struct efx_nic
*efx
, enum reset_type method
);
120 extern int efx_reset_up(struct efx_nic
*efx
, enum reset_type method
, bool ok
);
123 extern void efx_schedule_reset(struct efx_nic
*efx
, enum reset_type type
);
124 extern int efx_init_irq_moderation(struct efx_nic
*efx
, unsigned int tx_usecs
,
125 unsigned int rx_usecs
, bool rx_adaptive
,
126 bool rx_may_override_tx
);
127 extern void efx_get_irq_moderation(struct efx_nic
*efx
, unsigned int *tx_usecs
,
128 unsigned int *rx_usecs
, bool *rx_adaptive
);
130 /* Dummy PHY ops for PHY drivers */
131 extern int efx_port_dummy_op_int(struct efx_nic
*efx
);
132 extern void efx_port_dummy_op_void(struct efx_nic
*efx
);
136 #ifdef CONFIG_SFC_MTD
137 extern int efx_mtd_probe(struct efx_nic
*efx
);
138 extern void efx_mtd_rename(struct efx_nic
*efx
);
139 extern void efx_mtd_remove(struct efx_nic
*efx
);
141 static inline int efx_mtd_probe(struct efx_nic
*efx
) { return 0; }
142 static inline void efx_mtd_rename(struct efx_nic
*efx
) {}
143 static inline void efx_mtd_remove(struct efx_nic
*efx
) {}
146 static inline void efx_schedule_channel(struct efx_channel
*channel
)
148 netif_vdbg(channel
->efx
, intr
, channel
->efx
->net_dev
,
149 "channel %d scheduling NAPI poll on CPU%d\n",
150 channel
->channel
, raw_smp_processor_id());
151 channel
->work_pending
= true;
153 napi_schedule(&channel
->napi_str
);
156 static inline void efx_schedule_channel_irq(struct efx_channel
*channel
)
158 channel
->event_test_cpu
= raw_smp_processor_id();
159 efx_schedule_channel(channel
);
162 extern void efx_link_status_changed(struct efx_nic
*efx
);
163 extern void efx_link_set_advertising(struct efx_nic
*efx
, u32
);
164 extern void efx_link_set_wanted_fc(struct efx_nic
*efx
, u8
);
166 static inline void efx_device_detach_sync(struct efx_nic
*efx
)
168 struct net_device
*dev
= efx
->net_dev
;
170 /* Lock/freeze all TX queues so that we can be sure the
171 * TX scheduler is stopped when we're done and before
172 * netif_device_present() becomes false.
175 netif_device_detach(dev
);
176 netif_tx_unlock(dev
);
179 #endif /* EFX_EFX_H */