1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2010 Solarflare Communications Inc.
5 *
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.
9 */
10
11 #ifndef EFX_EFX_H
12 #define EFX_EFX_H
13
14 #include "net_driver.h"
15 #include "filter.h"
16
17 /* PCI IDs */
18 #define EFX_VENDID_SFC 0x1924
19 #define FALCON_A_P_DEVID 0x0703
20 #define FALCON_A_S_DEVID 0x6703
21 #define FALCON_B_P_DEVID 0x0710
22 #define BETHPAGE_A_P_DEVID 0x0803
23 #define SIENA_A_P_DEVID 0x0813
24
25 /* Solarstorm controllers use BAR 0 for I/O space and BAR 2(&3) for memory */
26 #define EFX_MEM_BAR 2
27
28 /* TX */
29 extern int efx_probe_tx_queue(struct efx_tx_queue *tx_queue);
30 extern void efx_remove_tx_queue(struct efx_tx_queue *tx_queue);
31 extern void efx_init_tx_queue(struct efx_tx_queue *tx_queue);
32 extern void efx_init_tx_queue_core_txq(struct efx_tx_queue *tx_queue);
33 extern void efx_fini_tx_queue(struct efx_tx_queue *tx_queue);
34 extern void efx_release_tx_buffers(struct efx_tx_queue *tx_queue);
35 extern netdev_tx_t
36 efx_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev);
37 extern netdev_tx_t
38 efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb);
39 extern void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index);
40 extern int efx_setup_tc(struct net_device *net_dev, u8 num_tc);
41
42 /* RX */
43 extern int efx_probe_rx_queue(struct efx_rx_queue *rx_queue);
44 extern void efx_remove_rx_queue(struct efx_rx_queue *rx_queue);
45 extern void efx_init_rx_queue(struct efx_rx_queue *rx_queue);
46 extern void efx_fini_rx_queue(struct efx_rx_queue *rx_queue);
47 extern void efx_rx_strategy(struct efx_channel *channel);
48 extern void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue);
49 extern void efx_rx_slow_fill(unsigned long context);
50 extern void __efx_rx_packet(struct efx_channel *channel,
51 struct efx_rx_buffer *rx_buf, bool checksummed);
52 extern void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index,
53 unsigned int len, bool checksummed, bool discard);
54 extern void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue);
55
56 #define EFX_MAX_DMAQ_SIZE 4096UL
57 #define EFX_DEFAULT_DMAQ_SIZE 1024UL
58 #define EFX_MIN_DMAQ_SIZE 512UL
59
60 #define EFX_MAX_EVQ_SIZE 16384UL
61 #define EFX_MIN_EVQ_SIZE 512UL
62
63 /* The smallest [rt]xq_entries that the driver supports. Callers of
64 * efx_wake_queue() assume that they can subsequently send at least one
65 * skb. Falcon/A1 may require up to three descriptors per skb_frag. */
66 #define EFX_MIN_RING_SIZE (roundup_pow_of_two(2 * 3 * MAX_SKB_FRAGS))
67
68 /* Filters */
69 extern int efx_probe_filters(struct efx_nic *efx);
70 extern void efx_restore_filters(struct efx_nic *efx);
71 extern void efx_remove_filters(struct efx_nic *efx);
72 extern int efx_filter_insert_filter(struct efx_nic *efx,
73 struct efx_filter_spec *spec,
74 bool replace);
75 extern int efx_filter_remove_filter(struct efx_nic *efx,
76 struct efx_filter_spec *spec);
77 extern void efx_filter_clear_rx(struct efx_nic *efx,
78 enum efx_filter_priority priority);
79 #ifdef CONFIG_RFS_ACCEL
80 extern int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
81 u16 rxq_index, u32 flow_id);
82 extern bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned quota);
efx_filter_rfs_expire(struct efx_channel * channel)83 static inline void efx_filter_rfs_expire(struct efx_channel *channel)
84 {
85 if (channel->rfs_filters_added >= 60 &&
86 __efx_filter_rfs_expire(channel->efx, 100))
87 channel->rfs_filters_added -= 60;
88 }
89 #define efx_filter_rfs_enabled() 1
90 #else
efx_filter_rfs_expire(struct efx_channel * channel)91 static inline void efx_filter_rfs_expire(struct efx_channel *channel) {}
92 #define efx_filter_rfs_enabled() 0
93 #endif
94
95 /* Channels */
96 extern void efx_process_channel_now(struct efx_channel *channel);
97 extern int
98 efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries);
99
100 /* Ports */
101 extern int efx_reconfigure_port(struct efx_nic *efx);
102 extern int __efx_reconfigure_port(struct efx_nic *efx);
103
104 /* Ethtool support */
105 extern const struct ethtool_ops efx_ethtool_ops;
106
107 /* Reset handling */
108 extern int efx_reset(struct efx_nic *efx, enum reset_type method);
109 extern void efx_reset_down(struct efx_nic *efx, enum reset_type method);
110 extern int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok);
111
112 /* Global */
113 extern void efx_schedule_reset(struct efx_nic *efx, enum reset_type type);
114 extern void efx_init_irq_moderation(struct efx_nic *efx, int tx_usecs,
115 int rx_usecs, bool rx_adaptive);
116
117 /* Dummy PHY ops for PHY drivers */
118 extern int efx_port_dummy_op_int(struct efx_nic *efx);
119 extern void efx_port_dummy_op_void(struct efx_nic *efx);
120
121
122 /* MTD */
123 #ifdef CONFIG_SFC_MTD
124 extern int efx_mtd_probe(struct efx_nic *efx);
125 extern void efx_mtd_rename(struct efx_nic *efx);
126 extern void efx_mtd_remove(struct efx_nic *efx);
127 #else
efx_mtd_probe(struct efx_nic * efx)128 static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; }
efx_mtd_rename(struct efx_nic * efx)129 static inline void efx_mtd_rename(struct efx_nic *efx) {}
efx_mtd_remove(struct efx_nic * efx)130 static inline void efx_mtd_remove(struct efx_nic *efx) {}
131 #endif
132
efx_schedule_channel(struct efx_channel * channel)133 static inline void efx_schedule_channel(struct efx_channel *channel)
134 {
135 netif_vdbg(channel->efx, intr, channel->efx->net_dev,
136 "channel %d scheduling NAPI poll on CPU%d\n",
137 channel->channel, raw_smp_processor_id());
138 channel->work_pending = true;
139
140 napi_schedule(&channel->napi_str);
141 }
142
143 extern void efx_link_status_changed(struct efx_nic *efx);
144 extern void efx_link_set_advertising(struct efx_nic *efx, u32);
145 extern void efx_link_set_wanted_fc(struct efx_nic *efx, enum efx_fc_type);
146
147 #endif /* EFX_EFX_H */
148