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uapi: export ila.h
[deliverable/linux.git] / drivers / net / ethernet / sfc / efx.h
CommitLineData
8ceee660 1/****************************************************************************
f7a6d2c4 2 * Driver for Solarflare network controllers and boards
8ceee660 3 * Copyright 2005-2006 Fen Systems Ltd.
f7a6d2c4 4 * Copyright 2006-2013 Solarflare Communications Inc.
8ceee660
BH		 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"
64eebcfd 15#include "filter.h"
8ceee660 16
6a350fdb 17/* All controllers use BAR 0 for I/O space and BAR 2(&3) for memory */
02246a7f 18/* All VFs use BAR 0/1 for memory */
dc803df8 19#define EFX_MEM_BAR 2
02246a7f 20#define EFX_MEM_VF_BAR 0
dc803df8 21
e340be92
SS		 22int efx_net_open(struct net_device *net_dev);
23int efx_net_stop(struct net_device *net_dev);
24
8ceee660 25/* TX */
00aef986
JP		 26int efx_probe_tx_queue(struct efx_tx_queue *tx_queue);
27void efx_remove_tx_queue(struct efx_tx_queue *tx_queue);
28void efx_init_tx_queue(struct efx_tx_queue *tx_queue);
29void efx_init_tx_queue_core_txq(struct efx_tx_queue *tx_queue);
30void efx_fini_tx_queue(struct efx_tx_queue *tx_queue);
31netdev_tx_t efx_hard_start_xmit(struct sk_buff *skb,
32 struct net_device *net_dev);
33netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb);
34void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index);
35int efx_setup_tc(struct net_device *net_dev, u8 num_tc);
36unsigned int efx_tx_max_skb_descs(struct efx_nic *efx);
183233be 37extern unsigned int efx_piobuf_size;
b0fbdae1 38extern bool efx_separate_tx_channels;
8ceee660
BH		 39
40/* RX */
267c0157 41void efx_set_default_rx_indir_table(struct efx_nic *efx);
00aef986
JP		 42void efx_rx_config_page_split(struct efx_nic *efx);
43int efx_probe_rx_queue(struct efx_rx_queue *rx_queue);
44void efx_remove_rx_queue(struct efx_rx_queue *rx_queue);
45void efx_init_rx_queue(struct efx_rx_queue *rx_queue);
46void efx_fini_rx_queue(struct efx_rx_queue *rx_queue);
cce28794 47void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue, bool atomic);
00aef986
JP		 48void efx_rx_slow_fill(unsigned long context);
49void __efx_rx_packet(struct efx_channel *channel);
50void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index,
51 unsigned int n_frags, unsigned int len, u16 flags);
ff734ef4
BH		 52static inline void efx_rx_flush_packet(struct efx_channel *channel)
53{
85740cdf
BH		 54 if (channel->rx_pkt_n_frags)
55 __efx_rx_packet(channel);
ff734ef4 56}
00aef986 57void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue);
ecc910f5
SH		 58
59#define EFX_MAX_DMAQ_SIZE 4096UL
60#define EFX_DEFAULT_DMAQ_SIZE 1024UL
61#define EFX_MIN_DMAQ_SIZE 512UL
62
63#define EFX_MAX_EVQ_SIZE 16384UL
64#define EFX_MIN_EVQ_SIZE 512UL
8ceee660 65
7e6d06f0
BH		 66/* Maximum number of TCP segments we support for soft-TSO */
67#define EFX_TSO_MAX_SEGS 100
68
69/* The smallest [rt]xq_entries that the driver supports. RX minimum
70 * is a bit arbitrary. For TX, we must have space for at least 2
71 * TSO skbs.
72 */
73#define EFX_RXQ_MIN_ENT 128U
74#define EFX_TXQ_MIN_ENT(efx) (2 * efx_tx_max_skb_descs(efx))
4642610c 75
d9317aea
BH		 76#define EFX_TXQ_MAX_ENT(efx) (EFX_WORKAROUND_35388(efx) ? \
77 EFX_MAX_DMAQ_SIZE / 2 : EFX_MAX_DMAQ_SIZE)
78
64eebcfd 79/* Filters */
add72477 80
0d322413
EC		 81void efx_mac_reconfigure(struct efx_nic *efx);
82
add72477
BH		 83/**
84 * efx_filter_insert_filter - add or replace a filter
85 * @efx: NIC in which to insert the filter
86 * @spec: Specification for the filter
87 * @replace_equal: Flag for whether the specified filter may replace an
88 * existing filter with equal priority
89 *
90 * On success, return the filter ID.
91 * On failure, return a negative error code.
92 *
b883d0bd
BH		 93 * If existing filters have equal match values to the new filter spec,
94 * then the new filter might replace them or the function might fail,
95 * as follows.
96 *
97 * 1. If the existing filters have lower priority, or @replace_equal
98 * is set and they have equal priority, replace them.
99 *
100 * 2. If the existing filters have higher priority, return -%EPERM.
101 *
102 * 3. If !efx_filter_is_mc_recipient(@spec), or the NIC does not
103 * support delivery to multiple recipients, return -%EEXIST.
104 *
105 * This implies that filters for multiple multicast recipients must
106 * all be inserted with the same priority and @replace_equal = %false.
add72477
BH		 107 */
108static inline s32 efx_filter_insert_filter(struct efx_nic *efx,
109 struct efx_filter_spec *spec,
110 bool replace_equal)
111{
112 return efx->type->filter_insert(efx, spec, replace_equal);
113}
114
115/**
116 * efx_filter_remove_id_safe - remove a filter by ID, carefully
117 * @efx: NIC from which to remove the filter
118 * @priority: Priority of filter, as passed to @efx_filter_insert_filter
119 * @filter_id: ID of filter, as returned by @efx_filter_insert_filter
120 *
121 * This function will range-check @filter_id, so it is safe to call
122 * with a value passed from userland.
123 */
124static inline int efx_filter_remove_id_safe(struct efx_nic *efx,
125 enum efx_filter_priority priority,
126 u32 filter_id)
127{
128 return efx->type->filter_remove_safe(efx, priority, filter_id);
129}
130
131/**
132 * efx_filter_get_filter_safe - retrieve a filter by ID, carefully
133 * @efx: NIC from which to remove the filter
134 * @priority: Priority of filter, as passed to @efx_filter_insert_filter
135 * @filter_id: ID of filter, as returned by @efx_filter_insert_filter
136 * @spec: Buffer in which to store filter specification
137 *
138 * This function will range-check @filter_id, so it is safe to call
139 * with a value passed from userland.
140 */
141static inline int
142efx_filter_get_filter_safe(struct efx_nic *efx,
143 enum efx_filter_priority priority,
144 u32 filter_id, struct efx_filter_spec *spec)
145{
146 return efx->type->filter_get_safe(efx, priority, filter_id, spec);
147}
148
add72477
BH		 149static inline u32 efx_filter_count_rx_used(struct efx_nic *efx,
150 enum efx_filter_priority priority)
151{
152 return efx->type->filter_count_rx_used(efx, priority);
153}
154static inline u32 efx_filter_get_rx_id_limit(struct efx_nic *efx)
155{
156 return efx->type->filter_get_rx_id_limit(efx);
157}
158static inline s32 efx_filter_get_rx_ids(struct efx_nic *efx,
159 enum efx_filter_priority priority,
160 u32 *buf, u32 size)
161{
162 return efx->type->filter_get_rx_ids(efx, priority, buf, size);
163}
64d8ad6d 164#ifdef CONFIG_RFS_ACCEL
00aef986
JP		 165int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
166 u16 rxq_index, u32 flow_id);
167bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned quota);
64d8ad6d
BH		 168static inline void efx_filter_rfs_expire(struct efx_channel *channel)
169{
170 if (channel->rfs_filters_added >= 60 &&
171 __efx_filter_rfs_expire(channel->efx, 100))
172 channel->rfs_filters_added -= 60;
173}
174#define efx_filter_rfs_enabled() 1
175#else
176static inline void efx_filter_rfs_expire(struct efx_channel *channel) {}
177#define efx_filter_rfs_enabled() 0
178#endif
00aef986 179bool efx_filter_is_mc_recipient(const struct efx_filter_spec *spec);
64eebcfd 180
8ceee660 181/* Channels */
00aef986
JP		 182int efx_channel_dummy_op_int(struct efx_channel *channel);
183void efx_channel_dummy_op_void(struct efx_channel *channel);
184int efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries);
8ceee660
BH		 185
186/* Ports */
00aef986
JP		 187int efx_reconfigure_port(struct efx_nic *efx);
188int __efx_reconfigure_port(struct efx_nic *efx);
8c8661e4 189
f5e7adc3 190/* Ethtool support */
f5e7adc3
BH		 191extern const struct ethtool_ops efx_ethtool_ops;
192
8c8661e4 193/* Reset handling */
00aef986
JP		 194int efx_reset(struct efx_nic *efx, enum reset_type method);
195void efx_reset_down(struct efx_nic *efx, enum reset_type method);
196int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok);
197int efx_try_recovery(struct efx_nic *efx);
8ceee660
BH		 198
199/* Global */
00aef986
JP		 200void efx_schedule_reset(struct efx_nic *efx, enum reset_type type);
201int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs,
202 unsigned int rx_usecs, bool rx_adaptive,
203 bool rx_may_override_tx);
204void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs,
205 unsigned int *rx_usecs, bool *rx_adaptive);
36763266
AR		 206void efx_stop_eventq(struct efx_channel *channel);
207void efx_start_eventq(struct efx_channel *channel);
8ceee660
BH		 208
209/* Dummy PHY ops for PHY drivers */
00aef986
JP		 210int efx_port_dummy_op_int(struct efx_nic *efx);
211void efx_port_dummy_op_void(struct efx_nic *efx);
8ceee660 212
e4d112e4
EC		 213/* Update the generic software stats in the passed stats array */
214void efx_update_sw_stats(struct efx_nic *efx, u64 *stats);
215
f4150724
BH		 216/* MTD */
217#ifdef CONFIG_SFC_MTD
00aef986
JP		 218int efx_mtd_add(struct efx_nic *efx, struct efx_mtd_partition *parts,
219 size_t n_parts, size_t sizeof_part);
45a3fd55
BH		 220static inline int efx_mtd_probe(struct efx_nic *efx)
221{
222 return efx->type->mtd_probe(efx);
223}
00aef986
JP		 224void efx_mtd_rename(struct efx_nic *efx);
225void efx_mtd_remove(struct efx_nic *efx);
f4150724
BH		 226#else
227static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; }
228static inline void efx_mtd_rename(struct efx_nic *efx) {}
229static inline void efx_mtd_remove(struct efx_nic *efx) {}
230#endif
8ceee660 231
7fa8d547
SS		 232#ifdef CONFIG_SFC_SRIOV
233static inline unsigned int efx_vf_size(struct efx_nic *efx)
234{
235 return 1 << efx->vi_scale;
236}
237#endif
238
8ceee660
BH		 239static inline void efx_schedule_channel(struct efx_channel *channel)
240{
62776d03
BH		 241 netif_vdbg(channel->efx, intr, channel->efx->net_dev,
242 "channel %d scheduling NAPI poll on CPU%d\n",
243 channel->channel, raw_smp_processor_id());
8ceee660 244
288379f0 245 napi_schedule(&channel->napi_str);
8ceee660
BH		 246}
247
1646a6f3
BH		 248static inline void efx_schedule_channel_irq(struct efx_channel *channel)
249{
dd40781e 250 channel->event_test_cpu = raw_smp_processor_id();
1646a6f3
BH		 251 efx_schedule_channel(channel);
252}
253
00aef986
JP		 254void efx_link_status_changed(struct efx_nic *efx);
255void efx_link_set_advertising(struct efx_nic *efx, u32);
256void efx_link_set_wanted_fc(struct efx_nic *efx, u8);
fdaa9aed 257
c2f3b8e3
DP		 258static inline void efx_device_detach_sync(struct efx_nic *efx)
259{
260 struct net_device *dev = efx->net_dev;
261
262 /* Lock/freeze all TX queues so that we can be sure the
263 * TX scheduler is stopped when we're done and before
264 * netif_device_present() becomes false.
265 */
35205b21 266 netif_tx_lock_bh(dev);
c2f3b8e3 267 netif_device_detach(dev);
35205b21 268 netif_tx_unlock_bh(dev);
c2f3b8e3
DP		 269}
270
8ceee660 271#endif /* EFX_EFX_H */
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