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sfc: Move NIC-type-specific MTD partition date into separate structures
[linux-block.git] / drivers / net / ethernet / sfc / efx.h
CommitLineData
8ceee660
BH		 1/****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
0a6f40c6 4 * Copyright 2006-2010 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
dc803df8
BH		 17/* Solarstorm controllers use BAR 0 for I/O space and BAR 2(&3) for memory */
18#define EFX_MEM_BAR 2
19
8ceee660 20/* TX */
f5e7adc3
BH		 21extern int efx_probe_tx_queue(struct efx_tx_queue *tx_queue);
22extern void efx_remove_tx_queue(struct efx_tx_queue *tx_queue);
23extern void efx_init_tx_queue(struct efx_tx_queue *tx_queue);
60031fcc 24extern void efx_init_tx_queue_core_txq(struct efx_tx_queue *tx_queue);
f5e7adc3 25extern void efx_fini_tx_queue(struct efx_tx_queue *tx_queue);
f5e7adc3
BH		 26extern netdev_tx_t
27efx_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev);
28extern netdev_tx_t
29efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb);
59cf09cc 30extern void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index);
94b274bf 31extern int efx_setup_tc(struct net_device *net_dev, u8 num_tc);
7e6d06f0 32extern unsigned int efx_tx_max_skb_descs(struct efx_nic *efx);
8ceee660
BH		 33
34/* RX */
1648a23f 35extern void efx_rx_config_page_split(struct efx_nic *efx);
f5e7adc3
BH		 36extern int efx_probe_rx_queue(struct efx_rx_queue *rx_queue);
37extern void efx_remove_rx_queue(struct efx_rx_queue *rx_queue);
38extern void efx_init_rx_queue(struct efx_rx_queue *rx_queue);
39extern void efx_fini_rx_queue(struct efx_rx_queue *rx_queue);
f5e7adc3 40extern void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue);
90d683af 41extern void efx_rx_slow_fill(unsigned long context);
85740cdf
BH		 42extern void __efx_rx_packet(struct efx_channel *channel);
43extern void efx_rx_packet(struct efx_rx_queue *rx_queue,
44 unsigned int index, unsigned int n_frags,
db339569 45 unsigned int len, u16 flags);
ff734ef4
BH		 46static inline void efx_rx_flush_packet(struct efx_channel *channel)
47{
85740cdf
BH		 48 if (channel->rx_pkt_n_frags)
49 __efx_rx_packet(channel);
ff734ef4 50}
90d683af 51extern void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue);
ecc910f5
SH		 52
53#define EFX_MAX_DMAQ_SIZE 4096UL
54#define EFX_DEFAULT_DMAQ_SIZE 1024UL
55#define EFX_MIN_DMAQ_SIZE 512UL
56
57#define EFX_MAX_EVQ_SIZE 16384UL
58#define EFX_MIN_EVQ_SIZE 512UL
8ceee660 59
7e6d06f0
BH		 60/* Maximum number of TCP segments we support for soft-TSO */
61#define EFX_TSO_MAX_SEGS 100
62
63/* The smallest [rt]xq_entries that the driver supports. RX minimum
64 * is a bit arbitrary. For TX, we must have space for at least 2
65 * TSO skbs.
66 */
67#define EFX_RXQ_MIN_ENT 128U
68#define EFX_TXQ_MIN_ENT(efx) (2 * efx_tx_max_skb_descs(efx))
4642610c 69
64eebcfd 70/* Filters */
add72477
BH		 71
72/**
73 * efx_filter_insert_filter - add or replace a filter
74 * @efx: NIC in which to insert the filter
75 * @spec: Specification for the filter
76 * @replace_equal: Flag for whether the specified filter may replace an
77 * existing filter with equal priority
78 *
79 * On success, return the filter ID.
80 * On failure, return a negative error code.
81 *
82 * If an existing filter has equal match values to the new filter
83 * spec, then the new filter might replace it, depending on the
84 * relative priorities. If the existing filter has lower priority, or
85 * if @replace_equal is set and it has equal priority, then it is
86 * replaced. Otherwise the function fails, returning -%EPERM if
87 * the existing filter has higher priority or -%EEXIST if it has
88 * equal priority.
89 */
90static inline s32 efx_filter_insert_filter(struct efx_nic *efx,
91 struct efx_filter_spec *spec,
92 bool replace_equal)
93{
94 return efx->type->filter_insert(efx, spec, replace_equal);
95}
96
97/**
98 * efx_filter_remove_id_safe - remove a filter by ID, carefully
99 * @efx: NIC from which to remove the filter
100 * @priority: Priority of filter, as passed to @efx_filter_insert_filter
101 * @filter_id: ID of filter, as returned by @efx_filter_insert_filter
102 *
103 * This function will range-check @filter_id, so it is safe to call
104 * with a value passed from userland.
105 */
106static inline int efx_filter_remove_id_safe(struct efx_nic *efx,
107 enum efx_filter_priority priority,
108 u32 filter_id)
109{
110 return efx->type->filter_remove_safe(efx, priority, filter_id);
111}
112
113/**
114 * efx_filter_get_filter_safe - retrieve a filter by ID, carefully
115 * @efx: NIC from which to remove the filter
116 * @priority: Priority of filter, as passed to @efx_filter_insert_filter
117 * @filter_id: ID of filter, as returned by @efx_filter_insert_filter
118 * @spec: Buffer in which to store filter specification
119 *
120 * This function will range-check @filter_id, so it is safe to call
121 * with a value passed from userland.
122 */
123static inline int
124efx_filter_get_filter_safe(struct efx_nic *efx,
125 enum efx_filter_priority priority,
126 u32 filter_id, struct efx_filter_spec *spec)
127{
128 return efx->type->filter_get_safe(efx, priority, filter_id, spec);
129}
130
131/**
132 * efx_farch_filter_clear_rx - remove RX filters by priority
133 * @efx: NIC from which to remove the filters
134 * @priority: Maximum priority to remove
135 */
136static inline void efx_filter_clear_rx(struct efx_nic *efx,
137 enum efx_filter_priority priority)
138{
139 return efx->type->filter_clear_rx(efx, priority);
140}
141
142static inline u32 efx_filter_count_rx_used(struct efx_nic *efx,
143 enum efx_filter_priority priority)
144{
145 return efx->type->filter_count_rx_used(efx, priority);
146}
147static inline u32 efx_filter_get_rx_id_limit(struct efx_nic *efx)
148{
149 return efx->type->filter_get_rx_id_limit(efx);
150}
151static inline s32 efx_filter_get_rx_ids(struct efx_nic *efx,
152 enum efx_filter_priority priority,
153 u32 *buf, u32 size)
154{
155 return efx->type->filter_get_rx_ids(efx, priority, buf, size);
156}
64d8ad6d
BH		 157#ifdef CONFIG_RFS_ACCEL
158extern int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
159 u16 rxq_index, u32 flow_id);
160extern bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned quota);
161static inline void efx_filter_rfs_expire(struct efx_channel *channel)
162{
163 if (channel->rfs_filters_added >= 60 &&
164 __efx_filter_rfs_expire(channel->efx, 100))
165 channel->rfs_filters_added -= 60;
166}
167#define efx_filter_rfs_enabled() 1
168#else
169static inline void efx_filter_rfs_expire(struct efx_channel *channel) {}
170#define efx_filter_rfs_enabled() 0
171#endif
64eebcfd 172
8ceee660 173/* Channels */
7f967c01 174extern int efx_channel_dummy_op_int(struct efx_channel *channel);
c31e5f9f 175extern void efx_channel_dummy_op_void(struct efx_channel *channel);
4642610c
BH		 176extern int
177efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries);
8ceee660
BH		 178
179/* Ports */
d3245b28
BH		 180extern int efx_reconfigure_port(struct efx_nic *efx);
181extern int __efx_reconfigure_port(struct efx_nic *efx);
8c8661e4 182
f5e7adc3 183/* Ethtool support */
f5e7adc3
BH		 184extern const struct ethtool_ops efx_ethtool_ops;
185
8c8661e4 186/* Reset handling */
eb9f6744 187extern int efx_reset(struct efx_nic *efx, enum reset_type method);
d3245b28
BH		 188extern void efx_reset_down(struct efx_nic *efx, enum reset_type method);
189extern int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok);
b28405b0 190extern int efx_try_recovery(struct efx_nic *efx);
8ceee660
BH		 191
192/* Global */
193extern void efx_schedule_reset(struct efx_nic *efx, enum reset_type type);
9e393b30
BH		 194extern int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs,
195 unsigned int rx_usecs, bool rx_adaptive,
196 bool rx_may_override_tx);
a0c4faf5
BH		 197extern void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs,
198 unsigned int *rx_usecs, bool *rx_adaptive);
8ceee660
BH		 199
200/* Dummy PHY ops for PHY drivers */
201extern int efx_port_dummy_op_int(struct efx_nic *efx);
202extern void efx_port_dummy_op_void(struct efx_nic *efx);
d215697f 203
8ceee660 204
f4150724
BH		 205/* MTD */
206#ifdef CONFIG_SFC_MTD
207extern int efx_mtd_probe(struct efx_nic *efx);
208extern void efx_mtd_rename(struct efx_nic *efx);
209extern void efx_mtd_remove(struct efx_nic *efx);
210#else
211static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; }
212static inline void efx_mtd_rename(struct efx_nic *efx) {}
213static inline void efx_mtd_remove(struct efx_nic *efx) {}
214#endif
8ceee660 215
8ceee660
BH		 216static inline void efx_schedule_channel(struct efx_channel *channel)
217{
62776d03
BH		 218 netif_vdbg(channel->efx, intr, channel->efx->net_dev,
219 "channel %d scheduling NAPI poll on CPU%d\n",
220 channel->channel, raw_smp_processor_id());
8ceee660 221
288379f0 222 napi_schedule(&channel->napi_str);
8ceee660
BH		 223}
224
1646a6f3
BH		 225static inline void efx_schedule_channel_irq(struct efx_channel *channel)
226{
dd40781e 227 channel->event_test_cpu = raw_smp_processor_id();
1646a6f3
BH		 228 efx_schedule_channel(channel);
229}
230
fdaa9aed 231extern void efx_link_status_changed(struct efx_nic *efx);
d3245b28 232extern void efx_link_set_advertising(struct efx_nic *efx, u32);
b5626946 233extern void efx_link_set_wanted_fc(struct efx_nic *efx, u8);
fdaa9aed 234
c2f3b8e3
DP		 235static inline void efx_device_detach_sync(struct efx_nic *efx)
236{
237 struct net_device *dev = efx->net_dev;
238
239 /* Lock/freeze all TX queues so that we can be sure the
240 * TX scheduler is stopped when we're done and before
241 * netif_device_present() becomes false.
242 */
35205b21 243 netif_tx_lock_bh(dev);
c2f3b8e3 244 netif_device_detach(dev);
35205b21 245 netif_tx_unlock_bh(dev);
c2f3b8e3
DP		 246}
247
8ceee660 248#endif /* EFX_EFX_H */
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