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Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
[deliverable/linux.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
BH		 25extern void efx_fini_tx_queue(struct efx_tx_queue *tx_queue);
26extern void efx_release_tx_buffers(struct efx_tx_queue *tx_queue);
27extern netdev_tx_t
28efx_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev);
29extern netdev_tx_t
30efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb);
59cf09cc 31extern void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index);
94b274bf 32extern int efx_setup_tc(struct net_device *net_dev, u8 num_tc);
7e6d06f0 33extern unsigned int efx_tx_max_skb_descs(struct efx_nic *efx);
8ceee660
BH		 34
35/* RX */
1648a23f 36extern void efx_rx_config_page_split(struct efx_nic *efx);
f5e7adc3
BH		 37extern int efx_probe_rx_queue(struct efx_rx_queue *rx_queue);
38extern void efx_remove_rx_queue(struct efx_rx_queue *rx_queue);
39extern void efx_init_rx_queue(struct efx_rx_queue *rx_queue);
40extern void efx_fini_rx_queue(struct efx_rx_queue *rx_queue);
f5e7adc3 41extern void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue);
90d683af 42extern void efx_rx_slow_fill(unsigned long context);
85740cdf
BH		 43extern void __efx_rx_packet(struct efx_channel *channel);
44extern void efx_rx_packet(struct efx_rx_queue *rx_queue,
45 unsigned int index, unsigned int n_frags,
db339569 46 unsigned int len, u16 flags);
ff734ef4
BH		 47static inline void efx_rx_flush_packet(struct efx_channel *channel)
48{
85740cdf
BH		 49 if (channel->rx_pkt_n_frags)
50 __efx_rx_packet(channel);
ff734ef4 51}
90d683af 52extern void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue);
ecc910f5
SH		 53
54#define EFX_MAX_DMAQ_SIZE 4096UL
55#define EFX_DEFAULT_DMAQ_SIZE 1024UL
56#define EFX_MIN_DMAQ_SIZE 512UL
57
58#define EFX_MAX_EVQ_SIZE 16384UL
59#define EFX_MIN_EVQ_SIZE 512UL
8ceee660 60
7e6d06f0
BH		 61/* Maximum number of TCP segments we support for soft-TSO */
62#define EFX_TSO_MAX_SEGS 100
63
64/* The smallest [rt]xq_entries that the driver supports. RX minimum
65 * is a bit arbitrary. For TX, we must have space for at least 2
66 * TSO skbs.
67 */
68#define EFX_RXQ_MIN_ENT 128U
69#define EFX_TXQ_MIN_ENT(efx) (2 * efx_tx_max_skb_descs(efx))
4642610c 70
64eebcfd
BH		 71/* Filters */
72extern int efx_probe_filters(struct efx_nic *efx);
73extern void efx_restore_filters(struct efx_nic *efx);
74extern void efx_remove_filters(struct efx_nic *efx);
85740cdf 75extern void efx_filter_update_rx_scatter(struct efx_nic *efx);
3532650f 76extern s32 efx_filter_insert_filter(struct efx_nic *efx,
64eebcfd
BH		 77 struct efx_filter_spec *spec,
78 bool replace);
1a6281ac
BH		 79extern int efx_filter_remove_id_safe(struct efx_nic *efx,
80 enum efx_filter_priority priority,
81 u32 filter_id);
82extern int efx_filter_get_filter_safe(struct efx_nic *efx,
83 enum efx_filter_priority priority,
84 u32 filter_id, struct efx_filter_spec *);
8891681a
BH		 85extern void efx_filter_clear_rx(struct efx_nic *efx,
86 enum efx_filter_priority priority);
1a6281ac
BH		 87extern u32 efx_filter_count_rx_used(struct efx_nic *efx,
88 enum efx_filter_priority priority);
89extern u32 efx_filter_get_rx_id_limit(struct efx_nic *efx);
90extern s32 efx_filter_get_rx_ids(struct efx_nic *efx,
91 enum efx_filter_priority priority,
92 u32 *buf, u32 size);
64d8ad6d
BH		 93#ifdef CONFIG_RFS_ACCEL
94extern int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
95 u16 rxq_index, u32 flow_id);
96extern bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned quota);
97static inline void efx_filter_rfs_expire(struct efx_channel *channel)
98{
99 if (channel->rfs_filters_added >= 60 &&
100 __efx_filter_rfs_expire(channel->efx, 100))
101 channel->rfs_filters_added -= 60;
102}
103#define efx_filter_rfs_enabled() 1
104#else
105static inline void efx_filter_rfs_expire(struct efx_channel *channel) {}
106#define efx_filter_rfs_enabled() 0
107#endif
64eebcfd 108
8ceee660 109/* Channels */
7f967c01 110extern int efx_channel_dummy_op_int(struct efx_channel *channel);
c31e5f9f 111extern void efx_channel_dummy_op_void(struct efx_channel *channel);
8ceee660 112extern void efx_process_channel_now(struct efx_channel *channel);
4642610c
BH		 113extern int
114efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries);
8ceee660
BH		 115
116/* Ports */
d3245b28
BH		 117extern int efx_reconfigure_port(struct efx_nic *efx);
118extern int __efx_reconfigure_port(struct efx_nic *efx);
8c8661e4 119
f5e7adc3 120/* Ethtool support */
f5e7adc3
BH		 121extern const struct ethtool_ops efx_ethtool_ops;
122
8c8661e4 123/* Reset handling */
eb9f6744 124extern int efx_reset(struct efx_nic *efx, enum reset_type method);
d3245b28
BH		 125extern void efx_reset_down(struct efx_nic *efx, enum reset_type method);
126extern int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok);
b28405b0 127extern int efx_try_recovery(struct efx_nic *efx);
8ceee660
BH		 128
129/* Global */
130extern void efx_schedule_reset(struct efx_nic *efx, enum reset_type type);
9e393b30
BH		 131extern int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs,
132 unsigned int rx_usecs, bool rx_adaptive,
133 bool rx_may_override_tx);
a0c4faf5
BH		 134extern void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs,
135 unsigned int *rx_usecs, bool *rx_adaptive);
8ceee660
BH		 136
137/* Dummy PHY ops for PHY drivers */
138extern int efx_port_dummy_op_int(struct efx_nic *efx);
139extern void efx_port_dummy_op_void(struct efx_nic *efx);
d215697f 140
8ceee660 141
f4150724
BH		 142/* MTD */
143#ifdef CONFIG_SFC_MTD
144extern int efx_mtd_probe(struct efx_nic *efx);
145extern void efx_mtd_rename(struct efx_nic *efx);
146extern void efx_mtd_remove(struct efx_nic *efx);
147#else
148static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; }
149static inline void efx_mtd_rename(struct efx_nic *efx) {}
150static inline void efx_mtd_remove(struct efx_nic *efx) {}
151#endif
8ceee660 152
8ceee660
BH		 153static inline void efx_schedule_channel(struct efx_channel *channel)
154{
62776d03
BH		 155 netif_vdbg(channel->efx, intr, channel->efx->net_dev,
156 "channel %d scheduling NAPI poll on CPU%d\n",
157 channel->channel, raw_smp_processor_id());
dc8cfa55 158 channel->work_pending = true;
8ceee660 159
288379f0 160 napi_schedule(&channel->napi_str);
8ceee660
BH		 161}
162
1646a6f3
BH		 163static inline void efx_schedule_channel_irq(struct efx_channel *channel)
164{
dd40781e 165 channel->event_test_cpu = raw_smp_processor_id();
1646a6f3
BH		 166 efx_schedule_channel(channel);
167}
168
fdaa9aed 169extern void efx_link_status_changed(struct efx_nic *efx);
d3245b28 170extern void efx_link_set_advertising(struct efx_nic *efx, u32);
b5626946 171extern void efx_link_set_wanted_fc(struct efx_nic *efx, u8);
fdaa9aed 172
c2f3b8e3
DP		 173static inline void efx_device_detach_sync(struct efx_nic *efx)
174{
175 struct net_device *dev = efx->net_dev;
176
177 /* Lock/freeze all TX queues so that we can be sure the
178 * TX scheduler is stopped when we're done and before
179 * netif_device_present() becomes false.
180 */
35205b21 181 netif_tx_lock_bh(dev);
c2f3b8e3 182 netif_device_detach(dev);
35205b21 183 netif_tx_unlock_bh(dev);
c2f3b8e3
DP		 184}
185
8ceee660 186#endif /* EFX_EFX_H */
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