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gerrit-public.fairphone.software / kernel / msm-5.4 / 179ea7f039f68ae4247a340bfb59fd861e7def12 / . / drivers / net / ethernet / sfc / efx.h
blob: 211da79a65e8a436217279aa7c4d63aee47a608c [file] [log] [blame]
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]1/****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
Ben Hutchings0a6f40c2011-02-25 00:01:34 +0000[diff] [blame]4 * Copyright 2006-2010 Solarflare Communications Inc.
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]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"
Ben Hutchings64eebcf2010-09-20 08:43:07 +0000[diff] [blame]15#include "filter.h"
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]16
Ben Hutchingsdc803df2009-10-23 08:32:33 +0000[diff] [blame]17/* Solarstorm controllers use BAR 0 for I/O space and BAR 2(&3) for memory */
18#define EFX_MEM_BAR 2
19
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]20/* TX */
Ben Hutchingsf5e7adc2009-11-23 16:07:30 +0000[diff] [blame]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);
Ben Hutchings60031fc2011-01-12 18:39:40 +0000[diff] [blame]24extern void efx_init_tx_queue_core_txq(struct efx_tx_queue *tx_queue);
Ben Hutchingsf5e7adc2009-11-23 16:07:30 +0000[diff] [blame]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);
Ben Hutchings59cf09c2009-10-23 08:31:54 +0000[diff] [blame]31extern void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index);
Ben Hutchings94b274b2011-01-10 21:18:20 +0000[diff] [blame]32extern int efx_setup_tc(struct net_device *net_dev, u8 num_tc);
Ben Hutchings7e6d06f2012-07-30 15:57:44 +0000[diff] [blame]33extern unsigned int efx_tx_max_skb_descs(struct efx_nic *efx);
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]34
35/* RX */
Ben Hutchingsf5e7adc2009-11-23 16:07:30 +0000[diff] [blame]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);
Ben Hutchingsf5e7adc2009-11-23 16:07:30 +0000[diff] [blame]40extern void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue);
Steve Hodgson90d683a2010-06-01 11:19:39 +0000[diff] [blame]41extern void efx_rx_slow_fill(unsigned long context);
Ben Hutchings85740cdf2013-01-29 23:33:15 +0000[diff] [blame]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,
Ben Hutchingsdb339562011-08-26 18:05:11 +0100[diff] [blame]45 unsigned int len, u16 flags);
Ben Hutchingsff734ef2013-01-29 23:33:14 +0000[diff] [blame]46static inline void efx_rx_flush_packet(struct efx_channel *channel)
47{
Ben Hutchings85740cdf2013-01-29 23:33:15 +0000[diff] [blame]48 if (channel->rx_pkt_n_frags)
49 __efx_rx_packet(channel);
Ben Hutchingsff734ef2013-01-29 23:33:14 +0000[diff] [blame]50}
Steve Hodgson90d683a2010-06-01 11:19:39 +0000[diff] [blame]51extern void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue);
Steve Hodgsonecc910f2010-09-10 06:42:22 +0000[diff] [blame]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
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]59
Ben Hutchings7e6d06f2012-07-30 15:57:44 +0000[diff] [blame]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))
Ben Hutchings46426102010-09-10 06:42:33 +0000[diff] [blame]69
Ben Hutchings64eebcf2010-09-20 08:43:07 +0000[diff] [blame]70/* Filters */
71extern int efx_probe_filters(struct efx_nic *efx);
72extern void efx_restore_filters(struct efx_nic *efx);
73extern void efx_remove_filters(struct efx_nic *efx);
Ben Hutchings85740cdf2013-01-29 23:33:15 +0000[diff] [blame]74extern void efx_filter_update_rx_scatter(struct efx_nic *efx);
Ben Hutchings35326502012-01-03 12:05:27 +0000[diff] [blame]75extern s32 efx_filter_insert_filter(struct efx_nic *efx,
Ben Hutchings64eebcf2010-09-20 08:43:07 +0000[diff] [blame]76 struct efx_filter_spec *spec,
77 bool replace);
Ben Hutchings1a6281a2012-01-03 12:05:39 +0000[diff] [blame]78extern int efx_filter_remove_id_safe(struct efx_nic *efx,
79 enum efx_filter_priority priority,
80 u32 filter_id);
81extern int efx_filter_get_filter_safe(struct efx_nic *efx,
82 enum efx_filter_priority priority,
83 u32 filter_id, struct efx_filter_spec *);
Ben Hutchings88916812010-12-07 19:02:27 +0000[diff] [blame]84extern void efx_filter_clear_rx(struct efx_nic *efx,
85 enum efx_filter_priority priority);
Ben Hutchings1a6281a2012-01-03 12:05:39 +0000[diff] [blame]86extern u32 efx_filter_count_rx_used(struct efx_nic *efx,
87 enum efx_filter_priority priority);
88extern u32 efx_filter_get_rx_id_limit(struct efx_nic *efx);
89extern s32 efx_filter_get_rx_ids(struct efx_nic *efx,
90 enum efx_filter_priority priority,
91 u32 *buf, u32 size);
Ben Hutchings64d8ad62011-01-05 00:50:41 +0000[diff] [blame]92#ifdef CONFIG_RFS_ACCEL
93extern int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
94 u16 rxq_index, u32 flow_id);
95extern bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned quota);
96static inline void efx_filter_rfs_expire(struct efx_channel *channel)
97{
98 if (channel->rfs_filters_added >= 60 &&
99 __efx_filter_rfs_expire(channel->efx, 100))
100 channel->rfs_filters_added -= 60;
101}
102#define efx_filter_rfs_enabled() 1
103#else
104static inline void efx_filter_rfs_expire(struct efx_channel *channel) {}
105#define efx_filter_rfs_enabled() 0
106#endif
Ben Hutchings64eebcf2010-09-20 08:43:07 +0000[diff] [blame]107
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]108/* Channels */
Ben Hutchings7f967c02012-02-13 23:45:02 +0000[diff] [blame]109extern int efx_channel_dummy_op_int(struct efx_channel *channel);
Stuart Hodgsonc31e5f92012-07-18 09:52:11 +0100[diff] [blame]110extern void efx_channel_dummy_op_void(struct efx_channel *channel);
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]111extern void efx_process_channel_now(struct efx_channel *channel);
Ben Hutchings46426102010-09-10 06:42:33 +0000[diff] [blame]112extern int
113efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries);
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]114
115/* Ports */
Ben Hutchingsd3245b22009-11-29 03:42:41 +0000[diff] [blame]116extern int efx_reconfigure_port(struct efx_nic *efx);
117extern int __efx_reconfigure_port(struct efx_nic *efx);
Ben Hutchings8c8661e2008-09-01 12:49:02 +0100[diff] [blame]118
Ben Hutchingsf5e7adc2009-11-23 16:07:30 +0000[diff] [blame]119/* Ethtool support */
Ben Hutchingsf5e7adc2009-11-23 16:07:30 +0000[diff] [blame]120extern const struct ethtool_ops efx_ethtool_ops;
121
Ben Hutchings8c8661e2008-09-01 12:49:02 +0100[diff] [blame]122/* Reset handling */
Ben Hutchingseb9f6742009-11-29 03:43:15 +0000[diff] [blame]123extern int efx_reset(struct efx_nic *efx, enum reset_type method);
Ben Hutchingsd3245b22009-11-29 03:42:41 +0000[diff] [blame]124extern void efx_reset_down(struct efx_nic *efx, enum reset_type method);
125extern int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok);
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]126
127/* Global */
128extern void efx_schedule_reset(struct efx_nic *efx, enum reset_type type);
Ben Hutchings9e393b32011-09-05 07:43:04 +0000[diff] [blame]129extern int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs,
130 unsigned int rx_usecs, bool rx_adaptive,
131 bool rx_may_override_tx);
Ben Hutchingsa0c4faf2011-09-05 07:42:25 +0000[diff] [blame]132extern void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs,
133 unsigned int *rx_usecs, bool *rx_adaptive);
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]134
135/* Dummy PHY ops for PHY drivers */
136extern int efx_port_dummy_op_int(struct efx_nic *efx);
137extern void efx_port_dummy_op_void(struct efx_nic *efx);
stephen hemmingerd2156972010-10-18 05:27:31 +0000[diff] [blame]138
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]139
Ben Hutchingsf4150722008-11-04 20:34:28 +0000[diff] [blame]140/* MTD */
141#ifdef CONFIG_SFC_MTD
142extern int efx_mtd_probe(struct efx_nic *efx);
143extern void efx_mtd_rename(struct efx_nic *efx);
144extern void efx_mtd_remove(struct efx_nic *efx);
145#else
146static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; }
147static inline void efx_mtd_rename(struct efx_nic *efx) {}
148static inline void efx_mtd_remove(struct efx_nic *efx) {}
149#endif
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]150
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]151static inline void efx_schedule_channel(struct efx_channel *channel)
152{
Ben Hutchings62776d02010-06-23 11:30:07 +0000[diff] [blame]153 netif_vdbg(channel->efx, intr, channel->efx->net_dev,
154 "channel %d scheduling NAPI poll on CPU%d\n",
155 channel->channel, raw_smp_processor_id());
Ben Hutchingsdc8cfa52008-09-01 12:46:50 +0100[diff] [blame]156 channel->work_pending = true;
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]157
Ben Hutchings288379f2009-01-19 16:43:59 -0800[diff] [blame]158 napi_schedule(&channel->napi_str);
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]159}
160
Ben Hutchings1646a6f32012-01-05 20:14:10 +0000[diff] [blame]161static inline void efx_schedule_channel_irq(struct efx_channel *channel)
162{
Ben Hutchingsdd407812012-02-28 23:40:21 +0000[diff] [blame]163 channel->event_test_cpu = raw_smp_processor_id();
Ben Hutchings1646a6f32012-01-05 20:14:10 +0000[diff] [blame]164 efx_schedule_channel(channel);
165}
166
Steve Hodgsonfdaa9ae2009-11-28 05:34:05 +0000[diff] [blame]167extern void efx_link_status_changed(struct efx_nic *efx);
Ben Hutchingsd3245b22009-11-29 03:42:41 +0000[diff] [blame]168extern void efx_link_set_advertising(struct efx_nic *efx, u32);
David S. Millerb56269462011-05-17 17:53:22 -0400[diff] [blame]169extern void efx_link_set_wanted_fc(struct efx_nic *efx, u8);
Steve Hodgsonfdaa9ae2009-11-28 05:34:05 +0000[diff] [blame]170
Daniel Pieczkoc2f3b8e2012-10-17 13:21:23 +0100[diff] [blame]171static inline void efx_device_detach_sync(struct efx_nic *efx)
172{
173 struct net_device *dev = efx->net_dev;
174
175 /* Lock/freeze all TX queues so that we can be sure the
176 * TX scheduler is stopped when we're done and before
177 * netif_device_present() becomes false.
178 */
Ben Hutchings35205b22013-03-05 01:03:47 +0000[diff] [blame]179 netif_tx_lock_bh(dev);
Daniel Pieczkoc2f3b8e2012-10-17 13:21:23 +0100[diff] [blame]180 netif_device_detach(dev);
Ben Hutchings35205b22013-03-05 01:03:47 +0000[diff] [blame]181 netif_tx_unlock_bh(dev);
Daniel Pieczkoc2f3b8e2012-10-17 13:21:23 +0100[diff] [blame]182}
183
Ben Hutchings8ceee662008-04-27 12:55:59 +0100[diff] [blame]184#endif /* EFX_EFX_H */