projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
sfc: Enable RX DMA scattering where possible
[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 */
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
BH		 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);
85740cdf 74extern void efx_filter_update_rx_scatter(struct efx_nic *efx);
3532650f 75extern s32 efx_filter_insert_filter(struct efx_nic *efx,
64eebcfd
BH		 76 struct efx_filter_spec *spec,
77 bool replace);
1a6281ac
BH		 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 *);
8891681a
BH		 84extern void efx_filter_clear_rx(struct efx_nic *efx,
85 enum efx_filter_priority priority);
1a6281ac
BH		 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);
64d8ad6d
BH		 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
64eebcfd 107
8ceee660 108/* Channels */
7f967c01 109extern int efx_channel_dummy_op_int(struct efx_channel *channel);
c31e5f9f 110extern void efx_channel_dummy_op_void(struct efx_channel *channel);
8ceee660 111extern void efx_process_channel_now(struct efx_channel *channel);
4642610c
BH		 112extern int
113efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries);
8ceee660
BH		 114
115/* Ports */
d3245b28
BH		 116extern int efx_reconfigure_port(struct efx_nic *efx);
117extern int __efx_reconfigure_port(struct efx_nic *efx);
8c8661e4 118
f5e7adc3 119/* Ethtool support */
f5e7adc3
BH		 120extern const struct ethtool_ops efx_ethtool_ops;
121
8c8661e4 122/* Reset handling */
eb9f6744 123extern int efx_reset(struct efx_nic *efx, enum reset_type method);
d3245b28
BH		 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);
8ceee660
BH		 126
127/* Global */
128extern void efx_schedule_reset(struct efx_nic *efx, enum reset_type type);
9e393b30
BH		 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);
a0c4faf5
BH		 132extern void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs,
133 unsigned int *rx_usecs, bool *rx_adaptive);
8ceee660
BH		 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);
d215697f 138
8ceee660 139
f4150724
BH		 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
8ceee660 150
8ceee660
BH		 151static inline void efx_schedule_channel(struct efx_channel *channel)
152{
62776d03
BH		 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());
dc8cfa55 156 channel->work_pending = true;
8ceee660 157
288379f0 158 napi_schedule(&channel->napi_str);
8ceee660
BH		 159}
160
1646a6f3
BH		 161static inline void efx_schedule_channel_irq(struct efx_channel *channel)
162{
dd40781e 163 channel->event_test_cpu = raw_smp_processor_id();
1646a6f3
BH		 164 efx_schedule_channel(channel);
165}
166
fdaa9aed 167extern void efx_link_status_changed(struct efx_nic *efx);
d3245b28 168extern void efx_link_set_advertising(struct efx_nic *efx, u32);
b5626946 169extern void efx_link_set_wanted_fc(struct efx_nic *efx, u8);
fdaa9aed 170
c2f3b8e3
DP		 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 */
35205b21 179 netif_tx_lock_bh(dev);
c2f3b8e3 180 netif_device_detach(dev);
35205b21 181 netif_tx_unlock_bh(dev);
c2f3b8e3
DP		 182}
183
8ceee660 184#endif /* EFX_EFX_H */
Linux kernel - Deliverables
This page took 0.579932 seconds and 5 git commands to generate.