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