Thomas Gleixner | d2912cb | 2019-06-04 10:11:33 +0200 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 2 | /**************************************************************************** |
Ben Hutchings | f7a6d2c | 2013-08-29 23:32:48 +0100 | [diff] [blame] | 3 | * Driver for Solarflare network controllers and boards |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 4 | * Copyright 2005-2006 Fen Systems Ltd. |
Ben Hutchings | f7a6d2c | 2013-08-29 23:32:48 +0100 | [diff] [blame] | 5 | * Copyright 2006-2013 Solarflare Communications Inc. |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 6 | */ |
| 7 | |
| 8 | #ifndef EFX_EFX_H |
| 9 | #define EFX_EFX_H |
| 10 | |
| 11 | #include "net_driver.h" |
Ben Hutchings | 64eebcf | 2010-09-20 08:43:07 +0000 | [diff] [blame] | 12 | #include "filter.h" |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 13 | |
Shradha Shah | e340be9 | 2015-05-20 11:11:03 +0100 | [diff] [blame] | 14 | int efx_net_open(struct net_device *net_dev); |
| 15 | int efx_net_stop(struct net_device *net_dev); |
| 16 | |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 17 | /* TX */ |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 18 | int efx_probe_tx_queue(struct efx_tx_queue *tx_queue); |
| 19 | void efx_remove_tx_queue(struct efx_tx_queue *tx_queue); |
| 20 | void efx_init_tx_queue(struct efx_tx_queue *tx_queue); |
| 21 | void efx_init_tx_queue_core_txq(struct efx_tx_queue *tx_queue); |
| 22 | void efx_fini_tx_queue(struct efx_tx_queue *tx_queue); |
| 23 | netdev_tx_t efx_hard_start_xmit(struct sk_buff *skb, |
| 24 | struct net_device *net_dev); |
| 25 | netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb); |
| 26 | void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index); |
Jiri Pirko | 2572ac5 | 2017-08-07 10:15:17 +0200 | [diff] [blame] | 27 | int efx_setup_tc(struct net_device *net_dev, enum tc_setup_type type, |
Jiri Pirko | de4784c | 2017-08-07 10:15:32 +0200 | [diff] [blame] | 28 | void *type_data); |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 29 | unsigned int efx_tx_max_skb_descs(struct efx_nic *efx); |
Ben Hutchings | 183233b | 2013-06-28 21:47:12 +0100 | [diff] [blame] | 30 | extern unsigned int efx_piobuf_size; |
Shradha Shah | b0fbdae | 2015-08-28 10:55:42 +0100 | [diff] [blame] | 31 | extern bool efx_separate_tx_channels; |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 32 | |
| 33 | /* RX */ |
Edward Cree | 42356d9 | 2018-03-08 15:45:17 +0000 | [diff] [blame] | 34 | void efx_set_default_rx_indir_table(struct efx_nic *efx, |
| 35 | struct efx_rss_context *ctx); |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 36 | void efx_rx_config_page_split(struct efx_nic *efx); |
| 37 | int efx_probe_rx_queue(struct efx_rx_queue *rx_queue); |
| 38 | void efx_remove_rx_queue(struct efx_rx_queue *rx_queue); |
| 39 | void efx_init_rx_queue(struct efx_rx_queue *rx_queue); |
| 40 | void efx_fini_rx_queue(struct efx_rx_queue *rx_queue); |
Jon Cooper | cce2879 | 2013-10-02 11:04:14 +0100 | [diff] [blame] | 41 | void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue, bool atomic); |
Kees Cook | 7aa1402 | 2017-10-24 01:45:59 -0700 | [diff] [blame] | 42 | void efx_rx_slow_fill(struct timer_list *t); |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 43 | void __efx_rx_packet(struct efx_channel *channel); |
| 44 | void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index, |
| 45 | unsigned int n_frags, unsigned int len, u16 flags); |
Ben Hutchings | ff734ef | 2013-01-29 23:33:14 +0000 | [diff] [blame] | 46 | static inline void efx_rx_flush_packet(struct efx_channel *channel) |
| 47 | { |
Ben Hutchings | 85740cdf | 2013-01-29 23:33:15 +0000 | [diff] [blame] | 48 | if (channel->rx_pkt_n_frags) |
| 49 | __efx_rx_packet(channel); |
Ben Hutchings | ff734ef | 2013-01-29 23:33:14 +0000 | [diff] [blame] | 50 | } |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 51 | void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue); |
Steve Hodgson | ecc910f | 2010-09-10 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 Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 59 | |
Ben Hutchings | 7e6d06f | 2012-07-30 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 Hutchings | 4642610 | 2010-09-10 06:42:33 +0000 | [diff] [blame] | 69 | |
Bert Kenward | a53d26e | 2017-04-25 13:44:54 +0100 | [diff] [blame] | 70 | /* All EF10 architecture NICs steal one bit of the DMAQ size for various |
| 71 | * other purposes when counting TxQ entries, so we halve the queue size. |
| 72 | */ |
| 73 | #define EFX_TXQ_MAX_ENT(efx) (EFX_WORKAROUND_EF10(efx) ? \ |
Ben Hutchings | d9317ae | 2014-01-23 14:35:48 +0000 | [diff] [blame] | 74 | EFX_MAX_DMAQ_SIZE / 2 : EFX_MAX_DMAQ_SIZE) |
| 75 | |
Bert Kenward | f1c2ef4 | 2015-12-11 09:39:32 +0000 | [diff] [blame] | 76 | static inline bool efx_rss_enabled(struct efx_nic *efx) |
| 77 | { |
| 78 | return efx->rss_spread > 1; |
| 79 | } |
| 80 | |
Ben Hutchings | 64eebcf | 2010-09-20 08:43:07 +0000 | [diff] [blame] | 81 | /* Filters */ |
Ben Hutchings | add7247 | 2012-11-08 01:46:53 +0000 | [diff] [blame] | 82 | |
Edward Cree | 0d32241 | 2015-05-20 11:10:03 +0100 | [diff] [blame] | 83 | void efx_mac_reconfigure(struct efx_nic *efx); |
| 84 | |
Ben Hutchings | add7247 | 2012-11-08 01:46:53 +0000 | [diff] [blame] | 85 | /** |
| 86 | * efx_filter_insert_filter - add or replace a filter |
| 87 | * @efx: NIC in which to insert the filter |
| 88 | * @spec: Specification for the filter |
| 89 | * @replace_equal: Flag for whether the specified filter may replace an |
| 90 | * existing filter with equal priority |
| 91 | * |
| 92 | * On success, return the filter ID. |
| 93 | * On failure, return a negative error code. |
| 94 | * |
Ben Hutchings | b883d0b | 2013-01-15 22:00:07 +0000 | [diff] [blame] | 95 | * If existing filters have equal match values to the new filter spec, |
| 96 | * then the new filter might replace them or the function might fail, |
| 97 | * as follows. |
| 98 | * |
| 99 | * 1. If the existing filters have lower priority, or @replace_equal |
| 100 | * is set and they have equal priority, replace them. |
| 101 | * |
| 102 | * 2. If the existing filters have higher priority, return -%EPERM. |
| 103 | * |
| 104 | * 3. If !efx_filter_is_mc_recipient(@spec), or the NIC does not |
| 105 | * support delivery to multiple recipients, return -%EEXIST. |
| 106 | * |
| 107 | * This implies that filters for multiple multicast recipients must |
| 108 | * all be inserted with the same priority and @replace_equal = %false. |
Ben Hutchings | add7247 | 2012-11-08 01:46:53 +0000 | [diff] [blame] | 109 | */ |
| 110 | static inline s32 efx_filter_insert_filter(struct efx_nic *efx, |
| 111 | struct efx_filter_spec *spec, |
| 112 | bool replace_equal) |
| 113 | { |
| 114 | return efx->type->filter_insert(efx, spec, replace_equal); |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * efx_filter_remove_id_safe - remove a filter by ID, carefully |
| 119 | * @efx: NIC from which to remove the filter |
| 120 | * @priority: Priority of filter, as passed to @efx_filter_insert_filter |
| 121 | * @filter_id: ID of filter, as returned by @efx_filter_insert_filter |
| 122 | * |
| 123 | * This function will range-check @filter_id, so it is safe to call |
| 124 | * with a value passed from userland. |
| 125 | */ |
| 126 | static inline int efx_filter_remove_id_safe(struct efx_nic *efx, |
| 127 | enum efx_filter_priority priority, |
| 128 | u32 filter_id) |
| 129 | { |
| 130 | return efx->type->filter_remove_safe(efx, priority, filter_id); |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * efx_filter_get_filter_safe - retrieve a filter by ID, carefully |
| 135 | * @efx: NIC from which to remove the filter |
| 136 | * @priority: Priority of filter, as passed to @efx_filter_insert_filter |
| 137 | * @filter_id: ID of filter, as returned by @efx_filter_insert_filter |
| 138 | * @spec: Buffer in which to store filter specification |
| 139 | * |
| 140 | * This function will range-check @filter_id, so it is safe to call |
| 141 | * with a value passed from userland. |
| 142 | */ |
| 143 | static inline int |
| 144 | efx_filter_get_filter_safe(struct efx_nic *efx, |
| 145 | enum efx_filter_priority priority, |
| 146 | u32 filter_id, struct efx_filter_spec *spec) |
| 147 | { |
| 148 | return efx->type->filter_get_safe(efx, priority, filter_id, spec); |
| 149 | } |
| 150 | |
Ben Hutchings | add7247 | 2012-11-08 01:46:53 +0000 | [diff] [blame] | 151 | static inline u32 efx_filter_count_rx_used(struct efx_nic *efx, |
| 152 | enum efx_filter_priority priority) |
| 153 | { |
| 154 | return efx->type->filter_count_rx_used(efx, priority); |
| 155 | } |
| 156 | static inline u32 efx_filter_get_rx_id_limit(struct efx_nic *efx) |
| 157 | { |
| 158 | return efx->type->filter_get_rx_id_limit(efx); |
| 159 | } |
| 160 | static inline s32 efx_filter_get_rx_ids(struct efx_nic *efx, |
| 161 | enum efx_filter_priority priority, |
| 162 | u32 *buf, u32 size) |
| 163 | { |
| 164 | return efx->type->filter_get_rx_ids(efx, priority, buf, size); |
| 165 | } |
Ben Hutchings | 64d8ad6 | 2011-01-05 00:50:41 +0000 | [diff] [blame] | 166 | #ifdef CONFIG_RFS_ACCEL |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 167 | int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, |
| 168 | u16 rxq_index, u32 flow_id); |
| 169 | bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned quota); |
Edward Cree | 3af0f34 | 2018-03-27 17:41:59 +0100 | [diff] [blame] | 170 | static inline void efx_filter_rfs_expire(struct work_struct *data) |
Ben Hutchings | 64d8ad6 | 2011-01-05 00:50:41 +0000 | [diff] [blame] | 171 | { |
Edward Cree | 3af0f34 | 2018-03-27 17:41:59 +0100 | [diff] [blame] | 172 | struct efx_channel *channel = container_of(data, struct efx_channel, |
| 173 | filter_work); |
| 174 | |
Ben Hutchings | 64d8ad6 | 2011-01-05 00:50:41 +0000 | [diff] [blame] | 175 | if (channel->rfs_filters_added >= 60 && |
| 176 | __efx_filter_rfs_expire(channel->efx, 100)) |
| 177 | channel->rfs_filters_added -= 60; |
| 178 | } |
| 179 | #define efx_filter_rfs_enabled() 1 |
| 180 | #else |
Edward Cree | 3af0f34 | 2018-03-27 17:41:59 +0100 | [diff] [blame] | 181 | static inline void efx_filter_rfs_expire(struct work_struct *data) {} |
Ben Hutchings | 64d8ad6 | 2011-01-05 00:50:41 +0000 | [diff] [blame] | 182 | #define efx_filter_rfs_enabled() 0 |
| 183 | #endif |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 184 | bool efx_filter_is_mc_recipient(const struct efx_filter_spec *spec); |
Ben Hutchings | 64eebcf | 2010-09-20 08:43:07 +0000 | [diff] [blame] | 185 | |
Edward Cree | f8d6203 | 2018-04-24 17:09:30 +0100 | [diff] [blame] | 186 | bool efx_filter_spec_equal(const struct efx_filter_spec *left, |
| 187 | const struct efx_filter_spec *right); |
| 188 | u32 efx_filter_spec_hash(const struct efx_filter_spec *spec); |
| 189 | |
| 190 | #ifdef CONFIG_RFS_ACCEL |
| 191 | bool efx_rps_check_rule(struct efx_arfs_rule *rule, unsigned int filter_idx, |
| 192 | bool *force); |
| 193 | |
| 194 | struct efx_arfs_rule *efx_rps_hash_find(struct efx_nic *efx, |
| 195 | const struct efx_filter_spec *spec); |
| 196 | |
| 197 | /* @new is written to indicate if entry was newly added (true) or if an old |
| 198 | * entry was found and returned (false). |
| 199 | */ |
| 200 | struct efx_arfs_rule *efx_rps_hash_add(struct efx_nic *efx, |
| 201 | const struct efx_filter_spec *spec, |
| 202 | bool *new); |
| 203 | |
| 204 | void efx_rps_hash_del(struct efx_nic *efx, const struct efx_filter_spec *spec); |
| 205 | #endif |
| 206 | |
Edward Cree | 42356d9 | 2018-03-08 15:45:17 +0000 | [diff] [blame] | 207 | /* RSS contexts */ |
Edward Cree | e0a65e3 | 2018-03-27 17:44:36 +0100 | [diff] [blame] | 208 | struct efx_rss_context *efx_alloc_rss_context_entry(struct efx_nic *efx); |
| 209 | struct efx_rss_context *efx_find_rss_context_entry(struct efx_nic *efx, u32 id); |
Edward Cree | 42356d9 | 2018-03-08 15:45:17 +0000 | [diff] [blame] | 210 | void efx_free_rss_context_entry(struct efx_rss_context *ctx); |
| 211 | static inline bool efx_rss_active(struct efx_rss_context *ctx) |
| 212 | { |
| 213 | return ctx->context_id != EFX_EF10_RSS_CONTEXT_INVALID; |
| 214 | } |
| 215 | |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 216 | /* Channels */ |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 217 | int efx_channel_dummy_op_int(struct efx_channel *channel); |
| 218 | void efx_channel_dummy_op_void(struct efx_channel *channel); |
| 219 | int efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries); |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 220 | |
| 221 | /* Ports */ |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 222 | int efx_reconfigure_port(struct efx_nic *efx); |
| 223 | int __efx_reconfigure_port(struct efx_nic *efx); |
Ben Hutchings | 8c8661e | 2008-09-01 12:49:02 +0100 | [diff] [blame] | 224 | |
Ben Hutchings | f5e7adc | 2009-11-23 16:07:30 +0000 | [diff] [blame] | 225 | /* Ethtool support */ |
Ben Hutchings | f5e7adc | 2009-11-23 16:07:30 +0000 | [diff] [blame] | 226 | extern const struct ethtool_ops efx_ethtool_ops; |
| 227 | |
Ben Hutchings | 8c8661e | 2008-09-01 12:49:02 +0100 | [diff] [blame] | 228 | /* Reset handling */ |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 229 | int efx_reset(struct efx_nic *efx, enum reset_type method); |
| 230 | void efx_reset_down(struct efx_nic *efx, enum reset_type method); |
| 231 | int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok); |
| 232 | int efx_try_recovery(struct efx_nic *efx); |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 233 | |
| 234 | /* Global */ |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 235 | void efx_schedule_reset(struct efx_nic *efx, enum reset_type type); |
Bert Kenward | 539de7c | 2016-08-11 13:02:09 +0100 | [diff] [blame] | 236 | unsigned int efx_usecs_to_ticks(struct efx_nic *efx, unsigned int usecs); |
| 237 | unsigned int efx_ticks_to_usecs(struct efx_nic *efx, unsigned int ticks); |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 238 | int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs, |
| 239 | unsigned int rx_usecs, bool rx_adaptive, |
| 240 | bool rx_may_override_tx); |
| 241 | void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs, |
| 242 | unsigned int *rx_usecs, bool *rx_adaptive); |
Alexandre Rames | 3676326 | 2014-07-22 14:03:25 +0100 | [diff] [blame] | 243 | void efx_stop_eventq(struct efx_channel *channel); |
| 244 | void efx_start_eventq(struct efx_channel *channel); |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 245 | |
| 246 | /* Dummy PHY ops for PHY drivers */ |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 247 | int efx_port_dummy_op_int(struct efx_nic *efx); |
| 248 | void efx_port_dummy_op_void(struct efx_nic *efx); |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 249 | |
Edward Cree | e4d112e | 2014-07-15 11:58:12 +0100 | [diff] [blame] | 250 | /* Update the generic software stats in the passed stats array */ |
| 251 | void efx_update_sw_stats(struct efx_nic *efx, u64 *stats); |
| 252 | |
Ben Hutchings | f415072 | 2008-11-04 20:34:28 +0000 | [diff] [blame] | 253 | /* MTD */ |
| 254 | #ifdef CONFIG_SFC_MTD |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 255 | int efx_mtd_add(struct efx_nic *efx, struct efx_mtd_partition *parts, |
| 256 | size_t n_parts, size_t sizeof_part); |
Ben Hutchings | 45a3fd5 | 2012-11-28 04:38:14 +0000 | [diff] [blame] | 257 | static inline int efx_mtd_probe(struct efx_nic *efx) |
| 258 | { |
| 259 | return efx->type->mtd_probe(efx); |
| 260 | } |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 261 | void efx_mtd_rename(struct efx_nic *efx); |
| 262 | void efx_mtd_remove(struct efx_nic *efx); |
Ben Hutchings | f415072 | 2008-11-04 20:34:28 +0000 | [diff] [blame] | 263 | #else |
| 264 | static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; } |
| 265 | static inline void efx_mtd_rename(struct efx_nic *efx) {} |
| 266 | static inline void efx_mtd_remove(struct efx_nic *efx) {} |
| 267 | #endif |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 268 | |
Shradha Shah | 7fa8d54 | 2015-05-06 00:55:13 +0100 | [diff] [blame] | 269 | #ifdef CONFIG_SFC_SRIOV |
| 270 | static inline unsigned int efx_vf_size(struct efx_nic *efx) |
| 271 | { |
| 272 | return 1 << efx->vi_scale; |
| 273 | } |
| 274 | #endif |
| 275 | |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 276 | static inline void efx_schedule_channel(struct efx_channel *channel) |
| 277 | { |
Ben Hutchings | 62776d0 | 2010-06-23 11:30:07 +0000 | [diff] [blame] | 278 | netif_vdbg(channel->efx, intr, channel->efx->net_dev, |
| 279 | "channel %d scheduling NAPI poll on CPU%d\n", |
| 280 | channel->channel, raw_smp_processor_id()); |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 281 | |
Ben Hutchings | 288379f | 2009-01-19 16:43:59 -0800 | [diff] [blame] | 282 | napi_schedule(&channel->napi_str); |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 283 | } |
| 284 | |
Ben Hutchings | 1646a6f3 | 2012-01-05 20:14:10 +0000 | [diff] [blame] | 285 | static inline void efx_schedule_channel_irq(struct efx_channel *channel) |
| 286 | { |
Ben Hutchings | dd40781 | 2012-02-28 23:40:21 +0000 | [diff] [blame] | 287 | channel->event_test_cpu = raw_smp_processor_id(); |
Ben Hutchings | 1646a6f3 | 2012-01-05 20:14:10 +0000 | [diff] [blame] | 288 | efx_schedule_channel(channel); |
| 289 | } |
| 290 | |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 291 | void efx_link_status_changed(struct efx_nic *efx); |
Edward Cree | c2ab85d | 2018-01-10 18:00:14 +0000 | [diff] [blame] | 292 | void efx_link_set_advertising(struct efx_nic *efx, |
| 293 | const unsigned long *advertising); |
| 294 | void efx_link_clear_advertising(struct efx_nic *efx); |
Joe Perches | 00aef98 | 2013-09-23 11:37:59 -0700 | [diff] [blame] | 295 | void efx_link_set_wanted_fc(struct efx_nic *efx, u8); |
Steve Hodgson | fdaa9ae | 2009-11-28 05:34:05 +0000 | [diff] [blame] | 296 | |
Daniel Pieczko | c2f3b8e | 2012-10-17 13:21:23 +0100 | [diff] [blame] | 297 | static inline void efx_device_detach_sync(struct efx_nic *efx) |
| 298 | { |
| 299 | struct net_device *dev = efx->net_dev; |
| 300 | |
| 301 | /* Lock/freeze all TX queues so that we can be sure the |
| 302 | * TX scheduler is stopped when we're done and before |
| 303 | * netif_device_present() becomes false. |
| 304 | */ |
Ben Hutchings | 35205b2 | 2013-03-05 01:03:47 +0000 | [diff] [blame] | 305 | netif_tx_lock_bh(dev); |
Daniel Pieczko | c2f3b8e | 2012-10-17 13:21:23 +0100 | [diff] [blame] | 306 | netif_device_detach(dev); |
Ben Hutchings | 35205b2 | 2013-03-05 01:03:47 +0000 | [diff] [blame] | 307 | netif_tx_unlock_bh(dev); |
Daniel Pieczko | c2f3b8e | 2012-10-17 13:21:23 +0100 | [diff] [blame] | 308 | } |
| 309 | |
Peter Dunning | 9c568fd | 2017-02-17 15:50:43 +0000 | [diff] [blame] | 310 | static inline void efx_device_attach_if_not_resetting(struct efx_nic *efx) |
| 311 | { |
| 312 | if ((efx->state != STATE_DISABLED) && !efx->reset_pending) |
| 313 | netif_device_attach(efx->net_dev); |
| 314 | } |
| 315 | |
Edward Cree | dd98708 | 2016-06-15 17:43:43 +0100 | [diff] [blame] | 316 | static inline bool efx_rwsem_assert_write_locked(struct rw_semaphore *sem) |
| 317 | { |
| 318 | if (WARN_ON(down_read_trylock(sem))) { |
| 319 | up_read(sem); |
| 320 | return false; |
| 321 | } |
| 322 | return true; |
| 323 | } |
| 324 | |
Ben Hutchings | 8ceee66 | 2008-04-27 12:55:59 +0100 | [diff] [blame] | 325 | #endif /* EFX_EFX_H */ |