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d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
8ceee660 | 2 | /**************************************************************************** |
f7a6d2c4 | 3 | * Driver for Solarflare network controllers and boards |
8ceee660 | 4 | * Copyright 2005-2006 Fen Systems Ltd. |
f7a6d2c4 | 5 | * Copyright 2005-2013 Solarflare Communications Inc. |
8ceee660 BH |
6 | */ |
7 | ||
8 | /* Common definitions for all Efx net driver code */ | |
9 | ||
10 | #ifndef EFX_NET_DRIVER_H | |
11 | #define EFX_NET_DRIVER_H | |
12 | ||
8ceee660 BH |
13 | #include <linux/netdevice.h> |
14 | #include <linux/etherdevice.h> | |
15 | #include <linux/ethtool.h> | |
16 | #include <linux/if_vlan.h> | |
90d683af | 17 | #include <linux/timer.h> |
68e7f45e | 18 | #include <linux/mdio.h> |
8ceee660 BH |
19 | #include <linux/list.h> |
20 | #include <linux/pci.h> | |
21 | #include <linux/device.h> | |
22 | #include <linux/highmem.h> | |
23 | #include <linux/workqueue.h> | |
cd2d5b52 | 24 | #include <linux/mutex.h> |
0d322413 | 25 | #include <linux/rwsem.h> |
10ed61c4 | 26 | #include <linux/vmalloc.h> |
37b5a603 | 27 | #include <linux/i2c.h> |
45a3fd55 | 28 | #include <linux/mtd/mtd.h> |
36763266 | 29 | #include <net/busy_poll.h> |
8ceee660 BH |
30 | |
31 | #include "enum.h" | |
32 | #include "bitfield.h" | |
add72477 | 33 | #include "filter.h" |
8ceee660 | 34 | |
8ceee660 BH |
35 | /************************************************************************** |
36 | * | |
37 | * Build definitions | |
38 | * | |
39 | **************************************************************************/ | |
c5d5f5fd | 40 | |
5a6681e2 | 41 | #define EFX_DRIVER_VERSION "4.1" |
8ceee660 | 42 | |
5f3f9d6c | 43 | #ifdef DEBUG |
e01b16a7 | 44 | #define EFX_WARN_ON_ONCE_PARANOID(x) WARN_ON_ONCE(x) |
8ceee660 BH |
45 | #define EFX_WARN_ON_PARANOID(x) WARN_ON(x) |
46 | #else | |
e01b16a7 | 47 | #define EFX_WARN_ON_ONCE_PARANOID(x) do {} while (0) |
8ceee660 BH |
48 | #define EFX_WARN_ON_PARANOID(x) do {} while (0) |
49 | #endif | |
50 | ||
8ceee660 BH |
51 | /************************************************************************** |
52 | * | |
53 | * Efx data structures | |
54 | * | |
55 | **************************************************************************/ | |
56 | ||
a16e5b24 | 57 | #define EFX_MAX_CHANNELS 32U |
8ceee660 | 58 | #define EFX_MAX_RX_QUEUES EFX_MAX_CHANNELS |
cd2d5b52 | 59 | #define EFX_EXTRA_CHANNEL_IOV 0 |
7c236c43 SH |
60 | #define EFX_EXTRA_CHANNEL_PTP 1 |
61 | #define EFX_MAX_EXTRA_CHANNELS 2U | |
8ceee660 | 62 | |
a4900ac9 BH |
63 | /* Checksum generation is a per-queue option in hardware, so each |
64 | * queue visible to the networking core is backed by two hardware TX | |
65 | * queues. */ | |
94b274bf BH |
66 | #define EFX_MAX_TX_TC 2 |
67 | #define EFX_MAX_CORE_TX_QUEUES (EFX_MAX_TX_TC * EFX_MAX_CHANNELS) | |
68 | #define EFX_TXQ_TYPE_OFFLOAD 1 /* flag */ | |
69 | #define EFX_TXQ_TYPE_HIGHPRI 2 /* flag */ | |
70 | #define EFX_TXQ_TYPES 4 | |
71 | #define EFX_MAX_TX_QUEUES (EFX_TXQ_TYPES * EFX_MAX_CHANNELS) | |
60ac1065 | 72 | |
85740cdf BH |
73 | /* Maximum possible MTU the driver supports */ |
74 | #define EFX_MAX_MTU (9 * 1024) | |
75 | ||
72a31d85 BK |
76 | /* Minimum MTU, from RFC791 (IP) */ |
77 | #define EFX_MIN_MTU 68 | |
78 | ||
950c54df BH |
79 | /* Size of an RX scatter buffer. Small enough to pack 2 into a 4K page, |
80 | * and should be a multiple of the cache line size. | |
81 | */ | |
82 | #define EFX_RX_USR_BUF_SIZE (2048 - 256) | |
83 | ||
84 | /* If possible, we should ensure cache line alignment at start and end | |
85 | * of every buffer. Otherwise, we just need to ensure 4-byte | |
86 | * alignment of the network header. | |
87 | */ | |
88 | #if NET_IP_ALIGN == 0 | |
89 | #define EFX_RX_BUF_ALIGNMENT L1_CACHE_BYTES | |
90 | #else | |
91 | #define EFX_RX_BUF_ALIGNMENT 4 | |
92 | #endif | |
85740cdf | 93 | |
7c236c43 SH |
94 | /* Forward declare Precision Time Protocol (PTP) support structure. */ |
95 | struct efx_ptp_data; | |
9ec06595 | 96 | struct hwtstamp_config; |
7c236c43 | 97 | |
d4f2cecc BH |
98 | struct efx_self_tests; |
99 | ||
8ceee660 | 100 | /** |
caa75586 BH |
101 | * struct efx_buffer - A general-purpose DMA buffer |
102 | * @addr: host base address of the buffer | |
8ceee660 BH |
103 | * @dma_addr: DMA base address of the buffer |
104 | * @len: Buffer length, in bytes | |
8ceee660 | 105 | * |
caa75586 BH |
106 | * The NIC uses these buffers for its interrupt status registers and |
107 | * MAC stats dumps. | |
8ceee660 | 108 | */ |
caa75586 | 109 | struct efx_buffer { |
8ceee660 BH |
110 | void *addr; |
111 | dma_addr_t dma_addr; | |
112 | unsigned int len; | |
caa75586 BH |
113 | }; |
114 | ||
115 | /** | |
116 | * struct efx_special_buffer - DMA buffer entered into buffer table | |
117 | * @buf: Standard &struct efx_buffer | |
118 | * @index: Buffer index within controller;s buffer table | |
119 | * @entries: Number of buffer table entries | |
120 | * | |
121 | * The NIC has a buffer table that maps buffers of size %EFX_BUF_SIZE. | |
122 | * Event and descriptor rings are addressed via one or more buffer | |
123 | * table entries (and so can be physically non-contiguous, although we | |
124 | * currently do not take advantage of that). On Falcon and Siena we | |
125 | * have to take care of allocating and initialising the entries | |
126 | * ourselves. On later hardware this is managed by the firmware and | |
127 | * @index and @entries are left as 0. | |
128 | */ | |
129 | struct efx_special_buffer { | |
130 | struct efx_buffer buf; | |
5bbe2f4f BH |
131 | unsigned int index; |
132 | unsigned int entries; | |
8ceee660 BH |
133 | }; |
134 | ||
135 | /** | |
7668ff9c BH |
136 | * struct efx_tx_buffer - buffer state for a TX descriptor |
137 | * @skb: When @flags & %EFX_TX_BUF_SKB, the associated socket buffer to be | |
138 | * freed when descriptor completes | |
ba8977bd | 139 | * @option: When @flags & %EFX_TX_BUF_OPTION, a NIC-specific option descriptor. |
8ceee660 | 140 | * @dma_addr: DMA address of the fragment. |
7668ff9c | 141 | * @flags: Flags for allocation and DMA mapping type |
8ceee660 BH |
142 | * @len: Length of this fragment. |
143 | * This field is zero when the queue slot is empty. | |
8ceee660 | 144 | * @unmap_len: Length of this fragment to unmap |
2acdb92e AR |
145 | * @dma_offset: Offset of @dma_addr from the address of the backing DMA mapping. |
146 | * Only valid if @unmap_len != 0. | |
8ceee660 BH |
147 | */ |
148 | struct efx_tx_buffer { | |
e3739099 | 149 | const struct sk_buff *skb; |
ba8977bd BH |
150 | union { |
151 | efx_qword_t option; | |
152 | dma_addr_t dma_addr; | |
153 | }; | |
7668ff9c | 154 | unsigned short flags; |
8ceee660 | 155 | unsigned short len; |
8ceee660 | 156 | unsigned short unmap_len; |
2acdb92e | 157 | unsigned short dma_offset; |
8ceee660 | 158 | }; |
7668ff9c BH |
159 | #define EFX_TX_BUF_CONT 1 /* not last descriptor of packet */ |
160 | #define EFX_TX_BUF_SKB 2 /* buffer is last part of skb */ | |
7668ff9c | 161 | #define EFX_TX_BUF_MAP_SINGLE 8 /* buffer was mapped with dma_map_single() */ |
ba8977bd | 162 | #define EFX_TX_BUF_OPTION 0x10 /* empty buffer for option descriptor */ |
8ceee660 BH |
163 | |
164 | /** | |
165 | * struct efx_tx_queue - An Efx TX queue | |
166 | * | |
167 | * This is a ring buffer of TX fragments. | |
168 | * Since the TX completion path always executes on the same | |
169 | * CPU and the xmit path can operate on different CPUs, | |
170 | * performance is increased by ensuring that the completion | |
171 | * path and the xmit path operate on different cache lines. | |
172 | * This is particularly important if the xmit path is always | |
173 | * executing on one CPU which is different from the completion | |
174 | * path. There is also a cache line for members which are | |
175 | * read but not written on the fast path. | |
176 | * | |
177 | * @efx: The associated Efx NIC | |
178 | * @queue: DMA queue number | |
93171b14 | 179 | * @tso_version: Version of TSO in use for this queue. |
8ceee660 | 180 | * @channel: The associated channel |
c04bfc6b | 181 | * @core_txq: The networking core TX queue structure |
8ceee660 | 182 | * @buffer: The software buffer ring |
e9117e50 BK |
183 | * @cb_page: Array of pages of copy buffers. Carved up according to |
184 | * %EFX_TX_CB_ORDER into %EFX_TX_CB_SIZE-sized chunks. | |
8ceee660 | 185 | * @txd: The hardware descriptor ring |
ecc910f5 | 186 | * @ptr_mask: The size of the ring minus 1. |
183233be BH |
187 | * @piobuf: PIO buffer region for this TX queue (shared with its partner). |
188 | * Size of the region is efx_piobuf_size. | |
189 | * @piobuf_offset: Buffer offset to be specified in PIO descriptors | |
94b274bf | 190 | * @initialised: Has hardware queue been initialised? |
b9b603d4 | 191 | * @timestamping: Is timestamping enabled for this channel? |
e9117e50 BK |
192 | * @handle_tso: TSO xmit preparation handler. Sets up the TSO metadata and |
193 | * may also map tx data, depending on the nature of the TSO implementation. | |
8ceee660 BH |
194 | * @read_count: Current read pointer. |
195 | * This is the number of buffers that have been removed from both rings. | |
cd38557d BH |
196 | * @old_write_count: The value of @write_count when last checked. |
197 | * This is here for performance reasons. The xmit path will | |
198 | * only get the up-to-date value of @write_count if this | |
199 | * variable indicates that the queue is empty. This is to | |
200 | * avoid cache-line ping-pong between the xmit path and the | |
201 | * completion path. | |
02e12165 | 202 | * @merge_events: Number of TX merged completion events |
b9b603d4 MH |
203 | * @completed_desc_ptr: Most recent completed pointer - only used with |
204 | * timestamping. | |
205 | * @completed_timestamp_major: Top part of the most recent tx timestamp. | |
206 | * @completed_timestamp_minor: Low part of the most recent tx timestamp. | |
8ceee660 BH |
207 | * @insert_count: Current insert pointer |
208 | * This is the number of buffers that have been added to the | |
209 | * software ring. | |
210 | * @write_count: Current write pointer | |
211 | * This is the number of buffers that have been added to the | |
212 | * hardware ring. | |
de1deff9 EC |
213 | * @packet_write_count: Completable write pointer |
214 | * This is the write pointer of the last packet written. | |
215 | * Normally this will equal @write_count, but as option descriptors | |
216 | * don't produce completion events, they won't update this. | |
217 | * Filled in iff @efx->type->option_descriptors; only used for PIO. | |
218 | * Thus, this is written and used on EF10, and neither on farch. | |
8ceee660 BH |
219 | * @old_read_count: The value of read_count when last checked. |
220 | * This is here for performance reasons. The xmit path will | |
221 | * only get the up-to-date value of read_count if this | |
222 | * variable indicates that the queue is full. This is to | |
223 | * avoid cache-line ping-pong between the xmit path and the | |
224 | * completion path. | |
b9b39b62 BH |
225 | * @tso_bursts: Number of times TSO xmit invoked by kernel |
226 | * @tso_long_headers: Number of packets with headers too long for standard | |
227 | * blocks | |
228 | * @tso_packets: Number of packets via the TSO xmit path | |
46d1efd8 | 229 | * @tso_fallbacks: Number of times TSO fallback used |
cd38557d | 230 | * @pushes: Number of times the TX push feature has been used |
ee45fd92 | 231 | * @pio_packets: Number of times the TX PIO feature has been used |
b2663a4f | 232 | * @xmit_more_available: Are any packets waiting to be pushed to the NIC |
e9117e50 | 233 | * @cb_packets: Number of times the TX copybreak feature has been used |
cd38557d BH |
234 | * @empty_read_count: If the completion path has seen the queue as empty |
235 | * and the transmission path has not yet checked this, the value of | |
236 | * @read_count bitwise-added to %EFX_EMPTY_COUNT_VALID; otherwise 0. | |
8ceee660 BH |
237 | */ |
238 | struct efx_tx_queue { | |
239 | /* Members which don't change on the fast path */ | |
240 | struct efx_nic *efx ____cacheline_aligned_in_smp; | |
a4900ac9 | 241 | unsigned queue; |
93171b14 | 242 | unsigned int tso_version; |
8ceee660 | 243 | struct efx_channel *channel; |
c04bfc6b | 244 | struct netdev_queue *core_txq; |
8ceee660 | 245 | struct efx_tx_buffer *buffer; |
e9117e50 | 246 | struct efx_buffer *cb_page; |
8ceee660 | 247 | struct efx_special_buffer txd; |
ecc910f5 | 248 | unsigned int ptr_mask; |
183233be BH |
249 | void __iomem *piobuf; |
250 | unsigned int piobuf_offset; | |
94b274bf | 251 | bool initialised; |
b9b603d4 | 252 | bool timestamping; |
e9117e50 BK |
253 | |
254 | /* Function pointers used in the fast path. */ | |
255 | int (*handle_tso)(struct efx_tx_queue*, struct sk_buff*, bool *); | |
8ceee660 BH |
256 | |
257 | /* Members used mainly on the completion path */ | |
258 | unsigned int read_count ____cacheline_aligned_in_smp; | |
cd38557d | 259 | unsigned int old_write_count; |
02e12165 | 260 | unsigned int merge_events; |
c936835c PD |
261 | unsigned int bytes_compl; |
262 | unsigned int pkts_compl; | |
b9b603d4 MH |
263 | unsigned int completed_desc_ptr; |
264 | u32 completed_timestamp_major; | |
265 | u32 completed_timestamp_minor; | |
8ceee660 BH |
266 | |
267 | /* Members used only on the xmit path */ | |
268 | unsigned int insert_count ____cacheline_aligned_in_smp; | |
269 | unsigned int write_count; | |
de1deff9 | 270 | unsigned int packet_write_count; |
8ceee660 | 271 | unsigned int old_read_count; |
b9b39b62 BH |
272 | unsigned int tso_bursts; |
273 | unsigned int tso_long_headers; | |
274 | unsigned int tso_packets; | |
46d1efd8 | 275 | unsigned int tso_fallbacks; |
cd38557d | 276 | unsigned int pushes; |
ee45fd92 | 277 | unsigned int pio_packets; |
b2663a4f | 278 | bool xmit_more_available; |
e9117e50 | 279 | unsigned int cb_packets; |
8ccf3800 AR |
280 | /* Statistics to supplement MAC stats */ |
281 | unsigned long tx_packets; | |
cd38557d BH |
282 | |
283 | /* Members shared between paths and sometimes updated */ | |
284 | unsigned int empty_read_count ____cacheline_aligned_in_smp; | |
285 | #define EFX_EMPTY_COUNT_VALID 0x80000000 | |
525d9e82 | 286 | atomic_t flush_outstanding; |
8ceee660 BH |
287 | }; |
288 | ||
e9117e50 BK |
289 | #define EFX_TX_CB_ORDER 7 |
290 | #define EFX_TX_CB_SIZE (1 << EFX_TX_CB_ORDER) - NET_IP_ALIGN | |
291 | ||
8ceee660 BH |
292 | /** |
293 | * struct efx_rx_buffer - An Efx RX data buffer | |
294 | * @dma_addr: DMA base address of the buffer | |
97d48a10 | 295 | * @page: The associated page buffer. |
db339569 | 296 | * Will be %NULL if the buffer slot is currently free. |
b74e3e8c BH |
297 | * @page_offset: If pending: offset in @page of DMA base address. |
298 | * If completed: offset in @page of Ethernet header. | |
80c2e716 BH |
299 | * @len: If pending: length for DMA descriptor. |
300 | * If completed: received length, excluding hash prefix. | |
85740cdf BH |
301 | * @flags: Flags for buffer and packet state. These are only set on the |
302 | * first buffer of a scattered packet. | |
8ceee660 BH |
303 | */ |
304 | struct efx_rx_buffer { | |
305 | dma_addr_t dma_addr; | |
97d48a10 | 306 | struct page *page; |
b590ace0 BH |
307 | u16 page_offset; |
308 | u16 len; | |
db339569 | 309 | u16 flags; |
8ceee660 | 310 | }; |
179ea7f0 | 311 | #define EFX_RX_BUF_LAST_IN_PAGE 0x0001 |
db339569 BH |
312 | #define EFX_RX_PKT_CSUMMED 0x0002 |
313 | #define EFX_RX_PKT_DISCARD 0x0004 | |
d07df8ec | 314 | #define EFX_RX_PKT_TCP 0x0040 |
3dced740 | 315 | #define EFX_RX_PKT_PREFIX_LEN 0x0080 /* length is in prefix only */ |
da50ae2e | 316 | #define EFX_RX_PKT_CSUM_LEVEL 0x0200 |
8ceee660 | 317 | |
62b330ba SH |
318 | /** |
319 | * struct efx_rx_page_state - Page-based rx buffer state | |
320 | * | |
321 | * Inserted at the start of every page allocated for receive buffers. | |
322 | * Used to facilitate sharing dma mappings between recycled rx buffers | |
323 | * and those passed up to the kernel. | |
324 | * | |
62b330ba SH |
325 | * @dma_addr: The dma address of this page. |
326 | */ | |
327 | struct efx_rx_page_state { | |
62b330ba SH |
328 | dma_addr_t dma_addr; |
329 | ||
330 | unsigned int __pad[0] ____cacheline_aligned; | |
331 | }; | |
332 | ||
8ceee660 BH |
333 | /** |
334 | * struct efx_rx_queue - An Efx RX queue | |
335 | * @efx: The associated Efx NIC | |
79d68b37 SH |
336 | * @core_index: Index of network core RX queue. Will be >= 0 iff this |
337 | * is associated with a real RX queue. | |
8ceee660 BH |
338 | * @buffer: The software buffer ring |
339 | * @rxd: The hardware descriptor ring | |
ecc910f5 | 340 | * @ptr_mask: The size of the ring minus 1. |
d8aec745 | 341 | * @refill_enabled: Enable refill whenever fill level is low |
9f2cb71c BH |
342 | * @flush_pending: Set when a RX flush is pending. Has the same lifetime as |
343 | * @rxq_flush_pending. | |
8ceee660 BH |
344 | * @added_count: Number of buffers added to the receive queue. |
345 | * @notified_count: Number of buffers given to NIC (<= @added_count). | |
346 | * @removed_count: Number of buffers removed from the receive queue. | |
e8c68c0a JC |
347 | * @scatter_n: Used by NIC specific receive code. |
348 | * @scatter_len: Used by NIC specific receive code. | |
2768935a DP |
349 | * @page_ring: The ring to store DMA mapped pages for reuse. |
350 | * @page_add: Counter to calculate the write pointer for the recycle ring. | |
351 | * @page_remove: Counter to calculate the read pointer for the recycle ring. | |
352 | * @page_recycle_count: The number of pages that have been recycled. | |
353 | * @page_recycle_failed: The number of pages that couldn't be recycled because | |
354 | * the kernel still held a reference to them. | |
355 | * @page_recycle_full: The number of pages that were released because the | |
356 | * recycle ring was full. | |
357 | * @page_ptr_mask: The number of pages in the RX recycle ring minus 1. | |
8ceee660 BH |
358 | * @max_fill: RX descriptor maximum fill level (<= ring size) |
359 | * @fast_fill_trigger: RX descriptor fill level that will trigger a fast fill | |
360 | * (<= @max_fill) | |
8ceee660 BH |
361 | * @min_fill: RX descriptor minimum non-zero fill level. |
362 | * This records the minimum fill level observed when a ring | |
363 | * refill was triggered. | |
2768935a | 364 | * @recycle_count: RX buffer recycle counter. |
90d683af | 365 | * @slow_fill: Timer used to defer efx_nic_generate_fill_event(). |
8ceee660 BH |
366 | */ |
367 | struct efx_rx_queue { | |
368 | struct efx_nic *efx; | |
79d68b37 | 369 | int core_index; |
8ceee660 BH |
370 | struct efx_rx_buffer *buffer; |
371 | struct efx_special_buffer rxd; | |
ecc910f5 | 372 | unsigned int ptr_mask; |
d8aec745 | 373 | bool refill_enabled; |
9f2cb71c | 374 | bool flush_pending; |
8ceee660 | 375 | |
9bc2fc9b BH |
376 | unsigned int added_count; |
377 | unsigned int notified_count; | |
378 | unsigned int removed_count; | |
85740cdf | 379 | unsigned int scatter_n; |
e8c68c0a | 380 | unsigned int scatter_len; |
2768935a DP |
381 | struct page **page_ring; |
382 | unsigned int page_add; | |
383 | unsigned int page_remove; | |
384 | unsigned int page_recycle_count; | |
385 | unsigned int page_recycle_failed; | |
386 | unsigned int page_recycle_full; | |
387 | unsigned int page_ptr_mask; | |
8ceee660 BH |
388 | unsigned int max_fill; |
389 | unsigned int fast_fill_trigger; | |
8ceee660 BH |
390 | unsigned int min_fill; |
391 | unsigned int min_overfill; | |
2768935a | 392 | unsigned int recycle_count; |
90d683af | 393 | struct timer_list slow_fill; |
8ceee660 | 394 | unsigned int slow_fill_count; |
8ccf3800 AR |
395 | /* Statistics to supplement MAC stats */ |
396 | unsigned long rx_packets; | |
8ceee660 BH |
397 | }; |
398 | ||
bd9a265d JC |
399 | enum efx_sync_events_state { |
400 | SYNC_EVENTS_DISABLED = 0, | |
401 | SYNC_EVENTS_QUIESCENT, | |
402 | SYNC_EVENTS_REQUESTED, | |
403 | SYNC_EVENTS_VALID, | |
404 | }; | |
405 | ||
8ceee660 BH |
406 | /** |
407 | * struct efx_channel - An Efx channel | |
408 | * | |
409 | * A channel comprises an event queue, at least one TX queue, at least | |
410 | * one RX queue, and an associated tasklet for processing the event | |
411 | * queue. | |
412 | * | |
413 | * @efx: Associated Efx NIC | |
8ceee660 | 414 | * @channel: Channel instance number |
7f967c01 | 415 | * @type: Channel type definition |
be3fc09c | 416 | * @eventq_init: Event queue initialised flag |
8ceee660 BH |
417 | * @enabled: Channel enabled indicator |
418 | * @irq: IRQ number (MSI and MSI-X only) | |
539de7c5 | 419 | * @irq_moderation_us: IRQ moderation value (in microseconds) |
8ceee660 BH |
420 | * @napi_dev: Net device used with NAPI |
421 | * @napi_str: NAPI control structure | |
36763266 AR |
422 | * @state: state for NAPI vs busy polling |
423 | * @state_lock: lock protecting @state | |
8ceee660 | 424 | * @eventq: Event queue buffer |
ecc910f5 | 425 | * @eventq_mask: Event queue pointer mask |
8ceee660 | 426 | * @eventq_read_ptr: Event queue read pointer |
dd40781e | 427 | * @event_test_cpu: Last CPU to handle interrupt or test event for this channel |
6fb70fd1 BH |
428 | * @irq_count: Number of IRQs since last adaptive moderation decision |
429 | * @irq_mod_score: IRQ moderation score | |
3af0f342 | 430 | * @filter_work: Work item for efx_filter_rfs_expire() |
faf8dcc1 JC |
431 | * @rps_flow_id: Flow IDs of filters allocated for accelerated RFS, |
432 | * indexed by filter ID | |
8ceee660 | 433 | * @n_rx_tobe_disc: Count of RX_TOBE_DISC errors |
8ceee660 BH |
434 | * @n_rx_ip_hdr_chksum_err: Count of RX IP header checksum errors |
435 | * @n_rx_tcp_udp_chksum_err: Count of RX TCP and UDP checksum errors | |
c1ac403b | 436 | * @n_rx_mcast_mismatch: Count of unmatched multicast frames |
8ceee660 BH |
437 | * @n_rx_frm_trunc: Count of RX_FRM_TRUNC errors |
438 | * @n_rx_overlength: Count of RX_OVERLENGTH errors | |
439 | * @n_skbuff_leaks: Count of skbuffs leaked due to RX overrun | |
85740cdf BH |
440 | * @n_rx_nodesc_trunc: Number of RX packets truncated and then dropped due to |
441 | * lack of descriptors | |
8127d661 BH |
442 | * @n_rx_merge_events: Number of RX merged completion events |
443 | * @n_rx_merge_packets: Number of RX packets completed by merged events | |
85740cdf BH |
444 | * @rx_pkt_n_frags: Number of fragments in next packet to be delivered by |
445 | * __efx_rx_packet(), or zero if there is none | |
446 | * @rx_pkt_index: Ring index of first buffer for next packet to be delivered | |
447 | * by __efx_rx_packet(), if @rx_pkt_n_frags != 0 | |
e090bfb9 | 448 | * @rx_list: list of SKBs from current RX, awaiting processing |
8313aca3 | 449 | * @rx_queue: RX queue for this channel |
8313aca3 | 450 | * @tx_queue: TX queues for this channel |
bd9a265d JC |
451 | * @sync_events_state: Current state of sync events on this channel |
452 | * @sync_timestamp_major: Major part of the last ptp sync event | |
453 | * @sync_timestamp_minor: Minor part of the last ptp sync event | |
8ceee660 BH |
454 | */ |
455 | struct efx_channel { | |
456 | struct efx_nic *efx; | |
8ceee660 | 457 | int channel; |
7f967c01 | 458 | const struct efx_channel_type *type; |
be3fc09c | 459 | bool eventq_init; |
dc8cfa55 | 460 | bool enabled; |
8ceee660 | 461 | int irq; |
539de7c5 | 462 | unsigned int irq_moderation_us; |
8ceee660 BH |
463 | struct net_device *napi_dev; |
464 | struct napi_struct napi_str; | |
36763266 | 465 | #ifdef CONFIG_NET_RX_BUSY_POLL |
c0f9c7e4 BK |
466 | unsigned long busy_poll_state; |
467 | #endif | |
8ceee660 | 468 | struct efx_special_buffer eventq; |
ecc910f5 | 469 | unsigned int eventq_mask; |
8ceee660 | 470 | unsigned int eventq_read_ptr; |
dd40781e | 471 | int event_test_cpu; |
8ceee660 | 472 | |
6fb70fd1 BH |
473 | unsigned int irq_count; |
474 | unsigned int irq_mod_score; | |
64d8ad6d BH |
475 | #ifdef CONFIG_RFS_ACCEL |
476 | unsigned int rfs_filters_added; | |
3af0f342 | 477 | struct work_struct filter_work; |
faf8dcc1 JC |
478 | #define RPS_FLOW_ID_INVALID 0xFFFFFFFF |
479 | u32 *rps_flow_id; | |
64d8ad6d | 480 | #endif |
6fb70fd1 | 481 | |
a0ee3541 JC |
482 | unsigned int n_rx_tobe_disc; |
483 | unsigned int n_rx_ip_hdr_chksum_err; | |
484 | unsigned int n_rx_tcp_udp_chksum_err; | |
485 | unsigned int n_rx_outer_ip_hdr_chksum_err; | |
486 | unsigned int n_rx_outer_tcp_udp_chksum_err; | |
487 | unsigned int n_rx_inner_ip_hdr_chksum_err; | |
488 | unsigned int n_rx_inner_tcp_udp_chksum_err; | |
489 | unsigned int n_rx_eth_crc_err; | |
490 | unsigned int n_rx_mcast_mismatch; | |
491 | unsigned int n_rx_frm_trunc; | |
492 | unsigned int n_rx_overlength; | |
493 | unsigned int n_skbuff_leaks; | |
85740cdf | 494 | unsigned int n_rx_nodesc_trunc; |
8127d661 BH |
495 | unsigned int n_rx_merge_events; |
496 | unsigned int n_rx_merge_packets; | |
8ceee660 | 497 | |
85740cdf BH |
498 | unsigned int rx_pkt_n_frags; |
499 | unsigned int rx_pkt_index; | |
8ceee660 | 500 | |
e090bfb9 EC |
501 | struct list_head *rx_list; |
502 | ||
8313aca3 | 503 | struct efx_rx_queue rx_queue; |
94b274bf | 504 | struct efx_tx_queue tx_queue[EFX_TXQ_TYPES]; |
bd9a265d JC |
505 | |
506 | enum efx_sync_events_state sync_events_state; | |
507 | u32 sync_timestamp_major; | |
508 | u32 sync_timestamp_minor; | |
8ceee660 BH |
509 | }; |
510 | ||
d8291187 BH |
511 | /** |
512 | * struct efx_msi_context - Context for each MSI | |
513 | * @efx: The associated NIC | |
514 | * @index: Index of the channel/IRQ | |
515 | * @name: Name of the channel/IRQ | |
516 | * | |
517 | * Unlike &struct efx_channel, this is never reallocated and is always | |
518 | * safe for the IRQ handler to access. | |
519 | */ | |
520 | struct efx_msi_context { | |
521 | struct efx_nic *efx; | |
522 | unsigned int index; | |
523 | char name[IFNAMSIZ + 6]; | |
524 | }; | |
525 | ||
7f967c01 BH |
526 | /** |
527 | * struct efx_channel_type - distinguishes traffic and extra channels | |
528 | * @handle_no_channel: Handle failure to allocate an extra channel | |
529 | * @pre_probe: Set up extra state prior to initialisation | |
530 | * @post_remove: Tear down extra state after finalisation, if allocated. | |
531 | * May be called on channels that have not been probed. | |
532 | * @get_name: Generate the channel's name (used for its IRQ handler) | |
533 | * @copy: Copy the channel state prior to reallocation. May be %NULL if | |
534 | * reallocation is not supported. | |
c31e5f9f | 535 | * @receive_skb: Handle an skb ready to be passed to netif_receive_skb() |
2935e3c3 EC |
536 | * @want_txqs: Determine whether this channel should have TX queues |
537 | * created. If %NULL, TX queues are not created. | |
7f967c01 BH |
538 | * @keep_eventq: Flag for whether event queue should be kept initialised |
539 | * while the device is stopped | |
2935e3c3 EC |
540 | * @want_pio: Flag for whether PIO buffers should be linked to this |
541 | * channel's TX queues. | |
7f967c01 BH |
542 | */ |
543 | struct efx_channel_type { | |
544 | void (*handle_no_channel)(struct efx_nic *); | |
545 | int (*pre_probe)(struct efx_channel *); | |
c31e5f9f | 546 | void (*post_remove)(struct efx_channel *); |
7f967c01 BH |
547 | void (*get_name)(struct efx_channel *, char *buf, size_t len); |
548 | struct efx_channel *(*copy)(const struct efx_channel *); | |
4a74dc65 | 549 | bool (*receive_skb)(struct efx_channel *, struct sk_buff *); |
2935e3c3 | 550 | bool (*want_txqs)(struct efx_channel *); |
7f967c01 | 551 | bool keep_eventq; |
2935e3c3 | 552 | bool want_pio; |
7f967c01 BH |
553 | }; |
554 | ||
398468ed BH |
555 | enum efx_led_mode { |
556 | EFX_LED_OFF = 0, | |
557 | EFX_LED_ON = 1, | |
558 | EFX_LED_DEFAULT = 2 | |
559 | }; | |
560 | ||
c459302d BH |
561 | #define STRING_TABLE_LOOKUP(val, member) \ |
562 | ((val) < member ## _max) ? member ## _names[val] : "(invalid)" | |
563 | ||
18e83e4c | 564 | extern const char *const efx_loopback_mode_names[]; |
c459302d BH |
565 | extern const unsigned int efx_loopback_mode_max; |
566 | #define LOOPBACK_MODE(efx) \ | |
567 | STRING_TABLE_LOOKUP((efx)->loopback_mode, efx_loopback_mode) | |
568 | ||
18e83e4c | 569 | extern const char *const efx_reset_type_names[]; |
c459302d BH |
570 | extern const unsigned int efx_reset_type_max; |
571 | #define RESET_TYPE(type) \ | |
572 | STRING_TABLE_LOOKUP(type, efx_reset_type) | |
3273c2e8 | 573 | |
e5fbd977 JC |
574 | void efx_get_udp_tunnel_type_name(u16 type, char *buf, size_t buflen); |
575 | ||
8ceee660 BH |
576 | enum efx_int_mode { |
577 | /* Be careful if altering to correct macro below */ | |
578 | EFX_INT_MODE_MSIX = 0, | |
579 | EFX_INT_MODE_MSI = 1, | |
580 | EFX_INT_MODE_LEGACY = 2, | |
581 | EFX_INT_MODE_MAX /* Insert any new items before this */ | |
582 | }; | |
583 | #define EFX_INT_MODE_USE_MSI(x) (((x)->interrupt_mode) <= EFX_INT_MODE_MSI) | |
584 | ||
8ceee660 | 585 | enum nic_state { |
f16aeea0 BH |
586 | STATE_UNINIT = 0, /* device being probed/removed or is frozen */ |
587 | STATE_READY = 1, /* hardware ready and netdev registered */ | |
588 | STATE_DISABLED = 2, /* device disabled due to hardware errors */ | |
626950db | 589 | STATE_RECOVERY = 3, /* device recovering from PCI error */ |
8ceee660 BH |
590 | }; |
591 | ||
8ceee660 BH |
592 | /* Forward declaration */ |
593 | struct efx_nic; | |
594 | ||
595 | /* Pseudo bit-mask flow control field */ | |
b5626946 DM |
596 | #define EFX_FC_RX FLOW_CTRL_RX |
597 | #define EFX_FC_TX FLOW_CTRL_TX | |
598 | #define EFX_FC_AUTO 4 | |
8ceee660 | 599 | |
eb50c0d6 BH |
600 | /** |
601 | * struct efx_link_state - Current state of the link | |
602 | * @up: Link is up | |
603 | * @fd: Link is full-duplex | |
604 | * @fc: Actual flow control flags | |
605 | * @speed: Link speed (Mbps) | |
606 | */ | |
607 | struct efx_link_state { | |
608 | bool up; | |
609 | bool fd; | |
b5626946 | 610 | u8 fc; |
eb50c0d6 BH |
611 | unsigned int speed; |
612 | }; | |
613 | ||
fdaa9aed SH |
614 | static inline bool efx_link_state_equal(const struct efx_link_state *left, |
615 | const struct efx_link_state *right) | |
616 | { | |
617 | return left->up == right->up && left->fd == right->fd && | |
618 | left->fc == right->fc && left->speed == right->speed; | |
619 | } | |
620 | ||
8ceee660 BH |
621 | /** |
622 | * struct efx_phy_operations - Efx PHY operations table | |
c1c4f453 BH |
623 | * @probe: Probe PHY and initialise efx->mdio.mode_support, efx->mdio.mmds, |
624 | * efx->loopback_modes. | |
8ceee660 BH |
625 | * @init: Initialise PHY |
626 | * @fini: Shut down PHY | |
627 | * @reconfigure: Reconfigure PHY (e.g. for new link parameters) | |
fdaa9aed SH |
628 | * @poll: Update @link_state and report whether it changed. |
629 | * Serialised by the mac_lock. | |
7cafe8f8 PR |
630 | * @get_link_ksettings: Get ethtool settings. Serialised by the mac_lock. |
631 | * @set_link_ksettings: Set ethtool settings. Serialised by the mac_lock. | |
7f61e6c6 EC |
632 | * @get_fecparam: Get Forward Error Correction settings. Serialised by mac_lock. |
633 | * @set_fecparam: Set Forward Error Correction settings. Serialised by mac_lock. | |
af4ad9bc | 634 | * @set_npage_adv: Set abilities advertised in (Extended) Next Page |
04cc8cac | 635 | * (only needed where AN bit is set in mmds) |
4f16c073 | 636 | * @test_alive: Test that PHY is 'alive' (online) |
c1c4f453 | 637 | * @test_name: Get the name of a PHY-specific test/result |
4f16c073 | 638 | * @run_tests: Run tests and record results as appropriate (offline). |
1796721a | 639 | * Flags are the ethtool tests flags. |
8ceee660 BH |
640 | */ |
641 | struct efx_phy_operations { | |
c1c4f453 | 642 | int (*probe) (struct efx_nic *efx); |
8ceee660 BH |
643 | int (*init) (struct efx_nic *efx); |
644 | void (*fini) (struct efx_nic *efx); | |
ff3b00a0 | 645 | void (*remove) (struct efx_nic *efx); |
d3245b28 | 646 | int (*reconfigure) (struct efx_nic *efx); |
fdaa9aed | 647 | bool (*poll) (struct efx_nic *efx); |
7cafe8f8 PR |
648 | void (*get_link_ksettings)(struct efx_nic *efx, |
649 | struct ethtool_link_ksettings *cmd); | |
650 | int (*set_link_ksettings)(struct efx_nic *efx, | |
651 | const struct ethtool_link_ksettings *cmd); | |
7f61e6c6 EC |
652 | int (*get_fecparam)(struct efx_nic *efx, struct ethtool_fecparam *fec); |
653 | int (*set_fecparam)(struct efx_nic *efx, | |
654 | const struct ethtool_fecparam *fec); | |
af4ad9bc | 655 | void (*set_npage_adv) (struct efx_nic *efx, u32); |
4f16c073 | 656 | int (*test_alive) (struct efx_nic *efx); |
c1c4f453 | 657 | const char *(*test_name) (struct efx_nic *efx, unsigned int index); |
1796721a | 658 | int (*run_tests) (struct efx_nic *efx, int *results, unsigned flags); |
c087bd2c SH |
659 | int (*get_module_eeprom) (struct efx_nic *efx, |
660 | struct ethtool_eeprom *ee, | |
661 | u8 *data); | |
662 | int (*get_module_info) (struct efx_nic *efx, | |
663 | struct ethtool_modinfo *modinfo); | |
8ceee660 BH |
664 | }; |
665 | ||
f8b87c17 | 666 | /** |
49ce9c2c | 667 | * enum efx_phy_mode - PHY operating mode flags |
f8b87c17 BH |
668 | * @PHY_MODE_NORMAL: on and should pass traffic |
669 | * @PHY_MODE_TX_DISABLED: on with TX disabled | |
3e133c44 BH |
670 | * @PHY_MODE_LOW_POWER: set to low power through MDIO |
671 | * @PHY_MODE_OFF: switched off through external control | |
f8b87c17 BH |
672 | * @PHY_MODE_SPECIAL: on but will not pass traffic |
673 | */ | |
674 | enum efx_phy_mode { | |
675 | PHY_MODE_NORMAL = 0, | |
676 | PHY_MODE_TX_DISABLED = 1, | |
3e133c44 BH |
677 | PHY_MODE_LOW_POWER = 2, |
678 | PHY_MODE_OFF = 4, | |
f8b87c17 BH |
679 | PHY_MODE_SPECIAL = 8, |
680 | }; | |
681 | ||
682 | static inline bool efx_phy_mode_disabled(enum efx_phy_mode mode) | |
683 | { | |
8c8661e4 | 684 | return !!(mode & ~PHY_MODE_TX_DISABLED); |
f8b87c17 BH |
685 | } |
686 | ||
cd0ecc9a BH |
687 | /** |
688 | * struct efx_hw_stat_desc - Description of a hardware statistic | |
689 | * @name: Name of the statistic as visible through ethtool, or %NULL if | |
690 | * it should not be exposed | |
691 | * @dma_width: Width in bits (0 for non-DMA statistics) | |
692 | * @offset: Offset within stats (ignored for non-DMA statistics) | |
8ceee660 | 693 | */ |
cd0ecc9a BH |
694 | struct efx_hw_stat_desc { |
695 | const char *name; | |
696 | u16 dma_width; | |
697 | u16 offset; | |
8ceee660 BH |
698 | }; |
699 | ||
700 | /* Number of bits used in a multicast filter hash address */ | |
701 | #define EFX_MCAST_HASH_BITS 8 | |
702 | ||
703 | /* Number of (single-bit) entries in a multicast filter hash */ | |
704 | #define EFX_MCAST_HASH_ENTRIES (1 << EFX_MCAST_HASH_BITS) | |
705 | ||
706 | /* An Efx multicast filter hash */ | |
707 | union efx_multicast_hash { | |
708 | u8 byte[EFX_MCAST_HASH_ENTRIES / 8]; | |
709 | efx_oword_t oword[EFX_MCAST_HASH_ENTRIES / sizeof(efx_oword_t) / 8]; | |
710 | }; | |
711 | ||
cd2d5b52 | 712 | struct vfdi_status; |
64eebcfd | 713 | |
42356d9a EC |
714 | /* The reserved RSS context value */ |
715 | #define EFX_EF10_RSS_CONTEXT_INVALID 0xffffffff | |
716 | /** | |
717 | * struct efx_rss_context - A user-defined RSS context for filtering | |
718 | * @list: node of linked list on which this struct is stored | |
719 | * @context_id: the RSS_CONTEXT_ID returned by MC firmware, or | |
720 | * %EFX_EF10_RSS_CONTEXT_INVALID if this context is not present on the NIC. | |
721 | * For Siena, 0 if RSS is active, else %EFX_EF10_RSS_CONTEXT_INVALID. | |
722 | * @user_id: the rss_context ID exposed to userspace over ethtool. | |
723 | * @rx_hash_udp_4tuple: UDP 4-tuple hashing enabled | |
724 | * @rx_hash_key: Toeplitz hash key for this RSS context | |
725 | * @indir_table: Indirection table for this RSS context | |
726 | */ | |
727 | struct efx_rss_context { | |
728 | struct list_head list; | |
729 | u32 context_id; | |
730 | u32 user_id; | |
731 | bool rx_hash_udp_4tuple; | |
732 | u8 rx_hash_key[40]; | |
733 | u32 rx_indir_table[128]; | |
734 | }; | |
735 | ||
f993740e | 736 | #ifdef CONFIG_RFS_ACCEL |
f8d62037 EC |
737 | /* Order of these is important, since filter_id >= %EFX_ARFS_FILTER_ID_PENDING |
738 | * is used to test if filter does or will exist. | |
739 | */ | |
740 | #define EFX_ARFS_FILTER_ID_PENDING -1 | |
741 | #define EFX_ARFS_FILTER_ID_ERROR -2 | |
742 | #define EFX_ARFS_FILTER_ID_REMOVING -3 | |
743 | /** | |
744 | * struct efx_arfs_rule - record of an ARFS filter and its IDs | |
745 | * @node: linkage into hash table | |
746 | * @spec: details of the filter (used as key for hash table). Use efx->type to | |
747 | * determine which member to use. | |
748 | * @rxq_index: channel to which the filter will steer traffic. | |
749 | * @arfs_id: filter ID which was returned to ARFS | |
750 | * @filter_id: index in software filter table. May be | |
751 | * %EFX_ARFS_FILTER_ID_PENDING if filter was not inserted yet, | |
752 | * %EFX_ARFS_FILTER_ID_ERROR if filter insertion failed, or | |
753 | * %EFX_ARFS_FILTER_ID_REMOVING if expiry is currently removing the filter. | |
754 | */ | |
755 | struct efx_arfs_rule { | |
756 | struct hlist_node node; | |
757 | struct efx_filter_spec spec; | |
758 | u16 rxq_index; | |
759 | u16 arfs_id; | |
760 | s32 filter_id; | |
761 | }; | |
762 | ||
763 | /* Size chosen so that the table is one page (4kB) */ | |
764 | #define EFX_ARFS_HASH_TABLE_SIZE 512 | |
765 | ||
f993740e EC |
766 | /** |
767 | * struct efx_async_filter_insertion - Request to asynchronously insert a filter | |
768 | * @net_dev: Reference to the netdevice | |
769 | * @spec: The filter to insert | |
770 | * @work: Workitem for this request | |
771 | * @rxq_index: Identifies the channel for which this request was made | |
772 | * @flow_id: Identifies the kernel-side flow for which this request was made | |
773 | */ | |
774 | struct efx_async_filter_insertion { | |
775 | struct net_device *net_dev; | |
776 | struct efx_filter_spec spec; | |
777 | struct work_struct work; | |
778 | u16 rxq_index; | |
779 | u32 flow_id; | |
780 | }; | |
781 | ||
782 | /* Maximum number of ARFS workitems that may be in flight on an efx_nic */ | |
783 | #define EFX_RPS_MAX_IN_FLIGHT 8 | |
784 | #endif /* CONFIG_RFS_ACCEL */ | |
785 | ||
8ceee660 BH |
786 | /** |
787 | * struct efx_nic - an Efx NIC | |
788 | * @name: Device name (net device name or bus id before net device registered) | |
789 | * @pci_dev: The PCI device | |
0bcf4a64 BH |
790 | * @node: List node for maintaning primary/secondary function lists |
791 | * @primary: &struct efx_nic instance for the primary function of this | |
792 | * controller. May be the same structure, and may be %NULL if no | |
793 | * primary function is bound. Serialised by rtnl_lock. | |
794 | * @secondary_list: List of &struct efx_nic instances for the secondary PCI | |
795 | * functions of the controller, if this is for the primary function. | |
796 | * Serialised by rtnl_lock. | |
8ceee660 BH |
797 | * @type: Controller type attributes |
798 | * @legacy_irq: IRQ number | |
8d9853d9 BH |
799 | * @workqueue: Workqueue for port reconfigures and the HW monitor. |
800 | * Work items do not hold and must not acquire RTNL. | |
6977dc63 | 801 | * @workqueue_name: Name of workqueue |
8ceee660 | 802 | * @reset_work: Scheduled reset workitem |
8ceee660 BH |
803 | * @membase_phys: Memory BAR value as physical address |
804 | * @membase: Memory BAR value | |
71827443 | 805 | * @vi_stride: step between per-VI registers / memory regions |
8ceee660 | 806 | * @interrupt_mode: Interrupt mode |
cc180b69 | 807 | * @timer_quantum_ns: Interrupt timer quantum, in nanoseconds |
d95e329a | 808 | * @timer_max_ns: Interrupt timer maximum value, in nanoseconds |
6fb70fd1 | 809 | * @irq_rx_adaptive: Adaptive IRQ moderation enabled for RX event queues |
539de7c5 BK |
810 | * @irq_rx_mod_step_us: Step size for IRQ moderation for RX event queues |
811 | * @irq_rx_moderation_us: IRQ moderation time for RX event queues | |
62776d03 | 812 | * @msg_enable: Log message enable flags |
f16aeea0 | 813 | * @state: Device state number (%STATE_*). Serialised by the rtnl_lock. |
a7d529ae | 814 | * @reset_pending: Bitmask for pending resets |
8ceee660 BH |
815 | * @tx_queue: TX DMA queues |
816 | * @rx_queue: RX DMA queues | |
817 | * @channel: Channels | |
d8291187 | 818 | * @msi_context: Context for each MSI |
7f967c01 BH |
819 | * @extra_channel_types: Types of extra (non-traffic) channels that |
820 | * should be allocated for this NIC | |
ecc910f5 SH |
821 | * @rxq_entries: Size of receive queues requested by user. |
822 | * @txq_entries: Size of transmit queues requested by user. | |
14bf718f BH |
823 | * @txq_stop_thresh: TX queue fill level at or above which we stop it. |
824 | * @txq_wake_thresh: TX queue fill level at or below which we wake it. | |
28e47c49 BH |
825 | * @tx_dc_base: Base qword address in SRAM of TX queue descriptor caches |
826 | * @rx_dc_base: Base qword address in SRAM of RX queue descriptor caches | |
827 | * @sram_lim_qw: Qword address limit of SRAM | |
0484e0db | 828 | * @next_buffer_table: First available buffer table id |
28b581ab | 829 | * @n_channels: Number of channels in use |
a4900ac9 BH |
830 | * @n_rx_channels: Number of channels used for RX (= number of RX queues) |
831 | * @n_tx_channels: Number of channels used for TX | |
2935e3c3 | 832 | * @n_extra_tx_channels: Number of extra channels with TX queues |
2ec03014 AR |
833 | * @rx_ip_align: RX DMA address offset to have IP header aligned in |
834 | * in accordance with NET_IP_ALIGN | |
272baeeb | 835 | * @rx_dma_len: Current maximum RX DMA length |
8ceee660 | 836 | * @rx_buffer_order: Order (log2) of number of pages for each RX buffer |
85740cdf BH |
837 | * @rx_buffer_truesize: Amortised allocation size of an RX buffer, |
838 | * for use in sk_buff::truesize | |
43a3739d JC |
839 | * @rx_prefix_size: Size of RX prefix before packet data |
840 | * @rx_packet_hash_offset: Offset of RX flow hash from start of packet data | |
841 | * (valid only if @rx_prefix_size != 0; always negative) | |
3dced740 BH |
842 | * @rx_packet_len_offset: Offset of RX packet length from start of packet data |
843 | * (valid only for NICs that set %EFX_RX_PKT_PREFIX_LEN; always negative) | |
bd9a265d JC |
844 | * @rx_packet_ts_offset: Offset of timestamp from start of packet data |
845 | * (valid only if channel->sync_timestamps_enabled; always negative) | |
85740cdf | 846 | * @rx_scatter: Scatter mode enabled for receives |
42356d9a EC |
847 | * @rss_context: Main RSS context. Its @list member is the head of the list of |
848 | * RSS contexts created by user requests | |
e0a65e3c | 849 | * @rss_lock: Protects custom RSS context software state in @rss_context.list |
0484e0db BH |
850 | * @int_error_count: Number of internal errors seen recently |
851 | * @int_error_expire: Time at which error count will be expired | |
d8291187 BH |
852 | * @irq_soft_enabled: Are IRQs soft-enabled? If not, IRQ handler will |
853 | * acknowledge but do nothing else. | |
8ceee660 | 854 | * @irq_status: Interrupt status buffer |
c28884c5 | 855 | * @irq_zero_count: Number of legacy IRQs seen with queue flags == 0 |
1646a6f3 | 856 | * @irq_level: IRQ level/index for IRQs not triggered by an event queue |
dd40781e | 857 | * @selftest_work: Work item for asynchronous self-test |
76884835 | 858 | * @mtd_list: List of MTDs attached to the NIC |
25985edc | 859 | * @nic_data: Hardware dependent state |
f3ad5003 | 860 | * @mcdi: Management-Controller-to-Driver Interface state |
8c8661e4 | 861 | * @mac_lock: MAC access lock. Protects @port_enabled, @phy_mode, |
e4abce85 | 862 | * efx_monitor() and efx_reconfigure_port() |
8ceee660 | 863 | * @port_enabled: Port enabled indicator. |
fdaa9aed SH |
864 | * Serialises efx_stop_all(), efx_start_all(), efx_monitor() and |
865 | * efx_mac_work() with kernel interfaces. Safe to read under any | |
866 | * one of the rtnl_lock, mac_lock, or netif_tx_lock, but all three must | |
867 | * be held to modify it. | |
8ceee660 BH |
868 | * @port_initialized: Port initialized? |
869 | * @net_dev: Operating system network device. Consider holding the rtnl lock | |
ebfcd0fd | 870 | * @fixed_features: Features which cannot be turned off |
c1be4821 EC |
871 | * @num_mac_stats: Number of MAC stats reported by firmware (MAC_STATS_NUM_STATS |
872 | * field of %MC_CMD_GET_CAPABILITIES_V4 response, or %MC_CMD_MAC_NSTATS) | |
8ceee660 | 873 | * @stats_buffer: DMA buffer for statistics |
8ceee660 | 874 | * @phy_type: PHY type |
8ceee660 BH |
875 | * @phy_op: PHY interface |
876 | * @phy_data: PHY private data (including PHY-specific stats) | |
68e7f45e | 877 | * @mdio: PHY MDIO interface |
8880f4ec | 878 | * @mdio_bus: PHY MDIO bus ID (only used by Siena) |
8c8661e4 | 879 | * @phy_mode: PHY operating mode. Serialised by @mac_lock. |
d3245b28 | 880 | * @link_advertising: Autonegotiation advertising flags |
7f61e6c6 EC |
881 | * @fec_config: Forward Error Correction configuration flags. For bit positions |
882 | * see &enum ethtool_fec_config_bits. | |
eb50c0d6 | 883 | * @link_state: Current state of the link |
8ceee660 | 884 | * @n_link_state_changes: Number of times the link has changed state |
964e6135 BH |
885 | * @unicast_filter: Flag for Falcon-arch simple unicast filter. |
886 | * Protected by @mac_lock. | |
887 | * @multicast_hash: Multicast hash table for Falcon-arch. | |
888 | * Protected by @mac_lock. | |
04cc8cac | 889 | * @wanted_fc: Wanted flow control flags |
a606f432 SH |
890 | * @fc_disable: When non-zero flow control is disabled. Typically used to |
891 | * ensure that network back pressure doesn't delay dma queue flushes. | |
892 | * Serialised by the rtnl lock. | |
8be4f3e6 | 893 | * @mac_work: Work item for changing MAC promiscuity and multicast hash |
3273c2e8 BH |
894 | * @loopback_mode: Loopback status |
895 | * @loopback_modes: Supported loopback mode bitmask | |
896 | * @loopback_selftest: Offline self-test private state | |
c2bebe37 | 897 | * @filter_sem: Filter table rw_semaphore, protects existence of @filter_state |
6d661cec | 898 | * @filter_state: Architecture-dependent filter table state |
3af0f342 | 899 | * @rps_mutex: Protects RPS state of all channels |
faf8dcc1 JC |
900 | * @rps_expire_channel: Next channel to check for expiry |
901 | * @rps_expire_index: Next index to check for expiry in | |
902 | * @rps_expire_channel's @rps_flow_id | |
f993740e EC |
903 | * @rps_slot_map: bitmap of in-flight entries in @rps_slot |
904 | * @rps_slot: array of ARFS insertion requests for efx_filter_rfs_work() | |
f8d62037 EC |
905 | * @rps_hash_lock: Protects ARFS filter mapping state (@rps_hash_table and |
906 | * @rps_next_id). | |
907 | * @rps_hash_table: Mapping between ARFS filters and their various IDs | |
908 | * @rps_next_id: next arfs_id for an ARFS filter | |
3881d8ab | 909 | * @active_queues: Count of RX and TX queues that haven't been flushed and drained. |
9f2cb71c BH |
910 | * @rxq_flush_pending: Count of number of receive queues that need to be flushed. |
911 | * Decremented when the efx_flush_rx_queue() is called. | |
912 | * @rxq_flush_outstanding: Count of number of RX flushes started but not yet | |
913 | * completed (either success or failure). Not used when MCDI is used to | |
914 | * flush receive queues. | |
915 | * @flush_wq: wait queue used by efx_nic_flush_queues() to wait for flush completions. | |
cd2d5b52 BH |
916 | * @vf_count: Number of VFs intended to be enabled. |
917 | * @vf_init_count: Number of VFs that have been fully initialised. | |
918 | * @vi_scale: log2 number of vnics per VF. | |
7c236c43 | 919 | * @ptp_data: PTP state data |
acaef3c1 | 920 | * @ptp_warned: has this NIC seen and warned about unexpected PTP events? |
ef215e64 | 921 | * @vpd_sn: Serial number read from VPD |
ab28c12a BH |
922 | * @monitor_work: Hardware monitor workitem |
923 | * @biu_lock: BIU (bus interface unit) lock | |
1646a6f3 BH |
924 | * @last_irq_cpu: Last CPU to handle a possible test interrupt. This |
925 | * field is used by efx_test_interrupts() to verify that an | |
926 | * interrupt has occurred. | |
cd0ecc9a BH |
927 | * @stats_lock: Statistics update lock. Must be held when calling |
928 | * efx_nic_type::{update,start,stop}_stats. | |
e4d112e4 | 929 | * @n_rx_noskb_drops: Count of RX packets dropped due to failure to allocate an skb |
8ceee660 | 930 | * |
754c653a | 931 | * This is stored in the private area of the &struct net_device. |
8ceee660 BH |
932 | */ |
933 | struct efx_nic { | |
ab28c12a BH |
934 | /* The following fields should be written very rarely */ |
935 | ||
8ceee660 | 936 | char name[IFNAMSIZ]; |
0bcf4a64 BH |
937 | struct list_head node; |
938 | struct efx_nic *primary; | |
939 | struct list_head secondary_list; | |
8ceee660 | 940 | struct pci_dev *pci_dev; |
6602041b | 941 | unsigned int port_num; |
8ceee660 BH |
942 | const struct efx_nic_type *type; |
943 | int legacy_irq; | |
b28405b0 | 944 | bool eeh_disabled_legacy_irq; |
8ceee660 | 945 | struct workqueue_struct *workqueue; |
6977dc63 | 946 | char workqueue_name[16]; |
8ceee660 | 947 | struct work_struct reset_work; |
086ea356 | 948 | resource_size_t membase_phys; |
8ceee660 | 949 | void __iomem *membase; |
ab28c12a | 950 | |
71827443 EC |
951 | unsigned int vi_stride; |
952 | ||
8ceee660 | 953 | enum efx_int_mode interrupt_mode; |
cc180b69 | 954 | unsigned int timer_quantum_ns; |
d95e329a | 955 | unsigned int timer_max_ns; |
6fb70fd1 | 956 | bool irq_rx_adaptive; |
539de7c5 BK |
957 | unsigned int irq_mod_step_us; |
958 | unsigned int irq_rx_moderation_us; | |
62776d03 | 959 | u32 msg_enable; |
8ceee660 | 960 | |
8ceee660 | 961 | enum nic_state state; |
a7d529ae | 962 | unsigned long reset_pending; |
8ceee660 | 963 | |
8313aca3 | 964 | struct efx_channel *channel[EFX_MAX_CHANNELS]; |
d8291187 | 965 | struct efx_msi_context msi_context[EFX_MAX_CHANNELS]; |
7f967c01 BH |
966 | const struct efx_channel_type * |
967 | extra_channel_type[EFX_MAX_EXTRA_CHANNELS]; | |
8ceee660 | 968 | |
ecc910f5 SH |
969 | unsigned rxq_entries; |
970 | unsigned txq_entries; | |
14bf718f BH |
971 | unsigned int txq_stop_thresh; |
972 | unsigned int txq_wake_thresh; | |
973 | ||
28e47c49 BH |
974 | unsigned tx_dc_base; |
975 | unsigned rx_dc_base; | |
976 | unsigned sram_lim_qw; | |
0484e0db | 977 | unsigned next_buffer_table; |
b105798f BH |
978 | |
979 | unsigned int max_channels; | |
b0fbdae1 | 980 | unsigned int max_tx_channels; |
a4900ac9 BH |
981 | unsigned n_channels; |
982 | unsigned n_rx_channels; | |
cd2d5b52 | 983 | unsigned rss_spread; |
97653431 | 984 | unsigned tx_channel_offset; |
a4900ac9 | 985 | unsigned n_tx_channels; |
2935e3c3 | 986 | unsigned n_extra_tx_channels; |
2ec03014 | 987 | unsigned int rx_ip_align; |
272baeeb | 988 | unsigned int rx_dma_len; |
8ceee660 | 989 | unsigned int rx_buffer_order; |
85740cdf | 990 | unsigned int rx_buffer_truesize; |
1648a23f | 991 | unsigned int rx_page_buf_step; |
2768935a | 992 | unsigned int rx_bufs_per_page; |
1648a23f | 993 | unsigned int rx_pages_per_batch; |
43a3739d JC |
994 | unsigned int rx_prefix_size; |
995 | int rx_packet_hash_offset; | |
3dced740 | 996 | int rx_packet_len_offset; |
bd9a265d | 997 | int rx_packet_ts_offset; |
85740cdf | 998 | bool rx_scatter; |
42356d9a | 999 | struct efx_rss_context rss_context; |
e0a65e3c | 1000 | struct mutex rss_lock; |
8ceee660 | 1001 | |
0484e0db BH |
1002 | unsigned int_error_count; |
1003 | unsigned long int_error_expire; | |
1004 | ||
d8291187 | 1005 | bool irq_soft_enabled; |
8ceee660 | 1006 | struct efx_buffer irq_status; |
c28884c5 | 1007 | unsigned irq_zero_count; |
1646a6f3 | 1008 | unsigned irq_level; |
dd40781e | 1009 | struct delayed_work selftest_work; |
8ceee660 | 1010 | |
76884835 BH |
1011 | #ifdef CONFIG_SFC_MTD |
1012 | struct list_head mtd_list; | |
1013 | #endif | |
4a5b504d | 1014 | |
8880f4ec | 1015 | void *nic_data; |
f3ad5003 | 1016 | struct efx_mcdi_data *mcdi; |
8ceee660 BH |
1017 | |
1018 | struct mutex mac_lock; | |
766ca0fa | 1019 | struct work_struct mac_work; |
dc8cfa55 | 1020 | bool port_enabled; |
8ceee660 | 1021 | |
74cd60a4 | 1022 | bool mc_bist_for_other_fn; |
dc8cfa55 | 1023 | bool port_initialized; |
8ceee660 | 1024 | struct net_device *net_dev; |
8ceee660 | 1025 | |
ebfcd0fd AR |
1026 | netdev_features_t fixed_features; |
1027 | ||
c1be4821 | 1028 | u16 num_mac_stats; |
8ceee660 | 1029 | struct efx_buffer stats_buffer; |
f8f3b5ae JC |
1030 | u64 rx_nodesc_drops_total; |
1031 | u64 rx_nodesc_drops_while_down; | |
1032 | bool rx_nodesc_drops_prev_state; | |
8ceee660 | 1033 | |
c1c4f453 | 1034 | unsigned int phy_type; |
6c8c2513 | 1035 | const struct efx_phy_operations *phy_op; |
8ceee660 | 1036 | void *phy_data; |
68e7f45e | 1037 | struct mdio_if_info mdio; |
8880f4ec | 1038 | unsigned int mdio_bus; |
f8b87c17 | 1039 | enum efx_phy_mode phy_mode; |
8ceee660 | 1040 | |
c2ab85d2 | 1041 | __ETHTOOL_DECLARE_LINK_MODE_MASK(link_advertising); |
7f61e6c6 | 1042 | u32 fec_config; |
eb50c0d6 | 1043 | struct efx_link_state link_state; |
8ceee660 BH |
1044 | unsigned int n_link_state_changes; |
1045 | ||
964e6135 | 1046 | bool unicast_filter; |
8ceee660 | 1047 | union efx_multicast_hash multicast_hash; |
b5626946 | 1048 | u8 wanted_fc; |
a606f432 | 1049 | unsigned fc_disable; |
8ceee660 BH |
1050 | |
1051 | atomic_t rx_reset; | |
3273c2e8 | 1052 | enum efx_loopback_mode loopback_mode; |
e58f69f4 | 1053 | u64 loopback_modes; |
3273c2e8 BH |
1054 | |
1055 | void *loopback_selftest; | |
64eebcfd | 1056 | |
0d322413 | 1057 | struct rw_semaphore filter_sem; |
6d661cec BH |
1058 | void *filter_state; |
1059 | #ifdef CONFIG_RFS_ACCEL | |
3af0f342 | 1060 | struct mutex rps_mutex; |
faf8dcc1 | 1061 | unsigned int rps_expire_channel; |
6d661cec | 1062 | unsigned int rps_expire_index; |
f993740e EC |
1063 | unsigned long rps_slot_map; |
1064 | struct efx_async_filter_insertion rps_slot[EFX_RPS_MAX_IN_FLIGHT]; | |
f8d62037 EC |
1065 | spinlock_t rps_hash_lock; |
1066 | struct hlist_head *rps_hash_table; | |
1067 | u32 rps_next_id; | |
6d661cec | 1068 | #endif |
ab28c12a | 1069 | |
3881d8ab | 1070 | atomic_t active_queues; |
9f2cb71c BH |
1071 | atomic_t rxq_flush_pending; |
1072 | atomic_t rxq_flush_outstanding; | |
1073 | wait_queue_head_t flush_wq; | |
1074 | ||
cd2d5b52 | 1075 | #ifdef CONFIG_SFC_SRIOV |
cd2d5b52 BH |
1076 | unsigned vf_count; |
1077 | unsigned vf_init_count; | |
1078 | unsigned vi_scale; | |
cd2d5b52 BH |
1079 | #endif |
1080 | ||
7c236c43 | 1081 | struct efx_ptp_data *ptp_data; |
acaef3c1 | 1082 | bool ptp_warned; |
7c236c43 | 1083 | |
ef215e64 BH |
1084 | char *vpd_sn; |
1085 | ||
ab28c12a BH |
1086 | /* The following fields may be written more often */ |
1087 | ||
1088 | struct delayed_work monitor_work ____cacheline_aligned_in_smp; | |
1089 | spinlock_t biu_lock; | |
1646a6f3 | 1090 | int last_irq_cpu; |
ab28c12a | 1091 | spinlock_t stats_lock; |
e4d112e4 | 1092 | atomic_t n_rx_noskb_drops; |
8ceee660 BH |
1093 | }; |
1094 | ||
55668611 BH |
1095 | static inline int efx_dev_registered(struct efx_nic *efx) |
1096 | { | |
1097 | return efx->net_dev->reg_state == NETREG_REGISTERED; | |
1098 | } | |
1099 | ||
8880f4ec BH |
1100 | static inline unsigned int efx_port_num(struct efx_nic *efx) |
1101 | { | |
6602041b | 1102 | return efx->port_num; |
8880f4ec BH |
1103 | } |
1104 | ||
45a3fd55 BH |
1105 | struct efx_mtd_partition { |
1106 | struct list_head node; | |
1107 | struct mtd_info mtd; | |
1108 | const char *dev_type_name; | |
1109 | const char *type_name; | |
1110 | char name[IFNAMSIZ + 20]; | |
1111 | }; | |
1112 | ||
e5fbd977 JC |
1113 | struct efx_udp_tunnel { |
1114 | u16 type; /* TUNNEL_ENCAP_UDP_PORT_ENTRY_foo, see mcdi_pcol.h */ | |
1115 | __be16 port; | |
1116 | /* Count of repeated adds of the same port. Used only inside the list, | |
1117 | * not in request arguments. | |
1118 | */ | |
1119 | u16 count; | |
1120 | }; | |
1121 | ||
8ceee660 BH |
1122 | /** |
1123 | * struct efx_nic_type - Efx device type definition | |
02246a7f | 1124 | * @mem_bar: Get the memory BAR |
b105798f | 1125 | * @mem_map_size: Get memory BAR mapped size |
ef2b90ee BH |
1126 | * @probe: Probe the controller |
1127 | * @remove: Free resources allocated by probe() | |
1128 | * @init: Initialise the controller | |
28e47c49 BH |
1129 | * @dimension_resources: Dimension controller resources (buffer table, |
1130 | * and VIs once the available interrupt resources are clear) | |
ef2b90ee BH |
1131 | * @fini: Shut down the controller |
1132 | * @monitor: Periodic function for polling link state and hardware monitor | |
0e2a9c7c BH |
1133 | * @map_reset_reason: Map ethtool reset reason to a reset method |
1134 | * @map_reset_flags: Map ethtool reset flags to a reset method, if possible | |
ef2b90ee BH |
1135 | * @reset: Reset the controller hardware and possibly the PHY. This will |
1136 | * be called while the controller is uninitialised. | |
1137 | * @probe_port: Probe the MAC and PHY | |
1138 | * @remove_port: Free resources allocated by probe_port() | |
40641ed9 | 1139 | * @handle_global_event: Handle a "global" event (may be %NULL) |
e42c3d85 | 1140 | * @fini_dmaq: Flush and finalise DMA queues (RX and TX queues) |
ef2b90ee | 1141 | * @prepare_flush: Prepare the hardware for flushing the DMA queues |
e42c3d85 BH |
1142 | * (for Falcon architecture) |
1143 | * @finish_flush: Clean up after flushing the DMA queues (for Falcon | |
1144 | * architecture) | |
e283546c EC |
1145 | * @prepare_flr: Prepare for an FLR |
1146 | * @finish_flr: Clean up after an FLR | |
cd0ecc9a BH |
1147 | * @describe_stats: Describe statistics for ethtool |
1148 | * @update_stats: Update statistics not provided by event handling. | |
1149 | * Either argument may be %NULL. | |
ef2b90ee | 1150 | * @start_stats: Start the regular fetching of statistics |
f8f3b5ae | 1151 | * @pull_stats: Pull stats from the NIC and wait until they arrive. |
ef2b90ee | 1152 | * @stop_stats: Stop the regular fetching of statistics |
06629f07 | 1153 | * @set_id_led: Set state of identifying LED or revert to automatic function |
ef2b90ee | 1154 | * @push_irq_moderation: Apply interrupt moderation value |
d3245b28 | 1155 | * @reconfigure_port: Push loopback/power/txdis changes to the MAC and PHY |
9dd3a13b | 1156 | * @prepare_enable_fc_tx: Prepare MAC to enable pause frame TX (may be %NULL) |
30b81cda BH |
1157 | * @reconfigure_mac: Push MAC address, MTU, flow control and filter settings |
1158 | * to the hardware. Serialised by the mac_lock. | |
710b208d | 1159 | * @check_mac_fault: Check MAC fault state. True if fault present. |
89c758fa BH |
1160 | * @get_wol: Get WoL configuration from driver state |
1161 | * @set_wol: Push WoL configuration to the NIC | |
1162 | * @resume_wol: Synchronise WoL state between driver and MC (e.g. after resume) | |
86094f7f | 1163 | * @test_chip: Test registers. May use efx_farch_test_registers(), and is |
d4f2cecc | 1164 | * expected to reset the NIC. |
0aa3fbaa | 1165 | * @test_nvram: Test validity of NVRAM contents |
f3ad5003 BH |
1166 | * @mcdi_request: Send an MCDI request with the given header and SDU. |
1167 | * The SDU length may be any value from 0 up to the protocol- | |
1168 | * defined maximum, but its buffer will be padded to a multiple | |
1169 | * of 4 bytes. | |
1170 | * @mcdi_poll_response: Test whether an MCDI response is available. | |
1171 | * @mcdi_read_response: Read the MCDI response PDU. The offset will | |
1172 | * be a multiple of 4. The length may not be, but the buffer | |
1173 | * will be padded so it is safe to round up. | |
1174 | * @mcdi_poll_reboot: Test whether the MCDI has rebooted. If so, | |
1175 | * return an appropriate error code for aborting any current | |
1176 | * request; otherwise return 0. | |
86094f7f BH |
1177 | * @irq_enable_master: Enable IRQs on the NIC. Each event queue must |
1178 | * be separately enabled after this. | |
1179 | * @irq_test_generate: Generate a test IRQ | |
1180 | * @irq_disable_non_ev: Disable non-event IRQs on the NIC. Each event | |
1181 | * queue must be separately disabled before this. | |
1182 | * @irq_handle_msi: Handle MSI for a channel. The @dev_id argument is | |
1183 | * a pointer to the &struct efx_msi_context for the channel. | |
1184 | * @irq_handle_legacy: Handle legacy interrupt. The @dev_id argument | |
1185 | * is a pointer to the &struct efx_nic. | |
1186 | * @tx_probe: Allocate resources for TX queue | |
1187 | * @tx_init: Initialise TX queue on the NIC | |
1188 | * @tx_remove: Free resources for TX queue | |
1189 | * @tx_write: Write TX descriptors and doorbell | |
d43050c0 | 1190 | * @rx_push_rss_config: Write RSS hash key and indirection table to the NIC |
a707d188 | 1191 | * @rx_pull_rss_config: Read RSS hash key and indirection table back from the NIC |
42356d9a EC |
1192 | * @rx_push_rss_context_config: Write RSS hash key and indirection table for |
1193 | * user RSS context to the NIC | |
1194 | * @rx_pull_rss_context_config: Read RSS hash key and indirection table for user | |
1195 | * RSS context back from the NIC | |
86094f7f BH |
1196 | * @rx_probe: Allocate resources for RX queue |
1197 | * @rx_init: Initialise RX queue on the NIC | |
1198 | * @rx_remove: Free resources for RX queue | |
1199 | * @rx_write: Write RX descriptors and doorbell | |
1200 | * @rx_defer_refill: Generate a refill reminder event | |
1201 | * @ev_probe: Allocate resources for event queue | |
1202 | * @ev_init: Initialise event queue on the NIC | |
1203 | * @ev_fini: Deinitialise event queue on the NIC | |
1204 | * @ev_remove: Free resources for event queue | |
1205 | * @ev_process: Process events for a queue, up to the given NAPI quota | |
1206 | * @ev_read_ack: Acknowledge read events on a queue, rearming its IRQ | |
1207 | * @ev_test_generate: Generate a test event | |
add72477 BH |
1208 | * @filter_table_probe: Probe filter capabilities and set up filter software state |
1209 | * @filter_table_restore: Restore filters removed from hardware | |
1210 | * @filter_table_remove: Remove filters from hardware and tear down software state | |
1211 | * @filter_update_rx_scatter: Update filters after change to rx scatter setting | |
1212 | * @filter_insert: add or replace a filter | |
1213 | * @filter_remove_safe: remove a filter by ID, carefully | |
1214 | * @filter_get_safe: retrieve a filter by ID, carefully | |
fbd79120 BH |
1215 | * @filter_clear_rx: Remove all RX filters whose priority is less than or |
1216 | * equal to the given priority and is not %EFX_FILTER_PRI_AUTO | |
add72477 BH |
1217 | * @filter_count_rx_used: Get the number of filters in use at a given priority |
1218 | * @filter_get_rx_id_limit: Get maximum value of a filter id, plus 1 | |
1219 | * @filter_get_rx_ids: Get list of RX filters at a given priority | |
add72477 BH |
1220 | * @filter_rfs_expire_one: Consider expiring a filter inserted for RFS. |
1221 | * This must check whether the specified table entry is used by RFS | |
1222 | * and that rps_may_expire_flow() returns true for it. | |
45a3fd55 BH |
1223 | * @mtd_probe: Probe and add MTD partitions associated with this net device, |
1224 | * using efx_mtd_add() | |
1225 | * @mtd_rename: Set an MTD partition name using the net device name | |
1226 | * @mtd_read: Read from an MTD partition | |
1227 | * @mtd_erase: Erase part of an MTD partition | |
1228 | * @mtd_write: Write to an MTD partition | |
1229 | * @mtd_sync: Wait for write-back to complete on MTD partition. This | |
1230 | * also notifies the driver that a writer has finished using this | |
1231 | * partition. | |
9ec06595 | 1232 | * @ptp_write_host_time: Send host time to MC as part of sync protocol |
bd9a265d JC |
1233 | * @ptp_set_ts_sync_events: Enable or disable sync events for inline RX |
1234 | * timestamping, possibly only temporarily for the purposes of a reset. | |
9ec06595 DP |
1235 | * @ptp_set_ts_config: Set hardware timestamp configuration. The flags |
1236 | * and tx_type will already have been validated but this operation | |
1237 | * must validate and update rx_filter. | |
08a7b29b | 1238 | * @get_phys_port_id: Get the underlying physical port id. |
910c8789 | 1239 | * @set_mac_address: Set the MAC address of the device |
46d1efd8 EC |
1240 | * @tso_versions: Returns mask of firmware-assisted TSO versions supported. |
1241 | * If %NULL, then device does not support any TSO version. | |
e5fbd977 JC |
1242 | * @udp_tnl_push_ports: Push the list of UDP tunnel ports to the NIC if required. |
1243 | * @udp_tnl_add_port: Add a UDP tunnel port | |
1244 | * @udp_tnl_has_port: Check if a port has been added as UDP tunnel | |
1245 | * @udp_tnl_del_port: Remove a UDP tunnel port | |
daeda630 | 1246 | * @revision: Hardware architecture revision |
8ceee660 BH |
1247 | * @txd_ptr_tbl_base: TX descriptor ring base address |
1248 | * @rxd_ptr_tbl_base: RX descriptor ring base address | |
1249 | * @buf_tbl_base: Buffer table base address | |
1250 | * @evq_ptr_tbl_base: Event queue pointer table base address | |
1251 | * @evq_rptr_tbl_base: Event queue read-pointer table base address | |
8ceee660 | 1252 | * @max_dma_mask: Maximum possible DMA mask |
43a3739d JC |
1253 | * @rx_prefix_size: Size of RX prefix before packet data |
1254 | * @rx_hash_offset: Offset of RX flow hash within prefix | |
bd9a265d | 1255 | * @rx_ts_offset: Offset of timestamp within prefix |
85740cdf | 1256 | * @rx_buffer_padding: Size of padding at end of RX packet |
e8c68c0a JC |
1257 | * @can_rx_scatter: NIC is able to scatter packets to multiple buffers |
1258 | * @always_rx_scatter: NIC will always scatter packets to multiple buffers | |
de1deff9 | 1259 | * @option_descriptors: NIC supports TX option descriptors |
6f9f6ec2 AR |
1260 | * @min_interrupt_mode: Lowest capability interrupt mode supported |
1261 | * from &enum efx_int_mode. | |
8ceee660 | 1262 | * @max_interrupt_mode: Highest capability interrupt mode supported |
6f9f6ec2 | 1263 | * from &enum efx_int_mode. |
cc180b69 | 1264 | * @timer_period_max: Maximum period of interrupt timer (in ticks) |
c383b537 BH |
1265 | * @offload_features: net_device feature flags for protocol offload |
1266 | * features implemented in hardware | |
df2cd8af | 1267 | * @mcdi_max_ver: Maximum MCDI version supported |
9ec06595 | 1268 | * @hwtstamp_filters: Mask of hardware timestamp filter types supported |
8ceee660 BH |
1269 | */ |
1270 | struct efx_nic_type { | |
6f7f8aa6 | 1271 | bool is_vf; |
03714bbb | 1272 | unsigned int (*mem_bar)(struct efx_nic *efx); |
b105798f | 1273 | unsigned int (*mem_map_size)(struct efx_nic *efx); |
ef2b90ee BH |
1274 | int (*probe)(struct efx_nic *efx); |
1275 | void (*remove)(struct efx_nic *efx); | |
1276 | int (*init)(struct efx_nic *efx); | |
c15eed22 | 1277 | int (*dimension_resources)(struct efx_nic *efx); |
ef2b90ee BH |
1278 | void (*fini)(struct efx_nic *efx); |
1279 | void (*monitor)(struct efx_nic *efx); | |
0e2a9c7c BH |
1280 | enum reset_type (*map_reset_reason)(enum reset_type reason); |
1281 | int (*map_reset_flags)(u32 *flags); | |
ef2b90ee BH |
1282 | int (*reset)(struct efx_nic *efx, enum reset_type method); |
1283 | int (*probe_port)(struct efx_nic *efx); | |
1284 | void (*remove_port)(struct efx_nic *efx); | |
40641ed9 | 1285 | bool (*handle_global_event)(struct efx_channel *channel, efx_qword_t *); |
e42c3d85 | 1286 | int (*fini_dmaq)(struct efx_nic *efx); |
ef2b90ee | 1287 | void (*prepare_flush)(struct efx_nic *efx); |
d5e8cc6c | 1288 | void (*finish_flush)(struct efx_nic *efx); |
e283546c EC |
1289 | void (*prepare_flr)(struct efx_nic *efx); |
1290 | void (*finish_flr)(struct efx_nic *efx); | |
cd0ecc9a BH |
1291 | size_t (*describe_stats)(struct efx_nic *efx, u8 *names); |
1292 | size_t (*update_stats)(struct efx_nic *efx, u64 *full_stats, | |
1293 | struct rtnl_link_stats64 *core_stats); | |
ef2b90ee | 1294 | void (*start_stats)(struct efx_nic *efx); |
f8f3b5ae | 1295 | void (*pull_stats)(struct efx_nic *efx); |
ef2b90ee | 1296 | void (*stop_stats)(struct efx_nic *efx); |
06629f07 | 1297 | void (*set_id_led)(struct efx_nic *efx, enum efx_led_mode mode); |
ef2b90ee | 1298 | void (*push_irq_moderation)(struct efx_channel *channel); |
d3245b28 | 1299 | int (*reconfigure_port)(struct efx_nic *efx); |
9dd3a13b | 1300 | void (*prepare_enable_fc_tx)(struct efx_nic *efx); |
710b208d BH |
1301 | int (*reconfigure_mac)(struct efx_nic *efx); |
1302 | bool (*check_mac_fault)(struct efx_nic *efx); | |
89c758fa BH |
1303 | void (*get_wol)(struct efx_nic *efx, struct ethtool_wolinfo *wol); |
1304 | int (*set_wol)(struct efx_nic *efx, u32 type); | |
1305 | void (*resume_wol)(struct efx_nic *efx); | |
d4f2cecc | 1306 | int (*test_chip)(struct efx_nic *efx, struct efx_self_tests *tests); |
0aa3fbaa | 1307 | int (*test_nvram)(struct efx_nic *efx); |
f3ad5003 BH |
1308 | void (*mcdi_request)(struct efx_nic *efx, |
1309 | const efx_dword_t *hdr, size_t hdr_len, | |
1310 | const efx_dword_t *sdu, size_t sdu_len); | |
1311 | bool (*mcdi_poll_response)(struct efx_nic *efx); | |
1312 | void (*mcdi_read_response)(struct efx_nic *efx, efx_dword_t *pdu, | |
1313 | size_t pdu_offset, size_t pdu_len); | |
1314 | int (*mcdi_poll_reboot)(struct efx_nic *efx); | |
c577e59e | 1315 | void (*mcdi_reboot_detected)(struct efx_nic *efx); |
86094f7f | 1316 | void (*irq_enable_master)(struct efx_nic *efx); |
942e298e | 1317 | int (*irq_test_generate)(struct efx_nic *efx); |
86094f7f BH |
1318 | void (*irq_disable_non_ev)(struct efx_nic *efx); |
1319 | irqreturn_t (*irq_handle_msi)(int irq, void *dev_id); | |
1320 | irqreturn_t (*irq_handle_legacy)(int irq, void *dev_id); | |
1321 | int (*tx_probe)(struct efx_tx_queue *tx_queue); | |
1322 | void (*tx_init)(struct efx_tx_queue *tx_queue); | |
1323 | void (*tx_remove)(struct efx_tx_queue *tx_queue); | |
1324 | void (*tx_write)(struct efx_tx_queue *tx_queue); | |
e9117e50 BK |
1325 | unsigned int (*tx_limit_len)(struct efx_tx_queue *tx_queue, |
1326 | dma_addr_t dma_addr, unsigned int len); | |
267c0157 | 1327 | int (*rx_push_rss_config)(struct efx_nic *efx, bool user, |
f74d1995 | 1328 | const u32 *rx_indir_table, const u8 *key); |
a707d188 | 1329 | int (*rx_pull_rss_config)(struct efx_nic *efx); |
42356d9a EC |
1330 | int (*rx_push_rss_context_config)(struct efx_nic *efx, |
1331 | struct efx_rss_context *ctx, | |
1332 | const u32 *rx_indir_table, | |
1333 | const u8 *key); | |
1334 | int (*rx_pull_rss_context_config)(struct efx_nic *efx, | |
1335 | struct efx_rss_context *ctx); | |
1336 | void (*rx_restore_rss_contexts)(struct efx_nic *efx); | |
86094f7f BH |
1337 | int (*rx_probe)(struct efx_rx_queue *rx_queue); |
1338 | void (*rx_init)(struct efx_rx_queue *rx_queue); | |
1339 | void (*rx_remove)(struct efx_rx_queue *rx_queue); | |
1340 | void (*rx_write)(struct efx_rx_queue *rx_queue); | |
1341 | void (*rx_defer_refill)(struct efx_rx_queue *rx_queue); | |
1342 | int (*ev_probe)(struct efx_channel *channel); | |
261e4d96 | 1343 | int (*ev_init)(struct efx_channel *channel); |
86094f7f BH |
1344 | void (*ev_fini)(struct efx_channel *channel); |
1345 | void (*ev_remove)(struct efx_channel *channel); | |
1346 | int (*ev_process)(struct efx_channel *channel, int quota); | |
1347 | void (*ev_read_ack)(struct efx_channel *channel); | |
1348 | void (*ev_test_generate)(struct efx_channel *channel); | |
add72477 BH |
1349 | int (*filter_table_probe)(struct efx_nic *efx); |
1350 | void (*filter_table_restore)(struct efx_nic *efx); | |
1351 | void (*filter_table_remove)(struct efx_nic *efx); | |
1352 | void (*filter_update_rx_scatter)(struct efx_nic *efx); | |
1353 | s32 (*filter_insert)(struct efx_nic *efx, | |
1354 | struct efx_filter_spec *spec, bool replace); | |
1355 | int (*filter_remove_safe)(struct efx_nic *efx, | |
1356 | enum efx_filter_priority priority, | |
1357 | u32 filter_id); | |
1358 | int (*filter_get_safe)(struct efx_nic *efx, | |
1359 | enum efx_filter_priority priority, | |
1360 | u32 filter_id, struct efx_filter_spec *); | |
fbd79120 BH |
1361 | int (*filter_clear_rx)(struct efx_nic *efx, |
1362 | enum efx_filter_priority priority); | |
add72477 BH |
1363 | u32 (*filter_count_rx_used)(struct efx_nic *efx, |
1364 | enum efx_filter_priority priority); | |
1365 | u32 (*filter_get_rx_id_limit)(struct efx_nic *efx); | |
1366 | s32 (*filter_get_rx_ids)(struct efx_nic *efx, | |
1367 | enum efx_filter_priority priority, | |
1368 | u32 *buf, u32 size); | |
1369 | #ifdef CONFIG_RFS_ACCEL | |
add72477 BH |
1370 | bool (*filter_rfs_expire_one)(struct efx_nic *efx, u32 flow_id, |
1371 | unsigned int index); | |
1372 | #endif | |
45a3fd55 BH |
1373 | #ifdef CONFIG_SFC_MTD |
1374 | int (*mtd_probe)(struct efx_nic *efx); | |
1375 | void (*mtd_rename)(struct efx_mtd_partition *part); | |
1376 | int (*mtd_read)(struct mtd_info *mtd, loff_t start, size_t len, | |
1377 | size_t *retlen, u8 *buffer); | |
1378 | int (*mtd_erase)(struct mtd_info *mtd, loff_t start, size_t len); | |
1379 | int (*mtd_write)(struct mtd_info *mtd, loff_t start, size_t len, | |
1380 | size_t *retlen, const u8 *buffer); | |
1381 | int (*mtd_sync)(struct mtd_info *mtd); | |
1382 | #endif | |
977a5d5d | 1383 | void (*ptp_write_host_time)(struct efx_nic *efx, u32 host_time); |
bd9a265d | 1384 | int (*ptp_set_ts_sync_events)(struct efx_nic *efx, bool en, bool temp); |
9ec06595 DP |
1385 | int (*ptp_set_ts_config)(struct efx_nic *efx, |
1386 | struct hwtstamp_config *init); | |
834e23dd | 1387 | int (*sriov_configure)(struct efx_nic *efx, int num_vfs); |
4a53ea8a AR |
1388 | int (*vlan_rx_add_vid)(struct efx_nic *efx, __be16 proto, u16 vid); |
1389 | int (*vlan_rx_kill_vid)(struct efx_nic *efx, __be16 proto, u16 vid); | |
08a7b29b BK |
1390 | int (*get_phys_port_id)(struct efx_nic *efx, |
1391 | struct netdev_phys_item_id *ppid); | |
d98a4ffe SS |
1392 | int (*sriov_init)(struct efx_nic *efx); |
1393 | void (*sriov_fini)(struct efx_nic *efx); | |
d98a4ffe SS |
1394 | bool (*sriov_wanted)(struct efx_nic *efx); |
1395 | void (*sriov_reset)(struct efx_nic *efx); | |
7fa8d547 SS |
1396 | void (*sriov_flr)(struct efx_nic *efx, unsigned vf_i); |
1397 | int (*sriov_set_vf_mac)(struct efx_nic *efx, int vf_i, u8 *mac); | |
1398 | int (*sriov_set_vf_vlan)(struct efx_nic *efx, int vf_i, u16 vlan, | |
1399 | u8 qos); | |
1400 | int (*sriov_set_vf_spoofchk)(struct efx_nic *efx, int vf_i, | |
1401 | bool spoofchk); | |
1402 | int (*sriov_get_vf_config)(struct efx_nic *efx, int vf_i, | |
1403 | struct ifla_vf_info *ivi); | |
4392dc69 EC |
1404 | int (*sriov_set_vf_link_state)(struct efx_nic *efx, int vf_i, |
1405 | int link_state); | |
6d8aaaf6 DP |
1406 | int (*vswitching_probe)(struct efx_nic *efx); |
1407 | int (*vswitching_restore)(struct efx_nic *efx); | |
1408 | void (*vswitching_remove)(struct efx_nic *efx); | |
0d5e0fbb | 1409 | int (*get_mac_address)(struct efx_nic *efx, unsigned char *perm_addr); |
910c8789 | 1410 | int (*set_mac_address)(struct efx_nic *efx); |
46d1efd8 | 1411 | u32 (*tso_versions)(struct efx_nic *efx); |
e5fbd977 JC |
1412 | int (*udp_tnl_push_ports)(struct efx_nic *efx); |
1413 | int (*udp_tnl_add_port)(struct efx_nic *efx, struct efx_udp_tunnel tnl); | |
1414 | bool (*udp_tnl_has_port)(struct efx_nic *efx, __be16 port); | |
1415 | int (*udp_tnl_del_port)(struct efx_nic *efx, struct efx_udp_tunnel tnl); | |
b895d73e | 1416 | |
daeda630 | 1417 | int revision; |
8ceee660 BH |
1418 | unsigned int txd_ptr_tbl_base; |
1419 | unsigned int rxd_ptr_tbl_base; | |
1420 | unsigned int buf_tbl_base; | |
1421 | unsigned int evq_ptr_tbl_base; | |
1422 | unsigned int evq_rptr_tbl_base; | |
9bbd7d9a | 1423 | u64 max_dma_mask; |
43a3739d JC |
1424 | unsigned int rx_prefix_size; |
1425 | unsigned int rx_hash_offset; | |
bd9a265d | 1426 | unsigned int rx_ts_offset; |
8ceee660 | 1427 | unsigned int rx_buffer_padding; |
85740cdf | 1428 | bool can_rx_scatter; |
e8c68c0a | 1429 | bool always_rx_scatter; |
de1deff9 | 1430 | bool option_descriptors; |
6f9f6ec2 | 1431 | unsigned int min_interrupt_mode; |
8ceee660 | 1432 | unsigned int max_interrupt_mode; |
cc180b69 | 1433 | unsigned int timer_period_max; |
c8f44aff | 1434 | netdev_features_t offload_features; |
df2cd8af | 1435 | int mcdi_max_ver; |
add72477 | 1436 | unsigned int max_rx_ip_filters; |
9ec06595 | 1437 | u32 hwtstamp_filters; |
f74d1995 | 1438 | unsigned int rx_hash_key_size; |
8ceee660 BH |
1439 | }; |
1440 | ||
1441 | /************************************************************************** | |
1442 | * | |
1443 | * Prototypes and inline functions | |
1444 | * | |
1445 | *************************************************************************/ | |
1446 | ||
f7d12cdc BH |
1447 | static inline struct efx_channel * |
1448 | efx_get_channel(struct efx_nic *efx, unsigned index) | |
1449 | { | |
e01b16a7 | 1450 | EFX_WARN_ON_ONCE_PARANOID(index >= efx->n_channels); |
8313aca3 | 1451 | return efx->channel[index]; |
f7d12cdc BH |
1452 | } |
1453 | ||
8ceee660 BH |
1454 | /* Iterate over all used channels */ |
1455 | #define efx_for_each_channel(_channel, _efx) \ | |
8313aca3 BH |
1456 | for (_channel = (_efx)->channel[0]; \ |
1457 | _channel; \ | |
1458 | _channel = (_channel->channel + 1 < (_efx)->n_channels) ? \ | |
1459 | (_efx)->channel[_channel->channel + 1] : NULL) | |
8ceee660 | 1460 | |
7f967c01 BH |
1461 | /* Iterate over all used channels in reverse */ |
1462 | #define efx_for_each_channel_rev(_channel, _efx) \ | |
1463 | for (_channel = (_efx)->channel[(_efx)->n_channels - 1]; \ | |
1464 | _channel; \ | |
1465 | _channel = _channel->channel ? \ | |
1466 | (_efx)->channel[_channel->channel - 1] : NULL) | |
1467 | ||
97653431 BH |
1468 | static inline struct efx_tx_queue * |
1469 | efx_get_tx_queue(struct efx_nic *efx, unsigned index, unsigned type) | |
1470 | { | |
e01b16a7 EC |
1471 | EFX_WARN_ON_ONCE_PARANOID(index >= efx->n_tx_channels || |
1472 | type >= EFX_TXQ_TYPES); | |
97653431 BH |
1473 | return &efx->channel[efx->tx_channel_offset + index]->tx_queue[type]; |
1474 | } | |
f7d12cdc | 1475 | |
525da907 BH |
1476 | static inline bool efx_channel_has_tx_queues(struct efx_channel *channel) |
1477 | { | |
2935e3c3 EC |
1478 | return channel->type && channel->type->want_txqs && |
1479 | channel->type->want_txqs(channel); | |
525da907 BH |
1480 | } |
1481 | ||
f7d12cdc BH |
1482 | static inline struct efx_tx_queue * |
1483 | efx_channel_get_tx_queue(struct efx_channel *channel, unsigned type) | |
1484 | { | |
e01b16a7 EC |
1485 | EFX_WARN_ON_ONCE_PARANOID(!efx_channel_has_tx_queues(channel) || |
1486 | type >= EFX_TXQ_TYPES); | |
525da907 | 1487 | return &channel->tx_queue[type]; |
f7d12cdc | 1488 | } |
8ceee660 | 1489 | |
94b274bf BH |
1490 | static inline bool efx_tx_queue_used(struct efx_tx_queue *tx_queue) |
1491 | { | |
1492 | return !(tx_queue->efx->net_dev->num_tc < 2 && | |
1493 | tx_queue->queue & EFX_TXQ_TYPE_HIGHPRI); | |
1494 | } | |
1495 | ||
8ceee660 BH |
1496 | /* Iterate over all TX queues belonging to a channel */ |
1497 | #define efx_for_each_channel_tx_queue(_tx_queue, _channel) \ | |
525da907 BH |
1498 | if (!efx_channel_has_tx_queues(_channel)) \ |
1499 | ; \ | |
1500 | else \ | |
1501 | for (_tx_queue = (_channel)->tx_queue; \ | |
94b274bf BH |
1502 | _tx_queue < (_channel)->tx_queue + EFX_TXQ_TYPES && \ |
1503 | efx_tx_queue_used(_tx_queue); \ | |
525da907 | 1504 | _tx_queue++) |
8ceee660 | 1505 | |
94b274bf BH |
1506 | /* Iterate over all possible TX queues belonging to a channel */ |
1507 | #define efx_for_each_possible_channel_tx_queue(_tx_queue, _channel) \ | |
73e0026f BH |
1508 | if (!efx_channel_has_tx_queues(_channel)) \ |
1509 | ; \ | |
1510 | else \ | |
1511 | for (_tx_queue = (_channel)->tx_queue; \ | |
1512 | _tx_queue < (_channel)->tx_queue + EFX_TXQ_TYPES; \ | |
1513 | _tx_queue++) | |
94b274bf | 1514 | |
525da907 BH |
1515 | static inline bool efx_channel_has_rx_queue(struct efx_channel *channel) |
1516 | { | |
79d68b37 | 1517 | return channel->rx_queue.core_index >= 0; |
525da907 BH |
1518 | } |
1519 | ||
f7d12cdc BH |
1520 | static inline struct efx_rx_queue * |
1521 | efx_channel_get_rx_queue(struct efx_channel *channel) | |
1522 | { | |
e01b16a7 | 1523 | EFX_WARN_ON_ONCE_PARANOID(!efx_channel_has_rx_queue(channel)); |
525da907 | 1524 | return &channel->rx_queue; |
f7d12cdc BH |
1525 | } |
1526 | ||
8ceee660 BH |
1527 | /* Iterate over all RX queues belonging to a channel */ |
1528 | #define efx_for_each_channel_rx_queue(_rx_queue, _channel) \ | |
525da907 BH |
1529 | if (!efx_channel_has_rx_queue(_channel)) \ |
1530 | ; \ | |
1531 | else \ | |
1532 | for (_rx_queue = &(_channel)->rx_queue; \ | |
1533 | _rx_queue; \ | |
1534 | _rx_queue = NULL) | |
8ceee660 | 1535 | |
ba1e8a35 BH |
1536 | static inline struct efx_channel * |
1537 | efx_rx_queue_channel(struct efx_rx_queue *rx_queue) | |
1538 | { | |
8313aca3 | 1539 | return container_of(rx_queue, struct efx_channel, rx_queue); |
ba1e8a35 BH |
1540 | } |
1541 | ||
1542 | static inline int efx_rx_queue_index(struct efx_rx_queue *rx_queue) | |
1543 | { | |
8313aca3 | 1544 | return efx_rx_queue_channel(rx_queue)->channel; |
ba1e8a35 BH |
1545 | } |
1546 | ||
8ceee660 BH |
1547 | /* Returns a pointer to the specified receive buffer in the RX |
1548 | * descriptor queue. | |
1549 | */ | |
1550 | static inline struct efx_rx_buffer *efx_rx_buffer(struct efx_rx_queue *rx_queue, | |
1551 | unsigned int index) | |
1552 | { | |
807540ba | 1553 | return &rx_queue->buffer[index]; |
8ceee660 BH |
1554 | } |
1555 | ||
8ceee660 BH |
1556 | /** |
1557 | * EFX_MAX_FRAME_LEN - calculate maximum frame length | |
1558 | * | |
1559 | * This calculates the maximum frame length that will be used for a | |
1560 | * given MTU. The frame length will be equal to the MTU plus a | |
1561 | * constant amount of header space and padding. This is the quantity | |
1562 | * that the net driver will program into the MAC as the maximum frame | |
1563 | * length. | |
1564 | * | |
754c653a | 1565 | * The 10G MAC requires 8-byte alignment on the frame |
8ceee660 | 1566 | * length, so we round up to the nearest 8. |
cc11763b BH |
1567 | * |
1568 | * Re-clocking by the XGXS on RX can reduce an IPG to 32 bits (half an | |
1569 | * XGMII cycle). If the frame length reaches the maximum value in the | |
1570 | * same cycle, the XMAC can miss the IPG altogether. We work around | |
1571 | * this by adding a further 16 bytes. | |
8ceee660 | 1572 | */ |
6f24e5d5 | 1573 | #define EFX_FRAME_PAD 16 |
8ceee660 | 1574 | #define EFX_MAX_FRAME_LEN(mtu) \ |
6f24e5d5 | 1575 | (ALIGN(((mtu) + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN + EFX_FRAME_PAD), 8)) |
8ceee660 | 1576 | |
7c236c43 SH |
1577 | static inline bool efx_xmit_with_hwtstamp(struct sk_buff *skb) |
1578 | { | |
1579 | return skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP; | |
1580 | } | |
1581 | static inline void efx_xmit_hwtstamp_pending(struct sk_buff *skb) | |
1582 | { | |
1583 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; | |
1584 | } | |
8ceee660 | 1585 | |
e4478ad1 MH |
1586 | /* Get all supported features. |
1587 | * If a feature is not fixed, it is present in hw_features. | |
1588 | * If a feature is fixed, it does not present in hw_features, but | |
1589 | * always in features. | |
1590 | */ | |
1591 | static inline netdev_features_t efx_supported_features(const struct efx_nic *efx) | |
1592 | { | |
1593 | const struct net_device *net_dev = efx->net_dev; | |
1594 | ||
1595 | return net_dev->features | net_dev->hw_features; | |
1596 | } | |
1597 | ||
e9117e50 BK |
1598 | /* Get the current TX queue insert index. */ |
1599 | static inline unsigned int | |
1600 | efx_tx_queue_get_insert_index(const struct efx_tx_queue *tx_queue) | |
1601 | { | |
1602 | return tx_queue->insert_count & tx_queue->ptr_mask; | |
1603 | } | |
1604 | ||
1605 | /* Get a TX buffer. */ | |
1606 | static inline struct efx_tx_buffer * | |
1607 | __efx_tx_queue_get_insert_buffer(const struct efx_tx_queue *tx_queue) | |
1608 | { | |
1609 | return &tx_queue->buffer[efx_tx_queue_get_insert_index(tx_queue)]; | |
1610 | } | |
1611 | ||
1612 | /* Get a TX buffer, checking it's not currently in use. */ | |
1613 | static inline struct efx_tx_buffer * | |
1614 | efx_tx_queue_get_insert_buffer(const struct efx_tx_queue *tx_queue) | |
1615 | { | |
1616 | struct efx_tx_buffer *buffer = | |
1617 | __efx_tx_queue_get_insert_buffer(tx_queue); | |
1618 | ||
e01b16a7 EC |
1619 | EFX_WARN_ON_ONCE_PARANOID(buffer->len); |
1620 | EFX_WARN_ON_ONCE_PARANOID(buffer->flags); | |
1621 | EFX_WARN_ON_ONCE_PARANOID(buffer->unmap_len); | |
e9117e50 BK |
1622 | |
1623 | return buffer; | |
1624 | } | |
1625 | ||
8ceee660 | 1626 | #endif /* EFX_NET_DRIVER_H */ |