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8ceee660 | 1 | /**************************************************************************** |
f7a6d2c4 | 2 | * Driver for Solarflare network controllers and boards |
8ceee660 | 3 | * Copyright 2005-2006 Fen Systems Ltd. |
f7a6d2c4 | 4 | * Copyright 2005-2013 Solarflare Communications Inc. |
8ceee660 BH |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License version 2 as published | |
8 | * by the Free Software Foundation, incorporated herein by reference. | |
9 | */ | |
10 | ||
11 | /* Common definitions for all Efx net driver code */ | |
12 | ||
13 | #ifndef EFX_NET_DRIVER_H | |
14 | #define EFX_NET_DRIVER_H | |
15 | ||
8ceee660 BH |
16 | #include <linux/netdevice.h> |
17 | #include <linux/etherdevice.h> | |
18 | #include <linux/ethtool.h> | |
19 | #include <linux/if_vlan.h> | |
90d683af | 20 | #include <linux/timer.h> |
68e7f45e | 21 | #include <linux/mdio.h> |
8ceee660 BH |
22 | #include <linux/list.h> |
23 | #include <linux/pci.h> | |
24 | #include <linux/device.h> | |
25 | #include <linux/highmem.h> | |
26 | #include <linux/workqueue.h> | |
cd2d5b52 | 27 | #include <linux/mutex.h> |
0d322413 | 28 | #include <linux/rwsem.h> |
10ed61c4 | 29 | #include <linux/vmalloc.h> |
37b5a603 | 30 | #include <linux/i2c.h> |
45a3fd55 | 31 | #include <linux/mtd/mtd.h> |
36763266 | 32 | #include <net/busy_poll.h> |
8ceee660 BH |
33 | |
34 | #include "enum.h" | |
35 | #include "bitfield.h" | |
add72477 | 36 | #include "filter.h" |
8ceee660 | 37 | |
8ceee660 BH |
38 | /************************************************************************** |
39 | * | |
40 | * Build definitions | |
41 | * | |
42 | **************************************************************************/ | |
c5d5f5fd | 43 | |
8127d661 | 44 | #define EFX_DRIVER_VERSION "4.0" |
8ceee660 | 45 | |
5f3f9d6c | 46 | #ifdef DEBUG |
8ceee660 BH |
47 | #define EFX_BUG_ON_PARANOID(x) BUG_ON(x) |
48 | #define EFX_WARN_ON_PARANOID(x) WARN_ON(x) | |
49 | #else | |
50 | #define EFX_BUG_ON_PARANOID(x) do {} while (0) | |
51 | #define EFX_WARN_ON_PARANOID(x) do {} while (0) | |
52 | #endif | |
53 | ||
8ceee660 BH |
54 | /************************************************************************** |
55 | * | |
56 | * Efx data structures | |
57 | * | |
58 | **************************************************************************/ | |
59 | ||
a16e5b24 | 60 | #define EFX_MAX_CHANNELS 32U |
8ceee660 | 61 | #define EFX_MAX_RX_QUEUES EFX_MAX_CHANNELS |
cd2d5b52 | 62 | #define EFX_EXTRA_CHANNEL_IOV 0 |
7c236c43 SH |
63 | #define EFX_EXTRA_CHANNEL_PTP 1 |
64 | #define EFX_MAX_EXTRA_CHANNELS 2U | |
8ceee660 | 65 | |
a4900ac9 BH |
66 | /* Checksum generation is a per-queue option in hardware, so each |
67 | * queue visible to the networking core is backed by two hardware TX | |
68 | * queues. */ | |
94b274bf BH |
69 | #define EFX_MAX_TX_TC 2 |
70 | #define EFX_MAX_CORE_TX_QUEUES (EFX_MAX_TX_TC * EFX_MAX_CHANNELS) | |
71 | #define EFX_TXQ_TYPE_OFFLOAD 1 /* flag */ | |
72 | #define EFX_TXQ_TYPE_HIGHPRI 2 /* flag */ | |
73 | #define EFX_TXQ_TYPES 4 | |
74 | #define EFX_MAX_TX_QUEUES (EFX_TXQ_TYPES * EFX_MAX_CHANNELS) | |
60ac1065 | 75 | |
85740cdf BH |
76 | /* Maximum possible MTU the driver supports */ |
77 | #define EFX_MAX_MTU (9 * 1024) | |
78 | ||
72a31d85 BK |
79 | /* Minimum MTU, from RFC791 (IP) */ |
80 | #define EFX_MIN_MTU 68 | |
81 | ||
950c54df BH |
82 | /* Size of an RX scatter buffer. Small enough to pack 2 into a 4K page, |
83 | * and should be a multiple of the cache line size. | |
84 | */ | |
85 | #define EFX_RX_USR_BUF_SIZE (2048 - 256) | |
86 | ||
87 | /* If possible, we should ensure cache line alignment at start and end | |
88 | * of every buffer. Otherwise, we just need to ensure 4-byte | |
89 | * alignment of the network header. | |
90 | */ | |
91 | #if NET_IP_ALIGN == 0 | |
92 | #define EFX_RX_BUF_ALIGNMENT L1_CACHE_BYTES | |
93 | #else | |
94 | #define EFX_RX_BUF_ALIGNMENT 4 | |
95 | #endif | |
85740cdf | 96 | |
7c236c43 SH |
97 | /* Forward declare Precision Time Protocol (PTP) support structure. */ |
98 | struct efx_ptp_data; | |
9ec06595 | 99 | struct hwtstamp_config; |
7c236c43 | 100 | |
d4f2cecc BH |
101 | struct efx_self_tests; |
102 | ||
8ceee660 | 103 | /** |
caa75586 BH |
104 | * struct efx_buffer - A general-purpose DMA buffer |
105 | * @addr: host base address of the buffer | |
8ceee660 BH |
106 | * @dma_addr: DMA base address of the buffer |
107 | * @len: Buffer length, in bytes | |
8ceee660 | 108 | * |
caa75586 BH |
109 | * The NIC uses these buffers for its interrupt status registers and |
110 | * MAC stats dumps. | |
8ceee660 | 111 | */ |
caa75586 | 112 | struct efx_buffer { |
8ceee660 BH |
113 | void *addr; |
114 | dma_addr_t dma_addr; | |
115 | unsigned int len; | |
caa75586 BH |
116 | }; |
117 | ||
118 | /** | |
119 | * struct efx_special_buffer - DMA buffer entered into buffer table | |
120 | * @buf: Standard &struct efx_buffer | |
121 | * @index: Buffer index within controller;s buffer table | |
122 | * @entries: Number of buffer table entries | |
123 | * | |
124 | * The NIC has a buffer table that maps buffers of size %EFX_BUF_SIZE. | |
125 | * Event and descriptor rings are addressed via one or more buffer | |
126 | * table entries (and so can be physically non-contiguous, although we | |
127 | * currently do not take advantage of that). On Falcon and Siena we | |
128 | * have to take care of allocating and initialising the entries | |
129 | * ourselves. On later hardware this is managed by the firmware and | |
130 | * @index and @entries are left as 0. | |
131 | */ | |
132 | struct efx_special_buffer { | |
133 | struct efx_buffer buf; | |
5bbe2f4f BH |
134 | unsigned int index; |
135 | unsigned int entries; | |
8ceee660 BH |
136 | }; |
137 | ||
138 | /** | |
7668ff9c BH |
139 | * struct efx_tx_buffer - buffer state for a TX descriptor |
140 | * @skb: When @flags & %EFX_TX_BUF_SKB, the associated socket buffer to be | |
141 | * freed when descriptor completes | |
f7251a9c BH |
142 | * @heap_buf: When @flags & %EFX_TX_BUF_HEAP, the associated heap buffer to be |
143 | * freed when descriptor completes. | |
ba8977bd | 144 | * @option: When @flags & %EFX_TX_BUF_OPTION, a NIC-specific option descriptor. |
8ceee660 | 145 | * @dma_addr: DMA address of the fragment. |
7668ff9c | 146 | * @flags: Flags for allocation and DMA mapping type |
8ceee660 BH |
147 | * @len: Length of this fragment. |
148 | * This field is zero when the queue slot is empty. | |
8ceee660 | 149 | * @unmap_len: Length of this fragment to unmap |
2acdb92e AR |
150 | * @dma_offset: Offset of @dma_addr from the address of the backing DMA mapping. |
151 | * Only valid if @unmap_len != 0. | |
8ceee660 BH |
152 | */ |
153 | struct efx_tx_buffer { | |
7668ff9c BH |
154 | union { |
155 | const struct sk_buff *skb; | |
f7251a9c | 156 | void *heap_buf; |
7668ff9c | 157 | }; |
ba8977bd BH |
158 | union { |
159 | efx_qword_t option; | |
160 | dma_addr_t dma_addr; | |
161 | }; | |
7668ff9c | 162 | unsigned short flags; |
8ceee660 | 163 | unsigned short len; |
8ceee660 | 164 | unsigned short unmap_len; |
2acdb92e | 165 | unsigned short dma_offset; |
8ceee660 | 166 | }; |
7668ff9c BH |
167 | #define EFX_TX_BUF_CONT 1 /* not last descriptor of packet */ |
168 | #define EFX_TX_BUF_SKB 2 /* buffer is last part of skb */ | |
f7251a9c | 169 | #define EFX_TX_BUF_HEAP 4 /* buffer was allocated with kmalloc() */ |
7668ff9c | 170 | #define EFX_TX_BUF_MAP_SINGLE 8 /* buffer was mapped with dma_map_single() */ |
ba8977bd | 171 | #define EFX_TX_BUF_OPTION 0x10 /* empty buffer for option descriptor */ |
8ceee660 BH |
172 | |
173 | /** | |
174 | * struct efx_tx_queue - An Efx TX queue | |
175 | * | |
176 | * This is a ring buffer of TX fragments. | |
177 | * Since the TX completion path always executes on the same | |
178 | * CPU and the xmit path can operate on different CPUs, | |
179 | * performance is increased by ensuring that the completion | |
180 | * path and the xmit path operate on different cache lines. | |
181 | * This is particularly important if the xmit path is always | |
182 | * executing on one CPU which is different from the completion | |
183 | * path. There is also a cache line for members which are | |
184 | * read but not written on the fast path. | |
185 | * | |
186 | * @efx: The associated Efx NIC | |
187 | * @queue: DMA queue number | |
93171b14 | 188 | * @tso_version: Version of TSO in use for this queue. |
8ceee660 | 189 | * @channel: The associated channel |
c04bfc6b | 190 | * @core_txq: The networking core TX queue structure |
8ceee660 | 191 | * @buffer: The software buffer ring |
f7251a9c | 192 | * @tsoh_page: Array of pages of TSO header buffers |
8ceee660 | 193 | * @txd: The hardware descriptor ring |
ecc910f5 | 194 | * @ptr_mask: The size of the ring minus 1. |
183233be BH |
195 | * @piobuf: PIO buffer region for this TX queue (shared with its partner). |
196 | * Size of the region is efx_piobuf_size. | |
197 | * @piobuf_offset: Buffer offset to be specified in PIO descriptors | |
94b274bf | 198 | * @initialised: Has hardware queue been initialised? |
8ceee660 BH |
199 | * @read_count: Current read pointer. |
200 | * This is the number of buffers that have been removed from both rings. | |
cd38557d BH |
201 | * @old_write_count: The value of @write_count when last checked. |
202 | * This is here for performance reasons. The xmit path will | |
203 | * only get the up-to-date value of @write_count if this | |
204 | * variable indicates that the queue is empty. This is to | |
205 | * avoid cache-line ping-pong between the xmit path and the | |
206 | * completion path. | |
02e12165 | 207 | * @merge_events: Number of TX merged completion events |
8ceee660 BH |
208 | * @insert_count: Current insert pointer |
209 | * This is the number of buffers that have been added to the | |
210 | * software ring. | |
211 | * @write_count: Current write pointer | |
212 | * This is the number of buffers that have been added to the | |
213 | * hardware ring. | |
214 | * @old_read_count: The value of read_count when last checked. | |
215 | * This is here for performance reasons. The xmit path will | |
216 | * only get the up-to-date value of read_count if this | |
217 | * variable indicates that the queue is full. This is to | |
218 | * avoid cache-line ping-pong between the xmit path and the | |
219 | * completion path. | |
b9b39b62 BH |
220 | * @tso_bursts: Number of times TSO xmit invoked by kernel |
221 | * @tso_long_headers: Number of packets with headers too long for standard | |
222 | * blocks | |
223 | * @tso_packets: Number of packets via the TSO xmit path | |
cd38557d | 224 | * @pushes: Number of times the TX push feature has been used |
ee45fd92 | 225 | * @pio_packets: Number of times the TX PIO feature has been used |
b2663a4f | 226 | * @xmit_more_available: Are any packets waiting to be pushed to the NIC |
cd38557d BH |
227 | * @empty_read_count: If the completion path has seen the queue as empty |
228 | * and the transmission path has not yet checked this, the value of | |
229 | * @read_count bitwise-added to %EFX_EMPTY_COUNT_VALID; otherwise 0. | |
8ceee660 BH |
230 | */ |
231 | struct efx_tx_queue { | |
232 | /* Members which don't change on the fast path */ | |
233 | struct efx_nic *efx ____cacheline_aligned_in_smp; | |
a4900ac9 | 234 | unsigned queue; |
93171b14 | 235 | unsigned int tso_version; |
8ceee660 | 236 | struct efx_channel *channel; |
c04bfc6b | 237 | struct netdev_queue *core_txq; |
8ceee660 | 238 | struct efx_tx_buffer *buffer; |
f7251a9c | 239 | struct efx_buffer *tsoh_page; |
8ceee660 | 240 | struct efx_special_buffer txd; |
ecc910f5 | 241 | unsigned int ptr_mask; |
183233be BH |
242 | void __iomem *piobuf; |
243 | unsigned int piobuf_offset; | |
94b274bf | 244 | bool initialised; |
8ceee660 BH |
245 | |
246 | /* Members used mainly on the completion path */ | |
247 | unsigned int read_count ____cacheline_aligned_in_smp; | |
cd38557d | 248 | unsigned int old_write_count; |
02e12165 | 249 | unsigned int merge_events; |
c936835c PD |
250 | unsigned int bytes_compl; |
251 | unsigned int pkts_compl; | |
8ceee660 BH |
252 | |
253 | /* Members used only on the xmit path */ | |
254 | unsigned int insert_count ____cacheline_aligned_in_smp; | |
255 | unsigned int write_count; | |
256 | unsigned int old_read_count; | |
b9b39b62 BH |
257 | unsigned int tso_bursts; |
258 | unsigned int tso_long_headers; | |
259 | unsigned int tso_packets; | |
cd38557d | 260 | unsigned int pushes; |
ee45fd92 | 261 | unsigned int pio_packets; |
b2663a4f | 262 | bool xmit_more_available; |
8ccf3800 AR |
263 | /* Statistics to supplement MAC stats */ |
264 | unsigned long tx_packets; | |
cd38557d BH |
265 | |
266 | /* Members shared between paths and sometimes updated */ | |
267 | unsigned int empty_read_count ____cacheline_aligned_in_smp; | |
268 | #define EFX_EMPTY_COUNT_VALID 0x80000000 | |
525d9e82 | 269 | atomic_t flush_outstanding; |
8ceee660 BH |
270 | }; |
271 | ||
272 | /** | |
273 | * struct efx_rx_buffer - An Efx RX data buffer | |
274 | * @dma_addr: DMA base address of the buffer | |
97d48a10 | 275 | * @page: The associated page buffer. |
db339569 | 276 | * Will be %NULL if the buffer slot is currently free. |
b74e3e8c BH |
277 | * @page_offset: If pending: offset in @page of DMA base address. |
278 | * If completed: offset in @page of Ethernet header. | |
80c2e716 BH |
279 | * @len: If pending: length for DMA descriptor. |
280 | * If completed: received length, excluding hash prefix. | |
85740cdf BH |
281 | * @flags: Flags for buffer and packet state. These are only set on the |
282 | * first buffer of a scattered packet. | |
8ceee660 BH |
283 | */ |
284 | struct efx_rx_buffer { | |
285 | dma_addr_t dma_addr; | |
97d48a10 | 286 | struct page *page; |
b590ace0 BH |
287 | u16 page_offset; |
288 | u16 len; | |
db339569 | 289 | u16 flags; |
8ceee660 | 290 | }; |
179ea7f0 | 291 | #define EFX_RX_BUF_LAST_IN_PAGE 0x0001 |
db339569 BH |
292 | #define EFX_RX_PKT_CSUMMED 0x0002 |
293 | #define EFX_RX_PKT_DISCARD 0x0004 | |
d07df8ec | 294 | #define EFX_RX_PKT_TCP 0x0040 |
3dced740 | 295 | #define EFX_RX_PKT_PREFIX_LEN 0x0080 /* length is in prefix only */ |
8ceee660 | 296 | |
62b330ba SH |
297 | /** |
298 | * struct efx_rx_page_state - Page-based rx buffer state | |
299 | * | |
300 | * Inserted at the start of every page allocated for receive buffers. | |
301 | * Used to facilitate sharing dma mappings between recycled rx buffers | |
302 | * and those passed up to the kernel. | |
303 | * | |
62b330ba SH |
304 | * @dma_addr: The dma address of this page. |
305 | */ | |
306 | struct efx_rx_page_state { | |
62b330ba SH |
307 | dma_addr_t dma_addr; |
308 | ||
309 | unsigned int __pad[0] ____cacheline_aligned; | |
310 | }; | |
311 | ||
8ceee660 BH |
312 | /** |
313 | * struct efx_rx_queue - An Efx RX queue | |
314 | * @efx: The associated Efx NIC | |
79d68b37 SH |
315 | * @core_index: Index of network core RX queue. Will be >= 0 iff this |
316 | * is associated with a real RX queue. | |
8ceee660 BH |
317 | * @buffer: The software buffer ring |
318 | * @rxd: The hardware descriptor ring | |
ecc910f5 | 319 | * @ptr_mask: The size of the ring minus 1. |
d8aec745 | 320 | * @refill_enabled: Enable refill whenever fill level is low |
9f2cb71c BH |
321 | * @flush_pending: Set when a RX flush is pending. Has the same lifetime as |
322 | * @rxq_flush_pending. | |
8ceee660 BH |
323 | * @added_count: Number of buffers added to the receive queue. |
324 | * @notified_count: Number of buffers given to NIC (<= @added_count). | |
325 | * @removed_count: Number of buffers removed from the receive queue. | |
e8c68c0a JC |
326 | * @scatter_n: Used by NIC specific receive code. |
327 | * @scatter_len: Used by NIC specific receive code. | |
2768935a DP |
328 | * @page_ring: The ring to store DMA mapped pages for reuse. |
329 | * @page_add: Counter to calculate the write pointer for the recycle ring. | |
330 | * @page_remove: Counter to calculate the read pointer for the recycle ring. | |
331 | * @page_recycle_count: The number of pages that have been recycled. | |
332 | * @page_recycle_failed: The number of pages that couldn't be recycled because | |
333 | * the kernel still held a reference to them. | |
334 | * @page_recycle_full: The number of pages that were released because the | |
335 | * recycle ring was full. | |
336 | * @page_ptr_mask: The number of pages in the RX recycle ring minus 1. | |
8ceee660 BH |
337 | * @max_fill: RX descriptor maximum fill level (<= ring size) |
338 | * @fast_fill_trigger: RX descriptor fill level that will trigger a fast fill | |
339 | * (<= @max_fill) | |
8ceee660 BH |
340 | * @min_fill: RX descriptor minimum non-zero fill level. |
341 | * This records the minimum fill level observed when a ring | |
342 | * refill was triggered. | |
2768935a | 343 | * @recycle_count: RX buffer recycle counter. |
90d683af | 344 | * @slow_fill: Timer used to defer efx_nic_generate_fill_event(). |
8ceee660 BH |
345 | */ |
346 | struct efx_rx_queue { | |
347 | struct efx_nic *efx; | |
79d68b37 | 348 | int core_index; |
8ceee660 BH |
349 | struct efx_rx_buffer *buffer; |
350 | struct efx_special_buffer rxd; | |
ecc910f5 | 351 | unsigned int ptr_mask; |
d8aec745 | 352 | bool refill_enabled; |
9f2cb71c | 353 | bool flush_pending; |
8ceee660 | 354 | |
9bc2fc9b BH |
355 | unsigned int added_count; |
356 | unsigned int notified_count; | |
357 | unsigned int removed_count; | |
85740cdf | 358 | unsigned int scatter_n; |
e8c68c0a | 359 | unsigned int scatter_len; |
2768935a DP |
360 | struct page **page_ring; |
361 | unsigned int page_add; | |
362 | unsigned int page_remove; | |
363 | unsigned int page_recycle_count; | |
364 | unsigned int page_recycle_failed; | |
365 | unsigned int page_recycle_full; | |
366 | unsigned int page_ptr_mask; | |
8ceee660 BH |
367 | unsigned int max_fill; |
368 | unsigned int fast_fill_trigger; | |
8ceee660 BH |
369 | unsigned int min_fill; |
370 | unsigned int min_overfill; | |
2768935a | 371 | unsigned int recycle_count; |
90d683af | 372 | struct timer_list slow_fill; |
8ceee660 | 373 | unsigned int slow_fill_count; |
8ccf3800 AR |
374 | /* Statistics to supplement MAC stats */ |
375 | unsigned long rx_packets; | |
8ceee660 BH |
376 | }; |
377 | ||
bd9a265d JC |
378 | enum efx_sync_events_state { |
379 | SYNC_EVENTS_DISABLED = 0, | |
380 | SYNC_EVENTS_QUIESCENT, | |
381 | SYNC_EVENTS_REQUESTED, | |
382 | SYNC_EVENTS_VALID, | |
383 | }; | |
384 | ||
8ceee660 BH |
385 | /** |
386 | * struct efx_channel - An Efx channel | |
387 | * | |
388 | * A channel comprises an event queue, at least one TX queue, at least | |
389 | * one RX queue, and an associated tasklet for processing the event | |
390 | * queue. | |
391 | * | |
392 | * @efx: Associated Efx NIC | |
8ceee660 | 393 | * @channel: Channel instance number |
7f967c01 | 394 | * @type: Channel type definition |
be3fc09c | 395 | * @eventq_init: Event queue initialised flag |
8ceee660 BH |
396 | * @enabled: Channel enabled indicator |
397 | * @irq: IRQ number (MSI and MSI-X only) | |
539de7c5 | 398 | * @irq_moderation_us: IRQ moderation value (in microseconds) |
8ceee660 BH |
399 | * @napi_dev: Net device used with NAPI |
400 | * @napi_str: NAPI control structure | |
36763266 AR |
401 | * @state: state for NAPI vs busy polling |
402 | * @state_lock: lock protecting @state | |
8ceee660 | 403 | * @eventq: Event queue buffer |
ecc910f5 | 404 | * @eventq_mask: Event queue pointer mask |
8ceee660 | 405 | * @eventq_read_ptr: Event queue read pointer |
dd40781e | 406 | * @event_test_cpu: Last CPU to handle interrupt or test event for this channel |
6fb70fd1 BH |
407 | * @irq_count: Number of IRQs since last adaptive moderation decision |
408 | * @irq_mod_score: IRQ moderation score | |
faf8dcc1 JC |
409 | * @rps_flow_id: Flow IDs of filters allocated for accelerated RFS, |
410 | * indexed by filter ID | |
8ceee660 | 411 | * @n_rx_tobe_disc: Count of RX_TOBE_DISC errors |
8ceee660 BH |
412 | * @n_rx_ip_hdr_chksum_err: Count of RX IP header checksum errors |
413 | * @n_rx_tcp_udp_chksum_err: Count of RX TCP and UDP checksum errors | |
c1ac403b | 414 | * @n_rx_mcast_mismatch: Count of unmatched multicast frames |
8ceee660 BH |
415 | * @n_rx_frm_trunc: Count of RX_FRM_TRUNC errors |
416 | * @n_rx_overlength: Count of RX_OVERLENGTH errors | |
417 | * @n_skbuff_leaks: Count of skbuffs leaked due to RX overrun | |
85740cdf BH |
418 | * @n_rx_nodesc_trunc: Number of RX packets truncated and then dropped due to |
419 | * lack of descriptors | |
8127d661 BH |
420 | * @n_rx_merge_events: Number of RX merged completion events |
421 | * @n_rx_merge_packets: Number of RX packets completed by merged events | |
85740cdf BH |
422 | * @rx_pkt_n_frags: Number of fragments in next packet to be delivered by |
423 | * __efx_rx_packet(), or zero if there is none | |
424 | * @rx_pkt_index: Ring index of first buffer for next packet to be delivered | |
425 | * by __efx_rx_packet(), if @rx_pkt_n_frags != 0 | |
8313aca3 | 426 | * @rx_queue: RX queue for this channel |
8313aca3 | 427 | * @tx_queue: TX queues for this channel |
bd9a265d JC |
428 | * @sync_events_state: Current state of sync events on this channel |
429 | * @sync_timestamp_major: Major part of the last ptp sync event | |
430 | * @sync_timestamp_minor: Minor part of the last ptp sync event | |
8ceee660 BH |
431 | */ |
432 | struct efx_channel { | |
433 | struct efx_nic *efx; | |
8ceee660 | 434 | int channel; |
7f967c01 | 435 | const struct efx_channel_type *type; |
be3fc09c | 436 | bool eventq_init; |
dc8cfa55 | 437 | bool enabled; |
8ceee660 | 438 | int irq; |
539de7c5 | 439 | unsigned int irq_moderation_us; |
8ceee660 BH |
440 | struct net_device *napi_dev; |
441 | struct napi_struct napi_str; | |
36763266 | 442 | #ifdef CONFIG_NET_RX_BUSY_POLL |
c0f9c7e4 BK |
443 | unsigned long busy_poll_state; |
444 | #endif | |
8ceee660 | 445 | struct efx_special_buffer eventq; |
ecc910f5 | 446 | unsigned int eventq_mask; |
8ceee660 | 447 | unsigned int eventq_read_ptr; |
dd40781e | 448 | int event_test_cpu; |
8ceee660 | 449 | |
6fb70fd1 BH |
450 | unsigned int irq_count; |
451 | unsigned int irq_mod_score; | |
64d8ad6d BH |
452 | #ifdef CONFIG_RFS_ACCEL |
453 | unsigned int rfs_filters_added; | |
faf8dcc1 JC |
454 | #define RPS_FLOW_ID_INVALID 0xFFFFFFFF |
455 | u32 *rps_flow_id; | |
64d8ad6d | 456 | #endif |
6fb70fd1 | 457 | |
8ceee660 | 458 | unsigned n_rx_tobe_disc; |
8ceee660 BH |
459 | unsigned n_rx_ip_hdr_chksum_err; |
460 | unsigned n_rx_tcp_udp_chksum_err; | |
c1ac403b | 461 | unsigned n_rx_mcast_mismatch; |
8ceee660 BH |
462 | unsigned n_rx_frm_trunc; |
463 | unsigned n_rx_overlength; | |
464 | unsigned n_skbuff_leaks; | |
85740cdf | 465 | unsigned int n_rx_nodesc_trunc; |
8127d661 BH |
466 | unsigned int n_rx_merge_events; |
467 | unsigned int n_rx_merge_packets; | |
8ceee660 | 468 | |
85740cdf BH |
469 | unsigned int rx_pkt_n_frags; |
470 | unsigned int rx_pkt_index; | |
8ceee660 | 471 | |
8313aca3 | 472 | struct efx_rx_queue rx_queue; |
94b274bf | 473 | struct efx_tx_queue tx_queue[EFX_TXQ_TYPES]; |
bd9a265d JC |
474 | |
475 | enum efx_sync_events_state sync_events_state; | |
476 | u32 sync_timestamp_major; | |
477 | u32 sync_timestamp_minor; | |
8ceee660 BH |
478 | }; |
479 | ||
36763266 | 480 | #ifdef CONFIG_NET_RX_BUSY_POLL |
c0f9c7e4 BK |
481 | enum efx_channel_busy_poll_state { |
482 | EFX_CHANNEL_STATE_IDLE = 0, | |
483 | EFX_CHANNEL_STATE_NAPI = BIT(0), | |
484 | EFX_CHANNEL_STATE_NAPI_REQ_BIT = 1, | |
485 | EFX_CHANNEL_STATE_NAPI_REQ = BIT(1), | |
486 | EFX_CHANNEL_STATE_POLL_BIT = 2, | |
487 | EFX_CHANNEL_STATE_POLL = BIT(2), | |
488 | EFX_CHANNEL_STATE_DISABLE_BIT = 3, | |
489 | }; | |
490 | ||
491 | static inline void efx_channel_busy_poll_init(struct efx_channel *channel) | |
36763266 | 492 | { |
c0f9c7e4 | 493 | WRITE_ONCE(channel->busy_poll_state, EFX_CHANNEL_STATE_IDLE); |
36763266 AR |
494 | } |
495 | ||
496 | /* Called from the device poll routine to get ownership of a channel. */ | |
497 | static inline bool efx_channel_lock_napi(struct efx_channel *channel) | |
498 | { | |
c0f9c7e4 BK |
499 | unsigned long prev, old = READ_ONCE(channel->busy_poll_state); |
500 | ||
501 | while (1) { | |
502 | switch (old) { | |
503 | case EFX_CHANNEL_STATE_POLL: | |
504 | /* Ensure efx_channel_try_lock_poll() wont starve us */ | |
505 | set_bit(EFX_CHANNEL_STATE_NAPI_REQ_BIT, | |
506 | &channel->busy_poll_state); | |
507 | /* fallthrough */ | |
508 | case EFX_CHANNEL_STATE_POLL | EFX_CHANNEL_STATE_NAPI_REQ: | |
509 | return false; | |
510 | default: | |
511 | break; | |
512 | } | |
513 | prev = cmpxchg(&channel->busy_poll_state, old, | |
514 | EFX_CHANNEL_STATE_NAPI); | |
515 | if (unlikely(prev != old)) { | |
516 | /* This is likely to mean we've just entered polling | |
517 | * state. Go back round to set the REQ bit. | |
518 | */ | |
519 | old = prev; | |
520 | continue; | |
521 | } | |
522 | return true; | |
36763266 | 523 | } |
36763266 AR |
524 | } |
525 | ||
526 | static inline void efx_channel_unlock_napi(struct efx_channel *channel) | |
527 | { | |
c0f9c7e4 BK |
528 | /* Make sure write has completed from efx_channel_lock_napi() */ |
529 | smp_wmb(); | |
530 | WRITE_ONCE(channel->busy_poll_state, EFX_CHANNEL_STATE_IDLE); | |
36763266 AR |
531 | } |
532 | ||
533 | /* Called from efx_busy_poll(). */ | |
c0f9c7e4 | 534 | static inline bool efx_channel_try_lock_poll(struct efx_channel *channel) |
36763266 | 535 | { |
c0f9c7e4 BK |
536 | return cmpxchg(&channel->busy_poll_state, EFX_CHANNEL_STATE_IDLE, |
537 | EFX_CHANNEL_STATE_POLL) == EFX_CHANNEL_STATE_IDLE; | |
36763266 AR |
538 | } |
539 | ||
36763266 AR |
540 | static inline void efx_channel_unlock_poll(struct efx_channel *channel) |
541 | { | |
c0f9c7e4 | 542 | clear_bit_unlock(EFX_CHANNEL_STATE_POLL_BIT, &channel->busy_poll_state); |
36763266 AR |
543 | } |
544 | ||
36763266 AR |
545 | static inline bool efx_channel_busy_polling(struct efx_channel *channel) |
546 | { | |
c0f9c7e4 | 547 | return test_bit(EFX_CHANNEL_STATE_POLL_BIT, &channel->busy_poll_state); |
36763266 AR |
548 | } |
549 | ||
550 | static inline void efx_channel_enable(struct efx_channel *channel) | |
551 | { | |
c0f9c7e4 BK |
552 | clear_bit_unlock(EFX_CHANNEL_STATE_DISABLE_BIT, |
553 | &channel->busy_poll_state); | |
36763266 AR |
554 | } |
555 | ||
c0f9c7e4 BK |
556 | /* Stop further polling or napi access. |
557 | * Returns false if the channel is currently busy polling. | |
558 | */ | |
36763266 AR |
559 | static inline bool efx_channel_disable(struct efx_channel *channel) |
560 | { | |
c0f9c7e4 BK |
561 | set_bit(EFX_CHANNEL_STATE_DISABLE_BIT, &channel->busy_poll_state); |
562 | /* Implicit barrier in efx_channel_busy_polling() */ | |
563 | return !efx_channel_busy_polling(channel); | |
36763266 AR |
564 | } |
565 | ||
566 | #else /* CONFIG_NET_RX_BUSY_POLL */ | |
567 | ||
c0f9c7e4 | 568 | static inline void efx_channel_busy_poll_init(struct efx_channel *channel) |
36763266 AR |
569 | { |
570 | } | |
571 | ||
572 | static inline bool efx_channel_lock_napi(struct efx_channel *channel) | |
573 | { | |
574 | return true; | |
575 | } | |
576 | ||
577 | static inline void efx_channel_unlock_napi(struct efx_channel *channel) | |
578 | { | |
579 | } | |
580 | ||
c0f9c7e4 | 581 | static inline bool efx_channel_try_lock_poll(struct efx_channel *channel) |
36763266 AR |
582 | { |
583 | return false; | |
584 | } | |
585 | ||
586 | static inline void efx_channel_unlock_poll(struct efx_channel *channel) | |
587 | { | |
588 | } | |
589 | ||
590 | static inline bool efx_channel_busy_polling(struct efx_channel *channel) | |
591 | { | |
592 | return false; | |
593 | } | |
594 | ||
595 | static inline void efx_channel_enable(struct efx_channel *channel) | |
596 | { | |
597 | } | |
598 | ||
599 | static inline bool efx_channel_disable(struct efx_channel *channel) | |
600 | { | |
601 | return true; | |
602 | } | |
603 | #endif /* CONFIG_NET_RX_BUSY_POLL */ | |
604 | ||
d8291187 BH |
605 | /** |
606 | * struct efx_msi_context - Context for each MSI | |
607 | * @efx: The associated NIC | |
608 | * @index: Index of the channel/IRQ | |
609 | * @name: Name of the channel/IRQ | |
610 | * | |
611 | * Unlike &struct efx_channel, this is never reallocated and is always | |
612 | * safe for the IRQ handler to access. | |
613 | */ | |
614 | struct efx_msi_context { | |
615 | struct efx_nic *efx; | |
616 | unsigned int index; | |
617 | char name[IFNAMSIZ + 6]; | |
618 | }; | |
619 | ||
7f967c01 BH |
620 | /** |
621 | * struct efx_channel_type - distinguishes traffic and extra channels | |
622 | * @handle_no_channel: Handle failure to allocate an extra channel | |
623 | * @pre_probe: Set up extra state prior to initialisation | |
624 | * @post_remove: Tear down extra state after finalisation, if allocated. | |
625 | * May be called on channels that have not been probed. | |
626 | * @get_name: Generate the channel's name (used for its IRQ handler) | |
627 | * @copy: Copy the channel state prior to reallocation. May be %NULL if | |
628 | * reallocation is not supported. | |
c31e5f9f | 629 | * @receive_skb: Handle an skb ready to be passed to netif_receive_skb() |
7f967c01 BH |
630 | * @keep_eventq: Flag for whether event queue should be kept initialised |
631 | * while the device is stopped | |
632 | */ | |
633 | struct efx_channel_type { | |
634 | void (*handle_no_channel)(struct efx_nic *); | |
635 | int (*pre_probe)(struct efx_channel *); | |
c31e5f9f | 636 | void (*post_remove)(struct efx_channel *); |
7f967c01 BH |
637 | void (*get_name)(struct efx_channel *, char *buf, size_t len); |
638 | struct efx_channel *(*copy)(const struct efx_channel *); | |
4a74dc65 | 639 | bool (*receive_skb)(struct efx_channel *, struct sk_buff *); |
7f967c01 BH |
640 | bool keep_eventq; |
641 | }; | |
642 | ||
398468ed BH |
643 | enum efx_led_mode { |
644 | EFX_LED_OFF = 0, | |
645 | EFX_LED_ON = 1, | |
646 | EFX_LED_DEFAULT = 2 | |
647 | }; | |
648 | ||
c459302d BH |
649 | #define STRING_TABLE_LOOKUP(val, member) \ |
650 | ((val) < member ## _max) ? member ## _names[val] : "(invalid)" | |
651 | ||
18e83e4c | 652 | extern const char *const efx_loopback_mode_names[]; |
c459302d BH |
653 | extern const unsigned int efx_loopback_mode_max; |
654 | #define LOOPBACK_MODE(efx) \ | |
655 | STRING_TABLE_LOOKUP((efx)->loopback_mode, efx_loopback_mode) | |
656 | ||
18e83e4c | 657 | extern const char *const efx_reset_type_names[]; |
c459302d BH |
658 | extern const unsigned int efx_reset_type_max; |
659 | #define RESET_TYPE(type) \ | |
660 | STRING_TABLE_LOOKUP(type, efx_reset_type) | |
3273c2e8 | 661 | |
8ceee660 BH |
662 | enum efx_int_mode { |
663 | /* Be careful if altering to correct macro below */ | |
664 | EFX_INT_MODE_MSIX = 0, | |
665 | EFX_INT_MODE_MSI = 1, | |
666 | EFX_INT_MODE_LEGACY = 2, | |
667 | EFX_INT_MODE_MAX /* Insert any new items before this */ | |
668 | }; | |
669 | #define EFX_INT_MODE_USE_MSI(x) (((x)->interrupt_mode) <= EFX_INT_MODE_MSI) | |
670 | ||
8ceee660 | 671 | enum nic_state { |
f16aeea0 BH |
672 | STATE_UNINIT = 0, /* device being probed/removed or is frozen */ |
673 | STATE_READY = 1, /* hardware ready and netdev registered */ | |
674 | STATE_DISABLED = 2, /* device disabled due to hardware errors */ | |
626950db | 675 | STATE_RECOVERY = 3, /* device recovering from PCI error */ |
8ceee660 BH |
676 | }; |
677 | ||
8ceee660 BH |
678 | /* Forward declaration */ |
679 | struct efx_nic; | |
680 | ||
681 | /* Pseudo bit-mask flow control field */ | |
b5626946 DM |
682 | #define EFX_FC_RX FLOW_CTRL_RX |
683 | #define EFX_FC_TX FLOW_CTRL_TX | |
684 | #define EFX_FC_AUTO 4 | |
8ceee660 | 685 | |
eb50c0d6 BH |
686 | /** |
687 | * struct efx_link_state - Current state of the link | |
688 | * @up: Link is up | |
689 | * @fd: Link is full-duplex | |
690 | * @fc: Actual flow control flags | |
691 | * @speed: Link speed (Mbps) | |
692 | */ | |
693 | struct efx_link_state { | |
694 | bool up; | |
695 | bool fd; | |
b5626946 | 696 | u8 fc; |
eb50c0d6 BH |
697 | unsigned int speed; |
698 | }; | |
699 | ||
fdaa9aed SH |
700 | static inline bool efx_link_state_equal(const struct efx_link_state *left, |
701 | const struct efx_link_state *right) | |
702 | { | |
703 | return left->up == right->up && left->fd == right->fd && | |
704 | left->fc == right->fc && left->speed == right->speed; | |
705 | } | |
706 | ||
8ceee660 BH |
707 | /** |
708 | * struct efx_phy_operations - Efx PHY operations table | |
c1c4f453 BH |
709 | * @probe: Probe PHY and initialise efx->mdio.mode_support, efx->mdio.mmds, |
710 | * efx->loopback_modes. | |
8ceee660 BH |
711 | * @init: Initialise PHY |
712 | * @fini: Shut down PHY | |
713 | * @reconfigure: Reconfigure PHY (e.g. for new link parameters) | |
fdaa9aed SH |
714 | * @poll: Update @link_state and report whether it changed. |
715 | * Serialised by the mac_lock. | |
177dfcd8 BH |
716 | * @get_settings: Get ethtool settings. Serialised by the mac_lock. |
717 | * @set_settings: Set ethtool settings. Serialised by the mac_lock. | |
af4ad9bc | 718 | * @set_npage_adv: Set abilities advertised in (Extended) Next Page |
04cc8cac | 719 | * (only needed where AN bit is set in mmds) |
4f16c073 | 720 | * @test_alive: Test that PHY is 'alive' (online) |
c1c4f453 | 721 | * @test_name: Get the name of a PHY-specific test/result |
4f16c073 | 722 | * @run_tests: Run tests and record results as appropriate (offline). |
1796721a | 723 | * Flags are the ethtool tests flags. |
8ceee660 BH |
724 | */ |
725 | struct efx_phy_operations { | |
c1c4f453 | 726 | int (*probe) (struct efx_nic *efx); |
8ceee660 BH |
727 | int (*init) (struct efx_nic *efx); |
728 | void (*fini) (struct efx_nic *efx); | |
ff3b00a0 | 729 | void (*remove) (struct efx_nic *efx); |
d3245b28 | 730 | int (*reconfigure) (struct efx_nic *efx); |
fdaa9aed | 731 | bool (*poll) (struct efx_nic *efx); |
177dfcd8 BH |
732 | void (*get_settings) (struct efx_nic *efx, |
733 | struct ethtool_cmd *ecmd); | |
734 | int (*set_settings) (struct efx_nic *efx, | |
735 | struct ethtool_cmd *ecmd); | |
af4ad9bc | 736 | void (*set_npage_adv) (struct efx_nic *efx, u32); |
4f16c073 | 737 | int (*test_alive) (struct efx_nic *efx); |
c1c4f453 | 738 | const char *(*test_name) (struct efx_nic *efx, unsigned int index); |
1796721a | 739 | int (*run_tests) (struct efx_nic *efx, int *results, unsigned flags); |
c087bd2c SH |
740 | int (*get_module_eeprom) (struct efx_nic *efx, |
741 | struct ethtool_eeprom *ee, | |
742 | u8 *data); | |
743 | int (*get_module_info) (struct efx_nic *efx, | |
744 | struct ethtool_modinfo *modinfo); | |
8ceee660 BH |
745 | }; |
746 | ||
f8b87c17 | 747 | /** |
49ce9c2c | 748 | * enum efx_phy_mode - PHY operating mode flags |
f8b87c17 BH |
749 | * @PHY_MODE_NORMAL: on and should pass traffic |
750 | * @PHY_MODE_TX_DISABLED: on with TX disabled | |
3e133c44 BH |
751 | * @PHY_MODE_LOW_POWER: set to low power through MDIO |
752 | * @PHY_MODE_OFF: switched off through external control | |
f8b87c17 BH |
753 | * @PHY_MODE_SPECIAL: on but will not pass traffic |
754 | */ | |
755 | enum efx_phy_mode { | |
756 | PHY_MODE_NORMAL = 0, | |
757 | PHY_MODE_TX_DISABLED = 1, | |
3e133c44 BH |
758 | PHY_MODE_LOW_POWER = 2, |
759 | PHY_MODE_OFF = 4, | |
f8b87c17 BH |
760 | PHY_MODE_SPECIAL = 8, |
761 | }; | |
762 | ||
763 | static inline bool efx_phy_mode_disabled(enum efx_phy_mode mode) | |
764 | { | |
8c8661e4 | 765 | return !!(mode & ~PHY_MODE_TX_DISABLED); |
f8b87c17 BH |
766 | } |
767 | ||
cd0ecc9a BH |
768 | /** |
769 | * struct efx_hw_stat_desc - Description of a hardware statistic | |
770 | * @name: Name of the statistic as visible through ethtool, or %NULL if | |
771 | * it should not be exposed | |
772 | * @dma_width: Width in bits (0 for non-DMA statistics) | |
773 | * @offset: Offset within stats (ignored for non-DMA statistics) | |
8ceee660 | 774 | */ |
cd0ecc9a BH |
775 | struct efx_hw_stat_desc { |
776 | const char *name; | |
777 | u16 dma_width; | |
778 | u16 offset; | |
8ceee660 BH |
779 | }; |
780 | ||
781 | /* Number of bits used in a multicast filter hash address */ | |
782 | #define EFX_MCAST_HASH_BITS 8 | |
783 | ||
784 | /* Number of (single-bit) entries in a multicast filter hash */ | |
785 | #define EFX_MCAST_HASH_ENTRIES (1 << EFX_MCAST_HASH_BITS) | |
786 | ||
787 | /* An Efx multicast filter hash */ | |
788 | union efx_multicast_hash { | |
789 | u8 byte[EFX_MCAST_HASH_ENTRIES / 8]; | |
790 | efx_oword_t oword[EFX_MCAST_HASH_ENTRIES / sizeof(efx_oword_t) / 8]; | |
791 | }; | |
792 | ||
cd2d5b52 | 793 | struct vfdi_status; |
64eebcfd | 794 | |
8ceee660 BH |
795 | /** |
796 | * struct efx_nic - an Efx NIC | |
797 | * @name: Device name (net device name or bus id before net device registered) | |
798 | * @pci_dev: The PCI device | |
0bcf4a64 BH |
799 | * @node: List node for maintaning primary/secondary function lists |
800 | * @primary: &struct efx_nic instance for the primary function of this | |
801 | * controller. May be the same structure, and may be %NULL if no | |
802 | * primary function is bound. Serialised by rtnl_lock. | |
803 | * @secondary_list: List of &struct efx_nic instances for the secondary PCI | |
804 | * functions of the controller, if this is for the primary function. | |
805 | * Serialised by rtnl_lock. | |
8ceee660 BH |
806 | * @type: Controller type attributes |
807 | * @legacy_irq: IRQ number | |
8d9853d9 BH |
808 | * @workqueue: Workqueue for port reconfigures and the HW monitor. |
809 | * Work items do not hold and must not acquire RTNL. | |
6977dc63 | 810 | * @workqueue_name: Name of workqueue |
8ceee660 | 811 | * @reset_work: Scheduled reset workitem |
8ceee660 BH |
812 | * @membase_phys: Memory BAR value as physical address |
813 | * @membase: Memory BAR value | |
8ceee660 | 814 | * @interrupt_mode: Interrupt mode |
cc180b69 | 815 | * @timer_quantum_ns: Interrupt timer quantum, in nanoseconds |
d95e329a | 816 | * @timer_max_ns: Interrupt timer maximum value, in nanoseconds |
6fb70fd1 | 817 | * @irq_rx_adaptive: Adaptive IRQ moderation enabled for RX event queues |
539de7c5 BK |
818 | * @irq_rx_mod_step_us: Step size for IRQ moderation for RX event queues |
819 | * @irq_rx_moderation_us: IRQ moderation time for RX event queues | |
62776d03 | 820 | * @msg_enable: Log message enable flags |
f16aeea0 | 821 | * @state: Device state number (%STATE_*). Serialised by the rtnl_lock. |
a7d529ae | 822 | * @reset_pending: Bitmask for pending resets |
8ceee660 BH |
823 | * @tx_queue: TX DMA queues |
824 | * @rx_queue: RX DMA queues | |
825 | * @channel: Channels | |
d8291187 | 826 | * @msi_context: Context for each MSI |
7f967c01 BH |
827 | * @extra_channel_types: Types of extra (non-traffic) channels that |
828 | * should be allocated for this NIC | |
ecc910f5 SH |
829 | * @rxq_entries: Size of receive queues requested by user. |
830 | * @txq_entries: Size of transmit queues requested by user. | |
14bf718f BH |
831 | * @txq_stop_thresh: TX queue fill level at or above which we stop it. |
832 | * @txq_wake_thresh: TX queue fill level at or below which we wake it. | |
28e47c49 BH |
833 | * @tx_dc_base: Base qword address in SRAM of TX queue descriptor caches |
834 | * @rx_dc_base: Base qword address in SRAM of RX queue descriptor caches | |
835 | * @sram_lim_qw: Qword address limit of SRAM | |
0484e0db | 836 | * @next_buffer_table: First available buffer table id |
28b581ab | 837 | * @n_channels: Number of channels in use |
a4900ac9 BH |
838 | * @n_rx_channels: Number of channels used for RX (= number of RX queues) |
839 | * @n_tx_channels: Number of channels used for TX | |
2ec03014 AR |
840 | * @rx_ip_align: RX DMA address offset to have IP header aligned in |
841 | * in accordance with NET_IP_ALIGN | |
272baeeb | 842 | * @rx_dma_len: Current maximum RX DMA length |
8ceee660 | 843 | * @rx_buffer_order: Order (log2) of number of pages for each RX buffer |
85740cdf BH |
844 | * @rx_buffer_truesize: Amortised allocation size of an RX buffer, |
845 | * for use in sk_buff::truesize | |
43a3739d JC |
846 | * @rx_prefix_size: Size of RX prefix before packet data |
847 | * @rx_packet_hash_offset: Offset of RX flow hash from start of packet data | |
848 | * (valid only if @rx_prefix_size != 0; always negative) | |
3dced740 BH |
849 | * @rx_packet_len_offset: Offset of RX packet length from start of packet data |
850 | * (valid only for NICs that set %EFX_RX_PKT_PREFIX_LEN; always negative) | |
bd9a265d JC |
851 | * @rx_packet_ts_offset: Offset of timestamp from start of packet data |
852 | * (valid only if channel->sync_timestamps_enabled; always negative) | |
78d4189d | 853 | * @rx_hash_key: Toeplitz hash key for RSS |
765c9f46 | 854 | * @rx_indir_table: Indirection table for RSS |
85740cdf | 855 | * @rx_scatter: Scatter mode enabled for receives |
b718c88a | 856 | * @rx_hash_udp_4tuple: UDP 4-tuple hashing enabled |
0484e0db BH |
857 | * @int_error_count: Number of internal errors seen recently |
858 | * @int_error_expire: Time at which error count will be expired | |
d8291187 BH |
859 | * @irq_soft_enabled: Are IRQs soft-enabled? If not, IRQ handler will |
860 | * acknowledge but do nothing else. | |
8ceee660 | 861 | * @irq_status: Interrupt status buffer |
c28884c5 | 862 | * @irq_zero_count: Number of legacy IRQs seen with queue flags == 0 |
1646a6f3 | 863 | * @irq_level: IRQ level/index for IRQs not triggered by an event queue |
dd40781e | 864 | * @selftest_work: Work item for asynchronous self-test |
76884835 | 865 | * @mtd_list: List of MTDs attached to the NIC |
25985edc | 866 | * @nic_data: Hardware dependent state |
f3ad5003 | 867 | * @mcdi: Management-Controller-to-Driver Interface state |
8c8661e4 | 868 | * @mac_lock: MAC access lock. Protects @port_enabled, @phy_mode, |
e4abce85 | 869 | * efx_monitor() and efx_reconfigure_port() |
8ceee660 | 870 | * @port_enabled: Port enabled indicator. |
fdaa9aed SH |
871 | * Serialises efx_stop_all(), efx_start_all(), efx_monitor() and |
872 | * efx_mac_work() with kernel interfaces. Safe to read under any | |
873 | * one of the rtnl_lock, mac_lock, or netif_tx_lock, but all three must | |
874 | * be held to modify it. | |
8ceee660 BH |
875 | * @port_initialized: Port initialized? |
876 | * @net_dev: Operating system network device. Consider holding the rtnl lock | |
ebfcd0fd | 877 | * @fixed_features: Features which cannot be turned off |
8ceee660 | 878 | * @stats_buffer: DMA buffer for statistics |
8ceee660 | 879 | * @phy_type: PHY type |
8ceee660 BH |
880 | * @phy_op: PHY interface |
881 | * @phy_data: PHY private data (including PHY-specific stats) | |
68e7f45e | 882 | * @mdio: PHY MDIO interface |
8880f4ec | 883 | * @mdio_bus: PHY MDIO bus ID (only used by Siena) |
8c8661e4 | 884 | * @phy_mode: PHY operating mode. Serialised by @mac_lock. |
d3245b28 | 885 | * @link_advertising: Autonegotiation advertising flags |
eb50c0d6 | 886 | * @link_state: Current state of the link |
8ceee660 | 887 | * @n_link_state_changes: Number of times the link has changed state |
964e6135 BH |
888 | * @unicast_filter: Flag for Falcon-arch simple unicast filter. |
889 | * Protected by @mac_lock. | |
890 | * @multicast_hash: Multicast hash table for Falcon-arch. | |
891 | * Protected by @mac_lock. | |
04cc8cac | 892 | * @wanted_fc: Wanted flow control flags |
a606f432 SH |
893 | * @fc_disable: When non-zero flow control is disabled. Typically used to |
894 | * ensure that network back pressure doesn't delay dma queue flushes. | |
895 | * Serialised by the rtnl lock. | |
8be4f3e6 | 896 | * @mac_work: Work item for changing MAC promiscuity and multicast hash |
3273c2e8 BH |
897 | * @loopback_mode: Loopback status |
898 | * @loopback_modes: Supported loopback mode bitmask | |
899 | * @loopback_selftest: Offline self-test private state | |
0d322413 EC |
900 | * @filter_sem: Filter table rw_semaphore, for freeing the table |
901 | * @filter_lock: Filter table lock, for mere content changes | |
6d661cec | 902 | * @filter_state: Architecture-dependent filter table state |
faf8dcc1 JC |
903 | * @rps_expire_channel: Next channel to check for expiry |
904 | * @rps_expire_index: Next index to check for expiry in | |
905 | * @rps_expire_channel's @rps_flow_id | |
3881d8ab | 906 | * @active_queues: Count of RX and TX queues that haven't been flushed and drained. |
9f2cb71c BH |
907 | * @rxq_flush_pending: Count of number of receive queues that need to be flushed. |
908 | * Decremented when the efx_flush_rx_queue() is called. | |
909 | * @rxq_flush_outstanding: Count of number of RX flushes started but not yet | |
910 | * completed (either success or failure). Not used when MCDI is used to | |
911 | * flush receive queues. | |
912 | * @flush_wq: wait queue used by efx_nic_flush_queues() to wait for flush completions. | |
cd2d5b52 BH |
913 | * @vf_count: Number of VFs intended to be enabled. |
914 | * @vf_init_count: Number of VFs that have been fully initialised. | |
915 | * @vi_scale: log2 number of vnics per VF. | |
7c236c43 | 916 | * @ptp_data: PTP state data |
ef215e64 | 917 | * @vpd_sn: Serial number read from VPD |
ab28c12a BH |
918 | * @monitor_work: Hardware monitor workitem |
919 | * @biu_lock: BIU (bus interface unit) lock | |
1646a6f3 BH |
920 | * @last_irq_cpu: Last CPU to handle a possible test interrupt. This |
921 | * field is used by efx_test_interrupts() to verify that an | |
922 | * interrupt has occurred. | |
cd0ecc9a BH |
923 | * @stats_lock: Statistics update lock. Must be held when calling |
924 | * efx_nic_type::{update,start,stop}_stats. | |
e4d112e4 | 925 | * @n_rx_noskb_drops: Count of RX packets dropped due to failure to allocate an skb |
8ceee660 | 926 | * |
754c653a | 927 | * This is stored in the private area of the &struct net_device. |
8ceee660 BH |
928 | */ |
929 | struct efx_nic { | |
ab28c12a BH |
930 | /* The following fields should be written very rarely */ |
931 | ||
8ceee660 | 932 | char name[IFNAMSIZ]; |
0bcf4a64 BH |
933 | struct list_head node; |
934 | struct efx_nic *primary; | |
935 | struct list_head secondary_list; | |
8ceee660 | 936 | struct pci_dev *pci_dev; |
6602041b | 937 | unsigned int port_num; |
8ceee660 BH |
938 | const struct efx_nic_type *type; |
939 | int legacy_irq; | |
b28405b0 | 940 | bool eeh_disabled_legacy_irq; |
8ceee660 | 941 | struct workqueue_struct *workqueue; |
6977dc63 | 942 | char workqueue_name[16]; |
8ceee660 | 943 | struct work_struct reset_work; |
086ea356 | 944 | resource_size_t membase_phys; |
8ceee660 | 945 | void __iomem *membase; |
ab28c12a | 946 | |
8ceee660 | 947 | enum efx_int_mode interrupt_mode; |
cc180b69 | 948 | unsigned int timer_quantum_ns; |
d95e329a | 949 | unsigned int timer_max_ns; |
6fb70fd1 | 950 | bool irq_rx_adaptive; |
539de7c5 BK |
951 | unsigned int irq_mod_step_us; |
952 | unsigned int irq_rx_moderation_us; | |
62776d03 | 953 | u32 msg_enable; |
8ceee660 | 954 | |
8ceee660 | 955 | enum nic_state state; |
a7d529ae | 956 | unsigned long reset_pending; |
8ceee660 | 957 | |
8313aca3 | 958 | struct efx_channel *channel[EFX_MAX_CHANNELS]; |
d8291187 | 959 | struct efx_msi_context msi_context[EFX_MAX_CHANNELS]; |
7f967c01 BH |
960 | const struct efx_channel_type * |
961 | extra_channel_type[EFX_MAX_EXTRA_CHANNELS]; | |
8ceee660 | 962 | |
ecc910f5 SH |
963 | unsigned rxq_entries; |
964 | unsigned txq_entries; | |
14bf718f BH |
965 | unsigned int txq_stop_thresh; |
966 | unsigned int txq_wake_thresh; | |
967 | ||
28e47c49 BH |
968 | unsigned tx_dc_base; |
969 | unsigned rx_dc_base; | |
970 | unsigned sram_lim_qw; | |
0484e0db | 971 | unsigned next_buffer_table; |
b105798f BH |
972 | |
973 | unsigned int max_channels; | |
b0fbdae1 | 974 | unsigned int max_tx_channels; |
a4900ac9 BH |
975 | unsigned n_channels; |
976 | unsigned n_rx_channels; | |
cd2d5b52 | 977 | unsigned rss_spread; |
97653431 | 978 | unsigned tx_channel_offset; |
a4900ac9 | 979 | unsigned n_tx_channels; |
2ec03014 | 980 | unsigned int rx_ip_align; |
272baeeb | 981 | unsigned int rx_dma_len; |
8ceee660 | 982 | unsigned int rx_buffer_order; |
85740cdf | 983 | unsigned int rx_buffer_truesize; |
1648a23f | 984 | unsigned int rx_page_buf_step; |
2768935a | 985 | unsigned int rx_bufs_per_page; |
1648a23f | 986 | unsigned int rx_pages_per_batch; |
43a3739d JC |
987 | unsigned int rx_prefix_size; |
988 | int rx_packet_hash_offset; | |
3dced740 | 989 | int rx_packet_len_offset; |
bd9a265d | 990 | int rx_packet_ts_offset; |
5d3a6fca | 991 | u8 rx_hash_key[40]; |
765c9f46 | 992 | u32 rx_indir_table[128]; |
85740cdf | 993 | bool rx_scatter; |
b718c88a | 994 | bool rx_hash_udp_4tuple; |
8ceee660 | 995 | |
0484e0db BH |
996 | unsigned int_error_count; |
997 | unsigned long int_error_expire; | |
998 | ||
d8291187 | 999 | bool irq_soft_enabled; |
8ceee660 | 1000 | struct efx_buffer irq_status; |
c28884c5 | 1001 | unsigned irq_zero_count; |
1646a6f3 | 1002 | unsigned irq_level; |
dd40781e | 1003 | struct delayed_work selftest_work; |
8ceee660 | 1004 | |
76884835 BH |
1005 | #ifdef CONFIG_SFC_MTD |
1006 | struct list_head mtd_list; | |
1007 | #endif | |
4a5b504d | 1008 | |
8880f4ec | 1009 | void *nic_data; |
f3ad5003 | 1010 | struct efx_mcdi_data *mcdi; |
8ceee660 BH |
1011 | |
1012 | struct mutex mac_lock; | |
766ca0fa | 1013 | struct work_struct mac_work; |
dc8cfa55 | 1014 | bool port_enabled; |
8ceee660 | 1015 | |
74cd60a4 | 1016 | bool mc_bist_for_other_fn; |
dc8cfa55 | 1017 | bool port_initialized; |
8ceee660 | 1018 | struct net_device *net_dev; |
8ceee660 | 1019 | |
ebfcd0fd AR |
1020 | netdev_features_t fixed_features; |
1021 | ||
8ceee660 | 1022 | struct efx_buffer stats_buffer; |
f8f3b5ae JC |
1023 | u64 rx_nodesc_drops_total; |
1024 | u64 rx_nodesc_drops_while_down; | |
1025 | bool rx_nodesc_drops_prev_state; | |
8ceee660 | 1026 | |
c1c4f453 | 1027 | unsigned int phy_type; |
6c8c2513 | 1028 | const struct efx_phy_operations *phy_op; |
8ceee660 | 1029 | void *phy_data; |
68e7f45e | 1030 | struct mdio_if_info mdio; |
8880f4ec | 1031 | unsigned int mdio_bus; |
f8b87c17 | 1032 | enum efx_phy_mode phy_mode; |
8ceee660 | 1033 | |
d3245b28 | 1034 | u32 link_advertising; |
eb50c0d6 | 1035 | struct efx_link_state link_state; |
8ceee660 BH |
1036 | unsigned int n_link_state_changes; |
1037 | ||
964e6135 | 1038 | bool unicast_filter; |
8ceee660 | 1039 | union efx_multicast_hash multicast_hash; |
b5626946 | 1040 | u8 wanted_fc; |
a606f432 | 1041 | unsigned fc_disable; |
8ceee660 BH |
1042 | |
1043 | atomic_t rx_reset; | |
3273c2e8 | 1044 | enum efx_loopback_mode loopback_mode; |
e58f69f4 | 1045 | u64 loopback_modes; |
3273c2e8 BH |
1046 | |
1047 | void *loopback_selftest; | |
64eebcfd | 1048 | |
0d322413 | 1049 | struct rw_semaphore filter_sem; |
6d661cec BH |
1050 | spinlock_t filter_lock; |
1051 | void *filter_state; | |
1052 | #ifdef CONFIG_RFS_ACCEL | |
faf8dcc1 | 1053 | unsigned int rps_expire_channel; |
6d661cec BH |
1054 | unsigned int rps_expire_index; |
1055 | #endif | |
ab28c12a | 1056 | |
3881d8ab | 1057 | atomic_t active_queues; |
9f2cb71c BH |
1058 | atomic_t rxq_flush_pending; |
1059 | atomic_t rxq_flush_outstanding; | |
1060 | wait_queue_head_t flush_wq; | |
1061 | ||
cd2d5b52 | 1062 | #ifdef CONFIG_SFC_SRIOV |
cd2d5b52 BH |
1063 | unsigned vf_count; |
1064 | unsigned vf_init_count; | |
1065 | unsigned vi_scale; | |
cd2d5b52 BH |
1066 | #endif |
1067 | ||
7c236c43 | 1068 | struct efx_ptp_data *ptp_data; |
7c236c43 | 1069 | |
ef215e64 BH |
1070 | char *vpd_sn; |
1071 | ||
ab28c12a BH |
1072 | /* The following fields may be written more often */ |
1073 | ||
1074 | struct delayed_work monitor_work ____cacheline_aligned_in_smp; | |
1075 | spinlock_t biu_lock; | |
1646a6f3 | 1076 | int last_irq_cpu; |
ab28c12a | 1077 | spinlock_t stats_lock; |
e4d112e4 | 1078 | atomic_t n_rx_noskb_drops; |
8ceee660 BH |
1079 | }; |
1080 | ||
55668611 BH |
1081 | static inline int efx_dev_registered(struct efx_nic *efx) |
1082 | { | |
1083 | return efx->net_dev->reg_state == NETREG_REGISTERED; | |
1084 | } | |
1085 | ||
8880f4ec BH |
1086 | static inline unsigned int efx_port_num(struct efx_nic *efx) |
1087 | { | |
6602041b | 1088 | return efx->port_num; |
8880f4ec BH |
1089 | } |
1090 | ||
45a3fd55 BH |
1091 | struct efx_mtd_partition { |
1092 | struct list_head node; | |
1093 | struct mtd_info mtd; | |
1094 | const char *dev_type_name; | |
1095 | const char *type_name; | |
1096 | char name[IFNAMSIZ + 20]; | |
1097 | }; | |
1098 | ||
8ceee660 BH |
1099 | /** |
1100 | * struct efx_nic_type - Efx device type definition | |
02246a7f | 1101 | * @mem_bar: Get the memory BAR |
b105798f | 1102 | * @mem_map_size: Get memory BAR mapped size |
ef2b90ee BH |
1103 | * @probe: Probe the controller |
1104 | * @remove: Free resources allocated by probe() | |
1105 | * @init: Initialise the controller | |
28e47c49 BH |
1106 | * @dimension_resources: Dimension controller resources (buffer table, |
1107 | * and VIs once the available interrupt resources are clear) | |
ef2b90ee BH |
1108 | * @fini: Shut down the controller |
1109 | * @monitor: Periodic function for polling link state and hardware monitor | |
0e2a9c7c BH |
1110 | * @map_reset_reason: Map ethtool reset reason to a reset method |
1111 | * @map_reset_flags: Map ethtool reset flags to a reset method, if possible | |
ef2b90ee BH |
1112 | * @reset: Reset the controller hardware and possibly the PHY. This will |
1113 | * be called while the controller is uninitialised. | |
1114 | * @probe_port: Probe the MAC and PHY | |
1115 | * @remove_port: Free resources allocated by probe_port() | |
40641ed9 | 1116 | * @handle_global_event: Handle a "global" event (may be %NULL) |
e42c3d85 | 1117 | * @fini_dmaq: Flush and finalise DMA queues (RX and TX queues) |
ef2b90ee | 1118 | * @prepare_flush: Prepare the hardware for flushing the DMA queues |
e42c3d85 BH |
1119 | * (for Falcon architecture) |
1120 | * @finish_flush: Clean up after flushing the DMA queues (for Falcon | |
1121 | * architecture) | |
e283546c EC |
1122 | * @prepare_flr: Prepare for an FLR |
1123 | * @finish_flr: Clean up after an FLR | |
cd0ecc9a BH |
1124 | * @describe_stats: Describe statistics for ethtool |
1125 | * @update_stats: Update statistics not provided by event handling. | |
1126 | * Either argument may be %NULL. | |
ef2b90ee | 1127 | * @start_stats: Start the regular fetching of statistics |
f8f3b5ae | 1128 | * @pull_stats: Pull stats from the NIC and wait until they arrive. |
ef2b90ee | 1129 | * @stop_stats: Stop the regular fetching of statistics |
06629f07 | 1130 | * @set_id_led: Set state of identifying LED or revert to automatic function |
ef2b90ee | 1131 | * @push_irq_moderation: Apply interrupt moderation value |
d3245b28 | 1132 | * @reconfigure_port: Push loopback/power/txdis changes to the MAC and PHY |
9dd3a13b | 1133 | * @prepare_enable_fc_tx: Prepare MAC to enable pause frame TX (may be %NULL) |
30b81cda BH |
1134 | * @reconfigure_mac: Push MAC address, MTU, flow control and filter settings |
1135 | * to the hardware. Serialised by the mac_lock. | |
710b208d | 1136 | * @check_mac_fault: Check MAC fault state. True if fault present. |
89c758fa BH |
1137 | * @get_wol: Get WoL configuration from driver state |
1138 | * @set_wol: Push WoL configuration to the NIC | |
1139 | * @resume_wol: Synchronise WoL state between driver and MC (e.g. after resume) | |
86094f7f | 1140 | * @test_chip: Test registers. May use efx_farch_test_registers(), and is |
d4f2cecc | 1141 | * expected to reset the NIC. |
0aa3fbaa | 1142 | * @test_nvram: Test validity of NVRAM contents |
f3ad5003 BH |
1143 | * @mcdi_request: Send an MCDI request with the given header and SDU. |
1144 | * The SDU length may be any value from 0 up to the protocol- | |
1145 | * defined maximum, but its buffer will be padded to a multiple | |
1146 | * of 4 bytes. | |
1147 | * @mcdi_poll_response: Test whether an MCDI response is available. | |
1148 | * @mcdi_read_response: Read the MCDI response PDU. The offset will | |
1149 | * be a multiple of 4. The length may not be, but the buffer | |
1150 | * will be padded so it is safe to round up. | |
1151 | * @mcdi_poll_reboot: Test whether the MCDI has rebooted. If so, | |
1152 | * return an appropriate error code for aborting any current | |
1153 | * request; otherwise return 0. | |
86094f7f BH |
1154 | * @irq_enable_master: Enable IRQs on the NIC. Each event queue must |
1155 | * be separately enabled after this. | |
1156 | * @irq_test_generate: Generate a test IRQ | |
1157 | * @irq_disable_non_ev: Disable non-event IRQs on the NIC. Each event | |
1158 | * queue must be separately disabled before this. | |
1159 | * @irq_handle_msi: Handle MSI for a channel. The @dev_id argument is | |
1160 | * a pointer to the &struct efx_msi_context for the channel. | |
1161 | * @irq_handle_legacy: Handle legacy interrupt. The @dev_id argument | |
1162 | * is a pointer to the &struct efx_nic. | |
1163 | * @tx_probe: Allocate resources for TX queue | |
1164 | * @tx_init: Initialise TX queue on the NIC | |
1165 | * @tx_remove: Free resources for TX queue | |
1166 | * @tx_write: Write TX descriptors and doorbell | |
d43050c0 | 1167 | * @rx_push_rss_config: Write RSS hash key and indirection table to the NIC |
86094f7f BH |
1168 | * @rx_probe: Allocate resources for RX queue |
1169 | * @rx_init: Initialise RX queue on the NIC | |
1170 | * @rx_remove: Free resources for RX queue | |
1171 | * @rx_write: Write RX descriptors and doorbell | |
1172 | * @rx_defer_refill: Generate a refill reminder event | |
1173 | * @ev_probe: Allocate resources for event queue | |
1174 | * @ev_init: Initialise event queue on the NIC | |
1175 | * @ev_fini: Deinitialise event queue on the NIC | |
1176 | * @ev_remove: Free resources for event queue | |
1177 | * @ev_process: Process events for a queue, up to the given NAPI quota | |
1178 | * @ev_read_ack: Acknowledge read events on a queue, rearming its IRQ | |
1179 | * @ev_test_generate: Generate a test event | |
add72477 BH |
1180 | * @filter_table_probe: Probe filter capabilities and set up filter software state |
1181 | * @filter_table_restore: Restore filters removed from hardware | |
1182 | * @filter_table_remove: Remove filters from hardware and tear down software state | |
1183 | * @filter_update_rx_scatter: Update filters after change to rx scatter setting | |
1184 | * @filter_insert: add or replace a filter | |
1185 | * @filter_remove_safe: remove a filter by ID, carefully | |
1186 | * @filter_get_safe: retrieve a filter by ID, carefully | |
fbd79120 BH |
1187 | * @filter_clear_rx: Remove all RX filters whose priority is less than or |
1188 | * equal to the given priority and is not %EFX_FILTER_PRI_AUTO | |
add72477 BH |
1189 | * @filter_count_rx_used: Get the number of filters in use at a given priority |
1190 | * @filter_get_rx_id_limit: Get maximum value of a filter id, plus 1 | |
1191 | * @filter_get_rx_ids: Get list of RX filters at a given priority | |
1192 | * @filter_rfs_insert: Add or replace a filter for RFS. This must be | |
1193 | * atomic. The hardware change may be asynchronous but should | |
1194 | * not be delayed for long. It may fail if this can't be done | |
1195 | * atomically. | |
1196 | * @filter_rfs_expire_one: Consider expiring a filter inserted for RFS. | |
1197 | * This must check whether the specified table entry is used by RFS | |
1198 | * and that rps_may_expire_flow() returns true for it. | |
45a3fd55 BH |
1199 | * @mtd_probe: Probe and add MTD partitions associated with this net device, |
1200 | * using efx_mtd_add() | |
1201 | * @mtd_rename: Set an MTD partition name using the net device name | |
1202 | * @mtd_read: Read from an MTD partition | |
1203 | * @mtd_erase: Erase part of an MTD partition | |
1204 | * @mtd_write: Write to an MTD partition | |
1205 | * @mtd_sync: Wait for write-back to complete on MTD partition. This | |
1206 | * also notifies the driver that a writer has finished using this | |
1207 | * partition. | |
9ec06595 | 1208 | * @ptp_write_host_time: Send host time to MC as part of sync protocol |
bd9a265d JC |
1209 | * @ptp_set_ts_sync_events: Enable or disable sync events for inline RX |
1210 | * timestamping, possibly only temporarily for the purposes of a reset. | |
9ec06595 DP |
1211 | * @ptp_set_ts_config: Set hardware timestamp configuration. The flags |
1212 | * and tx_type will already have been validated but this operation | |
1213 | * must validate and update rx_filter. | |
910c8789 | 1214 | * @set_mac_address: Set the MAC address of the device |
daeda630 | 1215 | * @revision: Hardware architecture revision |
8ceee660 BH |
1216 | * @txd_ptr_tbl_base: TX descriptor ring base address |
1217 | * @rxd_ptr_tbl_base: RX descriptor ring base address | |
1218 | * @buf_tbl_base: Buffer table base address | |
1219 | * @evq_ptr_tbl_base: Event queue pointer table base address | |
1220 | * @evq_rptr_tbl_base: Event queue read-pointer table base address | |
8ceee660 | 1221 | * @max_dma_mask: Maximum possible DMA mask |
43a3739d JC |
1222 | * @rx_prefix_size: Size of RX prefix before packet data |
1223 | * @rx_hash_offset: Offset of RX flow hash within prefix | |
bd9a265d | 1224 | * @rx_ts_offset: Offset of timestamp within prefix |
85740cdf | 1225 | * @rx_buffer_padding: Size of padding at end of RX packet |
e8c68c0a JC |
1226 | * @can_rx_scatter: NIC is able to scatter packets to multiple buffers |
1227 | * @always_rx_scatter: NIC will always scatter packets to multiple buffers | |
8ceee660 BH |
1228 | * @max_interrupt_mode: Highest capability interrupt mode supported |
1229 | * from &enum efx_init_mode. | |
cc180b69 | 1230 | * @timer_period_max: Maximum period of interrupt timer (in ticks) |
c383b537 BH |
1231 | * @offload_features: net_device feature flags for protocol offload |
1232 | * features implemented in hardware | |
df2cd8af | 1233 | * @mcdi_max_ver: Maximum MCDI version supported |
9ec06595 | 1234 | * @hwtstamp_filters: Mask of hardware timestamp filter types supported |
8ceee660 BH |
1235 | */ |
1236 | struct efx_nic_type { | |
6f7f8aa6 | 1237 | bool is_vf; |
02246a7f | 1238 | unsigned int mem_bar; |
b105798f | 1239 | unsigned int (*mem_map_size)(struct efx_nic *efx); |
ef2b90ee BH |
1240 | int (*probe)(struct efx_nic *efx); |
1241 | void (*remove)(struct efx_nic *efx); | |
1242 | int (*init)(struct efx_nic *efx); | |
c15eed22 | 1243 | int (*dimension_resources)(struct efx_nic *efx); |
ef2b90ee BH |
1244 | void (*fini)(struct efx_nic *efx); |
1245 | void (*monitor)(struct efx_nic *efx); | |
0e2a9c7c BH |
1246 | enum reset_type (*map_reset_reason)(enum reset_type reason); |
1247 | int (*map_reset_flags)(u32 *flags); | |
ef2b90ee BH |
1248 | int (*reset)(struct efx_nic *efx, enum reset_type method); |
1249 | int (*probe_port)(struct efx_nic *efx); | |
1250 | void (*remove_port)(struct efx_nic *efx); | |
40641ed9 | 1251 | bool (*handle_global_event)(struct efx_channel *channel, efx_qword_t *); |
e42c3d85 | 1252 | int (*fini_dmaq)(struct efx_nic *efx); |
ef2b90ee | 1253 | void (*prepare_flush)(struct efx_nic *efx); |
d5e8cc6c | 1254 | void (*finish_flush)(struct efx_nic *efx); |
e283546c EC |
1255 | void (*prepare_flr)(struct efx_nic *efx); |
1256 | void (*finish_flr)(struct efx_nic *efx); | |
cd0ecc9a BH |
1257 | size_t (*describe_stats)(struct efx_nic *efx, u8 *names); |
1258 | size_t (*update_stats)(struct efx_nic *efx, u64 *full_stats, | |
1259 | struct rtnl_link_stats64 *core_stats); | |
ef2b90ee | 1260 | void (*start_stats)(struct efx_nic *efx); |
f8f3b5ae | 1261 | void (*pull_stats)(struct efx_nic *efx); |
ef2b90ee | 1262 | void (*stop_stats)(struct efx_nic *efx); |
06629f07 | 1263 | void (*set_id_led)(struct efx_nic *efx, enum efx_led_mode mode); |
ef2b90ee | 1264 | void (*push_irq_moderation)(struct efx_channel *channel); |
d3245b28 | 1265 | int (*reconfigure_port)(struct efx_nic *efx); |
9dd3a13b | 1266 | void (*prepare_enable_fc_tx)(struct efx_nic *efx); |
710b208d BH |
1267 | int (*reconfigure_mac)(struct efx_nic *efx); |
1268 | bool (*check_mac_fault)(struct efx_nic *efx); | |
89c758fa BH |
1269 | void (*get_wol)(struct efx_nic *efx, struct ethtool_wolinfo *wol); |
1270 | int (*set_wol)(struct efx_nic *efx, u32 type); | |
1271 | void (*resume_wol)(struct efx_nic *efx); | |
d4f2cecc | 1272 | int (*test_chip)(struct efx_nic *efx, struct efx_self_tests *tests); |
0aa3fbaa | 1273 | int (*test_nvram)(struct efx_nic *efx); |
f3ad5003 BH |
1274 | void (*mcdi_request)(struct efx_nic *efx, |
1275 | const efx_dword_t *hdr, size_t hdr_len, | |
1276 | const efx_dword_t *sdu, size_t sdu_len); | |
1277 | bool (*mcdi_poll_response)(struct efx_nic *efx); | |
1278 | void (*mcdi_read_response)(struct efx_nic *efx, efx_dword_t *pdu, | |
1279 | size_t pdu_offset, size_t pdu_len); | |
1280 | int (*mcdi_poll_reboot)(struct efx_nic *efx); | |
c577e59e | 1281 | void (*mcdi_reboot_detected)(struct efx_nic *efx); |
86094f7f | 1282 | void (*irq_enable_master)(struct efx_nic *efx); |
942e298e | 1283 | int (*irq_test_generate)(struct efx_nic *efx); |
86094f7f BH |
1284 | void (*irq_disable_non_ev)(struct efx_nic *efx); |
1285 | irqreturn_t (*irq_handle_msi)(int irq, void *dev_id); | |
1286 | irqreturn_t (*irq_handle_legacy)(int irq, void *dev_id); | |
1287 | int (*tx_probe)(struct efx_tx_queue *tx_queue); | |
1288 | void (*tx_init)(struct efx_tx_queue *tx_queue); | |
1289 | void (*tx_remove)(struct efx_tx_queue *tx_queue); | |
1290 | void (*tx_write)(struct efx_tx_queue *tx_queue); | |
267c0157 JC |
1291 | int (*rx_push_rss_config)(struct efx_nic *efx, bool user, |
1292 | const u32 *rx_indir_table); | |
86094f7f BH |
1293 | int (*rx_probe)(struct efx_rx_queue *rx_queue); |
1294 | void (*rx_init)(struct efx_rx_queue *rx_queue); | |
1295 | void (*rx_remove)(struct efx_rx_queue *rx_queue); | |
1296 | void (*rx_write)(struct efx_rx_queue *rx_queue); | |
1297 | void (*rx_defer_refill)(struct efx_rx_queue *rx_queue); | |
1298 | int (*ev_probe)(struct efx_channel *channel); | |
261e4d96 | 1299 | int (*ev_init)(struct efx_channel *channel); |
86094f7f BH |
1300 | void (*ev_fini)(struct efx_channel *channel); |
1301 | void (*ev_remove)(struct efx_channel *channel); | |
1302 | int (*ev_process)(struct efx_channel *channel, int quota); | |
1303 | void (*ev_read_ack)(struct efx_channel *channel); | |
1304 | void (*ev_test_generate)(struct efx_channel *channel); | |
add72477 BH |
1305 | int (*filter_table_probe)(struct efx_nic *efx); |
1306 | void (*filter_table_restore)(struct efx_nic *efx); | |
1307 | void (*filter_table_remove)(struct efx_nic *efx); | |
1308 | void (*filter_update_rx_scatter)(struct efx_nic *efx); | |
1309 | s32 (*filter_insert)(struct efx_nic *efx, | |
1310 | struct efx_filter_spec *spec, bool replace); | |
1311 | int (*filter_remove_safe)(struct efx_nic *efx, | |
1312 | enum efx_filter_priority priority, | |
1313 | u32 filter_id); | |
1314 | int (*filter_get_safe)(struct efx_nic *efx, | |
1315 | enum efx_filter_priority priority, | |
1316 | u32 filter_id, struct efx_filter_spec *); | |
fbd79120 BH |
1317 | int (*filter_clear_rx)(struct efx_nic *efx, |
1318 | enum efx_filter_priority priority); | |
add72477 BH |
1319 | u32 (*filter_count_rx_used)(struct efx_nic *efx, |
1320 | enum efx_filter_priority priority); | |
1321 | u32 (*filter_get_rx_id_limit)(struct efx_nic *efx); | |
1322 | s32 (*filter_get_rx_ids)(struct efx_nic *efx, | |
1323 | enum efx_filter_priority priority, | |
1324 | u32 *buf, u32 size); | |
1325 | #ifdef CONFIG_RFS_ACCEL | |
1326 | s32 (*filter_rfs_insert)(struct efx_nic *efx, | |
1327 | struct efx_filter_spec *spec); | |
1328 | bool (*filter_rfs_expire_one)(struct efx_nic *efx, u32 flow_id, | |
1329 | unsigned int index); | |
1330 | #endif | |
45a3fd55 BH |
1331 | #ifdef CONFIG_SFC_MTD |
1332 | int (*mtd_probe)(struct efx_nic *efx); | |
1333 | void (*mtd_rename)(struct efx_mtd_partition *part); | |
1334 | int (*mtd_read)(struct mtd_info *mtd, loff_t start, size_t len, | |
1335 | size_t *retlen, u8 *buffer); | |
1336 | int (*mtd_erase)(struct mtd_info *mtd, loff_t start, size_t len); | |
1337 | int (*mtd_write)(struct mtd_info *mtd, loff_t start, size_t len, | |
1338 | size_t *retlen, const u8 *buffer); | |
1339 | int (*mtd_sync)(struct mtd_info *mtd); | |
1340 | #endif | |
977a5d5d | 1341 | void (*ptp_write_host_time)(struct efx_nic *efx, u32 host_time); |
bd9a265d | 1342 | int (*ptp_set_ts_sync_events)(struct efx_nic *efx, bool en, bool temp); |
9ec06595 DP |
1343 | int (*ptp_set_ts_config)(struct efx_nic *efx, |
1344 | struct hwtstamp_config *init); | |
834e23dd | 1345 | int (*sriov_configure)(struct efx_nic *efx, int num_vfs); |
4a53ea8a AR |
1346 | int (*vlan_rx_add_vid)(struct efx_nic *efx, __be16 proto, u16 vid); |
1347 | int (*vlan_rx_kill_vid)(struct efx_nic *efx, __be16 proto, u16 vid); | |
d98a4ffe SS |
1348 | int (*sriov_init)(struct efx_nic *efx); |
1349 | void (*sriov_fini)(struct efx_nic *efx); | |
d98a4ffe SS |
1350 | bool (*sriov_wanted)(struct efx_nic *efx); |
1351 | void (*sriov_reset)(struct efx_nic *efx); | |
7fa8d547 SS |
1352 | void (*sriov_flr)(struct efx_nic *efx, unsigned vf_i); |
1353 | int (*sriov_set_vf_mac)(struct efx_nic *efx, int vf_i, u8 *mac); | |
1354 | int (*sriov_set_vf_vlan)(struct efx_nic *efx, int vf_i, u16 vlan, | |
1355 | u8 qos); | |
1356 | int (*sriov_set_vf_spoofchk)(struct efx_nic *efx, int vf_i, | |
1357 | bool spoofchk); | |
1358 | int (*sriov_get_vf_config)(struct efx_nic *efx, int vf_i, | |
1359 | struct ifla_vf_info *ivi); | |
4392dc69 EC |
1360 | int (*sriov_set_vf_link_state)(struct efx_nic *efx, int vf_i, |
1361 | int link_state); | |
1d051e00 SS |
1362 | int (*sriov_get_phys_port_id)(struct efx_nic *efx, |
1363 | struct netdev_phys_item_id *ppid); | |
6d8aaaf6 DP |
1364 | int (*vswitching_probe)(struct efx_nic *efx); |
1365 | int (*vswitching_restore)(struct efx_nic *efx); | |
1366 | void (*vswitching_remove)(struct efx_nic *efx); | |
0d5e0fbb | 1367 | int (*get_mac_address)(struct efx_nic *efx, unsigned char *perm_addr); |
910c8789 | 1368 | int (*set_mac_address)(struct efx_nic *efx); |
b895d73e | 1369 | |
daeda630 | 1370 | int revision; |
8ceee660 BH |
1371 | unsigned int txd_ptr_tbl_base; |
1372 | unsigned int rxd_ptr_tbl_base; | |
1373 | unsigned int buf_tbl_base; | |
1374 | unsigned int evq_ptr_tbl_base; | |
1375 | unsigned int evq_rptr_tbl_base; | |
9bbd7d9a | 1376 | u64 max_dma_mask; |
43a3739d JC |
1377 | unsigned int rx_prefix_size; |
1378 | unsigned int rx_hash_offset; | |
bd9a265d | 1379 | unsigned int rx_ts_offset; |
8ceee660 | 1380 | unsigned int rx_buffer_padding; |
85740cdf | 1381 | bool can_rx_scatter; |
e8c68c0a | 1382 | bool always_rx_scatter; |
8ceee660 | 1383 | unsigned int max_interrupt_mode; |
cc180b69 | 1384 | unsigned int timer_period_max; |
c8f44aff | 1385 | netdev_features_t offload_features; |
df2cd8af | 1386 | int mcdi_max_ver; |
add72477 | 1387 | unsigned int max_rx_ip_filters; |
9ec06595 | 1388 | u32 hwtstamp_filters; |
8ceee660 BH |
1389 | }; |
1390 | ||
1391 | /************************************************************************** | |
1392 | * | |
1393 | * Prototypes and inline functions | |
1394 | * | |
1395 | *************************************************************************/ | |
1396 | ||
f7d12cdc BH |
1397 | static inline struct efx_channel * |
1398 | efx_get_channel(struct efx_nic *efx, unsigned index) | |
1399 | { | |
1400 | EFX_BUG_ON_PARANOID(index >= efx->n_channels); | |
8313aca3 | 1401 | return efx->channel[index]; |
f7d12cdc BH |
1402 | } |
1403 | ||
8ceee660 BH |
1404 | /* Iterate over all used channels */ |
1405 | #define efx_for_each_channel(_channel, _efx) \ | |
8313aca3 BH |
1406 | for (_channel = (_efx)->channel[0]; \ |
1407 | _channel; \ | |
1408 | _channel = (_channel->channel + 1 < (_efx)->n_channels) ? \ | |
1409 | (_efx)->channel[_channel->channel + 1] : NULL) | |
8ceee660 | 1410 | |
7f967c01 BH |
1411 | /* Iterate over all used channels in reverse */ |
1412 | #define efx_for_each_channel_rev(_channel, _efx) \ | |
1413 | for (_channel = (_efx)->channel[(_efx)->n_channels - 1]; \ | |
1414 | _channel; \ | |
1415 | _channel = _channel->channel ? \ | |
1416 | (_efx)->channel[_channel->channel - 1] : NULL) | |
1417 | ||
97653431 BH |
1418 | static inline struct efx_tx_queue * |
1419 | efx_get_tx_queue(struct efx_nic *efx, unsigned index, unsigned type) | |
1420 | { | |
1421 | EFX_BUG_ON_PARANOID(index >= efx->n_tx_channels || | |
1422 | type >= EFX_TXQ_TYPES); | |
1423 | return &efx->channel[efx->tx_channel_offset + index]->tx_queue[type]; | |
1424 | } | |
f7d12cdc | 1425 | |
525da907 BH |
1426 | static inline bool efx_channel_has_tx_queues(struct efx_channel *channel) |
1427 | { | |
1428 | return channel->channel - channel->efx->tx_channel_offset < | |
1429 | channel->efx->n_tx_channels; | |
1430 | } | |
1431 | ||
f7d12cdc BH |
1432 | static inline struct efx_tx_queue * |
1433 | efx_channel_get_tx_queue(struct efx_channel *channel, unsigned type) | |
1434 | { | |
525da907 BH |
1435 | EFX_BUG_ON_PARANOID(!efx_channel_has_tx_queues(channel) || |
1436 | type >= EFX_TXQ_TYPES); | |
1437 | return &channel->tx_queue[type]; | |
f7d12cdc | 1438 | } |
8ceee660 | 1439 | |
94b274bf BH |
1440 | static inline bool efx_tx_queue_used(struct efx_tx_queue *tx_queue) |
1441 | { | |
1442 | return !(tx_queue->efx->net_dev->num_tc < 2 && | |
1443 | tx_queue->queue & EFX_TXQ_TYPE_HIGHPRI); | |
1444 | } | |
1445 | ||
8ceee660 BH |
1446 | /* Iterate over all TX queues belonging to a channel */ |
1447 | #define efx_for_each_channel_tx_queue(_tx_queue, _channel) \ | |
525da907 BH |
1448 | if (!efx_channel_has_tx_queues(_channel)) \ |
1449 | ; \ | |
1450 | else \ | |
1451 | for (_tx_queue = (_channel)->tx_queue; \ | |
94b274bf BH |
1452 | _tx_queue < (_channel)->tx_queue + EFX_TXQ_TYPES && \ |
1453 | efx_tx_queue_used(_tx_queue); \ | |
525da907 | 1454 | _tx_queue++) |
8ceee660 | 1455 | |
94b274bf BH |
1456 | /* Iterate over all possible TX queues belonging to a channel */ |
1457 | #define efx_for_each_possible_channel_tx_queue(_tx_queue, _channel) \ | |
73e0026f BH |
1458 | if (!efx_channel_has_tx_queues(_channel)) \ |
1459 | ; \ | |
1460 | else \ | |
1461 | for (_tx_queue = (_channel)->tx_queue; \ | |
1462 | _tx_queue < (_channel)->tx_queue + EFX_TXQ_TYPES; \ | |
1463 | _tx_queue++) | |
94b274bf | 1464 | |
525da907 BH |
1465 | static inline bool efx_channel_has_rx_queue(struct efx_channel *channel) |
1466 | { | |
79d68b37 | 1467 | return channel->rx_queue.core_index >= 0; |
525da907 BH |
1468 | } |
1469 | ||
f7d12cdc BH |
1470 | static inline struct efx_rx_queue * |
1471 | efx_channel_get_rx_queue(struct efx_channel *channel) | |
1472 | { | |
525da907 BH |
1473 | EFX_BUG_ON_PARANOID(!efx_channel_has_rx_queue(channel)); |
1474 | return &channel->rx_queue; | |
f7d12cdc BH |
1475 | } |
1476 | ||
8ceee660 BH |
1477 | /* Iterate over all RX queues belonging to a channel */ |
1478 | #define efx_for_each_channel_rx_queue(_rx_queue, _channel) \ | |
525da907 BH |
1479 | if (!efx_channel_has_rx_queue(_channel)) \ |
1480 | ; \ | |
1481 | else \ | |
1482 | for (_rx_queue = &(_channel)->rx_queue; \ | |
1483 | _rx_queue; \ | |
1484 | _rx_queue = NULL) | |
8ceee660 | 1485 | |
ba1e8a35 BH |
1486 | static inline struct efx_channel * |
1487 | efx_rx_queue_channel(struct efx_rx_queue *rx_queue) | |
1488 | { | |
8313aca3 | 1489 | return container_of(rx_queue, struct efx_channel, rx_queue); |
ba1e8a35 BH |
1490 | } |
1491 | ||
1492 | static inline int efx_rx_queue_index(struct efx_rx_queue *rx_queue) | |
1493 | { | |
8313aca3 | 1494 | return efx_rx_queue_channel(rx_queue)->channel; |
ba1e8a35 BH |
1495 | } |
1496 | ||
8ceee660 BH |
1497 | /* Returns a pointer to the specified receive buffer in the RX |
1498 | * descriptor queue. | |
1499 | */ | |
1500 | static inline struct efx_rx_buffer *efx_rx_buffer(struct efx_rx_queue *rx_queue, | |
1501 | unsigned int index) | |
1502 | { | |
807540ba | 1503 | return &rx_queue->buffer[index]; |
8ceee660 BH |
1504 | } |
1505 | ||
8ceee660 BH |
1506 | /** |
1507 | * EFX_MAX_FRAME_LEN - calculate maximum frame length | |
1508 | * | |
1509 | * This calculates the maximum frame length that will be used for a | |
1510 | * given MTU. The frame length will be equal to the MTU plus a | |
1511 | * constant amount of header space and padding. This is the quantity | |
1512 | * that the net driver will program into the MAC as the maximum frame | |
1513 | * length. | |
1514 | * | |
754c653a | 1515 | * The 10G MAC requires 8-byte alignment on the frame |
8ceee660 | 1516 | * length, so we round up to the nearest 8. |
cc11763b BH |
1517 | * |
1518 | * Re-clocking by the XGXS on RX can reduce an IPG to 32 bits (half an | |
1519 | * XGMII cycle). If the frame length reaches the maximum value in the | |
1520 | * same cycle, the XMAC can miss the IPG altogether. We work around | |
1521 | * this by adding a further 16 bytes. | |
8ceee660 | 1522 | */ |
6f24e5d5 | 1523 | #define EFX_FRAME_PAD 16 |
8ceee660 | 1524 | #define EFX_MAX_FRAME_LEN(mtu) \ |
6f24e5d5 | 1525 | (ALIGN(((mtu) + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN + EFX_FRAME_PAD), 8)) |
8ceee660 | 1526 | |
7c236c43 SH |
1527 | static inline bool efx_xmit_with_hwtstamp(struct sk_buff *skb) |
1528 | { | |
1529 | return skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP; | |
1530 | } | |
1531 | static inline void efx_xmit_hwtstamp_pending(struct sk_buff *skb) | |
1532 | { | |
1533 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; | |
1534 | } | |
8ceee660 | 1535 | |
e4478ad1 MH |
1536 | /* Get all supported features. |
1537 | * If a feature is not fixed, it is present in hw_features. | |
1538 | * If a feature is fixed, it does not present in hw_features, but | |
1539 | * always in features. | |
1540 | */ | |
1541 | static inline netdev_features_t efx_supported_features(const struct efx_nic *efx) | |
1542 | { | |
1543 | const struct net_device *net_dev = efx->net_dev; | |
1544 | ||
1545 | return net_dev->features | net_dev->hw_features; | |
1546 | } | |
1547 | ||
8ceee660 | 1548 | #endif /* EFX_NET_DRIVER_H */ |