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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> |
45a3fd55 | 27 | #include <linux/mtd/mtd.h> |
36763266 | 28 | #include <net/busy_poll.h> |
8c423501 | 29 | #include <net/xdp.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 | |
86e85bf6 JDB |
94 | /* Non-standard XDP_PACKET_HEADROOM and tailroom to satisfy XDP_REDIRECT and |
95 | * still fit two standard MTU size packets into a single 4K page. | |
96 | */ | |
97 | #define EFX_XDP_HEADROOM 128 | |
98 | #define EFX_XDP_TAILROOM SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) | |
99 | ||
7c236c43 SH |
100 | /* Forward declare Precision Time Protocol (PTP) support structure. */ |
101 | struct efx_ptp_data; | |
9ec06595 | 102 | struct hwtstamp_config; |
7c236c43 | 103 | |
d4f2cecc BH |
104 | struct efx_self_tests; |
105 | ||
8ceee660 | 106 | /** |
caa75586 BH |
107 | * struct efx_buffer - A general-purpose DMA buffer |
108 | * @addr: host base address of the buffer | |
8ceee660 BH |
109 | * @dma_addr: DMA base address of the buffer |
110 | * @len: Buffer length, in bytes | |
8ceee660 | 111 | * |
caa75586 BH |
112 | * The NIC uses these buffers for its interrupt status registers and |
113 | * MAC stats dumps. | |
8ceee660 | 114 | */ |
caa75586 | 115 | struct efx_buffer { |
8ceee660 BH |
116 | void *addr; |
117 | dma_addr_t dma_addr; | |
118 | unsigned int len; | |
caa75586 BH |
119 | }; |
120 | ||
121 | /** | |
122 | * struct efx_special_buffer - DMA buffer entered into buffer table | |
123 | * @buf: Standard &struct efx_buffer | |
124 | * @index: Buffer index within controller;s buffer table | |
125 | * @entries: Number of buffer table entries | |
126 | * | |
127 | * The NIC has a buffer table that maps buffers of size %EFX_BUF_SIZE. | |
128 | * Event and descriptor rings are addressed via one or more buffer | |
129 | * table entries (and so can be physically non-contiguous, although we | |
130 | * currently do not take advantage of that). On Falcon and Siena we | |
131 | * have to take care of allocating and initialising the entries | |
132 | * ourselves. On later hardware this is managed by the firmware and | |
133 | * @index and @entries are left as 0. | |
134 | */ | |
135 | struct efx_special_buffer { | |
136 | struct efx_buffer buf; | |
5bbe2f4f BH |
137 | unsigned int index; |
138 | unsigned int entries; | |
8ceee660 BH |
139 | }; |
140 | ||
141 | /** | |
7668ff9c BH |
142 | * struct efx_tx_buffer - buffer state for a TX descriptor |
143 | * @skb: When @flags & %EFX_TX_BUF_SKB, the associated socket buffer to be | |
144 | * freed when descriptor completes | |
8c423501 CM |
145 | * @xdpf: When @flags & %EFX_TX_BUF_XDP, the XDP frame information; its @data |
146 | * member is the associated buffer to drop a page reference on. | |
e1253f39 AM |
147 | * @option: When @flags & %EFX_TX_BUF_OPTION, an EF10-specific option |
148 | * descriptor. | |
8ceee660 | 149 | * @dma_addr: DMA address of the fragment. |
7668ff9c | 150 | * @flags: Flags for allocation and DMA mapping type |
8ceee660 BH |
151 | * @len: Length of this fragment. |
152 | * This field is zero when the queue slot is empty. | |
8ceee660 | 153 | * @unmap_len: Length of this fragment to unmap |
2acdb92e AR |
154 | * @dma_offset: Offset of @dma_addr from the address of the backing DMA mapping. |
155 | * Only valid if @unmap_len != 0. | |
8ceee660 BH |
156 | */ |
157 | struct efx_tx_buffer { | |
8c423501 CM |
158 | union { |
159 | const struct sk_buff *skb; | |
160 | struct xdp_frame *xdpf; | |
161 | }; | |
ba8977bd | 162 | union { |
e1253f39 | 163 | efx_qword_t option; /* EF10 */ |
ba8977bd BH |
164 | dma_addr_t dma_addr; |
165 | }; | |
7668ff9c | 166 | unsigned short flags; |
8ceee660 | 167 | unsigned short len; |
8ceee660 | 168 | unsigned short unmap_len; |
2acdb92e | 169 | unsigned short dma_offset; |
8ceee660 | 170 | }; |
7668ff9c BH |
171 | #define EFX_TX_BUF_CONT 1 /* not last descriptor of packet */ |
172 | #define EFX_TX_BUF_SKB 2 /* buffer is last part of skb */ | |
7668ff9c | 173 | #define EFX_TX_BUF_MAP_SINGLE 8 /* buffer was mapped with dma_map_single() */ |
ba8977bd | 174 | #define EFX_TX_BUF_OPTION 0x10 /* empty buffer for option descriptor */ |
8c423501 | 175 | #define EFX_TX_BUF_XDP 0x20 /* buffer was sent with XDP */ |
8ceee660 BH |
176 | |
177 | /** | |
178 | * struct efx_tx_queue - An Efx TX queue | |
179 | * | |
180 | * This is a ring buffer of TX fragments. | |
181 | * Since the TX completion path always executes on the same | |
182 | * CPU and the xmit path can operate on different CPUs, | |
183 | * performance is increased by ensuring that the completion | |
184 | * path and the xmit path operate on different cache lines. | |
185 | * This is particularly important if the xmit path is always | |
186 | * executing on one CPU which is different from the completion | |
187 | * path. There is also a cache line for members which are | |
188 | * read but not written on the fast path. | |
189 | * | |
190 | * @efx: The associated Efx NIC | |
191 | * @queue: DMA queue number | |
93171b14 | 192 | * @tso_version: Version of TSO in use for this queue. |
8ceee660 | 193 | * @channel: The associated channel |
c04bfc6b | 194 | * @core_txq: The networking core TX queue structure |
8ceee660 | 195 | * @buffer: The software buffer ring |
e9117e50 BK |
196 | * @cb_page: Array of pages of copy buffers. Carved up according to |
197 | * %EFX_TX_CB_ORDER into %EFX_TX_CB_SIZE-sized chunks. | |
8ceee660 | 198 | * @txd: The hardware descriptor ring |
ecc910f5 | 199 | * @ptr_mask: The size of the ring minus 1. |
183233be BH |
200 | * @piobuf: PIO buffer region for this TX queue (shared with its partner). |
201 | * Size of the region is efx_piobuf_size. | |
202 | * @piobuf_offset: Buffer offset to be specified in PIO descriptors | |
94b274bf | 203 | * @initialised: Has hardware queue been initialised? |
b9b603d4 | 204 | * @timestamping: Is timestamping enabled for this channel? |
3990a8ff | 205 | * @xdp_tx: Is this an XDP tx queue? |
e9117e50 BK |
206 | * @handle_tso: TSO xmit preparation handler. Sets up the TSO metadata and |
207 | * may also map tx data, depending on the nature of the TSO implementation. | |
8ceee660 BH |
208 | * @read_count: Current read pointer. |
209 | * This is the number of buffers that have been removed from both rings. | |
cd38557d BH |
210 | * @old_write_count: The value of @write_count when last checked. |
211 | * This is here for performance reasons. The xmit path will | |
212 | * only get the up-to-date value of @write_count if this | |
213 | * variable indicates that the queue is empty. This is to | |
214 | * avoid cache-line ping-pong between the xmit path and the | |
215 | * completion path. | |
02e12165 | 216 | * @merge_events: Number of TX merged completion events |
b9b603d4 MH |
217 | * @completed_timestamp_major: Top part of the most recent tx timestamp. |
218 | * @completed_timestamp_minor: Low part of the most recent tx timestamp. | |
8ceee660 BH |
219 | * @insert_count: Current insert pointer |
220 | * This is the number of buffers that have been added to the | |
221 | * software ring. | |
222 | * @write_count: Current write pointer | |
223 | * This is the number of buffers that have been added to the | |
224 | * hardware ring. | |
de1deff9 EC |
225 | * @packet_write_count: Completable write pointer |
226 | * This is the write pointer of the last packet written. | |
227 | * Normally this will equal @write_count, but as option descriptors | |
228 | * don't produce completion events, they won't update this. | |
229 | * Filled in iff @efx->type->option_descriptors; only used for PIO. | |
230 | * Thus, this is written and used on EF10, and neither on farch. | |
8ceee660 BH |
231 | * @old_read_count: The value of read_count when last checked. |
232 | * This is here for performance reasons. The xmit path will | |
233 | * only get the up-to-date value of read_count if this | |
234 | * variable indicates that the queue is full. This is to | |
235 | * avoid cache-line ping-pong between the xmit path and the | |
236 | * completion path. | |
b9b39b62 BH |
237 | * @tso_bursts: Number of times TSO xmit invoked by kernel |
238 | * @tso_long_headers: Number of packets with headers too long for standard | |
239 | * blocks | |
240 | * @tso_packets: Number of packets via the TSO xmit path | |
46d1efd8 | 241 | * @tso_fallbacks: Number of times TSO fallback used |
cd38557d | 242 | * @pushes: Number of times the TX push feature has been used |
ee45fd92 | 243 | * @pio_packets: Number of times the TX PIO feature has been used |
b2663a4f | 244 | * @xmit_more_available: Are any packets waiting to be pushed to the NIC |
e9117e50 | 245 | * @cb_packets: Number of times the TX copybreak feature has been used |
cd38557d BH |
246 | * @empty_read_count: If the completion path has seen the queue as empty |
247 | * and the transmission path has not yet checked this, the value of | |
248 | * @read_count bitwise-added to %EFX_EMPTY_COUNT_VALID; otherwise 0. | |
8ceee660 BH |
249 | */ |
250 | struct efx_tx_queue { | |
251 | /* Members which don't change on the fast path */ | |
252 | struct efx_nic *efx ____cacheline_aligned_in_smp; | |
a4900ac9 | 253 | unsigned queue; |
93171b14 | 254 | unsigned int tso_version; |
8ceee660 | 255 | struct efx_channel *channel; |
c04bfc6b | 256 | struct netdev_queue *core_txq; |
8ceee660 | 257 | struct efx_tx_buffer *buffer; |
e9117e50 | 258 | struct efx_buffer *cb_page; |
8ceee660 | 259 | struct efx_special_buffer txd; |
ecc910f5 | 260 | unsigned int ptr_mask; |
183233be BH |
261 | void __iomem *piobuf; |
262 | unsigned int piobuf_offset; | |
94b274bf | 263 | bool initialised; |
b9b603d4 | 264 | bool timestamping; |
3990a8ff | 265 | bool xdp_tx; |
e9117e50 BK |
266 | |
267 | /* Function pointers used in the fast path. */ | |
268 | int (*handle_tso)(struct efx_tx_queue*, struct sk_buff*, bool *); | |
8ceee660 BH |
269 | |
270 | /* Members used mainly on the completion path */ | |
271 | unsigned int read_count ____cacheline_aligned_in_smp; | |
cd38557d | 272 | unsigned int old_write_count; |
02e12165 | 273 | unsigned int merge_events; |
c936835c PD |
274 | unsigned int bytes_compl; |
275 | unsigned int pkts_compl; | |
b9b603d4 MH |
276 | u32 completed_timestamp_major; |
277 | u32 completed_timestamp_minor; | |
8ceee660 BH |
278 | |
279 | /* Members used only on the xmit path */ | |
280 | unsigned int insert_count ____cacheline_aligned_in_smp; | |
281 | unsigned int write_count; | |
de1deff9 | 282 | unsigned int packet_write_count; |
8ceee660 | 283 | unsigned int old_read_count; |
b9b39b62 BH |
284 | unsigned int tso_bursts; |
285 | unsigned int tso_long_headers; | |
286 | unsigned int tso_packets; | |
46d1efd8 | 287 | unsigned int tso_fallbacks; |
cd38557d | 288 | unsigned int pushes; |
ee45fd92 | 289 | unsigned int pio_packets; |
b2663a4f | 290 | bool xmit_more_available; |
e9117e50 | 291 | unsigned int cb_packets; |
8ccf3800 AR |
292 | /* Statistics to supplement MAC stats */ |
293 | unsigned long tx_packets; | |
cd38557d BH |
294 | |
295 | /* Members shared between paths and sometimes updated */ | |
296 | unsigned int empty_read_count ____cacheline_aligned_in_smp; | |
297 | #define EFX_EMPTY_COUNT_VALID 0x80000000 | |
525d9e82 | 298 | atomic_t flush_outstanding; |
8ceee660 BH |
299 | }; |
300 | ||
e9117e50 BK |
301 | #define EFX_TX_CB_ORDER 7 |
302 | #define EFX_TX_CB_SIZE (1 << EFX_TX_CB_ORDER) - NET_IP_ALIGN | |
303 | ||
8ceee660 BH |
304 | /** |
305 | * struct efx_rx_buffer - An Efx RX data buffer | |
306 | * @dma_addr: DMA base address of the buffer | |
97d48a10 | 307 | * @page: The associated page buffer. |
db339569 | 308 | * Will be %NULL if the buffer slot is currently free. |
b74e3e8c BH |
309 | * @page_offset: If pending: offset in @page of DMA base address. |
310 | * If completed: offset in @page of Ethernet header. | |
80c2e716 BH |
311 | * @len: If pending: length for DMA descriptor. |
312 | * If completed: received length, excluding hash prefix. | |
85740cdf BH |
313 | * @flags: Flags for buffer and packet state. These are only set on the |
314 | * first buffer of a scattered packet. | |
8ceee660 BH |
315 | */ |
316 | struct efx_rx_buffer { | |
317 | dma_addr_t dma_addr; | |
97d48a10 | 318 | struct page *page; |
b590ace0 BH |
319 | u16 page_offset; |
320 | u16 len; | |
db339569 | 321 | u16 flags; |
8ceee660 | 322 | }; |
179ea7f0 | 323 | #define EFX_RX_BUF_LAST_IN_PAGE 0x0001 |
db339569 BH |
324 | #define EFX_RX_PKT_CSUMMED 0x0002 |
325 | #define EFX_RX_PKT_DISCARD 0x0004 | |
d07df8ec | 326 | #define EFX_RX_PKT_TCP 0x0040 |
3dced740 | 327 | #define EFX_RX_PKT_PREFIX_LEN 0x0080 /* length is in prefix only */ |
da50ae2e | 328 | #define EFX_RX_PKT_CSUM_LEVEL 0x0200 |
8ceee660 | 329 | |
62b330ba SH |
330 | /** |
331 | * struct efx_rx_page_state - Page-based rx buffer state | |
332 | * | |
333 | * Inserted at the start of every page allocated for receive buffers. | |
334 | * Used to facilitate sharing dma mappings between recycled rx buffers | |
335 | * and those passed up to the kernel. | |
336 | * | |
62b330ba SH |
337 | * @dma_addr: The dma address of this page. |
338 | */ | |
339 | struct efx_rx_page_state { | |
62b330ba SH |
340 | dma_addr_t dma_addr; |
341 | ||
62f19142 | 342 | unsigned int __pad[] ____cacheline_aligned; |
62b330ba SH |
343 | }; |
344 | ||
8ceee660 BH |
345 | /** |
346 | * struct efx_rx_queue - An Efx RX queue | |
347 | * @efx: The associated Efx NIC | |
79d68b37 SH |
348 | * @core_index: Index of network core RX queue. Will be >= 0 iff this |
349 | * is associated with a real RX queue. | |
8ceee660 BH |
350 | * @buffer: The software buffer ring |
351 | * @rxd: The hardware descriptor ring | |
ecc910f5 | 352 | * @ptr_mask: The size of the ring minus 1. |
d8aec745 | 353 | * @refill_enabled: Enable refill whenever fill level is low |
9f2cb71c BH |
354 | * @flush_pending: Set when a RX flush is pending. Has the same lifetime as |
355 | * @rxq_flush_pending. | |
8ceee660 BH |
356 | * @added_count: Number of buffers added to the receive queue. |
357 | * @notified_count: Number of buffers given to NIC (<= @added_count). | |
358 | * @removed_count: Number of buffers removed from the receive queue. | |
e8c68c0a JC |
359 | * @scatter_n: Used by NIC specific receive code. |
360 | * @scatter_len: Used by NIC specific receive code. | |
2768935a DP |
361 | * @page_ring: The ring to store DMA mapped pages for reuse. |
362 | * @page_add: Counter to calculate the write pointer for the recycle ring. | |
363 | * @page_remove: Counter to calculate the read pointer for the recycle ring. | |
364 | * @page_recycle_count: The number of pages that have been recycled. | |
365 | * @page_recycle_failed: The number of pages that couldn't be recycled because | |
366 | * the kernel still held a reference to them. | |
367 | * @page_recycle_full: The number of pages that were released because the | |
368 | * recycle ring was full. | |
369 | * @page_ptr_mask: The number of pages in the RX recycle ring minus 1. | |
8ceee660 BH |
370 | * @max_fill: RX descriptor maximum fill level (<= ring size) |
371 | * @fast_fill_trigger: RX descriptor fill level that will trigger a fast fill | |
372 | * (<= @max_fill) | |
8ceee660 BH |
373 | * @min_fill: RX descriptor minimum non-zero fill level. |
374 | * This records the minimum fill level observed when a ring | |
375 | * refill was triggered. | |
2768935a | 376 | * @recycle_count: RX buffer recycle counter. |
90d683af | 377 | * @slow_fill: Timer used to defer efx_nic_generate_fill_event(). |
eb9a36be CM |
378 | * @xdp_rxq_info: XDP specific RX queue information. |
379 | * @xdp_rxq_info_valid: Is xdp_rxq_info valid data?. | |
8ceee660 BH |
380 | */ |
381 | struct efx_rx_queue { | |
382 | struct efx_nic *efx; | |
79d68b37 | 383 | int core_index; |
8ceee660 BH |
384 | struct efx_rx_buffer *buffer; |
385 | struct efx_special_buffer rxd; | |
ecc910f5 | 386 | unsigned int ptr_mask; |
d8aec745 | 387 | bool refill_enabled; |
9f2cb71c | 388 | bool flush_pending; |
8ceee660 | 389 | |
9bc2fc9b BH |
390 | unsigned int added_count; |
391 | unsigned int notified_count; | |
392 | unsigned int removed_count; | |
85740cdf | 393 | unsigned int scatter_n; |
e8c68c0a | 394 | unsigned int scatter_len; |
2768935a DP |
395 | struct page **page_ring; |
396 | unsigned int page_add; | |
397 | unsigned int page_remove; | |
398 | unsigned int page_recycle_count; | |
399 | unsigned int page_recycle_failed; | |
400 | unsigned int page_recycle_full; | |
401 | unsigned int page_ptr_mask; | |
8ceee660 BH |
402 | unsigned int max_fill; |
403 | unsigned int fast_fill_trigger; | |
8ceee660 BH |
404 | unsigned int min_fill; |
405 | unsigned int min_overfill; | |
2768935a | 406 | unsigned int recycle_count; |
90d683af | 407 | struct timer_list slow_fill; |
8ceee660 | 408 | unsigned int slow_fill_count; |
8ccf3800 AR |
409 | /* Statistics to supplement MAC stats */ |
410 | unsigned long rx_packets; | |
eb9a36be CM |
411 | struct xdp_rxq_info xdp_rxq_info; |
412 | bool xdp_rxq_info_valid; | |
8ceee660 BH |
413 | }; |
414 | ||
bd9a265d JC |
415 | enum efx_sync_events_state { |
416 | SYNC_EVENTS_DISABLED = 0, | |
417 | SYNC_EVENTS_QUIESCENT, | |
418 | SYNC_EVENTS_REQUESTED, | |
419 | SYNC_EVENTS_VALID, | |
420 | }; | |
421 | ||
8ceee660 BH |
422 | /** |
423 | * struct efx_channel - An Efx channel | |
424 | * | |
425 | * A channel comprises an event queue, at least one TX queue, at least | |
426 | * one RX queue, and an associated tasklet for processing the event | |
427 | * queue. | |
428 | * | |
429 | * @efx: Associated Efx NIC | |
8ceee660 | 430 | * @channel: Channel instance number |
7f967c01 | 431 | * @type: Channel type definition |
be3fc09c | 432 | * @eventq_init: Event queue initialised flag |
8ceee660 BH |
433 | * @enabled: Channel enabled indicator |
434 | * @irq: IRQ number (MSI and MSI-X only) | |
539de7c5 | 435 | * @irq_moderation_us: IRQ moderation value (in microseconds) |
8ceee660 BH |
436 | * @napi_dev: Net device used with NAPI |
437 | * @napi_str: NAPI control structure | |
36763266 AR |
438 | * @state: state for NAPI vs busy polling |
439 | * @state_lock: lock protecting @state | |
8ceee660 | 440 | * @eventq: Event queue buffer |
ecc910f5 | 441 | * @eventq_mask: Event queue pointer mask |
8ceee660 | 442 | * @eventq_read_ptr: Event queue read pointer |
dd40781e | 443 | * @event_test_cpu: Last CPU to handle interrupt or test event for this channel |
6fb70fd1 BH |
444 | * @irq_count: Number of IRQs since last adaptive moderation decision |
445 | * @irq_mod_score: IRQ moderation score | |
8490e75c EC |
446 | * @rfs_filter_count: number of accelerated RFS filters currently in place; |
447 | * equals the count of @rps_flow_id slots filled | |
448 | * @rfs_last_expiry: value of jiffies last time some accelerated RFS filters | |
449 | * were checked for expiry | |
450 | * @rfs_expire_index: next accelerated RFS filter ID to check for expiry | |
ca70bd42 EC |
451 | * @n_rfs_succeeded: number of successful accelerated RFS filter insertions |
452 | * @n_rfs_failed; number of failed accelerated RFS filter insertions | |
3af0f342 | 453 | * @filter_work: Work item for efx_filter_rfs_expire() |
faf8dcc1 JC |
454 | * @rps_flow_id: Flow IDs of filters allocated for accelerated RFS, |
455 | * indexed by filter ID | |
8ceee660 | 456 | * @n_rx_tobe_disc: Count of RX_TOBE_DISC errors |
8ceee660 BH |
457 | * @n_rx_ip_hdr_chksum_err: Count of RX IP header checksum errors |
458 | * @n_rx_tcp_udp_chksum_err: Count of RX TCP and UDP checksum errors | |
c1ac403b | 459 | * @n_rx_mcast_mismatch: Count of unmatched multicast frames |
8ceee660 BH |
460 | * @n_rx_frm_trunc: Count of RX_FRM_TRUNC errors |
461 | * @n_rx_overlength: Count of RX_OVERLENGTH errors | |
462 | * @n_skbuff_leaks: Count of skbuffs leaked due to RX overrun | |
85740cdf BH |
463 | * @n_rx_nodesc_trunc: Number of RX packets truncated and then dropped due to |
464 | * lack of descriptors | |
8127d661 BH |
465 | * @n_rx_merge_events: Number of RX merged completion events |
466 | * @n_rx_merge_packets: Number of RX packets completed by merged events | |
cd846bef CM |
467 | * @n_rx_xdp_drops: Count of RX packets intentionally dropped due to XDP |
468 | * @n_rx_xdp_bad_drops: Count of RX packets dropped due to XDP errors | |
469 | * @n_rx_xdp_tx: Count of RX packets retransmitted due to XDP | |
470 | * @n_rx_xdp_redirect: Count of RX packets redirected to a different NIC by XDP | |
85740cdf BH |
471 | * @rx_pkt_n_frags: Number of fragments in next packet to be delivered by |
472 | * __efx_rx_packet(), or zero if there is none | |
473 | * @rx_pkt_index: Ring index of first buffer for next packet to be delivered | |
474 | * by __efx_rx_packet(), if @rx_pkt_n_frags != 0 | |
e090bfb9 | 475 | * @rx_list: list of SKBs from current RX, awaiting processing |
8313aca3 | 476 | * @rx_queue: RX queue for this channel |
8313aca3 | 477 | * @tx_queue: TX queues for this channel |
bd9a265d JC |
478 | * @sync_events_state: Current state of sync events on this channel |
479 | * @sync_timestamp_major: Major part of the last ptp sync event | |
480 | * @sync_timestamp_minor: Minor part of the last ptp sync event | |
8ceee660 BH |
481 | */ |
482 | struct efx_channel { | |
483 | struct efx_nic *efx; | |
8ceee660 | 484 | int channel; |
7f967c01 | 485 | const struct efx_channel_type *type; |
be3fc09c | 486 | bool eventq_init; |
dc8cfa55 | 487 | bool enabled; |
8ceee660 | 488 | int irq; |
539de7c5 | 489 | unsigned int irq_moderation_us; |
8ceee660 BH |
490 | struct net_device *napi_dev; |
491 | struct napi_struct napi_str; | |
36763266 | 492 | #ifdef CONFIG_NET_RX_BUSY_POLL |
c0f9c7e4 BK |
493 | unsigned long busy_poll_state; |
494 | #endif | |
8ceee660 | 495 | struct efx_special_buffer eventq; |
ecc910f5 | 496 | unsigned int eventq_mask; |
8ceee660 | 497 | unsigned int eventq_read_ptr; |
dd40781e | 498 | int event_test_cpu; |
8ceee660 | 499 | |
6fb70fd1 BH |
500 | unsigned int irq_count; |
501 | unsigned int irq_mod_score; | |
64d8ad6d | 502 | #ifdef CONFIG_RFS_ACCEL |
8490e75c EC |
503 | unsigned int rfs_filter_count; |
504 | unsigned int rfs_last_expiry; | |
505 | unsigned int rfs_expire_index; | |
ca70bd42 EC |
506 | unsigned int n_rfs_succeeded; |
507 | unsigned int n_rfs_failed; | |
6fbc05e5 | 508 | struct delayed_work filter_work; |
faf8dcc1 JC |
509 | #define RPS_FLOW_ID_INVALID 0xFFFFFFFF |
510 | u32 *rps_flow_id; | |
64d8ad6d | 511 | #endif |
6fb70fd1 | 512 | |
a0ee3541 JC |
513 | unsigned int n_rx_tobe_disc; |
514 | unsigned int n_rx_ip_hdr_chksum_err; | |
515 | unsigned int n_rx_tcp_udp_chksum_err; | |
516 | unsigned int n_rx_outer_ip_hdr_chksum_err; | |
517 | unsigned int n_rx_outer_tcp_udp_chksum_err; | |
518 | unsigned int n_rx_inner_ip_hdr_chksum_err; | |
519 | unsigned int n_rx_inner_tcp_udp_chksum_err; | |
520 | unsigned int n_rx_eth_crc_err; | |
521 | unsigned int n_rx_mcast_mismatch; | |
522 | unsigned int n_rx_frm_trunc; | |
523 | unsigned int n_rx_overlength; | |
524 | unsigned int n_skbuff_leaks; | |
85740cdf | 525 | unsigned int n_rx_nodesc_trunc; |
8127d661 BH |
526 | unsigned int n_rx_merge_events; |
527 | unsigned int n_rx_merge_packets; | |
cd846bef CM |
528 | unsigned int n_rx_xdp_drops; |
529 | unsigned int n_rx_xdp_bad_drops; | |
530 | unsigned int n_rx_xdp_tx; | |
531 | unsigned int n_rx_xdp_redirect; | |
8ceee660 | 532 | |
85740cdf BH |
533 | unsigned int rx_pkt_n_frags; |
534 | unsigned int rx_pkt_index; | |
8ceee660 | 535 | |
e090bfb9 EC |
536 | struct list_head *rx_list; |
537 | ||
8313aca3 | 538 | struct efx_rx_queue rx_queue; |
94b274bf | 539 | struct efx_tx_queue tx_queue[EFX_TXQ_TYPES]; |
bd9a265d JC |
540 | |
541 | enum efx_sync_events_state sync_events_state; | |
542 | u32 sync_timestamp_major; | |
543 | u32 sync_timestamp_minor; | |
8ceee660 BH |
544 | }; |
545 | ||
d8291187 BH |
546 | /** |
547 | * struct efx_msi_context - Context for each MSI | |
548 | * @efx: The associated NIC | |
549 | * @index: Index of the channel/IRQ | |
550 | * @name: Name of the channel/IRQ | |
551 | * | |
552 | * Unlike &struct efx_channel, this is never reallocated and is always | |
553 | * safe for the IRQ handler to access. | |
554 | */ | |
555 | struct efx_msi_context { | |
556 | struct efx_nic *efx; | |
557 | unsigned int index; | |
558 | char name[IFNAMSIZ + 6]; | |
559 | }; | |
560 | ||
7f967c01 BH |
561 | /** |
562 | * struct efx_channel_type - distinguishes traffic and extra channels | |
563 | * @handle_no_channel: Handle failure to allocate an extra channel | |
564 | * @pre_probe: Set up extra state prior to initialisation | |
565 | * @post_remove: Tear down extra state after finalisation, if allocated. | |
566 | * May be called on channels that have not been probed. | |
567 | * @get_name: Generate the channel's name (used for its IRQ handler) | |
568 | * @copy: Copy the channel state prior to reallocation. May be %NULL if | |
569 | * reallocation is not supported. | |
c31e5f9f | 570 | * @receive_skb: Handle an skb ready to be passed to netif_receive_skb() |
2935e3c3 EC |
571 | * @want_txqs: Determine whether this channel should have TX queues |
572 | * created. If %NULL, TX queues are not created. | |
7f967c01 BH |
573 | * @keep_eventq: Flag for whether event queue should be kept initialised |
574 | * while the device is stopped | |
2935e3c3 EC |
575 | * @want_pio: Flag for whether PIO buffers should be linked to this |
576 | * channel's TX queues. | |
7f967c01 BH |
577 | */ |
578 | struct efx_channel_type { | |
579 | void (*handle_no_channel)(struct efx_nic *); | |
580 | int (*pre_probe)(struct efx_channel *); | |
c31e5f9f | 581 | void (*post_remove)(struct efx_channel *); |
7f967c01 BH |
582 | void (*get_name)(struct efx_channel *, char *buf, size_t len); |
583 | struct efx_channel *(*copy)(const struct efx_channel *); | |
4a74dc65 | 584 | bool (*receive_skb)(struct efx_channel *, struct sk_buff *); |
2935e3c3 | 585 | bool (*want_txqs)(struct efx_channel *); |
7f967c01 | 586 | bool keep_eventq; |
2935e3c3 | 587 | bool want_pio; |
7f967c01 BH |
588 | }; |
589 | ||
398468ed BH |
590 | enum efx_led_mode { |
591 | EFX_LED_OFF = 0, | |
592 | EFX_LED_ON = 1, | |
593 | EFX_LED_DEFAULT = 2 | |
594 | }; | |
595 | ||
c459302d BH |
596 | #define STRING_TABLE_LOOKUP(val, member) \ |
597 | ((val) < member ## _max) ? member ## _names[val] : "(invalid)" | |
598 | ||
18e83e4c | 599 | extern const char *const efx_loopback_mode_names[]; |
c459302d BH |
600 | extern const unsigned int efx_loopback_mode_max; |
601 | #define LOOPBACK_MODE(efx) \ | |
602 | STRING_TABLE_LOOKUP((efx)->loopback_mode, efx_loopback_mode) | |
603 | ||
18e83e4c | 604 | extern const char *const efx_reset_type_names[]; |
c459302d BH |
605 | extern const unsigned int efx_reset_type_max; |
606 | #define RESET_TYPE(type) \ | |
607 | STRING_TABLE_LOOKUP(type, efx_reset_type) | |
3273c2e8 | 608 | |
e5fbd977 JC |
609 | void efx_get_udp_tunnel_type_name(u16 type, char *buf, size_t buflen); |
610 | ||
8ceee660 BH |
611 | enum efx_int_mode { |
612 | /* Be careful if altering to correct macro below */ | |
613 | EFX_INT_MODE_MSIX = 0, | |
614 | EFX_INT_MODE_MSI = 1, | |
615 | EFX_INT_MODE_LEGACY = 2, | |
616 | EFX_INT_MODE_MAX /* Insert any new items before this */ | |
617 | }; | |
618 | #define EFX_INT_MODE_USE_MSI(x) (((x)->interrupt_mode) <= EFX_INT_MODE_MSI) | |
619 | ||
8ceee660 | 620 | enum nic_state { |
f16aeea0 BH |
621 | STATE_UNINIT = 0, /* device being probed/removed or is frozen */ |
622 | STATE_READY = 1, /* hardware ready and netdev registered */ | |
623 | STATE_DISABLED = 2, /* device disabled due to hardware errors */ | |
626950db | 624 | STATE_RECOVERY = 3, /* device recovering from PCI error */ |
8ceee660 BH |
625 | }; |
626 | ||
8ceee660 BH |
627 | /* Forward declaration */ |
628 | struct efx_nic; | |
629 | ||
630 | /* Pseudo bit-mask flow control field */ | |
b5626946 DM |
631 | #define EFX_FC_RX FLOW_CTRL_RX |
632 | #define EFX_FC_TX FLOW_CTRL_TX | |
633 | #define EFX_FC_AUTO 4 | |
8ceee660 | 634 | |
eb50c0d6 BH |
635 | /** |
636 | * struct efx_link_state - Current state of the link | |
637 | * @up: Link is up | |
638 | * @fd: Link is full-duplex | |
639 | * @fc: Actual flow control flags | |
640 | * @speed: Link speed (Mbps) | |
641 | */ | |
642 | struct efx_link_state { | |
643 | bool up; | |
644 | bool fd; | |
b5626946 | 645 | u8 fc; |
eb50c0d6 BH |
646 | unsigned int speed; |
647 | }; | |
648 | ||
fdaa9aed SH |
649 | static inline bool efx_link_state_equal(const struct efx_link_state *left, |
650 | const struct efx_link_state *right) | |
651 | { | |
652 | return left->up == right->up && left->fd == right->fd && | |
653 | left->fc == right->fc && left->speed == right->speed; | |
654 | } | |
655 | ||
8ceee660 BH |
656 | /** |
657 | * struct efx_phy_operations - Efx PHY operations table | |
c1c4f453 BH |
658 | * @probe: Probe PHY and initialise efx->mdio.mode_support, efx->mdio.mmds, |
659 | * efx->loopback_modes. | |
8ceee660 BH |
660 | * @init: Initialise PHY |
661 | * @fini: Shut down PHY | |
662 | * @reconfigure: Reconfigure PHY (e.g. for new link parameters) | |
fdaa9aed SH |
663 | * @poll: Update @link_state and report whether it changed. |
664 | * Serialised by the mac_lock. | |
7cafe8f8 PR |
665 | * @get_link_ksettings: Get ethtool settings. Serialised by the mac_lock. |
666 | * @set_link_ksettings: Set ethtool settings. Serialised by the mac_lock. | |
7f61e6c6 EC |
667 | * @get_fecparam: Get Forward Error Correction settings. Serialised by mac_lock. |
668 | * @set_fecparam: Set Forward Error Correction settings. Serialised by mac_lock. | |
af4ad9bc | 669 | * @set_npage_adv: Set abilities advertised in (Extended) Next Page |
04cc8cac | 670 | * (only needed where AN bit is set in mmds) |
4f16c073 | 671 | * @test_alive: Test that PHY is 'alive' (online) |
c1c4f453 | 672 | * @test_name: Get the name of a PHY-specific test/result |
4f16c073 | 673 | * @run_tests: Run tests and record results as appropriate (offline). |
1796721a | 674 | * Flags are the ethtool tests flags. |
8ceee660 BH |
675 | */ |
676 | struct efx_phy_operations { | |
c1c4f453 | 677 | int (*probe) (struct efx_nic *efx); |
8ceee660 BH |
678 | int (*init) (struct efx_nic *efx); |
679 | void (*fini) (struct efx_nic *efx); | |
ff3b00a0 | 680 | void (*remove) (struct efx_nic *efx); |
d3245b28 | 681 | int (*reconfigure) (struct efx_nic *efx); |
fdaa9aed | 682 | bool (*poll) (struct efx_nic *efx); |
7cafe8f8 PR |
683 | void (*get_link_ksettings)(struct efx_nic *efx, |
684 | struct ethtool_link_ksettings *cmd); | |
685 | int (*set_link_ksettings)(struct efx_nic *efx, | |
686 | const struct ethtool_link_ksettings *cmd); | |
7f61e6c6 EC |
687 | int (*get_fecparam)(struct efx_nic *efx, struct ethtool_fecparam *fec); |
688 | int (*set_fecparam)(struct efx_nic *efx, | |
689 | const struct ethtool_fecparam *fec); | |
af4ad9bc | 690 | void (*set_npage_adv) (struct efx_nic *efx, u32); |
4f16c073 | 691 | int (*test_alive) (struct efx_nic *efx); |
c1c4f453 | 692 | const char *(*test_name) (struct efx_nic *efx, unsigned int index); |
1796721a | 693 | int (*run_tests) (struct efx_nic *efx, int *results, unsigned flags); |
c087bd2c SH |
694 | int (*get_module_eeprom) (struct efx_nic *efx, |
695 | struct ethtool_eeprom *ee, | |
696 | u8 *data); | |
697 | int (*get_module_info) (struct efx_nic *efx, | |
698 | struct ethtool_modinfo *modinfo); | |
8ceee660 BH |
699 | }; |
700 | ||
f8b87c17 | 701 | /** |
49ce9c2c | 702 | * enum efx_phy_mode - PHY operating mode flags |
f8b87c17 BH |
703 | * @PHY_MODE_NORMAL: on and should pass traffic |
704 | * @PHY_MODE_TX_DISABLED: on with TX disabled | |
3e133c44 BH |
705 | * @PHY_MODE_LOW_POWER: set to low power through MDIO |
706 | * @PHY_MODE_OFF: switched off through external control | |
f8b87c17 BH |
707 | * @PHY_MODE_SPECIAL: on but will not pass traffic |
708 | */ | |
709 | enum efx_phy_mode { | |
710 | PHY_MODE_NORMAL = 0, | |
711 | PHY_MODE_TX_DISABLED = 1, | |
3e133c44 BH |
712 | PHY_MODE_LOW_POWER = 2, |
713 | PHY_MODE_OFF = 4, | |
f8b87c17 BH |
714 | PHY_MODE_SPECIAL = 8, |
715 | }; | |
716 | ||
717 | static inline bool efx_phy_mode_disabled(enum efx_phy_mode mode) | |
718 | { | |
8c8661e4 | 719 | return !!(mode & ~PHY_MODE_TX_DISABLED); |
f8b87c17 BH |
720 | } |
721 | ||
cd0ecc9a BH |
722 | /** |
723 | * struct efx_hw_stat_desc - Description of a hardware statistic | |
724 | * @name: Name of the statistic as visible through ethtool, or %NULL if | |
725 | * it should not be exposed | |
726 | * @dma_width: Width in bits (0 for non-DMA statistics) | |
727 | * @offset: Offset within stats (ignored for non-DMA statistics) | |
8ceee660 | 728 | */ |
cd0ecc9a BH |
729 | struct efx_hw_stat_desc { |
730 | const char *name; | |
731 | u16 dma_width; | |
732 | u16 offset; | |
8ceee660 BH |
733 | }; |
734 | ||
735 | /* Number of bits used in a multicast filter hash address */ | |
736 | #define EFX_MCAST_HASH_BITS 8 | |
737 | ||
738 | /* Number of (single-bit) entries in a multicast filter hash */ | |
739 | #define EFX_MCAST_HASH_ENTRIES (1 << EFX_MCAST_HASH_BITS) | |
740 | ||
741 | /* An Efx multicast filter hash */ | |
742 | union efx_multicast_hash { | |
743 | u8 byte[EFX_MCAST_HASH_ENTRIES / 8]; | |
744 | efx_oword_t oword[EFX_MCAST_HASH_ENTRIES / sizeof(efx_oword_t) / 8]; | |
745 | }; | |
746 | ||
cd2d5b52 | 747 | struct vfdi_status; |
64eebcfd | 748 | |
42356d9a | 749 | /* The reserved RSS context value */ |
f7226e0f | 750 | #define EFX_MCDI_RSS_CONTEXT_INVALID 0xffffffff |
42356d9a EC |
751 | /** |
752 | * struct efx_rss_context - A user-defined RSS context for filtering | |
753 | * @list: node of linked list on which this struct is stored | |
754 | * @context_id: the RSS_CONTEXT_ID returned by MC firmware, or | |
f7226e0f AM |
755 | * %EFX_MCDI_RSS_CONTEXT_INVALID if this context is not present on the NIC. |
756 | * For Siena, 0 if RSS is active, else %EFX_MCDI_RSS_CONTEXT_INVALID. | |
42356d9a EC |
757 | * @user_id: the rss_context ID exposed to userspace over ethtool. |
758 | * @rx_hash_udp_4tuple: UDP 4-tuple hashing enabled | |
759 | * @rx_hash_key: Toeplitz hash key for this RSS context | |
760 | * @indir_table: Indirection table for this RSS context | |
761 | */ | |
762 | struct efx_rss_context { | |
763 | struct list_head list; | |
764 | u32 context_id; | |
765 | u32 user_id; | |
766 | bool rx_hash_udp_4tuple; | |
767 | u8 rx_hash_key[40]; | |
768 | u32 rx_indir_table[128]; | |
769 | }; | |
770 | ||
f993740e | 771 | #ifdef CONFIG_RFS_ACCEL |
f8d62037 EC |
772 | /* Order of these is important, since filter_id >= %EFX_ARFS_FILTER_ID_PENDING |
773 | * is used to test if filter does or will exist. | |
774 | */ | |
775 | #define EFX_ARFS_FILTER_ID_PENDING -1 | |
776 | #define EFX_ARFS_FILTER_ID_ERROR -2 | |
777 | #define EFX_ARFS_FILTER_ID_REMOVING -3 | |
778 | /** | |
779 | * struct efx_arfs_rule - record of an ARFS filter and its IDs | |
780 | * @node: linkage into hash table | |
781 | * @spec: details of the filter (used as key for hash table). Use efx->type to | |
782 | * determine which member to use. | |
783 | * @rxq_index: channel to which the filter will steer traffic. | |
784 | * @arfs_id: filter ID which was returned to ARFS | |
785 | * @filter_id: index in software filter table. May be | |
786 | * %EFX_ARFS_FILTER_ID_PENDING if filter was not inserted yet, | |
787 | * %EFX_ARFS_FILTER_ID_ERROR if filter insertion failed, or | |
788 | * %EFX_ARFS_FILTER_ID_REMOVING if expiry is currently removing the filter. | |
789 | */ | |
790 | struct efx_arfs_rule { | |
791 | struct hlist_node node; | |
792 | struct efx_filter_spec spec; | |
793 | u16 rxq_index; | |
794 | u16 arfs_id; | |
795 | s32 filter_id; | |
796 | }; | |
797 | ||
798 | /* Size chosen so that the table is one page (4kB) */ | |
799 | #define EFX_ARFS_HASH_TABLE_SIZE 512 | |
800 | ||
f993740e EC |
801 | /** |
802 | * struct efx_async_filter_insertion - Request to asynchronously insert a filter | |
803 | * @net_dev: Reference to the netdevice | |
804 | * @spec: The filter to insert | |
805 | * @work: Workitem for this request | |
806 | * @rxq_index: Identifies the channel for which this request was made | |
807 | * @flow_id: Identifies the kernel-side flow for which this request was made | |
808 | */ | |
809 | struct efx_async_filter_insertion { | |
810 | struct net_device *net_dev; | |
811 | struct efx_filter_spec spec; | |
812 | struct work_struct work; | |
813 | u16 rxq_index; | |
814 | u32 flow_id; | |
815 | }; | |
816 | ||
817 | /* Maximum number of ARFS workitems that may be in flight on an efx_nic */ | |
818 | #define EFX_RPS_MAX_IN_FLIGHT 8 | |
819 | #endif /* CONFIG_RFS_ACCEL */ | |
820 | ||
8ceee660 BH |
821 | /** |
822 | * struct efx_nic - an Efx NIC | |
823 | * @name: Device name (net device name or bus id before net device registered) | |
824 | * @pci_dev: The PCI device | |
0bcf4a64 BH |
825 | * @node: List node for maintaning primary/secondary function lists |
826 | * @primary: &struct efx_nic instance for the primary function of this | |
827 | * controller. May be the same structure, and may be %NULL if no | |
828 | * primary function is bound. Serialised by rtnl_lock. | |
829 | * @secondary_list: List of &struct efx_nic instances for the secondary PCI | |
830 | * functions of the controller, if this is for the primary function. | |
831 | * Serialised by rtnl_lock. | |
8ceee660 BH |
832 | * @type: Controller type attributes |
833 | * @legacy_irq: IRQ number | |
8d9853d9 BH |
834 | * @workqueue: Workqueue for port reconfigures and the HW monitor. |
835 | * Work items do not hold and must not acquire RTNL. | |
6977dc63 | 836 | * @workqueue_name: Name of workqueue |
8ceee660 | 837 | * @reset_work: Scheduled reset workitem |
8ceee660 BH |
838 | * @membase_phys: Memory BAR value as physical address |
839 | * @membase: Memory BAR value | |
71827443 | 840 | * @vi_stride: step between per-VI registers / memory regions |
8ceee660 | 841 | * @interrupt_mode: Interrupt mode |
cc180b69 | 842 | * @timer_quantum_ns: Interrupt timer quantum, in nanoseconds |
d95e329a | 843 | * @timer_max_ns: Interrupt timer maximum value, in nanoseconds |
6fb70fd1 | 844 | * @irq_rx_adaptive: Adaptive IRQ moderation enabled for RX event queues |
539de7c5 BK |
845 | * @irq_rx_mod_step_us: Step size for IRQ moderation for RX event queues |
846 | * @irq_rx_moderation_us: IRQ moderation time for RX event queues | |
62776d03 | 847 | * @msg_enable: Log message enable flags |
f16aeea0 | 848 | * @state: Device state number (%STATE_*). Serialised by the rtnl_lock. |
a7d529ae | 849 | * @reset_pending: Bitmask for pending resets |
8ceee660 BH |
850 | * @tx_queue: TX DMA queues |
851 | * @rx_queue: RX DMA queues | |
852 | * @channel: Channels | |
d8291187 | 853 | * @msi_context: Context for each MSI |
7f967c01 BH |
854 | * @extra_channel_types: Types of extra (non-traffic) channels that |
855 | * should be allocated for this NIC | |
3990a8ff CM |
856 | * @xdp_tx_queue_count: Number of entries in %xdp_tx_queues. |
857 | * @xdp_tx_queues: Array of pointers to tx queues used for XDP transmit. | |
ecc910f5 SH |
858 | * @rxq_entries: Size of receive queues requested by user. |
859 | * @txq_entries: Size of transmit queues requested by user. | |
14bf718f BH |
860 | * @txq_stop_thresh: TX queue fill level at or above which we stop it. |
861 | * @txq_wake_thresh: TX queue fill level at or below which we wake it. | |
28e47c49 BH |
862 | * @tx_dc_base: Base qword address in SRAM of TX queue descriptor caches |
863 | * @rx_dc_base: Base qword address in SRAM of RX queue descriptor caches | |
864 | * @sram_lim_qw: Qword address limit of SRAM | |
0484e0db | 865 | * @next_buffer_table: First available buffer table id |
28b581ab | 866 | * @n_channels: Number of channels in use |
a4900ac9 BH |
867 | * @n_rx_channels: Number of channels used for RX (= number of RX queues) |
868 | * @n_tx_channels: Number of channels used for TX | |
2935e3c3 | 869 | * @n_extra_tx_channels: Number of extra channels with TX queues |
3990a8ff CM |
870 | * @n_xdp_channels: Number of channels used for XDP TX |
871 | * @xdp_channel_offset: Offset of zeroth channel used for XPD TX. | |
872 | * @xdp_tx_per_channel: Max number of TX queues on an XDP TX channel. | |
2ec03014 AR |
873 | * @rx_ip_align: RX DMA address offset to have IP header aligned in |
874 | * in accordance with NET_IP_ALIGN | |
272baeeb | 875 | * @rx_dma_len: Current maximum RX DMA length |
8ceee660 | 876 | * @rx_buffer_order: Order (log2) of number of pages for each RX buffer |
85740cdf BH |
877 | * @rx_buffer_truesize: Amortised allocation size of an RX buffer, |
878 | * for use in sk_buff::truesize | |
43a3739d JC |
879 | * @rx_prefix_size: Size of RX prefix before packet data |
880 | * @rx_packet_hash_offset: Offset of RX flow hash from start of packet data | |
881 | * (valid only if @rx_prefix_size != 0; always negative) | |
3dced740 BH |
882 | * @rx_packet_len_offset: Offset of RX packet length from start of packet data |
883 | * (valid only for NICs that set %EFX_RX_PKT_PREFIX_LEN; always negative) | |
bd9a265d JC |
884 | * @rx_packet_ts_offset: Offset of timestamp from start of packet data |
885 | * (valid only if channel->sync_timestamps_enabled; always negative) | |
85740cdf | 886 | * @rx_scatter: Scatter mode enabled for receives |
42356d9a EC |
887 | * @rss_context: Main RSS context. Its @list member is the head of the list of |
888 | * RSS contexts created by user requests | |
e0a65e3c | 889 | * @rss_lock: Protects custom RSS context software state in @rss_context.list |
dfcabb07 | 890 | * @vport_id: The function's vport ID, only relevant for PFs |
0484e0db BH |
891 | * @int_error_count: Number of internal errors seen recently |
892 | * @int_error_expire: Time at which error count will be expired | |
d8291187 BH |
893 | * @irq_soft_enabled: Are IRQs soft-enabled? If not, IRQ handler will |
894 | * acknowledge but do nothing else. | |
8ceee660 | 895 | * @irq_status: Interrupt status buffer |
c28884c5 | 896 | * @irq_zero_count: Number of legacy IRQs seen with queue flags == 0 |
1646a6f3 | 897 | * @irq_level: IRQ level/index for IRQs not triggered by an event queue |
dd40781e | 898 | * @selftest_work: Work item for asynchronous self-test |
76884835 | 899 | * @mtd_list: List of MTDs attached to the NIC |
25985edc | 900 | * @nic_data: Hardware dependent state |
f3ad5003 | 901 | * @mcdi: Management-Controller-to-Driver Interface state |
8c8661e4 | 902 | * @mac_lock: MAC access lock. Protects @port_enabled, @phy_mode, |
e4abce85 | 903 | * efx_monitor() and efx_reconfigure_port() |
8ceee660 | 904 | * @port_enabled: Port enabled indicator. |
fdaa9aed SH |
905 | * Serialises efx_stop_all(), efx_start_all(), efx_monitor() and |
906 | * efx_mac_work() with kernel interfaces. Safe to read under any | |
907 | * one of the rtnl_lock, mac_lock, or netif_tx_lock, but all three must | |
908 | * be held to modify it. | |
8ceee660 BH |
909 | * @port_initialized: Port initialized? |
910 | * @net_dev: Operating system network device. Consider holding the rtnl lock | |
ebfcd0fd | 911 | * @fixed_features: Features which cannot be turned off |
c1be4821 EC |
912 | * @num_mac_stats: Number of MAC stats reported by firmware (MAC_STATS_NUM_STATS |
913 | * field of %MC_CMD_GET_CAPABILITIES_V4 response, or %MC_CMD_MAC_NSTATS) | |
8ceee660 | 914 | * @stats_buffer: DMA buffer for statistics |
8ceee660 | 915 | * @phy_type: PHY type |
8ceee660 BH |
916 | * @phy_op: PHY interface |
917 | * @phy_data: PHY private data (including PHY-specific stats) | |
68e7f45e | 918 | * @mdio: PHY MDIO interface |
8880f4ec | 919 | * @mdio_bus: PHY MDIO bus ID (only used by Siena) |
8c8661e4 | 920 | * @phy_mode: PHY operating mode. Serialised by @mac_lock. |
d3245b28 | 921 | * @link_advertising: Autonegotiation advertising flags |
7f61e6c6 EC |
922 | * @fec_config: Forward Error Correction configuration flags. For bit positions |
923 | * see &enum ethtool_fec_config_bits. | |
eb50c0d6 | 924 | * @link_state: Current state of the link |
8ceee660 | 925 | * @n_link_state_changes: Number of times the link has changed state |
964e6135 BH |
926 | * @unicast_filter: Flag for Falcon-arch simple unicast filter. |
927 | * Protected by @mac_lock. | |
928 | * @multicast_hash: Multicast hash table for Falcon-arch. | |
929 | * Protected by @mac_lock. | |
04cc8cac | 930 | * @wanted_fc: Wanted flow control flags |
a606f432 SH |
931 | * @fc_disable: When non-zero flow control is disabled. Typically used to |
932 | * ensure that network back pressure doesn't delay dma queue flushes. | |
933 | * Serialised by the rtnl lock. | |
8be4f3e6 | 934 | * @mac_work: Work item for changing MAC promiscuity and multicast hash |
3273c2e8 BH |
935 | * @loopback_mode: Loopback status |
936 | * @loopback_modes: Supported loopback mode bitmask | |
937 | * @loopback_selftest: Offline self-test private state | |
eb9a36be | 938 | * @xdp_prog: Current XDP programme for this interface |
c2bebe37 | 939 | * @filter_sem: Filter table rw_semaphore, protects existence of @filter_state |
6d661cec | 940 | * @filter_state: Architecture-dependent filter table state |
3af0f342 | 941 | * @rps_mutex: Protects RPS state of all channels |
f993740e EC |
942 | * @rps_slot_map: bitmap of in-flight entries in @rps_slot |
943 | * @rps_slot: array of ARFS insertion requests for efx_filter_rfs_work() | |
f8d62037 EC |
944 | * @rps_hash_lock: Protects ARFS filter mapping state (@rps_hash_table and |
945 | * @rps_next_id). | |
946 | * @rps_hash_table: Mapping between ARFS filters and their various IDs | |
947 | * @rps_next_id: next arfs_id for an ARFS filter | |
3881d8ab | 948 | * @active_queues: Count of RX and TX queues that haven't been flushed and drained. |
9f2cb71c BH |
949 | * @rxq_flush_pending: Count of number of receive queues that need to be flushed. |
950 | * Decremented when the efx_flush_rx_queue() is called. | |
951 | * @rxq_flush_outstanding: Count of number of RX flushes started but not yet | |
952 | * completed (either success or failure). Not used when MCDI is used to | |
953 | * flush receive queues. | |
954 | * @flush_wq: wait queue used by efx_nic_flush_queues() to wait for flush completions. | |
cd2d5b52 BH |
955 | * @vf_count: Number of VFs intended to be enabled. |
956 | * @vf_init_count: Number of VFs that have been fully initialised. | |
957 | * @vi_scale: log2 number of vnics per VF. | |
7c236c43 | 958 | * @ptp_data: PTP state data |
acaef3c1 | 959 | * @ptp_warned: has this NIC seen and warned about unexpected PTP events? |
ef215e64 | 960 | * @vpd_sn: Serial number read from VPD |
eb9a36be CM |
961 | * @xdp_rxq_info_failed: Have any of the rx queues failed to initialise their |
962 | * xdp_rxq_info structures? | |
ab28c12a BH |
963 | * @monitor_work: Hardware monitor workitem |
964 | * @biu_lock: BIU (bus interface unit) lock | |
1646a6f3 BH |
965 | * @last_irq_cpu: Last CPU to handle a possible test interrupt. This |
966 | * field is used by efx_test_interrupts() to verify that an | |
967 | * interrupt has occurred. | |
cd0ecc9a BH |
968 | * @stats_lock: Statistics update lock. Must be held when calling |
969 | * efx_nic_type::{update,start,stop}_stats. | |
e4d112e4 | 970 | * @n_rx_noskb_drops: Count of RX packets dropped due to failure to allocate an skb |
8ceee660 | 971 | * |
754c653a | 972 | * This is stored in the private area of the &struct net_device. |
8ceee660 BH |
973 | */ |
974 | struct efx_nic { | |
ab28c12a BH |
975 | /* The following fields should be written very rarely */ |
976 | ||
8ceee660 | 977 | char name[IFNAMSIZ]; |
0bcf4a64 BH |
978 | struct list_head node; |
979 | struct efx_nic *primary; | |
980 | struct list_head secondary_list; | |
8ceee660 | 981 | struct pci_dev *pci_dev; |
6602041b | 982 | unsigned int port_num; |
8ceee660 BH |
983 | const struct efx_nic_type *type; |
984 | int legacy_irq; | |
b28405b0 | 985 | bool eeh_disabled_legacy_irq; |
8ceee660 | 986 | struct workqueue_struct *workqueue; |
6977dc63 | 987 | char workqueue_name[16]; |
8ceee660 | 988 | struct work_struct reset_work; |
086ea356 | 989 | resource_size_t membase_phys; |
8ceee660 | 990 | void __iomem *membase; |
ab28c12a | 991 | |
71827443 EC |
992 | unsigned int vi_stride; |
993 | ||
8ceee660 | 994 | enum efx_int_mode interrupt_mode; |
cc180b69 | 995 | unsigned int timer_quantum_ns; |
d95e329a | 996 | unsigned int timer_max_ns; |
6fb70fd1 | 997 | bool irq_rx_adaptive; |
539de7c5 BK |
998 | unsigned int irq_mod_step_us; |
999 | unsigned int irq_rx_moderation_us; | |
62776d03 | 1000 | u32 msg_enable; |
8ceee660 | 1001 | |
8ceee660 | 1002 | enum nic_state state; |
a7d529ae | 1003 | unsigned long reset_pending; |
8ceee660 | 1004 | |
8313aca3 | 1005 | struct efx_channel *channel[EFX_MAX_CHANNELS]; |
d8291187 | 1006 | struct efx_msi_context msi_context[EFX_MAX_CHANNELS]; |
7f967c01 BH |
1007 | const struct efx_channel_type * |
1008 | extra_channel_type[EFX_MAX_EXTRA_CHANNELS]; | |
8ceee660 | 1009 | |
3990a8ff CM |
1010 | unsigned int xdp_tx_queue_count; |
1011 | struct efx_tx_queue **xdp_tx_queues; | |
1012 | ||
ecc910f5 SH |
1013 | unsigned rxq_entries; |
1014 | unsigned txq_entries; | |
14bf718f BH |
1015 | unsigned int txq_stop_thresh; |
1016 | unsigned int txq_wake_thresh; | |
1017 | ||
28e47c49 BH |
1018 | unsigned tx_dc_base; |
1019 | unsigned rx_dc_base; | |
1020 | unsigned sram_lim_qw; | |
0484e0db | 1021 | unsigned next_buffer_table; |
b105798f BH |
1022 | |
1023 | unsigned int max_channels; | |
b0fbdae1 | 1024 | unsigned int max_tx_channels; |
a4900ac9 BH |
1025 | unsigned n_channels; |
1026 | unsigned n_rx_channels; | |
cd2d5b52 | 1027 | unsigned rss_spread; |
97653431 | 1028 | unsigned tx_channel_offset; |
a4900ac9 | 1029 | unsigned n_tx_channels; |
2935e3c3 | 1030 | unsigned n_extra_tx_channels; |
3990a8ff CM |
1031 | unsigned int n_xdp_channels; |
1032 | unsigned int xdp_channel_offset; | |
1033 | unsigned int xdp_tx_per_channel; | |
2ec03014 | 1034 | unsigned int rx_ip_align; |
272baeeb | 1035 | unsigned int rx_dma_len; |
8ceee660 | 1036 | unsigned int rx_buffer_order; |
85740cdf | 1037 | unsigned int rx_buffer_truesize; |
1648a23f | 1038 | unsigned int rx_page_buf_step; |
2768935a | 1039 | unsigned int rx_bufs_per_page; |
1648a23f | 1040 | unsigned int rx_pages_per_batch; |
43a3739d JC |
1041 | unsigned int rx_prefix_size; |
1042 | int rx_packet_hash_offset; | |
3dced740 | 1043 | int rx_packet_len_offset; |
bd9a265d | 1044 | int rx_packet_ts_offset; |
85740cdf | 1045 | bool rx_scatter; |
42356d9a | 1046 | struct efx_rss_context rss_context; |
e0a65e3c | 1047 | struct mutex rss_lock; |
dfcabb07 | 1048 | u32 vport_id; |
8ceee660 | 1049 | |
0484e0db BH |
1050 | unsigned int_error_count; |
1051 | unsigned long int_error_expire; | |
1052 | ||
d8291187 | 1053 | bool irq_soft_enabled; |
8ceee660 | 1054 | struct efx_buffer irq_status; |
c28884c5 | 1055 | unsigned irq_zero_count; |
1646a6f3 | 1056 | unsigned irq_level; |
dd40781e | 1057 | struct delayed_work selftest_work; |
8ceee660 | 1058 | |
76884835 BH |
1059 | #ifdef CONFIG_SFC_MTD |
1060 | struct list_head mtd_list; | |
1061 | #endif | |
4a5b504d | 1062 | |
8880f4ec | 1063 | void *nic_data; |
f3ad5003 | 1064 | struct efx_mcdi_data *mcdi; |
8ceee660 BH |
1065 | |
1066 | struct mutex mac_lock; | |
766ca0fa | 1067 | struct work_struct mac_work; |
dc8cfa55 | 1068 | bool port_enabled; |
8ceee660 | 1069 | |
74cd60a4 | 1070 | bool mc_bist_for_other_fn; |
dc8cfa55 | 1071 | bool port_initialized; |
8ceee660 | 1072 | struct net_device *net_dev; |
8ceee660 | 1073 | |
ebfcd0fd AR |
1074 | netdev_features_t fixed_features; |
1075 | ||
c1be4821 | 1076 | u16 num_mac_stats; |
8ceee660 | 1077 | struct efx_buffer stats_buffer; |
f8f3b5ae JC |
1078 | u64 rx_nodesc_drops_total; |
1079 | u64 rx_nodesc_drops_while_down; | |
1080 | bool rx_nodesc_drops_prev_state; | |
8ceee660 | 1081 | |
c1c4f453 | 1082 | unsigned int phy_type; |
6c8c2513 | 1083 | const struct efx_phy_operations *phy_op; |
8ceee660 | 1084 | void *phy_data; |
68e7f45e | 1085 | struct mdio_if_info mdio; |
8880f4ec | 1086 | unsigned int mdio_bus; |
f8b87c17 | 1087 | enum efx_phy_mode phy_mode; |
8ceee660 | 1088 | |
c2ab85d2 | 1089 | __ETHTOOL_DECLARE_LINK_MODE_MASK(link_advertising); |
7f61e6c6 | 1090 | u32 fec_config; |
eb50c0d6 | 1091 | struct efx_link_state link_state; |
8ceee660 BH |
1092 | unsigned int n_link_state_changes; |
1093 | ||
964e6135 | 1094 | bool unicast_filter; |
8ceee660 | 1095 | union efx_multicast_hash multicast_hash; |
b5626946 | 1096 | u8 wanted_fc; |
a606f432 | 1097 | unsigned fc_disable; |
8ceee660 BH |
1098 | |
1099 | atomic_t rx_reset; | |
3273c2e8 | 1100 | enum efx_loopback_mode loopback_mode; |
e58f69f4 | 1101 | u64 loopback_modes; |
3273c2e8 BH |
1102 | |
1103 | void *loopback_selftest; | |
eb9a36be CM |
1104 | /* We access loopback_selftest immediately before running XDP, |
1105 | * so we want them next to each other. | |
1106 | */ | |
1107 | struct bpf_prog __rcu *xdp_prog; | |
64eebcfd | 1108 | |
0d322413 | 1109 | struct rw_semaphore filter_sem; |
6d661cec BH |
1110 | void *filter_state; |
1111 | #ifdef CONFIG_RFS_ACCEL | |
3af0f342 | 1112 | struct mutex rps_mutex; |
f993740e EC |
1113 | unsigned long rps_slot_map; |
1114 | struct efx_async_filter_insertion rps_slot[EFX_RPS_MAX_IN_FLIGHT]; | |
f8d62037 EC |
1115 | spinlock_t rps_hash_lock; |
1116 | struct hlist_head *rps_hash_table; | |
1117 | u32 rps_next_id; | |
6d661cec | 1118 | #endif |
ab28c12a | 1119 | |
3881d8ab | 1120 | atomic_t active_queues; |
9f2cb71c BH |
1121 | atomic_t rxq_flush_pending; |
1122 | atomic_t rxq_flush_outstanding; | |
1123 | wait_queue_head_t flush_wq; | |
1124 | ||
cd2d5b52 | 1125 | #ifdef CONFIG_SFC_SRIOV |
cd2d5b52 BH |
1126 | unsigned vf_count; |
1127 | unsigned vf_init_count; | |
1128 | unsigned vi_scale; | |
cd2d5b52 BH |
1129 | #endif |
1130 | ||
7c236c43 | 1131 | struct efx_ptp_data *ptp_data; |
acaef3c1 | 1132 | bool ptp_warned; |
7c236c43 | 1133 | |
ef215e64 | 1134 | char *vpd_sn; |
eb9a36be | 1135 | bool xdp_rxq_info_failed; |
ef215e64 | 1136 | |
ab28c12a BH |
1137 | /* The following fields may be written more often */ |
1138 | ||
1139 | struct delayed_work monitor_work ____cacheline_aligned_in_smp; | |
1140 | spinlock_t biu_lock; | |
1646a6f3 | 1141 | int last_irq_cpu; |
ab28c12a | 1142 | spinlock_t stats_lock; |
e4d112e4 | 1143 | atomic_t n_rx_noskb_drops; |
8ceee660 BH |
1144 | }; |
1145 | ||
55668611 BH |
1146 | static inline int efx_dev_registered(struct efx_nic *efx) |
1147 | { | |
1148 | return efx->net_dev->reg_state == NETREG_REGISTERED; | |
1149 | } | |
1150 | ||
8880f4ec BH |
1151 | static inline unsigned int efx_port_num(struct efx_nic *efx) |
1152 | { | |
6602041b | 1153 | return efx->port_num; |
8880f4ec BH |
1154 | } |
1155 | ||
45a3fd55 BH |
1156 | struct efx_mtd_partition { |
1157 | struct list_head node; | |
1158 | struct mtd_info mtd; | |
1159 | const char *dev_type_name; | |
1160 | const char *type_name; | |
1161 | char name[IFNAMSIZ + 20]; | |
1162 | }; | |
1163 | ||
e5fbd977 JC |
1164 | struct efx_udp_tunnel { |
1165 | u16 type; /* TUNNEL_ENCAP_UDP_PORT_ENTRY_foo, see mcdi_pcol.h */ | |
1166 | __be16 port; | |
1167 | /* Count of repeated adds of the same port. Used only inside the list, | |
1168 | * not in request arguments. | |
1169 | */ | |
1170 | u16 count; | |
1171 | }; | |
1172 | ||
8ceee660 BH |
1173 | /** |
1174 | * struct efx_nic_type - Efx device type definition | |
02246a7f | 1175 | * @mem_bar: Get the memory BAR |
b105798f | 1176 | * @mem_map_size: Get memory BAR mapped size |
ef2b90ee BH |
1177 | * @probe: Probe the controller |
1178 | * @remove: Free resources allocated by probe() | |
1179 | * @init: Initialise the controller | |
28e47c49 BH |
1180 | * @dimension_resources: Dimension controller resources (buffer table, |
1181 | * and VIs once the available interrupt resources are clear) | |
ef2b90ee BH |
1182 | * @fini: Shut down the controller |
1183 | * @monitor: Periodic function for polling link state and hardware monitor | |
0e2a9c7c BH |
1184 | * @map_reset_reason: Map ethtool reset reason to a reset method |
1185 | * @map_reset_flags: Map ethtool reset flags to a reset method, if possible | |
ef2b90ee BH |
1186 | * @reset: Reset the controller hardware and possibly the PHY. This will |
1187 | * be called while the controller is uninitialised. | |
1188 | * @probe_port: Probe the MAC and PHY | |
1189 | * @remove_port: Free resources allocated by probe_port() | |
40641ed9 | 1190 | * @handle_global_event: Handle a "global" event (may be %NULL) |
e42c3d85 | 1191 | * @fini_dmaq: Flush and finalise DMA queues (RX and TX queues) |
ef2b90ee | 1192 | * @prepare_flush: Prepare the hardware for flushing the DMA queues |
e42c3d85 BH |
1193 | * (for Falcon architecture) |
1194 | * @finish_flush: Clean up after flushing the DMA queues (for Falcon | |
1195 | * architecture) | |
e283546c EC |
1196 | * @prepare_flr: Prepare for an FLR |
1197 | * @finish_flr: Clean up after an FLR | |
cd0ecc9a BH |
1198 | * @describe_stats: Describe statistics for ethtool |
1199 | * @update_stats: Update statistics not provided by event handling. | |
1200 | * Either argument may be %NULL. | |
ef2b90ee | 1201 | * @start_stats: Start the regular fetching of statistics |
f8f3b5ae | 1202 | * @pull_stats: Pull stats from the NIC and wait until they arrive. |
ef2b90ee | 1203 | * @stop_stats: Stop the regular fetching of statistics |
06629f07 | 1204 | * @set_id_led: Set state of identifying LED or revert to automatic function |
ef2b90ee | 1205 | * @push_irq_moderation: Apply interrupt moderation value |
d3245b28 | 1206 | * @reconfigure_port: Push loopback/power/txdis changes to the MAC and PHY |
9dd3a13b | 1207 | * @prepare_enable_fc_tx: Prepare MAC to enable pause frame TX (may be %NULL) |
30b81cda BH |
1208 | * @reconfigure_mac: Push MAC address, MTU, flow control and filter settings |
1209 | * to the hardware. Serialised by the mac_lock. | |
710b208d | 1210 | * @check_mac_fault: Check MAC fault state. True if fault present. |
89c758fa BH |
1211 | * @get_wol: Get WoL configuration from driver state |
1212 | * @set_wol: Push WoL configuration to the NIC | |
1213 | * @resume_wol: Synchronise WoL state between driver and MC (e.g. after resume) | |
86094f7f | 1214 | * @test_chip: Test registers. May use efx_farch_test_registers(), and is |
d4f2cecc | 1215 | * expected to reset the NIC. |
0aa3fbaa | 1216 | * @test_nvram: Test validity of NVRAM contents |
f3ad5003 BH |
1217 | * @mcdi_request: Send an MCDI request with the given header and SDU. |
1218 | * The SDU length may be any value from 0 up to the protocol- | |
1219 | * defined maximum, but its buffer will be padded to a multiple | |
1220 | * of 4 bytes. | |
1221 | * @mcdi_poll_response: Test whether an MCDI response is available. | |
1222 | * @mcdi_read_response: Read the MCDI response PDU. The offset will | |
1223 | * be a multiple of 4. The length may not be, but the buffer | |
1224 | * will be padded so it is safe to round up. | |
1225 | * @mcdi_poll_reboot: Test whether the MCDI has rebooted. If so, | |
1226 | * return an appropriate error code for aborting any current | |
1227 | * request; otherwise return 0. | |
86094f7f BH |
1228 | * @irq_enable_master: Enable IRQs on the NIC. Each event queue must |
1229 | * be separately enabled after this. | |
1230 | * @irq_test_generate: Generate a test IRQ | |
1231 | * @irq_disable_non_ev: Disable non-event IRQs on the NIC. Each event | |
1232 | * queue must be separately disabled before this. | |
1233 | * @irq_handle_msi: Handle MSI for a channel. The @dev_id argument is | |
1234 | * a pointer to the &struct efx_msi_context for the channel. | |
1235 | * @irq_handle_legacy: Handle legacy interrupt. The @dev_id argument | |
1236 | * is a pointer to the &struct efx_nic. | |
1237 | * @tx_probe: Allocate resources for TX queue | |
1238 | * @tx_init: Initialise TX queue on the NIC | |
1239 | * @tx_remove: Free resources for TX queue | |
1240 | * @tx_write: Write TX descriptors and doorbell | |
d43050c0 | 1241 | * @rx_push_rss_config: Write RSS hash key and indirection table to the NIC |
a707d188 | 1242 | * @rx_pull_rss_config: Read RSS hash key and indirection table back from the NIC |
42356d9a EC |
1243 | * @rx_push_rss_context_config: Write RSS hash key and indirection table for |
1244 | * user RSS context to the NIC | |
1245 | * @rx_pull_rss_context_config: Read RSS hash key and indirection table for user | |
1246 | * RSS context back from the NIC | |
86094f7f BH |
1247 | * @rx_probe: Allocate resources for RX queue |
1248 | * @rx_init: Initialise RX queue on the NIC | |
1249 | * @rx_remove: Free resources for RX queue | |
1250 | * @rx_write: Write RX descriptors and doorbell | |
1251 | * @rx_defer_refill: Generate a refill reminder event | |
1252 | * @ev_probe: Allocate resources for event queue | |
1253 | * @ev_init: Initialise event queue on the NIC | |
1254 | * @ev_fini: Deinitialise event queue on the NIC | |
1255 | * @ev_remove: Free resources for event queue | |
1256 | * @ev_process: Process events for a queue, up to the given NAPI quota | |
1257 | * @ev_read_ack: Acknowledge read events on a queue, rearming its IRQ | |
1258 | * @ev_test_generate: Generate a test event | |
add72477 BH |
1259 | * @filter_table_probe: Probe filter capabilities and set up filter software state |
1260 | * @filter_table_restore: Restore filters removed from hardware | |
1261 | * @filter_table_remove: Remove filters from hardware and tear down software state | |
1262 | * @filter_update_rx_scatter: Update filters after change to rx scatter setting | |
1263 | * @filter_insert: add or replace a filter | |
1264 | * @filter_remove_safe: remove a filter by ID, carefully | |
1265 | * @filter_get_safe: retrieve a filter by ID, carefully | |
fbd79120 BH |
1266 | * @filter_clear_rx: Remove all RX filters whose priority is less than or |
1267 | * equal to the given priority and is not %EFX_FILTER_PRI_AUTO | |
add72477 BH |
1268 | * @filter_count_rx_used: Get the number of filters in use at a given priority |
1269 | * @filter_get_rx_id_limit: Get maximum value of a filter id, plus 1 | |
1270 | * @filter_get_rx_ids: Get list of RX filters at a given priority | |
add72477 BH |
1271 | * @filter_rfs_expire_one: Consider expiring a filter inserted for RFS. |
1272 | * This must check whether the specified table entry is used by RFS | |
1273 | * and that rps_may_expire_flow() returns true for it. | |
45a3fd55 BH |
1274 | * @mtd_probe: Probe and add MTD partitions associated with this net device, |
1275 | * using efx_mtd_add() | |
1276 | * @mtd_rename: Set an MTD partition name using the net device name | |
1277 | * @mtd_read: Read from an MTD partition | |
1278 | * @mtd_erase: Erase part of an MTD partition | |
1279 | * @mtd_write: Write to an MTD partition | |
1280 | * @mtd_sync: Wait for write-back to complete on MTD partition. This | |
1281 | * also notifies the driver that a writer has finished using this | |
1282 | * partition. | |
9ec06595 | 1283 | * @ptp_write_host_time: Send host time to MC as part of sync protocol |
bd9a265d JC |
1284 | * @ptp_set_ts_sync_events: Enable or disable sync events for inline RX |
1285 | * timestamping, possibly only temporarily for the purposes of a reset. | |
9ec06595 DP |
1286 | * @ptp_set_ts_config: Set hardware timestamp configuration. The flags |
1287 | * and tx_type will already have been validated but this operation | |
1288 | * must validate and update rx_filter. | |
08a7b29b | 1289 | * @get_phys_port_id: Get the underlying physical port id. |
910c8789 | 1290 | * @set_mac_address: Set the MAC address of the device |
46d1efd8 EC |
1291 | * @tso_versions: Returns mask of firmware-assisted TSO versions supported. |
1292 | * If %NULL, then device does not support any TSO version. | |
e5fbd977 JC |
1293 | * @udp_tnl_push_ports: Push the list of UDP tunnel ports to the NIC if required. |
1294 | * @udp_tnl_add_port: Add a UDP tunnel port | |
1295 | * @udp_tnl_has_port: Check if a port has been added as UDP tunnel | |
1296 | * @udp_tnl_del_port: Remove a UDP tunnel port | |
daeda630 | 1297 | * @revision: Hardware architecture revision |
8ceee660 BH |
1298 | * @txd_ptr_tbl_base: TX descriptor ring base address |
1299 | * @rxd_ptr_tbl_base: RX descriptor ring base address | |
1300 | * @buf_tbl_base: Buffer table base address | |
1301 | * @evq_ptr_tbl_base: Event queue pointer table base address | |
1302 | * @evq_rptr_tbl_base: Event queue read-pointer table base address | |
8ceee660 | 1303 | * @max_dma_mask: Maximum possible DMA mask |
43a3739d JC |
1304 | * @rx_prefix_size: Size of RX prefix before packet data |
1305 | * @rx_hash_offset: Offset of RX flow hash within prefix | |
bd9a265d | 1306 | * @rx_ts_offset: Offset of timestamp within prefix |
85740cdf | 1307 | * @rx_buffer_padding: Size of padding at end of RX packet |
e8c68c0a JC |
1308 | * @can_rx_scatter: NIC is able to scatter packets to multiple buffers |
1309 | * @always_rx_scatter: NIC will always scatter packets to multiple buffers | |
de1deff9 | 1310 | * @option_descriptors: NIC supports TX option descriptors |
6f9f6ec2 AR |
1311 | * @min_interrupt_mode: Lowest capability interrupt mode supported |
1312 | * from &enum efx_int_mode. | |
8ceee660 | 1313 | * @max_interrupt_mode: Highest capability interrupt mode supported |
6f9f6ec2 | 1314 | * from &enum efx_int_mode. |
cc180b69 | 1315 | * @timer_period_max: Maximum period of interrupt timer (in ticks) |
c383b537 BH |
1316 | * @offload_features: net_device feature flags for protocol offload |
1317 | * features implemented in hardware | |
df2cd8af | 1318 | * @mcdi_max_ver: Maximum MCDI version supported |
9ec06595 | 1319 | * @hwtstamp_filters: Mask of hardware timestamp filter types supported |
8ceee660 BH |
1320 | */ |
1321 | struct efx_nic_type { | |
6f7f8aa6 | 1322 | bool is_vf; |
03714bbb | 1323 | unsigned int (*mem_bar)(struct efx_nic *efx); |
b105798f | 1324 | unsigned int (*mem_map_size)(struct efx_nic *efx); |
ef2b90ee BH |
1325 | int (*probe)(struct efx_nic *efx); |
1326 | void (*remove)(struct efx_nic *efx); | |
1327 | int (*init)(struct efx_nic *efx); | |
c15eed22 | 1328 | int (*dimension_resources)(struct efx_nic *efx); |
ef2b90ee BH |
1329 | void (*fini)(struct efx_nic *efx); |
1330 | void (*monitor)(struct efx_nic *efx); | |
0e2a9c7c BH |
1331 | enum reset_type (*map_reset_reason)(enum reset_type reason); |
1332 | int (*map_reset_flags)(u32 *flags); | |
ef2b90ee BH |
1333 | int (*reset)(struct efx_nic *efx, enum reset_type method); |
1334 | int (*probe_port)(struct efx_nic *efx); | |
1335 | void (*remove_port)(struct efx_nic *efx); | |
40641ed9 | 1336 | bool (*handle_global_event)(struct efx_channel *channel, efx_qword_t *); |
e42c3d85 | 1337 | int (*fini_dmaq)(struct efx_nic *efx); |
ef2b90ee | 1338 | void (*prepare_flush)(struct efx_nic *efx); |
d5e8cc6c | 1339 | void (*finish_flush)(struct efx_nic *efx); |
e283546c EC |
1340 | void (*prepare_flr)(struct efx_nic *efx); |
1341 | void (*finish_flr)(struct efx_nic *efx); | |
cd0ecc9a BH |
1342 | size_t (*describe_stats)(struct efx_nic *efx, u8 *names); |
1343 | size_t (*update_stats)(struct efx_nic *efx, u64 *full_stats, | |
1344 | struct rtnl_link_stats64 *core_stats); | |
ef2b90ee | 1345 | void (*start_stats)(struct efx_nic *efx); |
f8f3b5ae | 1346 | void (*pull_stats)(struct efx_nic *efx); |
ef2b90ee | 1347 | void (*stop_stats)(struct efx_nic *efx); |
06629f07 | 1348 | void (*set_id_led)(struct efx_nic *efx, enum efx_led_mode mode); |
ef2b90ee | 1349 | void (*push_irq_moderation)(struct efx_channel *channel); |
d3245b28 | 1350 | int (*reconfigure_port)(struct efx_nic *efx); |
9dd3a13b | 1351 | void (*prepare_enable_fc_tx)(struct efx_nic *efx); |
710b208d BH |
1352 | int (*reconfigure_mac)(struct efx_nic *efx); |
1353 | bool (*check_mac_fault)(struct efx_nic *efx); | |
89c758fa BH |
1354 | void (*get_wol)(struct efx_nic *efx, struct ethtool_wolinfo *wol); |
1355 | int (*set_wol)(struct efx_nic *efx, u32 type); | |
1356 | void (*resume_wol)(struct efx_nic *efx); | |
d4f2cecc | 1357 | int (*test_chip)(struct efx_nic *efx, struct efx_self_tests *tests); |
0aa3fbaa | 1358 | int (*test_nvram)(struct efx_nic *efx); |
f3ad5003 BH |
1359 | void (*mcdi_request)(struct efx_nic *efx, |
1360 | const efx_dword_t *hdr, size_t hdr_len, | |
1361 | const efx_dword_t *sdu, size_t sdu_len); | |
1362 | bool (*mcdi_poll_response)(struct efx_nic *efx); | |
1363 | void (*mcdi_read_response)(struct efx_nic *efx, efx_dword_t *pdu, | |
1364 | size_t pdu_offset, size_t pdu_len); | |
1365 | int (*mcdi_poll_reboot)(struct efx_nic *efx); | |
c577e59e | 1366 | void (*mcdi_reboot_detected)(struct efx_nic *efx); |
86094f7f | 1367 | void (*irq_enable_master)(struct efx_nic *efx); |
942e298e | 1368 | int (*irq_test_generate)(struct efx_nic *efx); |
86094f7f BH |
1369 | void (*irq_disable_non_ev)(struct efx_nic *efx); |
1370 | irqreturn_t (*irq_handle_msi)(int irq, void *dev_id); | |
1371 | irqreturn_t (*irq_handle_legacy)(int irq, void *dev_id); | |
1372 | int (*tx_probe)(struct efx_tx_queue *tx_queue); | |
1373 | void (*tx_init)(struct efx_tx_queue *tx_queue); | |
1374 | void (*tx_remove)(struct efx_tx_queue *tx_queue); | |
1375 | void (*tx_write)(struct efx_tx_queue *tx_queue); | |
e9117e50 BK |
1376 | unsigned int (*tx_limit_len)(struct efx_tx_queue *tx_queue, |
1377 | dma_addr_t dma_addr, unsigned int len); | |
267c0157 | 1378 | int (*rx_push_rss_config)(struct efx_nic *efx, bool user, |
f74d1995 | 1379 | const u32 *rx_indir_table, const u8 *key); |
a707d188 | 1380 | int (*rx_pull_rss_config)(struct efx_nic *efx); |
42356d9a EC |
1381 | int (*rx_push_rss_context_config)(struct efx_nic *efx, |
1382 | struct efx_rss_context *ctx, | |
1383 | const u32 *rx_indir_table, | |
1384 | const u8 *key); | |
1385 | int (*rx_pull_rss_context_config)(struct efx_nic *efx, | |
1386 | struct efx_rss_context *ctx); | |
1387 | void (*rx_restore_rss_contexts)(struct efx_nic *efx); | |
86094f7f BH |
1388 | int (*rx_probe)(struct efx_rx_queue *rx_queue); |
1389 | void (*rx_init)(struct efx_rx_queue *rx_queue); | |
1390 | void (*rx_remove)(struct efx_rx_queue *rx_queue); | |
1391 | void (*rx_write)(struct efx_rx_queue *rx_queue); | |
1392 | void (*rx_defer_refill)(struct efx_rx_queue *rx_queue); | |
1393 | int (*ev_probe)(struct efx_channel *channel); | |
261e4d96 | 1394 | int (*ev_init)(struct efx_channel *channel); |
86094f7f BH |
1395 | void (*ev_fini)(struct efx_channel *channel); |
1396 | void (*ev_remove)(struct efx_channel *channel); | |
1397 | int (*ev_process)(struct efx_channel *channel, int quota); | |
1398 | void (*ev_read_ack)(struct efx_channel *channel); | |
1399 | void (*ev_test_generate)(struct efx_channel *channel); | |
add72477 BH |
1400 | int (*filter_table_probe)(struct efx_nic *efx); |
1401 | void (*filter_table_restore)(struct efx_nic *efx); | |
1402 | void (*filter_table_remove)(struct efx_nic *efx); | |
1403 | void (*filter_update_rx_scatter)(struct efx_nic *efx); | |
1404 | s32 (*filter_insert)(struct efx_nic *efx, | |
1405 | struct efx_filter_spec *spec, bool replace); | |
1406 | int (*filter_remove_safe)(struct efx_nic *efx, | |
1407 | enum efx_filter_priority priority, | |
1408 | u32 filter_id); | |
1409 | int (*filter_get_safe)(struct efx_nic *efx, | |
1410 | enum efx_filter_priority priority, | |
1411 | u32 filter_id, struct efx_filter_spec *); | |
fbd79120 BH |
1412 | int (*filter_clear_rx)(struct efx_nic *efx, |
1413 | enum efx_filter_priority priority); | |
add72477 BH |
1414 | u32 (*filter_count_rx_used)(struct efx_nic *efx, |
1415 | enum efx_filter_priority priority); | |
1416 | u32 (*filter_get_rx_id_limit)(struct efx_nic *efx); | |
1417 | s32 (*filter_get_rx_ids)(struct efx_nic *efx, | |
1418 | enum efx_filter_priority priority, | |
1419 | u32 *buf, u32 size); | |
1420 | #ifdef CONFIG_RFS_ACCEL | |
add72477 BH |
1421 | bool (*filter_rfs_expire_one)(struct efx_nic *efx, u32 flow_id, |
1422 | unsigned int index); | |
1423 | #endif | |
45a3fd55 BH |
1424 | #ifdef CONFIG_SFC_MTD |
1425 | int (*mtd_probe)(struct efx_nic *efx); | |
1426 | void (*mtd_rename)(struct efx_mtd_partition *part); | |
1427 | int (*mtd_read)(struct mtd_info *mtd, loff_t start, size_t len, | |
1428 | size_t *retlen, u8 *buffer); | |
1429 | int (*mtd_erase)(struct mtd_info *mtd, loff_t start, size_t len); | |
1430 | int (*mtd_write)(struct mtd_info *mtd, loff_t start, size_t len, | |
1431 | size_t *retlen, const u8 *buffer); | |
1432 | int (*mtd_sync)(struct mtd_info *mtd); | |
1433 | #endif | |
977a5d5d | 1434 | void (*ptp_write_host_time)(struct efx_nic *efx, u32 host_time); |
bd9a265d | 1435 | int (*ptp_set_ts_sync_events)(struct efx_nic *efx, bool en, bool temp); |
9ec06595 DP |
1436 | int (*ptp_set_ts_config)(struct efx_nic *efx, |
1437 | struct hwtstamp_config *init); | |
834e23dd | 1438 | int (*sriov_configure)(struct efx_nic *efx, int num_vfs); |
4a53ea8a AR |
1439 | int (*vlan_rx_add_vid)(struct efx_nic *efx, __be16 proto, u16 vid); |
1440 | int (*vlan_rx_kill_vid)(struct efx_nic *efx, __be16 proto, u16 vid); | |
08a7b29b BK |
1441 | int (*get_phys_port_id)(struct efx_nic *efx, |
1442 | struct netdev_phys_item_id *ppid); | |
d98a4ffe SS |
1443 | int (*sriov_init)(struct efx_nic *efx); |
1444 | void (*sriov_fini)(struct efx_nic *efx); | |
d98a4ffe SS |
1445 | bool (*sriov_wanted)(struct efx_nic *efx); |
1446 | void (*sriov_reset)(struct efx_nic *efx); | |
7fa8d547 SS |
1447 | void (*sriov_flr)(struct efx_nic *efx, unsigned vf_i); |
1448 | int (*sriov_set_vf_mac)(struct efx_nic *efx, int vf_i, u8 *mac); | |
1449 | int (*sriov_set_vf_vlan)(struct efx_nic *efx, int vf_i, u16 vlan, | |
1450 | u8 qos); | |
1451 | int (*sriov_set_vf_spoofchk)(struct efx_nic *efx, int vf_i, | |
1452 | bool spoofchk); | |
1453 | int (*sriov_get_vf_config)(struct efx_nic *efx, int vf_i, | |
1454 | struct ifla_vf_info *ivi); | |
4392dc69 EC |
1455 | int (*sriov_set_vf_link_state)(struct efx_nic *efx, int vf_i, |
1456 | int link_state); | |
6d8aaaf6 DP |
1457 | int (*vswitching_probe)(struct efx_nic *efx); |
1458 | int (*vswitching_restore)(struct efx_nic *efx); | |
1459 | void (*vswitching_remove)(struct efx_nic *efx); | |
0d5e0fbb | 1460 | int (*get_mac_address)(struct efx_nic *efx, unsigned char *perm_addr); |
910c8789 | 1461 | int (*set_mac_address)(struct efx_nic *efx); |
46d1efd8 | 1462 | u32 (*tso_versions)(struct efx_nic *efx); |
e5fbd977 JC |
1463 | int (*udp_tnl_push_ports)(struct efx_nic *efx); |
1464 | int (*udp_tnl_add_port)(struct efx_nic *efx, struct efx_udp_tunnel tnl); | |
1465 | bool (*udp_tnl_has_port)(struct efx_nic *efx, __be16 port); | |
1466 | int (*udp_tnl_del_port)(struct efx_nic *efx, struct efx_udp_tunnel tnl); | |
b895d73e | 1467 | |
daeda630 | 1468 | int revision; |
8ceee660 BH |
1469 | unsigned int txd_ptr_tbl_base; |
1470 | unsigned int rxd_ptr_tbl_base; | |
1471 | unsigned int buf_tbl_base; | |
1472 | unsigned int evq_ptr_tbl_base; | |
1473 | unsigned int evq_rptr_tbl_base; | |
9bbd7d9a | 1474 | u64 max_dma_mask; |
43a3739d JC |
1475 | unsigned int rx_prefix_size; |
1476 | unsigned int rx_hash_offset; | |
bd9a265d | 1477 | unsigned int rx_ts_offset; |
8ceee660 | 1478 | unsigned int rx_buffer_padding; |
85740cdf | 1479 | bool can_rx_scatter; |
e8c68c0a | 1480 | bool always_rx_scatter; |
de1deff9 | 1481 | bool option_descriptors; |
6f9f6ec2 | 1482 | unsigned int min_interrupt_mode; |
8ceee660 | 1483 | unsigned int max_interrupt_mode; |
cc180b69 | 1484 | unsigned int timer_period_max; |
c8f44aff | 1485 | netdev_features_t offload_features; |
df2cd8af | 1486 | int mcdi_max_ver; |
add72477 | 1487 | unsigned int max_rx_ip_filters; |
9ec06595 | 1488 | u32 hwtstamp_filters; |
f74d1995 | 1489 | unsigned int rx_hash_key_size; |
8ceee660 BH |
1490 | }; |
1491 | ||
1492 | /************************************************************************** | |
1493 | * | |
1494 | * Prototypes and inline functions | |
1495 | * | |
1496 | *************************************************************************/ | |
1497 | ||
f7d12cdc BH |
1498 | static inline struct efx_channel * |
1499 | efx_get_channel(struct efx_nic *efx, unsigned index) | |
1500 | { | |
e01b16a7 | 1501 | EFX_WARN_ON_ONCE_PARANOID(index >= efx->n_channels); |
8313aca3 | 1502 | return efx->channel[index]; |
f7d12cdc BH |
1503 | } |
1504 | ||
8ceee660 BH |
1505 | /* Iterate over all used channels */ |
1506 | #define efx_for_each_channel(_channel, _efx) \ | |
8313aca3 BH |
1507 | for (_channel = (_efx)->channel[0]; \ |
1508 | _channel; \ | |
1509 | _channel = (_channel->channel + 1 < (_efx)->n_channels) ? \ | |
1510 | (_efx)->channel[_channel->channel + 1] : NULL) | |
8ceee660 | 1511 | |
7f967c01 BH |
1512 | /* Iterate over all used channels in reverse */ |
1513 | #define efx_for_each_channel_rev(_channel, _efx) \ | |
1514 | for (_channel = (_efx)->channel[(_efx)->n_channels - 1]; \ | |
1515 | _channel; \ | |
1516 | _channel = _channel->channel ? \ | |
1517 | (_efx)->channel[_channel->channel - 1] : NULL) | |
1518 | ||
97653431 BH |
1519 | static inline struct efx_tx_queue * |
1520 | efx_get_tx_queue(struct efx_nic *efx, unsigned index, unsigned type) | |
1521 | { | |
e01b16a7 EC |
1522 | EFX_WARN_ON_ONCE_PARANOID(index >= efx->n_tx_channels || |
1523 | type >= EFX_TXQ_TYPES); | |
97653431 BH |
1524 | return &efx->channel[efx->tx_channel_offset + index]->tx_queue[type]; |
1525 | } | |
f7d12cdc | 1526 | |
3990a8ff CM |
1527 | static inline struct efx_channel * |
1528 | efx_get_xdp_channel(struct efx_nic *efx, unsigned int index) | |
1529 | { | |
1530 | EFX_WARN_ON_ONCE_PARANOID(index >= efx->n_xdp_channels); | |
1531 | return efx->channel[efx->xdp_channel_offset + index]; | |
1532 | } | |
1533 | ||
1534 | static inline bool efx_channel_is_xdp_tx(struct efx_channel *channel) | |
1535 | { | |
1536 | return channel->channel - channel->efx->xdp_channel_offset < | |
1537 | channel->efx->n_xdp_channels; | |
1538 | } | |
1539 | ||
525da907 BH |
1540 | static inline bool efx_channel_has_tx_queues(struct efx_channel *channel) |
1541 | { | |
8700aff0 | 1542 | return true; |
525da907 BH |
1543 | } |
1544 | ||
f7d12cdc BH |
1545 | static inline struct efx_tx_queue * |
1546 | efx_channel_get_tx_queue(struct efx_channel *channel, unsigned type) | |
1547 | { | |
e01b16a7 EC |
1548 | EFX_WARN_ON_ONCE_PARANOID(!efx_channel_has_tx_queues(channel) || |
1549 | type >= EFX_TXQ_TYPES); | |
525da907 | 1550 | return &channel->tx_queue[type]; |
f7d12cdc | 1551 | } |
8ceee660 | 1552 | |
94b274bf BH |
1553 | static inline bool efx_tx_queue_used(struct efx_tx_queue *tx_queue) |
1554 | { | |
1555 | return !(tx_queue->efx->net_dev->num_tc < 2 && | |
1556 | tx_queue->queue & EFX_TXQ_TYPE_HIGHPRI); | |
1557 | } | |
1558 | ||
8ceee660 BH |
1559 | /* Iterate over all TX queues belonging to a channel */ |
1560 | #define efx_for_each_channel_tx_queue(_tx_queue, _channel) \ | |
525da907 BH |
1561 | if (!efx_channel_has_tx_queues(_channel)) \ |
1562 | ; \ | |
1563 | else \ | |
1564 | for (_tx_queue = (_channel)->tx_queue; \ | |
94b274bf | 1565 | _tx_queue < (_channel)->tx_queue + EFX_TXQ_TYPES && \ |
3990a8ff CM |
1566 | (efx_tx_queue_used(_tx_queue) || \ |
1567 | efx_channel_is_xdp_tx(_channel)); \ | |
525da907 | 1568 | _tx_queue++) |
8ceee660 | 1569 | |
94b274bf BH |
1570 | /* Iterate over all possible TX queues belonging to a channel */ |
1571 | #define efx_for_each_possible_channel_tx_queue(_tx_queue, _channel) \ | |
73e0026f BH |
1572 | if (!efx_channel_has_tx_queues(_channel)) \ |
1573 | ; \ | |
1574 | else \ | |
1575 | for (_tx_queue = (_channel)->tx_queue; \ | |
1576 | _tx_queue < (_channel)->tx_queue + EFX_TXQ_TYPES; \ | |
1577 | _tx_queue++) | |
94b274bf | 1578 | |
525da907 BH |
1579 | static inline bool efx_channel_has_rx_queue(struct efx_channel *channel) |
1580 | { | |
79d68b37 | 1581 | return channel->rx_queue.core_index >= 0; |
525da907 BH |
1582 | } |
1583 | ||
f7d12cdc BH |
1584 | static inline struct efx_rx_queue * |
1585 | efx_channel_get_rx_queue(struct efx_channel *channel) | |
1586 | { | |
e01b16a7 | 1587 | EFX_WARN_ON_ONCE_PARANOID(!efx_channel_has_rx_queue(channel)); |
525da907 | 1588 | return &channel->rx_queue; |
f7d12cdc BH |
1589 | } |
1590 | ||
8ceee660 BH |
1591 | /* Iterate over all RX queues belonging to a channel */ |
1592 | #define efx_for_each_channel_rx_queue(_rx_queue, _channel) \ | |
525da907 BH |
1593 | if (!efx_channel_has_rx_queue(_channel)) \ |
1594 | ; \ | |
1595 | else \ | |
1596 | for (_rx_queue = &(_channel)->rx_queue; \ | |
1597 | _rx_queue; \ | |
1598 | _rx_queue = NULL) | |
8ceee660 | 1599 | |
ba1e8a35 BH |
1600 | static inline struct efx_channel * |
1601 | efx_rx_queue_channel(struct efx_rx_queue *rx_queue) | |
1602 | { | |
8313aca3 | 1603 | return container_of(rx_queue, struct efx_channel, rx_queue); |
ba1e8a35 BH |
1604 | } |
1605 | ||
1606 | static inline int efx_rx_queue_index(struct efx_rx_queue *rx_queue) | |
1607 | { | |
8313aca3 | 1608 | return efx_rx_queue_channel(rx_queue)->channel; |
ba1e8a35 BH |
1609 | } |
1610 | ||
8ceee660 BH |
1611 | /* Returns a pointer to the specified receive buffer in the RX |
1612 | * descriptor queue. | |
1613 | */ | |
1614 | static inline struct efx_rx_buffer *efx_rx_buffer(struct efx_rx_queue *rx_queue, | |
1615 | unsigned int index) | |
1616 | { | |
807540ba | 1617 | return &rx_queue->buffer[index]; |
8ceee660 BH |
1618 | } |
1619 | ||
e1253f39 AM |
1620 | static inline struct efx_rx_buffer * |
1621 | efx_rx_buf_next(struct efx_rx_queue *rx_queue, struct efx_rx_buffer *rx_buf) | |
1622 | { | |
1623 | if (unlikely(rx_buf == efx_rx_buffer(rx_queue, rx_queue->ptr_mask))) | |
1624 | return efx_rx_buffer(rx_queue, 0); | |
1625 | else | |
1626 | return rx_buf + 1; | |
1627 | } | |
1628 | ||
8ceee660 BH |
1629 | /** |
1630 | * EFX_MAX_FRAME_LEN - calculate maximum frame length | |
1631 | * | |
1632 | * This calculates the maximum frame length that will be used for a | |
1633 | * given MTU. The frame length will be equal to the MTU plus a | |
1634 | * constant amount of header space and padding. This is the quantity | |
1635 | * that the net driver will program into the MAC as the maximum frame | |
1636 | * length. | |
1637 | * | |
754c653a | 1638 | * The 10G MAC requires 8-byte alignment on the frame |
8ceee660 | 1639 | * length, so we round up to the nearest 8. |
cc11763b BH |
1640 | * |
1641 | * Re-clocking by the XGXS on RX can reduce an IPG to 32 bits (half an | |
1642 | * XGMII cycle). If the frame length reaches the maximum value in the | |
1643 | * same cycle, the XMAC can miss the IPG altogether. We work around | |
1644 | * this by adding a further 16 bytes. | |
8ceee660 | 1645 | */ |
6f24e5d5 | 1646 | #define EFX_FRAME_PAD 16 |
8ceee660 | 1647 | #define EFX_MAX_FRAME_LEN(mtu) \ |
6f24e5d5 | 1648 | (ALIGN(((mtu) + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN + EFX_FRAME_PAD), 8)) |
8ceee660 | 1649 | |
7c236c43 SH |
1650 | static inline bool efx_xmit_with_hwtstamp(struct sk_buff *skb) |
1651 | { | |
1652 | return skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP; | |
1653 | } | |
1654 | static inline void efx_xmit_hwtstamp_pending(struct sk_buff *skb) | |
1655 | { | |
1656 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; | |
1657 | } | |
8ceee660 | 1658 | |
e4478ad1 MH |
1659 | /* Get all supported features. |
1660 | * If a feature is not fixed, it is present in hw_features. | |
1661 | * If a feature is fixed, it does not present in hw_features, but | |
1662 | * always in features. | |
1663 | */ | |
1664 | static inline netdev_features_t efx_supported_features(const struct efx_nic *efx) | |
1665 | { | |
1666 | const struct net_device *net_dev = efx->net_dev; | |
1667 | ||
1668 | return net_dev->features | net_dev->hw_features; | |
1669 | } | |
1670 | ||
e9117e50 BK |
1671 | /* Get the current TX queue insert index. */ |
1672 | static inline unsigned int | |
1673 | efx_tx_queue_get_insert_index(const struct efx_tx_queue *tx_queue) | |
1674 | { | |
1675 | return tx_queue->insert_count & tx_queue->ptr_mask; | |
1676 | } | |
1677 | ||
1678 | /* Get a TX buffer. */ | |
1679 | static inline struct efx_tx_buffer * | |
1680 | __efx_tx_queue_get_insert_buffer(const struct efx_tx_queue *tx_queue) | |
1681 | { | |
1682 | return &tx_queue->buffer[efx_tx_queue_get_insert_index(tx_queue)]; | |
1683 | } | |
1684 | ||
1685 | /* Get a TX buffer, checking it's not currently in use. */ | |
1686 | static inline struct efx_tx_buffer * | |
1687 | efx_tx_queue_get_insert_buffer(const struct efx_tx_queue *tx_queue) | |
1688 | { | |
1689 | struct efx_tx_buffer *buffer = | |
1690 | __efx_tx_queue_get_insert_buffer(tx_queue); | |
1691 | ||
e01b16a7 EC |
1692 | EFX_WARN_ON_ONCE_PARANOID(buffer->len); |
1693 | EFX_WARN_ON_ONCE_PARANOID(buffer->flags); | |
1694 | EFX_WARN_ON_ONCE_PARANOID(buffer->unmap_len); | |
e9117e50 BK |
1695 | |
1696 | return buffer; | |
1697 | } | |
1698 | ||
8ceee660 | 1699 | #endif /* EFX_NET_DRIVER_H */ |