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8ceee660 BH |
1 | /**************************************************************************** |
2 | * Driver for Solarflare Solarstorm network controllers and boards | |
3 | * Copyright 2005-2006 Fen Systems Ltd. | |
0a6f40c6 | 4 | * Copyright 2005-2011 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 | ||
62776d03 BH |
16 | #if defined(EFX_ENABLE_DEBUG) && !defined(DEBUG) |
17 | #define DEBUG | |
18 | #endif | |
19 | ||
8ceee660 BH |
20 | #include <linux/version.h> |
21 | #include <linux/netdevice.h> | |
22 | #include <linux/etherdevice.h> | |
23 | #include <linux/ethtool.h> | |
24 | #include <linux/if_vlan.h> | |
90d683af | 25 | #include <linux/timer.h> |
68e7f45e | 26 | #include <linux/mdio.h> |
8ceee660 BH |
27 | #include <linux/list.h> |
28 | #include <linux/pci.h> | |
29 | #include <linux/device.h> | |
30 | #include <linux/highmem.h> | |
31 | #include <linux/workqueue.h> | |
10ed61c4 | 32 | #include <linux/vmalloc.h> |
37b5a603 | 33 | #include <linux/i2c.h> |
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34 | |
35 | #include "enum.h" | |
36 | #include "bitfield.h" | |
8ceee660 | 37 | |
8ceee660 BH |
38 | /************************************************************************** |
39 | * | |
40 | * Build definitions | |
41 | * | |
42 | **************************************************************************/ | |
c5d5f5fd | 43 | |
6d84b986 | 44 | #define EFX_DRIVER_VERSION "3.1" |
8ceee660 BH |
45 | |
46 | #ifdef EFX_ENABLE_DEBUG | |
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 | ||
60 | #define EFX_MAX_CHANNELS 32 | |
8ceee660 BH |
61 | #define EFX_MAX_RX_QUEUES EFX_MAX_CHANNELS |
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 | |
8ceee660 BH |
73 | /** |
74 | * struct efx_special_buffer - An Efx special buffer | |
75 | * @addr: CPU base address of the buffer | |
76 | * @dma_addr: DMA base address of the buffer | |
77 | * @len: Buffer length, in bytes | |
78 | * @index: Buffer index within controller;s buffer table | |
79 | * @entries: Number of buffer table entries | |
80 | * | |
81 | * Special buffers are used for the event queues and the TX and RX | |
82 | * descriptor queues for each channel. They are *not* used for the | |
83 | * actual transmit and receive buffers. | |
8ceee660 BH |
84 | */ |
85 | struct efx_special_buffer { | |
86 | void *addr; | |
87 | dma_addr_t dma_addr; | |
88 | unsigned int len; | |
89 | int index; | |
90 | int entries; | |
91 | }; | |
92 | ||
127e6e10 BH |
93 | enum efx_flush_state { |
94 | FLUSH_NONE, | |
95 | FLUSH_PENDING, | |
96 | FLUSH_FAILED, | |
97 | FLUSH_DONE, | |
98 | }; | |
99 | ||
8ceee660 BH |
100 | /** |
101 | * struct efx_tx_buffer - An Efx TX buffer | |
102 | * @skb: The associated socket buffer. | |
103 | * Set only on the final fragment of a packet; %NULL for all other | |
104 | * fragments. When this fragment completes, then we can free this | |
105 | * skb. | |
b9b39b62 BH |
106 | * @tsoh: The associated TSO header structure, or %NULL if this |
107 | * buffer is not a TSO header. | |
8ceee660 BH |
108 | * @dma_addr: DMA address of the fragment. |
109 | * @len: Length of this fragment. | |
110 | * This field is zero when the queue slot is empty. | |
111 | * @continuation: True if this fragment is not the end of a packet. | |
112 | * @unmap_single: True if pci_unmap_single should be used. | |
8ceee660 BH |
113 | * @unmap_len: Length of this fragment to unmap |
114 | */ | |
115 | struct efx_tx_buffer { | |
116 | const struct sk_buff *skb; | |
b9b39b62 | 117 | struct efx_tso_header *tsoh; |
8ceee660 BH |
118 | dma_addr_t dma_addr; |
119 | unsigned short len; | |
dc8cfa55 BH |
120 | bool continuation; |
121 | bool unmap_single; | |
8ceee660 BH |
122 | unsigned short unmap_len; |
123 | }; | |
124 | ||
125 | /** | |
126 | * struct efx_tx_queue - An Efx TX queue | |
127 | * | |
128 | * This is a ring buffer of TX fragments. | |
129 | * Since the TX completion path always executes on the same | |
130 | * CPU and the xmit path can operate on different CPUs, | |
131 | * performance is increased by ensuring that the completion | |
132 | * path and the xmit path operate on different cache lines. | |
133 | * This is particularly important if the xmit path is always | |
134 | * executing on one CPU which is different from the completion | |
135 | * path. There is also a cache line for members which are | |
136 | * read but not written on the fast path. | |
137 | * | |
138 | * @efx: The associated Efx NIC | |
139 | * @queue: DMA queue number | |
8ceee660 | 140 | * @channel: The associated channel |
c04bfc6b | 141 | * @core_txq: The networking core TX queue structure |
8ceee660 BH |
142 | * @buffer: The software buffer ring |
143 | * @txd: The hardware descriptor ring | |
ecc910f5 | 144 | * @ptr_mask: The size of the ring minus 1. |
94b274bf | 145 | * @initialised: Has hardware queue been initialised? |
6bc5d3a9 | 146 | * @flushed: Used when handling queue flushing |
8ceee660 BH |
147 | * @read_count: Current read pointer. |
148 | * This is the number of buffers that have been removed from both rings. | |
cd38557d BH |
149 | * @old_write_count: The value of @write_count when last checked. |
150 | * This is here for performance reasons. The xmit path will | |
151 | * only get the up-to-date value of @write_count if this | |
152 | * variable indicates that the queue is empty. This is to | |
153 | * avoid cache-line ping-pong between the xmit path and the | |
154 | * completion path. | |
8ceee660 BH |
155 | * @insert_count: Current insert pointer |
156 | * This is the number of buffers that have been added to the | |
157 | * software ring. | |
158 | * @write_count: Current write pointer | |
159 | * This is the number of buffers that have been added to the | |
160 | * hardware ring. | |
161 | * @old_read_count: The value of read_count when last checked. | |
162 | * This is here for performance reasons. The xmit path will | |
163 | * only get the up-to-date value of read_count if this | |
164 | * variable indicates that the queue is full. This is to | |
165 | * avoid cache-line ping-pong between the xmit path and the | |
166 | * completion path. | |
b9b39b62 BH |
167 | * @tso_headers_free: A list of TSO headers allocated for this TX queue |
168 | * that are not in use, and so available for new TSO sends. The list | |
169 | * is protected by the TX queue lock. | |
170 | * @tso_bursts: Number of times TSO xmit invoked by kernel | |
171 | * @tso_long_headers: Number of packets with headers too long for standard | |
172 | * blocks | |
173 | * @tso_packets: Number of packets via the TSO xmit path | |
cd38557d BH |
174 | * @pushes: Number of times the TX push feature has been used |
175 | * @empty_read_count: If the completion path has seen the queue as empty | |
176 | * and the transmission path has not yet checked this, the value of | |
177 | * @read_count bitwise-added to %EFX_EMPTY_COUNT_VALID; otherwise 0. | |
8ceee660 BH |
178 | */ |
179 | struct efx_tx_queue { | |
180 | /* Members which don't change on the fast path */ | |
181 | struct efx_nic *efx ____cacheline_aligned_in_smp; | |
a4900ac9 | 182 | unsigned queue; |
8ceee660 | 183 | struct efx_channel *channel; |
c04bfc6b | 184 | struct netdev_queue *core_txq; |
8ceee660 BH |
185 | struct efx_tx_buffer *buffer; |
186 | struct efx_special_buffer txd; | |
ecc910f5 | 187 | unsigned int ptr_mask; |
94b274bf | 188 | bool initialised; |
127e6e10 | 189 | enum efx_flush_state flushed; |
8ceee660 BH |
190 | |
191 | /* Members used mainly on the completion path */ | |
192 | unsigned int read_count ____cacheline_aligned_in_smp; | |
cd38557d | 193 | unsigned int old_write_count; |
8ceee660 BH |
194 | |
195 | /* Members used only on the xmit path */ | |
196 | unsigned int insert_count ____cacheline_aligned_in_smp; | |
197 | unsigned int write_count; | |
198 | unsigned int old_read_count; | |
b9b39b62 BH |
199 | struct efx_tso_header *tso_headers_free; |
200 | unsigned int tso_bursts; | |
201 | unsigned int tso_long_headers; | |
202 | unsigned int tso_packets; | |
cd38557d BH |
203 | unsigned int pushes; |
204 | ||
205 | /* Members shared between paths and sometimes updated */ | |
206 | unsigned int empty_read_count ____cacheline_aligned_in_smp; | |
207 | #define EFX_EMPTY_COUNT_VALID 0x80000000 | |
8ceee660 BH |
208 | }; |
209 | ||
210 | /** | |
211 | * struct efx_rx_buffer - An Efx RX data buffer | |
212 | * @dma_addr: DMA base address of the buffer | |
213 | * @skb: The associated socket buffer, if any. | |
214 | * If both this and page are %NULL, the buffer slot is currently free. | |
215 | * @page: The associated page buffer, if any. | |
216 | * If both this and skb are %NULL, the buffer slot is currently free. | |
8ceee660 | 217 | * @len: Buffer length, in bytes. |
8ba5366a | 218 | * @is_page: Indicates if @page is valid. If false, @skb is valid. |
8ceee660 BH |
219 | */ |
220 | struct efx_rx_buffer { | |
221 | dma_addr_t dma_addr; | |
8ba5366a SH |
222 | union { |
223 | struct sk_buff *skb; | |
224 | struct page *page; | |
225 | } u; | |
8ceee660 | 226 | unsigned int len; |
8ba5366a | 227 | bool is_page; |
8ceee660 BH |
228 | }; |
229 | ||
62b330ba SH |
230 | /** |
231 | * struct efx_rx_page_state - Page-based rx buffer state | |
232 | * | |
233 | * Inserted at the start of every page allocated for receive buffers. | |
234 | * Used to facilitate sharing dma mappings between recycled rx buffers | |
235 | * and those passed up to the kernel. | |
236 | * | |
237 | * @refcnt: Number of struct efx_rx_buffer's referencing this page. | |
238 | * When refcnt falls to zero, the page is unmapped for dma | |
239 | * @dma_addr: The dma address of this page. | |
240 | */ | |
241 | struct efx_rx_page_state { | |
242 | unsigned refcnt; | |
243 | dma_addr_t dma_addr; | |
244 | ||
245 | unsigned int __pad[0] ____cacheline_aligned; | |
246 | }; | |
247 | ||
8ceee660 BH |
248 | /** |
249 | * struct efx_rx_queue - An Efx RX queue | |
250 | * @efx: The associated Efx NIC | |
8ceee660 BH |
251 | * @buffer: The software buffer ring |
252 | * @rxd: The hardware descriptor ring | |
ecc910f5 | 253 | * @ptr_mask: The size of the ring minus 1. |
8ceee660 BH |
254 | * @added_count: Number of buffers added to the receive queue. |
255 | * @notified_count: Number of buffers given to NIC (<= @added_count). | |
256 | * @removed_count: Number of buffers removed from the receive queue. | |
8ceee660 BH |
257 | * @max_fill: RX descriptor maximum fill level (<= ring size) |
258 | * @fast_fill_trigger: RX descriptor fill level that will trigger a fast fill | |
259 | * (<= @max_fill) | |
260 | * @fast_fill_limit: The level to which a fast fill will fill | |
261 | * (@fast_fill_trigger <= @fast_fill_limit <= @max_fill) | |
262 | * @min_fill: RX descriptor minimum non-zero fill level. | |
263 | * This records the minimum fill level observed when a ring | |
264 | * refill was triggered. | |
8ceee660 BH |
265 | * @alloc_page_count: RX allocation strategy counter. |
266 | * @alloc_skb_count: RX allocation strategy counter. | |
90d683af | 267 | * @slow_fill: Timer used to defer efx_nic_generate_fill_event(). |
6bc5d3a9 | 268 | * @flushed: Use when handling queue flushing |
8ceee660 BH |
269 | */ |
270 | struct efx_rx_queue { | |
271 | struct efx_nic *efx; | |
8ceee660 BH |
272 | struct efx_rx_buffer *buffer; |
273 | struct efx_special_buffer rxd; | |
ecc910f5 | 274 | unsigned int ptr_mask; |
8ceee660 BH |
275 | |
276 | int added_count; | |
277 | int notified_count; | |
278 | int removed_count; | |
8ceee660 BH |
279 | unsigned int max_fill; |
280 | unsigned int fast_fill_trigger; | |
281 | unsigned int fast_fill_limit; | |
282 | unsigned int min_fill; | |
283 | unsigned int min_overfill; | |
284 | unsigned int alloc_page_count; | |
285 | unsigned int alloc_skb_count; | |
90d683af | 286 | struct timer_list slow_fill; |
8ceee660 BH |
287 | unsigned int slow_fill_count; |
288 | ||
127e6e10 | 289 | enum efx_flush_state flushed; |
8ceee660 BH |
290 | }; |
291 | ||
292 | /** | |
293 | * struct efx_buffer - An Efx general-purpose buffer | |
294 | * @addr: host base address of the buffer | |
295 | * @dma_addr: DMA base address of the buffer | |
296 | * @len: Buffer length, in bytes | |
297 | * | |
754c653a | 298 | * The NIC uses these buffers for its interrupt status registers and |
8ceee660 BH |
299 | * MAC stats dumps. |
300 | */ | |
301 | struct efx_buffer { | |
302 | void *addr; | |
303 | dma_addr_t dma_addr; | |
304 | unsigned int len; | |
305 | }; | |
306 | ||
307 | ||
8ceee660 BH |
308 | enum efx_rx_alloc_method { |
309 | RX_ALLOC_METHOD_AUTO = 0, | |
310 | RX_ALLOC_METHOD_SKB = 1, | |
311 | RX_ALLOC_METHOD_PAGE = 2, | |
312 | }; | |
313 | ||
314 | /** | |
315 | * struct efx_channel - An Efx channel | |
316 | * | |
317 | * A channel comprises an event queue, at least one TX queue, at least | |
318 | * one RX queue, and an associated tasklet for processing the event | |
319 | * queue. | |
320 | * | |
321 | * @efx: Associated Efx NIC | |
8ceee660 | 322 | * @channel: Channel instance number |
8ceee660 BH |
323 | * @enabled: Channel enabled indicator |
324 | * @irq: IRQ number (MSI and MSI-X only) | |
0d86ebd8 | 325 | * @irq_moderation: IRQ moderation value (in hardware ticks) |
8ceee660 BH |
326 | * @napi_dev: Net device used with NAPI |
327 | * @napi_str: NAPI control structure | |
8ceee660 BH |
328 | * @work_pending: Is work pending via NAPI? |
329 | * @eventq: Event queue buffer | |
ecc910f5 | 330 | * @eventq_mask: Event queue pointer mask |
8ceee660 BH |
331 | * @eventq_read_ptr: Event queue read pointer |
332 | * @last_eventq_read_ptr: Last event queue read pointer value. | |
6fb70fd1 BH |
333 | * @irq_count: Number of IRQs since last adaptive moderation decision |
334 | * @irq_mod_score: IRQ moderation score | |
8ceee660 BH |
335 | * @rx_alloc_level: Watermark based heuristic counter for pushing descriptors |
336 | * and diagnostic counters | |
337 | * @rx_alloc_push_pages: RX allocation method currently in use for pushing | |
338 | * descriptors | |
8ceee660 | 339 | * @n_rx_tobe_disc: Count of RX_TOBE_DISC errors |
8ceee660 BH |
340 | * @n_rx_ip_hdr_chksum_err: Count of RX IP header checksum errors |
341 | * @n_rx_tcp_udp_chksum_err: Count of RX TCP and UDP checksum errors | |
c1ac403b | 342 | * @n_rx_mcast_mismatch: Count of unmatched multicast frames |
8ceee660 BH |
343 | * @n_rx_frm_trunc: Count of RX_FRM_TRUNC errors |
344 | * @n_rx_overlength: Count of RX_OVERLENGTH errors | |
345 | * @n_skbuff_leaks: Count of skbuffs leaked due to RX overrun | |
8313aca3 | 346 | * @rx_queue: RX queue for this channel |
8313aca3 | 347 | * @tx_queue: TX queues for this channel |
8ceee660 BH |
348 | */ |
349 | struct efx_channel { | |
350 | struct efx_nic *efx; | |
8ceee660 | 351 | int channel; |
dc8cfa55 | 352 | bool enabled; |
8ceee660 | 353 | int irq; |
8ceee660 BH |
354 | unsigned int irq_moderation; |
355 | struct net_device *napi_dev; | |
356 | struct napi_struct napi_str; | |
dc8cfa55 | 357 | bool work_pending; |
8ceee660 | 358 | struct efx_special_buffer eventq; |
ecc910f5 | 359 | unsigned int eventq_mask; |
8ceee660 BH |
360 | unsigned int eventq_read_ptr; |
361 | unsigned int last_eventq_read_ptr; | |
8ceee660 | 362 | |
6fb70fd1 BH |
363 | unsigned int irq_count; |
364 | unsigned int irq_mod_score; | |
64d8ad6d BH |
365 | #ifdef CONFIG_RFS_ACCEL |
366 | unsigned int rfs_filters_added; | |
367 | #endif | |
6fb70fd1 | 368 | |
8ceee660 BH |
369 | int rx_alloc_level; |
370 | int rx_alloc_push_pages; | |
8ceee660 BH |
371 | |
372 | unsigned n_rx_tobe_disc; | |
8ceee660 BH |
373 | unsigned n_rx_ip_hdr_chksum_err; |
374 | unsigned n_rx_tcp_udp_chksum_err; | |
c1ac403b | 375 | unsigned n_rx_mcast_mismatch; |
8ceee660 BH |
376 | unsigned n_rx_frm_trunc; |
377 | unsigned n_rx_overlength; | |
378 | unsigned n_skbuff_leaks; | |
379 | ||
380 | /* Used to pipeline received packets in order to optimise memory | |
381 | * access with prefetches. | |
382 | */ | |
383 | struct efx_rx_buffer *rx_pkt; | |
dc8cfa55 | 384 | bool rx_pkt_csummed; |
8ceee660 | 385 | |
8313aca3 | 386 | struct efx_rx_queue rx_queue; |
94b274bf | 387 | struct efx_tx_queue tx_queue[EFX_TXQ_TYPES]; |
8ceee660 BH |
388 | }; |
389 | ||
398468ed BH |
390 | enum efx_led_mode { |
391 | EFX_LED_OFF = 0, | |
392 | EFX_LED_ON = 1, | |
393 | EFX_LED_DEFAULT = 2 | |
394 | }; | |
395 | ||
c459302d BH |
396 | #define STRING_TABLE_LOOKUP(val, member) \ |
397 | ((val) < member ## _max) ? member ## _names[val] : "(invalid)" | |
398 | ||
399 | extern const char *efx_loopback_mode_names[]; | |
400 | extern const unsigned int efx_loopback_mode_max; | |
401 | #define LOOPBACK_MODE(efx) \ | |
402 | STRING_TABLE_LOOKUP((efx)->loopback_mode, efx_loopback_mode) | |
403 | ||
c459302d BH |
404 | extern const char *efx_reset_type_names[]; |
405 | extern const unsigned int efx_reset_type_max; | |
406 | #define RESET_TYPE(type) \ | |
407 | STRING_TABLE_LOOKUP(type, efx_reset_type) | |
3273c2e8 | 408 | |
8ceee660 BH |
409 | enum efx_int_mode { |
410 | /* Be careful if altering to correct macro below */ | |
411 | EFX_INT_MODE_MSIX = 0, | |
412 | EFX_INT_MODE_MSI = 1, | |
413 | EFX_INT_MODE_LEGACY = 2, | |
414 | EFX_INT_MODE_MAX /* Insert any new items before this */ | |
415 | }; | |
416 | #define EFX_INT_MODE_USE_MSI(x) (((x)->interrupt_mode) <= EFX_INT_MODE_MSI) | |
417 | ||
8ceee660 BH |
418 | enum nic_state { |
419 | STATE_INIT = 0, | |
420 | STATE_RUNNING = 1, | |
421 | STATE_FINI = 2, | |
3c78708f | 422 | STATE_DISABLED = 3, |
8ceee660 BH |
423 | STATE_MAX, |
424 | }; | |
425 | ||
426 | /* | |
427 | * Alignment of page-allocated RX buffers | |
428 | * | |
429 | * Controls the number of bytes inserted at the start of an RX buffer. | |
430 | * This is the equivalent of NET_IP_ALIGN [which controls the alignment | |
431 | * of the skb->head for hardware DMA]. | |
432 | */ | |
13e9ab11 | 433 | #ifdef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS |
8ceee660 BH |
434 | #define EFX_PAGE_IP_ALIGN 0 |
435 | #else | |
436 | #define EFX_PAGE_IP_ALIGN NET_IP_ALIGN | |
437 | #endif | |
438 | ||
439 | /* | |
440 | * Alignment of the skb->head which wraps a page-allocated RX buffer | |
441 | * | |
442 | * The skb allocated to wrap an rx_buffer can have this alignment. Since | |
443 | * the data is memcpy'd from the rx_buf, it does not need to be equal to | |
444 | * EFX_PAGE_IP_ALIGN. | |
445 | */ | |
446 | #define EFX_PAGE_SKB_ALIGN 2 | |
447 | ||
448 | /* Forward declaration */ | |
449 | struct efx_nic; | |
450 | ||
451 | /* Pseudo bit-mask flow control field */ | |
452 | enum efx_fc_type { | |
3f926da8 BH |
453 | EFX_FC_RX = FLOW_CTRL_RX, |
454 | EFX_FC_TX = FLOW_CTRL_TX, | |
8ceee660 BH |
455 | EFX_FC_AUTO = 4, |
456 | }; | |
457 | ||
eb50c0d6 BH |
458 | /** |
459 | * struct efx_link_state - Current state of the link | |
460 | * @up: Link is up | |
461 | * @fd: Link is full-duplex | |
462 | * @fc: Actual flow control flags | |
463 | * @speed: Link speed (Mbps) | |
464 | */ | |
465 | struct efx_link_state { | |
466 | bool up; | |
467 | bool fd; | |
468 | enum efx_fc_type fc; | |
469 | unsigned int speed; | |
470 | }; | |
471 | ||
fdaa9aed SH |
472 | static inline bool efx_link_state_equal(const struct efx_link_state *left, |
473 | const struct efx_link_state *right) | |
474 | { | |
475 | return left->up == right->up && left->fd == right->fd && | |
476 | left->fc == right->fc && left->speed == right->speed; | |
477 | } | |
478 | ||
177dfcd8 BH |
479 | /** |
480 | * struct efx_mac_operations - Efx MAC operations table | |
481 | * @reconfigure: Reconfigure MAC. Serialised by the mac_lock | |
482 | * @update_stats: Update statistics | |
9007b9fa | 483 | * @check_fault: Check fault state. True if fault present. |
177dfcd8 BH |
484 | */ |
485 | struct efx_mac_operations { | |
d3245b28 | 486 | int (*reconfigure) (struct efx_nic *efx); |
177dfcd8 | 487 | void (*update_stats) (struct efx_nic *efx); |
9007b9fa | 488 | bool (*check_fault)(struct efx_nic *efx); |
177dfcd8 BH |
489 | }; |
490 | ||
8ceee660 BH |
491 | /** |
492 | * struct efx_phy_operations - Efx PHY operations table | |
c1c4f453 BH |
493 | * @probe: Probe PHY and initialise efx->mdio.mode_support, efx->mdio.mmds, |
494 | * efx->loopback_modes. | |
8ceee660 BH |
495 | * @init: Initialise PHY |
496 | * @fini: Shut down PHY | |
497 | * @reconfigure: Reconfigure PHY (e.g. for new link parameters) | |
fdaa9aed SH |
498 | * @poll: Update @link_state and report whether it changed. |
499 | * Serialised by the mac_lock. | |
177dfcd8 BH |
500 | * @get_settings: Get ethtool settings. Serialised by the mac_lock. |
501 | * @set_settings: Set ethtool settings. Serialised by the mac_lock. | |
af4ad9bc | 502 | * @set_npage_adv: Set abilities advertised in (Extended) Next Page |
04cc8cac | 503 | * (only needed where AN bit is set in mmds) |
4f16c073 | 504 | * @test_alive: Test that PHY is 'alive' (online) |
c1c4f453 | 505 | * @test_name: Get the name of a PHY-specific test/result |
4f16c073 | 506 | * @run_tests: Run tests and record results as appropriate (offline). |
1796721a | 507 | * Flags are the ethtool tests flags. |
8ceee660 BH |
508 | */ |
509 | struct efx_phy_operations { | |
c1c4f453 | 510 | int (*probe) (struct efx_nic *efx); |
8ceee660 BH |
511 | int (*init) (struct efx_nic *efx); |
512 | void (*fini) (struct efx_nic *efx); | |
ff3b00a0 | 513 | void (*remove) (struct efx_nic *efx); |
d3245b28 | 514 | int (*reconfigure) (struct efx_nic *efx); |
fdaa9aed | 515 | bool (*poll) (struct efx_nic *efx); |
177dfcd8 BH |
516 | void (*get_settings) (struct efx_nic *efx, |
517 | struct ethtool_cmd *ecmd); | |
518 | int (*set_settings) (struct efx_nic *efx, | |
519 | struct ethtool_cmd *ecmd); | |
af4ad9bc | 520 | void (*set_npage_adv) (struct efx_nic *efx, u32); |
4f16c073 | 521 | int (*test_alive) (struct efx_nic *efx); |
c1c4f453 | 522 | const char *(*test_name) (struct efx_nic *efx, unsigned int index); |
1796721a | 523 | int (*run_tests) (struct efx_nic *efx, int *results, unsigned flags); |
8ceee660 BH |
524 | }; |
525 | ||
f8b87c17 BH |
526 | /** |
527 | * @enum efx_phy_mode - PHY operating mode flags | |
528 | * @PHY_MODE_NORMAL: on and should pass traffic | |
529 | * @PHY_MODE_TX_DISABLED: on with TX disabled | |
3e133c44 BH |
530 | * @PHY_MODE_LOW_POWER: set to low power through MDIO |
531 | * @PHY_MODE_OFF: switched off through external control | |
f8b87c17 BH |
532 | * @PHY_MODE_SPECIAL: on but will not pass traffic |
533 | */ | |
534 | enum efx_phy_mode { | |
535 | PHY_MODE_NORMAL = 0, | |
536 | PHY_MODE_TX_DISABLED = 1, | |
3e133c44 BH |
537 | PHY_MODE_LOW_POWER = 2, |
538 | PHY_MODE_OFF = 4, | |
f8b87c17 BH |
539 | PHY_MODE_SPECIAL = 8, |
540 | }; | |
541 | ||
542 | static inline bool efx_phy_mode_disabled(enum efx_phy_mode mode) | |
543 | { | |
8c8661e4 | 544 | return !!(mode & ~PHY_MODE_TX_DISABLED); |
f8b87c17 BH |
545 | } |
546 | ||
8ceee660 BH |
547 | /* |
548 | * Efx extended statistics | |
549 | * | |
550 | * Not all statistics are provided by all supported MACs. The purpose | |
551 | * is this structure is to contain the raw statistics provided by each | |
552 | * MAC. | |
553 | */ | |
554 | struct efx_mac_stats { | |
555 | u64 tx_bytes; | |
556 | u64 tx_good_bytes; | |
557 | u64 tx_bad_bytes; | |
558 | unsigned long tx_packets; | |
559 | unsigned long tx_bad; | |
560 | unsigned long tx_pause; | |
561 | unsigned long tx_control; | |
562 | unsigned long tx_unicast; | |
563 | unsigned long tx_multicast; | |
564 | unsigned long tx_broadcast; | |
565 | unsigned long tx_lt64; | |
566 | unsigned long tx_64; | |
567 | unsigned long tx_65_to_127; | |
568 | unsigned long tx_128_to_255; | |
569 | unsigned long tx_256_to_511; | |
570 | unsigned long tx_512_to_1023; | |
571 | unsigned long tx_1024_to_15xx; | |
572 | unsigned long tx_15xx_to_jumbo; | |
573 | unsigned long tx_gtjumbo; | |
574 | unsigned long tx_collision; | |
575 | unsigned long tx_single_collision; | |
576 | unsigned long tx_multiple_collision; | |
577 | unsigned long tx_excessive_collision; | |
578 | unsigned long tx_deferred; | |
579 | unsigned long tx_late_collision; | |
580 | unsigned long tx_excessive_deferred; | |
581 | unsigned long tx_non_tcpudp; | |
582 | unsigned long tx_mac_src_error; | |
583 | unsigned long tx_ip_src_error; | |
584 | u64 rx_bytes; | |
585 | u64 rx_good_bytes; | |
586 | u64 rx_bad_bytes; | |
587 | unsigned long rx_packets; | |
588 | unsigned long rx_good; | |
589 | unsigned long rx_bad; | |
590 | unsigned long rx_pause; | |
591 | unsigned long rx_control; | |
592 | unsigned long rx_unicast; | |
593 | unsigned long rx_multicast; | |
594 | unsigned long rx_broadcast; | |
595 | unsigned long rx_lt64; | |
596 | unsigned long rx_64; | |
597 | unsigned long rx_65_to_127; | |
598 | unsigned long rx_128_to_255; | |
599 | unsigned long rx_256_to_511; | |
600 | unsigned long rx_512_to_1023; | |
601 | unsigned long rx_1024_to_15xx; | |
602 | unsigned long rx_15xx_to_jumbo; | |
603 | unsigned long rx_gtjumbo; | |
604 | unsigned long rx_bad_lt64; | |
605 | unsigned long rx_bad_64_to_15xx; | |
606 | unsigned long rx_bad_15xx_to_jumbo; | |
607 | unsigned long rx_bad_gtjumbo; | |
608 | unsigned long rx_overflow; | |
609 | unsigned long rx_missed; | |
610 | unsigned long rx_false_carrier; | |
611 | unsigned long rx_symbol_error; | |
612 | unsigned long rx_align_error; | |
613 | unsigned long rx_length_error; | |
614 | unsigned long rx_internal_error; | |
615 | unsigned long rx_good_lt64; | |
616 | }; | |
617 | ||
618 | /* Number of bits used in a multicast filter hash address */ | |
619 | #define EFX_MCAST_HASH_BITS 8 | |
620 | ||
621 | /* Number of (single-bit) entries in a multicast filter hash */ | |
622 | #define EFX_MCAST_HASH_ENTRIES (1 << EFX_MCAST_HASH_BITS) | |
623 | ||
624 | /* An Efx multicast filter hash */ | |
625 | union efx_multicast_hash { | |
626 | u8 byte[EFX_MCAST_HASH_ENTRIES / 8]; | |
627 | efx_oword_t oword[EFX_MCAST_HASH_ENTRIES / sizeof(efx_oword_t) / 8]; | |
628 | }; | |
629 | ||
64eebcfd BH |
630 | struct efx_filter_state; |
631 | ||
8ceee660 BH |
632 | /** |
633 | * struct efx_nic - an Efx NIC | |
634 | * @name: Device name (net device name or bus id before net device registered) | |
635 | * @pci_dev: The PCI device | |
636 | * @type: Controller type attributes | |
637 | * @legacy_irq: IRQ number | |
94dec6a2 | 638 | * @legacy_irq_enabled: Are IRQs enabled on NIC (INT_EN_KER register)? |
8d9853d9 BH |
639 | * @workqueue: Workqueue for port reconfigures and the HW monitor. |
640 | * Work items do not hold and must not acquire RTNL. | |
6977dc63 | 641 | * @workqueue_name: Name of workqueue |
8ceee660 | 642 | * @reset_work: Scheduled reset workitem |
8ceee660 BH |
643 | * @membase_phys: Memory BAR value as physical address |
644 | * @membase: Memory BAR value | |
8ceee660 | 645 | * @interrupt_mode: Interrupt mode |
6fb70fd1 BH |
646 | * @irq_rx_adaptive: Adaptive IRQ moderation enabled for RX event queues |
647 | * @irq_rx_moderation: IRQ moderation time for RX event queues | |
62776d03 | 648 | * @msg_enable: Log message enable flags |
8ceee660 BH |
649 | * @state: Device state flag. Serialised by the rtnl_lock. |
650 | * @reset_pending: Pending reset method (normally RESET_TYPE_NONE) | |
651 | * @tx_queue: TX DMA queues | |
652 | * @rx_queue: RX DMA queues | |
653 | * @channel: Channels | |
4642610c | 654 | * @channel_name: Names for channels and their IRQs |
ecc910f5 SH |
655 | * @rxq_entries: Size of receive queues requested by user. |
656 | * @txq_entries: Size of transmit queues requested by user. | |
0484e0db | 657 | * @next_buffer_table: First available buffer table id |
28b581ab | 658 | * @n_channels: Number of channels in use |
a4900ac9 BH |
659 | * @n_rx_channels: Number of channels used for RX (= number of RX queues) |
660 | * @n_tx_channels: Number of channels used for TX | |
8ceee660 BH |
661 | * @rx_buffer_len: RX buffer length |
662 | * @rx_buffer_order: Order (log2) of number of pages for each RX buffer | |
78d4189d | 663 | * @rx_hash_key: Toeplitz hash key for RSS |
765c9f46 | 664 | * @rx_indir_table: Indirection table for RSS |
0484e0db BH |
665 | * @int_error_count: Number of internal errors seen recently |
666 | * @int_error_expire: Time at which error count will be expired | |
8ceee660 | 667 | * @irq_status: Interrupt status buffer |
c28884c5 | 668 | * @irq_zero_count: Number of legacy IRQs seen with queue flags == 0 |
63695459 | 669 | * @fatal_irq_level: IRQ level (bit number) used for serious errors |
76884835 | 670 | * @mtd_list: List of MTDs attached to the NIC |
25985edc | 671 | * @nic_data: Hardware dependent state |
8c8661e4 | 672 | * @mac_lock: MAC access lock. Protects @port_enabled, @phy_mode, |
e4abce85 | 673 | * efx_monitor() and efx_reconfigure_port() |
8ceee660 | 674 | * @port_enabled: Port enabled indicator. |
fdaa9aed SH |
675 | * Serialises efx_stop_all(), efx_start_all(), efx_monitor() and |
676 | * efx_mac_work() with kernel interfaces. Safe to read under any | |
677 | * one of the rtnl_lock, mac_lock, or netif_tx_lock, but all three must | |
678 | * be held to modify it. | |
8ceee660 BH |
679 | * @port_initialized: Port initialized? |
680 | * @net_dev: Operating system network device. Consider holding the rtnl lock | |
8ceee660 | 681 | * @stats_buffer: DMA buffer for statistics |
177dfcd8 | 682 | * @mac_op: MAC interface |
8ceee660 | 683 | * @phy_type: PHY type |
8ceee660 BH |
684 | * @phy_op: PHY interface |
685 | * @phy_data: PHY private data (including PHY-specific stats) | |
68e7f45e | 686 | * @mdio: PHY MDIO interface |
8880f4ec | 687 | * @mdio_bus: PHY MDIO bus ID (only used by Siena) |
8c8661e4 | 688 | * @phy_mode: PHY operating mode. Serialised by @mac_lock. |
d3245b28 | 689 | * @link_advertising: Autonegotiation advertising flags |
eb50c0d6 | 690 | * @link_state: Current state of the link |
8ceee660 BH |
691 | * @n_link_state_changes: Number of times the link has changed state |
692 | * @promiscuous: Promiscuous flag. Protected by netif_tx_lock. | |
693 | * @multicast_hash: Multicast hash table | |
04cc8cac | 694 | * @wanted_fc: Wanted flow control flags |
8be4f3e6 | 695 | * @mac_work: Work item for changing MAC promiscuity and multicast hash |
3273c2e8 BH |
696 | * @loopback_mode: Loopback status |
697 | * @loopback_modes: Supported loopback mode bitmask | |
698 | * @loopback_selftest: Offline self-test private state | |
ab28c12a BH |
699 | * @monitor_work: Hardware monitor workitem |
700 | * @biu_lock: BIU (bus interface unit) lock | |
701 | * @last_irq_cpu: Last CPU to handle interrupt. | |
702 | * This register is written with the SMP processor ID whenever an | |
703 | * interrupt is handled. It is used by efx_nic_test_interrupt() | |
704 | * to verify that an interrupt has occurred. | |
705 | * @n_rx_nodesc_drop_cnt: RX no descriptor drop count | |
706 | * @mac_stats: MAC statistics. These include all statistics the MACs | |
707 | * can provide. Generic code converts these into a standard | |
708 | * &struct net_device_stats. | |
709 | * @stats_lock: Statistics update lock. Serialises statistics fetches | |
8ceee660 | 710 | * |
754c653a | 711 | * This is stored in the private area of the &struct net_device. |
8ceee660 BH |
712 | */ |
713 | struct efx_nic { | |
ab28c12a BH |
714 | /* The following fields should be written very rarely */ |
715 | ||
8ceee660 BH |
716 | char name[IFNAMSIZ]; |
717 | struct pci_dev *pci_dev; | |
718 | const struct efx_nic_type *type; | |
719 | int legacy_irq; | |
94dec6a2 | 720 | bool legacy_irq_enabled; |
8ceee660 | 721 | struct workqueue_struct *workqueue; |
6977dc63 | 722 | char workqueue_name[16]; |
8ceee660 | 723 | struct work_struct reset_work; |
086ea356 | 724 | resource_size_t membase_phys; |
8ceee660 | 725 | void __iomem *membase; |
ab28c12a | 726 | |
8ceee660 | 727 | enum efx_int_mode interrupt_mode; |
6fb70fd1 BH |
728 | bool irq_rx_adaptive; |
729 | unsigned int irq_rx_moderation; | |
62776d03 | 730 | u32 msg_enable; |
8ceee660 | 731 | |
8ceee660 BH |
732 | enum nic_state state; |
733 | enum reset_type reset_pending; | |
734 | ||
8313aca3 | 735 | struct efx_channel *channel[EFX_MAX_CHANNELS]; |
efbc2d7c | 736 | char channel_name[EFX_MAX_CHANNELS][IFNAMSIZ + 6]; |
8ceee660 | 737 | |
ecc910f5 SH |
738 | unsigned rxq_entries; |
739 | unsigned txq_entries; | |
0484e0db | 740 | unsigned next_buffer_table; |
a4900ac9 BH |
741 | unsigned n_channels; |
742 | unsigned n_rx_channels; | |
97653431 | 743 | unsigned tx_channel_offset; |
a4900ac9 | 744 | unsigned n_tx_channels; |
8ceee660 BH |
745 | unsigned int rx_buffer_len; |
746 | unsigned int rx_buffer_order; | |
5d3a6fca | 747 | u8 rx_hash_key[40]; |
765c9f46 | 748 | u32 rx_indir_table[128]; |
8ceee660 | 749 | |
0484e0db BH |
750 | unsigned int_error_count; |
751 | unsigned long int_error_expire; | |
752 | ||
8ceee660 | 753 | struct efx_buffer irq_status; |
c28884c5 | 754 | unsigned irq_zero_count; |
63695459 | 755 | unsigned fatal_irq_level; |
8ceee660 | 756 | |
76884835 BH |
757 | #ifdef CONFIG_SFC_MTD |
758 | struct list_head mtd_list; | |
759 | #endif | |
4a5b504d | 760 | |
8880f4ec | 761 | void *nic_data; |
8ceee660 BH |
762 | |
763 | struct mutex mac_lock; | |
766ca0fa | 764 | struct work_struct mac_work; |
dc8cfa55 | 765 | bool port_enabled; |
8ceee660 | 766 | |
dc8cfa55 | 767 | bool port_initialized; |
8ceee660 | 768 | struct net_device *net_dev; |
8ceee660 | 769 | |
8ceee660 | 770 | struct efx_buffer stats_buffer; |
8ceee660 | 771 | |
6c8c2513 | 772 | const struct efx_mac_operations *mac_op; |
8ceee660 | 773 | |
c1c4f453 | 774 | unsigned int phy_type; |
6c8c2513 | 775 | const struct efx_phy_operations *phy_op; |
8ceee660 | 776 | void *phy_data; |
68e7f45e | 777 | struct mdio_if_info mdio; |
8880f4ec | 778 | unsigned int mdio_bus; |
f8b87c17 | 779 | enum efx_phy_mode phy_mode; |
8ceee660 | 780 | |
d3245b28 | 781 | u32 link_advertising; |
eb50c0d6 | 782 | struct efx_link_state link_state; |
8ceee660 BH |
783 | unsigned int n_link_state_changes; |
784 | ||
dc8cfa55 | 785 | bool promiscuous; |
8ceee660 | 786 | union efx_multicast_hash multicast_hash; |
04cc8cac | 787 | enum efx_fc_type wanted_fc; |
8ceee660 BH |
788 | |
789 | atomic_t rx_reset; | |
3273c2e8 | 790 | enum efx_loopback_mode loopback_mode; |
e58f69f4 | 791 | u64 loopback_modes; |
3273c2e8 BH |
792 | |
793 | void *loopback_selftest; | |
64eebcfd BH |
794 | |
795 | struct efx_filter_state *filter_state; | |
ab28c12a BH |
796 | |
797 | /* The following fields may be written more often */ | |
798 | ||
799 | struct delayed_work monitor_work ____cacheline_aligned_in_smp; | |
800 | spinlock_t biu_lock; | |
801 | volatile signed int last_irq_cpu; | |
802 | unsigned n_rx_nodesc_drop_cnt; | |
803 | struct efx_mac_stats mac_stats; | |
804 | spinlock_t stats_lock; | |
8ceee660 BH |
805 | }; |
806 | ||
55668611 BH |
807 | static inline int efx_dev_registered(struct efx_nic *efx) |
808 | { | |
809 | return efx->net_dev->reg_state == NETREG_REGISTERED; | |
810 | } | |
811 | ||
812 | /* Net device name, for inclusion in log messages if it has been registered. | |
813 | * Use efx->name not efx->net_dev->name so that races with (un)registration | |
814 | * are harmless. | |
815 | */ | |
816 | static inline const char *efx_dev_name(struct efx_nic *efx) | |
817 | { | |
818 | return efx_dev_registered(efx) ? efx->name : ""; | |
819 | } | |
820 | ||
8880f4ec BH |
821 | static inline unsigned int efx_port_num(struct efx_nic *efx) |
822 | { | |
3df95ce9 | 823 | return efx->net_dev->dev_id; |
8880f4ec BH |
824 | } |
825 | ||
8ceee660 BH |
826 | /** |
827 | * struct efx_nic_type - Efx device type definition | |
ef2b90ee BH |
828 | * @probe: Probe the controller |
829 | * @remove: Free resources allocated by probe() | |
830 | * @init: Initialise the controller | |
831 | * @fini: Shut down the controller | |
832 | * @monitor: Periodic function for polling link state and hardware monitor | |
833 | * @reset: Reset the controller hardware and possibly the PHY. This will | |
834 | * be called while the controller is uninitialised. | |
835 | * @probe_port: Probe the MAC and PHY | |
836 | * @remove_port: Free resources allocated by probe_port() | |
40641ed9 | 837 | * @handle_global_event: Handle a "global" event (may be %NULL) |
ef2b90ee BH |
838 | * @prepare_flush: Prepare the hardware for flushing the DMA queues |
839 | * @update_stats: Update statistics not provided by event handling | |
840 | * @start_stats: Start the regular fetching of statistics | |
841 | * @stop_stats: Stop the regular fetching of statistics | |
06629f07 | 842 | * @set_id_led: Set state of identifying LED or revert to automatic function |
ef2b90ee BH |
843 | * @push_irq_moderation: Apply interrupt moderation value |
844 | * @push_multicast_hash: Apply multicast hash table | |
d3245b28 | 845 | * @reconfigure_port: Push loopback/power/txdis changes to the MAC and PHY |
89c758fa BH |
846 | * @get_wol: Get WoL configuration from driver state |
847 | * @set_wol: Push WoL configuration to the NIC | |
848 | * @resume_wol: Synchronise WoL state between driver and MC (e.g. after resume) | |
9bfc4bb1 | 849 | * @test_registers: Test read/write functionality of control registers |
0aa3fbaa | 850 | * @test_nvram: Test validity of NVRAM contents |
b895d73e | 851 | * @default_mac_ops: efx_mac_operations to set at startup |
daeda630 | 852 | * @revision: Hardware architecture revision |
8ceee660 BH |
853 | * @mem_map_size: Memory BAR mapped size |
854 | * @txd_ptr_tbl_base: TX descriptor ring base address | |
855 | * @rxd_ptr_tbl_base: RX descriptor ring base address | |
856 | * @buf_tbl_base: Buffer table base address | |
857 | * @evq_ptr_tbl_base: Event queue pointer table base address | |
858 | * @evq_rptr_tbl_base: Event queue read-pointer table base address | |
8ceee660 | 859 | * @max_dma_mask: Maximum possible DMA mask |
39c9cf07 BH |
860 | * @rx_buffer_hash_size: Size of hash at start of RX buffer |
861 | * @rx_buffer_padding: Size of padding at end of RX buffer | |
8ceee660 BH |
862 | * @max_interrupt_mode: Highest capability interrupt mode supported |
863 | * from &enum efx_init_mode. | |
864 | * @phys_addr_channels: Number of channels with physically addressed | |
865 | * descriptors | |
0228f5cd BH |
866 | * @tx_dc_base: Base address in SRAM of TX queue descriptor caches |
867 | * @rx_dc_base: Base address in SRAM of RX queue descriptor caches | |
c383b537 BH |
868 | * @offload_features: net_device feature flags for protocol offload |
869 | * features implemented in hardware | |
eb9f6744 BH |
870 | * @reset_world_flags: Flags for additional components covered by |
871 | * reset method RESET_TYPE_WORLD | |
8ceee660 BH |
872 | */ |
873 | struct efx_nic_type { | |
ef2b90ee BH |
874 | int (*probe)(struct efx_nic *efx); |
875 | void (*remove)(struct efx_nic *efx); | |
876 | int (*init)(struct efx_nic *efx); | |
877 | void (*fini)(struct efx_nic *efx); | |
878 | void (*monitor)(struct efx_nic *efx); | |
879 | int (*reset)(struct efx_nic *efx, enum reset_type method); | |
880 | int (*probe_port)(struct efx_nic *efx); | |
881 | void (*remove_port)(struct efx_nic *efx); | |
40641ed9 | 882 | bool (*handle_global_event)(struct efx_channel *channel, efx_qword_t *); |
ef2b90ee BH |
883 | void (*prepare_flush)(struct efx_nic *efx); |
884 | void (*update_stats)(struct efx_nic *efx); | |
885 | void (*start_stats)(struct efx_nic *efx); | |
886 | void (*stop_stats)(struct efx_nic *efx); | |
06629f07 | 887 | void (*set_id_led)(struct efx_nic *efx, enum efx_led_mode mode); |
ef2b90ee BH |
888 | void (*push_irq_moderation)(struct efx_channel *channel); |
889 | void (*push_multicast_hash)(struct efx_nic *efx); | |
d3245b28 | 890 | int (*reconfigure_port)(struct efx_nic *efx); |
89c758fa BH |
891 | void (*get_wol)(struct efx_nic *efx, struct ethtool_wolinfo *wol); |
892 | int (*set_wol)(struct efx_nic *efx, u32 type); | |
893 | void (*resume_wol)(struct efx_nic *efx); | |
9bfc4bb1 | 894 | int (*test_registers)(struct efx_nic *efx); |
0aa3fbaa | 895 | int (*test_nvram)(struct efx_nic *efx); |
6c8c2513 | 896 | const struct efx_mac_operations *default_mac_ops; |
b895d73e | 897 | |
daeda630 | 898 | int revision; |
8ceee660 BH |
899 | unsigned int mem_map_size; |
900 | unsigned int txd_ptr_tbl_base; | |
901 | unsigned int rxd_ptr_tbl_base; | |
902 | unsigned int buf_tbl_base; | |
903 | unsigned int evq_ptr_tbl_base; | |
904 | unsigned int evq_rptr_tbl_base; | |
9bbd7d9a | 905 | u64 max_dma_mask; |
39c9cf07 | 906 | unsigned int rx_buffer_hash_size; |
8ceee660 BH |
907 | unsigned int rx_buffer_padding; |
908 | unsigned int max_interrupt_mode; | |
909 | unsigned int phys_addr_channels; | |
0228f5cd BH |
910 | unsigned int tx_dc_base; |
911 | unsigned int rx_dc_base; | |
04ed3e74 | 912 | u32 offload_features; |
eb9f6744 | 913 | u32 reset_world_flags; |
8ceee660 BH |
914 | }; |
915 | ||
916 | /************************************************************************** | |
917 | * | |
918 | * Prototypes and inline functions | |
919 | * | |
920 | *************************************************************************/ | |
921 | ||
f7d12cdc BH |
922 | static inline struct efx_channel * |
923 | efx_get_channel(struct efx_nic *efx, unsigned index) | |
924 | { | |
925 | EFX_BUG_ON_PARANOID(index >= efx->n_channels); | |
8313aca3 | 926 | return efx->channel[index]; |
f7d12cdc BH |
927 | } |
928 | ||
8ceee660 BH |
929 | /* Iterate over all used channels */ |
930 | #define efx_for_each_channel(_channel, _efx) \ | |
8313aca3 BH |
931 | for (_channel = (_efx)->channel[0]; \ |
932 | _channel; \ | |
933 | _channel = (_channel->channel + 1 < (_efx)->n_channels) ? \ | |
934 | (_efx)->channel[_channel->channel + 1] : NULL) | |
8ceee660 | 935 | |
97653431 BH |
936 | static inline struct efx_tx_queue * |
937 | efx_get_tx_queue(struct efx_nic *efx, unsigned index, unsigned type) | |
938 | { | |
939 | EFX_BUG_ON_PARANOID(index >= efx->n_tx_channels || | |
940 | type >= EFX_TXQ_TYPES); | |
941 | return &efx->channel[efx->tx_channel_offset + index]->tx_queue[type]; | |
942 | } | |
f7d12cdc | 943 | |
525da907 BH |
944 | static inline bool efx_channel_has_tx_queues(struct efx_channel *channel) |
945 | { | |
946 | return channel->channel - channel->efx->tx_channel_offset < | |
947 | channel->efx->n_tx_channels; | |
948 | } | |
949 | ||
f7d12cdc BH |
950 | static inline struct efx_tx_queue * |
951 | efx_channel_get_tx_queue(struct efx_channel *channel, unsigned type) | |
952 | { | |
525da907 BH |
953 | EFX_BUG_ON_PARANOID(!efx_channel_has_tx_queues(channel) || |
954 | type >= EFX_TXQ_TYPES); | |
955 | return &channel->tx_queue[type]; | |
f7d12cdc | 956 | } |
8ceee660 | 957 | |
94b274bf BH |
958 | static inline bool efx_tx_queue_used(struct efx_tx_queue *tx_queue) |
959 | { | |
960 | return !(tx_queue->efx->net_dev->num_tc < 2 && | |
961 | tx_queue->queue & EFX_TXQ_TYPE_HIGHPRI); | |
962 | } | |
963 | ||
8ceee660 BH |
964 | /* Iterate over all TX queues belonging to a channel */ |
965 | #define efx_for_each_channel_tx_queue(_tx_queue, _channel) \ | |
525da907 BH |
966 | if (!efx_channel_has_tx_queues(_channel)) \ |
967 | ; \ | |
968 | else \ | |
969 | for (_tx_queue = (_channel)->tx_queue; \ | |
94b274bf BH |
970 | _tx_queue < (_channel)->tx_queue + EFX_TXQ_TYPES && \ |
971 | efx_tx_queue_used(_tx_queue); \ | |
525da907 | 972 | _tx_queue++) |
8ceee660 | 973 | |
94b274bf BH |
974 | /* Iterate over all possible TX queues belonging to a channel */ |
975 | #define efx_for_each_possible_channel_tx_queue(_tx_queue, _channel) \ | |
976 | for (_tx_queue = (_channel)->tx_queue; \ | |
977 | _tx_queue < (_channel)->tx_queue + EFX_TXQ_TYPES; \ | |
978 | _tx_queue++) | |
979 | ||
f7d12cdc BH |
980 | static inline struct efx_rx_queue * |
981 | efx_get_rx_queue(struct efx_nic *efx, unsigned index) | |
982 | { | |
983 | EFX_BUG_ON_PARANOID(index >= efx->n_rx_channels); | |
8313aca3 | 984 | return &efx->channel[index]->rx_queue; |
f7d12cdc BH |
985 | } |
986 | ||
525da907 BH |
987 | static inline bool efx_channel_has_rx_queue(struct efx_channel *channel) |
988 | { | |
989 | return channel->channel < channel->efx->n_rx_channels; | |
990 | } | |
991 | ||
f7d12cdc BH |
992 | static inline struct efx_rx_queue * |
993 | efx_channel_get_rx_queue(struct efx_channel *channel) | |
994 | { | |
525da907 BH |
995 | EFX_BUG_ON_PARANOID(!efx_channel_has_rx_queue(channel)); |
996 | return &channel->rx_queue; | |
f7d12cdc BH |
997 | } |
998 | ||
8ceee660 BH |
999 | /* Iterate over all RX queues belonging to a channel */ |
1000 | #define efx_for_each_channel_rx_queue(_rx_queue, _channel) \ | |
525da907 BH |
1001 | if (!efx_channel_has_rx_queue(_channel)) \ |
1002 | ; \ | |
1003 | else \ | |
1004 | for (_rx_queue = &(_channel)->rx_queue; \ | |
1005 | _rx_queue; \ | |
1006 | _rx_queue = NULL) | |
8ceee660 | 1007 | |
ba1e8a35 BH |
1008 | static inline struct efx_channel * |
1009 | efx_rx_queue_channel(struct efx_rx_queue *rx_queue) | |
1010 | { | |
8313aca3 | 1011 | return container_of(rx_queue, struct efx_channel, rx_queue); |
ba1e8a35 BH |
1012 | } |
1013 | ||
1014 | static inline int efx_rx_queue_index(struct efx_rx_queue *rx_queue) | |
1015 | { | |
8313aca3 | 1016 | return efx_rx_queue_channel(rx_queue)->channel; |
ba1e8a35 BH |
1017 | } |
1018 | ||
8ceee660 BH |
1019 | /* Returns a pointer to the specified receive buffer in the RX |
1020 | * descriptor queue. | |
1021 | */ | |
1022 | static inline struct efx_rx_buffer *efx_rx_buffer(struct efx_rx_queue *rx_queue, | |
1023 | unsigned int index) | |
1024 | { | |
807540ba | 1025 | return &rx_queue->buffer[index]; |
8ceee660 BH |
1026 | } |
1027 | ||
1028 | /* Set bit in a little-endian bitfield */ | |
18c2fc04 | 1029 | static inline void set_bit_le(unsigned nr, unsigned char *addr) |
8ceee660 BH |
1030 | { |
1031 | addr[nr / 8] |= (1 << (nr % 8)); | |
1032 | } | |
1033 | ||
1034 | /* Clear bit in a little-endian bitfield */ | |
18c2fc04 | 1035 | static inline void clear_bit_le(unsigned nr, unsigned char *addr) |
8ceee660 BH |
1036 | { |
1037 | addr[nr / 8] &= ~(1 << (nr % 8)); | |
1038 | } | |
1039 | ||
1040 | ||
1041 | /** | |
1042 | * EFX_MAX_FRAME_LEN - calculate maximum frame length | |
1043 | * | |
1044 | * This calculates the maximum frame length that will be used for a | |
1045 | * given MTU. The frame length will be equal to the MTU plus a | |
1046 | * constant amount of header space and padding. This is the quantity | |
1047 | * that the net driver will program into the MAC as the maximum frame | |
1048 | * length. | |
1049 | * | |
754c653a | 1050 | * The 10G MAC requires 8-byte alignment on the frame |
8ceee660 | 1051 | * length, so we round up to the nearest 8. |
cc11763b BH |
1052 | * |
1053 | * Re-clocking by the XGXS on RX can reduce an IPG to 32 bits (half an | |
1054 | * XGMII cycle). If the frame length reaches the maximum value in the | |
1055 | * same cycle, the XMAC can miss the IPG altogether. We work around | |
1056 | * this by adding a further 16 bytes. | |
8ceee660 BH |
1057 | */ |
1058 | #define EFX_MAX_FRAME_LEN(mtu) \ | |
cc11763b | 1059 | ((((mtu) + ETH_HLEN + VLAN_HLEN + 4/* FCS */ + 7) & ~7) + 16) |
8ceee660 BH |
1060 | |
1061 | ||
1062 | #endif /* EFX_NET_DRIVER_H */ |