xref: /openbmc/linux/drivers/s390/net/qeth_core.h (revision d2999e1b)
1 /*
2  *    Copyright IBM Corp. 2007
3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4  *		 Frank Pavlic <fpavlic@de.ibm.com>,
5  *		 Thomas Spatzier <tspat@de.ibm.com>,
6  *		 Frank Blaschka <frank.blaschka@de.ibm.com>
7  */
8 
9 #ifndef __QETH_CORE_H__
10 #define __QETH_CORE_H__
11 
12 #include <linux/if.h>
13 #include <linux/if_arp.h>
14 #include <linux/etherdevice.h>
15 #include <linux/if_vlan.h>
16 #include <linux/ctype.h>
17 #include <linux/in6.h>
18 #include <linux/bitops.h>
19 #include <linux/seq_file.h>
20 #include <linux/ethtool.h>
21 
22 #include <net/ipv6.h>
23 #include <net/if_inet6.h>
24 #include <net/addrconf.h>
25 
26 #include <asm/debug.h>
27 #include <asm/qdio.h>
28 #include <asm/ccwdev.h>
29 #include <asm/ccwgroup.h>
30 #include <asm/sysinfo.h>
31 
32 #include "qeth_core_mpc.h"
33 
34 /**
35  * Debug Facility stuff
36  */
37 enum qeth_dbf_names {
38 	QETH_DBF_SETUP,
39 	QETH_DBF_MSG,
40 	QETH_DBF_CTRL,
41 	QETH_DBF_INFOS	/* must be last element */
42 };
43 
44 struct qeth_dbf_info {
45 	char name[DEBUG_MAX_NAME_LEN];
46 	int pages;
47 	int areas;
48 	int len;
49 	int level;
50 	struct debug_view *view;
51 	debug_info_t *id;
52 };
53 
54 #define QETH_DBF_CTRL_LEN 256
55 
56 #define QETH_DBF_TEXT(name, level, text) \
57 	debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text)
58 
59 #define QETH_DBF_HEX(name, level, addr, len) \
60 	debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len)
61 
62 #define QETH_DBF_MESSAGE(level, text...) \
63 	debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text)
64 
65 #define QETH_DBF_TEXT_(name, level, text...) \
66 	qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text)
67 
68 #define QETH_CARD_TEXT(card, level, text) \
69 	debug_text_event(card->debug, level, text)
70 
71 #define QETH_CARD_HEX(card, level, addr, len) \
72 	debug_event(card->debug, level, (void *)(addr), len)
73 
74 #define QETH_CARD_MESSAGE(card, text...) \
75 	debug_sprintf_event(card->debug, level, text)
76 
77 #define QETH_CARD_TEXT_(card, level, text...) \
78 	qeth_dbf_longtext(card->debug, level, text)
79 
80 #define SENSE_COMMAND_REJECT_BYTE 0
81 #define SENSE_COMMAND_REJECT_FLAG 0x80
82 #define SENSE_RESETTING_EVENT_BYTE 1
83 #define SENSE_RESETTING_EVENT_FLAG 0x80
84 
85 /*
86  * Common IO related definitions
87  */
88 #define CARD_RDEV(card) card->read.ccwdev
89 #define CARD_WDEV(card) card->write.ccwdev
90 #define CARD_DDEV(card) card->data.ccwdev
91 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev)
92 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev)
93 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev)
94 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev)
95 #define CHANNEL_ID(channel) dev_name(&channel->ccwdev->dev)
96 
97 /**
98  * card stuff
99  */
100 struct qeth_perf_stats {
101 	unsigned int bufs_rec;
102 	unsigned int bufs_sent;
103 
104 	unsigned int skbs_sent_pack;
105 	unsigned int bufs_sent_pack;
106 
107 	unsigned int sc_dp_p;
108 	unsigned int sc_p_dp;
109 	/* qdio_cq_handler: number of times called, time spent in */
110 	__u64 cq_start_time;
111 	unsigned int cq_cnt;
112 	unsigned int cq_time;
113 	/* qdio_input_handler: number of times called, time spent in */
114 	__u64 inbound_start_time;
115 	unsigned int inbound_cnt;
116 	unsigned int inbound_time;
117 	/* qeth_send_packet: number of times called, time spent in */
118 	__u64 outbound_start_time;
119 	unsigned int outbound_cnt;
120 	unsigned int outbound_time;
121 	/* qdio_output_handler: number of times called, time spent in */
122 	__u64 outbound_handler_start_time;
123 	unsigned int outbound_handler_cnt;
124 	unsigned int outbound_handler_time;
125 	/* number of calls to and time spent in do_QDIO for inbound queue */
126 	__u64 inbound_do_qdio_start_time;
127 	unsigned int inbound_do_qdio_cnt;
128 	unsigned int inbound_do_qdio_time;
129 	/* number of calls to and time spent in do_QDIO for outbound queues */
130 	__u64 outbound_do_qdio_start_time;
131 	unsigned int outbound_do_qdio_cnt;
132 	unsigned int outbound_do_qdio_time;
133 	unsigned int large_send_bytes;
134 	unsigned int large_send_cnt;
135 	unsigned int sg_skbs_sent;
136 	unsigned int sg_frags_sent;
137 	/* initial values when measuring starts */
138 	unsigned long initial_rx_packets;
139 	unsigned long initial_tx_packets;
140 	/* inbound scatter gather data */
141 	unsigned int sg_skbs_rx;
142 	unsigned int sg_frags_rx;
143 	unsigned int sg_alloc_page_rx;
144 	unsigned int tx_csum;
145 	unsigned int tx_lin;
146 };
147 
148 /* Routing stuff */
149 struct qeth_routing_info {
150 	enum qeth_routing_types type;
151 };
152 
153 /* IPA stuff */
154 struct qeth_ipa_info {
155 	__u32 supported_funcs;
156 	__u32 enabled_funcs;
157 };
158 
159 /* SETBRIDGEPORT stuff */
160 enum qeth_sbp_roles {
161 	QETH_SBP_ROLE_NONE	= 0,
162 	QETH_SBP_ROLE_PRIMARY	= 1,
163 	QETH_SBP_ROLE_SECONDARY	= 2,
164 };
165 
166 enum qeth_sbp_states {
167 	QETH_SBP_STATE_INACTIVE	= 0,
168 	QETH_SBP_STATE_STANDBY	= 1,
169 	QETH_SBP_STATE_ACTIVE	= 2,
170 };
171 
172 #define QETH_SBP_HOST_NOTIFICATION 1
173 
174 struct qeth_sbp_info {
175 	__u32 supported_funcs;
176 	enum qeth_sbp_roles role;
177 	__u32 hostnotification:1;
178 };
179 
180 static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa,
181 		enum qeth_ipa_funcs func)
182 {
183 	return (ipa->supported_funcs & func);
184 }
185 
186 static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
187 		enum qeth_ipa_funcs func)
188 {
189 	return (ipa->supported_funcs & ipa->enabled_funcs & func);
190 }
191 
192 #define qeth_adp_supported(c, f) \
193 	qeth_is_ipa_supported(&c->options.adp, f)
194 #define qeth_adp_enabled(c, f) \
195 	qeth_is_ipa_enabled(&c->options.adp, f)
196 #define qeth_is_supported(c, f) \
197 	qeth_is_ipa_supported(&c->options.ipa4, f)
198 #define qeth_is_enabled(c, f) \
199 	qeth_is_ipa_enabled(&c->options.ipa4, f)
200 #define qeth_is_supported6(c, f) \
201 	qeth_is_ipa_supported(&c->options.ipa6, f)
202 #define qeth_is_enabled6(c, f) \
203 	qeth_is_ipa_enabled(&c->options.ipa6, f)
204 #define qeth_is_ipafunc_supported(c, prot, f) \
205 	 ((prot == QETH_PROT_IPV6) ? \
206 		qeth_is_supported6(c, f) : qeth_is_supported(c, f))
207 #define qeth_is_ipafunc_enabled(c, prot, f) \
208 	 ((prot == QETH_PROT_IPV6) ? \
209 		qeth_is_enabled6(c, f) : qeth_is_enabled(c, f))
210 
211 #define QETH_IDX_FUNC_LEVEL_OSD		 0x0101
212 #define QETH_IDX_FUNC_LEVEL_IQD		 0x4108
213 
214 #define QETH_MODELLIST_ARRAY \
215 	{{0x1731, 0x01, 0x1732, QETH_CARD_TYPE_OSD, QETH_MAX_QUEUES, 0}, \
216 	 {0x1731, 0x05, 0x1732, QETH_CARD_TYPE_IQD, QETH_MAX_QUEUES, 0x103}, \
217 	 {0x1731, 0x06, 0x1732, QETH_CARD_TYPE_OSN, QETH_MAX_QUEUES, 0}, \
218 	 {0x1731, 0x02, 0x1732, QETH_CARD_TYPE_OSM, QETH_MAX_QUEUES, 0}, \
219 	 {0x1731, 0x02, 0x1732, QETH_CARD_TYPE_OSX, QETH_MAX_QUEUES, 0}, \
220 	 {0, 0, 0, 0, 0, 0} }
221 #define QETH_CU_TYPE_IND	0
222 #define QETH_CU_MODEL_IND	1
223 #define QETH_DEV_TYPE_IND	2
224 #define QETH_DEV_MODEL_IND	3
225 #define QETH_QUEUE_NO_IND	4
226 #define QETH_MULTICAST_IND	5
227 
228 #define QETH_REAL_CARD		1
229 #define QETH_VLAN_CARD		2
230 #define QETH_BUFSIZE		4096
231 
232 /**
233  * some more defs
234  */
235 #define QETH_TX_TIMEOUT		100 * HZ
236 #define QETH_RCD_TIMEOUT	60 * HZ
237 #define QETH_RECLAIM_WORK_TIME	HZ
238 #define QETH_HEADER_SIZE	32
239 #define QETH_MAX_PORTNO		15
240 
241 /*IPv6 address autoconfiguration stuff*/
242 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
243 #define UNIQUE_ID_NOT_BY_CARD		0x10000
244 
245 /*****************************************************************************/
246 /* QDIO queue and buffer handling                                            */
247 /*****************************************************************************/
248 #define QETH_MAX_QUEUES 4
249 #define QETH_IN_BUF_SIZE_DEFAULT 65536
250 #define QETH_IN_BUF_COUNT_DEFAULT 64
251 #define QETH_IN_BUF_COUNT_HSDEFAULT 128
252 #define QETH_IN_BUF_COUNT_MIN 8
253 #define QETH_IN_BUF_COUNT_MAX 128
254 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
255 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
256 		 ((card)->qdio.in_buf_pool.buf_count / 2)
257 
258 /* buffers we have to be behind before we get a PCI */
259 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
260 /*enqueued free buffers left before we get a PCI*/
261 #define QETH_PCI_THRESHOLD_B(card) 0
262 /*not used unless the microcode gets patched*/
263 #define QETH_PCI_TIMER_VALUE(card) 3
264 
265 /* priority queing */
266 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
267 #define QETH_DEFAULT_QUEUE    2
268 #define QETH_NO_PRIO_QUEUEING 0
269 #define QETH_PRIO_Q_ING_PREC  1
270 #define QETH_PRIO_Q_ING_TOS   2
271 #define QETH_PRIO_Q_ING_SKB   3
272 #define QETH_PRIO_Q_ING_VLAN  4
273 
274 /* Packing */
275 #define QETH_LOW_WATERMARK_PACK  2
276 #define QETH_HIGH_WATERMARK_PACK 5
277 #define QETH_WATERMARK_PACK_FUZZ 1
278 
279 #define QETH_IP_HEADER_SIZE 40
280 
281 /* large receive scatter gather copy break */
282 #define QETH_RX_SG_CB (PAGE_SIZE >> 1)
283 #define QETH_RX_PULL_LEN 256
284 
285 struct qeth_hdr_layer3 {
286 	__u8  id;
287 	__u8  flags;
288 	__u16 inbound_checksum; /*TSO:__u16 seqno */
289 	__u32 token;		/*TSO: __u32 reserved */
290 	__u16 length;
291 	__u8  vlan_prio;
292 	__u8  ext_flags;
293 	__u16 vlan_id;
294 	__u16 frame_offset;
295 	__u8  dest_addr[16];
296 } __attribute__ ((packed));
297 
298 struct qeth_hdr_layer2 {
299 	__u8 id;
300 	__u8 flags[3];
301 	__u8 port_no;
302 	__u8 hdr_length;
303 	__u16 pkt_length;
304 	__u16 seq_no;
305 	__u16 vlan_id;
306 	__u32 reserved;
307 	__u8 reserved2[16];
308 } __attribute__ ((packed));
309 
310 struct qeth_hdr_osn {
311 	__u8 id;
312 	__u8 reserved;
313 	__u16 seq_no;
314 	__u16 reserved2;
315 	__u16 control_flags;
316 	__u16 pdu_length;
317 	__u8 reserved3[18];
318 	__u32 ccid;
319 } __attribute__ ((packed));
320 
321 struct qeth_hdr {
322 	union {
323 		struct qeth_hdr_layer2 l2;
324 		struct qeth_hdr_layer3 l3;
325 		struct qeth_hdr_osn    osn;
326 	} hdr;
327 } __attribute__ ((packed));
328 
329 /*TCP Segmentation Offload header*/
330 struct qeth_hdr_ext_tso {
331 	__u16 hdr_tot_len;
332 	__u8  imb_hdr_no;
333 	__u8  reserved;
334 	__u8  hdr_type;
335 	__u8  hdr_version;
336 	__u16 hdr_len;
337 	__u32 payload_len;
338 	__u16 mss;
339 	__u16 dg_hdr_len;
340 	__u8  padding[16];
341 } __attribute__ ((packed));
342 
343 struct qeth_hdr_tso {
344 	struct qeth_hdr hdr;	/*hdr->hdr.l3.xxx*/
345 	struct qeth_hdr_ext_tso ext;
346 } __attribute__ ((packed));
347 
348 
349 /* flags for qeth_hdr.flags */
350 #define QETH_HDR_PASSTHRU 0x10
351 #define QETH_HDR_IPV6     0x80
352 #define QETH_HDR_CAST_MASK 0x07
353 enum qeth_cast_flags {
354 	QETH_CAST_UNICAST   = 0x06,
355 	QETH_CAST_MULTICAST = 0x04,
356 	QETH_CAST_BROADCAST = 0x05,
357 	QETH_CAST_ANYCAST   = 0x07,
358 	QETH_CAST_NOCAST    = 0x00,
359 };
360 
361 enum qeth_layer2_frame_flags {
362 	QETH_LAYER2_FLAG_MULTICAST = 0x01,
363 	QETH_LAYER2_FLAG_BROADCAST = 0x02,
364 	QETH_LAYER2_FLAG_UNICAST   = 0x04,
365 	QETH_LAYER2_FLAG_VLAN      = 0x10,
366 };
367 
368 enum qeth_header_ids {
369 	QETH_HEADER_TYPE_LAYER3 = 0x01,
370 	QETH_HEADER_TYPE_LAYER2 = 0x02,
371 	QETH_HEADER_TYPE_TSO	= 0x03,
372 	QETH_HEADER_TYPE_OSN    = 0x04,
373 };
374 /* flags for qeth_hdr.ext_flags */
375 #define QETH_HDR_EXT_VLAN_FRAME       0x01
376 #define QETH_HDR_EXT_TOKEN_ID         0x02
377 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
378 #define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
379 #define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
380 #define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
381 #define QETH_HDR_EXT_UDP	      0x40 /*bit off for TCP*/
382 
383 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
384 {
385 	return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
386 }
387 
388 enum qeth_qdio_buffer_states {
389 	/*
390 	 * inbound: read out by driver; owned by hardware in order to be filled
391 	 * outbound: owned by driver in order to be filled
392 	 */
393 	QETH_QDIO_BUF_EMPTY,
394 	/*
395 	 * inbound: filled by hardware; owned by driver in order to be read out
396 	 * outbound: filled by driver; owned by hardware in order to be sent
397 	 */
398 	QETH_QDIO_BUF_PRIMED,
399 	/*
400 	 * inbound: not applicable
401 	 * outbound: identified to be pending in TPQ
402 	 */
403 	QETH_QDIO_BUF_PENDING,
404 	/*
405 	 * inbound: not applicable
406 	 * outbound: found in completion queue
407 	 */
408 	QETH_QDIO_BUF_IN_CQ,
409 	/*
410 	 * inbound: not applicable
411 	 * outbound: handled via transfer pending / completion queue
412 	 */
413 	QETH_QDIO_BUF_HANDLED_DELAYED,
414 };
415 
416 enum qeth_qdio_info_states {
417 	QETH_QDIO_UNINITIALIZED,
418 	QETH_QDIO_ALLOCATED,
419 	QETH_QDIO_ESTABLISHED,
420 	QETH_QDIO_CLEANING
421 };
422 
423 struct qeth_buffer_pool_entry {
424 	struct list_head list;
425 	struct list_head init_list;
426 	void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
427 };
428 
429 struct qeth_qdio_buffer_pool {
430 	struct list_head entry_list;
431 	int buf_count;
432 };
433 
434 struct qeth_qdio_buffer {
435 	struct qdio_buffer *buffer;
436 	/* the buffer pool entry currently associated to this buffer */
437 	struct qeth_buffer_pool_entry *pool_entry;
438 	struct sk_buff *rx_skb;
439 };
440 
441 struct qeth_qdio_q {
442 	struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
443 	struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
444 	int next_buf_to_init;
445 } __attribute__ ((aligned(256)));
446 
447 struct qeth_qdio_out_buffer {
448 	struct qdio_buffer *buffer;
449 	atomic_t state;
450 	int next_element_to_fill;
451 	struct sk_buff_head skb_list;
452 	int is_header[16];
453 
454 	struct qaob *aob;
455 	struct qeth_qdio_out_q *q;
456 	struct qeth_qdio_out_buffer *next_pending;
457 };
458 
459 struct qeth_card;
460 
461 enum qeth_out_q_states {
462        QETH_OUT_Q_UNLOCKED,
463        QETH_OUT_Q_LOCKED,
464        QETH_OUT_Q_LOCKED_FLUSH,
465 };
466 
467 struct qeth_qdio_out_q {
468 	struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
469 	struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
470 	struct qdio_outbuf_state *bufstates; /* convenience pointer */
471 	int queue_no;
472 	struct qeth_card *card;
473 	atomic_t state;
474 	int do_pack;
475 	/*
476 	 * index of buffer to be filled by driver; state EMPTY or PACKING
477 	 */
478 	int next_buf_to_fill;
479 	/*
480 	 * number of buffers that are currently filled (PRIMED)
481 	 * -> these buffers are hardware-owned
482 	 */
483 	atomic_t used_buffers;
484 	/* indicates whether PCI flag must be set (or if one is outstanding) */
485 	atomic_t set_pci_flags_count;
486 } __attribute__ ((aligned(256)));
487 
488 struct qeth_qdio_info {
489 	atomic_t state;
490 	/* input */
491 	int no_in_queues;
492 	struct qeth_qdio_q *in_q;
493 	struct qeth_qdio_q *c_q;
494 	struct qeth_qdio_buffer_pool in_buf_pool;
495 	struct qeth_qdio_buffer_pool init_pool;
496 	int in_buf_size;
497 
498 	/* output */
499 	int no_out_queues;
500 	struct qeth_qdio_out_q **out_qs;
501 	struct qdio_outbuf_state *out_bufstates;
502 
503 	/* priority queueing */
504 	int do_prio_queueing;
505 	int default_out_queue;
506 };
507 
508 enum qeth_send_errors {
509 	QETH_SEND_ERROR_NONE,
510 	QETH_SEND_ERROR_LINK_FAILURE,
511 	QETH_SEND_ERROR_RETRY,
512 	QETH_SEND_ERROR_KICK_IT,
513 };
514 
515 #define QETH_ETH_MAC_V4      0x0100 /* like v4 */
516 #define QETH_ETH_MAC_V6      0x3333 /* like v6 */
517 /* tr mc mac is longer, but that will be enough to detect mc frames */
518 #define QETH_TR_MAC_NC       0xc000 /* non-canonical */
519 #define QETH_TR_MAC_C        0x0300 /* canonical */
520 
521 #define DEFAULT_ADD_HHLEN 0
522 #define MAX_ADD_HHLEN 1024
523 
524 /**
525  * buffer stuff for read channel
526  */
527 #define QETH_CMD_BUFFER_NO	8
528 
529 /**
530  *  channel state machine
531  */
532 enum qeth_channel_states {
533 	CH_STATE_UP,
534 	CH_STATE_DOWN,
535 	CH_STATE_ACTIVATING,
536 	CH_STATE_HALTED,
537 	CH_STATE_STOPPED,
538 	CH_STATE_RCD,
539 	CH_STATE_RCD_DONE,
540 };
541 /**
542  * card state machine
543  */
544 enum qeth_card_states {
545 	CARD_STATE_DOWN,
546 	CARD_STATE_HARDSETUP,
547 	CARD_STATE_SOFTSETUP,
548 	CARD_STATE_UP,
549 	CARD_STATE_RECOVER,
550 };
551 
552 /**
553  * Protocol versions
554  */
555 enum qeth_prot_versions {
556 	QETH_PROT_IPV4 = 0x0004,
557 	QETH_PROT_IPV6 = 0x0006,
558 };
559 
560 enum qeth_ip_types {
561 	QETH_IP_TYPE_NORMAL,
562 	QETH_IP_TYPE_VIPA,
563 	QETH_IP_TYPE_RXIP,
564 	QETH_IP_TYPE_DEL_ALL_MC,
565 };
566 
567 enum qeth_cmd_buffer_state {
568 	BUF_STATE_FREE,
569 	BUF_STATE_LOCKED,
570 	BUF_STATE_PROCESSED,
571 };
572 
573 enum qeth_cq {
574 	QETH_CQ_DISABLED = 0,
575 	QETH_CQ_ENABLED = 1,
576 	QETH_CQ_NOTAVAILABLE = 2,
577 };
578 
579 struct qeth_ipato {
580 	int enabled;
581 	int invert4;
582 	int invert6;
583 	struct list_head entries;
584 };
585 
586 struct qeth_channel;
587 
588 struct qeth_cmd_buffer {
589 	enum qeth_cmd_buffer_state state;
590 	struct qeth_channel *channel;
591 	unsigned char *data;
592 	int rc;
593 	void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
594 };
595 
596 /**
597  * definition of a qeth channel, used for read and write
598  */
599 struct qeth_channel {
600 	enum qeth_channel_states state;
601 	struct ccw1 ccw;
602 	spinlock_t iob_lock;
603 	wait_queue_head_t wait_q;
604 	struct tasklet_struct irq_tasklet;
605 	struct ccw_device *ccwdev;
606 /*command buffer for control data*/
607 	struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
608 	atomic_t irq_pending;
609 	int io_buf_no;
610 	int buf_no;
611 };
612 
613 /**
614  *  OSA card related definitions
615  */
616 struct qeth_token {
617 	__u32 issuer_rm_w;
618 	__u32 issuer_rm_r;
619 	__u32 cm_filter_w;
620 	__u32 cm_filter_r;
621 	__u32 cm_connection_w;
622 	__u32 cm_connection_r;
623 	__u32 ulp_filter_w;
624 	__u32 ulp_filter_r;
625 	__u32 ulp_connection_w;
626 	__u32 ulp_connection_r;
627 };
628 
629 struct qeth_seqno {
630 	__u32 trans_hdr;
631 	__u32 pdu_hdr;
632 	__u32 pdu_hdr_ack;
633 	__u16 ipa;
634 	__u32 pkt_seqno;
635 };
636 
637 struct qeth_reply {
638 	struct list_head list;
639 	wait_queue_head_t wait_q;
640 	int (*callback)(struct qeth_card *, struct qeth_reply *,
641 		unsigned long);
642 	u32 seqno;
643 	unsigned long offset;
644 	atomic_t received;
645 	int rc;
646 	void *param;
647 	struct qeth_card *card;
648 	atomic_t refcnt;
649 };
650 
651 
652 struct qeth_card_blkt {
653 	int time_total;
654 	int inter_packet;
655 	int inter_packet_jumbo;
656 };
657 
658 #define QETH_BROADCAST_WITH_ECHO    0x01
659 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
660 #define QETH_LAYER2_MAC_READ	    0x01
661 #define QETH_LAYER2_MAC_REGISTERED  0x02
662 struct qeth_card_info {
663 	unsigned short unit_addr2;
664 	unsigned short cula;
665 	unsigned short chpid;
666 	__u16 func_level;
667 	char mcl_level[QETH_MCL_LENGTH + 1];
668 	int guestlan;
669 	int mac_bits;
670 	int portname_required;
671 	int portno;
672 	char portname[9];
673 	enum qeth_card_types type;
674 	enum qeth_link_types link_type;
675 	int is_multicast_different;
676 	int initial_mtu;
677 	int max_mtu;
678 	int broadcast_capable;
679 	int unique_id;
680 	struct qeth_card_blkt blkt;
681 	__u32 csum_mask;
682 	__u32 tx_csum_mask;
683 	enum qeth_ipa_promisc_modes promisc_mode;
684 	__u32 diagass_support;
685 	__u32 hwtrap;
686 };
687 
688 struct qeth_card_options {
689 	struct qeth_routing_info route4;
690 	struct qeth_ipa_info ipa4;
691 	struct qeth_ipa_info adp; /*Adapter parameters*/
692 	struct qeth_routing_info route6;
693 	struct qeth_ipa_info ipa6;
694 	struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
695 	int fake_broadcast;
696 	int add_hhlen;
697 	int layer2;
698 	int performance_stats;
699 	int rx_sg_cb;
700 	enum qeth_ipa_isolation_modes isolation;
701 	enum qeth_ipa_isolation_modes prev_isolation;
702 	int sniffer;
703 	enum qeth_cq cq;
704 	char hsuid[9];
705 };
706 
707 /*
708  * thread bits for qeth_card thread masks
709  */
710 enum qeth_threads {
711 	QETH_RECOVER_THREAD = 1,
712 };
713 
714 struct qeth_osn_info {
715 	int (*assist_cb)(struct net_device *dev, void *data);
716 	int (*data_cb)(struct sk_buff *skb);
717 };
718 
719 enum qeth_discipline_id {
720 	QETH_DISCIPLINE_LAYER3 = 0,
721 	QETH_DISCIPLINE_LAYER2 = 1,
722 };
723 
724 struct qeth_discipline {
725 	void (*start_poll)(struct ccw_device *, int, unsigned long);
726 	qdio_handler_t *input_handler;
727 	qdio_handler_t *output_handler;
728 	int (*recover)(void *ptr);
729 	int (*setup) (struct ccwgroup_device *);
730 	void (*remove) (struct ccwgroup_device *);
731 	int (*set_online) (struct ccwgroup_device *);
732 	int (*set_offline) (struct ccwgroup_device *);
733 	void (*shutdown)(struct ccwgroup_device *);
734 	int (*prepare) (struct ccwgroup_device *);
735 	void (*complete) (struct ccwgroup_device *);
736 	int (*freeze)(struct ccwgroup_device *);
737 	int (*thaw) (struct ccwgroup_device *);
738 	int (*restore)(struct ccwgroup_device *);
739 	int (*control_event_handler)(struct qeth_card *card,
740 					struct qeth_ipa_cmd *cmd);
741 };
742 
743 struct qeth_vlan_vid {
744 	struct list_head list;
745 	unsigned short vid;
746 };
747 
748 struct qeth_mc_mac {
749 	struct list_head list;
750 	__u8 mc_addr[MAX_ADDR_LEN];
751 	unsigned char mc_addrlen;
752 	int is_vmac;
753 };
754 
755 struct qeth_rx {
756 	int b_count;
757 	int b_index;
758 	struct qdio_buffer_element *b_element;
759 	int e_offset;
760 	int qdio_err;
761 };
762 
763 struct carrier_info {
764 	__u8  card_type;
765 	__u16 port_mode;
766 	__u32 port_speed;
767 };
768 
769 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
770 
771 struct qeth_card {
772 	struct list_head list;
773 	enum qeth_card_states state;
774 	int lan_online;
775 	spinlock_t lock;
776 	struct ccwgroup_device *gdev;
777 	struct qeth_channel read;
778 	struct qeth_channel write;
779 	struct qeth_channel data;
780 
781 	struct net_device *dev;
782 	struct net_device_stats stats;
783 
784 	struct qeth_card_info info;
785 	struct qeth_token token;
786 	struct qeth_seqno seqno;
787 	struct qeth_card_options options;
788 
789 	wait_queue_head_t wait_q;
790 	spinlock_t vlanlock;
791 	spinlock_t mclock;
792 	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
793 	struct list_head vid_list;
794 	struct list_head mc_list;
795 	struct work_struct kernel_thread_starter;
796 	spinlock_t thread_mask_lock;
797 	unsigned long thread_start_mask;
798 	unsigned long thread_allowed_mask;
799 	unsigned long thread_running_mask;
800 	struct task_struct *recovery_task;
801 	spinlock_t ip_lock;
802 	struct list_head ip_list;
803 	struct list_head *ip_tbd_list;
804 	struct qeth_ipato ipato;
805 	struct list_head cmd_waiter_list;
806 	/* QDIO buffer handling */
807 	struct qeth_qdio_info qdio;
808 	struct qeth_perf_stats perf_stats;
809 	int read_or_write_problem;
810 	struct qeth_osn_info osn_info;
811 	struct qeth_discipline *discipline;
812 	atomic_t force_alloc_skb;
813 	struct service_level qeth_service_level;
814 	struct qdio_ssqd_desc ssqd;
815 	debug_info_t *debug;
816 	struct mutex conf_mutex;
817 	struct mutex discipline_mutex;
818 	struct napi_struct napi;
819 	struct qeth_rx rx;
820 	struct delayed_work buffer_reclaim_work;
821 	int reclaim_index;
822 	struct work_struct close_dev_work;
823 };
824 
825 struct qeth_card_list_struct {
826 	struct list_head list;
827 	rwlock_t rwlock;
828 };
829 
830 struct qeth_trap_id {
831 	__u16 lparnr;
832 	char vmname[8];
833 	__u8 chpid;
834 	__u8 ssid;
835 	__u16 devno;
836 } __packed;
837 
838 /*some helper functions*/
839 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
840 
841 static inline struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
842 {
843 	struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
844 		dev_get_drvdata(&cdev->dev))->dev);
845 	return card;
846 }
847 
848 static inline int qeth_get_micros(void)
849 {
850 	return (int) (get_tod_clock() >> 12);
851 }
852 
853 static inline int qeth_get_ip_version(struct sk_buff *skb)
854 {
855 	__be16 *p = &((struct ethhdr *)skb->data)->h_proto;
856 
857 	if (*p == ETH_P_8021Q)
858 		p += 2;
859 	switch (*p) {
860 	case ETH_P_IPV6:
861 		return 6;
862 	case ETH_P_IP:
863 		return 4;
864 	default:
865 		return 0;
866 	}
867 }
868 
869 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
870 		struct qeth_buffer_pool_entry *entry)
871 {
872 	list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
873 }
874 
875 static inline int qeth_is_diagass_supported(struct qeth_card *card,
876 		enum qeth_diags_cmds cmd)
877 {
878 	return card->info.diagass_support & (__u32)cmd;
879 }
880 
881 extern struct qeth_discipline qeth_l2_discipline;
882 extern struct qeth_discipline qeth_l3_discipline;
883 extern const struct attribute_group *qeth_generic_attr_groups[];
884 extern const struct attribute_group *qeth_osn_attr_groups[];
885 extern struct workqueue_struct *qeth_wq;
886 
887 const char *qeth_get_cardname_short(struct qeth_card *);
888 int qeth_realloc_buffer_pool(struct qeth_card *, int);
889 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
890 void qeth_core_free_discipline(struct qeth_card *);
891 void qeth_buffer_reclaim_work(struct work_struct *);
892 
893 /* exports for qeth discipline device drivers */
894 extern struct qeth_card_list_struct qeth_core_card_list;
895 extern struct kmem_cache *qeth_core_header_cache;
896 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
897 
898 void qeth_set_recovery_task(struct qeth_card *);
899 void qeth_clear_recovery_task(struct qeth_card *);
900 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
901 int qeth_threads_running(struct qeth_card *, unsigned long);
902 int qeth_wait_for_threads(struct qeth_card *, unsigned long);
903 int qeth_do_run_thread(struct qeth_card *, unsigned long);
904 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long);
905 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
906 int qeth_core_hardsetup_card(struct qeth_card *);
907 void qeth_print_status_message(struct qeth_card *);
908 int qeth_init_qdio_queues(struct qeth_card *);
909 int qeth_send_startlan(struct qeth_card *);
910 int qeth_send_stoplan(struct qeth_card *);
911 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
912 		  int (*reply_cb)
913 		  (struct qeth_card *, struct qeth_reply *, unsigned long),
914 		  void *);
915 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *,
916 			enum qeth_ipa_cmds, enum qeth_prot_versions);
917 int qeth_query_setadapterparms(struct qeth_card *);
918 int qeth_check_qdio_errors(struct qeth_card *, struct qdio_buffer *,
919 		unsigned int, const char *);
920 void qeth_queue_input_buffer(struct qeth_card *, int);
921 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
922 		struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *,
923 		struct qeth_hdr **);
924 void qeth_schedule_recovery(struct qeth_card *);
925 void qeth_qdio_start_poll(struct ccw_device *, int, unsigned long);
926 void qeth_qdio_input_handler(struct ccw_device *,
927 		unsigned int, unsigned int, int,
928 		int, unsigned long);
929 void qeth_qdio_output_handler(struct ccw_device *, unsigned int,
930 			int, int, int, unsigned long);
931 void qeth_clear_ipacmd_list(struct qeth_card *);
932 int qeth_qdio_clear_card(struct qeth_card *, int);
933 void qeth_clear_working_pool_list(struct qeth_card *);
934 void qeth_clear_cmd_buffers(struct qeth_channel *);
935 void qeth_clear_qdio_buffers(struct qeth_card *);
936 void qeth_setadp_promisc_mode(struct qeth_card *);
937 struct net_device_stats *qeth_get_stats(struct net_device *);
938 int qeth_change_mtu(struct net_device *, int);
939 int qeth_setadpparms_change_macaddr(struct qeth_card *);
940 void qeth_tx_timeout(struct net_device *);
941 void qeth_prepare_control_data(struct qeth_card *, int,
942 				struct qeth_cmd_buffer *);
943 void qeth_release_buffer(struct qeth_channel *, struct qeth_cmd_buffer *);
944 void qeth_prepare_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, char);
945 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *);
946 int qeth_mdio_read(struct net_device *, int, int);
947 int qeth_snmp_command(struct qeth_card *, char __user *);
948 int qeth_query_oat_command(struct qeth_card *, char __user *);
949 int qeth_query_card_info(struct qeth_card *card,
950 	struct carrier_info *carrier_info);
951 int qeth_send_control_data(struct qeth_card *, int, struct qeth_cmd_buffer *,
952 	int (*reply_cb)(struct qeth_card *, struct qeth_reply*, unsigned long),
953 	void *reply_param);
954 int qeth_bridgeport_query_ports(struct qeth_card *card,
955 	enum qeth_sbp_roles *role, enum qeth_sbp_states *state);
956 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role);
957 int qeth_bridgeport_an_set(struct qeth_card *card, int enable);
958 int qeth_get_priority_queue(struct qeth_card *, struct sk_buff *, int, int);
959 int qeth_get_elements_no(struct qeth_card *, struct sk_buff *, int);
960 int qeth_get_elements_for_frags(struct sk_buff *);
961 int qeth_do_send_packet_fast(struct qeth_card *, struct qeth_qdio_out_q *,
962 			struct sk_buff *, struct qeth_hdr *, int, int, int);
963 int qeth_do_send_packet(struct qeth_card *, struct qeth_qdio_out_q *,
964 		    struct sk_buff *, struct qeth_hdr *, int);
965 int qeth_core_get_sset_count(struct net_device *, int);
966 void qeth_core_get_ethtool_stats(struct net_device *,
967 				struct ethtool_stats *, u64 *);
968 void qeth_core_get_strings(struct net_device *, u32, u8 *);
969 void qeth_core_get_drvinfo(struct net_device *, struct ethtool_drvinfo *);
970 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
971 int qeth_core_ethtool_get_settings(struct net_device *, struct ethtool_cmd *);
972 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback);
973 int qeth_hdr_chk_and_bounce(struct sk_buff *, struct qeth_hdr **, int);
974 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
975 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
976 int qeth_query_ipassists(struct qeth_card *, enum qeth_prot_versions prot);
977 void qeth_trace_features(struct qeth_card *);
978 void qeth_close_dev(struct qeth_card *);
979 
980 /* exports for OSN */
981 int qeth_osn_assist(struct net_device *, void *, int);
982 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
983 		int (*assist_cb)(struct net_device *, void *),
984 		int (*data_cb)(struct sk_buff *));
985 void qeth_osn_deregister(struct net_device *);
986 
987 #endif /* __QETH_CORE_H__ */
988