xref: /titanic_50/usr/src/uts/common/io/sfe/sfe_util.h (revision e38a713ad4e0a9c42f8cccd9350412b2c6ccccdb)
1 /*
2  *  sfe_util.h: header to support the gem layer used by Masa Murayama
3  *
4  * Copyright (c) 2002-2007 Masayuki Murayama.  All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright notice,
10  *    this list of conditions and the following disclaimer.
11  *
12  * 2. Redistributions in binary form must reproduce the above copyright notice,
13  *    this list of conditions and the following disclaimer in the documentation
14  *    and/or other materials provided with the distribution.
15  *
16  * 3. Neither the name of the author nor the names of its contributors may be
17  *    used to endorse or promote products derived from this software without
18  *    specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
27  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
28  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
29  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
30  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
31  * DAMAGE.
32  */
33 #pragma ident	"%Z%%M%	%I%	%E% SMI"	/* sfe device driver */
34 
35 #ifndef _SFE_UTIL_H_
36 #define	_SFE_UTIL_H_
37 #include <sys/mac.h>
38 #include <sys/mac_ether.h>
39 
40 /*
41  * Useful macros and typedefs
42  */
43 
44 #define	GEM_NAME_LEN	32
45 
46 #define	GEM_TX_TIMEOUT		(drv_usectohz(5*1000000))
47 #define	GEM_TX_TIMEOUT_INTERVAL	(drv_usectohz(1*1000000))
48 #define	GEM_LINK_WATCH_INTERVAL	(drv_usectohz(1*1000000))	/* 1 sec */
49 
50 /* general return code */
51 #define	GEM_SUCCESS	0
52 #define	GEM_FAILURE	(-1)
53 
54 /* return code of gem_tx_done */
55 #define	INTR_RESTART_TX	0x80000000
56 
57 typedef	int32_t			seqnum_t;
58 
59 /*
60  * I/O instructions
61  */
62 #define	OUTB(dp, p, v)	\
63 	ddi_put8((dp)->regs_handle, \
64 		(void *)((caddr_t)((dp)->base_addr) + (p)), v)
65 #define	OUTW(dp, p, v)	\
66 	ddi_put16((dp)->regs_handle, \
67 		(void *)((caddr_t)((dp)->base_addr) + (p)), v)
68 #define	OUTL(dp, p, v)	\
69 	ddi_put32((dp)->regs_handle, \
70 		(void *)((caddr_t)((dp)->base_addr) + (p)), v)
71 #define	INB(dp, p)	\
72 	ddi_get8((dp)->regs_handle, \
73 		(void *)(((caddr_t)(dp)->base_addr) + (p)))
74 #define	INW(dp, p)	\
75 	ddi_get16((dp)->regs_handle, \
76 		(void *)(((caddr_t)(dp)->base_addr) + (p)))
77 #define	INL(dp, p)	\
78 	ddi_get32((dp)->regs_handle, \
79 		(void *)(((caddr_t)(dp)->base_addr) + (p)))
80 
81 struct gem_stats {
82 	uint32_t	intr;
83 
84 	uint32_t	crc;
85 	uint32_t	errrcv;
86 	uint32_t	overflow;
87 	uint32_t	frame;
88 	uint32_t	missed;
89 	uint32_t	runt;
90 	uint32_t	frame_too_long;
91 	uint32_t	norcvbuf;
92 	uint32_t	sqe;
93 
94 	uint32_t	collisions;
95 	uint32_t	first_coll;
96 	uint32_t	multi_coll;
97 	uint32_t	excoll;
98 	uint32_t	xmit_internal_err;
99 	uint32_t	nocarrier;
100 	uint32_t	defer;
101 	uint32_t	errxmt;
102 	uint32_t	underflow;
103 	uint32_t	xmtlatecoll;
104 	uint32_t	noxmtbuf;
105 	uint32_t	jabber;
106 
107 	uint64_t	rbytes;
108 	uint64_t	obytes;
109 	uint64_t	rpackets;
110 	uint64_t	opackets;
111 	uint32_t	rbcast;
112 	uint32_t	obcast;
113 	uint32_t	rmcast;
114 	uint32_t	omcast;
115 	uint32_t	rcv_internal_err;
116 };
117 
118 #define	GEM_MAXTXSEGS		4
119 #define	GEM_MAXRXSEGS		1
120 
121 #define	GEM_MAXTXFRAGS		8
122 #define	GEM_MAXRXFRAGS		4
123 
124 /* TX buffer management */
125 struct txbuf {
126 	struct txbuf		*txb_next;
127 
128 	/* pointer to original mblk */
129 	mblk_t			*txb_mp;
130 
131 	/* dma mapping for current packet */
132 	ddi_dma_cookie_t	txb_dmacookie[GEM_MAXTXFRAGS];
133 	uint_t			txb_nfrags;
134 
135 	/* bounce buffer management */
136 	ddi_dma_handle_t	txb_bdh;
137 	ddi_acc_handle_t	txb_bah;
138 	caddr_t			txb_buf;	/* vaddr of bounce buffer */
139 	uint64_t		txb_buf_dma;	/* paddr of bounce buffer */
140 
141 	/* timeout management */
142 	clock_t			txb_stime;
143 
144 	/* Hardware descriptor info */
145 	seqnum_t		txb_desc;
146 	int			txb_ndescs;
147 	uint64_t		txb_flag;
148 };
149 
150 
151 /* RX buffer management */
152 struct rxbuf {
153 	/* Hardware independant section */
154 	struct rxbuf		*rxb_next;
155 	struct gem_dev		*rxb_devp;
156 
157 	/* dma mapping management */
158 	ddi_dma_handle_t	rxb_dh;
159 	caddr_t			rxb_buf;
160 	size_t			rxb_buf_len;
161 	ddi_dma_cookie_t	rxb_dmacookie[GEM_MAXRXFRAGS];
162 	uint_t			rxb_nfrags;
163 
164 	/* bounce buffer management */
165 	ddi_acc_handle_t	rxb_bah;
166 };
167 
168 struct mcast_addr {
169 	struct ether_addr	addr;
170 	uint32_t		hash;
171 };
172 
173 #define	GEM_MAXMC		64
174 #define	GEM_MCALLOC		(sizeof (struct mcast_addr) * GEM_MAXMC)
175 
176 #define	SUB(x, y)		((seqnum_t)((x) - (y)))
177 #define	SLOT(seqnum, size)	(((unsigned int)(seqnum)) & ((size)-1))
178 
179 /*
180  * mac soft state
181  */
182 struct gem_dev {
183 	dev_info_t		*dip;
184 	mac_handle_t		mh;
185 	char			name[GEM_NAME_LEN];
186 	void			*base_addr;
187 	ddi_acc_handle_t	regs_handle;
188 	ddi_iblock_cookie_t	iblock_cookie;
189 
190 	/* MAC address information */
191 	struct ether_addr	cur_addr;
192 	struct ether_addr	dev_addr;
193 
194 	/* Descriptor rings, io area */
195 	ddi_dma_handle_t	desc_dma_handle;
196 	ddi_acc_handle_t	desc_acc_handle;
197 	caddr_t			rx_ring;
198 	caddr_t			tx_ring;
199 	caddr_t			io_area;
200 	/* caddr_t			rx_buf; */
201 
202 	uint64_t		rx_ring_dma;
203 	uint64_t		tx_ring_dma;
204 	uint64_t		io_area_dma;
205 
206 	/* RX slot ring management */
207 	kmutex_t		intrlock;
208 	boolean_t		intr_busy;
209 	seqnum_t		rx_active_head;
210 	seqnum_t		rx_active_tail;
211 	mac_resource_handle_t	mac_rx_ring_ha;
212 	/* Rx buffer management */
213 	struct rxbuf		*rx_buf_head;
214 	struct rxbuf		*rx_buf_tail;
215 	struct rxbuf		*rx_buf_freelist;
216 	int			rx_buf_allocated;
217 	int			rx_buf_freecnt;
218 	int			rx_buf_len;
219 
220 	/* TX descriptor ring management */
221 	seqnum_t		tx_desc_head;
222 	seqnum_t		tx_desc_tail;
223 	seqnum_t		tx_desc_intr;
224 
225 	/* TX buffur ring management */
226 	kmutex_t		xmitlock;
227 	kcondvar_t		tx_drain_cv;
228 	seqnum_t		tx_active_head;
229 	seqnum_t		tx_active_tail;
230 	seqnum_t		tx_softq_head;
231 	seqnum_t		tx_softq_tail;
232 	seqnum_t		tx_free_head;
233 	seqnum_t		tx_free_tail;
234 
235 	/* TX buffer resource management */
236 	struct txbuf		*tx_buf;
237 	seqnum_t		tx_slots_base;
238 
239 	/* TX state management */
240 	int			tx_busy;
241 	int			tx_reclaim_busy;
242 	boolean_t		tx_blocked;
243 
244 	/* NIC state */
245 	volatile boolean_t	mac_active;	/* tx and rx are running */
246 	volatile int		nic_state;	/* logical driver state */
247 #define	NIC_STATE_STOPPED	0
248 #define	NIC_STATE_INITIALIZED	1
249 #define	NIC_STATE_ONLINE	2
250 	volatile boolean_t	mac_suspended;
251 
252 	/* robustness: timer and watchdog */
253 	volatile timeout_id_t	timeout_id;
254 
255 
256 	/* MII management */
257 	boolean_t		anadv_autoneg:1;
258 	boolean_t		anadv_1000fdx:1;
259 	boolean_t		anadv_1000hdx:1;
260 	boolean_t		anadv_100t4:1;
261 	boolean_t		anadv_100fdx:1;
262 	boolean_t		anadv_100hdx:1;
263 	boolean_t		anadv_10fdx:1;
264 	boolean_t		anadv_10hdx:1;
265 	boolean_t		anadv_flow_control:2;
266 	boolean_t		mii_advert_ro:1;
267 
268 	boolean_t		full_duplex:1;
269 	int			speed:3;
270 #define		GEM_SPD_10	0
271 #define		GEM_SPD_100	1
272 #define		GEM_SPD_1000	2
273 	unsigned int		flow_control:2;
274 #define		FLOW_CONTROL_NONE	0
275 #define		FLOW_CONTROL_SYMMETRIC	1
276 #define		FLOW_CONTROL_TX_PAUSE	2
277 #define		FLOW_CONTROL_RX_PAUSE	3
278 
279 	boolean_t		mii_supress_msg:1;
280 
281 	uint32_t		mii_phy_id;
282 	uint16_t		mii_status;
283 	uint16_t		mii_advert;
284 	uint16_t		mii_lpable;
285 	uint16_t		mii_exp;
286 	uint16_t		mii_ctl1000;
287 	uint16_t		mii_stat1000;
288 	uint16_t		mii_xstatus;
289 	int8_t			mii_phy_addr;	/* must be signed */
290 
291 	uint8_t			mii_state;
292 #define		MII_STATE_UNKNOWN		0
293 #define		MII_STATE_RESETTING		1
294 #define		MII_STATE_AUTONEGOTIATING	2
295 #define		MII_STATE_AN_DONE		3
296 #define		MII_STATE_MEDIA_SETUP		4
297 #define		MII_STATE_LINKUP		5
298 #define		MII_STATE_LINKDOWN		6
299 
300 	clock_t			mii_last_check;	/* in tick */
301 	clock_t			mii_timer;	/* in tick */
302 #define		MII_RESET_TIMEOUT	drv_usectohz(1000*1000)
303 #define		MII_AN_TIMEOUT		drv_usectohz(5000*1000)
304 #define		MII_LINKDOWN_TIMEOUT	drv_usectohz(10000*1000)
305 	clock_t			mii_interval;	/* in tick */
306 
307 	volatile timeout_id_t	link_watcher_id;
308 
309 	ddi_softintr_t		soft_id;
310 
311 	/* multcast list management */
312 	int16_t			mc_count;
313 	int16_t			mc_count_req;
314 	struct mcast_addr	*mc_list;
315 	uint32_t		rxmode;
316 #define		RXMODE_PROMISC		0x01
317 #define		RXMODE_ALLMULTI_REQ	0x02
318 #define		RXMODE_MULTI_OVF	0x04
319 #define		RXMODE_ENABLE		0x08
320 #define		RXMODE_ALLMULTI		(RXMODE_ALLMULTI_REQ | RXMODE_MULTI_OVF)
321 #define		RXMODE_BITS	\
322 			"\020"	\
323 			"\004ENABLE"	\
324 			"\003MULTI_OVF"	\
325 			"\002ALLMULTI_REQ"	\
326 			"\001PROMISC"
327 
328 	/* statistcs */
329 	struct gem_stats		stats;
330 
331 	/* pointer to local structure */
332 	void			*private;
333 	int			priv_size;
334 
335 	/* polling mode */
336 	int		poll_pkt_hiwat;	/* max pkt count */
337 	int		poll_pkt_delay;	/* in number of packets */
338 
339 	/* descriptor area */
340 	int	tx_desc_size;
341 	int	rx_desc_size;
342 
343 	/* configuration */
344 	struct gem_conf {
345 		/* name */
346 		char	gc_name[GEM_NAME_LEN];
347 
348 		/* specification on tx and rx dma engine */
349 		long	gc_tx_buf_align;
350 		int	gc_tx_max_frags;
351 		int	gc_tx_max_descs_per_pkt;
352 		int	gc_tx_buf_size;
353 		int	gc_tx_buf_limit;
354 		int	gc_tx_desc_unit_shift;
355 		int	gc_tx_ring_size;
356 		int	gc_tx_ring_limit;
357 		int	gc_tx_copy_thresh;
358 		boolean_t gc_tx_auto_pad;
359 		boolean_t gc_tx_desc_write_oo;
360 
361 		long	gc_rx_buf_align;
362 		int	gc_rx_max_frags;
363 		int	gc_rx_desc_unit_shift;
364 		int	gc_rx_ring_size;
365 		int	gc_rx_copy_thresh;
366 		int	gc_rx_buf_max;
367 		int	gc_rx_header_len;
368 
369 		int	gc_io_area_size;
370 
371 		/* memory mapping attributes */
372 		struct ddi_device_acc_attr	gc_dev_attr;
373 		struct ddi_device_acc_attr	gc_buf_attr;
374 		struct ddi_device_acc_attr	gc_desc_attr;
375 
376 		/* dma attributes */
377 		ddi_dma_attr_t		gc_dma_attr_desc;
378 		ddi_dma_attr_t		gc_dma_attr_txbuf;
379 		ddi_dma_attr_t		gc_dma_attr_rxbuf;
380 
381 		/* tx time out parameters */
382 		clock_t	gc_tx_timeout;
383 		clock_t	gc_tx_timeout_interval;
384 
385 		/* auto negotiation capability */
386 		int		gc_flow_control;
387 
388 		/* MII mode */
389 		int	gc_mii_mode;
390 #define		GEM_MODE_100BASETX	0
391 #define		GEM_MODE_1000BASET	1
392 #define		GEM_MODE_1000BASETX	2
393 
394 		/* MII link state watch parameters */
395 		clock_t	gc_mii_linkdown_timeout;
396 		clock_t	gc_mii_link_watch_interval;
397 		clock_t	gc_mii_reset_timeout;
398 
399 		clock_t	gc_mii_an_watch_interval;
400 		clock_t	gc_mii_an_timeout;
401 		clock_t	gc_mii_an_wait;
402 		clock_t	gc_mii_an_delay;
403 
404 		/* MII configuration */
405 		int	gc_mii_addr_min;
406 		int	gc_mii_linkdown_action;
407 		int	gc_mii_linkdown_timeout_action;
408 #define		MII_ACTION_NONE		0
409 #define		MII_ACTION_RESET	1
410 #define		MII_ACTION_RSA		2
411 		boolean_t	gc_mii_dont_reset;
412 		boolean_t	gc_mii_an_oneshot;
413 		boolean_t	gc_mii_hw_link_detection;
414 		boolean_t	gc_mii_stop_mac_on_linkdown;
415 
416 		/* I/O methods */
417 
418 		/* mac operation */
419 		int	(*gc_attach_chip)(struct gem_dev *dp);
420 		int	(*gc_reset_chip)(struct gem_dev *dp);
421 		int	(*gc_init_chip)(struct gem_dev *dp);
422 		int	(*gc_start_chip)(struct gem_dev *dp);
423 		int	(*gc_stop_chip)(struct gem_dev *dp);
424 		uint32_t (*gc_multicast_hash)(struct gem_dev *dp, uint8_t *);
425 		int	(*gc_set_rx_filter)(struct gem_dev *dp);
426 		int	(*gc_set_media)(struct gem_dev *dp);
427 		int	(*gc_get_stats)(struct gem_dev *dp);
428 		uint_t	(*gc_interrupt)(struct gem_dev *dp);
429 
430 		/* descriptor operation */
431 		int	(*gc_tx_desc_write)(struct gem_dev *dp, int slot,
432 				ddi_dma_cookie_t *dmacookie,
433 				int frags, uint64_t flag);
434 #define			GEM_TXFLAG_INTR		0x00000001ull
435 #define			GEM_TXFLAG_TCP		0x00000002ull
436 #define				GEM_TXFLAG_TCP_SHIFT		1ull
437 #define			GEM_TXFLAG_UDP		0x00000004ull
438 #define				GEM_TXFLAG_UDP_SHIFT		2ull
439 #define			GEM_TXFLAG_IPv4		0x00000008ull
440 #define				GEM_TXFLAG_IPv4_SHIFT		3ull
441 #define			GEM_TXFLAG_IPv6		0x00000010ull
442 #define				GEM_TXFLAG_IPv6_SHIFT		4ull
443 #define			GEM_TXFLAG_HEAD		0x00000020ull
444 #define			GEM_TXFLAG_TAIL		0x00000040ull
445 #define			GEM_TXFLAG_SWVTAG	0x00000080ull
446 #define			GEM_TXFLAG_PRIVATE	0x0000ff00ull
447 #define				GEM_TXFLAG_PRIVATE_SHIFT	8ull
448 #define				GEM_TXFLAG_PRIVATE_MASK	0xffull
449 #define			GEM_TXFLAG_VID		0x0fff0000ull
450 #define				GEM_TXFLAG_VID_SHIFT		16ull
451 #define				GEM_TXFLAG_VID_MASK		0xfffull
452 #define			GEM_TXFLAG_CFI		0x10000000ull
453 #define			GEM_TXFLAG_PRI		0xe0000000ull
454 #define				GEM_TXFLAG_PRI_SHIFT		29ull
455 #define				GEM_TXFLAG_PRI_MASK		0x7ull
456 #define			GEM_TXFLAG_VTAG		0xffff0000ull
457 #define				GEM_TXFLAG_VTAG_SHIFT		16ull
458 #define			GEM_TXFLAG_HCKSTART		0x000000ff00000000ull
459 #define				GEM_TXFLAG_HCKSTART_SHIFT	32ull
460 #define			GEM_TXFLAG_HCKSTUFF		0x0000ff0000000000ull
461 #define				GEM_TXFLAG_HCKSTUFF_SHIFT	40ull
462 
463 		void (*gc_tx_start) (struct gem_dev *dp, int slot, int frags);
464 		void	(*gc_rx_desc_write)(struct gem_dev *dp, int slot,
465 			    ddi_dma_cookie_t *dmacookie, int frags);
466 		void	(*gc_rx_start)(struct gem_dev *dp, int slot, int frags);
467 
468 		uint_t	(*gc_tx_desc_stat)
469 			(struct gem_dev *dp, int slot, int descs);
470 #define			GEM_TX_DONE	0x00010000
471 #define			GEM_TX_ERR	0x00020000
472 
473 
474 		uint64_t (*gc_rx_desc_stat)
475 				(struct gem_dev *dp, int slot, int frags);
476 
477 #define			GEM_RX_CKSUM		0xffff000000000000ull
478 #define			GEM_RX_CKSUM_SHIFT	48
479 #define			GEM_RX_PRI		0x0000e00000000000ull
480 #define			GEM_RX_PRI_SHIFT	45
481 #define			GEM_RX_CFI		0x0000100000000000ull
482 #define			GEM_RX_VID		0x00000fff00000000ull
483 #define			GEM_RX_VID_SHIFT	32
484 #define			GEM_RX_VTAG		0x0000ffff00000000ull
485 #define			GEM_RX_VTAG_SHIFT	32
486 
487 #define			GEM_RX_CKSUM_IPv6	0x00080000ul
488 #define			GEM_RX_CKSUM_IPv6_SHIFT	19
489 #define			GEM_RX_CKSUM_IPv4	0x00040000ul
490 #define			GEM_RX_CKSUM_IPv4_SHIFT	18
491 #define			GEM_RX_CKSUM_UDP	0x00020000ul
492 #define			GEM_RX_CKSUM_UDP_SHIFT	17
493 #define			GEM_RX_CKSUM_TCP	0x00010000ul
494 #define			GEM_RX_CKSUM_TCP_SHIFT	16
495 #define			GEM_RX_ERR		0x00008000ul
496 #define			GEM_RX_DONE		0x00004000ul
497 #define			GEM_RX_LEN		0x00003ffful	/* 16KB - 1 */
498 
499 		void	(*gc_tx_desc_init)(struct gem_dev *dp, int slot);
500 		void	(*gc_rx_desc_init)(struct gem_dev *dp, int slot);
501 		void	(*gc_tx_desc_clean)(struct gem_dev *dp, int slot);
502 		void	(*gc_rx_desc_clean)(struct gem_dev *dp, int slot);
503 
504 		/* mii operations */
505 		int	(*gc_mii_probe)(struct gem_dev *dp);
506 		int	(*gc_mii_init)(struct gem_dev *dp);
507 		int	(*gc_mii_config)(struct gem_dev *dp);
508 		void	(*gc_mii_sync)(struct gem_dev *dp);
509 		uint16_t (*gc_mii_read)(struct gem_dev *dp, uint_t reg);
510 		void (*gc_mii_write)(struct gem_dev *dp,
511 			uint_t reg, uint16_t val);
512 		void (*gc_mii_tune_phy)(struct gem_dev *dp);
513 
514 		/* packet in/out operation for copy-style  */
515 		void (*gc_put_packet)(struct gem_dev *dp,
516 			mblk_t *, void *, size_t);
517 		mblk_t	*(*gc_get_packet)(struct gem_dev *dp,
518 			struct rxbuf *, size_t);
519 		int	gc_nports;
520 
521 		/* hw checksum */
522 		uint32_t	gc_hck_rx_start;
523 	} gc;
524 
525 	uint32_t	misc_flag;
526 #define		GEM_CTRL_PKT		0x00000200
527 #define		GEM_SOFTINTR		0x00000100
528 #define		GEM_POLL_RXONLY		0x00000080
529 #define		GEM_VLAN_HARD		0x00000040
530 #define		GEM_VLAN_SOFT		0x00000020
531 #define		GEM_VLAN		(GEM_VLAN_HARD | GEM_VLAN_SOFT)
532 #define		GEM_CKSUM_HEADER_IPv4	0x00000010
533 #define		GEM_CKSUM_PARTIAL	0x00000008
534 #define		GEM_CKSUM_FULL_IPv6	0x00000004
535 #define		GEM_CKSUM_FULL_IPv4	0x00000002
536 #define		GEM_NOINTR		0x00000001
537 
538 	volatile timeout_id_t	intr_watcher_id;
539 
540 	uint_t	mtu;
541 
542 	/* performance tuning parameters */
543 	uint_t	txthr;		/* tx fifo threshoold */
544 	uint_t	txmaxdma;	/* tx max dma burst size */
545 	uint_t	rxthr;		/* rx fifo threshoold */
546 	uint_t	rxmaxdma;	/* tx max dma burst size */
547 
548 	/* kstat stuff */
549 	kstat_t	*ksp;
550 
551 	struct	gem_dev	*next;	/* pointer to next port on the same device */
552 
553 	/* ndd stuff */
554 	caddr_t	nd_data_p;
555 	caddr_t	nd_arg_p;
556 
557 #ifdef GEM_DEBUG_LEVEL
558 	int	tx_cnt;
559 #endif
560 };
561 
562 /*
563  * Exported functions
564  */
565 boolean_t gem_get_mac_addr_conf(struct gem_dev *);
566 int gem_mii_probe_default(struct gem_dev *);
567 int gem_mii_config_default(struct gem_dev *);
568 boolean_t gem_mii_link_check(struct gem_dev *dp);
569 uint16_t gem_mii_read(struct gem_dev *, uint_t);
570 void gem_mii_write(struct gem_dev *, uint_t, uint16_t);
571 int gem_reclaim_txbuf(struct gem_dev *dp);
572 int gem_restart_nic(struct gem_dev *dp, uint_t flags);
573 #define	GEM_RESTART_NOWAIT	0x00000002
574 #define	GEM_RESTART_KEEP_BUF	0x00000001
575 boolean_t gem_tx_done(struct gem_dev *);
576 int gem_receive(struct gem_dev *);
577 int gem_receive_copy(struct gem_dev *);
578 struct gem_dev *gem_do_attach(dev_info_t *, int,
579 		struct gem_conf *, void *, ddi_acc_handle_t *, void *, int);
580 
581 mblk_t *gem_send_common(struct gem_dev *, mblk_t *, uint32_t);
582 #define	GEM_SEND_COPY	0x00008000
583 #define	GEM_SEND_CTRL	0x000000ff	/* private flags for control packets */
584 #define	GEM_SEND_VTAG	0xffff0000
585 #define	GEM_SEND_VTAG_SHIFT	16
586 
587 mblk_t *gem_get_packet_default(struct gem_dev *, struct rxbuf *, size_t);
588 
589 uint32_t gem_ether_crc_le(const uint8_t *addr, int len);
590 uint32_t gem_ether_crc_be(const uint8_t *addr, int len);
591 int gem_do_detach(dev_info_t *);
592 
593 int gem_getlongprop_buf(dev_t dev, dev_info_t *dip,
594 	int flags, char *name, void *buf, int *lenp);
595 int gem_getprop(dev_t dev, dev_info_t *dip,
596 	int flags, char *name, int defvalue);
597 
598 struct rxbuf *gem_get_rxbuf(struct gem_dev *, int);
599 
600 void gem_rx_desc_dma_sync(struct gem_dev *, int, int, int);
601 void gem_tx_desc_dma_sync(struct gem_dev *, int, int, int);
602 
603 int gem_resume(dev_info_t *);
604 int gem_suspend(dev_info_t *);
605 uint8_t gem_search_pci_cap(dev_info_t *dip, ddi_acc_handle_t, uint8_t);
606 int gem_pci_set_power_state(dev_info_t *, ddi_acc_handle_t, uint_t);
607 int gem_pci_regs_map_setup(dev_info_t *, uint32_t, uint32_t,
608 	struct ddi_device_acc_attr *, caddr_t *, ddi_acc_handle_t *);
609 void gem_mod_init(struct dev_ops *, char *);
610 void gem_mod_fini(struct dev_ops *);
611 
612 #define	GEM_GET_DEV(dip) \
613 	((struct gem_dev *)(ddi_get_driver_private(dip)))
614 #endif /* _SFE_UTIL_H_ */
615