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1 #ifndef _ACENIC_H_
2 #define _ACENIC_H_
3 
4 
5 /*
6  * Generate TX index update each time, when TX ring is closed.
7  * Normally, this is not useful, because results in more dma (and irqs
8  * without TX_COAL_INTS_ONLY).
9  */
10 #define USE_TX_COAL_NOW	 0
11 
12 /*
13  * Addressing:
14  *
15  * The Tigon uses 64-bit host addresses, regardless of their actual
16  * length, and it expects a big-endian format. For 32 bit systems the
17  * upper 32 bits of the address are simply ignored (zero), however for
18  * little endian 64 bit systems (Alpha) this looks strange with the
19  * two parts of the address word being swapped.
20  *
21  * The addresses are split in two 32 bit words for all architectures
22  * as some of them are in PCI shared memory and it is necessary to use
23  * readl/writel to access them.
24  *
25  * The addressing code is derived from Pete Wyckoff's work, but
26  * modified to deal properly with readl/writel usage.
27  */
28 
29 struct ace_regs {
30 	u32	pad0[16];	/* PCI control registers */
31 
32 	u32	HostCtrl;	/* 0x40 */
33 	u32	LocalCtrl;
34 
35 	u32	pad1[2];
36 
37 	u32	MiscCfg;	/* 0x50 */
38 
39 	u32	pad2[2];
40 
41 	u32	PciState;
42 
43 	u32	pad3[2];	/* 0x60 */
44 
45 	u32	WinBase;
46 	u32	WinData;
47 
48 	u32	pad4[12];	/* 0x70 */
49 
50 	u32	DmaWriteState;	/* 0xa0 */
51 	u32	pad5[3];
52 	u32	DmaReadState;	/* 0xb0 */
53 
54 	u32	pad6[26];
55 
56 	u32	AssistState;
57 
58 	u32	pad7[8];	/* 0x120 */
59 
60 	u32	CpuCtrl;	/* 0x140 */
61 	u32	Pc;
62 
63 	u32	pad8[3];
64 
65 	u32	SramAddr;	/* 0x154 */
66 	u32	SramData;
67 
68 	u32	pad9[49];
69 
70 	u32	MacRxState;	/* 0x220 */
71 
72 	u32	pad10[7];
73 
74 	u32	CpuBCtrl;	/* 0x240 */
75 	u32	PcB;
76 
77 	u32	pad11[3];
78 
79 	u32	SramBAddr;	/* 0x254 */
80 	u32	SramBData;
81 
82 	u32	pad12[105];
83 
84 	u32	pad13[32];	/* 0x400 */
85 	u32	Stats[32];
86 
87 	u32	Mb0Hi;		/* 0x500 */
88 	u32	Mb0Lo;
89 	u32	Mb1Hi;
90 	u32	CmdPrd;
91 	u32	Mb2Hi;
92 	u32	TxPrd;
93 	u32	Mb3Hi;
94 	u32	RxStdPrd;
95 	u32	Mb4Hi;
96 	u32	RxJumboPrd;
97 	u32	Mb5Hi;
98 	u32	RxMiniPrd;
99 	u32	Mb6Hi;
100 	u32	Mb6Lo;
101 	u32	Mb7Hi;
102 	u32	Mb7Lo;
103 	u32	Mb8Hi;
104 	u32	Mb8Lo;
105 	u32	Mb9Hi;
106 	u32	Mb9Lo;
107 	u32	MbAHi;
108 	u32	MbALo;
109 	u32	MbBHi;
110 	u32	MbBLo;
111 	u32	MbCHi;
112 	u32	MbCLo;
113 	u32	MbDHi;
114 	u32	MbDLo;
115 	u32	MbEHi;
116 	u32	MbELo;
117 	u32	MbFHi;
118 	u32	MbFLo;
119 
120 	u32	pad14[32];
121 
122 	u32	MacAddrHi;	/* 0x600 */
123 	u32	MacAddrLo;
124 	u32	InfoPtrHi;
125 	u32	InfoPtrLo;
126 	u32	MultiCastHi;	/* 0x610 */
127 	u32	MultiCastLo;
128 	u32	ModeStat;
129 	u32	DmaReadCfg;
130 	u32	DmaWriteCfg;	/* 0x620 */
131 	u32	TxBufRat;
132 	u32	EvtCsm;
133 	u32	CmdCsm;
134 	u32	TuneRxCoalTicks;/* 0x630 */
135 	u32	TuneTxCoalTicks;
136 	u32	TuneStatTicks;
137 	u32	TuneMaxTxDesc;
138 	u32	TuneMaxRxDesc;	/* 0x640 */
139 	u32	TuneTrace;
140 	u32	TuneLink;
141 	u32	TuneFastLink;
142 	u32	TracePtr;	/* 0x650 */
143 	u32	TraceStrt;
144 	u32	TraceLen;
145 	u32	IfIdx;
146 	u32	IfMtu;		/* 0x660 */
147 	u32	MaskInt;
148 	u32	GigLnkState;
149 	u32	FastLnkState;
150 	u32	pad16[4];	/* 0x670 */
151 	u32	RxRetCsm;	/* 0x680 */
152 
153 	u32	pad17[31];
154 
155 	u32	CmdRng[64];	/* 0x700 */
156 	u32	Window[0x200];
157 };
158 
159 
160 typedef struct {
161 	u32 addrhi;
162 	u32 addrlo;
163 } aceaddr;
164 
165 
166 #define ACE_WINDOW_SIZE	0x800
167 
168 #define ACE_JUMBO_MTU 9000
169 #define ACE_STD_MTU 1500
170 
171 #define ACE_TRACE_SIZE 0x8000
172 
173 /*
174  * Host control register bits.
175  */
176 
177 #define IN_INT		0x01
178 #define CLR_INT		0x02
179 #define HW_RESET	0x08
180 #define BYTE_SWAP	0x10
181 #define WORD_SWAP	0x20
182 #define MASK_INTS	0x40
183 
184 /*
185  * Local control register bits.
186  */
187 
188 #define EEPROM_DATA_IN		0x800000
189 #define EEPROM_DATA_OUT		0x400000
190 #define EEPROM_WRITE_ENABLE	0x200000
191 #define EEPROM_CLK_OUT		0x100000
192 
193 #define EEPROM_BASE		0xa0000000
194 
195 #define EEPROM_WRITE_SELECT	0xa0
196 #define EEPROM_READ_SELECT	0xa1
197 
198 #define SRAM_BANK_512K		0x200
199 
200 
201 /*
202  * udelay() values for when clocking the eeprom
203  */
204 #define ACE_SHORT_DELAY		2
205 #define ACE_LONG_DELAY		4
206 
207 
208 /*
209  * Misc Config bits
210  */
211 
212 #define SYNC_SRAM_TIMING	0x100000
213 
214 
215 /*
216  * CPU state bits.
217  */
218 
219 #define CPU_RESET		0x01
220 #define CPU_TRACE		0x02
221 #define CPU_PROM_FAILED		0x10
222 #define CPU_HALT		0x00010000
223 #define CPU_HALTED		0xffff0000
224 
225 
226 /*
227  * PCI State bits.
228  */
229 
230 #define DMA_READ_MAX_4		0x04
231 #define DMA_READ_MAX_16		0x08
232 #define DMA_READ_MAX_32		0x0c
233 #define DMA_READ_MAX_64		0x10
234 #define DMA_READ_MAX_128	0x14
235 #define DMA_READ_MAX_256	0x18
236 #define DMA_READ_MAX_1K		0x1c
237 #define DMA_WRITE_MAX_4		0x20
238 #define DMA_WRITE_MAX_16	0x40
239 #define DMA_WRITE_MAX_32	0x60
240 #define DMA_WRITE_MAX_64	0x80
241 #define DMA_WRITE_MAX_128	0xa0
242 #define DMA_WRITE_MAX_256	0xc0
243 #define DMA_WRITE_MAX_1K	0xe0
244 #define DMA_READ_WRITE_MASK	0xfc
245 #define MEM_READ_MULTIPLE	0x00020000
246 #define PCI_66MHZ		0x00080000
247 #define PCI_32BIT		0x00100000
248 #define DMA_WRITE_ALL_ALIGN	0x00800000
249 #define READ_CMD_MEM		0x06000000
250 #define WRITE_CMD_MEM		0x70000000
251 
252 
253 /*
254  * Mode status
255  */
256 
257 #define ACE_BYTE_SWAP_BD	0x02
258 #define ACE_WORD_SWAP_BD	0x04		/* not actually used */
259 #define ACE_WARN		0x08
260 #define ACE_BYTE_SWAP_DMA	0x10
261 #define ACE_NO_JUMBO_FRAG	0x200
262 #define ACE_FATAL		0x40000000
263 
264 
265 /*
266  * DMA config
267  */
268 
269 #define DMA_THRESH_1W		0x10
270 #define DMA_THRESH_2W		0x20
271 #define DMA_THRESH_4W		0x40
272 #define DMA_THRESH_8W		0x80
273 #define DMA_THRESH_16W		0x100
274 #define DMA_THRESH_32W		0x0	/* not described in doc, but exists. */
275 
276 
277 /*
278  * Tuning parameters
279  */
280 
281 #define TICKS_PER_SEC		1000000
282 
283 
284 /*
285  * Link bits
286  */
287 
288 #define LNK_PREF		0x00008000
289 #define LNK_10MB		0x00010000
290 #define LNK_100MB		0x00020000
291 #define LNK_1000MB		0x00040000
292 #define LNK_FULL_DUPLEX		0x00080000
293 #define LNK_HALF_DUPLEX		0x00100000
294 #define LNK_TX_FLOW_CTL_Y	0x00200000
295 #define LNK_NEG_ADVANCED	0x00400000
296 #define LNK_RX_FLOW_CTL_Y	0x00800000
297 #define LNK_NIC			0x01000000
298 #define LNK_JAM			0x02000000
299 #define LNK_JUMBO		0x04000000
300 #define LNK_ALTEON		0x08000000
301 #define LNK_NEG_FCTL		0x10000000
302 #define LNK_NEGOTIATE		0x20000000
303 #define LNK_ENABLE		0x40000000
304 #define LNK_UP			0x80000000
305 
306 
307 /*
308  * Event definitions
309  */
310 
311 #define EVT_RING_ENTRIES	256
312 #define EVT_RING_SIZE	(EVT_RING_ENTRIES * sizeof(struct event))
313 
314 struct event {
315 #ifdef __LITTLE_ENDIAN_BITFIELD
316 	u32	idx:12;
317 	u32	code:12;
318 	u32	evt:8;
319 #else
320 	u32	evt:8;
321 	u32	code:12;
322 	u32	idx:12;
323 #endif
324 	u32     pad;
325 };
326 
327 
328 /*
329  * Events
330  */
331 
332 #define E_FW_RUNNING		0x01
333 #define E_STATS_UPDATED		0x04
334 
335 #define E_STATS_UPDATE		0x04
336 
337 #define E_LNK_STATE		0x06
338 #define E_C_LINK_UP		0x01
339 #define E_C_LINK_DOWN		0x02
340 #define E_C_LINK_10_100		0x03
341 
342 #define E_ERROR			0x07
343 #define E_C_ERR_INVAL_CMD	0x01
344 #define E_C_ERR_UNIMP_CMD	0x02
345 #define E_C_ERR_BAD_CFG		0x03
346 
347 #define E_MCAST_LIST		0x08
348 #define E_C_MCAST_ADDR_ADD	0x01
349 #define E_C_MCAST_ADDR_DEL	0x02
350 
351 #define E_RESET_JUMBO_RNG	0x09
352 
353 
354 /*
355  * Commands
356  */
357 
358 #define CMD_RING_ENTRIES	64
359 
360 struct cmd {
361 #ifdef __LITTLE_ENDIAN_BITFIELD
362 	u32	idx:12;
363 	u32	code:12;
364 	u32	evt:8;
365 #else
366 	u32	evt:8;
367 	u32	code:12;
368 	u32	idx:12;
369 #endif
370 };
371 
372 
373 #define C_HOST_STATE		0x01
374 #define C_C_STACK_UP		0x01
375 #define C_C_STACK_DOWN		0x02
376 
377 #define C_FDR_FILTERING		0x02
378 #define C_C_FDR_FILT_ENABLE	0x01
379 #define C_C_FDR_FILT_DISABLE	0x02
380 
381 #define C_SET_RX_PRD_IDX	0x03
382 #define C_UPDATE_STATS		0x04
383 #define C_RESET_JUMBO_RNG	0x05
384 #define C_ADD_MULTICAST_ADDR	0x08
385 #define C_DEL_MULTICAST_ADDR	0x09
386 
387 #define C_SET_PROMISC_MODE	0x0a
388 #define C_C_PROMISC_ENABLE	0x01
389 #define C_C_PROMISC_DISABLE	0x02
390 
391 #define C_LNK_NEGOTIATION	0x0b
392 #define C_C_NEGOTIATE_BOTH	0x00
393 #define C_C_NEGOTIATE_GIG	0x01
394 #define C_C_NEGOTIATE_10_100	0x02
395 
396 #define C_SET_MAC_ADDR		0x0c
397 #define C_CLEAR_PROFILE		0x0d
398 
399 #define C_SET_MULTICAST_MODE	0x0e
400 #define C_C_MCAST_ENABLE	0x01
401 #define C_C_MCAST_DISABLE	0x02
402 
403 #define C_CLEAR_STATS		0x0f
404 #define C_SET_RX_JUMBO_PRD_IDX	0x10
405 #define C_REFRESH_STATS		0x11
406 
407 
408 /*
409  * Descriptor flags
410  */
411 #define BD_FLG_TCP_UDP_SUM	0x01
412 #define BD_FLG_IP_SUM		0x02
413 #define BD_FLG_END		0x04
414 #define BD_FLG_MORE		0x08
415 #define BD_FLG_JUMBO		0x10
416 #define BD_FLG_UCAST		0x20
417 #define BD_FLG_MCAST		0x40
418 #define BD_FLG_BCAST		0x60
419 #define BD_FLG_TYP_MASK		0x60
420 #define BD_FLG_IP_FRAG		0x80
421 #define BD_FLG_IP_FRAG_END	0x100
422 #define BD_FLG_VLAN_TAG		0x200
423 #define BD_FLG_FRAME_ERROR	0x400
424 #define BD_FLG_COAL_NOW		0x800
425 #define BD_FLG_MINI		0x1000
426 
427 
428 /*
429  * Ring Control block flags
430  */
431 #define RCB_FLG_TCP_UDP_SUM	0x01
432 #define RCB_FLG_IP_SUM		0x02
433 #define RCB_FLG_NO_PSEUDO_HDR	0x08
434 #define RCB_FLG_VLAN_ASSIST	0x10
435 #define RCB_FLG_COAL_INT_ONLY	0x20
436 #define RCB_FLG_TX_HOST_RING	0x40
437 #define RCB_FLG_IEEE_SNAP_SUM	0x80
438 #define RCB_FLG_EXT_RX_BD	0x100
439 #define RCB_FLG_RNG_DISABLE	0x200
440 
441 
442 /*
443  * TX ring - maximum TX ring entries for Tigon I's is 128
444  */
445 #define MAX_TX_RING_ENTRIES	256
446 #define TIGON_I_TX_RING_ENTRIES	128
447 #define TX_RING_SIZE		(MAX_TX_RING_ENTRIES * sizeof(struct tx_desc))
448 #define TX_RING_BASE		0x3800
449 
450 struct tx_desc{
451         aceaddr	addr;
452 	u32	flagsize;
453 #if 0
454 /*
455  * This is in PCI shared mem and must be accessed with readl/writel
456  * real layout is:
457  */
458 #if __LITTLE_ENDIAN
459 	u16	flags;
460 	u16	size;
461 	u16	vlan;
462 	u16	reserved;
463 #else
464 	u16	size;
465 	u16	flags;
466 	u16	reserved;
467 	u16	vlan;
468 #endif
469 #endif
470 	u32	vlanres;
471 };
472 
473 
474 #define RX_STD_RING_ENTRIES	512
475 #define RX_STD_RING_SIZE	(RX_STD_RING_ENTRIES * sizeof(struct rx_desc))
476 
477 #define RX_JUMBO_RING_ENTRIES	256
478 #define RX_JUMBO_RING_SIZE	(RX_JUMBO_RING_ENTRIES *sizeof(struct rx_desc))
479 
480 #define RX_MINI_RING_ENTRIES	1024
481 #define RX_MINI_RING_SIZE	(RX_MINI_RING_ENTRIES *sizeof(struct rx_desc))
482 
483 #define RX_RETURN_RING_ENTRIES	2048
484 #define RX_RETURN_RING_SIZE	(RX_MAX_RETURN_RING_ENTRIES * \
485 				 sizeof(struct rx_desc))
486 
487 struct rx_desc{
488 	aceaddr	addr;
489 #ifdef __LITTLE_ENDIAN
490 	u16	size;
491 	u16	idx;
492 #else
493 	u16	idx;
494 	u16	size;
495 #endif
496 #ifdef __LITTLE_ENDIAN
497 	u16	flags;
498 	u16	type;
499 #else
500 	u16	type;
501 	u16	flags;
502 #endif
503 #ifdef __LITTLE_ENDIAN
504 	u16	tcp_udp_csum;
505 	u16	ip_csum;
506 #else
507 	u16	ip_csum;
508 	u16	tcp_udp_csum;
509 #endif
510 #ifdef __LITTLE_ENDIAN
511 	u16	vlan;
512 	u16	err_flags;
513 #else
514 	u16	err_flags;
515 	u16	vlan;
516 #endif
517 	u32	reserved;
518 	u32	opague;
519 };
520 
521 
522 /*
523  * This struct is shared with the NIC firmware.
524  */
525 struct ring_ctrl {
526 	aceaddr	rngptr;
527 #ifdef __LITTLE_ENDIAN
528 	u16	flags;
529 	u16	max_len;
530 #else
531 	u16	max_len;
532 	u16	flags;
533 #endif
534 	u32	pad;
535 };
536 
537 
538 struct ace_mac_stats {
539 	u32 excess_colls;
540 	u32 coll_1;
541 	u32 coll_2;
542 	u32 coll_3;
543 	u32 coll_4;
544 	u32 coll_5;
545 	u32 coll_6;
546 	u32 coll_7;
547 	u32 coll_8;
548 	u32 coll_9;
549 	u32 coll_10;
550 	u32 coll_11;
551 	u32 coll_12;
552 	u32 coll_13;
553 	u32 coll_14;
554 	u32 coll_15;
555 	u32 late_coll;
556 	u32 defers;
557 	u32 crc_err;
558 	u32 underrun;
559 	u32 crs_err;
560 	u32 pad[3];
561 	u32 drop_ula;
562 	u32 drop_mc;
563 	u32 drop_fc;
564 	u32 drop_space;
565 	u32 coll;
566 	u32 kept_bc;
567 	u32 kept_mc;
568 	u32 kept_uc;
569 };
570 
571 
572 struct ace_info {
573 	union {
574 		u32 stats[256];
575 	} s;
576 	struct ring_ctrl	evt_ctrl;
577 	struct ring_ctrl	cmd_ctrl;
578 	struct ring_ctrl	tx_ctrl;
579 	struct ring_ctrl	rx_std_ctrl;
580 	struct ring_ctrl	rx_jumbo_ctrl;
581 	struct ring_ctrl	rx_mini_ctrl;
582 	struct ring_ctrl	rx_return_ctrl;
583 	aceaddr	evt_prd_ptr;
584 	aceaddr	rx_ret_prd_ptr;
585 	aceaddr	tx_csm_ptr;
586 	aceaddr	stats2_ptr;
587 };
588 
589 
590 struct ring_info {
591 	struct sk_buff		*skb;
592 	DECLARE_PCI_UNMAP_ADDR(mapping)
593 };
594 
595 
596 /*
597  * Funny... As soon as we add maplen on alpha, it starts to work
598  * much slower. Hmm... is it because struct does not fit to one cacheline?
599  * So, split tx_ring_info.
600  */
601 struct tx_ring_info {
602 	struct sk_buff		*skb;
603 	DECLARE_PCI_UNMAP_ADDR(mapping)
604 	DECLARE_PCI_UNMAP_LEN(maplen)
605 };
606 
607 
608 /*
609  * struct ace_skb holding the rings of skb's. This is an awful lot of
610  * pointers, but I don't see any other smart mode to do this in an
611  * efficient manner ;-(
612  */
613 struct ace_skb
614 {
615 	struct tx_ring_info	tx_skbuff[MAX_TX_RING_ENTRIES];
616 	struct ring_info	rx_std_skbuff[RX_STD_RING_ENTRIES];
617 	struct ring_info	rx_mini_skbuff[RX_MINI_RING_ENTRIES];
618 	struct ring_info	rx_jumbo_skbuff[RX_JUMBO_RING_ENTRIES];
619 };
620 
621 
622 /*
623  * Struct private for the AceNIC.
624  *
625  * Elements are grouped so variables used by the tx handling goes
626  * together, and will go into the same cache lines etc. in order to
627  * avoid cache line contention between the rx and tx handling on SMP.
628  *
629  * Frequently accessed variables are put at the beginning of the
630  * struct to help the compiler generate better/shorter code.
631  */
632 struct ace_private
633 {
634 	struct ace_info		*info;
635 	struct ace_regs	__iomem	*regs;		/* register base */
636 	struct ace_skb		*skb;
637 	dma_addr_t		info_dma;	/* 32/64 bit */
638 
639 	int			version, link;
640 	int			promisc, mcast_all;
641 
642 	/*
643 	 * TX elements
644 	 */
645 	struct tx_desc		*tx_ring;
646 	u32			tx_prd;
647 	volatile u32		tx_ret_csm;
648 	int			tx_ring_entries;
649 
650 	/*
651 	 * RX elements
652 	 */
653 	unsigned long		std_refill_busy
654 				__attribute__ ((aligned (SMP_CACHE_BYTES)));
655 	unsigned long		mini_refill_busy, jumbo_refill_busy;
656 	atomic_t		cur_rx_bufs;
657 	atomic_t		cur_mini_bufs;
658 	atomic_t		cur_jumbo_bufs;
659 	u32			rx_std_skbprd, rx_mini_skbprd, rx_jumbo_skbprd;
660 	u32			cur_rx;
661 
662 	struct rx_desc		*rx_std_ring;
663 	struct rx_desc		*rx_jumbo_ring;
664 	struct rx_desc		*rx_mini_ring;
665 	struct rx_desc		*rx_return_ring;
666 
667 #if ACENIC_DO_VLAN
668 	struct vlan_group	*vlgrp;
669 #endif
670 
671 	int			tasklet_pending, jumbo;
672 	struct tasklet_struct	ace_tasklet;
673 
674 	struct event		*evt_ring;
675 
676 	volatile u32		*evt_prd, *rx_ret_prd, *tx_csm;
677 
678 	dma_addr_t		tx_ring_dma;	/* 32/64 bit */
679 	dma_addr_t		rx_ring_base_dma;
680 	dma_addr_t		evt_ring_dma;
681 	dma_addr_t		evt_prd_dma, rx_ret_prd_dma, tx_csm_dma;
682 
683 	unsigned char		*trace_buf;
684 	struct pci_dev		*pdev;
685 	struct net_device	*next;
686 	volatile int		fw_running;
687 	int			board_idx;
688 	u16			pci_command;
689 	u8			pci_latency;
690 	const char		*name;
691 #ifdef INDEX_DEBUG
692 	spinlock_t		debug_lock
693 				__attribute__ ((aligned (SMP_CACHE_BYTES)));
694 	u32			last_tx, last_std_rx, last_mini_rx;
695 #endif
696 	int			pci_using_dac;
697 	u8			firmware_major;
698 	u8			firmware_minor;
699 	u8			firmware_fix;
700 	u32			firmware_start;
701 };
702 
703 
704 #define TX_RESERVED	MAX_SKB_FRAGS
705 
tx_space(struct ace_private * ap,u32 csm,u32 prd)706 static inline int tx_space (struct ace_private *ap, u32 csm, u32 prd)
707 {
708 	return (csm - prd - 1) & (ACE_TX_RING_ENTRIES(ap) - 1);
709 }
710 
711 #define tx_free(ap) 		tx_space((ap)->tx_ret_csm, (ap)->tx_prd, ap)
712 #define tx_ring_full(ap, csm, prd)	(tx_space(ap, csm, prd) <= TX_RESERVED)
713 
set_aceaddr(aceaddr * aa,dma_addr_t addr)714 static inline void set_aceaddr(aceaddr *aa, dma_addr_t addr)
715 {
716 	u64 baddr = (u64) addr;
717 	aa->addrlo = baddr & 0xffffffff;
718 	aa->addrhi = baddr >> 32;
719 	wmb();
720 }
721 
722 
ace_set_txprd(struct ace_regs __iomem * regs,struct ace_private * ap,u32 value)723 static inline void ace_set_txprd(struct ace_regs __iomem *regs,
724 				 struct ace_private *ap, u32 value)
725 {
726 #ifdef INDEX_DEBUG
727 	unsigned long flags;
728 	spin_lock_irqsave(&ap->debug_lock, flags);
729 	writel(value, &regs->TxPrd);
730 	if (value == ap->last_tx)
731 		printk(KERN_ERR "AceNIC RACE ALERT! writing identical value "
732 		       "to tx producer (%i)\n", value);
733 	ap->last_tx = value;
734 	spin_unlock_irqrestore(&ap->debug_lock, flags);
735 #else
736 	writel(value, &regs->TxPrd);
737 #endif
738 	wmb();
739 }
740 
741 
ace_mask_irq(struct net_device * dev)742 static inline void ace_mask_irq(struct net_device *dev)
743 {
744 	struct ace_private *ap = netdev_priv(dev);
745 	struct ace_regs __iomem *regs = ap->regs;
746 
747 	if (ACE_IS_TIGON_I(ap))
748 		writel(1, &regs->MaskInt);
749 	else
750 		writel(readl(&regs->HostCtrl) | MASK_INTS, &regs->HostCtrl);
751 
752 	ace_sync_irq(dev->irq);
753 }
754 
755 
ace_unmask_irq(struct net_device * dev)756 static inline void ace_unmask_irq(struct net_device *dev)
757 {
758 	struct ace_private *ap = netdev_priv(dev);
759 	struct ace_regs __iomem *regs = ap->regs;
760 
761 	if (ACE_IS_TIGON_I(ap))
762 		writel(0, &regs->MaskInt);
763 	else
764 		writel(readl(&regs->HostCtrl) & ~MASK_INTS, &regs->HostCtrl);
765 }
766 
767 
768 /*
769  * Prototypes
770  */
771 static int ace_init(struct net_device *dev);
772 static void ace_load_std_rx_ring(struct ace_private *ap, int nr_bufs);
773 static void ace_load_mini_rx_ring(struct ace_private *ap, int nr_bufs);
774 static void ace_load_jumbo_rx_ring(struct ace_private *ap, int nr_bufs);
775 static irqreturn_t ace_interrupt(int irq, void *dev_id);
776 static int ace_load_firmware(struct net_device *dev);
777 static int ace_open(struct net_device *dev);
778 static int ace_start_xmit(struct sk_buff *skb, struct net_device *dev);
779 static int ace_close(struct net_device *dev);
780 static void ace_tasklet(unsigned long dev);
781 static void ace_dump_trace(struct ace_private *ap);
782 static void ace_set_multicast_list(struct net_device *dev);
783 static int ace_change_mtu(struct net_device *dev, int new_mtu);
784 static int ace_set_mac_addr(struct net_device *dev, void *p);
785 static void ace_set_rxtx_parms(struct net_device *dev, int jumbo);
786 static int ace_allocate_descriptors(struct net_device *dev);
787 static void ace_free_descriptors(struct net_device *dev);
788 static void ace_init_cleanup(struct net_device *dev);
789 static struct net_device_stats *ace_get_stats(struct net_device *dev);
790 static int read_eeprom_byte(struct net_device *dev, unsigned long offset);
791 #if ACENIC_DO_VLAN
792 static void ace_vlan_rx_register(struct net_device *dev, struct vlan_group *grp);
793 #endif
794 
795 #endif /* _ACENIC_H_ */
796