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1da177e4 LT |
1 | /* |
2 | drivers/net/tulip/tulip.h | |
3 | ||
4 | Copyright 2000,2001 The Linux Kernel Team | |
5 | Written/copyright 1994-2001 by Donald Becker. | |
6 | ||
7 | This software may be used and distributed according to the terms | |
8 | of the GNU General Public License, incorporated herein by reference. | |
9 | ||
10 | Please refer to Documentation/DocBook/tulip-user.{pdf,ps,html} | |
11 | for more information on this driver, or visit the project | |
12 | Web page at http://sourceforge.net/projects/tulip/ | |
13 | ||
14 | */ | |
15 | ||
16 | #ifndef __NET_TULIP_H__ | |
17 | #define __NET_TULIP_H__ | |
18 | ||
1da177e4 LT |
19 | #include <linux/kernel.h> |
20 | #include <linux/types.h> | |
21 | #include <linux/spinlock.h> | |
22 | #include <linux/netdevice.h> | |
23 | #include <linux/timer.h> | |
24 | #include <linux/delay.h> | |
6473d160 | 25 | #include <linux/pci.h> |
1da177e4 LT |
26 | #include <asm/io.h> |
27 | #include <asm/irq.h> | |
28 | ||
29 | ||
30 | ||
31 | /* undefine, or define to various debugging levels (>4 == obscene levels) */ | |
32 | #define TULIP_DEBUG 1 | |
33 | ||
1da177e4 | 34 | #ifdef CONFIG_TULIP_MMIO |
7f2b1248 | 35 | #define TULIP_BAR 1 /* CBMA */ |
1da177e4 | 36 | #else |
7f2b1248 | 37 | #define TULIP_BAR 0 /* CBIO */ |
1da177e4 LT |
38 | #endif |
39 | ||
40 | ||
41 | ||
42 | struct tulip_chip_table { | |
43 | char *chip_name; | |
44 | int io_size; | |
45 | int valid_intrs; /* CSR7 interrupt enable settings */ | |
46 | int flags; | |
0bb3cf72 | 47 | void (*media_timer) (unsigned long); |
c4028958 | 48 | work_func_t media_task; |
1da177e4 LT |
49 | }; |
50 | ||
51 | ||
52 | enum tbl_flag { | |
53 | HAS_MII = 0x0001, | |
54 | HAS_MEDIA_TABLE = 0x0002, | |
55 | CSR12_IN_SROM = 0x0004, | |
56 | ALWAYS_CHECK_MII = 0x0008, | |
57 | HAS_ACPI = 0x0010, | |
58 | MC_HASH_ONLY = 0x0020, /* Hash-only multicast filter. */ | |
59 | HAS_PNICNWAY = 0x0080, | |
60 | HAS_NWAY = 0x0040, /* Uses internal NWay xcvr. */ | |
61 | HAS_INTR_MITIGATION = 0x0100, | |
62 | IS_ASIX = 0x0200, | |
63 | HAS_8023X = 0x0400, | |
64 | COMET_MAC_ADDR = 0x0800, | |
65 | HAS_PCI_MWI = 0x1000, | |
66 | HAS_PHY_IRQ = 0x2000, | |
67 | HAS_SWAPPED_SEEPROM = 0x4000, | |
68 | NEEDS_FAKE_MEDIA_TABLE = 0x8000, | |
69 | }; | |
70 | ||
71 | ||
72 | /* chip types. careful! order is VERY IMPORTANT here, as these | |
73 | * are used throughout the driver as indices into arrays */ | |
74 | /* Note 21142 == 21143. */ | |
75 | enum chips { | |
76 | DC21040 = 0, | |
77 | DC21041 = 1, | |
78 | DC21140 = 2, | |
79 | DC21142 = 3, DC21143 = 3, | |
80 | LC82C168, | |
81 | MX98713, | |
82 | MX98715, | |
83 | MX98725, | |
84 | AX88140, | |
85 | PNIC2, | |
86 | COMET, | |
87 | COMPEX9881, | |
88 | I21145, | |
89 | DM910X, | |
90 | CONEXANT, | |
1da177e4 LT |
91 | }; |
92 | ||
93 | ||
94 | enum MediaIs { | |
95 | MediaIsFD = 1, | |
96 | MediaAlwaysFD = 2, | |
97 | MediaIsMII = 4, | |
98 | MediaIsFx = 8, | |
99 | MediaIs100 = 16 | |
100 | }; | |
101 | ||
102 | ||
103 | /* Offsets to the Command and Status Registers, "CSRs". All accesses | |
104 | must be longword instructions and quadword aligned. */ | |
105 | enum tulip_offsets { | |
106 | CSR0 = 0, | |
107 | CSR1 = 0x08, | |
108 | CSR2 = 0x10, | |
109 | CSR3 = 0x18, | |
110 | CSR4 = 0x20, | |
111 | CSR5 = 0x28, | |
112 | CSR6 = 0x30, | |
113 | CSR7 = 0x38, | |
114 | CSR8 = 0x40, | |
115 | CSR9 = 0x48, | |
116 | CSR10 = 0x50, | |
117 | CSR11 = 0x58, | |
118 | CSR12 = 0x60, | |
119 | CSR13 = 0x68, | |
120 | CSR14 = 0x70, | |
121 | CSR15 = 0x78, | |
122 | }; | |
123 | ||
124 | /* register offset and bits for CFDD PCI config reg */ | |
125 | enum pci_cfg_driver_reg { | |
126 | CFDD = 0x40, | |
127 | CFDD_Sleep = (1 << 31), | |
128 | CFDD_Snooze = (1 << 30), | |
129 | }; | |
130 | ||
131 | #define RxPollInt (RxIntr|RxNoBuf|RxDied|RxJabber) | |
132 | ||
133 | /* The bits in the CSR5 status registers, mostly interrupt sources. */ | |
134 | enum status_bits { | |
135 | TimerInt = 0x800, | |
1ddb9861 | 136 | SystemError = 0x2000, |
1da177e4 LT |
137 | TPLnkFail = 0x1000, |
138 | TPLnkPass = 0x10, | |
139 | NormalIntr = 0x10000, | |
140 | AbnormalIntr = 0x8000, | |
141 | RxJabber = 0x200, | |
142 | RxDied = 0x100, | |
143 | RxNoBuf = 0x80, | |
144 | RxIntr = 0x40, | |
145 | TxFIFOUnderflow = 0x20, | |
7f2b1248 | 146 | RxErrIntr = 0x10, |
1da177e4 LT |
147 | TxJabber = 0x08, |
148 | TxNoBuf = 0x04, | |
149 | TxDied = 0x02, | |
150 | TxIntr = 0x01, | |
151 | }; | |
152 | ||
153 | /* bit mask for CSR5 TX/RX process state */ | |
154 | #define CSR5_TS 0x00700000 | |
155 | #define CSR5_RS 0x000e0000 | |
156 | ||
157 | enum tulip_mode_bits { | |
158 | TxThreshold = (1 << 22), | |
159 | FullDuplex = (1 << 9), | |
160 | TxOn = 0x2000, | |
161 | AcceptBroadcast = 0x0100, | |
162 | AcceptAllMulticast = 0x0080, | |
163 | AcceptAllPhys = 0x0040, | |
164 | AcceptRunt = 0x0008, | |
165 | RxOn = 0x0002, | |
166 | RxTx = (TxOn | RxOn), | |
167 | }; | |
168 | ||
169 | ||
170 | enum tulip_busconfig_bits { | |
171 | MWI = (1 << 24), | |
172 | MRL = (1 << 23), | |
173 | MRM = (1 << 21), | |
174 | CALShift = 14, | |
175 | BurstLenShift = 8, | |
176 | }; | |
177 | ||
178 | ||
179 | /* The Tulip Rx and Tx buffer descriptors. */ | |
180 | struct tulip_rx_desc { | |
c559a5bc AV |
181 | __le32 status; |
182 | __le32 length; | |
183 | __le32 buffer1; | |
184 | __le32 buffer2; | |
1da177e4 LT |
185 | }; |
186 | ||
187 | ||
188 | struct tulip_tx_desc { | |
c559a5bc AV |
189 | __le32 status; |
190 | __le32 length; | |
191 | __le32 buffer1; | |
192 | __le32 buffer2; /* We use only buffer 1. */ | |
1da177e4 LT |
193 | }; |
194 | ||
195 | ||
196 | enum desc_status_bits { | |
7f2b1248 GG |
197 | DescOwned = 0x80000000, |
198 | DescWholePkt = 0x60000000, | |
199 | DescEndPkt = 0x40000000, | |
200 | DescStartPkt = 0x20000000, | |
201 | DescEndRing = 0x02000000, | |
202 | DescUseLink = 0x01000000, | |
203 | RxDescFatalErr = 0x008000, | |
204 | RxWholePkt = 0x00000300, | |
1da177e4 LT |
205 | }; |
206 | ||
207 | ||
208 | enum t21143_csr6_bits { | |
209 | csr6_sc = (1<<31), | |
210 | csr6_ra = (1<<30), | |
211 | csr6_ign_dest_msb = (1<<26), | |
212 | csr6_mbo = (1<<25), | |
213 | csr6_scr = (1<<24), /* scramble mode flag: can't be set */ | |
214 | csr6_pcs = (1<<23), /* Enables PCS functions (symbol mode requires csr6_ps be set) default is set */ | |
215 | csr6_ttm = (1<<22), /* Transmit Threshold Mode, set for 10baseT, 0 for 100BaseTX */ | |
216 | csr6_sf = (1<<21), /* Store and forward. If set ignores TR bits */ | |
217 | csr6_hbd = (1<<19), /* Heart beat disable. Disables SQE function in 10baseT */ | |
218 | csr6_ps = (1<<18), /* Port Select. 0 (defualt) = 10baseT, 1 = 100baseTX: can't be set */ | |
219 | csr6_ca = (1<<17), /* Collision Offset Enable. If set uses special algorithm in low collision situations */ | |
220 | csr6_trh = (1<<15), /* Transmit Threshold high bit */ | |
221 | csr6_trl = (1<<14), /* Transmit Threshold low bit */ | |
222 | ||
223 | /*************************************************************** | |
224 | * This table shows transmit threshold values based on media * | |
225 | * and these two registers (from PNIC1 & 2 docs) Note: this is * | |
226 | * all meaningless if sf is set. * | |
227 | ***************************************************************/ | |
228 | ||
229 | /*********************************** | |
230 | * (trh,trl) * 100BaseTX * 10BaseT * | |
231 | *********************************** | |
232 | * (0,0) * 128 * 72 * | |
233 | * (0,1) * 256 * 96 * | |
234 | * (1,0) * 512 * 128 * | |
235 | * (1,1) * 1024 * 160 * | |
236 | ***********************************/ | |
237 | ||
238 | csr6_fc = (1<<12), /* Forces a collision in next transmission (for testing in loopback mode) */ | |
239 | csr6_om_int_loop = (1<<10), /* internal (FIFO) loopback flag */ | |
240 | csr6_om_ext_loop = (1<<11), /* external (PMD) loopback flag */ | |
241 | /* set both and you get (PHY) loopback */ | |
242 | csr6_fd = (1<<9), /* Full duplex mode, disables hearbeat, no loopback */ | |
243 | csr6_pm = (1<<7), /* Pass All Multicast */ | |
244 | csr6_pr = (1<<6), /* Promiscuous mode */ | |
245 | csr6_sb = (1<<5), /* Start(1)/Stop(0) backoff counter */ | |
246 | csr6_if = (1<<4), /* Inverse Filtering, rejects only addresses in address table: can't be set */ | |
247 | csr6_pb = (1<<3), /* Pass Bad Frames, (1) causes even bad frames to be passed on */ | |
248 | csr6_ho = (1<<2), /* Hash-only filtering mode: can't be set */ | |
249 | csr6_hp = (1<<0), /* Hash/Perfect Receive Filtering Mode: can't be set */ | |
250 | ||
251 | csr6_mask_capture = (csr6_sc | csr6_ca), | |
252 | csr6_mask_defstate = (csr6_mask_capture | csr6_mbo), | |
253 | csr6_mask_hdcap = (csr6_mask_defstate | csr6_hbd | csr6_ps), | |
254 | csr6_mask_hdcaptt = (csr6_mask_hdcap | csr6_trh | csr6_trl), | |
255 | csr6_mask_fullcap = (csr6_mask_hdcaptt | csr6_fd), | |
256 | csr6_mask_fullpromisc = (csr6_pr | csr6_pm), | |
257 | csr6_mask_filters = (csr6_hp | csr6_ho | csr6_if), | |
258 | csr6_mask_100bt = (csr6_scr | csr6_pcs | csr6_hbd), | |
259 | }; | |
260 | ||
261 | ||
262 | /* Keep the ring sizes a power of two for efficiency. | |
263 | Making the Tx ring too large decreases the effectiveness of channel | |
264 | bonding and packet priority. | |
265 | There are no ill effects from too-large receive rings. */ | |
266 | ||
267 | #define TX_RING_SIZE 32 | |
f3b197ac | 268 | #define RX_RING_SIZE 128 |
1da177e4 LT |
269 | #define MEDIA_MASK 31 |
270 | ||
271 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer. */ | |
272 | ||
273 | #define TULIP_MIN_CACHE_LINE 8 /* in units of 32-bit words */ | |
274 | ||
275 | #if defined(__sparc__) || defined(__hppa__) | |
276 | /* The UltraSparc PCI controllers will disconnect at every 64-byte | |
277 | * crossing anyways so it makes no sense to tell Tulip to burst | |
278 | * any more than that. | |
279 | */ | |
280 | #define TULIP_MAX_CACHE_LINE 16 /* in units of 32-bit words */ | |
281 | #else | |
282 | #define TULIP_MAX_CACHE_LINE 32 /* in units of 32-bit words */ | |
283 | #endif | |
284 | ||
285 | ||
286 | /* Ring-wrap flag in length field, use for last ring entry. | |
287 | 0x01000000 means chain on buffer2 address, | |
288 | 0x02000000 means use the ring start address in CSR2/3. | |
289 | Note: Some work-alike chips do not function correctly in chained mode. | |
290 | The ASIX chip works only in chained mode. | |
291 | Thus we indicates ring mode, but always write the 'next' field for | |
292 | chained mode as well. | |
293 | */ | |
294 | #define DESC_RING_WRAP 0x02000000 | |
295 | ||
296 | ||
297 | #define EEPROM_SIZE 512 /* 2 << EEPROM_ADDRLEN */ | |
298 | ||
299 | ||
300 | #define RUN_AT(x) (jiffies + (x)) | |
301 | ||
302 | #if defined(__i386__) /* AKA get_unaligned() */ | |
303 | #define get_u16(ptr) (*(u16 *)(ptr)) | |
304 | #else | |
305 | #define get_u16(ptr) (((u8*)(ptr))[0] + (((u8*)(ptr))[1]<<8)) | |
306 | #endif | |
307 | ||
308 | struct medialeaf { | |
309 | u8 type; | |
310 | u8 media; | |
311 | unsigned char *leafdata; | |
312 | }; | |
313 | ||
314 | ||
315 | struct mediatable { | |
316 | u16 defaultmedia; | |
317 | u8 leafcount; | |
318 | u8 csr12dir; /* General purpose pin directions. */ | |
319 | unsigned has_mii:1; | |
320 | unsigned has_nonmii:1; | |
321 | unsigned has_reset:6; | |
322 | u32 csr15dir; | |
323 | u32 csr15val; /* 21143 NWay setting. */ | |
324 | struct medialeaf mleaf[0]; | |
325 | }; | |
326 | ||
327 | ||
328 | struct mediainfo { | |
329 | struct mediainfo *next; | |
330 | int info_type; | |
331 | int index; | |
332 | unsigned char *info; | |
333 | }; | |
334 | ||
335 | struct ring_info { | |
336 | struct sk_buff *skb; | |
337 | dma_addr_t mapping; | |
338 | }; | |
339 | ||
340 | ||
341 | struct tulip_private { | |
342 | const char *product_name; | |
343 | struct net_device *next_module; | |
344 | struct tulip_rx_desc *rx_ring; | |
345 | struct tulip_tx_desc *tx_ring; | |
346 | dma_addr_t rx_ring_dma; | |
347 | dma_addr_t tx_ring_dma; | |
348 | /* The saved address of a sent-in-place packet/buffer, for skfree(). */ | |
349 | struct ring_info tx_buffers[TX_RING_SIZE]; | |
350 | /* The addresses of receive-in-place skbuffs. */ | |
351 | struct ring_info rx_buffers[RX_RING_SIZE]; | |
352 | u16 setup_frame[96]; /* Pseudo-Tx frame to init address table. */ | |
353 | int chip_id; | |
354 | int revision; | |
355 | int flags; | |
bea3348e | 356 | struct napi_struct napi; |
1da177e4 LT |
357 | struct net_device_stats stats; |
358 | struct timer_list timer; /* Media selection timer. */ | |
359 | struct timer_list oom_timer; /* Out of memory timer. */ | |
360 | u32 mc_filter[2]; | |
361 | spinlock_t lock; | |
362 | spinlock_t mii_lock; | |
363 | unsigned int cur_rx, cur_tx; /* The next free ring entry */ | |
364 | unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */ | |
365 | ||
366 | #ifdef CONFIG_TULIP_NAPI_HW_MITIGATION | |
367 | int mit_on; | |
368 | #endif | |
369 | unsigned int full_duplex:1; /* Full-duplex operation requested. */ | |
370 | unsigned int full_duplex_lock:1; | |
371 | unsigned int fake_addr:1; /* Multiport board faked address. */ | |
372 | unsigned int default_port:4; /* Last dev->if_port value. */ | |
373 | unsigned int media2:4; /* Secondary monitored media port. */ | |
374 | unsigned int medialock:1; /* Don't sense media type. */ | |
375 | unsigned int mediasense:1; /* Media sensing in progress. */ | |
376 | unsigned int nway:1, nwayset:1; /* 21143 internal NWay. */ | |
0bb3cf72 | 377 | unsigned int timeout_recovery:1; |
1da177e4 LT |
378 | unsigned int csr0; /* CSR0 setting. */ |
379 | unsigned int csr6; /* Current CSR6 control settings. */ | |
380 | unsigned char eeprom[EEPROM_SIZE]; /* Serial EEPROM contents. */ | |
381 | void (*link_change) (struct net_device * dev, int csr5); | |
382 | u16 sym_advertise, mii_advertise; /* NWay capabilities advertised. */ | |
383 | u16 lpar; /* 21143 Link partner ability. */ | |
384 | u16 advertising[4]; | |
385 | signed char phys[4], mii_cnt; /* MII device addresses. */ | |
386 | struct mediatable *mtable; | |
387 | int cur_index; /* Current media index. */ | |
388 | int saved_if_port; | |
389 | struct pci_dev *pdev; | |
390 | int ttimer; | |
391 | int susp_rx; | |
392 | unsigned long nir; | |
393 | void __iomem *base_addr; | |
394 | int csr12_shadow; | |
395 | int pad0; /* Used for 8-byte alignment */ | |
0bb3cf72 | 396 | struct work_struct media_work; |
c4028958 | 397 | struct net_device *dev; |
1da177e4 LT |
398 | }; |
399 | ||
400 | ||
401 | struct eeprom_fixup { | |
402 | char *name; | |
403 | unsigned char addr0; | |
404 | unsigned char addr1; | |
405 | unsigned char addr2; | |
406 | u16 newtable[32]; /* Max length below. */ | |
407 | }; | |
408 | ||
409 | ||
410 | /* 21142.c */ | |
411 | extern u16 t21142_csr14[]; | |
c4028958 | 412 | void t21142_media_task(struct work_struct *work); |
1da177e4 LT |
413 | void t21142_start_nway(struct net_device *dev); |
414 | void t21142_lnk_change(struct net_device *dev, int csr5); | |
415 | ||
416 | ||
417 | /* PNIC2.c */ | |
418 | void pnic2_lnk_change(struct net_device *dev, int csr5); | |
419 | void pnic2_timer(unsigned long data); | |
420 | void pnic2_start_nway(struct net_device *dev); | |
421 | void pnic2_lnk_change(struct net_device *dev, int csr5); | |
422 | ||
423 | /* eeprom.c */ | |
424 | void tulip_parse_eeprom(struct net_device *dev); | |
425 | int tulip_read_eeprom(struct net_device *dev, int location, int addr_len); | |
426 | ||
427 | /* interrupt.c */ | |
428 | extern unsigned int tulip_max_interrupt_work; | |
429 | extern int tulip_rx_copybreak; | |
7d12e780 | 430 | irqreturn_t tulip_interrupt(int irq, void *dev_instance); |
1da177e4 LT |
431 | int tulip_refill_rx(struct net_device *dev); |
432 | #ifdef CONFIG_TULIP_NAPI | |
bea3348e | 433 | int tulip_poll(struct napi_struct *napi, int budget); |
1da177e4 LT |
434 | #endif |
435 | ||
436 | ||
437 | /* media.c */ | |
438 | int tulip_mdio_read(struct net_device *dev, int phy_id, int location); | |
439 | void tulip_mdio_write(struct net_device *dev, int phy_id, int location, int value); | |
440 | void tulip_select_media(struct net_device *dev, int startup); | |
441 | int tulip_check_duplex(struct net_device *dev); | |
442 | void tulip_find_mii (struct net_device *dev, int board_idx); | |
443 | ||
444 | /* pnic.c */ | |
445 | void pnic_do_nway(struct net_device *dev); | |
446 | void pnic_lnk_change(struct net_device *dev, int csr5); | |
447 | void pnic_timer(unsigned long data); | |
448 | ||
449 | /* timer.c */ | |
c4028958 | 450 | void tulip_media_task(struct work_struct *work); |
1da177e4 LT |
451 | void mxic_timer(unsigned long data); |
452 | void comet_timer(unsigned long data); | |
453 | ||
454 | /* tulip_core.c */ | |
455 | extern int tulip_debug; | |
456 | extern const char * const medianame[]; | |
457 | extern const char tulip_media_cap[]; | |
458 | extern struct tulip_chip_table tulip_tbl[]; | |
459 | void oom_timer(unsigned long data); | |
460 | extern u8 t21040_csr13[]; | |
461 | ||
462 | static inline void tulip_start_rxtx(struct tulip_private *tp) | |
463 | { | |
464 | void __iomem *ioaddr = tp->base_addr; | |
465 | iowrite32(tp->csr6 | RxTx, ioaddr + CSR6); | |
466 | barrier(); | |
467 | (void) ioread32(ioaddr + CSR6); /* mmio sync */ | |
468 | } | |
469 | ||
470 | static inline void tulip_stop_rxtx(struct tulip_private *tp) | |
471 | { | |
472 | void __iomem *ioaddr = tp->base_addr; | |
473 | u32 csr6 = ioread32(ioaddr + CSR6); | |
474 | ||
475 | if (csr6 & RxTx) { | |
476 | unsigned i=1300/10; | |
477 | iowrite32(csr6 & ~RxTx, ioaddr + CSR6); | |
478 | barrier(); | |
479 | /* wait until in-flight frame completes. | |
480 | * Max time @ 10BT: 1500*8b/10Mbps == 1200us (+ 100us margin) | |
481 | * Typically expect this loop to end in < 50 us on 100BT. | |
482 | */ | |
483 | while (--i && (ioread32(ioaddr + CSR5) & (CSR5_TS|CSR5_RS))) | |
484 | udelay(10); | |
485 | ||
486 | if (!i) | |
b3bff39a VH |
487 | printk(KERN_DEBUG "%s: tulip_stop_rxtx() failed" |
488 | " (CSR5 0x%x CSR6 0x%x)\n", | |
489 | pci_name(tp->pdev), | |
490 | ioread32(ioaddr + CSR5), | |
491 | ioread32(ioaddr + CSR6)); | |
1da177e4 LT |
492 | } |
493 | } | |
494 | ||
495 | static inline void tulip_restart_rxtx(struct tulip_private *tp) | |
496 | { | |
ea8f400c PC |
497 | tulip_stop_rxtx(tp); |
498 | udelay(5); | |
1da177e4 LT |
499 | tulip_start_rxtx(tp); |
500 | } | |
501 | ||
0bb3cf72 FR |
502 | static inline void tulip_tx_timeout_complete(struct tulip_private *tp, void __iomem *ioaddr) |
503 | { | |
504 | /* Stop and restart the chip's Tx processes. */ | |
505 | tulip_restart_rxtx(tp); | |
506 | /* Trigger an immediate transmit demand. */ | |
507 | iowrite32(0, ioaddr + CSR1); | |
508 | ||
509 | tp->stats.tx_errors++; | |
510 | } | |
511 | ||
1da177e4 | 512 | #endif /* __NET_TULIP_H__ */ |