Commit | Line | Data |
---|---|---|
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 | ||
19 | #include <linux/config.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/types.h> | |
22 | #include <linux/spinlock.h> | |
23 | #include <linux/netdevice.h> | |
24 | #include <linux/timer.h> | |
25 | #include <linux/delay.h> | |
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 | ||
34 | /* undefine USE_IO_OPS for MMIO, define for PIO */ | |
35 | #ifdef CONFIG_TULIP_MMIO | |
36 | # undef USE_IO_OPS | |
37 | #else | |
38 | # define USE_IO_OPS 1 | |
39 | #endif | |
40 | ||
41 | ||
42 | ||
43 | struct tulip_chip_table { | |
44 | char *chip_name; | |
45 | int io_size; | |
46 | int valid_intrs; /* CSR7 interrupt enable settings */ | |
47 | int flags; | |
48 | void (*media_timer) (unsigned long data); | |
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, | |
91 | ULI526X | |
92 | }; | |
93 | ||
94 | ||
95 | enum MediaIs { | |
96 | MediaIsFD = 1, | |
97 | MediaAlwaysFD = 2, | |
98 | MediaIsMII = 4, | |
99 | MediaIsFx = 8, | |
100 | MediaIs100 = 16 | |
101 | }; | |
102 | ||
103 | ||
104 | /* Offsets to the Command and Status Registers, "CSRs". All accesses | |
105 | must be longword instructions and quadword aligned. */ | |
106 | enum tulip_offsets { | |
107 | CSR0 = 0, | |
108 | CSR1 = 0x08, | |
109 | CSR2 = 0x10, | |
110 | CSR3 = 0x18, | |
111 | CSR4 = 0x20, | |
112 | CSR5 = 0x28, | |
113 | CSR6 = 0x30, | |
114 | CSR7 = 0x38, | |
115 | CSR8 = 0x40, | |
116 | CSR9 = 0x48, | |
117 | CSR10 = 0x50, | |
118 | CSR11 = 0x58, | |
119 | CSR12 = 0x60, | |
120 | CSR13 = 0x68, | |
121 | CSR14 = 0x70, | |
122 | CSR15 = 0x78, | |
123 | }; | |
124 | ||
125 | /* register offset and bits for CFDD PCI config reg */ | |
126 | enum pci_cfg_driver_reg { | |
127 | CFDD = 0x40, | |
128 | CFDD_Sleep = (1 << 31), | |
129 | CFDD_Snooze = (1 << 30), | |
130 | }; | |
131 | ||
132 | #define RxPollInt (RxIntr|RxNoBuf|RxDied|RxJabber) | |
133 | ||
134 | /* The bits in the CSR5 status registers, mostly interrupt sources. */ | |
135 | enum status_bits { | |
136 | TimerInt = 0x800, | |
137 | SytemError = 0x2000, | |
138 | TPLnkFail = 0x1000, | |
139 | TPLnkPass = 0x10, | |
140 | NormalIntr = 0x10000, | |
141 | AbnormalIntr = 0x8000, | |
142 | RxJabber = 0x200, | |
143 | RxDied = 0x100, | |
144 | RxNoBuf = 0x80, | |
145 | RxIntr = 0x40, | |
146 | TxFIFOUnderflow = 0x20, | |
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 { | |
181 | s32 status; | |
182 | s32 length; | |
183 | u32 buffer1; | |
184 | u32 buffer2; | |
185 | }; | |
186 | ||
187 | ||
188 | struct tulip_tx_desc { | |
189 | s32 status; | |
190 | s32 length; | |
191 | u32 buffer1; | |
192 | u32 buffer2; /* We use only buffer 1. */ | |
193 | }; | |
194 | ||
195 | ||
196 | enum desc_status_bits { | |
197 | DescOwned = 0x80000000, | |
198 | RxDescFatalErr = 0x8000, | |
199 | RxWholePkt = 0x0300, | |
200 | }; | |
201 | ||
202 | ||
203 | enum t21143_csr6_bits { | |
204 | csr6_sc = (1<<31), | |
205 | csr6_ra = (1<<30), | |
206 | csr6_ign_dest_msb = (1<<26), | |
207 | csr6_mbo = (1<<25), | |
208 | csr6_scr = (1<<24), /* scramble mode flag: can't be set */ | |
209 | csr6_pcs = (1<<23), /* Enables PCS functions (symbol mode requires csr6_ps be set) default is set */ | |
210 | csr6_ttm = (1<<22), /* Transmit Threshold Mode, set for 10baseT, 0 for 100BaseTX */ | |
211 | csr6_sf = (1<<21), /* Store and forward. If set ignores TR bits */ | |
212 | csr6_hbd = (1<<19), /* Heart beat disable. Disables SQE function in 10baseT */ | |
213 | csr6_ps = (1<<18), /* Port Select. 0 (defualt) = 10baseT, 1 = 100baseTX: can't be set */ | |
214 | csr6_ca = (1<<17), /* Collision Offset Enable. If set uses special algorithm in low collision situations */ | |
215 | csr6_trh = (1<<15), /* Transmit Threshold high bit */ | |
216 | csr6_trl = (1<<14), /* Transmit Threshold low bit */ | |
217 | ||
218 | /*************************************************************** | |
219 | * This table shows transmit threshold values based on media * | |
220 | * and these two registers (from PNIC1 & 2 docs) Note: this is * | |
221 | * all meaningless if sf is set. * | |
222 | ***************************************************************/ | |
223 | ||
224 | /*********************************** | |
225 | * (trh,trl) * 100BaseTX * 10BaseT * | |
226 | *********************************** | |
227 | * (0,0) * 128 * 72 * | |
228 | * (0,1) * 256 * 96 * | |
229 | * (1,0) * 512 * 128 * | |
230 | * (1,1) * 1024 * 160 * | |
231 | ***********************************/ | |
232 | ||
233 | csr6_fc = (1<<12), /* Forces a collision in next transmission (for testing in loopback mode) */ | |
234 | csr6_om_int_loop = (1<<10), /* internal (FIFO) loopback flag */ | |
235 | csr6_om_ext_loop = (1<<11), /* external (PMD) loopback flag */ | |
236 | /* set both and you get (PHY) loopback */ | |
237 | csr6_fd = (1<<9), /* Full duplex mode, disables hearbeat, no loopback */ | |
238 | csr6_pm = (1<<7), /* Pass All Multicast */ | |
239 | csr6_pr = (1<<6), /* Promiscuous mode */ | |
240 | csr6_sb = (1<<5), /* Start(1)/Stop(0) backoff counter */ | |
241 | csr6_if = (1<<4), /* Inverse Filtering, rejects only addresses in address table: can't be set */ | |
242 | csr6_pb = (1<<3), /* Pass Bad Frames, (1) causes even bad frames to be passed on */ | |
243 | csr6_ho = (1<<2), /* Hash-only filtering mode: can't be set */ | |
244 | csr6_hp = (1<<0), /* Hash/Perfect Receive Filtering Mode: can't be set */ | |
245 | ||
246 | csr6_mask_capture = (csr6_sc | csr6_ca), | |
247 | csr6_mask_defstate = (csr6_mask_capture | csr6_mbo), | |
248 | csr6_mask_hdcap = (csr6_mask_defstate | csr6_hbd | csr6_ps), | |
249 | csr6_mask_hdcaptt = (csr6_mask_hdcap | csr6_trh | csr6_trl), | |
250 | csr6_mask_fullcap = (csr6_mask_hdcaptt | csr6_fd), | |
251 | csr6_mask_fullpromisc = (csr6_pr | csr6_pm), | |
252 | csr6_mask_filters = (csr6_hp | csr6_ho | csr6_if), | |
253 | csr6_mask_100bt = (csr6_scr | csr6_pcs | csr6_hbd), | |
254 | }; | |
255 | ||
256 | ||
257 | /* Keep the ring sizes a power of two for efficiency. | |
258 | Making the Tx ring too large decreases the effectiveness of channel | |
259 | bonding and packet priority. | |
260 | There are no ill effects from too-large receive rings. */ | |
261 | ||
262 | #define TX_RING_SIZE 32 | |
263 | #define RX_RING_SIZE 128 | |
264 | #define MEDIA_MASK 31 | |
265 | ||
266 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer. */ | |
267 | ||
268 | #define TULIP_MIN_CACHE_LINE 8 /* in units of 32-bit words */ | |
269 | ||
270 | #if defined(__sparc__) || defined(__hppa__) | |
271 | /* The UltraSparc PCI controllers will disconnect at every 64-byte | |
272 | * crossing anyways so it makes no sense to tell Tulip to burst | |
273 | * any more than that. | |
274 | */ | |
275 | #define TULIP_MAX_CACHE_LINE 16 /* in units of 32-bit words */ | |
276 | #else | |
277 | #define TULIP_MAX_CACHE_LINE 32 /* in units of 32-bit words */ | |
278 | #endif | |
279 | ||
280 | ||
281 | /* Ring-wrap flag in length field, use for last ring entry. | |
282 | 0x01000000 means chain on buffer2 address, | |
283 | 0x02000000 means use the ring start address in CSR2/3. | |
284 | Note: Some work-alike chips do not function correctly in chained mode. | |
285 | The ASIX chip works only in chained mode. | |
286 | Thus we indicates ring mode, but always write the 'next' field for | |
287 | chained mode as well. | |
288 | */ | |
289 | #define DESC_RING_WRAP 0x02000000 | |
290 | ||
291 | ||
292 | #define EEPROM_SIZE 512 /* 2 << EEPROM_ADDRLEN */ | |
293 | ||
294 | ||
295 | #define RUN_AT(x) (jiffies + (x)) | |
296 | ||
297 | #if defined(__i386__) /* AKA get_unaligned() */ | |
298 | #define get_u16(ptr) (*(u16 *)(ptr)) | |
299 | #else | |
300 | #define get_u16(ptr) (((u8*)(ptr))[0] + (((u8*)(ptr))[1]<<8)) | |
301 | #endif | |
302 | ||
303 | struct medialeaf { | |
304 | u8 type; | |
305 | u8 media; | |
306 | unsigned char *leafdata; | |
307 | }; | |
308 | ||
309 | ||
310 | struct mediatable { | |
311 | u16 defaultmedia; | |
312 | u8 leafcount; | |
313 | u8 csr12dir; /* General purpose pin directions. */ | |
314 | unsigned has_mii:1; | |
315 | unsigned has_nonmii:1; | |
316 | unsigned has_reset:6; | |
317 | u32 csr15dir; | |
318 | u32 csr15val; /* 21143 NWay setting. */ | |
319 | struct medialeaf mleaf[0]; | |
320 | }; | |
321 | ||
322 | ||
323 | struct mediainfo { | |
324 | struct mediainfo *next; | |
325 | int info_type; | |
326 | int index; | |
327 | unsigned char *info; | |
328 | }; | |
329 | ||
330 | struct ring_info { | |
331 | struct sk_buff *skb; | |
332 | dma_addr_t mapping; | |
333 | }; | |
334 | ||
335 | ||
336 | struct tulip_private { | |
337 | const char *product_name; | |
338 | struct net_device *next_module; | |
339 | struct tulip_rx_desc *rx_ring; | |
340 | struct tulip_tx_desc *tx_ring; | |
341 | dma_addr_t rx_ring_dma; | |
342 | dma_addr_t tx_ring_dma; | |
343 | /* The saved address of a sent-in-place packet/buffer, for skfree(). */ | |
344 | struct ring_info tx_buffers[TX_RING_SIZE]; | |
345 | /* The addresses of receive-in-place skbuffs. */ | |
346 | struct ring_info rx_buffers[RX_RING_SIZE]; | |
347 | u16 setup_frame[96]; /* Pseudo-Tx frame to init address table. */ | |
348 | int chip_id; | |
349 | int revision; | |
350 | int flags; | |
351 | struct net_device_stats stats; | |
352 | struct timer_list timer; /* Media selection timer. */ | |
353 | struct timer_list oom_timer; /* Out of memory timer. */ | |
354 | u32 mc_filter[2]; | |
355 | spinlock_t lock; | |
356 | spinlock_t mii_lock; | |
357 | unsigned int cur_rx, cur_tx; /* The next free ring entry */ | |
358 | unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */ | |
359 | ||
360 | #ifdef CONFIG_TULIP_NAPI_HW_MITIGATION | |
361 | int mit_on; | |
362 | #endif | |
363 | unsigned int full_duplex:1; /* Full-duplex operation requested. */ | |
364 | unsigned int full_duplex_lock:1; | |
365 | unsigned int fake_addr:1; /* Multiport board faked address. */ | |
366 | unsigned int default_port:4; /* Last dev->if_port value. */ | |
367 | unsigned int media2:4; /* Secondary monitored media port. */ | |
368 | unsigned int medialock:1; /* Don't sense media type. */ | |
369 | unsigned int mediasense:1; /* Media sensing in progress. */ | |
370 | unsigned int nway:1, nwayset:1; /* 21143 internal NWay. */ | |
371 | unsigned int csr0; /* CSR0 setting. */ | |
372 | unsigned int csr6; /* Current CSR6 control settings. */ | |
373 | unsigned char eeprom[EEPROM_SIZE]; /* Serial EEPROM contents. */ | |
374 | void (*link_change) (struct net_device * dev, int csr5); | |
375 | u16 sym_advertise, mii_advertise; /* NWay capabilities advertised. */ | |
376 | u16 lpar; /* 21143 Link partner ability. */ | |
377 | u16 advertising[4]; | |
378 | signed char phys[4], mii_cnt; /* MII device addresses. */ | |
379 | struct mediatable *mtable; | |
380 | int cur_index; /* Current media index. */ | |
381 | int saved_if_port; | |
382 | struct pci_dev *pdev; | |
383 | int ttimer; | |
384 | int susp_rx; | |
385 | unsigned long nir; | |
386 | void __iomem *base_addr; | |
387 | int csr12_shadow; | |
388 | int pad0; /* Used for 8-byte alignment */ | |
389 | }; | |
390 | ||
391 | ||
392 | struct eeprom_fixup { | |
393 | char *name; | |
394 | unsigned char addr0; | |
395 | unsigned char addr1; | |
396 | unsigned char addr2; | |
397 | u16 newtable[32]; /* Max length below. */ | |
398 | }; | |
399 | ||
400 | ||
401 | /* 21142.c */ | |
402 | extern u16 t21142_csr14[]; | |
403 | void t21142_timer(unsigned long data); | |
404 | void t21142_start_nway(struct net_device *dev); | |
405 | void t21142_lnk_change(struct net_device *dev, int csr5); | |
406 | ||
407 | ||
408 | /* PNIC2.c */ | |
409 | void pnic2_lnk_change(struct net_device *dev, int csr5); | |
410 | void pnic2_timer(unsigned long data); | |
411 | void pnic2_start_nway(struct net_device *dev); | |
412 | void pnic2_lnk_change(struct net_device *dev, int csr5); | |
413 | ||
414 | /* eeprom.c */ | |
415 | void tulip_parse_eeprom(struct net_device *dev); | |
416 | int tulip_read_eeprom(struct net_device *dev, int location, int addr_len); | |
417 | ||
418 | /* interrupt.c */ | |
419 | extern unsigned int tulip_max_interrupt_work; | |
420 | extern int tulip_rx_copybreak; | |
421 | irqreturn_t tulip_interrupt(int irq, void *dev_instance, struct pt_regs *regs); | |
422 | int tulip_refill_rx(struct net_device *dev); | |
423 | #ifdef CONFIG_TULIP_NAPI | |
424 | int tulip_poll(struct net_device *dev, int *budget); | |
425 | #endif | |
426 | ||
427 | ||
428 | /* media.c */ | |
429 | int tulip_mdio_read(struct net_device *dev, int phy_id, int location); | |
430 | void tulip_mdio_write(struct net_device *dev, int phy_id, int location, int value); | |
431 | void tulip_select_media(struct net_device *dev, int startup); | |
432 | int tulip_check_duplex(struct net_device *dev); | |
433 | void tulip_find_mii (struct net_device *dev, int board_idx); | |
434 | ||
435 | /* pnic.c */ | |
436 | void pnic_do_nway(struct net_device *dev); | |
437 | void pnic_lnk_change(struct net_device *dev, int csr5); | |
438 | void pnic_timer(unsigned long data); | |
439 | ||
440 | /* timer.c */ | |
441 | void tulip_timer(unsigned long data); | |
442 | void mxic_timer(unsigned long data); | |
443 | void comet_timer(unsigned long data); | |
444 | ||
445 | /* tulip_core.c */ | |
446 | extern int tulip_debug; | |
447 | extern const char * const medianame[]; | |
448 | extern const char tulip_media_cap[]; | |
449 | extern struct tulip_chip_table tulip_tbl[]; | |
450 | void oom_timer(unsigned long data); | |
451 | extern u8 t21040_csr13[]; | |
452 | ||
453 | static inline void tulip_start_rxtx(struct tulip_private *tp) | |
454 | { | |
455 | void __iomem *ioaddr = tp->base_addr; | |
456 | iowrite32(tp->csr6 | RxTx, ioaddr + CSR6); | |
457 | barrier(); | |
458 | (void) ioread32(ioaddr + CSR6); /* mmio sync */ | |
459 | } | |
460 | ||
461 | static inline void tulip_stop_rxtx(struct tulip_private *tp) | |
462 | { | |
463 | void __iomem *ioaddr = tp->base_addr; | |
464 | u32 csr6 = ioread32(ioaddr + CSR6); | |
465 | ||
466 | if (csr6 & RxTx) { | |
467 | unsigned i=1300/10; | |
468 | iowrite32(csr6 & ~RxTx, ioaddr + CSR6); | |
469 | barrier(); | |
470 | /* wait until in-flight frame completes. | |
471 | * Max time @ 10BT: 1500*8b/10Mbps == 1200us (+ 100us margin) | |
472 | * Typically expect this loop to end in < 50 us on 100BT. | |
473 | */ | |
474 | while (--i && (ioread32(ioaddr + CSR5) & (CSR5_TS|CSR5_RS))) | |
475 | udelay(10); | |
476 | ||
477 | if (!i) | |
478 | printk(KERN_DEBUG "%s: tulip_stop_rxtx() failed\n", | |
479 | pci_name(tp->pdev)); | |
480 | } | |
481 | } | |
482 | ||
483 | static inline void tulip_restart_rxtx(struct tulip_private *tp) | |
484 | { | |
485 | if(!(tp->chip_id == ULI526X && | |
486 | (tp->revision == 0x40 || tp->revision == 0x50))) { | |
487 | tulip_stop_rxtx(tp); | |
488 | udelay(5); | |
489 | } | |
490 | tulip_start_rxtx(tp); | |
491 | } | |
492 | ||
493 | #endif /* __NET_TULIP_H__ */ |