2 drivers/net/tulip/tulip.h
4 Copyright 2000,2001 The Linux Kernel Team
5 Written/copyright 1994-2001 by Donald Becker.
7 This software may be used and distributed according to the terms
8 of the GNU General Public License, incorporated herein by reference.
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/
16 #ifndef __NET_TULIP_H__
17 #define __NET_TULIP_H__
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>
30 /* undefine, or define to various debugging levels (>4 == obscene levels) */
33 /* undefine USE_IO_OPS for MMIO, define for PIO */
34 #ifdef CONFIG_TULIP_MMIO
42 struct tulip_chip_table {
45 int valid_intrs; /* CSR7 interrupt enable settings */
47 void (*media_timer) (unsigned long);
48 void (*media_task) (void *);
54 HAS_MEDIA_TABLE = 0x0002,
55 CSR12_IN_SROM = 0x0004,
56 ALWAYS_CHECK_MII = 0x0008,
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,
64 COMET_MAC_ADDR = 0x0800,
67 HAS_SWAPPED_SEEPROM = 0x4000,
68 NEEDS_FAKE_MEDIA_TABLE = 0x8000,
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. */
79 DC21142 = 3, DC21143 = 3,
103 /* Offsets to the Command and Status Registers, "CSRs". All accesses
104 must be longword instructions and quadword aligned. */
124 /* register offset and bits for CFDD PCI config reg */
125 enum pci_cfg_driver_reg {
127 CFDD_Sleep = (1 << 31),
128 CFDD_Snooze = (1 << 30),
131 #define RxPollInt (RxIntr|RxNoBuf|RxDied|RxJabber)
133 /* The bits in the CSR5 status registers, mostly interrupt sources. */
139 NormalIntr = 0x10000,
140 AbnormalIntr = 0x8000,
145 TxFIFOUnderflow = 0x20,
152 /* bit mask for CSR5 TX/RX process state */
153 #define CSR5_TS 0x00700000
154 #define CSR5_RS 0x000e0000
156 enum tulip_mode_bits {
157 TxThreshold = (1 << 22),
158 FullDuplex = (1 << 9),
160 AcceptBroadcast = 0x0100,
161 AcceptAllMulticast = 0x0080,
162 AcceptAllPhys = 0x0040,
165 RxTx = (TxOn | RxOn),
169 enum tulip_busconfig_bits {
178 /* The Tulip Rx and Tx buffer descriptors. */
179 struct tulip_rx_desc {
187 struct tulip_tx_desc {
191 u32 buffer2; /* We use only buffer 1. */
195 enum desc_status_bits {
196 DescOwned = 0x80000000,
197 RxDescFatalErr = 0x8000,
202 enum t21143_csr6_bits {
205 csr6_ign_dest_msb = (1<<26),
207 csr6_scr = (1<<24), /* scramble mode flag: can't be set */
208 csr6_pcs = (1<<23), /* Enables PCS functions (symbol mode requires csr6_ps be set) default is set */
209 csr6_ttm = (1<<22), /* Transmit Threshold Mode, set for 10baseT, 0 for 100BaseTX */
210 csr6_sf = (1<<21), /* Store and forward. If set ignores TR bits */
211 csr6_hbd = (1<<19), /* Heart beat disable. Disables SQE function in 10baseT */
212 csr6_ps = (1<<18), /* Port Select. 0 (defualt) = 10baseT, 1 = 100baseTX: can't be set */
213 csr6_ca = (1<<17), /* Collision Offset Enable. If set uses special algorithm in low collision situations */
214 csr6_trh = (1<<15), /* Transmit Threshold high bit */
215 csr6_trl = (1<<14), /* Transmit Threshold low bit */
217 /***************************************************************
218 * This table shows transmit threshold values based on media *
219 * and these two registers (from PNIC1 & 2 docs) Note: this is *
220 * all meaningless if sf is set. *
221 ***************************************************************/
223 /***********************************
224 * (trh,trl) * 100BaseTX * 10BaseT *
225 ***********************************
228 * (1,0) * 512 * 128 *
229 * (1,1) * 1024 * 160 *
230 ***********************************/
232 csr6_fc = (1<<12), /* Forces a collision in next transmission (for testing in loopback mode) */
233 csr6_om_int_loop = (1<<10), /* internal (FIFO) loopback flag */
234 csr6_om_ext_loop = (1<<11), /* external (PMD) loopback flag */
235 /* set both and you get (PHY) loopback */
236 csr6_fd = (1<<9), /* Full duplex mode, disables hearbeat, no loopback */
237 csr6_pm = (1<<7), /* Pass All Multicast */
238 csr6_pr = (1<<6), /* Promiscuous mode */
239 csr6_sb = (1<<5), /* Start(1)/Stop(0) backoff counter */
240 csr6_if = (1<<4), /* Inverse Filtering, rejects only addresses in address table: can't be set */
241 csr6_pb = (1<<3), /* Pass Bad Frames, (1) causes even bad frames to be passed on */
242 csr6_ho = (1<<2), /* Hash-only filtering mode: can't be set */
243 csr6_hp = (1<<0), /* Hash/Perfect Receive Filtering Mode: can't be set */
245 csr6_mask_capture = (csr6_sc | csr6_ca),
246 csr6_mask_defstate = (csr6_mask_capture | csr6_mbo),
247 csr6_mask_hdcap = (csr6_mask_defstate | csr6_hbd | csr6_ps),
248 csr6_mask_hdcaptt = (csr6_mask_hdcap | csr6_trh | csr6_trl),
249 csr6_mask_fullcap = (csr6_mask_hdcaptt | csr6_fd),
250 csr6_mask_fullpromisc = (csr6_pr | csr6_pm),
251 csr6_mask_filters = (csr6_hp | csr6_ho | csr6_if),
252 csr6_mask_100bt = (csr6_scr | csr6_pcs | csr6_hbd),
256 /* Keep the ring sizes a power of two for efficiency.
257 Making the Tx ring too large decreases the effectiveness of channel
258 bonding and packet priority.
259 There are no ill effects from too-large receive rings. */
261 #define TX_RING_SIZE 32
262 #define RX_RING_SIZE 128
263 #define MEDIA_MASK 31
265 #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer. */
267 #define TULIP_MIN_CACHE_LINE 8 /* in units of 32-bit words */
269 #if defined(__sparc__) || defined(__hppa__)
270 /* The UltraSparc PCI controllers will disconnect at every 64-byte
271 * crossing anyways so it makes no sense to tell Tulip to burst
272 * any more than that.
274 #define TULIP_MAX_CACHE_LINE 16 /* in units of 32-bit words */
276 #define TULIP_MAX_CACHE_LINE 32 /* in units of 32-bit words */
280 /* Ring-wrap flag in length field, use for last ring entry.
281 0x01000000 means chain on buffer2 address,
282 0x02000000 means use the ring start address in CSR2/3.
283 Note: Some work-alike chips do not function correctly in chained mode.
284 The ASIX chip works only in chained mode.
285 Thus we indicates ring mode, but always write the 'next' field for
286 chained mode as well.
288 #define DESC_RING_WRAP 0x02000000
291 #define EEPROM_SIZE 512 /* 2 << EEPROM_ADDRLEN */
294 #define RUN_AT(x) (jiffies + (x))
296 #if defined(__i386__) /* AKA get_unaligned() */
297 #define get_u16(ptr) (*(u16 *)(ptr))
299 #define get_u16(ptr) (((u8*)(ptr))[0] + (((u8*)(ptr))[1]<<8))
305 unsigned char *leafdata;
312 u8 csr12dir; /* General purpose pin directions. */
314 unsigned has_nonmii:1;
315 unsigned has_reset:6;
317 u32 csr15val; /* 21143 NWay setting. */
318 struct medialeaf mleaf[0];
323 struct mediainfo *next;
335 struct tulip_private {
336 const char *product_name;
337 struct net_device *next_module;
338 struct tulip_rx_desc *rx_ring;
339 struct tulip_tx_desc *tx_ring;
340 dma_addr_t rx_ring_dma;
341 dma_addr_t tx_ring_dma;
342 /* The saved address of a sent-in-place packet/buffer, for skfree(). */
343 struct ring_info tx_buffers[TX_RING_SIZE];
344 /* The addresses of receive-in-place skbuffs. */
345 struct ring_info rx_buffers[RX_RING_SIZE];
346 u16 setup_frame[96]; /* Pseudo-Tx frame to init address table. */
350 struct net_device_stats stats;
351 struct timer_list timer; /* Media selection timer. */
352 struct timer_list oom_timer; /* Out of memory timer. */
356 unsigned int cur_rx, cur_tx; /* The next free ring entry */
357 unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */
359 #ifdef CONFIG_TULIP_NAPI_HW_MITIGATION
362 unsigned int full_duplex:1; /* Full-duplex operation requested. */
363 unsigned int full_duplex_lock:1;
364 unsigned int fake_addr:1; /* Multiport board faked address. */
365 unsigned int default_port:4; /* Last dev->if_port value. */
366 unsigned int media2:4; /* Secondary monitored media port. */
367 unsigned int medialock:1; /* Don't sense media type. */
368 unsigned int mediasense:1; /* Media sensing in progress. */
369 unsigned int nway:1, nwayset:1; /* 21143 internal NWay. */
370 unsigned int timeout_recovery:1;
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. */
378 signed char phys[4], mii_cnt; /* MII device addresses. */
379 struct mediatable *mtable;
380 int cur_index; /* Current media index. */
382 struct pci_dev *pdev;
386 void __iomem *base_addr;
388 int pad0; /* Used for 8-byte alignment */
389 struct work_struct media_work;
393 struct eeprom_fixup {
398 u16 newtable[32]; /* Max length below. */
403 extern u16 t21142_csr14[];
404 void t21142_media_task(void *data);
405 void t21142_start_nway(struct net_device *dev);
406 void t21142_lnk_change(struct net_device *dev, int csr5);
410 void pnic2_lnk_change(struct net_device *dev, int csr5);
411 void pnic2_timer(unsigned long data);
412 void pnic2_start_nway(struct net_device *dev);
413 void pnic2_lnk_change(struct net_device *dev, int csr5);
416 void tulip_parse_eeprom(struct net_device *dev);
417 int tulip_read_eeprom(struct net_device *dev, int location, int addr_len);
420 extern unsigned int tulip_max_interrupt_work;
421 extern int tulip_rx_copybreak;
422 irqreturn_t tulip_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
423 int tulip_refill_rx(struct net_device *dev);
424 #ifdef CONFIG_TULIP_NAPI
425 int tulip_poll(struct net_device *dev, int *budget);
430 int tulip_mdio_read(struct net_device *dev, int phy_id, int location);
431 void tulip_mdio_write(struct net_device *dev, int phy_id, int location, int value);
432 void tulip_select_media(struct net_device *dev, int startup);
433 int tulip_check_duplex(struct net_device *dev);
434 void tulip_find_mii (struct net_device *dev, int board_idx);
437 void pnic_do_nway(struct net_device *dev);
438 void pnic_lnk_change(struct net_device *dev, int csr5);
439 void pnic_timer(unsigned long data);
442 void tulip_media_task(void *data);
443 void mxic_timer(unsigned long data);
444 void comet_timer(unsigned long data);
447 extern int tulip_debug;
448 extern const char * const medianame[];
449 extern const char tulip_media_cap[];
450 extern struct tulip_chip_table tulip_tbl[];
451 void oom_timer(unsigned long data);
452 extern u8 t21040_csr13[];
454 static inline void tulip_start_rxtx(struct tulip_private *tp)
456 void __iomem *ioaddr = tp->base_addr;
457 iowrite32(tp->csr6 | RxTx, ioaddr + CSR6);
459 (void) ioread32(ioaddr + CSR6); /* mmio sync */
462 static inline void tulip_stop_rxtx(struct tulip_private *tp)
464 void __iomem *ioaddr = tp->base_addr;
465 u32 csr6 = ioread32(ioaddr + CSR6);
469 iowrite32(csr6 & ~RxTx, ioaddr + CSR6);
471 /* wait until in-flight frame completes.
472 * Max time @ 10BT: 1500*8b/10Mbps == 1200us (+ 100us margin)
473 * Typically expect this loop to end in < 50 us on 100BT.
475 while (--i && (ioread32(ioaddr + CSR5) & (CSR5_TS|CSR5_RS)))
479 printk(KERN_DEBUG "%s: tulip_stop_rxtx() failed\n",
484 static inline void tulip_restart_rxtx(struct tulip_private *tp)
488 tulip_start_rxtx(tp);
491 static inline void tulip_tx_timeout_complete(struct tulip_private *tp, void __iomem *ioaddr)
493 /* Stop and restart the chip's Tx processes. */
494 tulip_restart_rxtx(tp);
495 /* Trigger an immediate transmit demand. */
496 iowrite32(0, ioaddr + CSR1);
498 tp->stats.tx_errors++;
501 #endif /* __NET_TULIP_H__ */