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 #ifdef CONFIG_TULIP_MMIO
34 #define TULIP_BAR 1 /* CBMA */
36 #define TULIP_BAR 0 /* CBIO */
41 struct tulip_chip_table {
44 int valid_intrs; /* CSR7 interrupt enable settings */
46 void (*media_timer) (unsigned long);
47 void (*media_task) (void *);
53 HAS_MEDIA_TABLE = 0x0002,
54 CSR12_IN_SROM = 0x0004,
55 ALWAYS_CHECK_MII = 0x0008,
57 MC_HASH_ONLY = 0x0020, /* Hash-only multicast filter. */
58 HAS_PNICNWAY = 0x0080,
59 HAS_NWAY = 0x0040, /* Uses internal NWay xcvr. */
60 HAS_INTR_MITIGATION = 0x0100,
63 COMET_MAC_ADDR = 0x0800,
66 HAS_SWAPPED_SEEPROM = 0x4000,
67 NEEDS_FAKE_MEDIA_TABLE = 0x8000,
71 /* chip types. careful! order is VERY IMPORTANT here, as these
72 * are used throughout the driver as indices into arrays */
73 /* Note 21142 == 21143. */
78 DC21142 = 3, DC21143 = 3,
102 /* Offsets to the Command and Status Registers, "CSRs". All accesses
103 must be longword instructions and quadword aligned. */
123 /* register offset and bits for CFDD PCI config reg */
124 enum pci_cfg_driver_reg {
126 CFDD_Sleep = (1 << 31),
127 CFDD_Snooze = (1 << 30),
130 #define RxPollInt (RxIntr|RxNoBuf|RxDied|RxJabber)
132 /* The bits in the CSR5 status registers, mostly interrupt sources. */
138 NormalIntr = 0x10000,
139 AbnormalIntr = 0x8000,
144 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 DescWholePkt = 0x60000000,
198 DescEndPkt = 0x40000000,
199 DescStartPkt = 0x20000000,
200 DescEndRing = 0x02000000,
201 DescUseLink = 0x01000000,
202 RxDescFatalErr = 0x008000,
203 RxWholePkt = 0x00000300,
207 enum t21143_csr6_bits {
210 csr6_ign_dest_msb = (1<<26),
212 csr6_scr = (1<<24), /* scramble mode flag: can't be set */
213 csr6_pcs = (1<<23), /* Enables PCS functions (symbol mode requires csr6_ps be set) default is set */
214 csr6_ttm = (1<<22), /* Transmit Threshold Mode, set for 10baseT, 0 for 100BaseTX */
215 csr6_sf = (1<<21), /* Store and forward. If set ignores TR bits */
216 csr6_hbd = (1<<19), /* Heart beat disable. Disables SQE function in 10baseT */
217 csr6_ps = (1<<18), /* Port Select. 0 (defualt) = 10baseT, 1 = 100baseTX: can't be set */
218 csr6_ca = (1<<17), /* Collision Offset Enable. If set uses special algorithm in low collision situations */
219 csr6_trh = (1<<15), /* Transmit Threshold high bit */
220 csr6_trl = (1<<14), /* Transmit Threshold low bit */
222 /***************************************************************
223 * This table shows transmit threshold values based on media *
224 * and these two registers (from PNIC1 & 2 docs) Note: this is *
225 * all meaningless if sf is set. *
226 ***************************************************************/
228 /***********************************
229 * (trh,trl) * 100BaseTX * 10BaseT *
230 ***********************************
233 * (1,0) * 512 * 128 *
234 * (1,1) * 1024 * 160 *
235 ***********************************/
237 csr6_fc = (1<<12), /* Forces a collision in next transmission (for testing in loopback mode) */
238 csr6_om_int_loop = (1<<10), /* internal (FIFO) loopback flag */
239 csr6_om_ext_loop = (1<<11), /* external (PMD) loopback flag */
240 /* set both and you get (PHY) loopback */
241 csr6_fd = (1<<9), /* Full duplex mode, disables hearbeat, no loopback */
242 csr6_pm = (1<<7), /* Pass All Multicast */
243 csr6_pr = (1<<6), /* Promiscuous mode */
244 csr6_sb = (1<<5), /* Start(1)/Stop(0) backoff counter */
245 csr6_if = (1<<4), /* Inverse Filtering, rejects only addresses in address table: can't be set */
246 csr6_pb = (1<<3), /* Pass Bad Frames, (1) causes even bad frames to be passed on */
247 csr6_ho = (1<<2), /* Hash-only filtering mode: can't be set */
248 csr6_hp = (1<<0), /* Hash/Perfect Receive Filtering Mode: can't be set */
250 csr6_mask_capture = (csr6_sc | csr6_ca),
251 csr6_mask_defstate = (csr6_mask_capture | csr6_mbo),
252 csr6_mask_hdcap = (csr6_mask_defstate | csr6_hbd | csr6_ps),
253 csr6_mask_hdcaptt = (csr6_mask_hdcap | csr6_trh | csr6_trl),
254 csr6_mask_fullcap = (csr6_mask_hdcaptt | csr6_fd),
255 csr6_mask_fullpromisc = (csr6_pr | csr6_pm),
256 csr6_mask_filters = (csr6_hp | csr6_ho | csr6_if),
257 csr6_mask_100bt = (csr6_scr | csr6_pcs | csr6_hbd),
261 /* Keep the ring sizes a power of two for efficiency.
262 Making the Tx ring too large decreases the effectiveness of channel
263 bonding and packet priority.
264 There are no ill effects from too-large receive rings. */
266 #define TX_RING_SIZE 32
267 #define RX_RING_SIZE 128
268 #define MEDIA_MASK 31
270 #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer. */
272 #define TULIP_MIN_CACHE_LINE 8 /* in units of 32-bit words */
274 #if defined(__sparc__) || defined(__hppa__)
275 /* The UltraSparc PCI controllers will disconnect at every 64-byte
276 * crossing anyways so it makes no sense to tell Tulip to burst
277 * any more than that.
279 #define TULIP_MAX_CACHE_LINE 16 /* in units of 32-bit words */
281 #define TULIP_MAX_CACHE_LINE 32 /* in units of 32-bit words */
285 /* Ring-wrap flag in length field, use for last ring entry.
286 0x01000000 means chain on buffer2 address,
287 0x02000000 means use the ring start address in CSR2/3.
288 Note: Some work-alike chips do not function correctly in chained mode.
289 The ASIX chip works only in chained mode.
290 Thus we indicates ring mode, but always write the 'next' field for
291 chained mode as well.
293 #define DESC_RING_WRAP 0x02000000
296 #define EEPROM_SIZE 512 /* 2 << EEPROM_ADDRLEN */
299 #define RUN_AT(x) (jiffies + (x))
301 #if defined(__i386__) /* AKA get_unaligned() */
302 #define get_u16(ptr) (*(u16 *)(ptr))
304 #define get_u16(ptr) (((u8*)(ptr))[0] + (((u8*)(ptr))[1]<<8))
310 unsigned char *leafdata;
317 u8 csr12dir; /* General purpose pin directions. */
319 unsigned has_nonmii:1;
320 unsigned has_reset:6;
322 u32 csr15val; /* 21143 NWay setting. */
323 struct medialeaf mleaf[0];
328 struct mediainfo *next;
340 struct tulip_private {
341 const char *product_name;
342 struct net_device *next_module;
343 struct tulip_rx_desc *rx_ring;
344 struct tulip_tx_desc *tx_ring;
345 dma_addr_t rx_ring_dma;
346 dma_addr_t tx_ring_dma;
347 /* The saved address of a sent-in-place packet/buffer, for skfree(). */
348 struct ring_info tx_buffers[TX_RING_SIZE];
349 /* The addresses of receive-in-place skbuffs. */
350 struct ring_info rx_buffers[RX_RING_SIZE];
351 u16 setup_frame[96]; /* Pseudo-Tx frame to init address table. */
355 struct net_device_stats stats;
356 struct timer_list timer; /* Media selection timer. */
357 struct timer_list oom_timer; /* Out of memory timer. */
361 unsigned int cur_rx, cur_tx; /* The next free ring entry */
362 unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */
364 #ifdef CONFIG_TULIP_NAPI_HW_MITIGATION
367 unsigned int full_duplex:1; /* Full-duplex operation requested. */
368 unsigned int full_duplex_lock:1;
369 unsigned int fake_addr:1; /* Multiport board faked address. */
370 unsigned int default_port:4; /* Last dev->if_port value. */
371 unsigned int media2:4; /* Secondary monitored media port. */
372 unsigned int medialock:1; /* Don't sense media type. */
373 unsigned int mediasense:1; /* Media sensing in progress. */
374 unsigned int nway:1, nwayset:1; /* 21143 internal NWay. */
375 unsigned int timeout_recovery:1;
376 unsigned int csr0; /* CSR0 setting. */
377 unsigned int csr6; /* Current CSR6 control settings. */
378 unsigned char eeprom[EEPROM_SIZE]; /* Serial EEPROM contents. */
379 void (*link_change) (struct net_device * dev, int csr5);
380 u16 sym_advertise, mii_advertise; /* NWay capabilities advertised. */
381 u16 lpar; /* 21143 Link partner ability. */
383 signed char phys[4], mii_cnt; /* MII device addresses. */
384 struct mediatable *mtable;
385 int cur_index; /* Current media index. */
387 struct pci_dev *pdev;
391 void __iomem *base_addr;
393 int pad0; /* Used for 8-byte alignment */
394 struct work_struct media_work;
398 struct eeprom_fixup {
403 u16 newtable[32]; /* Max length below. */
408 extern u16 t21142_csr14[];
409 void t21142_media_task(void *data);
410 void t21142_start_nway(struct net_device *dev);
411 void t21142_lnk_change(struct net_device *dev, int csr5);
415 void pnic2_lnk_change(struct net_device *dev, int csr5);
416 void pnic2_timer(unsigned long data);
417 void pnic2_start_nway(struct net_device *dev);
418 void pnic2_lnk_change(struct net_device *dev, int csr5);
421 void tulip_parse_eeprom(struct net_device *dev);
422 int tulip_read_eeprom(struct net_device *dev, int location, int addr_len);
425 extern unsigned int tulip_max_interrupt_work;
426 extern int tulip_rx_copybreak;
427 irqreturn_t tulip_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
428 int tulip_refill_rx(struct net_device *dev);
429 #ifdef CONFIG_TULIP_NAPI
430 int tulip_poll(struct net_device *dev, int *budget);
435 int tulip_mdio_read(struct net_device *dev, int phy_id, int location);
436 void tulip_mdio_write(struct net_device *dev, int phy_id, int location, int value);
437 void tulip_select_media(struct net_device *dev, int startup);
438 int tulip_check_duplex(struct net_device *dev);
439 void tulip_find_mii (struct net_device *dev, int board_idx);
442 void pnic_do_nway(struct net_device *dev);
443 void pnic_lnk_change(struct net_device *dev, int csr5);
444 void pnic_timer(unsigned long data);
447 void tulip_media_task(void *data);
448 void mxic_timer(unsigned long data);
449 void comet_timer(unsigned long data);
452 extern int tulip_debug;
453 extern const char * const medianame[];
454 extern const char tulip_media_cap[];
455 extern struct tulip_chip_table tulip_tbl[];
456 void oom_timer(unsigned long data);
457 extern u8 t21040_csr13[];
459 static inline void tulip_start_rxtx(struct tulip_private *tp)
461 void __iomem *ioaddr = tp->base_addr;
462 iowrite32(tp->csr6 | RxTx, ioaddr + CSR6);
464 (void) ioread32(ioaddr + CSR6); /* mmio sync */
467 static inline void tulip_stop_rxtx(struct tulip_private *tp)
469 void __iomem *ioaddr = tp->base_addr;
470 u32 csr6 = ioread32(ioaddr + CSR6);
474 iowrite32(csr6 & ~RxTx, ioaddr + CSR6);
476 /* wait until in-flight frame completes.
477 * Max time @ 10BT: 1500*8b/10Mbps == 1200us (+ 100us margin)
478 * Typically expect this loop to end in < 50 us on 100BT.
480 while (--i && (ioread32(ioaddr + CSR5) & (CSR5_TS|CSR5_RS)))
484 printk(KERN_DEBUG "%s: tulip_stop_rxtx() failed\n",
489 static inline void tulip_restart_rxtx(struct tulip_private *tp)
493 tulip_start_rxtx(tp);
496 static inline void tulip_tx_timeout_complete(struct tulip_private *tp, void __iomem *ioaddr)
498 /* Stop and restart the chip's Tx processes. */
499 tulip_restart_rxtx(tp);
500 /* Trigger an immediate transmit demand. */
501 iowrite32(0, ioaddr + CSR1);
503 tp->stats.tx_errors++;
506 #endif /* __NET_TULIP_H__ */