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>
25 #include <linux/pci.h>
31 /* undefine, or define to various debugging levels (>4 == obscene levels) */
34 #ifdef CONFIG_TULIP_MMIO
35 #define TULIP_BAR 1 /* CBMA */
37 #define TULIP_BAR 0 /* CBIO */
42 struct tulip_chip_table {
45 int valid_intrs; /* CSR7 interrupt enable settings */
47 void (*media_timer) (unsigned long);
48 work_func_t media_task;
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. */
136 SystemError = 0x2000,
139 NormalIntr = 0x10000,
140 AbnormalIntr = 0x8000,
145 TxFIFOUnderflow = 0x20,
153 /* bit mask for CSR5 TX/RX process state */
154 #define CSR5_TS 0x00700000
155 #define CSR5_RS 0x000e0000
157 enum tulip_mode_bits {
158 TxThreshold = (1 << 22),
159 FullDuplex = (1 << 9),
161 AcceptBroadcast = 0x0100,
162 AcceptAllMulticast = 0x0080,
163 AcceptAllPhys = 0x0040,
166 RxTx = (TxOn | RxOn),
170 enum tulip_busconfig_bits {
179 /* The Tulip Rx and Tx buffer descriptors. */
180 struct tulip_rx_desc {
188 struct tulip_tx_desc {
192 __le32 buffer2; /* We use only buffer 1. */
196 enum desc_status_bits {
197 DescOwned = 0x80000000,
198 DescWholePkt = 0x60000000,
199 DescEndPkt = 0x40000000,
200 DescStartPkt = 0x20000000,
201 DescEndRing = 0x02000000,
202 DescUseLink = 0x01000000,
203 RxDescFatalErr = 0x008000,
204 RxWholePkt = 0x00000300,
208 enum t21143_csr6_bits {
211 csr6_ign_dest_msb = (1<<26),
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 */
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 ***************************************************************/
229 /***********************************
230 * (trh,trl) * 100BaseTX * 10BaseT *
231 ***********************************
234 * (1,0) * 512 * 128 *
235 * (1,1) * 1024 * 160 *
236 ***********************************/
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 */
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),
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. */
267 #define TX_RING_SIZE 32
268 #define RX_RING_SIZE 128
269 #define MEDIA_MASK 31
271 /* The receiver on the DC21143 rev 65 can fail to close the last
272 * receive descriptor in certain circumstances (see errata) when
273 * using MWI. This can only occur if the receive buffer ends on
274 * a cache line boundary, so the "+ 4" below ensures it doesn't.
276 #define PKT_BUF_SZ (1536 + 4) /* Size of each temporary Rx buffer. */
278 #define TULIP_MIN_CACHE_LINE 8 /* in units of 32-bit words */
280 #if defined(__sparc__) || defined(__hppa__)
281 /* The UltraSparc PCI controllers will disconnect at every 64-byte
282 * crossing anyways so it makes no sense to tell Tulip to burst
283 * any more than that.
285 #define TULIP_MAX_CACHE_LINE 16 /* in units of 32-bit words */
287 #define TULIP_MAX_CACHE_LINE 32 /* in units of 32-bit words */
291 /* Ring-wrap flag in length field, use for last ring entry.
292 0x01000000 means chain on buffer2 address,
293 0x02000000 means use the ring start address in CSR2/3.
294 Note: Some work-alike chips do not function correctly in chained mode.
295 The ASIX chip works only in chained mode.
296 Thus we indicates ring mode, but always write the 'next' field for
297 chained mode as well.
299 #define DESC_RING_WRAP 0x02000000
302 #define EEPROM_SIZE 512 /* 2 << EEPROM_ADDRLEN */
305 #define RUN_AT(x) (jiffies + (x))
307 #if defined(__i386__) /* AKA get_unaligned() */
308 #define get_u16(ptr) (*(u16 *)(ptr))
310 #define get_u16(ptr) (((u8*)(ptr))[0] + (((u8*)(ptr))[1]<<8))
316 unsigned char *leafdata;
323 u8 csr12dir; /* General purpose pin directions. */
325 unsigned has_nonmii:1;
326 unsigned has_reset:6;
328 u32 csr15val; /* 21143 NWay setting. */
329 struct medialeaf mleaf[0];
334 struct mediainfo *next;
346 struct tulip_private {
347 const char *product_name;
348 struct net_device *next_module;
349 struct tulip_rx_desc *rx_ring;
350 struct tulip_tx_desc *tx_ring;
351 dma_addr_t rx_ring_dma;
352 dma_addr_t tx_ring_dma;
353 /* The saved address of a sent-in-place packet/buffer, for skfree(). */
354 struct ring_info tx_buffers[TX_RING_SIZE];
355 /* The addresses of receive-in-place skbuffs. */
356 struct ring_info rx_buffers[RX_RING_SIZE];
357 u16 setup_frame[96]; /* Pseudo-Tx frame to init address table. */
361 struct napi_struct napi;
362 struct net_device_stats stats;
363 struct timer_list timer; /* Media selection timer. */
364 struct timer_list oom_timer; /* Out of memory timer. */
368 unsigned int cur_rx, cur_tx; /* The next free ring entry */
369 unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */
371 #ifdef CONFIG_TULIP_NAPI_HW_MITIGATION
374 unsigned int full_duplex:1; /* Full-duplex operation requested. */
375 unsigned int full_duplex_lock:1;
376 unsigned int fake_addr:1; /* Multiport board faked address. */
377 unsigned int default_port:4; /* Last dev->if_port value. */
378 unsigned int media2:4; /* Secondary monitored media port. */
379 unsigned int medialock:1; /* Don't sense media type. */
380 unsigned int mediasense:1; /* Media sensing in progress. */
381 unsigned int nway:1, nwayset:1; /* 21143 internal NWay. */
382 unsigned int timeout_recovery:1;
383 unsigned int csr0; /* CSR0 setting. */
384 unsigned int csr6; /* Current CSR6 control settings. */
385 unsigned char eeprom[EEPROM_SIZE]; /* Serial EEPROM contents. */
386 void (*link_change) (struct net_device * dev, int csr5);
387 u16 sym_advertise, mii_advertise; /* NWay capabilities advertised. */
388 u16 lpar; /* 21143 Link partner ability. */
390 signed char phys[4], mii_cnt; /* MII device addresses. */
391 struct mediatable *mtable;
392 int cur_index; /* Current media index. */
394 struct pci_dev *pdev;
398 void __iomem *base_addr;
400 int pad0; /* Used for 8-byte alignment */
401 struct work_struct media_work;
402 struct net_device *dev;
406 struct eeprom_fixup {
411 u16 newtable[32]; /* Max length below. */
416 extern u16 t21142_csr14[];
417 void t21142_media_task(struct work_struct *work);
418 void t21142_start_nway(struct net_device *dev);
419 void t21142_lnk_change(struct net_device *dev, int csr5);
423 void pnic2_lnk_change(struct net_device *dev, int csr5);
424 void pnic2_timer(unsigned long data);
425 void pnic2_start_nway(struct net_device *dev);
426 void pnic2_lnk_change(struct net_device *dev, int csr5);
429 void tulip_parse_eeprom(struct net_device *dev);
430 int tulip_read_eeprom(struct net_device *dev, int location, int addr_len);
433 extern unsigned int tulip_max_interrupt_work;
434 extern int tulip_rx_copybreak;
435 irqreturn_t tulip_interrupt(int irq, void *dev_instance);
436 int tulip_refill_rx(struct net_device *dev);
437 #ifdef CONFIG_TULIP_NAPI
438 int tulip_poll(struct napi_struct *napi, int budget);
443 int tulip_mdio_read(struct net_device *dev, int phy_id, int location);
444 void tulip_mdio_write(struct net_device *dev, int phy_id, int location, int value);
445 void tulip_select_media(struct net_device *dev, int startup);
446 int tulip_check_duplex(struct net_device *dev);
447 void tulip_find_mii (struct net_device *dev, int board_idx);
450 void pnic_do_nway(struct net_device *dev);
451 void pnic_lnk_change(struct net_device *dev, int csr5);
452 void pnic_timer(unsigned long data);
455 void tulip_media_task(struct work_struct *work);
456 void mxic_timer(unsigned long data);
457 void comet_timer(unsigned long data);
460 extern int tulip_debug;
461 extern const char * const medianame[];
462 extern const char tulip_media_cap[];
463 extern struct tulip_chip_table tulip_tbl[];
464 void oom_timer(unsigned long data);
465 extern u8 t21040_csr13[];
467 static inline void tulip_start_rxtx(struct tulip_private *tp)
469 void __iomem *ioaddr = tp->base_addr;
470 iowrite32(tp->csr6 | RxTx, ioaddr + CSR6);
472 (void) ioread32(ioaddr + CSR6); /* mmio sync */
475 static inline void tulip_stop_rxtx(struct tulip_private *tp)
477 void __iomem *ioaddr = tp->base_addr;
478 u32 csr6 = ioread32(ioaddr + CSR6);
482 iowrite32(csr6 & ~RxTx, ioaddr + CSR6);
484 /* wait until in-flight frame completes.
485 * Max time @ 10BT: 1500*8b/10Mbps == 1200us (+ 100us margin)
486 * Typically expect this loop to end in < 50 us on 100BT.
488 while (--i && (ioread32(ioaddr + CSR5) & (CSR5_TS|CSR5_RS)))
492 printk(KERN_DEBUG "%s: tulip_stop_rxtx() failed"
493 " (CSR5 0x%x CSR6 0x%x)\n",
495 ioread32(ioaddr + CSR5),
496 ioread32(ioaddr + CSR6));
500 static inline void tulip_restart_rxtx(struct tulip_private *tp)
504 tulip_start_rxtx(tp);
507 static inline void tulip_tx_timeout_complete(struct tulip_private *tp, void __iomem *ioaddr)
509 /* Stop and restart the chip's Tx processes. */
510 tulip_restart_rxtx(tp);
511 /* Trigger an immediate transmit demand. */
512 iowrite32(0, ioaddr + CSR1);
514 tp->stats.tx_errors++;
517 #endif /* __NET_TULIP_H__ */