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8f148208 JK |
1 | /* |
2 | Written 1998-2000 by Donald Becker. | |
3 | ||
4 | This software may be used and distributed according to the terms of | |
5 | the GNU General Public License (GPL), incorporated herein by reference. | |
6 | Drivers based on or derived from this code fall under the GPL and must | |
7 | retain the authorship, copyright and license notice. This file is not | |
8 | a complete program and may only be used when the entire operating | |
9 | system is licensed under the GPL. | |
10 | ||
11 | The author may be reached as becker@scyld.com, or C/O | |
12 | Scyld Computing Corporation | |
13 | 410 Severn Ave., Suite 210 | |
14 | Annapolis MD 21403 | |
15 | ||
16 | Support information and updates available at | |
17 | http://www.scyld.com/network/pci-skeleton.html | |
18 | ||
19 | Linux kernel updates: | |
20 | ||
21 | Version 2.51, Nov 17, 2001 (jgarzik): | |
22 | - Add ethtool support | |
23 | - Replace some MII-related magic numbers with constants | |
24 | ||
25 | */ | |
26 | ||
27 | #define DRV_NAME "fealnx" | |
28 | ||
29 | static int debug; /* 1-> print debug message */ | |
30 | static int max_interrupt_work = 20; | |
31 | ||
32 | /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). */ | |
33 | static int multicast_filter_limit = 32; | |
34 | ||
35 | /* Set the copy breakpoint for the copy-only-tiny-frames scheme. */ | |
36 | /* Setting to > 1518 effectively disables this feature. */ | |
37 | static int rx_copybreak; | |
38 | ||
39 | /* Used to pass the media type, etc. */ | |
40 | /* Both 'options[]' and 'full_duplex[]' should exist for driver */ | |
41 | /* interoperability. */ | |
42 | /* The media type is usually passed in 'options[]'. */ | |
43 | #define MAX_UNITS 8 /* More are supported, limit only on options */ | |
44 | static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 }; | |
45 | static int full_duplex[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 }; | |
46 | ||
47 | /* Operational parameters that are set at compile time. */ | |
48 | /* Keep the ring sizes a power of two for compile efficiency. */ | |
49 | /* The compiler will convert <unsigned>'%'<2^N> into a bit mask. */ | |
50 | /* Making the Tx ring too large decreases the effectiveness of channel */ | |
51 | /* bonding and packet priority. */ | |
52 | /* There are no ill effects from too-large receive rings. */ | |
53 | // 88-12-9 modify, | |
54 | // #define TX_RING_SIZE 16 | |
55 | // #define RX_RING_SIZE 32 | |
56 | #define TX_RING_SIZE 6 | |
57 | #define RX_RING_SIZE 12 | |
58 | #define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct fealnx_desc) | |
59 | #define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct fealnx_desc) | |
60 | ||
61 | /* Operational parameters that usually are not changed. */ | |
62 | /* Time in jiffies before concluding the transmitter is hung. */ | |
63 | #define TX_TIMEOUT (2*HZ) | |
64 | ||
65 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer. */ | |
66 | ||
67 | ||
68 | /* Include files, designed to support most kernel versions 2.0.0 and later. */ | |
69 | #include <linux/module.h> | |
70 | #include <linux/kernel.h> | |
71 | #include <linux/string.h> | |
72 | #include <linux/timer.h> | |
73 | #include <linux/errno.h> | |
74 | #include <linux/ioport.h> | |
75 | #include <linux/interrupt.h> | |
76 | #include <linux/pci.h> | |
77 | #include <linux/netdevice.h> | |
78 | #include <linux/etherdevice.h> | |
79 | #include <linux/skbuff.h> | |
80 | #include <linux/init.h> | |
81 | #include <linux/mii.h> | |
82 | #include <linux/ethtool.h> | |
83 | #include <linux/crc32.h> | |
84 | #include <linux/delay.h> | |
85 | #include <linux/bitops.h> | |
86 | ||
87 | #include <asm/processor.h> /* Processor type for cache alignment. */ | |
88 | #include <asm/io.h> | |
89 | #include <linux/uaccess.h> | |
90 | #include <asm/byteorder.h> | |
91 | ||
92 | /* This driver was written to use PCI memory space, however some x86 systems | |
93 | work only with I/O space accesses. */ | |
94 | #ifndef __alpha__ | |
95 | #define USE_IO_OPS | |
96 | #endif | |
97 | ||
98 | /* Kernel compatibility defines, some common to David Hinds' PCMCIA package. */ | |
99 | /* This is only in the support-all-kernels source code. */ | |
100 | ||
101 | #define RUN_AT(x) (jiffies + (x)) | |
102 | ||
103 | MODULE_AUTHOR("Myson or whoever"); | |
104 | MODULE_DESCRIPTION("Myson MTD-8xx 100/10M Ethernet PCI Adapter Driver"); | |
105 | MODULE_LICENSE("GPL"); | |
106 | module_param(max_interrupt_work, int, 0); | |
107 | module_param(debug, int, 0); | |
108 | module_param(rx_copybreak, int, 0); | |
109 | module_param(multicast_filter_limit, int, 0); | |
110 | module_param_array(options, int, NULL, 0); | |
111 | module_param_array(full_duplex, int, NULL, 0); | |
112 | MODULE_PARM_DESC(max_interrupt_work, "fealnx maximum events handled per interrupt"); | |
113 | MODULE_PARM_DESC(debug, "fealnx enable debugging (0-1)"); | |
114 | MODULE_PARM_DESC(rx_copybreak, "fealnx copy breakpoint for copy-only-tiny-frames"); | |
115 | MODULE_PARM_DESC(multicast_filter_limit, "fealnx maximum number of filtered multicast addresses"); | |
116 | MODULE_PARM_DESC(options, "fealnx: Bits 0-3: media type, bit 17: full duplex"); | |
117 | MODULE_PARM_DESC(full_duplex, "fealnx full duplex setting(s) (1)"); | |
118 | ||
119 | enum { | |
120 | MIN_REGION_SIZE = 136, | |
121 | }; | |
122 | ||
123 | /* A chip capabilities table, matching the entries in pci_tbl[] above. */ | |
124 | enum chip_capability_flags { | |
125 | HAS_MII_XCVR, | |
126 | HAS_CHIP_XCVR, | |
127 | }; | |
128 | ||
129 | /* 89/6/13 add, */ | |
130 | /* for different PHY */ | |
131 | enum phy_type_flags { | |
132 | MysonPHY = 1, | |
133 | AhdocPHY = 2, | |
134 | SeeqPHY = 3, | |
135 | MarvellPHY = 4, | |
136 | Myson981 = 5, | |
137 | LevelOnePHY = 6, | |
138 | OtherPHY = 10, | |
139 | }; | |
140 | ||
141 | struct chip_info { | |
142 | char *chip_name; | |
143 | int flags; | |
144 | }; | |
145 | ||
146 | static const struct chip_info skel_netdrv_tbl[] = { | |
147 | { "100/10M Ethernet PCI Adapter", HAS_MII_XCVR }, | |
148 | { "100/10M Ethernet PCI Adapter", HAS_CHIP_XCVR }, | |
149 | { "1000/100/10M Ethernet PCI Adapter", HAS_MII_XCVR }, | |
150 | }; | |
151 | ||
152 | /* Offsets to the Command and Status Registers. */ | |
153 | enum fealnx_offsets { | |
154 | PAR0 = 0x0, /* physical address 0-3 */ | |
155 | PAR1 = 0x04, /* physical address 4-5 */ | |
156 | MAR0 = 0x08, /* multicast address 0-3 */ | |
157 | MAR1 = 0x0C, /* multicast address 4-7 */ | |
158 | FAR0 = 0x10, /* flow-control address 0-3 */ | |
159 | FAR1 = 0x14, /* flow-control address 4-5 */ | |
160 | TCRRCR = 0x18, /* receive & transmit configuration */ | |
161 | BCR = 0x1C, /* bus command */ | |
162 | TXPDR = 0x20, /* transmit polling demand */ | |
163 | RXPDR = 0x24, /* receive polling demand */ | |
164 | RXCWP = 0x28, /* receive current word pointer */ | |
165 | TXLBA = 0x2C, /* transmit list base address */ | |
166 | RXLBA = 0x30, /* receive list base address */ | |
167 | ISR = 0x34, /* interrupt status */ | |
168 | IMR = 0x38, /* interrupt mask */ | |
169 | FTH = 0x3C, /* flow control high/low threshold */ | |
170 | MANAGEMENT = 0x40, /* bootrom/eeprom and mii management */ | |
171 | TALLY = 0x44, /* tally counters for crc and mpa */ | |
172 | TSR = 0x48, /* tally counter for transmit status */ | |
173 | BMCRSR = 0x4c, /* basic mode control and status */ | |
174 | PHYIDENTIFIER = 0x50, /* phy identifier */ | |
175 | ANARANLPAR = 0x54, /* auto-negotiation advertisement and link | |
176 | partner ability */ | |
177 | ANEROCR = 0x58, /* auto-negotiation expansion and pci conf. */ | |
178 | BPREMRPSR = 0x5c, /* bypass & receive error mask and phy status */ | |
179 | }; | |
180 | ||
181 | /* Bits in the interrupt status/enable registers. */ | |
182 | /* The bits in the Intr Status/Enable registers, mostly interrupt sources. */ | |
183 | enum intr_status_bits { | |
184 | RFCON = 0x00020000, /* receive flow control xon packet */ | |
185 | RFCOFF = 0x00010000, /* receive flow control xoff packet */ | |
186 | LSCStatus = 0x00008000, /* link status change */ | |
187 | ANCStatus = 0x00004000, /* autonegotiation completed */ | |
188 | FBE = 0x00002000, /* fatal bus error */ | |
189 | FBEMask = 0x00001800, /* mask bit12-11 */ | |
190 | ParityErr = 0x00000000, /* parity error */ | |
191 | TargetErr = 0x00001000, /* target abort */ | |
192 | MasterErr = 0x00000800, /* master error */ | |
193 | TUNF = 0x00000400, /* transmit underflow */ | |
194 | ROVF = 0x00000200, /* receive overflow */ | |
195 | ETI = 0x00000100, /* transmit early int */ | |
196 | ERI = 0x00000080, /* receive early int */ | |
197 | CNTOVF = 0x00000040, /* counter overflow */ | |
198 | RBU = 0x00000020, /* receive buffer unavailable */ | |
199 | TBU = 0x00000010, /* transmit buffer unavilable */ | |
200 | TI = 0x00000008, /* transmit interrupt */ | |
201 | RI = 0x00000004, /* receive interrupt */ | |
202 | RxErr = 0x00000002, /* receive error */ | |
203 | }; | |
204 | ||
205 | /* Bits in the NetworkConfig register, W for writing, R for reading */ | |
206 | /* FIXME: some names are invented by me. Marked with (name?) */ | |
207 | /* If you have docs and know bit names, please fix 'em */ | |
208 | enum rx_mode_bits { | |
209 | CR_W_ENH = 0x02000000, /* enhanced mode (name?) */ | |
210 | CR_W_FD = 0x00100000, /* full duplex */ | |
211 | CR_W_PS10 = 0x00080000, /* 10 mbit */ | |
212 | CR_W_TXEN = 0x00040000, /* tx enable (name?) */ | |
213 | CR_W_PS1000 = 0x00010000, /* 1000 mbit */ | |
214 | /* CR_W_RXBURSTMASK= 0x00000e00, Im unsure about this */ | |
215 | CR_W_RXMODEMASK = 0x000000e0, | |
216 | CR_W_PROM = 0x00000080, /* promiscuous mode */ | |
217 | CR_W_AB = 0x00000040, /* accept broadcast */ | |
218 | CR_W_AM = 0x00000020, /* accept mutlicast */ | |
219 | CR_W_ARP = 0x00000008, /* receive runt pkt */ | |
220 | CR_W_ALP = 0x00000004, /* receive long pkt */ | |
221 | CR_W_SEP = 0x00000002, /* receive error pkt */ | |
222 | CR_W_RXEN = 0x00000001, /* rx enable (unicast?) (name?) */ | |
223 | ||
224 | CR_R_TXSTOP = 0x04000000, /* tx stopped (name?) */ | |
225 | CR_R_FD = 0x00100000, /* full duplex detected */ | |
226 | CR_R_PS10 = 0x00080000, /* 10 mbit detected */ | |
227 | CR_R_RXSTOP = 0x00008000, /* rx stopped (name?) */ | |
228 | }; | |
229 | ||
230 | /* The Tulip Rx and Tx buffer descriptors. */ | |
231 | struct fealnx_desc { | |
232 | s32 status; | |
233 | s32 control; | |
234 | u32 buffer; | |
235 | u32 next_desc; | |
236 | struct fealnx_desc *next_desc_logical; | |
237 | struct sk_buff *skbuff; | |
238 | u32 reserved1; | |
239 | u32 reserved2; | |
240 | }; | |
241 | ||
242 | /* Bits in network_desc.status */ | |
243 | enum rx_desc_status_bits { | |
244 | RXOWN = 0x80000000, /* own bit */ | |
245 | FLNGMASK = 0x0fff0000, /* frame length */ | |
246 | FLNGShift = 16, | |
247 | MARSTATUS = 0x00004000, /* multicast address received */ | |
248 | BARSTATUS = 0x00002000, /* broadcast address received */ | |
249 | PHYSTATUS = 0x00001000, /* physical address received */ | |
250 | RXFSD = 0x00000800, /* first descriptor */ | |
251 | RXLSD = 0x00000400, /* last descriptor */ | |
252 | ErrorSummary = 0x80, /* error summary */ | |
253 | RUNTPKT = 0x40, /* runt packet received */ | |
254 | LONGPKT = 0x20, /* long packet received */ | |
255 | FAE = 0x10, /* frame align error */ | |
256 | CRC = 0x08, /* crc error */ | |
257 | RXER = 0x04, /* receive error */ | |
258 | }; | |
259 | ||
260 | enum rx_desc_control_bits { | |
261 | RXIC = 0x00800000, /* interrupt control */ | |
262 | RBSShift = 0, | |
263 | }; | |
264 | ||
265 | enum tx_desc_status_bits { | |
266 | TXOWN = 0x80000000, /* own bit */ | |
267 | JABTO = 0x00004000, /* jabber timeout */ | |
268 | CSL = 0x00002000, /* carrier sense lost */ | |
269 | LC = 0x00001000, /* late collision */ | |
270 | EC = 0x00000800, /* excessive collision */ | |
271 | UDF = 0x00000400, /* fifo underflow */ | |
272 | DFR = 0x00000200, /* deferred */ | |
273 | HF = 0x00000100, /* heartbeat fail */ | |
274 | NCRMask = 0x000000ff, /* collision retry count */ | |
275 | NCRShift = 0, | |
276 | }; | |
277 | ||
278 | enum tx_desc_control_bits { | |
279 | TXIC = 0x80000000, /* interrupt control */ | |
280 | ETIControl = 0x40000000, /* early transmit interrupt */ | |
281 | TXLD = 0x20000000, /* last descriptor */ | |
282 | TXFD = 0x10000000, /* first descriptor */ | |
283 | CRCEnable = 0x08000000, /* crc control */ | |
284 | PADEnable = 0x04000000, /* padding control */ | |
285 | RetryTxLC = 0x02000000, /* retry late collision */ | |
286 | PKTSMask = 0x3ff800, /* packet size bit21-11 */ | |
287 | PKTSShift = 11, | |
288 | TBSMask = 0x000007ff, /* transmit buffer bit 10-0 */ | |
289 | TBSShift = 0, | |
290 | }; | |
291 | ||
292 | /* BootROM/EEPROM/MII Management Register */ | |
293 | #define MASK_MIIR_MII_READ 0x00000000 | |
294 | #define MASK_MIIR_MII_WRITE 0x00000008 | |
295 | #define MASK_MIIR_MII_MDO 0x00000004 | |
296 | #define MASK_MIIR_MII_MDI 0x00000002 | |
297 | #define MASK_MIIR_MII_MDC 0x00000001 | |
298 | ||
299 | /* ST+OP+PHYAD+REGAD+TA */ | |
300 | #define OP_READ 0x6000 /* ST:01+OP:10+PHYAD+REGAD+TA:Z0 */ | |
301 | #define OP_WRITE 0x5002 /* ST:01+OP:01+PHYAD+REGAD+TA:10 */ | |
302 | ||
303 | /* ------------------------------------------------------------------------- */ | |
304 | /* Constants for Myson PHY */ | |
305 | /* ------------------------------------------------------------------------- */ | |
306 | #define MysonPHYID 0xd0000302 | |
307 | /* 89-7-27 add, (begin) */ | |
308 | #define MysonPHYID0 0x0302 | |
309 | #define StatusRegister 18 | |
310 | #define SPEED100 0x0400 // bit10 | |
311 | #define FULLMODE 0x0800 // bit11 | |
312 | /* 89-7-27 add, (end) */ | |
313 | ||
314 | /* ------------------------------------------------------------------------- */ | |
315 | /* Constants for Seeq 80225 PHY */ | |
316 | /* ------------------------------------------------------------------------- */ | |
317 | #define SeeqPHYID0 0x0016 | |
318 | ||
319 | #define MIIRegister18 18 | |
320 | #define SPD_DET_100 0x80 | |
321 | #define DPLX_DET_FULL 0x40 | |
322 | ||
323 | /* ------------------------------------------------------------------------- */ | |
324 | /* Constants for Ahdoc 101 PHY */ | |
325 | /* ------------------------------------------------------------------------- */ | |
326 | #define AhdocPHYID0 0x0022 | |
327 | ||
328 | #define DiagnosticReg 18 | |
329 | #define DPLX_FULL 0x0800 | |
330 | #define Speed_100 0x0400 | |
331 | ||
332 | /* 89/6/13 add, */ | |
333 | /* -------------------------------------------------------------------------- */ | |
334 | /* Constants */ | |
335 | /* -------------------------------------------------------------------------- */ | |
336 | #define MarvellPHYID0 0x0141 | |
337 | #define LevelOnePHYID0 0x0013 | |
338 | ||
339 | #define MII1000BaseTControlReg 9 | |
340 | #define MII1000BaseTStatusReg 10 | |
341 | #define SpecificReg 17 | |
342 | ||
343 | /* for 1000BaseT Control Register */ | |
344 | #define PHYAbletoPerform1000FullDuplex 0x0200 | |
345 | #define PHYAbletoPerform1000HalfDuplex 0x0100 | |
346 | #define PHY1000AbilityMask 0x300 | |
347 | ||
348 | // for phy specific status register, marvell phy. | |
349 | #define SpeedMask 0x0c000 | |
350 | #define Speed_1000M 0x08000 | |
351 | #define Speed_100M 0x4000 | |
352 | #define Speed_10M 0 | |
353 | #define Full_Duplex 0x2000 | |
354 | ||
355 | // 89/12/29 add, for phy specific status register, levelone phy, (begin) | |
356 | #define LXT1000_100M 0x08000 | |
357 | #define LXT1000_1000M 0x0c000 | |
358 | #define LXT1000_Full 0x200 | |
359 | // 89/12/29 add, for phy specific status register, levelone phy, (end) | |
360 | ||
361 | /* for 3-in-1 case, BMCRSR register */ | |
362 | #define LinkIsUp2 0x00040000 | |
363 | ||
364 | /* for PHY */ | |
365 | #define LinkIsUp 0x0004 | |
366 | ||
367 | ||
368 | struct netdev_private { | |
369 | /* Descriptor rings first for alignment. */ | |
370 | struct fealnx_desc *rx_ring; | |
371 | struct fealnx_desc *tx_ring; | |
372 | ||
373 | dma_addr_t rx_ring_dma; | |
374 | dma_addr_t tx_ring_dma; | |
375 | ||
376 | spinlock_t lock; | |
377 | ||
378 | /* Media monitoring timer. */ | |
379 | struct timer_list timer; | |
380 | ||
381 | /* Reset timer */ | |
382 | struct timer_list reset_timer; | |
383 | int reset_timer_armed; | |
384 | unsigned long crvalue_sv; | |
385 | unsigned long imrvalue_sv; | |
386 | ||
387 | /* Frequently used values: keep some adjacent for cache effect. */ | |
388 | int flags; | |
389 | struct pci_dev *pci_dev; | |
390 | unsigned long crvalue; | |
391 | unsigned long bcrvalue; | |
392 | unsigned long imrvalue; | |
393 | struct fealnx_desc *cur_rx; | |
394 | struct fealnx_desc *lack_rxbuf; | |
395 | int really_rx_count; | |
396 | struct fealnx_desc *cur_tx; | |
397 | struct fealnx_desc *cur_tx_copy; | |
398 | int really_tx_count; | |
399 | int free_tx_count; | |
400 | unsigned int rx_buf_sz; /* Based on MTU+slack. */ | |
401 | ||
402 | /* These values are keep track of the transceiver/media in use. */ | |
403 | unsigned int linkok; | |
404 | unsigned int line_speed; | |
405 | unsigned int duplexmode; | |
406 | unsigned int default_port:4; /* Last dev->if_port value. */ | |
407 | unsigned int PHYType; | |
408 | ||
409 | /* MII transceiver section. */ | |
410 | int mii_cnt; /* MII device addresses. */ | |
411 | unsigned char phys[2]; /* MII device addresses. */ | |
412 | struct mii_if_info mii; | |
413 | void __iomem *mem; | |
414 | }; | |
415 | ||
416 | ||
417 | static int mdio_read(struct net_device *dev, int phy_id, int location); | |
418 | static void mdio_write(struct net_device *dev, int phy_id, int location, int value); | |
419 | static int netdev_open(struct net_device *dev); | |
420 | static void getlinktype(struct net_device *dev); | |
421 | static void getlinkstatus(struct net_device *dev); | |
422 | static void netdev_timer(struct timer_list *t); | |
423 | static void reset_timer(struct timer_list *t); | |
424 | static void fealnx_tx_timeout(struct net_device *dev, unsigned int txqueue); | |
425 | static void init_ring(struct net_device *dev); | |
426 | static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev); | |
427 | static irqreturn_t intr_handler(int irq, void *dev_instance); | |
428 | static int netdev_rx(struct net_device *dev); | |
429 | static void set_rx_mode(struct net_device *dev); | |
430 | static void __set_rx_mode(struct net_device *dev); | |
431 | static struct net_device_stats *get_stats(struct net_device *dev); | |
432 | static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
433 | static const struct ethtool_ops netdev_ethtool_ops; | |
434 | static int netdev_close(struct net_device *dev); | |
435 | static void reset_rx_descriptors(struct net_device *dev); | |
436 | static void reset_tx_descriptors(struct net_device *dev); | |
437 | ||
438 | static void stop_nic_rx(void __iomem *ioaddr, long crvalue) | |
439 | { | |
440 | int delay = 0x1000; | |
441 | iowrite32(crvalue & ~(CR_W_RXEN), ioaddr + TCRRCR); | |
442 | while (--delay) { | |
443 | if ( (ioread32(ioaddr + TCRRCR) & CR_R_RXSTOP) == CR_R_RXSTOP) | |
444 | break; | |
445 | } | |
446 | } | |
447 | ||
448 | ||
449 | static void stop_nic_rxtx(void __iomem *ioaddr, long crvalue) | |
450 | { | |
451 | int delay = 0x1000; | |
452 | iowrite32(crvalue & ~(CR_W_RXEN+CR_W_TXEN), ioaddr + TCRRCR); | |
453 | while (--delay) { | |
454 | if ( (ioread32(ioaddr + TCRRCR) & (CR_R_RXSTOP+CR_R_TXSTOP)) | |
455 | == (CR_R_RXSTOP+CR_R_TXSTOP) ) | |
456 | break; | |
457 | } | |
458 | } | |
459 | ||
460 | static const struct net_device_ops netdev_ops = { | |
461 | .ndo_open = netdev_open, | |
462 | .ndo_stop = netdev_close, | |
463 | .ndo_start_xmit = start_tx, | |
464 | .ndo_get_stats = get_stats, | |
465 | .ndo_set_rx_mode = set_rx_mode, | |
466 | .ndo_eth_ioctl = mii_ioctl, | |
467 | .ndo_tx_timeout = fealnx_tx_timeout, | |
468 | .ndo_set_mac_address = eth_mac_addr, | |
469 | .ndo_validate_addr = eth_validate_addr, | |
470 | }; | |
471 | ||
472 | static int fealnx_init_one(struct pci_dev *pdev, | |
473 | const struct pci_device_id *ent) | |
474 | { | |
475 | struct netdev_private *np; | |
476 | int i, option, err, irq; | |
477 | static int card_idx = -1; | |
478 | char boardname[12]; | |
479 | void __iomem *ioaddr; | |
480 | unsigned long len; | |
481 | unsigned int chip_id = ent->driver_data; | |
482 | struct net_device *dev; | |
483 | void *ring_space; | |
484 | dma_addr_t ring_dma; | |
485 | u8 addr[ETH_ALEN]; | |
486 | #ifdef USE_IO_OPS | |
487 | int bar = 0; | |
488 | #else | |
489 | int bar = 1; | |
490 | #endif | |
491 | ||
492 | card_idx++; | |
493 | sprintf(boardname, "fealnx%d", card_idx); | |
494 | ||
495 | option = card_idx < MAX_UNITS ? options[card_idx] : 0; | |
496 | ||
497 | i = pci_enable_device(pdev); | |
498 | if (i) return i; | |
499 | pci_set_master(pdev); | |
500 | ||
501 | len = pci_resource_len(pdev, bar); | |
502 | if (len < MIN_REGION_SIZE) { | |
503 | dev_err(&pdev->dev, | |
504 | "region size %ld too small, aborting\n", len); | |
505 | return -ENODEV; | |
506 | } | |
507 | ||
508 | i = pci_request_regions(pdev, boardname); | |
509 | if (i) | |
510 | return i; | |
511 | ||
512 | irq = pdev->irq; | |
513 | ||
514 | ioaddr = pci_iomap(pdev, bar, len); | |
515 | if (!ioaddr) { | |
516 | err = -ENOMEM; | |
517 | goto err_out_res; | |
518 | } | |
519 | ||
520 | dev = alloc_etherdev(sizeof(struct netdev_private)); | |
521 | if (!dev) { | |
522 | err = -ENOMEM; | |
523 | goto err_out_unmap; | |
524 | } | |
525 | SET_NETDEV_DEV(dev, &pdev->dev); | |
526 | ||
527 | /* read ethernet id */ | |
528 | for (i = 0; i < 6; ++i) | |
529 | addr[i] = ioread8(ioaddr + PAR0 + i); | |
530 | eth_hw_addr_set(dev, addr); | |
531 | ||
532 | /* Reset the chip to erase previous misconfiguration. */ | |
533 | iowrite32(0x00000001, ioaddr + BCR); | |
534 | ||
535 | /* Make certain the descriptor lists are aligned. */ | |
536 | np = netdev_priv(dev); | |
537 | np->mem = ioaddr; | |
538 | spin_lock_init(&np->lock); | |
539 | np->pci_dev = pdev; | |
540 | np->flags = skel_netdrv_tbl[chip_id].flags; | |
541 | pci_set_drvdata(pdev, dev); | |
542 | np->mii.dev = dev; | |
543 | np->mii.mdio_read = mdio_read; | |
544 | np->mii.mdio_write = mdio_write; | |
545 | np->mii.phy_id_mask = 0x1f; | |
546 | np->mii.reg_num_mask = 0x1f; | |
547 | ||
548 | ring_space = dma_alloc_coherent(&pdev->dev, RX_TOTAL_SIZE, &ring_dma, | |
549 | GFP_KERNEL); | |
550 | if (!ring_space) { | |
551 | err = -ENOMEM; | |
552 | goto err_out_free_dev; | |
553 | } | |
554 | np->rx_ring = ring_space; | |
555 | np->rx_ring_dma = ring_dma; | |
556 | ||
557 | ring_space = dma_alloc_coherent(&pdev->dev, TX_TOTAL_SIZE, &ring_dma, | |
558 | GFP_KERNEL); | |
559 | if (!ring_space) { | |
560 | err = -ENOMEM; | |
561 | goto err_out_free_rx; | |
562 | } | |
563 | np->tx_ring = ring_space; | |
564 | np->tx_ring_dma = ring_dma; | |
565 | ||
566 | /* find the connected MII xcvrs */ | |
567 | if (np->flags == HAS_MII_XCVR) { | |
568 | int phy, phy_idx = 0; | |
569 | ||
570 | for (phy = 1; phy < 32 && phy_idx < ARRAY_SIZE(np->phys); | |
571 | phy++) { | |
572 | int mii_status = mdio_read(dev, phy, 1); | |
573 | ||
574 | if (mii_status != 0xffff && mii_status != 0x0000) { | |
575 | np->phys[phy_idx++] = phy; | |
576 | dev_info(&pdev->dev, | |
577 | "MII PHY found at address %d, status " | |
578 | "0x%4.4x.\n", phy, mii_status); | |
579 | /* get phy type */ | |
580 | { | |
581 | unsigned int data; | |
582 | ||
583 | data = mdio_read(dev, np->phys[0], 2); | |
584 | if (data == SeeqPHYID0) | |
585 | np->PHYType = SeeqPHY; | |
586 | else if (data == AhdocPHYID0) | |
587 | np->PHYType = AhdocPHY; | |
588 | else if (data == MarvellPHYID0) | |
589 | np->PHYType = MarvellPHY; | |
590 | else if (data == MysonPHYID0) | |
591 | np->PHYType = Myson981; | |
592 | else if (data == LevelOnePHYID0) | |
593 | np->PHYType = LevelOnePHY; | |
594 | else | |
595 | np->PHYType = OtherPHY; | |
596 | } | |
597 | } | |
598 | } | |
599 | ||
600 | np->mii_cnt = phy_idx; | |
601 | if (phy_idx == 0) | |
602 | dev_warn(&pdev->dev, | |
603 | "MII PHY not found -- this device may " | |
604 | "not operate correctly.\n"); | |
605 | } else { | |
606 | np->phys[0] = 32; | |
607 | /* 89/6/23 add, (begin) */ | |
608 | /* get phy type */ | |
609 | if (ioread32(ioaddr + PHYIDENTIFIER) == MysonPHYID) | |
610 | np->PHYType = MysonPHY; | |
611 | else | |
612 | np->PHYType = OtherPHY; | |
613 | } | |
614 | np->mii.phy_id = np->phys[0]; | |
615 | ||
616 | if (dev->mem_start) | |
617 | option = dev->mem_start; | |
618 | ||
619 | /* The lower four bits are the media type. */ | |
620 | if (option > 0) { | |
621 | if (option & 0x200) | |
622 | np->mii.full_duplex = 1; | |
623 | np->default_port = option & 15; | |
624 | } | |
625 | ||
626 | if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0) | |
627 | np->mii.full_duplex = full_duplex[card_idx]; | |
628 | ||
629 | if (np->mii.full_duplex) { | |
630 | dev_info(&pdev->dev, "Media type forced to Full Duplex.\n"); | |
631 | /* 89/6/13 add, (begin) */ | |
632 | // if (np->PHYType==MarvellPHY) | |
633 | if ((np->PHYType == MarvellPHY) || (np->PHYType == LevelOnePHY)) { | |
634 | unsigned int data; | |
635 | ||
636 | data = mdio_read(dev, np->phys[0], 9); | |
637 | data = (data & 0xfcff) | 0x0200; | |
638 | mdio_write(dev, np->phys[0], 9, data); | |
639 | } | |
640 | /* 89/6/13 add, (end) */ | |
641 | if (np->flags == HAS_MII_XCVR) | |
642 | mdio_write(dev, np->phys[0], MII_ADVERTISE, ADVERTISE_FULL); | |
643 | else | |
644 | iowrite32(ADVERTISE_FULL, ioaddr + ANARANLPAR); | |
645 | np->mii.force_media = 1; | |
646 | } | |
647 | ||
648 | dev->netdev_ops = &netdev_ops; | |
649 | dev->ethtool_ops = &netdev_ethtool_ops; | |
650 | dev->watchdog_timeo = TX_TIMEOUT; | |
651 | ||
652 | err = register_netdev(dev); | |
653 | if (err) | |
654 | goto err_out_free_tx; | |
655 | ||
656 | printk(KERN_INFO "%s: %s at %p, %pM, IRQ %d.\n", | |
657 | dev->name, skel_netdrv_tbl[chip_id].chip_name, ioaddr, | |
658 | dev->dev_addr, irq); | |
659 | ||
660 | return 0; | |
661 | ||
662 | err_out_free_tx: | |
663 | dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE, np->tx_ring, | |
664 | np->tx_ring_dma); | |
665 | err_out_free_rx: | |
666 | dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE, np->rx_ring, | |
667 | np->rx_ring_dma); | |
668 | err_out_free_dev: | |
669 | free_netdev(dev); | |
670 | err_out_unmap: | |
671 | pci_iounmap(pdev, ioaddr); | |
672 | err_out_res: | |
673 | pci_release_regions(pdev); | |
674 | return err; | |
675 | } | |
676 | ||
677 | ||
678 | static void fealnx_remove_one(struct pci_dev *pdev) | |
679 | { | |
680 | struct net_device *dev = pci_get_drvdata(pdev); | |
681 | ||
682 | if (dev) { | |
683 | struct netdev_private *np = netdev_priv(dev); | |
684 | ||
685 | dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE, np->tx_ring, | |
686 | np->tx_ring_dma); | |
687 | dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE, np->rx_ring, | |
688 | np->rx_ring_dma); | |
689 | unregister_netdev(dev); | |
690 | pci_iounmap(pdev, np->mem); | |
691 | free_netdev(dev); | |
692 | pci_release_regions(pdev); | |
693 | } else | |
694 | printk(KERN_ERR "fealnx: remove for unknown device\n"); | |
695 | } | |
696 | ||
697 | ||
698 | static ulong m80x_send_cmd_to_phy(void __iomem *miiport, int opcode, int phyad, int regad) | |
699 | { | |
700 | ulong miir; | |
701 | int i; | |
702 | unsigned int mask, data; | |
703 | ||
704 | /* enable MII output */ | |
705 | miir = (ulong) ioread32(miiport); | |
706 | miir &= 0xfffffff0; | |
707 | ||
708 | miir |= MASK_MIIR_MII_WRITE + MASK_MIIR_MII_MDO; | |
709 | ||
710 | /* send 32 1's preamble */ | |
711 | for (i = 0; i < 32; i++) { | |
712 | /* low MDC; MDO is already high (miir) */ | |
713 | miir &= ~MASK_MIIR_MII_MDC; | |
714 | iowrite32(miir, miiport); | |
715 | ||
716 | /* high MDC */ | |
717 | miir |= MASK_MIIR_MII_MDC; | |
718 | iowrite32(miir, miiport); | |
719 | } | |
720 | ||
721 | /* calculate ST+OP+PHYAD+REGAD+TA */ | |
722 | data = opcode | (phyad << 7) | (regad << 2); | |
723 | ||
724 | /* sent out */ | |
725 | mask = 0x8000; | |
726 | while (mask) { | |
727 | /* low MDC, prepare MDO */ | |
728 | miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO); | |
729 | if (mask & data) | |
730 | miir |= MASK_MIIR_MII_MDO; | |
731 | ||
732 | iowrite32(miir, miiport); | |
733 | /* high MDC */ | |
734 | miir |= MASK_MIIR_MII_MDC; | |
735 | iowrite32(miir, miiport); | |
736 | udelay(30); | |
737 | ||
738 | /* next */ | |
739 | mask >>= 1; | |
740 | if (mask == 0x2 && opcode == OP_READ) | |
741 | miir &= ~MASK_MIIR_MII_WRITE; | |
742 | } | |
743 | return miir; | |
744 | } | |
745 | ||
746 | ||
747 | static int mdio_read(struct net_device *dev, int phyad, int regad) | |
748 | { | |
749 | struct netdev_private *np = netdev_priv(dev); | |
750 | void __iomem *miiport = np->mem + MANAGEMENT; | |
751 | ulong miir; | |
752 | unsigned int mask, data; | |
753 | ||
754 | miir = m80x_send_cmd_to_phy(miiport, OP_READ, phyad, regad); | |
755 | ||
756 | /* read data */ | |
757 | mask = 0x8000; | |
758 | data = 0; | |
759 | while (mask) { | |
760 | /* low MDC */ | |
761 | miir &= ~MASK_MIIR_MII_MDC; | |
762 | iowrite32(miir, miiport); | |
763 | ||
764 | /* read MDI */ | |
765 | miir = ioread32(miiport); | |
766 | if (miir & MASK_MIIR_MII_MDI) | |
767 | data |= mask; | |
768 | ||
769 | /* high MDC, and wait */ | |
770 | miir |= MASK_MIIR_MII_MDC; | |
771 | iowrite32(miir, miiport); | |
772 | udelay(30); | |
773 | ||
774 | /* next */ | |
775 | mask >>= 1; | |
776 | } | |
777 | ||
778 | /* low MDC */ | |
779 | miir &= ~MASK_MIIR_MII_MDC; | |
780 | iowrite32(miir, miiport); | |
781 | ||
782 | return data & 0xffff; | |
783 | } | |
784 | ||
785 | ||
786 | static void mdio_write(struct net_device *dev, int phyad, int regad, int data) | |
787 | { | |
788 | struct netdev_private *np = netdev_priv(dev); | |
789 | void __iomem *miiport = np->mem + MANAGEMENT; | |
790 | ulong miir; | |
791 | unsigned int mask; | |
792 | ||
793 | miir = m80x_send_cmd_to_phy(miiport, OP_WRITE, phyad, regad); | |
794 | ||
795 | /* write data */ | |
796 | mask = 0x8000; | |
797 | while (mask) { | |
798 | /* low MDC, prepare MDO */ | |
799 | miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO); | |
800 | if (mask & data) | |
801 | miir |= MASK_MIIR_MII_MDO; | |
802 | iowrite32(miir, miiport); | |
803 | ||
804 | /* high MDC */ | |
805 | miir |= MASK_MIIR_MII_MDC; | |
806 | iowrite32(miir, miiport); | |
807 | ||
808 | /* next */ | |
809 | mask >>= 1; | |
810 | } | |
811 | ||
812 | /* low MDC */ | |
813 | miir &= ~MASK_MIIR_MII_MDC; | |
814 | iowrite32(miir, miiport); | |
815 | } | |
816 | ||
817 | ||
818 | static int netdev_open(struct net_device *dev) | |
819 | { | |
820 | struct netdev_private *np = netdev_priv(dev); | |
821 | void __iomem *ioaddr = np->mem; | |
822 | const int irq = np->pci_dev->irq; | |
823 | int rc, i; | |
824 | ||
825 | iowrite32(0x00000001, ioaddr + BCR); /* Reset */ | |
826 | ||
827 | rc = request_irq(irq, intr_handler, IRQF_SHARED, dev->name, dev); | |
828 | if (rc) | |
829 | return -EAGAIN; | |
830 | ||
831 | for (i = 0; i < 3; i++) | |
832 | iowrite16(((const unsigned short *)dev->dev_addr)[i], | |
833 | ioaddr + PAR0 + i*2); | |
834 | ||
835 | init_ring(dev); | |
836 | ||
837 | iowrite32(np->rx_ring_dma, ioaddr + RXLBA); | |
838 | iowrite32(np->tx_ring_dma, ioaddr + TXLBA); | |
839 | ||
840 | /* Initialize other registers. */ | |
841 | /* Configure the PCI bus bursts and FIFO thresholds. | |
842 | 486: Set 8 longword burst. | |
843 | 586: no burst limit. | |
844 | Burst length 5:3 | |
845 | 0 0 0 1 | |
846 | 0 0 1 4 | |
847 | 0 1 0 8 | |
848 | 0 1 1 16 | |
849 | 1 0 0 32 | |
850 | 1 0 1 64 | |
851 | 1 1 0 128 | |
852 | 1 1 1 256 | |
853 | Wait the specified 50 PCI cycles after a reset by initializing | |
854 | Tx and Rx queues and the address filter list. | |
855 | FIXME (Ueimor): optimistic for alpha + posted writes ? */ | |
856 | ||
857 | np->bcrvalue = 0x10; /* little-endian, 8 burst length */ | |
858 | #ifdef __BIG_ENDIAN | |
859 | np->bcrvalue |= 0x04; /* big-endian */ | |
860 | #endif | |
861 | ||
862 | #if defined(__i386__) && !defined(MODULE) && !defined(CONFIG_UML) | |
863 | if (boot_cpu_data.x86 <= 4) | |
864 | np->crvalue = 0xa00; | |
865 | else | |
866 | #endif | |
867 | np->crvalue = 0xe00; /* rx 128 burst length */ | |
868 | ||
869 | ||
870 | // 89/12/29 add, | |
871 | // 90/1/16 modify, | |
872 | // np->imrvalue=FBE|TUNF|CNTOVF|RBU|TI|RI; | |
873 | np->imrvalue = TUNF | CNTOVF | RBU | TI | RI; | |
874 | if (np->pci_dev->device == 0x891) { | |
875 | np->bcrvalue |= 0x200; /* set PROG bit */ | |
876 | np->crvalue |= CR_W_ENH; /* set enhanced bit */ | |
877 | np->imrvalue |= ETI; | |
878 | } | |
879 | iowrite32(np->bcrvalue, ioaddr + BCR); | |
880 | ||
881 | if (dev->if_port == 0) | |
882 | dev->if_port = np->default_port; | |
883 | ||
884 | iowrite32(0, ioaddr + RXPDR); | |
885 | // 89/9/1 modify, | |
886 | // np->crvalue = 0x00e40001; /* tx store and forward, tx/rx enable */ | |
887 | np->crvalue |= 0x00e40001; /* tx store and forward, tx/rx enable */ | |
888 | np->mii.full_duplex = np->mii.force_media; | |
889 | getlinkstatus(dev); | |
890 | if (np->linkok) | |
891 | getlinktype(dev); | |
892 | __set_rx_mode(dev); | |
893 | ||
894 | netif_start_queue(dev); | |
895 | ||
896 | /* Clear and Enable interrupts by setting the interrupt mask. */ | |
897 | iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR); | |
898 | iowrite32(np->imrvalue, ioaddr + IMR); | |
899 | ||
900 | if (debug) | |
901 | printk(KERN_DEBUG "%s: Done netdev_open().\n", dev->name); | |
902 | ||
903 | /* Set the timer to check for link beat. */ | |
904 | timer_setup(&np->timer, netdev_timer, 0); | |
905 | np->timer.expires = RUN_AT(3 * HZ); | |
906 | ||
907 | /* timer handler */ | |
908 | add_timer(&np->timer); | |
909 | ||
910 | timer_setup(&np->reset_timer, reset_timer, 0); | |
911 | np->reset_timer_armed = 0; | |
912 | return rc; | |
913 | } | |
914 | ||
915 | ||
916 | static void getlinkstatus(struct net_device *dev) | |
917 | /* function: Routine will read MII Status Register to get link status. */ | |
918 | /* input : dev... pointer to the adapter block. */ | |
919 | /* output : none. */ | |
920 | { | |
921 | struct netdev_private *np = netdev_priv(dev); | |
922 | unsigned int i, DelayTime = 0x1000; | |
923 | ||
924 | np->linkok = 0; | |
925 | ||
926 | if (np->PHYType == MysonPHY) { | |
927 | for (i = 0; i < DelayTime; ++i) { | |
928 | if (ioread32(np->mem + BMCRSR) & LinkIsUp2) { | |
929 | np->linkok = 1; | |
930 | return; | |
931 | } | |
932 | udelay(100); | |
933 | } | |
934 | } else { | |
935 | for (i = 0; i < DelayTime; ++i) { | |
936 | if (mdio_read(dev, np->phys[0], MII_BMSR) & BMSR_LSTATUS) { | |
937 | np->linkok = 1; | |
938 | return; | |
939 | } | |
940 | udelay(100); | |
941 | } | |
942 | } | |
943 | } | |
944 | ||
945 | ||
946 | static void getlinktype(struct net_device *dev) | |
947 | { | |
948 | struct netdev_private *np = netdev_priv(dev); | |
949 | ||
950 | if (np->PHYType == MysonPHY) { /* 3-in-1 case */ | |
951 | if (ioread32(np->mem + TCRRCR) & CR_R_FD) | |
952 | np->duplexmode = 2; /* full duplex */ | |
953 | else | |
954 | np->duplexmode = 1; /* half duplex */ | |
955 | if (ioread32(np->mem + TCRRCR) & CR_R_PS10) | |
956 | np->line_speed = 1; /* 10M */ | |
957 | else | |
958 | np->line_speed = 2; /* 100M */ | |
959 | } else { | |
960 | if (np->PHYType == SeeqPHY) { /* this PHY is SEEQ 80225 */ | |
961 | unsigned int data; | |
962 | ||
963 | data = mdio_read(dev, np->phys[0], MIIRegister18); | |
964 | if (data & SPD_DET_100) | |
965 | np->line_speed = 2; /* 100M */ | |
966 | else | |
967 | np->line_speed = 1; /* 10M */ | |
968 | if (data & DPLX_DET_FULL) | |
969 | np->duplexmode = 2; /* full duplex mode */ | |
970 | else | |
971 | np->duplexmode = 1; /* half duplex mode */ | |
972 | } else if (np->PHYType == AhdocPHY) { | |
973 | unsigned int data; | |
974 | ||
975 | data = mdio_read(dev, np->phys[0], DiagnosticReg); | |
976 | if (data & Speed_100) | |
977 | np->line_speed = 2; /* 100M */ | |
978 | else | |
979 | np->line_speed = 1; /* 10M */ | |
980 | if (data & DPLX_FULL) | |
981 | np->duplexmode = 2; /* full duplex mode */ | |
982 | else | |
983 | np->duplexmode = 1; /* half duplex mode */ | |
984 | } | |
985 | /* 89/6/13 add, (begin) */ | |
986 | else if (np->PHYType == MarvellPHY) { | |
987 | unsigned int data; | |
988 | ||
989 | data = mdio_read(dev, np->phys[0], SpecificReg); | |
990 | if (data & Full_Duplex) | |
991 | np->duplexmode = 2; /* full duplex mode */ | |
992 | else | |
993 | np->duplexmode = 1; /* half duplex mode */ | |
994 | data &= SpeedMask; | |
995 | if (data == Speed_1000M) | |
996 | np->line_speed = 3; /* 1000M */ | |
997 | else if (data == Speed_100M) | |
998 | np->line_speed = 2; /* 100M */ | |
999 | else | |
1000 | np->line_speed = 1; /* 10M */ | |
1001 | } | |
1002 | /* 89/6/13 add, (end) */ | |
1003 | /* 89/7/27 add, (begin) */ | |
1004 | else if (np->PHYType == Myson981) { | |
1005 | unsigned int data; | |
1006 | ||
1007 | data = mdio_read(dev, np->phys[0], StatusRegister); | |
1008 | ||
1009 | if (data & SPEED100) | |
1010 | np->line_speed = 2; | |
1011 | else | |
1012 | np->line_speed = 1; | |
1013 | ||
1014 | if (data & FULLMODE) | |
1015 | np->duplexmode = 2; | |
1016 | else | |
1017 | np->duplexmode = 1; | |
1018 | } | |
1019 | /* 89/7/27 add, (end) */ | |
1020 | /* 89/12/29 add */ | |
1021 | else if (np->PHYType == LevelOnePHY) { | |
1022 | unsigned int data; | |
1023 | ||
1024 | data = mdio_read(dev, np->phys[0], SpecificReg); | |
1025 | if (data & LXT1000_Full) | |
1026 | np->duplexmode = 2; /* full duplex mode */ | |
1027 | else | |
1028 | np->duplexmode = 1; /* half duplex mode */ | |
1029 | data &= SpeedMask; | |
1030 | if (data == LXT1000_1000M) | |
1031 | np->line_speed = 3; /* 1000M */ | |
1032 | else if (data == LXT1000_100M) | |
1033 | np->line_speed = 2; /* 100M */ | |
1034 | else | |
1035 | np->line_speed = 1; /* 10M */ | |
1036 | } | |
1037 | np->crvalue &= (~CR_W_PS10) & (~CR_W_FD) & (~CR_W_PS1000); | |
1038 | if (np->line_speed == 1) | |
1039 | np->crvalue |= CR_W_PS10; | |
1040 | else if (np->line_speed == 3) | |
1041 | np->crvalue |= CR_W_PS1000; | |
1042 | if (np->duplexmode == 2) | |
1043 | np->crvalue |= CR_W_FD; | |
1044 | } | |
1045 | } | |
1046 | ||
1047 | ||
1048 | /* Take lock before calling this */ | |
1049 | static void allocate_rx_buffers(struct net_device *dev) | |
1050 | { | |
1051 | struct netdev_private *np = netdev_priv(dev); | |
1052 | ||
1053 | /* allocate skb for rx buffers */ | |
1054 | while (np->really_rx_count != RX_RING_SIZE) { | |
1055 | struct sk_buff *skb; | |
1056 | ||
1057 | skb = netdev_alloc_skb(dev, np->rx_buf_sz); | |
1058 | if (skb == NULL) | |
1059 | break; /* Better luck next round. */ | |
1060 | ||
1061 | while (np->lack_rxbuf->skbuff) | |
1062 | np->lack_rxbuf = np->lack_rxbuf->next_desc_logical; | |
1063 | ||
1064 | np->lack_rxbuf->skbuff = skb; | |
1065 | np->lack_rxbuf->buffer = dma_map_single(&np->pci_dev->dev, | |
1066 | skb->data, | |
1067 | np->rx_buf_sz, | |
1068 | DMA_FROM_DEVICE); | |
1069 | np->lack_rxbuf->status = RXOWN; | |
1070 | ++np->really_rx_count; | |
1071 | } | |
1072 | } | |
1073 | ||
1074 | ||
1075 | static void netdev_timer(struct timer_list *t) | |
1076 | { | |
1077 | struct netdev_private *np = from_timer(np, t, timer); | |
1078 | struct net_device *dev = np->mii.dev; | |
1079 | void __iomem *ioaddr = np->mem; | |
1080 | int old_crvalue = np->crvalue; | |
1081 | unsigned int old_linkok = np->linkok; | |
1082 | unsigned long flags; | |
1083 | ||
1084 | if (debug) | |
1085 | printk(KERN_DEBUG "%s: Media selection timer tick, status %8.8x " | |
1086 | "config %8.8x.\n", dev->name, ioread32(ioaddr + ISR), | |
1087 | ioread32(ioaddr + TCRRCR)); | |
1088 | ||
1089 | spin_lock_irqsave(&np->lock, flags); | |
1090 | ||
1091 | if (np->flags == HAS_MII_XCVR) { | |
1092 | getlinkstatus(dev); | |
1093 | if ((old_linkok == 0) && (np->linkok == 1)) { /* we need to detect the media type again */ | |
1094 | getlinktype(dev); | |
1095 | if (np->crvalue != old_crvalue) { | |
1096 | stop_nic_rxtx(ioaddr, np->crvalue); | |
1097 | iowrite32(np->crvalue, ioaddr + TCRRCR); | |
1098 | } | |
1099 | } | |
1100 | } | |
1101 | ||
1102 | allocate_rx_buffers(dev); | |
1103 | ||
1104 | spin_unlock_irqrestore(&np->lock, flags); | |
1105 | ||
1106 | np->timer.expires = RUN_AT(10 * HZ); | |
1107 | add_timer(&np->timer); | |
1108 | } | |
1109 | ||
1110 | ||
1111 | /* Take lock before calling */ | |
1112 | /* Reset chip and disable rx, tx and interrupts */ | |
1113 | static void reset_and_disable_rxtx(struct net_device *dev) | |
1114 | { | |
1115 | struct netdev_private *np = netdev_priv(dev); | |
1116 | void __iomem *ioaddr = np->mem; | |
1117 | int delay=51; | |
1118 | ||
1119 | /* Reset the chip's Tx and Rx processes. */ | |
1120 | stop_nic_rxtx(ioaddr, 0); | |
1121 | ||
1122 | /* Disable interrupts by clearing the interrupt mask. */ | |
1123 | iowrite32(0, ioaddr + IMR); | |
1124 | ||
1125 | /* Reset the chip to erase previous misconfiguration. */ | |
1126 | iowrite32(0x00000001, ioaddr + BCR); | |
1127 | ||
1128 | /* Ueimor: wait for 50 PCI cycles (and flush posted writes btw). | |
1129 | We surely wait too long (address+data phase). Who cares? */ | |
1130 | while (--delay) { | |
1131 | ioread32(ioaddr + BCR); | |
1132 | rmb(); | |
1133 | } | |
1134 | } | |
1135 | ||
1136 | ||
1137 | /* Take lock before calling */ | |
1138 | /* Restore chip after reset */ | |
1139 | static void enable_rxtx(struct net_device *dev) | |
1140 | { | |
1141 | struct netdev_private *np = netdev_priv(dev); | |
1142 | void __iomem *ioaddr = np->mem; | |
1143 | ||
1144 | reset_rx_descriptors(dev); | |
1145 | ||
1146 | iowrite32(np->tx_ring_dma + ((char*)np->cur_tx - (char*)np->tx_ring), | |
1147 | ioaddr + TXLBA); | |
1148 | iowrite32(np->rx_ring_dma + ((char*)np->cur_rx - (char*)np->rx_ring), | |
1149 | ioaddr + RXLBA); | |
1150 | ||
1151 | iowrite32(np->bcrvalue, ioaddr + BCR); | |
1152 | ||
1153 | iowrite32(0, ioaddr + RXPDR); | |
1154 | __set_rx_mode(dev); /* changes np->crvalue, writes it into TCRRCR */ | |
1155 | ||
1156 | /* Clear and Enable interrupts by setting the interrupt mask. */ | |
1157 | iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR); | |
1158 | iowrite32(np->imrvalue, ioaddr + IMR); | |
1159 | ||
1160 | iowrite32(0, ioaddr + TXPDR); | |
1161 | } | |
1162 | ||
1163 | ||
1164 | static void reset_timer(struct timer_list *t) | |
1165 | { | |
1166 | struct netdev_private *np = from_timer(np, t, reset_timer); | |
1167 | struct net_device *dev = np->mii.dev; | |
1168 | unsigned long flags; | |
1169 | ||
1170 | printk(KERN_WARNING "%s: resetting tx and rx machinery\n", dev->name); | |
1171 | ||
1172 | spin_lock_irqsave(&np->lock, flags); | |
1173 | np->crvalue = np->crvalue_sv; | |
1174 | np->imrvalue = np->imrvalue_sv; | |
1175 | ||
1176 | reset_and_disable_rxtx(dev); | |
1177 | /* works for me without this: | |
1178 | reset_tx_descriptors(dev); */ | |
1179 | enable_rxtx(dev); | |
1180 | netif_start_queue(dev); /* FIXME: or netif_wake_queue(dev); ? */ | |
1181 | ||
1182 | np->reset_timer_armed = 0; | |
1183 | ||
1184 | spin_unlock_irqrestore(&np->lock, flags); | |
1185 | } | |
1186 | ||
1187 | ||
1188 | static void fealnx_tx_timeout(struct net_device *dev, unsigned int txqueue) | |
1189 | { | |
1190 | struct netdev_private *np = netdev_priv(dev); | |
1191 | void __iomem *ioaddr = np->mem; | |
1192 | unsigned long flags; | |
1193 | int i; | |
1194 | ||
1195 | printk(KERN_WARNING | |
1196 | "%s: Transmit timed out, status %8.8x, resetting...\n", | |
1197 | dev->name, ioread32(ioaddr + ISR)); | |
1198 | ||
1199 | { | |
1200 | printk(KERN_DEBUG " Rx ring %p: ", np->rx_ring); | |
1201 | for (i = 0; i < RX_RING_SIZE; i++) | |
1202 | printk(KERN_CONT " %8.8x", | |
1203 | (unsigned int) np->rx_ring[i].status); | |
1204 | printk(KERN_CONT "\n"); | |
1205 | printk(KERN_DEBUG " Tx ring %p: ", np->tx_ring); | |
1206 | for (i = 0; i < TX_RING_SIZE; i++) | |
1207 | printk(KERN_CONT " %4.4x", np->tx_ring[i].status); | |
1208 | printk(KERN_CONT "\n"); | |
1209 | } | |
1210 | ||
1211 | spin_lock_irqsave(&np->lock, flags); | |
1212 | ||
1213 | reset_and_disable_rxtx(dev); | |
1214 | reset_tx_descriptors(dev); | |
1215 | enable_rxtx(dev); | |
1216 | ||
1217 | spin_unlock_irqrestore(&np->lock, flags); | |
1218 | ||
1219 | netif_trans_update(dev); /* prevent tx timeout */ | |
1220 | dev->stats.tx_errors++; | |
1221 | netif_wake_queue(dev); /* or .._start_.. ?? */ | |
1222 | } | |
1223 | ||
1224 | ||
1225 | /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ | |
1226 | static void init_ring(struct net_device *dev) | |
1227 | { | |
1228 | struct netdev_private *np = netdev_priv(dev); | |
1229 | int i; | |
1230 | ||
1231 | /* initialize rx variables */ | |
1232 | np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); | |
1233 | np->cur_rx = &np->rx_ring[0]; | |
1234 | np->lack_rxbuf = np->rx_ring; | |
1235 | np->really_rx_count = 0; | |
1236 | ||
1237 | /* initial rx descriptors. */ | |
1238 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1239 | np->rx_ring[i].status = 0; | |
1240 | np->rx_ring[i].control = np->rx_buf_sz << RBSShift; | |
1241 | np->rx_ring[i].next_desc = np->rx_ring_dma + | |
1242 | (i + 1)*sizeof(struct fealnx_desc); | |
1243 | np->rx_ring[i].next_desc_logical = &np->rx_ring[i + 1]; | |
1244 | np->rx_ring[i].skbuff = NULL; | |
1245 | } | |
1246 | ||
1247 | /* for the last rx descriptor */ | |
1248 | np->rx_ring[i - 1].next_desc = np->rx_ring_dma; | |
1249 | np->rx_ring[i - 1].next_desc_logical = np->rx_ring; | |
1250 | ||
1251 | /* allocate skb for rx buffers */ | |
1252 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1253 | struct sk_buff *skb = netdev_alloc_skb(dev, np->rx_buf_sz); | |
1254 | ||
1255 | if (skb == NULL) { | |
1256 | np->lack_rxbuf = &np->rx_ring[i]; | |
1257 | break; | |
1258 | } | |
1259 | ||
1260 | ++np->really_rx_count; | |
1261 | np->rx_ring[i].skbuff = skb; | |
1262 | np->rx_ring[i].buffer = dma_map_single(&np->pci_dev->dev, | |
1263 | skb->data, | |
1264 | np->rx_buf_sz, | |
1265 | DMA_FROM_DEVICE); | |
1266 | np->rx_ring[i].status = RXOWN; | |
1267 | np->rx_ring[i].control |= RXIC; | |
1268 | } | |
1269 | ||
1270 | /* initialize tx variables */ | |
1271 | np->cur_tx = &np->tx_ring[0]; | |
1272 | np->cur_tx_copy = &np->tx_ring[0]; | |
1273 | np->really_tx_count = 0; | |
1274 | np->free_tx_count = TX_RING_SIZE; | |
1275 | ||
1276 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1277 | np->tx_ring[i].status = 0; | |
1278 | /* do we need np->tx_ring[i].control = XXX; ?? */ | |
1279 | np->tx_ring[i].next_desc = np->tx_ring_dma + | |
1280 | (i + 1)*sizeof(struct fealnx_desc); | |
1281 | np->tx_ring[i].next_desc_logical = &np->tx_ring[i + 1]; | |
1282 | np->tx_ring[i].skbuff = NULL; | |
1283 | } | |
1284 | ||
1285 | /* for the last tx descriptor */ | |
1286 | np->tx_ring[i - 1].next_desc = np->tx_ring_dma; | |
1287 | np->tx_ring[i - 1].next_desc_logical = &np->tx_ring[0]; | |
1288 | } | |
1289 | ||
1290 | ||
1291 | static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev) | |
1292 | { | |
1293 | struct netdev_private *np = netdev_priv(dev); | |
1294 | unsigned long flags; | |
1295 | ||
1296 | spin_lock_irqsave(&np->lock, flags); | |
1297 | ||
1298 | np->cur_tx_copy->skbuff = skb; | |
1299 | ||
1300 | #define one_buffer | |
1301 | #define BPT 1022 | |
1302 | #if defined(one_buffer) | |
1303 | np->cur_tx_copy->buffer = dma_map_single(&np->pci_dev->dev, skb->data, | |
1304 | skb->len, DMA_TO_DEVICE); | |
1305 | np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable; | |
1306 | np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */ | |
1307 | np->cur_tx_copy->control |= (skb->len << TBSShift); /* buffer size */ | |
1308 | // 89/12/29 add, | |
1309 | if (np->pci_dev->device == 0x891) | |
1310 | np->cur_tx_copy->control |= ETIControl | RetryTxLC; | |
1311 | np->cur_tx_copy->status = TXOWN; | |
1312 | np->cur_tx_copy = np->cur_tx_copy->next_desc_logical; | |
1313 | --np->free_tx_count; | |
1314 | #elif defined(two_buffer) | |
1315 | if (skb->len > BPT) { | |
1316 | struct fealnx_desc *next; | |
1317 | ||
1318 | /* for the first descriptor */ | |
1319 | np->cur_tx_copy->buffer = dma_map_single(&np->pci_dev->dev, | |
1320 | skb->data, BPT, | |
1321 | DMA_TO_DEVICE); | |
1322 | np->cur_tx_copy->control = TXIC | TXFD | CRCEnable | PADEnable; | |
1323 | np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */ | |
1324 | np->cur_tx_copy->control |= (BPT << TBSShift); /* buffer size */ | |
1325 | ||
1326 | /* for the last descriptor */ | |
1327 | next = np->cur_tx_copy->next_desc_logical; | |
1328 | next->skbuff = skb; | |
1329 | next->control = TXIC | TXLD | CRCEnable | PADEnable; | |
1330 | next->control |= (skb->len << PKTSShift); /* pkt size */ | |
1331 | next->control |= ((skb->len - BPT) << TBSShift); /* buf size */ | |
1332 | // 89/12/29 add, | |
1333 | if (np->pci_dev->device == 0x891) | |
1334 | np->cur_tx_copy->control |= ETIControl | RetryTxLC; | |
1335 | next->buffer = dma_map_single(&ep->pci_dev->dev, | |
1336 | skb->data + BPT, skb->len - BPT, | |
1337 | DMA_TO_DEVICE); | |
1338 | ||
1339 | next->status = TXOWN; | |
1340 | np->cur_tx_copy->status = TXOWN; | |
1341 | ||
1342 | np->cur_tx_copy = next->next_desc_logical; | |
1343 | np->free_tx_count -= 2; | |
1344 | } else { | |
1345 | np->cur_tx_copy->buffer = dma_map_single(&np->pci_dev->dev, | |
1346 | skb->data, skb->len, | |
1347 | DMA_TO_DEVICE); | |
1348 | np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable; | |
1349 | np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */ | |
1350 | np->cur_tx_copy->control |= (skb->len << TBSShift); /* buffer size */ | |
1351 | // 89/12/29 add, | |
1352 | if (np->pci_dev->device == 0x891) | |
1353 | np->cur_tx_copy->control |= ETIControl | RetryTxLC; | |
1354 | np->cur_tx_copy->status = TXOWN; | |
1355 | np->cur_tx_copy = np->cur_tx_copy->next_desc_logical; | |
1356 | --np->free_tx_count; | |
1357 | } | |
1358 | #endif | |
1359 | ||
1360 | if (np->free_tx_count < 2) | |
1361 | netif_stop_queue(dev); | |
1362 | ++np->really_tx_count; | |
1363 | iowrite32(0, np->mem + TXPDR); | |
1364 | ||
1365 | spin_unlock_irqrestore(&np->lock, flags); | |
1366 | return NETDEV_TX_OK; | |
1367 | } | |
1368 | ||
1369 | ||
1370 | /* Take lock before calling */ | |
1371 | /* Chip probably hosed tx ring. Clean up. */ | |
1372 | static void reset_tx_descriptors(struct net_device *dev) | |
1373 | { | |
1374 | struct netdev_private *np = netdev_priv(dev); | |
1375 | struct fealnx_desc *cur; | |
1376 | int i; | |
1377 | ||
1378 | /* initialize tx variables */ | |
1379 | np->cur_tx = &np->tx_ring[0]; | |
1380 | np->cur_tx_copy = &np->tx_ring[0]; | |
1381 | np->really_tx_count = 0; | |
1382 | np->free_tx_count = TX_RING_SIZE; | |
1383 | ||
1384 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1385 | cur = &np->tx_ring[i]; | |
1386 | if (cur->skbuff) { | |
1387 | dma_unmap_single(&np->pci_dev->dev, cur->buffer, | |
1388 | cur->skbuff->len, DMA_TO_DEVICE); | |
1389 | dev_kfree_skb_any(cur->skbuff); | |
1390 | cur->skbuff = NULL; | |
1391 | } | |
1392 | cur->status = 0; | |
1393 | cur->control = 0; /* needed? */ | |
1394 | /* probably not needed. We do it for purely paranoid reasons */ | |
1395 | cur->next_desc = np->tx_ring_dma + | |
1396 | (i + 1)*sizeof(struct fealnx_desc); | |
1397 | cur->next_desc_logical = &np->tx_ring[i + 1]; | |
1398 | } | |
1399 | /* for the last tx descriptor */ | |
1400 | np->tx_ring[TX_RING_SIZE - 1].next_desc = np->tx_ring_dma; | |
1401 | np->tx_ring[TX_RING_SIZE - 1].next_desc_logical = &np->tx_ring[0]; | |
1402 | } | |
1403 | ||
1404 | ||
1405 | /* Take lock and stop rx before calling this */ | |
1406 | static void reset_rx_descriptors(struct net_device *dev) | |
1407 | { | |
1408 | struct netdev_private *np = netdev_priv(dev); | |
1409 | struct fealnx_desc *cur = np->cur_rx; | |
1410 | int i; | |
1411 | ||
1412 | allocate_rx_buffers(dev); | |
1413 | ||
1414 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1415 | if (cur->skbuff) | |
1416 | cur->status = RXOWN; | |
1417 | cur = cur->next_desc_logical; | |
1418 | } | |
1419 | ||
1420 | iowrite32(np->rx_ring_dma + ((char*)np->cur_rx - (char*)np->rx_ring), | |
1421 | np->mem + RXLBA); | |
1422 | } | |
1423 | ||
1424 | ||
1425 | /* The interrupt handler does all of the Rx thread work and cleans up | |
1426 | after the Tx thread. */ | |
1427 | static irqreturn_t intr_handler(int irq, void *dev_instance) | |
1428 | { | |
1429 | struct net_device *dev = (struct net_device *) dev_instance; | |
1430 | struct netdev_private *np = netdev_priv(dev); | |
1431 | void __iomem *ioaddr = np->mem; | |
1432 | long boguscnt = max_interrupt_work; | |
1433 | unsigned int num_tx = 0; | |
1434 | int handled = 0; | |
1435 | ||
1436 | spin_lock(&np->lock); | |
1437 | ||
1438 | iowrite32(0, ioaddr + IMR); | |
1439 | ||
1440 | do { | |
1441 | u32 intr_status = ioread32(ioaddr + ISR); | |
1442 | ||
1443 | /* Acknowledge all of the current interrupt sources ASAP. */ | |
1444 | iowrite32(intr_status, ioaddr + ISR); | |
1445 | ||
1446 | if (debug) | |
1447 | printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n", dev->name, | |
1448 | intr_status); | |
1449 | ||
1450 | if (!(intr_status & np->imrvalue)) | |
1451 | break; | |
1452 | ||
1453 | handled = 1; | |
1454 | ||
1455 | // 90/1/16 delete, | |
1456 | // | |
1457 | // if (intr_status & FBE) | |
1458 | // { /* fatal error */ | |
1459 | // stop_nic_tx(ioaddr, 0); | |
1460 | // stop_nic_rx(ioaddr, 0); | |
1461 | // break; | |
1462 | // }; | |
1463 | ||
1464 | if (intr_status & TUNF) | |
1465 | iowrite32(0, ioaddr + TXPDR); | |
1466 | ||
1467 | if (intr_status & CNTOVF) { | |
1468 | /* missed pkts */ | |
1469 | dev->stats.rx_missed_errors += | |
1470 | ioread32(ioaddr + TALLY) & 0x7fff; | |
1471 | ||
1472 | /* crc error */ | |
1473 | dev->stats.rx_crc_errors += | |
1474 | (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16; | |
1475 | } | |
1476 | ||
1477 | if (intr_status & (RI | RBU)) { | |
1478 | if (intr_status & RI) | |
1479 | netdev_rx(dev); | |
1480 | else { | |
1481 | stop_nic_rx(ioaddr, np->crvalue); | |
1482 | reset_rx_descriptors(dev); | |
1483 | iowrite32(np->crvalue, ioaddr + TCRRCR); | |
1484 | } | |
1485 | } | |
1486 | ||
1487 | while (np->really_tx_count) { | |
1488 | long tx_status = np->cur_tx->status; | |
1489 | long tx_control = np->cur_tx->control; | |
1490 | ||
1491 | if (!(tx_control & TXLD)) { /* this pkt is combined by two tx descriptors */ | |
1492 | struct fealnx_desc *next; | |
1493 | ||
1494 | next = np->cur_tx->next_desc_logical; | |
1495 | tx_status = next->status; | |
1496 | tx_control = next->control; | |
1497 | } | |
1498 | ||
1499 | if (tx_status & TXOWN) | |
1500 | break; | |
1501 | ||
1502 | if (!(np->crvalue & CR_W_ENH)) { | |
1503 | if (tx_status & (CSL | LC | EC | UDF | HF)) { | |
1504 | dev->stats.tx_errors++; | |
1505 | if (tx_status & EC) | |
1506 | dev->stats.tx_aborted_errors++; | |
1507 | if (tx_status & CSL) | |
1508 | dev->stats.tx_carrier_errors++; | |
1509 | if (tx_status & LC) | |
1510 | dev->stats.tx_window_errors++; | |
1511 | if (tx_status & UDF) | |
1512 | dev->stats.tx_fifo_errors++; | |
1513 | if ((tx_status & HF) && np->mii.full_duplex == 0) | |
1514 | dev->stats.tx_heartbeat_errors++; | |
1515 | ||
1516 | } else { | |
1517 | dev->stats.tx_bytes += | |
1518 | ((tx_control & PKTSMask) >> PKTSShift); | |
1519 | ||
1520 | dev->stats.collisions += | |
1521 | ((tx_status & NCRMask) >> NCRShift); | |
1522 | dev->stats.tx_packets++; | |
1523 | } | |
1524 | } else { | |
1525 | dev->stats.tx_bytes += | |
1526 | ((tx_control & PKTSMask) >> PKTSShift); | |
1527 | dev->stats.tx_packets++; | |
1528 | } | |
1529 | ||
1530 | /* Free the original skb. */ | |
1531 | dma_unmap_single(&np->pci_dev->dev, | |
1532 | np->cur_tx->buffer, | |
1533 | np->cur_tx->skbuff->len, | |
1534 | DMA_TO_DEVICE); | |
1535 | dev_consume_skb_irq(np->cur_tx->skbuff); | |
1536 | np->cur_tx->skbuff = NULL; | |
1537 | --np->really_tx_count; | |
1538 | if (np->cur_tx->control & TXLD) { | |
1539 | np->cur_tx = np->cur_tx->next_desc_logical; | |
1540 | ++np->free_tx_count; | |
1541 | } else { | |
1542 | np->cur_tx = np->cur_tx->next_desc_logical; | |
1543 | np->cur_tx = np->cur_tx->next_desc_logical; | |
1544 | np->free_tx_count += 2; | |
1545 | } | |
1546 | num_tx++; | |
1547 | } /* end of for loop */ | |
1548 | ||
1549 | if (num_tx && np->free_tx_count >= 2) | |
1550 | netif_wake_queue(dev); | |
1551 | ||
1552 | /* read transmit status for enhanced mode only */ | |
1553 | if (np->crvalue & CR_W_ENH) { | |
1554 | long data; | |
1555 | ||
1556 | data = ioread32(ioaddr + TSR); | |
1557 | dev->stats.tx_errors += (data & 0xff000000) >> 24; | |
1558 | dev->stats.tx_aborted_errors += | |
1559 | (data & 0xff000000) >> 24; | |
1560 | dev->stats.tx_window_errors += | |
1561 | (data & 0x00ff0000) >> 16; | |
1562 | dev->stats.collisions += (data & 0x0000ffff); | |
1563 | } | |
1564 | ||
1565 | if (--boguscnt < 0) { | |
1566 | printk(KERN_WARNING "%s: Too much work at interrupt, " | |
1567 | "status=0x%4.4x.\n", dev->name, intr_status); | |
1568 | if (!np->reset_timer_armed) { | |
1569 | np->reset_timer_armed = 1; | |
1570 | np->reset_timer.expires = RUN_AT(HZ/2); | |
1571 | add_timer(&np->reset_timer); | |
1572 | stop_nic_rxtx(ioaddr, 0); | |
1573 | netif_stop_queue(dev); | |
1574 | /* or netif_tx_disable(dev); ?? */ | |
1575 | /* Prevent other paths from enabling tx,rx,intrs */ | |
1576 | np->crvalue_sv = np->crvalue; | |
1577 | np->imrvalue_sv = np->imrvalue; | |
1578 | np->crvalue &= ~(CR_W_TXEN | CR_W_RXEN); /* or simply = 0? */ | |
1579 | np->imrvalue = 0; | |
1580 | } | |
1581 | ||
1582 | break; | |
1583 | } | |
1584 | } while (1); | |
1585 | ||
1586 | /* read the tally counters */ | |
1587 | /* missed pkts */ | |
1588 | dev->stats.rx_missed_errors += ioread32(ioaddr + TALLY) & 0x7fff; | |
1589 | ||
1590 | /* crc error */ | |
1591 | dev->stats.rx_crc_errors += | |
1592 | (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16; | |
1593 | ||
1594 | if (debug) | |
1595 | printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", | |
1596 | dev->name, ioread32(ioaddr + ISR)); | |
1597 | ||
1598 | iowrite32(np->imrvalue, ioaddr + IMR); | |
1599 | ||
1600 | spin_unlock(&np->lock); | |
1601 | ||
1602 | return IRQ_RETVAL(handled); | |
1603 | } | |
1604 | ||
1605 | ||
1606 | /* This routine is logically part of the interrupt handler, but separated | |
1607 | for clarity and better register allocation. */ | |
1608 | static int netdev_rx(struct net_device *dev) | |
1609 | { | |
1610 | struct netdev_private *np = netdev_priv(dev); | |
1611 | void __iomem *ioaddr = np->mem; | |
1612 | ||
1613 | /* If EOP is set on the next entry, it's a new packet. Send it up. */ | |
1614 | while (!(np->cur_rx->status & RXOWN) && np->cur_rx->skbuff) { | |
1615 | s32 rx_status = np->cur_rx->status; | |
1616 | ||
1617 | if (np->really_rx_count == 0) | |
1618 | break; | |
1619 | ||
1620 | if (debug) | |
1621 | printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n", rx_status); | |
1622 | ||
1623 | if ((!((rx_status & RXFSD) && (rx_status & RXLSD))) || | |
1624 | (rx_status & ErrorSummary)) { | |
1625 | if (rx_status & ErrorSummary) { /* there was a fatal error */ | |
1626 | if (debug) | |
1627 | printk(KERN_DEBUG | |
1628 | "%s: Receive error, Rx status %8.8x.\n", | |
1629 | dev->name, rx_status); | |
1630 | ||
1631 | dev->stats.rx_errors++; /* end of a packet. */ | |
1632 | if (rx_status & (LONGPKT | RUNTPKT)) | |
1633 | dev->stats.rx_length_errors++; | |
1634 | if (rx_status & RXER) | |
1635 | dev->stats.rx_frame_errors++; | |
1636 | if (rx_status & CRC) | |
1637 | dev->stats.rx_crc_errors++; | |
1638 | } else { | |
1639 | int need_to_reset = 0; | |
1640 | int desno = 0; | |
1641 | ||
1642 | if (rx_status & RXFSD) { /* this pkt is too long, over one rx buffer */ | |
1643 | struct fealnx_desc *cur; | |
1644 | ||
1645 | /* check this packet is received completely? */ | |
1646 | cur = np->cur_rx; | |
1647 | while (desno <= np->really_rx_count) { | |
1648 | ++desno; | |
1649 | if ((!(cur->status & RXOWN)) && | |
1650 | (cur->status & RXLSD)) | |
1651 | break; | |
1652 | /* goto next rx descriptor */ | |
1653 | cur = cur->next_desc_logical; | |
1654 | } | |
1655 | if (desno > np->really_rx_count) | |
1656 | need_to_reset = 1; | |
1657 | } else /* RXLSD did not find, something error */ | |
1658 | need_to_reset = 1; | |
1659 | ||
1660 | if (need_to_reset == 0) { | |
1661 | int i; | |
1662 | ||
1663 | dev->stats.rx_length_errors++; | |
1664 | ||
1665 | /* free all rx descriptors related this long pkt */ | |
1666 | for (i = 0; i < desno; ++i) { | |
1667 | if (!np->cur_rx->skbuff) { | |
1668 | printk(KERN_DEBUG | |
1669 | "%s: I'm scared\n", dev->name); | |
1670 | break; | |
1671 | } | |
1672 | np->cur_rx->status = RXOWN; | |
1673 | np->cur_rx = np->cur_rx->next_desc_logical; | |
1674 | } | |
1675 | continue; | |
1676 | } else { /* rx error, need to reset this chip */ | |
1677 | stop_nic_rx(ioaddr, np->crvalue); | |
1678 | reset_rx_descriptors(dev); | |
1679 | iowrite32(np->crvalue, ioaddr + TCRRCR); | |
1680 | } | |
1681 | break; /* exit the while loop */ | |
1682 | } | |
1683 | } else { /* this received pkt is ok */ | |
1684 | ||
1685 | struct sk_buff *skb; | |
1686 | /* Omit the four octet CRC from the length. */ | |
1687 | short pkt_len = ((rx_status & FLNGMASK) >> FLNGShift) - 4; | |
1688 | ||
1689 | #ifndef final_version | |
1690 | if (debug) | |
1691 | printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d" | |
1692 | " status %x.\n", pkt_len, rx_status); | |
1693 | #endif | |
1694 | ||
1695 | /* Check if the packet is long enough to accept without copying | |
1696 | to a minimally-sized skbuff. */ | |
1697 | if (pkt_len < rx_copybreak && | |
1698 | (skb = netdev_alloc_skb(dev, pkt_len + 2)) != NULL) { | |
1699 | skb_reserve(skb, 2); /* 16 byte align the IP header */ | |
1700 | dma_sync_single_for_cpu(&np->pci_dev->dev, | |
1701 | np->cur_rx->buffer, | |
1702 | np->rx_buf_sz, | |
1703 | DMA_FROM_DEVICE); | |
1704 | /* Call copy + cksum if available. */ | |
1705 | ||
1706 | #if ! defined(__alpha__) | |
1707 | skb_copy_to_linear_data(skb, | |
1708 | np->cur_rx->skbuff->data, pkt_len); | |
1709 | skb_put(skb, pkt_len); | |
1710 | #else | |
1711 | skb_put_data(skb, np->cur_rx->skbuff->data, | |
1712 | pkt_len); | |
1713 | #endif | |
1714 | dma_sync_single_for_device(&np->pci_dev->dev, | |
1715 | np->cur_rx->buffer, | |
1716 | np->rx_buf_sz, | |
1717 | DMA_FROM_DEVICE); | |
1718 | } else { | |
1719 | dma_unmap_single(&np->pci_dev->dev, | |
1720 | np->cur_rx->buffer, | |
1721 | np->rx_buf_sz, | |
1722 | DMA_FROM_DEVICE); | |
1723 | skb_put(skb = np->cur_rx->skbuff, pkt_len); | |
1724 | np->cur_rx->skbuff = NULL; | |
1725 | --np->really_rx_count; | |
1726 | } | |
1727 | skb->protocol = eth_type_trans(skb, dev); | |
1728 | netif_rx(skb); | |
1729 | dev->stats.rx_packets++; | |
1730 | dev->stats.rx_bytes += pkt_len; | |
1731 | } | |
1732 | ||
1733 | np->cur_rx = np->cur_rx->next_desc_logical; | |
1734 | } /* end of while loop */ | |
1735 | ||
1736 | /* allocate skb for rx buffers */ | |
1737 | allocate_rx_buffers(dev); | |
1738 | ||
1739 | return 0; | |
1740 | } | |
1741 | ||
1742 | ||
1743 | static struct net_device_stats *get_stats(struct net_device *dev) | |
1744 | { | |
1745 | struct netdev_private *np = netdev_priv(dev); | |
1746 | void __iomem *ioaddr = np->mem; | |
1747 | ||
1748 | /* The chip only need report frame silently dropped. */ | |
1749 | if (netif_running(dev)) { | |
1750 | dev->stats.rx_missed_errors += | |
1751 | ioread32(ioaddr + TALLY) & 0x7fff; | |
1752 | dev->stats.rx_crc_errors += | |
1753 | (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16; | |
1754 | } | |
1755 | ||
1756 | return &dev->stats; | |
1757 | } | |
1758 | ||
1759 | ||
1760 | /* for dev->set_multicast_list */ | |
1761 | static void set_rx_mode(struct net_device *dev) | |
1762 | { | |
1763 | spinlock_t *lp = &((struct netdev_private *)netdev_priv(dev))->lock; | |
1764 | unsigned long flags; | |
1765 | spin_lock_irqsave(lp, flags); | |
1766 | __set_rx_mode(dev); | |
1767 | spin_unlock_irqrestore(lp, flags); | |
1768 | } | |
1769 | ||
1770 | ||
1771 | /* Take lock before calling */ | |
1772 | static void __set_rx_mode(struct net_device *dev) | |
1773 | { | |
1774 | struct netdev_private *np = netdev_priv(dev); | |
1775 | void __iomem *ioaddr = np->mem; | |
1776 | u32 mc_filter[2]; /* Multicast hash filter */ | |
1777 | u32 rx_mode; | |
1778 | ||
1779 | if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ | |
1780 | memset(mc_filter, 0xff, sizeof(mc_filter)); | |
1781 | rx_mode = CR_W_PROM | CR_W_AB | CR_W_AM; | |
1782 | } else if ((netdev_mc_count(dev) > multicast_filter_limit) || | |
1783 | (dev->flags & IFF_ALLMULTI)) { | |
1784 | /* Too many to match, or accept all multicasts. */ | |
1785 | memset(mc_filter, 0xff, sizeof(mc_filter)); | |
1786 | rx_mode = CR_W_AB | CR_W_AM; | |
1787 | } else { | |
1788 | struct netdev_hw_addr *ha; | |
1789 | ||
1790 | memset(mc_filter, 0, sizeof(mc_filter)); | |
1791 | netdev_for_each_mc_addr(ha, dev) { | |
1792 | unsigned int bit; | |
1793 | bit = (ether_crc(ETH_ALEN, ha->addr) >> 26) ^ 0x3F; | |
1794 | mc_filter[bit >> 5] |= (1 << bit); | |
1795 | } | |
1796 | rx_mode = CR_W_AB | CR_W_AM; | |
1797 | } | |
1798 | ||
1799 | stop_nic_rxtx(ioaddr, np->crvalue); | |
1800 | ||
1801 | iowrite32(mc_filter[0], ioaddr + MAR0); | |
1802 | iowrite32(mc_filter[1], ioaddr + MAR1); | |
1803 | np->crvalue &= ~CR_W_RXMODEMASK; | |
1804 | np->crvalue |= rx_mode; | |
1805 | iowrite32(np->crvalue, ioaddr + TCRRCR); | |
1806 | } | |
1807 | ||
1808 | static void netdev_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) | |
1809 | { | |
1810 | struct netdev_private *np = netdev_priv(dev); | |
1811 | ||
1812 | strscpy(info->driver, DRV_NAME, sizeof(info->driver)); | |
1813 | strscpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info)); | |
1814 | } | |
1815 | ||
1816 | static int netdev_get_link_ksettings(struct net_device *dev, | |
1817 | struct ethtool_link_ksettings *cmd) | |
1818 | { | |
1819 | struct netdev_private *np = netdev_priv(dev); | |
1820 | ||
1821 | spin_lock_irq(&np->lock); | |
1822 | mii_ethtool_get_link_ksettings(&np->mii, cmd); | |
1823 | spin_unlock_irq(&np->lock); | |
1824 | ||
1825 | return 0; | |
1826 | } | |
1827 | ||
1828 | static int netdev_set_link_ksettings(struct net_device *dev, | |
1829 | const struct ethtool_link_ksettings *cmd) | |
1830 | { | |
1831 | struct netdev_private *np = netdev_priv(dev); | |
1832 | int rc; | |
1833 | ||
1834 | spin_lock_irq(&np->lock); | |
1835 | rc = mii_ethtool_set_link_ksettings(&np->mii, cmd); | |
1836 | spin_unlock_irq(&np->lock); | |
1837 | ||
1838 | return rc; | |
1839 | } | |
1840 | ||
1841 | static int netdev_nway_reset(struct net_device *dev) | |
1842 | { | |
1843 | struct netdev_private *np = netdev_priv(dev); | |
1844 | return mii_nway_restart(&np->mii); | |
1845 | } | |
1846 | ||
1847 | static u32 netdev_get_link(struct net_device *dev) | |
1848 | { | |
1849 | struct netdev_private *np = netdev_priv(dev); | |
1850 | return mii_link_ok(&np->mii); | |
1851 | } | |
1852 | ||
1853 | static u32 netdev_get_msglevel(struct net_device *dev) | |
1854 | { | |
1855 | return debug; | |
1856 | } | |
1857 | ||
1858 | static void netdev_set_msglevel(struct net_device *dev, u32 value) | |
1859 | { | |
1860 | debug = value; | |
1861 | } | |
1862 | ||
1863 | static const struct ethtool_ops netdev_ethtool_ops = { | |
1864 | .get_drvinfo = netdev_get_drvinfo, | |
1865 | .nway_reset = netdev_nway_reset, | |
1866 | .get_link = netdev_get_link, | |
1867 | .get_msglevel = netdev_get_msglevel, | |
1868 | .set_msglevel = netdev_set_msglevel, | |
1869 | .get_link_ksettings = netdev_get_link_ksettings, | |
1870 | .set_link_ksettings = netdev_set_link_ksettings, | |
1871 | }; | |
1872 | ||
1873 | static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1874 | { | |
1875 | struct netdev_private *np = netdev_priv(dev); | |
1876 | int rc; | |
1877 | ||
1878 | if (!netif_running(dev)) | |
1879 | return -EINVAL; | |
1880 | ||
1881 | spin_lock_irq(&np->lock); | |
1882 | rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL); | |
1883 | spin_unlock_irq(&np->lock); | |
1884 | ||
1885 | return rc; | |
1886 | } | |
1887 | ||
1888 | ||
1889 | static int netdev_close(struct net_device *dev) | |
1890 | { | |
1891 | struct netdev_private *np = netdev_priv(dev); | |
1892 | void __iomem *ioaddr = np->mem; | |
1893 | int i; | |
1894 | ||
1895 | netif_stop_queue(dev); | |
1896 | ||
1897 | /* Disable interrupts by clearing the interrupt mask. */ | |
1898 | iowrite32(0x0000, ioaddr + IMR); | |
1899 | ||
1900 | /* Stop the chip's Tx and Rx processes. */ | |
1901 | stop_nic_rxtx(ioaddr, 0); | |
1902 | ||
1903 | del_timer_sync(&np->timer); | |
1904 | del_timer_sync(&np->reset_timer); | |
1905 | ||
1906 | free_irq(np->pci_dev->irq, dev); | |
1907 | ||
1908 | /* Free all the skbuffs in the Rx queue. */ | |
1909 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1910 | struct sk_buff *skb = np->rx_ring[i].skbuff; | |
1911 | ||
1912 | np->rx_ring[i].status = 0; | |
1913 | if (skb) { | |
1914 | dma_unmap_single(&np->pci_dev->dev, | |
1915 | np->rx_ring[i].buffer, np->rx_buf_sz, | |
1916 | DMA_FROM_DEVICE); | |
1917 | dev_kfree_skb(skb); | |
1918 | np->rx_ring[i].skbuff = NULL; | |
1919 | } | |
1920 | } | |
1921 | ||
1922 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1923 | struct sk_buff *skb = np->tx_ring[i].skbuff; | |
1924 | ||
1925 | if (skb) { | |
1926 | dma_unmap_single(&np->pci_dev->dev, | |
1927 | np->tx_ring[i].buffer, skb->len, | |
1928 | DMA_TO_DEVICE); | |
1929 | dev_kfree_skb(skb); | |
1930 | np->tx_ring[i].skbuff = NULL; | |
1931 | } | |
1932 | } | |
1933 | ||
1934 | return 0; | |
1935 | } | |
1936 | ||
1937 | static const struct pci_device_id fealnx_pci_tbl[] = { | |
1938 | {0x1516, 0x0800, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1939 | {0x1516, 0x0803, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1}, | |
1940 | {0x1516, 0x0891, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2}, | |
1941 | {} /* terminate list */ | |
1942 | }; | |
1943 | MODULE_DEVICE_TABLE(pci, fealnx_pci_tbl); | |
1944 | ||
1945 | ||
1946 | static struct pci_driver fealnx_driver = { | |
1947 | .name = "fealnx", | |
1948 | .id_table = fealnx_pci_tbl, | |
1949 | .probe = fealnx_init_one, | |
1950 | .remove = fealnx_remove_one, | |
1951 | }; | |
1952 | ||
1953 | module_pci_driver(fealnx_driver); |