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1da177e4 LT |
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 | #define DRV_VERSION "2.51" | |
29 | #define DRV_RELDATE "Nov-17-2001" | |
30 | ||
31 | static int debug; /* 1-> print debug message */ | |
32 | static int max_interrupt_work = 20; | |
33 | ||
34 | /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). */ | |
35 | static int multicast_filter_limit = 32; | |
36 | ||
37 | /* Set the copy breakpoint for the copy-only-tiny-frames scheme. */ | |
38 | /* Setting to > 1518 effectively disables this feature. */ | |
39 | static int rx_copybreak; | |
40 | ||
41 | /* Used to pass the media type, etc. */ | |
42 | /* Both 'options[]' and 'full_duplex[]' should exist for driver */ | |
43 | /* interoperability. */ | |
44 | /* The media type is usually passed in 'options[]'. */ | |
45 | #define MAX_UNITS 8 /* More are supported, limit only on options */ | |
46 | static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 }; | |
47 | static int full_duplex[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 }; | |
48 | ||
49 | /* Operational parameters that are set at compile time. */ | |
50 | /* Keep the ring sizes a power of two for compile efficiency. */ | |
51 | /* The compiler will convert <unsigned>'%'<2^N> into a bit mask. */ | |
52 | /* Making the Tx ring too large decreases the effectiveness of channel */ | |
53 | /* bonding and packet priority. */ | |
54 | /* There are no ill effects from too-large receive rings. */ | |
55 | // 88-12-9 modify, | |
56 | // #define TX_RING_SIZE 16 | |
57 | // #define RX_RING_SIZE 32 | |
58 | #define TX_RING_SIZE 6 | |
59 | #define RX_RING_SIZE 12 | |
60 | #define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct fealnx_desc) | |
61 | #define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct fealnx_desc) | |
62 | ||
63 | /* Operational parameters that usually are not changed. */ | |
64 | /* Time in jiffies before concluding the transmitter is hung. */ | |
65 | #define TX_TIMEOUT (2*HZ) | |
66 | ||
67 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer. */ | |
68 | ||
69 | ||
70 | /* Include files, designed to support most kernel versions 2.0.0 and later. */ | |
71 | #include <linux/module.h> | |
72 | #include <linux/kernel.h> | |
73 | #include <linux/string.h> | |
74 | #include <linux/timer.h> | |
75 | #include <linux/errno.h> | |
76 | #include <linux/ioport.h> | |
77 | #include <linux/slab.h> | |
78 | #include <linux/interrupt.h> | |
79 | #include <linux/pci.h> | |
80 | #include <linux/netdevice.h> | |
81 | #include <linux/etherdevice.h> | |
82 | #include <linux/skbuff.h> | |
83 | #include <linux/init.h> | |
84 | #include <linux/mii.h> | |
85 | #include <linux/ethtool.h> | |
86 | #include <linux/crc32.h> | |
87 | #include <linux/delay.h> | |
88 | #include <linux/bitops.h> | |
89 | ||
90 | #include <asm/processor.h> /* Processor type for cache alignment. */ | |
91 | #include <asm/io.h> | |
92 | #include <asm/uaccess.h> | |
93 | ||
94 | /* These identify the driver base version and may not be removed. */ | |
95 | static char version[] __devinitdata = | |
96 | KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE "\n"; | |
97 | ||
98 | ||
99 | /* This driver was written to use PCI memory space, however some x86 systems | |
100 | work only with I/O space accesses. */ | |
101 | #ifndef __alpha__ | |
102 | #define USE_IO_OPS | |
103 | #endif | |
104 | ||
105 | /* Kernel compatibility defines, some common to David Hinds' PCMCIA package. */ | |
106 | /* This is only in the support-all-kernels source code. */ | |
107 | ||
108 | #define RUN_AT(x) (jiffies + (x)) | |
109 | ||
110 | MODULE_AUTHOR("Myson or whoever"); | |
111 | MODULE_DESCRIPTION("Myson MTD-8xx 100/10M Ethernet PCI Adapter Driver"); | |
112 | MODULE_LICENSE("GPL"); | |
113 | module_param(max_interrupt_work, int, 0); | |
114 | //MODULE_PARM(min_pci_latency, "i"); | |
115 | module_param(debug, int, 0); | |
116 | module_param(rx_copybreak, int, 0); | |
117 | module_param(multicast_filter_limit, int, 0); | |
118 | module_param_array(options, int, NULL, 0); | |
119 | module_param_array(full_duplex, int, NULL, 0); | |
120 | MODULE_PARM_DESC(max_interrupt_work, "fealnx maximum events handled per interrupt"); | |
121 | MODULE_PARM_DESC(debug, "fealnx enable debugging (0-1)"); | |
122 | MODULE_PARM_DESC(rx_copybreak, "fealnx copy breakpoint for copy-only-tiny-frames"); | |
123 | MODULE_PARM_DESC(multicast_filter_limit, "fealnx maximum number of filtered multicast addresses"); | |
124 | MODULE_PARM_DESC(options, "fealnx: Bits 0-3: media type, bit 17: full duplex"); | |
125 | MODULE_PARM_DESC(full_duplex, "fealnx full duplex setting(s) (1)"); | |
126 | ||
127 | #define MIN_REGION_SIZE 136 | |
128 | ||
129 | enum pci_flags_bit { | |
130 | PCI_USES_IO = 1, | |
131 | PCI_USES_MEM = 2, | |
132 | PCI_USES_MASTER = 4, | |
133 | PCI_ADDR0 = 0x10 << 0, | |
134 | PCI_ADDR1 = 0x10 << 1, | |
135 | PCI_ADDR2 = 0x10 << 2, | |
136 | PCI_ADDR3 = 0x10 << 3, | |
137 | }; | |
138 | ||
139 | /* A chip capabilities table, matching the entries in pci_tbl[] above. */ | |
140 | enum chip_capability_flags { | |
141 | HAS_MII_XCVR, | |
142 | HAS_CHIP_XCVR, | |
143 | }; | |
144 | ||
145 | /* 89/6/13 add, */ | |
146 | /* for different PHY */ | |
147 | enum phy_type_flags { | |
148 | MysonPHY = 1, | |
149 | AhdocPHY = 2, | |
150 | SeeqPHY = 3, | |
151 | MarvellPHY = 4, | |
152 | Myson981 = 5, | |
153 | LevelOnePHY = 6, | |
154 | OtherPHY = 10, | |
155 | }; | |
156 | ||
157 | struct chip_info { | |
158 | char *chip_name; | |
159 | int io_size; | |
160 | int flags; | |
161 | }; | |
162 | ||
163 | static struct chip_info skel_netdrv_tbl[] = { | |
164 | {"100/10M Ethernet PCI Adapter", 136, HAS_MII_XCVR}, | |
165 | {"100/10M Ethernet PCI Adapter", 136, HAS_CHIP_XCVR}, | |
166 | {"1000/100/10M Ethernet PCI Adapter", 136, HAS_MII_XCVR}, | |
167 | }; | |
168 | ||
169 | /* Offsets to the Command and Status Registers. */ | |
170 | enum fealnx_offsets { | |
171 | PAR0 = 0x0, /* physical address 0-3 */ | |
172 | PAR1 = 0x04, /* physical address 4-5 */ | |
173 | MAR0 = 0x08, /* multicast address 0-3 */ | |
174 | MAR1 = 0x0C, /* multicast address 4-7 */ | |
175 | FAR0 = 0x10, /* flow-control address 0-3 */ | |
176 | FAR1 = 0x14, /* flow-control address 4-5 */ | |
177 | TCRRCR = 0x18, /* receive & transmit configuration */ | |
178 | BCR = 0x1C, /* bus command */ | |
179 | TXPDR = 0x20, /* transmit polling demand */ | |
180 | RXPDR = 0x24, /* receive polling demand */ | |
181 | RXCWP = 0x28, /* receive current word pointer */ | |
182 | TXLBA = 0x2C, /* transmit list base address */ | |
183 | RXLBA = 0x30, /* receive list base address */ | |
184 | ISR = 0x34, /* interrupt status */ | |
185 | IMR = 0x38, /* interrupt mask */ | |
186 | FTH = 0x3C, /* flow control high/low threshold */ | |
187 | MANAGEMENT = 0x40, /* bootrom/eeprom and mii management */ | |
188 | TALLY = 0x44, /* tally counters for crc and mpa */ | |
189 | TSR = 0x48, /* tally counter for transmit status */ | |
190 | BMCRSR = 0x4c, /* basic mode control and status */ | |
191 | PHYIDENTIFIER = 0x50, /* phy identifier */ | |
192 | ANARANLPAR = 0x54, /* auto-negotiation advertisement and link | |
193 | partner ability */ | |
194 | ANEROCR = 0x58, /* auto-negotiation expansion and pci conf. */ | |
195 | BPREMRPSR = 0x5c, /* bypass & receive error mask and phy status */ | |
196 | }; | |
197 | ||
198 | /* Bits in the interrupt status/enable registers. */ | |
199 | /* The bits in the Intr Status/Enable registers, mostly interrupt sources. */ | |
200 | enum intr_status_bits { | |
201 | RFCON = 0x00020000, /* receive flow control xon packet */ | |
202 | RFCOFF = 0x00010000, /* receive flow control xoff packet */ | |
203 | LSCStatus = 0x00008000, /* link status change */ | |
204 | ANCStatus = 0x00004000, /* autonegotiation completed */ | |
205 | FBE = 0x00002000, /* fatal bus error */ | |
206 | FBEMask = 0x00001800, /* mask bit12-11 */ | |
207 | ParityErr = 0x00000000, /* parity error */ | |
208 | TargetErr = 0x00001000, /* target abort */ | |
209 | MasterErr = 0x00000800, /* master error */ | |
210 | TUNF = 0x00000400, /* transmit underflow */ | |
211 | ROVF = 0x00000200, /* receive overflow */ | |
212 | ETI = 0x00000100, /* transmit early int */ | |
213 | ERI = 0x00000080, /* receive early int */ | |
214 | CNTOVF = 0x00000040, /* counter overflow */ | |
215 | RBU = 0x00000020, /* receive buffer unavailable */ | |
216 | TBU = 0x00000010, /* transmit buffer unavilable */ | |
217 | TI = 0x00000008, /* transmit interrupt */ | |
218 | RI = 0x00000004, /* receive interrupt */ | |
219 | RxErr = 0x00000002, /* receive error */ | |
220 | }; | |
221 | ||
222 | /* Bits in the NetworkConfig register, W for writing, R for reading */ | |
223 | /* FIXME: some names are invented by me. Marked with (name?) */ | |
224 | /* If you have docs and know bit names, please fix 'em */ | |
225 | enum rx_mode_bits { | |
226 | CR_W_ENH = 0x02000000, /* enhanced mode (name?) */ | |
227 | CR_W_FD = 0x00100000, /* full duplex */ | |
228 | CR_W_PS10 = 0x00080000, /* 10 mbit */ | |
229 | CR_W_TXEN = 0x00040000, /* tx enable (name?) */ | |
230 | CR_W_PS1000 = 0x00010000, /* 1000 mbit */ | |
231 | /* CR_W_RXBURSTMASK= 0x00000e00, Im unsure about this */ | |
232 | CR_W_RXMODEMASK = 0x000000e0, | |
233 | CR_W_PROM = 0x00000080, /* promiscuous mode */ | |
234 | CR_W_AB = 0x00000040, /* accept broadcast */ | |
235 | CR_W_AM = 0x00000020, /* accept mutlicast */ | |
236 | CR_W_ARP = 0x00000008, /* receive runt pkt */ | |
237 | CR_W_ALP = 0x00000004, /* receive long pkt */ | |
238 | CR_W_SEP = 0x00000002, /* receive error pkt */ | |
239 | CR_W_RXEN = 0x00000001, /* rx enable (unicast?) (name?) */ | |
240 | ||
241 | CR_R_TXSTOP = 0x04000000, /* tx stopped (name?) */ | |
242 | CR_R_FD = 0x00100000, /* full duplex detected */ | |
243 | CR_R_PS10 = 0x00080000, /* 10 mbit detected */ | |
244 | CR_R_RXSTOP = 0x00008000, /* rx stopped (name?) */ | |
245 | }; | |
246 | ||
247 | /* The Tulip Rx and Tx buffer descriptors. */ | |
248 | struct fealnx_desc { | |
249 | s32 status; | |
250 | s32 control; | |
251 | u32 buffer; | |
252 | u32 next_desc; | |
253 | struct fealnx_desc *next_desc_logical; | |
254 | struct sk_buff *skbuff; | |
255 | u32 reserved1; | |
256 | u32 reserved2; | |
257 | }; | |
258 | ||
259 | /* Bits in network_desc.status */ | |
260 | enum rx_desc_status_bits { | |
261 | RXOWN = 0x80000000, /* own bit */ | |
262 | FLNGMASK = 0x0fff0000, /* frame length */ | |
263 | FLNGShift = 16, | |
264 | MARSTATUS = 0x00004000, /* multicast address received */ | |
265 | BARSTATUS = 0x00002000, /* broadcast address received */ | |
266 | PHYSTATUS = 0x00001000, /* physical address received */ | |
267 | RXFSD = 0x00000800, /* first descriptor */ | |
268 | RXLSD = 0x00000400, /* last descriptor */ | |
269 | ErrorSummary = 0x80, /* error summary */ | |
270 | RUNT = 0x40, /* runt packet received */ | |
271 | LONG = 0x20, /* long packet received */ | |
272 | FAE = 0x10, /* frame align error */ | |
273 | CRC = 0x08, /* crc error */ | |
274 | RXER = 0x04, /* receive error */ | |
275 | }; | |
276 | ||
277 | enum rx_desc_control_bits { | |
278 | RXIC = 0x00800000, /* interrupt control */ | |
279 | RBSShift = 0, | |
280 | }; | |
281 | ||
282 | enum tx_desc_status_bits { | |
283 | TXOWN = 0x80000000, /* own bit */ | |
284 | JABTO = 0x00004000, /* jabber timeout */ | |
285 | CSL = 0x00002000, /* carrier sense lost */ | |
286 | LC = 0x00001000, /* late collision */ | |
287 | EC = 0x00000800, /* excessive collision */ | |
288 | UDF = 0x00000400, /* fifo underflow */ | |
289 | DFR = 0x00000200, /* deferred */ | |
290 | HF = 0x00000100, /* heartbeat fail */ | |
291 | NCRMask = 0x000000ff, /* collision retry count */ | |
292 | NCRShift = 0, | |
293 | }; | |
294 | ||
295 | enum tx_desc_control_bits { | |
296 | TXIC = 0x80000000, /* interrupt control */ | |
297 | ETIControl = 0x40000000, /* early transmit interrupt */ | |
298 | TXLD = 0x20000000, /* last descriptor */ | |
299 | TXFD = 0x10000000, /* first descriptor */ | |
300 | CRCEnable = 0x08000000, /* crc control */ | |
301 | PADEnable = 0x04000000, /* padding control */ | |
302 | RetryTxLC = 0x02000000, /* retry late collision */ | |
303 | PKTSMask = 0x3ff800, /* packet size bit21-11 */ | |
304 | PKTSShift = 11, | |
305 | TBSMask = 0x000007ff, /* transmit buffer bit 10-0 */ | |
306 | TBSShift = 0, | |
307 | }; | |
308 | ||
309 | /* BootROM/EEPROM/MII Management Register */ | |
310 | #define MASK_MIIR_MII_READ 0x00000000 | |
311 | #define MASK_MIIR_MII_WRITE 0x00000008 | |
312 | #define MASK_MIIR_MII_MDO 0x00000004 | |
313 | #define MASK_MIIR_MII_MDI 0x00000002 | |
314 | #define MASK_MIIR_MII_MDC 0x00000001 | |
315 | ||
316 | /* ST+OP+PHYAD+REGAD+TA */ | |
317 | #define OP_READ 0x6000 /* ST:01+OP:10+PHYAD+REGAD+TA:Z0 */ | |
318 | #define OP_WRITE 0x5002 /* ST:01+OP:01+PHYAD+REGAD+TA:10 */ | |
319 | ||
320 | /* ------------------------------------------------------------------------- */ | |
321 | /* Constants for Myson PHY */ | |
322 | /* ------------------------------------------------------------------------- */ | |
323 | #define MysonPHYID 0xd0000302 | |
324 | /* 89-7-27 add, (begin) */ | |
325 | #define MysonPHYID0 0x0302 | |
326 | #define StatusRegister 18 | |
327 | #define SPEED100 0x0400 // bit10 | |
328 | #define FULLMODE 0x0800 // bit11 | |
329 | /* 89-7-27 add, (end) */ | |
330 | ||
331 | /* ------------------------------------------------------------------------- */ | |
332 | /* Constants for Seeq 80225 PHY */ | |
333 | /* ------------------------------------------------------------------------- */ | |
334 | #define SeeqPHYID0 0x0016 | |
335 | ||
336 | #define MIIRegister18 18 | |
337 | #define SPD_DET_100 0x80 | |
338 | #define DPLX_DET_FULL 0x40 | |
339 | ||
340 | /* ------------------------------------------------------------------------- */ | |
341 | /* Constants for Ahdoc 101 PHY */ | |
342 | /* ------------------------------------------------------------------------- */ | |
343 | #define AhdocPHYID0 0x0022 | |
344 | ||
345 | #define DiagnosticReg 18 | |
346 | #define DPLX_FULL 0x0800 | |
347 | #define Speed_100 0x0400 | |
348 | ||
349 | /* 89/6/13 add, */ | |
350 | /* -------------------------------------------------------------------------- */ | |
351 | /* Constants */ | |
352 | /* -------------------------------------------------------------------------- */ | |
353 | #define MarvellPHYID0 0x0141 | |
354 | #define LevelOnePHYID0 0x0013 | |
355 | ||
356 | #define MII1000BaseTControlReg 9 | |
357 | #define MII1000BaseTStatusReg 10 | |
358 | #define SpecificReg 17 | |
359 | ||
360 | /* for 1000BaseT Control Register */ | |
361 | #define PHYAbletoPerform1000FullDuplex 0x0200 | |
362 | #define PHYAbletoPerform1000HalfDuplex 0x0100 | |
363 | #define PHY1000AbilityMask 0x300 | |
364 | ||
365 | // for phy specific status register, marvell phy. | |
366 | #define SpeedMask 0x0c000 | |
367 | #define Speed_1000M 0x08000 | |
368 | #define Speed_100M 0x4000 | |
369 | #define Speed_10M 0 | |
370 | #define Full_Duplex 0x2000 | |
371 | ||
372 | // 89/12/29 add, for phy specific status register, levelone phy, (begin) | |
373 | #define LXT1000_100M 0x08000 | |
374 | #define LXT1000_1000M 0x0c000 | |
375 | #define LXT1000_Full 0x200 | |
376 | // 89/12/29 add, for phy specific status register, levelone phy, (end) | |
377 | ||
378 | /* for 3-in-1 case, BMCRSR register */ | |
379 | #define LinkIsUp2 0x00040000 | |
380 | ||
381 | /* for PHY */ | |
382 | #define LinkIsUp 0x0004 | |
383 | ||
384 | ||
385 | struct netdev_private { | |
386 | /* Descriptor rings first for alignment. */ | |
387 | struct fealnx_desc *rx_ring; | |
388 | struct fealnx_desc *tx_ring; | |
389 | ||
390 | dma_addr_t rx_ring_dma; | |
391 | dma_addr_t tx_ring_dma; | |
392 | ||
393 | spinlock_t lock; | |
394 | ||
395 | struct net_device_stats stats; | |
396 | ||
397 | /* Media monitoring timer. */ | |
398 | struct timer_list timer; | |
399 | ||
400 | /* Reset timer */ | |
401 | struct timer_list reset_timer; | |
402 | int reset_timer_armed; | |
403 | unsigned long crvalue_sv; | |
404 | unsigned long imrvalue_sv; | |
405 | ||
406 | /* Frequently used values: keep some adjacent for cache effect. */ | |
407 | int flags; | |
408 | struct pci_dev *pci_dev; | |
409 | unsigned long crvalue; | |
410 | unsigned long bcrvalue; | |
411 | unsigned long imrvalue; | |
412 | struct fealnx_desc *cur_rx; | |
413 | struct fealnx_desc *lack_rxbuf; | |
414 | int really_rx_count; | |
415 | struct fealnx_desc *cur_tx; | |
416 | struct fealnx_desc *cur_tx_copy; | |
417 | int really_tx_count; | |
418 | int free_tx_count; | |
419 | unsigned int rx_buf_sz; /* Based on MTU+slack. */ | |
420 | ||
421 | /* These values are keep track of the transceiver/media in use. */ | |
422 | unsigned int linkok; | |
423 | unsigned int line_speed; | |
424 | unsigned int duplexmode; | |
425 | unsigned int default_port:4; /* Last dev->if_port value. */ | |
426 | unsigned int PHYType; | |
427 | ||
428 | /* MII transceiver section. */ | |
429 | int mii_cnt; /* MII device addresses. */ | |
430 | unsigned char phys[2]; /* MII device addresses. */ | |
431 | struct mii_if_info mii; | |
432 | void __iomem *mem; | |
433 | }; | |
434 | ||
435 | ||
436 | static int mdio_read(struct net_device *dev, int phy_id, int location); | |
437 | static void mdio_write(struct net_device *dev, int phy_id, int location, int value); | |
438 | static int netdev_open(struct net_device *dev); | |
439 | static void getlinktype(struct net_device *dev); | |
440 | static void getlinkstatus(struct net_device *dev); | |
441 | static void netdev_timer(unsigned long data); | |
442 | static void reset_timer(unsigned long data); | |
443 | static void tx_timeout(struct net_device *dev); | |
444 | static void init_ring(struct net_device *dev); | |
445 | static int start_tx(struct sk_buff *skb, struct net_device *dev); | |
446 | static irqreturn_t intr_handler(int irq, void *dev_instance, struct pt_regs *regs); | |
447 | static int netdev_rx(struct net_device *dev); | |
448 | static void set_rx_mode(struct net_device *dev); | |
449 | static void __set_rx_mode(struct net_device *dev); | |
450 | static struct net_device_stats *get_stats(struct net_device *dev); | |
451 | static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
452 | static struct ethtool_ops netdev_ethtool_ops; | |
453 | static int netdev_close(struct net_device *dev); | |
454 | static void reset_rx_descriptors(struct net_device *dev); | |
455 | static void reset_tx_descriptors(struct net_device *dev); | |
456 | ||
457 | static void stop_nic_rx(void __iomem *ioaddr, long crvalue) | |
458 | { | |
459 | int delay = 0x1000; | |
460 | iowrite32(crvalue & ~(CR_W_RXEN), ioaddr + TCRRCR); | |
461 | while (--delay) { | |
462 | if ( (ioread32(ioaddr + TCRRCR) & CR_R_RXSTOP) == CR_R_RXSTOP) | |
463 | break; | |
464 | } | |
465 | } | |
466 | ||
467 | ||
468 | static void stop_nic_rxtx(void __iomem *ioaddr, long crvalue) | |
469 | { | |
470 | int delay = 0x1000; | |
471 | iowrite32(crvalue & ~(CR_W_RXEN+CR_W_TXEN), ioaddr + TCRRCR); | |
472 | while (--delay) { | |
473 | if ( (ioread32(ioaddr + TCRRCR) & (CR_R_RXSTOP+CR_R_TXSTOP)) | |
474 | == (CR_R_RXSTOP+CR_R_TXSTOP) ) | |
475 | break; | |
476 | } | |
477 | } | |
478 | ||
479 | ||
480 | static int __devinit fealnx_init_one(struct pci_dev *pdev, | |
481 | const struct pci_device_id *ent) | |
482 | { | |
483 | struct netdev_private *np; | |
484 | int i, option, err, irq; | |
485 | static int card_idx = -1; | |
486 | char boardname[12]; | |
487 | void __iomem *ioaddr; | |
488 | unsigned long len; | |
489 | unsigned int chip_id = ent->driver_data; | |
490 | struct net_device *dev; | |
491 | void *ring_space; | |
492 | dma_addr_t ring_dma; | |
493 | #ifdef USE_IO_OPS | |
494 | int bar = 0; | |
495 | #else | |
496 | int bar = 1; | |
497 | #endif | |
498 | ||
499 | /* when built into the kernel, we only print version if device is found */ | |
500 | #ifndef MODULE | |
501 | static int printed_version; | |
502 | if (!printed_version++) | |
503 | printk(version); | |
504 | #endif | |
505 | ||
506 | card_idx++; | |
507 | sprintf(boardname, "fealnx%d", card_idx); | |
508 | ||
509 | option = card_idx < MAX_UNITS ? options[card_idx] : 0; | |
510 | ||
511 | i = pci_enable_device(pdev); | |
512 | if (i) return i; | |
513 | pci_set_master(pdev); | |
514 | ||
515 | len = pci_resource_len(pdev, bar); | |
516 | if (len < MIN_REGION_SIZE) { | |
517 | printk(KERN_ERR "%s: region size %ld too small, aborting\n", | |
518 | boardname, len); | |
519 | return -ENODEV; | |
520 | } | |
521 | ||
522 | i = pci_request_regions(pdev, boardname); | |
523 | if (i) return i; | |
524 | ||
525 | irq = pdev->irq; | |
526 | ||
527 | ioaddr = pci_iomap(pdev, bar, len); | |
528 | if (!ioaddr) { | |
529 | err = -ENOMEM; | |
530 | goto err_out_res; | |
531 | } | |
532 | ||
533 | dev = alloc_etherdev(sizeof(struct netdev_private)); | |
534 | if (!dev) { | |
535 | err = -ENOMEM; | |
536 | goto err_out_unmap; | |
537 | } | |
538 | SET_MODULE_OWNER(dev); | |
539 | SET_NETDEV_DEV(dev, &pdev->dev); | |
540 | ||
541 | /* read ethernet id */ | |
542 | for (i = 0; i < 6; ++i) | |
543 | dev->dev_addr[i] = ioread8(ioaddr + PAR0 + i); | |
544 | ||
545 | /* Reset the chip to erase previous misconfiguration. */ | |
546 | iowrite32(0x00000001, ioaddr + BCR); | |
547 | ||
548 | dev->base_addr = (unsigned long)ioaddr; | |
549 | dev->irq = irq; | |
550 | ||
551 | /* Make certain the descriptor lists are aligned. */ | |
552 | np = netdev_priv(dev); | |
553 | np->mem = ioaddr; | |
554 | spin_lock_init(&np->lock); | |
555 | np->pci_dev = pdev; | |
556 | np->flags = skel_netdrv_tbl[chip_id].flags; | |
557 | pci_set_drvdata(pdev, dev); | |
558 | np->mii.dev = dev; | |
559 | np->mii.mdio_read = mdio_read; | |
560 | np->mii.mdio_write = mdio_write; | |
561 | np->mii.phy_id_mask = 0x1f; | |
562 | np->mii.reg_num_mask = 0x1f; | |
563 | ||
564 | ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma); | |
565 | if (!ring_space) { | |
566 | err = -ENOMEM; | |
567 | goto err_out_free_dev; | |
568 | } | |
569 | np->rx_ring = (struct fealnx_desc *)ring_space; | |
570 | np->rx_ring_dma = ring_dma; | |
571 | ||
572 | ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma); | |
573 | if (!ring_space) { | |
574 | err = -ENOMEM; | |
575 | goto err_out_free_rx; | |
576 | } | |
577 | np->tx_ring = (struct fealnx_desc *)ring_space; | |
578 | np->tx_ring_dma = ring_dma; | |
579 | ||
580 | /* find the connected MII xcvrs */ | |
581 | if (np->flags == HAS_MII_XCVR) { | |
582 | int phy, phy_idx = 0; | |
583 | ||
584 | for (phy = 1; phy < 32 && phy_idx < 4; phy++) { | |
585 | int mii_status = mdio_read(dev, phy, 1); | |
586 | ||
587 | if (mii_status != 0xffff && mii_status != 0x0000) { | |
588 | np->phys[phy_idx++] = phy; | |
589 | printk(KERN_INFO | |
590 | "%s: MII PHY found at address %d, status " | |
591 | "0x%4.4x.\n", dev->name, phy, mii_status); | |
592 | /* get phy type */ | |
593 | { | |
594 | unsigned int data; | |
595 | ||
596 | data = mdio_read(dev, np->phys[0], 2); | |
597 | if (data == SeeqPHYID0) | |
598 | np->PHYType = SeeqPHY; | |
599 | else if (data == AhdocPHYID0) | |
600 | np->PHYType = AhdocPHY; | |
601 | else if (data == MarvellPHYID0) | |
602 | np->PHYType = MarvellPHY; | |
603 | else if (data == MysonPHYID0) | |
604 | np->PHYType = Myson981; | |
605 | else if (data == LevelOnePHYID0) | |
606 | np->PHYType = LevelOnePHY; | |
607 | else | |
608 | np->PHYType = OtherPHY; | |
609 | } | |
610 | } | |
611 | } | |
612 | ||
613 | np->mii_cnt = phy_idx; | |
614 | if (phy_idx == 0) { | |
615 | printk(KERN_WARNING "%s: MII PHY not found -- this device may " | |
616 | "not operate correctly.\n", dev->name); | |
617 | } | |
618 | } else { | |
619 | np->phys[0] = 32; | |
620 | /* 89/6/23 add, (begin) */ | |
621 | /* get phy type */ | |
622 | if (ioread32(ioaddr + PHYIDENTIFIER) == MysonPHYID) | |
623 | np->PHYType = MysonPHY; | |
624 | else | |
625 | np->PHYType = OtherPHY; | |
626 | } | |
627 | np->mii.phy_id = np->phys[0]; | |
628 | ||
629 | if (dev->mem_start) | |
630 | option = dev->mem_start; | |
631 | ||
632 | /* The lower four bits are the media type. */ | |
633 | if (option > 0) { | |
634 | if (option & 0x200) | |
635 | np->mii.full_duplex = 1; | |
636 | np->default_port = option & 15; | |
637 | } | |
638 | ||
639 | if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0) | |
640 | np->mii.full_duplex = full_duplex[card_idx]; | |
641 | ||
642 | if (np->mii.full_duplex) { | |
643 | printk(KERN_INFO "%s: Media type forced to Full Duplex.\n", dev->name); | |
644 | /* 89/6/13 add, (begin) */ | |
645 | // if (np->PHYType==MarvellPHY) | |
646 | if ((np->PHYType == MarvellPHY) || (np->PHYType == LevelOnePHY)) { | |
647 | unsigned int data; | |
648 | ||
649 | data = mdio_read(dev, np->phys[0], 9); | |
650 | data = (data & 0xfcff) | 0x0200; | |
651 | mdio_write(dev, np->phys[0], 9, data); | |
652 | } | |
653 | /* 89/6/13 add, (end) */ | |
654 | if (np->flags == HAS_MII_XCVR) | |
655 | mdio_write(dev, np->phys[0], MII_ADVERTISE, ADVERTISE_FULL); | |
656 | else | |
657 | iowrite32(ADVERTISE_FULL, ioaddr + ANARANLPAR); | |
658 | np->mii.force_media = 1; | |
659 | } | |
660 | ||
661 | /* The chip-specific entries in the device structure. */ | |
662 | dev->open = &netdev_open; | |
663 | dev->hard_start_xmit = &start_tx; | |
664 | dev->stop = &netdev_close; | |
665 | dev->get_stats = &get_stats; | |
666 | dev->set_multicast_list = &set_rx_mode; | |
667 | dev->do_ioctl = &mii_ioctl; | |
668 | dev->ethtool_ops = &netdev_ethtool_ops; | |
669 | dev->tx_timeout = &tx_timeout; | |
670 | dev->watchdog_timeo = TX_TIMEOUT; | |
671 | ||
672 | err = register_netdev(dev); | |
673 | if (err) | |
674 | goto err_out_free_tx; | |
675 | ||
676 | printk(KERN_INFO "%s: %s at %p, ", | |
677 | dev->name, skel_netdrv_tbl[chip_id].chip_name, ioaddr); | |
678 | for (i = 0; i < 5; i++) | |
679 | printk("%2.2x:", dev->dev_addr[i]); | |
680 | printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq); | |
681 | ||
682 | return 0; | |
683 | ||
684 | err_out_free_tx: | |
685 | pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma); | |
686 | err_out_free_rx: | |
687 | pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma); | |
688 | err_out_free_dev: | |
689 | free_netdev(dev); | |
690 | err_out_unmap: | |
691 | pci_iounmap(pdev, ioaddr); | |
692 | err_out_res: | |
693 | pci_release_regions(pdev); | |
694 | return err; | |
695 | } | |
696 | ||
697 | ||
698 | static void __devexit fealnx_remove_one(struct pci_dev *pdev) | |
699 | { | |
700 | struct net_device *dev = pci_get_drvdata(pdev); | |
701 | ||
702 | if (dev) { | |
703 | struct netdev_private *np = netdev_priv(dev); | |
704 | ||
705 | pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, | |
706 | np->tx_ring_dma); | |
707 | pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, | |
708 | np->rx_ring_dma); | |
709 | unregister_netdev(dev); | |
710 | pci_iounmap(pdev, np->mem); | |
711 | free_netdev(dev); | |
712 | pci_release_regions(pdev); | |
713 | pci_set_drvdata(pdev, NULL); | |
714 | } else | |
715 | printk(KERN_ERR "fealnx: remove for unknown device\n"); | |
716 | } | |
717 | ||
718 | ||
719 | static ulong m80x_send_cmd_to_phy(void __iomem *miiport, int opcode, int phyad, int regad) | |
720 | { | |
721 | ulong miir; | |
722 | int i; | |
723 | unsigned int mask, data; | |
724 | ||
725 | /* enable MII output */ | |
726 | miir = (ulong) ioread32(miiport); | |
727 | miir &= 0xfffffff0; | |
728 | ||
729 | miir |= MASK_MIIR_MII_WRITE + MASK_MIIR_MII_MDO; | |
730 | ||
731 | /* send 32 1's preamble */ | |
732 | for (i = 0; i < 32; i++) { | |
733 | /* low MDC; MDO is already high (miir) */ | |
734 | miir &= ~MASK_MIIR_MII_MDC; | |
735 | iowrite32(miir, miiport); | |
736 | ||
737 | /* high MDC */ | |
738 | miir |= MASK_MIIR_MII_MDC; | |
739 | iowrite32(miir, miiport); | |
740 | } | |
741 | ||
742 | /* calculate ST+OP+PHYAD+REGAD+TA */ | |
743 | data = opcode | (phyad << 7) | (regad << 2); | |
744 | ||
745 | /* sent out */ | |
746 | mask = 0x8000; | |
747 | while (mask) { | |
748 | /* low MDC, prepare MDO */ | |
749 | miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO); | |
750 | if (mask & data) | |
751 | miir |= MASK_MIIR_MII_MDO; | |
752 | ||
753 | iowrite32(miir, miiport); | |
754 | /* high MDC */ | |
755 | miir |= MASK_MIIR_MII_MDC; | |
756 | iowrite32(miir, miiport); | |
757 | udelay(30); | |
758 | ||
759 | /* next */ | |
760 | mask >>= 1; | |
761 | if (mask == 0x2 && opcode == OP_READ) | |
762 | miir &= ~MASK_MIIR_MII_WRITE; | |
763 | } | |
764 | return miir; | |
765 | } | |
766 | ||
767 | ||
768 | static int mdio_read(struct net_device *dev, int phyad, int regad) | |
769 | { | |
770 | struct netdev_private *np = netdev_priv(dev); | |
771 | void __iomem *miiport = np->mem + MANAGEMENT; | |
772 | ulong miir; | |
773 | unsigned int mask, data; | |
774 | ||
775 | miir = m80x_send_cmd_to_phy(miiport, OP_READ, phyad, regad); | |
776 | ||
777 | /* read data */ | |
778 | mask = 0x8000; | |
779 | data = 0; | |
780 | while (mask) { | |
781 | /* low MDC */ | |
782 | miir &= ~MASK_MIIR_MII_MDC; | |
783 | iowrite32(miir, miiport); | |
784 | ||
785 | /* read MDI */ | |
786 | miir = ioread32(miiport); | |
787 | if (miir & MASK_MIIR_MII_MDI) | |
788 | data |= mask; | |
789 | ||
790 | /* high MDC, and wait */ | |
791 | miir |= MASK_MIIR_MII_MDC; | |
792 | iowrite32(miir, miiport); | |
793 | udelay(30); | |
794 | ||
795 | /* next */ | |
796 | mask >>= 1; | |
797 | } | |
798 | ||
799 | /* low MDC */ | |
800 | miir &= ~MASK_MIIR_MII_MDC; | |
801 | iowrite32(miir, miiport); | |
802 | ||
803 | return data & 0xffff; | |
804 | } | |
805 | ||
806 | ||
807 | static void mdio_write(struct net_device *dev, int phyad, int regad, int data) | |
808 | { | |
809 | struct netdev_private *np = netdev_priv(dev); | |
810 | void __iomem *miiport = np->mem + MANAGEMENT; | |
811 | ulong miir; | |
812 | unsigned int mask; | |
813 | ||
814 | miir = m80x_send_cmd_to_phy(miiport, OP_WRITE, phyad, regad); | |
815 | ||
816 | /* write data */ | |
817 | mask = 0x8000; | |
818 | while (mask) { | |
819 | /* low MDC, prepare MDO */ | |
820 | miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO); | |
821 | if (mask & data) | |
822 | miir |= MASK_MIIR_MII_MDO; | |
823 | iowrite32(miir, miiport); | |
824 | ||
825 | /* high MDC */ | |
826 | miir |= MASK_MIIR_MII_MDC; | |
827 | iowrite32(miir, miiport); | |
828 | ||
829 | /* next */ | |
830 | mask >>= 1; | |
831 | } | |
832 | ||
833 | /* low MDC */ | |
834 | miir &= ~MASK_MIIR_MII_MDC; | |
835 | iowrite32(miir, miiport); | |
836 | } | |
837 | ||
838 | ||
839 | static int netdev_open(struct net_device *dev) | |
840 | { | |
841 | struct netdev_private *np = netdev_priv(dev); | |
842 | void __iomem *ioaddr = np->mem; | |
843 | int i; | |
844 | ||
845 | iowrite32(0x00000001, ioaddr + BCR); /* Reset */ | |
846 | ||
847 | if (request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev)) | |
848 | return -EAGAIN; | |
849 | ||
850 | for (i = 0; i < 3; i++) | |
851 | iowrite16(((unsigned short*)dev->dev_addr)[i], | |
852 | ioaddr + PAR0 + i*2); | |
853 | ||
854 | init_ring(dev); | |
855 | ||
856 | iowrite32(np->rx_ring_dma, ioaddr + RXLBA); | |
857 | iowrite32(np->tx_ring_dma, ioaddr + TXLBA); | |
858 | ||
859 | /* Initialize other registers. */ | |
860 | /* Configure the PCI bus bursts and FIFO thresholds. | |
861 | 486: Set 8 longword burst. | |
862 | 586: no burst limit. | |
863 | Burst length 5:3 | |
864 | 0 0 0 1 | |
865 | 0 0 1 4 | |
866 | 0 1 0 8 | |
867 | 0 1 1 16 | |
868 | 1 0 0 32 | |
869 | 1 0 1 64 | |
870 | 1 1 0 128 | |
871 | 1 1 1 256 | |
872 | Wait the specified 50 PCI cycles after a reset by initializing | |
873 | Tx and Rx queues and the address filter list. | |
874 | FIXME (Ueimor): optimistic for alpha + posted writes ? */ | |
875 | #if defined(__powerpc__) || defined(__sparc__) | |
876 | // 89/9/1 modify, | |
877 | // np->bcrvalue=0x04 | 0x0x38; /* big-endian, 256 burst length */ | |
878 | np->bcrvalue = 0x04 | 0x10; /* big-endian, tx 8 burst length */ | |
879 | np->crvalue = 0xe00; /* rx 128 burst length */ | |
880 | #elif defined(__alpha__) || defined(__x86_64__) | |
881 | // 89/9/1 modify, | |
882 | // np->bcrvalue=0x38; /* little-endian, 256 burst length */ | |
883 | np->bcrvalue = 0x10; /* little-endian, 8 burst length */ | |
884 | np->crvalue = 0xe00; /* rx 128 burst length */ | |
885 | #elif defined(__i386__) | |
886 | #if defined(MODULE) | |
887 | // 89/9/1 modify, | |
888 | // np->bcrvalue=0x38; /* little-endian, 256 burst length */ | |
889 | np->bcrvalue = 0x10; /* little-endian, 8 burst length */ | |
890 | np->crvalue = 0xe00; /* rx 128 burst length */ | |
891 | #else | |
892 | /* When not a module we can work around broken '486 PCI boards. */ | |
893 | #define x86 boot_cpu_data.x86 | |
894 | // 89/9/1 modify, | |
895 | // np->bcrvalue=(x86 <= 4 ? 0x10 : 0x38); | |
896 | np->bcrvalue = 0x10; | |
897 | np->crvalue = (x86 <= 4 ? 0xa00 : 0xe00); | |
898 | if (x86 <= 4) | |
899 | printk(KERN_INFO "%s: This is a 386/486 PCI system, setting burst " | |
900 | "length to %x.\n", dev->name, (x86 <= 4 ? 0x10 : 0x38)); | |
901 | #endif | |
902 | #else | |
903 | // 89/9/1 modify, | |
904 | // np->bcrvalue=0x38; | |
905 | np->bcrvalue = 0x10; | |
906 | np->crvalue = 0xe00; /* rx 128 burst length */ | |
907 | #warning Processor architecture undefined! | |
908 | #endif | |
909 | // 89/12/29 add, | |
910 | // 90/1/16 modify, | |
911 | // np->imrvalue=FBE|TUNF|CNTOVF|RBU|TI|RI; | |
912 | np->imrvalue = TUNF | CNTOVF | RBU | TI | RI; | |
913 | if (np->pci_dev->device == 0x891) { | |
914 | np->bcrvalue |= 0x200; /* set PROG bit */ | |
915 | np->crvalue |= CR_W_ENH; /* set enhanced bit */ | |
916 | np->imrvalue |= ETI; | |
917 | } | |
918 | iowrite32(np->bcrvalue, ioaddr + BCR); | |
919 | ||
920 | if (dev->if_port == 0) | |
921 | dev->if_port = np->default_port; | |
922 | ||
923 | iowrite32(0, ioaddr + RXPDR); | |
924 | // 89/9/1 modify, | |
925 | // np->crvalue = 0x00e40001; /* tx store and forward, tx/rx enable */ | |
926 | np->crvalue |= 0x00e40001; /* tx store and forward, tx/rx enable */ | |
927 | np->mii.full_duplex = np->mii.force_media; | |
928 | getlinkstatus(dev); | |
929 | if (np->linkok) | |
930 | getlinktype(dev); | |
931 | __set_rx_mode(dev); | |
932 | ||
933 | netif_start_queue(dev); | |
934 | ||
935 | /* Clear and Enable interrupts by setting the interrupt mask. */ | |
936 | iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR); | |
937 | iowrite32(np->imrvalue, ioaddr + IMR); | |
938 | ||
939 | if (debug) | |
940 | printk(KERN_DEBUG "%s: Done netdev_open().\n", dev->name); | |
941 | ||
942 | /* Set the timer to check for link beat. */ | |
943 | init_timer(&np->timer); | |
944 | np->timer.expires = RUN_AT(3 * HZ); | |
945 | np->timer.data = (unsigned long) dev; | |
946 | np->timer.function = &netdev_timer; | |
947 | ||
948 | /* timer handler */ | |
949 | add_timer(&np->timer); | |
950 | ||
951 | init_timer(&np->reset_timer); | |
952 | np->reset_timer.data = (unsigned long) dev; | |
953 | np->reset_timer.function = &reset_timer; | |
954 | np->reset_timer_armed = 0; | |
955 | ||
956 | return 0; | |
957 | } | |
958 | ||
959 | ||
960 | static void getlinkstatus(struct net_device *dev) | |
961 | /* function: Routine will read MII Status Register to get link status. */ | |
962 | /* input : dev... pointer to the adapter block. */ | |
963 | /* output : none. */ | |
964 | { | |
965 | struct netdev_private *np = netdev_priv(dev); | |
966 | unsigned int i, DelayTime = 0x1000; | |
967 | ||
968 | np->linkok = 0; | |
969 | ||
970 | if (np->PHYType == MysonPHY) { | |
971 | for (i = 0; i < DelayTime; ++i) { | |
972 | if (ioread32(np->mem + BMCRSR) & LinkIsUp2) { | |
973 | np->linkok = 1; | |
974 | return; | |
975 | } | |
976 | udelay(100); | |
977 | } | |
978 | } else { | |
979 | for (i = 0; i < DelayTime; ++i) { | |
980 | if (mdio_read(dev, np->phys[0], MII_BMSR) & BMSR_LSTATUS) { | |
981 | np->linkok = 1; | |
982 | return; | |
983 | } | |
984 | udelay(100); | |
985 | } | |
986 | } | |
987 | } | |
988 | ||
989 | ||
990 | static void getlinktype(struct net_device *dev) | |
991 | { | |
992 | struct netdev_private *np = netdev_priv(dev); | |
993 | ||
994 | if (np->PHYType == MysonPHY) { /* 3-in-1 case */ | |
995 | if (ioread32(np->mem + TCRRCR) & CR_R_FD) | |
996 | np->duplexmode = 2; /* full duplex */ | |
997 | else | |
998 | np->duplexmode = 1; /* half duplex */ | |
999 | if (ioread32(np->mem + TCRRCR) & CR_R_PS10) | |
1000 | np->line_speed = 1; /* 10M */ | |
1001 | else | |
1002 | np->line_speed = 2; /* 100M */ | |
1003 | } else { | |
1004 | if (np->PHYType == SeeqPHY) { /* this PHY is SEEQ 80225 */ | |
1005 | unsigned int data; | |
1006 | ||
1007 | data = mdio_read(dev, np->phys[0], MIIRegister18); | |
1008 | if (data & SPD_DET_100) | |
1009 | np->line_speed = 2; /* 100M */ | |
1010 | else | |
1011 | np->line_speed = 1; /* 10M */ | |
1012 | if (data & DPLX_DET_FULL) | |
1013 | np->duplexmode = 2; /* full duplex mode */ | |
1014 | else | |
1015 | np->duplexmode = 1; /* half duplex mode */ | |
1016 | } else if (np->PHYType == AhdocPHY) { | |
1017 | unsigned int data; | |
1018 | ||
1019 | data = mdio_read(dev, np->phys[0], DiagnosticReg); | |
1020 | if (data & Speed_100) | |
1021 | np->line_speed = 2; /* 100M */ | |
1022 | else | |
1023 | np->line_speed = 1; /* 10M */ | |
1024 | if (data & DPLX_FULL) | |
1025 | np->duplexmode = 2; /* full duplex mode */ | |
1026 | else | |
1027 | np->duplexmode = 1; /* half duplex mode */ | |
1028 | } | |
1029 | /* 89/6/13 add, (begin) */ | |
1030 | else if (np->PHYType == MarvellPHY) { | |
1031 | unsigned int data; | |
1032 | ||
1033 | data = mdio_read(dev, np->phys[0], SpecificReg); | |
1034 | if (data & Full_Duplex) | |
1035 | np->duplexmode = 2; /* full duplex mode */ | |
1036 | else | |
1037 | np->duplexmode = 1; /* half duplex mode */ | |
1038 | data &= SpeedMask; | |
1039 | if (data == Speed_1000M) | |
1040 | np->line_speed = 3; /* 1000M */ | |
1041 | else if (data == Speed_100M) | |
1042 | np->line_speed = 2; /* 100M */ | |
1043 | else | |
1044 | np->line_speed = 1; /* 10M */ | |
1045 | } | |
1046 | /* 89/6/13 add, (end) */ | |
1047 | /* 89/7/27 add, (begin) */ | |
1048 | else if (np->PHYType == Myson981) { | |
1049 | unsigned int data; | |
1050 | ||
1051 | data = mdio_read(dev, np->phys[0], StatusRegister); | |
1052 | ||
1053 | if (data & SPEED100) | |
1054 | np->line_speed = 2; | |
1055 | else | |
1056 | np->line_speed = 1; | |
1057 | ||
1058 | if (data & FULLMODE) | |
1059 | np->duplexmode = 2; | |
1060 | else | |
1061 | np->duplexmode = 1; | |
1062 | } | |
1063 | /* 89/7/27 add, (end) */ | |
1064 | /* 89/12/29 add */ | |
1065 | else if (np->PHYType == LevelOnePHY) { | |
1066 | unsigned int data; | |
1067 | ||
1068 | data = mdio_read(dev, np->phys[0], SpecificReg); | |
1069 | if (data & LXT1000_Full) | |
1070 | np->duplexmode = 2; /* full duplex mode */ | |
1071 | else | |
1072 | np->duplexmode = 1; /* half duplex mode */ | |
1073 | data &= SpeedMask; | |
1074 | if (data == LXT1000_1000M) | |
1075 | np->line_speed = 3; /* 1000M */ | |
1076 | else if (data == LXT1000_100M) | |
1077 | np->line_speed = 2; /* 100M */ | |
1078 | else | |
1079 | np->line_speed = 1; /* 10M */ | |
1080 | } | |
1081 | np->crvalue &= (~CR_W_PS10) & (~CR_W_FD) & (~CR_W_PS1000); | |
1082 | if (np->line_speed == 1) | |
1083 | np->crvalue |= CR_W_PS10; | |
1084 | else if (np->line_speed == 3) | |
1085 | np->crvalue |= CR_W_PS1000; | |
1086 | if (np->duplexmode == 2) | |
1087 | np->crvalue |= CR_W_FD; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | ||
1092 | /* Take lock before calling this */ | |
1093 | static void allocate_rx_buffers(struct net_device *dev) | |
1094 | { | |
1095 | struct netdev_private *np = netdev_priv(dev); | |
1096 | ||
1097 | /* allocate skb for rx buffers */ | |
1098 | while (np->really_rx_count != RX_RING_SIZE) { | |
1099 | struct sk_buff *skb; | |
1100 | ||
1101 | skb = dev_alloc_skb(np->rx_buf_sz); | |
1102 | if (skb == NULL) | |
1103 | break; /* Better luck next round. */ | |
1104 | ||
1105 | while (np->lack_rxbuf->skbuff) | |
1106 | np->lack_rxbuf = np->lack_rxbuf->next_desc_logical; | |
1107 | ||
1108 | skb->dev = dev; /* Mark as being used by this device. */ | |
1109 | np->lack_rxbuf->skbuff = skb; | |
689be439 | 1110 | np->lack_rxbuf->buffer = pci_map_single(np->pci_dev, skb->data, |
1da177e4 LT |
1111 | np->rx_buf_sz, PCI_DMA_FROMDEVICE); |
1112 | np->lack_rxbuf->status = RXOWN; | |
1113 | ++np->really_rx_count; | |
1114 | } | |
1115 | } | |
1116 | ||
1117 | ||
1118 | static void netdev_timer(unsigned long data) | |
1119 | { | |
1120 | struct net_device *dev = (struct net_device *) data; | |
1121 | struct netdev_private *np = netdev_priv(dev); | |
1122 | void __iomem *ioaddr = np->mem; | |
1123 | int old_crvalue = np->crvalue; | |
1124 | unsigned int old_linkok = np->linkok; | |
1125 | unsigned long flags; | |
1126 | ||
1127 | if (debug) | |
1128 | printk(KERN_DEBUG "%s: Media selection timer tick, status %8.8x " | |
1129 | "config %8.8x.\n", dev->name, ioread32(ioaddr + ISR), | |
1130 | ioread32(ioaddr + TCRRCR)); | |
1131 | ||
1132 | spin_lock_irqsave(&np->lock, flags); | |
1133 | ||
1134 | if (np->flags == HAS_MII_XCVR) { | |
1135 | getlinkstatus(dev); | |
1136 | if ((old_linkok == 0) && (np->linkok == 1)) { /* we need to detect the media type again */ | |
1137 | getlinktype(dev); | |
1138 | if (np->crvalue != old_crvalue) { | |
1139 | stop_nic_rxtx(ioaddr, np->crvalue); | |
1140 | iowrite32(np->crvalue, ioaddr + TCRRCR); | |
1141 | } | |
1142 | } | |
1143 | } | |
1144 | ||
1145 | allocate_rx_buffers(dev); | |
1146 | ||
1147 | spin_unlock_irqrestore(&np->lock, flags); | |
1148 | ||
1149 | np->timer.expires = RUN_AT(10 * HZ); | |
1150 | add_timer(&np->timer); | |
1151 | } | |
1152 | ||
1153 | ||
1154 | /* Take lock before calling */ | |
1155 | /* Reset chip and disable rx, tx and interrupts */ | |
1156 | static void reset_and_disable_rxtx(struct net_device *dev) | |
1157 | { | |
1158 | struct netdev_private *np = netdev_priv(dev); | |
1159 | void __iomem *ioaddr = np->mem; | |
1160 | int delay=51; | |
1161 | ||
1162 | /* Reset the chip's Tx and Rx processes. */ | |
1163 | stop_nic_rxtx(ioaddr, 0); | |
1164 | ||
1165 | /* Disable interrupts by clearing the interrupt mask. */ | |
1166 | iowrite32(0, ioaddr + IMR); | |
1167 | ||
1168 | /* Reset the chip to erase previous misconfiguration. */ | |
1169 | iowrite32(0x00000001, ioaddr + BCR); | |
1170 | ||
1171 | /* Ueimor: wait for 50 PCI cycles (and flush posted writes btw). | |
1172 | We surely wait too long (address+data phase). Who cares? */ | |
1173 | while (--delay) { | |
1174 | ioread32(ioaddr + BCR); | |
1175 | rmb(); | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | ||
1180 | /* Take lock before calling */ | |
1181 | /* Restore chip after reset */ | |
1182 | static void enable_rxtx(struct net_device *dev) | |
1183 | { | |
1184 | struct netdev_private *np = netdev_priv(dev); | |
1185 | void __iomem *ioaddr = np->mem; | |
1186 | ||
1187 | reset_rx_descriptors(dev); | |
1188 | ||
1189 | iowrite32(np->tx_ring_dma + ((char*)np->cur_tx - (char*)np->tx_ring), | |
1190 | ioaddr + TXLBA); | |
1191 | iowrite32(np->rx_ring_dma + ((char*)np->cur_rx - (char*)np->rx_ring), | |
1192 | ioaddr + RXLBA); | |
1193 | ||
1194 | iowrite32(np->bcrvalue, ioaddr + BCR); | |
1195 | ||
1196 | iowrite32(0, ioaddr + RXPDR); | |
1197 | __set_rx_mode(dev); /* changes np->crvalue, writes it into TCRRCR */ | |
1198 | ||
1199 | /* Clear and Enable interrupts by setting the interrupt mask. */ | |
1200 | iowrite32(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR); | |
1201 | iowrite32(np->imrvalue, ioaddr + IMR); | |
1202 | ||
1203 | iowrite32(0, ioaddr + TXPDR); | |
1204 | } | |
1205 | ||
1206 | ||
1207 | static void reset_timer(unsigned long data) | |
1208 | { | |
1209 | struct net_device *dev = (struct net_device *) data; | |
1210 | struct netdev_private *np = netdev_priv(dev); | |
1211 | unsigned long flags; | |
1212 | ||
1213 | printk(KERN_WARNING "%s: resetting tx and rx machinery\n", dev->name); | |
1214 | ||
1215 | spin_lock_irqsave(&np->lock, flags); | |
1216 | np->crvalue = np->crvalue_sv; | |
1217 | np->imrvalue = np->imrvalue_sv; | |
1218 | ||
1219 | reset_and_disable_rxtx(dev); | |
1220 | /* works for me without this: | |
1221 | reset_tx_descriptors(dev); */ | |
1222 | enable_rxtx(dev); | |
1223 | netif_start_queue(dev); /* FIXME: or netif_wake_queue(dev); ? */ | |
1224 | ||
1225 | np->reset_timer_armed = 0; | |
1226 | ||
1227 | spin_unlock_irqrestore(&np->lock, flags); | |
1228 | } | |
1229 | ||
1230 | ||
1231 | static void tx_timeout(struct net_device *dev) | |
1232 | { | |
1233 | struct netdev_private *np = netdev_priv(dev); | |
1234 | void __iomem *ioaddr = np->mem; | |
1235 | unsigned long flags; | |
1236 | int i; | |
1237 | ||
1238 | printk(KERN_WARNING "%s: Transmit timed out, status %8.8x," | |
1239 | " resetting...\n", dev->name, ioread32(ioaddr + ISR)); | |
1240 | ||
1241 | { | |
1242 | printk(KERN_DEBUG " Rx ring %p: ", np->rx_ring); | |
1243 | for (i = 0; i < RX_RING_SIZE; i++) | |
1244 | printk(" %8.8x", (unsigned int) np->rx_ring[i].status); | |
1245 | printk("\n" KERN_DEBUG " Tx ring %p: ", np->tx_ring); | |
1246 | for (i = 0; i < TX_RING_SIZE; i++) | |
1247 | printk(" %4.4x", np->tx_ring[i].status); | |
1248 | printk("\n"); | |
1249 | } | |
1250 | ||
1251 | spin_lock_irqsave(&np->lock, flags); | |
1252 | ||
1253 | reset_and_disable_rxtx(dev); | |
1254 | reset_tx_descriptors(dev); | |
1255 | enable_rxtx(dev); | |
1256 | ||
1257 | spin_unlock_irqrestore(&np->lock, flags); | |
1258 | ||
1259 | dev->trans_start = jiffies; | |
1260 | np->stats.tx_errors++; | |
1261 | netif_wake_queue(dev); /* or .._start_.. ?? */ | |
1262 | } | |
1263 | ||
1264 | ||
1265 | /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ | |
1266 | static void init_ring(struct net_device *dev) | |
1267 | { | |
1268 | struct netdev_private *np = netdev_priv(dev); | |
1269 | int i; | |
1270 | ||
1271 | /* initialize rx variables */ | |
1272 | np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); | |
1273 | np->cur_rx = &np->rx_ring[0]; | |
1274 | np->lack_rxbuf = np->rx_ring; | |
1275 | np->really_rx_count = 0; | |
1276 | ||
1277 | /* initial rx descriptors. */ | |
1278 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1279 | np->rx_ring[i].status = 0; | |
1280 | np->rx_ring[i].control = np->rx_buf_sz << RBSShift; | |
1281 | np->rx_ring[i].next_desc = np->rx_ring_dma + | |
1282 | (i + 1)*sizeof(struct fealnx_desc); | |
1283 | np->rx_ring[i].next_desc_logical = &np->rx_ring[i + 1]; | |
1284 | np->rx_ring[i].skbuff = NULL; | |
1285 | } | |
1286 | ||
1287 | /* for the last rx descriptor */ | |
1288 | np->rx_ring[i - 1].next_desc = np->rx_ring_dma; | |
1289 | np->rx_ring[i - 1].next_desc_logical = np->rx_ring; | |
1290 | ||
1291 | /* allocate skb for rx buffers */ | |
1292 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1293 | struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz); | |
1294 | ||
1295 | if (skb == NULL) { | |
1296 | np->lack_rxbuf = &np->rx_ring[i]; | |
1297 | break; | |
1298 | } | |
1299 | ||
1300 | ++np->really_rx_count; | |
1301 | np->rx_ring[i].skbuff = skb; | |
1302 | skb->dev = dev; /* Mark as being used by this device. */ | |
689be439 | 1303 | np->rx_ring[i].buffer = pci_map_single(np->pci_dev, skb->data, |
1da177e4 LT |
1304 | np->rx_buf_sz, PCI_DMA_FROMDEVICE); |
1305 | np->rx_ring[i].status = RXOWN; | |
1306 | np->rx_ring[i].control |= RXIC; | |
1307 | } | |
1308 | ||
1309 | /* initialize tx variables */ | |
1310 | np->cur_tx = &np->tx_ring[0]; | |
1311 | np->cur_tx_copy = &np->tx_ring[0]; | |
1312 | np->really_tx_count = 0; | |
1313 | np->free_tx_count = TX_RING_SIZE; | |
1314 | ||
1315 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1316 | np->tx_ring[i].status = 0; | |
1317 | /* do we need np->tx_ring[i].control = XXX; ?? */ | |
1318 | np->tx_ring[i].next_desc = np->tx_ring_dma + | |
1319 | (i + 1)*sizeof(struct fealnx_desc); | |
1320 | np->tx_ring[i].next_desc_logical = &np->tx_ring[i + 1]; | |
1321 | np->tx_ring[i].skbuff = NULL; | |
1322 | } | |
1323 | ||
1324 | /* for the last tx descriptor */ | |
1325 | np->tx_ring[i - 1].next_desc = np->tx_ring_dma; | |
1326 | np->tx_ring[i - 1].next_desc_logical = &np->tx_ring[0]; | |
1327 | } | |
1328 | ||
1329 | ||
1330 | static int start_tx(struct sk_buff *skb, struct net_device *dev) | |
1331 | { | |
1332 | struct netdev_private *np = netdev_priv(dev); | |
1333 | unsigned long flags; | |
1334 | ||
1335 | spin_lock_irqsave(&np->lock, flags); | |
1336 | ||
1337 | np->cur_tx_copy->skbuff = skb; | |
1338 | ||
1339 | #define one_buffer | |
1340 | #define BPT 1022 | |
1341 | #if defined(one_buffer) | |
1342 | np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data, | |
1343 | skb->len, PCI_DMA_TODEVICE); | |
1344 | np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable; | |
1345 | np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */ | |
1346 | np->cur_tx_copy->control |= (skb->len << TBSShift); /* buffer size */ | |
1347 | // 89/12/29 add, | |
1348 | if (np->pci_dev->device == 0x891) | |
1349 | np->cur_tx_copy->control |= ETIControl | RetryTxLC; | |
1350 | np->cur_tx_copy->status = TXOWN; | |
1351 | np->cur_tx_copy = np->cur_tx_copy->next_desc_logical; | |
1352 | --np->free_tx_count; | |
1353 | #elif defined(two_buffer) | |
1354 | if (skb->len > BPT) { | |
1355 | struct fealnx_desc *next; | |
1356 | ||
1357 | /* for the first descriptor */ | |
1358 | np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data, | |
1359 | BPT, PCI_DMA_TODEVICE); | |
1360 | np->cur_tx_copy->control = TXIC | TXFD | CRCEnable | PADEnable; | |
1361 | np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */ | |
1362 | np->cur_tx_copy->control |= (BPT << TBSShift); /* buffer size */ | |
1363 | ||
1364 | /* for the last descriptor */ | |
1365 | next = np->cur_tx_copy->next_desc_logical; | |
1366 | next->skbuff = skb; | |
1367 | next->control = TXIC | TXLD | CRCEnable | PADEnable; | |
1368 | next->control |= (skb->len << PKTSShift); /* pkt size */ | |
1369 | next->control |= ((skb->len - BPT) << TBSShift); /* buf size */ | |
1370 | // 89/12/29 add, | |
1371 | if (np->pci_dev->device == 0x891) | |
1372 | np->cur_tx_copy->control |= ETIControl | RetryTxLC; | |
1373 | next->buffer = pci_map_single(ep->pci_dev, skb->data + BPT, | |
1374 | skb->len - BPT, PCI_DMA_TODEVICE); | |
1375 | ||
1376 | next->status = TXOWN; | |
1377 | np->cur_tx_copy->status = TXOWN; | |
1378 | ||
1379 | np->cur_tx_copy = next->next_desc_logical; | |
1380 | np->free_tx_count -= 2; | |
1381 | } else { | |
1382 | np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data, | |
1383 | skb->len, PCI_DMA_TODEVICE); | |
1384 | np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable; | |
1385 | np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */ | |
1386 | np->cur_tx_copy->control |= (skb->len << TBSShift); /* buffer size */ | |
1387 | // 89/12/29 add, | |
1388 | if (np->pci_dev->device == 0x891) | |
1389 | np->cur_tx_copy->control |= ETIControl | RetryTxLC; | |
1390 | np->cur_tx_copy->status = TXOWN; | |
1391 | np->cur_tx_copy = np->cur_tx_copy->next_desc_logical; | |
1392 | --np->free_tx_count; | |
1393 | } | |
1394 | #endif | |
1395 | ||
1396 | if (np->free_tx_count < 2) | |
1397 | netif_stop_queue(dev); | |
1398 | ++np->really_tx_count; | |
1399 | iowrite32(0, np->mem + TXPDR); | |
1400 | dev->trans_start = jiffies; | |
1401 | ||
1402 | spin_unlock_irqrestore(&np->lock, flags); | |
1403 | return 0; | |
1404 | } | |
1405 | ||
1406 | ||
1407 | /* Take lock before calling */ | |
1408 | /* Chip probably hosed tx ring. Clean up. */ | |
1409 | static void reset_tx_descriptors(struct net_device *dev) | |
1410 | { | |
1411 | struct netdev_private *np = netdev_priv(dev); | |
1412 | struct fealnx_desc *cur; | |
1413 | int i; | |
1414 | ||
1415 | /* initialize tx variables */ | |
1416 | np->cur_tx = &np->tx_ring[0]; | |
1417 | np->cur_tx_copy = &np->tx_ring[0]; | |
1418 | np->really_tx_count = 0; | |
1419 | np->free_tx_count = TX_RING_SIZE; | |
1420 | ||
1421 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1422 | cur = &np->tx_ring[i]; | |
1423 | if (cur->skbuff) { | |
1424 | pci_unmap_single(np->pci_dev, cur->buffer, | |
1425 | cur->skbuff->len, PCI_DMA_TODEVICE); | |
400de2c0 | 1426 | dev_kfree_skb_any(cur->skbuff); |
1da177e4 LT |
1427 | cur->skbuff = NULL; |
1428 | } | |
1429 | cur->status = 0; | |
1430 | cur->control = 0; /* needed? */ | |
1431 | /* probably not needed. We do it for purely paranoid reasons */ | |
1432 | cur->next_desc = np->tx_ring_dma + | |
1433 | (i + 1)*sizeof(struct fealnx_desc); | |
1434 | cur->next_desc_logical = &np->tx_ring[i + 1]; | |
1435 | } | |
1436 | /* for the last tx descriptor */ | |
1437 | np->tx_ring[TX_RING_SIZE - 1].next_desc = np->tx_ring_dma; | |
1438 | np->tx_ring[TX_RING_SIZE - 1].next_desc_logical = &np->tx_ring[0]; | |
1439 | } | |
1440 | ||
1441 | ||
1442 | /* Take lock and stop rx before calling this */ | |
1443 | static void reset_rx_descriptors(struct net_device *dev) | |
1444 | { | |
1445 | struct netdev_private *np = netdev_priv(dev); | |
1446 | struct fealnx_desc *cur = np->cur_rx; | |
1447 | int i; | |
1448 | ||
1449 | allocate_rx_buffers(dev); | |
1450 | ||
1451 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1452 | if (cur->skbuff) | |
1453 | cur->status = RXOWN; | |
1454 | cur = cur->next_desc_logical; | |
1455 | } | |
1456 | ||
1457 | iowrite32(np->rx_ring_dma + ((char*)np->cur_rx - (char*)np->rx_ring), | |
1458 | np->mem + RXLBA); | |
1459 | } | |
1460 | ||
1461 | ||
1462 | /* The interrupt handler does all of the Rx thread work and cleans up | |
1463 | after the Tx thread. */ | |
1464 | static irqreturn_t intr_handler(int irq, void *dev_instance, struct pt_regs *rgs) | |
1465 | { | |
1466 | struct net_device *dev = (struct net_device *) dev_instance; | |
1467 | struct netdev_private *np = netdev_priv(dev); | |
1468 | void __iomem *ioaddr = np->mem; | |
1469 | long boguscnt = max_interrupt_work; | |
1470 | unsigned int num_tx = 0; | |
1471 | int handled = 0; | |
1472 | ||
1473 | spin_lock(&np->lock); | |
1474 | ||
1475 | iowrite32(0, ioaddr + IMR); | |
1476 | ||
1477 | do { | |
1478 | u32 intr_status = ioread32(ioaddr + ISR); | |
1479 | ||
1480 | /* Acknowledge all of the current interrupt sources ASAP. */ | |
1481 | iowrite32(intr_status, ioaddr + ISR); | |
1482 | ||
1483 | if (debug) | |
1484 | printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n", dev->name, | |
1485 | intr_status); | |
1486 | ||
1487 | if (!(intr_status & np->imrvalue)) | |
1488 | break; | |
1489 | ||
1490 | handled = 1; | |
1491 | ||
1492 | // 90/1/16 delete, | |
1493 | // | |
1494 | // if (intr_status & FBE) | |
1495 | // { /* fatal error */ | |
1496 | // stop_nic_tx(ioaddr, 0); | |
1497 | // stop_nic_rx(ioaddr, 0); | |
1498 | // break; | |
1499 | // }; | |
1500 | ||
1501 | if (intr_status & TUNF) | |
1502 | iowrite32(0, ioaddr + TXPDR); | |
1503 | ||
1504 | if (intr_status & CNTOVF) { | |
1505 | /* missed pkts */ | |
1506 | np->stats.rx_missed_errors += ioread32(ioaddr + TALLY) & 0x7fff; | |
1507 | ||
1508 | /* crc error */ | |
1509 | np->stats.rx_crc_errors += | |
1510 | (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16; | |
1511 | } | |
1512 | ||
1513 | if (intr_status & (RI | RBU)) { | |
1514 | if (intr_status & RI) | |
1515 | netdev_rx(dev); | |
1516 | else { | |
1517 | stop_nic_rx(ioaddr, np->crvalue); | |
1518 | reset_rx_descriptors(dev); | |
1519 | iowrite32(np->crvalue, ioaddr + TCRRCR); | |
1520 | } | |
1521 | } | |
1522 | ||
1523 | while (np->really_tx_count) { | |
1524 | long tx_status = np->cur_tx->status; | |
1525 | long tx_control = np->cur_tx->control; | |
1526 | ||
1527 | if (!(tx_control & TXLD)) { /* this pkt is combined by two tx descriptors */ | |
1528 | struct fealnx_desc *next; | |
1529 | ||
1530 | next = np->cur_tx->next_desc_logical; | |
1531 | tx_status = next->status; | |
1532 | tx_control = next->control; | |
1533 | } | |
1534 | ||
1535 | if (tx_status & TXOWN) | |
1536 | break; | |
1537 | ||
1538 | if (!(np->crvalue & CR_W_ENH)) { | |
1539 | if (tx_status & (CSL | LC | EC | UDF | HF)) { | |
1540 | np->stats.tx_errors++; | |
1541 | if (tx_status & EC) | |
1542 | np->stats.tx_aborted_errors++; | |
1543 | if (tx_status & CSL) | |
1544 | np->stats.tx_carrier_errors++; | |
1545 | if (tx_status & LC) | |
1546 | np->stats.tx_window_errors++; | |
1547 | if (tx_status & UDF) | |
1548 | np->stats.tx_fifo_errors++; | |
1549 | if ((tx_status & HF) && np->mii.full_duplex == 0) | |
1550 | np->stats.tx_heartbeat_errors++; | |
1551 | ||
1552 | } else { | |
1553 | np->stats.tx_bytes += | |
1554 | ((tx_control & PKTSMask) >> PKTSShift); | |
1555 | ||
1556 | np->stats.collisions += | |
1557 | ((tx_status & NCRMask) >> NCRShift); | |
1558 | np->stats.tx_packets++; | |
1559 | } | |
1560 | } else { | |
1561 | np->stats.tx_bytes += | |
1562 | ((tx_control & PKTSMask) >> PKTSShift); | |
1563 | np->stats.tx_packets++; | |
1564 | } | |
1565 | ||
1566 | /* Free the original skb. */ | |
1567 | pci_unmap_single(np->pci_dev, np->cur_tx->buffer, | |
1568 | np->cur_tx->skbuff->len, PCI_DMA_TODEVICE); | |
1569 | dev_kfree_skb_irq(np->cur_tx->skbuff); | |
1570 | np->cur_tx->skbuff = NULL; | |
1571 | --np->really_tx_count; | |
1572 | if (np->cur_tx->control & TXLD) { | |
1573 | np->cur_tx = np->cur_tx->next_desc_logical; | |
1574 | ++np->free_tx_count; | |
1575 | } else { | |
1576 | np->cur_tx = np->cur_tx->next_desc_logical; | |
1577 | np->cur_tx = np->cur_tx->next_desc_logical; | |
1578 | np->free_tx_count += 2; | |
1579 | } | |
1580 | num_tx++; | |
1581 | } /* end of for loop */ | |
1582 | ||
1583 | if (num_tx && np->free_tx_count >= 2) | |
1584 | netif_wake_queue(dev); | |
1585 | ||
1586 | /* read transmit status for enhanced mode only */ | |
1587 | if (np->crvalue & CR_W_ENH) { | |
1588 | long data; | |
1589 | ||
1590 | data = ioread32(ioaddr + TSR); | |
1591 | np->stats.tx_errors += (data & 0xff000000) >> 24; | |
1592 | np->stats.tx_aborted_errors += (data & 0xff000000) >> 24; | |
1593 | np->stats.tx_window_errors += (data & 0x00ff0000) >> 16; | |
1594 | np->stats.collisions += (data & 0x0000ffff); | |
1595 | } | |
1596 | ||
1597 | if (--boguscnt < 0) { | |
1598 | printk(KERN_WARNING "%s: Too much work at interrupt, " | |
1599 | "status=0x%4.4x.\n", dev->name, intr_status); | |
1600 | if (!np->reset_timer_armed) { | |
1601 | np->reset_timer_armed = 1; | |
1602 | np->reset_timer.expires = RUN_AT(HZ/2); | |
1603 | add_timer(&np->reset_timer); | |
1604 | stop_nic_rxtx(ioaddr, 0); | |
1605 | netif_stop_queue(dev); | |
1606 | /* or netif_tx_disable(dev); ?? */ | |
1607 | /* Prevent other paths from enabling tx,rx,intrs */ | |
1608 | np->crvalue_sv = np->crvalue; | |
1609 | np->imrvalue_sv = np->imrvalue; | |
1610 | np->crvalue &= ~(CR_W_TXEN | CR_W_RXEN); /* or simply = 0? */ | |
1611 | np->imrvalue = 0; | |
1612 | } | |
1613 | ||
1614 | break; | |
1615 | } | |
1616 | } while (1); | |
1617 | ||
1618 | /* read the tally counters */ | |
1619 | /* missed pkts */ | |
1620 | np->stats.rx_missed_errors += ioread32(ioaddr + TALLY) & 0x7fff; | |
1621 | ||
1622 | /* crc error */ | |
1623 | np->stats.rx_crc_errors += (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16; | |
1624 | ||
1625 | if (debug) | |
1626 | printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", | |
1627 | dev->name, ioread32(ioaddr + ISR)); | |
1628 | ||
1629 | iowrite32(np->imrvalue, ioaddr + IMR); | |
1630 | ||
1631 | spin_unlock(&np->lock); | |
1632 | ||
1633 | return IRQ_RETVAL(handled); | |
1634 | } | |
1635 | ||
1636 | ||
1637 | /* This routine is logically part of the interrupt handler, but separated | |
1638 | for clarity and better register allocation. */ | |
1639 | static int netdev_rx(struct net_device *dev) | |
1640 | { | |
1641 | struct netdev_private *np = netdev_priv(dev); | |
1642 | void __iomem *ioaddr = np->mem; | |
1643 | ||
1644 | /* If EOP is set on the next entry, it's a new packet. Send it up. */ | |
1645 | while (!(np->cur_rx->status & RXOWN) && np->cur_rx->skbuff) { | |
1646 | s32 rx_status = np->cur_rx->status; | |
1647 | ||
1648 | if (np->really_rx_count == 0) | |
1649 | break; | |
1650 | ||
1651 | if (debug) | |
1652 | printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n", rx_status); | |
1653 | ||
1654 | if ((!((rx_status & RXFSD) && (rx_status & RXLSD))) | |
1655 | || (rx_status & ErrorSummary)) { | |
1656 | if (rx_status & ErrorSummary) { /* there was a fatal error */ | |
1657 | if (debug) | |
1658 | printk(KERN_DEBUG | |
1659 | "%s: Receive error, Rx status %8.8x.\n", | |
1660 | dev->name, rx_status); | |
1661 | ||
1662 | np->stats.rx_errors++; /* end of a packet. */ | |
1663 | if (rx_status & (LONG | RUNT)) | |
1664 | np->stats.rx_length_errors++; | |
1665 | if (rx_status & RXER) | |
1666 | np->stats.rx_frame_errors++; | |
1667 | if (rx_status & CRC) | |
1668 | np->stats.rx_crc_errors++; | |
1669 | } else { | |
1670 | int need_to_reset = 0; | |
1671 | int desno = 0; | |
1672 | ||
1673 | if (rx_status & RXFSD) { /* this pkt is too long, over one rx buffer */ | |
1674 | struct fealnx_desc *cur; | |
1675 | ||
1676 | /* check this packet is received completely? */ | |
1677 | cur = np->cur_rx; | |
1678 | while (desno <= np->really_rx_count) { | |
1679 | ++desno; | |
1680 | if ((!(cur->status & RXOWN)) | |
1681 | && (cur->status & RXLSD)) | |
1682 | break; | |
1683 | /* goto next rx descriptor */ | |
1684 | cur = cur->next_desc_logical; | |
1685 | } | |
1686 | if (desno > np->really_rx_count) | |
1687 | need_to_reset = 1; | |
1688 | } else /* RXLSD did not find, something error */ | |
1689 | need_to_reset = 1; | |
1690 | ||
1691 | if (need_to_reset == 0) { | |
1692 | int i; | |
1693 | ||
1694 | np->stats.rx_length_errors++; | |
1695 | ||
1696 | /* free all rx descriptors related this long pkt */ | |
1697 | for (i = 0; i < desno; ++i) { | |
1698 | if (!np->cur_rx->skbuff) { | |
1699 | printk(KERN_DEBUG | |
1700 | "%s: I'm scared\n", dev->name); | |
1701 | break; | |
1702 | } | |
1703 | np->cur_rx->status = RXOWN; | |
1704 | np->cur_rx = np->cur_rx->next_desc_logical; | |
1705 | } | |
1706 | continue; | |
1707 | } else { /* rx error, need to reset this chip */ | |
1708 | stop_nic_rx(ioaddr, np->crvalue); | |
1709 | reset_rx_descriptors(dev); | |
1710 | iowrite32(np->crvalue, ioaddr + TCRRCR); | |
1711 | } | |
1712 | break; /* exit the while loop */ | |
1713 | } | |
1714 | } else { /* this received pkt is ok */ | |
1715 | ||
1716 | struct sk_buff *skb; | |
1717 | /* Omit the four octet CRC from the length. */ | |
1718 | short pkt_len = ((rx_status & FLNGMASK) >> FLNGShift) - 4; | |
1719 | ||
1720 | #ifndef final_version | |
1721 | if (debug) | |
1722 | printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d" | |
1723 | " status %x.\n", pkt_len, rx_status); | |
1724 | #endif | |
1725 | ||
1726 | /* Check if the packet is long enough to accept without copying | |
1727 | to a minimally-sized skbuff. */ | |
1728 | if (pkt_len < rx_copybreak && | |
1729 | (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { | |
1730 | skb->dev = dev; | |
1731 | skb_reserve(skb, 2); /* 16 byte align the IP header */ | |
1732 | pci_dma_sync_single_for_cpu(np->pci_dev, | |
1733 | np->cur_rx->buffer, | |
1734 | np->rx_buf_sz, | |
1735 | PCI_DMA_FROMDEVICE); | |
1736 | /* Call copy + cksum if available. */ | |
1737 | ||
1738 | #if ! defined(__alpha__) | |
1739 | eth_copy_and_sum(skb, | |
689be439 | 1740 | np->cur_rx->skbuff->data, pkt_len, 0); |
1da177e4 LT |
1741 | skb_put(skb, pkt_len); |
1742 | #else | |
1743 | memcpy(skb_put(skb, pkt_len), | |
689be439 | 1744 | np->cur_rx->skbuff->data, pkt_len); |
1da177e4 LT |
1745 | #endif |
1746 | pci_dma_sync_single_for_device(np->pci_dev, | |
1747 | np->cur_rx->buffer, | |
1748 | np->rx_buf_sz, | |
1749 | PCI_DMA_FROMDEVICE); | |
1750 | } else { | |
1751 | pci_unmap_single(np->pci_dev, | |
1752 | np->cur_rx->buffer, | |
1753 | np->rx_buf_sz, | |
1754 | PCI_DMA_FROMDEVICE); | |
1755 | skb_put(skb = np->cur_rx->skbuff, pkt_len); | |
1756 | np->cur_rx->skbuff = NULL; | |
1757 | --np->really_rx_count; | |
1758 | } | |
1759 | skb->protocol = eth_type_trans(skb, dev); | |
1760 | netif_rx(skb); | |
1761 | dev->last_rx = jiffies; | |
1762 | np->stats.rx_packets++; | |
1763 | np->stats.rx_bytes += pkt_len; | |
1764 | } | |
1765 | ||
1766 | np->cur_rx = np->cur_rx->next_desc_logical; | |
1767 | } /* end of while loop */ | |
1768 | ||
1769 | /* allocate skb for rx buffers */ | |
1770 | allocate_rx_buffers(dev); | |
1771 | ||
1772 | return 0; | |
1773 | } | |
1774 | ||
1775 | ||
1776 | static struct net_device_stats *get_stats(struct net_device *dev) | |
1777 | { | |
1778 | struct netdev_private *np = netdev_priv(dev); | |
1779 | void __iomem *ioaddr = np->mem; | |
1780 | ||
1781 | /* The chip only need report frame silently dropped. */ | |
1782 | if (netif_running(dev)) { | |
1783 | np->stats.rx_missed_errors += ioread32(ioaddr + TALLY) & 0x7fff; | |
1784 | np->stats.rx_crc_errors += (ioread32(ioaddr + TALLY) & 0x7fff0000) >> 16; | |
1785 | } | |
1786 | ||
1787 | return &np->stats; | |
1788 | } | |
1789 | ||
1790 | ||
1791 | /* for dev->set_multicast_list */ | |
1792 | static void set_rx_mode(struct net_device *dev) | |
1793 | { | |
1794 | spinlock_t *lp = &((struct netdev_private *)netdev_priv(dev))->lock; | |
1795 | unsigned long flags; | |
1796 | spin_lock_irqsave(lp, flags); | |
1797 | __set_rx_mode(dev); | |
1798 | spin_unlock_irqrestore(lp, flags); | |
1799 | } | |
1800 | ||
1801 | ||
1802 | /* Take lock before calling */ | |
1803 | static void __set_rx_mode(struct net_device *dev) | |
1804 | { | |
1805 | struct netdev_private *np = netdev_priv(dev); | |
1806 | void __iomem *ioaddr = np->mem; | |
1807 | u32 mc_filter[2]; /* Multicast hash filter */ | |
1808 | u32 rx_mode; | |
1809 | ||
1810 | if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ | |
1811 | /* Unconditionally log net taps. */ | |
1812 | printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name); | |
1813 | memset(mc_filter, 0xff, sizeof(mc_filter)); | |
1814 | rx_mode = CR_W_PROM | CR_W_AB | CR_W_AM; | |
1815 | } else if ((dev->mc_count > multicast_filter_limit) | |
1816 | || (dev->flags & IFF_ALLMULTI)) { | |
1817 | /* Too many to match, or accept all multicasts. */ | |
1818 | memset(mc_filter, 0xff, sizeof(mc_filter)); | |
1819 | rx_mode = CR_W_AB | CR_W_AM; | |
1820 | } else { | |
1821 | struct dev_mc_list *mclist; | |
1822 | int i; | |
1823 | ||
1824 | memset(mc_filter, 0, sizeof(mc_filter)); | |
1825 | for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; | |
1826 | i++, mclist = mclist->next) { | |
1827 | unsigned int bit; | |
1828 | bit = (ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26) ^ 0x3F; | |
1829 | mc_filter[bit >> 5] |= (1 << bit); | |
1830 | } | |
1831 | rx_mode = CR_W_AB | CR_W_AM; | |
1832 | } | |
1833 | ||
1834 | stop_nic_rxtx(ioaddr, np->crvalue); | |
1835 | ||
1836 | iowrite32(mc_filter[0], ioaddr + MAR0); | |
1837 | iowrite32(mc_filter[1], ioaddr + MAR1); | |
1838 | np->crvalue &= ~CR_W_RXMODEMASK; | |
1839 | np->crvalue |= rx_mode; | |
1840 | iowrite32(np->crvalue, ioaddr + TCRRCR); | |
1841 | } | |
1842 | ||
1843 | static void netdev_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) | |
1844 | { | |
1845 | struct netdev_private *np = netdev_priv(dev); | |
1846 | ||
1847 | strcpy(info->driver, DRV_NAME); | |
1848 | strcpy(info->version, DRV_VERSION); | |
1849 | strcpy(info->bus_info, pci_name(np->pci_dev)); | |
1850 | } | |
1851 | ||
1852 | static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1853 | { | |
1854 | struct netdev_private *np = netdev_priv(dev); | |
1855 | int rc; | |
1856 | ||
1857 | spin_lock_irq(&np->lock); | |
1858 | rc = mii_ethtool_gset(&np->mii, cmd); | |
1859 | spin_unlock_irq(&np->lock); | |
1860 | ||
1861 | return rc; | |
1862 | } | |
1863 | ||
1864 | static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1865 | { | |
1866 | struct netdev_private *np = netdev_priv(dev); | |
1867 | int rc; | |
1868 | ||
1869 | spin_lock_irq(&np->lock); | |
1870 | rc = mii_ethtool_sset(&np->mii, cmd); | |
1871 | spin_unlock_irq(&np->lock); | |
1872 | ||
1873 | return rc; | |
1874 | } | |
1875 | ||
1876 | static int netdev_nway_reset(struct net_device *dev) | |
1877 | { | |
1878 | struct netdev_private *np = netdev_priv(dev); | |
1879 | return mii_nway_restart(&np->mii); | |
1880 | } | |
1881 | ||
1882 | static u32 netdev_get_link(struct net_device *dev) | |
1883 | { | |
1884 | struct netdev_private *np = netdev_priv(dev); | |
1885 | return mii_link_ok(&np->mii); | |
1886 | } | |
1887 | ||
1888 | static u32 netdev_get_msglevel(struct net_device *dev) | |
1889 | { | |
1890 | return debug; | |
1891 | } | |
1892 | ||
1893 | static void netdev_set_msglevel(struct net_device *dev, u32 value) | |
1894 | { | |
1895 | debug = value; | |
1896 | } | |
1897 | ||
1898 | static struct ethtool_ops netdev_ethtool_ops = { | |
1899 | .get_drvinfo = netdev_get_drvinfo, | |
1900 | .get_settings = netdev_get_settings, | |
1901 | .set_settings = netdev_set_settings, | |
1902 | .nway_reset = netdev_nway_reset, | |
1903 | .get_link = netdev_get_link, | |
1904 | .get_msglevel = netdev_get_msglevel, | |
1905 | .set_msglevel = netdev_set_msglevel, | |
1906 | .get_sg = ethtool_op_get_sg, | |
1907 | .get_tx_csum = ethtool_op_get_tx_csum, | |
1908 | }; | |
1909 | ||
1910 | static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1911 | { | |
1912 | struct netdev_private *np = netdev_priv(dev); | |
1913 | int rc; | |
1914 | ||
1915 | if (!netif_running(dev)) | |
1916 | return -EINVAL; | |
1917 | ||
1918 | spin_lock_irq(&np->lock); | |
1919 | rc = generic_mii_ioctl(&np->mii, if_mii(rq), cmd, NULL); | |
1920 | spin_unlock_irq(&np->lock); | |
1921 | ||
1922 | return rc; | |
1923 | } | |
1924 | ||
1925 | ||
1926 | static int netdev_close(struct net_device *dev) | |
1927 | { | |
1928 | struct netdev_private *np = netdev_priv(dev); | |
1929 | void __iomem *ioaddr = np->mem; | |
1930 | int i; | |
1931 | ||
1932 | netif_stop_queue(dev); | |
1933 | ||
1934 | /* Disable interrupts by clearing the interrupt mask. */ | |
1935 | iowrite32(0x0000, ioaddr + IMR); | |
1936 | ||
1937 | /* Stop the chip's Tx and Rx processes. */ | |
1938 | stop_nic_rxtx(ioaddr, 0); | |
1939 | ||
1940 | del_timer_sync(&np->timer); | |
1941 | del_timer_sync(&np->reset_timer); | |
1942 | ||
1943 | free_irq(dev->irq, dev); | |
1944 | ||
1945 | /* Free all the skbuffs in the Rx queue. */ | |
1946 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1947 | struct sk_buff *skb = np->rx_ring[i].skbuff; | |
1948 | ||
1949 | np->rx_ring[i].status = 0; | |
1950 | if (skb) { | |
1951 | pci_unmap_single(np->pci_dev, np->rx_ring[i].buffer, | |
1952 | np->rx_buf_sz, PCI_DMA_FROMDEVICE); | |
1953 | dev_kfree_skb(skb); | |
1954 | np->rx_ring[i].skbuff = NULL; | |
1955 | } | |
1956 | } | |
1957 | ||
1958 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1959 | struct sk_buff *skb = np->tx_ring[i].skbuff; | |
1960 | ||
1961 | if (skb) { | |
1962 | pci_unmap_single(np->pci_dev, np->tx_ring[i].buffer, | |
1963 | skb->len, PCI_DMA_TODEVICE); | |
1964 | dev_kfree_skb(skb); | |
1965 | np->tx_ring[i].skbuff = NULL; | |
1966 | } | |
1967 | } | |
1968 | ||
1969 | return 0; | |
1970 | } | |
1971 | ||
1972 | static struct pci_device_id fealnx_pci_tbl[] = { | |
1973 | {0x1516, 0x0800, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1974 | {0x1516, 0x0803, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1}, | |
1975 | {0x1516, 0x0891, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2}, | |
1976 | {} /* terminate list */ | |
1977 | }; | |
1978 | MODULE_DEVICE_TABLE(pci, fealnx_pci_tbl); | |
1979 | ||
1980 | ||
1981 | static struct pci_driver fealnx_driver = { | |
1982 | .name = "fealnx", | |
1983 | .id_table = fealnx_pci_tbl, | |
1984 | .probe = fealnx_init_one, | |
1985 | .remove = __devexit_p(fealnx_remove_one), | |
1986 | }; | |
1987 | ||
1988 | static int __init fealnx_init(void) | |
1989 | { | |
1990 | /* when a module, this is printed whether or not devices are found in probe */ | |
1991 | #ifdef MODULE | |
1992 | printk(version); | |
1993 | #endif | |
1994 | ||
1995 | return pci_module_init(&fealnx_driver); | |
1996 | } | |
1997 | ||
1998 | static void __exit fealnx_exit(void) | |
1999 | { | |
2000 | pci_unregister_driver(&fealnx_driver); | |
2001 | } | |
2002 | ||
2003 | module_init(fealnx_init); | |
2004 | module_exit(fealnx_exit); |