]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | ||
3 | drivers/net/pci-skeleton.c | |
4 | ||
5 | Maintained by Jeff Garzik <jgarzik@pobox.com> | |
6 | ||
7 | Original code came from 8139too.c, which in turns was based | |
8 | originally on Donald Becker's rtl8139.c driver, versions 1.11 | |
9 | and older. This driver was originally based on rtl8139.c | |
10 | version 1.07. Header of rtl8139.c version 1.11: | |
11 | ||
12 | -----<snip>----- | |
13 | ||
14 | Written 1997-2000 by Donald Becker. | |
15 | This software may be used and distributed according to the | |
16 | terms of the GNU General Public License (GPL), incorporated | |
17 | herein by reference. Drivers based on or derived from this | |
18 | code fall under the GPL and must retain the authorship, | |
19 | copyright and license notice. This file is not a complete | |
20 | program and may only be used when the entire operating | |
21 | system is licensed under the GPL. | |
22 | ||
23 | This driver is for boards based on the RTL8129 and RTL8139 | |
24 | PCI ethernet chips. | |
25 | ||
26 | The author may be reached as becker@scyld.com, or C/O Scyld | |
27 | Computing Corporation 410 Severn Ave., Suite 210 Annapolis | |
28 | MD 21403 | |
29 | ||
30 | Support and updates available at | |
31 | http://www.scyld.com/network/rtl8139.html | |
32 | ||
33 | Twister-tuning table provided by Kinston | |
34 | <shangh@realtek.com.tw>. | |
35 | ||
36 | -----<snip>----- | |
37 | ||
38 | This software may be used and distributed according to the terms | |
39 | of the GNU General Public License, incorporated herein by reference. | |
40 | ||
41 | ||
42 | ----------------------------------------------------------------------------- | |
43 | ||
44 | Theory of Operation | |
45 | ||
46 | I. Board Compatibility | |
47 | ||
48 | This device driver is designed for the RealTek RTL8139 series, the RealTek | |
49 | Fast Ethernet controllers for PCI and CardBus. This chip is used on many | |
50 | low-end boards, sometimes with its markings changed. | |
51 | ||
52 | ||
53 | II. Board-specific settings | |
54 | ||
55 | PCI bus devices are configured by the system at boot time, so no jumpers | |
56 | need to be set on the board. The system BIOS will assign the | |
57 | PCI INTA signal to a (preferably otherwise unused) system IRQ line. | |
58 | ||
59 | III. Driver operation | |
60 | ||
61 | IIIa. Rx Ring buffers | |
62 | ||
63 | The receive unit uses a single linear ring buffer rather than the more | |
64 | common (and more efficient) descriptor-based architecture. Incoming frames | |
65 | are sequentially stored into the Rx region, and the host copies them into | |
66 | skbuffs. | |
67 | ||
68 | Comment: While it is theoretically possible to process many frames in place, | |
69 | any delay in Rx processing would cause us to drop frames. More importantly, | |
70 | the Linux protocol stack is not designed to operate in this manner. | |
71 | ||
72 | IIIb. Tx operation | |
73 | ||
74 | The RTL8139 uses a fixed set of four Tx descriptors in register space. | |
75 | In a stunningly bad design choice, Tx frames must be 32 bit aligned. Linux | |
76 | aligns the IP header on word boundaries, and 14 byte ethernet header means | |
77 | that almost all frames will need to be copied to an alignment buffer. | |
78 | ||
79 | IVb. References | |
80 | ||
81 | http://www.realtek.com.tw/cn/cn.html | |
82 | http://www.scyld.com/expert/NWay.html | |
83 | ||
84 | IVc. Errata | |
85 | ||
86 | */ | |
87 | ||
88 | #include <linux/config.h> | |
89 | #include <linux/module.h> | |
90 | #include <linux/kernel.h> | |
91 | #include <linux/pci.h> | |
92 | #include <linux/init.h> | |
93 | #include <linux/ioport.h> | |
94 | #include <linux/netdevice.h> | |
95 | #include <linux/etherdevice.h> | |
96 | #include <linux/delay.h> | |
97 | #include <linux/ethtool.h> | |
98 | #include <linux/mii.h> | |
99 | #include <linux/crc32.h> | |
100 | #include <asm/io.h> | |
101 | ||
102 | #define NETDRV_VERSION "1.0.0" | |
103 | #define MODNAME "netdrv" | |
104 | #define NETDRV_DRIVER_LOAD_MSG "MyVendor Fast Ethernet driver " NETDRV_VERSION " loaded" | |
105 | #define PFX MODNAME ": " | |
106 | ||
107 | static char version[] __devinitdata = | |
108 | KERN_INFO NETDRV_DRIVER_LOAD_MSG "\n" | |
109 | KERN_INFO " Support available from http://foo.com/bar/baz.html\n"; | |
110 | ||
111 | /* define to 1 to enable PIO instead of MMIO */ | |
112 | #undef USE_IO_OPS | |
113 | ||
114 | /* define to 1 to enable copious debugging info */ | |
115 | #undef NETDRV_DEBUG | |
116 | ||
117 | /* define to 1 to disable lightweight runtime debugging checks */ | |
118 | #undef NETDRV_NDEBUG | |
119 | ||
120 | ||
121 | #ifdef NETDRV_DEBUG | |
122 | /* note: prints function name for you */ | |
123 | # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args) | |
124 | #else | |
125 | # define DPRINTK(fmt, args...) | |
126 | #endif | |
127 | ||
128 | #ifdef NETDRV_NDEBUG | |
129 | # define assert(expr) do {} while (0) | |
130 | #else | |
131 | # define assert(expr) \ | |
132 | if(!(expr)) { \ | |
133 | printk( "Assertion failed! %s,%s,%s,line=%d\n", \ | |
134 | #expr,__FILE__,__FUNCTION__,__LINE__); \ | |
135 | } | |
136 | #endif | |
137 | ||
138 | ||
139 | /* A few user-configurable values. */ | |
140 | /* media options */ | |
141 | static int media[] = {-1, -1, -1, -1, -1, -1, -1, -1}; | |
142 | ||
143 | /* Maximum events (Rx packets, etc.) to handle at each interrupt. */ | |
144 | static int max_interrupt_work = 20; | |
145 | ||
146 | /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). | |
147 | The RTL chips use a 64 element hash table based on the Ethernet CRC. */ | |
148 | static int multicast_filter_limit = 32; | |
149 | ||
150 | /* Size of the in-memory receive ring. */ | |
151 | #define RX_BUF_LEN_IDX 2 /* 0==8K, 1==16K, 2==32K, 3==64K */ | |
152 | #define RX_BUF_LEN (8192 << RX_BUF_LEN_IDX) | |
153 | #define RX_BUF_PAD 16 | |
154 | #define RX_BUF_WRAP_PAD 2048 /* spare padding to handle lack of packet wrap */ | |
155 | #define RX_BUF_TOT_LEN (RX_BUF_LEN + RX_BUF_PAD + RX_BUF_WRAP_PAD) | |
156 | ||
157 | /* Number of Tx descriptor registers. */ | |
158 | #define NUM_TX_DESC 4 | |
159 | ||
160 | /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/ | |
161 | #define MAX_ETH_FRAME_SIZE 1536 | |
162 | ||
163 | /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */ | |
164 | #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE | |
165 | #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC) | |
166 | ||
167 | /* PCI Tuning Parameters | |
168 | Threshold is bytes transferred to chip before transmission starts. */ | |
169 | #define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */ | |
170 | ||
171 | /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */ | |
172 | #define RX_FIFO_THRESH 6 /* Rx buffer level before first PCI xfer. */ | |
173 | #define RX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */ | |
174 | #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */ | |
175 | ||
176 | ||
177 | /* Operational parameters that usually are not changed. */ | |
178 | /* Time in jiffies before concluding the transmitter is hung. */ | |
179 | #define TX_TIMEOUT (6*HZ) | |
180 | ||
181 | ||
182 | enum { | |
183 | HAS_CHIP_XCVR = 0x020000, | |
184 | HAS_LNK_CHNG = 0x040000, | |
185 | }; | |
186 | ||
187 | #define NETDRV_MIN_IO_SIZE 0x80 | |
188 | #define RTL8139B_IO_SIZE 256 | |
189 | ||
190 | #define NETDRV_CAPS HAS_CHIP_XCVR|HAS_LNK_CHNG | |
191 | ||
192 | typedef enum { | |
193 | RTL8139 = 0, | |
194 | NETDRV_CB, | |
195 | SMC1211TX, | |
196 | /*MPX5030,*/ | |
197 | DELTA8139, | |
198 | ADDTRON8139, | |
199 | } board_t; | |
200 | ||
201 | ||
202 | /* indexed by board_t, above */ | |
203 | static struct { | |
204 | const char *name; | |
205 | } board_info[] __devinitdata = { | |
206 | { "RealTek RTL8139 Fast Ethernet" }, | |
207 | { "RealTek RTL8139B PCI/CardBus" }, | |
208 | { "SMC1211TX EZCard 10/100 (RealTek RTL8139)" }, | |
209 | /* { MPX5030, "Accton MPX5030 (RealTek RTL8139)" },*/ | |
210 | { "Delta Electronics 8139 10/100BaseTX" }, | |
211 | { "Addtron Technolgy 8139 10/100BaseTX" }, | |
212 | }; | |
213 | ||
214 | ||
215 | static struct pci_device_id netdrv_pci_tbl[] = { | |
216 | {0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, | |
217 | {0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, NETDRV_CB }, | |
218 | {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, SMC1211TX }, | |
219 | /* {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MPX5030 },*/ | |
220 | {0x1500, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DELTA8139 }, | |
221 | {0x4033, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ADDTRON8139 }, | |
222 | {0,} | |
223 | }; | |
224 | MODULE_DEVICE_TABLE (pci, netdrv_pci_tbl); | |
225 | ||
226 | ||
227 | /* The rest of these values should never change. */ | |
228 | ||
229 | /* Symbolic offsets to registers. */ | |
230 | enum NETDRV_registers { | |
231 | MAC0 = 0, /* Ethernet hardware address. */ | |
232 | MAR0 = 8, /* Multicast filter. */ | |
233 | TxStatus0 = 0x10, /* Transmit status (Four 32bit registers). */ | |
234 | TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */ | |
235 | RxBuf = 0x30, | |
236 | RxEarlyCnt = 0x34, | |
237 | RxEarlyStatus = 0x36, | |
238 | ChipCmd = 0x37, | |
239 | RxBufPtr = 0x38, | |
240 | RxBufAddr = 0x3A, | |
241 | IntrMask = 0x3C, | |
242 | IntrStatus = 0x3E, | |
243 | TxConfig = 0x40, | |
244 | ChipVersion = 0x43, | |
245 | RxConfig = 0x44, | |
246 | Timer = 0x48, /* A general-purpose counter. */ | |
247 | RxMissed = 0x4C, /* 24 bits valid, write clears. */ | |
248 | Cfg9346 = 0x50, | |
249 | Config0 = 0x51, | |
250 | Config1 = 0x52, | |
251 | FlashReg = 0x54, | |
252 | MediaStatus = 0x58, | |
253 | Config3 = 0x59, | |
254 | Config4 = 0x5A, /* absent on RTL-8139A */ | |
255 | HltClk = 0x5B, | |
256 | MultiIntr = 0x5C, | |
257 | TxSummary = 0x60, | |
258 | BasicModeCtrl = 0x62, | |
259 | BasicModeStatus = 0x64, | |
260 | NWayAdvert = 0x66, | |
261 | NWayLPAR = 0x68, | |
262 | NWayExpansion = 0x6A, | |
263 | /* Undocumented registers, but required for proper operation. */ | |
264 | FIFOTMS = 0x70, /* FIFO Control and test. */ | |
265 | CSCR = 0x74, /* Chip Status and Configuration Register. */ | |
266 | PARA78 = 0x78, | |
267 | PARA7c = 0x7c, /* Magic transceiver parameter register. */ | |
268 | Config5 = 0xD8, /* absent on RTL-8139A */ | |
269 | }; | |
270 | ||
271 | enum ClearBitMasks { | |
272 | MultiIntrClear = 0xF000, | |
273 | ChipCmdClear = 0xE2, | |
274 | Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1), | |
275 | }; | |
276 | ||
277 | enum ChipCmdBits { | |
278 | CmdReset = 0x10, | |
279 | CmdRxEnb = 0x08, | |
280 | CmdTxEnb = 0x04, | |
281 | RxBufEmpty = 0x01, | |
282 | }; | |
283 | ||
284 | /* Interrupt register bits, using my own meaningful names. */ | |
285 | enum IntrStatusBits { | |
286 | PCIErr = 0x8000, | |
287 | PCSTimeout = 0x4000, | |
288 | RxFIFOOver = 0x40, | |
289 | RxUnderrun = 0x20, | |
290 | RxOverflow = 0x10, | |
291 | TxErr = 0x08, | |
292 | TxOK = 0x04, | |
293 | RxErr = 0x02, | |
294 | RxOK = 0x01, | |
295 | }; | |
296 | enum TxStatusBits { | |
297 | TxHostOwns = 0x2000, | |
298 | TxUnderrun = 0x4000, | |
299 | TxStatOK = 0x8000, | |
300 | TxOutOfWindow = 0x20000000, | |
301 | TxAborted = 0x40000000, | |
302 | TxCarrierLost = 0x80000000, | |
303 | }; | |
304 | enum RxStatusBits { | |
305 | RxMulticast = 0x8000, | |
306 | RxPhysical = 0x4000, | |
307 | RxBroadcast = 0x2000, | |
308 | RxBadSymbol = 0x0020, | |
309 | RxRunt = 0x0010, | |
310 | RxTooLong = 0x0008, | |
311 | RxCRCErr = 0x0004, | |
312 | RxBadAlign = 0x0002, | |
313 | RxStatusOK = 0x0001, | |
314 | }; | |
315 | ||
316 | /* Bits in RxConfig. */ | |
317 | enum rx_mode_bits { | |
318 | AcceptErr = 0x20, | |
319 | AcceptRunt = 0x10, | |
320 | AcceptBroadcast = 0x08, | |
321 | AcceptMulticast = 0x04, | |
322 | AcceptMyPhys = 0x02, | |
323 | AcceptAllPhys = 0x01, | |
324 | }; | |
325 | ||
326 | /* Bits in TxConfig. */ | |
327 | enum tx_config_bits { | |
328 | TxIFG1 = (1 << 25), /* Interframe Gap Time */ | |
329 | TxIFG0 = (1 << 24), /* Enabling these bits violates IEEE 802.3 */ | |
330 | TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */ | |
331 | TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */ | |
332 | TxClearAbt = (1 << 0), /* Clear abort (WO) */ | |
333 | TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */ | |
334 | ||
335 | TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */ | |
336 | }; | |
337 | ||
338 | /* Bits in Config1 */ | |
339 | enum Config1Bits { | |
340 | Cfg1_PM_Enable = 0x01, | |
341 | Cfg1_VPD_Enable = 0x02, | |
342 | Cfg1_PIO = 0x04, | |
343 | Cfg1_MMIO = 0x08, | |
344 | Cfg1_LWAKE = 0x10, | |
345 | Cfg1_Driver_Load = 0x20, | |
346 | Cfg1_LED0 = 0x40, | |
347 | Cfg1_LED1 = 0x80, | |
348 | }; | |
349 | ||
350 | enum RxConfigBits { | |
351 | /* Early Rx threshold, none or X/16 */ | |
352 | RxCfgEarlyRxNone = 0, | |
353 | RxCfgEarlyRxShift = 24, | |
354 | ||
355 | /* rx fifo threshold */ | |
356 | RxCfgFIFOShift = 13, | |
357 | RxCfgFIFONone = (7 << RxCfgFIFOShift), | |
358 | ||
359 | /* Max DMA burst */ | |
360 | RxCfgDMAShift = 8, | |
361 | RxCfgDMAUnlimited = (7 << RxCfgDMAShift), | |
362 | ||
363 | /* rx ring buffer length */ | |
364 | RxCfgRcv8K = 0, | |
365 | RxCfgRcv16K = (1 << 11), | |
366 | RxCfgRcv32K = (1 << 12), | |
367 | RxCfgRcv64K = (1 << 11) | (1 << 12), | |
368 | ||
369 | /* Disable packet wrap at end of Rx buffer */ | |
370 | RxNoWrap = (1 << 7), | |
371 | }; | |
372 | ||
373 | ||
374 | /* Twister tuning parameters from RealTek. | |
375 | Completely undocumented, but required to tune bad links. */ | |
376 | enum CSCRBits { | |
377 | CSCR_LinkOKBit = 0x0400, | |
378 | CSCR_LinkChangeBit = 0x0800, | |
379 | CSCR_LinkStatusBits = 0x0f000, | |
380 | CSCR_LinkDownOffCmd = 0x003c0, | |
381 | CSCR_LinkDownCmd = 0x0f3c0, | |
382 | }; | |
383 | ||
384 | ||
385 | enum Cfg9346Bits { | |
386 | Cfg9346_Lock = 0x00, | |
387 | Cfg9346_Unlock = 0xC0, | |
388 | }; | |
389 | ||
390 | ||
391 | #define PARA78_default 0x78fa8388 | |
392 | #define PARA7c_default 0xcb38de43 /* param[0][3] */ | |
393 | #define PARA7c_xxx 0xcb38de43 | |
394 | static const unsigned long param[4][4] = { | |
395 | {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43}, | |
396 | {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83}, | |
397 | {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83}, | |
398 | {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83} | |
399 | }; | |
400 | ||
401 | struct ring_info { | |
402 | struct sk_buff *skb; | |
403 | dma_addr_t mapping; | |
404 | }; | |
405 | ||
406 | ||
407 | typedef enum { | |
408 | CH_8139 = 0, | |
409 | CH_8139_K, | |
410 | CH_8139A, | |
411 | CH_8139B, | |
412 | CH_8130, | |
413 | CH_8139C, | |
414 | } chip_t; | |
415 | ||
416 | ||
417 | /* directly indexed by chip_t, above */ | |
418 | const static struct { | |
419 | const char *name; | |
420 | u8 version; /* from RTL8139C docs */ | |
421 | u32 RxConfigMask; /* should clear the bits supported by this chip */ | |
422 | } rtl_chip_info[] = { | |
423 | { "RTL-8139", | |
424 | 0x40, | |
425 | 0xf0fe0040, /* XXX copied from RTL8139A, verify */ | |
426 | }, | |
427 | ||
428 | { "RTL-8139 rev K", | |
429 | 0x60, | |
430 | 0xf0fe0040, | |
431 | }, | |
432 | ||
433 | { "RTL-8139A", | |
434 | 0x70, | |
435 | 0xf0fe0040, | |
436 | }, | |
437 | ||
438 | { "RTL-8139B", | |
439 | 0x78, | |
440 | 0xf0fc0040 | |
441 | }, | |
442 | ||
443 | { "RTL-8130", | |
444 | 0x7C, | |
445 | 0xf0fe0040, /* XXX copied from RTL8139A, verify */ | |
446 | }, | |
447 | ||
448 | { "RTL-8139C", | |
449 | 0x74, | |
450 | 0xf0fc0040, /* XXX copied from RTL8139B, verify */ | |
451 | }, | |
452 | ||
453 | }; | |
454 | ||
455 | ||
456 | struct netdrv_private { | |
457 | board_t board; | |
458 | void *mmio_addr; | |
459 | int drv_flags; | |
460 | struct pci_dev *pci_dev; | |
461 | struct net_device_stats stats; | |
462 | struct timer_list timer; /* Media selection timer. */ | |
463 | unsigned char *rx_ring; | |
464 | unsigned int cur_rx; /* Index into the Rx buffer of next Rx pkt. */ | |
465 | unsigned int tx_flag; | |
466 | atomic_t cur_tx; | |
467 | atomic_t dirty_tx; | |
468 | /* The saved address of a sent-in-place packet/buffer, for skfree(). */ | |
469 | struct ring_info tx_info[NUM_TX_DESC]; | |
470 | unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */ | |
471 | unsigned char *tx_bufs; /* Tx bounce buffer region. */ | |
472 | dma_addr_t rx_ring_dma; | |
473 | dma_addr_t tx_bufs_dma; | |
474 | char phys[4]; /* MII device addresses. */ | |
475 | char twistie, twist_row, twist_col; /* Twister tune state. */ | |
476 | unsigned int full_duplex:1; /* Full-duplex operation requested. */ | |
477 | unsigned int duplex_lock:1; | |
478 | unsigned int default_port:4; /* Last dev->if_port value. */ | |
479 | unsigned int media2:4; /* Secondary monitored media port. */ | |
480 | unsigned int medialock:1; /* Don't sense media type. */ | |
481 | unsigned int mediasense:1; /* Media sensing in progress. */ | |
482 | spinlock_t lock; | |
483 | chip_t chipset; | |
484 | }; | |
485 | ||
486 | MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>"); | |
487 | MODULE_DESCRIPTION ("Skeleton for a PCI Fast Ethernet driver"); | |
488 | MODULE_LICENSE("GPL"); | |
489 | MODULE_PARM (multicast_filter_limit, "i"); | |
490 | MODULE_PARM (max_interrupt_work, "i"); | |
491 | MODULE_PARM (media, "1-" __MODULE_STRING(8) "i"); | |
492 | MODULE_PARM_DESC (multicast_filter_limit, "pci-skeleton maximum number of filtered multicast addresses"); | |
493 | MODULE_PARM_DESC (max_interrupt_work, "pci-skeleton maximum events handled per interrupt"); | |
494 | MODULE_PARM_DESC (media, "pci-skeleton: Bits 0-3: media type, bit 17: full duplex"); | |
495 | ||
496 | static int read_eeprom (void *ioaddr, int location, int addr_len); | |
497 | static int netdrv_open (struct net_device *dev); | |
498 | static int mdio_read (struct net_device *dev, int phy_id, int location); | |
499 | static void mdio_write (struct net_device *dev, int phy_id, int location, | |
500 | int val); | |
501 | static void netdrv_timer (unsigned long data); | |
502 | static void netdrv_tx_timeout (struct net_device *dev); | |
503 | static void netdrv_init_ring (struct net_device *dev); | |
504 | static int netdrv_start_xmit (struct sk_buff *skb, | |
505 | struct net_device *dev); | |
506 | static irqreturn_t netdrv_interrupt (int irq, void *dev_instance, | |
507 | struct pt_regs *regs); | |
508 | static int netdrv_close (struct net_device *dev); | |
509 | static int netdrv_ioctl (struct net_device *dev, struct ifreq *rq, int cmd); | |
510 | static struct net_device_stats *netdrv_get_stats (struct net_device *dev); | |
511 | static void netdrv_set_rx_mode (struct net_device *dev); | |
512 | static void netdrv_hw_start (struct net_device *dev); | |
513 | ||
514 | ||
515 | #ifdef USE_IO_OPS | |
516 | ||
517 | #define NETDRV_R8(reg) inb (((unsigned long)ioaddr) + (reg)) | |
518 | #define NETDRV_R16(reg) inw (((unsigned long)ioaddr) + (reg)) | |
519 | #define NETDRV_R32(reg) ((unsigned long) inl (((unsigned long)ioaddr) + (reg))) | |
520 | #define NETDRV_W8(reg, val8) outb ((val8), ((unsigned long)ioaddr) + (reg)) | |
521 | #define NETDRV_W16(reg, val16) outw ((val16), ((unsigned long)ioaddr) + (reg)) | |
522 | #define NETDRV_W32(reg, val32) outl ((val32), ((unsigned long)ioaddr) + (reg)) | |
523 | #define NETDRV_W8_F NETDRV_W8 | |
524 | #define NETDRV_W16_F NETDRV_W16 | |
525 | #define NETDRV_W32_F NETDRV_W32 | |
526 | #undef readb | |
527 | #undef readw | |
528 | #undef readl | |
529 | #undef writeb | |
530 | #undef writew | |
531 | #undef writel | |
532 | #define readb(addr) inb((unsigned long)(addr)) | |
533 | #define readw(addr) inw((unsigned long)(addr)) | |
534 | #define readl(addr) inl((unsigned long)(addr)) | |
535 | #define writeb(val,addr) outb((val),(unsigned long)(addr)) | |
536 | #define writew(val,addr) outw((val),(unsigned long)(addr)) | |
537 | #define writel(val,addr) outl((val),(unsigned long)(addr)) | |
538 | ||
539 | #else | |
540 | ||
541 | /* write MMIO register, with flush */ | |
542 | /* Flush avoids rtl8139 bug w/ posted MMIO writes */ | |
543 | #define NETDRV_W8_F(reg, val8) do { writeb ((val8), ioaddr + (reg)); readb (ioaddr + (reg)); } while (0) | |
544 | #define NETDRV_W16_F(reg, val16) do { writew ((val16), ioaddr + (reg)); readw (ioaddr + (reg)); } while (0) | |
545 | #define NETDRV_W32_F(reg, val32) do { writel ((val32), ioaddr + (reg)); readl (ioaddr + (reg)); } while (0) | |
546 | ||
547 | ||
548 | #if MMIO_FLUSH_AUDIT_COMPLETE | |
549 | ||
550 | /* write MMIO register */ | |
551 | #define NETDRV_W8(reg, val8) writeb ((val8), ioaddr + (reg)) | |
552 | #define NETDRV_W16(reg, val16) writew ((val16), ioaddr + (reg)) | |
553 | #define NETDRV_W32(reg, val32) writel ((val32), ioaddr + (reg)) | |
554 | ||
555 | #else | |
556 | ||
557 | /* write MMIO register, then flush */ | |
558 | #define NETDRV_W8 NETDRV_W8_F | |
559 | #define NETDRV_W16 NETDRV_W16_F | |
560 | #define NETDRV_W32 NETDRV_W32_F | |
561 | ||
562 | #endif /* MMIO_FLUSH_AUDIT_COMPLETE */ | |
563 | ||
564 | /* read MMIO register */ | |
565 | #define NETDRV_R8(reg) readb (ioaddr + (reg)) | |
566 | #define NETDRV_R16(reg) readw (ioaddr + (reg)) | |
567 | #define NETDRV_R32(reg) ((unsigned long) readl (ioaddr + (reg))) | |
568 | ||
569 | #endif /* USE_IO_OPS */ | |
570 | ||
571 | ||
572 | static const u16 netdrv_intr_mask = | |
573 | PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver | | |
574 | TxErr | TxOK | RxErr | RxOK; | |
575 | ||
576 | static const unsigned int netdrv_rx_config = | |
577 | RxCfgEarlyRxNone | RxCfgRcv32K | RxNoWrap | | |
578 | (RX_FIFO_THRESH << RxCfgFIFOShift) | | |
579 | (RX_DMA_BURST << RxCfgDMAShift); | |
580 | ||
581 | ||
582 | static int __devinit netdrv_init_board (struct pci_dev *pdev, | |
583 | struct net_device **dev_out, | |
584 | void **ioaddr_out) | |
585 | { | |
586 | void *ioaddr = NULL; | |
587 | struct net_device *dev; | |
588 | struct netdrv_private *tp; | |
589 | int rc, i; | |
590 | u32 pio_start, pio_end, pio_flags, pio_len; | |
591 | unsigned long mmio_start, mmio_end, mmio_flags, mmio_len; | |
592 | u32 tmp; | |
593 | ||
594 | DPRINTK ("ENTER\n"); | |
595 | ||
596 | assert (pdev != NULL); | |
597 | assert (ioaddr_out != NULL); | |
598 | ||
599 | *ioaddr_out = NULL; | |
600 | *dev_out = NULL; | |
601 | ||
602 | /* dev zeroed in alloc_etherdev */ | |
603 | dev = alloc_etherdev (sizeof (*tp)); | |
604 | if (dev == NULL) { | |
605 | printk (KERN_ERR PFX "unable to alloc new ethernet\n"); | |
606 | DPRINTK ("EXIT, returning -ENOMEM\n"); | |
607 | return -ENOMEM; | |
608 | } | |
609 | SET_MODULE_OWNER(dev); | |
610 | SET_NETDEV_DEV(dev, &pdev->dev); | |
611 | tp = dev->priv; | |
612 | ||
613 | /* enable device (incl. PCI PM wakeup), and bus-mastering */ | |
614 | rc = pci_enable_device (pdev); | |
615 | if (rc) | |
616 | goto err_out; | |
617 | ||
618 | pio_start = pci_resource_start (pdev, 0); | |
619 | pio_end = pci_resource_end (pdev, 0); | |
620 | pio_flags = pci_resource_flags (pdev, 0); | |
621 | pio_len = pci_resource_len (pdev, 0); | |
622 | ||
623 | mmio_start = pci_resource_start (pdev, 1); | |
624 | mmio_end = pci_resource_end (pdev, 1); | |
625 | mmio_flags = pci_resource_flags (pdev, 1); | |
626 | mmio_len = pci_resource_len (pdev, 1); | |
627 | ||
628 | /* set this immediately, we need to know before | |
629 | * we talk to the chip directly */ | |
630 | DPRINTK("PIO region size == 0x%02X\n", pio_len); | |
631 | DPRINTK("MMIO region size == 0x%02lX\n", mmio_len); | |
632 | ||
633 | /* make sure PCI base addr 0 is PIO */ | |
634 | if (!(pio_flags & IORESOURCE_IO)) { | |
635 | printk (KERN_ERR PFX "region #0 not a PIO resource, aborting\n"); | |
636 | rc = -ENODEV; | |
637 | goto err_out; | |
638 | } | |
639 | ||
640 | /* make sure PCI base addr 1 is MMIO */ | |
641 | if (!(mmio_flags & IORESOURCE_MEM)) { | |
642 | printk (KERN_ERR PFX "region #1 not an MMIO resource, aborting\n"); | |
643 | rc = -ENODEV; | |
644 | goto err_out; | |
645 | } | |
646 | ||
647 | /* check for weird/broken PCI region reporting */ | |
648 | if ((pio_len < NETDRV_MIN_IO_SIZE) || | |
649 | (mmio_len < NETDRV_MIN_IO_SIZE)) { | |
650 | printk (KERN_ERR PFX "Invalid PCI region size(s), aborting\n"); | |
651 | rc = -ENODEV; | |
652 | goto err_out; | |
653 | } | |
654 | ||
655 | rc = pci_request_regions (pdev, "pci-skeleton"); | |
656 | if (rc) | |
657 | goto err_out; | |
658 | ||
659 | pci_set_master (pdev); | |
660 | ||
661 | #ifdef USE_IO_OPS | |
662 | ioaddr = (void *) pio_start; | |
663 | #else | |
664 | /* ioremap MMIO region */ | |
665 | ioaddr = ioremap (mmio_start, mmio_len); | |
666 | if (ioaddr == NULL) { | |
667 | printk (KERN_ERR PFX "cannot remap MMIO, aborting\n"); | |
668 | rc = -EIO; | |
669 | goto err_out_free_res; | |
670 | } | |
671 | #endif /* USE_IO_OPS */ | |
672 | ||
673 | /* Soft reset the chip. */ | |
674 | NETDRV_W8 (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear) | CmdReset); | |
675 | ||
676 | /* Check that the chip has finished the reset. */ | |
677 | for (i = 1000; i > 0; i--) | |
678 | if ((NETDRV_R8 (ChipCmd) & CmdReset) == 0) | |
679 | break; | |
680 | else | |
681 | udelay (10); | |
682 | ||
683 | /* Bring the chip out of low-power mode. */ | |
684 | /* <insert device-specific code here> */ | |
685 | ||
686 | #ifndef USE_IO_OPS | |
687 | /* sanity checks -- ensure PIO and MMIO registers agree */ | |
688 | assert (inb (pio_start+Config0) == readb (ioaddr+Config0)); | |
689 | assert (inb (pio_start+Config1) == readb (ioaddr+Config1)); | |
690 | assert (inb (pio_start+TxConfig) == readb (ioaddr+TxConfig)); | |
691 | assert (inb (pio_start+RxConfig) == readb (ioaddr+RxConfig)); | |
692 | #endif /* !USE_IO_OPS */ | |
693 | ||
694 | /* identify chip attached to board */ | |
695 | tmp = NETDRV_R8 (ChipVersion); | |
696 | for (i = ARRAY_SIZE (rtl_chip_info) - 1; i >= 0; i--) | |
697 | if (tmp == rtl_chip_info[i].version) { | |
698 | tp->chipset = i; | |
699 | goto match; | |
700 | } | |
701 | ||
702 | /* if unknown chip, assume array element #0, original RTL-8139 in this case */ | |
703 | printk (KERN_DEBUG PFX "PCI device %s: unknown chip version, assuming RTL-8139\n", | |
704 | pci_name(pdev)); | |
705 | printk (KERN_DEBUG PFX "PCI device %s: TxConfig = 0x%lx\n", pci_name(pdev), NETDRV_R32 (TxConfig)); | |
706 | tp->chipset = 0; | |
707 | ||
708 | match: | |
709 | DPRINTK ("chipset id (%d) == index %d, '%s'\n", | |
710 | tmp, | |
711 | tp->chipset, | |
712 | rtl_chip_info[tp->chipset].name); | |
713 | ||
714 | i = register_netdev (dev); | |
715 | if (i) | |
716 | goto err_out_unmap; | |
717 | ||
718 | DPRINTK ("EXIT, returning 0\n"); | |
719 | *ioaddr_out = ioaddr; | |
720 | *dev_out = dev; | |
721 | return 0; | |
722 | ||
723 | err_out_unmap: | |
724 | #ifndef USE_IO_OPS | |
725 | iounmap(ioaddr); | |
726 | err_out_free_res: | |
727 | #endif | |
728 | pci_release_regions (pdev); | |
729 | err_out: | |
730 | free_netdev (dev); | |
731 | DPRINTK ("EXIT, returning %d\n", rc); | |
732 | return rc; | |
733 | } | |
734 | ||
735 | ||
736 | static int __devinit netdrv_init_one (struct pci_dev *pdev, | |
737 | const struct pci_device_id *ent) | |
738 | { | |
739 | struct net_device *dev = NULL; | |
740 | struct netdrv_private *tp; | |
741 | int i, addr_len, option; | |
742 | void *ioaddr = NULL; | |
743 | static int board_idx = -1; | |
744 | ||
745 | /* when built into the kernel, we only print version if device is found */ | |
746 | #ifndef MODULE | |
747 | static int printed_version; | |
748 | if (!printed_version++) | |
749 | printk(version); | |
750 | #endif | |
751 | ||
752 | DPRINTK ("ENTER\n"); | |
753 | ||
754 | assert (pdev != NULL); | |
755 | assert (ent != NULL); | |
756 | ||
757 | board_idx++; | |
758 | ||
759 | i = netdrv_init_board (pdev, &dev, &ioaddr); | |
760 | if (i < 0) { | |
761 | DPRINTK ("EXIT, returning %d\n", i); | |
762 | return i; | |
763 | } | |
764 | ||
765 | tp = dev->priv; | |
766 | ||
767 | assert (ioaddr != NULL); | |
768 | assert (dev != NULL); | |
769 | assert (tp != NULL); | |
770 | ||
771 | addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6; | |
772 | for (i = 0; i < 3; i++) | |
773 | ((u16 *) (dev->dev_addr))[i] = | |
774 | le16_to_cpu (read_eeprom (ioaddr, i + 7, addr_len)); | |
775 | ||
776 | /* The Rtl8139-specific entries in the device structure. */ | |
777 | dev->open = netdrv_open; | |
778 | dev->hard_start_xmit = netdrv_start_xmit; | |
779 | dev->stop = netdrv_close; | |
780 | dev->get_stats = netdrv_get_stats; | |
781 | dev->set_multicast_list = netdrv_set_rx_mode; | |
782 | dev->do_ioctl = netdrv_ioctl; | |
783 | dev->tx_timeout = netdrv_tx_timeout; | |
784 | dev->watchdog_timeo = TX_TIMEOUT; | |
785 | ||
786 | dev->irq = pdev->irq; | |
787 | dev->base_addr = (unsigned long) ioaddr; | |
788 | ||
789 | /* dev->priv/tp zeroed and aligned in alloc_etherdev */ | |
790 | tp = dev->priv; | |
791 | ||
792 | /* note: tp->chipset set in netdrv_init_board */ | |
793 | tp->drv_flags = PCI_COMMAND_IO | PCI_COMMAND_MEMORY | | |
794 | PCI_COMMAND_MASTER | NETDRV_CAPS; | |
795 | tp->pci_dev = pdev; | |
796 | tp->board = ent->driver_data; | |
797 | tp->mmio_addr = ioaddr; | |
798 | spin_lock_init(&tp->lock); | |
799 | ||
800 | pci_set_drvdata(pdev, dev); | |
801 | ||
802 | tp->phys[0] = 32; | |
803 | ||
804 | printk (KERN_INFO "%s: %s at 0x%lx, " | |
805 | "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, " | |
806 | "IRQ %d\n", | |
807 | dev->name, | |
808 | board_info[ent->driver_data].name, | |
809 | dev->base_addr, | |
810 | dev->dev_addr[0], dev->dev_addr[1], | |
811 | dev->dev_addr[2], dev->dev_addr[3], | |
812 | dev->dev_addr[4], dev->dev_addr[5], | |
813 | dev->irq); | |
814 | ||
815 | printk (KERN_DEBUG "%s: Identified 8139 chip type '%s'\n", | |
816 | dev->name, rtl_chip_info[tp->chipset].name); | |
817 | ||
818 | /* Put the chip into low-power mode. */ | |
819 | NETDRV_W8_F (Cfg9346, Cfg9346_Unlock); | |
820 | ||
821 | /* The lower four bits are the media type. */ | |
822 | option = (board_idx > 7) ? 0 : media[board_idx]; | |
823 | if (option > 0) { | |
824 | tp->full_duplex = (option & 0x200) ? 1 : 0; | |
825 | tp->default_port = option & 15; | |
826 | if (tp->default_port) | |
827 | tp->medialock = 1; | |
828 | } | |
829 | ||
830 | if (tp->full_duplex) { | |
831 | printk (KERN_INFO | |
832 | "%s: Media type forced to Full Duplex.\n", | |
833 | dev->name); | |
834 | mdio_write (dev, tp->phys[0], MII_ADVERTISE, ADVERTISE_FULL); | |
835 | tp->duplex_lock = 1; | |
836 | } | |
837 | ||
838 | DPRINTK ("EXIT - returning 0\n"); | |
839 | return 0; | |
840 | } | |
841 | ||
842 | ||
843 | static void __devexit netdrv_remove_one (struct pci_dev *pdev) | |
844 | { | |
845 | struct net_device *dev = pci_get_drvdata (pdev); | |
846 | struct netdrv_private *np; | |
847 | ||
848 | DPRINTK ("ENTER\n"); | |
849 | ||
850 | assert (dev != NULL); | |
851 | ||
852 | np = dev->priv; | |
853 | assert (np != NULL); | |
854 | ||
855 | unregister_netdev (dev); | |
856 | ||
857 | #ifndef USE_IO_OPS | |
858 | iounmap (np->mmio_addr); | |
859 | #endif /* !USE_IO_OPS */ | |
860 | ||
861 | pci_release_regions (pdev); | |
862 | ||
863 | free_netdev (dev); | |
864 | ||
865 | pci_set_drvdata (pdev, NULL); | |
866 | ||
867 | pci_disable_device (pdev); | |
868 | ||
869 | DPRINTK ("EXIT\n"); | |
870 | } | |
871 | ||
872 | ||
873 | /* Serial EEPROM section. */ | |
874 | ||
875 | /* EEPROM_Ctrl bits. */ | |
876 | #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */ | |
877 | #define EE_CS 0x08 /* EEPROM chip select. */ | |
878 | #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */ | |
879 | #define EE_WRITE_0 0x00 | |
880 | #define EE_WRITE_1 0x02 | |
881 | #define EE_DATA_READ 0x01 /* EEPROM chip data out. */ | |
882 | #define EE_ENB (0x80 | EE_CS) | |
883 | ||
884 | /* Delay between EEPROM clock transitions. | |
885 | No extra delay is needed with 33Mhz PCI, but 66Mhz may change this. | |
886 | */ | |
887 | ||
888 | #define eeprom_delay() readl(ee_addr) | |
889 | ||
890 | /* The EEPROM commands include the alway-set leading bit. */ | |
891 | #define EE_WRITE_CMD (5) | |
892 | #define EE_READ_CMD (6) | |
893 | #define EE_ERASE_CMD (7) | |
894 | ||
895 | static int __devinit read_eeprom (void *ioaddr, int location, int addr_len) | |
896 | { | |
897 | int i; | |
898 | unsigned retval = 0; | |
899 | void *ee_addr = ioaddr + Cfg9346; | |
900 | int read_cmd = location | (EE_READ_CMD << addr_len); | |
901 | ||
902 | DPRINTK ("ENTER\n"); | |
903 | ||
904 | writeb (EE_ENB & ~EE_CS, ee_addr); | |
905 | writeb (EE_ENB, ee_addr); | |
906 | eeprom_delay (); | |
907 | ||
908 | /* Shift the read command bits out. */ | |
909 | for (i = 4 + addr_len; i >= 0; i--) { | |
910 | int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0; | |
911 | writeb (EE_ENB | dataval, ee_addr); | |
912 | eeprom_delay (); | |
913 | writeb (EE_ENB | dataval | EE_SHIFT_CLK, ee_addr); | |
914 | eeprom_delay (); | |
915 | } | |
916 | writeb (EE_ENB, ee_addr); | |
917 | eeprom_delay (); | |
918 | ||
919 | for (i = 16; i > 0; i--) { | |
920 | writeb (EE_ENB | EE_SHIFT_CLK, ee_addr); | |
921 | eeprom_delay (); | |
922 | retval = | |
923 | (retval << 1) | ((readb (ee_addr) & EE_DATA_READ) ? 1 : | |
924 | 0); | |
925 | writeb (EE_ENB, ee_addr); | |
926 | eeprom_delay (); | |
927 | } | |
928 | ||
929 | /* Terminate the EEPROM access. */ | |
930 | writeb (~EE_CS, ee_addr); | |
931 | eeprom_delay (); | |
932 | ||
933 | DPRINTK ("EXIT - returning %d\n", retval); | |
934 | return retval; | |
935 | } | |
936 | ||
937 | /* MII serial management: mostly bogus for now. */ | |
938 | /* Read and write the MII management registers using software-generated | |
939 | serial MDIO protocol. | |
940 | The maximum data clock rate is 2.5 Mhz. The minimum timing is usually | |
941 | met by back-to-back PCI I/O cycles, but we insert a delay to avoid | |
942 | "overclocking" issues. */ | |
943 | #define MDIO_DIR 0x80 | |
944 | #define MDIO_DATA_OUT 0x04 | |
945 | #define MDIO_DATA_IN 0x02 | |
946 | #define MDIO_CLK 0x01 | |
947 | #define MDIO_WRITE0 (MDIO_DIR) | |
948 | #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT) | |
949 | ||
950 | #define mdio_delay() readb(mdio_addr) | |
951 | ||
952 | ||
953 | static char mii_2_8139_map[8] = { | |
954 | BasicModeCtrl, | |
955 | BasicModeStatus, | |
956 | 0, | |
957 | 0, | |
958 | NWayAdvert, | |
959 | NWayLPAR, | |
960 | NWayExpansion, | |
961 | 0 | |
962 | }; | |
963 | ||
964 | ||
965 | /* Syncronize the MII management interface by shifting 32 one bits out. */ | |
966 | static void mdio_sync (void *mdio_addr) | |
967 | { | |
968 | int i; | |
969 | ||
970 | DPRINTK ("ENTER\n"); | |
971 | ||
972 | for (i = 32; i >= 0; i--) { | |
973 | writeb (MDIO_WRITE1, mdio_addr); | |
974 | mdio_delay (); | |
975 | writeb (MDIO_WRITE1 | MDIO_CLK, mdio_addr); | |
976 | mdio_delay (); | |
977 | } | |
978 | ||
979 | DPRINTK ("EXIT\n"); | |
980 | } | |
981 | ||
982 | ||
983 | static int mdio_read (struct net_device *dev, int phy_id, int location) | |
984 | { | |
985 | struct netdrv_private *tp = dev->priv; | |
986 | void *mdio_addr = tp->mmio_addr + Config4; | |
987 | int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location; | |
988 | int retval = 0; | |
989 | int i; | |
990 | ||
991 | DPRINTK ("ENTER\n"); | |
992 | ||
993 | if (phy_id > 31) { /* Really a 8139. Use internal registers. */ | |
994 | DPRINTK ("EXIT after directly using 8139 internal regs\n"); | |
995 | return location < 8 && mii_2_8139_map[location] ? | |
996 | readw (tp->mmio_addr + mii_2_8139_map[location]) : 0; | |
997 | } | |
998 | mdio_sync (mdio_addr); | |
999 | /* Shift the read command bits out. */ | |
1000 | for (i = 15; i >= 0; i--) { | |
1001 | int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0; | |
1002 | ||
1003 | writeb (MDIO_DIR | dataval, mdio_addr); | |
1004 | mdio_delay (); | |
1005 | writeb (MDIO_DIR | dataval | MDIO_CLK, mdio_addr); | |
1006 | mdio_delay (); | |
1007 | } | |
1008 | ||
1009 | /* Read the two transition, 16 data, and wire-idle bits. */ | |
1010 | for (i = 19; i > 0; i--) { | |
1011 | writeb (0, mdio_addr); | |
1012 | mdio_delay (); | |
1013 | retval = | |
1014 | (retval << 1) | ((readb (mdio_addr) & MDIO_DATA_IN) ? 1 | |
1015 | : 0); | |
1016 | writeb (MDIO_CLK, mdio_addr); | |
1017 | mdio_delay (); | |
1018 | } | |
1019 | ||
1020 | DPRINTK ("EXIT, returning %d\n", (retval >> 1) & 0xffff); | |
1021 | return (retval >> 1) & 0xffff; | |
1022 | } | |
1023 | ||
1024 | ||
1025 | static void mdio_write (struct net_device *dev, int phy_id, int location, | |
1026 | int value) | |
1027 | { | |
1028 | struct netdrv_private *tp = dev->priv; | |
1029 | void *mdio_addr = tp->mmio_addr + Config4; | |
1030 | int mii_cmd = | |
1031 | (0x5002 << 16) | (phy_id << 23) | (location << 18) | value; | |
1032 | int i; | |
1033 | ||
1034 | DPRINTK ("ENTER\n"); | |
1035 | ||
1036 | if (phy_id > 31) { /* Really a 8139. Use internal registers. */ | |
1037 | if (location < 8 && mii_2_8139_map[location]) { | |
1038 | writew (value, | |
1039 | tp->mmio_addr + mii_2_8139_map[location]); | |
1040 | readw (tp->mmio_addr + mii_2_8139_map[location]); | |
1041 | } | |
1042 | DPRINTK ("EXIT after directly using 8139 internal regs\n"); | |
1043 | return; | |
1044 | } | |
1045 | mdio_sync (mdio_addr); | |
1046 | ||
1047 | /* Shift the command bits out. */ | |
1048 | for (i = 31; i >= 0; i--) { | |
1049 | int dataval = | |
1050 | (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; | |
1051 | writeb (dataval, mdio_addr); | |
1052 | mdio_delay (); | |
1053 | writeb (dataval | MDIO_CLK, mdio_addr); | |
1054 | mdio_delay (); | |
1055 | } | |
1056 | ||
1057 | /* Clear out extra bits. */ | |
1058 | for (i = 2; i > 0; i--) { | |
1059 | writeb (0, mdio_addr); | |
1060 | mdio_delay (); | |
1061 | writeb (MDIO_CLK, mdio_addr); | |
1062 | mdio_delay (); | |
1063 | } | |
1064 | ||
1065 | DPRINTK ("EXIT\n"); | |
1066 | } | |
1067 | ||
1068 | ||
1069 | static int netdrv_open (struct net_device *dev) | |
1070 | { | |
1071 | struct netdrv_private *tp = dev->priv; | |
1072 | int retval; | |
1073 | #ifdef NETDRV_DEBUG | |
1074 | void *ioaddr = tp->mmio_addr; | |
1075 | #endif | |
1076 | ||
1077 | DPRINTK ("ENTER\n"); | |
1078 | ||
1079 | retval = request_irq (dev->irq, netdrv_interrupt, SA_SHIRQ, dev->name, dev); | |
1080 | if (retval) { | |
1081 | DPRINTK ("EXIT, returning %d\n", retval); | |
1082 | return retval; | |
1083 | } | |
1084 | ||
1085 | tp->tx_bufs = pci_alloc_consistent(tp->pci_dev, TX_BUF_TOT_LEN, | |
1086 | &tp->tx_bufs_dma); | |
1087 | tp->rx_ring = pci_alloc_consistent(tp->pci_dev, RX_BUF_TOT_LEN, | |
1088 | &tp->rx_ring_dma); | |
1089 | if (tp->tx_bufs == NULL || tp->rx_ring == NULL) { | |
1090 | free_irq(dev->irq, dev); | |
1091 | ||
1092 | if (tp->tx_bufs) | |
1093 | pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN, | |
1094 | tp->tx_bufs, tp->tx_bufs_dma); | |
1095 | if (tp->rx_ring) | |
1096 | pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN, | |
1097 | tp->rx_ring, tp->rx_ring_dma); | |
1098 | ||
1099 | DPRINTK ("EXIT, returning -ENOMEM\n"); | |
1100 | return -ENOMEM; | |
1101 | ||
1102 | } | |
1103 | ||
1104 | tp->full_duplex = tp->duplex_lock; | |
1105 | tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000; | |
1106 | ||
1107 | netdrv_init_ring (dev); | |
1108 | netdrv_hw_start (dev); | |
1109 | ||
1110 | DPRINTK ("%s: netdrv_open() ioaddr %#lx IRQ %d" | |
1111 | " GP Pins %2.2x %s-duplex.\n", | |
1112 | dev->name, pci_resource_start (tp->pci_dev, 1), | |
1113 | dev->irq, NETDRV_R8 (MediaStatus), | |
1114 | tp->full_duplex ? "full" : "half"); | |
1115 | ||
1116 | /* Set the timer to switch to check for link beat and perhaps switch | |
1117 | to an alternate media type. */ | |
1118 | init_timer (&tp->timer); | |
1119 | tp->timer.expires = jiffies + 3 * HZ; | |
1120 | tp->timer.data = (unsigned long) dev; | |
1121 | tp->timer.function = &netdrv_timer; | |
1122 | add_timer (&tp->timer); | |
1123 | ||
1124 | DPRINTK ("EXIT, returning 0\n"); | |
1125 | return 0; | |
1126 | } | |
1127 | ||
1128 | ||
1129 | /* Start the hardware at open or resume. */ | |
1130 | static void netdrv_hw_start (struct net_device *dev) | |
1131 | { | |
1132 | struct netdrv_private *tp = dev->priv; | |
1133 | void *ioaddr = tp->mmio_addr; | |
1134 | u32 i; | |
1135 | ||
1136 | DPRINTK ("ENTER\n"); | |
1137 | ||
1138 | /* Soft reset the chip. */ | |
1139 | NETDRV_W8 (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear) | CmdReset); | |
1140 | udelay (100); | |
1141 | ||
1142 | /* Check that the chip has finished the reset. */ | |
1143 | for (i = 1000; i > 0; i--) | |
1144 | if ((NETDRV_R8 (ChipCmd) & CmdReset) == 0) | |
1145 | break; | |
1146 | ||
1147 | /* Restore our idea of the MAC address. */ | |
1148 | NETDRV_W32_F (MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0))); | |
1149 | NETDRV_W32_F (MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4))); | |
1150 | ||
1151 | /* Must enable Tx/Rx before setting transfer thresholds! */ | |
1152 | NETDRV_W8_F (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear) | | |
1153 | CmdRxEnb | CmdTxEnb); | |
1154 | ||
1155 | i = netdrv_rx_config | | |
1156 | (NETDRV_R32 (RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask); | |
1157 | NETDRV_W32_F (RxConfig, i); | |
1158 | ||
1159 | /* Check this value: the documentation for IFG contradicts ifself. */ | |
1160 | NETDRV_W32 (TxConfig, (TX_DMA_BURST << TxDMAShift)); | |
1161 | ||
1162 | /* unlock Config[01234] and BMCR register writes */ | |
1163 | NETDRV_W8_F (Cfg9346, Cfg9346_Unlock); | |
1164 | udelay (10); | |
1165 | ||
1166 | tp->cur_rx = 0; | |
1167 | ||
1168 | /* Lock Config[01234] and BMCR register writes */ | |
1169 | NETDRV_W8_F (Cfg9346, Cfg9346_Lock); | |
1170 | udelay (10); | |
1171 | ||
1172 | /* init Rx ring buffer DMA address */ | |
1173 | NETDRV_W32_F (RxBuf, tp->rx_ring_dma); | |
1174 | ||
1175 | /* init Tx buffer DMA addresses */ | |
1176 | for (i = 0; i < NUM_TX_DESC; i++) | |
1177 | NETDRV_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs)); | |
1178 | ||
1179 | NETDRV_W32_F (RxMissed, 0); | |
1180 | ||
1181 | netdrv_set_rx_mode (dev); | |
1182 | ||
1183 | /* no early-rx interrupts */ | |
1184 | NETDRV_W16 (MultiIntr, NETDRV_R16 (MultiIntr) & MultiIntrClear); | |
1185 | ||
1186 | /* make sure RxTx has started */ | |
1187 | NETDRV_W8_F (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear) | | |
1188 | CmdRxEnb | CmdTxEnb); | |
1189 | ||
1190 | /* Enable all known interrupts by setting the interrupt mask. */ | |
1191 | NETDRV_W16_F (IntrMask, netdrv_intr_mask); | |
1192 | ||
1193 | netif_start_queue (dev); | |
1194 | ||
1195 | DPRINTK ("EXIT\n"); | |
1196 | } | |
1197 | ||
1198 | ||
1199 | /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ | |
1200 | static void netdrv_init_ring (struct net_device *dev) | |
1201 | { | |
1202 | struct netdrv_private *tp = dev->priv; | |
1203 | int i; | |
1204 | ||
1205 | DPRINTK ("ENTER\n"); | |
1206 | ||
1207 | tp->cur_rx = 0; | |
1208 | atomic_set (&tp->cur_tx, 0); | |
1209 | atomic_set (&tp->dirty_tx, 0); | |
1210 | ||
1211 | for (i = 0; i < NUM_TX_DESC; i++) { | |
1212 | tp->tx_info[i].skb = NULL; | |
1213 | tp->tx_info[i].mapping = 0; | |
1214 | tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE]; | |
1215 | } | |
1216 | ||
1217 | DPRINTK ("EXIT\n"); | |
1218 | } | |
1219 | ||
1220 | ||
1221 | static void netdrv_timer (unsigned long data) | |
1222 | { | |
1223 | struct net_device *dev = (struct net_device *) data; | |
1224 | struct netdrv_private *tp = dev->priv; | |
1225 | void *ioaddr = tp->mmio_addr; | |
1226 | int next_tick = 60 * HZ; | |
1227 | int mii_lpa; | |
1228 | ||
1229 | mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA); | |
1230 | ||
1231 | if (!tp->duplex_lock && mii_lpa != 0xffff) { | |
1232 | int duplex = (mii_lpa & LPA_100FULL) | |
1233 | || (mii_lpa & 0x01C0) == 0x0040; | |
1234 | if (tp->full_duplex != duplex) { | |
1235 | tp->full_duplex = duplex; | |
1236 | printk (KERN_INFO | |
1237 | "%s: Setting %s-duplex based on MII #%d link" | |
1238 | " partner ability of %4.4x.\n", dev->name, | |
1239 | tp->full_duplex ? "full" : "half", | |
1240 | tp->phys[0], mii_lpa); | |
1241 | NETDRV_W8 (Cfg9346, Cfg9346_Unlock); | |
1242 | NETDRV_W8 (Config1, tp->full_duplex ? 0x60 : 0x20); | |
1243 | NETDRV_W8 (Cfg9346, Cfg9346_Lock); | |
1244 | } | |
1245 | } | |
1246 | ||
1247 | DPRINTK ("%s: Media selection tick, Link partner %4.4x.\n", | |
1248 | dev->name, NETDRV_R16 (NWayLPAR)); | |
1249 | DPRINTK ("%s: Other registers are IntMask %4.4x IntStatus %4.4x" | |
1250 | " RxStatus %4.4x.\n", dev->name, | |
1251 | NETDRV_R16 (IntrMask), | |
1252 | NETDRV_R16 (IntrStatus), | |
1253 | NETDRV_R32 (RxEarlyStatus)); | |
1254 | DPRINTK ("%s: Chip config %2.2x %2.2x.\n", | |
1255 | dev->name, NETDRV_R8 (Config0), | |
1256 | NETDRV_R8 (Config1)); | |
1257 | ||
1258 | tp->timer.expires = jiffies + next_tick; | |
1259 | add_timer (&tp->timer); | |
1260 | } | |
1261 | ||
1262 | ||
1263 | static void netdrv_tx_clear (struct netdrv_private *tp) | |
1264 | { | |
1265 | int i; | |
1266 | ||
1267 | atomic_set (&tp->cur_tx, 0); | |
1268 | atomic_set (&tp->dirty_tx, 0); | |
1269 | ||
1270 | /* Dump the unsent Tx packets. */ | |
1271 | for (i = 0; i < NUM_TX_DESC; i++) { | |
1272 | struct ring_info *rp = &tp->tx_info[i]; | |
1273 | if (rp->mapping != 0) { | |
1274 | pci_unmap_single (tp->pci_dev, rp->mapping, | |
1275 | rp->skb->len, PCI_DMA_TODEVICE); | |
1276 | rp->mapping = 0; | |
1277 | } | |
1278 | if (rp->skb) { | |
1279 | dev_kfree_skb (rp->skb); | |
1280 | rp->skb = NULL; | |
1281 | tp->stats.tx_dropped++; | |
1282 | } | |
1283 | } | |
1284 | } | |
1285 | ||
1286 | ||
1287 | static void netdrv_tx_timeout (struct net_device *dev) | |
1288 | { | |
1289 | struct netdrv_private *tp = dev->priv; | |
1290 | void *ioaddr = tp->mmio_addr; | |
1291 | int i; | |
1292 | u8 tmp8; | |
1293 | unsigned long flags; | |
1294 | ||
1295 | DPRINTK ("%s: Transmit timeout, status %2.2x %4.4x " | |
1296 | "media %2.2x.\n", dev->name, | |
1297 | NETDRV_R8 (ChipCmd), | |
1298 | NETDRV_R16 (IntrStatus), | |
1299 | NETDRV_R8 (MediaStatus)); | |
1300 | ||
1301 | /* disable Tx ASAP, if not already */ | |
1302 | tmp8 = NETDRV_R8 (ChipCmd); | |
1303 | if (tmp8 & CmdTxEnb) | |
1304 | NETDRV_W8 (ChipCmd, tmp8 & ~CmdTxEnb); | |
1305 | ||
1306 | /* Disable interrupts by clearing the interrupt mask. */ | |
1307 | NETDRV_W16 (IntrMask, 0x0000); | |
1308 | ||
1309 | /* Emit info to figure out what went wrong. */ | |
1310 | printk (KERN_DEBUG "%s: Tx queue start entry %d dirty entry %d.\n", | |
1311 | dev->name, atomic_read (&tp->cur_tx), | |
1312 | atomic_read (&tp->dirty_tx)); | |
1313 | for (i = 0; i < NUM_TX_DESC; i++) | |
1314 | printk (KERN_DEBUG "%s: Tx descriptor %d is %8.8lx.%s\n", | |
1315 | dev->name, i, NETDRV_R32 (TxStatus0 + (i * 4)), | |
1316 | i == atomic_read (&tp->dirty_tx) % NUM_TX_DESC ? | |
1317 | " (queue head)" : ""); | |
1318 | ||
1319 | /* Stop a shared interrupt from scavenging while we are. */ | |
1320 | spin_lock_irqsave (&tp->lock, flags); | |
1321 | ||
1322 | netdrv_tx_clear (tp); | |
1323 | ||
1324 | spin_unlock_irqrestore (&tp->lock, flags); | |
1325 | ||
1326 | /* ...and finally, reset everything */ | |
1327 | netdrv_hw_start (dev); | |
1328 | ||
1329 | netif_wake_queue (dev); | |
1330 | } | |
1331 | ||
1332 | ||
1333 | ||
1334 | static int netdrv_start_xmit (struct sk_buff *skb, struct net_device *dev) | |
1335 | { | |
1336 | struct netdrv_private *tp = dev->priv; | |
1337 | void *ioaddr = tp->mmio_addr; | |
1338 | int entry; | |
1339 | ||
1340 | /* Calculate the next Tx descriptor entry. */ | |
1341 | entry = atomic_read (&tp->cur_tx) % NUM_TX_DESC; | |
1342 | ||
1343 | assert (tp->tx_info[entry].skb == NULL); | |
1344 | assert (tp->tx_info[entry].mapping == 0); | |
1345 | ||
1346 | tp->tx_info[entry].skb = skb; | |
1347 | /* tp->tx_info[entry].mapping = 0; */ | |
1348 | memcpy (tp->tx_buf[entry], skb->data, skb->len); | |
1349 | ||
1350 | /* Note: the chip doesn't have auto-pad! */ | |
1351 | NETDRV_W32 (TxStatus0 + (entry * sizeof(u32)), | |
1352 | tp->tx_flag | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN)); | |
1353 | ||
1354 | dev->trans_start = jiffies; | |
1355 | atomic_inc (&tp->cur_tx); | |
1356 | if ((atomic_read (&tp->cur_tx) - atomic_read (&tp->dirty_tx)) >= NUM_TX_DESC) | |
1357 | netif_stop_queue (dev); | |
1358 | ||
1359 | DPRINTK ("%s: Queued Tx packet at %p size %u to slot %d.\n", | |
1360 | dev->name, skb->data, skb->len, entry); | |
1361 | ||
1362 | return 0; | |
1363 | } | |
1364 | ||
1365 | ||
1366 | static void netdrv_tx_interrupt (struct net_device *dev, | |
1367 | struct netdrv_private *tp, | |
1368 | void *ioaddr) | |
1369 | { | |
1370 | int cur_tx, dirty_tx, tx_left; | |
1371 | ||
1372 | assert (dev != NULL); | |
1373 | assert (tp != NULL); | |
1374 | assert (ioaddr != NULL); | |
1375 | ||
1376 | dirty_tx = atomic_read (&tp->dirty_tx); | |
1377 | ||
1378 | cur_tx = atomic_read (&tp->cur_tx); | |
1379 | tx_left = cur_tx - dirty_tx; | |
1380 | while (tx_left > 0) { | |
1381 | int entry = dirty_tx % NUM_TX_DESC; | |
1382 | int txstatus; | |
1383 | ||
1384 | txstatus = NETDRV_R32 (TxStatus0 + (entry * sizeof (u32))); | |
1385 | ||
1386 | if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted))) | |
1387 | break; /* It still hasn't been Txed */ | |
1388 | ||
1389 | /* Note: TxCarrierLost is always asserted at 100mbps. */ | |
1390 | if (txstatus & (TxOutOfWindow | TxAborted)) { | |
1391 | /* There was an major error, log it. */ | |
1392 | DPRINTK ("%s: Transmit error, Tx status %8.8x.\n", | |
1393 | dev->name, txstatus); | |
1394 | tp->stats.tx_errors++; | |
1395 | if (txstatus & TxAborted) { | |
1396 | tp->stats.tx_aborted_errors++; | |
1397 | NETDRV_W32 (TxConfig, TxClearAbt | (TX_DMA_BURST << TxDMAShift)); | |
1398 | } | |
1399 | if (txstatus & TxCarrierLost) | |
1400 | tp->stats.tx_carrier_errors++; | |
1401 | if (txstatus & TxOutOfWindow) | |
1402 | tp->stats.tx_window_errors++; | |
1403 | } else { | |
1404 | if (txstatus & TxUnderrun) { | |
1405 | /* Add 64 to the Tx FIFO threshold. */ | |
1406 | if (tp->tx_flag < 0x00300000) | |
1407 | tp->tx_flag += 0x00020000; | |
1408 | tp->stats.tx_fifo_errors++; | |
1409 | } | |
1410 | tp->stats.collisions += (txstatus >> 24) & 15; | |
1411 | tp->stats.tx_bytes += txstatus & 0x7ff; | |
1412 | tp->stats.tx_packets++; | |
1413 | } | |
1414 | ||
1415 | /* Free the original skb. */ | |
1416 | if (tp->tx_info[entry].mapping != 0) { | |
1417 | pci_unmap_single(tp->pci_dev, | |
1418 | tp->tx_info[entry].mapping, | |
1419 | tp->tx_info[entry].skb->len, | |
1420 | PCI_DMA_TODEVICE); | |
1421 | tp->tx_info[entry].mapping = 0; | |
1422 | } | |
1423 | dev_kfree_skb_irq (tp->tx_info[entry].skb); | |
1424 | tp->tx_info[entry].skb = NULL; | |
1425 | dirty_tx++; | |
1426 | if (dirty_tx < 0) { /* handle signed int overflow */ | |
1427 | atomic_sub (cur_tx, &tp->cur_tx); /* XXX racy? */ | |
1428 | dirty_tx = cur_tx - tx_left + 1; | |
1429 | } | |
1430 | if (netif_queue_stopped (dev)) | |
1431 | netif_wake_queue (dev); | |
1432 | ||
1433 | cur_tx = atomic_read (&tp->cur_tx); | |
1434 | tx_left = cur_tx - dirty_tx; | |
1435 | ||
1436 | } | |
1437 | ||
1438 | #ifndef NETDRV_NDEBUG | |
1439 | if (atomic_read (&tp->cur_tx) - dirty_tx > NUM_TX_DESC) { | |
1440 | printk (KERN_ERR | |
1441 | "%s: Out-of-sync dirty pointer, %d vs. %d.\n", | |
1442 | dev->name, dirty_tx, atomic_read (&tp->cur_tx)); | |
1443 | dirty_tx += NUM_TX_DESC; | |
1444 | } | |
1445 | #endif /* NETDRV_NDEBUG */ | |
1446 | ||
1447 | atomic_set (&tp->dirty_tx, dirty_tx); | |
1448 | } | |
1449 | ||
1450 | ||
1451 | /* TODO: clean this up! Rx reset need not be this intensive */ | |
1452 | static void netdrv_rx_err (u32 rx_status, struct net_device *dev, | |
1453 | struct netdrv_private *tp, void *ioaddr) | |
1454 | { | |
1455 | u8 tmp8; | |
1456 | int tmp_work = 1000; | |
1457 | ||
1458 | DPRINTK ("%s: Ethernet frame had errors, status %8.8x.\n", | |
1459 | dev->name, rx_status); | |
1460 | if (rx_status & RxTooLong) { | |
1461 | DPRINTK ("%s: Oversized Ethernet frame, status %4.4x!\n", | |
1462 | dev->name, rx_status); | |
1463 | /* A.C.: The chip hangs here. */ | |
1464 | } | |
1465 | tp->stats.rx_errors++; | |
1466 | if (rx_status & (RxBadSymbol | RxBadAlign)) | |
1467 | tp->stats.rx_frame_errors++; | |
1468 | if (rx_status & (RxRunt | RxTooLong)) | |
1469 | tp->stats.rx_length_errors++; | |
1470 | if (rx_status & RxCRCErr) | |
1471 | tp->stats.rx_crc_errors++; | |
1472 | /* Reset the receiver, based on RealTek recommendation. (Bug?) */ | |
1473 | tp->cur_rx = 0; | |
1474 | ||
1475 | /* disable receive */ | |
1476 | tmp8 = NETDRV_R8 (ChipCmd) & ChipCmdClear; | |
1477 | NETDRV_W8_F (ChipCmd, tmp8 | CmdTxEnb); | |
1478 | ||
1479 | /* A.C.: Reset the multicast list. */ | |
1480 | netdrv_set_rx_mode (dev); | |
1481 | ||
1482 | /* XXX potentially temporary hack to | |
1483 | * restart hung receiver */ | |
1484 | while (--tmp_work > 0) { | |
1485 | tmp8 = NETDRV_R8 (ChipCmd); | |
1486 | if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb)) | |
1487 | break; | |
1488 | NETDRV_W8_F (ChipCmd, | |
1489 | (tmp8 & ChipCmdClear) | CmdRxEnb | CmdTxEnb); | |
1490 | } | |
1491 | ||
1492 | /* G.S.: Re-enable receiver */ | |
1493 | /* XXX temporary hack to work around receiver hang */ | |
1494 | netdrv_set_rx_mode (dev); | |
1495 | ||
1496 | if (tmp_work <= 0) | |
1497 | printk (KERN_WARNING PFX "tx/rx enable wait too long\n"); | |
1498 | } | |
1499 | ||
1500 | ||
1501 | /* The data sheet doesn't describe the Rx ring at all, so I'm guessing at the | |
1502 | field alignments and semantics. */ | |
1503 | static void netdrv_rx_interrupt (struct net_device *dev, | |
1504 | struct netdrv_private *tp, void *ioaddr) | |
1505 | { | |
1506 | unsigned char *rx_ring; | |
1507 | u16 cur_rx; | |
1508 | ||
1509 | assert (dev != NULL); | |
1510 | assert (tp != NULL); | |
1511 | assert (ioaddr != NULL); | |
1512 | ||
1513 | rx_ring = tp->rx_ring; | |
1514 | cur_rx = tp->cur_rx; | |
1515 | ||
1516 | DPRINTK ("%s: In netdrv_rx(), current %4.4x BufAddr %4.4x," | |
1517 | " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx, | |
1518 | NETDRV_R16 (RxBufAddr), | |
1519 | NETDRV_R16 (RxBufPtr), NETDRV_R8 (ChipCmd)); | |
1520 | ||
1521 | while ((NETDRV_R8 (ChipCmd) & RxBufEmpty) == 0) { | |
1522 | int ring_offset = cur_rx % RX_BUF_LEN; | |
1523 | u32 rx_status; | |
1524 | unsigned int rx_size; | |
1525 | unsigned int pkt_size; | |
1526 | struct sk_buff *skb; | |
1527 | ||
1528 | /* read size+status of next frame from DMA ring buffer */ | |
1529 | rx_status = le32_to_cpu (*(u32 *) (rx_ring + ring_offset)); | |
1530 | rx_size = rx_status >> 16; | |
1531 | pkt_size = rx_size - 4; | |
1532 | ||
1533 | DPRINTK ("%s: netdrv_rx() status %4.4x, size %4.4x," | |
1534 | " cur %4.4x.\n", dev->name, rx_status, | |
1535 | rx_size, cur_rx); | |
1536 | #if NETDRV_DEBUG > 2 | |
1537 | { | |
1538 | int i; | |
1539 | DPRINTK ("%s: Frame contents ", dev->name); | |
1540 | for (i = 0; i < 70; i++) | |
1541 | printk (" %2.2x", | |
1542 | rx_ring[ring_offset + i]); | |
1543 | printk (".\n"); | |
1544 | } | |
1545 | #endif | |
1546 | ||
1547 | /* If Rx err or invalid rx_size/rx_status received | |
1548 | * (which happens if we get lost in the ring), | |
1549 | * Rx process gets reset, so we abort any further | |
1550 | * Rx processing. | |
1551 | */ | |
1552 | if ((rx_size > (MAX_ETH_FRAME_SIZE+4)) || | |
1553 | (!(rx_status & RxStatusOK))) { | |
1554 | netdrv_rx_err (rx_status, dev, tp, ioaddr); | |
1555 | return; | |
1556 | } | |
1557 | ||
1558 | /* Malloc up new buffer, compatible with net-2e. */ | |
1559 | /* Omit the four octet CRC from the length. */ | |
1560 | ||
1561 | /* TODO: consider allocating skb's outside of | |
1562 | * interrupt context, both to speed interrupt processing, | |
1563 | * and also to reduce the chances of having to | |
1564 | * drop packets here under memory pressure. | |
1565 | */ | |
1566 | ||
1567 | skb = dev_alloc_skb (pkt_size + 2); | |
1568 | if (skb) { | |
1569 | skb->dev = dev; | |
1570 | skb_reserve (skb, 2); /* 16 byte align the IP fields. */ | |
1571 | ||
1572 | eth_copy_and_sum (skb, &rx_ring[ring_offset + 4], pkt_size, 0); | |
1573 | skb_put (skb, pkt_size); | |
1574 | ||
1575 | skb->protocol = eth_type_trans (skb, dev); | |
1576 | netif_rx (skb); | |
1577 | dev->last_rx = jiffies; | |
1578 | tp->stats.rx_bytes += pkt_size; | |
1579 | tp->stats.rx_packets++; | |
1580 | } else { | |
1581 | printk (KERN_WARNING | |
1582 | "%s: Memory squeeze, dropping packet.\n", | |
1583 | dev->name); | |
1584 | tp->stats.rx_dropped++; | |
1585 | } | |
1586 | ||
1587 | cur_rx = (cur_rx + rx_size + 4 + 3) & ~3; | |
1588 | NETDRV_W16_F (RxBufPtr, cur_rx - 16); | |
1589 | } | |
1590 | ||
1591 | DPRINTK ("%s: Done netdrv_rx(), current %4.4x BufAddr %4.4x," | |
1592 | " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx, | |
1593 | NETDRV_R16 (RxBufAddr), | |
1594 | NETDRV_R16 (RxBufPtr), NETDRV_R8 (ChipCmd)); | |
1595 | ||
1596 | tp->cur_rx = cur_rx; | |
1597 | } | |
1598 | ||
1599 | ||
1600 | static void netdrv_weird_interrupt (struct net_device *dev, | |
1601 | struct netdrv_private *tp, | |
1602 | void *ioaddr, | |
1603 | int status, int link_changed) | |
1604 | { | |
1605 | printk (KERN_DEBUG "%s: Abnormal interrupt, status %8.8x.\n", | |
1606 | dev->name, status); | |
1607 | ||
1608 | assert (dev != NULL); | |
1609 | assert (tp != NULL); | |
1610 | assert (ioaddr != NULL); | |
1611 | ||
1612 | /* Update the error count. */ | |
1613 | tp->stats.rx_missed_errors += NETDRV_R32 (RxMissed); | |
1614 | NETDRV_W32 (RxMissed, 0); | |
1615 | ||
1616 | if ((status & RxUnderrun) && link_changed && | |
1617 | (tp->drv_flags & HAS_LNK_CHNG)) { | |
1618 | /* Really link-change on new chips. */ | |
1619 | int lpar = NETDRV_R16 (NWayLPAR); | |
1620 | int duplex = (lpar & 0x0100) || (lpar & 0x01C0) == 0x0040 | |
1621 | || tp->duplex_lock; | |
1622 | if (tp->full_duplex != duplex) { | |
1623 | tp->full_duplex = duplex; | |
1624 | NETDRV_W8 (Cfg9346, Cfg9346_Unlock); | |
1625 | NETDRV_W8 (Config1, tp->full_duplex ? 0x60 : 0x20); | |
1626 | NETDRV_W8 (Cfg9346, Cfg9346_Lock); | |
1627 | } | |
1628 | status &= ~RxUnderrun; | |
1629 | } | |
1630 | ||
1631 | /* XXX along with netdrv_rx_err, are we double-counting errors? */ | |
1632 | if (status & | |
1633 | (RxUnderrun | RxOverflow | RxErr | RxFIFOOver)) | |
1634 | tp->stats.rx_errors++; | |
1635 | ||
1636 | if (status & (PCSTimeout)) | |
1637 | tp->stats.rx_length_errors++; | |
1638 | if (status & (RxUnderrun | RxFIFOOver)) | |
1639 | tp->stats.rx_fifo_errors++; | |
1640 | if (status & RxOverflow) { | |
1641 | tp->stats.rx_over_errors++; | |
1642 | tp->cur_rx = NETDRV_R16 (RxBufAddr) % RX_BUF_LEN; | |
1643 | NETDRV_W16_F (RxBufPtr, tp->cur_rx - 16); | |
1644 | } | |
1645 | if (status & PCIErr) { | |
1646 | u16 pci_cmd_status; | |
1647 | pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status); | |
1648 | ||
1649 | printk (KERN_ERR "%s: PCI Bus error %4.4x.\n", | |
1650 | dev->name, pci_cmd_status); | |
1651 | } | |
1652 | } | |
1653 | ||
1654 | ||
1655 | /* The interrupt handler does all of the Rx thread work and cleans up | |
1656 | after the Tx thread. */ | |
1657 | static irqreturn_t netdrv_interrupt (int irq, void *dev_instance, | |
1658 | struct pt_regs *regs) | |
1659 | { | |
1660 | struct net_device *dev = (struct net_device *) dev_instance; | |
1661 | struct netdrv_private *tp = dev->priv; | |
1662 | int boguscnt = max_interrupt_work; | |
1663 | void *ioaddr = tp->mmio_addr; | |
1664 | int status = 0, link_changed = 0; /* avoid bogus "uninit" warning */ | |
1665 | int handled = 0; | |
1666 | ||
1667 | spin_lock (&tp->lock); | |
1668 | ||
1669 | do { | |
1670 | status = NETDRV_R16 (IntrStatus); | |
1671 | ||
1672 | /* h/w no longer present (hotplug?) or major error, bail */ | |
1673 | if (status == 0xFFFF) | |
1674 | break; | |
1675 | ||
1676 | handled = 1; | |
1677 | /* Acknowledge all of the current interrupt sources ASAP */ | |
1678 | NETDRV_W16_F (IntrStatus, status); | |
1679 | ||
1680 | DPRINTK ("%s: interrupt status=%#4.4x new intstat=%#4.4x.\n", | |
1681 | dev->name, status, | |
1682 | NETDRV_R16 (IntrStatus)); | |
1683 | ||
1684 | if ((status & | |
1685 | (PCIErr | PCSTimeout | RxUnderrun | RxOverflow | | |
1686 | RxFIFOOver | TxErr | TxOK | RxErr | RxOK)) == 0) | |
1687 | break; | |
1688 | ||
1689 | /* Check uncommon events with one test. */ | |
1690 | if (status & (PCIErr | PCSTimeout | RxUnderrun | RxOverflow | | |
1691 | RxFIFOOver | TxErr | RxErr)) | |
1692 | netdrv_weird_interrupt (dev, tp, ioaddr, | |
1693 | status, link_changed); | |
1694 | ||
1695 | if (status & (RxOK | RxUnderrun | RxOverflow | RxFIFOOver)) /* Rx interrupt */ | |
1696 | netdrv_rx_interrupt (dev, tp, ioaddr); | |
1697 | ||
1698 | if (status & (TxOK | TxErr)) | |
1699 | netdrv_tx_interrupt (dev, tp, ioaddr); | |
1700 | ||
1701 | boguscnt--; | |
1702 | } while (boguscnt > 0); | |
1703 | ||
1704 | if (boguscnt <= 0) { | |
1705 | printk (KERN_WARNING | |
1706 | "%s: Too much work at interrupt, " | |
1707 | "IntrStatus=0x%4.4x.\n", dev->name, | |
1708 | status); | |
1709 | ||
1710 | /* Clear all interrupt sources. */ | |
1711 | NETDRV_W16 (IntrStatus, 0xffff); | |
1712 | } | |
1713 | ||
1714 | spin_unlock (&tp->lock); | |
1715 | ||
1716 | DPRINTK ("%s: exiting interrupt, intr_status=%#4.4x.\n", | |
1717 | dev->name, NETDRV_R16 (IntrStatus)); | |
1718 | return IRQ_RETVAL(handled); | |
1719 | } | |
1720 | ||
1721 | ||
1722 | static int netdrv_close (struct net_device *dev) | |
1723 | { | |
1724 | struct netdrv_private *tp = dev->priv; | |
1725 | void *ioaddr = tp->mmio_addr; | |
1726 | unsigned long flags; | |
1727 | ||
1728 | DPRINTK ("ENTER\n"); | |
1729 | ||
1730 | netif_stop_queue (dev); | |
1731 | ||
1732 | DPRINTK ("%s: Shutting down ethercard, status was 0x%4.4x.\n", | |
1733 | dev->name, NETDRV_R16 (IntrStatus)); | |
1734 | ||
1735 | del_timer_sync (&tp->timer); | |
1736 | ||
1737 | spin_lock_irqsave (&tp->lock, flags); | |
1738 | ||
1739 | /* Stop the chip's Tx and Rx DMA processes. */ | |
1740 | NETDRV_W8 (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear)); | |
1741 | ||
1742 | /* Disable interrupts by clearing the interrupt mask. */ | |
1743 | NETDRV_W16 (IntrMask, 0x0000); | |
1744 | ||
1745 | /* Update the error counts. */ | |
1746 | tp->stats.rx_missed_errors += NETDRV_R32 (RxMissed); | |
1747 | NETDRV_W32 (RxMissed, 0); | |
1748 | ||
1749 | spin_unlock_irqrestore (&tp->lock, flags); | |
1750 | ||
1751 | synchronize_irq (); | |
1752 | free_irq (dev->irq, dev); | |
1753 | ||
1754 | netdrv_tx_clear (tp); | |
1755 | ||
1756 | pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN, | |
1757 | tp->rx_ring, tp->rx_ring_dma); | |
1758 | pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN, | |
1759 | tp->tx_bufs, tp->tx_bufs_dma); | |
1760 | tp->rx_ring = NULL; | |
1761 | tp->tx_bufs = NULL; | |
1762 | ||
1763 | /* Green! Put the chip in low-power mode. */ | |
1764 | NETDRV_W8 (Cfg9346, Cfg9346_Unlock); | |
1765 | NETDRV_W8 (Config1, 0x03); | |
1766 | NETDRV_W8 (Cfg9346, Cfg9346_Lock); | |
1767 | ||
1768 | DPRINTK ("EXIT\n"); | |
1769 | return 0; | |
1770 | } | |
1771 | ||
1772 | ||
1773 | static int netdrv_ioctl (struct net_device *dev, struct ifreq *rq, int cmd) | |
1774 | { | |
1775 | struct netdrv_private *tp = dev->priv; | |
1776 | struct mii_ioctl_data *data = if_mii(rq); | |
1777 | unsigned long flags; | |
1778 | int rc = 0; | |
1779 | ||
1780 | DPRINTK ("ENTER\n"); | |
1781 | ||
1782 | switch (cmd) { | |
1783 | case SIOCGMIIPHY: /* Get address of MII PHY in use. */ | |
1784 | data->phy_id = tp->phys[0] & 0x3f; | |
1785 | /* Fall Through */ | |
1786 | ||
1787 | case SIOCGMIIREG: /* Read MII PHY register. */ | |
1788 | spin_lock_irqsave (&tp->lock, flags); | |
1789 | data->val_out = mdio_read (dev, data->phy_id & 0x1f, data->reg_num & 0x1f); | |
1790 | spin_unlock_irqrestore (&tp->lock, flags); | |
1791 | break; | |
1792 | ||
1793 | case SIOCSMIIREG: /* Write MII PHY register. */ | |
1794 | if (!capable (CAP_NET_ADMIN)) { | |
1795 | rc = -EPERM; | |
1796 | break; | |
1797 | } | |
1798 | ||
1799 | spin_lock_irqsave (&tp->lock, flags); | |
1800 | mdio_write (dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in); | |
1801 | spin_unlock_irqrestore (&tp->lock, flags); | |
1802 | break; | |
1803 | ||
1804 | default: | |
1805 | rc = -EOPNOTSUPP; | |
1806 | break; | |
1807 | } | |
1808 | ||
1809 | DPRINTK ("EXIT, returning %d\n", rc); | |
1810 | return rc; | |
1811 | } | |
1812 | ||
1813 | ||
1814 | static struct net_device_stats *netdrv_get_stats (struct net_device *dev) | |
1815 | { | |
1816 | struct netdrv_private *tp = dev->priv; | |
1817 | void *ioaddr = tp->mmio_addr; | |
1818 | ||
1819 | DPRINTK ("ENTER\n"); | |
1820 | ||
1821 | assert (tp != NULL); | |
1822 | ||
1823 | if (netif_running(dev)) { | |
1824 | unsigned long flags; | |
1825 | ||
1826 | spin_lock_irqsave (&tp->lock, flags); | |
1827 | ||
1828 | tp->stats.rx_missed_errors += NETDRV_R32 (RxMissed); | |
1829 | NETDRV_W32 (RxMissed, 0); | |
1830 | ||
1831 | spin_unlock_irqrestore (&tp->lock, flags); | |
1832 | } | |
1833 | ||
1834 | DPRINTK ("EXIT\n"); | |
1835 | return &tp->stats; | |
1836 | } | |
1837 | ||
1838 | /* Set or clear the multicast filter for this adaptor. | |
1839 | This routine is not state sensitive and need not be SMP locked. */ | |
1840 | ||
1841 | static void netdrv_set_rx_mode (struct net_device *dev) | |
1842 | { | |
1843 | struct netdrv_private *tp = dev->priv; | |
1844 | void *ioaddr = tp->mmio_addr; | |
1845 | u32 mc_filter[2]; /* Multicast hash filter */ | |
1846 | int i, rx_mode; | |
1847 | u32 tmp; | |
1848 | ||
1849 | DPRINTK ("ENTER\n"); | |
1850 | ||
1851 | DPRINTK ("%s: netdrv_set_rx_mode(%4.4x) done -- Rx config %8.8x.\n", | |
1852 | dev->name, dev->flags, NETDRV_R32 (RxConfig)); | |
1853 | ||
1854 | /* Note: do not reorder, GCC is clever about common statements. */ | |
1855 | if (dev->flags & IFF_PROMISC) { | |
1856 | /* Unconditionally log net taps. */ | |
1857 | printk (KERN_NOTICE "%s: Promiscuous mode enabled.\n", | |
1858 | dev->name); | |
1859 | rx_mode = | |
1860 | AcceptBroadcast | AcceptMulticast | AcceptMyPhys | | |
1861 | AcceptAllPhys; | |
1862 | mc_filter[1] = mc_filter[0] = 0xffffffff; | |
1863 | } else if ((dev->mc_count > multicast_filter_limit) | |
1864 | || (dev->flags & IFF_ALLMULTI)) { | |
1865 | /* Too many to filter perfectly -- accept all multicasts. */ | |
1866 | rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; | |
1867 | mc_filter[1] = mc_filter[0] = 0xffffffff; | |
1868 | } else { | |
1869 | struct dev_mc_list *mclist; | |
1870 | rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; | |
1871 | mc_filter[1] = mc_filter[0] = 0; | |
1872 | for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; | |
1873 | i++, mclist = mclist->next) { | |
1874 | int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26; | |
1875 | ||
1876 | mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31); | |
1877 | } | |
1878 | } | |
1879 | ||
1880 | /* if called from irq handler, lock already acquired */ | |
1881 | if (!in_irq ()) | |
1882 | spin_lock_irq (&tp->lock); | |
1883 | ||
1884 | /* We can safely update without stopping the chip. */ | |
1885 | tmp = netdrv_rx_config | rx_mode | | |
1886 | (NETDRV_R32 (RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask); | |
1887 | NETDRV_W32_F (RxConfig, tmp); | |
1888 | NETDRV_W32_F (MAR0 + 0, mc_filter[0]); | |
1889 | NETDRV_W32_F (MAR0 + 4, mc_filter[1]); | |
1890 | ||
1891 | if (!in_irq ()) | |
1892 | spin_unlock_irq (&tp->lock); | |
1893 | ||
1894 | DPRINTK ("EXIT\n"); | |
1895 | } | |
1896 | ||
1897 | ||
1898 | #ifdef CONFIG_PM | |
1899 | ||
1900 | static int netdrv_suspend (struct pci_dev *pdev, u32 state) | |
1901 | { | |
1902 | struct net_device *dev = pci_get_drvdata (pdev); | |
1903 | struct netdrv_private *tp = dev->priv; | |
1904 | void *ioaddr = tp->mmio_addr; | |
1905 | unsigned long flags; | |
1906 | ||
1907 | if (!netif_running(dev)) | |
1908 | return 0; | |
1909 | netif_device_detach (dev); | |
1910 | ||
1911 | spin_lock_irqsave (&tp->lock, flags); | |
1912 | ||
1913 | /* Disable interrupts, stop Tx and Rx. */ | |
1914 | NETDRV_W16 (IntrMask, 0x0000); | |
1915 | NETDRV_W8 (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear)); | |
1916 | ||
1917 | /* Update the error counts. */ | |
1918 | tp->stats.rx_missed_errors += NETDRV_R32 (RxMissed); | |
1919 | NETDRV_W32 (RxMissed, 0); | |
1920 | ||
1921 | spin_unlock_irqrestore (&tp->lock, flags); | |
1922 | ||
1923 | pci_save_state (pdev); | |
1924 | pci_set_power_state (pdev, PCI_D3hot); | |
1925 | ||
1926 | return 0; | |
1927 | } | |
1928 | ||
1929 | ||
1930 | static int netdrv_resume (struct pci_dev *pdev) | |
1931 | { | |
1932 | struct net_device *dev = pci_get_drvdata (pdev); | |
1933 | struct netdrv_private *tp = dev->priv; | |
1934 | ||
1935 | if (!netif_running(dev)) | |
1936 | return 0; | |
1937 | pci_set_power_state (pdev, PCI_D0); | |
1938 | pci_restore_state (pdev); | |
1939 | netif_device_attach (dev); | |
1940 | netdrv_hw_start (dev); | |
1941 | ||
1942 | return 0; | |
1943 | } | |
1944 | ||
1945 | #endif /* CONFIG_PM */ | |
1946 | ||
1947 | ||
1948 | static struct pci_driver netdrv_pci_driver = { | |
1949 | .name = MODNAME, | |
1950 | .id_table = netdrv_pci_tbl, | |
1951 | .probe = netdrv_init_one, | |
1952 | .remove = __devexit_p(netdrv_remove_one), | |
1953 | #ifdef CONFIG_PM | |
1954 | .suspend = netdrv_suspend, | |
1955 | .resume = netdrv_resume, | |
1956 | #endif /* CONFIG_PM */ | |
1957 | }; | |
1958 | ||
1959 | ||
1960 | static int __init netdrv_init_module (void) | |
1961 | { | |
1962 | /* when a module, this is printed whether or not devices are found in probe */ | |
1963 | #ifdef MODULE | |
1964 | printk(version); | |
1965 | #endif | |
1966 | return pci_module_init (&netdrv_pci_driver); | |
1967 | } | |
1968 | ||
1969 | ||
1970 | static void __exit netdrv_cleanup_module (void) | |
1971 | { | |
1972 | pci_unregister_driver (&netdrv_pci_driver); | |
1973 | } | |
1974 | ||
1975 | ||
1976 | module_init(netdrv_init_module); | |
1977 | module_exit(netdrv_cleanup_module); |