|
1 /* |
|
2 |
|
3 8139too.c: A RealTek RTL-8139 Fast Ethernet driver for Linux. |
|
4 |
|
5 Maintained by Jeff Garzik <jgarzik@pobox.com> |
|
6 Copyright 2000-2002 Jeff Garzik |
|
7 |
|
8 Much code comes from Donald Becker's rtl8139.c driver, |
|
9 versions 1.13 and older. This driver was originally based |
|
10 on rtl8139.c version 1.07. Header of rtl8139.c version 1.13: |
|
11 |
|
12 -----<snip>----- |
|
13 |
|
14 Written 1997-2001 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 Contributors: |
|
42 |
|
43 Donald Becker - he wrote the original driver, kudos to him! |
|
44 (but please don't e-mail him for support, this isn't his driver) |
|
45 |
|
46 Tigran Aivazian - bug fixes, skbuff free cleanup |
|
47 |
|
48 Martin Mares - suggestions for PCI cleanup |
|
49 |
|
50 David S. Miller - PCI DMA and softnet updates |
|
51 |
|
52 Ernst Gill - fixes ported from BSD driver |
|
53 |
|
54 Daniel Kobras - identified specific locations of |
|
55 posted MMIO write bugginess |
|
56 |
|
57 Gerard Sharp - bug fix, testing and feedback |
|
58 |
|
59 David Ford - Rx ring wrap fix |
|
60 |
|
61 Dan DeMaggio - swapped RTL8139 cards with me, and allowed me |
|
62 to find and fix a crucial bug on older chipsets. |
|
63 |
|
64 Donald Becker/Chris Butterworth/Marcus Westergren - |
|
65 Noticed various Rx packet size-related buglets. |
|
66 |
|
67 Santiago Garcia Mantinan - testing and feedback |
|
68 |
|
69 Jens David - 2.2.x kernel backports |
|
70 |
|
71 Martin Dennett - incredibly helpful insight on undocumented |
|
72 features of the 8139 chips |
|
73 |
|
74 Jean-Jacques Michel - bug fix |
|
75 |
|
76 Tobias Ringström - Rx interrupt status checking suggestion |
|
77 |
|
78 Andrew Morton - Clear blocked signals, avoid |
|
79 buffer overrun setting current->comm. |
|
80 |
|
81 Kalle Olavi Niemitalo - Wake-on-LAN ioctls |
|
82 |
|
83 Robert Kuebel - Save kernel thread from dying on any signal. |
|
84 |
|
85 Submitting bug reports: |
|
86 |
|
87 "rtl8139-diag -mmmaaavvveefN" output |
|
88 enable RTL8139_DEBUG below, and look at 'dmesg' or kernel log |
|
89 |
|
90 */ |
|
91 |
|
92 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
|
93 |
|
94 #define DRV_NAME "8139too" |
|
95 #define DRV_VERSION "0.9.28" |
|
96 |
|
97 |
|
98 #include <linux/module.h> |
|
99 #include <linux/kernel.h> |
|
100 #include <linux/compiler.h> |
|
101 #include <linux/pci.h> |
|
102 #include <linux/init.h> |
|
103 #include <linux/netdevice.h> |
|
104 #include <linux/etherdevice.h> |
|
105 #include <linux/rtnetlink.h> |
|
106 #include <linux/delay.h> |
|
107 #include <linux/ethtool.h> |
|
108 #include <linux/mii.h> |
|
109 #include <linux/completion.h> |
|
110 #include <linux/crc32.h> |
|
111 #include <linux/io.h> |
|
112 #include <linux/uaccess.h> |
|
113 #include <linux/gfp.h> |
|
114 #include <asm/irq.h> |
|
115 |
|
116 #define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION |
|
117 |
|
118 /* Default Message level */ |
|
119 #define RTL8139_DEF_MSG_ENABLE (NETIF_MSG_DRV | \ |
|
120 NETIF_MSG_PROBE | \ |
|
121 NETIF_MSG_LINK) |
|
122 |
|
123 |
|
124 /* define to 1, 2 or 3 to enable copious debugging info */ |
|
125 #define RTL8139_DEBUG 0 |
|
126 |
|
127 /* define to 1 to disable lightweight runtime debugging checks */ |
|
128 #undef RTL8139_NDEBUG |
|
129 |
|
130 |
|
131 #ifdef RTL8139_NDEBUG |
|
132 # define assert(expr) do {} while (0) |
|
133 #else |
|
134 # define assert(expr) \ |
|
135 if (unlikely(!(expr))) { \ |
|
136 pr_err("Assertion failed! %s,%s,%s,line=%d\n", \ |
|
137 #expr, __FILE__, __func__, __LINE__); \ |
|
138 } |
|
139 #endif |
|
140 |
|
141 |
|
142 /* A few user-configurable values. */ |
|
143 /* media options */ |
|
144 #define MAX_UNITS 8 |
|
145 static int media[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; |
|
146 static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; |
|
147 |
|
148 /* Whether to use MMIO or PIO. Default to MMIO. */ |
|
149 #ifdef CONFIG_8139TOO_PIO |
|
150 static int use_io = 1; |
|
151 #else |
|
152 static int use_io = 0; |
|
153 #endif |
|
154 |
|
155 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). |
|
156 The RTL chips use a 64 element hash table based on the Ethernet CRC. */ |
|
157 static int multicast_filter_limit = 32; |
|
158 |
|
159 /* bitmapped message enable number */ |
|
160 static int debug = -1; |
|
161 |
|
162 /* |
|
163 * Receive ring size |
|
164 * Warning: 64K ring has hardware issues and may lock up. |
|
165 */ |
|
166 #if defined(CONFIG_SH_DREAMCAST) |
|
167 #define RX_BUF_IDX 0 /* 8K ring */ |
|
168 #else |
|
169 #define RX_BUF_IDX 2 /* 32K ring */ |
|
170 #endif |
|
171 #define RX_BUF_LEN (8192 << RX_BUF_IDX) |
|
172 #define RX_BUF_PAD 16 |
|
173 #define RX_BUF_WRAP_PAD 2048 /* spare padding to handle lack of packet wrap */ |
|
174 |
|
175 #if RX_BUF_LEN == 65536 |
|
176 #define RX_BUF_TOT_LEN RX_BUF_LEN |
|
177 #else |
|
178 #define RX_BUF_TOT_LEN (RX_BUF_LEN + RX_BUF_PAD + RX_BUF_WRAP_PAD) |
|
179 #endif |
|
180 |
|
181 /* Number of Tx descriptor registers. */ |
|
182 #define NUM_TX_DESC 4 |
|
183 |
|
184 /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/ |
|
185 #define MAX_ETH_FRAME_SIZE 1536 |
|
186 |
|
187 /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */ |
|
188 #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE |
|
189 #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC) |
|
190 |
|
191 /* PCI Tuning Parameters |
|
192 Threshold is bytes transferred to chip before transmission starts. */ |
|
193 #define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */ |
|
194 |
|
195 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */ |
|
196 #define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */ |
|
197 #define RX_DMA_BURST 7 /* Maximum PCI burst, '6' is 1024 */ |
|
198 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */ |
|
199 #define TX_RETRY 8 /* 0-15. retries = 16 + (TX_RETRY * 16) */ |
|
200 |
|
201 /* Operational parameters that usually are not changed. */ |
|
202 /* Time in jiffies before concluding the transmitter is hung. */ |
|
203 #define TX_TIMEOUT (6*HZ) |
|
204 |
|
205 |
|
206 enum { |
|
207 HAS_MII_XCVR = 0x010000, |
|
208 HAS_CHIP_XCVR = 0x020000, |
|
209 HAS_LNK_CHNG = 0x040000, |
|
210 }; |
|
211 |
|
212 #define RTL_NUM_STATS 4 /* number of ETHTOOL_GSTATS u64's */ |
|
213 #define RTL_REGS_VER 1 /* version of reg. data in ETHTOOL_GREGS */ |
|
214 #define RTL_MIN_IO_SIZE 0x80 |
|
215 #define RTL8139B_IO_SIZE 256 |
|
216 |
|
217 #define RTL8129_CAPS HAS_MII_XCVR |
|
218 #define RTL8139_CAPS (HAS_CHIP_XCVR|HAS_LNK_CHNG) |
|
219 |
|
220 typedef enum { |
|
221 RTL8139 = 0, |
|
222 RTL8129, |
|
223 } board_t; |
|
224 |
|
225 |
|
226 /* indexed by board_t, above */ |
|
227 static const struct { |
|
228 const char *name; |
|
229 u32 hw_flags; |
|
230 } board_info[] __devinitdata = { |
|
231 { "RealTek RTL8139", RTL8139_CAPS }, |
|
232 { "RealTek RTL8129", RTL8129_CAPS }, |
|
233 }; |
|
234 |
|
235 |
|
236 static DEFINE_PCI_DEVICE_TABLE(rtl8139_pci_tbl) = { |
|
237 {0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
238 {0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
239 {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
240 {0x1500, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
241 {0x4033, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
242 {0x1186, 0x1300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
243 {0x1186, 0x1340, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
244 {0x13d1, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
245 {0x1259, 0xa117, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
246 {0x1259, 0xa11e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
247 {0x14ea, 0xab06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
248 {0x14ea, 0xab07, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
249 {0x11db, 0x1234, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
250 {0x1432, 0x9130, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
251 {0x02ac, 0x1012, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
252 {0x018a, 0x0106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
253 {0x126c, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
254 {0x1743, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
255 {0x021b, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
256 |
|
257 #ifdef CONFIG_SH_SECUREEDGE5410 |
|
258 /* Bogus 8139 silicon reports 8129 without external PROM :-( */ |
|
259 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 }, |
|
260 #endif |
|
261 #ifdef CONFIG_8139TOO_8129 |
|
262 {0x10ec, 0x8129, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8129 }, |
|
263 #endif |
|
264 |
|
265 /* some crazy cards report invalid vendor ids like |
|
266 * 0x0001 here. The other ids are valid and constant, |
|
267 * so we simply don't match on the main vendor id. |
|
268 */ |
|
269 {PCI_ANY_ID, 0x8139, 0x10ec, 0x8139, 0, 0, RTL8139 }, |
|
270 {PCI_ANY_ID, 0x8139, 0x1186, 0x1300, 0, 0, RTL8139 }, |
|
271 {PCI_ANY_ID, 0x8139, 0x13d1, 0xab06, 0, 0, RTL8139 }, |
|
272 |
|
273 {0,} |
|
274 }; |
|
275 MODULE_DEVICE_TABLE (pci, rtl8139_pci_tbl); |
|
276 |
|
277 static struct { |
|
278 const char str[ETH_GSTRING_LEN]; |
|
279 } ethtool_stats_keys[] = { |
|
280 { "early_rx" }, |
|
281 { "tx_buf_mapped" }, |
|
282 { "tx_timeouts" }, |
|
283 { "rx_lost_in_ring" }, |
|
284 }; |
|
285 |
|
286 /* The rest of these values should never change. */ |
|
287 |
|
288 /* Symbolic offsets to registers. */ |
|
289 enum RTL8139_registers { |
|
290 MAC0 = 0, /* Ethernet hardware address. */ |
|
291 MAR0 = 8, /* Multicast filter. */ |
|
292 TxStatus0 = 0x10, /* Transmit status (Four 32bit registers). */ |
|
293 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */ |
|
294 RxBuf = 0x30, |
|
295 ChipCmd = 0x37, |
|
296 RxBufPtr = 0x38, |
|
297 RxBufAddr = 0x3A, |
|
298 IntrMask = 0x3C, |
|
299 IntrStatus = 0x3E, |
|
300 TxConfig = 0x40, |
|
301 RxConfig = 0x44, |
|
302 Timer = 0x48, /* A general-purpose counter. */ |
|
303 RxMissed = 0x4C, /* 24 bits valid, write clears. */ |
|
304 Cfg9346 = 0x50, |
|
305 Config0 = 0x51, |
|
306 Config1 = 0x52, |
|
307 TimerInt = 0x54, |
|
308 MediaStatus = 0x58, |
|
309 Config3 = 0x59, |
|
310 Config4 = 0x5A, /* absent on RTL-8139A */ |
|
311 HltClk = 0x5B, |
|
312 MultiIntr = 0x5C, |
|
313 TxSummary = 0x60, |
|
314 BasicModeCtrl = 0x62, |
|
315 BasicModeStatus = 0x64, |
|
316 NWayAdvert = 0x66, |
|
317 NWayLPAR = 0x68, |
|
318 NWayExpansion = 0x6A, |
|
319 /* Undocumented registers, but required for proper operation. */ |
|
320 FIFOTMS = 0x70, /* FIFO Control and test. */ |
|
321 CSCR = 0x74, /* Chip Status and Configuration Register. */ |
|
322 PARA78 = 0x78, |
|
323 FlashReg = 0xD4, /* Communication with Flash ROM, four bytes. */ |
|
324 PARA7c = 0x7c, /* Magic transceiver parameter register. */ |
|
325 Config5 = 0xD8, /* absent on RTL-8139A */ |
|
326 }; |
|
327 |
|
328 enum ClearBitMasks { |
|
329 MultiIntrClear = 0xF000, |
|
330 ChipCmdClear = 0xE2, |
|
331 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1), |
|
332 }; |
|
333 |
|
334 enum ChipCmdBits { |
|
335 CmdReset = 0x10, |
|
336 CmdRxEnb = 0x08, |
|
337 CmdTxEnb = 0x04, |
|
338 RxBufEmpty = 0x01, |
|
339 }; |
|
340 |
|
341 /* Interrupt register bits, using my own meaningful names. */ |
|
342 enum IntrStatusBits { |
|
343 PCIErr = 0x8000, |
|
344 PCSTimeout = 0x4000, |
|
345 RxFIFOOver = 0x40, |
|
346 RxUnderrun = 0x20, |
|
347 RxOverflow = 0x10, |
|
348 TxErr = 0x08, |
|
349 TxOK = 0x04, |
|
350 RxErr = 0x02, |
|
351 RxOK = 0x01, |
|
352 |
|
353 RxAckBits = RxFIFOOver | RxOverflow | RxOK, |
|
354 }; |
|
355 |
|
356 enum TxStatusBits { |
|
357 TxHostOwns = 0x2000, |
|
358 TxUnderrun = 0x4000, |
|
359 TxStatOK = 0x8000, |
|
360 TxOutOfWindow = 0x20000000, |
|
361 TxAborted = 0x40000000, |
|
362 TxCarrierLost = 0x80000000, |
|
363 }; |
|
364 enum RxStatusBits { |
|
365 RxMulticast = 0x8000, |
|
366 RxPhysical = 0x4000, |
|
367 RxBroadcast = 0x2000, |
|
368 RxBadSymbol = 0x0020, |
|
369 RxRunt = 0x0010, |
|
370 RxTooLong = 0x0008, |
|
371 RxCRCErr = 0x0004, |
|
372 RxBadAlign = 0x0002, |
|
373 RxStatusOK = 0x0001, |
|
374 }; |
|
375 |
|
376 /* Bits in RxConfig. */ |
|
377 enum rx_mode_bits { |
|
378 AcceptErr = 0x20, |
|
379 AcceptRunt = 0x10, |
|
380 AcceptBroadcast = 0x08, |
|
381 AcceptMulticast = 0x04, |
|
382 AcceptMyPhys = 0x02, |
|
383 AcceptAllPhys = 0x01, |
|
384 }; |
|
385 |
|
386 /* Bits in TxConfig. */ |
|
387 enum tx_config_bits { |
|
388 /* Interframe Gap Time. Only TxIFG96 doesn't violate IEEE 802.3 */ |
|
389 TxIFGShift = 24, |
|
390 TxIFG84 = (0 << TxIFGShift), /* 8.4us / 840ns (10 / 100Mbps) */ |
|
391 TxIFG88 = (1 << TxIFGShift), /* 8.8us / 880ns (10 / 100Mbps) */ |
|
392 TxIFG92 = (2 << TxIFGShift), /* 9.2us / 920ns (10 / 100Mbps) */ |
|
393 TxIFG96 = (3 << TxIFGShift), /* 9.6us / 960ns (10 / 100Mbps) */ |
|
394 |
|
395 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */ |
|
396 TxCRC = (1 << 16), /* DISABLE Tx pkt CRC append */ |
|
397 TxClearAbt = (1 << 0), /* Clear abort (WO) */ |
|
398 TxDMAShift = 8, /* DMA burst value (0-7) is shifted X many bits */ |
|
399 TxRetryShift = 4, /* TXRR value (0-15) is shifted X many bits */ |
|
400 |
|
401 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */ |
|
402 }; |
|
403 |
|
404 /* Bits in Config1 */ |
|
405 enum Config1Bits { |
|
406 Cfg1_PM_Enable = 0x01, |
|
407 Cfg1_VPD_Enable = 0x02, |
|
408 Cfg1_PIO = 0x04, |
|
409 Cfg1_MMIO = 0x08, |
|
410 LWAKE = 0x10, /* not on 8139, 8139A */ |
|
411 Cfg1_Driver_Load = 0x20, |
|
412 Cfg1_LED0 = 0x40, |
|
413 Cfg1_LED1 = 0x80, |
|
414 SLEEP = (1 << 1), /* only on 8139, 8139A */ |
|
415 PWRDN = (1 << 0), /* only on 8139, 8139A */ |
|
416 }; |
|
417 |
|
418 /* Bits in Config3 */ |
|
419 enum Config3Bits { |
|
420 Cfg3_FBtBEn = (1 << 0), /* 1 = Fast Back to Back */ |
|
421 Cfg3_FuncRegEn = (1 << 1), /* 1 = enable CardBus Function registers */ |
|
422 Cfg3_CLKRUN_En = (1 << 2), /* 1 = enable CLKRUN */ |
|
423 Cfg3_CardB_En = (1 << 3), /* 1 = enable CardBus registers */ |
|
424 Cfg3_LinkUp = (1 << 4), /* 1 = wake up on link up */ |
|
425 Cfg3_Magic = (1 << 5), /* 1 = wake up on Magic Packet (tm) */ |
|
426 Cfg3_PARM_En = (1 << 6), /* 0 = software can set twister parameters */ |
|
427 Cfg3_GNTSel = (1 << 7), /* 1 = delay 1 clock from PCI GNT signal */ |
|
428 }; |
|
429 |
|
430 /* Bits in Config4 */ |
|
431 enum Config4Bits { |
|
432 LWPTN = (1 << 2), /* not on 8139, 8139A */ |
|
433 }; |
|
434 |
|
435 /* Bits in Config5 */ |
|
436 enum Config5Bits { |
|
437 Cfg5_PME_STS = (1 << 0), /* 1 = PCI reset resets PME_Status */ |
|
438 Cfg5_LANWake = (1 << 1), /* 1 = enable LANWake signal */ |
|
439 Cfg5_LDPS = (1 << 2), /* 0 = save power when link is down */ |
|
440 Cfg5_FIFOAddrPtr= (1 << 3), /* Realtek internal SRAM testing */ |
|
441 Cfg5_UWF = (1 << 4), /* 1 = accept unicast wakeup frame */ |
|
442 Cfg5_MWF = (1 << 5), /* 1 = accept multicast wakeup frame */ |
|
443 Cfg5_BWF = (1 << 6), /* 1 = accept broadcast wakeup frame */ |
|
444 }; |
|
445 |
|
446 enum RxConfigBits { |
|
447 /* rx fifo threshold */ |
|
448 RxCfgFIFOShift = 13, |
|
449 RxCfgFIFONone = (7 << RxCfgFIFOShift), |
|
450 |
|
451 /* Max DMA burst */ |
|
452 RxCfgDMAShift = 8, |
|
453 RxCfgDMAUnlimited = (7 << RxCfgDMAShift), |
|
454 |
|
455 /* rx ring buffer length */ |
|
456 RxCfgRcv8K = 0, |
|
457 RxCfgRcv16K = (1 << 11), |
|
458 RxCfgRcv32K = (1 << 12), |
|
459 RxCfgRcv64K = (1 << 11) | (1 << 12), |
|
460 |
|
461 /* Disable packet wrap at end of Rx buffer. (not possible with 64k) */ |
|
462 RxNoWrap = (1 << 7), |
|
463 }; |
|
464 |
|
465 /* Twister tuning parameters from RealTek. |
|
466 Completely undocumented, but required to tune bad links on some boards. */ |
|
467 enum CSCRBits { |
|
468 CSCR_LinkOKBit = 0x0400, |
|
469 CSCR_LinkChangeBit = 0x0800, |
|
470 CSCR_LinkStatusBits = 0x0f000, |
|
471 CSCR_LinkDownOffCmd = 0x003c0, |
|
472 CSCR_LinkDownCmd = 0x0f3c0, |
|
473 }; |
|
474 |
|
475 enum Cfg9346Bits { |
|
476 Cfg9346_Lock = 0x00, |
|
477 Cfg9346_Unlock = 0xC0, |
|
478 }; |
|
479 |
|
480 typedef enum { |
|
481 CH_8139 = 0, |
|
482 CH_8139_K, |
|
483 CH_8139A, |
|
484 CH_8139A_G, |
|
485 CH_8139B, |
|
486 CH_8130, |
|
487 CH_8139C, |
|
488 CH_8100, |
|
489 CH_8100B_8139D, |
|
490 CH_8101, |
|
491 } chip_t; |
|
492 |
|
493 enum chip_flags { |
|
494 HasHltClk = (1 << 0), |
|
495 HasLWake = (1 << 1), |
|
496 }; |
|
497 |
|
498 #define HW_REVID(b30, b29, b28, b27, b26, b23, b22) \ |
|
499 (b30<<30 | b29<<29 | b28<<28 | b27<<27 | b26<<26 | b23<<23 | b22<<22) |
|
500 #define HW_REVID_MASK HW_REVID(1, 1, 1, 1, 1, 1, 1) |
|
501 |
|
502 /* directly indexed by chip_t, above */ |
|
503 static const struct { |
|
504 const char *name; |
|
505 u32 version; /* from RTL8139C/RTL8139D docs */ |
|
506 u32 flags; |
|
507 } rtl_chip_info[] = { |
|
508 { "RTL-8139", |
|
509 HW_REVID(1, 0, 0, 0, 0, 0, 0), |
|
510 HasHltClk, |
|
511 }, |
|
512 |
|
513 { "RTL-8139 rev K", |
|
514 HW_REVID(1, 1, 0, 0, 0, 0, 0), |
|
515 HasHltClk, |
|
516 }, |
|
517 |
|
518 { "RTL-8139A", |
|
519 HW_REVID(1, 1, 1, 0, 0, 0, 0), |
|
520 HasHltClk, /* XXX undocumented? */ |
|
521 }, |
|
522 |
|
523 { "RTL-8139A rev G", |
|
524 HW_REVID(1, 1, 1, 0, 0, 1, 0), |
|
525 HasHltClk, /* XXX undocumented? */ |
|
526 }, |
|
527 |
|
528 { "RTL-8139B", |
|
529 HW_REVID(1, 1, 1, 1, 0, 0, 0), |
|
530 HasLWake, |
|
531 }, |
|
532 |
|
533 { "RTL-8130", |
|
534 HW_REVID(1, 1, 1, 1, 1, 0, 0), |
|
535 HasLWake, |
|
536 }, |
|
537 |
|
538 { "RTL-8139C", |
|
539 HW_REVID(1, 1, 1, 0, 1, 0, 0), |
|
540 HasLWake, |
|
541 }, |
|
542 |
|
543 { "RTL-8100", |
|
544 HW_REVID(1, 1, 1, 1, 0, 1, 0), |
|
545 HasLWake, |
|
546 }, |
|
547 |
|
548 { "RTL-8100B/8139D", |
|
549 HW_REVID(1, 1, 1, 0, 1, 0, 1), |
|
550 HasHltClk /* XXX undocumented? */ |
|
551 | HasLWake, |
|
552 }, |
|
553 |
|
554 { "RTL-8101", |
|
555 HW_REVID(1, 1, 1, 0, 1, 1, 1), |
|
556 HasLWake, |
|
557 }, |
|
558 }; |
|
559 |
|
560 struct rtl_extra_stats { |
|
561 unsigned long early_rx; |
|
562 unsigned long tx_buf_mapped; |
|
563 unsigned long tx_timeouts; |
|
564 unsigned long rx_lost_in_ring; |
|
565 }; |
|
566 |
|
567 struct rtl8139_private { |
|
568 void __iomem *mmio_addr; |
|
569 int drv_flags; |
|
570 struct pci_dev *pci_dev; |
|
571 u32 msg_enable; |
|
572 struct napi_struct napi; |
|
573 struct net_device *dev; |
|
574 |
|
575 unsigned char *rx_ring; |
|
576 unsigned int cur_rx; /* RX buf index of next pkt */ |
|
577 dma_addr_t rx_ring_dma; |
|
578 |
|
579 unsigned int tx_flag; |
|
580 unsigned long cur_tx; |
|
581 unsigned long dirty_tx; |
|
582 unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */ |
|
583 unsigned char *tx_bufs; /* Tx bounce buffer region. */ |
|
584 dma_addr_t tx_bufs_dma; |
|
585 |
|
586 signed char phys[4]; /* MII device addresses. */ |
|
587 |
|
588 /* Twister tune state. */ |
|
589 char twistie, twist_row, twist_col; |
|
590 |
|
591 unsigned int watchdog_fired : 1; |
|
592 unsigned int default_port : 4; /* Last dev->if_port value. */ |
|
593 unsigned int have_thread : 1; |
|
594 |
|
595 spinlock_t lock; |
|
596 spinlock_t rx_lock; |
|
597 |
|
598 chip_t chipset; |
|
599 u32 rx_config; |
|
600 struct rtl_extra_stats xstats; |
|
601 |
|
602 struct delayed_work thread; |
|
603 |
|
604 struct mii_if_info mii; |
|
605 unsigned int regs_len; |
|
606 unsigned long fifo_copy_timeout; |
|
607 }; |
|
608 |
|
609 MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>"); |
|
610 MODULE_DESCRIPTION ("RealTek RTL-8139 Fast Ethernet driver"); |
|
611 MODULE_LICENSE("GPL"); |
|
612 MODULE_VERSION(DRV_VERSION); |
|
613 |
|
614 module_param(use_io, int, 0); |
|
615 MODULE_PARM_DESC(use_io, "Force use of I/O access mode. 0=MMIO 1=PIO"); |
|
616 module_param(multicast_filter_limit, int, 0); |
|
617 module_param_array(media, int, NULL, 0); |
|
618 module_param_array(full_duplex, int, NULL, 0); |
|
619 module_param(debug, int, 0); |
|
620 MODULE_PARM_DESC (debug, "8139too bitmapped message enable number"); |
|
621 MODULE_PARM_DESC (multicast_filter_limit, "8139too maximum number of filtered multicast addresses"); |
|
622 MODULE_PARM_DESC (media, "8139too: Bits 4+9: force full duplex, bit 5: 100Mbps"); |
|
623 MODULE_PARM_DESC (full_duplex, "8139too: Force full duplex for board(s) (1)"); |
|
624 |
|
625 static int read_eeprom (void __iomem *ioaddr, int location, int addr_len); |
|
626 static int rtl8139_open (struct net_device *dev); |
|
627 static int mdio_read (struct net_device *dev, int phy_id, int location); |
|
628 static void mdio_write (struct net_device *dev, int phy_id, int location, |
|
629 int val); |
|
630 static void rtl8139_start_thread(struct rtl8139_private *tp); |
|
631 static void rtl8139_tx_timeout (struct net_device *dev); |
|
632 static void rtl8139_init_ring (struct net_device *dev); |
|
633 static netdev_tx_t rtl8139_start_xmit (struct sk_buff *skb, |
|
634 struct net_device *dev); |
|
635 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
636 static void rtl8139_poll_controller(struct net_device *dev); |
|
637 #endif |
|
638 static int rtl8139_set_mac_address(struct net_device *dev, void *p); |
|
639 static int rtl8139_poll(struct napi_struct *napi, int budget); |
|
640 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance); |
|
641 static int rtl8139_close (struct net_device *dev); |
|
642 static int netdev_ioctl (struct net_device *dev, struct ifreq *rq, int cmd); |
|
643 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev); |
|
644 static void rtl8139_set_rx_mode (struct net_device *dev); |
|
645 static void __set_rx_mode (struct net_device *dev); |
|
646 static void rtl8139_hw_start (struct net_device *dev); |
|
647 static void rtl8139_thread (struct work_struct *work); |
|
648 static void rtl8139_tx_timeout_task(struct work_struct *work); |
|
649 static const struct ethtool_ops rtl8139_ethtool_ops; |
|
650 |
|
651 /* write MMIO register, with flush */ |
|
652 /* Flush avoids rtl8139 bug w/ posted MMIO writes */ |
|
653 #define RTL_W8_F(reg, val8) do { iowrite8 ((val8), ioaddr + (reg)); ioread8 (ioaddr + (reg)); } while (0) |
|
654 #define RTL_W16_F(reg, val16) do { iowrite16 ((val16), ioaddr + (reg)); ioread16 (ioaddr + (reg)); } while (0) |
|
655 #define RTL_W32_F(reg, val32) do { iowrite32 ((val32), ioaddr + (reg)); ioread32 (ioaddr + (reg)); } while (0) |
|
656 |
|
657 /* write MMIO register */ |
|
658 #define RTL_W8(reg, val8) iowrite8 ((val8), ioaddr + (reg)) |
|
659 #define RTL_W16(reg, val16) iowrite16 ((val16), ioaddr + (reg)) |
|
660 #define RTL_W32(reg, val32) iowrite32 ((val32), ioaddr + (reg)) |
|
661 |
|
662 /* read MMIO register */ |
|
663 #define RTL_R8(reg) ioread8 (ioaddr + (reg)) |
|
664 #define RTL_R16(reg) ioread16 (ioaddr + (reg)) |
|
665 #define RTL_R32(reg) ioread32 (ioaddr + (reg)) |
|
666 |
|
667 |
|
668 static const u16 rtl8139_intr_mask = |
|
669 PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver | |
|
670 TxErr | TxOK | RxErr | RxOK; |
|
671 |
|
672 static const u16 rtl8139_norx_intr_mask = |
|
673 PCIErr | PCSTimeout | RxUnderrun | |
|
674 TxErr | TxOK | RxErr ; |
|
675 |
|
676 #if RX_BUF_IDX == 0 |
|
677 static const unsigned int rtl8139_rx_config = |
|
678 RxCfgRcv8K | RxNoWrap | |
|
679 (RX_FIFO_THRESH << RxCfgFIFOShift) | |
|
680 (RX_DMA_BURST << RxCfgDMAShift); |
|
681 #elif RX_BUF_IDX == 1 |
|
682 static const unsigned int rtl8139_rx_config = |
|
683 RxCfgRcv16K | RxNoWrap | |
|
684 (RX_FIFO_THRESH << RxCfgFIFOShift) | |
|
685 (RX_DMA_BURST << RxCfgDMAShift); |
|
686 #elif RX_BUF_IDX == 2 |
|
687 static const unsigned int rtl8139_rx_config = |
|
688 RxCfgRcv32K | RxNoWrap | |
|
689 (RX_FIFO_THRESH << RxCfgFIFOShift) | |
|
690 (RX_DMA_BURST << RxCfgDMAShift); |
|
691 #elif RX_BUF_IDX == 3 |
|
692 static const unsigned int rtl8139_rx_config = |
|
693 RxCfgRcv64K | |
|
694 (RX_FIFO_THRESH << RxCfgFIFOShift) | |
|
695 (RX_DMA_BURST << RxCfgDMAShift); |
|
696 #else |
|
697 #error "Invalid configuration for 8139_RXBUF_IDX" |
|
698 #endif |
|
699 |
|
700 static const unsigned int rtl8139_tx_config = |
|
701 TxIFG96 | (TX_DMA_BURST << TxDMAShift) | (TX_RETRY << TxRetryShift); |
|
702 |
|
703 static void __rtl8139_cleanup_dev (struct net_device *dev) |
|
704 { |
|
705 struct rtl8139_private *tp = netdev_priv(dev); |
|
706 struct pci_dev *pdev; |
|
707 |
|
708 assert (dev != NULL); |
|
709 assert (tp->pci_dev != NULL); |
|
710 pdev = tp->pci_dev; |
|
711 |
|
712 if (tp->mmio_addr) |
|
713 pci_iounmap (pdev, tp->mmio_addr); |
|
714 |
|
715 /* it's ok to call this even if we have no regions to free */ |
|
716 pci_release_regions (pdev); |
|
717 |
|
718 free_netdev(dev); |
|
719 pci_set_drvdata (pdev, NULL); |
|
720 } |
|
721 |
|
722 |
|
723 static void rtl8139_chip_reset (void __iomem *ioaddr) |
|
724 { |
|
725 int i; |
|
726 |
|
727 /* Soft reset the chip. */ |
|
728 RTL_W8 (ChipCmd, CmdReset); |
|
729 |
|
730 /* Check that the chip has finished the reset. */ |
|
731 for (i = 1000; i > 0; i--) { |
|
732 barrier(); |
|
733 if ((RTL_R8 (ChipCmd) & CmdReset) == 0) |
|
734 break; |
|
735 udelay (10); |
|
736 } |
|
737 } |
|
738 |
|
739 |
|
740 static __devinit struct net_device * rtl8139_init_board (struct pci_dev *pdev) |
|
741 { |
|
742 void __iomem *ioaddr; |
|
743 struct net_device *dev; |
|
744 struct rtl8139_private *tp; |
|
745 u8 tmp8; |
|
746 int rc, disable_dev_on_err = 0; |
|
747 unsigned int i; |
|
748 unsigned long pio_start, pio_end, pio_flags, pio_len; |
|
749 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len; |
|
750 u32 version; |
|
751 |
|
752 assert (pdev != NULL); |
|
753 |
|
754 /* dev and priv zeroed in alloc_etherdev */ |
|
755 dev = alloc_etherdev (sizeof (*tp)); |
|
756 if (dev == NULL) { |
|
757 dev_err(&pdev->dev, "Unable to alloc new net device\n"); |
|
758 return ERR_PTR(-ENOMEM); |
|
759 } |
|
760 SET_NETDEV_DEV(dev, &pdev->dev); |
|
761 |
|
762 tp = netdev_priv(dev); |
|
763 tp->pci_dev = pdev; |
|
764 |
|
765 /* enable device (incl. PCI PM wakeup and hotplug setup) */ |
|
766 rc = pci_enable_device (pdev); |
|
767 if (rc) |
|
768 goto err_out; |
|
769 |
|
770 pio_start = pci_resource_start (pdev, 0); |
|
771 pio_end = pci_resource_end (pdev, 0); |
|
772 pio_flags = pci_resource_flags (pdev, 0); |
|
773 pio_len = pci_resource_len (pdev, 0); |
|
774 |
|
775 mmio_start = pci_resource_start (pdev, 1); |
|
776 mmio_end = pci_resource_end (pdev, 1); |
|
777 mmio_flags = pci_resource_flags (pdev, 1); |
|
778 mmio_len = pci_resource_len (pdev, 1); |
|
779 |
|
780 /* set this immediately, we need to know before |
|
781 * we talk to the chip directly */ |
|
782 pr_debug("PIO region size == 0x%02lX\n", pio_len); |
|
783 pr_debug("MMIO region size == 0x%02lX\n", mmio_len); |
|
784 |
|
785 retry: |
|
786 if (use_io) { |
|
787 /* make sure PCI base addr 0 is PIO */ |
|
788 if (!(pio_flags & IORESOURCE_IO)) { |
|
789 dev_err(&pdev->dev, "region #0 not a PIO resource, aborting\n"); |
|
790 rc = -ENODEV; |
|
791 goto err_out; |
|
792 } |
|
793 /* check for weird/broken PCI region reporting */ |
|
794 if (pio_len < RTL_MIN_IO_SIZE) { |
|
795 dev_err(&pdev->dev, "Invalid PCI I/O region size(s), aborting\n"); |
|
796 rc = -ENODEV; |
|
797 goto err_out; |
|
798 } |
|
799 } else { |
|
800 /* make sure PCI base addr 1 is MMIO */ |
|
801 if (!(mmio_flags & IORESOURCE_MEM)) { |
|
802 dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n"); |
|
803 rc = -ENODEV; |
|
804 goto err_out; |
|
805 } |
|
806 if (mmio_len < RTL_MIN_IO_SIZE) { |
|
807 dev_err(&pdev->dev, "Invalid PCI mem region size(s), aborting\n"); |
|
808 rc = -ENODEV; |
|
809 goto err_out; |
|
810 } |
|
811 } |
|
812 |
|
813 rc = pci_request_regions (pdev, DRV_NAME); |
|
814 if (rc) |
|
815 goto err_out; |
|
816 disable_dev_on_err = 1; |
|
817 |
|
818 /* enable PCI bus-mastering */ |
|
819 pci_set_master (pdev); |
|
820 |
|
821 if (use_io) { |
|
822 ioaddr = pci_iomap(pdev, 0, 0); |
|
823 if (!ioaddr) { |
|
824 dev_err(&pdev->dev, "cannot map PIO, aborting\n"); |
|
825 rc = -EIO; |
|
826 goto err_out; |
|
827 } |
|
828 dev->base_addr = pio_start; |
|
829 tp->regs_len = pio_len; |
|
830 } else { |
|
831 /* ioremap MMIO region */ |
|
832 ioaddr = pci_iomap(pdev, 1, 0); |
|
833 if (ioaddr == NULL) { |
|
834 dev_err(&pdev->dev, "cannot remap MMIO, trying PIO\n"); |
|
835 pci_release_regions(pdev); |
|
836 use_io = 1; |
|
837 goto retry; |
|
838 } |
|
839 dev->base_addr = (long) ioaddr; |
|
840 tp->regs_len = mmio_len; |
|
841 } |
|
842 tp->mmio_addr = ioaddr; |
|
843 |
|
844 /* Bring old chips out of low-power mode. */ |
|
845 RTL_W8 (HltClk, 'R'); |
|
846 |
|
847 /* check for missing/broken hardware */ |
|
848 if (RTL_R32 (TxConfig) == 0xFFFFFFFF) { |
|
849 dev_err(&pdev->dev, "Chip not responding, ignoring board\n"); |
|
850 rc = -EIO; |
|
851 goto err_out; |
|
852 } |
|
853 |
|
854 /* identify chip attached to board */ |
|
855 version = RTL_R32 (TxConfig) & HW_REVID_MASK; |
|
856 for (i = 0; i < ARRAY_SIZE (rtl_chip_info); i++) |
|
857 if (version == rtl_chip_info[i].version) { |
|
858 tp->chipset = i; |
|
859 goto match; |
|
860 } |
|
861 |
|
862 /* if unknown chip, assume array element #0, original RTL-8139 in this case */ |
|
863 i = 0; |
|
864 dev_dbg(&pdev->dev, "unknown chip version, assuming RTL-8139\n"); |
|
865 dev_dbg(&pdev->dev, "TxConfig = 0x%x\n", RTL_R32 (TxConfig)); |
|
866 tp->chipset = 0; |
|
867 |
|
868 match: |
|
869 pr_debug("chipset id (%d) == index %d, '%s'\n", |
|
870 version, i, rtl_chip_info[i].name); |
|
871 |
|
872 if (tp->chipset >= CH_8139B) { |
|
873 u8 new_tmp8 = tmp8 = RTL_R8 (Config1); |
|
874 pr_debug("PCI PM wakeup\n"); |
|
875 if ((rtl_chip_info[tp->chipset].flags & HasLWake) && |
|
876 (tmp8 & LWAKE)) |
|
877 new_tmp8 &= ~LWAKE; |
|
878 new_tmp8 |= Cfg1_PM_Enable; |
|
879 if (new_tmp8 != tmp8) { |
|
880 RTL_W8 (Cfg9346, Cfg9346_Unlock); |
|
881 RTL_W8 (Config1, tmp8); |
|
882 RTL_W8 (Cfg9346, Cfg9346_Lock); |
|
883 } |
|
884 if (rtl_chip_info[tp->chipset].flags & HasLWake) { |
|
885 tmp8 = RTL_R8 (Config4); |
|
886 if (tmp8 & LWPTN) { |
|
887 RTL_W8 (Cfg9346, Cfg9346_Unlock); |
|
888 RTL_W8 (Config4, tmp8 & ~LWPTN); |
|
889 RTL_W8 (Cfg9346, Cfg9346_Lock); |
|
890 } |
|
891 } |
|
892 } else { |
|
893 pr_debug("Old chip wakeup\n"); |
|
894 tmp8 = RTL_R8 (Config1); |
|
895 tmp8 &= ~(SLEEP | PWRDN); |
|
896 RTL_W8 (Config1, tmp8); |
|
897 } |
|
898 |
|
899 rtl8139_chip_reset (ioaddr); |
|
900 |
|
901 return dev; |
|
902 |
|
903 err_out: |
|
904 __rtl8139_cleanup_dev (dev); |
|
905 if (disable_dev_on_err) |
|
906 pci_disable_device (pdev); |
|
907 return ERR_PTR(rc); |
|
908 } |
|
909 |
|
910 static const struct net_device_ops rtl8139_netdev_ops = { |
|
911 .ndo_open = rtl8139_open, |
|
912 .ndo_stop = rtl8139_close, |
|
913 .ndo_get_stats = rtl8139_get_stats, |
|
914 .ndo_change_mtu = eth_change_mtu, |
|
915 .ndo_validate_addr = eth_validate_addr, |
|
916 .ndo_set_mac_address = rtl8139_set_mac_address, |
|
917 .ndo_start_xmit = rtl8139_start_xmit, |
|
918 .ndo_set_multicast_list = rtl8139_set_rx_mode, |
|
919 .ndo_do_ioctl = netdev_ioctl, |
|
920 .ndo_tx_timeout = rtl8139_tx_timeout, |
|
921 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
922 .ndo_poll_controller = rtl8139_poll_controller, |
|
923 #endif |
|
924 }; |
|
925 |
|
926 static int __devinit rtl8139_init_one (struct pci_dev *pdev, |
|
927 const struct pci_device_id *ent) |
|
928 { |
|
929 struct net_device *dev = NULL; |
|
930 struct rtl8139_private *tp; |
|
931 int i, addr_len, option; |
|
932 void __iomem *ioaddr; |
|
933 static int board_idx = -1; |
|
934 |
|
935 assert (pdev != NULL); |
|
936 assert (ent != NULL); |
|
937 |
|
938 board_idx++; |
|
939 |
|
940 /* when we're built into the kernel, the driver version message |
|
941 * is only printed if at least one 8139 board has been found |
|
942 */ |
|
943 #ifndef MODULE |
|
944 { |
|
945 static int printed_version; |
|
946 if (!printed_version++) |
|
947 pr_info(RTL8139_DRIVER_NAME "\n"); |
|
948 } |
|
949 #endif |
|
950 |
|
951 if (pdev->vendor == PCI_VENDOR_ID_REALTEK && |
|
952 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision >= 0x20) { |
|
953 dev_info(&pdev->dev, |
|
954 "This (id %04x:%04x rev %02x) is an enhanced 8139C+ chip, use 8139cp\n", |
|
955 pdev->vendor, pdev->device, pdev->revision); |
|
956 return -ENODEV; |
|
957 } |
|
958 |
|
959 if (pdev->vendor == PCI_VENDOR_ID_REALTEK && |
|
960 pdev->device == PCI_DEVICE_ID_REALTEK_8139 && |
|
961 pdev->subsystem_vendor == PCI_VENDOR_ID_ATHEROS && |
|
962 pdev->subsystem_device == PCI_DEVICE_ID_REALTEK_8139) { |
|
963 pr_info("OQO Model 2 detected. Forcing PIO\n"); |
|
964 use_io = 1; |
|
965 } |
|
966 |
|
967 dev = rtl8139_init_board (pdev); |
|
968 if (IS_ERR(dev)) |
|
969 return PTR_ERR(dev); |
|
970 |
|
971 assert (dev != NULL); |
|
972 tp = netdev_priv(dev); |
|
973 tp->dev = dev; |
|
974 |
|
975 ioaddr = tp->mmio_addr; |
|
976 assert (ioaddr != NULL); |
|
977 |
|
978 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6; |
|
979 for (i = 0; i < 3; i++) |
|
980 ((__le16 *) (dev->dev_addr))[i] = |
|
981 cpu_to_le16(read_eeprom (ioaddr, i + 7, addr_len)); |
|
982 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); |
|
983 |
|
984 /* The Rtl8139-specific entries in the device structure. */ |
|
985 dev->netdev_ops = &rtl8139_netdev_ops; |
|
986 dev->ethtool_ops = &rtl8139_ethtool_ops; |
|
987 dev->watchdog_timeo = TX_TIMEOUT; |
|
988 netif_napi_add(dev, &tp->napi, rtl8139_poll, 64); |
|
989 |
|
990 /* note: the hardware is not capable of sg/csum/highdma, however |
|
991 * through the use of skb_copy_and_csum_dev we enable these |
|
992 * features |
|
993 */ |
|
994 dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA; |
|
995 dev->vlan_features = dev->features; |
|
996 |
|
997 dev->irq = pdev->irq; |
|
998 |
|
999 /* tp zeroed and aligned in alloc_etherdev */ |
|
1000 tp = netdev_priv(dev); |
|
1001 |
|
1002 /* note: tp->chipset set in rtl8139_init_board */ |
|
1003 tp->drv_flags = board_info[ent->driver_data].hw_flags; |
|
1004 tp->mmio_addr = ioaddr; |
|
1005 tp->msg_enable = |
|
1006 (debug < 0 ? RTL8139_DEF_MSG_ENABLE : ((1 << debug) - 1)); |
|
1007 spin_lock_init (&tp->lock); |
|
1008 spin_lock_init (&tp->rx_lock); |
|
1009 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread); |
|
1010 tp->mii.dev = dev; |
|
1011 tp->mii.mdio_read = mdio_read; |
|
1012 tp->mii.mdio_write = mdio_write; |
|
1013 tp->mii.phy_id_mask = 0x3f; |
|
1014 tp->mii.reg_num_mask = 0x1f; |
|
1015 |
|
1016 /* dev is fully set up and ready to use now */ |
|
1017 pr_debug("about to register device named %s (%p)...\n", |
|
1018 dev->name, dev); |
|
1019 i = register_netdev (dev); |
|
1020 if (i) goto err_out; |
|
1021 |
|
1022 pci_set_drvdata (pdev, dev); |
|
1023 |
|
1024 netdev_info(dev, "%s at 0x%lx, %pM, IRQ %d\n", |
|
1025 board_info[ent->driver_data].name, |
|
1026 dev->base_addr, dev->dev_addr, dev->irq); |
|
1027 |
|
1028 netdev_dbg(dev, "Identified 8139 chip type '%s'\n", |
|
1029 rtl_chip_info[tp->chipset].name); |
|
1030 |
|
1031 /* Find the connected MII xcvrs. |
|
1032 Doing this in open() would allow detecting external xcvrs later, but |
|
1033 takes too much time. */ |
|
1034 #ifdef CONFIG_8139TOO_8129 |
|
1035 if (tp->drv_flags & HAS_MII_XCVR) { |
|
1036 int phy, phy_idx = 0; |
|
1037 for (phy = 0; phy < 32 && phy_idx < sizeof(tp->phys); phy++) { |
|
1038 int mii_status = mdio_read(dev, phy, 1); |
|
1039 if (mii_status != 0xffff && mii_status != 0x0000) { |
|
1040 u16 advertising = mdio_read(dev, phy, 4); |
|
1041 tp->phys[phy_idx++] = phy; |
|
1042 netdev_info(dev, "MII transceiver %d status 0x%04x advertising %04x\n", |
|
1043 phy, mii_status, advertising); |
|
1044 } |
|
1045 } |
|
1046 if (phy_idx == 0) { |
|
1047 netdev_info(dev, "No MII transceivers found! Assuming SYM transceiver\n"); |
|
1048 tp->phys[0] = 32; |
|
1049 } |
|
1050 } else |
|
1051 #endif |
|
1052 tp->phys[0] = 32; |
|
1053 tp->mii.phy_id = tp->phys[0]; |
|
1054 |
|
1055 /* The lower four bits are the media type. */ |
|
1056 option = (board_idx >= MAX_UNITS) ? 0 : media[board_idx]; |
|
1057 if (option > 0) { |
|
1058 tp->mii.full_duplex = (option & 0x210) ? 1 : 0; |
|
1059 tp->default_port = option & 0xFF; |
|
1060 if (tp->default_port) |
|
1061 tp->mii.force_media = 1; |
|
1062 } |
|
1063 if (board_idx < MAX_UNITS && full_duplex[board_idx] > 0) |
|
1064 tp->mii.full_duplex = full_duplex[board_idx]; |
|
1065 if (tp->mii.full_duplex) { |
|
1066 netdev_info(dev, "Media type forced to Full Duplex\n"); |
|
1067 /* Changing the MII-advertised media because might prevent |
|
1068 re-connection. */ |
|
1069 tp->mii.force_media = 1; |
|
1070 } |
|
1071 if (tp->default_port) { |
|
1072 netdev_info(dev, " Forcing %dMbps %s-duplex operation\n", |
|
1073 (option & 0x20 ? 100 : 10), |
|
1074 (option & 0x10 ? "full" : "half")); |
|
1075 mdio_write(dev, tp->phys[0], 0, |
|
1076 ((option & 0x20) ? 0x2000 : 0) | /* 100Mbps? */ |
|
1077 ((option & 0x10) ? 0x0100 : 0)); /* Full duplex? */ |
|
1078 } |
|
1079 |
|
1080 /* Put the chip into low-power mode. */ |
|
1081 if (rtl_chip_info[tp->chipset].flags & HasHltClk) |
|
1082 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */ |
|
1083 |
|
1084 return 0; |
|
1085 |
|
1086 err_out: |
|
1087 __rtl8139_cleanup_dev (dev); |
|
1088 pci_disable_device (pdev); |
|
1089 return i; |
|
1090 } |
|
1091 |
|
1092 |
|
1093 static void __devexit rtl8139_remove_one (struct pci_dev *pdev) |
|
1094 { |
|
1095 struct net_device *dev = pci_get_drvdata (pdev); |
|
1096 struct rtl8139_private *tp = netdev_priv(dev); |
|
1097 |
|
1098 assert (dev != NULL); |
|
1099 |
|
1100 cancel_delayed_work_sync(&tp->thread); |
|
1101 |
|
1102 unregister_netdev (dev); |
|
1103 |
|
1104 __rtl8139_cleanup_dev (dev); |
|
1105 pci_disable_device (pdev); |
|
1106 } |
|
1107 |
|
1108 |
|
1109 /* Serial EEPROM section. */ |
|
1110 |
|
1111 /* EEPROM_Ctrl bits. */ |
|
1112 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */ |
|
1113 #define EE_CS 0x08 /* EEPROM chip select. */ |
|
1114 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */ |
|
1115 #define EE_WRITE_0 0x00 |
|
1116 #define EE_WRITE_1 0x02 |
|
1117 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */ |
|
1118 #define EE_ENB (0x80 | EE_CS) |
|
1119 |
|
1120 /* Delay between EEPROM clock transitions. |
|
1121 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this. |
|
1122 */ |
|
1123 |
|
1124 #define eeprom_delay() (void)RTL_R32(Cfg9346) |
|
1125 |
|
1126 /* The EEPROM commands include the alway-set leading bit. */ |
|
1127 #define EE_WRITE_CMD (5) |
|
1128 #define EE_READ_CMD (6) |
|
1129 #define EE_ERASE_CMD (7) |
|
1130 |
|
1131 static int __devinit read_eeprom (void __iomem *ioaddr, int location, int addr_len) |
|
1132 { |
|
1133 int i; |
|
1134 unsigned retval = 0; |
|
1135 int read_cmd = location | (EE_READ_CMD << addr_len); |
|
1136 |
|
1137 RTL_W8 (Cfg9346, EE_ENB & ~EE_CS); |
|
1138 RTL_W8 (Cfg9346, EE_ENB); |
|
1139 eeprom_delay (); |
|
1140 |
|
1141 /* Shift the read command bits out. */ |
|
1142 for (i = 4 + addr_len; i >= 0; i--) { |
|
1143 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0; |
|
1144 RTL_W8 (Cfg9346, EE_ENB | dataval); |
|
1145 eeprom_delay (); |
|
1146 RTL_W8 (Cfg9346, EE_ENB | dataval | EE_SHIFT_CLK); |
|
1147 eeprom_delay (); |
|
1148 } |
|
1149 RTL_W8 (Cfg9346, EE_ENB); |
|
1150 eeprom_delay (); |
|
1151 |
|
1152 for (i = 16; i > 0; i--) { |
|
1153 RTL_W8 (Cfg9346, EE_ENB | EE_SHIFT_CLK); |
|
1154 eeprom_delay (); |
|
1155 retval = |
|
1156 (retval << 1) | ((RTL_R8 (Cfg9346) & EE_DATA_READ) ? 1 : |
|
1157 0); |
|
1158 RTL_W8 (Cfg9346, EE_ENB); |
|
1159 eeprom_delay (); |
|
1160 } |
|
1161 |
|
1162 /* Terminate the EEPROM access. */ |
|
1163 RTL_W8 (Cfg9346, ~EE_CS); |
|
1164 eeprom_delay (); |
|
1165 |
|
1166 return retval; |
|
1167 } |
|
1168 |
|
1169 /* MII serial management: mostly bogus for now. */ |
|
1170 /* Read and write the MII management registers using software-generated |
|
1171 serial MDIO protocol. |
|
1172 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually |
|
1173 met by back-to-back PCI I/O cycles, but we insert a delay to avoid |
|
1174 "overclocking" issues. */ |
|
1175 #define MDIO_DIR 0x80 |
|
1176 #define MDIO_DATA_OUT 0x04 |
|
1177 #define MDIO_DATA_IN 0x02 |
|
1178 #define MDIO_CLK 0x01 |
|
1179 #define MDIO_WRITE0 (MDIO_DIR) |
|
1180 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT) |
|
1181 |
|
1182 #define mdio_delay() RTL_R8(Config4) |
|
1183 |
|
1184 |
|
1185 static const char mii_2_8139_map[8] = { |
|
1186 BasicModeCtrl, |
|
1187 BasicModeStatus, |
|
1188 0, |
|
1189 0, |
|
1190 NWayAdvert, |
|
1191 NWayLPAR, |
|
1192 NWayExpansion, |
|
1193 0 |
|
1194 }; |
|
1195 |
|
1196 |
|
1197 #ifdef CONFIG_8139TOO_8129 |
|
1198 /* Syncronize the MII management interface by shifting 32 one bits out. */ |
|
1199 static void mdio_sync (void __iomem *ioaddr) |
|
1200 { |
|
1201 int i; |
|
1202 |
|
1203 for (i = 32; i >= 0; i--) { |
|
1204 RTL_W8 (Config4, MDIO_WRITE1); |
|
1205 mdio_delay (); |
|
1206 RTL_W8 (Config4, MDIO_WRITE1 | MDIO_CLK); |
|
1207 mdio_delay (); |
|
1208 } |
|
1209 } |
|
1210 #endif |
|
1211 |
|
1212 static int mdio_read (struct net_device *dev, int phy_id, int location) |
|
1213 { |
|
1214 struct rtl8139_private *tp = netdev_priv(dev); |
|
1215 int retval = 0; |
|
1216 #ifdef CONFIG_8139TOO_8129 |
|
1217 void __iomem *ioaddr = tp->mmio_addr; |
|
1218 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location; |
|
1219 int i; |
|
1220 #endif |
|
1221 |
|
1222 if (phy_id > 31) { /* Really a 8139. Use internal registers. */ |
|
1223 void __iomem *ioaddr = tp->mmio_addr; |
|
1224 return location < 8 && mii_2_8139_map[location] ? |
|
1225 RTL_R16 (mii_2_8139_map[location]) : 0; |
|
1226 } |
|
1227 |
|
1228 #ifdef CONFIG_8139TOO_8129 |
|
1229 mdio_sync (ioaddr); |
|
1230 /* Shift the read command bits out. */ |
|
1231 for (i = 15; i >= 0; i--) { |
|
1232 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0; |
|
1233 |
|
1234 RTL_W8 (Config4, MDIO_DIR | dataval); |
|
1235 mdio_delay (); |
|
1236 RTL_W8 (Config4, MDIO_DIR | dataval | MDIO_CLK); |
|
1237 mdio_delay (); |
|
1238 } |
|
1239 |
|
1240 /* Read the two transition, 16 data, and wire-idle bits. */ |
|
1241 for (i = 19; i > 0; i--) { |
|
1242 RTL_W8 (Config4, 0); |
|
1243 mdio_delay (); |
|
1244 retval = (retval << 1) | ((RTL_R8 (Config4) & MDIO_DATA_IN) ? 1 : 0); |
|
1245 RTL_W8 (Config4, MDIO_CLK); |
|
1246 mdio_delay (); |
|
1247 } |
|
1248 #endif |
|
1249 |
|
1250 return (retval >> 1) & 0xffff; |
|
1251 } |
|
1252 |
|
1253 |
|
1254 static void mdio_write (struct net_device *dev, int phy_id, int location, |
|
1255 int value) |
|
1256 { |
|
1257 struct rtl8139_private *tp = netdev_priv(dev); |
|
1258 #ifdef CONFIG_8139TOO_8129 |
|
1259 void __iomem *ioaddr = tp->mmio_addr; |
|
1260 int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location << 18) | value; |
|
1261 int i; |
|
1262 #endif |
|
1263 |
|
1264 if (phy_id > 31) { /* Really a 8139. Use internal registers. */ |
|
1265 void __iomem *ioaddr = tp->mmio_addr; |
|
1266 if (location == 0) { |
|
1267 RTL_W8 (Cfg9346, Cfg9346_Unlock); |
|
1268 RTL_W16 (BasicModeCtrl, value); |
|
1269 RTL_W8 (Cfg9346, Cfg9346_Lock); |
|
1270 } else if (location < 8 && mii_2_8139_map[location]) |
|
1271 RTL_W16 (mii_2_8139_map[location], value); |
|
1272 return; |
|
1273 } |
|
1274 |
|
1275 #ifdef CONFIG_8139TOO_8129 |
|
1276 mdio_sync (ioaddr); |
|
1277 |
|
1278 /* Shift the command bits out. */ |
|
1279 for (i = 31; i >= 0; i--) { |
|
1280 int dataval = |
|
1281 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; |
|
1282 RTL_W8 (Config4, dataval); |
|
1283 mdio_delay (); |
|
1284 RTL_W8 (Config4, dataval | MDIO_CLK); |
|
1285 mdio_delay (); |
|
1286 } |
|
1287 /* Clear out extra bits. */ |
|
1288 for (i = 2; i > 0; i--) { |
|
1289 RTL_W8 (Config4, 0); |
|
1290 mdio_delay (); |
|
1291 RTL_W8 (Config4, MDIO_CLK); |
|
1292 mdio_delay (); |
|
1293 } |
|
1294 #endif |
|
1295 } |
|
1296 |
|
1297 |
|
1298 static int rtl8139_open (struct net_device *dev) |
|
1299 { |
|
1300 struct rtl8139_private *tp = netdev_priv(dev); |
|
1301 int retval; |
|
1302 void __iomem *ioaddr = tp->mmio_addr; |
|
1303 |
|
1304 retval = request_irq (dev->irq, rtl8139_interrupt, IRQF_SHARED, dev->name, dev); |
|
1305 if (retval) |
|
1306 return retval; |
|
1307 |
|
1308 tp->tx_bufs = dma_alloc_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN, |
|
1309 &tp->tx_bufs_dma, GFP_KERNEL); |
|
1310 tp->rx_ring = dma_alloc_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN, |
|
1311 &tp->rx_ring_dma, GFP_KERNEL); |
|
1312 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) { |
|
1313 free_irq(dev->irq, dev); |
|
1314 |
|
1315 if (tp->tx_bufs) |
|
1316 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN, |
|
1317 tp->tx_bufs, tp->tx_bufs_dma); |
|
1318 if (tp->rx_ring) |
|
1319 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN, |
|
1320 tp->rx_ring, tp->rx_ring_dma); |
|
1321 |
|
1322 return -ENOMEM; |
|
1323 |
|
1324 } |
|
1325 |
|
1326 napi_enable(&tp->napi); |
|
1327 |
|
1328 tp->mii.full_duplex = tp->mii.force_media; |
|
1329 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000; |
|
1330 |
|
1331 rtl8139_init_ring (dev); |
|
1332 rtl8139_hw_start (dev); |
|
1333 netif_start_queue (dev); |
|
1334 |
|
1335 netif_dbg(tp, ifup, dev, |
|
1336 "%s() ioaddr %#llx IRQ %d GP Pins %02x %s-duplex\n", |
|
1337 __func__, |
|
1338 (unsigned long long)pci_resource_start (tp->pci_dev, 1), |
|
1339 dev->irq, RTL_R8 (MediaStatus), |
|
1340 tp->mii.full_duplex ? "full" : "half"); |
|
1341 |
|
1342 rtl8139_start_thread(tp); |
|
1343 |
|
1344 return 0; |
|
1345 } |
|
1346 |
|
1347 |
|
1348 static void rtl_check_media (struct net_device *dev, unsigned int init_media) |
|
1349 { |
|
1350 struct rtl8139_private *tp = netdev_priv(dev); |
|
1351 |
|
1352 if (tp->phys[0] >= 0) { |
|
1353 mii_check_media(&tp->mii, netif_msg_link(tp), init_media); |
|
1354 } |
|
1355 } |
|
1356 |
|
1357 /* Start the hardware at open or resume. */ |
|
1358 static void rtl8139_hw_start (struct net_device *dev) |
|
1359 { |
|
1360 struct rtl8139_private *tp = netdev_priv(dev); |
|
1361 void __iomem *ioaddr = tp->mmio_addr; |
|
1362 u32 i; |
|
1363 u8 tmp; |
|
1364 |
|
1365 /* Bring old chips out of low-power mode. */ |
|
1366 if (rtl_chip_info[tp->chipset].flags & HasHltClk) |
|
1367 RTL_W8 (HltClk, 'R'); |
|
1368 |
|
1369 rtl8139_chip_reset (ioaddr); |
|
1370 |
|
1371 /* unlock Config[01234] and BMCR register writes */ |
|
1372 RTL_W8_F (Cfg9346, Cfg9346_Unlock); |
|
1373 /* Restore our idea of the MAC address. */ |
|
1374 RTL_W32_F (MAC0 + 0, le32_to_cpu (*(__le32 *) (dev->dev_addr + 0))); |
|
1375 RTL_W32_F (MAC0 + 4, le16_to_cpu (*(__le16 *) (dev->dev_addr + 4))); |
|
1376 |
|
1377 tp->cur_rx = 0; |
|
1378 |
|
1379 /* init Rx ring buffer DMA address */ |
|
1380 RTL_W32_F (RxBuf, tp->rx_ring_dma); |
|
1381 |
|
1382 /* Must enable Tx/Rx before setting transfer thresholds! */ |
|
1383 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb); |
|
1384 |
|
1385 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys; |
|
1386 RTL_W32 (RxConfig, tp->rx_config); |
|
1387 RTL_W32 (TxConfig, rtl8139_tx_config); |
|
1388 |
|
1389 rtl_check_media (dev, 1); |
|
1390 |
|
1391 if (tp->chipset >= CH_8139B) { |
|
1392 /* Disable magic packet scanning, which is enabled |
|
1393 * when PM is enabled in Config1. It can be reenabled |
|
1394 * via ETHTOOL_SWOL if desired. */ |
|
1395 RTL_W8 (Config3, RTL_R8 (Config3) & ~Cfg3_Magic); |
|
1396 } |
|
1397 |
|
1398 netdev_dbg(dev, "init buffer addresses\n"); |
|
1399 |
|
1400 /* Lock Config[01234] and BMCR register writes */ |
|
1401 RTL_W8 (Cfg9346, Cfg9346_Lock); |
|
1402 |
|
1403 /* init Tx buffer DMA addresses */ |
|
1404 for (i = 0; i < NUM_TX_DESC; i++) |
|
1405 RTL_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs)); |
|
1406 |
|
1407 RTL_W32 (RxMissed, 0); |
|
1408 |
|
1409 rtl8139_set_rx_mode (dev); |
|
1410 |
|
1411 /* no early-rx interrupts */ |
|
1412 RTL_W16 (MultiIntr, RTL_R16 (MultiIntr) & MultiIntrClear); |
|
1413 |
|
1414 /* make sure RxTx has started */ |
|
1415 tmp = RTL_R8 (ChipCmd); |
|
1416 if ((!(tmp & CmdRxEnb)) || (!(tmp & CmdTxEnb))) |
|
1417 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb); |
|
1418 |
|
1419 /* Enable all known interrupts by setting the interrupt mask. */ |
|
1420 RTL_W16 (IntrMask, rtl8139_intr_mask); |
|
1421 } |
|
1422 |
|
1423 |
|
1424 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ |
|
1425 static void rtl8139_init_ring (struct net_device *dev) |
|
1426 { |
|
1427 struct rtl8139_private *tp = netdev_priv(dev); |
|
1428 int i; |
|
1429 |
|
1430 tp->cur_rx = 0; |
|
1431 tp->cur_tx = 0; |
|
1432 tp->dirty_tx = 0; |
|
1433 |
|
1434 for (i = 0; i < NUM_TX_DESC; i++) |
|
1435 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE]; |
|
1436 } |
|
1437 |
|
1438 |
|
1439 /* This must be global for CONFIG_8139TOO_TUNE_TWISTER case */ |
|
1440 static int next_tick = 3 * HZ; |
|
1441 |
|
1442 #ifndef CONFIG_8139TOO_TUNE_TWISTER |
|
1443 static inline void rtl8139_tune_twister (struct net_device *dev, |
|
1444 struct rtl8139_private *tp) {} |
|
1445 #else |
|
1446 enum TwisterParamVals { |
|
1447 PARA78_default = 0x78fa8388, |
|
1448 PARA7c_default = 0xcb38de43, /* param[0][3] */ |
|
1449 PARA7c_xxx = 0xcb38de43, |
|
1450 }; |
|
1451 |
|
1452 static const unsigned long param[4][4] = { |
|
1453 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43}, |
|
1454 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83}, |
|
1455 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83}, |
|
1456 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83} |
|
1457 }; |
|
1458 |
|
1459 static void rtl8139_tune_twister (struct net_device *dev, |
|
1460 struct rtl8139_private *tp) |
|
1461 { |
|
1462 int linkcase; |
|
1463 void __iomem *ioaddr = tp->mmio_addr; |
|
1464 |
|
1465 /* This is a complicated state machine to configure the "twister" for |
|
1466 impedance/echos based on the cable length. |
|
1467 All of this is magic and undocumented. |
|
1468 */ |
|
1469 switch (tp->twistie) { |
|
1470 case 1: |
|
1471 if (RTL_R16 (CSCR) & CSCR_LinkOKBit) { |
|
1472 /* We have link beat, let us tune the twister. */ |
|
1473 RTL_W16 (CSCR, CSCR_LinkDownOffCmd); |
|
1474 tp->twistie = 2; /* Change to state 2. */ |
|
1475 next_tick = HZ / 10; |
|
1476 } else { |
|
1477 /* Just put in some reasonable defaults for when beat returns. */ |
|
1478 RTL_W16 (CSCR, CSCR_LinkDownCmd); |
|
1479 RTL_W32 (FIFOTMS, 0x20); /* Turn on cable test mode. */ |
|
1480 RTL_W32 (PARA78, PARA78_default); |
|
1481 RTL_W32 (PARA7c, PARA7c_default); |
|
1482 tp->twistie = 0; /* Bail from future actions. */ |
|
1483 } |
|
1484 break; |
|
1485 case 2: |
|
1486 /* Read how long it took to hear the echo. */ |
|
1487 linkcase = RTL_R16 (CSCR) & CSCR_LinkStatusBits; |
|
1488 if (linkcase == 0x7000) |
|
1489 tp->twist_row = 3; |
|
1490 else if (linkcase == 0x3000) |
|
1491 tp->twist_row = 2; |
|
1492 else if (linkcase == 0x1000) |
|
1493 tp->twist_row = 1; |
|
1494 else |
|
1495 tp->twist_row = 0; |
|
1496 tp->twist_col = 0; |
|
1497 tp->twistie = 3; /* Change to state 2. */ |
|
1498 next_tick = HZ / 10; |
|
1499 break; |
|
1500 case 3: |
|
1501 /* Put out four tuning parameters, one per 100msec. */ |
|
1502 if (tp->twist_col == 0) |
|
1503 RTL_W16 (FIFOTMS, 0); |
|
1504 RTL_W32 (PARA7c, param[(int) tp->twist_row] |
|
1505 [(int) tp->twist_col]); |
|
1506 next_tick = HZ / 10; |
|
1507 if (++tp->twist_col >= 4) { |
|
1508 /* For short cables we are done. |
|
1509 For long cables (row == 3) check for mistune. */ |
|
1510 tp->twistie = |
|
1511 (tp->twist_row == 3) ? 4 : 0; |
|
1512 } |
|
1513 break; |
|
1514 case 4: |
|
1515 /* Special case for long cables: check for mistune. */ |
|
1516 if ((RTL_R16 (CSCR) & |
|
1517 CSCR_LinkStatusBits) == 0x7000) { |
|
1518 tp->twistie = 0; |
|
1519 break; |
|
1520 } else { |
|
1521 RTL_W32 (PARA7c, 0xfb38de03); |
|
1522 tp->twistie = 5; |
|
1523 next_tick = HZ / 10; |
|
1524 } |
|
1525 break; |
|
1526 case 5: |
|
1527 /* Retune for shorter cable (column 2). */ |
|
1528 RTL_W32 (FIFOTMS, 0x20); |
|
1529 RTL_W32 (PARA78, PARA78_default); |
|
1530 RTL_W32 (PARA7c, PARA7c_default); |
|
1531 RTL_W32 (FIFOTMS, 0x00); |
|
1532 tp->twist_row = 2; |
|
1533 tp->twist_col = 0; |
|
1534 tp->twistie = 3; |
|
1535 next_tick = HZ / 10; |
|
1536 break; |
|
1537 |
|
1538 default: |
|
1539 /* do nothing */ |
|
1540 break; |
|
1541 } |
|
1542 } |
|
1543 #endif /* CONFIG_8139TOO_TUNE_TWISTER */ |
|
1544 |
|
1545 static inline void rtl8139_thread_iter (struct net_device *dev, |
|
1546 struct rtl8139_private *tp, |
|
1547 void __iomem *ioaddr) |
|
1548 { |
|
1549 int mii_lpa; |
|
1550 |
|
1551 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA); |
|
1552 |
|
1553 if (!tp->mii.force_media && mii_lpa != 0xffff) { |
|
1554 int duplex = ((mii_lpa & LPA_100FULL) || |
|
1555 (mii_lpa & 0x01C0) == 0x0040); |
|
1556 if (tp->mii.full_duplex != duplex) { |
|
1557 tp->mii.full_duplex = duplex; |
|
1558 |
|
1559 if (mii_lpa) { |
|
1560 netdev_info(dev, "Setting %s-duplex based on MII #%d link partner ability of %04x\n", |
|
1561 tp->mii.full_duplex ? "full" : "half", |
|
1562 tp->phys[0], mii_lpa); |
|
1563 } else { |
|
1564 netdev_info(dev, "media is unconnected, link down, or incompatible connection\n"); |
|
1565 } |
|
1566 #if 0 |
|
1567 RTL_W8 (Cfg9346, Cfg9346_Unlock); |
|
1568 RTL_W8 (Config1, tp->mii.full_duplex ? 0x60 : 0x20); |
|
1569 RTL_W8 (Cfg9346, Cfg9346_Lock); |
|
1570 #endif |
|
1571 } |
|
1572 } |
|
1573 |
|
1574 next_tick = HZ * 60; |
|
1575 |
|
1576 rtl8139_tune_twister (dev, tp); |
|
1577 |
|
1578 netdev_dbg(dev, "Media selection tick, Link partner %04x\n", |
|
1579 RTL_R16(NWayLPAR)); |
|
1580 netdev_dbg(dev, "Other registers are IntMask %04x IntStatus %04x\n", |
|
1581 RTL_R16(IntrMask), RTL_R16(IntrStatus)); |
|
1582 netdev_dbg(dev, "Chip config %02x %02x\n", |
|
1583 RTL_R8(Config0), RTL_R8(Config1)); |
|
1584 } |
|
1585 |
|
1586 static void rtl8139_thread (struct work_struct *work) |
|
1587 { |
|
1588 struct rtl8139_private *tp = |
|
1589 container_of(work, struct rtl8139_private, thread.work); |
|
1590 struct net_device *dev = tp->mii.dev; |
|
1591 unsigned long thr_delay = next_tick; |
|
1592 |
|
1593 rtnl_lock(); |
|
1594 |
|
1595 if (!netif_running(dev)) |
|
1596 goto out_unlock; |
|
1597 |
|
1598 if (tp->watchdog_fired) { |
|
1599 tp->watchdog_fired = 0; |
|
1600 rtl8139_tx_timeout_task(work); |
|
1601 } else |
|
1602 rtl8139_thread_iter(dev, tp, tp->mmio_addr); |
|
1603 |
|
1604 if (tp->have_thread) |
|
1605 schedule_delayed_work(&tp->thread, thr_delay); |
|
1606 out_unlock: |
|
1607 rtnl_unlock (); |
|
1608 } |
|
1609 |
|
1610 static void rtl8139_start_thread(struct rtl8139_private *tp) |
|
1611 { |
|
1612 tp->twistie = 0; |
|
1613 if (tp->chipset == CH_8139_K) |
|
1614 tp->twistie = 1; |
|
1615 else if (tp->drv_flags & HAS_LNK_CHNG) |
|
1616 return; |
|
1617 |
|
1618 tp->have_thread = 1; |
|
1619 tp->watchdog_fired = 0; |
|
1620 |
|
1621 schedule_delayed_work(&tp->thread, next_tick); |
|
1622 } |
|
1623 |
|
1624 static inline void rtl8139_tx_clear (struct rtl8139_private *tp) |
|
1625 { |
|
1626 tp->cur_tx = 0; |
|
1627 tp->dirty_tx = 0; |
|
1628 |
|
1629 /* XXX account for unsent Tx packets in tp->stats.tx_dropped */ |
|
1630 } |
|
1631 |
|
1632 static void rtl8139_tx_timeout_task (struct work_struct *work) |
|
1633 { |
|
1634 struct rtl8139_private *tp = |
|
1635 container_of(work, struct rtl8139_private, thread.work); |
|
1636 struct net_device *dev = tp->mii.dev; |
|
1637 void __iomem *ioaddr = tp->mmio_addr; |
|
1638 int i; |
|
1639 u8 tmp8; |
|
1640 |
|
1641 netdev_dbg(dev, "Transmit timeout, status %02x %04x %04x media %02x\n", |
|
1642 RTL_R8(ChipCmd), RTL_R16(IntrStatus), |
|
1643 RTL_R16(IntrMask), RTL_R8(MediaStatus)); |
|
1644 /* Emit info to figure out what went wrong. */ |
|
1645 netdev_dbg(dev, "Tx queue start entry %ld dirty entry %ld\n", |
|
1646 tp->cur_tx, tp->dirty_tx); |
|
1647 for (i = 0; i < NUM_TX_DESC; i++) |
|
1648 netdev_dbg(dev, "Tx descriptor %d is %08x%s\n", |
|
1649 i, RTL_R32(TxStatus0 + (i * 4)), |
|
1650 i == tp->dirty_tx % NUM_TX_DESC ? |
|
1651 " (queue head)" : ""); |
|
1652 |
|
1653 tp->xstats.tx_timeouts++; |
|
1654 |
|
1655 /* disable Tx ASAP, if not already */ |
|
1656 tmp8 = RTL_R8 (ChipCmd); |
|
1657 if (tmp8 & CmdTxEnb) |
|
1658 RTL_W8 (ChipCmd, CmdRxEnb); |
|
1659 |
|
1660 spin_lock_bh(&tp->rx_lock); |
|
1661 /* Disable interrupts by clearing the interrupt mask. */ |
|
1662 RTL_W16 (IntrMask, 0x0000); |
|
1663 |
|
1664 /* Stop a shared interrupt from scavenging while we are. */ |
|
1665 spin_lock_irq(&tp->lock); |
|
1666 rtl8139_tx_clear (tp); |
|
1667 spin_unlock_irq(&tp->lock); |
|
1668 |
|
1669 /* ...and finally, reset everything */ |
|
1670 if (netif_running(dev)) { |
|
1671 rtl8139_hw_start (dev); |
|
1672 netif_wake_queue (dev); |
|
1673 } |
|
1674 spin_unlock_bh(&tp->rx_lock); |
|
1675 } |
|
1676 |
|
1677 static void rtl8139_tx_timeout (struct net_device *dev) |
|
1678 { |
|
1679 struct rtl8139_private *tp = netdev_priv(dev); |
|
1680 |
|
1681 tp->watchdog_fired = 1; |
|
1682 if (!tp->have_thread) { |
|
1683 INIT_DELAYED_WORK(&tp->thread, rtl8139_thread); |
|
1684 schedule_delayed_work(&tp->thread, next_tick); |
|
1685 } |
|
1686 } |
|
1687 |
|
1688 static netdev_tx_t rtl8139_start_xmit (struct sk_buff *skb, |
|
1689 struct net_device *dev) |
|
1690 { |
|
1691 struct rtl8139_private *tp = netdev_priv(dev); |
|
1692 void __iomem *ioaddr = tp->mmio_addr; |
|
1693 unsigned int entry; |
|
1694 unsigned int len = skb->len; |
|
1695 unsigned long flags; |
|
1696 |
|
1697 /* Calculate the next Tx descriptor entry. */ |
|
1698 entry = tp->cur_tx % NUM_TX_DESC; |
|
1699 |
|
1700 /* Note: the chip doesn't have auto-pad! */ |
|
1701 if (likely(len < TX_BUF_SIZE)) { |
|
1702 if (len < ETH_ZLEN) |
|
1703 memset(tp->tx_buf[entry], 0, ETH_ZLEN); |
|
1704 skb_copy_and_csum_dev(skb, tp->tx_buf[entry]); |
|
1705 dev_kfree_skb(skb); |
|
1706 } else { |
|
1707 dev_kfree_skb(skb); |
|
1708 dev->stats.tx_dropped++; |
|
1709 return NETDEV_TX_OK; |
|
1710 } |
|
1711 |
|
1712 spin_lock_irqsave(&tp->lock, flags); |
|
1713 /* |
|
1714 * Writing to TxStatus triggers a DMA transfer of the data |
|
1715 * copied to tp->tx_buf[entry] above. Use a memory barrier |
|
1716 * to make sure that the device sees the updated data. |
|
1717 */ |
|
1718 wmb(); |
|
1719 RTL_W32_F (TxStatus0 + (entry * sizeof (u32)), |
|
1720 tp->tx_flag | max(len, (unsigned int)ETH_ZLEN)); |
|
1721 |
|
1722 tp->cur_tx++; |
|
1723 |
|
1724 if ((tp->cur_tx - NUM_TX_DESC) == tp->dirty_tx) |
|
1725 netif_stop_queue (dev); |
|
1726 spin_unlock_irqrestore(&tp->lock, flags); |
|
1727 |
|
1728 netif_dbg(tp, tx_queued, dev, "Queued Tx packet size %u to slot %d\n", |
|
1729 len, entry); |
|
1730 |
|
1731 return NETDEV_TX_OK; |
|
1732 } |
|
1733 |
|
1734 |
|
1735 static void rtl8139_tx_interrupt (struct net_device *dev, |
|
1736 struct rtl8139_private *tp, |
|
1737 void __iomem *ioaddr) |
|
1738 { |
|
1739 unsigned long dirty_tx, tx_left; |
|
1740 |
|
1741 assert (dev != NULL); |
|
1742 assert (ioaddr != NULL); |
|
1743 |
|
1744 dirty_tx = tp->dirty_tx; |
|
1745 tx_left = tp->cur_tx - dirty_tx; |
|
1746 while (tx_left > 0) { |
|
1747 int entry = dirty_tx % NUM_TX_DESC; |
|
1748 int txstatus; |
|
1749 |
|
1750 txstatus = RTL_R32 (TxStatus0 + (entry * sizeof (u32))); |
|
1751 |
|
1752 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted))) |
|
1753 break; /* It still hasn't been Txed */ |
|
1754 |
|
1755 /* Note: TxCarrierLost is always asserted at 100mbps. */ |
|
1756 if (txstatus & (TxOutOfWindow | TxAborted)) { |
|
1757 /* There was an major error, log it. */ |
|
1758 netif_dbg(tp, tx_err, dev, "Transmit error, Tx status %08x\n", |
|
1759 txstatus); |
|
1760 dev->stats.tx_errors++; |
|
1761 if (txstatus & TxAborted) { |
|
1762 dev->stats.tx_aborted_errors++; |
|
1763 RTL_W32 (TxConfig, TxClearAbt); |
|
1764 RTL_W16 (IntrStatus, TxErr); |
|
1765 wmb(); |
|
1766 } |
|
1767 if (txstatus & TxCarrierLost) |
|
1768 dev->stats.tx_carrier_errors++; |
|
1769 if (txstatus & TxOutOfWindow) |
|
1770 dev->stats.tx_window_errors++; |
|
1771 } else { |
|
1772 if (txstatus & TxUnderrun) { |
|
1773 /* Add 64 to the Tx FIFO threshold. */ |
|
1774 if (tp->tx_flag < 0x00300000) |
|
1775 tp->tx_flag += 0x00020000; |
|
1776 dev->stats.tx_fifo_errors++; |
|
1777 } |
|
1778 dev->stats.collisions += (txstatus >> 24) & 15; |
|
1779 dev->stats.tx_bytes += txstatus & 0x7ff; |
|
1780 dev->stats.tx_packets++; |
|
1781 } |
|
1782 |
|
1783 dirty_tx++; |
|
1784 tx_left--; |
|
1785 } |
|
1786 |
|
1787 #ifndef RTL8139_NDEBUG |
|
1788 if (tp->cur_tx - dirty_tx > NUM_TX_DESC) { |
|
1789 netdev_err(dev, "Out-of-sync dirty pointer, %ld vs. %ld\n", |
|
1790 dirty_tx, tp->cur_tx); |
|
1791 dirty_tx += NUM_TX_DESC; |
|
1792 } |
|
1793 #endif /* RTL8139_NDEBUG */ |
|
1794 |
|
1795 /* only wake the queue if we did work, and the queue is stopped */ |
|
1796 if (tp->dirty_tx != dirty_tx) { |
|
1797 tp->dirty_tx = dirty_tx; |
|
1798 mb(); |
|
1799 netif_wake_queue (dev); |
|
1800 } |
|
1801 } |
|
1802 |
|
1803 |
|
1804 /* TODO: clean this up! Rx reset need not be this intensive */ |
|
1805 static void rtl8139_rx_err (u32 rx_status, struct net_device *dev, |
|
1806 struct rtl8139_private *tp, void __iomem *ioaddr) |
|
1807 { |
|
1808 u8 tmp8; |
|
1809 #ifdef CONFIG_8139_OLD_RX_RESET |
|
1810 int tmp_work; |
|
1811 #endif |
|
1812 |
|
1813 netif_dbg(tp, rx_err, dev, "Ethernet frame had errors, status %08x\n", |
|
1814 rx_status); |
|
1815 dev->stats.rx_errors++; |
|
1816 if (!(rx_status & RxStatusOK)) { |
|
1817 if (rx_status & RxTooLong) { |
|
1818 netdev_dbg(dev, "Oversized Ethernet frame, status %04x!\n", |
|
1819 rx_status); |
|
1820 /* A.C.: The chip hangs here. */ |
|
1821 } |
|
1822 if (rx_status & (RxBadSymbol | RxBadAlign)) |
|
1823 dev->stats.rx_frame_errors++; |
|
1824 if (rx_status & (RxRunt | RxTooLong)) |
|
1825 dev->stats.rx_length_errors++; |
|
1826 if (rx_status & RxCRCErr) |
|
1827 dev->stats.rx_crc_errors++; |
|
1828 } else { |
|
1829 tp->xstats.rx_lost_in_ring++; |
|
1830 } |
|
1831 |
|
1832 #ifndef CONFIG_8139_OLD_RX_RESET |
|
1833 tmp8 = RTL_R8 (ChipCmd); |
|
1834 RTL_W8 (ChipCmd, tmp8 & ~CmdRxEnb); |
|
1835 RTL_W8 (ChipCmd, tmp8); |
|
1836 RTL_W32 (RxConfig, tp->rx_config); |
|
1837 tp->cur_rx = 0; |
|
1838 #else |
|
1839 /* Reset the receiver, based on RealTek recommendation. (Bug?) */ |
|
1840 |
|
1841 /* disable receive */ |
|
1842 RTL_W8_F (ChipCmd, CmdTxEnb); |
|
1843 tmp_work = 200; |
|
1844 while (--tmp_work > 0) { |
|
1845 udelay(1); |
|
1846 tmp8 = RTL_R8 (ChipCmd); |
|
1847 if (!(tmp8 & CmdRxEnb)) |
|
1848 break; |
|
1849 } |
|
1850 if (tmp_work <= 0) |
|
1851 netdev_warn(dev, "rx stop wait too long\n"); |
|
1852 /* restart receive */ |
|
1853 tmp_work = 200; |
|
1854 while (--tmp_work > 0) { |
|
1855 RTL_W8_F (ChipCmd, CmdRxEnb | CmdTxEnb); |
|
1856 udelay(1); |
|
1857 tmp8 = RTL_R8 (ChipCmd); |
|
1858 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb)) |
|
1859 break; |
|
1860 } |
|
1861 if (tmp_work <= 0) |
|
1862 netdev_warn(dev, "tx/rx enable wait too long\n"); |
|
1863 |
|
1864 /* and reinitialize all rx related registers */ |
|
1865 RTL_W8_F (Cfg9346, Cfg9346_Unlock); |
|
1866 /* Must enable Tx/Rx before setting transfer thresholds! */ |
|
1867 RTL_W8 (ChipCmd, CmdRxEnb | CmdTxEnb); |
|
1868 |
|
1869 tp->rx_config = rtl8139_rx_config | AcceptBroadcast | AcceptMyPhys; |
|
1870 RTL_W32 (RxConfig, tp->rx_config); |
|
1871 tp->cur_rx = 0; |
|
1872 |
|
1873 netdev_dbg(dev, "init buffer addresses\n"); |
|
1874 |
|
1875 /* Lock Config[01234] and BMCR register writes */ |
|
1876 RTL_W8 (Cfg9346, Cfg9346_Lock); |
|
1877 |
|
1878 /* init Rx ring buffer DMA address */ |
|
1879 RTL_W32_F (RxBuf, tp->rx_ring_dma); |
|
1880 |
|
1881 /* A.C.: Reset the multicast list. */ |
|
1882 __set_rx_mode (dev); |
|
1883 #endif |
|
1884 } |
|
1885 |
|
1886 #if RX_BUF_IDX == 3 |
|
1887 static inline void wrap_copy(struct sk_buff *skb, const unsigned char *ring, |
|
1888 u32 offset, unsigned int size) |
|
1889 { |
|
1890 u32 left = RX_BUF_LEN - offset; |
|
1891 |
|
1892 if (size > left) { |
|
1893 skb_copy_to_linear_data(skb, ring + offset, left); |
|
1894 skb_copy_to_linear_data_offset(skb, left, ring, size - left); |
|
1895 } else |
|
1896 skb_copy_to_linear_data(skb, ring + offset, size); |
|
1897 } |
|
1898 #endif |
|
1899 |
|
1900 static void rtl8139_isr_ack(struct rtl8139_private *tp) |
|
1901 { |
|
1902 void __iomem *ioaddr = tp->mmio_addr; |
|
1903 u16 status; |
|
1904 |
|
1905 status = RTL_R16 (IntrStatus) & RxAckBits; |
|
1906 |
|
1907 /* Clear out errors and receive interrupts */ |
|
1908 if (likely(status != 0)) { |
|
1909 if (unlikely(status & (RxFIFOOver | RxOverflow))) { |
|
1910 tp->dev->stats.rx_errors++; |
|
1911 if (status & RxFIFOOver) |
|
1912 tp->dev->stats.rx_fifo_errors++; |
|
1913 } |
|
1914 RTL_W16_F (IntrStatus, RxAckBits); |
|
1915 } |
|
1916 } |
|
1917 |
|
1918 static int rtl8139_rx(struct net_device *dev, struct rtl8139_private *tp, |
|
1919 int budget) |
|
1920 { |
|
1921 void __iomem *ioaddr = tp->mmio_addr; |
|
1922 int received = 0; |
|
1923 unsigned char *rx_ring = tp->rx_ring; |
|
1924 unsigned int cur_rx = tp->cur_rx; |
|
1925 unsigned int rx_size = 0; |
|
1926 |
|
1927 netdev_dbg(dev, "In %s(), current %04x BufAddr %04x, free to %04x, Cmd %02x\n", |
|
1928 __func__, (u16)cur_rx, |
|
1929 RTL_R16(RxBufAddr), RTL_R16(RxBufPtr), RTL_R8(ChipCmd)); |
|
1930 |
|
1931 while (netif_running(dev) && received < budget && |
|
1932 (RTL_R8 (ChipCmd) & RxBufEmpty) == 0) { |
|
1933 u32 ring_offset = cur_rx % RX_BUF_LEN; |
|
1934 u32 rx_status; |
|
1935 unsigned int pkt_size; |
|
1936 struct sk_buff *skb; |
|
1937 |
|
1938 rmb(); |
|
1939 |
|
1940 /* read size+status of next frame from DMA ring buffer */ |
|
1941 rx_status = le32_to_cpu (*(__le32 *) (rx_ring + ring_offset)); |
|
1942 rx_size = rx_status >> 16; |
|
1943 pkt_size = rx_size - 4; |
|
1944 |
|
1945 netif_dbg(tp, rx_status, dev, "%s() status %04x, size %04x, cur %04x\n", |
|
1946 __func__, rx_status, rx_size, cur_rx); |
|
1947 #if RTL8139_DEBUG > 2 |
|
1948 print_hex_dump(KERN_DEBUG, "Frame contents: ", |
|
1949 DUMP_PREFIX_OFFSET, 16, 1, |
|
1950 &rx_ring[ring_offset], 70, true); |
|
1951 #endif |
|
1952 |
|
1953 /* Packet copy from FIFO still in progress. |
|
1954 * Theoretically, this should never happen |
|
1955 * since EarlyRx is disabled. |
|
1956 */ |
|
1957 if (unlikely(rx_size == 0xfff0)) { |
|
1958 if (!tp->fifo_copy_timeout) |
|
1959 tp->fifo_copy_timeout = jiffies + 2; |
|
1960 else if (time_after(jiffies, tp->fifo_copy_timeout)) { |
|
1961 netdev_dbg(dev, "hung FIFO. Reset\n"); |
|
1962 rx_size = 0; |
|
1963 goto no_early_rx; |
|
1964 } |
|
1965 netif_dbg(tp, intr, dev, "fifo copy in progress\n"); |
|
1966 tp->xstats.early_rx++; |
|
1967 break; |
|
1968 } |
|
1969 |
|
1970 no_early_rx: |
|
1971 tp->fifo_copy_timeout = 0; |
|
1972 |
|
1973 /* If Rx err or invalid rx_size/rx_status received |
|
1974 * (which happens if we get lost in the ring), |
|
1975 * Rx process gets reset, so we abort any further |
|
1976 * Rx processing. |
|
1977 */ |
|
1978 if (unlikely((rx_size > (MAX_ETH_FRAME_SIZE+4)) || |
|
1979 (rx_size < 8) || |
|
1980 (!(rx_status & RxStatusOK)))) { |
|
1981 rtl8139_rx_err (rx_status, dev, tp, ioaddr); |
|
1982 received = -1; |
|
1983 goto out; |
|
1984 } |
|
1985 |
|
1986 /* Malloc up new buffer, compatible with net-2e. */ |
|
1987 /* Omit the four octet CRC from the length. */ |
|
1988 |
|
1989 skb = netdev_alloc_skb_ip_align(dev, pkt_size); |
|
1990 if (likely(skb)) { |
|
1991 #if RX_BUF_IDX == 3 |
|
1992 wrap_copy(skb, rx_ring, ring_offset+4, pkt_size); |
|
1993 #else |
|
1994 skb_copy_to_linear_data (skb, &rx_ring[ring_offset + 4], pkt_size); |
|
1995 #endif |
|
1996 skb_put (skb, pkt_size); |
|
1997 |
|
1998 skb->protocol = eth_type_trans (skb, dev); |
|
1999 |
|
2000 dev->stats.rx_bytes += pkt_size; |
|
2001 dev->stats.rx_packets++; |
|
2002 |
|
2003 netif_receive_skb (skb); |
|
2004 } else { |
|
2005 if (net_ratelimit()) |
|
2006 netdev_warn(dev, "Memory squeeze, dropping packet\n"); |
|
2007 dev->stats.rx_dropped++; |
|
2008 } |
|
2009 received++; |
|
2010 |
|
2011 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3; |
|
2012 RTL_W16 (RxBufPtr, (u16) (cur_rx - 16)); |
|
2013 |
|
2014 rtl8139_isr_ack(tp); |
|
2015 } |
|
2016 |
|
2017 if (unlikely(!received || rx_size == 0xfff0)) |
|
2018 rtl8139_isr_ack(tp); |
|
2019 |
|
2020 netdev_dbg(dev, "Done %s(), current %04x BufAddr %04x, free to %04x, Cmd %02x\n", |
|
2021 __func__, cur_rx, |
|
2022 RTL_R16(RxBufAddr), RTL_R16(RxBufPtr), RTL_R8(ChipCmd)); |
|
2023 |
|
2024 tp->cur_rx = cur_rx; |
|
2025 |
|
2026 /* |
|
2027 * The receive buffer should be mostly empty. |
|
2028 * Tell NAPI to reenable the Rx irq. |
|
2029 */ |
|
2030 if (tp->fifo_copy_timeout) |
|
2031 received = budget; |
|
2032 |
|
2033 out: |
|
2034 return received; |
|
2035 } |
|
2036 |
|
2037 |
|
2038 static void rtl8139_weird_interrupt (struct net_device *dev, |
|
2039 struct rtl8139_private *tp, |
|
2040 void __iomem *ioaddr, |
|
2041 int status, int link_changed) |
|
2042 { |
|
2043 netdev_dbg(dev, "Abnormal interrupt, status %08x\n", status); |
|
2044 |
|
2045 assert (dev != NULL); |
|
2046 assert (tp != NULL); |
|
2047 assert (ioaddr != NULL); |
|
2048 |
|
2049 /* Update the error count. */ |
|
2050 dev->stats.rx_missed_errors += RTL_R32 (RxMissed); |
|
2051 RTL_W32 (RxMissed, 0); |
|
2052 |
|
2053 if ((status & RxUnderrun) && link_changed && |
|
2054 (tp->drv_flags & HAS_LNK_CHNG)) { |
|
2055 rtl_check_media(dev, 0); |
|
2056 status &= ~RxUnderrun; |
|
2057 } |
|
2058 |
|
2059 if (status & (RxUnderrun | RxErr)) |
|
2060 dev->stats.rx_errors++; |
|
2061 |
|
2062 if (status & PCSTimeout) |
|
2063 dev->stats.rx_length_errors++; |
|
2064 if (status & RxUnderrun) |
|
2065 dev->stats.rx_fifo_errors++; |
|
2066 if (status & PCIErr) { |
|
2067 u16 pci_cmd_status; |
|
2068 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status); |
|
2069 pci_write_config_word (tp->pci_dev, PCI_STATUS, pci_cmd_status); |
|
2070 |
|
2071 netdev_err(dev, "PCI Bus error %04x\n", pci_cmd_status); |
|
2072 } |
|
2073 } |
|
2074 |
|
2075 static int rtl8139_poll(struct napi_struct *napi, int budget) |
|
2076 { |
|
2077 struct rtl8139_private *tp = container_of(napi, struct rtl8139_private, napi); |
|
2078 struct net_device *dev = tp->dev; |
|
2079 void __iomem *ioaddr = tp->mmio_addr; |
|
2080 int work_done; |
|
2081 |
|
2082 spin_lock(&tp->rx_lock); |
|
2083 work_done = 0; |
|
2084 if (likely(RTL_R16(IntrStatus) & RxAckBits)) |
|
2085 work_done += rtl8139_rx(dev, tp, budget); |
|
2086 |
|
2087 if (work_done < budget) { |
|
2088 unsigned long flags; |
|
2089 /* |
|
2090 * Order is important since data can get interrupted |
|
2091 * again when we think we are done. |
|
2092 */ |
|
2093 spin_lock_irqsave(&tp->lock, flags); |
|
2094 __napi_complete(napi); |
|
2095 RTL_W16_F(IntrMask, rtl8139_intr_mask); |
|
2096 spin_unlock_irqrestore(&tp->lock, flags); |
|
2097 } |
|
2098 spin_unlock(&tp->rx_lock); |
|
2099 |
|
2100 return work_done; |
|
2101 } |
|
2102 |
|
2103 /* The interrupt handler does all of the Rx thread work and cleans up |
|
2104 after the Tx thread. */ |
|
2105 static irqreturn_t rtl8139_interrupt (int irq, void *dev_instance) |
|
2106 { |
|
2107 struct net_device *dev = (struct net_device *) dev_instance; |
|
2108 struct rtl8139_private *tp = netdev_priv(dev); |
|
2109 void __iomem *ioaddr = tp->mmio_addr; |
|
2110 u16 status, ackstat; |
|
2111 int link_changed = 0; /* avoid bogus "uninit" warning */ |
|
2112 int handled = 0; |
|
2113 |
|
2114 spin_lock (&tp->lock); |
|
2115 status = RTL_R16 (IntrStatus); |
|
2116 |
|
2117 /* shared irq? */ |
|
2118 if (unlikely((status & rtl8139_intr_mask) == 0)) |
|
2119 goto out; |
|
2120 |
|
2121 handled = 1; |
|
2122 |
|
2123 /* h/w no longer present (hotplug?) or major error, bail */ |
|
2124 if (unlikely(status == 0xFFFF)) |
|
2125 goto out; |
|
2126 |
|
2127 /* close possible race's with dev_close */ |
|
2128 if (unlikely(!netif_running(dev))) { |
|
2129 RTL_W16 (IntrMask, 0); |
|
2130 goto out; |
|
2131 } |
|
2132 |
|
2133 /* Acknowledge all of the current interrupt sources ASAP, but |
|
2134 an first get an additional status bit from CSCR. */ |
|
2135 if (unlikely(status & RxUnderrun)) |
|
2136 link_changed = RTL_R16 (CSCR) & CSCR_LinkChangeBit; |
|
2137 |
|
2138 ackstat = status & ~(RxAckBits | TxErr); |
|
2139 if (ackstat) |
|
2140 RTL_W16 (IntrStatus, ackstat); |
|
2141 |
|
2142 /* Receive packets are processed by poll routine. |
|
2143 If not running start it now. */ |
|
2144 if (status & RxAckBits){ |
|
2145 if (napi_schedule_prep(&tp->napi)) { |
|
2146 RTL_W16_F (IntrMask, rtl8139_norx_intr_mask); |
|
2147 __napi_schedule(&tp->napi); |
|
2148 } |
|
2149 } |
|
2150 |
|
2151 /* Check uncommon events with one test. */ |
|
2152 if (unlikely(status & (PCIErr | PCSTimeout | RxUnderrun | RxErr))) |
|
2153 rtl8139_weird_interrupt (dev, tp, ioaddr, |
|
2154 status, link_changed); |
|
2155 |
|
2156 if (status & (TxOK | TxErr)) { |
|
2157 rtl8139_tx_interrupt (dev, tp, ioaddr); |
|
2158 if (status & TxErr) |
|
2159 RTL_W16 (IntrStatus, TxErr); |
|
2160 } |
|
2161 out: |
|
2162 spin_unlock (&tp->lock); |
|
2163 |
|
2164 netdev_dbg(dev, "exiting interrupt, intr_status=%#4.4x\n", |
|
2165 RTL_R16(IntrStatus)); |
|
2166 return IRQ_RETVAL(handled); |
|
2167 } |
|
2168 |
|
2169 #ifdef CONFIG_NET_POLL_CONTROLLER |
|
2170 /* |
|
2171 * Polling receive - used by netconsole and other diagnostic tools |
|
2172 * to allow network i/o with interrupts disabled. |
|
2173 */ |
|
2174 static void rtl8139_poll_controller(struct net_device *dev) |
|
2175 { |
|
2176 disable_irq(dev->irq); |
|
2177 rtl8139_interrupt(dev->irq, dev); |
|
2178 enable_irq(dev->irq); |
|
2179 } |
|
2180 #endif |
|
2181 |
|
2182 static int rtl8139_set_mac_address(struct net_device *dev, void *p) |
|
2183 { |
|
2184 struct rtl8139_private *tp = netdev_priv(dev); |
|
2185 void __iomem *ioaddr = tp->mmio_addr; |
|
2186 struct sockaddr *addr = p; |
|
2187 |
|
2188 if (!is_valid_ether_addr(addr->sa_data)) |
|
2189 return -EADDRNOTAVAIL; |
|
2190 |
|
2191 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
|
2192 |
|
2193 spin_lock_irq(&tp->lock); |
|
2194 |
|
2195 RTL_W8_F(Cfg9346, Cfg9346_Unlock); |
|
2196 RTL_W32_F(MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0))); |
|
2197 RTL_W32_F(MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4))); |
|
2198 RTL_W8_F(Cfg9346, Cfg9346_Lock); |
|
2199 |
|
2200 spin_unlock_irq(&tp->lock); |
|
2201 |
|
2202 return 0; |
|
2203 } |
|
2204 |
|
2205 static int rtl8139_close (struct net_device *dev) |
|
2206 { |
|
2207 struct rtl8139_private *tp = netdev_priv(dev); |
|
2208 void __iomem *ioaddr = tp->mmio_addr; |
|
2209 unsigned long flags; |
|
2210 |
|
2211 netif_stop_queue(dev); |
|
2212 napi_disable(&tp->napi); |
|
2213 |
|
2214 netif_dbg(tp, ifdown, dev, "Shutting down ethercard, status was 0x%04x\n", |
|
2215 RTL_R16(IntrStatus)); |
|
2216 |
|
2217 spin_lock_irqsave (&tp->lock, flags); |
|
2218 |
|
2219 /* Stop the chip's Tx and Rx DMA processes. */ |
|
2220 RTL_W8 (ChipCmd, 0); |
|
2221 |
|
2222 /* Disable interrupts by clearing the interrupt mask. */ |
|
2223 RTL_W16 (IntrMask, 0); |
|
2224 |
|
2225 /* Update the error counts. */ |
|
2226 dev->stats.rx_missed_errors += RTL_R32 (RxMissed); |
|
2227 RTL_W32 (RxMissed, 0); |
|
2228 |
|
2229 spin_unlock_irqrestore (&tp->lock, flags); |
|
2230 |
|
2231 free_irq (dev->irq, dev); |
|
2232 |
|
2233 rtl8139_tx_clear (tp); |
|
2234 |
|
2235 dma_free_coherent(&tp->pci_dev->dev, RX_BUF_TOT_LEN, |
|
2236 tp->rx_ring, tp->rx_ring_dma); |
|
2237 dma_free_coherent(&tp->pci_dev->dev, TX_BUF_TOT_LEN, |
|
2238 tp->tx_bufs, tp->tx_bufs_dma); |
|
2239 tp->rx_ring = NULL; |
|
2240 tp->tx_bufs = NULL; |
|
2241 |
|
2242 /* Green! Put the chip in low-power mode. */ |
|
2243 RTL_W8 (Cfg9346, Cfg9346_Unlock); |
|
2244 |
|
2245 if (rtl_chip_info[tp->chipset].flags & HasHltClk) |
|
2246 RTL_W8 (HltClk, 'H'); /* 'R' would leave the clock running. */ |
|
2247 |
|
2248 return 0; |
|
2249 } |
|
2250 |
|
2251 |
|
2252 /* Get the ethtool Wake-on-LAN settings. Assumes that wol points to |
|
2253 kernel memory, *wol has been initialized as {ETHTOOL_GWOL}, and |
|
2254 other threads or interrupts aren't messing with the 8139. */ |
|
2255 static void rtl8139_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
|
2256 { |
|
2257 struct rtl8139_private *tp = netdev_priv(dev); |
|
2258 void __iomem *ioaddr = tp->mmio_addr; |
|
2259 |
|
2260 spin_lock_irq(&tp->lock); |
|
2261 if (rtl_chip_info[tp->chipset].flags & HasLWake) { |
|
2262 u8 cfg3 = RTL_R8 (Config3); |
|
2263 u8 cfg5 = RTL_R8 (Config5); |
|
2264 |
|
2265 wol->supported = WAKE_PHY | WAKE_MAGIC |
|
2266 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST; |
|
2267 |
|
2268 wol->wolopts = 0; |
|
2269 if (cfg3 & Cfg3_LinkUp) |
|
2270 wol->wolopts |= WAKE_PHY; |
|
2271 if (cfg3 & Cfg3_Magic) |
|
2272 wol->wolopts |= WAKE_MAGIC; |
|
2273 /* (KON)FIXME: See how netdev_set_wol() handles the |
|
2274 following constants. */ |
|
2275 if (cfg5 & Cfg5_UWF) |
|
2276 wol->wolopts |= WAKE_UCAST; |
|
2277 if (cfg5 & Cfg5_MWF) |
|
2278 wol->wolopts |= WAKE_MCAST; |
|
2279 if (cfg5 & Cfg5_BWF) |
|
2280 wol->wolopts |= WAKE_BCAST; |
|
2281 } |
|
2282 spin_unlock_irq(&tp->lock); |
|
2283 } |
|
2284 |
|
2285 |
|
2286 /* Set the ethtool Wake-on-LAN settings. Return 0 or -errno. Assumes |
|
2287 that wol points to kernel memory and other threads or interrupts |
|
2288 aren't messing with the 8139. */ |
|
2289 static int rtl8139_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
|
2290 { |
|
2291 struct rtl8139_private *tp = netdev_priv(dev); |
|
2292 void __iomem *ioaddr = tp->mmio_addr; |
|
2293 u32 support; |
|
2294 u8 cfg3, cfg5; |
|
2295 |
|
2296 support = ((rtl_chip_info[tp->chipset].flags & HasLWake) |
|
2297 ? (WAKE_PHY | WAKE_MAGIC |
|
2298 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST) |
|
2299 : 0); |
|
2300 if (wol->wolopts & ~support) |
|
2301 return -EINVAL; |
|
2302 |
|
2303 spin_lock_irq(&tp->lock); |
|
2304 cfg3 = RTL_R8 (Config3) & ~(Cfg3_LinkUp | Cfg3_Magic); |
|
2305 if (wol->wolopts & WAKE_PHY) |
|
2306 cfg3 |= Cfg3_LinkUp; |
|
2307 if (wol->wolopts & WAKE_MAGIC) |
|
2308 cfg3 |= Cfg3_Magic; |
|
2309 RTL_W8 (Cfg9346, Cfg9346_Unlock); |
|
2310 RTL_W8 (Config3, cfg3); |
|
2311 RTL_W8 (Cfg9346, Cfg9346_Lock); |
|
2312 |
|
2313 cfg5 = RTL_R8 (Config5) & ~(Cfg5_UWF | Cfg5_MWF | Cfg5_BWF); |
|
2314 /* (KON)FIXME: These are untested. We may have to set the |
|
2315 CRC0, Wakeup0 and LSBCRC0 registers too, but I have no |
|
2316 documentation. */ |
|
2317 if (wol->wolopts & WAKE_UCAST) |
|
2318 cfg5 |= Cfg5_UWF; |
|
2319 if (wol->wolopts & WAKE_MCAST) |
|
2320 cfg5 |= Cfg5_MWF; |
|
2321 if (wol->wolopts & WAKE_BCAST) |
|
2322 cfg5 |= Cfg5_BWF; |
|
2323 RTL_W8 (Config5, cfg5); /* need not unlock via Cfg9346 */ |
|
2324 spin_unlock_irq(&tp->lock); |
|
2325 |
|
2326 return 0; |
|
2327 } |
|
2328 |
|
2329 static void rtl8139_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) |
|
2330 { |
|
2331 struct rtl8139_private *tp = netdev_priv(dev); |
|
2332 strcpy(info->driver, DRV_NAME); |
|
2333 strcpy(info->version, DRV_VERSION); |
|
2334 strcpy(info->bus_info, pci_name(tp->pci_dev)); |
|
2335 info->regdump_len = tp->regs_len; |
|
2336 } |
|
2337 |
|
2338 static int rtl8139_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
|
2339 { |
|
2340 struct rtl8139_private *tp = netdev_priv(dev); |
|
2341 spin_lock_irq(&tp->lock); |
|
2342 mii_ethtool_gset(&tp->mii, cmd); |
|
2343 spin_unlock_irq(&tp->lock); |
|
2344 return 0; |
|
2345 } |
|
2346 |
|
2347 static int rtl8139_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
|
2348 { |
|
2349 struct rtl8139_private *tp = netdev_priv(dev); |
|
2350 int rc; |
|
2351 spin_lock_irq(&tp->lock); |
|
2352 rc = mii_ethtool_sset(&tp->mii, cmd); |
|
2353 spin_unlock_irq(&tp->lock); |
|
2354 return rc; |
|
2355 } |
|
2356 |
|
2357 static int rtl8139_nway_reset(struct net_device *dev) |
|
2358 { |
|
2359 struct rtl8139_private *tp = netdev_priv(dev); |
|
2360 return mii_nway_restart(&tp->mii); |
|
2361 } |
|
2362 |
|
2363 static u32 rtl8139_get_link(struct net_device *dev) |
|
2364 { |
|
2365 struct rtl8139_private *tp = netdev_priv(dev); |
|
2366 return mii_link_ok(&tp->mii); |
|
2367 } |
|
2368 |
|
2369 static u32 rtl8139_get_msglevel(struct net_device *dev) |
|
2370 { |
|
2371 struct rtl8139_private *tp = netdev_priv(dev); |
|
2372 return tp->msg_enable; |
|
2373 } |
|
2374 |
|
2375 static void rtl8139_set_msglevel(struct net_device *dev, u32 datum) |
|
2376 { |
|
2377 struct rtl8139_private *tp = netdev_priv(dev); |
|
2378 tp->msg_enable = datum; |
|
2379 } |
|
2380 |
|
2381 static int rtl8139_get_regs_len(struct net_device *dev) |
|
2382 { |
|
2383 struct rtl8139_private *tp; |
|
2384 /* TODO: we are too slack to do reg dumping for pio, for now */ |
|
2385 if (use_io) |
|
2386 return 0; |
|
2387 tp = netdev_priv(dev); |
|
2388 return tp->regs_len; |
|
2389 } |
|
2390 |
|
2391 static void rtl8139_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf) |
|
2392 { |
|
2393 struct rtl8139_private *tp; |
|
2394 |
|
2395 /* TODO: we are too slack to do reg dumping for pio, for now */ |
|
2396 if (use_io) |
|
2397 return; |
|
2398 tp = netdev_priv(dev); |
|
2399 |
|
2400 regs->version = RTL_REGS_VER; |
|
2401 |
|
2402 spin_lock_irq(&tp->lock); |
|
2403 memcpy_fromio(regbuf, tp->mmio_addr, regs->len); |
|
2404 spin_unlock_irq(&tp->lock); |
|
2405 } |
|
2406 |
|
2407 static int rtl8139_get_sset_count(struct net_device *dev, int sset) |
|
2408 { |
|
2409 switch (sset) { |
|
2410 case ETH_SS_STATS: |
|
2411 return RTL_NUM_STATS; |
|
2412 default: |
|
2413 return -EOPNOTSUPP; |
|
2414 } |
|
2415 } |
|
2416 |
|
2417 static void rtl8139_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data) |
|
2418 { |
|
2419 struct rtl8139_private *tp = netdev_priv(dev); |
|
2420 |
|
2421 data[0] = tp->xstats.early_rx; |
|
2422 data[1] = tp->xstats.tx_buf_mapped; |
|
2423 data[2] = tp->xstats.tx_timeouts; |
|
2424 data[3] = tp->xstats.rx_lost_in_ring; |
|
2425 } |
|
2426 |
|
2427 static void rtl8139_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
|
2428 { |
|
2429 memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys)); |
|
2430 } |
|
2431 |
|
2432 static const struct ethtool_ops rtl8139_ethtool_ops = { |
|
2433 .get_drvinfo = rtl8139_get_drvinfo, |
|
2434 .get_settings = rtl8139_get_settings, |
|
2435 .set_settings = rtl8139_set_settings, |
|
2436 .get_regs_len = rtl8139_get_regs_len, |
|
2437 .get_regs = rtl8139_get_regs, |
|
2438 .nway_reset = rtl8139_nway_reset, |
|
2439 .get_link = rtl8139_get_link, |
|
2440 .get_msglevel = rtl8139_get_msglevel, |
|
2441 .set_msglevel = rtl8139_set_msglevel, |
|
2442 .get_wol = rtl8139_get_wol, |
|
2443 .set_wol = rtl8139_set_wol, |
|
2444 .get_strings = rtl8139_get_strings, |
|
2445 .get_sset_count = rtl8139_get_sset_count, |
|
2446 .get_ethtool_stats = rtl8139_get_ethtool_stats, |
|
2447 }; |
|
2448 |
|
2449 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
|
2450 { |
|
2451 struct rtl8139_private *tp = netdev_priv(dev); |
|
2452 int rc; |
|
2453 |
|
2454 if (!netif_running(dev)) |
|
2455 return -EINVAL; |
|
2456 |
|
2457 spin_lock_irq(&tp->lock); |
|
2458 rc = generic_mii_ioctl(&tp->mii, if_mii(rq), cmd, NULL); |
|
2459 spin_unlock_irq(&tp->lock); |
|
2460 |
|
2461 return rc; |
|
2462 } |
|
2463 |
|
2464 |
|
2465 static struct net_device_stats *rtl8139_get_stats (struct net_device *dev) |
|
2466 { |
|
2467 struct rtl8139_private *tp = netdev_priv(dev); |
|
2468 void __iomem *ioaddr = tp->mmio_addr; |
|
2469 unsigned long flags; |
|
2470 |
|
2471 if (netif_running(dev)) { |
|
2472 spin_lock_irqsave (&tp->lock, flags); |
|
2473 dev->stats.rx_missed_errors += RTL_R32 (RxMissed); |
|
2474 RTL_W32 (RxMissed, 0); |
|
2475 spin_unlock_irqrestore (&tp->lock, flags); |
|
2476 } |
|
2477 |
|
2478 return &dev->stats; |
|
2479 } |
|
2480 |
|
2481 /* Set or clear the multicast filter for this adaptor. |
|
2482 This routine is not state sensitive and need not be SMP locked. */ |
|
2483 |
|
2484 static void __set_rx_mode (struct net_device *dev) |
|
2485 { |
|
2486 struct rtl8139_private *tp = netdev_priv(dev); |
|
2487 void __iomem *ioaddr = tp->mmio_addr; |
|
2488 u32 mc_filter[2]; /* Multicast hash filter */ |
|
2489 int rx_mode; |
|
2490 u32 tmp; |
|
2491 |
|
2492 netdev_dbg(dev, "rtl8139_set_rx_mode(%04x) done -- Rx config %08x\n", |
|
2493 dev->flags, RTL_R32(RxConfig)); |
|
2494 |
|
2495 /* Note: do not reorder, GCC is clever about common statements. */ |
|
2496 if (dev->flags & IFF_PROMISC) { |
|
2497 rx_mode = |
|
2498 AcceptBroadcast | AcceptMulticast | AcceptMyPhys | |
|
2499 AcceptAllPhys; |
|
2500 mc_filter[1] = mc_filter[0] = 0xffffffff; |
|
2501 } else if ((netdev_mc_count(dev) > multicast_filter_limit) || |
|
2502 (dev->flags & IFF_ALLMULTI)) { |
|
2503 /* Too many to filter perfectly -- accept all multicasts. */ |
|
2504 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; |
|
2505 mc_filter[1] = mc_filter[0] = 0xffffffff; |
|
2506 } else { |
|
2507 struct netdev_hw_addr *ha; |
|
2508 rx_mode = AcceptBroadcast | AcceptMyPhys; |
|
2509 mc_filter[1] = mc_filter[0] = 0; |
|
2510 netdev_for_each_mc_addr(ha, dev) { |
|
2511 int bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26; |
|
2512 |
|
2513 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31); |
|
2514 rx_mode |= AcceptMulticast; |
|
2515 } |
|
2516 } |
|
2517 |
|
2518 /* We can safely update without stopping the chip. */ |
|
2519 tmp = rtl8139_rx_config | rx_mode; |
|
2520 if (tp->rx_config != tmp) { |
|
2521 RTL_W32_F (RxConfig, tmp); |
|
2522 tp->rx_config = tmp; |
|
2523 } |
|
2524 RTL_W32_F (MAR0 + 0, mc_filter[0]); |
|
2525 RTL_W32_F (MAR0 + 4, mc_filter[1]); |
|
2526 } |
|
2527 |
|
2528 static void rtl8139_set_rx_mode (struct net_device *dev) |
|
2529 { |
|
2530 unsigned long flags; |
|
2531 struct rtl8139_private *tp = netdev_priv(dev); |
|
2532 |
|
2533 spin_lock_irqsave (&tp->lock, flags); |
|
2534 __set_rx_mode(dev); |
|
2535 spin_unlock_irqrestore (&tp->lock, flags); |
|
2536 } |
|
2537 |
|
2538 #ifdef CONFIG_PM |
|
2539 |
|
2540 static int rtl8139_suspend (struct pci_dev *pdev, pm_message_t state) |
|
2541 { |
|
2542 struct net_device *dev = pci_get_drvdata (pdev); |
|
2543 struct rtl8139_private *tp = netdev_priv(dev); |
|
2544 void __iomem *ioaddr = tp->mmio_addr; |
|
2545 unsigned long flags; |
|
2546 |
|
2547 pci_save_state (pdev); |
|
2548 |
|
2549 if (!netif_running (dev)) |
|
2550 return 0; |
|
2551 |
|
2552 netif_device_detach (dev); |
|
2553 |
|
2554 spin_lock_irqsave (&tp->lock, flags); |
|
2555 |
|
2556 /* Disable interrupts, stop Tx and Rx. */ |
|
2557 RTL_W16 (IntrMask, 0); |
|
2558 RTL_W8 (ChipCmd, 0); |
|
2559 |
|
2560 /* Update the error counts. */ |
|
2561 dev->stats.rx_missed_errors += RTL_R32 (RxMissed); |
|
2562 RTL_W32 (RxMissed, 0); |
|
2563 |
|
2564 spin_unlock_irqrestore (&tp->lock, flags); |
|
2565 |
|
2566 pci_set_power_state (pdev, PCI_D3hot); |
|
2567 |
|
2568 return 0; |
|
2569 } |
|
2570 |
|
2571 |
|
2572 static int rtl8139_resume (struct pci_dev *pdev) |
|
2573 { |
|
2574 struct net_device *dev = pci_get_drvdata (pdev); |
|
2575 |
|
2576 pci_restore_state (pdev); |
|
2577 if (!netif_running (dev)) |
|
2578 return 0; |
|
2579 pci_set_power_state (pdev, PCI_D0); |
|
2580 rtl8139_init_ring (dev); |
|
2581 rtl8139_hw_start (dev); |
|
2582 netif_device_attach (dev); |
|
2583 return 0; |
|
2584 } |
|
2585 |
|
2586 #endif /* CONFIG_PM */ |
|
2587 |
|
2588 |
|
2589 static struct pci_driver rtl8139_pci_driver = { |
|
2590 .name = DRV_NAME, |
|
2591 .id_table = rtl8139_pci_tbl, |
|
2592 .probe = rtl8139_init_one, |
|
2593 .remove = __devexit_p(rtl8139_remove_one), |
|
2594 #ifdef CONFIG_PM |
|
2595 .suspend = rtl8139_suspend, |
|
2596 .resume = rtl8139_resume, |
|
2597 #endif /* CONFIG_PM */ |
|
2598 }; |
|
2599 |
|
2600 |
|
2601 static int __init rtl8139_init_module (void) |
|
2602 { |
|
2603 /* when we're a module, we always print a version message, |
|
2604 * even if no 8139 board is found. |
|
2605 */ |
|
2606 #ifdef MODULE |
|
2607 pr_info(RTL8139_DRIVER_NAME "\n"); |
|
2608 #endif |
|
2609 |
|
2610 return pci_register_driver(&rtl8139_pci_driver); |
|
2611 } |
|
2612 |
|
2613 |
|
2614 static void __exit rtl8139_cleanup_module (void) |
|
2615 { |
|
2616 pci_unregister_driver (&rtl8139_pci_driver); |
|
2617 } |
|
2618 |
|
2619 |
|
2620 module_init(rtl8139_init_module); |
|
2621 module_exit(rtl8139_cleanup_module); |