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dm snapshot: implement iterate devices
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / pci-skeleton.c
blob89f7b2ad523116c51ea7d612d43e32205c8515d6
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/module.h>
89 #include <linux/kernel.h>
90 #include <linux/pci.h>
91 #include <linux/init.h>
92 #include <linux/ioport.h>
93 #include <linux/netdevice.h>
94 #include <linux/etherdevice.h>
95 #include <linux/delay.h>
96 #include <linux/ethtool.h>
97 #include <linux/mii.h>
98 #include <linux/crc32.h>
99 #include <asm/io.h>
100
101 #define NETDRV_VERSION "1.0.1"
102 #define MODNAME "netdrv"
103 #define NETDRV_DRIVER_LOAD_MSG "MyVendor Fast Ethernet driver " NETDRV_VERSION " loaded"
104 #define PFX MODNAME ": "
105
106 static char version[] __devinitdata =
107 KERN_INFO NETDRV_DRIVER_LOAD_MSG "\n"
108 " Support available from http://foo.com/bar/baz.html\n";
109
110 /* define to 1 to enable PIO instead of MMIO */
111 #undef USE_IO_OPS
112
113 /* define to 1 to enable copious debugging info */
114 #undef NETDRV_DEBUG
115
116 /* define to 1 to disable lightweight runtime debugging checks */
117 #undef NETDRV_NDEBUG
118
119
120 #ifdef NETDRV_DEBUG
121 /* note: prints function name for you */
122 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
123 #else
124 # define DPRINTK(fmt, args...)
125 #endif
126
127 #ifdef NETDRV_NDEBUG
128 # define assert(expr) do {} while (0)
129 #else
130 # define assert(expr) \
131 if(!(expr)) { \
132 printk( "Assertion failed! %s,%s,%s,line=%d\n", \
133 #expr,__FILE__,__func__,__LINE__); \
134 }
135 #endif
136
137
138 /* A few user-configurable values. */
139 /* media options */
140 static int media[] = {-1, -1, -1, -1, -1, -1, -1, -1};
141
142 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
143 static int max_interrupt_work = 20;
144
145 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
146 The RTL chips use a 64 element hash table based on the Ethernet CRC. */
147 static int multicast_filter_limit = 32;
148
149 /* Size of the in-memory receive ring. */
150 #define RX_BUF_LEN_IDX 2 /* 0==8K, 1==16K, 2==32K, 3==64K */
151 #define RX_BUF_LEN (8192 << RX_BUF_LEN_IDX)
152 #define RX_BUF_PAD 16
153 #define RX_BUF_WRAP_PAD 2048 /* spare padding to handle lack of packet wrap */
154 #define RX_BUF_TOT_LEN (RX_BUF_LEN + RX_BUF_PAD + RX_BUF_WRAP_PAD)
155
156 /* Number of Tx descriptor registers. */
157 #define NUM_TX_DESC 4
158
159 /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
160 #define MAX_ETH_FRAME_SIZE 1536
161
162 /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */
163 #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE
164 #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC)
165
166 /* PCI Tuning Parameters
167 Threshold is bytes transferred to chip before transmission starts. */
168 #define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */
169
170 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
171 #define RX_FIFO_THRESH 6 /* Rx buffer level before first PCI xfer. */
172 #define RX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
173 #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
174
175
176 /* Operational parameters that usually are not changed. */
177 /* Time in jiffies before concluding the transmitter is hung. */
178 #define TX_TIMEOUT (6*HZ)
179
180
181 enum {
182 HAS_CHIP_XCVR = 0x020000,
183 HAS_LNK_CHNG = 0x040000,
184 };
185
186 #define NETDRV_MIN_IO_SIZE 0x80
187 #define RTL8139B_IO_SIZE 256
188
189 #define NETDRV_CAPS HAS_CHIP_XCVR|HAS_LNK_CHNG
190
191 typedef enum {
192 RTL8139 = 0,
193 NETDRV_CB,
194 SMC1211TX,
195 /*MPX5030,*/
196 DELTA8139,
197 ADDTRON8139,
198 } board_t;
199
200
201 /* indexed by board_t, above */
202 static struct {
203 const char *name;
204 } board_info[] __devinitdata = {
205 { "RealTek RTL8139 Fast Ethernet" },
206 { "RealTek RTL8139B PCI/CardBus" },
207 { "SMC1211TX EZCard 10/100 (RealTek RTL8139)" },
208 /* { MPX5030, "Accton MPX5030 (RealTek RTL8139)" },*/
209 { "Delta Electronics 8139 10/100BaseTX" },
210 { "Addtron Technolgy 8139 10/100BaseTX" },
211 };
212
213
214 static struct pci_device_id netdrv_pci_tbl[] = {
215 {0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
216 {0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, NETDRV_CB },
217 {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, SMC1211TX },
218 /* {0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MPX5030 },*/
219 {0x1500, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DELTA8139 },
220 {0x4033, 0x1360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ADDTRON8139 },
221 {0,}
222 };
223 MODULE_DEVICE_TABLE (pci, netdrv_pci_tbl);
224
225
226 /* The rest of these values should never change. */
227
228 /* Symbolic offsets to registers. */
229 enum NETDRV_registers {
230 MAC0 = 0, /* Ethernet hardware address. */
231 MAR0 = 8, /* Multicast filter. */
232 TxStatus0 = 0x10, /* Transmit status (Four 32bit registers). */
233 TxAddr0 = 0x20, /* Tx descriptors (also four 32bit). */
234 RxBuf = 0x30,
235 RxEarlyCnt = 0x34,
236 RxEarlyStatus = 0x36,
237 ChipCmd = 0x37,
238 RxBufPtr = 0x38,
239 RxBufAddr = 0x3A,
240 IntrMask = 0x3C,
241 IntrStatus = 0x3E,
242 TxConfig = 0x40,
243 ChipVersion = 0x43,
244 RxConfig = 0x44,
245 Timer = 0x48, /* A general-purpose counter. */
246 RxMissed = 0x4C, /* 24 bits valid, write clears. */
247 Cfg9346 = 0x50,
248 Config0 = 0x51,
249 Config1 = 0x52,
250 FlashReg = 0x54,
251 MediaStatus = 0x58,
252 Config3 = 0x59,
253 Config4 = 0x5A, /* absent on RTL-8139A */
254 HltClk = 0x5B,
255 MultiIntr = 0x5C,
256 TxSummary = 0x60,
257 BasicModeCtrl = 0x62,
258 BasicModeStatus = 0x64,
259 NWayAdvert = 0x66,
260 NWayLPAR = 0x68,
261 NWayExpansion = 0x6A,
262 /* Undocumented registers, but required for proper operation. */
263 FIFOTMS = 0x70, /* FIFO Control and test. */
264 CSCR = 0x74, /* Chip Status and Configuration Register. */
265 PARA78 = 0x78,
266 PARA7c = 0x7c, /* Magic transceiver parameter register. */
267 Config5 = 0xD8, /* absent on RTL-8139A */
268 };
269
270 enum ClearBitMasks {
271 MultiIntrClear = 0xF000,
272 ChipCmdClear = 0xE2,
273 Config1Clear = (1<<7)|(1<<6)|(1<<3)|(1<<2)|(1<<1),
274 };
275
276 enum ChipCmdBits {
277 CmdReset = 0x10,
278 CmdRxEnb = 0x08,
279 CmdTxEnb = 0x04,
280 RxBufEmpty = 0x01,
281 };
282
283 /* Interrupt register bits, using my own meaningful names. */
284 enum IntrStatusBits {
285 PCIErr = 0x8000,
286 PCSTimeout = 0x4000,
287 RxFIFOOver = 0x40,
288 RxUnderrun = 0x20,
289 RxOverflow = 0x10,
290 TxErr = 0x08,
291 TxOK = 0x04,
292 RxErr = 0x02,
293 RxOK = 0x01,
294 };
295 enum TxStatusBits {
296 TxHostOwns = 0x2000,
297 TxUnderrun = 0x4000,
298 TxStatOK = 0x8000,
299 TxOutOfWindow = 0x20000000,
300 TxAborted = 0x40000000,
301 TxCarrierLost = 0x80000000,
302 };
303 enum RxStatusBits {
304 RxMulticast = 0x8000,
305 RxPhysical = 0x4000,
306 RxBroadcast = 0x2000,
307 RxBadSymbol = 0x0020,
308 RxRunt = 0x0010,
309 RxTooLong = 0x0008,
310 RxCRCErr = 0x0004,
311 RxBadAlign = 0x0002,
312 RxStatusOK = 0x0001,
313 };
314
315 /* Bits in RxConfig. */
316 enum rx_mode_bits {
317 AcceptErr = 0x20,
318 AcceptRunt = 0x10,
319 AcceptBroadcast = 0x08,
320 AcceptMulticast = 0x04,
321 AcceptMyPhys = 0x02,
322 AcceptAllPhys = 0x01,
323 };
324
325 /* Bits in TxConfig. */
326 enum tx_config_bits {
327 TxIFG1 = (1 << 25), /* Interframe Gap Time */
328 TxIFG0 = (1 << 24), /* Enabling these bits violates IEEE 802.3 */
329 TxLoopBack = (1 << 18) | (1 << 17), /* enable loopback test mode */
330 TxCRC = (1 << 16), /* DISABLE appending CRC to end of Tx packets */
331 TxClearAbt = (1 << 0), /* Clear abort (WO) */
332 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
333
334 TxVersionMask = 0x7C800000, /* mask out version bits 30-26, 23 */
335 };
336
337 /* Bits in Config1 */
338 enum Config1Bits {
339 Cfg1_PM_Enable = 0x01,
340 Cfg1_VPD_Enable = 0x02,
341 Cfg1_PIO = 0x04,
342 Cfg1_MMIO = 0x08,
343 Cfg1_LWAKE = 0x10,
344 Cfg1_Driver_Load = 0x20,
345 Cfg1_LED0 = 0x40,
346 Cfg1_LED1 = 0x80,
347 };
348
349 enum RxConfigBits {
350 /* Early Rx threshold, none or X/16 */
351 RxCfgEarlyRxNone = 0,
352 RxCfgEarlyRxShift = 24,
353
354 /* rx fifo threshold */
355 RxCfgFIFOShift = 13,
356 RxCfgFIFONone = (7 << RxCfgFIFOShift),
357
358 /* Max DMA burst */
359 RxCfgDMAShift = 8,
360 RxCfgDMAUnlimited = (7 << RxCfgDMAShift),
361
362 /* rx ring buffer length */
363 RxCfgRcv8K = 0,
364 RxCfgRcv16K = (1 << 11),
365 RxCfgRcv32K = (1 << 12),
366 RxCfgRcv64K = (1 << 11) | (1 << 12),
367
368 /* Disable packet wrap at end of Rx buffer */
369 RxNoWrap = (1 << 7),
370 };
371
372
373 /* Twister tuning parameters from RealTek.
374 Completely undocumented, but required to tune bad links. */
375 enum CSCRBits {
376 CSCR_LinkOKBit = 0x0400,
377 CSCR_LinkChangeBit = 0x0800,
378 CSCR_LinkStatusBits = 0x0f000,
379 CSCR_LinkDownOffCmd = 0x003c0,
380 CSCR_LinkDownCmd = 0x0f3c0,
381 };
382
383
384 enum Cfg9346Bits {
385 Cfg9346_Lock = 0x00,
386 Cfg9346_Unlock = 0xC0,
387 };
388
389
390 #define PARA78_default 0x78fa8388
391 #define PARA7c_default 0xcb38de43 /* param[0][3] */
392 #define PARA7c_xxx 0xcb38de43
393 static const unsigned long param[4][4] = {
394 {0xcb39de43, 0xcb39ce43, 0xfb38de03, 0xcb38de43},
395 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
396 {0xcb39de43, 0xcb39ce43, 0xcb39ce83, 0xcb39ce83},
397 {0xbb39de43, 0xbb39ce43, 0xbb39ce83, 0xbb39ce83}
398 };
399
400 struct ring_info {
401 struct sk_buff *skb;
402 dma_addr_t mapping;
403 };
404
405
406 typedef enum {
407 CH_8139 = 0,
408 CH_8139_K,
409 CH_8139A,
410 CH_8139B,
411 CH_8130,
412 CH_8139C,
413 } chip_t;
414
415
416 /* directly indexed by chip_t, above */
417 static const struct {
418 const char *name;
419 u8 version; /* from RTL8139C docs */
420 u32 RxConfigMask; /* should clear the bits supported by this chip */
421 } rtl_chip_info[] = {
422 { "RTL-8139",
423 0x40,
424 0xf0fe0040, /* XXX copied from RTL8139A, verify */
425 },
426
427 { "RTL-8139 rev K",
428 0x60,
429 0xf0fe0040,
430 },
431
432 { "RTL-8139A",
433 0x70,
434 0xf0fe0040,
435 },
436
437 { "RTL-8139B",
438 0x78,
439 0xf0fc0040
440 },
441
442 { "RTL-8130",
443 0x7C,
444 0xf0fe0040, /* XXX copied from RTL8139A, verify */
445 },
446
447 { "RTL-8139C",
448 0x74,
449 0xf0fc0040, /* XXX copied from RTL8139B, verify */
450 },
451
452 };
453
454
455 struct netdrv_private {
456 board_t board;
457 void *mmio_addr;
458 int drv_flags;
459 struct pci_dev *pci_dev;
460 struct timer_list timer; /* Media selection timer. */
461 unsigned char *rx_ring;
462 unsigned int cur_rx; /* Index into the Rx buffer of next Rx pkt. */
463 unsigned int tx_flag;
464 atomic_t cur_tx;
465 atomic_t dirty_tx;
466 /* The saved address of a sent-in-place packet/buffer, for skfree(). */
467 struct ring_info tx_info[NUM_TX_DESC];
468 unsigned char *tx_buf[NUM_TX_DESC]; /* Tx bounce buffers */
469 unsigned char *tx_bufs; /* Tx bounce buffer region. */
470 dma_addr_t rx_ring_dma;
471 dma_addr_t tx_bufs_dma;
472 char phys[4]; /* MII device addresses. */
473 char twistie, twist_row, twist_col; /* Twister tune state. */
474 unsigned int full_duplex:1; /* Full-duplex operation requested. */
475 unsigned int duplex_lock:1;
476 unsigned int default_port:4; /* Last dev->if_port value. */
477 unsigned int media2:4; /* Secondary monitored media port. */
478 unsigned int medialock:1; /* Don't sense media type. */
479 unsigned int mediasense:1; /* Media sensing in progress. */
480 spinlock_t lock;
481 chip_t chipset;
482 };
483
484 MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>");
485 MODULE_DESCRIPTION ("Skeleton for a PCI Fast Ethernet driver");
486 MODULE_LICENSE("GPL");
487 module_param(multicast_filter_limit, int, 0);
488 module_param(max_interrupt_work, int, 0);
489 module_param_array(media, int, NULL, 0);
490 MODULE_PARM_DESC (multicast_filter_limit, "pci-skeleton maximum number of filtered multicast addresses");
491 MODULE_PARM_DESC (max_interrupt_work, "pci-skeleton maximum events handled per interrupt");
492 MODULE_PARM_DESC (media, "pci-skeleton: Bits 0-3: media type, bit 17: full duplex");
493
494 static int read_eeprom (void *ioaddr, int location, int addr_len);
495 static int netdrv_open (struct net_device *dev);
496 static int mdio_read (struct net_device *dev, int phy_id, int location);
497 static void mdio_write (struct net_device *dev, int phy_id, int location,
498 int val);
499 static void netdrv_timer (unsigned long data);
500 static void netdrv_tx_timeout (struct net_device *dev);
501 static void netdrv_init_ring (struct net_device *dev);
502 static int netdrv_start_xmit (struct sk_buff *skb,
503 struct net_device *dev);
504 static irqreturn_t netdrv_interrupt (int irq, void *dev_instance);
505 static int netdrv_close (struct net_device *dev);
506 static int netdrv_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
507 static void netdrv_set_rx_mode (struct net_device *dev);
508 static void netdrv_hw_start (struct net_device *dev);
509
510
511 #ifdef USE_IO_OPS
512
513 #define NETDRV_R8(reg) inb (((unsigned long)ioaddr) + (reg))
514 #define NETDRV_R16(reg) inw (((unsigned long)ioaddr) + (reg))
515 #define NETDRV_R32(reg) ((unsigned long) inl (((unsigned long)ioaddr) + (reg)))
516 #define NETDRV_W8(reg, val8) outb ((val8), ((unsigned long)ioaddr) + (reg))
517 #define NETDRV_W16(reg, val16) outw ((val16), ((unsigned long)ioaddr) + (reg))
518 #define NETDRV_W32(reg, val32) outl ((val32), ((unsigned long)ioaddr) + (reg))
519 #define NETDRV_W8_F NETDRV_W8
520 #define NETDRV_W16_F NETDRV_W16
521 #define NETDRV_W32_F NETDRV_W32
522 #undef readb
523 #undef readw
524 #undef readl
525 #undef writeb
526 #undef writew
527 #undef writel
528 #define readb(addr) inb((unsigned long)(addr))
529 #define readw(addr) inw((unsigned long)(addr))
530 #define readl(addr) inl((unsigned long)(addr))
531 #define writeb(val,addr) outb((val),(unsigned long)(addr))
532 #define writew(val,addr) outw((val),(unsigned long)(addr))
533 #define writel(val,addr) outl((val),(unsigned long)(addr))
534
535 #else
536
537 /* write MMIO register, with flush */
538 /* Flush avoids rtl8139 bug w/ posted MMIO writes */
539 #define NETDRV_W8_F(reg, val8) do { writeb ((val8), ioaddr + (reg)); readb (ioaddr + (reg)); } while (0)
540 #define NETDRV_W16_F(reg, val16) do { writew ((val16), ioaddr + (reg)); readw (ioaddr + (reg)); } while (0)
541 #define NETDRV_W32_F(reg, val32) do { writel ((val32), ioaddr + (reg)); readl (ioaddr + (reg)); } while (0)
542
543
544 #ifdef MMIO_FLUSH_AUDIT_COMPLETE
545
546 /* write MMIO register */
547 #define NETDRV_W8(reg, val8) writeb ((val8), ioaddr + (reg))
548 #define NETDRV_W16(reg, val16) writew ((val16), ioaddr + (reg))
549 #define NETDRV_W32(reg, val32) writel ((val32), ioaddr + (reg))
550
551 #else
552
553 /* write MMIO register, then flush */
554 #define NETDRV_W8 NETDRV_W8_F
555 #define NETDRV_W16 NETDRV_W16_F
556 #define NETDRV_W32 NETDRV_W32_F
557
558 #endif /* MMIO_FLUSH_AUDIT_COMPLETE */
559
560 /* read MMIO register */
561 #define NETDRV_R8(reg) readb (ioaddr + (reg))
562 #define NETDRV_R16(reg) readw (ioaddr + (reg))
563 #define NETDRV_R32(reg) ((unsigned long) readl (ioaddr + (reg)))
564
565 #endif /* USE_IO_OPS */
566
567
568 static const u16 netdrv_intr_mask =
569 PCIErr | PCSTimeout | RxUnderrun | RxOverflow | RxFIFOOver |
570 TxErr | TxOK | RxErr | RxOK;
571
572 static const unsigned int netdrv_rx_config =
573 RxCfgEarlyRxNone | RxCfgRcv32K | RxNoWrap |
574 (RX_FIFO_THRESH << RxCfgFIFOShift) |
575 (RX_DMA_BURST << RxCfgDMAShift);
576
577
578 static int __devinit netdrv_init_board (struct pci_dev *pdev,
579 struct net_device **dev_out,
580 void **ioaddr_out)
581 {
582 void *ioaddr = NULL;
583 struct net_device *dev;
584 struct netdrv_private *tp;
585 int rc, i;
586 u32 pio_start, pio_end, pio_flags, pio_len;
587 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
588 u32 tmp;
589
590 DPRINTK ("ENTER\n");
591
592 assert (pdev != NULL);
593 assert (ioaddr_out != NULL);
594
595 *ioaddr_out = NULL;
596 *dev_out = NULL;
597
598 /* dev zeroed in alloc_etherdev */
599 dev = alloc_etherdev (sizeof (*tp));
600 if (dev == NULL) {
601 dev_err(&pdev->dev, "unable to alloc new ethernet\n");
602 DPRINTK ("EXIT, returning -ENOMEM\n");
603 return -ENOMEM;
604 }
605 SET_NETDEV_DEV(dev, &pdev->dev);
606 tp = netdev_priv(dev);
607
608 /* enable device (incl. PCI PM wakeup), and bus-mastering */
609 rc = pci_enable_device (pdev);
610 if (rc)
611 goto err_out;
612
613 pio_start = pci_resource_start (pdev, 0);
614 pio_end = pci_resource_end (pdev, 0);
615 pio_flags = pci_resource_flags (pdev, 0);
616 pio_len = pci_resource_len (pdev, 0);
617
618 mmio_start = pci_resource_start (pdev, 1);
619 mmio_end = pci_resource_end (pdev, 1);
620 mmio_flags = pci_resource_flags (pdev, 1);
621 mmio_len = pci_resource_len (pdev, 1);
622
623 /* set this immediately, we need to know before
624 * we talk to the chip directly */
625 DPRINTK("PIO region size == 0x%02X\n", pio_len);
626 DPRINTK("MMIO region size == 0x%02lX\n", mmio_len);
627
628 /* make sure PCI base addr 0 is PIO */
629 if (!(pio_flags & IORESOURCE_IO)) {
630 dev_err(&pdev->dev, "region #0 not a PIO resource, aborting\n");
631 rc = -ENODEV;
632 goto err_out;
633 }
634
635 /* make sure PCI base addr 1 is MMIO */
636 if (!(mmio_flags & IORESOURCE_MEM)) {
637 dev_err(&pdev->dev, "region #1 not an MMIO resource, aborting\n");
638 rc = -ENODEV;
639 goto err_out;
640 }
641
642 /* check for weird/broken PCI region reporting */
643 if ((pio_len < NETDRV_MIN_IO_SIZE) ||
644 (mmio_len < NETDRV_MIN_IO_SIZE)) {
645 dev_err(&pdev->dev, "Invalid PCI region size(s), aborting\n");
646 rc = -ENODEV;
647 goto err_out;
648 }
649
650 rc = pci_request_regions (pdev, MODNAME);
651 if (rc)
652 goto err_out;
653
654 pci_set_master (pdev);
655
656 #ifdef USE_IO_OPS
657 ioaddr = (void *) pio_start;
658 #else
659 /* ioremap MMIO region */
660 ioaddr = ioremap (mmio_start, mmio_len);
661 if (ioaddr == NULL) {
662 dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
663 rc = -EIO;
664 goto err_out_free_res;
665 }
666 #endif /* USE_IO_OPS */
667
668 /* Soft reset the chip. */
669 NETDRV_W8 (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear) | CmdReset);
670
671 /* Check that the chip has finished the reset. */
672 for (i = 1000; i > 0; i--)
673 if ((NETDRV_R8 (ChipCmd) & CmdReset) == 0)
674 break;
675 else
676 udelay (10);
677
678 /* Bring the chip out of low-power mode. */
679 /* <insert device-specific code here> */
680
681 #ifndef USE_IO_OPS
682 /* sanity checks -- ensure PIO and MMIO registers agree */
683 assert (inb (pio_start+Config0) == readb (ioaddr+Config0));
684 assert (inb (pio_start+Config1) == readb (ioaddr+Config1));
685 assert (inb (pio_start+TxConfig) == readb (ioaddr+TxConfig));
686 assert (inb (pio_start+RxConfig) == readb (ioaddr+RxConfig));
687 #endif /* !USE_IO_OPS */
688
689 /* identify chip attached to board */
690 tmp = NETDRV_R8 (ChipVersion);
691 for (i = ARRAY_SIZE (rtl_chip_info) - 1; i >= 0; i--)
692 if (tmp == rtl_chip_info[i].version) {
693 tp->chipset = i;
694 goto match;
695 }
696
697 /* if unknown chip, assume array element #0, original RTL-8139 in this case */
698 dev_printk (KERN_DEBUG, &pdev->dev,
699 "unknown chip version, assuming RTL-8139\n");
700 dev_printk (KERN_DEBUG, &pdev->dev, "TxConfig = 0x%lx\n",
701 NETDRV_R32 (TxConfig));
702 tp->chipset = 0;
703
704 match:
705 DPRINTK ("chipset id (%d) == index %d, '%s'\n",
706 tmp,
707 tp->chipset,
708 rtl_chip_info[tp->chipset].name);
709
710 rc = register_netdev (dev);
711 if (rc)
712 goto err_out_unmap;
713
714 DPRINTK ("EXIT, returning 0\n");
715 *ioaddr_out = ioaddr;
716 *dev_out = dev;
717 return 0;
718
719 err_out_unmap:
720 #ifndef USE_IO_OPS
721 iounmap(ioaddr);
722 err_out_free_res:
723 #endif
724 pci_release_regions (pdev);
725 err_out:
726 free_netdev (dev);
727 DPRINTK ("EXIT, returning %d\n", rc);
728 return rc;
729 }
730
731 static const struct net_device_ops netdrv_netdev_ops = {
732 .ndo_open = netdrv_open,
733 .ndo_stop = netdrv_close,
734 .ndo_start_xmit = netdrv_start_xmit,
735 .ndo_set_multicast_list = netdrv_set_rx_mode,
736 .ndo_do_ioctl = netdrv_ioctl,
737 .ndo_tx_timeout = netdrv_tx_timeout,
738 .ndo_change_mtu = eth_change_mtu,
739 .ndo_validate_addr = eth_validate_addr,
740 .ndo_set_mac_address = eth_mac_addr,
741 };
742
743 static int __devinit netdrv_init_one (struct pci_dev *pdev,
744 const struct pci_device_id *ent)
745 {
746 struct net_device *dev = NULL;
747 struct netdrv_private *tp;
748 int i, addr_len, option;
749 void *ioaddr = NULL;
750 static int board_idx = -1;
751
752 /* when built into the kernel, we only print version if device is found */
753 #ifndef MODULE
754 static int printed_version;
755 if (!printed_version++)
756 printk(version);
757 #endif
758
759 DPRINTK ("ENTER\n");
760
761 assert (pdev != NULL);
762 assert (ent != NULL);
763
764 board_idx++;
765
766 i = netdrv_init_board (pdev, &dev, &ioaddr);
767 if (i < 0) {
768 DPRINTK ("EXIT, returning %d\n", i);
769 return i;
770 }
771
772 tp = netdev_priv(dev);
773
774 assert (ioaddr != NULL);
775 assert (dev != NULL);
776 assert (tp != NULL);
777
778 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
779 for (i = 0; i < 3; i++)
780 ((u16 *) (dev->dev_addr))[i] =
781 le16_to_cpu (read_eeprom (ioaddr, i + 7, addr_len));
782
783 dev->netdev_ops = &netdrv_netdev_ops;
784 dev->watchdog_timeo = TX_TIMEOUT;
785
786 dev->irq = pdev->irq;
787 dev->base_addr = (unsigned long) ioaddr;
788
789 /* netdev_priv()/tp zeroed and aligned in alloc_etherdev */
790 tp = netdev_priv(dev);
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, %pM IRQ %d\n",
805 dev->name,
806 board_info[ent->driver_data].name,
807 dev->base_addr,
808 dev->dev_addr,
809 dev->irq);
810
811 printk (KERN_DEBUG "%s: Identified 8139 chip type '%s'\n",
812 dev->name, rtl_chip_info[tp->chipset].name);
813
814 /* Put the chip into low-power mode. */
815 NETDRV_W8_F (Cfg9346, Cfg9346_Unlock);
816
817 /* The lower four bits are the media type. */
818 option = (board_idx > 7) ? 0 : media[board_idx];
819 if (option > 0) {
820 tp->full_duplex = (option & 0x200) ? 1 : 0;
821 tp->default_port = option & 15;
822 if (tp->default_port)
823 tp->medialock = 1;
824 }
825
826 if (tp->full_duplex) {
827 printk (KERN_INFO
828 "%s: Media type forced to Full Duplex.\n",
829 dev->name);
830 mdio_write (dev, tp->phys[0], MII_ADVERTISE, ADVERTISE_FULL);
831 tp->duplex_lock = 1;
832 }
833
834 DPRINTK ("EXIT - returning 0\n");
835 return 0;
836 }
837
838
839 static void __devexit netdrv_remove_one (struct pci_dev *pdev)
840 {
841 struct net_device *dev = pci_get_drvdata (pdev);
842 struct netdrv_private *np;
843
844 DPRINTK ("ENTER\n");
845
846 assert (dev != NULL);
847
848 np = netdev_priv(dev);
849 assert (np != NULL);
850
851 unregister_netdev (dev);
852
853 #ifndef USE_IO_OPS
854 iounmap (np->mmio_addr);
855 #endif /* !USE_IO_OPS */
856
857 pci_release_regions (pdev);
858
859 free_netdev (dev);
860
861 pci_set_drvdata (pdev, NULL);
862
863 pci_disable_device (pdev);
864
865 DPRINTK ("EXIT\n");
866 }
867
868
869 /* Serial EEPROM section. */
870
871 /* EEPROM_Ctrl bits. */
872 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
873 #define EE_CS 0x08 /* EEPROM chip select. */
874 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
875 #define EE_WRITE_0 0x00
876 #define EE_WRITE_1 0x02
877 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
878 #define EE_ENB (0x80 | EE_CS)
879
880 /* Delay between EEPROM clock transitions.
881 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
882 */
883
884 #define eeprom_delay() readl(ee_addr)
885
886 /* The EEPROM commands include the alway-set leading bit. */
887 #define EE_WRITE_CMD (5)
888 #define EE_READ_CMD (6)
889 #define EE_ERASE_CMD (7)
890
891 static int __devinit read_eeprom (void *ioaddr, int location, int addr_len)
892 {
893 int i;
894 unsigned retval = 0;
895 void *ee_addr = ioaddr + Cfg9346;
896 int read_cmd = location | (EE_READ_CMD << addr_len);
897
898 DPRINTK ("ENTER\n");
899
900 writeb (EE_ENB & ~EE_CS, ee_addr);
901 writeb (EE_ENB, ee_addr);
902 eeprom_delay ();
903
904 /* Shift the read command bits out. */
905 for (i = 4 + addr_len; i >= 0; i--) {
906 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
907 writeb (EE_ENB | dataval, ee_addr);
908 eeprom_delay ();
909 writeb (EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
910 eeprom_delay ();
911 }
912 writeb (EE_ENB, ee_addr);
913 eeprom_delay ();
914
915 for (i = 16; i > 0; i--) {
916 writeb (EE_ENB | EE_SHIFT_CLK, ee_addr);
917 eeprom_delay ();
918 retval =
919 (retval << 1) | ((readb (ee_addr) & EE_DATA_READ) ? 1 :
920 0);
921 writeb (EE_ENB, ee_addr);
922 eeprom_delay ();
923 }
924
925 /* Terminate the EEPROM access. */
926 writeb (~EE_CS, ee_addr);
927 eeprom_delay ();
928
929 DPRINTK ("EXIT - returning %d\n", retval);
930 return retval;
931 }
932
933 /* MII serial management: mostly bogus for now. */
934 /* Read and write the MII management registers using software-generated
935 serial MDIO protocol.
936 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
937 met by back-to-back PCI I/O cycles, but we insert a delay to avoid
938 "overclocking" issues. */
939 #define MDIO_DIR 0x80
940 #define MDIO_DATA_OUT 0x04
941 #define MDIO_DATA_IN 0x02
942 #define MDIO_CLK 0x01
943 #define MDIO_WRITE0 (MDIO_DIR)
944 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT)
945
946 #define mdio_delay() readb(mdio_addr)
947
948
949 static char mii_2_8139_map[8] = {
950 BasicModeCtrl,
951 BasicModeStatus,
952 0,
953 0,
954 NWayAdvert,
955 NWayLPAR,
956 NWayExpansion,
957 0
958 };
959
960
961 /* Syncronize the MII management interface by shifting 32 one bits out. */
962 static void mdio_sync (void *mdio_addr)
963 {
964 int i;
965
966 DPRINTK ("ENTER\n");
967
968 for (i = 32; i >= 0; i--) {
969 writeb (MDIO_WRITE1, mdio_addr);
970 mdio_delay ();
971 writeb (MDIO_WRITE1 | MDIO_CLK, mdio_addr);
972 mdio_delay ();
973 }
974
975 DPRINTK ("EXIT\n");
976 }
977
978
979 static int mdio_read (struct net_device *dev, int phy_id, int location)
980 {
981 struct netdrv_private *tp = netdev_priv(dev);
982 void *mdio_addr = tp->mmio_addr + Config4;
983 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
984 int retval = 0;
985 int i;
986
987 DPRINTK ("ENTER\n");
988
989 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
990 DPRINTK ("EXIT after directly using 8139 internal regs\n");
991 return location < 8 && mii_2_8139_map[location] ?
992 readw (tp->mmio_addr + mii_2_8139_map[location]) : 0;
993 }
994 mdio_sync (mdio_addr);
995 /* Shift the read command bits out. */
996 for (i = 15; i >= 0; i--) {
997 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0;
998
999 writeb (MDIO_DIR | dataval, mdio_addr);
1000 mdio_delay ();
1001 writeb (MDIO_DIR | dataval | MDIO_CLK, mdio_addr);
1002 mdio_delay ();
1003 }
1004
1005 /* Read the two transition, 16 data, and wire-idle bits. */
1006 for (i = 19; i > 0; i--) {
1007 writeb (0, mdio_addr);
1008 mdio_delay ();
1009 retval =
1010 (retval << 1) | ((readb (mdio_addr) & MDIO_DATA_IN) ? 1
1011 : 0);
1012 writeb (MDIO_CLK, mdio_addr);
1013 mdio_delay ();
1014 }
1015
1016 DPRINTK ("EXIT, returning %d\n", (retval >> 1) & 0xffff);
1017 return (retval >> 1) & 0xffff;
1018 }
1019
1020
1021 static void mdio_write (struct net_device *dev, int phy_id, int location,
1022 int value)
1023 {
1024 struct netdrv_private *tp = netdev_priv(dev);
1025 void *mdio_addr = tp->mmio_addr + Config4;
1026 int mii_cmd =
1027 (0x5002 << 16) | (phy_id << 23) | (location << 18) | value;
1028 int i;
1029
1030 DPRINTK ("ENTER\n");
1031
1032 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1033 if (location < 8 && mii_2_8139_map[location]) {
1034 writew (value,
1035 tp->mmio_addr + mii_2_8139_map[location]);
1036 readw (tp->mmio_addr + mii_2_8139_map[location]);
1037 }
1038 DPRINTK ("EXIT after directly using 8139 internal regs\n");
1039 return;
1040 }
1041 mdio_sync (mdio_addr);
1042
1043 /* Shift the command bits out. */
1044 for (i = 31; i >= 0; i--) {
1045 int dataval =
1046 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
1047 writeb (dataval, mdio_addr);
1048 mdio_delay ();
1049 writeb (dataval | MDIO_CLK, mdio_addr);
1050 mdio_delay ();
1051 }
1052
1053 /* Clear out extra bits. */
1054 for (i = 2; i > 0; i--) {
1055 writeb (0, mdio_addr);
1056 mdio_delay ();
1057 writeb (MDIO_CLK, mdio_addr);
1058 mdio_delay ();
1059 }
1060
1061 DPRINTK ("EXIT\n");
1062 }
1063
1064
1065 static int netdrv_open (struct net_device *dev)
1066 {
1067 struct netdrv_private *tp = netdev_priv(dev);
1068 int retval;
1069 #ifdef NETDRV_DEBUG
1070 void *ioaddr = tp->mmio_addr;
1071 #endif
1072
1073 DPRINTK ("ENTER\n");
1074
1075 retval = request_irq (dev->irq, netdrv_interrupt, IRQF_SHARED, dev->name, dev);
1076 if (retval) {
1077 DPRINTK ("EXIT, returning %d\n", retval);
1078 return retval;
1079 }
1080
1081 tp->tx_bufs = pci_alloc_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1082 &tp->tx_bufs_dma);
1083 tp->rx_ring = pci_alloc_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1084 &tp->rx_ring_dma);
1085 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1086 free_irq(dev->irq, dev);
1087
1088 if (tp->tx_bufs)
1089 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1090 tp->tx_bufs, tp->tx_bufs_dma);
1091 if (tp->rx_ring)
1092 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1093 tp->rx_ring, tp->rx_ring_dma);
1094
1095 DPRINTK ("EXIT, returning -ENOMEM\n");
1096 return -ENOMEM;
1097
1098 }
1099
1100 tp->full_duplex = tp->duplex_lock;
1101 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1102
1103 netdrv_init_ring (dev);
1104 netdrv_hw_start (dev);
1105
1106 DPRINTK ("%s: netdrv_open() ioaddr %#lx IRQ %d"
1107 " GP Pins %2.2x %s-duplex.\n",
1108 dev->name, pci_resource_start (tp->pci_dev, 1),
1109 dev->irq, NETDRV_R8 (MediaStatus),
1110 tp->full_duplex ? "full" : "half");
1111
1112 /* Set the timer to switch to check for link beat and perhaps switch
1113 to an alternate media type. */
1114 init_timer (&tp->timer);
1115 tp->timer.expires = jiffies + 3 * HZ;
1116 tp->timer.data = (unsigned long) dev;
1117 tp->timer.function = &netdrv_timer;
1118 add_timer (&tp->timer);
1119
1120 DPRINTK ("EXIT, returning 0\n");
1121 return 0;
1122 }
1123
1124
1125 /* Start the hardware at open or resume. */
1126 static void netdrv_hw_start (struct net_device *dev)
1127 {
1128 struct netdrv_private *tp = netdev_priv(dev);
1129 void *ioaddr = tp->mmio_addr;
1130 u32 i;
1131
1132 DPRINTK ("ENTER\n");
1133
1134 /* Soft reset the chip. */
1135 NETDRV_W8 (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear) | CmdReset);
1136 udelay (100);
1137
1138 /* Check that the chip has finished the reset. */
1139 for (i = 1000; i > 0; i--)
1140 if ((NETDRV_R8 (ChipCmd) & CmdReset) == 0)
1141 break;
1142
1143 /* Restore our idea of the MAC address. */
1144 NETDRV_W32_F (MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0)));
1145 NETDRV_W32_F (MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4)));
1146
1147 /* Must enable Tx/Rx before setting transfer thresholds! */
1148 NETDRV_W8_F (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear) |
1149 CmdRxEnb | CmdTxEnb);
1150
1151 i = netdrv_rx_config |
1152 (NETDRV_R32 (RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
1153 NETDRV_W32_F (RxConfig, i);
1154
1155 /* Check this value: the documentation for IFG contradicts ifself. */
1156 NETDRV_W32 (TxConfig, (TX_DMA_BURST << TxDMAShift));
1157
1158 /* unlock Config[01234] and BMCR register writes */
1159 NETDRV_W8_F (Cfg9346, Cfg9346_Unlock);
1160 udelay (10);
1161
1162 tp->cur_rx = 0;
1163
1164 /* Lock Config[01234] and BMCR register writes */
1165 NETDRV_W8_F (Cfg9346, Cfg9346_Lock);
1166 udelay (10);
1167
1168 /* init Rx ring buffer DMA address */
1169 NETDRV_W32_F (RxBuf, tp->rx_ring_dma);
1170
1171 /* init Tx buffer DMA addresses */
1172 for (i = 0; i < NUM_TX_DESC; i++)
1173 NETDRV_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1174
1175 NETDRV_W32_F (RxMissed, 0);
1176
1177 netdrv_set_rx_mode (dev);
1178
1179 /* no early-rx interrupts */
1180 NETDRV_W16 (MultiIntr, NETDRV_R16 (MultiIntr) & MultiIntrClear);
1181
1182 /* make sure RxTx has started */
1183 NETDRV_W8_F (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear) |
1184 CmdRxEnb | CmdTxEnb);
1185
1186 /* Enable all known interrupts by setting the interrupt mask. */
1187 NETDRV_W16_F (IntrMask, netdrv_intr_mask);
1188
1189 netif_start_queue (dev);
1190
1191 DPRINTK ("EXIT\n");
1192 }
1193
1194
1195 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1196 static void netdrv_init_ring (struct net_device *dev)
1197 {
1198 struct netdrv_private *tp = netdev_priv(dev);
1199 int i;
1200
1201 DPRINTK ("ENTER\n");
1202
1203 tp->cur_rx = 0;
1204 atomic_set (&tp->cur_tx, 0);
1205 atomic_set (&tp->dirty_tx, 0);
1206
1207 for (i = 0; i < NUM_TX_DESC; i++) {
1208 tp->tx_info[i].skb = NULL;
1209 tp->tx_info[i].mapping = 0;
1210 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1211 }
1212
1213 DPRINTK ("EXIT\n");
1214 }
1215
1216
1217 static void netdrv_timer (unsigned long data)
1218 {
1219 struct net_device *dev = (struct net_device *) data;
1220 struct netdrv_private *tp = netdev_priv(dev);
1221 void *ioaddr = tp->mmio_addr;
1222 int next_tick = 60 * HZ;
1223 int mii_lpa;
1224
1225 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA);
1226
1227 if (!tp->duplex_lock && mii_lpa != 0xffff) {
1228 int duplex = (mii_lpa & LPA_100FULL)
1229 || (mii_lpa & 0x01C0) == 0x0040;
1230 if (tp->full_duplex != duplex) {
1231 tp->full_duplex = duplex;
1232 printk (KERN_INFO
1233 "%s: Setting %s-duplex based on MII #%d link"
1234 " partner ability of %4.4x.\n", dev->name,
1235 tp->full_duplex ? "full" : "half",
1236 tp->phys[0], mii_lpa);
1237 NETDRV_W8 (Cfg9346, Cfg9346_Unlock);
1238 NETDRV_W8 (Config1, tp->full_duplex ? 0x60 : 0x20);
1239 NETDRV_W8 (Cfg9346, Cfg9346_Lock);
1240 }
1241 }
1242
1243 DPRINTK ("%s: Media selection tick, Link partner %4.4x.\n",
1244 dev->name, NETDRV_R16 (NWayLPAR));
1245 DPRINTK ("%s: Other registers are IntMask %4.4x IntStatus %4.4x"
1246 " RxStatus %4.4x.\n", dev->name,
1247 NETDRV_R16 (IntrMask),
1248 NETDRV_R16 (IntrStatus),
1249 NETDRV_R32 (RxEarlyStatus));
1250 DPRINTK ("%s: Chip config %2.2x %2.2x.\n",
1251 dev->name, NETDRV_R8 (Config0),
1252 NETDRV_R8 (Config1));
1253
1254 tp->timer.expires = jiffies + next_tick;
1255 add_timer (&tp->timer);
1256 }
1257
1258
1259 static void netdrv_tx_clear (struct net_device *dev)
1260 {
1261 int i;
1262 struct netdrv_private *tp = netdev_priv(dev);
1263
1264 atomic_set (&tp->cur_tx, 0);
1265 atomic_set (&tp->dirty_tx, 0);
1266
1267 /* Dump the unsent Tx packets. */
1268 for (i = 0; i < NUM_TX_DESC; i++) {
1269 struct ring_info *rp = &tp->tx_info[i];
1270 if (rp->mapping != 0) {
1271 pci_unmap_single (tp->pci_dev, rp->mapping,
1272 rp->skb->len, PCI_DMA_TODEVICE);
1273 rp->mapping = 0;
1274 }
1275 if (rp->skb) {
1276 dev_kfree_skb (rp->skb);
1277 rp->skb = NULL;
1278 dev->stats.tx_dropped++;
1279 }
1280 }
1281 }
1282
1283
1284 static void netdrv_tx_timeout (struct net_device *dev)
1285 {
1286 struct netdrv_private *tp = netdev_priv(dev);
1287 void *ioaddr = tp->mmio_addr;
1288 int i;
1289 u8 tmp8;
1290 unsigned long flags;
1291
1292 DPRINTK ("%s: Transmit timeout, status %2.2x %4.4x "
1293 "media %2.2x.\n", dev->name,
1294 NETDRV_R8 (ChipCmd),
1295 NETDRV_R16 (IntrStatus),
1296 NETDRV_R8 (MediaStatus));
1297
1298 /* disable Tx ASAP, if not already */
1299 tmp8 = NETDRV_R8 (ChipCmd);
1300 if (tmp8 & CmdTxEnb)
1301 NETDRV_W8 (ChipCmd, tmp8 & ~CmdTxEnb);
1302
1303 /* Disable interrupts by clearing the interrupt mask. */
1304 NETDRV_W16 (IntrMask, 0x0000);
1305
1306 /* Emit info to figure out what went wrong. */
1307 printk (KERN_DEBUG "%s: Tx queue start entry %d dirty entry %d.\n",
1308 dev->name, atomic_read (&tp->cur_tx),
1309 atomic_read (&tp->dirty_tx));
1310 for (i = 0; i < NUM_TX_DESC; i++)
1311 printk (KERN_DEBUG "%s: Tx descriptor %d is %8.8lx.%s\n",
1312 dev->name, i, NETDRV_R32 (TxStatus0 + (i * 4)),
1313 i == atomic_read (&tp->dirty_tx) % NUM_TX_DESC ?
1314 " (queue head)" : "");
1315
1316 /* Stop a shared interrupt from scavenging while we are. */
1317 spin_lock_irqsave (&tp->lock, flags);
1318
1319 netdrv_tx_clear (dev);
1320
1321 spin_unlock_irqrestore (&tp->lock, flags);
1322
1323 /* ...and finally, reset everything */
1324 netdrv_hw_start (dev);
1325
1326 netif_wake_queue (dev);
1327 }
1328
1329
1330
1331 static int netdrv_start_xmit (struct sk_buff *skb, struct net_device *dev)
1332 {
1333 struct netdrv_private *tp = netdev_priv(dev);
1334 void *ioaddr = tp->mmio_addr;
1335 int entry;
1336
1337 /* Calculate the next Tx descriptor entry. */
1338 entry = atomic_read (&tp->cur_tx) % NUM_TX_DESC;
1339
1340 assert (tp->tx_info[entry].skb == NULL);
1341 assert (tp->tx_info[entry].mapping == 0);
1342
1343 tp->tx_info[entry].skb = skb;
1344 /* tp->tx_info[entry].mapping = 0; */
1345 skb_copy_from_linear_data(skb, tp->tx_buf[entry], skb->len);
1346
1347 /* Note: the chip doesn't have auto-pad! */
1348 NETDRV_W32 (TxStatus0 + (entry * sizeof(u32)),
1349 tp->tx_flag | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN));
1350
1351 dev->trans_start = jiffies;
1352 atomic_inc (&tp->cur_tx);
1353 if ((atomic_read (&tp->cur_tx) - atomic_read (&tp->dirty_tx)) >= NUM_TX_DESC)
1354 netif_stop_queue (dev);
1355
1356 DPRINTK ("%s: Queued Tx packet at %p size %u to slot %d.\n",
1357 dev->name, skb->data, skb->len, entry);
1358
1359 return 0;
1360 }
1361
1362
1363 static void netdrv_tx_interrupt (struct net_device *dev,
1364 struct netdrv_private *tp,
1365 void *ioaddr)
1366 {
1367 int cur_tx, dirty_tx, tx_left;
1368
1369 assert (dev != NULL);
1370 assert (tp != NULL);
1371 assert (ioaddr != NULL);
1372
1373 dirty_tx = atomic_read (&tp->dirty_tx);
1374
1375 cur_tx = atomic_read (&tp->cur_tx);
1376 tx_left = cur_tx - dirty_tx;
1377 while (tx_left > 0) {
1378 int entry = dirty_tx % NUM_TX_DESC;
1379 int txstatus;
1380
1381 txstatus = NETDRV_R32 (TxStatus0 + (entry * sizeof (u32)));
1382
1383 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1384 break; /* It still hasn't been Txed */
1385
1386 /* Note: TxCarrierLost is always asserted at 100mbps. */
1387 if (txstatus & (TxOutOfWindow | TxAborted)) {
1388 /* There was an major error, log it. */
1389 DPRINTK ("%s: Transmit error, Tx status %8.8x.\n",
1390 dev->name, txstatus);
1391 dev->stats.tx_errors++;
1392 if (txstatus & TxAborted) {
1393 dev->stats.tx_aborted_errors++;
1394 NETDRV_W32 (TxConfig, TxClearAbt | (TX_DMA_BURST << TxDMAShift));
1395 }
1396 if (txstatus & TxCarrierLost)
1397 dev->stats.tx_carrier_errors++;
1398 if (txstatus & TxOutOfWindow)
1399 dev->stats.tx_window_errors++;
1400 } else {
1401 if (txstatus & TxUnderrun) {
1402 /* Add 64 to the Tx FIFO threshold. */
1403 if (tp->tx_flag < 0x00300000)
1404 tp->tx_flag += 0x00020000;
1405 dev->stats.tx_fifo_errors++;
1406 }
1407 dev->stats.collisions += (txstatus >> 24) & 15;
1408 dev->stats.tx_bytes += txstatus & 0x7ff;
1409 dev->stats.tx_packets++;
1410 }
1411
1412 /* Free the original skb. */
1413 if (tp->tx_info[entry].mapping != 0) {
1414 pci_unmap_single(tp->pci_dev,
1415 tp->tx_info[entry].mapping,
1416 tp->tx_info[entry].skb->len,
1417 PCI_DMA_TODEVICE);
1418 tp->tx_info[entry].mapping = 0;
1419 }
1420 dev_kfree_skb_irq (tp->tx_info[entry].skb);
1421 tp->tx_info[entry].skb = NULL;
1422 dirty_tx++;
1423 if (dirty_tx < 0) { /* handle signed int overflow */
1424 atomic_sub (cur_tx, &tp->cur_tx); /* XXX racy? */
1425 dirty_tx = cur_tx - tx_left + 1;
1426 }
1427 if (netif_queue_stopped (dev))
1428 netif_wake_queue (dev);
1429
1430 cur_tx = atomic_read (&tp->cur_tx);
1431 tx_left = cur_tx - dirty_tx;
1432
1433 }
1434
1435 #ifndef NETDRV_NDEBUG
1436 if (atomic_read (&tp->cur_tx) - dirty_tx > NUM_TX_DESC) {
1437 printk (KERN_ERR
1438 "%s: Out-of-sync dirty pointer, %d vs. %d.\n",
1439 dev->name, dirty_tx, atomic_read (&tp->cur_tx));
1440 dirty_tx += NUM_TX_DESC;
1441 }
1442 #endif /* NETDRV_NDEBUG */
1443
1444 atomic_set (&tp->dirty_tx, dirty_tx);
1445 }
1446
1447
1448 /* TODO: clean this up! Rx reset need not be this intensive */
1449 static void netdrv_rx_err (u32 rx_status, struct net_device *dev,
1450 struct netdrv_private *tp, void *ioaddr)
1451 {
1452 u8 tmp8;
1453 int tmp_work = 1000;
1454
1455 DPRINTK ("%s: Ethernet frame had errors, status %8.8x.\n",
1456 dev->name, rx_status);
1457 if (rx_status & RxTooLong) {
1458 DPRINTK ("%s: Oversized Ethernet frame, status %4.4x!\n",
1459 dev->name, rx_status);
1460 /* A.C.: The chip hangs here. */
1461 }
1462 dev->stats.rx_errors++;
1463 if (rx_status & (RxBadSymbol | RxBadAlign))
1464 dev->stats.rx_frame_errors++;
1465 if (rx_status & (RxRunt | RxTooLong))
1466 dev->stats.rx_length_errors++;
1467 if (rx_status & RxCRCErr)
1468 dev->stats.rx_crc_errors++;
1469 /* Reset the receiver, based on RealTek recommendation. (Bug?) */
1470 tp->cur_rx = 0;
1471
1472 /* disable receive */
1473 tmp8 = NETDRV_R8 (ChipCmd) & ChipCmdClear;
1474 NETDRV_W8_F (ChipCmd, tmp8 | CmdTxEnb);
1475
1476 /* A.C.: Reset the multicast list. */
1477 netdrv_set_rx_mode (dev);
1478
1479 /* XXX potentially temporary hack to
1480 * restart hung receiver */
1481 while (--tmp_work > 0) {
1482 tmp8 = NETDRV_R8 (ChipCmd);
1483 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1484 break;
1485 NETDRV_W8_F (ChipCmd,
1486 (tmp8 & ChipCmdClear) | CmdRxEnb | CmdTxEnb);
1487 }
1488
1489 /* G.S.: Re-enable receiver */
1490 /* XXX temporary hack to work around receiver hang */
1491 netdrv_set_rx_mode (dev);
1492
1493 if (tmp_work <= 0)
1494 printk (KERN_WARNING PFX "tx/rx enable wait too long\n");
1495 }
1496
1497
1498 /* The data sheet doesn't describe the Rx ring at all, so I'm guessing at the
1499 field alignments and semantics. */
1500 static void netdrv_rx_interrupt (struct net_device *dev,
1501 struct netdrv_private *tp, void *ioaddr)
1502 {
1503 unsigned char *rx_ring;
1504 u16 cur_rx;
1505
1506 assert (dev != NULL);
1507 assert (tp != NULL);
1508 assert (ioaddr != NULL);
1509
1510 rx_ring = tp->rx_ring;
1511 cur_rx = tp->cur_rx;
1512
1513 DPRINTK ("%s: In netdrv_rx(), current %4.4x BufAddr %4.4x,"
1514 " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx,
1515 NETDRV_R16 (RxBufAddr),
1516 NETDRV_R16 (RxBufPtr), NETDRV_R8 (ChipCmd));
1517
1518 while ((NETDRV_R8 (ChipCmd) & RxBufEmpty) == 0) {
1519 int ring_offset = cur_rx % RX_BUF_LEN;
1520 u32 rx_status;
1521 unsigned int rx_size;
1522 unsigned int pkt_size;
1523 struct sk_buff *skb;
1524
1525 /* read size+status of next frame from DMA ring buffer */
1526 rx_status = le32_to_cpu (*(u32 *) (rx_ring + ring_offset));
1527 rx_size = rx_status >> 16;
1528 pkt_size = rx_size - 4;
1529
1530 DPRINTK ("%s: netdrv_rx() status %4.4x, size %4.4x,"
1531 " cur %4.4x.\n", dev->name, rx_status,
1532 rx_size, cur_rx);
1533 #if defined(NETDRV_DEBUG) && (NETDRV_DEBUG > 2)
1534 {
1535 int i;
1536 DPRINTK ("%s: Frame contents ", dev->name);
1537 for (i = 0; i < 70; i++)
1538 printk (" %2.2x",
1539 rx_ring[ring_offset + i]);
1540 printk (".\n");
1541 }
1542 #endif
1543
1544 /* If Rx err or invalid rx_size/rx_status received
1545 * (which happens if we get lost in the ring),
1546 * Rx process gets reset, so we abort any further
1547 * Rx processing.
1548 */
1549 if ((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
1550 (!(rx_status & RxStatusOK))) {
1551 netdrv_rx_err (rx_status, dev, tp, ioaddr);
1552 return;
1553 }
1554
1555 /* Malloc up new buffer, compatible with net-2e. */
1556 /* Omit the four octet CRC from the length. */
1557
1558 /* TODO: consider allocating skb's outside of
1559 * interrupt context, both to speed interrupt processing,
1560 * and also to reduce the chances of having to
1561 * drop packets here under memory pressure.
1562 */
1563
1564 skb = dev_alloc_skb (pkt_size + 2);
1565 if (skb) {
1566 skb_reserve (skb, 2); /* 16 byte align the IP fields. */
1567
1568 skb_copy_to_linear_data (skb, &rx_ring[ring_offset + 4], pkt_size);
1569 skb_put (skb, pkt_size);
1570
1571 skb->protocol = eth_type_trans (skb, dev);
1572 netif_rx (skb);
1573 dev->stats.rx_bytes += pkt_size;
1574 dev->stats.rx_packets++;
1575 } else {
1576 printk (KERN_WARNING
1577 "%s: Memory squeeze, dropping packet.\n",
1578 dev->name);
1579 dev->stats.rx_dropped++;
1580 }
1581
1582 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
1583 NETDRV_W16_F (RxBufPtr, cur_rx - 16);
1584 }
1585
1586 DPRINTK ("%s: Done netdrv_rx(), current %4.4x BufAddr %4.4x,"
1587 " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx,
1588 NETDRV_R16 (RxBufAddr),
1589 NETDRV_R16 (RxBufPtr), NETDRV_R8 (ChipCmd));
1590
1591 tp->cur_rx = cur_rx;
1592 }
1593
1594
1595 static void netdrv_weird_interrupt (struct net_device *dev,
1596 struct netdrv_private *tp,
1597 void *ioaddr,
1598 int status, int link_changed)
1599 {
1600 printk (KERN_DEBUG "%s: Abnormal interrupt, status %8.8x.\n",
1601 dev->name, status);
1602
1603 assert (dev != NULL);
1604 assert (tp != NULL);
1605 assert (ioaddr != NULL);
1606
1607 /* Update the error count. */
1608 dev->stats.rx_missed_errors += NETDRV_R32 (RxMissed);
1609 NETDRV_W32 (RxMissed, 0);
1610
1611 if ((status & RxUnderrun) && link_changed &&
1612 (tp->drv_flags & HAS_LNK_CHNG)) {
1613 /* Really link-change on new chips. */
1614 int lpar = NETDRV_R16 (NWayLPAR);
1615 int duplex = (lpar & 0x0100) || (lpar & 0x01C0) == 0x0040
1616 || tp->duplex_lock;
1617 if (tp->full_duplex != duplex) {
1618 tp->full_duplex = duplex;
1619 NETDRV_W8 (Cfg9346, Cfg9346_Unlock);
1620 NETDRV_W8 (Config1, tp->full_duplex ? 0x60 : 0x20);
1621 NETDRV_W8 (Cfg9346, Cfg9346_Lock);
1622 }
1623 status &= ~RxUnderrun;
1624 }
1625
1626 /* XXX along with netdrv_rx_err, are we double-counting errors? */
1627 if (status &
1628 (RxUnderrun | RxOverflow | RxErr | RxFIFOOver))
1629 dev->stats.rx_errors++;
1630
1631 if (status & (PCSTimeout))
1632 dev->stats.rx_length_errors++;
1633 if (status & (RxUnderrun | RxFIFOOver))
1634 dev->stats.rx_fifo_errors++;
1635 if (status & RxOverflow) {
1636 dev->stats.rx_over_errors++;
1637 tp->cur_rx = NETDRV_R16 (RxBufAddr) % RX_BUF_LEN;
1638 NETDRV_W16_F (RxBufPtr, tp->cur_rx - 16);
1639 }
1640 if (status & PCIErr) {
1641 u16 pci_cmd_status;
1642 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status);
1643
1644 printk (KERN_ERR "%s: PCI Bus error %4.4x.\n",
1645 dev->name, pci_cmd_status);
1646 }
1647 }
1648
1649
1650 /* The interrupt handler does all of the Rx thread work and cleans up
1651 after the Tx thread. */
1652 static irqreturn_t netdrv_interrupt (int irq, void *dev_instance)
1653 {
1654 struct net_device *dev = (struct net_device *) dev_instance;
1655 struct netdrv_private *tp = netdev_priv(dev);
1656 int boguscnt = max_interrupt_work;
1657 void *ioaddr = tp->mmio_addr;
1658 int status = 0, link_changed = 0; /* avoid bogus "uninit" warning */
1659 int handled = 0;
1660
1661 spin_lock (&tp->lock);
1662
1663 do {
1664 status = NETDRV_R16 (IntrStatus);
1665
1666 /* h/w no longer present (hotplug?) or major error, bail */
1667 if (status == 0xFFFF)
1668 break;
1669
1670 handled = 1;
1671 /* Acknowledge all of the current interrupt sources ASAP */
1672 NETDRV_W16_F (IntrStatus, status);
1673
1674 DPRINTK ("%s: interrupt status=%#4.4x new intstat=%#4.4x.\n",
1675 dev->name, status,
1676 NETDRV_R16 (IntrStatus));
1677
1678 if ((status &
1679 (PCIErr | PCSTimeout | RxUnderrun | RxOverflow |
1680 RxFIFOOver | TxErr | TxOK | RxErr | RxOK)) == 0)
1681 break;
1682
1683 /* Check uncommon events with one test. */
1684 if (status & (PCIErr | PCSTimeout | RxUnderrun | RxOverflow |
1685 RxFIFOOver | TxErr | RxErr))
1686 netdrv_weird_interrupt (dev, tp, ioaddr,
1687 status, link_changed);
1688
1689 if (status & (RxOK | RxUnderrun | RxOverflow | RxFIFOOver)) /* Rx interrupt */
1690 netdrv_rx_interrupt (dev, tp, ioaddr);
1691
1692 if (status & (TxOK | TxErr))
1693 netdrv_tx_interrupt (dev, tp, ioaddr);
1694
1695 boguscnt--;
1696 } while (boguscnt > 0);
1697
1698 if (boguscnt <= 0) {
1699 printk (KERN_WARNING
1700 "%s: Too much work at interrupt, "
1701 "IntrStatus=0x%4.4x.\n", dev->name,
1702 status);
1703
1704 /* Clear all interrupt sources. */
1705 NETDRV_W16 (IntrStatus, 0xffff);
1706 }
1707
1708 spin_unlock (&tp->lock);
1709
1710 DPRINTK ("%s: exiting interrupt, intr_status=%#4.4x.\n",
1711 dev->name, NETDRV_R16 (IntrStatus));
1712 return IRQ_RETVAL(handled);
1713 }
1714
1715
1716 static int netdrv_close (struct net_device *dev)
1717 {
1718 struct netdrv_private *tp = netdev_priv(dev);
1719 void *ioaddr = tp->mmio_addr;
1720 unsigned long flags;
1721
1722 DPRINTK ("ENTER\n");
1723
1724 netif_stop_queue (dev);
1725
1726 DPRINTK ("%s: Shutting down ethercard, status was 0x%4.4x.\n",
1727 dev->name, NETDRV_R16 (IntrStatus));
1728
1729 del_timer_sync (&tp->timer);
1730
1731 spin_lock_irqsave (&tp->lock, flags);
1732
1733 /* Stop the chip's Tx and Rx DMA processes. */
1734 NETDRV_W8 (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear));
1735
1736 /* Disable interrupts by clearing the interrupt mask. */
1737 NETDRV_W16 (IntrMask, 0x0000);
1738
1739 /* Update the error counts. */
1740 dev->stats.rx_missed_errors += NETDRV_R32 (RxMissed);
1741 NETDRV_W32 (RxMissed, 0);
1742
1743 spin_unlock_irqrestore (&tp->lock, flags);
1744
1745 free_irq (dev->irq, dev);
1746
1747 netdrv_tx_clear (dev);
1748
1749 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1750 tp->rx_ring, tp->rx_ring_dma);
1751 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1752 tp->tx_bufs, tp->tx_bufs_dma);
1753 tp->rx_ring = NULL;
1754 tp->tx_bufs = NULL;
1755
1756 /* Green! Put the chip in low-power mode. */
1757 NETDRV_W8 (Cfg9346, Cfg9346_Unlock);
1758 NETDRV_W8 (Config1, 0x03);
1759 NETDRV_W8 (Cfg9346, Cfg9346_Lock);
1760
1761 DPRINTK ("EXIT\n");
1762 return 0;
1763 }
1764
1765
1766 static int netdrv_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
1767 {
1768 struct netdrv_private *tp = netdev_priv(dev);
1769 struct mii_ioctl_data *data = if_mii(rq);
1770 unsigned long flags;
1771 int rc = 0;
1772
1773 DPRINTK ("ENTER\n");
1774
1775 switch (cmd) {
1776 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
1777 data->phy_id = tp->phys[0] & 0x3f;
1778 /* Fall Through */
1779
1780 case SIOCGMIIREG: /* Read MII PHY register. */
1781 spin_lock_irqsave (&tp->lock, flags);
1782 data->val_out = mdio_read (dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
1783 spin_unlock_irqrestore (&tp->lock, flags);
1784 break;
1785
1786 case SIOCSMIIREG: /* Write MII PHY register. */
1787 if (!capable (CAP_NET_ADMIN)) {
1788 rc = -EPERM;
1789 break;
1790 }
1791
1792 spin_lock_irqsave (&tp->lock, flags);
1793 mdio_write (dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
1794 spin_unlock_irqrestore (&tp->lock, flags);
1795 break;
1796
1797 default:
1798 rc = -EOPNOTSUPP;
1799 break;
1800 }
1801
1802 DPRINTK ("EXIT, returning %d\n", rc);
1803 return rc;
1804 }
1805
1806 /* Set or clear the multicast filter for this adaptor.
1807 This routine is not state sensitive and need not be SMP locked. */
1808
1809 static void netdrv_set_rx_mode (struct net_device *dev)
1810 {
1811 struct netdrv_private *tp = netdev_priv(dev);
1812 void *ioaddr = tp->mmio_addr;
1813 u32 mc_filter[2]; /* Multicast hash filter */
1814 int i, rx_mode;
1815 u32 tmp;
1816
1817 DPRINTK ("ENTER\n");
1818
1819 DPRINTK ("%s: netdrv_set_rx_mode(%4.4x) done -- Rx config %8.8x.\n",
1820 dev->name, dev->flags, NETDRV_R32 (RxConfig));
1821
1822 /* Note: do not reorder, GCC is clever about common statements. */
1823 if (dev->flags & IFF_PROMISC) {
1824 rx_mode =
1825 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
1826 AcceptAllPhys;
1827 mc_filter[1] = mc_filter[0] = 0xffffffff;
1828 } else if ((dev->mc_count > multicast_filter_limit)
1829 || (dev->flags & IFF_ALLMULTI)) {
1830 /* Too many to filter perfectly -- accept all multicasts. */
1831 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
1832 mc_filter[1] = mc_filter[0] = 0xffffffff;
1833 } else {
1834 struct dev_mc_list *mclist;
1835 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
1836 mc_filter[1] = mc_filter[0] = 0;
1837 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
1838 i++, mclist = mclist->next) {
1839 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
1840
1841 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
1842 }
1843 }
1844
1845 /* if called from irq handler, lock already acquired */
1846 if (!in_irq ())
1847 spin_lock_irq (&tp->lock);
1848
1849 /* We can safely update without stopping the chip. */
1850 tmp = netdrv_rx_config | rx_mode |
1851 (NETDRV_R32 (RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
1852 NETDRV_W32_F (RxConfig, tmp);
1853 NETDRV_W32_F (MAR0 + 0, mc_filter[0]);
1854 NETDRV_W32_F (MAR0 + 4, mc_filter[1]);
1855
1856 if (!in_irq ())
1857 spin_unlock_irq (&tp->lock);
1858
1859 DPRINTK ("EXIT\n");
1860 }
1861
1862
1863 #ifdef CONFIG_PM
1864
1865 static int netdrv_suspend (struct pci_dev *pdev, pm_message_t state)
1866 {
1867 struct net_device *dev = pci_get_drvdata (pdev);
1868 struct netdrv_private *tp = netdev_priv(dev);
1869 void *ioaddr = tp->mmio_addr;
1870 unsigned long flags;
1871
1872 if (!netif_running(dev))
1873 return 0;
1874 netif_device_detach (dev);
1875
1876 spin_lock_irqsave (&tp->lock, flags);
1877
1878 /* Disable interrupts, stop Tx and Rx. */
1879 NETDRV_W16 (IntrMask, 0x0000);
1880 NETDRV_W8 (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear));
1881
1882 /* Update the error counts. */
1883 dev->stats.rx_missed_errors += NETDRV_R32 (RxMissed);
1884 NETDRV_W32 (RxMissed, 0);
1885
1886 spin_unlock_irqrestore (&tp->lock, flags);
1887
1888 pci_save_state (pdev);
1889 pci_set_power_state (pdev, PCI_D3hot);
1890
1891 return 0;
1892 }
1893
1894
1895 static int netdrv_resume (struct pci_dev *pdev)
1896 {
1897 struct net_device *dev = pci_get_drvdata (pdev);
1898 /*struct netdrv_private *tp = netdev_priv(dev);*/
1899
1900 if (!netif_running(dev))
1901 return 0;
1902 pci_set_power_state (pdev, PCI_D0);
1903 pci_restore_state (pdev);
1904 netif_device_attach (dev);
1905 netdrv_hw_start (dev);
1906
1907 return 0;
1908 }
1909
1910 #endif /* CONFIG_PM */
1911
1912
1913 static struct pci_driver netdrv_pci_driver = {
1914 .name = MODNAME,
1915 .id_table = netdrv_pci_tbl,
1916 .probe = netdrv_init_one,
1917 .remove = __devexit_p(netdrv_remove_one),
1918 #ifdef CONFIG_PM
1919 .suspend = netdrv_suspend,
1920 .resume = netdrv_resume,
1921 #endif /* CONFIG_PM */
1922 };
1923
1924
1925 static int __init netdrv_init_module (void)
1926 {
1927 /* when a module, this is printed whether or not devices are found in probe */
1928 #ifdef MODULE
1929 printk(version);
1930 #endif
1931 return pci_register_driver(&netdrv_pci_driver);
1932 }
1933
1934
1935 static void __exit netdrv_cleanup_module (void)
1936 {
1937 pci_unregister_driver (&netdrv_pci_driver);
1938 }
1939
1940
1941 module_init(netdrv_init_module);
1942 module_exit(netdrv_cleanup_module);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree