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fs/adfs: return f_fsid for statfs(2)
[linux-2.6/mini2440.git] / drivers / net / pci-skeleton.c
blobc95fd72c3bb96886a9862d27533ef20d650e32be
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 KERN_INFO " 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
732 static int __devinit netdrv_init_one (struct pci_dev *pdev,
733 const struct pci_device_id *ent)
734 {
735 struct net_device *dev = NULL;
736 struct netdrv_private *tp;
737 int i, addr_len, option;
738 void *ioaddr = NULL;
739 static int board_idx = -1;
740
741 /* when built into the kernel, we only print version if device is found */
742 #ifndef MODULE
743 static int printed_version;
744 if (!printed_version++)
745 printk(version);
746 #endif
747
748 DPRINTK ("ENTER\n");
749
750 assert (pdev != NULL);
751 assert (ent != NULL);
752
753 board_idx++;
754
755 i = netdrv_init_board (pdev, &dev, &ioaddr);
756 if (i < 0) {
757 DPRINTK ("EXIT, returning %d\n", i);
758 return i;
759 }
760
761 tp = netdev_priv(dev);
762
763 assert (ioaddr != NULL);
764 assert (dev != NULL);
765 assert (tp != NULL);
766
767 addr_len = read_eeprom (ioaddr, 0, 8) == 0x8129 ? 8 : 6;
768 for (i = 0; i < 3; i++)
769 ((u16 *) (dev->dev_addr))[i] =
770 le16_to_cpu (read_eeprom (ioaddr, i + 7, addr_len));
771
772 /* The Rtl8139-specific entries in the device structure. */
773 dev->open = netdrv_open;
774 dev->hard_start_xmit = netdrv_start_xmit;
775 dev->stop = netdrv_close;
776 dev->set_multicast_list = netdrv_set_rx_mode;
777 dev->do_ioctl = netdrv_ioctl;
778 dev->tx_timeout = netdrv_tx_timeout;
779 dev->watchdog_timeo = TX_TIMEOUT;
780
781 dev->irq = pdev->irq;
782 dev->base_addr = (unsigned long) ioaddr;
783
784 /* netdev_priv()/tp zeroed and aligned in alloc_etherdev */
785 tp = netdev_priv(dev);
786
787 /* note: tp->chipset set in netdrv_init_board */
788 tp->drv_flags = PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
789 PCI_COMMAND_MASTER | NETDRV_CAPS;
790 tp->pci_dev = pdev;
791 tp->board = ent->driver_data;
792 tp->mmio_addr = ioaddr;
793 spin_lock_init(&tp->lock);
794
795 pci_set_drvdata(pdev, dev);
796
797 tp->phys[0] = 32;
798
799 printk (KERN_INFO "%s: %s at 0x%lx, %pM IRQ %d\n",
800 dev->name,
801 board_info[ent->driver_data].name,
802 dev->base_addr,
803 dev->dev_addr,
804 dev->irq);
805
806 printk (KERN_DEBUG "%s: Identified 8139 chip type '%s'\n",
807 dev->name, rtl_chip_info[tp->chipset].name);
808
809 /* Put the chip into low-power mode. */
810 NETDRV_W8_F (Cfg9346, Cfg9346_Unlock);
811
812 /* The lower four bits are the media type. */
813 option = (board_idx > 7) ? 0 : media[board_idx];
814 if (option > 0) {
815 tp->full_duplex = (option & 0x200) ? 1 : 0;
816 tp->default_port = option & 15;
817 if (tp->default_port)
818 tp->medialock = 1;
819 }
820
821 if (tp->full_duplex) {
822 printk (KERN_INFO
823 "%s: Media type forced to Full Duplex.\n",
824 dev->name);
825 mdio_write (dev, tp->phys[0], MII_ADVERTISE, ADVERTISE_FULL);
826 tp->duplex_lock = 1;
827 }
828
829 DPRINTK ("EXIT - returning 0\n");
830 return 0;
831 }
832
833
834 static void __devexit netdrv_remove_one (struct pci_dev *pdev)
835 {
836 struct net_device *dev = pci_get_drvdata (pdev);
837 struct netdrv_private *np;
838
839 DPRINTK ("ENTER\n");
840
841 assert (dev != NULL);
842
843 np = netdev_priv(dev);
844 assert (np != NULL);
845
846 unregister_netdev (dev);
847
848 #ifndef USE_IO_OPS
849 iounmap (np->mmio_addr);
850 #endif /* !USE_IO_OPS */
851
852 pci_release_regions (pdev);
853
854 free_netdev (dev);
855
856 pci_set_drvdata (pdev, NULL);
857
858 pci_disable_device (pdev);
859
860 DPRINTK ("EXIT\n");
861 }
862
863
864 /* Serial EEPROM section. */
865
866 /* EEPROM_Ctrl bits. */
867 #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
868 #define EE_CS 0x08 /* EEPROM chip select. */
869 #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
870 #define EE_WRITE_0 0x00
871 #define EE_WRITE_1 0x02
872 #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
873 #define EE_ENB (0x80 | EE_CS)
874
875 /* Delay between EEPROM clock transitions.
876 No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
877 */
878
879 #define eeprom_delay() readl(ee_addr)
880
881 /* The EEPROM commands include the alway-set leading bit. */
882 #define EE_WRITE_CMD (5)
883 #define EE_READ_CMD (6)
884 #define EE_ERASE_CMD (7)
885
886 static int __devinit read_eeprom (void *ioaddr, int location, int addr_len)
887 {
888 int i;
889 unsigned retval = 0;
890 void *ee_addr = ioaddr + Cfg9346;
891 int read_cmd = location | (EE_READ_CMD << addr_len);
892
893 DPRINTK ("ENTER\n");
894
895 writeb (EE_ENB & ~EE_CS, ee_addr);
896 writeb (EE_ENB, ee_addr);
897 eeprom_delay ();
898
899 /* Shift the read command bits out. */
900 for (i = 4 + addr_len; i >= 0; i--) {
901 int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
902 writeb (EE_ENB | dataval, ee_addr);
903 eeprom_delay ();
904 writeb (EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
905 eeprom_delay ();
906 }
907 writeb (EE_ENB, ee_addr);
908 eeprom_delay ();
909
910 for (i = 16; i > 0; i--) {
911 writeb (EE_ENB | EE_SHIFT_CLK, ee_addr);
912 eeprom_delay ();
913 retval =
914 (retval << 1) | ((readb (ee_addr) & EE_DATA_READ) ? 1 :
915 0);
916 writeb (EE_ENB, ee_addr);
917 eeprom_delay ();
918 }
919
920 /* Terminate the EEPROM access. */
921 writeb (~EE_CS, ee_addr);
922 eeprom_delay ();
923
924 DPRINTK ("EXIT - returning %d\n", retval);
925 return retval;
926 }
927
928 /* MII serial management: mostly bogus for now. */
929 /* Read and write the MII management registers using software-generated
930 serial MDIO protocol.
931 The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
932 met by back-to-back PCI I/O cycles, but we insert a delay to avoid
933 "overclocking" issues. */
934 #define MDIO_DIR 0x80
935 #define MDIO_DATA_OUT 0x04
936 #define MDIO_DATA_IN 0x02
937 #define MDIO_CLK 0x01
938 #define MDIO_WRITE0 (MDIO_DIR)
939 #define MDIO_WRITE1 (MDIO_DIR | MDIO_DATA_OUT)
940
941 #define mdio_delay() readb(mdio_addr)
942
943
944 static char mii_2_8139_map[8] = {
945 BasicModeCtrl,
946 BasicModeStatus,
947 0,
948 0,
949 NWayAdvert,
950 NWayLPAR,
951 NWayExpansion,
952 0
953 };
954
955
956 /* Syncronize the MII management interface by shifting 32 one bits out. */
957 static void mdio_sync (void *mdio_addr)
958 {
959 int i;
960
961 DPRINTK ("ENTER\n");
962
963 for (i = 32; i >= 0; i--) {
964 writeb (MDIO_WRITE1, mdio_addr);
965 mdio_delay ();
966 writeb (MDIO_WRITE1 | MDIO_CLK, mdio_addr);
967 mdio_delay ();
968 }
969
970 DPRINTK ("EXIT\n");
971 }
972
973
974 static int mdio_read (struct net_device *dev, int phy_id, int location)
975 {
976 struct netdrv_private *tp = netdev_priv(dev);
977 void *mdio_addr = tp->mmio_addr + Config4;
978 int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location;
979 int retval = 0;
980 int i;
981
982 DPRINTK ("ENTER\n");
983
984 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
985 DPRINTK ("EXIT after directly using 8139 internal regs\n");
986 return location < 8 && mii_2_8139_map[location] ?
987 readw (tp->mmio_addr + mii_2_8139_map[location]) : 0;
988 }
989 mdio_sync (mdio_addr);
990 /* Shift the read command bits out. */
991 for (i = 15; i >= 0; i--) {
992 int dataval = (mii_cmd & (1 << i)) ? MDIO_DATA_OUT : 0;
993
994 writeb (MDIO_DIR | dataval, mdio_addr);
995 mdio_delay ();
996 writeb (MDIO_DIR | dataval | MDIO_CLK, mdio_addr);
997 mdio_delay ();
998 }
999
1000 /* Read the two transition, 16 data, and wire-idle bits. */
1001 for (i = 19; i > 0; i--) {
1002 writeb (0, mdio_addr);
1003 mdio_delay ();
1004 retval =
1005 (retval << 1) | ((readb (mdio_addr) & MDIO_DATA_IN) ? 1
1006 : 0);
1007 writeb (MDIO_CLK, mdio_addr);
1008 mdio_delay ();
1009 }
1010
1011 DPRINTK ("EXIT, returning %d\n", (retval >> 1) & 0xffff);
1012 return (retval >> 1) & 0xffff;
1013 }
1014
1015
1016 static void mdio_write (struct net_device *dev, int phy_id, int location,
1017 int value)
1018 {
1019 struct netdrv_private *tp = netdev_priv(dev);
1020 void *mdio_addr = tp->mmio_addr + Config4;
1021 int mii_cmd =
1022 (0x5002 << 16) | (phy_id << 23) | (location << 18) | value;
1023 int i;
1024
1025 DPRINTK ("ENTER\n");
1026
1027 if (phy_id > 31) { /* Really a 8139. Use internal registers. */
1028 if (location < 8 && mii_2_8139_map[location]) {
1029 writew (value,
1030 tp->mmio_addr + mii_2_8139_map[location]);
1031 readw (tp->mmio_addr + mii_2_8139_map[location]);
1032 }
1033 DPRINTK ("EXIT after directly using 8139 internal regs\n");
1034 return;
1035 }
1036 mdio_sync (mdio_addr);
1037
1038 /* Shift the command bits out. */
1039 for (i = 31; i >= 0; i--) {
1040 int dataval =
1041 (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0;
1042 writeb (dataval, mdio_addr);
1043 mdio_delay ();
1044 writeb (dataval | MDIO_CLK, mdio_addr);
1045 mdio_delay ();
1046 }
1047
1048 /* Clear out extra bits. */
1049 for (i = 2; i > 0; i--) {
1050 writeb (0, mdio_addr);
1051 mdio_delay ();
1052 writeb (MDIO_CLK, mdio_addr);
1053 mdio_delay ();
1054 }
1055
1056 DPRINTK ("EXIT\n");
1057 }
1058
1059
1060 static int netdrv_open (struct net_device *dev)
1061 {
1062 struct netdrv_private *tp = netdev_priv(dev);
1063 int retval;
1064 #ifdef NETDRV_DEBUG
1065 void *ioaddr = tp->mmio_addr;
1066 #endif
1067
1068 DPRINTK ("ENTER\n");
1069
1070 retval = request_irq (dev->irq, netdrv_interrupt, IRQF_SHARED, dev->name, dev);
1071 if (retval) {
1072 DPRINTK ("EXIT, returning %d\n", retval);
1073 return retval;
1074 }
1075
1076 tp->tx_bufs = pci_alloc_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1077 &tp->tx_bufs_dma);
1078 tp->rx_ring = pci_alloc_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1079 &tp->rx_ring_dma);
1080 if (tp->tx_bufs == NULL || tp->rx_ring == NULL) {
1081 free_irq(dev->irq, dev);
1082
1083 if (tp->tx_bufs)
1084 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1085 tp->tx_bufs, tp->tx_bufs_dma);
1086 if (tp->rx_ring)
1087 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1088 tp->rx_ring, tp->rx_ring_dma);
1089
1090 DPRINTK ("EXIT, returning -ENOMEM\n");
1091 return -ENOMEM;
1092
1093 }
1094
1095 tp->full_duplex = tp->duplex_lock;
1096 tp->tx_flag = (TX_FIFO_THRESH << 11) & 0x003f0000;
1097
1098 netdrv_init_ring (dev);
1099 netdrv_hw_start (dev);
1100
1101 DPRINTK ("%s: netdrv_open() ioaddr %#lx IRQ %d"
1102 " GP Pins %2.2x %s-duplex.\n",
1103 dev->name, pci_resource_start (tp->pci_dev, 1),
1104 dev->irq, NETDRV_R8 (MediaStatus),
1105 tp->full_duplex ? "full" : "half");
1106
1107 /* Set the timer to switch to check for link beat and perhaps switch
1108 to an alternate media type. */
1109 init_timer (&tp->timer);
1110 tp->timer.expires = jiffies + 3 * HZ;
1111 tp->timer.data = (unsigned long) dev;
1112 tp->timer.function = &netdrv_timer;
1113 add_timer (&tp->timer);
1114
1115 DPRINTK ("EXIT, returning 0\n");
1116 return 0;
1117 }
1118
1119
1120 /* Start the hardware at open or resume. */
1121 static void netdrv_hw_start (struct net_device *dev)
1122 {
1123 struct netdrv_private *tp = netdev_priv(dev);
1124 void *ioaddr = tp->mmio_addr;
1125 u32 i;
1126
1127 DPRINTK ("ENTER\n");
1128
1129 /* Soft reset the chip. */
1130 NETDRV_W8 (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear) | CmdReset);
1131 udelay (100);
1132
1133 /* Check that the chip has finished the reset. */
1134 for (i = 1000; i > 0; i--)
1135 if ((NETDRV_R8 (ChipCmd) & CmdReset) == 0)
1136 break;
1137
1138 /* Restore our idea of the MAC address. */
1139 NETDRV_W32_F (MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0)));
1140 NETDRV_W32_F (MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4)));
1141
1142 /* Must enable Tx/Rx before setting transfer thresholds! */
1143 NETDRV_W8_F (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear) |
1144 CmdRxEnb | CmdTxEnb);
1145
1146 i = netdrv_rx_config |
1147 (NETDRV_R32 (RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
1148 NETDRV_W32_F (RxConfig, i);
1149
1150 /* Check this value: the documentation for IFG contradicts ifself. */
1151 NETDRV_W32 (TxConfig, (TX_DMA_BURST << TxDMAShift));
1152
1153 /* unlock Config[01234] and BMCR register writes */
1154 NETDRV_W8_F (Cfg9346, Cfg9346_Unlock);
1155 udelay (10);
1156
1157 tp->cur_rx = 0;
1158
1159 /* Lock Config[01234] and BMCR register writes */
1160 NETDRV_W8_F (Cfg9346, Cfg9346_Lock);
1161 udelay (10);
1162
1163 /* init Rx ring buffer DMA address */
1164 NETDRV_W32_F (RxBuf, tp->rx_ring_dma);
1165
1166 /* init Tx buffer DMA addresses */
1167 for (i = 0; i < NUM_TX_DESC; i++)
1168 NETDRV_W32_F (TxAddr0 + (i * 4), tp->tx_bufs_dma + (tp->tx_buf[i] - tp->tx_bufs));
1169
1170 NETDRV_W32_F (RxMissed, 0);
1171
1172 netdrv_set_rx_mode (dev);
1173
1174 /* no early-rx interrupts */
1175 NETDRV_W16 (MultiIntr, NETDRV_R16 (MultiIntr) & MultiIntrClear);
1176
1177 /* make sure RxTx has started */
1178 NETDRV_W8_F (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear) |
1179 CmdRxEnb | CmdTxEnb);
1180
1181 /* Enable all known interrupts by setting the interrupt mask. */
1182 NETDRV_W16_F (IntrMask, netdrv_intr_mask);
1183
1184 netif_start_queue (dev);
1185
1186 DPRINTK ("EXIT\n");
1187 }
1188
1189
1190 /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
1191 static void netdrv_init_ring (struct net_device *dev)
1192 {
1193 struct netdrv_private *tp = netdev_priv(dev);
1194 int i;
1195
1196 DPRINTK ("ENTER\n");
1197
1198 tp->cur_rx = 0;
1199 atomic_set (&tp->cur_tx, 0);
1200 atomic_set (&tp->dirty_tx, 0);
1201
1202 for (i = 0; i < NUM_TX_DESC; i++) {
1203 tp->tx_info[i].skb = NULL;
1204 tp->tx_info[i].mapping = 0;
1205 tp->tx_buf[i] = &tp->tx_bufs[i * TX_BUF_SIZE];
1206 }
1207
1208 DPRINTK ("EXIT\n");
1209 }
1210
1211
1212 static void netdrv_timer (unsigned long data)
1213 {
1214 struct net_device *dev = (struct net_device *) data;
1215 struct netdrv_private *tp = netdev_priv(dev);
1216 void *ioaddr = tp->mmio_addr;
1217 int next_tick = 60 * HZ;
1218 int mii_lpa;
1219
1220 mii_lpa = mdio_read (dev, tp->phys[0], MII_LPA);
1221
1222 if (!tp->duplex_lock && mii_lpa != 0xffff) {
1223 int duplex = (mii_lpa & LPA_100FULL)
1224 || (mii_lpa & 0x01C0) == 0x0040;
1225 if (tp->full_duplex != duplex) {
1226 tp->full_duplex = duplex;
1227 printk (KERN_INFO
1228 "%s: Setting %s-duplex based on MII #%d link"
1229 " partner ability of %4.4x.\n", dev->name,
1230 tp->full_duplex ? "full" : "half",
1231 tp->phys[0], mii_lpa);
1232 NETDRV_W8 (Cfg9346, Cfg9346_Unlock);
1233 NETDRV_W8 (Config1, tp->full_duplex ? 0x60 : 0x20);
1234 NETDRV_W8 (Cfg9346, Cfg9346_Lock);
1235 }
1236 }
1237
1238 DPRINTK ("%s: Media selection tick, Link partner %4.4x.\n",
1239 dev->name, NETDRV_R16 (NWayLPAR));
1240 DPRINTK ("%s: Other registers are IntMask %4.4x IntStatus %4.4x"
1241 " RxStatus %4.4x.\n", dev->name,
1242 NETDRV_R16 (IntrMask),
1243 NETDRV_R16 (IntrStatus),
1244 NETDRV_R32 (RxEarlyStatus));
1245 DPRINTK ("%s: Chip config %2.2x %2.2x.\n",
1246 dev->name, NETDRV_R8 (Config0),
1247 NETDRV_R8 (Config1));
1248
1249 tp->timer.expires = jiffies + next_tick;
1250 add_timer (&tp->timer);
1251 }
1252
1253
1254 static void netdrv_tx_clear (struct net_device *dev)
1255 {
1256 int i;
1257 struct netdrv_private *tp = netdev_priv(dev);
1258
1259 atomic_set (&tp->cur_tx, 0);
1260 atomic_set (&tp->dirty_tx, 0);
1261
1262 /* Dump the unsent Tx packets. */
1263 for (i = 0; i < NUM_TX_DESC; i++) {
1264 struct ring_info *rp = &tp->tx_info[i];
1265 if (rp->mapping != 0) {
1266 pci_unmap_single (tp->pci_dev, rp->mapping,
1267 rp->skb->len, PCI_DMA_TODEVICE);
1268 rp->mapping = 0;
1269 }
1270 if (rp->skb) {
1271 dev_kfree_skb (rp->skb);
1272 rp->skb = NULL;
1273 dev->stats.tx_dropped++;
1274 }
1275 }
1276 }
1277
1278
1279 static void netdrv_tx_timeout (struct net_device *dev)
1280 {
1281 struct netdrv_private *tp = netdev_priv(dev);
1282 void *ioaddr = tp->mmio_addr;
1283 int i;
1284 u8 tmp8;
1285 unsigned long flags;
1286
1287 DPRINTK ("%s: Transmit timeout, status %2.2x %4.4x "
1288 "media %2.2x.\n", dev->name,
1289 NETDRV_R8 (ChipCmd),
1290 NETDRV_R16 (IntrStatus),
1291 NETDRV_R8 (MediaStatus));
1292
1293 /* disable Tx ASAP, if not already */
1294 tmp8 = NETDRV_R8 (ChipCmd);
1295 if (tmp8 & CmdTxEnb)
1296 NETDRV_W8 (ChipCmd, tmp8 & ~CmdTxEnb);
1297
1298 /* Disable interrupts by clearing the interrupt mask. */
1299 NETDRV_W16 (IntrMask, 0x0000);
1300
1301 /* Emit info to figure out what went wrong. */
1302 printk (KERN_DEBUG "%s: Tx queue start entry %d dirty entry %d.\n",
1303 dev->name, atomic_read (&tp->cur_tx),
1304 atomic_read (&tp->dirty_tx));
1305 for (i = 0; i < NUM_TX_DESC; i++)
1306 printk (KERN_DEBUG "%s: Tx descriptor %d is %8.8lx.%s\n",
1307 dev->name, i, NETDRV_R32 (TxStatus0 + (i * 4)),
1308 i == atomic_read (&tp->dirty_tx) % NUM_TX_DESC ?
1309 " (queue head)" : "");
1310
1311 /* Stop a shared interrupt from scavenging while we are. */
1312 spin_lock_irqsave (&tp->lock, flags);
1313
1314 netdrv_tx_clear (dev);
1315
1316 spin_unlock_irqrestore (&tp->lock, flags);
1317
1318 /* ...and finally, reset everything */
1319 netdrv_hw_start (dev);
1320
1321 netif_wake_queue (dev);
1322 }
1323
1324
1325
1326 static int netdrv_start_xmit (struct sk_buff *skb, struct net_device *dev)
1327 {
1328 struct netdrv_private *tp = netdev_priv(dev);
1329 void *ioaddr = tp->mmio_addr;
1330 int entry;
1331
1332 /* Calculate the next Tx descriptor entry. */
1333 entry = atomic_read (&tp->cur_tx) % NUM_TX_DESC;
1334
1335 assert (tp->tx_info[entry].skb == NULL);
1336 assert (tp->tx_info[entry].mapping == 0);
1337
1338 tp->tx_info[entry].skb = skb;
1339 /* tp->tx_info[entry].mapping = 0; */
1340 skb_copy_from_linear_data(skb, tp->tx_buf[entry], skb->len);
1341
1342 /* Note: the chip doesn't have auto-pad! */
1343 NETDRV_W32 (TxStatus0 + (entry * sizeof(u32)),
1344 tp->tx_flag | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN));
1345
1346 dev->trans_start = jiffies;
1347 atomic_inc (&tp->cur_tx);
1348 if ((atomic_read (&tp->cur_tx) - atomic_read (&tp->dirty_tx)) >= NUM_TX_DESC)
1349 netif_stop_queue (dev);
1350
1351 DPRINTK ("%s: Queued Tx packet at %p size %u to slot %d.\n",
1352 dev->name, skb->data, skb->len, entry);
1353
1354 return 0;
1355 }
1356
1357
1358 static void netdrv_tx_interrupt (struct net_device *dev,
1359 struct netdrv_private *tp,
1360 void *ioaddr)
1361 {
1362 int cur_tx, dirty_tx, tx_left;
1363
1364 assert (dev != NULL);
1365 assert (tp != NULL);
1366 assert (ioaddr != NULL);
1367
1368 dirty_tx = atomic_read (&tp->dirty_tx);
1369
1370 cur_tx = atomic_read (&tp->cur_tx);
1371 tx_left = cur_tx - dirty_tx;
1372 while (tx_left > 0) {
1373 int entry = dirty_tx % NUM_TX_DESC;
1374 int txstatus;
1375
1376 txstatus = NETDRV_R32 (TxStatus0 + (entry * sizeof (u32)));
1377
1378 if (!(txstatus & (TxStatOK | TxUnderrun | TxAborted)))
1379 break; /* It still hasn't been Txed */
1380
1381 /* Note: TxCarrierLost is always asserted at 100mbps. */
1382 if (txstatus & (TxOutOfWindow | TxAborted)) {
1383 /* There was an major error, log it. */
1384 DPRINTK ("%s: Transmit error, Tx status %8.8x.\n",
1385 dev->name, txstatus);
1386 dev->stats.tx_errors++;
1387 if (txstatus & TxAborted) {
1388 dev->stats.tx_aborted_errors++;
1389 NETDRV_W32 (TxConfig, TxClearAbt | (TX_DMA_BURST << TxDMAShift));
1390 }
1391 if (txstatus & TxCarrierLost)
1392 dev->stats.tx_carrier_errors++;
1393 if (txstatus & TxOutOfWindow)
1394 dev->stats.tx_window_errors++;
1395 } else {
1396 if (txstatus & TxUnderrun) {
1397 /* Add 64 to the Tx FIFO threshold. */
1398 if (tp->tx_flag < 0x00300000)
1399 tp->tx_flag += 0x00020000;
1400 dev->stats.tx_fifo_errors++;
1401 }
1402 dev->stats.collisions += (txstatus >> 24) & 15;
1403 dev->stats.tx_bytes += txstatus & 0x7ff;
1404 dev->stats.tx_packets++;
1405 }
1406
1407 /* Free the original skb. */
1408 if (tp->tx_info[entry].mapping != 0) {
1409 pci_unmap_single(tp->pci_dev,
1410 tp->tx_info[entry].mapping,
1411 tp->tx_info[entry].skb->len,
1412 PCI_DMA_TODEVICE);
1413 tp->tx_info[entry].mapping = 0;
1414 }
1415 dev_kfree_skb_irq (tp->tx_info[entry].skb);
1416 tp->tx_info[entry].skb = NULL;
1417 dirty_tx++;
1418 if (dirty_tx < 0) { /* handle signed int overflow */
1419 atomic_sub (cur_tx, &tp->cur_tx); /* XXX racy? */
1420 dirty_tx = cur_tx - tx_left + 1;
1421 }
1422 if (netif_queue_stopped (dev))
1423 netif_wake_queue (dev);
1424
1425 cur_tx = atomic_read (&tp->cur_tx);
1426 tx_left = cur_tx - dirty_tx;
1427
1428 }
1429
1430 #ifndef NETDRV_NDEBUG
1431 if (atomic_read (&tp->cur_tx) - dirty_tx > NUM_TX_DESC) {
1432 printk (KERN_ERR
1433 "%s: Out-of-sync dirty pointer, %d vs. %d.\n",
1434 dev->name, dirty_tx, atomic_read (&tp->cur_tx));
1435 dirty_tx += NUM_TX_DESC;
1436 }
1437 #endif /* NETDRV_NDEBUG */
1438
1439 atomic_set (&tp->dirty_tx, dirty_tx);
1440 }
1441
1442
1443 /* TODO: clean this up! Rx reset need not be this intensive */
1444 static void netdrv_rx_err (u32 rx_status, struct net_device *dev,
1445 struct netdrv_private *tp, void *ioaddr)
1446 {
1447 u8 tmp8;
1448 int tmp_work = 1000;
1449
1450 DPRINTK ("%s: Ethernet frame had errors, status %8.8x.\n",
1451 dev->name, rx_status);
1452 if (rx_status & RxTooLong) {
1453 DPRINTK ("%s: Oversized Ethernet frame, status %4.4x!\n",
1454 dev->name, rx_status);
1455 /* A.C.: The chip hangs here. */
1456 }
1457 dev->stats.rx_errors++;
1458 if (rx_status & (RxBadSymbol | RxBadAlign))
1459 dev->stats.rx_frame_errors++;
1460 if (rx_status & (RxRunt | RxTooLong))
1461 dev->stats.rx_length_errors++;
1462 if (rx_status & RxCRCErr)
1463 dev->stats.rx_crc_errors++;
1464 /* Reset the receiver, based on RealTek recommendation. (Bug?) */
1465 tp->cur_rx = 0;
1466
1467 /* disable receive */
1468 tmp8 = NETDRV_R8 (ChipCmd) & ChipCmdClear;
1469 NETDRV_W8_F (ChipCmd, tmp8 | CmdTxEnb);
1470
1471 /* A.C.: Reset the multicast list. */
1472 netdrv_set_rx_mode (dev);
1473
1474 /* XXX potentially temporary hack to
1475 * restart hung receiver */
1476 while (--tmp_work > 0) {
1477 tmp8 = NETDRV_R8 (ChipCmd);
1478 if ((tmp8 & CmdRxEnb) && (tmp8 & CmdTxEnb))
1479 break;
1480 NETDRV_W8_F (ChipCmd,
1481 (tmp8 & ChipCmdClear) | CmdRxEnb | CmdTxEnb);
1482 }
1483
1484 /* G.S.: Re-enable receiver */
1485 /* XXX temporary hack to work around receiver hang */
1486 netdrv_set_rx_mode (dev);
1487
1488 if (tmp_work <= 0)
1489 printk (KERN_WARNING PFX "tx/rx enable wait too long\n");
1490 }
1491
1492
1493 /* The data sheet doesn't describe the Rx ring at all, so I'm guessing at the
1494 field alignments and semantics. */
1495 static void netdrv_rx_interrupt (struct net_device *dev,
1496 struct netdrv_private *tp, void *ioaddr)
1497 {
1498 unsigned char *rx_ring;
1499 u16 cur_rx;
1500
1501 assert (dev != NULL);
1502 assert (tp != NULL);
1503 assert (ioaddr != NULL);
1504
1505 rx_ring = tp->rx_ring;
1506 cur_rx = tp->cur_rx;
1507
1508 DPRINTK ("%s: In netdrv_rx(), current %4.4x BufAddr %4.4x,"
1509 " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx,
1510 NETDRV_R16 (RxBufAddr),
1511 NETDRV_R16 (RxBufPtr), NETDRV_R8 (ChipCmd));
1512
1513 while ((NETDRV_R8 (ChipCmd) & RxBufEmpty) == 0) {
1514 int ring_offset = cur_rx % RX_BUF_LEN;
1515 u32 rx_status;
1516 unsigned int rx_size;
1517 unsigned int pkt_size;
1518 struct sk_buff *skb;
1519
1520 /* read size+status of next frame from DMA ring buffer */
1521 rx_status = le32_to_cpu (*(u32 *) (rx_ring + ring_offset));
1522 rx_size = rx_status >> 16;
1523 pkt_size = rx_size - 4;
1524
1525 DPRINTK ("%s: netdrv_rx() status %4.4x, size %4.4x,"
1526 " cur %4.4x.\n", dev->name, rx_status,
1527 rx_size, cur_rx);
1528 #if defined(NETDRV_DEBUG) && (NETDRV_DEBUG > 2)
1529 {
1530 int i;
1531 DPRINTK ("%s: Frame contents ", dev->name);
1532 for (i = 0; i < 70; i++)
1533 printk (" %2.2x",
1534 rx_ring[ring_offset + i]);
1535 printk (".\n");
1536 }
1537 #endif
1538
1539 /* If Rx err or invalid rx_size/rx_status received
1540 * (which happens if we get lost in the ring),
1541 * Rx process gets reset, so we abort any further
1542 * Rx processing.
1543 */
1544 if ((rx_size > (MAX_ETH_FRAME_SIZE+4)) ||
1545 (!(rx_status & RxStatusOK))) {
1546 netdrv_rx_err (rx_status, dev, tp, ioaddr);
1547 return;
1548 }
1549
1550 /* Malloc up new buffer, compatible with net-2e. */
1551 /* Omit the four octet CRC from the length. */
1552
1553 /* TODO: consider allocating skb's outside of
1554 * interrupt context, both to speed interrupt processing,
1555 * and also to reduce the chances of having to
1556 * drop packets here under memory pressure.
1557 */
1558
1559 skb = dev_alloc_skb (pkt_size + 2);
1560 if (skb) {
1561 skb_reserve (skb, 2); /* 16 byte align the IP fields. */
1562
1563 skb_copy_to_linear_data (skb, &rx_ring[ring_offset + 4], pkt_size);
1564 skb_put (skb, pkt_size);
1565
1566 skb->protocol = eth_type_trans (skb, dev);
1567 netif_rx (skb);
1568 dev->stats.rx_bytes += pkt_size;
1569 dev->stats.rx_packets++;
1570 } else {
1571 printk (KERN_WARNING
1572 "%s: Memory squeeze, dropping packet.\n",
1573 dev->name);
1574 dev->stats.rx_dropped++;
1575 }
1576
1577 cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
1578 NETDRV_W16_F (RxBufPtr, cur_rx - 16);
1579 }
1580
1581 DPRINTK ("%s: Done netdrv_rx(), current %4.4x BufAddr %4.4x,"
1582 " free to %4.4x, Cmd %2.2x.\n", dev->name, cur_rx,
1583 NETDRV_R16 (RxBufAddr),
1584 NETDRV_R16 (RxBufPtr), NETDRV_R8 (ChipCmd));
1585
1586 tp->cur_rx = cur_rx;
1587 }
1588
1589
1590 static void netdrv_weird_interrupt (struct net_device *dev,
1591 struct netdrv_private *tp,
1592 void *ioaddr,
1593 int status, int link_changed)
1594 {
1595 printk (KERN_DEBUG "%s: Abnormal interrupt, status %8.8x.\n",
1596 dev->name, status);
1597
1598 assert (dev != NULL);
1599 assert (tp != NULL);
1600 assert (ioaddr != NULL);
1601
1602 /* Update the error count. */
1603 dev->stats.rx_missed_errors += NETDRV_R32 (RxMissed);
1604 NETDRV_W32 (RxMissed, 0);
1605
1606 if ((status & RxUnderrun) && link_changed &&
1607 (tp->drv_flags & HAS_LNK_CHNG)) {
1608 /* Really link-change on new chips. */
1609 int lpar = NETDRV_R16 (NWayLPAR);
1610 int duplex = (lpar & 0x0100) || (lpar & 0x01C0) == 0x0040
1611 || tp->duplex_lock;
1612 if (tp->full_duplex != duplex) {
1613 tp->full_duplex = duplex;
1614 NETDRV_W8 (Cfg9346, Cfg9346_Unlock);
1615 NETDRV_W8 (Config1, tp->full_duplex ? 0x60 : 0x20);
1616 NETDRV_W8 (Cfg9346, Cfg9346_Lock);
1617 }
1618 status &= ~RxUnderrun;
1619 }
1620
1621 /* XXX along with netdrv_rx_err, are we double-counting errors? */
1622 if (status &
1623 (RxUnderrun | RxOverflow | RxErr | RxFIFOOver))
1624 dev->stats.rx_errors++;
1625
1626 if (status & (PCSTimeout))
1627 dev->stats.rx_length_errors++;
1628 if (status & (RxUnderrun | RxFIFOOver))
1629 dev->stats.rx_fifo_errors++;
1630 if (status & RxOverflow) {
1631 dev->stats.rx_over_errors++;
1632 tp->cur_rx = NETDRV_R16 (RxBufAddr) % RX_BUF_LEN;
1633 NETDRV_W16_F (RxBufPtr, tp->cur_rx - 16);
1634 }
1635 if (status & PCIErr) {
1636 u16 pci_cmd_status;
1637 pci_read_config_word (tp->pci_dev, PCI_STATUS, &pci_cmd_status);
1638
1639 printk (KERN_ERR "%s: PCI Bus error %4.4x.\n",
1640 dev->name, pci_cmd_status);
1641 }
1642 }
1643
1644
1645 /* The interrupt handler does all of the Rx thread work and cleans up
1646 after the Tx thread. */
1647 static irqreturn_t netdrv_interrupt (int irq, void *dev_instance)
1648 {
1649 struct net_device *dev = (struct net_device *) dev_instance;
1650 struct netdrv_private *tp = netdev_priv(dev);
1651 int boguscnt = max_interrupt_work;
1652 void *ioaddr = tp->mmio_addr;
1653 int status = 0, link_changed = 0; /* avoid bogus "uninit" warning */
1654 int handled = 0;
1655
1656 spin_lock (&tp->lock);
1657
1658 do {
1659 status = NETDRV_R16 (IntrStatus);
1660
1661 /* h/w no longer present (hotplug?) or major error, bail */
1662 if (status == 0xFFFF)
1663 break;
1664
1665 handled = 1;
1666 /* Acknowledge all of the current interrupt sources ASAP */
1667 NETDRV_W16_F (IntrStatus, status);
1668
1669 DPRINTK ("%s: interrupt status=%#4.4x new intstat=%#4.4x.\n",
1670 dev->name, status,
1671 NETDRV_R16 (IntrStatus));
1672
1673 if ((status &
1674 (PCIErr | PCSTimeout | RxUnderrun | RxOverflow |
1675 RxFIFOOver | TxErr | TxOK | RxErr | RxOK)) == 0)
1676 break;
1677
1678 /* Check uncommon events with one test. */
1679 if (status & (PCIErr | PCSTimeout | RxUnderrun | RxOverflow |
1680 RxFIFOOver | TxErr | RxErr))
1681 netdrv_weird_interrupt (dev, tp, ioaddr,
1682 status, link_changed);
1683
1684 if (status & (RxOK | RxUnderrun | RxOverflow | RxFIFOOver)) /* Rx interrupt */
1685 netdrv_rx_interrupt (dev, tp, ioaddr);
1686
1687 if (status & (TxOK | TxErr))
1688 netdrv_tx_interrupt (dev, tp, ioaddr);
1689
1690 boguscnt--;
1691 } while (boguscnt > 0);
1692
1693 if (boguscnt <= 0) {
1694 printk (KERN_WARNING
1695 "%s: Too much work at interrupt, "
1696 "IntrStatus=0x%4.4x.\n", dev->name,
1697 status);
1698
1699 /* Clear all interrupt sources. */
1700 NETDRV_W16 (IntrStatus, 0xffff);
1701 }
1702
1703 spin_unlock (&tp->lock);
1704
1705 DPRINTK ("%s: exiting interrupt, intr_status=%#4.4x.\n",
1706 dev->name, NETDRV_R16 (IntrStatus));
1707 return IRQ_RETVAL(handled);
1708 }
1709
1710
1711 static int netdrv_close (struct net_device *dev)
1712 {
1713 struct netdrv_private *tp = netdev_priv(dev);
1714 void *ioaddr = tp->mmio_addr;
1715 unsigned long flags;
1716
1717 DPRINTK ("ENTER\n");
1718
1719 netif_stop_queue (dev);
1720
1721 DPRINTK ("%s: Shutting down ethercard, status was 0x%4.4x.\n",
1722 dev->name, NETDRV_R16 (IntrStatus));
1723
1724 del_timer_sync (&tp->timer);
1725
1726 spin_lock_irqsave (&tp->lock, flags);
1727
1728 /* Stop the chip's Tx and Rx DMA processes. */
1729 NETDRV_W8 (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear));
1730
1731 /* Disable interrupts by clearing the interrupt mask. */
1732 NETDRV_W16 (IntrMask, 0x0000);
1733
1734 /* Update the error counts. */
1735 dev->stats.rx_missed_errors += NETDRV_R32 (RxMissed);
1736 NETDRV_W32 (RxMissed, 0);
1737
1738 spin_unlock_irqrestore (&tp->lock, flags);
1739
1740 free_irq (dev->irq, dev);
1741
1742 netdrv_tx_clear (dev);
1743
1744 pci_free_consistent(tp->pci_dev, RX_BUF_TOT_LEN,
1745 tp->rx_ring, tp->rx_ring_dma);
1746 pci_free_consistent(tp->pci_dev, TX_BUF_TOT_LEN,
1747 tp->tx_bufs, tp->tx_bufs_dma);
1748 tp->rx_ring = NULL;
1749 tp->tx_bufs = NULL;
1750
1751 /* Green! Put the chip in low-power mode. */
1752 NETDRV_W8 (Cfg9346, Cfg9346_Unlock);
1753 NETDRV_W8 (Config1, 0x03);
1754 NETDRV_W8 (Cfg9346, Cfg9346_Lock);
1755
1756 DPRINTK ("EXIT\n");
1757 return 0;
1758 }
1759
1760
1761 static int netdrv_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
1762 {
1763 struct netdrv_private *tp = netdev_priv(dev);
1764 struct mii_ioctl_data *data = if_mii(rq);
1765 unsigned long flags;
1766 int rc = 0;
1767
1768 DPRINTK ("ENTER\n");
1769
1770 switch (cmd) {
1771 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
1772 data->phy_id = tp->phys[0] & 0x3f;
1773 /* Fall Through */
1774
1775 case SIOCGMIIREG: /* Read MII PHY register. */
1776 spin_lock_irqsave (&tp->lock, flags);
1777 data->val_out = mdio_read (dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
1778 spin_unlock_irqrestore (&tp->lock, flags);
1779 break;
1780
1781 case SIOCSMIIREG: /* Write MII PHY register. */
1782 if (!capable (CAP_NET_ADMIN)) {
1783 rc = -EPERM;
1784 break;
1785 }
1786
1787 spin_lock_irqsave (&tp->lock, flags);
1788 mdio_write (dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
1789 spin_unlock_irqrestore (&tp->lock, flags);
1790 break;
1791
1792 default:
1793 rc = -EOPNOTSUPP;
1794 break;
1795 }
1796
1797 DPRINTK ("EXIT, returning %d\n", rc);
1798 return rc;
1799 }
1800
1801 /* Set or clear the multicast filter for this adaptor.
1802 This routine is not state sensitive and need not be SMP locked. */
1803
1804 static void netdrv_set_rx_mode (struct net_device *dev)
1805 {
1806 struct netdrv_private *tp = netdev_priv(dev);
1807 void *ioaddr = tp->mmio_addr;
1808 u32 mc_filter[2]; /* Multicast hash filter */
1809 int i, rx_mode;
1810 u32 tmp;
1811
1812 DPRINTK ("ENTER\n");
1813
1814 DPRINTK ("%s: netdrv_set_rx_mode(%4.4x) done -- Rx config %8.8x.\n",
1815 dev->name, dev->flags, NETDRV_R32 (RxConfig));
1816
1817 /* Note: do not reorder, GCC is clever about common statements. */
1818 if (dev->flags & IFF_PROMISC) {
1819 rx_mode =
1820 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
1821 AcceptAllPhys;
1822 mc_filter[1] = mc_filter[0] = 0xffffffff;
1823 } else if ((dev->mc_count > multicast_filter_limit)
1824 || (dev->flags & IFF_ALLMULTI)) {
1825 /* Too many to filter perfectly -- accept all multicasts. */
1826 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
1827 mc_filter[1] = mc_filter[0] = 0xffffffff;
1828 } else {
1829 struct dev_mc_list *mclist;
1830 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
1831 mc_filter[1] = mc_filter[0] = 0;
1832 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
1833 i++, mclist = mclist->next) {
1834 int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
1835
1836 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
1837 }
1838 }
1839
1840 /* if called from irq handler, lock already acquired */
1841 if (!in_irq ())
1842 spin_lock_irq (&tp->lock);
1843
1844 /* We can safely update without stopping the chip. */
1845 tmp = netdrv_rx_config | rx_mode |
1846 (NETDRV_R32 (RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
1847 NETDRV_W32_F (RxConfig, tmp);
1848 NETDRV_W32_F (MAR0 + 0, mc_filter[0]);
1849 NETDRV_W32_F (MAR0 + 4, mc_filter[1]);
1850
1851 if (!in_irq ())
1852 spin_unlock_irq (&tp->lock);
1853
1854 DPRINTK ("EXIT\n");
1855 }
1856
1857
1858 #ifdef CONFIG_PM
1859
1860 static int netdrv_suspend (struct pci_dev *pdev, pm_message_t state)
1861 {
1862 struct net_device *dev = pci_get_drvdata (pdev);
1863 struct netdrv_private *tp = netdev_priv(dev);
1864 void *ioaddr = tp->mmio_addr;
1865 unsigned long flags;
1866
1867 if (!netif_running(dev))
1868 return 0;
1869 netif_device_detach (dev);
1870
1871 spin_lock_irqsave (&tp->lock, flags);
1872
1873 /* Disable interrupts, stop Tx and Rx. */
1874 NETDRV_W16 (IntrMask, 0x0000);
1875 NETDRV_W8 (ChipCmd, (NETDRV_R8 (ChipCmd) & ChipCmdClear));
1876
1877 /* Update the error counts. */
1878 dev->stats.rx_missed_errors += NETDRV_R32 (RxMissed);
1879 NETDRV_W32 (RxMissed, 0);
1880
1881 spin_unlock_irqrestore (&tp->lock, flags);
1882
1883 pci_save_state (pdev);
1884 pci_set_power_state (pdev, PCI_D3hot);
1885
1886 return 0;
1887 }
1888
1889
1890 static int netdrv_resume (struct pci_dev *pdev)
1891 {
1892 struct net_device *dev = pci_get_drvdata (pdev);
1893 /*struct netdrv_private *tp = netdev_priv(dev);*/
1894
1895 if (!netif_running(dev))
1896 return 0;
1897 pci_set_power_state (pdev, PCI_D0);
1898 pci_restore_state (pdev);
1899 netif_device_attach (dev);
1900 netdrv_hw_start (dev);
1901
1902 return 0;
1903 }
1904
1905 #endif /* CONFIG_PM */
1906
1907
1908 static struct pci_driver netdrv_pci_driver = {
1909 .name = MODNAME,
1910 .id_table = netdrv_pci_tbl,
1911 .probe = netdrv_init_one,
1912 .remove = __devexit_p(netdrv_remove_one),
1913 #ifdef CONFIG_PM
1914 .suspend = netdrv_suspend,
1915 .resume = netdrv_resume,
1916 #endif /* CONFIG_PM */
1917 };
1918
1919
1920 static int __init netdrv_init_module (void)
1921 {
1922 /* when a module, this is printed whether or not devices are found in probe */
1923 #ifdef MODULE
1924 printk(version);
1925 #endif
1926 return pci_register_driver(&netdrv_pci_driver);
1927 }
1928
1929
1930 static void __exit netdrv_cleanup_module (void)
1931 {
1932 pci_unregister_driver (&netdrv_pci_driver);
1933 }
1934
1935
1936 module_init(netdrv_init_module);
1937 module_exit(netdrv_cleanup_module);
Support for the Chinese Samsung S3C2440 based development boards