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1da177e4 LT |
1 | /* via-rhine.c: A Linux Ethernet device driver for VIA Rhine family chips. */ |
2 | /* | |
3 | Written 1998-2001 by Donald Becker. | |
4 | ||
5 | Current Maintainer: Roger Luethi <rl@hellgate.ch> | |
6 | ||
7 | This software may be used and distributed according to the terms of | |
8 | the GNU General Public License (GPL), incorporated herein by reference. | |
9 | Drivers based on or derived from this code fall under the GPL and must | |
10 | retain the authorship, copyright and license notice. This file is not | |
11 | a complete program and may only be used when the entire operating | |
12 | system is licensed under the GPL. | |
13 | ||
14 | This driver is designed for the VIA VT86C100A Rhine-I. | |
15 | It also works with the Rhine-II (6102) and Rhine-III (6105/6105L/6105LOM | |
16 | and management NIC 6105M). | |
17 | ||
18 | The author may be reached as becker@scyld.com, or C/O | |
19 | Scyld Computing Corporation | |
20 | 410 Severn Ave., Suite 210 | |
21 | Annapolis MD 21403 | |
22 | ||
23 | ||
24 | This driver contains some changes from the original Donald Becker | |
25 | version. He may or may not be interested in bug reports on this | |
26 | code. You can find his versions at: | |
27 | http://www.scyld.com/network/via-rhine.html | |
03a8c661 | 28 | [link no longer provides useful info -jgarzik] |
1da177e4 LT |
29 | |
30 | */ | |
31 | ||
32 | #define DRV_NAME "via-rhine" | |
03a8c661 JG |
33 | #define DRV_VERSION "1.4.0" |
34 | #define DRV_RELDATE "June-27-2006" | |
1da177e4 LT |
35 | |
36 | ||
37 | /* A few user-configurable values. | |
38 | These may be modified when a driver module is loaded. */ | |
39 | ||
40 | static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ | |
41 | static int max_interrupt_work = 20; | |
42 | ||
43 | /* Set the copy breakpoint for the copy-only-tiny-frames scheme. | |
44 | Setting to > 1518 effectively disables this feature. */ | |
45 | static int rx_copybreak; | |
46 | ||
47 | /* | |
48 | * In case you are looking for 'options[]' or 'full_duplex[]', they | |
49 | * are gone. Use ethtool(8) instead. | |
50 | */ | |
51 | ||
52 | /* Maximum number of multicast addresses to filter (vs. rx-all-multicast). | |
53 | The Rhine has a 64 element 8390-like hash table. */ | |
54 | static const int multicast_filter_limit = 32; | |
55 | ||
56 | ||
57 | /* Operational parameters that are set at compile time. */ | |
58 | ||
59 | /* Keep the ring sizes a power of two for compile efficiency. | |
60 | The compiler will convert <unsigned>'%'<2^N> into a bit mask. | |
61 | Making the Tx ring too large decreases the effectiveness of channel | |
62 | bonding and packet priority. | |
63 | There are no ill effects from too-large receive rings. */ | |
64 | #define TX_RING_SIZE 16 | |
65 | #define TX_QUEUE_LEN 10 /* Limit ring entries actually used. */ | |
66 | #define RX_RING_SIZE 16 | |
67 | ||
68 | ||
69 | /* Operational parameters that usually are not changed. */ | |
70 | ||
71 | /* Time in jiffies before concluding the transmitter is hung. */ | |
72 | #define TX_TIMEOUT (2*HZ) | |
73 | ||
74 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ | |
75 | ||
76 | #include <linux/module.h> | |
77 | #include <linux/moduleparam.h> | |
78 | #include <linux/kernel.h> | |
79 | #include <linux/string.h> | |
80 | #include <linux/timer.h> | |
81 | #include <linux/errno.h> | |
82 | #include <linux/ioport.h> | |
83 | #include <linux/slab.h> | |
84 | #include <linux/interrupt.h> | |
85 | #include <linux/pci.h> | |
1e7f0bd8 | 86 | #include <linux/dma-mapping.h> |
1da177e4 LT |
87 | #include <linux/netdevice.h> |
88 | #include <linux/etherdevice.h> | |
89 | #include <linux/skbuff.h> | |
90 | #include <linux/init.h> | |
91 | #include <linux/delay.h> | |
92 | #include <linux/mii.h> | |
93 | #include <linux/ethtool.h> | |
94 | #include <linux/crc32.h> | |
95 | #include <linux/bitops.h> | |
96 | #include <asm/processor.h> /* Processor type for cache alignment. */ | |
97 | #include <asm/io.h> | |
98 | #include <asm/irq.h> | |
99 | #include <asm/uaccess.h> | |
100 | ||
101 | /* These identify the driver base version and may not be removed. */ | |
102 | static char version[] __devinitdata = | |
103 | KERN_INFO DRV_NAME ".c:v1.10-LK" DRV_VERSION " " DRV_RELDATE " Written by Donald Becker\n"; | |
104 | ||
105 | /* This driver was written to use PCI memory space. Some early versions | |
106 | of the Rhine may only work correctly with I/O space accesses. */ | |
107 | #ifdef CONFIG_VIA_RHINE_MMIO | |
108 | #define USE_MMIO | |
109 | #else | |
110 | #endif | |
111 | ||
112 | MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); | |
113 | MODULE_DESCRIPTION("VIA Rhine PCI Fast Ethernet driver"); | |
114 | MODULE_LICENSE("GPL"); | |
115 | ||
116 | module_param(max_interrupt_work, int, 0); | |
117 | module_param(debug, int, 0); | |
118 | module_param(rx_copybreak, int, 0); | |
119 | MODULE_PARM_DESC(max_interrupt_work, "VIA Rhine maximum events handled per interrupt"); | |
120 | MODULE_PARM_DESC(debug, "VIA Rhine debug level (0-7)"); | |
121 | MODULE_PARM_DESC(rx_copybreak, "VIA Rhine copy breakpoint for copy-only-tiny-frames"); | |
122 | ||
123 | /* | |
124 | Theory of Operation | |
125 | ||
126 | I. Board Compatibility | |
127 | ||
128 | This driver is designed for the VIA 86c100A Rhine-II PCI Fast Ethernet | |
129 | controller. | |
130 | ||
131 | II. Board-specific settings | |
132 | ||
133 | Boards with this chip are functional only in a bus-master PCI slot. | |
134 | ||
135 | Many operational settings are loaded from the EEPROM to the Config word at | |
136 | offset 0x78. For most of these settings, this driver assumes that they are | |
137 | correct. | |
138 | If this driver is compiled to use PCI memory space operations the EEPROM | |
139 | must be configured to enable memory ops. | |
140 | ||
141 | III. Driver operation | |
142 | ||
143 | IIIa. Ring buffers | |
144 | ||
145 | This driver uses two statically allocated fixed-size descriptor lists | |
146 | formed into rings by a branch from the final descriptor to the beginning of | |
147 | the list. The ring sizes are set at compile time by RX/TX_RING_SIZE. | |
148 | ||
149 | IIIb/c. Transmit/Receive Structure | |
150 | ||
151 | This driver attempts to use a zero-copy receive and transmit scheme. | |
152 | ||
153 | Alas, all data buffers are required to start on a 32 bit boundary, so | |
154 | the driver must often copy transmit packets into bounce buffers. | |
155 | ||
156 | The driver allocates full frame size skbuffs for the Rx ring buffers at | |
157 | open() time and passes the skb->data field to the chip as receive data | |
158 | buffers. When an incoming frame is less than RX_COPYBREAK bytes long, | |
159 | a fresh skbuff is allocated and the frame is copied to the new skbuff. | |
160 | When the incoming frame is larger, the skbuff is passed directly up the | |
161 | protocol stack. Buffers consumed this way are replaced by newly allocated | |
162 | skbuffs in the last phase of rhine_rx(). | |
163 | ||
164 | The RX_COPYBREAK value is chosen to trade-off the memory wasted by | |
165 | using a full-sized skbuff for small frames vs. the copying costs of larger | |
166 | frames. New boards are typically used in generously configured machines | |
167 | and the underfilled buffers have negligible impact compared to the benefit of | |
168 | a single allocation size, so the default value of zero results in never | |
169 | copying packets. When copying is done, the cost is usually mitigated by using | |
170 | a combined copy/checksum routine. Copying also preloads the cache, which is | |
171 | most useful with small frames. | |
172 | ||
173 | Since the VIA chips are only able to transfer data to buffers on 32 bit | |
174 | boundaries, the IP header at offset 14 in an ethernet frame isn't | |
175 | longword aligned for further processing. Copying these unaligned buffers | |
176 | has the beneficial effect of 16-byte aligning the IP header. | |
177 | ||
178 | IIId. Synchronization | |
179 | ||
180 | The driver runs as two independent, single-threaded flows of control. One | |
181 | is the send-packet routine, which enforces single-threaded use by the | |
182 | dev->priv->lock spinlock. The other thread is the interrupt handler, which | |
183 | is single threaded by the hardware and interrupt handling software. | |
184 | ||
185 | The send packet thread has partial control over the Tx ring. It locks the | |
186 | dev->priv->lock whenever it's queuing a Tx packet. If the next slot in the ring | |
187 | is not available it stops the transmit queue by calling netif_stop_queue. | |
188 | ||
189 | The interrupt handler has exclusive control over the Rx ring and records stats | |
190 | from the Tx ring. After reaping the stats, it marks the Tx queue entry as | |
191 | empty by incrementing the dirty_tx mark. If at least half of the entries in | |
192 | the Rx ring are available the transmit queue is woken up if it was stopped. | |
193 | ||
194 | IV. Notes | |
195 | ||
196 | IVb. References | |
197 | ||
198 | Preliminary VT86C100A manual from http://www.via.com.tw/ | |
199 | http://www.scyld.com/expert/100mbps.html | |
200 | http://www.scyld.com/expert/NWay.html | |
201 | ftp://ftp.via.com.tw/public/lan/Products/NIC/VT86C100A/Datasheet/VT86C100A03.pdf | |
202 | ftp://ftp.via.com.tw/public/lan/Products/NIC/VT6102/Datasheet/VT6102_021.PDF | |
203 | ||
204 | ||
205 | IVc. Errata | |
206 | ||
207 | The VT86C100A manual is not reliable information. | |
208 | The 3043 chip does not handle unaligned transmit or receive buffers, resulting | |
209 | in significant performance degradation for bounce buffer copies on transmit | |
210 | and unaligned IP headers on receive. | |
211 | The chip does not pad to minimum transmit length. | |
212 | ||
213 | */ | |
214 | ||
215 | ||
216 | /* This table drives the PCI probe routines. It's mostly boilerplate in all | |
217 | of the drivers, and will likely be provided by some future kernel. | |
218 | Note the matching code -- the first table entry matchs all 56** cards but | |
219 | second only the 1234 card. | |
220 | */ | |
221 | ||
222 | enum rhine_revs { | |
223 | VT86C100A = 0x00, | |
224 | VTunknown0 = 0x20, | |
225 | VT6102 = 0x40, | |
226 | VT8231 = 0x50, /* Integrated MAC */ | |
227 | VT8233 = 0x60, /* Integrated MAC */ | |
228 | VT8235 = 0x74, /* Integrated MAC */ | |
229 | VT8237 = 0x78, /* Integrated MAC */ | |
230 | VTunknown1 = 0x7C, | |
231 | VT6105 = 0x80, | |
232 | VT6105_B0 = 0x83, | |
233 | VT6105L = 0x8A, | |
234 | VT6107 = 0x8C, | |
235 | VTunknown2 = 0x8E, | |
236 | VT6105M = 0x90, /* Management adapter */ | |
237 | }; | |
238 | ||
239 | enum rhine_quirks { | |
240 | rqWOL = 0x0001, /* Wake-On-LAN support */ | |
241 | rqForceReset = 0x0002, | |
242 | rq6patterns = 0x0040, /* 6 instead of 4 patterns for WOL */ | |
243 | rqStatusWBRace = 0x0080, /* Tx Status Writeback Error possible */ | |
244 | rqRhineI = 0x0100, /* See comment below */ | |
245 | }; | |
246 | /* | |
247 | * rqRhineI: VT86C100A (aka Rhine-I) uses different bits to enable | |
248 | * MMIO as well as for the collision counter and the Tx FIFO underflow | |
249 | * indicator. In addition, Tx and Rx buffers need to 4 byte aligned. | |
250 | */ | |
251 | ||
252 | /* Beware of PCI posted writes */ | |
253 | #define IOSYNC do { ioread8(ioaddr + StationAddr); } while (0) | |
254 | ||
46009c8b JG |
255 | static const struct pci_device_id rhine_pci_tbl[] = { |
256 | { 0x1106, 0x3043, PCI_ANY_ID, PCI_ANY_ID, }, /* VT86C100A */ | |
257 | { 0x1106, 0x3065, PCI_ANY_ID, PCI_ANY_ID, }, /* VT6102 */ | |
258 | { 0x1106, 0x3106, PCI_ANY_ID, PCI_ANY_ID, }, /* 6105{,L,LOM} */ | |
259 | { 0x1106, 0x3053, PCI_ANY_ID, PCI_ANY_ID, }, /* VT6105M */ | |
1da177e4 LT |
260 | { } /* terminate list */ |
261 | }; | |
262 | MODULE_DEVICE_TABLE(pci, rhine_pci_tbl); | |
263 | ||
264 | ||
265 | /* Offsets to the device registers. */ | |
266 | enum register_offsets { | |
267 | StationAddr=0x00, RxConfig=0x06, TxConfig=0x07, ChipCmd=0x08, | |
268 | ChipCmd1=0x09, | |
269 | IntrStatus=0x0C, IntrEnable=0x0E, | |
270 | MulticastFilter0=0x10, MulticastFilter1=0x14, | |
271 | RxRingPtr=0x18, TxRingPtr=0x1C, GFIFOTest=0x54, | |
272 | MIIPhyAddr=0x6C, MIIStatus=0x6D, PCIBusConfig=0x6E, | |
273 | MIICmd=0x70, MIIRegAddr=0x71, MIIData=0x72, MACRegEEcsr=0x74, | |
274 | ConfigA=0x78, ConfigB=0x79, ConfigC=0x7A, ConfigD=0x7B, | |
275 | RxMissed=0x7C, RxCRCErrs=0x7E, MiscCmd=0x81, | |
276 | StickyHW=0x83, IntrStatus2=0x84, | |
277 | WOLcrSet=0xA0, PwcfgSet=0xA1, WOLcgSet=0xA3, WOLcrClr=0xA4, | |
278 | WOLcrClr1=0xA6, WOLcgClr=0xA7, | |
279 | PwrcsrSet=0xA8, PwrcsrSet1=0xA9, PwrcsrClr=0xAC, PwrcsrClr1=0xAD, | |
280 | }; | |
281 | ||
282 | /* Bits in ConfigD */ | |
283 | enum backoff_bits { | |
284 | BackOptional=0x01, BackModify=0x02, | |
285 | BackCaptureEffect=0x04, BackRandom=0x08 | |
286 | }; | |
287 | ||
288 | #ifdef USE_MMIO | |
289 | /* Registers we check that mmio and reg are the same. */ | |
290 | static const int mmio_verify_registers[] = { | |
291 | RxConfig, TxConfig, IntrEnable, ConfigA, ConfigB, ConfigC, ConfigD, | |
292 | 0 | |
293 | }; | |
294 | #endif | |
295 | ||
296 | /* Bits in the interrupt status/mask registers. */ | |
297 | enum intr_status_bits { | |
298 | IntrRxDone=0x0001, IntrRxErr=0x0004, IntrRxEmpty=0x0020, | |
299 | IntrTxDone=0x0002, IntrTxError=0x0008, IntrTxUnderrun=0x0210, | |
300 | IntrPCIErr=0x0040, | |
301 | IntrStatsMax=0x0080, IntrRxEarly=0x0100, | |
302 | IntrRxOverflow=0x0400, IntrRxDropped=0x0800, IntrRxNoBuf=0x1000, | |
303 | IntrTxAborted=0x2000, IntrLinkChange=0x4000, | |
304 | IntrRxWakeUp=0x8000, | |
305 | IntrNormalSummary=0x0003, IntrAbnormalSummary=0xC260, | |
306 | IntrTxDescRace=0x080000, /* mapped from IntrStatus2 */ | |
307 | IntrTxErrSummary=0x082218, | |
308 | }; | |
309 | ||
310 | /* Bits in WOLcrSet/WOLcrClr and PwrcsrSet/PwrcsrClr */ | |
311 | enum wol_bits { | |
312 | WOLucast = 0x10, | |
313 | WOLmagic = 0x20, | |
314 | WOLbmcast = 0x30, | |
315 | WOLlnkon = 0x40, | |
316 | WOLlnkoff = 0x80, | |
317 | }; | |
318 | ||
319 | /* The Rx and Tx buffer descriptors. */ | |
320 | struct rx_desc { | |
321 | s32 rx_status; | |
322 | u32 desc_length; /* Chain flag, Buffer/frame length */ | |
323 | u32 addr; | |
324 | u32 next_desc; | |
325 | }; | |
326 | struct tx_desc { | |
327 | s32 tx_status; | |
328 | u32 desc_length; /* Chain flag, Tx Config, Frame length */ | |
329 | u32 addr; | |
330 | u32 next_desc; | |
331 | }; | |
332 | ||
333 | /* Initial value for tx_desc.desc_length, Buffer size goes to bits 0-10 */ | |
334 | #define TXDESC 0x00e08000 | |
335 | ||
336 | enum rx_status_bits { | |
337 | RxOK=0x8000, RxWholePkt=0x0300, RxErr=0x008F | |
338 | }; | |
339 | ||
340 | /* Bits in *_desc.*_status */ | |
341 | enum desc_status_bits { | |
342 | DescOwn=0x80000000 | |
343 | }; | |
344 | ||
345 | /* Bits in ChipCmd. */ | |
346 | enum chip_cmd_bits { | |
347 | CmdInit=0x01, CmdStart=0x02, CmdStop=0x04, CmdRxOn=0x08, | |
348 | CmdTxOn=0x10, Cmd1TxDemand=0x20, CmdRxDemand=0x40, | |
349 | Cmd1EarlyRx=0x01, Cmd1EarlyTx=0x02, Cmd1FDuplex=0x04, | |
350 | Cmd1NoTxPoll=0x08, Cmd1Reset=0x80, | |
351 | }; | |
352 | ||
353 | struct rhine_private { | |
354 | /* Descriptor rings */ | |
355 | struct rx_desc *rx_ring; | |
356 | struct tx_desc *tx_ring; | |
357 | dma_addr_t rx_ring_dma; | |
358 | dma_addr_t tx_ring_dma; | |
359 | ||
360 | /* The addresses of receive-in-place skbuffs. */ | |
361 | struct sk_buff *rx_skbuff[RX_RING_SIZE]; | |
362 | dma_addr_t rx_skbuff_dma[RX_RING_SIZE]; | |
363 | ||
364 | /* The saved address of a sent-in-place packet/buffer, for later free(). */ | |
365 | struct sk_buff *tx_skbuff[TX_RING_SIZE]; | |
366 | dma_addr_t tx_skbuff_dma[TX_RING_SIZE]; | |
367 | ||
4be5de25 | 368 | /* Tx bounce buffers (Rhine-I only) */ |
1da177e4 LT |
369 | unsigned char *tx_buf[TX_RING_SIZE]; |
370 | unsigned char *tx_bufs; | |
371 | dma_addr_t tx_bufs_dma; | |
372 | ||
373 | struct pci_dev *pdev; | |
374 | long pioaddr; | |
375 | struct net_device_stats stats; | |
376 | spinlock_t lock; | |
377 | ||
378 | /* Frequently used values: keep some adjacent for cache effect. */ | |
379 | u32 quirks; | |
380 | struct rx_desc *rx_head_desc; | |
381 | unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ | |
382 | unsigned int cur_tx, dirty_tx; | |
383 | unsigned int rx_buf_sz; /* Based on MTU+slack. */ | |
384 | u8 wolopts; | |
385 | ||
386 | u8 tx_thresh, rx_thresh; | |
387 | ||
388 | struct mii_if_info mii_if; | |
389 | void __iomem *base; | |
390 | }; | |
391 | ||
392 | static int mdio_read(struct net_device *dev, int phy_id, int location); | |
393 | static void mdio_write(struct net_device *dev, int phy_id, int location, int value); | |
394 | static int rhine_open(struct net_device *dev); | |
395 | static void rhine_tx_timeout(struct net_device *dev); | |
396 | static int rhine_start_tx(struct sk_buff *skb, struct net_device *dev); | |
397 | static irqreturn_t rhine_interrupt(int irq, void *dev_instance, struct pt_regs *regs); | |
398 | static void rhine_tx(struct net_device *dev); | |
399 | static void rhine_rx(struct net_device *dev); | |
400 | static void rhine_error(struct net_device *dev, int intr_status); | |
401 | static void rhine_set_rx_mode(struct net_device *dev); | |
402 | static struct net_device_stats *rhine_get_stats(struct net_device *dev); | |
403 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
404 | static struct ethtool_ops netdev_ethtool_ops; | |
405 | static int rhine_close(struct net_device *dev); | |
d18c3db5 | 406 | static void rhine_shutdown (struct pci_dev *pdev); |
1da177e4 LT |
407 | |
408 | #define RHINE_WAIT_FOR(condition) do { \ | |
409 | int i=1024; \ | |
410 | while (!(condition) && --i) \ | |
411 | ; \ | |
412 | if (debug > 1 && i < 512) \ | |
413 | printk(KERN_INFO "%s: %4d cycles used @ %s:%d\n", \ | |
414 | DRV_NAME, 1024-i, __func__, __LINE__); \ | |
415 | } while(0) | |
416 | ||
417 | static inline u32 get_intr_status(struct net_device *dev) | |
418 | { | |
419 | struct rhine_private *rp = netdev_priv(dev); | |
420 | void __iomem *ioaddr = rp->base; | |
421 | u32 intr_status; | |
422 | ||
423 | intr_status = ioread16(ioaddr + IntrStatus); | |
424 | /* On Rhine-II, Bit 3 indicates Tx descriptor write-back race. */ | |
425 | if (rp->quirks & rqStatusWBRace) | |
426 | intr_status |= ioread8(ioaddr + IntrStatus2) << 16; | |
427 | return intr_status; | |
428 | } | |
429 | ||
430 | /* | |
431 | * Get power related registers into sane state. | |
432 | * Notify user about past WOL event. | |
433 | */ | |
434 | static void rhine_power_init(struct net_device *dev) | |
435 | { | |
436 | struct rhine_private *rp = netdev_priv(dev); | |
437 | void __iomem *ioaddr = rp->base; | |
438 | u16 wolstat; | |
439 | ||
440 | if (rp->quirks & rqWOL) { | |
441 | /* Make sure chip is in power state D0 */ | |
442 | iowrite8(ioread8(ioaddr + StickyHW) & 0xFC, ioaddr + StickyHW); | |
443 | ||
444 | /* Disable "force PME-enable" */ | |
445 | iowrite8(0x80, ioaddr + WOLcgClr); | |
446 | ||
447 | /* Clear power-event config bits (WOL) */ | |
448 | iowrite8(0xFF, ioaddr + WOLcrClr); | |
449 | /* More recent cards can manage two additional patterns */ | |
450 | if (rp->quirks & rq6patterns) | |
451 | iowrite8(0x03, ioaddr + WOLcrClr1); | |
452 | ||
453 | /* Save power-event status bits */ | |
454 | wolstat = ioread8(ioaddr + PwrcsrSet); | |
455 | if (rp->quirks & rq6patterns) | |
456 | wolstat |= (ioread8(ioaddr + PwrcsrSet1) & 0x03) << 8; | |
457 | ||
458 | /* Clear power-event status bits */ | |
459 | iowrite8(0xFF, ioaddr + PwrcsrClr); | |
460 | if (rp->quirks & rq6patterns) | |
461 | iowrite8(0x03, ioaddr + PwrcsrClr1); | |
462 | ||
463 | if (wolstat) { | |
464 | char *reason; | |
465 | switch (wolstat) { | |
466 | case WOLmagic: | |
467 | reason = "Magic packet"; | |
468 | break; | |
469 | case WOLlnkon: | |
470 | reason = "Link went up"; | |
471 | break; | |
472 | case WOLlnkoff: | |
473 | reason = "Link went down"; | |
474 | break; | |
475 | case WOLucast: | |
476 | reason = "Unicast packet"; | |
477 | break; | |
478 | case WOLbmcast: | |
479 | reason = "Multicast/broadcast packet"; | |
480 | break; | |
481 | default: | |
482 | reason = "Unknown"; | |
483 | } | |
484 | printk(KERN_INFO "%s: Woke system up. Reason: %s.\n", | |
485 | DRV_NAME, reason); | |
486 | } | |
487 | } | |
488 | } | |
489 | ||
490 | static void rhine_chip_reset(struct net_device *dev) | |
491 | { | |
492 | struct rhine_private *rp = netdev_priv(dev); | |
493 | void __iomem *ioaddr = rp->base; | |
494 | ||
495 | iowrite8(Cmd1Reset, ioaddr + ChipCmd1); | |
496 | IOSYNC; | |
497 | ||
498 | if (ioread8(ioaddr + ChipCmd1) & Cmd1Reset) { | |
499 | printk(KERN_INFO "%s: Reset not complete yet. " | |
500 | "Trying harder.\n", DRV_NAME); | |
501 | ||
502 | /* Force reset */ | |
503 | if (rp->quirks & rqForceReset) | |
504 | iowrite8(0x40, ioaddr + MiscCmd); | |
505 | ||
506 | /* Reset can take somewhat longer (rare) */ | |
507 | RHINE_WAIT_FOR(!(ioread8(ioaddr + ChipCmd1) & Cmd1Reset)); | |
508 | } | |
509 | ||
510 | if (debug > 1) | |
511 | printk(KERN_INFO "%s: Reset %s.\n", dev->name, | |
512 | (ioread8(ioaddr + ChipCmd1) & Cmd1Reset) ? | |
513 | "failed" : "succeeded"); | |
514 | } | |
515 | ||
516 | #ifdef USE_MMIO | |
517 | static void enable_mmio(long pioaddr, u32 quirks) | |
518 | { | |
519 | int n; | |
520 | if (quirks & rqRhineI) { | |
521 | /* More recent docs say that this bit is reserved ... */ | |
522 | n = inb(pioaddr + ConfigA) | 0x20; | |
523 | outb(n, pioaddr + ConfigA); | |
524 | } else { | |
525 | n = inb(pioaddr + ConfigD) | 0x80; | |
526 | outb(n, pioaddr + ConfigD); | |
527 | } | |
528 | } | |
529 | #endif | |
530 | ||
531 | /* | |
532 | * Loads bytes 0x00-0x05, 0x6E-0x6F, 0x78-0x7B from EEPROM | |
533 | * (plus 0x6C for Rhine-I/II) | |
534 | */ | |
535 | static void __devinit rhine_reload_eeprom(long pioaddr, struct net_device *dev) | |
536 | { | |
537 | struct rhine_private *rp = netdev_priv(dev); | |
538 | void __iomem *ioaddr = rp->base; | |
539 | ||
540 | outb(0x20, pioaddr + MACRegEEcsr); | |
541 | RHINE_WAIT_FOR(!(inb(pioaddr + MACRegEEcsr) & 0x20)); | |
542 | ||
543 | #ifdef USE_MMIO | |
544 | /* | |
545 | * Reloading from EEPROM overwrites ConfigA-D, so we must re-enable | |
546 | * MMIO. If reloading EEPROM was done first this could be avoided, but | |
547 | * it is not known if that still works with the "win98-reboot" problem. | |
548 | */ | |
549 | enable_mmio(pioaddr, rp->quirks); | |
550 | #endif | |
551 | ||
552 | /* Turn off EEPROM-controlled wake-up (magic packet) */ | |
553 | if (rp->quirks & rqWOL) | |
554 | iowrite8(ioread8(ioaddr + ConfigA) & 0xFC, ioaddr + ConfigA); | |
555 | ||
556 | } | |
557 | ||
558 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
559 | static void rhine_poll(struct net_device *dev) | |
560 | { | |
561 | disable_irq(dev->irq); | |
562 | rhine_interrupt(dev->irq, (void *)dev, NULL); | |
563 | enable_irq(dev->irq); | |
564 | } | |
565 | #endif | |
566 | ||
567 | static void rhine_hw_init(struct net_device *dev, long pioaddr) | |
568 | { | |
569 | struct rhine_private *rp = netdev_priv(dev); | |
570 | ||
571 | /* Reset the chip to erase previous misconfiguration. */ | |
572 | rhine_chip_reset(dev); | |
573 | ||
574 | /* Rhine-I needs extra time to recuperate before EEPROM reload */ | |
575 | if (rp->quirks & rqRhineI) | |
576 | msleep(5); | |
577 | ||
578 | /* Reload EEPROM controlled bytes cleared by soft reset */ | |
579 | rhine_reload_eeprom(pioaddr, dev); | |
580 | } | |
581 | ||
582 | static int __devinit rhine_init_one(struct pci_dev *pdev, | |
583 | const struct pci_device_id *ent) | |
584 | { | |
585 | struct net_device *dev; | |
586 | struct rhine_private *rp; | |
587 | int i, rc; | |
588 | u8 pci_rev; | |
589 | u32 quirks; | |
590 | long pioaddr; | |
591 | long memaddr; | |
592 | void __iomem *ioaddr; | |
593 | int io_size, phy_id; | |
594 | const char *name; | |
595 | #ifdef USE_MMIO | |
596 | int bar = 1; | |
597 | #else | |
598 | int bar = 0; | |
599 | #endif | |
600 | ||
601 | /* when built into the kernel, we only print version if device is found */ | |
602 | #ifndef MODULE | |
603 | static int printed_version; | |
604 | if (!printed_version++) | |
605 | printk(version); | |
606 | #endif | |
607 | ||
608 | pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev); | |
609 | ||
610 | io_size = 256; | |
611 | phy_id = 0; | |
612 | quirks = 0; | |
613 | name = "Rhine"; | |
614 | if (pci_rev < VTunknown0) { | |
615 | quirks = rqRhineI; | |
616 | io_size = 128; | |
617 | } | |
618 | else if (pci_rev >= VT6102) { | |
619 | quirks = rqWOL | rqForceReset; | |
620 | if (pci_rev < VT6105) { | |
621 | name = "Rhine II"; | |
622 | quirks |= rqStatusWBRace; /* Rhine-II exclusive */ | |
623 | } | |
624 | else { | |
625 | phy_id = 1; /* Integrated PHY, phy_id fixed to 1 */ | |
626 | if (pci_rev >= VT6105_B0) | |
627 | quirks |= rq6patterns; | |
628 | if (pci_rev < VT6105M) | |
629 | name = "Rhine III"; | |
630 | else | |
631 | name = "Rhine III (Management Adapter)"; | |
632 | } | |
633 | } | |
634 | ||
635 | rc = pci_enable_device(pdev); | |
636 | if (rc) | |
637 | goto err_out; | |
638 | ||
639 | /* this should always be supported */ | |
1e7f0bd8 | 640 | rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
1da177e4 LT |
641 | if (rc) { |
642 | printk(KERN_ERR "32-bit PCI DMA addresses not supported by " | |
643 | "the card!?\n"); | |
644 | goto err_out; | |
645 | } | |
646 | ||
647 | /* sanity check */ | |
648 | if ((pci_resource_len(pdev, 0) < io_size) || | |
649 | (pci_resource_len(pdev, 1) < io_size)) { | |
650 | rc = -EIO; | |
651 | printk(KERN_ERR "Insufficient PCI resources, aborting\n"); | |
652 | goto err_out; | |
653 | } | |
654 | ||
655 | pioaddr = pci_resource_start(pdev, 0); | |
656 | memaddr = pci_resource_start(pdev, 1); | |
657 | ||
658 | pci_set_master(pdev); | |
659 | ||
660 | dev = alloc_etherdev(sizeof(struct rhine_private)); | |
661 | if (!dev) { | |
662 | rc = -ENOMEM; | |
663 | printk(KERN_ERR "alloc_etherdev failed\n"); | |
664 | goto err_out; | |
665 | } | |
666 | SET_MODULE_OWNER(dev); | |
667 | SET_NETDEV_DEV(dev, &pdev->dev); | |
668 | ||
669 | rp = netdev_priv(dev); | |
670 | rp->quirks = quirks; | |
671 | rp->pioaddr = pioaddr; | |
672 | rp->pdev = pdev; | |
673 | ||
674 | rc = pci_request_regions(pdev, DRV_NAME); | |
675 | if (rc) | |
676 | goto err_out_free_netdev; | |
677 | ||
678 | ioaddr = pci_iomap(pdev, bar, io_size); | |
679 | if (!ioaddr) { | |
680 | rc = -EIO; | |
681 | printk(KERN_ERR "ioremap failed for device %s, region 0x%X " | |
682 | "@ 0x%lX\n", pci_name(pdev), io_size, memaddr); | |
683 | goto err_out_free_res; | |
684 | } | |
685 | ||
686 | #ifdef USE_MMIO | |
687 | enable_mmio(pioaddr, quirks); | |
688 | ||
689 | /* Check that selected MMIO registers match the PIO ones */ | |
690 | i = 0; | |
691 | while (mmio_verify_registers[i]) { | |
692 | int reg = mmio_verify_registers[i++]; | |
693 | unsigned char a = inb(pioaddr+reg); | |
694 | unsigned char b = readb(ioaddr+reg); | |
695 | if (a != b) { | |
696 | rc = -EIO; | |
697 | printk(KERN_ERR "MMIO do not match PIO [%02x] " | |
698 | "(%02x != %02x)\n", reg, a, b); | |
699 | goto err_out_unmap; | |
700 | } | |
701 | } | |
702 | #endif /* USE_MMIO */ | |
703 | ||
704 | dev->base_addr = (unsigned long)ioaddr; | |
705 | rp->base = ioaddr; | |
706 | ||
707 | /* Get chip registers into a sane state */ | |
708 | rhine_power_init(dev); | |
709 | rhine_hw_init(dev, pioaddr); | |
710 | ||
711 | for (i = 0; i < 6; i++) | |
712 | dev->dev_addr[i] = ioread8(ioaddr + StationAddr + i); | |
b81e8e1f | 713 | memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); |
1da177e4 | 714 | |
b81e8e1f | 715 | if (!is_valid_ether_addr(dev->perm_addr)) { |
1da177e4 LT |
716 | rc = -EIO; |
717 | printk(KERN_ERR "Invalid MAC address\n"); | |
718 | goto err_out_unmap; | |
719 | } | |
720 | ||
721 | /* For Rhine-I/II, phy_id is loaded from EEPROM */ | |
722 | if (!phy_id) | |
723 | phy_id = ioread8(ioaddr + 0x6C); | |
724 | ||
725 | dev->irq = pdev->irq; | |
726 | ||
727 | spin_lock_init(&rp->lock); | |
728 | rp->mii_if.dev = dev; | |
729 | rp->mii_if.mdio_read = mdio_read; | |
730 | rp->mii_if.mdio_write = mdio_write; | |
731 | rp->mii_if.phy_id_mask = 0x1f; | |
732 | rp->mii_if.reg_num_mask = 0x1f; | |
733 | ||
734 | /* The chip-specific entries in the device structure. */ | |
735 | dev->open = rhine_open; | |
736 | dev->hard_start_xmit = rhine_start_tx; | |
737 | dev->stop = rhine_close; | |
738 | dev->get_stats = rhine_get_stats; | |
739 | dev->set_multicast_list = rhine_set_rx_mode; | |
740 | dev->do_ioctl = netdev_ioctl; | |
741 | dev->ethtool_ops = &netdev_ethtool_ops; | |
742 | dev->tx_timeout = rhine_tx_timeout; | |
743 | dev->watchdog_timeo = TX_TIMEOUT; | |
744 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
745 | dev->poll_controller = rhine_poll; | |
746 | #endif | |
747 | if (rp->quirks & rqRhineI) | |
748 | dev->features |= NETIF_F_SG|NETIF_F_HW_CSUM; | |
749 | ||
750 | /* dev->name not defined before register_netdev()! */ | |
751 | rc = register_netdev(dev); | |
752 | if (rc) | |
753 | goto err_out_unmap; | |
754 | ||
755 | printk(KERN_INFO "%s: VIA %s at 0x%lx, ", | |
756 | dev->name, name, | |
757 | #ifdef USE_MMIO | |
758 | memaddr | |
759 | #else | |
760 | (long)ioaddr | |
761 | #endif | |
762 | ); | |
763 | ||
764 | for (i = 0; i < 5; i++) | |
765 | printk("%2.2x:", dev->dev_addr[i]); | |
766 | printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], pdev->irq); | |
767 | ||
768 | pci_set_drvdata(pdev, dev); | |
769 | ||
770 | { | |
771 | u16 mii_cmd; | |
772 | int mii_status = mdio_read(dev, phy_id, 1); | |
773 | mii_cmd = mdio_read(dev, phy_id, MII_BMCR) & ~BMCR_ISOLATE; | |
774 | mdio_write(dev, phy_id, MII_BMCR, mii_cmd); | |
775 | if (mii_status != 0xffff && mii_status != 0x0000) { | |
776 | rp->mii_if.advertising = mdio_read(dev, phy_id, 4); | |
777 | printk(KERN_INFO "%s: MII PHY found at address " | |
778 | "%d, status 0x%4.4x advertising %4.4x " | |
779 | "Link %4.4x.\n", dev->name, phy_id, | |
780 | mii_status, rp->mii_if.advertising, | |
781 | mdio_read(dev, phy_id, 5)); | |
782 | ||
783 | /* set IFF_RUNNING */ | |
784 | if (mii_status & BMSR_LSTATUS) | |
785 | netif_carrier_on(dev); | |
786 | else | |
787 | netif_carrier_off(dev); | |
788 | ||
789 | } | |
790 | } | |
791 | rp->mii_if.phy_id = phy_id; | |
792 | ||
793 | return 0; | |
794 | ||
795 | err_out_unmap: | |
796 | pci_iounmap(pdev, ioaddr); | |
797 | err_out_free_res: | |
798 | pci_release_regions(pdev); | |
799 | err_out_free_netdev: | |
800 | free_netdev(dev); | |
801 | err_out: | |
802 | return rc; | |
803 | } | |
804 | ||
805 | static int alloc_ring(struct net_device* dev) | |
806 | { | |
807 | struct rhine_private *rp = netdev_priv(dev); | |
808 | void *ring; | |
809 | dma_addr_t ring_dma; | |
810 | ||
811 | ring = pci_alloc_consistent(rp->pdev, | |
812 | RX_RING_SIZE * sizeof(struct rx_desc) + | |
813 | TX_RING_SIZE * sizeof(struct tx_desc), | |
814 | &ring_dma); | |
815 | if (!ring) { | |
816 | printk(KERN_ERR "Could not allocate DMA memory.\n"); | |
817 | return -ENOMEM; | |
818 | } | |
819 | if (rp->quirks & rqRhineI) { | |
820 | rp->tx_bufs = pci_alloc_consistent(rp->pdev, | |
821 | PKT_BUF_SZ * TX_RING_SIZE, | |
822 | &rp->tx_bufs_dma); | |
823 | if (rp->tx_bufs == NULL) { | |
824 | pci_free_consistent(rp->pdev, | |
825 | RX_RING_SIZE * sizeof(struct rx_desc) + | |
826 | TX_RING_SIZE * sizeof(struct tx_desc), | |
827 | ring, ring_dma); | |
828 | return -ENOMEM; | |
829 | } | |
830 | } | |
831 | ||
832 | rp->rx_ring = ring; | |
833 | rp->tx_ring = ring + RX_RING_SIZE * sizeof(struct rx_desc); | |
834 | rp->rx_ring_dma = ring_dma; | |
835 | rp->tx_ring_dma = ring_dma + RX_RING_SIZE * sizeof(struct rx_desc); | |
836 | ||
837 | return 0; | |
838 | } | |
839 | ||
840 | static void free_ring(struct net_device* dev) | |
841 | { | |
842 | struct rhine_private *rp = netdev_priv(dev); | |
843 | ||
844 | pci_free_consistent(rp->pdev, | |
845 | RX_RING_SIZE * sizeof(struct rx_desc) + | |
846 | TX_RING_SIZE * sizeof(struct tx_desc), | |
847 | rp->rx_ring, rp->rx_ring_dma); | |
848 | rp->tx_ring = NULL; | |
849 | ||
850 | if (rp->tx_bufs) | |
851 | pci_free_consistent(rp->pdev, PKT_BUF_SZ * TX_RING_SIZE, | |
852 | rp->tx_bufs, rp->tx_bufs_dma); | |
853 | ||
854 | rp->tx_bufs = NULL; | |
855 | ||
856 | } | |
857 | ||
858 | static void alloc_rbufs(struct net_device *dev) | |
859 | { | |
860 | struct rhine_private *rp = netdev_priv(dev); | |
861 | dma_addr_t next; | |
862 | int i; | |
863 | ||
864 | rp->dirty_rx = rp->cur_rx = 0; | |
865 | ||
866 | rp->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); | |
867 | rp->rx_head_desc = &rp->rx_ring[0]; | |
868 | next = rp->rx_ring_dma; | |
869 | ||
870 | /* Init the ring entries */ | |
871 | for (i = 0; i < RX_RING_SIZE; i++) { | |
872 | rp->rx_ring[i].rx_status = 0; | |
873 | rp->rx_ring[i].desc_length = cpu_to_le32(rp->rx_buf_sz); | |
874 | next += sizeof(struct rx_desc); | |
875 | rp->rx_ring[i].next_desc = cpu_to_le32(next); | |
876 | rp->rx_skbuff[i] = NULL; | |
877 | } | |
878 | /* Mark the last entry as wrapping the ring. */ | |
879 | rp->rx_ring[i-1].next_desc = cpu_to_le32(rp->rx_ring_dma); | |
880 | ||
881 | /* Fill in the Rx buffers. Handle allocation failure gracefully. */ | |
882 | for (i = 0; i < RX_RING_SIZE; i++) { | |
883 | struct sk_buff *skb = dev_alloc_skb(rp->rx_buf_sz); | |
884 | rp->rx_skbuff[i] = skb; | |
885 | if (skb == NULL) | |
886 | break; | |
887 | skb->dev = dev; /* Mark as being used by this device. */ | |
888 | ||
889 | rp->rx_skbuff_dma[i] = | |
689be439 | 890 | pci_map_single(rp->pdev, skb->data, rp->rx_buf_sz, |
1da177e4 LT |
891 | PCI_DMA_FROMDEVICE); |
892 | ||
893 | rp->rx_ring[i].addr = cpu_to_le32(rp->rx_skbuff_dma[i]); | |
894 | rp->rx_ring[i].rx_status = cpu_to_le32(DescOwn); | |
895 | } | |
896 | rp->dirty_rx = (unsigned int)(i - RX_RING_SIZE); | |
897 | } | |
898 | ||
899 | static void free_rbufs(struct net_device* dev) | |
900 | { | |
901 | struct rhine_private *rp = netdev_priv(dev); | |
902 | int i; | |
903 | ||
904 | /* Free all the skbuffs in the Rx queue. */ | |
905 | for (i = 0; i < RX_RING_SIZE; i++) { | |
906 | rp->rx_ring[i].rx_status = 0; | |
907 | rp->rx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */ | |
908 | if (rp->rx_skbuff[i]) { | |
909 | pci_unmap_single(rp->pdev, | |
910 | rp->rx_skbuff_dma[i], | |
911 | rp->rx_buf_sz, PCI_DMA_FROMDEVICE); | |
912 | dev_kfree_skb(rp->rx_skbuff[i]); | |
913 | } | |
914 | rp->rx_skbuff[i] = NULL; | |
915 | } | |
916 | } | |
917 | ||
918 | static void alloc_tbufs(struct net_device* dev) | |
919 | { | |
920 | struct rhine_private *rp = netdev_priv(dev); | |
921 | dma_addr_t next; | |
922 | int i; | |
923 | ||
924 | rp->dirty_tx = rp->cur_tx = 0; | |
925 | next = rp->tx_ring_dma; | |
926 | for (i = 0; i < TX_RING_SIZE; i++) { | |
927 | rp->tx_skbuff[i] = NULL; | |
928 | rp->tx_ring[i].tx_status = 0; | |
929 | rp->tx_ring[i].desc_length = cpu_to_le32(TXDESC); | |
930 | next += sizeof(struct tx_desc); | |
931 | rp->tx_ring[i].next_desc = cpu_to_le32(next); | |
4be5de25 RL |
932 | if (rp->quirks & rqRhineI) |
933 | rp->tx_buf[i] = &rp->tx_bufs[i * PKT_BUF_SZ]; | |
1da177e4 LT |
934 | } |
935 | rp->tx_ring[i-1].next_desc = cpu_to_le32(rp->tx_ring_dma); | |
936 | ||
937 | } | |
938 | ||
939 | static void free_tbufs(struct net_device* dev) | |
940 | { | |
941 | struct rhine_private *rp = netdev_priv(dev); | |
942 | int i; | |
943 | ||
944 | for (i = 0; i < TX_RING_SIZE; i++) { | |
945 | rp->tx_ring[i].tx_status = 0; | |
946 | rp->tx_ring[i].desc_length = cpu_to_le32(TXDESC); | |
947 | rp->tx_ring[i].addr = cpu_to_le32(0xBADF00D0); /* An invalid address. */ | |
948 | if (rp->tx_skbuff[i]) { | |
949 | if (rp->tx_skbuff_dma[i]) { | |
950 | pci_unmap_single(rp->pdev, | |
951 | rp->tx_skbuff_dma[i], | |
952 | rp->tx_skbuff[i]->len, | |
953 | PCI_DMA_TODEVICE); | |
954 | } | |
955 | dev_kfree_skb(rp->tx_skbuff[i]); | |
956 | } | |
957 | rp->tx_skbuff[i] = NULL; | |
958 | rp->tx_buf[i] = NULL; | |
959 | } | |
960 | } | |
961 | ||
962 | static void rhine_check_media(struct net_device *dev, unsigned int init_media) | |
963 | { | |
964 | struct rhine_private *rp = netdev_priv(dev); | |
965 | void __iomem *ioaddr = rp->base; | |
966 | ||
967 | mii_check_media(&rp->mii_if, debug, init_media); | |
968 | ||
969 | if (rp->mii_if.full_duplex) | |
970 | iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1FDuplex, | |
971 | ioaddr + ChipCmd1); | |
972 | else | |
973 | iowrite8(ioread8(ioaddr + ChipCmd1) & ~Cmd1FDuplex, | |
974 | ioaddr + ChipCmd1); | |
00b428c2 RL |
975 | if (debug > 1) |
976 | printk(KERN_INFO "%s: force_media %d, carrier %d\n", dev->name, | |
977 | rp->mii_if.force_media, netif_carrier_ok(dev)); | |
978 | } | |
979 | ||
980 | /* Called after status of force_media possibly changed */ | |
0761be4f | 981 | static void rhine_set_carrier(struct mii_if_info *mii) |
00b428c2 RL |
982 | { |
983 | if (mii->force_media) { | |
984 | /* autoneg is off: Link is always assumed to be up */ | |
985 | if (!netif_carrier_ok(mii->dev)) | |
986 | netif_carrier_on(mii->dev); | |
987 | } | |
988 | else /* Let MMI library update carrier status */ | |
989 | rhine_check_media(mii->dev, 0); | |
990 | if (debug > 1) | |
991 | printk(KERN_INFO "%s: force_media %d, carrier %d\n", | |
992 | mii->dev->name, mii->force_media, | |
993 | netif_carrier_ok(mii->dev)); | |
1da177e4 LT |
994 | } |
995 | ||
996 | static void init_registers(struct net_device *dev) | |
997 | { | |
998 | struct rhine_private *rp = netdev_priv(dev); | |
999 | void __iomem *ioaddr = rp->base; | |
1000 | int i; | |
1001 | ||
1002 | for (i = 0; i < 6; i++) | |
1003 | iowrite8(dev->dev_addr[i], ioaddr + StationAddr + i); | |
1004 | ||
1005 | /* Initialize other registers. */ | |
1006 | iowrite16(0x0006, ioaddr + PCIBusConfig); /* Tune configuration??? */ | |
1007 | /* Configure initial FIFO thresholds. */ | |
1008 | iowrite8(0x20, ioaddr + TxConfig); | |
1009 | rp->tx_thresh = 0x20; | |
1010 | rp->rx_thresh = 0x60; /* Written in rhine_set_rx_mode(). */ | |
1011 | ||
1012 | iowrite32(rp->rx_ring_dma, ioaddr + RxRingPtr); | |
1013 | iowrite32(rp->tx_ring_dma, ioaddr + TxRingPtr); | |
1014 | ||
1015 | rhine_set_rx_mode(dev); | |
1016 | ||
1017 | /* Enable interrupts by setting the interrupt mask. */ | |
1018 | iowrite16(IntrRxDone | IntrRxErr | IntrRxEmpty| IntrRxOverflow | | |
1019 | IntrRxDropped | IntrRxNoBuf | IntrTxAborted | | |
1020 | IntrTxDone | IntrTxError | IntrTxUnderrun | | |
1021 | IntrPCIErr | IntrStatsMax | IntrLinkChange, | |
1022 | ioaddr + IntrEnable); | |
1023 | ||
1024 | iowrite16(CmdStart | CmdTxOn | CmdRxOn | (Cmd1NoTxPoll << 8), | |
1025 | ioaddr + ChipCmd); | |
1026 | rhine_check_media(dev, 1); | |
1027 | } | |
1028 | ||
1029 | /* Enable MII link status auto-polling (required for IntrLinkChange) */ | |
1030 | static void rhine_enable_linkmon(void __iomem *ioaddr) | |
1031 | { | |
1032 | iowrite8(0, ioaddr + MIICmd); | |
1033 | iowrite8(MII_BMSR, ioaddr + MIIRegAddr); | |
1034 | iowrite8(0x80, ioaddr + MIICmd); | |
1035 | ||
1036 | RHINE_WAIT_FOR((ioread8(ioaddr + MIIRegAddr) & 0x20)); | |
1037 | ||
1038 | iowrite8(MII_BMSR | 0x40, ioaddr + MIIRegAddr); | |
1039 | } | |
1040 | ||
1041 | /* Disable MII link status auto-polling (required for MDIO access) */ | |
1042 | static void rhine_disable_linkmon(void __iomem *ioaddr, u32 quirks) | |
1043 | { | |
1044 | iowrite8(0, ioaddr + MIICmd); | |
1045 | ||
1046 | if (quirks & rqRhineI) { | |
1047 | iowrite8(0x01, ioaddr + MIIRegAddr); // MII_BMSR | |
1048 | ||
38bb6b28 JL |
1049 | /* Can be called from ISR. Evil. */ |
1050 | mdelay(1); | |
1da177e4 LT |
1051 | |
1052 | /* 0x80 must be set immediately before turning it off */ | |
1053 | iowrite8(0x80, ioaddr + MIICmd); | |
1054 | ||
1055 | RHINE_WAIT_FOR(ioread8(ioaddr + MIIRegAddr) & 0x20); | |
1056 | ||
1057 | /* Heh. Now clear 0x80 again. */ | |
1058 | iowrite8(0, ioaddr + MIICmd); | |
1059 | } | |
1060 | else | |
1061 | RHINE_WAIT_FOR(ioread8(ioaddr + MIIRegAddr) & 0x80); | |
1062 | } | |
1063 | ||
1064 | /* Read and write over the MII Management Data I/O (MDIO) interface. */ | |
1065 | ||
1066 | static int mdio_read(struct net_device *dev, int phy_id, int regnum) | |
1067 | { | |
1068 | struct rhine_private *rp = netdev_priv(dev); | |
1069 | void __iomem *ioaddr = rp->base; | |
1070 | int result; | |
1071 | ||
1072 | rhine_disable_linkmon(ioaddr, rp->quirks); | |
1073 | ||
1074 | /* rhine_disable_linkmon already cleared MIICmd */ | |
1075 | iowrite8(phy_id, ioaddr + MIIPhyAddr); | |
1076 | iowrite8(regnum, ioaddr + MIIRegAddr); | |
1077 | iowrite8(0x40, ioaddr + MIICmd); /* Trigger read */ | |
1078 | RHINE_WAIT_FOR(!(ioread8(ioaddr + MIICmd) & 0x40)); | |
1079 | result = ioread16(ioaddr + MIIData); | |
1080 | ||
1081 | rhine_enable_linkmon(ioaddr); | |
1082 | return result; | |
1083 | } | |
1084 | ||
1085 | static void mdio_write(struct net_device *dev, int phy_id, int regnum, int value) | |
1086 | { | |
1087 | struct rhine_private *rp = netdev_priv(dev); | |
1088 | void __iomem *ioaddr = rp->base; | |
1089 | ||
1090 | rhine_disable_linkmon(ioaddr, rp->quirks); | |
1091 | ||
1092 | /* rhine_disable_linkmon already cleared MIICmd */ | |
1093 | iowrite8(phy_id, ioaddr + MIIPhyAddr); | |
1094 | iowrite8(regnum, ioaddr + MIIRegAddr); | |
1095 | iowrite16(value, ioaddr + MIIData); | |
1096 | iowrite8(0x20, ioaddr + MIICmd); /* Trigger write */ | |
1097 | RHINE_WAIT_FOR(!(ioread8(ioaddr + MIICmd) & 0x20)); | |
1098 | ||
1099 | rhine_enable_linkmon(ioaddr); | |
1100 | } | |
1101 | ||
1102 | static int rhine_open(struct net_device *dev) | |
1103 | { | |
1104 | struct rhine_private *rp = netdev_priv(dev); | |
1105 | void __iomem *ioaddr = rp->base; | |
1106 | int rc; | |
1107 | ||
1fb9df5d | 1108 | rc = request_irq(rp->pdev->irq, &rhine_interrupt, IRQF_SHARED, dev->name, |
1da177e4 LT |
1109 | dev); |
1110 | if (rc) | |
1111 | return rc; | |
1112 | ||
1113 | if (debug > 1) | |
1114 | printk(KERN_DEBUG "%s: rhine_open() irq %d.\n", | |
1115 | dev->name, rp->pdev->irq); | |
1116 | ||
1117 | rc = alloc_ring(dev); | |
1118 | if (rc) { | |
1119 | free_irq(rp->pdev->irq, dev); | |
1120 | return rc; | |
1121 | } | |
1122 | alloc_rbufs(dev); | |
1123 | alloc_tbufs(dev); | |
1124 | rhine_chip_reset(dev); | |
1125 | init_registers(dev); | |
1126 | if (debug > 2) | |
1127 | printk(KERN_DEBUG "%s: Done rhine_open(), status %4.4x " | |
1128 | "MII status: %4.4x.\n", | |
1129 | dev->name, ioread16(ioaddr + ChipCmd), | |
1130 | mdio_read(dev, rp->mii_if.phy_id, MII_BMSR)); | |
1131 | ||
1132 | netif_start_queue(dev); | |
1133 | ||
1134 | return 0; | |
1135 | } | |
1136 | ||
1137 | static void rhine_tx_timeout(struct net_device *dev) | |
1138 | { | |
1139 | struct rhine_private *rp = netdev_priv(dev); | |
1140 | void __iomem *ioaddr = rp->base; | |
1141 | ||
1142 | printk(KERN_WARNING "%s: Transmit timed out, status %4.4x, PHY status " | |
1143 | "%4.4x, resetting...\n", | |
1144 | dev->name, ioread16(ioaddr + IntrStatus), | |
1145 | mdio_read(dev, rp->mii_if.phy_id, MII_BMSR)); | |
1146 | ||
1147 | /* protect against concurrent rx interrupts */ | |
1148 | disable_irq(rp->pdev->irq); | |
1149 | ||
1150 | spin_lock(&rp->lock); | |
1151 | ||
1152 | /* clear all descriptors */ | |
1153 | free_tbufs(dev); | |
1154 | free_rbufs(dev); | |
1155 | alloc_tbufs(dev); | |
1156 | alloc_rbufs(dev); | |
1157 | ||
1158 | /* Reinitialize the hardware. */ | |
1159 | rhine_chip_reset(dev); | |
1160 | init_registers(dev); | |
1161 | ||
1162 | spin_unlock(&rp->lock); | |
1163 | enable_irq(rp->pdev->irq); | |
1164 | ||
1165 | dev->trans_start = jiffies; | |
1166 | rp->stats.tx_errors++; | |
1167 | netif_wake_queue(dev); | |
1168 | } | |
1169 | ||
1170 | static int rhine_start_tx(struct sk_buff *skb, struct net_device *dev) | |
1171 | { | |
1172 | struct rhine_private *rp = netdev_priv(dev); | |
1173 | void __iomem *ioaddr = rp->base; | |
1174 | unsigned entry; | |
1175 | ||
1176 | /* Caution: the write order is important here, set the field | |
1177 | with the "ownership" bits last. */ | |
1178 | ||
1179 | /* Calculate the next Tx descriptor entry. */ | |
1180 | entry = rp->cur_tx % TX_RING_SIZE; | |
1181 | ||
5b057c6b HX |
1182 | if (skb_padto(skb, ETH_ZLEN)) |
1183 | return 0; | |
1da177e4 LT |
1184 | |
1185 | rp->tx_skbuff[entry] = skb; | |
1186 | ||
1187 | if ((rp->quirks & rqRhineI) && | |
1188 | (((unsigned long)skb->data & 3) || skb_shinfo(skb)->nr_frags != 0 || skb->ip_summed == CHECKSUM_HW)) { | |
1189 | /* Must use alignment buffer. */ | |
1190 | if (skb->len > PKT_BUF_SZ) { | |
1191 | /* packet too long, drop it */ | |
1192 | dev_kfree_skb(skb); | |
1193 | rp->tx_skbuff[entry] = NULL; | |
1194 | rp->stats.tx_dropped++; | |
1195 | return 0; | |
1196 | } | |
3e0d167a CB |
1197 | |
1198 | /* Padding is not copied and so must be redone. */ | |
1da177e4 | 1199 | skb_copy_and_csum_dev(skb, rp->tx_buf[entry]); |
3e0d167a CB |
1200 | if (skb->len < ETH_ZLEN) |
1201 | memset(rp->tx_buf[entry] + skb->len, 0, | |
1202 | ETH_ZLEN - skb->len); | |
1da177e4 LT |
1203 | rp->tx_skbuff_dma[entry] = 0; |
1204 | rp->tx_ring[entry].addr = cpu_to_le32(rp->tx_bufs_dma + | |
1205 | (rp->tx_buf[entry] - | |
1206 | rp->tx_bufs)); | |
1207 | } else { | |
1208 | rp->tx_skbuff_dma[entry] = | |
1209 | pci_map_single(rp->pdev, skb->data, skb->len, | |
1210 | PCI_DMA_TODEVICE); | |
1211 | rp->tx_ring[entry].addr = cpu_to_le32(rp->tx_skbuff_dma[entry]); | |
1212 | } | |
1213 | ||
1214 | rp->tx_ring[entry].desc_length = | |
1215 | cpu_to_le32(TXDESC | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN)); | |
1216 | ||
1217 | /* lock eth irq */ | |
1218 | spin_lock_irq(&rp->lock); | |
1219 | wmb(); | |
1220 | rp->tx_ring[entry].tx_status = cpu_to_le32(DescOwn); | |
1221 | wmb(); | |
1222 | ||
1223 | rp->cur_tx++; | |
1224 | ||
1225 | /* Non-x86 Todo: explicitly flush cache lines here. */ | |
1226 | ||
1227 | /* Wake the potentially-idle transmit channel */ | |
1228 | iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1TxDemand, | |
1229 | ioaddr + ChipCmd1); | |
1230 | IOSYNC; | |
1231 | ||
1232 | if (rp->cur_tx == rp->dirty_tx + TX_QUEUE_LEN) | |
1233 | netif_stop_queue(dev); | |
1234 | ||
1235 | dev->trans_start = jiffies; | |
1236 | ||
1237 | spin_unlock_irq(&rp->lock); | |
1238 | ||
1239 | if (debug > 4) { | |
1240 | printk(KERN_DEBUG "%s: Transmit frame #%d queued in slot %d.\n", | |
1241 | dev->name, rp->cur_tx-1, entry); | |
1242 | } | |
1243 | return 0; | |
1244 | } | |
1245 | ||
1246 | /* The interrupt handler does all of the Rx thread work and cleans up | |
1247 | after the Tx thread. */ | |
1248 | static irqreturn_t rhine_interrupt(int irq, void *dev_instance, struct pt_regs *rgs) | |
1249 | { | |
1250 | struct net_device *dev = dev_instance; | |
1251 | struct rhine_private *rp = netdev_priv(dev); | |
1252 | void __iomem *ioaddr = rp->base; | |
1253 | u32 intr_status; | |
1254 | int boguscnt = max_interrupt_work; | |
1255 | int handled = 0; | |
1256 | ||
1257 | while ((intr_status = get_intr_status(dev))) { | |
1258 | handled = 1; | |
1259 | ||
1260 | /* Acknowledge all of the current interrupt sources ASAP. */ | |
1261 | if (intr_status & IntrTxDescRace) | |
1262 | iowrite8(0x08, ioaddr + IntrStatus2); | |
1263 | iowrite16(intr_status & 0xffff, ioaddr + IntrStatus); | |
1264 | IOSYNC; | |
1265 | ||
1266 | if (debug > 4) | |
1267 | printk(KERN_DEBUG "%s: Interrupt, status %8.8x.\n", | |
1268 | dev->name, intr_status); | |
1269 | ||
1270 | if (intr_status & (IntrRxDone | IntrRxErr | IntrRxDropped | | |
1271 | IntrRxWakeUp | IntrRxEmpty | IntrRxNoBuf)) | |
1272 | rhine_rx(dev); | |
1273 | ||
1274 | if (intr_status & (IntrTxErrSummary | IntrTxDone)) { | |
1275 | if (intr_status & IntrTxErrSummary) { | |
1276 | /* Avoid scavenging before Tx engine turned off */ | |
1277 | RHINE_WAIT_FOR(!(ioread8(ioaddr+ChipCmd) & CmdTxOn)); | |
1278 | if (debug > 2 && | |
1279 | ioread8(ioaddr+ChipCmd) & CmdTxOn) | |
1280 | printk(KERN_WARNING "%s: " | |
1281 | "rhine_interrupt() Tx engine" | |
1282 | "still on.\n", dev->name); | |
1283 | } | |
1284 | rhine_tx(dev); | |
1285 | } | |
1286 | ||
1287 | /* Abnormal error summary/uncommon events handlers. */ | |
1288 | if (intr_status & (IntrPCIErr | IntrLinkChange | | |
1289 | IntrStatsMax | IntrTxError | IntrTxAborted | | |
1290 | IntrTxUnderrun | IntrTxDescRace)) | |
1291 | rhine_error(dev, intr_status); | |
1292 | ||
1293 | if (--boguscnt < 0) { | |
1294 | printk(KERN_WARNING "%s: Too much work at interrupt, " | |
1295 | "status=%#8.8x.\n", | |
1296 | dev->name, intr_status); | |
1297 | break; | |
1298 | } | |
1299 | } | |
1300 | ||
1301 | if (debug > 3) | |
1302 | printk(KERN_DEBUG "%s: exiting interrupt, status=%8.8x.\n", | |
1303 | dev->name, ioread16(ioaddr + IntrStatus)); | |
1304 | return IRQ_RETVAL(handled); | |
1305 | } | |
1306 | ||
1307 | /* This routine is logically part of the interrupt handler, but isolated | |
1308 | for clarity. */ | |
1309 | static void rhine_tx(struct net_device *dev) | |
1310 | { | |
1311 | struct rhine_private *rp = netdev_priv(dev); | |
1312 | int txstatus = 0, entry = rp->dirty_tx % TX_RING_SIZE; | |
1313 | ||
1314 | spin_lock(&rp->lock); | |
1315 | ||
1316 | /* find and cleanup dirty tx descriptors */ | |
1317 | while (rp->dirty_tx != rp->cur_tx) { | |
1318 | txstatus = le32_to_cpu(rp->tx_ring[entry].tx_status); | |
1319 | if (debug > 6) | |
ed4030d1 | 1320 | printk(KERN_DEBUG "Tx scavenge %d status %8.8x.\n", |
1da177e4 LT |
1321 | entry, txstatus); |
1322 | if (txstatus & DescOwn) | |
1323 | break; | |
1324 | if (txstatus & 0x8000) { | |
1325 | if (debug > 1) | |
1326 | printk(KERN_DEBUG "%s: Transmit error, " | |
1327 | "Tx status %8.8x.\n", | |
1328 | dev->name, txstatus); | |
1329 | rp->stats.tx_errors++; | |
1330 | if (txstatus & 0x0400) rp->stats.tx_carrier_errors++; | |
1331 | if (txstatus & 0x0200) rp->stats.tx_window_errors++; | |
1332 | if (txstatus & 0x0100) rp->stats.tx_aborted_errors++; | |
1333 | if (txstatus & 0x0080) rp->stats.tx_heartbeat_errors++; | |
1334 | if (((rp->quirks & rqRhineI) && txstatus & 0x0002) || | |
1335 | (txstatus & 0x0800) || (txstatus & 0x1000)) { | |
1336 | rp->stats.tx_fifo_errors++; | |
1337 | rp->tx_ring[entry].tx_status = cpu_to_le32(DescOwn); | |
1338 | break; /* Keep the skb - we try again */ | |
1339 | } | |
1340 | /* Transmitter restarted in 'abnormal' handler. */ | |
1341 | } else { | |
1342 | if (rp->quirks & rqRhineI) | |
1343 | rp->stats.collisions += (txstatus >> 3) & 0x0F; | |
1344 | else | |
1345 | rp->stats.collisions += txstatus & 0x0F; | |
1346 | if (debug > 6) | |
1347 | printk(KERN_DEBUG "collisions: %1.1x:%1.1x\n", | |
1348 | (txstatus >> 3) & 0xF, | |
1349 | txstatus & 0xF); | |
1350 | rp->stats.tx_bytes += rp->tx_skbuff[entry]->len; | |
1351 | rp->stats.tx_packets++; | |
1352 | } | |
1353 | /* Free the original skb. */ | |
1354 | if (rp->tx_skbuff_dma[entry]) { | |
1355 | pci_unmap_single(rp->pdev, | |
1356 | rp->tx_skbuff_dma[entry], | |
1357 | rp->tx_skbuff[entry]->len, | |
1358 | PCI_DMA_TODEVICE); | |
1359 | } | |
1360 | dev_kfree_skb_irq(rp->tx_skbuff[entry]); | |
1361 | rp->tx_skbuff[entry] = NULL; | |
1362 | entry = (++rp->dirty_tx) % TX_RING_SIZE; | |
1363 | } | |
1364 | if ((rp->cur_tx - rp->dirty_tx) < TX_QUEUE_LEN - 4) | |
1365 | netif_wake_queue(dev); | |
1366 | ||
1367 | spin_unlock(&rp->lock); | |
1368 | } | |
1369 | ||
1370 | /* This routine is logically part of the interrupt handler, but isolated | |
1371 | for clarity and better register allocation. */ | |
1372 | static void rhine_rx(struct net_device *dev) | |
1373 | { | |
1374 | struct rhine_private *rp = netdev_priv(dev); | |
1375 | int entry = rp->cur_rx % RX_RING_SIZE; | |
1376 | int boguscnt = rp->dirty_rx + RX_RING_SIZE - rp->cur_rx; | |
1377 | ||
1378 | if (debug > 4) { | |
1379 | printk(KERN_DEBUG "%s: rhine_rx(), entry %d status %8.8x.\n", | |
1380 | dev->name, entry, | |
1381 | le32_to_cpu(rp->rx_head_desc->rx_status)); | |
1382 | } | |
1383 | ||
1384 | /* If EOP is set on the next entry, it's a new packet. Send it up. */ | |
1385 | while (!(rp->rx_head_desc->rx_status & cpu_to_le32(DescOwn))) { | |
1386 | struct rx_desc *desc = rp->rx_head_desc; | |
1387 | u32 desc_status = le32_to_cpu(desc->rx_status); | |
1388 | int data_size = desc_status >> 16; | |
1389 | ||
1390 | if (debug > 4) | |
ed4030d1 | 1391 | printk(KERN_DEBUG "rhine_rx() status is %8.8x.\n", |
1da177e4 LT |
1392 | desc_status); |
1393 | if (--boguscnt < 0) | |
1394 | break; | |
1395 | if ((desc_status & (RxWholePkt | RxErr)) != RxWholePkt) { | |
1396 | if ((desc_status & RxWholePkt) != RxWholePkt) { | |
1397 | printk(KERN_WARNING "%s: Oversized Ethernet " | |
1398 | "frame spanned multiple buffers, entry " | |
1399 | "%#x length %d status %8.8x!\n", | |
1400 | dev->name, entry, data_size, | |
1401 | desc_status); | |
1402 | printk(KERN_WARNING "%s: Oversized Ethernet " | |
1403 | "frame %p vs %p.\n", dev->name, | |
1404 | rp->rx_head_desc, &rp->rx_ring[entry]); | |
1405 | rp->stats.rx_length_errors++; | |
1406 | } else if (desc_status & RxErr) { | |
1407 | /* There was a error. */ | |
1408 | if (debug > 2) | |
ed4030d1 | 1409 | printk(KERN_DEBUG "rhine_rx() Rx " |
1da177e4 LT |
1410 | "error was %8.8x.\n", |
1411 | desc_status); | |
1412 | rp->stats.rx_errors++; | |
1413 | if (desc_status & 0x0030) rp->stats.rx_length_errors++; | |
1414 | if (desc_status & 0x0048) rp->stats.rx_fifo_errors++; | |
1415 | if (desc_status & 0x0004) rp->stats.rx_frame_errors++; | |
1416 | if (desc_status & 0x0002) { | |
1417 | /* this can also be updated outside the interrupt handler */ | |
1418 | spin_lock(&rp->lock); | |
1419 | rp->stats.rx_crc_errors++; | |
1420 | spin_unlock(&rp->lock); | |
1421 | } | |
1422 | } | |
1423 | } else { | |
1424 | struct sk_buff *skb; | |
1425 | /* Length should omit the CRC */ | |
1426 | int pkt_len = data_size - 4; | |
1427 | ||
1428 | /* Check if the packet is long enough to accept without | |
1429 | copying to a minimally-sized skbuff. */ | |
1430 | if (pkt_len < rx_copybreak && | |
1431 | (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { | |
1432 | skb->dev = dev; | |
1433 | skb_reserve(skb, 2); /* 16 byte align the IP header */ | |
1434 | pci_dma_sync_single_for_cpu(rp->pdev, | |
1435 | rp->rx_skbuff_dma[entry], | |
1436 | rp->rx_buf_sz, | |
1437 | PCI_DMA_FROMDEVICE); | |
1438 | ||
1439 | eth_copy_and_sum(skb, | |
689be439 | 1440 | rp->rx_skbuff[entry]->data, |
1da177e4 LT |
1441 | pkt_len, 0); |
1442 | skb_put(skb, pkt_len); | |
1443 | pci_dma_sync_single_for_device(rp->pdev, | |
1444 | rp->rx_skbuff_dma[entry], | |
1445 | rp->rx_buf_sz, | |
1446 | PCI_DMA_FROMDEVICE); | |
1447 | } else { | |
1448 | skb = rp->rx_skbuff[entry]; | |
1449 | if (skb == NULL) { | |
1450 | printk(KERN_ERR "%s: Inconsistent Rx " | |
1451 | "descriptor chain.\n", | |
1452 | dev->name); | |
1453 | break; | |
1454 | } | |
1455 | rp->rx_skbuff[entry] = NULL; | |
1456 | skb_put(skb, pkt_len); | |
1457 | pci_unmap_single(rp->pdev, | |
1458 | rp->rx_skbuff_dma[entry], | |
1459 | rp->rx_buf_sz, | |
1460 | PCI_DMA_FROMDEVICE); | |
1461 | } | |
1462 | skb->protocol = eth_type_trans(skb, dev); | |
1463 | netif_rx(skb); | |
1464 | dev->last_rx = jiffies; | |
1465 | rp->stats.rx_bytes += pkt_len; | |
1466 | rp->stats.rx_packets++; | |
1467 | } | |
1468 | entry = (++rp->cur_rx) % RX_RING_SIZE; | |
1469 | rp->rx_head_desc = &rp->rx_ring[entry]; | |
1470 | } | |
1471 | ||
1472 | /* Refill the Rx ring buffers. */ | |
1473 | for (; rp->cur_rx - rp->dirty_rx > 0; rp->dirty_rx++) { | |
1474 | struct sk_buff *skb; | |
1475 | entry = rp->dirty_rx % RX_RING_SIZE; | |
1476 | if (rp->rx_skbuff[entry] == NULL) { | |
1477 | skb = dev_alloc_skb(rp->rx_buf_sz); | |
1478 | rp->rx_skbuff[entry] = skb; | |
1479 | if (skb == NULL) | |
1480 | break; /* Better luck next round. */ | |
1481 | skb->dev = dev; /* Mark as being used by this device. */ | |
1482 | rp->rx_skbuff_dma[entry] = | |
689be439 | 1483 | pci_map_single(rp->pdev, skb->data, |
1da177e4 LT |
1484 | rp->rx_buf_sz, |
1485 | PCI_DMA_FROMDEVICE); | |
1486 | rp->rx_ring[entry].addr = cpu_to_le32(rp->rx_skbuff_dma[entry]); | |
1487 | } | |
1488 | rp->rx_ring[entry].rx_status = cpu_to_le32(DescOwn); | |
1489 | } | |
1490 | } | |
1491 | ||
1492 | /* | |
1493 | * Clears the "tally counters" for CRC errors and missed frames(?). | |
1494 | * It has been reported that some chips need a write of 0 to clear | |
1495 | * these, for others the counters are set to 1 when written to and | |
1496 | * instead cleared when read. So we clear them both ways ... | |
1497 | */ | |
1498 | static inline void clear_tally_counters(void __iomem *ioaddr) | |
1499 | { | |
1500 | iowrite32(0, ioaddr + RxMissed); | |
1501 | ioread16(ioaddr + RxCRCErrs); | |
1502 | ioread16(ioaddr + RxMissed); | |
1503 | } | |
1504 | ||
1505 | static void rhine_restart_tx(struct net_device *dev) { | |
1506 | struct rhine_private *rp = netdev_priv(dev); | |
1507 | void __iomem *ioaddr = rp->base; | |
1508 | int entry = rp->dirty_tx % TX_RING_SIZE; | |
1509 | u32 intr_status; | |
1510 | ||
1511 | /* | |
1512 | * If new errors occured, we need to sort them out before doing Tx. | |
1513 | * In that case the ISR will be back here RSN anyway. | |
1514 | */ | |
1515 | intr_status = get_intr_status(dev); | |
1516 | ||
1517 | if ((intr_status & IntrTxErrSummary) == 0) { | |
1518 | ||
1519 | /* We know better than the chip where it should continue. */ | |
1520 | iowrite32(rp->tx_ring_dma + entry * sizeof(struct tx_desc), | |
1521 | ioaddr + TxRingPtr); | |
1522 | ||
1523 | iowrite8(ioread8(ioaddr + ChipCmd) | CmdTxOn, | |
1524 | ioaddr + ChipCmd); | |
1525 | iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1TxDemand, | |
1526 | ioaddr + ChipCmd1); | |
1527 | IOSYNC; | |
1528 | } | |
1529 | else { | |
1530 | /* This should never happen */ | |
1531 | if (debug > 1) | |
1532 | printk(KERN_WARNING "%s: rhine_restart_tx() " | |
1533 | "Another error occured %8.8x.\n", | |
1534 | dev->name, intr_status); | |
1535 | } | |
1536 | ||
1537 | } | |
1538 | ||
1539 | static void rhine_error(struct net_device *dev, int intr_status) | |
1540 | { | |
1541 | struct rhine_private *rp = netdev_priv(dev); | |
1542 | void __iomem *ioaddr = rp->base; | |
1543 | ||
1544 | spin_lock(&rp->lock); | |
1545 | ||
1546 | if (intr_status & IntrLinkChange) | |
38bb6b28 | 1547 | rhine_check_media(dev, 0); |
1da177e4 LT |
1548 | if (intr_status & IntrStatsMax) { |
1549 | rp->stats.rx_crc_errors += ioread16(ioaddr + RxCRCErrs); | |
1550 | rp->stats.rx_missed_errors += ioread16(ioaddr + RxMissed); | |
1551 | clear_tally_counters(ioaddr); | |
1552 | } | |
1553 | if (intr_status & IntrTxAborted) { | |
1554 | if (debug > 1) | |
1555 | printk(KERN_INFO "%s: Abort %8.8x, frame dropped.\n", | |
1556 | dev->name, intr_status); | |
1557 | } | |
1558 | if (intr_status & IntrTxUnderrun) { | |
1559 | if (rp->tx_thresh < 0xE0) | |
1560 | iowrite8(rp->tx_thresh += 0x20, ioaddr + TxConfig); | |
1561 | if (debug > 1) | |
1562 | printk(KERN_INFO "%s: Transmitter underrun, Tx " | |
1563 | "threshold now %2.2x.\n", | |
1564 | dev->name, rp->tx_thresh); | |
1565 | } | |
1566 | if (intr_status & IntrTxDescRace) { | |
1567 | if (debug > 2) | |
1568 | printk(KERN_INFO "%s: Tx descriptor write-back race.\n", | |
1569 | dev->name); | |
1570 | } | |
1571 | if ((intr_status & IntrTxError) && | |
1572 | (intr_status & (IntrTxAborted | | |
1573 | IntrTxUnderrun | IntrTxDescRace)) == 0) { | |
1574 | if (rp->tx_thresh < 0xE0) { | |
1575 | iowrite8(rp->tx_thresh += 0x20, ioaddr + TxConfig); | |
1576 | } | |
1577 | if (debug > 1) | |
1578 | printk(KERN_INFO "%s: Unspecified error. Tx " | |
1579 | "threshold now %2.2x.\n", | |
1580 | dev->name, rp->tx_thresh); | |
1581 | } | |
1582 | if (intr_status & (IntrTxAborted | IntrTxUnderrun | IntrTxDescRace | | |
1583 | IntrTxError)) | |
1584 | rhine_restart_tx(dev); | |
1585 | ||
1586 | if (intr_status & ~(IntrLinkChange | IntrStatsMax | IntrTxUnderrun | | |
1587 | IntrTxError | IntrTxAborted | IntrNormalSummary | | |
1588 | IntrTxDescRace)) { | |
1589 | if (debug > 1) | |
1590 | printk(KERN_ERR "%s: Something Wicked happened! " | |
1591 | "%8.8x.\n", dev->name, intr_status); | |
1592 | } | |
1593 | ||
1594 | spin_unlock(&rp->lock); | |
1595 | } | |
1596 | ||
1597 | static struct net_device_stats *rhine_get_stats(struct net_device *dev) | |
1598 | { | |
1599 | struct rhine_private *rp = netdev_priv(dev); | |
1600 | void __iomem *ioaddr = rp->base; | |
1601 | unsigned long flags; | |
1602 | ||
1603 | spin_lock_irqsave(&rp->lock, flags); | |
1604 | rp->stats.rx_crc_errors += ioread16(ioaddr + RxCRCErrs); | |
1605 | rp->stats.rx_missed_errors += ioread16(ioaddr + RxMissed); | |
1606 | clear_tally_counters(ioaddr); | |
1607 | spin_unlock_irqrestore(&rp->lock, flags); | |
1608 | ||
1609 | return &rp->stats; | |
1610 | } | |
1611 | ||
1612 | static void rhine_set_rx_mode(struct net_device *dev) | |
1613 | { | |
1614 | struct rhine_private *rp = netdev_priv(dev); | |
1615 | void __iomem *ioaddr = rp->base; | |
1616 | u32 mc_filter[2]; /* Multicast hash filter */ | |
1617 | u8 rx_mode; /* Note: 0x02=accept runt, 0x01=accept errs */ | |
1618 | ||
1619 | if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ | |
1620 | /* Unconditionally log net taps. */ | |
1621 | printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", | |
1622 | dev->name); | |
1623 | rx_mode = 0x1C; | |
1624 | iowrite32(0xffffffff, ioaddr + MulticastFilter0); | |
1625 | iowrite32(0xffffffff, ioaddr + MulticastFilter1); | |
1626 | } else if ((dev->mc_count > multicast_filter_limit) | |
1627 | || (dev->flags & IFF_ALLMULTI)) { | |
1628 | /* Too many to match, or accept all multicasts. */ | |
1629 | iowrite32(0xffffffff, ioaddr + MulticastFilter0); | |
1630 | iowrite32(0xffffffff, ioaddr + MulticastFilter1); | |
1631 | rx_mode = 0x0C; | |
1632 | } else { | |
1633 | struct dev_mc_list *mclist; | |
1634 | int i; | |
1635 | memset(mc_filter, 0, sizeof(mc_filter)); | |
1636 | for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; | |
1637 | i++, mclist = mclist->next) { | |
1638 | int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26; | |
1639 | ||
1640 | mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31); | |
1641 | } | |
1642 | iowrite32(mc_filter[0], ioaddr + MulticastFilter0); | |
1643 | iowrite32(mc_filter[1], ioaddr + MulticastFilter1); | |
1644 | rx_mode = 0x0C; | |
1645 | } | |
1646 | iowrite8(rp->rx_thresh | rx_mode, ioaddr + RxConfig); | |
1647 | } | |
1648 | ||
1649 | static void netdev_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) | |
1650 | { | |
1651 | struct rhine_private *rp = netdev_priv(dev); | |
1652 | ||
1653 | strcpy(info->driver, DRV_NAME); | |
1654 | strcpy(info->version, DRV_VERSION); | |
1655 | strcpy(info->bus_info, pci_name(rp->pdev)); | |
1656 | } | |
1657 | ||
1658 | static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1659 | { | |
1660 | struct rhine_private *rp = netdev_priv(dev); | |
1661 | int rc; | |
1662 | ||
1663 | spin_lock_irq(&rp->lock); | |
1664 | rc = mii_ethtool_gset(&rp->mii_if, cmd); | |
1665 | spin_unlock_irq(&rp->lock); | |
1666 | ||
1667 | return rc; | |
1668 | } | |
1669 | ||
1670 | static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1671 | { | |
1672 | struct rhine_private *rp = netdev_priv(dev); | |
1673 | int rc; | |
1674 | ||
1675 | spin_lock_irq(&rp->lock); | |
1676 | rc = mii_ethtool_sset(&rp->mii_if, cmd); | |
1677 | spin_unlock_irq(&rp->lock); | |
00b428c2 | 1678 | rhine_set_carrier(&rp->mii_if); |
1da177e4 LT |
1679 | |
1680 | return rc; | |
1681 | } | |
1682 | ||
1683 | static int netdev_nway_reset(struct net_device *dev) | |
1684 | { | |
1685 | struct rhine_private *rp = netdev_priv(dev); | |
1686 | ||
1687 | return mii_nway_restart(&rp->mii_if); | |
1688 | } | |
1689 | ||
1690 | static u32 netdev_get_link(struct net_device *dev) | |
1691 | { | |
1692 | struct rhine_private *rp = netdev_priv(dev); | |
1693 | ||
1694 | return mii_link_ok(&rp->mii_if); | |
1695 | } | |
1696 | ||
1697 | static u32 netdev_get_msglevel(struct net_device *dev) | |
1698 | { | |
1699 | return debug; | |
1700 | } | |
1701 | ||
1702 | static void netdev_set_msglevel(struct net_device *dev, u32 value) | |
1703 | { | |
1704 | debug = value; | |
1705 | } | |
1706 | ||
1707 | static void rhine_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) | |
1708 | { | |
1709 | struct rhine_private *rp = netdev_priv(dev); | |
1710 | ||
1711 | if (!(rp->quirks & rqWOL)) | |
1712 | return; | |
1713 | ||
1714 | spin_lock_irq(&rp->lock); | |
1715 | wol->supported = WAKE_PHY | WAKE_MAGIC | | |
1716 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST; /* Untested */ | |
1717 | wol->wolopts = rp->wolopts; | |
1718 | spin_unlock_irq(&rp->lock); | |
1719 | } | |
1720 | ||
1721 | static int rhine_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) | |
1722 | { | |
1723 | struct rhine_private *rp = netdev_priv(dev); | |
1724 | u32 support = WAKE_PHY | WAKE_MAGIC | | |
1725 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST; /* Untested */ | |
1726 | ||
1727 | if (!(rp->quirks & rqWOL)) | |
1728 | return -EINVAL; | |
1729 | ||
1730 | if (wol->wolopts & ~support) | |
1731 | return -EINVAL; | |
1732 | ||
1733 | spin_lock_irq(&rp->lock); | |
1734 | rp->wolopts = wol->wolopts; | |
1735 | spin_unlock_irq(&rp->lock); | |
1736 | ||
1737 | return 0; | |
1738 | } | |
1739 | ||
1740 | static struct ethtool_ops netdev_ethtool_ops = { | |
1741 | .get_drvinfo = netdev_get_drvinfo, | |
1742 | .get_settings = netdev_get_settings, | |
1743 | .set_settings = netdev_set_settings, | |
1744 | .nway_reset = netdev_nway_reset, | |
1745 | .get_link = netdev_get_link, | |
1746 | .get_msglevel = netdev_get_msglevel, | |
1747 | .set_msglevel = netdev_set_msglevel, | |
1748 | .get_wol = rhine_get_wol, | |
1749 | .set_wol = rhine_set_wol, | |
1750 | .get_sg = ethtool_op_get_sg, | |
1751 | .get_tx_csum = ethtool_op_get_tx_csum, | |
b81e8e1f | 1752 | .get_perm_addr = ethtool_op_get_perm_addr, |
1da177e4 LT |
1753 | }; |
1754 | ||
1755 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1756 | { | |
1757 | struct rhine_private *rp = netdev_priv(dev); | |
1758 | int rc; | |
1759 | ||
1760 | if (!netif_running(dev)) | |
1761 | return -EINVAL; | |
1762 | ||
1763 | spin_lock_irq(&rp->lock); | |
1764 | rc = generic_mii_ioctl(&rp->mii_if, if_mii(rq), cmd, NULL); | |
1765 | spin_unlock_irq(&rp->lock); | |
00b428c2 | 1766 | rhine_set_carrier(&rp->mii_if); |
1da177e4 LT |
1767 | |
1768 | return rc; | |
1769 | } | |
1770 | ||
1771 | static int rhine_close(struct net_device *dev) | |
1772 | { | |
1773 | struct rhine_private *rp = netdev_priv(dev); | |
1774 | void __iomem *ioaddr = rp->base; | |
1775 | ||
1776 | spin_lock_irq(&rp->lock); | |
1777 | ||
1778 | netif_stop_queue(dev); | |
1779 | ||
1780 | if (debug > 1) | |
1781 | printk(KERN_DEBUG "%s: Shutting down ethercard, " | |
1782 | "status was %4.4x.\n", | |
1783 | dev->name, ioread16(ioaddr + ChipCmd)); | |
1784 | ||
1785 | /* Switch to loopback mode to avoid hardware races. */ | |
1786 | iowrite8(rp->tx_thresh | 0x02, ioaddr + TxConfig); | |
1787 | ||
1788 | /* Disable interrupts by clearing the interrupt mask. */ | |
1789 | iowrite16(0x0000, ioaddr + IntrEnable); | |
1790 | ||
1791 | /* Stop the chip's Tx and Rx processes. */ | |
1792 | iowrite16(CmdStop, ioaddr + ChipCmd); | |
1793 | ||
1794 | spin_unlock_irq(&rp->lock); | |
1795 | ||
1796 | free_irq(rp->pdev->irq, dev); | |
1797 | free_rbufs(dev); | |
1798 | free_tbufs(dev); | |
1799 | free_ring(dev); | |
1800 | ||
1801 | return 0; | |
1802 | } | |
1803 | ||
1804 | ||
1805 | static void __devexit rhine_remove_one(struct pci_dev *pdev) | |
1806 | { | |
1807 | struct net_device *dev = pci_get_drvdata(pdev); | |
1808 | struct rhine_private *rp = netdev_priv(dev); | |
1809 | ||
1810 | unregister_netdev(dev); | |
1811 | ||
1812 | pci_iounmap(pdev, rp->base); | |
1813 | pci_release_regions(pdev); | |
1814 | ||
1815 | free_netdev(dev); | |
1816 | pci_disable_device(pdev); | |
1817 | pci_set_drvdata(pdev, NULL); | |
1818 | } | |
1819 | ||
d18c3db5 | 1820 | static void rhine_shutdown (struct pci_dev *pdev) |
1da177e4 | 1821 | { |
1da177e4 LT |
1822 | struct net_device *dev = pci_get_drvdata(pdev); |
1823 | struct rhine_private *rp = netdev_priv(dev); | |
1824 | void __iomem *ioaddr = rp->base; | |
1825 | ||
1826 | if (!(rp->quirks & rqWOL)) | |
1827 | return; /* Nothing to do for non-WOL adapters */ | |
1828 | ||
1829 | rhine_power_init(dev); | |
1830 | ||
1831 | /* Make sure we use pattern 0, 1 and not 4, 5 */ | |
1832 | if (rp->quirks & rq6patterns) | |
1833 | iowrite8(0x04, ioaddr + 0xA7); | |
1834 | ||
1835 | if (rp->wolopts & WAKE_MAGIC) { | |
1836 | iowrite8(WOLmagic, ioaddr + WOLcrSet); | |
1837 | /* | |
1838 | * Turn EEPROM-controlled wake-up back on -- some hardware may | |
1839 | * not cooperate otherwise. | |
1840 | */ | |
1841 | iowrite8(ioread8(ioaddr + ConfigA) | 0x03, ioaddr + ConfigA); | |
1842 | } | |
1843 | ||
1844 | if (rp->wolopts & (WAKE_BCAST|WAKE_MCAST)) | |
1845 | iowrite8(WOLbmcast, ioaddr + WOLcgSet); | |
1846 | ||
1847 | if (rp->wolopts & WAKE_PHY) | |
1848 | iowrite8(WOLlnkon | WOLlnkoff, ioaddr + WOLcrSet); | |
1849 | ||
1850 | if (rp->wolopts & WAKE_UCAST) | |
1851 | iowrite8(WOLucast, ioaddr + WOLcrSet); | |
1852 | ||
1853 | if (rp->wolopts) { | |
1854 | /* Enable legacy WOL (for old motherboards) */ | |
1855 | iowrite8(0x01, ioaddr + PwcfgSet); | |
1856 | iowrite8(ioread8(ioaddr + StickyHW) | 0x04, ioaddr + StickyHW); | |
1857 | } | |
1858 | ||
1859 | /* Hit power state D3 (sleep) */ | |
1860 | iowrite8(ioread8(ioaddr + StickyHW) | 0x03, ioaddr + StickyHW); | |
1861 | ||
1862 | /* TODO: Check use of pci_enable_wake() */ | |
1863 | ||
1864 | } | |
1865 | ||
1866 | #ifdef CONFIG_PM | |
1867 | static int rhine_suspend(struct pci_dev *pdev, pm_message_t state) | |
1868 | { | |
1869 | struct net_device *dev = pci_get_drvdata(pdev); | |
1870 | struct rhine_private *rp = netdev_priv(dev); | |
1871 | unsigned long flags; | |
1872 | ||
1873 | if (!netif_running(dev)) | |
1874 | return 0; | |
1875 | ||
1876 | netif_device_detach(dev); | |
1877 | pci_save_state(pdev); | |
1878 | ||
1879 | spin_lock_irqsave(&rp->lock, flags); | |
d18c3db5 | 1880 | rhine_shutdown(pdev); |
1da177e4 LT |
1881 | spin_unlock_irqrestore(&rp->lock, flags); |
1882 | ||
1883 | free_irq(dev->irq, dev); | |
1884 | return 0; | |
1885 | } | |
1886 | ||
1887 | static int rhine_resume(struct pci_dev *pdev) | |
1888 | { | |
1889 | struct net_device *dev = pci_get_drvdata(pdev); | |
1890 | struct rhine_private *rp = netdev_priv(dev); | |
1891 | unsigned long flags; | |
1892 | int ret; | |
1893 | ||
1894 | if (!netif_running(dev)) | |
1895 | return 0; | |
1896 | ||
1fb9df5d | 1897 | if (request_irq(dev->irq, rhine_interrupt, IRQF_SHARED, dev->name, dev)) |
1da177e4 LT |
1898 | printk(KERN_ERR "via-rhine %s: request_irq failed\n", dev->name); |
1899 | ||
1900 | ret = pci_set_power_state(pdev, PCI_D0); | |
1901 | if (debug > 1) | |
1902 | printk(KERN_INFO "%s: Entering power state D0 %s (%d).\n", | |
1903 | dev->name, ret ? "failed" : "succeeded", ret); | |
1904 | ||
1905 | pci_restore_state(pdev); | |
1906 | ||
1907 | spin_lock_irqsave(&rp->lock, flags); | |
1908 | #ifdef USE_MMIO | |
1909 | enable_mmio(rp->pioaddr, rp->quirks); | |
1910 | #endif | |
1911 | rhine_power_init(dev); | |
1912 | free_tbufs(dev); | |
1913 | free_rbufs(dev); | |
1914 | alloc_tbufs(dev); | |
1915 | alloc_rbufs(dev); | |
1916 | init_registers(dev); | |
1917 | spin_unlock_irqrestore(&rp->lock, flags); | |
1918 | ||
1919 | netif_device_attach(dev); | |
1920 | ||
1921 | return 0; | |
1922 | } | |
1923 | #endif /* CONFIG_PM */ | |
1924 | ||
1925 | static struct pci_driver rhine_driver = { | |
1926 | .name = DRV_NAME, | |
1927 | .id_table = rhine_pci_tbl, | |
1928 | .probe = rhine_init_one, | |
1929 | .remove = __devexit_p(rhine_remove_one), | |
1930 | #ifdef CONFIG_PM | |
1931 | .suspend = rhine_suspend, | |
1932 | .resume = rhine_resume, | |
1933 | #endif /* CONFIG_PM */ | |
d18c3db5 | 1934 | .shutdown = rhine_shutdown, |
1da177e4 LT |
1935 | }; |
1936 | ||
1937 | ||
1938 | static int __init rhine_init(void) | |
1939 | { | |
1940 | /* when a module, this is printed whether or not devices are found in probe */ | |
1941 | #ifdef MODULE | |
1942 | printk(version); | |
1943 | #endif | |
1944 | return pci_module_init(&rhine_driver); | |
1945 | } | |
1946 | ||
1947 | ||
1948 | static void __exit rhine_cleanup(void) | |
1949 | { | |
1950 | pci_unregister_driver(&rhine_driver); | |
1951 | } | |
1952 | ||
1953 | ||
1954 | module_init(rhine_init); | |
1955 | module_exit(rhine_cleanup); |