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1da177e4 LT |
1 | /* sundance.c: A Linux device driver for the Sundance ST201 "Alta". */ |
2 | /* | |
3 | Written 1999-2000 by Donald Becker. | |
4 | ||
5 | This software may be used and distributed according to the terms of | |
6 | the GNU General Public License (GPL), incorporated herein by reference. | |
7 | Drivers based on or derived from this code fall under the GPL and must | |
8 | retain the authorship, copyright and license notice. This file is not | |
9 | a complete program and may only be used when the entire operating | |
10 | system is licensed under the GPL. | |
11 | ||
12 | The author may be reached as becker@scyld.com, or C/O | |
13 | Scyld Computing Corporation | |
14 | 410 Severn Ave., Suite 210 | |
15 | Annapolis MD 21403 | |
16 | ||
17 | Support and updates available at | |
18 | http://www.scyld.com/network/sundance.html | |
19 | ||
20 | ||
21 | Version LK1.01a (jgarzik): | |
22 | - Replace some MII-related magic numbers with constants | |
23 | ||
24 | Version LK1.02 (D-Link): | |
25 | - Add new board to PCI ID list | |
26 | - Fix multicast bug | |
27 | ||
28 | Version LK1.03 (D-Link): | |
29 | - New Rx scheme, reduce Rx congestion | |
30 | - Option to disable flow control | |
31 | ||
32 | Version LK1.04 (D-Link): | |
33 | - Tx timeout recovery | |
34 | - More support for ethtool. | |
35 | ||
36 | Version LK1.04a: | |
37 | - Remove unused/constant members from struct pci_id_info | |
38 | (which then allows removal of 'drv_flags' from private struct) | |
39 | (jgarzik) | |
40 | - If no phy is found, fail to load that board (jgarzik) | |
41 | - Always start phy id scan at id 1 to avoid problems (Donald Becker) | |
42 | - Autodetect where mii_preable_required is needed, | |
43 | default to not needed. (Donald Becker) | |
44 | ||
45 | Version LK1.04b: | |
46 | - Remove mii_preamble_required module parameter (Donald Becker) | |
47 | - Add per-interface mii_preamble_required (setting is autodetected) | |
48 | (Donald Becker) | |
49 | - Remove unnecessary cast from void pointer (jgarzik) | |
50 | - Re-align comments in private struct (jgarzik) | |
51 | ||
52 | Version LK1.04c (jgarzik): | |
53 | - Support bitmapped message levels (NETIF_MSG_xxx), and the | |
54 | two ethtool ioctls that get/set them | |
55 | - Don't hand-code MII ethtool support, use standard API/lib | |
56 | ||
57 | Version LK1.04d: | |
58 | - Merge from Donald Becker's sundance.c: (Jason Lunz) | |
59 | * proper support for variably-sized MTUs | |
60 | * default to PIO, to fix chip bugs | |
61 | - Add missing unregister_netdev (Jason Lunz) | |
62 | - Add CONFIG_SUNDANCE_MMIO config option (jgarzik) | |
63 | - Better rx buf size calculation (Donald Becker) | |
64 | ||
65 | Version LK1.05 (D-Link): | |
66 | - Fix DFE-580TX packet drop issue (for DL10050C) | |
67 | - Fix reset_tx logic | |
68 | ||
69 | Version LK1.06 (D-Link): | |
70 | - Fix crash while unloading driver | |
71 | ||
72 | Versin LK1.06b (D-Link): | |
73 | - New tx scheme, adaptive tx_coalesce | |
74 | ||
75 | Version LK1.07 (D-Link): | |
76 | - Fix tx bugs in big-endian machines | |
77 | - Remove unused max_interrupt_work module parameter, the new | |
78 | NAPI-like rx scheme doesn't need it. | |
79 | - Remove redundancy get_stats() in intr_handler(), those | |
80 | I/O access could affect performance in ARM-based system | |
81 | - Add Linux software VLAN support | |
82 | ||
b71b95ef | 83 | Version LK1.08 (Philippe De Muyter phdm@macqel.be): |
1da177e4 LT |
84 | - Fix bug of custom mac address |
85 | (StationAddr register only accept word write) | |
86 | ||
87 | Version LK1.09 (D-Link): | |
88 | - Fix the flowctrl bug. | |
89 | - Set Pause bit in MII ANAR if flow control enabled. | |
90 | ||
91 | Version LK1.09a (ICPlus): | |
92 | - Add the delay time in reading the contents of EEPROM | |
93 | ||
b71b95ef PDM |
94 | Version LK1.10 (Philippe De Muyter phdm@macqel.be): |
95 | - Make 'unblock interface after Tx underrun' work | |
96 | ||
1668b19f PALV |
97 | Version LK1.11 (Pedro Alejandro Lopez-Valencia palopezv at gmail.com): |
98 | - Add support for IC Plus Corporation IP100A chipset | |
1da177e4 LT |
99 | */ |
100 | ||
101 | #define DRV_NAME "sundance" | |
1668b19f PALV |
102 | #define DRV_VERSION "1.01+LK1.11" |
103 | #define DRV_RELDATE "14-Jun-2006" | |
1da177e4 LT |
104 | |
105 | ||
106 | /* The user-configurable values. | |
107 | These may be modified when a driver module is loaded.*/ | |
108 | static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ | |
109 | /* Maximum number of multicast addresses to filter (vs. rx-all-multicast). | |
110 | Typical is a 64 element hash table based on the Ethernet CRC. */ | |
f71e1309 | 111 | static const int multicast_filter_limit = 32; |
1da177e4 LT |
112 | |
113 | /* Set the copy breakpoint for the copy-only-tiny-frames scheme. | |
114 | Setting to > 1518 effectively disables this feature. | |
115 | This chip can receive into offset buffers, so the Alpha does not | |
116 | need a copy-align. */ | |
117 | static int rx_copybreak; | |
118 | static int flowctrl=1; | |
119 | ||
120 | /* media[] specifies the media type the NIC operates at. | |
121 | autosense Autosensing active media. | |
122 | 10mbps_hd 10Mbps half duplex. | |
123 | 10mbps_fd 10Mbps full duplex. | |
124 | 100mbps_hd 100Mbps half duplex. | |
125 | 100mbps_fd 100Mbps full duplex. | |
126 | 0 Autosensing active media. | |
127 | 1 10Mbps half duplex. | |
128 | 2 10Mbps full duplex. | |
129 | 3 100Mbps half duplex. | |
130 | 4 100Mbps full duplex. | |
131 | */ | |
132 | #define MAX_UNITS 8 | |
133 | static char *media[MAX_UNITS]; | |
134 | ||
135 | ||
136 | /* Operational parameters that are set at compile time. */ | |
137 | ||
138 | /* Keep the ring sizes a power of two for compile efficiency. | |
139 | The compiler will convert <unsigned>'%'<2^N> into a bit mask. | |
140 | Making the Tx ring too large decreases the effectiveness of channel | |
141 | bonding and packet priority, and more than 128 requires modifying the | |
142 | Tx error recovery. | |
143 | Large receive rings merely waste memory. */ | |
144 | #define TX_RING_SIZE 32 | |
145 | #define TX_QUEUE_LEN (TX_RING_SIZE - 1) /* Limit ring entries actually used. */ | |
146 | #define RX_RING_SIZE 64 | |
147 | #define RX_BUDGET 32 | |
148 | #define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct netdev_desc) | |
149 | #define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct netdev_desc) | |
150 | ||
151 | /* Operational parameters that usually are not changed. */ | |
152 | /* Time in jiffies before concluding the transmitter is hung. */ | |
153 | #define TX_TIMEOUT (4*HZ) | |
154 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ | |
155 | ||
156 | /* Include files, designed to support most kernel versions 2.0.0 and later. */ | |
157 | #include <linux/module.h> | |
158 | #include <linux/kernel.h> | |
159 | #include <linux/string.h> | |
160 | #include <linux/timer.h> | |
161 | #include <linux/errno.h> | |
162 | #include <linux/ioport.h> | |
163 | #include <linux/slab.h> | |
164 | #include <linux/interrupt.h> | |
165 | #include <linux/pci.h> | |
166 | #include <linux/netdevice.h> | |
167 | #include <linux/etherdevice.h> | |
168 | #include <linux/skbuff.h> | |
169 | #include <linux/init.h> | |
170 | #include <linux/bitops.h> | |
171 | #include <asm/uaccess.h> | |
172 | #include <asm/processor.h> /* Processor type for cache alignment. */ | |
173 | #include <asm/io.h> | |
174 | #include <linux/delay.h> | |
175 | #include <linux/spinlock.h> | |
176 | #ifndef _COMPAT_WITH_OLD_KERNEL | |
177 | #include <linux/crc32.h> | |
178 | #include <linux/ethtool.h> | |
179 | #include <linux/mii.h> | |
180 | #else | |
181 | #include "crc32.h" | |
182 | #include "ethtool.h" | |
183 | #include "mii.h" | |
184 | #include "compat.h" | |
185 | #endif | |
186 | ||
187 | /* These identify the driver base version and may not be removed. */ | |
188 | static char version[] __devinitdata = | |
189 | KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " Written by Donald Becker\n" | |
190 | KERN_INFO " http://www.scyld.com/network/sundance.html\n"; | |
191 | ||
192 | MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); | |
193 | MODULE_DESCRIPTION("Sundance Alta Ethernet driver"); | |
194 | MODULE_LICENSE("GPL"); | |
195 | ||
196 | module_param(debug, int, 0); | |
197 | module_param(rx_copybreak, int, 0); | |
198 | module_param_array(media, charp, NULL, 0); | |
199 | module_param(flowctrl, int, 0); | |
200 | MODULE_PARM_DESC(debug, "Sundance Alta debug level (0-5)"); | |
201 | MODULE_PARM_DESC(rx_copybreak, "Sundance Alta copy breakpoint for copy-only-tiny-frames"); | |
202 | MODULE_PARM_DESC(flowctrl, "Sundance Alta flow control [0|1]"); | |
203 | ||
204 | /* | |
205 | Theory of Operation | |
206 | ||
207 | I. Board Compatibility | |
208 | ||
209 | This driver is designed for the Sundance Technologies "Alta" ST201 chip. | |
210 | ||
211 | II. Board-specific settings | |
212 | ||
213 | III. Driver operation | |
214 | ||
215 | IIIa. Ring buffers | |
216 | ||
217 | This driver uses two statically allocated fixed-size descriptor lists | |
218 | formed into rings by a branch from the final descriptor to the beginning of | |
219 | the list. The ring sizes are set at compile time by RX/TX_RING_SIZE. | |
220 | Some chips explicitly use only 2^N sized rings, while others use a | |
221 | 'next descriptor' pointer that the driver forms into rings. | |
222 | ||
223 | IIIb/c. Transmit/Receive Structure | |
224 | ||
225 | This driver uses a zero-copy receive and transmit scheme. | |
226 | The driver allocates full frame size skbuffs for the Rx ring buffers at | |
227 | open() time and passes the skb->data field to the chip as receive data | |
228 | buffers. When an incoming frame is less than RX_COPYBREAK bytes long, | |
229 | a fresh skbuff is allocated and the frame is copied to the new skbuff. | |
230 | When the incoming frame is larger, the skbuff is passed directly up the | |
231 | protocol stack. Buffers consumed this way are replaced by newly allocated | |
232 | skbuffs in a later phase of receives. | |
233 | ||
234 | The RX_COPYBREAK value is chosen to trade-off the memory wasted by | |
235 | using a full-sized skbuff for small frames vs. the copying costs of larger | |
236 | frames. New boards are typically used in generously configured machines | |
237 | and the underfilled buffers have negligible impact compared to the benefit of | |
238 | a single allocation size, so the default value of zero results in never | |
239 | copying packets. When copying is done, the cost is usually mitigated by using | |
240 | a combined copy/checksum routine. Copying also preloads the cache, which is | |
241 | most useful with small frames. | |
242 | ||
243 | A subtle aspect of the operation is that the IP header at offset 14 in an | |
244 | ethernet frame isn't longword aligned for further processing. | |
245 | Unaligned buffers are permitted by the Sundance hardware, so | |
246 | frames are received into the skbuff at an offset of "+2", 16-byte aligning | |
247 | the IP header. | |
248 | ||
249 | IIId. Synchronization | |
250 | ||
251 | The driver runs as two independent, single-threaded flows of control. One | |
252 | is the send-packet routine, which enforces single-threaded use by the | |
253 | dev->tbusy flag. The other thread is the interrupt handler, which is single | |
254 | threaded by the hardware and interrupt handling software. | |
255 | ||
256 | The send packet thread has partial control over the Tx ring and 'dev->tbusy' | |
257 | flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next | |
258 | queue slot is empty, it clears the tbusy flag when finished otherwise it sets | |
259 | the 'lp->tx_full' flag. | |
260 | ||
261 | The interrupt handler has exclusive control over the Rx ring and records stats | |
262 | from the Tx ring. After reaping the stats, it marks the Tx queue entry as | |
263 | empty by incrementing the dirty_tx mark. Iff the 'lp->tx_full' flag is set, it | |
264 | clears both the tx_full and tbusy flags. | |
265 | ||
266 | IV. Notes | |
267 | ||
268 | IVb. References | |
269 | ||
270 | The Sundance ST201 datasheet, preliminary version. | |
b71b95ef PDM |
271 | The Kendin KS8723 datasheet, preliminary version. |
272 | The ICplus IP100 datasheet, preliminary version. | |
273 | http://www.scyld.com/expert/100mbps.html | |
274 | http://www.scyld.com/expert/NWay.html | |
1da177e4 LT |
275 | |
276 | IVc. Errata | |
277 | ||
278 | */ | |
279 | ||
280 | /* Work-around for Kendin chip bugs. */ | |
281 | #ifndef CONFIG_SUNDANCE_MMIO | |
282 | #define USE_IO_OPS 1 | |
283 | #endif | |
284 | ||
285 | static struct pci_device_id sundance_pci_tbl[] = { | |
286 | {0x1186, 0x1002, 0x1186, 0x1002, 0, 0, 0}, | |
287 | {0x1186, 0x1002, 0x1186, 0x1003, 0, 0, 1}, | |
288 | {0x1186, 0x1002, 0x1186, 0x1012, 0, 0, 2}, | |
289 | {0x1186, 0x1002, 0x1186, 0x1040, 0, 0, 3}, | |
290 | {0x1186, 0x1002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4}, | |
291 | {0x13F0, 0x0201, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5}, | |
1668b19f | 292 | {0x13F0, 0x0200, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6}, |
1da177e4 LT |
293 | {0,} |
294 | }; | |
295 | MODULE_DEVICE_TABLE(pci, sundance_pci_tbl); | |
296 | ||
297 | enum { | |
298 | netdev_io_size = 128 | |
299 | }; | |
300 | ||
301 | struct pci_id_info { | |
302 | const char *name; | |
303 | }; | |
f71e1309 | 304 | static const struct pci_id_info pci_id_tbl[] = { |
1da177e4 LT |
305 | {"D-Link DFE-550TX FAST Ethernet Adapter"}, |
306 | {"D-Link DFE-550FX 100Mbps Fiber-optics Adapter"}, | |
307 | {"D-Link DFE-580TX 4 port Server Adapter"}, | |
308 | {"D-Link DFE-530TXS FAST Ethernet Adapter"}, | |
309 | {"D-Link DL10050-based FAST Ethernet Adapter"}, | |
310 | {"Sundance Technology Alta"}, | |
1668b19f | 311 | {"IC Plus Corporation IP100A FAST Ethernet Adapter"}, |
1da177e4 LT |
312 | {NULL,}, /* 0 terminated list. */ |
313 | }; | |
314 | ||
315 | /* This driver was written to use PCI memory space, however x86-oriented | |
316 | hardware often uses I/O space accesses. */ | |
317 | ||
318 | /* Offsets to the device registers. | |
319 | Unlike software-only systems, device drivers interact with complex hardware. | |
320 | It's not useful to define symbolic names for every register bit in the | |
321 | device. The name can only partially document the semantics and make | |
322 | the driver longer and more difficult to read. | |
323 | In general, only the important configuration values or bits changed | |
324 | multiple times should be defined symbolically. | |
325 | */ | |
326 | enum alta_offsets { | |
327 | DMACtrl = 0x00, | |
328 | TxListPtr = 0x04, | |
329 | TxDMABurstThresh = 0x08, | |
330 | TxDMAUrgentThresh = 0x09, | |
331 | TxDMAPollPeriod = 0x0a, | |
332 | RxDMAStatus = 0x0c, | |
333 | RxListPtr = 0x10, | |
334 | DebugCtrl0 = 0x1a, | |
335 | DebugCtrl1 = 0x1c, | |
336 | RxDMABurstThresh = 0x14, | |
337 | RxDMAUrgentThresh = 0x15, | |
338 | RxDMAPollPeriod = 0x16, | |
339 | LEDCtrl = 0x1a, | |
340 | ASICCtrl = 0x30, | |
341 | EEData = 0x34, | |
342 | EECtrl = 0x36, | |
343 | TxStartThresh = 0x3c, | |
344 | RxEarlyThresh = 0x3e, | |
345 | FlashAddr = 0x40, | |
346 | FlashData = 0x44, | |
347 | TxStatus = 0x46, | |
348 | TxFrameId = 0x47, | |
349 | DownCounter = 0x18, | |
350 | IntrClear = 0x4a, | |
351 | IntrEnable = 0x4c, | |
352 | IntrStatus = 0x4e, | |
353 | MACCtrl0 = 0x50, | |
354 | MACCtrl1 = 0x52, | |
355 | StationAddr = 0x54, | |
356 | MaxFrameSize = 0x5A, | |
357 | RxMode = 0x5c, | |
358 | MIICtrl = 0x5e, | |
359 | MulticastFilter0 = 0x60, | |
360 | MulticastFilter1 = 0x64, | |
361 | RxOctetsLow = 0x68, | |
362 | RxOctetsHigh = 0x6a, | |
363 | TxOctetsLow = 0x6c, | |
364 | TxOctetsHigh = 0x6e, | |
365 | TxFramesOK = 0x70, | |
366 | RxFramesOK = 0x72, | |
367 | StatsCarrierError = 0x74, | |
368 | StatsLateColl = 0x75, | |
369 | StatsMultiColl = 0x76, | |
370 | StatsOneColl = 0x77, | |
371 | StatsTxDefer = 0x78, | |
372 | RxMissed = 0x79, | |
373 | StatsTxXSDefer = 0x7a, | |
374 | StatsTxAbort = 0x7b, | |
375 | StatsBcastTx = 0x7c, | |
376 | StatsBcastRx = 0x7d, | |
377 | StatsMcastTx = 0x7e, | |
378 | StatsMcastRx = 0x7f, | |
379 | /* Aliased and bogus values! */ | |
380 | RxStatus = 0x0c, | |
381 | }; | |
382 | enum ASICCtrl_HiWord_bit { | |
383 | GlobalReset = 0x0001, | |
384 | RxReset = 0x0002, | |
385 | TxReset = 0x0004, | |
386 | DMAReset = 0x0008, | |
387 | FIFOReset = 0x0010, | |
388 | NetworkReset = 0x0020, | |
389 | HostReset = 0x0040, | |
390 | ResetBusy = 0x0400, | |
391 | }; | |
392 | ||
393 | /* Bits in the interrupt status/mask registers. */ | |
394 | enum intr_status_bits { | |
395 | IntrSummary=0x0001, IntrPCIErr=0x0002, IntrMACCtrl=0x0008, | |
396 | IntrTxDone=0x0004, IntrRxDone=0x0010, IntrRxStart=0x0020, | |
397 | IntrDrvRqst=0x0040, | |
398 | StatsMax=0x0080, LinkChange=0x0100, | |
399 | IntrTxDMADone=0x0200, IntrRxDMADone=0x0400, | |
400 | }; | |
401 | ||
402 | /* Bits in the RxMode register. */ | |
403 | enum rx_mode_bits { | |
404 | AcceptAllIPMulti=0x20, AcceptMultiHash=0x10, AcceptAll=0x08, | |
405 | AcceptBroadcast=0x04, AcceptMulticast=0x02, AcceptMyPhys=0x01, | |
406 | }; | |
407 | /* Bits in MACCtrl. */ | |
408 | enum mac_ctrl0_bits { | |
409 | EnbFullDuplex=0x20, EnbRcvLargeFrame=0x40, | |
410 | EnbFlowCtrl=0x100, EnbPassRxCRC=0x200, | |
411 | }; | |
412 | enum mac_ctrl1_bits { | |
413 | StatsEnable=0x0020, StatsDisable=0x0040, StatsEnabled=0x0080, | |
414 | TxEnable=0x0100, TxDisable=0x0200, TxEnabled=0x0400, | |
415 | RxEnable=0x0800, RxDisable=0x1000, RxEnabled=0x2000, | |
416 | }; | |
417 | ||
418 | /* The Rx and Tx buffer descriptors. */ | |
419 | /* Note that using only 32 bit fields simplifies conversion to big-endian | |
420 | architectures. */ | |
421 | struct netdev_desc { | |
422 | u32 next_desc; | |
423 | u32 status; | |
424 | struct desc_frag { u32 addr, length; } frag[1]; | |
425 | }; | |
426 | ||
427 | /* Bits in netdev_desc.status */ | |
428 | enum desc_status_bits { | |
429 | DescOwn=0x8000, | |
430 | DescEndPacket=0x4000, | |
431 | DescEndRing=0x2000, | |
432 | LastFrag=0x80000000, | |
433 | DescIntrOnTx=0x8000, | |
434 | DescIntrOnDMADone=0x80000000, | |
435 | DisableAlign = 0x00000001, | |
436 | }; | |
437 | ||
438 | #define PRIV_ALIGN 15 /* Required alignment mask */ | |
439 | /* Use __attribute__((aligned (L1_CACHE_BYTES))) to maintain alignment | |
440 | within the structure. */ | |
441 | #define MII_CNT 4 | |
442 | struct netdev_private { | |
443 | /* Descriptor rings first for alignment. */ | |
444 | struct netdev_desc *rx_ring; | |
445 | struct netdev_desc *tx_ring; | |
446 | struct sk_buff* rx_skbuff[RX_RING_SIZE]; | |
447 | struct sk_buff* tx_skbuff[TX_RING_SIZE]; | |
448 | dma_addr_t tx_ring_dma; | |
449 | dma_addr_t rx_ring_dma; | |
450 | struct net_device_stats stats; | |
451 | struct timer_list timer; /* Media monitoring timer. */ | |
452 | /* Frequently used values: keep some adjacent for cache effect. */ | |
453 | spinlock_t lock; | |
454 | spinlock_t rx_lock; /* Group with Tx control cache line. */ | |
455 | int msg_enable; | |
456 | int chip_id; | |
457 | unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ | |
458 | unsigned int rx_buf_sz; /* Based on MTU+slack. */ | |
459 | struct netdev_desc *last_tx; /* Last Tx descriptor used. */ | |
460 | unsigned int cur_tx, dirty_tx; | |
461 | /* These values are keep track of the transceiver/media in use. */ | |
462 | unsigned int flowctrl:1; | |
463 | unsigned int default_port:4; /* Last dev->if_port value. */ | |
464 | unsigned int an_enable:1; | |
465 | unsigned int speed; | |
466 | struct tasklet_struct rx_tasklet; | |
467 | struct tasklet_struct tx_tasklet; | |
468 | int budget; | |
469 | int cur_task; | |
470 | /* Multicast and receive mode. */ | |
471 | spinlock_t mcastlock; /* SMP lock multicast updates. */ | |
472 | u16 mcast_filter[4]; | |
473 | /* MII transceiver section. */ | |
474 | struct mii_if_info mii_if; | |
475 | int mii_preamble_required; | |
476 | unsigned char phys[MII_CNT]; /* MII device addresses, only first one used. */ | |
477 | struct pci_dev *pci_dev; | |
478 | void __iomem *base; | |
479 | unsigned char pci_rev_id; | |
480 | }; | |
481 | ||
482 | /* The station address location in the EEPROM. */ | |
483 | #define EEPROM_SA_OFFSET 0x10 | |
484 | #define DEFAULT_INTR (IntrRxDMADone | IntrPCIErr | \ | |
485 | IntrDrvRqst | IntrTxDone | StatsMax | \ | |
486 | LinkChange) | |
487 | ||
488 | static int change_mtu(struct net_device *dev, int new_mtu); | |
489 | static int eeprom_read(void __iomem *ioaddr, int location); | |
490 | static int mdio_read(struct net_device *dev, int phy_id, int location); | |
491 | static void mdio_write(struct net_device *dev, int phy_id, int location, int value); | |
492 | static int netdev_open(struct net_device *dev); | |
493 | static void check_duplex(struct net_device *dev); | |
494 | static void netdev_timer(unsigned long data); | |
495 | static void tx_timeout(struct net_device *dev); | |
496 | static void init_ring(struct net_device *dev); | |
497 | static int start_tx(struct sk_buff *skb, struct net_device *dev); | |
498 | static int reset_tx (struct net_device *dev); | |
499 | static irqreturn_t intr_handler(int irq, void *dev_instance, struct pt_regs *regs); | |
500 | static void rx_poll(unsigned long data); | |
501 | static void tx_poll(unsigned long data); | |
502 | static void refill_rx (struct net_device *dev); | |
503 | static void netdev_error(struct net_device *dev, int intr_status); | |
504 | static void netdev_error(struct net_device *dev, int intr_status); | |
505 | static void set_rx_mode(struct net_device *dev); | |
506 | static int __set_mac_addr(struct net_device *dev); | |
507 | static struct net_device_stats *get_stats(struct net_device *dev); | |
508 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
509 | static int netdev_close(struct net_device *dev); | |
510 | static struct ethtool_ops ethtool_ops; | |
511 | ||
b71b95ef PDM |
512 | static void sundance_reset(struct net_device *dev, unsigned long reset_cmd) |
513 | { | |
514 | struct netdev_private *np = netdev_priv(dev); | |
515 | void __iomem *ioaddr = np->base + ASICCtrl; | |
516 | int countdown; | |
517 | ||
518 | /* ST201 documentation states ASICCtrl is a 32bit register */ | |
519 | iowrite32 (reset_cmd | ioread32 (ioaddr), ioaddr); | |
520 | /* ST201 documentation states reset can take up to 1 ms */ | |
521 | countdown = 10 + 1; | |
522 | while (ioread32 (ioaddr) & (ResetBusy << 16)) { | |
523 | if (--countdown == 0) { | |
524 | printk(KERN_WARNING "%s : reset not completed !!\n", dev->name); | |
525 | break; | |
526 | } | |
527 | udelay(100); | |
528 | } | |
529 | } | |
530 | ||
1da177e4 LT |
531 | static int __devinit sundance_probe1 (struct pci_dev *pdev, |
532 | const struct pci_device_id *ent) | |
533 | { | |
534 | struct net_device *dev; | |
535 | struct netdev_private *np; | |
536 | static int card_idx; | |
537 | int chip_idx = ent->driver_data; | |
538 | int irq; | |
539 | int i; | |
540 | void __iomem *ioaddr; | |
541 | u16 mii_ctl; | |
542 | void *ring_space; | |
543 | dma_addr_t ring_dma; | |
544 | #ifdef USE_IO_OPS | |
545 | int bar = 0; | |
546 | #else | |
547 | int bar = 1; | |
548 | #endif | |
67ec2f80 | 549 | int phy, phy_idx = 0; |
1da177e4 LT |
550 | |
551 | ||
552 | /* when built into the kernel, we only print version if device is found */ | |
553 | #ifndef MODULE | |
554 | static int printed_version; | |
555 | if (!printed_version++) | |
556 | printk(version); | |
557 | #endif | |
558 | ||
559 | if (pci_enable_device(pdev)) | |
560 | return -EIO; | |
561 | pci_set_master(pdev); | |
562 | ||
563 | irq = pdev->irq; | |
564 | ||
565 | dev = alloc_etherdev(sizeof(*np)); | |
566 | if (!dev) | |
567 | return -ENOMEM; | |
568 | SET_MODULE_OWNER(dev); | |
569 | SET_NETDEV_DEV(dev, &pdev->dev); | |
570 | ||
571 | if (pci_request_regions(pdev, DRV_NAME)) | |
572 | goto err_out_netdev; | |
573 | ||
574 | ioaddr = pci_iomap(pdev, bar, netdev_io_size); | |
575 | if (!ioaddr) | |
576 | goto err_out_res; | |
577 | ||
578 | for (i = 0; i < 3; i++) | |
579 | ((u16 *)dev->dev_addr)[i] = | |
580 | le16_to_cpu(eeprom_read(ioaddr, i + EEPROM_SA_OFFSET)); | |
30d60a82 | 581 | memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len); |
1da177e4 LT |
582 | |
583 | dev->base_addr = (unsigned long)ioaddr; | |
584 | dev->irq = irq; | |
585 | ||
586 | np = netdev_priv(dev); | |
587 | np->base = ioaddr; | |
588 | np->pci_dev = pdev; | |
589 | np->chip_id = chip_idx; | |
590 | np->msg_enable = (1 << debug) - 1; | |
591 | spin_lock_init(&np->lock); | |
592 | tasklet_init(&np->rx_tasklet, rx_poll, (unsigned long)dev); | |
593 | tasklet_init(&np->tx_tasklet, tx_poll, (unsigned long)dev); | |
594 | ||
595 | ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma); | |
596 | if (!ring_space) | |
597 | goto err_out_cleardev; | |
598 | np->tx_ring = (struct netdev_desc *)ring_space; | |
599 | np->tx_ring_dma = ring_dma; | |
600 | ||
601 | ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma); | |
602 | if (!ring_space) | |
603 | goto err_out_unmap_tx; | |
604 | np->rx_ring = (struct netdev_desc *)ring_space; | |
605 | np->rx_ring_dma = ring_dma; | |
606 | ||
607 | np->mii_if.dev = dev; | |
608 | np->mii_if.mdio_read = mdio_read; | |
609 | np->mii_if.mdio_write = mdio_write; | |
610 | np->mii_if.phy_id_mask = 0x1f; | |
611 | np->mii_if.reg_num_mask = 0x1f; | |
612 | ||
613 | /* The chip-specific entries in the device structure. */ | |
614 | dev->open = &netdev_open; | |
615 | dev->hard_start_xmit = &start_tx; | |
616 | dev->stop = &netdev_close; | |
617 | dev->get_stats = &get_stats; | |
618 | dev->set_multicast_list = &set_rx_mode; | |
619 | dev->do_ioctl = &netdev_ioctl; | |
620 | SET_ETHTOOL_OPS(dev, ðtool_ops); | |
621 | dev->tx_timeout = &tx_timeout; | |
622 | dev->watchdog_timeo = TX_TIMEOUT; | |
623 | dev->change_mtu = &change_mtu; | |
624 | pci_set_drvdata(pdev, dev); | |
625 | ||
626 | pci_read_config_byte(pdev, PCI_REVISION_ID, &np->pci_rev_id); | |
627 | ||
628 | i = register_netdev(dev); | |
629 | if (i) | |
630 | goto err_out_unmap_rx; | |
631 | ||
632 | printk(KERN_INFO "%s: %s at %p, ", | |
633 | dev->name, pci_id_tbl[chip_idx].name, ioaddr); | |
634 | for (i = 0; i < 5; i++) | |
635 | printk("%2.2x:", dev->dev_addr[i]); | |
636 | printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], irq); | |
637 | ||
67ec2f80 JL |
638 | np->phys[0] = 1; /* Default setting */ |
639 | np->mii_preamble_required++; | |
0d615ec2 ACM |
640 | /* |
641 | * It seems some phys doesn't deal well with address 0 being accessed | |
642 | * first, so leave address zero to the end of the loop (32 & 31). | |
643 | */ | |
b06c093e | 644 | for (phy = 1; phy <= 32 && phy_idx < MII_CNT; phy++) { |
b06c093e | 645 | int phyx = phy & 0x1f; |
0d615ec2 | 646 | int mii_status = mdio_read(dev, phyx, MII_BMSR); |
67ec2f80 | 647 | if (mii_status != 0xffff && mii_status != 0x0000) { |
b06c093e JL |
648 | np->phys[phy_idx++] = phyx; |
649 | np->mii_if.advertising = mdio_read(dev, phyx, MII_ADVERTISE); | |
67ec2f80 JL |
650 | if ((mii_status & 0x0040) == 0) |
651 | np->mii_preamble_required++; | |
652 | printk(KERN_INFO "%s: MII PHY found at address %d, status " | |
653 | "0x%4.4x advertising %4.4x.\n", | |
b06c093e | 654 | dev->name, phyx, mii_status, np->mii_if.advertising); |
1da177e4 | 655 | } |
67ec2f80 JL |
656 | } |
657 | np->mii_preamble_required--; | |
1da177e4 | 658 | |
67ec2f80 JL |
659 | if (phy_idx == 0) { |
660 | printk(KERN_INFO "%s: No MII transceiver found, aborting. ASIC status %x\n", | |
661 | dev->name, ioread32(ioaddr + ASICCtrl)); | |
662 | goto err_out_unregister; | |
1da177e4 LT |
663 | } |
664 | ||
67ec2f80 JL |
665 | np->mii_if.phy_id = np->phys[0]; |
666 | ||
1da177e4 LT |
667 | /* Parse override configuration */ |
668 | np->an_enable = 1; | |
669 | if (card_idx < MAX_UNITS) { | |
670 | if (media[card_idx] != NULL) { | |
671 | np->an_enable = 0; | |
672 | if (strcmp (media[card_idx], "100mbps_fd") == 0 || | |
673 | strcmp (media[card_idx], "4") == 0) { | |
674 | np->speed = 100; | |
675 | np->mii_if.full_duplex = 1; | |
676 | } else if (strcmp (media[card_idx], "100mbps_hd") == 0 | |
677 | || strcmp (media[card_idx], "3") == 0) { | |
678 | np->speed = 100; | |
679 | np->mii_if.full_duplex = 0; | |
680 | } else if (strcmp (media[card_idx], "10mbps_fd") == 0 || | |
681 | strcmp (media[card_idx], "2") == 0) { | |
682 | np->speed = 10; | |
683 | np->mii_if.full_duplex = 1; | |
684 | } else if (strcmp (media[card_idx], "10mbps_hd") == 0 || | |
685 | strcmp (media[card_idx], "1") == 0) { | |
686 | np->speed = 10; | |
687 | np->mii_if.full_duplex = 0; | |
688 | } else { | |
689 | np->an_enable = 1; | |
690 | } | |
691 | } | |
692 | if (flowctrl == 1) | |
693 | np->flowctrl = 1; | |
694 | } | |
695 | ||
696 | /* Fibre PHY? */ | |
697 | if (ioread32 (ioaddr + ASICCtrl) & 0x80) { | |
698 | /* Default 100Mbps Full */ | |
699 | if (np->an_enable) { | |
700 | np->speed = 100; | |
701 | np->mii_if.full_duplex = 1; | |
702 | np->an_enable = 0; | |
703 | } | |
704 | } | |
705 | /* Reset PHY */ | |
706 | mdio_write (dev, np->phys[0], MII_BMCR, BMCR_RESET); | |
707 | mdelay (300); | |
708 | /* If flow control enabled, we need to advertise it.*/ | |
709 | if (np->flowctrl) | |
710 | mdio_write (dev, np->phys[0], MII_ADVERTISE, np->mii_if.advertising | 0x0400); | |
711 | mdio_write (dev, np->phys[0], MII_BMCR, BMCR_ANENABLE|BMCR_ANRESTART); | |
712 | /* Force media type */ | |
713 | if (!np->an_enable) { | |
714 | mii_ctl = 0; | |
715 | mii_ctl |= (np->speed == 100) ? BMCR_SPEED100 : 0; | |
716 | mii_ctl |= (np->mii_if.full_duplex) ? BMCR_FULLDPLX : 0; | |
717 | mdio_write (dev, np->phys[0], MII_BMCR, mii_ctl); | |
718 | printk (KERN_INFO "Override speed=%d, %s duplex\n", | |
719 | np->speed, np->mii_if.full_duplex ? "Full" : "Half"); | |
720 | ||
721 | } | |
722 | ||
723 | /* Perhaps move the reset here? */ | |
724 | /* Reset the chip to erase previous misconfiguration. */ | |
725 | if (netif_msg_hw(np)) | |
726 | printk("ASIC Control is %x.\n", ioread32(ioaddr + ASICCtrl)); | |
2aa1d82d | 727 | iowrite16(0x00ff, ioaddr + ASICCtrl + 2); |
1da177e4 LT |
728 | if (netif_msg_hw(np)) |
729 | printk("ASIC Control is now %x.\n", ioread32(ioaddr + ASICCtrl)); | |
730 | ||
731 | card_idx++; | |
732 | return 0; | |
733 | ||
734 | err_out_unregister: | |
735 | unregister_netdev(dev); | |
736 | err_out_unmap_rx: | |
737 | pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma); | |
738 | err_out_unmap_tx: | |
739 | pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma); | |
740 | err_out_cleardev: | |
741 | pci_set_drvdata(pdev, NULL); | |
742 | pci_iounmap(pdev, ioaddr); | |
743 | err_out_res: | |
744 | pci_release_regions(pdev); | |
745 | err_out_netdev: | |
746 | free_netdev (dev); | |
747 | return -ENODEV; | |
748 | } | |
749 | ||
750 | static int change_mtu(struct net_device *dev, int new_mtu) | |
751 | { | |
752 | if ((new_mtu < 68) || (new_mtu > 8191)) /* Set by RxDMAFrameLen */ | |
753 | return -EINVAL; | |
754 | if (netif_running(dev)) | |
755 | return -EBUSY; | |
756 | dev->mtu = new_mtu; | |
757 | return 0; | |
758 | } | |
759 | ||
760 | #define eeprom_delay(ee_addr) ioread32(ee_addr) | |
761 | /* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. */ | |
762 | static int __devinit eeprom_read(void __iomem *ioaddr, int location) | |
763 | { | |
764 | int boguscnt = 10000; /* Typical 1900 ticks. */ | |
765 | iowrite16(0x0200 | (location & 0xff), ioaddr + EECtrl); | |
766 | do { | |
767 | eeprom_delay(ioaddr + EECtrl); | |
768 | if (! (ioread16(ioaddr + EECtrl) & 0x8000)) { | |
769 | return ioread16(ioaddr + EEData); | |
770 | } | |
771 | } while (--boguscnt > 0); | |
772 | return 0; | |
773 | } | |
774 | ||
775 | /* MII transceiver control section. | |
776 | Read and write the MII registers using software-generated serial | |
777 | MDIO protocol. See the MII specifications or DP83840A data sheet | |
778 | for details. | |
779 | ||
780 | The maximum data clock rate is 2.5 Mhz. The minimum timing is usually | |
781 | met by back-to-back 33Mhz PCI cycles. */ | |
782 | #define mdio_delay() ioread8(mdio_addr) | |
783 | ||
784 | enum mii_reg_bits { | |
785 | MDIO_ShiftClk=0x0001, MDIO_Data=0x0002, MDIO_EnbOutput=0x0004, | |
786 | }; | |
787 | #define MDIO_EnbIn (0) | |
788 | #define MDIO_WRITE0 (MDIO_EnbOutput) | |
789 | #define MDIO_WRITE1 (MDIO_Data | MDIO_EnbOutput) | |
790 | ||
791 | /* Generate the preamble required for initial synchronization and | |
792 | a few older transceivers. */ | |
793 | static void mdio_sync(void __iomem *mdio_addr) | |
794 | { | |
795 | int bits = 32; | |
796 | ||
797 | /* Establish sync by sending at least 32 logic ones. */ | |
798 | while (--bits >= 0) { | |
799 | iowrite8(MDIO_WRITE1, mdio_addr); | |
800 | mdio_delay(); | |
801 | iowrite8(MDIO_WRITE1 | MDIO_ShiftClk, mdio_addr); | |
802 | mdio_delay(); | |
803 | } | |
804 | } | |
805 | ||
806 | static int mdio_read(struct net_device *dev, int phy_id, int location) | |
807 | { | |
808 | struct netdev_private *np = netdev_priv(dev); | |
809 | void __iomem *mdio_addr = np->base + MIICtrl; | |
810 | int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location; | |
811 | int i, retval = 0; | |
812 | ||
813 | if (np->mii_preamble_required) | |
814 | mdio_sync(mdio_addr); | |
815 | ||
816 | /* Shift the read command bits out. */ | |
817 | for (i = 15; i >= 0; i--) { | |
818 | int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; | |
819 | ||
820 | iowrite8(dataval, mdio_addr); | |
821 | mdio_delay(); | |
822 | iowrite8(dataval | MDIO_ShiftClk, mdio_addr); | |
823 | mdio_delay(); | |
824 | } | |
825 | /* Read the two transition, 16 data, and wire-idle bits. */ | |
826 | for (i = 19; i > 0; i--) { | |
827 | iowrite8(MDIO_EnbIn, mdio_addr); | |
828 | mdio_delay(); | |
829 | retval = (retval << 1) | ((ioread8(mdio_addr) & MDIO_Data) ? 1 : 0); | |
830 | iowrite8(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); | |
831 | mdio_delay(); | |
832 | } | |
833 | return (retval>>1) & 0xffff; | |
834 | } | |
835 | ||
836 | static void mdio_write(struct net_device *dev, int phy_id, int location, int value) | |
837 | { | |
838 | struct netdev_private *np = netdev_priv(dev); | |
839 | void __iomem *mdio_addr = np->base + MIICtrl; | |
840 | int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) | value; | |
841 | int i; | |
842 | ||
843 | if (np->mii_preamble_required) | |
844 | mdio_sync(mdio_addr); | |
845 | ||
846 | /* Shift the command bits out. */ | |
847 | for (i = 31; i >= 0; i--) { | |
848 | int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; | |
849 | ||
850 | iowrite8(dataval, mdio_addr); | |
851 | mdio_delay(); | |
852 | iowrite8(dataval | MDIO_ShiftClk, mdio_addr); | |
853 | mdio_delay(); | |
854 | } | |
855 | /* Clear out extra bits. */ | |
856 | for (i = 2; i > 0; i--) { | |
857 | iowrite8(MDIO_EnbIn, mdio_addr); | |
858 | mdio_delay(); | |
859 | iowrite8(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); | |
860 | mdio_delay(); | |
861 | } | |
862 | return; | |
863 | } | |
864 | ||
865 | static int netdev_open(struct net_device *dev) | |
866 | { | |
867 | struct netdev_private *np = netdev_priv(dev); | |
868 | void __iomem *ioaddr = np->base; | |
869 | int i; | |
870 | ||
871 | /* Do we need to reset the chip??? */ | |
872 | ||
873 | i = request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev); | |
874 | if (i) | |
875 | return i; | |
876 | ||
877 | if (netif_msg_ifup(np)) | |
878 | printk(KERN_DEBUG "%s: netdev_open() irq %d.\n", | |
879 | dev->name, dev->irq); | |
880 | init_ring(dev); | |
881 | ||
882 | iowrite32(np->rx_ring_dma, ioaddr + RxListPtr); | |
883 | /* The Tx list pointer is written as packets are queued. */ | |
884 | ||
885 | /* Initialize other registers. */ | |
886 | __set_mac_addr(dev); | |
887 | #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) | |
888 | iowrite16(dev->mtu + 18, ioaddr + MaxFrameSize); | |
889 | #else | |
890 | iowrite16(dev->mtu + 14, ioaddr + MaxFrameSize); | |
891 | #endif | |
892 | if (dev->mtu > 2047) | |
893 | iowrite32(ioread32(ioaddr + ASICCtrl) | 0x0C, ioaddr + ASICCtrl); | |
894 | ||
895 | /* Configure the PCI bus bursts and FIFO thresholds. */ | |
896 | ||
897 | if (dev->if_port == 0) | |
898 | dev->if_port = np->default_port; | |
899 | ||
900 | spin_lock_init(&np->mcastlock); | |
901 | ||
902 | set_rx_mode(dev); | |
903 | iowrite16(0, ioaddr + IntrEnable); | |
904 | iowrite16(0, ioaddr + DownCounter); | |
905 | /* Set the chip to poll every N*320nsec. */ | |
906 | iowrite8(100, ioaddr + RxDMAPollPeriod); | |
907 | iowrite8(127, ioaddr + TxDMAPollPeriod); | |
908 | /* Fix DFE-580TX packet drop issue */ | |
909 | if (np->pci_rev_id >= 0x14) | |
910 | iowrite8(0x01, ioaddr + DebugCtrl1); | |
911 | netif_start_queue(dev); | |
912 | ||
913 | iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1); | |
914 | ||
915 | if (netif_msg_ifup(np)) | |
916 | printk(KERN_DEBUG "%s: Done netdev_open(), status: Rx %x Tx %x " | |
917 | "MAC Control %x, %4.4x %4.4x.\n", | |
918 | dev->name, ioread32(ioaddr + RxStatus), ioread8(ioaddr + TxStatus), | |
919 | ioread32(ioaddr + MACCtrl0), | |
920 | ioread16(ioaddr + MACCtrl1), ioread16(ioaddr + MACCtrl0)); | |
921 | ||
922 | /* Set the timer to check for link beat. */ | |
923 | init_timer(&np->timer); | |
924 | np->timer.expires = jiffies + 3*HZ; | |
925 | np->timer.data = (unsigned long)dev; | |
926 | np->timer.function = &netdev_timer; /* timer handler */ | |
927 | add_timer(&np->timer); | |
928 | ||
929 | /* Enable interrupts by setting the interrupt mask. */ | |
930 | iowrite16(DEFAULT_INTR, ioaddr + IntrEnable); | |
931 | ||
932 | return 0; | |
933 | } | |
934 | ||
935 | static void check_duplex(struct net_device *dev) | |
936 | { | |
937 | struct netdev_private *np = netdev_priv(dev); | |
938 | void __iomem *ioaddr = np->base; | |
939 | int mii_lpa = mdio_read(dev, np->phys[0], MII_LPA); | |
940 | int negotiated = mii_lpa & np->mii_if.advertising; | |
941 | int duplex; | |
942 | ||
943 | /* Force media */ | |
944 | if (!np->an_enable || mii_lpa == 0xffff) { | |
945 | if (np->mii_if.full_duplex) | |
946 | iowrite16 (ioread16 (ioaddr + MACCtrl0) | EnbFullDuplex, | |
947 | ioaddr + MACCtrl0); | |
948 | return; | |
949 | } | |
950 | ||
951 | /* Autonegotiation */ | |
952 | duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040; | |
953 | if (np->mii_if.full_duplex != duplex) { | |
954 | np->mii_if.full_duplex = duplex; | |
955 | if (netif_msg_link(np)) | |
956 | printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d " | |
957 | "negotiated capability %4.4x.\n", dev->name, | |
958 | duplex ? "full" : "half", np->phys[0], negotiated); | |
959 | iowrite16(ioread16(ioaddr + MACCtrl0) | duplex ? 0x20 : 0, ioaddr + MACCtrl0); | |
960 | } | |
961 | } | |
962 | ||
963 | static void netdev_timer(unsigned long data) | |
964 | { | |
965 | struct net_device *dev = (struct net_device *)data; | |
966 | struct netdev_private *np = netdev_priv(dev); | |
967 | void __iomem *ioaddr = np->base; | |
968 | int next_tick = 10*HZ; | |
969 | ||
970 | if (netif_msg_timer(np)) { | |
971 | printk(KERN_DEBUG "%s: Media selection timer tick, intr status %4.4x, " | |
972 | "Tx %x Rx %x.\n", | |
973 | dev->name, ioread16(ioaddr + IntrEnable), | |
974 | ioread8(ioaddr + TxStatus), ioread32(ioaddr + RxStatus)); | |
975 | } | |
976 | check_duplex(dev); | |
977 | np->timer.expires = jiffies + next_tick; | |
978 | add_timer(&np->timer); | |
979 | } | |
980 | ||
981 | static void tx_timeout(struct net_device *dev) | |
982 | { | |
983 | struct netdev_private *np = netdev_priv(dev); | |
984 | void __iomem *ioaddr = np->base; | |
985 | unsigned long flag; | |
986 | ||
987 | netif_stop_queue(dev); | |
988 | tasklet_disable(&np->tx_tasklet); | |
989 | iowrite16(0, ioaddr + IntrEnable); | |
990 | printk(KERN_WARNING "%s: Transmit timed out, TxStatus %2.2x " | |
991 | "TxFrameId %2.2x," | |
992 | " resetting...\n", dev->name, ioread8(ioaddr + TxStatus), | |
993 | ioread8(ioaddr + TxFrameId)); | |
994 | ||
995 | { | |
996 | int i; | |
997 | for (i=0; i<TX_RING_SIZE; i++) { | |
998 | printk(KERN_DEBUG "%02x %08llx %08x %08x(%02x) %08x %08x\n", i, | |
999 | (unsigned long long)(np->tx_ring_dma + i*sizeof(*np->tx_ring)), | |
1000 | le32_to_cpu(np->tx_ring[i].next_desc), | |
1001 | le32_to_cpu(np->tx_ring[i].status), | |
1002 | (le32_to_cpu(np->tx_ring[i].status) >> 2) & 0xff, | |
1003 | le32_to_cpu(np->tx_ring[i].frag[0].addr), | |
1004 | le32_to_cpu(np->tx_ring[i].frag[0].length)); | |
1005 | } | |
1006 | printk(KERN_DEBUG "TxListPtr=%08x netif_queue_stopped=%d\n", | |
1007 | ioread32(np->base + TxListPtr), | |
1008 | netif_queue_stopped(dev)); | |
1009 | printk(KERN_DEBUG "cur_tx=%d(%02x) dirty_tx=%d(%02x)\n", | |
1010 | np->cur_tx, np->cur_tx % TX_RING_SIZE, | |
1011 | np->dirty_tx, np->dirty_tx % TX_RING_SIZE); | |
1012 | printk(KERN_DEBUG "cur_rx=%d dirty_rx=%d\n", np->cur_rx, np->dirty_rx); | |
1013 | printk(KERN_DEBUG "cur_task=%d\n", np->cur_task); | |
1014 | } | |
1015 | spin_lock_irqsave(&np->lock, flag); | |
1016 | ||
1017 | /* Stop and restart the chip's Tx processes . */ | |
1018 | reset_tx(dev); | |
1019 | spin_unlock_irqrestore(&np->lock, flag); | |
1020 | ||
1021 | dev->if_port = 0; | |
1022 | ||
1023 | dev->trans_start = jiffies; | |
1024 | np->stats.tx_errors++; | |
1025 | if (np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) { | |
1026 | netif_wake_queue(dev); | |
1027 | } | |
1028 | iowrite16(DEFAULT_INTR, ioaddr + IntrEnable); | |
1029 | tasklet_enable(&np->tx_tasklet); | |
1030 | } | |
1031 | ||
1032 | ||
1033 | /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ | |
1034 | static void init_ring(struct net_device *dev) | |
1035 | { | |
1036 | struct netdev_private *np = netdev_priv(dev); | |
1037 | int i; | |
1038 | ||
1039 | np->cur_rx = np->cur_tx = 0; | |
1040 | np->dirty_rx = np->dirty_tx = 0; | |
1041 | np->cur_task = 0; | |
1042 | ||
1043 | np->rx_buf_sz = (dev->mtu <= 1520 ? PKT_BUF_SZ : dev->mtu + 16); | |
1044 | ||
1045 | /* Initialize all Rx descriptors. */ | |
1046 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1047 | np->rx_ring[i].next_desc = cpu_to_le32(np->rx_ring_dma + | |
1048 | ((i+1)%RX_RING_SIZE)*sizeof(*np->rx_ring)); | |
1049 | np->rx_ring[i].status = 0; | |
1050 | np->rx_ring[i].frag[0].length = 0; | |
1051 | np->rx_skbuff[i] = NULL; | |
1052 | } | |
1053 | ||
1054 | /* Fill in the Rx buffers. Handle allocation failure gracefully. */ | |
1055 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1056 | struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz); | |
1057 | np->rx_skbuff[i] = skb; | |
1058 | if (skb == NULL) | |
1059 | break; | |
1060 | skb->dev = dev; /* Mark as being used by this device. */ | |
1061 | skb_reserve(skb, 2); /* 16 byte align the IP header. */ | |
1062 | np->rx_ring[i].frag[0].addr = cpu_to_le32( | |
689be439 | 1063 | pci_map_single(np->pci_dev, skb->data, np->rx_buf_sz, |
1da177e4 LT |
1064 | PCI_DMA_FROMDEVICE)); |
1065 | np->rx_ring[i].frag[0].length = cpu_to_le32(np->rx_buf_sz | LastFrag); | |
1066 | } | |
1067 | np->dirty_rx = (unsigned int)(i - RX_RING_SIZE); | |
1068 | ||
1069 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1070 | np->tx_skbuff[i] = NULL; | |
1071 | np->tx_ring[i].status = 0; | |
1072 | } | |
1073 | return; | |
1074 | } | |
1075 | ||
1076 | static void tx_poll (unsigned long data) | |
1077 | { | |
1078 | struct net_device *dev = (struct net_device *)data; | |
1079 | struct netdev_private *np = netdev_priv(dev); | |
1080 | unsigned head = np->cur_task % TX_RING_SIZE; | |
1081 | struct netdev_desc *txdesc = | |
1082 | &np->tx_ring[(np->cur_tx - 1) % TX_RING_SIZE]; | |
1083 | ||
1084 | /* Chain the next pointer */ | |
1085 | for (; np->cur_tx - np->cur_task > 0; np->cur_task++) { | |
1086 | int entry = np->cur_task % TX_RING_SIZE; | |
1087 | txdesc = &np->tx_ring[entry]; | |
1088 | if (np->last_tx) { | |
1089 | np->last_tx->next_desc = cpu_to_le32(np->tx_ring_dma + | |
1090 | entry*sizeof(struct netdev_desc)); | |
1091 | } | |
1092 | np->last_tx = txdesc; | |
1093 | } | |
1094 | /* Indicate the latest descriptor of tx ring */ | |
1095 | txdesc->status |= cpu_to_le32(DescIntrOnTx); | |
1096 | ||
1097 | if (ioread32 (np->base + TxListPtr) == 0) | |
1098 | iowrite32 (np->tx_ring_dma + head * sizeof(struct netdev_desc), | |
1099 | np->base + TxListPtr); | |
1100 | return; | |
1101 | } | |
1102 | ||
1103 | static int | |
1104 | start_tx (struct sk_buff *skb, struct net_device *dev) | |
1105 | { | |
1106 | struct netdev_private *np = netdev_priv(dev); | |
1107 | struct netdev_desc *txdesc; | |
1108 | unsigned entry; | |
1109 | ||
1110 | /* Calculate the next Tx descriptor entry. */ | |
1111 | entry = np->cur_tx % TX_RING_SIZE; | |
1112 | np->tx_skbuff[entry] = skb; | |
1113 | txdesc = &np->tx_ring[entry]; | |
1114 | ||
1115 | txdesc->next_desc = 0; | |
1116 | txdesc->status = cpu_to_le32 ((entry << 2) | DisableAlign); | |
1117 | txdesc->frag[0].addr = cpu_to_le32 (pci_map_single (np->pci_dev, skb->data, | |
1118 | skb->len, | |
1119 | PCI_DMA_TODEVICE)); | |
1120 | txdesc->frag[0].length = cpu_to_le32 (skb->len | LastFrag); | |
1121 | ||
1122 | /* Increment cur_tx before tasklet_schedule() */ | |
1123 | np->cur_tx++; | |
1124 | mb(); | |
1125 | /* Schedule a tx_poll() task */ | |
1126 | tasklet_schedule(&np->tx_tasklet); | |
1127 | ||
1128 | /* On some architectures: explicitly flush cache lines here. */ | |
1129 | if (np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 1 | |
1130 | && !netif_queue_stopped(dev)) { | |
1131 | /* do nothing */ | |
1132 | } else { | |
1133 | netif_stop_queue (dev); | |
1134 | } | |
1135 | dev->trans_start = jiffies; | |
1136 | if (netif_msg_tx_queued(np)) { | |
1137 | printk (KERN_DEBUG | |
1138 | "%s: Transmit frame #%d queued in slot %d.\n", | |
1139 | dev->name, np->cur_tx, entry); | |
1140 | } | |
1141 | return 0; | |
1142 | } | |
1143 | ||
1144 | /* Reset hardware tx and free all of tx buffers */ | |
1145 | static int | |
1146 | reset_tx (struct net_device *dev) | |
1147 | { | |
1148 | struct netdev_private *np = netdev_priv(dev); | |
1149 | void __iomem *ioaddr = np->base; | |
1150 | struct sk_buff *skb; | |
1151 | int i; | |
1152 | int irq = in_interrupt(); | |
1153 | ||
1154 | /* Reset tx logic, TxListPtr will be cleaned */ | |
1155 | iowrite16 (TxDisable, ioaddr + MACCtrl1); | |
1156 | iowrite16 (TxReset | DMAReset | FIFOReset | NetworkReset, | |
1157 | ioaddr + ASICCtrl + 2); | |
1158 | for (i=50; i > 0; i--) { | |
1159 | if ((ioread16(ioaddr + ASICCtrl + 2) & ResetBusy) == 0) | |
1160 | break; | |
1161 | mdelay(1); | |
1162 | } | |
1163 | /* free all tx skbuff */ | |
1164 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1165 | skb = np->tx_skbuff[i]; | |
1166 | if (skb) { | |
1167 | pci_unmap_single(np->pci_dev, | |
1168 | np->tx_ring[i].frag[0].addr, skb->len, | |
1169 | PCI_DMA_TODEVICE); | |
1170 | if (irq) | |
1171 | dev_kfree_skb_irq (skb); | |
1172 | else | |
1173 | dev_kfree_skb (skb); | |
1174 | np->tx_skbuff[i] = NULL; | |
1175 | np->stats.tx_dropped++; | |
1176 | } | |
1177 | } | |
1178 | np->cur_tx = np->dirty_tx = 0; | |
1179 | np->cur_task = 0; | |
1180 | iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1); | |
1181 | return 0; | |
1182 | } | |
1183 | ||
1184 | /* The interrupt handler cleans up after the Tx thread, | |
1185 | and schedule a Rx thread work */ | |
1186 | static irqreturn_t intr_handler(int irq, void *dev_instance, struct pt_regs *rgs) | |
1187 | { | |
1188 | struct net_device *dev = (struct net_device *)dev_instance; | |
1189 | struct netdev_private *np = netdev_priv(dev); | |
1190 | void __iomem *ioaddr = np->base; | |
1191 | int hw_frame_id; | |
1192 | int tx_cnt; | |
1193 | int tx_status; | |
1194 | int handled = 0; | |
1195 | ||
1196 | ||
1197 | do { | |
1198 | int intr_status = ioread16(ioaddr + IntrStatus); | |
1199 | iowrite16(intr_status, ioaddr + IntrStatus); | |
1200 | ||
1201 | if (netif_msg_intr(np)) | |
1202 | printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n", | |
1203 | dev->name, intr_status); | |
1204 | ||
1205 | if (!(intr_status & DEFAULT_INTR)) | |
1206 | break; | |
1207 | ||
1208 | handled = 1; | |
1209 | ||
1210 | if (intr_status & (IntrRxDMADone)) { | |
1211 | iowrite16(DEFAULT_INTR & ~(IntrRxDone|IntrRxDMADone), | |
1212 | ioaddr + IntrEnable); | |
1213 | if (np->budget < 0) | |
1214 | np->budget = RX_BUDGET; | |
1215 | tasklet_schedule(&np->rx_tasklet); | |
1216 | } | |
1217 | if (intr_status & (IntrTxDone | IntrDrvRqst)) { | |
1218 | tx_status = ioread16 (ioaddr + TxStatus); | |
1219 | for (tx_cnt=32; tx_status & 0x80; --tx_cnt) { | |
1220 | if (netif_msg_tx_done(np)) | |
1221 | printk | |
1222 | ("%s: Transmit status is %2.2x.\n", | |
1223 | dev->name, tx_status); | |
1224 | if (tx_status & 0x1e) { | |
b71b95ef PDM |
1225 | if (netif_msg_tx_err(np)) |
1226 | printk("%s: Transmit error status %4.4x.\n", | |
1227 | dev->name, tx_status); | |
1da177e4 LT |
1228 | np->stats.tx_errors++; |
1229 | if (tx_status & 0x10) | |
1230 | np->stats.tx_fifo_errors++; | |
1231 | if (tx_status & 0x08) | |
1232 | np->stats.collisions++; | |
b71b95ef PDM |
1233 | if (tx_status & 0x04) |
1234 | np->stats.tx_fifo_errors++; | |
1da177e4 LT |
1235 | if (tx_status & 0x02) |
1236 | np->stats.tx_window_errors++; | |
b71b95ef PDM |
1237 | /* |
1238 | ** This reset has been verified on | |
1239 | ** DFE-580TX boards ! phdm@macqel.be. | |
1240 | */ | |
1241 | if (tx_status & 0x10) { /* TxUnderrun */ | |
1242 | unsigned short txthreshold; | |
1243 | ||
1244 | txthreshold = ioread16 (ioaddr + TxStartThresh); | |
1245 | /* Restart Tx FIFO and transmitter */ | |
1246 | sundance_reset(dev, (NetworkReset|FIFOReset|TxReset) << 16); | |
1247 | iowrite16 (txthreshold, ioaddr + TxStartThresh); | |
1248 | /* No need to reset the Tx pointer here */ | |
1da177e4 | 1249 | } |
b71b95ef PDM |
1250 | /* Restart the Tx. */ |
1251 | iowrite16 (TxEnable, ioaddr + MACCtrl1); | |
1da177e4 LT |
1252 | } |
1253 | /* Yup, this is a documentation bug. It cost me *hours*. */ | |
1254 | iowrite16 (0, ioaddr + TxStatus); | |
1255 | if (tx_cnt < 0) { | |
1256 | iowrite32(5000, ioaddr + DownCounter); | |
1257 | break; | |
1258 | } | |
1259 | tx_status = ioread16 (ioaddr + TxStatus); | |
1260 | } | |
1261 | hw_frame_id = (tx_status >> 8) & 0xff; | |
1262 | } else { | |
1263 | hw_frame_id = ioread8(ioaddr + TxFrameId); | |
1264 | } | |
1265 | ||
1266 | if (np->pci_rev_id >= 0x14) { | |
1267 | spin_lock(&np->lock); | |
1268 | for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) { | |
1269 | int entry = np->dirty_tx % TX_RING_SIZE; | |
1270 | struct sk_buff *skb; | |
1271 | int sw_frame_id; | |
1272 | sw_frame_id = (le32_to_cpu( | |
1273 | np->tx_ring[entry].status) >> 2) & 0xff; | |
1274 | if (sw_frame_id == hw_frame_id && | |
1275 | !(le32_to_cpu(np->tx_ring[entry].status) | |
1276 | & 0x00010000)) | |
1277 | break; | |
1278 | if (sw_frame_id == (hw_frame_id + 1) % | |
1279 | TX_RING_SIZE) | |
1280 | break; | |
1281 | skb = np->tx_skbuff[entry]; | |
1282 | /* Free the original skb. */ | |
1283 | pci_unmap_single(np->pci_dev, | |
1284 | np->tx_ring[entry].frag[0].addr, | |
1285 | skb->len, PCI_DMA_TODEVICE); | |
1286 | dev_kfree_skb_irq (np->tx_skbuff[entry]); | |
1287 | np->tx_skbuff[entry] = NULL; | |
1288 | np->tx_ring[entry].frag[0].addr = 0; | |
1289 | np->tx_ring[entry].frag[0].length = 0; | |
1290 | } | |
1291 | spin_unlock(&np->lock); | |
1292 | } else { | |
1293 | spin_lock(&np->lock); | |
1294 | for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) { | |
1295 | int entry = np->dirty_tx % TX_RING_SIZE; | |
1296 | struct sk_buff *skb; | |
1297 | if (!(le32_to_cpu(np->tx_ring[entry].status) | |
1298 | & 0x00010000)) | |
1299 | break; | |
1300 | skb = np->tx_skbuff[entry]; | |
1301 | /* Free the original skb. */ | |
1302 | pci_unmap_single(np->pci_dev, | |
1303 | np->tx_ring[entry].frag[0].addr, | |
1304 | skb->len, PCI_DMA_TODEVICE); | |
1305 | dev_kfree_skb_irq (np->tx_skbuff[entry]); | |
1306 | np->tx_skbuff[entry] = NULL; | |
1307 | np->tx_ring[entry].frag[0].addr = 0; | |
1308 | np->tx_ring[entry].frag[0].length = 0; | |
1309 | } | |
1310 | spin_unlock(&np->lock); | |
1311 | } | |
1312 | ||
1313 | if (netif_queue_stopped(dev) && | |
1314 | np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) { | |
1315 | /* The ring is no longer full, clear busy flag. */ | |
1316 | netif_wake_queue (dev); | |
1317 | } | |
1318 | /* Abnormal error summary/uncommon events handlers. */ | |
1319 | if (intr_status & (IntrPCIErr | LinkChange | StatsMax)) | |
1320 | netdev_error(dev, intr_status); | |
1321 | } while (0); | |
1322 | if (netif_msg_intr(np)) | |
1323 | printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", | |
1324 | dev->name, ioread16(ioaddr + IntrStatus)); | |
1325 | return IRQ_RETVAL(handled); | |
1326 | } | |
1327 | ||
1328 | static void rx_poll(unsigned long data) | |
1329 | { | |
1330 | struct net_device *dev = (struct net_device *)data; | |
1331 | struct netdev_private *np = netdev_priv(dev); | |
1332 | int entry = np->cur_rx % RX_RING_SIZE; | |
1333 | int boguscnt = np->budget; | |
1334 | void __iomem *ioaddr = np->base; | |
1335 | int received = 0; | |
1336 | ||
1337 | /* If EOP is set on the next entry, it's a new packet. Send it up. */ | |
1338 | while (1) { | |
1339 | struct netdev_desc *desc = &(np->rx_ring[entry]); | |
1340 | u32 frame_status = le32_to_cpu(desc->status); | |
1341 | int pkt_len; | |
1342 | ||
1343 | if (--boguscnt < 0) { | |
1344 | goto not_done; | |
1345 | } | |
1346 | if (!(frame_status & DescOwn)) | |
1347 | break; | |
1348 | pkt_len = frame_status & 0x1fff; /* Chip omits the CRC. */ | |
1349 | if (netif_msg_rx_status(np)) | |
1350 | printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n", | |
1351 | frame_status); | |
1352 | if (frame_status & 0x001f4000) { | |
1353 | /* There was a error. */ | |
1354 | if (netif_msg_rx_err(np)) | |
1355 | printk(KERN_DEBUG " netdev_rx() Rx error was %8.8x.\n", | |
1356 | frame_status); | |
1357 | np->stats.rx_errors++; | |
1358 | if (frame_status & 0x00100000) np->stats.rx_length_errors++; | |
1359 | if (frame_status & 0x00010000) np->stats.rx_fifo_errors++; | |
1360 | if (frame_status & 0x00060000) np->stats.rx_frame_errors++; | |
1361 | if (frame_status & 0x00080000) np->stats.rx_crc_errors++; | |
1362 | if (frame_status & 0x00100000) { | |
1363 | printk(KERN_WARNING "%s: Oversized Ethernet frame," | |
1364 | " status %8.8x.\n", | |
1365 | dev->name, frame_status); | |
1366 | } | |
1367 | } else { | |
1368 | struct sk_buff *skb; | |
1369 | #ifndef final_version | |
1370 | if (netif_msg_rx_status(np)) | |
1371 | printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d" | |
1372 | ", bogus_cnt %d.\n", | |
1373 | pkt_len, boguscnt); | |
1374 | #endif | |
1375 | /* Check if the packet is long enough to accept without copying | |
1376 | to a minimally-sized skbuff. */ | |
1377 | if (pkt_len < rx_copybreak | |
1378 | && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { | |
1379 | skb->dev = dev; | |
1380 | skb_reserve(skb, 2); /* 16 byte align the IP header */ | |
1381 | pci_dma_sync_single_for_cpu(np->pci_dev, | |
1382 | desc->frag[0].addr, | |
1383 | np->rx_buf_sz, | |
1384 | PCI_DMA_FROMDEVICE); | |
1385 | ||
689be439 | 1386 | eth_copy_and_sum(skb, np->rx_skbuff[entry]->data, pkt_len, 0); |
1da177e4 LT |
1387 | pci_dma_sync_single_for_device(np->pci_dev, |
1388 | desc->frag[0].addr, | |
1389 | np->rx_buf_sz, | |
1390 | PCI_DMA_FROMDEVICE); | |
1391 | skb_put(skb, pkt_len); | |
1392 | } else { | |
1393 | pci_unmap_single(np->pci_dev, | |
1394 | desc->frag[0].addr, | |
1395 | np->rx_buf_sz, | |
1396 | PCI_DMA_FROMDEVICE); | |
1397 | skb_put(skb = np->rx_skbuff[entry], pkt_len); | |
1398 | np->rx_skbuff[entry] = NULL; | |
1399 | } | |
1400 | skb->protocol = eth_type_trans(skb, dev); | |
1401 | /* Note: checksum -> skb->ip_summed = CHECKSUM_UNNECESSARY; */ | |
1402 | netif_rx(skb); | |
1403 | dev->last_rx = jiffies; | |
1404 | } | |
1405 | entry = (entry + 1) % RX_RING_SIZE; | |
1406 | received++; | |
1407 | } | |
1408 | np->cur_rx = entry; | |
1409 | refill_rx (dev); | |
1410 | np->budget -= received; | |
1411 | iowrite16(DEFAULT_INTR, ioaddr + IntrEnable); | |
1412 | return; | |
1413 | ||
1414 | not_done: | |
1415 | np->cur_rx = entry; | |
1416 | refill_rx (dev); | |
1417 | if (!received) | |
1418 | received = 1; | |
1419 | np->budget -= received; | |
1420 | if (np->budget <= 0) | |
1421 | np->budget = RX_BUDGET; | |
1422 | tasklet_schedule(&np->rx_tasklet); | |
1423 | return; | |
1424 | } | |
1425 | ||
1426 | static void refill_rx (struct net_device *dev) | |
1427 | { | |
1428 | struct netdev_private *np = netdev_priv(dev); | |
1429 | int entry; | |
1430 | int cnt = 0; | |
1431 | ||
1432 | /* Refill the Rx ring buffers. */ | |
1433 | for (;(np->cur_rx - np->dirty_rx + RX_RING_SIZE) % RX_RING_SIZE > 0; | |
1434 | np->dirty_rx = (np->dirty_rx + 1) % RX_RING_SIZE) { | |
1435 | struct sk_buff *skb; | |
1436 | entry = np->dirty_rx % RX_RING_SIZE; | |
1437 | if (np->rx_skbuff[entry] == NULL) { | |
1438 | skb = dev_alloc_skb(np->rx_buf_sz); | |
1439 | np->rx_skbuff[entry] = skb; | |
1440 | if (skb == NULL) | |
1441 | break; /* Better luck next round. */ | |
1442 | skb->dev = dev; /* Mark as being used by this device. */ | |
1443 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ | |
1444 | np->rx_ring[entry].frag[0].addr = cpu_to_le32( | |
689be439 | 1445 | pci_map_single(np->pci_dev, skb->data, |
1da177e4 LT |
1446 | np->rx_buf_sz, PCI_DMA_FROMDEVICE)); |
1447 | } | |
1448 | /* Perhaps we need not reset this field. */ | |
1449 | np->rx_ring[entry].frag[0].length = | |
1450 | cpu_to_le32(np->rx_buf_sz | LastFrag); | |
1451 | np->rx_ring[entry].status = 0; | |
1452 | cnt++; | |
1453 | } | |
1454 | return; | |
1455 | } | |
1456 | static void netdev_error(struct net_device *dev, int intr_status) | |
1457 | { | |
1458 | struct netdev_private *np = netdev_priv(dev); | |
1459 | void __iomem *ioaddr = np->base; | |
1460 | u16 mii_ctl, mii_advertise, mii_lpa; | |
1461 | int speed; | |
1462 | ||
1463 | if (intr_status & LinkChange) { | |
1464 | if (np->an_enable) { | |
1465 | mii_advertise = mdio_read (dev, np->phys[0], MII_ADVERTISE); | |
1466 | mii_lpa= mdio_read (dev, np->phys[0], MII_LPA); | |
1467 | mii_advertise &= mii_lpa; | |
1468 | printk (KERN_INFO "%s: Link changed: ", dev->name); | |
1469 | if (mii_advertise & ADVERTISE_100FULL) { | |
1470 | np->speed = 100; | |
1471 | printk ("100Mbps, full duplex\n"); | |
1472 | } else if (mii_advertise & ADVERTISE_100HALF) { | |
1473 | np->speed = 100; | |
1474 | printk ("100Mbps, half duplex\n"); | |
1475 | } else if (mii_advertise & ADVERTISE_10FULL) { | |
1476 | np->speed = 10; | |
1477 | printk ("10Mbps, full duplex\n"); | |
1478 | } else if (mii_advertise & ADVERTISE_10HALF) { | |
1479 | np->speed = 10; | |
1480 | printk ("10Mbps, half duplex\n"); | |
1481 | } else | |
1482 | printk ("\n"); | |
1483 | ||
1484 | } else { | |
1485 | mii_ctl = mdio_read (dev, np->phys[0], MII_BMCR); | |
1486 | speed = (mii_ctl & BMCR_SPEED100) ? 100 : 10; | |
1487 | np->speed = speed; | |
1488 | printk (KERN_INFO "%s: Link changed: %dMbps ,", | |
1489 | dev->name, speed); | |
1490 | printk ("%s duplex.\n", (mii_ctl & BMCR_FULLDPLX) ? | |
1491 | "full" : "half"); | |
1492 | } | |
1493 | check_duplex (dev); | |
1494 | if (np->flowctrl && np->mii_if.full_duplex) { | |
1495 | iowrite16(ioread16(ioaddr + MulticastFilter1+2) | 0x0200, | |
1496 | ioaddr + MulticastFilter1+2); | |
1497 | iowrite16(ioread16(ioaddr + MACCtrl0) | EnbFlowCtrl, | |
1498 | ioaddr + MACCtrl0); | |
1499 | } | |
1500 | } | |
1501 | if (intr_status & StatsMax) { | |
1502 | get_stats(dev); | |
1503 | } | |
1504 | if (intr_status & IntrPCIErr) { | |
1505 | printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n", | |
1506 | dev->name, intr_status); | |
1507 | /* We must do a global reset of DMA to continue. */ | |
1508 | } | |
1509 | } | |
1510 | ||
1511 | static struct net_device_stats *get_stats(struct net_device *dev) | |
1512 | { | |
1513 | struct netdev_private *np = netdev_priv(dev); | |
1514 | void __iomem *ioaddr = np->base; | |
1515 | int i; | |
1516 | ||
1517 | /* We should lock this segment of code for SMP eventually, although | |
1518 | the vulnerability window is very small and statistics are | |
1519 | non-critical. */ | |
1520 | /* The chip only need report frame silently dropped. */ | |
1521 | np->stats.rx_missed_errors += ioread8(ioaddr + RxMissed); | |
1522 | np->stats.tx_packets += ioread16(ioaddr + TxFramesOK); | |
1523 | np->stats.rx_packets += ioread16(ioaddr + RxFramesOK); | |
1524 | np->stats.collisions += ioread8(ioaddr + StatsLateColl); | |
1525 | np->stats.collisions += ioread8(ioaddr + StatsMultiColl); | |
1526 | np->stats.collisions += ioread8(ioaddr + StatsOneColl); | |
1527 | np->stats.tx_carrier_errors += ioread8(ioaddr + StatsCarrierError); | |
1528 | ioread8(ioaddr + StatsTxDefer); | |
1529 | for (i = StatsTxDefer; i <= StatsMcastRx; i++) | |
1530 | ioread8(ioaddr + i); | |
1531 | np->stats.tx_bytes += ioread16(ioaddr + TxOctetsLow); | |
1532 | np->stats.tx_bytes += ioread16(ioaddr + TxOctetsHigh) << 16; | |
1533 | np->stats.rx_bytes += ioread16(ioaddr + RxOctetsLow); | |
1534 | np->stats.rx_bytes += ioread16(ioaddr + RxOctetsHigh) << 16; | |
1535 | ||
1536 | return &np->stats; | |
1537 | } | |
1538 | ||
1539 | static void set_rx_mode(struct net_device *dev) | |
1540 | { | |
1541 | struct netdev_private *np = netdev_priv(dev); | |
1542 | void __iomem *ioaddr = np->base; | |
1543 | u16 mc_filter[4]; /* Multicast hash filter */ | |
1544 | u32 rx_mode; | |
1545 | int i; | |
1546 | ||
1547 | if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ | |
1548 | /* Unconditionally log net taps. */ | |
1549 | printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n", dev->name); | |
1550 | memset(mc_filter, 0xff, sizeof(mc_filter)); | |
1551 | rx_mode = AcceptBroadcast | AcceptMulticast | AcceptAll | AcceptMyPhys; | |
1552 | } else if ((dev->mc_count > multicast_filter_limit) | |
1553 | || (dev->flags & IFF_ALLMULTI)) { | |
1554 | /* Too many to match, or accept all multicasts. */ | |
1555 | memset(mc_filter, 0xff, sizeof(mc_filter)); | |
1556 | rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; | |
1557 | } else if (dev->mc_count) { | |
1558 | struct dev_mc_list *mclist; | |
1559 | int bit; | |
1560 | int index; | |
1561 | int crc; | |
1562 | memset (mc_filter, 0, sizeof (mc_filter)); | |
1563 | for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; | |
1564 | i++, mclist = mclist->next) { | |
1565 | crc = ether_crc_le (ETH_ALEN, mclist->dmi_addr); | |
1566 | for (index=0, bit=0; bit < 6; bit++, crc <<= 1) | |
1567 | if (crc & 0x80000000) index |= 1 << bit; | |
1568 | mc_filter[index/16] |= (1 << (index % 16)); | |
1569 | } | |
1570 | rx_mode = AcceptBroadcast | AcceptMultiHash | AcceptMyPhys; | |
1571 | } else { | |
1572 | iowrite8(AcceptBroadcast | AcceptMyPhys, ioaddr + RxMode); | |
1573 | return; | |
1574 | } | |
1575 | if (np->mii_if.full_duplex && np->flowctrl) | |
1576 | mc_filter[3] |= 0x0200; | |
1577 | ||
1578 | for (i = 0; i < 4; i++) | |
1579 | iowrite16(mc_filter[i], ioaddr + MulticastFilter0 + i*2); | |
1580 | iowrite8(rx_mode, ioaddr + RxMode); | |
1581 | } | |
1582 | ||
1583 | static int __set_mac_addr(struct net_device *dev) | |
1584 | { | |
1585 | struct netdev_private *np = netdev_priv(dev); | |
1586 | u16 addr16; | |
1587 | ||
1588 | addr16 = (dev->dev_addr[0] | (dev->dev_addr[1] << 8)); | |
1589 | iowrite16(addr16, np->base + StationAddr); | |
1590 | addr16 = (dev->dev_addr[2] | (dev->dev_addr[3] << 8)); | |
1591 | iowrite16(addr16, np->base + StationAddr+2); | |
1592 | addr16 = (dev->dev_addr[4] | (dev->dev_addr[5] << 8)); | |
1593 | iowrite16(addr16, np->base + StationAddr+4); | |
1594 | return 0; | |
1595 | } | |
1596 | ||
1597 | static int check_if_running(struct net_device *dev) | |
1598 | { | |
1599 | if (!netif_running(dev)) | |
1600 | return -EINVAL; | |
1601 | return 0; | |
1602 | } | |
1603 | ||
1604 | static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) | |
1605 | { | |
1606 | struct netdev_private *np = netdev_priv(dev); | |
1607 | strcpy(info->driver, DRV_NAME); | |
1608 | strcpy(info->version, DRV_VERSION); | |
1609 | strcpy(info->bus_info, pci_name(np->pci_dev)); | |
1610 | } | |
1611 | ||
1612 | static int get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) | |
1613 | { | |
1614 | struct netdev_private *np = netdev_priv(dev); | |
1615 | spin_lock_irq(&np->lock); | |
1616 | mii_ethtool_gset(&np->mii_if, ecmd); | |
1617 | spin_unlock_irq(&np->lock); | |
1618 | return 0; | |
1619 | } | |
1620 | ||
1621 | static int set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) | |
1622 | { | |
1623 | struct netdev_private *np = netdev_priv(dev); | |
1624 | int res; | |
1625 | spin_lock_irq(&np->lock); | |
1626 | res = mii_ethtool_sset(&np->mii_if, ecmd); | |
1627 | spin_unlock_irq(&np->lock); | |
1628 | return res; | |
1629 | } | |
1630 | ||
1631 | static int nway_reset(struct net_device *dev) | |
1632 | { | |
1633 | struct netdev_private *np = netdev_priv(dev); | |
1634 | return mii_nway_restart(&np->mii_if); | |
1635 | } | |
1636 | ||
1637 | static u32 get_link(struct net_device *dev) | |
1638 | { | |
1639 | struct netdev_private *np = netdev_priv(dev); | |
1640 | return mii_link_ok(&np->mii_if); | |
1641 | } | |
1642 | ||
1643 | static u32 get_msglevel(struct net_device *dev) | |
1644 | { | |
1645 | struct netdev_private *np = netdev_priv(dev); | |
1646 | return np->msg_enable; | |
1647 | } | |
1648 | ||
1649 | static void set_msglevel(struct net_device *dev, u32 val) | |
1650 | { | |
1651 | struct netdev_private *np = netdev_priv(dev); | |
1652 | np->msg_enable = val; | |
1653 | } | |
1654 | ||
1655 | static struct ethtool_ops ethtool_ops = { | |
1656 | .begin = check_if_running, | |
1657 | .get_drvinfo = get_drvinfo, | |
1658 | .get_settings = get_settings, | |
1659 | .set_settings = set_settings, | |
1660 | .nway_reset = nway_reset, | |
1661 | .get_link = get_link, | |
1662 | .get_msglevel = get_msglevel, | |
1663 | .set_msglevel = set_msglevel, | |
30d60a82 | 1664 | .get_perm_addr = ethtool_op_get_perm_addr, |
1da177e4 LT |
1665 | }; |
1666 | ||
1667 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1668 | { | |
1669 | struct netdev_private *np = netdev_priv(dev); | |
1670 | void __iomem *ioaddr = np->base; | |
1671 | int rc; | |
1672 | int i; | |
1673 | ||
1674 | if (!netif_running(dev)) | |
1675 | return -EINVAL; | |
1676 | ||
1677 | spin_lock_irq(&np->lock); | |
1678 | rc = generic_mii_ioctl(&np->mii_if, if_mii(rq), cmd, NULL); | |
1679 | spin_unlock_irq(&np->lock); | |
1680 | switch (cmd) { | |
1681 | case SIOCDEVPRIVATE: | |
1682 | for (i=0; i<TX_RING_SIZE; i++) { | |
1683 | printk(KERN_DEBUG "%02x %08llx %08x %08x(%02x) %08x %08x\n", i, | |
1684 | (unsigned long long)(np->tx_ring_dma + i*sizeof(*np->tx_ring)), | |
1685 | le32_to_cpu(np->tx_ring[i].next_desc), | |
1686 | le32_to_cpu(np->tx_ring[i].status), | |
1687 | (le32_to_cpu(np->tx_ring[i].status) >> 2) | |
1688 | & 0xff, | |
1689 | le32_to_cpu(np->tx_ring[i].frag[0].addr), | |
1690 | le32_to_cpu(np->tx_ring[i].frag[0].length)); | |
1691 | } | |
1692 | printk(KERN_DEBUG "TxListPtr=%08x netif_queue_stopped=%d\n", | |
1693 | ioread32(np->base + TxListPtr), | |
1694 | netif_queue_stopped(dev)); | |
1695 | printk(KERN_DEBUG "cur_tx=%d(%02x) dirty_tx=%d(%02x)\n", | |
1696 | np->cur_tx, np->cur_tx % TX_RING_SIZE, | |
1697 | np->dirty_tx, np->dirty_tx % TX_RING_SIZE); | |
1698 | printk(KERN_DEBUG "cur_rx=%d dirty_rx=%d\n", np->cur_rx, np->dirty_rx); | |
1699 | printk(KERN_DEBUG "cur_task=%d\n", np->cur_task); | |
1700 | printk(KERN_DEBUG "TxStatus=%04x\n", ioread16(ioaddr + TxStatus)); | |
1701 | return 0; | |
1702 | } | |
1703 | ||
1704 | ||
1705 | return rc; | |
1706 | } | |
1707 | ||
1708 | static int netdev_close(struct net_device *dev) | |
1709 | { | |
1710 | struct netdev_private *np = netdev_priv(dev); | |
1711 | void __iomem *ioaddr = np->base; | |
1712 | struct sk_buff *skb; | |
1713 | int i; | |
1714 | ||
1715 | netif_stop_queue(dev); | |
1716 | ||
1717 | if (netif_msg_ifdown(np)) { | |
1718 | printk(KERN_DEBUG "%s: Shutting down ethercard, status was Tx %2.2x " | |
1719 | "Rx %4.4x Int %2.2x.\n", | |
1720 | dev->name, ioread8(ioaddr + TxStatus), | |
1721 | ioread32(ioaddr + RxStatus), ioread16(ioaddr + IntrStatus)); | |
1722 | printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", | |
1723 | dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx); | |
1724 | } | |
1725 | ||
1726 | /* Disable interrupts by clearing the interrupt mask. */ | |
1727 | iowrite16(0x0000, ioaddr + IntrEnable); | |
1728 | ||
1729 | /* Stop the chip's Tx and Rx processes. */ | |
1730 | iowrite16(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1); | |
1731 | ||
1732 | /* Wait and kill tasklet */ | |
1733 | tasklet_kill(&np->rx_tasklet); | |
1734 | tasklet_kill(&np->tx_tasklet); | |
1735 | ||
1736 | #ifdef __i386__ | |
1737 | if (netif_msg_hw(np)) { | |
1738 | printk("\n"KERN_DEBUG" Tx ring at %8.8x:\n", | |
1739 | (int)(np->tx_ring_dma)); | |
1740 | for (i = 0; i < TX_RING_SIZE; i++) | |
1741 | printk(" #%d desc. %4.4x %8.8x %8.8x.\n", | |
1742 | i, np->tx_ring[i].status, np->tx_ring[i].frag[0].addr, | |
1743 | np->tx_ring[i].frag[0].length); | |
1744 | printk("\n"KERN_DEBUG " Rx ring %8.8x:\n", | |
1745 | (int)(np->rx_ring_dma)); | |
1746 | for (i = 0; i < /*RX_RING_SIZE*/4 ; i++) { | |
1747 | printk(KERN_DEBUG " #%d desc. %4.4x %4.4x %8.8x\n", | |
1748 | i, np->rx_ring[i].status, np->rx_ring[i].frag[0].addr, | |
1749 | np->rx_ring[i].frag[0].length); | |
1750 | } | |
1751 | } | |
1752 | #endif /* __i386__ debugging only */ | |
1753 | ||
1754 | free_irq(dev->irq, dev); | |
1755 | ||
1756 | del_timer_sync(&np->timer); | |
1757 | ||
1758 | /* Free all the skbuffs in the Rx queue. */ | |
1759 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1760 | np->rx_ring[i].status = 0; | |
1761 | np->rx_ring[i].frag[0].addr = 0xBADF00D0; /* An invalid address. */ | |
1762 | skb = np->rx_skbuff[i]; | |
1763 | if (skb) { | |
1764 | pci_unmap_single(np->pci_dev, | |
1765 | np->rx_ring[i].frag[0].addr, np->rx_buf_sz, | |
1766 | PCI_DMA_FROMDEVICE); | |
1767 | dev_kfree_skb(skb); | |
1768 | np->rx_skbuff[i] = NULL; | |
1769 | } | |
1770 | } | |
1771 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1772 | skb = np->tx_skbuff[i]; | |
1773 | if (skb) { | |
1774 | pci_unmap_single(np->pci_dev, | |
1775 | np->tx_ring[i].frag[0].addr, skb->len, | |
1776 | PCI_DMA_TODEVICE); | |
1777 | dev_kfree_skb(skb); | |
1778 | np->tx_skbuff[i] = NULL; | |
1779 | } | |
1780 | } | |
1781 | ||
1782 | return 0; | |
1783 | } | |
1784 | ||
1785 | static void __devexit sundance_remove1 (struct pci_dev *pdev) | |
1786 | { | |
1787 | struct net_device *dev = pci_get_drvdata(pdev); | |
1788 | ||
1789 | if (dev) { | |
1790 | struct netdev_private *np = netdev_priv(dev); | |
1791 | ||
1792 | unregister_netdev(dev); | |
1793 | pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, | |
1794 | np->rx_ring_dma); | |
1795 | pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, | |
1796 | np->tx_ring_dma); | |
1797 | pci_iounmap(pdev, np->base); | |
1798 | pci_release_regions(pdev); | |
1799 | free_netdev(dev); | |
1800 | pci_set_drvdata(pdev, NULL); | |
1801 | } | |
1802 | } | |
1803 | ||
1804 | static struct pci_driver sundance_driver = { | |
1805 | .name = DRV_NAME, | |
1806 | .id_table = sundance_pci_tbl, | |
1807 | .probe = sundance_probe1, | |
1808 | .remove = __devexit_p(sundance_remove1), | |
1809 | }; | |
1810 | ||
1811 | static int __init sundance_init(void) | |
1812 | { | |
1813 | /* when a module, this is printed whether or not devices are found in probe */ | |
1814 | #ifdef MODULE | |
1815 | printk(version); | |
1816 | #endif | |
1817 | return pci_module_init(&sundance_driver); | |
1818 | } | |
1819 | ||
1820 | static void __exit sundance_exit(void) | |
1821 | { | |
1822 | pci_unregister_driver(&sundance_driver); | |
1823 | } | |
1824 | ||
1825 | module_init(sundance_init); | |
1826 | module_exit(sundance_exit); | |
1827 | ||
1828 |