Commit | Line | Data |
---|---|---|
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 | |
03a8c661 | 19 | [link no longer provides useful info -jgarzik] |
e714d99c PDM |
20 | Archives of the mailing list are still available at |
21 | http://www.beowulf.org/pipermail/netdrivers/ | |
1da177e4 | 22 | |
1da177e4 LT |
23 | */ |
24 | ||
25 | #define DRV_NAME "sundance" | |
d5b20697 AG |
26 | #define DRV_VERSION "1.2" |
27 | #define DRV_RELDATE "11-Sep-2006" | |
1da177e4 LT |
28 | |
29 | ||
30 | /* The user-configurable values. | |
31 | These may be modified when a driver module is loaded.*/ | |
32 | static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ | |
33 | /* Maximum number of multicast addresses to filter (vs. rx-all-multicast). | |
34 | Typical is a 64 element hash table based on the Ethernet CRC. */ | |
f71e1309 | 35 | static const int multicast_filter_limit = 32; |
1da177e4 LT |
36 | |
37 | /* Set the copy breakpoint for the copy-only-tiny-frames scheme. | |
38 | Setting to > 1518 effectively disables this feature. | |
39 | This chip can receive into offset buffers, so the Alpha does not | |
40 | need a copy-align. */ | |
41 | static int rx_copybreak; | |
42 | static int flowctrl=1; | |
43 | ||
44 | /* media[] specifies the media type the NIC operates at. | |
45 | autosense Autosensing active media. | |
46 | 10mbps_hd 10Mbps half duplex. | |
47 | 10mbps_fd 10Mbps full duplex. | |
48 | 100mbps_hd 100Mbps half duplex. | |
49 | 100mbps_fd 100Mbps full duplex. | |
50 | 0 Autosensing active media. | |
51 | 1 10Mbps half duplex. | |
52 | 2 10Mbps full duplex. | |
53 | 3 100Mbps half duplex. | |
54 | 4 100Mbps full duplex. | |
55 | */ | |
56 | #define MAX_UNITS 8 | |
57 | static char *media[MAX_UNITS]; | |
58 | ||
59 | ||
60 | /* Operational parameters that are set at compile time. */ | |
61 | ||
62 | /* Keep the ring sizes a power of two for compile efficiency. | |
63 | The compiler will convert <unsigned>'%'<2^N> into a bit mask. | |
64 | Making the Tx ring too large decreases the effectiveness of channel | |
65 | bonding and packet priority, and more than 128 requires modifying the | |
66 | Tx error recovery. | |
67 | Large receive rings merely waste memory. */ | |
68 | #define TX_RING_SIZE 32 | |
69 | #define TX_QUEUE_LEN (TX_RING_SIZE - 1) /* Limit ring entries actually used. */ | |
70 | #define RX_RING_SIZE 64 | |
71 | #define RX_BUDGET 32 | |
72 | #define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct netdev_desc) | |
73 | #define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct netdev_desc) | |
74 | ||
75 | /* Operational parameters that usually are not changed. */ | |
76 | /* Time in jiffies before concluding the transmitter is hung. */ | |
77 | #define TX_TIMEOUT (4*HZ) | |
78 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ | |
79 | ||
80 | /* Include files, designed to support most kernel versions 2.0.0 and later. */ | |
81 | #include <linux/module.h> | |
82 | #include <linux/kernel.h> | |
83 | #include <linux/string.h> | |
84 | #include <linux/timer.h> | |
85 | #include <linux/errno.h> | |
86 | #include <linux/ioport.h> | |
1da177e4 LT |
87 | #include <linux/interrupt.h> |
88 | #include <linux/pci.h> | |
89 | #include <linux/netdevice.h> | |
90 | #include <linux/etherdevice.h> | |
91 | #include <linux/skbuff.h> | |
92 | #include <linux/init.h> | |
93 | #include <linux/bitops.h> | |
94 | #include <asm/uaccess.h> | |
95 | #include <asm/processor.h> /* Processor type for cache alignment. */ | |
96 | #include <asm/io.h> | |
97 | #include <linux/delay.h> | |
98 | #include <linux/spinlock.h> | |
0c8a745f | 99 | #include <linux/dma-mapping.h> |
1da177e4 LT |
100 | #include <linux/crc32.h> |
101 | #include <linux/ethtool.h> | |
102 | #include <linux/mii.h> | |
1da177e4 LT |
103 | |
104 | /* These identify the driver base version and may not be removed. */ | |
64bc40de | 105 | static const char version[] = |
3af0fe39 SH |
106 | KERN_INFO DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE |
107 | " Written by Donald Becker\n"; | |
1da177e4 LT |
108 | |
109 | MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); | |
110 | MODULE_DESCRIPTION("Sundance Alta Ethernet driver"); | |
111 | MODULE_LICENSE("GPL"); | |
112 | ||
113 | module_param(debug, int, 0); | |
114 | module_param(rx_copybreak, int, 0); | |
115 | module_param_array(media, charp, NULL, 0); | |
116 | module_param(flowctrl, int, 0); | |
117 | MODULE_PARM_DESC(debug, "Sundance Alta debug level (0-5)"); | |
118 | MODULE_PARM_DESC(rx_copybreak, "Sundance Alta copy breakpoint for copy-only-tiny-frames"); | |
119 | MODULE_PARM_DESC(flowctrl, "Sundance Alta flow control [0|1]"); | |
120 | ||
121 | /* | |
122 | Theory of Operation | |
123 | ||
124 | I. Board Compatibility | |
125 | ||
126 | This driver is designed for the Sundance Technologies "Alta" ST201 chip. | |
127 | ||
128 | II. Board-specific settings | |
129 | ||
130 | III. Driver operation | |
131 | ||
132 | IIIa. Ring buffers | |
133 | ||
134 | This driver uses two statically allocated fixed-size descriptor lists | |
135 | formed into rings by a branch from the final descriptor to the beginning of | |
136 | the list. The ring sizes are set at compile time by RX/TX_RING_SIZE. | |
137 | Some chips explicitly use only 2^N sized rings, while others use a | |
138 | 'next descriptor' pointer that the driver forms into rings. | |
139 | ||
140 | IIIb/c. Transmit/Receive Structure | |
141 | ||
142 | This driver uses a zero-copy receive and transmit scheme. | |
143 | The driver allocates full frame size skbuffs for the Rx ring buffers at | |
144 | open() time and passes the skb->data field to the chip as receive data | |
145 | buffers. When an incoming frame is less than RX_COPYBREAK bytes long, | |
146 | a fresh skbuff is allocated and the frame is copied to the new skbuff. | |
147 | When the incoming frame is larger, the skbuff is passed directly up the | |
148 | protocol stack. Buffers consumed this way are replaced by newly allocated | |
149 | skbuffs in a later phase of receives. | |
150 | ||
151 | The RX_COPYBREAK value is chosen to trade-off the memory wasted by | |
152 | using a full-sized skbuff for small frames vs. the copying costs of larger | |
153 | frames. New boards are typically used in generously configured machines | |
154 | and the underfilled buffers have negligible impact compared to the benefit of | |
155 | a single allocation size, so the default value of zero results in never | |
156 | copying packets. When copying is done, the cost is usually mitigated by using | |
157 | a combined copy/checksum routine. Copying also preloads the cache, which is | |
158 | most useful with small frames. | |
159 | ||
160 | A subtle aspect of the operation is that the IP header at offset 14 in an | |
161 | ethernet frame isn't longword aligned for further processing. | |
162 | Unaligned buffers are permitted by the Sundance hardware, so | |
163 | frames are received into the skbuff at an offset of "+2", 16-byte aligning | |
164 | the IP header. | |
165 | ||
166 | IIId. Synchronization | |
167 | ||
168 | The driver runs as two independent, single-threaded flows of control. One | |
169 | is the send-packet routine, which enforces single-threaded use by the | |
170 | dev->tbusy flag. The other thread is the interrupt handler, which is single | |
171 | threaded by the hardware and interrupt handling software. | |
172 | ||
173 | The send packet thread has partial control over the Tx ring and 'dev->tbusy' | |
174 | flag. It sets the tbusy flag whenever it's queuing a Tx packet. If the next | |
175 | queue slot is empty, it clears the tbusy flag when finished otherwise it sets | |
176 | the 'lp->tx_full' flag. | |
177 | ||
178 | The interrupt handler has exclusive control over the Rx ring and records stats | |
179 | from the Tx ring. After reaping the stats, it marks the Tx queue entry as | |
180 | empty by incrementing the dirty_tx mark. Iff the 'lp->tx_full' flag is set, it | |
181 | clears both the tx_full and tbusy flags. | |
182 | ||
183 | IV. Notes | |
184 | ||
185 | IVb. References | |
186 | ||
187 | The Sundance ST201 datasheet, preliminary version. | |
b71b95ef PDM |
188 | The Kendin KS8723 datasheet, preliminary version. |
189 | The ICplus IP100 datasheet, preliminary version. | |
190 | http://www.scyld.com/expert/100mbps.html | |
191 | http://www.scyld.com/expert/NWay.html | |
1da177e4 LT |
192 | |
193 | IVc. Errata | |
194 | ||
195 | */ | |
196 | ||
197 | /* Work-around for Kendin chip bugs. */ | |
198 | #ifndef CONFIG_SUNDANCE_MMIO | |
199 | #define USE_IO_OPS 1 | |
200 | #endif | |
201 | ||
a3aa1884 | 202 | static DEFINE_PCI_DEVICE_TABLE(sundance_pci_tbl) = { |
46009c8b JG |
203 | { 0x1186, 0x1002, 0x1186, 0x1002, 0, 0, 0 }, |
204 | { 0x1186, 0x1002, 0x1186, 0x1003, 0, 0, 1 }, | |
205 | { 0x1186, 0x1002, 0x1186, 0x1012, 0, 0, 2 }, | |
206 | { 0x1186, 0x1002, 0x1186, 0x1040, 0, 0, 3 }, | |
207 | { 0x1186, 0x1002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 }, | |
208 | { 0x13F0, 0x0201, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 }, | |
209 | { 0x13F0, 0x0200, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 }, | |
210 | { } | |
1da177e4 LT |
211 | }; |
212 | MODULE_DEVICE_TABLE(pci, sundance_pci_tbl); | |
213 | ||
214 | enum { | |
215 | netdev_io_size = 128 | |
216 | }; | |
217 | ||
218 | struct pci_id_info { | |
219 | const char *name; | |
220 | }; | |
64bc40de | 221 | static const struct pci_id_info pci_id_tbl[] = { |
1da177e4 LT |
222 | {"D-Link DFE-550TX FAST Ethernet Adapter"}, |
223 | {"D-Link DFE-550FX 100Mbps Fiber-optics Adapter"}, | |
224 | {"D-Link DFE-580TX 4 port Server Adapter"}, | |
225 | {"D-Link DFE-530TXS FAST Ethernet Adapter"}, | |
226 | {"D-Link DL10050-based FAST Ethernet Adapter"}, | |
227 | {"Sundance Technology Alta"}, | |
1668b19f | 228 | {"IC Plus Corporation IP100A FAST Ethernet Adapter"}, |
46009c8b | 229 | { } /* terminate list. */ |
1da177e4 LT |
230 | }; |
231 | ||
232 | /* This driver was written to use PCI memory space, however x86-oriented | |
233 | hardware often uses I/O space accesses. */ | |
234 | ||
235 | /* Offsets to the device registers. | |
236 | Unlike software-only systems, device drivers interact with complex hardware. | |
237 | It's not useful to define symbolic names for every register bit in the | |
238 | device. The name can only partially document the semantics and make | |
239 | the driver longer and more difficult to read. | |
240 | In general, only the important configuration values or bits changed | |
241 | multiple times should be defined symbolically. | |
242 | */ | |
243 | enum alta_offsets { | |
244 | DMACtrl = 0x00, | |
245 | TxListPtr = 0x04, | |
246 | TxDMABurstThresh = 0x08, | |
247 | TxDMAUrgentThresh = 0x09, | |
248 | TxDMAPollPeriod = 0x0a, | |
249 | RxDMAStatus = 0x0c, | |
250 | RxListPtr = 0x10, | |
251 | DebugCtrl0 = 0x1a, | |
252 | DebugCtrl1 = 0x1c, | |
253 | RxDMABurstThresh = 0x14, | |
254 | RxDMAUrgentThresh = 0x15, | |
255 | RxDMAPollPeriod = 0x16, | |
256 | LEDCtrl = 0x1a, | |
257 | ASICCtrl = 0x30, | |
258 | EEData = 0x34, | |
259 | EECtrl = 0x36, | |
1da177e4 LT |
260 | FlashAddr = 0x40, |
261 | FlashData = 0x44, | |
f210e87b | 262 | WakeEvent = 0x45, |
1da177e4 LT |
263 | TxStatus = 0x46, |
264 | TxFrameId = 0x47, | |
265 | DownCounter = 0x18, | |
266 | IntrClear = 0x4a, | |
267 | IntrEnable = 0x4c, | |
268 | IntrStatus = 0x4e, | |
269 | MACCtrl0 = 0x50, | |
270 | MACCtrl1 = 0x52, | |
271 | StationAddr = 0x54, | |
272 | MaxFrameSize = 0x5A, | |
273 | RxMode = 0x5c, | |
274 | MIICtrl = 0x5e, | |
275 | MulticastFilter0 = 0x60, | |
276 | MulticastFilter1 = 0x64, | |
277 | RxOctetsLow = 0x68, | |
278 | RxOctetsHigh = 0x6a, | |
279 | TxOctetsLow = 0x6c, | |
280 | TxOctetsHigh = 0x6e, | |
281 | TxFramesOK = 0x70, | |
282 | RxFramesOK = 0x72, | |
283 | StatsCarrierError = 0x74, | |
284 | StatsLateColl = 0x75, | |
285 | StatsMultiColl = 0x76, | |
286 | StatsOneColl = 0x77, | |
287 | StatsTxDefer = 0x78, | |
288 | RxMissed = 0x79, | |
289 | StatsTxXSDefer = 0x7a, | |
290 | StatsTxAbort = 0x7b, | |
291 | StatsBcastTx = 0x7c, | |
292 | StatsBcastRx = 0x7d, | |
293 | StatsMcastTx = 0x7e, | |
294 | StatsMcastRx = 0x7f, | |
295 | /* Aliased and bogus values! */ | |
296 | RxStatus = 0x0c, | |
297 | }; | |
24de5285 DK |
298 | |
299 | #define ASIC_HI_WORD(x) ((x) + 2) | |
300 | ||
1da177e4 LT |
301 | enum ASICCtrl_HiWord_bit { |
302 | GlobalReset = 0x0001, | |
303 | RxReset = 0x0002, | |
304 | TxReset = 0x0004, | |
305 | DMAReset = 0x0008, | |
306 | FIFOReset = 0x0010, | |
307 | NetworkReset = 0x0020, | |
308 | HostReset = 0x0040, | |
309 | ResetBusy = 0x0400, | |
310 | }; | |
311 | ||
312 | /* Bits in the interrupt status/mask registers. */ | |
313 | enum intr_status_bits { | |
314 | IntrSummary=0x0001, IntrPCIErr=0x0002, IntrMACCtrl=0x0008, | |
315 | IntrTxDone=0x0004, IntrRxDone=0x0010, IntrRxStart=0x0020, | |
316 | IntrDrvRqst=0x0040, | |
317 | StatsMax=0x0080, LinkChange=0x0100, | |
318 | IntrTxDMADone=0x0200, IntrRxDMADone=0x0400, | |
319 | }; | |
320 | ||
321 | /* Bits in the RxMode register. */ | |
322 | enum rx_mode_bits { | |
323 | AcceptAllIPMulti=0x20, AcceptMultiHash=0x10, AcceptAll=0x08, | |
324 | AcceptBroadcast=0x04, AcceptMulticast=0x02, AcceptMyPhys=0x01, | |
325 | }; | |
326 | /* Bits in MACCtrl. */ | |
327 | enum mac_ctrl0_bits { | |
328 | EnbFullDuplex=0x20, EnbRcvLargeFrame=0x40, | |
329 | EnbFlowCtrl=0x100, EnbPassRxCRC=0x200, | |
330 | }; | |
331 | enum mac_ctrl1_bits { | |
332 | StatsEnable=0x0020, StatsDisable=0x0040, StatsEnabled=0x0080, | |
333 | TxEnable=0x0100, TxDisable=0x0200, TxEnabled=0x0400, | |
334 | RxEnable=0x0800, RxDisable=0x1000, RxEnabled=0x2000, | |
335 | }; | |
336 | ||
f210e87b DK |
337 | /* Bits in WakeEvent register. */ |
338 | enum wake_event_bits { | |
339 | WakePktEnable = 0x01, | |
340 | MagicPktEnable = 0x02, | |
341 | LinkEventEnable = 0x04, | |
342 | WolEnable = 0x80, | |
343 | }; | |
344 | ||
1da177e4 LT |
345 | /* The Rx and Tx buffer descriptors. */ |
346 | /* Note that using only 32 bit fields simplifies conversion to big-endian | |
347 | architectures. */ | |
348 | struct netdev_desc { | |
14c9d9b0 AV |
349 | __le32 next_desc; |
350 | __le32 status; | |
351 | struct desc_frag { __le32 addr, length; } frag[1]; | |
1da177e4 LT |
352 | }; |
353 | ||
354 | /* Bits in netdev_desc.status */ | |
355 | enum desc_status_bits { | |
356 | DescOwn=0x8000, | |
357 | DescEndPacket=0x4000, | |
358 | DescEndRing=0x2000, | |
359 | LastFrag=0x80000000, | |
360 | DescIntrOnTx=0x8000, | |
361 | DescIntrOnDMADone=0x80000000, | |
362 | DisableAlign = 0x00000001, | |
363 | }; | |
364 | ||
365 | #define PRIV_ALIGN 15 /* Required alignment mask */ | |
366 | /* Use __attribute__((aligned (L1_CACHE_BYTES))) to maintain alignment | |
367 | within the structure. */ | |
368 | #define MII_CNT 4 | |
369 | struct netdev_private { | |
370 | /* Descriptor rings first for alignment. */ | |
371 | struct netdev_desc *rx_ring; | |
372 | struct netdev_desc *tx_ring; | |
373 | struct sk_buff* rx_skbuff[RX_RING_SIZE]; | |
374 | struct sk_buff* tx_skbuff[TX_RING_SIZE]; | |
375 | dma_addr_t tx_ring_dma; | |
376 | dma_addr_t rx_ring_dma; | |
1da177e4 | 377 | struct timer_list timer; /* Media monitoring timer. */ |
725a4a46 DK |
378 | /* ethtool extra stats */ |
379 | struct { | |
380 | u64 tx_multiple_collisions; | |
381 | u64 tx_single_collisions; | |
382 | u64 tx_late_collisions; | |
383 | u64 tx_deferred; | |
384 | u64 tx_deferred_excessive; | |
385 | u64 tx_aborted; | |
386 | u64 tx_bcasts; | |
387 | u64 rx_bcasts; | |
388 | u64 tx_mcasts; | |
389 | u64 rx_mcasts; | |
390 | } xstats; | |
1da177e4 LT |
391 | /* Frequently used values: keep some adjacent for cache effect. */ |
392 | spinlock_t lock; | |
1da177e4 LT |
393 | int msg_enable; |
394 | int chip_id; | |
395 | unsigned int cur_rx, dirty_rx; /* Producer/consumer ring indices */ | |
396 | unsigned int rx_buf_sz; /* Based on MTU+slack. */ | |
397 | struct netdev_desc *last_tx; /* Last Tx descriptor used. */ | |
398 | unsigned int cur_tx, dirty_tx; | |
399 | /* These values are keep track of the transceiver/media in use. */ | |
400 | unsigned int flowctrl:1; | |
401 | unsigned int default_port:4; /* Last dev->if_port value. */ | |
402 | unsigned int an_enable:1; | |
403 | unsigned int speed; | |
f210e87b | 404 | unsigned int wol_enabled:1; /* Wake on LAN enabled */ |
1da177e4 LT |
405 | struct tasklet_struct rx_tasklet; |
406 | struct tasklet_struct tx_tasklet; | |
407 | int budget; | |
408 | int cur_task; | |
409 | /* Multicast and receive mode. */ | |
410 | spinlock_t mcastlock; /* SMP lock multicast updates. */ | |
411 | u16 mcast_filter[4]; | |
412 | /* MII transceiver section. */ | |
413 | struct mii_if_info mii_if; | |
414 | int mii_preamble_required; | |
415 | unsigned char phys[MII_CNT]; /* MII device addresses, only first one used. */ | |
416 | struct pci_dev *pci_dev; | |
417 | void __iomem *base; | |
7b738b55 | 418 | spinlock_t statlock; |
1da177e4 LT |
419 | }; |
420 | ||
421 | /* The station address location in the EEPROM. */ | |
422 | #define EEPROM_SA_OFFSET 0x10 | |
423 | #define DEFAULT_INTR (IntrRxDMADone | IntrPCIErr | \ | |
424 | IntrDrvRqst | IntrTxDone | StatsMax | \ | |
425 | LinkChange) | |
426 | ||
427 | static int change_mtu(struct net_device *dev, int new_mtu); | |
428 | static int eeprom_read(void __iomem *ioaddr, int location); | |
429 | static int mdio_read(struct net_device *dev, int phy_id, int location); | |
430 | static void mdio_write(struct net_device *dev, int phy_id, int location, int value); | |
50500155 | 431 | static int mdio_wait_link(struct net_device *dev, int wait); |
1da177e4 LT |
432 | static int netdev_open(struct net_device *dev); |
433 | static void check_duplex(struct net_device *dev); | |
434 | static void netdev_timer(unsigned long data); | |
435 | static void tx_timeout(struct net_device *dev); | |
436 | static void init_ring(struct net_device *dev); | |
61357325 | 437 | static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev); |
1da177e4 | 438 | static int reset_tx (struct net_device *dev); |
7d12e780 | 439 | static irqreturn_t intr_handler(int irq, void *dev_instance); |
1da177e4 LT |
440 | static void rx_poll(unsigned long data); |
441 | static void tx_poll(unsigned long data); | |
442 | static void refill_rx (struct net_device *dev); | |
443 | static void netdev_error(struct net_device *dev, int intr_status); | |
444 | static void netdev_error(struct net_device *dev, int intr_status); | |
445 | static void set_rx_mode(struct net_device *dev); | |
446 | static int __set_mac_addr(struct net_device *dev); | |
4b4f5467 | 447 | static int sundance_set_mac_addr(struct net_device *dev, void *data); |
1da177e4 LT |
448 | static struct net_device_stats *get_stats(struct net_device *dev); |
449 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
450 | static int netdev_close(struct net_device *dev); | |
7282d491 | 451 | static const struct ethtool_ops ethtool_ops; |
1da177e4 | 452 | |
b71b95ef PDM |
453 | static void sundance_reset(struct net_device *dev, unsigned long reset_cmd) |
454 | { | |
455 | struct netdev_private *np = netdev_priv(dev); | |
456 | void __iomem *ioaddr = np->base + ASICCtrl; | |
457 | int countdown; | |
458 | ||
459 | /* ST201 documentation states ASICCtrl is a 32bit register */ | |
460 | iowrite32 (reset_cmd | ioread32 (ioaddr), ioaddr); | |
461 | /* ST201 documentation states reset can take up to 1 ms */ | |
462 | countdown = 10 + 1; | |
463 | while (ioread32 (ioaddr) & (ResetBusy << 16)) { | |
464 | if (--countdown == 0) { | |
465 | printk(KERN_WARNING "%s : reset not completed !!\n", dev->name); | |
466 | break; | |
467 | } | |
468 | udelay(100); | |
469 | } | |
470 | } | |
471 | ||
633a277e SH |
472 | static const struct net_device_ops netdev_ops = { |
473 | .ndo_open = netdev_open, | |
474 | .ndo_stop = netdev_close, | |
475 | .ndo_start_xmit = start_tx, | |
476 | .ndo_get_stats = get_stats, | |
afc4b13d | 477 | .ndo_set_rx_mode = set_rx_mode, |
633a277e SH |
478 | .ndo_do_ioctl = netdev_ioctl, |
479 | .ndo_tx_timeout = tx_timeout, | |
480 | .ndo_change_mtu = change_mtu, | |
4b4f5467 | 481 | .ndo_set_mac_address = sundance_set_mac_addr, |
633a277e SH |
482 | .ndo_validate_addr = eth_validate_addr, |
483 | }; | |
484 | ||
64bc40de BP |
485 | static int sundance_probe1(struct pci_dev *pdev, |
486 | const struct pci_device_id *ent) | |
1da177e4 LT |
487 | { |
488 | struct net_device *dev; | |
489 | struct netdev_private *np; | |
490 | static int card_idx; | |
491 | int chip_idx = ent->driver_data; | |
492 | int irq; | |
493 | int i; | |
494 | void __iomem *ioaddr; | |
495 | u16 mii_ctl; | |
496 | void *ring_space; | |
497 | dma_addr_t ring_dma; | |
498 | #ifdef USE_IO_OPS | |
499 | int bar = 0; | |
500 | #else | |
501 | int bar = 1; | |
502 | #endif | |
ac1d49f8 | 503 | int phy, phy_end, phy_idx = 0; |
1da177e4 LT |
504 | |
505 | /* when built into the kernel, we only print version if device is found */ | |
506 | #ifndef MODULE | |
507 | static int printed_version; | |
508 | if (!printed_version++) | |
509 | printk(version); | |
510 | #endif | |
511 | ||
512 | if (pci_enable_device(pdev)) | |
513 | return -EIO; | |
514 | pci_set_master(pdev); | |
515 | ||
516 | irq = pdev->irq; | |
517 | ||
518 | dev = alloc_etherdev(sizeof(*np)); | |
519 | if (!dev) | |
520 | return -ENOMEM; | |
1da177e4 LT |
521 | SET_NETDEV_DEV(dev, &pdev->dev); |
522 | ||
523 | if (pci_request_regions(pdev, DRV_NAME)) | |
524 | goto err_out_netdev; | |
525 | ||
526 | ioaddr = pci_iomap(pdev, bar, netdev_io_size); | |
527 | if (!ioaddr) | |
528 | goto err_out_res; | |
529 | ||
530 | for (i = 0; i < 3; i++) | |
14c9d9b0 AV |
531 | ((__le16 *)dev->dev_addr)[i] = |
532 | cpu_to_le16(eeprom_read(ioaddr, i + EEPROM_SA_OFFSET)); | |
1da177e4 | 533 | |
1da177e4 LT |
534 | np = netdev_priv(dev); |
535 | np->base = ioaddr; | |
536 | np->pci_dev = pdev; | |
537 | np->chip_id = chip_idx; | |
538 | np->msg_enable = (1 << debug) - 1; | |
539 | spin_lock_init(&np->lock); | |
7b738b55 | 540 | spin_lock_init(&np->statlock); |
1da177e4 LT |
541 | tasklet_init(&np->rx_tasklet, rx_poll, (unsigned long)dev); |
542 | tasklet_init(&np->tx_tasklet, tx_poll, (unsigned long)dev); | |
543 | ||
0c8a745f DK |
544 | ring_space = dma_alloc_coherent(&pdev->dev, TX_TOTAL_SIZE, |
545 | &ring_dma, GFP_KERNEL); | |
1da177e4 LT |
546 | if (!ring_space) |
547 | goto err_out_cleardev; | |
548 | np->tx_ring = (struct netdev_desc *)ring_space; | |
549 | np->tx_ring_dma = ring_dma; | |
550 | ||
0c8a745f DK |
551 | ring_space = dma_alloc_coherent(&pdev->dev, RX_TOTAL_SIZE, |
552 | &ring_dma, GFP_KERNEL); | |
1da177e4 LT |
553 | if (!ring_space) |
554 | goto err_out_unmap_tx; | |
555 | np->rx_ring = (struct netdev_desc *)ring_space; | |
556 | np->rx_ring_dma = ring_dma; | |
557 | ||
558 | np->mii_if.dev = dev; | |
559 | np->mii_if.mdio_read = mdio_read; | |
560 | np->mii_if.mdio_write = mdio_write; | |
561 | np->mii_if.phy_id_mask = 0x1f; | |
562 | np->mii_if.reg_num_mask = 0x1f; | |
563 | ||
564 | /* The chip-specific entries in the device structure. */ | |
633a277e | 565 | dev->netdev_ops = &netdev_ops; |
1da177e4 | 566 | SET_ETHTOOL_OPS(dev, ðtool_ops); |
1da177e4 | 567 | dev->watchdog_timeo = TX_TIMEOUT; |
633a277e | 568 | |
1da177e4 LT |
569 | pci_set_drvdata(pdev, dev); |
570 | ||
1da177e4 LT |
571 | i = register_netdev(dev); |
572 | if (i) | |
573 | goto err_out_unmap_rx; | |
574 | ||
e174961c | 575 | printk(KERN_INFO "%s: %s at %p, %pM, IRQ %d.\n", |
0795af57 | 576 | dev->name, pci_id_tbl[chip_idx].name, ioaddr, |
e174961c | 577 | dev->dev_addr, irq); |
1da177e4 | 578 | |
67ec2f80 JL |
579 | np->phys[0] = 1; /* Default setting */ |
580 | np->mii_preamble_required++; | |
ac1d49f8 | 581 | |
0d615ec2 ACM |
582 | /* |
583 | * It seems some phys doesn't deal well with address 0 being accessed | |
ac1d49f8 | 584 | * first |
0d615ec2 | 585 | */ |
ac1d49f8 JG |
586 | if (sundance_pci_tbl[np->chip_id].device == 0x0200) { |
587 | phy = 0; | |
588 | phy_end = 31; | |
589 | } else { | |
590 | phy = 1; | |
591 | phy_end = 32; /* wraps to zero, due to 'phy & 0x1f' */ | |
592 | } | |
593 | for (; phy <= phy_end && phy_idx < MII_CNT; phy++) { | |
b06c093e | 594 | int phyx = phy & 0x1f; |
0d615ec2 | 595 | int mii_status = mdio_read(dev, phyx, MII_BMSR); |
67ec2f80 | 596 | if (mii_status != 0xffff && mii_status != 0x0000) { |
b06c093e JL |
597 | np->phys[phy_idx++] = phyx; |
598 | np->mii_if.advertising = mdio_read(dev, phyx, MII_ADVERTISE); | |
67ec2f80 JL |
599 | if ((mii_status & 0x0040) == 0) |
600 | np->mii_preamble_required++; | |
601 | printk(KERN_INFO "%s: MII PHY found at address %d, status " | |
602 | "0x%4.4x advertising %4.4x.\n", | |
b06c093e | 603 | dev->name, phyx, mii_status, np->mii_if.advertising); |
1da177e4 | 604 | } |
67ec2f80 JL |
605 | } |
606 | np->mii_preamble_required--; | |
1da177e4 | 607 | |
67ec2f80 JL |
608 | if (phy_idx == 0) { |
609 | printk(KERN_INFO "%s: No MII transceiver found, aborting. ASIC status %x\n", | |
610 | dev->name, ioread32(ioaddr + ASICCtrl)); | |
611 | goto err_out_unregister; | |
1da177e4 LT |
612 | } |
613 | ||
67ec2f80 JL |
614 | np->mii_if.phy_id = np->phys[0]; |
615 | ||
1da177e4 LT |
616 | /* Parse override configuration */ |
617 | np->an_enable = 1; | |
618 | if (card_idx < MAX_UNITS) { | |
619 | if (media[card_idx] != NULL) { | |
620 | np->an_enable = 0; | |
621 | if (strcmp (media[card_idx], "100mbps_fd") == 0 || | |
622 | strcmp (media[card_idx], "4") == 0) { | |
623 | np->speed = 100; | |
624 | np->mii_if.full_duplex = 1; | |
8e95a202 JP |
625 | } else if (strcmp (media[card_idx], "100mbps_hd") == 0 || |
626 | strcmp (media[card_idx], "3") == 0) { | |
1da177e4 LT |
627 | np->speed = 100; |
628 | np->mii_if.full_duplex = 0; | |
629 | } else if (strcmp (media[card_idx], "10mbps_fd") == 0 || | |
630 | strcmp (media[card_idx], "2") == 0) { | |
631 | np->speed = 10; | |
632 | np->mii_if.full_duplex = 1; | |
633 | } else if (strcmp (media[card_idx], "10mbps_hd") == 0 || | |
634 | strcmp (media[card_idx], "1") == 0) { | |
635 | np->speed = 10; | |
636 | np->mii_if.full_duplex = 0; | |
637 | } else { | |
638 | np->an_enable = 1; | |
639 | } | |
640 | } | |
641 | if (flowctrl == 1) | |
642 | np->flowctrl = 1; | |
643 | } | |
644 | ||
645 | /* Fibre PHY? */ | |
646 | if (ioread32 (ioaddr + ASICCtrl) & 0x80) { | |
647 | /* Default 100Mbps Full */ | |
648 | if (np->an_enable) { | |
649 | np->speed = 100; | |
650 | np->mii_if.full_duplex = 1; | |
651 | np->an_enable = 0; | |
652 | } | |
653 | } | |
654 | /* Reset PHY */ | |
655 | mdio_write (dev, np->phys[0], MII_BMCR, BMCR_RESET); | |
656 | mdelay (300); | |
657 | /* If flow control enabled, we need to advertise it.*/ | |
658 | if (np->flowctrl) | |
659 | mdio_write (dev, np->phys[0], MII_ADVERTISE, np->mii_if.advertising | 0x0400); | |
660 | mdio_write (dev, np->phys[0], MII_BMCR, BMCR_ANENABLE|BMCR_ANRESTART); | |
661 | /* Force media type */ | |
662 | if (!np->an_enable) { | |
663 | mii_ctl = 0; | |
664 | mii_ctl |= (np->speed == 100) ? BMCR_SPEED100 : 0; | |
665 | mii_ctl |= (np->mii_if.full_duplex) ? BMCR_FULLDPLX : 0; | |
666 | mdio_write (dev, np->phys[0], MII_BMCR, mii_ctl); | |
667 | printk (KERN_INFO "Override speed=%d, %s duplex\n", | |
668 | np->speed, np->mii_if.full_duplex ? "Full" : "Half"); | |
669 | ||
670 | } | |
671 | ||
672 | /* Perhaps move the reset here? */ | |
673 | /* Reset the chip to erase previous misconfiguration. */ | |
674 | if (netif_msg_hw(np)) | |
675 | printk("ASIC Control is %x.\n", ioread32(ioaddr + ASICCtrl)); | |
e714d99c | 676 | sundance_reset(dev, 0x00ff << 16); |
1da177e4 LT |
677 | if (netif_msg_hw(np)) |
678 | printk("ASIC Control is now %x.\n", ioread32(ioaddr + ASICCtrl)); | |
679 | ||
680 | card_idx++; | |
681 | return 0; | |
682 | ||
683 | err_out_unregister: | |
684 | unregister_netdev(dev); | |
685 | err_out_unmap_rx: | |
0c8a745f DK |
686 | dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE, |
687 | np->rx_ring, np->rx_ring_dma); | |
1da177e4 | 688 | err_out_unmap_tx: |
0c8a745f DK |
689 | dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE, |
690 | np->tx_ring, np->tx_ring_dma); | |
1da177e4 LT |
691 | err_out_cleardev: |
692 | pci_set_drvdata(pdev, NULL); | |
693 | pci_iounmap(pdev, ioaddr); | |
694 | err_out_res: | |
695 | pci_release_regions(pdev); | |
696 | err_out_netdev: | |
697 | free_netdev (dev); | |
698 | return -ENODEV; | |
699 | } | |
700 | ||
701 | static int change_mtu(struct net_device *dev, int new_mtu) | |
702 | { | |
703 | if ((new_mtu < 68) || (new_mtu > 8191)) /* Set by RxDMAFrameLen */ | |
704 | return -EINVAL; | |
705 | if (netif_running(dev)) | |
706 | return -EBUSY; | |
707 | dev->mtu = new_mtu; | |
708 | return 0; | |
709 | } | |
710 | ||
711 | #define eeprom_delay(ee_addr) ioread32(ee_addr) | |
712 | /* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. */ | |
64bc40de | 713 | static int eeprom_read(void __iomem *ioaddr, int location) |
1da177e4 LT |
714 | { |
715 | int boguscnt = 10000; /* Typical 1900 ticks. */ | |
716 | iowrite16(0x0200 | (location & 0xff), ioaddr + EECtrl); | |
717 | do { | |
718 | eeprom_delay(ioaddr + EECtrl); | |
719 | if (! (ioread16(ioaddr + EECtrl) & 0x8000)) { | |
720 | return ioread16(ioaddr + EEData); | |
721 | } | |
722 | } while (--boguscnt > 0); | |
723 | return 0; | |
724 | } | |
725 | ||
726 | /* MII transceiver control section. | |
727 | Read and write the MII registers using software-generated serial | |
728 | MDIO protocol. See the MII specifications or DP83840A data sheet | |
729 | for details. | |
730 | ||
731 | The maximum data clock rate is 2.5 Mhz. The minimum timing is usually | |
732 | met by back-to-back 33Mhz PCI cycles. */ | |
733 | #define mdio_delay() ioread8(mdio_addr) | |
734 | ||
735 | enum mii_reg_bits { | |
736 | MDIO_ShiftClk=0x0001, MDIO_Data=0x0002, MDIO_EnbOutput=0x0004, | |
737 | }; | |
738 | #define MDIO_EnbIn (0) | |
739 | #define MDIO_WRITE0 (MDIO_EnbOutput) | |
740 | #define MDIO_WRITE1 (MDIO_Data | MDIO_EnbOutput) | |
741 | ||
742 | /* Generate the preamble required for initial synchronization and | |
743 | a few older transceivers. */ | |
744 | static void mdio_sync(void __iomem *mdio_addr) | |
745 | { | |
746 | int bits = 32; | |
747 | ||
748 | /* Establish sync by sending at least 32 logic ones. */ | |
749 | while (--bits >= 0) { | |
750 | iowrite8(MDIO_WRITE1, mdio_addr); | |
751 | mdio_delay(); | |
752 | iowrite8(MDIO_WRITE1 | MDIO_ShiftClk, mdio_addr); | |
753 | mdio_delay(); | |
754 | } | |
755 | } | |
756 | ||
757 | static int mdio_read(struct net_device *dev, int phy_id, int location) | |
758 | { | |
759 | struct netdev_private *np = netdev_priv(dev); | |
760 | void __iomem *mdio_addr = np->base + MIICtrl; | |
761 | int mii_cmd = (0xf6 << 10) | (phy_id << 5) | location; | |
762 | int i, retval = 0; | |
763 | ||
764 | if (np->mii_preamble_required) | |
765 | mdio_sync(mdio_addr); | |
766 | ||
767 | /* Shift the read command bits out. */ | |
768 | for (i = 15; i >= 0; i--) { | |
769 | int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; | |
770 | ||
771 | iowrite8(dataval, mdio_addr); | |
772 | mdio_delay(); | |
773 | iowrite8(dataval | MDIO_ShiftClk, mdio_addr); | |
774 | mdio_delay(); | |
775 | } | |
776 | /* Read the two transition, 16 data, and wire-idle bits. */ | |
777 | for (i = 19; i > 0; i--) { | |
778 | iowrite8(MDIO_EnbIn, mdio_addr); | |
779 | mdio_delay(); | |
780 | retval = (retval << 1) | ((ioread8(mdio_addr) & MDIO_Data) ? 1 : 0); | |
781 | iowrite8(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); | |
782 | mdio_delay(); | |
783 | } | |
784 | return (retval>>1) & 0xffff; | |
785 | } | |
786 | ||
787 | static void mdio_write(struct net_device *dev, int phy_id, int location, int value) | |
788 | { | |
789 | struct netdev_private *np = netdev_priv(dev); | |
790 | void __iomem *mdio_addr = np->base + MIICtrl; | |
791 | int mii_cmd = (0x5002 << 16) | (phy_id << 23) | (location<<18) | value; | |
792 | int i; | |
793 | ||
794 | if (np->mii_preamble_required) | |
795 | mdio_sync(mdio_addr); | |
796 | ||
797 | /* Shift the command bits out. */ | |
798 | for (i = 31; i >= 0; i--) { | |
799 | int dataval = (mii_cmd & (1 << i)) ? MDIO_WRITE1 : MDIO_WRITE0; | |
800 | ||
801 | iowrite8(dataval, mdio_addr); | |
802 | mdio_delay(); | |
803 | iowrite8(dataval | MDIO_ShiftClk, mdio_addr); | |
804 | mdio_delay(); | |
805 | } | |
806 | /* Clear out extra bits. */ | |
807 | for (i = 2; i > 0; i--) { | |
808 | iowrite8(MDIO_EnbIn, mdio_addr); | |
809 | mdio_delay(); | |
810 | iowrite8(MDIO_EnbIn | MDIO_ShiftClk, mdio_addr); | |
811 | mdio_delay(); | |
812 | } | |
1da177e4 LT |
813 | } |
814 | ||
50500155 DN |
815 | static int mdio_wait_link(struct net_device *dev, int wait) |
816 | { | |
817 | int bmsr; | |
818 | int phy_id; | |
819 | struct netdev_private *np; | |
820 | ||
821 | np = netdev_priv(dev); | |
822 | phy_id = np->phys[0]; | |
823 | ||
824 | do { | |
825 | bmsr = mdio_read(dev, phy_id, MII_BMSR); | |
826 | if (bmsr & 0x0004) | |
827 | return 0; | |
828 | mdelay(1); | |
829 | } while (--wait > 0); | |
830 | return -1; | |
831 | } | |
832 | ||
1da177e4 LT |
833 | static int netdev_open(struct net_device *dev) |
834 | { | |
835 | struct netdev_private *np = netdev_priv(dev); | |
836 | void __iomem *ioaddr = np->base; | |
c514f285 | 837 | const int irq = np->pci_dev->irq; |
acd70c2b | 838 | unsigned long flags; |
1da177e4 LT |
839 | int i; |
840 | ||
f210e87b | 841 | sundance_reset(dev, 0x00ff << 16); |
1da177e4 | 842 | |
c514f285 | 843 | i = request_irq(irq, intr_handler, IRQF_SHARED, dev->name, dev); |
1da177e4 LT |
844 | if (i) |
845 | return i; | |
846 | ||
847 | if (netif_msg_ifup(np)) | |
c514f285 FR |
848 | printk(KERN_DEBUG "%s: netdev_open() irq %d\n", dev->name, irq); |
849 | ||
1da177e4 LT |
850 | init_ring(dev); |
851 | ||
852 | iowrite32(np->rx_ring_dma, ioaddr + RxListPtr); | |
853 | /* The Tx list pointer is written as packets are queued. */ | |
854 | ||
855 | /* Initialize other registers. */ | |
856 | __set_mac_addr(dev); | |
857 | #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) | |
858 | iowrite16(dev->mtu + 18, ioaddr + MaxFrameSize); | |
859 | #else | |
860 | iowrite16(dev->mtu + 14, ioaddr + MaxFrameSize); | |
861 | #endif | |
862 | if (dev->mtu > 2047) | |
863 | iowrite32(ioread32(ioaddr + ASICCtrl) | 0x0C, ioaddr + ASICCtrl); | |
864 | ||
865 | /* Configure the PCI bus bursts and FIFO thresholds. */ | |
866 | ||
867 | if (dev->if_port == 0) | |
868 | dev->if_port = np->default_port; | |
869 | ||
870 | spin_lock_init(&np->mcastlock); | |
871 | ||
872 | set_rx_mode(dev); | |
873 | iowrite16(0, ioaddr + IntrEnable); | |
874 | iowrite16(0, ioaddr + DownCounter); | |
875 | /* Set the chip to poll every N*320nsec. */ | |
876 | iowrite8(100, ioaddr + RxDMAPollPeriod); | |
877 | iowrite8(127, ioaddr + TxDMAPollPeriod); | |
878 | /* Fix DFE-580TX packet drop issue */ | |
44c10138 | 879 | if (np->pci_dev->revision >= 0x14) |
1da177e4 LT |
880 | iowrite8(0x01, ioaddr + DebugCtrl1); |
881 | netif_start_queue(dev); | |
882 | ||
acd70c2b JH |
883 | spin_lock_irqsave(&np->lock, flags); |
884 | reset_tx(dev); | |
885 | spin_unlock_irqrestore(&np->lock, flags); | |
886 | ||
1da177e4 LT |
887 | iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1); |
888 | ||
f210e87b DK |
889 | /* Disable Wol */ |
890 | iowrite8(ioread8(ioaddr + WakeEvent) | 0x00, ioaddr + WakeEvent); | |
891 | np->wol_enabled = 0; | |
892 | ||
1da177e4 LT |
893 | if (netif_msg_ifup(np)) |
894 | printk(KERN_DEBUG "%s: Done netdev_open(), status: Rx %x Tx %x " | |
895 | "MAC Control %x, %4.4x %4.4x.\n", | |
896 | dev->name, ioread32(ioaddr + RxStatus), ioread8(ioaddr + TxStatus), | |
897 | ioread32(ioaddr + MACCtrl0), | |
898 | ioread16(ioaddr + MACCtrl1), ioread16(ioaddr + MACCtrl0)); | |
899 | ||
900 | /* Set the timer to check for link beat. */ | |
901 | init_timer(&np->timer); | |
902 | np->timer.expires = jiffies + 3*HZ; | |
903 | np->timer.data = (unsigned long)dev; | |
c061b18d | 904 | np->timer.function = netdev_timer; /* timer handler */ |
1da177e4 LT |
905 | add_timer(&np->timer); |
906 | ||
907 | /* Enable interrupts by setting the interrupt mask. */ | |
908 | iowrite16(DEFAULT_INTR, ioaddr + IntrEnable); | |
909 | ||
910 | return 0; | |
911 | } | |
912 | ||
913 | static void check_duplex(struct net_device *dev) | |
914 | { | |
915 | struct netdev_private *np = netdev_priv(dev); | |
916 | void __iomem *ioaddr = np->base; | |
917 | int mii_lpa = mdio_read(dev, np->phys[0], MII_LPA); | |
918 | int negotiated = mii_lpa & np->mii_if.advertising; | |
919 | int duplex; | |
920 | ||
921 | /* Force media */ | |
922 | if (!np->an_enable || mii_lpa == 0xffff) { | |
923 | if (np->mii_if.full_duplex) | |
924 | iowrite16 (ioread16 (ioaddr + MACCtrl0) | EnbFullDuplex, | |
925 | ioaddr + MACCtrl0); | |
926 | return; | |
927 | } | |
928 | ||
929 | /* Autonegotiation */ | |
930 | duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040; | |
931 | if (np->mii_if.full_duplex != duplex) { | |
932 | np->mii_if.full_duplex = duplex; | |
933 | if (netif_msg_link(np)) | |
934 | printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d " | |
935 | "negotiated capability %4.4x.\n", dev->name, | |
936 | duplex ? "full" : "half", np->phys[0], negotiated); | |
62660e28 | 937 | iowrite16(ioread16(ioaddr + MACCtrl0) | (duplex ? 0x20 : 0), ioaddr + MACCtrl0); |
1da177e4 LT |
938 | } |
939 | } | |
940 | ||
941 | static void netdev_timer(unsigned long data) | |
942 | { | |
943 | struct net_device *dev = (struct net_device *)data; | |
944 | struct netdev_private *np = netdev_priv(dev); | |
945 | void __iomem *ioaddr = np->base; | |
946 | int next_tick = 10*HZ; | |
947 | ||
948 | if (netif_msg_timer(np)) { | |
949 | printk(KERN_DEBUG "%s: Media selection timer tick, intr status %4.4x, " | |
950 | "Tx %x Rx %x.\n", | |
951 | dev->name, ioread16(ioaddr + IntrEnable), | |
952 | ioread8(ioaddr + TxStatus), ioread32(ioaddr + RxStatus)); | |
953 | } | |
954 | check_duplex(dev); | |
955 | np->timer.expires = jiffies + next_tick; | |
956 | add_timer(&np->timer); | |
957 | } | |
958 | ||
959 | static void tx_timeout(struct net_device *dev) | |
960 | { | |
961 | struct netdev_private *np = netdev_priv(dev); | |
962 | void __iomem *ioaddr = np->base; | |
963 | unsigned long flag; | |
6aa20a22 | 964 | |
1da177e4 LT |
965 | netif_stop_queue(dev); |
966 | tasklet_disable(&np->tx_tasklet); | |
967 | iowrite16(0, ioaddr + IntrEnable); | |
968 | printk(KERN_WARNING "%s: Transmit timed out, TxStatus %2.2x " | |
969 | "TxFrameId %2.2x," | |
970 | " resetting...\n", dev->name, ioread8(ioaddr + TxStatus), | |
971 | ioread8(ioaddr + TxFrameId)); | |
972 | ||
973 | { | |
974 | int i; | |
975 | for (i=0; i<TX_RING_SIZE; i++) { | |
976 | printk(KERN_DEBUG "%02x %08llx %08x %08x(%02x) %08x %08x\n", i, | |
977 | (unsigned long long)(np->tx_ring_dma + i*sizeof(*np->tx_ring)), | |
978 | le32_to_cpu(np->tx_ring[i].next_desc), | |
979 | le32_to_cpu(np->tx_ring[i].status), | |
980 | (le32_to_cpu(np->tx_ring[i].status) >> 2) & 0xff, | |
6aa20a22 | 981 | le32_to_cpu(np->tx_ring[i].frag[0].addr), |
1da177e4 LT |
982 | le32_to_cpu(np->tx_ring[i].frag[0].length)); |
983 | } | |
6aa20a22 JG |
984 | printk(KERN_DEBUG "TxListPtr=%08x netif_queue_stopped=%d\n", |
985 | ioread32(np->base + TxListPtr), | |
1da177e4 | 986 | netif_queue_stopped(dev)); |
6aa20a22 | 987 | printk(KERN_DEBUG "cur_tx=%d(%02x) dirty_tx=%d(%02x)\n", |
1da177e4 LT |
988 | np->cur_tx, np->cur_tx % TX_RING_SIZE, |
989 | np->dirty_tx, np->dirty_tx % TX_RING_SIZE); | |
990 | printk(KERN_DEBUG "cur_rx=%d dirty_rx=%d\n", np->cur_rx, np->dirty_rx); | |
991 | printk(KERN_DEBUG "cur_task=%d\n", np->cur_task); | |
992 | } | |
993 | spin_lock_irqsave(&np->lock, flag); | |
994 | ||
995 | /* Stop and restart the chip's Tx processes . */ | |
996 | reset_tx(dev); | |
997 | spin_unlock_irqrestore(&np->lock, flag); | |
998 | ||
999 | dev->if_port = 0; | |
1000 | ||
1ae5dc34 | 1001 | dev->trans_start = jiffies; /* prevent tx timeout */ |
553e2335 | 1002 | dev->stats.tx_errors++; |
1da177e4 LT |
1003 | if (np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) { |
1004 | netif_wake_queue(dev); | |
1005 | } | |
1006 | iowrite16(DEFAULT_INTR, ioaddr + IntrEnable); | |
1007 | tasklet_enable(&np->tx_tasklet); | |
1008 | } | |
1009 | ||
1010 | ||
1011 | /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ | |
1012 | static void init_ring(struct net_device *dev) | |
1013 | { | |
1014 | struct netdev_private *np = netdev_priv(dev); | |
1015 | int i; | |
1016 | ||
1017 | np->cur_rx = np->cur_tx = 0; | |
1018 | np->dirty_rx = np->dirty_tx = 0; | |
1019 | np->cur_task = 0; | |
1020 | ||
1021 | np->rx_buf_sz = (dev->mtu <= 1520 ? PKT_BUF_SZ : dev->mtu + 16); | |
1022 | ||
1023 | /* Initialize all Rx descriptors. */ | |
1024 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1025 | np->rx_ring[i].next_desc = cpu_to_le32(np->rx_ring_dma + | |
1026 | ((i+1)%RX_RING_SIZE)*sizeof(*np->rx_ring)); | |
1027 | np->rx_ring[i].status = 0; | |
1028 | np->rx_ring[i].frag[0].length = 0; | |
1029 | np->rx_skbuff[i] = NULL; | |
1030 | } | |
1031 | ||
1032 | /* Fill in the Rx buffers. Handle allocation failure gracefully. */ | |
1033 | for (i = 0; i < RX_RING_SIZE; i++) { | |
21a4e469 PD |
1034 | struct sk_buff *skb = |
1035 | netdev_alloc_skb(dev, np->rx_buf_sz + 2); | |
1da177e4 LT |
1036 | np->rx_skbuff[i] = skb; |
1037 | if (skb == NULL) | |
1038 | break; | |
1da177e4 LT |
1039 | skb_reserve(skb, 2); /* 16 byte align the IP header. */ |
1040 | np->rx_ring[i].frag[0].addr = cpu_to_le32( | |
0c8a745f DK |
1041 | dma_map_single(&np->pci_dev->dev, skb->data, |
1042 | np->rx_buf_sz, DMA_FROM_DEVICE)); | |
d91dc279 DK |
1043 | if (dma_mapping_error(&np->pci_dev->dev, |
1044 | np->rx_ring[i].frag[0].addr)) { | |
1045 | dev_kfree_skb(skb); | |
1046 | np->rx_skbuff[i] = NULL; | |
1047 | break; | |
1048 | } | |
1da177e4 LT |
1049 | np->rx_ring[i].frag[0].length = cpu_to_le32(np->rx_buf_sz | LastFrag); |
1050 | } | |
1051 | np->dirty_rx = (unsigned int)(i - RX_RING_SIZE); | |
1052 | ||
1053 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1054 | np->tx_skbuff[i] = NULL; | |
1055 | np->tx_ring[i].status = 0; | |
1056 | } | |
1da177e4 LT |
1057 | } |
1058 | ||
1059 | static void tx_poll (unsigned long data) | |
1060 | { | |
1061 | struct net_device *dev = (struct net_device *)data; | |
1062 | struct netdev_private *np = netdev_priv(dev); | |
1063 | unsigned head = np->cur_task % TX_RING_SIZE; | |
6aa20a22 | 1064 | struct netdev_desc *txdesc = |
1da177e4 | 1065 | &np->tx_ring[(np->cur_tx - 1) % TX_RING_SIZE]; |
6aa20a22 | 1066 | |
1da177e4 LT |
1067 | /* Chain the next pointer */ |
1068 | for (; np->cur_tx - np->cur_task > 0; np->cur_task++) { | |
1069 | int entry = np->cur_task % TX_RING_SIZE; | |
1070 | txdesc = &np->tx_ring[entry]; | |
1071 | if (np->last_tx) { | |
1072 | np->last_tx->next_desc = cpu_to_le32(np->tx_ring_dma + | |
1073 | entry*sizeof(struct netdev_desc)); | |
1074 | } | |
1075 | np->last_tx = txdesc; | |
1076 | } | |
1077 | /* Indicate the latest descriptor of tx ring */ | |
1078 | txdesc->status |= cpu_to_le32(DescIntrOnTx); | |
1079 | ||
1080 | if (ioread32 (np->base + TxListPtr) == 0) | |
1081 | iowrite32 (np->tx_ring_dma + head * sizeof(struct netdev_desc), | |
1082 | np->base + TxListPtr); | |
1da177e4 LT |
1083 | } |
1084 | ||
61357325 | 1085 | static netdev_tx_t |
1da177e4 LT |
1086 | start_tx (struct sk_buff *skb, struct net_device *dev) |
1087 | { | |
1088 | struct netdev_private *np = netdev_priv(dev); | |
1089 | struct netdev_desc *txdesc; | |
1090 | unsigned entry; | |
1091 | ||
1092 | /* Calculate the next Tx descriptor entry. */ | |
1093 | entry = np->cur_tx % TX_RING_SIZE; | |
1094 | np->tx_skbuff[entry] = skb; | |
1095 | txdesc = &np->tx_ring[entry]; | |
1096 | ||
1097 | txdesc->next_desc = 0; | |
1098 | txdesc->status = cpu_to_le32 ((entry << 2) | DisableAlign); | |
0c8a745f DK |
1099 | txdesc->frag[0].addr = cpu_to_le32(dma_map_single(&np->pci_dev->dev, |
1100 | skb->data, skb->len, DMA_TO_DEVICE)); | |
d91dc279 DK |
1101 | if (dma_mapping_error(&np->pci_dev->dev, |
1102 | txdesc->frag[0].addr)) | |
1103 | goto drop_frame; | |
1da177e4 LT |
1104 | txdesc->frag[0].length = cpu_to_le32 (skb->len | LastFrag); |
1105 | ||
1106 | /* Increment cur_tx before tasklet_schedule() */ | |
1107 | np->cur_tx++; | |
1108 | mb(); | |
1109 | /* Schedule a tx_poll() task */ | |
1110 | tasklet_schedule(&np->tx_tasklet); | |
1111 | ||
1112 | /* On some architectures: explicitly flush cache lines here. */ | |
8e95a202 JP |
1113 | if (np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 1 && |
1114 | !netif_queue_stopped(dev)) { | |
1da177e4 LT |
1115 | /* do nothing */ |
1116 | } else { | |
1117 | netif_stop_queue (dev); | |
1118 | } | |
1da177e4 LT |
1119 | if (netif_msg_tx_queued(np)) { |
1120 | printk (KERN_DEBUG | |
1121 | "%s: Transmit frame #%d queued in slot %d.\n", | |
1122 | dev->name, np->cur_tx, entry); | |
1123 | } | |
6ed10654 | 1124 | return NETDEV_TX_OK; |
d91dc279 DK |
1125 | |
1126 | drop_frame: | |
1127 | dev_kfree_skb(skb); | |
1128 | np->tx_skbuff[entry] = NULL; | |
1129 | dev->stats.tx_dropped++; | |
1130 | return NETDEV_TX_OK; | |
1da177e4 LT |
1131 | } |
1132 | ||
1133 | /* Reset hardware tx and free all of tx buffers */ | |
1134 | static int | |
1135 | reset_tx (struct net_device *dev) | |
1136 | { | |
1137 | struct netdev_private *np = netdev_priv(dev); | |
1138 | void __iomem *ioaddr = np->base; | |
1139 | struct sk_buff *skb; | |
1140 | int i; | |
6aa20a22 | 1141 | |
1da177e4 LT |
1142 | /* Reset tx logic, TxListPtr will be cleaned */ |
1143 | iowrite16 (TxDisable, ioaddr + MACCtrl1); | |
e714d99c PDM |
1144 | sundance_reset(dev, (NetworkReset|FIFOReset|DMAReset|TxReset) << 16); |
1145 | ||
1da177e4 LT |
1146 | /* free all tx skbuff */ |
1147 | for (i = 0; i < TX_RING_SIZE; i++) { | |
2109f89f JH |
1148 | np->tx_ring[i].next_desc = 0; |
1149 | ||
1da177e4 LT |
1150 | skb = np->tx_skbuff[i]; |
1151 | if (skb) { | |
0c8a745f | 1152 | dma_unmap_single(&np->pci_dev->dev, |
14c9d9b0 | 1153 | le32_to_cpu(np->tx_ring[i].frag[0].addr), |
0c8a745f | 1154 | skb->len, DMA_TO_DEVICE); |
a9478e38 | 1155 | dev_kfree_skb_any(skb); |
1da177e4 | 1156 | np->tx_skbuff[i] = NULL; |
553e2335 | 1157 | dev->stats.tx_dropped++; |
1da177e4 LT |
1158 | } |
1159 | } | |
1160 | np->cur_tx = np->dirty_tx = 0; | |
1161 | np->cur_task = 0; | |
2109f89f | 1162 | |
bca79eb7 | 1163 | np->last_tx = NULL; |
2109f89f JH |
1164 | iowrite8(127, ioaddr + TxDMAPollPeriod); |
1165 | ||
1da177e4 LT |
1166 | iowrite16 (StatsEnable | RxEnable | TxEnable, ioaddr + MACCtrl1); |
1167 | return 0; | |
1168 | } | |
1169 | ||
6aa20a22 | 1170 | /* The interrupt handler cleans up after the Tx thread, |
1da177e4 | 1171 | and schedule a Rx thread work */ |
7d12e780 | 1172 | static irqreturn_t intr_handler(int irq, void *dev_instance) |
1da177e4 LT |
1173 | { |
1174 | struct net_device *dev = (struct net_device *)dev_instance; | |
1175 | struct netdev_private *np = netdev_priv(dev); | |
1176 | void __iomem *ioaddr = np->base; | |
1177 | int hw_frame_id; | |
1178 | int tx_cnt; | |
1179 | int tx_status; | |
1180 | int handled = 0; | |
e242040d | 1181 | int i; |
1da177e4 LT |
1182 | |
1183 | ||
1184 | do { | |
1185 | int intr_status = ioread16(ioaddr + IntrStatus); | |
1186 | iowrite16(intr_status, ioaddr + IntrStatus); | |
1187 | ||
1188 | if (netif_msg_intr(np)) | |
1189 | printk(KERN_DEBUG "%s: Interrupt, status %4.4x.\n", | |
1190 | dev->name, intr_status); | |
1191 | ||
1192 | if (!(intr_status & DEFAULT_INTR)) | |
1193 | break; | |
1194 | ||
1195 | handled = 1; | |
1196 | ||
1197 | if (intr_status & (IntrRxDMADone)) { | |
1198 | iowrite16(DEFAULT_INTR & ~(IntrRxDone|IntrRxDMADone), | |
1199 | ioaddr + IntrEnable); | |
1200 | if (np->budget < 0) | |
1201 | np->budget = RX_BUDGET; | |
1202 | tasklet_schedule(&np->rx_tasklet); | |
1203 | } | |
1204 | if (intr_status & (IntrTxDone | IntrDrvRqst)) { | |
1205 | tx_status = ioread16 (ioaddr + TxStatus); | |
1206 | for (tx_cnt=32; tx_status & 0x80; --tx_cnt) { | |
1207 | if (netif_msg_tx_done(np)) | |
1208 | printk | |
1209 | ("%s: Transmit status is %2.2x.\n", | |
1210 | dev->name, tx_status); | |
1211 | if (tx_status & 0x1e) { | |
b71b95ef PDM |
1212 | if (netif_msg_tx_err(np)) |
1213 | printk("%s: Transmit error status %4.4x.\n", | |
1214 | dev->name, tx_status); | |
553e2335 | 1215 | dev->stats.tx_errors++; |
1da177e4 | 1216 | if (tx_status & 0x10) |
553e2335 | 1217 | dev->stats.tx_fifo_errors++; |
1da177e4 | 1218 | if (tx_status & 0x08) |
553e2335 | 1219 | dev->stats.collisions++; |
b71b95ef | 1220 | if (tx_status & 0x04) |
553e2335 | 1221 | dev->stats.tx_fifo_errors++; |
1da177e4 | 1222 | if (tx_status & 0x02) |
553e2335 | 1223 | dev->stats.tx_window_errors++; |
e242040d | 1224 | |
b71b95ef PDM |
1225 | /* |
1226 | ** This reset has been verified on | |
1227 | ** DFE-580TX boards ! phdm@macqel.be. | |
1228 | */ | |
1229 | if (tx_status & 0x10) { /* TxUnderrun */ | |
b71b95ef PDM |
1230 | /* Restart Tx FIFO and transmitter */ |
1231 | sundance_reset(dev, (NetworkReset|FIFOReset|TxReset) << 16); | |
b71b95ef | 1232 | /* No need to reset the Tx pointer here */ |
1da177e4 | 1233 | } |
2109f89f JH |
1234 | /* Restart the Tx. Need to make sure tx enabled */ |
1235 | i = 10; | |
1236 | do { | |
1237 | iowrite16(ioread16(ioaddr + MACCtrl1) | TxEnable, ioaddr + MACCtrl1); | |
1238 | if (ioread16(ioaddr + MACCtrl1) & TxEnabled) | |
1239 | break; | |
1240 | mdelay(1); | |
1241 | } while (--i); | |
1da177e4 LT |
1242 | } |
1243 | /* Yup, this is a documentation bug. It cost me *hours*. */ | |
1244 | iowrite16 (0, ioaddr + TxStatus); | |
1245 | if (tx_cnt < 0) { | |
1246 | iowrite32(5000, ioaddr + DownCounter); | |
1247 | break; | |
1248 | } | |
1249 | tx_status = ioread16 (ioaddr + TxStatus); | |
1250 | } | |
1251 | hw_frame_id = (tx_status >> 8) & 0xff; | |
1252 | } else { | |
1253 | hw_frame_id = ioread8(ioaddr + TxFrameId); | |
1254 | } | |
6aa20a22 | 1255 | |
44c10138 | 1256 | if (np->pci_dev->revision >= 0x14) { |
1da177e4 LT |
1257 | spin_lock(&np->lock); |
1258 | for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) { | |
1259 | int entry = np->dirty_tx % TX_RING_SIZE; | |
1260 | struct sk_buff *skb; | |
1261 | int sw_frame_id; | |
1262 | sw_frame_id = (le32_to_cpu( | |
1263 | np->tx_ring[entry].status) >> 2) & 0xff; | |
1264 | if (sw_frame_id == hw_frame_id && | |
1265 | !(le32_to_cpu(np->tx_ring[entry].status) | |
1266 | & 0x00010000)) | |
1267 | break; | |
6aa20a22 | 1268 | if (sw_frame_id == (hw_frame_id + 1) % |
1da177e4 LT |
1269 | TX_RING_SIZE) |
1270 | break; | |
1271 | skb = np->tx_skbuff[entry]; | |
1272 | /* Free the original skb. */ | |
0c8a745f | 1273 | dma_unmap_single(&np->pci_dev->dev, |
14c9d9b0 | 1274 | le32_to_cpu(np->tx_ring[entry].frag[0].addr), |
0c8a745f | 1275 | skb->len, DMA_TO_DEVICE); |
1da177e4 LT |
1276 | dev_kfree_skb_irq (np->tx_skbuff[entry]); |
1277 | np->tx_skbuff[entry] = NULL; | |
1278 | np->tx_ring[entry].frag[0].addr = 0; | |
1279 | np->tx_ring[entry].frag[0].length = 0; | |
1280 | } | |
1281 | spin_unlock(&np->lock); | |
1282 | } else { | |
1283 | spin_lock(&np->lock); | |
1284 | for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) { | |
1285 | int entry = np->dirty_tx % TX_RING_SIZE; | |
1286 | struct sk_buff *skb; | |
6aa20a22 | 1287 | if (!(le32_to_cpu(np->tx_ring[entry].status) |
1da177e4 LT |
1288 | & 0x00010000)) |
1289 | break; | |
1290 | skb = np->tx_skbuff[entry]; | |
1291 | /* Free the original skb. */ | |
0c8a745f | 1292 | dma_unmap_single(&np->pci_dev->dev, |
14c9d9b0 | 1293 | le32_to_cpu(np->tx_ring[entry].frag[0].addr), |
0c8a745f | 1294 | skb->len, DMA_TO_DEVICE); |
1da177e4 LT |
1295 | dev_kfree_skb_irq (np->tx_skbuff[entry]); |
1296 | np->tx_skbuff[entry] = NULL; | |
1297 | np->tx_ring[entry].frag[0].addr = 0; | |
1298 | np->tx_ring[entry].frag[0].length = 0; | |
1299 | } | |
1300 | spin_unlock(&np->lock); | |
1301 | } | |
6aa20a22 | 1302 | |
1da177e4 LT |
1303 | if (netif_queue_stopped(dev) && |
1304 | np->cur_tx - np->dirty_tx < TX_QUEUE_LEN - 4) { | |
1305 | /* The ring is no longer full, clear busy flag. */ | |
1306 | netif_wake_queue (dev); | |
1307 | } | |
1308 | /* Abnormal error summary/uncommon events handlers. */ | |
1309 | if (intr_status & (IntrPCIErr | LinkChange | StatsMax)) | |
1310 | netdev_error(dev, intr_status); | |
1311 | } while (0); | |
1312 | if (netif_msg_intr(np)) | |
1313 | printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.\n", | |
1314 | dev->name, ioread16(ioaddr + IntrStatus)); | |
1315 | return IRQ_RETVAL(handled); | |
1316 | } | |
1317 | ||
1318 | static void rx_poll(unsigned long data) | |
1319 | { | |
1320 | struct net_device *dev = (struct net_device *)data; | |
1321 | struct netdev_private *np = netdev_priv(dev); | |
1322 | int entry = np->cur_rx % RX_RING_SIZE; | |
1323 | int boguscnt = np->budget; | |
1324 | void __iomem *ioaddr = np->base; | |
1325 | int received = 0; | |
1326 | ||
1327 | /* If EOP is set on the next entry, it's a new packet. Send it up. */ | |
1328 | while (1) { | |
1329 | struct netdev_desc *desc = &(np->rx_ring[entry]); | |
1330 | u32 frame_status = le32_to_cpu(desc->status); | |
1331 | int pkt_len; | |
1332 | ||
1333 | if (--boguscnt < 0) { | |
1334 | goto not_done; | |
1335 | } | |
1336 | if (!(frame_status & DescOwn)) | |
1337 | break; | |
1338 | pkt_len = frame_status & 0x1fff; /* Chip omits the CRC. */ | |
1339 | if (netif_msg_rx_status(np)) | |
1340 | printk(KERN_DEBUG " netdev_rx() status was %8.8x.\n", | |
1341 | frame_status); | |
1342 | if (frame_status & 0x001f4000) { | |
1343 | /* There was a error. */ | |
1344 | if (netif_msg_rx_err(np)) | |
1345 | printk(KERN_DEBUG " netdev_rx() Rx error was %8.8x.\n", | |
1346 | frame_status); | |
553e2335 ED |
1347 | dev->stats.rx_errors++; |
1348 | if (frame_status & 0x00100000) | |
1349 | dev->stats.rx_length_errors++; | |
1350 | if (frame_status & 0x00010000) | |
1351 | dev->stats.rx_fifo_errors++; | |
1352 | if (frame_status & 0x00060000) | |
1353 | dev->stats.rx_frame_errors++; | |
1354 | if (frame_status & 0x00080000) | |
1355 | dev->stats.rx_crc_errors++; | |
1da177e4 LT |
1356 | if (frame_status & 0x00100000) { |
1357 | printk(KERN_WARNING "%s: Oversized Ethernet frame," | |
1358 | " status %8.8x.\n", | |
1359 | dev->name, frame_status); | |
1360 | } | |
1361 | } else { | |
1362 | struct sk_buff *skb; | |
1363 | #ifndef final_version | |
1364 | if (netif_msg_rx_status(np)) | |
1365 | printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d" | |
1366 | ", bogus_cnt %d.\n", | |
1367 | pkt_len, boguscnt); | |
1368 | #endif | |
1369 | /* Check if the packet is long enough to accept without copying | |
1370 | to a minimally-sized skbuff. */ | |
8e95a202 | 1371 | if (pkt_len < rx_copybreak && |
21a4e469 | 1372 | (skb = netdev_alloc_skb(dev, pkt_len + 2)) != NULL) { |
1da177e4 | 1373 | skb_reserve(skb, 2); /* 16 byte align the IP header */ |
0c8a745f DK |
1374 | dma_sync_single_for_cpu(&np->pci_dev->dev, |
1375 | le32_to_cpu(desc->frag[0].addr), | |
1376 | np->rx_buf_sz, DMA_FROM_DEVICE); | |
8c7b7faa | 1377 | skb_copy_to_linear_data(skb, np->rx_skbuff[entry]->data, pkt_len); |
0c8a745f DK |
1378 | dma_sync_single_for_device(&np->pci_dev->dev, |
1379 | le32_to_cpu(desc->frag[0].addr), | |
1380 | np->rx_buf_sz, DMA_FROM_DEVICE); | |
1da177e4 LT |
1381 | skb_put(skb, pkt_len); |
1382 | } else { | |
0c8a745f | 1383 | dma_unmap_single(&np->pci_dev->dev, |
14c9d9b0 | 1384 | le32_to_cpu(desc->frag[0].addr), |
0c8a745f | 1385 | np->rx_buf_sz, DMA_FROM_DEVICE); |
1da177e4 LT |
1386 | skb_put(skb = np->rx_skbuff[entry], pkt_len); |
1387 | np->rx_skbuff[entry] = NULL; | |
1388 | } | |
1389 | skb->protocol = eth_type_trans(skb, dev); | |
1390 | /* Note: checksum -> skb->ip_summed = CHECKSUM_UNNECESSARY; */ | |
1391 | netif_rx(skb); | |
1da177e4 LT |
1392 | } |
1393 | entry = (entry + 1) % RX_RING_SIZE; | |
1394 | received++; | |
1395 | } | |
1396 | np->cur_rx = entry; | |
1397 | refill_rx (dev); | |
1398 | np->budget -= received; | |
1399 | iowrite16(DEFAULT_INTR, ioaddr + IntrEnable); | |
1400 | return; | |
1401 | ||
1402 | not_done: | |
1403 | np->cur_rx = entry; | |
1404 | refill_rx (dev); | |
1405 | if (!received) | |
1406 | received = 1; | |
1407 | np->budget -= received; | |
1408 | if (np->budget <= 0) | |
1409 | np->budget = RX_BUDGET; | |
1410 | tasklet_schedule(&np->rx_tasklet); | |
1da177e4 LT |
1411 | } |
1412 | ||
1413 | static void refill_rx (struct net_device *dev) | |
1414 | { | |
1415 | struct netdev_private *np = netdev_priv(dev); | |
1416 | int entry; | |
1417 | int cnt = 0; | |
1418 | ||
1419 | /* Refill the Rx ring buffers. */ | |
1420 | for (;(np->cur_rx - np->dirty_rx + RX_RING_SIZE) % RX_RING_SIZE > 0; | |
1421 | np->dirty_rx = (np->dirty_rx + 1) % RX_RING_SIZE) { | |
1422 | struct sk_buff *skb; | |
1423 | entry = np->dirty_rx % RX_RING_SIZE; | |
1424 | if (np->rx_skbuff[entry] == NULL) { | |
21a4e469 | 1425 | skb = netdev_alloc_skb(dev, np->rx_buf_sz + 2); |
1da177e4 LT |
1426 | np->rx_skbuff[entry] = skb; |
1427 | if (skb == NULL) | |
1428 | break; /* Better luck next round. */ | |
1da177e4 LT |
1429 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ |
1430 | np->rx_ring[entry].frag[0].addr = cpu_to_le32( | |
0c8a745f DK |
1431 | dma_map_single(&np->pci_dev->dev, skb->data, |
1432 | np->rx_buf_sz, DMA_FROM_DEVICE)); | |
d91dc279 DK |
1433 | if (dma_mapping_error(&np->pci_dev->dev, |
1434 | np->rx_ring[entry].frag[0].addr)) { | |
1435 | dev_kfree_skb_irq(skb); | |
1436 | np->rx_skbuff[entry] = NULL; | |
1437 | break; | |
1438 | } | |
1da177e4 LT |
1439 | } |
1440 | /* Perhaps we need not reset this field. */ | |
1441 | np->rx_ring[entry].frag[0].length = | |
1442 | cpu_to_le32(np->rx_buf_sz | LastFrag); | |
1443 | np->rx_ring[entry].status = 0; | |
1444 | cnt++; | |
1445 | } | |
1da177e4 LT |
1446 | } |
1447 | static void netdev_error(struct net_device *dev, int intr_status) | |
1448 | { | |
1449 | struct netdev_private *np = netdev_priv(dev); | |
1450 | void __iomem *ioaddr = np->base; | |
1451 | u16 mii_ctl, mii_advertise, mii_lpa; | |
1452 | int speed; | |
1453 | ||
1454 | if (intr_status & LinkChange) { | |
50500155 DN |
1455 | if (mdio_wait_link(dev, 10) == 0) { |
1456 | printk(KERN_INFO "%s: Link up\n", dev->name); | |
1457 | if (np->an_enable) { | |
1458 | mii_advertise = mdio_read(dev, np->phys[0], | |
1459 | MII_ADVERTISE); | |
1460 | mii_lpa = mdio_read(dev, np->phys[0], MII_LPA); | |
1461 | mii_advertise &= mii_lpa; | |
1462 | printk(KERN_INFO "%s: Link changed: ", | |
1463 | dev->name); | |
1464 | if (mii_advertise & ADVERTISE_100FULL) { | |
1465 | np->speed = 100; | |
1466 | printk("100Mbps, full duplex\n"); | |
1467 | } else if (mii_advertise & ADVERTISE_100HALF) { | |
1468 | np->speed = 100; | |
1469 | printk("100Mbps, half duplex\n"); | |
1470 | } else if (mii_advertise & ADVERTISE_10FULL) { | |
1471 | np->speed = 10; | |
1472 | printk("10Mbps, full duplex\n"); | |
1473 | } else if (mii_advertise & ADVERTISE_10HALF) { | |
1474 | np->speed = 10; | |
1475 | printk("10Mbps, half duplex\n"); | |
1476 | } else | |
1477 | printk("\n"); | |
1da177e4 | 1478 | |
50500155 DN |
1479 | } else { |
1480 | mii_ctl = mdio_read(dev, np->phys[0], MII_BMCR); | |
1481 | speed = (mii_ctl & BMCR_SPEED100) ? 100 : 10; | |
1482 | np->speed = speed; | |
1483 | printk(KERN_INFO "%s: Link changed: %dMbps ,", | |
1484 | dev->name, speed); | |
1485 | printk("%s duplex.\n", | |
1486 | (mii_ctl & BMCR_FULLDPLX) ? | |
1487 | "full" : "half"); | |
1488 | } | |
1489 | check_duplex(dev); | |
1490 | if (np->flowctrl && np->mii_if.full_duplex) { | |
1491 | iowrite16(ioread16(ioaddr + MulticastFilter1+2) | 0x0200, | |
1492 | ioaddr + MulticastFilter1+2); | |
1493 | iowrite16(ioread16(ioaddr + MACCtrl0) | EnbFlowCtrl, | |
1494 | ioaddr + MACCtrl0); | |
1495 | } | |
1496 | netif_carrier_on(dev); | |
1da177e4 | 1497 | } else { |
50500155 DN |
1498 | printk(KERN_INFO "%s: Link down\n", dev->name); |
1499 | netif_carrier_off(dev); | |
1da177e4 LT |
1500 | } |
1501 | } | |
1502 | if (intr_status & StatsMax) { | |
1503 | get_stats(dev); | |
1504 | } | |
1505 | if (intr_status & IntrPCIErr) { | |
1506 | printk(KERN_ERR "%s: Something Wicked happened! %4.4x.\n", | |
1507 | dev->name, intr_status); | |
1508 | /* We must do a global reset of DMA to continue. */ | |
1509 | } | |
1510 | } | |
1511 | ||
1512 | static struct net_device_stats *get_stats(struct net_device *dev) | |
1513 | { | |
1514 | struct netdev_private *np = netdev_priv(dev); | |
1515 | void __iomem *ioaddr = np->base; | |
7b738b55 | 1516 | unsigned long flags; |
725a4a46 | 1517 | u8 late_coll, single_coll, mult_coll; |
1da177e4 | 1518 | |
7b738b55 | 1519 | spin_lock_irqsave(&np->statlock, flags); |
1da177e4 | 1520 | /* The chip only need report frame silently dropped. */ |
553e2335 ED |
1521 | dev->stats.rx_missed_errors += ioread8(ioaddr + RxMissed); |
1522 | dev->stats.tx_packets += ioread16(ioaddr + TxFramesOK); | |
1523 | dev->stats.rx_packets += ioread16(ioaddr + RxFramesOK); | |
553e2335 | 1524 | dev->stats.tx_carrier_errors += ioread8(ioaddr + StatsCarrierError); |
725a4a46 DK |
1525 | |
1526 | mult_coll = ioread8(ioaddr + StatsMultiColl); | |
1527 | np->xstats.tx_multiple_collisions += mult_coll; | |
1528 | single_coll = ioread8(ioaddr + StatsOneColl); | |
1529 | np->xstats.tx_single_collisions += single_coll; | |
1530 | late_coll = ioread8(ioaddr + StatsLateColl); | |
1531 | np->xstats.tx_late_collisions += late_coll; | |
1532 | dev->stats.collisions += mult_coll | |
1533 | + single_coll | |
1534 | + late_coll; | |
1535 | ||
1536 | np->xstats.tx_deferred += ioread8(ioaddr + StatsTxDefer); | |
1537 | np->xstats.tx_deferred_excessive += ioread8(ioaddr + StatsTxXSDefer); | |
1538 | np->xstats.tx_aborted += ioread8(ioaddr + StatsTxAbort); | |
1539 | np->xstats.tx_bcasts += ioread8(ioaddr + StatsBcastTx); | |
1540 | np->xstats.rx_bcasts += ioread8(ioaddr + StatsBcastRx); | |
1541 | np->xstats.tx_mcasts += ioread8(ioaddr + StatsMcastTx); | |
1542 | np->xstats.rx_mcasts += ioread8(ioaddr + StatsMcastRx); | |
1543 | ||
553e2335 ED |
1544 | dev->stats.tx_bytes += ioread16(ioaddr + TxOctetsLow); |
1545 | dev->stats.tx_bytes += ioread16(ioaddr + TxOctetsHigh) << 16; | |
1546 | dev->stats.rx_bytes += ioread16(ioaddr + RxOctetsLow); | |
1547 | dev->stats.rx_bytes += ioread16(ioaddr + RxOctetsHigh) << 16; | |
1da177e4 | 1548 | |
7b738b55 ED |
1549 | spin_unlock_irqrestore(&np->statlock, flags); |
1550 | ||
553e2335 | 1551 | return &dev->stats; |
1da177e4 LT |
1552 | } |
1553 | ||
1554 | static void set_rx_mode(struct net_device *dev) | |
1555 | { | |
1556 | struct netdev_private *np = netdev_priv(dev); | |
1557 | void __iomem *ioaddr = np->base; | |
1558 | u16 mc_filter[4]; /* Multicast hash filter */ | |
1559 | u32 rx_mode; | |
1560 | int i; | |
1561 | ||
1562 | if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ | |
1da177e4 LT |
1563 | memset(mc_filter, 0xff, sizeof(mc_filter)); |
1564 | rx_mode = AcceptBroadcast | AcceptMulticast | AcceptAll | AcceptMyPhys; | |
4cd24eaf | 1565 | } else if ((netdev_mc_count(dev) > multicast_filter_limit) || |
8e95a202 | 1566 | (dev->flags & IFF_ALLMULTI)) { |
1da177e4 LT |
1567 | /* Too many to match, or accept all multicasts. */ |
1568 | memset(mc_filter, 0xff, sizeof(mc_filter)); | |
1569 | rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys; | |
4cd24eaf | 1570 | } else if (!netdev_mc_empty(dev)) { |
22bedad3 | 1571 | struct netdev_hw_addr *ha; |
1da177e4 LT |
1572 | int bit; |
1573 | int index; | |
1574 | int crc; | |
1575 | memset (mc_filter, 0, sizeof (mc_filter)); | |
22bedad3 JP |
1576 | netdev_for_each_mc_addr(ha, dev) { |
1577 | crc = ether_crc_le(ETH_ALEN, ha->addr); | |
1da177e4 LT |
1578 | for (index=0, bit=0; bit < 6; bit++, crc <<= 1) |
1579 | if (crc & 0x80000000) index |= 1 << bit; | |
1580 | mc_filter[index/16] |= (1 << (index % 16)); | |
1581 | } | |
1582 | rx_mode = AcceptBroadcast | AcceptMultiHash | AcceptMyPhys; | |
1583 | } else { | |
1584 | iowrite8(AcceptBroadcast | AcceptMyPhys, ioaddr + RxMode); | |
1585 | return; | |
1586 | } | |
1587 | if (np->mii_if.full_duplex && np->flowctrl) | |
1588 | mc_filter[3] |= 0x0200; | |
1589 | ||
1590 | for (i = 0; i < 4; i++) | |
1591 | iowrite16(mc_filter[i], ioaddr + MulticastFilter0 + i*2); | |
1592 | iowrite8(rx_mode, ioaddr + RxMode); | |
1593 | } | |
1594 | ||
1595 | static int __set_mac_addr(struct net_device *dev) | |
1596 | { | |
1597 | struct netdev_private *np = netdev_priv(dev); | |
1598 | u16 addr16; | |
1599 | ||
1600 | addr16 = (dev->dev_addr[0] | (dev->dev_addr[1] << 8)); | |
1601 | iowrite16(addr16, np->base + StationAddr); | |
1602 | addr16 = (dev->dev_addr[2] | (dev->dev_addr[3] << 8)); | |
1603 | iowrite16(addr16, np->base + StationAddr+2); | |
1604 | addr16 = (dev->dev_addr[4] | (dev->dev_addr[5] << 8)); | |
1605 | iowrite16(addr16, np->base + StationAddr+4); | |
1606 | return 0; | |
1607 | } | |
1608 | ||
4b4f5467 DK |
1609 | /* Invoked with rtnl_lock held */ |
1610 | static int sundance_set_mac_addr(struct net_device *dev, void *data) | |
1611 | { | |
1612 | const struct sockaddr *addr = data; | |
1613 | ||
1614 | if (!is_valid_ether_addr(addr->sa_data)) | |
504f9b5a | 1615 | return -EADDRNOTAVAIL; |
4b4f5467 DK |
1616 | memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); |
1617 | __set_mac_addr(dev); | |
1618 | ||
1619 | return 0; | |
1620 | } | |
1621 | ||
725a4a46 DK |
1622 | static const struct { |
1623 | const char name[ETH_GSTRING_LEN]; | |
1624 | } sundance_stats[] = { | |
1625 | { "tx_multiple_collisions" }, | |
1626 | { "tx_single_collisions" }, | |
1627 | { "tx_late_collisions" }, | |
1628 | { "tx_deferred" }, | |
1629 | { "tx_deferred_excessive" }, | |
1630 | { "tx_aborted" }, | |
1631 | { "tx_bcasts" }, | |
1632 | { "rx_bcasts" }, | |
1633 | { "tx_mcasts" }, | |
1634 | { "rx_mcasts" }, | |
1635 | }; | |
1636 | ||
1da177e4 LT |
1637 | static int check_if_running(struct net_device *dev) |
1638 | { | |
1639 | if (!netif_running(dev)) | |
1640 | return -EINVAL; | |
1641 | return 0; | |
1642 | } | |
1643 | ||
1644 | static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) | |
1645 | { | |
1646 | struct netdev_private *np = netdev_priv(dev); | |
68aad78c RJ |
1647 | strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); |
1648 | strlcpy(info->version, DRV_VERSION, sizeof(info->version)); | |
1649 | strlcpy(info->bus_info, pci_name(np->pci_dev), sizeof(info->bus_info)); | |
1da177e4 LT |
1650 | } |
1651 | ||
1652 | static int get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) | |
1653 | { | |
1654 | struct netdev_private *np = netdev_priv(dev); | |
1655 | spin_lock_irq(&np->lock); | |
1656 | mii_ethtool_gset(&np->mii_if, ecmd); | |
1657 | spin_unlock_irq(&np->lock); | |
1658 | return 0; | |
1659 | } | |
1660 | ||
1661 | static int set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) | |
1662 | { | |
1663 | struct netdev_private *np = netdev_priv(dev); | |
1664 | int res; | |
1665 | spin_lock_irq(&np->lock); | |
1666 | res = mii_ethtool_sset(&np->mii_if, ecmd); | |
1667 | spin_unlock_irq(&np->lock); | |
1668 | return res; | |
1669 | } | |
1670 | ||
1671 | static int nway_reset(struct net_device *dev) | |
1672 | { | |
1673 | struct netdev_private *np = netdev_priv(dev); | |
1674 | return mii_nway_restart(&np->mii_if); | |
1675 | } | |
1676 | ||
1677 | static u32 get_link(struct net_device *dev) | |
1678 | { | |
1679 | struct netdev_private *np = netdev_priv(dev); | |
1680 | return mii_link_ok(&np->mii_if); | |
1681 | } | |
1682 | ||
1683 | static u32 get_msglevel(struct net_device *dev) | |
1684 | { | |
1685 | struct netdev_private *np = netdev_priv(dev); | |
1686 | return np->msg_enable; | |
1687 | } | |
1688 | ||
1689 | static void set_msglevel(struct net_device *dev, u32 val) | |
1690 | { | |
1691 | struct netdev_private *np = netdev_priv(dev); | |
1692 | np->msg_enable = val; | |
1693 | } | |
1694 | ||
725a4a46 DK |
1695 | static void get_strings(struct net_device *dev, u32 stringset, |
1696 | u8 *data) | |
1697 | { | |
1698 | if (stringset == ETH_SS_STATS) | |
1699 | memcpy(data, sundance_stats, sizeof(sundance_stats)); | |
1700 | } | |
1701 | ||
1702 | static int get_sset_count(struct net_device *dev, int sset) | |
1703 | { | |
1704 | switch (sset) { | |
1705 | case ETH_SS_STATS: | |
1706 | return ARRAY_SIZE(sundance_stats); | |
1707 | default: | |
1708 | return -EOPNOTSUPP; | |
1709 | } | |
1710 | } | |
1711 | ||
1712 | static void get_ethtool_stats(struct net_device *dev, | |
1713 | struct ethtool_stats *stats, u64 *data) | |
1714 | { | |
1715 | struct netdev_private *np = netdev_priv(dev); | |
1716 | int i = 0; | |
1717 | ||
1718 | get_stats(dev); | |
1719 | data[i++] = np->xstats.tx_multiple_collisions; | |
1720 | data[i++] = np->xstats.tx_single_collisions; | |
1721 | data[i++] = np->xstats.tx_late_collisions; | |
1722 | data[i++] = np->xstats.tx_deferred; | |
1723 | data[i++] = np->xstats.tx_deferred_excessive; | |
1724 | data[i++] = np->xstats.tx_aborted; | |
1725 | data[i++] = np->xstats.tx_bcasts; | |
1726 | data[i++] = np->xstats.rx_bcasts; | |
1727 | data[i++] = np->xstats.tx_mcasts; | |
1728 | data[i++] = np->xstats.rx_mcasts; | |
1729 | } | |
1730 | ||
f210e87b DK |
1731 | #ifdef CONFIG_PM |
1732 | ||
1733 | static void sundance_get_wol(struct net_device *dev, | |
1734 | struct ethtool_wolinfo *wol) | |
1735 | { | |
1736 | struct netdev_private *np = netdev_priv(dev); | |
1737 | void __iomem *ioaddr = np->base; | |
1738 | u8 wol_bits; | |
1739 | ||
1740 | wol->wolopts = 0; | |
1741 | ||
1742 | wol->supported = (WAKE_PHY | WAKE_MAGIC); | |
1743 | if (!np->wol_enabled) | |
1744 | return; | |
1745 | ||
1746 | wol_bits = ioread8(ioaddr + WakeEvent); | |
1747 | if (wol_bits & MagicPktEnable) | |
1748 | wol->wolopts |= WAKE_MAGIC; | |
1749 | if (wol_bits & LinkEventEnable) | |
1750 | wol->wolopts |= WAKE_PHY; | |
1751 | } | |
1752 | ||
1753 | static int sundance_set_wol(struct net_device *dev, | |
1754 | struct ethtool_wolinfo *wol) | |
1755 | { | |
1756 | struct netdev_private *np = netdev_priv(dev); | |
1757 | void __iomem *ioaddr = np->base; | |
1758 | u8 wol_bits; | |
1759 | ||
1760 | if (!device_can_wakeup(&np->pci_dev->dev)) | |
1761 | return -EOPNOTSUPP; | |
1762 | ||
1763 | np->wol_enabled = !!(wol->wolopts); | |
1764 | wol_bits = ioread8(ioaddr + WakeEvent); | |
1765 | wol_bits &= ~(WakePktEnable | MagicPktEnable | | |
1766 | LinkEventEnable | WolEnable); | |
1767 | ||
1768 | if (np->wol_enabled) { | |
1769 | if (wol->wolopts & WAKE_MAGIC) | |
1770 | wol_bits |= (MagicPktEnable | WolEnable); | |
1771 | if (wol->wolopts & WAKE_PHY) | |
1772 | wol_bits |= (LinkEventEnable | WolEnable); | |
1773 | } | |
1774 | iowrite8(wol_bits, ioaddr + WakeEvent); | |
1775 | ||
1776 | device_set_wakeup_enable(&np->pci_dev->dev, np->wol_enabled); | |
1777 | ||
1778 | return 0; | |
1779 | } | |
1780 | #else | |
1781 | #define sundance_get_wol NULL | |
1782 | #define sundance_set_wol NULL | |
1783 | #endif /* CONFIG_PM */ | |
1784 | ||
7282d491 | 1785 | static const struct ethtool_ops ethtool_ops = { |
1da177e4 LT |
1786 | .begin = check_if_running, |
1787 | .get_drvinfo = get_drvinfo, | |
1788 | .get_settings = get_settings, | |
1789 | .set_settings = set_settings, | |
1790 | .nway_reset = nway_reset, | |
1791 | .get_link = get_link, | |
f210e87b DK |
1792 | .get_wol = sundance_get_wol, |
1793 | .set_wol = sundance_set_wol, | |
1da177e4 LT |
1794 | .get_msglevel = get_msglevel, |
1795 | .set_msglevel = set_msglevel, | |
725a4a46 DK |
1796 | .get_strings = get_strings, |
1797 | .get_sset_count = get_sset_count, | |
1798 | .get_ethtool_stats = get_ethtool_stats, | |
1da177e4 LT |
1799 | }; |
1800 | ||
1801 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1802 | { | |
1803 | struct netdev_private *np = netdev_priv(dev); | |
1da177e4 | 1804 | int rc; |
1da177e4 LT |
1805 | |
1806 | if (!netif_running(dev)) | |
1807 | return -EINVAL; | |
1808 | ||
1809 | spin_lock_irq(&np->lock); | |
1810 | rc = generic_mii_ioctl(&np->mii_if, if_mii(rq), cmd, NULL); | |
1811 | spin_unlock_irq(&np->lock); | |
1da177e4 LT |
1812 | |
1813 | return rc; | |
1814 | } | |
1815 | ||
1816 | static int netdev_close(struct net_device *dev) | |
1817 | { | |
1818 | struct netdev_private *np = netdev_priv(dev); | |
1819 | void __iomem *ioaddr = np->base; | |
1820 | struct sk_buff *skb; | |
1821 | int i; | |
1822 | ||
31f817e9 JH |
1823 | /* Wait and kill tasklet */ |
1824 | tasklet_kill(&np->rx_tasklet); | |
1825 | tasklet_kill(&np->tx_tasklet); | |
1826 | np->cur_tx = 0; | |
1827 | np->dirty_tx = 0; | |
1828 | np->cur_task = 0; | |
bca79eb7 | 1829 | np->last_tx = NULL; |
31f817e9 | 1830 | |
1da177e4 LT |
1831 | netif_stop_queue(dev); |
1832 | ||
1833 | if (netif_msg_ifdown(np)) { | |
1834 | printk(KERN_DEBUG "%s: Shutting down ethercard, status was Tx %2.2x " | |
1835 | "Rx %4.4x Int %2.2x.\n", | |
1836 | dev->name, ioread8(ioaddr + TxStatus), | |
1837 | ioread32(ioaddr + RxStatus), ioread16(ioaddr + IntrStatus)); | |
1838 | printk(KERN_DEBUG "%s: Queue pointers were Tx %d / %d, Rx %d / %d.\n", | |
1839 | dev->name, np->cur_tx, np->dirty_tx, np->cur_rx, np->dirty_rx); | |
1840 | } | |
1841 | ||
1842 | /* Disable interrupts by clearing the interrupt mask. */ | |
1843 | iowrite16(0x0000, ioaddr + IntrEnable); | |
1844 | ||
acd70c2b JH |
1845 | /* Disable Rx and Tx DMA for safely release resource */ |
1846 | iowrite32(0x500, ioaddr + DMACtrl); | |
1847 | ||
1da177e4 LT |
1848 | /* Stop the chip's Tx and Rx processes. */ |
1849 | iowrite16(TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl1); | |
1850 | ||
31f817e9 JH |
1851 | for (i = 2000; i > 0; i--) { |
1852 | if ((ioread32(ioaddr + DMACtrl) & 0xc000) == 0) | |
1853 | break; | |
1854 | mdelay(1); | |
1855 | } | |
1856 | ||
1857 | iowrite16(GlobalReset | DMAReset | FIFOReset | NetworkReset, | |
24de5285 | 1858 | ioaddr + ASIC_HI_WORD(ASICCtrl)); |
31f817e9 JH |
1859 | |
1860 | for (i = 2000; i > 0; i--) { | |
24de5285 | 1861 | if ((ioread16(ioaddr + ASIC_HI_WORD(ASICCtrl)) & ResetBusy) == 0) |
31f817e9 JH |
1862 | break; |
1863 | mdelay(1); | |
1864 | } | |
1da177e4 LT |
1865 | |
1866 | #ifdef __i386__ | |
1867 | if (netif_msg_hw(np)) { | |
ad361c98 | 1868 | printk(KERN_DEBUG " Tx ring at %8.8x:\n", |
1da177e4 LT |
1869 | (int)(np->tx_ring_dma)); |
1870 | for (i = 0; i < TX_RING_SIZE; i++) | |
ad361c98 | 1871 | printk(KERN_DEBUG " #%d desc. %4.4x %8.8x %8.8x.\n", |
1da177e4 LT |
1872 | i, np->tx_ring[i].status, np->tx_ring[i].frag[0].addr, |
1873 | np->tx_ring[i].frag[0].length); | |
ad361c98 | 1874 | printk(KERN_DEBUG " Rx ring %8.8x:\n", |
1da177e4 LT |
1875 | (int)(np->rx_ring_dma)); |
1876 | for (i = 0; i < /*RX_RING_SIZE*/4 ; i++) { | |
1877 | printk(KERN_DEBUG " #%d desc. %4.4x %4.4x %8.8x\n", | |
1878 | i, np->rx_ring[i].status, np->rx_ring[i].frag[0].addr, | |
1879 | np->rx_ring[i].frag[0].length); | |
1880 | } | |
1881 | } | |
1882 | #endif /* __i386__ debugging only */ | |
1883 | ||
c514f285 | 1884 | free_irq(np->pci_dev->irq, dev); |
1da177e4 LT |
1885 | |
1886 | del_timer_sync(&np->timer); | |
1887 | ||
1888 | /* Free all the skbuffs in the Rx queue. */ | |
1889 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1890 | np->rx_ring[i].status = 0; | |
1da177e4 LT |
1891 | skb = np->rx_skbuff[i]; |
1892 | if (skb) { | |
0c8a745f | 1893 | dma_unmap_single(&np->pci_dev->dev, |
14c9d9b0 | 1894 | le32_to_cpu(np->rx_ring[i].frag[0].addr), |
0c8a745f | 1895 | np->rx_buf_sz, DMA_FROM_DEVICE); |
1da177e4 LT |
1896 | dev_kfree_skb(skb); |
1897 | np->rx_skbuff[i] = NULL; | |
1898 | } | |
14c9d9b0 | 1899 | np->rx_ring[i].frag[0].addr = cpu_to_le32(0xBADF00D0); /* poison */ |
1da177e4 LT |
1900 | } |
1901 | for (i = 0; i < TX_RING_SIZE; i++) { | |
31f817e9 | 1902 | np->tx_ring[i].next_desc = 0; |
1da177e4 LT |
1903 | skb = np->tx_skbuff[i]; |
1904 | if (skb) { | |
0c8a745f | 1905 | dma_unmap_single(&np->pci_dev->dev, |
14c9d9b0 | 1906 | le32_to_cpu(np->tx_ring[i].frag[0].addr), |
0c8a745f | 1907 | skb->len, DMA_TO_DEVICE); |
1da177e4 LT |
1908 | dev_kfree_skb(skb); |
1909 | np->tx_skbuff[i] = NULL; | |
1910 | } | |
1911 | } | |
1912 | ||
1913 | return 0; | |
1914 | } | |
1915 | ||
64bc40de | 1916 | static void sundance_remove1(struct pci_dev *pdev) |
1da177e4 LT |
1917 | { |
1918 | struct net_device *dev = pci_get_drvdata(pdev); | |
1919 | ||
1920 | if (dev) { | |
0c8a745f DK |
1921 | struct netdev_private *np = netdev_priv(dev); |
1922 | unregister_netdev(dev); | |
1923 | dma_free_coherent(&pdev->dev, RX_TOTAL_SIZE, | |
1924 | np->rx_ring, np->rx_ring_dma); | |
1925 | dma_free_coherent(&pdev->dev, TX_TOTAL_SIZE, | |
1926 | np->tx_ring, np->tx_ring_dma); | |
1927 | pci_iounmap(pdev, np->base); | |
1928 | pci_release_regions(pdev); | |
1929 | free_netdev(dev); | |
1930 | pci_set_drvdata(pdev, NULL); | |
1da177e4 LT |
1931 | } |
1932 | } | |
1933 | ||
61a21455 DK |
1934 | #ifdef CONFIG_PM |
1935 | ||
1936 | static int sundance_suspend(struct pci_dev *pci_dev, pm_message_t state) | |
1937 | { | |
1938 | struct net_device *dev = pci_get_drvdata(pci_dev); | |
f210e87b DK |
1939 | struct netdev_private *np = netdev_priv(dev); |
1940 | void __iomem *ioaddr = np->base; | |
61a21455 DK |
1941 | |
1942 | if (!netif_running(dev)) | |
1943 | return 0; | |
1944 | ||
1945 | netdev_close(dev); | |
1946 | netif_device_detach(dev); | |
1947 | ||
1948 | pci_save_state(pci_dev); | |
f210e87b DK |
1949 | if (np->wol_enabled) { |
1950 | iowrite8(AcceptBroadcast | AcceptMyPhys, ioaddr + RxMode); | |
1951 | iowrite16(RxEnable, ioaddr + MACCtrl1); | |
1952 | } | |
1953 | pci_enable_wake(pci_dev, pci_choose_state(pci_dev, state), | |
1954 | np->wol_enabled); | |
61a21455 DK |
1955 | pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state)); |
1956 | ||
1957 | return 0; | |
1958 | } | |
1959 | ||
1960 | static int sundance_resume(struct pci_dev *pci_dev) | |
1961 | { | |
1962 | struct net_device *dev = pci_get_drvdata(pci_dev); | |
1963 | int err = 0; | |
1964 | ||
1965 | if (!netif_running(dev)) | |
1966 | return 0; | |
1967 | ||
1968 | pci_set_power_state(pci_dev, PCI_D0); | |
1969 | pci_restore_state(pci_dev); | |
f210e87b | 1970 | pci_enable_wake(pci_dev, PCI_D0, 0); |
61a21455 DK |
1971 | |
1972 | err = netdev_open(dev); | |
1973 | if (err) { | |
1974 | printk(KERN_ERR "%s: Can't resume interface!\n", | |
1975 | dev->name); | |
1976 | goto out; | |
1977 | } | |
1978 | ||
1979 | netif_device_attach(dev); | |
1980 | ||
1981 | out: | |
1982 | return err; | |
1983 | } | |
1984 | ||
1985 | #endif /* CONFIG_PM */ | |
1986 | ||
1da177e4 LT |
1987 | static struct pci_driver sundance_driver = { |
1988 | .name = DRV_NAME, | |
1989 | .id_table = sundance_pci_tbl, | |
1990 | .probe = sundance_probe1, | |
64bc40de | 1991 | .remove = sundance_remove1, |
61a21455 DK |
1992 | #ifdef CONFIG_PM |
1993 | .suspend = sundance_suspend, | |
1994 | .resume = sundance_resume, | |
1995 | #endif /* CONFIG_PM */ | |
1da177e4 LT |
1996 | }; |
1997 | ||
1998 | static int __init sundance_init(void) | |
1999 | { | |
2000 | /* when a module, this is printed whether or not devices are found in probe */ | |
2001 | #ifdef MODULE | |
2002 | printk(version); | |
2003 | #endif | |
29917620 | 2004 | return pci_register_driver(&sundance_driver); |
1da177e4 LT |
2005 | } |
2006 | ||
2007 | static void __exit sundance_exit(void) | |
2008 | { | |
2009 | pci_unregister_driver(&sundance_driver); | |
2010 | } | |
2011 | ||
2012 | module_init(sundance_init); | |
2013 | module_exit(sundance_exit); | |
2014 | ||
2015 |