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7a3c66e2 DS |
1 | /* |
2 | * Micrel KS8695 (Centaur) Ethernet. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License as | |
6 | * published by the Free Software Foundation; either version 2 of the | |
7 | * License, or (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * General Public License for more details. | |
13 | * | |
14 | * Copyright 2008 Simtec Electronics | |
15 | * Daniel Silverstone <dsilvers@simtec.co.uk> | |
16 | * Vincent Sanders <vince@simtec.co.uk> | |
17 | */ | |
18 | ||
19 | #include <linux/module.h> | |
20 | #include <linux/ioport.h> | |
21 | #include <linux/netdevice.h> | |
22 | #include <linux/etherdevice.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/skbuff.h> | |
25 | #include <linux/spinlock.h> | |
26 | #include <linux/crc32.h> | |
27 | #include <linux/mii.h> | |
28 | #include <linux/ethtool.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/platform_device.h> | |
31 | #include <linux/irq.h> | |
7a3c66e2 DS |
32 | #include <linux/io.h> |
33 | ||
34 | #include <asm/irq.h> | |
35 | ||
36 | #include <mach/regs-switch.h> | |
37 | #include <mach/regs-misc.h> | |
38 | ||
39 | #include "ks8695net.h" | |
40 | ||
41 | #define MODULENAME "ks8695_ether" | |
42 | #define MODULEVERSION "1.01" | |
43 | ||
44 | /* | |
45 | * Transmit and device reset timeout, default 5 seconds. | |
46 | */ | |
47 | static int watchdog = 5000; | |
48 | ||
49 | /* Hardware structures */ | |
50 | ||
51 | /** | |
52 | * struct rx_ring_desc - Receive descriptor ring element | |
53 | * @status: The status of the descriptor element (E.g. who owns it) | |
54 | * @length: The number of bytes in the block pointed to by data_ptr | |
55 | * @data_ptr: The physical address of the data block to receive into | |
56 | * @next_desc: The physical address of the next descriptor element. | |
57 | */ | |
58 | struct rx_ring_desc { | |
59 | __le32 status; | |
60 | __le32 length; | |
61 | __le32 data_ptr; | |
62 | __le32 next_desc; | |
63 | }; | |
64 | ||
65 | /** | |
66 | * struct tx_ring_desc - Transmit descriptor ring element | |
67 | * @owner: Who owns the descriptor | |
68 | * @status: The number of bytes in the block pointed to by data_ptr | |
69 | * @data_ptr: The physical address of the data block to receive into | |
70 | * @next_desc: The physical address of the next descriptor element. | |
71 | */ | |
72 | struct tx_ring_desc { | |
73 | __le32 owner; | |
74 | __le32 status; | |
75 | __le32 data_ptr; | |
76 | __le32 next_desc; | |
77 | }; | |
78 | ||
79 | /** | |
80 | * struct ks8695_skbuff - sk_buff wrapper for rx/tx rings. | |
81 | * @skb: The buffer in the ring | |
82 | * @dma_ptr: The mapped DMA pointer of the buffer | |
83 | * @length: The number of bytes mapped to dma_ptr | |
84 | */ | |
85 | struct ks8695_skbuff { | |
86 | struct sk_buff *skb; | |
87 | dma_addr_t dma_ptr; | |
88 | u32 length; | |
89 | }; | |
90 | ||
91 | /* Private device structure */ | |
92 | ||
93 | #define MAX_TX_DESC 8 | |
94 | #define MAX_TX_DESC_MASK 0x7 | |
95 | #define MAX_RX_DESC 16 | |
96 | #define MAX_RX_DESC_MASK 0xf | |
97 | ||
98 | #define MAX_RXBUF_SIZE 0x700 | |
99 | ||
100 | #define TX_RING_DMA_SIZE (sizeof(struct tx_ring_desc) * MAX_TX_DESC) | |
101 | #define RX_RING_DMA_SIZE (sizeof(struct rx_ring_desc) * MAX_RX_DESC) | |
102 | #define RING_DMA_SIZE (TX_RING_DMA_SIZE + RX_RING_DMA_SIZE) | |
103 | ||
104 | /** | |
105 | * enum ks8695_dtype - Device type | |
106 | * @KS8695_DTYPE_WAN: This device is a WAN interface | |
107 | * @KS8695_DTYPE_LAN: This device is a LAN interface | |
108 | * @KS8695_DTYPE_HPNA: This device is an HPNA interface | |
109 | */ | |
110 | enum ks8695_dtype { | |
111 | KS8695_DTYPE_WAN, | |
112 | KS8695_DTYPE_LAN, | |
113 | KS8695_DTYPE_HPNA, | |
114 | }; | |
115 | ||
116 | /** | |
117 | * struct ks8695_priv - Private data for the KS8695 Ethernet | |
118 | * @in_suspend: Flag to indicate if we're suspending/resuming | |
119 | * @ndev: The net_device for this interface | |
120 | * @dev: The platform device object for this interface | |
121 | * @dtype: The type of this device | |
122 | * @io_regs: The ioremapped registers for this interface | |
123 | * @rx_irq_name: The textual name of the RX IRQ from the platform data | |
124 | * @tx_irq_name: The textual name of the TX IRQ from the platform data | |
125 | * @link_irq_name: The textual name of the link IRQ from the | |
126 | * platform data if available | |
127 | * @rx_irq: The IRQ number for the RX IRQ | |
128 | * @tx_irq: The IRQ number for the TX IRQ | |
129 | * @link_irq: The IRQ number for the link IRQ if available | |
130 | * @regs_req: The resource request for the registers region | |
131 | * @phyiface_req: The resource request for the phy/switch region | |
132 | * if available | |
133 | * @phyiface_regs: The ioremapped registers for the phy/switch if available | |
134 | * @ring_base: The base pointer of the dma coherent memory for the rings | |
135 | * @ring_base_dma: The DMA mapped equivalent of ring_base | |
136 | * @tx_ring: The pointer in ring_base of the TX ring | |
137 | * @tx_ring_used: The number of slots in the TX ring which are occupied | |
138 | * @tx_ring_next_slot: The next slot to fill in the TX ring | |
139 | * @tx_ring_dma: The DMA mapped equivalent of tx_ring | |
140 | * @tx_buffers: The sk_buff mappings for the TX ring | |
141 | * @txq_lock: A lock to protect the tx_buffers tx_ring_used etc variables | |
142 | * @rx_ring: The pointer in ring_base of the RX ring | |
143 | * @rx_ring_dma: The DMA mapped equivalent of rx_ring | |
144 | * @rx_buffers: The sk_buff mappings for the RX ring | |
145 | * @next_rx_desc_read: The next RX descriptor to read from on IRQ | |
146 | * @msg_enable: The flags for which messages to emit | |
147 | */ | |
148 | struct ks8695_priv { | |
149 | int in_suspend; | |
150 | struct net_device *ndev; | |
151 | struct device *dev; | |
152 | enum ks8695_dtype dtype; | |
153 | void __iomem *io_regs; | |
154 | ||
155 | const char *rx_irq_name, *tx_irq_name, *link_irq_name; | |
156 | int rx_irq, tx_irq, link_irq; | |
157 | ||
158 | struct resource *regs_req, *phyiface_req; | |
159 | void __iomem *phyiface_regs; | |
160 | ||
161 | void *ring_base; | |
162 | dma_addr_t ring_base_dma; | |
163 | ||
164 | struct tx_ring_desc *tx_ring; | |
165 | int tx_ring_used; | |
166 | int tx_ring_next_slot; | |
167 | dma_addr_t tx_ring_dma; | |
168 | struct ks8695_skbuff tx_buffers[MAX_TX_DESC]; | |
169 | spinlock_t txq_lock; | |
170 | ||
171 | struct rx_ring_desc *rx_ring; | |
172 | dma_addr_t rx_ring_dma; | |
173 | struct ks8695_skbuff rx_buffers[MAX_RX_DESC]; | |
174 | int next_rx_desc_read; | |
175 | ||
176 | int msg_enable; | |
177 | }; | |
178 | ||
179 | /* Register access */ | |
180 | ||
181 | /** | |
182 | * ks8695_readreg - Read from a KS8695 ethernet register | |
183 | * @ksp: The device to read from | |
184 | * @reg: The register to read | |
185 | */ | |
186 | static inline u32 | |
187 | ks8695_readreg(struct ks8695_priv *ksp, int reg) | |
188 | { | |
189 | return readl(ksp->io_regs + reg); | |
190 | } | |
191 | ||
192 | /** | |
193 | * ks8695_writereg - Write to a KS8695 ethernet register | |
194 | * @ksp: The device to write to | |
195 | * @reg: The register to write | |
196 | * @value: The value to write to the register | |
197 | */ | |
198 | static inline void | |
199 | ks8695_writereg(struct ks8695_priv *ksp, int reg, u32 value) | |
200 | { | |
201 | writel(value, ksp->io_regs + reg); | |
202 | } | |
203 | ||
204 | /* Utility functions */ | |
205 | ||
206 | /** | |
207 | * ks8695_port_type - Retrieve port-type as user-friendly string | |
208 | * @ksp: The device to return the type for | |
209 | * | |
210 | * Returns a string indicating which of the WAN, LAN or HPNA | |
211 | * ports this device is likely to represent. | |
212 | */ | |
213 | static const char * | |
214 | ks8695_port_type(struct ks8695_priv *ksp) | |
215 | { | |
216 | switch (ksp->dtype) { | |
217 | case KS8695_DTYPE_LAN: | |
218 | return "LAN"; | |
219 | case KS8695_DTYPE_WAN: | |
220 | return "WAN"; | |
221 | case KS8695_DTYPE_HPNA: | |
222 | return "HPNA"; | |
223 | } | |
224 | ||
225 | return "UNKNOWN"; | |
226 | } | |
227 | ||
228 | /** | |
229 | * ks8695_update_mac - Update the MAC registers in the device | |
230 | * @ksp: The device to update | |
231 | * | |
232 | * Updates the MAC registers in the KS8695 device from the address in the | |
233 | * net_device structure associated with this interface. | |
234 | */ | |
235 | static void | |
236 | ks8695_update_mac(struct ks8695_priv *ksp) | |
237 | { | |
238 | /* Update the HW with the MAC from the net_device */ | |
239 | struct net_device *ndev = ksp->ndev; | |
240 | u32 machigh, maclow; | |
241 | ||
242 | maclow = ((ndev->dev_addr[2] << 24) | (ndev->dev_addr[3] << 16) | | |
243 | (ndev->dev_addr[4] << 8) | (ndev->dev_addr[5] << 0)); | |
244 | machigh = ((ndev->dev_addr[0] << 8) | (ndev->dev_addr[1] << 0)); | |
245 | ||
246 | ks8695_writereg(ksp, KS8695_MAL, maclow); | |
247 | ks8695_writereg(ksp, KS8695_MAH, machigh); | |
248 | ||
249 | } | |
250 | ||
251 | /** | |
252 | * ks8695_refill_rxbuffers - Re-fill the RX buffer ring | |
253 | * @ksp: The device to refill | |
254 | * | |
255 | * Iterates the RX ring of the device looking for empty slots. | |
256 | * For each empty slot, we allocate and map a new SKB and give it | |
257 | * to the hardware. | |
258 | * This can be called from interrupt context safely. | |
259 | */ | |
260 | static void | |
261 | ks8695_refill_rxbuffers(struct ks8695_priv *ksp) | |
262 | { | |
263 | /* Run around the RX ring, filling in any missing sk_buff's */ | |
264 | int buff_n; | |
265 | ||
266 | for (buff_n = 0; buff_n < MAX_RX_DESC; ++buff_n) { | |
267 | if (!ksp->rx_buffers[buff_n].skb) { | |
268 | struct sk_buff *skb = dev_alloc_skb(MAX_RXBUF_SIZE); | |
269 | dma_addr_t mapping; | |
270 | ||
271 | ksp->rx_buffers[buff_n].skb = skb; | |
272 | if (skb == NULL) { | |
273 | /* Failed to allocate one, perhaps | |
274 | * we'll try again later. | |
275 | */ | |
276 | break; | |
277 | } | |
278 | ||
279 | mapping = dma_map_single(ksp->dev, skb->data, | |
280 | MAX_RXBUF_SIZE, | |
281 | DMA_FROM_DEVICE); | |
282 | if (unlikely(dma_mapping_error(ksp->dev, mapping))) { | |
283 | /* Failed to DMA map this SKB, try later */ | |
284 | dev_kfree_skb_irq(skb); | |
285 | ksp->rx_buffers[buff_n].skb = NULL; | |
286 | break; | |
287 | } | |
288 | ksp->rx_buffers[buff_n].dma_ptr = mapping; | |
289 | skb->dev = ksp->ndev; | |
290 | ksp->rx_buffers[buff_n].length = MAX_RXBUF_SIZE; | |
291 | ||
292 | /* Record this into the DMA ring */ | |
293 | ksp->rx_ring[buff_n].data_ptr = cpu_to_le32(mapping); | |
294 | ksp->rx_ring[buff_n].length = | |
295 | cpu_to_le32(MAX_RXBUF_SIZE); | |
296 | ||
297 | wmb(); | |
298 | ||
299 | /* And give ownership over to the hardware */ | |
300 | ksp->rx_ring[buff_n].status = cpu_to_le32(RDES_OWN); | |
301 | } | |
302 | } | |
303 | } | |
304 | ||
305 | /* Maximum number of multicast addresses which the KS8695 HW supports */ | |
306 | #define KS8695_NR_ADDRESSES 16 | |
307 | ||
308 | /** | |
309 | * ks8695_init_partial_multicast - Init the mcast addr registers | |
310 | * @ksp: The device to initialise | |
311 | * @addr: The multicast address list to use | |
312 | * @nr_addr: The number of addresses in the list | |
313 | * | |
314 | * This routine is a helper for ks8695_set_multicast - it writes | |
315 | * the additional-address registers in the KS8695 ethernet device | |
316 | * and cleans up any others left behind. | |
317 | */ | |
318 | static void | |
319 | ks8695_init_partial_multicast(struct ks8695_priv *ksp, | |
320 | struct dev_mc_list *addr, | |
321 | int nr_addr) | |
322 | { | |
323 | u32 low, high; | |
324 | int i; | |
325 | ||
326 | for (i = 0; i < nr_addr; i++, addr = addr->next) { | |
327 | /* Ran out of addresses? */ | |
328 | if (!addr) | |
329 | break; | |
330 | /* Ran out of space in chip? */ | |
331 | BUG_ON(i == KS8695_NR_ADDRESSES); | |
332 | ||
333 | low = (addr->dmi_addr[2] << 24) | (addr->dmi_addr[3] << 16) | | |
334 | (addr->dmi_addr[4] << 8) | (addr->dmi_addr[5]); | |
335 | high = (addr->dmi_addr[0] << 8) | (addr->dmi_addr[1]); | |
336 | ||
337 | ks8695_writereg(ksp, KS8695_AAL_(i), low); | |
338 | ks8695_writereg(ksp, KS8695_AAH_(i), AAH_E | high); | |
339 | } | |
340 | ||
341 | /* Clear the remaining Additional Station Addresses */ | |
342 | for (; i < KS8695_NR_ADDRESSES; i++) { | |
343 | ks8695_writereg(ksp, KS8695_AAL_(i), 0); | |
344 | ks8695_writereg(ksp, KS8695_AAH_(i), 0); | |
345 | } | |
346 | } | |
347 | ||
348 | /* Interrupt handling */ | |
349 | ||
350 | /** | |
351 | * ks8695_tx_irq - Transmit IRQ handler | |
352 | * @irq: The IRQ which went off (ignored) | |
353 | * @dev_id: The net_device for the interrupt | |
354 | * | |
355 | * Process the TX ring, clearing out any transmitted slots. | |
356 | * Allows the net_device to pass us new packets once slots are | |
357 | * freed. | |
358 | */ | |
359 | static irqreturn_t | |
360 | ks8695_tx_irq(int irq, void *dev_id) | |
361 | { | |
362 | struct net_device *ndev = (struct net_device *)dev_id; | |
363 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
364 | int buff_n; | |
365 | ||
366 | for (buff_n = 0; buff_n < MAX_TX_DESC; ++buff_n) { | |
367 | if (ksp->tx_buffers[buff_n].skb && | |
368 | !(ksp->tx_ring[buff_n].owner & cpu_to_le32(TDES_OWN))) { | |
369 | rmb(); | |
370 | /* An SKB which is not owned by HW is present */ | |
371 | /* Update the stats for the net_device */ | |
372 | ndev->stats.tx_packets++; | |
373 | ndev->stats.tx_bytes += ksp->tx_buffers[buff_n].length; | |
374 | ||
375 | /* Free the packet from the ring */ | |
376 | ksp->tx_ring[buff_n].data_ptr = 0; | |
377 | ||
378 | /* Free the sk_buff */ | |
379 | dma_unmap_single(ksp->dev, | |
380 | ksp->tx_buffers[buff_n].dma_ptr, | |
381 | ksp->tx_buffers[buff_n].length, | |
382 | DMA_TO_DEVICE); | |
383 | dev_kfree_skb_irq(ksp->tx_buffers[buff_n].skb); | |
384 | ksp->tx_buffers[buff_n].skb = NULL; | |
385 | ksp->tx_ring_used--; | |
386 | } | |
387 | } | |
388 | ||
389 | netif_wake_queue(ndev); | |
390 | ||
391 | return IRQ_HANDLED; | |
392 | } | |
393 | ||
394 | /** | |
395 | * ks8695_rx_irq - Receive IRQ handler | |
396 | * @irq: The IRQ which went off (ignored) | |
397 | * @dev_id: The net_device for the interrupt | |
398 | * | |
399 | * Process the RX ring, passing any received packets up to the | |
400 | * host. If we received anything other than errors, we then | |
401 | * refill the ring. | |
402 | */ | |
403 | static irqreturn_t | |
404 | ks8695_rx_irq(int irq, void *dev_id) | |
405 | { | |
406 | struct net_device *ndev = (struct net_device *)dev_id; | |
407 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
408 | struct sk_buff *skb; | |
409 | int buff_n; | |
410 | u32 flags; | |
411 | int pktlen; | |
412 | int last_rx_processed = -1; | |
413 | ||
414 | buff_n = ksp->next_rx_desc_read; | |
415 | do { | |
416 | if (ksp->rx_buffers[buff_n].skb && | |
417 | !(ksp->rx_ring[buff_n].status & cpu_to_le32(RDES_OWN))) { | |
418 | rmb(); | |
419 | flags = le32_to_cpu(ksp->rx_ring[buff_n].status); | |
420 | /* Found an SKB which we own, this means we | |
421 | * received a packet | |
422 | */ | |
423 | if ((flags & (RDES_FS | RDES_LS)) != | |
424 | (RDES_FS | RDES_LS)) { | |
425 | /* This packet is not the first and | |
426 | * the last segment. Therefore it is | |
427 | * a "spanning" packet and we can't | |
428 | * handle it | |
429 | */ | |
430 | goto rx_failure; | |
431 | } | |
432 | ||
433 | if (flags & (RDES_ES | RDES_RE)) { | |
434 | /* It's an error packet */ | |
435 | ndev->stats.rx_errors++; | |
436 | if (flags & RDES_TL) | |
437 | ndev->stats.rx_length_errors++; | |
438 | if (flags & RDES_RF) | |
439 | ndev->stats.rx_length_errors++; | |
440 | if (flags & RDES_CE) | |
441 | ndev->stats.rx_crc_errors++; | |
442 | if (flags & RDES_RE) | |
443 | ndev->stats.rx_missed_errors++; | |
444 | ||
445 | goto rx_failure; | |
446 | } | |
447 | ||
448 | pktlen = flags & RDES_FLEN; | |
449 | pktlen -= 4; /* Drop the CRC */ | |
450 | ||
451 | /* Retrieve the sk_buff */ | |
452 | skb = ksp->rx_buffers[buff_n].skb; | |
453 | ||
454 | /* Clear it from the ring */ | |
455 | ksp->rx_buffers[buff_n].skb = NULL; | |
456 | ksp->rx_ring[buff_n].data_ptr = 0; | |
457 | ||
458 | /* Unmap the SKB */ | |
459 | dma_unmap_single(ksp->dev, | |
460 | ksp->rx_buffers[buff_n].dma_ptr, | |
461 | ksp->rx_buffers[buff_n].length, | |
462 | DMA_FROM_DEVICE); | |
463 | ||
464 | /* Relinquish the SKB to the network layer */ | |
465 | skb_put(skb, pktlen); | |
466 | skb->protocol = eth_type_trans(skb, ndev); | |
467 | netif_rx(skb); | |
468 | ||
469 | /* Record stats */ | |
470 | ndev->last_rx = jiffies; | |
471 | ndev->stats.rx_packets++; | |
472 | ndev->stats.rx_bytes += pktlen; | |
473 | goto rx_finished; | |
474 | ||
475 | rx_failure: | |
476 | /* This ring entry is an error, but we can | |
477 | * re-use the skb | |
478 | */ | |
479 | /* Give the ring entry back to the hardware */ | |
480 | ksp->rx_ring[buff_n].status = cpu_to_le32(RDES_OWN); | |
481 | rx_finished: | |
482 | /* And note this as processed so we can start | |
483 | * from here next time | |
484 | */ | |
485 | last_rx_processed = buff_n; | |
486 | } else { | |
487 | /* Ran out of things to process, stop now */ | |
488 | break; | |
489 | } | |
490 | buff_n = (buff_n + 1) & MAX_RX_DESC_MASK; | |
491 | } while (buff_n != ksp->next_rx_desc_read); | |
492 | ||
493 | /* And note which RX descriptor we last did anything with */ | |
494 | if (likely(last_rx_processed != -1)) | |
495 | ksp->next_rx_desc_read = | |
496 | (last_rx_processed + 1) & MAX_RX_DESC_MASK; | |
497 | ||
498 | /* And refill the buffers */ | |
499 | ks8695_refill_rxbuffers(ksp); | |
500 | ||
501 | /* Kick the RX DMA engine, in case it became suspended */ | |
502 | ks8695_writereg(ksp, KS8695_DRSC, 0); | |
503 | ||
504 | return IRQ_HANDLED; | |
505 | } | |
506 | ||
507 | /** | |
508 | * ks8695_link_irq - Link change IRQ handler | |
509 | * @irq: The IRQ which went off (ignored) | |
510 | * @dev_id: The net_device for the interrupt | |
511 | * | |
512 | * The WAN interface can generate an IRQ when the link changes, | |
513 | * report this to the net layer and the user. | |
514 | */ | |
515 | static irqreturn_t | |
516 | ks8695_link_irq(int irq, void *dev_id) | |
517 | { | |
518 | struct net_device *ndev = (struct net_device *)dev_id; | |
519 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
520 | u32 ctrl; | |
521 | ||
522 | ctrl = readl(ksp->phyiface_regs + KS8695_WMC); | |
523 | if (ctrl & WMC_WLS) { | |
524 | netif_carrier_on(ndev); | |
525 | if (netif_msg_link(ksp)) | |
526 | dev_info(ksp->dev, | |
527 | "%s: Link is now up (10%sMbps/%s-duplex)\n", | |
528 | ndev->name, | |
529 | (ctrl & WMC_WSS) ? "0" : "", | |
530 | (ctrl & WMC_WDS) ? "Full" : "Half"); | |
531 | } else { | |
532 | netif_carrier_off(ndev); | |
533 | if (netif_msg_link(ksp)) | |
534 | dev_info(ksp->dev, "%s: Link is now down.\n", | |
535 | ndev->name); | |
536 | } | |
537 | ||
538 | return IRQ_HANDLED; | |
539 | } | |
540 | ||
541 | ||
542 | /* KS8695 Device functions */ | |
543 | ||
544 | /** | |
545 | * ks8695_reset - Reset a KS8695 ethernet interface | |
546 | * @ksp: The interface to reset | |
547 | * | |
548 | * Perform an engine reset of the interface and re-program it | |
549 | * with sensible defaults. | |
550 | */ | |
551 | static void | |
552 | ks8695_reset(struct ks8695_priv *ksp) | |
553 | { | |
554 | int reset_timeout = watchdog; | |
555 | /* Issue the reset via the TX DMA control register */ | |
556 | ks8695_writereg(ksp, KS8695_DTXC, DTXC_TRST); | |
557 | while (reset_timeout--) { | |
558 | if (!(ks8695_readreg(ksp, KS8695_DTXC) & DTXC_TRST)) | |
559 | break; | |
560 | msleep(1); | |
561 | } | |
562 | ||
563 | if (reset_timeout == 0) { | |
564 | dev_crit(ksp->dev, | |
565 | "Timeout waiting for DMA engines to reset\n"); | |
566 | /* And blithely carry on */ | |
567 | } | |
568 | ||
569 | /* Definitely wait long enough before attempting to program | |
570 | * the engines | |
571 | */ | |
572 | msleep(10); | |
573 | ||
574 | /* RX: unicast and broadcast */ | |
575 | ks8695_writereg(ksp, KS8695_DRXC, DRXC_RU | DRXC_RB); | |
576 | /* TX: pad and add CRC */ | |
577 | ks8695_writereg(ksp, KS8695_DTXC, DTXC_TEP | DTXC_TAC); | |
578 | } | |
579 | ||
580 | /** | |
581 | * ks8695_shutdown - Shut down a KS8695 ethernet interface | |
582 | * @ksp: The interface to shut down | |
583 | * | |
584 | * This disables packet RX/TX, cleans up IRQs, drains the rings, | |
585 | * and basically places the interface into a clean shutdown | |
586 | * state. | |
587 | */ | |
588 | static void | |
589 | ks8695_shutdown(struct ks8695_priv *ksp) | |
590 | { | |
591 | u32 ctrl; | |
592 | int buff_n; | |
593 | ||
594 | /* Disable packet transmission */ | |
595 | ctrl = ks8695_readreg(ksp, KS8695_DTXC); | |
596 | ks8695_writereg(ksp, KS8695_DTXC, ctrl & ~DTXC_TE); | |
597 | ||
598 | /* Disable packet reception */ | |
599 | ctrl = ks8695_readreg(ksp, KS8695_DRXC); | |
600 | ks8695_writereg(ksp, KS8695_DRXC, ctrl & ~DRXC_RE); | |
601 | ||
602 | /* Release the IRQs */ | |
603 | free_irq(ksp->rx_irq, ksp->ndev); | |
604 | free_irq(ksp->tx_irq, ksp->ndev); | |
605 | if (ksp->link_irq != -1) | |
606 | free_irq(ksp->link_irq, ksp->ndev); | |
607 | ||
608 | /* Throw away any pending TX packets */ | |
609 | for (buff_n = 0; buff_n < MAX_TX_DESC; ++buff_n) { | |
610 | if (ksp->tx_buffers[buff_n].skb) { | |
611 | /* Remove this SKB from the TX ring */ | |
612 | ksp->tx_ring[buff_n].owner = 0; | |
613 | ksp->tx_ring[buff_n].status = 0; | |
614 | ksp->tx_ring[buff_n].data_ptr = 0; | |
615 | ||
616 | /* Unmap and bin this SKB */ | |
617 | dma_unmap_single(ksp->dev, | |
618 | ksp->tx_buffers[buff_n].dma_ptr, | |
619 | ksp->tx_buffers[buff_n].length, | |
620 | DMA_TO_DEVICE); | |
621 | dev_kfree_skb_irq(ksp->tx_buffers[buff_n].skb); | |
622 | ksp->tx_buffers[buff_n].skb = NULL; | |
623 | } | |
624 | } | |
625 | ||
626 | /* Purge the RX buffers */ | |
627 | for (buff_n = 0; buff_n < MAX_RX_DESC; ++buff_n) { | |
628 | if (ksp->rx_buffers[buff_n].skb) { | |
629 | /* Remove the SKB from the RX ring */ | |
630 | ksp->rx_ring[buff_n].status = 0; | |
631 | ksp->rx_ring[buff_n].data_ptr = 0; | |
632 | ||
633 | /* Unmap and bin the SKB */ | |
634 | dma_unmap_single(ksp->dev, | |
635 | ksp->rx_buffers[buff_n].dma_ptr, | |
636 | ksp->rx_buffers[buff_n].length, | |
637 | DMA_FROM_DEVICE); | |
638 | dev_kfree_skb_irq(ksp->rx_buffers[buff_n].skb); | |
639 | ksp->rx_buffers[buff_n].skb = NULL; | |
640 | } | |
641 | } | |
642 | } | |
643 | ||
644 | ||
645 | /** | |
646 | * ks8695_setup_irq - IRQ setup helper function | |
647 | * @irq: The IRQ number to claim | |
648 | * @irq_name: The name to give the IRQ claimant | |
649 | * @handler: The function to call to handle the IRQ | |
650 | * @ndev: The net_device to pass in as the dev_id argument to the handler | |
651 | * | |
652 | * Return 0 on success. | |
653 | */ | |
654 | static int | |
655 | ks8695_setup_irq(int irq, const char *irq_name, | |
656 | irq_handler_t handler, struct net_device *ndev) | |
657 | { | |
658 | int ret; | |
659 | ||
660 | ret = request_irq(irq, handler, IRQF_SHARED, irq_name, ndev); | |
661 | ||
662 | if (ret) { | |
663 | dev_err(&ndev->dev, "failure to request IRQ %d\n", irq); | |
664 | return ret; | |
665 | } | |
666 | ||
667 | return 0; | |
668 | } | |
669 | ||
670 | /** | |
671 | * ks8695_init_net - Initialise a KS8695 ethernet interface | |
672 | * @ksp: The interface to initialise | |
673 | * | |
674 | * This routine fills the RX ring, initialises the DMA engines, | |
675 | * allocates the IRQs and then starts the packet TX and RX | |
676 | * engines. | |
677 | */ | |
678 | static int | |
679 | ks8695_init_net(struct ks8695_priv *ksp) | |
680 | { | |
681 | int ret; | |
682 | u32 ctrl; | |
683 | ||
684 | ks8695_refill_rxbuffers(ksp); | |
685 | ||
686 | /* Initialise the DMA engines */ | |
687 | ks8695_writereg(ksp, KS8695_RDLB, (u32) ksp->rx_ring_dma); | |
688 | ks8695_writereg(ksp, KS8695_TDLB, (u32) ksp->tx_ring_dma); | |
689 | ||
690 | /* Request the IRQs */ | |
691 | ret = ks8695_setup_irq(ksp->rx_irq, ksp->rx_irq_name, | |
692 | ks8695_rx_irq, ksp->ndev); | |
693 | if (ret) | |
694 | return ret; | |
695 | ret = ks8695_setup_irq(ksp->tx_irq, ksp->tx_irq_name, | |
696 | ks8695_tx_irq, ksp->ndev); | |
697 | if (ret) | |
698 | return ret; | |
699 | if (ksp->link_irq != -1) { | |
700 | ret = ks8695_setup_irq(ksp->link_irq, ksp->link_irq_name, | |
701 | ks8695_link_irq, ksp->ndev); | |
702 | if (ret) | |
703 | return ret; | |
704 | } | |
705 | ||
706 | /* Set up the ring indices */ | |
707 | ksp->next_rx_desc_read = 0; | |
708 | ksp->tx_ring_next_slot = 0; | |
709 | ksp->tx_ring_used = 0; | |
710 | ||
711 | /* Bring up transmission */ | |
712 | ctrl = ks8695_readreg(ksp, KS8695_DTXC); | |
713 | /* Enable packet transmission */ | |
714 | ks8695_writereg(ksp, KS8695_DTXC, ctrl | DTXC_TE); | |
715 | ||
716 | /* Bring up the reception */ | |
717 | ctrl = ks8695_readreg(ksp, KS8695_DRXC); | |
718 | /* Enable packet reception */ | |
719 | ks8695_writereg(ksp, KS8695_DRXC, ctrl | DRXC_RE); | |
720 | /* And start the DMA engine */ | |
721 | ks8695_writereg(ksp, KS8695_DRSC, 0); | |
722 | ||
723 | /* All done */ | |
724 | return 0; | |
725 | } | |
726 | ||
727 | /** | |
728 | * ks8695_release_device - HW resource release for KS8695 e-net | |
729 | * @ksp: The device to be freed | |
730 | * | |
731 | * This unallocates io memory regions, dma-coherent regions etc | |
732 | * which were allocated in ks8695_probe. | |
733 | */ | |
734 | static void | |
735 | ks8695_release_device(struct ks8695_priv *ksp) | |
736 | { | |
737 | /* Unmap the registers */ | |
738 | iounmap(ksp->io_regs); | |
739 | if (ksp->phyiface_regs) | |
740 | iounmap(ksp->phyiface_regs); | |
741 | ||
742 | /* And release the request */ | |
743 | release_resource(ksp->regs_req); | |
744 | kfree(ksp->regs_req); | |
745 | if (ksp->phyiface_req) { | |
746 | release_resource(ksp->phyiface_req); | |
747 | kfree(ksp->phyiface_req); | |
748 | } | |
749 | ||
750 | /* Free the ring buffers */ | |
751 | dma_free_coherent(ksp->dev, RING_DMA_SIZE, | |
752 | ksp->ring_base, ksp->ring_base_dma); | |
753 | } | |
754 | ||
755 | /* Ethtool support */ | |
756 | ||
757 | /** | |
758 | * ks8695_get_msglevel - Get the messages enabled for emission | |
759 | * @ndev: The network device to read from | |
760 | */ | |
761 | static u32 | |
762 | ks8695_get_msglevel(struct net_device *ndev) | |
763 | { | |
764 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
765 | ||
766 | return ksp->msg_enable; | |
767 | } | |
768 | ||
769 | /** | |
770 | * ks8695_set_msglevel - Set the messages enabled for emission | |
771 | * @ndev: The network device to configure | |
772 | * @value: The messages to set for emission | |
773 | */ | |
774 | static void | |
775 | ks8695_set_msglevel(struct net_device *ndev, u32 value) | |
776 | { | |
777 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
778 | ||
779 | ksp->msg_enable = value; | |
780 | } | |
781 | ||
782 | /** | |
783 | * ks8695_get_settings - Get device-specific settings. | |
784 | * @ndev: The network device to read settings from | |
785 | * @cmd: The ethtool structure to read into | |
786 | */ | |
787 | static int | |
788 | ks8695_get_settings(struct net_device *ndev, struct ethtool_cmd *cmd) | |
789 | { | |
790 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
791 | u32 ctrl; | |
792 | ||
793 | /* All ports on the KS8695 support these... */ | |
794 | cmd->supported = (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | | |
795 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | | |
796 | SUPPORTED_TP | SUPPORTED_MII); | |
797 | cmd->transceiver = XCVR_INTERNAL; | |
798 | ||
799 | /* Port specific extras */ | |
800 | switch (ksp->dtype) { | |
801 | case KS8695_DTYPE_HPNA: | |
802 | cmd->phy_address = 0; | |
803 | /* not supported for HPNA */ | |
804 | cmd->autoneg = AUTONEG_DISABLE; | |
805 | ||
806 | /* BUG: Erm, dtype hpna implies no phy regs */ | |
807 | /* | |
808 | ctrl = readl(KS8695_MISC_VA + KS8695_HMC); | |
809 | cmd->speed = (ctrl & HMC_HSS) ? SPEED_100 : SPEED_10; | |
810 | cmd->duplex = (ctrl & HMC_HDS) ? DUPLEX_FULL : DUPLEX_HALF; | |
811 | */ | |
812 | return -EOPNOTSUPP; | |
813 | case KS8695_DTYPE_WAN: | |
814 | cmd->advertising = ADVERTISED_TP | ADVERTISED_MII; | |
815 | cmd->port = PORT_MII; | |
816 | cmd->supported |= (SUPPORTED_Autoneg | SUPPORTED_Pause); | |
817 | cmd->phy_address = 0; | |
818 | ||
819 | ctrl = readl(ksp->phyiface_regs + KS8695_WMC); | |
820 | if ((ctrl & WMC_WAND) == 0) { | |
821 | /* auto-negotiation is enabled */ | |
822 | cmd->advertising |= ADVERTISED_Autoneg; | |
823 | if (ctrl & WMC_WANA100F) | |
824 | cmd->advertising |= ADVERTISED_100baseT_Full; | |
825 | if (ctrl & WMC_WANA100H) | |
826 | cmd->advertising |= ADVERTISED_100baseT_Half; | |
827 | if (ctrl & WMC_WANA10F) | |
828 | cmd->advertising |= ADVERTISED_10baseT_Full; | |
829 | if (ctrl & WMC_WANA10H) | |
830 | cmd->advertising |= ADVERTISED_10baseT_Half; | |
831 | if (ctrl & WMC_WANAP) | |
832 | cmd->advertising |= ADVERTISED_Pause; | |
833 | cmd->autoneg = AUTONEG_ENABLE; | |
834 | ||
835 | cmd->speed = (ctrl & WMC_WSS) ? SPEED_100 : SPEED_10; | |
836 | cmd->duplex = (ctrl & WMC_WDS) ? | |
837 | DUPLEX_FULL : DUPLEX_HALF; | |
838 | } else { | |
839 | /* auto-negotiation is disabled */ | |
840 | cmd->autoneg = AUTONEG_DISABLE; | |
841 | ||
842 | cmd->speed = (ctrl & WMC_WANF100) ? | |
843 | SPEED_100 : SPEED_10; | |
844 | cmd->duplex = (ctrl & WMC_WANFF) ? | |
845 | DUPLEX_FULL : DUPLEX_HALF; | |
846 | } | |
847 | break; | |
848 | case KS8695_DTYPE_LAN: | |
849 | return -EOPNOTSUPP; | |
850 | } | |
851 | ||
852 | return 0; | |
853 | } | |
854 | ||
855 | /** | |
856 | * ks8695_set_settings - Set device-specific settings. | |
857 | * @ndev: The network device to configure | |
858 | * @cmd: The settings to configure | |
859 | */ | |
860 | static int | |
861 | ks8695_set_settings(struct net_device *ndev, struct ethtool_cmd *cmd) | |
862 | { | |
863 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
864 | u32 ctrl; | |
865 | ||
866 | if ((cmd->speed != SPEED_10) && (cmd->speed != SPEED_100)) | |
867 | return -EINVAL; | |
868 | if ((cmd->duplex != DUPLEX_HALF) && (cmd->duplex != DUPLEX_FULL)) | |
869 | return -EINVAL; | |
870 | if (cmd->port != PORT_MII) | |
871 | return -EINVAL; | |
872 | if (cmd->transceiver != XCVR_INTERNAL) | |
873 | return -EINVAL; | |
874 | if ((cmd->autoneg != AUTONEG_DISABLE) && | |
875 | (cmd->autoneg != AUTONEG_ENABLE)) | |
876 | return -EINVAL; | |
877 | ||
878 | if (cmd->autoneg == AUTONEG_ENABLE) { | |
879 | if ((cmd->advertising & (ADVERTISED_10baseT_Half | | |
880 | ADVERTISED_10baseT_Full | | |
881 | ADVERTISED_100baseT_Half | | |
882 | ADVERTISED_100baseT_Full)) == 0) | |
883 | return -EINVAL; | |
884 | ||
885 | switch (ksp->dtype) { | |
886 | case KS8695_DTYPE_HPNA: | |
887 | /* HPNA does not support auto-negotiation. */ | |
888 | return -EINVAL; | |
889 | case KS8695_DTYPE_WAN: | |
890 | ctrl = readl(ksp->phyiface_regs + KS8695_WMC); | |
891 | ||
892 | ctrl &= ~(WMC_WAND | WMC_WANA100F | WMC_WANA100H | | |
893 | WMC_WANA10F | WMC_WANA10H); | |
894 | if (cmd->advertising & ADVERTISED_100baseT_Full) | |
895 | ctrl |= WMC_WANA100F; | |
896 | if (cmd->advertising & ADVERTISED_100baseT_Half) | |
897 | ctrl |= WMC_WANA100H; | |
898 | if (cmd->advertising & ADVERTISED_10baseT_Full) | |
899 | ctrl |= WMC_WANA10F; | |
900 | if (cmd->advertising & ADVERTISED_10baseT_Half) | |
901 | ctrl |= WMC_WANA10H; | |
902 | ||
903 | /* force a re-negotiation */ | |
904 | ctrl |= WMC_WANR; | |
905 | writel(ctrl, ksp->phyiface_regs + KS8695_WMC); | |
906 | break; | |
907 | case KS8695_DTYPE_LAN: | |
908 | return -EOPNOTSUPP; | |
909 | } | |
910 | ||
911 | } else { | |
912 | switch (ksp->dtype) { | |
913 | case KS8695_DTYPE_HPNA: | |
914 | /* BUG: dtype_hpna implies no phy registers */ | |
915 | /* | |
916 | ctrl = __raw_readl(KS8695_MISC_VA + KS8695_HMC); | |
917 | ||
918 | ctrl &= ~(HMC_HSS | HMC_HDS); | |
919 | if (cmd->speed == SPEED_100) | |
920 | ctrl |= HMC_HSS; | |
921 | if (cmd->duplex == DUPLEX_FULL) | |
922 | ctrl |= HMC_HDS; | |
923 | ||
924 | __raw_writel(ctrl, KS8695_MISC_VA + KS8695_HMC); | |
925 | */ | |
926 | return -EOPNOTSUPP; | |
927 | case KS8695_DTYPE_WAN: | |
928 | ctrl = readl(ksp->phyiface_regs + KS8695_WMC); | |
929 | ||
930 | /* disable auto-negotiation */ | |
931 | ctrl |= WMC_WAND; | |
932 | ctrl &= ~(WMC_WANF100 | WMC_WANFF); | |
933 | ||
934 | if (cmd->speed == SPEED_100) | |
935 | ctrl |= WMC_WANF100; | |
936 | if (cmd->duplex == DUPLEX_FULL) | |
937 | ctrl |= WMC_WANFF; | |
938 | ||
939 | writel(ctrl, ksp->phyiface_regs + KS8695_WMC); | |
940 | break; | |
941 | case KS8695_DTYPE_LAN: | |
942 | return -EOPNOTSUPP; | |
943 | } | |
944 | } | |
945 | ||
946 | return 0; | |
947 | } | |
948 | ||
949 | /** | |
950 | * ks8695_nwayreset - Restart the autonegotiation on the port. | |
951 | * @ndev: The network device to restart autoneotiation on | |
952 | */ | |
953 | static int | |
954 | ks8695_nwayreset(struct net_device *ndev) | |
955 | { | |
956 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
957 | u32 ctrl; | |
958 | ||
959 | switch (ksp->dtype) { | |
960 | case KS8695_DTYPE_HPNA: | |
961 | /* No phy means no autonegotiation on hpna */ | |
962 | return -EINVAL; | |
963 | case KS8695_DTYPE_WAN: | |
964 | ctrl = readl(ksp->phyiface_regs + KS8695_WMC); | |
965 | ||
966 | if ((ctrl & WMC_WAND) == 0) | |
967 | writel(ctrl | WMC_WANR, | |
968 | ksp->phyiface_regs + KS8695_WMC); | |
969 | else | |
970 | /* auto-negotiation not enabled */ | |
971 | return -EINVAL; | |
972 | break; | |
973 | case KS8695_DTYPE_LAN: | |
974 | return -EOPNOTSUPP; | |
975 | } | |
976 | ||
977 | return 0; | |
978 | } | |
979 | ||
980 | /** | |
981 | * ks8695_get_link - Retrieve link status of network interface | |
982 | * @ndev: The network interface to retrive the link status of. | |
983 | */ | |
984 | static u32 | |
985 | ks8695_get_link(struct net_device *ndev) | |
986 | { | |
987 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
988 | u32 ctrl; | |
989 | ||
990 | switch (ksp->dtype) { | |
991 | case KS8695_DTYPE_HPNA: | |
992 | /* HPNA always has link */ | |
993 | return 1; | |
994 | case KS8695_DTYPE_WAN: | |
995 | /* WAN we can read the PHY for */ | |
996 | ctrl = readl(ksp->phyiface_regs + KS8695_WMC); | |
997 | return ctrl & WMC_WLS; | |
998 | case KS8695_DTYPE_LAN: | |
999 | return -EOPNOTSUPP; | |
1000 | } | |
1001 | return 0; | |
1002 | } | |
1003 | ||
1004 | /** | |
1005 | * ks8695_get_pause - Retrieve network pause/flow-control advertising | |
1006 | * @ndev: The device to retrieve settings from | |
1007 | * @param: The structure to fill out with the information | |
1008 | */ | |
1009 | static void | |
1010 | ks8695_get_pause(struct net_device *ndev, struct ethtool_pauseparam *param) | |
1011 | { | |
1012 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
1013 | u32 ctrl; | |
1014 | ||
1015 | switch (ksp->dtype) { | |
1016 | case KS8695_DTYPE_HPNA: | |
1017 | /* No phy link on hpna to configure */ | |
1018 | return; | |
1019 | case KS8695_DTYPE_WAN: | |
1020 | ctrl = readl(ksp->phyiface_regs + KS8695_WMC); | |
1021 | ||
1022 | /* advertise Pause */ | |
1023 | param->autoneg = (ctrl & WMC_WANAP); | |
1024 | ||
1025 | /* current Rx Flow-control */ | |
1026 | ctrl = ks8695_readreg(ksp, KS8695_DRXC); | |
1027 | param->rx_pause = (ctrl & DRXC_RFCE); | |
1028 | ||
1029 | /* current Tx Flow-control */ | |
1030 | ctrl = ks8695_readreg(ksp, KS8695_DTXC); | |
1031 | param->tx_pause = (ctrl & DTXC_TFCE); | |
1032 | break; | |
1033 | case KS8695_DTYPE_LAN: | |
1034 | /* The LAN's "phy" is a direct-attached switch */ | |
1035 | return; | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | /** | |
1040 | * ks8695_set_pause - Configure pause/flow-control | |
1041 | * @ndev: The device to configure | |
1042 | * @param: The pause parameters to set | |
1043 | * | |
1044 | * TODO: Implement this | |
1045 | */ | |
1046 | static int | |
1047 | ks8695_set_pause(struct net_device *ndev, struct ethtool_pauseparam *param) | |
1048 | { | |
1049 | return -EOPNOTSUPP; | |
1050 | } | |
1051 | ||
1052 | /** | |
1053 | * ks8695_get_drvinfo - Retrieve driver information | |
1054 | * @ndev: The network device to retrieve info about | |
1055 | * @info: The info structure to fill out. | |
1056 | */ | |
1057 | static void | |
1058 | ks8695_get_drvinfo(struct net_device *ndev, struct ethtool_drvinfo *info) | |
1059 | { | |
1060 | strlcpy(info->driver, MODULENAME, sizeof(info->driver)); | |
1061 | strlcpy(info->version, MODULEVERSION, sizeof(info->version)); | |
1062 | strlcpy(info->bus_info, ndev->dev.parent->bus_id, | |
1063 | sizeof(info->bus_info)); | |
1064 | } | |
1065 | ||
1066 | static struct ethtool_ops ks8695_ethtool_ops = { | |
1067 | .get_msglevel = ks8695_get_msglevel, | |
1068 | .set_msglevel = ks8695_set_msglevel, | |
1069 | .get_settings = ks8695_get_settings, | |
1070 | .set_settings = ks8695_set_settings, | |
1071 | .nway_reset = ks8695_nwayreset, | |
1072 | .get_link = ks8695_get_link, | |
1073 | .get_pauseparam = ks8695_get_pause, | |
1074 | .set_pauseparam = ks8695_set_pause, | |
1075 | .get_drvinfo = ks8695_get_drvinfo, | |
1076 | }; | |
1077 | ||
1078 | /* Network device interface functions */ | |
1079 | ||
1080 | /** | |
1081 | * ks8695_set_mac - Update MAC in net dev and HW | |
1082 | * @ndev: The network device to update | |
1083 | * @addr: The new MAC address to set | |
1084 | */ | |
1085 | static int | |
1086 | ks8695_set_mac(struct net_device *ndev, void *addr) | |
1087 | { | |
1088 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
1089 | struct sockaddr *address = addr; | |
1090 | ||
1091 | if (!is_valid_ether_addr(address->sa_data)) | |
1092 | return -EADDRNOTAVAIL; | |
1093 | ||
1094 | memcpy(ndev->dev_addr, address->sa_data, ndev->addr_len); | |
1095 | ||
1096 | ks8695_update_mac(ksp); | |
1097 | ||
1098 | dev_dbg(ksp->dev, "%s: Updated MAC address to %pM\n", | |
1099 | ndev->name, ndev->dev_addr); | |
1100 | ||
1101 | return 0; | |
1102 | } | |
1103 | ||
1104 | /** | |
1105 | * ks8695_set_multicast - Set up the multicast behaviour of the interface | |
1106 | * @ndev: The net_device to configure | |
1107 | * | |
1108 | * This routine, called by the net layer, configures promiscuity | |
1109 | * and multicast reception behaviour for the interface. | |
1110 | */ | |
1111 | static void | |
1112 | ks8695_set_multicast(struct net_device *ndev) | |
1113 | { | |
1114 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
1115 | u32 ctrl; | |
1116 | ||
1117 | ctrl = ks8695_readreg(ksp, KS8695_DRXC); | |
1118 | ||
1119 | if (ndev->flags & IFF_PROMISC) { | |
1120 | /* enable promiscuous mode */ | |
1121 | ctrl |= DRXC_RA; | |
1122 | } else if (ndev->flags & ~IFF_PROMISC) { | |
1123 | /* disable promiscuous mode */ | |
1124 | ctrl &= ~DRXC_RA; | |
1125 | } | |
1126 | ||
1127 | if (ndev->flags & IFF_ALLMULTI) { | |
1128 | /* enable all multicast mode */ | |
1129 | ctrl |= DRXC_RM; | |
1130 | } else if (ndev->mc_count > KS8695_NR_ADDRESSES) { | |
1131 | /* more specific multicast addresses than can be | |
1132 | * handled in hardware | |
1133 | */ | |
1134 | ctrl |= DRXC_RM; | |
1135 | } else { | |
1136 | /* enable specific multicasts */ | |
1137 | ctrl &= ~DRXC_RM; | |
1138 | ks8695_init_partial_multicast(ksp, ndev->mc_list, | |
1139 | ndev->mc_count); | |
1140 | } | |
1141 | ||
1142 | ks8695_writereg(ksp, KS8695_DRXC, ctrl); | |
1143 | } | |
1144 | ||
1145 | /** | |
1146 | * ks8695_timeout - Handle a network tx/rx timeout. | |
1147 | * @ndev: The net_device which timed out. | |
1148 | * | |
1149 | * A network transaction timed out, reset the device. | |
1150 | */ | |
1151 | static void | |
1152 | ks8695_timeout(struct net_device *ndev) | |
1153 | { | |
1154 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
1155 | ||
1156 | netif_stop_queue(ndev); | |
1157 | ks8695_shutdown(ksp); | |
1158 | ||
1159 | ks8695_reset(ksp); | |
1160 | ||
1161 | ks8695_update_mac(ksp); | |
1162 | ||
1163 | /* We ignore the return from this since it managed to init | |
1164 | * before it probably will be okay to init again. | |
1165 | */ | |
1166 | ks8695_init_net(ksp); | |
1167 | ||
1168 | /* Reconfigure promiscuity etc */ | |
1169 | ks8695_set_multicast(ndev); | |
1170 | ||
1171 | /* And start the TX queue once more */ | |
1172 | netif_start_queue(ndev); | |
1173 | } | |
1174 | ||
1175 | /** | |
1176 | * ks8695_start_xmit - Start a packet transmission | |
1177 | * @skb: The packet to transmit | |
1178 | * @ndev: The network device to send the packet on | |
1179 | * | |
1180 | * This routine, called by the net layer, takes ownership of the | |
1181 | * sk_buff and adds it to the TX ring. It then kicks the TX DMA | |
1182 | * engine to ensure transmission begins. | |
1183 | */ | |
1184 | static int | |
1185 | ks8695_start_xmit(struct sk_buff *skb, struct net_device *ndev) | |
1186 | { | |
1187 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
1188 | int buff_n; | |
1189 | dma_addr_t dmap; | |
1190 | ||
1191 | spin_lock_irq(&ksp->txq_lock); | |
1192 | ||
1193 | if (ksp->tx_ring_used == MAX_TX_DESC) { | |
1194 | /* Somehow we got entered when we have no room */ | |
1195 | spin_unlock_irq(&ksp->txq_lock); | |
1196 | return NETDEV_TX_BUSY; | |
1197 | } | |
1198 | ||
1199 | buff_n = ksp->tx_ring_next_slot; | |
1200 | ||
1201 | BUG_ON(ksp->tx_buffers[buff_n].skb); | |
1202 | ||
1203 | dmap = dma_map_single(ksp->dev, skb->data, skb->len, DMA_TO_DEVICE); | |
1204 | if (unlikely(dma_mapping_error(ksp->dev, dmap))) { | |
1205 | /* Failed to DMA map this SKB, give it back for now */ | |
1206 | spin_unlock_irq(&ksp->txq_lock); | |
1207 | dev_dbg(ksp->dev, "%s: Could not map DMA memory for "\ | |
1208 | "transmission, trying later\n", ndev->name); | |
1209 | return NETDEV_TX_BUSY; | |
1210 | } | |
1211 | ||
1212 | ksp->tx_buffers[buff_n].dma_ptr = dmap; | |
1213 | /* Mapped okay, store the buffer pointer and length for later */ | |
1214 | ksp->tx_buffers[buff_n].skb = skb; | |
1215 | ksp->tx_buffers[buff_n].length = skb->len; | |
1216 | ||
1217 | /* Fill out the TX descriptor */ | |
1218 | ksp->tx_ring[buff_n].data_ptr = | |
1219 | cpu_to_le32(ksp->tx_buffers[buff_n].dma_ptr); | |
1220 | ksp->tx_ring[buff_n].status = | |
1221 | cpu_to_le32(TDES_IC | TDES_FS | TDES_LS | | |
1222 | (skb->len & TDES_TBS)); | |
1223 | ||
1224 | wmb(); | |
1225 | ||
1226 | /* Hand it over to the hardware */ | |
1227 | ksp->tx_ring[buff_n].owner = cpu_to_le32(TDES_OWN); | |
1228 | ||
1229 | if (++ksp->tx_ring_used == MAX_TX_DESC) | |
1230 | netif_stop_queue(ndev); | |
1231 | ||
1232 | ndev->trans_start = jiffies; | |
1233 | ||
1234 | /* Kick the TX DMA in case it decided to go IDLE */ | |
1235 | ks8695_writereg(ksp, KS8695_DTSC, 0); | |
1236 | ||
1237 | /* And update the next ring slot */ | |
1238 | ksp->tx_ring_next_slot = (buff_n + 1) & MAX_TX_DESC_MASK; | |
1239 | ||
1240 | spin_unlock_irq(&ksp->txq_lock); | |
1241 | return NETDEV_TX_OK; | |
1242 | } | |
1243 | ||
1244 | /** | |
1245 | * ks8695_stop - Stop (shutdown) a KS8695 ethernet interface | |
1246 | * @ndev: The net_device to stop | |
1247 | * | |
1248 | * This disables the TX queue and cleans up a KS8695 ethernet | |
1249 | * device. | |
1250 | */ | |
1251 | static int | |
1252 | ks8695_stop(struct net_device *ndev) | |
1253 | { | |
1254 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
1255 | ||
1256 | netif_stop_queue(ndev); | |
1257 | netif_carrier_off(ndev); | |
1258 | ||
1259 | ks8695_shutdown(ksp); | |
1260 | ||
1261 | return 0; | |
1262 | } | |
1263 | ||
1264 | /** | |
1265 | * ks8695_open - Open (bring up) a KS8695 ethernet interface | |
1266 | * @ndev: The net_device to open | |
1267 | * | |
1268 | * This resets, configures the MAC, initialises the RX ring and | |
1269 | * DMA engines and starts the TX queue for a KS8695 ethernet | |
1270 | * device. | |
1271 | */ | |
1272 | static int | |
1273 | ks8695_open(struct net_device *ndev) | |
1274 | { | |
1275 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
1276 | int ret; | |
1277 | ||
1278 | if (!is_valid_ether_addr(ndev->dev_addr)) | |
1279 | return -EADDRNOTAVAIL; | |
1280 | ||
1281 | ks8695_reset(ksp); | |
1282 | ||
1283 | ks8695_update_mac(ksp); | |
1284 | ||
1285 | ret = ks8695_init_net(ksp); | |
1286 | if (ret) { | |
1287 | ks8695_shutdown(ksp); | |
1288 | return ret; | |
1289 | } | |
1290 | ||
1291 | netif_start_queue(ndev); | |
1292 | ||
1293 | return 0; | |
1294 | } | |
1295 | ||
1296 | /* Platform device driver */ | |
1297 | ||
1298 | /** | |
1299 | * ks8695_init_switch - Init LAN switch to known good defaults. | |
1300 | * @ksp: The device to initialise | |
1301 | * | |
1302 | * This initialises the LAN switch in the KS8695 to a known-good | |
1303 | * set of defaults. | |
1304 | */ | |
1305 | static void __devinit | |
1306 | ks8695_init_switch(struct ks8695_priv *ksp) | |
1307 | { | |
1308 | u32 ctrl; | |
1309 | ||
1310 | /* Default value for SEC0 according to datasheet */ | |
1311 | ctrl = 0x40819e00; | |
1312 | ||
1313 | /* LED0 = Speed LED1 = Link/Activity */ | |
1314 | ctrl &= ~(SEC0_LLED1S | SEC0_LLED0S); | |
1315 | ctrl |= (LLED0S_LINK | LLED1S_LINK_ACTIVITY); | |
1316 | ||
1317 | /* Enable Switch */ | |
1318 | ctrl |= SEC0_ENABLE; | |
1319 | ||
1320 | writel(ctrl, ksp->phyiface_regs + KS8695_SEC0); | |
1321 | ||
1322 | /* Defaults for SEC1 */ | |
1323 | writel(0x9400100, ksp->phyiface_regs + KS8695_SEC1); | |
1324 | } | |
1325 | ||
1326 | /** | |
1327 | * ks8695_init_wan_phy - Initialise the WAN PHY to sensible defaults | |
1328 | * @ksp: The device to initialise | |
1329 | * | |
1330 | * This initialises a KS8695's WAN phy to sensible values for | |
1331 | * autonegotiation etc. | |
1332 | */ | |
1333 | static void __devinit | |
1334 | ks8695_init_wan_phy(struct ks8695_priv *ksp) | |
1335 | { | |
1336 | u32 ctrl; | |
1337 | ||
1338 | /* Support auto-negotiation */ | |
1339 | ctrl = (WMC_WANAP | WMC_WANA100F | WMC_WANA100H | | |
1340 | WMC_WANA10F | WMC_WANA10H); | |
1341 | ||
1342 | /* LED0 = Activity , LED1 = Link */ | |
1343 | ctrl |= (WLED0S_ACTIVITY | WLED1S_LINK); | |
1344 | ||
1345 | /* Restart Auto-negotiation */ | |
1346 | ctrl |= WMC_WANR; | |
1347 | ||
1348 | writel(ctrl, ksp->phyiface_regs + KS8695_WMC); | |
1349 | ||
1350 | writel(0, ksp->phyiface_regs + KS8695_WPPM); | |
1351 | writel(0, ksp->phyiface_regs + KS8695_PPS); | |
1352 | } | |
1353 | ||
1354 | static const struct net_device_ops ks8695_netdev_ops = { | |
1355 | .ndo_open = ks8695_open, | |
1356 | .ndo_stop = ks8695_stop, | |
1357 | .ndo_start_xmit = ks8695_start_xmit, | |
1358 | .ndo_tx_timeout = ks8695_timeout, | |
1359 | .ndo_set_mac_address = ks8695_set_mac, | |
52255bbe | 1360 | .ndo_validate_addr = eth_validate_addr, |
7a3c66e2 DS |
1361 | .ndo_set_multicast_list = ks8695_set_multicast, |
1362 | }; | |
1363 | ||
1364 | /** | |
1365 | * ks8695_probe - Probe and initialise a KS8695 ethernet interface | |
1366 | * @pdev: The platform device to probe | |
1367 | * | |
1368 | * Initialise a KS8695 ethernet device from platform data. | |
1369 | * | |
1370 | * This driver requires at least one IORESOURCE_MEM for the | |
1371 | * registers and two IORESOURCE_IRQ for the RX and TX IRQs | |
1372 | * respectively. It can optionally take an additional | |
1373 | * IORESOURCE_MEM for the switch or phy in the case of the lan or | |
1374 | * wan ports, and an IORESOURCE_IRQ for the link IRQ for the wan | |
1375 | * port. | |
1376 | */ | |
1377 | static int __devinit | |
1378 | ks8695_probe(struct platform_device *pdev) | |
1379 | { | |
1380 | struct ks8695_priv *ksp; | |
1381 | struct net_device *ndev; | |
1382 | struct resource *regs_res, *phyiface_res; | |
1383 | struct resource *rxirq_res, *txirq_res, *linkirq_res; | |
1384 | int ret = 0; | |
1385 | int buff_n; | |
1386 | u32 machigh, maclow; | |
1387 | ||
1388 | /* Initialise a net_device */ | |
1389 | ndev = alloc_etherdev(sizeof(struct ks8695_priv)); | |
1390 | if (!ndev) { | |
1391 | dev_err(&pdev->dev, "could not allocate device.\n"); | |
1392 | return -ENOMEM; | |
1393 | } | |
1394 | ||
1395 | SET_NETDEV_DEV(ndev, &pdev->dev); | |
1396 | ||
1397 | dev_dbg(&pdev->dev, "ks8695_probe() called\n"); | |
1398 | ||
1399 | /* Configure our private structure a little */ | |
1400 | ksp = netdev_priv(ndev); | |
1401 | memset(ksp, 0, sizeof(struct ks8695_priv)); | |
1402 | ||
1403 | ksp->dev = &pdev->dev; | |
1404 | ksp->ndev = ndev; | |
1405 | ksp->msg_enable = NETIF_MSG_LINK; | |
1406 | ||
1407 | /* Retrieve resources */ | |
1408 | regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1409 | phyiface_res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
1410 | ||
1411 | rxirq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); | |
1412 | txirq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 1); | |
1413 | linkirq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 2); | |
1414 | ||
1415 | if (!(regs_res && rxirq_res && txirq_res)) { | |
1416 | dev_err(ksp->dev, "insufficient resources\n"); | |
1417 | ret = -ENOENT; | |
1418 | goto failure; | |
1419 | } | |
1420 | ||
1421 | ksp->regs_req = request_mem_region(regs_res->start, | |
1422 | resource_size(regs_res), | |
1423 | pdev->name); | |
1424 | ||
1425 | if (!ksp->regs_req) { | |
1426 | dev_err(ksp->dev, "cannot claim register space\n"); | |
1427 | ret = -EIO; | |
1428 | goto failure; | |
1429 | } | |
1430 | ||
1431 | ksp->io_regs = ioremap(regs_res->start, resource_size(regs_res)); | |
1432 | ||
1433 | if (!ksp->io_regs) { | |
1434 | dev_err(ksp->dev, "failed to ioremap registers\n"); | |
1435 | ret = -EINVAL; | |
1436 | goto failure; | |
1437 | } | |
1438 | ||
1439 | if (phyiface_res) { | |
1440 | ksp->phyiface_req = | |
1441 | request_mem_region(phyiface_res->start, | |
1442 | resource_size(phyiface_res), | |
1443 | phyiface_res->name); | |
1444 | ||
1445 | if (!ksp->phyiface_req) { | |
1446 | dev_err(ksp->dev, | |
1447 | "cannot claim switch register space\n"); | |
1448 | ret = -EIO; | |
1449 | goto failure; | |
1450 | } | |
1451 | ||
1452 | ksp->phyiface_regs = ioremap(phyiface_res->start, | |
1453 | resource_size(phyiface_res)); | |
1454 | ||
1455 | if (!ksp->phyiface_regs) { | |
1456 | dev_err(ksp->dev, | |
1457 | "failed to ioremap switch registers\n"); | |
1458 | ret = -EINVAL; | |
1459 | goto failure; | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | ksp->rx_irq = rxirq_res->start; | |
1464 | ksp->rx_irq_name = rxirq_res->name ? rxirq_res->name : "Ethernet RX"; | |
1465 | ksp->tx_irq = txirq_res->start; | |
1466 | ksp->tx_irq_name = txirq_res->name ? txirq_res->name : "Ethernet TX"; | |
1467 | ksp->link_irq = (linkirq_res ? linkirq_res->start : -1); | |
1468 | ksp->link_irq_name = (linkirq_res && linkirq_res->name) ? | |
1469 | linkirq_res->name : "Ethernet Link"; | |
1470 | ||
1471 | /* driver system setup */ | |
1472 | ndev->netdev_ops = &ks8695_netdev_ops; | |
1473 | SET_ETHTOOL_OPS(ndev, &ks8695_ethtool_ops); | |
1474 | ndev->watchdog_timeo = msecs_to_jiffies(watchdog); | |
1475 | ||
1476 | /* Retrieve the default MAC addr from the chip. */ | |
1477 | /* The bootloader should have left it in there for us. */ | |
1478 | ||
1479 | machigh = ks8695_readreg(ksp, KS8695_MAH); | |
1480 | maclow = ks8695_readreg(ksp, KS8695_MAL); | |
1481 | ||
1482 | ndev->dev_addr[0] = (machigh >> 8) & 0xFF; | |
1483 | ndev->dev_addr[1] = machigh & 0xFF; | |
1484 | ndev->dev_addr[2] = (maclow >> 24) & 0xFF; | |
1485 | ndev->dev_addr[3] = (maclow >> 16) & 0xFF; | |
1486 | ndev->dev_addr[4] = (maclow >> 8) & 0xFF; | |
1487 | ndev->dev_addr[5] = maclow & 0xFF; | |
1488 | ||
1489 | if (!is_valid_ether_addr(ndev->dev_addr)) | |
1490 | dev_warn(ksp->dev, "%s: Invalid ethernet MAC address. Please " | |
1491 | "set using ifconfig\n", ndev->name); | |
1492 | ||
1493 | /* In order to be efficient memory-wise, we allocate both | |
1494 | * rings in one go. | |
1495 | */ | |
1496 | ksp->ring_base = dma_alloc_coherent(&pdev->dev, RING_DMA_SIZE, | |
1497 | &ksp->ring_base_dma, GFP_KERNEL); | |
1498 | if (!ksp->ring_base) { | |
1499 | ret = -ENOMEM; | |
1500 | goto failure; | |
1501 | } | |
1502 | ||
1503 | /* Specify the TX DMA ring buffer */ | |
1504 | ksp->tx_ring = ksp->ring_base; | |
1505 | ksp->tx_ring_dma = ksp->ring_base_dma; | |
1506 | ||
1507 | /* And initialise the queue's lock */ | |
1508 | spin_lock_init(&ksp->txq_lock); | |
1509 | ||
1510 | /* Specify the RX DMA ring buffer */ | |
1511 | ksp->rx_ring = ksp->ring_base + TX_RING_DMA_SIZE; | |
1512 | ksp->rx_ring_dma = ksp->ring_base_dma + TX_RING_DMA_SIZE; | |
1513 | ||
1514 | /* Zero the descriptor rings */ | |
1515 | memset(ksp->tx_ring, 0, TX_RING_DMA_SIZE); | |
1516 | memset(ksp->rx_ring, 0, RX_RING_DMA_SIZE); | |
1517 | ||
1518 | /* Build the rings */ | |
1519 | for (buff_n = 0; buff_n < MAX_TX_DESC; ++buff_n) { | |
1520 | ksp->tx_ring[buff_n].next_desc = | |
1521 | cpu_to_le32(ksp->tx_ring_dma + | |
1522 | (sizeof(struct tx_ring_desc) * | |
1523 | ((buff_n + 1) & MAX_TX_DESC_MASK))); | |
1524 | } | |
1525 | ||
1526 | for (buff_n = 0; buff_n < MAX_RX_DESC; ++buff_n) { | |
1527 | ksp->rx_ring[buff_n].next_desc = | |
1528 | cpu_to_le32(ksp->rx_ring_dma + | |
1529 | (sizeof(struct rx_ring_desc) * | |
1530 | ((buff_n + 1) & MAX_RX_DESC_MASK))); | |
1531 | } | |
1532 | ||
1533 | /* Initialise the port (physically) */ | |
1534 | if (ksp->phyiface_regs && ksp->link_irq == -1) { | |
1535 | ks8695_init_switch(ksp); | |
1536 | ksp->dtype = KS8695_DTYPE_LAN; | |
1537 | } else if (ksp->phyiface_regs && ksp->link_irq != -1) { | |
1538 | ks8695_init_wan_phy(ksp); | |
1539 | ksp->dtype = KS8695_DTYPE_WAN; | |
1540 | } else { | |
1541 | /* No initialisation since HPNA does not have a PHY */ | |
1542 | ksp->dtype = KS8695_DTYPE_HPNA; | |
1543 | } | |
1544 | ||
1545 | /* And bring up the net_device with the net core */ | |
1546 | platform_set_drvdata(pdev, ndev); | |
1547 | ret = register_netdev(ndev); | |
1548 | ||
1549 | if (ret == 0) { | |
1550 | dev_info(ksp->dev, "ks8695 ethernet (%s) MAC: %pM\n", | |
1551 | ks8695_port_type(ksp), ndev->dev_addr); | |
1552 | } else { | |
1553 | /* Report the failure to register the net_device */ | |
1554 | dev_err(ksp->dev, "ks8695net: failed to register netdev.\n"); | |
1555 | goto failure; | |
1556 | } | |
1557 | ||
1558 | /* All is well */ | |
1559 | return 0; | |
1560 | ||
1561 | /* Error exit path */ | |
1562 | failure: | |
1563 | ks8695_release_device(ksp); | |
1564 | free_netdev(ndev); | |
1565 | ||
1566 | return ret; | |
1567 | } | |
1568 | ||
1569 | /** | |
1570 | * ks8695_drv_suspend - Suspend a KS8695 ethernet platform device. | |
1571 | * @pdev: The device to suspend | |
1572 | * @state: The suspend state | |
1573 | * | |
1574 | * This routine detaches and shuts down a KS8695 ethernet device. | |
1575 | */ | |
1576 | static int | |
1577 | ks8695_drv_suspend(struct platform_device *pdev, pm_message_t state) | |
1578 | { | |
1579 | struct net_device *ndev = platform_get_drvdata(pdev); | |
1580 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
1581 | ||
1582 | ksp->in_suspend = 1; | |
1583 | ||
1584 | if (netif_running(ndev)) { | |
1585 | netif_device_detach(ndev); | |
1586 | ks8695_shutdown(ksp); | |
1587 | } | |
1588 | ||
1589 | return 0; | |
1590 | } | |
1591 | ||
1592 | /** | |
1593 | * ks8695_drv_resume - Resume a KS8695 ethernet platform device. | |
1594 | * @pdev: The device to resume | |
1595 | * | |
1596 | * This routine re-initialises and re-attaches a KS8695 ethernet | |
1597 | * device. | |
1598 | */ | |
1599 | static int | |
1600 | ks8695_drv_resume(struct platform_device *pdev) | |
1601 | { | |
1602 | struct net_device *ndev = platform_get_drvdata(pdev); | |
1603 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
1604 | ||
1605 | if (netif_running(ndev)) { | |
1606 | ks8695_reset(ksp); | |
1607 | ks8695_init_net(ksp); | |
1608 | ks8695_set_multicast(ndev); | |
1609 | netif_device_attach(ndev); | |
1610 | } | |
1611 | ||
1612 | ksp->in_suspend = 0; | |
1613 | ||
1614 | return 0; | |
1615 | } | |
1616 | ||
1617 | /** | |
1618 | * ks8695_drv_remove - Remove a KS8695 net device on driver unload. | |
1619 | * @pdev: The platform device to remove | |
1620 | * | |
1621 | * This unregisters and releases a KS8695 ethernet device. | |
1622 | */ | |
1623 | static int __devexit | |
1624 | ks8695_drv_remove(struct platform_device *pdev) | |
1625 | { | |
1626 | struct net_device *ndev = platform_get_drvdata(pdev); | |
1627 | struct ks8695_priv *ksp = netdev_priv(ndev); | |
1628 | ||
1629 | platform_set_drvdata(pdev, NULL); | |
1630 | ||
1631 | unregister_netdev(ndev); | |
1632 | ks8695_release_device(ksp); | |
1633 | free_netdev(ndev); | |
1634 | ||
1635 | dev_dbg(&pdev->dev, "released and freed device\n"); | |
1636 | return 0; | |
1637 | } | |
1638 | ||
1639 | static struct platform_driver ks8695_driver = { | |
1640 | .driver = { | |
1641 | .name = MODULENAME, | |
1642 | .owner = THIS_MODULE, | |
1643 | }, | |
1644 | .probe = ks8695_probe, | |
1645 | .remove = __devexit_p(ks8695_drv_remove), | |
1646 | .suspend = ks8695_drv_suspend, | |
1647 | .resume = ks8695_drv_resume, | |
1648 | }; | |
1649 | ||
1650 | /* Module interface */ | |
1651 | ||
1652 | static int __init | |
1653 | ks8695_init(void) | |
1654 | { | |
1655 | printk(KERN_INFO "%s Ethernet driver, V%s\n", | |
1656 | MODULENAME, MODULEVERSION); | |
1657 | ||
1658 | return platform_driver_register(&ks8695_driver); | |
1659 | } | |
1660 | ||
1661 | static void __exit | |
1662 | ks8695_cleanup(void) | |
1663 | { | |
1664 | platform_driver_unregister(&ks8695_driver); | |
1665 | } | |
1666 | ||
1667 | module_init(ks8695_init); | |
1668 | module_exit(ks8695_cleanup); | |
1669 | ||
1670 | MODULE_AUTHOR("Simtec Electronics") | |
1671 | MODULE_DESCRIPTION("Micrel KS8695 (Centaur) Ethernet driver"); | |
1672 | MODULE_LICENSE("GPL"); | |
1673 | MODULE_ALIAS("platform:" MODULENAME); | |
1674 | ||
1675 | module_param(watchdog, int, 0400); | |
1676 | MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds"); |