Commit | Line | Data |
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5d031e9e DP |
1 | /* |
2 | * Driver for the MPC5200 Fast Ethernet Controller | |
3 | * | |
4 | * Originally written by Dale Farnsworth <dfarnsworth@mvista.com> and | |
5 | * now maintained by Sylvain Munaut <tnt@246tNt.com> | |
6 | * | |
7 | * Copyright (C) 2007 Domen Puncer, Telargo, Inc. | |
8 | * Copyright (C) 2007 Sylvain Munaut <tnt@246tNt.com> | |
9 | * Copyright (C) 2003-2004 MontaVista, Software, Inc. | |
10 | * | |
11 | * This file is licensed under the terms of the GNU General Public License | |
12 | * version 2. This program is licensed "as is" without any warranty of any | |
13 | * kind, whether express or implied. | |
14 | * | |
15 | */ | |
16 | ||
17 | #include <linux/module.h> | |
18 | ||
19 | #include <linux/kernel.h> | |
20 | #include <linux/types.h> | |
21 | #include <linux/spinlock.h> | |
22 | #include <linux/errno.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/crc32.h> | |
25 | #include <linux/hardirq.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/of_device.h> | |
28 | #include <linux/of_platform.h> | |
29 | ||
30 | #include <linux/netdevice.h> | |
31 | #include <linux/etherdevice.h> | |
32 | #include <linux/ethtool.h> | |
33 | #include <linux/skbuff.h> | |
34 | ||
35 | #include <asm/io.h> | |
36 | #include <asm/delay.h> | |
37 | #include <asm/mpc52xx.h> | |
38 | ||
39 | #include <sysdev/bestcomm/bestcomm.h> | |
40 | #include <sysdev/bestcomm/fec.h> | |
41 | ||
42 | #include "fec_mpc52xx.h" | |
43 | ||
44 | #define DRIVER_NAME "mpc52xx-fec" | |
45 | ||
80791be1 GL |
46 | #define FEC5200_PHYADDR_NONE (-1) |
47 | #define FEC5200_PHYADDR_7WIRE (-2) | |
48 | ||
49 | /* Private driver data structure */ | |
50 | struct mpc52xx_fec_priv { | |
51 | int duplex; | |
52 | int speed; | |
53 | int r_irq; | |
54 | int t_irq; | |
55 | struct mpc52xx_fec __iomem *fec; | |
56 | struct bcom_task *rx_dmatsk; | |
57 | struct bcom_task *tx_dmatsk; | |
58 | spinlock_t lock; | |
59 | int msg_enable; | |
60 | ||
61 | /* MDIO link details */ | |
62 | int phy_addr; | |
63 | unsigned int phy_speed; | |
64 | struct phy_device *phydev; | |
65 | enum phy_state link; | |
66 | }; | |
67 | ||
68 | ||
5d031e9e DP |
69 | static irqreturn_t mpc52xx_fec_interrupt(int, void *); |
70 | static irqreturn_t mpc52xx_fec_rx_interrupt(int, void *); | |
71 | static irqreturn_t mpc52xx_fec_tx_interrupt(int, void *); | |
72 | static void mpc52xx_fec_stop(struct net_device *dev); | |
73 | static void mpc52xx_fec_start(struct net_device *dev); | |
74 | static void mpc52xx_fec_reset(struct net_device *dev); | |
75 | ||
76 | static u8 mpc52xx_fec_mac_addr[6]; | |
77 | module_param_array_named(mac, mpc52xx_fec_mac_addr, byte, NULL, 0); | |
78 | MODULE_PARM_DESC(mac, "six hex digits, ie. 0x1,0x2,0xc0,0x01,0xba,0xbe"); | |
79 | ||
80 | #define MPC52xx_MESSAGES_DEFAULT ( NETIF_MSG_DRV | NETIF_MSG_PROBE | \ | |
8b983510 | 81 | NETIF_MSG_LINK | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP) |
5d031e9e DP |
82 | static int debug = -1; /* the above default */ |
83 | module_param(debug, int, 0); | |
84 | MODULE_PARM_DESC(debug, "debugging messages level"); | |
85 | ||
86 | static void mpc52xx_fec_tx_timeout(struct net_device *dev) | |
87 | { | |
88 | dev_warn(&dev->dev, "transmit timed out\n"); | |
89 | ||
90 | mpc52xx_fec_reset(dev); | |
91 | ||
92 | dev->stats.tx_errors++; | |
93 | ||
94 | netif_wake_queue(dev); | |
95 | } | |
96 | ||
97 | static void mpc52xx_fec_set_paddr(struct net_device *dev, u8 *mac) | |
98 | { | |
99 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
100 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
101 | ||
102 | out_be32(&fec->paddr1, *(u32 *)(&mac[0])); | |
103 | out_be32(&fec->paddr2, (*(u16 *)(&mac[4]) << 16) | FEC_PADDR2_TYPE); | |
104 | } | |
105 | ||
106 | static void mpc52xx_fec_get_paddr(struct net_device *dev, u8 *mac) | |
107 | { | |
108 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
109 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
110 | ||
111 | *(u32 *)(&mac[0]) = in_be32(&fec->paddr1); | |
112 | *(u16 *)(&mac[4]) = in_be32(&fec->paddr2) >> 16; | |
113 | } | |
114 | ||
115 | static int mpc52xx_fec_set_mac_address(struct net_device *dev, void *addr) | |
116 | { | |
117 | struct sockaddr *sock = addr; | |
118 | ||
119 | memcpy(dev->dev_addr, sock->sa_data, dev->addr_len); | |
120 | ||
121 | mpc52xx_fec_set_paddr(dev, sock->sa_data); | |
122 | return 0; | |
123 | } | |
124 | ||
125 | static void mpc52xx_fec_free_rx_buffers(struct net_device *dev, struct bcom_task *s) | |
126 | { | |
127 | while (!bcom_queue_empty(s)) { | |
128 | struct bcom_fec_bd *bd; | |
129 | struct sk_buff *skb; | |
130 | ||
131 | skb = bcom_retrieve_buffer(s, NULL, (struct bcom_bd **)&bd); | |
132 | dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE); | |
133 | kfree_skb(skb); | |
134 | } | |
135 | } | |
136 | ||
137 | static int mpc52xx_fec_alloc_rx_buffers(struct net_device *dev, struct bcom_task *rxtsk) | |
138 | { | |
139 | while (!bcom_queue_full(rxtsk)) { | |
140 | struct sk_buff *skb; | |
141 | struct bcom_fec_bd *bd; | |
142 | ||
143 | skb = dev_alloc_skb(FEC_RX_BUFFER_SIZE); | |
144 | if (skb == NULL) | |
145 | return -EAGAIN; | |
146 | ||
147 | /* zero out the initial receive buffers to aid debugging */ | |
148 | memset(skb->data, 0, FEC_RX_BUFFER_SIZE); | |
149 | ||
150 | bd = (struct bcom_fec_bd *)bcom_prepare_next_buffer(rxtsk); | |
151 | ||
152 | bd->status = FEC_RX_BUFFER_SIZE; | |
153 | bd->skb_pa = dma_map_single(&dev->dev, skb->data, | |
154 | FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE); | |
155 | ||
156 | bcom_submit_next_buffer(rxtsk, skb); | |
157 | } | |
158 | ||
159 | return 0; | |
160 | } | |
161 | ||
162 | /* based on generic_adjust_link from fs_enet-main.c */ | |
163 | static void mpc52xx_fec_adjust_link(struct net_device *dev) | |
164 | { | |
165 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
166 | struct phy_device *phydev = priv->phydev; | |
167 | int new_state = 0; | |
168 | ||
169 | if (phydev->link != PHY_DOWN) { | |
170 | if (phydev->duplex != priv->duplex) { | |
171 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
172 | u32 rcntrl; | |
173 | u32 tcntrl; | |
174 | ||
175 | new_state = 1; | |
176 | priv->duplex = phydev->duplex; | |
177 | ||
178 | rcntrl = in_be32(&fec->r_cntrl); | |
179 | tcntrl = in_be32(&fec->x_cntrl); | |
180 | ||
181 | rcntrl &= ~FEC_RCNTRL_DRT; | |
182 | tcntrl &= ~FEC_TCNTRL_FDEN; | |
183 | if (phydev->duplex == DUPLEX_FULL) | |
184 | tcntrl |= FEC_TCNTRL_FDEN; /* FD enable */ | |
185 | else | |
186 | rcntrl |= FEC_RCNTRL_DRT; /* disable Rx on Tx (HD) */ | |
187 | ||
188 | out_be32(&fec->r_cntrl, rcntrl); | |
189 | out_be32(&fec->x_cntrl, tcntrl); | |
190 | } | |
191 | ||
192 | if (phydev->speed != priv->speed) { | |
193 | new_state = 1; | |
194 | priv->speed = phydev->speed; | |
195 | } | |
196 | ||
197 | if (priv->link == PHY_DOWN) { | |
198 | new_state = 1; | |
199 | priv->link = phydev->link; | |
200 | netif_schedule(dev); | |
201 | netif_carrier_on(dev); | |
202 | netif_start_queue(dev); | |
203 | } | |
204 | ||
205 | } else if (priv->link) { | |
206 | new_state = 1; | |
207 | priv->link = PHY_DOWN; | |
208 | priv->speed = 0; | |
209 | priv->duplex = -1; | |
210 | netif_stop_queue(dev); | |
211 | netif_carrier_off(dev); | |
212 | } | |
213 | ||
214 | if (new_state && netif_msg_link(priv)) | |
215 | phy_print_status(phydev); | |
216 | } | |
217 | ||
218 | static int mpc52xx_fec_init_phy(struct net_device *dev) | |
219 | { | |
220 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
221 | struct phy_device *phydev; | |
222 | char phy_id[BUS_ID_SIZE]; | |
223 | ||
9d9326d3 | 224 | snprintf(phy_id, BUS_ID_SIZE, "%x:%02x", |
5d031e9e DP |
225 | (unsigned int)dev->base_addr, priv->phy_addr); |
226 | ||
227 | priv->link = PHY_DOWN; | |
228 | priv->speed = 0; | |
229 | priv->duplex = -1; | |
230 | ||
231 | phydev = phy_connect(dev, phy_id, &mpc52xx_fec_adjust_link, 0, PHY_INTERFACE_MODE_MII); | |
232 | if (IS_ERR(phydev)) { | |
233 | dev_err(&dev->dev, "phy_connect failed\n"); | |
234 | return PTR_ERR(phydev); | |
235 | } | |
236 | dev_info(&dev->dev, "attached phy %i to driver %s\n", | |
237 | phydev->addr, phydev->drv->name); | |
238 | ||
239 | priv->phydev = phydev; | |
240 | ||
241 | return 0; | |
242 | } | |
243 | ||
244 | static int mpc52xx_fec_phy_start(struct net_device *dev) | |
245 | { | |
246 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
247 | int err; | |
248 | ||
80791be1 | 249 | if (priv->phy_addr < 0) |
5d031e9e DP |
250 | return 0; |
251 | ||
252 | err = mpc52xx_fec_init_phy(dev); | |
253 | if (err) { | |
254 | dev_err(&dev->dev, "mpc52xx_fec_init_phy failed\n"); | |
255 | return err; | |
256 | } | |
257 | ||
258 | /* reset phy - this also wakes it from PDOWN */ | |
259 | phy_write(priv->phydev, MII_BMCR, BMCR_RESET); | |
260 | phy_start(priv->phydev); | |
261 | ||
262 | return 0; | |
263 | } | |
264 | ||
265 | static void mpc52xx_fec_phy_stop(struct net_device *dev) | |
266 | { | |
267 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
268 | ||
80791be1 | 269 | if (!priv->phydev) |
5d031e9e DP |
270 | return; |
271 | ||
272 | phy_disconnect(priv->phydev); | |
273 | /* power down phy */ | |
274 | phy_stop(priv->phydev); | |
275 | phy_write(priv->phydev, MII_BMCR, BMCR_PDOWN); | |
276 | } | |
277 | ||
278 | static int mpc52xx_fec_phy_mii_ioctl(struct mpc52xx_fec_priv *priv, | |
279 | struct mii_ioctl_data *mii_data, int cmd) | |
280 | { | |
80791be1 | 281 | if (!priv->phydev) |
5d031e9e DP |
282 | return -ENOTSUPP; |
283 | ||
284 | return phy_mii_ioctl(priv->phydev, mii_data, cmd); | |
285 | } | |
286 | ||
287 | static void mpc52xx_fec_phy_hw_init(struct mpc52xx_fec_priv *priv) | |
288 | { | |
289 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
290 | ||
80791be1 | 291 | if (priv->phydev) |
5d031e9e DP |
292 | return; |
293 | ||
294 | out_be32(&fec->mii_speed, priv->phy_speed); | |
295 | } | |
296 | ||
297 | static int mpc52xx_fec_open(struct net_device *dev) | |
298 | { | |
299 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
300 | int err = -EBUSY; | |
301 | ||
302 | if (request_irq(dev->irq, &mpc52xx_fec_interrupt, IRQF_SHARED, | |
303 | DRIVER_NAME "_ctrl", dev)) { | |
304 | dev_err(&dev->dev, "ctrl interrupt request failed\n"); | |
305 | goto out; | |
306 | } | |
307 | if (request_irq(priv->r_irq, &mpc52xx_fec_rx_interrupt, 0, | |
308 | DRIVER_NAME "_rx", dev)) { | |
309 | dev_err(&dev->dev, "rx interrupt request failed\n"); | |
310 | goto free_ctrl_irq; | |
311 | } | |
312 | if (request_irq(priv->t_irq, &mpc52xx_fec_tx_interrupt, 0, | |
313 | DRIVER_NAME "_tx", dev)) { | |
314 | dev_err(&dev->dev, "tx interrupt request failed\n"); | |
315 | goto free_2irqs; | |
316 | } | |
317 | ||
318 | bcom_fec_rx_reset(priv->rx_dmatsk); | |
319 | bcom_fec_tx_reset(priv->tx_dmatsk); | |
320 | ||
321 | err = mpc52xx_fec_alloc_rx_buffers(dev, priv->rx_dmatsk); | |
322 | if (err) { | |
323 | dev_err(&dev->dev, "mpc52xx_fec_alloc_rx_buffers failed\n"); | |
324 | goto free_irqs; | |
325 | } | |
326 | ||
327 | err = mpc52xx_fec_phy_start(dev); | |
328 | if (err) | |
329 | goto free_skbs; | |
330 | ||
331 | bcom_enable(priv->rx_dmatsk); | |
332 | bcom_enable(priv->tx_dmatsk); | |
333 | ||
334 | mpc52xx_fec_start(dev); | |
335 | ||
336 | netif_start_queue(dev); | |
337 | ||
338 | return 0; | |
339 | ||
340 | free_skbs: | |
341 | mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk); | |
342 | ||
343 | free_irqs: | |
344 | free_irq(priv->t_irq, dev); | |
345 | free_2irqs: | |
346 | free_irq(priv->r_irq, dev); | |
347 | free_ctrl_irq: | |
348 | free_irq(dev->irq, dev); | |
349 | out: | |
350 | ||
351 | return err; | |
352 | } | |
353 | ||
354 | static int mpc52xx_fec_close(struct net_device *dev) | |
355 | { | |
356 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
357 | ||
358 | netif_stop_queue(dev); | |
359 | ||
360 | mpc52xx_fec_stop(dev); | |
361 | ||
362 | mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk); | |
363 | ||
364 | free_irq(dev->irq, dev); | |
365 | free_irq(priv->r_irq, dev); | |
366 | free_irq(priv->t_irq, dev); | |
367 | ||
368 | mpc52xx_fec_phy_stop(dev); | |
369 | ||
370 | return 0; | |
371 | } | |
372 | ||
373 | /* This will only be invoked if your driver is _not_ in XOFF state. | |
374 | * What this means is that you need not check it, and that this | |
375 | * invariant will hold if you make sure that the netif_*_queue() | |
376 | * calls are done at the proper times. | |
377 | */ | |
378 | static int mpc52xx_fec_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
379 | { | |
380 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
381 | struct bcom_fec_bd *bd; | |
382 | ||
383 | if (bcom_queue_full(priv->tx_dmatsk)) { | |
384 | if (net_ratelimit()) | |
385 | dev_err(&dev->dev, "transmit queue overrun\n"); | |
386 | return 1; | |
387 | } | |
388 | ||
389 | spin_lock_irq(&priv->lock); | |
390 | dev->trans_start = jiffies; | |
391 | ||
392 | bd = (struct bcom_fec_bd *) | |
393 | bcom_prepare_next_buffer(priv->tx_dmatsk); | |
394 | ||
395 | bd->status = skb->len | BCOM_FEC_TX_BD_TFD | BCOM_FEC_TX_BD_TC; | |
396 | bd->skb_pa = dma_map_single(&dev->dev, skb->data, skb->len, DMA_TO_DEVICE); | |
397 | ||
398 | bcom_submit_next_buffer(priv->tx_dmatsk, skb); | |
399 | ||
400 | if (bcom_queue_full(priv->tx_dmatsk)) { | |
401 | netif_stop_queue(dev); | |
402 | } | |
403 | ||
404 | spin_unlock_irq(&priv->lock); | |
405 | ||
406 | return 0; | |
407 | } | |
408 | ||
409 | /* This handles BestComm transmit task interrupts | |
410 | */ | |
411 | static irqreturn_t mpc52xx_fec_tx_interrupt(int irq, void *dev_id) | |
412 | { | |
413 | struct net_device *dev = dev_id; | |
414 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
415 | ||
416 | spin_lock(&priv->lock); | |
417 | ||
418 | while (bcom_buffer_done(priv->tx_dmatsk)) { | |
419 | struct sk_buff *skb; | |
420 | struct bcom_fec_bd *bd; | |
421 | skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL, | |
422 | (struct bcom_bd **)&bd); | |
423 | dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_TO_DEVICE); | |
424 | ||
425 | dev_kfree_skb_irq(skb); | |
426 | } | |
427 | ||
428 | netif_wake_queue(dev); | |
429 | ||
430 | spin_unlock(&priv->lock); | |
431 | ||
432 | return IRQ_HANDLED; | |
433 | } | |
434 | ||
435 | static irqreturn_t mpc52xx_fec_rx_interrupt(int irq, void *dev_id) | |
436 | { | |
437 | struct net_device *dev = dev_id; | |
438 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
439 | ||
440 | while (bcom_buffer_done(priv->rx_dmatsk)) { | |
441 | struct sk_buff *skb; | |
442 | struct sk_buff *rskb; | |
443 | struct bcom_fec_bd *bd; | |
444 | u32 status; | |
445 | ||
446 | rskb = bcom_retrieve_buffer(priv->rx_dmatsk, &status, | |
447 | (struct bcom_bd **)&bd); | |
4c537e63 | 448 | dma_unmap_single(&dev->dev, bd->skb_pa, rskb->len, DMA_FROM_DEVICE); |
5d031e9e DP |
449 | |
450 | /* Test for errors in received frame */ | |
451 | if (status & BCOM_FEC_RX_BD_ERRORS) { | |
452 | /* Drop packet and reuse the buffer */ | |
453 | bd = (struct bcom_fec_bd *) | |
454 | bcom_prepare_next_buffer(priv->rx_dmatsk); | |
455 | ||
456 | bd->status = FEC_RX_BUFFER_SIZE; | |
457 | bd->skb_pa = dma_map_single(&dev->dev, rskb->data, | |
458 | FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE); | |
459 | ||
460 | bcom_submit_next_buffer(priv->rx_dmatsk, rskb); | |
461 | ||
462 | dev->stats.rx_dropped++; | |
463 | ||
464 | continue; | |
465 | } | |
466 | ||
467 | /* skbs are allocated on open, so now we allocate a new one, | |
468 | * and remove the old (with the packet) */ | |
469 | skb = dev_alloc_skb(FEC_RX_BUFFER_SIZE); | |
470 | if (skb) { | |
471 | /* Process the received skb */ | |
472 | int length = status & BCOM_FEC_RX_BD_LEN_MASK; | |
473 | ||
474 | skb_put(rskb, length - 4); /* length without CRC32 */ | |
475 | ||
476 | rskb->dev = dev; | |
477 | rskb->protocol = eth_type_trans(rskb, dev); | |
478 | ||
479 | netif_rx(rskb); | |
480 | dev->last_rx = jiffies; | |
481 | } else { | |
482 | /* Can't get a new one : reuse the same & drop pkt */ | |
483 | dev_notice(&dev->dev, "Memory squeeze, dropping packet.\n"); | |
484 | dev->stats.rx_dropped++; | |
485 | ||
486 | skb = rskb; | |
487 | } | |
488 | ||
489 | bd = (struct bcom_fec_bd *) | |
490 | bcom_prepare_next_buffer(priv->rx_dmatsk); | |
491 | ||
492 | bd->status = FEC_RX_BUFFER_SIZE; | |
4c537e63 | 493 | bd->skb_pa = dma_map_single(&dev->dev, skb->data, |
5d031e9e DP |
494 | FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE); |
495 | ||
496 | bcom_submit_next_buffer(priv->rx_dmatsk, skb); | |
497 | } | |
498 | ||
499 | return IRQ_HANDLED; | |
500 | } | |
501 | ||
502 | static irqreturn_t mpc52xx_fec_interrupt(int irq, void *dev_id) | |
503 | { | |
504 | struct net_device *dev = dev_id; | |
505 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
506 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
507 | u32 ievent; | |
508 | ||
509 | ievent = in_be32(&fec->ievent); | |
510 | ||
511 | ievent &= ~FEC_IEVENT_MII; /* mii is handled separately */ | |
512 | if (!ievent) | |
513 | return IRQ_NONE; | |
514 | ||
515 | out_be32(&fec->ievent, ievent); /* clear pending events */ | |
516 | ||
8f3ba2dc SH |
517 | /* on fifo error, soft-reset fec */ |
518 | if (ievent & (FEC_IEVENT_RFIFO_ERROR | FEC_IEVENT_XFIFO_ERROR)) { | |
519 | ||
520 | if (net_ratelimit() && (ievent & FEC_IEVENT_RFIFO_ERROR)) | |
521 | dev_warn(&dev->dev, "FEC_IEVENT_RFIFO_ERROR\n"); | |
522 | if (net_ratelimit() && (ievent & FEC_IEVENT_XFIFO_ERROR)) | |
523 | dev_warn(&dev->dev, "FEC_IEVENT_XFIFO_ERROR\n"); | |
524 | ||
525 | mpc52xx_fec_reset(dev); | |
526 | ||
527 | netif_wake_queue(dev); | |
5d031e9e DP |
528 | return IRQ_HANDLED; |
529 | } | |
530 | ||
8f3ba2dc SH |
531 | if (ievent & ~FEC_IEVENT_TFINT) |
532 | dev_dbg(&dev->dev, "ievent: %08x\n", ievent); | |
5d031e9e | 533 | |
5d031e9e DP |
534 | return IRQ_HANDLED; |
535 | } | |
536 | ||
537 | /* | |
538 | * Get the current statistics. | |
539 | * This may be called with the card open or closed. | |
540 | */ | |
541 | static struct net_device_stats *mpc52xx_fec_get_stats(struct net_device *dev) | |
542 | { | |
543 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
544 | struct net_device_stats *stats = &dev->stats; | |
545 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
546 | ||
547 | stats->rx_bytes = in_be32(&fec->rmon_r_octets); | |
548 | stats->rx_packets = in_be32(&fec->rmon_r_packets); | |
549 | stats->rx_errors = in_be32(&fec->rmon_r_crc_align) + | |
550 | in_be32(&fec->rmon_r_undersize) + | |
551 | in_be32(&fec->rmon_r_oversize) + | |
552 | in_be32(&fec->rmon_r_frag) + | |
553 | in_be32(&fec->rmon_r_jab); | |
554 | ||
555 | stats->tx_bytes = in_be32(&fec->rmon_t_octets); | |
556 | stats->tx_packets = in_be32(&fec->rmon_t_packets); | |
557 | stats->tx_errors = in_be32(&fec->rmon_t_crc_align) + | |
558 | in_be32(&fec->rmon_t_undersize) + | |
559 | in_be32(&fec->rmon_t_oversize) + | |
560 | in_be32(&fec->rmon_t_frag) + | |
561 | in_be32(&fec->rmon_t_jab); | |
562 | ||
563 | stats->multicast = in_be32(&fec->rmon_r_mc_pkt); | |
564 | stats->collisions = in_be32(&fec->rmon_t_col); | |
565 | ||
566 | /* detailed rx_errors: */ | |
567 | stats->rx_length_errors = in_be32(&fec->rmon_r_undersize) | |
568 | + in_be32(&fec->rmon_r_oversize) | |
569 | + in_be32(&fec->rmon_r_frag) | |
570 | + in_be32(&fec->rmon_r_jab); | |
571 | stats->rx_over_errors = in_be32(&fec->r_macerr); | |
572 | stats->rx_crc_errors = in_be32(&fec->ieee_r_crc); | |
573 | stats->rx_frame_errors = in_be32(&fec->ieee_r_align); | |
574 | stats->rx_fifo_errors = in_be32(&fec->rmon_r_drop); | |
575 | stats->rx_missed_errors = in_be32(&fec->rmon_r_drop); | |
576 | ||
577 | /* detailed tx_errors: */ | |
578 | stats->tx_aborted_errors = 0; | |
579 | stats->tx_carrier_errors = in_be32(&fec->ieee_t_cserr); | |
580 | stats->tx_fifo_errors = in_be32(&fec->rmon_t_drop); | |
581 | stats->tx_heartbeat_errors = in_be32(&fec->ieee_t_sqe); | |
582 | stats->tx_window_errors = in_be32(&fec->ieee_t_lcol); | |
583 | ||
584 | return stats; | |
585 | } | |
586 | ||
587 | /* | |
588 | * Read MIB counters in order to reset them, | |
589 | * then zero all the stats fields in memory | |
590 | */ | |
591 | static void mpc52xx_fec_reset_stats(struct net_device *dev) | |
592 | { | |
593 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
594 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
595 | ||
596 | out_be32(&fec->mib_control, FEC_MIB_DISABLE); | |
cc154ac6 AV |
597 | memset_io(&fec->rmon_t_drop, 0, |
598 | offsetof(struct mpc52xx_fec, reserved10) - | |
599 | offsetof(struct mpc52xx_fec, rmon_t_drop)); | |
5d031e9e DP |
600 | out_be32(&fec->mib_control, 0); |
601 | ||
602 | memset(&dev->stats, 0, sizeof(dev->stats)); | |
603 | } | |
604 | ||
605 | /* | |
606 | * Set or clear the multicast filter for this adaptor. | |
607 | */ | |
608 | static void mpc52xx_fec_set_multicast_list(struct net_device *dev) | |
609 | { | |
610 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
611 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
612 | u32 rx_control; | |
613 | ||
614 | rx_control = in_be32(&fec->r_cntrl); | |
615 | ||
616 | if (dev->flags & IFF_PROMISC) { | |
617 | rx_control |= FEC_RCNTRL_PROM; | |
618 | out_be32(&fec->r_cntrl, rx_control); | |
619 | } else { | |
620 | rx_control &= ~FEC_RCNTRL_PROM; | |
621 | out_be32(&fec->r_cntrl, rx_control); | |
622 | ||
623 | if (dev->flags & IFF_ALLMULTI) { | |
624 | out_be32(&fec->gaddr1, 0xffffffff); | |
625 | out_be32(&fec->gaddr2, 0xffffffff); | |
626 | } else { | |
627 | u32 crc; | |
628 | int i; | |
629 | struct dev_mc_list *dmi; | |
630 | u32 gaddr1 = 0x00000000; | |
631 | u32 gaddr2 = 0x00000000; | |
632 | ||
633 | dmi = dev->mc_list; | |
634 | for (i=0; i<dev->mc_count; i++) { | |
635 | crc = ether_crc_le(6, dmi->dmi_addr) >> 26; | |
636 | if (crc >= 32) | |
637 | gaddr1 |= 1 << (crc-32); | |
638 | else | |
639 | gaddr2 |= 1 << crc; | |
640 | dmi = dmi->next; | |
641 | } | |
642 | out_be32(&fec->gaddr1, gaddr1); | |
643 | out_be32(&fec->gaddr2, gaddr2); | |
644 | } | |
645 | } | |
646 | } | |
647 | ||
648 | /** | |
649 | * mpc52xx_fec_hw_init | |
650 | * @dev: network device | |
651 | * | |
652 | * Setup various hardware setting, only needed once on start | |
653 | */ | |
654 | static void mpc52xx_fec_hw_init(struct net_device *dev) | |
655 | { | |
656 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
657 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
658 | int i; | |
659 | ||
660 | /* Whack a reset. We should wait for this. */ | |
661 | out_be32(&fec->ecntrl, FEC_ECNTRL_RESET); | |
662 | for (i = 0; i < FEC_RESET_DELAY; ++i) { | |
663 | if ((in_be32(&fec->ecntrl) & FEC_ECNTRL_RESET) == 0) | |
664 | break; | |
665 | udelay(1); | |
666 | } | |
667 | if (i == FEC_RESET_DELAY) | |
668 | dev_err(&dev->dev, "FEC Reset timeout!\n"); | |
669 | ||
670 | /* set pause to 0x20 frames */ | |
671 | out_be32(&fec->op_pause, FEC_OP_PAUSE_OPCODE | 0x20); | |
672 | ||
673 | /* high service request will be deasserted when there's < 7 bytes in fifo | |
674 | * low service request will be deasserted when there's < 4*7 bytes in fifo | |
675 | */ | |
676 | out_be32(&fec->rfifo_cntrl, FEC_FIFO_CNTRL_FRAME | FEC_FIFO_CNTRL_LTG_7); | |
677 | out_be32(&fec->tfifo_cntrl, FEC_FIFO_CNTRL_FRAME | FEC_FIFO_CNTRL_LTG_7); | |
678 | ||
679 | /* alarm when <= x bytes in FIFO */ | |
680 | out_be32(&fec->rfifo_alarm, 0x0000030c); | |
681 | out_be32(&fec->tfifo_alarm, 0x00000100); | |
682 | ||
683 | /* begin transmittion when 256 bytes are in FIFO (or EOF or FIFO full) */ | |
684 | out_be32(&fec->x_wmrk, FEC_FIFO_WMRK_256B); | |
685 | ||
686 | /* enable crc generation */ | |
687 | out_be32(&fec->xmit_fsm, FEC_XMIT_FSM_APPEND_CRC | FEC_XMIT_FSM_ENABLE_CRC); | |
688 | out_be32(&fec->iaddr1, 0x00000000); /* No individual filter */ | |
689 | out_be32(&fec->iaddr2, 0x00000000); /* No individual filter */ | |
690 | ||
691 | /* set phy speed. | |
692 | * this can't be done in phy driver, since it needs to be called | |
693 | * before fec stuff (even on resume) */ | |
694 | mpc52xx_fec_phy_hw_init(priv); | |
695 | } | |
696 | ||
697 | /** | |
698 | * mpc52xx_fec_start | |
699 | * @dev: network device | |
700 | * | |
701 | * This function is called to start or restart the FEC during a link | |
702 | * change. This happens on fifo errors or when switching between half | |
703 | * and full duplex. | |
704 | */ | |
705 | static void mpc52xx_fec_start(struct net_device *dev) | |
706 | { | |
707 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
708 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
709 | u32 rcntrl; | |
710 | u32 tcntrl; | |
711 | u32 tmp; | |
712 | ||
713 | /* clear sticky error bits */ | |
714 | tmp = FEC_FIFO_STATUS_ERR | FEC_FIFO_STATUS_UF | FEC_FIFO_STATUS_OF; | |
715 | out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status) & tmp); | |
716 | out_be32(&fec->tfifo_status, in_be32(&fec->tfifo_status) & tmp); | |
717 | ||
718 | /* FIFOs will reset on mpc52xx_fec_enable */ | |
719 | out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_ENABLE_IS_RESET); | |
720 | ||
721 | /* Set station address. */ | |
722 | mpc52xx_fec_set_paddr(dev, dev->dev_addr); | |
723 | ||
724 | mpc52xx_fec_set_multicast_list(dev); | |
725 | ||
726 | /* set max frame len, enable flow control, select mii mode */ | |
727 | rcntrl = FEC_RX_BUFFER_SIZE << 16; /* max frame length */ | |
728 | rcntrl |= FEC_RCNTRL_FCE; | |
729 | ||
80791be1 | 730 | if (priv->phy_addr != FEC5200_PHYADDR_7WIRE) |
5d031e9e DP |
731 | rcntrl |= FEC_RCNTRL_MII_MODE; |
732 | ||
733 | if (priv->duplex == DUPLEX_FULL) | |
734 | tcntrl = FEC_TCNTRL_FDEN; /* FD enable */ | |
735 | else { | |
736 | rcntrl |= FEC_RCNTRL_DRT; /* disable Rx on Tx (HD) */ | |
737 | tcntrl = 0; | |
738 | } | |
739 | out_be32(&fec->r_cntrl, rcntrl); | |
740 | out_be32(&fec->x_cntrl, tcntrl); | |
741 | ||
742 | /* Clear any outstanding interrupt. */ | |
743 | out_be32(&fec->ievent, 0xffffffff); | |
744 | ||
745 | /* Enable interrupts we wish to service. */ | |
746 | out_be32(&fec->imask, FEC_IMASK_ENABLE); | |
747 | ||
748 | /* And last, enable the transmit and receive processing. */ | |
749 | out_be32(&fec->ecntrl, FEC_ECNTRL_ETHER_EN); | |
750 | out_be32(&fec->r_des_active, 0x01000000); | |
751 | } | |
752 | ||
753 | /** | |
754 | * mpc52xx_fec_stop | |
755 | * @dev: network device | |
756 | * | |
757 | * stop all activity on fec and empty dma buffers | |
758 | */ | |
759 | static void mpc52xx_fec_stop(struct net_device *dev) | |
760 | { | |
761 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
762 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
763 | unsigned long timeout; | |
764 | ||
765 | /* disable all interrupts */ | |
766 | out_be32(&fec->imask, 0); | |
767 | ||
768 | /* Disable the rx task. */ | |
769 | bcom_disable(priv->rx_dmatsk); | |
770 | ||
771 | /* Wait for tx queue to drain, but only if we're in process context */ | |
772 | if (!in_interrupt()) { | |
773 | timeout = jiffies + msecs_to_jiffies(2000); | |
774 | while (time_before(jiffies, timeout) && | |
775 | !bcom_queue_empty(priv->tx_dmatsk)) | |
776 | msleep(100); | |
777 | ||
778 | if (time_after_eq(jiffies, timeout)) | |
779 | dev_err(&dev->dev, "queues didn't drain\n"); | |
780 | #if 1 | |
781 | if (time_after_eq(jiffies, timeout)) { | |
782 | dev_err(&dev->dev, " tx: index: %i, outdex: %i\n", | |
783 | priv->tx_dmatsk->index, | |
784 | priv->tx_dmatsk->outdex); | |
785 | dev_err(&dev->dev, " rx: index: %i, outdex: %i\n", | |
786 | priv->rx_dmatsk->index, | |
787 | priv->rx_dmatsk->outdex); | |
788 | } | |
789 | #endif | |
790 | } | |
791 | ||
792 | bcom_disable(priv->tx_dmatsk); | |
793 | ||
794 | /* Stop FEC */ | |
795 | out_be32(&fec->ecntrl, in_be32(&fec->ecntrl) & ~FEC_ECNTRL_ETHER_EN); | |
796 | ||
797 | return; | |
798 | } | |
799 | ||
800 | /* reset fec and bestcomm tasks */ | |
801 | static void mpc52xx_fec_reset(struct net_device *dev) | |
802 | { | |
803 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
804 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
805 | ||
806 | mpc52xx_fec_stop(dev); | |
807 | ||
808 | out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status)); | |
809 | out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_RESET_FIFO); | |
810 | ||
811 | mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk); | |
812 | ||
813 | mpc52xx_fec_hw_init(dev); | |
814 | ||
815 | phy_stop(priv->phydev); | |
816 | phy_write(priv->phydev, MII_BMCR, BMCR_RESET); | |
817 | phy_start(priv->phydev); | |
818 | ||
819 | bcom_fec_rx_reset(priv->rx_dmatsk); | |
820 | bcom_fec_tx_reset(priv->tx_dmatsk); | |
821 | ||
822 | mpc52xx_fec_alloc_rx_buffers(dev, priv->rx_dmatsk); | |
823 | ||
824 | bcom_enable(priv->rx_dmatsk); | |
825 | bcom_enable(priv->tx_dmatsk); | |
826 | ||
827 | mpc52xx_fec_start(dev); | |
828 | } | |
829 | ||
830 | ||
831 | /* ethtool interface */ | |
832 | static void mpc52xx_fec_get_drvinfo(struct net_device *dev, | |
833 | struct ethtool_drvinfo *info) | |
834 | { | |
835 | strcpy(info->driver, DRIVER_NAME); | |
836 | } | |
837 | ||
838 | static int mpc52xx_fec_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
839 | { | |
840 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
841 | return phy_ethtool_gset(priv->phydev, cmd); | |
842 | } | |
843 | ||
844 | static int mpc52xx_fec_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
845 | { | |
846 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
847 | return phy_ethtool_sset(priv->phydev, cmd); | |
848 | } | |
849 | ||
850 | static u32 mpc52xx_fec_get_msglevel(struct net_device *dev) | |
851 | { | |
852 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
853 | return priv->msg_enable; | |
854 | } | |
855 | ||
856 | static void mpc52xx_fec_set_msglevel(struct net_device *dev, u32 level) | |
857 | { | |
858 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
859 | priv->msg_enable = level; | |
860 | } | |
861 | ||
862 | static const struct ethtool_ops mpc52xx_fec_ethtool_ops = { | |
863 | .get_drvinfo = mpc52xx_fec_get_drvinfo, | |
864 | .get_settings = mpc52xx_fec_get_settings, | |
865 | .set_settings = mpc52xx_fec_set_settings, | |
866 | .get_link = ethtool_op_get_link, | |
867 | .get_msglevel = mpc52xx_fec_get_msglevel, | |
868 | .set_msglevel = mpc52xx_fec_set_msglevel, | |
869 | }; | |
870 | ||
871 | ||
872 | static int mpc52xx_fec_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
873 | { | |
874 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
875 | ||
876 | return mpc52xx_fec_phy_mii_ioctl(priv, if_mii(rq), cmd); | |
877 | } | |
878 | ||
879 | /* ======================================================================== */ | |
880 | /* OF Driver */ | |
881 | /* ======================================================================== */ | |
882 | ||
883 | static int __devinit | |
884 | mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match) | |
885 | { | |
886 | int rv; | |
887 | struct net_device *ndev; | |
888 | struct mpc52xx_fec_priv *priv = NULL; | |
889 | struct resource mem; | |
80791be1 GL |
890 | struct device_node *phy_node; |
891 | const phandle *phy_handle; | |
892 | const u32 *prop; | |
893 | int prop_size; | |
5d031e9e DP |
894 | |
895 | phys_addr_t rx_fifo; | |
896 | phys_addr_t tx_fifo; | |
897 | ||
898 | /* Get the ether ndev & it's private zone */ | |
899 | ndev = alloc_etherdev(sizeof(struct mpc52xx_fec_priv)); | |
900 | if (!ndev) | |
901 | return -ENOMEM; | |
902 | ||
903 | priv = netdev_priv(ndev); | |
904 | ||
905 | /* Reserve FEC control zone */ | |
906 | rv = of_address_to_resource(op->node, 0, &mem); | |
907 | if (rv) { | |
908 | printk(KERN_ERR DRIVER_NAME ": " | |
909 | "Error while parsing device node resource\n" ); | |
910 | return rv; | |
911 | } | |
48d58459 | 912 | if ((mem.end - mem.start + 1) < sizeof(struct mpc52xx_fec)) { |
5d031e9e | 913 | printk(KERN_ERR DRIVER_NAME |
48d58459 | 914 | " - invalid resource size (%lx < %x), check mpc52xx_devices.c\n", |
5d031e9e DP |
915 | (unsigned long)(mem.end - mem.start + 1), sizeof(struct mpc52xx_fec)); |
916 | return -EINVAL; | |
917 | } | |
918 | ||
919 | if (!request_mem_region(mem.start, sizeof(struct mpc52xx_fec), DRIVER_NAME)) | |
920 | return -EBUSY; | |
921 | ||
922 | /* Init ether ndev with what we have */ | |
923 | ndev->open = mpc52xx_fec_open; | |
924 | ndev->stop = mpc52xx_fec_close; | |
925 | ndev->hard_start_xmit = mpc52xx_fec_hard_start_xmit; | |
926 | ndev->do_ioctl = mpc52xx_fec_ioctl; | |
927 | ndev->ethtool_ops = &mpc52xx_fec_ethtool_ops; | |
928 | ndev->get_stats = mpc52xx_fec_get_stats; | |
929 | ndev->set_mac_address = mpc52xx_fec_set_mac_address; | |
930 | ndev->set_multicast_list = mpc52xx_fec_set_multicast_list; | |
931 | ndev->tx_timeout = mpc52xx_fec_tx_timeout; | |
932 | ndev->watchdog_timeo = FEC_WATCHDOG_TIMEOUT; | |
933 | ndev->base_addr = mem.start; | |
934 | ||
935 | priv->t_irq = priv->r_irq = ndev->irq = NO_IRQ; /* IRQ are free for now */ | |
936 | ||
937 | spin_lock_init(&priv->lock); | |
938 | ||
939 | /* ioremap the zones */ | |
940 | priv->fec = ioremap(mem.start, sizeof(struct mpc52xx_fec)); | |
941 | ||
942 | if (!priv->fec) { | |
943 | rv = -ENOMEM; | |
944 | goto probe_error; | |
945 | } | |
946 | ||
947 | /* Bestcomm init */ | |
948 | rx_fifo = ndev->base_addr + offsetof(struct mpc52xx_fec, rfifo_data); | |
949 | tx_fifo = ndev->base_addr + offsetof(struct mpc52xx_fec, tfifo_data); | |
950 | ||
951 | priv->rx_dmatsk = bcom_fec_rx_init(FEC_RX_NUM_BD, rx_fifo, FEC_RX_BUFFER_SIZE); | |
952 | priv->tx_dmatsk = bcom_fec_tx_init(FEC_TX_NUM_BD, tx_fifo); | |
953 | ||
954 | if (!priv->rx_dmatsk || !priv->tx_dmatsk) { | |
955 | printk(KERN_ERR DRIVER_NAME ": Can not init SDMA tasks\n" ); | |
956 | rv = -ENOMEM; | |
957 | goto probe_error; | |
958 | } | |
959 | ||
960 | /* Get the IRQ we need one by one */ | |
961 | /* Control */ | |
962 | ndev->irq = irq_of_parse_and_map(op->node, 0); | |
963 | ||
964 | /* RX */ | |
965 | priv->r_irq = bcom_get_task_irq(priv->rx_dmatsk); | |
966 | ||
967 | /* TX */ | |
968 | priv->t_irq = bcom_get_task_irq(priv->tx_dmatsk); | |
969 | ||
970 | /* MAC address init */ | |
971 | if (!is_zero_ether_addr(mpc52xx_fec_mac_addr)) | |
972 | memcpy(ndev->dev_addr, mpc52xx_fec_mac_addr, 6); | |
973 | else | |
974 | mpc52xx_fec_get_paddr(ndev, ndev->dev_addr); | |
975 | ||
976 | priv->msg_enable = netif_msg_init(debug, MPC52xx_MESSAGES_DEFAULT); | |
5d031e9e | 977 | |
80791be1 GL |
978 | /* |
979 | * Link mode configuration | |
980 | */ | |
5d031e9e | 981 | |
80791be1 GL |
982 | /* Start with safe defaults for link connection */ |
983 | priv->phy_addr = FEC5200_PHYADDR_NONE; | |
984 | priv->speed = 100; | |
985 | priv->duplex = DUPLEX_HALF; | |
986 | priv->phy_speed = ((mpc52xx_find_ipb_freq(op->node) >> 20) / 5) << 1; | |
987 | ||
988 | /* the 7-wire property means don't use MII mode */ | |
989 | if (of_find_property(op->node, "fsl,7-wire-mode", NULL)) | |
990 | priv->phy_addr = FEC5200_PHYADDR_7WIRE; | |
991 | ||
992 | /* The current speed preconfigures the speed of the MII link */ | |
993 | prop = of_get_property(op->node, "current-speed", &prop_size); | |
994 | if (prop && (prop_size >= sizeof(u32) * 2)) { | |
995 | priv->speed = prop[0]; | |
996 | priv->duplex = prop[1] ? DUPLEX_FULL : DUPLEX_HALF; | |
997 | } | |
5d031e9e | 998 | |
80791be1 GL |
999 | /* If there is a phy handle, setup link to that phy */ |
1000 | phy_handle = of_get_property(op->node, "phy-handle", &prop_size); | |
1001 | if (phy_handle && (prop_size >= sizeof(phandle))) { | |
1002 | phy_node = of_find_node_by_phandle(*phy_handle); | |
1003 | prop = of_get_property(phy_node, "reg", &prop_size); | |
1004 | if (prop && (prop_size >= sizeof(u32))) | |
1005 | if ((*prop >= 0) && (*prop < PHY_MAX_ADDR)) | |
1006 | priv->phy_addr = *prop; | |
1007 | of_node_put(phy_node); | |
5d031e9e DP |
1008 | } |
1009 | ||
1010 | /* Hardware init */ | |
1011 | mpc52xx_fec_hw_init(ndev); | |
1012 | ||
1013 | mpc52xx_fec_reset_stats(ndev); | |
1014 | ||
3d26e695 DW |
1015 | SET_NETDEV_DEV(ndev, &op->dev); |
1016 | ||
5d031e9e DP |
1017 | /* Register the new network device */ |
1018 | rv = register_netdev(ndev); | |
1019 | if (rv < 0) | |
1020 | goto probe_error; | |
1021 | ||
80791be1 GL |
1022 | /* Now report the link setup */ |
1023 | switch (priv->phy_addr) { | |
1024 | case FEC5200_PHYADDR_NONE: | |
1025 | dev_info(&ndev->dev, "Fixed speed MII link: %i%cD\n", | |
1026 | priv->speed, priv->duplex ? 'F' : 'H'); | |
1027 | break; | |
1028 | case FEC5200_PHYADDR_7WIRE: | |
1029 | dev_info(&ndev->dev, "using 7-wire PHY mode\n"); | |
1030 | break; | |
1031 | default: | |
1032 | dev_info(&ndev->dev, "Using PHY at MDIO address %i\n", | |
1033 | priv->phy_addr); | |
1034 | } | |
1035 | ||
5d031e9e DP |
1036 | /* We're done ! */ |
1037 | dev_set_drvdata(&op->dev, ndev); | |
1038 | ||
1039 | return 0; | |
1040 | ||
1041 | ||
1042 | /* Error handling - free everything that might be allocated */ | |
1043 | probe_error: | |
1044 | ||
1045 | irq_dispose_mapping(ndev->irq); | |
1046 | ||
1047 | if (priv->rx_dmatsk) | |
1048 | bcom_fec_rx_release(priv->rx_dmatsk); | |
1049 | if (priv->tx_dmatsk) | |
1050 | bcom_fec_tx_release(priv->tx_dmatsk); | |
1051 | ||
1052 | if (priv->fec) | |
1053 | iounmap(priv->fec); | |
1054 | ||
1055 | release_mem_region(mem.start, sizeof(struct mpc52xx_fec)); | |
1056 | ||
1057 | free_netdev(ndev); | |
1058 | ||
1059 | return rv; | |
1060 | } | |
1061 | ||
1062 | static int | |
1063 | mpc52xx_fec_remove(struct of_device *op) | |
1064 | { | |
1065 | struct net_device *ndev; | |
1066 | struct mpc52xx_fec_priv *priv; | |
1067 | ||
1068 | ndev = dev_get_drvdata(&op->dev); | |
1069 | priv = netdev_priv(ndev); | |
1070 | ||
1071 | unregister_netdev(ndev); | |
1072 | ||
1073 | irq_dispose_mapping(ndev->irq); | |
1074 | ||
1075 | bcom_fec_rx_release(priv->rx_dmatsk); | |
1076 | bcom_fec_tx_release(priv->tx_dmatsk); | |
1077 | ||
1078 | iounmap(priv->fec); | |
1079 | ||
1080 | release_mem_region(ndev->base_addr, sizeof(struct mpc52xx_fec)); | |
1081 | ||
1082 | free_netdev(ndev); | |
1083 | ||
1084 | dev_set_drvdata(&op->dev, NULL); | |
1085 | return 0; | |
1086 | } | |
1087 | ||
1088 | #ifdef CONFIG_PM | |
1089 | static int mpc52xx_fec_of_suspend(struct of_device *op, pm_message_t state) | |
1090 | { | |
1091 | struct net_device *dev = dev_get_drvdata(&op->dev); | |
1092 | ||
1093 | if (netif_running(dev)) | |
1094 | mpc52xx_fec_close(dev); | |
1095 | ||
1096 | return 0; | |
1097 | } | |
1098 | ||
1099 | static int mpc52xx_fec_of_resume(struct of_device *op) | |
1100 | { | |
1101 | struct net_device *dev = dev_get_drvdata(&op->dev); | |
1102 | ||
1103 | mpc52xx_fec_hw_init(dev); | |
1104 | mpc52xx_fec_reset_stats(dev); | |
1105 | ||
1106 | if (netif_running(dev)) | |
1107 | mpc52xx_fec_open(dev); | |
1108 | ||
1109 | return 0; | |
1110 | } | |
1111 | #endif | |
1112 | ||
1113 | static struct of_device_id mpc52xx_fec_match[] = { | |
8d813941 | 1114 | { .type = "network", .compatible = "fsl,mpc5200b-fec", }, |
66ffbe49 GL |
1115 | { .type = "network", .compatible = "fsl,mpc5200-fec", }, |
1116 | { .type = "network", .compatible = "mpc5200-fec", }, | |
5d031e9e DP |
1117 | { } |
1118 | }; | |
1119 | ||
1120 | MODULE_DEVICE_TABLE(of, mpc52xx_fec_match); | |
1121 | ||
1122 | static struct of_platform_driver mpc52xx_fec_driver = { | |
1123 | .owner = THIS_MODULE, | |
1124 | .name = DRIVER_NAME, | |
1125 | .match_table = mpc52xx_fec_match, | |
1126 | .probe = mpc52xx_fec_probe, | |
1127 | .remove = mpc52xx_fec_remove, | |
1128 | #ifdef CONFIG_PM | |
1129 | .suspend = mpc52xx_fec_of_suspend, | |
1130 | .resume = mpc52xx_fec_of_resume, | |
1131 | #endif | |
1132 | }; | |
1133 | ||
1134 | ||
1135 | /* ======================================================================== */ | |
1136 | /* Module */ | |
1137 | /* ======================================================================== */ | |
1138 | ||
1139 | static int __init | |
1140 | mpc52xx_fec_init(void) | |
1141 | { | |
1142 | #ifdef CONFIG_FEC_MPC52xx_MDIO | |
1143 | int ret; | |
1144 | ret = of_register_platform_driver(&mpc52xx_fec_mdio_driver); | |
1145 | if (ret) { | |
1146 | printk(KERN_ERR DRIVER_NAME ": failed to register mdio driver\n"); | |
1147 | return ret; | |
1148 | } | |
1149 | #endif | |
1150 | return of_register_platform_driver(&mpc52xx_fec_driver); | |
1151 | } | |
1152 | ||
1153 | static void __exit | |
1154 | mpc52xx_fec_exit(void) | |
1155 | { | |
1156 | of_unregister_platform_driver(&mpc52xx_fec_driver); | |
1157 | #ifdef CONFIG_FEC_MPC52xx_MDIO | |
1158 | of_unregister_platform_driver(&mpc52xx_fec_mdio_driver); | |
1159 | #endif | |
1160 | } | |
1161 | ||
1162 | ||
1163 | module_init(mpc52xx_fec_init); | |
1164 | module_exit(mpc52xx_fec_exit); | |
1165 | ||
1166 | MODULE_LICENSE("GPL"); | |
1167 | MODULE_AUTHOR("Dale Farnsworth"); | |
1168 | MODULE_DESCRIPTION("Ethernet driver for the Freescale MPC52xx FEC"); |