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); | |
461cadbc GL |
132 | dma_unmap_single(dev->dev.parent, bd->skb_pa, skb->len, |
133 | DMA_FROM_DEVICE); | |
5d031e9e DP |
134 | kfree_skb(skb); |
135 | } | |
136 | } | |
137 | ||
138 | static int mpc52xx_fec_alloc_rx_buffers(struct net_device *dev, struct bcom_task *rxtsk) | |
139 | { | |
140 | while (!bcom_queue_full(rxtsk)) { | |
141 | struct sk_buff *skb; | |
142 | struct bcom_fec_bd *bd; | |
143 | ||
144 | skb = dev_alloc_skb(FEC_RX_BUFFER_SIZE); | |
145 | if (skb == NULL) | |
146 | return -EAGAIN; | |
147 | ||
148 | /* zero out the initial receive buffers to aid debugging */ | |
149 | memset(skb->data, 0, FEC_RX_BUFFER_SIZE); | |
150 | ||
151 | bd = (struct bcom_fec_bd *)bcom_prepare_next_buffer(rxtsk); | |
152 | ||
153 | bd->status = FEC_RX_BUFFER_SIZE; | |
461cadbc | 154 | bd->skb_pa = dma_map_single(dev->dev.parent, skb->data, |
5d031e9e DP |
155 | FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE); |
156 | ||
157 | bcom_submit_next_buffer(rxtsk, skb); | |
158 | } | |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
163 | /* based on generic_adjust_link from fs_enet-main.c */ | |
164 | static void mpc52xx_fec_adjust_link(struct net_device *dev) | |
165 | { | |
166 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
167 | struct phy_device *phydev = priv->phydev; | |
168 | int new_state = 0; | |
169 | ||
170 | if (phydev->link != PHY_DOWN) { | |
171 | if (phydev->duplex != priv->duplex) { | |
172 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
173 | u32 rcntrl; | |
174 | u32 tcntrl; | |
175 | ||
176 | new_state = 1; | |
177 | priv->duplex = phydev->duplex; | |
178 | ||
179 | rcntrl = in_be32(&fec->r_cntrl); | |
180 | tcntrl = in_be32(&fec->x_cntrl); | |
181 | ||
182 | rcntrl &= ~FEC_RCNTRL_DRT; | |
183 | tcntrl &= ~FEC_TCNTRL_FDEN; | |
184 | if (phydev->duplex == DUPLEX_FULL) | |
185 | tcntrl |= FEC_TCNTRL_FDEN; /* FD enable */ | |
186 | else | |
187 | rcntrl |= FEC_RCNTRL_DRT; /* disable Rx on Tx (HD) */ | |
188 | ||
189 | out_be32(&fec->r_cntrl, rcntrl); | |
190 | out_be32(&fec->x_cntrl, tcntrl); | |
191 | } | |
192 | ||
193 | if (phydev->speed != priv->speed) { | |
194 | new_state = 1; | |
195 | priv->speed = phydev->speed; | |
196 | } | |
197 | ||
198 | if (priv->link == PHY_DOWN) { | |
199 | new_state = 1; | |
200 | priv->link = phydev->link; | |
5d031e9e DP |
201 | } |
202 | ||
203 | } else if (priv->link) { | |
204 | new_state = 1; | |
205 | priv->link = PHY_DOWN; | |
206 | priv->speed = 0; | |
207 | priv->duplex = -1; | |
5d031e9e DP |
208 | } |
209 | ||
210 | if (new_state && netif_msg_link(priv)) | |
211 | phy_print_status(phydev); | |
212 | } | |
213 | ||
214 | static int mpc52xx_fec_init_phy(struct net_device *dev) | |
215 | { | |
216 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
217 | struct phy_device *phydev; | |
218 | char phy_id[BUS_ID_SIZE]; | |
219 | ||
fb28ad35 | 220 | snprintf(phy_id, sizeof(phy_id), "%x:%02x", |
5d031e9e DP |
221 | (unsigned int)dev->base_addr, priv->phy_addr); |
222 | ||
223 | priv->link = PHY_DOWN; | |
224 | priv->speed = 0; | |
225 | priv->duplex = -1; | |
226 | ||
227 | phydev = phy_connect(dev, phy_id, &mpc52xx_fec_adjust_link, 0, PHY_INTERFACE_MODE_MII); | |
228 | if (IS_ERR(phydev)) { | |
229 | dev_err(&dev->dev, "phy_connect failed\n"); | |
230 | return PTR_ERR(phydev); | |
231 | } | |
232 | dev_info(&dev->dev, "attached phy %i to driver %s\n", | |
233 | phydev->addr, phydev->drv->name); | |
234 | ||
235 | priv->phydev = phydev; | |
236 | ||
237 | return 0; | |
238 | } | |
239 | ||
240 | static int mpc52xx_fec_phy_start(struct net_device *dev) | |
241 | { | |
242 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
243 | int err; | |
244 | ||
80791be1 | 245 | if (priv->phy_addr < 0) |
5d031e9e DP |
246 | return 0; |
247 | ||
248 | err = mpc52xx_fec_init_phy(dev); | |
249 | if (err) { | |
250 | dev_err(&dev->dev, "mpc52xx_fec_init_phy failed\n"); | |
251 | return err; | |
252 | } | |
253 | ||
254 | /* reset phy - this also wakes it from PDOWN */ | |
255 | phy_write(priv->phydev, MII_BMCR, BMCR_RESET); | |
256 | phy_start(priv->phydev); | |
257 | ||
258 | return 0; | |
259 | } | |
260 | ||
261 | static void mpc52xx_fec_phy_stop(struct net_device *dev) | |
262 | { | |
263 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
264 | ||
80791be1 | 265 | if (!priv->phydev) |
5d031e9e DP |
266 | return; |
267 | ||
268 | phy_disconnect(priv->phydev); | |
269 | /* power down phy */ | |
270 | phy_stop(priv->phydev); | |
271 | phy_write(priv->phydev, MII_BMCR, BMCR_PDOWN); | |
272 | } | |
273 | ||
5d031e9e DP |
274 | static void mpc52xx_fec_phy_hw_init(struct mpc52xx_fec_priv *priv) |
275 | { | |
276 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
277 | ||
80791be1 | 278 | if (priv->phydev) |
5d031e9e DP |
279 | return; |
280 | ||
281 | out_be32(&fec->mii_speed, priv->phy_speed); | |
282 | } | |
283 | ||
284 | static int mpc52xx_fec_open(struct net_device *dev) | |
285 | { | |
286 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
287 | int err = -EBUSY; | |
288 | ||
289 | if (request_irq(dev->irq, &mpc52xx_fec_interrupt, IRQF_SHARED, | |
290 | DRIVER_NAME "_ctrl", dev)) { | |
291 | dev_err(&dev->dev, "ctrl interrupt request failed\n"); | |
292 | goto out; | |
293 | } | |
294 | if (request_irq(priv->r_irq, &mpc52xx_fec_rx_interrupt, 0, | |
295 | DRIVER_NAME "_rx", dev)) { | |
296 | dev_err(&dev->dev, "rx interrupt request failed\n"); | |
297 | goto free_ctrl_irq; | |
298 | } | |
299 | if (request_irq(priv->t_irq, &mpc52xx_fec_tx_interrupt, 0, | |
300 | DRIVER_NAME "_tx", dev)) { | |
301 | dev_err(&dev->dev, "tx interrupt request failed\n"); | |
302 | goto free_2irqs; | |
303 | } | |
304 | ||
305 | bcom_fec_rx_reset(priv->rx_dmatsk); | |
306 | bcom_fec_tx_reset(priv->tx_dmatsk); | |
307 | ||
308 | err = mpc52xx_fec_alloc_rx_buffers(dev, priv->rx_dmatsk); | |
309 | if (err) { | |
310 | dev_err(&dev->dev, "mpc52xx_fec_alloc_rx_buffers failed\n"); | |
311 | goto free_irqs; | |
312 | } | |
313 | ||
314 | err = mpc52xx_fec_phy_start(dev); | |
315 | if (err) | |
316 | goto free_skbs; | |
317 | ||
318 | bcom_enable(priv->rx_dmatsk); | |
319 | bcom_enable(priv->tx_dmatsk); | |
320 | ||
321 | mpc52xx_fec_start(dev); | |
322 | ||
323 | netif_start_queue(dev); | |
324 | ||
325 | return 0; | |
326 | ||
327 | free_skbs: | |
328 | mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk); | |
329 | ||
330 | free_irqs: | |
331 | free_irq(priv->t_irq, dev); | |
332 | free_2irqs: | |
333 | free_irq(priv->r_irq, dev); | |
334 | free_ctrl_irq: | |
335 | free_irq(dev->irq, dev); | |
336 | out: | |
337 | ||
338 | return err; | |
339 | } | |
340 | ||
341 | static int mpc52xx_fec_close(struct net_device *dev) | |
342 | { | |
343 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
344 | ||
345 | netif_stop_queue(dev); | |
346 | ||
347 | mpc52xx_fec_stop(dev); | |
348 | ||
349 | mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk); | |
350 | ||
351 | free_irq(dev->irq, dev); | |
352 | free_irq(priv->r_irq, dev); | |
353 | free_irq(priv->t_irq, dev); | |
354 | ||
355 | mpc52xx_fec_phy_stop(dev); | |
356 | ||
357 | return 0; | |
358 | } | |
359 | ||
360 | /* This will only be invoked if your driver is _not_ in XOFF state. | |
361 | * What this means is that you need not check it, and that this | |
362 | * invariant will hold if you make sure that the netif_*_queue() | |
363 | * calls are done at the proper times. | |
364 | */ | |
d360009c | 365 | static int mpc52xx_fec_start_xmit(struct sk_buff *skb, struct net_device *dev) |
5d031e9e DP |
366 | { |
367 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
368 | struct bcom_fec_bd *bd; | |
369 | ||
370 | if (bcom_queue_full(priv->tx_dmatsk)) { | |
371 | if (net_ratelimit()) | |
372 | dev_err(&dev->dev, "transmit queue overrun\n"); | |
d360009c | 373 | return NETDEV_TX_BUSY; |
5d031e9e DP |
374 | } |
375 | ||
376 | spin_lock_irq(&priv->lock); | |
377 | dev->trans_start = jiffies; | |
378 | ||
379 | bd = (struct bcom_fec_bd *) | |
380 | bcom_prepare_next_buffer(priv->tx_dmatsk); | |
381 | ||
382 | bd->status = skb->len | BCOM_FEC_TX_BD_TFD | BCOM_FEC_TX_BD_TC; | |
461cadbc GL |
383 | bd->skb_pa = dma_map_single(dev->dev.parent, skb->data, skb->len, |
384 | DMA_TO_DEVICE); | |
5d031e9e DP |
385 | |
386 | bcom_submit_next_buffer(priv->tx_dmatsk, skb); | |
387 | ||
388 | if (bcom_queue_full(priv->tx_dmatsk)) { | |
389 | netif_stop_queue(dev); | |
390 | } | |
391 | ||
392 | spin_unlock_irq(&priv->lock); | |
393 | ||
d360009c | 394 | return NETDEV_TX_OK; |
5d031e9e DP |
395 | } |
396 | ||
bd28bdb1 JS |
397 | #ifdef CONFIG_NET_POLL_CONTROLLER |
398 | static void mpc52xx_fec_poll_controller(struct net_device *dev) | |
399 | { | |
400 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
401 | ||
402 | disable_irq(priv->t_irq); | |
403 | mpc52xx_fec_tx_interrupt(priv->t_irq, dev); | |
404 | enable_irq(priv->t_irq); | |
405 | disable_irq(priv->r_irq); | |
406 | mpc52xx_fec_rx_interrupt(priv->r_irq, dev); | |
407 | enable_irq(priv->r_irq); | |
408 | } | |
409 | #endif | |
410 | ||
411 | ||
5d031e9e DP |
412 | /* This handles BestComm transmit task interrupts |
413 | */ | |
414 | static irqreturn_t mpc52xx_fec_tx_interrupt(int irq, void *dev_id) | |
415 | { | |
416 | struct net_device *dev = dev_id; | |
417 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
418 | ||
419 | spin_lock(&priv->lock); | |
420 | ||
421 | while (bcom_buffer_done(priv->tx_dmatsk)) { | |
422 | struct sk_buff *skb; | |
423 | struct bcom_fec_bd *bd; | |
424 | skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL, | |
425 | (struct bcom_bd **)&bd); | |
461cadbc GL |
426 | dma_unmap_single(dev->dev.parent, bd->skb_pa, skb->len, |
427 | DMA_TO_DEVICE); | |
5d031e9e DP |
428 | |
429 | dev_kfree_skb_irq(skb); | |
430 | } | |
431 | ||
432 | netif_wake_queue(dev); | |
433 | ||
434 | spin_unlock(&priv->lock); | |
435 | ||
436 | return IRQ_HANDLED; | |
437 | } | |
438 | ||
439 | static irqreturn_t mpc52xx_fec_rx_interrupt(int irq, void *dev_id) | |
440 | { | |
441 | struct net_device *dev = dev_id; | |
442 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
443 | ||
444 | while (bcom_buffer_done(priv->rx_dmatsk)) { | |
445 | struct sk_buff *skb; | |
446 | struct sk_buff *rskb; | |
447 | struct bcom_fec_bd *bd; | |
448 | u32 status; | |
449 | ||
450 | rskb = bcom_retrieve_buffer(priv->rx_dmatsk, &status, | |
451 | (struct bcom_bd **)&bd); | |
461cadbc GL |
452 | dma_unmap_single(dev->dev.parent, bd->skb_pa, rskb->len, |
453 | DMA_FROM_DEVICE); | |
5d031e9e DP |
454 | |
455 | /* Test for errors in received frame */ | |
456 | if (status & BCOM_FEC_RX_BD_ERRORS) { | |
457 | /* Drop packet and reuse the buffer */ | |
458 | bd = (struct bcom_fec_bd *) | |
459 | bcom_prepare_next_buffer(priv->rx_dmatsk); | |
460 | ||
461 | bd->status = FEC_RX_BUFFER_SIZE; | |
461cadbc GL |
462 | bd->skb_pa = dma_map_single(dev->dev.parent, |
463 | rskb->data, | |
5d031e9e DP |
464 | FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE); |
465 | ||
466 | bcom_submit_next_buffer(priv->rx_dmatsk, rskb); | |
467 | ||
468 | dev->stats.rx_dropped++; | |
469 | ||
470 | continue; | |
471 | } | |
472 | ||
473 | /* skbs are allocated on open, so now we allocate a new one, | |
474 | * and remove the old (with the packet) */ | |
475 | skb = dev_alloc_skb(FEC_RX_BUFFER_SIZE); | |
476 | if (skb) { | |
477 | /* Process the received skb */ | |
478 | int length = status & BCOM_FEC_RX_BD_LEN_MASK; | |
479 | ||
480 | skb_put(rskb, length - 4); /* length without CRC32 */ | |
481 | ||
482 | rskb->dev = dev; | |
483 | rskb->protocol = eth_type_trans(rskb, dev); | |
484 | ||
485 | netif_rx(rskb); | |
5d031e9e DP |
486 | } else { |
487 | /* Can't get a new one : reuse the same & drop pkt */ | |
488 | dev_notice(&dev->dev, "Memory squeeze, dropping packet.\n"); | |
489 | dev->stats.rx_dropped++; | |
490 | ||
491 | skb = rskb; | |
492 | } | |
493 | ||
494 | bd = (struct bcom_fec_bd *) | |
495 | bcom_prepare_next_buffer(priv->rx_dmatsk); | |
496 | ||
497 | bd->status = FEC_RX_BUFFER_SIZE; | |
461cadbc | 498 | bd->skb_pa = dma_map_single(dev->dev.parent, skb->data, |
5d031e9e DP |
499 | FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE); |
500 | ||
501 | bcom_submit_next_buffer(priv->rx_dmatsk, skb); | |
502 | } | |
503 | ||
504 | return IRQ_HANDLED; | |
505 | } | |
506 | ||
507 | static irqreturn_t mpc52xx_fec_interrupt(int irq, void *dev_id) | |
508 | { | |
509 | struct net_device *dev = dev_id; | |
510 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
511 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
512 | u32 ievent; | |
513 | ||
514 | ievent = in_be32(&fec->ievent); | |
515 | ||
516 | ievent &= ~FEC_IEVENT_MII; /* mii is handled separately */ | |
517 | if (!ievent) | |
518 | return IRQ_NONE; | |
519 | ||
520 | out_be32(&fec->ievent, ievent); /* clear pending events */ | |
521 | ||
8f3ba2dc SH |
522 | /* on fifo error, soft-reset fec */ |
523 | if (ievent & (FEC_IEVENT_RFIFO_ERROR | FEC_IEVENT_XFIFO_ERROR)) { | |
524 | ||
525 | if (net_ratelimit() && (ievent & FEC_IEVENT_RFIFO_ERROR)) | |
526 | dev_warn(&dev->dev, "FEC_IEVENT_RFIFO_ERROR\n"); | |
527 | if (net_ratelimit() && (ievent & FEC_IEVENT_XFIFO_ERROR)) | |
528 | dev_warn(&dev->dev, "FEC_IEVENT_XFIFO_ERROR\n"); | |
529 | ||
530 | mpc52xx_fec_reset(dev); | |
531 | ||
532 | netif_wake_queue(dev); | |
5d031e9e DP |
533 | return IRQ_HANDLED; |
534 | } | |
535 | ||
8f3ba2dc SH |
536 | if (ievent & ~FEC_IEVENT_TFINT) |
537 | dev_dbg(&dev->dev, "ievent: %08x\n", ievent); | |
5d031e9e | 538 | |
5d031e9e DP |
539 | return IRQ_HANDLED; |
540 | } | |
541 | ||
542 | /* | |
543 | * Get the current statistics. | |
544 | * This may be called with the card open or closed. | |
545 | */ | |
546 | static struct net_device_stats *mpc52xx_fec_get_stats(struct net_device *dev) | |
547 | { | |
548 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
549 | struct net_device_stats *stats = &dev->stats; | |
550 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
551 | ||
552 | stats->rx_bytes = in_be32(&fec->rmon_r_octets); | |
553 | stats->rx_packets = in_be32(&fec->rmon_r_packets); | |
554 | stats->rx_errors = in_be32(&fec->rmon_r_crc_align) + | |
555 | in_be32(&fec->rmon_r_undersize) + | |
556 | in_be32(&fec->rmon_r_oversize) + | |
557 | in_be32(&fec->rmon_r_frag) + | |
558 | in_be32(&fec->rmon_r_jab); | |
559 | ||
560 | stats->tx_bytes = in_be32(&fec->rmon_t_octets); | |
561 | stats->tx_packets = in_be32(&fec->rmon_t_packets); | |
562 | stats->tx_errors = in_be32(&fec->rmon_t_crc_align) + | |
563 | in_be32(&fec->rmon_t_undersize) + | |
564 | in_be32(&fec->rmon_t_oversize) + | |
565 | in_be32(&fec->rmon_t_frag) + | |
566 | in_be32(&fec->rmon_t_jab); | |
567 | ||
568 | stats->multicast = in_be32(&fec->rmon_r_mc_pkt); | |
569 | stats->collisions = in_be32(&fec->rmon_t_col); | |
570 | ||
571 | /* detailed rx_errors: */ | |
572 | stats->rx_length_errors = in_be32(&fec->rmon_r_undersize) | |
573 | + in_be32(&fec->rmon_r_oversize) | |
574 | + in_be32(&fec->rmon_r_frag) | |
575 | + in_be32(&fec->rmon_r_jab); | |
576 | stats->rx_over_errors = in_be32(&fec->r_macerr); | |
577 | stats->rx_crc_errors = in_be32(&fec->ieee_r_crc); | |
578 | stats->rx_frame_errors = in_be32(&fec->ieee_r_align); | |
579 | stats->rx_fifo_errors = in_be32(&fec->rmon_r_drop); | |
580 | stats->rx_missed_errors = in_be32(&fec->rmon_r_drop); | |
581 | ||
582 | /* detailed tx_errors: */ | |
583 | stats->tx_aborted_errors = 0; | |
584 | stats->tx_carrier_errors = in_be32(&fec->ieee_t_cserr); | |
585 | stats->tx_fifo_errors = in_be32(&fec->rmon_t_drop); | |
586 | stats->tx_heartbeat_errors = in_be32(&fec->ieee_t_sqe); | |
587 | stats->tx_window_errors = in_be32(&fec->ieee_t_lcol); | |
588 | ||
589 | return stats; | |
590 | } | |
591 | ||
592 | /* | |
593 | * Read MIB counters in order to reset them, | |
594 | * then zero all the stats fields in memory | |
595 | */ | |
596 | static void mpc52xx_fec_reset_stats(struct net_device *dev) | |
597 | { | |
598 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
599 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
600 | ||
601 | out_be32(&fec->mib_control, FEC_MIB_DISABLE); | |
cc154ac6 AV |
602 | memset_io(&fec->rmon_t_drop, 0, |
603 | offsetof(struct mpc52xx_fec, reserved10) - | |
604 | offsetof(struct mpc52xx_fec, rmon_t_drop)); | |
5d031e9e DP |
605 | out_be32(&fec->mib_control, 0); |
606 | ||
607 | memset(&dev->stats, 0, sizeof(dev->stats)); | |
608 | } | |
609 | ||
610 | /* | |
611 | * Set or clear the multicast filter for this adaptor. | |
612 | */ | |
613 | static void mpc52xx_fec_set_multicast_list(struct net_device *dev) | |
614 | { | |
615 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
616 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
617 | u32 rx_control; | |
618 | ||
619 | rx_control = in_be32(&fec->r_cntrl); | |
620 | ||
621 | if (dev->flags & IFF_PROMISC) { | |
622 | rx_control |= FEC_RCNTRL_PROM; | |
623 | out_be32(&fec->r_cntrl, rx_control); | |
624 | } else { | |
625 | rx_control &= ~FEC_RCNTRL_PROM; | |
626 | out_be32(&fec->r_cntrl, rx_control); | |
627 | ||
628 | if (dev->flags & IFF_ALLMULTI) { | |
629 | out_be32(&fec->gaddr1, 0xffffffff); | |
630 | out_be32(&fec->gaddr2, 0xffffffff); | |
631 | } else { | |
632 | u32 crc; | |
633 | int i; | |
634 | struct dev_mc_list *dmi; | |
635 | u32 gaddr1 = 0x00000000; | |
636 | u32 gaddr2 = 0x00000000; | |
637 | ||
638 | dmi = dev->mc_list; | |
639 | for (i=0; i<dev->mc_count; i++) { | |
640 | crc = ether_crc_le(6, dmi->dmi_addr) >> 26; | |
641 | if (crc >= 32) | |
642 | gaddr1 |= 1 << (crc-32); | |
643 | else | |
644 | gaddr2 |= 1 << crc; | |
645 | dmi = dmi->next; | |
646 | } | |
647 | out_be32(&fec->gaddr1, gaddr1); | |
648 | out_be32(&fec->gaddr2, gaddr2); | |
649 | } | |
650 | } | |
651 | } | |
652 | ||
653 | /** | |
654 | * mpc52xx_fec_hw_init | |
655 | * @dev: network device | |
656 | * | |
657 | * Setup various hardware setting, only needed once on start | |
658 | */ | |
659 | static void mpc52xx_fec_hw_init(struct net_device *dev) | |
660 | { | |
661 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
662 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
663 | int i; | |
664 | ||
665 | /* Whack a reset. We should wait for this. */ | |
666 | out_be32(&fec->ecntrl, FEC_ECNTRL_RESET); | |
667 | for (i = 0; i < FEC_RESET_DELAY; ++i) { | |
668 | if ((in_be32(&fec->ecntrl) & FEC_ECNTRL_RESET) == 0) | |
669 | break; | |
670 | udelay(1); | |
671 | } | |
672 | if (i == FEC_RESET_DELAY) | |
673 | dev_err(&dev->dev, "FEC Reset timeout!\n"); | |
674 | ||
675 | /* set pause to 0x20 frames */ | |
676 | out_be32(&fec->op_pause, FEC_OP_PAUSE_OPCODE | 0x20); | |
677 | ||
678 | /* high service request will be deasserted when there's < 7 bytes in fifo | |
679 | * low service request will be deasserted when there's < 4*7 bytes in fifo | |
680 | */ | |
681 | out_be32(&fec->rfifo_cntrl, FEC_FIFO_CNTRL_FRAME | FEC_FIFO_CNTRL_LTG_7); | |
682 | out_be32(&fec->tfifo_cntrl, FEC_FIFO_CNTRL_FRAME | FEC_FIFO_CNTRL_LTG_7); | |
683 | ||
684 | /* alarm when <= x bytes in FIFO */ | |
685 | out_be32(&fec->rfifo_alarm, 0x0000030c); | |
686 | out_be32(&fec->tfifo_alarm, 0x00000100); | |
687 | ||
688 | /* begin transmittion when 256 bytes are in FIFO (or EOF or FIFO full) */ | |
689 | out_be32(&fec->x_wmrk, FEC_FIFO_WMRK_256B); | |
690 | ||
691 | /* enable crc generation */ | |
692 | out_be32(&fec->xmit_fsm, FEC_XMIT_FSM_APPEND_CRC | FEC_XMIT_FSM_ENABLE_CRC); | |
693 | out_be32(&fec->iaddr1, 0x00000000); /* No individual filter */ | |
694 | out_be32(&fec->iaddr2, 0x00000000); /* No individual filter */ | |
695 | ||
696 | /* set phy speed. | |
697 | * this can't be done in phy driver, since it needs to be called | |
698 | * before fec stuff (even on resume) */ | |
699 | mpc52xx_fec_phy_hw_init(priv); | |
700 | } | |
701 | ||
702 | /** | |
703 | * mpc52xx_fec_start | |
704 | * @dev: network device | |
705 | * | |
706 | * This function is called to start or restart the FEC during a link | |
707 | * change. This happens on fifo errors or when switching between half | |
708 | * and full duplex. | |
709 | */ | |
710 | static void mpc52xx_fec_start(struct net_device *dev) | |
711 | { | |
712 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
713 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
714 | u32 rcntrl; | |
715 | u32 tcntrl; | |
716 | u32 tmp; | |
717 | ||
718 | /* clear sticky error bits */ | |
719 | tmp = FEC_FIFO_STATUS_ERR | FEC_FIFO_STATUS_UF | FEC_FIFO_STATUS_OF; | |
720 | out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status) & tmp); | |
721 | out_be32(&fec->tfifo_status, in_be32(&fec->tfifo_status) & tmp); | |
722 | ||
723 | /* FIFOs will reset on mpc52xx_fec_enable */ | |
724 | out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_ENABLE_IS_RESET); | |
725 | ||
726 | /* Set station address. */ | |
727 | mpc52xx_fec_set_paddr(dev, dev->dev_addr); | |
728 | ||
729 | mpc52xx_fec_set_multicast_list(dev); | |
730 | ||
731 | /* set max frame len, enable flow control, select mii mode */ | |
732 | rcntrl = FEC_RX_BUFFER_SIZE << 16; /* max frame length */ | |
733 | rcntrl |= FEC_RCNTRL_FCE; | |
734 | ||
80791be1 | 735 | if (priv->phy_addr != FEC5200_PHYADDR_7WIRE) |
5d031e9e DP |
736 | rcntrl |= FEC_RCNTRL_MII_MODE; |
737 | ||
738 | if (priv->duplex == DUPLEX_FULL) | |
739 | tcntrl = FEC_TCNTRL_FDEN; /* FD enable */ | |
740 | else { | |
741 | rcntrl |= FEC_RCNTRL_DRT; /* disable Rx on Tx (HD) */ | |
742 | tcntrl = 0; | |
743 | } | |
744 | out_be32(&fec->r_cntrl, rcntrl); | |
745 | out_be32(&fec->x_cntrl, tcntrl); | |
746 | ||
747 | /* Clear any outstanding interrupt. */ | |
748 | out_be32(&fec->ievent, 0xffffffff); | |
749 | ||
750 | /* Enable interrupts we wish to service. */ | |
751 | out_be32(&fec->imask, FEC_IMASK_ENABLE); | |
752 | ||
753 | /* And last, enable the transmit and receive processing. */ | |
754 | out_be32(&fec->ecntrl, FEC_ECNTRL_ETHER_EN); | |
755 | out_be32(&fec->r_des_active, 0x01000000); | |
756 | } | |
757 | ||
758 | /** | |
759 | * mpc52xx_fec_stop | |
760 | * @dev: network device | |
761 | * | |
762 | * stop all activity on fec and empty dma buffers | |
763 | */ | |
764 | static void mpc52xx_fec_stop(struct net_device *dev) | |
765 | { | |
766 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
767 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
768 | unsigned long timeout; | |
769 | ||
770 | /* disable all interrupts */ | |
771 | out_be32(&fec->imask, 0); | |
772 | ||
773 | /* Disable the rx task. */ | |
774 | bcom_disable(priv->rx_dmatsk); | |
775 | ||
776 | /* Wait for tx queue to drain, but only if we're in process context */ | |
777 | if (!in_interrupt()) { | |
778 | timeout = jiffies + msecs_to_jiffies(2000); | |
779 | while (time_before(jiffies, timeout) && | |
780 | !bcom_queue_empty(priv->tx_dmatsk)) | |
781 | msleep(100); | |
782 | ||
783 | if (time_after_eq(jiffies, timeout)) | |
784 | dev_err(&dev->dev, "queues didn't drain\n"); | |
785 | #if 1 | |
786 | if (time_after_eq(jiffies, timeout)) { | |
787 | dev_err(&dev->dev, " tx: index: %i, outdex: %i\n", | |
788 | priv->tx_dmatsk->index, | |
789 | priv->tx_dmatsk->outdex); | |
790 | dev_err(&dev->dev, " rx: index: %i, outdex: %i\n", | |
791 | priv->rx_dmatsk->index, | |
792 | priv->rx_dmatsk->outdex); | |
793 | } | |
794 | #endif | |
795 | } | |
796 | ||
797 | bcom_disable(priv->tx_dmatsk); | |
798 | ||
799 | /* Stop FEC */ | |
800 | out_be32(&fec->ecntrl, in_be32(&fec->ecntrl) & ~FEC_ECNTRL_ETHER_EN); | |
801 | ||
802 | return; | |
803 | } | |
804 | ||
805 | /* reset fec and bestcomm tasks */ | |
806 | static void mpc52xx_fec_reset(struct net_device *dev) | |
807 | { | |
808 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
809 | struct mpc52xx_fec __iomem *fec = priv->fec; | |
810 | ||
811 | mpc52xx_fec_stop(dev); | |
812 | ||
813 | out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status)); | |
814 | out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_RESET_FIFO); | |
815 | ||
816 | mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk); | |
817 | ||
818 | mpc52xx_fec_hw_init(dev); | |
819 | ||
820 | phy_stop(priv->phydev); | |
821 | phy_write(priv->phydev, MII_BMCR, BMCR_RESET); | |
822 | phy_start(priv->phydev); | |
823 | ||
824 | bcom_fec_rx_reset(priv->rx_dmatsk); | |
825 | bcom_fec_tx_reset(priv->tx_dmatsk); | |
826 | ||
827 | mpc52xx_fec_alloc_rx_buffers(dev, priv->rx_dmatsk); | |
828 | ||
829 | bcom_enable(priv->rx_dmatsk); | |
830 | bcom_enable(priv->tx_dmatsk); | |
831 | ||
832 | mpc52xx_fec_start(dev); | |
833 | } | |
834 | ||
835 | ||
836 | /* ethtool interface */ | |
837 | static void mpc52xx_fec_get_drvinfo(struct net_device *dev, | |
838 | struct ethtool_drvinfo *info) | |
839 | { | |
840 | strcpy(info->driver, DRIVER_NAME); | |
841 | } | |
842 | ||
843 | static int mpc52xx_fec_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
844 | { | |
845 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
9404c82b GL |
846 | |
847 | if (!priv->phydev) | |
848 | return -ENODEV; | |
849 | ||
5d031e9e DP |
850 | return phy_ethtool_gset(priv->phydev, cmd); |
851 | } | |
852 | ||
853 | static int mpc52xx_fec_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
854 | { | |
855 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
9404c82b GL |
856 | |
857 | if (!priv->phydev) | |
858 | return -ENODEV; | |
859 | ||
5d031e9e DP |
860 | return phy_ethtool_sset(priv->phydev, cmd); |
861 | } | |
862 | ||
863 | static u32 mpc52xx_fec_get_msglevel(struct net_device *dev) | |
864 | { | |
865 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
866 | return priv->msg_enable; | |
867 | } | |
868 | ||
869 | static void mpc52xx_fec_set_msglevel(struct net_device *dev, u32 level) | |
870 | { | |
871 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
872 | priv->msg_enable = level; | |
873 | } | |
874 | ||
875 | static const struct ethtool_ops mpc52xx_fec_ethtool_ops = { | |
876 | .get_drvinfo = mpc52xx_fec_get_drvinfo, | |
877 | .get_settings = mpc52xx_fec_get_settings, | |
878 | .set_settings = mpc52xx_fec_set_settings, | |
879 | .get_link = ethtool_op_get_link, | |
880 | .get_msglevel = mpc52xx_fec_get_msglevel, | |
881 | .set_msglevel = mpc52xx_fec_set_msglevel, | |
882 | }; | |
883 | ||
884 | ||
885 | static int mpc52xx_fec_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
886 | { | |
887 | struct mpc52xx_fec_priv *priv = netdev_priv(dev); | |
888 | ||
9404c82b GL |
889 | if (!priv->phydev) |
890 | return -ENOTSUPP; | |
891 | ||
892 | return phy_mii_ioctl(priv->phydev, if_mii(rq), cmd); | |
5d031e9e DP |
893 | } |
894 | ||
d360009c HS |
895 | static const struct net_device_ops mpc52xx_fec_netdev_ops = { |
896 | .ndo_open = mpc52xx_fec_open, | |
897 | .ndo_stop = mpc52xx_fec_close, | |
898 | .ndo_start_xmit = mpc52xx_fec_start_xmit, | |
899 | .ndo_set_multicast_list = mpc52xx_fec_set_multicast_list, | |
900 | .ndo_set_mac_address = mpc52xx_fec_set_mac_address, | |
901 | .ndo_validate_addr = eth_validate_addr, | |
902 | .ndo_do_ioctl = mpc52xx_fec_ioctl, | |
903 | .ndo_change_mtu = eth_change_mtu, | |
904 | .ndo_tx_timeout = mpc52xx_fec_tx_timeout, | |
905 | .ndo_get_stats = mpc52xx_fec_get_stats, | |
906 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
907 | .ndo_poll_controller = mpc52xx_fec_poll_controller, | |
908 | #endif | |
909 | }; | |
910 | ||
5d031e9e DP |
911 | /* ======================================================================== */ |
912 | /* OF Driver */ | |
913 | /* ======================================================================== */ | |
914 | ||
915 | static int __devinit | |
916 | mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match) | |
917 | { | |
918 | int rv; | |
919 | struct net_device *ndev; | |
920 | struct mpc52xx_fec_priv *priv = NULL; | |
921 | struct resource mem; | |
80791be1 GL |
922 | struct device_node *phy_node; |
923 | const phandle *phy_handle; | |
924 | const u32 *prop; | |
925 | int prop_size; | |
5d031e9e DP |
926 | |
927 | phys_addr_t rx_fifo; | |
928 | phys_addr_t tx_fifo; | |
929 | ||
930 | /* Get the ether ndev & it's private zone */ | |
931 | ndev = alloc_etherdev(sizeof(struct mpc52xx_fec_priv)); | |
932 | if (!ndev) | |
933 | return -ENOMEM; | |
934 | ||
935 | priv = netdev_priv(ndev); | |
936 | ||
937 | /* Reserve FEC control zone */ | |
938 | rv = of_address_to_resource(op->node, 0, &mem); | |
939 | if (rv) { | |
940 | printk(KERN_ERR DRIVER_NAME ": " | |
941 | "Error while parsing device node resource\n" ); | |
942 | return rv; | |
943 | } | |
48d58459 | 944 | if ((mem.end - mem.start + 1) < sizeof(struct mpc52xx_fec)) { |
5d031e9e | 945 | printk(KERN_ERR DRIVER_NAME |
48d58459 | 946 | " - invalid resource size (%lx < %x), check mpc52xx_devices.c\n", |
5d031e9e DP |
947 | (unsigned long)(mem.end - mem.start + 1), sizeof(struct mpc52xx_fec)); |
948 | return -EINVAL; | |
949 | } | |
950 | ||
951 | if (!request_mem_region(mem.start, sizeof(struct mpc52xx_fec), DRIVER_NAME)) | |
952 | return -EBUSY; | |
953 | ||
954 | /* Init ether ndev with what we have */ | |
d360009c | 955 | ndev->netdev_ops = &mpc52xx_fec_netdev_ops; |
5d031e9e | 956 | ndev->ethtool_ops = &mpc52xx_fec_ethtool_ops; |
5d031e9e DP |
957 | ndev->watchdog_timeo = FEC_WATCHDOG_TIMEOUT; |
958 | ndev->base_addr = mem.start; | |
5d031e9e DP |
959 | |
960 | spin_lock_init(&priv->lock); | |
961 | ||
962 | /* ioremap the zones */ | |
963 | priv->fec = ioremap(mem.start, sizeof(struct mpc52xx_fec)); | |
964 | ||
965 | if (!priv->fec) { | |
966 | rv = -ENOMEM; | |
967 | goto probe_error; | |
968 | } | |
969 | ||
970 | /* Bestcomm init */ | |
971 | rx_fifo = ndev->base_addr + offsetof(struct mpc52xx_fec, rfifo_data); | |
972 | tx_fifo = ndev->base_addr + offsetof(struct mpc52xx_fec, tfifo_data); | |
973 | ||
974 | priv->rx_dmatsk = bcom_fec_rx_init(FEC_RX_NUM_BD, rx_fifo, FEC_RX_BUFFER_SIZE); | |
975 | priv->tx_dmatsk = bcom_fec_tx_init(FEC_TX_NUM_BD, tx_fifo); | |
976 | ||
977 | if (!priv->rx_dmatsk || !priv->tx_dmatsk) { | |
978 | printk(KERN_ERR DRIVER_NAME ": Can not init SDMA tasks\n" ); | |
979 | rv = -ENOMEM; | |
980 | goto probe_error; | |
981 | } | |
982 | ||
983 | /* Get the IRQ we need one by one */ | |
984 | /* Control */ | |
985 | ndev->irq = irq_of_parse_and_map(op->node, 0); | |
986 | ||
987 | /* RX */ | |
988 | priv->r_irq = bcom_get_task_irq(priv->rx_dmatsk); | |
989 | ||
990 | /* TX */ | |
991 | priv->t_irq = bcom_get_task_irq(priv->tx_dmatsk); | |
992 | ||
993 | /* MAC address init */ | |
994 | if (!is_zero_ether_addr(mpc52xx_fec_mac_addr)) | |
995 | memcpy(ndev->dev_addr, mpc52xx_fec_mac_addr, 6); | |
996 | else | |
997 | mpc52xx_fec_get_paddr(ndev, ndev->dev_addr); | |
998 | ||
999 | priv->msg_enable = netif_msg_init(debug, MPC52xx_MESSAGES_DEFAULT); | |
5d031e9e | 1000 | |
80791be1 GL |
1001 | /* |
1002 | * Link mode configuration | |
1003 | */ | |
5d031e9e | 1004 | |
80791be1 GL |
1005 | /* Start with safe defaults for link connection */ |
1006 | priv->phy_addr = FEC5200_PHYADDR_NONE; | |
1007 | priv->speed = 100; | |
1008 | priv->duplex = DUPLEX_HALF; | |
1009 | priv->phy_speed = ((mpc52xx_find_ipb_freq(op->node) >> 20) / 5) << 1; | |
1010 | ||
1011 | /* the 7-wire property means don't use MII mode */ | |
1012 | if (of_find_property(op->node, "fsl,7-wire-mode", NULL)) | |
1013 | priv->phy_addr = FEC5200_PHYADDR_7WIRE; | |
1014 | ||
1015 | /* The current speed preconfigures the speed of the MII link */ | |
1016 | prop = of_get_property(op->node, "current-speed", &prop_size); | |
1017 | if (prop && (prop_size >= sizeof(u32) * 2)) { | |
1018 | priv->speed = prop[0]; | |
1019 | priv->duplex = prop[1] ? DUPLEX_FULL : DUPLEX_HALF; | |
1020 | } | |
5d031e9e | 1021 | |
80791be1 GL |
1022 | /* If there is a phy handle, setup link to that phy */ |
1023 | phy_handle = of_get_property(op->node, "phy-handle", &prop_size); | |
1024 | if (phy_handle && (prop_size >= sizeof(phandle))) { | |
1025 | phy_node = of_find_node_by_phandle(*phy_handle); | |
1026 | prop = of_get_property(phy_node, "reg", &prop_size); | |
1027 | if (prop && (prop_size >= sizeof(u32))) | |
1028 | if ((*prop >= 0) && (*prop < PHY_MAX_ADDR)) | |
1029 | priv->phy_addr = *prop; | |
1030 | of_node_put(phy_node); | |
5d031e9e DP |
1031 | } |
1032 | ||
1033 | /* Hardware init */ | |
1034 | mpc52xx_fec_hw_init(ndev); | |
1035 | ||
1036 | mpc52xx_fec_reset_stats(ndev); | |
1037 | ||
3d26e695 DW |
1038 | SET_NETDEV_DEV(ndev, &op->dev); |
1039 | ||
5d031e9e DP |
1040 | /* Register the new network device */ |
1041 | rv = register_netdev(ndev); | |
1042 | if (rv < 0) | |
1043 | goto probe_error; | |
1044 | ||
80791be1 GL |
1045 | /* Now report the link setup */ |
1046 | switch (priv->phy_addr) { | |
1047 | case FEC5200_PHYADDR_NONE: | |
1048 | dev_info(&ndev->dev, "Fixed speed MII link: %i%cD\n", | |
1049 | priv->speed, priv->duplex ? 'F' : 'H'); | |
1050 | break; | |
1051 | case FEC5200_PHYADDR_7WIRE: | |
1052 | dev_info(&ndev->dev, "using 7-wire PHY mode\n"); | |
1053 | break; | |
1054 | default: | |
1055 | dev_info(&ndev->dev, "Using PHY at MDIO address %i\n", | |
1056 | priv->phy_addr); | |
1057 | } | |
1058 | ||
5d031e9e DP |
1059 | /* We're done ! */ |
1060 | dev_set_drvdata(&op->dev, ndev); | |
1061 | ||
1062 | return 0; | |
1063 | ||
1064 | ||
1065 | /* Error handling - free everything that might be allocated */ | |
1066 | probe_error: | |
1067 | ||
1068 | irq_dispose_mapping(ndev->irq); | |
1069 | ||
1070 | if (priv->rx_dmatsk) | |
1071 | bcom_fec_rx_release(priv->rx_dmatsk); | |
1072 | if (priv->tx_dmatsk) | |
1073 | bcom_fec_tx_release(priv->tx_dmatsk); | |
1074 | ||
1075 | if (priv->fec) | |
1076 | iounmap(priv->fec); | |
1077 | ||
1078 | release_mem_region(mem.start, sizeof(struct mpc52xx_fec)); | |
1079 | ||
1080 | free_netdev(ndev); | |
1081 | ||
1082 | return rv; | |
1083 | } | |
1084 | ||
1085 | static int | |
1086 | mpc52xx_fec_remove(struct of_device *op) | |
1087 | { | |
1088 | struct net_device *ndev; | |
1089 | struct mpc52xx_fec_priv *priv; | |
1090 | ||
1091 | ndev = dev_get_drvdata(&op->dev); | |
1092 | priv = netdev_priv(ndev); | |
1093 | ||
1094 | unregister_netdev(ndev); | |
1095 | ||
1096 | irq_dispose_mapping(ndev->irq); | |
1097 | ||
1098 | bcom_fec_rx_release(priv->rx_dmatsk); | |
1099 | bcom_fec_tx_release(priv->tx_dmatsk); | |
1100 | ||
1101 | iounmap(priv->fec); | |
1102 | ||
1103 | release_mem_region(ndev->base_addr, sizeof(struct mpc52xx_fec)); | |
1104 | ||
1105 | free_netdev(ndev); | |
1106 | ||
1107 | dev_set_drvdata(&op->dev, NULL); | |
1108 | return 0; | |
1109 | } | |
1110 | ||
1111 | #ifdef CONFIG_PM | |
1112 | static int mpc52xx_fec_of_suspend(struct of_device *op, pm_message_t state) | |
1113 | { | |
1114 | struct net_device *dev = dev_get_drvdata(&op->dev); | |
1115 | ||
1116 | if (netif_running(dev)) | |
1117 | mpc52xx_fec_close(dev); | |
1118 | ||
1119 | return 0; | |
1120 | } | |
1121 | ||
1122 | static int mpc52xx_fec_of_resume(struct of_device *op) | |
1123 | { | |
1124 | struct net_device *dev = dev_get_drvdata(&op->dev); | |
1125 | ||
1126 | mpc52xx_fec_hw_init(dev); | |
1127 | mpc52xx_fec_reset_stats(dev); | |
1128 | ||
1129 | if (netif_running(dev)) | |
1130 | mpc52xx_fec_open(dev); | |
1131 | ||
1132 | return 0; | |
1133 | } | |
1134 | #endif | |
1135 | ||
1136 | static struct of_device_id mpc52xx_fec_match[] = { | |
3b5ebf8e GL |
1137 | { .compatible = "fsl,mpc5200b-fec", }, |
1138 | { .compatible = "fsl,mpc5200-fec", }, | |
1139 | { .compatible = "mpc5200-fec", }, | |
5d031e9e DP |
1140 | { } |
1141 | }; | |
1142 | ||
1143 | MODULE_DEVICE_TABLE(of, mpc52xx_fec_match); | |
1144 | ||
1145 | static struct of_platform_driver mpc52xx_fec_driver = { | |
1146 | .owner = THIS_MODULE, | |
1147 | .name = DRIVER_NAME, | |
1148 | .match_table = mpc52xx_fec_match, | |
1149 | .probe = mpc52xx_fec_probe, | |
1150 | .remove = mpc52xx_fec_remove, | |
1151 | #ifdef CONFIG_PM | |
1152 | .suspend = mpc52xx_fec_of_suspend, | |
1153 | .resume = mpc52xx_fec_of_resume, | |
1154 | #endif | |
1155 | }; | |
1156 | ||
1157 | ||
1158 | /* ======================================================================== */ | |
1159 | /* Module */ | |
1160 | /* ======================================================================== */ | |
1161 | ||
1162 | static int __init | |
1163 | mpc52xx_fec_init(void) | |
1164 | { | |
1165 | #ifdef CONFIG_FEC_MPC52xx_MDIO | |
1166 | int ret; | |
1167 | ret = of_register_platform_driver(&mpc52xx_fec_mdio_driver); | |
1168 | if (ret) { | |
1169 | printk(KERN_ERR DRIVER_NAME ": failed to register mdio driver\n"); | |
1170 | return ret; | |
1171 | } | |
1172 | #endif | |
1173 | return of_register_platform_driver(&mpc52xx_fec_driver); | |
1174 | } | |
1175 | ||
1176 | static void __exit | |
1177 | mpc52xx_fec_exit(void) | |
1178 | { | |
1179 | of_unregister_platform_driver(&mpc52xx_fec_driver); | |
1180 | #ifdef CONFIG_FEC_MPC52xx_MDIO | |
1181 | of_unregister_platform_driver(&mpc52xx_fec_mdio_driver); | |
1182 | #endif | |
1183 | } | |
1184 | ||
1185 | ||
1186 | module_init(mpc52xx_fec_init); | |
1187 | module_exit(mpc52xx_fec_exit); | |
1188 | ||
1189 | MODULE_LICENSE("GPL"); | |
1190 | MODULE_AUTHOR("Dale Farnsworth"); | |
1191 | MODULE_DESCRIPTION("Ethernet driver for the Freescale MPC52xx FEC"); |