Commit | Line | Data |
---|---|---|
e190d6b1 | 1 | /* |
2fb9d6f5 | 2 | * Blackfin On-Chip MAC Driver |
e190d6b1 | 3 | * |
02460d08 | 4 | * Copyright 2004-2010 Analog Devices Inc. |
e190d6b1 | 5 | * |
2fb9d6f5 | 6 | * Enter bugs at http://blackfin.uclinux.org/ |
e190d6b1 | 7 | * |
2fb9d6f5 | 8 | * Licensed under the GPL-2 or later. |
e190d6b1 BW |
9 | */ |
10 | ||
c6dd5098 MF |
11 | #define DRV_VERSION "1.1" |
12 | #define DRV_DESC "Blackfin on-chip Ethernet MAC driver" | |
13 | ||
14 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
15 | ||
e190d6b1 BW |
16 | #include <linux/init.h> |
17 | #include <linux/module.h> | |
18 | #include <linux/kernel.h> | |
19 | #include <linux/sched.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/delay.h> | |
22 | #include <linux/timer.h> | |
23 | #include <linux/errno.h> | |
24 | #include <linux/irq.h> | |
25 | #include <linux/io.h> | |
26 | #include <linux/ioport.h> | |
27 | #include <linux/crc32.h> | |
28 | #include <linux/device.h> | |
29 | #include <linux/spinlock.h> | |
e190d6b1 | 30 | #include <linux/mii.h> |
e190d6b1 BW |
31 | #include <linux/netdevice.h> |
32 | #include <linux/etherdevice.h> | |
679dce39 | 33 | #include <linux/ethtool.h> |
e190d6b1 | 34 | #include <linux/skbuff.h> |
e190d6b1 | 35 | #include <linux/platform_device.h> |
e190d6b1 BW |
36 | |
37 | #include <asm/dma.h> | |
38 | #include <linux/dma-mapping.h> | |
39 | ||
fe92afed | 40 | #include <asm/div64.h> |
98f672ca | 41 | #include <asm/dpmc.h> |
e190d6b1 BW |
42 | #include <asm/blackfin.h> |
43 | #include <asm/cacheflush.h> | |
44 | #include <asm/portmux.h> | |
3dcc1e7f | 45 | #include <mach/pll.h> |
e190d6b1 BW |
46 | |
47 | #include "bfin_mac.h" | |
48 | ||
c6dd5098 | 49 | MODULE_AUTHOR("Bryan Wu, Luke Yang"); |
e190d6b1 BW |
50 | MODULE_LICENSE("GPL"); |
51 | MODULE_DESCRIPTION(DRV_DESC); | |
72abb461 | 52 | MODULE_ALIAS("platform:bfin_mac"); |
e190d6b1 BW |
53 | |
54 | #if defined(CONFIG_BFIN_MAC_USE_L1) | |
118133e6 SZ |
55 | # define bfin_mac_alloc(dma_handle, size, num) l1_data_sram_zalloc(size*num) |
56 | # define bfin_mac_free(dma_handle, ptr, num) l1_data_sram_free(ptr) | |
e190d6b1 | 57 | #else |
118133e6 SZ |
58 | # define bfin_mac_alloc(dma_handle, size, num) \ |
59 | dma_alloc_coherent(NULL, size*num, dma_handle, GFP_KERNEL) | |
60 | # define bfin_mac_free(dma_handle, ptr, num) \ | |
61 | dma_free_coherent(NULL, sizeof(*ptr)*num, ptr, dma_handle) | |
e190d6b1 BW |
62 | #endif |
63 | ||
64 | #define PKT_BUF_SZ 1580 | |
65 | ||
66 | #define MAX_TIMEOUT_CNT 500 | |
67 | ||
68 | /* pointers to maintain transmit list */ | |
69 | static struct net_dma_desc_tx *tx_list_head; | |
70 | static struct net_dma_desc_tx *tx_list_tail; | |
71 | static struct net_dma_desc_rx *rx_list_head; | |
72 | static struct net_dma_desc_rx *rx_list_tail; | |
73 | static struct net_dma_desc_rx *current_rx_ptr; | |
74 | static struct net_dma_desc_tx *current_tx_ptr; | |
75 | static struct net_dma_desc_tx *tx_desc; | |
76 | static struct net_dma_desc_rx *rx_desc; | |
77 | ||
78 | static void desc_list_free(void) | |
79 | { | |
80 | struct net_dma_desc_rx *r; | |
81 | struct net_dma_desc_tx *t; | |
82 | int i; | |
83 | #if !defined(CONFIG_BFIN_MAC_USE_L1) | |
84 | dma_addr_t dma_handle = 0; | |
85 | #endif | |
86 | ||
87 | if (tx_desc) { | |
88 | t = tx_list_head; | |
89 | for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) { | |
90 | if (t) { | |
91 | if (t->skb) { | |
92 | dev_kfree_skb(t->skb); | |
93 | t->skb = NULL; | |
94 | } | |
95 | t = t->next; | |
96 | } | |
97 | } | |
118133e6 | 98 | bfin_mac_free(dma_handle, tx_desc, CONFIG_BFIN_TX_DESC_NUM); |
e190d6b1 BW |
99 | } |
100 | ||
101 | if (rx_desc) { | |
102 | r = rx_list_head; | |
103 | for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) { | |
104 | if (r) { | |
105 | if (r->skb) { | |
106 | dev_kfree_skb(r->skb); | |
107 | r->skb = NULL; | |
108 | } | |
109 | r = r->next; | |
110 | } | |
111 | } | |
118133e6 | 112 | bfin_mac_free(dma_handle, rx_desc, CONFIG_BFIN_RX_DESC_NUM); |
e190d6b1 BW |
113 | } |
114 | } | |
115 | ||
1ab0d2ec | 116 | static int desc_list_init(struct net_device *dev) |
e190d6b1 BW |
117 | { |
118 | int i; | |
119 | struct sk_buff *new_skb; | |
120 | #if !defined(CONFIG_BFIN_MAC_USE_L1) | |
121 | /* | |
122 | * This dma_handle is useless in Blackfin dma_alloc_coherent(). | |
123 | * The real dma handler is the return value of dma_alloc_coherent(). | |
124 | */ | |
125 | dma_addr_t dma_handle; | |
126 | #endif | |
127 | ||
128 | tx_desc = bfin_mac_alloc(&dma_handle, | |
118133e6 | 129 | sizeof(struct net_dma_desc_tx), |
e190d6b1 BW |
130 | CONFIG_BFIN_TX_DESC_NUM); |
131 | if (tx_desc == NULL) | |
132 | goto init_error; | |
133 | ||
134 | rx_desc = bfin_mac_alloc(&dma_handle, | |
118133e6 | 135 | sizeof(struct net_dma_desc_rx), |
e190d6b1 BW |
136 | CONFIG_BFIN_RX_DESC_NUM); |
137 | if (rx_desc == NULL) | |
138 | goto init_error; | |
139 | ||
140 | /* init tx_list */ | |
141 | tx_list_head = tx_list_tail = tx_desc; | |
142 | ||
143 | for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) { | |
144 | struct net_dma_desc_tx *t = tx_desc + i; | |
145 | struct dma_descriptor *a = &(t->desc_a); | |
146 | struct dma_descriptor *b = &(t->desc_b); | |
147 | ||
148 | /* | |
149 | * disable DMA | |
150 | * read from memory WNR = 0 | |
151 | * wordsize is 32 bits | |
152 | * 6 half words is desc size | |
153 | * large desc flow | |
154 | */ | |
155 | a->config = WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE; | |
156 | a->start_addr = (unsigned long)t->packet; | |
157 | a->x_count = 0; | |
158 | a->next_dma_desc = b; | |
159 | ||
160 | /* | |
161 | * enabled DMA | |
162 | * write to memory WNR = 1 | |
163 | * wordsize is 32 bits | |
164 | * disable interrupt | |
165 | * 6 half words is desc size | |
166 | * large desc flow | |
167 | */ | |
168 | b->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE; | |
169 | b->start_addr = (unsigned long)(&(t->status)); | |
170 | b->x_count = 0; | |
171 | ||
172 | t->skb = NULL; | |
173 | tx_list_tail->desc_b.next_dma_desc = a; | |
174 | tx_list_tail->next = t; | |
175 | tx_list_tail = t; | |
176 | } | |
177 | tx_list_tail->next = tx_list_head; /* tx_list is a circle */ | |
178 | tx_list_tail->desc_b.next_dma_desc = &(tx_list_head->desc_a); | |
179 | current_tx_ptr = tx_list_head; | |
180 | ||
181 | /* init rx_list */ | |
182 | rx_list_head = rx_list_tail = rx_desc; | |
183 | ||
184 | for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) { | |
185 | struct net_dma_desc_rx *r = rx_desc + i; | |
186 | struct dma_descriptor *a = &(r->desc_a); | |
187 | struct dma_descriptor *b = &(r->desc_b); | |
188 | ||
189 | /* allocate a new skb for next time receive */ | |
1ab0d2ec | 190 | new_skb = netdev_alloc_skb(dev, PKT_BUF_SZ + NET_IP_ALIGN); |
720a43ef | 191 | if (!new_skb) |
e190d6b1 | 192 | goto init_error; |
720a43ef | 193 | |
015dac88 | 194 | skb_reserve(new_skb, NET_IP_ALIGN); |
f6e1e4f3 SZ |
195 | /* Invidate the data cache of skb->data range when it is write back |
196 | * cache. It will prevent overwritting the new data from DMA | |
197 | */ | |
198 | blackfin_dcache_invalidate_range((unsigned long)new_skb->head, | |
199 | (unsigned long)new_skb->end); | |
e190d6b1 BW |
200 | r->skb = new_skb; |
201 | ||
202 | /* | |
203 | * enabled DMA | |
204 | * write to memory WNR = 1 | |
205 | * wordsize is 32 bits | |
206 | * disable interrupt | |
207 | * 6 half words is desc size | |
208 | * large desc flow | |
209 | */ | |
210 | a->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE; | |
211 | /* since RXDWA is enabled */ | |
212 | a->start_addr = (unsigned long)new_skb->data - 2; | |
213 | a->x_count = 0; | |
214 | a->next_dma_desc = b; | |
215 | ||
216 | /* | |
217 | * enabled DMA | |
218 | * write to memory WNR = 1 | |
219 | * wordsize is 32 bits | |
220 | * enable interrupt | |
221 | * 6 half words is desc size | |
222 | * large desc flow | |
223 | */ | |
224 | b->config = DMAEN | WNR | WDSIZE_32 | DI_EN | | |
225 | NDSIZE_6 | DMAFLOW_LARGE; | |
226 | b->start_addr = (unsigned long)(&(r->status)); | |
227 | b->x_count = 0; | |
228 | ||
229 | rx_list_tail->desc_b.next_dma_desc = a; | |
230 | rx_list_tail->next = r; | |
231 | rx_list_tail = r; | |
232 | } | |
233 | rx_list_tail->next = rx_list_head; /* rx_list is a circle */ | |
234 | rx_list_tail->desc_b.next_dma_desc = &(rx_list_head->desc_a); | |
235 | current_rx_ptr = rx_list_head; | |
236 | ||
237 | return 0; | |
238 | ||
239 | init_error: | |
240 | desc_list_free(); | |
c6dd5098 | 241 | pr_err("kmalloc failed\n"); |
e190d6b1 BW |
242 | return -ENOMEM; |
243 | } | |
244 | ||
245 | ||
246 | /*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/ | |
247 | ||
4ae5a3ad BW |
248 | /* |
249 | * MII operations | |
250 | */ | |
e190d6b1 | 251 | /* Wait until the previous MDC/MDIO transaction has completed */ |
2bfa0f0c | 252 | static int bfin_mdio_poll(void) |
e190d6b1 BW |
253 | { |
254 | int timeout_cnt = MAX_TIMEOUT_CNT; | |
255 | ||
256 | /* poll the STABUSY bit */ | |
257 | while ((bfin_read_EMAC_STAADD()) & STABUSY) { | |
6db9e461 | 258 | udelay(1); |
e190d6b1 | 259 | if (timeout_cnt-- < 0) { |
c6dd5098 | 260 | pr_err("wait MDC/MDIO transaction to complete timeout\n"); |
2bfa0f0c | 261 | return -ETIMEDOUT; |
e190d6b1 BW |
262 | } |
263 | } | |
2bfa0f0c MF |
264 | |
265 | return 0; | |
e190d6b1 BW |
266 | } |
267 | ||
268 | /* Read an off-chip register in a PHY through the MDC/MDIO port */ | |
0ed0563e | 269 | static int bfin_mdiobus_read(struct mii_bus *bus, int phy_addr, int regnum) |
e190d6b1 | 270 | { |
2bfa0f0c MF |
271 | int ret; |
272 | ||
273 | ret = bfin_mdio_poll(); | |
274 | if (ret) | |
275 | return ret; | |
4ae5a3ad | 276 | |
e190d6b1 | 277 | /* read mode */ |
4ae5a3ad BW |
278 | bfin_write_EMAC_STAADD(SET_PHYAD((u16) phy_addr) | |
279 | SET_REGAD((u16) regnum) | | |
e190d6b1 | 280 | STABUSY); |
e190d6b1 | 281 | |
2bfa0f0c MF |
282 | ret = bfin_mdio_poll(); |
283 | if (ret) | |
284 | return ret; | |
4ae5a3ad BW |
285 | |
286 | return (int) bfin_read_EMAC_STADAT(); | |
e190d6b1 BW |
287 | } |
288 | ||
289 | /* Write an off-chip register in a PHY through the MDC/MDIO port */ | |
0ed0563e AB |
290 | static int bfin_mdiobus_write(struct mii_bus *bus, int phy_addr, int regnum, |
291 | u16 value) | |
e190d6b1 | 292 | { |
2bfa0f0c MF |
293 | int ret; |
294 | ||
295 | ret = bfin_mdio_poll(); | |
296 | if (ret) | |
297 | return ret; | |
4ae5a3ad BW |
298 | |
299 | bfin_write_EMAC_STADAT((u32) value); | |
e190d6b1 BW |
300 | |
301 | /* write mode */ | |
4ae5a3ad BW |
302 | bfin_write_EMAC_STAADD(SET_PHYAD((u16) phy_addr) | |
303 | SET_REGAD((u16) regnum) | | |
e190d6b1 BW |
304 | STAOP | |
305 | STABUSY); | |
306 | ||
2bfa0f0c | 307 | return bfin_mdio_poll(); |
e190d6b1 BW |
308 | } |
309 | ||
7ef0a7ee | 310 | static void bfin_mac_adjust_link(struct net_device *dev) |
e190d6b1 | 311 | { |
7ef0a7ee | 312 | struct bfin_mac_local *lp = netdev_priv(dev); |
4ae5a3ad BW |
313 | struct phy_device *phydev = lp->phydev; |
314 | unsigned long flags; | |
315 | int new_state = 0; | |
316 | ||
317 | spin_lock_irqsave(&lp->lock, flags); | |
318 | if (phydev->link) { | |
319 | /* Now we make sure that we can be in full duplex mode. | |
320 | * If not, we operate in half-duplex mode. */ | |
321 | if (phydev->duplex != lp->old_duplex) { | |
322 | u32 opmode = bfin_read_EMAC_OPMODE(); | |
323 | new_state = 1; | |
324 | ||
325 | if (phydev->duplex) | |
326 | opmode |= FDMODE; | |
327 | else | |
328 | opmode &= ~(FDMODE); | |
329 | ||
330 | bfin_write_EMAC_OPMODE(opmode); | |
331 | lp->old_duplex = phydev->duplex; | |
332 | } | |
e190d6b1 | 333 | |
4ae5a3ad | 334 | if (phydev->speed != lp->old_speed) { |
02460d08 SZ |
335 | if (phydev->interface == PHY_INTERFACE_MODE_RMII) { |
336 | u32 opmode = bfin_read_EMAC_OPMODE(); | |
337 | switch (phydev->speed) { | |
338 | case 10: | |
339 | opmode |= RMII_10; | |
340 | break; | |
341 | case 100: | |
342 | opmode &= ~RMII_10; | |
343 | break; | |
344 | default: | |
c6dd5098 MF |
345 | netdev_warn(dev, |
346 | "Ack! Speed (%d) is not 10/100!\n", | |
347 | phydev->speed); | |
02460d08 SZ |
348 | break; |
349 | } | |
350 | bfin_write_EMAC_OPMODE(opmode); | |
4ae5a3ad | 351 | } |
e190d6b1 | 352 | |
4ae5a3ad BW |
353 | new_state = 1; |
354 | lp->old_speed = phydev->speed; | |
355 | } | |
e190d6b1 | 356 | |
4ae5a3ad BW |
357 | if (!lp->old_link) { |
358 | new_state = 1; | |
359 | lp->old_link = 1; | |
4ae5a3ad BW |
360 | } |
361 | } else if (lp->old_link) { | |
362 | new_state = 1; | |
363 | lp->old_link = 0; | |
364 | lp->old_speed = 0; | |
365 | lp->old_duplex = -1; | |
e190d6b1 BW |
366 | } |
367 | ||
4ae5a3ad BW |
368 | if (new_state) { |
369 | u32 opmode = bfin_read_EMAC_OPMODE(); | |
370 | phy_print_status(phydev); | |
371 | pr_debug("EMAC_OPMODE = 0x%08x\n", opmode); | |
e190d6b1 | 372 | } |
4ae5a3ad BW |
373 | |
374 | spin_unlock_irqrestore(&lp->lock, flags); | |
e190d6b1 BW |
375 | } |
376 | ||
7cc8f381 BW |
377 | /* MDC = 2.5 MHz */ |
378 | #define MDC_CLK 2500000 | |
379 | ||
02460d08 | 380 | static int mii_probe(struct net_device *dev, int phy_mode) |
e190d6b1 | 381 | { |
7ef0a7ee | 382 | struct bfin_mac_local *lp = netdev_priv(dev); |
713d4024 | 383 | struct phy_device *phydev; |
4ae5a3ad | 384 | unsigned short sysctl; |
7cc8f381 | 385 | u32 sclk, mdc_div; |
e190d6b1 | 386 | |
4ae5a3ad | 387 | /* Enable PHY output early */ |
98f672ca MF |
388 | if (!(bfin_read_VR_CTL() & CLKBUFOE)) |
389 | bfin_write_VR_CTL(bfin_read_VR_CTL() | CLKBUFOE); | |
e190d6b1 | 390 | |
7cc8f381 BW |
391 | sclk = get_sclk(); |
392 | mdc_div = ((sclk / MDC_CLK) / 2) - 1; | |
393 | ||
4ae5a3ad | 394 | sysctl = bfin_read_EMAC_SYSCTL(); |
9dc7f30e | 395 | sysctl = (sysctl & ~MDCDIV) | SET_MDCDIV(mdc_div); |
e190d6b1 | 396 | bfin_write_EMAC_SYSCTL(sysctl); |
e190d6b1 | 397 | |
713d4024 | 398 | phydev = phy_find_first(lp->mii_bus); |
4ae5a3ad | 399 | if (!phydev) { |
c6dd5098 | 400 | netdev_err(dev, "no phy device found\n"); |
4ae5a3ad | 401 | return -ENODEV; |
e190d6b1 BW |
402 | } |
403 | ||
02460d08 SZ |
404 | if (phy_mode != PHY_INTERFACE_MODE_RMII && |
405 | phy_mode != PHY_INTERFACE_MODE_MII) { | |
c6dd5098 | 406 | netdev_err(dev, "invalid phy interface mode\n"); |
02460d08 SZ |
407 | return -EINVAL; |
408 | } | |
409 | ||
84eff6d1 | 410 | phydev = phy_connect(dev, phydev_name(phydev), |
f9a8f83b | 411 | &bfin_mac_adjust_link, phy_mode); |
e190d6b1 | 412 | |
4ae5a3ad | 413 | if (IS_ERR(phydev)) { |
c6dd5098 | 414 | netdev_err(dev, "could not attach PHY\n"); |
4ae5a3ad BW |
415 | return PTR_ERR(phydev); |
416 | } | |
417 | ||
418 | /* mask with MAC supported features */ | |
419 | phydev->supported &= (SUPPORTED_10baseT_Half | |
420 | | SUPPORTED_10baseT_Full | |
421 | | SUPPORTED_100baseT_Half | |
422 | | SUPPORTED_100baseT_Full | |
423 | | SUPPORTED_Autoneg | |
424 | | SUPPORTED_Pause | SUPPORTED_Asym_Pause | |
425 | | SUPPORTED_MII | |
426 | | SUPPORTED_TP); | |
427 | ||
428 | phydev->advertising = phydev->supported; | |
429 | ||
430 | lp->old_link = 0; | |
431 | lp->old_speed = 0; | |
432 | lp->old_duplex = -1; | |
433 | lp->phydev = phydev; | |
434 | ||
2220943a AL |
435 | phy_attached_print(phydev, "mdc_clk=%dHz(mdc_div=%d)@sclk=%dMHz)\n", |
436 | MDC_CLK, mdc_div, sclk / 1000000); | |
4ae5a3ad BW |
437 | |
438 | return 0; | |
439 | } | |
440 | ||
679dce39 BW |
441 | /* |
442 | * Ethtool support | |
443 | */ | |
444 | ||
53fd3f28 MH |
445 | /* |
446 | * interrupt routine for magic packet wakeup | |
447 | */ | |
448 | static irqreturn_t bfin_mac_wake_interrupt(int irq, void *dev_id) | |
449 | { | |
450 | return IRQ_HANDLED; | |
451 | } | |
452 | ||
679dce39 BW |
453 | static int |
454 | bfin_mac_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd) | |
455 | { | |
456 | struct bfin_mac_local *lp = netdev_priv(dev); | |
457 | ||
458 | if (lp->phydev) | |
459 | return phy_ethtool_gset(lp->phydev, cmd); | |
460 | ||
461 | return -EINVAL; | |
462 | } | |
463 | ||
464 | static int | |
465 | bfin_mac_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd) | |
466 | { | |
467 | struct bfin_mac_local *lp = netdev_priv(dev); | |
468 | ||
469 | if (!capable(CAP_NET_ADMIN)) | |
470 | return -EPERM; | |
471 | ||
472 | if (lp->phydev) | |
473 | return phy_ethtool_sset(lp->phydev, cmd); | |
474 | ||
475 | return -EINVAL; | |
476 | } | |
477 | ||
478 | static void bfin_mac_ethtool_getdrvinfo(struct net_device *dev, | |
479 | struct ethtool_drvinfo *info) | |
480 | { | |
7826d43f JP |
481 | strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); |
482 | strlcpy(info->version, DRV_VERSION, sizeof(info->version)); | |
483 | strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); | |
484 | strlcpy(info->bus_info, dev_name(&dev->dev), sizeof(info->bus_info)); | |
679dce39 BW |
485 | } |
486 | ||
53fd3f28 MH |
487 | static void bfin_mac_ethtool_getwol(struct net_device *dev, |
488 | struct ethtool_wolinfo *wolinfo) | |
489 | { | |
490 | struct bfin_mac_local *lp = netdev_priv(dev); | |
491 | ||
492 | wolinfo->supported = WAKE_MAGIC; | |
493 | wolinfo->wolopts = lp->wol; | |
494 | } | |
495 | ||
496 | static int bfin_mac_ethtool_setwol(struct net_device *dev, | |
497 | struct ethtool_wolinfo *wolinfo) | |
498 | { | |
499 | struct bfin_mac_local *lp = netdev_priv(dev); | |
500 | int rc; | |
501 | ||
502 | if (wolinfo->wolopts & (WAKE_MAGICSECURE | | |
503 | WAKE_UCAST | | |
504 | WAKE_MCAST | | |
505 | WAKE_BCAST | | |
506 | WAKE_ARP)) | |
507 | return -EOPNOTSUPP; | |
508 | ||
509 | lp->wol = wolinfo->wolopts; | |
510 | ||
511 | if (lp->wol && !lp->irq_wake_requested) { | |
512 | /* register wake irq handler */ | |
513 | rc = request_irq(IRQ_MAC_WAKEDET, bfin_mac_wake_interrupt, | |
63aca0f7 | 514 | 0, "EMAC_WAKE", dev); |
53fd3f28 MH |
515 | if (rc) |
516 | return rc; | |
517 | lp->irq_wake_requested = true; | |
518 | } | |
519 | ||
520 | if (!lp->wol && lp->irq_wake_requested) { | |
521 | free_irq(IRQ_MAC_WAKEDET, dev); | |
522 | lp->irq_wake_requested = false; | |
523 | } | |
524 | ||
525 | /* Make sure the PHY driver doesn't suspend */ | |
526 | device_init_wakeup(&dev->dev, lp->wol); | |
527 | ||
528 | return 0; | |
529 | } | |
530 | ||
85c153d2 | 531 | #ifdef CONFIG_BFIN_MAC_USE_HWSTAMP |
a85bbddd | 532 | static int bfin_mac_ethtool_get_ts_info(struct net_device *dev, |
3ffa4290 | 533 | struct ethtool_ts_info *info) |
a85bbddd | 534 | { |
dd87b22f RC |
535 | struct bfin_mac_local *lp = netdev_priv(dev); |
536 | ||
a85bbddd RC |
537 | info->so_timestamping = |
538 | SOF_TIMESTAMPING_TX_HARDWARE | | |
539 | SOF_TIMESTAMPING_RX_HARDWARE | | |
bc3c5f63 | 540 | SOF_TIMESTAMPING_RAW_HARDWARE; |
dd87b22f | 541 | info->phc_index = lp->phc_index; |
a85bbddd RC |
542 | info->tx_types = |
543 | (1 << HWTSTAMP_TX_OFF) | | |
544 | (1 << HWTSTAMP_TX_ON); | |
545 | info->rx_filters = | |
546 | (1 << HWTSTAMP_FILTER_NONE) | | |
547 | (1 << HWTSTAMP_FILTER_PTP_V1_L4_EVENT) | | |
548 | (1 << HWTSTAMP_FILTER_PTP_V2_L2_EVENT) | | |
549 | (1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT); | |
550 | return 0; | |
551 | } | |
85c153d2 | 552 | #endif |
a85bbddd | 553 | |
0fc0b732 | 554 | static const struct ethtool_ops bfin_mac_ethtool_ops = { |
679dce39 BW |
555 | .get_settings = bfin_mac_ethtool_getsettings, |
556 | .set_settings = bfin_mac_ethtool_setsettings, | |
557 | .get_link = ethtool_op_get_link, | |
558 | .get_drvinfo = bfin_mac_ethtool_getdrvinfo, | |
53fd3f28 MH |
559 | .get_wol = bfin_mac_ethtool_getwol, |
560 | .set_wol = bfin_mac_ethtool_setwol, | |
85c153d2 | 561 | #ifdef CONFIG_BFIN_MAC_USE_HWSTAMP |
a85bbddd | 562 | .get_ts_info = bfin_mac_ethtool_get_ts_info, |
85c153d2 | 563 | #endif |
679dce39 BW |
564 | }; |
565 | ||
4ae5a3ad | 566 | /**************************************************************************/ |
5ca1bb5a | 567 | static void setup_system_regs(struct net_device *dev) |
4ae5a3ad | 568 | { |
02460d08 SZ |
569 | struct bfin_mac_local *lp = netdev_priv(dev); |
570 | int i; | |
4ae5a3ad BW |
571 | unsigned short sysctl; |
572 | ||
573 | /* | |
574 | * Odd word alignment for Receive Frame DMA word | |
575 | * Configure checksum support and rcve frame word alignment | |
576 | */ | |
577 | sysctl = bfin_read_EMAC_SYSCTL(); | |
02460d08 SZ |
578 | /* |
579 | * check if interrupt is requested for any PHY, | |
580 | * enable PHY interrupt only if needed | |
581 | */ | |
582 | for (i = 0; i < PHY_MAX_ADDR; ++i) | |
583 | if (lp->mii_bus->irq[i] != PHY_POLL) | |
584 | break; | |
585 | if (i < PHY_MAX_ADDR) | |
586 | sysctl |= PHYIE; | |
812a9de7 | 587 | sysctl |= RXDWA; |
4ae5a3ad | 588 | #if defined(BFIN_MAC_CSUM_OFFLOAD) |
812a9de7 | 589 | sysctl |= RXCKS; |
4ae5a3ad | 590 | #else |
812a9de7 | 591 | sysctl &= ~RXCKS; |
4ae5a3ad BW |
592 | #endif |
593 | bfin_write_EMAC_SYSCTL(sysctl); | |
e190d6b1 BW |
594 | |
595 | bfin_write_EMAC_MMC_CTL(RSTC | CROLL); | |
596 | ||
c599bd6b MF |
597 | /* Set vlan regs to let 1522 bytes long packets pass through */ |
598 | bfin_write_EMAC_VLAN1(lp->vlan1_mask); | |
599 | bfin_write_EMAC_VLAN2(lp->vlan2_mask); | |
600 | ||
e190d6b1 BW |
601 | /* Initialize the TX DMA channel registers */ |
602 | bfin_write_DMA2_X_COUNT(0); | |
603 | bfin_write_DMA2_X_MODIFY(4); | |
604 | bfin_write_DMA2_Y_COUNT(0); | |
605 | bfin_write_DMA2_Y_MODIFY(0); | |
606 | ||
607 | /* Initialize the RX DMA channel registers */ | |
608 | bfin_write_DMA1_X_COUNT(0); | |
609 | bfin_write_DMA1_X_MODIFY(4); | |
610 | bfin_write_DMA1_Y_COUNT(0); | |
611 | bfin_write_DMA1_Y_MODIFY(0); | |
612 | } | |
613 | ||
73f83182 | 614 | static void setup_mac_addr(u8 *mac_addr) |
e190d6b1 BW |
615 | { |
616 | u32 addr_low = le32_to_cpu(*(__le32 *) & mac_addr[0]); | |
617 | u16 addr_hi = le16_to_cpu(*(__le16 *) & mac_addr[4]); | |
618 | ||
619 | /* this depends on a little-endian machine */ | |
620 | bfin_write_EMAC_ADDRLO(addr_low); | |
621 | bfin_write_EMAC_ADDRHI(addr_hi); | |
622 | } | |
623 | ||
7ef0a7ee | 624 | static int bfin_mac_set_mac_address(struct net_device *dev, void *p) |
73f83182 AL |
625 | { |
626 | struct sockaddr *addr = p; | |
627 | if (netif_running(dev)) | |
628 | return -EBUSY; | |
629 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
630 | setup_mac_addr(dev->dev_addr); | |
631 | return 0; | |
632 | } | |
633 | ||
fe92afed BS |
634 | #ifdef CONFIG_BFIN_MAC_USE_HWSTAMP |
635 | #define bfin_mac_hwtstamp_is_none(cfg) ((cfg) == HWTSTAMP_FILTER_NONE) | |
636 | ||
bc3c5f63 RC |
637 | static u32 bfin_select_phc_clock(u32 input_clk, unsigned int *shift_result) |
638 | { | |
639 | u32 ipn = 1000000000UL / input_clk; | |
640 | u32 ppn = 1; | |
641 | unsigned int shift = 0; | |
642 | ||
643 | while (ppn <= ipn) { | |
644 | ppn <<= 1; | |
645 | shift++; | |
646 | } | |
647 | *shift_result = shift; | |
648 | return 1000000000UL / ppn; | |
649 | } | |
650 | ||
7575c917 BH |
651 | static int bfin_mac_hwtstamp_set(struct net_device *netdev, |
652 | struct ifreq *ifr) | |
fe92afed BS |
653 | { |
654 | struct hwtstamp_config config; | |
655 | struct bfin_mac_local *lp = netdev_priv(netdev); | |
656 | u16 ptpctl; | |
657 | u32 ptpfv1, ptpfv2, ptpfv3, ptpfoff; | |
658 | ||
659 | if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) | |
660 | return -EFAULT; | |
661 | ||
662 | pr_debug("%s config flag:0x%x, tx_type:0x%x, rx_filter:0x%x\n", | |
663 | __func__, config.flags, config.tx_type, config.rx_filter); | |
664 | ||
665 | /* reserved for future extensions */ | |
666 | if (config.flags) | |
667 | return -EINVAL; | |
668 | ||
669 | if ((config.tx_type != HWTSTAMP_TX_OFF) && | |
670 | (config.tx_type != HWTSTAMP_TX_ON)) | |
671 | return -ERANGE; | |
672 | ||
673 | ptpctl = bfin_read_EMAC_PTP_CTL(); | |
674 | ||
675 | switch (config.rx_filter) { | |
676 | case HWTSTAMP_FILTER_NONE: | |
677 | /* | |
678 | * Dont allow any timestamping | |
679 | */ | |
680 | ptpfv3 = 0xFFFFFFFF; | |
681 | bfin_write_EMAC_PTP_FV3(ptpfv3); | |
682 | break; | |
683 | case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: | |
684 | case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: | |
685 | case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: | |
686 | /* | |
687 | * Clear the five comparison mask bits (bits[12:8]) in EMAC_PTP_CTL) | |
688 | * to enable all the field matches. | |
689 | */ | |
690 | ptpctl &= ~0x1F00; | |
691 | bfin_write_EMAC_PTP_CTL(ptpctl); | |
692 | /* | |
693 | * Keep the default values of the EMAC_PTP_FOFF register. | |
694 | */ | |
695 | ptpfoff = 0x4A24170C; | |
696 | bfin_write_EMAC_PTP_FOFF(ptpfoff); | |
697 | /* | |
698 | * Keep the default values of the EMAC_PTP_FV1 and EMAC_PTP_FV2 | |
699 | * registers. | |
700 | */ | |
701 | ptpfv1 = 0x11040800; | |
702 | bfin_write_EMAC_PTP_FV1(ptpfv1); | |
703 | ptpfv2 = 0x0140013F; | |
704 | bfin_write_EMAC_PTP_FV2(ptpfv2); | |
705 | /* | |
706 | * The default value (0xFFFC) allows the timestamping of both | |
707 | * received Sync messages and Delay_Req messages. | |
708 | */ | |
709 | ptpfv3 = 0xFFFFFFFC; | |
710 | bfin_write_EMAC_PTP_FV3(ptpfv3); | |
711 | ||
712 | config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT; | |
713 | break; | |
714 | case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: | |
715 | case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: | |
716 | case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: | |
717 | /* Clear all five comparison mask bits (bits[12:8]) in the | |
718 | * EMAC_PTP_CTL register to enable all the field matches. | |
719 | */ | |
720 | ptpctl &= ~0x1F00; | |
721 | bfin_write_EMAC_PTP_CTL(ptpctl); | |
722 | /* | |
723 | * Keep the default values of the EMAC_PTP_FOFF register, except set | |
724 | * the PTPCOF field to 0x2A. | |
725 | */ | |
726 | ptpfoff = 0x2A24170C; | |
727 | bfin_write_EMAC_PTP_FOFF(ptpfoff); | |
728 | /* | |
729 | * Keep the default values of the EMAC_PTP_FV1 and EMAC_PTP_FV2 | |
730 | * registers. | |
731 | */ | |
732 | ptpfv1 = 0x11040800; | |
733 | bfin_write_EMAC_PTP_FV1(ptpfv1); | |
734 | ptpfv2 = 0x0140013F; | |
735 | bfin_write_EMAC_PTP_FV2(ptpfv2); | |
736 | /* | |
737 | * To allow the timestamping of Pdelay_Req and Pdelay_Resp, set | |
738 | * the value to 0xFFF0. | |
739 | */ | |
740 | ptpfv3 = 0xFFFFFFF0; | |
741 | bfin_write_EMAC_PTP_FV3(ptpfv3); | |
742 | ||
743 | config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT; | |
744 | break; | |
745 | case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: | |
746 | case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: | |
747 | case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: | |
748 | /* | |
749 | * Clear bits 8 and 12 of the EMAC_PTP_CTL register to enable only the | |
750 | * EFTM and PTPCM field comparison. | |
751 | */ | |
752 | ptpctl &= ~0x1100; | |
753 | bfin_write_EMAC_PTP_CTL(ptpctl); | |
754 | /* | |
755 | * Keep the default values of all the fields of the EMAC_PTP_FOFF | |
756 | * register, except set the PTPCOF field to 0x0E. | |
757 | */ | |
758 | ptpfoff = 0x0E24170C; | |
759 | bfin_write_EMAC_PTP_FOFF(ptpfoff); | |
760 | /* | |
761 | * Program bits [15:0] of the EMAC_PTP_FV1 register to 0x88F7, which | |
762 | * corresponds to PTP messages on the MAC layer. | |
763 | */ | |
764 | ptpfv1 = 0x110488F7; | |
765 | bfin_write_EMAC_PTP_FV1(ptpfv1); | |
766 | ptpfv2 = 0x0140013F; | |
767 | bfin_write_EMAC_PTP_FV2(ptpfv2); | |
768 | /* | |
769 | * To allow the timestamping of Pdelay_Req and Pdelay_Resp | |
770 | * messages, set the value to 0xFFF0. | |
771 | */ | |
772 | ptpfv3 = 0xFFFFFFF0; | |
773 | bfin_write_EMAC_PTP_FV3(ptpfv3); | |
774 | ||
775 | config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT; | |
776 | break; | |
777 | default: | |
778 | return -ERANGE; | |
779 | } | |
780 | ||
781 | if (config.tx_type == HWTSTAMP_TX_OFF && | |
782 | bfin_mac_hwtstamp_is_none(config.rx_filter)) { | |
783 | ptpctl &= ~PTP_EN; | |
784 | bfin_write_EMAC_PTP_CTL(ptpctl); | |
785 | ||
786 | SSYNC(); | |
787 | } else { | |
788 | ptpctl |= PTP_EN; | |
789 | bfin_write_EMAC_PTP_CTL(ptpctl); | |
790 | ||
791 | /* | |
792 | * clear any existing timestamp | |
793 | */ | |
794 | bfin_read_EMAC_PTP_RXSNAPLO(); | |
795 | bfin_read_EMAC_PTP_RXSNAPHI(); | |
796 | ||
797 | bfin_read_EMAC_PTP_TXSNAPLO(); | |
798 | bfin_read_EMAC_PTP_TXSNAPHI(); | |
799 | ||
fe92afed | 800 | SSYNC(); |
fe92afed BS |
801 | } |
802 | ||
803 | lp->stamp_cfg = config; | |
804 | return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? | |
805 | -EFAULT : 0; | |
806 | } | |
807 | ||
7575c917 BH |
808 | static int bfin_mac_hwtstamp_get(struct net_device *netdev, |
809 | struct ifreq *ifr) | |
810 | { | |
811 | struct bfin_mac_local *lp = netdev_priv(netdev); | |
812 | ||
813 | return copy_to_user(ifr->ifr_data, &lp->stamp_cfg, | |
814 | sizeof(lp->stamp_cfg)) ? | |
815 | -EFAULT : 0; | |
816 | } | |
817 | ||
fe92afed BS |
818 | static void bfin_tx_hwtstamp(struct net_device *netdev, struct sk_buff *skb) |
819 | { | |
820 | struct bfin_mac_local *lp = netdev_priv(netdev); | |
fe92afed | 821 | |
2244d07b | 822 | if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) { |
fe92afed BS |
823 | int timeout_cnt = MAX_TIMEOUT_CNT; |
824 | ||
825 | /* When doing time stamping, keep the connection to the socket | |
826 | * a while longer | |
827 | */ | |
2244d07b | 828 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
fe92afed BS |
829 | |
830 | /* | |
831 | * The timestamping is done at the EMAC module's MII/RMII interface | |
832 | * when the module sees the Start of Frame of an event message packet. This | |
833 | * interface is the closest possible place to the physical Ethernet transmission | |
834 | * medium, providing the best timing accuracy. | |
835 | */ | |
836 | while ((!(bfin_read_EMAC_PTP_ISTAT() & TXTL)) && (--timeout_cnt)) | |
837 | udelay(1); | |
838 | if (timeout_cnt == 0) | |
c6dd5098 | 839 | netdev_err(netdev, "timestamp the TX packet failed\n"); |
fe92afed BS |
840 | else { |
841 | struct skb_shared_hwtstamps shhwtstamps; | |
842 | u64 ns; | |
843 | u64 regval; | |
844 | ||
845 | regval = bfin_read_EMAC_PTP_TXSNAPLO(); | |
846 | regval |= (u64)bfin_read_EMAC_PTP_TXSNAPHI() << 32; | |
847 | memset(&shhwtstamps, 0, sizeof(shhwtstamps)); | |
bc3c5f63 | 848 | ns = regval << lp->shift; |
fe92afed | 849 | shhwtstamps.hwtstamp = ns_to_ktime(ns); |
fe92afed | 850 | skb_tstamp_tx(skb, &shhwtstamps); |
fe92afed BS |
851 | } |
852 | } | |
853 | } | |
854 | ||
855 | static void bfin_rx_hwtstamp(struct net_device *netdev, struct sk_buff *skb) | |
856 | { | |
857 | struct bfin_mac_local *lp = netdev_priv(netdev); | |
858 | u32 valid; | |
859 | u64 regval, ns; | |
860 | struct skb_shared_hwtstamps *shhwtstamps; | |
861 | ||
862 | if (bfin_mac_hwtstamp_is_none(lp->stamp_cfg.rx_filter)) | |
863 | return; | |
864 | ||
865 | valid = bfin_read_EMAC_PTP_ISTAT() & RXEL; | |
866 | if (!valid) | |
867 | return; | |
868 | ||
869 | shhwtstamps = skb_hwtstamps(skb); | |
870 | ||
871 | regval = bfin_read_EMAC_PTP_RXSNAPLO(); | |
872 | regval |= (u64)bfin_read_EMAC_PTP_RXSNAPHI() << 32; | |
bc3c5f63 | 873 | ns = regval << lp->shift; |
fe92afed BS |
874 | memset(shhwtstamps, 0, sizeof(*shhwtstamps)); |
875 | shhwtstamps->hwtstamp = ns_to_ktime(ns); | |
fe92afed BS |
876 | } |
877 | ||
fe92afed BS |
878 | static void bfin_mac_hwtstamp_init(struct net_device *netdev) |
879 | { | |
880 | struct bfin_mac_local *lp = netdev_priv(netdev); | |
dd87b22f | 881 | u64 addend, ppb; |
bc3c5f63 | 882 | u32 input_clk, phc_clk; |
fe92afed BS |
883 | |
884 | /* Initialize hardware timer */ | |
bc3c5f63 RC |
885 | input_clk = get_sclk(); |
886 | phc_clk = bfin_select_phc_clock(input_clk, &lp->shift); | |
887 | addend = phc_clk * (1ULL << 32); | |
888 | do_div(addend, input_clk); | |
889 | bfin_write_EMAC_PTP_ADDEND((u32)addend); | |
890 | ||
891 | lp->addend = addend; | |
dd87b22f RC |
892 | ppb = 1000000000ULL * input_clk; |
893 | do_div(ppb, phc_clk); | |
894 | lp->max_ppb = ppb - 1000000000ULL - 1ULL; | |
fe92afed BS |
895 | |
896 | /* Initialize hwstamp config */ | |
897 | lp->stamp_cfg.rx_filter = HWTSTAMP_FILTER_NONE; | |
898 | lp->stamp_cfg.tx_type = HWTSTAMP_TX_OFF; | |
899 | } | |
900 | ||
dd87b22f RC |
901 | static u64 bfin_ptp_time_read(struct bfin_mac_local *lp) |
902 | { | |
903 | u64 ns; | |
904 | u32 lo, hi; | |
905 | ||
906 | lo = bfin_read_EMAC_PTP_TIMELO(); | |
907 | hi = bfin_read_EMAC_PTP_TIMEHI(); | |
908 | ||
909 | ns = ((u64) hi) << 32; | |
910 | ns |= lo; | |
911 | ns <<= lp->shift; | |
912 | ||
913 | return ns; | |
914 | } | |
915 | ||
916 | static void bfin_ptp_time_write(struct bfin_mac_local *lp, u64 ns) | |
917 | { | |
918 | u32 hi, lo; | |
919 | ||
920 | ns >>= lp->shift; | |
921 | hi = ns >> 32; | |
922 | lo = ns & 0xffffffff; | |
923 | ||
924 | bfin_write_EMAC_PTP_TIMELO(lo); | |
925 | bfin_write_EMAC_PTP_TIMEHI(hi); | |
926 | } | |
927 | ||
928 | /* PTP Hardware Clock operations */ | |
929 | ||
930 | static int bfin_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb) | |
931 | { | |
932 | u64 adj; | |
933 | u32 diff, addend; | |
934 | int neg_adj = 0; | |
935 | struct bfin_mac_local *lp = | |
936 | container_of(ptp, struct bfin_mac_local, caps); | |
937 | ||
938 | if (ppb < 0) { | |
939 | neg_adj = 1; | |
940 | ppb = -ppb; | |
941 | } | |
942 | addend = lp->addend; | |
943 | adj = addend; | |
944 | adj *= ppb; | |
945 | diff = div_u64(adj, 1000000000ULL); | |
946 | ||
947 | addend = neg_adj ? addend - diff : addend + diff; | |
948 | ||
949 | bfin_write_EMAC_PTP_ADDEND(addend); | |
950 | ||
951 | return 0; | |
952 | } | |
953 | ||
954 | static int bfin_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta) | |
955 | { | |
956 | s64 now; | |
957 | unsigned long flags; | |
958 | struct bfin_mac_local *lp = | |
959 | container_of(ptp, struct bfin_mac_local, caps); | |
960 | ||
961 | spin_lock_irqsave(&lp->phc_lock, flags); | |
962 | ||
963 | now = bfin_ptp_time_read(lp); | |
964 | now += delta; | |
965 | bfin_ptp_time_write(lp, now); | |
966 | ||
967 | spin_unlock_irqrestore(&lp->phc_lock, flags); | |
968 | ||
969 | return 0; | |
970 | } | |
971 | ||
20ca7fb6 | 972 | static int bfin_ptp_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts) |
dd87b22f RC |
973 | { |
974 | u64 ns; | |
dd87b22f RC |
975 | unsigned long flags; |
976 | struct bfin_mac_local *lp = | |
977 | container_of(ptp, struct bfin_mac_local, caps); | |
978 | ||
979 | spin_lock_irqsave(&lp->phc_lock, flags); | |
980 | ||
981 | ns = bfin_ptp_time_read(lp); | |
982 | ||
983 | spin_unlock_irqrestore(&lp->phc_lock, flags); | |
984 | ||
96ff1c37 RC |
985 | *ts = ns_to_timespec64(ns); |
986 | ||
dd87b22f RC |
987 | return 0; |
988 | } | |
989 | ||
990 | static int bfin_ptp_settime(struct ptp_clock_info *ptp, | |
20ca7fb6 | 991 | const struct timespec64 *ts) |
dd87b22f RC |
992 | { |
993 | u64 ns; | |
994 | unsigned long flags; | |
995 | struct bfin_mac_local *lp = | |
996 | container_of(ptp, struct bfin_mac_local, caps); | |
997 | ||
96ff1c37 | 998 | ns = timespec64_to_ns(ts); |
dd87b22f RC |
999 | |
1000 | spin_lock_irqsave(&lp->phc_lock, flags); | |
1001 | ||
1002 | bfin_ptp_time_write(lp, ns); | |
1003 | ||
1004 | spin_unlock_irqrestore(&lp->phc_lock, flags); | |
1005 | ||
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | static int bfin_ptp_enable(struct ptp_clock_info *ptp, | |
1010 | struct ptp_clock_request *rq, int on) | |
1011 | { | |
1012 | return -EOPNOTSUPP; | |
1013 | } | |
1014 | ||
1015 | static struct ptp_clock_info bfin_ptp_caps = { | |
1016 | .owner = THIS_MODULE, | |
1017 | .name = "BF518 clock", | |
1018 | .max_adj = 0, | |
1019 | .n_alarm = 0, | |
1020 | .n_ext_ts = 0, | |
1021 | .n_per_out = 0, | |
4986b4f0 | 1022 | .n_pins = 0, |
dd87b22f RC |
1023 | .pps = 0, |
1024 | .adjfreq = bfin_ptp_adjfreq, | |
1025 | .adjtime = bfin_ptp_adjtime, | |
20ca7fb6 RC |
1026 | .gettime64 = bfin_ptp_gettime, |
1027 | .settime64 = bfin_ptp_settime, | |
dd87b22f RC |
1028 | .enable = bfin_ptp_enable, |
1029 | }; | |
1030 | ||
1031 | static int bfin_phc_init(struct net_device *netdev, struct device *dev) | |
1032 | { | |
1033 | struct bfin_mac_local *lp = netdev_priv(netdev); | |
1034 | ||
1035 | lp->caps = bfin_ptp_caps; | |
1036 | lp->caps.max_adj = lp->max_ppb; | |
1037 | lp->clock = ptp_clock_register(&lp->caps, dev); | |
1038 | if (IS_ERR(lp->clock)) | |
1039 | return PTR_ERR(lp->clock); | |
1040 | ||
1041 | lp->phc_index = ptp_clock_index(lp->clock); | |
1042 | spin_lock_init(&lp->phc_lock); | |
1043 | ||
1044 | return 0; | |
1045 | } | |
1046 | ||
1047 | static void bfin_phc_release(struct bfin_mac_local *lp) | |
1048 | { | |
1049 | ptp_clock_unregister(lp->clock); | |
1050 | } | |
1051 | ||
fe92afed BS |
1052 | #else |
1053 | # define bfin_mac_hwtstamp_is_none(cfg) 0 | |
1054 | # define bfin_mac_hwtstamp_init(dev) | |
7575c917 BH |
1055 | # define bfin_mac_hwtstamp_set(dev, ifr) (-EOPNOTSUPP) |
1056 | # define bfin_mac_hwtstamp_get(dev, ifr) (-EOPNOTSUPP) | |
fe92afed BS |
1057 | # define bfin_rx_hwtstamp(dev, skb) |
1058 | # define bfin_tx_hwtstamp(dev, skb) | |
dd87b22f RC |
1059 | # define bfin_phc_init(netdev, dev) 0 |
1060 | # define bfin_phc_release(lp) | |
fe92afed BS |
1061 | #endif |
1062 | ||
4fcc3d34 SZ |
1063 | static inline void _tx_reclaim_skb(void) |
1064 | { | |
1065 | do { | |
1066 | tx_list_head->desc_a.config &= ~DMAEN; | |
1067 | tx_list_head->status.status_word = 0; | |
1068 | if (tx_list_head->skb) { | |
21534d20 | 1069 | dev_consume_skb_any(tx_list_head->skb); |
4fcc3d34 SZ |
1070 | tx_list_head->skb = NULL; |
1071 | } | |
1072 | tx_list_head = tx_list_head->next; | |
1073 | ||
1074 | } while (tx_list_head->status.status_word != 0); | |
1075 | } | |
1076 | ||
1077 | static void tx_reclaim_skb(struct bfin_mac_local *lp) | |
e190d6b1 BW |
1078 | { |
1079 | int timeout_cnt = MAX_TIMEOUT_CNT; | |
1080 | ||
4fcc3d34 SZ |
1081 | if (tx_list_head->status.status_word != 0) |
1082 | _tx_reclaim_skb(); | |
e190d6b1 | 1083 | |
4fcc3d34 | 1084 | if (current_tx_ptr->next == tx_list_head) { |
e190d6b1 | 1085 | while (tx_list_head->status.status_word == 0) { |
4fcc3d34 | 1086 | /* slow down polling to avoid too many queue stop. */ |
015dac88 | 1087 | udelay(10); |
4fcc3d34 SZ |
1088 | /* reclaim skb if DMA is not running. */ |
1089 | if (!(bfin_read_DMA2_IRQ_STATUS() & DMA_RUN)) | |
1090 | break; | |
1091 | if (timeout_cnt-- < 0) | |
e190d6b1 | 1092 | break; |
e190d6b1 | 1093 | } |
4fcc3d34 SZ |
1094 | |
1095 | if (timeout_cnt >= 0) | |
1096 | _tx_reclaim_skb(); | |
1097 | else | |
1098 | netif_stop_queue(lp->ndev); | |
e190d6b1 BW |
1099 | } |
1100 | ||
4fcc3d34 SZ |
1101 | if (current_tx_ptr->next != tx_list_head && |
1102 | netif_queue_stopped(lp->ndev)) | |
1103 | netif_wake_queue(lp->ndev); | |
1104 | ||
1105 | if (tx_list_head != current_tx_ptr) { | |
1106 | /* shorten the timer interval if tx queue is stopped */ | |
1107 | if (netif_queue_stopped(lp->ndev)) | |
1108 | lp->tx_reclaim_timer.expires = | |
1109 | jiffies + (TX_RECLAIM_JIFFIES >> 4); | |
1110 | else | |
1111 | lp->tx_reclaim_timer.expires = | |
1112 | jiffies + TX_RECLAIM_JIFFIES; | |
1113 | ||
1114 | mod_timer(&lp->tx_reclaim_timer, | |
1115 | lp->tx_reclaim_timer.expires); | |
1116 | } | |
e190d6b1 | 1117 | |
e190d6b1 | 1118 | return; |
4fcc3d34 | 1119 | } |
e190d6b1 | 1120 | |
4fcc3d34 SZ |
1121 | static void tx_reclaim_skb_timeout(unsigned long lp) |
1122 | { | |
1123 | tx_reclaim_skb((struct bfin_mac_local *)lp); | |
e190d6b1 BW |
1124 | } |
1125 | ||
7ef0a7ee | 1126 | static int bfin_mac_hard_start_xmit(struct sk_buff *skb, |
e190d6b1 BW |
1127 | struct net_device *dev) |
1128 | { | |
4fcc3d34 | 1129 | struct bfin_mac_local *lp = netdev_priv(dev); |
a50c0c05 | 1130 | u16 *data; |
015dac88 | 1131 | u32 data_align = (unsigned long)(skb->data) & 0x3; |
fe92afed | 1132 | |
e190d6b1 BW |
1133 | current_tx_ptr->skb = skb; |
1134 | ||
015dac88 MH |
1135 | if (data_align == 0x2) { |
1136 | /* move skb->data to current_tx_ptr payload */ | |
1137 | data = (u16 *)(skb->data) - 1; | |
fe92afed BS |
1138 | *data = (u16)(skb->len); |
1139 | /* | |
1140 | * When transmitting an Ethernet packet, the PTP_TSYNC module requires | |
1141 | * a DMA_Length_Word field associated with the packet. The lower 12 bits | |
1142 | * of this field are the length of the packet payload in bytes and the higher | |
1143 | * 4 bits are the timestamping enable field. | |
1144 | */ | |
2244d07b | 1145 | if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) |
fe92afed BS |
1146 | *data |= 0x1000; |
1147 | ||
015dac88 MH |
1148 | current_tx_ptr->desc_a.start_addr = (u32)data; |
1149 | /* this is important! */ | |
1150 | blackfin_dcache_flush_range((u32)data, | |
1151 | (u32)((u8 *)data + skb->len + 4)); | |
e190d6b1 | 1152 | } else { |
015dac88 | 1153 | *((u16 *)(current_tx_ptr->packet)) = (u16)(skb->len); |
fe92afed | 1154 | /* enable timestamping for the sent packet */ |
2244d07b | 1155 | if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) |
fe92afed | 1156 | *((u16 *)(current_tx_ptr->packet)) |= 0x1000; |
015dac88 MH |
1157 | memcpy((u8 *)(current_tx_ptr->packet + 2), skb->data, |
1158 | skb->len); | |
1159 | current_tx_ptr->desc_a.start_addr = | |
1160 | (u32)current_tx_ptr->packet; | |
015dac88 MH |
1161 | blackfin_dcache_flush_range( |
1162 | (u32)current_tx_ptr->packet, | |
1163 | (u32)(current_tx_ptr->packet + skb->len + 2)); | |
e190d6b1 BW |
1164 | } |
1165 | ||
805a8ab3 SZ |
1166 | /* make sure the internal data buffers in the core are drained |
1167 | * so that the DMA descriptors are completely written when the | |
1168 | * DMA engine goes to fetch them below | |
1169 | */ | |
1170 | SSYNC(); | |
1171 | ||
4fcc3d34 SZ |
1172 | /* always clear status buffer before start tx dma */ |
1173 | current_tx_ptr->status.status_word = 0; | |
1174 | ||
e190d6b1 BW |
1175 | /* enable this packet's dma */ |
1176 | current_tx_ptr->desc_a.config |= DMAEN; | |
1177 | ||
1178 | /* tx dma is running, just return */ | |
015dac88 | 1179 | if (bfin_read_DMA2_IRQ_STATUS() & DMA_RUN) |
e190d6b1 BW |
1180 | goto out; |
1181 | ||
1182 | /* tx dma is not running */ | |
1183 | bfin_write_DMA2_NEXT_DESC_PTR(&(current_tx_ptr->desc_a)); | |
1184 | /* dma enabled, read from memory, size is 6 */ | |
1185 | bfin_write_DMA2_CONFIG(current_tx_ptr->desc_a.config); | |
1186 | /* Turn on the EMAC tx */ | |
1187 | bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE); | |
1188 | ||
1189 | out: | |
fe92afed BS |
1190 | bfin_tx_hwtstamp(dev, skb); |
1191 | ||
e190d6b1 | 1192 | current_tx_ptr = current_tx_ptr->next; |
09f75cd7 JG |
1193 | dev->stats.tx_packets++; |
1194 | dev->stats.tx_bytes += (skb->len); | |
4fcc3d34 SZ |
1195 | |
1196 | tx_reclaim_skb(lp); | |
1197 | ||
6ed10654 | 1198 | return NETDEV_TX_OK; |
e190d6b1 BW |
1199 | } |
1200 | ||
ad2864d8 | 1201 | #define IP_HEADER_OFF 0 |
ec497b32 PM |
1202 | #define RX_ERROR_MASK (RX_LONG | RX_ALIGN | RX_CRC | RX_LEN | \ |
1203 | RX_FRAG | RX_ADDR | RX_DMAO | RX_PHY | RX_LATE | RX_RANGE) | |
1204 | ||
159945af | 1205 | static void bfin_mac_rx(struct bfin_mac_local *lp) |
e190d6b1 | 1206 | { |
159945af | 1207 | struct net_device *dev = lp->ndev; |
e190d6b1 | 1208 | struct sk_buff *skb, *new_skb; |
e190d6b1 | 1209 | unsigned short len; |
ad2864d8 SZ |
1210 | #if defined(BFIN_MAC_CSUM_OFFLOAD) |
1211 | unsigned int i; | |
1212 | unsigned char fcs[ETH_FCS_LEN + 1]; | |
1213 | #endif | |
e190d6b1 | 1214 | |
ec497b32 PM |
1215 | /* check if frame status word reports an error condition |
1216 | * we which case we simply drop the packet | |
1217 | */ | |
1218 | if (current_rx_ptr->status.status_word & RX_ERROR_MASK) { | |
c6dd5098 | 1219 | netdev_notice(dev, "rx: receive error - packet dropped\n"); |
ec497b32 PM |
1220 | dev->stats.rx_dropped++; |
1221 | goto out; | |
1222 | } | |
1223 | ||
e190d6b1 BW |
1224 | /* allocate a new skb for next time receive */ |
1225 | skb = current_rx_ptr->skb; | |
fe92afed | 1226 | |
1ab0d2ec | 1227 | new_skb = netdev_alloc_skb(dev, PKT_BUF_SZ + NET_IP_ALIGN); |
e190d6b1 | 1228 | if (!new_skb) { |
09f75cd7 | 1229 | dev->stats.rx_dropped++; |
e190d6b1 BW |
1230 | goto out; |
1231 | } | |
1232 | /* reserve 2 bytes for RXDWA padding */ | |
015dac88 | 1233 | skb_reserve(new_skb, NET_IP_ALIGN); |
6e01d1a4 AD |
1234 | /* Invidate the data cache of skb->data range when it is write back |
1235 | * cache. It will prevent overwritting the new data from DMA | |
1236 | */ | |
1237 | blackfin_dcache_invalidate_range((unsigned long)new_skb->head, | |
1238 | (unsigned long)new_skb->end); | |
1239 | ||
f6e1e4f3 SZ |
1240 | current_rx_ptr->skb = new_skb; |
1241 | current_rx_ptr->desc_a.start_addr = (unsigned long)new_skb->data - 2; | |
1242 | ||
159945af | 1243 | len = (unsigned short)(current_rx_ptr->status.status_word & RX_FRLEN); |
ad2864d8 SZ |
1244 | /* Deduce Ethernet FCS length from Ethernet payload length */ |
1245 | len -= ETH_FCS_LEN; | |
e190d6b1 | 1246 | skb_put(skb, len); |
e190d6b1 | 1247 | |
e190d6b1 | 1248 | skb->protocol = eth_type_trans(skb, dev); |
fe92afed BS |
1249 | |
1250 | bfin_rx_hwtstamp(dev, skb); | |
1251 | ||
e190d6b1 | 1252 | #if defined(BFIN_MAC_CSUM_OFFLOAD) |
ad2864d8 SZ |
1253 | /* Checksum offloading only works for IPv4 packets with the standard IP header |
1254 | * length of 20 bytes, because the blackfin MAC checksum calculation is | |
1255 | * based on that assumption. We must NOT use the calculated checksum if our | |
1256 | * IP version or header break that assumption. | |
1257 | */ | |
1258 | if (skb->data[IP_HEADER_OFF] == 0x45) { | |
1259 | skb->csum = current_rx_ptr->status.ip_payload_csum; | |
1260 | /* | |
1261 | * Deduce Ethernet FCS from hardware generated IP payload checksum. | |
1262 | * IP checksum is based on 16-bit one's complement algorithm. | |
1263 | * To deduce a value from checksum is equal to add its inversion. | |
1264 | * If the IP payload len is odd, the inversed FCS should also | |
1265 | * begin from odd address and leave first byte zero. | |
1266 | */ | |
1267 | if (skb->len % 2) { | |
1268 | fcs[0] = 0; | |
1269 | for (i = 0; i < ETH_FCS_LEN; i++) | |
1270 | fcs[i + 1] = ~skb->data[skb->len + i]; | |
1271 | skb->csum = csum_partial(fcs, ETH_FCS_LEN + 1, skb->csum); | |
1272 | } else { | |
1273 | for (i = 0; i < ETH_FCS_LEN; i++) | |
1274 | fcs[i] = ~skb->data[skb->len + i]; | |
1275 | skb->csum = csum_partial(fcs, ETH_FCS_LEN, skb->csum); | |
1276 | } | |
1277 | skb->ip_summed = CHECKSUM_COMPLETE; | |
1278 | } | |
e190d6b1 BW |
1279 | #endif |
1280 | ||
159945af SZ |
1281 | napi_gro_receive(&lp->napi, skb); |
1282 | ||
09f75cd7 JG |
1283 | dev->stats.rx_packets++; |
1284 | dev->stats.rx_bytes += len; | |
ec497b32 | 1285 | out: |
e190d6b1 BW |
1286 | current_rx_ptr->status.status_word = 0x00000000; |
1287 | current_rx_ptr = current_rx_ptr->next; | |
e190d6b1 BW |
1288 | } |
1289 | ||
159945af SZ |
1290 | static int bfin_mac_poll(struct napi_struct *napi, int budget) |
1291 | { | |
1292 | int i = 0; | |
1293 | struct bfin_mac_local *lp = container_of(napi, | |
1294 | struct bfin_mac_local, | |
1295 | napi); | |
1296 | ||
1297 | while (current_rx_ptr->status.status_word != 0 && i < budget) { | |
1298 | bfin_mac_rx(lp); | |
1299 | i++; | |
1300 | } | |
1301 | ||
1302 | if (i < budget) { | |
1303 | napi_complete(napi); | |
1304 | if (test_and_clear_bit(BFIN_MAC_RX_IRQ_DISABLED, &lp->flags)) | |
1305 | enable_irq(IRQ_MAC_RX); | |
1306 | } | |
1307 | ||
1308 | return i; | |
1309 | } | |
1310 | ||
e190d6b1 | 1311 | /* interrupt routine to handle rx and error signal */ |
7ef0a7ee | 1312 | static irqreturn_t bfin_mac_interrupt(int irq, void *dev_id) |
e190d6b1 | 1313 | { |
159945af SZ |
1314 | struct bfin_mac_local *lp = netdev_priv(dev_id); |
1315 | u32 status; | |
1316 | ||
1317 | status = bfin_read_DMA1_IRQ_STATUS(); | |
1318 | ||
1319 | bfin_write_DMA1_IRQ_STATUS(status | DMA_DONE | DMA_ERR); | |
1320 | if (status & DMA_DONE) { | |
1321 | disable_irq_nosync(IRQ_MAC_RX); | |
1322 | set_bit(BFIN_MAC_RX_IRQ_DISABLED, &lp->flags); | |
1323 | napi_schedule(&lp->napi); | |
e190d6b1 BW |
1324 | } |
1325 | ||
159945af | 1326 | return IRQ_HANDLED; |
e190d6b1 BW |
1327 | } |
1328 | ||
1329 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
159945af | 1330 | static void bfin_mac_poll_controller(struct net_device *dev) |
e190d6b1 | 1331 | { |
4fcc3d34 SZ |
1332 | struct bfin_mac_local *lp = netdev_priv(dev); |
1333 | ||
7ef0a7ee | 1334 | bfin_mac_interrupt(IRQ_MAC_RX, dev); |
4fcc3d34 | 1335 | tx_reclaim_skb(lp); |
e190d6b1 BW |
1336 | } |
1337 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
1338 | ||
7ef0a7ee | 1339 | static void bfin_mac_disable(void) |
e190d6b1 BW |
1340 | { |
1341 | unsigned int opmode; | |
1342 | ||
1343 | opmode = bfin_read_EMAC_OPMODE(); | |
1344 | opmode &= (~RE); | |
1345 | opmode &= (~TE); | |
1346 | /* Turn off the EMAC */ | |
1347 | bfin_write_EMAC_OPMODE(opmode); | |
1348 | } | |
1349 | ||
1350 | /* | |
1351 | * Enable Interrupts, Receive, and Transmit | |
1352 | */ | |
02460d08 | 1353 | static int bfin_mac_enable(struct phy_device *phydev) |
e190d6b1 | 1354 | { |
2bfa0f0c | 1355 | int ret; |
e190d6b1 BW |
1356 | u32 opmode; |
1357 | ||
c6dd5098 | 1358 | pr_debug("%s\n", __func__); |
e190d6b1 BW |
1359 | |
1360 | /* Set RX DMA */ | |
1361 | bfin_write_DMA1_NEXT_DESC_PTR(&(rx_list_head->desc_a)); | |
1362 | bfin_write_DMA1_CONFIG(rx_list_head->desc_a.config); | |
1363 | ||
1364 | /* Wait MII done */ | |
2bfa0f0c MF |
1365 | ret = bfin_mdio_poll(); |
1366 | if (ret) | |
1367 | return ret; | |
e190d6b1 BW |
1368 | |
1369 | /* We enable only RX here */ | |
1370 | /* ASTP : Enable Automatic Pad Stripping | |
1371 | PR : Promiscuous Mode for test | |
1372 | PSF : Receive frames with total length less than 64 bytes. | |
1373 | FDMODE : Full Duplex Mode | |
1374 | LB : Internal Loopback for test | |
1375 | RE : Receiver Enable */ | |
1376 | opmode = bfin_read_EMAC_OPMODE(); | |
1377 | if (opmode & FDMODE) | |
1378 | opmode |= PSF; | |
1379 | else | |
1380 | opmode |= DRO | DC | PSF; | |
1381 | opmode |= RE; | |
1382 | ||
02460d08 SZ |
1383 | if (phydev->interface == PHY_INTERFACE_MODE_RMII) { |
1384 | opmode |= RMII; /* For Now only 100MBit are supported */ | |
72f49050 MF |
1385 | #if defined(CONFIG_BF537) || defined(CONFIG_BF536) |
1386 | if (__SILICON_REVISION__ < 3) { | |
1387 | /* | |
1388 | * This isn't publicly documented (fun times!), but in | |
1389 | * silicon <=0.2, the RX and TX pins are clocked together. | |
1390 | * So in order to recv, we must enable the transmit side | |
1391 | * as well. This will cause a spurious TX interrupt too, | |
1392 | * but we can easily consume that. | |
1393 | */ | |
1394 | opmode |= TE; | |
1395 | } | |
e190d6b1 | 1396 | #endif |
02460d08 SZ |
1397 | } |
1398 | ||
e190d6b1 BW |
1399 | /* Turn on the EMAC rx */ |
1400 | bfin_write_EMAC_OPMODE(opmode); | |
2bfa0f0c MF |
1401 | |
1402 | return 0; | |
e190d6b1 BW |
1403 | } |
1404 | ||
1405 | /* Our watchdog timed out. Called by the networking layer */ | |
7ef0a7ee | 1406 | static void bfin_mac_timeout(struct net_device *dev) |
e190d6b1 | 1407 | { |
4fcc3d34 SZ |
1408 | struct bfin_mac_local *lp = netdev_priv(dev); |
1409 | ||
b39d66a8 | 1410 | pr_debug("%s: %s\n", dev->name, __func__); |
e190d6b1 | 1411 | |
7ef0a7ee | 1412 | bfin_mac_disable(); |
e190d6b1 | 1413 | |
4fcc3d34 SZ |
1414 | del_timer(&lp->tx_reclaim_timer); |
1415 | ||
1416 | /* reset tx queue and free skb */ | |
1417 | while (tx_list_head != current_tx_ptr) { | |
1418 | tx_list_head->desc_a.config &= ~DMAEN; | |
1419 | tx_list_head->status.status_word = 0; | |
1420 | if (tx_list_head->skb) { | |
1421 | dev_kfree_skb(tx_list_head->skb); | |
1422 | tx_list_head->skb = NULL; | |
1423 | } | |
1424 | tx_list_head = tx_list_head->next; | |
1425 | } | |
1426 | ||
159945af SZ |
1427 | if (netif_queue_stopped(dev)) |
1428 | netif_wake_queue(dev); | |
e190d6b1 | 1429 | |
02460d08 | 1430 | bfin_mac_enable(lp->phydev); |
e190d6b1 BW |
1431 | |
1432 | /* We can accept TX packets again */ | |
1ae5dc34 | 1433 | dev->trans_start = jiffies; /* prevent tx timeout */ |
e190d6b1 BW |
1434 | } |
1435 | ||
7ef0a7ee | 1436 | static void bfin_mac_multicast_hash(struct net_device *dev) |
775919bc AW |
1437 | { |
1438 | u32 emac_hashhi, emac_hashlo; | |
22bedad3 | 1439 | struct netdev_hw_addr *ha; |
775919bc AW |
1440 | u32 crc; |
1441 | ||
1442 | emac_hashhi = emac_hashlo = 0; | |
1443 | ||
22bedad3 | 1444 | netdev_for_each_mc_addr(ha, dev) { |
f767b6df | 1445 | crc = ether_crc(ETH_ALEN, ha->addr); |
775919bc AW |
1446 | crc >>= 26; |
1447 | ||
1448 | if (crc & 0x20) | |
1449 | emac_hashhi |= 1 << (crc & 0x1f); | |
1450 | else | |
1451 | emac_hashlo |= 1 << (crc & 0x1f); | |
1452 | } | |
1453 | ||
1454 | bfin_write_EMAC_HASHHI(emac_hashhi); | |
1455 | bfin_write_EMAC_HASHLO(emac_hashlo); | |
775919bc AW |
1456 | } |
1457 | ||
e190d6b1 BW |
1458 | /* |
1459 | * This routine will, depending on the values passed to it, | |
1460 | * either make it accept multicast packets, go into | |
1461 | * promiscuous mode (for TCPDUMP and cousins) or accept | |
1462 | * a select set of multicast packets | |
1463 | */ | |
7ef0a7ee | 1464 | static void bfin_mac_set_multicast_list(struct net_device *dev) |
e190d6b1 BW |
1465 | { |
1466 | u32 sysctl; | |
1467 | ||
1468 | if (dev->flags & IFF_PROMISC) { | |
c6dd5098 | 1469 | netdev_info(dev, "set promisc mode\n"); |
e190d6b1 | 1470 | sysctl = bfin_read_EMAC_OPMODE(); |
c0da776b | 1471 | sysctl |= PR; |
e190d6b1 | 1472 | bfin_write_EMAC_OPMODE(sysctl); |
775919bc | 1473 | } else if (dev->flags & IFF_ALLMULTI) { |
e190d6b1 BW |
1474 | /* accept all multicast */ |
1475 | sysctl = bfin_read_EMAC_OPMODE(); | |
1476 | sysctl |= PAM; | |
1477 | bfin_write_EMAC_OPMODE(sysctl); | |
4cd24eaf | 1478 | } else if (!netdev_mc_empty(dev)) { |
775919bc AW |
1479 | /* set up multicast hash table */ |
1480 | sysctl = bfin_read_EMAC_OPMODE(); | |
1481 | sysctl |= HM; | |
1482 | bfin_write_EMAC_OPMODE(sysctl); | |
7ef0a7ee | 1483 | bfin_mac_multicast_hash(dev); |
e190d6b1 BW |
1484 | } else { |
1485 | /* clear promisc or multicast mode */ | |
1486 | sysctl = bfin_read_EMAC_OPMODE(); | |
1487 | sysctl &= ~(RAF | PAM); | |
1488 | bfin_write_EMAC_OPMODE(sysctl); | |
1489 | } | |
1490 | } | |
1491 | ||
fe92afed BS |
1492 | static int bfin_mac_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
1493 | { | |
02460d08 SZ |
1494 | struct bfin_mac_local *lp = netdev_priv(netdev); |
1495 | ||
1496 | if (!netif_running(netdev)) | |
1497 | return -EINVAL; | |
1498 | ||
fe92afed BS |
1499 | switch (cmd) { |
1500 | case SIOCSHWTSTAMP: | |
7575c917 BH |
1501 | return bfin_mac_hwtstamp_set(netdev, ifr); |
1502 | case SIOCGHWTSTAMP: | |
1503 | return bfin_mac_hwtstamp_get(netdev, ifr); | |
fe92afed | 1504 | default: |
02460d08 SZ |
1505 | if (lp->phydev) |
1506 | return phy_mii_ioctl(lp->phydev, ifr, cmd); | |
1507 | else | |
1508 | return -EOPNOTSUPP; | |
fe92afed BS |
1509 | } |
1510 | } | |
1511 | ||
e190d6b1 BW |
1512 | /* |
1513 | * this puts the device in an inactive state | |
1514 | */ | |
7ef0a7ee | 1515 | static void bfin_mac_shutdown(struct net_device *dev) |
e190d6b1 BW |
1516 | { |
1517 | /* Turn off the EMAC */ | |
1518 | bfin_write_EMAC_OPMODE(0x00000000); | |
1519 | /* Turn off the EMAC RX DMA */ | |
1520 | bfin_write_DMA1_CONFIG(0x0000); | |
1521 | bfin_write_DMA2_CONFIG(0x0000); | |
1522 | } | |
1523 | ||
1524 | /* | |
1525 | * Open and Initialize the interface | |
1526 | * | |
1527 | * Set up everything, reset the card, etc.. | |
1528 | */ | |
7ef0a7ee | 1529 | static int bfin_mac_open(struct net_device *dev) |
e190d6b1 | 1530 | { |
7ef0a7ee | 1531 | struct bfin_mac_local *lp = netdev_priv(dev); |
2bfa0f0c | 1532 | int ret; |
b39d66a8 | 1533 | pr_debug("%s: %s\n", dev->name, __func__); |
e190d6b1 BW |
1534 | |
1535 | /* | |
1536 | * Check that the address is valid. If its not, refuse | |
1537 | * to bring the device up. The user must specify an | |
1538 | * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx | |
1539 | */ | |
1540 | if (!is_valid_ether_addr(dev->dev_addr)) { | |
c6dd5098 | 1541 | netdev_warn(dev, "no valid ethernet hw addr\n"); |
e190d6b1 BW |
1542 | return -EINVAL; |
1543 | } | |
1544 | ||
1545 | /* initial rx and tx list */ | |
1ab0d2ec | 1546 | ret = desc_list_init(dev); |
2bfa0f0c MF |
1547 | if (ret) |
1548 | return ret; | |
e190d6b1 | 1549 | |
4ae5a3ad | 1550 | phy_start(lp->phydev); |
e190d6b1 | 1551 | setup_system_regs(dev); |
ee02fee8 | 1552 | setup_mac_addr(dev->dev_addr); |
2bfa0f0c | 1553 | |
7ef0a7ee | 1554 | bfin_mac_disable(); |
02460d08 | 1555 | ret = bfin_mac_enable(lp->phydev); |
2bfa0f0c MF |
1556 | if (ret) |
1557 | return ret; | |
e190d6b1 | 1558 | pr_debug("hardware init finished\n"); |
2bfa0f0c | 1559 | |
159945af | 1560 | napi_enable(&lp->napi); |
e190d6b1 BW |
1561 | netif_start_queue(dev); |
1562 | netif_carrier_on(dev); | |
1563 | ||
1564 | return 0; | |
1565 | } | |
1566 | ||
1567 | /* | |
e190d6b1 BW |
1568 | * this makes the board clean up everything that it can |
1569 | * and not talk to the outside world. Caused by | |
1570 | * an 'ifconfig ethX down' | |
1571 | */ | |
7ef0a7ee | 1572 | static int bfin_mac_close(struct net_device *dev) |
e190d6b1 | 1573 | { |
7ef0a7ee | 1574 | struct bfin_mac_local *lp = netdev_priv(dev); |
b39d66a8 | 1575 | pr_debug("%s: %s\n", dev->name, __func__); |
e190d6b1 BW |
1576 | |
1577 | netif_stop_queue(dev); | |
159945af | 1578 | napi_disable(&lp->napi); |
e190d6b1 BW |
1579 | netif_carrier_off(dev); |
1580 | ||
4ae5a3ad | 1581 | phy_stop(lp->phydev); |
136492b2 | 1582 | phy_write(lp->phydev, MII_BMCR, BMCR_PDOWN); |
4ae5a3ad | 1583 | |
e190d6b1 | 1584 | /* clear everything */ |
7ef0a7ee | 1585 | bfin_mac_shutdown(dev); |
e190d6b1 BW |
1586 | |
1587 | /* free the rx/tx buffers */ | |
1588 | desc_list_free(); | |
1589 | ||
1590 | return 0; | |
1591 | } | |
1592 | ||
b63dc8fe MF |
1593 | static const struct net_device_ops bfin_mac_netdev_ops = { |
1594 | .ndo_open = bfin_mac_open, | |
1595 | .ndo_stop = bfin_mac_close, | |
1596 | .ndo_start_xmit = bfin_mac_hard_start_xmit, | |
1597 | .ndo_set_mac_address = bfin_mac_set_mac_address, | |
1598 | .ndo_tx_timeout = bfin_mac_timeout, | |
afc4b13d | 1599 | .ndo_set_rx_mode = bfin_mac_set_multicast_list, |
fe92afed | 1600 | .ndo_do_ioctl = bfin_mac_ioctl, |
b63dc8fe MF |
1601 | .ndo_validate_addr = eth_validate_addr, |
1602 | .ndo_change_mtu = eth_change_mtu, | |
1603 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
159945af | 1604 | .ndo_poll_controller = bfin_mac_poll_controller, |
b63dc8fe MF |
1605 | #endif |
1606 | }; | |
1607 | ||
49f7315b | 1608 | static int bfin_mac_probe(struct platform_device *pdev) |
e190d6b1 | 1609 | { |
7ef0a7ee BW |
1610 | struct net_device *ndev; |
1611 | struct bfin_mac_local *lp; | |
080c8255 | 1612 | struct platform_device *pd; |
02460d08 | 1613 | struct bfin_mii_bus_platform_data *mii_bus_data; |
080c8255 | 1614 | int rc; |
7ef0a7ee BW |
1615 | |
1616 | ndev = alloc_etherdev(sizeof(struct bfin_mac_local)); | |
41de8d4c | 1617 | if (!ndev) |
7ef0a7ee | 1618 | return -ENOMEM; |
7ef0a7ee BW |
1619 | |
1620 | SET_NETDEV_DEV(ndev, &pdev->dev); | |
1621 | platform_set_drvdata(pdev, ndev); | |
1622 | lp = netdev_priv(ndev); | |
4fcc3d34 | 1623 | lp->ndev = ndev; |
e190d6b1 BW |
1624 | |
1625 | /* Grab the MAC address in the MAC */ | |
7ef0a7ee BW |
1626 | *(__le32 *) (&(ndev->dev_addr[0])) = cpu_to_le32(bfin_read_EMAC_ADDRLO()); |
1627 | *(__le16 *) (&(ndev->dev_addr[4])) = cpu_to_le16((u16) bfin_read_EMAC_ADDRHI()); | |
e190d6b1 BW |
1628 | |
1629 | /* probe mac */ | |
1630 | /*todo: how to proble? which is revision_register */ | |
1631 | bfin_write_EMAC_ADDRLO(0x12345678); | |
1632 | if (bfin_read_EMAC_ADDRLO() != 0x12345678) { | |
7ef0a7ee BW |
1633 | dev_err(&pdev->dev, "Cannot detect Blackfin on-chip ethernet MAC controller!\n"); |
1634 | rc = -ENODEV; | |
1635 | goto out_err_probe_mac; | |
e190d6b1 BW |
1636 | } |
1637 | ||
e190d6b1 | 1638 | |
7ef0a7ee BW |
1639 | /* |
1640 | * Is it valid? (Did bootloader initialize it?) | |
1641 | * Grab the MAC from the board somehow | |
1642 | * this is done in the arch/blackfin/mach-bfxxx/boards/eth_mac.c | |
1643 | */ | |
5055d2f2 DK |
1644 | if (!is_valid_ether_addr(ndev->dev_addr)) { |
1645 | if (bfin_get_ether_addr(ndev->dev_addr) || | |
1646 | !is_valid_ether_addr(ndev->dev_addr)) { | |
1647 | /* Still not valid, get a random one */ | |
1648 | netdev_warn(ndev, "Setting Ethernet MAC to a random one\n"); | |
1649 | eth_hw_addr_random(ndev); | |
1650 | } | |
1651 | } | |
e190d6b1 | 1652 | |
7ef0a7ee | 1653 | setup_mac_addr(ndev->dev_addr); |
e190d6b1 | 1654 | |
a63b82c4 | 1655 | if (!dev_get_platdata(&pdev->dev)) { |
080c8255 GY |
1656 | dev_err(&pdev->dev, "Cannot get platform device bfin_mii_bus!\n"); |
1657 | rc = -ENODEV; | |
1658 | goto out_err_probe_mac; | |
7ef0a7ee | 1659 | } |
a63b82c4 | 1660 | pd = dev_get_platdata(&pdev->dev); |
080c8255 | 1661 | lp->mii_bus = platform_get_drvdata(pd); |
0e995cd3 SZ |
1662 | if (!lp->mii_bus) { |
1663 | dev_err(&pdev->dev, "Cannot get mii_bus!\n"); | |
1664 | rc = -ENODEV; | |
02460d08 | 1665 | goto out_err_probe_mac; |
0e995cd3 | 1666 | } |
080c8255 | 1667 | lp->mii_bus->priv = ndev; |
a63b82c4 | 1668 | mii_bus_data = dev_get_platdata(&pd->dev); |
4ae5a3ad | 1669 | |
02460d08 | 1670 | rc = mii_probe(ndev, mii_bus_data->phy_mode); |
7ef0a7ee BW |
1671 | if (rc) { |
1672 | dev_err(&pdev->dev, "MII Probe failed!\n"); | |
1673 | goto out_err_mii_probe; | |
1674 | } | |
4ae5a3ad | 1675 | |
c599bd6b MF |
1676 | lp->vlan1_mask = ETH_P_8021Q | mii_bus_data->vlan1_mask; |
1677 | lp->vlan2_mask = ETH_P_8021Q | mii_bus_data->vlan2_mask; | |
1678 | ||
149da651 | 1679 | ndev->netdev_ops = &bfin_mac_netdev_ops; |
679dce39 | 1680 | ndev->ethtool_ops = &bfin_mac_ethtool_ops; |
e190d6b1 | 1681 | |
4fcc3d34 SZ |
1682 | init_timer(&lp->tx_reclaim_timer); |
1683 | lp->tx_reclaim_timer.data = (unsigned long)lp; | |
1684 | lp->tx_reclaim_timer.function = tx_reclaim_skb_timeout; | |
1685 | ||
159945af SZ |
1686 | lp->flags = 0; |
1687 | netif_napi_add(ndev, &lp->napi, bfin_mac_poll, CONFIG_BFIN_RX_DESC_NUM); | |
1688 | ||
e190d6b1 BW |
1689 | spin_lock_init(&lp->lock); |
1690 | ||
1691 | /* now, enable interrupts */ | |
1692 | /* register irq handler */ | |
7ef0a7ee | 1693 | rc = request_irq(IRQ_MAC_RX, bfin_mac_interrupt, |
63aca0f7 | 1694 | 0, "EMAC_RX", ndev); |
7ef0a7ee BW |
1695 | if (rc) { |
1696 | dev_err(&pdev->dev, "Cannot request Blackfin MAC RX IRQ!\n"); | |
1697 | rc = -EBUSY; | |
1698 | goto out_err_request_irq; | |
e190d6b1 BW |
1699 | } |
1700 | ||
7ef0a7ee BW |
1701 | rc = register_netdev(ndev); |
1702 | if (rc) { | |
1703 | dev_err(&pdev->dev, "Cannot register net device!\n"); | |
1704 | goto out_err_reg_ndev; | |
e190d6b1 BW |
1705 | } |
1706 | ||
fe92afed | 1707 | bfin_mac_hwtstamp_init(ndev); |
2c006994 WY |
1708 | rc = bfin_phc_init(ndev, &pdev->dev); |
1709 | if (rc) { | |
dd87b22f RC |
1710 | dev_err(&pdev->dev, "Cannot register PHC device!\n"); |
1711 | goto out_err_phc; | |
1712 | } | |
fe92afed | 1713 | |
7ef0a7ee | 1714 | /* now, print out the card info, in a short format.. */ |
c6dd5098 | 1715 | netdev_info(ndev, "%s, Version %s\n", DRV_DESC, DRV_VERSION); |
e190d6b1 | 1716 | |
7ef0a7ee | 1717 | return 0; |
e190d6b1 | 1718 | |
dd87b22f | 1719 | out_err_phc: |
7ef0a7ee BW |
1720 | out_err_reg_ndev: |
1721 | free_irq(IRQ_MAC_RX, ndev); | |
1722 | out_err_request_irq: | |
159945af | 1723 | netif_napi_del(&lp->napi); |
7ef0a7ee | 1724 | out_err_mii_probe: |
298cf9be | 1725 | mdiobus_unregister(lp->mii_bus); |
298cf9be | 1726 | mdiobus_free(lp->mii_bus); |
7ef0a7ee | 1727 | out_err_probe_mac: |
7ef0a7ee | 1728 | free_netdev(ndev); |
e190d6b1 | 1729 | |
7ef0a7ee | 1730 | return rc; |
e190d6b1 BW |
1731 | } |
1732 | ||
49f7315b | 1733 | static int bfin_mac_remove(struct platform_device *pdev) |
e190d6b1 BW |
1734 | { |
1735 | struct net_device *ndev = platform_get_drvdata(pdev); | |
7ef0a7ee | 1736 | struct bfin_mac_local *lp = netdev_priv(ndev); |
e190d6b1 | 1737 | |
dd87b22f RC |
1738 | bfin_phc_release(lp); |
1739 | ||
080c8255 | 1740 | lp->mii_bus->priv = NULL; |
7ef0a7ee | 1741 | |
e190d6b1 BW |
1742 | unregister_netdev(ndev); |
1743 | ||
159945af SZ |
1744 | netif_napi_del(&lp->napi); |
1745 | ||
e190d6b1 BW |
1746 | free_irq(IRQ_MAC_RX, ndev); |
1747 | ||
1748 | free_netdev(ndev); | |
1749 | ||
e190d6b1 BW |
1750 | return 0; |
1751 | } | |
1752 | ||
496a34c2 BW |
1753 | #ifdef CONFIG_PM |
1754 | static int bfin_mac_suspend(struct platform_device *pdev, pm_message_t mesg) | |
e190d6b1 | 1755 | { |
496a34c2 | 1756 | struct net_device *net_dev = platform_get_drvdata(pdev); |
53fd3f28 | 1757 | struct bfin_mac_local *lp = netdev_priv(net_dev); |
496a34c2 | 1758 | |
53fd3f28 MH |
1759 | if (lp->wol) { |
1760 | bfin_write_EMAC_OPMODE((bfin_read_EMAC_OPMODE() & ~TE) | RE); | |
1761 | bfin_write_EMAC_WKUP_CTL(MPKE); | |
1762 | enable_irq_wake(IRQ_MAC_WAKEDET); | |
1763 | } else { | |
1764 | if (netif_running(net_dev)) | |
1765 | bfin_mac_close(net_dev); | |
1766 | } | |
496a34c2 | 1767 | |
e190d6b1 BW |
1768 | return 0; |
1769 | } | |
1770 | ||
1771 | static int bfin_mac_resume(struct platform_device *pdev) | |
1772 | { | |
496a34c2 | 1773 | struct net_device *net_dev = platform_get_drvdata(pdev); |
53fd3f28 | 1774 | struct bfin_mac_local *lp = netdev_priv(net_dev); |
496a34c2 | 1775 | |
53fd3f28 MH |
1776 | if (lp->wol) { |
1777 | bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE); | |
1778 | bfin_write_EMAC_WKUP_CTL(0); | |
1779 | disable_irq_wake(IRQ_MAC_WAKEDET); | |
1780 | } else { | |
1781 | if (netif_running(net_dev)) | |
1782 | bfin_mac_open(net_dev); | |
1783 | } | |
496a34c2 | 1784 | |
e190d6b1 BW |
1785 | return 0; |
1786 | } | |
496a34c2 BW |
1787 | #else |
1788 | #define bfin_mac_suspend NULL | |
1789 | #define bfin_mac_resume NULL | |
1790 | #endif /* CONFIG_PM */ | |
e190d6b1 | 1791 | |
49f7315b | 1792 | static int bfin_mii_bus_probe(struct platform_device *pdev) |
080c8255 GY |
1793 | { |
1794 | struct mii_bus *miibus; | |
02460d08 SZ |
1795 | struct bfin_mii_bus_platform_data *mii_bus_pd; |
1796 | const unsigned short *pin_req; | |
080c8255 GY |
1797 | int rc, i; |
1798 | ||
02460d08 SZ |
1799 | mii_bus_pd = dev_get_platdata(&pdev->dev); |
1800 | if (!mii_bus_pd) { | |
1801 | dev_err(&pdev->dev, "No peripherals in platform data!\n"); | |
1802 | return -EINVAL; | |
1803 | } | |
1804 | ||
080c8255 GY |
1805 | /* |
1806 | * We are setting up a network card, | |
1807 | * so set the GPIO pins to Ethernet mode | |
1808 | */ | |
02460d08 | 1809 | pin_req = mii_bus_pd->mac_peripherals; |
c6dd5098 | 1810 | rc = peripheral_request_list(pin_req, KBUILD_MODNAME); |
080c8255 GY |
1811 | if (rc) { |
1812 | dev_err(&pdev->dev, "Requesting peripherals failed!\n"); | |
1813 | return rc; | |
1814 | } | |
1815 | ||
1816 | rc = -ENOMEM; | |
1817 | miibus = mdiobus_alloc(); | |
1818 | if (miibus == NULL) | |
1819 | goto out_err_alloc; | |
1820 | miibus->read = bfin_mdiobus_read; | |
1821 | miibus->write = bfin_mdiobus_write; | |
080c8255 GY |
1822 | |
1823 | miibus->parent = &pdev->dev; | |
1824 | miibus->name = "bfin_mii_bus"; | |
02460d08 SZ |
1825 | miibus->phy_mask = mii_bus_pd->phy_mask; |
1826 | ||
75432fd2 FF |
1827 | snprintf(miibus->id, MII_BUS_ID_SIZE, "%s-%x", |
1828 | pdev->name, pdev->id); | |
080c8255 | 1829 | |
02460d08 SZ |
1830 | rc = clamp(mii_bus_pd->phydev_number, 0, PHY_MAX_ADDR); |
1831 | if (rc != mii_bus_pd->phydev_number) | |
1832 | dev_err(&pdev->dev, "Invalid number (%i) of phydevs\n", | |
1833 | mii_bus_pd->phydev_number); | |
1834 | for (i = 0; i < rc; ++i) { | |
1835 | unsigned short phyaddr = mii_bus_pd->phydev_data[i].addr; | |
1836 | if (phyaddr < PHY_MAX_ADDR) | |
1837 | miibus->irq[phyaddr] = mii_bus_pd->phydev_data[i].irq; | |
1838 | else | |
1839 | dev_err(&pdev->dev, | |
1840 | "Invalid PHY address %i for phydev %i\n", | |
1841 | phyaddr, i); | |
1842 | } | |
1843 | ||
080c8255 GY |
1844 | rc = mdiobus_register(miibus); |
1845 | if (rc) { | |
1846 | dev_err(&pdev->dev, "Cannot register MDIO bus!\n"); | |
fdffd2e8 | 1847 | goto out_err_irq_alloc; |
080c8255 GY |
1848 | } |
1849 | ||
1850 | platform_set_drvdata(pdev, miibus); | |
1851 | return 0; | |
1852 | ||
02460d08 | 1853 | out_err_irq_alloc: |
080c8255 GY |
1854 | mdiobus_free(miibus); |
1855 | out_err_alloc: | |
1856 | peripheral_free_list(pin_req); | |
1857 | ||
1858 | return rc; | |
1859 | } | |
1860 | ||
49f7315b | 1861 | static int bfin_mii_bus_remove(struct platform_device *pdev) |
080c8255 GY |
1862 | { |
1863 | struct mii_bus *miibus = platform_get_drvdata(pdev); | |
02460d08 SZ |
1864 | struct bfin_mii_bus_platform_data *mii_bus_pd = |
1865 | dev_get_platdata(&pdev->dev); | |
1866 | ||
080c8255 GY |
1867 | mdiobus_unregister(miibus); |
1868 | mdiobus_free(miibus); | |
02460d08 SZ |
1869 | peripheral_free_list(mii_bus_pd->mac_peripherals); |
1870 | ||
080c8255 GY |
1871 | return 0; |
1872 | } | |
1873 | ||
1874 | static struct platform_driver bfin_mii_bus_driver = { | |
1875 | .probe = bfin_mii_bus_probe, | |
49f7315b | 1876 | .remove = bfin_mii_bus_remove, |
080c8255 GY |
1877 | .driver = { |
1878 | .name = "bfin_mii_bus", | |
080c8255 GY |
1879 | }, |
1880 | }; | |
1881 | ||
e190d6b1 BW |
1882 | static struct platform_driver bfin_mac_driver = { |
1883 | .probe = bfin_mac_probe, | |
49f7315b | 1884 | .remove = bfin_mac_remove, |
e190d6b1 BW |
1885 | .resume = bfin_mac_resume, |
1886 | .suspend = bfin_mac_suspend, | |
1887 | .driver = { | |
c6dd5098 | 1888 | .name = KBUILD_MODNAME, |
72abb461 | 1889 | }, |
e190d6b1 BW |
1890 | }; |
1891 | ||
36b9ddd5 TR |
1892 | static struct platform_driver * const drivers[] = { |
1893 | &bfin_mii_bus_driver, | |
1894 | &bfin_mac_driver, | |
1895 | }; | |
1896 | ||
e190d6b1 BW |
1897 | static int __init bfin_mac_init(void) |
1898 | { | |
36b9ddd5 | 1899 | return platform_register_drivers(drivers, ARRAY_SIZE(drivers)); |
e190d6b1 BW |
1900 | } |
1901 | ||
1902 | module_init(bfin_mac_init); | |
1903 | ||
1904 | static void __exit bfin_mac_cleanup(void) | |
1905 | { | |
36b9ddd5 | 1906 | platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); |
e190d6b1 BW |
1907 | } |
1908 | ||
1909 | module_exit(bfin_mac_cleanup); | |
72abb461 | 1910 |