Commit | Line | Data |
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dd4544f0 RM |
1 | /* |
2 | * Driver for (BCM4706)? GBit MAC core on BCMA bus. | |
3 | * | |
4 | * Copyright (C) 2012 Rafał Miłecki <zajec5@gmail.com> | |
5 | * | |
6 | * Licensed under the GNU/GPL. See COPYING for details. | |
7 | */ | |
8 | ||
9 | #include "bgmac.h" | |
10 | ||
11 | #include <linux/kernel.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/delay.h> | |
14 | #include <linux/etherdevice.h> | |
15 | #include <linux/mii.h> | |
11e5e76e | 16 | #include <linux/phy.h> |
dd4544f0 RM |
17 | #include <linux/interrupt.h> |
18 | #include <linux/dma-mapping.h> | |
edb15d83 | 19 | #include <bcm47xx_nvram.h> |
dd4544f0 RM |
20 | |
21 | static const struct bcma_device_id bgmac_bcma_tbl[] = { | |
22 | BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_4706_MAC_GBIT, BCMA_ANY_REV, BCMA_ANY_CLASS), | |
23 | BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_MAC_GBIT, BCMA_ANY_REV, BCMA_ANY_CLASS), | |
24 | BCMA_CORETABLE_END | |
25 | }; | |
26 | MODULE_DEVICE_TABLE(bcma, bgmac_bcma_tbl); | |
27 | ||
28 | static bool bgmac_wait_value(struct bcma_device *core, u16 reg, u32 mask, | |
29 | u32 value, int timeout) | |
30 | { | |
31 | u32 val; | |
32 | int i; | |
33 | ||
34 | for (i = 0; i < timeout / 10; i++) { | |
35 | val = bcma_read32(core, reg); | |
36 | if ((val & mask) == value) | |
37 | return true; | |
38 | udelay(10); | |
39 | } | |
40 | pr_err("Timeout waiting for reg 0x%X\n", reg); | |
41 | return false; | |
42 | } | |
43 | ||
44 | /************************************************** | |
45 | * DMA | |
46 | **************************************************/ | |
47 | ||
48 | static void bgmac_dma_tx_reset(struct bgmac *bgmac, struct bgmac_dma_ring *ring) | |
49 | { | |
50 | u32 val; | |
51 | int i; | |
52 | ||
53 | if (!ring->mmio_base) | |
54 | return; | |
55 | ||
56 | /* Suspend DMA TX ring first. | |
57 | * bgmac_wait_value doesn't support waiting for any of few values, so | |
58 | * implement whole loop here. | |
59 | */ | |
60 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL, | |
61 | BGMAC_DMA_TX_SUSPEND); | |
62 | for (i = 0; i < 10000 / 10; i++) { | |
63 | val = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS); | |
64 | val &= BGMAC_DMA_TX_STAT; | |
65 | if (val == BGMAC_DMA_TX_STAT_DISABLED || | |
66 | val == BGMAC_DMA_TX_STAT_IDLEWAIT || | |
67 | val == BGMAC_DMA_TX_STAT_STOPPED) { | |
68 | i = 0; | |
69 | break; | |
70 | } | |
71 | udelay(10); | |
72 | } | |
73 | if (i) | |
74 | bgmac_err(bgmac, "Timeout suspending DMA TX ring 0x%X (BGMAC_DMA_TX_STAT: 0x%08X)\n", | |
75 | ring->mmio_base, val); | |
76 | ||
77 | /* Remove SUSPEND bit */ | |
78 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL, 0); | |
79 | if (!bgmac_wait_value(bgmac->core, | |
80 | ring->mmio_base + BGMAC_DMA_TX_STATUS, | |
81 | BGMAC_DMA_TX_STAT, BGMAC_DMA_TX_STAT_DISABLED, | |
82 | 10000)) { | |
83 | bgmac_warn(bgmac, "DMA TX ring 0x%X wasn't disabled on time, waiting additional 300us\n", | |
84 | ring->mmio_base); | |
85 | udelay(300); | |
86 | val = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS); | |
87 | if ((val & BGMAC_DMA_TX_STAT) != BGMAC_DMA_TX_STAT_DISABLED) | |
88 | bgmac_err(bgmac, "Reset of DMA TX ring 0x%X failed\n", | |
89 | ring->mmio_base); | |
90 | } | |
91 | } | |
92 | ||
93 | static void bgmac_dma_tx_enable(struct bgmac *bgmac, | |
94 | struct bgmac_dma_ring *ring) | |
95 | { | |
96 | u32 ctl; | |
97 | ||
98 | ctl = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL); | |
99 | ctl |= BGMAC_DMA_TX_ENABLE; | |
100 | ctl |= BGMAC_DMA_TX_PARITY_DISABLE; | |
101 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_CTL, ctl); | |
102 | } | |
103 | ||
104 | static netdev_tx_t bgmac_dma_tx_add(struct bgmac *bgmac, | |
105 | struct bgmac_dma_ring *ring, | |
106 | struct sk_buff *skb) | |
107 | { | |
108 | struct device *dma_dev = bgmac->core->dma_dev; | |
109 | struct net_device *net_dev = bgmac->net_dev; | |
110 | struct bgmac_dma_desc *dma_desc; | |
111 | struct bgmac_slot_info *slot; | |
112 | u32 ctl0, ctl1; | |
113 | int free_slots; | |
114 | ||
115 | if (skb->len > BGMAC_DESC_CTL1_LEN) { | |
116 | bgmac_err(bgmac, "Too long skb (%d)\n", skb->len); | |
117 | goto err_stop_drop; | |
118 | } | |
119 | ||
120 | if (ring->start <= ring->end) | |
121 | free_slots = ring->start - ring->end + BGMAC_TX_RING_SLOTS; | |
122 | else | |
123 | free_slots = ring->start - ring->end; | |
124 | if (free_slots == 1) { | |
125 | bgmac_err(bgmac, "TX ring is full, queue should be stopped!\n"); | |
126 | netif_stop_queue(net_dev); | |
127 | return NETDEV_TX_BUSY; | |
128 | } | |
129 | ||
130 | slot = &ring->slots[ring->end]; | |
131 | slot->skb = skb; | |
132 | slot->dma_addr = dma_map_single(dma_dev, skb->data, skb->len, | |
133 | DMA_TO_DEVICE); | |
134 | if (dma_mapping_error(dma_dev, slot->dma_addr)) { | |
135 | bgmac_err(bgmac, "Mapping error of skb on ring 0x%X\n", | |
136 | ring->mmio_base); | |
137 | goto err_stop_drop; | |
138 | } | |
139 | ||
140 | ctl0 = BGMAC_DESC_CTL0_IOC | BGMAC_DESC_CTL0_SOF | BGMAC_DESC_CTL0_EOF; | |
141 | if (ring->end == ring->num_slots - 1) | |
142 | ctl0 |= BGMAC_DESC_CTL0_EOT; | |
143 | ctl1 = skb->len & BGMAC_DESC_CTL1_LEN; | |
144 | ||
145 | dma_desc = ring->cpu_base; | |
146 | dma_desc += ring->end; | |
147 | dma_desc->addr_low = cpu_to_le32(lower_32_bits(slot->dma_addr)); | |
148 | dma_desc->addr_high = cpu_to_le32(upper_32_bits(slot->dma_addr)); | |
149 | dma_desc->ctl0 = cpu_to_le32(ctl0); | |
150 | dma_desc->ctl1 = cpu_to_le32(ctl1); | |
151 | ||
49a467b4 HM |
152 | netdev_sent_queue(net_dev, skb->len); |
153 | ||
dd4544f0 RM |
154 | wmb(); |
155 | ||
156 | /* Increase ring->end to point empty slot. We tell hardware the first | |
157 | * slot it should *not* read. | |
158 | */ | |
159 | if (++ring->end >= BGMAC_TX_RING_SLOTS) | |
160 | ring->end = 0; | |
161 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_INDEX, | |
9900303e | 162 | ring->index_base + |
dd4544f0 RM |
163 | ring->end * sizeof(struct bgmac_dma_desc)); |
164 | ||
165 | /* Always keep one slot free to allow detecting bugged calls. */ | |
166 | if (--free_slots == 1) | |
167 | netif_stop_queue(net_dev); | |
168 | ||
169 | return NETDEV_TX_OK; | |
170 | ||
171 | err_stop_drop: | |
172 | netif_stop_queue(net_dev); | |
173 | dev_kfree_skb(skb); | |
174 | return NETDEV_TX_OK; | |
175 | } | |
176 | ||
177 | /* Free transmitted packets */ | |
178 | static void bgmac_dma_tx_free(struct bgmac *bgmac, struct bgmac_dma_ring *ring) | |
179 | { | |
180 | struct device *dma_dev = bgmac->core->dma_dev; | |
181 | int empty_slot; | |
182 | bool freed = false; | |
49a467b4 | 183 | unsigned bytes_compl = 0, pkts_compl = 0; |
dd4544f0 RM |
184 | |
185 | /* The last slot that hardware didn't consume yet */ | |
186 | empty_slot = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS); | |
187 | empty_slot &= BGMAC_DMA_TX_STATDPTR; | |
9900303e RM |
188 | empty_slot -= ring->index_base; |
189 | empty_slot &= BGMAC_DMA_TX_STATDPTR; | |
dd4544f0 RM |
190 | empty_slot /= sizeof(struct bgmac_dma_desc); |
191 | ||
192 | while (ring->start != empty_slot) { | |
193 | struct bgmac_slot_info *slot = &ring->slots[ring->start]; | |
194 | ||
195 | if (slot->skb) { | |
196 | /* Unmap no longer used buffer */ | |
197 | dma_unmap_single(dma_dev, slot->dma_addr, | |
198 | slot->skb->len, DMA_TO_DEVICE); | |
199 | slot->dma_addr = 0; | |
200 | ||
49a467b4 HM |
201 | bytes_compl += slot->skb->len; |
202 | pkts_compl++; | |
203 | ||
dd4544f0 RM |
204 | /* Free memory! :) */ |
205 | dev_kfree_skb(slot->skb); | |
206 | slot->skb = NULL; | |
207 | } else { | |
208 | bgmac_err(bgmac, "Hardware reported transmission for empty TX ring slot %d! End of ring: %d\n", | |
209 | ring->start, ring->end); | |
210 | } | |
211 | ||
212 | if (++ring->start >= BGMAC_TX_RING_SLOTS) | |
213 | ring->start = 0; | |
214 | freed = true; | |
215 | } | |
216 | ||
49a467b4 HM |
217 | netdev_completed_queue(bgmac->net_dev, pkts_compl, bytes_compl); |
218 | ||
dd4544f0 RM |
219 | if (freed && netif_queue_stopped(bgmac->net_dev)) |
220 | netif_wake_queue(bgmac->net_dev); | |
221 | } | |
222 | ||
223 | static void bgmac_dma_rx_reset(struct bgmac *bgmac, struct bgmac_dma_ring *ring) | |
224 | { | |
225 | if (!ring->mmio_base) | |
226 | return; | |
227 | ||
228 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_CTL, 0); | |
229 | if (!bgmac_wait_value(bgmac->core, | |
230 | ring->mmio_base + BGMAC_DMA_RX_STATUS, | |
231 | BGMAC_DMA_RX_STAT, BGMAC_DMA_RX_STAT_DISABLED, | |
232 | 10000)) | |
233 | bgmac_err(bgmac, "Reset of ring 0x%X RX failed\n", | |
234 | ring->mmio_base); | |
235 | } | |
236 | ||
237 | static void bgmac_dma_rx_enable(struct bgmac *bgmac, | |
238 | struct bgmac_dma_ring *ring) | |
239 | { | |
240 | u32 ctl; | |
241 | ||
242 | ctl = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_RX_CTL); | |
243 | ctl &= BGMAC_DMA_RX_ADDREXT_MASK; | |
244 | ctl |= BGMAC_DMA_RX_ENABLE; | |
245 | ctl |= BGMAC_DMA_RX_PARITY_DISABLE; | |
246 | ctl |= BGMAC_DMA_RX_OVERFLOW_CONT; | |
247 | ctl |= BGMAC_RX_FRAME_OFFSET << BGMAC_DMA_RX_FRAME_OFFSET_SHIFT; | |
248 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_CTL, ctl); | |
249 | } | |
250 | ||
251 | static int bgmac_dma_rx_skb_for_slot(struct bgmac *bgmac, | |
252 | struct bgmac_slot_info *slot) | |
253 | { | |
254 | struct device *dma_dev = bgmac->core->dma_dev; | |
b757a62e NH |
255 | struct sk_buff *skb; |
256 | dma_addr_t dma_addr; | |
dd4544f0 RM |
257 | struct bgmac_rx_header *rx; |
258 | ||
259 | /* Alloc skb */ | |
b757a62e NH |
260 | skb = netdev_alloc_skb(bgmac->net_dev, BGMAC_RX_BUF_SIZE); |
261 | if (!skb) | |
dd4544f0 | 262 | return -ENOMEM; |
dd4544f0 RM |
263 | |
264 | /* Poison - if everything goes fine, hardware will overwrite it */ | |
b757a62e | 265 | rx = (struct bgmac_rx_header *)skb->data; |
dd4544f0 RM |
266 | rx->len = cpu_to_le16(0xdead); |
267 | rx->flags = cpu_to_le16(0xbeef); | |
268 | ||
269 | /* Map skb for the DMA */ | |
b757a62e NH |
270 | dma_addr = dma_map_single(dma_dev, skb->data, |
271 | BGMAC_RX_BUF_SIZE, DMA_FROM_DEVICE); | |
272 | if (dma_mapping_error(dma_dev, dma_addr)) { | |
dd4544f0 | 273 | bgmac_err(bgmac, "DMA mapping error\n"); |
b757a62e | 274 | dev_kfree_skb(skb); |
dd4544f0 RM |
275 | return -ENOMEM; |
276 | } | |
b757a62e NH |
277 | |
278 | /* Update the slot */ | |
279 | slot->skb = skb; | |
280 | slot->dma_addr = dma_addr; | |
281 | ||
dd4544f0 RM |
282 | if (slot->dma_addr & 0xC0000000) |
283 | bgmac_warn(bgmac, "DMA address using 0xC0000000 bit(s), it may need translation trick\n"); | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
d549c76b RM |
288 | static void bgmac_dma_rx_setup_desc(struct bgmac *bgmac, |
289 | struct bgmac_dma_ring *ring, int desc_idx) | |
290 | { | |
291 | struct bgmac_dma_desc *dma_desc = ring->cpu_base + desc_idx; | |
292 | u32 ctl0 = 0, ctl1 = 0; | |
293 | ||
294 | if (desc_idx == ring->num_slots - 1) | |
295 | ctl0 |= BGMAC_DESC_CTL0_EOT; | |
296 | ctl1 |= BGMAC_RX_BUF_SIZE & BGMAC_DESC_CTL1_LEN; | |
297 | /* Is there any BGMAC device that requires extension? */ | |
298 | /* ctl1 |= (addrext << B43_DMA64_DCTL1_ADDREXT_SHIFT) & | |
299 | * B43_DMA64_DCTL1_ADDREXT_MASK; | |
300 | */ | |
301 | ||
302 | dma_desc->addr_low = cpu_to_le32(lower_32_bits(ring->slots[desc_idx].dma_addr)); | |
303 | dma_desc->addr_high = cpu_to_le32(upper_32_bits(ring->slots[desc_idx].dma_addr)); | |
304 | dma_desc->ctl0 = cpu_to_le32(ctl0); | |
305 | dma_desc->ctl1 = cpu_to_le32(ctl1); | |
306 | } | |
307 | ||
dd4544f0 RM |
308 | static int bgmac_dma_rx_read(struct bgmac *bgmac, struct bgmac_dma_ring *ring, |
309 | int weight) | |
310 | { | |
311 | u32 end_slot; | |
312 | int handled = 0; | |
313 | ||
314 | end_slot = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_RX_STATUS); | |
315 | end_slot &= BGMAC_DMA_RX_STATDPTR; | |
9900303e RM |
316 | end_slot -= ring->index_base; |
317 | end_slot &= BGMAC_DMA_RX_STATDPTR; | |
dd4544f0 RM |
318 | end_slot /= sizeof(struct bgmac_dma_desc); |
319 | ||
320 | ring->end = end_slot; | |
321 | ||
322 | while (ring->start != ring->end) { | |
323 | struct device *dma_dev = bgmac->core->dma_dev; | |
324 | struct bgmac_slot_info *slot = &ring->slots[ring->start]; | |
325 | struct sk_buff *skb = slot->skb; | |
dd4544f0 RM |
326 | struct bgmac_rx_header *rx; |
327 | u16 len, flags; | |
328 | ||
329 | /* Unmap buffer to make it accessible to the CPU */ | |
330 | dma_sync_single_for_cpu(dma_dev, slot->dma_addr, | |
331 | BGMAC_RX_BUF_SIZE, DMA_FROM_DEVICE); | |
332 | ||
333 | /* Get info from the header */ | |
334 | rx = (struct bgmac_rx_header *)skb->data; | |
335 | len = le16_to_cpu(rx->len); | |
336 | flags = le16_to_cpu(rx->flags); | |
337 | ||
92b9ccd3 RM |
338 | do { |
339 | dma_addr_t old_dma_addr = slot->dma_addr; | |
340 | int err; | |
341 | ||
342 | /* Check for poison and drop or pass the packet */ | |
343 | if (len == 0xdead && flags == 0xbeef) { | |
344 | bgmac_err(bgmac, "Found poisoned packet at slot %d, DMA issue!\n", | |
345 | ring->start); | |
346 | dma_sync_single_for_device(dma_dev, | |
347 | slot->dma_addr, | |
348 | BGMAC_RX_BUF_SIZE, | |
349 | DMA_FROM_DEVICE); | |
350 | break; | |
351 | } | |
352 | ||
02e71127 HM |
353 | /* Omit CRC. */ |
354 | len -= ETH_FCS_LEN; | |
355 | ||
92b9ccd3 RM |
356 | /* Prepare new skb as replacement */ |
357 | err = bgmac_dma_rx_skb_for_slot(bgmac, slot); | |
358 | if (err) { | |
359 | /* Poison the old skb */ | |
360 | rx->len = cpu_to_le16(0xdead); | |
361 | rx->flags = cpu_to_le16(0xbeef); | |
362 | ||
363 | dma_sync_single_for_device(dma_dev, | |
364 | slot->dma_addr, | |
365 | BGMAC_RX_BUF_SIZE, | |
366 | DMA_FROM_DEVICE); | |
367 | break; | |
dd4544f0 | 368 | } |
92b9ccd3 | 369 | bgmac_dma_rx_setup_desc(bgmac, ring, ring->start); |
dd4544f0 | 370 | |
92b9ccd3 RM |
371 | /* Unmap old skb, we'll pass it to the netfif */ |
372 | dma_unmap_single(dma_dev, old_dma_addr, | |
373 | BGMAC_RX_BUF_SIZE, DMA_FROM_DEVICE); | |
374 | ||
375 | skb_put(skb, BGMAC_RX_FRAME_OFFSET + len); | |
376 | skb_pull(skb, BGMAC_RX_FRAME_OFFSET); | |
dd4544f0 | 377 | |
92b9ccd3 RM |
378 | skb_checksum_none_assert(skb); |
379 | skb->protocol = eth_type_trans(skb, bgmac->net_dev); | |
380 | netif_receive_skb(skb); | |
381 | handled++; | |
382 | } while (0); | |
dd4544f0 RM |
383 | |
384 | if (++ring->start >= BGMAC_RX_RING_SLOTS) | |
385 | ring->start = 0; | |
386 | ||
387 | if (handled >= weight) /* Should never be greater */ | |
388 | break; | |
389 | } | |
390 | ||
391 | return handled; | |
392 | } | |
393 | ||
394 | /* Does ring support unaligned addressing? */ | |
395 | static bool bgmac_dma_unaligned(struct bgmac *bgmac, | |
396 | struct bgmac_dma_ring *ring, | |
397 | enum bgmac_dma_ring_type ring_type) | |
398 | { | |
399 | switch (ring_type) { | |
400 | case BGMAC_DMA_RING_TX: | |
401 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO, | |
402 | 0xff0); | |
403 | if (bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO)) | |
404 | return true; | |
405 | break; | |
406 | case BGMAC_DMA_RING_RX: | |
407 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO, | |
408 | 0xff0); | |
409 | if (bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO)) | |
410 | return true; | |
411 | break; | |
412 | } | |
413 | return false; | |
414 | } | |
415 | ||
416 | static void bgmac_dma_ring_free(struct bgmac *bgmac, | |
417 | struct bgmac_dma_ring *ring) | |
418 | { | |
419 | struct device *dma_dev = bgmac->core->dma_dev; | |
420 | struct bgmac_slot_info *slot; | |
421 | int size; | |
422 | int i; | |
423 | ||
424 | for (i = 0; i < ring->num_slots; i++) { | |
425 | slot = &ring->slots[i]; | |
426 | if (slot->skb) { | |
427 | if (slot->dma_addr) | |
428 | dma_unmap_single(dma_dev, slot->dma_addr, | |
429 | slot->skb->len, DMA_TO_DEVICE); | |
430 | dev_kfree_skb(slot->skb); | |
431 | } | |
432 | } | |
433 | ||
434 | if (ring->cpu_base) { | |
435 | /* Free ring of descriptors */ | |
436 | size = ring->num_slots * sizeof(struct bgmac_dma_desc); | |
437 | dma_free_coherent(dma_dev, size, ring->cpu_base, | |
438 | ring->dma_base); | |
439 | } | |
440 | } | |
441 | ||
442 | static void bgmac_dma_free(struct bgmac *bgmac) | |
443 | { | |
444 | int i; | |
445 | ||
446 | for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) | |
447 | bgmac_dma_ring_free(bgmac, &bgmac->tx_ring[i]); | |
448 | for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) | |
449 | bgmac_dma_ring_free(bgmac, &bgmac->rx_ring[i]); | |
450 | } | |
451 | ||
452 | static int bgmac_dma_alloc(struct bgmac *bgmac) | |
453 | { | |
454 | struct device *dma_dev = bgmac->core->dma_dev; | |
455 | struct bgmac_dma_ring *ring; | |
456 | static const u16 ring_base[] = { BGMAC_DMA_BASE0, BGMAC_DMA_BASE1, | |
457 | BGMAC_DMA_BASE2, BGMAC_DMA_BASE3, }; | |
458 | int size; /* ring size: different for Tx and Rx */ | |
459 | int err; | |
460 | int i; | |
461 | ||
462 | BUILD_BUG_ON(BGMAC_MAX_TX_RINGS > ARRAY_SIZE(ring_base)); | |
463 | BUILD_BUG_ON(BGMAC_MAX_RX_RINGS > ARRAY_SIZE(ring_base)); | |
464 | ||
465 | if (!(bcma_aread32(bgmac->core, BCMA_IOST) & BCMA_IOST_DMA64)) { | |
466 | bgmac_err(bgmac, "Core does not report 64-bit DMA\n"); | |
467 | return -ENOTSUPP; | |
468 | } | |
469 | ||
470 | for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) { | |
471 | ring = &bgmac->tx_ring[i]; | |
472 | ring->num_slots = BGMAC_TX_RING_SLOTS; | |
473 | ring->mmio_base = ring_base[i]; | |
dd4544f0 RM |
474 | |
475 | /* Alloc ring of descriptors */ | |
476 | size = ring->num_slots * sizeof(struct bgmac_dma_desc); | |
477 | ring->cpu_base = dma_zalloc_coherent(dma_dev, size, | |
478 | &ring->dma_base, | |
479 | GFP_KERNEL); | |
480 | if (!ring->cpu_base) { | |
481 | bgmac_err(bgmac, "Allocation of TX ring 0x%X failed\n", | |
482 | ring->mmio_base); | |
483 | goto err_dma_free; | |
484 | } | |
485 | if (ring->dma_base & 0xC0000000) | |
486 | bgmac_warn(bgmac, "DMA address using 0xC0000000 bit(s), it may need translation trick\n"); | |
487 | ||
9900303e RM |
488 | ring->unaligned = bgmac_dma_unaligned(bgmac, ring, |
489 | BGMAC_DMA_RING_TX); | |
490 | if (ring->unaligned) | |
491 | ring->index_base = lower_32_bits(ring->dma_base); | |
492 | else | |
493 | ring->index_base = 0; | |
494 | ||
dd4544f0 RM |
495 | /* No need to alloc TX slots yet */ |
496 | } | |
497 | ||
498 | for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) { | |
70a737b7 RM |
499 | int j; |
500 | ||
dd4544f0 RM |
501 | ring = &bgmac->rx_ring[i]; |
502 | ring->num_slots = BGMAC_RX_RING_SLOTS; | |
503 | ring->mmio_base = ring_base[i]; | |
dd4544f0 RM |
504 | |
505 | /* Alloc ring of descriptors */ | |
506 | size = ring->num_slots * sizeof(struct bgmac_dma_desc); | |
507 | ring->cpu_base = dma_zalloc_coherent(dma_dev, size, | |
508 | &ring->dma_base, | |
509 | GFP_KERNEL); | |
510 | if (!ring->cpu_base) { | |
511 | bgmac_err(bgmac, "Allocation of RX ring 0x%X failed\n", | |
512 | ring->mmio_base); | |
513 | err = -ENOMEM; | |
514 | goto err_dma_free; | |
515 | } | |
516 | if (ring->dma_base & 0xC0000000) | |
517 | bgmac_warn(bgmac, "DMA address using 0xC0000000 bit(s), it may need translation trick\n"); | |
518 | ||
9900303e RM |
519 | ring->unaligned = bgmac_dma_unaligned(bgmac, ring, |
520 | BGMAC_DMA_RING_RX); | |
521 | if (ring->unaligned) | |
522 | ring->index_base = lower_32_bits(ring->dma_base); | |
523 | else | |
524 | ring->index_base = 0; | |
525 | ||
dd4544f0 | 526 | /* Alloc RX slots */ |
70a737b7 RM |
527 | for (j = 0; j < ring->num_slots; j++) { |
528 | err = bgmac_dma_rx_skb_for_slot(bgmac, &ring->slots[j]); | |
dd4544f0 RM |
529 | if (err) { |
530 | bgmac_err(bgmac, "Can't allocate skb for slot in RX ring\n"); | |
531 | goto err_dma_free; | |
532 | } | |
533 | } | |
534 | } | |
535 | ||
536 | return 0; | |
537 | ||
538 | err_dma_free: | |
539 | bgmac_dma_free(bgmac); | |
540 | return -ENOMEM; | |
541 | } | |
542 | ||
543 | static void bgmac_dma_init(struct bgmac *bgmac) | |
544 | { | |
545 | struct bgmac_dma_ring *ring; | |
dd4544f0 RM |
546 | int i; |
547 | ||
548 | for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) { | |
549 | ring = &bgmac->tx_ring[i]; | |
550 | ||
9900303e RM |
551 | if (!ring->unaligned) |
552 | bgmac_dma_tx_enable(bgmac, ring); | |
dd4544f0 RM |
553 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO, |
554 | lower_32_bits(ring->dma_base)); | |
555 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGHI, | |
556 | upper_32_bits(ring->dma_base)); | |
9900303e RM |
557 | if (ring->unaligned) |
558 | bgmac_dma_tx_enable(bgmac, ring); | |
dd4544f0 RM |
559 | |
560 | ring->start = 0; | |
561 | ring->end = 0; /* Points the slot that should *not* be read */ | |
562 | } | |
563 | ||
564 | for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) { | |
70a737b7 RM |
565 | int j; |
566 | ||
dd4544f0 RM |
567 | ring = &bgmac->rx_ring[i]; |
568 | ||
9900303e RM |
569 | if (!ring->unaligned) |
570 | bgmac_dma_rx_enable(bgmac, ring); | |
dd4544f0 RM |
571 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO, |
572 | lower_32_bits(ring->dma_base)); | |
573 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGHI, | |
574 | upper_32_bits(ring->dma_base)); | |
9900303e RM |
575 | if (ring->unaligned) |
576 | bgmac_dma_rx_enable(bgmac, ring); | |
dd4544f0 | 577 | |
d549c76b RM |
578 | for (j = 0; j < ring->num_slots; j++) |
579 | bgmac_dma_rx_setup_desc(bgmac, ring, j); | |
dd4544f0 RM |
580 | |
581 | bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_INDEX, | |
9900303e | 582 | ring->index_base + |
dd4544f0 RM |
583 | ring->num_slots * sizeof(struct bgmac_dma_desc)); |
584 | ||
585 | ring->start = 0; | |
586 | ring->end = 0; | |
587 | } | |
588 | } | |
589 | ||
590 | /************************************************** | |
591 | * PHY ops | |
592 | **************************************************/ | |
593 | ||
217a55a3 | 594 | static u16 bgmac_phy_read(struct bgmac *bgmac, u8 phyaddr, u8 reg) |
dd4544f0 RM |
595 | { |
596 | struct bcma_device *core; | |
597 | u16 phy_access_addr; | |
598 | u16 phy_ctl_addr; | |
599 | u32 tmp; | |
600 | ||
601 | BUILD_BUG_ON(BGMAC_PA_DATA_MASK != BCMA_GMAC_CMN_PA_DATA_MASK); | |
602 | BUILD_BUG_ON(BGMAC_PA_ADDR_MASK != BCMA_GMAC_CMN_PA_ADDR_MASK); | |
603 | BUILD_BUG_ON(BGMAC_PA_ADDR_SHIFT != BCMA_GMAC_CMN_PA_ADDR_SHIFT); | |
604 | BUILD_BUG_ON(BGMAC_PA_REG_MASK != BCMA_GMAC_CMN_PA_REG_MASK); | |
605 | BUILD_BUG_ON(BGMAC_PA_REG_SHIFT != BCMA_GMAC_CMN_PA_REG_SHIFT); | |
606 | BUILD_BUG_ON(BGMAC_PA_WRITE != BCMA_GMAC_CMN_PA_WRITE); | |
607 | BUILD_BUG_ON(BGMAC_PA_START != BCMA_GMAC_CMN_PA_START); | |
608 | BUILD_BUG_ON(BGMAC_PC_EPA_MASK != BCMA_GMAC_CMN_PC_EPA_MASK); | |
609 | BUILD_BUG_ON(BGMAC_PC_MCT_MASK != BCMA_GMAC_CMN_PC_MCT_MASK); | |
610 | BUILD_BUG_ON(BGMAC_PC_MCT_SHIFT != BCMA_GMAC_CMN_PC_MCT_SHIFT); | |
611 | BUILD_BUG_ON(BGMAC_PC_MTE != BCMA_GMAC_CMN_PC_MTE); | |
612 | ||
613 | if (bgmac->core->id.id == BCMA_CORE_4706_MAC_GBIT) { | |
614 | core = bgmac->core->bus->drv_gmac_cmn.core; | |
615 | phy_access_addr = BCMA_GMAC_CMN_PHY_ACCESS; | |
616 | phy_ctl_addr = BCMA_GMAC_CMN_PHY_CTL; | |
617 | } else { | |
618 | core = bgmac->core; | |
619 | phy_access_addr = BGMAC_PHY_ACCESS; | |
620 | phy_ctl_addr = BGMAC_PHY_CNTL; | |
621 | } | |
622 | ||
623 | tmp = bcma_read32(core, phy_ctl_addr); | |
624 | tmp &= ~BGMAC_PC_EPA_MASK; | |
625 | tmp |= phyaddr; | |
626 | bcma_write32(core, phy_ctl_addr, tmp); | |
627 | ||
628 | tmp = BGMAC_PA_START; | |
629 | tmp |= phyaddr << BGMAC_PA_ADDR_SHIFT; | |
630 | tmp |= reg << BGMAC_PA_REG_SHIFT; | |
631 | bcma_write32(core, phy_access_addr, tmp); | |
632 | ||
633 | if (!bgmac_wait_value(core, phy_access_addr, BGMAC_PA_START, 0, 1000)) { | |
634 | bgmac_err(bgmac, "Reading PHY %d register 0x%X failed\n", | |
635 | phyaddr, reg); | |
636 | return 0xffff; | |
637 | } | |
638 | ||
639 | return bcma_read32(core, phy_access_addr) & BGMAC_PA_DATA_MASK; | |
640 | } | |
641 | ||
642 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphywr */ | |
217a55a3 | 643 | static int bgmac_phy_write(struct bgmac *bgmac, u8 phyaddr, u8 reg, u16 value) |
dd4544f0 RM |
644 | { |
645 | struct bcma_device *core; | |
646 | u16 phy_access_addr; | |
647 | u16 phy_ctl_addr; | |
648 | u32 tmp; | |
649 | ||
650 | if (bgmac->core->id.id == BCMA_CORE_4706_MAC_GBIT) { | |
651 | core = bgmac->core->bus->drv_gmac_cmn.core; | |
652 | phy_access_addr = BCMA_GMAC_CMN_PHY_ACCESS; | |
653 | phy_ctl_addr = BCMA_GMAC_CMN_PHY_CTL; | |
654 | } else { | |
655 | core = bgmac->core; | |
656 | phy_access_addr = BGMAC_PHY_ACCESS; | |
657 | phy_ctl_addr = BGMAC_PHY_CNTL; | |
658 | } | |
659 | ||
660 | tmp = bcma_read32(core, phy_ctl_addr); | |
661 | tmp &= ~BGMAC_PC_EPA_MASK; | |
662 | tmp |= phyaddr; | |
663 | bcma_write32(core, phy_ctl_addr, tmp); | |
664 | ||
665 | bgmac_write(bgmac, BGMAC_INT_STATUS, BGMAC_IS_MDIO); | |
666 | if (bgmac_read(bgmac, BGMAC_INT_STATUS) & BGMAC_IS_MDIO) | |
667 | bgmac_warn(bgmac, "Error setting MDIO int\n"); | |
668 | ||
669 | tmp = BGMAC_PA_START; | |
670 | tmp |= BGMAC_PA_WRITE; | |
671 | tmp |= phyaddr << BGMAC_PA_ADDR_SHIFT; | |
672 | tmp |= reg << BGMAC_PA_REG_SHIFT; | |
673 | tmp |= value; | |
674 | bcma_write32(core, phy_access_addr, tmp); | |
675 | ||
217a55a3 | 676 | if (!bgmac_wait_value(core, phy_access_addr, BGMAC_PA_START, 0, 1000)) { |
dd4544f0 RM |
677 | bgmac_err(bgmac, "Writing to PHY %d register 0x%X failed\n", |
678 | phyaddr, reg); | |
217a55a3 RM |
679 | return -ETIMEDOUT; |
680 | } | |
681 | ||
682 | return 0; | |
dd4544f0 RM |
683 | } |
684 | ||
dd4544f0 RM |
685 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyinit */ |
686 | static void bgmac_phy_init(struct bgmac *bgmac) | |
687 | { | |
688 | struct bcma_chipinfo *ci = &bgmac->core->bus->chipinfo; | |
689 | struct bcma_drv_cc *cc = &bgmac->core->bus->drv_cc; | |
690 | u8 i; | |
691 | ||
692 | if (ci->id == BCMA_CHIP_ID_BCM5356) { | |
693 | for (i = 0; i < 5; i++) { | |
694 | bgmac_phy_write(bgmac, i, 0x1f, 0x008b); | |
695 | bgmac_phy_write(bgmac, i, 0x15, 0x0100); | |
696 | bgmac_phy_write(bgmac, i, 0x1f, 0x000f); | |
697 | bgmac_phy_write(bgmac, i, 0x12, 0x2aaa); | |
698 | bgmac_phy_write(bgmac, i, 0x1f, 0x000b); | |
699 | } | |
700 | } | |
701 | if ((ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg != 10) || | |
702 | (ci->id == BCMA_CHIP_ID_BCM4749 && ci->pkg != 10) || | |
703 | (ci->id == BCMA_CHIP_ID_BCM53572 && ci->pkg != 9)) { | |
704 | bcma_chipco_chipctl_maskset(cc, 2, ~0xc0000000, 0); | |
705 | bcma_chipco_chipctl_maskset(cc, 4, ~0x80000000, 0); | |
706 | for (i = 0; i < 5; i++) { | |
707 | bgmac_phy_write(bgmac, i, 0x1f, 0x000f); | |
708 | bgmac_phy_write(bgmac, i, 0x16, 0x5284); | |
709 | bgmac_phy_write(bgmac, i, 0x1f, 0x000b); | |
710 | bgmac_phy_write(bgmac, i, 0x17, 0x0010); | |
711 | bgmac_phy_write(bgmac, i, 0x1f, 0x000f); | |
712 | bgmac_phy_write(bgmac, i, 0x16, 0x5296); | |
713 | bgmac_phy_write(bgmac, i, 0x17, 0x1073); | |
714 | bgmac_phy_write(bgmac, i, 0x17, 0x9073); | |
715 | bgmac_phy_write(bgmac, i, 0x16, 0x52b6); | |
716 | bgmac_phy_write(bgmac, i, 0x17, 0x9273); | |
717 | bgmac_phy_write(bgmac, i, 0x1f, 0x000b); | |
718 | } | |
719 | } | |
720 | } | |
721 | ||
722 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyreset */ | |
723 | static void bgmac_phy_reset(struct bgmac *bgmac) | |
724 | { | |
725 | if (bgmac->phyaddr == BGMAC_PHY_NOREGS) | |
726 | return; | |
727 | ||
728 | bgmac_phy_write(bgmac, bgmac->phyaddr, BGMAC_PHY_CTL, | |
729 | BGMAC_PHY_CTL_RESET); | |
730 | udelay(100); | |
731 | if (bgmac_phy_read(bgmac, bgmac->phyaddr, BGMAC_PHY_CTL) & | |
732 | BGMAC_PHY_CTL_RESET) | |
733 | bgmac_err(bgmac, "PHY reset failed\n"); | |
734 | bgmac_phy_init(bgmac); | |
735 | } | |
736 | ||
737 | /************************************************** | |
738 | * Chip ops | |
739 | **************************************************/ | |
740 | ||
741 | /* TODO: can we just drop @force? Can we don't reset MAC at all if there is | |
742 | * nothing to change? Try if after stabilizng driver. | |
743 | */ | |
744 | static void bgmac_cmdcfg_maskset(struct bgmac *bgmac, u32 mask, u32 set, | |
745 | bool force) | |
746 | { | |
747 | u32 cmdcfg = bgmac_read(bgmac, BGMAC_CMDCFG); | |
748 | u32 new_val = (cmdcfg & mask) | set; | |
749 | ||
750 | bgmac_set(bgmac, BGMAC_CMDCFG, BGMAC_CMDCFG_SR); | |
751 | udelay(2); | |
752 | ||
753 | if (new_val != cmdcfg || force) | |
754 | bgmac_write(bgmac, BGMAC_CMDCFG, new_val); | |
755 | ||
756 | bgmac_mask(bgmac, BGMAC_CMDCFG, ~BGMAC_CMDCFG_SR); | |
757 | udelay(2); | |
758 | } | |
759 | ||
4e209001 HM |
760 | static void bgmac_write_mac_address(struct bgmac *bgmac, u8 *addr) |
761 | { | |
762 | u32 tmp; | |
763 | ||
764 | tmp = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]; | |
765 | bgmac_write(bgmac, BGMAC_MACADDR_HIGH, tmp); | |
766 | tmp = (addr[4] << 8) | addr[5]; | |
767 | bgmac_write(bgmac, BGMAC_MACADDR_LOW, tmp); | |
768 | } | |
769 | ||
c6edfe10 HM |
770 | static void bgmac_set_rx_mode(struct net_device *net_dev) |
771 | { | |
772 | struct bgmac *bgmac = netdev_priv(net_dev); | |
773 | ||
774 | if (net_dev->flags & IFF_PROMISC) | |
e9ba1039 | 775 | bgmac_cmdcfg_maskset(bgmac, ~0, BGMAC_CMDCFG_PROM, true); |
c6edfe10 | 776 | else |
e9ba1039 | 777 | bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_PROM, 0, true); |
c6edfe10 HM |
778 | } |
779 | ||
dd4544f0 RM |
780 | #if 0 /* We don't use that regs yet */ |
781 | static void bgmac_chip_stats_update(struct bgmac *bgmac) | |
782 | { | |
783 | int i; | |
784 | ||
785 | if (bgmac->core->id.id != BCMA_CORE_4706_MAC_GBIT) { | |
786 | for (i = 0; i < BGMAC_NUM_MIB_TX_REGS; i++) | |
787 | bgmac->mib_tx_regs[i] = | |
788 | bgmac_read(bgmac, | |
789 | BGMAC_TX_GOOD_OCTETS + (i * 4)); | |
790 | for (i = 0; i < BGMAC_NUM_MIB_RX_REGS; i++) | |
791 | bgmac->mib_rx_regs[i] = | |
792 | bgmac_read(bgmac, | |
793 | BGMAC_RX_GOOD_OCTETS + (i * 4)); | |
794 | } | |
795 | ||
796 | /* TODO: what else? how to handle BCM4706? Specs are needed */ | |
797 | } | |
798 | #endif | |
799 | ||
800 | static void bgmac_clear_mib(struct bgmac *bgmac) | |
801 | { | |
802 | int i; | |
803 | ||
804 | if (bgmac->core->id.id == BCMA_CORE_4706_MAC_GBIT) | |
805 | return; | |
806 | ||
807 | bgmac_set(bgmac, BGMAC_DEV_CTL, BGMAC_DC_MROR); | |
808 | for (i = 0; i < BGMAC_NUM_MIB_TX_REGS; i++) | |
809 | bgmac_read(bgmac, BGMAC_TX_GOOD_OCTETS + (i * 4)); | |
810 | for (i = 0; i < BGMAC_NUM_MIB_RX_REGS; i++) | |
811 | bgmac_read(bgmac, BGMAC_RX_GOOD_OCTETS + (i * 4)); | |
812 | } | |
813 | ||
814 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_speed */ | |
5824d2d1 | 815 | static void bgmac_mac_speed(struct bgmac *bgmac) |
dd4544f0 RM |
816 | { |
817 | u32 mask = ~(BGMAC_CMDCFG_ES_MASK | BGMAC_CMDCFG_HD); | |
818 | u32 set = 0; | |
819 | ||
5824d2d1 RM |
820 | switch (bgmac->mac_speed) { |
821 | case SPEED_10: | |
dd4544f0 | 822 | set |= BGMAC_CMDCFG_ES_10; |
5824d2d1 RM |
823 | break; |
824 | case SPEED_100: | |
dd4544f0 | 825 | set |= BGMAC_CMDCFG_ES_100; |
5824d2d1 RM |
826 | break; |
827 | case SPEED_1000: | |
dd4544f0 | 828 | set |= BGMAC_CMDCFG_ES_1000; |
5824d2d1 RM |
829 | break; |
830 | default: | |
831 | bgmac_err(bgmac, "Unsupported speed: %d\n", bgmac->mac_speed); | |
832 | } | |
833 | ||
834 | if (bgmac->mac_duplex == DUPLEX_HALF) | |
dd4544f0 | 835 | set |= BGMAC_CMDCFG_HD; |
5824d2d1 | 836 | |
dd4544f0 RM |
837 | bgmac_cmdcfg_maskset(bgmac, mask, set, true); |
838 | } | |
839 | ||
840 | static void bgmac_miiconfig(struct bgmac *bgmac) | |
841 | { | |
842 | u8 imode = (bgmac_read(bgmac, BGMAC_DEV_STATUS) & BGMAC_DS_MM_MASK) >> | |
843 | BGMAC_DS_MM_SHIFT; | |
844 | if (imode == 0 || imode == 1) { | |
5824d2d1 RM |
845 | bgmac->mac_speed = SPEED_100; |
846 | bgmac->mac_duplex = DUPLEX_FULL; | |
847 | bgmac_mac_speed(bgmac); | |
dd4544f0 RM |
848 | } |
849 | } | |
850 | ||
851 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipreset */ | |
852 | static void bgmac_chip_reset(struct bgmac *bgmac) | |
853 | { | |
854 | struct bcma_device *core = bgmac->core; | |
855 | struct bcma_bus *bus = core->bus; | |
856 | struct bcma_chipinfo *ci = &bus->chipinfo; | |
857 | u32 flags = 0; | |
858 | u32 iost; | |
859 | int i; | |
860 | ||
861 | if (bcma_core_is_enabled(core)) { | |
862 | if (!bgmac->stats_grabbed) { | |
863 | /* bgmac_chip_stats_update(bgmac); */ | |
864 | bgmac->stats_grabbed = true; | |
865 | } | |
866 | ||
867 | for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) | |
868 | bgmac_dma_tx_reset(bgmac, &bgmac->tx_ring[i]); | |
869 | ||
870 | bgmac_cmdcfg_maskset(bgmac, ~0, BGMAC_CMDCFG_ML, false); | |
871 | udelay(1); | |
872 | ||
873 | for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) | |
874 | bgmac_dma_rx_reset(bgmac, &bgmac->rx_ring[i]); | |
875 | ||
876 | /* TODO: Clear software multicast filter list */ | |
877 | } | |
878 | ||
879 | iost = bcma_aread32(core, BCMA_IOST); | |
880 | if ((ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg == 10) || | |
881 | (ci->id == BCMA_CHIP_ID_BCM4749 && ci->pkg == 10) || | |
882 | (ci->id == BCMA_CHIP_ID_BCM53572 && ci->pkg == 9)) | |
883 | iost &= ~BGMAC_BCMA_IOST_ATTACHED; | |
884 | ||
885 | if (iost & BGMAC_BCMA_IOST_ATTACHED) { | |
886 | flags = BGMAC_BCMA_IOCTL_SW_CLKEN; | |
887 | if (!bgmac->has_robosw) | |
888 | flags |= BGMAC_BCMA_IOCTL_SW_RESET; | |
889 | } | |
890 | ||
891 | bcma_core_enable(core, flags); | |
892 | ||
893 | if (core->id.rev > 2) { | |
894 | bgmac_set(bgmac, BCMA_CLKCTLST, 1 << 8); | |
895 | bgmac_wait_value(bgmac->core, BCMA_CLKCTLST, 1 << 24, 1 << 24, | |
896 | 1000); | |
897 | } | |
898 | ||
899 | if (ci->id == BCMA_CHIP_ID_BCM5357 || ci->id == BCMA_CHIP_ID_BCM4749 || | |
900 | ci->id == BCMA_CHIP_ID_BCM53572) { | |
901 | struct bcma_drv_cc *cc = &bgmac->core->bus->drv_cc; | |
902 | u8 et_swtype = 0; | |
903 | u8 sw_type = BGMAC_CHIPCTL_1_SW_TYPE_EPHY | | |
6a391e7b | 904 | BGMAC_CHIPCTL_1_IF_TYPE_MII; |
3647268d | 905 | char buf[4]; |
dd4544f0 | 906 | |
3647268d | 907 | if (bcm47xx_nvram_getenv("et_swtype", buf, sizeof(buf)) > 0) { |
dd4544f0 RM |
908 | if (kstrtou8(buf, 0, &et_swtype)) |
909 | bgmac_err(bgmac, "Failed to parse et_swtype (%s)\n", | |
910 | buf); | |
911 | et_swtype &= 0x0f; | |
912 | et_swtype <<= 4; | |
913 | sw_type = et_swtype; | |
914 | } else if (ci->id == BCMA_CHIP_ID_BCM5357 && ci->pkg == 9) { | |
915 | sw_type = BGMAC_CHIPCTL_1_SW_TYPE_EPHYRMII; | |
b5a4c2f3 HM |
916 | } else if ((ci->id != BCMA_CHIP_ID_BCM53572 && ci->pkg == 10) || |
917 | (ci->id == BCMA_CHIP_ID_BCM53572 && ci->pkg == 9)) { | |
918 | sw_type = BGMAC_CHIPCTL_1_IF_TYPE_RGMII | | |
919 | BGMAC_CHIPCTL_1_SW_TYPE_RGMII; | |
dd4544f0 RM |
920 | } |
921 | bcma_chipco_chipctl_maskset(cc, 1, | |
922 | ~(BGMAC_CHIPCTL_1_IF_TYPE_MASK | | |
923 | BGMAC_CHIPCTL_1_SW_TYPE_MASK), | |
924 | sw_type); | |
925 | } | |
926 | ||
927 | if (iost & BGMAC_BCMA_IOST_ATTACHED && !bgmac->has_robosw) | |
928 | bcma_awrite32(core, BCMA_IOCTL, | |
929 | bcma_aread32(core, BCMA_IOCTL) & | |
930 | ~BGMAC_BCMA_IOCTL_SW_RESET); | |
931 | ||
932 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_reset | |
933 | * Specs don't say about using BGMAC_CMDCFG_SR, but in this routine | |
934 | * BGMAC_CMDCFG is read _after_ putting chip in a reset. So it has to | |
935 | * be keps until taking MAC out of the reset. | |
936 | */ | |
937 | bgmac_cmdcfg_maskset(bgmac, | |
938 | ~(BGMAC_CMDCFG_TE | | |
939 | BGMAC_CMDCFG_RE | | |
940 | BGMAC_CMDCFG_RPI | | |
941 | BGMAC_CMDCFG_TAI | | |
942 | BGMAC_CMDCFG_HD | | |
943 | BGMAC_CMDCFG_ML | | |
944 | BGMAC_CMDCFG_CFE | | |
945 | BGMAC_CMDCFG_RL | | |
946 | BGMAC_CMDCFG_RED | | |
947 | BGMAC_CMDCFG_PE | | |
948 | BGMAC_CMDCFG_TPI | | |
949 | BGMAC_CMDCFG_PAD_EN | | |
950 | BGMAC_CMDCFG_PF), | |
951 | BGMAC_CMDCFG_PROM | | |
952 | BGMAC_CMDCFG_NLC | | |
953 | BGMAC_CMDCFG_CFE | | |
954 | BGMAC_CMDCFG_SR, | |
955 | false); | |
d469962f RM |
956 | bgmac->mac_speed = SPEED_UNKNOWN; |
957 | bgmac->mac_duplex = DUPLEX_UNKNOWN; | |
dd4544f0 RM |
958 | |
959 | bgmac_clear_mib(bgmac); | |
960 | if (core->id.id == BCMA_CORE_4706_MAC_GBIT) | |
961 | bcma_maskset32(bgmac->cmn, BCMA_GMAC_CMN_PHY_CTL, ~0, | |
962 | BCMA_GMAC_CMN_PC_MTE); | |
963 | else | |
964 | bgmac_set(bgmac, BGMAC_PHY_CNTL, BGMAC_PC_MTE); | |
965 | bgmac_miiconfig(bgmac); | |
966 | bgmac_phy_init(bgmac); | |
967 | ||
49a467b4 HM |
968 | netdev_reset_queue(bgmac->net_dev); |
969 | ||
dd4544f0 RM |
970 | bgmac->int_status = 0; |
971 | } | |
972 | ||
973 | static void bgmac_chip_intrs_on(struct bgmac *bgmac) | |
974 | { | |
975 | bgmac_write(bgmac, BGMAC_INT_MASK, bgmac->int_mask); | |
976 | } | |
977 | ||
978 | static void bgmac_chip_intrs_off(struct bgmac *bgmac) | |
979 | { | |
980 | bgmac_write(bgmac, BGMAC_INT_MASK, 0); | |
4160815f | 981 | bgmac_read(bgmac, BGMAC_INT_MASK); |
dd4544f0 RM |
982 | } |
983 | ||
984 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_enable */ | |
985 | static void bgmac_enable(struct bgmac *bgmac) | |
986 | { | |
987 | struct bcma_chipinfo *ci = &bgmac->core->bus->chipinfo; | |
988 | u32 cmdcfg; | |
989 | u32 mode; | |
990 | u32 rxq_ctl; | |
991 | u32 fl_ctl; | |
992 | u16 bp_clk; | |
993 | u8 mdp; | |
994 | ||
995 | cmdcfg = bgmac_read(bgmac, BGMAC_CMDCFG); | |
996 | bgmac_cmdcfg_maskset(bgmac, ~(BGMAC_CMDCFG_TE | BGMAC_CMDCFG_RE), | |
997 | BGMAC_CMDCFG_SR, true); | |
998 | udelay(2); | |
999 | cmdcfg |= BGMAC_CMDCFG_TE | BGMAC_CMDCFG_RE; | |
1000 | bgmac_write(bgmac, BGMAC_CMDCFG, cmdcfg); | |
1001 | ||
1002 | mode = (bgmac_read(bgmac, BGMAC_DEV_STATUS) & BGMAC_DS_MM_MASK) >> | |
1003 | BGMAC_DS_MM_SHIFT; | |
1004 | if (ci->id != BCMA_CHIP_ID_BCM47162 || mode != 0) | |
1005 | bgmac_set(bgmac, BCMA_CLKCTLST, BCMA_CLKCTLST_FORCEHT); | |
1006 | if (ci->id == BCMA_CHIP_ID_BCM47162 && mode == 2) | |
1007 | bcma_chipco_chipctl_maskset(&bgmac->core->bus->drv_cc, 1, ~0, | |
1008 | BGMAC_CHIPCTL_1_RXC_DLL_BYPASS); | |
1009 | ||
1010 | switch (ci->id) { | |
1011 | case BCMA_CHIP_ID_BCM5357: | |
1012 | case BCMA_CHIP_ID_BCM4749: | |
1013 | case BCMA_CHIP_ID_BCM53572: | |
1014 | case BCMA_CHIP_ID_BCM4716: | |
1015 | case BCMA_CHIP_ID_BCM47162: | |
1016 | fl_ctl = 0x03cb04cb; | |
1017 | if (ci->id == BCMA_CHIP_ID_BCM5357 || | |
1018 | ci->id == BCMA_CHIP_ID_BCM4749 || | |
1019 | ci->id == BCMA_CHIP_ID_BCM53572) | |
1020 | fl_ctl = 0x2300e1; | |
1021 | bgmac_write(bgmac, BGMAC_FLOW_CTL_THRESH, fl_ctl); | |
1022 | bgmac_write(bgmac, BGMAC_PAUSE_CTL, 0x27fff); | |
1023 | break; | |
1024 | } | |
1025 | ||
1026 | rxq_ctl = bgmac_read(bgmac, BGMAC_RXQ_CTL); | |
1027 | rxq_ctl &= ~BGMAC_RXQ_CTL_MDP_MASK; | |
1028 | bp_clk = bcma_pmu_get_bus_clock(&bgmac->core->bus->drv_cc) / 1000000; | |
1029 | mdp = (bp_clk * 128 / 1000) - 3; | |
1030 | rxq_ctl |= (mdp << BGMAC_RXQ_CTL_MDP_SHIFT); | |
1031 | bgmac_write(bgmac, BGMAC_RXQ_CTL, rxq_ctl); | |
1032 | } | |
1033 | ||
1034 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipinit */ | |
1035 | static void bgmac_chip_init(struct bgmac *bgmac, bool full_init) | |
1036 | { | |
1037 | struct bgmac_dma_ring *ring; | |
dd4544f0 RM |
1038 | int i; |
1039 | ||
1040 | /* 1 interrupt per received frame */ | |
1041 | bgmac_write(bgmac, BGMAC_INT_RECV_LAZY, 1 << BGMAC_IRL_FC_SHIFT); | |
1042 | ||
1043 | /* Enable 802.3x tx flow control (honor received PAUSE frames) */ | |
1044 | bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_RPI, 0, true); | |
1045 | ||
c6edfe10 | 1046 | bgmac_set_rx_mode(bgmac->net_dev); |
dd4544f0 | 1047 | |
4e209001 | 1048 | bgmac_write_mac_address(bgmac, bgmac->net_dev->dev_addr); |
dd4544f0 RM |
1049 | |
1050 | if (bgmac->loopback) | |
e9ba1039 | 1051 | bgmac_cmdcfg_maskset(bgmac, ~0, BGMAC_CMDCFG_ML, false); |
dd4544f0 | 1052 | else |
e9ba1039 | 1053 | bgmac_cmdcfg_maskset(bgmac, ~BGMAC_CMDCFG_ML, 0, false); |
dd4544f0 RM |
1054 | |
1055 | bgmac_write(bgmac, BGMAC_RXMAX_LENGTH, 32 + ETHER_MAX_LEN); | |
1056 | ||
dd4544f0 RM |
1057 | if (full_init) { |
1058 | bgmac_dma_init(bgmac); | |
1059 | if (1) /* FIXME: is there any case we don't want IRQs? */ | |
1060 | bgmac_chip_intrs_on(bgmac); | |
1061 | } else { | |
1062 | for (i = 0; i < BGMAC_MAX_RX_RINGS; i++) { | |
1063 | ring = &bgmac->rx_ring[i]; | |
1064 | bgmac_dma_rx_enable(bgmac, ring); | |
1065 | } | |
1066 | } | |
1067 | ||
1068 | bgmac_enable(bgmac); | |
1069 | } | |
1070 | ||
1071 | static irqreturn_t bgmac_interrupt(int irq, void *dev_id) | |
1072 | { | |
1073 | struct bgmac *bgmac = netdev_priv(dev_id); | |
1074 | ||
1075 | u32 int_status = bgmac_read(bgmac, BGMAC_INT_STATUS); | |
1076 | int_status &= bgmac->int_mask; | |
1077 | ||
1078 | if (!int_status) | |
1079 | return IRQ_NONE; | |
1080 | ||
1081 | /* Ack */ | |
1082 | bgmac_write(bgmac, BGMAC_INT_STATUS, int_status); | |
1083 | ||
1084 | /* Disable new interrupts until handling existing ones */ | |
1085 | bgmac_chip_intrs_off(bgmac); | |
1086 | ||
1087 | bgmac->int_status = int_status; | |
1088 | ||
1089 | napi_schedule(&bgmac->napi); | |
1090 | ||
1091 | return IRQ_HANDLED; | |
1092 | } | |
1093 | ||
1094 | static int bgmac_poll(struct napi_struct *napi, int weight) | |
1095 | { | |
1096 | struct bgmac *bgmac = container_of(napi, struct bgmac, napi); | |
1097 | struct bgmac_dma_ring *ring; | |
1098 | int handled = 0; | |
1099 | ||
1100 | if (bgmac->int_status & BGMAC_IS_TX0) { | |
1101 | ring = &bgmac->tx_ring[0]; | |
1102 | bgmac_dma_tx_free(bgmac, ring); | |
1103 | bgmac->int_status &= ~BGMAC_IS_TX0; | |
1104 | } | |
1105 | ||
1106 | if (bgmac->int_status & BGMAC_IS_RX) { | |
1107 | ring = &bgmac->rx_ring[0]; | |
1108 | handled += bgmac_dma_rx_read(bgmac, ring, weight); | |
1109 | bgmac->int_status &= ~BGMAC_IS_RX; | |
1110 | } | |
1111 | ||
1112 | if (bgmac->int_status) { | |
1113 | bgmac_err(bgmac, "Unknown IRQs: 0x%08X\n", bgmac->int_status); | |
1114 | bgmac->int_status = 0; | |
1115 | } | |
1116 | ||
1117 | if (handled < weight) | |
1118 | napi_complete(napi); | |
1119 | ||
1120 | bgmac_chip_intrs_on(bgmac); | |
1121 | ||
1122 | return handled; | |
1123 | } | |
1124 | ||
1125 | /************************************************** | |
1126 | * net_device_ops | |
1127 | **************************************************/ | |
1128 | ||
1129 | static int bgmac_open(struct net_device *net_dev) | |
1130 | { | |
1131 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1132 | int err = 0; | |
1133 | ||
1134 | bgmac_chip_reset(bgmac); | |
1135 | /* Specs say about reclaiming rings here, but we do that in DMA init */ | |
1136 | bgmac_chip_init(bgmac, true); | |
1137 | ||
1138 | err = request_irq(bgmac->core->irq, bgmac_interrupt, IRQF_SHARED, | |
1139 | KBUILD_MODNAME, net_dev); | |
1140 | if (err < 0) { | |
1141 | bgmac_err(bgmac, "IRQ request error: %d!\n", err); | |
1142 | goto err_out; | |
1143 | } | |
1144 | napi_enable(&bgmac->napi); | |
1145 | ||
4e34da4d RM |
1146 | phy_start(bgmac->phy_dev); |
1147 | ||
dd4544f0 RM |
1148 | netif_carrier_on(net_dev); |
1149 | ||
1150 | err_out: | |
1151 | return err; | |
1152 | } | |
1153 | ||
1154 | static int bgmac_stop(struct net_device *net_dev) | |
1155 | { | |
1156 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1157 | ||
1158 | netif_carrier_off(net_dev); | |
1159 | ||
4e34da4d RM |
1160 | phy_stop(bgmac->phy_dev); |
1161 | ||
dd4544f0 RM |
1162 | napi_disable(&bgmac->napi); |
1163 | bgmac_chip_intrs_off(bgmac); | |
1164 | free_irq(bgmac->core->irq, net_dev); | |
1165 | ||
1166 | bgmac_chip_reset(bgmac); | |
1167 | ||
1168 | return 0; | |
1169 | } | |
1170 | ||
1171 | static netdev_tx_t bgmac_start_xmit(struct sk_buff *skb, | |
1172 | struct net_device *net_dev) | |
1173 | { | |
1174 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1175 | struct bgmac_dma_ring *ring; | |
1176 | ||
1177 | /* No QOS support yet */ | |
1178 | ring = &bgmac->tx_ring[0]; | |
1179 | return bgmac_dma_tx_add(bgmac, ring, skb); | |
1180 | } | |
1181 | ||
4e209001 HM |
1182 | static int bgmac_set_mac_address(struct net_device *net_dev, void *addr) |
1183 | { | |
1184 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1185 | int ret; | |
1186 | ||
1187 | ret = eth_prepare_mac_addr_change(net_dev, addr); | |
1188 | if (ret < 0) | |
1189 | return ret; | |
1190 | bgmac_write_mac_address(bgmac, (u8 *)addr); | |
1191 | eth_commit_mac_addr_change(net_dev, addr); | |
1192 | return 0; | |
1193 | } | |
1194 | ||
dd4544f0 RM |
1195 | static int bgmac_ioctl(struct net_device *net_dev, struct ifreq *ifr, int cmd) |
1196 | { | |
1197 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1198 | struct mii_ioctl_data *data = if_mii(ifr); | |
1199 | ||
1200 | switch (cmd) { | |
1201 | case SIOCGMIIPHY: | |
1202 | data->phy_id = bgmac->phyaddr; | |
1203 | /* fallthru */ | |
1204 | case SIOCGMIIREG: | |
1205 | if (!netif_running(net_dev)) | |
1206 | return -EAGAIN; | |
1207 | data->val_out = bgmac_phy_read(bgmac, data->phy_id, | |
1208 | data->reg_num & 0x1f); | |
1209 | return 0; | |
1210 | case SIOCSMIIREG: | |
1211 | if (!netif_running(net_dev)) | |
1212 | return -EAGAIN; | |
1213 | bgmac_phy_write(bgmac, data->phy_id, data->reg_num & 0x1f, | |
1214 | data->val_in); | |
1215 | return 0; | |
1216 | default: | |
1217 | return -EOPNOTSUPP; | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | static const struct net_device_ops bgmac_netdev_ops = { | |
1222 | .ndo_open = bgmac_open, | |
1223 | .ndo_stop = bgmac_stop, | |
1224 | .ndo_start_xmit = bgmac_start_xmit, | |
c6edfe10 | 1225 | .ndo_set_rx_mode = bgmac_set_rx_mode, |
4e209001 | 1226 | .ndo_set_mac_address = bgmac_set_mac_address, |
522c5907 | 1227 | .ndo_validate_addr = eth_validate_addr, |
dd4544f0 RM |
1228 | .ndo_do_ioctl = bgmac_ioctl, |
1229 | }; | |
1230 | ||
1231 | /************************************************** | |
1232 | * ethtool_ops | |
1233 | **************************************************/ | |
1234 | ||
1235 | static int bgmac_get_settings(struct net_device *net_dev, | |
1236 | struct ethtool_cmd *cmd) | |
1237 | { | |
1238 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1239 | ||
5824d2d1 | 1240 | return phy_ethtool_gset(bgmac->phy_dev, cmd); |
dd4544f0 RM |
1241 | } |
1242 | ||
dd4544f0 RM |
1243 | static int bgmac_set_settings(struct net_device *net_dev, |
1244 | struct ethtool_cmd *cmd) | |
1245 | { | |
1246 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1247 | ||
5824d2d1 | 1248 | return phy_ethtool_sset(bgmac->phy_dev, cmd); |
dd4544f0 | 1249 | } |
dd4544f0 RM |
1250 | |
1251 | static void bgmac_get_drvinfo(struct net_device *net_dev, | |
1252 | struct ethtool_drvinfo *info) | |
1253 | { | |
1254 | strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); | |
1255 | strlcpy(info->bus_info, "BCMA", sizeof(info->bus_info)); | |
1256 | } | |
1257 | ||
1258 | static const struct ethtool_ops bgmac_ethtool_ops = { | |
1259 | .get_settings = bgmac_get_settings, | |
5824d2d1 | 1260 | .set_settings = bgmac_set_settings, |
dd4544f0 RM |
1261 | .get_drvinfo = bgmac_get_drvinfo, |
1262 | }; | |
1263 | ||
11e5e76e RM |
1264 | /************************************************** |
1265 | * MII | |
1266 | **************************************************/ | |
1267 | ||
1268 | static int bgmac_mii_read(struct mii_bus *bus, int mii_id, int regnum) | |
1269 | { | |
1270 | return bgmac_phy_read(bus->priv, mii_id, regnum); | |
1271 | } | |
1272 | ||
1273 | static int bgmac_mii_write(struct mii_bus *bus, int mii_id, int regnum, | |
1274 | u16 value) | |
1275 | { | |
1276 | return bgmac_phy_write(bus->priv, mii_id, regnum, value); | |
1277 | } | |
1278 | ||
5824d2d1 RM |
1279 | static void bgmac_adjust_link(struct net_device *net_dev) |
1280 | { | |
1281 | struct bgmac *bgmac = netdev_priv(net_dev); | |
1282 | struct phy_device *phy_dev = bgmac->phy_dev; | |
1283 | bool update = false; | |
1284 | ||
1285 | if (phy_dev->link) { | |
1286 | if (phy_dev->speed != bgmac->mac_speed) { | |
1287 | bgmac->mac_speed = phy_dev->speed; | |
1288 | update = true; | |
1289 | } | |
1290 | ||
1291 | if (phy_dev->duplex != bgmac->mac_duplex) { | |
1292 | bgmac->mac_duplex = phy_dev->duplex; | |
1293 | update = true; | |
1294 | } | |
1295 | } | |
1296 | ||
1297 | if (update) { | |
1298 | bgmac_mac_speed(bgmac); | |
1299 | phy_print_status(phy_dev); | |
1300 | } | |
1301 | } | |
1302 | ||
11e5e76e RM |
1303 | static int bgmac_mii_register(struct bgmac *bgmac) |
1304 | { | |
1305 | struct mii_bus *mii_bus; | |
5824d2d1 RM |
1306 | struct phy_device *phy_dev; |
1307 | char bus_id[MII_BUS_ID_SIZE + 3]; | |
11e5e76e RM |
1308 | int i, err = 0; |
1309 | ||
1310 | mii_bus = mdiobus_alloc(); | |
1311 | if (!mii_bus) | |
1312 | return -ENOMEM; | |
1313 | ||
1314 | mii_bus->name = "bgmac mii bus"; | |
1315 | sprintf(mii_bus->id, "%s-%d-%d", "bgmac", bgmac->core->bus->num, | |
1316 | bgmac->core->core_unit); | |
1317 | mii_bus->priv = bgmac; | |
1318 | mii_bus->read = bgmac_mii_read; | |
1319 | mii_bus->write = bgmac_mii_write; | |
1320 | mii_bus->parent = &bgmac->core->dev; | |
1321 | mii_bus->phy_mask = ~(1 << bgmac->phyaddr); | |
1322 | ||
1323 | mii_bus->irq = kmalloc_array(PHY_MAX_ADDR, sizeof(int), GFP_KERNEL); | |
1324 | if (!mii_bus->irq) { | |
1325 | err = -ENOMEM; | |
1326 | goto err_free_bus; | |
1327 | } | |
1328 | for (i = 0; i < PHY_MAX_ADDR; i++) | |
1329 | mii_bus->irq[i] = PHY_POLL; | |
1330 | ||
1331 | err = mdiobus_register(mii_bus); | |
1332 | if (err) { | |
1333 | bgmac_err(bgmac, "Registration of mii bus failed\n"); | |
1334 | goto err_free_irq; | |
1335 | } | |
1336 | ||
1337 | bgmac->mii_bus = mii_bus; | |
1338 | ||
5824d2d1 RM |
1339 | /* Connect to the PHY */ |
1340 | snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, mii_bus->id, | |
1341 | bgmac->phyaddr); | |
1342 | phy_dev = phy_connect(bgmac->net_dev, bus_id, &bgmac_adjust_link, | |
1343 | PHY_INTERFACE_MODE_MII); | |
1344 | if (IS_ERR(phy_dev)) { | |
1345 | bgmac_err(bgmac, "PHY connecton failed\n"); | |
1346 | err = PTR_ERR(phy_dev); | |
1347 | goto err_unregister_bus; | |
1348 | } | |
1349 | bgmac->phy_dev = phy_dev; | |
1350 | ||
11e5e76e RM |
1351 | return err; |
1352 | ||
5824d2d1 RM |
1353 | err_unregister_bus: |
1354 | mdiobus_unregister(mii_bus); | |
11e5e76e RM |
1355 | err_free_irq: |
1356 | kfree(mii_bus->irq); | |
1357 | err_free_bus: | |
1358 | mdiobus_free(mii_bus); | |
1359 | return err; | |
1360 | } | |
1361 | ||
1362 | static void bgmac_mii_unregister(struct bgmac *bgmac) | |
1363 | { | |
1364 | struct mii_bus *mii_bus = bgmac->mii_bus; | |
1365 | ||
1366 | mdiobus_unregister(mii_bus); | |
1367 | kfree(mii_bus->irq); | |
1368 | mdiobus_free(mii_bus); | |
1369 | } | |
1370 | ||
dd4544f0 RM |
1371 | /************************************************** |
1372 | * BCMA bus ops | |
1373 | **************************************************/ | |
1374 | ||
1375 | /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipattach */ | |
1376 | static int bgmac_probe(struct bcma_device *core) | |
1377 | { | |
1378 | struct net_device *net_dev; | |
1379 | struct bgmac *bgmac; | |
1380 | struct ssb_sprom *sprom = &core->bus->sprom; | |
1381 | u8 *mac = core->core_unit ? sprom->et1mac : sprom->et0mac; | |
1382 | int err; | |
1383 | ||
1384 | /* We don't support 2nd, 3rd, ... units, SPROM has to be adjusted */ | |
1385 | if (core->core_unit > 1) { | |
1386 | pr_err("Unsupported core_unit %d\n", core->core_unit); | |
1387 | return -ENOTSUPP; | |
1388 | } | |
1389 | ||
d166f218 RM |
1390 | if (!is_valid_ether_addr(mac)) { |
1391 | dev_err(&core->dev, "Invalid MAC addr: %pM\n", mac); | |
1392 | eth_random_addr(mac); | |
1393 | dev_warn(&core->dev, "Using random MAC: %pM\n", mac); | |
1394 | } | |
1395 | ||
dd4544f0 RM |
1396 | /* Allocation and references */ |
1397 | net_dev = alloc_etherdev(sizeof(*bgmac)); | |
1398 | if (!net_dev) | |
1399 | return -ENOMEM; | |
1400 | net_dev->netdev_ops = &bgmac_netdev_ops; | |
1401 | net_dev->irq = core->irq; | |
1402 | SET_ETHTOOL_OPS(net_dev, &bgmac_ethtool_ops); | |
1403 | bgmac = netdev_priv(net_dev); | |
1404 | bgmac->net_dev = net_dev; | |
1405 | bgmac->core = core; | |
1406 | bcma_set_drvdata(core, bgmac); | |
1407 | ||
1408 | /* Defaults */ | |
dd4544f0 RM |
1409 | memcpy(bgmac->net_dev->dev_addr, mac, ETH_ALEN); |
1410 | ||
1411 | /* On BCM4706 we need common core to access PHY */ | |
1412 | if (core->id.id == BCMA_CORE_4706_MAC_GBIT && | |
1413 | !core->bus->drv_gmac_cmn.core) { | |
1414 | bgmac_err(bgmac, "GMAC CMN core not found (required for BCM4706)\n"); | |
1415 | err = -ENODEV; | |
1416 | goto err_netdev_free; | |
1417 | } | |
1418 | bgmac->cmn = core->bus->drv_gmac_cmn.core; | |
1419 | ||
1420 | bgmac->phyaddr = core->core_unit ? sprom->et1phyaddr : | |
1421 | sprom->et0phyaddr; | |
1422 | bgmac->phyaddr &= BGMAC_PHY_MASK; | |
1423 | if (bgmac->phyaddr == BGMAC_PHY_MASK) { | |
1424 | bgmac_err(bgmac, "No PHY found\n"); | |
1425 | err = -ENODEV; | |
1426 | goto err_netdev_free; | |
1427 | } | |
1428 | bgmac_info(bgmac, "Found PHY addr: %d%s\n", bgmac->phyaddr, | |
1429 | bgmac->phyaddr == BGMAC_PHY_NOREGS ? " (NOREGS)" : ""); | |
1430 | ||
1431 | if (core->bus->hosttype == BCMA_HOSTTYPE_PCI) { | |
1432 | bgmac_err(bgmac, "PCI setup not implemented\n"); | |
1433 | err = -ENOTSUPP; | |
1434 | goto err_netdev_free; | |
1435 | } | |
1436 | ||
1437 | bgmac_chip_reset(bgmac); | |
1438 | ||
1439 | err = bgmac_dma_alloc(bgmac); | |
1440 | if (err) { | |
1441 | bgmac_err(bgmac, "Unable to alloc memory for DMA\n"); | |
1442 | goto err_netdev_free; | |
1443 | } | |
1444 | ||
1445 | bgmac->int_mask = BGMAC_IS_ERRMASK | BGMAC_IS_RX | BGMAC_IS_TX_MASK; | |
edb15d83 | 1446 | if (bcm47xx_nvram_getenv("et0_no_txint", NULL, 0) == 0) |
dd4544f0 RM |
1447 | bgmac->int_mask &= ~BGMAC_IS_TX_MASK; |
1448 | ||
1449 | /* TODO: reset the external phy. Specs are needed */ | |
1450 | bgmac_phy_reset(bgmac); | |
1451 | ||
1452 | bgmac->has_robosw = !!(core->bus->sprom.boardflags_lo & | |
1453 | BGMAC_BFL_ENETROBO); | |
1454 | if (bgmac->has_robosw) | |
1455 | bgmac_warn(bgmac, "Support for Roboswitch not implemented\n"); | |
1456 | ||
1457 | if (core->bus->sprom.boardflags_lo & BGMAC_BFL_ENETADM) | |
1458 | bgmac_warn(bgmac, "Support for ADMtek ethernet switch not implemented\n"); | |
1459 | ||
11e5e76e RM |
1460 | err = bgmac_mii_register(bgmac); |
1461 | if (err) { | |
1462 | bgmac_err(bgmac, "Cannot register MDIO\n"); | |
1463 | err = -ENOTSUPP; | |
1464 | goto err_dma_free; | |
1465 | } | |
1466 | ||
dd4544f0 RM |
1467 | err = register_netdev(bgmac->net_dev); |
1468 | if (err) { | |
1469 | bgmac_err(bgmac, "Cannot register net device\n"); | |
1470 | err = -ENOTSUPP; | |
11e5e76e | 1471 | goto err_mii_unregister; |
dd4544f0 RM |
1472 | } |
1473 | ||
1474 | netif_carrier_off(net_dev); | |
1475 | ||
1476 | netif_napi_add(net_dev, &bgmac->napi, bgmac_poll, BGMAC_WEIGHT); | |
1477 | ||
1478 | return 0; | |
1479 | ||
11e5e76e RM |
1480 | err_mii_unregister: |
1481 | bgmac_mii_unregister(bgmac); | |
dd4544f0 RM |
1482 | err_dma_free: |
1483 | bgmac_dma_free(bgmac); | |
1484 | ||
1485 | err_netdev_free: | |
1486 | bcma_set_drvdata(core, NULL); | |
1487 | free_netdev(net_dev); | |
1488 | ||
1489 | return err; | |
1490 | } | |
1491 | ||
1492 | static void bgmac_remove(struct bcma_device *core) | |
1493 | { | |
1494 | struct bgmac *bgmac = bcma_get_drvdata(core); | |
1495 | ||
1496 | netif_napi_del(&bgmac->napi); | |
1497 | unregister_netdev(bgmac->net_dev); | |
11e5e76e | 1498 | bgmac_mii_unregister(bgmac); |
dd4544f0 RM |
1499 | bgmac_dma_free(bgmac); |
1500 | bcma_set_drvdata(core, NULL); | |
1501 | free_netdev(bgmac->net_dev); | |
1502 | } | |
1503 | ||
1504 | static struct bcma_driver bgmac_bcma_driver = { | |
1505 | .name = KBUILD_MODNAME, | |
1506 | .id_table = bgmac_bcma_tbl, | |
1507 | .probe = bgmac_probe, | |
1508 | .remove = bgmac_remove, | |
1509 | }; | |
1510 | ||
1511 | static int __init bgmac_init(void) | |
1512 | { | |
1513 | int err; | |
1514 | ||
1515 | err = bcma_driver_register(&bgmac_bcma_driver); | |
1516 | if (err) | |
1517 | return err; | |
1518 | pr_info("Broadcom 47xx GBit MAC driver loaded\n"); | |
1519 | ||
1520 | return 0; | |
1521 | } | |
1522 | ||
1523 | static void __exit bgmac_exit(void) | |
1524 | { | |
1525 | bcma_driver_unregister(&bgmac_bcma_driver); | |
1526 | } | |
1527 | ||
1528 | module_init(bgmac_init) | |
1529 | module_exit(bgmac_exit) | |
1530 | ||
1531 | MODULE_AUTHOR("Rafał Miłecki"); | |
1532 | MODULE_LICENSE("GPL"); |