2 * Driver for (BCM4706)? GBit MAC core on BCMA bus.
4 * Copyright (C) 2012 Rafał Miłecki <zajec5@gmail.com>
6 * Licensed under the GNU/GPL. See COPYING for details.
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>
16 #include <linux/phy.h>
17 #include <linux/phy_fixed.h>
18 #include <linux/interrupt.h>
19 #include <linux/dma-mapping.h>
20 #include <bcm47xx_nvram.h>
22 static const struct bcma_device_id bgmac_bcma_tbl
[] = {
23 BCMA_CORE(BCMA_MANUF_BCM
, BCMA_CORE_4706_MAC_GBIT
, BCMA_ANY_REV
, BCMA_ANY_CLASS
),
24 BCMA_CORE(BCMA_MANUF_BCM
, BCMA_CORE_MAC_GBIT
, BCMA_ANY_REV
, BCMA_ANY_CLASS
),
27 MODULE_DEVICE_TABLE(bcma
, bgmac_bcma_tbl
);
29 static bool bgmac_wait_value(struct bcma_device
*core
, u16 reg
, u32 mask
,
30 u32 value
, int timeout
)
35 for (i
= 0; i
< timeout
/ 10; i
++) {
36 val
= bcma_read32(core
, reg
);
37 if ((val
& mask
) == value
)
41 pr_err("Timeout waiting for reg 0x%X\n", reg
);
45 /**************************************************
47 **************************************************/
49 static void bgmac_dma_tx_reset(struct bgmac
*bgmac
, struct bgmac_dma_ring
*ring
)
57 /* Suspend DMA TX ring first.
58 * bgmac_wait_value doesn't support waiting for any of few values, so
59 * implement whole loop here.
61 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_CTL
,
62 BGMAC_DMA_TX_SUSPEND
);
63 for (i
= 0; i
< 10000 / 10; i
++) {
64 val
= bgmac_read(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_STATUS
);
65 val
&= BGMAC_DMA_TX_STAT
;
66 if (val
== BGMAC_DMA_TX_STAT_DISABLED
||
67 val
== BGMAC_DMA_TX_STAT_IDLEWAIT
||
68 val
== BGMAC_DMA_TX_STAT_STOPPED
) {
75 bgmac_err(bgmac
, "Timeout suspending DMA TX ring 0x%X (BGMAC_DMA_TX_STAT: 0x%08X)\n",
76 ring
->mmio_base
, val
);
78 /* Remove SUSPEND bit */
79 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_CTL
, 0);
80 if (!bgmac_wait_value(bgmac
->core
,
81 ring
->mmio_base
+ BGMAC_DMA_TX_STATUS
,
82 BGMAC_DMA_TX_STAT
, BGMAC_DMA_TX_STAT_DISABLED
,
84 bgmac_warn(bgmac
, "DMA TX ring 0x%X wasn't disabled on time, waiting additional 300us\n",
87 val
= bgmac_read(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_STATUS
);
88 if ((val
& BGMAC_DMA_TX_STAT
) != BGMAC_DMA_TX_STAT_DISABLED
)
89 bgmac_err(bgmac
, "Reset of DMA TX ring 0x%X failed\n",
94 static void bgmac_dma_tx_enable(struct bgmac
*bgmac
,
95 struct bgmac_dma_ring
*ring
)
99 ctl
= bgmac_read(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_CTL
);
100 if (bgmac
->core
->id
.rev
>= 4) {
101 ctl
&= ~BGMAC_DMA_TX_BL_MASK
;
102 ctl
|= BGMAC_DMA_TX_BL_128
<< BGMAC_DMA_TX_BL_SHIFT
;
104 ctl
&= ~BGMAC_DMA_TX_MR_MASK
;
105 ctl
|= BGMAC_DMA_TX_MR_2
<< BGMAC_DMA_TX_MR_SHIFT
;
107 ctl
&= ~BGMAC_DMA_TX_PC_MASK
;
108 ctl
|= BGMAC_DMA_TX_PC_16
<< BGMAC_DMA_TX_PC_SHIFT
;
110 ctl
&= ~BGMAC_DMA_TX_PT_MASK
;
111 ctl
|= BGMAC_DMA_TX_PT_8
<< BGMAC_DMA_TX_PT_SHIFT
;
113 ctl
|= BGMAC_DMA_TX_ENABLE
;
114 ctl
|= BGMAC_DMA_TX_PARITY_DISABLE
;
115 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_CTL
, ctl
);
119 bgmac_dma_tx_add_buf(struct bgmac
*bgmac
, struct bgmac_dma_ring
*ring
,
120 int i
, int len
, u32 ctl0
)
122 struct bgmac_slot_info
*slot
;
123 struct bgmac_dma_desc
*dma_desc
;
126 if (i
== ring
->num_slots
- 1)
127 ctl0
|= BGMAC_DESC_CTL0_EOT
;
129 ctl1
= len
& BGMAC_DESC_CTL1_LEN
;
131 slot
= &ring
->slots
[i
];
132 dma_desc
= &ring
->cpu_base
[i
];
133 dma_desc
->addr_low
= cpu_to_le32(lower_32_bits(slot
->dma_addr
));
134 dma_desc
->addr_high
= cpu_to_le32(upper_32_bits(slot
->dma_addr
));
135 dma_desc
->ctl0
= cpu_to_le32(ctl0
);
136 dma_desc
->ctl1
= cpu_to_le32(ctl1
);
139 static netdev_tx_t
bgmac_dma_tx_add(struct bgmac
*bgmac
,
140 struct bgmac_dma_ring
*ring
,
143 struct device
*dma_dev
= bgmac
->core
->dma_dev
;
144 struct net_device
*net_dev
= bgmac
->net_dev
;
145 int index
= ring
->end
% BGMAC_TX_RING_SLOTS
;
146 struct bgmac_slot_info
*slot
= &ring
->slots
[index
];
151 if (skb
->len
> BGMAC_DESC_CTL1_LEN
) {
152 bgmac_err(bgmac
, "Too long skb (%d)\n", skb
->len
);
156 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
157 skb_checksum_help(skb
);
159 nr_frags
= skb_shinfo(skb
)->nr_frags
;
161 /* ring->end - ring->start will return the number of valid slots,
162 * even when ring->end overflows
164 if (ring
->end
- ring
->start
+ nr_frags
+ 1 >= BGMAC_TX_RING_SLOTS
) {
165 bgmac_err(bgmac
, "TX ring is full, queue should be stopped!\n");
166 netif_stop_queue(net_dev
);
167 return NETDEV_TX_BUSY
;
170 slot
->dma_addr
= dma_map_single(dma_dev
, skb
->data
, skb_headlen(skb
),
172 if (unlikely(dma_mapping_error(dma_dev
, slot
->dma_addr
)))
175 flags
= BGMAC_DESC_CTL0_SOF
;
177 flags
|= BGMAC_DESC_CTL0_EOF
| BGMAC_DESC_CTL0_IOC
;
179 bgmac_dma_tx_add_buf(bgmac
, ring
, index
, skb_headlen(skb
), flags
);
182 for (i
= 0; i
< nr_frags
; i
++) {
183 struct skb_frag_struct
*frag
= &skb_shinfo(skb
)->frags
[i
];
184 int len
= skb_frag_size(frag
);
186 index
= (index
+ 1) % BGMAC_TX_RING_SLOTS
;
187 slot
= &ring
->slots
[index
];
188 slot
->dma_addr
= skb_frag_dma_map(dma_dev
, frag
, 0,
190 if (unlikely(dma_mapping_error(dma_dev
, slot
->dma_addr
)))
193 if (i
== nr_frags
- 1)
194 flags
|= BGMAC_DESC_CTL0_EOF
| BGMAC_DESC_CTL0_IOC
;
196 bgmac_dma_tx_add_buf(bgmac
, ring
, index
, len
, flags
);
200 ring
->end
+= nr_frags
+ 1;
201 netdev_sent_queue(net_dev
, skb
->len
);
205 /* Increase ring->end to point empty slot. We tell hardware the first
206 * slot it should *not* read.
208 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_INDEX
,
210 (ring
->end
% BGMAC_TX_RING_SLOTS
) *
211 sizeof(struct bgmac_dma_desc
));
213 if (ring
->end
- ring
->start
>= BGMAC_TX_RING_SLOTS
- 8)
214 netif_stop_queue(net_dev
);
219 dma_unmap_single(dma_dev
, slot
->dma_addr
, skb_headlen(skb
),
223 int index
= (ring
->end
+ i
) % BGMAC_TX_RING_SLOTS
;
224 struct bgmac_slot_info
*slot
= &ring
->slots
[index
];
225 u32 ctl1
= le32_to_cpu(ring
->cpu_base
[index
].ctl1
);
226 int len
= ctl1
& BGMAC_DESC_CTL1_LEN
;
228 dma_unmap_page(dma_dev
, slot
->dma_addr
, len
, DMA_TO_DEVICE
);
232 bgmac_err(bgmac
, "Mapping error of skb on ring 0x%X\n",
240 /* Free transmitted packets */
241 static void bgmac_dma_tx_free(struct bgmac
*bgmac
, struct bgmac_dma_ring
*ring
)
243 struct device
*dma_dev
= bgmac
->core
->dma_dev
;
246 unsigned bytes_compl
= 0, pkts_compl
= 0;
248 /* The last slot that hardware didn't consume yet */
249 empty_slot
= bgmac_read(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_STATUS
);
250 empty_slot
&= BGMAC_DMA_TX_STATDPTR
;
251 empty_slot
-= ring
->index_base
;
252 empty_slot
&= BGMAC_DMA_TX_STATDPTR
;
253 empty_slot
/= sizeof(struct bgmac_dma_desc
);
255 while (ring
->start
!= ring
->end
) {
256 int slot_idx
= ring
->start
% BGMAC_TX_RING_SLOTS
;
257 struct bgmac_slot_info
*slot
= &ring
->slots
[slot_idx
];
261 if (slot_idx
== empty_slot
)
264 ctl1
= le32_to_cpu(ring
->cpu_base
[slot_idx
].ctl1
);
265 len
= ctl1
& BGMAC_DESC_CTL1_LEN
;
266 if (ctl1
& BGMAC_DESC_CTL0_SOF
)
267 /* Unmap no longer used buffer */
268 dma_unmap_single(dma_dev
, slot
->dma_addr
, len
,
271 dma_unmap_page(dma_dev
, slot
->dma_addr
, len
,
275 bytes_compl
+= slot
->skb
->len
;
278 /* Free memory! :) */
279 dev_kfree_skb(slot
->skb
);
291 netdev_completed_queue(bgmac
->net_dev
, pkts_compl
, bytes_compl
);
293 if (netif_queue_stopped(bgmac
->net_dev
))
294 netif_wake_queue(bgmac
->net_dev
);
297 static void bgmac_dma_rx_reset(struct bgmac
*bgmac
, struct bgmac_dma_ring
*ring
)
299 if (!ring
->mmio_base
)
302 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_CTL
, 0);
303 if (!bgmac_wait_value(bgmac
->core
,
304 ring
->mmio_base
+ BGMAC_DMA_RX_STATUS
,
305 BGMAC_DMA_RX_STAT
, BGMAC_DMA_RX_STAT_DISABLED
,
307 bgmac_err(bgmac
, "Reset of ring 0x%X RX failed\n",
311 static void bgmac_dma_rx_enable(struct bgmac
*bgmac
,
312 struct bgmac_dma_ring
*ring
)
316 ctl
= bgmac_read(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_CTL
);
317 if (bgmac
->core
->id
.rev
>= 4) {
318 ctl
&= ~BGMAC_DMA_RX_BL_MASK
;
319 ctl
|= BGMAC_DMA_RX_BL_128
<< BGMAC_DMA_RX_BL_SHIFT
;
321 ctl
&= ~BGMAC_DMA_RX_PC_MASK
;
322 ctl
|= BGMAC_DMA_RX_PC_8
<< BGMAC_DMA_RX_PC_SHIFT
;
324 ctl
&= ~BGMAC_DMA_RX_PT_MASK
;
325 ctl
|= BGMAC_DMA_RX_PT_1
<< BGMAC_DMA_RX_PT_SHIFT
;
327 ctl
&= BGMAC_DMA_RX_ADDREXT_MASK
;
328 ctl
|= BGMAC_DMA_RX_ENABLE
;
329 ctl
|= BGMAC_DMA_RX_PARITY_DISABLE
;
330 ctl
|= BGMAC_DMA_RX_OVERFLOW_CONT
;
331 ctl
|= BGMAC_RX_FRAME_OFFSET
<< BGMAC_DMA_RX_FRAME_OFFSET_SHIFT
;
332 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_CTL
, ctl
);
335 static int bgmac_dma_rx_skb_for_slot(struct bgmac
*bgmac
,
336 struct bgmac_slot_info
*slot
)
338 struct device
*dma_dev
= bgmac
->core
->dma_dev
;
340 struct bgmac_rx_header
*rx
;
344 buf
= netdev_alloc_frag(BGMAC_RX_ALLOC_SIZE
);
348 /* Poison - if everything goes fine, hardware will overwrite it */
349 rx
= buf
+ BGMAC_RX_BUF_OFFSET
;
350 rx
->len
= cpu_to_le16(0xdead);
351 rx
->flags
= cpu_to_le16(0xbeef);
353 /* Map skb for the DMA */
354 dma_addr
= dma_map_single(dma_dev
, buf
+ BGMAC_RX_BUF_OFFSET
,
355 BGMAC_RX_BUF_SIZE
, DMA_FROM_DEVICE
);
356 if (dma_mapping_error(dma_dev
, dma_addr
)) {
357 bgmac_err(bgmac
, "DMA mapping error\n");
358 put_page(virt_to_head_page(buf
));
362 /* Update the slot */
364 slot
->dma_addr
= dma_addr
;
369 static void bgmac_dma_rx_update_index(struct bgmac
*bgmac
,
370 struct bgmac_dma_ring
*ring
)
374 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_INDEX
,
376 ring
->end
* sizeof(struct bgmac_dma_desc
));
379 static void bgmac_dma_rx_setup_desc(struct bgmac
*bgmac
,
380 struct bgmac_dma_ring
*ring
, int desc_idx
)
382 struct bgmac_dma_desc
*dma_desc
= ring
->cpu_base
+ desc_idx
;
383 u32 ctl0
= 0, ctl1
= 0;
385 if (desc_idx
== ring
->num_slots
- 1)
386 ctl0
|= BGMAC_DESC_CTL0_EOT
;
387 ctl1
|= BGMAC_RX_BUF_SIZE
& BGMAC_DESC_CTL1_LEN
;
388 /* Is there any BGMAC device that requires extension? */
389 /* ctl1 |= (addrext << B43_DMA64_DCTL1_ADDREXT_SHIFT) &
390 * B43_DMA64_DCTL1_ADDREXT_MASK;
393 dma_desc
->addr_low
= cpu_to_le32(lower_32_bits(ring
->slots
[desc_idx
].dma_addr
));
394 dma_desc
->addr_high
= cpu_to_le32(upper_32_bits(ring
->slots
[desc_idx
].dma_addr
));
395 dma_desc
->ctl0
= cpu_to_le32(ctl0
);
396 dma_desc
->ctl1
= cpu_to_le32(ctl1
);
398 ring
->end
= desc_idx
;
401 static void bgmac_dma_rx_poison_buf(struct device
*dma_dev
,
402 struct bgmac_slot_info
*slot
)
404 struct bgmac_rx_header
*rx
= slot
->buf
+ BGMAC_RX_BUF_OFFSET
;
406 dma_sync_single_for_cpu(dma_dev
, slot
->dma_addr
, BGMAC_RX_BUF_SIZE
,
408 rx
->len
= cpu_to_le16(0xdead);
409 rx
->flags
= cpu_to_le16(0xbeef);
410 dma_sync_single_for_device(dma_dev
, slot
->dma_addr
, BGMAC_RX_BUF_SIZE
,
414 static int bgmac_dma_rx_read(struct bgmac
*bgmac
, struct bgmac_dma_ring
*ring
,
420 end_slot
= bgmac_read(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_STATUS
);
421 end_slot
&= BGMAC_DMA_RX_STATDPTR
;
422 end_slot
-= ring
->index_base
;
423 end_slot
&= BGMAC_DMA_RX_STATDPTR
;
424 end_slot
/= sizeof(struct bgmac_dma_desc
);
426 while (ring
->start
!= end_slot
) {
427 struct device
*dma_dev
= bgmac
->core
->dma_dev
;
428 struct bgmac_slot_info
*slot
= &ring
->slots
[ring
->start
];
429 struct bgmac_rx_header
*rx
= slot
->buf
+ BGMAC_RX_BUF_OFFSET
;
431 void *buf
= slot
->buf
;
432 dma_addr_t dma_addr
= slot
->dma_addr
;
436 /* Prepare new skb as replacement */
437 if (bgmac_dma_rx_skb_for_slot(bgmac
, slot
)) {
438 bgmac_dma_rx_poison_buf(dma_dev
, slot
);
442 /* Unmap buffer to make it accessible to the CPU */
443 dma_unmap_single(dma_dev
, dma_addr
,
444 BGMAC_RX_BUF_SIZE
, DMA_FROM_DEVICE
);
446 /* Get info from the header */
447 len
= le16_to_cpu(rx
->len
);
448 flags
= le16_to_cpu(rx
->flags
);
450 /* Check for poison and drop or pass the packet */
451 if (len
== 0xdead && flags
== 0xbeef) {
452 bgmac_err(bgmac
, "Found poisoned packet at slot %d, DMA issue!\n",
454 put_page(virt_to_head_page(buf
));
458 if (len
> BGMAC_RX_ALLOC_SIZE
) {
459 bgmac_err(bgmac
, "Found oversized packet at slot %d, DMA issue!\n",
461 put_page(virt_to_head_page(buf
));
468 skb
= build_skb(buf
, BGMAC_RX_ALLOC_SIZE
);
469 skb_put(skb
, BGMAC_RX_FRAME_OFFSET
+
470 BGMAC_RX_BUF_OFFSET
+ len
);
471 skb_pull(skb
, BGMAC_RX_FRAME_OFFSET
+
472 BGMAC_RX_BUF_OFFSET
);
474 skb_checksum_none_assert(skb
);
475 skb
->protocol
= eth_type_trans(skb
, bgmac
->net_dev
);
476 napi_gro_receive(&bgmac
->napi
, skb
);
480 bgmac_dma_rx_setup_desc(bgmac
, ring
, ring
->start
);
482 if (++ring
->start
>= BGMAC_RX_RING_SLOTS
)
485 if (handled
>= weight
) /* Should never be greater */
489 bgmac_dma_rx_update_index(bgmac
, ring
);
494 /* Does ring support unaligned addressing? */
495 static bool bgmac_dma_unaligned(struct bgmac
*bgmac
,
496 struct bgmac_dma_ring
*ring
,
497 enum bgmac_dma_ring_type ring_type
)
500 case BGMAC_DMA_RING_TX
:
501 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_RINGLO
,
503 if (bgmac_read(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_RINGLO
))
506 case BGMAC_DMA_RING_RX
:
507 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_RINGLO
,
509 if (bgmac_read(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_RINGLO
))
516 static void bgmac_dma_tx_ring_free(struct bgmac
*bgmac
,
517 struct bgmac_dma_ring
*ring
)
519 struct device
*dma_dev
= bgmac
->core
->dma_dev
;
520 struct bgmac_dma_desc
*dma_desc
= ring
->cpu_base
;
521 struct bgmac_slot_info
*slot
;
524 for (i
= 0; i
< ring
->num_slots
; i
++) {
525 int len
= dma_desc
[i
].ctl1
& BGMAC_DESC_CTL1_LEN
;
527 slot
= &ring
->slots
[i
];
528 dev_kfree_skb(slot
->skb
);
534 dma_unmap_single(dma_dev
, slot
->dma_addr
,
537 dma_unmap_page(dma_dev
, slot
->dma_addr
,
542 static void bgmac_dma_rx_ring_free(struct bgmac
*bgmac
,
543 struct bgmac_dma_ring
*ring
)
545 struct device
*dma_dev
= bgmac
->core
->dma_dev
;
546 struct bgmac_slot_info
*slot
;
549 for (i
= 0; i
< ring
->num_slots
; i
++) {
550 slot
= &ring
->slots
[i
];
554 dma_unmap_single(dma_dev
, slot
->dma_addr
,
557 put_page(virt_to_head_page(slot
->buf
));
562 static void bgmac_dma_ring_desc_free(struct bgmac
*bgmac
,
563 struct bgmac_dma_ring
*ring
)
565 struct device
*dma_dev
= bgmac
->core
->dma_dev
;
571 /* Free ring of descriptors */
572 size
= ring
->num_slots
* sizeof(struct bgmac_dma_desc
);
573 dma_free_coherent(dma_dev
, size
, ring
->cpu_base
,
577 static void bgmac_dma_cleanup(struct bgmac
*bgmac
)
581 for (i
= 0; i
< BGMAC_MAX_TX_RINGS
; i
++)
582 bgmac_dma_tx_ring_free(bgmac
, &bgmac
->tx_ring
[i
]);
584 for (i
= 0; i
< BGMAC_MAX_RX_RINGS
; i
++)
585 bgmac_dma_rx_ring_free(bgmac
, &bgmac
->rx_ring
[i
]);
588 static void bgmac_dma_free(struct bgmac
*bgmac
)
592 for (i
= 0; i
< BGMAC_MAX_TX_RINGS
; i
++)
593 bgmac_dma_ring_desc_free(bgmac
, &bgmac
->tx_ring
[i
]);
595 for (i
= 0; i
< BGMAC_MAX_RX_RINGS
; i
++)
596 bgmac_dma_ring_desc_free(bgmac
, &bgmac
->rx_ring
[i
]);
599 static int bgmac_dma_alloc(struct bgmac
*bgmac
)
601 struct device
*dma_dev
= bgmac
->core
->dma_dev
;
602 struct bgmac_dma_ring
*ring
;
603 static const u16 ring_base
[] = { BGMAC_DMA_BASE0
, BGMAC_DMA_BASE1
,
604 BGMAC_DMA_BASE2
, BGMAC_DMA_BASE3
, };
605 int size
; /* ring size: different for Tx and Rx */
609 BUILD_BUG_ON(BGMAC_MAX_TX_RINGS
> ARRAY_SIZE(ring_base
));
610 BUILD_BUG_ON(BGMAC_MAX_RX_RINGS
> ARRAY_SIZE(ring_base
));
612 if (!(bcma_aread32(bgmac
->core
, BCMA_IOST
) & BCMA_IOST_DMA64
)) {
613 bgmac_err(bgmac
, "Core does not report 64-bit DMA\n");
617 for (i
= 0; i
< BGMAC_MAX_TX_RINGS
; i
++) {
618 ring
= &bgmac
->tx_ring
[i
];
619 ring
->num_slots
= BGMAC_TX_RING_SLOTS
;
620 ring
->mmio_base
= ring_base
[i
];
622 /* Alloc ring of descriptors */
623 size
= ring
->num_slots
* sizeof(struct bgmac_dma_desc
);
624 ring
->cpu_base
= dma_zalloc_coherent(dma_dev
, size
,
627 if (!ring
->cpu_base
) {
628 bgmac_err(bgmac
, "Allocation of TX ring 0x%X failed\n",
633 ring
->unaligned
= bgmac_dma_unaligned(bgmac
, ring
,
636 ring
->index_base
= lower_32_bits(ring
->dma_base
);
638 ring
->index_base
= 0;
640 /* No need to alloc TX slots yet */
643 for (i
= 0; i
< BGMAC_MAX_RX_RINGS
; i
++) {
644 ring
= &bgmac
->rx_ring
[i
];
645 ring
->num_slots
= BGMAC_RX_RING_SLOTS
;
646 ring
->mmio_base
= ring_base
[i
];
648 /* Alloc ring of descriptors */
649 size
= ring
->num_slots
* sizeof(struct bgmac_dma_desc
);
650 ring
->cpu_base
= dma_zalloc_coherent(dma_dev
, size
,
653 if (!ring
->cpu_base
) {
654 bgmac_err(bgmac
, "Allocation of RX ring 0x%X failed\n",
660 ring
->unaligned
= bgmac_dma_unaligned(bgmac
, ring
,
663 ring
->index_base
= lower_32_bits(ring
->dma_base
);
665 ring
->index_base
= 0;
671 bgmac_dma_free(bgmac
);
675 static int bgmac_dma_init(struct bgmac
*bgmac
)
677 struct bgmac_dma_ring
*ring
;
680 for (i
= 0; i
< BGMAC_MAX_TX_RINGS
; i
++) {
681 ring
= &bgmac
->tx_ring
[i
];
683 if (!ring
->unaligned
)
684 bgmac_dma_tx_enable(bgmac
, ring
);
685 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_RINGLO
,
686 lower_32_bits(ring
->dma_base
));
687 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_TX_RINGHI
,
688 upper_32_bits(ring
->dma_base
));
690 bgmac_dma_tx_enable(bgmac
, ring
);
693 ring
->end
= 0; /* Points the slot that should *not* be read */
696 for (i
= 0; i
< BGMAC_MAX_RX_RINGS
; i
++) {
699 ring
= &bgmac
->rx_ring
[i
];
701 if (!ring
->unaligned
)
702 bgmac_dma_rx_enable(bgmac
, ring
);
703 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_RINGLO
,
704 lower_32_bits(ring
->dma_base
));
705 bgmac_write(bgmac
, ring
->mmio_base
+ BGMAC_DMA_RX_RINGHI
,
706 upper_32_bits(ring
->dma_base
));
708 bgmac_dma_rx_enable(bgmac
, ring
);
712 for (j
= 0; j
< ring
->num_slots
; j
++) {
713 err
= bgmac_dma_rx_skb_for_slot(bgmac
, &ring
->slots
[j
]);
717 bgmac_dma_rx_setup_desc(bgmac
, ring
, j
);
720 bgmac_dma_rx_update_index(bgmac
, ring
);
726 bgmac_dma_cleanup(bgmac
);
730 /**************************************************
732 **************************************************/
734 static u16
bgmac_phy_read(struct bgmac
*bgmac
, u8 phyaddr
, u8 reg
)
736 struct bcma_device
*core
;
741 BUILD_BUG_ON(BGMAC_PA_DATA_MASK
!= BCMA_GMAC_CMN_PA_DATA_MASK
);
742 BUILD_BUG_ON(BGMAC_PA_ADDR_MASK
!= BCMA_GMAC_CMN_PA_ADDR_MASK
);
743 BUILD_BUG_ON(BGMAC_PA_ADDR_SHIFT
!= BCMA_GMAC_CMN_PA_ADDR_SHIFT
);
744 BUILD_BUG_ON(BGMAC_PA_REG_MASK
!= BCMA_GMAC_CMN_PA_REG_MASK
);
745 BUILD_BUG_ON(BGMAC_PA_REG_SHIFT
!= BCMA_GMAC_CMN_PA_REG_SHIFT
);
746 BUILD_BUG_ON(BGMAC_PA_WRITE
!= BCMA_GMAC_CMN_PA_WRITE
);
747 BUILD_BUG_ON(BGMAC_PA_START
!= BCMA_GMAC_CMN_PA_START
);
748 BUILD_BUG_ON(BGMAC_PC_EPA_MASK
!= BCMA_GMAC_CMN_PC_EPA_MASK
);
749 BUILD_BUG_ON(BGMAC_PC_MCT_MASK
!= BCMA_GMAC_CMN_PC_MCT_MASK
);
750 BUILD_BUG_ON(BGMAC_PC_MCT_SHIFT
!= BCMA_GMAC_CMN_PC_MCT_SHIFT
);
751 BUILD_BUG_ON(BGMAC_PC_MTE
!= BCMA_GMAC_CMN_PC_MTE
);
753 if (bgmac
->core
->id
.id
== BCMA_CORE_4706_MAC_GBIT
) {
754 core
= bgmac
->core
->bus
->drv_gmac_cmn
.core
;
755 phy_access_addr
= BCMA_GMAC_CMN_PHY_ACCESS
;
756 phy_ctl_addr
= BCMA_GMAC_CMN_PHY_CTL
;
759 phy_access_addr
= BGMAC_PHY_ACCESS
;
760 phy_ctl_addr
= BGMAC_PHY_CNTL
;
763 tmp
= bcma_read32(core
, phy_ctl_addr
);
764 tmp
&= ~BGMAC_PC_EPA_MASK
;
766 bcma_write32(core
, phy_ctl_addr
, tmp
);
768 tmp
= BGMAC_PA_START
;
769 tmp
|= phyaddr
<< BGMAC_PA_ADDR_SHIFT
;
770 tmp
|= reg
<< BGMAC_PA_REG_SHIFT
;
771 bcma_write32(core
, phy_access_addr
, tmp
);
773 if (!bgmac_wait_value(core
, phy_access_addr
, BGMAC_PA_START
, 0, 1000)) {
774 bgmac_err(bgmac
, "Reading PHY %d register 0x%X failed\n",
779 return bcma_read32(core
, phy_access_addr
) & BGMAC_PA_DATA_MASK
;
782 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphywr */
783 static int bgmac_phy_write(struct bgmac
*bgmac
, u8 phyaddr
, u8 reg
, u16 value
)
785 struct bcma_device
*core
;
790 if (bgmac
->core
->id
.id
== BCMA_CORE_4706_MAC_GBIT
) {
791 core
= bgmac
->core
->bus
->drv_gmac_cmn
.core
;
792 phy_access_addr
= BCMA_GMAC_CMN_PHY_ACCESS
;
793 phy_ctl_addr
= BCMA_GMAC_CMN_PHY_CTL
;
796 phy_access_addr
= BGMAC_PHY_ACCESS
;
797 phy_ctl_addr
= BGMAC_PHY_CNTL
;
800 tmp
= bcma_read32(core
, phy_ctl_addr
);
801 tmp
&= ~BGMAC_PC_EPA_MASK
;
803 bcma_write32(core
, phy_ctl_addr
, tmp
);
805 bgmac_write(bgmac
, BGMAC_INT_STATUS
, BGMAC_IS_MDIO
);
806 if (bgmac_read(bgmac
, BGMAC_INT_STATUS
) & BGMAC_IS_MDIO
)
807 bgmac_warn(bgmac
, "Error setting MDIO int\n");
809 tmp
= BGMAC_PA_START
;
810 tmp
|= BGMAC_PA_WRITE
;
811 tmp
|= phyaddr
<< BGMAC_PA_ADDR_SHIFT
;
812 tmp
|= reg
<< BGMAC_PA_REG_SHIFT
;
814 bcma_write32(core
, phy_access_addr
, tmp
);
816 if (!bgmac_wait_value(core
, phy_access_addr
, BGMAC_PA_START
, 0, 1000)) {
817 bgmac_err(bgmac
, "Writing to PHY %d register 0x%X failed\n",
825 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyinit */
826 static void bgmac_phy_init(struct bgmac
*bgmac
)
828 struct bcma_chipinfo
*ci
= &bgmac
->core
->bus
->chipinfo
;
829 struct bcma_drv_cc
*cc
= &bgmac
->core
->bus
->drv_cc
;
832 if (ci
->id
== BCMA_CHIP_ID_BCM5356
) {
833 for (i
= 0; i
< 5; i
++) {
834 bgmac_phy_write(bgmac
, i
, 0x1f, 0x008b);
835 bgmac_phy_write(bgmac
, i
, 0x15, 0x0100);
836 bgmac_phy_write(bgmac
, i
, 0x1f, 0x000f);
837 bgmac_phy_write(bgmac
, i
, 0x12, 0x2aaa);
838 bgmac_phy_write(bgmac
, i
, 0x1f, 0x000b);
841 if ((ci
->id
== BCMA_CHIP_ID_BCM5357
&& ci
->pkg
!= 10) ||
842 (ci
->id
== BCMA_CHIP_ID_BCM4749
&& ci
->pkg
!= 10) ||
843 (ci
->id
== BCMA_CHIP_ID_BCM53572
&& ci
->pkg
!= 9)) {
844 bcma_chipco_chipctl_maskset(cc
, 2, ~0xc0000000, 0);
845 bcma_chipco_chipctl_maskset(cc
, 4, ~0x80000000, 0);
846 for (i
= 0; i
< 5; i
++) {
847 bgmac_phy_write(bgmac
, i
, 0x1f, 0x000f);
848 bgmac_phy_write(bgmac
, i
, 0x16, 0x5284);
849 bgmac_phy_write(bgmac
, i
, 0x1f, 0x000b);
850 bgmac_phy_write(bgmac
, i
, 0x17, 0x0010);
851 bgmac_phy_write(bgmac
, i
, 0x1f, 0x000f);
852 bgmac_phy_write(bgmac
, i
, 0x16, 0x5296);
853 bgmac_phy_write(bgmac
, i
, 0x17, 0x1073);
854 bgmac_phy_write(bgmac
, i
, 0x17, 0x9073);
855 bgmac_phy_write(bgmac
, i
, 0x16, 0x52b6);
856 bgmac_phy_write(bgmac
, i
, 0x17, 0x9273);
857 bgmac_phy_write(bgmac
, i
, 0x1f, 0x000b);
862 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipphyreset */
863 static void bgmac_phy_reset(struct bgmac
*bgmac
)
865 if (bgmac
->phyaddr
== BGMAC_PHY_NOREGS
)
868 bgmac_phy_write(bgmac
, bgmac
->phyaddr
, MII_BMCR
, BMCR_RESET
);
870 if (bgmac_phy_read(bgmac
, bgmac
->phyaddr
, MII_BMCR
) & BMCR_RESET
)
871 bgmac_err(bgmac
, "PHY reset failed\n");
872 bgmac_phy_init(bgmac
);
875 /**************************************************
877 **************************************************/
879 /* TODO: can we just drop @force? Can we don't reset MAC at all if there is
880 * nothing to change? Try if after stabilizng driver.
882 static void bgmac_cmdcfg_maskset(struct bgmac
*bgmac
, u32 mask
, u32 set
,
885 u32 cmdcfg
= bgmac_read(bgmac
, BGMAC_CMDCFG
);
886 u32 new_val
= (cmdcfg
& mask
) | set
;
888 bgmac_set(bgmac
, BGMAC_CMDCFG
, BGMAC_CMDCFG_SR(bgmac
->core
->id
.rev
));
891 if (new_val
!= cmdcfg
|| force
)
892 bgmac_write(bgmac
, BGMAC_CMDCFG
, new_val
);
894 bgmac_mask(bgmac
, BGMAC_CMDCFG
, ~BGMAC_CMDCFG_SR(bgmac
->core
->id
.rev
));
898 static void bgmac_write_mac_address(struct bgmac
*bgmac
, u8
*addr
)
902 tmp
= (addr
[0] << 24) | (addr
[1] << 16) | (addr
[2] << 8) | addr
[3];
903 bgmac_write(bgmac
, BGMAC_MACADDR_HIGH
, tmp
);
904 tmp
= (addr
[4] << 8) | addr
[5];
905 bgmac_write(bgmac
, BGMAC_MACADDR_LOW
, tmp
);
908 static void bgmac_set_rx_mode(struct net_device
*net_dev
)
910 struct bgmac
*bgmac
= netdev_priv(net_dev
);
912 if (net_dev
->flags
& IFF_PROMISC
)
913 bgmac_cmdcfg_maskset(bgmac
, ~0, BGMAC_CMDCFG_PROM
, true);
915 bgmac_cmdcfg_maskset(bgmac
, ~BGMAC_CMDCFG_PROM
, 0, true);
918 #if 0 /* We don't use that regs yet */
919 static void bgmac_chip_stats_update(struct bgmac
*bgmac
)
923 if (bgmac
->core
->id
.id
!= BCMA_CORE_4706_MAC_GBIT
) {
924 for (i
= 0; i
< BGMAC_NUM_MIB_TX_REGS
; i
++)
925 bgmac
->mib_tx_regs
[i
] =
927 BGMAC_TX_GOOD_OCTETS
+ (i
* 4));
928 for (i
= 0; i
< BGMAC_NUM_MIB_RX_REGS
; i
++)
929 bgmac
->mib_rx_regs
[i
] =
931 BGMAC_RX_GOOD_OCTETS
+ (i
* 4));
934 /* TODO: what else? how to handle BCM4706? Specs are needed */
938 static void bgmac_clear_mib(struct bgmac
*bgmac
)
942 if (bgmac
->core
->id
.id
== BCMA_CORE_4706_MAC_GBIT
)
945 bgmac_set(bgmac
, BGMAC_DEV_CTL
, BGMAC_DC_MROR
);
946 for (i
= 0; i
< BGMAC_NUM_MIB_TX_REGS
; i
++)
947 bgmac_read(bgmac
, BGMAC_TX_GOOD_OCTETS
+ (i
* 4));
948 for (i
= 0; i
< BGMAC_NUM_MIB_RX_REGS
; i
++)
949 bgmac_read(bgmac
, BGMAC_RX_GOOD_OCTETS
+ (i
* 4));
952 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_speed */
953 static void bgmac_mac_speed(struct bgmac
*bgmac
)
955 u32 mask
= ~(BGMAC_CMDCFG_ES_MASK
| BGMAC_CMDCFG_HD
);
958 switch (bgmac
->mac_speed
) {
960 set
|= BGMAC_CMDCFG_ES_10
;
963 set
|= BGMAC_CMDCFG_ES_100
;
966 set
|= BGMAC_CMDCFG_ES_1000
;
969 set
|= BGMAC_CMDCFG_ES_2500
;
972 bgmac_err(bgmac
, "Unsupported speed: %d\n", bgmac
->mac_speed
);
975 if (bgmac
->mac_duplex
== DUPLEX_HALF
)
976 set
|= BGMAC_CMDCFG_HD
;
978 bgmac_cmdcfg_maskset(bgmac
, mask
, set
, true);
981 static void bgmac_miiconfig(struct bgmac
*bgmac
)
983 struct bcma_device
*core
= bgmac
->core
;
984 struct bcma_chipinfo
*ci
= &core
->bus
->chipinfo
;
987 if (ci
->id
== BCMA_CHIP_ID_BCM4707
||
988 ci
->id
== BCMA_CHIP_ID_BCM53018
) {
989 bcma_awrite32(core
, BCMA_IOCTL
,
990 bcma_aread32(core
, BCMA_IOCTL
) | 0x40 |
991 BGMAC_BCMA_IOCTL_SW_CLKEN
);
992 bgmac
->mac_speed
= SPEED_2500
;
993 bgmac
->mac_duplex
= DUPLEX_FULL
;
994 bgmac_mac_speed(bgmac
);
996 imode
= (bgmac_read(bgmac
, BGMAC_DEV_STATUS
) &
997 BGMAC_DS_MM_MASK
) >> BGMAC_DS_MM_SHIFT
;
998 if (imode
== 0 || imode
== 1) {
999 bgmac
->mac_speed
= SPEED_100
;
1000 bgmac
->mac_duplex
= DUPLEX_FULL
;
1001 bgmac_mac_speed(bgmac
);
1006 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipreset */
1007 static void bgmac_chip_reset(struct bgmac
*bgmac
)
1009 struct bcma_device
*core
= bgmac
->core
;
1010 struct bcma_bus
*bus
= core
->bus
;
1011 struct bcma_chipinfo
*ci
= &bus
->chipinfo
;
1016 if (bcma_core_is_enabled(core
)) {
1017 if (!bgmac
->stats_grabbed
) {
1018 /* bgmac_chip_stats_update(bgmac); */
1019 bgmac
->stats_grabbed
= true;
1022 for (i
= 0; i
< BGMAC_MAX_TX_RINGS
; i
++)
1023 bgmac_dma_tx_reset(bgmac
, &bgmac
->tx_ring
[i
]);
1025 bgmac_cmdcfg_maskset(bgmac
, ~0, BGMAC_CMDCFG_ML
, false);
1028 for (i
= 0; i
< BGMAC_MAX_RX_RINGS
; i
++)
1029 bgmac_dma_rx_reset(bgmac
, &bgmac
->rx_ring
[i
]);
1031 /* TODO: Clear software multicast filter list */
1034 iost
= bcma_aread32(core
, BCMA_IOST
);
1035 if ((ci
->id
== BCMA_CHIP_ID_BCM5357
&& ci
->pkg
== BCMA_PKG_ID_BCM47186
) ||
1036 (ci
->id
== BCMA_CHIP_ID_BCM4749
&& ci
->pkg
== 10) ||
1037 (ci
->id
== BCMA_CHIP_ID_BCM53572
&& ci
->pkg
== BCMA_PKG_ID_BCM47188
))
1038 iost
&= ~BGMAC_BCMA_IOST_ATTACHED
;
1040 /* 3GMAC: for BCM4707, only do core reset at bgmac_probe() */
1041 if (ci
->id
!= BCMA_CHIP_ID_BCM4707
) {
1043 if (iost
& BGMAC_BCMA_IOST_ATTACHED
) {
1044 flags
= BGMAC_BCMA_IOCTL_SW_CLKEN
;
1045 if (!bgmac
->has_robosw
)
1046 flags
|= BGMAC_BCMA_IOCTL_SW_RESET
;
1048 bcma_core_enable(core
, flags
);
1051 /* Request Misc PLL for corerev > 2 */
1052 if (core
->id
.rev
> 2 &&
1053 ci
->id
!= BCMA_CHIP_ID_BCM4707
&&
1054 ci
->id
!= BCMA_CHIP_ID_BCM53018
) {
1055 bgmac_set(bgmac
, BCMA_CLKCTLST
,
1056 BGMAC_BCMA_CLKCTLST_MISC_PLL_REQ
);
1057 bgmac_wait_value(bgmac
->core
, BCMA_CLKCTLST
,
1058 BGMAC_BCMA_CLKCTLST_MISC_PLL_ST
,
1059 BGMAC_BCMA_CLKCTLST_MISC_PLL_ST
,
1063 if (ci
->id
== BCMA_CHIP_ID_BCM5357
||
1064 ci
->id
== BCMA_CHIP_ID_BCM4749
||
1065 ci
->id
== BCMA_CHIP_ID_BCM53572
) {
1066 struct bcma_drv_cc
*cc
= &bgmac
->core
->bus
->drv_cc
;
1068 u8 sw_type
= BGMAC_CHIPCTL_1_SW_TYPE_EPHY
|
1069 BGMAC_CHIPCTL_1_IF_TYPE_MII
;
1072 if (bcm47xx_nvram_getenv("et_swtype", buf
, sizeof(buf
)) > 0) {
1073 if (kstrtou8(buf
, 0, &et_swtype
))
1074 bgmac_err(bgmac
, "Failed to parse et_swtype (%s)\n",
1078 sw_type
= et_swtype
;
1079 } else if (ci
->id
== BCMA_CHIP_ID_BCM5357
&& ci
->pkg
== BCMA_PKG_ID_BCM5358
) {
1080 sw_type
= BGMAC_CHIPCTL_1_SW_TYPE_EPHYRMII
;
1081 } else if ((ci
->id
== BCMA_CHIP_ID_BCM5357
&& ci
->pkg
== BCMA_PKG_ID_BCM47186
) ||
1082 (ci
->id
== BCMA_CHIP_ID_BCM4749
&& ci
->pkg
== 10) ||
1083 (ci
->id
== BCMA_CHIP_ID_BCM53572
&& ci
->pkg
== BCMA_PKG_ID_BCM47188
)) {
1084 sw_type
= BGMAC_CHIPCTL_1_IF_TYPE_RGMII
|
1085 BGMAC_CHIPCTL_1_SW_TYPE_RGMII
;
1087 bcma_chipco_chipctl_maskset(cc
, 1,
1088 ~(BGMAC_CHIPCTL_1_IF_TYPE_MASK
|
1089 BGMAC_CHIPCTL_1_SW_TYPE_MASK
),
1093 if (iost
& BGMAC_BCMA_IOST_ATTACHED
&& !bgmac
->has_robosw
)
1094 bcma_awrite32(core
, BCMA_IOCTL
,
1095 bcma_aread32(core
, BCMA_IOCTL
) &
1096 ~BGMAC_BCMA_IOCTL_SW_RESET
);
1098 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_reset
1099 * Specs don't say about using BGMAC_CMDCFG_SR, but in this routine
1100 * BGMAC_CMDCFG is read _after_ putting chip in a reset. So it has to
1101 * be keps until taking MAC out of the reset.
1103 bgmac_cmdcfg_maskset(bgmac
,
1115 BGMAC_CMDCFG_PAD_EN
|
1120 BGMAC_CMDCFG_SR(core
->id
.rev
),
1122 bgmac
->mac_speed
= SPEED_UNKNOWN
;
1123 bgmac
->mac_duplex
= DUPLEX_UNKNOWN
;
1125 bgmac_clear_mib(bgmac
);
1126 if (core
->id
.id
== BCMA_CORE_4706_MAC_GBIT
)
1127 bcma_maskset32(bgmac
->cmn
, BCMA_GMAC_CMN_PHY_CTL
, ~0,
1128 BCMA_GMAC_CMN_PC_MTE
);
1130 bgmac_set(bgmac
, BGMAC_PHY_CNTL
, BGMAC_PC_MTE
);
1131 bgmac_miiconfig(bgmac
);
1132 bgmac_phy_init(bgmac
);
1134 netdev_reset_queue(bgmac
->net_dev
);
1137 static void bgmac_chip_intrs_on(struct bgmac
*bgmac
)
1139 bgmac_write(bgmac
, BGMAC_INT_MASK
, bgmac
->int_mask
);
1142 static void bgmac_chip_intrs_off(struct bgmac
*bgmac
)
1144 bgmac_write(bgmac
, BGMAC_INT_MASK
, 0);
1145 bgmac_read(bgmac
, BGMAC_INT_MASK
);
1148 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/gmac_enable */
1149 static void bgmac_enable(struct bgmac
*bgmac
)
1151 struct bcma_chipinfo
*ci
= &bgmac
->core
->bus
->chipinfo
;
1159 cmdcfg
= bgmac_read(bgmac
, BGMAC_CMDCFG
);
1160 bgmac_cmdcfg_maskset(bgmac
, ~(BGMAC_CMDCFG_TE
| BGMAC_CMDCFG_RE
),
1161 BGMAC_CMDCFG_SR(bgmac
->core
->id
.rev
), true);
1163 cmdcfg
|= BGMAC_CMDCFG_TE
| BGMAC_CMDCFG_RE
;
1164 bgmac_write(bgmac
, BGMAC_CMDCFG
, cmdcfg
);
1166 mode
= (bgmac_read(bgmac
, BGMAC_DEV_STATUS
) & BGMAC_DS_MM_MASK
) >>
1168 if (ci
->id
!= BCMA_CHIP_ID_BCM47162
|| mode
!= 0)
1169 bgmac_set(bgmac
, BCMA_CLKCTLST
, BCMA_CLKCTLST_FORCEHT
);
1170 if (ci
->id
== BCMA_CHIP_ID_BCM47162
&& mode
== 2)
1171 bcma_chipco_chipctl_maskset(&bgmac
->core
->bus
->drv_cc
, 1, ~0,
1172 BGMAC_CHIPCTL_1_RXC_DLL_BYPASS
);
1175 case BCMA_CHIP_ID_BCM5357
:
1176 case BCMA_CHIP_ID_BCM4749
:
1177 case BCMA_CHIP_ID_BCM53572
:
1178 case BCMA_CHIP_ID_BCM4716
:
1179 case BCMA_CHIP_ID_BCM47162
:
1180 fl_ctl
= 0x03cb04cb;
1181 if (ci
->id
== BCMA_CHIP_ID_BCM5357
||
1182 ci
->id
== BCMA_CHIP_ID_BCM4749
||
1183 ci
->id
== BCMA_CHIP_ID_BCM53572
)
1185 bgmac_write(bgmac
, BGMAC_FLOW_CTL_THRESH
, fl_ctl
);
1186 bgmac_write(bgmac
, BGMAC_PAUSE_CTL
, 0x27fff);
1190 if (ci
->id
!= BCMA_CHIP_ID_BCM4707
&&
1191 ci
->id
!= BCMA_CHIP_ID_BCM53018
) {
1192 rxq_ctl
= bgmac_read(bgmac
, BGMAC_RXQ_CTL
);
1193 rxq_ctl
&= ~BGMAC_RXQ_CTL_MDP_MASK
;
1194 bp_clk
= bcma_pmu_get_bus_clock(&bgmac
->core
->bus
->drv_cc
) /
1196 mdp
= (bp_clk
* 128 / 1000) - 3;
1197 rxq_ctl
|= (mdp
<< BGMAC_RXQ_CTL_MDP_SHIFT
);
1198 bgmac_write(bgmac
, BGMAC_RXQ_CTL
, rxq_ctl
);
1202 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipinit */
1203 static void bgmac_chip_init(struct bgmac
*bgmac
)
1205 /* 1 interrupt per received frame */
1206 bgmac_write(bgmac
, BGMAC_INT_RECV_LAZY
, 1 << BGMAC_IRL_FC_SHIFT
);
1208 /* Enable 802.3x tx flow control (honor received PAUSE frames) */
1209 bgmac_cmdcfg_maskset(bgmac
, ~BGMAC_CMDCFG_RPI
, 0, true);
1211 bgmac_set_rx_mode(bgmac
->net_dev
);
1213 bgmac_write_mac_address(bgmac
, bgmac
->net_dev
->dev_addr
);
1215 if (bgmac
->loopback
)
1216 bgmac_cmdcfg_maskset(bgmac
, ~0, BGMAC_CMDCFG_ML
, false);
1218 bgmac_cmdcfg_maskset(bgmac
, ~BGMAC_CMDCFG_ML
, 0, false);
1220 bgmac_write(bgmac
, BGMAC_RXMAX_LENGTH
, 32 + ETHER_MAX_LEN
);
1222 bgmac_chip_intrs_on(bgmac
);
1224 bgmac_enable(bgmac
);
1227 static irqreturn_t
bgmac_interrupt(int irq
, void *dev_id
)
1229 struct bgmac
*bgmac
= netdev_priv(dev_id
);
1231 u32 int_status
= bgmac_read(bgmac
, BGMAC_INT_STATUS
);
1232 int_status
&= bgmac
->int_mask
;
1237 int_status
&= ~(BGMAC_IS_TX0
| BGMAC_IS_RX
);
1239 bgmac_err(bgmac
, "Unknown IRQs: 0x%08X\n", int_status
);
1241 /* Disable new interrupts until handling existing ones */
1242 bgmac_chip_intrs_off(bgmac
);
1244 napi_schedule(&bgmac
->napi
);
1249 static int bgmac_poll(struct napi_struct
*napi
, int weight
)
1251 struct bgmac
*bgmac
= container_of(napi
, struct bgmac
, napi
);
1255 bgmac_write(bgmac
, BGMAC_INT_STATUS
, ~0);
1257 bgmac_dma_tx_free(bgmac
, &bgmac
->tx_ring
[0]);
1258 handled
+= bgmac_dma_rx_read(bgmac
, &bgmac
->rx_ring
[0], weight
);
1260 /* Poll again if more events arrived in the meantime */
1261 if (bgmac_read(bgmac
, BGMAC_INT_STATUS
) & (BGMAC_IS_TX0
| BGMAC_IS_RX
))
1264 if (handled
< weight
) {
1265 napi_complete(napi
);
1266 bgmac_chip_intrs_on(bgmac
);
1272 /**************************************************
1274 **************************************************/
1276 static int bgmac_open(struct net_device
*net_dev
)
1278 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1281 bgmac_chip_reset(bgmac
);
1283 err
= bgmac_dma_init(bgmac
);
1287 /* Specs say about reclaiming rings here, but we do that in DMA init */
1288 bgmac_chip_init(bgmac
);
1290 err
= request_irq(bgmac
->core
->irq
, bgmac_interrupt
, IRQF_SHARED
,
1291 KBUILD_MODNAME
, net_dev
);
1293 bgmac_err(bgmac
, "IRQ request error: %d!\n", err
);
1294 bgmac_dma_cleanup(bgmac
);
1297 napi_enable(&bgmac
->napi
);
1299 phy_start(bgmac
->phy_dev
);
1301 netif_carrier_on(net_dev
);
1305 static int bgmac_stop(struct net_device
*net_dev
)
1307 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1309 netif_carrier_off(net_dev
);
1311 phy_stop(bgmac
->phy_dev
);
1313 napi_disable(&bgmac
->napi
);
1314 bgmac_chip_intrs_off(bgmac
);
1315 free_irq(bgmac
->core
->irq
, net_dev
);
1317 bgmac_chip_reset(bgmac
);
1318 bgmac_dma_cleanup(bgmac
);
1323 static netdev_tx_t
bgmac_start_xmit(struct sk_buff
*skb
,
1324 struct net_device
*net_dev
)
1326 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1327 struct bgmac_dma_ring
*ring
;
1329 /* No QOS support yet */
1330 ring
= &bgmac
->tx_ring
[0];
1331 return bgmac_dma_tx_add(bgmac
, ring
, skb
);
1334 static int bgmac_set_mac_address(struct net_device
*net_dev
, void *addr
)
1336 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1339 ret
= eth_prepare_mac_addr_change(net_dev
, addr
);
1342 bgmac_write_mac_address(bgmac
, (u8
*)addr
);
1343 eth_commit_mac_addr_change(net_dev
, addr
);
1347 static int bgmac_ioctl(struct net_device
*net_dev
, struct ifreq
*ifr
, int cmd
)
1349 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1351 if (!netif_running(net_dev
))
1354 return phy_mii_ioctl(bgmac
->phy_dev
, ifr
, cmd
);
1357 static const struct net_device_ops bgmac_netdev_ops
= {
1358 .ndo_open
= bgmac_open
,
1359 .ndo_stop
= bgmac_stop
,
1360 .ndo_start_xmit
= bgmac_start_xmit
,
1361 .ndo_set_rx_mode
= bgmac_set_rx_mode
,
1362 .ndo_set_mac_address
= bgmac_set_mac_address
,
1363 .ndo_validate_addr
= eth_validate_addr
,
1364 .ndo_do_ioctl
= bgmac_ioctl
,
1367 /**************************************************
1369 **************************************************/
1371 static int bgmac_get_settings(struct net_device
*net_dev
,
1372 struct ethtool_cmd
*cmd
)
1374 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1376 return phy_ethtool_gset(bgmac
->phy_dev
, cmd
);
1379 static int bgmac_set_settings(struct net_device
*net_dev
,
1380 struct ethtool_cmd
*cmd
)
1382 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1384 return phy_ethtool_sset(bgmac
->phy_dev
, cmd
);
1387 static void bgmac_get_drvinfo(struct net_device
*net_dev
,
1388 struct ethtool_drvinfo
*info
)
1390 strlcpy(info
->driver
, KBUILD_MODNAME
, sizeof(info
->driver
));
1391 strlcpy(info
->bus_info
, "BCMA", sizeof(info
->bus_info
));
1394 static const struct ethtool_ops bgmac_ethtool_ops
= {
1395 .get_settings
= bgmac_get_settings
,
1396 .set_settings
= bgmac_set_settings
,
1397 .get_drvinfo
= bgmac_get_drvinfo
,
1400 /**************************************************
1402 **************************************************/
1404 static int bgmac_mii_read(struct mii_bus
*bus
, int mii_id
, int regnum
)
1406 return bgmac_phy_read(bus
->priv
, mii_id
, regnum
);
1409 static int bgmac_mii_write(struct mii_bus
*bus
, int mii_id
, int regnum
,
1412 return bgmac_phy_write(bus
->priv
, mii_id
, regnum
, value
);
1415 static void bgmac_adjust_link(struct net_device
*net_dev
)
1417 struct bgmac
*bgmac
= netdev_priv(net_dev
);
1418 struct phy_device
*phy_dev
= bgmac
->phy_dev
;
1419 bool update
= false;
1421 if (phy_dev
->link
) {
1422 if (phy_dev
->speed
!= bgmac
->mac_speed
) {
1423 bgmac
->mac_speed
= phy_dev
->speed
;
1427 if (phy_dev
->duplex
!= bgmac
->mac_duplex
) {
1428 bgmac
->mac_duplex
= phy_dev
->duplex
;
1434 bgmac_mac_speed(bgmac
);
1435 phy_print_status(phy_dev
);
1439 static int bgmac_fixed_phy_register(struct bgmac
*bgmac
)
1441 struct fixed_phy_status fphy_status
= {
1443 .speed
= SPEED_1000
,
1444 .duplex
= DUPLEX_FULL
,
1446 struct phy_device
*phy_dev
;
1449 phy_dev
= fixed_phy_register(PHY_POLL
, &fphy_status
, NULL
);
1450 if (!phy_dev
|| IS_ERR(phy_dev
)) {
1451 bgmac_err(bgmac
, "Failed to register fixed PHY device\n");
1455 err
= phy_connect_direct(bgmac
->net_dev
, phy_dev
, bgmac_adjust_link
,
1456 PHY_INTERFACE_MODE_MII
);
1458 bgmac_err(bgmac
, "Connecting PHY failed\n");
1462 bgmac
->phy_dev
= phy_dev
;
1467 static int bgmac_mii_register(struct bgmac
*bgmac
)
1469 struct bcma_chipinfo
*ci
= &bgmac
->core
->bus
->chipinfo
;
1470 struct mii_bus
*mii_bus
;
1471 struct phy_device
*phy_dev
;
1472 char bus_id
[MII_BUS_ID_SIZE
+ 3];
1475 if (ci
->id
== BCMA_CHIP_ID_BCM4707
||
1476 ci
->id
== BCMA_CHIP_ID_BCM53018
)
1477 return bgmac_fixed_phy_register(bgmac
);
1479 mii_bus
= mdiobus_alloc();
1483 mii_bus
->name
= "bgmac mii bus";
1484 sprintf(mii_bus
->id
, "%s-%d-%d", "bgmac", bgmac
->core
->bus
->num
,
1485 bgmac
->core
->core_unit
);
1486 mii_bus
->priv
= bgmac
;
1487 mii_bus
->read
= bgmac_mii_read
;
1488 mii_bus
->write
= bgmac_mii_write
;
1489 mii_bus
->parent
= &bgmac
->core
->dev
;
1490 mii_bus
->phy_mask
= ~(1 << bgmac
->phyaddr
);
1492 mii_bus
->irq
= kmalloc_array(PHY_MAX_ADDR
, sizeof(int), GFP_KERNEL
);
1493 if (!mii_bus
->irq
) {
1497 for (i
= 0; i
< PHY_MAX_ADDR
; i
++)
1498 mii_bus
->irq
[i
] = PHY_POLL
;
1500 err
= mdiobus_register(mii_bus
);
1502 bgmac_err(bgmac
, "Registration of mii bus failed\n");
1506 bgmac
->mii_bus
= mii_bus
;
1508 /* Connect to the PHY */
1509 snprintf(bus_id
, sizeof(bus_id
), PHY_ID_FMT
, mii_bus
->id
,
1511 phy_dev
= phy_connect(bgmac
->net_dev
, bus_id
, &bgmac_adjust_link
,
1512 PHY_INTERFACE_MODE_MII
);
1513 if (IS_ERR(phy_dev
)) {
1514 bgmac_err(bgmac
, "PHY connecton failed\n");
1515 err
= PTR_ERR(phy_dev
);
1516 goto err_unregister_bus
;
1518 bgmac
->phy_dev
= phy_dev
;
1523 mdiobus_unregister(mii_bus
);
1525 kfree(mii_bus
->irq
);
1527 mdiobus_free(mii_bus
);
1531 static void bgmac_mii_unregister(struct bgmac
*bgmac
)
1533 struct mii_bus
*mii_bus
= bgmac
->mii_bus
;
1535 mdiobus_unregister(mii_bus
);
1536 kfree(mii_bus
->irq
);
1537 mdiobus_free(mii_bus
);
1540 /**************************************************
1542 **************************************************/
1544 /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipattach */
1545 static int bgmac_probe(struct bcma_device
*core
)
1547 struct bcma_chipinfo
*ci
= &core
->bus
->chipinfo
;
1548 struct net_device
*net_dev
;
1549 struct bgmac
*bgmac
;
1550 struct ssb_sprom
*sprom
= &core
->bus
->sprom
;
1551 u8
*mac
= core
->core_unit
? sprom
->et1mac
: sprom
->et0mac
;
1554 /* We don't support 2nd, 3rd, ... units, SPROM has to be adjusted */
1555 if (core
->core_unit
> 1) {
1556 pr_err("Unsupported core_unit %d\n", core
->core_unit
);
1560 if (!is_valid_ether_addr(mac
)) {
1561 dev_err(&core
->dev
, "Invalid MAC addr: %pM\n", mac
);
1562 eth_random_addr(mac
);
1563 dev_warn(&core
->dev
, "Using random MAC: %pM\n", mac
);
1566 /* Allocation and references */
1567 net_dev
= alloc_etherdev(sizeof(*bgmac
));
1570 net_dev
->netdev_ops
= &bgmac_netdev_ops
;
1571 net_dev
->irq
= core
->irq
;
1572 net_dev
->ethtool_ops
= &bgmac_ethtool_ops
;
1573 bgmac
= netdev_priv(net_dev
);
1574 bgmac
->net_dev
= net_dev
;
1576 bcma_set_drvdata(core
, bgmac
);
1579 memcpy(bgmac
->net_dev
->dev_addr
, mac
, ETH_ALEN
);
1581 /* On BCM4706 we need common core to access PHY */
1582 if (core
->id
.id
== BCMA_CORE_4706_MAC_GBIT
&&
1583 !core
->bus
->drv_gmac_cmn
.core
) {
1584 bgmac_err(bgmac
, "GMAC CMN core not found (required for BCM4706)\n");
1586 goto err_netdev_free
;
1588 bgmac
->cmn
= core
->bus
->drv_gmac_cmn
.core
;
1590 bgmac
->phyaddr
= core
->core_unit
? sprom
->et1phyaddr
:
1592 bgmac
->phyaddr
&= BGMAC_PHY_MASK
;
1593 if (bgmac
->phyaddr
== BGMAC_PHY_MASK
) {
1594 bgmac_err(bgmac
, "No PHY found\n");
1596 goto err_netdev_free
;
1598 bgmac_info(bgmac
, "Found PHY addr: %d%s\n", bgmac
->phyaddr
,
1599 bgmac
->phyaddr
== BGMAC_PHY_NOREGS
? " (NOREGS)" : "");
1601 if (core
->bus
->hosttype
== BCMA_HOSTTYPE_PCI
) {
1602 bgmac_err(bgmac
, "PCI setup not implemented\n");
1604 goto err_netdev_free
;
1607 bgmac_chip_reset(bgmac
);
1609 /* For Northstar, we have to take all GMAC core out of reset */
1610 if (ci
->id
== BCMA_CHIP_ID_BCM4707
||
1611 ci
->id
== BCMA_CHIP_ID_BCM53018
) {
1612 struct bcma_device
*ns_core
;
1615 /* Northstar has 4 GMAC cores */
1616 for (ns_gmac
= 0; ns_gmac
< 4; ns_gmac
++) {
1617 /* As Northstar requirement, we have to reset all GMACs
1618 * before accessing one. bgmac_chip_reset() call
1619 * bcma_core_enable() for this core. Then the other
1620 * three GMACs didn't reset. We do it here.
1622 ns_core
= bcma_find_core_unit(core
->bus
,
1625 if (ns_core
&& !bcma_core_is_enabled(ns_core
))
1626 bcma_core_enable(ns_core
, 0);
1630 err
= bgmac_dma_alloc(bgmac
);
1632 bgmac_err(bgmac
, "Unable to alloc memory for DMA\n");
1633 goto err_netdev_free
;
1636 bgmac
->int_mask
= BGMAC_IS_ERRMASK
| BGMAC_IS_RX
| BGMAC_IS_TX_MASK
;
1637 if (bcm47xx_nvram_getenv("et0_no_txint", NULL
, 0) == 0)
1638 bgmac
->int_mask
&= ~BGMAC_IS_TX_MASK
;
1640 /* TODO: reset the external phy. Specs are needed */
1641 bgmac_phy_reset(bgmac
);
1643 bgmac
->has_robosw
= !!(core
->bus
->sprom
.boardflags_lo
&
1644 BGMAC_BFL_ENETROBO
);
1645 if (bgmac
->has_robosw
)
1646 bgmac_warn(bgmac
, "Support for Roboswitch not implemented\n");
1648 if (core
->bus
->sprom
.boardflags_lo
& BGMAC_BFL_ENETADM
)
1649 bgmac_warn(bgmac
, "Support for ADMtek ethernet switch not implemented\n");
1651 netif_napi_add(net_dev
, &bgmac
->napi
, bgmac_poll
, BGMAC_WEIGHT
);
1653 err
= bgmac_mii_register(bgmac
);
1655 bgmac_err(bgmac
, "Cannot register MDIO\n");
1659 net_dev
->features
= NETIF_F_SG
| NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
;
1660 net_dev
->hw_features
= net_dev
->features
;
1661 net_dev
->vlan_features
= net_dev
->features
;
1663 err
= register_netdev(bgmac
->net_dev
);
1665 bgmac_err(bgmac
, "Cannot register net device\n");
1666 goto err_mii_unregister
;
1669 netif_carrier_off(net_dev
);
1674 bgmac_mii_unregister(bgmac
);
1676 bgmac_dma_free(bgmac
);
1679 bcma_set_drvdata(core
, NULL
);
1680 free_netdev(net_dev
);
1685 static void bgmac_remove(struct bcma_device
*core
)
1687 struct bgmac
*bgmac
= bcma_get_drvdata(core
);
1689 unregister_netdev(bgmac
->net_dev
);
1690 bgmac_mii_unregister(bgmac
);
1691 netif_napi_del(&bgmac
->napi
);
1692 bgmac_dma_free(bgmac
);
1693 bcma_set_drvdata(core
, NULL
);
1694 free_netdev(bgmac
->net_dev
);
1697 static struct bcma_driver bgmac_bcma_driver
= {
1698 .name
= KBUILD_MODNAME
,
1699 .id_table
= bgmac_bcma_tbl
,
1700 .probe
= bgmac_probe
,
1701 .remove
= bgmac_remove
,
1704 static int __init
bgmac_init(void)
1708 err
= bcma_driver_register(&bgmac_bcma_driver
);
1711 pr_info("Broadcom 47xx GBit MAC driver loaded\n");
1716 static void __exit
bgmac_exit(void)
1718 bcma_driver_unregister(&bgmac_bcma_driver
);
1721 module_init(bgmac_init
)
1722 module_exit(bgmac_exit
)
1724 MODULE_AUTHOR("Rafał Miłecki");
1725 MODULE_LICENSE("GPL");