2 * Driver for Marvell Discovery (MV643XX) and Marvell Orion ethernet ports
3 * Copyright (C) 2002 Matthew Dharm <mdharm@momenco.com>
5 * Based on the 64360 driver from:
6 * Copyright (C) 2002 Rabeeh Khoury <rabeeh@galileo.co.il>
7 * Rabeeh Khoury <rabeeh@marvell.com>
9 * Copyright (C) 2003 PMC-Sierra, Inc.,
10 * written by Manish Lachwani
12 * Copyright (C) 2003 Ralf Baechle <ralf@linux-mips.org>
14 * Copyright (C) 2004-2006 MontaVista Software, Inc.
15 * Dale Farnsworth <dale@farnsworth.org>
17 * Copyright (C) 2004 Steven J. Hill <sjhill1@rockwellcollins.com>
18 * <sjhill@realitydiluted.com>
20 * Copyright (C) 2007-2008 Marvell Semiconductor
21 * Lennert Buytenhek <buytenh@marvell.com>
23 * This program is free software; you can redistribute it and/or
24 * modify it under the terms of the GNU General Public License
25 * as published by the Free Software Foundation; either version 2
26 * of the License, or (at your option) any later version.
28 * This program is distributed in the hope that it will be useful,
29 * but WITHOUT ANY WARRANTY; without even the implied warranty of
30 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
31 * GNU General Public License for more details.
33 * You should have received a copy of the GNU General Public License
34 * along with this program; if not, write to the Free Software
35 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
38 #include <linux/init.h>
39 #include <linux/dma-mapping.h>
42 #include <linux/tcp.h>
43 #include <linux/udp.h>
44 #include <linux/etherdevice.h>
45 #include <linux/delay.h>
46 #include <linux/ethtool.h>
47 #include <linux/platform_device.h>
48 #include <linux/module.h>
49 #include <linux/kernel.h>
50 #include <linux/spinlock.h>
51 #include <linux/workqueue.h>
52 #include <linux/phy.h>
53 #include <linux/mv643xx_eth.h>
55 #include <linux/types.h>
56 #include <asm/system.h>
58 static char mv643xx_eth_driver_name
[] = "mv643xx_eth";
59 static char mv643xx_eth_driver_version
[] = "1.4";
63 * Registers shared between all ports.
65 #define PHY_ADDR 0x0000
66 #define SMI_REG 0x0004
67 #define SMI_BUSY 0x10000000
68 #define SMI_READ_VALID 0x08000000
69 #define SMI_OPCODE_READ 0x04000000
70 #define SMI_OPCODE_WRITE 0x00000000
71 #define ERR_INT_CAUSE 0x0080
72 #define ERR_INT_SMI_DONE 0x00000010
73 #define ERR_INT_MASK 0x0084
74 #define WINDOW_BASE(w) (0x0200 + ((w) << 3))
75 #define WINDOW_SIZE(w) (0x0204 + ((w) << 3))
76 #define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2))
77 #define WINDOW_BAR_ENABLE 0x0290
78 #define WINDOW_PROTECT(w) (0x0294 + ((w) << 4))
81 * Main per-port registers. These live at offset 0x0400 for
82 * port #0, 0x0800 for port #1, and 0x0c00 for port #2.
84 #define PORT_CONFIG 0x0000
85 #define UNICAST_PROMISCUOUS_MODE 0x00000001
86 #define PORT_CONFIG_EXT 0x0004
87 #define MAC_ADDR_LOW 0x0014
88 #define MAC_ADDR_HIGH 0x0018
89 #define SDMA_CONFIG 0x001c
90 #define PORT_SERIAL_CONTROL 0x003c
91 #define PORT_STATUS 0x0044
92 #define TX_FIFO_EMPTY 0x00000400
93 #define TX_IN_PROGRESS 0x00000080
94 #define PORT_SPEED_MASK 0x00000030
95 #define PORT_SPEED_1000 0x00000010
96 #define PORT_SPEED_100 0x00000020
97 #define PORT_SPEED_10 0x00000000
98 #define FLOW_CONTROL_ENABLED 0x00000008
99 #define FULL_DUPLEX 0x00000004
100 #define LINK_UP 0x00000002
101 #define TXQ_COMMAND 0x0048
102 #define TXQ_FIX_PRIO_CONF 0x004c
103 #define TX_BW_RATE 0x0050
104 #define TX_BW_MTU 0x0058
105 #define TX_BW_BURST 0x005c
106 #define INT_CAUSE 0x0060
107 #define INT_TX_END 0x07f80000
108 #define INT_RX 0x000003fc
109 #define INT_EXT 0x00000002
110 #define INT_CAUSE_EXT 0x0064
111 #define INT_EXT_LINK_PHY 0x00110000
112 #define INT_EXT_TX 0x000000ff
113 #define INT_MASK 0x0068
114 #define INT_MASK_EXT 0x006c
115 #define TX_FIFO_URGENT_THRESHOLD 0x0074
116 #define TXQ_FIX_PRIO_CONF_MOVED 0x00dc
117 #define TX_BW_RATE_MOVED 0x00e0
118 #define TX_BW_MTU_MOVED 0x00e8
119 #define TX_BW_BURST_MOVED 0x00ec
120 #define RXQ_CURRENT_DESC_PTR(q) (0x020c + ((q) << 4))
121 #define RXQ_COMMAND 0x0280
122 #define TXQ_CURRENT_DESC_PTR(q) (0x02c0 + ((q) << 2))
123 #define TXQ_BW_TOKENS(q) (0x0300 + ((q) << 4))
124 #define TXQ_BW_CONF(q) (0x0304 + ((q) << 4))
125 #define TXQ_BW_WRR_CONF(q) (0x0308 + ((q) << 4))
128 * Misc per-port registers.
130 #define MIB_COUNTERS(p) (0x1000 + ((p) << 7))
131 #define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10))
132 #define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10))
133 #define UNICAST_TABLE(p) (0x1600 + ((p) << 10))
137 * SDMA configuration register.
139 #define RX_BURST_SIZE_4_64BIT (2 << 1)
140 #define RX_BURST_SIZE_16_64BIT (4 << 1)
141 #define BLM_RX_NO_SWAP (1 << 4)
142 #define BLM_TX_NO_SWAP (1 << 5)
143 #define TX_BURST_SIZE_4_64BIT (2 << 22)
144 #define TX_BURST_SIZE_16_64BIT (4 << 22)
146 #if defined(__BIG_ENDIAN)
147 #define PORT_SDMA_CONFIG_DEFAULT_VALUE \
148 (RX_BURST_SIZE_4_64BIT | \
149 TX_BURST_SIZE_4_64BIT)
150 #elif defined(__LITTLE_ENDIAN)
151 #define PORT_SDMA_CONFIG_DEFAULT_VALUE \
152 (RX_BURST_SIZE_4_64BIT | \
155 TX_BURST_SIZE_4_64BIT)
157 #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
162 * Port serial control register.
164 #define SET_MII_SPEED_TO_100 (1 << 24)
165 #define SET_GMII_SPEED_TO_1000 (1 << 23)
166 #define SET_FULL_DUPLEX_MODE (1 << 21)
167 #define MAX_RX_PACKET_9700BYTE (5 << 17)
168 #define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13)
169 #define DO_NOT_FORCE_LINK_FAIL (1 << 10)
170 #define SERIAL_PORT_CONTROL_RESERVED (1 << 9)
171 #define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3)
172 #define DISABLE_AUTO_NEG_FOR_DUPLEX (1 << 2)
173 #define FORCE_LINK_PASS (1 << 1)
174 #define SERIAL_PORT_ENABLE (1 << 0)
176 #define DEFAULT_RX_QUEUE_SIZE 128
177 #define DEFAULT_TX_QUEUE_SIZE 256
183 #if defined(__BIG_ENDIAN)
185 u16 byte_cnt
; /* Descriptor buffer byte count */
186 u16 buf_size
; /* Buffer size */
187 u32 cmd_sts
; /* Descriptor command status */
188 u32 next_desc_ptr
; /* Next descriptor pointer */
189 u32 buf_ptr
; /* Descriptor buffer pointer */
193 u16 byte_cnt
; /* buffer byte count */
194 u16 l4i_chk
; /* CPU provided TCP checksum */
195 u32 cmd_sts
; /* Command/status field */
196 u32 next_desc_ptr
; /* Pointer to next descriptor */
197 u32 buf_ptr
; /* pointer to buffer for this descriptor*/
199 #elif defined(__LITTLE_ENDIAN)
201 u32 cmd_sts
; /* Descriptor command status */
202 u16 buf_size
; /* Buffer size */
203 u16 byte_cnt
; /* Descriptor buffer byte count */
204 u32 buf_ptr
; /* Descriptor buffer pointer */
205 u32 next_desc_ptr
; /* Next descriptor pointer */
209 u32 cmd_sts
; /* Command/status field */
210 u16 l4i_chk
; /* CPU provided TCP checksum */
211 u16 byte_cnt
; /* buffer byte count */
212 u32 buf_ptr
; /* pointer to buffer for this descriptor*/
213 u32 next_desc_ptr
; /* Pointer to next descriptor */
216 #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
219 /* RX & TX descriptor command */
220 #define BUFFER_OWNED_BY_DMA 0x80000000
222 /* RX & TX descriptor status */
223 #define ERROR_SUMMARY 0x00000001
225 /* RX descriptor status */
226 #define LAYER_4_CHECKSUM_OK 0x40000000
227 #define RX_ENABLE_INTERRUPT 0x20000000
228 #define RX_FIRST_DESC 0x08000000
229 #define RX_LAST_DESC 0x04000000
231 /* TX descriptor command */
232 #define TX_ENABLE_INTERRUPT 0x00800000
233 #define GEN_CRC 0x00400000
234 #define TX_FIRST_DESC 0x00200000
235 #define TX_LAST_DESC 0x00100000
236 #define ZERO_PADDING 0x00080000
237 #define GEN_IP_V4_CHECKSUM 0x00040000
238 #define GEN_TCP_UDP_CHECKSUM 0x00020000
239 #define UDP_FRAME 0x00010000
240 #define MAC_HDR_EXTRA_4_BYTES 0x00008000
241 #define MAC_HDR_EXTRA_8_BYTES 0x00000200
243 #define TX_IHL_SHIFT 11
246 /* global *******************************************************************/
247 struct mv643xx_eth_shared_private
{
249 * Ethernet controller base address.
254 * Points at the right SMI instance to use.
256 struct mv643xx_eth_shared_private
*smi
;
259 * Provides access to local SMI interface.
261 struct mii_bus
*smi_bus
;
264 * If we have access to the error interrupt pin (which is
265 * somewhat misnamed as it not only reflects internal errors
266 * but also reflects SMI completion), use that to wait for
267 * SMI access completion instead of polling the SMI busy bit.
270 wait_queue_head_t smi_busy_wait
;
273 * Per-port MBUS window access register value.
278 * Hardware-specific parameters.
281 int extended_rx_coal_limit
;
285 #define TX_BW_CONTROL_ABSENT 0
286 #define TX_BW_CONTROL_OLD_LAYOUT 1
287 #define TX_BW_CONTROL_NEW_LAYOUT 2
290 /* per-port *****************************************************************/
291 struct mib_counters
{
292 u64 good_octets_received
;
293 u32 bad_octets_received
;
294 u32 internal_mac_transmit_err
;
295 u32 good_frames_received
;
296 u32 bad_frames_received
;
297 u32 broadcast_frames_received
;
298 u32 multicast_frames_received
;
299 u32 frames_64_octets
;
300 u32 frames_65_to_127_octets
;
301 u32 frames_128_to_255_octets
;
302 u32 frames_256_to_511_octets
;
303 u32 frames_512_to_1023_octets
;
304 u32 frames_1024_to_max_octets
;
305 u64 good_octets_sent
;
306 u32 good_frames_sent
;
307 u32 excessive_collision
;
308 u32 multicast_frames_sent
;
309 u32 broadcast_frames_sent
;
310 u32 unrec_mac_control_received
;
312 u32 good_fc_received
;
314 u32 undersize_received
;
315 u32 fragments_received
;
316 u32 oversize_received
;
318 u32 mac_receive_error
;
333 struct rx_desc
*rx_desc_area
;
334 dma_addr_t rx_desc_dma
;
335 int rx_desc_area_size
;
336 struct sk_buff
**rx_skb
;
348 struct tx_desc
*tx_desc_area
;
349 dma_addr_t tx_desc_dma
;
350 int tx_desc_area_size
;
352 struct sk_buff_head tx_skb
;
354 unsigned long tx_packets
;
355 unsigned long tx_bytes
;
356 unsigned long tx_dropped
;
359 struct mv643xx_eth_private
{
360 struct mv643xx_eth_shared_private
*shared
;
364 struct net_device
*dev
;
366 struct phy_device
*phy
;
368 struct timer_list mib_counters_timer
;
369 spinlock_t mib_counters_lock
;
370 struct mib_counters mib_counters
;
372 struct work_struct tx_timeout_task
;
374 struct napi_struct napi
;
383 struct sk_buff_head rx_recycle
;
388 int default_rx_ring_size
;
389 unsigned long rx_desc_sram_addr
;
390 int rx_desc_sram_size
;
392 struct timer_list rx_oom
;
393 struct rx_queue rxq
[8];
398 int default_tx_ring_size
;
399 unsigned long tx_desc_sram_addr
;
400 int tx_desc_sram_size
;
402 struct tx_queue txq
[8];
406 /* port register accessors **************************************************/
407 static inline u32
rdl(struct mv643xx_eth_private
*mp
, int offset
)
409 return readl(mp
->shared
->base
+ offset
);
412 static inline u32
rdlp(struct mv643xx_eth_private
*mp
, int offset
)
414 return readl(mp
->base
+ offset
);
417 static inline void wrl(struct mv643xx_eth_private
*mp
, int offset
, u32 data
)
419 writel(data
, mp
->shared
->base
+ offset
);
422 static inline void wrlp(struct mv643xx_eth_private
*mp
, int offset
, u32 data
)
424 writel(data
, mp
->base
+ offset
);
428 /* rxq/txq helper functions *************************************************/
429 static struct mv643xx_eth_private
*rxq_to_mp(struct rx_queue
*rxq
)
431 return container_of(rxq
, struct mv643xx_eth_private
, rxq
[rxq
->index
]);
434 static struct mv643xx_eth_private
*txq_to_mp(struct tx_queue
*txq
)
436 return container_of(txq
, struct mv643xx_eth_private
, txq
[txq
->index
]);
439 static void rxq_enable(struct rx_queue
*rxq
)
441 struct mv643xx_eth_private
*mp
= rxq_to_mp(rxq
);
442 wrlp(mp
, RXQ_COMMAND
, 1 << rxq
->index
);
445 static void rxq_disable(struct rx_queue
*rxq
)
447 struct mv643xx_eth_private
*mp
= rxq_to_mp(rxq
);
448 u8 mask
= 1 << rxq
->index
;
450 wrlp(mp
, RXQ_COMMAND
, mask
<< 8);
451 while (rdlp(mp
, RXQ_COMMAND
) & mask
)
455 static void txq_reset_hw_ptr(struct tx_queue
*txq
)
457 struct mv643xx_eth_private
*mp
= txq_to_mp(txq
);
460 addr
= (u32
)txq
->tx_desc_dma
;
461 addr
+= txq
->tx_curr_desc
* sizeof(struct tx_desc
);
462 wrlp(mp
, TXQ_CURRENT_DESC_PTR(txq
->index
), addr
);
465 static void txq_enable(struct tx_queue
*txq
)
467 struct mv643xx_eth_private
*mp
= txq_to_mp(txq
);
468 wrlp(mp
, TXQ_COMMAND
, 1 << txq
->index
);
471 static void txq_disable(struct tx_queue
*txq
)
473 struct mv643xx_eth_private
*mp
= txq_to_mp(txq
);
474 u8 mask
= 1 << txq
->index
;
476 wrlp(mp
, TXQ_COMMAND
, mask
<< 8);
477 while (rdlp(mp
, TXQ_COMMAND
) & mask
)
481 static void txq_maybe_wake(struct tx_queue
*txq
)
483 struct mv643xx_eth_private
*mp
= txq_to_mp(txq
);
484 struct netdev_queue
*nq
= netdev_get_tx_queue(mp
->dev
, txq
->index
);
486 if (netif_tx_queue_stopped(nq
)) {
487 __netif_tx_lock(nq
, smp_processor_id());
488 if (txq
->tx_ring_size
- txq
->tx_desc_count
>= MAX_SKB_FRAGS
+ 1)
489 netif_tx_wake_queue(nq
);
490 __netif_tx_unlock(nq
);
495 /* rx napi ******************************************************************/
496 static int rxq_process(struct rx_queue
*rxq
, int budget
)
498 struct mv643xx_eth_private
*mp
= rxq_to_mp(rxq
);
499 struct net_device_stats
*stats
= &mp
->dev
->stats
;
503 while (rx
< budget
&& rxq
->rx_desc_count
) {
504 struct rx_desc
*rx_desc
;
505 unsigned int cmd_sts
;
509 rx_desc
= &rxq
->rx_desc_area
[rxq
->rx_curr_desc
];
511 cmd_sts
= rx_desc
->cmd_sts
;
512 if (cmd_sts
& BUFFER_OWNED_BY_DMA
)
516 skb
= rxq
->rx_skb
[rxq
->rx_curr_desc
];
517 rxq
->rx_skb
[rxq
->rx_curr_desc
] = NULL
;
520 if (rxq
->rx_curr_desc
== rxq
->rx_ring_size
)
521 rxq
->rx_curr_desc
= 0;
523 dma_unmap_single(NULL
, rx_desc
->buf_ptr
,
524 rx_desc
->buf_size
, DMA_FROM_DEVICE
);
525 rxq
->rx_desc_count
--;
528 mp
->work_rx_refill
|= 1 << rxq
->index
;
530 byte_cnt
= rx_desc
->byte_cnt
;
535 * Note that the descriptor byte count includes 2 dummy
536 * bytes automatically inserted by the hardware at the
537 * start of the packet (which we don't count), and a 4
538 * byte CRC at the end of the packet (which we do count).
541 stats
->rx_bytes
+= byte_cnt
- 2;
544 * In case we received a packet without first / last bits
545 * on, or the error summary bit is set, the packet needs
548 if ((cmd_sts
& (RX_FIRST_DESC
| RX_LAST_DESC
| ERROR_SUMMARY
))
549 != (RX_FIRST_DESC
| RX_LAST_DESC
))
553 * The -4 is for the CRC in the trailer of the
556 skb_put(skb
, byte_cnt
- 2 - 4);
558 if (cmd_sts
& LAYER_4_CHECKSUM_OK
)
559 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
560 skb
->protocol
= eth_type_trans(skb
, mp
->dev
);
561 netif_receive_skb(skb
);
568 if ((cmd_sts
& (RX_FIRST_DESC
| RX_LAST_DESC
)) !=
569 (RX_FIRST_DESC
| RX_LAST_DESC
)) {
571 dev_printk(KERN_ERR
, &mp
->dev
->dev
,
572 "received packet spanning "
573 "multiple descriptors\n");
576 if (cmd_sts
& ERROR_SUMMARY
)
583 mp
->work_rx
&= ~(1 << rxq
->index
);
588 static int rxq_refill(struct rx_queue
*rxq
, int budget
)
590 struct mv643xx_eth_private
*mp
= rxq_to_mp(rxq
);
594 while (refilled
< budget
&& rxq
->rx_desc_count
< rxq
->rx_ring_size
) {
598 struct rx_desc
*rx_desc
;
600 skb
= __skb_dequeue(&mp
->rx_recycle
);
602 skb
= dev_alloc_skb(mp
->skb_size
+
603 dma_get_cache_alignment() - 1);
606 mp
->work_rx_oom
|= 1 << rxq
->index
;
610 unaligned
= (u32
)skb
->data
& (dma_get_cache_alignment() - 1);
612 skb_reserve(skb
, dma_get_cache_alignment() - unaligned
);
615 rxq
->rx_desc_count
++;
617 rx
= rxq
->rx_used_desc
++;
618 if (rxq
->rx_used_desc
== rxq
->rx_ring_size
)
619 rxq
->rx_used_desc
= 0;
621 rx_desc
= rxq
->rx_desc_area
+ rx
;
623 rx_desc
->buf_ptr
= dma_map_single(NULL
, skb
->data
,
624 mp
->skb_size
, DMA_FROM_DEVICE
);
625 rx_desc
->buf_size
= mp
->skb_size
;
626 rxq
->rx_skb
[rx
] = skb
;
628 rx_desc
->cmd_sts
= BUFFER_OWNED_BY_DMA
| RX_ENABLE_INTERRUPT
;
632 * The hardware automatically prepends 2 bytes of
633 * dummy data to each received packet, so that the
634 * IP header ends up 16-byte aligned.
639 if (refilled
< budget
)
640 mp
->work_rx_refill
&= ~(1 << rxq
->index
);
647 /* tx ***********************************************************************/
648 static inline unsigned int has_tiny_unaligned_frags(struct sk_buff
*skb
)
652 for (frag
= 0; frag
< skb_shinfo(skb
)->nr_frags
; frag
++) {
653 skb_frag_t
*fragp
= &skb_shinfo(skb
)->frags
[frag
];
654 if (fragp
->size
<= 8 && fragp
->page_offset
& 7)
661 static void txq_submit_frag_skb(struct tx_queue
*txq
, struct sk_buff
*skb
)
663 int nr_frags
= skb_shinfo(skb
)->nr_frags
;
666 for (frag
= 0; frag
< nr_frags
; frag
++) {
667 skb_frag_t
*this_frag
;
669 struct tx_desc
*desc
;
671 this_frag
= &skb_shinfo(skb
)->frags
[frag
];
672 tx_index
= txq
->tx_curr_desc
++;
673 if (txq
->tx_curr_desc
== txq
->tx_ring_size
)
674 txq
->tx_curr_desc
= 0;
675 desc
= &txq
->tx_desc_area
[tx_index
];
678 * The last fragment will generate an interrupt
679 * which will free the skb on TX completion.
681 if (frag
== nr_frags
- 1) {
682 desc
->cmd_sts
= BUFFER_OWNED_BY_DMA
|
683 ZERO_PADDING
| TX_LAST_DESC
|
686 desc
->cmd_sts
= BUFFER_OWNED_BY_DMA
;
690 desc
->byte_cnt
= this_frag
->size
;
691 desc
->buf_ptr
= dma_map_page(NULL
, this_frag
->page
,
692 this_frag
->page_offset
,
698 static inline __be16
sum16_as_be(__sum16 sum
)
700 return (__force __be16
)sum
;
703 static int txq_submit_skb(struct tx_queue
*txq
, struct sk_buff
*skb
)
705 struct mv643xx_eth_private
*mp
= txq_to_mp(txq
);
706 int nr_frags
= skb_shinfo(skb
)->nr_frags
;
708 struct tx_desc
*desc
;
713 cmd_sts
= TX_FIRST_DESC
| GEN_CRC
| BUFFER_OWNED_BY_DMA
;
716 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
719 BUG_ON(skb
->protocol
!= htons(ETH_P_IP
) &&
720 skb
->protocol
!= htons(ETH_P_8021Q
));
722 tag_bytes
= (void *)ip_hdr(skb
) - (void *)skb
->data
- ETH_HLEN
;
723 if (unlikely(tag_bytes
& ~12)) {
724 if (skb_checksum_help(skb
) == 0)
731 cmd_sts
|= MAC_HDR_EXTRA_4_BYTES
;
733 cmd_sts
|= MAC_HDR_EXTRA_8_BYTES
;
735 cmd_sts
|= GEN_TCP_UDP_CHECKSUM
|
737 ip_hdr(skb
)->ihl
<< TX_IHL_SHIFT
;
739 switch (ip_hdr(skb
)->protocol
) {
741 cmd_sts
|= UDP_FRAME
;
742 l4i_chk
= ntohs(sum16_as_be(udp_hdr(skb
)->check
));
745 l4i_chk
= ntohs(sum16_as_be(tcp_hdr(skb
)->check
));
752 /* Errata BTS #50, IHL must be 5 if no HW checksum */
753 cmd_sts
|= 5 << TX_IHL_SHIFT
;
756 tx_index
= txq
->tx_curr_desc
++;
757 if (txq
->tx_curr_desc
== txq
->tx_ring_size
)
758 txq
->tx_curr_desc
= 0;
759 desc
= &txq
->tx_desc_area
[tx_index
];
762 txq_submit_frag_skb(txq
, skb
);
763 length
= skb_headlen(skb
);
765 cmd_sts
|= ZERO_PADDING
| TX_LAST_DESC
| TX_ENABLE_INTERRUPT
;
769 desc
->l4i_chk
= l4i_chk
;
770 desc
->byte_cnt
= length
;
771 desc
->buf_ptr
= dma_map_single(NULL
, skb
->data
, length
, DMA_TO_DEVICE
);
773 __skb_queue_tail(&txq
->tx_skb
, skb
);
775 /* ensure all other descriptors are written before first cmd_sts */
777 desc
->cmd_sts
= cmd_sts
;
779 /* clear TX_END status */
780 mp
->work_tx_end
&= ~(1 << txq
->index
);
782 /* ensure all descriptors are written before poking hardware */
786 txq
->tx_desc_count
+= nr_frags
+ 1;
791 static int mv643xx_eth_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
793 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
795 struct tx_queue
*txq
;
796 struct netdev_queue
*nq
;
798 queue
= skb_get_queue_mapping(skb
);
799 txq
= mp
->txq
+ queue
;
800 nq
= netdev_get_tx_queue(dev
, queue
);
802 if (has_tiny_unaligned_frags(skb
) && __skb_linearize(skb
)) {
804 dev_printk(KERN_DEBUG
, &dev
->dev
,
805 "failed to linearize skb with tiny "
806 "unaligned fragment\n");
807 return NETDEV_TX_BUSY
;
810 if (txq
->tx_ring_size
- txq
->tx_desc_count
< MAX_SKB_FRAGS
+ 1) {
812 dev_printk(KERN_ERR
, &dev
->dev
, "tx queue full?!\n");
817 if (!txq_submit_skb(txq
, skb
)) {
820 txq
->tx_bytes
+= skb
->len
;
822 dev
->trans_start
= jiffies
;
824 entries_left
= txq
->tx_ring_size
- txq
->tx_desc_count
;
825 if (entries_left
< MAX_SKB_FRAGS
+ 1)
826 netif_tx_stop_queue(nq
);
833 /* tx napi ******************************************************************/
834 static void txq_kick(struct tx_queue
*txq
)
836 struct mv643xx_eth_private
*mp
= txq_to_mp(txq
);
837 struct netdev_queue
*nq
= netdev_get_tx_queue(mp
->dev
, txq
->index
);
841 __netif_tx_lock(nq
, smp_processor_id());
843 if (rdlp(mp
, TXQ_COMMAND
) & (1 << txq
->index
))
846 hw_desc_ptr
= rdlp(mp
, TXQ_CURRENT_DESC_PTR(txq
->index
));
847 expected_ptr
= (u32
)txq
->tx_desc_dma
+
848 txq
->tx_curr_desc
* sizeof(struct tx_desc
);
850 if (hw_desc_ptr
!= expected_ptr
)
854 __netif_tx_unlock(nq
);
856 mp
->work_tx_end
&= ~(1 << txq
->index
);
859 static int txq_reclaim(struct tx_queue
*txq
, int budget
, int force
)
861 struct mv643xx_eth_private
*mp
= txq_to_mp(txq
);
862 struct netdev_queue
*nq
= netdev_get_tx_queue(mp
->dev
, txq
->index
);
865 __netif_tx_lock(nq
, smp_processor_id());
868 while (reclaimed
< budget
&& txq
->tx_desc_count
> 0) {
870 struct tx_desc
*desc
;
874 tx_index
= txq
->tx_used_desc
;
875 desc
= &txq
->tx_desc_area
[tx_index
];
876 cmd_sts
= desc
->cmd_sts
;
878 if (cmd_sts
& BUFFER_OWNED_BY_DMA
) {
881 desc
->cmd_sts
= cmd_sts
& ~BUFFER_OWNED_BY_DMA
;
884 txq
->tx_used_desc
= tx_index
+ 1;
885 if (txq
->tx_used_desc
== txq
->tx_ring_size
)
886 txq
->tx_used_desc
= 0;
889 txq
->tx_desc_count
--;
892 if (cmd_sts
& TX_LAST_DESC
)
893 skb
= __skb_dequeue(&txq
->tx_skb
);
895 if (cmd_sts
& ERROR_SUMMARY
) {
896 dev_printk(KERN_INFO
, &mp
->dev
->dev
, "tx error\n");
897 mp
->dev
->stats
.tx_errors
++;
900 if (cmd_sts
& TX_FIRST_DESC
) {
901 dma_unmap_single(NULL
, desc
->buf_ptr
,
902 desc
->byte_cnt
, DMA_TO_DEVICE
);
904 dma_unmap_page(NULL
, desc
->buf_ptr
,
905 desc
->byte_cnt
, DMA_TO_DEVICE
);
909 if (skb_queue_len(&mp
->rx_recycle
) <
910 mp
->default_rx_ring_size
&&
911 skb_recycle_check(skb
, mp
->skb_size
+
912 dma_get_cache_alignment() - 1))
913 __skb_queue_head(&mp
->rx_recycle
, skb
);
919 __netif_tx_unlock(nq
);
921 if (reclaimed
< budget
)
922 mp
->work_tx
&= ~(1 << txq
->index
);
928 /* tx rate control **********************************************************/
930 * Set total maximum TX rate (shared by all TX queues for this port)
931 * to 'rate' bits per second, with a maximum burst of 'burst' bytes.
933 static void tx_set_rate(struct mv643xx_eth_private
*mp
, int rate
, int burst
)
939 token_rate
= ((rate
/ 1000) * 64) / (mp
->shared
->t_clk
/ 1000);
940 if (token_rate
> 1023)
943 mtu
= (mp
->dev
->mtu
+ 255) >> 8;
947 bucket_size
= (burst
+ 255) >> 8;
948 if (bucket_size
> 65535)
951 switch (mp
->shared
->tx_bw_control
) {
952 case TX_BW_CONTROL_OLD_LAYOUT
:
953 wrlp(mp
, TX_BW_RATE
, token_rate
);
954 wrlp(mp
, TX_BW_MTU
, mtu
);
955 wrlp(mp
, TX_BW_BURST
, bucket_size
);
957 case TX_BW_CONTROL_NEW_LAYOUT
:
958 wrlp(mp
, TX_BW_RATE_MOVED
, token_rate
);
959 wrlp(mp
, TX_BW_MTU_MOVED
, mtu
);
960 wrlp(mp
, TX_BW_BURST_MOVED
, bucket_size
);
965 static void txq_set_rate(struct tx_queue
*txq
, int rate
, int burst
)
967 struct mv643xx_eth_private
*mp
= txq_to_mp(txq
);
971 token_rate
= ((rate
/ 1000) * 64) / (mp
->shared
->t_clk
/ 1000);
972 if (token_rate
> 1023)
975 bucket_size
= (burst
+ 255) >> 8;
976 if (bucket_size
> 65535)
979 wrlp(mp
, TXQ_BW_TOKENS(txq
->index
), token_rate
<< 14);
980 wrlp(mp
, TXQ_BW_CONF(txq
->index
), (bucket_size
<< 10) | token_rate
);
983 static void txq_set_fixed_prio_mode(struct tx_queue
*txq
)
985 struct mv643xx_eth_private
*mp
= txq_to_mp(txq
);
990 * Turn on fixed priority mode.
993 switch (mp
->shared
->tx_bw_control
) {
994 case TX_BW_CONTROL_OLD_LAYOUT
:
995 off
= TXQ_FIX_PRIO_CONF
;
997 case TX_BW_CONTROL_NEW_LAYOUT
:
998 off
= TXQ_FIX_PRIO_CONF_MOVED
;
1003 val
= rdlp(mp
, off
);
1004 val
|= 1 << txq
->index
;
1009 static void txq_set_wrr(struct tx_queue
*txq
, int weight
)
1011 struct mv643xx_eth_private
*mp
= txq_to_mp(txq
);
1016 * Turn off fixed priority mode.
1019 switch (mp
->shared
->tx_bw_control
) {
1020 case TX_BW_CONTROL_OLD_LAYOUT
:
1021 off
= TXQ_FIX_PRIO_CONF
;
1023 case TX_BW_CONTROL_NEW_LAYOUT
:
1024 off
= TXQ_FIX_PRIO_CONF_MOVED
;
1029 val
= rdlp(mp
, off
);
1030 val
&= ~(1 << txq
->index
);
1034 * Configure WRR weight for this queue.
1037 val
= rdlp(mp
, off
);
1038 val
= (val
& ~0xff) | (weight
& 0xff);
1039 wrlp(mp
, TXQ_BW_WRR_CONF(txq
->index
), val
);
1044 /* mii management interface *************************************************/
1045 static irqreturn_t
mv643xx_eth_err_irq(int irq
, void *dev_id
)
1047 struct mv643xx_eth_shared_private
*msp
= dev_id
;
1049 if (readl(msp
->base
+ ERR_INT_CAUSE
) & ERR_INT_SMI_DONE
) {
1050 writel(~ERR_INT_SMI_DONE
, msp
->base
+ ERR_INT_CAUSE
);
1051 wake_up(&msp
->smi_busy_wait
);
1058 static int smi_is_done(struct mv643xx_eth_shared_private
*msp
)
1060 return !(readl(msp
->base
+ SMI_REG
) & SMI_BUSY
);
1063 static int smi_wait_ready(struct mv643xx_eth_shared_private
*msp
)
1065 if (msp
->err_interrupt
== NO_IRQ
) {
1068 for (i
= 0; !smi_is_done(msp
); i
++) {
1077 if (!smi_is_done(msp
)) {
1078 wait_event_timeout(msp
->smi_busy_wait
, smi_is_done(msp
),
1079 msecs_to_jiffies(100));
1080 if (!smi_is_done(msp
))
1087 static int smi_bus_read(struct mii_bus
*bus
, int addr
, int reg
)
1089 struct mv643xx_eth_shared_private
*msp
= bus
->priv
;
1090 void __iomem
*smi_reg
= msp
->base
+ SMI_REG
;
1093 if (smi_wait_ready(msp
)) {
1094 printk(KERN_WARNING
"mv643xx_eth: SMI bus busy timeout\n");
1098 writel(SMI_OPCODE_READ
| (reg
<< 21) | (addr
<< 16), smi_reg
);
1100 if (smi_wait_ready(msp
)) {
1101 printk(KERN_WARNING
"mv643xx_eth: SMI bus busy timeout\n");
1105 ret
= readl(smi_reg
);
1106 if (!(ret
& SMI_READ_VALID
)) {
1107 printk(KERN_WARNING
"mv643xx_eth: SMI bus read not valid\n");
1111 return ret
& 0xffff;
1114 static int smi_bus_write(struct mii_bus
*bus
, int addr
, int reg
, u16 val
)
1116 struct mv643xx_eth_shared_private
*msp
= bus
->priv
;
1117 void __iomem
*smi_reg
= msp
->base
+ SMI_REG
;
1119 if (smi_wait_ready(msp
)) {
1120 printk(KERN_WARNING
"mv643xx_eth: SMI bus busy timeout\n");
1124 writel(SMI_OPCODE_WRITE
| (reg
<< 21) |
1125 (addr
<< 16) | (val
& 0xffff), smi_reg
);
1127 if (smi_wait_ready(msp
)) {
1128 printk(KERN_WARNING
"mv643xx_eth: SMI bus busy timeout\n");
1136 /* statistics ***************************************************************/
1137 static struct net_device_stats
*mv643xx_eth_get_stats(struct net_device
*dev
)
1139 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
1140 struct net_device_stats
*stats
= &dev
->stats
;
1141 unsigned long tx_packets
= 0;
1142 unsigned long tx_bytes
= 0;
1143 unsigned long tx_dropped
= 0;
1146 for (i
= 0; i
< mp
->txq_count
; i
++) {
1147 struct tx_queue
*txq
= mp
->txq
+ i
;
1149 tx_packets
+= txq
->tx_packets
;
1150 tx_bytes
+= txq
->tx_bytes
;
1151 tx_dropped
+= txq
->tx_dropped
;
1154 stats
->tx_packets
= tx_packets
;
1155 stats
->tx_bytes
= tx_bytes
;
1156 stats
->tx_dropped
= tx_dropped
;
1161 static inline u32
mib_read(struct mv643xx_eth_private
*mp
, int offset
)
1163 return rdl(mp
, MIB_COUNTERS(mp
->port_num
) + offset
);
1166 static void mib_counters_clear(struct mv643xx_eth_private
*mp
)
1170 for (i
= 0; i
< 0x80; i
+= 4)
1174 static void mib_counters_update(struct mv643xx_eth_private
*mp
)
1176 struct mib_counters
*p
= &mp
->mib_counters
;
1178 spin_lock(&mp
->mib_counters_lock
);
1179 p
->good_octets_received
+= mib_read(mp
, 0x00);
1180 p
->good_octets_received
+= (u64
)mib_read(mp
, 0x04) << 32;
1181 p
->bad_octets_received
+= mib_read(mp
, 0x08);
1182 p
->internal_mac_transmit_err
+= mib_read(mp
, 0x0c);
1183 p
->good_frames_received
+= mib_read(mp
, 0x10);
1184 p
->bad_frames_received
+= mib_read(mp
, 0x14);
1185 p
->broadcast_frames_received
+= mib_read(mp
, 0x18);
1186 p
->multicast_frames_received
+= mib_read(mp
, 0x1c);
1187 p
->frames_64_octets
+= mib_read(mp
, 0x20);
1188 p
->frames_65_to_127_octets
+= mib_read(mp
, 0x24);
1189 p
->frames_128_to_255_octets
+= mib_read(mp
, 0x28);
1190 p
->frames_256_to_511_octets
+= mib_read(mp
, 0x2c);
1191 p
->frames_512_to_1023_octets
+= mib_read(mp
, 0x30);
1192 p
->frames_1024_to_max_octets
+= mib_read(mp
, 0x34);
1193 p
->good_octets_sent
+= mib_read(mp
, 0x38);
1194 p
->good_octets_sent
+= (u64
)mib_read(mp
, 0x3c) << 32;
1195 p
->good_frames_sent
+= mib_read(mp
, 0x40);
1196 p
->excessive_collision
+= mib_read(mp
, 0x44);
1197 p
->multicast_frames_sent
+= mib_read(mp
, 0x48);
1198 p
->broadcast_frames_sent
+= mib_read(mp
, 0x4c);
1199 p
->unrec_mac_control_received
+= mib_read(mp
, 0x50);
1200 p
->fc_sent
+= mib_read(mp
, 0x54);
1201 p
->good_fc_received
+= mib_read(mp
, 0x58);
1202 p
->bad_fc_received
+= mib_read(mp
, 0x5c);
1203 p
->undersize_received
+= mib_read(mp
, 0x60);
1204 p
->fragments_received
+= mib_read(mp
, 0x64);
1205 p
->oversize_received
+= mib_read(mp
, 0x68);
1206 p
->jabber_received
+= mib_read(mp
, 0x6c);
1207 p
->mac_receive_error
+= mib_read(mp
, 0x70);
1208 p
->bad_crc_event
+= mib_read(mp
, 0x74);
1209 p
->collision
+= mib_read(mp
, 0x78);
1210 p
->late_collision
+= mib_read(mp
, 0x7c);
1211 spin_unlock(&mp
->mib_counters_lock
);
1213 mod_timer(&mp
->mib_counters_timer
, jiffies
+ 30 * HZ
);
1216 static void mib_counters_timer_wrapper(unsigned long _mp
)
1218 struct mv643xx_eth_private
*mp
= (void *)_mp
;
1220 mib_counters_update(mp
);
1224 /* ethtool ******************************************************************/
1225 struct mv643xx_eth_stats
{
1226 char stat_string
[ETH_GSTRING_LEN
];
1233 { #m, FIELD_SIZEOF(struct net_device_stats, m), \
1234 offsetof(struct net_device, stats.m), -1 }
1236 #define MIBSTAT(m) \
1237 { #m, FIELD_SIZEOF(struct mib_counters, m), \
1238 -1, offsetof(struct mv643xx_eth_private, mib_counters.m) }
1240 static const struct mv643xx_eth_stats mv643xx_eth_stats
[] = {
1249 MIBSTAT(good_octets_received
),
1250 MIBSTAT(bad_octets_received
),
1251 MIBSTAT(internal_mac_transmit_err
),
1252 MIBSTAT(good_frames_received
),
1253 MIBSTAT(bad_frames_received
),
1254 MIBSTAT(broadcast_frames_received
),
1255 MIBSTAT(multicast_frames_received
),
1256 MIBSTAT(frames_64_octets
),
1257 MIBSTAT(frames_65_to_127_octets
),
1258 MIBSTAT(frames_128_to_255_octets
),
1259 MIBSTAT(frames_256_to_511_octets
),
1260 MIBSTAT(frames_512_to_1023_octets
),
1261 MIBSTAT(frames_1024_to_max_octets
),
1262 MIBSTAT(good_octets_sent
),
1263 MIBSTAT(good_frames_sent
),
1264 MIBSTAT(excessive_collision
),
1265 MIBSTAT(multicast_frames_sent
),
1266 MIBSTAT(broadcast_frames_sent
),
1267 MIBSTAT(unrec_mac_control_received
),
1269 MIBSTAT(good_fc_received
),
1270 MIBSTAT(bad_fc_received
),
1271 MIBSTAT(undersize_received
),
1272 MIBSTAT(fragments_received
),
1273 MIBSTAT(oversize_received
),
1274 MIBSTAT(jabber_received
),
1275 MIBSTAT(mac_receive_error
),
1276 MIBSTAT(bad_crc_event
),
1278 MIBSTAT(late_collision
),
1282 mv643xx_eth_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
1284 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
1287 err
= phy_read_status(mp
->phy
);
1289 err
= phy_ethtool_gset(mp
->phy
, cmd
);
1292 * The MAC does not support 1000baseT_Half.
1294 cmd
->supported
&= ~SUPPORTED_1000baseT_Half
;
1295 cmd
->advertising
&= ~ADVERTISED_1000baseT_Half
;
1301 mv643xx_eth_get_settings_phyless(struct net_device
*dev
,
1302 struct ethtool_cmd
*cmd
)
1304 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
1307 port_status
= rdlp(mp
, PORT_STATUS
);
1309 cmd
->supported
= SUPPORTED_MII
;
1310 cmd
->advertising
= ADVERTISED_MII
;
1311 switch (port_status
& PORT_SPEED_MASK
) {
1313 cmd
->speed
= SPEED_10
;
1315 case PORT_SPEED_100
:
1316 cmd
->speed
= SPEED_100
;
1318 case PORT_SPEED_1000
:
1319 cmd
->speed
= SPEED_1000
;
1325 cmd
->duplex
= (port_status
& FULL_DUPLEX
) ? DUPLEX_FULL
: DUPLEX_HALF
;
1326 cmd
->port
= PORT_MII
;
1327 cmd
->phy_address
= 0;
1328 cmd
->transceiver
= XCVR_INTERNAL
;
1329 cmd
->autoneg
= AUTONEG_DISABLE
;
1337 mv643xx_eth_set_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
1339 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
1342 * The MAC does not support 1000baseT_Half.
1344 cmd
->advertising
&= ~ADVERTISED_1000baseT_Half
;
1346 return phy_ethtool_sset(mp
->phy
, cmd
);
1350 mv643xx_eth_set_settings_phyless(struct net_device
*dev
,
1351 struct ethtool_cmd
*cmd
)
1356 static void mv643xx_eth_get_drvinfo(struct net_device
*dev
,
1357 struct ethtool_drvinfo
*drvinfo
)
1359 strncpy(drvinfo
->driver
, mv643xx_eth_driver_name
, 32);
1360 strncpy(drvinfo
->version
, mv643xx_eth_driver_version
, 32);
1361 strncpy(drvinfo
->fw_version
, "N/A", 32);
1362 strncpy(drvinfo
->bus_info
, "platform", 32);
1363 drvinfo
->n_stats
= ARRAY_SIZE(mv643xx_eth_stats
);
1366 static int mv643xx_eth_nway_reset(struct net_device
*dev
)
1368 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
1370 return genphy_restart_aneg(mp
->phy
);
1373 static int mv643xx_eth_nway_reset_phyless(struct net_device
*dev
)
1378 static u32
mv643xx_eth_get_link(struct net_device
*dev
)
1380 return !!netif_carrier_ok(dev
);
1383 static void mv643xx_eth_get_strings(struct net_device
*dev
,
1384 uint32_t stringset
, uint8_t *data
)
1388 if (stringset
== ETH_SS_STATS
) {
1389 for (i
= 0; i
< ARRAY_SIZE(mv643xx_eth_stats
); i
++) {
1390 memcpy(data
+ i
* ETH_GSTRING_LEN
,
1391 mv643xx_eth_stats
[i
].stat_string
,
1397 static void mv643xx_eth_get_ethtool_stats(struct net_device
*dev
,
1398 struct ethtool_stats
*stats
,
1401 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
1404 mv643xx_eth_get_stats(dev
);
1405 mib_counters_update(mp
);
1407 for (i
= 0; i
< ARRAY_SIZE(mv643xx_eth_stats
); i
++) {
1408 const struct mv643xx_eth_stats
*stat
;
1411 stat
= mv643xx_eth_stats
+ i
;
1413 if (stat
->netdev_off
>= 0)
1414 p
= ((void *)mp
->dev
) + stat
->netdev_off
;
1416 p
= ((void *)mp
) + stat
->mp_off
;
1418 data
[i
] = (stat
->sizeof_stat
== 8) ?
1419 *(uint64_t *)p
: *(uint32_t *)p
;
1423 static int mv643xx_eth_get_sset_count(struct net_device
*dev
, int sset
)
1425 if (sset
== ETH_SS_STATS
)
1426 return ARRAY_SIZE(mv643xx_eth_stats
);
1431 static const struct ethtool_ops mv643xx_eth_ethtool_ops
= {
1432 .get_settings
= mv643xx_eth_get_settings
,
1433 .set_settings
= mv643xx_eth_set_settings
,
1434 .get_drvinfo
= mv643xx_eth_get_drvinfo
,
1435 .nway_reset
= mv643xx_eth_nway_reset
,
1436 .get_link
= mv643xx_eth_get_link
,
1437 .set_sg
= ethtool_op_set_sg
,
1438 .get_strings
= mv643xx_eth_get_strings
,
1439 .get_ethtool_stats
= mv643xx_eth_get_ethtool_stats
,
1440 .get_sset_count
= mv643xx_eth_get_sset_count
,
1443 static const struct ethtool_ops mv643xx_eth_ethtool_ops_phyless
= {
1444 .get_settings
= mv643xx_eth_get_settings_phyless
,
1445 .set_settings
= mv643xx_eth_set_settings_phyless
,
1446 .get_drvinfo
= mv643xx_eth_get_drvinfo
,
1447 .nway_reset
= mv643xx_eth_nway_reset_phyless
,
1448 .get_link
= mv643xx_eth_get_link
,
1449 .set_sg
= ethtool_op_set_sg
,
1450 .get_strings
= mv643xx_eth_get_strings
,
1451 .get_ethtool_stats
= mv643xx_eth_get_ethtool_stats
,
1452 .get_sset_count
= mv643xx_eth_get_sset_count
,
1456 /* address handling *********************************************************/
1457 static void uc_addr_get(struct mv643xx_eth_private
*mp
, unsigned char *addr
)
1459 unsigned int mac_h
= rdlp(mp
, MAC_ADDR_HIGH
);
1460 unsigned int mac_l
= rdlp(mp
, MAC_ADDR_LOW
);
1462 addr
[0] = (mac_h
>> 24) & 0xff;
1463 addr
[1] = (mac_h
>> 16) & 0xff;
1464 addr
[2] = (mac_h
>> 8) & 0xff;
1465 addr
[3] = mac_h
& 0xff;
1466 addr
[4] = (mac_l
>> 8) & 0xff;
1467 addr
[5] = mac_l
& 0xff;
1470 static void uc_addr_set(struct mv643xx_eth_private
*mp
, unsigned char *addr
)
1472 wrlp(mp
, MAC_ADDR_HIGH
,
1473 (addr
[0] << 24) | (addr
[1] << 16) | (addr
[2] << 8) | addr
[3]);
1474 wrlp(mp
, MAC_ADDR_LOW
, (addr
[4] << 8) | addr
[5]);
1477 static u32
uc_addr_filter_mask(struct net_device
*dev
)
1479 struct dev_addr_list
*uc_ptr
;
1482 if (dev
->flags
& IFF_PROMISC
)
1485 nibbles
= 1 << (dev
->dev_addr
[5] & 0x0f);
1486 for (uc_ptr
= dev
->uc_list
; uc_ptr
!= NULL
; uc_ptr
= uc_ptr
->next
) {
1487 if (memcmp(dev
->dev_addr
, uc_ptr
->da_addr
, 5))
1489 if ((dev
->dev_addr
[5] ^ uc_ptr
->da_addr
[5]) & 0xf0)
1492 nibbles
|= 1 << (uc_ptr
->da_addr
[5] & 0x0f);
1498 static void mv643xx_eth_program_unicast_filter(struct net_device
*dev
)
1500 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
1505 uc_addr_set(mp
, dev
->dev_addr
);
1507 port_config
= rdlp(mp
, PORT_CONFIG
);
1508 nibbles
= uc_addr_filter_mask(dev
);
1510 port_config
|= UNICAST_PROMISCUOUS_MODE
;
1511 wrlp(mp
, PORT_CONFIG
, port_config
);
1515 for (i
= 0; i
< 16; i
+= 4) {
1516 int off
= UNICAST_TABLE(mp
->port_num
) + i
;
1533 port_config
&= ~UNICAST_PROMISCUOUS_MODE
;
1534 wrlp(mp
, PORT_CONFIG
, port_config
);
1537 static int addr_crc(unsigned char *addr
)
1542 for (i
= 0; i
< 6; i
++) {
1545 crc
= (crc
^ addr
[i
]) << 8;
1546 for (j
= 7; j
>= 0; j
--) {
1547 if (crc
& (0x100 << j
))
1555 static void mv643xx_eth_program_multicast_filter(struct net_device
*dev
)
1557 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
1560 struct dev_addr_list
*addr
;
1563 if (dev
->flags
& (IFF_PROMISC
| IFF_ALLMULTI
)) {
1569 port_num
= mp
->port_num
;
1570 accept
= 0x01010101;
1571 for (i
= 0; i
< 0x100; i
+= 4) {
1572 wrl(mp
, SPECIAL_MCAST_TABLE(port_num
) + i
, accept
);
1573 wrl(mp
, OTHER_MCAST_TABLE(port_num
) + i
, accept
);
1578 mc_spec
= kmalloc(0x200, GFP_KERNEL
);
1579 if (mc_spec
== NULL
)
1581 mc_other
= mc_spec
+ (0x100 >> 2);
1583 memset(mc_spec
, 0, 0x100);
1584 memset(mc_other
, 0, 0x100);
1586 for (addr
= dev
->mc_list
; addr
!= NULL
; addr
= addr
->next
) {
1587 u8
*a
= addr
->da_addr
;
1591 if (memcmp(a
, "\x01\x00\x5e\x00\x00", 5) == 0) {
1596 entry
= addr_crc(a
);
1599 table
[entry
>> 2] |= 1 << (8 * (entry
& 3));
1602 for (i
= 0; i
< 0x100; i
+= 4) {
1603 wrl(mp
, SPECIAL_MCAST_TABLE(mp
->port_num
) + i
, mc_spec
[i
>> 2]);
1604 wrl(mp
, OTHER_MCAST_TABLE(mp
->port_num
) + i
, mc_other
[i
>> 2]);
1610 static void mv643xx_eth_set_rx_mode(struct net_device
*dev
)
1612 mv643xx_eth_program_unicast_filter(dev
);
1613 mv643xx_eth_program_multicast_filter(dev
);
1616 static int mv643xx_eth_set_mac_address(struct net_device
*dev
, void *addr
)
1618 struct sockaddr
*sa
= addr
;
1620 memcpy(dev
->dev_addr
, sa
->sa_data
, ETH_ALEN
);
1622 netif_addr_lock_bh(dev
);
1623 mv643xx_eth_program_unicast_filter(dev
);
1624 netif_addr_unlock_bh(dev
);
1630 /* rx/tx queue initialisation ***********************************************/
1631 static int rxq_init(struct mv643xx_eth_private
*mp
, int index
)
1633 struct rx_queue
*rxq
= mp
->rxq
+ index
;
1634 struct rx_desc
*rx_desc
;
1640 rxq
->rx_ring_size
= mp
->default_rx_ring_size
;
1642 rxq
->rx_desc_count
= 0;
1643 rxq
->rx_curr_desc
= 0;
1644 rxq
->rx_used_desc
= 0;
1646 size
= rxq
->rx_ring_size
* sizeof(struct rx_desc
);
1648 if (index
== 0 && size
<= mp
->rx_desc_sram_size
) {
1649 rxq
->rx_desc_area
= ioremap(mp
->rx_desc_sram_addr
,
1650 mp
->rx_desc_sram_size
);
1651 rxq
->rx_desc_dma
= mp
->rx_desc_sram_addr
;
1653 rxq
->rx_desc_area
= dma_alloc_coherent(NULL
, size
,
1658 if (rxq
->rx_desc_area
== NULL
) {
1659 dev_printk(KERN_ERR
, &mp
->dev
->dev
,
1660 "can't allocate rx ring (%d bytes)\n", size
);
1663 memset(rxq
->rx_desc_area
, 0, size
);
1665 rxq
->rx_desc_area_size
= size
;
1666 rxq
->rx_skb
= kmalloc(rxq
->rx_ring_size
* sizeof(*rxq
->rx_skb
),
1668 if (rxq
->rx_skb
== NULL
) {
1669 dev_printk(KERN_ERR
, &mp
->dev
->dev
,
1670 "can't allocate rx skb ring\n");
1674 rx_desc
= (struct rx_desc
*)rxq
->rx_desc_area
;
1675 for (i
= 0; i
< rxq
->rx_ring_size
; i
++) {
1679 if (nexti
== rxq
->rx_ring_size
)
1682 rx_desc
[i
].next_desc_ptr
= rxq
->rx_desc_dma
+
1683 nexti
* sizeof(struct rx_desc
);
1690 if (index
== 0 && size
<= mp
->rx_desc_sram_size
)
1691 iounmap(rxq
->rx_desc_area
);
1693 dma_free_coherent(NULL
, size
,
1701 static void rxq_deinit(struct rx_queue
*rxq
)
1703 struct mv643xx_eth_private
*mp
= rxq_to_mp(rxq
);
1708 for (i
= 0; i
< rxq
->rx_ring_size
; i
++) {
1709 if (rxq
->rx_skb
[i
]) {
1710 dev_kfree_skb(rxq
->rx_skb
[i
]);
1711 rxq
->rx_desc_count
--;
1715 if (rxq
->rx_desc_count
) {
1716 dev_printk(KERN_ERR
, &mp
->dev
->dev
,
1717 "error freeing rx ring -- %d skbs stuck\n",
1718 rxq
->rx_desc_count
);
1721 if (rxq
->index
== 0 &&
1722 rxq
->rx_desc_area_size
<= mp
->rx_desc_sram_size
)
1723 iounmap(rxq
->rx_desc_area
);
1725 dma_free_coherent(NULL
, rxq
->rx_desc_area_size
,
1726 rxq
->rx_desc_area
, rxq
->rx_desc_dma
);
1731 static int txq_init(struct mv643xx_eth_private
*mp
, int index
)
1733 struct tx_queue
*txq
= mp
->txq
+ index
;
1734 struct tx_desc
*tx_desc
;
1740 txq
->tx_ring_size
= mp
->default_tx_ring_size
;
1742 txq
->tx_desc_count
= 0;
1743 txq
->tx_curr_desc
= 0;
1744 txq
->tx_used_desc
= 0;
1746 size
= txq
->tx_ring_size
* sizeof(struct tx_desc
);
1748 if (index
== 0 && size
<= mp
->tx_desc_sram_size
) {
1749 txq
->tx_desc_area
= ioremap(mp
->tx_desc_sram_addr
,
1750 mp
->tx_desc_sram_size
);
1751 txq
->tx_desc_dma
= mp
->tx_desc_sram_addr
;
1753 txq
->tx_desc_area
= dma_alloc_coherent(NULL
, size
,
1758 if (txq
->tx_desc_area
== NULL
) {
1759 dev_printk(KERN_ERR
, &mp
->dev
->dev
,
1760 "can't allocate tx ring (%d bytes)\n", size
);
1763 memset(txq
->tx_desc_area
, 0, size
);
1765 txq
->tx_desc_area_size
= size
;
1767 tx_desc
= (struct tx_desc
*)txq
->tx_desc_area
;
1768 for (i
= 0; i
< txq
->tx_ring_size
; i
++) {
1769 struct tx_desc
*txd
= tx_desc
+ i
;
1773 if (nexti
== txq
->tx_ring_size
)
1777 txd
->next_desc_ptr
= txq
->tx_desc_dma
+
1778 nexti
* sizeof(struct tx_desc
);
1781 skb_queue_head_init(&txq
->tx_skb
);
1786 static void txq_deinit(struct tx_queue
*txq
)
1788 struct mv643xx_eth_private
*mp
= txq_to_mp(txq
);
1791 txq_reclaim(txq
, txq
->tx_ring_size
, 1);
1793 BUG_ON(txq
->tx_used_desc
!= txq
->tx_curr_desc
);
1795 if (txq
->index
== 0 &&
1796 txq
->tx_desc_area_size
<= mp
->tx_desc_sram_size
)
1797 iounmap(txq
->tx_desc_area
);
1799 dma_free_coherent(NULL
, txq
->tx_desc_area_size
,
1800 txq
->tx_desc_area
, txq
->tx_desc_dma
);
1804 /* netdev ops and related ***************************************************/
1805 static int mv643xx_eth_collect_events(struct mv643xx_eth_private
*mp
)
1810 int_cause
= rdlp(mp
, INT_CAUSE
) & (INT_TX_END
| INT_RX
| INT_EXT
);
1815 if (int_cause
& INT_EXT
)
1816 int_cause_ext
= rdlp(mp
, INT_CAUSE_EXT
);
1818 int_cause
&= INT_TX_END
| INT_RX
;
1820 wrlp(mp
, INT_CAUSE
, ~int_cause
);
1821 mp
->work_tx_end
|= ((int_cause
& INT_TX_END
) >> 19) &
1822 ~(rdlp(mp
, TXQ_COMMAND
) & 0xff);
1823 mp
->work_rx
|= (int_cause
& INT_RX
) >> 2;
1826 int_cause_ext
&= INT_EXT_LINK_PHY
| INT_EXT_TX
;
1827 if (int_cause_ext
) {
1828 wrlp(mp
, INT_CAUSE_EXT
, ~int_cause_ext
);
1829 if (int_cause_ext
& INT_EXT_LINK_PHY
)
1831 mp
->work_tx
|= int_cause_ext
& INT_EXT_TX
;
1837 static irqreturn_t
mv643xx_eth_irq(int irq
, void *dev_id
)
1839 struct net_device
*dev
= (struct net_device
*)dev_id
;
1840 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
1842 if (unlikely(!mv643xx_eth_collect_events(mp
)))
1845 wrlp(mp
, INT_MASK
, 0);
1846 napi_schedule(&mp
->napi
);
1851 static void handle_link_event(struct mv643xx_eth_private
*mp
)
1853 struct net_device
*dev
= mp
->dev
;
1859 port_status
= rdlp(mp
, PORT_STATUS
);
1860 if (!(port_status
& LINK_UP
)) {
1861 if (netif_carrier_ok(dev
)) {
1864 printk(KERN_INFO
"%s: link down\n", dev
->name
);
1866 netif_carrier_off(dev
);
1868 for (i
= 0; i
< mp
->txq_count
; i
++) {
1869 struct tx_queue
*txq
= mp
->txq
+ i
;
1871 txq_reclaim(txq
, txq
->tx_ring_size
, 1);
1872 txq_reset_hw_ptr(txq
);
1878 switch (port_status
& PORT_SPEED_MASK
) {
1882 case PORT_SPEED_100
:
1885 case PORT_SPEED_1000
:
1892 duplex
= (port_status
& FULL_DUPLEX
) ? 1 : 0;
1893 fc
= (port_status
& FLOW_CONTROL_ENABLED
) ? 1 : 0;
1895 printk(KERN_INFO
"%s: link up, %d Mb/s, %s duplex, "
1896 "flow control %sabled\n", dev
->name
,
1897 speed
, duplex
? "full" : "half",
1900 if (!netif_carrier_ok(dev
))
1901 netif_carrier_on(dev
);
1904 static int mv643xx_eth_poll(struct napi_struct
*napi
, int budget
)
1906 struct mv643xx_eth_private
*mp
;
1909 mp
= container_of(napi
, struct mv643xx_eth_private
, napi
);
1911 mp
->work_rx_refill
|= mp
->work_rx_oom
;
1912 mp
->work_rx_oom
= 0;
1915 while (work_done
< budget
) {
1920 if (mp
->work_link
) {
1922 handle_link_event(mp
);
1926 queue_mask
= mp
->work_tx
| mp
->work_tx_end
|
1927 mp
->work_rx
| mp
->work_rx_refill
;
1929 if (mv643xx_eth_collect_events(mp
))
1934 queue
= fls(queue_mask
) - 1;
1935 queue_mask
= 1 << queue
;
1937 work_tbd
= budget
- work_done
;
1941 if (mp
->work_tx_end
& queue_mask
) {
1942 txq_kick(mp
->txq
+ queue
);
1943 } else if (mp
->work_tx
& queue_mask
) {
1944 work_done
+= txq_reclaim(mp
->txq
+ queue
, work_tbd
, 0);
1945 txq_maybe_wake(mp
->txq
+ queue
);
1946 } else if (mp
->work_rx
& queue_mask
) {
1947 work_done
+= rxq_process(mp
->rxq
+ queue
, work_tbd
);
1948 } else if (mp
->work_rx_refill
& queue_mask
) {
1949 work_done
+= rxq_refill(mp
->rxq
+ queue
, work_tbd
);
1955 if (work_done
< budget
) {
1956 if (mp
->work_rx_oom
)
1957 mod_timer(&mp
->rx_oom
, jiffies
+ (HZ
/ 10));
1958 napi_complete(napi
);
1959 wrlp(mp
, INT_MASK
, INT_TX_END
| INT_RX
| INT_EXT
);
1965 static inline void oom_timer_wrapper(unsigned long data
)
1967 struct mv643xx_eth_private
*mp
= (void *)data
;
1969 napi_schedule(&mp
->napi
);
1972 static void phy_reset(struct mv643xx_eth_private
*mp
)
1976 data
= phy_read(mp
->phy
, MII_BMCR
);
1981 if (phy_write(mp
->phy
, MII_BMCR
, data
) < 0)
1985 data
= phy_read(mp
->phy
, MII_BMCR
);
1986 } while (data
>= 0 && data
& BMCR_RESET
);
1989 static void port_start(struct mv643xx_eth_private
*mp
)
1995 * Perform PHY reset, if there is a PHY.
1997 if (mp
->phy
!= NULL
) {
1998 struct ethtool_cmd cmd
;
2000 mv643xx_eth_get_settings(mp
->dev
, &cmd
);
2002 mv643xx_eth_set_settings(mp
->dev
, &cmd
);
2006 * Configure basic link parameters.
2008 pscr
= rdlp(mp
, PORT_SERIAL_CONTROL
);
2010 pscr
|= SERIAL_PORT_ENABLE
;
2011 wrlp(mp
, PORT_SERIAL_CONTROL
, pscr
);
2013 pscr
|= DO_NOT_FORCE_LINK_FAIL
;
2014 if (mp
->phy
== NULL
)
2015 pscr
|= FORCE_LINK_PASS
;
2016 wrlp(mp
, PORT_SERIAL_CONTROL
, pscr
);
2018 wrlp(mp
, SDMA_CONFIG
, PORT_SDMA_CONFIG_DEFAULT_VALUE
);
2021 * Configure TX path and queues.
2023 tx_set_rate(mp
, 1000000000, 16777216);
2024 for (i
= 0; i
< mp
->txq_count
; i
++) {
2025 struct tx_queue
*txq
= mp
->txq
+ i
;
2027 txq_reset_hw_ptr(txq
);
2028 txq_set_rate(txq
, 1000000000, 16777216);
2029 txq_set_fixed_prio_mode(txq
);
2033 * Add configured unicast address to address filter table.
2035 mv643xx_eth_program_unicast_filter(mp
->dev
);
2038 * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast
2039 * frames to RX queue #0, and include the pseudo-header when
2040 * calculating receive checksums.
2042 wrlp(mp
, PORT_CONFIG
, 0x02000000);
2045 * Treat BPDUs as normal multicasts, and disable partition mode.
2047 wrlp(mp
, PORT_CONFIG_EXT
, 0x00000000);
2050 * Enable the receive queues.
2052 for (i
= 0; i
< mp
->rxq_count
; i
++) {
2053 struct rx_queue
*rxq
= mp
->rxq
+ i
;
2056 addr
= (u32
)rxq
->rx_desc_dma
;
2057 addr
+= rxq
->rx_curr_desc
* sizeof(struct rx_desc
);
2058 wrlp(mp
, RXQ_CURRENT_DESC_PTR(i
), addr
);
2064 static void set_rx_coal(struct mv643xx_eth_private
*mp
, unsigned int delay
)
2066 unsigned int coal
= ((mp
->shared
->t_clk
/ 1000000) * delay
) / 64;
2069 val
= rdlp(mp
, SDMA_CONFIG
);
2070 if (mp
->shared
->extended_rx_coal_limit
) {
2074 val
|= (coal
& 0x8000) << 10;
2075 val
|= (coal
& 0x7fff) << 7;
2080 val
|= (coal
& 0x3fff) << 8;
2082 wrlp(mp
, SDMA_CONFIG
, val
);
2085 static void set_tx_coal(struct mv643xx_eth_private
*mp
, unsigned int delay
)
2087 unsigned int coal
= ((mp
->shared
->t_clk
/ 1000000) * delay
) / 64;
2091 wrlp(mp
, TX_FIFO_URGENT_THRESHOLD
, (coal
& 0x3fff) << 4);
2094 static void mv643xx_eth_recalc_skb_size(struct mv643xx_eth_private
*mp
)
2099 * Reserve 2+14 bytes for an ethernet header (the hardware
2100 * automatically prepends 2 bytes of dummy data to each
2101 * received packet), 16 bytes for up to four VLAN tags, and
2102 * 4 bytes for the trailing FCS -- 36 bytes total.
2104 skb_size
= mp
->dev
->mtu
+ 36;
2107 * Make sure that the skb size is a multiple of 8 bytes, as
2108 * the lower three bits of the receive descriptor's buffer
2109 * size field are ignored by the hardware.
2111 mp
->skb_size
= (skb_size
+ 7) & ~7;
2114 static int mv643xx_eth_open(struct net_device
*dev
)
2116 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
2120 wrlp(mp
, INT_CAUSE
, 0);
2121 wrlp(mp
, INT_CAUSE_EXT
, 0);
2122 rdlp(mp
, INT_CAUSE_EXT
);
2124 err
= request_irq(dev
->irq
, mv643xx_eth_irq
,
2125 IRQF_SHARED
, dev
->name
, dev
);
2127 dev_printk(KERN_ERR
, &dev
->dev
, "can't assign irq\n");
2131 mv643xx_eth_recalc_skb_size(mp
);
2133 napi_enable(&mp
->napi
);
2135 skb_queue_head_init(&mp
->rx_recycle
);
2137 for (i
= 0; i
< mp
->rxq_count
; i
++) {
2138 err
= rxq_init(mp
, i
);
2141 rxq_deinit(mp
->rxq
+ i
);
2145 rxq_refill(mp
->rxq
+ i
, INT_MAX
);
2148 if (mp
->work_rx_oom
) {
2149 mp
->rx_oom
.expires
= jiffies
+ (HZ
/ 10);
2150 add_timer(&mp
->rx_oom
);
2153 for (i
= 0; i
< mp
->txq_count
; i
++) {
2154 err
= txq_init(mp
, i
);
2157 txq_deinit(mp
->txq
+ i
);
2162 netif_carrier_off(dev
);
2169 wrlp(mp
, INT_MASK_EXT
, INT_EXT_LINK_PHY
| INT_EXT_TX
);
2170 wrlp(mp
, INT_MASK
, INT_TX_END
| INT_RX
| INT_EXT
);
2176 for (i
= 0; i
< mp
->rxq_count
; i
++)
2177 rxq_deinit(mp
->rxq
+ i
);
2179 free_irq(dev
->irq
, dev
);
2184 static void port_reset(struct mv643xx_eth_private
*mp
)
2189 for (i
= 0; i
< mp
->rxq_count
; i
++)
2190 rxq_disable(mp
->rxq
+ i
);
2191 for (i
= 0; i
< mp
->txq_count
; i
++)
2192 txq_disable(mp
->txq
+ i
);
2195 u32 ps
= rdlp(mp
, PORT_STATUS
);
2197 if ((ps
& (TX_IN_PROGRESS
| TX_FIFO_EMPTY
)) == TX_FIFO_EMPTY
)
2202 /* Reset the Enable bit in the Configuration Register */
2203 data
= rdlp(mp
, PORT_SERIAL_CONTROL
);
2204 data
&= ~(SERIAL_PORT_ENABLE
|
2205 DO_NOT_FORCE_LINK_FAIL
|
2207 wrlp(mp
, PORT_SERIAL_CONTROL
, data
);
2210 static int mv643xx_eth_stop(struct net_device
*dev
)
2212 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
2215 wrlp(mp
, INT_MASK_EXT
, 0x00000000);
2216 wrlp(mp
, INT_MASK
, 0x00000000);
2219 del_timer_sync(&mp
->mib_counters_timer
);
2221 napi_disable(&mp
->napi
);
2223 del_timer_sync(&mp
->rx_oom
);
2225 netif_carrier_off(dev
);
2227 free_irq(dev
->irq
, dev
);
2230 mv643xx_eth_get_stats(dev
);
2231 mib_counters_update(mp
);
2233 skb_queue_purge(&mp
->rx_recycle
);
2235 for (i
= 0; i
< mp
->rxq_count
; i
++)
2236 rxq_deinit(mp
->rxq
+ i
);
2237 for (i
= 0; i
< mp
->txq_count
; i
++)
2238 txq_deinit(mp
->txq
+ i
);
2243 static int mv643xx_eth_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
2245 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
2247 if (mp
->phy
!= NULL
)
2248 return phy_mii_ioctl(mp
->phy
, if_mii(ifr
), cmd
);
2253 static int mv643xx_eth_change_mtu(struct net_device
*dev
, int new_mtu
)
2255 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
2257 if (new_mtu
< 64 || new_mtu
> 9500)
2261 mv643xx_eth_recalc_skb_size(mp
);
2262 tx_set_rate(mp
, 1000000000, 16777216);
2264 if (!netif_running(dev
))
2268 * Stop and then re-open the interface. This will allocate RX
2269 * skbs of the new MTU.
2270 * There is a possible danger that the open will not succeed,
2271 * due to memory being full.
2273 mv643xx_eth_stop(dev
);
2274 if (mv643xx_eth_open(dev
)) {
2275 dev_printk(KERN_ERR
, &dev
->dev
,
2276 "fatal error on re-opening device after "
2283 static void tx_timeout_task(struct work_struct
*ugly
)
2285 struct mv643xx_eth_private
*mp
;
2287 mp
= container_of(ugly
, struct mv643xx_eth_private
, tx_timeout_task
);
2288 if (netif_running(mp
->dev
)) {
2289 netif_tx_stop_all_queues(mp
->dev
);
2292 netif_tx_wake_all_queues(mp
->dev
);
2296 static void mv643xx_eth_tx_timeout(struct net_device
*dev
)
2298 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
2300 dev_printk(KERN_INFO
, &dev
->dev
, "tx timeout\n");
2302 schedule_work(&mp
->tx_timeout_task
);
2305 #ifdef CONFIG_NET_POLL_CONTROLLER
2306 static void mv643xx_eth_netpoll(struct net_device
*dev
)
2308 struct mv643xx_eth_private
*mp
= netdev_priv(dev
);
2310 wrlp(mp
, INT_MASK
, 0x00000000);
2313 mv643xx_eth_irq(dev
->irq
, dev
);
2315 wrlp(mp
, INT_MASK
, INT_TX_END
| INT_RX
| INT_EXT
);
2320 /* platform glue ************************************************************/
2322 mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private
*msp
,
2323 struct mbus_dram_target_info
*dram
)
2325 void __iomem
*base
= msp
->base
;
2330 for (i
= 0; i
< 6; i
++) {
2331 writel(0, base
+ WINDOW_BASE(i
));
2332 writel(0, base
+ WINDOW_SIZE(i
));
2334 writel(0, base
+ WINDOW_REMAP_HIGH(i
));
2340 for (i
= 0; i
< dram
->num_cs
; i
++) {
2341 struct mbus_dram_window
*cs
= dram
->cs
+ i
;
2343 writel((cs
->base
& 0xffff0000) |
2344 (cs
->mbus_attr
<< 8) |
2345 dram
->mbus_dram_target_id
, base
+ WINDOW_BASE(i
));
2346 writel((cs
->size
- 1) & 0xffff0000, base
+ WINDOW_SIZE(i
));
2348 win_enable
&= ~(1 << i
);
2349 win_protect
|= 3 << (2 * i
);
2352 writel(win_enable
, base
+ WINDOW_BAR_ENABLE
);
2353 msp
->win_protect
= win_protect
;
2356 static void infer_hw_params(struct mv643xx_eth_shared_private
*msp
)
2359 * Check whether we have a 14-bit coal limit field in bits
2360 * [21:8], or a 16-bit coal limit in bits [25,21:7] of the
2361 * SDMA config register.
2363 writel(0x02000000, msp
->base
+ 0x0400 + SDMA_CONFIG
);
2364 if (readl(msp
->base
+ 0x0400 + SDMA_CONFIG
) & 0x02000000)
2365 msp
->extended_rx_coal_limit
= 1;
2367 msp
->extended_rx_coal_limit
= 0;
2370 * Check whether the MAC supports TX rate control, and if
2371 * yes, whether its associated registers are in the old or
2374 writel(1, msp
->base
+ 0x0400 + TX_BW_MTU_MOVED
);
2375 if (readl(msp
->base
+ 0x0400 + TX_BW_MTU_MOVED
) & 1) {
2376 msp
->tx_bw_control
= TX_BW_CONTROL_NEW_LAYOUT
;
2378 writel(7, msp
->base
+ 0x0400 + TX_BW_RATE
);
2379 if (readl(msp
->base
+ 0x0400 + TX_BW_RATE
) & 7)
2380 msp
->tx_bw_control
= TX_BW_CONTROL_OLD_LAYOUT
;
2382 msp
->tx_bw_control
= TX_BW_CONTROL_ABSENT
;
2386 static int mv643xx_eth_shared_probe(struct platform_device
*pdev
)
2388 static int mv643xx_eth_version_printed
;
2389 struct mv643xx_eth_shared_platform_data
*pd
= pdev
->dev
.platform_data
;
2390 struct mv643xx_eth_shared_private
*msp
;
2391 struct resource
*res
;
2394 if (!mv643xx_eth_version_printed
++)
2395 printk(KERN_NOTICE
"MV-643xx 10/100/1000 ethernet "
2396 "driver version %s\n", mv643xx_eth_driver_version
);
2399 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
2404 msp
= kmalloc(sizeof(*msp
), GFP_KERNEL
);
2407 memset(msp
, 0, sizeof(*msp
));
2409 msp
->base
= ioremap(res
->start
, res
->end
- res
->start
+ 1);
2410 if (msp
->base
== NULL
)
2414 * Set up and register SMI bus.
2416 if (pd
== NULL
|| pd
->shared_smi
== NULL
) {
2417 msp
->smi_bus
= mdiobus_alloc();
2418 if (msp
->smi_bus
== NULL
)
2421 msp
->smi_bus
->priv
= msp
;
2422 msp
->smi_bus
->name
= "mv643xx_eth smi";
2423 msp
->smi_bus
->read
= smi_bus_read
;
2424 msp
->smi_bus
->write
= smi_bus_write
,
2425 snprintf(msp
->smi_bus
->id
, MII_BUS_ID_SIZE
, "%d", pdev
->id
);
2426 msp
->smi_bus
->parent
= &pdev
->dev
;
2427 msp
->smi_bus
->phy_mask
= 0xffffffff;
2428 if (mdiobus_register(msp
->smi_bus
) < 0)
2429 goto out_free_mii_bus
;
2432 msp
->smi
= platform_get_drvdata(pd
->shared_smi
);
2435 msp
->err_interrupt
= NO_IRQ
;
2436 init_waitqueue_head(&msp
->smi_busy_wait
);
2439 * Check whether the error interrupt is hooked up.
2441 res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, 0);
2445 err
= request_irq(res
->start
, mv643xx_eth_err_irq
,
2446 IRQF_SHARED
, "mv643xx_eth", msp
);
2448 writel(ERR_INT_SMI_DONE
, msp
->base
+ ERR_INT_MASK
);
2449 msp
->err_interrupt
= res
->start
;
2454 * (Re-)program MBUS remapping windows if we are asked to.
2456 if (pd
!= NULL
&& pd
->dram
!= NULL
)
2457 mv643xx_eth_conf_mbus_windows(msp
, pd
->dram
);
2460 * Detect hardware parameters.
2462 msp
->t_clk
= (pd
!= NULL
&& pd
->t_clk
!= 0) ? pd
->t_clk
: 133000000;
2463 infer_hw_params(msp
);
2465 platform_set_drvdata(pdev
, msp
);
2470 mdiobus_free(msp
->smi_bus
);
2479 static int mv643xx_eth_shared_remove(struct platform_device
*pdev
)
2481 struct mv643xx_eth_shared_private
*msp
= platform_get_drvdata(pdev
);
2482 struct mv643xx_eth_shared_platform_data
*pd
= pdev
->dev
.platform_data
;
2484 if (pd
== NULL
|| pd
->shared_smi
== NULL
) {
2485 mdiobus_unregister(msp
->smi_bus
);
2486 mdiobus_free(msp
->smi_bus
);
2488 if (msp
->err_interrupt
!= NO_IRQ
)
2489 free_irq(msp
->err_interrupt
, msp
);
2496 static struct platform_driver mv643xx_eth_shared_driver
= {
2497 .probe
= mv643xx_eth_shared_probe
,
2498 .remove
= mv643xx_eth_shared_remove
,
2500 .name
= MV643XX_ETH_SHARED_NAME
,
2501 .owner
= THIS_MODULE
,
2505 static void phy_addr_set(struct mv643xx_eth_private
*mp
, int phy_addr
)
2507 int addr_shift
= 5 * mp
->port_num
;
2510 data
= rdl(mp
, PHY_ADDR
);
2511 data
&= ~(0x1f << addr_shift
);
2512 data
|= (phy_addr
& 0x1f) << addr_shift
;
2513 wrl(mp
, PHY_ADDR
, data
);
2516 static int phy_addr_get(struct mv643xx_eth_private
*mp
)
2520 data
= rdl(mp
, PHY_ADDR
);
2522 return (data
>> (5 * mp
->port_num
)) & 0x1f;
2525 static void set_params(struct mv643xx_eth_private
*mp
,
2526 struct mv643xx_eth_platform_data
*pd
)
2528 struct net_device
*dev
= mp
->dev
;
2530 if (is_valid_ether_addr(pd
->mac_addr
))
2531 memcpy(dev
->dev_addr
, pd
->mac_addr
, 6);
2533 uc_addr_get(mp
, dev
->dev_addr
);
2535 mp
->default_rx_ring_size
= DEFAULT_RX_QUEUE_SIZE
;
2536 if (pd
->rx_queue_size
)
2537 mp
->default_rx_ring_size
= pd
->rx_queue_size
;
2538 mp
->rx_desc_sram_addr
= pd
->rx_sram_addr
;
2539 mp
->rx_desc_sram_size
= pd
->rx_sram_size
;
2541 mp
->rxq_count
= pd
->rx_queue_count
? : 1;
2543 mp
->default_tx_ring_size
= DEFAULT_TX_QUEUE_SIZE
;
2544 if (pd
->tx_queue_size
)
2545 mp
->default_tx_ring_size
= pd
->tx_queue_size
;
2546 mp
->tx_desc_sram_addr
= pd
->tx_sram_addr
;
2547 mp
->tx_desc_sram_size
= pd
->tx_sram_size
;
2549 mp
->txq_count
= pd
->tx_queue_count
? : 1;
2552 static struct phy_device
*phy_scan(struct mv643xx_eth_private
*mp
,
2555 struct mii_bus
*bus
= mp
->shared
->smi
->smi_bus
;
2556 struct phy_device
*phydev
;
2561 if (phy_addr
== MV643XX_ETH_PHY_ADDR_DEFAULT
) {
2562 start
= phy_addr_get(mp
) & 0x1f;
2565 start
= phy_addr
& 0x1f;
2570 for (i
= 0; i
< num
; i
++) {
2571 int addr
= (start
+ i
) & 0x1f;
2573 if (bus
->phy_map
[addr
] == NULL
)
2574 mdiobus_scan(bus
, addr
);
2576 if (phydev
== NULL
) {
2577 phydev
= bus
->phy_map
[addr
];
2579 phy_addr_set(mp
, addr
);
2586 static void phy_init(struct mv643xx_eth_private
*mp
, int speed
, int duplex
)
2588 struct phy_device
*phy
= mp
->phy
;
2592 phy_attach(mp
->dev
, phy
->dev
.bus_id
, 0, PHY_INTERFACE_MODE_GMII
);
2595 phy
->autoneg
= AUTONEG_ENABLE
;
2598 phy
->advertising
= phy
->supported
| ADVERTISED_Autoneg
;
2600 phy
->autoneg
= AUTONEG_DISABLE
;
2601 phy
->advertising
= 0;
2603 phy
->duplex
= duplex
;
2605 phy_start_aneg(phy
);
2608 static void init_pscr(struct mv643xx_eth_private
*mp
, int speed
, int duplex
)
2612 pscr
= rdlp(mp
, PORT_SERIAL_CONTROL
);
2613 if (pscr
& SERIAL_PORT_ENABLE
) {
2614 pscr
&= ~SERIAL_PORT_ENABLE
;
2615 wrlp(mp
, PORT_SERIAL_CONTROL
, pscr
);
2618 pscr
= MAX_RX_PACKET_9700BYTE
| SERIAL_PORT_CONTROL_RESERVED
;
2619 if (mp
->phy
== NULL
) {
2620 pscr
|= DISABLE_AUTO_NEG_SPEED_GMII
;
2621 if (speed
== SPEED_1000
)
2622 pscr
|= SET_GMII_SPEED_TO_1000
;
2623 else if (speed
== SPEED_100
)
2624 pscr
|= SET_MII_SPEED_TO_100
;
2626 pscr
|= DISABLE_AUTO_NEG_FOR_FLOW_CTRL
;
2628 pscr
|= DISABLE_AUTO_NEG_FOR_DUPLEX
;
2629 if (duplex
== DUPLEX_FULL
)
2630 pscr
|= SET_FULL_DUPLEX_MODE
;
2633 wrlp(mp
, PORT_SERIAL_CONTROL
, pscr
);
2636 static int mv643xx_eth_probe(struct platform_device
*pdev
)
2638 struct mv643xx_eth_platform_data
*pd
;
2639 struct mv643xx_eth_private
*mp
;
2640 struct net_device
*dev
;
2641 struct resource
*res
;
2644 pd
= pdev
->dev
.platform_data
;
2646 dev_printk(KERN_ERR
, &pdev
->dev
,
2647 "no mv643xx_eth_platform_data\n");
2651 if (pd
->shared
== NULL
) {
2652 dev_printk(KERN_ERR
, &pdev
->dev
,
2653 "no mv643xx_eth_platform_data->shared\n");
2657 dev
= alloc_etherdev_mq(sizeof(struct mv643xx_eth_private
), 8);
2661 mp
= netdev_priv(dev
);
2662 platform_set_drvdata(pdev
, mp
);
2664 mp
->shared
= platform_get_drvdata(pd
->shared
);
2665 mp
->base
= mp
->shared
->base
+ 0x0400 + (pd
->port_number
<< 10);
2666 mp
->port_num
= pd
->port_number
;
2671 dev
->real_num_tx_queues
= mp
->txq_count
;
2673 if (pd
->phy_addr
!= MV643XX_ETH_PHY_NONE
)
2674 mp
->phy
= phy_scan(mp
, pd
->phy_addr
);
2676 if (mp
->phy
!= NULL
) {
2677 phy_init(mp
, pd
->speed
, pd
->duplex
);
2678 SET_ETHTOOL_OPS(dev
, &mv643xx_eth_ethtool_ops
);
2680 SET_ETHTOOL_OPS(dev
, &mv643xx_eth_ethtool_ops_phyless
);
2683 init_pscr(mp
, pd
->speed
, pd
->duplex
);
2686 mib_counters_clear(mp
);
2688 init_timer(&mp
->mib_counters_timer
);
2689 mp
->mib_counters_timer
.data
= (unsigned long)mp
;
2690 mp
->mib_counters_timer
.function
= mib_counters_timer_wrapper
;
2691 mp
->mib_counters_timer
.expires
= jiffies
+ 30 * HZ
;
2692 add_timer(&mp
->mib_counters_timer
);
2694 spin_lock_init(&mp
->mib_counters_lock
);
2696 INIT_WORK(&mp
->tx_timeout_task
, tx_timeout_task
);
2698 netif_napi_add(dev
, &mp
->napi
, mv643xx_eth_poll
, 128);
2700 init_timer(&mp
->rx_oom
);
2701 mp
->rx_oom
.data
= (unsigned long)mp
;
2702 mp
->rx_oom
.function
= oom_timer_wrapper
;
2705 res
= platform_get_resource(pdev
, IORESOURCE_IRQ
, 0);
2707 dev
->irq
= res
->start
;
2709 dev
->get_stats
= mv643xx_eth_get_stats
;
2710 dev
->hard_start_xmit
= mv643xx_eth_xmit
;
2711 dev
->open
= mv643xx_eth_open
;
2712 dev
->stop
= mv643xx_eth_stop
;
2713 dev
->set_rx_mode
= mv643xx_eth_set_rx_mode
;
2714 dev
->set_mac_address
= mv643xx_eth_set_mac_address
;
2715 dev
->do_ioctl
= mv643xx_eth_ioctl
;
2716 dev
->change_mtu
= mv643xx_eth_change_mtu
;
2717 dev
->tx_timeout
= mv643xx_eth_tx_timeout
;
2718 #ifdef CONFIG_NET_POLL_CONTROLLER
2719 dev
->poll_controller
= mv643xx_eth_netpoll
;
2721 dev
->watchdog_timeo
= 2 * HZ
;
2724 dev
->features
= NETIF_F_SG
| NETIF_F_IP_CSUM
;
2725 dev
->vlan_features
= NETIF_F_SG
| NETIF_F_IP_CSUM
;
2727 SET_NETDEV_DEV(dev
, &pdev
->dev
);
2729 if (mp
->shared
->win_protect
)
2730 wrl(mp
, WINDOW_PROTECT(mp
->port_num
), mp
->shared
->win_protect
);
2732 err
= register_netdev(dev
);
2736 dev_printk(KERN_NOTICE
, &dev
->dev
, "port %d with MAC address %pM\n",
2737 mp
->port_num
, dev
->dev_addr
);
2739 if (mp
->tx_desc_sram_size
> 0)
2740 dev_printk(KERN_NOTICE
, &dev
->dev
, "configured with sram\n");
2750 static int mv643xx_eth_remove(struct platform_device
*pdev
)
2752 struct mv643xx_eth_private
*mp
= platform_get_drvdata(pdev
);
2754 unregister_netdev(mp
->dev
);
2755 if (mp
->phy
!= NULL
)
2756 phy_detach(mp
->phy
);
2757 flush_scheduled_work();
2758 free_netdev(mp
->dev
);
2760 platform_set_drvdata(pdev
, NULL
);
2765 static void mv643xx_eth_shutdown(struct platform_device
*pdev
)
2767 struct mv643xx_eth_private
*mp
= platform_get_drvdata(pdev
);
2769 /* Mask all interrupts on ethernet port */
2770 wrlp(mp
, INT_MASK
, 0);
2773 if (netif_running(mp
->dev
))
2777 static struct platform_driver mv643xx_eth_driver
= {
2778 .probe
= mv643xx_eth_probe
,
2779 .remove
= mv643xx_eth_remove
,
2780 .shutdown
= mv643xx_eth_shutdown
,
2782 .name
= MV643XX_ETH_NAME
,
2783 .owner
= THIS_MODULE
,
2787 static int __init
mv643xx_eth_init_module(void)
2791 rc
= platform_driver_register(&mv643xx_eth_shared_driver
);
2793 rc
= platform_driver_register(&mv643xx_eth_driver
);
2795 platform_driver_unregister(&mv643xx_eth_shared_driver
);
2800 module_init(mv643xx_eth_init_module
);
2802 static void __exit
mv643xx_eth_cleanup_module(void)
2804 platform_driver_unregister(&mv643xx_eth_driver
);
2805 platform_driver_unregister(&mv643xx_eth_shared_driver
);
2807 module_exit(mv643xx_eth_cleanup_module
);
2809 MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, "
2810 "Manish Lachwani, Dale Farnsworth and Lennert Buytenhek");
2811 MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
2812 MODULE_LICENSE("GPL");
2813 MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME
);
2814 MODULE_ALIAS("platform:" MV643XX_ETH_NAME
);