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 <asm/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))
83 #define PORT_CONFIG(p) (0x0400 + ((p) << 10))
84 #define UNICAST_PROMISCUOUS_MODE 0x00000001
85 #define PORT_CONFIG_EXT(p) (0x0404 + ((p) << 10))
86 #define MAC_ADDR_LOW(p) (0x0414 + ((p) << 10))
87 #define MAC_ADDR_HIGH(p) (0x0418 + ((p) << 10))
88 #define SDMA_CONFIG(p) (0x041c + ((p) << 10))
89 #define PORT_SERIAL_CONTROL(p) (0x043c + ((p) << 10))
90 #define PORT_STATUS(p) (0x0444 + ((p) << 10))
91 #define TX_FIFO_EMPTY 0x00000400
92 #define TX_IN_PROGRESS 0x00000080
93 #define PORT_SPEED_MASK 0x00000030
94 #define PORT_SPEED_1000 0x00000010
95 #define PORT_SPEED_100 0x00000020
96 #define PORT_SPEED_10 0x00000000
97 #define FLOW_CONTROL_ENABLED 0x00000008
98 #define FULL_DUPLEX 0x00000004
99 #define LINK_UP 0x00000002
100 #define TXQ_COMMAND(p) (0x0448 + ((p) << 10))
101 #define TXQ_FIX_PRIO_CONF(p) (0x044c + ((p) << 10))
102 #define TX_BW_RATE(p) (0x0450 + ((p) << 10))
103 #define TX_BW_MTU(p) (0x0458 + ((p) << 10))
104 #define TX_BW_BURST(p) (0x045c + ((p) << 10))
105 #define INT_CAUSE(p) (0x0460 + ((p) << 10))
106 #define INT_TX_END 0x07f80000
107 #define INT_RX 0x000003fc
108 #define INT_EXT 0x00000002
109 #define INT_CAUSE_EXT(p) (0x0464 + ((p) << 10))
110 #define INT_EXT_LINK_PHY 0x00110000
111 #define INT_EXT_TX 0x000000ff
112 #define INT_MASK(p) (0x0468 + ((p) << 10))
113 #define INT_MASK_EXT(p) (0x046c + ((p) << 10))
114 #define TX_FIFO_URGENT_THRESHOLD(p) (0x0474 + ((p) << 10))
115 #define TXQ_FIX_PRIO_CONF_MOVED(p) (0x04dc + ((p) << 10))
116 #define TX_BW_RATE_MOVED(p) (0x04e0 + ((p) << 10))
117 #define TX_BW_MTU_MOVED(p) (0x04e8 + ((p) << 10))
118 #define TX_BW_BURST_MOVED(p) (0x04ec + ((p) << 10))
119 #define RXQ_CURRENT_DESC_PTR(p, q) (0x060c + ((p) << 10) + ((q) << 4))
120 #define RXQ_COMMAND(p) (0x0680 + ((p) << 10))
121 #define TXQ_CURRENT_DESC_PTR(p, q) (0x06c0 + ((p) << 10) + ((q) << 2))
122 #define TXQ_BW_TOKENS(p, q) (0x0700 + ((p) << 10) + ((q) << 4))
123 #define TXQ_BW_CONF(p, q) (0x0704 + ((p) << 10) + ((q) << 4))
124 #define TXQ_BW_WRR_CONF(p, q) (0x0708 + ((p) << 10) + ((q) << 4))
125 #define MIB_COUNTERS(p) (0x1000 + ((p) << 7))
126 #define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10))
127 #define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10))
128 #define UNICAST_TABLE(p) (0x1600 + ((p) << 10))
132 * SDMA configuration register.
134 #define RX_BURST_SIZE_16_64BIT (4 << 1)
135 #define BLM_RX_NO_SWAP (1 << 4)
136 #define BLM_TX_NO_SWAP (1 << 5)
137 #define TX_BURST_SIZE_16_64BIT (4 << 22)
139 #if defined(__BIG_ENDIAN)
140 #define PORT_SDMA_CONFIG_DEFAULT_VALUE \
141 RX_BURST_SIZE_16_64BIT | \
142 TX_BURST_SIZE_16_64BIT
143 #elif defined(__LITTLE_ENDIAN)
144 #define PORT_SDMA_CONFIG_DEFAULT_VALUE \
145 RX_BURST_SIZE_16_64BIT | \
148 TX_BURST_SIZE_16_64BIT
150 #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
155 * Port serial control register.
157 #define SET_MII_SPEED_TO_100 (1 << 24)
158 #define SET_GMII_SPEED_TO_1000 (1 << 23)
159 #define SET_FULL_DUPLEX_MODE (1 << 21)
160 #define MAX_RX_PACKET_9700BYTE (5 << 17)
161 #define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13)
162 #define DO_NOT_FORCE_LINK_FAIL (1 << 10)
163 #define SERIAL_PORT_CONTROL_RESERVED (1 << 9)
164 #define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3)
165 #define DISABLE_AUTO_NEG_FOR_DUPLEX (1 << 2)
166 #define FORCE_LINK_PASS (1 << 1)
167 #define SERIAL_PORT_ENABLE (1 << 0)
169 #define DEFAULT_RX_QUEUE_SIZE 128
170 #define DEFAULT_TX_QUEUE_SIZE 256
176 #if defined(__BIG_ENDIAN)
178 u16 byte_cnt; /* Descriptor buffer byte count */
179 u16 buf_size; /* Buffer size */
180 u32 cmd_sts; /* Descriptor command status */
181 u32 next_desc_ptr; /* Next descriptor pointer */
182 u32 buf_ptr; /* Descriptor buffer pointer */
186 u16 byte_cnt; /* buffer byte count */
187 u16 l4i_chk; /* CPU provided TCP checksum */
188 u32 cmd_sts; /* Command/status field */
189 u32 next_desc_ptr; /* Pointer to next descriptor */
190 u32 buf_ptr; /* pointer to buffer for this descriptor*/
192 #elif defined(__LITTLE_ENDIAN)
194 u32 cmd_sts; /* Descriptor command status */
195 u16 buf_size; /* Buffer size */
196 u16 byte_cnt; /* Descriptor buffer byte count */
197 u32 buf_ptr; /* Descriptor buffer pointer */
198 u32 next_desc_ptr; /* Next descriptor pointer */
202 u32 cmd_sts; /* Command/status field */
203 u16 l4i_chk; /* CPU provided TCP checksum */
204 u16 byte_cnt; /* buffer byte count */
205 u32 buf_ptr; /* pointer to buffer for this descriptor*/
206 u32 next_desc_ptr; /* Pointer to next descriptor */
209 #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
212 /* RX & TX descriptor command */
213 #define BUFFER_OWNED_BY_DMA 0x80000000
215 /* RX & TX descriptor status */
216 #define ERROR_SUMMARY 0x00000001
218 /* RX descriptor status */
219 #define LAYER_4_CHECKSUM_OK 0x40000000
220 #define RX_ENABLE_INTERRUPT 0x20000000
221 #define RX_FIRST_DESC 0x08000000
222 #define RX_LAST_DESC 0x04000000
224 /* TX descriptor command */
225 #define TX_ENABLE_INTERRUPT 0x00800000
226 #define GEN_CRC 0x00400000
227 #define TX_FIRST_DESC 0x00200000
228 #define TX_LAST_DESC 0x00100000
229 #define ZERO_PADDING 0x00080000
230 #define GEN_IP_V4_CHECKSUM 0x00040000
231 #define GEN_TCP_UDP_CHECKSUM 0x00020000
232 #define UDP_FRAME 0x00010000
233 #define MAC_HDR_EXTRA_4_BYTES 0x00008000
234 #define MAC_HDR_EXTRA_8_BYTES 0x00000200
236 #define TX_IHL_SHIFT 11
239 /* global *******************************************************************/
240 struct mv643xx_eth_shared_private {
242 * Ethernet controller base address.
247 * Points at the right SMI instance to use.
249 struct mv643xx_eth_shared_private *smi;
252 * Provides access to local SMI interface.
254 struct mii_bus *smi_bus;
257 * If we have access to the error interrupt pin (which is
258 * somewhat misnamed as it not only reflects internal errors
259 * but also reflects SMI completion), use that to wait for
260 * SMI access completion instead of polling the SMI busy bit.
263 wait_queue_head_t smi_busy_wait;
266 * Per-port MBUS window access register value.
271 * Hardware-specific parameters.
274 int extended_rx_coal_limit;
278 #define TX_BW_CONTROL_ABSENT 0
279 #define TX_BW_CONTROL_OLD_LAYOUT 1
280 #define TX_BW_CONTROL_NEW_LAYOUT 2
283 /* per-port *****************************************************************/
284 struct mib_counters {
285 u64 good_octets_received;
286 u32 bad_octets_received;
287 u32 internal_mac_transmit_err;
288 u32 good_frames_received;
289 u32 bad_frames_received;
290 u32 broadcast_frames_received;
291 u32 multicast_frames_received;
292 u32 frames_64_octets;
293 u32 frames_65_to_127_octets;
294 u32 frames_128_to_255_octets;
295 u32 frames_256_to_511_octets;
296 u32 frames_512_to_1023_octets;
297 u32 frames_1024_to_max_octets;
298 u64 good_octets_sent;
299 u32 good_frames_sent;
300 u32 excessive_collision;
301 u32 multicast_frames_sent;
302 u32 broadcast_frames_sent;
303 u32 unrec_mac_control_received;
305 u32 good_fc_received;
307 u32 undersize_received;
308 u32 fragments_received;
309 u32 oversize_received;
311 u32 mac_receive_error;
326 struct rx_desc *rx_desc_area;
327 dma_addr_t rx_desc_dma;
328 int rx_desc_area_size;
329 struct sk_buff **rx_skb;
341 struct tx_desc *tx_desc_area;
342 dma_addr_t tx_desc_dma;
343 int tx_desc_area_size;
345 struct sk_buff_head tx_skb;
347 unsigned long tx_packets;
348 unsigned long tx_bytes;
349 unsigned long tx_dropped;
352 struct mv643xx_eth_private {
353 struct mv643xx_eth_shared_private *shared;
356 struct net_device *dev;
358 struct phy_device *phy;
360 struct timer_list mib_counters_timer;
361 spinlock_t mib_counters_lock;
362 struct mib_counters mib_counters;
364 struct work_struct tx_timeout_task;
366 struct napi_struct napi;
375 struct sk_buff_head rx_recycle;
380 int default_rx_ring_size;
381 unsigned long rx_desc_sram_addr;
382 int rx_desc_sram_size;
384 struct timer_list rx_oom;
385 struct rx_queue rxq[8];
390 int default_tx_ring_size;
391 unsigned long tx_desc_sram_addr;
392 int tx_desc_sram_size;
394 struct tx_queue txq[8];
398 /* port register accessors **************************************************/
399 static inline u32 rdl(struct mv643xx_eth_private *mp, int offset)
401 return readl(mp->shared->base + offset);
404 static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data)
406 writel(data, mp->shared->base + offset);
410 /* rxq/txq helper functions *************************************************/
411 static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq)
413 return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]);
416 static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq)
418 return container_of(txq, struct mv643xx_eth_private, txq[txq->index]);
421 static void rxq_enable(struct rx_queue *rxq)
423 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
424 wrl(mp, RXQ_COMMAND(mp->port_num), 1 << rxq->index);
427 static void rxq_disable(struct rx_queue *rxq)
429 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
430 u8 mask = 1 << rxq->index;
432 wrl(mp, RXQ_COMMAND(mp->port_num), mask << 8);
433 while (rdl(mp, RXQ_COMMAND(mp->port_num)) & mask)
437 static void txq_reset_hw_ptr(struct tx_queue *txq)
439 struct mv643xx_eth_private *mp = txq_to_mp(txq);
440 int off = TXQ_CURRENT_DESC_PTR(mp->port_num, txq->index);
443 addr = (u32)txq->tx_desc_dma;
444 addr += txq->tx_curr_desc * sizeof(struct tx_desc);
448 static void txq_enable(struct tx_queue *txq)
450 struct mv643xx_eth_private *mp = txq_to_mp(txq);
451 wrl(mp, TXQ_COMMAND(mp->port_num), 1 << txq->index);
454 static void txq_disable(struct tx_queue *txq)
456 struct mv643xx_eth_private *mp = txq_to_mp(txq);
457 u8 mask = 1 << txq->index;
459 wrl(mp, TXQ_COMMAND(mp->port_num), mask << 8);
460 while (rdl(mp, TXQ_COMMAND(mp->port_num)) & mask)
464 static void txq_maybe_wake(struct tx_queue *txq)
466 struct mv643xx_eth_private *mp = txq_to_mp(txq);
467 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
469 if (netif_tx_queue_stopped(nq)) {
470 __netif_tx_lock(nq, smp_processor_id());
471 if (txq->tx_ring_size - txq->tx_desc_count >= MAX_SKB_FRAGS + 1)
472 netif_tx_wake_queue(nq);
473 __netif_tx_unlock(nq);
478 /* rx napi ******************************************************************/
479 static int rxq_process(struct rx_queue *rxq, int budget)
481 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
482 struct net_device_stats *stats = &mp->dev->stats;
486 while (rx < budget && rxq->rx_desc_count) {
487 struct rx_desc *rx_desc;
488 unsigned int cmd_sts;
492 rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc];
494 cmd_sts = rx_desc->cmd_sts;
495 if (cmd_sts & BUFFER_OWNED_BY_DMA)
499 skb = rxq->rx_skb[rxq->rx_curr_desc];
500 rxq->rx_skb[rxq->rx_curr_desc] = NULL;
503 if (rxq->rx_curr_desc == rxq->rx_ring_size)
504 rxq->rx_curr_desc = 0;
506 dma_unmap_single(NULL, rx_desc->buf_ptr,
507 rx_desc->buf_size, DMA_FROM_DEVICE);
508 rxq->rx_desc_count--;
511 mp->work_rx_refill |= 1 << rxq->index;
513 byte_cnt = rx_desc->byte_cnt;
518 * Note that the descriptor byte count includes 2 dummy
519 * bytes automatically inserted by the hardware at the
520 * start of the packet (which we don't count), and a 4
521 * byte CRC at the end of the packet (which we do count).
524 stats->rx_bytes += byte_cnt - 2;
527 * In case we received a packet without first / last bits
528 * on, or the error summary bit is set, the packet needs
531 if (((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
532 (RX_FIRST_DESC | RX_LAST_DESC))
533 || (cmd_sts & ERROR_SUMMARY)) {
536 if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
537 (RX_FIRST_DESC | RX_LAST_DESC)) {
539 dev_printk(KERN_ERR, &mp->dev->dev,
540 "received packet spanning "
541 "multiple descriptors\n");
544 if (cmd_sts & ERROR_SUMMARY)
550 * The -4 is for the CRC in the trailer of the
553 skb_put(skb, byte_cnt - 2 - 4);
555 if (cmd_sts & LAYER_4_CHECKSUM_OK)
556 skb->ip_summed = CHECKSUM_UNNECESSARY;
557 skb->protocol = eth_type_trans(skb, mp->dev);
558 netif_receive_skb(skb);
561 mp->dev->last_rx = jiffies;
565 mp->work_rx &= ~(1 << rxq->index);
570 static int rxq_refill(struct rx_queue *rxq, int budget)
572 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
576 while (refilled < budget && rxq->rx_desc_count < rxq->rx_ring_size) {
581 skb = __skb_dequeue(&mp->rx_recycle);
583 skb = dev_alloc_skb(mp->skb_size +
584 dma_get_cache_alignment() - 1);
587 mp->work_rx_oom |= 1 << rxq->index;
591 unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1);
593 skb_reserve(skb, dma_get_cache_alignment() - unaligned);
596 rxq->rx_desc_count++;
598 rx = rxq->rx_used_desc++;
599 if (rxq->rx_used_desc == rxq->rx_ring_size)
600 rxq->rx_used_desc = 0;
602 rxq->rx_desc_area[rx].buf_ptr = dma_map_single(NULL, skb->data,
603 mp->skb_size, DMA_FROM_DEVICE);
604 rxq->rx_desc_area[rx].buf_size = mp->skb_size;
605 rxq->rx_skb[rx] = skb;
607 rxq->rx_desc_area[rx].cmd_sts = BUFFER_OWNED_BY_DMA |
612 * The hardware automatically prepends 2 bytes of
613 * dummy data to each received packet, so that the
614 * IP header ends up 16-byte aligned.
619 if (refilled < budget)
620 mp->work_rx_refill &= ~(1 << rxq->index);
627 /* tx ***********************************************************************/
628 static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
632 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
633 skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag];
634 if (fragp->size <= 8 && fragp->page_offset & 7)
641 static int txq_alloc_desc_index(struct tx_queue *txq)
645 BUG_ON(txq->tx_desc_count >= txq->tx_ring_size);
647 tx_desc_curr = txq->tx_curr_desc++;
648 if (txq->tx_curr_desc == txq->tx_ring_size)
649 txq->tx_curr_desc = 0;
651 BUG_ON(txq->tx_curr_desc == txq->tx_used_desc);
656 static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb)
658 int nr_frags = skb_shinfo(skb)->nr_frags;
661 for (frag = 0; frag < nr_frags; frag++) {
662 skb_frag_t *this_frag;
664 struct tx_desc *desc;
666 this_frag = &skb_shinfo(skb)->frags[frag];
667 tx_index = txq_alloc_desc_index(txq);
668 desc = &txq->tx_desc_area[tx_index];
671 * The last fragment will generate an interrupt
672 * which will free the skb on TX completion.
674 if (frag == nr_frags - 1) {
675 desc->cmd_sts = BUFFER_OWNED_BY_DMA |
676 ZERO_PADDING | TX_LAST_DESC |
679 desc->cmd_sts = BUFFER_OWNED_BY_DMA;
683 desc->byte_cnt = this_frag->size;
684 desc->buf_ptr = dma_map_page(NULL, this_frag->page,
685 this_frag->page_offset,
691 static inline __be16 sum16_as_be(__sum16 sum)
693 return (__force __be16)sum;
696 static int txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb)
698 struct mv643xx_eth_private *mp = txq_to_mp(txq);
699 int nr_frags = skb_shinfo(skb)->nr_frags;
701 struct tx_desc *desc;
706 cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA;
709 if (skb->ip_summed == CHECKSUM_PARTIAL) {
712 BUG_ON(skb->protocol != htons(ETH_P_IP) &&
713 skb->protocol != htons(ETH_P_8021Q));
715 tag_bytes = (void *)ip_hdr(skb) - (void *)skb->data - ETH_HLEN;
716 if (unlikely(tag_bytes & ~12)) {
717 if (skb_checksum_help(skb) == 0)
724 cmd_sts |= MAC_HDR_EXTRA_4_BYTES;
726 cmd_sts |= MAC_HDR_EXTRA_8_BYTES;
728 cmd_sts |= GEN_TCP_UDP_CHECKSUM |
730 ip_hdr(skb)->ihl << TX_IHL_SHIFT;
732 switch (ip_hdr(skb)->protocol) {
734 cmd_sts |= UDP_FRAME;
735 l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check));
738 l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check));
745 /* Errata BTS #50, IHL must be 5 if no HW checksum */
746 cmd_sts |= 5 << TX_IHL_SHIFT;
749 tx_index = txq_alloc_desc_index(txq);
750 desc = &txq->tx_desc_area[tx_index];
753 txq_submit_frag_skb(txq, skb);
754 length = skb_headlen(skb);
756 cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT;
760 desc->l4i_chk = l4i_chk;
761 desc->byte_cnt = length;
762 desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE);
764 __skb_queue_tail(&txq->tx_skb, skb);
766 /* ensure all other descriptors are written before first cmd_sts */
768 desc->cmd_sts = cmd_sts;
770 /* clear TX_END status */
771 mp->work_tx_end &= ~(1 << txq->index);
773 /* ensure all descriptors are written before poking hardware */
777 txq->tx_desc_count += nr_frags + 1;
782 static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev)
784 struct mv643xx_eth_private *mp = netdev_priv(dev);
786 struct tx_queue *txq;
787 struct netdev_queue *nq;
789 queue = skb_get_queue_mapping(skb);
790 txq = mp->txq + queue;
791 nq = netdev_get_tx_queue(dev, queue);
793 if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) {
795 dev_printk(KERN_DEBUG, &dev->dev,
796 "failed to linearize skb with tiny "
797 "unaligned fragment\n");
798 return NETDEV_TX_BUSY;
801 if (txq->tx_ring_size - txq->tx_desc_count < MAX_SKB_FRAGS + 1) {
803 dev_printk(KERN_ERR, &dev->dev, "tx queue full?!\n");
808 if (!txq_submit_skb(txq, skb)) {
811 txq->tx_bytes += skb->len;
813 dev->trans_start = jiffies;
815 entries_left = txq->tx_ring_size - txq->tx_desc_count;
816 if (entries_left < MAX_SKB_FRAGS + 1)
817 netif_tx_stop_queue(nq);
824 /* tx napi ******************************************************************/
825 static void txq_kick(struct tx_queue *txq)
827 struct mv643xx_eth_private *mp = txq_to_mp(txq);
828 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
832 __netif_tx_lock(nq, smp_processor_id());
834 if (rdl(mp, TXQ_COMMAND(mp->port_num)) & (1 << txq->index))
837 hw_desc_ptr = rdl(mp, TXQ_CURRENT_DESC_PTR(mp->port_num, txq->index));
838 expected_ptr = (u32)txq->tx_desc_dma +
839 txq->tx_curr_desc * sizeof(struct tx_desc);
841 if (hw_desc_ptr != expected_ptr)
845 __netif_tx_unlock(nq);
847 mp->work_tx_end &= ~(1 << txq->index);
850 static int txq_reclaim(struct tx_queue *txq, int budget, int force)
852 struct mv643xx_eth_private *mp = txq_to_mp(txq);
853 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
856 __netif_tx_lock(nq, smp_processor_id());
859 while (reclaimed < budget && txq->tx_desc_count > 0) {
861 struct tx_desc *desc;
865 tx_index = txq->tx_used_desc;
866 desc = &txq->tx_desc_area[tx_index];
867 cmd_sts = desc->cmd_sts;
869 if (cmd_sts & BUFFER_OWNED_BY_DMA) {
872 desc->cmd_sts = cmd_sts & ~BUFFER_OWNED_BY_DMA;
875 txq->tx_used_desc = tx_index + 1;
876 if (txq->tx_used_desc == txq->tx_ring_size)
877 txq->tx_used_desc = 0;
880 txq->tx_desc_count--;
883 if (cmd_sts & TX_LAST_DESC)
884 skb = __skb_dequeue(&txq->tx_skb);
886 if (cmd_sts & ERROR_SUMMARY) {
887 dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n");
888 mp->dev->stats.tx_errors++;
891 if (cmd_sts & TX_FIRST_DESC) {
892 dma_unmap_single(NULL, desc->buf_ptr,
893 desc->byte_cnt, DMA_TO_DEVICE);
895 dma_unmap_page(NULL, desc->buf_ptr,
896 desc->byte_cnt, DMA_TO_DEVICE);
900 if (skb_queue_len(&mp->rx_recycle) <
901 mp->default_rx_ring_size &&
902 skb_recycle_check(skb, mp->skb_size))
903 __skb_queue_head(&mp->rx_recycle, skb);
909 __netif_tx_unlock(nq);
911 if (reclaimed < budget)
912 mp->work_tx &= ~(1 << txq->index);
918 /* tx rate control **********************************************************/
920 * Set total maximum TX rate (shared by all TX queues for this port)
921 * to 'rate' bits per second, with a maximum burst of 'burst' bytes.
923 static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst)
929 token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
930 if (token_rate > 1023)
933 mtu = (mp->dev->mtu + 255) >> 8;
937 bucket_size = (burst + 255) >> 8;
938 if (bucket_size > 65535)
941 switch (mp->shared->tx_bw_control) {
942 case TX_BW_CONTROL_OLD_LAYOUT:
943 wrl(mp, TX_BW_RATE(mp->port_num), token_rate);
944 wrl(mp, TX_BW_MTU(mp->port_num), mtu);
945 wrl(mp, TX_BW_BURST(mp->port_num), bucket_size);
947 case TX_BW_CONTROL_NEW_LAYOUT:
948 wrl(mp, TX_BW_RATE_MOVED(mp->port_num), token_rate);
949 wrl(mp, TX_BW_MTU_MOVED(mp->port_num), mtu);
950 wrl(mp, TX_BW_BURST_MOVED(mp->port_num), bucket_size);
955 static void txq_set_rate(struct tx_queue *txq, int rate, int burst)
957 struct mv643xx_eth_private *mp = txq_to_mp(txq);
961 token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
962 if (token_rate > 1023)
965 bucket_size = (burst + 255) >> 8;
966 if (bucket_size > 65535)
969 wrl(mp, TXQ_BW_TOKENS(mp->port_num, txq->index), token_rate << 14);
970 wrl(mp, TXQ_BW_CONF(mp->port_num, txq->index),
971 (bucket_size << 10) | token_rate);
974 static void txq_set_fixed_prio_mode(struct tx_queue *txq)
976 struct mv643xx_eth_private *mp = txq_to_mp(txq);
981 * Turn on fixed priority mode.
984 switch (mp->shared->tx_bw_control) {
985 case TX_BW_CONTROL_OLD_LAYOUT:
986 off = TXQ_FIX_PRIO_CONF(mp->port_num);
988 case TX_BW_CONTROL_NEW_LAYOUT:
989 off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num);
995 val |= 1 << txq->index;
1000 static void txq_set_wrr(struct tx_queue *txq, int weight)
1002 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1007 * Turn off fixed priority mode.
1010 switch (mp->shared->tx_bw_control) {
1011 case TX_BW_CONTROL_OLD_LAYOUT:
1012 off = TXQ_FIX_PRIO_CONF(mp->port_num);
1014 case TX_BW_CONTROL_NEW_LAYOUT:
1015 off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num);
1021 val &= ~(1 << txq->index);
1025 * Configure WRR weight for this queue.
1027 off = TXQ_BW_WRR_CONF(mp->port_num, txq->index);
1030 val = (val & ~0xff) | (weight & 0xff);
1036 /* mii management interface *************************************************/
1037 static irqreturn_t mv643xx_eth_err_irq(int irq, void *dev_id)
1039 struct mv643xx_eth_shared_private *msp = dev_id;
1041 if (readl(msp->base + ERR_INT_CAUSE) & ERR_INT_SMI_DONE) {
1042 writel(~ERR_INT_SMI_DONE, msp->base + ERR_INT_CAUSE);
1043 wake_up(&msp->smi_busy_wait);
1050 static int smi_is_done(struct mv643xx_eth_shared_private *msp)
1052 return !(readl(msp->base + SMI_REG) & SMI_BUSY);
1055 static int smi_wait_ready(struct mv643xx_eth_shared_private *msp)
1057 if (msp->err_interrupt == NO_IRQ) {
1060 for (i = 0; !smi_is_done(msp); i++) {
1069 if (!smi_is_done(msp)) {
1070 wait_event_timeout(msp->smi_busy_wait, smi_is_done(msp),
1071 msecs_to_jiffies(100));
1072 if (!smi_is_done(msp))
1079 static int smi_bus_read(struct mii_bus *bus, int addr, int reg)
1081 struct mv643xx_eth_shared_private *msp = bus->priv;
1082 void __iomem *smi_reg = msp->base + SMI_REG;
1085 if (smi_wait_ready(msp)) {
1086 printk("mv643xx_eth: SMI bus busy timeout\n");
1090 writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg);
1092 if (smi_wait_ready(msp)) {
1093 printk("mv643xx_eth: SMI bus busy timeout\n");
1097 ret = readl(smi_reg);
1098 if (!(ret & SMI_READ_VALID)) {
1099 printk("mv643xx_eth: SMI bus read not valid\n");
1103 return ret & 0xffff;
1106 static int smi_bus_write(struct mii_bus *bus, int addr, int reg, u16 val)
1108 struct mv643xx_eth_shared_private *msp = bus->priv;
1109 void __iomem *smi_reg = msp->base + SMI_REG;
1111 if (smi_wait_ready(msp)) {
1112 printk("mv643xx_eth: SMI bus busy timeout\n");
1116 writel(SMI_OPCODE_WRITE | (reg << 21) |
1117 (addr << 16) | (val & 0xffff), smi_reg);
1119 if (smi_wait_ready(msp)) {
1120 printk("mv643xx_eth: SMI bus busy timeout\n");
1128 /* statistics ***************************************************************/
1129 static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *dev)
1131 struct mv643xx_eth_private *mp = netdev_priv(dev);
1132 struct net_device_stats *stats = &dev->stats;
1133 unsigned long tx_packets = 0;
1134 unsigned long tx_bytes = 0;
1135 unsigned long tx_dropped = 0;
1138 for (i = 0; i < mp->txq_count; i++) {
1139 struct tx_queue *txq = mp->txq + i;
1141 tx_packets += txq->tx_packets;
1142 tx_bytes += txq->tx_bytes;
1143 tx_dropped += txq->tx_dropped;
1146 stats->tx_packets = tx_packets;
1147 stats->tx_bytes = tx_bytes;
1148 stats->tx_dropped = tx_dropped;
1153 static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset)
1155 return rdl(mp, MIB_COUNTERS(mp->port_num) + offset);
1158 static void mib_counters_clear(struct mv643xx_eth_private *mp)
1162 for (i = 0; i < 0x80; i += 4)
1166 static void mib_counters_update(struct mv643xx_eth_private *mp)
1168 struct mib_counters *p = &mp->mib_counters;
1170 spin_lock(&mp->mib_counters_lock);
1171 p->good_octets_received += mib_read(mp, 0x00);
1172 p->good_octets_received += (u64)mib_read(mp, 0x04) << 32;
1173 p->bad_octets_received += mib_read(mp, 0x08);
1174 p->internal_mac_transmit_err += mib_read(mp, 0x0c);
1175 p->good_frames_received += mib_read(mp, 0x10);
1176 p->bad_frames_received += mib_read(mp, 0x14);
1177 p->broadcast_frames_received += mib_read(mp, 0x18);
1178 p->multicast_frames_received += mib_read(mp, 0x1c);
1179 p->frames_64_octets += mib_read(mp, 0x20);
1180 p->frames_65_to_127_octets += mib_read(mp, 0x24);
1181 p->frames_128_to_255_octets += mib_read(mp, 0x28);
1182 p->frames_256_to_511_octets += mib_read(mp, 0x2c);
1183 p->frames_512_to_1023_octets += mib_read(mp, 0x30);
1184 p->frames_1024_to_max_octets += mib_read(mp, 0x34);
1185 p->good_octets_sent += mib_read(mp, 0x38);
1186 p->good_octets_sent += (u64)mib_read(mp, 0x3c) << 32;
1187 p->good_frames_sent += mib_read(mp, 0x40);
1188 p->excessive_collision += mib_read(mp, 0x44);
1189 p->multicast_frames_sent += mib_read(mp, 0x48);
1190 p->broadcast_frames_sent += mib_read(mp, 0x4c);
1191 p->unrec_mac_control_received += mib_read(mp, 0x50);
1192 p->fc_sent += mib_read(mp, 0x54);
1193 p->good_fc_received += mib_read(mp, 0x58);
1194 p->bad_fc_received += mib_read(mp, 0x5c);
1195 p->undersize_received += mib_read(mp, 0x60);
1196 p->fragments_received += mib_read(mp, 0x64);
1197 p->oversize_received += mib_read(mp, 0x68);
1198 p->jabber_received += mib_read(mp, 0x6c);
1199 p->mac_receive_error += mib_read(mp, 0x70);
1200 p->bad_crc_event += mib_read(mp, 0x74);
1201 p->collision += mib_read(mp, 0x78);
1202 p->late_collision += mib_read(mp, 0x7c);
1203 spin_unlock(&mp->mib_counters_lock);
1205 mod_timer(&mp->mib_counters_timer, jiffies + 30 * HZ);
1208 static void mib_counters_timer_wrapper(unsigned long _mp)
1210 struct mv643xx_eth_private *mp = (void *)_mp;
1212 mib_counters_update(mp);
1216 /* ethtool ******************************************************************/
1217 struct mv643xx_eth_stats {
1218 char stat_string[ETH_GSTRING_LEN];
1225 { #m, FIELD_SIZEOF(struct net_device_stats, m), \
1226 offsetof(struct net_device, stats.m), -1 }
1228 #define MIBSTAT(m) \
1229 { #m, FIELD_SIZEOF(struct mib_counters, m), \
1230 -1, offsetof(struct mv643xx_eth_private, mib_counters.m) }
1232 static const struct mv643xx_eth_stats mv643xx_eth_stats[] = {
1241 MIBSTAT(good_octets_received),
1242 MIBSTAT(bad_octets_received),
1243 MIBSTAT(internal_mac_transmit_err),
1244 MIBSTAT(good_frames_received),
1245 MIBSTAT(bad_frames_received),
1246 MIBSTAT(broadcast_frames_received),
1247 MIBSTAT(multicast_frames_received),
1248 MIBSTAT(frames_64_octets),
1249 MIBSTAT(frames_65_to_127_octets),
1250 MIBSTAT(frames_128_to_255_octets),
1251 MIBSTAT(frames_256_to_511_octets),
1252 MIBSTAT(frames_512_to_1023_octets),
1253 MIBSTAT(frames_1024_to_max_octets),
1254 MIBSTAT(good_octets_sent),
1255 MIBSTAT(good_frames_sent),
1256 MIBSTAT(excessive_collision),
1257 MIBSTAT(multicast_frames_sent),
1258 MIBSTAT(broadcast_frames_sent),
1259 MIBSTAT(unrec_mac_control_received),
1261 MIBSTAT(good_fc_received),
1262 MIBSTAT(bad_fc_received),
1263 MIBSTAT(undersize_received),
1264 MIBSTAT(fragments_received),
1265 MIBSTAT(oversize_received),
1266 MIBSTAT(jabber_received),
1267 MIBSTAT(mac_receive_error),
1268 MIBSTAT(bad_crc_event),
1270 MIBSTAT(late_collision),
1273 static int mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1275 struct mv643xx_eth_private *mp = netdev_priv(dev);
1278 err = phy_read_status(mp->phy);
1280 err = phy_ethtool_gset(mp->phy, cmd);
1283 * The MAC does not support 1000baseT_Half.
1285 cmd->supported &= ~SUPPORTED_1000baseT_Half;
1286 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
1291 static int mv643xx_eth_get_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd)
1293 struct mv643xx_eth_private *mp = netdev_priv(dev);
1296 port_status = rdl(mp, PORT_STATUS(mp->port_num));
1298 cmd->supported = SUPPORTED_MII;
1299 cmd->advertising = ADVERTISED_MII;
1300 switch (port_status & PORT_SPEED_MASK) {
1302 cmd->speed = SPEED_10;
1304 case PORT_SPEED_100:
1305 cmd->speed = SPEED_100;
1307 case PORT_SPEED_1000:
1308 cmd->speed = SPEED_1000;
1314 cmd->duplex = (port_status & FULL_DUPLEX) ? DUPLEX_FULL : DUPLEX_HALF;
1315 cmd->port = PORT_MII;
1316 cmd->phy_address = 0;
1317 cmd->transceiver = XCVR_INTERNAL;
1318 cmd->autoneg = AUTONEG_DISABLE;
1325 static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1327 struct mv643xx_eth_private *mp = netdev_priv(dev);
1330 * The MAC does not support 1000baseT_Half.
1332 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
1334 return phy_ethtool_sset(mp->phy, cmd);
1337 static int mv643xx_eth_set_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd)
1342 static void mv643xx_eth_get_drvinfo(struct net_device *dev,
1343 struct ethtool_drvinfo *drvinfo)
1345 strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32);
1346 strncpy(drvinfo->version, mv643xx_eth_driver_version, 32);
1347 strncpy(drvinfo->fw_version, "N/A", 32);
1348 strncpy(drvinfo->bus_info, "platform", 32);
1349 drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats);
1352 static int mv643xx_eth_nway_reset(struct net_device *dev)
1354 struct mv643xx_eth_private *mp = netdev_priv(dev);
1356 return genphy_restart_aneg(mp->phy);
1359 static int mv643xx_eth_nway_reset_phyless(struct net_device *dev)
1364 static u32 mv643xx_eth_get_link(struct net_device *dev)
1366 return !!netif_carrier_ok(dev);
1369 static void mv643xx_eth_get_strings(struct net_device *dev,
1370 uint32_t stringset, uint8_t *data)
1374 if (stringset == ETH_SS_STATS) {
1375 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
1376 memcpy(data + i * ETH_GSTRING_LEN,
1377 mv643xx_eth_stats[i].stat_string,
1383 static void mv643xx_eth_get_ethtool_stats(struct net_device *dev,
1384 struct ethtool_stats *stats,
1387 struct mv643xx_eth_private *mp = netdev_priv(dev);
1390 mv643xx_eth_get_stats(dev);
1391 mib_counters_update(mp);
1393 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
1394 const struct mv643xx_eth_stats *stat;
1397 stat = mv643xx_eth_stats + i;
1399 if (stat->netdev_off >= 0)
1400 p = ((void *)mp->dev) + stat->netdev_off;
1402 p = ((void *)mp) + stat->mp_off;
1404 data[i] = (stat->sizeof_stat == 8) ?
1405 *(uint64_t *)p : *(uint32_t *)p;
1409 static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset)
1411 if (sset == ETH_SS_STATS)
1412 return ARRAY_SIZE(mv643xx_eth_stats);
1417 static const struct ethtool_ops mv643xx_eth_ethtool_ops = {
1418 .get_settings = mv643xx_eth_get_settings,
1419 .set_settings = mv643xx_eth_set_settings,
1420 .get_drvinfo = mv643xx_eth_get_drvinfo,
1421 .nway_reset = mv643xx_eth_nway_reset,
1422 .get_link = mv643xx_eth_get_link,
1423 .set_sg = ethtool_op_set_sg,
1424 .get_strings = mv643xx_eth_get_strings,
1425 .get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
1426 .get_sset_count = mv643xx_eth_get_sset_count,
1429 static const struct ethtool_ops mv643xx_eth_ethtool_ops_phyless = {
1430 .get_settings = mv643xx_eth_get_settings_phyless,
1431 .set_settings = mv643xx_eth_set_settings_phyless,
1432 .get_drvinfo = mv643xx_eth_get_drvinfo,
1433 .nway_reset = mv643xx_eth_nway_reset_phyless,
1434 .get_link = mv643xx_eth_get_link,
1435 .set_sg = ethtool_op_set_sg,
1436 .get_strings = mv643xx_eth_get_strings,
1437 .get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
1438 .get_sset_count = mv643xx_eth_get_sset_count,
1442 /* address handling *********************************************************/
1443 static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr)
1448 mac_h = rdl(mp, MAC_ADDR_HIGH(mp->port_num));
1449 mac_l = rdl(mp, MAC_ADDR_LOW(mp->port_num));
1451 addr[0] = (mac_h >> 24) & 0xff;
1452 addr[1] = (mac_h >> 16) & 0xff;
1453 addr[2] = (mac_h >> 8) & 0xff;
1454 addr[3] = mac_h & 0xff;
1455 addr[4] = (mac_l >> 8) & 0xff;
1456 addr[5] = mac_l & 0xff;
1459 static void init_mac_tables(struct mv643xx_eth_private *mp)
1463 for (i = 0; i < 0x100; i += 4) {
1464 wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0);
1465 wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0);
1468 for (i = 0; i < 0x10; i += 4)
1469 wrl(mp, UNICAST_TABLE(mp->port_num) + i, 0);
1472 static void set_filter_table_entry(struct mv643xx_eth_private *mp,
1473 int table, unsigned char entry)
1475 unsigned int table_reg;
1477 /* Set "accepts frame bit" at specified table entry */
1478 table_reg = rdl(mp, table + (entry & 0xfc));
1479 table_reg |= 0x01 << (8 * (entry & 3));
1480 wrl(mp, table + (entry & 0xfc), table_reg);
1483 static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr)
1489 mac_l = (addr[4] << 8) | addr[5];
1490 mac_h = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3];
1492 wrl(mp, MAC_ADDR_LOW(mp->port_num), mac_l);
1493 wrl(mp, MAC_ADDR_HIGH(mp->port_num), mac_h);
1495 table = UNICAST_TABLE(mp->port_num);
1496 set_filter_table_entry(mp, table, addr[5] & 0x0f);
1499 static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
1501 struct mv643xx_eth_private *mp = netdev_priv(dev);
1503 /* +2 is for the offset of the HW addr type */
1504 memcpy(dev->dev_addr, addr + 2, 6);
1506 init_mac_tables(mp);
1507 uc_addr_set(mp, dev->dev_addr);
1512 static int addr_crc(unsigned char *addr)
1517 for (i = 0; i < 6; i++) {
1520 crc = (crc ^ addr[i]) << 8;
1521 for (j = 7; j >= 0; j--) {
1522 if (crc & (0x100 << j))
1530 static void mv643xx_eth_set_rx_mode(struct net_device *dev)
1532 struct mv643xx_eth_private *mp = netdev_priv(dev);
1534 struct dev_addr_list *addr;
1537 port_config = rdl(mp, PORT_CONFIG(mp->port_num));
1538 if (dev->flags & IFF_PROMISC)
1539 port_config |= UNICAST_PROMISCUOUS_MODE;
1541 port_config &= ~UNICAST_PROMISCUOUS_MODE;
1542 wrl(mp, PORT_CONFIG(mp->port_num), port_config);
1544 if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) {
1545 int port_num = mp->port_num;
1546 u32 accept = 0x01010101;
1548 for (i = 0; i < 0x100; i += 4) {
1549 wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept);
1550 wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept);
1555 for (i = 0; i < 0x100; i += 4) {
1556 wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0);
1557 wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0);
1560 for (addr = dev->mc_list; addr != NULL; addr = addr->next) {
1561 u8 *a = addr->da_addr;
1564 if (addr->da_addrlen != 6)
1567 if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) {
1568 table = SPECIAL_MCAST_TABLE(mp->port_num);
1569 set_filter_table_entry(mp, table, a[5]);
1571 int crc = addr_crc(a);
1573 table = OTHER_MCAST_TABLE(mp->port_num);
1574 set_filter_table_entry(mp, table, crc);
1580 /* rx/tx queue initialisation ***********************************************/
1581 static int rxq_init(struct mv643xx_eth_private *mp, int index)
1583 struct rx_queue *rxq = mp->rxq + index;
1584 struct rx_desc *rx_desc;
1590 rxq->rx_ring_size = mp->default_rx_ring_size;
1592 rxq->rx_desc_count = 0;
1593 rxq->rx_curr_desc = 0;
1594 rxq->rx_used_desc = 0;
1596 size = rxq->rx_ring_size * sizeof(struct rx_desc);
1598 if (index == 0 && size <= mp->rx_desc_sram_size) {
1599 rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr,
1600 mp->rx_desc_sram_size);
1601 rxq->rx_desc_dma = mp->rx_desc_sram_addr;
1603 rxq->rx_desc_area = dma_alloc_coherent(NULL, size,
1608 if (rxq->rx_desc_area == NULL) {
1609 dev_printk(KERN_ERR, &mp->dev->dev,
1610 "can't allocate rx ring (%d bytes)\n", size);
1613 memset(rxq->rx_desc_area, 0, size);
1615 rxq->rx_desc_area_size = size;
1616 rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb),
1618 if (rxq->rx_skb == NULL) {
1619 dev_printk(KERN_ERR, &mp->dev->dev,
1620 "can't allocate rx skb ring\n");
1624 rx_desc = (struct rx_desc *)rxq->rx_desc_area;
1625 for (i = 0; i < rxq->rx_ring_size; i++) {
1629 if (nexti == rxq->rx_ring_size)
1632 rx_desc[i].next_desc_ptr = rxq->rx_desc_dma +
1633 nexti * sizeof(struct rx_desc);
1640 if (index == 0 && size <= mp->rx_desc_sram_size)
1641 iounmap(rxq->rx_desc_area);
1643 dma_free_coherent(NULL, size,
1651 static void rxq_deinit(struct rx_queue *rxq)
1653 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
1658 for (i = 0; i < rxq->rx_ring_size; i++) {
1659 if (rxq->rx_skb[i]) {
1660 dev_kfree_skb(rxq->rx_skb[i]);
1661 rxq->rx_desc_count--;
1665 if (rxq->rx_desc_count) {
1666 dev_printk(KERN_ERR, &mp->dev->dev,
1667 "error freeing rx ring -- %d skbs stuck\n",
1668 rxq->rx_desc_count);
1671 if (rxq->index == 0 &&
1672 rxq->rx_desc_area_size <= mp->rx_desc_sram_size)
1673 iounmap(rxq->rx_desc_area);
1675 dma_free_coherent(NULL, rxq->rx_desc_area_size,
1676 rxq->rx_desc_area, rxq->rx_desc_dma);
1681 static int txq_init(struct mv643xx_eth_private *mp, int index)
1683 struct tx_queue *txq = mp->txq + index;
1684 struct tx_desc *tx_desc;
1690 txq->tx_ring_size = mp->default_tx_ring_size;
1692 txq->tx_desc_count = 0;
1693 txq->tx_curr_desc = 0;
1694 txq->tx_used_desc = 0;
1696 size = txq->tx_ring_size * sizeof(struct tx_desc);
1698 if (index == 0 && size <= mp->tx_desc_sram_size) {
1699 txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr,
1700 mp->tx_desc_sram_size);
1701 txq->tx_desc_dma = mp->tx_desc_sram_addr;
1703 txq->tx_desc_area = dma_alloc_coherent(NULL, size,
1708 if (txq->tx_desc_area == NULL) {
1709 dev_printk(KERN_ERR, &mp->dev->dev,
1710 "can't allocate tx ring (%d bytes)\n", size);
1713 memset(txq->tx_desc_area, 0, size);
1715 txq->tx_desc_area_size = size;
1717 tx_desc = (struct tx_desc *)txq->tx_desc_area;
1718 for (i = 0; i < txq->tx_ring_size; i++) {
1719 struct tx_desc *txd = tx_desc + i;
1723 if (nexti == txq->tx_ring_size)
1727 txd->next_desc_ptr = txq->tx_desc_dma +
1728 nexti * sizeof(struct tx_desc);
1731 skb_queue_head_init(&txq->tx_skb);
1736 static void txq_deinit(struct tx_queue *txq)
1738 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1741 txq_reclaim(txq, txq->tx_ring_size, 1);
1743 BUG_ON(txq->tx_used_desc != txq->tx_curr_desc);
1745 if (txq->index == 0 &&
1746 txq->tx_desc_area_size <= mp->tx_desc_sram_size)
1747 iounmap(txq->tx_desc_area);
1749 dma_free_coherent(NULL, txq->tx_desc_area_size,
1750 txq->tx_desc_area, txq->tx_desc_dma);
1754 /* netdev ops and related ***************************************************/
1755 static int mv643xx_eth_collect_events(struct mv643xx_eth_private *mp)
1760 int_cause = rdl(mp, INT_CAUSE(mp->port_num)) &
1761 (INT_TX_END | INT_RX | INT_EXT);
1766 if (int_cause & INT_EXT)
1767 int_cause_ext = rdl(mp, INT_CAUSE_EXT(mp->port_num));
1769 int_cause &= INT_TX_END | INT_RX;
1771 wrl(mp, INT_CAUSE(mp->port_num), ~int_cause);
1772 mp->work_tx_end |= ((int_cause & INT_TX_END) >> 19) &
1773 ~(rdl(mp, TXQ_COMMAND(mp->port_num)) & 0xff);
1774 mp->work_rx |= (int_cause & INT_RX) >> 2;
1777 int_cause_ext &= INT_EXT_LINK_PHY | INT_EXT_TX;
1778 if (int_cause_ext) {
1779 wrl(mp, INT_CAUSE_EXT(mp->port_num), ~int_cause_ext);
1780 if (int_cause_ext & INT_EXT_LINK_PHY)
1782 mp->work_tx |= int_cause_ext & INT_EXT_TX;
1788 static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id)
1790 struct net_device *dev = (struct net_device *)dev_id;
1791 struct mv643xx_eth_private *mp = netdev_priv(dev);
1793 if (unlikely(!mv643xx_eth_collect_events(mp)))
1796 wrl(mp, INT_MASK(mp->port_num), 0);
1797 napi_schedule(&mp->napi);
1802 static void handle_link_event(struct mv643xx_eth_private *mp)
1804 struct net_device *dev = mp->dev;
1810 port_status = rdl(mp, PORT_STATUS(mp->port_num));
1811 if (!(port_status & LINK_UP)) {
1812 if (netif_carrier_ok(dev)) {
1815 printk(KERN_INFO "%s: link down\n", dev->name);
1817 netif_carrier_off(dev);
1819 for (i = 0; i < mp->txq_count; i++) {
1820 struct tx_queue *txq = mp->txq + i;
1822 txq_reclaim(txq, txq->tx_ring_size, 1);
1823 txq_reset_hw_ptr(txq);
1829 switch (port_status & PORT_SPEED_MASK) {
1833 case PORT_SPEED_100:
1836 case PORT_SPEED_1000:
1843 duplex = (port_status & FULL_DUPLEX) ? 1 : 0;
1844 fc = (port_status & FLOW_CONTROL_ENABLED) ? 1 : 0;
1846 printk(KERN_INFO "%s: link up, %d Mb/s, %s duplex, "
1847 "flow control %sabled\n", dev->name,
1848 speed, duplex ? "full" : "half",
1851 if (!netif_carrier_ok(dev))
1852 netif_carrier_on(dev);
1855 static int mv643xx_eth_poll(struct napi_struct *napi, int budget)
1857 struct mv643xx_eth_private *mp;
1860 mp = container_of(napi, struct mv643xx_eth_private, napi);
1862 mp->work_rx_refill |= mp->work_rx_oom;
1863 mp->work_rx_oom = 0;
1866 while (work_done < budget) {
1871 if (mp->work_link) {
1873 handle_link_event(mp);
1877 queue_mask = mp->work_tx | mp->work_tx_end |
1878 mp->work_rx | mp->work_rx_refill;
1880 if (mv643xx_eth_collect_events(mp))
1885 queue = fls(queue_mask) - 1;
1886 queue_mask = 1 << queue;
1888 work_tbd = budget - work_done;
1892 if (mp->work_tx_end & queue_mask) {
1893 txq_kick(mp->txq + queue);
1894 } else if (mp->work_tx & queue_mask) {
1895 work_done += txq_reclaim(mp->txq + queue, work_tbd, 0);
1896 txq_maybe_wake(mp->txq + queue);
1897 } else if (mp->work_rx & queue_mask) {
1898 work_done += rxq_process(mp->rxq + queue, work_tbd);
1899 } else if (mp->work_rx_refill & queue_mask) {
1900 work_done += rxq_refill(mp->rxq + queue, work_tbd);
1906 if (work_done < budget) {
1907 if (mp->work_rx_oom)
1908 mod_timer(&mp->rx_oom, jiffies + (HZ / 10));
1909 napi_complete(napi);
1910 wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
1916 static inline void oom_timer_wrapper(unsigned long data)
1918 struct mv643xx_eth_private *mp = (void *)data;
1920 napi_schedule(&mp->napi);
1923 static void phy_reset(struct mv643xx_eth_private *mp)
1927 data = phy_read(mp->phy, MII_BMCR);
1932 if (phy_write(mp->phy, MII_BMCR, data) < 0)
1936 data = phy_read(mp->phy, MII_BMCR);
1937 } while (data >= 0 && data & BMCR_RESET);
1940 static void port_start(struct mv643xx_eth_private *mp)
1946 * Perform PHY reset, if there is a PHY.
1948 if (mp->phy != NULL) {
1949 struct ethtool_cmd cmd;
1951 mv643xx_eth_get_settings(mp->dev, &cmd);
1953 mv643xx_eth_set_settings(mp->dev, &cmd);
1957 * Configure basic link parameters.
1959 pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
1961 pscr |= SERIAL_PORT_ENABLE;
1962 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
1964 pscr |= DO_NOT_FORCE_LINK_FAIL;
1965 if (mp->phy == NULL)
1966 pscr |= FORCE_LINK_PASS;
1967 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
1969 wrl(mp, SDMA_CONFIG(mp->port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE);
1972 * Configure TX path and queues.
1974 tx_set_rate(mp, 1000000000, 16777216);
1975 for (i = 0; i < mp->txq_count; i++) {
1976 struct tx_queue *txq = mp->txq + i;
1978 txq_reset_hw_ptr(txq);
1979 txq_set_rate(txq, 1000000000, 16777216);
1980 txq_set_fixed_prio_mode(txq);
1984 * Add configured unicast address to address filter table.
1986 uc_addr_set(mp, mp->dev->dev_addr);
1989 * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast
1990 * frames to RX queue #0, and include the pseudo-header when
1991 * calculating receive checksums.
1993 wrl(mp, PORT_CONFIG(mp->port_num), 0x02000000);
1996 * Treat BPDUs as normal multicasts, and disable partition mode.
1998 wrl(mp, PORT_CONFIG_EXT(mp->port_num), 0x00000000);
2001 * Enable the receive queues.
2003 for (i = 0; i < mp->rxq_count; i++) {
2004 struct rx_queue *rxq = mp->rxq + i;
2005 int off = RXQ_CURRENT_DESC_PTR(mp->port_num, i);
2008 addr = (u32)rxq->rx_desc_dma;
2009 addr += rxq->rx_curr_desc * sizeof(struct rx_desc);
2016 static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int delay)
2018 unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
2021 val = rdl(mp, SDMA_CONFIG(mp->port_num));
2022 if (mp->shared->extended_rx_coal_limit) {
2026 val |= (coal & 0x8000) << 10;
2027 val |= (coal & 0x7fff) << 7;
2032 val |= (coal & 0x3fff) << 8;
2034 wrl(mp, SDMA_CONFIG(mp->port_num), val);
2037 static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int delay)
2039 unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
2043 wrl(mp, TX_FIFO_URGENT_THRESHOLD(mp->port_num), (coal & 0x3fff) << 4);
2046 static void mv643xx_eth_recalc_skb_size(struct mv643xx_eth_private *mp)
2051 * Reserve 2+14 bytes for an ethernet header (the hardware
2052 * automatically prepends 2 bytes of dummy data to each
2053 * received packet), 16 bytes for up to four VLAN tags, and
2054 * 4 bytes for the trailing FCS -- 36 bytes total.
2056 skb_size = mp->dev->mtu + 36;
2059 * Make sure that the skb size is a multiple of 8 bytes, as
2060 * the lower three bits of the receive descriptor's buffer
2061 * size field are ignored by the hardware.
2063 mp->skb_size = (skb_size + 7) & ~7;
2066 static int mv643xx_eth_open(struct net_device *dev)
2068 struct mv643xx_eth_private *mp = netdev_priv(dev);
2072 wrl(mp, INT_CAUSE(mp->port_num), 0);
2073 wrl(mp, INT_CAUSE_EXT(mp->port_num), 0);
2074 rdl(mp, INT_CAUSE_EXT(mp->port_num));
2076 err = request_irq(dev->irq, mv643xx_eth_irq,
2077 IRQF_SHARED, dev->name, dev);
2079 dev_printk(KERN_ERR, &dev->dev, "can't assign irq\n");
2083 init_mac_tables(mp);
2085 mv643xx_eth_recalc_skb_size(mp);
2087 napi_enable(&mp->napi);
2089 skb_queue_head_init(&mp->rx_recycle);
2091 for (i = 0; i < mp->rxq_count; i++) {
2092 err = rxq_init(mp, i);
2095 rxq_deinit(mp->rxq + i);
2099 rxq_refill(mp->rxq + i, INT_MAX);
2102 if (mp->work_rx_oom) {
2103 mp->rx_oom.expires = jiffies + (HZ / 10);
2104 add_timer(&mp->rx_oom);
2107 for (i = 0; i < mp->txq_count; i++) {
2108 err = txq_init(mp, i);
2111 txq_deinit(mp->txq + i);
2116 netif_carrier_off(dev);
2123 wrl(mp, INT_MASK_EXT(mp->port_num), INT_EXT_LINK_PHY | INT_EXT_TX);
2124 wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
2130 for (i = 0; i < mp->rxq_count; i++)
2131 rxq_deinit(mp->rxq + i);
2133 free_irq(dev->irq, dev);
2138 static void port_reset(struct mv643xx_eth_private *mp)
2143 for (i = 0; i < mp->rxq_count; i++)
2144 rxq_disable(mp->rxq + i);
2145 for (i = 0; i < mp->txq_count; i++)
2146 txq_disable(mp->txq + i);
2149 u32 ps = rdl(mp, PORT_STATUS(mp->port_num));
2151 if ((ps & (TX_IN_PROGRESS | TX_FIFO_EMPTY)) == TX_FIFO_EMPTY)
2156 /* Reset the Enable bit in the Configuration Register */
2157 data = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
2158 data &= ~(SERIAL_PORT_ENABLE |
2159 DO_NOT_FORCE_LINK_FAIL |
2161 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), data);
2164 static int mv643xx_eth_stop(struct net_device *dev)
2166 struct mv643xx_eth_private *mp = netdev_priv(dev);
2169 wrl(mp, INT_MASK(mp->port_num), 0x00000000);
2170 rdl(mp, INT_MASK(mp->port_num));
2172 del_timer_sync(&mp->mib_counters_timer);
2174 napi_disable(&mp->napi);
2176 del_timer_sync(&mp->rx_oom);
2178 netif_carrier_off(dev);
2180 free_irq(dev->irq, dev);
2183 mv643xx_eth_get_stats(dev);
2184 mib_counters_update(mp);
2186 skb_queue_purge(&mp->rx_recycle);
2188 for (i = 0; i < mp->rxq_count; i++)
2189 rxq_deinit(mp->rxq + i);
2190 for (i = 0; i < mp->txq_count; i++)
2191 txq_deinit(mp->txq + i);
2196 static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2198 struct mv643xx_eth_private *mp = netdev_priv(dev);
2200 if (mp->phy != NULL)
2201 return phy_mii_ioctl(mp->phy, if_mii(ifr), cmd);
2206 static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
2208 struct mv643xx_eth_private *mp = netdev_priv(dev);
2210 if (new_mtu < 64 || new_mtu > 9500)
2214 mv643xx_eth_recalc_skb_size(mp);
2215 tx_set_rate(mp, 1000000000, 16777216);
2217 if (!netif_running(dev))
2221 * Stop and then re-open the interface. This will allocate RX
2222 * skbs of the new MTU.
2223 * There is a possible danger that the open will not succeed,
2224 * due to memory being full.
2226 mv643xx_eth_stop(dev);
2227 if (mv643xx_eth_open(dev)) {
2228 dev_printk(KERN_ERR, &dev->dev,
2229 "fatal error on re-opening device after "
2236 static void tx_timeout_task(struct work_struct *ugly)
2238 struct mv643xx_eth_private *mp;
2240 mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task);
2241 if (netif_running(mp->dev)) {
2242 netif_tx_stop_all_queues(mp->dev);
2245 netif_tx_wake_all_queues(mp->dev);
2249 static void mv643xx_eth_tx_timeout(struct net_device *dev)
2251 struct mv643xx_eth_private *mp = netdev_priv(dev);
2253 dev_printk(KERN_INFO, &dev->dev, "tx timeout\n");
2255 schedule_work(&mp->tx_timeout_task);
2258 #ifdef CONFIG_NET_POLL_CONTROLLER
2259 static void mv643xx_eth_netpoll(struct net_device *dev)
2261 struct mv643xx_eth_private *mp = netdev_priv(dev);
2263 wrl(mp, INT_MASK(mp->port_num), 0x00000000);
2264 rdl(mp, INT_MASK(mp->port_num));
2266 mv643xx_eth_irq(dev->irq, dev);
2268 wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
2273 /* platform glue ************************************************************/
2275 mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp,
2276 struct mbus_dram_target_info *dram)
2278 void __iomem *base = msp->base;
2283 for (i = 0; i < 6; i++) {
2284 writel(0, base + WINDOW_BASE(i));
2285 writel(0, base + WINDOW_SIZE(i));
2287 writel(0, base + WINDOW_REMAP_HIGH(i));
2293 for (i = 0; i < dram->num_cs; i++) {
2294 struct mbus_dram_window *cs = dram->cs + i;
2296 writel((cs->base & 0xffff0000) |
2297 (cs->mbus_attr << 8) |
2298 dram->mbus_dram_target_id, base + WINDOW_BASE(i));
2299 writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i));
2301 win_enable &= ~(1 << i);
2302 win_protect |= 3 << (2 * i);
2305 writel(win_enable, base + WINDOW_BAR_ENABLE);
2306 msp->win_protect = win_protect;
2309 static void infer_hw_params(struct mv643xx_eth_shared_private *msp)
2312 * Check whether we have a 14-bit coal limit field in bits
2313 * [21:8], or a 16-bit coal limit in bits [25,21:7] of the
2314 * SDMA config register.
2316 writel(0x02000000, msp->base + SDMA_CONFIG(0));
2317 if (readl(msp->base + SDMA_CONFIG(0)) & 0x02000000)
2318 msp->extended_rx_coal_limit = 1;
2320 msp->extended_rx_coal_limit = 0;
2323 * Check whether the MAC supports TX rate control, and if
2324 * yes, whether its associated registers are in the old or
2327 writel(1, msp->base + TX_BW_MTU_MOVED(0));
2328 if (readl(msp->base + TX_BW_MTU_MOVED(0)) & 1) {
2329 msp->tx_bw_control = TX_BW_CONTROL_NEW_LAYOUT;
2331 writel(7, msp->base + TX_BW_RATE(0));
2332 if (readl(msp->base + TX_BW_RATE(0)) & 7)
2333 msp->tx_bw_control = TX_BW_CONTROL_OLD_LAYOUT;
2335 msp->tx_bw_control = TX_BW_CONTROL_ABSENT;
2339 static int mv643xx_eth_shared_probe(struct platform_device *pdev)
2341 static int mv643xx_eth_version_printed = 0;
2342 struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
2343 struct mv643xx_eth_shared_private *msp;
2344 struct resource *res;
2347 if (!mv643xx_eth_version_printed++)
2348 printk(KERN_NOTICE "MV-643xx 10/100/1000 ethernet "
2349 "driver version %s\n", mv643xx_eth_driver_version);
2352 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2357 msp = kmalloc(sizeof(*msp), GFP_KERNEL);
2360 memset(msp, 0, sizeof(*msp));
2362 msp->base = ioremap(res->start, res->end - res->start + 1);
2363 if (msp->base == NULL)
2367 * Set up and register SMI bus.
2369 if (pd == NULL || pd->shared_smi == NULL) {
2370 msp->smi_bus = mdiobus_alloc();
2371 if (msp->smi_bus == NULL)
2374 msp->smi_bus->priv = msp;
2375 msp->smi_bus->name = "mv643xx_eth smi";
2376 msp->smi_bus->read = smi_bus_read;
2377 msp->smi_bus->write = smi_bus_write,
2378 snprintf(msp->smi_bus->id, MII_BUS_ID_SIZE, "%d", pdev->id);
2379 msp->smi_bus->parent = &pdev->dev;
2380 msp->smi_bus->phy_mask = 0xffffffff;
2381 if (mdiobus_register(msp->smi_bus) < 0)
2382 goto out_free_mii_bus;
2385 msp->smi = platform_get_drvdata(pd->shared_smi);
2388 msp->err_interrupt = NO_IRQ;
2389 init_waitqueue_head(&msp->smi_busy_wait);
2392 * Check whether the error interrupt is hooked up.
2394 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2398 err = request_irq(res->start, mv643xx_eth_err_irq,
2399 IRQF_SHARED, "mv643xx_eth", msp);
2401 writel(ERR_INT_SMI_DONE, msp->base + ERR_INT_MASK);
2402 msp->err_interrupt = res->start;
2407 * (Re-)program MBUS remapping windows if we are asked to.
2409 if (pd != NULL && pd->dram != NULL)
2410 mv643xx_eth_conf_mbus_windows(msp, pd->dram);
2413 * Detect hardware parameters.
2415 msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
2416 infer_hw_params(msp);
2418 platform_set_drvdata(pdev, msp);
2423 mdiobus_free(msp->smi_bus);
2432 static int mv643xx_eth_shared_remove(struct platform_device *pdev)
2434 struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev);
2435 struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
2437 if (pd == NULL || pd->shared_smi == NULL) {
2438 mdiobus_free(msp->smi_bus);
2439 mdiobus_unregister(msp->smi_bus);
2441 if (msp->err_interrupt != NO_IRQ)
2442 free_irq(msp->err_interrupt, msp);
2449 static struct platform_driver mv643xx_eth_shared_driver = {
2450 .probe = mv643xx_eth_shared_probe,
2451 .remove = mv643xx_eth_shared_remove,
2453 .name = MV643XX_ETH_SHARED_NAME,
2454 .owner = THIS_MODULE,
2458 static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr)
2460 int addr_shift = 5 * mp->port_num;
2463 data = rdl(mp, PHY_ADDR);
2464 data &= ~(0x1f << addr_shift);
2465 data |= (phy_addr & 0x1f) << addr_shift;
2466 wrl(mp, PHY_ADDR, data);
2469 static int phy_addr_get(struct mv643xx_eth_private *mp)
2473 data = rdl(mp, PHY_ADDR);
2475 return (data >> (5 * mp->port_num)) & 0x1f;
2478 static void set_params(struct mv643xx_eth_private *mp,
2479 struct mv643xx_eth_platform_data *pd)
2481 struct net_device *dev = mp->dev;
2483 if (is_valid_ether_addr(pd->mac_addr))
2484 memcpy(dev->dev_addr, pd->mac_addr, 6);
2486 uc_addr_get(mp, dev->dev_addr);
2488 mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE;
2489 if (pd->rx_queue_size)
2490 mp->default_rx_ring_size = pd->rx_queue_size;
2491 mp->rx_desc_sram_addr = pd->rx_sram_addr;
2492 mp->rx_desc_sram_size = pd->rx_sram_size;
2494 mp->rxq_count = pd->rx_queue_count ? : 1;
2496 mp->default_tx_ring_size = DEFAULT_TX_QUEUE_SIZE;
2497 if (pd->tx_queue_size)
2498 mp->default_tx_ring_size = pd->tx_queue_size;
2499 mp->tx_desc_sram_addr = pd->tx_sram_addr;
2500 mp->tx_desc_sram_size = pd->tx_sram_size;
2502 mp->txq_count = pd->tx_queue_count ? : 1;
2505 static struct phy_device *phy_scan(struct mv643xx_eth_private *mp,
2508 struct mii_bus *bus = mp->shared->smi->smi_bus;
2509 struct phy_device *phydev;
2514 if (phy_addr == MV643XX_ETH_PHY_ADDR_DEFAULT) {
2515 start = phy_addr_get(mp) & 0x1f;
2518 start = phy_addr & 0x1f;
2523 for (i = 0; i < num; i++) {
2524 int addr = (start + i) & 0x1f;
2526 if (bus->phy_map[addr] == NULL)
2527 mdiobus_scan(bus, addr);
2529 if (phydev == NULL) {
2530 phydev = bus->phy_map[addr];
2532 phy_addr_set(mp, addr);
2539 static void phy_init(struct mv643xx_eth_private *mp, int speed, int duplex)
2541 struct phy_device *phy = mp->phy;
2545 phy_attach(mp->dev, phy->dev.bus_id, 0, PHY_INTERFACE_MODE_GMII);
2548 phy->autoneg = AUTONEG_ENABLE;
2551 phy->advertising = phy->supported | ADVERTISED_Autoneg;
2553 phy->autoneg = AUTONEG_DISABLE;
2554 phy->advertising = 0;
2556 phy->duplex = duplex;
2558 phy_start_aneg(phy);
2561 static void init_pscr(struct mv643xx_eth_private *mp, int speed, int duplex)
2565 pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
2566 if (pscr & SERIAL_PORT_ENABLE) {
2567 pscr &= ~SERIAL_PORT_ENABLE;
2568 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
2571 pscr = MAX_RX_PACKET_9700BYTE | SERIAL_PORT_CONTROL_RESERVED;
2572 if (mp->phy == NULL) {
2573 pscr |= DISABLE_AUTO_NEG_SPEED_GMII;
2574 if (speed == SPEED_1000)
2575 pscr |= SET_GMII_SPEED_TO_1000;
2576 else if (speed == SPEED_100)
2577 pscr |= SET_MII_SPEED_TO_100;
2579 pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL;
2581 pscr |= DISABLE_AUTO_NEG_FOR_DUPLEX;
2582 if (duplex == DUPLEX_FULL)
2583 pscr |= SET_FULL_DUPLEX_MODE;
2586 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
2589 static int mv643xx_eth_probe(struct platform_device *pdev)
2591 struct mv643xx_eth_platform_data *pd;
2592 struct mv643xx_eth_private *mp;
2593 struct net_device *dev;
2594 struct resource *res;
2595 DECLARE_MAC_BUF(mac);
2598 pd = pdev->dev.platform_data;
2600 dev_printk(KERN_ERR, &pdev->dev,
2601 "no mv643xx_eth_platform_data\n");
2605 if (pd->shared == NULL) {
2606 dev_printk(KERN_ERR, &pdev->dev,
2607 "no mv643xx_eth_platform_data->shared\n");
2611 dev = alloc_etherdev_mq(sizeof(struct mv643xx_eth_private), 8);
2615 mp = netdev_priv(dev);
2616 platform_set_drvdata(pdev, mp);
2618 mp->shared = platform_get_drvdata(pd->shared);
2619 mp->port_num = pd->port_number;
2624 dev->real_num_tx_queues = mp->txq_count;
2626 if (pd->phy_addr != MV643XX_ETH_PHY_NONE)
2627 mp->phy = phy_scan(mp, pd->phy_addr);
2629 if (mp->phy != NULL) {
2630 phy_init(mp, pd->speed, pd->duplex);
2631 SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops);
2633 SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops_phyless);
2636 init_pscr(mp, pd->speed, pd->duplex);
2639 mib_counters_clear(mp);
2641 init_timer(&mp->mib_counters_timer);
2642 mp->mib_counters_timer.data = (unsigned long)mp;
2643 mp->mib_counters_timer.function = mib_counters_timer_wrapper;
2644 mp->mib_counters_timer.expires = jiffies + 30 * HZ;
2645 add_timer(&mp->mib_counters_timer);
2647 spin_lock_init(&mp->mib_counters_lock);
2649 INIT_WORK(&mp->tx_timeout_task, tx_timeout_task);
2651 netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 128);
2653 init_timer(&mp->rx_oom);
2654 mp->rx_oom.data = (unsigned long)mp;
2655 mp->rx_oom.function = oom_timer_wrapper;
2658 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2660 dev->irq = res->start;
2662 dev->get_stats = mv643xx_eth_get_stats;
2663 dev->hard_start_xmit = mv643xx_eth_xmit;
2664 dev->open = mv643xx_eth_open;
2665 dev->stop = mv643xx_eth_stop;
2666 dev->set_multicast_list = mv643xx_eth_set_rx_mode;
2667 dev->set_mac_address = mv643xx_eth_set_mac_address;
2668 dev->do_ioctl = mv643xx_eth_ioctl;
2669 dev->change_mtu = mv643xx_eth_change_mtu;
2670 dev->tx_timeout = mv643xx_eth_tx_timeout;
2671 #ifdef CONFIG_NET_POLL_CONTROLLER
2672 dev->poll_controller = mv643xx_eth_netpoll;
2674 dev->watchdog_timeo = 2 * HZ;
2677 dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
2678 dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM;
2680 SET_NETDEV_DEV(dev, &pdev->dev);
2682 if (mp->shared->win_protect)
2683 wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect);
2685 err = register_netdev(dev);
2689 dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %s\n",
2690 mp->port_num, print_mac(mac, dev->dev_addr));
2692 if (mp->tx_desc_sram_size > 0)
2693 dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n");
2703 static int mv643xx_eth_remove(struct platform_device *pdev)
2705 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
2707 unregister_netdev(mp->dev);
2708 if (mp->phy != NULL)
2709 phy_detach(mp->phy);
2710 flush_scheduled_work();
2711 free_netdev(mp->dev);
2713 platform_set_drvdata(pdev, NULL);
2718 static void mv643xx_eth_shutdown(struct platform_device *pdev)
2720 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
2722 /* Mask all interrupts on ethernet port */
2723 wrl(mp, INT_MASK(mp->port_num), 0);
2724 rdl(mp, INT_MASK(mp->port_num));
2726 if (netif_running(mp->dev))
2730 static struct platform_driver mv643xx_eth_driver = {
2731 .probe = mv643xx_eth_probe,
2732 .remove = mv643xx_eth_remove,
2733 .shutdown = mv643xx_eth_shutdown,
2735 .name = MV643XX_ETH_NAME,
2736 .owner = THIS_MODULE,
2740 static int __init mv643xx_eth_init_module(void)
2744 rc = platform_driver_register(&mv643xx_eth_shared_driver);
2746 rc = platform_driver_register(&mv643xx_eth_driver);
2748 platform_driver_unregister(&mv643xx_eth_shared_driver);
2753 module_init(mv643xx_eth_init_module);
2755 static void __exit mv643xx_eth_cleanup_module(void)
2757 platform_driver_unregister(&mv643xx_eth_driver);
2758 platform_driver_unregister(&mv643xx_eth_shared_driver);
2760 module_exit(mv643xx_eth_cleanup_module);
2762 MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, "
2763 "Manish Lachwani, Dale Farnsworth and Lennert Buytenhek");
2764 MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
2765 MODULE_LICENSE("GPL");
2766 MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME);
2767 MODULE_ALIAS("platform:" MV643XX_ETH_NAME);