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>
41 #include <linux/tcp.h>
42 #include <linux/udp.h>
43 #include <linux/etherdevice.h>
44 #include <linux/delay.h>
45 #include <linux/ethtool.h>
46 #include <linux/platform_device.h>
47 #include <linux/module.h>
48 #include <linux/kernel.h>
49 #include <linux/spinlock.h>
50 #include <linux/workqueue.h>
51 #include <linux/mii.h>
52 #include <linux/mv643xx_eth.h>
54 #include <asm/types.h>
55 #include <asm/system.h>
57 static char mv643xx_eth_driver_name[] = "mv643xx_eth";
58 static char mv643xx_eth_driver_version[] = "1.0";
60 #define MV643XX_ETH_CHECKSUM_OFFLOAD_TX
61 #define MV643XX_ETH_NAPI
62 #define MV643XX_ETH_TX_FAST_REFILL
64 #ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX
65 #define MAX_DESCS_PER_SKB (MAX_SKB_FRAGS + 1)
67 #define MAX_DESCS_PER_SKB 1
71 * Registers shared between all ports.
73 #define PHY_ADDR 0x0000
74 #define SMI_REG 0x0004
75 #define WINDOW_BASE(w) (0x0200 + ((w) << 3))
76 #define WINDOW_SIZE(w) (0x0204 + ((w) << 3))
77 #define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2))
78 #define WINDOW_BAR_ENABLE 0x0290
79 #define WINDOW_PROTECT(w) (0x0294 + ((w) << 4))
84 #define PORT_CONFIG(p) (0x0400 + ((p) << 10))
85 #define UNICAST_PROMISCUOUS_MODE 0x00000001
86 #define PORT_CONFIG_EXT(p) (0x0404 + ((p) << 10))
87 #define MAC_ADDR_LOW(p) (0x0414 + ((p) << 10))
88 #define MAC_ADDR_HIGH(p) (0x0418 + ((p) << 10))
89 #define SDMA_CONFIG(p) (0x041c + ((p) << 10))
90 #define PORT_SERIAL_CONTROL(p) (0x043c + ((p) << 10))
91 #define PORT_STATUS(p) (0x0444 + ((p) << 10))
92 #define TX_FIFO_EMPTY 0x00000400
93 #define TXQ_COMMAND(p) (0x0448 + ((p) << 10))
94 #define TXQ_FIX_PRIO_CONF(p) (0x044c + ((p) << 10))
95 #define TX_BW_RATE(p) (0x0450 + ((p) << 10))
96 #define TX_BW_MTU(p) (0x0458 + ((p) << 10))
97 #define TX_BW_BURST(p) (0x045c + ((p) << 10))
98 #define INT_CAUSE(p) (0x0460 + ((p) << 10))
99 #define INT_TX_END 0x07f80000
100 #define INT_RX 0x0007fbfc
101 #define INT_EXT 0x00000002
102 #define INT_CAUSE_EXT(p) (0x0464 + ((p) << 10))
103 #define INT_EXT_LINK 0x00100000
104 #define INT_EXT_PHY 0x00010000
105 #define INT_EXT_TX_ERROR_0 0x00000100
106 #define INT_EXT_TX_0 0x00000001
107 #define INT_EXT_TX 0x0000ffff
108 #define INT_MASK(p) (0x0468 + ((p) << 10))
109 #define INT_MASK_EXT(p) (0x046c + ((p) << 10))
110 #define TX_FIFO_URGENT_THRESHOLD(p) (0x0474 + ((p) << 10))
111 #define RXQ_CURRENT_DESC_PTR(p, q) (0x060c + ((p) << 10) + ((q) << 4))
112 #define RXQ_COMMAND(p) (0x0680 + ((p) << 10))
113 #define TXQ_CURRENT_DESC_PTR(p, q) (0x06c0 + ((p) << 10) + ((q) << 2))
114 #define TXQ_BW_TOKENS(p, q) (0x0700 + ((p) << 10) + ((q) << 4))
115 #define TXQ_BW_CONF(p, q) (0x0704 + ((p) << 10) + ((q) << 4))
116 #define TXQ_BW_WRR_CONF(p, q) (0x0708 + ((p) << 10) + ((q) << 4))
117 #define MIB_COUNTERS(p) (0x1000 + ((p) << 7))
118 #define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10))
119 #define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10))
120 #define UNICAST_TABLE(p) (0x1600 + ((p) << 10))
124 * SDMA configuration register.
126 #define RX_BURST_SIZE_4_64BIT (2 << 1)
127 #define BLM_RX_NO_SWAP (1 << 4)
128 #define BLM_TX_NO_SWAP (1 << 5)
129 #define TX_BURST_SIZE_4_64BIT (2 << 22)
131 #if defined(__BIG_ENDIAN)
132 #define PORT_SDMA_CONFIG_DEFAULT_VALUE \
133 RX_BURST_SIZE_4_64BIT | \
134 TX_BURST_SIZE_4_64BIT
135 #elif defined(__LITTLE_ENDIAN)
136 #define PORT_SDMA_CONFIG_DEFAULT_VALUE \
137 RX_BURST_SIZE_4_64BIT | \
140 TX_BURST_SIZE_4_64BIT
142 #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
147 * Port serial control register.
149 #define SET_MII_SPEED_TO_100 (1 << 24)
150 #define SET_GMII_SPEED_TO_1000 (1 << 23)
151 #define SET_FULL_DUPLEX_MODE (1 << 21)
152 #define MAX_RX_PACKET_1522BYTE (1 << 17)
153 #define MAX_RX_PACKET_9700BYTE (5 << 17)
154 #define MAX_RX_PACKET_MASK (7 << 17)
155 #define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13)
156 #define DO_NOT_FORCE_LINK_FAIL (1 << 10)
157 #define SERIAL_PORT_CONTROL_RESERVED (1 << 9)
158 #define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3)
159 #define DISABLE_AUTO_NEG_FOR_DUPLEX (1 << 2)
160 #define FORCE_LINK_PASS (1 << 1)
161 #define SERIAL_PORT_ENABLE (1 << 0)
163 #define DEFAULT_RX_QUEUE_SIZE 400
164 #define DEFAULT_TX_QUEUE_SIZE 800
170 #if defined(__BIG_ENDIAN)
172 u16 byte_cnt; /* Descriptor buffer byte count */
173 u16 buf_size; /* Buffer size */
174 u32 cmd_sts; /* Descriptor command status */
175 u32 next_desc_ptr; /* Next descriptor pointer */
176 u32 buf_ptr; /* Descriptor buffer pointer */
180 u16 byte_cnt; /* buffer byte count */
181 u16 l4i_chk; /* CPU provided TCP checksum */
182 u32 cmd_sts; /* Command/status field */
183 u32 next_desc_ptr; /* Pointer to next descriptor */
184 u32 buf_ptr; /* pointer to buffer for this descriptor*/
186 #elif defined(__LITTLE_ENDIAN)
188 u32 cmd_sts; /* Descriptor command status */
189 u16 buf_size; /* Buffer size */
190 u16 byte_cnt; /* Descriptor buffer byte count */
191 u32 buf_ptr; /* Descriptor buffer pointer */
192 u32 next_desc_ptr; /* Next descriptor pointer */
196 u32 cmd_sts; /* Command/status field */
197 u16 l4i_chk; /* CPU provided TCP checksum */
198 u16 byte_cnt; /* buffer byte count */
199 u32 buf_ptr; /* pointer to buffer for this descriptor*/
200 u32 next_desc_ptr; /* Pointer to next descriptor */
203 #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
206 /* RX & TX descriptor command */
207 #define BUFFER_OWNED_BY_DMA 0x80000000
209 /* RX & TX descriptor status */
210 #define ERROR_SUMMARY 0x00000001
212 /* RX descriptor status */
213 #define LAYER_4_CHECKSUM_OK 0x40000000
214 #define RX_ENABLE_INTERRUPT 0x20000000
215 #define RX_FIRST_DESC 0x08000000
216 #define RX_LAST_DESC 0x04000000
218 /* TX descriptor command */
219 #define TX_ENABLE_INTERRUPT 0x00800000
220 #define GEN_CRC 0x00400000
221 #define TX_FIRST_DESC 0x00200000
222 #define TX_LAST_DESC 0x00100000
223 #define ZERO_PADDING 0x00080000
224 #define GEN_IP_V4_CHECKSUM 0x00040000
225 #define GEN_TCP_UDP_CHECKSUM 0x00020000
226 #define UDP_FRAME 0x00010000
228 #define TX_IHL_SHIFT 11
231 /* global *******************************************************************/
232 struct mv643xx_eth_shared_private {
234 * Ethernet controller base address.
239 * Protects access to SMI_REG, which is shared between ports.
244 * Per-port MBUS window access register value.
249 * Hardware-specific parameters.
255 /* per-port *****************************************************************/
256 struct mib_counters {
257 u64 good_octets_received;
258 u32 bad_octets_received;
259 u32 internal_mac_transmit_err;
260 u32 good_frames_received;
261 u32 bad_frames_received;
262 u32 broadcast_frames_received;
263 u32 multicast_frames_received;
264 u32 frames_64_octets;
265 u32 frames_65_to_127_octets;
266 u32 frames_128_to_255_octets;
267 u32 frames_256_to_511_octets;
268 u32 frames_512_to_1023_octets;
269 u32 frames_1024_to_max_octets;
270 u64 good_octets_sent;
271 u32 good_frames_sent;
272 u32 excessive_collision;
273 u32 multicast_frames_sent;
274 u32 broadcast_frames_sent;
275 u32 unrec_mac_control_received;
277 u32 good_fc_received;
279 u32 undersize_received;
280 u32 fragments_received;
281 u32 oversize_received;
283 u32 mac_receive_error;
298 struct rx_desc *rx_desc_area;
299 dma_addr_t rx_desc_dma;
300 int rx_desc_area_size;
301 struct sk_buff **rx_skb;
303 struct timer_list rx_oom;
315 struct tx_desc *tx_desc_area;
316 dma_addr_t tx_desc_dma;
317 int tx_desc_area_size;
318 struct sk_buff **tx_skb;
321 struct mv643xx_eth_private {
322 struct mv643xx_eth_shared_private *shared;
325 struct net_device *dev;
327 struct mv643xx_eth_shared_private *shared_smi;
332 struct mib_counters mib_counters;
333 struct work_struct tx_timeout_task;
334 struct mii_if_info mii;
339 int default_rx_ring_size;
340 unsigned long rx_desc_sram_addr;
341 int rx_desc_sram_size;
344 struct napi_struct napi;
345 struct rx_queue rxq[8];
350 int default_tx_ring_size;
351 unsigned long tx_desc_sram_addr;
352 int tx_desc_sram_size;
355 struct tx_queue txq[8];
356 #ifdef MV643XX_ETH_TX_FAST_REFILL
357 int tx_clean_threshold;
362 /* port register accessors **************************************************/
363 static inline u32 rdl(struct mv643xx_eth_private *mp, int offset)
365 return readl(mp->shared->base + offset);
368 static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data)
370 writel(data, mp->shared->base + offset);
374 /* rxq/txq helper functions *************************************************/
375 static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq)
377 return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]);
380 static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq)
382 return container_of(txq, struct mv643xx_eth_private, txq[txq->index]);
385 static void rxq_enable(struct rx_queue *rxq)
387 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
388 wrl(mp, RXQ_COMMAND(mp->port_num), 1 << rxq->index);
391 static void rxq_disable(struct rx_queue *rxq)
393 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
394 u8 mask = 1 << rxq->index;
396 wrl(mp, RXQ_COMMAND(mp->port_num), mask << 8);
397 while (rdl(mp, RXQ_COMMAND(mp->port_num)) & mask)
401 static void txq_enable(struct tx_queue *txq)
403 struct mv643xx_eth_private *mp = txq_to_mp(txq);
404 wrl(mp, TXQ_COMMAND(mp->port_num), 1 << txq->index);
407 static void txq_disable(struct tx_queue *txq)
409 struct mv643xx_eth_private *mp = txq_to_mp(txq);
410 u8 mask = 1 << txq->index;
412 wrl(mp, TXQ_COMMAND(mp->port_num), mask << 8);
413 while (rdl(mp, TXQ_COMMAND(mp->port_num)) & mask)
417 static void __txq_maybe_wake(struct tx_queue *txq)
419 struct mv643xx_eth_private *mp = txq_to_mp(txq);
422 * netif_{stop,wake}_queue() flow control only applies to
425 BUG_ON(txq->index != mp->txq_primary);
427 if (txq->tx_ring_size - txq->tx_desc_count >= MAX_DESCS_PER_SKB)
428 netif_wake_queue(mp->dev);
432 /* rx ***********************************************************************/
433 static void txq_reclaim(struct tx_queue *txq, int force);
435 static void rxq_refill(struct rx_queue *rxq)
437 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
440 spin_lock_irqsave(&mp->lock, flags);
442 while (rxq->rx_desc_count < rxq->rx_ring_size) {
449 * Reserve 2+14 bytes for an ethernet header (the
450 * hardware automatically prepends 2 bytes of dummy
451 * data to each received packet), 4 bytes for a VLAN
452 * header, and 4 bytes for the trailing FCS -- 24
455 skb_size = mp->dev->mtu + 24;
457 skb = dev_alloc_skb(skb_size + dma_get_cache_alignment() - 1);
461 unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1);
463 skb_reserve(skb, dma_get_cache_alignment() - unaligned);
465 rxq->rx_desc_count++;
466 rx = rxq->rx_used_desc;
467 rxq->rx_used_desc = (rx + 1) % rxq->rx_ring_size;
469 rxq->rx_desc_area[rx].buf_ptr = dma_map_single(NULL, skb->data,
470 skb_size, DMA_FROM_DEVICE);
471 rxq->rx_desc_area[rx].buf_size = skb_size;
472 rxq->rx_skb[rx] = skb;
474 rxq->rx_desc_area[rx].cmd_sts = BUFFER_OWNED_BY_DMA |
479 * The hardware automatically prepends 2 bytes of
480 * dummy data to each received packet, so that the
481 * IP header ends up 16-byte aligned.
486 if (rxq->rx_desc_count == 0) {
487 rxq->rx_oom.expires = jiffies + (HZ / 10);
488 add_timer(&rxq->rx_oom);
491 spin_unlock_irqrestore(&mp->lock, flags);
494 static inline void rxq_refill_timer_wrapper(unsigned long data)
496 rxq_refill((struct rx_queue *)data);
499 static int rxq_process(struct rx_queue *rxq, int budget)
501 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
502 struct net_device_stats *stats = &mp->dev->stats;
506 while (rx < budget) {
507 struct rx_desc *rx_desc;
508 unsigned int cmd_sts;
512 spin_lock_irqsave(&mp->lock, flags);
514 rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc];
516 cmd_sts = rx_desc->cmd_sts;
517 if (cmd_sts & BUFFER_OWNED_BY_DMA) {
518 spin_unlock_irqrestore(&mp->lock, flags);
523 skb = rxq->rx_skb[rxq->rx_curr_desc];
524 rxq->rx_skb[rxq->rx_curr_desc] = NULL;
526 rxq->rx_curr_desc = (rxq->rx_curr_desc + 1) % rxq->rx_ring_size;
528 spin_unlock_irqrestore(&mp->lock, flags);
530 dma_unmap_single(NULL, rx_desc->buf_ptr + 2,
531 mp->dev->mtu + 24, DMA_FROM_DEVICE);
532 rxq->rx_desc_count--;
538 * Note that the descriptor byte count includes 2 dummy
539 * bytes automatically inserted by the hardware at the
540 * start of the packet (which we don't count), and a 4
541 * byte CRC at the end of the packet (which we do count).
544 stats->rx_bytes += rx_desc->byte_cnt - 2;
547 * In case we received a packet without first / last bits
548 * on, or the error summary bit is set, the packet needs
551 if (((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
552 (RX_FIRST_DESC | RX_LAST_DESC))
553 || (cmd_sts & ERROR_SUMMARY)) {
556 if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
557 (RX_FIRST_DESC | RX_LAST_DESC)) {
559 dev_printk(KERN_ERR, &mp->dev->dev,
560 "received packet spanning "
561 "multiple descriptors\n");
564 if (cmd_sts & ERROR_SUMMARY)
567 dev_kfree_skb_irq(skb);
570 * The -4 is for the CRC in the trailer of the
573 skb_put(skb, rx_desc->byte_cnt - 2 - 4);
575 if (cmd_sts & LAYER_4_CHECKSUM_OK) {
576 skb->ip_summed = CHECKSUM_UNNECESSARY;
578 (cmd_sts & 0x0007fff8) >> 3);
580 skb->protocol = eth_type_trans(skb, mp->dev);
581 #ifdef MV643XX_ETH_NAPI
582 netif_receive_skb(skb);
588 mp->dev->last_rx = jiffies;
596 #ifdef MV643XX_ETH_NAPI
597 static int mv643xx_eth_poll(struct napi_struct *napi, int budget)
599 struct mv643xx_eth_private *mp;
603 mp = container_of(napi, struct mv643xx_eth_private, napi);
605 #ifdef MV643XX_ETH_TX_FAST_REFILL
606 if (++mp->tx_clean_threshold > 5) {
607 mp->tx_clean_threshold = 0;
608 for (i = 0; i < 8; i++)
609 if (mp->txq_mask & (1 << i))
610 txq_reclaim(mp->txq + i, 0);
615 for (i = 7; rx < budget && i >= 0; i--)
616 if (mp->rxq_mask & (1 << i))
617 rx += rxq_process(mp->rxq + i, budget - rx);
620 netif_rx_complete(mp->dev, napi);
621 wrl(mp, INT_CAUSE(mp->port_num), 0);
622 wrl(mp, INT_CAUSE_EXT(mp->port_num), 0);
623 wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
631 /* tx ***********************************************************************/
632 static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
636 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
637 skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag];
638 if (fragp->size <= 8 && fragp->page_offset & 7)
645 static int txq_alloc_desc_index(struct tx_queue *txq)
649 BUG_ON(txq->tx_desc_count >= txq->tx_ring_size);
651 tx_desc_curr = txq->tx_curr_desc;
652 txq->tx_curr_desc = (tx_desc_curr + 1) % txq->tx_ring_size;
654 BUG_ON(txq->tx_curr_desc == txq->tx_used_desc);
659 static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb)
661 int nr_frags = skb_shinfo(skb)->nr_frags;
664 for (frag = 0; frag < nr_frags; frag++) {
665 skb_frag_t *this_frag;
667 struct tx_desc *desc;
669 this_frag = &skb_shinfo(skb)->frags[frag];
670 tx_index = txq_alloc_desc_index(txq);
671 desc = &txq->tx_desc_area[tx_index];
674 * The last fragment will generate an interrupt
675 * which will free the skb on TX completion.
677 if (frag == nr_frags - 1) {
678 desc->cmd_sts = BUFFER_OWNED_BY_DMA |
679 ZERO_PADDING | TX_LAST_DESC |
681 txq->tx_skb[tx_index] = skb;
683 desc->cmd_sts = BUFFER_OWNED_BY_DMA;
684 txq->tx_skb[tx_index] = NULL;
688 desc->byte_cnt = this_frag->size;
689 desc->buf_ptr = dma_map_page(NULL, this_frag->page,
690 this_frag->page_offset,
696 static inline __be16 sum16_as_be(__sum16 sum)
698 return (__force __be16)sum;
701 static void txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb)
703 int nr_frags = skb_shinfo(skb)->nr_frags;
705 struct tx_desc *desc;
709 cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA;
711 tx_index = txq_alloc_desc_index(txq);
712 desc = &txq->tx_desc_area[tx_index];
715 txq_submit_frag_skb(txq, skb);
717 length = skb_headlen(skb);
718 txq->tx_skb[tx_index] = NULL;
720 cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT;
722 txq->tx_skb[tx_index] = skb;
725 desc->byte_cnt = length;
726 desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE);
728 if (skb->ip_summed == CHECKSUM_PARTIAL) {
729 BUG_ON(skb->protocol != htons(ETH_P_IP));
731 cmd_sts |= GEN_TCP_UDP_CHECKSUM |
733 ip_hdr(skb)->ihl << TX_IHL_SHIFT;
735 switch (ip_hdr(skb)->protocol) {
737 cmd_sts |= UDP_FRAME;
738 desc->l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check));
741 desc->l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check));
747 /* Errata BTS #50, IHL must be 5 if no HW checksum */
748 cmd_sts |= 5 << TX_IHL_SHIFT;
752 /* ensure all other descriptors are written before first cmd_sts */
754 desc->cmd_sts = cmd_sts;
756 /* ensure all descriptors are written before poking hardware */
760 txq->tx_desc_count += nr_frags + 1;
763 static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev)
765 struct mv643xx_eth_private *mp = netdev_priv(dev);
766 struct net_device_stats *stats = &dev->stats;
767 struct tx_queue *txq;
770 if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) {
772 dev_printk(KERN_DEBUG, &dev->dev,
773 "failed to linearize skb with tiny "
774 "unaligned fragment\n");
775 return NETDEV_TX_BUSY;
778 spin_lock_irqsave(&mp->lock, flags);
780 txq = mp->txq + mp->txq_primary;
782 if (txq->tx_ring_size - txq->tx_desc_count < MAX_DESCS_PER_SKB) {
783 spin_unlock_irqrestore(&mp->lock, flags);
784 if (txq->index == mp->txq_primary && net_ratelimit())
785 dev_printk(KERN_ERR, &dev->dev,
786 "primary tx queue full?!\n");
791 txq_submit_skb(txq, skb);
792 stats->tx_bytes += skb->len;
794 dev->trans_start = jiffies;
796 if (txq->index == mp->txq_primary) {
799 entries_left = txq->tx_ring_size - txq->tx_desc_count;
800 if (entries_left < MAX_DESCS_PER_SKB)
801 netif_stop_queue(dev);
804 spin_unlock_irqrestore(&mp->lock, flags);
810 /* tx rate control **********************************************************/
812 * Set total maximum TX rate (shared by all TX queues for this port)
813 * to 'rate' bits per second, with a maximum burst of 'burst' bytes.
815 static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst)
821 token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
822 if (token_rate > 1023)
825 mtu = (mp->dev->mtu + 255) >> 8;
829 bucket_size = (burst + 255) >> 8;
830 if (bucket_size > 65535)
833 wrl(mp, TX_BW_RATE(mp->port_num), token_rate);
834 wrl(mp, TX_BW_MTU(mp->port_num), mtu);
835 wrl(mp, TX_BW_BURST(mp->port_num), bucket_size);
838 static void txq_set_rate(struct tx_queue *txq, int rate, int burst)
840 struct mv643xx_eth_private *mp = txq_to_mp(txq);
844 token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
845 if (token_rate > 1023)
848 bucket_size = (burst + 255) >> 8;
849 if (bucket_size > 65535)
852 wrl(mp, TXQ_BW_TOKENS(mp->port_num, txq->index), token_rate << 14);
853 wrl(mp, TXQ_BW_CONF(mp->port_num, txq->index),
854 (bucket_size << 10) | token_rate);
857 static void txq_set_fixed_prio_mode(struct tx_queue *txq)
859 struct mv643xx_eth_private *mp = txq_to_mp(txq);
864 * Turn on fixed priority mode.
866 off = TXQ_FIX_PRIO_CONF(mp->port_num);
869 val |= 1 << txq->index;
873 static void txq_set_wrr(struct tx_queue *txq, int weight)
875 struct mv643xx_eth_private *mp = txq_to_mp(txq);
880 * Turn off fixed priority mode.
882 off = TXQ_FIX_PRIO_CONF(mp->port_num);
885 val &= ~(1 << txq->index);
889 * Configure WRR weight for this queue.
891 off = TXQ_BW_WRR_CONF(mp->port_num, txq->index);
894 val = (val & ~0xff) | (weight & 0xff);
899 /* mii management interface *************************************************/
900 #define SMI_BUSY 0x10000000
901 #define SMI_READ_VALID 0x08000000
902 #define SMI_OPCODE_READ 0x04000000
903 #define SMI_OPCODE_WRITE 0x00000000
905 static void smi_reg_read(struct mv643xx_eth_private *mp, unsigned int addr,
906 unsigned int reg, unsigned int *value)
908 void __iomem *smi_reg = mp->shared_smi->base + SMI_REG;
912 /* the SMI register is a shared resource */
913 spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
915 /* wait for the SMI register to become available */
916 for (i = 0; readl(smi_reg) & SMI_BUSY; i++) {
918 printk("%s: PHY busy timeout\n", mp->dev->name);
924 writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg);
926 /* now wait for the data to be valid */
927 for (i = 0; !(readl(smi_reg) & SMI_READ_VALID); i++) {
929 printk("%s: PHY read timeout\n", mp->dev->name);
935 *value = readl(smi_reg) & 0xffff;
937 spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
940 static void smi_reg_write(struct mv643xx_eth_private *mp,
942 unsigned int reg, unsigned int value)
944 void __iomem *smi_reg = mp->shared_smi->base + SMI_REG;
948 /* the SMI register is a shared resource */
949 spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
951 /* wait for the SMI register to become available */
952 for (i = 0; readl(smi_reg) & SMI_BUSY; i++) {
954 printk("%s: PHY busy timeout\n", mp->dev->name);
960 writel(SMI_OPCODE_WRITE | (reg << 21) |
961 (addr << 16) | (value & 0xffff), smi_reg);
963 spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
967 /* mib counters *************************************************************/
968 static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset)
970 return rdl(mp, MIB_COUNTERS(mp->port_num) + offset);
973 static void mib_counters_clear(struct mv643xx_eth_private *mp)
977 for (i = 0; i < 0x80; i += 4)
981 static void mib_counters_update(struct mv643xx_eth_private *mp)
983 struct mib_counters *p = &mp->mib_counters;
985 p->good_octets_received += mib_read(mp, 0x00);
986 p->good_octets_received += (u64)mib_read(mp, 0x04) << 32;
987 p->bad_octets_received += mib_read(mp, 0x08);
988 p->internal_mac_transmit_err += mib_read(mp, 0x0c);
989 p->good_frames_received += mib_read(mp, 0x10);
990 p->bad_frames_received += mib_read(mp, 0x14);
991 p->broadcast_frames_received += mib_read(mp, 0x18);
992 p->multicast_frames_received += mib_read(mp, 0x1c);
993 p->frames_64_octets += mib_read(mp, 0x20);
994 p->frames_65_to_127_octets += mib_read(mp, 0x24);
995 p->frames_128_to_255_octets += mib_read(mp, 0x28);
996 p->frames_256_to_511_octets += mib_read(mp, 0x2c);
997 p->frames_512_to_1023_octets += mib_read(mp, 0x30);
998 p->frames_1024_to_max_octets += mib_read(mp, 0x34);
999 p->good_octets_sent += mib_read(mp, 0x38);
1000 p->good_octets_sent += (u64)mib_read(mp, 0x3c) << 32;
1001 p->good_frames_sent += mib_read(mp, 0x40);
1002 p->excessive_collision += mib_read(mp, 0x44);
1003 p->multicast_frames_sent += mib_read(mp, 0x48);
1004 p->broadcast_frames_sent += mib_read(mp, 0x4c);
1005 p->unrec_mac_control_received += mib_read(mp, 0x50);
1006 p->fc_sent += mib_read(mp, 0x54);
1007 p->good_fc_received += mib_read(mp, 0x58);
1008 p->bad_fc_received += mib_read(mp, 0x5c);
1009 p->undersize_received += mib_read(mp, 0x60);
1010 p->fragments_received += mib_read(mp, 0x64);
1011 p->oversize_received += mib_read(mp, 0x68);
1012 p->jabber_received += mib_read(mp, 0x6c);
1013 p->mac_receive_error += mib_read(mp, 0x70);
1014 p->bad_crc_event += mib_read(mp, 0x74);
1015 p->collision += mib_read(mp, 0x78);
1016 p->late_collision += mib_read(mp, 0x7c);
1020 /* ethtool ******************************************************************/
1021 struct mv643xx_eth_stats {
1022 char stat_string[ETH_GSTRING_LEN];
1029 { #m, FIELD_SIZEOF(struct net_device_stats, m), \
1030 offsetof(struct net_device, stats.m), -1 }
1032 #define MIBSTAT(m) \
1033 { #m, FIELD_SIZEOF(struct mib_counters, m), \
1034 -1, offsetof(struct mv643xx_eth_private, mib_counters.m) }
1036 static const struct mv643xx_eth_stats mv643xx_eth_stats[] = {
1045 MIBSTAT(good_octets_received),
1046 MIBSTAT(bad_octets_received),
1047 MIBSTAT(internal_mac_transmit_err),
1048 MIBSTAT(good_frames_received),
1049 MIBSTAT(bad_frames_received),
1050 MIBSTAT(broadcast_frames_received),
1051 MIBSTAT(multicast_frames_received),
1052 MIBSTAT(frames_64_octets),
1053 MIBSTAT(frames_65_to_127_octets),
1054 MIBSTAT(frames_128_to_255_octets),
1055 MIBSTAT(frames_256_to_511_octets),
1056 MIBSTAT(frames_512_to_1023_octets),
1057 MIBSTAT(frames_1024_to_max_octets),
1058 MIBSTAT(good_octets_sent),
1059 MIBSTAT(good_frames_sent),
1060 MIBSTAT(excessive_collision),
1061 MIBSTAT(multicast_frames_sent),
1062 MIBSTAT(broadcast_frames_sent),
1063 MIBSTAT(unrec_mac_control_received),
1065 MIBSTAT(good_fc_received),
1066 MIBSTAT(bad_fc_received),
1067 MIBSTAT(undersize_received),
1068 MIBSTAT(fragments_received),
1069 MIBSTAT(oversize_received),
1070 MIBSTAT(jabber_received),
1071 MIBSTAT(mac_receive_error),
1072 MIBSTAT(bad_crc_event),
1074 MIBSTAT(late_collision),
1077 static int mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1079 struct mv643xx_eth_private *mp = netdev_priv(dev);
1082 spin_lock_irq(&mp->lock);
1083 err = mii_ethtool_gset(&mp->mii, cmd);
1084 spin_unlock_irq(&mp->lock);
1087 * The MAC does not support 1000baseT_Half.
1089 cmd->supported &= ~SUPPORTED_1000baseT_Half;
1090 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
1095 static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1097 struct mv643xx_eth_private *mp = netdev_priv(dev);
1101 * The MAC does not support 1000baseT_Half.
1103 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
1105 spin_lock_irq(&mp->lock);
1106 err = mii_ethtool_sset(&mp->mii, cmd);
1107 spin_unlock_irq(&mp->lock);
1112 static void mv643xx_eth_get_drvinfo(struct net_device *dev,
1113 struct ethtool_drvinfo *drvinfo)
1115 strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32);
1116 strncpy(drvinfo->version, mv643xx_eth_driver_version, 32);
1117 strncpy(drvinfo->fw_version, "N/A", 32);
1118 strncpy(drvinfo->bus_info, "platform", 32);
1119 drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats);
1122 static int mv643xx_eth_nway_reset(struct net_device *dev)
1124 struct mv643xx_eth_private *mp = netdev_priv(dev);
1126 return mii_nway_restart(&mp->mii);
1129 static u32 mv643xx_eth_get_link(struct net_device *dev)
1131 struct mv643xx_eth_private *mp = netdev_priv(dev);
1133 return mii_link_ok(&mp->mii);
1136 static void mv643xx_eth_get_strings(struct net_device *dev,
1137 uint32_t stringset, uint8_t *data)
1141 if (stringset == ETH_SS_STATS) {
1142 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
1143 memcpy(data + i * ETH_GSTRING_LEN,
1144 mv643xx_eth_stats[i].stat_string,
1150 static void mv643xx_eth_get_ethtool_stats(struct net_device *dev,
1151 struct ethtool_stats *stats,
1154 struct mv643xx_eth_private *mp = dev->priv;
1157 mib_counters_update(mp);
1159 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
1160 const struct mv643xx_eth_stats *stat;
1163 stat = mv643xx_eth_stats + i;
1165 if (stat->netdev_off >= 0)
1166 p = ((void *)mp->dev) + stat->netdev_off;
1168 p = ((void *)mp) + stat->mp_off;
1170 data[i] = (stat->sizeof_stat == 8) ?
1171 *(uint64_t *)p : *(uint32_t *)p;
1175 static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset)
1177 if (sset == ETH_SS_STATS)
1178 return ARRAY_SIZE(mv643xx_eth_stats);
1183 static const struct ethtool_ops mv643xx_eth_ethtool_ops = {
1184 .get_settings = mv643xx_eth_get_settings,
1185 .set_settings = mv643xx_eth_set_settings,
1186 .get_drvinfo = mv643xx_eth_get_drvinfo,
1187 .nway_reset = mv643xx_eth_nway_reset,
1188 .get_link = mv643xx_eth_get_link,
1189 .set_sg = ethtool_op_set_sg,
1190 .get_strings = mv643xx_eth_get_strings,
1191 .get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
1192 .get_sset_count = mv643xx_eth_get_sset_count,
1196 /* address handling *********************************************************/
1197 static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr)
1202 mac_h = rdl(mp, MAC_ADDR_HIGH(mp->port_num));
1203 mac_l = rdl(mp, MAC_ADDR_LOW(mp->port_num));
1205 addr[0] = (mac_h >> 24) & 0xff;
1206 addr[1] = (mac_h >> 16) & 0xff;
1207 addr[2] = (mac_h >> 8) & 0xff;
1208 addr[3] = mac_h & 0xff;
1209 addr[4] = (mac_l >> 8) & 0xff;
1210 addr[5] = mac_l & 0xff;
1213 static void init_mac_tables(struct mv643xx_eth_private *mp)
1217 for (i = 0; i < 0x100; i += 4) {
1218 wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0);
1219 wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0);
1222 for (i = 0; i < 0x10; i += 4)
1223 wrl(mp, UNICAST_TABLE(mp->port_num) + i, 0);
1226 static void set_filter_table_entry(struct mv643xx_eth_private *mp,
1227 int table, unsigned char entry)
1229 unsigned int table_reg;
1231 /* Set "accepts frame bit" at specified table entry */
1232 table_reg = rdl(mp, table + (entry & 0xfc));
1233 table_reg |= 0x01 << (8 * (entry & 3));
1234 wrl(mp, table + (entry & 0xfc), table_reg);
1237 static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr)
1243 mac_l = (addr[4] << 8) | addr[5];
1244 mac_h = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3];
1246 wrl(mp, MAC_ADDR_LOW(mp->port_num), mac_l);
1247 wrl(mp, MAC_ADDR_HIGH(mp->port_num), mac_h);
1249 table = UNICAST_TABLE(mp->port_num);
1250 set_filter_table_entry(mp, table, addr[5] & 0x0f);
1253 static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
1255 struct mv643xx_eth_private *mp = netdev_priv(dev);
1257 /* +2 is for the offset of the HW addr type */
1258 memcpy(dev->dev_addr, addr + 2, 6);
1260 init_mac_tables(mp);
1261 uc_addr_set(mp, dev->dev_addr);
1266 static int addr_crc(unsigned char *addr)
1271 for (i = 0; i < 6; i++) {
1274 crc = (crc ^ addr[i]) << 8;
1275 for (j = 7; j >= 0; j--) {
1276 if (crc & (0x100 << j))
1284 static void mv643xx_eth_set_rx_mode(struct net_device *dev)
1286 struct mv643xx_eth_private *mp = netdev_priv(dev);
1288 struct dev_addr_list *addr;
1291 port_config = rdl(mp, PORT_CONFIG(mp->port_num));
1292 if (dev->flags & IFF_PROMISC)
1293 port_config |= UNICAST_PROMISCUOUS_MODE;
1295 port_config &= ~UNICAST_PROMISCUOUS_MODE;
1296 wrl(mp, PORT_CONFIG(mp->port_num), port_config);
1298 if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) {
1299 int port_num = mp->port_num;
1300 u32 accept = 0x01010101;
1302 for (i = 0; i < 0x100; i += 4) {
1303 wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept);
1304 wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept);
1309 for (i = 0; i < 0x100; i += 4) {
1310 wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0);
1311 wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0);
1314 for (addr = dev->mc_list; addr != NULL; addr = addr->next) {
1315 u8 *a = addr->da_addr;
1318 if (addr->da_addrlen != 6)
1321 if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) {
1322 table = SPECIAL_MCAST_TABLE(mp->port_num);
1323 set_filter_table_entry(mp, table, a[5]);
1325 int crc = addr_crc(a);
1327 table = OTHER_MCAST_TABLE(mp->port_num);
1328 set_filter_table_entry(mp, table, crc);
1334 /* rx/tx queue initialisation ***********************************************/
1335 static int rxq_init(struct mv643xx_eth_private *mp, int index)
1337 struct rx_queue *rxq = mp->rxq + index;
1338 struct rx_desc *rx_desc;
1344 rxq->rx_ring_size = mp->default_rx_ring_size;
1346 rxq->rx_desc_count = 0;
1347 rxq->rx_curr_desc = 0;
1348 rxq->rx_used_desc = 0;
1350 size = rxq->rx_ring_size * sizeof(struct rx_desc);
1352 if (index == mp->rxq_primary && size <= mp->rx_desc_sram_size) {
1353 rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr,
1354 mp->rx_desc_sram_size);
1355 rxq->rx_desc_dma = mp->rx_desc_sram_addr;
1357 rxq->rx_desc_area = dma_alloc_coherent(NULL, size,
1362 if (rxq->rx_desc_area == NULL) {
1363 dev_printk(KERN_ERR, &mp->dev->dev,
1364 "can't allocate rx ring (%d bytes)\n", size);
1367 memset(rxq->rx_desc_area, 0, size);
1369 rxq->rx_desc_area_size = size;
1370 rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb),
1372 if (rxq->rx_skb == NULL) {
1373 dev_printk(KERN_ERR, &mp->dev->dev,
1374 "can't allocate rx skb ring\n");
1378 rx_desc = (struct rx_desc *)rxq->rx_desc_area;
1379 for (i = 0; i < rxq->rx_ring_size; i++) {
1380 int nexti = (i + 1) % rxq->rx_ring_size;
1381 rx_desc[i].next_desc_ptr = rxq->rx_desc_dma +
1382 nexti * sizeof(struct rx_desc);
1385 init_timer(&rxq->rx_oom);
1386 rxq->rx_oom.data = (unsigned long)rxq;
1387 rxq->rx_oom.function = rxq_refill_timer_wrapper;
1393 if (index == mp->rxq_primary && size <= mp->rx_desc_sram_size)
1394 iounmap(rxq->rx_desc_area);
1396 dma_free_coherent(NULL, size,
1404 static void rxq_deinit(struct rx_queue *rxq)
1406 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
1411 del_timer_sync(&rxq->rx_oom);
1413 for (i = 0; i < rxq->rx_ring_size; i++) {
1414 if (rxq->rx_skb[i]) {
1415 dev_kfree_skb(rxq->rx_skb[i]);
1416 rxq->rx_desc_count--;
1420 if (rxq->rx_desc_count) {
1421 dev_printk(KERN_ERR, &mp->dev->dev,
1422 "error freeing rx ring -- %d skbs stuck\n",
1423 rxq->rx_desc_count);
1426 if (rxq->index == mp->rxq_primary &&
1427 rxq->rx_desc_area_size <= mp->rx_desc_sram_size)
1428 iounmap(rxq->rx_desc_area);
1430 dma_free_coherent(NULL, rxq->rx_desc_area_size,
1431 rxq->rx_desc_area, rxq->rx_desc_dma);
1436 static int txq_init(struct mv643xx_eth_private *mp, int index)
1438 struct tx_queue *txq = mp->txq + index;
1439 struct tx_desc *tx_desc;
1445 txq->tx_ring_size = mp->default_tx_ring_size;
1447 txq->tx_desc_count = 0;
1448 txq->tx_curr_desc = 0;
1449 txq->tx_used_desc = 0;
1451 size = txq->tx_ring_size * sizeof(struct tx_desc);
1453 if (index == mp->txq_primary && size <= mp->tx_desc_sram_size) {
1454 txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr,
1455 mp->tx_desc_sram_size);
1456 txq->tx_desc_dma = mp->tx_desc_sram_addr;
1458 txq->tx_desc_area = dma_alloc_coherent(NULL, size,
1463 if (txq->tx_desc_area == NULL) {
1464 dev_printk(KERN_ERR, &mp->dev->dev,
1465 "can't allocate tx ring (%d bytes)\n", size);
1468 memset(txq->tx_desc_area, 0, size);
1470 txq->tx_desc_area_size = size;
1471 txq->tx_skb = kmalloc(txq->tx_ring_size * sizeof(*txq->tx_skb),
1473 if (txq->tx_skb == NULL) {
1474 dev_printk(KERN_ERR, &mp->dev->dev,
1475 "can't allocate tx skb ring\n");
1479 tx_desc = (struct tx_desc *)txq->tx_desc_area;
1480 for (i = 0; i < txq->tx_ring_size; i++) {
1481 int nexti = (i + 1) % txq->tx_ring_size;
1482 tx_desc[i].next_desc_ptr = txq->tx_desc_dma +
1483 nexti * sizeof(struct tx_desc);
1490 if (index == mp->txq_primary && size <= mp->tx_desc_sram_size)
1491 iounmap(txq->tx_desc_area);
1493 dma_free_coherent(NULL, size,
1501 static void txq_reclaim(struct tx_queue *txq, int force)
1503 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1504 unsigned long flags;
1506 spin_lock_irqsave(&mp->lock, flags);
1507 while (txq->tx_desc_count > 0) {
1509 struct tx_desc *desc;
1511 struct sk_buff *skb;
1515 tx_index = txq->tx_used_desc;
1516 desc = &txq->tx_desc_area[tx_index];
1517 cmd_sts = desc->cmd_sts;
1519 if (!force && (cmd_sts & BUFFER_OWNED_BY_DMA))
1522 txq->tx_used_desc = (tx_index + 1) % txq->tx_ring_size;
1523 txq->tx_desc_count--;
1525 addr = desc->buf_ptr;
1526 count = desc->byte_cnt;
1527 skb = txq->tx_skb[tx_index];
1528 txq->tx_skb[tx_index] = NULL;
1530 if (cmd_sts & ERROR_SUMMARY) {
1531 dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n");
1532 mp->dev->stats.tx_errors++;
1536 * Drop mp->lock while we free the skb.
1538 spin_unlock_irqrestore(&mp->lock, flags);
1540 if (cmd_sts & TX_FIRST_DESC)
1541 dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE);
1543 dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE);
1546 dev_kfree_skb_irq(skb);
1548 spin_lock_irqsave(&mp->lock, flags);
1550 spin_unlock_irqrestore(&mp->lock, flags);
1553 static void txq_deinit(struct tx_queue *txq)
1555 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1558 txq_reclaim(txq, 1);
1560 BUG_ON(txq->tx_used_desc != txq->tx_curr_desc);
1562 if (txq->index == mp->txq_primary &&
1563 txq->tx_desc_area_size <= mp->tx_desc_sram_size)
1564 iounmap(txq->tx_desc_area);
1566 dma_free_coherent(NULL, txq->tx_desc_area_size,
1567 txq->tx_desc_area, txq->tx_desc_dma);
1573 /* netdev ops and related ***************************************************/
1574 static void update_pscr(struct mv643xx_eth_private *mp, int speed, int duplex)
1579 pscr_o = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
1581 /* clear speed, duplex and rx buffer size fields */
1582 pscr_n = pscr_o & ~(SET_MII_SPEED_TO_100 |
1583 SET_GMII_SPEED_TO_1000 |
1584 SET_FULL_DUPLEX_MODE |
1585 MAX_RX_PACKET_MASK);
1587 if (speed == SPEED_1000) {
1588 pscr_n |= SET_GMII_SPEED_TO_1000 | MAX_RX_PACKET_9700BYTE;
1590 if (speed == SPEED_100)
1591 pscr_n |= SET_MII_SPEED_TO_100;
1592 pscr_n |= MAX_RX_PACKET_1522BYTE;
1595 if (duplex == DUPLEX_FULL)
1596 pscr_n |= SET_FULL_DUPLEX_MODE;
1598 if (pscr_n != pscr_o) {
1599 if ((pscr_o & SERIAL_PORT_ENABLE) == 0)
1600 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n);
1604 for (i = 0; i < 8; i++)
1605 if (mp->txq_mask & (1 << i))
1606 txq_disable(mp->txq + i);
1608 pscr_o &= ~SERIAL_PORT_ENABLE;
1609 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_o);
1610 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n);
1611 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n);
1613 for (i = 0; i < 8; i++)
1614 if (mp->txq_mask & (1 << i))
1615 txq_enable(mp->txq + i);
1620 static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id)
1622 struct net_device *dev = (struct net_device *)dev_id;
1623 struct mv643xx_eth_private *mp = netdev_priv(dev);
1628 int_cause = rdl(mp, INT_CAUSE(mp->port_num)) &
1629 (INT_TX_END | INT_RX | INT_EXT);
1634 if (int_cause & INT_EXT) {
1635 int_cause_ext = rdl(mp, INT_CAUSE_EXT(mp->port_num))
1636 & (INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
1637 wrl(mp, INT_CAUSE_EXT(mp->port_num), ~int_cause_ext);
1640 if (int_cause_ext & (INT_EXT_PHY | INT_EXT_LINK)) {
1641 if (mii_link_ok(&mp->mii)) {
1642 struct ethtool_cmd cmd;
1645 mii_ethtool_gset(&mp->mii, &cmd);
1646 update_pscr(mp, cmd.speed, cmd.duplex);
1647 for (i = 0; i < 8; i++)
1648 if (mp->txq_mask & (1 << i))
1649 txq_enable(mp->txq + i);
1651 if (!netif_carrier_ok(dev)) {
1652 netif_carrier_on(dev);
1653 __txq_maybe_wake(mp->txq + mp->txq_primary);
1655 } else if (netif_carrier_ok(dev)) {
1656 netif_stop_queue(dev);
1657 netif_carrier_off(dev);
1662 * RxBuffer or RxError set for any of the 8 queues?
1664 #ifdef MV643XX_ETH_NAPI
1665 if (int_cause & INT_RX) {
1666 wrl(mp, INT_MASK(mp->port_num), 0x00000000);
1667 rdl(mp, INT_MASK(mp->port_num));
1669 netif_rx_schedule(dev, &mp->napi);
1672 if (int_cause & INT_RX) {
1675 for (i = 7; i >= 0; i--)
1676 if (mp->rxq_mask & (1 << i))
1677 rxq_process(mp->rxq + i, INT_MAX);
1681 txq_active = rdl(mp, TXQ_COMMAND(mp->port_num));
1684 * TxBuffer or TxError set for any of the 8 queues?
1686 if (int_cause_ext & INT_EXT_TX) {
1689 for (i = 0; i < 8; i++)
1690 if (mp->txq_mask & (1 << i))
1691 txq_reclaim(mp->txq + i, 0);
1695 * Any TxEnd interrupts?
1697 if (int_cause & INT_TX_END) {
1700 wrl(mp, INT_CAUSE(mp->port_num), ~(int_cause & INT_TX_END));
1701 for (i = 0; i < 8; i++) {
1702 struct tx_queue *txq = mp->txq + i;
1703 if (txq->tx_desc_count && !((txq_active >> i) & 1))
1709 * Enough space again in the primary TX queue for a full packet?
1711 if (int_cause_ext & INT_EXT_TX) {
1712 struct tx_queue *txq = mp->txq + mp->txq_primary;
1713 __txq_maybe_wake(txq);
1719 static void phy_reset(struct mv643xx_eth_private *mp)
1723 smi_reg_read(mp, mp->phy_addr, 0, &data);
1725 smi_reg_write(mp, mp->phy_addr, 0, data);
1729 smi_reg_read(mp, mp->phy_addr, 0, &data);
1730 } while (data & 0x8000);
1733 static void port_start(struct mv643xx_eth_private *mp)
1736 struct ethtool_cmd ethtool_cmd;
1740 * Configure basic link parameters.
1742 pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
1743 pscr &= ~(SERIAL_PORT_ENABLE | FORCE_LINK_PASS);
1744 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
1745 pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL |
1746 DISABLE_AUTO_NEG_SPEED_GMII |
1747 DISABLE_AUTO_NEG_FOR_DUPLEX |
1748 DO_NOT_FORCE_LINK_FAIL |
1749 SERIAL_PORT_CONTROL_RESERVED;
1750 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
1751 pscr |= SERIAL_PORT_ENABLE;
1752 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
1754 wrl(mp, SDMA_CONFIG(mp->port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE);
1756 mv643xx_eth_get_settings(mp->dev, ðtool_cmd);
1758 mv643xx_eth_set_settings(mp->dev, ðtool_cmd);
1761 * Configure TX path and queues.
1763 tx_set_rate(mp, 1000000000, 16777216);
1764 for (i = 0; i < 8; i++) {
1765 struct tx_queue *txq = mp->txq + i;
1766 int off = TXQ_CURRENT_DESC_PTR(mp->port_num, i);
1769 if ((mp->txq_mask & (1 << i)) == 0)
1772 addr = (u32)txq->tx_desc_dma;
1773 addr += txq->tx_curr_desc * sizeof(struct tx_desc);
1776 txq_set_rate(txq, 1000000000, 16777216);
1777 txq_set_fixed_prio_mode(txq);
1781 * Add configured unicast address to address filter table.
1783 uc_addr_set(mp, mp->dev->dev_addr);
1786 * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast
1787 * frames to RX queue #0.
1789 wrl(mp, PORT_CONFIG(mp->port_num), 0x00000000);
1792 * Treat BPDUs as normal multicasts, and disable partition mode.
1794 wrl(mp, PORT_CONFIG_EXT(mp->port_num), 0x00000000);
1797 * Enable the receive queues.
1799 for (i = 0; i < 8; i++) {
1800 struct rx_queue *rxq = mp->rxq + i;
1801 int off = RXQ_CURRENT_DESC_PTR(mp->port_num, i);
1804 if ((mp->rxq_mask & (1 << i)) == 0)
1807 addr = (u32)rxq->rx_desc_dma;
1808 addr += rxq->rx_curr_desc * sizeof(struct rx_desc);
1815 static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int delay)
1817 unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
1822 wrl(mp, SDMA_CONFIG(mp->port_num),
1823 ((coal & 0x3fff) << 8) |
1824 (rdl(mp, SDMA_CONFIG(mp->port_num))
1828 static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int delay)
1830 unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
1834 wrl(mp, TX_FIFO_URGENT_THRESHOLD(mp->port_num), (coal & 0x3fff) << 4);
1837 static int mv643xx_eth_open(struct net_device *dev)
1839 struct mv643xx_eth_private *mp = netdev_priv(dev);
1843 wrl(mp, INT_CAUSE(mp->port_num), 0);
1844 wrl(mp, INT_CAUSE_EXT(mp->port_num), 0);
1845 rdl(mp, INT_CAUSE_EXT(mp->port_num));
1847 err = request_irq(dev->irq, mv643xx_eth_irq,
1848 IRQF_SHARED | IRQF_SAMPLE_RANDOM,
1851 dev_printk(KERN_ERR, &dev->dev, "can't assign irq\n");
1855 init_mac_tables(mp);
1857 for (i = 0; i < 8; i++) {
1858 if ((mp->rxq_mask & (1 << i)) == 0)
1861 err = rxq_init(mp, i);
1864 if (mp->rxq_mask & (1 << i))
1865 rxq_deinit(mp->rxq + i);
1869 rxq_refill(mp->rxq + i);
1872 for (i = 0; i < 8; i++) {
1873 if ((mp->txq_mask & (1 << i)) == 0)
1876 err = txq_init(mp, i);
1879 if (mp->txq_mask & (1 << i))
1880 txq_deinit(mp->txq + i);
1885 #ifdef MV643XX_ETH_NAPI
1886 napi_enable(&mp->napi);
1894 wrl(mp, INT_MASK_EXT(mp->port_num),
1895 INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
1897 wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
1903 for (i = 0; i < 8; i++)
1904 if (mp->rxq_mask & (1 << i))
1905 rxq_deinit(mp->rxq + i);
1907 free_irq(dev->irq, dev);
1912 static void port_reset(struct mv643xx_eth_private *mp)
1917 for (i = 0; i < 8; i++) {
1918 if (mp->rxq_mask & (1 << i))
1919 rxq_disable(mp->rxq + i);
1920 if (mp->txq_mask & (1 << i))
1921 txq_disable(mp->txq + i);
1923 while (!(rdl(mp, PORT_STATUS(mp->port_num)) & TX_FIFO_EMPTY))
1926 /* Reset the Enable bit in the Configuration Register */
1927 data = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
1928 data &= ~(SERIAL_PORT_ENABLE |
1929 DO_NOT_FORCE_LINK_FAIL |
1931 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), data);
1934 static int mv643xx_eth_stop(struct net_device *dev)
1936 struct mv643xx_eth_private *mp = netdev_priv(dev);
1939 wrl(mp, INT_MASK(mp->port_num), 0x00000000);
1940 rdl(mp, INT_MASK(mp->port_num));
1942 #ifdef MV643XX_ETH_NAPI
1943 napi_disable(&mp->napi);
1945 netif_carrier_off(dev);
1946 netif_stop_queue(dev);
1948 free_irq(dev->irq, dev);
1951 mib_counters_update(mp);
1953 for (i = 0; i < 8; i++) {
1954 if (mp->rxq_mask & (1 << i))
1955 rxq_deinit(mp->rxq + i);
1956 if (mp->txq_mask & (1 << i))
1957 txq_deinit(mp->txq + i);
1963 static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1965 struct mv643xx_eth_private *mp = netdev_priv(dev);
1967 return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL);
1970 static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
1972 struct mv643xx_eth_private *mp = netdev_priv(dev);
1974 if (new_mtu < 64 || new_mtu > 9500)
1978 tx_set_rate(mp, 1000000000, 16777216);
1980 if (!netif_running(dev))
1984 * Stop and then re-open the interface. This will allocate RX
1985 * skbs of the new MTU.
1986 * There is a possible danger that the open will not succeed,
1987 * due to memory being full.
1989 mv643xx_eth_stop(dev);
1990 if (mv643xx_eth_open(dev)) {
1991 dev_printk(KERN_ERR, &dev->dev,
1992 "fatal error on re-opening device after "
1999 static void tx_timeout_task(struct work_struct *ugly)
2001 struct mv643xx_eth_private *mp;
2003 mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task);
2004 if (netif_running(mp->dev)) {
2005 netif_stop_queue(mp->dev);
2010 __txq_maybe_wake(mp->txq + mp->txq_primary);
2014 static void mv643xx_eth_tx_timeout(struct net_device *dev)
2016 struct mv643xx_eth_private *mp = netdev_priv(dev);
2018 dev_printk(KERN_INFO, &dev->dev, "tx timeout\n");
2020 schedule_work(&mp->tx_timeout_task);
2023 #ifdef CONFIG_NET_POLL_CONTROLLER
2024 static void mv643xx_eth_netpoll(struct net_device *dev)
2026 struct mv643xx_eth_private *mp = netdev_priv(dev);
2028 wrl(mp, INT_MASK(mp->port_num), 0x00000000);
2029 rdl(mp, INT_MASK(mp->port_num));
2031 mv643xx_eth_irq(dev->irq, dev);
2033 wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_CAUSE_EXT);
2037 static int mv643xx_eth_mdio_read(struct net_device *dev, int addr, int reg)
2039 struct mv643xx_eth_private *mp = netdev_priv(dev);
2042 smi_reg_read(mp, addr, reg, &val);
2047 static void mv643xx_eth_mdio_write(struct net_device *dev, int addr, int reg, int val)
2049 struct mv643xx_eth_private *mp = netdev_priv(dev);
2050 smi_reg_write(mp, addr, reg, val);
2054 /* platform glue ************************************************************/
2056 mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp,
2057 struct mbus_dram_target_info *dram)
2059 void __iomem *base = msp->base;
2064 for (i = 0; i < 6; i++) {
2065 writel(0, base + WINDOW_BASE(i));
2066 writel(0, base + WINDOW_SIZE(i));
2068 writel(0, base + WINDOW_REMAP_HIGH(i));
2074 for (i = 0; i < dram->num_cs; i++) {
2075 struct mbus_dram_window *cs = dram->cs + i;
2077 writel((cs->base & 0xffff0000) |
2078 (cs->mbus_attr << 8) |
2079 dram->mbus_dram_target_id, base + WINDOW_BASE(i));
2080 writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i));
2082 win_enable &= ~(1 << i);
2083 win_protect |= 3 << (2 * i);
2086 writel(win_enable, base + WINDOW_BAR_ENABLE);
2087 msp->win_protect = win_protect;
2090 static int mv643xx_eth_shared_probe(struct platform_device *pdev)
2092 static int mv643xx_eth_version_printed = 0;
2093 struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
2094 struct mv643xx_eth_shared_private *msp;
2095 struct resource *res;
2098 if (!mv643xx_eth_version_printed++)
2099 printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n");
2102 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2107 msp = kmalloc(sizeof(*msp), GFP_KERNEL);
2110 memset(msp, 0, sizeof(*msp));
2112 msp->base = ioremap(res->start, res->end - res->start + 1);
2113 if (msp->base == NULL)
2116 spin_lock_init(&msp->phy_lock);
2119 * (Re-)program MBUS remapping windows if we are asked to.
2121 if (pd != NULL && pd->dram != NULL)
2122 mv643xx_eth_conf_mbus_windows(msp, pd->dram);
2125 * Detect hardware parameters.
2127 msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
2129 platform_set_drvdata(pdev, msp);
2139 static int mv643xx_eth_shared_remove(struct platform_device *pdev)
2141 struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev);
2149 static struct platform_driver mv643xx_eth_shared_driver = {
2150 .probe = mv643xx_eth_shared_probe,
2151 .remove = mv643xx_eth_shared_remove,
2153 .name = MV643XX_ETH_SHARED_NAME,
2154 .owner = THIS_MODULE,
2158 static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr)
2160 int addr_shift = 5 * mp->port_num;
2163 data = rdl(mp, PHY_ADDR);
2164 data &= ~(0x1f << addr_shift);
2165 data |= (phy_addr & 0x1f) << addr_shift;
2166 wrl(mp, PHY_ADDR, data);
2169 static int phy_addr_get(struct mv643xx_eth_private *mp)
2173 data = rdl(mp, PHY_ADDR);
2175 return (data >> (5 * mp->port_num)) & 0x1f;
2178 static void set_params(struct mv643xx_eth_private *mp,
2179 struct mv643xx_eth_platform_data *pd)
2181 struct net_device *dev = mp->dev;
2183 if (is_valid_ether_addr(pd->mac_addr))
2184 memcpy(dev->dev_addr, pd->mac_addr, 6);
2186 uc_addr_get(mp, dev->dev_addr);
2188 if (pd->phy_addr == -1) {
2189 mp->shared_smi = NULL;
2192 mp->shared_smi = mp->shared;
2193 if (pd->shared_smi != NULL)
2194 mp->shared_smi = platform_get_drvdata(pd->shared_smi);
2196 if (pd->force_phy_addr || pd->phy_addr) {
2197 mp->phy_addr = pd->phy_addr & 0x3f;
2198 phy_addr_set(mp, mp->phy_addr);
2200 mp->phy_addr = phy_addr_get(mp);
2204 mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE;
2205 if (pd->rx_queue_size)
2206 mp->default_rx_ring_size = pd->rx_queue_size;
2207 mp->rx_desc_sram_addr = pd->rx_sram_addr;
2208 mp->rx_desc_sram_size = pd->rx_sram_size;
2210 if (pd->rx_queue_mask)
2211 mp->rxq_mask = pd->rx_queue_mask;
2213 mp->rxq_mask = 0x01;
2214 mp->rxq_primary = fls(mp->rxq_mask) - 1;
2216 mp->default_tx_ring_size = DEFAULT_TX_QUEUE_SIZE;
2217 if (pd->tx_queue_size)
2218 mp->default_tx_ring_size = pd->tx_queue_size;
2219 mp->tx_desc_sram_addr = pd->tx_sram_addr;
2220 mp->tx_desc_sram_size = pd->tx_sram_size;
2222 if (pd->tx_queue_mask)
2223 mp->txq_mask = pd->tx_queue_mask;
2225 mp->txq_mask = 0x01;
2226 mp->txq_primary = fls(mp->txq_mask) - 1;
2229 static int phy_detect(struct mv643xx_eth_private *mp)
2234 smi_reg_read(mp, mp->phy_addr, 0, &data);
2235 smi_reg_write(mp, mp->phy_addr, 0, data ^ 0x1000);
2237 smi_reg_read(mp, mp->phy_addr, 0, &data2);
2238 if (((data ^ data2) & 0x1000) == 0)
2241 smi_reg_write(mp, mp->phy_addr, 0, data);
2246 static int phy_init(struct mv643xx_eth_private *mp,
2247 struct mv643xx_eth_platform_data *pd)
2249 struct ethtool_cmd cmd;
2252 err = phy_detect(mp);
2254 dev_printk(KERN_INFO, &mp->dev->dev,
2255 "no PHY detected at addr %d\n", mp->phy_addr);
2260 mp->mii.phy_id = mp->phy_addr;
2261 mp->mii.phy_id_mask = 0x3f;
2262 mp->mii.reg_num_mask = 0x1f;
2263 mp->mii.dev = mp->dev;
2264 mp->mii.mdio_read = mv643xx_eth_mdio_read;
2265 mp->mii.mdio_write = mv643xx_eth_mdio_write;
2267 mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii);
2269 memset(&cmd, 0, sizeof(cmd));
2271 cmd.port = PORT_MII;
2272 cmd.transceiver = XCVR_INTERNAL;
2273 cmd.phy_address = mp->phy_addr;
2274 if (pd->speed == 0) {
2275 cmd.autoneg = AUTONEG_ENABLE;
2276 cmd.speed = SPEED_100;
2277 cmd.advertising = ADVERTISED_10baseT_Half |
2278 ADVERTISED_10baseT_Full |
2279 ADVERTISED_100baseT_Half |
2280 ADVERTISED_100baseT_Full;
2281 if (mp->mii.supports_gmii)
2282 cmd.advertising |= ADVERTISED_1000baseT_Full;
2284 cmd.autoneg = AUTONEG_DISABLE;
2285 cmd.speed = pd->speed;
2286 cmd.duplex = pd->duplex;
2289 update_pscr(mp, cmd.speed, cmd.duplex);
2290 mv643xx_eth_set_settings(mp->dev, &cmd);
2295 static int mv643xx_eth_probe(struct platform_device *pdev)
2297 struct mv643xx_eth_platform_data *pd;
2298 struct mv643xx_eth_private *mp;
2299 struct net_device *dev;
2300 struct resource *res;
2301 DECLARE_MAC_BUF(mac);
2304 pd = pdev->dev.platform_data;
2306 dev_printk(KERN_ERR, &pdev->dev,
2307 "no mv643xx_eth_platform_data\n");
2311 if (pd->shared == NULL) {
2312 dev_printk(KERN_ERR, &pdev->dev,
2313 "no mv643xx_eth_platform_data->shared\n");
2317 dev = alloc_etherdev(sizeof(struct mv643xx_eth_private));
2321 mp = netdev_priv(dev);
2322 platform_set_drvdata(pdev, mp);
2324 mp->shared = platform_get_drvdata(pd->shared);
2325 mp->port_num = pd->port_number;
2328 #ifdef MV643XX_ETH_NAPI
2329 netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 64);
2334 spin_lock_init(&mp->lock);
2336 mib_counters_clear(mp);
2337 INIT_WORK(&mp->tx_timeout_task, tx_timeout_task);
2339 err = phy_init(mp, pd);
2342 SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops);
2345 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2347 dev->irq = res->start;
2349 dev->hard_start_xmit = mv643xx_eth_xmit;
2350 dev->open = mv643xx_eth_open;
2351 dev->stop = mv643xx_eth_stop;
2352 dev->set_multicast_list = mv643xx_eth_set_rx_mode;
2353 dev->set_mac_address = mv643xx_eth_set_mac_address;
2354 dev->do_ioctl = mv643xx_eth_ioctl;
2355 dev->change_mtu = mv643xx_eth_change_mtu;
2356 dev->tx_timeout = mv643xx_eth_tx_timeout;
2357 #ifdef CONFIG_NET_POLL_CONTROLLER
2358 dev->poll_controller = mv643xx_eth_netpoll;
2360 dev->watchdog_timeo = 2 * HZ;
2363 #ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX
2365 * Zero copy can only work if we use Discovery II memory. Else, we will
2366 * have to map the buffers to ISA memory which is only 16 MB
2368 dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
2371 SET_NETDEV_DEV(dev, &pdev->dev);
2373 if (mp->shared->win_protect)
2374 wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect);
2376 err = register_netdev(dev);
2380 dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %s\n",
2381 mp->port_num, print_mac(mac, dev->dev_addr));
2383 if (dev->features & NETIF_F_SG)
2384 dev_printk(KERN_NOTICE, &dev->dev, "scatter/gather enabled\n");
2386 if (dev->features & NETIF_F_IP_CSUM)
2387 dev_printk(KERN_NOTICE, &dev->dev, "tx checksum offload\n");
2389 #ifdef MV643XX_ETH_NAPI
2390 dev_printk(KERN_NOTICE, &dev->dev, "napi enabled\n");
2393 if (mp->tx_desc_sram_size > 0)
2394 dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n");
2404 static int mv643xx_eth_remove(struct platform_device *pdev)
2406 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
2408 unregister_netdev(mp->dev);
2409 flush_scheduled_work();
2410 free_netdev(mp->dev);
2412 platform_set_drvdata(pdev, NULL);
2417 static void mv643xx_eth_shutdown(struct platform_device *pdev)
2419 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
2421 /* Mask all interrupts on ethernet port */
2422 wrl(mp, INT_MASK(mp->port_num), 0);
2423 rdl(mp, INT_MASK(mp->port_num));
2425 if (netif_running(mp->dev))
2429 static struct platform_driver mv643xx_eth_driver = {
2430 .probe = mv643xx_eth_probe,
2431 .remove = mv643xx_eth_remove,
2432 .shutdown = mv643xx_eth_shutdown,
2434 .name = MV643XX_ETH_NAME,
2435 .owner = THIS_MODULE,
2439 static int __init mv643xx_eth_init_module(void)
2443 rc = platform_driver_register(&mv643xx_eth_shared_driver);
2445 rc = platform_driver_register(&mv643xx_eth_driver);
2447 platform_driver_unregister(&mv643xx_eth_shared_driver);
2452 module_init(mv643xx_eth_init_module);
2454 static void __exit mv643xx_eth_cleanup_module(void)
2456 platform_driver_unregister(&mv643xx_eth_driver);
2457 platform_driver_unregister(&mv643xx_eth_shared_driver);
2459 module_exit(mv643xx_eth_cleanup_module);
2461 MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, Manish Lachwani "
2462 "and Dale Farnsworth");
2463 MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
2464 MODULE_LICENSE("GPL");
2465 MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME);
2466 MODULE_ALIAS("platform:" MV643XX_ETH_NAME);