1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Driver for Marvell Discovery (MV643XX) and Marvell Orion ethernet ports
6 * Based on the 64360 driver from:
10 * Copyright (C) 2003 PMC-Sierra, Inc.,
11 * written by Manish Lachwani
15 * Copyright (C) 2004-2006 MontaVista Software, Inc.
21 * Copyright (C) 2007-2008 Marvell Semiconductor
27 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
29 #include <linux/init.h>
30 #include <linux/dma-mapping.h>
34 #include <linux/tcp.h>
35 #include <linux/udp.h>
36 #include <linux/etherdevice.h>
37 #include <linux/delay.h>
38 #include <linux/ethtool.h>
39 #include <linux/platform_device.h>
40 #include <linux/module.h>
41 #include <linux/kernel.h>
42 #include <linux/spinlock.h>
43 #include <linux/workqueue.h>
44 #include <linux/phy.h>
45 #include <linux/mv643xx_eth.h>
47 #include <linux/interrupt.h>
48 #include <linux/types.h>
49 #include <linux/slab.h>
50 #include <linux/clk.h>
52 #include <linux/of_irq.h>
53 #include <linux/of_net.h>
54 #include <linux/of_mdio.h>
56 static char mv643xx_eth_driver_name[] = "mv643xx_eth";
57 static char mv643xx_eth_driver_version[] = "1.4";
61 * Registers shared between all ports.
63 #define PHY_ADDR 0x0000
64 #define WINDOW_BASE(w) (0x0200 + ((w) << 3))
65 #define WINDOW_SIZE(w) (0x0204 + ((w) << 3))
66 #define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2))
67 #define WINDOW_BAR_ENABLE 0x0290
68 #define WINDOW_PROTECT(w) (0x0294 + ((w) << 4))
71 * Main per-port registers. These live at offset 0x0400 for
72 * port #0, 0x0800 for port #1, and 0x0c00 for port #2.
74 #define PORT_CONFIG 0x0000
75 #define UNICAST_PROMISCUOUS_MODE 0x00000001
76 #define PORT_CONFIG_EXT 0x0004
77 #define MAC_ADDR_LOW 0x0014
78 #define MAC_ADDR_HIGH 0x0018
79 #define SDMA_CONFIG 0x001c
80 #define TX_BURST_SIZE_16_64BIT 0x01000000
81 #define TX_BURST_SIZE_4_64BIT 0x00800000
82 #define BLM_TX_NO_SWAP 0x00000020
83 #define BLM_RX_NO_SWAP 0x00000010
84 #define RX_BURST_SIZE_16_64BIT 0x00000008
85 #define RX_BURST_SIZE_4_64BIT 0x00000004
86 #define PORT_SERIAL_CONTROL 0x003c
87 #define SET_MII_SPEED_TO_100 0x01000000
88 #define SET_GMII_SPEED_TO_1000 0x00800000
89 #define SET_FULL_DUPLEX_MODE 0x00200000
90 #define MAX_RX_PACKET_9700BYTE 0x000a0000
91 #define DISABLE_AUTO_NEG_SPEED_GMII 0x00002000
92 #define DO_NOT_FORCE_LINK_FAIL 0x00000400
93 #define SERIAL_PORT_CONTROL_RESERVED 0x00000200
94 #define DISABLE_AUTO_NEG_FOR_FLOW_CTRL 0x00000008
95 #define DISABLE_AUTO_NEG_FOR_DUPLEX 0x00000004
96 #define FORCE_LINK_PASS 0x00000002
97 #define SERIAL_PORT_ENABLE 0x00000001
98 #define PORT_STATUS 0x0044
99 #define TX_FIFO_EMPTY 0x00000400
100 #define TX_IN_PROGRESS 0x00000080
101 #define PORT_SPEED_MASK 0x00000030
102 #define PORT_SPEED_1000 0x00000010
103 #define PORT_SPEED_100 0x00000020
104 #define PORT_SPEED_10 0x00000000
105 #define FLOW_CONTROL_ENABLED 0x00000008
106 #define FULL_DUPLEX 0x00000004
107 #define LINK_UP 0x00000002
108 #define TXQ_COMMAND 0x0048
109 #define TXQ_FIX_PRIO_CONF 0x004c
110 #define PORT_SERIAL_CONTROL1 0x004c
111 #define RGMII_EN 0x00000008
112 #define CLK125_BYPASS_EN 0x00000010
113 #define TX_BW_RATE 0x0050
114 #define TX_BW_MTU 0x0058
115 #define TX_BW_BURST 0x005c
116 #define INT_CAUSE 0x0060
117 #define INT_TX_END 0x07f80000
118 #define INT_TX_END_0 0x00080000
119 #define INT_RX 0x000003fc
120 #define INT_RX_0 0x00000004
121 #define INT_EXT 0x00000002
122 #define INT_CAUSE_EXT 0x0064
123 #define INT_EXT_LINK_PHY 0x00110000
124 #define INT_EXT_TX 0x000000ff
125 #define INT_MASK 0x0068
126 #define INT_MASK_EXT 0x006c
127 #define TX_FIFO_URGENT_THRESHOLD 0x0074
128 #define RX_DISCARD_FRAME_CNT 0x0084
129 #define RX_OVERRUN_FRAME_CNT 0x0088
130 #define TXQ_FIX_PRIO_CONF_MOVED 0x00dc
131 #define TX_BW_RATE_MOVED 0x00e0
132 #define TX_BW_MTU_MOVED 0x00e8
133 #define TX_BW_BURST_MOVED 0x00ec
134 #define RXQ_CURRENT_DESC_PTR(q) (0x020c + ((q) << 4))
135 #define RXQ_COMMAND 0x0280
136 #define TXQ_CURRENT_DESC_PTR(q) (0x02c0 + ((q) << 2))
137 #define TXQ_BW_TOKENS(q) (0x0300 + ((q) << 4))
138 #define TXQ_BW_CONF(q) (0x0304 + ((q) << 4))
139 #define TXQ_BW_WRR_CONF(q) (0x0308 + ((q) << 4))
142 * Misc per-port registers.
144 #define MIB_COUNTERS(p) (0x1000 + ((p) << 7))
145 #define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10))
146 #define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10))
147 #define UNICAST_TABLE(p) (0x1600 + ((p) << 10))
151 * SDMA configuration register default value.
153 #if defined(__BIG_ENDIAN)
154 #define PORT_SDMA_CONFIG_DEFAULT_VALUE \
155 (RX_BURST_SIZE_4_64BIT | \
156 TX_BURST_SIZE_4_64BIT)
157 #elif defined(__LITTLE_ENDIAN)
158 #define PORT_SDMA_CONFIG_DEFAULT_VALUE \
159 (RX_BURST_SIZE_4_64BIT | \
162 TX_BURST_SIZE_4_64BIT)
164 #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
171 #define DEFAULT_RX_QUEUE_SIZE 128
172 #define DEFAULT_TX_QUEUE_SIZE 512
173 #define SKB_DMA_REALIGN ((PAGE_SIZE - NET_SKB_PAD) % SMP_CACHE_BYTES)
175 /* Max number of allowed TCP segments for software TSO */
176 #define MV643XX_MAX_TSO_SEGS 100
177 #define MV643XX_MAX_SKB_DESCS (MV643XX_MAX_TSO_SEGS * 2 + MAX_SKB_FRAGS)
179 #define IS_TSO_HEADER(txq, addr) \
180 ((addr >= txq->tso_hdrs_dma) && \
181 (addr < txq->tso_hdrs_dma + txq->tx_ring_size * TSO_HEADER_SIZE))
183 #define DESC_DMA_MAP_SINGLE 0
184 #define DESC_DMA_MAP_PAGE 1
189 #if defined(__BIG_ENDIAN)
191 u16 byte_cnt; /* Descriptor buffer byte count */
192 u16 buf_size; /* Buffer size */
193 u32 cmd_sts; /* Descriptor command status */
194 u32 next_desc_ptr; /* Next descriptor pointer */
195 u32 buf_ptr; /* Descriptor buffer pointer */
199 u16 byte_cnt; /* buffer byte count */
200 u16 l4i_chk; /* CPU provided TCP checksum */
201 u32 cmd_sts; /* Command/status field */
202 u32 next_desc_ptr; /* Pointer to next descriptor */
203 u32 buf_ptr; /* pointer to buffer for this descriptor*/
205 #elif defined(__LITTLE_ENDIAN)
207 u32 cmd_sts; /* Descriptor command status */
208 u16 buf_size; /* Buffer size */
209 u16 byte_cnt; /* Descriptor buffer byte count */
210 u32 buf_ptr; /* Descriptor buffer pointer */
211 u32 next_desc_ptr; /* Next descriptor pointer */
215 u32 cmd_sts; /* Command/status field */
216 u16 l4i_chk; /* CPU provided TCP checksum */
217 u16 byte_cnt; /* buffer byte count */
218 u32 buf_ptr; /* pointer to buffer for this descriptor*/
219 u32 next_desc_ptr; /* Pointer to next descriptor */
222 #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
225 /* RX & TX descriptor command */
226 #define BUFFER_OWNED_BY_DMA 0x80000000
228 /* RX & TX descriptor status */
229 #define ERROR_SUMMARY 0x00000001
231 /* RX descriptor status */
232 #define LAYER_4_CHECKSUM_OK 0x40000000
233 #define RX_ENABLE_INTERRUPT 0x20000000
234 #define RX_FIRST_DESC 0x08000000
235 #define RX_LAST_DESC 0x04000000
236 #define RX_IP_HDR_OK 0x02000000
237 #define RX_PKT_IS_IPV4 0x01000000
238 #define RX_PKT_IS_ETHERNETV2 0x00800000
239 #define RX_PKT_LAYER4_TYPE_MASK 0x00600000
240 #define RX_PKT_LAYER4_TYPE_TCP_IPV4 0x00000000
241 #define RX_PKT_IS_VLAN_TAGGED 0x00080000
243 /* TX descriptor command */
244 #define TX_ENABLE_INTERRUPT 0x00800000
245 #define GEN_CRC 0x00400000
246 #define TX_FIRST_DESC 0x00200000
247 #define TX_LAST_DESC 0x00100000
248 #define ZERO_PADDING 0x00080000
249 #define GEN_IP_V4_CHECKSUM 0x00040000
250 #define GEN_TCP_UDP_CHECKSUM 0x00020000
251 #define UDP_FRAME 0x00010000
252 #define MAC_HDR_EXTRA_4_BYTES 0x00008000
253 #define GEN_TCP_UDP_CHK_FULL 0x00000400
254 #define MAC_HDR_EXTRA_8_BYTES 0x00000200
256 #define TX_IHL_SHIFT 11
259 /* global *******************************************************************/
260 struct mv643xx_eth_shared_private {
262 * Ethernet controller base address.
267 * Per-port MBUS window access register value.
272 * Hardware-specific parameters.
274 int extended_rx_coal_limit;
280 #define TX_BW_CONTROL_ABSENT 0
281 #define TX_BW_CONTROL_OLD_LAYOUT 1
282 #define TX_BW_CONTROL_NEW_LAYOUT 2
284 static int mv643xx_eth_open(struct net_device *dev);
285 static int mv643xx_eth_stop(struct net_device *dev);
288 /* per-port *****************************************************************/
289 struct mib_counters {
290 u64 good_octets_received;
291 u32 bad_octets_received;
292 u32 internal_mac_transmit_err;
293 u32 good_frames_received;
294 u32 bad_frames_received;
295 u32 broadcast_frames_received;
296 u32 multicast_frames_received;
297 u32 frames_64_octets;
298 u32 frames_65_to_127_octets;
299 u32 frames_128_to_255_octets;
300 u32 frames_256_to_511_octets;
301 u32 frames_512_to_1023_octets;
302 u32 frames_1024_to_max_octets;
303 u64 good_octets_sent;
304 u32 good_frames_sent;
305 u32 excessive_collision;
306 u32 multicast_frames_sent;
307 u32 broadcast_frames_sent;
308 u32 unrec_mac_control_received;
310 u32 good_fc_received;
312 u32 undersize_received;
313 u32 fragments_received;
314 u32 oversize_received;
316 u32 mac_receive_error;
320 /* Non MIB hardware counters */
334 struct rx_desc *rx_desc_area;
335 dma_addr_t rx_desc_dma;
336 int rx_desc_area_size;
337 struct sk_buff **rx_skb;
349 int tx_stop_threshold;
350 int tx_wake_threshold;
353 dma_addr_t tso_hdrs_dma;
355 struct tx_desc *tx_desc_area;
356 char *tx_desc_mapping; /* array to track the type of the dma mapping */
357 dma_addr_t tx_desc_dma;
358 int tx_desc_area_size;
360 struct sk_buff_head tx_skb;
362 unsigned long tx_packets;
363 unsigned long tx_bytes;
364 unsigned long tx_dropped;
367 struct mv643xx_eth_private {
368 struct mv643xx_eth_shared_private *shared;
372 struct net_device *dev;
374 struct timer_list mib_counters_timer;
375 spinlock_t mib_counters_lock;
376 struct mib_counters mib_counters;
378 struct work_struct tx_timeout_task;
380 struct napi_struct napi;
395 unsigned long rx_desc_sram_addr;
396 int rx_desc_sram_size;
398 struct timer_list rx_oom;
399 struct rx_queue rxq[8];
405 unsigned long tx_desc_sram_addr;
406 int tx_desc_sram_size;
408 struct tx_queue txq[8];
411 * Hardware-specific parameters.
418 /* port register accessors **************************************************/
419 static inline u32 rdl(struct mv643xx_eth_private *mp, int offset)
421 return readl(mp->shared->base + offset);
424 static inline u32 rdlp(struct mv643xx_eth_private *mp, int offset)
426 return readl(mp->base + offset);
429 static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data)
431 writel(data, mp->shared->base + offset);
434 static inline void wrlp(struct mv643xx_eth_private *mp, int offset, u32 data)
436 writel(data, mp->base + offset);
440 /* rxq/txq helper functions *************************************************/
441 static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq)
443 return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]);
446 static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq)
448 return container_of(txq, struct mv643xx_eth_private, txq[txq->index]);
451 static void rxq_enable(struct rx_queue *rxq)
453 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
454 wrlp(mp, RXQ_COMMAND, 1 << rxq->index);
457 static void rxq_disable(struct rx_queue *rxq)
459 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
460 u8 mask = 1 << rxq->index;
462 wrlp(mp, RXQ_COMMAND, mask << 8);
463 while (rdlp(mp, RXQ_COMMAND) & mask)
467 static void txq_reset_hw_ptr(struct tx_queue *txq)
469 struct mv643xx_eth_private *mp = txq_to_mp(txq);
472 addr = (u32)txq->tx_desc_dma;
473 addr += txq->tx_curr_desc * sizeof(struct tx_desc);
474 wrlp(mp, TXQ_CURRENT_DESC_PTR(txq->index), addr);
477 static void txq_enable(struct tx_queue *txq)
479 struct mv643xx_eth_private *mp = txq_to_mp(txq);
480 wrlp(mp, TXQ_COMMAND, 1 << txq->index);
483 static void txq_disable(struct tx_queue *txq)
485 struct mv643xx_eth_private *mp = txq_to_mp(txq);
486 u8 mask = 1 << txq->index;
488 wrlp(mp, TXQ_COMMAND, mask << 8);
489 while (rdlp(mp, TXQ_COMMAND) & mask)
493 static void txq_maybe_wake(struct tx_queue *txq)
495 struct mv643xx_eth_private *mp = txq_to_mp(txq);
496 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
498 if (netif_tx_queue_stopped(nq)) {
499 __netif_tx_lock(nq, smp_processor_id());
500 if (txq->tx_desc_count <= txq->tx_wake_threshold)
501 netif_tx_wake_queue(nq);
502 __netif_tx_unlock(nq);
506 static int rxq_process(struct rx_queue *rxq, int budget)
508 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
509 struct net_device_stats *stats = &mp->dev->stats;
513 while (rx < budget && rxq->rx_desc_count) {
514 struct rx_desc *rx_desc;
515 unsigned int cmd_sts;
519 rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc];
521 cmd_sts = rx_desc->cmd_sts;
522 if (cmd_sts & BUFFER_OWNED_BY_DMA)
526 skb = rxq->rx_skb[rxq->rx_curr_desc];
527 rxq->rx_skb[rxq->rx_curr_desc] = NULL;
530 if (rxq->rx_curr_desc == rxq->rx_ring_size)
531 rxq->rx_curr_desc = 0;
533 dma_unmap_single(mp->dev->dev.parent, rx_desc->buf_ptr,
534 rx_desc->buf_size, DMA_FROM_DEVICE);
535 rxq->rx_desc_count--;
538 mp->work_rx_refill |= 1 << rxq->index;
540 byte_cnt = rx_desc->byte_cnt;
545 * Note that the descriptor byte count includes 2 dummy
546 * bytes automatically inserted by the hardware at the
547 * start of the packet (which we don't count), and a 4
548 * byte CRC at the end of the packet (which we do count).
551 stats->rx_bytes += byte_cnt - 2;
554 * In case we received a packet without first / last bits
555 * on, or the error summary bit is set, the packet needs
558 if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC | ERROR_SUMMARY))
559 != (RX_FIRST_DESC | RX_LAST_DESC))
563 * The -4 is for the CRC in the trailer of the
566 skb_put(skb, byte_cnt - 2 - 4);
568 if (cmd_sts & LAYER_4_CHECKSUM_OK)
569 skb->ip_summed = CHECKSUM_UNNECESSARY;
570 skb->protocol = eth_type_trans(skb, mp->dev);
572 napi_gro_receive(&mp->napi, skb);
579 if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
580 (RX_FIRST_DESC | RX_LAST_DESC)) {
583 "received packet spanning multiple descriptors\n");
586 if (cmd_sts & ERROR_SUMMARY)
593 mp->work_rx &= ~(1 << rxq->index);
598 static int rxq_refill(struct rx_queue *rxq, int budget)
600 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
604 while (refilled < budget && rxq->rx_desc_count < rxq->rx_ring_size) {
607 struct rx_desc *rx_desc;
610 skb = netdev_alloc_skb(mp->dev, mp->skb_size);
618 skb_reserve(skb, SKB_DMA_REALIGN);
621 rxq->rx_desc_count++;
623 rx = rxq->rx_used_desc++;
624 if (rxq->rx_used_desc == rxq->rx_ring_size)
625 rxq->rx_used_desc = 0;
627 rx_desc = rxq->rx_desc_area + rx;
629 size = skb_end_pointer(skb) - skb->data;
630 rx_desc->buf_ptr = dma_map_single(mp->dev->dev.parent,
633 rx_desc->buf_size = size;
634 rxq->rx_skb[rx] = skb;
636 rx_desc->cmd_sts = BUFFER_OWNED_BY_DMA | RX_ENABLE_INTERRUPT;
640 * The hardware automatically prepends 2 bytes of
641 * dummy data to each received packet, so that the
642 * IP header ends up 16-byte aligned.
647 if (refilled < budget)
648 mp->work_rx_refill &= ~(1 << rxq->index);
655 /* tx ***********************************************************************/
656 static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
660 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
661 const skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag];
663 if (skb_frag_size(fragp) <= 8 && skb_frag_off(fragp) & 7)
670 static int skb_tx_csum(struct mv643xx_eth_private *mp, struct sk_buff *skb,
671 u16 *l4i_chk, u32 *command, int length)
676 if (skb->ip_summed == CHECKSUM_PARTIAL) {
680 BUG_ON(skb->protocol != htons(ETH_P_IP) &&
681 skb->protocol != htons(ETH_P_8021Q));
683 hdr_len = (void *)ip_hdr(skb) - (void *)skb->data;
684 tag_bytes = hdr_len - ETH_HLEN;
686 if (length - hdr_len > mp->shared->tx_csum_limit ||
687 unlikely(tag_bytes & ~12)) {
688 ret = skb_checksum_help(skb);
695 cmd |= MAC_HDR_EXTRA_4_BYTES;
697 cmd |= MAC_HDR_EXTRA_8_BYTES;
699 cmd |= GEN_TCP_UDP_CHECKSUM | GEN_TCP_UDP_CHK_FULL |
701 ip_hdr(skb)->ihl << TX_IHL_SHIFT;
703 /* TODO: Revisit this. With the usage of GEN_TCP_UDP_CHK_FULL
704 * it seems we don't need to pass the initial checksum.
706 switch (ip_hdr(skb)->protocol) {
715 WARN(1, "protocol not supported");
719 /* Errata BTS #50, IHL must be 5 if no HW checksum */
720 cmd |= 5 << TX_IHL_SHIFT;
727 txq_put_data_tso(struct net_device *dev, struct tx_queue *txq,
728 struct sk_buff *skb, char *data, int length,
729 bool last_tcp, bool is_last)
733 struct tx_desc *desc;
735 tx_index = txq->tx_curr_desc++;
736 if (txq->tx_curr_desc == txq->tx_ring_size)
737 txq->tx_curr_desc = 0;
738 desc = &txq->tx_desc_area[tx_index];
739 txq->tx_desc_mapping[tx_index] = DESC_DMA_MAP_SINGLE;
742 desc->byte_cnt = length;
744 if (length <= 8 && (uintptr_t)data & 0x7) {
745 /* Copy unaligned small data fragment to TSO header data area */
746 memcpy(txq->tso_hdrs + tx_index * TSO_HEADER_SIZE,
748 desc->buf_ptr = txq->tso_hdrs_dma
749 + tx_index * TSO_HEADER_SIZE;
751 /* Alignment is okay, map buffer and hand off to hardware */
752 txq->tx_desc_mapping[tx_index] = DESC_DMA_MAP_SINGLE;
753 desc->buf_ptr = dma_map_single(dev->dev.parent, data,
754 length, DMA_TO_DEVICE);
755 if (unlikely(dma_mapping_error(dev->dev.parent,
757 WARN(1, "dma_map_single failed!\n");
762 cmd_sts = BUFFER_OWNED_BY_DMA;
764 /* last descriptor in the TCP packet */
765 cmd_sts |= ZERO_PADDING | TX_LAST_DESC;
766 /* last descriptor in SKB */
768 cmd_sts |= TX_ENABLE_INTERRUPT;
770 desc->cmd_sts = cmd_sts;
775 txq_put_hdr_tso(struct sk_buff *skb, struct tx_queue *txq, int length,
776 u32 *first_cmd_sts, bool first_desc)
778 struct mv643xx_eth_private *mp = txq_to_mp(txq);
779 int hdr_len = skb_tcp_all_headers(skb);
781 struct tx_desc *desc;
787 tx_index = txq->tx_curr_desc;
788 desc = &txq->tx_desc_area[tx_index];
790 ret = skb_tx_csum(mp, skb, &l4i_chk, &cmd_csum, length);
792 WARN(1, "failed to prepare checksum!");
794 /* Should we set this? Can't use the value from skb_tx_csum()
795 * as it's not the correct initial L4 checksum to use.
799 desc->byte_cnt = hdr_len;
800 desc->buf_ptr = txq->tso_hdrs_dma +
801 txq->tx_curr_desc * TSO_HEADER_SIZE;
802 cmd_sts = cmd_csum | BUFFER_OWNED_BY_DMA | TX_FIRST_DESC |
805 /* Defer updating the first command descriptor until all
806 * following descriptors have been written.
809 *first_cmd_sts = cmd_sts;
811 desc->cmd_sts = cmd_sts;
814 if (txq->tx_curr_desc == txq->tx_ring_size)
815 txq->tx_curr_desc = 0;
818 static int txq_submit_tso(struct tx_queue *txq, struct sk_buff *skb,
819 struct net_device *dev)
821 struct mv643xx_eth_private *mp = txq_to_mp(txq);
822 int hdr_len, total_len, data_left, ret;
825 struct tx_desc *first_tx_desc;
826 u32 first_cmd_sts = 0;
828 /* Count needed descriptors */
829 if ((txq->tx_desc_count + tso_count_descs(skb)) >= txq->tx_ring_size) {
830 netdev_dbg(dev, "not enough descriptors for TSO!\n");
834 first_tx_desc = &txq->tx_desc_area[txq->tx_curr_desc];
836 /* Initialize the TSO handler, and prepare the first payload */
837 hdr_len = tso_start(skb, &tso);
839 total_len = skb->len - hdr_len;
840 while (total_len > 0) {
841 bool first_desc = (desc_count == 0);
844 data_left = min_t(int, skb_shinfo(skb)->gso_size, total_len);
845 total_len -= data_left;
848 /* prepare packet headers: MAC + IP + TCP */
849 hdr = txq->tso_hdrs + txq->tx_curr_desc * TSO_HEADER_SIZE;
850 tso_build_hdr(skb, hdr, &tso, data_left, total_len == 0);
851 txq_put_hdr_tso(skb, txq, data_left, &first_cmd_sts,
854 while (data_left > 0) {
858 size = min_t(int, tso.size, data_left);
859 ret = txq_put_data_tso(dev, txq, skb, tso.data, size,
865 tso_build_data(skb, &tso, size);
869 __skb_queue_tail(&txq->tx_skb, skb);
870 skb_tx_timestamp(skb);
872 /* ensure all other descriptors are written before first cmd_sts */
874 first_tx_desc->cmd_sts = first_cmd_sts;
876 /* clear TX_END status */
877 mp->work_tx_end &= ~(1 << txq->index);
879 /* ensure all descriptors are written before poking hardware */
882 txq->tx_desc_count += desc_count;
885 /* TODO: Release all used data descriptors; header descriptors must not
891 static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb)
893 struct mv643xx_eth_private *mp = txq_to_mp(txq);
894 int nr_frags = skb_shinfo(skb)->nr_frags;
897 for (frag = 0; frag < nr_frags; frag++) {
898 skb_frag_t *this_frag;
900 struct tx_desc *desc;
902 this_frag = &skb_shinfo(skb)->frags[frag];
903 tx_index = txq->tx_curr_desc++;
904 if (txq->tx_curr_desc == txq->tx_ring_size)
905 txq->tx_curr_desc = 0;
906 desc = &txq->tx_desc_area[tx_index];
907 txq->tx_desc_mapping[tx_index] = DESC_DMA_MAP_PAGE;
910 * The last fragment will generate an interrupt
911 * which will free the skb on TX completion.
913 if (frag == nr_frags - 1) {
914 desc->cmd_sts = BUFFER_OWNED_BY_DMA |
915 ZERO_PADDING | TX_LAST_DESC |
918 desc->cmd_sts = BUFFER_OWNED_BY_DMA;
922 desc->byte_cnt = skb_frag_size(this_frag);
923 desc->buf_ptr = skb_frag_dma_map(mp->dev->dev.parent,
924 this_frag, 0, desc->byte_cnt,
929 static int txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb,
930 struct net_device *dev)
932 struct mv643xx_eth_private *mp = txq_to_mp(txq);
933 int nr_frags = skb_shinfo(skb)->nr_frags;
935 struct tx_desc *desc;
943 if (txq->tx_ring_size - txq->tx_desc_count < MAX_SKB_FRAGS + 1) {
945 netdev_err(dev, "tx queue full?!\n");
949 ret = skb_tx_csum(mp, skb, &l4i_chk, &cmd_sts, skb->len);
952 cmd_sts |= TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA;
954 tx_index = txq->tx_curr_desc++;
955 if (txq->tx_curr_desc == txq->tx_ring_size)
956 txq->tx_curr_desc = 0;
957 desc = &txq->tx_desc_area[tx_index];
958 txq->tx_desc_mapping[tx_index] = DESC_DMA_MAP_SINGLE;
961 txq_submit_frag_skb(txq, skb);
962 length = skb_headlen(skb);
964 cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT;
968 desc->l4i_chk = l4i_chk;
969 desc->byte_cnt = length;
970 desc->buf_ptr = dma_map_single(mp->dev->dev.parent, skb->data,
971 length, DMA_TO_DEVICE);
973 __skb_queue_tail(&txq->tx_skb, skb);
975 skb_tx_timestamp(skb);
977 /* ensure all other descriptors are written before first cmd_sts */
979 desc->cmd_sts = cmd_sts;
981 /* clear TX_END status */
982 mp->work_tx_end &= ~(1 << txq->index);
984 /* ensure all descriptors are written before poking hardware */
988 txq->tx_desc_count += nr_frags + 1;
993 static netdev_tx_t mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev)
995 struct mv643xx_eth_private *mp = netdev_priv(dev);
996 int length, queue, ret;
997 struct tx_queue *txq;
998 struct netdev_queue *nq;
1000 queue = skb_get_queue_mapping(skb);
1001 txq = mp->txq + queue;
1002 nq = netdev_get_tx_queue(dev, queue);
1004 if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) {
1005 netdev_printk(KERN_DEBUG, dev,
1006 "failed to linearize skb with tiny unaligned fragment\n");
1007 return NETDEV_TX_BUSY;
1012 if (skb_is_gso(skb))
1013 ret = txq_submit_tso(txq, skb, dev);
1015 ret = txq_submit_skb(txq, skb, dev);
1017 txq->tx_bytes += length;
1020 if (txq->tx_desc_count >= txq->tx_stop_threshold)
1021 netif_tx_stop_queue(nq);
1024 dev_kfree_skb_any(skb);
1027 return NETDEV_TX_OK;
1031 /* tx napi ******************************************************************/
1032 static void txq_kick(struct tx_queue *txq)
1034 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1035 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
1039 __netif_tx_lock(nq, smp_processor_id());
1041 if (rdlp(mp, TXQ_COMMAND) & (1 << txq->index))
1044 hw_desc_ptr = rdlp(mp, TXQ_CURRENT_DESC_PTR(txq->index));
1045 expected_ptr = (u32)txq->tx_desc_dma +
1046 txq->tx_curr_desc * sizeof(struct tx_desc);
1048 if (hw_desc_ptr != expected_ptr)
1052 __netif_tx_unlock(nq);
1054 mp->work_tx_end &= ~(1 << txq->index);
1057 static int txq_reclaim(struct tx_queue *txq, int budget, int force)
1059 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1060 struct netdev_queue *nq = netdev_get_tx_queue(mp->dev, txq->index);
1063 __netif_tx_lock_bh(nq);
1066 while (reclaimed < budget && txq->tx_desc_count > 0) {
1068 struct tx_desc *desc;
1072 tx_index = txq->tx_used_desc;
1073 desc = &txq->tx_desc_area[tx_index];
1074 desc_dma_map = txq->tx_desc_mapping[tx_index];
1076 cmd_sts = desc->cmd_sts;
1078 if (cmd_sts & BUFFER_OWNED_BY_DMA) {
1081 desc->cmd_sts = cmd_sts & ~BUFFER_OWNED_BY_DMA;
1084 txq->tx_used_desc = tx_index + 1;
1085 if (txq->tx_used_desc == txq->tx_ring_size)
1086 txq->tx_used_desc = 0;
1089 txq->tx_desc_count--;
1091 if (!IS_TSO_HEADER(txq, desc->buf_ptr)) {
1093 if (desc_dma_map == DESC_DMA_MAP_PAGE)
1094 dma_unmap_page(mp->dev->dev.parent,
1099 dma_unmap_single(mp->dev->dev.parent,
1105 if (cmd_sts & TX_ENABLE_INTERRUPT) {
1106 struct sk_buff *skb = __skb_dequeue(&txq->tx_skb);
1109 dev_consume_skb_any(skb);
1112 if (cmd_sts & ERROR_SUMMARY) {
1113 netdev_info(mp->dev, "tx error\n");
1114 mp->dev->stats.tx_errors++;
1119 __netif_tx_unlock_bh(nq);
1121 if (reclaimed < budget)
1122 mp->work_tx &= ~(1 << txq->index);
1128 /* tx rate control **********************************************************/
1130 * Set total maximum TX rate (shared by all TX queues for this port)
1131 * to 'rate' bits per second, with a maximum burst of 'burst' bytes.
1133 static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst)
1139 token_rate = ((rate / 1000) * 64) / (mp->t_clk / 1000);
1140 if (token_rate > 1023)
1143 mtu = (mp->dev->mtu + 255) >> 8;
1147 bucket_size = (burst + 255) >> 8;
1148 if (bucket_size > 65535)
1149 bucket_size = 65535;
1151 switch (mp->shared->tx_bw_control) {
1152 case TX_BW_CONTROL_OLD_LAYOUT:
1153 wrlp(mp, TX_BW_RATE, token_rate);
1154 wrlp(mp, TX_BW_MTU, mtu);
1155 wrlp(mp, TX_BW_BURST, bucket_size);
1157 case TX_BW_CONTROL_NEW_LAYOUT:
1158 wrlp(mp, TX_BW_RATE_MOVED, token_rate);
1159 wrlp(mp, TX_BW_MTU_MOVED, mtu);
1160 wrlp(mp, TX_BW_BURST_MOVED, bucket_size);
1165 static void txq_set_rate(struct tx_queue *txq, int rate, int burst)
1167 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1171 token_rate = ((rate / 1000) * 64) / (mp->t_clk / 1000);
1172 if (token_rate > 1023)
1175 bucket_size = (burst + 255) >> 8;
1176 if (bucket_size > 65535)
1177 bucket_size = 65535;
1179 wrlp(mp, TXQ_BW_TOKENS(txq->index), token_rate << 14);
1180 wrlp(mp, TXQ_BW_CONF(txq->index), (bucket_size << 10) | token_rate);
1183 static void txq_set_fixed_prio_mode(struct tx_queue *txq)
1185 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1190 * Turn on fixed priority mode.
1193 switch (mp->shared->tx_bw_control) {
1194 case TX_BW_CONTROL_OLD_LAYOUT:
1195 off = TXQ_FIX_PRIO_CONF;
1197 case TX_BW_CONTROL_NEW_LAYOUT:
1198 off = TXQ_FIX_PRIO_CONF_MOVED;
1203 val = rdlp(mp, off);
1204 val |= 1 << txq->index;
1210 /* mii management interface *************************************************/
1211 static void mv643xx_eth_adjust_link(struct net_device *dev)
1213 struct mv643xx_eth_private *mp = netdev_priv(dev);
1214 u32 pscr = rdlp(mp, PORT_SERIAL_CONTROL);
1215 u32 autoneg_disable = FORCE_LINK_PASS |
1216 DISABLE_AUTO_NEG_SPEED_GMII |
1217 DISABLE_AUTO_NEG_FOR_FLOW_CTRL |
1218 DISABLE_AUTO_NEG_FOR_DUPLEX;
1220 if (dev->phydev->autoneg == AUTONEG_ENABLE) {
1221 /* enable auto negotiation */
1222 pscr &= ~autoneg_disable;
1226 pscr |= autoneg_disable;
1228 if (dev->phydev->speed == SPEED_1000) {
1229 /* force gigabit, half duplex not supported */
1230 pscr |= SET_GMII_SPEED_TO_1000;
1231 pscr |= SET_FULL_DUPLEX_MODE;
1235 pscr &= ~SET_GMII_SPEED_TO_1000;
1237 if (dev->phydev->speed == SPEED_100)
1238 pscr |= SET_MII_SPEED_TO_100;
1240 pscr &= ~SET_MII_SPEED_TO_100;
1242 if (dev->phydev->duplex == DUPLEX_FULL)
1243 pscr |= SET_FULL_DUPLEX_MODE;
1245 pscr &= ~SET_FULL_DUPLEX_MODE;
1248 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
1251 /* statistics ***************************************************************/
1252 static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *dev)
1254 struct mv643xx_eth_private *mp = netdev_priv(dev);
1255 struct net_device_stats *stats = &dev->stats;
1256 unsigned long tx_packets = 0;
1257 unsigned long tx_bytes = 0;
1258 unsigned long tx_dropped = 0;
1261 for (i = 0; i < mp->txq_count; i++) {
1262 struct tx_queue *txq = mp->txq + i;
1264 tx_packets += txq->tx_packets;
1265 tx_bytes += txq->tx_bytes;
1266 tx_dropped += txq->tx_dropped;
1269 stats->tx_packets = tx_packets;
1270 stats->tx_bytes = tx_bytes;
1271 stats->tx_dropped = tx_dropped;
1276 static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset)
1278 return rdl(mp, MIB_COUNTERS(mp->port_num) + offset);
1281 static void mib_counters_clear(struct mv643xx_eth_private *mp)
1285 for (i = 0; i < 0x80; i += 4)
1288 /* Clear non MIB hw counters also */
1289 rdlp(mp, RX_DISCARD_FRAME_CNT);
1290 rdlp(mp, RX_OVERRUN_FRAME_CNT);
1293 static void mib_counters_update(struct mv643xx_eth_private *mp)
1295 struct mib_counters *p = &mp->mib_counters;
1297 spin_lock_bh(&mp->mib_counters_lock);
1298 p->good_octets_received += mib_read(mp, 0x00);
1299 p->bad_octets_received += mib_read(mp, 0x08);
1300 p->internal_mac_transmit_err += mib_read(mp, 0x0c);
1301 p->good_frames_received += mib_read(mp, 0x10);
1302 p->bad_frames_received += mib_read(mp, 0x14);
1303 p->broadcast_frames_received += mib_read(mp, 0x18);
1304 p->multicast_frames_received += mib_read(mp, 0x1c);
1305 p->frames_64_octets += mib_read(mp, 0x20);
1306 p->frames_65_to_127_octets += mib_read(mp, 0x24);
1307 p->frames_128_to_255_octets += mib_read(mp, 0x28);
1308 p->frames_256_to_511_octets += mib_read(mp, 0x2c);
1309 p->frames_512_to_1023_octets += mib_read(mp, 0x30);
1310 p->frames_1024_to_max_octets += mib_read(mp, 0x34);
1311 p->good_octets_sent += mib_read(mp, 0x38);
1312 p->good_frames_sent += mib_read(mp, 0x40);
1313 p->excessive_collision += mib_read(mp, 0x44);
1314 p->multicast_frames_sent += mib_read(mp, 0x48);
1315 p->broadcast_frames_sent += mib_read(mp, 0x4c);
1316 p->unrec_mac_control_received += mib_read(mp, 0x50);
1317 p->fc_sent += mib_read(mp, 0x54);
1318 p->good_fc_received += mib_read(mp, 0x58);
1319 p->bad_fc_received += mib_read(mp, 0x5c);
1320 p->undersize_received += mib_read(mp, 0x60);
1321 p->fragments_received += mib_read(mp, 0x64);
1322 p->oversize_received += mib_read(mp, 0x68);
1323 p->jabber_received += mib_read(mp, 0x6c);
1324 p->mac_receive_error += mib_read(mp, 0x70);
1325 p->bad_crc_event += mib_read(mp, 0x74);
1326 p->collision += mib_read(mp, 0x78);
1327 p->late_collision += mib_read(mp, 0x7c);
1328 /* Non MIB hardware counters */
1329 p->rx_discard += rdlp(mp, RX_DISCARD_FRAME_CNT);
1330 p->rx_overrun += rdlp(mp, RX_OVERRUN_FRAME_CNT);
1331 spin_unlock_bh(&mp->mib_counters_lock);
1334 static void mib_counters_timer_wrapper(struct timer_list *t)
1336 struct mv643xx_eth_private *mp = from_timer(mp, t, mib_counters_timer);
1337 mib_counters_update(mp);
1338 mod_timer(&mp->mib_counters_timer, jiffies + 30 * HZ);
1342 /* interrupt coalescing *****************************************************/
1344 * Hardware coalescing parameters are set in units of 64 t_clk
1347 * coal_delay_in_usec = 64000000 * register_value / t_clk_rate
1349 * register_value = coal_delay_in_usec * t_clk_rate / 64000000
1351 * In the ->set*() methods, we round the computed register value
1352 * to the nearest integer.
1354 static unsigned int get_rx_coal(struct mv643xx_eth_private *mp)
1356 u32 val = rdlp(mp, SDMA_CONFIG);
1359 if (mp->shared->extended_rx_coal_limit)
1360 temp = ((val & 0x02000000) >> 10) | ((val & 0x003fff80) >> 7);
1362 temp = (val & 0x003fff00) >> 8;
1365 temp += mp->t_clk / 2;
1366 do_div(temp, mp->t_clk);
1368 return (unsigned int)temp;
1371 static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int usec)
1376 temp = (u64)usec * mp->t_clk;
1378 do_div(temp, 64000000);
1380 val = rdlp(mp, SDMA_CONFIG);
1381 if (mp->shared->extended_rx_coal_limit) {
1385 val |= (temp & 0x8000) << 10;
1386 val |= (temp & 0x7fff) << 7;
1391 val |= (temp & 0x3fff) << 8;
1393 wrlp(mp, SDMA_CONFIG, val);
1396 static unsigned int get_tx_coal(struct mv643xx_eth_private *mp)
1400 temp = (rdlp(mp, TX_FIFO_URGENT_THRESHOLD) & 0x3fff0) >> 4;
1402 temp += mp->t_clk / 2;
1403 do_div(temp, mp->t_clk);
1405 return (unsigned int)temp;
1408 static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int usec)
1412 temp = (u64)usec * mp->t_clk;
1414 do_div(temp, 64000000);
1419 wrlp(mp, TX_FIFO_URGENT_THRESHOLD, temp << 4);
1423 /* ethtool ******************************************************************/
1424 struct mv643xx_eth_stats {
1425 char stat_string[ETH_GSTRING_LEN];
1432 { #m, sizeof_field(struct net_device_stats, m), \
1433 offsetof(struct net_device, stats.m), -1 }
1435 #define MIBSTAT(m) \
1436 { #m, sizeof_field(struct mib_counters, m), \
1437 -1, offsetof(struct mv643xx_eth_private, mib_counters.m) }
1439 static const struct mv643xx_eth_stats mv643xx_eth_stats[] = {
1448 MIBSTAT(good_octets_received),
1449 MIBSTAT(bad_octets_received),
1450 MIBSTAT(internal_mac_transmit_err),
1451 MIBSTAT(good_frames_received),
1452 MIBSTAT(bad_frames_received),
1453 MIBSTAT(broadcast_frames_received),
1454 MIBSTAT(multicast_frames_received),
1455 MIBSTAT(frames_64_octets),
1456 MIBSTAT(frames_65_to_127_octets),
1457 MIBSTAT(frames_128_to_255_octets),
1458 MIBSTAT(frames_256_to_511_octets),
1459 MIBSTAT(frames_512_to_1023_octets),
1460 MIBSTAT(frames_1024_to_max_octets),
1461 MIBSTAT(good_octets_sent),
1462 MIBSTAT(good_frames_sent),
1463 MIBSTAT(excessive_collision),
1464 MIBSTAT(multicast_frames_sent),
1465 MIBSTAT(broadcast_frames_sent),
1466 MIBSTAT(unrec_mac_control_received),
1468 MIBSTAT(good_fc_received),
1469 MIBSTAT(bad_fc_received),
1470 MIBSTAT(undersize_received),
1471 MIBSTAT(fragments_received),
1472 MIBSTAT(oversize_received),
1473 MIBSTAT(jabber_received),
1474 MIBSTAT(mac_receive_error),
1475 MIBSTAT(bad_crc_event),
1477 MIBSTAT(late_collision),
1478 MIBSTAT(rx_discard),
1479 MIBSTAT(rx_overrun),
1483 mv643xx_eth_get_link_ksettings_phy(struct mv643xx_eth_private *mp,
1484 struct ethtool_link_ksettings *cmd)
1486 struct net_device *dev = mp->dev;
1488 phy_ethtool_ksettings_get(dev->phydev, cmd);
1491 * The MAC does not support 1000baseT_Half.
1493 linkmode_clear_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
1494 cmd->link_modes.supported);
1495 linkmode_clear_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
1496 cmd->link_modes.advertising);
1502 mv643xx_eth_get_link_ksettings_phyless(struct mv643xx_eth_private *mp,
1503 struct ethtool_link_ksettings *cmd)
1506 u32 supported, advertising;
1508 port_status = rdlp(mp, PORT_STATUS);
1510 supported = SUPPORTED_MII;
1511 advertising = ADVERTISED_MII;
1512 switch (port_status & PORT_SPEED_MASK) {
1514 cmd->base.speed = SPEED_10;
1516 case PORT_SPEED_100:
1517 cmd->base.speed = SPEED_100;
1519 case PORT_SPEED_1000:
1520 cmd->base.speed = SPEED_1000;
1523 cmd->base.speed = -1;
1526 cmd->base.duplex = (port_status & FULL_DUPLEX) ?
1527 DUPLEX_FULL : DUPLEX_HALF;
1528 cmd->base.port = PORT_MII;
1529 cmd->base.phy_address = 0;
1530 cmd->base.autoneg = AUTONEG_DISABLE;
1532 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
1534 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
1541 mv643xx_eth_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1546 phy_ethtool_get_wol(dev->phydev, wol);
1550 mv643xx_eth_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1557 err = phy_ethtool_set_wol(dev->phydev, wol);
1558 /* Given that mv643xx_eth works without the marvell-specific PHY driver,
1559 * this debugging hint is useful to have.
1561 if (err == -EOPNOTSUPP)
1562 netdev_info(dev, "The PHY does not support set_wol, was CONFIG_MARVELL_PHY enabled?\n");
1567 mv643xx_eth_get_link_ksettings(struct net_device *dev,
1568 struct ethtool_link_ksettings *cmd)
1570 struct mv643xx_eth_private *mp = netdev_priv(dev);
1573 return mv643xx_eth_get_link_ksettings_phy(mp, cmd);
1575 return mv643xx_eth_get_link_ksettings_phyless(mp, cmd);
1579 mv643xx_eth_set_link_ksettings(struct net_device *dev,
1580 const struct ethtool_link_ksettings *cmd)
1582 struct ethtool_link_ksettings c = *cmd;
1590 * The MAC does not support 1000baseT_Half.
1592 ethtool_convert_link_mode_to_legacy_u32(&advertising,
1593 c.link_modes.advertising);
1594 advertising &= ~ADVERTISED_1000baseT_Half;
1595 ethtool_convert_legacy_u32_to_link_mode(c.link_modes.advertising,
1598 ret = phy_ethtool_ksettings_set(dev->phydev, &c);
1600 mv643xx_eth_adjust_link(dev);
1604 static void mv643xx_eth_get_drvinfo(struct net_device *dev,
1605 struct ethtool_drvinfo *drvinfo)
1607 strscpy(drvinfo->driver, mv643xx_eth_driver_name,
1608 sizeof(drvinfo->driver));
1609 strscpy(drvinfo->version, mv643xx_eth_driver_version,
1610 sizeof(drvinfo->version));
1611 strscpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
1612 strscpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
1615 static int mv643xx_eth_get_coalesce(struct net_device *dev,
1616 struct ethtool_coalesce *ec,
1617 struct kernel_ethtool_coalesce *kernel_coal,
1618 struct netlink_ext_ack *extack)
1620 struct mv643xx_eth_private *mp = netdev_priv(dev);
1622 ec->rx_coalesce_usecs = get_rx_coal(mp);
1623 ec->tx_coalesce_usecs = get_tx_coal(mp);
1628 static int mv643xx_eth_set_coalesce(struct net_device *dev,
1629 struct ethtool_coalesce *ec,
1630 struct kernel_ethtool_coalesce *kernel_coal,
1631 struct netlink_ext_ack *extack)
1633 struct mv643xx_eth_private *mp = netdev_priv(dev);
1635 set_rx_coal(mp, ec->rx_coalesce_usecs);
1636 set_tx_coal(mp, ec->tx_coalesce_usecs);
1642 mv643xx_eth_get_ringparam(struct net_device *dev, struct ethtool_ringparam *er,
1643 struct kernel_ethtool_ringparam *kernel_er,
1644 struct netlink_ext_ack *extack)
1646 struct mv643xx_eth_private *mp = netdev_priv(dev);
1648 er->rx_max_pending = 4096;
1649 er->tx_max_pending = 4096;
1651 er->rx_pending = mp->rx_ring_size;
1652 er->tx_pending = mp->tx_ring_size;
1656 mv643xx_eth_set_ringparam(struct net_device *dev, struct ethtool_ringparam *er,
1657 struct kernel_ethtool_ringparam *kernel_er,
1658 struct netlink_ext_ack *extack)
1660 struct mv643xx_eth_private *mp = netdev_priv(dev);
1662 if (er->rx_mini_pending || er->rx_jumbo_pending)
1665 mp->rx_ring_size = min(er->rx_pending, 4096U);
1666 mp->tx_ring_size = clamp_t(unsigned int, er->tx_pending,
1667 MV643XX_MAX_SKB_DESCS * 2, 4096);
1668 if (mp->tx_ring_size != er->tx_pending)
1669 netdev_warn(dev, "TX queue size set to %u (requested %u)\n",
1670 mp->tx_ring_size, er->tx_pending);
1672 if (netif_running(dev)) {
1673 mv643xx_eth_stop(dev);
1674 if (mv643xx_eth_open(dev)) {
1676 "fatal error on re-opening device after ring param change\n");
1686 mv643xx_eth_set_features(struct net_device *dev, netdev_features_t features)
1688 struct mv643xx_eth_private *mp = netdev_priv(dev);
1689 bool rx_csum = features & NETIF_F_RXCSUM;
1691 wrlp(mp, PORT_CONFIG, rx_csum ? 0x02000000 : 0x00000000);
1696 static void mv643xx_eth_get_strings(struct net_device *dev,
1697 uint32_t stringset, uint8_t *data)
1701 if (stringset == ETH_SS_STATS) {
1702 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
1703 memcpy(data + i * ETH_GSTRING_LEN,
1704 mv643xx_eth_stats[i].stat_string,
1710 static void mv643xx_eth_get_ethtool_stats(struct net_device *dev,
1711 struct ethtool_stats *stats,
1714 struct mv643xx_eth_private *mp = netdev_priv(dev);
1717 mv643xx_eth_get_stats(dev);
1718 mib_counters_update(mp);
1720 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
1721 const struct mv643xx_eth_stats *stat;
1724 stat = mv643xx_eth_stats + i;
1726 if (stat->netdev_off >= 0)
1727 p = ((void *)mp->dev) + stat->netdev_off;
1729 p = ((void *)mp) + stat->mp_off;
1731 data[i] = (stat->sizeof_stat == 8) ?
1732 *(uint64_t *)p : *(uint32_t *)p;
1736 static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset)
1738 if (sset == ETH_SS_STATS)
1739 return ARRAY_SIZE(mv643xx_eth_stats);
1744 static const struct ethtool_ops mv643xx_eth_ethtool_ops = {
1745 .supported_coalesce_params = ETHTOOL_COALESCE_USECS,
1746 .get_drvinfo = mv643xx_eth_get_drvinfo,
1747 .nway_reset = phy_ethtool_nway_reset,
1748 .get_link = ethtool_op_get_link,
1749 .get_coalesce = mv643xx_eth_get_coalesce,
1750 .set_coalesce = mv643xx_eth_set_coalesce,
1751 .get_ringparam = mv643xx_eth_get_ringparam,
1752 .set_ringparam = mv643xx_eth_set_ringparam,
1753 .get_strings = mv643xx_eth_get_strings,
1754 .get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
1755 .get_sset_count = mv643xx_eth_get_sset_count,
1756 .get_ts_info = ethtool_op_get_ts_info,
1757 .get_wol = mv643xx_eth_get_wol,
1758 .set_wol = mv643xx_eth_set_wol,
1759 .get_link_ksettings = mv643xx_eth_get_link_ksettings,
1760 .set_link_ksettings = mv643xx_eth_set_link_ksettings,
1764 /* address handling *********************************************************/
1765 static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr)
1767 unsigned int mac_h = rdlp(mp, MAC_ADDR_HIGH);
1768 unsigned int mac_l = rdlp(mp, MAC_ADDR_LOW);
1770 addr[0] = (mac_h >> 24) & 0xff;
1771 addr[1] = (mac_h >> 16) & 0xff;
1772 addr[2] = (mac_h >> 8) & 0xff;
1773 addr[3] = mac_h & 0xff;
1774 addr[4] = (mac_l >> 8) & 0xff;
1775 addr[5] = mac_l & 0xff;
1778 static void uc_addr_set(struct mv643xx_eth_private *mp, const u8 *addr)
1780 wrlp(mp, MAC_ADDR_HIGH,
1781 (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]);
1782 wrlp(mp, MAC_ADDR_LOW, (addr[4] << 8) | addr[5]);
1785 static u32 uc_addr_filter_mask(struct net_device *dev)
1787 struct netdev_hw_addr *ha;
1790 if (dev->flags & IFF_PROMISC)
1793 nibbles = 1 << (dev->dev_addr[5] & 0x0f);
1794 netdev_for_each_uc_addr(ha, dev) {
1795 if (memcmp(dev->dev_addr, ha->addr, 5))
1797 if ((dev->dev_addr[5] ^ ha->addr[5]) & 0xf0)
1800 nibbles |= 1 << (ha->addr[5] & 0x0f);
1806 static void mv643xx_eth_program_unicast_filter(struct net_device *dev)
1808 struct mv643xx_eth_private *mp = netdev_priv(dev);
1813 uc_addr_set(mp, dev->dev_addr);
1815 port_config = rdlp(mp, PORT_CONFIG) & ~UNICAST_PROMISCUOUS_MODE;
1817 nibbles = uc_addr_filter_mask(dev);
1819 port_config |= UNICAST_PROMISCUOUS_MODE;
1823 for (i = 0; i < 16; i += 4) {
1824 int off = UNICAST_TABLE(mp->port_num) + i;
1841 wrlp(mp, PORT_CONFIG, port_config);
1844 static int addr_crc(unsigned char *addr)
1849 for (i = 0; i < 6; i++) {
1852 crc = (crc ^ addr[i]) << 8;
1853 for (j = 7; j >= 0; j--) {
1854 if (crc & (0x100 << j))
1862 static void mv643xx_eth_program_multicast_filter(struct net_device *dev)
1864 struct mv643xx_eth_private *mp = netdev_priv(dev);
1867 struct netdev_hw_addr *ha;
1870 if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI))
1873 /* Allocate both mc_spec and mc_other tables */
1874 mc_spec = kcalloc(128, sizeof(u32), GFP_ATOMIC);
1877 mc_other = &mc_spec[64];
1879 netdev_for_each_mc_addr(ha, dev) {
1884 if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) {
1889 entry = addr_crc(a);
1892 table[entry >> 2] |= 1 << (8 * (entry & 3));
1895 for (i = 0; i < 64; i++) {
1896 wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i * sizeof(u32),
1898 wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i * sizeof(u32),
1906 for (i = 0; i < 64; i++) {
1907 wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i * sizeof(u32),
1909 wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i * sizeof(u32),
1914 static void mv643xx_eth_set_rx_mode(struct net_device *dev)
1916 mv643xx_eth_program_unicast_filter(dev);
1917 mv643xx_eth_program_multicast_filter(dev);
1920 static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
1922 struct sockaddr *sa = addr;
1924 if (!is_valid_ether_addr(sa->sa_data))
1925 return -EADDRNOTAVAIL;
1927 eth_hw_addr_set(dev, sa->sa_data);
1929 netif_addr_lock_bh(dev);
1930 mv643xx_eth_program_unicast_filter(dev);
1931 netif_addr_unlock_bh(dev);
1937 /* rx/tx queue initialisation ***********************************************/
1938 static int rxq_init(struct mv643xx_eth_private *mp, int index)
1940 struct rx_queue *rxq = mp->rxq + index;
1941 struct rx_desc *rx_desc;
1947 rxq->rx_ring_size = mp->rx_ring_size;
1949 rxq->rx_desc_count = 0;
1950 rxq->rx_curr_desc = 0;
1951 rxq->rx_used_desc = 0;
1953 size = rxq->rx_ring_size * sizeof(struct rx_desc);
1955 if (index == 0 && size <= mp->rx_desc_sram_size) {
1956 rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr,
1957 mp->rx_desc_sram_size);
1958 rxq->rx_desc_dma = mp->rx_desc_sram_addr;
1960 rxq->rx_desc_area = dma_alloc_coherent(mp->dev->dev.parent,
1961 size, &rxq->rx_desc_dma,
1965 if (rxq->rx_desc_area == NULL) {
1967 "can't allocate rx ring (%d bytes)\n", size);
1970 memset(rxq->rx_desc_area, 0, size);
1972 rxq->rx_desc_area_size = size;
1973 rxq->rx_skb = kcalloc(rxq->rx_ring_size, sizeof(*rxq->rx_skb),
1975 if (rxq->rx_skb == NULL)
1978 rx_desc = rxq->rx_desc_area;
1979 for (i = 0; i < rxq->rx_ring_size; i++) {
1983 if (nexti == rxq->rx_ring_size)
1986 rx_desc[i].next_desc_ptr = rxq->rx_desc_dma +
1987 nexti * sizeof(struct rx_desc);
1994 if (index == 0 && size <= mp->rx_desc_sram_size)
1995 iounmap(rxq->rx_desc_area);
1997 dma_free_coherent(mp->dev->dev.parent, size,
2005 static void rxq_deinit(struct rx_queue *rxq)
2007 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
2012 for (i = 0; i < rxq->rx_ring_size; i++) {
2013 if (rxq->rx_skb[i]) {
2014 dev_consume_skb_any(rxq->rx_skb[i]);
2015 rxq->rx_desc_count--;
2019 if (rxq->rx_desc_count) {
2020 netdev_err(mp->dev, "error freeing rx ring -- %d skbs stuck\n",
2021 rxq->rx_desc_count);
2024 if (rxq->index == 0 &&
2025 rxq->rx_desc_area_size <= mp->rx_desc_sram_size)
2026 iounmap(rxq->rx_desc_area);
2028 dma_free_coherent(mp->dev->dev.parent, rxq->rx_desc_area_size,
2029 rxq->rx_desc_area, rxq->rx_desc_dma);
2034 static int txq_init(struct mv643xx_eth_private *mp, int index)
2036 struct tx_queue *txq = mp->txq + index;
2037 struct tx_desc *tx_desc;
2044 txq->tx_ring_size = mp->tx_ring_size;
2046 /* A queue must always have room for at least one skb.
2047 * Therefore, stop the queue when the free entries reaches
2048 * the maximum number of descriptors per skb.
2050 txq->tx_stop_threshold = txq->tx_ring_size - MV643XX_MAX_SKB_DESCS;
2051 txq->tx_wake_threshold = txq->tx_stop_threshold / 2;
2053 txq->tx_desc_count = 0;
2054 txq->tx_curr_desc = 0;
2055 txq->tx_used_desc = 0;
2057 size = txq->tx_ring_size * sizeof(struct tx_desc);
2059 if (index == 0 && size <= mp->tx_desc_sram_size) {
2060 txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr,
2061 mp->tx_desc_sram_size);
2062 txq->tx_desc_dma = mp->tx_desc_sram_addr;
2064 txq->tx_desc_area = dma_alloc_coherent(mp->dev->dev.parent,
2065 size, &txq->tx_desc_dma,
2069 if (txq->tx_desc_area == NULL) {
2071 "can't allocate tx ring (%d bytes)\n", size);
2074 memset(txq->tx_desc_area, 0, size);
2076 txq->tx_desc_area_size = size;
2078 tx_desc = txq->tx_desc_area;
2079 for (i = 0; i < txq->tx_ring_size; i++) {
2080 struct tx_desc *txd = tx_desc + i;
2084 if (nexti == txq->tx_ring_size)
2088 txd->next_desc_ptr = txq->tx_desc_dma +
2089 nexti * sizeof(struct tx_desc);
2092 txq->tx_desc_mapping = kcalloc(txq->tx_ring_size, sizeof(char),
2094 if (!txq->tx_desc_mapping) {
2096 goto err_free_desc_area;
2099 /* Allocate DMA buffers for TSO MAC/IP/TCP headers */
2100 txq->tso_hdrs = dma_alloc_coherent(mp->dev->dev.parent,
2101 txq->tx_ring_size * TSO_HEADER_SIZE,
2102 &txq->tso_hdrs_dma, GFP_KERNEL);
2103 if (txq->tso_hdrs == NULL) {
2105 goto err_free_desc_mapping;
2107 skb_queue_head_init(&txq->tx_skb);
2111 err_free_desc_mapping:
2112 kfree(txq->tx_desc_mapping);
2114 if (index == 0 && size <= mp->tx_desc_sram_size)
2115 iounmap(txq->tx_desc_area);
2117 dma_free_coherent(mp->dev->dev.parent, txq->tx_desc_area_size,
2118 txq->tx_desc_area, txq->tx_desc_dma);
2122 static void txq_deinit(struct tx_queue *txq)
2124 struct mv643xx_eth_private *mp = txq_to_mp(txq);
2127 txq_reclaim(txq, txq->tx_ring_size, 1);
2129 BUG_ON(txq->tx_used_desc != txq->tx_curr_desc);
2131 if (txq->index == 0 &&
2132 txq->tx_desc_area_size <= mp->tx_desc_sram_size)
2133 iounmap(txq->tx_desc_area);
2135 dma_free_coherent(mp->dev->dev.parent, txq->tx_desc_area_size,
2136 txq->tx_desc_area, txq->tx_desc_dma);
2137 kfree(txq->tx_desc_mapping);
2140 dma_free_coherent(mp->dev->dev.parent,
2141 txq->tx_ring_size * TSO_HEADER_SIZE,
2142 txq->tso_hdrs, txq->tso_hdrs_dma);
2146 /* netdev ops and related ***************************************************/
2147 static int mv643xx_eth_collect_events(struct mv643xx_eth_private *mp)
2152 int_cause = rdlp(mp, INT_CAUSE) & mp->int_mask;
2157 if (int_cause & INT_EXT) {
2158 int_cause &= ~INT_EXT;
2159 int_cause_ext = rdlp(mp, INT_CAUSE_EXT);
2163 wrlp(mp, INT_CAUSE, ~int_cause);
2164 mp->work_tx_end |= ((int_cause & INT_TX_END) >> 19) &
2165 ~(rdlp(mp, TXQ_COMMAND) & 0xff);
2166 mp->work_rx |= (int_cause & INT_RX) >> 2;
2169 int_cause_ext &= INT_EXT_LINK_PHY | INT_EXT_TX;
2170 if (int_cause_ext) {
2171 wrlp(mp, INT_CAUSE_EXT, ~int_cause_ext);
2172 if (int_cause_ext & INT_EXT_LINK_PHY)
2174 mp->work_tx |= int_cause_ext & INT_EXT_TX;
2180 static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id)
2182 struct net_device *dev = (struct net_device *)dev_id;
2183 struct mv643xx_eth_private *mp = netdev_priv(dev);
2185 if (unlikely(!mv643xx_eth_collect_events(mp)))
2188 wrlp(mp, INT_MASK, 0);
2189 napi_schedule(&mp->napi);
2194 static void handle_link_event(struct mv643xx_eth_private *mp)
2196 struct net_device *dev = mp->dev;
2202 port_status = rdlp(mp, PORT_STATUS);
2203 if (!(port_status & LINK_UP)) {
2204 if (netif_carrier_ok(dev)) {
2207 netdev_info(dev, "link down\n");
2209 netif_carrier_off(dev);
2211 for (i = 0; i < mp->txq_count; i++) {
2212 struct tx_queue *txq = mp->txq + i;
2214 txq_reclaim(txq, txq->tx_ring_size, 1);
2215 txq_reset_hw_ptr(txq);
2221 switch (port_status & PORT_SPEED_MASK) {
2225 case PORT_SPEED_100:
2228 case PORT_SPEED_1000:
2235 duplex = (port_status & FULL_DUPLEX) ? 1 : 0;
2236 fc = (port_status & FLOW_CONTROL_ENABLED) ? 1 : 0;
2238 netdev_info(dev, "link up, %d Mb/s, %s duplex, flow control %sabled\n",
2239 speed, duplex ? "full" : "half", fc ? "en" : "dis");
2241 if (!netif_carrier_ok(dev))
2242 netif_carrier_on(dev);
2245 static int mv643xx_eth_poll(struct napi_struct *napi, int budget)
2247 struct mv643xx_eth_private *mp;
2250 mp = container_of(napi, struct mv643xx_eth_private, napi);
2252 if (unlikely(mp->oom)) {
2254 del_timer(&mp->rx_oom);
2258 while (work_done < budget) {
2263 if (mp->work_link) {
2265 handle_link_event(mp);
2270 queue_mask = mp->work_tx | mp->work_tx_end | mp->work_rx;
2271 if (likely(!mp->oom))
2272 queue_mask |= mp->work_rx_refill;
2275 if (mv643xx_eth_collect_events(mp))
2280 queue = fls(queue_mask) - 1;
2281 queue_mask = 1 << queue;
2283 work_tbd = budget - work_done;
2287 if (mp->work_tx_end & queue_mask) {
2288 txq_kick(mp->txq + queue);
2289 } else if (mp->work_tx & queue_mask) {
2290 work_done += txq_reclaim(mp->txq + queue, work_tbd, 0);
2291 txq_maybe_wake(mp->txq + queue);
2292 } else if (mp->work_rx & queue_mask) {
2293 work_done += rxq_process(mp->rxq + queue, work_tbd);
2294 } else if (!mp->oom && (mp->work_rx_refill & queue_mask)) {
2295 work_done += rxq_refill(mp->rxq + queue, work_tbd);
2301 if (work_done < budget) {
2303 mod_timer(&mp->rx_oom, jiffies + (HZ / 10));
2304 napi_complete_done(napi, work_done);
2305 wrlp(mp, INT_MASK, mp->int_mask);
2311 static inline void oom_timer_wrapper(struct timer_list *t)
2313 struct mv643xx_eth_private *mp = from_timer(mp, t, rx_oom);
2315 napi_schedule(&mp->napi);
2318 static void port_start(struct mv643xx_eth_private *mp)
2320 struct net_device *dev = mp->dev;
2325 * Perform PHY reset, if there is a PHY.
2328 struct ethtool_link_ksettings cmd;
2330 mv643xx_eth_get_link_ksettings(dev, &cmd);
2331 phy_init_hw(dev->phydev);
2332 mv643xx_eth_set_link_ksettings(
2333 dev, (const struct ethtool_link_ksettings *)&cmd);
2334 phy_start(dev->phydev);
2338 * Configure basic link parameters.
2340 pscr = rdlp(mp, PORT_SERIAL_CONTROL);
2342 pscr |= SERIAL_PORT_ENABLE;
2343 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
2345 pscr |= DO_NOT_FORCE_LINK_FAIL;
2347 pscr |= FORCE_LINK_PASS;
2348 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
2351 * Configure TX path and queues.
2353 tx_set_rate(mp, 1000000000, 16777216);
2354 for (i = 0; i < mp->txq_count; i++) {
2355 struct tx_queue *txq = mp->txq + i;
2357 txq_reset_hw_ptr(txq);
2358 txq_set_rate(txq, 1000000000, 16777216);
2359 txq_set_fixed_prio_mode(txq);
2363 * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast
2364 * frames to RX queue #0, and include the pseudo-header when
2365 * calculating receive checksums.
2367 mv643xx_eth_set_features(mp->dev, mp->dev->features);
2370 * Treat BPDUs as normal multicasts, and disable partition mode.
2372 wrlp(mp, PORT_CONFIG_EXT, 0x00000000);
2375 * Add configured unicast addresses to address filter table.
2377 mv643xx_eth_program_unicast_filter(mp->dev);
2380 * Enable the receive queues.
2382 for (i = 0; i < mp->rxq_count; i++) {
2383 struct rx_queue *rxq = mp->rxq + i;
2386 addr = (u32)rxq->rx_desc_dma;
2387 addr += rxq->rx_curr_desc * sizeof(struct rx_desc);
2388 wrlp(mp, RXQ_CURRENT_DESC_PTR(i), addr);
2394 static void mv643xx_eth_recalc_skb_size(struct mv643xx_eth_private *mp)
2399 * Reserve 2+14 bytes for an ethernet header (the hardware
2400 * automatically prepends 2 bytes of dummy data to each
2401 * received packet), 16 bytes for up to four VLAN tags, and
2402 * 4 bytes for the trailing FCS -- 36 bytes total.
2404 skb_size = mp->dev->mtu + 36;
2407 * Make sure that the skb size is a multiple of 8 bytes, as
2408 * the lower three bits of the receive descriptor's buffer
2409 * size field are ignored by the hardware.
2411 mp->skb_size = (skb_size + 7) & ~7;
2414 * If NET_SKB_PAD is smaller than a cache line,
2415 * netdev_alloc_skb() will cause skb->data to be misaligned
2416 * to a cache line boundary. If this is the case, include
2417 * some extra space to allow re-aligning the data area.
2419 mp->skb_size += SKB_DMA_REALIGN;
2422 static int mv643xx_eth_open(struct net_device *dev)
2424 struct mv643xx_eth_private *mp = netdev_priv(dev);
2428 wrlp(mp, INT_CAUSE, 0);
2429 wrlp(mp, INT_CAUSE_EXT, 0);
2430 rdlp(mp, INT_CAUSE_EXT);
2432 err = request_irq(dev->irq, mv643xx_eth_irq,
2433 IRQF_SHARED, dev->name, dev);
2435 netdev_err(dev, "can't assign irq\n");
2439 mv643xx_eth_recalc_skb_size(mp);
2441 napi_enable(&mp->napi);
2443 mp->int_mask = INT_EXT;
2445 for (i = 0; i < mp->rxq_count; i++) {
2446 err = rxq_init(mp, i);
2449 rxq_deinit(mp->rxq + i);
2453 rxq_refill(mp->rxq + i, INT_MAX);
2454 mp->int_mask |= INT_RX_0 << i;
2458 mp->rx_oom.expires = jiffies + (HZ / 10);
2459 add_timer(&mp->rx_oom);
2462 for (i = 0; i < mp->txq_count; i++) {
2463 err = txq_init(mp, i);
2466 txq_deinit(mp->txq + i);
2469 mp->int_mask |= INT_TX_END_0 << i;
2472 add_timer(&mp->mib_counters_timer);
2475 wrlp(mp, INT_MASK_EXT, INT_EXT_LINK_PHY | INT_EXT_TX);
2476 wrlp(mp, INT_MASK, mp->int_mask);
2482 for (i = 0; i < mp->rxq_count; i++)
2483 rxq_deinit(mp->rxq + i);
2485 napi_disable(&mp->napi);
2486 free_irq(dev->irq, dev);
2491 static void port_reset(struct mv643xx_eth_private *mp)
2496 for (i = 0; i < mp->rxq_count; i++)
2497 rxq_disable(mp->rxq + i);
2498 for (i = 0; i < mp->txq_count; i++)
2499 txq_disable(mp->txq + i);
2502 u32 ps = rdlp(mp, PORT_STATUS);
2504 if ((ps & (TX_IN_PROGRESS | TX_FIFO_EMPTY)) == TX_FIFO_EMPTY)
2509 /* Reset the Enable bit in the Configuration Register */
2510 data = rdlp(mp, PORT_SERIAL_CONTROL);
2511 data &= ~(SERIAL_PORT_ENABLE |
2512 DO_NOT_FORCE_LINK_FAIL |
2514 wrlp(mp, PORT_SERIAL_CONTROL, data);
2517 static int mv643xx_eth_stop(struct net_device *dev)
2519 struct mv643xx_eth_private *mp = netdev_priv(dev);
2522 wrlp(mp, INT_MASK_EXT, 0x00000000);
2523 wrlp(mp, INT_MASK, 0x00000000);
2526 napi_disable(&mp->napi);
2528 del_timer_sync(&mp->rx_oom);
2530 netif_carrier_off(dev);
2532 phy_stop(dev->phydev);
2533 free_irq(dev->irq, dev);
2536 mv643xx_eth_get_stats(dev);
2537 mib_counters_update(mp);
2538 del_timer_sync(&mp->mib_counters_timer);
2540 for (i = 0; i < mp->rxq_count; i++)
2541 rxq_deinit(mp->rxq + i);
2542 for (i = 0; i < mp->txq_count; i++)
2543 txq_deinit(mp->txq + i);
2548 static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2555 ret = phy_mii_ioctl(dev->phydev, ifr, cmd);
2557 mv643xx_eth_adjust_link(dev);
2561 static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
2563 struct mv643xx_eth_private *mp = netdev_priv(dev);
2566 mv643xx_eth_recalc_skb_size(mp);
2567 tx_set_rate(mp, 1000000000, 16777216);
2569 if (!netif_running(dev))
2573 * Stop and then re-open the interface. This will allocate RX
2574 * skbs of the new MTU.
2575 * There is a possible danger that the open will not succeed,
2576 * due to memory being full.
2578 mv643xx_eth_stop(dev);
2579 if (mv643xx_eth_open(dev)) {
2581 "fatal error on re-opening device after MTU change\n");
2587 static void tx_timeout_task(struct work_struct *ugly)
2589 struct mv643xx_eth_private *mp;
2591 mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task);
2592 if (netif_running(mp->dev)) {
2593 netif_tx_stop_all_queues(mp->dev);
2596 netif_tx_wake_all_queues(mp->dev);
2600 static void mv643xx_eth_tx_timeout(struct net_device *dev, unsigned int txqueue)
2602 struct mv643xx_eth_private *mp = netdev_priv(dev);
2604 netdev_info(dev, "tx timeout\n");
2606 schedule_work(&mp->tx_timeout_task);
2609 #ifdef CONFIG_NET_POLL_CONTROLLER
2610 static void mv643xx_eth_netpoll(struct net_device *dev)
2612 struct mv643xx_eth_private *mp = netdev_priv(dev);
2614 wrlp(mp, INT_MASK, 0x00000000);
2617 mv643xx_eth_irq(dev->irq, dev);
2619 wrlp(mp, INT_MASK, mp->int_mask);
2624 /* platform glue ************************************************************/
2626 mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp,
2627 const struct mbus_dram_target_info *dram)
2629 void __iomem *base = msp->base;
2634 for (i = 0; i < 6; i++) {
2635 writel(0, base + WINDOW_BASE(i));
2636 writel(0, base + WINDOW_SIZE(i));
2638 writel(0, base + WINDOW_REMAP_HIGH(i));
2644 for (i = 0; i < dram->num_cs; i++) {
2645 const struct mbus_dram_window *cs = dram->cs + i;
2647 writel((cs->base & 0xffff0000) |
2648 (cs->mbus_attr << 8) |
2649 dram->mbus_dram_target_id, base + WINDOW_BASE(i));
2650 writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i));
2652 win_enable &= ~(1 << i);
2653 win_protect |= 3 << (2 * i);
2656 writel(win_enable, base + WINDOW_BAR_ENABLE);
2657 msp->win_protect = win_protect;
2660 static void infer_hw_params(struct mv643xx_eth_shared_private *msp)
2663 * Check whether we have a 14-bit coal limit field in bits
2664 * [21:8], or a 16-bit coal limit in bits [25,21:7] of the
2665 * SDMA config register.
2667 writel(0x02000000, msp->base + 0x0400 + SDMA_CONFIG);
2668 if (readl(msp->base + 0x0400 + SDMA_CONFIG) & 0x02000000)
2669 msp->extended_rx_coal_limit = 1;
2671 msp->extended_rx_coal_limit = 0;
2674 * Check whether the MAC supports TX rate control, and if
2675 * yes, whether its associated registers are in the old or
2678 writel(1, msp->base + 0x0400 + TX_BW_MTU_MOVED);
2679 if (readl(msp->base + 0x0400 + TX_BW_MTU_MOVED) & 1) {
2680 msp->tx_bw_control = TX_BW_CONTROL_NEW_LAYOUT;
2682 writel(7, msp->base + 0x0400 + TX_BW_RATE);
2683 if (readl(msp->base + 0x0400 + TX_BW_RATE) & 7)
2684 msp->tx_bw_control = TX_BW_CONTROL_OLD_LAYOUT;
2686 msp->tx_bw_control = TX_BW_CONTROL_ABSENT;
2690 #if defined(CONFIG_OF)
2691 static const struct of_device_id mv643xx_eth_shared_ids[] = {
2692 { .compatible = "marvell,orion-eth", },
2693 { .compatible = "marvell,kirkwood-eth", },
2696 MODULE_DEVICE_TABLE(of, mv643xx_eth_shared_ids);
2699 #ifdef CONFIG_OF_IRQ
2700 #define mv643xx_eth_property(_np, _name, _v) \
2703 if (!of_property_read_u32(_np, "marvell," _name, &tmp)) \
2707 static struct platform_device *port_platdev[3];
2709 static void mv643xx_eth_shared_of_remove(void)
2713 for (n = 0; n < 3; n++) {
2714 platform_device_del(port_platdev[n]);
2715 port_platdev[n] = NULL;
2719 static int mv643xx_eth_shared_of_add_port(struct platform_device *pdev,
2720 struct device_node *pnp)
2722 struct platform_device *ppdev;
2723 struct mv643xx_eth_platform_data ppd;
2724 struct resource res;
2728 memset(&ppd, 0, sizeof(ppd));
2731 memset(&res, 0, sizeof(res));
2732 if (of_irq_to_resource(pnp, 0, &res) <= 0) {
2733 dev_err(&pdev->dev, "missing interrupt on %pOFn\n", pnp);
2737 if (of_property_read_u32(pnp, "reg", &ppd.port_number)) {
2738 dev_err(&pdev->dev, "missing reg property on %pOFn\n", pnp);
2742 if (ppd.port_number >= 3) {
2743 dev_err(&pdev->dev, "invalid reg property on %pOFn\n", pnp);
2747 while (dev_num < 3 && port_platdev[dev_num])
2751 dev_err(&pdev->dev, "too many ports registered\n");
2755 ret = of_get_mac_address(pnp, ppd.mac_addr);
2756 if (ret == -EPROBE_DEFER)
2759 mv643xx_eth_property(pnp, "tx-queue-size", ppd.tx_queue_size);
2760 mv643xx_eth_property(pnp, "tx-sram-addr", ppd.tx_sram_addr);
2761 mv643xx_eth_property(pnp, "tx-sram-size", ppd.tx_sram_size);
2762 mv643xx_eth_property(pnp, "rx-queue-size", ppd.rx_queue_size);
2763 mv643xx_eth_property(pnp, "rx-sram-addr", ppd.rx_sram_addr);
2764 mv643xx_eth_property(pnp, "rx-sram-size", ppd.rx_sram_size);
2766 of_get_phy_mode(pnp, &ppd.interface);
2768 ppd.phy_node = of_parse_phandle(pnp, "phy-handle", 0);
2769 if (!ppd.phy_node) {
2770 ppd.phy_addr = MV643XX_ETH_PHY_NONE;
2771 of_property_read_u32(pnp, "speed", &ppd.speed);
2772 of_property_read_u32(pnp, "duplex", &ppd.duplex);
2775 ppdev = platform_device_alloc(MV643XX_ETH_NAME, dev_num);
2778 ppdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
2779 ppdev->dev.of_node = pnp;
2781 ret = platform_device_add_resources(ppdev, &res, 1);
2785 ret = platform_device_add_data(ppdev, &ppd, sizeof(ppd));
2789 ret = platform_device_add(ppdev);
2793 port_platdev[dev_num] = ppdev;
2798 platform_device_put(ppdev);
2802 static int mv643xx_eth_shared_of_probe(struct platform_device *pdev)
2804 struct mv643xx_eth_shared_platform_data *pd;
2805 struct device_node *pnp, *np = pdev->dev.of_node;
2808 /* bail out if not registered from DT */
2812 pd = devm_kzalloc(&pdev->dev, sizeof(*pd), GFP_KERNEL);
2815 pdev->dev.platform_data = pd;
2817 mv643xx_eth_property(np, "tx-checksum-limit", pd->tx_csum_limit);
2819 for_each_available_child_of_node(np, pnp) {
2820 ret = mv643xx_eth_shared_of_add_port(pdev, pnp);
2823 mv643xx_eth_shared_of_remove();
2831 static inline int mv643xx_eth_shared_of_probe(struct platform_device *pdev)
2836 static inline void mv643xx_eth_shared_of_remove(void)
2841 static int mv643xx_eth_shared_probe(struct platform_device *pdev)
2843 static int mv643xx_eth_version_printed;
2844 struct mv643xx_eth_shared_platform_data *pd;
2845 struct mv643xx_eth_shared_private *msp;
2846 const struct mbus_dram_target_info *dram;
2847 struct resource *res;
2850 if (!mv643xx_eth_version_printed++)
2851 pr_notice("MV-643xx 10/100/1000 ethernet driver version %s\n",
2852 mv643xx_eth_driver_version);
2854 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2858 msp = devm_kzalloc(&pdev->dev, sizeof(*msp), GFP_KERNEL);
2861 platform_set_drvdata(pdev, msp);
2863 msp->base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
2864 if (msp->base == NULL)
2867 msp->clk = devm_clk_get(&pdev->dev, NULL);
2868 if (!IS_ERR(msp->clk))
2869 clk_prepare_enable(msp->clk);
2872 * (Re-)program MBUS remapping windows if we are asked to.
2874 dram = mv_mbus_dram_info();
2876 mv643xx_eth_conf_mbus_windows(msp, dram);
2878 ret = mv643xx_eth_shared_of_probe(pdev);
2881 pd = dev_get_platdata(&pdev->dev);
2883 msp->tx_csum_limit = (pd != NULL && pd->tx_csum_limit) ?
2884 pd->tx_csum_limit : 9 * 1024;
2885 infer_hw_params(msp);
2890 if (!IS_ERR(msp->clk))
2891 clk_disable_unprepare(msp->clk);
2895 static int mv643xx_eth_shared_remove(struct platform_device *pdev)
2897 struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev);
2899 mv643xx_eth_shared_of_remove();
2900 if (!IS_ERR(msp->clk))
2901 clk_disable_unprepare(msp->clk);
2905 static struct platform_driver mv643xx_eth_shared_driver = {
2906 .probe = mv643xx_eth_shared_probe,
2907 .remove = mv643xx_eth_shared_remove,
2909 .name = MV643XX_ETH_SHARED_NAME,
2910 .of_match_table = of_match_ptr(mv643xx_eth_shared_ids),
2914 static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr)
2916 int addr_shift = 5 * mp->port_num;
2919 data = rdl(mp, PHY_ADDR);
2920 data &= ~(0x1f << addr_shift);
2921 data |= (phy_addr & 0x1f) << addr_shift;
2922 wrl(mp, PHY_ADDR, data);
2925 static int phy_addr_get(struct mv643xx_eth_private *mp)
2929 data = rdl(mp, PHY_ADDR);
2931 return (data >> (5 * mp->port_num)) & 0x1f;
2934 static void set_params(struct mv643xx_eth_private *mp,
2935 struct mv643xx_eth_platform_data *pd)
2937 struct net_device *dev = mp->dev;
2938 unsigned int tx_ring_size;
2940 if (is_valid_ether_addr(pd->mac_addr)) {
2941 eth_hw_addr_set(dev, pd->mac_addr);
2945 uc_addr_get(mp, addr);
2946 eth_hw_addr_set(dev, addr);
2949 mp->rx_ring_size = DEFAULT_RX_QUEUE_SIZE;
2950 if (pd->rx_queue_size)
2951 mp->rx_ring_size = pd->rx_queue_size;
2952 mp->rx_desc_sram_addr = pd->rx_sram_addr;
2953 mp->rx_desc_sram_size = pd->rx_sram_size;
2955 mp->rxq_count = pd->rx_queue_count ? : 1;
2957 tx_ring_size = DEFAULT_TX_QUEUE_SIZE;
2958 if (pd->tx_queue_size)
2959 tx_ring_size = pd->tx_queue_size;
2961 mp->tx_ring_size = clamp_t(unsigned int, tx_ring_size,
2962 MV643XX_MAX_SKB_DESCS * 2, 4096);
2963 if (mp->tx_ring_size != tx_ring_size)
2964 netdev_warn(dev, "TX queue size set to %u (requested %u)\n",
2965 mp->tx_ring_size, tx_ring_size);
2967 mp->tx_desc_sram_addr = pd->tx_sram_addr;
2968 mp->tx_desc_sram_size = pd->tx_sram_size;
2970 mp->txq_count = pd->tx_queue_count ? : 1;
2973 static int get_phy_mode(struct mv643xx_eth_private *mp)
2975 struct device *dev = mp->dev->dev.parent;
2976 phy_interface_t iface;
2980 err = of_get_phy_mode(dev->of_node, &iface);
2982 /* Historical default if unspecified. We could also read/write
2983 * the interface state in the PSC1
2985 if (!dev->of_node || err)
2986 iface = PHY_INTERFACE_MODE_GMII;
2990 static struct phy_device *phy_scan(struct mv643xx_eth_private *mp,
2993 struct phy_device *phydev;
2997 char phy_id[MII_BUS_ID_SIZE + 3];
2999 if (phy_addr == MV643XX_ETH_PHY_ADDR_DEFAULT) {
3000 start = phy_addr_get(mp) & 0x1f;
3003 start = phy_addr & 0x1f;
3007 /* Attempt to connect to the PHY using orion-mdio */
3008 phydev = ERR_PTR(-ENODEV);
3009 for (i = 0; i < num; i++) {
3010 int addr = (start + i) & 0x1f;
3012 snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
3013 "orion-mdio-mii", addr);
3015 phydev = phy_connect(mp->dev, phy_id, mv643xx_eth_adjust_link,
3017 if (!IS_ERR(phydev)) {
3018 phy_addr_set(mp, addr);
3026 static void phy_init(struct mv643xx_eth_private *mp, int speed, int duplex)
3028 struct net_device *dev = mp->dev;
3029 struct phy_device *phy = dev->phydev;
3032 phy->autoneg = AUTONEG_ENABLE;
3035 linkmode_copy(phy->advertising, phy->supported);
3036 linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
3039 phy->autoneg = AUTONEG_DISABLE;
3040 linkmode_zero(phy->advertising);
3042 phy->duplex = duplex;
3044 phy_start_aneg(phy);
3047 static void init_pscr(struct mv643xx_eth_private *mp, int speed, int duplex)
3049 struct net_device *dev = mp->dev;
3052 pscr = rdlp(mp, PORT_SERIAL_CONTROL);
3053 if (pscr & SERIAL_PORT_ENABLE) {
3054 pscr &= ~SERIAL_PORT_ENABLE;
3055 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
3058 pscr = MAX_RX_PACKET_9700BYTE | SERIAL_PORT_CONTROL_RESERVED;
3060 pscr |= DISABLE_AUTO_NEG_SPEED_GMII;
3061 if (speed == SPEED_1000)
3062 pscr |= SET_GMII_SPEED_TO_1000;
3063 else if (speed == SPEED_100)
3064 pscr |= SET_MII_SPEED_TO_100;
3066 pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL;
3068 pscr |= DISABLE_AUTO_NEG_FOR_DUPLEX;
3069 if (duplex == DUPLEX_FULL)
3070 pscr |= SET_FULL_DUPLEX_MODE;
3073 wrlp(mp, PORT_SERIAL_CONTROL, pscr);
3076 static const struct net_device_ops mv643xx_eth_netdev_ops = {
3077 .ndo_open = mv643xx_eth_open,
3078 .ndo_stop = mv643xx_eth_stop,
3079 .ndo_start_xmit = mv643xx_eth_xmit,
3080 .ndo_set_rx_mode = mv643xx_eth_set_rx_mode,
3081 .ndo_set_mac_address = mv643xx_eth_set_mac_address,
3082 .ndo_validate_addr = eth_validate_addr,
3083 .ndo_eth_ioctl = mv643xx_eth_ioctl,
3084 .ndo_change_mtu = mv643xx_eth_change_mtu,
3085 .ndo_set_features = mv643xx_eth_set_features,
3086 .ndo_tx_timeout = mv643xx_eth_tx_timeout,
3087 .ndo_get_stats = mv643xx_eth_get_stats,
3088 #ifdef CONFIG_NET_POLL_CONTROLLER
3089 .ndo_poll_controller = mv643xx_eth_netpoll,
3093 static int mv643xx_eth_probe(struct platform_device *pdev)
3095 struct mv643xx_eth_platform_data *pd;
3096 struct mv643xx_eth_private *mp;
3097 struct net_device *dev;
3098 struct phy_device *phydev = NULL;
3102 pd = dev_get_platdata(&pdev->dev);
3104 dev_err(&pdev->dev, "no mv643xx_eth_platform_data\n");
3108 if (pd->shared == NULL) {
3109 dev_err(&pdev->dev, "no mv643xx_eth_platform_data->shared\n");
3113 dev = alloc_etherdev_mq(sizeof(struct mv643xx_eth_private), 8);
3117 SET_NETDEV_DEV(dev, &pdev->dev);
3118 mp = netdev_priv(dev);
3119 platform_set_drvdata(pdev, mp);
3121 mp->shared = platform_get_drvdata(pd->shared);
3122 mp->base = mp->shared->base + 0x0400 + (pd->port_number << 10);
3123 mp->port_num = pd->port_number;
3127 if (of_device_is_compatible(pdev->dev.of_node,
3128 "marvell,kirkwood-eth-port")) {
3129 psc1r = rdlp(mp, PORT_SERIAL_CONTROL1);
3131 /* Kirkwood resets some registers on gated clocks. Especially
3132 * CLK125_BYPASS_EN must be cleared but is not available on
3133 * all other SoCs/System Controllers using this driver.
3135 psc1r &= ~CLK125_BYPASS_EN;
3137 /* On Kirkwood with two Ethernet controllers, if both of them
3138 * have RGMII_EN disabled, the first controller will be in GMII
3139 * mode and the second one is effectively disabled, instead of
3140 * two MII interfaces.
3142 * To enable GMII in the first controller, the second one must
3143 * also be configured (and may be enabled) with RGMII_EN
3144 * disabled too, even though it cannot be used at all.
3146 switch (pd->interface) {
3147 /* Use internal to denote second controller being disabled */
3148 case PHY_INTERFACE_MODE_INTERNAL:
3149 case PHY_INTERFACE_MODE_MII:
3150 case PHY_INTERFACE_MODE_GMII:
3153 case PHY_INTERFACE_MODE_RGMII:
3154 case PHY_INTERFACE_MODE_RGMII_ID:
3155 case PHY_INTERFACE_MODE_RGMII_RXID:
3156 case PHY_INTERFACE_MODE_RGMII_TXID:
3160 /* Unknown; don't touch */
3164 wrlp(mp, PORT_SERIAL_CONTROL1, psc1r);
3168 * Start with a default rate, and if there is a clock, allow
3169 * it to override the default.
3171 mp->t_clk = 133000000;
3172 mp->clk = devm_clk_get(&pdev->dev, NULL);
3173 if (!IS_ERR(mp->clk)) {
3174 clk_prepare_enable(mp->clk);
3175 mp->t_clk = clk_get_rate(mp->clk);
3176 } else if (!IS_ERR(mp->shared->clk)) {
3177 mp->t_clk = clk_get_rate(mp->shared->clk);
3181 netif_set_real_num_tx_queues(dev, mp->txq_count);
3182 netif_set_real_num_rx_queues(dev, mp->rxq_count);
3186 phydev = of_phy_connect(mp->dev, pd->phy_node,
3187 mv643xx_eth_adjust_link, 0,
3192 phy_addr_set(mp, phydev->mdio.addr);
3193 } else if (pd->phy_addr != MV643XX_ETH_PHY_NONE) {
3194 phydev = phy_scan(mp, pd->phy_addr);
3197 err = PTR_ERR(phydev);
3199 phy_init(mp, pd->speed, pd->duplex);
3201 if (err == -ENODEV) {
3202 err = -EPROBE_DEFER;
3208 dev->ethtool_ops = &mv643xx_eth_ethtool_ops;
3210 init_pscr(mp, pd->speed, pd->duplex);
3213 mib_counters_clear(mp);
3215 timer_setup(&mp->mib_counters_timer, mib_counters_timer_wrapper, 0);
3216 mp->mib_counters_timer.expires = jiffies + 30 * HZ;
3218 spin_lock_init(&mp->mib_counters_lock);
3220 INIT_WORK(&mp->tx_timeout_task, tx_timeout_task);
3222 netif_napi_add(dev, &mp->napi, mv643xx_eth_poll);
3224 timer_setup(&mp->rx_oom, oom_timer_wrapper, 0);
3227 irq = platform_get_irq(pdev, 0);
3228 if (WARN_ON(irq < 0)) {
3234 dev->netdev_ops = &mv643xx_eth_netdev_ops;
3236 dev->watchdog_timeo = 2 * HZ;
3239 dev->features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO;
3240 dev->vlan_features = dev->features;
3242 dev->features |= NETIF_F_RXCSUM;
3243 dev->hw_features = dev->features;
3245 dev->priv_flags |= IFF_UNICAST_FLT;
3246 netif_set_tso_max_segs(dev, MV643XX_MAX_TSO_SEGS);
3248 /* MTU range: 64 - 9500 */
3250 dev->max_mtu = 9500;
3252 if (mp->shared->win_protect)
3253 wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect);
3255 netif_carrier_off(dev);
3257 wrlp(mp, SDMA_CONFIG, PORT_SDMA_CONFIG_DEFAULT_VALUE);
3259 set_rx_coal(mp, 250);
3262 err = register_netdev(dev);
3266 netdev_notice(dev, "port %d with MAC address %pM\n",
3267 mp->port_num, dev->dev_addr);
3269 if (mp->tx_desc_sram_size > 0)
3270 netdev_notice(dev, "configured with sram\n");
3275 if (!IS_ERR(mp->clk))
3276 clk_disable_unprepare(mp->clk);
3282 static int mv643xx_eth_remove(struct platform_device *pdev)
3284 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
3285 struct net_device *dev = mp->dev;
3287 unregister_netdev(mp->dev);
3289 phy_disconnect(dev->phydev);
3290 cancel_work_sync(&mp->tx_timeout_task);
3292 if (!IS_ERR(mp->clk))
3293 clk_disable_unprepare(mp->clk);
3295 free_netdev(mp->dev);
3300 static void mv643xx_eth_shutdown(struct platform_device *pdev)
3302 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
3304 /* Mask all interrupts on ethernet port */
3305 wrlp(mp, INT_MASK, 0);
3308 if (netif_running(mp->dev))
3312 static struct platform_driver mv643xx_eth_driver = {
3313 .probe = mv643xx_eth_probe,
3314 .remove = mv643xx_eth_remove,
3315 .shutdown = mv643xx_eth_shutdown,
3317 .name = MV643XX_ETH_NAME,
3321 static struct platform_driver * const drivers[] = {
3322 &mv643xx_eth_shared_driver,
3323 &mv643xx_eth_driver,
3326 static int __init mv643xx_eth_init_module(void)
3328 return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
3330 module_init(mv643xx_eth_init_module);
3332 static void __exit mv643xx_eth_cleanup_module(void)
3334 platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
3336 module_exit(mv643xx_eth_cleanup_module);
3338 MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, "
3339 "Manish Lachwani, Dale Farnsworth and Lennert Buytenhek");
3340 MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
3341 MODULE_LICENSE("GPL");
3342 MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME);
3343 MODULE_ALIAS("platform:" MV643XX_ETH_NAME);