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[] = "1.3";
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 TX_IN_PROGRESS 0x00000080
94 #define PORT_SPEED_MASK 0x00000030
95 #define PORT_SPEED_1000 0x00000010
96 #define PORT_SPEED_100 0x00000020
97 #define PORT_SPEED_10 0x00000000
98 #define FLOW_CONTROL_ENABLED 0x00000008
99 #define FULL_DUPLEX 0x00000004
100 #define LINK_UP 0x00000002
101 #define TXQ_COMMAND(p) (0x0448 + ((p) << 10))
102 #define TXQ_FIX_PRIO_CONF(p) (0x044c + ((p) << 10))
103 #define TX_BW_RATE(p) (0x0450 + ((p) << 10))
104 #define TX_BW_MTU(p) (0x0458 + ((p) << 10))
105 #define TX_BW_BURST(p) (0x045c + ((p) << 10))
106 #define INT_CAUSE(p) (0x0460 + ((p) << 10))
107 #define INT_TX_END_0 0x00080000
108 #define INT_TX_END 0x07f80000
109 #define INT_RX 0x0007fbfc
110 #define INT_EXT 0x00000002
111 #define INT_CAUSE_EXT(p) (0x0464 + ((p) << 10))
112 #define INT_EXT_LINK 0x00100000
113 #define INT_EXT_PHY 0x00010000
114 #define INT_EXT_TX_ERROR_0 0x00000100
115 #define INT_EXT_TX_0 0x00000001
116 #define INT_EXT_TX 0x0000ffff
117 #define INT_MASK(p) (0x0468 + ((p) << 10))
118 #define INT_MASK_EXT(p) (0x046c + ((p) << 10))
119 #define TX_FIFO_URGENT_THRESHOLD(p) (0x0474 + ((p) << 10))
120 #define TXQ_FIX_PRIO_CONF_MOVED(p) (0x04dc + ((p) << 10))
121 #define TX_BW_RATE_MOVED(p) (0x04e0 + ((p) << 10))
122 #define TX_BW_MTU_MOVED(p) (0x04e8 + ((p) << 10))
123 #define TX_BW_BURST_MOVED(p) (0x04ec + ((p) << 10))
124 #define RXQ_CURRENT_DESC_PTR(p, q) (0x060c + ((p) << 10) + ((q) << 4))
125 #define RXQ_COMMAND(p) (0x0680 + ((p) << 10))
126 #define TXQ_CURRENT_DESC_PTR(p, q) (0x06c0 + ((p) << 10) + ((q) << 2))
127 #define TXQ_BW_TOKENS(p, q) (0x0700 + ((p) << 10) + ((q) << 4))
128 #define TXQ_BW_CONF(p, q) (0x0704 + ((p) << 10) + ((q) << 4))
129 #define TXQ_BW_WRR_CONF(p, q) (0x0708 + ((p) << 10) + ((q) << 4))
130 #define MIB_COUNTERS(p) (0x1000 + ((p) << 7))
131 #define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10))
132 #define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10))
133 #define UNICAST_TABLE(p) (0x1600 + ((p) << 10))
137 * SDMA configuration register.
139 #define RX_BURST_SIZE_16_64BIT (4 << 1)
140 #define BLM_RX_NO_SWAP (1 << 4)
141 #define BLM_TX_NO_SWAP (1 << 5)
142 #define TX_BURST_SIZE_16_64BIT (4 << 22)
144 #if defined(__BIG_ENDIAN)
145 #define PORT_SDMA_CONFIG_DEFAULT_VALUE \
146 RX_BURST_SIZE_16_64BIT | \
147 TX_BURST_SIZE_16_64BIT
148 #elif defined(__LITTLE_ENDIAN)
149 #define PORT_SDMA_CONFIG_DEFAULT_VALUE \
150 RX_BURST_SIZE_16_64BIT | \
153 TX_BURST_SIZE_16_64BIT
155 #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
160 * Port serial control register.
162 #define SET_MII_SPEED_TO_100 (1 << 24)
163 #define SET_GMII_SPEED_TO_1000 (1 << 23)
164 #define SET_FULL_DUPLEX_MODE (1 << 21)
165 #define MAX_RX_PACKET_9700BYTE (5 << 17)
166 #define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13)
167 #define DO_NOT_FORCE_LINK_FAIL (1 << 10)
168 #define SERIAL_PORT_CONTROL_RESERVED (1 << 9)
169 #define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3)
170 #define DISABLE_AUTO_NEG_FOR_DUPLEX (1 << 2)
171 #define FORCE_LINK_PASS (1 << 1)
172 #define SERIAL_PORT_ENABLE (1 << 0)
174 #define DEFAULT_RX_QUEUE_SIZE 400
175 #define DEFAULT_TX_QUEUE_SIZE 800
181 #if defined(__BIG_ENDIAN)
183 u16 byte_cnt; /* Descriptor buffer byte count */
184 u16 buf_size; /* Buffer size */
185 u32 cmd_sts; /* Descriptor command status */
186 u32 next_desc_ptr; /* Next descriptor pointer */
187 u32 buf_ptr; /* Descriptor buffer pointer */
191 u16 byte_cnt; /* buffer byte count */
192 u16 l4i_chk; /* CPU provided TCP checksum */
193 u32 cmd_sts; /* Command/status field */
194 u32 next_desc_ptr; /* Pointer to next descriptor */
195 u32 buf_ptr; /* pointer to buffer for this descriptor*/
197 #elif defined(__LITTLE_ENDIAN)
199 u32 cmd_sts; /* Descriptor command status */
200 u16 buf_size; /* Buffer size */
201 u16 byte_cnt; /* Descriptor buffer byte count */
202 u32 buf_ptr; /* Descriptor buffer pointer */
203 u32 next_desc_ptr; /* Next descriptor pointer */
207 u32 cmd_sts; /* Command/status field */
208 u16 l4i_chk; /* CPU provided TCP checksum */
209 u16 byte_cnt; /* buffer byte count */
210 u32 buf_ptr; /* pointer to buffer for this descriptor*/
211 u32 next_desc_ptr; /* Pointer to next descriptor */
214 #error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
217 /* RX & TX descriptor command */
218 #define BUFFER_OWNED_BY_DMA 0x80000000
220 /* RX & TX descriptor status */
221 #define ERROR_SUMMARY 0x00000001
223 /* RX descriptor status */
224 #define LAYER_4_CHECKSUM_OK 0x40000000
225 #define RX_ENABLE_INTERRUPT 0x20000000
226 #define RX_FIRST_DESC 0x08000000
227 #define RX_LAST_DESC 0x04000000
229 /* TX descriptor command */
230 #define TX_ENABLE_INTERRUPT 0x00800000
231 #define GEN_CRC 0x00400000
232 #define TX_FIRST_DESC 0x00200000
233 #define TX_LAST_DESC 0x00100000
234 #define ZERO_PADDING 0x00080000
235 #define GEN_IP_V4_CHECKSUM 0x00040000
236 #define GEN_TCP_UDP_CHECKSUM 0x00020000
237 #define UDP_FRAME 0x00010000
238 #define MAC_HDR_EXTRA_4_BYTES 0x00008000
239 #define MAC_HDR_EXTRA_8_BYTES 0x00000200
241 #define TX_IHL_SHIFT 11
244 /* global *******************************************************************/
245 struct mv643xx_eth_shared_private {
247 * Ethernet controller base address.
252 * Protects access to SMI_REG, which is shared between ports.
257 * Per-port MBUS window access register value.
262 * Hardware-specific parameters.
265 int extended_rx_coal_limit;
266 int tx_bw_control_moved;
270 /* per-port *****************************************************************/
271 struct mib_counters {
272 u64 good_octets_received;
273 u32 bad_octets_received;
274 u32 internal_mac_transmit_err;
275 u32 good_frames_received;
276 u32 bad_frames_received;
277 u32 broadcast_frames_received;
278 u32 multicast_frames_received;
279 u32 frames_64_octets;
280 u32 frames_65_to_127_octets;
281 u32 frames_128_to_255_octets;
282 u32 frames_256_to_511_octets;
283 u32 frames_512_to_1023_octets;
284 u32 frames_1024_to_max_octets;
285 u64 good_octets_sent;
286 u32 good_frames_sent;
287 u32 excessive_collision;
288 u32 multicast_frames_sent;
289 u32 broadcast_frames_sent;
290 u32 unrec_mac_control_received;
292 u32 good_fc_received;
294 u32 undersize_received;
295 u32 fragments_received;
296 u32 oversize_received;
298 u32 mac_receive_error;
313 struct rx_desc *rx_desc_area;
314 dma_addr_t rx_desc_dma;
315 int rx_desc_area_size;
316 struct sk_buff **rx_skb;
318 struct timer_list rx_oom;
330 struct tx_desc *tx_desc_area;
331 dma_addr_t tx_desc_dma;
332 int tx_desc_area_size;
333 struct sk_buff **tx_skb;
336 struct mv643xx_eth_private {
337 struct mv643xx_eth_shared_private *shared;
340 struct net_device *dev;
342 struct mv643xx_eth_shared_private *shared_smi;
347 struct mib_counters mib_counters;
348 struct work_struct tx_timeout_task;
349 struct mii_if_info mii;
354 int default_rx_ring_size;
355 unsigned long rx_desc_sram_addr;
356 int rx_desc_sram_size;
359 struct napi_struct napi;
360 struct rx_queue rxq[8];
365 int default_tx_ring_size;
366 unsigned long tx_desc_sram_addr;
367 int tx_desc_sram_size;
370 struct tx_queue txq[8];
371 #ifdef MV643XX_ETH_TX_FAST_REFILL
372 int tx_clean_threshold;
377 /* port register accessors **************************************************/
378 static inline u32 rdl(struct mv643xx_eth_private *mp, int offset)
380 return readl(mp->shared->base + offset);
383 static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data)
385 writel(data, mp->shared->base + offset);
389 /* rxq/txq helper functions *************************************************/
390 static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq)
392 return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]);
395 static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq)
397 return container_of(txq, struct mv643xx_eth_private, txq[txq->index]);
400 static void rxq_enable(struct rx_queue *rxq)
402 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
403 wrl(mp, RXQ_COMMAND(mp->port_num), 1 << rxq->index);
406 static void rxq_disable(struct rx_queue *rxq)
408 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
409 u8 mask = 1 << rxq->index;
411 wrl(mp, RXQ_COMMAND(mp->port_num), mask << 8);
412 while (rdl(mp, RXQ_COMMAND(mp->port_num)) & mask)
416 static void txq_reset_hw_ptr(struct tx_queue *txq)
418 struct mv643xx_eth_private *mp = txq_to_mp(txq);
419 int off = TXQ_CURRENT_DESC_PTR(mp->port_num, txq->index);
422 addr = (u32)txq->tx_desc_dma;
423 addr += txq->tx_curr_desc * sizeof(struct tx_desc);
427 static void txq_enable(struct tx_queue *txq)
429 struct mv643xx_eth_private *mp = txq_to_mp(txq);
430 wrl(mp, TXQ_COMMAND(mp->port_num), 1 << txq->index);
433 static void txq_disable(struct tx_queue *txq)
435 struct mv643xx_eth_private *mp = txq_to_mp(txq);
436 u8 mask = 1 << txq->index;
438 wrl(mp, TXQ_COMMAND(mp->port_num), mask << 8);
439 while (rdl(mp, TXQ_COMMAND(mp->port_num)) & mask)
443 static void __txq_maybe_wake(struct tx_queue *txq)
445 struct mv643xx_eth_private *mp = txq_to_mp(txq);
448 * netif_{stop,wake}_queue() flow control only applies to
451 BUG_ON(txq->index != mp->txq_primary);
453 if (txq->tx_ring_size - txq->tx_desc_count >= MAX_DESCS_PER_SKB)
454 netif_wake_queue(mp->dev);
458 /* rx ***********************************************************************/
459 static void txq_reclaim(struct tx_queue *txq, int force);
461 static void rxq_refill(struct rx_queue *rxq)
463 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
466 spin_lock_irqsave(&mp->lock, flags);
468 while (rxq->rx_desc_count < rxq->rx_ring_size) {
475 * Reserve 2+14 bytes for an ethernet header (the
476 * hardware automatically prepends 2 bytes of dummy
477 * data to each received packet), 16 bytes for up to
478 * four VLAN tags, and 4 bytes for the trailing FCS
481 skb_size = mp->dev->mtu + 36;
484 * Make sure that the skb size is a multiple of 8
485 * bytes, as the lower three bits of the receive
486 * descriptor's buffer size field are ignored by
489 skb_size = (skb_size + 7) & ~7;
491 skb = dev_alloc_skb(skb_size + dma_get_cache_alignment() - 1);
495 unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1);
497 skb_reserve(skb, dma_get_cache_alignment() - unaligned);
499 rxq->rx_desc_count++;
500 rx = rxq->rx_used_desc;
501 rxq->rx_used_desc = (rx + 1) % rxq->rx_ring_size;
503 rxq->rx_desc_area[rx].buf_ptr = dma_map_single(NULL, skb->data,
504 skb_size, DMA_FROM_DEVICE);
505 rxq->rx_desc_area[rx].buf_size = skb_size;
506 rxq->rx_skb[rx] = skb;
508 rxq->rx_desc_area[rx].cmd_sts = BUFFER_OWNED_BY_DMA |
513 * The hardware automatically prepends 2 bytes of
514 * dummy data to each received packet, so that the
515 * IP header ends up 16-byte aligned.
520 if (rxq->rx_desc_count != rxq->rx_ring_size)
521 mod_timer(&rxq->rx_oom, jiffies + (HZ / 10));
523 spin_unlock_irqrestore(&mp->lock, flags);
526 static inline void rxq_refill_timer_wrapper(unsigned long data)
528 rxq_refill((struct rx_queue *)data);
531 static int rxq_process(struct rx_queue *rxq, int budget)
533 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
534 struct net_device_stats *stats = &mp->dev->stats;
538 while (rx < budget && rxq->rx_desc_count) {
539 struct rx_desc *rx_desc;
540 unsigned int cmd_sts;
544 spin_lock_irqsave(&mp->lock, flags);
546 rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc];
548 cmd_sts = rx_desc->cmd_sts;
549 if (cmd_sts & BUFFER_OWNED_BY_DMA) {
550 spin_unlock_irqrestore(&mp->lock, flags);
555 skb = rxq->rx_skb[rxq->rx_curr_desc];
556 rxq->rx_skb[rxq->rx_curr_desc] = NULL;
558 rxq->rx_curr_desc = (rxq->rx_curr_desc + 1) % rxq->rx_ring_size;
560 spin_unlock_irqrestore(&mp->lock, flags);
562 dma_unmap_single(NULL, rx_desc->buf_ptr + 2,
563 rx_desc->buf_size, DMA_FROM_DEVICE);
564 rxq->rx_desc_count--;
570 * Note that the descriptor byte count includes 2 dummy
571 * bytes automatically inserted by the hardware at the
572 * start of the packet (which we don't count), and a 4
573 * byte CRC at the end of the packet (which we do count).
576 stats->rx_bytes += rx_desc->byte_cnt - 2;
579 * In case we received a packet without first / last bits
580 * on, or the error summary bit is set, the packet needs
583 if (((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
584 (RX_FIRST_DESC | RX_LAST_DESC))
585 || (cmd_sts & ERROR_SUMMARY)) {
588 if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
589 (RX_FIRST_DESC | RX_LAST_DESC)) {
591 dev_printk(KERN_ERR, &mp->dev->dev,
592 "received packet spanning "
593 "multiple descriptors\n");
596 if (cmd_sts & ERROR_SUMMARY)
599 dev_kfree_skb_irq(skb);
602 * The -4 is for the CRC in the trailer of the
605 skb_put(skb, rx_desc->byte_cnt - 2 - 4);
607 if (cmd_sts & LAYER_4_CHECKSUM_OK) {
608 skb->ip_summed = CHECKSUM_UNNECESSARY;
610 (cmd_sts & 0x0007fff8) >> 3);
612 skb->protocol = eth_type_trans(skb, mp->dev);
613 #ifdef MV643XX_ETH_NAPI
614 netif_receive_skb(skb);
620 mp->dev->last_rx = jiffies;
628 #ifdef MV643XX_ETH_NAPI
629 static int mv643xx_eth_poll(struct napi_struct *napi, int budget)
631 struct mv643xx_eth_private *mp;
635 mp = container_of(napi, struct mv643xx_eth_private, napi);
637 #ifdef MV643XX_ETH_TX_FAST_REFILL
638 if (++mp->tx_clean_threshold > 5) {
639 mp->tx_clean_threshold = 0;
640 for (i = 0; i < 8; i++)
641 if (mp->txq_mask & (1 << i))
642 txq_reclaim(mp->txq + i, 0);
644 if (netif_carrier_ok(mp->dev)) {
645 spin_lock_irq(&mp->lock);
646 __txq_maybe_wake(mp->txq + mp->txq_primary);
647 spin_unlock_irq(&mp->lock);
653 for (i = 7; rx < budget && i >= 0; i--)
654 if (mp->rxq_mask & (1 << i))
655 rx += rxq_process(mp->rxq + i, budget - rx);
658 netif_rx_complete(mp->dev, napi);
659 wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
667 /* tx ***********************************************************************/
668 static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
672 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
673 skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag];
674 if (fragp->size <= 8 && fragp->page_offset & 7)
681 static int txq_alloc_desc_index(struct tx_queue *txq)
685 BUG_ON(txq->tx_desc_count >= txq->tx_ring_size);
687 tx_desc_curr = txq->tx_curr_desc;
688 txq->tx_curr_desc = (tx_desc_curr + 1) % txq->tx_ring_size;
690 BUG_ON(txq->tx_curr_desc == txq->tx_used_desc);
695 static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb)
697 int nr_frags = skb_shinfo(skb)->nr_frags;
700 for (frag = 0; frag < nr_frags; frag++) {
701 skb_frag_t *this_frag;
703 struct tx_desc *desc;
705 this_frag = &skb_shinfo(skb)->frags[frag];
706 tx_index = txq_alloc_desc_index(txq);
707 desc = &txq->tx_desc_area[tx_index];
710 * The last fragment will generate an interrupt
711 * which will free the skb on TX completion.
713 if (frag == nr_frags - 1) {
714 desc->cmd_sts = BUFFER_OWNED_BY_DMA |
715 ZERO_PADDING | TX_LAST_DESC |
717 txq->tx_skb[tx_index] = skb;
719 desc->cmd_sts = BUFFER_OWNED_BY_DMA;
720 txq->tx_skb[tx_index] = NULL;
724 desc->byte_cnt = this_frag->size;
725 desc->buf_ptr = dma_map_page(NULL, this_frag->page,
726 this_frag->page_offset,
732 static inline __be16 sum16_as_be(__sum16 sum)
734 return (__force __be16)sum;
737 static void txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb)
739 struct mv643xx_eth_private *mp = txq_to_mp(txq);
740 int nr_frags = skb_shinfo(skb)->nr_frags;
742 struct tx_desc *desc;
746 cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA;
748 tx_index = txq_alloc_desc_index(txq);
749 desc = &txq->tx_desc_area[tx_index];
752 txq_submit_frag_skb(txq, skb);
754 length = skb_headlen(skb);
755 txq->tx_skb[tx_index] = NULL;
757 cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT;
759 txq->tx_skb[tx_index] = skb;
762 desc->byte_cnt = length;
763 desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE);
765 if (skb->ip_summed == CHECKSUM_PARTIAL) {
768 BUG_ON(skb->protocol != htons(ETH_P_IP) &&
769 skb->protocol != htons(ETH_P_8021Q));
771 cmd_sts |= GEN_TCP_UDP_CHECKSUM |
773 ip_hdr(skb)->ihl << TX_IHL_SHIFT;
775 mac_hdr_len = (void *)ip_hdr(skb) - (void *)skb->data;
776 switch (mac_hdr_len - ETH_HLEN) {
780 cmd_sts |= MAC_HDR_EXTRA_4_BYTES;
783 cmd_sts |= MAC_HDR_EXTRA_8_BYTES;
786 cmd_sts |= MAC_HDR_EXTRA_4_BYTES;
787 cmd_sts |= MAC_HDR_EXTRA_8_BYTES;
791 dev_printk(KERN_ERR, &txq_to_mp(txq)->dev->dev,
792 "mac header length is %d?!\n", mac_hdr_len);
796 switch (ip_hdr(skb)->protocol) {
798 cmd_sts |= UDP_FRAME;
799 desc->l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check));
802 desc->l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check));
808 /* Errata BTS #50, IHL must be 5 if no HW checksum */
809 cmd_sts |= 5 << TX_IHL_SHIFT;
813 /* ensure all other descriptors are written before first cmd_sts */
815 desc->cmd_sts = cmd_sts;
817 /* clear TX_END interrupt status */
818 wrl(mp, INT_CAUSE(mp->port_num), ~(INT_TX_END_0 << txq->index));
819 rdl(mp, INT_CAUSE(mp->port_num));
821 /* ensure all descriptors are written before poking hardware */
825 txq->tx_desc_count += nr_frags + 1;
828 static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev)
830 struct mv643xx_eth_private *mp = netdev_priv(dev);
831 struct net_device_stats *stats = &dev->stats;
832 struct tx_queue *txq;
835 if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) {
837 dev_printk(KERN_DEBUG, &dev->dev,
838 "failed to linearize skb with tiny "
839 "unaligned fragment\n");
840 return NETDEV_TX_BUSY;
843 spin_lock_irqsave(&mp->lock, flags);
845 txq = mp->txq + mp->txq_primary;
847 if (txq->tx_ring_size - txq->tx_desc_count < MAX_DESCS_PER_SKB) {
848 spin_unlock_irqrestore(&mp->lock, flags);
849 if (txq->index == mp->txq_primary && net_ratelimit())
850 dev_printk(KERN_ERR, &dev->dev,
851 "primary tx queue full?!\n");
856 txq_submit_skb(txq, skb);
857 stats->tx_bytes += skb->len;
859 dev->trans_start = jiffies;
861 if (txq->index == mp->txq_primary) {
864 entries_left = txq->tx_ring_size - txq->tx_desc_count;
865 if (entries_left < MAX_DESCS_PER_SKB)
866 netif_stop_queue(dev);
869 spin_unlock_irqrestore(&mp->lock, flags);
875 /* tx rate control **********************************************************/
877 * Set total maximum TX rate (shared by all TX queues for this port)
878 * to 'rate' bits per second, with a maximum burst of 'burst' bytes.
880 static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst)
886 token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
887 if (token_rate > 1023)
890 mtu = (mp->dev->mtu + 255) >> 8;
894 bucket_size = (burst + 255) >> 8;
895 if (bucket_size > 65535)
898 if (mp->shared->tx_bw_control_moved) {
899 wrl(mp, TX_BW_RATE_MOVED(mp->port_num), token_rate);
900 wrl(mp, TX_BW_MTU_MOVED(mp->port_num), mtu);
901 wrl(mp, TX_BW_BURST_MOVED(mp->port_num), bucket_size);
903 wrl(mp, TX_BW_RATE(mp->port_num), token_rate);
904 wrl(mp, TX_BW_MTU(mp->port_num), mtu);
905 wrl(mp, TX_BW_BURST(mp->port_num), bucket_size);
909 static void txq_set_rate(struct tx_queue *txq, int rate, int burst)
911 struct mv643xx_eth_private *mp = txq_to_mp(txq);
915 token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
916 if (token_rate > 1023)
919 bucket_size = (burst + 255) >> 8;
920 if (bucket_size > 65535)
923 wrl(mp, TXQ_BW_TOKENS(mp->port_num, txq->index), token_rate << 14);
924 wrl(mp, TXQ_BW_CONF(mp->port_num, txq->index),
925 (bucket_size << 10) | token_rate);
928 static void txq_set_fixed_prio_mode(struct tx_queue *txq)
930 struct mv643xx_eth_private *mp = txq_to_mp(txq);
935 * Turn on fixed priority mode.
937 if (mp->shared->tx_bw_control_moved)
938 off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num);
940 off = TXQ_FIX_PRIO_CONF(mp->port_num);
943 val |= 1 << txq->index;
947 static void txq_set_wrr(struct tx_queue *txq, int weight)
949 struct mv643xx_eth_private *mp = txq_to_mp(txq);
954 * Turn off fixed priority mode.
956 if (mp->shared->tx_bw_control_moved)
957 off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num);
959 off = TXQ_FIX_PRIO_CONF(mp->port_num);
962 val &= ~(1 << txq->index);
966 * Configure WRR weight for this queue.
968 off = TXQ_BW_WRR_CONF(mp->port_num, txq->index);
971 val = (val & ~0xff) | (weight & 0xff);
976 /* mii management interface *************************************************/
977 #define SMI_BUSY 0x10000000
978 #define SMI_READ_VALID 0x08000000
979 #define SMI_OPCODE_READ 0x04000000
980 #define SMI_OPCODE_WRITE 0x00000000
982 static void smi_reg_read(struct mv643xx_eth_private *mp, unsigned int addr,
983 unsigned int reg, unsigned int *value)
985 void __iomem *smi_reg = mp->shared_smi->base + SMI_REG;
989 /* the SMI register is a shared resource */
990 spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
992 /* wait for the SMI register to become available */
993 for (i = 0; readl(smi_reg) & SMI_BUSY; i++) {
995 printk("%s: PHY busy timeout\n", mp->dev->name);
1001 writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg);
1003 /* now wait for the data to be valid */
1004 for (i = 0; !(readl(smi_reg) & SMI_READ_VALID); i++) {
1006 printk("%s: PHY read timeout\n", mp->dev->name);
1012 *value = readl(smi_reg) & 0xffff;
1014 spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
1017 static void smi_reg_write(struct mv643xx_eth_private *mp,
1019 unsigned int reg, unsigned int value)
1021 void __iomem *smi_reg = mp->shared_smi->base + SMI_REG;
1022 unsigned long flags;
1025 /* the SMI register is a shared resource */
1026 spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
1028 /* wait for the SMI register to become available */
1029 for (i = 0; readl(smi_reg) & SMI_BUSY; i++) {
1031 printk("%s: PHY busy timeout\n", mp->dev->name);
1037 writel(SMI_OPCODE_WRITE | (reg << 21) |
1038 (addr << 16) | (value & 0xffff), smi_reg);
1040 spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
1044 /* mib counters *************************************************************/
1045 static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset)
1047 return rdl(mp, MIB_COUNTERS(mp->port_num) + offset);
1050 static void mib_counters_clear(struct mv643xx_eth_private *mp)
1054 for (i = 0; i < 0x80; i += 4)
1058 static void mib_counters_update(struct mv643xx_eth_private *mp)
1060 struct mib_counters *p = &mp->mib_counters;
1062 p->good_octets_received += mib_read(mp, 0x00);
1063 p->good_octets_received += (u64)mib_read(mp, 0x04) << 32;
1064 p->bad_octets_received += mib_read(mp, 0x08);
1065 p->internal_mac_transmit_err += mib_read(mp, 0x0c);
1066 p->good_frames_received += mib_read(mp, 0x10);
1067 p->bad_frames_received += mib_read(mp, 0x14);
1068 p->broadcast_frames_received += mib_read(mp, 0x18);
1069 p->multicast_frames_received += mib_read(mp, 0x1c);
1070 p->frames_64_octets += mib_read(mp, 0x20);
1071 p->frames_65_to_127_octets += mib_read(mp, 0x24);
1072 p->frames_128_to_255_octets += mib_read(mp, 0x28);
1073 p->frames_256_to_511_octets += mib_read(mp, 0x2c);
1074 p->frames_512_to_1023_octets += mib_read(mp, 0x30);
1075 p->frames_1024_to_max_octets += mib_read(mp, 0x34);
1076 p->good_octets_sent += mib_read(mp, 0x38);
1077 p->good_octets_sent += (u64)mib_read(mp, 0x3c) << 32;
1078 p->good_frames_sent += mib_read(mp, 0x40);
1079 p->excessive_collision += mib_read(mp, 0x44);
1080 p->multicast_frames_sent += mib_read(mp, 0x48);
1081 p->broadcast_frames_sent += mib_read(mp, 0x4c);
1082 p->unrec_mac_control_received += mib_read(mp, 0x50);
1083 p->fc_sent += mib_read(mp, 0x54);
1084 p->good_fc_received += mib_read(mp, 0x58);
1085 p->bad_fc_received += mib_read(mp, 0x5c);
1086 p->undersize_received += mib_read(mp, 0x60);
1087 p->fragments_received += mib_read(mp, 0x64);
1088 p->oversize_received += mib_read(mp, 0x68);
1089 p->jabber_received += mib_read(mp, 0x6c);
1090 p->mac_receive_error += mib_read(mp, 0x70);
1091 p->bad_crc_event += mib_read(mp, 0x74);
1092 p->collision += mib_read(mp, 0x78);
1093 p->late_collision += mib_read(mp, 0x7c);
1097 /* ethtool ******************************************************************/
1098 struct mv643xx_eth_stats {
1099 char stat_string[ETH_GSTRING_LEN];
1106 { #m, FIELD_SIZEOF(struct net_device_stats, m), \
1107 offsetof(struct net_device, stats.m), -1 }
1109 #define MIBSTAT(m) \
1110 { #m, FIELD_SIZEOF(struct mib_counters, m), \
1111 -1, offsetof(struct mv643xx_eth_private, mib_counters.m) }
1113 static const struct mv643xx_eth_stats mv643xx_eth_stats[] = {
1122 MIBSTAT(good_octets_received),
1123 MIBSTAT(bad_octets_received),
1124 MIBSTAT(internal_mac_transmit_err),
1125 MIBSTAT(good_frames_received),
1126 MIBSTAT(bad_frames_received),
1127 MIBSTAT(broadcast_frames_received),
1128 MIBSTAT(multicast_frames_received),
1129 MIBSTAT(frames_64_octets),
1130 MIBSTAT(frames_65_to_127_octets),
1131 MIBSTAT(frames_128_to_255_octets),
1132 MIBSTAT(frames_256_to_511_octets),
1133 MIBSTAT(frames_512_to_1023_octets),
1134 MIBSTAT(frames_1024_to_max_octets),
1135 MIBSTAT(good_octets_sent),
1136 MIBSTAT(good_frames_sent),
1137 MIBSTAT(excessive_collision),
1138 MIBSTAT(multicast_frames_sent),
1139 MIBSTAT(broadcast_frames_sent),
1140 MIBSTAT(unrec_mac_control_received),
1142 MIBSTAT(good_fc_received),
1143 MIBSTAT(bad_fc_received),
1144 MIBSTAT(undersize_received),
1145 MIBSTAT(fragments_received),
1146 MIBSTAT(oversize_received),
1147 MIBSTAT(jabber_received),
1148 MIBSTAT(mac_receive_error),
1149 MIBSTAT(bad_crc_event),
1151 MIBSTAT(late_collision),
1154 static int mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1156 struct mv643xx_eth_private *mp = netdev_priv(dev);
1159 spin_lock_irq(&mp->lock);
1160 err = mii_ethtool_gset(&mp->mii, cmd);
1161 spin_unlock_irq(&mp->lock);
1164 * The MAC does not support 1000baseT_Half.
1166 cmd->supported &= ~SUPPORTED_1000baseT_Half;
1167 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
1172 static int mv643xx_eth_get_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd)
1174 struct mv643xx_eth_private *mp = netdev_priv(dev);
1177 port_status = rdl(mp, PORT_STATUS(mp->port_num));
1179 cmd->supported = SUPPORTED_MII;
1180 cmd->advertising = ADVERTISED_MII;
1181 switch (port_status & PORT_SPEED_MASK) {
1183 cmd->speed = SPEED_10;
1185 case PORT_SPEED_100:
1186 cmd->speed = SPEED_100;
1188 case PORT_SPEED_1000:
1189 cmd->speed = SPEED_1000;
1195 cmd->duplex = (port_status & FULL_DUPLEX) ? DUPLEX_FULL : DUPLEX_HALF;
1196 cmd->port = PORT_MII;
1197 cmd->phy_address = 0;
1198 cmd->transceiver = XCVR_INTERNAL;
1199 cmd->autoneg = AUTONEG_DISABLE;
1206 static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1208 struct mv643xx_eth_private *mp = netdev_priv(dev);
1212 * The MAC does not support 1000baseT_Half.
1214 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
1216 spin_lock_irq(&mp->lock);
1217 err = mii_ethtool_sset(&mp->mii, cmd);
1218 spin_unlock_irq(&mp->lock);
1223 static int mv643xx_eth_set_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd)
1228 static void mv643xx_eth_get_drvinfo(struct net_device *dev,
1229 struct ethtool_drvinfo *drvinfo)
1231 strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32);
1232 strncpy(drvinfo->version, mv643xx_eth_driver_version, 32);
1233 strncpy(drvinfo->fw_version, "N/A", 32);
1234 strncpy(drvinfo->bus_info, "platform", 32);
1235 drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats);
1238 static int mv643xx_eth_nway_reset(struct net_device *dev)
1240 struct mv643xx_eth_private *mp = netdev_priv(dev);
1242 return mii_nway_restart(&mp->mii);
1245 static int mv643xx_eth_nway_reset_phyless(struct net_device *dev)
1250 static u32 mv643xx_eth_get_link(struct net_device *dev)
1252 struct mv643xx_eth_private *mp = netdev_priv(dev);
1254 return mii_link_ok(&mp->mii);
1257 static u32 mv643xx_eth_get_link_phyless(struct net_device *dev)
1262 static void mv643xx_eth_get_strings(struct net_device *dev,
1263 uint32_t stringset, uint8_t *data)
1267 if (stringset == ETH_SS_STATS) {
1268 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
1269 memcpy(data + i * ETH_GSTRING_LEN,
1270 mv643xx_eth_stats[i].stat_string,
1276 static void mv643xx_eth_get_ethtool_stats(struct net_device *dev,
1277 struct ethtool_stats *stats,
1280 struct mv643xx_eth_private *mp = dev->priv;
1283 mib_counters_update(mp);
1285 for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
1286 const struct mv643xx_eth_stats *stat;
1289 stat = mv643xx_eth_stats + i;
1291 if (stat->netdev_off >= 0)
1292 p = ((void *)mp->dev) + stat->netdev_off;
1294 p = ((void *)mp) + stat->mp_off;
1296 data[i] = (stat->sizeof_stat == 8) ?
1297 *(uint64_t *)p : *(uint32_t *)p;
1301 static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset)
1303 if (sset == ETH_SS_STATS)
1304 return ARRAY_SIZE(mv643xx_eth_stats);
1309 static const struct ethtool_ops mv643xx_eth_ethtool_ops = {
1310 .get_settings = mv643xx_eth_get_settings,
1311 .set_settings = mv643xx_eth_set_settings,
1312 .get_drvinfo = mv643xx_eth_get_drvinfo,
1313 .nway_reset = mv643xx_eth_nway_reset,
1314 .get_link = mv643xx_eth_get_link,
1315 .set_sg = ethtool_op_set_sg,
1316 .get_strings = mv643xx_eth_get_strings,
1317 .get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
1318 .get_sset_count = mv643xx_eth_get_sset_count,
1321 static const struct ethtool_ops mv643xx_eth_ethtool_ops_phyless = {
1322 .get_settings = mv643xx_eth_get_settings_phyless,
1323 .set_settings = mv643xx_eth_set_settings_phyless,
1324 .get_drvinfo = mv643xx_eth_get_drvinfo,
1325 .nway_reset = mv643xx_eth_nway_reset_phyless,
1326 .get_link = mv643xx_eth_get_link_phyless,
1327 .set_sg = ethtool_op_set_sg,
1328 .get_strings = mv643xx_eth_get_strings,
1329 .get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
1330 .get_sset_count = mv643xx_eth_get_sset_count,
1334 /* address handling *********************************************************/
1335 static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr)
1340 mac_h = rdl(mp, MAC_ADDR_HIGH(mp->port_num));
1341 mac_l = rdl(mp, MAC_ADDR_LOW(mp->port_num));
1343 addr[0] = (mac_h >> 24) & 0xff;
1344 addr[1] = (mac_h >> 16) & 0xff;
1345 addr[2] = (mac_h >> 8) & 0xff;
1346 addr[3] = mac_h & 0xff;
1347 addr[4] = (mac_l >> 8) & 0xff;
1348 addr[5] = mac_l & 0xff;
1351 static void init_mac_tables(struct mv643xx_eth_private *mp)
1355 for (i = 0; i < 0x100; i += 4) {
1356 wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0);
1357 wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0);
1360 for (i = 0; i < 0x10; i += 4)
1361 wrl(mp, UNICAST_TABLE(mp->port_num) + i, 0);
1364 static void set_filter_table_entry(struct mv643xx_eth_private *mp,
1365 int table, unsigned char entry)
1367 unsigned int table_reg;
1369 /* Set "accepts frame bit" at specified table entry */
1370 table_reg = rdl(mp, table + (entry & 0xfc));
1371 table_reg |= 0x01 << (8 * (entry & 3));
1372 wrl(mp, table + (entry & 0xfc), table_reg);
1375 static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr)
1381 mac_l = (addr[4] << 8) | addr[5];
1382 mac_h = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3];
1384 wrl(mp, MAC_ADDR_LOW(mp->port_num), mac_l);
1385 wrl(mp, MAC_ADDR_HIGH(mp->port_num), mac_h);
1387 table = UNICAST_TABLE(mp->port_num);
1388 set_filter_table_entry(mp, table, addr[5] & 0x0f);
1391 static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
1393 struct mv643xx_eth_private *mp = netdev_priv(dev);
1395 /* +2 is for the offset of the HW addr type */
1396 memcpy(dev->dev_addr, addr + 2, 6);
1398 init_mac_tables(mp);
1399 uc_addr_set(mp, dev->dev_addr);
1404 static int addr_crc(unsigned char *addr)
1409 for (i = 0; i < 6; i++) {
1412 crc = (crc ^ addr[i]) << 8;
1413 for (j = 7; j >= 0; j--) {
1414 if (crc & (0x100 << j))
1422 static void mv643xx_eth_set_rx_mode(struct net_device *dev)
1424 struct mv643xx_eth_private *mp = netdev_priv(dev);
1426 struct dev_addr_list *addr;
1429 port_config = rdl(mp, PORT_CONFIG(mp->port_num));
1430 if (dev->flags & IFF_PROMISC)
1431 port_config |= UNICAST_PROMISCUOUS_MODE;
1433 port_config &= ~UNICAST_PROMISCUOUS_MODE;
1434 wrl(mp, PORT_CONFIG(mp->port_num), port_config);
1436 if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) {
1437 int port_num = mp->port_num;
1438 u32 accept = 0x01010101;
1440 for (i = 0; i < 0x100; i += 4) {
1441 wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept);
1442 wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept);
1447 for (i = 0; i < 0x100; i += 4) {
1448 wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0);
1449 wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0);
1452 for (addr = dev->mc_list; addr != NULL; addr = addr->next) {
1453 u8 *a = addr->da_addr;
1456 if (addr->da_addrlen != 6)
1459 if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) {
1460 table = SPECIAL_MCAST_TABLE(mp->port_num);
1461 set_filter_table_entry(mp, table, a[5]);
1463 int crc = addr_crc(a);
1465 table = OTHER_MCAST_TABLE(mp->port_num);
1466 set_filter_table_entry(mp, table, crc);
1472 /* rx/tx queue initialisation ***********************************************/
1473 static int rxq_init(struct mv643xx_eth_private *mp, int index)
1475 struct rx_queue *rxq = mp->rxq + index;
1476 struct rx_desc *rx_desc;
1482 rxq->rx_ring_size = mp->default_rx_ring_size;
1484 rxq->rx_desc_count = 0;
1485 rxq->rx_curr_desc = 0;
1486 rxq->rx_used_desc = 0;
1488 size = rxq->rx_ring_size * sizeof(struct rx_desc);
1490 if (index == mp->rxq_primary && size <= mp->rx_desc_sram_size) {
1491 rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr,
1492 mp->rx_desc_sram_size);
1493 rxq->rx_desc_dma = mp->rx_desc_sram_addr;
1495 rxq->rx_desc_area = dma_alloc_coherent(NULL, size,
1500 if (rxq->rx_desc_area == NULL) {
1501 dev_printk(KERN_ERR, &mp->dev->dev,
1502 "can't allocate rx ring (%d bytes)\n", size);
1505 memset(rxq->rx_desc_area, 0, size);
1507 rxq->rx_desc_area_size = size;
1508 rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb),
1510 if (rxq->rx_skb == NULL) {
1511 dev_printk(KERN_ERR, &mp->dev->dev,
1512 "can't allocate rx skb ring\n");
1516 rx_desc = (struct rx_desc *)rxq->rx_desc_area;
1517 for (i = 0; i < rxq->rx_ring_size; i++) {
1518 int nexti = (i + 1) % rxq->rx_ring_size;
1519 rx_desc[i].next_desc_ptr = rxq->rx_desc_dma +
1520 nexti * sizeof(struct rx_desc);
1523 init_timer(&rxq->rx_oom);
1524 rxq->rx_oom.data = (unsigned long)rxq;
1525 rxq->rx_oom.function = rxq_refill_timer_wrapper;
1531 if (index == mp->rxq_primary && size <= mp->rx_desc_sram_size)
1532 iounmap(rxq->rx_desc_area);
1534 dma_free_coherent(NULL, size,
1542 static void rxq_deinit(struct rx_queue *rxq)
1544 struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
1549 del_timer_sync(&rxq->rx_oom);
1551 for (i = 0; i < rxq->rx_ring_size; i++) {
1552 if (rxq->rx_skb[i]) {
1553 dev_kfree_skb(rxq->rx_skb[i]);
1554 rxq->rx_desc_count--;
1558 if (rxq->rx_desc_count) {
1559 dev_printk(KERN_ERR, &mp->dev->dev,
1560 "error freeing rx ring -- %d skbs stuck\n",
1561 rxq->rx_desc_count);
1564 if (rxq->index == mp->rxq_primary &&
1565 rxq->rx_desc_area_size <= mp->rx_desc_sram_size)
1566 iounmap(rxq->rx_desc_area);
1568 dma_free_coherent(NULL, rxq->rx_desc_area_size,
1569 rxq->rx_desc_area, rxq->rx_desc_dma);
1574 static int txq_init(struct mv643xx_eth_private *mp, int index)
1576 struct tx_queue *txq = mp->txq + index;
1577 struct tx_desc *tx_desc;
1583 txq->tx_ring_size = mp->default_tx_ring_size;
1585 txq->tx_desc_count = 0;
1586 txq->tx_curr_desc = 0;
1587 txq->tx_used_desc = 0;
1589 size = txq->tx_ring_size * sizeof(struct tx_desc);
1591 if (index == mp->txq_primary && size <= mp->tx_desc_sram_size) {
1592 txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr,
1593 mp->tx_desc_sram_size);
1594 txq->tx_desc_dma = mp->tx_desc_sram_addr;
1596 txq->tx_desc_area = dma_alloc_coherent(NULL, size,
1601 if (txq->tx_desc_area == NULL) {
1602 dev_printk(KERN_ERR, &mp->dev->dev,
1603 "can't allocate tx ring (%d bytes)\n", size);
1606 memset(txq->tx_desc_area, 0, size);
1608 txq->tx_desc_area_size = size;
1609 txq->tx_skb = kmalloc(txq->tx_ring_size * sizeof(*txq->tx_skb),
1611 if (txq->tx_skb == NULL) {
1612 dev_printk(KERN_ERR, &mp->dev->dev,
1613 "can't allocate tx skb ring\n");
1617 tx_desc = (struct tx_desc *)txq->tx_desc_area;
1618 for (i = 0; i < txq->tx_ring_size; i++) {
1619 struct tx_desc *txd = tx_desc + i;
1620 int nexti = (i + 1) % txq->tx_ring_size;
1623 txd->next_desc_ptr = txq->tx_desc_dma +
1624 nexti * sizeof(struct tx_desc);
1631 if (index == mp->txq_primary && size <= mp->tx_desc_sram_size)
1632 iounmap(txq->tx_desc_area);
1634 dma_free_coherent(NULL, size,
1642 static void txq_reclaim(struct tx_queue *txq, int force)
1644 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1645 unsigned long flags;
1647 spin_lock_irqsave(&mp->lock, flags);
1648 while (txq->tx_desc_count > 0) {
1650 struct tx_desc *desc;
1652 struct sk_buff *skb;
1656 tx_index = txq->tx_used_desc;
1657 desc = &txq->tx_desc_area[tx_index];
1658 cmd_sts = desc->cmd_sts;
1660 if (cmd_sts & BUFFER_OWNED_BY_DMA) {
1663 desc->cmd_sts = cmd_sts & ~BUFFER_OWNED_BY_DMA;
1666 txq->tx_used_desc = (tx_index + 1) % txq->tx_ring_size;
1667 txq->tx_desc_count--;
1669 addr = desc->buf_ptr;
1670 count = desc->byte_cnt;
1671 skb = txq->tx_skb[tx_index];
1672 txq->tx_skb[tx_index] = NULL;
1674 if (cmd_sts & ERROR_SUMMARY) {
1675 dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n");
1676 mp->dev->stats.tx_errors++;
1680 * Drop mp->lock while we free the skb.
1682 spin_unlock_irqrestore(&mp->lock, flags);
1684 if (cmd_sts & TX_FIRST_DESC)
1685 dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE);
1687 dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE);
1690 dev_kfree_skb_irq(skb);
1692 spin_lock_irqsave(&mp->lock, flags);
1694 spin_unlock_irqrestore(&mp->lock, flags);
1697 static void txq_deinit(struct tx_queue *txq)
1699 struct mv643xx_eth_private *mp = txq_to_mp(txq);
1702 txq_reclaim(txq, 1);
1704 BUG_ON(txq->tx_used_desc != txq->tx_curr_desc);
1706 if (txq->index == mp->txq_primary &&
1707 txq->tx_desc_area_size <= mp->tx_desc_sram_size)
1708 iounmap(txq->tx_desc_area);
1710 dma_free_coherent(NULL, txq->tx_desc_area_size,
1711 txq->tx_desc_area, txq->tx_desc_dma);
1717 /* netdev ops and related ***************************************************/
1718 static void handle_link_event(struct mv643xx_eth_private *mp)
1720 struct net_device *dev = mp->dev;
1726 port_status = rdl(mp, PORT_STATUS(mp->port_num));
1727 if (!(port_status & LINK_UP)) {
1728 if (netif_carrier_ok(dev)) {
1731 printk(KERN_INFO "%s: link down\n", dev->name);
1733 netif_carrier_off(dev);
1734 netif_stop_queue(dev);
1736 for (i = 0; i < 8; i++) {
1737 struct tx_queue *txq = mp->txq + i;
1739 if (mp->txq_mask & (1 << i)) {
1740 txq_reclaim(txq, 1);
1741 txq_reset_hw_ptr(txq);
1748 switch (port_status & PORT_SPEED_MASK) {
1752 case PORT_SPEED_100:
1755 case PORT_SPEED_1000:
1762 duplex = (port_status & FULL_DUPLEX) ? 1 : 0;
1763 fc = (port_status & FLOW_CONTROL_ENABLED) ? 1 : 0;
1765 printk(KERN_INFO "%s: link up, %d Mb/s, %s duplex, "
1766 "flow control %sabled\n", dev->name,
1767 speed, duplex ? "full" : "half",
1770 if (!netif_carrier_ok(dev)) {
1771 netif_carrier_on(dev);
1772 netif_wake_queue(dev);
1776 static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id)
1778 struct net_device *dev = (struct net_device *)dev_id;
1779 struct mv643xx_eth_private *mp = netdev_priv(dev);
1783 int_cause = rdl(mp, INT_CAUSE(mp->port_num)) &
1784 (INT_TX_END | INT_RX | INT_EXT);
1789 if (int_cause & INT_EXT) {
1790 int_cause_ext = rdl(mp, INT_CAUSE_EXT(mp->port_num))
1791 & (INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
1792 wrl(mp, INT_CAUSE_EXT(mp->port_num), ~int_cause_ext);
1795 if (int_cause_ext & (INT_EXT_PHY | INT_EXT_LINK))
1796 handle_link_event(mp);
1799 * RxBuffer or RxError set for any of the 8 queues?
1801 #ifdef MV643XX_ETH_NAPI
1802 if (int_cause & INT_RX) {
1803 wrl(mp, INT_CAUSE(mp->port_num), ~(int_cause & INT_RX));
1804 wrl(mp, INT_MASK(mp->port_num), 0x00000000);
1805 rdl(mp, INT_MASK(mp->port_num));
1807 netif_rx_schedule(dev, &mp->napi);
1810 if (int_cause & INT_RX) {
1813 for (i = 7; i >= 0; i--)
1814 if (mp->rxq_mask & (1 << i))
1815 rxq_process(mp->rxq + i, INT_MAX);
1820 * TxBuffer or TxError set for any of the 8 queues?
1822 if (int_cause_ext & INT_EXT_TX) {
1825 for (i = 0; i < 8; i++)
1826 if (mp->txq_mask & (1 << i))
1827 txq_reclaim(mp->txq + i, 0);
1830 * Enough space again in the primary TX queue for a
1833 if (netif_carrier_ok(dev)) {
1834 spin_lock(&mp->lock);
1835 __txq_maybe_wake(mp->txq + mp->txq_primary);
1836 spin_unlock(&mp->lock);
1841 * Any TxEnd interrupts?
1843 if (int_cause & INT_TX_END) {
1846 wrl(mp, INT_CAUSE(mp->port_num), ~(int_cause & INT_TX_END));
1848 spin_lock(&mp->lock);
1849 for (i = 0; i < 8; i++) {
1850 struct tx_queue *txq = mp->txq + i;
1854 if ((int_cause & (INT_TX_END_0 << i)) == 0)
1858 rdl(mp, TXQ_CURRENT_DESC_PTR(mp->port_num, i));
1859 expected_ptr = (u32)txq->tx_desc_dma +
1860 txq->tx_curr_desc * sizeof(struct tx_desc);
1862 if (hw_desc_ptr != expected_ptr)
1865 spin_unlock(&mp->lock);
1871 static void phy_reset(struct mv643xx_eth_private *mp)
1875 smi_reg_read(mp, mp->phy_addr, MII_BMCR, &data);
1877 smi_reg_write(mp, mp->phy_addr, MII_BMCR, data);
1881 smi_reg_read(mp, mp->phy_addr, MII_BMCR, &data);
1882 } while (data & BMCR_RESET);
1885 static void port_start(struct mv643xx_eth_private *mp)
1891 * Perform PHY reset, if there is a PHY.
1893 if (mp->phy_addr != -1) {
1894 struct ethtool_cmd cmd;
1896 mv643xx_eth_get_settings(mp->dev, &cmd);
1898 mv643xx_eth_set_settings(mp->dev, &cmd);
1902 * Configure basic link parameters.
1904 pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
1906 pscr |= SERIAL_PORT_ENABLE;
1907 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
1909 pscr |= DO_NOT_FORCE_LINK_FAIL;
1910 if (mp->phy_addr == -1)
1911 pscr |= FORCE_LINK_PASS;
1912 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
1914 wrl(mp, SDMA_CONFIG(mp->port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE);
1917 * Configure TX path and queues.
1919 tx_set_rate(mp, 1000000000, 16777216);
1920 for (i = 0; i < 8; i++) {
1921 struct tx_queue *txq = mp->txq + i;
1923 if ((mp->txq_mask & (1 << i)) == 0)
1926 txq_reset_hw_ptr(txq);
1927 txq_set_rate(txq, 1000000000, 16777216);
1928 txq_set_fixed_prio_mode(txq);
1932 * Add configured unicast address to address filter table.
1934 uc_addr_set(mp, mp->dev->dev_addr);
1937 * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast
1938 * frames to RX queue #0.
1940 wrl(mp, PORT_CONFIG(mp->port_num), 0x00000000);
1943 * Treat BPDUs as normal multicasts, and disable partition mode.
1945 wrl(mp, PORT_CONFIG_EXT(mp->port_num), 0x00000000);
1948 * Enable the receive queues.
1950 for (i = 0; i < 8; i++) {
1951 struct rx_queue *rxq = mp->rxq + i;
1952 int off = RXQ_CURRENT_DESC_PTR(mp->port_num, i);
1955 if ((mp->rxq_mask & (1 << i)) == 0)
1958 addr = (u32)rxq->rx_desc_dma;
1959 addr += rxq->rx_curr_desc * sizeof(struct rx_desc);
1966 static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int delay)
1968 unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
1971 val = rdl(mp, SDMA_CONFIG(mp->port_num));
1972 if (mp->shared->extended_rx_coal_limit) {
1976 val |= (coal & 0x8000) << 10;
1977 val |= (coal & 0x7fff) << 7;
1982 val |= (coal & 0x3fff) << 8;
1984 wrl(mp, SDMA_CONFIG(mp->port_num), val);
1987 static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int delay)
1989 unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
1993 wrl(mp, TX_FIFO_URGENT_THRESHOLD(mp->port_num), (coal & 0x3fff) << 4);
1996 static int mv643xx_eth_open(struct net_device *dev)
1998 struct mv643xx_eth_private *mp = netdev_priv(dev);
2002 wrl(mp, INT_CAUSE(mp->port_num), 0);
2003 wrl(mp, INT_CAUSE_EXT(mp->port_num), 0);
2004 rdl(mp, INT_CAUSE_EXT(mp->port_num));
2006 err = request_irq(dev->irq, mv643xx_eth_irq,
2007 IRQF_SHARED | IRQF_SAMPLE_RANDOM,
2010 dev_printk(KERN_ERR, &dev->dev, "can't assign irq\n");
2014 init_mac_tables(mp);
2016 for (i = 0; i < 8; i++) {
2017 if ((mp->rxq_mask & (1 << i)) == 0)
2020 err = rxq_init(mp, i);
2023 if (mp->rxq_mask & (1 << i))
2024 rxq_deinit(mp->rxq + i);
2028 rxq_refill(mp->rxq + i);
2031 for (i = 0; i < 8; i++) {
2032 if ((mp->txq_mask & (1 << i)) == 0)
2035 err = txq_init(mp, i);
2038 if (mp->txq_mask & (1 << i))
2039 txq_deinit(mp->txq + i);
2044 #ifdef MV643XX_ETH_NAPI
2045 napi_enable(&mp->napi);
2048 netif_carrier_off(dev);
2049 netif_stop_queue(dev);
2056 wrl(mp, INT_MASK_EXT(mp->port_num),
2057 INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
2059 wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
2065 for (i = 0; i < 8; i++)
2066 if (mp->rxq_mask & (1 << i))
2067 rxq_deinit(mp->rxq + i);
2069 free_irq(dev->irq, dev);
2074 static void port_reset(struct mv643xx_eth_private *mp)
2079 for (i = 0; i < 8; i++) {
2080 if (mp->rxq_mask & (1 << i))
2081 rxq_disable(mp->rxq + i);
2082 if (mp->txq_mask & (1 << i))
2083 txq_disable(mp->txq + i);
2087 u32 ps = rdl(mp, PORT_STATUS(mp->port_num));
2089 if ((ps & (TX_IN_PROGRESS | TX_FIFO_EMPTY)) == TX_FIFO_EMPTY)
2094 /* Reset the Enable bit in the Configuration Register */
2095 data = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
2096 data &= ~(SERIAL_PORT_ENABLE |
2097 DO_NOT_FORCE_LINK_FAIL |
2099 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), data);
2102 static int mv643xx_eth_stop(struct net_device *dev)
2104 struct mv643xx_eth_private *mp = netdev_priv(dev);
2107 wrl(mp, INT_MASK(mp->port_num), 0x00000000);
2108 rdl(mp, INT_MASK(mp->port_num));
2110 #ifdef MV643XX_ETH_NAPI
2111 napi_disable(&mp->napi);
2113 netif_carrier_off(dev);
2114 netif_stop_queue(dev);
2116 free_irq(dev->irq, dev);
2119 mib_counters_update(mp);
2121 for (i = 0; i < 8; i++) {
2122 if (mp->rxq_mask & (1 << i))
2123 rxq_deinit(mp->rxq + i);
2124 if (mp->txq_mask & (1 << i))
2125 txq_deinit(mp->txq + i);
2131 static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2133 struct mv643xx_eth_private *mp = netdev_priv(dev);
2135 if (mp->phy_addr != -1)
2136 return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL);
2141 static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
2143 struct mv643xx_eth_private *mp = netdev_priv(dev);
2145 if (new_mtu < 64 || new_mtu > 9500)
2149 tx_set_rate(mp, 1000000000, 16777216);
2151 if (!netif_running(dev))
2155 * Stop and then re-open the interface. This will allocate RX
2156 * skbs of the new MTU.
2157 * There is a possible danger that the open will not succeed,
2158 * due to memory being full.
2160 mv643xx_eth_stop(dev);
2161 if (mv643xx_eth_open(dev)) {
2162 dev_printk(KERN_ERR, &dev->dev,
2163 "fatal error on re-opening device after "
2170 static void tx_timeout_task(struct work_struct *ugly)
2172 struct mv643xx_eth_private *mp;
2174 mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task);
2175 if (netif_running(mp->dev)) {
2176 netif_stop_queue(mp->dev);
2181 __txq_maybe_wake(mp->txq + mp->txq_primary);
2185 static void mv643xx_eth_tx_timeout(struct net_device *dev)
2187 struct mv643xx_eth_private *mp = netdev_priv(dev);
2189 dev_printk(KERN_INFO, &dev->dev, "tx timeout\n");
2191 schedule_work(&mp->tx_timeout_task);
2194 #ifdef CONFIG_NET_POLL_CONTROLLER
2195 static void mv643xx_eth_netpoll(struct net_device *dev)
2197 struct mv643xx_eth_private *mp = netdev_priv(dev);
2199 wrl(mp, INT_MASK(mp->port_num), 0x00000000);
2200 rdl(mp, INT_MASK(mp->port_num));
2202 mv643xx_eth_irq(dev->irq, dev);
2204 wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
2208 static int mv643xx_eth_mdio_read(struct net_device *dev, int addr, int reg)
2210 struct mv643xx_eth_private *mp = netdev_priv(dev);
2213 smi_reg_read(mp, addr, reg, &val);
2218 static void mv643xx_eth_mdio_write(struct net_device *dev, int addr, int reg, int val)
2220 struct mv643xx_eth_private *mp = netdev_priv(dev);
2221 smi_reg_write(mp, addr, reg, val);
2225 /* platform glue ************************************************************/
2227 mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp,
2228 struct mbus_dram_target_info *dram)
2230 void __iomem *base = msp->base;
2235 for (i = 0; i < 6; i++) {
2236 writel(0, base + WINDOW_BASE(i));
2237 writel(0, base + WINDOW_SIZE(i));
2239 writel(0, base + WINDOW_REMAP_HIGH(i));
2245 for (i = 0; i < dram->num_cs; i++) {
2246 struct mbus_dram_window *cs = dram->cs + i;
2248 writel((cs->base & 0xffff0000) |
2249 (cs->mbus_attr << 8) |
2250 dram->mbus_dram_target_id, base + WINDOW_BASE(i));
2251 writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i));
2253 win_enable &= ~(1 << i);
2254 win_protect |= 3 << (2 * i);
2257 writel(win_enable, base + WINDOW_BAR_ENABLE);
2258 msp->win_protect = win_protect;
2261 static void infer_hw_params(struct mv643xx_eth_shared_private *msp)
2264 * Check whether we have a 14-bit coal limit field in bits
2265 * [21:8], or a 16-bit coal limit in bits [25,21:7] of the
2266 * SDMA config register.
2268 writel(0x02000000, msp->base + SDMA_CONFIG(0));
2269 if (readl(msp->base + SDMA_CONFIG(0)) & 0x02000000)
2270 msp->extended_rx_coal_limit = 1;
2272 msp->extended_rx_coal_limit = 0;
2275 * Check whether the TX rate control registers are in the
2276 * old or the new place.
2278 writel(1, msp->base + TX_BW_MTU_MOVED(0));
2279 if (readl(msp->base + TX_BW_MTU_MOVED(0)) & 1)
2280 msp->tx_bw_control_moved = 1;
2282 msp->tx_bw_control_moved = 0;
2285 static int mv643xx_eth_shared_probe(struct platform_device *pdev)
2287 static int mv643xx_eth_version_printed = 0;
2288 struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
2289 struct mv643xx_eth_shared_private *msp;
2290 struct resource *res;
2293 if (!mv643xx_eth_version_printed++)
2294 printk(KERN_NOTICE "MV-643xx 10/100/1000 ethernet "
2295 "driver version %s\n", mv643xx_eth_driver_version);
2298 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2303 msp = kmalloc(sizeof(*msp), GFP_KERNEL);
2306 memset(msp, 0, sizeof(*msp));
2308 msp->base = ioremap(res->start, res->end - res->start + 1);
2309 if (msp->base == NULL)
2312 spin_lock_init(&msp->phy_lock);
2315 * (Re-)program MBUS remapping windows if we are asked to.
2317 if (pd != NULL && pd->dram != NULL)
2318 mv643xx_eth_conf_mbus_windows(msp, pd->dram);
2321 * Detect hardware parameters.
2323 msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
2324 infer_hw_params(msp);
2326 platform_set_drvdata(pdev, msp);
2336 static int mv643xx_eth_shared_remove(struct platform_device *pdev)
2338 struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev);
2346 static struct platform_driver mv643xx_eth_shared_driver = {
2347 .probe = mv643xx_eth_shared_probe,
2348 .remove = mv643xx_eth_shared_remove,
2350 .name = MV643XX_ETH_SHARED_NAME,
2351 .owner = THIS_MODULE,
2355 static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr)
2357 int addr_shift = 5 * mp->port_num;
2360 data = rdl(mp, PHY_ADDR);
2361 data &= ~(0x1f << addr_shift);
2362 data |= (phy_addr & 0x1f) << addr_shift;
2363 wrl(mp, PHY_ADDR, data);
2366 static int phy_addr_get(struct mv643xx_eth_private *mp)
2370 data = rdl(mp, PHY_ADDR);
2372 return (data >> (5 * mp->port_num)) & 0x1f;
2375 static void set_params(struct mv643xx_eth_private *mp,
2376 struct mv643xx_eth_platform_data *pd)
2378 struct net_device *dev = mp->dev;
2380 if (is_valid_ether_addr(pd->mac_addr))
2381 memcpy(dev->dev_addr, pd->mac_addr, 6);
2383 uc_addr_get(mp, dev->dev_addr);
2385 if (pd->phy_addr == -1) {
2386 mp->shared_smi = NULL;
2389 mp->shared_smi = mp->shared;
2390 if (pd->shared_smi != NULL)
2391 mp->shared_smi = platform_get_drvdata(pd->shared_smi);
2393 if (pd->force_phy_addr || pd->phy_addr) {
2394 mp->phy_addr = pd->phy_addr & 0x3f;
2395 phy_addr_set(mp, mp->phy_addr);
2397 mp->phy_addr = phy_addr_get(mp);
2401 mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE;
2402 if (pd->rx_queue_size)
2403 mp->default_rx_ring_size = pd->rx_queue_size;
2404 mp->rx_desc_sram_addr = pd->rx_sram_addr;
2405 mp->rx_desc_sram_size = pd->rx_sram_size;
2407 if (pd->rx_queue_mask)
2408 mp->rxq_mask = pd->rx_queue_mask;
2410 mp->rxq_mask = 0x01;
2411 mp->rxq_primary = fls(mp->rxq_mask) - 1;
2413 mp->default_tx_ring_size = DEFAULT_TX_QUEUE_SIZE;
2414 if (pd->tx_queue_size)
2415 mp->default_tx_ring_size = pd->tx_queue_size;
2416 mp->tx_desc_sram_addr = pd->tx_sram_addr;
2417 mp->tx_desc_sram_size = pd->tx_sram_size;
2419 if (pd->tx_queue_mask)
2420 mp->txq_mask = pd->tx_queue_mask;
2422 mp->txq_mask = 0x01;
2423 mp->txq_primary = fls(mp->txq_mask) - 1;
2426 static int phy_detect(struct mv643xx_eth_private *mp)
2431 smi_reg_read(mp, mp->phy_addr, MII_BMCR, &data);
2432 smi_reg_write(mp, mp->phy_addr, MII_BMCR, data ^ BMCR_ANENABLE);
2434 smi_reg_read(mp, mp->phy_addr, MII_BMCR, &data2);
2435 if (((data ^ data2) & BMCR_ANENABLE) == 0)
2438 smi_reg_write(mp, mp->phy_addr, MII_BMCR, data);
2443 static int phy_init(struct mv643xx_eth_private *mp,
2444 struct mv643xx_eth_platform_data *pd)
2446 struct ethtool_cmd cmd;
2449 err = phy_detect(mp);
2451 dev_printk(KERN_INFO, &mp->dev->dev,
2452 "no PHY detected at addr %d\n", mp->phy_addr);
2457 mp->mii.phy_id = mp->phy_addr;
2458 mp->mii.phy_id_mask = 0x3f;
2459 mp->mii.reg_num_mask = 0x1f;
2460 mp->mii.dev = mp->dev;
2461 mp->mii.mdio_read = mv643xx_eth_mdio_read;
2462 mp->mii.mdio_write = mv643xx_eth_mdio_write;
2464 mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii);
2466 memset(&cmd, 0, sizeof(cmd));
2468 cmd.port = PORT_MII;
2469 cmd.transceiver = XCVR_INTERNAL;
2470 cmd.phy_address = mp->phy_addr;
2471 if (pd->speed == 0) {
2472 cmd.autoneg = AUTONEG_ENABLE;
2473 cmd.speed = SPEED_100;
2474 cmd.advertising = ADVERTISED_10baseT_Half |
2475 ADVERTISED_10baseT_Full |
2476 ADVERTISED_100baseT_Half |
2477 ADVERTISED_100baseT_Full;
2478 if (mp->mii.supports_gmii)
2479 cmd.advertising |= ADVERTISED_1000baseT_Full;
2481 cmd.autoneg = AUTONEG_DISABLE;
2482 cmd.speed = pd->speed;
2483 cmd.duplex = pd->duplex;
2486 mv643xx_eth_set_settings(mp->dev, &cmd);
2491 static void init_pscr(struct mv643xx_eth_private *mp, int speed, int duplex)
2495 pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
2496 if (pscr & SERIAL_PORT_ENABLE) {
2497 pscr &= ~SERIAL_PORT_ENABLE;
2498 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
2501 pscr = MAX_RX_PACKET_9700BYTE | SERIAL_PORT_CONTROL_RESERVED;
2502 if (mp->phy_addr == -1) {
2503 pscr |= DISABLE_AUTO_NEG_SPEED_GMII;
2504 if (speed == SPEED_1000)
2505 pscr |= SET_GMII_SPEED_TO_1000;
2506 else if (speed == SPEED_100)
2507 pscr |= SET_MII_SPEED_TO_100;
2509 pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL;
2511 pscr |= DISABLE_AUTO_NEG_FOR_DUPLEX;
2512 if (duplex == DUPLEX_FULL)
2513 pscr |= SET_FULL_DUPLEX_MODE;
2516 wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
2519 static int mv643xx_eth_probe(struct platform_device *pdev)
2521 struct mv643xx_eth_platform_data *pd;
2522 struct mv643xx_eth_private *mp;
2523 struct net_device *dev;
2524 struct resource *res;
2525 DECLARE_MAC_BUF(mac);
2528 pd = pdev->dev.platform_data;
2530 dev_printk(KERN_ERR, &pdev->dev,
2531 "no mv643xx_eth_platform_data\n");
2535 if (pd->shared == NULL) {
2536 dev_printk(KERN_ERR, &pdev->dev,
2537 "no mv643xx_eth_platform_data->shared\n");
2541 dev = alloc_etherdev(sizeof(struct mv643xx_eth_private));
2545 mp = netdev_priv(dev);
2546 platform_set_drvdata(pdev, mp);
2548 mp->shared = platform_get_drvdata(pd->shared);
2549 mp->port_num = pd->port_number;
2552 #ifdef MV643XX_ETH_NAPI
2553 netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 64);
2558 spin_lock_init(&mp->lock);
2560 mib_counters_clear(mp);
2561 INIT_WORK(&mp->tx_timeout_task, tx_timeout_task);
2563 if (mp->phy_addr != -1) {
2564 err = phy_init(mp, pd);
2568 SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops);
2570 SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops_phyless);
2572 init_pscr(mp, pd->speed, pd->duplex);
2575 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2577 dev->irq = res->start;
2579 dev->hard_start_xmit = mv643xx_eth_xmit;
2580 dev->open = mv643xx_eth_open;
2581 dev->stop = mv643xx_eth_stop;
2582 dev->set_multicast_list = mv643xx_eth_set_rx_mode;
2583 dev->set_mac_address = mv643xx_eth_set_mac_address;
2584 dev->do_ioctl = mv643xx_eth_ioctl;
2585 dev->change_mtu = mv643xx_eth_change_mtu;
2586 dev->tx_timeout = mv643xx_eth_tx_timeout;
2587 #ifdef CONFIG_NET_POLL_CONTROLLER
2588 dev->poll_controller = mv643xx_eth_netpoll;
2590 dev->watchdog_timeo = 2 * HZ;
2593 #ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX
2595 * Zero copy can only work if we use Discovery II memory. Else, we will
2596 * have to map the buffers to ISA memory which is only 16 MB
2598 dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
2599 dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM;
2602 SET_NETDEV_DEV(dev, &pdev->dev);
2604 if (mp->shared->win_protect)
2605 wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect);
2607 err = register_netdev(dev);
2611 dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %s\n",
2612 mp->port_num, print_mac(mac, dev->dev_addr));
2614 if (dev->features & NETIF_F_SG)
2615 dev_printk(KERN_NOTICE, &dev->dev, "scatter/gather enabled\n");
2617 if (dev->features & NETIF_F_IP_CSUM)
2618 dev_printk(KERN_NOTICE, &dev->dev, "tx checksum offload\n");
2620 #ifdef MV643XX_ETH_NAPI
2621 dev_printk(KERN_NOTICE, &dev->dev, "napi enabled\n");
2624 if (mp->tx_desc_sram_size > 0)
2625 dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n");
2635 static int mv643xx_eth_remove(struct platform_device *pdev)
2637 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
2639 unregister_netdev(mp->dev);
2640 flush_scheduled_work();
2641 free_netdev(mp->dev);
2643 platform_set_drvdata(pdev, NULL);
2648 static void mv643xx_eth_shutdown(struct platform_device *pdev)
2650 struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
2652 /* Mask all interrupts on ethernet port */
2653 wrl(mp, INT_MASK(mp->port_num), 0);
2654 rdl(mp, INT_MASK(mp->port_num));
2656 if (netif_running(mp->dev))
2660 static struct platform_driver mv643xx_eth_driver = {
2661 .probe = mv643xx_eth_probe,
2662 .remove = mv643xx_eth_remove,
2663 .shutdown = mv643xx_eth_shutdown,
2665 .name = MV643XX_ETH_NAME,
2666 .owner = THIS_MODULE,
2670 static int __init mv643xx_eth_init_module(void)
2674 rc = platform_driver_register(&mv643xx_eth_shared_driver);
2676 rc = platform_driver_register(&mv643xx_eth_driver);
2678 platform_driver_unregister(&mv643xx_eth_shared_driver);
2683 module_init(mv643xx_eth_init_module);
2685 static void __exit mv643xx_eth_cleanup_module(void)
2687 platform_driver_unregister(&mv643xx_eth_driver);
2688 platform_driver_unregister(&mv643xx_eth_shared_driver);
2690 module_exit(mv643xx_eth_cleanup_module);
2692 MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, "
2693 "Manish Lachwani, Dale Farnsworth and Lennert Buytenhek");
2694 MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
2695 MODULE_LICENSE("GPL");
2696 MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME);
2697 MODULE_ALIAS("platform:" MV643XX_ETH_NAME);