blob: ab15ecd4b3d64411c7b2a8e5f322aa1a50985d68 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * drivers/net/mv643xx_eth.c - Driver for MV643XX ethernet ports
3 * Copyright (C) 2002 Matthew Dharm <mdharm@momenco.com>
4 *
5 * Based on the 64360 driver from:
6 * Copyright (C) 2002 rabeeh@galileo.co.il
7 *
8 * Copyright (C) 2003 PMC-Sierra, Inc.,
Olaf Hering3bb8a18a2006-01-05 22:45:45 -08009 * written by Manish Lachwani
Linus Torvalds1da177e2005-04-16 15:20:36 -070010 *
11 * Copyright (C) 2003 Ralf Baechle <ralf@linux-mips.org>
12 *
Dale Farnsworthc8aaea22006-03-03 10:02:05 -070013 * Copyright (C) 2004-2006 MontaVista Software, Inc.
Linus Torvalds1da177e2005-04-16 15:20:36 -070014 * Dale Farnsworth <dale@farnsworth.org>
15 *
16 * Copyright (C) 2004 Steven J. Hill <sjhill1@rockwellcollins.com>
17 * <sjhill@realitydiluted.com>
18 *
19 * This program is free software; you can redistribute it and/or
20 * modify it under the terms of the GNU General Public License
21 * as published by the Free Software Foundation; either version 2
22 * of the License, or (at your option) any later version.
23 *
24 * This program is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 * GNU General Public License for more details.
28 *
29 * You should have received a copy of the GNU General Public License
30 * along with this program; if not, write to the Free Software
31 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
32 */
33#include <linux/init.h>
34#include <linux/dma-mapping.h>
Al Virob6298c22006-01-18 19:35:54 -050035#include <linux/in.h>
36#include <linux/ip.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070037#include <linux/tcp.h>
38#include <linux/udp.h>
39#include <linux/etherdevice.h>
40
41#include <linux/bitops.h>
42#include <linux/delay.h>
43#include <linux/ethtool.h>
Russell Kingd052d1b2005-10-29 19:07:23 +010044#include <linux/platform_device.h>
45
Linus Torvalds1da177e2005-04-16 15:20:36 -070046#include <asm/io.h>
47#include <asm/types.h>
48#include <asm/pgtable.h>
49#include <asm/system.h>
50#include <asm/delay.h>
51#include "mv643xx_eth.h"
52
Linus Torvalds1da177e2005-04-16 15:20:36 -070053/* Static function declarations */
Linus Torvalds1da177e2005-04-16 15:20:36 -070054static void eth_port_uc_addr_get(struct net_device *dev,
55 unsigned char *MacAddr);
Dale Farnsworth16e03012006-01-16 16:50:02 -070056static void eth_port_set_multicast_list(struct net_device *);
Dale Farnsworth9f8dd312006-01-27 01:10:47 -070057static void mv643xx_eth_port_enable_tx(unsigned int port_num,
Dale Farnsworth12a87c62006-03-03 10:00:22 -070058 unsigned int queues);
Dale Farnsworth9f8dd312006-01-27 01:10:47 -070059static void mv643xx_eth_port_enable_rx(unsigned int port_num,
Dale Farnsworth12a87c62006-03-03 10:00:22 -070060 unsigned int queues);
Dale Farnsworth9f8dd312006-01-27 01:10:47 -070061static unsigned int mv643xx_eth_port_disable_tx(unsigned int port_num);
62static unsigned int mv643xx_eth_port_disable_rx(unsigned int port_num);
Dale Farnsworthab4384a2006-01-16 16:59:21 -070063static int mv643xx_eth_open(struct net_device *);
64static int mv643xx_eth_stop(struct net_device *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070065static int mv643xx_eth_change_mtu(struct net_device *, int);
66static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *);
67static void eth_port_init_mac_tables(unsigned int eth_port_num);
68#ifdef MV643XX_NAPI
69static int mv643xx_poll(struct net_device *dev, int *budget);
70#endif
James Chapmanc28a4f82006-01-27 01:13:15 -070071static int ethernet_phy_get(unsigned int eth_port_num);
Linus Torvalds1da177e2005-04-16 15:20:36 -070072static void ethernet_phy_set(unsigned int eth_port_num, int phy_addr);
73static int ethernet_phy_detect(unsigned int eth_port_num);
James Chapmanc28a4f82006-01-27 01:13:15 -070074static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location);
75static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val);
James Chapmand0412d92006-01-27 01:15:30 -070076static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
Jeff Garzik7282d492006-09-13 14:30:00 -040077static const struct ethtool_ops mv643xx_ethtool_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
79static char mv643xx_driver_name[] = "mv643xx_eth";
80static char mv643xx_driver_version[] = "1.0";
81
82static void __iomem *mv643xx_eth_shared_base;
83
84/* used to protect MV643XX_ETH_SMI_REG, which is shared across ports */
Ingo Molnara9f6a0d2005-09-09 13:10:41 -070085static DEFINE_SPINLOCK(mv643xx_eth_phy_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
87static inline u32 mv_read(int offset)
88{
Al Virodc074a82005-04-25 07:55:58 -070089 void __iomem *reg_base;
Linus Torvalds1da177e2005-04-16 15:20:36 -070090
91 reg_base = mv643xx_eth_shared_base - MV643XX_ETH_SHARED_REGS;
92
93 return readl(reg_base + offset);
94}
95
96static inline void mv_write(int offset, u32 data)
97{
Al Virodc074a82005-04-25 07:55:58 -070098 void __iomem *reg_base;
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
100 reg_base = mv643xx_eth_shared_base - MV643XX_ETH_SHARED_REGS;
101 writel(data, reg_base + offset);
102}
103
104/*
105 * Changes MTU (maximum transfer unit) of the gigabit ethenret port
106 *
107 * Input : pointer to ethernet interface network device structure
108 * new mtu size
109 * Output : 0 upon success, -EINVAL upon failure
110 */
111static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
112{
Dale Farnsworth8f518702006-01-16 16:56:30 -0700113 if ((new_mtu > 9500) || (new_mtu < 64))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115
116 dev->mtu = new_mtu;
117 /*
118 * Stop then re-open the interface. This will allocate RX skb's with
119 * the new MTU.
120 * There is a possible danger that the open will not successed, due
121 * to memory is full, which might fail the open function.
122 */
123 if (netif_running(dev)) {
Dale Farnsworthab4384a2006-01-16 16:59:21 -0700124 mv643xx_eth_stop(dev);
125 if (mv643xx_eth_open(dev))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 printk(KERN_ERR
127 "%s: Fatal error on opening device\n",
128 dev->name);
129 }
130
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 return 0;
132}
133
134/*
Dale Farnsworthf78fb472006-03-03 10:05:26 -0700135 * mv643xx_eth_rx_refill_descs
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 *
137 * Fills / refills RX queue on a certain gigabit ethernet port
138 *
139 * Input : pointer to ethernet interface network device structure
140 * Output : N/A
141 */
Dale Farnsworthf78fb472006-03-03 10:05:26 -0700142static void mv643xx_eth_rx_refill_descs(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144 struct mv643xx_private *mp = netdev_priv(dev);
145 struct pkt_info pkt_info;
146 struct sk_buff *skb;
Dale Farnsworthb44cd572006-01-16 16:51:22 -0700147 int unaligned;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148
Dale Farnsworthf78fb472006-03-03 10:05:26 -0700149 while (mp->rx_desc_count < mp->rx_ring_size) {
Ralf Baechle908b6372007-02-26 19:52:06 +0000150 skb = dev_alloc_skb(ETH_RX_SKB_SIZE + dma_get_cache_alignment());
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151 if (!skb)
152 break;
Dale Farnsworthf98e36f12006-01-27 01:09:18 -0700153 mp->rx_desc_count++;
Ralf Baechle908b6372007-02-26 19:52:06 +0000154 unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1);
Dale Farnsworthb44cd572006-01-16 16:51:22 -0700155 if (unaligned)
Ralf Baechle908b6372007-02-26 19:52:06 +0000156 skb_reserve(skb, dma_get_cache_alignment() - unaligned);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157 pkt_info.cmd_sts = ETH_RX_ENABLE_INTERRUPT;
Dale Farnsworth7303fde2006-03-03 10:03:36 -0700158 pkt_info.byte_cnt = ETH_RX_SKB_SIZE;
159 pkt_info.buf_ptr = dma_map_single(NULL, skb->data,
160 ETH_RX_SKB_SIZE, DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 pkt_info.return_info = skb;
162 if (eth_rx_return_buff(mp, &pkt_info) != ETH_OK) {
163 printk(KERN_ERR
164 "%s: Error allocating RX Ring\n", dev->name);
165 break;
166 }
Dale Farnsworth7303fde2006-03-03 10:03:36 -0700167 skb_reserve(skb, ETH_HW_IP_ALIGN);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 /*
170 * If RX ring is empty of SKB, set a timer to try allocating
Dale Farnsworthf78fb472006-03-03 10:05:26 -0700171 * again at a later time.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 */
Dale Farnsworthf78fb472006-03-03 10:05:26 -0700173 if (mp->rx_desc_count == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 printk(KERN_INFO "%s: Rx ring is empty\n", dev->name);
Dale Farnsworthf78fb472006-03-03 10:05:26 -0700175 mp->timeout.expires = jiffies + (HZ / 10); /* 100 mSec */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176 add_timer(&mp->timeout);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178}
179
180/*
Dale Farnsworthf78fb472006-03-03 10:05:26 -0700181 * mv643xx_eth_rx_refill_descs_timer_wrapper
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 *
183 * Timer routine to wake up RX queue filling task. This function is
184 * used only in case the RX queue is empty, and all alloc_skb has
185 * failed (due to out of memory event).
186 *
187 * Input : pointer to ethernet interface network device structure
188 * Output : N/A
189 */
Dale Farnsworthf78fb472006-03-03 10:05:26 -0700190static inline void mv643xx_eth_rx_refill_descs_timer_wrapper(unsigned long data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191{
Dale Farnsworthf78fb472006-03-03 10:05:26 -0700192 mv643xx_eth_rx_refill_descs((struct net_device *)data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193}
194
195/*
196 * mv643xx_eth_update_mac_address
197 *
198 * Update the MAC address of the port in the address table
199 *
200 * Input : pointer to ethernet interface network device structure
201 * Output : N/A
202 */
203static void mv643xx_eth_update_mac_address(struct net_device *dev)
204{
205 struct mv643xx_private *mp = netdev_priv(dev);
206 unsigned int port_num = mp->port_num;
207
208 eth_port_init_mac_tables(port_num);
Dale Farnsworthed9b5d42006-01-27 01:06:38 -0700209 eth_port_uc_addr_set(port_num, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210}
211
212/*
213 * mv643xx_eth_set_rx_mode
214 *
215 * Change from promiscuos to regular rx mode
216 *
217 * Input : pointer to ethernet interface network device structure
218 * Output : N/A
219 */
220static void mv643xx_eth_set_rx_mode(struct net_device *dev)
221{
222 struct mv643xx_private *mp = netdev_priv(dev);
Dale Farnsworth01999872006-01-27 01:18:01 -0700223 u32 config_reg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224
Dale Farnsworth01999872006-01-27 01:18:01 -0700225 config_reg = mv_read(MV643XX_ETH_PORT_CONFIG_REG(mp->port_num));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 if (dev->flags & IFF_PROMISC)
Dale Farnsworth01999872006-01-27 01:18:01 -0700227 config_reg |= (u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 else
Dale Farnsworth01999872006-01-27 01:18:01 -0700229 config_reg &= ~(u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
230 mv_write(MV643XX_ETH_PORT_CONFIG_REG(mp->port_num), config_reg);
Dale Farnsworth16e03012006-01-16 16:50:02 -0700231
232 eth_port_set_multicast_list(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233}
234
235/*
236 * mv643xx_eth_set_mac_address
237 *
238 * Change the interface's mac address.
239 * No special hardware thing should be done because interface is always
240 * put in promiscuous mode.
241 *
242 * Input : pointer to ethernet interface network device structure and
243 * a pointer to the designated entry to be added to the cache.
244 * Output : zero upon success, negative upon failure
245 */
246static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
247{
248 int i;
249
250 for (i = 0; i < 6; i++)
251 /* +2 is for the offset of the HW addr type */
252 dev->dev_addr[i] = ((unsigned char *)addr)[i + 2];
253 mv643xx_eth_update_mac_address(dev);
254 return 0;
255}
256
257/*
258 * mv643xx_eth_tx_timeout
259 *
260 * Called upon a timeout on transmitting a packet
261 *
262 * Input : pointer to ethernet interface network device structure.
263 * Output : N/A
264 */
265static void mv643xx_eth_tx_timeout(struct net_device *dev)
266{
267 struct mv643xx_private *mp = netdev_priv(dev);
268
269 printk(KERN_INFO "%s: TX timeout ", dev->name);
270
271 /* Do the reset outside of interrupt context */
272 schedule_work(&mp->tx_timeout_task);
273}
274
275/*
276 * mv643xx_eth_tx_timeout_task
277 *
278 * Actual routine to reset the adapter when a timeout on Tx has occurred
279 */
Al Viro91c7c562006-12-06 19:50:06 +0000280static void mv643xx_eth_tx_timeout_task(struct work_struct *ugly)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281{
Al Viro91c7c562006-12-06 19:50:06 +0000282 struct mv643xx_private *mp = container_of(ugly, struct mv643xx_private,
283 tx_timeout_task);
284 struct net_device *dev = mp->mii.dev; /* yuck */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285
Dale Farnsworth94843562006-04-11 18:24:26 -0700286 if (!netif_running(dev))
287 return;
288
289 netif_stop_queue(dev);
290
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 eth_port_reset(mp->port_num);
Dale Farnsworthed9b5d42006-01-27 01:06:38 -0700292 eth_port_start(dev);
Dale Farnsworth94843562006-04-11 18:24:26 -0700293
294 if (mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB)
295 netif_wake_queue(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296}
297
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700298/**
299 * mv643xx_eth_free_tx_descs - Free the tx desc data for completed descriptors
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 *
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700301 * If force is non-zero, frees uncompleted descriptors as well
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302 */
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700303int mv643xx_eth_free_tx_descs(struct net_device *dev, int force)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304{
305 struct mv643xx_private *mp = netdev_priv(dev);
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700306 struct eth_tx_desc *desc;
307 u32 cmd_sts;
308 struct sk_buff *skb;
309 unsigned long flags;
310 int tx_index;
311 dma_addr_t addr;
312 int count;
313 int released = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700315 while (mp->tx_desc_count > 0) {
316 spin_lock_irqsave(&mp->lock, flags);
Dale Farnsworthd344bff2007-01-23 09:52:25 -0700317
318 /* tx_desc_count might have changed before acquiring the lock */
319 if (mp->tx_desc_count <= 0) {
320 spin_unlock_irqrestore(&mp->lock, flags);
321 return released;
322 }
323
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700324 tx_index = mp->tx_used_desc_q;
325 desc = &mp->p_tx_desc_area[tx_index];
326 cmd_sts = desc->cmd_sts;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700328 if (!force && (cmd_sts & ETH_BUFFER_OWNED_BY_DMA)) {
329 spin_unlock_irqrestore(&mp->lock, flags);
330 return released;
331 }
332
333 mp->tx_used_desc_q = (tx_index + 1) % mp->tx_ring_size;
334 mp->tx_desc_count--;
335
336 addr = desc->buf_ptr;
337 count = desc->byte_cnt;
338 skb = mp->tx_skb[tx_index];
339 if (skb)
340 mp->tx_skb[tx_index] = NULL;
341
Dale Farnsworth7303fde2006-03-03 10:03:36 -0700342 if (cmd_sts & ETH_ERROR_SUMMARY) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 printk("%s: Error in TX\n", dev->name);
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700344 mp->stats.tx_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 }
346
Dale Farnsworthd344bff2007-01-23 09:52:25 -0700347 spin_unlock_irqrestore(&mp->lock, flags);
348
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700349 if (cmd_sts & ETH_TX_FIRST_DESC)
350 dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE);
Paolo Galtiericb415d32006-01-16 16:48:02 -0700351 else
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700352 dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700354 if (skb)
355 dev_kfree_skb_irq(skb);
356
357 released = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 }
359
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 return released;
361}
362
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700363static void mv643xx_eth_free_completed_tx_descs(struct net_device *dev)
364{
365 struct mv643xx_private *mp = netdev_priv(dev);
366
367 if (mv643xx_eth_free_tx_descs(dev, 0) &&
368 mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB)
369 netif_wake_queue(dev);
370}
371
372static void mv643xx_eth_free_all_tx_descs(struct net_device *dev)
373{
374 mv643xx_eth_free_tx_descs(dev, 1);
375}
376
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377/*
378 * mv643xx_eth_receive
379 *
380 * This function is forward packets that are received from the port's
381 * queues toward kernel core or FastRoute them to another interface.
382 *
383 * Input : dev - a pointer to the required interface
384 * max - maximum number to receive (0 means unlimted)
385 *
386 * Output : number of served packets
387 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388static int mv643xx_eth_receive_queue(struct net_device *dev, int budget)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389{
390 struct mv643xx_private *mp = netdev_priv(dev);
391 struct net_device_stats *stats = &mp->stats;
392 unsigned int received_packets = 0;
393 struct sk_buff *skb;
394 struct pkt_info pkt_info;
395
Dale Farnsworthb1dd9ca2005-09-01 09:59:23 -0700396 while (budget-- > 0 && eth_port_receive(mp, &pkt_info) == ETH_OK) {
Jeff Garzik54caf442006-09-21 00:08:10 -0400397 dma_unmap_single(NULL, pkt_info.buf_ptr, ETH_RX_SKB_SIZE,
Dale Farnsworth71d28722006-09-13 09:21:08 -0700398 DMA_FROM_DEVICE);
Dale Farnsworthf98e36f12006-01-27 01:09:18 -0700399 mp->rx_desc_count--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 received_packets++;
Dale Farnsworthb1dd9ca2005-09-01 09:59:23 -0700401
Dale Farnsworth468d09f2006-03-03 10:04:39 -0700402 /*
403 * Update statistics.
404 * Note byte count includes 4 byte CRC count
405 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 stats->rx_packets++;
407 stats->rx_bytes += pkt_info.byte_cnt;
408 skb = pkt_info.return_info;
409 /*
410 * In case received a packet without first / last bits on OR
411 * the error summary bit is on, the packets needs to be dropeed.
412 */
413 if (((pkt_info.cmd_sts
414 & (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) !=
415 (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC))
416 || (pkt_info.cmd_sts & ETH_ERROR_SUMMARY)) {
417 stats->rx_dropped++;
418 if ((pkt_info.cmd_sts & (ETH_RX_FIRST_DESC |
419 ETH_RX_LAST_DESC)) !=
420 (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) {
421 if (net_ratelimit())
422 printk(KERN_ERR
423 "%s: Received packet spread "
424 "on multiple descriptors\n",
425 dev->name);
426 }
427 if (pkt_info.cmd_sts & ETH_ERROR_SUMMARY)
428 stats->rx_errors++;
429
430 dev_kfree_skb_irq(skb);
431 } else {
432 /*
433 * The -4 is for the CRC in the trailer of the
434 * received packet
435 */
436 skb_put(skb, pkt_info.byte_cnt - 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437
438 if (pkt_info.cmd_sts & ETH_LAYER_4_CHECKSUM_OK) {
439 skb->ip_summed = CHECKSUM_UNNECESSARY;
440 skb->csum = htons(
441 (pkt_info.cmd_sts & 0x0007fff8) >> 3);
442 }
443 skb->protocol = eth_type_trans(skb, dev);
444#ifdef MV643XX_NAPI
445 netif_receive_skb(skb);
446#else
447 netif_rx(skb);
448#endif
449 }
Paolo Galtieri12ad74f2006-01-27 01:03:38 -0700450 dev->last_rx = jiffies;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451 }
Dale Farnsworthf78fb472006-03-03 10:05:26 -0700452 mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453
454 return received_packets;
455}
456
James Chapmand0412d92006-01-27 01:15:30 -0700457/* Set the mv643xx port configuration register for the speed/duplex mode. */
458static void mv643xx_eth_update_pscr(struct net_device *dev,
459 struct ethtool_cmd *ecmd)
460{
461 struct mv643xx_private *mp = netdev_priv(dev);
462 int port_num = mp->port_num;
463 u32 o_pscr, n_pscr;
Dale Farnsworth12a87c62006-03-03 10:00:22 -0700464 unsigned int queues;
James Chapmand0412d92006-01-27 01:15:30 -0700465
466 o_pscr = mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num));
467 n_pscr = o_pscr;
468
469 /* clear speed, duplex and rx buffer size fields */
470 n_pscr &= ~(MV643XX_ETH_SET_MII_SPEED_TO_100 |
471 MV643XX_ETH_SET_GMII_SPEED_TO_1000 |
472 MV643XX_ETH_SET_FULL_DUPLEX_MODE |
473 MV643XX_ETH_MAX_RX_PACKET_MASK);
474
475 if (ecmd->duplex == DUPLEX_FULL)
476 n_pscr |= MV643XX_ETH_SET_FULL_DUPLEX_MODE;
477
478 if (ecmd->speed == SPEED_1000)
479 n_pscr |= MV643XX_ETH_SET_GMII_SPEED_TO_1000 |
480 MV643XX_ETH_MAX_RX_PACKET_9700BYTE;
481 else {
482 if (ecmd->speed == SPEED_100)
483 n_pscr |= MV643XX_ETH_SET_MII_SPEED_TO_100;
484 n_pscr |= MV643XX_ETH_MAX_RX_PACKET_1522BYTE;
485 }
486
487 if (n_pscr != o_pscr) {
488 if ((o_pscr & MV643XX_ETH_SERIAL_PORT_ENABLE) == 0)
489 mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
490 n_pscr);
491 else {
Dale Farnsworth12a87c62006-03-03 10:00:22 -0700492 queues = mv643xx_eth_port_disable_tx(port_num);
James Chapmand0412d92006-01-27 01:15:30 -0700493
494 o_pscr &= ~MV643XX_ETH_SERIAL_PORT_ENABLE;
495 mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
496 o_pscr);
497 mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
498 n_pscr);
499 mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num),
500 n_pscr);
Dale Farnsworth12a87c62006-03-03 10:00:22 -0700501 if (queues)
502 mv643xx_eth_port_enable_tx(port_num, queues);
James Chapmand0412d92006-01-27 01:15:30 -0700503 }
504 }
505}
506
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507/*
508 * mv643xx_eth_int_handler
509 *
510 * Main interrupt handler for the gigbit ethernet ports
511 *
512 * Input : irq - irq number (not used)
513 * dev_id - a pointer to the required interface's data structure
514 * regs - not used
515 * Output : N/A
516 */
517
David Howells7d12e782006-10-05 14:55:46 +0100518static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519{
520 struct net_device *dev = (struct net_device *)dev_id;
521 struct mv643xx_private *mp = netdev_priv(dev);
522 u32 eth_int_cause, eth_int_cause_ext = 0;
523 unsigned int port_num = mp->port_num;
524
525 /* Read interrupt cause registers */
526 eth_int_cause = mv_read(MV643XX_ETH_INTERRUPT_CAUSE_REG(port_num)) &
Dale Farnsworth7303fde2006-03-03 10:03:36 -0700527 ETH_INT_UNMASK_ALL;
Dale Farnsworth468d09f2006-03-03 10:04:39 -0700528 if (eth_int_cause & ETH_INT_CAUSE_EXT) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 eth_int_cause_ext = mv_read(
530 MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num)) &
Dale Farnsworth7303fde2006-03-03 10:03:36 -0700531 ETH_INT_UNMASK_ALL_EXT;
Dale Farnsworth468d09f2006-03-03 10:04:39 -0700532 mv_write(MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num),
533 ~eth_int_cause_ext);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 }
Dale Farnsworth7303fde2006-03-03 10:03:36 -0700535
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 /* PHY status changed */
Dale Farnsworth468d09f2006-03-03 10:04:39 -0700537 if (eth_int_cause_ext & ETH_INT_CAUSE_PHY) {
James Chapmand0412d92006-01-27 01:15:30 -0700538 struct ethtool_cmd cmd;
539
James Chapmanc28a4f82006-01-27 01:13:15 -0700540 if (mii_link_ok(&mp->mii)) {
James Chapmand0412d92006-01-27 01:15:30 -0700541 mii_ethtool_gset(&mp->mii, &cmd);
542 mv643xx_eth_update_pscr(dev, &cmd);
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700543 mv643xx_eth_port_enable_tx(port_num,
544 ETH_TX_QUEUES_ENABLED);
James Chapmanc28a4f82006-01-27 01:13:15 -0700545 if (!netif_carrier_ok(dev)) {
546 netif_carrier_on(dev);
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700547 if (mp->tx_ring_size - mp->tx_desc_count >=
548 MAX_DESCS_PER_SKB)
James Chapmand0412d92006-01-27 01:15:30 -0700549 netif_wake_queue(dev);
James Chapmanc28a4f82006-01-27 01:13:15 -0700550 }
551 } else if (netif_carrier_ok(dev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552 netif_stop_queue(dev);
James Chapmanc28a4f82006-01-27 01:13:15 -0700553 netif_carrier_off(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 }
555 }
556
Dale Farnsworth468d09f2006-03-03 10:04:39 -0700557#ifdef MV643XX_NAPI
558 if (eth_int_cause & ETH_INT_CAUSE_RX) {
559 /* schedule the NAPI poll routine to maintain port */
560 mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num),
561 ETH_INT_MASK_ALL);
562 /* wait for previous write to complete */
563 mv_read(MV643XX_ETH_INTERRUPT_MASK_REG(port_num));
564
565 netif_rx_schedule(dev);
566 }
567#else
568 if (eth_int_cause & ETH_INT_CAUSE_RX)
569 mv643xx_eth_receive_queue(dev, INT_MAX);
Brent Cook5c537402006-04-11 18:23:15 -0700570#endif
Dale Farnsworth468d09f2006-03-03 10:04:39 -0700571 if (eth_int_cause_ext & ETH_INT_CAUSE_TX)
572 mv643xx_eth_free_completed_tx_descs(dev);
Dale Farnsworth468d09f2006-03-03 10:04:39 -0700573
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 /*
575 * If no real interrupt occured, exit.
576 * This can happen when using gigE interrupt coalescing mechanism.
577 */
578 if ((eth_int_cause == 0x0) && (eth_int_cause_ext == 0x0))
579 return IRQ_NONE;
580
581 return IRQ_HANDLED;
582}
583
584#ifdef MV643XX_COAL
585
586/*
587 * eth_port_set_rx_coal - Sets coalescing interrupt mechanism on RX path
588 *
589 * DESCRIPTION:
590 * This routine sets the RX coalescing interrupt mechanism parameter.
591 * This parameter is a timeout counter, that counts in 64 t_clk
592 * chunks ; that when timeout event occurs a maskable interrupt
593 * occurs.
594 * The parameter is calculated using the tClk of the MV-643xx chip
595 * , and the required delay of the interrupt in usec.
596 *
597 * INPUT:
598 * unsigned int eth_port_num Ethernet port number
599 * unsigned int t_clk t_clk of the MV-643xx chip in HZ units
600 * unsigned int delay Delay in usec
601 *
602 * OUTPUT:
603 * Interrupt coalescing mechanism value is set in MV-643xx chip.
604 *
605 * RETURN:
606 * The interrupt coalescing value set in the gigE port.
607 *
608 */
609static unsigned int eth_port_set_rx_coal(unsigned int eth_port_num,
610 unsigned int t_clk, unsigned int delay)
611{
612 unsigned int coal = ((t_clk / 1000000) * delay) / 64;
613
614 /* Set RX Coalescing mechanism */
615 mv_write(MV643XX_ETH_SDMA_CONFIG_REG(eth_port_num),
616 ((coal & 0x3fff) << 8) |
617 (mv_read(MV643XX_ETH_SDMA_CONFIG_REG(eth_port_num))
618 & 0xffc000ff));
619
620 return coal;
621}
622#endif
623
624/*
625 * eth_port_set_tx_coal - Sets coalescing interrupt mechanism on TX path
626 *
627 * DESCRIPTION:
628 * This routine sets the TX coalescing interrupt mechanism parameter.
629 * This parameter is a timeout counter, that counts in 64 t_clk
630 * chunks ; that when timeout event occurs a maskable interrupt
631 * occurs.
632 * The parameter is calculated using the t_cLK frequency of the
633 * MV-643xx chip and the required delay in the interrupt in uSec
634 *
635 * INPUT:
636 * unsigned int eth_port_num Ethernet port number
637 * unsigned int t_clk t_clk of the MV-643xx chip in HZ units
638 * unsigned int delay Delay in uSeconds
639 *
640 * OUTPUT:
641 * Interrupt coalescing mechanism value is set in MV-643xx chip.
642 *
643 * RETURN:
644 * The interrupt coalescing value set in the gigE port.
645 *
646 */
647static unsigned int eth_port_set_tx_coal(unsigned int eth_port_num,
648 unsigned int t_clk, unsigned int delay)
649{
650 unsigned int coal;
651 coal = ((t_clk / 1000000) * delay) / 64;
652 /* Set TX Coalescing mechanism */
653 mv_write(MV643XX_ETH_TX_FIFO_URGENT_THRESHOLD_REG(eth_port_num),
654 coal << 4);
655 return coal;
656}
657
658/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 * ether_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory.
660 *
661 * DESCRIPTION:
662 * This function prepares a Rx chained list of descriptors and packet
663 * buffers in a form of a ring. The routine must be called after port
664 * initialization routine and before port start routine.
665 * The Ethernet SDMA engine uses CPU bus addresses to access the various
666 * devices in the system (i.e. DRAM). This function uses the ethernet
667 * struct 'virtual to physical' routine (set by the user) to set the ring
668 * with physical addresses.
669 *
670 * INPUT:
671 * struct mv643xx_private *mp Ethernet Port Control srtuct.
672 *
673 * OUTPUT:
674 * The routine updates the Ethernet port control struct with information
675 * regarding the Rx descriptors and buffers.
676 *
677 * RETURN:
678 * None.
679 */
680static void ether_init_rx_desc_ring(struct mv643xx_private *mp)
681{
682 volatile struct eth_rx_desc *p_rx_desc;
683 int rx_desc_num = mp->rx_ring_size;
684 int i;
685
686 /* initialize the next_desc_ptr links in the Rx descriptors ring */
687 p_rx_desc = (struct eth_rx_desc *)mp->p_rx_desc_area;
688 for (i = 0; i < rx_desc_num; i++) {
689 p_rx_desc[i].next_desc_ptr = mp->rx_desc_dma +
690 ((i + 1) % rx_desc_num) * sizeof(struct eth_rx_desc);
691 }
692
693 /* Save Rx desc pointer to driver struct. */
694 mp->rx_curr_desc_q = 0;
695 mp->rx_used_desc_q = 0;
696
697 mp->rx_desc_area_size = rx_desc_num * sizeof(struct eth_rx_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698}
699
700/*
701 * ether_init_tx_desc_ring - Curve a Tx chain desc list and buffer in memory.
702 *
703 * DESCRIPTION:
704 * This function prepares a Tx chained list of descriptors and packet
705 * buffers in a form of a ring. The routine must be called after port
706 * initialization routine and before port start routine.
707 * The Ethernet SDMA engine uses CPU bus addresses to access the various
708 * devices in the system (i.e. DRAM). This function uses the ethernet
709 * struct 'virtual to physical' routine (set by the user) to set the ring
710 * with physical addresses.
711 *
712 * INPUT:
713 * struct mv643xx_private *mp Ethernet Port Control srtuct.
714 *
715 * OUTPUT:
716 * The routine updates the Ethernet port control struct with information
717 * regarding the Tx descriptors and buffers.
718 *
719 * RETURN:
720 * None.
721 */
722static void ether_init_tx_desc_ring(struct mv643xx_private *mp)
723{
724 int tx_desc_num = mp->tx_ring_size;
725 struct eth_tx_desc *p_tx_desc;
726 int i;
727
728 /* Initialize the next_desc_ptr links in the Tx descriptors ring */
729 p_tx_desc = (struct eth_tx_desc *)mp->p_tx_desc_area;
730 for (i = 0; i < tx_desc_num; i++) {
731 p_tx_desc[i].next_desc_ptr = mp->tx_desc_dma +
732 ((i + 1) % tx_desc_num) * sizeof(struct eth_tx_desc);
733 }
734
735 mp->tx_curr_desc_q = 0;
736 mp->tx_used_desc_q = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737
738 mp->tx_desc_area_size = tx_desc_num * sizeof(struct eth_tx_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739}
740
James Chapmand0412d92006-01-27 01:15:30 -0700741static int mv643xx_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
742{
743 struct mv643xx_private *mp = netdev_priv(dev);
744 int err;
745
746 spin_lock_irq(&mp->lock);
747 err = mii_ethtool_sset(&mp->mii, cmd);
748 spin_unlock_irq(&mp->lock);
749
750 return err;
751}
752
753static int mv643xx_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
754{
755 struct mv643xx_private *mp = netdev_priv(dev);
756 int err;
757
758 spin_lock_irq(&mp->lock);
759 err = mii_ethtool_gset(&mp->mii, cmd);
760 spin_unlock_irq(&mp->lock);
761
762 /* The PHY may support 1000baseT_Half, but the mv643xx does not */
763 cmd->supported &= ~SUPPORTED_1000baseT_Half;
764 cmd->advertising &= ~ADVERTISED_1000baseT_Half;
765
766 return err;
767}
768
Dale Farnsworthab4384a2006-01-16 16:59:21 -0700769/*
770 * mv643xx_eth_open
771 *
772 * This function is called when openning the network device. The function
773 * should initialize all the hardware, initialize cyclic Rx/Tx
774 * descriptors chain and buffers and allocate an IRQ to the network
775 * device.
776 *
777 * Input : a pointer to the network device structure
778 *
779 * Output : zero of success , nonzero if fails.
780 */
781
782static int mv643xx_eth_open(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783{
784 struct mv643xx_private *mp = netdev_priv(dev);
785 unsigned int port_num = mp->port_num;
786 unsigned int size;
Dale Farnsworthab4384a2006-01-16 16:59:21 -0700787 int err;
788
Dale Farnsworth85cf5722007-03-07 22:21:23 -0700789 /* Clear any pending ethernet port interrupts */
790 mv_write(MV643XX_ETH_INTERRUPT_CAUSE_REG(port_num), 0);
791 mv_write(MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num), 0);
792 /* wait for previous write to complete */
793 mv_read (MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num));
794
Dale Farnsworthab4384a2006-01-16 16:59:21 -0700795 err = request_irq(dev->irq, mv643xx_eth_int_handler,
Thomas Gleixner1fb9df52006-07-01 19:29:39 -0700796 IRQF_SHARED | IRQF_SAMPLE_RANDOM, dev->name, dev);
Dale Farnsworthab4384a2006-01-16 16:59:21 -0700797 if (err) {
798 printk(KERN_ERR "Can not assign IRQ number to MV643XX_eth%d\n",
799 port_num);
800 return -EAGAIN;
801 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803 eth_port_init(mp);
804
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805 memset(&mp->timeout, 0, sizeof(struct timer_list));
Dale Farnsworthf78fb472006-03-03 10:05:26 -0700806 mp->timeout.function = mv643xx_eth_rx_refill_descs_timer_wrapper;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807 mp->timeout.data = (unsigned long)dev;
808
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809 /* Allocate RX and TX skb rings */
810 mp->rx_skb = kmalloc(sizeof(*mp->rx_skb) * mp->rx_ring_size,
811 GFP_KERNEL);
812 if (!mp->rx_skb) {
813 printk(KERN_ERR "%s: Cannot allocate Rx skb ring\n", dev->name);
Dale Farnsworthab4384a2006-01-16 16:59:21 -0700814 err = -ENOMEM;
815 goto out_free_irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816 }
817 mp->tx_skb = kmalloc(sizeof(*mp->tx_skb) * mp->tx_ring_size,
818 GFP_KERNEL);
819 if (!mp->tx_skb) {
820 printk(KERN_ERR "%s: Cannot allocate Tx skb ring\n", dev->name);
Dale Farnsworthab4384a2006-01-16 16:59:21 -0700821 err = -ENOMEM;
822 goto out_free_rx_skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823 }
824
825 /* Allocate TX ring */
Dale Farnsworthf98e36f12006-01-27 01:09:18 -0700826 mp->tx_desc_count = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827 size = mp->tx_ring_size * sizeof(struct eth_tx_desc);
828 mp->tx_desc_area_size = size;
829
830 if (mp->tx_sram_size) {
831 mp->p_tx_desc_area = ioremap(mp->tx_sram_addr,
832 mp->tx_sram_size);
833 mp->tx_desc_dma = mp->tx_sram_addr;
834 } else
835 mp->p_tx_desc_area = dma_alloc_coherent(NULL, size,
836 &mp->tx_desc_dma,
837 GFP_KERNEL);
838
839 if (!mp->p_tx_desc_area) {
840 printk(KERN_ERR "%s: Cannot allocate Tx Ring (size %d bytes)\n",
841 dev->name, size);
Dale Farnsworthab4384a2006-01-16 16:59:21 -0700842 err = -ENOMEM;
843 goto out_free_tx_skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844 }
845 BUG_ON((u32) mp->p_tx_desc_area & 0xf); /* check 16-byte alignment */
846 memset((void *)mp->p_tx_desc_area, 0, mp->tx_desc_area_size);
847
848 ether_init_tx_desc_ring(mp);
849
850 /* Allocate RX ring */
Dale Farnsworthf98e36f12006-01-27 01:09:18 -0700851 mp->rx_desc_count = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852 size = mp->rx_ring_size * sizeof(struct eth_rx_desc);
853 mp->rx_desc_area_size = size;
854
855 if (mp->rx_sram_size) {
856 mp->p_rx_desc_area = ioremap(mp->rx_sram_addr,
857 mp->rx_sram_size);
858 mp->rx_desc_dma = mp->rx_sram_addr;
859 } else
860 mp->p_rx_desc_area = dma_alloc_coherent(NULL, size,
861 &mp->rx_desc_dma,
862 GFP_KERNEL);
863
864 if (!mp->p_rx_desc_area) {
865 printk(KERN_ERR "%s: Cannot allocate Rx ring (size %d bytes)\n",
866 dev->name, size);
867 printk(KERN_ERR "%s: Freeing previously allocated TX queues...",
868 dev->name);
869 if (mp->rx_sram_size)
Dale Farnsworthdd09b1d2006-01-16 16:53:15 -0700870 iounmap(mp->p_tx_desc_area);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871 else
872 dma_free_coherent(NULL, mp->tx_desc_area_size,
873 mp->p_tx_desc_area, mp->tx_desc_dma);
Dale Farnsworthab4384a2006-01-16 16:59:21 -0700874 err = -ENOMEM;
875 goto out_free_tx_skb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876 }
877 memset((void *)mp->p_rx_desc_area, 0, size);
878
879 ether_init_rx_desc_ring(mp);
880
Dale Farnsworthf78fb472006-03-03 10:05:26 -0700881 mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882
Dale Farnsworthed9b5d42006-01-27 01:06:38 -0700883 eth_port_start(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884
885 /* Interrupt Coalescing */
886
887#ifdef MV643XX_COAL
888 mp->rx_int_coal =
889 eth_port_set_rx_coal(port_num, 133000000, MV643XX_RX_COAL);
890#endif
891
892 mp->tx_int_coal =
893 eth_port_set_tx_coal(port_num, 133000000, MV643XX_TX_COAL);
894
Dale Farnsworth8f518702006-01-16 16:56:30 -0700895 /* Unmask phy and link status changes interrupts */
896 mv_write(MV643XX_ETH_INTERRUPT_EXTEND_MASK_REG(port_num),
Dale Farnsworth7303fde2006-03-03 10:03:36 -0700897 ETH_INT_UNMASK_ALL_EXT);
Dale Farnsworth8f518702006-01-16 16:56:30 -0700898
899 /* Unmask RX buffer and TX end interrupt */
Dale Farnsworth7303fde2006-03-03 10:03:36 -0700900 mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
James Chapmand0412d92006-01-27 01:15:30 -0700901
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902 return 0;
Dale Farnsworthab4384a2006-01-16 16:59:21 -0700903
904out_free_tx_skb:
905 kfree(mp->tx_skb);
906out_free_rx_skb:
907 kfree(mp->rx_skb);
908out_free_irq:
909 free_irq(dev->irq, dev);
910
911 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912}
913
914static void mv643xx_eth_free_tx_rings(struct net_device *dev)
915{
916 struct mv643xx_private *mp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917
918 /* Stop Tx Queues */
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700919 mv643xx_eth_port_disable_tx(mp->port_num);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920
Dale Farnsworthff561ee2006-03-03 10:02:51 -0700921 /* Free outstanding skb's on TX ring */
922 mv643xx_eth_free_all_tx_descs(dev);
923
924 BUG_ON(mp->tx_used_desc_q != mp->tx_curr_desc_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925
926 /* Free TX ring */
927 if (mp->tx_sram_size)
928 iounmap(mp->p_tx_desc_area);
929 else
930 dma_free_coherent(NULL, mp->tx_desc_area_size,
931 mp->p_tx_desc_area, mp->tx_desc_dma);
932}
933
934static void mv643xx_eth_free_rx_rings(struct net_device *dev)
935{
936 struct mv643xx_private *mp = netdev_priv(dev);
937 unsigned int port_num = mp->port_num;
938 int curr;
939
940 /* Stop RX Queues */
Dale Farnsworth9f8dd312006-01-27 01:10:47 -0700941 mv643xx_eth_port_disable_rx(port_num);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700942
943 /* Free preallocated skb's on RX rings */
Dale Farnsworthf98e36f12006-01-27 01:09:18 -0700944 for (curr = 0; mp->rx_desc_count && curr < mp->rx_ring_size; curr++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700945 if (mp->rx_skb[curr]) {
946 dev_kfree_skb(mp->rx_skb[curr]);
Dale Farnsworthf98e36f12006-01-27 01:09:18 -0700947 mp->rx_desc_count--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700948 }
949 }
950
Dale Farnsworthf98e36f12006-01-27 01:09:18 -0700951 if (mp->rx_desc_count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952 printk(KERN_ERR
953 "%s: Error in freeing Rx Ring. %d skb's still"
954 " stuck in RX Ring - ignoring them\n", dev->name,
Dale Farnsworthf98e36f12006-01-27 01:09:18 -0700955 mp->rx_desc_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956 /* Free RX ring */
957 if (mp->rx_sram_size)
958 iounmap(mp->p_rx_desc_area);
959 else
960 dma_free_coherent(NULL, mp->rx_desc_area_size,
961 mp->p_rx_desc_area, mp->rx_desc_dma);
962}
963
964/*
965 * mv643xx_eth_stop
966 *
967 * This function is used when closing the network device.
968 * It updates the hardware,
969 * release all memory that holds buffers and descriptors and release the IRQ.
970 * Input : a pointer to the device structure
971 * Output : zero if success , nonzero if fails
972 */
973
Dale Farnsworthab4384a2006-01-16 16:59:21 -0700974static int mv643xx_eth_stop(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975{
976 struct mv643xx_private *mp = netdev_priv(dev);
977 unsigned int port_num = mp->port_num;
978
Dale Farnsworthc2e5b352006-01-16 17:00:24 -0700979 /* Mask all interrupts on ethernet port */
Dale Farnsworth7303fde2006-03-03 10:03:36 -0700980 mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
Dale Farnsworthc2e5b352006-01-16 17:00:24 -0700981 /* wait for previous write to complete */
Dale Farnsworth8f518702006-01-16 16:56:30 -0700982 mv_read(MV643XX_ETH_INTERRUPT_MASK_REG(port_num));
983
984#ifdef MV643XX_NAPI
985 netif_poll_disable(dev);
986#endif
987 netif_carrier_off(dev);
988 netif_stop_queue(dev);
989
990 eth_port_reset(mp->port_num);
991
992 mv643xx_eth_free_tx_rings(dev);
993 mv643xx_eth_free_rx_rings(dev);
994
995#ifdef MV643XX_NAPI
996 netif_poll_enable(dev);
997#endif
998
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999 free_irq(dev->irq, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000
1001 return 0;
1002}
1003
1004#ifdef MV643XX_NAPI
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005/*
1006 * mv643xx_poll
1007 *
1008 * This function is used in case of NAPI
1009 */
1010static int mv643xx_poll(struct net_device *dev, int *budget)
1011{
1012 struct mv643xx_private *mp = netdev_priv(dev);
1013 int done = 1, orig_budget, work_done;
1014 unsigned int port_num = mp->port_num;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001015
1016#ifdef MV643XX_TX_FAST_REFILL
1017 if (++mp->tx_clean_threshold > 5) {
Dale Farnsworthff561ee2006-03-03 10:02:51 -07001018 mv643xx_eth_free_completed_tx_descs(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001019 mp->tx_clean_threshold = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001020 }
1021#endif
1022
1023 if ((mv_read(MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_0(port_num)))
1024 != (u32) mp->rx_used_desc_q) {
1025 orig_budget = *budget;
1026 if (orig_budget > dev->quota)
1027 orig_budget = dev->quota;
1028 work_done = mv643xx_eth_receive_queue(dev, orig_budget);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001029 *budget -= work_done;
1030 dev->quota -= work_done;
1031 if (work_done >= orig_budget)
1032 done = 0;
1033 }
1034
1035 if (done) {
Dale Farnsworth8f518702006-01-16 16:56:30 -07001036 netif_rx_complete(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001037 mv_write(MV643XX_ETH_INTERRUPT_CAUSE_REG(port_num), 0);
1038 mv_write(MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num), 0);
1039 mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num),
Dale Farnsworth7303fde2006-03-03 10:03:36 -07001040 ETH_INT_UNMASK_ALL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041 }
1042
1043 return done ? 0 : 1;
1044}
1045#endif
1046
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001047/**
1048 * has_tiny_unaligned_frags - check if skb has any small, unaligned fragments
1049 *
1050 * Hardware can't handle unaligned fragments smaller than 9 bytes.
Paul Janzenf7ea3332006-01-16 16:52:13 -07001051 * This helper function detects that case.
1052 */
1053
1054static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
1055{
Dale Farnsworthb4de9052006-01-27 01:04:43 -07001056 unsigned int frag;
1057 skb_frag_t *fragp;
Paul Janzenf7ea3332006-01-16 16:52:13 -07001058
Dale Farnsworthb4de9052006-01-27 01:04:43 -07001059 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
1060 fragp = &skb_shinfo(skb)->frags[frag];
1061 if (fragp->size <= 8 && fragp->page_offset & 0x7)
1062 return 1;
1063 }
1064 return 0;
Paul Janzenf7ea3332006-01-16 16:52:13 -07001065}
1066
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001067/**
1068 * eth_alloc_tx_desc_index - return the index of the next available tx desc
1069 */
1070static int eth_alloc_tx_desc_index(struct mv643xx_private *mp)
1071{
1072 int tx_desc_curr;
Paul Janzenf7ea3332006-01-16 16:52:13 -07001073
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001074 BUG_ON(mp->tx_desc_count >= mp->tx_ring_size);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001075
Dale Farnsworthff561ee2006-03-03 10:02:51 -07001076 tx_desc_curr = mp->tx_curr_desc_q;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001077 mp->tx_curr_desc_q = (tx_desc_curr + 1) % mp->tx_ring_size;
1078
1079 BUG_ON(mp->tx_curr_desc_q == mp->tx_used_desc_q);
1080
1081 return tx_desc_curr;
1082}
1083
1084/**
1085 * eth_tx_fill_frag_descs - fill tx hw descriptors for an skb's fragments.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086 *
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001087 * Ensure the data for each fragment to be transmitted is mapped properly,
1088 * then fill in descriptors in the tx hw queue.
1089 */
1090static void eth_tx_fill_frag_descs(struct mv643xx_private *mp,
1091 struct sk_buff *skb)
1092{
1093 int frag;
1094 int tx_index;
1095 struct eth_tx_desc *desc;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001096
1097 for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
1098 skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
1099
1100 tx_index = eth_alloc_tx_desc_index(mp);
1101 desc = &mp->p_tx_desc_area[tx_index];
1102
1103 desc->cmd_sts = ETH_BUFFER_OWNED_BY_DMA;
1104 /* Last Frag enables interrupt and frees the skb */
1105 if (frag == (skb_shinfo(skb)->nr_frags - 1)) {
1106 desc->cmd_sts |= ETH_ZERO_PADDING |
1107 ETH_TX_LAST_DESC |
1108 ETH_TX_ENABLE_INTERRUPT;
1109 mp->tx_skb[tx_index] = skb;
1110 } else
Al Viro05980772006-05-30 23:59:09 -04001111 mp->tx_skb[tx_index] = NULL;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001112
1113 desc = &mp->p_tx_desc_area[tx_index];
1114 desc->l4i_chk = 0;
1115 desc->byte_cnt = this_frag->size;
1116 desc->buf_ptr = dma_map_page(NULL, this_frag->page,
1117 this_frag->page_offset,
1118 this_frag->size,
1119 DMA_TO_DEVICE);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001120 }
1121}
1122
1123/**
1124 * eth_tx_submit_descs_for_skb - submit data from an skb to the tx hw
Linus Torvalds1da177e2005-04-16 15:20:36 -07001125 *
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001126 * Ensure the data for an skb to be transmitted is mapped properly,
1127 * then fill in descriptors in the tx hw queue and start the hardware.
1128 */
Dale Farnsworthff561ee2006-03-03 10:02:51 -07001129static void eth_tx_submit_descs_for_skb(struct mv643xx_private *mp,
1130 struct sk_buff *skb)
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001131{
1132 int tx_index;
1133 struct eth_tx_desc *desc;
1134 u32 cmd_sts;
1135 int length;
Dale Farnsworthff561ee2006-03-03 10:02:51 -07001136 int nr_frags = skb_shinfo(skb)->nr_frags;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001137
1138 cmd_sts = ETH_TX_FIRST_DESC | ETH_GEN_CRC | ETH_BUFFER_OWNED_BY_DMA;
1139
1140 tx_index = eth_alloc_tx_desc_index(mp);
1141 desc = &mp->p_tx_desc_area[tx_index];
1142
Dale Farnsworthff561ee2006-03-03 10:02:51 -07001143 if (nr_frags) {
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001144 eth_tx_fill_frag_descs(mp, skb);
1145
1146 length = skb_headlen(skb);
Al Viro05980772006-05-30 23:59:09 -04001147 mp->tx_skb[tx_index] = NULL;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001148 } else {
1149 cmd_sts |= ETH_ZERO_PADDING |
1150 ETH_TX_LAST_DESC |
1151 ETH_TX_ENABLE_INTERRUPT;
1152 length = skb->len;
1153 mp->tx_skb[tx_index] = skb;
1154 }
1155
1156 desc->byte_cnt = length;
1157 desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001158
Patrick McHardy84fa7932006-08-29 16:44:56 -07001159 if (skb->ip_summed == CHECKSUM_PARTIAL) {
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001160 BUG_ON(skb->protocol != ETH_P_IP);
1161
1162 cmd_sts |= ETH_GEN_TCP_UDP_CHECKSUM |
1163 ETH_GEN_IP_V_4_CHECKSUM |
Arnaldo Carvalho de Meloeddc9ec2007-04-20 22:47:35 -07001164 ip_hdr(skb)->ihl << ETH_TX_IHL_SHIFT;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001165
Arnaldo Carvalho de Meloeddc9ec2007-04-20 22:47:35 -07001166 switch (ip_hdr(skb)->protocol) {
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001167 case IPPROTO_UDP:
1168 cmd_sts |= ETH_UDP_FRAME;
Arnaldo Carvalho de Melo4bedb452007-03-13 14:28:48 -03001169 desc->l4i_chk = udp_hdr(skb)->check;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001170 break;
1171 case IPPROTO_TCP:
Arnaldo Carvalho de Meloaa8223c2007-04-10 21:04:22 -07001172 desc->l4i_chk = tcp_hdr(skb)->check;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001173 break;
1174 default:
1175 BUG();
1176 }
1177 } else {
1178 /* Errata BTS #50, IHL must be 5 if no HW checksum */
1179 cmd_sts |= 5 << ETH_TX_IHL_SHIFT;
1180 desc->l4i_chk = 0;
1181 }
1182
1183 /* ensure all other descriptors are written before first cmd_sts */
1184 wmb();
1185 desc->cmd_sts = cmd_sts;
1186
1187 /* ensure all descriptors are written before poking hardware */
1188 wmb();
Dale Farnsworthff561ee2006-03-03 10:02:51 -07001189 mv643xx_eth_port_enable_tx(mp->port_num, ETH_TX_QUEUES_ENABLED);
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001190
Dale Farnsworthff561ee2006-03-03 10:02:51 -07001191 mp->tx_desc_count += nr_frags + 1;
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001192}
1193
1194/**
1195 * mv643xx_eth_start_xmit - queue an skb to the hardware for transmission
Linus Torvalds1da177e2005-04-16 15:20:36 -07001196 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197 */
1198static int mv643xx_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
1199{
1200 struct mv643xx_private *mp = netdev_priv(dev);
1201 struct net_device_stats *stats = &mp->stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001202 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001203
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001204 BUG_ON(netif_queue_stopped(dev));
1205 BUG_ON(skb == NULL);
Dale Farnsworth94843562006-04-11 18:24:26 -07001206
1207 if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB) {
1208 printk(KERN_ERR "%s: transmit with queue full\n", dev->name);
1209 netif_stop_queue(dev);
1210 return 1;
1211 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001212
Paul Janzenf7ea3332006-01-16 16:52:13 -07001213 if (has_tiny_unaligned_frags(skb)) {
Herbert Xu364c6ba2006-06-09 16:10:40 -07001214 if (__skb_linearize(skb)) {
Paul Janzenf7ea3332006-01-16 16:52:13 -07001215 stats->tx_dropped++;
1216 printk(KERN_DEBUG "%s: failed to linearize tiny "
1217 "unaligned fragment\n", dev->name);
1218 return 1;
1219 }
1220 }
1221
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222 spin_lock_irqsave(&mp->lock, flags);
1223
Dale Farnsworthff561ee2006-03-03 10:02:51 -07001224 eth_tx_submit_descs_for_skb(mp, skb);
1225 stats->tx_bytes = skb->len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001226 stats->tx_packets++;
1227 dev->trans_start = jiffies;
1228
Dale Farnsworthc8aaea22006-03-03 10:02:05 -07001229 if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB)
1230 netif_stop_queue(dev);
1231
Linus Torvalds1da177e2005-04-16 15:20:36 -07001232 spin_unlock_irqrestore(&mp->lock, flags);
1233
1234 return 0; /* success */
1235}
1236
1237/*
1238 * mv643xx_eth_get_stats
1239 *
1240 * Returns a pointer to the interface statistics.
1241 *
1242 * Input : dev - a pointer to the required interface
1243 *
1244 * Output : a pointer to the interface's statistics
1245 */
1246
1247static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *dev)
1248{
1249 struct mv643xx_private *mp = netdev_priv(dev);
1250
1251 return &mp->stats;
1252}
1253
Dale Farnsworth63c9e542005-09-02 13:49:10 -07001254#ifdef CONFIG_NET_POLL_CONTROLLER
Dale Farnsworth63c9e542005-09-02 13:49:10 -07001255static void mv643xx_netpoll(struct net_device *netdev)
1256{
1257 struct mv643xx_private *mp = netdev_priv(netdev);
Dale Farnsworthc2e5b352006-01-16 17:00:24 -07001258 int port_num = mp->port_num;
Dale Farnsworth63c9e542005-09-02 13:49:10 -07001259
Dale Farnsworth7303fde2006-03-03 10:03:36 -07001260 mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
Dale Farnsworthc2e5b352006-01-16 17:00:24 -07001261 /* wait for previous write to complete */
1262 mv_read(MV643XX_ETH_INTERRUPT_MASK_REG(port_num));
1263
Al Viro9da3b1a2006-10-08 15:00:44 +01001264 mv643xx_eth_int_handler(netdev->irq, netdev);
Dale Farnsworthc2e5b352006-01-16 17:00:24 -07001265
Dale Farnsworth7303fde2006-03-03 10:03:36 -07001266 mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
Dale Farnsworth63c9e542005-09-02 13:49:10 -07001267}
1268#endif
1269
James Chapmand0412d92006-01-27 01:15:30 -07001270static void mv643xx_init_ethtool_cmd(struct net_device *dev, int phy_address,
1271 int speed, int duplex,
1272 struct ethtool_cmd *cmd)
1273{
1274 struct mv643xx_private *mp = netdev_priv(dev);
1275
1276 memset(cmd, 0, sizeof(*cmd));
1277
1278 cmd->port = PORT_MII;
1279 cmd->transceiver = XCVR_INTERNAL;
1280 cmd->phy_address = phy_address;
1281
1282 if (speed == 0) {
1283 cmd->autoneg = AUTONEG_ENABLE;
1284 /* mii lib checks, but doesn't use speed on AUTONEG_ENABLE */
1285 cmd->speed = SPEED_100;
1286 cmd->advertising = ADVERTISED_10baseT_Half |
1287 ADVERTISED_10baseT_Full |
1288 ADVERTISED_100baseT_Half |
1289 ADVERTISED_100baseT_Full;
1290 if (mp->mii.supports_gmii)
1291 cmd->advertising |= ADVERTISED_1000baseT_Full;
1292 } else {
1293 cmd->autoneg = AUTONEG_DISABLE;
1294 cmd->speed = speed;
1295 cmd->duplex = duplex;
1296 }
1297}
1298
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299/*/
1300 * mv643xx_eth_probe
1301 *
1302 * First function called after registering the network device.
1303 * It's purpose is to initialize the device as an ethernet device,
1304 * fill the ethernet device structure with pointers * to functions,
1305 * and set the MAC address of the interface
1306 *
1307 * Input : struct device *
1308 * Output : -ENOMEM if failed , 0 if success
1309 */
Russell King3ae5eae2005-11-09 22:32:44 +00001310static int mv643xx_eth_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001311{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001312 struct mv643xx_eth_platform_data *pd;
Dale Farnsworth84dd6192007-03-03 06:40:28 -07001313 int port_num;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314 struct mv643xx_private *mp;
1315 struct net_device *dev;
1316 u8 *p;
1317 struct resource *res;
1318 int err;
James Chapmand0412d92006-01-27 01:15:30 -07001319 struct ethtool_cmd cmd;
Dale Farnsworth01999872006-01-27 01:18:01 -07001320 int duplex = DUPLEX_HALF;
1321 int speed = 0; /* default to auto-negotiation */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322
Dale Farnsworth84dd6192007-03-03 06:40:28 -07001323 pd = pdev->dev.platform_data;
1324 if (pd == NULL) {
1325 printk(KERN_ERR "No mv643xx_eth_platform_data\n");
1326 return -ENODEV;
1327 }
1328
Linus Torvalds1da177e2005-04-16 15:20:36 -07001329 dev = alloc_etherdev(sizeof(struct mv643xx_private));
1330 if (!dev)
1331 return -ENOMEM;
1332
Russell King3ae5eae2005-11-09 22:32:44 +00001333 platform_set_drvdata(pdev, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001334
1335 mp = netdev_priv(dev);
1336
1337 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1338 BUG_ON(!res);
1339 dev->irq = res->start;
1340
Linus Torvalds1da177e2005-04-16 15:20:36 -07001341 dev->open = mv643xx_eth_open;
1342 dev->stop = mv643xx_eth_stop;
1343 dev->hard_start_xmit = mv643xx_eth_start_xmit;
1344 dev->get_stats = mv643xx_eth_get_stats;
1345 dev->set_mac_address = mv643xx_eth_set_mac_address;
1346 dev->set_multicast_list = mv643xx_eth_set_rx_mode;
1347
1348 /* No need to Tx Timeout */
1349 dev->tx_timeout = mv643xx_eth_tx_timeout;
1350#ifdef MV643XX_NAPI
1351 dev->poll = mv643xx_poll;
1352 dev->weight = 64;
1353#endif
1354
Dale Farnsworth63c9e542005-09-02 13:49:10 -07001355#ifdef CONFIG_NET_POLL_CONTROLLER
1356 dev->poll_controller = mv643xx_netpoll;
1357#endif
1358
Linus Torvalds1da177e2005-04-16 15:20:36 -07001359 dev->watchdog_timeo = 2 * HZ;
1360 dev->tx_queue_len = mp->tx_ring_size;
1361 dev->base_addr = 0;
1362 dev->change_mtu = mv643xx_eth_change_mtu;
James Chapmand0412d92006-01-27 01:15:30 -07001363 dev->do_ioctl = mv643xx_eth_do_ioctl;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001364 SET_ETHTOOL_OPS(dev, &mv643xx_ethtool_ops);
1365
1366#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
1367#ifdef MAX_SKB_FRAGS
1368 /*
1369 * Zero copy can only work if we use Discovery II memory. Else, we will
1370 * have to map the buffers to ISA memory which is only 16 MB
1371 */
Wolfram Joost63890572006-01-16 16:57:41 -07001372 dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373#endif
1374#endif
1375
1376 /* Configure the timeout task */
Al Viro91c7c562006-12-06 19:50:06 +00001377 INIT_WORK(&mp->tx_timeout_task, mv643xx_eth_tx_timeout_task);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001378
1379 spin_lock_init(&mp->lock);
1380
Gabriel Paubertfadac402007-03-23 12:03:52 -07001381 port_num = mp->port_num = pd->port_number;
Dale Farnsworth84dd6192007-03-03 06:40:28 -07001382
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383 /* set default config values */
1384 eth_port_uc_addr_get(dev, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001385 mp->rx_ring_size = MV643XX_ETH_PORT_DEFAULT_RECEIVE_QUEUE_SIZE;
1386 mp->tx_ring_size = MV643XX_ETH_PORT_DEFAULT_TRANSMIT_QUEUE_SIZE;
1387
Dale Farnsworth84dd6192007-03-03 06:40:28 -07001388 if (is_valid_ether_addr(pd->mac_addr))
1389 memcpy(dev->dev_addr, pd->mac_addr, 6);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001390
Dale Farnsworth84dd6192007-03-03 06:40:28 -07001391 if (pd->phy_addr || pd->force_phy_addr)
1392 ethernet_phy_set(port_num, pd->phy_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001393
Dale Farnsworth84dd6192007-03-03 06:40:28 -07001394 if (pd->rx_queue_size)
1395 mp->rx_ring_size = pd->rx_queue_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001396
Dale Farnsworth84dd6192007-03-03 06:40:28 -07001397 if (pd->tx_queue_size)
1398 mp->tx_ring_size = pd->tx_queue_size;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001399
Dale Farnsworth84dd6192007-03-03 06:40:28 -07001400 if (pd->tx_sram_size) {
1401 mp->tx_sram_size = pd->tx_sram_size;
1402 mp->tx_sram_addr = pd->tx_sram_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001403 }
1404
Dale Farnsworth84dd6192007-03-03 06:40:28 -07001405 if (pd->rx_sram_size) {
1406 mp->rx_sram_size = pd->rx_sram_size;
1407 mp->rx_sram_addr = pd->rx_sram_addr;
1408 }
1409
1410 duplex = pd->duplex;
1411 speed = pd->speed;
1412
James Chapmanc28a4f82006-01-27 01:13:15 -07001413 /* Hook up MII support for ethtool */
1414 mp->mii.dev = dev;
1415 mp->mii.mdio_read = mv643xx_mdio_read;
1416 mp->mii.mdio_write = mv643xx_mdio_write;
1417 mp->mii.phy_id = ethernet_phy_get(port_num);
1418 mp->mii.phy_id_mask = 0x3f;
1419 mp->mii.reg_num_mask = 0x1f;
1420
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421 err = ethernet_phy_detect(port_num);
1422 if (err) {
1423 pr_debug("MV643xx ethernet port %d: "
1424 "No PHY detected at addr %d\n",
1425 port_num, ethernet_phy_get(port_num));
James Chapmand0412d92006-01-27 01:15:30 -07001426 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001427 }
1428
Dale Farnsworth01999872006-01-27 01:18:01 -07001429 ethernet_phy_reset(port_num);
James Chapmanc28a4f82006-01-27 01:13:15 -07001430 mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii);
James Chapmand0412d92006-01-27 01:15:30 -07001431 mv643xx_init_ethtool_cmd(dev, mp->mii.phy_id, speed, duplex, &cmd);
1432 mv643xx_eth_update_pscr(dev, &cmd);
1433 mv643xx_set_settings(dev, &cmd);
James Chapmanc28a4f82006-01-27 01:13:15 -07001434
Olaf Heringb0b8dab2006-04-27 18:23:49 -07001435 SET_MODULE_OWNER(dev);
1436 SET_NETDEV_DEV(dev, &pdev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001437 err = register_netdev(dev);
1438 if (err)
1439 goto out;
1440
1441 p = dev->dev_addr;
1442 printk(KERN_NOTICE
1443 "%s: port %d with MAC address %02x:%02x:%02x:%02x:%02x:%02x\n",
1444 dev->name, port_num, p[0], p[1], p[2], p[3], p[4], p[5]);
1445
1446 if (dev->features & NETIF_F_SG)
1447 printk(KERN_NOTICE "%s: Scatter Gather Enabled\n", dev->name);
1448
1449 if (dev->features & NETIF_F_IP_CSUM)
1450 printk(KERN_NOTICE "%s: TX TCP/IP Checksumming Supported\n",
1451 dev->name);
1452
1453#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
1454 printk(KERN_NOTICE "%s: RX TCP/UDP Checksum Offload ON \n", dev->name);
1455#endif
1456
1457#ifdef MV643XX_COAL
1458 printk(KERN_NOTICE "%s: TX and RX Interrupt Coalescing ON \n",
1459 dev->name);
1460#endif
1461
1462#ifdef MV643XX_NAPI
1463 printk(KERN_NOTICE "%s: RX NAPI Enabled \n", dev->name);
1464#endif
1465
Nicolas DETb1529872005-10-28 17:46:30 -07001466 if (mp->tx_sram_size > 0)
1467 printk(KERN_NOTICE "%s: Using SRAM\n", dev->name);
1468
Linus Torvalds1da177e2005-04-16 15:20:36 -07001469 return 0;
1470
1471out:
1472 free_netdev(dev);
1473
1474 return err;
1475}
1476
Russell King3ae5eae2005-11-09 22:32:44 +00001477static int mv643xx_eth_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001478{
Russell King3ae5eae2005-11-09 22:32:44 +00001479 struct net_device *dev = platform_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001480
1481 unregister_netdev(dev);
1482 flush_scheduled_work();
1483
1484 free_netdev(dev);
Russell King3ae5eae2005-11-09 22:32:44 +00001485 platform_set_drvdata(pdev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001486 return 0;
1487}
1488
Russell King3ae5eae2005-11-09 22:32:44 +00001489static int mv643xx_eth_shared_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001490{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001491 struct resource *res;
1492
1493 printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n");
1494
1495 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1496 if (res == NULL)
1497 return -ENODEV;
1498
1499 mv643xx_eth_shared_base = ioremap(res->start,
1500 MV643XX_ETH_SHARED_REGS_SIZE);
1501 if (mv643xx_eth_shared_base == NULL)
1502 return -ENOMEM;
1503
1504 return 0;
1505
1506}
1507
Russell King3ae5eae2005-11-09 22:32:44 +00001508static int mv643xx_eth_shared_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001509{
1510 iounmap(mv643xx_eth_shared_base);
1511 mv643xx_eth_shared_base = NULL;
1512
1513 return 0;
1514}
1515
Dale Farnsworthd57ab6f2007-03-20 16:38:04 -07001516static void mv643xx_eth_shutdown(struct platform_device *pdev)
1517{
1518 struct net_device *dev = platform_get_drvdata(pdev);
1519 struct mv643xx_private *mp = netdev_priv(dev);
1520 unsigned int port_num = mp->port_num;
1521
1522 /* Mask all interrupts on ethernet port */
1523 mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), 0);
1524 mv_read (MV643XX_ETH_INTERRUPT_MASK_REG(port_num));
1525
1526 eth_port_reset(port_num);
1527}
1528
Russell King3ae5eae2005-11-09 22:32:44 +00001529static struct platform_driver mv643xx_eth_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001530 .probe = mv643xx_eth_probe,
1531 .remove = mv643xx_eth_remove,
Dale Farnsworthd57ab6f2007-03-20 16:38:04 -07001532 .shutdown = mv643xx_eth_shutdown,
Russell King3ae5eae2005-11-09 22:32:44 +00001533 .driver = {
1534 .name = MV643XX_ETH_NAME,
1535 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07001536};
1537
Russell King3ae5eae2005-11-09 22:32:44 +00001538static struct platform_driver mv643xx_eth_shared_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001539 .probe = mv643xx_eth_shared_probe,
1540 .remove = mv643xx_eth_shared_remove,
Russell King3ae5eae2005-11-09 22:32:44 +00001541 .driver = {
1542 .name = MV643XX_ETH_SHARED_NAME,
1543 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07001544};
1545
1546/*
1547 * mv643xx_init_module
1548 *
1549 * Registers the network drivers into the Linux kernel
1550 *
1551 * Input : N/A
1552 *
1553 * Output : N/A
1554 */
1555static int __init mv643xx_init_module(void)
1556{
1557 int rc;
1558
Russell King3ae5eae2005-11-09 22:32:44 +00001559 rc = platform_driver_register(&mv643xx_eth_shared_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001560 if (!rc) {
Russell King3ae5eae2005-11-09 22:32:44 +00001561 rc = platform_driver_register(&mv643xx_eth_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001562 if (rc)
Russell King3ae5eae2005-11-09 22:32:44 +00001563 platform_driver_unregister(&mv643xx_eth_shared_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001564 }
1565 return rc;
1566}
1567
1568/*
1569 * mv643xx_cleanup_module
1570 *
1571 * Registers the network drivers into the Linux kernel
1572 *
1573 * Input : N/A
1574 *
1575 * Output : N/A
1576 */
1577static void __exit mv643xx_cleanup_module(void)
1578{
Russell King3ae5eae2005-11-09 22:32:44 +00001579 platform_driver_unregister(&mv643xx_eth_driver);
1580 platform_driver_unregister(&mv643xx_eth_shared_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001581}
1582
1583module_init(mv643xx_init_module);
1584module_exit(mv643xx_cleanup_module);
1585
1586MODULE_LICENSE("GPL");
1587MODULE_AUTHOR( "Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, Manish Lachwani"
1588 " and Dale Farnsworth");
1589MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
1590
1591/*
1592 * The second part is the low level driver of the gigE ethernet ports.
1593 */
1594
1595/*
1596 * Marvell's Gigabit Ethernet controller low level driver
1597 *
1598 * DESCRIPTION:
1599 * This file introduce low level API to Marvell's Gigabit Ethernet
1600 * controller. This Gigabit Ethernet Controller driver API controls
1601 * 1) Operations (i.e. port init, start, reset etc').
1602 * 2) Data flow (i.e. port send, receive etc').
1603 * Each Gigabit Ethernet port is controlled via
1604 * struct mv643xx_private.
1605 * This struct includes user configuration information as well as
1606 * driver internal data needed for its operations.
1607 *
1608 * Supported Features:
1609 * - This low level driver is OS independent. Allocating memory for
1610 * the descriptor rings and buffers are not within the scope of
1611 * this driver.
1612 * - The user is free from Rx/Tx queue managing.
1613 * - This low level driver introduce functionality API that enable
1614 * the to operate Marvell's Gigabit Ethernet Controller in a
1615 * convenient way.
1616 * - Simple Gigabit Ethernet port operation API.
1617 * - Simple Gigabit Ethernet port data flow API.
1618 * - Data flow and operation API support per queue functionality.
1619 * - Support cached descriptors for better performance.
1620 * - Enable access to all four DRAM banks and internal SRAM memory
1621 * spaces.
1622 * - PHY access and control API.
1623 * - Port control register configuration API.
1624 * - Full control over Unicast and Multicast MAC configurations.
1625 *
1626 * Operation flow:
1627 *
1628 * Initialization phase
1629 * This phase complete the initialization of the the
1630 * mv643xx_private struct.
1631 * User information regarding port configuration has to be set
1632 * prior to calling the port initialization routine.
1633 *
1634 * In this phase any port Tx/Rx activity is halted, MIB counters
1635 * are cleared, PHY address is set according to user parameter and
1636 * access to DRAM and internal SRAM memory spaces.
1637 *
1638 * Driver ring initialization
1639 * Allocating memory for the descriptor rings and buffers is not
1640 * within the scope of this driver. Thus, the user is required to
1641 * allocate memory for the descriptors ring and buffers. Those
1642 * memory parameters are used by the Rx and Tx ring initialization
1643 * routines in order to curve the descriptor linked list in a form
1644 * of a ring.
1645 * Note: Pay special attention to alignment issues when using
1646 * cached descriptors/buffers. In this phase the driver store
1647 * information in the mv643xx_private struct regarding each queue
1648 * ring.
1649 *
1650 * Driver start
1651 * This phase prepares the Ethernet port for Rx and Tx activity.
1652 * It uses the information stored in the mv643xx_private struct to
1653 * initialize the various port registers.
1654 *
1655 * Data flow:
1656 * All packet references to/from the driver are done using
1657 * struct pkt_info.
1658 * This struct is a unified struct used with Rx and Tx operations.
1659 * This way the user is not required to be familiar with neither
1660 * Tx nor Rx descriptors structures.
1661 * The driver's descriptors rings are management by indexes.
1662 * Those indexes controls the ring resources and used to indicate
1663 * a SW resource error:
1664 * 'current'
1665 * This index points to the current available resource for use. For
1666 * example in Rx process this index will point to the descriptor
1667 * that will be passed to the user upon calling the receive
1668 * routine. In Tx process, this index will point to the descriptor
1669 * that will be assigned with the user packet info and transmitted.
1670 * 'used'
1671 * This index points to the descriptor that need to restore its
1672 * resources. For example in Rx process, using the Rx buffer return
1673 * API will attach the buffer returned in packet info to the
1674 * descriptor pointed by 'used'. In Tx process, using the Tx
1675 * descriptor return will merely return the user packet info with
1676 * the command status of the transmitted buffer pointed by the
1677 * 'used' index. Nevertheless, it is essential to use this routine
1678 * to update the 'used' index.
1679 * 'first'
1680 * This index supports Tx Scatter-Gather. It points to the first
1681 * descriptor of a packet assembled of multiple buffers. For
1682 * example when in middle of Such packet we have a Tx resource
1683 * error the 'curr' index get the value of 'first' to indicate
1684 * that the ring returned to its state before trying to transmit
1685 * this packet.
1686 *
1687 * Receive operation:
1688 * The eth_port_receive API set the packet information struct,
1689 * passed by the caller, with received information from the
1690 * 'current' SDMA descriptor.
1691 * It is the user responsibility to return this resource back
1692 * to the Rx descriptor ring to enable the reuse of this source.
1693 * Return Rx resource is done using the eth_rx_return_buff API.
1694 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07001695 * Prior to calling the initialization routine eth_port_init() the user
1696 * must set the following fields under mv643xx_private struct:
1697 * port_num User Ethernet port number.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001698 * port_config User port configuration value.
1699 * port_config_extend User port config extend value.
1700 * port_sdma_config User port SDMA config value.
1701 * port_serial_control User port serial control value.
1702 *
1703 * This driver data flow is done using the struct pkt_info which
1704 * is a unified struct for Rx and Tx operations:
1705 *
1706 * byte_cnt Tx/Rx descriptor buffer byte count.
1707 * l4i_chk CPU provided TCP Checksum. For Tx operation
1708 * only.
1709 * cmd_sts Tx/Rx descriptor command status.
1710 * buf_ptr Tx/Rx descriptor buffer pointer.
1711 * return_info Tx/Rx user resource return information.
1712 */
1713
Linus Torvalds1da177e2005-04-16 15:20:36 -07001714/* PHY routines */
1715static int ethernet_phy_get(unsigned int eth_port_num);
1716static void ethernet_phy_set(unsigned int eth_port_num, int phy_addr);
1717
1718/* Ethernet Port routines */
Dale Farnsworthcf4086c2006-01-27 01:07:48 -07001719static void eth_port_set_filter_table_entry(int table, unsigned char entry);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720
1721/*
1722 * eth_port_init - Initialize the Ethernet port driver
1723 *
1724 * DESCRIPTION:
1725 * This function prepares the ethernet port to start its activity:
1726 * 1) Completes the ethernet port driver struct initialization toward port
1727 * start routine.
1728 * 2) Resets the device to a quiescent state in case of warm reboot.
1729 * 3) Enable SDMA access to all four DRAM banks as well as internal SRAM.
1730 * 4) Clean MAC tables. The reset status of those tables is unknown.
1731 * 5) Set PHY address.
1732 * Note: Call this routine prior to eth_port_start routine and after
1733 * setting user values in the user fields of Ethernet port control
1734 * struct.
1735 *
1736 * INPUT:
1737 * struct mv643xx_private *mp Ethernet port control struct
1738 *
1739 * OUTPUT:
1740 * See description.
1741 *
1742 * RETURN:
1743 * None.
1744 */
1745static void eth_port_init(struct mv643xx_private *mp)
1746{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001747 mp->rx_resource_err = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001748
1749 eth_port_reset(mp->port_num);
1750
1751 eth_port_init_mac_tables(mp->port_num);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001752}
1753
1754/*
1755 * eth_port_start - Start the Ethernet port activity.
1756 *
1757 * DESCRIPTION:
1758 * This routine prepares the Ethernet port for Rx and Tx activity:
1759 * 1. Initialize Tx and Rx Current Descriptor Pointer for each queue that
1760 * has been initialized a descriptor's ring (using
1761 * ether_init_tx_desc_ring for Tx and ether_init_rx_desc_ring for Rx)
1762 * 2. Initialize and enable the Ethernet configuration port by writing to
1763 * the port's configuration and command registers.
1764 * 3. Initialize and enable the SDMA by writing to the SDMA's
1765 * configuration and command registers. After completing these steps,
1766 * the ethernet port SDMA can starts to perform Rx and Tx activities.
1767 *
1768 * Note: Each Rx and Tx queue descriptor's list must be initialized prior
1769 * to calling this function (use ether_init_tx_desc_ring for Tx queues
1770 * and ether_init_rx_desc_ring for Rx queues).
1771 *
1772 * INPUT:
Dale Farnsworthed9b5d42006-01-27 01:06:38 -07001773 * dev - a pointer to the required interface
Linus Torvalds1da177e2005-04-16 15:20:36 -07001774 *
1775 * OUTPUT:
1776 * Ethernet port is ready to receive and transmit.
1777 *
1778 * RETURN:
1779 * None.
1780 */
Dale Farnsworthed9b5d42006-01-27 01:06:38 -07001781static void eth_port_start(struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001782{
Dale Farnsworthed9b5d42006-01-27 01:06:38 -07001783 struct mv643xx_private *mp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001784 unsigned int port_num = mp->port_num;
1785 int tx_curr_desc, rx_curr_desc;
James Chapmand0412d92006-01-27 01:15:30 -07001786 u32 pscr;
1787 struct ethtool_cmd ethtool_cmd;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001788
1789 /* Assignment of Tx CTRP of given queue */
1790 tx_curr_desc = mp->tx_curr_desc_q;
1791 mv_write(MV643XX_ETH_TX_CURRENT_QUEUE_DESC_PTR_0(port_num),
1792 (u32)((struct eth_tx_desc *)mp->tx_desc_dma + tx_curr_desc));
1793
1794 /* Assignment of Rx CRDP of given queue */
1795 rx_curr_desc = mp->rx_curr_desc_q;
1796 mv_write(MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_0(port_num),
1797 (u32)((struct eth_rx_desc *)mp->rx_desc_dma + rx_curr_desc));
1798
1799 /* Add the assigned Ethernet address to the port's address table */
Dale Farnsworthed9b5d42006-01-27 01:06:38 -07001800 eth_port_uc_addr_set(port_num, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001801
1802 /* Assign port configuration and command. */
Dale Farnsworth01999872006-01-27 01:18:01 -07001803 mv_write(MV643XX_ETH_PORT_CONFIG_REG(port_num),
1804 MV643XX_ETH_PORT_CONFIG_DEFAULT_VALUE);
1805
1806 mv_write(MV643XX_ETH_PORT_CONFIG_EXTEND_REG(port_num),
1807 MV643XX_ETH_PORT_CONFIG_EXTEND_DEFAULT_VALUE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001808
James Chapmand0412d92006-01-27 01:15:30 -07001809 pscr = mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num));
Dale Farnsworth01999872006-01-27 01:18:01 -07001810
1811 pscr &= ~(MV643XX_ETH_SERIAL_PORT_ENABLE | MV643XX_ETH_FORCE_LINK_PASS);
James Chapmand0412d92006-01-27 01:15:30 -07001812 mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001813
James Chapmand0412d92006-01-27 01:15:30 -07001814 pscr |= MV643XX_ETH_DISABLE_AUTO_NEG_FOR_FLOW_CTRL |
1815 MV643XX_ETH_DISABLE_AUTO_NEG_SPEED_GMII |
1816 MV643XX_ETH_DISABLE_AUTO_NEG_FOR_DUPLX |
1817 MV643XX_ETH_DO_NOT_FORCE_LINK_FAIL |
1818 MV643XX_ETH_SERIAL_PORT_CONTROL_RESERVED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001819
James Chapmand0412d92006-01-27 01:15:30 -07001820 mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001821
James Chapmand0412d92006-01-27 01:15:30 -07001822 pscr |= MV643XX_ETH_SERIAL_PORT_ENABLE;
1823 mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001824
1825 /* Assign port SDMA configuration */
Dale Farnsworth01999872006-01-27 01:18:01 -07001826 mv_write(MV643XX_ETH_SDMA_CONFIG_REG(port_num),
1827 MV643XX_ETH_PORT_SDMA_CONFIG_DEFAULT_VALUE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001828
1829 /* Enable port Rx. */
Dale Farnsworthff561ee2006-03-03 10:02:51 -07001830 mv643xx_eth_port_enable_rx(port_num, ETH_RX_QUEUES_ENABLED);
Dale Farnsworth8f543712005-09-02 12:34:35 -07001831
1832 /* Disable port bandwidth limits by clearing MTU register */
1833 mv_write(MV643XX_ETH_MAXIMUM_TRANSMIT_UNIT(port_num), 0);
James Chapmand0412d92006-01-27 01:15:30 -07001834
1835 /* save phy settings across reset */
1836 mv643xx_get_settings(dev, &ethtool_cmd);
1837 ethernet_phy_reset(mp->port_num);
1838 mv643xx_set_settings(dev, &ethtool_cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001839}
1840
1841/*
1842 * eth_port_uc_addr_set - This function Set the port Unicast address.
1843 *
1844 * DESCRIPTION:
1845 * This function Set the port Ethernet MAC address.
1846 *
1847 * INPUT:
1848 * unsigned int eth_port_num Port number.
1849 * char * p_addr Address to be set
1850 *
1851 * OUTPUT:
Dale Farnsworthcf4086c2006-01-27 01:07:48 -07001852 * Set MAC address low and high registers. also calls
1853 * eth_port_set_filter_table_entry() to set the unicast
1854 * table with the proper information.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001855 *
1856 * RETURN:
1857 * N/A.
1858 *
1859 */
1860static void eth_port_uc_addr_set(unsigned int eth_port_num,
1861 unsigned char *p_addr)
1862{
1863 unsigned int mac_h;
1864 unsigned int mac_l;
Dale Farnsworthcf4086c2006-01-27 01:07:48 -07001865 int table;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001866
1867 mac_l = (p_addr[4] << 8) | (p_addr[5]);
1868 mac_h = (p_addr[0] << 24) | (p_addr[1] << 16) | (p_addr[2] << 8) |
1869 (p_addr[3] << 0);
1870
1871 mv_write(MV643XX_ETH_MAC_ADDR_LOW(eth_port_num), mac_l);
1872 mv_write(MV643XX_ETH_MAC_ADDR_HIGH(eth_port_num), mac_h);
1873
1874 /* Accept frames of this address */
Dale Farnsworthcf4086c2006-01-27 01:07:48 -07001875 table = MV643XX_ETH_DA_FILTER_UNICAST_TABLE_BASE(eth_port_num);
1876 eth_port_set_filter_table_entry(table, p_addr[5] & 0x0f);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001877}
1878
1879/*
1880 * eth_port_uc_addr_get - This function retrieves the port Unicast address
1881 * (MAC address) from the ethernet hw registers.
1882 *
1883 * DESCRIPTION:
1884 * This function retrieves the port Ethernet MAC address.
1885 *
1886 * INPUT:
1887 * unsigned int eth_port_num Port number.
1888 * char *MacAddr pointer where the MAC address is stored
1889 *
1890 * OUTPUT:
1891 * Copy the MAC address to the location pointed to by MacAddr
1892 *
1893 * RETURN:
1894 * N/A.
1895 *
1896 */
1897static void eth_port_uc_addr_get(struct net_device *dev, unsigned char *p_addr)
1898{
1899 struct mv643xx_private *mp = netdev_priv(dev);
1900 unsigned int mac_h;
1901 unsigned int mac_l;
1902
1903 mac_h = mv_read(MV643XX_ETH_MAC_ADDR_HIGH(mp->port_num));
1904 mac_l = mv_read(MV643XX_ETH_MAC_ADDR_LOW(mp->port_num));
1905
1906 p_addr[0] = (mac_h >> 24) & 0xff;
1907 p_addr[1] = (mac_h >> 16) & 0xff;
1908 p_addr[2] = (mac_h >> 8) & 0xff;
1909 p_addr[3] = mac_h & 0xff;
1910 p_addr[4] = (mac_l >> 8) & 0xff;
1911 p_addr[5] = mac_l & 0xff;
1912}
1913
1914/*
Dale Farnsworth16e03012006-01-16 16:50:02 -07001915 * The entries in each table are indexed by a hash of a packet's MAC
1916 * address. One bit in each entry determines whether the packet is
1917 * accepted. There are 4 entries (each 8 bits wide) in each register
1918 * of the table. The bits in each entry are defined as follows:
1919 * 0 Accept=1, Drop=0
1920 * 3-1 Queue (ETH_Q0=0)
1921 * 7-4 Reserved = 0;
1922 */
1923static void eth_port_set_filter_table_entry(int table, unsigned char entry)
1924{
1925 unsigned int table_reg;
1926 unsigned int tbl_offset;
1927 unsigned int reg_offset;
1928
1929 tbl_offset = (entry / 4) * 4; /* Register offset of DA table entry */
1930 reg_offset = entry % 4; /* Entry offset within the register */
1931
1932 /* Set "accepts frame bit" at specified table entry */
1933 table_reg = mv_read(table + tbl_offset);
1934 table_reg |= 0x01 << (8 * reg_offset);
1935 mv_write(table + tbl_offset, table_reg);
1936}
1937
1938/*
1939 * eth_port_mc_addr - Multicast address settings.
1940 *
1941 * The MV device supports multicast using two tables:
1942 * 1) Special Multicast Table for MAC addresses of the form
1943 * 0x01-00-5E-00-00-XX (where XX is between 0x00 and 0x_FF).
1944 * The MAC DA[7:0] bits are used as a pointer to the Special Multicast
1945 * Table entries in the DA-Filter table.
1946 * 2) Other Multicast Table for multicast of another type. A CRC-8bit
1947 * is used as an index to the Other Multicast Table entries in the
1948 * DA-Filter table. This function calculates the CRC-8bit value.
1949 * In either case, eth_port_set_filter_table_entry() is then called
1950 * to set to set the actual table entry.
1951 */
1952static void eth_port_mc_addr(unsigned int eth_port_num, unsigned char *p_addr)
1953{
1954 unsigned int mac_h;
1955 unsigned int mac_l;
1956 unsigned char crc_result = 0;
1957 int table;
1958 int mac_array[48];
1959 int crc[8];
1960 int i;
1961
1962 if ((p_addr[0] == 0x01) && (p_addr[1] == 0x00) &&
1963 (p_addr[2] == 0x5E) && (p_addr[3] == 0x00) && (p_addr[4] == 0x00)) {
1964 table = MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
1965 (eth_port_num);
1966 eth_port_set_filter_table_entry(table, p_addr[5]);
1967 return;
1968 }
1969
1970 /* Calculate CRC-8 out of the given address */
1971 mac_h = (p_addr[0] << 8) | (p_addr[1]);
1972 mac_l = (p_addr[2] << 24) | (p_addr[3] << 16) |
1973 (p_addr[4] << 8) | (p_addr[5] << 0);
1974
1975 for (i = 0; i < 32; i++)
1976 mac_array[i] = (mac_l >> i) & 0x1;
1977 for (i = 32; i < 48; i++)
1978 mac_array[i] = (mac_h >> (i - 32)) & 0x1;
1979
1980 crc[0] = mac_array[45] ^ mac_array[43] ^ mac_array[40] ^ mac_array[39] ^
1981 mac_array[35] ^ mac_array[34] ^ mac_array[31] ^ mac_array[30] ^
1982 mac_array[28] ^ mac_array[23] ^ mac_array[21] ^ mac_array[19] ^
1983 mac_array[18] ^ mac_array[16] ^ mac_array[14] ^ mac_array[12] ^
1984 mac_array[8] ^ mac_array[7] ^ mac_array[6] ^ mac_array[0];
1985
1986 crc[1] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^
1987 mac_array[41] ^ mac_array[39] ^ mac_array[36] ^ mac_array[34] ^
1988 mac_array[32] ^ mac_array[30] ^ mac_array[29] ^ mac_array[28] ^
1989 mac_array[24] ^ mac_array[23] ^ mac_array[22] ^ mac_array[21] ^
1990 mac_array[20] ^ mac_array[18] ^ mac_array[17] ^ mac_array[16] ^
1991 mac_array[15] ^ mac_array[14] ^ mac_array[13] ^ mac_array[12] ^
1992 mac_array[9] ^ mac_array[6] ^ mac_array[1] ^ mac_array[0];
1993
1994 crc[2] = mac_array[47] ^ mac_array[46] ^ mac_array[44] ^ mac_array[43] ^
1995 mac_array[42] ^ mac_array[39] ^ mac_array[37] ^ mac_array[34] ^
1996 mac_array[33] ^ mac_array[29] ^ mac_array[28] ^ mac_array[25] ^
1997 mac_array[24] ^ mac_array[22] ^ mac_array[17] ^ mac_array[15] ^
1998 mac_array[13] ^ mac_array[12] ^ mac_array[10] ^ mac_array[8] ^
1999 mac_array[6] ^ mac_array[2] ^ mac_array[1] ^ mac_array[0];
2000
2001 crc[3] = mac_array[47] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^
2002 mac_array[40] ^ mac_array[38] ^ mac_array[35] ^ mac_array[34] ^
2003 mac_array[30] ^ mac_array[29] ^ mac_array[26] ^ mac_array[25] ^
2004 mac_array[23] ^ mac_array[18] ^ mac_array[16] ^ mac_array[14] ^
2005 mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[7] ^
2006 mac_array[3] ^ mac_array[2] ^ mac_array[1];
2007
2008 crc[4] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[41] ^
2009 mac_array[39] ^ mac_array[36] ^ mac_array[35] ^ mac_array[31] ^
2010 mac_array[30] ^ mac_array[27] ^ mac_array[26] ^ mac_array[24] ^
2011 mac_array[19] ^ mac_array[17] ^ mac_array[15] ^ mac_array[14] ^
2012 mac_array[12] ^ mac_array[10] ^ mac_array[8] ^ mac_array[4] ^
2013 mac_array[3] ^ mac_array[2];
2014
2015 crc[5] = mac_array[47] ^ mac_array[46] ^ mac_array[45] ^ mac_array[42] ^
2016 mac_array[40] ^ mac_array[37] ^ mac_array[36] ^ mac_array[32] ^
2017 mac_array[31] ^ mac_array[28] ^ mac_array[27] ^ mac_array[25] ^
2018 mac_array[20] ^ mac_array[18] ^ mac_array[16] ^ mac_array[15] ^
2019 mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[5] ^
2020 mac_array[4] ^ mac_array[3];
2021
2022 crc[6] = mac_array[47] ^ mac_array[46] ^ mac_array[43] ^ mac_array[41] ^
2023 mac_array[38] ^ mac_array[37] ^ mac_array[33] ^ mac_array[32] ^
2024 mac_array[29] ^ mac_array[28] ^ mac_array[26] ^ mac_array[21] ^
2025 mac_array[19] ^ mac_array[17] ^ mac_array[16] ^ mac_array[14] ^
2026 mac_array[12] ^ mac_array[10] ^ mac_array[6] ^ mac_array[5] ^
2027 mac_array[4];
2028
2029 crc[7] = mac_array[47] ^ mac_array[44] ^ mac_array[42] ^ mac_array[39] ^
2030 mac_array[38] ^ mac_array[34] ^ mac_array[33] ^ mac_array[30] ^
2031 mac_array[29] ^ mac_array[27] ^ mac_array[22] ^ mac_array[20] ^
2032 mac_array[18] ^ mac_array[17] ^ mac_array[15] ^ mac_array[13] ^
2033 mac_array[11] ^ mac_array[7] ^ mac_array[6] ^ mac_array[5];
2034
2035 for (i = 0; i < 8; i++)
2036 crc_result = crc_result | (crc[i] << i);
2037
2038 table = MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE(eth_port_num);
2039 eth_port_set_filter_table_entry(table, crc_result);
2040}
2041
2042/*
2043 * Set the entire multicast list based on dev->mc_list.
2044 */
2045static void eth_port_set_multicast_list(struct net_device *dev)
2046{
2047
2048 struct dev_mc_list *mc_list;
2049 int i;
2050 int table_index;
2051 struct mv643xx_private *mp = netdev_priv(dev);
2052 unsigned int eth_port_num = mp->port_num;
2053
2054 /* If the device is in promiscuous mode or in all multicast mode,
2055 * we will fully populate both multicast tables with accept.
2056 * This is guaranteed to yield a match on all multicast addresses...
2057 */
2058 if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI)) {
2059 for (table_index = 0; table_index <= 0xFC; table_index += 4) {
Dale Farnsworthb4de9052006-01-27 01:04:43 -07002060 /* Set all entries in DA filter special multicast
2061 * table (Ex_dFSMT)
2062 * Set for ETH_Q0 for now
2063 * Bits
2064 * 0 Accept=1, Drop=0
2065 * 3-1 Queue ETH_Q0=0
2066 * 7-4 Reserved = 0;
2067 */
2068 mv_write(MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101);
Dale Farnsworth16e03012006-01-16 16:50:02 -07002069
Dale Farnsworthb4de9052006-01-27 01:04:43 -07002070 /* Set all entries in DA filter other multicast
2071 * table (Ex_dFOMT)
2072 * Set for ETH_Q0 for now
2073 * Bits
2074 * 0 Accept=1, Drop=0
2075 * 3-1 Queue ETH_Q0=0
2076 * 7-4 Reserved = 0;
2077 */
2078 mv_write(MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101);
2079 }
Dale Farnsworth16e03012006-01-16 16:50:02 -07002080 return;
2081 }
2082
2083 /* We will clear out multicast tables every time we get the list.
2084 * Then add the entire new list...
2085 */
2086 for (table_index = 0; table_index <= 0xFC; table_index += 4) {
2087 /* Clear DA filter special multicast table (Ex_dFSMT) */
2088 mv_write(MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
2089 (eth_port_num) + table_index, 0);
2090
2091 /* Clear DA filter other multicast table (Ex_dFOMT) */
2092 mv_write(MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE
2093 (eth_port_num) + table_index, 0);
2094 }
2095
2096 /* Get pointer to net_device multicast list and add each one... */
2097 for (i = 0, mc_list = dev->mc_list;
2098 (i < 256) && (mc_list != NULL) && (i < dev->mc_count);
2099 i++, mc_list = mc_list->next)
2100 if (mc_list->dmi_addrlen == 6)
2101 eth_port_mc_addr(eth_port_num, mc_list->dmi_addr);
2102}
2103
2104/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002105 * eth_port_init_mac_tables - Clear all entrance in the UC, SMC and OMC tables
2106 *
2107 * DESCRIPTION:
2108 * Go through all the DA filter tables (Unicast, Special Multicast &
2109 * Other Multicast) and set each entry to 0.
2110 *
2111 * INPUT:
2112 * unsigned int eth_port_num Ethernet Port number.
2113 *
2114 * OUTPUT:
2115 * Multicast and Unicast packets are rejected.
2116 *
2117 * RETURN:
2118 * None.
2119 */
2120static void eth_port_init_mac_tables(unsigned int eth_port_num)
2121{
2122 int table_index;
2123
2124 /* Clear DA filter unicast table (Ex_dFUT) */
2125 for (table_index = 0; table_index <= 0xC; table_index += 4)
Dale Farnsworthcf4086c2006-01-27 01:07:48 -07002126 mv_write(MV643XX_ETH_DA_FILTER_UNICAST_TABLE_BASE
2127 (eth_port_num) + table_index, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002128
2129 for (table_index = 0; table_index <= 0xFC; table_index += 4) {
2130 /* Clear DA filter special multicast table (Ex_dFSMT) */
Dale Farnsworth16e03012006-01-16 16:50:02 -07002131 mv_write(MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
2132 (eth_port_num) + table_index, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002133 /* Clear DA filter other multicast table (Ex_dFOMT) */
Dale Farnsworth16e03012006-01-16 16:50:02 -07002134 mv_write(MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE
2135 (eth_port_num) + table_index, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002136 }
2137}
2138
2139/*
2140 * eth_clear_mib_counters - Clear all MIB counters
2141 *
2142 * DESCRIPTION:
2143 * This function clears all MIB counters of a specific ethernet port.
2144 * A read from the MIB counter will reset the counter.
2145 *
2146 * INPUT:
2147 * unsigned int eth_port_num Ethernet Port number.
2148 *
2149 * OUTPUT:
2150 * After reading all MIB counters, the counters resets.
2151 *
2152 * RETURN:
2153 * MIB counter value.
2154 *
2155 */
2156static void eth_clear_mib_counters(unsigned int eth_port_num)
2157{
2158 int i;
2159
2160 /* Perform dummy reads from MIB counters */
2161 for (i = ETH_MIB_GOOD_OCTETS_RECEIVED_LOW; i < ETH_MIB_LATE_COLLISION;
2162 i += 4)
2163 mv_read(MV643XX_ETH_MIB_COUNTERS_BASE(eth_port_num) + i);
2164}
2165
2166static inline u32 read_mib(struct mv643xx_private *mp, int offset)
2167{
2168 return mv_read(MV643XX_ETH_MIB_COUNTERS_BASE(mp->port_num) + offset);
2169}
2170
2171static void eth_update_mib_counters(struct mv643xx_private *mp)
2172{
2173 struct mv643xx_mib_counters *p = &mp->mib_counters;
2174 int offset;
2175
2176 p->good_octets_received +=
2177 read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_LOW);
2178 p->good_octets_received +=
2179 (u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH) << 32;
2180
2181 for (offset = ETH_MIB_BAD_OCTETS_RECEIVED;
2182 offset <= ETH_MIB_FRAMES_1024_TO_MAX_OCTETS;
2183 offset += 4)
Maxime Bizon70fbf322006-10-03 10:27:10 -07002184 *(u32 *)((char *)p + offset) += read_mib(mp, offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002185
2186 p->good_octets_sent += read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_LOW);
2187 p->good_octets_sent +=
2188 (u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_HIGH) << 32;
2189
2190 for (offset = ETH_MIB_GOOD_FRAMES_SENT;
2191 offset <= ETH_MIB_LATE_COLLISION;
2192 offset += 4)
Maxime Bizon70fbf322006-10-03 10:27:10 -07002193 *(u32 *)((char *)p + offset) += read_mib(mp, offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002194}
2195
2196/*
2197 * ethernet_phy_detect - Detect whether a phy is present
2198 *
2199 * DESCRIPTION:
2200 * This function tests whether there is a PHY present on
2201 * the specified port.
2202 *
2203 * INPUT:
2204 * unsigned int eth_port_num Ethernet Port number.
2205 *
2206 * OUTPUT:
2207 * None
2208 *
2209 * RETURN:
2210 * 0 on success
2211 * -ENODEV on failure
2212 *
2213 */
2214static int ethernet_phy_detect(unsigned int port_num)
2215{
2216 unsigned int phy_reg_data0;
2217 int auto_neg;
2218
2219 eth_port_read_smi_reg(port_num, 0, &phy_reg_data0);
2220 auto_neg = phy_reg_data0 & 0x1000;
2221 phy_reg_data0 ^= 0x1000; /* invert auto_neg */
2222 eth_port_write_smi_reg(port_num, 0, phy_reg_data0);
2223
2224 eth_port_read_smi_reg(port_num, 0, &phy_reg_data0);
2225 if ((phy_reg_data0 & 0x1000) == auto_neg)
2226 return -ENODEV; /* change didn't take */
2227
2228 phy_reg_data0 ^= 0x1000;
2229 eth_port_write_smi_reg(port_num, 0, phy_reg_data0);
2230 return 0;
2231}
2232
2233/*
2234 * ethernet_phy_get - Get the ethernet port PHY address.
2235 *
2236 * DESCRIPTION:
2237 * This routine returns the given ethernet port PHY address.
2238 *
2239 * INPUT:
2240 * unsigned int eth_port_num Ethernet Port number.
2241 *
2242 * OUTPUT:
2243 * None.
2244 *
2245 * RETURN:
2246 * PHY address.
2247 *
2248 */
2249static int ethernet_phy_get(unsigned int eth_port_num)
2250{
2251 unsigned int reg_data;
2252
2253 reg_data = mv_read(MV643XX_ETH_PHY_ADDR_REG);
2254
2255 return ((reg_data >> (5 * eth_port_num)) & 0x1f);
2256}
2257
2258/*
2259 * ethernet_phy_set - Set the ethernet port PHY address.
2260 *
2261 * DESCRIPTION:
2262 * This routine sets the given ethernet port PHY address.
2263 *
2264 * INPUT:
2265 * unsigned int eth_port_num Ethernet Port number.
2266 * int phy_addr PHY address.
2267 *
2268 * OUTPUT:
2269 * None.
2270 *
2271 * RETURN:
2272 * None.
2273 *
2274 */
2275static void ethernet_phy_set(unsigned int eth_port_num, int phy_addr)
2276{
2277 u32 reg_data;
2278 int addr_shift = 5 * eth_port_num;
2279
2280 reg_data = mv_read(MV643XX_ETH_PHY_ADDR_REG);
2281 reg_data &= ~(0x1f << addr_shift);
2282 reg_data |= (phy_addr & 0x1f) << addr_shift;
2283 mv_write(MV643XX_ETH_PHY_ADDR_REG, reg_data);
2284}
2285
2286/*
2287 * ethernet_phy_reset - Reset Ethernet port PHY.
2288 *
2289 * DESCRIPTION:
2290 * This routine utilizes the SMI interface to reset the ethernet port PHY.
2291 *
2292 * INPUT:
2293 * unsigned int eth_port_num Ethernet Port number.
2294 *
2295 * OUTPUT:
2296 * The PHY is reset.
2297 *
2298 * RETURN:
2299 * None.
2300 *
2301 */
2302static void ethernet_phy_reset(unsigned int eth_port_num)
2303{
2304 unsigned int phy_reg_data;
2305
2306 /* Reset the PHY */
2307 eth_port_read_smi_reg(eth_port_num, 0, &phy_reg_data);
2308 phy_reg_data |= 0x8000; /* Set bit 15 to reset the PHY */
2309 eth_port_write_smi_reg(eth_port_num, 0, phy_reg_data);
James Chapmand0412d92006-01-27 01:15:30 -07002310
2311 /* wait for PHY to come out of reset */
2312 do {
2313 udelay(1);
2314 eth_port_read_smi_reg(eth_port_num, 0, &phy_reg_data);
2315 } while (phy_reg_data & 0x8000);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002316}
2317
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002318static void mv643xx_eth_port_enable_tx(unsigned int port_num,
Dale Farnsworth12a87c62006-03-03 10:00:22 -07002319 unsigned int queues)
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002320{
Dale Farnsworth12a87c62006-03-03 10:00:22 -07002321 mv_write(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num), queues);
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002322}
2323
2324static void mv643xx_eth_port_enable_rx(unsigned int port_num,
Dale Farnsworth12a87c62006-03-03 10:00:22 -07002325 unsigned int queues)
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002326{
Dale Farnsworth12a87c62006-03-03 10:00:22 -07002327 mv_write(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num), queues);
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002328}
2329
2330static unsigned int mv643xx_eth_port_disable_tx(unsigned int port_num)
2331{
Dale Farnsworth12a87c62006-03-03 10:00:22 -07002332 u32 queues;
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002333
2334 /* Stop Tx port activity. Check port Tx activity. */
Dale Farnsworth12a87c62006-03-03 10:00:22 -07002335 queues = mv_read(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num))
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002336 & 0xFF;
Dale Farnsworth12a87c62006-03-03 10:00:22 -07002337 if (queues) {
2338 /* Issue stop command for active queues only */
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002339 mv_write(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num),
Dale Farnsworth12a87c62006-03-03 10:00:22 -07002340 (queues << 8));
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002341
2342 /* Wait for all Tx activity to terminate. */
2343 /* Check port cause register that all Tx queues are stopped */
2344 while (mv_read(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num))
2345 & 0xFF)
2346 udelay(PHY_WAIT_MICRO_SECONDS);
2347
2348 /* Wait for Tx FIFO to empty */
2349 while (mv_read(MV643XX_ETH_PORT_STATUS_REG(port_num)) &
2350 ETH_PORT_TX_FIFO_EMPTY)
2351 udelay(PHY_WAIT_MICRO_SECONDS);
2352 }
2353
Dale Farnsworth12a87c62006-03-03 10:00:22 -07002354 return queues;
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002355}
2356
2357static unsigned int mv643xx_eth_port_disable_rx(unsigned int port_num)
2358{
Dale Farnsworth12a87c62006-03-03 10:00:22 -07002359 u32 queues;
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002360
2361 /* Stop Rx port activity. Check port Rx activity. */
Dale Farnsworth12a87c62006-03-03 10:00:22 -07002362 queues = mv_read(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num))
Dale Farnsworthe38fd1a2006-03-03 09:59:28 -07002363 & 0xFF;
Dale Farnsworth12a87c62006-03-03 10:00:22 -07002364 if (queues) {
2365 /* Issue stop command for active queues only */
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002366 mv_write(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num),
Dale Farnsworth12a87c62006-03-03 10:00:22 -07002367 (queues << 8));
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002368
2369 /* Wait for all Rx activity to terminate. */
2370 /* Check port cause register that all Rx queues are stopped */
2371 while (mv_read(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num))
2372 & 0xFF)
2373 udelay(PHY_WAIT_MICRO_SECONDS);
2374 }
2375
Dale Farnsworth12a87c62006-03-03 10:00:22 -07002376 return queues;
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002377}
2378
Linus Torvalds1da177e2005-04-16 15:20:36 -07002379/*
2380 * eth_port_reset - Reset Ethernet port
2381 *
2382 * DESCRIPTION:
2383 * This routine resets the chip by aborting any SDMA engine activity and
2384 * clearing the MIB counters. The Receiver and the Transmit unit are in
2385 * idle state after this command is performed and the port is disabled.
2386 *
2387 * INPUT:
2388 * unsigned int eth_port_num Ethernet Port number.
2389 *
2390 * OUTPUT:
2391 * Channel activity is halted.
2392 *
2393 * RETURN:
2394 * None.
2395 *
2396 */
2397static void eth_port_reset(unsigned int port_num)
2398{
2399 unsigned int reg_data;
2400
Dale Farnsworth9f8dd312006-01-27 01:10:47 -07002401 mv643xx_eth_port_disable_tx(port_num);
2402 mv643xx_eth_port_disable_rx(port_num);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002403
2404 /* Clear all MIB counters */
2405 eth_clear_mib_counters(port_num);
2406
2407 /* Reset the Enable bit in the Configuration Register */
2408 reg_data = mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num));
James Chapmand0412d92006-01-27 01:15:30 -07002409 reg_data &= ~(MV643XX_ETH_SERIAL_PORT_ENABLE |
2410 MV643XX_ETH_DO_NOT_FORCE_LINK_FAIL |
2411 MV643XX_ETH_FORCE_LINK_PASS);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002412 mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), reg_data);
2413}
2414
Linus Torvalds1da177e2005-04-16 15:20:36 -07002415
Linus Torvalds1da177e2005-04-16 15:20:36 -07002416/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002417 * eth_port_read_smi_reg - Read PHY registers
2418 *
2419 * DESCRIPTION:
2420 * This routine utilize the SMI interface to interact with the PHY in
2421 * order to perform PHY register read.
2422 *
2423 * INPUT:
2424 * unsigned int port_num Ethernet Port number.
2425 * unsigned int phy_reg PHY register address offset.
2426 * unsigned int *value Register value buffer.
2427 *
2428 * OUTPUT:
2429 * Write the value of a specified PHY register into given buffer.
2430 *
2431 * RETURN:
2432 * false if the PHY is busy or read data is not in valid state.
2433 * true otherwise.
2434 *
2435 */
2436static void eth_port_read_smi_reg(unsigned int port_num,
2437 unsigned int phy_reg, unsigned int *value)
2438{
2439 int phy_addr = ethernet_phy_get(port_num);
2440 unsigned long flags;
2441 int i;
2442
2443 /* the SMI register is a shared resource */
2444 spin_lock_irqsave(&mv643xx_eth_phy_lock, flags);
2445
2446 /* wait for the SMI register to become available */
2447 for (i = 0; mv_read(MV643XX_ETH_SMI_REG) & ETH_SMI_BUSY; i++) {
2448 if (i == PHY_WAIT_ITERATIONS) {
2449 printk("mv643xx PHY busy timeout, port %d\n", port_num);
2450 goto out;
2451 }
2452 udelay(PHY_WAIT_MICRO_SECONDS);
2453 }
2454
2455 mv_write(MV643XX_ETH_SMI_REG,
2456 (phy_addr << 16) | (phy_reg << 21) | ETH_SMI_OPCODE_READ);
2457
2458 /* now wait for the data to be valid */
2459 for (i = 0; !(mv_read(MV643XX_ETH_SMI_REG) & ETH_SMI_READ_VALID); i++) {
2460 if (i == PHY_WAIT_ITERATIONS) {
2461 printk("mv643xx PHY read timeout, port %d\n", port_num);
2462 goto out;
2463 }
2464 udelay(PHY_WAIT_MICRO_SECONDS);
2465 }
2466
2467 *value = mv_read(MV643XX_ETH_SMI_REG) & 0xffff;
2468out:
2469 spin_unlock_irqrestore(&mv643xx_eth_phy_lock, flags);
2470}
2471
2472/*
2473 * eth_port_write_smi_reg - Write to PHY registers
2474 *
2475 * DESCRIPTION:
2476 * This routine utilize the SMI interface to interact with the PHY in
2477 * order to perform writes to PHY registers.
2478 *
2479 * INPUT:
2480 * unsigned int eth_port_num Ethernet Port number.
2481 * unsigned int phy_reg PHY register address offset.
2482 * unsigned int value Register value.
2483 *
2484 * OUTPUT:
2485 * Write the given value to the specified PHY register.
2486 *
2487 * RETURN:
2488 * false if the PHY is busy.
2489 * true otherwise.
2490 *
2491 */
2492static void eth_port_write_smi_reg(unsigned int eth_port_num,
2493 unsigned int phy_reg, unsigned int value)
2494{
2495 int phy_addr;
2496 int i;
2497 unsigned long flags;
2498
2499 phy_addr = ethernet_phy_get(eth_port_num);
2500
2501 /* the SMI register is a shared resource */
2502 spin_lock_irqsave(&mv643xx_eth_phy_lock, flags);
2503
2504 /* wait for the SMI register to become available */
2505 for (i = 0; mv_read(MV643XX_ETH_SMI_REG) & ETH_SMI_BUSY; i++) {
2506 if (i == PHY_WAIT_ITERATIONS) {
2507 printk("mv643xx PHY busy timeout, port %d\n",
2508 eth_port_num);
2509 goto out;
2510 }
2511 udelay(PHY_WAIT_MICRO_SECONDS);
2512 }
2513
2514 mv_write(MV643XX_ETH_SMI_REG, (phy_addr << 16) | (phy_reg << 21) |
2515 ETH_SMI_OPCODE_WRITE | (value & 0xffff));
2516out:
2517 spin_unlock_irqrestore(&mv643xx_eth_phy_lock, flags);
2518}
2519
2520/*
James Chapmanc28a4f82006-01-27 01:13:15 -07002521 * Wrappers for MII support library.
2522 */
2523static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location)
2524{
2525 int val;
2526 struct mv643xx_private *mp = netdev_priv(dev);
2527
2528 eth_port_read_smi_reg(mp->port_num, location, &val);
2529 return val;
2530}
2531
2532static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val)
2533{
2534 struct mv643xx_private *mp = netdev_priv(dev);
2535 eth_port_write_smi_reg(mp->port_num, location, val);
2536}
2537
2538/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002539 * eth_port_receive - Get received information from Rx ring.
2540 *
2541 * DESCRIPTION:
2542 * This routine returns the received data to the caller. There is no
2543 * data copying during routine operation. All information is returned
2544 * using pointer to packet information struct passed from the caller.
2545 * If the routine exhausts Rx ring resources then the resource error flag
2546 * is set.
2547 *
2548 * INPUT:
2549 * struct mv643xx_private *mp Ethernet Port Control srtuct.
2550 * struct pkt_info *p_pkt_info User packet buffer.
2551 *
2552 * OUTPUT:
2553 * Rx ring current and used indexes are updated.
2554 *
2555 * RETURN:
2556 * ETH_ERROR in case the routine can not access Rx desc ring.
2557 * ETH_QUEUE_FULL if Rx ring resources are exhausted.
2558 * ETH_END_OF_JOB if there is no received data.
2559 * ETH_OK otherwise.
2560 */
2561static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp,
2562 struct pkt_info *p_pkt_info)
2563{
2564 int rx_next_curr_desc, rx_curr_desc, rx_used_desc;
2565 volatile struct eth_rx_desc *p_rx_desc;
2566 unsigned int command_status;
Dale Farnsworth8f518702006-01-16 16:56:30 -07002567 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002568
2569 /* Do not process Rx ring in case of Rx ring resource error */
2570 if (mp->rx_resource_err)
2571 return ETH_QUEUE_FULL;
2572
Dale Farnsworth8f518702006-01-16 16:56:30 -07002573 spin_lock_irqsave(&mp->lock, flags);
2574
Linus Torvalds1da177e2005-04-16 15:20:36 -07002575 /* Get the Rx Desc ring 'curr and 'used' indexes */
2576 rx_curr_desc = mp->rx_curr_desc_q;
2577 rx_used_desc = mp->rx_used_desc_q;
2578
2579 p_rx_desc = &mp->p_rx_desc_area[rx_curr_desc];
2580
2581 /* The following parameters are used to save readings from memory */
2582 command_status = p_rx_desc->cmd_sts;
2583 rmb();
2584
2585 /* Nothing to receive... */
Dale Farnsworth8f518702006-01-16 16:56:30 -07002586 if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) {
2587 spin_unlock_irqrestore(&mp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002588 return ETH_END_OF_JOB;
Dale Farnsworth8f518702006-01-16 16:56:30 -07002589 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002590
2591 p_pkt_info->byte_cnt = (p_rx_desc->byte_cnt) - RX_BUF_OFFSET;
2592 p_pkt_info->cmd_sts = command_status;
2593 p_pkt_info->buf_ptr = (p_rx_desc->buf_ptr) + RX_BUF_OFFSET;
2594 p_pkt_info->return_info = mp->rx_skb[rx_curr_desc];
2595 p_pkt_info->l4i_chk = p_rx_desc->buf_size;
2596
Dale Farnsworthb4de9052006-01-27 01:04:43 -07002597 /*
2598 * Clean the return info field to indicate that the
2599 * packet has been moved to the upper layers
2600 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002601 mp->rx_skb[rx_curr_desc] = NULL;
2602
2603 /* Update current index in data structure */
2604 rx_next_curr_desc = (rx_curr_desc + 1) % mp->rx_ring_size;
2605 mp->rx_curr_desc_q = rx_next_curr_desc;
2606
2607 /* Rx descriptors exhausted. Set the Rx ring resource error flag */
2608 if (rx_next_curr_desc == rx_used_desc)
2609 mp->rx_resource_err = 1;
2610
Dale Farnsworth8f518702006-01-16 16:56:30 -07002611 spin_unlock_irqrestore(&mp->lock, flags);
2612
Linus Torvalds1da177e2005-04-16 15:20:36 -07002613 return ETH_OK;
2614}
2615
2616/*
2617 * eth_rx_return_buff - Returns a Rx buffer back to the Rx ring.
2618 *
2619 * DESCRIPTION:
2620 * This routine returns a Rx buffer back to the Rx ring. It retrieves the
2621 * next 'used' descriptor and attached the returned buffer to it.
2622 * In case the Rx ring was in "resource error" condition, where there are
2623 * no available Rx resources, the function resets the resource error flag.
2624 *
2625 * INPUT:
2626 * struct mv643xx_private *mp Ethernet Port Control srtuct.
2627 * struct pkt_info *p_pkt_info Information on returned buffer.
2628 *
2629 * OUTPUT:
2630 * New available Rx resource in Rx descriptor ring.
2631 *
2632 * RETURN:
2633 * ETH_ERROR in case the routine can not access Rx desc ring.
2634 * ETH_OK otherwise.
2635 */
2636static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp,
2637 struct pkt_info *p_pkt_info)
2638{
2639 int used_rx_desc; /* Where to return Rx resource */
2640 volatile struct eth_rx_desc *p_used_rx_desc;
Dale Farnsworth8f518702006-01-16 16:56:30 -07002641 unsigned long flags;
2642
2643 spin_lock_irqsave(&mp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002644
2645 /* Get 'used' Rx descriptor */
2646 used_rx_desc = mp->rx_used_desc_q;
2647 p_used_rx_desc = &mp->p_rx_desc_area[used_rx_desc];
2648
2649 p_used_rx_desc->buf_ptr = p_pkt_info->buf_ptr;
2650 p_used_rx_desc->buf_size = p_pkt_info->byte_cnt;
2651 mp->rx_skb[used_rx_desc] = p_pkt_info->return_info;
2652
2653 /* Flush the write pipe */
2654
2655 /* Return the descriptor to DMA ownership */
2656 wmb();
2657 p_used_rx_desc->cmd_sts =
2658 ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT;
2659 wmb();
2660
2661 /* Move the used descriptor pointer to the next descriptor */
2662 mp->rx_used_desc_q = (used_rx_desc + 1) % mp->rx_ring_size;
2663
2664 /* Any Rx return cancels the Rx resource error status */
2665 mp->rx_resource_err = 0;
2666
Dale Farnsworth8f518702006-01-16 16:56:30 -07002667 spin_unlock_irqrestore(&mp->lock, flags);
2668
Linus Torvalds1da177e2005-04-16 15:20:36 -07002669 return ETH_OK;
2670}
2671
2672/************* Begin ethtool support *************************/
2673
2674struct mv643xx_stats {
2675 char stat_string[ETH_GSTRING_LEN];
2676 int sizeof_stat;
2677 int stat_offset;
2678};
2679
2680#define MV643XX_STAT(m) sizeof(((struct mv643xx_private *)0)->m), \
Dale Farnsworthb4de9052006-01-27 01:04:43 -07002681 offsetof(struct mv643xx_private, m)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002682
2683static const struct mv643xx_stats mv643xx_gstrings_stats[] = {
2684 { "rx_packets", MV643XX_STAT(stats.rx_packets) },
2685 { "tx_packets", MV643XX_STAT(stats.tx_packets) },
2686 { "rx_bytes", MV643XX_STAT(stats.rx_bytes) },
2687 { "tx_bytes", MV643XX_STAT(stats.tx_bytes) },
2688 { "rx_errors", MV643XX_STAT(stats.rx_errors) },
2689 { "tx_errors", MV643XX_STAT(stats.tx_errors) },
2690 { "rx_dropped", MV643XX_STAT(stats.rx_dropped) },
2691 { "tx_dropped", MV643XX_STAT(stats.tx_dropped) },
2692 { "good_octets_received", MV643XX_STAT(mib_counters.good_octets_received) },
2693 { "bad_octets_received", MV643XX_STAT(mib_counters.bad_octets_received) },
2694 { "internal_mac_transmit_err", MV643XX_STAT(mib_counters.internal_mac_transmit_err) },
2695 { "good_frames_received", MV643XX_STAT(mib_counters.good_frames_received) },
2696 { "bad_frames_received", MV643XX_STAT(mib_counters.bad_frames_received) },
2697 { "broadcast_frames_received", MV643XX_STAT(mib_counters.broadcast_frames_received) },
2698 { "multicast_frames_received", MV643XX_STAT(mib_counters.multicast_frames_received) },
2699 { "frames_64_octets", MV643XX_STAT(mib_counters.frames_64_octets) },
2700 { "frames_65_to_127_octets", MV643XX_STAT(mib_counters.frames_65_to_127_octets) },
2701 { "frames_128_to_255_octets", MV643XX_STAT(mib_counters.frames_128_to_255_octets) },
2702 { "frames_256_to_511_octets", MV643XX_STAT(mib_counters.frames_256_to_511_octets) },
2703 { "frames_512_to_1023_octets", MV643XX_STAT(mib_counters.frames_512_to_1023_octets) },
2704 { "frames_1024_to_max_octets", MV643XX_STAT(mib_counters.frames_1024_to_max_octets) },
2705 { "good_octets_sent", MV643XX_STAT(mib_counters.good_octets_sent) },
2706 { "good_frames_sent", MV643XX_STAT(mib_counters.good_frames_sent) },
2707 { "excessive_collision", MV643XX_STAT(mib_counters.excessive_collision) },
2708 { "multicast_frames_sent", MV643XX_STAT(mib_counters.multicast_frames_sent) },
2709 { "broadcast_frames_sent", MV643XX_STAT(mib_counters.broadcast_frames_sent) },
2710 { "unrec_mac_control_received", MV643XX_STAT(mib_counters.unrec_mac_control_received) },
2711 { "fc_sent", MV643XX_STAT(mib_counters.fc_sent) },
2712 { "good_fc_received", MV643XX_STAT(mib_counters.good_fc_received) },
2713 { "bad_fc_received", MV643XX_STAT(mib_counters.bad_fc_received) },
2714 { "undersize_received", MV643XX_STAT(mib_counters.undersize_received) },
2715 { "fragments_received", MV643XX_STAT(mib_counters.fragments_received) },
2716 { "oversize_received", MV643XX_STAT(mib_counters.oversize_received) },
2717 { "jabber_received", MV643XX_STAT(mib_counters.jabber_received) },
2718 { "mac_receive_error", MV643XX_STAT(mib_counters.mac_receive_error) },
2719 { "bad_crc_event", MV643XX_STAT(mib_counters.bad_crc_event) },
2720 { "collision", MV643XX_STAT(mib_counters.collision) },
2721 { "late_collision", MV643XX_STAT(mib_counters.late_collision) },
2722};
2723
2724#define MV643XX_STATS_LEN \
2725 sizeof(mv643xx_gstrings_stats) / sizeof(struct mv643xx_stats)
2726
Dale Farnsworthb4de9052006-01-27 01:04:43 -07002727static void mv643xx_get_drvinfo(struct net_device *netdev,
2728 struct ethtool_drvinfo *drvinfo)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002729{
2730 strncpy(drvinfo->driver, mv643xx_driver_name, 32);
2731 strncpy(drvinfo->version, mv643xx_driver_version, 32);
2732 strncpy(drvinfo->fw_version, "N/A", 32);
2733 strncpy(drvinfo->bus_info, "mv643xx", 32);
2734 drvinfo->n_stats = MV643XX_STATS_LEN;
2735}
2736
Dale Farnsworthb4de9052006-01-27 01:04:43 -07002737static int mv643xx_get_stats_count(struct net_device *netdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002738{
2739 return MV643XX_STATS_LEN;
2740}
2741
Dale Farnsworthb4de9052006-01-27 01:04:43 -07002742static void mv643xx_get_ethtool_stats(struct net_device *netdev,
2743 struct ethtool_stats *stats, uint64_t *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002744{
2745 struct mv643xx_private *mp = netdev->priv;
2746 int i;
2747
2748 eth_update_mib_counters(mp);
2749
Dale Farnsworthb4de9052006-01-27 01:04:43 -07002750 for (i = 0; i < MV643XX_STATS_LEN; i++) {
Jeff Garzik6aa20a22006-09-13 13:24:59 -04002751 char *p = (char *)mp+mv643xx_gstrings_stats[i].stat_offset;
Dale Farnsworthb4de9052006-01-27 01:04:43 -07002752 data[i] = (mv643xx_gstrings_stats[i].sizeof_stat ==
Linus Torvalds1da177e2005-04-16 15:20:36 -07002753 sizeof(uint64_t)) ? *(uint64_t *)p : *(uint32_t *)p;
2754 }
2755}
2756
Dale Farnsworthb4de9052006-01-27 01:04:43 -07002757static void mv643xx_get_strings(struct net_device *netdev, uint32_t stringset,
2758 uint8_t *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002759{
2760 int i;
2761
2762 switch(stringset) {
2763 case ETH_SS_STATS:
2764 for (i=0; i < MV643XX_STATS_LEN; i++) {
Dale Farnsworthb4de9052006-01-27 01:04:43 -07002765 memcpy(data + i * ETH_GSTRING_LEN,
2766 mv643xx_gstrings_stats[i].stat_string,
2767 ETH_GSTRING_LEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002768 }
2769 break;
2770 }
2771}
2772
James Chapmand0412d92006-01-27 01:15:30 -07002773static u32 mv643xx_eth_get_link(struct net_device *dev)
2774{
2775 struct mv643xx_private *mp = netdev_priv(dev);
2776
2777 return mii_link_ok(&mp->mii);
2778}
2779
2780static int mv643xx_eth_nway_restart(struct net_device *dev)
2781{
2782 struct mv643xx_private *mp = netdev_priv(dev);
2783
2784 return mii_nway_restart(&mp->mii);
2785}
2786
2787static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2788{
2789 struct mv643xx_private *mp = netdev_priv(dev);
2790
2791 return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL);
2792}
2793
Jeff Garzik7282d492006-09-13 14:30:00 -04002794static const struct ethtool_ops mv643xx_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002795 .get_settings = mv643xx_get_settings,
James Chapmand0412d92006-01-27 01:15:30 -07002796 .set_settings = mv643xx_set_settings,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002797 .get_drvinfo = mv643xx_get_drvinfo,
James Chapmand0412d92006-01-27 01:15:30 -07002798 .get_link = mv643xx_eth_get_link,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002799 .get_sg = ethtool_op_get_sg,
2800 .set_sg = ethtool_op_set_sg,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002801 .get_stats_count = mv643xx_get_stats_count,
2802 .get_ethtool_stats = mv643xx_get_ethtool_stats,
James Chapmand0412d92006-01-27 01:15:30 -07002803 .get_strings = mv643xx_get_strings,
2804 .get_stats_count = mv643xx_get_stats_count,
2805 .get_ethtool_stats = mv643xx_get_ethtool_stats,
2806 .nway_reset = mv643xx_eth_nway_restart,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002807};
2808
2809/************* End ethtool support *************************/