Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 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 Hering | 3bb8a18a | 2006-01-05 22:45:45 -0800 | [diff] [blame] | 9 | * written by Manish Lachwani |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * |
| 11 | * Copyright (C) 2003 Ralf Baechle <ralf@linux-mips.org> |
| 12 | * |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 13 | * Copyright (C) 2004-2006 MontaVista Software, Inc. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | * 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 Viro | b6298c2 | 2006-01-18 19:35:54 -0500 | [diff] [blame] | 35 | #include <linux/in.h> |
| 36 | #include <linux/ip.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #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 King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 44 | #include <linux/platform_device.h> |
| 45 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | /* Static function declarations */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | static void eth_port_uc_addr_get(struct net_device *dev, |
| 55 | unsigned char *MacAddr); |
Dale Farnsworth | 16e0301 | 2006-01-16 16:50:02 -0700 | [diff] [blame] | 56 | static void eth_port_set_multicast_list(struct net_device *); |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 57 | static void mv643xx_eth_port_enable_tx(unsigned int port_num, |
Dale Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 58 | unsigned int queues); |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 59 | static void mv643xx_eth_port_enable_rx(unsigned int port_num, |
Dale Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 60 | unsigned int queues); |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 61 | static unsigned int mv643xx_eth_port_disable_tx(unsigned int port_num); |
| 62 | static unsigned int mv643xx_eth_port_disable_rx(unsigned int port_num); |
Dale Farnsworth | ab4384a | 2006-01-16 16:59:21 -0700 | [diff] [blame] | 63 | static int mv643xx_eth_open(struct net_device *); |
| 64 | static int mv643xx_eth_stop(struct net_device *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | static int mv643xx_eth_change_mtu(struct net_device *, int); |
| 66 | static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *); |
| 67 | static void eth_port_init_mac_tables(unsigned int eth_port_num); |
| 68 | #ifdef MV643XX_NAPI |
| 69 | static int mv643xx_poll(struct net_device *dev, int *budget); |
| 70 | #endif |
James Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 71 | static int ethernet_phy_get(unsigned int eth_port_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | static void ethernet_phy_set(unsigned int eth_port_num, int phy_addr); |
| 73 | static int ethernet_phy_detect(unsigned int eth_port_num); |
James Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 74 | static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location); |
| 75 | static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val); |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 76 | static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd); |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 77 | static const struct ethtool_ops mv643xx_ethtool_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
| 79 | static char mv643xx_driver_name[] = "mv643xx_eth"; |
| 80 | static char mv643xx_driver_version[] = "1.0"; |
| 81 | |
| 82 | static void __iomem *mv643xx_eth_shared_base; |
| 83 | |
| 84 | /* used to protect MV643XX_ETH_SMI_REG, which is shared across ports */ |
Ingo Molnar | a9f6a0d | 2005-09-09 13:10:41 -0700 | [diff] [blame] | 85 | static DEFINE_SPINLOCK(mv643xx_eth_phy_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | static inline u32 mv_read(int offset) |
| 88 | { |
Al Viro | dc074a8 | 2005-04-25 07:55:58 -0700 | [diff] [blame] | 89 | void __iomem *reg_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | |
| 91 | reg_base = mv643xx_eth_shared_base - MV643XX_ETH_SHARED_REGS; |
| 92 | |
| 93 | return readl(reg_base + offset); |
| 94 | } |
| 95 | |
| 96 | static inline void mv_write(int offset, u32 data) |
| 97 | { |
Al Viro | dc074a8 | 2005-04-25 07:55:58 -0700 | [diff] [blame] | 98 | void __iomem *reg_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | |
| 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 | */ |
| 111 | static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu) |
| 112 | { |
Dale Farnsworth | 8f51870 | 2006-01-16 16:56:30 -0700 | [diff] [blame] | 113 | if ((new_mtu > 9500) || (new_mtu < 64)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | |
| 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 Farnsworth | ab4384a | 2006-01-16 16:59:21 -0700 | [diff] [blame] | 124 | mv643xx_eth_stop(dev); |
| 125 | if (mv643xx_eth_open(dev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | printk(KERN_ERR |
| 127 | "%s: Fatal error on opening device\n", |
| 128 | dev->name); |
| 129 | } |
| 130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | return 0; |
| 132 | } |
| 133 | |
| 134 | /* |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 135 | * mv643xx_eth_rx_refill_descs |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | * |
| 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 Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 142 | static void mv643xx_eth_rx_refill_descs(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | struct mv643xx_private *mp = netdev_priv(dev); |
| 145 | struct pkt_info pkt_info; |
| 146 | struct sk_buff *skb; |
Dale Farnsworth | b44cd57 | 2006-01-16 16:51:22 -0700 | [diff] [blame] | 147 | int unaligned; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 149 | while (mp->rx_desc_count < mp->rx_ring_size) { |
Ralf Baechle | 908b637 | 2007-02-26 19:52:06 +0000 | [diff] [blame] | 150 | skb = dev_alloc_skb(ETH_RX_SKB_SIZE + dma_get_cache_alignment()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | if (!skb) |
| 152 | break; |
Dale Farnsworth | f98e36f1 | 2006-01-27 01:09:18 -0700 | [diff] [blame] | 153 | mp->rx_desc_count++; |
Ralf Baechle | 908b637 | 2007-02-26 19:52:06 +0000 | [diff] [blame] | 154 | unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1); |
Dale Farnsworth | b44cd57 | 2006-01-16 16:51:22 -0700 | [diff] [blame] | 155 | if (unaligned) |
Ralf Baechle | 908b637 | 2007-02-26 19:52:06 +0000 | [diff] [blame] | 156 | skb_reserve(skb, dma_get_cache_alignment() - unaligned); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | pkt_info.cmd_sts = ETH_RX_ENABLE_INTERRUPT; |
Dale Farnsworth | 7303fde | 2006-03-03 10:03:36 -0700 | [diff] [blame] | 158 | 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | 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 Farnsworth | 7303fde | 2006-03-03 10:03:36 -0700 | [diff] [blame] | 167 | skb_reserve(skb, ETH_HW_IP_ALIGN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | /* |
| 170 | * If RX ring is empty of SKB, set a timer to try allocating |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 171 | * again at a later time. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | */ |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 173 | if (mp->rx_desc_count == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | printk(KERN_INFO "%s: Rx ring is empty\n", dev->name); |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 175 | mp->timeout.expires = jiffies + (HZ / 10); /* 100 mSec */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | add_timer(&mp->timeout); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | } |
| 179 | |
| 180 | /* |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 181 | * mv643xx_eth_rx_refill_descs_timer_wrapper |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | * |
| 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 Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 190 | static inline void mv643xx_eth_rx_refill_descs_timer_wrapper(unsigned long data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | { |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 192 | mv643xx_eth_rx_refill_descs((struct net_device *)data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | } |
| 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 | */ |
| 203 | static 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 Farnsworth | ed9b5d4 | 2006-01-27 01:06:38 -0700 | [diff] [blame] | 209 | eth_port_uc_addr_set(port_num, dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | } |
| 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 | */ |
| 220 | static void mv643xx_eth_set_rx_mode(struct net_device *dev) |
| 221 | { |
| 222 | struct mv643xx_private *mp = netdev_priv(dev); |
Dale Farnsworth | 0199987 | 2006-01-27 01:18:01 -0700 | [diff] [blame] | 223 | u32 config_reg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | |
Dale Farnsworth | 0199987 | 2006-01-27 01:18:01 -0700 | [diff] [blame] | 225 | config_reg = mv_read(MV643XX_ETH_PORT_CONFIG_REG(mp->port_num)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | if (dev->flags & IFF_PROMISC) |
Dale Farnsworth | 0199987 | 2006-01-27 01:18:01 -0700 | [diff] [blame] | 227 | config_reg |= (u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | else |
Dale Farnsworth | 0199987 | 2006-01-27 01:18:01 -0700 | [diff] [blame] | 229 | config_reg &= ~(u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE; |
| 230 | mv_write(MV643XX_ETH_PORT_CONFIG_REG(mp->port_num), config_reg); |
Dale Farnsworth | 16e0301 | 2006-01-16 16:50:02 -0700 | [diff] [blame] | 231 | |
| 232 | eth_port_set_multicast_list(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | } |
| 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 | */ |
| 246 | static 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 | */ |
| 265 | static 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 Viro | 91c7c56 | 2006-12-06 19:50:06 +0000 | [diff] [blame] | 280 | static void mv643xx_eth_tx_timeout_task(struct work_struct *ugly) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | { |
Al Viro | 91c7c56 | 2006-12-06 19:50:06 +0000 | [diff] [blame] | 282 | struct mv643xx_private *mp = container_of(ugly, struct mv643xx_private, |
| 283 | tx_timeout_task); |
| 284 | struct net_device *dev = mp->mii.dev; /* yuck */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | |
Dale Farnsworth | 9484356 | 2006-04-11 18:24:26 -0700 | [diff] [blame] | 286 | if (!netif_running(dev)) |
| 287 | return; |
| 288 | |
| 289 | netif_stop_queue(dev); |
| 290 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | eth_port_reset(mp->port_num); |
Dale Farnsworth | ed9b5d4 | 2006-01-27 01:06:38 -0700 | [diff] [blame] | 292 | eth_port_start(dev); |
Dale Farnsworth | 9484356 | 2006-04-11 18:24:26 -0700 | [diff] [blame] | 293 | |
| 294 | if (mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB) |
| 295 | netif_wake_queue(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | } |
| 297 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 298 | /** |
| 299 | * mv643xx_eth_free_tx_descs - Free the tx desc data for completed descriptors |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | * |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 301 | * If force is non-zero, frees uncompleted descriptors as well |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | */ |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 303 | int mv643xx_eth_free_tx_descs(struct net_device *dev, int force) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | { |
| 305 | struct mv643xx_private *mp = netdev_priv(dev); |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 306 | 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 315 | while (mp->tx_desc_count > 0) { |
| 316 | spin_lock_irqsave(&mp->lock, flags); |
Dale Farnsworth | d344bff | 2007-01-23 09:52:25 -0700 | [diff] [blame] | 317 | |
| 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 Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 324 | tx_index = mp->tx_used_desc_q; |
| 325 | desc = &mp->p_tx_desc_area[tx_index]; |
| 326 | cmd_sts = desc->cmd_sts; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 328 | 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 Farnsworth | 7303fde | 2006-03-03 10:03:36 -0700 | [diff] [blame] | 342 | if (cmd_sts & ETH_ERROR_SUMMARY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | printk("%s: Error in TX\n", dev->name); |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 344 | mp->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | } |
| 346 | |
Dale Farnsworth | d344bff | 2007-01-23 09:52:25 -0700 | [diff] [blame] | 347 | spin_unlock_irqrestore(&mp->lock, flags); |
| 348 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 349 | if (cmd_sts & ETH_TX_FIRST_DESC) |
| 350 | dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE); |
Paolo Galtieri | cb415d3 | 2006-01-16 16:48:02 -0700 | [diff] [blame] | 351 | else |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 352 | dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 354 | if (skb) |
| 355 | dev_kfree_skb_irq(skb); |
| 356 | |
| 357 | released = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | } |
| 359 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | return released; |
| 361 | } |
| 362 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 363 | static 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 | |
| 372 | static void mv643xx_eth_free_all_tx_descs(struct net_device *dev) |
| 373 | { |
| 374 | mv643xx_eth_free_tx_descs(dev, 1); |
| 375 | } |
| 376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | /* |
| 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | static int mv643xx_eth_receive_queue(struct net_device *dev, int budget) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | { |
| 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 Farnsworth | b1dd9ca | 2005-09-01 09:59:23 -0700 | [diff] [blame] | 396 | while (budget-- > 0 && eth_port_receive(mp, &pkt_info) == ETH_OK) { |
Jeff Garzik | 54caf44 | 2006-09-21 00:08:10 -0400 | [diff] [blame] | 397 | dma_unmap_single(NULL, pkt_info.buf_ptr, ETH_RX_SKB_SIZE, |
Dale Farnsworth | 71d2872 | 2006-09-13 09:21:08 -0700 | [diff] [blame] | 398 | DMA_FROM_DEVICE); |
Dale Farnsworth | f98e36f1 | 2006-01-27 01:09:18 -0700 | [diff] [blame] | 399 | mp->rx_desc_count--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | received_packets++; |
Dale Farnsworth | b1dd9ca | 2005-09-01 09:59:23 -0700 | [diff] [blame] | 401 | |
Dale Farnsworth | 468d09f | 2006-03-03 10:04:39 -0700 | [diff] [blame] | 402 | /* |
| 403 | * Update statistics. |
| 404 | * Note byte count includes 4 byte CRC count |
| 405 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | |
| 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 Galtieri | 12ad74f | 2006-01-27 01:03:38 -0700 | [diff] [blame] | 450 | dev->last_rx = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | } |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 452 | mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | |
| 454 | return received_packets; |
| 455 | } |
| 456 | |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 457 | /* Set the mv643xx port configuration register for the speed/duplex mode. */ |
| 458 | static 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 Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 464 | unsigned int queues; |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 465 | |
| 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 Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 492 | queues = mv643xx_eth_port_disable_tx(port_num); |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 493 | |
| 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 Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 501 | if (queues) |
| 502 | mv643xx_eth_port_enable_tx(port_num, queues); |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 503 | } |
| 504 | } |
| 505 | } |
| 506 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | /* |
| 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 Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 518 | static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | { |
| 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 Farnsworth | 7303fde | 2006-03-03 10:03:36 -0700 | [diff] [blame] | 527 | ETH_INT_UNMASK_ALL; |
Dale Farnsworth | 468d09f | 2006-03-03 10:04:39 -0700 | [diff] [blame] | 528 | if (eth_int_cause & ETH_INT_CAUSE_EXT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | eth_int_cause_ext = mv_read( |
| 530 | MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num)) & |
Dale Farnsworth | 7303fde | 2006-03-03 10:03:36 -0700 | [diff] [blame] | 531 | ETH_INT_UNMASK_ALL_EXT; |
Dale Farnsworth | 468d09f | 2006-03-03 10:04:39 -0700 | [diff] [blame] | 532 | mv_write(MV643XX_ETH_INTERRUPT_CAUSE_EXTEND_REG(port_num), |
| 533 | ~eth_int_cause_ext); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | } |
Dale Farnsworth | 7303fde | 2006-03-03 10:03:36 -0700 | [diff] [blame] | 535 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | /* PHY status changed */ |
Dale Farnsworth | 468d09f | 2006-03-03 10:04:39 -0700 | [diff] [blame] | 537 | if (eth_int_cause_ext & ETH_INT_CAUSE_PHY) { |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 538 | struct ethtool_cmd cmd; |
| 539 | |
James Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 540 | if (mii_link_ok(&mp->mii)) { |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 541 | mii_ethtool_gset(&mp->mii, &cmd); |
| 542 | mv643xx_eth_update_pscr(dev, &cmd); |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 543 | mv643xx_eth_port_enable_tx(port_num, |
| 544 | ETH_TX_QUEUES_ENABLED); |
James Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 545 | if (!netif_carrier_ok(dev)) { |
| 546 | netif_carrier_on(dev); |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 547 | if (mp->tx_ring_size - mp->tx_desc_count >= |
| 548 | MAX_DESCS_PER_SKB) |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 549 | netif_wake_queue(dev); |
James Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 550 | } |
| 551 | } else if (netif_carrier_ok(dev)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | netif_stop_queue(dev); |
James Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 553 | netif_carrier_off(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | } |
| 555 | } |
| 556 | |
Dale Farnsworth | 468d09f | 2006-03-03 10:04:39 -0700 | [diff] [blame] | 557 | #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 Cook | 5c53740 | 2006-04-11 18:23:15 -0700 | [diff] [blame] | 570 | #endif |
Dale Farnsworth | 468d09f | 2006-03-03 10:04:39 -0700 | [diff] [blame] | 571 | if (eth_int_cause_ext & ETH_INT_CAUSE_TX) |
| 572 | mv643xx_eth_free_completed_tx_descs(dev); |
Dale Farnsworth | 468d09f | 2006-03-03 10:04:39 -0700 | [diff] [blame] | 573 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | /* |
| 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 | */ |
| 609 | static 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 | */ |
| 647 | static 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | * 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 | */ |
| 680 | static 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | } |
| 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 | */ |
| 722 | static 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | |
| 738 | mp->tx_desc_area_size = tx_desc_num * sizeof(struct eth_tx_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | } |
| 740 | |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 741 | static 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 | |
| 753 | static 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 Farnsworth | ab4384a | 2006-01-16 16:59:21 -0700 | [diff] [blame] | 769 | /* |
| 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 | |
| 782 | static int mv643xx_eth_open(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | { |
| 784 | struct mv643xx_private *mp = netdev_priv(dev); |
| 785 | unsigned int port_num = mp->port_num; |
| 786 | unsigned int size; |
Dale Farnsworth | ab4384a | 2006-01-16 16:59:21 -0700 | [diff] [blame] | 787 | int err; |
| 788 | |
Dale Farnsworth | 85cf572 | 2007-03-07 22:21:23 -0700 | [diff] [blame] | 789 | /* 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 Farnsworth | ab4384a | 2006-01-16 16:59:21 -0700 | [diff] [blame] | 795 | err = request_irq(dev->irq, mv643xx_eth_int_handler, |
Thomas Gleixner | 1fb9df5 | 2006-07-01 19:29:39 -0700 | [diff] [blame] | 796 | IRQF_SHARED | IRQF_SAMPLE_RANDOM, dev->name, dev); |
Dale Farnsworth | ab4384a | 2006-01-16 16:59:21 -0700 | [diff] [blame] | 797 | if (err) { |
| 798 | printk(KERN_ERR "Can not assign IRQ number to MV643XX_eth%d\n", |
| 799 | port_num); |
| 800 | return -EAGAIN; |
| 801 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | eth_port_init(mp); |
| 804 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | memset(&mp->timeout, 0, sizeof(struct timer_list)); |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 806 | mp->timeout.function = mv643xx_eth_rx_refill_descs_timer_wrapper; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | mp->timeout.data = (unsigned long)dev; |
| 808 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | /* 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 Farnsworth | ab4384a | 2006-01-16 16:59:21 -0700 | [diff] [blame] | 814 | err = -ENOMEM; |
| 815 | goto out_free_irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | } |
| 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 Farnsworth | ab4384a | 2006-01-16 16:59:21 -0700 | [diff] [blame] | 821 | err = -ENOMEM; |
| 822 | goto out_free_rx_skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | } |
| 824 | |
| 825 | /* Allocate TX ring */ |
Dale Farnsworth | f98e36f1 | 2006-01-27 01:09:18 -0700 | [diff] [blame] | 826 | mp->tx_desc_count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | 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 Farnsworth | ab4384a | 2006-01-16 16:59:21 -0700 | [diff] [blame] | 842 | err = -ENOMEM; |
| 843 | goto out_free_tx_skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | } |
| 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 Farnsworth | f98e36f1 | 2006-01-27 01:09:18 -0700 | [diff] [blame] | 851 | mp->rx_desc_count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | 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 Farnsworth | dd09b1d | 2006-01-16 16:53:15 -0700 | [diff] [blame] | 870 | iounmap(mp->p_tx_desc_area); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | else |
| 872 | dma_free_coherent(NULL, mp->tx_desc_area_size, |
| 873 | mp->p_tx_desc_area, mp->tx_desc_dma); |
Dale Farnsworth | ab4384a | 2006-01-16 16:59:21 -0700 | [diff] [blame] | 874 | err = -ENOMEM; |
| 875 | goto out_free_tx_skb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | } |
| 877 | memset((void *)mp->p_rx_desc_area, 0, size); |
| 878 | |
| 879 | ether_init_rx_desc_ring(mp); |
| 880 | |
Dale Farnsworth | f78fb47 | 2006-03-03 10:05:26 -0700 | [diff] [blame] | 881 | mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | |
Dale Farnsworth | ed9b5d4 | 2006-01-27 01:06:38 -0700 | [diff] [blame] | 883 | eth_port_start(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | |
| 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 Farnsworth | 8f51870 | 2006-01-16 16:56:30 -0700 | [diff] [blame] | 895 | /* Unmask phy and link status changes interrupts */ |
| 896 | mv_write(MV643XX_ETH_INTERRUPT_EXTEND_MASK_REG(port_num), |
Dale Farnsworth | 7303fde | 2006-03-03 10:03:36 -0700 | [diff] [blame] | 897 | ETH_INT_UNMASK_ALL_EXT); |
Dale Farnsworth | 8f51870 | 2006-01-16 16:56:30 -0700 | [diff] [blame] | 898 | |
| 899 | /* Unmask RX buffer and TX end interrupt */ |
Dale Farnsworth | 7303fde | 2006-03-03 10:03:36 -0700 | [diff] [blame] | 900 | mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL); |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 901 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | return 0; |
Dale Farnsworth | ab4384a | 2006-01-16 16:59:21 -0700 | [diff] [blame] | 903 | |
| 904 | out_free_tx_skb: |
| 905 | kfree(mp->tx_skb); |
| 906 | out_free_rx_skb: |
| 907 | kfree(mp->rx_skb); |
| 908 | out_free_irq: |
| 909 | free_irq(dev->irq, dev); |
| 910 | |
| 911 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | } |
| 913 | |
| 914 | static void mv643xx_eth_free_tx_rings(struct net_device *dev) |
| 915 | { |
| 916 | struct mv643xx_private *mp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | |
| 918 | /* Stop Tx Queues */ |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 919 | mv643xx_eth_port_disable_tx(mp->port_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 921 | /* 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | |
| 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 | |
| 934 | static 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 Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 941 | mv643xx_eth_port_disable_rx(port_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | |
| 943 | /* Free preallocated skb's on RX rings */ |
Dale Farnsworth | f98e36f1 | 2006-01-27 01:09:18 -0700 | [diff] [blame] | 944 | for (curr = 0; mp->rx_desc_count && curr < mp->rx_ring_size; curr++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | if (mp->rx_skb[curr]) { |
| 946 | dev_kfree_skb(mp->rx_skb[curr]); |
Dale Farnsworth | f98e36f1 | 2006-01-27 01:09:18 -0700 | [diff] [blame] | 947 | mp->rx_desc_count--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | } |
| 949 | } |
| 950 | |
Dale Farnsworth | f98e36f1 | 2006-01-27 01:09:18 -0700 | [diff] [blame] | 951 | if (mp->rx_desc_count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | 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 Farnsworth | f98e36f1 | 2006-01-27 01:09:18 -0700 | [diff] [blame] | 955 | mp->rx_desc_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | /* 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 Farnsworth | ab4384a | 2006-01-16 16:59:21 -0700 | [diff] [blame] | 974 | static int mv643xx_eth_stop(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | { |
| 976 | struct mv643xx_private *mp = netdev_priv(dev); |
| 977 | unsigned int port_num = mp->port_num; |
| 978 | |
Dale Farnsworth | c2e5b35 | 2006-01-16 17:00:24 -0700 | [diff] [blame] | 979 | /* Mask all interrupts on ethernet port */ |
Dale Farnsworth | 7303fde | 2006-03-03 10:03:36 -0700 | [diff] [blame] | 980 | mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL); |
Dale Farnsworth | c2e5b35 | 2006-01-16 17:00:24 -0700 | [diff] [blame] | 981 | /* wait for previous write to complete */ |
Dale Farnsworth | 8f51870 | 2006-01-16 16:56:30 -0700 | [diff] [blame] | 982 | 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 999 | free_irq(dev->irq, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | |
| 1001 | return 0; |
| 1002 | } |
| 1003 | |
| 1004 | #ifdef MV643XX_NAPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | /* |
| 1006 | * mv643xx_poll |
| 1007 | * |
| 1008 | * This function is used in case of NAPI |
| 1009 | */ |
| 1010 | static 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | |
| 1016 | #ifdef MV643XX_TX_FAST_REFILL |
| 1017 | if (++mp->tx_clean_threshold > 5) { |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1018 | mv643xx_eth_free_completed_tx_descs(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | mp->tx_clean_threshold = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | } |
| 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | *budget -= work_done; |
| 1030 | dev->quota -= work_done; |
| 1031 | if (work_done >= orig_budget) |
| 1032 | done = 0; |
| 1033 | } |
| 1034 | |
| 1035 | if (done) { |
Dale Farnsworth | 8f51870 | 2006-01-16 16:56:30 -0700 | [diff] [blame] | 1036 | netif_rx_complete(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | 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 Farnsworth | 7303fde | 2006-03-03 10:03:36 -0700 | [diff] [blame] | 1040 | ETH_INT_UNMASK_ALL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | } |
| 1042 | |
| 1043 | return done ? 0 : 1; |
| 1044 | } |
| 1045 | #endif |
| 1046 | |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1047 | /** |
| 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 Janzen | f7ea333 | 2006-01-16 16:52:13 -0700 | [diff] [blame] | 1051 | * This helper function detects that case. |
| 1052 | */ |
| 1053 | |
| 1054 | static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb) |
| 1055 | { |
Dale Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 1056 | unsigned int frag; |
| 1057 | skb_frag_t *fragp; |
Paul Janzen | f7ea333 | 2006-01-16 16:52:13 -0700 | [diff] [blame] | 1058 | |
Dale Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 1059 | 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 Janzen | f7ea333 | 2006-01-16 16:52:13 -0700 | [diff] [blame] | 1065 | } |
| 1066 | |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1067 | /** |
| 1068 | * eth_alloc_tx_desc_index - return the index of the next available tx desc |
| 1069 | */ |
| 1070 | static int eth_alloc_tx_desc_index(struct mv643xx_private *mp) |
| 1071 | { |
| 1072 | int tx_desc_curr; |
Paul Janzen | f7ea333 | 2006-01-16 16:52:13 -0700 | [diff] [blame] | 1073 | |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1074 | BUG_ON(mp->tx_desc_count >= mp->tx_ring_size); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1075 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1076 | tx_desc_curr = mp->tx_curr_desc_q; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1077 | 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1086 | * |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1087 | * Ensure the data for each fragment to be transmitted is mapped properly, |
| 1088 | * then fill in descriptors in the tx hw queue. |
| 1089 | */ |
| 1090 | static 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 Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1096 | |
| 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 Viro | 0598077 | 2006-05-30 23:59:09 -0400 | [diff] [blame] | 1111 | mp->tx_skb[tx_index] = NULL; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1112 | |
| 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 Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1120 | } |
| 1121 | } |
| 1122 | |
| 1123 | /** |
| 1124 | * eth_tx_submit_descs_for_skb - submit data from an skb to the tx hw |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | * |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1126 | * 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 Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1129 | static void eth_tx_submit_descs_for_skb(struct mv643xx_private *mp, |
| 1130 | struct sk_buff *skb) |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1131 | { |
| 1132 | int tx_index; |
| 1133 | struct eth_tx_desc *desc; |
| 1134 | u32 cmd_sts; |
| 1135 | int length; |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1136 | int nr_frags = skb_shinfo(skb)->nr_frags; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1137 | |
| 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 Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1143 | if (nr_frags) { |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1144 | eth_tx_fill_frag_descs(mp, skb); |
| 1145 | |
| 1146 | length = skb_headlen(skb); |
Al Viro | 0598077 | 2006-05-30 23:59:09 -0400 | [diff] [blame] | 1147 | mp->tx_skb[tx_index] = NULL; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1148 | } 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 Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1158 | |
Patrick McHardy | 84fa793 | 2006-08-29 16:44:56 -0700 | [diff] [blame] | 1159 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1160 | 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 Melo | eddc9ec | 2007-04-20 22:47:35 -0700 | [diff] [blame] | 1164 | ip_hdr(skb)->ihl << ETH_TX_IHL_SHIFT; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1165 | |
Arnaldo Carvalho de Melo | eddc9ec | 2007-04-20 22:47:35 -0700 | [diff] [blame] | 1166 | switch (ip_hdr(skb)->protocol) { |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1167 | case IPPROTO_UDP: |
| 1168 | cmd_sts |= ETH_UDP_FRAME; |
Arnaldo Carvalho de Melo | 4bedb45 | 2007-03-13 14:28:48 -0300 | [diff] [blame] | 1169 | desc->l4i_chk = udp_hdr(skb)->check; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1170 | break; |
| 1171 | case IPPROTO_TCP: |
Arnaldo Carvalho de Melo | aa8223c | 2007-04-10 21:04:22 -0700 | [diff] [blame] | 1172 | desc->l4i_chk = tcp_hdr(skb)->check; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1173 | 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 Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1189 | mv643xx_eth_port_enable_tx(mp->port_num, ETH_TX_QUEUES_ENABLED); |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1190 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1191 | mp->tx_desc_count += nr_frags + 1; |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1192 | } |
| 1193 | |
| 1194 | /** |
| 1195 | * mv643xx_eth_start_xmit - queue an skb to the hardware for transmission |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | */ |
| 1198 | static 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1204 | BUG_ON(netif_queue_stopped(dev)); |
| 1205 | BUG_ON(skb == NULL); |
Dale Farnsworth | 9484356 | 2006-04-11 18:24:26 -0700 | [diff] [blame] | 1206 | |
| 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | |
Paul Janzen | f7ea333 | 2006-01-16 16:52:13 -0700 | [diff] [blame] | 1213 | if (has_tiny_unaligned_frags(skb)) { |
Herbert Xu | 364c6ba | 2006-06-09 16:10:40 -0700 | [diff] [blame] | 1214 | if (__skb_linearize(skb)) { |
Paul Janzen | f7ea333 | 2006-01-16 16:52:13 -0700 | [diff] [blame] | 1215 | 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | spin_lock_irqsave(&mp->lock, flags); |
| 1223 | |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1224 | eth_tx_submit_descs_for_skb(mp, skb); |
| 1225 | stats->tx_bytes = skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | stats->tx_packets++; |
| 1227 | dev->trans_start = jiffies; |
| 1228 | |
Dale Farnsworth | c8aaea2 | 2006-03-03 10:02:05 -0700 | [diff] [blame] | 1229 | if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB) |
| 1230 | netif_stop_queue(dev); |
| 1231 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | 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 | |
| 1247 | static 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 Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 1254 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Dale Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 1255 | static void mv643xx_netpoll(struct net_device *netdev) |
| 1256 | { |
| 1257 | struct mv643xx_private *mp = netdev_priv(netdev); |
Dale Farnsworth | c2e5b35 | 2006-01-16 17:00:24 -0700 | [diff] [blame] | 1258 | int port_num = mp->port_num; |
Dale Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 1259 | |
Dale Farnsworth | 7303fde | 2006-03-03 10:03:36 -0700 | [diff] [blame] | 1260 | mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL); |
Dale Farnsworth | c2e5b35 | 2006-01-16 17:00:24 -0700 | [diff] [blame] | 1261 | /* wait for previous write to complete */ |
| 1262 | mv_read(MV643XX_ETH_INTERRUPT_MASK_REG(port_num)); |
| 1263 | |
Al Viro | 9da3b1a | 2006-10-08 15:00:44 +0100 | [diff] [blame] | 1264 | mv643xx_eth_int_handler(netdev->irq, netdev); |
Dale Farnsworth | c2e5b35 | 2006-01-16 17:00:24 -0700 | [diff] [blame] | 1265 | |
Dale Farnsworth | 7303fde | 2006-03-03 10:03:36 -0700 | [diff] [blame] | 1266 | mv_write(MV643XX_ETH_INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL); |
Dale Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 1267 | } |
| 1268 | #endif |
| 1269 | |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 1270 | static 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | /*/ |
| 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 King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1310 | static int mv643xx_eth_probe(struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | struct mv643xx_eth_platform_data *pd; |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 1313 | int port_num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | struct mv643xx_private *mp; |
| 1315 | struct net_device *dev; |
| 1316 | u8 *p; |
| 1317 | struct resource *res; |
| 1318 | int err; |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 1319 | struct ethtool_cmd cmd; |
Dale Farnsworth | 0199987 | 2006-01-27 01:18:01 -0700 | [diff] [blame] | 1320 | int duplex = DUPLEX_HALF; |
| 1321 | int speed = 0; /* default to auto-negotiation */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 1323 | 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | dev = alloc_etherdev(sizeof(struct mv643xx_private)); |
| 1330 | if (!dev) |
| 1331 | return -ENOMEM; |
| 1332 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1333 | platform_set_drvdata(pdev, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | |
| 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1341 | 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 Farnsworth | 63c9e54 | 2005-09-02 13:49:10 -0700 | [diff] [blame] | 1355 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 1356 | dev->poll_controller = mv643xx_netpoll; |
| 1357 | #endif |
| 1358 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | 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 Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 1363 | dev->do_ioctl = mv643xx_eth_do_ioctl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | 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 Joost | 6389057 | 2006-01-16 16:57:41 -0700 | [diff] [blame] | 1372 | dev->features = NETIF_F_SG | NETIF_F_IP_CSUM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | #endif |
| 1374 | #endif |
| 1375 | |
| 1376 | /* Configure the timeout task */ |
Al Viro | 91c7c56 | 2006-12-06 19:50:06 +0000 | [diff] [blame] | 1377 | INIT_WORK(&mp->tx_timeout_task, mv643xx_eth_tx_timeout_task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | |
| 1379 | spin_lock_init(&mp->lock); |
| 1380 | |
Gabriel Paubert | fadac40 | 2007-03-23 12:03:52 -0700 | [diff] [blame] | 1381 | port_num = mp->port_num = pd->port_number; |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 1382 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | /* set default config values */ |
| 1384 | eth_port_uc_addr_get(dev, dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | 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 Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 1388 | if (is_valid_ether_addr(pd->mac_addr)) |
| 1389 | memcpy(dev->dev_addr, pd->mac_addr, 6); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 1391 | if (pd->phy_addr || pd->force_phy_addr) |
| 1392 | ethernet_phy_set(port_num, pd->phy_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 1394 | if (pd->rx_queue_size) |
| 1395 | mp->rx_ring_size = pd->rx_queue_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 1397 | if (pd->tx_queue_size) |
| 1398 | mp->tx_ring_size = pd->tx_queue_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1399 | |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 1400 | if (pd->tx_sram_size) { |
| 1401 | mp->tx_sram_size = pd->tx_sram_size; |
| 1402 | mp->tx_sram_addr = pd->tx_sram_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | } |
| 1404 | |
Dale Farnsworth | 84dd619 | 2007-03-03 06:40:28 -0700 | [diff] [blame] | 1405 | 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 Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 1413 | /* 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1421 | 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 Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 1426 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | } |
| 1428 | |
Dale Farnsworth | 0199987 | 2006-01-27 01:18:01 -0700 | [diff] [blame] | 1429 | ethernet_phy_reset(port_num); |
James Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 1430 | mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii); |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 1431 | 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 Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 1434 | |
Olaf Hering | b0b8dab | 2006-04-27 18:23:49 -0700 | [diff] [blame] | 1435 | SET_MODULE_OWNER(dev); |
| 1436 | SET_NETDEV_DEV(dev, &pdev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1437 | 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 DET | b152987 | 2005-10-28 17:46:30 -0700 | [diff] [blame] | 1466 | if (mp->tx_sram_size > 0) |
| 1467 | printk(KERN_NOTICE "%s: Using SRAM\n", dev->name); |
| 1468 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | return 0; |
| 1470 | |
| 1471 | out: |
| 1472 | free_netdev(dev); |
| 1473 | |
| 1474 | return err; |
| 1475 | } |
| 1476 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1477 | static int mv643xx_eth_remove(struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1479 | struct net_device *dev = platform_get_drvdata(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1480 | |
| 1481 | unregister_netdev(dev); |
| 1482 | flush_scheduled_work(); |
| 1483 | |
| 1484 | free_netdev(dev); |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1485 | platform_set_drvdata(pdev, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1486 | return 0; |
| 1487 | } |
| 1488 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1489 | static int mv643xx_eth_shared_probe(struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | 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 King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1508 | static int mv643xx_eth_shared_remove(struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | { |
| 1510 | iounmap(mv643xx_eth_shared_base); |
| 1511 | mv643xx_eth_shared_base = NULL; |
| 1512 | |
| 1513 | return 0; |
| 1514 | } |
| 1515 | |
Dale Farnsworth | d57ab6f | 2007-03-20 16:38:04 -0700 | [diff] [blame] | 1516 | static 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 King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1529 | static struct platform_driver mv643xx_eth_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | .probe = mv643xx_eth_probe, |
| 1531 | .remove = mv643xx_eth_remove, |
Dale Farnsworth | d57ab6f | 2007-03-20 16:38:04 -0700 | [diff] [blame] | 1532 | .shutdown = mv643xx_eth_shutdown, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1533 | .driver = { |
| 1534 | .name = MV643XX_ETH_NAME, |
| 1535 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | }; |
| 1537 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1538 | static struct platform_driver mv643xx_eth_shared_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1539 | .probe = mv643xx_eth_shared_probe, |
| 1540 | .remove = mv643xx_eth_shared_remove, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1541 | .driver = { |
| 1542 | .name = MV643XX_ETH_SHARED_NAME, |
| 1543 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1544 | }; |
| 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 | */ |
| 1555 | static int __init mv643xx_init_module(void) |
| 1556 | { |
| 1557 | int rc; |
| 1558 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1559 | rc = platform_driver_register(&mv643xx_eth_shared_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | if (!rc) { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1561 | rc = platform_driver_register(&mv643xx_eth_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | if (rc) |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1563 | platform_driver_unregister(&mv643xx_eth_shared_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | } |
| 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 | */ |
| 1577 | static void __exit mv643xx_cleanup_module(void) |
| 1578 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1579 | platform_driver_unregister(&mv643xx_eth_driver); |
| 1580 | platform_driver_unregister(&mv643xx_eth_shared_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1581 | } |
| 1582 | |
| 1583 | module_init(mv643xx_init_module); |
| 1584 | module_exit(mv643xx_cleanup_module); |
| 1585 | |
| 1586 | MODULE_LICENSE("GPL"); |
| 1587 | MODULE_AUTHOR( "Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, Manish Lachwani" |
| 1588 | " and Dale Farnsworth"); |
| 1589 | MODULE_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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | * 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1698 | * 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | /* PHY routines */ |
| 1715 | static int ethernet_phy_get(unsigned int eth_port_num); |
| 1716 | static void ethernet_phy_set(unsigned int eth_port_num, int phy_addr); |
| 1717 | |
| 1718 | /* Ethernet Port routines */ |
Dale Farnsworth | cf4086c | 2006-01-27 01:07:48 -0700 | [diff] [blame] | 1719 | static void eth_port_set_filter_table_entry(int table, unsigned char entry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | |
| 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 | */ |
| 1745 | static void eth_port_init(struct mv643xx_private *mp) |
| 1746 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1747 | mp->rx_resource_err = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1748 | |
| 1749 | eth_port_reset(mp->port_num); |
| 1750 | |
| 1751 | eth_port_init_mac_tables(mp->port_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | } |
| 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 Farnsworth | ed9b5d4 | 2006-01-27 01:06:38 -0700 | [diff] [blame] | 1773 | * dev - a pointer to the required interface |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1774 | * |
| 1775 | * OUTPUT: |
| 1776 | * Ethernet port is ready to receive and transmit. |
| 1777 | * |
| 1778 | * RETURN: |
| 1779 | * None. |
| 1780 | */ |
Dale Farnsworth | ed9b5d4 | 2006-01-27 01:06:38 -0700 | [diff] [blame] | 1781 | static void eth_port_start(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | { |
Dale Farnsworth | ed9b5d4 | 2006-01-27 01:06:38 -0700 | [diff] [blame] | 1783 | struct mv643xx_private *mp = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1784 | unsigned int port_num = mp->port_num; |
| 1785 | int tx_curr_desc, rx_curr_desc; |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 1786 | u32 pscr; |
| 1787 | struct ethtool_cmd ethtool_cmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | |
| 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 Farnsworth | ed9b5d4 | 2006-01-27 01:06:38 -0700 | [diff] [blame] | 1800 | eth_port_uc_addr_set(port_num, dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1801 | |
| 1802 | /* Assign port configuration and command. */ |
Dale Farnsworth | 0199987 | 2006-01-27 01:18:01 -0700 | [diff] [blame] | 1803 | 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1808 | |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 1809 | pscr = mv_read(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num)); |
Dale Farnsworth | 0199987 | 2006-01-27 01:18:01 -0700 | [diff] [blame] | 1810 | |
| 1811 | pscr &= ~(MV643XX_ETH_SERIAL_PORT_ENABLE | MV643XX_ETH_FORCE_LINK_PASS); |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 1812 | mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1813 | |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 1814 | 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 1820 | mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1821 | |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 1822 | pscr |= MV643XX_ETH_SERIAL_PORT_ENABLE; |
| 1823 | mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), pscr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1824 | |
| 1825 | /* Assign port SDMA configuration */ |
Dale Farnsworth | 0199987 | 2006-01-27 01:18:01 -0700 | [diff] [blame] | 1826 | mv_write(MV643XX_ETH_SDMA_CONFIG_REG(port_num), |
| 1827 | MV643XX_ETH_PORT_SDMA_CONFIG_DEFAULT_VALUE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1828 | |
| 1829 | /* Enable port Rx. */ |
Dale Farnsworth | ff561ee | 2006-03-03 10:02:51 -0700 | [diff] [blame] | 1830 | mv643xx_eth_port_enable_rx(port_num, ETH_RX_QUEUES_ENABLED); |
Dale Farnsworth | 8f54371 | 2005-09-02 12:34:35 -0700 | [diff] [blame] | 1831 | |
| 1832 | /* Disable port bandwidth limits by clearing MTU register */ |
| 1833 | mv_write(MV643XX_ETH_MAXIMUM_TRANSMIT_UNIT(port_num), 0); |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 1834 | |
| 1835 | /* save phy settings across reset */ |
| 1836 | mv643xx_get_settings(dev, ðtool_cmd); |
| 1837 | ethernet_phy_reset(mp->port_num); |
| 1838 | mv643xx_set_settings(dev, ðtool_cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1839 | } |
| 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 Farnsworth | cf4086c | 2006-01-27 01:07:48 -0700 | [diff] [blame] | 1852 | * 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | * |
| 1856 | * RETURN: |
| 1857 | * N/A. |
| 1858 | * |
| 1859 | */ |
| 1860 | static 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 Farnsworth | cf4086c | 2006-01-27 01:07:48 -0700 | [diff] [blame] | 1865 | int table; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1866 | |
| 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 Farnsworth | cf4086c | 2006-01-27 01:07:48 -0700 | [diff] [blame] | 1875 | table = MV643XX_ETH_DA_FILTER_UNICAST_TABLE_BASE(eth_port_num); |
| 1876 | eth_port_set_filter_table_entry(table, p_addr[5] & 0x0f); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1877 | } |
| 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 | */ |
| 1897 | static 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 Farnsworth | 16e0301 | 2006-01-16 16:50:02 -0700 | [diff] [blame] | 1915 | * 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 | */ |
| 1923 | static 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 | */ |
| 1952 | static 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 | */ |
| 2045 | static 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 Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 2060 | /* 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 Farnsworth | 16e0301 | 2006-01-16 16:50:02 -0700 | [diff] [blame] | 2069 | |
Dale Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 2070 | /* 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 Farnsworth | 16e0301 | 2006-01-16 16:50:02 -0700 | [diff] [blame] | 2080 | 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2105 | * 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 | */ |
| 2120 | static 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 Farnsworth | cf4086c | 2006-01-27 01:07:48 -0700 | [diff] [blame] | 2126 | mv_write(MV643XX_ETH_DA_FILTER_UNICAST_TABLE_BASE |
| 2127 | (eth_port_num) + table_index, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2128 | |
| 2129 | for (table_index = 0; table_index <= 0xFC; table_index += 4) { |
| 2130 | /* Clear DA filter special multicast table (Ex_dFSMT) */ |
Dale Farnsworth | 16e0301 | 2006-01-16 16:50:02 -0700 | [diff] [blame] | 2131 | mv_write(MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE |
| 2132 | (eth_port_num) + table_index, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2133 | /* Clear DA filter other multicast table (Ex_dFOMT) */ |
Dale Farnsworth | 16e0301 | 2006-01-16 16:50:02 -0700 | [diff] [blame] | 2134 | mv_write(MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE |
| 2135 | (eth_port_num) + table_index, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2136 | } |
| 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 | */ |
| 2156 | static 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 | |
| 2166 | static 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 | |
| 2171 | static 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 Bizon | 70fbf32 | 2006-10-03 10:27:10 -0700 | [diff] [blame] | 2184 | *(u32 *)((char *)p + offset) += read_mib(mp, offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2185 | |
| 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 Bizon | 70fbf32 | 2006-10-03 10:27:10 -0700 | [diff] [blame] | 2193 | *(u32 *)((char *)p + offset) += read_mib(mp, offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2194 | } |
| 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 | */ |
| 2214 | static 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 | */ |
| 2249 | static 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 | */ |
| 2275 | static 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 | */ |
| 2302 | static 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 Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 2310 | |
| 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2316 | } |
| 2317 | |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2318 | static void mv643xx_eth_port_enable_tx(unsigned int port_num, |
Dale Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 2319 | unsigned int queues) |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2320 | { |
Dale Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 2321 | mv_write(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num), queues); |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2322 | } |
| 2323 | |
| 2324 | static void mv643xx_eth_port_enable_rx(unsigned int port_num, |
Dale Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 2325 | unsigned int queues) |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2326 | { |
Dale Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 2327 | mv_write(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num), queues); |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2328 | } |
| 2329 | |
| 2330 | static unsigned int mv643xx_eth_port_disable_tx(unsigned int port_num) |
| 2331 | { |
Dale Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 2332 | u32 queues; |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2333 | |
| 2334 | /* Stop Tx port activity. Check port Tx activity. */ |
Dale Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 2335 | queues = mv_read(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num)) |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2336 | & 0xFF; |
Dale Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 2337 | if (queues) { |
| 2338 | /* Issue stop command for active queues only */ |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2339 | mv_write(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(port_num), |
Dale Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 2340 | (queues << 8)); |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2341 | |
| 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 Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 2354 | return queues; |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2355 | } |
| 2356 | |
| 2357 | static unsigned int mv643xx_eth_port_disable_rx(unsigned int port_num) |
| 2358 | { |
Dale Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 2359 | u32 queues; |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2360 | |
| 2361 | /* Stop Rx port activity. Check port Rx activity. */ |
Dale Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 2362 | queues = mv_read(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num)) |
Dale Farnsworth | e38fd1a | 2006-03-03 09:59:28 -0700 | [diff] [blame] | 2363 | & 0xFF; |
Dale Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 2364 | if (queues) { |
| 2365 | /* Issue stop command for active queues only */ |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2366 | mv_write(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port_num), |
Dale Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 2367 | (queues << 8)); |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2368 | |
| 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 Farnsworth | 12a87c6 | 2006-03-03 10:00:22 -0700 | [diff] [blame] | 2376 | return queues; |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2377 | } |
| 2378 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2379 | /* |
| 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 | */ |
| 2397 | static void eth_port_reset(unsigned int port_num) |
| 2398 | { |
| 2399 | unsigned int reg_data; |
| 2400 | |
Dale Farnsworth | 9f8dd31 | 2006-01-27 01:10:47 -0700 | [diff] [blame] | 2401 | mv643xx_eth_port_disable_tx(port_num); |
| 2402 | mv643xx_eth_port_disable_rx(port_num); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2403 | |
| 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 Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 2409 | reg_data &= ~(MV643XX_ETH_SERIAL_PORT_ENABLE | |
| 2410 | MV643XX_ETH_DO_NOT_FORCE_LINK_FAIL | |
| 2411 | MV643XX_ETH_FORCE_LINK_PASS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2412 | mv_write(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(port_num), reg_data); |
| 2413 | } |
| 2414 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2415 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2416 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2417 | * 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 | */ |
| 2436 | static 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; |
| 2468 | out: |
| 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 | */ |
| 2492 | static 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)); |
| 2516 | out: |
| 2517 | spin_unlock_irqrestore(&mv643xx_eth_phy_lock, flags); |
| 2518 | } |
| 2519 | |
| 2520 | /* |
James Chapman | c28a4f8 | 2006-01-27 01:13:15 -0700 | [diff] [blame] | 2521 | * Wrappers for MII support library. |
| 2522 | */ |
| 2523 | static 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 | |
| 2532 | static 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2539 | * 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 | */ |
| 2561 | static 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 Farnsworth | 8f51870 | 2006-01-16 16:56:30 -0700 | [diff] [blame] | 2567 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2568 | |
| 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 Farnsworth | 8f51870 | 2006-01-16 16:56:30 -0700 | [diff] [blame] | 2573 | spin_lock_irqsave(&mp->lock, flags); |
| 2574 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2575 | /* 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 Farnsworth | 8f51870 | 2006-01-16 16:56:30 -0700 | [diff] [blame] | 2586 | if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) { |
| 2587 | spin_unlock_irqrestore(&mp->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2588 | return ETH_END_OF_JOB; |
Dale Farnsworth | 8f51870 | 2006-01-16 16:56:30 -0700 | [diff] [blame] | 2589 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2590 | |
| 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 Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 2597 | /* |
| 2598 | * Clean the return info field to indicate that the |
| 2599 | * packet has been moved to the upper layers |
| 2600 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2601 | 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 Farnsworth | 8f51870 | 2006-01-16 16:56:30 -0700 | [diff] [blame] | 2611 | spin_unlock_irqrestore(&mp->lock, flags); |
| 2612 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2613 | 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 | */ |
| 2636 | static 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 Farnsworth | 8f51870 | 2006-01-16 16:56:30 -0700 | [diff] [blame] | 2641 | unsigned long flags; |
| 2642 | |
| 2643 | spin_lock_irqsave(&mp->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2644 | |
| 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 Farnsworth | 8f51870 | 2006-01-16 16:56:30 -0700 | [diff] [blame] | 2667 | spin_unlock_irqrestore(&mp->lock, flags); |
| 2668 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2669 | return ETH_OK; |
| 2670 | } |
| 2671 | |
| 2672 | /************* Begin ethtool support *************************/ |
| 2673 | |
| 2674 | struct 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 Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 2681 | offsetof(struct mv643xx_private, m) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2682 | |
| 2683 | static 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 Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 2727 | static void mv643xx_get_drvinfo(struct net_device *netdev, |
| 2728 | struct ethtool_drvinfo *drvinfo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2729 | { |
| 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 Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 2737 | static int mv643xx_get_stats_count(struct net_device *netdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2738 | { |
| 2739 | return MV643XX_STATS_LEN; |
| 2740 | } |
| 2741 | |
Dale Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 2742 | static void mv643xx_get_ethtool_stats(struct net_device *netdev, |
| 2743 | struct ethtool_stats *stats, uint64_t *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2744 | { |
| 2745 | struct mv643xx_private *mp = netdev->priv; |
| 2746 | int i; |
| 2747 | |
| 2748 | eth_update_mib_counters(mp); |
| 2749 | |
Dale Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 2750 | for (i = 0; i < MV643XX_STATS_LEN; i++) { |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 2751 | char *p = (char *)mp+mv643xx_gstrings_stats[i].stat_offset; |
Dale Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 2752 | data[i] = (mv643xx_gstrings_stats[i].sizeof_stat == |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2753 | sizeof(uint64_t)) ? *(uint64_t *)p : *(uint32_t *)p; |
| 2754 | } |
| 2755 | } |
| 2756 | |
Dale Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 2757 | static void mv643xx_get_strings(struct net_device *netdev, uint32_t stringset, |
| 2758 | uint8_t *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2759 | { |
| 2760 | int i; |
| 2761 | |
| 2762 | switch(stringset) { |
| 2763 | case ETH_SS_STATS: |
| 2764 | for (i=0; i < MV643XX_STATS_LEN; i++) { |
Dale Farnsworth | b4de905 | 2006-01-27 01:04:43 -0700 | [diff] [blame] | 2765 | memcpy(data + i * ETH_GSTRING_LEN, |
| 2766 | mv643xx_gstrings_stats[i].stat_string, |
| 2767 | ETH_GSTRING_LEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2768 | } |
| 2769 | break; |
| 2770 | } |
| 2771 | } |
| 2772 | |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 2773 | static 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 | |
| 2780 | static 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 | |
| 2787 | static 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 Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 2794 | static const struct ethtool_ops mv643xx_ethtool_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2795 | .get_settings = mv643xx_get_settings, |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 2796 | .set_settings = mv643xx_set_settings, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2797 | .get_drvinfo = mv643xx_get_drvinfo, |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 2798 | .get_link = mv643xx_eth_get_link, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2799 | .get_sg = ethtool_op_get_sg, |
| 2800 | .set_sg = ethtool_op_set_sg, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2801 | .get_stats_count = mv643xx_get_stats_count, |
| 2802 | .get_ethtool_stats = mv643xx_get_ethtool_stats, |
James Chapman | d0412d9 | 2006-01-27 01:15:30 -0700 | [diff] [blame] | 2803 | .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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2807 | }; |
| 2808 | |
| 2809 | /************* End ethtool support *************************/ |