Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /*====================================================================== |
| 2 | |
| 3 | A PCMCIA ethernet driver for Asix AX88190-based cards |
| 4 | |
| 5 | The Asix AX88190 is a NS8390-derived chipset with a few nasty |
| 6 | idiosyncracies that make it very inconvenient to support with a |
| 7 | standard 8390 driver. This driver is based on pcnet_cs, with the |
| 8 | tweaked 8390 code grafted on the end. Much of what I did was to |
| 9 | clean up and update a similar driver supplied by Asix, which was |
| 10 | adapted by William Lee, william@asix.com.tw. |
| 11 | |
| 12 | Copyright (C) 2001 David A. Hinds -- dahinds@users.sourceforge.net |
| 13 | |
| 14 | axnet_cs.c 1.28 2002/06/29 06:27:37 |
| 15 | |
| 16 | The network driver code is based on Donald Becker's NE2000 code: |
| 17 | |
| 18 | Written 1992,1993 by Donald Becker. |
| 19 | Copyright 1993 United States Government as represented by the |
| 20 | Director, National Security Agency. This software may be used and |
| 21 | distributed according to the terms of the GNU General Public License, |
| 22 | incorporated herein by reference. |
| 23 | Donald Becker may be reached at becker@scyld.com |
| 24 | |
| 25 | ======================================================================*/ |
| 26 | |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/module.h> |
| 29 | #include <linux/init.h> |
| 30 | #include <linux/ptrace.h> |
| 31 | #include <linux/slab.h> |
| 32 | #include <linux/string.h> |
| 33 | #include <linux/timer.h> |
| 34 | #include <linux/delay.h> |
| 35 | #include <linux/spinlock.h> |
| 36 | #include <linux/ethtool.h> |
| 37 | #include <linux/netdevice.h> |
Stephen Hemminger | 3dd2051 | 2009-03-20 19:36:11 +0000 | [diff] [blame] | 38 | #include <linux/etherdevice.h> |
Komuro | b8ab2dc | 2006-03-26 07:31:55 +0900 | [diff] [blame] | 39 | #include <linux/crc32.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include "../8390.h" |
| 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <pcmcia/cs_types.h> |
| 43 | #include <pcmcia/cs.h> |
| 44 | #include <pcmcia/cistpl.h> |
| 45 | #include <pcmcia/ciscode.h> |
| 46 | #include <pcmcia/ds.h> |
| 47 | #include <pcmcia/cisreg.h> |
| 48 | |
| 49 | #include <asm/io.h> |
| 50 | #include <asm/system.h> |
| 51 | #include <asm/byteorder.h> |
| 52 | #include <asm/uaccess.h> |
| 53 | |
| 54 | #define AXNET_CMD 0x00 |
| 55 | #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */ |
| 56 | #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */ |
| 57 | #define AXNET_MII_EEP 0x14 /* Offset of MII access port */ |
| 58 | #define AXNET_TEST 0x15 /* Offset of TEST Register port */ |
| 59 | #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */ |
| 60 | |
| 61 | #define AXNET_START_PG 0x40 /* First page of TX buffer */ |
| 62 | #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */ |
| 63 | |
| 64 | #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */ |
| 65 | |
| 66 | #define IS_AX88190 0x0001 |
| 67 | #define IS_AX88790 0x0002 |
| 68 | |
| 69 | /*====================================================================*/ |
| 70 | |
| 71 | /* Module parameters */ |
| 72 | |
| 73 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); |
| 74 | MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver"); |
| 75 | MODULE_LICENSE("GPL"); |
| 76 | |
| 77 | #ifdef PCMCIA_DEBUG |
| 78 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) |
| 79 | |
| 80 | INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG); |
| 81 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) |
| 82 | static char *version = |
| 83 | "axnet_cs.c 1.28 2002/06/29 06:27:37 (David Hinds)"; |
| 84 | #else |
| 85 | #define DEBUG(n, args...) |
| 86 | #endif |
| 87 | |
| 88 | /*====================================================================*/ |
| 89 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 90 | static int axnet_config(struct pcmcia_device *link); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 91 | static void axnet_release(struct pcmcia_device *link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | static int axnet_open(struct net_device *dev); |
| 93 | static int axnet_close(struct net_device *dev); |
| 94 | static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
Stephen Hemminger | 3dd2051 | 2009-03-20 19:36:11 +0000 | [diff] [blame] | 95 | static int axnet_start_xmit(struct sk_buff *skb, struct net_device *dev); |
| 96 | static struct net_device_stats *get_stats(struct net_device *dev); |
| 97 | static void set_multicast_list(struct net_device *dev); |
| 98 | static void axnet_tx_timeout(struct net_device *dev); |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 99 | static const struct ethtool_ops netdev_ethtool_ops; |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 100 | static irqreturn_t ei_irq_wrapper(int irq, void *dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | static void ei_watchdog(u_long arg); |
| 102 | static void axnet_reset_8390(struct net_device *dev); |
| 103 | |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 104 | static int mdio_read(unsigned int addr, int phy_id, int loc); |
| 105 | static void mdio_write(unsigned int addr, int phy_id, int loc, int value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | |
| 107 | static void get_8390_hdr(struct net_device *, |
| 108 | struct e8390_pkt_hdr *, int); |
| 109 | static void block_input(struct net_device *dev, int count, |
| 110 | struct sk_buff *skb, int ring_offset); |
| 111 | static void block_output(struct net_device *dev, int count, |
| 112 | const u_char *buf, const int start_page); |
| 113 | |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 114 | static void axnet_detach(struct pcmcia_device *p_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | static void AX88190_init(struct net_device *dev, int startp); |
| 117 | static int ax_open(struct net_device *dev); |
| 118 | static int ax_close(struct net_device *dev); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 119 | static irqreturn_t ax_interrupt(int irq, void *dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | |
| 121 | /*====================================================================*/ |
| 122 | |
| 123 | typedef struct axnet_dev_t { |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 124 | struct pcmcia_device *p_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | dev_node_t node; |
| 126 | caddr_t base; |
| 127 | struct timer_list watchdog; |
| 128 | int stale, fast_poll; |
| 129 | u_short link_status; |
| 130 | u_char duplex_flag; |
| 131 | int phy_id; |
| 132 | int flags; |
| 133 | } axnet_dev_t; |
| 134 | |
| 135 | static inline axnet_dev_t *PRIV(struct net_device *dev) |
| 136 | { |
| 137 | void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device); |
| 138 | return p; |
| 139 | } |
| 140 | |
Stephen Hemminger | 3dd2051 | 2009-03-20 19:36:11 +0000 | [diff] [blame] | 141 | static const struct net_device_ops axnet_netdev_ops = { |
| 142 | .ndo_open = axnet_open, |
| 143 | .ndo_stop = axnet_close, |
| 144 | .ndo_do_ioctl = axnet_ioctl, |
| 145 | .ndo_start_xmit = axnet_start_xmit, |
| 146 | .ndo_tx_timeout = axnet_tx_timeout, |
| 147 | .ndo_get_stats = get_stats, |
| 148 | .ndo_set_multicast_list = set_multicast_list, |
| 149 | .ndo_change_mtu = eth_change_mtu, |
| 150 | .ndo_set_mac_address = eth_mac_addr, |
| 151 | .ndo_validate_addr = eth_validate_addr, |
| 152 | }; |
| 153 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | /*====================================================================== |
| 155 | |
| 156 | axnet_attach() creates an "instance" of the driver, allocating |
| 157 | local data structures for one device. The device is registered |
| 158 | with Card Services. |
| 159 | |
| 160 | ======================================================================*/ |
| 161 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 162 | static int axnet_probe(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | { |
| 164 | axnet_dev_t *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | struct net_device *dev; |
Stephen Hemminger | 3dd2051 | 2009-03-20 19:36:11 +0000 | [diff] [blame] | 166 | struct ei_device *ei_local; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | |
| 168 | DEBUG(0, "axnet_attach()\n"); |
| 169 | |
Stephen Hemminger | 3dd2051 | 2009-03-20 19:36:11 +0000 | [diff] [blame] | 170 | dev = alloc_etherdev(sizeof(struct ei_device) + sizeof(axnet_dev_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | if (!dev) |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame] | 172 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
Stephen Hemminger | 3dd2051 | 2009-03-20 19:36:11 +0000 | [diff] [blame] | 174 | ei_local = netdev_priv(dev); |
| 175 | spin_lock_init(&ei_local->page_lock); |
| 176 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | info = PRIV(dev); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 178 | info->p_dev = link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | link->priv = dev; |
Komuro | 5e7bf8c | 2007-10-28 11:26:17 +0900 | [diff] [blame] | 180 | link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; |
| 182 | link->conf.Attributes = CONF_ENABLE_IRQ; |
| 183 | link->conf.IntType = INT_MEMORY_AND_IO; |
| 184 | |
Stephen Hemminger | 3dd2051 | 2009-03-20 19:36:11 +0000 | [diff] [blame] | 185 | dev->netdev_ops = &axnet_netdev_ops; |
| 186 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); |
Stephen Hemminger | 3dd2051 | 2009-03-20 19:36:11 +0000 | [diff] [blame] | 188 | dev->watchdog_timeo = TX_TIMEOUT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 190 | return axnet_config(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | } /* axnet_attach */ |
| 192 | |
| 193 | /*====================================================================== |
| 194 | |
| 195 | This deletes a driver "instance". The device is de-registered |
| 196 | with Card Services. If it has been released, all local data |
| 197 | structures are freed. Otherwise, the structures will be freed |
| 198 | when the device is released. |
| 199 | |
| 200 | ======================================================================*/ |
| 201 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 202 | static void axnet_detach(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | { |
| 204 | struct net_device *dev = link->priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | |
| 206 | DEBUG(0, "axnet_detach(0x%p)\n", link); |
| 207 | |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 208 | if (link->dev_node) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | unregister_netdev(dev); |
| 210 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 211 | axnet_release(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | free_netdev(dev); |
| 214 | } /* axnet_detach */ |
| 215 | |
| 216 | /*====================================================================== |
| 217 | |
| 218 | This probes for a card's hardware address by reading the PROM. |
| 219 | |
| 220 | ======================================================================*/ |
| 221 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 222 | static int get_prom(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | { |
| 224 | struct net_device *dev = link->priv; |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 225 | unsigned int ioaddr = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | int i, j; |
| 227 | |
| 228 | /* This is based on drivers/net/ne.c */ |
| 229 | struct { |
| 230 | u_char value, offset; |
| 231 | } program_seq[] = { |
| 232 | {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/ |
| 233 | {0x01, EN0_DCFG}, /* Set word-wide access. */ |
| 234 | {0x00, EN0_RCNTLO}, /* Clear the count regs. */ |
| 235 | {0x00, EN0_RCNTHI}, |
| 236 | {0x00, EN0_IMR}, /* Mask completion irq. */ |
| 237 | {0xFF, EN0_ISR}, |
| 238 | {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */ |
| 239 | {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ |
| 240 | {0x10, EN0_RCNTLO}, |
| 241 | {0x00, EN0_RCNTHI}, |
| 242 | {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */ |
| 243 | {0x04, EN0_RSARHI}, |
| 244 | {E8390_RREAD+E8390_START, E8390_CMD}, |
| 245 | }; |
| 246 | |
| 247 | /* Not much of a test, but the alternatives are messy */ |
| 248 | if (link->conf.ConfigBase != 0x03c0) |
| 249 | return 0; |
| 250 | |
| 251 | axnet_reset_8390(dev); |
| 252 | mdelay(10); |
| 253 | |
Denis Cheng | ff8ac60 | 2007-09-02 18:30:18 +0800 | [diff] [blame] | 254 | for (i = 0; i < ARRAY_SIZE(program_seq); i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | outb_p(program_seq[i].value, ioaddr + program_seq[i].offset); |
| 256 | |
| 257 | for (i = 0; i < 6; i += 2) { |
| 258 | j = inw(ioaddr + AXNET_DATAPORT); |
| 259 | dev->dev_addr[i] = j & 0xff; |
| 260 | dev->dev_addr[i+1] = j >> 8; |
| 261 | } |
| 262 | return 1; |
| 263 | } /* get_prom */ |
| 264 | |
| 265 | /*====================================================================== |
| 266 | |
| 267 | axnet_config() is scheduled to run after a CARD_INSERTION event |
| 268 | is received, to configure the PCMCIA socket, and to make the |
| 269 | ethernet device available to the system. |
| 270 | |
| 271 | ======================================================================*/ |
| 272 | |
| 273 | #define CS_CHECK(fn, ret) \ |
| 274 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) |
| 275 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 276 | static int try_io_port(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | { |
| 278 | int j, ret; |
| 279 | if (link->io.NumPorts1 == 32) { |
| 280 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; |
| 281 | if (link->io.NumPorts2 > 0) { |
| 282 | /* for master/slave multifunction cards */ |
| 283 | link->io.Attributes2 = IO_DATA_PATH_WIDTH_8; |
Dominik Brodowski | 4c89e88 | 2008-08-03 10:07:45 +0200 | [diff] [blame] | 284 | link->irq.Attributes = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED; |
| 286 | } |
| 287 | } else { |
| 288 | /* This should be two 16-port windows */ |
| 289 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; |
| 290 | link->io.Attributes2 = IO_DATA_PATH_WIDTH_16; |
| 291 | } |
| 292 | if (link->io.BasePort1 == 0) { |
| 293 | link->io.IOAddrLines = 16; |
| 294 | for (j = 0; j < 0x400; j += 0x20) { |
| 295 | link->io.BasePort1 = j ^ 0x300; |
| 296 | link->io.BasePort2 = (j ^ 0x300) + 0x10; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 297 | ret = pcmcia_request_io(link, &link->io); |
Dominik Brodowski | 4c89e88 | 2008-08-03 10:07:45 +0200 | [diff] [blame] | 298 | if (ret == 0) |
| 299 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | } |
| 301 | return ret; |
| 302 | } else { |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 303 | return pcmcia_request_io(link, &link->io); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | } |
| 305 | } |
| 306 | |
Dominik Brodowski | b54bf94 | 2008-08-02 14:28:43 +0200 | [diff] [blame] | 307 | static int axnet_configcheck(struct pcmcia_device *p_dev, |
| 308 | cistpl_cftable_entry_t *cfg, |
Dominik Brodowski | 8e2fc39 | 2008-08-02 15:30:31 +0200 | [diff] [blame] | 309 | cistpl_cftable_entry_t *dflt, |
Dominik Brodowski | ad913c1 | 2008-08-02 16:12:00 +0200 | [diff] [blame] | 310 | unsigned int vcc, |
Dominik Brodowski | b54bf94 | 2008-08-02 14:28:43 +0200 | [diff] [blame] | 311 | void *priv_data) |
| 312 | { |
| 313 | int i; |
| 314 | cistpl_io_t *io = &cfg->io; |
| 315 | |
| 316 | if (cfg->index == 0 || cfg->io.nwin == 0) |
| 317 | return -ENODEV; |
| 318 | |
| 319 | p_dev->conf.ConfigIndex = 0x05; |
| 320 | /* For multifunction cards, by convention, we configure the |
| 321 | network function with window 0, and serial with window 1 */ |
| 322 | if (io->nwin > 1) { |
| 323 | i = (io->win[1].len > io->win[0].len); |
| 324 | p_dev->io.BasePort2 = io->win[1-i].base; |
| 325 | p_dev->io.NumPorts2 = io->win[1-i].len; |
| 326 | } else { |
| 327 | i = p_dev->io.NumPorts2 = 0; |
| 328 | } |
| 329 | p_dev->io.BasePort1 = io->win[i].base; |
| 330 | p_dev->io.NumPorts1 = io->win[i].len; |
| 331 | p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; |
| 332 | if (p_dev->io.NumPorts1 + p_dev->io.NumPorts2 >= 32) |
| 333 | return try_io_port(p_dev); |
| 334 | |
| 335 | return -ENODEV; |
| 336 | } |
| 337 | |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 338 | static int axnet_config(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | struct net_device *dev = link->priv; |
| 341 | axnet_dev_t *info = PRIV(dev); |
Ken Kawasaki | ad3620a | 2009-04-04 14:49:07 +0000 | [diff] [blame] | 342 | int i, j, j2, last_ret, last_fn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | |
| 344 | DEBUG(0, "axnet_config(0x%p)\n", link); |
| 345 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | /* don't trust the CIS on this; Linksys got it wrong */ |
| 347 | link->conf.Present = 0x63; |
Dominik Brodowski | b54bf94 | 2008-08-02 14:28:43 +0200 | [diff] [blame] | 348 | last_ret = pcmcia_loop_config(link, axnet_configcheck, NULL); |
Dominik Brodowski | 4c89e88 | 2008-08-03 10:07:45 +0200 | [diff] [blame] | 349 | if (last_ret != 0) { |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 350 | cs_error(link, RequestIO, last_ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | goto failed; |
| 352 | } |
| 353 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 354 | CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | |
| 356 | if (link->io.NumPorts2 == 8) { |
| 357 | link->conf.Attributes |= CONF_ENABLE_SPKR; |
| 358 | link->conf.Status = CCSR_AUDIO_ENA; |
| 359 | } |
| 360 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 361 | CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | dev->irq = link->irq.AssignedIRQ; |
| 363 | dev->base_addr = link->io.BasePort1; |
| 364 | |
| 365 | if (!get_prom(link)) { |
| 366 | printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n"); |
| 367 | printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n"); |
| 368 | goto failed; |
| 369 | } |
| 370 | |
| 371 | ei_status.name = "AX88190"; |
| 372 | ei_status.word16 = 1; |
| 373 | ei_status.tx_start_page = AXNET_START_PG; |
| 374 | ei_status.rx_start_page = AXNET_START_PG + TX_PAGES; |
| 375 | ei_status.stop_page = AXNET_STOP_PG; |
| 376 | ei_status.reset_8390 = &axnet_reset_8390; |
| 377 | ei_status.get_8390_hdr = &get_8390_hdr; |
| 378 | ei_status.block_input = &block_input; |
| 379 | ei_status.block_output = &block_output; |
| 380 | |
| 381 | if (inb(dev->base_addr + AXNET_TEST) != 0) |
| 382 | info->flags |= IS_AX88790; |
| 383 | else |
| 384 | info->flags |= IS_AX88190; |
| 385 | |
| 386 | if (info->flags & IS_AX88790) |
| 387 | outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */ |
| 388 | |
| 389 | for (i = 0; i < 32; i++) { |
| 390 | j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1); |
Ken Kawasaki | ad3620a | 2009-04-04 14:49:07 +0000 | [diff] [blame] | 391 | j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2); |
| 392 | if (j == j2) continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | if ((j != 0) && (j != 0xffff)) break; |
| 394 | } |
| 395 | |
| 396 | /* Maybe PHY is in power down mode. (PPD_SET = 1) |
| 397 | Bit 2 of CCSR is active low. */ |
| 398 | if (i == 32) { |
| 399 | conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 }; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 400 | pcmcia_access_configuration_register(link, ®); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | for (i = 0; i < 32; i++) { |
| 402 | j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1); |
Ken Kawasaki | ad3620a | 2009-04-04 14:49:07 +0000 | [diff] [blame] | 403 | j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2); |
| 404 | if (j == j2) continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | if ((j != 0) && (j != 0xffff)) break; |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | info->phy_id = (i < 32) ? i : -1; |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 410 | link->dev_node = &info->node; |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 411 | SET_NETDEV_DEV(dev, &handle_to_dev(link)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | |
| 413 | if (register_netdev(dev) != 0) { |
| 414 | printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n"); |
Dominik Brodowski | fd23823 | 2006-03-05 10:45:09 +0100 | [diff] [blame] | 415 | link->dev_node = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | goto failed; |
| 417 | } |
| 418 | |
| 419 | strcpy(info->node.dev_name, dev->name); |
| 420 | |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 421 | printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, " |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 422 | "hw_addr %pM\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | dev->name, ((info->flags & IS_AX88790) ? 7 : 1), |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 424 | dev->base_addr, dev->irq, |
Johannes Berg | e174961 | 2008-10-27 15:59:26 -0700 | [diff] [blame] | 425 | dev->dev_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | if (info->phy_id != -1) { |
| 427 | DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j); |
| 428 | } else { |
| 429 | printk(KERN_NOTICE " No MII transceivers found!\n"); |
| 430 | } |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 431 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | |
| 433 | cs_failed: |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 434 | cs_error(link, last_fn, last_ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | failed: |
| 436 | axnet_release(link); |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 437 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | } /* axnet_config */ |
| 439 | |
| 440 | /*====================================================================== |
| 441 | |
| 442 | After a card is removed, axnet_release() will unregister the net |
| 443 | device, and release the PCMCIA configuration. If the device is |
| 444 | still open, this will be postponed until it is closed. |
| 445 | |
| 446 | ======================================================================*/ |
| 447 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 448 | static void axnet_release(struct pcmcia_device *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | { |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 450 | pcmcia_disable_device(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | } |
| 452 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 453 | static int axnet_suspend(struct pcmcia_device *link) |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 454 | { |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 455 | struct net_device *dev = link->priv; |
| 456 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 457 | if (link->open) |
| 458 | netif_device_detach(dev); |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 459 | |
| 460 | return 0; |
| 461 | } |
| 462 | |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 463 | static int axnet_resume(struct pcmcia_device *link) |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 464 | { |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 465 | struct net_device *dev = link->priv; |
| 466 | |
Dominik Brodowski | e2d4096 | 2006-03-02 00:09:29 +0100 | [diff] [blame] | 467 | if (link->open) { |
Dominik Brodowski | 8661bb5 | 2006-03-02 00:02:33 +0100 | [diff] [blame] | 468 | axnet_reset_8390(dev); |
| 469 | AX88190_init(dev, 1); |
| 470 | netif_device_attach(dev); |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 471 | } |
| 472 | |
| 473 | return 0; |
| 474 | } |
| 475 | |
| 476 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | /*====================================================================== |
| 478 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | MII interface support |
| 480 | |
| 481 | ======================================================================*/ |
| 482 | |
| 483 | #define MDIO_SHIFT_CLK 0x01 |
| 484 | #define MDIO_DATA_WRITE0 0x00 |
| 485 | #define MDIO_DATA_WRITE1 0x08 |
| 486 | #define MDIO_DATA_READ 0x04 |
| 487 | #define MDIO_MASK 0x0f |
| 488 | #define MDIO_ENB_IN 0x02 |
| 489 | |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 490 | static void mdio_sync(unsigned int addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | { |
| 492 | int bits; |
| 493 | for (bits = 0; bits < 32; bits++) { |
| 494 | outb_p(MDIO_DATA_WRITE1, addr); |
| 495 | outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr); |
| 496 | } |
| 497 | } |
| 498 | |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 499 | static int mdio_read(unsigned int addr, int phy_id, int loc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | { |
| 501 | u_int cmd = (0xf6<<10)|(phy_id<<5)|loc; |
| 502 | int i, retval = 0; |
| 503 | |
| 504 | mdio_sync(addr); |
| 505 | for (i = 14; i >= 0; i--) { |
| 506 | int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; |
| 507 | outb_p(dat, addr); |
| 508 | outb_p(dat | MDIO_SHIFT_CLK, addr); |
| 509 | } |
| 510 | for (i = 19; i > 0; i--) { |
| 511 | outb_p(MDIO_ENB_IN, addr); |
| 512 | retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0); |
| 513 | outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr); |
| 514 | } |
| 515 | return (retval>>1) & 0xffff; |
| 516 | } |
| 517 | |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 518 | static void mdio_write(unsigned int addr, int phy_id, int loc, int value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | { |
| 520 | u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value; |
| 521 | int i; |
| 522 | |
| 523 | mdio_sync(addr); |
| 524 | for (i = 31; i >= 0; i--) { |
| 525 | int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; |
| 526 | outb_p(dat, addr); |
| 527 | outb_p(dat | MDIO_SHIFT_CLK, addr); |
| 528 | } |
| 529 | for (i = 1; i >= 0; i--) { |
| 530 | outb_p(MDIO_ENB_IN, addr); |
| 531 | outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr); |
| 532 | } |
| 533 | } |
| 534 | |
| 535 | /*====================================================================*/ |
| 536 | |
| 537 | static int axnet_open(struct net_device *dev) |
| 538 | { |
Yoichi Yuasa | 59b34c1 | 2007-06-05 22:55:06 +0900 | [diff] [blame] | 539 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | axnet_dev_t *info = PRIV(dev); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 541 | struct pcmcia_device *link = info->p_dev; |
Komuro | 54299ef | 2008-06-07 21:37:56 +0900 | [diff] [blame] | 542 | unsigned int nic_base = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | |
| 544 | DEBUG(2, "axnet_open('%s')\n", dev->name); |
| 545 | |
Dominik Brodowski | 9940ec3 | 2006-03-05 11:04:33 +0100 | [diff] [blame] | 546 | if (!pcmcia_dev_present(link)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | return -ENODEV; |
| 548 | |
Komuro | 54299ef | 2008-06-07 21:37:56 +0900 | [diff] [blame] | 549 | outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */ |
Yoichi Yuasa | 59b34c1 | 2007-06-05 22:55:06 +0900 | [diff] [blame] | 550 | ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev); |
| 551 | if (ret) |
| 552 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
Yoichi Yuasa | 59b34c1 | 2007-06-05 22:55:06 +0900 | [diff] [blame] | 554 | link->open++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | |
| 556 | info->link_status = 0x00; |
| 557 | init_timer(&info->watchdog); |
| 558 | info->watchdog.function = &ei_watchdog; |
| 559 | info->watchdog.data = (u_long)dev; |
| 560 | info->watchdog.expires = jiffies + HZ; |
| 561 | add_timer(&info->watchdog); |
| 562 | |
| 563 | return ax_open(dev); |
| 564 | } /* axnet_open */ |
| 565 | |
| 566 | /*====================================================================*/ |
| 567 | |
| 568 | static int axnet_close(struct net_device *dev) |
| 569 | { |
| 570 | axnet_dev_t *info = PRIV(dev); |
Dominik Brodowski | fba395e | 2006-03-31 17:21:06 +0200 | [diff] [blame] | 571 | struct pcmcia_device *link = info->p_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | |
| 573 | DEBUG(2, "axnet_close('%s')\n", dev->name); |
| 574 | |
| 575 | ax_close(dev); |
| 576 | free_irq(dev->irq, dev); |
| 577 | |
| 578 | link->open--; |
| 579 | netif_stop_queue(dev); |
| 580 | del_timer_sync(&info->watchdog); |
| 581 | |
| 582 | return 0; |
| 583 | } /* axnet_close */ |
| 584 | |
| 585 | /*====================================================================== |
| 586 | |
| 587 | Hard reset the card. This used to pause for the same period that |
| 588 | a 8390 reset command required, but that shouldn't be necessary. |
| 589 | |
| 590 | ======================================================================*/ |
| 591 | |
| 592 | static void axnet_reset_8390(struct net_device *dev) |
| 593 | { |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 594 | unsigned int nic_base = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | int i; |
| 596 | |
| 597 | ei_status.txing = ei_status.dmaing = 0; |
| 598 | |
| 599 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD); |
| 600 | |
| 601 | outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET); |
| 602 | |
| 603 | for (i = 0; i < 100; i++) { |
| 604 | if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0) |
| 605 | break; |
| 606 | udelay(100); |
| 607 | } |
| 608 | outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */ |
| 609 | |
| 610 | if (i == 100) |
| 611 | printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n", |
| 612 | dev->name); |
| 613 | |
| 614 | } /* axnet_reset_8390 */ |
| 615 | |
| 616 | /*====================================================================*/ |
| 617 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 618 | static irqreturn_t ei_irq_wrapper(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | { |
| 620 | struct net_device *dev = dev_id; |
| 621 | PRIV(dev)->stale = 0; |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 622 | return ax_interrupt(irq, dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | } |
| 624 | |
| 625 | static void ei_watchdog(u_long arg) |
| 626 | { |
| 627 | struct net_device *dev = (struct net_device *)(arg); |
| 628 | axnet_dev_t *info = PRIV(dev); |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 629 | unsigned int nic_base = dev->base_addr; |
| 630 | unsigned int mii_addr = nic_base + AXNET_MII_EEP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | u_short link; |
| 632 | |
| 633 | if (!netif_device_present(dev)) goto reschedule; |
| 634 | |
| 635 | /* Check for pending interrupt with expired latency timer: with |
| 636 | this, we can limp along even if the interrupt is blocked */ |
| 637 | if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) { |
| 638 | if (!info->fast_poll) |
| 639 | printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 640 | ei_irq_wrapper(dev->irq, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | info->fast_poll = HZ; |
| 642 | } |
| 643 | if (info->fast_poll) { |
| 644 | info->fast_poll--; |
| 645 | info->watchdog.expires = jiffies + 1; |
| 646 | add_timer(&info->watchdog); |
| 647 | return; |
| 648 | } |
| 649 | |
| 650 | if (info->phy_id < 0) |
| 651 | goto reschedule; |
| 652 | link = mdio_read(mii_addr, info->phy_id, 1); |
| 653 | if (!link || (link == 0xffff)) { |
| 654 | printk(KERN_INFO "%s: MII is missing!\n", dev->name); |
| 655 | info->phy_id = -1; |
| 656 | goto reschedule; |
| 657 | } |
| 658 | |
| 659 | link &= 0x0004; |
| 660 | if (link != info->link_status) { |
| 661 | u_short p = mdio_read(mii_addr, info->phy_id, 5); |
| 662 | printk(KERN_INFO "%s: %s link beat\n", dev->name, |
| 663 | (link) ? "found" : "lost"); |
| 664 | if (link) { |
| 665 | info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00; |
| 666 | if (p) |
| 667 | printk(KERN_INFO "%s: autonegotiation complete: " |
| 668 | "%sbaseT-%cD selected\n", dev->name, |
| 669 | ((p & 0x0180) ? "100" : "10"), |
| 670 | ((p & 0x0140) ? 'F' : 'H')); |
| 671 | else |
| 672 | printk(KERN_INFO "%s: link partner did not autonegotiate\n", |
| 673 | dev->name); |
| 674 | AX88190_init(dev, 1); |
| 675 | } |
| 676 | info->link_status = link; |
| 677 | } |
| 678 | |
| 679 | reschedule: |
| 680 | info->watchdog.expires = jiffies + HZ; |
| 681 | add_timer(&info->watchdog); |
| 682 | } |
| 683 | |
| 684 | static void netdev_get_drvinfo(struct net_device *dev, |
| 685 | struct ethtool_drvinfo *info) |
| 686 | { |
| 687 | strcpy(info->driver, "axnet_cs"); |
| 688 | } |
| 689 | |
Jeff Garzik | 7282d49 | 2006-09-13 14:30:00 -0400 | [diff] [blame] | 690 | static const struct ethtool_ops netdev_ethtool_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | .get_drvinfo = netdev_get_drvinfo, |
| 692 | }; |
| 693 | |
| 694 | /*====================================================================*/ |
| 695 | |
| 696 | static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 697 | { |
| 698 | axnet_dev_t *info = PRIV(dev); |
| 699 | u16 *data = (u16 *)&rq->ifr_ifru; |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 700 | unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | switch (cmd) { |
| 702 | case SIOCGMIIPHY: |
| 703 | data[0] = info->phy_id; |
| 704 | case SIOCGMIIREG: /* Read MII PHY register. */ |
| 705 | data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f); |
| 706 | return 0; |
| 707 | case SIOCSMIIREG: /* Write MII PHY register. */ |
| 708 | if (!capable(CAP_NET_ADMIN)) |
| 709 | return -EPERM; |
| 710 | mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]); |
| 711 | return 0; |
| 712 | } |
| 713 | return -EOPNOTSUPP; |
| 714 | } |
| 715 | |
| 716 | /*====================================================================*/ |
| 717 | |
| 718 | static void get_8390_hdr(struct net_device *dev, |
| 719 | struct e8390_pkt_hdr *hdr, |
| 720 | int ring_page) |
| 721 | { |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 722 | unsigned int nic_base = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | |
| 724 | outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */ |
| 725 | outb_p(ring_page, nic_base + EN0_RSARHI); |
| 726 | outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD); |
| 727 | |
| 728 | insw(nic_base + AXNET_DATAPORT, hdr, |
| 729 | sizeof(struct e8390_pkt_hdr)>>1); |
| 730 | /* Fix for big endian systems */ |
| 731 | hdr->count = le16_to_cpu(hdr->count); |
| 732 | |
| 733 | } |
| 734 | |
| 735 | /*====================================================================*/ |
| 736 | |
| 737 | static void block_input(struct net_device *dev, int count, |
| 738 | struct sk_buff *skb, int ring_offset) |
| 739 | { |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 740 | unsigned int nic_base = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | int xfer_count = count; |
| 742 | char *buf = skb->data; |
| 743 | |
| 744 | #ifdef PCMCIA_DEBUG |
| 745 | if ((ei_debug > 4) && (count != 4)) |
| 746 | printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4); |
| 747 | #endif |
| 748 | outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO); |
| 749 | outb_p(ring_offset >> 8, nic_base + EN0_RSARHI); |
| 750 | outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD); |
| 751 | |
| 752 | insw(nic_base + AXNET_DATAPORT,buf,count>>1); |
| 753 | if (count & 0x01) |
| 754 | buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++; |
| 755 | |
| 756 | } |
| 757 | |
| 758 | /*====================================================================*/ |
| 759 | |
| 760 | static void block_output(struct net_device *dev, int count, |
| 761 | const u_char *buf, const int start_page) |
| 762 | { |
Olof Johansson | 906da80 | 2008-02-04 22:27:35 -0800 | [diff] [blame] | 763 | unsigned int nic_base = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | |
| 765 | #ifdef PCMCIA_DEBUG |
| 766 | if (ei_debug > 4) |
| 767 | printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count); |
| 768 | #endif |
| 769 | |
| 770 | /* Round the count up for word writes. Do we need to do this? |
| 771 | What effect will an odd byte count have on the 8390? |
| 772 | I should check someday. */ |
| 773 | if (count & 0x01) |
| 774 | count++; |
| 775 | |
| 776 | outb_p(0x00, nic_base + EN0_RSARLO); |
| 777 | outb_p(start_page, nic_base + EN0_RSARHI); |
| 778 | outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD); |
| 779 | outsw(nic_base + AXNET_DATAPORT, buf, count>>1); |
| 780 | } |
| 781 | |
Dominik Brodowski | c414f75 | 2005-06-27 16:28:20 -0700 | [diff] [blame] | 782 | static struct pcmcia_device_id axnet_ids[] = { |
| 783 | PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081), |
| 784 | PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301), |
| 785 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301), |
| 786 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303), |
| 787 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309), |
| 788 | PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106), |
| 789 | PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab), |
Komuro | c67eebd | 2006-08-16 13:54:11 +0900 | [diff] [blame] | 790 | PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202), |
Komuro | dad8c73 | 2007-09-30 10:28:14 +0900 | [diff] [blame] | 791 | PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090), |
Jesse Allen | 2fe22a8 | 2006-02-20 22:08:18 -0800 | [diff] [blame] | 792 | PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc), |
Dominik Brodowski | c414f75 | 2005-06-27 16:28:20 -0700 | [diff] [blame] | 793 | PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef), |
| 794 | PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef), |
| 795 | PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1), |
| 796 | PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc), |
| 797 | PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b), |
| 798 | PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5), |
| 799 | PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e), |
| 800 | PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90), |
Komuro | 2dcc9ff | 2008-08-30 12:13:33 +0900 | [diff] [blame] | 801 | PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2), |
Dominik Brodowski | c414f75 | 2005-06-27 16:28:20 -0700 | [diff] [blame] | 802 | PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8), |
| 803 | PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609), |
Cord Walter | 208fbec | 2008-11-20 13:46:57 +0000 | [diff] [blame] | 804 | PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875), |
Dominik Brodowski | c414f75 | 2005-06-27 16:28:20 -0700 | [diff] [blame] | 805 | PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04), |
| 806 | PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116), |
| 807 | PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058), |
| 808 | PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef), |
Dominik Brodowski | c414f75 | 2005-06-27 16:28:20 -0700 | [diff] [blame] | 809 | PCMCIA_DEVICE_NULL, |
| 810 | }; |
| 811 | MODULE_DEVICE_TABLE(pcmcia, axnet_ids); |
| 812 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | static struct pcmcia_driver axnet_cs_driver = { |
| 814 | .owner = THIS_MODULE, |
| 815 | .drv = { |
| 816 | .name = "axnet_cs", |
| 817 | }, |
Dominik Brodowski | 15b99ac | 2006-03-31 17:26:06 +0200 | [diff] [blame] | 818 | .probe = axnet_probe, |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 819 | .remove = axnet_detach, |
Dominik Brodowski | c414f75 | 2005-06-27 16:28:20 -0700 | [diff] [blame] | 820 | .id_table = axnet_ids, |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 821 | .suspend = axnet_suspend, |
| 822 | .resume = axnet_resume, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | }; |
| 824 | |
| 825 | static int __init init_axnet_cs(void) |
| 826 | { |
| 827 | return pcmcia_register_driver(&axnet_cs_driver); |
| 828 | } |
| 829 | |
| 830 | static void __exit exit_axnet_cs(void) |
| 831 | { |
| 832 | pcmcia_unregister_driver(&axnet_cs_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | } |
| 834 | |
| 835 | module_init(init_axnet_cs); |
| 836 | module_exit(exit_axnet_cs); |
| 837 | |
| 838 | /*====================================================================*/ |
| 839 | |
| 840 | /* 8390.c: A general NS8390 ethernet driver core for linux. */ |
| 841 | /* |
| 842 | Written 1992-94 by Donald Becker. |
| 843 | |
| 844 | Copyright 1993 United States Government as represented by the |
| 845 | Director, National Security Agency. |
| 846 | |
| 847 | This software may be used and distributed according to the terms |
| 848 | of the GNU General Public License, incorporated herein by reference. |
| 849 | |
| 850 | The author may be reached as becker@scyld.com, or C/O |
| 851 | Scyld Computing Corporation |
| 852 | 410 Severn Ave., Suite 210 |
| 853 | Annapolis MD 21403 |
| 854 | |
| 855 | This is the chip-specific code for many 8390-based ethernet adaptors. |
| 856 | This is not a complete driver, it must be combined with board-specific |
| 857 | code such as ne.c, wd.c, 3c503.c, etc. |
| 858 | |
| 859 | Seeing how at least eight drivers use this code, (not counting the |
| 860 | PCMCIA ones either) it is easy to break some card by what seems like |
| 861 | a simple innocent change. Please contact me or Donald if you think |
| 862 | you have found something that needs changing. -- PG |
| 863 | |
| 864 | Changelog: |
| 865 | |
| 866 | Paul Gortmaker : remove set_bit lock, other cleanups. |
| 867 | Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to |
| 868 | ei_block_input() for eth_io_copy_and_sum(). |
| 869 | Paul Gortmaker : exchange static int ei_pingpong for a #define, |
| 870 | also add better Tx error handling. |
| 871 | Paul Gortmaker : rewrite Rx overrun handling as per NS specs. |
| 872 | Alexey Kuznetsov : use the 8390's six bit hash multicast filter. |
| 873 | Paul Gortmaker : tweak ANK's above multicast changes a bit. |
| 874 | Paul Gortmaker : update packet statistics for v2.1.x |
| 875 | Alan Cox : support arbitary stupid port mappings on the |
| 876 | 68K Macintosh. Support >16bit I/O spaces |
| 877 | Paul Gortmaker : add kmod support for auto-loading of the 8390 |
| 878 | module by all drivers that require it. |
| 879 | Alan Cox : Spinlocking work, added 'BUG_83C690' |
| 880 | Paul Gortmaker : Separate out Tx timeout code from Tx path. |
| 881 | |
| 882 | Sources: |
| 883 | The National Semiconductor LAN Databook, and the 3Com 3c503 databook. |
| 884 | |
| 885 | */ |
| 886 | |
Hannes Eder | 6ae0385 | 2009-02-14 11:39:23 +0000 | [diff] [blame] | 887 | static const char version_8390[] = KERN_INFO \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n"; |
| 889 | |
| 890 | #include <linux/bitops.h> |
| 891 | #include <asm/irq.h> |
| 892 | #include <linux/fcntl.h> |
| 893 | #include <linux/in.h> |
| 894 | #include <linux/interrupt.h> |
| 895 | |
| 896 | #include <linux/etherdevice.h> |
| 897 | |
| 898 | #define BUG_83C690 |
| 899 | |
| 900 | /* These are the operational function interfaces to board-specific |
| 901 | routines. |
| 902 | void reset_8390(struct net_device *dev) |
| 903 | Resets the board associated with DEV, including a hardware reset of |
| 904 | the 8390. This is only called when there is a transmit timeout, and |
| 905 | it is always followed by 8390_init(). |
| 906 | void block_output(struct net_device *dev, int count, const unsigned char *buf, |
| 907 | int start_page) |
| 908 | Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The |
| 909 | "page" value uses the 8390's 256-byte pages. |
| 910 | void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page) |
| 911 | Read the 4 byte, page aligned 8390 header. *If* there is a |
| 912 | subsequent read, it will be of the rest of the packet. |
| 913 | void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) |
| 914 | Read COUNT bytes from the packet buffer into the skb data area. Start |
| 915 | reading from RING_OFFSET, the address as the 8390 sees it. This will always |
| 916 | follow the read of the 8390 header. |
| 917 | */ |
| 918 | #define ei_reset_8390 (ei_local->reset_8390) |
| 919 | #define ei_block_output (ei_local->block_output) |
| 920 | #define ei_block_input (ei_local->block_input) |
| 921 | #define ei_get_8390_hdr (ei_local->get_8390_hdr) |
| 922 | |
| 923 | /* use 0 for production, 1 for verification, >2 for debug */ |
| 924 | #ifndef ei_debug |
| 925 | int ei_debug = 1; |
| 926 | #endif |
| 927 | |
| 928 | /* Index to functions. */ |
| 929 | static void ei_tx_intr(struct net_device *dev); |
| 930 | static void ei_tx_err(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | static void ei_receive(struct net_device *dev); |
| 932 | static void ei_rx_overrun(struct net_device *dev); |
| 933 | |
| 934 | /* Routines generic to NS8390-based boards. */ |
| 935 | static void NS8390_trigger_send(struct net_device *dev, unsigned int length, |
| 936 | int start_page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | static void do_set_multicast_list(struct net_device *dev); |
| 938 | |
| 939 | /* |
| 940 | * SMP and the 8390 setup. |
| 941 | * |
| 942 | * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is |
| 943 | * a page register that controls bank and packet buffer access. We guard |
| 944 | * this with ei_local->page_lock. Nobody should assume or set the page other |
| 945 | * than zero when the lock is not held. Lock holders must restore page 0 |
| 946 | * before unlocking. Even pure readers must take the lock to protect in |
| 947 | * page 0. |
| 948 | * |
| 949 | * To make life difficult the chip can also be very slow. We therefore can't |
| 950 | * just use spinlocks. For the longer lockups we disable the irq the device |
| 951 | * sits on and hold the lock. We must hold the lock because there is a dual |
| 952 | * processor case other than interrupts (get stats/set multicast list in |
| 953 | * parallel with each other and transmit). |
| 954 | * |
| 955 | * Note: in theory we can just disable the irq on the card _but_ there is |
| 956 | * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs" |
| 957 | * enter lock, take the queued irq. So we waddle instead of flying. |
| 958 | * |
| 959 | * Finally by special arrangement for the purpose of being generally |
| 960 | * annoying the transmit function is called bh atomic. That places |
| 961 | * restrictions on the user context callers as disable_irq won't save |
| 962 | * them. |
| 963 | */ |
| 964 | |
| 965 | /** |
| 966 | * ax_open - Open/initialize the board. |
| 967 | * @dev: network device to initialize |
| 968 | * |
| 969 | * This routine goes all-out, setting everything |
| 970 | * up anew at each open, even though many of these registers should only |
| 971 | * need to be set once at boot. |
| 972 | */ |
| 973 | static int ax_open(struct net_device *dev) |
| 974 | { |
| 975 | unsigned long flags; |
| 976 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| 977 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | /* |
| 979 | * Grab the page lock so we own the register set, then call |
| 980 | * the init function. |
| 981 | */ |
| 982 | |
| 983 | spin_lock_irqsave(&ei_local->page_lock, flags); |
| 984 | AX88190_init(dev, 1); |
| 985 | /* Set the flag before we drop the lock, That way the IRQ arrives |
| 986 | after its set and we get no silly warnings */ |
| 987 | netif_start_queue(dev); |
| 988 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
| 989 | ei_local->irqlock = 0; |
| 990 | return 0; |
| 991 | } |
| 992 | |
| 993 | #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock) |
| 994 | |
| 995 | /** |
| 996 | * ax_close - shut down network device |
| 997 | * @dev: network device to close |
| 998 | * |
| 999 | * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done. |
| 1000 | */ |
Richard Knutsson | 6b2e438 | 2008-02-04 22:27:40 -0800 | [diff] [blame] | 1001 | static int ax_close(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1002 | { |
| 1003 | unsigned long flags; |
| 1004 | |
| 1005 | /* |
| 1006 | * Hold the page lock during close |
| 1007 | */ |
| 1008 | |
| 1009 | spin_lock_irqsave(&dev_lock(dev), flags); |
| 1010 | AX88190_init(dev, 0); |
| 1011 | spin_unlock_irqrestore(&dev_lock(dev), flags); |
| 1012 | netif_stop_queue(dev); |
| 1013 | return 0; |
| 1014 | } |
| 1015 | |
| 1016 | /** |
David S. Miller | 70eb1bf | 2008-11-23 20:01:59 -0800 | [diff] [blame] | 1017 | * axnet_tx_timeout - handle transmit time out condition |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | * @dev: network device which has apparently fallen asleep |
| 1019 | * |
| 1020 | * Called by kernel when device never acknowledges a transmit has |
| 1021 | * completed (or failed) - i.e. never posted a Tx related interrupt. |
| 1022 | */ |
| 1023 | |
David S. Miller | 70eb1bf | 2008-11-23 20:01:59 -0800 | [diff] [blame] | 1024 | static void axnet_tx_timeout(struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | { |
| 1026 | long e8390_base = dev->base_addr; |
| 1027 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| 1028 | int txsr, isr, tickssofar = jiffies - dev->trans_start; |
| 1029 | unsigned long flags; |
| 1030 | |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1031 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | |
| 1033 | spin_lock_irqsave(&ei_local->page_lock, flags); |
| 1034 | txsr = inb(e8390_base+EN0_TSR); |
| 1035 | isr = inb(e8390_base+EN0_ISR); |
| 1036 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
| 1037 | |
| 1038 | printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n", |
| 1039 | dev->name, (txsr & ENTSR_ABT) ? "excess collisions." : |
| 1040 | (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar); |
| 1041 | |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1042 | if (!isr && !dev->stats.tx_packets) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | { |
| 1044 | /* The 8390 probably hasn't gotten on the cable yet. */ |
| 1045 | ei_local->interface_num ^= 1; /* Try a different xcvr. */ |
| 1046 | } |
| 1047 | |
| 1048 | /* Ugly but a reset can be slow, yet must be protected */ |
| 1049 | |
Komuro | bd5a934 | 2007-11-11 11:04:36 +0900 | [diff] [blame] | 1050 | spin_lock_irqsave(&ei_local->page_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | |
| 1052 | /* Try to restart the card. Perhaps the user has fixed something. */ |
| 1053 | ei_reset_8390(dev); |
| 1054 | AX88190_init(dev, 1); |
| 1055 | |
Komuro | bd5a934 | 2007-11-11 11:04:36 +0900 | [diff] [blame] | 1056 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | netif_wake_queue(dev); |
| 1058 | } |
| 1059 | |
| 1060 | /** |
David S. Miller | 70eb1bf | 2008-11-23 20:01:59 -0800 | [diff] [blame] | 1061 | * axnet_start_xmit - begin packet transmission |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1062 | * @skb: packet to be sent |
| 1063 | * @dev: network device to which packet is sent |
| 1064 | * |
| 1065 | * Sends a packet to an 8390 network device. |
| 1066 | */ |
| 1067 | |
David S. Miller | 70eb1bf | 2008-11-23 20:01:59 -0800 | [diff] [blame] | 1068 | static int axnet_start_xmit(struct sk_buff *skb, struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | { |
| 1070 | long e8390_base = dev->base_addr; |
| 1071 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| 1072 | int length, send_length, output_page; |
| 1073 | unsigned long flags; |
| 1074 | u8 packet[ETH_ZLEN]; |
| 1075 | |
| 1076 | netif_stop_queue(dev); |
| 1077 | |
| 1078 | length = skb->len; |
| 1079 | |
| 1080 | /* Mask interrupts from the ethercard. |
| 1081 | SMP: We have to grab the lock here otherwise the IRQ handler |
| 1082 | on another CPU can flip window and race the IRQ mask set. We end |
| 1083 | up trashing the mcast filter not disabling irqs if we don't lock */ |
| 1084 | |
| 1085 | spin_lock_irqsave(&ei_local->page_lock, flags); |
| 1086 | outb_p(0x00, e8390_base + EN0_IMR); |
| 1087 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
| 1088 | |
| 1089 | /* |
| 1090 | * Slow phase with lock held. |
| 1091 | */ |
| 1092 | |
Komuro | bd5a934 | 2007-11-11 11:04:36 +0900 | [diff] [blame] | 1093 | spin_lock_irqsave(&ei_local->page_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | |
| 1095 | ei_local->irqlock = 1; |
| 1096 | |
Richard Knutsson | c61f26f | 2008-02-04 22:27:41 -0800 | [diff] [blame] | 1097 | send_length = max(length, ETH_ZLEN); |
| 1098 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | /* |
| 1100 | * We have two Tx slots available for use. Find the first free |
| 1101 | * slot, and then perform some sanity checks. With two Tx bufs, |
| 1102 | * you get very close to transmitting back-to-back packets. With |
| 1103 | * only one Tx buf, the transmitter sits idle while you reload the |
| 1104 | * card, leaving a substantial gap between each transmitted packet. |
| 1105 | */ |
| 1106 | |
| 1107 | if (ei_local->tx1 == 0) |
| 1108 | { |
| 1109 | output_page = ei_local->tx_start_page; |
| 1110 | ei_local->tx1 = send_length; |
| 1111 | if (ei_debug && ei_local->tx2 > 0) |
| 1112 | printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n", |
| 1113 | dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing); |
| 1114 | } |
| 1115 | else if (ei_local->tx2 == 0) |
| 1116 | { |
| 1117 | output_page = ei_local->tx_start_page + TX_PAGES/2; |
| 1118 | ei_local->tx2 = send_length; |
| 1119 | if (ei_debug && ei_local->tx1 > 0) |
| 1120 | printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n", |
| 1121 | dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing); |
| 1122 | } |
| 1123 | else |
| 1124 | { /* We should never get here. */ |
| 1125 | if (ei_debug) |
| 1126 | printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n", |
| 1127 | dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx); |
| 1128 | ei_local->irqlock = 0; |
| 1129 | netif_stop_queue(dev); |
| 1130 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); |
Komuro | bd5a934 | 2007-11-11 11:04:36 +0900 | [diff] [blame] | 1131 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1132 | dev->stats.tx_errors++; |
Patrick McHardy | 5b54814 | 2009-06-12 06:22:29 +0000 | [diff] [blame] | 1133 | return NETDEV_TX_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | } |
| 1135 | |
| 1136 | /* |
| 1137 | * Okay, now upload the packet and trigger a send if the transmitter |
| 1138 | * isn't already sending. If it is busy, the interrupt handler will |
| 1139 | * trigger the send later, upon receiving a Tx done interrupt. |
| 1140 | */ |
| 1141 | |
| 1142 | if (length == skb->len) |
| 1143 | ei_block_output(dev, length, skb->data, output_page); |
| 1144 | else { |
| 1145 | memset(packet, 0, ETH_ZLEN); |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 1146 | skb_copy_from_linear_data(skb, packet, skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | ei_block_output(dev, length, packet, output_page); |
| 1148 | } |
| 1149 | |
| 1150 | if (! ei_local->txing) |
| 1151 | { |
| 1152 | ei_local->txing = 1; |
| 1153 | NS8390_trigger_send(dev, send_length, output_page); |
| 1154 | dev->trans_start = jiffies; |
| 1155 | if (output_page == ei_local->tx_start_page) |
| 1156 | { |
| 1157 | ei_local->tx1 = -1; |
| 1158 | ei_local->lasttx = -1; |
| 1159 | } |
| 1160 | else |
| 1161 | { |
| 1162 | ei_local->tx2 = -1; |
| 1163 | ei_local->lasttx = -2; |
| 1164 | } |
| 1165 | } |
| 1166 | else ei_local->txqueue++; |
| 1167 | |
| 1168 | if (ei_local->tx1 && ei_local->tx2) |
| 1169 | netif_stop_queue(dev); |
| 1170 | else |
| 1171 | netif_start_queue(dev); |
| 1172 | |
| 1173 | /* Turn 8390 interrupts back on. */ |
| 1174 | ei_local->irqlock = 0; |
| 1175 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); |
| 1176 | |
Komuro | bd5a934 | 2007-11-11 11:04:36 +0900 | [diff] [blame] | 1177 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | |
| 1179 | dev_kfree_skb (skb); |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1180 | dev->stats.tx_bytes += send_length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1181 | |
| 1182 | return 0; |
| 1183 | } |
| 1184 | |
| 1185 | /** |
| 1186 | * ax_interrupt - handle the interrupts from an 8390 |
| 1187 | * @irq: interrupt number |
| 1188 | * @dev_id: a pointer to the net_device |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | * |
| 1190 | * Handle the ether interface interrupts. We pull packets from |
| 1191 | * the 8390 via the card specific functions and fire them at the networking |
| 1192 | * stack. We also handle transmit completions and wake the transmit path if |
| 1193 | * necessary. We also update the counters and do other housekeeping as |
| 1194 | * needed. |
| 1195 | */ |
| 1196 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1197 | static irqreturn_t ax_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1198 | { |
| 1199 | struct net_device *dev = dev_id; |
| 1200 | long e8390_base; |
| 1201 | int interrupts, nr_serviced = 0, i; |
| 1202 | struct ei_device *ei_local; |
| 1203 | int handled = 0; |
| 1204 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | e8390_base = dev->base_addr; |
Jeff Garzik | c31f28e | 2006-10-06 14:56:04 -0400 | [diff] [blame] | 1206 | ei_local = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1207 | |
| 1208 | /* |
| 1209 | * Protect the irq test too. |
| 1210 | */ |
| 1211 | |
| 1212 | spin_lock(&ei_local->page_lock); |
| 1213 | |
| 1214 | if (ei_local->irqlock) |
| 1215 | { |
| 1216 | #if 1 /* This might just be an interrupt for a PCI device sharing this line */ |
| 1217 | /* The "irqlock" check is only for testing. */ |
| 1218 | printk(ei_local->irqlock |
| 1219 | ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n" |
| 1220 | : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n", |
| 1221 | dev->name, inb_p(e8390_base + EN0_ISR), |
| 1222 | inb_p(e8390_base + EN0_IMR)); |
| 1223 | #endif |
| 1224 | spin_unlock(&ei_local->page_lock); |
| 1225 | return IRQ_NONE; |
| 1226 | } |
| 1227 | |
| 1228 | if (ei_debug > 3) |
| 1229 | printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name, |
| 1230 | inb_p(e8390_base + EN0_ISR)); |
| 1231 | |
| 1232 | outb_p(0x00, e8390_base + EN0_ISR); |
| 1233 | ei_local->irqlock = 1; |
| 1234 | |
| 1235 | /* !!Assumption!! -- we stay in page 0. Don't break this. */ |
| 1236 | while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0 |
| 1237 | && ++nr_serviced < MAX_SERVICE) |
| 1238 | { |
| 1239 | if (!netif_running(dev) || (interrupts == 0xff)) { |
| 1240 | if (ei_debug > 1) |
| 1241 | printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name); |
| 1242 | outb_p(interrupts, e8390_base + EN0_ISR); |
| 1243 | interrupts = 0; |
| 1244 | break; |
| 1245 | } |
| 1246 | handled = 1; |
| 1247 | |
| 1248 | /* AX88190 bug fix. */ |
| 1249 | outb_p(interrupts, e8390_base + EN0_ISR); |
| 1250 | for (i = 0; i < 10; i++) { |
| 1251 | if (!(inb(e8390_base + EN0_ISR) & interrupts)) |
| 1252 | break; |
| 1253 | outb_p(0, e8390_base + EN0_ISR); |
| 1254 | outb_p(interrupts, e8390_base + EN0_ISR); |
| 1255 | } |
| 1256 | if (interrupts & ENISR_OVER) |
| 1257 | ei_rx_overrun(dev); |
| 1258 | else if (interrupts & (ENISR_RX+ENISR_RX_ERR)) |
| 1259 | { |
| 1260 | /* Got a good (?) packet. */ |
| 1261 | ei_receive(dev); |
| 1262 | } |
| 1263 | /* Push the next to-transmit packet through. */ |
| 1264 | if (interrupts & ENISR_TX) |
| 1265 | ei_tx_intr(dev); |
| 1266 | else if (interrupts & ENISR_TX_ERR) |
| 1267 | ei_tx_err(dev); |
| 1268 | |
| 1269 | if (interrupts & ENISR_COUNTERS) |
| 1270 | { |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1271 | dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0); |
| 1272 | dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1); |
| 1273 | dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | } |
| 1275 | } |
| 1276 | |
Komuro | 36c86bd | 2008-03-01 10:52:03 +0900 | [diff] [blame] | 1277 | if (interrupts && ei_debug > 3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1278 | { |
| 1279 | handled = 1; |
| 1280 | if (nr_serviced >= MAX_SERVICE) |
| 1281 | { |
| 1282 | /* 0xFF is valid for a card removal */ |
| 1283 | if(interrupts!=0xFF) |
| 1284 | printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n", |
| 1285 | dev->name, interrupts); |
| 1286 | outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */ |
| 1287 | } else { |
| 1288 | printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts); |
| 1289 | outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */ |
| 1290 | } |
| 1291 | } |
| 1292 | |
| 1293 | /* Turn 8390 interrupts back on. */ |
| 1294 | ei_local->irqlock = 0; |
| 1295 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); |
| 1296 | |
| 1297 | spin_unlock(&ei_local->page_lock); |
| 1298 | return IRQ_RETVAL(handled); |
| 1299 | } |
| 1300 | |
| 1301 | /** |
| 1302 | * ei_tx_err - handle transmitter error |
| 1303 | * @dev: network device which threw the exception |
| 1304 | * |
| 1305 | * A transmitter error has happened. Most likely excess collisions (which |
| 1306 | * is a fairly normal condition). If the error is one where the Tx will |
| 1307 | * have been aborted, we try and send another one right away, instead of |
| 1308 | * letting the failed packet sit and collect dust in the Tx buffer. This |
| 1309 | * is a much better solution as it avoids kernel based Tx timeouts, and |
| 1310 | * an unnecessary card reset. |
| 1311 | * |
| 1312 | * Called with lock held. |
| 1313 | */ |
| 1314 | |
| 1315 | static void ei_tx_err(struct net_device *dev) |
| 1316 | { |
| 1317 | long e8390_base = dev->base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1318 | unsigned char txsr = inb_p(e8390_base+EN0_TSR); |
| 1319 | unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU); |
| 1320 | |
| 1321 | #ifdef VERBOSE_ERROR_DUMP |
| 1322 | printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr); |
| 1323 | if (txsr & ENTSR_ABT) |
| 1324 | printk("excess-collisions "); |
| 1325 | if (txsr & ENTSR_ND) |
| 1326 | printk("non-deferral "); |
| 1327 | if (txsr & ENTSR_CRS) |
| 1328 | printk("lost-carrier "); |
| 1329 | if (txsr & ENTSR_FU) |
| 1330 | printk("FIFO-underrun "); |
| 1331 | if (txsr & ENTSR_CDH) |
| 1332 | printk("lost-heartbeat "); |
| 1333 | printk("\n"); |
| 1334 | #endif |
| 1335 | |
| 1336 | if (tx_was_aborted) |
| 1337 | ei_tx_intr(dev); |
| 1338 | else |
| 1339 | { |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1340 | dev->stats.tx_errors++; |
| 1341 | if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++; |
| 1342 | if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++; |
| 1343 | if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | } |
| 1345 | } |
| 1346 | |
| 1347 | /** |
| 1348 | * ei_tx_intr - transmit interrupt handler |
| 1349 | * @dev: network device for which tx intr is handled |
| 1350 | * |
| 1351 | * We have finished a transmit: check for errors and then trigger the next |
| 1352 | * packet to be sent. Called with lock held. |
| 1353 | */ |
| 1354 | |
| 1355 | static void ei_tx_intr(struct net_device *dev) |
| 1356 | { |
| 1357 | long e8390_base = dev->base_addr; |
| 1358 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| 1359 | int status = inb(e8390_base + EN0_TSR); |
| 1360 | |
| 1361 | /* |
| 1362 | * There are two Tx buffers, see which one finished, and trigger |
| 1363 | * the send of another one if it exists. |
| 1364 | */ |
| 1365 | ei_local->txqueue--; |
| 1366 | |
| 1367 | if (ei_local->tx1 < 0) |
| 1368 | { |
| 1369 | if (ei_local->lasttx != 1 && ei_local->lasttx != -1) |
| 1370 | printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n", |
| 1371 | ei_local->name, ei_local->lasttx, ei_local->tx1); |
| 1372 | ei_local->tx1 = 0; |
| 1373 | if (ei_local->tx2 > 0) |
| 1374 | { |
| 1375 | ei_local->txing = 1; |
| 1376 | NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6); |
| 1377 | dev->trans_start = jiffies; |
| 1378 | ei_local->tx2 = -1, |
| 1379 | ei_local->lasttx = 2; |
| 1380 | } |
| 1381 | else ei_local->lasttx = 20, ei_local->txing = 0; |
| 1382 | } |
| 1383 | else if (ei_local->tx2 < 0) |
| 1384 | { |
| 1385 | if (ei_local->lasttx != 2 && ei_local->lasttx != -2) |
| 1386 | printk("%s: bogus last_tx_buffer %d, tx2=%d.\n", |
| 1387 | ei_local->name, ei_local->lasttx, ei_local->tx2); |
| 1388 | ei_local->tx2 = 0; |
| 1389 | if (ei_local->tx1 > 0) |
| 1390 | { |
| 1391 | ei_local->txing = 1; |
| 1392 | NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page); |
| 1393 | dev->trans_start = jiffies; |
| 1394 | ei_local->tx1 = -1; |
| 1395 | ei_local->lasttx = 1; |
| 1396 | } |
| 1397 | else |
| 1398 | ei_local->lasttx = 10, ei_local->txing = 0; |
| 1399 | } |
| 1400 | // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n", |
| 1401 | // dev->name, ei_local->lasttx); |
| 1402 | |
| 1403 | /* Minimize Tx latency: update the statistics after we restart TXing. */ |
| 1404 | if (status & ENTSR_COL) |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1405 | dev->stats.collisions++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | if (status & ENTSR_PTX) |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1407 | dev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | else |
| 1409 | { |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1410 | dev->stats.tx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | if (status & ENTSR_ABT) |
| 1412 | { |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1413 | dev->stats.tx_aborted_errors++; |
| 1414 | dev->stats.collisions += 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | } |
| 1416 | if (status & ENTSR_CRS) |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1417 | dev->stats.tx_carrier_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | if (status & ENTSR_FU) |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1419 | dev->stats.tx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1420 | if (status & ENTSR_CDH) |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1421 | dev->stats.tx_heartbeat_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | if (status & ENTSR_OWC) |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1423 | dev->stats.tx_window_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | } |
| 1425 | netif_wake_queue(dev); |
| 1426 | } |
| 1427 | |
| 1428 | /** |
| 1429 | * ei_receive - receive some packets |
| 1430 | * @dev: network device with which receive will be run |
| 1431 | * |
| 1432 | * We have a good packet(s), get it/them out of the buffers. |
| 1433 | * Called with lock held. |
| 1434 | */ |
| 1435 | |
| 1436 | static void ei_receive(struct net_device *dev) |
| 1437 | { |
| 1438 | long e8390_base = dev->base_addr; |
| 1439 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| 1440 | unsigned char rxing_page, this_frame, next_frame; |
| 1441 | unsigned short current_offset; |
| 1442 | int rx_pkt_count = 0; |
| 1443 | struct e8390_pkt_hdr rx_frame; |
| 1444 | |
| 1445 | while (++rx_pkt_count < 10) |
| 1446 | { |
| 1447 | int pkt_len, pkt_stat; |
| 1448 | |
| 1449 | /* Get the rx page (incoming packet pointer). */ |
| 1450 | rxing_page = inb_p(e8390_base + EN1_CURPAG -1); |
| 1451 | |
| 1452 | /* Remove one frame from the ring. Boundary is always a page behind. */ |
| 1453 | this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1; |
| 1454 | if (this_frame >= ei_local->stop_page) |
| 1455 | this_frame = ei_local->rx_start_page; |
| 1456 | |
| 1457 | /* Someday we'll omit the previous, iff we never get this message. |
| 1458 | (There is at least one clone claimed to have a problem.) |
| 1459 | |
| 1460 | Keep quiet if it looks like a card removal. One problem here |
| 1461 | is that some clones crash in roughly the same way. |
| 1462 | */ |
| 1463 | if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF)) |
| 1464 | printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n", |
| 1465 | dev->name, this_frame, ei_local->current_page); |
| 1466 | |
| 1467 | if (this_frame == rxing_page) /* Read all the frames? */ |
| 1468 | break; /* Done for now */ |
| 1469 | |
| 1470 | current_offset = this_frame << 8; |
| 1471 | ei_get_8390_hdr(dev, &rx_frame, this_frame); |
| 1472 | |
| 1473 | pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr); |
| 1474 | pkt_stat = rx_frame.status; |
| 1475 | |
| 1476 | next_frame = this_frame + 1 + ((pkt_len+4)>>8); |
| 1477 | |
| 1478 | if (pkt_len < 60 || pkt_len > 1518) |
| 1479 | { |
| 1480 | if (ei_debug) |
| 1481 | printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n", |
| 1482 | dev->name, rx_frame.count, rx_frame.status, |
| 1483 | rx_frame.next); |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1484 | dev->stats.rx_errors++; |
| 1485 | dev->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1486 | } |
| 1487 | else if ((pkt_stat & 0x0F) == ENRSR_RXOK) |
| 1488 | { |
| 1489 | struct sk_buff *skb; |
| 1490 | |
| 1491 | skb = dev_alloc_skb(pkt_len+2); |
| 1492 | if (skb == NULL) |
| 1493 | { |
| 1494 | if (ei_debug > 1) |
| 1495 | printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n", |
| 1496 | dev->name, pkt_len); |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1497 | dev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | break; |
| 1499 | } |
| 1500 | else |
| 1501 | { |
| 1502 | skb_reserve(skb,2); /* IP headers on 16 byte boundaries */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1503 | skb_put(skb, pkt_len); /* Make room */ |
| 1504 | ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame)); |
| 1505 | skb->protocol=eth_type_trans(skb,dev); |
| 1506 | netif_rx(skb); |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1507 | dev->stats.rx_packets++; |
| 1508 | dev->stats.rx_bytes += pkt_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | if (pkt_stat & ENRSR_PHY) |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1510 | dev->stats.multicast++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | } |
| 1512 | } |
| 1513 | else |
| 1514 | { |
| 1515 | if (ei_debug) |
| 1516 | printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n", |
| 1517 | dev->name, rx_frame.status, rx_frame.next, |
| 1518 | rx_frame.count); |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1519 | dev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1520 | /* NB: The NIC counts CRC, frame and missed errors. */ |
| 1521 | if (pkt_stat & ENRSR_FO) |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1522 | dev->stats.rx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1523 | } |
| 1524 | next_frame = rx_frame.next; |
| 1525 | |
| 1526 | /* This _should_ never happen: it's here for avoiding bad clones. */ |
| 1527 | if (next_frame >= ei_local->stop_page) { |
| 1528 | printk("%s: next frame inconsistency, %#2x\n", dev->name, |
| 1529 | next_frame); |
| 1530 | next_frame = ei_local->rx_start_page; |
| 1531 | } |
| 1532 | ei_local->current_page = next_frame; |
| 1533 | outb_p(next_frame-1, e8390_base+EN0_BOUNDARY); |
| 1534 | } |
| 1535 | |
| 1536 | return; |
| 1537 | } |
| 1538 | |
| 1539 | /** |
| 1540 | * ei_rx_overrun - handle receiver overrun |
| 1541 | * @dev: network device which threw exception |
| 1542 | * |
| 1543 | * We have a receiver overrun: we have to kick the 8390 to get it started |
| 1544 | * again. Problem is that you have to kick it exactly as NS prescribes in |
| 1545 | * the updated datasheets, or "the NIC may act in an unpredictable manner." |
| 1546 | * This includes causing "the NIC to defer indefinitely when it is stopped |
| 1547 | * on a busy network." Ugh. |
| 1548 | * Called with lock held. Don't call this with the interrupts off or your |
| 1549 | * computer will hate you - it takes 10ms or so. |
| 1550 | */ |
| 1551 | |
| 1552 | static void ei_rx_overrun(struct net_device *dev) |
| 1553 | { |
Komuro | ff768cd | 2006-04-09 11:21:10 +0900 | [diff] [blame] | 1554 | axnet_dev_t *info = PRIV(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | long e8390_base = dev->base_addr; |
| 1556 | unsigned char was_txing, must_resend = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | |
| 1558 | /* |
| 1559 | * Record whether a Tx was in progress and then issue the |
| 1560 | * stop command. |
| 1561 | */ |
| 1562 | was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS; |
| 1563 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); |
| 1564 | |
| 1565 | if (ei_debug > 1) |
| 1566 | printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name); |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1567 | dev->stats.rx_over_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | |
| 1569 | /* |
| 1570 | * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total. |
| 1571 | * Early datasheets said to poll the reset bit, but now they say that |
| 1572 | * it "is not a reliable indicator and subsequently should be ignored." |
| 1573 | * We wait at least 10ms. |
| 1574 | */ |
| 1575 | |
| 1576 | mdelay(10); |
| 1577 | |
| 1578 | /* |
| 1579 | * Reset RBCR[01] back to zero as per magic incantation. |
| 1580 | */ |
| 1581 | outb_p(0x00, e8390_base+EN0_RCNTLO); |
| 1582 | outb_p(0x00, e8390_base+EN0_RCNTHI); |
| 1583 | |
| 1584 | /* |
| 1585 | * See if any Tx was interrupted or not. According to NS, this |
| 1586 | * step is vital, and skipping it will cause no end of havoc. |
| 1587 | */ |
| 1588 | |
| 1589 | if (was_txing) |
| 1590 | { |
| 1591 | unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR); |
| 1592 | if (!tx_completed) |
| 1593 | must_resend = 1; |
| 1594 | } |
| 1595 | |
| 1596 | /* |
| 1597 | * Have to enter loopback mode and then restart the NIC before |
| 1598 | * you are allowed to slurp packets up off the ring. |
| 1599 | */ |
| 1600 | outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); |
| 1601 | outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD); |
| 1602 | |
| 1603 | /* |
| 1604 | * Clear the Rx ring of all the debris, and ack the interrupt. |
| 1605 | */ |
| 1606 | ei_receive(dev); |
| 1607 | |
| 1608 | /* |
| 1609 | * Leave loopback mode, and resend any packet that got stopped. |
| 1610 | */ |
| 1611 | outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR); |
| 1612 | if (must_resend) |
| 1613 | outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD); |
| 1614 | } |
| 1615 | |
| 1616 | /* |
| 1617 | * Collect the stats. This is called unlocked and from several contexts. |
| 1618 | */ |
| 1619 | |
| 1620 | static struct net_device_stats *get_stats(struct net_device *dev) |
| 1621 | { |
| 1622 | long ioaddr = dev->base_addr; |
| 1623 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| 1624 | unsigned long flags; |
| 1625 | |
| 1626 | /* If the card is stopped, just return the present stats. */ |
| 1627 | if (!netif_running(dev)) |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1628 | return &dev->stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1629 | |
| 1630 | spin_lock_irqsave(&ei_local->page_lock,flags); |
| 1631 | /* Read the counter registers, assuming we are in page 0. */ |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1632 | dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0); |
| 1633 | dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1); |
| 1634 | dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1635 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
| 1636 | |
Paulius Zaleckas | 8e26916 | 2008-05-07 02:20:36 +0300 | [diff] [blame] | 1637 | return &dev->stats; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1638 | } |
| 1639 | |
Komuro | b8ab2dc | 2006-03-26 07:31:55 +0900 | [diff] [blame] | 1640 | /* |
| 1641 | * Form the 64 bit 8390 multicast table from the linked list of addresses |
| 1642 | * associated with this dev structure. |
| 1643 | */ |
| 1644 | |
| 1645 | static inline void make_mc_bits(u8 *bits, struct net_device *dev) |
| 1646 | { |
| 1647 | struct dev_mc_list *dmi; |
| 1648 | u32 crc; |
| 1649 | |
| 1650 | for (dmi=dev->mc_list; dmi; dmi=dmi->next) { |
| 1651 | |
| 1652 | crc = ether_crc(ETH_ALEN, dmi->dmi_addr); |
| 1653 | /* |
| 1654 | * The 8390 uses the 6 most significant bits of the |
| 1655 | * CRC to index the multicast table. |
| 1656 | */ |
| 1657 | bits[crc>>29] |= (1<<((crc>>26)&7)); |
| 1658 | } |
| 1659 | } |
| 1660 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1661 | /** |
| 1662 | * do_set_multicast_list - set/clear multicast filter |
| 1663 | * @dev: net device for which multicast filter is adjusted |
| 1664 | * |
Komuro | b8ab2dc | 2006-03-26 07:31:55 +0900 | [diff] [blame] | 1665 | * Set or clear the multicast filter for this adaptor. |
| 1666 | * Must be called with lock held. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | */ |
| 1668 | |
| 1669 | static void do_set_multicast_list(struct net_device *dev) |
| 1670 | { |
| 1671 | long e8390_base = dev->base_addr; |
Komuro | b8ab2dc | 2006-03-26 07:31:55 +0900 | [diff] [blame] | 1672 | int i; |
| 1673 | struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev); |
| 1674 | |
| 1675 | if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) { |
| 1676 | memset(ei_local->mcfilter, 0, 8); |
| 1677 | if (dev->mc_list) |
| 1678 | make_mc_bits(ei_local->mcfilter, dev); |
| 1679 | } else { |
| 1680 | /* set to accept-all */ |
| 1681 | memset(ei_local->mcfilter, 0xFF, 8); |
| 1682 | } |
| 1683 | |
Komuro | b8ab2dc | 2006-03-26 07:31:55 +0900 | [diff] [blame] | 1684 | outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD); |
| 1685 | for(i = 0; i < 8; i++) |
| 1686 | { |
| 1687 | outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i)); |
| 1688 | } |
| 1689 | outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1690 | |
| 1691 | if(dev->flags&IFF_PROMISC) |
| 1692 | outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR); |
| 1693 | else if(dev->flags&IFF_ALLMULTI || dev->mc_list) |
| 1694 | outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR); |
| 1695 | else |
| 1696 | outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); |
Komuro | f905703 | 2006-04-30 09:54:13 +0900 | [diff] [blame] | 1697 | |
| 1698 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1699 | } |
| 1700 | |
| 1701 | /* |
| 1702 | * Called without lock held. This is invoked from user context and may |
| 1703 | * be parallel to just about everything else. Its also fairly quick and |
| 1704 | * not called too often. Must protect against both bh and irq users |
| 1705 | */ |
| 1706 | |
| 1707 | static void set_multicast_list(struct net_device *dev) |
| 1708 | { |
| 1709 | unsigned long flags; |
| 1710 | |
| 1711 | spin_lock_irqsave(&dev_lock(dev), flags); |
| 1712 | do_set_multicast_list(dev); |
| 1713 | spin_unlock_irqrestore(&dev_lock(dev), flags); |
| 1714 | } |
| 1715 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1716 | /* This page of functions should be 8390 generic */ |
| 1717 | /* Follow National Semi's recommendations for initializing the "NIC". */ |
| 1718 | |
| 1719 | /** |
| 1720 | * AX88190_init - initialize 8390 hardware |
| 1721 | * @dev: network device to initialize |
| 1722 | * @startp: boolean. non-zero value to initiate chip processing |
| 1723 | * |
| 1724 | * Must be called with lock held. |
| 1725 | */ |
| 1726 | |
| 1727 | static void AX88190_init(struct net_device *dev, int startp) |
| 1728 | { |
| 1729 | axnet_dev_t *info = PRIV(dev); |
| 1730 | long e8390_base = dev->base_addr; |
| 1731 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| 1732 | int i; |
| 1733 | int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48; |
| 1734 | |
| 1735 | if(sizeof(struct e8390_pkt_hdr)!=4) |
| 1736 | panic("8390.c: header struct mispacked\n"); |
| 1737 | /* Follow National Semi's recommendations for initing the DP83902. */ |
| 1738 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */ |
| 1739 | outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */ |
| 1740 | /* Clear the remote byte count registers. */ |
| 1741 | outb_p(0x00, e8390_base + EN0_RCNTLO); |
| 1742 | outb_p(0x00, e8390_base + EN0_RCNTHI); |
| 1743 | /* Set to monitor and loopback mode -- this is vital!. */ |
| 1744 | outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */ |
| 1745 | outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */ |
| 1746 | /* Set the transmit page and receive ring. */ |
| 1747 | outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR); |
| 1748 | ei_local->tx1 = ei_local->tx2 = 0; |
| 1749 | outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG); |
| 1750 | outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/ |
| 1751 | ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */ |
| 1752 | outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG); |
| 1753 | /* Clear the pending interrupts and mask. */ |
| 1754 | outb_p(0xFF, e8390_base + EN0_ISR); |
| 1755 | outb_p(0x00, e8390_base + EN0_IMR); |
| 1756 | |
| 1757 | /* Copy the station address into the DS8390 registers. */ |
| 1758 | |
| 1759 | outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */ |
| 1760 | for(i = 0; i < 6; i++) |
| 1761 | { |
| 1762 | outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i)); |
| 1763 | if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i]) |
| 1764 | printk(KERN_ERR "Hw. address read/write mismap %d\n",i); |
| 1765 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1766 | |
| 1767 | outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG); |
| 1768 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); |
| 1769 | |
| 1770 | netif_start_queue(dev); |
| 1771 | ei_local->tx1 = ei_local->tx2 = 0; |
| 1772 | ei_local->txing = 0; |
| 1773 | |
Ken Kawasaki | ad3620a | 2009-04-04 14:49:07 +0000 | [diff] [blame] | 1774 | if (info->flags & IS_AX88790) /* select Internal PHY */ |
| 1775 | outb(0x10, e8390_base + AXNET_GPIO); |
| 1776 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1777 | if (startp) |
| 1778 | { |
| 1779 | outb_p(0xff, e8390_base + EN0_ISR); |
| 1780 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); |
| 1781 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD); |
| 1782 | outb_p(E8390_TXCONFIG | info->duplex_flag, |
| 1783 | e8390_base + EN0_TXCR); /* xmit on. */ |
| 1784 | /* 3c503 TechMan says rxconfig only after the NIC is started. */ |
| 1785 | outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */ |
| 1786 | do_set_multicast_list(dev); /* (re)load the mcast table */ |
| 1787 | } |
| 1788 | } |
| 1789 | |
| 1790 | /* Trigger a transmit start, assuming the length is valid. |
| 1791 | Always called with the page lock held */ |
| 1792 | |
| 1793 | static void NS8390_trigger_send(struct net_device *dev, unsigned int length, |
| 1794 | int start_page) |
| 1795 | { |
| 1796 | long e8390_base = dev->base_addr; |
| 1797 | struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev); |
| 1798 | |
| 1799 | if (inb_p(e8390_base) & E8390_TRANS) |
| 1800 | { |
| 1801 | printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n", |
| 1802 | dev->name); |
| 1803 | return; |
| 1804 | } |
| 1805 | outb_p(length & 0xff, e8390_base + EN0_TCNTLO); |
| 1806 | outb_p(length >> 8, e8390_base + EN0_TCNTHI); |
| 1807 | outb_p(start_page, e8390_base + EN0_TPSR); |
| 1808 | outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD); |
| 1809 | } |