Commit | Line | Data |
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1da177e4 LT |
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 | ||
636b8116 JP |
27 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
28 | ||
1da177e4 LT |
29 | #include <linux/kernel.h> |
30 | #include <linux/module.h> | |
31 | #include <linux/init.h> | |
32 | #include <linux/ptrace.h> | |
1da177e4 LT |
33 | #include <linux/string.h> |
34 | #include <linux/timer.h> | |
35 | #include <linux/delay.h> | |
36 | #include <linux/spinlock.h> | |
1da177e4 | 37 | #include <linux/netdevice.h> |
3dd20516 | 38 | #include <linux/etherdevice.h> |
b8ab2dc3 | 39 | #include <linux/crc32.h> |
0fa0ee05 | 40 | #include <linux/mii.h> |
644570b8 | 41 | #include "8390.h" |
1da177e4 | 42 | |
1da177e4 LT |
43 | #include <pcmcia/cistpl.h> |
44 | #include <pcmcia/ciscode.h> | |
45 | #include <pcmcia/ds.h> | |
46 | #include <pcmcia/cisreg.h> | |
47 | ||
48 | #include <asm/io.h> | |
1da177e4 LT |
49 | #include <asm/byteorder.h> |
50 | #include <asm/uaccess.h> | |
51 | ||
52 | #define AXNET_CMD 0x00 | |
53 | #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */ | |
54 | #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */ | |
55 | #define AXNET_MII_EEP 0x14 /* Offset of MII access port */ | |
56 | #define AXNET_TEST 0x15 /* Offset of TEST Register port */ | |
57 | #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */ | |
58 | ||
59 | #define AXNET_START_PG 0x40 /* First page of TX buffer */ | |
60 | #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */ | |
61 | ||
62 | #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */ | |
63 | ||
64 | #define IS_AX88190 0x0001 | |
65 | #define IS_AX88790 0x0002 | |
66 | ||
67 | /*====================================================================*/ | |
68 | ||
69 | /* Module parameters */ | |
70 | ||
71 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
72 | MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver"); | |
73 | MODULE_LICENSE("GPL"); | |
74 | ||
1da177e4 LT |
75 | |
76 | /*====================================================================*/ | |
77 | ||
15b99ac1 | 78 | static int axnet_config(struct pcmcia_device *link); |
fba395ee | 79 | static void axnet_release(struct pcmcia_device *link); |
1da177e4 LT |
80 | static int axnet_open(struct net_device *dev); |
81 | static int axnet_close(struct net_device *dev); | |
82 | static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
dbf02fae SH |
83 | static netdev_tx_t axnet_start_xmit(struct sk_buff *skb, |
84 | struct net_device *dev); | |
3dd20516 SH |
85 | static struct net_device_stats *get_stats(struct net_device *dev); |
86 | static void set_multicast_list(struct net_device *dev); | |
87 | static void axnet_tx_timeout(struct net_device *dev); | |
7d12e780 | 88 | static irqreturn_t ei_irq_wrapper(int irq, void *dev_id); |
1da177e4 LT |
89 | static void ei_watchdog(u_long arg); |
90 | static void axnet_reset_8390(struct net_device *dev); | |
91 | ||
906da809 OJ |
92 | static int mdio_read(unsigned int addr, int phy_id, int loc); |
93 | static void mdio_write(unsigned int addr, int phy_id, int loc, int value); | |
1da177e4 LT |
94 | |
95 | static void get_8390_hdr(struct net_device *, | |
96 | struct e8390_pkt_hdr *, int); | |
97 | static void block_input(struct net_device *dev, int count, | |
98 | struct sk_buff *skb, int ring_offset); | |
99 | static void block_output(struct net_device *dev, int count, | |
100 | const u_char *buf, const int start_page); | |
101 | ||
cc3b4866 | 102 | static void axnet_detach(struct pcmcia_device *p_dev); |
1da177e4 | 103 | |
1da177e4 LT |
104 | static void AX88190_init(struct net_device *dev, int startp); |
105 | static int ax_open(struct net_device *dev); | |
106 | static int ax_close(struct net_device *dev); | |
7d12e780 | 107 | static irqreturn_t ax_interrupt(int irq, void *dev_id); |
c45f812f | 108 | static u32 axnet_msg_enable; |
1da177e4 LT |
109 | |
110 | /*====================================================================*/ | |
111 | ||
112 | typedef struct axnet_dev_t { | |
fd238232 | 113 | struct pcmcia_device *p_dev; |
19c0ef6b KK |
114 | caddr_t base; |
115 | struct timer_list watchdog; | |
116 | int stale, fast_poll; | |
117 | u_short link_status; | |
118 | u_char duplex_flag; | |
119 | int phy_id; | |
120 | int flags; | |
121 | int active_low; | |
1da177e4 LT |
122 | } axnet_dev_t; |
123 | ||
124 | static inline axnet_dev_t *PRIV(struct net_device *dev) | |
125 | { | |
126 | void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device); | |
127 | return p; | |
128 | } | |
129 | ||
3dd20516 SH |
130 | static const struct net_device_ops axnet_netdev_ops = { |
131 | .ndo_open = axnet_open, | |
132 | .ndo_stop = axnet_close, | |
133 | .ndo_do_ioctl = axnet_ioctl, | |
134 | .ndo_start_xmit = axnet_start_xmit, | |
135 | .ndo_tx_timeout = axnet_tx_timeout, | |
136 | .ndo_get_stats = get_stats, | |
afc4b13d | 137 | .ndo_set_rx_mode = set_multicast_list, |
3dd20516 SH |
138 | .ndo_change_mtu = eth_change_mtu, |
139 | .ndo_set_mac_address = eth_mac_addr, | |
140 | .ndo_validate_addr = eth_validate_addr, | |
141 | }; | |
142 | ||
15b99ac1 | 143 | static int axnet_probe(struct pcmcia_device *link) |
1da177e4 LT |
144 | { |
145 | axnet_dev_t *info; | |
1da177e4 | 146 | struct net_device *dev; |
3dd20516 | 147 | struct ei_device *ei_local; |
1da177e4 | 148 | |
dd0fab5b | 149 | dev_dbg(&link->dev, "axnet_attach()\n"); |
1da177e4 | 150 | |
3dd20516 | 151 | dev = alloc_etherdev(sizeof(struct ei_device) + sizeof(axnet_dev_t)); |
1da177e4 | 152 | if (!dev) |
f8cfa618 | 153 | return -ENOMEM; |
1da177e4 | 154 | |
3dd20516 | 155 | ei_local = netdev_priv(dev); |
c45f812f | 156 | ei_local->msg_enable = axnet_msg_enable; |
3dd20516 SH |
157 | spin_lock_init(&ei_local->page_lock); |
158 | ||
1da177e4 | 159 | info = PRIV(dev); |
fba395ee | 160 | info->p_dev = link; |
1da177e4 | 161 | link->priv = dev; |
1ac71e5a | 162 | link->config_flags |= CONF_ENABLE_IRQ; |
1da177e4 | 163 | |
3dd20516 SH |
164 | dev->netdev_ops = &axnet_netdev_ops; |
165 | ||
3dd20516 | 166 | dev->watchdog_timeo = TX_TIMEOUT; |
1da177e4 | 167 | |
15b99ac1 | 168 | return axnet_config(link); |
1da177e4 LT |
169 | } /* axnet_attach */ |
170 | ||
fba395ee | 171 | static void axnet_detach(struct pcmcia_device *link) |
1da177e4 LT |
172 | { |
173 | struct net_device *dev = link->priv; | |
1da177e4 | 174 | |
dd0fab5b | 175 | dev_dbg(&link->dev, "axnet_detach(0x%p)\n", link); |
1da177e4 | 176 | |
c7c2fa07 | 177 | unregister_netdev(dev); |
1da177e4 | 178 | |
e2d40963 | 179 | axnet_release(link); |
1da177e4 | 180 | |
1da177e4 LT |
181 | free_netdev(dev); |
182 | } /* axnet_detach */ | |
183 | ||
184 | /*====================================================================== | |
185 | ||
186 | This probes for a card's hardware address by reading the PROM. | |
187 | ||
188 | ======================================================================*/ | |
189 | ||
fba395ee | 190 | static int get_prom(struct pcmcia_device *link) |
1da177e4 LT |
191 | { |
192 | struct net_device *dev = link->priv; | |
906da809 | 193 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
194 | int i, j; |
195 | ||
3396c782 | 196 | /* This is based on drivers/net/ethernet/8390/ne.c */ |
1da177e4 LT |
197 | struct { |
198 | u_char value, offset; | |
199 | } program_seq[] = { | |
200 | {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/ | |
201 | {0x01, EN0_DCFG}, /* Set word-wide access. */ | |
202 | {0x00, EN0_RCNTLO}, /* Clear the count regs. */ | |
203 | {0x00, EN0_RCNTHI}, | |
204 | {0x00, EN0_IMR}, /* Mask completion irq. */ | |
205 | {0xFF, EN0_ISR}, | |
206 | {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */ | |
207 | {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ | |
208 | {0x10, EN0_RCNTLO}, | |
209 | {0x00, EN0_RCNTHI}, | |
210 | {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */ | |
211 | {0x04, EN0_RSARHI}, | |
212 | {E8390_RREAD+E8390_START, E8390_CMD}, | |
213 | }; | |
214 | ||
215 | /* Not much of a test, but the alternatives are messy */ | |
7feabb64 | 216 | if (link->config_base != 0x03c0) |
1da177e4 LT |
217 | return 0; |
218 | ||
219 | axnet_reset_8390(dev); | |
220 | mdelay(10); | |
221 | ||
ff8ac609 | 222 | for (i = 0; i < ARRAY_SIZE(program_seq); i++) |
1da177e4 LT |
223 | outb_p(program_seq[i].value, ioaddr + program_seq[i].offset); |
224 | ||
225 | for (i = 0; i < 6; i += 2) { | |
226 | j = inw(ioaddr + AXNET_DATAPORT); | |
227 | dev->dev_addr[i] = j & 0xff; | |
228 | dev->dev_addr[i+1] = j >> 8; | |
229 | } | |
230 | return 1; | |
231 | } /* get_prom */ | |
232 | ||
fba395ee | 233 | static int try_io_port(struct pcmcia_device *link) |
1da177e4 LT |
234 | { |
235 | int j, ret; | |
90abdc3b DB |
236 | link->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
237 | link->resource[1]->flags &= ~IO_DATA_PATH_WIDTH; | |
238 | if (link->resource[0]->end == 32) { | |
239 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; | |
eb14120f | 240 | /* for master/slave multifunction cards */ |
90abdc3b DB |
241 | if (link->resource[1]->end > 0) |
242 | link->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; | |
1da177e4 LT |
243 | } else { |
244 | /* This should be two 16-port windows */ | |
90abdc3b DB |
245 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; |
246 | link->resource[1]->flags |= IO_DATA_PATH_WIDTH_16; | |
1da177e4 | 247 | } |
90abdc3b | 248 | if (link->resource[0]->start == 0) { |
1da177e4 | 249 | for (j = 0; j < 0x400; j += 0x20) { |
90abdc3b DB |
250 | link->resource[0]->start = j ^ 0x300; |
251 | link->resource[1]->start = (j ^ 0x300) + 0x10; | |
252 | link->io_lines = 16; | |
253 | ret = pcmcia_request_io(link); | |
4c89e88b DB |
254 | if (ret == 0) |
255 | return ret; | |
1da177e4 LT |
256 | } |
257 | return ret; | |
258 | } else { | |
90abdc3b | 259 | return pcmcia_request_io(link); |
1da177e4 LT |
260 | } |
261 | } | |
262 | ||
00990e7c | 263 | static int axnet_configcheck(struct pcmcia_device *p_dev, void *priv_data) |
b54bf94b | 264 | { |
00990e7c DB |
265 | if (p_dev->config_index == 0) |
266 | return -EINVAL; | |
b54bf94b | 267 | |
7feabb64 | 268 | p_dev->config_index = 0x05; |
00990e7c DB |
269 | if (p_dev->resource[0]->end + p_dev->resource[1]->end < 32) |
270 | return -ENODEV; | |
b54bf94b | 271 | |
00990e7c | 272 | return try_io_port(p_dev); |
b54bf94b DB |
273 | } |
274 | ||
15b99ac1 | 275 | static int axnet_config(struct pcmcia_device *link) |
1da177e4 | 276 | { |
1da177e4 LT |
277 | struct net_device *dev = link->priv; |
278 | axnet_dev_t *info = PRIV(dev); | |
dd0fab5b | 279 | int i, j, j2, ret; |
1da177e4 | 280 | |
dd0fab5b | 281 | dev_dbg(&link->dev, "axnet_config(0x%p)\n", link); |
1da177e4 | 282 | |
1da177e4 | 283 | /* don't trust the CIS on this; Linksys got it wrong */ |
7feabb64 | 284 | link->config_regs = 0x63; |
00990e7c | 285 | link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; |
dd0fab5b DB |
286 | ret = pcmcia_loop_config(link, axnet_configcheck, NULL); |
287 | if (ret != 0) | |
1da177e4 | 288 | goto failed; |
1da177e4 | 289 | |
eb14120f | 290 | if (!link->irq) |
dd0fab5b | 291 | goto failed; |
1ac71e5a | 292 | |
fc301101 | 293 | if (resource_size(link->resource[1]) == 8) |
1ac71e5a | 294 | link->config_flags |= CONF_ENABLE_SPKR; |
1da177e4 | 295 | |
1ac71e5a | 296 | ret = pcmcia_enable_device(link); |
dd0fab5b DB |
297 | if (ret) |
298 | goto failed; | |
299 | ||
eb14120f | 300 | dev->irq = link->irq; |
9a017a91 | 301 | dev->base_addr = link->resource[0]->start; |
1da177e4 LT |
302 | |
303 | if (!get_prom(link)) { | |
636b8116 JP |
304 | pr_notice("this is not an AX88190 card!\n"); |
305 | pr_notice("use pcnet_cs instead.\n"); | |
1da177e4 LT |
306 | goto failed; |
307 | } | |
308 | ||
309 | ei_status.name = "AX88190"; | |
310 | ei_status.word16 = 1; | |
311 | ei_status.tx_start_page = AXNET_START_PG; | |
312 | ei_status.rx_start_page = AXNET_START_PG + TX_PAGES; | |
313 | ei_status.stop_page = AXNET_STOP_PG; | |
c061b18d JP |
314 | ei_status.reset_8390 = axnet_reset_8390; |
315 | ei_status.get_8390_hdr = get_8390_hdr; | |
316 | ei_status.block_input = block_input; | |
317 | ei_status.block_output = block_output; | |
1da177e4 LT |
318 | |
319 | if (inb(dev->base_addr + AXNET_TEST) != 0) | |
320 | info->flags |= IS_AX88790; | |
321 | else | |
322 | info->flags |= IS_AX88190; | |
323 | ||
324 | if (info->flags & IS_AX88790) | |
325 | outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */ | |
326 | ||
19c0ef6b KK |
327 | info->active_low = 0; |
328 | ||
1da177e4 LT |
329 | for (i = 0; i < 32; i++) { |
330 | j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1); | |
ad3620a0 KK |
331 | j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2); |
332 | if (j == j2) continue; | |
1da177e4 LT |
333 | if ((j != 0) && (j != 0xffff)) break; |
334 | } | |
335 | ||
1da177e4 | 336 | if (i == 32) { |
19c0ef6b KK |
337 | /* Maybe PHY is in power down mode. (PPD_SET = 1) |
338 | Bit 2 of CCSR is active low. */ | |
1d5cc192 | 339 | pcmcia_write_config_byte(link, CISREG_CCSR, 0x04); |
1da177e4 LT |
340 | for (i = 0; i < 32; i++) { |
341 | j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1); | |
ad3620a0 KK |
342 | j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2); |
343 | if (j == j2) continue; | |
19c0ef6b KK |
344 | if ((j != 0) && (j != 0xffff)) { |
345 | info->active_low = 1; | |
346 | break; | |
347 | } | |
1da177e4 LT |
348 | } |
349 | } | |
350 | ||
351 | info->phy_id = (i < 32) ? i : -1; | |
dd2e5a15 | 352 | SET_NETDEV_DEV(dev, &link->dev); |
1da177e4 LT |
353 | |
354 | if (register_netdev(dev) != 0) { | |
636b8116 | 355 | pr_notice("register_netdev() failed\n"); |
1da177e4 LT |
356 | goto failed; |
357 | } | |
358 | ||
636b8116 JP |
359 | netdev_info(dev, "Asix AX88%d90: io %#3lx, irq %d, hw_addr %pM\n", |
360 | ((info->flags & IS_AX88790) ? 7 : 1), | |
361 | dev->base_addr, dev->irq, dev->dev_addr); | |
1da177e4 | 362 | if (info->phy_id != -1) { |
636b8116 JP |
363 | netdev_dbg(dev, " MII transceiver at index %d, status %x\n", |
364 | info->phy_id, j); | |
1da177e4 | 365 | } else { |
636b8116 | 366 | netdev_notice(dev, " No MII transceivers found!\n"); |
1da177e4 | 367 | } |
15b99ac1 | 368 | return 0; |
1da177e4 | 369 | |
1da177e4 LT |
370 | failed: |
371 | axnet_release(link); | |
15b99ac1 | 372 | return -ENODEV; |
1da177e4 LT |
373 | } /* axnet_config */ |
374 | ||
fba395ee | 375 | static void axnet_release(struct pcmcia_device *link) |
1da177e4 | 376 | { |
fba395ee | 377 | pcmcia_disable_device(link); |
1da177e4 LT |
378 | } |
379 | ||
fba395ee | 380 | static int axnet_suspend(struct pcmcia_device *link) |
98e4c28b | 381 | { |
98e4c28b DB |
382 | struct net_device *dev = link->priv; |
383 | ||
e2d40963 DB |
384 | if (link->open) |
385 | netif_device_detach(dev); | |
98e4c28b DB |
386 | |
387 | return 0; | |
388 | } | |
389 | ||
fba395ee | 390 | static int axnet_resume(struct pcmcia_device *link) |
98e4c28b | 391 | { |
98e4c28b | 392 | struct net_device *dev = link->priv; |
19c0ef6b | 393 | axnet_dev_t *info = PRIV(dev); |
98e4c28b | 394 | |
e2d40963 | 395 | if (link->open) { |
19c0ef6b KK |
396 | if (info->active_low == 1) |
397 | pcmcia_write_config_byte(link, CISREG_CCSR, 0x04); | |
398 | ||
8661bb5b DB |
399 | axnet_reset_8390(dev); |
400 | AX88190_init(dev, 1); | |
401 | netif_device_attach(dev); | |
98e4c28b DB |
402 | } |
403 | ||
404 | return 0; | |
405 | } | |
406 | ||
407 | ||
1da177e4 LT |
408 | /*====================================================================== |
409 | ||
410 | MII interface support | |
411 | ||
412 | ======================================================================*/ | |
413 | ||
414 | #define MDIO_SHIFT_CLK 0x01 | |
415 | #define MDIO_DATA_WRITE0 0x00 | |
416 | #define MDIO_DATA_WRITE1 0x08 | |
417 | #define MDIO_DATA_READ 0x04 | |
418 | #define MDIO_MASK 0x0f | |
419 | #define MDIO_ENB_IN 0x02 | |
420 | ||
906da809 | 421 | static void mdio_sync(unsigned int addr) |
1da177e4 LT |
422 | { |
423 | int bits; | |
424 | for (bits = 0; bits < 32; bits++) { | |
425 | outb_p(MDIO_DATA_WRITE1, addr); | |
426 | outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr); | |
427 | } | |
428 | } | |
429 | ||
906da809 | 430 | static int mdio_read(unsigned int addr, int phy_id, int loc) |
1da177e4 LT |
431 | { |
432 | u_int cmd = (0xf6<<10)|(phy_id<<5)|loc; | |
433 | int i, retval = 0; | |
434 | ||
435 | mdio_sync(addr); | |
436 | for (i = 14; i >= 0; i--) { | |
437 | int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; | |
438 | outb_p(dat, addr); | |
439 | outb_p(dat | MDIO_SHIFT_CLK, addr); | |
440 | } | |
441 | for (i = 19; i > 0; i--) { | |
442 | outb_p(MDIO_ENB_IN, addr); | |
443 | retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0); | |
444 | outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr); | |
445 | } | |
446 | return (retval>>1) & 0xffff; | |
447 | } | |
448 | ||
906da809 | 449 | static void mdio_write(unsigned int addr, int phy_id, int loc, int value) |
1da177e4 LT |
450 | { |
451 | u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value; | |
452 | int i; | |
453 | ||
454 | mdio_sync(addr); | |
455 | for (i = 31; i >= 0; i--) { | |
456 | int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; | |
457 | outb_p(dat, addr); | |
458 | outb_p(dat | MDIO_SHIFT_CLK, addr); | |
459 | } | |
460 | for (i = 1; i >= 0; i--) { | |
461 | outb_p(MDIO_ENB_IN, addr); | |
462 | outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr); | |
463 | } | |
464 | } | |
465 | ||
466 | /*====================================================================*/ | |
467 | ||
468 | static int axnet_open(struct net_device *dev) | |
469 | { | |
59b34c12 | 470 | int ret; |
1da177e4 | 471 | axnet_dev_t *info = PRIV(dev); |
fba395ee | 472 | struct pcmcia_device *link = info->p_dev; |
54299ef7 | 473 | unsigned int nic_base = dev->base_addr; |
1da177e4 | 474 | |
dd0fab5b | 475 | dev_dbg(&link->dev, "axnet_open('%s')\n", dev->name); |
1da177e4 | 476 | |
9940ec36 | 477 | if (!pcmcia_dev_present(link)) |
1da177e4 LT |
478 | return -ENODEV; |
479 | ||
54299ef7 | 480 | outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */ |
59b34c12 YY |
481 | ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev); |
482 | if (ret) | |
483 | return ret; | |
1da177e4 | 484 | |
59b34c12 | 485 | link->open++; |
1da177e4 LT |
486 | |
487 | info->link_status = 0x00; | |
488 | init_timer(&info->watchdog); | |
c061b18d | 489 | info->watchdog.function = ei_watchdog; |
1da177e4 LT |
490 | info->watchdog.data = (u_long)dev; |
491 | info->watchdog.expires = jiffies + HZ; | |
492 | add_timer(&info->watchdog); | |
493 | ||
494 | return ax_open(dev); | |
495 | } /* axnet_open */ | |
496 | ||
497 | /*====================================================================*/ | |
498 | ||
499 | static int axnet_close(struct net_device *dev) | |
500 | { | |
501 | axnet_dev_t *info = PRIV(dev); | |
fba395ee | 502 | struct pcmcia_device *link = info->p_dev; |
1da177e4 | 503 | |
dd0fab5b | 504 | dev_dbg(&link->dev, "axnet_close('%s')\n", dev->name); |
1da177e4 LT |
505 | |
506 | ax_close(dev); | |
507 | free_irq(dev->irq, dev); | |
508 | ||
509 | link->open--; | |
510 | netif_stop_queue(dev); | |
511 | del_timer_sync(&info->watchdog); | |
512 | ||
513 | return 0; | |
514 | } /* axnet_close */ | |
515 | ||
516 | /*====================================================================== | |
517 | ||
518 | Hard reset the card. This used to pause for the same period that | |
519 | a 8390 reset command required, but that shouldn't be necessary. | |
520 | ||
521 | ======================================================================*/ | |
522 | ||
523 | static void axnet_reset_8390(struct net_device *dev) | |
524 | { | |
906da809 | 525 | unsigned int nic_base = dev->base_addr; |
1da177e4 LT |
526 | int i; |
527 | ||
528 | ei_status.txing = ei_status.dmaing = 0; | |
529 | ||
530 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD); | |
531 | ||
532 | outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET); | |
533 | ||
534 | for (i = 0; i < 100; i++) { | |
535 | if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0) | |
536 | break; | |
537 | udelay(100); | |
538 | } | |
539 | outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */ | |
540 | ||
541 | if (i == 100) | |
636b8116 | 542 | netdev_err(dev, "axnet_reset_8390() did not complete\n"); |
1da177e4 LT |
543 | |
544 | } /* axnet_reset_8390 */ | |
545 | ||
546 | /*====================================================================*/ | |
547 | ||
7d12e780 | 548 | static irqreturn_t ei_irq_wrapper(int irq, void *dev_id) |
1da177e4 LT |
549 | { |
550 | struct net_device *dev = dev_id; | |
551 | PRIV(dev)->stale = 0; | |
7d12e780 | 552 | return ax_interrupt(irq, dev_id); |
1da177e4 LT |
553 | } |
554 | ||
555 | static void ei_watchdog(u_long arg) | |
556 | { | |
557 | struct net_device *dev = (struct net_device *)(arg); | |
558 | axnet_dev_t *info = PRIV(dev); | |
906da809 OJ |
559 | unsigned int nic_base = dev->base_addr; |
560 | unsigned int mii_addr = nic_base + AXNET_MII_EEP; | |
1da177e4 LT |
561 | u_short link; |
562 | ||
563 | if (!netif_device_present(dev)) goto reschedule; | |
564 | ||
565 | /* Check for pending interrupt with expired latency timer: with | |
566 | this, we can limp along even if the interrupt is blocked */ | |
567 | if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) { | |
568 | if (!info->fast_poll) | |
636b8116 | 569 | netdev_info(dev, "interrupt(s) dropped!\n"); |
7d12e780 | 570 | ei_irq_wrapper(dev->irq, dev); |
1da177e4 LT |
571 | info->fast_poll = HZ; |
572 | } | |
573 | if (info->fast_poll) { | |
574 | info->fast_poll--; | |
575 | info->watchdog.expires = jiffies + 1; | |
576 | add_timer(&info->watchdog); | |
577 | return; | |
578 | } | |
579 | ||
580 | if (info->phy_id < 0) | |
581 | goto reschedule; | |
582 | link = mdio_read(mii_addr, info->phy_id, 1); | |
583 | if (!link || (link == 0xffff)) { | |
636b8116 | 584 | netdev_info(dev, "MII is missing!\n"); |
1da177e4 LT |
585 | info->phy_id = -1; |
586 | goto reschedule; | |
587 | } | |
588 | ||
589 | link &= 0x0004; | |
590 | if (link != info->link_status) { | |
591 | u_short p = mdio_read(mii_addr, info->phy_id, 5); | |
636b8116 | 592 | netdev_info(dev, "%s link beat\n", link ? "found" : "lost"); |
1da177e4 LT |
593 | if (link) { |
594 | info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00; | |
595 | if (p) | |
636b8116 JP |
596 | netdev_info(dev, "autonegotiation complete: %dbaseT-%cD selected\n", |
597 | (p & 0x0180) ? 100 : 10, (p & 0x0140) ? 'F' : 'H'); | |
1da177e4 | 598 | else |
636b8116 | 599 | netdev_info(dev, "link partner did not autonegotiate\n"); |
1da177e4 LT |
600 | AX88190_init(dev, 1); |
601 | } | |
602 | info->link_status = link; | |
603 | } | |
604 | ||
605 | reschedule: | |
606 | info->watchdog.expires = jiffies + HZ; | |
607 | add_timer(&info->watchdog); | |
608 | } | |
609 | ||
1da177e4 LT |
610 | /*====================================================================*/ |
611 | ||
612 | static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
613 | { | |
614 | axnet_dev_t *info = PRIV(dev); | |
0fa0ee05 | 615 | struct mii_ioctl_data *data = if_mii(rq); |
906da809 | 616 | unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP; |
1da177e4 LT |
617 | switch (cmd) { |
618 | case SIOCGMIIPHY: | |
0fa0ee05 | 619 | data->phy_id = info->phy_id; |
1da177e4 | 620 | case SIOCGMIIREG: /* Read MII PHY register. */ |
0fa0ee05 | 621 | data->val_out = mdio_read(mii_addr, data->phy_id, data->reg_num & 0x1f); |
1da177e4 LT |
622 | return 0; |
623 | case SIOCSMIIREG: /* Write MII PHY register. */ | |
0fa0ee05 | 624 | mdio_write(mii_addr, data->phy_id, data->reg_num & 0x1f, data->val_in); |
1da177e4 LT |
625 | return 0; |
626 | } | |
627 | return -EOPNOTSUPP; | |
628 | } | |
629 | ||
630 | /*====================================================================*/ | |
631 | ||
632 | static void get_8390_hdr(struct net_device *dev, | |
633 | struct e8390_pkt_hdr *hdr, | |
634 | int ring_page) | |
635 | { | |
906da809 | 636 | unsigned int nic_base = dev->base_addr; |
1da177e4 LT |
637 | |
638 | outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */ | |
639 | outb_p(ring_page, nic_base + EN0_RSARHI); | |
640 | outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD); | |
641 | ||
642 | insw(nic_base + AXNET_DATAPORT, hdr, | |
643 | sizeof(struct e8390_pkt_hdr)>>1); | |
644 | /* Fix for big endian systems */ | |
645 | hdr->count = le16_to_cpu(hdr->count); | |
646 | ||
647 | } | |
648 | ||
649 | /*====================================================================*/ | |
650 | ||
651 | static void block_input(struct net_device *dev, int count, | |
652 | struct sk_buff *skb, int ring_offset) | |
653 | { | |
906da809 | 654 | unsigned int nic_base = dev->base_addr; |
c45f812f | 655 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 LT |
656 | int xfer_count = count; |
657 | char *buf = skb->data; | |
658 | ||
c45f812f MW |
659 | if ((netif_msg_rx_status(ei_local)) && (count != 4)) |
660 | netdev_dbg(dev, "[bi=%d]\n", count+4); | |
1da177e4 LT |
661 | outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO); |
662 | outb_p(ring_offset >> 8, nic_base + EN0_RSARHI); | |
663 | outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD); | |
664 | ||
665 | insw(nic_base + AXNET_DATAPORT,buf,count>>1); | |
666 | if (count & 0x01) | |
667 | buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++; | |
668 | ||
669 | } | |
670 | ||
671 | /*====================================================================*/ | |
672 | ||
673 | static void block_output(struct net_device *dev, int count, | |
674 | const u_char *buf, const int start_page) | |
675 | { | |
906da809 | 676 | unsigned int nic_base = dev->base_addr; |
1da177e4 | 677 | |
dd0fab5b | 678 | pr_debug("%s: [bo=%d]\n", dev->name, count); |
1da177e4 LT |
679 | |
680 | /* Round the count up for word writes. Do we need to do this? | |
681 | What effect will an odd byte count have on the 8390? | |
682 | I should check someday. */ | |
683 | if (count & 0x01) | |
684 | count++; | |
685 | ||
686 | outb_p(0x00, nic_base + EN0_RSARLO); | |
687 | outb_p(start_page, nic_base + EN0_RSARHI); | |
688 | outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD); | |
689 | outsw(nic_base + AXNET_DATAPORT, buf, count>>1); | |
690 | } | |
691 | ||
25f8f54f | 692 | static const struct pcmcia_device_id axnet_ids[] = { |
c414f755 DB |
693 | PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081), |
694 | PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301), | |
42dccd1f | 695 | PCMCIA_DEVICE_MANF_CARD(0x01bf, 0x2328), |
c414f755 DB |
696 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301), |
697 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303), | |
698 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309), | |
699 | PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106), | |
700 | PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab), | |
c67eebd6 | 701 | PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202), |
dad8c737 | 702 | PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090), |
2fe22a8b | 703 | PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc), |
c414f755 DB |
704 | PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef), |
705 | PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef), | |
706 | PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1), | |
707 | PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc), | |
708 | PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b), | |
709 | PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5), | |
710 | PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e), | |
60bbc725 | 711 | PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXM", 0x5261440f, 0x3abbd061), |
c414f755 | 712 | PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90), |
2dcc9ff7 | 713 | PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2), |
c414f755 DB |
714 | PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8), |
715 | PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609), | |
208fbec5 | 716 | PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875), |
c414f755 DB |
717 | PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04), |
718 | PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116), | |
719 | PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058), | |
720 | PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef), | |
c414f755 DB |
721 | PCMCIA_DEVICE_NULL, |
722 | }; | |
723 | MODULE_DEVICE_TABLE(pcmcia, axnet_ids); | |
724 | ||
1da177e4 LT |
725 | static struct pcmcia_driver axnet_cs_driver = { |
726 | .owner = THIS_MODULE, | |
2e9b981a | 727 | .name = "axnet_cs", |
15b99ac1 | 728 | .probe = axnet_probe, |
cc3b4866 | 729 | .remove = axnet_detach, |
c414f755 | 730 | .id_table = axnet_ids, |
98e4c28b DB |
731 | .suspend = axnet_suspend, |
732 | .resume = axnet_resume, | |
1da177e4 | 733 | }; |
fdd3f29e | 734 | module_pcmcia_driver(axnet_cs_driver); |
1da177e4 LT |
735 | |
736 | /*====================================================================*/ | |
737 | ||
738 | /* 8390.c: A general NS8390 ethernet driver core for linux. */ | |
739 | /* | |
740 | Written 1992-94 by Donald Becker. | |
741 | ||
742 | Copyright 1993 United States Government as represented by the | |
743 | Director, National Security Agency. | |
744 | ||
745 | This software may be used and distributed according to the terms | |
746 | of the GNU General Public License, incorporated herein by reference. | |
747 | ||
748 | The author may be reached as becker@scyld.com, or C/O | |
749 | Scyld Computing Corporation | |
750 | 410 Severn Ave., Suite 210 | |
751 | Annapolis MD 21403 | |
752 | ||
753 | This is the chip-specific code for many 8390-based ethernet adaptors. | |
754 | This is not a complete driver, it must be combined with board-specific | |
755 | code such as ne.c, wd.c, 3c503.c, etc. | |
756 | ||
757 | Seeing how at least eight drivers use this code, (not counting the | |
758 | PCMCIA ones either) it is easy to break some card by what seems like | |
759 | a simple innocent change. Please contact me or Donald if you think | |
760 | you have found something that needs changing. -- PG | |
761 | ||
762 | Changelog: | |
763 | ||
764 | Paul Gortmaker : remove set_bit lock, other cleanups. | |
765 | Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to | |
766 | ei_block_input() for eth_io_copy_and_sum(). | |
767 | Paul Gortmaker : exchange static int ei_pingpong for a #define, | |
768 | also add better Tx error handling. | |
769 | Paul Gortmaker : rewrite Rx overrun handling as per NS specs. | |
770 | Alexey Kuznetsov : use the 8390's six bit hash multicast filter. | |
771 | Paul Gortmaker : tweak ANK's above multicast changes a bit. | |
772 | Paul Gortmaker : update packet statistics for v2.1.x | |
25985edc | 773 | Alan Cox : support arbitrary stupid port mappings on the |
1da177e4 LT |
774 | 68K Macintosh. Support >16bit I/O spaces |
775 | Paul Gortmaker : add kmod support for auto-loading of the 8390 | |
776 | module by all drivers that require it. | |
777 | Alan Cox : Spinlocking work, added 'BUG_83C690' | |
778 | Paul Gortmaker : Separate out Tx timeout code from Tx path. | |
779 | ||
780 | Sources: | |
781 | The National Semiconductor LAN Databook, and the 3Com 3c503 databook. | |
782 | ||
783 | */ | |
784 | ||
1da177e4 LT |
785 | #include <linux/bitops.h> |
786 | #include <asm/irq.h> | |
787 | #include <linux/fcntl.h> | |
788 | #include <linux/in.h> | |
789 | #include <linux/interrupt.h> | |
790 | ||
1da177e4 LT |
791 | #define BUG_83C690 |
792 | ||
793 | /* These are the operational function interfaces to board-specific | |
794 | routines. | |
795 | void reset_8390(struct net_device *dev) | |
796 | Resets the board associated with DEV, including a hardware reset of | |
797 | the 8390. This is only called when there is a transmit timeout, and | |
798 | it is always followed by 8390_init(). | |
799 | void block_output(struct net_device *dev, int count, const unsigned char *buf, | |
800 | int start_page) | |
801 | Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The | |
802 | "page" value uses the 8390's 256-byte pages. | |
803 | void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page) | |
804 | Read the 4 byte, page aligned 8390 header. *If* there is a | |
805 | subsequent read, it will be of the rest of the packet. | |
806 | void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) | |
807 | Read COUNT bytes from the packet buffer into the skb data area. Start | |
808 | reading from RING_OFFSET, the address as the 8390 sees it. This will always | |
809 | follow the read of the 8390 header. | |
810 | */ | |
811 | #define ei_reset_8390 (ei_local->reset_8390) | |
812 | #define ei_block_output (ei_local->block_output) | |
813 | #define ei_block_input (ei_local->block_input) | |
814 | #define ei_get_8390_hdr (ei_local->get_8390_hdr) | |
815 | ||
1da177e4 LT |
816 | /* Index to functions. */ |
817 | static void ei_tx_intr(struct net_device *dev); | |
818 | static void ei_tx_err(struct net_device *dev); | |
1da177e4 LT |
819 | static void ei_receive(struct net_device *dev); |
820 | static void ei_rx_overrun(struct net_device *dev); | |
821 | ||
822 | /* Routines generic to NS8390-based boards. */ | |
823 | static void NS8390_trigger_send(struct net_device *dev, unsigned int length, | |
824 | int start_page); | |
1da177e4 LT |
825 | static void do_set_multicast_list(struct net_device *dev); |
826 | ||
827 | /* | |
828 | * SMP and the 8390 setup. | |
829 | * | |
25985edc | 830 | * The 8390 isn't exactly designed to be multithreaded on RX/TX. There is |
1da177e4 LT |
831 | * a page register that controls bank and packet buffer access. We guard |
832 | * this with ei_local->page_lock. Nobody should assume or set the page other | |
833 | * than zero when the lock is not held. Lock holders must restore page 0 | |
834 | * before unlocking. Even pure readers must take the lock to protect in | |
835 | * page 0. | |
836 | * | |
837 | * To make life difficult the chip can also be very slow. We therefore can't | |
838 | * just use spinlocks. For the longer lockups we disable the irq the device | |
839 | * sits on and hold the lock. We must hold the lock because there is a dual | |
840 | * processor case other than interrupts (get stats/set multicast list in | |
841 | * parallel with each other and transmit). | |
842 | * | |
843 | * Note: in theory we can just disable the irq on the card _but_ there is | |
844 | * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs" | |
845 | * enter lock, take the queued irq. So we waddle instead of flying. | |
846 | * | |
847 | * Finally by special arrangement for the purpose of being generally | |
848 | * annoying the transmit function is called bh atomic. That places | |
849 | * restrictions on the user context callers as disable_irq won't save | |
850 | * them. | |
851 | */ | |
852 | ||
853 | /** | |
854 | * ax_open - Open/initialize the board. | |
855 | * @dev: network device to initialize | |
856 | * | |
857 | * This routine goes all-out, setting everything | |
858 | * up anew at each open, even though many of these registers should only | |
859 | * need to be set once at boot. | |
860 | */ | |
861 | static int ax_open(struct net_device *dev) | |
862 | { | |
863 | unsigned long flags; | |
a887e220 | 864 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 | 865 | |
1da177e4 LT |
866 | /* |
867 | * Grab the page lock so we own the register set, then call | |
868 | * the init function. | |
869 | */ | |
870 | ||
871 | spin_lock_irqsave(&ei_local->page_lock, flags); | |
872 | AX88190_init(dev, 1); | |
873 | /* Set the flag before we drop the lock, That way the IRQ arrives | |
874 | after its set and we get no silly warnings */ | |
875 | netif_start_queue(dev); | |
876 | spin_unlock_irqrestore(&ei_local->page_lock, flags); | |
877 | ei_local->irqlock = 0; | |
878 | return 0; | |
879 | } | |
880 | ||
881 | #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock) | |
882 | ||
883 | /** | |
884 | * ax_close - shut down network device | |
885 | * @dev: network device to close | |
886 | * | |
887 | * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done. | |
888 | */ | |
6b2e4386 | 889 | static int ax_close(struct net_device *dev) |
1da177e4 LT |
890 | { |
891 | unsigned long flags; | |
892 | ||
893 | /* | |
894 | * Hold the page lock during close | |
895 | */ | |
896 | ||
897 | spin_lock_irqsave(&dev_lock(dev), flags); | |
898 | AX88190_init(dev, 0); | |
899 | spin_unlock_irqrestore(&dev_lock(dev), flags); | |
900 | netif_stop_queue(dev); | |
901 | return 0; | |
902 | } | |
903 | ||
904 | /** | |
70eb1bfd | 905 | * axnet_tx_timeout - handle transmit time out condition |
1da177e4 LT |
906 | * @dev: network device which has apparently fallen asleep |
907 | * | |
908 | * Called by kernel when device never acknowledges a transmit has | |
909 | * completed (or failed) - i.e. never posted a Tx related interrupt. | |
910 | */ | |
911 | ||
70eb1bfd | 912 | static void axnet_tx_timeout(struct net_device *dev) |
1da177e4 LT |
913 | { |
914 | long e8390_base = dev->base_addr; | |
a887e220 | 915 | struct ei_device *ei_local = netdev_priv(dev); |
1ae5dc34 | 916 | int txsr, isr, tickssofar = jiffies - dev_trans_start(dev); |
1da177e4 LT |
917 | unsigned long flags; |
918 | ||
8e269165 | 919 | dev->stats.tx_errors++; |
1da177e4 LT |
920 | |
921 | spin_lock_irqsave(&ei_local->page_lock, flags); | |
922 | txsr = inb(e8390_base+EN0_TSR); | |
923 | isr = inb(e8390_base+EN0_ISR); | |
924 | spin_unlock_irqrestore(&ei_local->page_lock, flags); | |
925 | ||
c45f812f MW |
926 | netdev_dbg(dev, "Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n", |
927 | (txsr & ENTSR_ABT) ? "excess collisions." : | |
928 | (isr) ? "lost interrupt?" : "cable problem?", | |
929 | txsr, isr, tickssofar); | |
1da177e4 | 930 | |
8e269165 | 931 | if (!isr && !dev->stats.tx_packets) |
1da177e4 LT |
932 | { |
933 | /* The 8390 probably hasn't gotten on the cable yet. */ | |
934 | ei_local->interface_num ^= 1; /* Try a different xcvr. */ | |
935 | } | |
936 | ||
937 | /* Ugly but a reset can be slow, yet must be protected */ | |
938 | ||
bd5a9346 | 939 | spin_lock_irqsave(&ei_local->page_lock, flags); |
1da177e4 LT |
940 | |
941 | /* Try to restart the card. Perhaps the user has fixed something. */ | |
942 | ei_reset_8390(dev); | |
943 | AX88190_init(dev, 1); | |
944 | ||
bd5a9346 | 945 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
1da177e4 LT |
946 | netif_wake_queue(dev); |
947 | } | |
948 | ||
949 | /** | |
70eb1bfd | 950 | * axnet_start_xmit - begin packet transmission |
1da177e4 LT |
951 | * @skb: packet to be sent |
952 | * @dev: network device to which packet is sent | |
953 | * | |
954 | * Sends a packet to an 8390 network device. | |
955 | */ | |
956 | ||
dbf02fae SH |
957 | static netdev_tx_t axnet_start_xmit(struct sk_buff *skb, |
958 | struct net_device *dev) | |
1da177e4 LT |
959 | { |
960 | long e8390_base = dev->base_addr; | |
a887e220 | 961 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 LT |
962 | int length, send_length, output_page; |
963 | unsigned long flags; | |
964 | u8 packet[ETH_ZLEN]; | |
965 | ||
966 | netif_stop_queue(dev); | |
967 | ||
968 | length = skb->len; | |
969 | ||
970 | /* Mask interrupts from the ethercard. | |
971 | SMP: We have to grab the lock here otherwise the IRQ handler | |
972 | on another CPU can flip window and race the IRQ mask set. We end | |
973 | up trashing the mcast filter not disabling irqs if we don't lock */ | |
974 | ||
975 | spin_lock_irqsave(&ei_local->page_lock, flags); | |
976 | outb_p(0x00, e8390_base + EN0_IMR); | |
1da177e4 LT |
977 | |
978 | /* | |
979 | * Slow phase with lock held. | |
980 | */ | |
981 | ||
1da177e4 LT |
982 | ei_local->irqlock = 1; |
983 | ||
c61f26fa RK |
984 | send_length = max(length, ETH_ZLEN); |
985 | ||
1da177e4 LT |
986 | /* |
987 | * We have two Tx slots available for use. Find the first free | |
988 | * slot, and then perform some sanity checks. With two Tx bufs, | |
989 | * you get very close to transmitting back-to-back packets. With | |
990 | * only one Tx buf, the transmitter sits idle while you reload the | |
991 | * card, leaving a substantial gap between each transmitted packet. | |
992 | */ | |
993 | ||
994 | if (ei_local->tx1 == 0) | |
995 | { | |
996 | output_page = ei_local->tx_start_page; | |
997 | ei_local->tx1 = send_length; | |
c45f812f MW |
998 | if ((netif_msg_tx_queued(ei_local)) && |
999 | ei_local->tx2 > 0) | |
1000 | netdev_dbg(dev, | |
1001 | "idle transmitter tx2=%d, lasttx=%d, txing=%d\n", | |
1002 | ei_local->tx2, ei_local->lasttx, | |
1003 | ei_local->txing); | |
1da177e4 LT |
1004 | } |
1005 | else if (ei_local->tx2 == 0) | |
1006 | { | |
1007 | output_page = ei_local->tx_start_page + TX_PAGES/2; | |
1008 | ei_local->tx2 = send_length; | |
c45f812f MW |
1009 | if ((netif_msg_tx_queued(ei_local)) && |
1010 | ei_local->tx1 > 0) | |
1011 | netdev_dbg(dev, | |
1012 | "idle transmitter, tx1=%d, lasttx=%d, txing=%d\n", | |
1013 | ei_local->tx1, ei_local->lasttx, | |
1014 | ei_local->txing); | |
1da177e4 LT |
1015 | } |
1016 | else | |
1017 | { /* We should never get here. */ | |
c45f812f MW |
1018 | netif_dbg(ei_local, tx_err, dev, |
1019 | "No Tx buffers free! tx1=%d tx2=%d last=%d\n", | |
1020 | ei_local->tx1, ei_local->tx2, | |
1021 | ei_local->lasttx); | |
1da177e4 LT |
1022 | ei_local->irqlock = 0; |
1023 | netif_stop_queue(dev); | |
1024 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); | |
bd5a9346 | 1025 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
8e269165 | 1026 | dev->stats.tx_errors++; |
5b548140 | 1027 | return NETDEV_TX_BUSY; |
1da177e4 LT |
1028 | } |
1029 | ||
1030 | /* | |
1031 | * Okay, now upload the packet and trigger a send if the transmitter | |
1032 | * isn't already sending. If it is busy, the interrupt handler will | |
1033 | * trigger the send later, upon receiving a Tx done interrupt. | |
1034 | */ | |
1035 | ||
1036 | if (length == skb->len) | |
1037 | ei_block_output(dev, length, skb->data, output_page); | |
1038 | else { | |
1039 | memset(packet, 0, ETH_ZLEN); | |
d626f62b | 1040 | skb_copy_from_linear_data(skb, packet, skb->len); |
1da177e4 LT |
1041 | ei_block_output(dev, length, packet, output_page); |
1042 | } | |
1043 | ||
1044 | if (! ei_local->txing) | |
1045 | { | |
1046 | ei_local->txing = 1; | |
1047 | NS8390_trigger_send(dev, send_length, output_page); | |
1048 | dev->trans_start = jiffies; | |
1049 | if (output_page == ei_local->tx_start_page) | |
1050 | { | |
1051 | ei_local->tx1 = -1; | |
1052 | ei_local->lasttx = -1; | |
1053 | } | |
1054 | else | |
1055 | { | |
1056 | ei_local->tx2 = -1; | |
1057 | ei_local->lasttx = -2; | |
1058 | } | |
1059 | } | |
1060 | else ei_local->txqueue++; | |
1061 | ||
1062 | if (ei_local->tx1 && ei_local->tx2) | |
1063 | netif_stop_queue(dev); | |
1064 | else | |
1065 | netif_start_queue(dev); | |
1066 | ||
1067 | /* Turn 8390 interrupts back on. */ | |
1068 | ei_local->irqlock = 0; | |
1069 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); | |
1070 | ||
bd5a9346 | 1071 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
1da177e4 LT |
1072 | |
1073 | dev_kfree_skb (skb); | |
8e269165 | 1074 | dev->stats.tx_bytes += send_length; |
1da177e4 | 1075 | |
6ed10654 | 1076 | return NETDEV_TX_OK; |
1da177e4 LT |
1077 | } |
1078 | ||
1079 | /** | |
1080 | * ax_interrupt - handle the interrupts from an 8390 | |
1081 | * @irq: interrupt number | |
1082 | * @dev_id: a pointer to the net_device | |
1da177e4 LT |
1083 | * |
1084 | * Handle the ether interface interrupts. We pull packets from | |
1085 | * the 8390 via the card specific functions and fire them at the networking | |
1086 | * stack. We also handle transmit completions and wake the transmit path if | |
1087 | * necessary. We also update the counters and do other housekeeping as | |
1088 | * needed. | |
1089 | */ | |
1090 | ||
7d12e780 | 1091 | static irqreturn_t ax_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1092 | { |
1093 | struct net_device *dev = dev_id; | |
1094 | long e8390_base; | |
1095 | int interrupts, nr_serviced = 0, i; | |
1096 | struct ei_device *ei_local; | |
1097 | int handled = 0; | |
ab83a389 | 1098 | unsigned long flags; |
1da177e4 | 1099 | |
1da177e4 | 1100 | e8390_base = dev->base_addr; |
c31f28e7 | 1101 | ei_local = netdev_priv(dev); |
1da177e4 LT |
1102 | |
1103 | /* | |
1104 | * Protect the irq test too. | |
1105 | */ | |
1106 | ||
ab83a389 | 1107 | spin_lock_irqsave(&ei_local->page_lock, flags); |
1da177e4 | 1108 | |
636b8116 | 1109 | if (ei_local->irqlock) { |
1da177e4 | 1110 | #if 1 /* This might just be an interrupt for a PCI device sharing this line */ |
636b8116 | 1111 | const char *msg; |
1da177e4 | 1112 | /* The "irqlock" check is only for testing. */ |
636b8116 JP |
1113 | if (ei_local->irqlock) |
1114 | msg = "Interrupted while interrupts are masked!"; | |
1115 | else | |
1116 | msg = "Reentering the interrupt handler!"; | |
1117 | netdev_info(dev, "%s, isr=%#2x imr=%#2x\n", | |
1118 | msg, | |
1119 | inb_p(e8390_base + EN0_ISR), | |
1120 | inb_p(e8390_base + EN0_IMR)); | |
1da177e4 | 1121 | #endif |
ab83a389 | 1122 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
1da177e4 LT |
1123 | return IRQ_NONE; |
1124 | } | |
c45f812f MW |
1125 | |
1126 | netif_dbg(ei_local, intr, dev, "interrupt(isr=%#2.2x)\n", | |
1127 | inb_p(e8390_base + EN0_ISR)); | |
1da177e4 LT |
1128 | |
1129 | outb_p(0x00, e8390_base + EN0_ISR); | |
1130 | ei_local->irqlock = 1; | |
1131 | ||
1132 | /* !!Assumption!! -- we stay in page 0. Don't break this. */ | |
8e95a202 JP |
1133 | while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0 && |
1134 | ++nr_serviced < MAX_SERVICE) | |
1da177e4 LT |
1135 | { |
1136 | if (!netif_running(dev) || (interrupts == 0xff)) { | |
c45f812f MW |
1137 | netif_warn(ei_local, intr, dev, |
1138 | "interrupt from stopped card\n"); | |
1da177e4 LT |
1139 | outb_p(interrupts, e8390_base + EN0_ISR); |
1140 | interrupts = 0; | |
1141 | break; | |
1142 | } | |
1143 | handled = 1; | |
1144 | ||
1145 | /* AX88190 bug fix. */ | |
1146 | outb_p(interrupts, e8390_base + EN0_ISR); | |
1147 | for (i = 0; i < 10; i++) { | |
1148 | if (!(inb(e8390_base + EN0_ISR) & interrupts)) | |
1149 | break; | |
1150 | outb_p(0, e8390_base + EN0_ISR); | |
1151 | outb_p(interrupts, e8390_base + EN0_ISR); | |
1152 | } | |
1153 | if (interrupts & ENISR_OVER) | |
1154 | ei_rx_overrun(dev); | |
1155 | else if (interrupts & (ENISR_RX+ENISR_RX_ERR)) | |
1156 | { | |
1157 | /* Got a good (?) packet. */ | |
1158 | ei_receive(dev); | |
1159 | } | |
1160 | /* Push the next to-transmit packet through. */ | |
1161 | if (interrupts & ENISR_TX) | |
1162 | ei_tx_intr(dev); | |
1163 | else if (interrupts & ENISR_TX_ERR) | |
1164 | ei_tx_err(dev); | |
1165 | ||
1166 | if (interrupts & ENISR_COUNTERS) | |
1167 | { | |
8e269165 PZ |
1168 | dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0); |
1169 | dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1); | |
1170 | dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2); | |
1da177e4 LT |
1171 | } |
1172 | } | |
1173 | ||
c45f812f | 1174 | if (interrupts && (netif_msg_intr(ei_local))) |
1da177e4 LT |
1175 | { |
1176 | handled = 1; | |
1177 | if (nr_serviced >= MAX_SERVICE) | |
1178 | { | |
1179 | /* 0xFF is valid for a card removal */ | |
c45f812f MW |
1180 | if (interrupts != 0xFF) |
1181 | netdev_warn(dev, | |
1182 | "Too much work at interrupt, status %#2.2x\n", | |
636b8116 | 1183 | interrupts); |
1da177e4 LT |
1184 | outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */ |
1185 | } else { | |
636b8116 JP |
1186 | netdev_warn(dev, "unknown interrupt %#2x\n", |
1187 | interrupts); | |
1da177e4 LT |
1188 | outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */ |
1189 | } | |
1190 | } | |
1191 | ||
1192 | /* Turn 8390 interrupts back on. */ | |
1193 | ei_local->irqlock = 0; | |
1194 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); | |
1195 | ||
ab83a389 | 1196 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
1da177e4 LT |
1197 | return IRQ_RETVAL(handled); |
1198 | } | |
1199 | ||
1200 | /** | |
1201 | * ei_tx_err - handle transmitter error | |
1202 | * @dev: network device which threw the exception | |
1203 | * | |
1204 | * A transmitter error has happened. Most likely excess collisions (which | |
1205 | * is a fairly normal condition). If the error is one where the Tx will | |
1206 | * have been aborted, we try and send another one right away, instead of | |
1207 | * letting the failed packet sit and collect dust in the Tx buffer. This | |
1208 | * is a much better solution as it avoids kernel based Tx timeouts, and | |
1209 | * an unnecessary card reset. | |
1210 | * | |
1211 | * Called with lock held. | |
1212 | */ | |
1213 | ||
1214 | static void ei_tx_err(struct net_device *dev) | |
1215 | { | |
1216 | long e8390_base = dev->base_addr; | |
1da177e4 LT |
1217 | unsigned char txsr = inb_p(e8390_base+EN0_TSR); |
1218 | unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU); | |
1219 | ||
1220 | #ifdef VERBOSE_ERROR_DUMP | |
c45f812f | 1221 | netdev_dbg(dev, "transmitter error (%#2x):", txsr); |
1da177e4 | 1222 | if (txsr & ENTSR_ABT) |
636b8116 | 1223 | pr_cont(" excess-collisions"); |
1da177e4 | 1224 | if (txsr & ENTSR_ND) |
636b8116 | 1225 | pr_cont(" non-deferral"); |
1da177e4 | 1226 | if (txsr & ENTSR_CRS) |
636b8116 | 1227 | pr_cont(" lost-carrier"); |
1da177e4 | 1228 | if (txsr & ENTSR_FU) |
636b8116 | 1229 | pr_cont(" FIFO-underrun"); |
1da177e4 | 1230 | if (txsr & ENTSR_CDH) |
636b8116 JP |
1231 | pr_cont(" lost-heartbeat"); |
1232 | pr_cont("\n"); | |
1da177e4 LT |
1233 | #endif |
1234 | ||
1235 | if (tx_was_aborted) | |
1236 | ei_tx_intr(dev); | |
1237 | else | |
1238 | { | |
8e269165 PZ |
1239 | dev->stats.tx_errors++; |
1240 | if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++; | |
1241 | if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++; | |
1242 | if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++; | |
1da177e4 LT |
1243 | } |
1244 | } | |
1245 | ||
1246 | /** | |
1247 | * ei_tx_intr - transmit interrupt handler | |
1248 | * @dev: network device for which tx intr is handled | |
1249 | * | |
1250 | * We have finished a transmit: check for errors and then trigger the next | |
1251 | * packet to be sent. Called with lock held. | |
1252 | */ | |
1253 | ||
1254 | static void ei_tx_intr(struct net_device *dev) | |
1255 | { | |
1256 | long e8390_base = dev->base_addr; | |
a887e220 | 1257 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 LT |
1258 | int status = inb(e8390_base + EN0_TSR); |
1259 | ||
1260 | /* | |
1261 | * There are two Tx buffers, see which one finished, and trigger | |
1262 | * the send of another one if it exists. | |
1263 | */ | |
1264 | ei_local->txqueue--; | |
1265 | ||
1266 | if (ei_local->tx1 < 0) | |
1267 | { | |
1268 | if (ei_local->lasttx != 1 && ei_local->lasttx != -1) | |
636b8116 JP |
1269 | netdev_err(dev, "%s: bogus last_tx_buffer %d, tx1=%d\n", |
1270 | ei_local->name, ei_local->lasttx, | |
1271 | ei_local->tx1); | |
1da177e4 LT |
1272 | ei_local->tx1 = 0; |
1273 | if (ei_local->tx2 > 0) | |
1274 | { | |
1275 | ei_local->txing = 1; | |
1276 | NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6); | |
1277 | dev->trans_start = jiffies; | |
1278 | ei_local->tx2 = -1, | |
1279 | ei_local->lasttx = 2; | |
1280 | } | |
1281 | else ei_local->lasttx = 20, ei_local->txing = 0; | |
1282 | } | |
1283 | else if (ei_local->tx2 < 0) | |
1284 | { | |
1285 | if (ei_local->lasttx != 2 && ei_local->lasttx != -2) | |
c45f812f MW |
1286 | netdev_err(dev, "%s: bogus last_tx_buffer %d, tx2=%d\n", |
1287 | ei_local->name, ei_local->lasttx, | |
1288 | ei_local->tx2); | |
1da177e4 LT |
1289 | ei_local->tx2 = 0; |
1290 | if (ei_local->tx1 > 0) | |
1291 | { | |
1292 | ei_local->txing = 1; | |
1293 | NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page); | |
1294 | dev->trans_start = jiffies; | |
1295 | ei_local->tx1 = -1; | |
1296 | ei_local->lasttx = 1; | |
1297 | } | |
1298 | else | |
1299 | ei_local->lasttx = 10, ei_local->txing = 0; | |
1300 | } | |
636b8116 JP |
1301 | // else |
1302 | // netdev_warn(dev, "unexpected TX-done interrupt, lasttx=%d\n", | |
1303 | // ei_local->lasttx); | |
1da177e4 LT |
1304 | |
1305 | /* Minimize Tx latency: update the statistics after we restart TXing. */ | |
1306 | if (status & ENTSR_COL) | |
8e269165 | 1307 | dev->stats.collisions++; |
1da177e4 | 1308 | if (status & ENTSR_PTX) |
8e269165 | 1309 | dev->stats.tx_packets++; |
1da177e4 LT |
1310 | else |
1311 | { | |
8e269165 | 1312 | dev->stats.tx_errors++; |
1da177e4 LT |
1313 | if (status & ENTSR_ABT) |
1314 | { | |
8e269165 PZ |
1315 | dev->stats.tx_aborted_errors++; |
1316 | dev->stats.collisions += 16; | |
1da177e4 LT |
1317 | } |
1318 | if (status & ENTSR_CRS) | |
8e269165 | 1319 | dev->stats.tx_carrier_errors++; |
1da177e4 | 1320 | if (status & ENTSR_FU) |
8e269165 | 1321 | dev->stats.tx_fifo_errors++; |
1da177e4 | 1322 | if (status & ENTSR_CDH) |
8e269165 | 1323 | dev->stats.tx_heartbeat_errors++; |
1da177e4 | 1324 | if (status & ENTSR_OWC) |
8e269165 | 1325 | dev->stats.tx_window_errors++; |
1da177e4 LT |
1326 | } |
1327 | netif_wake_queue(dev); | |
1328 | } | |
1329 | ||
1330 | /** | |
1331 | * ei_receive - receive some packets | |
1332 | * @dev: network device with which receive will be run | |
1333 | * | |
1334 | * We have a good packet(s), get it/them out of the buffers. | |
1335 | * Called with lock held. | |
1336 | */ | |
1337 | ||
1338 | static void ei_receive(struct net_device *dev) | |
1339 | { | |
1340 | long e8390_base = dev->base_addr; | |
a887e220 | 1341 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 LT |
1342 | unsigned char rxing_page, this_frame, next_frame; |
1343 | unsigned short current_offset; | |
1344 | int rx_pkt_count = 0; | |
1345 | struct e8390_pkt_hdr rx_frame; | |
1346 | ||
1347 | while (++rx_pkt_count < 10) | |
1348 | { | |
1349 | int pkt_len, pkt_stat; | |
1350 | ||
1351 | /* Get the rx page (incoming packet pointer). */ | |
1352 | rxing_page = inb_p(e8390_base + EN1_CURPAG -1); | |
1353 | ||
1354 | /* Remove one frame from the ring. Boundary is always a page behind. */ | |
1355 | this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1; | |
1356 | if (this_frame >= ei_local->stop_page) | |
1357 | this_frame = ei_local->rx_start_page; | |
1358 | ||
1359 | /* Someday we'll omit the previous, iff we never get this message. | |
1360 | (There is at least one clone claimed to have a problem.) | |
1361 | ||
1362 | Keep quiet if it looks like a card removal. One problem here | |
1363 | is that some clones crash in roughly the same way. | |
1364 | */ | |
c45f812f MW |
1365 | if ((netif_msg_rx_err(ei_local)) && |
1366 | this_frame != ei_local->current_page && | |
1367 | (this_frame != 0x0 || rxing_page != 0xFF)) | |
1368 | netdev_err(dev, "mismatched read page pointers %2x vs %2x\n", | |
1369 | this_frame, ei_local->current_page); | |
1da177e4 LT |
1370 | |
1371 | if (this_frame == rxing_page) /* Read all the frames? */ | |
1372 | break; /* Done for now */ | |
1373 | ||
1374 | current_offset = this_frame << 8; | |
1375 | ei_get_8390_hdr(dev, &rx_frame, this_frame); | |
1376 | ||
1377 | pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr); | |
1378 | pkt_stat = rx_frame.status; | |
1379 | ||
1380 | next_frame = this_frame + 1 + ((pkt_len+4)>>8); | |
1381 | ||
1382 | if (pkt_len < 60 || pkt_len > 1518) | |
1383 | { | |
c45f812f MW |
1384 | netif_err(ei_local, rx_err, dev, |
1385 | "bogus packet size: %d, status=%#2x nxpg=%#2x\n", | |
1386 | rx_frame.count, rx_frame.status, | |
1387 | rx_frame.next); | |
8e269165 PZ |
1388 | dev->stats.rx_errors++; |
1389 | dev->stats.rx_length_errors++; | |
1da177e4 LT |
1390 | } |
1391 | else if ((pkt_stat & 0x0F) == ENRSR_RXOK) | |
1392 | { | |
1393 | struct sk_buff *skb; | |
1394 | ||
1d266430 | 1395 | skb = netdev_alloc_skb(dev, pkt_len + 2); |
1da177e4 LT |
1396 | if (skb == NULL) |
1397 | { | |
c45f812f MW |
1398 | netif_err(ei_local, rx_err, dev, |
1399 | "Couldn't allocate a sk_buff of size %d\n", | |
1400 | pkt_len); | |
8e269165 | 1401 | dev->stats.rx_dropped++; |
1da177e4 LT |
1402 | break; |
1403 | } | |
1404 | else | |
1405 | { | |
1406 | skb_reserve(skb,2); /* IP headers on 16 byte boundaries */ | |
1da177e4 LT |
1407 | skb_put(skb, pkt_len); /* Make room */ |
1408 | ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame)); | |
1409 | skb->protocol=eth_type_trans(skb,dev); | |
1410 | netif_rx(skb); | |
8e269165 PZ |
1411 | dev->stats.rx_packets++; |
1412 | dev->stats.rx_bytes += pkt_len; | |
1da177e4 | 1413 | if (pkt_stat & ENRSR_PHY) |
8e269165 | 1414 | dev->stats.multicast++; |
1da177e4 LT |
1415 | } |
1416 | } | |
1417 | else | |
1418 | { | |
c45f812f MW |
1419 | netif_err(ei_local, rx_err, dev, |
1420 | "bogus packet: status=%#2x nxpg=%#2x size=%d\n", | |
1421 | rx_frame.status, rx_frame.next, | |
1422 | rx_frame.count); | |
8e269165 | 1423 | dev->stats.rx_errors++; |
1da177e4 LT |
1424 | /* NB: The NIC counts CRC, frame and missed errors. */ |
1425 | if (pkt_stat & ENRSR_FO) | |
8e269165 | 1426 | dev->stats.rx_fifo_errors++; |
1da177e4 LT |
1427 | } |
1428 | next_frame = rx_frame.next; | |
1429 | ||
1430 | /* This _should_ never happen: it's here for avoiding bad clones. */ | |
1431 | if (next_frame >= ei_local->stop_page) { | |
636b8116 JP |
1432 | netdev_info(dev, "next frame inconsistency, %#2x\n", |
1433 | next_frame); | |
1da177e4 LT |
1434 | next_frame = ei_local->rx_start_page; |
1435 | } | |
1436 | ei_local->current_page = next_frame; | |
1437 | outb_p(next_frame-1, e8390_base+EN0_BOUNDARY); | |
1438 | } | |
1da177e4 LT |
1439 | } |
1440 | ||
1441 | /** | |
1442 | * ei_rx_overrun - handle receiver overrun | |
1443 | * @dev: network device which threw exception | |
1444 | * | |
1445 | * We have a receiver overrun: we have to kick the 8390 to get it started | |
1446 | * again. Problem is that you have to kick it exactly as NS prescribes in | |
1447 | * the updated datasheets, or "the NIC may act in an unpredictable manner." | |
1448 | * This includes causing "the NIC to defer indefinitely when it is stopped | |
1449 | * on a busy network." Ugh. | |
1450 | * Called with lock held. Don't call this with the interrupts off or your | |
1451 | * computer will hate you - it takes 10ms or so. | |
1452 | */ | |
1453 | ||
1454 | static void ei_rx_overrun(struct net_device *dev) | |
1455 | { | |
ff768cd7 | 1456 | axnet_dev_t *info = PRIV(dev); |
1da177e4 LT |
1457 | long e8390_base = dev->base_addr; |
1458 | unsigned char was_txing, must_resend = 0; | |
c45f812f | 1459 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 LT |
1460 | |
1461 | /* | |
1462 | * Record whether a Tx was in progress and then issue the | |
1463 | * stop command. | |
1464 | */ | |
1465 | was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS; | |
1466 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); | |
c45f812f MW |
1467 | |
1468 | netif_dbg(ei_local, rx_err, dev, "Receiver overrun\n"); | |
8e269165 | 1469 | dev->stats.rx_over_errors++; |
1da177e4 LT |
1470 | |
1471 | /* | |
1472 | * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total. | |
785e8cc3 | 1473 | * We wait at least 2ms. |
1da177e4 LT |
1474 | */ |
1475 | ||
785e8cc3 | 1476 | mdelay(2); |
1da177e4 LT |
1477 | |
1478 | /* | |
1479 | * Reset RBCR[01] back to zero as per magic incantation. | |
1480 | */ | |
1481 | outb_p(0x00, e8390_base+EN0_RCNTLO); | |
1482 | outb_p(0x00, e8390_base+EN0_RCNTHI); | |
1483 | ||
1484 | /* | |
1485 | * See if any Tx was interrupted or not. According to NS, this | |
1486 | * step is vital, and skipping it will cause no end of havoc. | |
1487 | */ | |
1488 | ||
1489 | if (was_txing) | |
1490 | { | |
1491 | unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR); | |
1492 | if (!tx_completed) | |
1493 | must_resend = 1; | |
1494 | } | |
1495 | ||
1496 | /* | |
1497 | * Have to enter loopback mode and then restart the NIC before | |
1498 | * you are allowed to slurp packets up off the ring. | |
1499 | */ | |
1500 | outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); | |
1501 | outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD); | |
1502 | ||
1503 | /* | |
1504 | * Clear the Rx ring of all the debris, and ack the interrupt. | |
1505 | */ | |
1506 | ei_receive(dev); | |
1507 | ||
1508 | /* | |
1509 | * Leave loopback mode, and resend any packet that got stopped. | |
1510 | */ | |
1511 | outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR); | |
1512 | if (must_resend) | |
1513 | outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD); | |
1514 | } | |
1515 | ||
1516 | /* | |
1517 | * Collect the stats. This is called unlocked and from several contexts. | |
1518 | */ | |
1519 | ||
1520 | static struct net_device_stats *get_stats(struct net_device *dev) | |
1521 | { | |
1522 | long ioaddr = dev->base_addr; | |
a887e220 | 1523 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 LT |
1524 | unsigned long flags; |
1525 | ||
1526 | /* If the card is stopped, just return the present stats. */ | |
1527 | if (!netif_running(dev)) | |
8e269165 | 1528 | return &dev->stats; |
1da177e4 LT |
1529 | |
1530 | spin_lock_irqsave(&ei_local->page_lock,flags); | |
1531 | /* Read the counter registers, assuming we are in page 0. */ | |
8e269165 PZ |
1532 | dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0); |
1533 | dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1); | |
1534 | dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2); | |
1da177e4 LT |
1535 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
1536 | ||
8e269165 | 1537 | return &dev->stats; |
1da177e4 LT |
1538 | } |
1539 | ||
b8ab2dc3 K |
1540 | /* |
1541 | * Form the 64 bit 8390 multicast table from the linked list of addresses | |
1542 | * associated with this dev structure. | |
1543 | */ | |
1544 | ||
1545 | static inline void make_mc_bits(u8 *bits, struct net_device *dev) | |
1546 | { | |
22bedad3 | 1547 | struct netdev_hw_addr *ha; |
b8ab2dc3 K |
1548 | u32 crc; |
1549 | ||
22bedad3 JP |
1550 | netdev_for_each_mc_addr(ha, dev) { |
1551 | crc = ether_crc(ETH_ALEN, ha->addr); | |
b8ab2dc3 K |
1552 | /* |
1553 | * The 8390 uses the 6 most significant bits of the | |
1554 | * CRC to index the multicast table. | |
1555 | */ | |
1556 | bits[crc>>29] |= (1<<((crc>>26)&7)); | |
1557 | } | |
1558 | } | |
1559 | ||
1da177e4 LT |
1560 | /** |
1561 | * do_set_multicast_list - set/clear multicast filter | |
1562 | * @dev: net device for which multicast filter is adjusted | |
1563 | * | |
b8ab2dc3 K |
1564 | * Set or clear the multicast filter for this adaptor. |
1565 | * Must be called with lock held. | |
1da177e4 LT |
1566 | */ |
1567 | ||
1568 | static void do_set_multicast_list(struct net_device *dev) | |
1569 | { | |
1570 | long e8390_base = dev->base_addr; | |
b8ab2dc3 | 1571 | int i; |
a887e220 | 1572 | struct ei_device *ei_local = netdev_priv(dev); |
b8ab2dc3 K |
1573 | |
1574 | if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) { | |
1575 | memset(ei_local->mcfilter, 0, 8); | |
91fea585 | 1576 | if (!netdev_mc_empty(dev)) |
b8ab2dc3 K |
1577 | make_mc_bits(ei_local->mcfilter, dev); |
1578 | } else { | |
1579 | /* set to accept-all */ | |
1580 | memset(ei_local->mcfilter, 0xFF, 8); | |
1581 | } | |
1582 | ||
b8ab2dc3 K |
1583 | outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD); |
1584 | for(i = 0; i < 8; i++) | |
1585 | { | |
1586 | outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i)); | |
1587 | } | |
1588 | outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD); | |
1da177e4 LT |
1589 | |
1590 | if(dev->flags&IFF_PROMISC) | |
1591 | outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR); | |
91fea585 | 1592 | else if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) |
1da177e4 LT |
1593 | outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR); |
1594 | else | |
1595 | outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); | |
f905703a K |
1596 | |
1597 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD); | |
1da177e4 LT |
1598 | } |
1599 | ||
1600 | /* | |
1601 | * Called without lock held. This is invoked from user context and may | |
1602 | * be parallel to just about everything else. Its also fairly quick and | |
1603 | * not called too often. Must protect against both bh and irq users | |
1604 | */ | |
1605 | ||
1606 | static void set_multicast_list(struct net_device *dev) | |
1607 | { | |
1608 | unsigned long flags; | |
1609 | ||
1610 | spin_lock_irqsave(&dev_lock(dev), flags); | |
1611 | do_set_multicast_list(dev); | |
1612 | spin_unlock_irqrestore(&dev_lock(dev), flags); | |
1613 | } | |
1614 | ||
1da177e4 LT |
1615 | /* This page of functions should be 8390 generic */ |
1616 | /* Follow National Semi's recommendations for initializing the "NIC". */ | |
1617 | ||
1618 | /** | |
1619 | * AX88190_init - initialize 8390 hardware | |
1620 | * @dev: network device to initialize | |
1621 | * @startp: boolean. non-zero value to initiate chip processing | |
1622 | * | |
1623 | * Must be called with lock held. | |
1624 | */ | |
1625 | ||
1626 | static void AX88190_init(struct net_device *dev, int startp) | |
1627 | { | |
1628 | axnet_dev_t *info = PRIV(dev); | |
1629 | long e8390_base = dev->base_addr; | |
a887e220 | 1630 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 LT |
1631 | int i; |
1632 | int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48; | |
1633 | ||
1634 | if(sizeof(struct e8390_pkt_hdr)!=4) | |
1635 | panic("8390.c: header struct mispacked\n"); | |
1636 | /* Follow National Semi's recommendations for initing the DP83902. */ | |
1637 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */ | |
1638 | outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */ | |
1639 | /* Clear the remote byte count registers. */ | |
1640 | outb_p(0x00, e8390_base + EN0_RCNTLO); | |
1641 | outb_p(0x00, e8390_base + EN0_RCNTHI); | |
1642 | /* Set to monitor and loopback mode -- this is vital!. */ | |
1643 | outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */ | |
1644 | outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */ | |
1645 | /* Set the transmit page and receive ring. */ | |
1646 | outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR); | |
1647 | ei_local->tx1 = ei_local->tx2 = 0; | |
1648 | outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG); | |
1649 | outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/ | |
1650 | ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */ | |
1651 | outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG); | |
1652 | /* Clear the pending interrupts and mask. */ | |
1653 | outb_p(0xFF, e8390_base + EN0_ISR); | |
1654 | outb_p(0x00, e8390_base + EN0_IMR); | |
1655 | ||
1656 | /* Copy the station address into the DS8390 registers. */ | |
1657 | ||
1658 | outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */ | |
1659 | for(i = 0; i < 6; i++) | |
1660 | { | |
1661 | outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i)); | |
1662 | if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i]) | |
636b8116 | 1663 | netdev_err(dev, "Hw. address read/write mismap %d\n", i); |
1da177e4 | 1664 | } |
1da177e4 LT |
1665 | |
1666 | outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG); | |
1667 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); | |
1668 | ||
1669 | netif_start_queue(dev); | |
1670 | ei_local->tx1 = ei_local->tx2 = 0; | |
1671 | ei_local->txing = 0; | |
1672 | ||
ad3620a0 KK |
1673 | if (info->flags & IS_AX88790) /* select Internal PHY */ |
1674 | outb(0x10, e8390_base + AXNET_GPIO); | |
1675 | ||
1da177e4 LT |
1676 | if (startp) |
1677 | { | |
1678 | outb_p(0xff, e8390_base + EN0_ISR); | |
1679 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); | |
1680 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD); | |
1681 | outb_p(E8390_TXCONFIG | info->duplex_flag, | |
1682 | e8390_base + EN0_TXCR); /* xmit on. */ | |
1683 | /* 3c503 TechMan says rxconfig only after the NIC is started. */ | |
1684 | outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */ | |
1685 | do_set_multicast_list(dev); /* (re)load the mcast table */ | |
1686 | } | |
1687 | } | |
1688 | ||
1689 | /* Trigger a transmit start, assuming the length is valid. | |
1690 | Always called with the page lock held */ | |
1691 | ||
1692 | static void NS8390_trigger_send(struct net_device *dev, unsigned int length, | |
1693 | int start_page) | |
1694 | { | |
1695 | long e8390_base = dev->base_addr; | |
a887e220 | 1696 | struct ei_device *ei_local __attribute((unused)) = netdev_priv(dev); |
1da177e4 LT |
1697 | |
1698 | if (inb_p(e8390_base) & E8390_TRANS) | |
1699 | { | |
636b8116 | 1700 | netdev_warn(dev, "trigger_send() called with the transmitter busy\n"); |
1da177e4 LT |
1701 | return; |
1702 | } | |
1703 | outb_p(length & 0xff, e8390_base + EN0_TCNTLO); | |
1704 | outb_p(length >> 8, e8390_base + EN0_TCNTHI); | |
1705 | outb_p(start_page, e8390_base + EN0_TPSR); | |
1706 | outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD); | |
1707 | } |