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> | |
1da177e4 | 31 | #include <linux/ptrace.h> |
1da177e4 LT |
32 | #include <linux/string.h> |
33 | #include <linux/timer.h> | |
34 | #include <linux/delay.h> | |
35 | #include <linux/spinlock.h> | |
1da177e4 | 36 | #include <linux/netdevice.h> |
3dd20516 | 37 | #include <linux/etherdevice.h> |
b8ab2dc3 | 38 | #include <linux/crc32.h> |
0fa0ee05 | 39 | #include <linux/mii.h> |
644570b8 | 40 | #include "8390.h" |
1da177e4 | 41 | |
1da177e4 LT |
42 | #include <pcmcia/cistpl.h> |
43 | #include <pcmcia/ciscode.h> | |
44 | #include <pcmcia/ds.h> | |
45 | #include <pcmcia/cisreg.h> | |
46 | ||
47 | #include <asm/io.h> | |
1da177e4 | 48 | #include <asm/byteorder.h> |
7c0f6ba6 | 49 | #include <linux/uaccess.h> |
1da177e4 LT |
50 | |
51 | #define AXNET_CMD 0x00 | |
52 | #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */ | |
53 | #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */ | |
54 | #define AXNET_MII_EEP 0x14 /* Offset of MII access port */ | |
55 | #define AXNET_TEST 0x15 /* Offset of TEST Register port */ | |
56 | #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */ | |
57 | ||
58 | #define AXNET_START_PG 0x40 /* First page of TX buffer */ | |
59 | #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */ | |
60 | ||
61 | #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */ | |
62 | ||
63 | #define IS_AX88190 0x0001 | |
64 | #define IS_AX88790 0x0002 | |
65 | ||
66 | /*====================================================================*/ | |
67 | ||
68 | /* Module parameters */ | |
69 | ||
70 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
71 | MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver"); | |
72 | MODULE_LICENSE("GPL"); | |
73 | ||
1da177e4 LT |
74 | |
75 | /*====================================================================*/ | |
76 | ||
15b99ac1 | 77 | static int axnet_config(struct pcmcia_device *link); |
fba395ee | 78 | static void axnet_release(struct pcmcia_device *link); |
1da177e4 LT |
79 | static int axnet_open(struct net_device *dev); |
80 | static int axnet_close(struct net_device *dev); | |
81 | static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
dbf02fae SH |
82 | static netdev_tx_t axnet_start_xmit(struct sk_buff *skb, |
83 | struct net_device *dev); | |
3dd20516 SH |
84 | static struct net_device_stats *get_stats(struct net_device *dev); |
85 | static void set_multicast_list(struct net_device *dev); | |
0290bd29 | 86 | static void axnet_tx_timeout(struct net_device *dev, unsigned int txqueue); |
7d12e780 | 87 | static irqreturn_t ei_irq_wrapper(int irq, void *dev_id); |
c63144e4 | 88 | static void ei_watchdog(struct timer_list *t); |
1da177e4 LT |
89 | static void axnet_reset_8390(struct net_device *dev); |
90 | ||
906da809 OJ |
91 | static int mdio_read(unsigned int addr, int phy_id, int loc); |
92 | static void mdio_write(unsigned int addr, int phy_id, int loc, int value); | |
1da177e4 LT |
93 | |
94 | static void get_8390_hdr(struct net_device *, | |
95 | struct e8390_pkt_hdr *, int); | |
96 | static void block_input(struct net_device *dev, int count, | |
97 | struct sk_buff *skb, int ring_offset); | |
98 | static void block_output(struct net_device *dev, int count, | |
99 | const u_char *buf, const int start_page); | |
100 | ||
cc3b4866 | 101 | static void axnet_detach(struct pcmcia_device *p_dev); |
1da177e4 | 102 | |
1da177e4 LT |
103 | static void AX88190_init(struct net_device *dev, int startp); |
104 | static int ax_open(struct net_device *dev); | |
105 | static int ax_close(struct net_device *dev); | |
7d12e780 | 106 | static irqreturn_t ax_interrupt(int irq, void *dev_id); |
1da177e4 LT |
107 | |
108 | /*====================================================================*/ | |
109 | ||
abac0d3f | 110 | struct axnet_dev { |
fd238232 | 111 | struct pcmcia_device *p_dev; |
19c0ef6b KK |
112 | caddr_t base; |
113 | struct timer_list watchdog; | |
114 | int stale, fast_poll; | |
115 | u_short link_status; | |
116 | u_char duplex_flag; | |
117 | int phy_id; | |
118 | int flags; | |
119 | int active_low; | |
abac0d3f | 120 | }; |
1da177e4 | 121 | |
abac0d3f | 122 | static inline struct axnet_dev *PRIV(struct net_device *dev) |
1da177e4 LT |
123 | { |
124 | void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device); | |
125 | return p; | |
126 | } | |
127 | ||
3dd20516 SH |
128 | static const struct net_device_ops axnet_netdev_ops = { |
129 | .ndo_open = axnet_open, | |
130 | .ndo_stop = axnet_close, | |
131 | .ndo_do_ioctl = axnet_ioctl, | |
132 | .ndo_start_xmit = axnet_start_xmit, | |
133 | .ndo_tx_timeout = axnet_tx_timeout, | |
134 | .ndo_get_stats = get_stats, | |
afc4b13d | 135 | .ndo_set_rx_mode = set_multicast_list, |
3dd20516 SH |
136 | .ndo_set_mac_address = eth_mac_addr, |
137 | .ndo_validate_addr = eth_validate_addr, | |
138 | }; | |
139 | ||
15b99ac1 | 140 | static int axnet_probe(struct pcmcia_device *link) |
1da177e4 | 141 | { |
abac0d3f | 142 | struct axnet_dev *info; |
1da177e4 | 143 | struct net_device *dev; |
3dd20516 | 144 | struct ei_device *ei_local; |
1da177e4 | 145 | |
dd0fab5b | 146 | dev_dbg(&link->dev, "axnet_attach()\n"); |
1da177e4 | 147 | |
abac0d3f | 148 | dev = alloc_etherdev(sizeof(struct ei_device) + sizeof(struct axnet_dev)); |
1da177e4 | 149 | if (!dev) |
f8cfa618 | 150 | return -ENOMEM; |
1da177e4 | 151 | |
3dd20516 SH |
152 | ei_local = netdev_priv(dev); |
153 | spin_lock_init(&ei_local->page_lock); | |
154 | ||
1da177e4 | 155 | info = PRIV(dev); |
fba395ee | 156 | info->p_dev = link; |
1da177e4 | 157 | link->priv = dev; |
1ac71e5a | 158 | link->config_flags |= CONF_ENABLE_IRQ; |
1da177e4 | 159 | |
3dd20516 SH |
160 | dev->netdev_ops = &axnet_netdev_ops; |
161 | ||
3dd20516 | 162 | dev->watchdog_timeo = TX_TIMEOUT; |
1da177e4 | 163 | |
15b99ac1 | 164 | return axnet_config(link); |
1da177e4 LT |
165 | } /* axnet_attach */ |
166 | ||
fba395ee | 167 | static void axnet_detach(struct pcmcia_device *link) |
1da177e4 LT |
168 | { |
169 | struct net_device *dev = link->priv; | |
1da177e4 | 170 | |
dd0fab5b | 171 | dev_dbg(&link->dev, "axnet_detach(0x%p)\n", link); |
1da177e4 | 172 | |
c7c2fa07 | 173 | unregister_netdev(dev); |
1da177e4 | 174 | |
e2d40963 | 175 | axnet_release(link); |
1da177e4 | 176 | |
1da177e4 LT |
177 | free_netdev(dev); |
178 | } /* axnet_detach */ | |
179 | ||
180 | /*====================================================================== | |
181 | ||
182 | This probes for a card's hardware address by reading the PROM. | |
183 | ||
184 | ======================================================================*/ | |
185 | ||
fba395ee | 186 | static int get_prom(struct pcmcia_device *link) |
1da177e4 LT |
187 | { |
188 | struct net_device *dev = link->priv; | |
906da809 | 189 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
190 | int i, j; |
191 | ||
3396c782 | 192 | /* This is based on drivers/net/ethernet/8390/ne.c */ |
1da177e4 LT |
193 | struct { |
194 | u_char value, offset; | |
195 | } program_seq[] = { | |
196 | {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/ | |
197 | {0x01, EN0_DCFG}, /* Set word-wide access. */ | |
198 | {0x00, EN0_RCNTLO}, /* Clear the count regs. */ | |
199 | {0x00, EN0_RCNTHI}, | |
200 | {0x00, EN0_IMR}, /* Mask completion irq. */ | |
201 | {0xFF, EN0_ISR}, | |
202 | {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */ | |
203 | {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ | |
204 | {0x10, EN0_RCNTLO}, | |
205 | {0x00, EN0_RCNTHI}, | |
206 | {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */ | |
207 | {0x04, EN0_RSARHI}, | |
208 | {E8390_RREAD+E8390_START, E8390_CMD}, | |
209 | }; | |
210 | ||
211 | /* Not much of a test, but the alternatives are messy */ | |
7feabb64 | 212 | if (link->config_base != 0x03c0) |
1da177e4 LT |
213 | return 0; |
214 | ||
215 | axnet_reset_8390(dev); | |
216 | mdelay(10); | |
217 | ||
ff8ac609 | 218 | for (i = 0; i < ARRAY_SIZE(program_seq); i++) |
1da177e4 LT |
219 | outb_p(program_seq[i].value, ioaddr + program_seq[i].offset); |
220 | ||
221 | for (i = 0; i < 6; i += 2) { | |
222 | j = inw(ioaddr + AXNET_DATAPORT); | |
223 | dev->dev_addr[i] = j & 0xff; | |
224 | dev->dev_addr[i+1] = j >> 8; | |
225 | } | |
226 | return 1; | |
227 | } /* get_prom */ | |
228 | ||
fba395ee | 229 | static int try_io_port(struct pcmcia_device *link) |
1da177e4 LT |
230 | { |
231 | int j, ret; | |
90abdc3b DB |
232 | link->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
233 | link->resource[1]->flags &= ~IO_DATA_PATH_WIDTH; | |
234 | if (link->resource[0]->end == 32) { | |
235 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; | |
eb14120f | 236 | /* for master/slave multifunction cards */ |
90abdc3b DB |
237 | if (link->resource[1]->end > 0) |
238 | link->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; | |
1da177e4 LT |
239 | } else { |
240 | /* This should be two 16-port windows */ | |
90abdc3b DB |
241 | link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; |
242 | link->resource[1]->flags |= IO_DATA_PATH_WIDTH_16; | |
1da177e4 | 243 | } |
90abdc3b | 244 | if (link->resource[0]->start == 0) { |
1da177e4 | 245 | for (j = 0; j < 0x400; j += 0x20) { |
90abdc3b DB |
246 | link->resource[0]->start = j ^ 0x300; |
247 | link->resource[1]->start = (j ^ 0x300) + 0x10; | |
248 | link->io_lines = 16; | |
249 | ret = pcmcia_request_io(link); | |
4c89e88b DB |
250 | if (ret == 0) |
251 | return ret; | |
1da177e4 LT |
252 | } |
253 | return ret; | |
254 | } else { | |
90abdc3b | 255 | return pcmcia_request_io(link); |
1da177e4 LT |
256 | } |
257 | } | |
258 | ||
00990e7c | 259 | static int axnet_configcheck(struct pcmcia_device *p_dev, void *priv_data) |
b54bf94b | 260 | { |
00990e7c DB |
261 | if (p_dev->config_index == 0) |
262 | return -EINVAL; | |
b54bf94b | 263 | |
7feabb64 | 264 | p_dev->config_index = 0x05; |
00990e7c DB |
265 | if (p_dev->resource[0]->end + p_dev->resource[1]->end < 32) |
266 | return -ENODEV; | |
b54bf94b | 267 | |
00990e7c | 268 | return try_io_port(p_dev); |
b54bf94b DB |
269 | } |
270 | ||
15b99ac1 | 271 | static int axnet_config(struct pcmcia_device *link) |
1da177e4 | 272 | { |
1da177e4 | 273 | struct net_device *dev = link->priv; |
abac0d3f | 274 | struct axnet_dev *info = PRIV(dev); |
dd0fab5b | 275 | int i, j, j2, ret; |
1da177e4 | 276 | |
dd0fab5b | 277 | dev_dbg(&link->dev, "axnet_config(0x%p)\n", link); |
1da177e4 | 278 | |
1da177e4 | 279 | /* don't trust the CIS on this; Linksys got it wrong */ |
7feabb64 | 280 | link->config_regs = 0x63; |
00990e7c | 281 | link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; |
dd0fab5b DB |
282 | ret = pcmcia_loop_config(link, axnet_configcheck, NULL); |
283 | if (ret != 0) | |
1da177e4 | 284 | goto failed; |
1da177e4 | 285 | |
eb14120f | 286 | if (!link->irq) |
dd0fab5b | 287 | goto failed; |
1ac71e5a | 288 | |
fc301101 | 289 | if (resource_size(link->resource[1]) == 8) |
1ac71e5a | 290 | link->config_flags |= CONF_ENABLE_SPKR; |
1da177e4 | 291 | |
1ac71e5a | 292 | ret = pcmcia_enable_device(link); |
dd0fab5b DB |
293 | if (ret) |
294 | goto failed; | |
295 | ||
eb14120f | 296 | dev->irq = link->irq; |
9a017a91 | 297 | dev->base_addr = link->resource[0]->start; |
1da177e4 LT |
298 | |
299 | if (!get_prom(link)) { | |
636b8116 JP |
300 | pr_notice("this is not an AX88190 card!\n"); |
301 | pr_notice("use pcnet_cs instead.\n"); | |
1da177e4 LT |
302 | goto failed; |
303 | } | |
304 | ||
305 | ei_status.name = "AX88190"; | |
306 | ei_status.word16 = 1; | |
307 | ei_status.tx_start_page = AXNET_START_PG; | |
308 | ei_status.rx_start_page = AXNET_START_PG + TX_PAGES; | |
309 | ei_status.stop_page = AXNET_STOP_PG; | |
c061b18d JP |
310 | ei_status.reset_8390 = axnet_reset_8390; |
311 | ei_status.get_8390_hdr = get_8390_hdr; | |
312 | ei_status.block_input = block_input; | |
313 | ei_status.block_output = block_output; | |
1da177e4 LT |
314 | |
315 | if (inb(dev->base_addr + AXNET_TEST) != 0) | |
316 | info->flags |= IS_AX88790; | |
317 | else | |
318 | info->flags |= IS_AX88190; | |
319 | ||
320 | if (info->flags & IS_AX88790) | |
321 | outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */ | |
322 | ||
19c0ef6b KK |
323 | info->active_low = 0; |
324 | ||
1da177e4 LT |
325 | for (i = 0; i < 32; i++) { |
326 | j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1); | |
ad3620a0 KK |
327 | j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2); |
328 | if (j == j2) continue; | |
1da177e4 LT |
329 | if ((j != 0) && (j != 0xffff)) break; |
330 | } | |
331 | ||
1da177e4 | 332 | if (i == 32) { |
19c0ef6b KK |
333 | /* Maybe PHY is in power down mode. (PPD_SET = 1) |
334 | Bit 2 of CCSR is active low. */ | |
1d5cc192 | 335 | pcmcia_write_config_byte(link, CISREG_CCSR, 0x04); |
1da177e4 LT |
336 | for (i = 0; i < 32; i++) { |
337 | j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1); | |
ad3620a0 KK |
338 | j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2); |
339 | if (j == j2) continue; | |
19c0ef6b KK |
340 | if ((j != 0) && (j != 0xffff)) { |
341 | info->active_low = 1; | |
342 | break; | |
343 | } | |
1da177e4 LT |
344 | } |
345 | } | |
346 | ||
347 | info->phy_id = (i < 32) ? i : -1; | |
dd2e5a15 | 348 | SET_NETDEV_DEV(dev, &link->dev); |
1da177e4 LT |
349 | |
350 | if (register_netdev(dev) != 0) { | |
636b8116 | 351 | pr_notice("register_netdev() failed\n"); |
1da177e4 LT |
352 | goto failed; |
353 | } | |
354 | ||
636b8116 JP |
355 | netdev_info(dev, "Asix AX88%d90: io %#3lx, irq %d, hw_addr %pM\n", |
356 | ((info->flags & IS_AX88790) ? 7 : 1), | |
357 | dev->base_addr, dev->irq, dev->dev_addr); | |
1da177e4 | 358 | if (info->phy_id != -1) { |
636b8116 JP |
359 | netdev_dbg(dev, " MII transceiver at index %d, status %x\n", |
360 | info->phy_id, j); | |
1da177e4 | 361 | } else { |
636b8116 | 362 | netdev_notice(dev, " No MII transceivers found!\n"); |
1da177e4 | 363 | } |
15b99ac1 | 364 | return 0; |
1da177e4 | 365 | |
1da177e4 LT |
366 | failed: |
367 | axnet_release(link); | |
15b99ac1 | 368 | return -ENODEV; |
1da177e4 LT |
369 | } /* axnet_config */ |
370 | ||
fba395ee | 371 | static void axnet_release(struct pcmcia_device *link) |
1da177e4 | 372 | { |
fba395ee | 373 | pcmcia_disable_device(link); |
1da177e4 LT |
374 | } |
375 | ||
fba395ee | 376 | static int axnet_suspend(struct pcmcia_device *link) |
98e4c28b | 377 | { |
98e4c28b DB |
378 | struct net_device *dev = link->priv; |
379 | ||
e2d40963 DB |
380 | if (link->open) |
381 | netif_device_detach(dev); | |
98e4c28b DB |
382 | |
383 | return 0; | |
384 | } | |
385 | ||
fba395ee | 386 | static int axnet_resume(struct pcmcia_device *link) |
98e4c28b | 387 | { |
98e4c28b | 388 | struct net_device *dev = link->priv; |
abac0d3f | 389 | struct axnet_dev *info = PRIV(dev); |
98e4c28b | 390 | |
e2d40963 | 391 | if (link->open) { |
19c0ef6b KK |
392 | if (info->active_low == 1) |
393 | pcmcia_write_config_byte(link, CISREG_CCSR, 0x04); | |
394 | ||
8661bb5b DB |
395 | axnet_reset_8390(dev); |
396 | AX88190_init(dev, 1); | |
397 | netif_device_attach(dev); | |
98e4c28b DB |
398 | } |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
403 | ||
1da177e4 LT |
404 | /*====================================================================== |
405 | ||
406 | MII interface support | |
407 | ||
408 | ======================================================================*/ | |
409 | ||
410 | #define MDIO_SHIFT_CLK 0x01 | |
411 | #define MDIO_DATA_WRITE0 0x00 | |
412 | #define MDIO_DATA_WRITE1 0x08 | |
413 | #define MDIO_DATA_READ 0x04 | |
414 | #define MDIO_MASK 0x0f | |
415 | #define MDIO_ENB_IN 0x02 | |
416 | ||
906da809 | 417 | static void mdio_sync(unsigned int addr) |
1da177e4 LT |
418 | { |
419 | int bits; | |
420 | for (bits = 0; bits < 32; bits++) { | |
421 | outb_p(MDIO_DATA_WRITE1, addr); | |
422 | outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr); | |
423 | } | |
424 | } | |
425 | ||
906da809 | 426 | static int mdio_read(unsigned int addr, int phy_id, int loc) |
1da177e4 LT |
427 | { |
428 | u_int cmd = (0xf6<<10)|(phy_id<<5)|loc; | |
429 | int i, retval = 0; | |
430 | ||
431 | mdio_sync(addr); | |
432 | for (i = 14; i >= 0; i--) { | |
433 | int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; | |
434 | outb_p(dat, addr); | |
435 | outb_p(dat | MDIO_SHIFT_CLK, addr); | |
436 | } | |
437 | for (i = 19; i > 0; i--) { | |
438 | outb_p(MDIO_ENB_IN, addr); | |
439 | retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0); | |
440 | outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr); | |
441 | } | |
442 | return (retval>>1) & 0xffff; | |
443 | } | |
444 | ||
906da809 | 445 | static void mdio_write(unsigned int addr, int phy_id, int loc, int value) |
1da177e4 LT |
446 | { |
447 | u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value; | |
448 | int i; | |
449 | ||
450 | mdio_sync(addr); | |
451 | for (i = 31; i >= 0; i--) { | |
452 | int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; | |
453 | outb_p(dat, addr); | |
454 | outb_p(dat | MDIO_SHIFT_CLK, addr); | |
455 | } | |
456 | for (i = 1; i >= 0; i--) { | |
457 | outb_p(MDIO_ENB_IN, addr); | |
458 | outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr); | |
459 | } | |
460 | } | |
461 | ||
462 | /*====================================================================*/ | |
463 | ||
464 | static int axnet_open(struct net_device *dev) | |
465 | { | |
59b34c12 | 466 | int ret; |
abac0d3f | 467 | struct axnet_dev *info = PRIV(dev); |
fba395ee | 468 | struct pcmcia_device *link = info->p_dev; |
54299ef7 | 469 | unsigned int nic_base = dev->base_addr; |
1da177e4 | 470 | |
dd0fab5b | 471 | dev_dbg(&link->dev, "axnet_open('%s')\n", dev->name); |
1da177e4 | 472 | |
9940ec36 | 473 | if (!pcmcia_dev_present(link)) |
1da177e4 LT |
474 | return -ENODEV; |
475 | ||
54299ef7 | 476 | outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */ |
59b34c12 YY |
477 | ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev); |
478 | if (ret) | |
479 | return ret; | |
1da177e4 | 480 | |
59b34c12 | 481 | link->open++; |
1da177e4 LT |
482 | |
483 | info->link_status = 0x00; | |
c63144e4 | 484 | timer_setup(&info->watchdog, ei_watchdog, 0); |
6753a971 | 485 | mod_timer(&info->watchdog, jiffies + HZ); |
1da177e4 LT |
486 | |
487 | return ax_open(dev); | |
488 | } /* axnet_open */ | |
489 | ||
490 | /*====================================================================*/ | |
491 | ||
492 | static int axnet_close(struct net_device *dev) | |
493 | { | |
abac0d3f | 494 | struct axnet_dev *info = PRIV(dev); |
fba395ee | 495 | struct pcmcia_device *link = info->p_dev; |
1da177e4 | 496 | |
dd0fab5b | 497 | dev_dbg(&link->dev, "axnet_close('%s')\n", dev->name); |
1da177e4 LT |
498 | |
499 | ax_close(dev); | |
500 | free_irq(dev->irq, dev); | |
501 | ||
502 | link->open--; | |
503 | netif_stop_queue(dev); | |
504 | del_timer_sync(&info->watchdog); | |
505 | ||
506 | return 0; | |
507 | } /* axnet_close */ | |
508 | ||
509 | /*====================================================================== | |
510 | ||
511 | Hard reset the card. This used to pause for the same period that | |
512 | a 8390 reset command required, but that shouldn't be necessary. | |
513 | ||
514 | ======================================================================*/ | |
515 | ||
516 | static void axnet_reset_8390(struct net_device *dev) | |
517 | { | |
906da809 | 518 | unsigned int nic_base = dev->base_addr; |
1da177e4 LT |
519 | int i; |
520 | ||
521 | ei_status.txing = ei_status.dmaing = 0; | |
522 | ||
523 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD); | |
524 | ||
525 | outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET); | |
526 | ||
527 | for (i = 0; i < 100; i++) { | |
528 | if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0) | |
529 | break; | |
530 | udelay(100); | |
531 | } | |
532 | outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */ | |
533 | ||
534 | if (i == 100) | |
636b8116 | 535 | netdev_err(dev, "axnet_reset_8390() did not complete\n"); |
1da177e4 LT |
536 | |
537 | } /* axnet_reset_8390 */ | |
538 | ||
539 | /*====================================================================*/ | |
540 | ||
7d12e780 | 541 | static irqreturn_t ei_irq_wrapper(int irq, void *dev_id) |
1da177e4 LT |
542 | { |
543 | struct net_device *dev = dev_id; | |
544 | PRIV(dev)->stale = 0; | |
7d12e780 | 545 | return ax_interrupt(irq, dev_id); |
1da177e4 LT |
546 | } |
547 | ||
c63144e4 | 548 | static void ei_watchdog(struct timer_list *t) |
1da177e4 | 549 | { |
c63144e4 KC |
550 | struct axnet_dev *info = from_timer(info, t, watchdog); |
551 | struct net_device *dev = info->p_dev->priv; | |
906da809 OJ |
552 | unsigned int nic_base = dev->base_addr; |
553 | unsigned int mii_addr = nic_base + AXNET_MII_EEP; | |
1da177e4 LT |
554 | u_short link; |
555 | ||
556 | if (!netif_device_present(dev)) goto reschedule; | |
557 | ||
558 | /* Check for pending interrupt with expired latency timer: with | |
559 | this, we can limp along even if the interrupt is blocked */ | |
560 | if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) { | |
561 | if (!info->fast_poll) | |
636b8116 | 562 | netdev_info(dev, "interrupt(s) dropped!\n"); |
7d12e780 | 563 | ei_irq_wrapper(dev->irq, dev); |
1da177e4 LT |
564 | info->fast_poll = HZ; |
565 | } | |
566 | if (info->fast_poll) { | |
567 | info->fast_poll--; | |
568 | info->watchdog.expires = jiffies + 1; | |
569 | add_timer(&info->watchdog); | |
570 | return; | |
571 | } | |
572 | ||
573 | if (info->phy_id < 0) | |
574 | goto reschedule; | |
575 | link = mdio_read(mii_addr, info->phy_id, 1); | |
576 | if (!link || (link == 0xffff)) { | |
636b8116 | 577 | netdev_info(dev, "MII is missing!\n"); |
1da177e4 LT |
578 | info->phy_id = -1; |
579 | goto reschedule; | |
580 | } | |
581 | ||
582 | link &= 0x0004; | |
583 | if (link != info->link_status) { | |
584 | u_short p = mdio_read(mii_addr, info->phy_id, 5); | |
636b8116 | 585 | netdev_info(dev, "%s link beat\n", link ? "found" : "lost"); |
1da177e4 LT |
586 | if (link) { |
587 | info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00; | |
588 | if (p) | |
636b8116 JP |
589 | netdev_info(dev, "autonegotiation complete: %dbaseT-%cD selected\n", |
590 | (p & 0x0180) ? 100 : 10, (p & 0x0140) ? 'F' : 'H'); | |
1da177e4 | 591 | else |
636b8116 | 592 | netdev_info(dev, "link partner did not autonegotiate\n"); |
1da177e4 LT |
593 | AX88190_init(dev, 1); |
594 | } | |
595 | info->link_status = link; | |
596 | } | |
597 | ||
598 | reschedule: | |
599 | info->watchdog.expires = jiffies + HZ; | |
600 | add_timer(&info->watchdog); | |
601 | } | |
602 | ||
1da177e4 LT |
603 | /*====================================================================*/ |
604 | ||
605 | static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
606 | { | |
abac0d3f | 607 | struct axnet_dev *info = PRIV(dev); |
0fa0ee05 | 608 | struct mii_ioctl_data *data = if_mii(rq); |
906da809 | 609 | unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP; |
1da177e4 LT |
610 | switch (cmd) { |
611 | case SIOCGMIIPHY: | |
0fa0ee05 | 612 | data->phy_id = info->phy_id; |
497e0049 | 613 | /* Fall through */ |
1da177e4 | 614 | case SIOCGMIIREG: /* Read MII PHY register. */ |
0fa0ee05 | 615 | data->val_out = mdio_read(mii_addr, data->phy_id, data->reg_num & 0x1f); |
1da177e4 LT |
616 | return 0; |
617 | case SIOCSMIIREG: /* Write MII PHY register. */ | |
0fa0ee05 | 618 | mdio_write(mii_addr, data->phy_id, data->reg_num & 0x1f, data->val_in); |
1da177e4 LT |
619 | return 0; |
620 | } | |
621 | return -EOPNOTSUPP; | |
622 | } | |
623 | ||
624 | /*====================================================================*/ | |
625 | ||
626 | static void get_8390_hdr(struct net_device *dev, | |
627 | struct e8390_pkt_hdr *hdr, | |
628 | int ring_page) | |
629 | { | |
906da809 | 630 | unsigned int nic_base = dev->base_addr; |
1da177e4 LT |
631 | |
632 | outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */ | |
633 | outb_p(ring_page, nic_base + EN0_RSARHI); | |
634 | outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD); | |
635 | ||
636 | insw(nic_base + AXNET_DATAPORT, hdr, | |
637 | sizeof(struct e8390_pkt_hdr)>>1); | |
638 | /* Fix for big endian systems */ | |
639 | hdr->count = le16_to_cpu(hdr->count); | |
640 | ||
641 | } | |
642 | ||
643 | /*====================================================================*/ | |
644 | ||
645 | static void block_input(struct net_device *dev, int count, | |
646 | struct sk_buff *skb, int ring_offset) | |
647 | { | |
906da809 | 648 | unsigned int nic_base = dev->base_addr; |
c45f812f | 649 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 LT |
650 | int xfer_count = count; |
651 | char *buf = skb->data; | |
652 | ||
c45f812f MW |
653 | if ((netif_msg_rx_status(ei_local)) && (count != 4)) |
654 | netdev_dbg(dev, "[bi=%d]\n", count+4); | |
1da177e4 LT |
655 | outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO); |
656 | outb_p(ring_offset >> 8, nic_base + EN0_RSARHI); | |
657 | outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD); | |
658 | ||
659 | insw(nic_base + AXNET_DATAPORT,buf,count>>1); | |
660 | if (count & 0x01) | |
661 | buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++; | |
662 | ||
663 | } | |
664 | ||
665 | /*====================================================================*/ | |
666 | ||
667 | static void block_output(struct net_device *dev, int count, | |
668 | const u_char *buf, const int start_page) | |
669 | { | |
906da809 | 670 | unsigned int nic_base = dev->base_addr; |
1da177e4 | 671 | |
dd0fab5b | 672 | pr_debug("%s: [bo=%d]\n", dev->name, count); |
1da177e4 LT |
673 | |
674 | /* Round the count up for word writes. Do we need to do this? | |
675 | What effect will an odd byte count have on the 8390? | |
676 | I should check someday. */ | |
677 | if (count & 0x01) | |
678 | count++; | |
679 | ||
680 | outb_p(0x00, nic_base + EN0_RSARLO); | |
681 | outb_p(start_page, nic_base + EN0_RSARHI); | |
682 | outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD); | |
683 | outsw(nic_base + AXNET_DATAPORT, buf, count>>1); | |
684 | } | |
685 | ||
25f8f54f | 686 | static const struct pcmcia_device_id axnet_ids[] = { |
c414f755 DB |
687 | PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081), |
688 | PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301), | |
42dccd1f | 689 | PCMCIA_DEVICE_MANF_CARD(0x01bf, 0x2328), |
c414f755 DB |
690 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301), |
691 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303), | |
692 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309), | |
693 | PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106), | |
694 | PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab), | |
c67eebd6 | 695 | PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202), |
dad8c737 | 696 | PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090), |
2fe22a8b | 697 | PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc), |
c414f755 DB |
698 | PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef), |
699 | PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef), | |
700 | PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1), | |
701 | PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc), | |
702 | PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b), | |
703 | PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5), | |
704 | PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e), | |
60bbc725 | 705 | PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXM", 0x5261440f, 0x3abbd061), |
c414f755 | 706 | PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90), |
2dcc9ff7 | 707 | PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2), |
c414f755 DB |
708 | PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8), |
709 | PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609), | |
208fbec5 | 710 | PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875), |
c414f755 DB |
711 | PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04), |
712 | PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116), | |
713 | PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058), | |
714 | PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef), | |
c414f755 DB |
715 | PCMCIA_DEVICE_NULL, |
716 | }; | |
717 | MODULE_DEVICE_TABLE(pcmcia, axnet_ids); | |
718 | ||
1da177e4 LT |
719 | static struct pcmcia_driver axnet_cs_driver = { |
720 | .owner = THIS_MODULE, | |
2e9b981a | 721 | .name = "axnet_cs", |
15b99ac1 | 722 | .probe = axnet_probe, |
cc3b4866 | 723 | .remove = axnet_detach, |
c414f755 | 724 | .id_table = axnet_ids, |
98e4c28b DB |
725 | .suspend = axnet_suspend, |
726 | .resume = axnet_resume, | |
1da177e4 | 727 | }; |
fdd3f29e | 728 | module_pcmcia_driver(axnet_cs_driver); |
1da177e4 LT |
729 | |
730 | /*====================================================================*/ | |
731 | ||
732 | /* 8390.c: A general NS8390 ethernet driver core for linux. */ | |
733 | /* | |
734 | Written 1992-94 by Donald Becker. | |
735 | ||
736 | Copyright 1993 United States Government as represented by the | |
737 | Director, National Security Agency. | |
738 | ||
739 | This software may be used and distributed according to the terms | |
740 | of the GNU General Public License, incorporated herein by reference. | |
741 | ||
742 | The author may be reached as becker@scyld.com, or C/O | |
743 | Scyld Computing Corporation | |
744 | 410 Severn Ave., Suite 210 | |
745 | Annapolis MD 21403 | |
746 | ||
747 | This is the chip-specific code for many 8390-based ethernet adaptors. | |
748 | This is not a complete driver, it must be combined with board-specific | |
749 | code such as ne.c, wd.c, 3c503.c, etc. | |
750 | ||
751 | Seeing how at least eight drivers use this code, (not counting the | |
752 | PCMCIA ones either) it is easy to break some card by what seems like | |
753 | a simple innocent change. Please contact me or Donald if you think | |
754 | you have found something that needs changing. -- PG | |
755 | ||
756 | Changelog: | |
757 | ||
758 | Paul Gortmaker : remove set_bit lock, other cleanups. | |
759 | Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to | |
760 | ei_block_input() for eth_io_copy_and_sum(). | |
761 | Paul Gortmaker : exchange static int ei_pingpong for a #define, | |
762 | also add better Tx error handling. | |
763 | Paul Gortmaker : rewrite Rx overrun handling as per NS specs. | |
764 | Alexey Kuznetsov : use the 8390's six bit hash multicast filter. | |
765 | Paul Gortmaker : tweak ANK's above multicast changes a bit. | |
766 | Paul Gortmaker : update packet statistics for v2.1.x | |
25985edc | 767 | Alan Cox : support arbitrary stupid port mappings on the |
1da177e4 LT |
768 | 68K Macintosh. Support >16bit I/O spaces |
769 | Paul Gortmaker : add kmod support for auto-loading of the 8390 | |
770 | module by all drivers that require it. | |
771 | Alan Cox : Spinlocking work, added 'BUG_83C690' | |
772 | Paul Gortmaker : Separate out Tx timeout code from Tx path. | |
773 | ||
774 | Sources: | |
775 | The National Semiconductor LAN Databook, and the 3Com 3c503 databook. | |
776 | ||
777 | */ | |
778 | ||
1da177e4 LT |
779 | #include <linux/bitops.h> |
780 | #include <asm/irq.h> | |
781 | #include <linux/fcntl.h> | |
782 | #include <linux/in.h> | |
783 | #include <linux/interrupt.h> | |
784 | ||
1da177e4 LT |
785 | #define BUG_83C690 |
786 | ||
787 | /* These are the operational function interfaces to board-specific | |
788 | routines. | |
789 | void reset_8390(struct net_device *dev) | |
790 | Resets the board associated with DEV, including a hardware reset of | |
791 | the 8390. This is only called when there is a transmit timeout, and | |
792 | it is always followed by 8390_init(). | |
793 | void block_output(struct net_device *dev, int count, const unsigned char *buf, | |
794 | int start_page) | |
795 | Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The | |
796 | "page" value uses the 8390's 256-byte pages. | |
797 | void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page) | |
798 | Read the 4 byte, page aligned 8390 header. *If* there is a | |
799 | subsequent read, it will be of the rest of the packet. | |
800 | void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) | |
801 | Read COUNT bytes from the packet buffer into the skb data area. Start | |
802 | reading from RING_OFFSET, the address as the 8390 sees it. This will always | |
803 | follow the read of the 8390 header. | |
804 | */ | |
805 | #define ei_reset_8390 (ei_local->reset_8390) | |
806 | #define ei_block_output (ei_local->block_output) | |
807 | #define ei_block_input (ei_local->block_input) | |
808 | #define ei_get_8390_hdr (ei_local->get_8390_hdr) | |
809 | ||
1da177e4 LT |
810 | /* Index to functions. */ |
811 | static void ei_tx_intr(struct net_device *dev); | |
812 | static void ei_tx_err(struct net_device *dev); | |
1da177e4 LT |
813 | static void ei_receive(struct net_device *dev); |
814 | static void ei_rx_overrun(struct net_device *dev); | |
815 | ||
816 | /* Routines generic to NS8390-based boards. */ | |
817 | static void NS8390_trigger_send(struct net_device *dev, unsigned int length, | |
818 | int start_page); | |
1da177e4 LT |
819 | static void do_set_multicast_list(struct net_device *dev); |
820 | ||
821 | /* | |
822 | * SMP and the 8390 setup. | |
823 | * | |
25985edc | 824 | * The 8390 isn't exactly designed to be multithreaded on RX/TX. There is |
1da177e4 LT |
825 | * a page register that controls bank and packet buffer access. We guard |
826 | * this with ei_local->page_lock. Nobody should assume or set the page other | |
827 | * than zero when the lock is not held. Lock holders must restore page 0 | |
828 | * before unlocking. Even pure readers must take the lock to protect in | |
829 | * page 0. | |
830 | * | |
831 | * To make life difficult the chip can also be very slow. We therefore can't | |
832 | * just use spinlocks. For the longer lockups we disable the irq the device | |
833 | * sits on and hold the lock. We must hold the lock because there is a dual | |
834 | * processor case other than interrupts (get stats/set multicast list in | |
835 | * parallel with each other and transmit). | |
836 | * | |
837 | * Note: in theory we can just disable the irq on the card _but_ there is | |
838 | * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs" | |
839 | * enter lock, take the queued irq. So we waddle instead of flying. | |
840 | * | |
841 | * Finally by special arrangement for the purpose of being generally | |
842 | * annoying the transmit function is called bh atomic. That places | |
843 | * restrictions on the user context callers as disable_irq won't save | |
844 | * them. | |
845 | */ | |
846 | ||
847 | /** | |
848 | * ax_open - Open/initialize the board. | |
849 | * @dev: network device to initialize | |
850 | * | |
851 | * This routine goes all-out, setting everything | |
852 | * up anew at each open, even though many of these registers should only | |
853 | * need to be set once at boot. | |
854 | */ | |
855 | static int ax_open(struct net_device *dev) | |
856 | { | |
857 | unsigned long flags; | |
a887e220 | 858 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 | 859 | |
1da177e4 LT |
860 | /* |
861 | * Grab the page lock so we own the register set, then call | |
862 | * the init function. | |
863 | */ | |
864 | ||
865 | spin_lock_irqsave(&ei_local->page_lock, flags); | |
866 | AX88190_init(dev, 1); | |
867 | /* Set the flag before we drop the lock, That way the IRQ arrives | |
868 | after its set and we get no silly warnings */ | |
869 | netif_start_queue(dev); | |
870 | spin_unlock_irqrestore(&ei_local->page_lock, flags); | |
871 | ei_local->irqlock = 0; | |
872 | return 0; | |
873 | } | |
874 | ||
875 | #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock) | |
876 | ||
877 | /** | |
878 | * ax_close - shut down network device | |
879 | * @dev: network device to close | |
880 | * | |
881 | * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done. | |
882 | */ | |
6b2e4386 | 883 | static int ax_close(struct net_device *dev) |
1da177e4 LT |
884 | { |
885 | unsigned long flags; | |
886 | ||
887 | /* | |
888 | * Hold the page lock during close | |
889 | */ | |
890 | ||
891 | spin_lock_irqsave(&dev_lock(dev), flags); | |
892 | AX88190_init(dev, 0); | |
893 | spin_unlock_irqrestore(&dev_lock(dev), flags); | |
894 | netif_stop_queue(dev); | |
895 | return 0; | |
896 | } | |
897 | ||
898 | /** | |
70eb1bfd | 899 | * axnet_tx_timeout - handle transmit time out condition |
1da177e4 LT |
900 | * @dev: network device which has apparently fallen asleep |
901 | * | |
902 | * Called by kernel when device never acknowledges a transmit has | |
903 | * completed (or failed) - i.e. never posted a Tx related interrupt. | |
904 | */ | |
905 | ||
0290bd29 | 906 | static void axnet_tx_timeout(struct net_device *dev, unsigned int txqueue) |
1da177e4 LT |
907 | { |
908 | long e8390_base = dev->base_addr; | |
a887e220 | 909 | struct ei_device *ei_local = netdev_priv(dev); |
1ae5dc34 | 910 | int txsr, isr, tickssofar = jiffies - dev_trans_start(dev); |
1da177e4 LT |
911 | unsigned long flags; |
912 | ||
8e269165 | 913 | dev->stats.tx_errors++; |
1da177e4 LT |
914 | |
915 | spin_lock_irqsave(&ei_local->page_lock, flags); | |
916 | txsr = inb(e8390_base+EN0_TSR); | |
917 | isr = inb(e8390_base+EN0_ISR); | |
918 | spin_unlock_irqrestore(&ei_local->page_lock, flags); | |
919 | ||
c45f812f MW |
920 | netdev_dbg(dev, "Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n", |
921 | (txsr & ENTSR_ABT) ? "excess collisions." : | |
922 | (isr) ? "lost interrupt?" : "cable problem?", | |
923 | txsr, isr, tickssofar); | |
1da177e4 | 924 | |
8e269165 | 925 | if (!isr && !dev->stats.tx_packets) |
1da177e4 LT |
926 | { |
927 | /* The 8390 probably hasn't gotten on the cable yet. */ | |
928 | ei_local->interface_num ^= 1; /* Try a different xcvr. */ | |
929 | } | |
930 | ||
931 | /* Ugly but a reset can be slow, yet must be protected */ | |
932 | ||
bd5a9346 | 933 | spin_lock_irqsave(&ei_local->page_lock, flags); |
1da177e4 LT |
934 | |
935 | /* Try to restart the card. Perhaps the user has fixed something. */ | |
936 | ei_reset_8390(dev); | |
937 | AX88190_init(dev, 1); | |
938 | ||
bd5a9346 | 939 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
1da177e4 LT |
940 | netif_wake_queue(dev); |
941 | } | |
942 | ||
943 | /** | |
70eb1bfd | 944 | * axnet_start_xmit - begin packet transmission |
1da177e4 LT |
945 | * @skb: packet to be sent |
946 | * @dev: network device to which packet is sent | |
947 | * | |
948 | * Sends a packet to an 8390 network device. | |
949 | */ | |
950 | ||
dbf02fae SH |
951 | static netdev_tx_t axnet_start_xmit(struct sk_buff *skb, |
952 | struct net_device *dev) | |
1da177e4 LT |
953 | { |
954 | long e8390_base = dev->base_addr; | |
a887e220 | 955 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 LT |
956 | int length, send_length, output_page; |
957 | unsigned long flags; | |
958 | u8 packet[ETH_ZLEN]; | |
959 | ||
960 | netif_stop_queue(dev); | |
961 | ||
962 | length = skb->len; | |
963 | ||
964 | /* Mask interrupts from the ethercard. | |
965 | SMP: We have to grab the lock here otherwise the IRQ handler | |
966 | on another CPU can flip window and race the IRQ mask set. We end | |
967 | up trashing the mcast filter not disabling irqs if we don't lock */ | |
968 | ||
969 | spin_lock_irqsave(&ei_local->page_lock, flags); | |
970 | outb_p(0x00, e8390_base + EN0_IMR); | |
1da177e4 LT |
971 | |
972 | /* | |
973 | * Slow phase with lock held. | |
974 | */ | |
975 | ||
1da177e4 LT |
976 | ei_local->irqlock = 1; |
977 | ||
c61f26fa RK |
978 | send_length = max(length, ETH_ZLEN); |
979 | ||
1da177e4 LT |
980 | /* |
981 | * We have two Tx slots available for use. Find the first free | |
982 | * slot, and then perform some sanity checks. With two Tx bufs, | |
983 | * you get very close to transmitting back-to-back packets. With | |
984 | * only one Tx buf, the transmitter sits idle while you reload the | |
985 | * card, leaving a substantial gap between each transmitted packet. | |
986 | */ | |
987 | ||
988 | if (ei_local->tx1 == 0) | |
989 | { | |
990 | output_page = ei_local->tx_start_page; | |
991 | ei_local->tx1 = send_length; | |
c45f812f MW |
992 | if ((netif_msg_tx_queued(ei_local)) && |
993 | ei_local->tx2 > 0) | |
994 | netdev_dbg(dev, | |
995 | "idle transmitter tx2=%d, lasttx=%d, txing=%d\n", | |
996 | ei_local->tx2, ei_local->lasttx, | |
997 | ei_local->txing); | |
1da177e4 LT |
998 | } |
999 | else if (ei_local->tx2 == 0) | |
1000 | { | |
1001 | output_page = ei_local->tx_start_page + TX_PAGES/2; | |
1002 | ei_local->tx2 = send_length; | |
c45f812f MW |
1003 | if ((netif_msg_tx_queued(ei_local)) && |
1004 | ei_local->tx1 > 0) | |
1005 | netdev_dbg(dev, | |
1006 | "idle transmitter, tx1=%d, lasttx=%d, txing=%d\n", | |
1007 | ei_local->tx1, ei_local->lasttx, | |
1008 | ei_local->txing); | |
1da177e4 LT |
1009 | } |
1010 | else | |
1011 | { /* We should never get here. */ | |
c45f812f MW |
1012 | netif_dbg(ei_local, tx_err, dev, |
1013 | "No Tx buffers free! tx1=%d tx2=%d last=%d\n", | |
1014 | ei_local->tx1, ei_local->tx2, | |
1015 | ei_local->lasttx); | |
1da177e4 LT |
1016 | ei_local->irqlock = 0; |
1017 | netif_stop_queue(dev); | |
1018 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); | |
bd5a9346 | 1019 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
8e269165 | 1020 | dev->stats.tx_errors++; |
5b548140 | 1021 | return NETDEV_TX_BUSY; |
1da177e4 LT |
1022 | } |
1023 | ||
1024 | /* | |
1025 | * Okay, now upload the packet and trigger a send if the transmitter | |
1026 | * isn't already sending. If it is busy, the interrupt handler will | |
1027 | * trigger the send later, upon receiving a Tx done interrupt. | |
1028 | */ | |
1029 | ||
1030 | if (length == skb->len) | |
1031 | ei_block_output(dev, length, skb->data, output_page); | |
1032 | else { | |
1033 | memset(packet, 0, ETH_ZLEN); | |
d626f62b | 1034 | skb_copy_from_linear_data(skb, packet, skb->len); |
1da177e4 LT |
1035 | ei_block_output(dev, length, packet, output_page); |
1036 | } | |
1037 | ||
1038 | if (! ei_local->txing) | |
1039 | { | |
1040 | ei_local->txing = 1; | |
1041 | NS8390_trigger_send(dev, send_length, output_page); | |
860e9538 | 1042 | netif_trans_update(dev); |
1da177e4 LT |
1043 | if (output_page == ei_local->tx_start_page) |
1044 | { | |
1045 | ei_local->tx1 = -1; | |
1046 | ei_local->lasttx = -1; | |
1047 | } | |
1048 | else | |
1049 | { | |
1050 | ei_local->tx2 = -1; | |
1051 | ei_local->lasttx = -2; | |
1052 | } | |
1053 | } | |
1054 | else ei_local->txqueue++; | |
1055 | ||
1056 | if (ei_local->tx1 && ei_local->tx2) | |
1057 | netif_stop_queue(dev); | |
1058 | else | |
1059 | netif_start_queue(dev); | |
1060 | ||
1061 | /* Turn 8390 interrupts back on. */ | |
1062 | ei_local->irqlock = 0; | |
1063 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); | |
1064 | ||
bd5a9346 | 1065 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
1da177e4 LT |
1066 | |
1067 | dev_kfree_skb (skb); | |
8e269165 | 1068 | dev->stats.tx_bytes += send_length; |
1da177e4 | 1069 | |
6ed10654 | 1070 | return NETDEV_TX_OK; |
1da177e4 LT |
1071 | } |
1072 | ||
1073 | /** | |
1074 | * ax_interrupt - handle the interrupts from an 8390 | |
1075 | * @irq: interrupt number | |
1076 | * @dev_id: a pointer to the net_device | |
1da177e4 LT |
1077 | * |
1078 | * Handle the ether interface interrupts. We pull packets from | |
1079 | * the 8390 via the card specific functions and fire them at the networking | |
1080 | * stack. We also handle transmit completions and wake the transmit path if | |
1081 | * necessary. We also update the counters and do other housekeeping as | |
1082 | * needed. | |
1083 | */ | |
1084 | ||
7d12e780 | 1085 | static irqreturn_t ax_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1086 | { |
1087 | struct net_device *dev = dev_id; | |
1088 | long e8390_base; | |
1089 | int interrupts, nr_serviced = 0, i; | |
1090 | struct ei_device *ei_local; | |
1091 | int handled = 0; | |
ab83a389 | 1092 | unsigned long flags; |
1da177e4 | 1093 | |
1da177e4 | 1094 | e8390_base = dev->base_addr; |
c31f28e7 | 1095 | ei_local = netdev_priv(dev); |
1da177e4 LT |
1096 | |
1097 | /* | |
1098 | * Protect the irq test too. | |
1099 | */ | |
1100 | ||
ab83a389 | 1101 | spin_lock_irqsave(&ei_local->page_lock, flags); |
1da177e4 | 1102 | |
636b8116 | 1103 | if (ei_local->irqlock) { |
1da177e4 | 1104 | #if 1 /* This might just be an interrupt for a PCI device sharing this line */ |
636b8116 | 1105 | const char *msg; |
1da177e4 | 1106 | /* The "irqlock" check is only for testing. */ |
636b8116 JP |
1107 | if (ei_local->irqlock) |
1108 | msg = "Interrupted while interrupts are masked!"; | |
1109 | else | |
1110 | msg = "Reentering the interrupt handler!"; | |
1111 | netdev_info(dev, "%s, isr=%#2x imr=%#2x\n", | |
1112 | msg, | |
1113 | inb_p(e8390_base + EN0_ISR), | |
1114 | inb_p(e8390_base + EN0_IMR)); | |
1da177e4 | 1115 | #endif |
ab83a389 | 1116 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
1da177e4 LT |
1117 | return IRQ_NONE; |
1118 | } | |
c45f812f MW |
1119 | |
1120 | netif_dbg(ei_local, intr, dev, "interrupt(isr=%#2.2x)\n", | |
1121 | inb_p(e8390_base + EN0_ISR)); | |
1da177e4 LT |
1122 | |
1123 | outb_p(0x00, e8390_base + EN0_ISR); | |
1124 | ei_local->irqlock = 1; | |
1125 | ||
1126 | /* !!Assumption!! -- we stay in page 0. Don't break this. */ | |
8e95a202 JP |
1127 | while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0 && |
1128 | ++nr_serviced < MAX_SERVICE) | |
1da177e4 LT |
1129 | { |
1130 | if (!netif_running(dev) || (interrupts == 0xff)) { | |
c45f812f MW |
1131 | netif_warn(ei_local, intr, dev, |
1132 | "interrupt from stopped card\n"); | |
1da177e4 LT |
1133 | outb_p(interrupts, e8390_base + EN0_ISR); |
1134 | interrupts = 0; | |
1135 | break; | |
1136 | } | |
1137 | handled = 1; | |
1138 | ||
1139 | /* AX88190 bug fix. */ | |
1140 | outb_p(interrupts, e8390_base + EN0_ISR); | |
1141 | for (i = 0; i < 10; i++) { | |
1142 | if (!(inb(e8390_base + EN0_ISR) & interrupts)) | |
1143 | break; | |
1144 | outb_p(0, e8390_base + EN0_ISR); | |
1145 | outb_p(interrupts, e8390_base + EN0_ISR); | |
1146 | } | |
1147 | if (interrupts & ENISR_OVER) | |
1148 | ei_rx_overrun(dev); | |
1149 | else if (interrupts & (ENISR_RX+ENISR_RX_ERR)) | |
1150 | { | |
1151 | /* Got a good (?) packet. */ | |
1152 | ei_receive(dev); | |
1153 | } | |
1154 | /* Push the next to-transmit packet through. */ | |
1155 | if (interrupts & ENISR_TX) | |
1156 | ei_tx_intr(dev); | |
1157 | else if (interrupts & ENISR_TX_ERR) | |
1158 | ei_tx_err(dev); | |
1159 | ||
1160 | if (interrupts & ENISR_COUNTERS) | |
1161 | { | |
8e269165 PZ |
1162 | dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0); |
1163 | dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1); | |
1164 | dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2); | |
1da177e4 LT |
1165 | } |
1166 | } | |
1167 | ||
c45f812f | 1168 | if (interrupts && (netif_msg_intr(ei_local))) |
1da177e4 LT |
1169 | { |
1170 | handled = 1; | |
1171 | if (nr_serviced >= MAX_SERVICE) | |
1172 | { | |
1173 | /* 0xFF is valid for a card removal */ | |
c45f812f MW |
1174 | if (interrupts != 0xFF) |
1175 | netdev_warn(dev, | |
1176 | "Too much work at interrupt, status %#2.2x\n", | |
636b8116 | 1177 | interrupts); |
1da177e4 LT |
1178 | outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */ |
1179 | } else { | |
636b8116 JP |
1180 | netdev_warn(dev, "unknown interrupt %#2x\n", |
1181 | interrupts); | |
1da177e4 LT |
1182 | outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */ |
1183 | } | |
1184 | } | |
1185 | ||
1186 | /* Turn 8390 interrupts back on. */ | |
1187 | ei_local->irqlock = 0; | |
1188 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); | |
1189 | ||
ab83a389 | 1190 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
1da177e4 LT |
1191 | return IRQ_RETVAL(handled); |
1192 | } | |
1193 | ||
1194 | /** | |
1195 | * ei_tx_err - handle transmitter error | |
1196 | * @dev: network device which threw the exception | |
1197 | * | |
1198 | * A transmitter error has happened. Most likely excess collisions (which | |
1199 | * is a fairly normal condition). If the error is one where the Tx will | |
1200 | * have been aborted, we try and send another one right away, instead of | |
1201 | * letting the failed packet sit and collect dust in the Tx buffer. This | |
1202 | * is a much better solution as it avoids kernel based Tx timeouts, and | |
1203 | * an unnecessary card reset. | |
1204 | * | |
1205 | * Called with lock held. | |
1206 | */ | |
1207 | ||
1208 | static void ei_tx_err(struct net_device *dev) | |
1209 | { | |
1210 | long e8390_base = dev->base_addr; | |
1da177e4 LT |
1211 | unsigned char txsr = inb_p(e8390_base+EN0_TSR); |
1212 | unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU); | |
1213 | ||
1214 | #ifdef VERBOSE_ERROR_DUMP | |
c45f812f | 1215 | netdev_dbg(dev, "transmitter error (%#2x):", txsr); |
1da177e4 | 1216 | if (txsr & ENTSR_ABT) |
636b8116 | 1217 | pr_cont(" excess-collisions"); |
1da177e4 | 1218 | if (txsr & ENTSR_ND) |
636b8116 | 1219 | pr_cont(" non-deferral"); |
1da177e4 | 1220 | if (txsr & ENTSR_CRS) |
636b8116 | 1221 | pr_cont(" lost-carrier"); |
1da177e4 | 1222 | if (txsr & ENTSR_FU) |
636b8116 | 1223 | pr_cont(" FIFO-underrun"); |
1da177e4 | 1224 | if (txsr & ENTSR_CDH) |
636b8116 JP |
1225 | pr_cont(" lost-heartbeat"); |
1226 | pr_cont("\n"); | |
1da177e4 LT |
1227 | #endif |
1228 | ||
1229 | if (tx_was_aborted) | |
1230 | ei_tx_intr(dev); | |
1231 | else | |
1232 | { | |
8e269165 PZ |
1233 | dev->stats.tx_errors++; |
1234 | if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++; | |
1235 | if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++; | |
1236 | if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++; | |
1da177e4 LT |
1237 | } |
1238 | } | |
1239 | ||
1240 | /** | |
1241 | * ei_tx_intr - transmit interrupt handler | |
1242 | * @dev: network device for which tx intr is handled | |
1243 | * | |
1244 | * We have finished a transmit: check for errors and then trigger the next | |
1245 | * packet to be sent. Called with lock held. | |
1246 | */ | |
1247 | ||
1248 | static void ei_tx_intr(struct net_device *dev) | |
1249 | { | |
1250 | long e8390_base = dev->base_addr; | |
a887e220 | 1251 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 LT |
1252 | int status = inb(e8390_base + EN0_TSR); |
1253 | ||
1254 | /* | |
1255 | * There are two Tx buffers, see which one finished, and trigger | |
1256 | * the send of another one if it exists. | |
1257 | */ | |
1258 | ei_local->txqueue--; | |
1259 | ||
1260 | if (ei_local->tx1 < 0) | |
1261 | { | |
1262 | if (ei_local->lasttx != 1 && ei_local->lasttx != -1) | |
636b8116 JP |
1263 | netdev_err(dev, "%s: bogus last_tx_buffer %d, tx1=%d\n", |
1264 | ei_local->name, ei_local->lasttx, | |
1265 | ei_local->tx1); | |
1da177e4 LT |
1266 | ei_local->tx1 = 0; |
1267 | if (ei_local->tx2 > 0) | |
1268 | { | |
1269 | ei_local->txing = 1; | |
1270 | NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6); | |
860e9538 | 1271 | netif_trans_update(dev); |
1da177e4 LT |
1272 | ei_local->tx2 = -1, |
1273 | ei_local->lasttx = 2; | |
1274 | } | |
1275 | else ei_local->lasttx = 20, ei_local->txing = 0; | |
1276 | } | |
1277 | else if (ei_local->tx2 < 0) | |
1278 | { | |
1279 | if (ei_local->lasttx != 2 && ei_local->lasttx != -2) | |
c45f812f MW |
1280 | netdev_err(dev, "%s: bogus last_tx_buffer %d, tx2=%d\n", |
1281 | ei_local->name, ei_local->lasttx, | |
1282 | ei_local->tx2); | |
1da177e4 LT |
1283 | ei_local->tx2 = 0; |
1284 | if (ei_local->tx1 > 0) | |
1285 | { | |
1286 | ei_local->txing = 1; | |
1287 | NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page); | |
860e9538 | 1288 | netif_trans_update(dev); |
1da177e4 LT |
1289 | ei_local->tx1 = -1; |
1290 | ei_local->lasttx = 1; | |
1291 | } | |
1292 | else | |
1293 | ei_local->lasttx = 10, ei_local->txing = 0; | |
1294 | } | |
636b8116 JP |
1295 | // else |
1296 | // netdev_warn(dev, "unexpected TX-done interrupt, lasttx=%d\n", | |
1297 | // ei_local->lasttx); | |
1da177e4 LT |
1298 | |
1299 | /* Minimize Tx latency: update the statistics after we restart TXing. */ | |
1300 | if (status & ENTSR_COL) | |
8e269165 | 1301 | dev->stats.collisions++; |
1da177e4 | 1302 | if (status & ENTSR_PTX) |
8e269165 | 1303 | dev->stats.tx_packets++; |
1da177e4 LT |
1304 | else |
1305 | { | |
8e269165 | 1306 | dev->stats.tx_errors++; |
1da177e4 LT |
1307 | if (status & ENTSR_ABT) |
1308 | { | |
8e269165 PZ |
1309 | dev->stats.tx_aborted_errors++; |
1310 | dev->stats.collisions += 16; | |
1da177e4 LT |
1311 | } |
1312 | if (status & ENTSR_CRS) | |
8e269165 | 1313 | dev->stats.tx_carrier_errors++; |
1da177e4 | 1314 | if (status & ENTSR_FU) |
8e269165 | 1315 | dev->stats.tx_fifo_errors++; |
1da177e4 | 1316 | if (status & ENTSR_CDH) |
8e269165 | 1317 | dev->stats.tx_heartbeat_errors++; |
1da177e4 | 1318 | if (status & ENTSR_OWC) |
8e269165 | 1319 | dev->stats.tx_window_errors++; |
1da177e4 LT |
1320 | } |
1321 | netif_wake_queue(dev); | |
1322 | } | |
1323 | ||
1324 | /** | |
1325 | * ei_receive - receive some packets | |
1326 | * @dev: network device with which receive will be run | |
1327 | * | |
1328 | * We have a good packet(s), get it/them out of the buffers. | |
1329 | * Called with lock held. | |
1330 | */ | |
1331 | ||
1332 | static void ei_receive(struct net_device *dev) | |
1333 | { | |
1334 | long e8390_base = dev->base_addr; | |
a887e220 | 1335 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 LT |
1336 | unsigned char rxing_page, this_frame, next_frame; |
1337 | unsigned short current_offset; | |
1338 | int rx_pkt_count = 0; | |
1339 | struct e8390_pkt_hdr rx_frame; | |
1340 | ||
1341 | while (++rx_pkt_count < 10) | |
1342 | { | |
1343 | int pkt_len, pkt_stat; | |
1344 | ||
1345 | /* Get the rx page (incoming packet pointer). */ | |
1346 | rxing_page = inb_p(e8390_base + EN1_CURPAG -1); | |
1347 | ||
1348 | /* Remove one frame from the ring. Boundary is always a page behind. */ | |
1349 | this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1; | |
1350 | if (this_frame >= ei_local->stop_page) | |
1351 | this_frame = ei_local->rx_start_page; | |
1352 | ||
1353 | /* Someday we'll omit the previous, iff we never get this message. | |
1354 | (There is at least one clone claimed to have a problem.) | |
1355 | ||
1356 | Keep quiet if it looks like a card removal. One problem here | |
1357 | is that some clones crash in roughly the same way. | |
1358 | */ | |
c45f812f MW |
1359 | if ((netif_msg_rx_err(ei_local)) && |
1360 | this_frame != ei_local->current_page && | |
1361 | (this_frame != 0x0 || rxing_page != 0xFF)) | |
1362 | netdev_err(dev, "mismatched read page pointers %2x vs %2x\n", | |
1363 | this_frame, ei_local->current_page); | |
1da177e4 LT |
1364 | |
1365 | if (this_frame == rxing_page) /* Read all the frames? */ | |
1366 | break; /* Done for now */ | |
1367 | ||
1368 | current_offset = this_frame << 8; | |
1369 | ei_get_8390_hdr(dev, &rx_frame, this_frame); | |
1370 | ||
1371 | pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr); | |
1372 | pkt_stat = rx_frame.status; | |
1373 | ||
1374 | next_frame = this_frame + 1 + ((pkt_len+4)>>8); | |
1375 | ||
1376 | if (pkt_len < 60 || pkt_len > 1518) | |
1377 | { | |
c45f812f MW |
1378 | netif_err(ei_local, rx_err, dev, |
1379 | "bogus packet size: %d, status=%#2x nxpg=%#2x\n", | |
1380 | rx_frame.count, rx_frame.status, | |
1381 | rx_frame.next); | |
8e269165 PZ |
1382 | dev->stats.rx_errors++; |
1383 | dev->stats.rx_length_errors++; | |
1da177e4 LT |
1384 | } |
1385 | else if ((pkt_stat & 0x0F) == ENRSR_RXOK) | |
1386 | { | |
1387 | struct sk_buff *skb; | |
1388 | ||
1d266430 | 1389 | skb = netdev_alloc_skb(dev, pkt_len + 2); |
1da177e4 LT |
1390 | if (skb == NULL) |
1391 | { | |
c45f812f MW |
1392 | netif_err(ei_local, rx_err, dev, |
1393 | "Couldn't allocate a sk_buff of size %d\n", | |
1394 | pkt_len); | |
8e269165 | 1395 | dev->stats.rx_dropped++; |
1da177e4 LT |
1396 | break; |
1397 | } | |
1398 | else | |
1399 | { | |
1400 | skb_reserve(skb,2); /* IP headers on 16 byte boundaries */ | |
1da177e4 LT |
1401 | skb_put(skb, pkt_len); /* Make room */ |
1402 | ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame)); | |
1403 | skb->protocol=eth_type_trans(skb,dev); | |
1404 | netif_rx(skb); | |
8e269165 PZ |
1405 | dev->stats.rx_packets++; |
1406 | dev->stats.rx_bytes += pkt_len; | |
1da177e4 | 1407 | if (pkt_stat & ENRSR_PHY) |
8e269165 | 1408 | dev->stats.multicast++; |
1da177e4 LT |
1409 | } |
1410 | } | |
1411 | else | |
1412 | { | |
c45f812f MW |
1413 | netif_err(ei_local, rx_err, dev, |
1414 | "bogus packet: status=%#2x nxpg=%#2x size=%d\n", | |
1415 | rx_frame.status, rx_frame.next, | |
1416 | rx_frame.count); | |
8e269165 | 1417 | dev->stats.rx_errors++; |
1da177e4 LT |
1418 | /* NB: The NIC counts CRC, frame and missed errors. */ |
1419 | if (pkt_stat & ENRSR_FO) | |
8e269165 | 1420 | dev->stats.rx_fifo_errors++; |
1da177e4 LT |
1421 | } |
1422 | next_frame = rx_frame.next; | |
1423 | ||
1424 | /* This _should_ never happen: it's here for avoiding bad clones. */ | |
1425 | if (next_frame >= ei_local->stop_page) { | |
636b8116 JP |
1426 | netdev_info(dev, "next frame inconsistency, %#2x\n", |
1427 | next_frame); | |
1da177e4 LT |
1428 | next_frame = ei_local->rx_start_page; |
1429 | } | |
1430 | ei_local->current_page = next_frame; | |
1431 | outb_p(next_frame-1, e8390_base+EN0_BOUNDARY); | |
1432 | } | |
1da177e4 LT |
1433 | } |
1434 | ||
1435 | /** | |
1436 | * ei_rx_overrun - handle receiver overrun | |
1437 | * @dev: network device which threw exception | |
1438 | * | |
1439 | * We have a receiver overrun: we have to kick the 8390 to get it started | |
1440 | * again. Problem is that you have to kick it exactly as NS prescribes in | |
1441 | * the updated datasheets, or "the NIC may act in an unpredictable manner." | |
1442 | * This includes causing "the NIC to defer indefinitely when it is stopped | |
1443 | * on a busy network." Ugh. | |
1444 | * Called with lock held. Don't call this with the interrupts off or your | |
1445 | * computer will hate you - it takes 10ms or so. | |
1446 | */ | |
1447 | ||
1448 | static void ei_rx_overrun(struct net_device *dev) | |
1449 | { | |
abac0d3f | 1450 | struct axnet_dev *info = PRIV(dev); |
1da177e4 LT |
1451 | long e8390_base = dev->base_addr; |
1452 | unsigned char was_txing, must_resend = 0; | |
c45f812f | 1453 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 LT |
1454 | |
1455 | /* | |
1456 | * Record whether a Tx was in progress and then issue the | |
1457 | * stop command. | |
1458 | */ | |
1459 | was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS; | |
1460 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); | |
c45f812f MW |
1461 | |
1462 | netif_dbg(ei_local, rx_err, dev, "Receiver overrun\n"); | |
8e269165 | 1463 | dev->stats.rx_over_errors++; |
1da177e4 LT |
1464 | |
1465 | /* | |
1466 | * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total. | |
785e8cc3 | 1467 | * We wait at least 2ms. |
1da177e4 LT |
1468 | */ |
1469 | ||
785e8cc3 | 1470 | mdelay(2); |
1da177e4 LT |
1471 | |
1472 | /* | |
1473 | * Reset RBCR[01] back to zero as per magic incantation. | |
1474 | */ | |
1475 | outb_p(0x00, e8390_base+EN0_RCNTLO); | |
1476 | outb_p(0x00, e8390_base+EN0_RCNTHI); | |
1477 | ||
1478 | /* | |
1479 | * See if any Tx was interrupted or not. According to NS, this | |
1480 | * step is vital, and skipping it will cause no end of havoc. | |
1481 | */ | |
1482 | ||
1483 | if (was_txing) | |
1484 | { | |
1485 | unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR); | |
1486 | if (!tx_completed) | |
1487 | must_resend = 1; | |
1488 | } | |
1489 | ||
1490 | /* | |
1491 | * Have to enter loopback mode and then restart the NIC before | |
1492 | * you are allowed to slurp packets up off the ring. | |
1493 | */ | |
1494 | outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); | |
1495 | outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD); | |
1496 | ||
1497 | /* | |
1498 | * Clear the Rx ring of all the debris, and ack the interrupt. | |
1499 | */ | |
1500 | ei_receive(dev); | |
1501 | ||
1502 | /* | |
1503 | * Leave loopback mode, and resend any packet that got stopped. | |
1504 | */ | |
1505 | outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR); | |
1506 | if (must_resend) | |
1507 | outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD); | |
1508 | } | |
1509 | ||
1510 | /* | |
1511 | * Collect the stats. This is called unlocked and from several contexts. | |
1512 | */ | |
1513 | ||
1514 | static struct net_device_stats *get_stats(struct net_device *dev) | |
1515 | { | |
1516 | long ioaddr = dev->base_addr; | |
a887e220 | 1517 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 LT |
1518 | unsigned long flags; |
1519 | ||
1520 | /* If the card is stopped, just return the present stats. */ | |
1521 | if (!netif_running(dev)) | |
8e269165 | 1522 | return &dev->stats; |
1da177e4 LT |
1523 | |
1524 | spin_lock_irqsave(&ei_local->page_lock,flags); | |
1525 | /* Read the counter registers, assuming we are in page 0. */ | |
8e269165 PZ |
1526 | dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0); |
1527 | dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1); | |
1528 | dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2); | |
1da177e4 LT |
1529 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
1530 | ||
8e269165 | 1531 | return &dev->stats; |
1da177e4 LT |
1532 | } |
1533 | ||
b8ab2dc3 K |
1534 | /* |
1535 | * Form the 64 bit 8390 multicast table from the linked list of addresses | |
1536 | * associated with this dev structure. | |
1537 | */ | |
1538 | ||
1539 | static inline void make_mc_bits(u8 *bits, struct net_device *dev) | |
1540 | { | |
22bedad3 | 1541 | struct netdev_hw_addr *ha; |
b8ab2dc3 K |
1542 | u32 crc; |
1543 | ||
22bedad3 JP |
1544 | netdev_for_each_mc_addr(ha, dev) { |
1545 | crc = ether_crc(ETH_ALEN, ha->addr); | |
b8ab2dc3 K |
1546 | /* |
1547 | * The 8390 uses the 6 most significant bits of the | |
1548 | * CRC to index the multicast table. | |
1549 | */ | |
1550 | bits[crc>>29] |= (1<<((crc>>26)&7)); | |
1551 | } | |
1552 | } | |
1553 | ||
1da177e4 LT |
1554 | /** |
1555 | * do_set_multicast_list - set/clear multicast filter | |
1556 | * @dev: net device for which multicast filter is adjusted | |
1557 | * | |
b8ab2dc3 K |
1558 | * Set or clear the multicast filter for this adaptor. |
1559 | * Must be called with lock held. | |
1da177e4 LT |
1560 | */ |
1561 | ||
1562 | static void do_set_multicast_list(struct net_device *dev) | |
1563 | { | |
1564 | long e8390_base = dev->base_addr; | |
b8ab2dc3 | 1565 | int i; |
a887e220 | 1566 | struct ei_device *ei_local = netdev_priv(dev); |
b8ab2dc3 K |
1567 | |
1568 | if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) { | |
1569 | memset(ei_local->mcfilter, 0, 8); | |
91fea585 | 1570 | if (!netdev_mc_empty(dev)) |
b8ab2dc3 K |
1571 | make_mc_bits(ei_local->mcfilter, dev); |
1572 | } else { | |
1573 | /* set to accept-all */ | |
1574 | memset(ei_local->mcfilter, 0xFF, 8); | |
1575 | } | |
1576 | ||
b8ab2dc3 K |
1577 | outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD); |
1578 | for(i = 0; i < 8; i++) | |
1579 | { | |
1580 | outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i)); | |
1581 | } | |
1582 | outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD); | |
1da177e4 LT |
1583 | |
1584 | if(dev->flags&IFF_PROMISC) | |
1585 | outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR); | |
91fea585 | 1586 | else if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) |
1da177e4 LT |
1587 | outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR); |
1588 | else | |
1589 | outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); | |
f905703a K |
1590 | |
1591 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD); | |
1da177e4 LT |
1592 | } |
1593 | ||
1594 | /* | |
1595 | * Called without lock held. This is invoked from user context and may | |
1596 | * be parallel to just about everything else. Its also fairly quick and | |
1597 | * not called too often. Must protect against both bh and irq users | |
1598 | */ | |
1599 | ||
1600 | static void set_multicast_list(struct net_device *dev) | |
1601 | { | |
1602 | unsigned long flags; | |
1603 | ||
1604 | spin_lock_irqsave(&dev_lock(dev), flags); | |
1605 | do_set_multicast_list(dev); | |
1606 | spin_unlock_irqrestore(&dev_lock(dev), flags); | |
1607 | } | |
1608 | ||
1da177e4 LT |
1609 | /* This page of functions should be 8390 generic */ |
1610 | /* Follow National Semi's recommendations for initializing the "NIC". */ | |
1611 | ||
1612 | /** | |
1613 | * AX88190_init - initialize 8390 hardware | |
1614 | * @dev: network device to initialize | |
1615 | * @startp: boolean. non-zero value to initiate chip processing | |
1616 | * | |
1617 | * Must be called with lock held. | |
1618 | */ | |
1619 | ||
1620 | static void AX88190_init(struct net_device *dev, int startp) | |
1621 | { | |
abac0d3f | 1622 | struct axnet_dev *info = PRIV(dev); |
1da177e4 | 1623 | long e8390_base = dev->base_addr; |
a887e220 | 1624 | struct ei_device *ei_local = netdev_priv(dev); |
1da177e4 LT |
1625 | int i; |
1626 | int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48; | |
1627 | ||
1628 | if(sizeof(struct e8390_pkt_hdr)!=4) | |
1629 | panic("8390.c: header struct mispacked\n"); | |
1630 | /* Follow National Semi's recommendations for initing the DP83902. */ | |
1631 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */ | |
1632 | outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */ | |
1633 | /* Clear the remote byte count registers. */ | |
1634 | outb_p(0x00, e8390_base + EN0_RCNTLO); | |
1635 | outb_p(0x00, e8390_base + EN0_RCNTHI); | |
1636 | /* Set to monitor and loopback mode -- this is vital!. */ | |
1637 | outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */ | |
1638 | outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */ | |
1639 | /* Set the transmit page and receive ring. */ | |
1640 | outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR); | |
1641 | ei_local->tx1 = ei_local->tx2 = 0; | |
1642 | outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG); | |
1643 | outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/ | |
1644 | ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */ | |
1645 | outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG); | |
1646 | /* Clear the pending interrupts and mask. */ | |
1647 | outb_p(0xFF, e8390_base + EN0_ISR); | |
1648 | outb_p(0x00, e8390_base + EN0_IMR); | |
1649 | ||
1650 | /* Copy the station address into the DS8390 registers. */ | |
1651 | ||
1652 | outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */ | |
1653 | for(i = 0; i < 6; i++) | |
1654 | { | |
1655 | outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i)); | |
1656 | if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i]) | |
636b8116 | 1657 | netdev_err(dev, "Hw. address read/write mismap %d\n", i); |
1da177e4 | 1658 | } |
1da177e4 LT |
1659 | |
1660 | outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG); | |
1661 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); | |
1662 | ||
1663 | netif_start_queue(dev); | |
1664 | ei_local->tx1 = ei_local->tx2 = 0; | |
1665 | ei_local->txing = 0; | |
1666 | ||
ad3620a0 KK |
1667 | if (info->flags & IS_AX88790) /* select Internal PHY */ |
1668 | outb(0x10, e8390_base + AXNET_GPIO); | |
1669 | ||
1da177e4 LT |
1670 | if (startp) |
1671 | { | |
1672 | outb_p(0xff, e8390_base + EN0_ISR); | |
1673 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); | |
1674 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD); | |
1675 | outb_p(E8390_TXCONFIG | info->duplex_flag, | |
1676 | e8390_base + EN0_TXCR); /* xmit on. */ | |
1677 | /* 3c503 TechMan says rxconfig only after the NIC is started. */ | |
1678 | outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */ | |
1679 | do_set_multicast_list(dev); /* (re)load the mcast table */ | |
1680 | } | |
1681 | } | |
1682 | ||
1683 | /* Trigger a transmit start, assuming the length is valid. | |
1684 | Always called with the page lock held */ | |
1685 | ||
1686 | static void NS8390_trigger_send(struct net_device *dev, unsigned int length, | |
1687 | int start_page) | |
1688 | { | |
1689 | long e8390_base = dev->base_addr; | |
a887e220 | 1690 | struct ei_device *ei_local __attribute((unused)) = netdev_priv(dev); |
1da177e4 LT |
1691 | |
1692 | if (inb_p(e8390_base) & E8390_TRANS) | |
1693 | { | |
636b8116 | 1694 | netdev_warn(dev, "trigger_send() called with the transmitter busy\n"); |
1da177e4 LT |
1695 | return; |
1696 | } | |
1697 | outb_p(length & 0xff, e8390_base + EN0_TCNTLO); | |
1698 | outb_p(length >> 8, e8390_base + EN0_TCNTHI); | |
1699 | outb_p(start_page, e8390_base + EN0_TPSR); | |
1700 | outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD); | |
1701 | } |