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 | ||
27 | #include <linux/kernel.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/ptrace.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/string.h> | |
33 | #include <linux/timer.h> | |
34 | #include <linux/delay.h> | |
35 | #include <linux/spinlock.h> | |
36 | #include <linux/ethtool.h> | |
37 | #include <linux/netdevice.h> | |
3dd20516 | 38 | #include <linux/etherdevice.h> |
b8ab2dc3 | 39 | #include <linux/crc32.h> |
1da177e4 LT |
40 | #include "../8390.h" |
41 | ||
1da177e4 LT |
42 | #include <pcmcia/cs_types.h> |
43 | #include <pcmcia/cs.h> | |
44 | #include <pcmcia/cistpl.h> | |
45 | #include <pcmcia/ciscode.h> | |
46 | #include <pcmcia/ds.h> | |
47 | #include <pcmcia/cisreg.h> | |
48 | ||
49 | #include <asm/io.h> | |
50 | #include <asm/system.h> | |
51 | #include <asm/byteorder.h> | |
52 | #include <asm/uaccess.h> | |
53 | ||
54 | #define AXNET_CMD 0x00 | |
55 | #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */ | |
56 | #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */ | |
57 | #define AXNET_MII_EEP 0x14 /* Offset of MII access port */ | |
58 | #define AXNET_TEST 0x15 /* Offset of TEST Register port */ | |
59 | #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */ | |
60 | ||
61 | #define AXNET_START_PG 0x40 /* First page of TX buffer */ | |
62 | #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */ | |
63 | ||
64 | #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */ | |
65 | ||
66 | #define IS_AX88190 0x0001 | |
67 | #define IS_AX88790 0x0002 | |
68 | ||
69 | /*====================================================================*/ | |
70 | ||
71 | /* Module parameters */ | |
72 | ||
73 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
74 | MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver"); | |
75 | MODULE_LICENSE("GPL"); | |
76 | ||
77 | #ifdef PCMCIA_DEBUG | |
78 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) | |
79 | ||
80 | INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG); | |
81 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) | |
82 | static char *version = | |
83 | "axnet_cs.c 1.28 2002/06/29 06:27:37 (David Hinds)"; | |
84 | #else | |
85 | #define DEBUG(n, args...) | |
86 | #endif | |
87 | ||
88 | /*====================================================================*/ | |
89 | ||
15b99ac1 | 90 | static int axnet_config(struct pcmcia_device *link); |
fba395ee | 91 | static void axnet_release(struct pcmcia_device *link); |
1da177e4 LT |
92 | static int axnet_open(struct net_device *dev); |
93 | static int axnet_close(struct net_device *dev); | |
94 | static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
3dd20516 SH |
95 | static int axnet_start_xmit(struct sk_buff *skb, struct net_device *dev); |
96 | static struct net_device_stats *get_stats(struct net_device *dev); | |
97 | static void set_multicast_list(struct net_device *dev); | |
98 | static void axnet_tx_timeout(struct net_device *dev); | |
7282d491 | 99 | static const struct ethtool_ops netdev_ethtool_ops; |
7d12e780 | 100 | static irqreturn_t ei_irq_wrapper(int irq, void *dev_id); |
1da177e4 LT |
101 | static void ei_watchdog(u_long arg); |
102 | static void axnet_reset_8390(struct net_device *dev); | |
103 | ||
906da809 OJ |
104 | static int mdio_read(unsigned int addr, int phy_id, int loc); |
105 | static void mdio_write(unsigned int addr, int phy_id, int loc, int value); | |
1da177e4 LT |
106 | |
107 | static void get_8390_hdr(struct net_device *, | |
108 | struct e8390_pkt_hdr *, int); | |
109 | static void block_input(struct net_device *dev, int count, | |
110 | struct sk_buff *skb, int ring_offset); | |
111 | static void block_output(struct net_device *dev, int count, | |
112 | const u_char *buf, const int start_page); | |
113 | ||
cc3b4866 | 114 | static void axnet_detach(struct pcmcia_device *p_dev); |
1da177e4 | 115 | |
1da177e4 LT |
116 | static void AX88190_init(struct net_device *dev, int startp); |
117 | static int ax_open(struct net_device *dev); | |
118 | static int ax_close(struct net_device *dev); | |
7d12e780 | 119 | static irqreturn_t ax_interrupt(int irq, void *dev_id); |
1da177e4 LT |
120 | |
121 | /*====================================================================*/ | |
122 | ||
123 | typedef struct axnet_dev_t { | |
fd238232 | 124 | struct pcmcia_device *p_dev; |
1da177e4 LT |
125 | dev_node_t node; |
126 | caddr_t base; | |
127 | struct timer_list watchdog; | |
128 | int stale, fast_poll; | |
129 | u_short link_status; | |
130 | u_char duplex_flag; | |
131 | int phy_id; | |
132 | int flags; | |
133 | } axnet_dev_t; | |
134 | ||
135 | static inline axnet_dev_t *PRIV(struct net_device *dev) | |
136 | { | |
137 | void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device); | |
138 | return p; | |
139 | } | |
140 | ||
3dd20516 SH |
141 | static const struct net_device_ops axnet_netdev_ops = { |
142 | .ndo_open = axnet_open, | |
143 | .ndo_stop = axnet_close, | |
144 | .ndo_do_ioctl = axnet_ioctl, | |
145 | .ndo_start_xmit = axnet_start_xmit, | |
146 | .ndo_tx_timeout = axnet_tx_timeout, | |
147 | .ndo_get_stats = get_stats, | |
148 | .ndo_set_multicast_list = set_multicast_list, | |
149 | .ndo_change_mtu = eth_change_mtu, | |
150 | .ndo_set_mac_address = eth_mac_addr, | |
151 | .ndo_validate_addr = eth_validate_addr, | |
152 | }; | |
153 | ||
1da177e4 LT |
154 | /*====================================================================== |
155 | ||
156 | axnet_attach() creates an "instance" of the driver, allocating | |
157 | local data structures for one device. The device is registered | |
158 | with Card Services. | |
159 | ||
160 | ======================================================================*/ | |
161 | ||
15b99ac1 | 162 | static int axnet_probe(struct pcmcia_device *link) |
1da177e4 LT |
163 | { |
164 | axnet_dev_t *info; | |
1da177e4 | 165 | struct net_device *dev; |
3dd20516 | 166 | struct ei_device *ei_local; |
1da177e4 LT |
167 | |
168 | DEBUG(0, "axnet_attach()\n"); | |
169 | ||
3dd20516 | 170 | dev = alloc_etherdev(sizeof(struct ei_device) + sizeof(axnet_dev_t)); |
1da177e4 | 171 | if (!dev) |
f8cfa618 | 172 | return -ENOMEM; |
1da177e4 | 173 | |
3dd20516 SH |
174 | ei_local = netdev_priv(dev); |
175 | spin_lock_init(&ei_local->page_lock); | |
176 | ||
1da177e4 | 177 | info = PRIV(dev); |
fba395ee | 178 | info->p_dev = link; |
1da177e4 | 179 | link->priv = dev; |
5e7bf8cc | 180 | link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; |
1da177e4 LT |
181 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; |
182 | link->conf.Attributes = CONF_ENABLE_IRQ; | |
183 | link->conf.IntType = INT_MEMORY_AND_IO; | |
184 | ||
3dd20516 SH |
185 | dev->netdev_ops = &axnet_netdev_ops; |
186 | ||
1da177e4 | 187 | SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); |
3dd20516 | 188 | dev->watchdog_timeo = TX_TIMEOUT; |
1da177e4 | 189 | |
15b99ac1 | 190 | return axnet_config(link); |
1da177e4 LT |
191 | } /* axnet_attach */ |
192 | ||
193 | /*====================================================================== | |
194 | ||
195 | This deletes a driver "instance". The device is de-registered | |
196 | with Card Services. If it has been released, all local data | |
197 | structures are freed. Otherwise, the structures will be freed | |
198 | when the device is released. | |
199 | ||
200 | ======================================================================*/ | |
201 | ||
fba395ee | 202 | static void axnet_detach(struct pcmcia_device *link) |
1da177e4 LT |
203 | { |
204 | struct net_device *dev = link->priv; | |
1da177e4 LT |
205 | |
206 | DEBUG(0, "axnet_detach(0x%p)\n", link); | |
207 | ||
fd238232 | 208 | if (link->dev_node) |
1da177e4 LT |
209 | unregister_netdev(dev); |
210 | ||
e2d40963 | 211 | axnet_release(link); |
1da177e4 | 212 | |
1da177e4 LT |
213 | free_netdev(dev); |
214 | } /* axnet_detach */ | |
215 | ||
216 | /*====================================================================== | |
217 | ||
218 | This probes for a card's hardware address by reading the PROM. | |
219 | ||
220 | ======================================================================*/ | |
221 | ||
fba395ee | 222 | static int get_prom(struct pcmcia_device *link) |
1da177e4 LT |
223 | { |
224 | struct net_device *dev = link->priv; | |
906da809 | 225 | unsigned int ioaddr = dev->base_addr; |
1da177e4 LT |
226 | int i, j; |
227 | ||
228 | /* This is based on drivers/net/ne.c */ | |
229 | struct { | |
230 | u_char value, offset; | |
231 | } program_seq[] = { | |
232 | {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/ | |
233 | {0x01, EN0_DCFG}, /* Set word-wide access. */ | |
234 | {0x00, EN0_RCNTLO}, /* Clear the count regs. */ | |
235 | {0x00, EN0_RCNTHI}, | |
236 | {0x00, EN0_IMR}, /* Mask completion irq. */ | |
237 | {0xFF, EN0_ISR}, | |
238 | {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */ | |
239 | {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ | |
240 | {0x10, EN0_RCNTLO}, | |
241 | {0x00, EN0_RCNTHI}, | |
242 | {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */ | |
243 | {0x04, EN0_RSARHI}, | |
244 | {E8390_RREAD+E8390_START, E8390_CMD}, | |
245 | }; | |
246 | ||
247 | /* Not much of a test, but the alternatives are messy */ | |
248 | if (link->conf.ConfigBase != 0x03c0) | |
249 | return 0; | |
250 | ||
251 | axnet_reset_8390(dev); | |
252 | mdelay(10); | |
253 | ||
ff8ac609 | 254 | for (i = 0; i < ARRAY_SIZE(program_seq); i++) |
1da177e4 LT |
255 | outb_p(program_seq[i].value, ioaddr + program_seq[i].offset); |
256 | ||
257 | for (i = 0; i < 6; i += 2) { | |
258 | j = inw(ioaddr + AXNET_DATAPORT); | |
259 | dev->dev_addr[i] = j & 0xff; | |
260 | dev->dev_addr[i+1] = j >> 8; | |
261 | } | |
262 | return 1; | |
263 | } /* get_prom */ | |
264 | ||
265 | /*====================================================================== | |
266 | ||
267 | axnet_config() is scheduled to run after a CARD_INSERTION event | |
268 | is received, to configure the PCMCIA socket, and to make the | |
269 | ethernet device available to the system. | |
270 | ||
271 | ======================================================================*/ | |
272 | ||
273 | #define CS_CHECK(fn, ret) \ | |
274 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) | |
275 | ||
fba395ee | 276 | static int try_io_port(struct pcmcia_device *link) |
1da177e4 LT |
277 | { |
278 | int j, ret; | |
279 | if (link->io.NumPorts1 == 32) { | |
280 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; | |
281 | if (link->io.NumPorts2 > 0) { | |
282 | /* for master/slave multifunction cards */ | |
283 | link->io.Attributes2 = IO_DATA_PATH_WIDTH_8; | |
4c89e88b | 284 | link->irq.Attributes = |
1da177e4 LT |
285 | IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED; |
286 | } | |
287 | } else { | |
288 | /* This should be two 16-port windows */ | |
289 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
290 | link->io.Attributes2 = IO_DATA_PATH_WIDTH_16; | |
291 | } | |
292 | if (link->io.BasePort1 == 0) { | |
293 | link->io.IOAddrLines = 16; | |
294 | for (j = 0; j < 0x400; j += 0x20) { | |
295 | link->io.BasePort1 = j ^ 0x300; | |
296 | link->io.BasePort2 = (j ^ 0x300) + 0x10; | |
fba395ee | 297 | ret = pcmcia_request_io(link, &link->io); |
4c89e88b DB |
298 | if (ret == 0) |
299 | return ret; | |
1da177e4 LT |
300 | } |
301 | return ret; | |
302 | } else { | |
fba395ee | 303 | return pcmcia_request_io(link, &link->io); |
1da177e4 LT |
304 | } |
305 | } | |
306 | ||
b54bf94b DB |
307 | static int axnet_configcheck(struct pcmcia_device *p_dev, |
308 | cistpl_cftable_entry_t *cfg, | |
8e2fc39d | 309 | cistpl_cftable_entry_t *dflt, |
ad913c11 | 310 | unsigned int vcc, |
b54bf94b DB |
311 | void *priv_data) |
312 | { | |
313 | int i; | |
314 | cistpl_io_t *io = &cfg->io; | |
315 | ||
316 | if (cfg->index == 0 || cfg->io.nwin == 0) | |
317 | return -ENODEV; | |
318 | ||
319 | p_dev->conf.ConfigIndex = 0x05; | |
320 | /* For multifunction cards, by convention, we configure the | |
321 | network function with window 0, and serial with window 1 */ | |
322 | if (io->nwin > 1) { | |
323 | i = (io->win[1].len > io->win[0].len); | |
324 | p_dev->io.BasePort2 = io->win[1-i].base; | |
325 | p_dev->io.NumPorts2 = io->win[1-i].len; | |
326 | } else { | |
327 | i = p_dev->io.NumPorts2 = 0; | |
328 | } | |
329 | p_dev->io.BasePort1 = io->win[i].base; | |
330 | p_dev->io.NumPorts1 = io->win[i].len; | |
331 | p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; | |
332 | if (p_dev->io.NumPorts1 + p_dev->io.NumPorts2 >= 32) | |
333 | return try_io_port(p_dev); | |
334 | ||
335 | return -ENODEV; | |
336 | } | |
337 | ||
15b99ac1 | 338 | static int axnet_config(struct pcmcia_device *link) |
1da177e4 | 339 | { |
1da177e4 LT |
340 | struct net_device *dev = link->priv; |
341 | axnet_dev_t *info = PRIV(dev); | |
ad3620a0 | 342 | int i, j, j2, last_ret, last_fn; |
1da177e4 LT |
343 | |
344 | DEBUG(0, "axnet_config(0x%p)\n", link); | |
345 | ||
1da177e4 LT |
346 | /* don't trust the CIS on this; Linksys got it wrong */ |
347 | link->conf.Present = 0x63; | |
b54bf94b | 348 | last_ret = pcmcia_loop_config(link, axnet_configcheck, NULL); |
4c89e88b | 349 | if (last_ret != 0) { |
fba395ee | 350 | cs_error(link, RequestIO, last_ret); |
1da177e4 LT |
351 | goto failed; |
352 | } | |
353 | ||
fba395ee | 354 | CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq)); |
1da177e4 LT |
355 | |
356 | if (link->io.NumPorts2 == 8) { | |
357 | link->conf.Attributes |= CONF_ENABLE_SPKR; | |
358 | link->conf.Status = CCSR_AUDIO_ENA; | |
359 | } | |
360 | ||
fba395ee | 361 | CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf)); |
1da177e4 LT |
362 | dev->irq = link->irq.AssignedIRQ; |
363 | dev->base_addr = link->io.BasePort1; | |
364 | ||
365 | if (!get_prom(link)) { | |
366 | printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n"); | |
367 | printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n"); | |
368 | goto failed; | |
369 | } | |
370 | ||
371 | ei_status.name = "AX88190"; | |
372 | ei_status.word16 = 1; | |
373 | ei_status.tx_start_page = AXNET_START_PG; | |
374 | ei_status.rx_start_page = AXNET_START_PG + TX_PAGES; | |
375 | ei_status.stop_page = AXNET_STOP_PG; | |
376 | ei_status.reset_8390 = &axnet_reset_8390; | |
377 | ei_status.get_8390_hdr = &get_8390_hdr; | |
378 | ei_status.block_input = &block_input; | |
379 | ei_status.block_output = &block_output; | |
380 | ||
381 | if (inb(dev->base_addr + AXNET_TEST) != 0) | |
382 | info->flags |= IS_AX88790; | |
383 | else | |
384 | info->flags |= IS_AX88190; | |
385 | ||
386 | if (info->flags & IS_AX88790) | |
387 | outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */ | |
388 | ||
389 | for (i = 0; i < 32; i++) { | |
390 | j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1); | |
ad3620a0 KK |
391 | j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2); |
392 | if (j == j2) continue; | |
1da177e4 LT |
393 | if ((j != 0) && (j != 0xffff)) break; |
394 | } | |
395 | ||
396 | /* Maybe PHY is in power down mode. (PPD_SET = 1) | |
397 | Bit 2 of CCSR is active low. */ | |
398 | if (i == 32) { | |
399 | conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 }; | |
fba395ee | 400 | pcmcia_access_configuration_register(link, ®); |
1da177e4 LT |
401 | for (i = 0; i < 32; i++) { |
402 | j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1); | |
ad3620a0 KK |
403 | j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2); |
404 | if (j == j2) continue; | |
1da177e4 LT |
405 | if ((j != 0) && (j != 0xffff)) break; |
406 | } | |
407 | } | |
408 | ||
409 | info->phy_id = (i < 32) ? i : -1; | |
fd238232 | 410 | link->dev_node = &info->node; |
fba395ee | 411 | SET_NETDEV_DEV(dev, &handle_to_dev(link)); |
1da177e4 LT |
412 | |
413 | if (register_netdev(dev) != 0) { | |
414 | printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n"); | |
fd238232 | 415 | link->dev_node = NULL; |
1da177e4 LT |
416 | goto failed; |
417 | } | |
418 | ||
419 | strcpy(info->node.dev_name, dev->name); | |
420 | ||
0795af57 | 421 | printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, " |
e174961c | 422 | "hw_addr %pM\n", |
1da177e4 | 423 | dev->name, ((info->flags & IS_AX88790) ? 7 : 1), |
0795af57 | 424 | dev->base_addr, dev->irq, |
e174961c | 425 | dev->dev_addr); |
1da177e4 LT |
426 | if (info->phy_id != -1) { |
427 | DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j); | |
428 | } else { | |
429 | printk(KERN_NOTICE " No MII transceivers found!\n"); | |
430 | } | |
15b99ac1 | 431 | return 0; |
1da177e4 LT |
432 | |
433 | cs_failed: | |
fba395ee | 434 | cs_error(link, last_fn, last_ret); |
1da177e4 LT |
435 | failed: |
436 | axnet_release(link); | |
15b99ac1 | 437 | return -ENODEV; |
1da177e4 LT |
438 | } /* axnet_config */ |
439 | ||
440 | /*====================================================================== | |
441 | ||
442 | After a card is removed, axnet_release() will unregister the net | |
443 | device, and release the PCMCIA configuration. If the device is | |
444 | still open, this will be postponed until it is closed. | |
445 | ||
446 | ======================================================================*/ | |
447 | ||
fba395ee | 448 | static void axnet_release(struct pcmcia_device *link) |
1da177e4 | 449 | { |
fba395ee | 450 | pcmcia_disable_device(link); |
1da177e4 LT |
451 | } |
452 | ||
fba395ee | 453 | static int axnet_suspend(struct pcmcia_device *link) |
98e4c28b | 454 | { |
98e4c28b DB |
455 | struct net_device *dev = link->priv; |
456 | ||
e2d40963 DB |
457 | if (link->open) |
458 | netif_device_detach(dev); | |
98e4c28b DB |
459 | |
460 | return 0; | |
461 | } | |
462 | ||
fba395ee | 463 | static int axnet_resume(struct pcmcia_device *link) |
98e4c28b | 464 | { |
98e4c28b DB |
465 | struct net_device *dev = link->priv; |
466 | ||
e2d40963 | 467 | if (link->open) { |
8661bb5b DB |
468 | axnet_reset_8390(dev); |
469 | AX88190_init(dev, 1); | |
470 | netif_device_attach(dev); | |
98e4c28b DB |
471 | } |
472 | ||
473 | return 0; | |
474 | } | |
475 | ||
476 | ||
1da177e4 LT |
477 | /*====================================================================== |
478 | ||
479 | MII interface support | |
480 | ||
481 | ======================================================================*/ | |
482 | ||
483 | #define MDIO_SHIFT_CLK 0x01 | |
484 | #define MDIO_DATA_WRITE0 0x00 | |
485 | #define MDIO_DATA_WRITE1 0x08 | |
486 | #define MDIO_DATA_READ 0x04 | |
487 | #define MDIO_MASK 0x0f | |
488 | #define MDIO_ENB_IN 0x02 | |
489 | ||
906da809 | 490 | static void mdio_sync(unsigned int addr) |
1da177e4 LT |
491 | { |
492 | int bits; | |
493 | for (bits = 0; bits < 32; bits++) { | |
494 | outb_p(MDIO_DATA_WRITE1, addr); | |
495 | outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr); | |
496 | } | |
497 | } | |
498 | ||
906da809 | 499 | static int mdio_read(unsigned int addr, int phy_id, int loc) |
1da177e4 LT |
500 | { |
501 | u_int cmd = (0xf6<<10)|(phy_id<<5)|loc; | |
502 | int i, retval = 0; | |
503 | ||
504 | mdio_sync(addr); | |
505 | for (i = 14; i >= 0; i--) { | |
506 | int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; | |
507 | outb_p(dat, addr); | |
508 | outb_p(dat | MDIO_SHIFT_CLK, addr); | |
509 | } | |
510 | for (i = 19; i > 0; i--) { | |
511 | outb_p(MDIO_ENB_IN, addr); | |
512 | retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0); | |
513 | outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr); | |
514 | } | |
515 | return (retval>>1) & 0xffff; | |
516 | } | |
517 | ||
906da809 | 518 | static void mdio_write(unsigned int addr, int phy_id, int loc, int value) |
1da177e4 LT |
519 | { |
520 | u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value; | |
521 | int i; | |
522 | ||
523 | mdio_sync(addr); | |
524 | for (i = 31; i >= 0; i--) { | |
525 | int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; | |
526 | outb_p(dat, addr); | |
527 | outb_p(dat | MDIO_SHIFT_CLK, addr); | |
528 | } | |
529 | for (i = 1; i >= 0; i--) { | |
530 | outb_p(MDIO_ENB_IN, addr); | |
531 | outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr); | |
532 | } | |
533 | } | |
534 | ||
535 | /*====================================================================*/ | |
536 | ||
537 | static int axnet_open(struct net_device *dev) | |
538 | { | |
59b34c12 | 539 | int ret; |
1da177e4 | 540 | axnet_dev_t *info = PRIV(dev); |
fba395ee | 541 | struct pcmcia_device *link = info->p_dev; |
54299ef7 | 542 | unsigned int nic_base = dev->base_addr; |
1da177e4 LT |
543 | |
544 | DEBUG(2, "axnet_open('%s')\n", dev->name); | |
545 | ||
9940ec36 | 546 | if (!pcmcia_dev_present(link)) |
1da177e4 LT |
547 | return -ENODEV; |
548 | ||
54299ef7 | 549 | outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */ |
59b34c12 YY |
550 | ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev); |
551 | if (ret) | |
552 | return ret; | |
1da177e4 | 553 | |
59b34c12 | 554 | link->open++; |
1da177e4 LT |
555 | |
556 | info->link_status = 0x00; | |
557 | init_timer(&info->watchdog); | |
558 | info->watchdog.function = &ei_watchdog; | |
559 | info->watchdog.data = (u_long)dev; | |
560 | info->watchdog.expires = jiffies + HZ; | |
561 | add_timer(&info->watchdog); | |
562 | ||
563 | return ax_open(dev); | |
564 | } /* axnet_open */ | |
565 | ||
566 | /*====================================================================*/ | |
567 | ||
568 | static int axnet_close(struct net_device *dev) | |
569 | { | |
570 | axnet_dev_t *info = PRIV(dev); | |
fba395ee | 571 | struct pcmcia_device *link = info->p_dev; |
1da177e4 LT |
572 | |
573 | DEBUG(2, "axnet_close('%s')\n", dev->name); | |
574 | ||
575 | ax_close(dev); | |
576 | free_irq(dev->irq, dev); | |
577 | ||
578 | link->open--; | |
579 | netif_stop_queue(dev); | |
580 | del_timer_sync(&info->watchdog); | |
581 | ||
582 | return 0; | |
583 | } /* axnet_close */ | |
584 | ||
585 | /*====================================================================== | |
586 | ||
587 | Hard reset the card. This used to pause for the same period that | |
588 | a 8390 reset command required, but that shouldn't be necessary. | |
589 | ||
590 | ======================================================================*/ | |
591 | ||
592 | static void axnet_reset_8390(struct net_device *dev) | |
593 | { | |
906da809 | 594 | unsigned int nic_base = dev->base_addr; |
1da177e4 LT |
595 | int i; |
596 | ||
597 | ei_status.txing = ei_status.dmaing = 0; | |
598 | ||
599 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD); | |
600 | ||
601 | outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET); | |
602 | ||
603 | for (i = 0; i < 100; i++) { | |
604 | if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0) | |
605 | break; | |
606 | udelay(100); | |
607 | } | |
608 | outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */ | |
609 | ||
610 | if (i == 100) | |
611 | printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n", | |
612 | dev->name); | |
613 | ||
614 | } /* axnet_reset_8390 */ | |
615 | ||
616 | /*====================================================================*/ | |
617 | ||
7d12e780 | 618 | static irqreturn_t ei_irq_wrapper(int irq, void *dev_id) |
1da177e4 LT |
619 | { |
620 | struct net_device *dev = dev_id; | |
621 | PRIV(dev)->stale = 0; | |
7d12e780 | 622 | return ax_interrupt(irq, dev_id); |
1da177e4 LT |
623 | } |
624 | ||
625 | static void ei_watchdog(u_long arg) | |
626 | { | |
627 | struct net_device *dev = (struct net_device *)(arg); | |
628 | axnet_dev_t *info = PRIV(dev); | |
906da809 OJ |
629 | unsigned int nic_base = dev->base_addr; |
630 | unsigned int mii_addr = nic_base + AXNET_MII_EEP; | |
1da177e4 LT |
631 | u_short link; |
632 | ||
633 | if (!netif_device_present(dev)) goto reschedule; | |
634 | ||
635 | /* Check for pending interrupt with expired latency timer: with | |
636 | this, we can limp along even if the interrupt is blocked */ | |
637 | if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) { | |
638 | if (!info->fast_poll) | |
639 | printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name); | |
7d12e780 | 640 | ei_irq_wrapper(dev->irq, dev); |
1da177e4 LT |
641 | info->fast_poll = HZ; |
642 | } | |
643 | if (info->fast_poll) { | |
644 | info->fast_poll--; | |
645 | info->watchdog.expires = jiffies + 1; | |
646 | add_timer(&info->watchdog); | |
647 | return; | |
648 | } | |
649 | ||
650 | if (info->phy_id < 0) | |
651 | goto reschedule; | |
652 | link = mdio_read(mii_addr, info->phy_id, 1); | |
653 | if (!link || (link == 0xffff)) { | |
654 | printk(KERN_INFO "%s: MII is missing!\n", dev->name); | |
655 | info->phy_id = -1; | |
656 | goto reschedule; | |
657 | } | |
658 | ||
659 | link &= 0x0004; | |
660 | if (link != info->link_status) { | |
661 | u_short p = mdio_read(mii_addr, info->phy_id, 5); | |
662 | printk(KERN_INFO "%s: %s link beat\n", dev->name, | |
663 | (link) ? "found" : "lost"); | |
664 | if (link) { | |
665 | info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00; | |
666 | if (p) | |
667 | printk(KERN_INFO "%s: autonegotiation complete: " | |
668 | "%sbaseT-%cD selected\n", dev->name, | |
669 | ((p & 0x0180) ? "100" : "10"), | |
670 | ((p & 0x0140) ? 'F' : 'H')); | |
671 | else | |
672 | printk(KERN_INFO "%s: link partner did not autonegotiate\n", | |
673 | dev->name); | |
674 | AX88190_init(dev, 1); | |
675 | } | |
676 | info->link_status = link; | |
677 | } | |
678 | ||
679 | reschedule: | |
680 | info->watchdog.expires = jiffies + HZ; | |
681 | add_timer(&info->watchdog); | |
682 | } | |
683 | ||
684 | static void netdev_get_drvinfo(struct net_device *dev, | |
685 | struct ethtool_drvinfo *info) | |
686 | { | |
687 | strcpy(info->driver, "axnet_cs"); | |
688 | } | |
689 | ||
7282d491 | 690 | static const struct ethtool_ops netdev_ethtool_ops = { |
1da177e4 LT |
691 | .get_drvinfo = netdev_get_drvinfo, |
692 | }; | |
693 | ||
694 | /*====================================================================*/ | |
695 | ||
696 | static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
697 | { | |
698 | axnet_dev_t *info = PRIV(dev); | |
699 | u16 *data = (u16 *)&rq->ifr_ifru; | |
906da809 | 700 | unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP; |
1da177e4 LT |
701 | switch (cmd) { |
702 | case SIOCGMIIPHY: | |
703 | data[0] = info->phy_id; | |
704 | case SIOCGMIIREG: /* Read MII PHY register. */ | |
705 | data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f); | |
706 | return 0; | |
707 | case SIOCSMIIREG: /* Write MII PHY register. */ | |
708 | if (!capable(CAP_NET_ADMIN)) | |
709 | return -EPERM; | |
710 | mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]); | |
711 | return 0; | |
712 | } | |
713 | return -EOPNOTSUPP; | |
714 | } | |
715 | ||
716 | /*====================================================================*/ | |
717 | ||
718 | static void get_8390_hdr(struct net_device *dev, | |
719 | struct e8390_pkt_hdr *hdr, | |
720 | int ring_page) | |
721 | { | |
906da809 | 722 | unsigned int nic_base = dev->base_addr; |
1da177e4 LT |
723 | |
724 | outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */ | |
725 | outb_p(ring_page, nic_base + EN0_RSARHI); | |
726 | outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD); | |
727 | ||
728 | insw(nic_base + AXNET_DATAPORT, hdr, | |
729 | sizeof(struct e8390_pkt_hdr)>>1); | |
730 | /* Fix for big endian systems */ | |
731 | hdr->count = le16_to_cpu(hdr->count); | |
732 | ||
733 | } | |
734 | ||
735 | /*====================================================================*/ | |
736 | ||
737 | static void block_input(struct net_device *dev, int count, | |
738 | struct sk_buff *skb, int ring_offset) | |
739 | { | |
906da809 | 740 | unsigned int nic_base = dev->base_addr; |
1da177e4 LT |
741 | int xfer_count = count; |
742 | char *buf = skb->data; | |
743 | ||
744 | #ifdef PCMCIA_DEBUG | |
745 | if ((ei_debug > 4) && (count != 4)) | |
746 | printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4); | |
747 | #endif | |
748 | outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO); | |
749 | outb_p(ring_offset >> 8, nic_base + EN0_RSARHI); | |
750 | outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD); | |
751 | ||
752 | insw(nic_base + AXNET_DATAPORT,buf,count>>1); | |
753 | if (count & 0x01) | |
754 | buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++; | |
755 | ||
756 | } | |
757 | ||
758 | /*====================================================================*/ | |
759 | ||
760 | static void block_output(struct net_device *dev, int count, | |
761 | const u_char *buf, const int start_page) | |
762 | { | |
906da809 | 763 | unsigned int nic_base = dev->base_addr; |
1da177e4 LT |
764 | |
765 | #ifdef PCMCIA_DEBUG | |
766 | if (ei_debug > 4) | |
767 | printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count); | |
768 | #endif | |
769 | ||
770 | /* Round the count up for word writes. Do we need to do this? | |
771 | What effect will an odd byte count have on the 8390? | |
772 | I should check someday. */ | |
773 | if (count & 0x01) | |
774 | count++; | |
775 | ||
776 | outb_p(0x00, nic_base + EN0_RSARLO); | |
777 | outb_p(start_page, nic_base + EN0_RSARHI); | |
778 | outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD); | |
779 | outsw(nic_base + AXNET_DATAPORT, buf, count>>1); | |
780 | } | |
781 | ||
c414f755 DB |
782 | static struct pcmcia_device_id axnet_ids[] = { |
783 | PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081), | |
784 | PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301), | |
785 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301), | |
786 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303), | |
787 | PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309), | |
788 | PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106), | |
789 | PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab), | |
c67eebd6 | 790 | PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202), |
dad8c737 | 791 | PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090), |
2fe22a8b | 792 | PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc), |
c414f755 DB |
793 | PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef), |
794 | PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef), | |
795 | PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1), | |
796 | PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc), | |
797 | PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b), | |
798 | PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5), | |
799 | PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e), | |
800 | PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90), | |
2dcc9ff7 | 801 | PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2), |
c414f755 DB |
802 | PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8), |
803 | PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609), | |
208fbec5 | 804 | PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875), |
c414f755 DB |
805 | PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04), |
806 | PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116), | |
807 | PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058), | |
808 | PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef), | |
c414f755 DB |
809 | PCMCIA_DEVICE_NULL, |
810 | }; | |
811 | MODULE_DEVICE_TABLE(pcmcia, axnet_ids); | |
812 | ||
1da177e4 LT |
813 | static struct pcmcia_driver axnet_cs_driver = { |
814 | .owner = THIS_MODULE, | |
815 | .drv = { | |
816 | .name = "axnet_cs", | |
817 | }, | |
15b99ac1 | 818 | .probe = axnet_probe, |
cc3b4866 | 819 | .remove = axnet_detach, |
c414f755 | 820 | .id_table = axnet_ids, |
98e4c28b DB |
821 | .suspend = axnet_suspend, |
822 | .resume = axnet_resume, | |
1da177e4 LT |
823 | }; |
824 | ||
825 | static int __init init_axnet_cs(void) | |
826 | { | |
827 | return pcmcia_register_driver(&axnet_cs_driver); | |
828 | } | |
829 | ||
830 | static void __exit exit_axnet_cs(void) | |
831 | { | |
832 | pcmcia_unregister_driver(&axnet_cs_driver); | |
1da177e4 LT |
833 | } |
834 | ||
835 | module_init(init_axnet_cs); | |
836 | module_exit(exit_axnet_cs); | |
837 | ||
838 | /*====================================================================*/ | |
839 | ||
840 | /* 8390.c: A general NS8390 ethernet driver core for linux. */ | |
841 | /* | |
842 | Written 1992-94 by Donald Becker. | |
843 | ||
844 | Copyright 1993 United States Government as represented by the | |
845 | Director, National Security Agency. | |
846 | ||
847 | This software may be used and distributed according to the terms | |
848 | of the GNU General Public License, incorporated herein by reference. | |
849 | ||
850 | The author may be reached as becker@scyld.com, or C/O | |
851 | Scyld Computing Corporation | |
852 | 410 Severn Ave., Suite 210 | |
853 | Annapolis MD 21403 | |
854 | ||
855 | This is the chip-specific code for many 8390-based ethernet adaptors. | |
856 | This is not a complete driver, it must be combined with board-specific | |
857 | code such as ne.c, wd.c, 3c503.c, etc. | |
858 | ||
859 | Seeing how at least eight drivers use this code, (not counting the | |
860 | PCMCIA ones either) it is easy to break some card by what seems like | |
861 | a simple innocent change. Please contact me or Donald if you think | |
862 | you have found something that needs changing. -- PG | |
863 | ||
864 | Changelog: | |
865 | ||
866 | Paul Gortmaker : remove set_bit lock, other cleanups. | |
867 | Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to | |
868 | ei_block_input() for eth_io_copy_and_sum(). | |
869 | Paul Gortmaker : exchange static int ei_pingpong for a #define, | |
870 | also add better Tx error handling. | |
871 | Paul Gortmaker : rewrite Rx overrun handling as per NS specs. | |
872 | Alexey Kuznetsov : use the 8390's six bit hash multicast filter. | |
873 | Paul Gortmaker : tweak ANK's above multicast changes a bit. | |
874 | Paul Gortmaker : update packet statistics for v2.1.x | |
875 | Alan Cox : support arbitary stupid port mappings on the | |
876 | 68K Macintosh. Support >16bit I/O spaces | |
877 | Paul Gortmaker : add kmod support for auto-loading of the 8390 | |
878 | module by all drivers that require it. | |
879 | Alan Cox : Spinlocking work, added 'BUG_83C690' | |
880 | Paul Gortmaker : Separate out Tx timeout code from Tx path. | |
881 | ||
882 | Sources: | |
883 | The National Semiconductor LAN Databook, and the 3Com 3c503 databook. | |
884 | ||
885 | */ | |
886 | ||
6ae03851 | 887 | static const char version_8390[] = KERN_INFO \ |
1da177e4 LT |
888 | "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n"; |
889 | ||
890 | #include <linux/bitops.h> | |
891 | #include <asm/irq.h> | |
892 | #include <linux/fcntl.h> | |
893 | #include <linux/in.h> | |
894 | #include <linux/interrupt.h> | |
895 | ||
1da177e4 LT |
896 | #define BUG_83C690 |
897 | ||
898 | /* These are the operational function interfaces to board-specific | |
899 | routines. | |
900 | void reset_8390(struct net_device *dev) | |
901 | Resets the board associated with DEV, including a hardware reset of | |
902 | the 8390. This is only called when there is a transmit timeout, and | |
903 | it is always followed by 8390_init(). | |
904 | void block_output(struct net_device *dev, int count, const unsigned char *buf, | |
905 | int start_page) | |
906 | Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The | |
907 | "page" value uses the 8390's 256-byte pages. | |
908 | void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page) | |
909 | Read the 4 byte, page aligned 8390 header. *If* there is a | |
910 | subsequent read, it will be of the rest of the packet. | |
911 | void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) | |
912 | Read COUNT bytes from the packet buffer into the skb data area. Start | |
913 | reading from RING_OFFSET, the address as the 8390 sees it. This will always | |
914 | follow the read of the 8390 header. | |
915 | */ | |
916 | #define ei_reset_8390 (ei_local->reset_8390) | |
917 | #define ei_block_output (ei_local->block_output) | |
918 | #define ei_block_input (ei_local->block_input) | |
919 | #define ei_get_8390_hdr (ei_local->get_8390_hdr) | |
920 | ||
921 | /* use 0 for production, 1 for verification, >2 for debug */ | |
922 | #ifndef ei_debug | |
923 | int ei_debug = 1; | |
924 | #endif | |
925 | ||
926 | /* Index to functions. */ | |
927 | static void ei_tx_intr(struct net_device *dev); | |
928 | static void ei_tx_err(struct net_device *dev); | |
1da177e4 LT |
929 | static void ei_receive(struct net_device *dev); |
930 | static void ei_rx_overrun(struct net_device *dev); | |
931 | ||
932 | /* Routines generic to NS8390-based boards. */ | |
933 | static void NS8390_trigger_send(struct net_device *dev, unsigned int length, | |
934 | int start_page); | |
1da177e4 LT |
935 | static void do_set_multicast_list(struct net_device *dev); |
936 | ||
937 | /* | |
938 | * SMP and the 8390 setup. | |
939 | * | |
940 | * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is | |
941 | * a page register that controls bank and packet buffer access. We guard | |
942 | * this with ei_local->page_lock. Nobody should assume or set the page other | |
943 | * than zero when the lock is not held. Lock holders must restore page 0 | |
944 | * before unlocking. Even pure readers must take the lock to protect in | |
945 | * page 0. | |
946 | * | |
947 | * To make life difficult the chip can also be very slow. We therefore can't | |
948 | * just use spinlocks. For the longer lockups we disable the irq the device | |
949 | * sits on and hold the lock. We must hold the lock because there is a dual | |
950 | * processor case other than interrupts (get stats/set multicast list in | |
951 | * parallel with each other and transmit). | |
952 | * | |
953 | * Note: in theory we can just disable the irq on the card _but_ there is | |
954 | * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs" | |
955 | * enter lock, take the queued irq. So we waddle instead of flying. | |
956 | * | |
957 | * Finally by special arrangement for the purpose of being generally | |
958 | * annoying the transmit function is called bh atomic. That places | |
959 | * restrictions on the user context callers as disable_irq won't save | |
960 | * them. | |
961 | */ | |
962 | ||
963 | /** | |
964 | * ax_open - Open/initialize the board. | |
965 | * @dev: network device to initialize | |
966 | * | |
967 | * This routine goes all-out, setting everything | |
968 | * up anew at each open, even though many of these registers should only | |
969 | * need to be set once at boot. | |
970 | */ | |
971 | static int ax_open(struct net_device *dev) | |
972 | { | |
973 | unsigned long flags; | |
974 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); | |
975 | ||
1da177e4 LT |
976 | /* |
977 | * Grab the page lock so we own the register set, then call | |
978 | * the init function. | |
979 | */ | |
980 | ||
981 | spin_lock_irqsave(&ei_local->page_lock, flags); | |
982 | AX88190_init(dev, 1); | |
983 | /* Set the flag before we drop the lock, That way the IRQ arrives | |
984 | after its set and we get no silly warnings */ | |
985 | netif_start_queue(dev); | |
986 | spin_unlock_irqrestore(&ei_local->page_lock, flags); | |
987 | ei_local->irqlock = 0; | |
988 | return 0; | |
989 | } | |
990 | ||
991 | #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock) | |
992 | ||
993 | /** | |
994 | * ax_close - shut down network device | |
995 | * @dev: network device to close | |
996 | * | |
997 | * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done. | |
998 | */ | |
6b2e4386 | 999 | static int ax_close(struct net_device *dev) |
1da177e4 LT |
1000 | { |
1001 | unsigned long flags; | |
1002 | ||
1003 | /* | |
1004 | * Hold the page lock during close | |
1005 | */ | |
1006 | ||
1007 | spin_lock_irqsave(&dev_lock(dev), flags); | |
1008 | AX88190_init(dev, 0); | |
1009 | spin_unlock_irqrestore(&dev_lock(dev), flags); | |
1010 | netif_stop_queue(dev); | |
1011 | return 0; | |
1012 | } | |
1013 | ||
1014 | /** | |
70eb1bfd | 1015 | * axnet_tx_timeout - handle transmit time out condition |
1da177e4 LT |
1016 | * @dev: network device which has apparently fallen asleep |
1017 | * | |
1018 | * Called by kernel when device never acknowledges a transmit has | |
1019 | * completed (or failed) - i.e. never posted a Tx related interrupt. | |
1020 | */ | |
1021 | ||
70eb1bfd | 1022 | static void axnet_tx_timeout(struct net_device *dev) |
1da177e4 LT |
1023 | { |
1024 | long e8390_base = dev->base_addr; | |
1025 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); | |
1026 | int txsr, isr, tickssofar = jiffies - dev->trans_start; | |
1027 | unsigned long flags; | |
1028 | ||
8e269165 | 1029 | dev->stats.tx_errors++; |
1da177e4 LT |
1030 | |
1031 | spin_lock_irqsave(&ei_local->page_lock, flags); | |
1032 | txsr = inb(e8390_base+EN0_TSR); | |
1033 | isr = inb(e8390_base+EN0_ISR); | |
1034 | spin_unlock_irqrestore(&ei_local->page_lock, flags); | |
1035 | ||
1036 | printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n", | |
1037 | dev->name, (txsr & ENTSR_ABT) ? "excess collisions." : | |
1038 | (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar); | |
1039 | ||
8e269165 | 1040 | if (!isr && !dev->stats.tx_packets) |
1da177e4 LT |
1041 | { |
1042 | /* The 8390 probably hasn't gotten on the cable yet. */ | |
1043 | ei_local->interface_num ^= 1; /* Try a different xcvr. */ | |
1044 | } | |
1045 | ||
1046 | /* Ugly but a reset can be slow, yet must be protected */ | |
1047 | ||
bd5a9346 | 1048 | spin_lock_irqsave(&ei_local->page_lock, flags); |
1da177e4 LT |
1049 | |
1050 | /* Try to restart the card. Perhaps the user has fixed something. */ | |
1051 | ei_reset_8390(dev); | |
1052 | AX88190_init(dev, 1); | |
1053 | ||
bd5a9346 | 1054 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
1da177e4 LT |
1055 | netif_wake_queue(dev); |
1056 | } | |
1057 | ||
1058 | /** | |
70eb1bfd | 1059 | * axnet_start_xmit - begin packet transmission |
1da177e4 LT |
1060 | * @skb: packet to be sent |
1061 | * @dev: network device to which packet is sent | |
1062 | * | |
1063 | * Sends a packet to an 8390 network device. | |
1064 | */ | |
1065 | ||
70eb1bfd | 1066 | static int axnet_start_xmit(struct sk_buff *skb, struct net_device *dev) |
1da177e4 LT |
1067 | { |
1068 | long e8390_base = dev->base_addr; | |
1069 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); | |
1070 | int length, send_length, output_page; | |
1071 | unsigned long flags; | |
1072 | u8 packet[ETH_ZLEN]; | |
1073 | ||
1074 | netif_stop_queue(dev); | |
1075 | ||
1076 | length = skb->len; | |
1077 | ||
1078 | /* Mask interrupts from the ethercard. | |
1079 | SMP: We have to grab the lock here otherwise the IRQ handler | |
1080 | on another CPU can flip window and race the IRQ mask set. We end | |
1081 | up trashing the mcast filter not disabling irqs if we don't lock */ | |
1082 | ||
1083 | spin_lock_irqsave(&ei_local->page_lock, flags); | |
1084 | outb_p(0x00, e8390_base + EN0_IMR); | |
1085 | spin_unlock_irqrestore(&ei_local->page_lock, flags); | |
1086 | ||
1087 | /* | |
1088 | * Slow phase with lock held. | |
1089 | */ | |
1090 | ||
bd5a9346 | 1091 | spin_lock_irqsave(&ei_local->page_lock, flags); |
1da177e4 LT |
1092 | |
1093 | ei_local->irqlock = 1; | |
1094 | ||
c61f26fa RK |
1095 | send_length = max(length, ETH_ZLEN); |
1096 | ||
1da177e4 LT |
1097 | /* |
1098 | * We have two Tx slots available for use. Find the first free | |
1099 | * slot, and then perform some sanity checks. With two Tx bufs, | |
1100 | * you get very close to transmitting back-to-back packets. With | |
1101 | * only one Tx buf, the transmitter sits idle while you reload the | |
1102 | * card, leaving a substantial gap between each transmitted packet. | |
1103 | */ | |
1104 | ||
1105 | if (ei_local->tx1 == 0) | |
1106 | { | |
1107 | output_page = ei_local->tx_start_page; | |
1108 | ei_local->tx1 = send_length; | |
1109 | if (ei_debug && ei_local->tx2 > 0) | |
1110 | printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n", | |
1111 | dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing); | |
1112 | } | |
1113 | else if (ei_local->tx2 == 0) | |
1114 | { | |
1115 | output_page = ei_local->tx_start_page + TX_PAGES/2; | |
1116 | ei_local->tx2 = send_length; | |
1117 | if (ei_debug && ei_local->tx1 > 0) | |
1118 | printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n", | |
1119 | dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing); | |
1120 | } | |
1121 | else | |
1122 | { /* We should never get here. */ | |
1123 | if (ei_debug) | |
1124 | printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n", | |
1125 | dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx); | |
1126 | ei_local->irqlock = 0; | |
1127 | netif_stop_queue(dev); | |
1128 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); | |
bd5a9346 | 1129 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
8e269165 | 1130 | dev->stats.tx_errors++; |
5b548140 | 1131 | return NETDEV_TX_BUSY; |
1da177e4 LT |
1132 | } |
1133 | ||
1134 | /* | |
1135 | * Okay, now upload the packet and trigger a send if the transmitter | |
1136 | * isn't already sending. If it is busy, the interrupt handler will | |
1137 | * trigger the send later, upon receiving a Tx done interrupt. | |
1138 | */ | |
1139 | ||
1140 | if (length == skb->len) | |
1141 | ei_block_output(dev, length, skb->data, output_page); | |
1142 | else { | |
1143 | memset(packet, 0, ETH_ZLEN); | |
d626f62b | 1144 | skb_copy_from_linear_data(skb, packet, skb->len); |
1da177e4 LT |
1145 | ei_block_output(dev, length, packet, output_page); |
1146 | } | |
1147 | ||
1148 | if (! ei_local->txing) | |
1149 | { | |
1150 | ei_local->txing = 1; | |
1151 | NS8390_trigger_send(dev, send_length, output_page); | |
1152 | dev->trans_start = jiffies; | |
1153 | if (output_page == ei_local->tx_start_page) | |
1154 | { | |
1155 | ei_local->tx1 = -1; | |
1156 | ei_local->lasttx = -1; | |
1157 | } | |
1158 | else | |
1159 | { | |
1160 | ei_local->tx2 = -1; | |
1161 | ei_local->lasttx = -2; | |
1162 | } | |
1163 | } | |
1164 | else ei_local->txqueue++; | |
1165 | ||
1166 | if (ei_local->tx1 && ei_local->tx2) | |
1167 | netif_stop_queue(dev); | |
1168 | else | |
1169 | netif_start_queue(dev); | |
1170 | ||
1171 | /* Turn 8390 interrupts back on. */ | |
1172 | ei_local->irqlock = 0; | |
1173 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); | |
1174 | ||
bd5a9346 | 1175 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
1da177e4 LT |
1176 | |
1177 | dev_kfree_skb (skb); | |
8e269165 | 1178 | dev->stats.tx_bytes += send_length; |
1da177e4 | 1179 | |
6ed10654 | 1180 | return NETDEV_TX_OK; |
1da177e4 LT |
1181 | } |
1182 | ||
1183 | /** | |
1184 | * ax_interrupt - handle the interrupts from an 8390 | |
1185 | * @irq: interrupt number | |
1186 | * @dev_id: a pointer to the net_device | |
1da177e4 LT |
1187 | * |
1188 | * Handle the ether interface interrupts. We pull packets from | |
1189 | * the 8390 via the card specific functions and fire them at the networking | |
1190 | * stack. We also handle transmit completions and wake the transmit path if | |
1191 | * necessary. We also update the counters and do other housekeeping as | |
1192 | * needed. | |
1193 | */ | |
1194 | ||
7d12e780 | 1195 | static irqreturn_t ax_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1196 | { |
1197 | struct net_device *dev = dev_id; | |
1198 | long e8390_base; | |
1199 | int interrupts, nr_serviced = 0, i; | |
1200 | struct ei_device *ei_local; | |
1201 | int handled = 0; | |
1202 | ||
1da177e4 | 1203 | e8390_base = dev->base_addr; |
c31f28e7 | 1204 | ei_local = netdev_priv(dev); |
1da177e4 LT |
1205 | |
1206 | /* | |
1207 | * Protect the irq test too. | |
1208 | */ | |
1209 | ||
1210 | spin_lock(&ei_local->page_lock); | |
1211 | ||
1212 | if (ei_local->irqlock) | |
1213 | { | |
1214 | #if 1 /* This might just be an interrupt for a PCI device sharing this line */ | |
1215 | /* The "irqlock" check is only for testing. */ | |
1216 | printk(ei_local->irqlock | |
1217 | ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n" | |
1218 | : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n", | |
1219 | dev->name, inb_p(e8390_base + EN0_ISR), | |
1220 | inb_p(e8390_base + EN0_IMR)); | |
1221 | #endif | |
1222 | spin_unlock(&ei_local->page_lock); | |
1223 | return IRQ_NONE; | |
1224 | } | |
1225 | ||
1226 | if (ei_debug > 3) | |
1227 | printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name, | |
1228 | inb_p(e8390_base + EN0_ISR)); | |
1229 | ||
1230 | outb_p(0x00, e8390_base + EN0_ISR); | |
1231 | ei_local->irqlock = 1; | |
1232 | ||
1233 | /* !!Assumption!! -- we stay in page 0. Don't break this. */ | |
1234 | while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0 | |
1235 | && ++nr_serviced < MAX_SERVICE) | |
1236 | { | |
1237 | if (!netif_running(dev) || (interrupts == 0xff)) { | |
1238 | if (ei_debug > 1) | |
1239 | printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name); | |
1240 | outb_p(interrupts, e8390_base + EN0_ISR); | |
1241 | interrupts = 0; | |
1242 | break; | |
1243 | } | |
1244 | handled = 1; | |
1245 | ||
1246 | /* AX88190 bug fix. */ | |
1247 | outb_p(interrupts, e8390_base + EN0_ISR); | |
1248 | for (i = 0; i < 10; i++) { | |
1249 | if (!(inb(e8390_base + EN0_ISR) & interrupts)) | |
1250 | break; | |
1251 | outb_p(0, e8390_base + EN0_ISR); | |
1252 | outb_p(interrupts, e8390_base + EN0_ISR); | |
1253 | } | |
1254 | if (interrupts & ENISR_OVER) | |
1255 | ei_rx_overrun(dev); | |
1256 | else if (interrupts & (ENISR_RX+ENISR_RX_ERR)) | |
1257 | { | |
1258 | /* Got a good (?) packet. */ | |
1259 | ei_receive(dev); | |
1260 | } | |
1261 | /* Push the next to-transmit packet through. */ | |
1262 | if (interrupts & ENISR_TX) | |
1263 | ei_tx_intr(dev); | |
1264 | else if (interrupts & ENISR_TX_ERR) | |
1265 | ei_tx_err(dev); | |
1266 | ||
1267 | if (interrupts & ENISR_COUNTERS) | |
1268 | { | |
8e269165 PZ |
1269 | dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0); |
1270 | dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1); | |
1271 | dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2); | |
1da177e4 LT |
1272 | } |
1273 | } | |
1274 | ||
36c86bd2 | 1275 | if (interrupts && ei_debug > 3) |
1da177e4 LT |
1276 | { |
1277 | handled = 1; | |
1278 | if (nr_serviced >= MAX_SERVICE) | |
1279 | { | |
1280 | /* 0xFF is valid for a card removal */ | |
1281 | if(interrupts!=0xFF) | |
1282 | printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n", | |
1283 | dev->name, interrupts); | |
1284 | outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */ | |
1285 | } else { | |
1286 | printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts); | |
1287 | outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */ | |
1288 | } | |
1289 | } | |
1290 | ||
1291 | /* Turn 8390 interrupts back on. */ | |
1292 | ei_local->irqlock = 0; | |
1293 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); | |
1294 | ||
1295 | spin_unlock(&ei_local->page_lock); | |
1296 | return IRQ_RETVAL(handled); | |
1297 | } | |
1298 | ||
1299 | /** | |
1300 | * ei_tx_err - handle transmitter error | |
1301 | * @dev: network device which threw the exception | |
1302 | * | |
1303 | * A transmitter error has happened. Most likely excess collisions (which | |
1304 | * is a fairly normal condition). If the error is one where the Tx will | |
1305 | * have been aborted, we try and send another one right away, instead of | |
1306 | * letting the failed packet sit and collect dust in the Tx buffer. This | |
1307 | * is a much better solution as it avoids kernel based Tx timeouts, and | |
1308 | * an unnecessary card reset. | |
1309 | * | |
1310 | * Called with lock held. | |
1311 | */ | |
1312 | ||
1313 | static void ei_tx_err(struct net_device *dev) | |
1314 | { | |
1315 | long e8390_base = dev->base_addr; | |
1da177e4 LT |
1316 | unsigned char txsr = inb_p(e8390_base+EN0_TSR); |
1317 | unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU); | |
1318 | ||
1319 | #ifdef VERBOSE_ERROR_DUMP | |
1320 | printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr); | |
1321 | if (txsr & ENTSR_ABT) | |
1322 | printk("excess-collisions "); | |
1323 | if (txsr & ENTSR_ND) | |
1324 | printk("non-deferral "); | |
1325 | if (txsr & ENTSR_CRS) | |
1326 | printk("lost-carrier "); | |
1327 | if (txsr & ENTSR_FU) | |
1328 | printk("FIFO-underrun "); | |
1329 | if (txsr & ENTSR_CDH) | |
1330 | printk("lost-heartbeat "); | |
1331 | printk("\n"); | |
1332 | #endif | |
1333 | ||
1334 | if (tx_was_aborted) | |
1335 | ei_tx_intr(dev); | |
1336 | else | |
1337 | { | |
8e269165 PZ |
1338 | dev->stats.tx_errors++; |
1339 | if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++; | |
1340 | if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++; | |
1341 | if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++; | |
1da177e4 LT |
1342 | } |
1343 | } | |
1344 | ||
1345 | /** | |
1346 | * ei_tx_intr - transmit interrupt handler | |
1347 | * @dev: network device for which tx intr is handled | |
1348 | * | |
1349 | * We have finished a transmit: check for errors and then trigger the next | |
1350 | * packet to be sent. Called with lock held. | |
1351 | */ | |
1352 | ||
1353 | static void ei_tx_intr(struct net_device *dev) | |
1354 | { | |
1355 | long e8390_base = dev->base_addr; | |
1356 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); | |
1357 | int status = inb(e8390_base + EN0_TSR); | |
1358 | ||
1359 | /* | |
1360 | * There are two Tx buffers, see which one finished, and trigger | |
1361 | * the send of another one if it exists. | |
1362 | */ | |
1363 | ei_local->txqueue--; | |
1364 | ||
1365 | if (ei_local->tx1 < 0) | |
1366 | { | |
1367 | if (ei_local->lasttx != 1 && ei_local->lasttx != -1) | |
1368 | printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n", | |
1369 | ei_local->name, ei_local->lasttx, ei_local->tx1); | |
1370 | ei_local->tx1 = 0; | |
1371 | if (ei_local->tx2 > 0) | |
1372 | { | |
1373 | ei_local->txing = 1; | |
1374 | NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6); | |
1375 | dev->trans_start = jiffies; | |
1376 | ei_local->tx2 = -1, | |
1377 | ei_local->lasttx = 2; | |
1378 | } | |
1379 | else ei_local->lasttx = 20, ei_local->txing = 0; | |
1380 | } | |
1381 | else if (ei_local->tx2 < 0) | |
1382 | { | |
1383 | if (ei_local->lasttx != 2 && ei_local->lasttx != -2) | |
1384 | printk("%s: bogus last_tx_buffer %d, tx2=%d.\n", | |
1385 | ei_local->name, ei_local->lasttx, ei_local->tx2); | |
1386 | ei_local->tx2 = 0; | |
1387 | if (ei_local->tx1 > 0) | |
1388 | { | |
1389 | ei_local->txing = 1; | |
1390 | NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page); | |
1391 | dev->trans_start = jiffies; | |
1392 | ei_local->tx1 = -1; | |
1393 | ei_local->lasttx = 1; | |
1394 | } | |
1395 | else | |
1396 | ei_local->lasttx = 10, ei_local->txing = 0; | |
1397 | } | |
1398 | // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n", | |
1399 | // dev->name, ei_local->lasttx); | |
1400 | ||
1401 | /* Minimize Tx latency: update the statistics after we restart TXing. */ | |
1402 | if (status & ENTSR_COL) | |
8e269165 | 1403 | dev->stats.collisions++; |
1da177e4 | 1404 | if (status & ENTSR_PTX) |
8e269165 | 1405 | dev->stats.tx_packets++; |
1da177e4 LT |
1406 | else |
1407 | { | |
8e269165 | 1408 | dev->stats.tx_errors++; |
1da177e4 LT |
1409 | if (status & ENTSR_ABT) |
1410 | { | |
8e269165 PZ |
1411 | dev->stats.tx_aborted_errors++; |
1412 | dev->stats.collisions += 16; | |
1da177e4 LT |
1413 | } |
1414 | if (status & ENTSR_CRS) | |
8e269165 | 1415 | dev->stats.tx_carrier_errors++; |
1da177e4 | 1416 | if (status & ENTSR_FU) |
8e269165 | 1417 | dev->stats.tx_fifo_errors++; |
1da177e4 | 1418 | if (status & ENTSR_CDH) |
8e269165 | 1419 | dev->stats.tx_heartbeat_errors++; |
1da177e4 | 1420 | if (status & ENTSR_OWC) |
8e269165 | 1421 | dev->stats.tx_window_errors++; |
1da177e4 LT |
1422 | } |
1423 | netif_wake_queue(dev); | |
1424 | } | |
1425 | ||
1426 | /** | |
1427 | * ei_receive - receive some packets | |
1428 | * @dev: network device with which receive will be run | |
1429 | * | |
1430 | * We have a good packet(s), get it/them out of the buffers. | |
1431 | * Called with lock held. | |
1432 | */ | |
1433 | ||
1434 | static void ei_receive(struct net_device *dev) | |
1435 | { | |
1436 | long e8390_base = dev->base_addr; | |
1437 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); | |
1438 | unsigned char rxing_page, this_frame, next_frame; | |
1439 | unsigned short current_offset; | |
1440 | int rx_pkt_count = 0; | |
1441 | struct e8390_pkt_hdr rx_frame; | |
1442 | ||
1443 | while (++rx_pkt_count < 10) | |
1444 | { | |
1445 | int pkt_len, pkt_stat; | |
1446 | ||
1447 | /* Get the rx page (incoming packet pointer). */ | |
1448 | rxing_page = inb_p(e8390_base + EN1_CURPAG -1); | |
1449 | ||
1450 | /* Remove one frame from the ring. Boundary is always a page behind. */ | |
1451 | this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1; | |
1452 | if (this_frame >= ei_local->stop_page) | |
1453 | this_frame = ei_local->rx_start_page; | |
1454 | ||
1455 | /* Someday we'll omit the previous, iff we never get this message. | |
1456 | (There is at least one clone claimed to have a problem.) | |
1457 | ||
1458 | Keep quiet if it looks like a card removal. One problem here | |
1459 | is that some clones crash in roughly the same way. | |
1460 | */ | |
1461 | if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF)) | |
1462 | printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n", | |
1463 | dev->name, this_frame, ei_local->current_page); | |
1464 | ||
1465 | if (this_frame == rxing_page) /* Read all the frames? */ | |
1466 | break; /* Done for now */ | |
1467 | ||
1468 | current_offset = this_frame << 8; | |
1469 | ei_get_8390_hdr(dev, &rx_frame, this_frame); | |
1470 | ||
1471 | pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr); | |
1472 | pkt_stat = rx_frame.status; | |
1473 | ||
1474 | next_frame = this_frame + 1 + ((pkt_len+4)>>8); | |
1475 | ||
1476 | if (pkt_len < 60 || pkt_len > 1518) | |
1477 | { | |
1478 | if (ei_debug) | |
1479 | printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n", | |
1480 | dev->name, rx_frame.count, rx_frame.status, | |
1481 | rx_frame.next); | |
8e269165 PZ |
1482 | dev->stats.rx_errors++; |
1483 | dev->stats.rx_length_errors++; | |
1da177e4 LT |
1484 | } |
1485 | else if ((pkt_stat & 0x0F) == ENRSR_RXOK) | |
1486 | { | |
1487 | struct sk_buff *skb; | |
1488 | ||
1489 | skb = dev_alloc_skb(pkt_len+2); | |
1490 | if (skb == NULL) | |
1491 | { | |
1492 | if (ei_debug > 1) | |
1493 | printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n", | |
1494 | dev->name, pkt_len); | |
8e269165 | 1495 | dev->stats.rx_dropped++; |
1da177e4 LT |
1496 | break; |
1497 | } | |
1498 | else | |
1499 | { | |
1500 | skb_reserve(skb,2); /* IP headers on 16 byte boundaries */ | |
1da177e4 LT |
1501 | skb_put(skb, pkt_len); /* Make room */ |
1502 | ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame)); | |
1503 | skb->protocol=eth_type_trans(skb,dev); | |
1504 | netif_rx(skb); | |
8e269165 PZ |
1505 | dev->stats.rx_packets++; |
1506 | dev->stats.rx_bytes += pkt_len; | |
1da177e4 | 1507 | if (pkt_stat & ENRSR_PHY) |
8e269165 | 1508 | dev->stats.multicast++; |
1da177e4 LT |
1509 | } |
1510 | } | |
1511 | else | |
1512 | { | |
1513 | if (ei_debug) | |
1514 | printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n", | |
1515 | dev->name, rx_frame.status, rx_frame.next, | |
1516 | rx_frame.count); | |
8e269165 | 1517 | dev->stats.rx_errors++; |
1da177e4 LT |
1518 | /* NB: The NIC counts CRC, frame and missed errors. */ |
1519 | if (pkt_stat & ENRSR_FO) | |
8e269165 | 1520 | dev->stats.rx_fifo_errors++; |
1da177e4 LT |
1521 | } |
1522 | next_frame = rx_frame.next; | |
1523 | ||
1524 | /* This _should_ never happen: it's here for avoiding bad clones. */ | |
1525 | if (next_frame >= ei_local->stop_page) { | |
1526 | printk("%s: next frame inconsistency, %#2x\n", dev->name, | |
1527 | next_frame); | |
1528 | next_frame = ei_local->rx_start_page; | |
1529 | } | |
1530 | ei_local->current_page = next_frame; | |
1531 | outb_p(next_frame-1, e8390_base+EN0_BOUNDARY); | |
1532 | } | |
1533 | ||
1534 | return; | |
1535 | } | |
1536 | ||
1537 | /** | |
1538 | * ei_rx_overrun - handle receiver overrun | |
1539 | * @dev: network device which threw exception | |
1540 | * | |
1541 | * We have a receiver overrun: we have to kick the 8390 to get it started | |
1542 | * again. Problem is that you have to kick it exactly as NS prescribes in | |
1543 | * the updated datasheets, or "the NIC may act in an unpredictable manner." | |
1544 | * This includes causing "the NIC to defer indefinitely when it is stopped | |
1545 | * on a busy network." Ugh. | |
1546 | * Called with lock held. Don't call this with the interrupts off or your | |
1547 | * computer will hate you - it takes 10ms or so. | |
1548 | */ | |
1549 | ||
1550 | static void ei_rx_overrun(struct net_device *dev) | |
1551 | { | |
ff768cd7 | 1552 | axnet_dev_t *info = PRIV(dev); |
1da177e4 LT |
1553 | long e8390_base = dev->base_addr; |
1554 | unsigned char was_txing, must_resend = 0; | |
1da177e4 LT |
1555 | |
1556 | /* | |
1557 | * Record whether a Tx was in progress and then issue the | |
1558 | * stop command. | |
1559 | */ | |
1560 | was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS; | |
1561 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); | |
1562 | ||
1563 | if (ei_debug > 1) | |
1564 | printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name); | |
8e269165 | 1565 | dev->stats.rx_over_errors++; |
1da177e4 LT |
1566 | |
1567 | /* | |
1568 | * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total. | |
1569 | * Early datasheets said to poll the reset bit, but now they say that | |
1570 | * it "is not a reliable indicator and subsequently should be ignored." | |
1571 | * We wait at least 10ms. | |
1572 | */ | |
1573 | ||
1574 | mdelay(10); | |
1575 | ||
1576 | /* | |
1577 | * Reset RBCR[01] back to zero as per magic incantation. | |
1578 | */ | |
1579 | outb_p(0x00, e8390_base+EN0_RCNTLO); | |
1580 | outb_p(0x00, e8390_base+EN0_RCNTHI); | |
1581 | ||
1582 | /* | |
1583 | * See if any Tx was interrupted or not. According to NS, this | |
1584 | * step is vital, and skipping it will cause no end of havoc. | |
1585 | */ | |
1586 | ||
1587 | if (was_txing) | |
1588 | { | |
1589 | unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR); | |
1590 | if (!tx_completed) | |
1591 | must_resend = 1; | |
1592 | } | |
1593 | ||
1594 | /* | |
1595 | * Have to enter loopback mode and then restart the NIC before | |
1596 | * you are allowed to slurp packets up off the ring. | |
1597 | */ | |
1598 | outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); | |
1599 | outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD); | |
1600 | ||
1601 | /* | |
1602 | * Clear the Rx ring of all the debris, and ack the interrupt. | |
1603 | */ | |
1604 | ei_receive(dev); | |
1605 | ||
1606 | /* | |
1607 | * Leave loopback mode, and resend any packet that got stopped. | |
1608 | */ | |
1609 | outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR); | |
1610 | if (must_resend) | |
1611 | outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD); | |
1612 | } | |
1613 | ||
1614 | /* | |
1615 | * Collect the stats. This is called unlocked and from several contexts. | |
1616 | */ | |
1617 | ||
1618 | static struct net_device_stats *get_stats(struct net_device *dev) | |
1619 | { | |
1620 | long ioaddr = dev->base_addr; | |
1621 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); | |
1622 | unsigned long flags; | |
1623 | ||
1624 | /* If the card is stopped, just return the present stats. */ | |
1625 | if (!netif_running(dev)) | |
8e269165 | 1626 | return &dev->stats; |
1da177e4 LT |
1627 | |
1628 | spin_lock_irqsave(&ei_local->page_lock,flags); | |
1629 | /* Read the counter registers, assuming we are in page 0. */ | |
8e269165 PZ |
1630 | dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0); |
1631 | dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1); | |
1632 | dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2); | |
1da177e4 LT |
1633 | spin_unlock_irqrestore(&ei_local->page_lock, flags); |
1634 | ||
8e269165 | 1635 | return &dev->stats; |
1da177e4 LT |
1636 | } |
1637 | ||
b8ab2dc3 K |
1638 | /* |
1639 | * Form the 64 bit 8390 multicast table from the linked list of addresses | |
1640 | * associated with this dev structure. | |
1641 | */ | |
1642 | ||
1643 | static inline void make_mc_bits(u8 *bits, struct net_device *dev) | |
1644 | { | |
1645 | struct dev_mc_list *dmi; | |
1646 | u32 crc; | |
1647 | ||
1648 | for (dmi=dev->mc_list; dmi; dmi=dmi->next) { | |
1649 | ||
1650 | crc = ether_crc(ETH_ALEN, dmi->dmi_addr); | |
1651 | /* | |
1652 | * The 8390 uses the 6 most significant bits of the | |
1653 | * CRC to index the multicast table. | |
1654 | */ | |
1655 | bits[crc>>29] |= (1<<((crc>>26)&7)); | |
1656 | } | |
1657 | } | |
1658 | ||
1da177e4 LT |
1659 | /** |
1660 | * do_set_multicast_list - set/clear multicast filter | |
1661 | * @dev: net device for which multicast filter is adjusted | |
1662 | * | |
b8ab2dc3 K |
1663 | * Set or clear the multicast filter for this adaptor. |
1664 | * Must be called with lock held. | |
1da177e4 LT |
1665 | */ |
1666 | ||
1667 | static void do_set_multicast_list(struct net_device *dev) | |
1668 | { | |
1669 | long e8390_base = dev->base_addr; | |
b8ab2dc3 K |
1670 | int i; |
1671 | struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev); | |
1672 | ||
1673 | if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) { | |
1674 | memset(ei_local->mcfilter, 0, 8); | |
1675 | if (dev->mc_list) | |
1676 | make_mc_bits(ei_local->mcfilter, dev); | |
1677 | } else { | |
1678 | /* set to accept-all */ | |
1679 | memset(ei_local->mcfilter, 0xFF, 8); | |
1680 | } | |
1681 | ||
b8ab2dc3 K |
1682 | outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD); |
1683 | for(i = 0; i < 8; i++) | |
1684 | { | |
1685 | outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i)); | |
1686 | } | |
1687 | outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD); | |
1da177e4 LT |
1688 | |
1689 | if(dev->flags&IFF_PROMISC) | |
1690 | outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR); | |
1691 | else if(dev->flags&IFF_ALLMULTI || dev->mc_list) | |
1692 | outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR); | |
1693 | else | |
1694 | outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); | |
f905703a K |
1695 | |
1696 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD); | |
1da177e4 LT |
1697 | } |
1698 | ||
1699 | /* | |
1700 | * Called without lock held. This is invoked from user context and may | |
1701 | * be parallel to just about everything else. Its also fairly quick and | |
1702 | * not called too often. Must protect against both bh and irq users | |
1703 | */ | |
1704 | ||
1705 | static void set_multicast_list(struct net_device *dev) | |
1706 | { | |
1707 | unsigned long flags; | |
1708 | ||
1709 | spin_lock_irqsave(&dev_lock(dev), flags); | |
1710 | do_set_multicast_list(dev); | |
1711 | spin_unlock_irqrestore(&dev_lock(dev), flags); | |
1712 | } | |
1713 | ||
1da177e4 LT |
1714 | /* This page of functions should be 8390 generic */ |
1715 | /* Follow National Semi's recommendations for initializing the "NIC". */ | |
1716 | ||
1717 | /** | |
1718 | * AX88190_init - initialize 8390 hardware | |
1719 | * @dev: network device to initialize | |
1720 | * @startp: boolean. non-zero value to initiate chip processing | |
1721 | * | |
1722 | * Must be called with lock held. | |
1723 | */ | |
1724 | ||
1725 | static void AX88190_init(struct net_device *dev, int startp) | |
1726 | { | |
1727 | axnet_dev_t *info = PRIV(dev); | |
1728 | long e8390_base = dev->base_addr; | |
1729 | struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); | |
1730 | int i; | |
1731 | int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48; | |
1732 | ||
1733 | if(sizeof(struct e8390_pkt_hdr)!=4) | |
1734 | panic("8390.c: header struct mispacked\n"); | |
1735 | /* Follow National Semi's recommendations for initing the DP83902. */ | |
1736 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */ | |
1737 | outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */ | |
1738 | /* Clear the remote byte count registers. */ | |
1739 | outb_p(0x00, e8390_base + EN0_RCNTLO); | |
1740 | outb_p(0x00, e8390_base + EN0_RCNTHI); | |
1741 | /* Set to monitor and loopback mode -- this is vital!. */ | |
1742 | outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */ | |
1743 | outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */ | |
1744 | /* Set the transmit page and receive ring. */ | |
1745 | outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR); | |
1746 | ei_local->tx1 = ei_local->tx2 = 0; | |
1747 | outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG); | |
1748 | outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/ | |
1749 | ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */ | |
1750 | outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG); | |
1751 | /* Clear the pending interrupts and mask. */ | |
1752 | outb_p(0xFF, e8390_base + EN0_ISR); | |
1753 | outb_p(0x00, e8390_base + EN0_IMR); | |
1754 | ||
1755 | /* Copy the station address into the DS8390 registers. */ | |
1756 | ||
1757 | outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */ | |
1758 | for(i = 0; i < 6; i++) | |
1759 | { | |
1760 | outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i)); | |
1761 | if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i]) | |
1762 | printk(KERN_ERR "Hw. address read/write mismap %d\n",i); | |
1763 | } | |
1da177e4 LT |
1764 | |
1765 | outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG); | |
1766 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); | |
1767 | ||
1768 | netif_start_queue(dev); | |
1769 | ei_local->tx1 = ei_local->tx2 = 0; | |
1770 | ei_local->txing = 0; | |
1771 | ||
ad3620a0 KK |
1772 | if (info->flags & IS_AX88790) /* select Internal PHY */ |
1773 | outb(0x10, e8390_base + AXNET_GPIO); | |
1774 | ||
1da177e4 LT |
1775 | if (startp) |
1776 | { | |
1777 | outb_p(0xff, e8390_base + EN0_ISR); | |
1778 | outb_p(ENISR_ALL, e8390_base + EN0_IMR); | |
1779 | outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD); | |
1780 | outb_p(E8390_TXCONFIG | info->duplex_flag, | |
1781 | e8390_base + EN0_TXCR); /* xmit on. */ | |
1782 | /* 3c503 TechMan says rxconfig only after the NIC is started. */ | |
1783 | outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */ | |
1784 | do_set_multicast_list(dev); /* (re)load the mcast table */ | |
1785 | } | |
1786 | } | |
1787 | ||
1788 | /* Trigger a transmit start, assuming the length is valid. | |
1789 | Always called with the page lock held */ | |
1790 | ||
1791 | static void NS8390_trigger_send(struct net_device *dev, unsigned int length, | |
1792 | int start_page) | |
1793 | { | |
1794 | long e8390_base = dev->base_addr; | |
1795 | struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev); | |
1796 | ||
1797 | if (inb_p(e8390_base) & E8390_TRANS) | |
1798 | { | |
1799 | printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n", | |
1800 | dev->name); | |
1801 | return; | |
1802 | } | |
1803 | outb_p(length & 0xff, e8390_base + EN0_TCNTLO); | |
1804 | outb_p(length >> 8, e8390_base + EN0_TCNTHI); | |
1805 | outb_p(start_page, e8390_base + EN0_TPSR); | |
1806 | outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD); | |
1807 | } |