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1da177e4 LT |
1 | /* epic100.c: A SMC 83c170 EPIC/100 Fast Ethernet driver for Linux. */ |
2 | /* | |
3 | Written/copyright 1997-2001 by Donald Becker. | |
4 | ||
5 | This software may be used and distributed according to the terms of | |
6 | the GNU General Public License (GPL), incorporated herein by reference. | |
7 | Drivers based on or derived from this code fall under the GPL and must | |
8 | retain the authorship, copyright and license notice. This file is not | |
9 | a complete program and may only be used when the entire operating | |
10 | system is licensed under the GPL. | |
11 | ||
12 | This driver is for the SMC83c170/175 "EPIC" series, as used on the | |
13 | SMC EtherPower II 9432 PCI adapter, and several CardBus cards. | |
14 | ||
15 | The author may be reached as becker@scyld.com, or C/O | |
16 | Scyld Computing Corporation | |
17 | 410 Severn Ave., Suite 210 | |
18 | Annapolis MD 21403 | |
19 | ||
20 | Information and updates available at | |
21 | http://www.scyld.com/network/epic100.html | |
22 | ||
23 | --------------------------------------------------------------------- | |
f3b197ac | 24 | |
1da177e4 | 25 | Linux kernel-specific changes: |
f3b197ac | 26 | |
1da177e4 LT |
27 | LK1.1.2 (jgarzik): |
28 | * Merge becker version 1.09 (4/08/2000) | |
29 | ||
30 | LK1.1.3: | |
31 | * Major bugfix to 1.09 driver (Francis Romieu) | |
f3b197ac | 32 | |
1da177e4 LT |
33 | LK1.1.4 (jgarzik): |
34 | * Merge becker test version 1.09 (5/29/2000) | |
35 | ||
36 | LK1.1.5: | |
37 | * Fix locking (jgarzik) | |
38 | * Limit 83c175 probe to ethernet-class PCI devices (rgooch) | |
39 | ||
40 | LK1.1.6: | |
41 | * Merge becker version 1.11 | |
42 | * Move pci_enable_device before any PCI BAR len checks | |
43 | ||
44 | LK1.1.7: | |
45 | * { fill me in } | |
46 | ||
47 | LK1.1.8: | |
48 | * ethtool driver info support (jgarzik) | |
49 | ||
50 | LK1.1.9: | |
51 | * ethtool media get/set support (jgarzik) | |
52 | ||
53 | LK1.1.10: | |
54 | * revert MII transceiver init change (jgarzik) | |
55 | ||
56 | LK1.1.11: | |
57 | * implement ETHTOOL_[GS]SET, _NWAY_RST, _[GS]MSGLVL, _GLINK (jgarzik) | |
58 | * replace some MII-related magic numbers with constants | |
59 | ||
60 | LK1.1.12: | |
61 | * fix power-up sequence | |
62 | ||
63 | LK1.1.13: | |
64 | * revert version 1.1.12, power-up sequence "fix" | |
65 | ||
66 | LK1.1.14 (Kryzsztof Halasa): | |
67 | * fix spurious bad initializations | |
68 | * pound phy a la SMSC's app note on the subject | |
f3b197ac | 69 | |
1da177e4 LT |
70 | AC1.1.14ac |
71 | * fix power up/down for ethtool that broke in 1.11 | |
72 | ||
73 | */ | |
74 | ||
75 | #define DRV_NAME "epic100" | |
76 | #define DRV_VERSION "1.11+LK1.1.14+AC1.1.14" | |
77 | #define DRV_RELDATE "June 2, 2004" | |
78 | ||
79 | /* The user-configurable values. | |
80 | These may be modified when a driver module is loaded.*/ | |
81 | ||
82 | static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ | |
83 | ||
84 | /* Used to pass the full-duplex flag, etc. */ | |
85 | #define MAX_UNITS 8 /* More are supported, limit only on options */ | |
86 | static int options[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; | |
87 | static int full_duplex[MAX_UNITS] = {-1, -1, -1, -1, -1, -1, -1, -1}; | |
88 | ||
89 | /* Set the copy breakpoint for the copy-only-tiny-frames scheme. | |
90 | Setting to > 1518 effectively disables this feature. */ | |
91 | static int rx_copybreak; | |
92 | ||
93 | /* Operational parameters that are set at compile time. */ | |
94 | ||
95 | /* Keep the ring sizes a power of two for operational efficiency. | |
96 | The compiler will convert <unsigned>'%'<2^N> into a bit mask. | |
97 | Making the Tx ring too large decreases the effectiveness of channel | |
98 | bonding and packet priority. | |
99 | There are no ill effects from too-large receive rings. */ | |
100 | #define TX_RING_SIZE 256 | |
101 | #define TX_QUEUE_LEN 240 /* Limit ring entries actually used. */ | |
102 | #define RX_RING_SIZE 256 | |
103 | #define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct epic_tx_desc) | |
104 | #define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct epic_rx_desc) | |
105 | ||
106 | /* Operational parameters that usually are not changed. */ | |
107 | /* Time in jiffies before concluding the transmitter is hung. */ | |
108 | #define TX_TIMEOUT (2*HZ) | |
109 | ||
110 | #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/ | |
111 | ||
112 | /* Bytes transferred to chip before transmission starts. */ | |
113 | /* Initial threshold, increased on underflow, rounded down to 4 byte units. */ | |
114 | #define TX_FIFO_THRESH 256 | |
115 | #define RX_FIFO_THRESH 1 /* 0-3, 0==32, 64,96, or 3==128 bytes */ | |
116 | ||
117 | #include <linux/config.h> | |
118 | #include <linux/module.h> | |
119 | #include <linux/kernel.h> | |
120 | #include <linux/string.h> | |
121 | #include <linux/timer.h> | |
122 | #include <linux/errno.h> | |
123 | #include <linux/ioport.h> | |
124 | #include <linux/slab.h> | |
125 | #include <linux/interrupt.h> | |
126 | #include <linux/pci.h> | |
127 | #include <linux/delay.h> | |
128 | #include <linux/netdevice.h> | |
129 | #include <linux/etherdevice.h> | |
130 | #include <linux/skbuff.h> | |
131 | #include <linux/init.h> | |
132 | #include <linux/spinlock.h> | |
133 | #include <linux/ethtool.h> | |
134 | #include <linux/mii.h> | |
135 | #include <linux/crc32.h> | |
136 | #include <linux/bitops.h> | |
137 | #include <asm/io.h> | |
138 | #include <asm/uaccess.h> | |
139 | ||
140 | /* These identify the driver base version and may not be removed. */ | |
141 | static char version[] __devinitdata = | |
142 | DRV_NAME ".c:v1.11 1/7/2001 Written by Donald Becker <becker@scyld.com>\n"; | |
143 | static char version2[] __devinitdata = | |
144 | " http://www.scyld.com/network/epic100.html\n"; | |
145 | static char version3[] __devinitdata = | |
146 | " (unofficial 2.4.x kernel port, version " DRV_VERSION ", " DRV_RELDATE ")\n"; | |
147 | ||
148 | MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); | |
149 | MODULE_DESCRIPTION("SMC 83c170 EPIC series Ethernet driver"); | |
150 | MODULE_LICENSE("GPL"); | |
151 | ||
152 | module_param(debug, int, 0); | |
153 | module_param(rx_copybreak, int, 0); | |
154 | module_param_array(options, int, NULL, 0); | |
155 | module_param_array(full_duplex, int, NULL, 0); | |
156 | MODULE_PARM_DESC(debug, "EPIC/100 debug level (0-5)"); | |
157 | MODULE_PARM_DESC(options, "EPIC/100: Bits 0-3: media type, bit 4: full duplex"); | |
158 | MODULE_PARM_DESC(rx_copybreak, "EPIC/100 copy breakpoint for copy-only-tiny-frames"); | |
159 | MODULE_PARM_DESC(full_duplex, "EPIC/100 full duplex setting(s) (1)"); | |
160 | ||
161 | /* | |
162 | Theory of Operation | |
163 | ||
164 | I. Board Compatibility | |
165 | ||
166 | This device driver is designed for the SMC "EPIC/100", the SMC | |
167 | single-chip Ethernet controllers for PCI. This chip is used on | |
168 | the SMC EtherPower II boards. | |
169 | ||
170 | II. Board-specific settings | |
171 | ||
172 | PCI bus devices are configured by the system at boot time, so no jumpers | |
173 | need to be set on the board. The system BIOS will assign the | |
174 | PCI INTA signal to a (preferably otherwise unused) system IRQ line. | |
175 | Note: Kernel versions earlier than 1.3.73 do not support shared PCI | |
176 | interrupt lines. | |
177 | ||
178 | III. Driver operation | |
179 | ||
180 | IIIa. Ring buffers | |
181 | ||
182 | IVb. References | |
183 | ||
184 | http://www.smsc.com/main/datasheets/83c171.pdf | |
185 | http://www.smsc.com/main/datasheets/83c175.pdf | |
186 | http://scyld.com/expert/NWay.html | |
187 | http://www.national.com/pf/DP/DP83840A.html | |
188 | ||
189 | IVc. Errata | |
190 | ||
191 | */ | |
192 | ||
193 | ||
1da177e4 LT |
194 | enum chip_capability_flags { MII_PWRDWN=1, TYPE2_INTR=2, NO_MII=4 }; |
195 | ||
196 | #define EPIC_TOTAL_SIZE 0x100 | |
197 | #define USE_IO_OPS 1 | |
1da177e4 LT |
198 | |
199 | typedef enum { | |
200 | SMSC_83C170_0, | |
201 | SMSC_83C170, | |
202 | SMSC_83C175, | |
203 | } chip_t; | |
204 | ||
205 | ||
206 | struct epic_chip_info { | |
207 | const char *name; | |
1da177e4 LT |
208 | int io_size; /* Needed for I/O region check or ioremap(). */ |
209 | int drv_flags; /* Driver use, intended as capability flags. */ | |
210 | }; | |
211 | ||
212 | ||
213 | /* indexed by chip_t */ | |
f71e1309 | 214 | static const struct epic_chip_info pci_id_tbl[] = { |
1da177e4 | 215 | { "SMSC EPIC/100 83c170", |
1f1bd5fc | 216 | EPIC_TOTAL_SIZE, TYPE2_INTR | NO_MII | MII_PWRDWN }, |
1da177e4 | 217 | { "SMSC EPIC/100 83c170", |
1f1bd5fc | 218 | EPIC_TOTAL_SIZE, TYPE2_INTR }, |
1da177e4 | 219 | { "SMSC EPIC/C 83c175", |
1f1bd5fc | 220 | EPIC_TOTAL_SIZE, TYPE2_INTR | MII_PWRDWN }, |
1da177e4 LT |
221 | }; |
222 | ||
223 | ||
224 | static struct pci_device_id epic_pci_tbl[] = { | |
225 | { 0x10B8, 0x0005, 0x1092, 0x0AB4, 0, 0, SMSC_83C170_0 }, | |
226 | { 0x10B8, 0x0005, PCI_ANY_ID, PCI_ANY_ID, 0, 0, SMSC_83C170 }, | |
227 | { 0x10B8, 0x0006, PCI_ANY_ID, PCI_ANY_ID, | |
228 | PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, SMSC_83C175 }, | |
229 | { 0,} | |
230 | }; | |
231 | MODULE_DEVICE_TABLE (pci, epic_pci_tbl); | |
232 | ||
f3b197ac | 233 | |
1da177e4 LT |
234 | #ifndef USE_IO_OPS |
235 | #undef inb | |
236 | #undef inw | |
237 | #undef inl | |
238 | #undef outb | |
239 | #undef outw | |
240 | #undef outl | |
241 | #define inb readb | |
242 | #define inw readw | |
243 | #define inl readl | |
244 | #define outb writeb | |
245 | #define outw writew | |
246 | #define outl writel | |
247 | #endif | |
248 | ||
249 | /* Offsets to registers, using the (ugh) SMC names. */ | |
250 | enum epic_registers { | |
251 | COMMAND=0, INTSTAT=4, INTMASK=8, GENCTL=0x0C, NVCTL=0x10, EECTL=0x14, | |
252 | PCIBurstCnt=0x18, | |
253 | TEST1=0x1C, CRCCNT=0x20, ALICNT=0x24, MPCNT=0x28, /* Rx error counters. */ | |
254 | MIICtrl=0x30, MIIData=0x34, MIICfg=0x38, | |
255 | LAN0=64, /* MAC address. */ | |
256 | MC0=80, /* Multicast filter table. */ | |
257 | RxCtrl=96, TxCtrl=112, TxSTAT=0x74, | |
258 | PRxCDAR=0x84, RxSTAT=0xA4, EarlyRx=0xB0, PTxCDAR=0xC4, TxThresh=0xDC, | |
259 | }; | |
260 | ||
261 | /* Interrupt register bits, using my own meaningful names. */ | |
262 | enum IntrStatus { | |
263 | TxIdle=0x40000, RxIdle=0x20000, IntrSummary=0x010000, | |
264 | PCIBusErr170=0x7000, PCIBusErr175=0x1000, PhyEvent175=0x8000, | |
265 | RxStarted=0x0800, RxEarlyWarn=0x0400, CntFull=0x0200, TxUnderrun=0x0100, | |
266 | TxEmpty=0x0080, TxDone=0x0020, RxError=0x0010, | |
267 | RxOverflow=0x0008, RxFull=0x0004, RxHeader=0x0002, RxDone=0x0001, | |
268 | }; | |
269 | enum CommandBits { | |
270 | StopRx=1, StartRx=2, TxQueued=4, RxQueued=8, | |
271 | StopTxDMA=0x20, StopRxDMA=0x40, RestartTx=0x80, | |
272 | }; | |
273 | ||
274 | #define EpicRemoved 0xffffffff /* Chip failed or removed (CardBus) */ | |
275 | ||
276 | #define EpicNapiEvent (TxEmpty | TxDone | \ | |
277 | RxDone | RxStarted | RxEarlyWarn | RxOverflow | RxFull) | |
278 | #define EpicNormalEvent (0x0000ffff & ~EpicNapiEvent) | |
279 | ||
f71e1309 | 280 | static const u16 media2miictl[16] = { |
1da177e4 LT |
281 | 0, 0x0C00, 0x0C00, 0x2000, 0x0100, 0x2100, 0, 0, |
282 | 0, 0, 0, 0, 0, 0, 0, 0 }; | |
283 | ||
284 | /* The EPIC100 Rx and Tx buffer descriptors. */ | |
285 | ||
286 | struct epic_tx_desc { | |
287 | u32 txstatus; | |
288 | u32 bufaddr; | |
289 | u32 buflength; | |
290 | u32 next; | |
291 | }; | |
292 | ||
293 | struct epic_rx_desc { | |
294 | u32 rxstatus; | |
295 | u32 bufaddr; | |
296 | u32 buflength; | |
297 | u32 next; | |
298 | }; | |
299 | ||
300 | enum desc_status_bits { | |
301 | DescOwn=0x8000, | |
302 | }; | |
303 | ||
304 | #define PRIV_ALIGN 15 /* Required alignment mask */ | |
305 | struct epic_private { | |
306 | struct epic_rx_desc *rx_ring; | |
307 | struct epic_tx_desc *tx_ring; | |
308 | /* The saved address of a sent-in-place packet/buffer, for skfree(). */ | |
309 | struct sk_buff* tx_skbuff[TX_RING_SIZE]; | |
310 | /* The addresses of receive-in-place skbuffs. */ | |
311 | struct sk_buff* rx_skbuff[RX_RING_SIZE]; | |
312 | ||
313 | dma_addr_t tx_ring_dma; | |
314 | dma_addr_t rx_ring_dma; | |
315 | ||
316 | /* Ring pointers. */ | |
317 | spinlock_t lock; /* Group with Tx control cache line. */ | |
318 | spinlock_t napi_lock; | |
319 | unsigned int reschedule_in_poll; | |
320 | unsigned int cur_tx, dirty_tx; | |
321 | ||
322 | unsigned int cur_rx, dirty_rx; | |
323 | u32 irq_mask; | |
324 | unsigned int rx_buf_sz; /* Based on MTU+slack. */ | |
325 | ||
326 | struct pci_dev *pci_dev; /* PCI bus location. */ | |
327 | int chip_id, chip_flags; | |
328 | ||
329 | struct net_device_stats stats; | |
330 | struct timer_list timer; /* Media selection timer. */ | |
331 | int tx_threshold; | |
332 | unsigned char mc_filter[8]; | |
333 | signed char phys[4]; /* MII device addresses. */ | |
334 | u16 advertising; /* NWay media advertisement */ | |
335 | int mii_phy_cnt; | |
336 | struct mii_if_info mii; | |
337 | unsigned int tx_full:1; /* The Tx queue is full. */ | |
338 | unsigned int default_port:4; /* Last dev->if_port value. */ | |
339 | }; | |
340 | ||
341 | static int epic_open(struct net_device *dev); | |
342 | static int read_eeprom(long ioaddr, int location); | |
343 | static int mdio_read(struct net_device *dev, int phy_id, int location); | |
344 | static void mdio_write(struct net_device *dev, int phy_id, int loc, int val); | |
345 | static void epic_restart(struct net_device *dev); | |
346 | static void epic_timer(unsigned long data); | |
347 | static void epic_tx_timeout(struct net_device *dev); | |
348 | static void epic_init_ring(struct net_device *dev); | |
349 | static int epic_start_xmit(struct sk_buff *skb, struct net_device *dev); | |
350 | static int epic_rx(struct net_device *dev, int budget); | |
351 | static int epic_poll(struct net_device *dev, int *budget); | |
352 | static irqreturn_t epic_interrupt(int irq, void *dev_instance, struct pt_regs *regs); | |
353 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
354 | static struct ethtool_ops netdev_ethtool_ops; | |
355 | static int epic_close(struct net_device *dev); | |
356 | static struct net_device_stats *epic_get_stats(struct net_device *dev); | |
357 | static void set_rx_mode(struct net_device *dev); | |
358 | ||
f3b197ac | 359 | |
1da177e4 LT |
360 | |
361 | static int __devinit epic_init_one (struct pci_dev *pdev, | |
362 | const struct pci_device_id *ent) | |
363 | { | |
364 | static int card_idx = -1; | |
365 | long ioaddr; | |
366 | int chip_idx = (int) ent->driver_data; | |
367 | int irq; | |
368 | struct net_device *dev; | |
369 | struct epic_private *ep; | |
370 | int i, ret, option = 0, duplex = 0; | |
371 | void *ring_space; | |
372 | dma_addr_t ring_dma; | |
373 | ||
374 | /* when built into the kernel, we only print version if device is found */ | |
375 | #ifndef MODULE | |
376 | static int printed_version; | |
377 | if (!printed_version++) | |
378 | printk (KERN_INFO "%s" KERN_INFO "%s" KERN_INFO "%s", | |
379 | version, version2, version3); | |
380 | #endif | |
f3b197ac | 381 | |
1da177e4 | 382 | card_idx++; |
f3b197ac | 383 | |
1da177e4 LT |
384 | ret = pci_enable_device(pdev); |
385 | if (ret) | |
386 | goto out; | |
387 | irq = pdev->irq; | |
388 | ||
389 | if (pci_resource_len(pdev, 0) < pci_id_tbl[chip_idx].io_size) { | |
390 | printk (KERN_ERR "card %d: no PCI region space\n", card_idx); | |
391 | ret = -ENODEV; | |
392 | goto err_out_disable; | |
393 | } | |
f3b197ac | 394 | |
1da177e4 LT |
395 | pci_set_master(pdev); |
396 | ||
397 | ret = pci_request_regions(pdev, DRV_NAME); | |
398 | if (ret < 0) | |
399 | goto err_out_disable; | |
400 | ||
401 | ret = -ENOMEM; | |
402 | ||
403 | dev = alloc_etherdev(sizeof (*ep)); | |
404 | if (!dev) { | |
405 | printk (KERN_ERR "card %d: no memory for eth device\n", card_idx); | |
406 | goto err_out_free_res; | |
407 | } | |
408 | SET_MODULE_OWNER(dev); | |
409 | SET_NETDEV_DEV(dev, &pdev->dev); | |
410 | ||
411 | #ifdef USE_IO_OPS | |
412 | ioaddr = pci_resource_start (pdev, 0); | |
413 | #else | |
414 | ioaddr = pci_resource_start (pdev, 1); | |
415 | ioaddr = (long) ioremap (ioaddr, pci_resource_len (pdev, 1)); | |
416 | if (!ioaddr) { | |
417 | printk (KERN_ERR DRV_NAME " %d: ioremap failed\n", card_idx); | |
418 | goto err_out_free_netdev; | |
419 | } | |
420 | #endif | |
421 | ||
422 | pci_set_drvdata(pdev, dev); | |
423 | ep = dev->priv; | |
424 | ep->mii.dev = dev; | |
425 | ep->mii.mdio_read = mdio_read; | |
426 | ep->mii.mdio_write = mdio_write; | |
427 | ep->mii.phy_id_mask = 0x1f; | |
428 | ep->mii.reg_num_mask = 0x1f; | |
429 | ||
430 | ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma); | |
431 | if (!ring_space) | |
432 | goto err_out_iounmap; | |
433 | ep->tx_ring = (struct epic_tx_desc *)ring_space; | |
434 | ep->tx_ring_dma = ring_dma; | |
435 | ||
436 | ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma); | |
437 | if (!ring_space) | |
438 | goto err_out_unmap_tx; | |
439 | ep->rx_ring = (struct epic_rx_desc *)ring_space; | |
440 | ep->rx_ring_dma = ring_dma; | |
441 | ||
442 | if (dev->mem_start) { | |
443 | option = dev->mem_start; | |
444 | duplex = (dev->mem_start & 16) ? 1 : 0; | |
445 | } else if (card_idx >= 0 && card_idx < MAX_UNITS) { | |
446 | if (options[card_idx] >= 0) | |
447 | option = options[card_idx]; | |
448 | if (full_duplex[card_idx] >= 0) | |
449 | duplex = full_duplex[card_idx]; | |
450 | } | |
451 | ||
452 | dev->base_addr = ioaddr; | |
453 | dev->irq = irq; | |
454 | ||
455 | spin_lock_init(&ep->lock); | |
456 | spin_lock_init(&ep->napi_lock); | |
457 | ep->reschedule_in_poll = 0; | |
458 | ||
459 | /* Bring the chip out of low-power mode. */ | |
460 | outl(0x4200, ioaddr + GENCTL); | |
461 | /* Magic?! If we don't set this bit the MII interface won't work. */ | |
462 | /* This magic is documented in SMSC app note 7.15 */ | |
463 | for (i = 16; i > 0; i--) | |
464 | outl(0x0008, ioaddr + TEST1); | |
465 | ||
466 | /* Turn on the MII transceiver. */ | |
467 | outl(0x12, ioaddr + MIICfg); | |
468 | if (chip_idx == 1) | |
469 | outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); | |
470 | outl(0x0200, ioaddr + GENCTL); | |
471 | ||
472 | /* Note: the '175 does not have a serial EEPROM. */ | |
473 | for (i = 0; i < 3; i++) | |
474 | ((u16 *)dev->dev_addr)[i] = le16_to_cpu(inw(ioaddr + LAN0 + i*4)); | |
475 | ||
476 | if (debug > 2) { | |
477 | printk(KERN_DEBUG DRV_NAME "(%s): EEPROM contents\n", | |
478 | pci_name(pdev)); | |
479 | for (i = 0; i < 64; i++) | |
480 | printk(" %4.4x%s", read_eeprom(ioaddr, i), | |
481 | i % 16 == 15 ? "\n" : ""); | |
482 | } | |
483 | ||
484 | ep->pci_dev = pdev; | |
485 | ep->chip_id = chip_idx; | |
486 | ep->chip_flags = pci_id_tbl[chip_idx].drv_flags; | |
f3b197ac | 487 | ep->irq_mask = |
1da177e4 LT |
488 | (ep->chip_flags & TYPE2_INTR ? PCIBusErr175 : PCIBusErr170) |
489 | | CntFull | TxUnderrun | EpicNapiEvent; | |
490 | ||
491 | /* Find the connected MII xcvrs. | |
492 | Doing this in open() would allow detecting external xcvrs later, but | |
493 | takes much time and no cards have external MII. */ | |
494 | { | |
495 | int phy, phy_idx = 0; | |
496 | for (phy = 1; phy < 32 && phy_idx < sizeof(ep->phys); phy++) { | |
497 | int mii_status = mdio_read(dev, phy, MII_BMSR); | |
498 | if (mii_status != 0xffff && mii_status != 0x0000) { | |
499 | ep->phys[phy_idx++] = phy; | |
500 | printk(KERN_INFO DRV_NAME "(%s): MII transceiver #%d control " | |
501 | "%4.4x status %4.4x.\n", | |
502 | pci_name(pdev), phy, mdio_read(dev, phy, 0), mii_status); | |
503 | } | |
504 | } | |
505 | ep->mii_phy_cnt = phy_idx; | |
506 | if (phy_idx != 0) { | |
507 | phy = ep->phys[0]; | |
508 | ep->mii.advertising = mdio_read(dev, phy, MII_ADVERTISE); | |
509 | printk(KERN_INFO DRV_NAME "(%s): Autonegotiation advertising %4.4x link " | |
510 | "partner %4.4x.\n", | |
511 | pci_name(pdev), ep->mii.advertising, mdio_read(dev, phy, 5)); | |
512 | } else if ( ! (ep->chip_flags & NO_MII)) { | |
513 | printk(KERN_WARNING DRV_NAME "(%s): ***WARNING***: No MII transceiver found!\n", | |
514 | pci_name(pdev)); | |
515 | /* Use the known PHY address of the EPII. */ | |
516 | ep->phys[0] = 3; | |
517 | } | |
518 | ep->mii.phy_id = ep->phys[0]; | |
519 | } | |
520 | ||
521 | /* Turn off the MII xcvr (175 only!), leave the chip in low-power mode. */ | |
522 | if (ep->chip_flags & MII_PWRDWN) | |
523 | outl(inl(ioaddr + NVCTL) & ~0x483C, ioaddr + NVCTL); | |
524 | outl(0x0008, ioaddr + GENCTL); | |
525 | ||
526 | /* The lower four bits are the media type. */ | |
527 | if (duplex) { | |
528 | ep->mii.force_media = ep->mii.full_duplex = 1; | |
529 | printk(KERN_INFO DRV_NAME "(%s): Forced full duplex operation requested.\n", | |
530 | pci_name(pdev)); | |
531 | } | |
532 | dev->if_port = ep->default_port = option; | |
533 | ||
534 | /* The Epic-specific entries in the device structure. */ | |
535 | dev->open = &epic_open; | |
536 | dev->hard_start_xmit = &epic_start_xmit; | |
537 | dev->stop = &epic_close; | |
538 | dev->get_stats = &epic_get_stats; | |
539 | dev->set_multicast_list = &set_rx_mode; | |
540 | dev->do_ioctl = &netdev_ioctl; | |
541 | dev->ethtool_ops = &netdev_ethtool_ops; | |
542 | dev->watchdog_timeo = TX_TIMEOUT; | |
543 | dev->tx_timeout = &epic_tx_timeout; | |
544 | dev->poll = epic_poll; | |
545 | dev->weight = 64; | |
546 | ||
547 | ret = register_netdev(dev); | |
548 | if (ret < 0) | |
549 | goto err_out_unmap_rx; | |
550 | ||
551 | printk(KERN_INFO "%s: %s at %#lx, IRQ %d, ", | |
552 | dev->name, pci_id_tbl[chip_idx].name, ioaddr, dev->irq); | |
553 | for (i = 0; i < 5; i++) | |
554 | printk("%2.2x:", dev->dev_addr[i]); | |
555 | printk("%2.2x.\n", dev->dev_addr[i]); | |
556 | ||
557 | out: | |
558 | return ret; | |
559 | ||
560 | err_out_unmap_rx: | |
561 | pci_free_consistent(pdev, RX_TOTAL_SIZE, ep->rx_ring, ep->rx_ring_dma); | |
562 | err_out_unmap_tx: | |
563 | pci_free_consistent(pdev, TX_TOTAL_SIZE, ep->tx_ring, ep->tx_ring_dma); | |
564 | err_out_iounmap: | |
565 | #ifndef USE_IO_OPS | |
566 | iounmap(ioaddr); | |
567 | err_out_free_netdev: | |
568 | #endif | |
569 | free_netdev(dev); | |
570 | err_out_free_res: | |
571 | pci_release_regions(pdev); | |
572 | err_out_disable: | |
573 | pci_disable_device(pdev); | |
574 | goto out; | |
575 | } | |
f3b197ac | 576 | |
1da177e4 LT |
577 | /* Serial EEPROM section. */ |
578 | ||
579 | /* EEPROM_Ctrl bits. */ | |
580 | #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */ | |
581 | #define EE_CS 0x02 /* EEPROM chip select. */ | |
582 | #define EE_DATA_WRITE 0x08 /* EEPROM chip data in. */ | |
583 | #define EE_WRITE_0 0x01 | |
584 | #define EE_WRITE_1 0x09 | |
585 | #define EE_DATA_READ 0x10 /* EEPROM chip data out. */ | |
586 | #define EE_ENB (0x0001 | EE_CS) | |
587 | ||
588 | /* Delay between EEPROM clock transitions. | |
589 | This serves to flush the operation to the PCI bus. | |
590 | */ | |
591 | ||
592 | #define eeprom_delay() inl(ee_addr) | |
593 | ||
594 | /* The EEPROM commands include the alway-set leading bit. */ | |
595 | #define EE_WRITE_CMD (5 << 6) | |
596 | #define EE_READ64_CMD (6 << 6) | |
597 | #define EE_READ256_CMD (6 << 8) | |
598 | #define EE_ERASE_CMD (7 << 6) | |
599 | ||
600 | static void epic_disable_int(struct net_device *dev, struct epic_private *ep) | |
601 | { | |
602 | long ioaddr = dev->base_addr; | |
603 | ||
604 | outl(0x00000000, ioaddr + INTMASK); | |
605 | } | |
606 | ||
607 | static inline void __epic_pci_commit(long ioaddr) | |
608 | { | |
609 | #ifndef USE_IO_OPS | |
610 | inl(ioaddr + INTMASK); | |
611 | #endif | |
612 | } | |
613 | ||
614 | static inline void epic_napi_irq_off(struct net_device *dev, | |
615 | struct epic_private *ep) | |
616 | { | |
617 | long ioaddr = dev->base_addr; | |
618 | ||
619 | outl(ep->irq_mask & ~EpicNapiEvent, ioaddr + INTMASK); | |
620 | __epic_pci_commit(ioaddr); | |
621 | } | |
622 | ||
623 | static inline void epic_napi_irq_on(struct net_device *dev, | |
624 | struct epic_private *ep) | |
625 | { | |
626 | long ioaddr = dev->base_addr; | |
627 | ||
628 | /* No need to commit possible posted write */ | |
629 | outl(ep->irq_mask | EpicNapiEvent, ioaddr + INTMASK); | |
630 | } | |
631 | ||
632 | static int __devinit read_eeprom(long ioaddr, int location) | |
633 | { | |
634 | int i; | |
635 | int retval = 0; | |
636 | long ee_addr = ioaddr + EECTL; | |
637 | int read_cmd = location | | |
638 | (inl(ee_addr) & 0x40 ? EE_READ64_CMD : EE_READ256_CMD); | |
639 | ||
640 | outl(EE_ENB & ~EE_CS, ee_addr); | |
641 | outl(EE_ENB, ee_addr); | |
642 | ||
643 | /* Shift the read command bits out. */ | |
644 | for (i = 12; i >= 0; i--) { | |
645 | short dataval = (read_cmd & (1 << i)) ? EE_WRITE_1 : EE_WRITE_0; | |
646 | outl(EE_ENB | dataval, ee_addr); | |
647 | eeprom_delay(); | |
648 | outl(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr); | |
649 | eeprom_delay(); | |
650 | } | |
651 | outl(EE_ENB, ee_addr); | |
652 | ||
653 | for (i = 16; i > 0; i--) { | |
654 | outl(EE_ENB | EE_SHIFT_CLK, ee_addr); | |
655 | eeprom_delay(); | |
656 | retval = (retval << 1) | ((inl(ee_addr) & EE_DATA_READ) ? 1 : 0); | |
657 | outl(EE_ENB, ee_addr); | |
658 | eeprom_delay(); | |
659 | } | |
660 | ||
661 | /* Terminate the EEPROM access. */ | |
662 | outl(EE_ENB & ~EE_CS, ee_addr); | |
663 | return retval; | |
664 | } | |
665 | ||
666 | #define MII_READOP 1 | |
667 | #define MII_WRITEOP 2 | |
668 | static int mdio_read(struct net_device *dev, int phy_id, int location) | |
669 | { | |
670 | long ioaddr = dev->base_addr; | |
671 | int read_cmd = (phy_id << 9) | (location << 4) | MII_READOP; | |
672 | int i; | |
673 | ||
674 | outl(read_cmd, ioaddr + MIICtrl); | |
675 | /* Typical operation takes 25 loops. */ | |
676 | for (i = 400; i > 0; i--) { | |
677 | barrier(); | |
678 | if ((inl(ioaddr + MIICtrl) & MII_READOP) == 0) { | |
679 | /* Work around read failure bug. */ | |
680 | if (phy_id == 1 && location < 6 | |
681 | && inw(ioaddr + MIIData) == 0xffff) { | |
682 | outl(read_cmd, ioaddr + MIICtrl); | |
683 | continue; | |
684 | } | |
685 | return inw(ioaddr + MIIData); | |
686 | } | |
687 | } | |
688 | return 0xffff; | |
689 | } | |
690 | ||
691 | static void mdio_write(struct net_device *dev, int phy_id, int loc, int value) | |
692 | { | |
693 | long ioaddr = dev->base_addr; | |
694 | int i; | |
695 | ||
696 | outw(value, ioaddr + MIIData); | |
697 | outl((phy_id << 9) | (loc << 4) | MII_WRITEOP, ioaddr + MIICtrl); | |
f3b197ac | 698 | for (i = 10000; i > 0; i--) { |
1da177e4 LT |
699 | barrier(); |
700 | if ((inl(ioaddr + MIICtrl) & MII_WRITEOP) == 0) | |
701 | break; | |
702 | } | |
703 | return; | |
704 | } | |
705 | ||
f3b197ac | 706 | |
1da177e4 LT |
707 | static int epic_open(struct net_device *dev) |
708 | { | |
709 | struct epic_private *ep = dev->priv; | |
710 | long ioaddr = dev->base_addr; | |
711 | int i; | |
712 | int retval; | |
713 | ||
714 | /* Soft reset the chip. */ | |
715 | outl(0x4001, ioaddr + GENCTL); | |
716 | ||
717 | if ((retval = request_irq(dev->irq, &epic_interrupt, SA_SHIRQ, dev->name, dev))) | |
718 | return retval; | |
719 | ||
720 | epic_init_ring(dev); | |
721 | ||
722 | outl(0x4000, ioaddr + GENCTL); | |
723 | /* This magic is documented in SMSC app note 7.15 */ | |
724 | for (i = 16; i > 0; i--) | |
725 | outl(0x0008, ioaddr + TEST1); | |
726 | ||
727 | /* Pull the chip out of low-power mode, enable interrupts, and set for | |
728 | PCI read multiple. The MIIcfg setting and strange write order are | |
729 | required by the details of which bits are reset and the transceiver | |
730 | wiring on the Ositech CardBus card. | |
731 | */ | |
732 | #if 0 | |
733 | outl(dev->if_port == 1 ? 0x13 : 0x12, ioaddr + MIICfg); | |
734 | #endif | |
735 | if (ep->chip_flags & MII_PWRDWN) | |
736 | outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); | |
737 | ||
738 | #if defined(__powerpc__) || defined(__sparc__) /* Big endian */ | |
739 | outl(0x4432 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); | |
740 | inl(ioaddr + GENCTL); | |
741 | outl(0x0432 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); | |
742 | #else | |
743 | outl(0x4412 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); | |
744 | inl(ioaddr + GENCTL); | |
745 | outl(0x0412 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); | |
746 | #endif | |
747 | ||
748 | udelay(20); /* Looks like EPII needs that if you want reliable RX init. FIXME: pci posting bug? */ | |
f3b197ac | 749 | |
1da177e4 LT |
750 | for (i = 0; i < 3; i++) |
751 | outl(cpu_to_le16(((u16*)dev->dev_addr)[i]), ioaddr + LAN0 + i*4); | |
752 | ||
753 | ep->tx_threshold = TX_FIFO_THRESH; | |
754 | outl(ep->tx_threshold, ioaddr + TxThresh); | |
755 | ||
756 | if (media2miictl[dev->if_port & 15]) { | |
757 | if (ep->mii_phy_cnt) | |
758 | mdio_write(dev, ep->phys[0], MII_BMCR, media2miictl[dev->if_port&15]); | |
759 | if (dev->if_port == 1) { | |
760 | if (debug > 1) | |
761 | printk(KERN_INFO "%s: Using the 10base2 transceiver, MII " | |
762 | "status %4.4x.\n", | |
763 | dev->name, mdio_read(dev, ep->phys[0], MII_BMSR)); | |
764 | } | |
765 | } else { | |
766 | int mii_lpa = mdio_read(dev, ep->phys[0], MII_LPA); | |
767 | if (mii_lpa != 0xffff) { | |
768 | if ((mii_lpa & LPA_100FULL) || (mii_lpa & 0x01C0) == LPA_10FULL) | |
769 | ep->mii.full_duplex = 1; | |
770 | else if (! (mii_lpa & LPA_LPACK)) | |
771 | mdio_write(dev, ep->phys[0], MII_BMCR, BMCR_ANENABLE|BMCR_ANRESTART); | |
772 | if (debug > 1) | |
773 | printk(KERN_INFO "%s: Setting %s-duplex based on MII xcvr %d" | |
774 | " register read of %4.4x.\n", dev->name, | |
775 | ep->mii.full_duplex ? "full" : "half", | |
776 | ep->phys[0], mii_lpa); | |
777 | } | |
778 | } | |
779 | ||
780 | outl(ep->mii.full_duplex ? 0x7F : 0x79, ioaddr + TxCtrl); | |
781 | outl(ep->rx_ring_dma, ioaddr + PRxCDAR); | |
782 | outl(ep->tx_ring_dma, ioaddr + PTxCDAR); | |
783 | ||
784 | /* Start the chip's Rx process. */ | |
785 | set_rx_mode(dev); | |
786 | outl(StartRx | RxQueued, ioaddr + COMMAND); | |
787 | ||
788 | netif_start_queue(dev); | |
789 | ||
790 | /* Enable interrupts by setting the interrupt mask. */ | |
791 | outl((ep->chip_flags & TYPE2_INTR ? PCIBusErr175 : PCIBusErr170) | |
f3b197ac | 792 | | CntFull | TxUnderrun |
1da177e4 LT |
793 | | RxError | RxHeader | EpicNapiEvent, ioaddr + INTMASK); |
794 | ||
795 | if (debug > 1) | |
796 | printk(KERN_DEBUG "%s: epic_open() ioaddr %lx IRQ %d status %4.4x " | |
797 | "%s-duplex.\n", | |
798 | dev->name, ioaddr, dev->irq, (int)inl(ioaddr + GENCTL), | |
799 | ep->mii.full_duplex ? "full" : "half"); | |
800 | ||
801 | /* Set the timer to switch to check for link beat and perhaps switch | |
802 | to an alternate media type. */ | |
803 | init_timer(&ep->timer); | |
804 | ep->timer.expires = jiffies + 3*HZ; | |
805 | ep->timer.data = (unsigned long)dev; | |
806 | ep->timer.function = &epic_timer; /* timer handler */ | |
807 | add_timer(&ep->timer); | |
808 | ||
809 | return 0; | |
810 | } | |
811 | ||
812 | /* Reset the chip to recover from a PCI transaction error. | |
813 | This may occur at interrupt time. */ | |
814 | static void epic_pause(struct net_device *dev) | |
815 | { | |
816 | long ioaddr = dev->base_addr; | |
817 | struct epic_private *ep = dev->priv; | |
818 | ||
819 | netif_stop_queue (dev); | |
f3b197ac | 820 | |
1da177e4 LT |
821 | /* Disable interrupts by clearing the interrupt mask. */ |
822 | outl(0x00000000, ioaddr + INTMASK); | |
823 | /* Stop the chip's Tx and Rx DMA processes. */ | |
824 | outw(StopRx | StopTxDMA | StopRxDMA, ioaddr + COMMAND); | |
825 | ||
826 | /* Update the error counts. */ | |
827 | if (inw(ioaddr + COMMAND) != 0xffff) { | |
828 | ep->stats.rx_missed_errors += inb(ioaddr + MPCNT); | |
829 | ep->stats.rx_frame_errors += inb(ioaddr + ALICNT); | |
830 | ep->stats.rx_crc_errors += inb(ioaddr + CRCCNT); | |
831 | } | |
832 | ||
833 | /* Remove the packets on the Rx queue. */ | |
834 | epic_rx(dev, RX_RING_SIZE); | |
835 | } | |
836 | ||
837 | static void epic_restart(struct net_device *dev) | |
838 | { | |
839 | long ioaddr = dev->base_addr; | |
840 | struct epic_private *ep = dev->priv; | |
841 | int i; | |
842 | ||
843 | /* Soft reset the chip. */ | |
844 | outl(0x4001, ioaddr + GENCTL); | |
845 | ||
846 | printk(KERN_DEBUG "%s: Restarting the EPIC chip, Rx %d/%d Tx %d/%d.\n", | |
847 | dev->name, ep->cur_rx, ep->dirty_rx, ep->dirty_tx, ep->cur_tx); | |
848 | udelay(1); | |
849 | ||
850 | /* This magic is documented in SMSC app note 7.15 */ | |
851 | for (i = 16; i > 0; i--) | |
852 | outl(0x0008, ioaddr + TEST1); | |
853 | ||
854 | #if defined(__powerpc__) || defined(__sparc__) /* Big endian */ | |
855 | outl(0x0432 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); | |
856 | #else | |
857 | outl(0x0412 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); | |
858 | #endif | |
859 | outl(dev->if_port == 1 ? 0x13 : 0x12, ioaddr + MIICfg); | |
860 | if (ep->chip_flags & MII_PWRDWN) | |
861 | outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); | |
862 | ||
863 | for (i = 0; i < 3; i++) | |
864 | outl(cpu_to_le16(((u16*)dev->dev_addr)[i]), ioaddr + LAN0 + i*4); | |
865 | ||
866 | ep->tx_threshold = TX_FIFO_THRESH; | |
867 | outl(ep->tx_threshold, ioaddr + TxThresh); | |
868 | outl(ep->mii.full_duplex ? 0x7F : 0x79, ioaddr + TxCtrl); | |
869 | outl(ep->rx_ring_dma + (ep->cur_rx%RX_RING_SIZE)* | |
870 | sizeof(struct epic_rx_desc), ioaddr + PRxCDAR); | |
871 | outl(ep->tx_ring_dma + (ep->dirty_tx%TX_RING_SIZE)* | |
872 | sizeof(struct epic_tx_desc), ioaddr + PTxCDAR); | |
873 | ||
874 | /* Start the chip's Rx process. */ | |
875 | set_rx_mode(dev); | |
876 | outl(StartRx | RxQueued, ioaddr + COMMAND); | |
877 | ||
878 | /* Enable interrupts by setting the interrupt mask. */ | |
879 | outl((ep->chip_flags & TYPE2_INTR ? PCIBusErr175 : PCIBusErr170) | |
880 | | CntFull | TxUnderrun | |
881 | | RxError | RxHeader | EpicNapiEvent, ioaddr + INTMASK); | |
882 | ||
883 | printk(KERN_DEBUG "%s: epic_restart() done, cmd status %4.4x, ctl %4.4x" | |
884 | " interrupt %4.4x.\n", | |
885 | dev->name, (int)inl(ioaddr + COMMAND), (int)inl(ioaddr + GENCTL), | |
886 | (int)inl(ioaddr + INTSTAT)); | |
887 | return; | |
888 | } | |
889 | ||
890 | static void check_media(struct net_device *dev) | |
891 | { | |
892 | struct epic_private *ep = dev->priv; | |
893 | long ioaddr = dev->base_addr; | |
894 | int mii_lpa = ep->mii_phy_cnt ? mdio_read(dev, ep->phys[0], MII_LPA) : 0; | |
895 | int negotiated = mii_lpa & ep->mii.advertising; | |
896 | int duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040; | |
897 | ||
898 | if (ep->mii.force_media) | |
899 | return; | |
900 | if (mii_lpa == 0xffff) /* Bogus read */ | |
901 | return; | |
902 | if (ep->mii.full_duplex != duplex) { | |
903 | ep->mii.full_duplex = duplex; | |
904 | printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d link" | |
905 | " partner capability of %4.4x.\n", dev->name, | |
906 | ep->mii.full_duplex ? "full" : "half", ep->phys[0], mii_lpa); | |
907 | outl(ep->mii.full_duplex ? 0x7F : 0x79, ioaddr + TxCtrl); | |
908 | } | |
909 | } | |
910 | ||
911 | static void epic_timer(unsigned long data) | |
912 | { | |
913 | struct net_device *dev = (struct net_device *)data; | |
914 | struct epic_private *ep = dev->priv; | |
915 | long ioaddr = dev->base_addr; | |
916 | int next_tick = 5*HZ; | |
917 | ||
918 | if (debug > 3) { | |
919 | printk(KERN_DEBUG "%s: Media monitor tick, Tx status %8.8x.\n", | |
920 | dev->name, (int)inl(ioaddr + TxSTAT)); | |
921 | printk(KERN_DEBUG "%s: Other registers are IntMask %4.4x " | |
922 | "IntStatus %4.4x RxStatus %4.4x.\n", | |
923 | dev->name, (int)inl(ioaddr + INTMASK), | |
924 | (int)inl(ioaddr + INTSTAT), (int)inl(ioaddr + RxSTAT)); | |
925 | } | |
926 | ||
927 | check_media(dev); | |
928 | ||
929 | ep->timer.expires = jiffies + next_tick; | |
930 | add_timer(&ep->timer); | |
931 | } | |
932 | ||
933 | static void epic_tx_timeout(struct net_device *dev) | |
934 | { | |
935 | struct epic_private *ep = dev->priv; | |
936 | long ioaddr = dev->base_addr; | |
937 | ||
938 | if (debug > 0) { | |
939 | printk(KERN_WARNING "%s: Transmit timeout using MII device, " | |
940 | "Tx status %4.4x.\n", | |
941 | dev->name, (int)inw(ioaddr + TxSTAT)); | |
942 | if (debug > 1) { | |
943 | printk(KERN_DEBUG "%s: Tx indices: dirty_tx %d, cur_tx %d.\n", | |
944 | dev->name, ep->dirty_tx, ep->cur_tx); | |
945 | } | |
946 | } | |
947 | if (inw(ioaddr + TxSTAT) & 0x10) { /* Tx FIFO underflow. */ | |
948 | ep->stats.tx_fifo_errors++; | |
949 | outl(RestartTx, ioaddr + COMMAND); | |
950 | } else { | |
951 | epic_restart(dev); | |
952 | outl(TxQueued, dev->base_addr + COMMAND); | |
953 | } | |
954 | ||
955 | dev->trans_start = jiffies; | |
956 | ep->stats.tx_errors++; | |
957 | if (!ep->tx_full) | |
958 | netif_wake_queue(dev); | |
959 | } | |
960 | ||
961 | /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ | |
962 | static void epic_init_ring(struct net_device *dev) | |
963 | { | |
964 | struct epic_private *ep = dev->priv; | |
965 | int i; | |
966 | ||
967 | ep->tx_full = 0; | |
968 | ep->dirty_tx = ep->cur_tx = 0; | |
969 | ep->cur_rx = ep->dirty_rx = 0; | |
970 | ep->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); | |
971 | ||
972 | /* Initialize all Rx descriptors. */ | |
973 | for (i = 0; i < RX_RING_SIZE; i++) { | |
974 | ep->rx_ring[i].rxstatus = 0; | |
975 | ep->rx_ring[i].buflength = cpu_to_le32(ep->rx_buf_sz); | |
f3b197ac | 976 | ep->rx_ring[i].next = ep->rx_ring_dma + |
1da177e4 LT |
977 | (i+1)*sizeof(struct epic_rx_desc); |
978 | ep->rx_skbuff[i] = NULL; | |
979 | } | |
980 | /* Mark the last entry as wrapping the ring. */ | |
981 | ep->rx_ring[i-1].next = ep->rx_ring_dma; | |
982 | ||
983 | /* Fill in the Rx buffers. Handle allocation failure gracefully. */ | |
984 | for (i = 0; i < RX_RING_SIZE; i++) { | |
985 | struct sk_buff *skb = dev_alloc_skb(ep->rx_buf_sz); | |
986 | ep->rx_skbuff[i] = skb; | |
987 | if (skb == NULL) | |
988 | break; | |
989 | skb->dev = dev; /* Mark as being used by this device. */ | |
990 | skb_reserve(skb, 2); /* 16 byte align the IP header. */ | |
f3b197ac | 991 | ep->rx_ring[i].bufaddr = pci_map_single(ep->pci_dev, |
689be439 | 992 | skb->data, ep->rx_buf_sz, PCI_DMA_FROMDEVICE); |
1da177e4 LT |
993 | ep->rx_ring[i].rxstatus = cpu_to_le32(DescOwn); |
994 | } | |
995 | ep->dirty_rx = (unsigned int)(i - RX_RING_SIZE); | |
996 | ||
997 | /* The Tx buffer descriptor is filled in as needed, but we | |
998 | do need to clear the ownership bit. */ | |
999 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1000 | ep->tx_skbuff[i] = NULL; | |
1001 | ep->tx_ring[i].txstatus = 0x0000; | |
f3b197ac | 1002 | ep->tx_ring[i].next = ep->tx_ring_dma + |
1da177e4 LT |
1003 | (i+1)*sizeof(struct epic_tx_desc); |
1004 | } | |
1005 | ep->tx_ring[i-1].next = ep->tx_ring_dma; | |
1006 | return; | |
1007 | } | |
1008 | ||
1009 | static int epic_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
1010 | { | |
1011 | struct epic_private *ep = dev->priv; | |
1012 | int entry, free_count; | |
1013 | u32 ctrl_word; | |
1014 | unsigned long flags; | |
f3b197ac | 1015 | |
5b057c6b HX |
1016 | if (skb_padto(skb, ETH_ZLEN)) |
1017 | return 0; | |
1da177e4 LT |
1018 | |
1019 | /* Caution: the write order is important here, set the field with the | |
1020 | "ownership" bit last. */ | |
1021 | ||
1022 | /* Calculate the next Tx descriptor entry. */ | |
1023 | spin_lock_irqsave(&ep->lock, flags); | |
1024 | free_count = ep->cur_tx - ep->dirty_tx; | |
1025 | entry = ep->cur_tx % TX_RING_SIZE; | |
1026 | ||
1027 | ep->tx_skbuff[entry] = skb; | |
f3b197ac | 1028 | ep->tx_ring[entry].bufaddr = pci_map_single(ep->pci_dev, skb->data, |
1da177e4 LT |
1029 | skb->len, PCI_DMA_TODEVICE); |
1030 | if (free_count < TX_QUEUE_LEN/2) {/* Typical path */ | |
1031 | ctrl_word = cpu_to_le32(0x100000); /* No interrupt */ | |
1032 | } else if (free_count == TX_QUEUE_LEN/2) { | |
1033 | ctrl_word = cpu_to_le32(0x140000); /* Tx-done intr. */ | |
1034 | } else if (free_count < TX_QUEUE_LEN - 1) { | |
1035 | ctrl_word = cpu_to_le32(0x100000); /* No Tx-done intr. */ | |
1036 | } else { | |
1037 | /* Leave room for an additional entry. */ | |
1038 | ctrl_word = cpu_to_le32(0x140000); /* Tx-done intr. */ | |
1039 | ep->tx_full = 1; | |
1040 | } | |
1041 | ep->tx_ring[entry].buflength = ctrl_word | cpu_to_le32(skb->len); | |
1042 | ep->tx_ring[entry].txstatus = | |
1043 | ((skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN) << 16) | |
1044 | | cpu_to_le32(DescOwn); | |
1045 | ||
1046 | ep->cur_tx++; | |
1047 | if (ep->tx_full) | |
1048 | netif_stop_queue(dev); | |
1049 | ||
1050 | spin_unlock_irqrestore(&ep->lock, flags); | |
1051 | /* Trigger an immediate transmit demand. */ | |
1052 | outl(TxQueued, dev->base_addr + COMMAND); | |
1053 | ||
1054 | dev->trans_start = jiffies; | |
1055 | if (debug > 4) | |
1056 | printk(KERN_DEBUG "%s: Queued Tx packet size %d to slot %d, " | |
1057 | "flag %2.2x Tx status %8.8x.\n", | |
1058 | dev->name, (int)skb->len, entry, ctrl_word, | |
1059 | (int)inl(dev->base_addr + TxSTAT)); | |
1060 | ||
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | static void epic_tx_error(struct net_device *dev, struct epic_private *ep, | |
1065 | int status) | |
1066 | { | |
1067 | struct net_device_stats *stats = &ep->stats; | |
1068 | ||
1069 | #ifndef final_version | |
1070 | /* There was an major error, log it. */ | |
1071 | if (debug > 1) | |
1072 | printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x.\n", | |
1073 | dev->name, status); | |
1074 | #endif | |
1075 | stats->tx_errors++; | |
1076 | if (status & 0x1050) | |
1077 | stats->tx_aborted_errors++; | |
1078 | if (status & 0x0008) | |
1079 | stats->tx_carrier_errors++; | |
1080 | if (status & 0x0040) | |
1081 | stats->tx_window_errors++; | |
1082 | if (status & 0x0010) | |
1083 | stats->tx_fifo_errors++; | |
1084 | } | |
1085 | ||
1086 | static void epic_tx(struct net_device *dev, struct epic_private *ep) | |
1087 | { | |
1088 | unsigned int dirty_tx, cur_tx; | |
1089 | ||
1090 | /* | |
1091 | * Note: if this lock becomes a problem we can narrow the locked | |
1092 | * region at the cost of occasionally grabbing the lock more times. | |
1093 | */ | |
1094 | cur_tx = ep->cur_tx; | |
1095 | for (dirty_tx = ep->dirty_tx; cur_tx - dirty_tx > 0; dirty_tx++) { | |
1096 | struct sk_buff *skb; | |
1097 | int entry = dirty_tx % TX_RING_SIZE; | |
1098 | int txstatus = le32_to_cpu(ep->tx_ring[entry].txstatus); | |
1099 | ||
1100 | if (txstatus & DescOwn) | |
1101 | break; /* It still hasn't been Txed */ | |
1102 | ||
1103 | if (likely(txstatus & 0x0001)) { | |
1104 | ep->stats.collisions += (txstatus >> 8) & 15; | |
1105 | ep->stats.tx_packets++; | |
1106 | ep->stats.tx_bytes += ep->tx_skbuff[entry]->len; | |
1107 | } else | |
1108 | epic_tx_error(dev, ep, txstatus); | |
1109 | ||
1110 | /* Free the original skb. */ | |
1111 | skb = ep->tx_skbuff[entry]; | |
f3b197ac | 1112 | pci_unmap_single(ep->pci_dev, ep->tx_ring[entry].bufaddr, |
1da177e4 LT |
1113 | skb->len, PCI_DMA_TODEVICE); |
1114 | dev_kfree_skb_irq(skb); | |
1115 | ep->tx_skbuff[entry] = NULL; | |
1116 | } | |
1117 | ||
1118 | #ifndef final_version | |
1119 | if (cur_tx - dirty_tx > TX_RING_SIZE) { | |
1120 | printk(KERN_WARNING | |
1121 | "%s: Out-of-sync dirty pointer, %d vs. %d, full=%d.\n", | |
1122 | dev->name, dirty_tx, cur_tx, ep->tx_full); | |
1123 | dirty_tx += TX_RING_SIZE; | |
1124 | } | |
1125 | #endif | |
1126 | ep->dirty_tx = dirty_tx; | |
1127 | if (ep->tx_full && cur_tx - dirty_tx < TX_QUEUE_LEN - 4) { | |
1128 | /* The ring is no longer full, allow new TX entries. */ | |
1129 | ep->tx_full = 0; | |
1130 | netif_wake_queue(dev); | |
1131 | } | |
1132 | } | |
1133 | ||
1134 | /* The interrupt handler does all of the Rx thread work and cleans up | |
1135 | after the Tx thread. */ | |
1136 | static irqreturn_t epic_interrupt(int irq, void *dev_instance, struct pt_regs *regs) | |
1137 | { | |
1138 | struct net_device *dev = dev_instance; | |
1139 | struct epic_private *ep = dev->priv; | |
1140 | long ioaddr = dev->base_addr; | |
1141 | unsigned int handled = 0; | |
1142 | int status; | |
1143 | ||
1144 | status = inl(ioaddr + INTSTAT); | |
1145 | /* Acknowledge all of the current interrupt sources ASAP. */ | |
1146 | outl(status & EpicNormalEvent, ioaddr + INTSTAT); | |
1147 | ||
1148 | if (debug > 4) { | |
1149 | printk(KERN_DEBUG "%s: Interrupt, status=%#8.8x new " | |
1150 | "intstat=%#8.8x.\n", dev->name, status, | |
1151 | (int)inl(ioaddr + INTSTAT)); | |
1152 | } | |
1153 | ||
1154 | if ((status & IntrSummary) == 0) | |
1155 | goto out; | |
1156 | ||
1157 | handled = 1; | |
1158 | ||
1159 | if ((status & EpicNapiEvent) && !ep->reschedule_in_poll) { | |
1160 | spin_lock(&ep->napi_lock); | |
1161 | if (netif_rx_schedule_prep(dev)) { | |
1162 | epic_napi_irq_off(dev, ep); | |
1163 | __netif_rx_schedule(dev); | |
1164 | } else | |
1165 | ep->reschedule_in_poll++; | |
1166 | spin_unlock(&ep->napi_lock); | |
1167 | } | |
1168 | status &= ~EpicNapiEvent; | |
1169 | ||
1170 | /* Check uncommon events all at once. */ | |
1171 | if (status & (CntFull | TxUnderrun | PCIBusErr170 | PCIBusErr175)) { | |
1172 | if (status == EpicRemoved) | |
1173 | goto out; | |
1174 | ||
1175 | /* Always update the error counts to avoid overhead later. */ | |
1176 | ep->stats.rx_missed_errors += inb(ioaddr + MPCNT); | |
1177 | ep->stats.rx_frame_errors += inb(ioaddr + ALICNT); | |
1178 | ep->stats.rx_crc_errors += inb(ioaddr + CRCCNT); | |
1179 | ||
1180 | if (status & TxUnderrun) { /* Tx FIFO underflow. */ | |
1181 | ep->stats.tx_fifo_errors++; | |
1182 | outl(ep->tx_threshold += 128, ioaddr + TxThresh); | |
1183 | /* Restart the transmit process. */ | |
1184 | outl(RestartTx, ioaddr + COMMAND); | |
1185 | } | |
1186 | if (status & PCIBusErr170) { | |
1187 | printk(KERN_ERR "%s: PCI Bus Error! status %4.4x.\n", | |
1188 | dev->name, status); | |
1189 | epic_pause(dev); | |
1190 | epic_restart(dev); | |
1191 | } | |
1192 | /* Clear all error sources. */ | |
1193 | outl(status & 0x7f18, ioaddr + INTSTAT); | |
1194 | } | |
1195 | ||
1196 | out: | |
1197 | if (debug > 3) { | |
1198 | printk(KERN_DEBUG "%s: exit interrupt, intr_status=%#4.4x.\n", | |
1199 | dev->name, status); | |
1200 | } | |
1201 | ||
1202 | return IRQ_RETVAL(handled); | |
1203 | } | |
1204 | ||
1205 | static int epic_rx(struct net_device *dev, int budget) | |
1206 | { | |
1207 | struct epic_private *ep = dev->priv; | |
1208 | int entry = ep->cur_rx % RX_RING_SIZE; | |
1209 | int rx_work_limit = ep->dirty_rx + RX_RING_SIZE - ep->cur_rx; | |
1210 | int work_done = 0; | |
1211 | ||
1212 | if (debug > 4) | |
1213 | printk(KERN_DEBUG " In epic_rx(), entry %d %8.8x.\n", entry, | |
1214 | ep->rx_ring[entry].rxstatus); | |
1215 | ||
1216 | if (rx_work_limit > budget) | |
1217 | rx_work_limit = budget; | |
1218 | ||
1219 | /* If we own the next entry, it's a new packet. Send it up. */ | |
1220 | while ((ep->rx_ring[entry].rxstatus & cpu_to_le32(DescOwn)) == 0) { | |
1221 | int status = le32_to_cpu(ep->rx_ring[entry].rxstatus); | |
1222 | ||
1223 | if (debug > 4) | |
1224 | printk(KERN_DEBUG " epic_rx() status was %8.8x.\n", status); | |
1225 | if (--rx_work_limit < 0) | |
1226 | break; | |
1227 | if (status & 0x2006) { | |
1228 | if (debug > 2) | |
1229 | printk(KERN_DEBUG "%s: epic_rx() error status was %8.8x.\n", | |
1230 | dev->name, status); | |
1231 | if (status & 0x2000) { | |
1232 | printk(KERN_WARNING "%s: Oversized Ethernet frame spanned " | |
1233 | "multiple buffers, status %4.4x!\n", dev->name, status); | |
1234 | ep->stats.rx_length_errors++; | |
1235 | } else if (status & 0x0006) | |
1236 | /* Rx Frame errors are counted in hardware. */ | |
1237 | ep->stats.rx_errors++; | |
1238 | } else { | |
1239 | /* Malloc up new buffer, compatible with net-2e. */ | |
1240 | /* Omit the four octet CRC from the length. */ | |
1241 | short pkt_len = (status >> 16) - 4; | |
1242 | struct sk_buff *skb; | |
1243 | ||
1244 | if (pkt_len > PKT_BUF_SZ - 4) { | |
1245 | printk(KERN_ERR "%s: Oversized Ethernet frame, status %x " | |
1246 | "%d bytes.\n", | |
1247 | dev->name, status, pkt_len); | |
1248 | pkt_len = 1514; | |
1249 | } | |
1250 | /* Check if the packet is long enough to accept without copying | |
1251 | to a minimally-sized skbuff. */ | |
1252 | if (pkt_len < rx_copybreak | |
1253 | && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { | |
1254 | skb->dev = dev; | |
1255 | skb_reserve(skb, 2); /* 16 byte align the IP header */ | |
1256 | pci_dma_sync_single_for_cpu(ep->pci_dev, | |
1257 | ep->rx_ring[entry].bufaddr, | |
1258 | ep->rx_buf_sz, | |
1259 | PCI_DMA_FROMDEVICE); | |
689be439 | 1260 | eth_copy_and_sum(skb, ep->rx_skbuff[entry]->data, pkt_len, 0); |
1da177e4 LT |
1261 | skb_put(skb, pkt_len); |
1262 | pci_dma_sync_single_for_device(ep->pci_dev, | |
1263 | ep->rx_ring[entry].bufaddr, | |
1264 | ep->rx_buf_sz, | |
1265 | PCI_DMA_FROMDEVICE); | |
1266 | } else { | |
f3b197ac JG |
1267 | pci_unmap_single(ep->pci_dev, |
1268 | ep->rx_ring[entry].bufaddr, | |
1da177e4 LT |
1269 | ep->rx_buf_sz, PCI_DMA_FROMDEVICE); |
1270 | skb_put(skb = ep->rx_skbuff[entry], pkt_len); | |
1271 | ep->rx_skbuff[entry] = NULL; | |
1272 | } | |
1273 | skb->protocol = eth_type_trans(skb, dev); | |
1274 | netif_receive_skb(skb); | |
1275 | dev->last_rx = jiffies; | |
1276 | ep->stats.rx_packets++; | |
1277 | ep->stats.rx_bytes += pkt_len; | |
1278 | } | |
1279 | work_done++; | |
1280 | entry = (++ep->cur_rx) % RX_RING_SIZE; | |
1281 | } | |
1282 | ||
1283 | /* Refill the Rx ring buffers. */ | |
1284 | for (; ep->cur_rx - ep->dirty_rx > 0; ep->dirty_rx++) { | |
1285 | entry = ep->dirty_rx % RX_RING_SIZE; | |
1286 | if (ep->rx_skbuff[entry] == NULL) { | |
1287 | struct sk_buff *skb; | |
1288 | skb = ep->rx_skbuff[entry] = dev_alloc_skb(ep->rx_buf_sz); | |
1289 | if (skb == NULL) | |
1290 | break; | |
1291 | skb->dev = dev; /* Mark as being used by this device. */ | |
1292 | skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ | |
f3b197ac | 1293 | ep->rx_ring[entry].bufaddr = pci_map_single(ep->pci_dev, |
689be439 | 1294 | skb->data, ep->rx_buf_sz, PCI_DMA_FROMDEVICE); |
1da177e4 LT |
1295 | work_done++; |
1296 | } | |
1297 | ep->rx_ring[entry].rxstatus = cpu_to_le32(DescOwn); | |
1298 | } | |
1299 | return work_done; | |
1300 | } | |
1301 | ||
1302 | static void epic_rx_err(struct net_device *dev, struct epic_private *ep) | |
1303 | { | |
1304 | long ioaddr = dev->base_addr; | |
1305 | int status; | |
1306 | ||
1307 | status = inl(ioaddr + INTSTAT); | |
1308 | ||
1309 | if (status == EpicRemoved) | |
1310 | return; | |
1311 | if (status & RxOverflow) /* Missed a Rx frame. */ | |
1312 | ep->stats.rx_errors++; | |
1313 | if (status & (RxOverflow | RxFull)) | |
1314 | outw(RxQueued, ioaddr + COMMAND); | |
1315 | } | |
1316 | ||
1317 | static int epic_poll(struct net_device *dev, int *budget) | |
1318 | { | |
1319 | struct epic_private *ep = dev->priv; | |
b7b1d202 | 1320 | int work_done = 0, orig_budget; |
1da177e4 LT |
1321 | long ioaddr = dev->base_addr; |
1322 | ||
1323 | orig_budget = (*budget > dev->quota) ? dev->quota : *budget; | |
1324 | ||
1325 | rx_action: | |
1326 | ||
1327 | epic_tx(dev, ep); | |
1328 | ||
b7b1d202 | 1329 | work_done += epic_rx(dev, *budget); |
1da177e4 LT |
1330 | |
1331 | epic_rx_err(dev, ep); | |
1332 | ||
1333 | *budget -= work_done; | |
1334 | dev->quota -= work_done; | |
1335 | ||
1336 | if (netif_running(dev) && (work_done < orig_budget)) { | |
1337 | unsigned long flags; | |
1338 | int more; | |
1339 | ||
1340 | /* A bit baroque but it avoids a (space hungry) spin_unlock */ | |
1341 | ||
1342 | spin_lock_irqsave(&ep->napi_lock, flags); | |
1343 | ||
1344 | more = ep->reschedule_in_poll; | |
1345 | if (!more) { | |
1346 | __netif_rx_complete(dev); | |
1347 | outl(EpicNapiEvent, ioaddr + INTSTAT); | |
1348 | epic_napi_irq_on(dev, ep); | |
1349 | } else | |
1350 | ep->reschedule_in_poll--; | |
1351 | ||
1352 | spin_unlock_irqrestore(&ep->napi_lock, flags); | |
1353 | ||
1354 | if (more) | |
1355 | goto rx_action; | |
1356 | } | |
1357 | ||
1358 | return (work_done >= orig_budget); | |
1359 | } | |
1360 | ||
1361 | static int epic_close(struct net_device *dev) | |
1362 | { | |
1363 | long ioaddr = dev->base_addr; | |
1364 | struct epic_private *ep = dev->priv; | |
1365 | struct sk_buff *skb; | |
1366 | int i; | |
1367 | ||
1368 | netif_stop_queue(dev); | |
1369 | ||
1370 | if (debug > 1) | |
1371 | printk(KERN_DEBUG "%s: Shutting down ethercard, status was %2.2x.\n", | |
1372 | dev->name, (int)inl(ioaddr + INTSTAT)); | |
1373 | ||
1374 | del_timer_sync(&ep->timer); | |
1375 | ||
1376 | epic_disable_int(dev, ep); | |
1377 | ||
1378 | free_irq(dev->irq, dev); | |
1379 | ||
1380 | epic_pause(dev); | |
1381 | ||
1382 | /* Free all the skbuffs in the Rx queue. */ | |
1383 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1384 | skb = ep->rx_skbuff[i]; | |
1385 | ep->rx_skbuff[i] = NULL; | |
1386 | ep->rx_ring[i].rxstatus = 0; /* Not owned by Epic chip. */ | |
1387 | ep->rx_ring[i].buflength = 0; | |
1388 | if (skb) { | |
f3b197ac | 1389 | pci_unmap_single(ep->pci_dev, ep->rx_ring[i].bufaddr, |
1da177e4 LT |
1390 | ep->rx_buf_sz, PCI_DMA_FROMDEVICE); |
1391 | dev_kfree_skb(skb); | |
1392 | } | |
1393 | ep->rx_ring[i].bufaddr = 0xBADF00D0; /* An invalid address. */ | |
1394 | } | |
1395 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1396 | skb = ep->tx_skbuff[i]; | |
1397 | ep->tx_skbuff[i] = NULL; | |
1398 | if (!skb) | |
1399 | continue; | |
f3b197ac | 1400 | pci_unmap_single(ep->pci_dev, ep->tx_ring[i].bufaddr, |
1da177e4 LT |
1401 | skb->len, PCI_DMA_TODEVICE); |
1402 | dev_kfree_skb(skb); | |
1403 | } | |
1404 | ||
1405 | /* Green! Leave the chip in low-power mode. */ | |
1406 | outl(0x0008, ioaddr + GENCTL); | |
1407 | ||
1408 | return 0; | |
1409 | } | |
1410 | ||
1411 | static struct net_device_stats *epic_get_stats(struct net_device *dev) | |
1412 | { | |
1413 | struct epic_private *ep = dev->priv; | |
1414 | long ioaddr = dev->base_addr; | |
1415 | ||
1416 | if (netif_running(dev)) { | |
1417 | /* Update the error counts. */ | |
1418 | ep->stats.rx_missed_errors += inb(ioaddr + MPCNT); | |
1419 | ep->stats.rx_frame_errors += inb(ioaddr + ALICNT); | |
1420 | ep->stats.rx_crc_errors += inb(ioaddr + CRCCNT); | |
1421 | } | |
1422 | ||
1423 | return &ep->stats; | |
1424 | } | |
1425 | ||
1426 | /* Set or clear the multicast filter for this adaptor. | |
1427 | Note that we only use exclusion around actually queueing the | |
1428 | new frame, not around filling ep->setup_frame. This is non-deterministic | |
1429 | when re-entered but still correct. */ | |
1430 | ||
1431 | static void set_rx_mode(struct net_device *dev) | |
1432 | { | |
1433 | long ioaddr = dev->base_addr; | |
1434 | struct epic_private *ep = dev->priv; | |
1435 | unsigned char mc_filter[8]; /* Multicast hash filter */ | |
1436 | int i; | |
1437 | ||
1438 | if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ | |
1439 | outl(0x002C, ioaddr + RxCtrl); | |
1440 | /* Unconditionally log net taps. */ | |
1441 | printk(KERN_INFO "%s: Promiscuous mode enabled.\n", dev->name); | |
1442 | memset(mc_filter, 0xff, sizeof(mc_filter)); | |
1443 | } else if ((dev->mc_count > 0) || (dev->flags & IFF_ALLMULTI)) { | |
1444 | /* There is apparently a chip bug, so the multicast filter | |
1445 | is never enabled. */ | |
1446 | /* Too many to filter perfectly -- accept all multicasts. */ | |
1447 | memset(mc_filter, 0xff, sizeof(mc_filter)); | |
1448 | outl(0x000C, ioaddr + RxCtrl); | |
1449 | } else if (dev->mc_count == 0) { | |
1450 | outl(0x0004, ioaddr + RxCtrl); | |
1451 | return; | |
1452 | } else { /* Never executed, for now. */ | |
1453 | struct dev_mc_list *mclist; | |
1454 | ||
1455 | memset(mc_filter, 0, sizeof(mc_filter)); | |
1456 | for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; | |
1457 | i++, mclist = mclist->next) { | |
1458 | unsigned int bit_nr = | |
1459 | ether_crc_le(ETH_ALEN, mclist->dmi_addr) & 0x3f; | |
1460 | mc_filter[bit_nr >> 3] |= (1 << bit_nr); | |
1461 | } | |
1462 | } | |
1463 | /* ToDo: perhaps we need to stop the Tx and Rx process here? */ | |
1464 | if (memcmp(mc_filter, ep->mc_filter, sizeof(mc_filter))) { | |
1465 | for (i = 0; i < 4; i++) | |
1466 | outw(((u16 *)mc_filter)[i], ioaddr + MC0 + i*4); | |
1467 | memcpy(ep->mc_filter, mc_filter, sizeof(mc_filter)); | |
1468 | } | |
1469 | return; | |
1470 | } | |
1471 | ||
1472 | static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) | |
1473 | { | |
1474 | struct epic_private *np = dev->priv; | |
1475 | ||
1476 | strcpy (info->driver, DRV_NAME); | |
1477 | strcpy (info->version, DRV_VERSION); | |
1478 | strcpy (info->bus_info, pci_name(np->pci_dev)); | |
1479 | } | |
1480 | ||
1481 | static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1482 | { | |
1483 | struct epic_private *np = dev->priv; | |
1484 | int rc; | |
1485 | ||
1486 | spin_lock_irq(&np->lock); | |
1487 | rc = mii_ethtool_gset(&np->mii, cmd); | |
1488 | spin_unlock_irq(&np->lock); | |
1489 | ||
1490 | return rc; | |
1491 | } | |
1492 | ||
1493 | static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1494 | { | |
1495 | struct epic_private *np = dev->priv; | |
1496 | int rc; | |
1497 | ||
1498 | spin_lock_irq(&np->lock); | |
1499 | rc = mii_ethtool_sset(&np->mii, cmd); | |
1500 | spin_unlock_irq(&np->lock); | |
1501 | ||
1502 | return rc; | |
1503 | } | |
1504 | ||
1505 | static int netdev_nway_reset(struct net_device *dev) | |
1506 | { | |
1507 | struct epic_private *np = dev->priv; | |
1508 | return mii_nway_restart(&np->mii); | |
1509 | } | |
1510 | ||
1511 | static u32 netdev_get_link(struct net_device *dev) | |
1512 | { | |
1513 | struct epic_private *np = dev->priv; | |
1514 | return mii_link_ok(&np->mii); | |
1515 | } | |
1516 | ||
1517 | static u32 netdev_get_msglevel(struct net_device *dev) | |
1518 | { | |
1519 | return debug; | |
1520 | } | |
1521 | ||
1522 | static void netdev_set_msglevel(struct net_device *dev, u32 value) | |
1523 | { | |
1524 | debug = value; | |
1525 | } | |
1526 | ||
1527 | static int ethtool_begin(struct net_device *dev) | |
1528 | { | |
1529 | unsigned long ioaddr = dev->base_addr; | |
1530 | /* power-up, if interface is down */ | |
1531 | if (! netif_running(dev)) { | |
1532 | outl(0x0200, ioaddr + GENCTL); | |
1533 | outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); | |
1534 | } | |
1535 | return 0; | |
1536 | } | |
1537 | ||
1538 | static void ethtool_complete(struct net_device *dev) | |
1539 | { | |
1540 | unsigned long ioaddr = dev->base_addr; | |
1541 | /* power-down, if interface is down */ | |
1542 | if (! netif_running(dev)) { | |
1543 | outl(0x0008, ioaddr + GENCTL); | |
1544 | outl((inl(ioaddr + NVCTL) & ~0x483C) | 0x0000, ioaddr + NVCTL); | |
1545 | } | |
1546 | } | |
1547 | ||
1548 | static struct ethtool_ops netdev_ethtool_ops = { | |
1549 | .get_drvinfo = netdev_get_drvinfo, | |
1550 | .get_settings = netdev_get_settings, | |
1551 | .set_settings = netdev_set_settings, | |
1552 | .nway_reset = netdev_nway_reset, | |
1553 | .get_link = netdev_get_link, | |
1554 | .get_msglevel = netdev_get_msglevel, | |
1555 | .set_msglevel = netdev_set_msglevel, | |
1556 | .get_sg = ethtool_op_get_sg, | |
1557 | .get_tx_csum = ethtool_op_get_tx_csum, | |
1558 | .begin = ethtool_begin, | |
1559 | .complete = ethtool_complete | |
1560 | }; | |
1561 | ||
1562 | static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1563 | { | |
1564 | struct epic_private *np = dev->priv; | |
1565 | long ioaddr = dev->base_addr; | |
1566 | struct mii_ioctl_data *data = if_mii(rq); | |
1567 | int rc; | |
1568 | ||
1569 | /* power-up, if interface is down */ | |
1570 | if (! netif_running(dev)) { | |
1571 | outl(0x0200, ioaddr + GENCTL); | |
1572 | outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); | |
1573 | } | |
1574 | ||
1575 | /* all non-ethtool ioctls (the SIOC[GS]MIIxxx ioctls) */ | |
1576 | spin_lock_irq(&np->lock); | |
1577 | rc = generic_mii_ioctl(&np->mii, data, cmd, NULL); | |
1578 | spin_unlock_irq(&np->lock); | |
1579 | ||
1580 | /* power-down, if interface is down */ | |
1581 | if (! netif_running(dev)) { | |
1582 | outl(0x0008, ioaddr + GENCTL); | |
1583 | outl((inl(ioaddr + NVCTL) & ~0x483C) | 0x0000, ioaddr + NVCTL); | |
1584 | } | |
1585 | return rc; | |
1586 | } | |
1587 | ||
1588 | ||
1589 | static void __devexit epic_remove_one (struct pci_dev *pdev) | |
1590 | { | |
1591 | struct net_device *dev = pci_get_drvdata(pdev); | |
1592 | struct epic_private *ep = dev->priv; | |
f3b197ac | 1593 | |
1da177e4 LT |
1594 | pci_free_consistent(pdev, TX_TOTAL_SIZE, ep->tx_ring, ep->tx_ring_dma); |
1595 | pci_free_consistent(pdev, RX_TOTAL_SIZE, ep->rx_ring, ep->rx_ring_dma); | |
1596 | unregister_netdev(dev); | |
1597 | #ifndef USE_IO_OPS | |
1598 | iounmap((void*) dev->base_addr); | |
1599 | #endif | |
1600 | pci_release_regions(pdev); | |
1601 | free_netdev(dev); | |
1602 | pci_disable_device(pdev); | |
1603 | pci_set_drvdata(pdev, NULL); | |
1604 | /* pci_power_off(pdev, -1); */ | |
1605 | } | |
1606 | ||
1607 | ||
1608 | #ifdef CONFIG_PM | |
1609 | ||
1610 | static int epic_suspend (struct pci_dev *pdev, pm_message_t state) | |
1611 | { | |
1612 | struct net_device *dev = pci_get_drvdata(pdev); | |
1613 | long ioaddr = dev->base_addr; | |
1614 | ||
1615 | if (!netif_running(dev)) | |
1616 | return 0; | |
1617 | epic_pause(dev); | |
1618 | /* Put the chip into low-power mode. */ | |
1619 | outl(0x0008, ioaddr + GENCTL); | |
1620 | /* pci_power_off(pdev, -1); */ | |
1621 | return 0; | |
1622 | } | |
1623 | ||
1624 | ||
1625 | static int epic_resume (struct pci_dev *pdev) | |
1626 | { | |
1627 | struct net_device *dev = pci_get_drvdata(pdev); | |
1628 | ||
1629 | if (!netif_running(dev)) | |
1630 | return 0; | |
1631 | epic_restart(dev); | |
1632 | /* pci_power_on(pdev); */ | |
1633 | return 0; | |
1634 | } | |
1635 | ||
1636 | #endif /* CONFIG_PM */ | |
1637 | ||
1638 | ||
1639 | static struct pci_driver epic_driver = { | |
1640 | .name = DRV_NAME, | |
1641 | .id_table = epic_pci_tbl, | |
1642 | .probe = epic_init_one, | |
1643 | .remove = __devexit_p(epic_remove_one), | |
1644 | #ifdef CONFIG_PM | |
1645 | .suspend = epic_suspend, | |
1646 | .resume = epic_resume, | |
1647 | #endif /* CONFIG_PM */ | |
1648 | }; | |
1649 | ||
1650 | ||
1651 | static int __init epic_init (void) | |
1652 | { | |
1653 | /* when a module, this is printed whether or not devices are found in probe */ | |
1654 | #ifdef MODULE | |
1655 | printk (KERN_INFO "%s" KERN_INFO "%s" KERN_INFO "%s", | |
1656 | version, version2, version3); | |
1657 | #endif | |
1658 | ||
1659 | return pci_module_init (&epic_driver); | |
1660 | } | |
1661 | ||
1662 | ||
1663 | static void __exit epic_cleanup (void) | |
1664 | { | |
1665 | pci_unregister_driver (&epic_driver); | |
1666 | } | |
1667 | ||
1668 | ||
1669 | module_init(epic_init); | |
1670 | module_exit(epic_cleanup); |