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[ARM] Support register switch in nommu mode
[linux-2.6/verdex.git] / drivers / net / tulip / uli526x.c
blob9839816668007223ebcb98dd21f7e50747542272
1 /*
2 This program is free software; you can redistribute it and/or
3 modify it under the terms of the GNU General Public License
4 as published by the Free Software Foundation; either version 2
5 of the License, or (at your option) any later version.
6
7 This program is distributed in the hope that it will be useful,
8 but WITHOUT ANY WARRANTY; without even the implied warranty of
9 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 GNU General Public License for more details.
11
12
13 */
14
15 #define DRV_NAME "uli526x"
16 #define DRV_VERSION "0.9.3"
17 #define DRV_RELDATE "2005-7-29"
18
19 #include <linux/module.h>
20
21 #include <linux/kernel.h>
22 #include <linux/string.h>
23 #include <linux/timer.h>
24 #include <linux/errno.h>
25 #include <linux/ioport.h>
26 #include <linux/slab.h>
27 #include <linux/interrupt.h>
28 #include <linux/pci.h>
29 #include <linux/init.h>
30 #include <linux/netdevice.h>
31 #include <linux/etherdevice.h>
32 #include <linux/ethtool.h>
33 #include <linux/skbuff.h>
34 #include <linux/delay.h>
35 #include <linux/spinlock.h>
36 #include <linux/dma-mapping.h>
37
38 #include <asm/processor.h>
39 #include <asm/bitops.h>
40 #include <asm/io.h>
41 #include <asm/dma.h>
42 #include <asm/uaccess.h>
43
44
45 /* Board/System/Debug information/definition ---------------- */
46 #define PCI_ULI5261_ID 0x526110B9 /* ULi M5261 ID*/
47 #define PCI_ULI5263_ID 0x526310B9 /* ULi M5263 ID*/
48
49 #define ULI526X_IO_SIZE 0x100
50 #define TX_DESC_CNT 0x20 /* Allocated Tx descriptors */
51 #define RX_DESC_CNT 0x30 /* Allocated Rx descriptors */
52 #define TX_FREE_DESC_CNT (TX_DESC_CNT - 2) /* Max TX packet count */
53 #define TX_WAKE_DESC_CNT (TX_DESC_CNT - 3) /* TX wakeup count */
54 #define DESC_ALL_CNT (TX_DESC_CNT + RX_DESC_CNT)
55 #define TX_BUF_ALLOC 0x600
56 #define RX_ALLOC_SIZE 0x620
57 #define ULI526X_RESET 1
58 #define CR0_DEFAULT 0
59 #define CR6_DEFAULT 0x22200000
60 #define CR7_DEFAULT 0x180c1
61 #define CR15_DEFAULT 0x06 /* TxJabber RxWatchdog */
62 #define TDES0_ERR_MASK 0x4302 /* TXJT, LC, EC, FUE */
63 #define MAX_PACKET_SIZE 1514
64 #define ULI5261_MAX_MULTICAST 14
65 #define RX_COPY_SIZE 100
66 #define MAX_CHECK_PACKET 0x8000
67
68 #define ULI526X_10MHF 0
69 #define ULI526X_100MHF 1
70 #define ULI526X_10MFD 4
71 #define ULI526X_100MFD 5
72 #define ULI526X_AUTO 8
73
74 #define ULI526X_TXTH_72 0x400000 /* TX TH 72 byte */
75 #define ULI526X_TXTH_96 0x404000 /* TX TH 96 byte */
76 #define ULI526X_TXTH_128 0x0000 /* TX TH 128 byte */
77 #define ULI526X_TXTH_256 0x4000 /* TX TH 256 byte */
78 #define ULI526X_TXTH_512 0x8000 /* TX TH 512 byte */
79 #define ULI526X_TXTH_1K 0xC000 /* TX TH 1K byte */
80
81 #define ULI526X_TIMER_WUT (jiffies + HZ * 1)/* timer wakeup time : 1 second */
82 #define ULI526X_TX_TIMEOUT ((16*HZ)/2) /* tx packet time-out time 8 s" */
83 #define ULI526X_TX_KICK (4*HZ/2) /* tx packet Kick-out time 2 s" */
84
85 #define ULI526X_DBUG(dbug_now, msg, value) if (uli526x_debug || (dbug_now)) printk(KERN_ERR DRV_NAME ": %s %lx\n", (msg), (long) (value))
86
87 #define SHOW_MEDIA_TYPE(mode) printk(KERN_ERR DRV_NAME ": Change Speed to %sMhz %s duplex\n",mode & 1 ?"100":"10", mode & 4 ? "full":"half");
88
89
90 /* CR9 definition: SROM/MII */
91 #define CR9_SROM_READ 0x4800
92 #define CR9_SRCS 0x1
93 #define CR9_SRCLK 0x2
94 #define CR9_CRDOUT 0x8
95 #define SROM_DATA_0 0x0
96 #define SROM_DATA_1 0x4
97 #define PHY_DATA_1 0x20000
98 #define PHY_DATA_0 0x00000
99 #define MDCLKH 0x10000
100
101 #define PHY_POWER_DOWN 0x800
102
103 #define SROM_V41_CODE 0x14
104
105 #define SROM_CLK_WRITE(data, ioaddr) \
106 outl(data|CR9_SROM_READ|CR9_SRCS,ioaddr); \
107 udelay(5); \
108 outl(data|CR9_SROM_READ|CR9_SRCS|CR9_SRCLK,ioaddr); \
109 udelay(5); \
110 outl(data|CR9_SROM_READ|CR9_SRCS,ioaddr); \
111 udelay(5);
112
113 /* Structure/enum declaration ------------------------------- */
114 struct tx_desc {
115 u32 tdes0, tdes1, tdes2, tdes3; /* Data for the card */
116 char *tx_buf_ptr; /* Data for us */
117 struct tx_desc *next_tx_desc;
118 } __attribute__(( aligned(32) ));
119
120 struct rx_desc {
121 u32 rdes0, rdes1, rdes2, rdes3; /* Data for the card */
122 struct sk_buff *rx_skb_ptr; /* Data for us */
123 struct rx_desc *next_rx_desc;
124 } __attribute__(( aligned(32) ));
125
126 struct uli526x_board_info {
127 u32 chip_id; /* Chip vendor/Device ID */
128 struct net_device *next_dev; /* next device */
129 struct pci_dev *pdev; /* PCI device */
130 spinlock_t lock;
131
132 long ioaddr; /* I/O base address */
133 u32 cr0_data;
134 u32 cr5_data;
135 u32 cr6_data;
136 u32 cr7_data;
137 u32 cr15_data;
138
139 /* pointer for memory physical address */
140 dma_addr_t buf_pool_dma_ptr; /* Tx buffer pool memory */
141 dma_addr_t buf_pool_dma_start; /* Tx buffer pool align dword */
142 dma_addr_t desc_pool_dma_ptr; /* descriptor pool memory */
143 dma_addr_t first_tx_desc_dma;
144 dma_addr_t first_rx_desc_dma;
145
146 /* descriptor pointer */
147 unsigned char *buf_pool_ptr; /* Tx buffer pool memory */
148 unsigned char *buf_pool_start; /* Tx buffer pool align dword */
149 unsigned char *desc_pool_ptr; /* descriptor pool memory */
150 struct tx_desc *first_tx_desc;
151 struct tx_desc *tx_insert_ptr;
152 struct tx_desc *tx_remove_ptr;
153 struct rx_desc *first_rx_desc;
154 struct rx_desc *rx_insert_ptr;
155 struct rx_desc *rx_ready_ptr; /* packet come pointer */
156 unsigned long tx_packet_cnt; /* transmitted packet count */
157 unsigned long rx_avail_cnt; /* available rx descriptor count */
158 unsigned long interval_rx_cnt; /* rx packet count a callback time */
159
160 u16 dbug_cnt;
161 u16 NIC_capability; /* NIC media capability */
162 u16 PHY_reg4; /* Saved Phyxcer register 4 value */
163
164 u8 media_mode; /* user specify media mode */
165 u8 op_mode; /* real work media mode */
166 u8 phy_addr;
167 u8 link_failed; /* Ever link failed */
168 u8 wait_reset; /* Hardware failed, need to reset */
169 struct timer_list timer;
170
171 /* System defined statistic counter */
172 struct net_device_stats stats;
173
174 /* Driver defined statistic counter */
175 unsigned long tx_fifo_underrun;
176 unsigned long tx_loss_carrier;
177 unsigned long tx_no_carrier;
178 unsigned long tx_late_collision;
179 unsigned long tx_excessive_collision;
180 unsigned long tx_jabber_timeout;
181 unsigned long reset_count;
182 unsigned long reset_cr8;
183 unsigned long reset_fatal;
184 unsigned long reset_TXtimeout;
185
186 /* NIC SROM data */
187 unsigned char srom[128];
188 u8 init;
189 };
190
191 enum uli526x_offsets {
192 DCR0 = 0x00, DCR1 = 0x08, DCR2 = 0x10, DCR3 = 0x18, DCR4 = 0x20,
193 DCR5 = 0x28, DCR6 = 0x30, DCR7 = 0x38, DCR8 = 0x40, DCR9 = 0x48,
194 DCR10 = 0x50, DCR11 = 0x58, DCR12 = 0x60, DCR13 = 0x68, DCR14 = 0x70,
195 DCR15 = 0x78
196 };
197
198 enum uli526x_CR6_bits {
199 CR6_RXSC = 0x2, CR6_PBF = 0x8, CR6_PM = 0x40, CR6_PAM = 0x80,
200 CR6_FDM = 0x200, CR6_TXSC = 0x2000, CR6_STI = 0x100000,
201 CR6_SFT = 0x200000, CR6_RXA = 0x40000000, CR6_NO_PURGE = 0x20000000
202 };
203
204 /* Global variable declaration ----------------------------- */
205 static int __devinitdata printed_version;
206 static char version[] __devinitdata =
207 KERN_INFO DRV_NAME ": ULi M5261/M5263 net driver, version "
208 DRV_VERSION " (" DRV_RELDATE ")\n";
209
210 static int uli526x_debug;
211 static unsigned char uli526x_media_mode = ULI526X_AUTO;
212 static u32 uli526x_cr6_user_set;
213
214 /* For module input parameter */
215 static int debug;
216 static u32 cr6set;
217 static unsigned char mode = 8;
218
219 /* function declaration ------------------------------------- */
220 static int uli526x_open(struct net_device *);
221 static int uli526x_start_xmit(struct sk_buff *, struct net_device *);
222 static int uli526x_stop(struct net_device *);
223 static struct net_device_stats * uli526x_get_stats(struct net_device *);
224 static void uli526x_set_filter_mode(struct net_device *);
225 static struct ethtool_ops netdev_ethtool_ops;
226 static u16 read_srom_word(long, int);
227 static irqreturn_t uli526x_interrupt(int, void *, struct pt_regs *);
228 static void uli526x_descriptor_init(struct uli526x_board_info *, unsigned long);
229 static void allocate_rx_buffer(struct uli526x_board_info *);
230 static void update_cr6(u32, unsigned long);
231 static void send_filter_frame(struct net_device *, int);
232 static u16 phy_read(unsigned long, u8, u8, u32);
233 static u16 phy_readby_cr10(unsigned long, u8, u8);
234 static void phy_write(unsigned long, u8, u8, u16, u32);
235 static void phy_writeby_cr10(unsigned long, u8, u8, u16);
236 static void phy_write_1bit(unsigned long, u32, u32);
237 static u16 phy_read_1bit(unsigned long, u32);
238 static u8 uli526x_sense_speed(struct uli526x_board_info *);
239 static void uli526x_process_mode(struct uli526x_board_info *);
240 static void uli526x_timer(unsigned long);
241 static void uli526x_rx_packet(struct net_device *, struct uli526x_board_info *);
242 static void uli526x_free_tx_pkt(struct net_device *, struct uli526x_board_info *);
243 static void uli526x_reuse_skb(struct uli526x_board_info *, struct sk_buff *);
244 static void uli526x_dynamic_reset(struct net_device *);
245 static void uli526x_free_rxbuffer(struct uli526x_board_info *);
246 static void uli526x_init(struct net_device *);
247 static void uli526x_set_phyxcer(struct uli526x_board_info *);
248
249 /* ULI526X network board routine ---------------------------- */
250
251 /*
252 * Search ULI526X board, allocate space and register it
253 */
254
255 static int __devinit uli526x_init_one (struct pci_dev *pdev,
256 const struct pci_device_id *ent)
257 {
258 struct uli526x_board_info *db; /* board information structure */
259 struct net_device *dev;
260 int i, err;
261
262 ULI526X_DBUG(0, "uli526x_init_one()", 0);
263
264 if (!printed_version++)
265 printk(version);
266
267 /* Init network device */
268 dev = alloc_etherdev(sizeof(*db));
269 if (dev == NULL)
270 return -ENOMEM;
271 SET_MODULE_OWNER(dev);
272 SET_NETDEV_DEV(dev, &pdev->dev);
273
274 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
275 printk(KERN_WARNING DRV_NAME ": 32-bit PCI DMA not available.\n");
276 err = -ENODEV;
277 goto err_out_free;
278 }
279
280 /* Enable Master/IO access, Disable memory access */
281 err = pci_enable_device(pdev);
282 if (err)
283 goto err_out_free;
284
285 if (!pci_resource_start(pdev, 0)) {
286 printk(KERN_ERR DRV_NAME ": I/O base is zero\n");
287 err = -ENODEV;
288 goto err_out_disable;
289 }
290
291 if (pci_resource_len(pdev, 0) < (ULI526X_IO_SIZE) ) {
292 printk(KERN_ERR DRV_NAME ": Allocated I/O size too small\n");
293 err = -ENODEV;
294 goto err_out_disable;
295 }
296
297 if (pci_request_regions(pdev, DRV_NAME)) {
298 printk(KERN_ERR DRV_NAME ": Failed to request PCI regions\n");
299 err = -ENODEV;
300 goto err_out_disable;
301 }
302
303 /* Init system & device */
304 db = netdev_priv(dev);
305
306 /* Allocate Tx/Rx descriptor memory */
307 db->desc_pool_ptr = pci_alloc_consistent(pdev, sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20, &db->desc_pool_dma_ptr);
308 if(db->desc_pool_ptr == NULL)
309 {
310 err = -ENOMEM;
311 goto err_out_nomem;
312 }
313 db->buf_pool_ptr = pci_alloc_consistent(pdev, TX_BUF_ALLOC * TX_DESC_CNT + 4, &db->buf_pool_dma_ptr);
314 if(db->buf_pool_ptr == NULL)
315 {
316 err = -ENOMEM;
317 goto err_out_nomem;
318 }
319
320 db->first_tx_desc = (struct tx_desc *) db->desc_pool_ptr;
321 db->first_tx_desc_dma = db->desc_pool_dma_ptr;
322 db->buf_pool_start = db->buf_pool_ptr;
323 db->buf_pool_dma_start = db->buf_pool_dma_ptr;
324
325 db->chip_id = ent->driver_data;
326 db->ioaddr = pci_resource_start(pdev, 0);
327
328 db->pdev = pdev;
329 db->init = 1;
330
331 dev->base_addr = db->ioaddr;
332 dev->irq = pdev->irq;
333 pci_set_drvdata(pdev, dev);
334
335 /* Register some necessary functions */
336 dev->open = &uli526x_open;
337 dev->hard_start_xmit = &uli526x_start_xmit;
338 dev->stop = &uli526x_stop;
339 dev->get_stats = &uli526x_get_stats;
340 dev->set_multicast_list = &uli526x_set_filter_mode;
341 dev->ethtool_ops = &netdev_ethtool_ops;
342 spin_lock_init(&db->lock);
343
344
345 /* read 64 word srom data */
346 for (i = 0; i < 64; i++)
347 ((u16 *) db->srom)[i] = cpu_to_le16(read_srom_word(db->ioaddr, i));
348
349 /* Set Node address */
350 if(((u16 *) db->srom)[0] == 0xffff || ((u16 *) db->srom)[0] == 0) /* SROM absent, so read MAC address from ID Table */
351 {
352 outl(0x10000, db->ioaddr + DCR0); //Diagnosis mode
353 outl(0x1c0, db->ioaddr + DCR13); //Reset dianostic pointer port
354 outl(0, db->ioaddr + DCR14); //Clear reset port
355 outl(0x10, db->ioaddr + DCR14); //Reset ID Table pointer
356 outl(0, db->ioaddr + DCR14); //Clear reset port
357 outl(0, db->ioaddr + DCR13); //Clear CR13
358 outl(0x1b0, db->ioaddr + DCR13); //Select ID Table access port
359 //Read MAC address from CR14
360 for (i = 0; i < 6; i++)
361 dev->dev_addr[i] = inl(db->ioaddr + DCR14);
362 //Read end
363 outl(0, db->ioaddr + DCR13); //Clear CR13
364 outl(0, db->ioaddr + DCR0); //Clear CR0
365 udelay(10);
366 }
367 else /*Exist SROM*/
368 {
369 for (i = 0; i < 6; i++)
370 dev->dev_addr[i] = db->srom[20 + i];
371 }
372 err = register_netdev (dev);
373 if (err)
374 goto err_out_res;
375
376 printk(KERN_INFO "%s: ULi M%04lx at pci%s,",dev->name,ent->driver_data >> 16,pci_name(pdev));
377
378 for (i = 0; i < 6; i++)
379 printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]);
380 printk(", irq %d.\n", dev->irq);
381
382 pci_set_master(pdev);
383
384 return 0;
385
386 err_out_res:
387 pci_release_regions(pdev);
388 err_out_nomem:
389 if(db->desc_pool_ptr)
390 pci_free_consistent(pdev, sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20,
391 db->desc_pool_ptr, db->desc_pool_dma_ptr);
392
393 if(db->buf_pool_ptr != NULL)
394 pci_free_consistent(pdev, TX_BUF_ALLOC * TX_DESC_CNT + 4,
395 db->buf_pool_ptr, db->buf_pool_dma_ptr);
396 err_out_disable:
397 pci_disable_device(pdev);
398 err_out_free:
399 pci_set_drvdata(pdev, NULL);
400 free_netdev(dev);
401
402 return err;
403 }
404
405
406 static void __devexit uli526x_remove_one (struct pci_dev *pdev)
407 {
408 struct net_device *dev = pci_get_drvdata(pdev);
409 struct uli526x_board_info *db = netdev_priv(dev);
410
411 ULI526X_DBUG(0, "uli526x_remove_one()", 0);
412
413 pci_free_consistent(db->pdev, sizeof(struct tx_desc) *
414 DESC_ALL_CNT + 0x20, db->desc_pool_ptr,
415 db->desc_pool_dma_ptr);
416 pci_free_consistent(db->pdev, TX_BUF_ALLOC * TX_DESC_CNT + 4,
417 db->buf_pool_ptr, db->buf_pool_dma_ptr);
418 unregister_netdev(dev);
419 pci_release_regions(pdev);
420 free_netdev(dev); /* free board information */
421 pci_set_drvdata(pdev, NULL);
422 pci_disable_device(pdev);
423 ULI526X_DBUG(0, "uli526x_remove_one() exit", 0);
424 }
425
426
427 /*
428 * Open the interface.
429 * The interface is opened whenever "ifconfig" activates it.
430 */
431
432 static int uli526x_open(struct net_device *dev)
433 {
434 int ret;
435 struct uli526x_board_info *db = netdev_priv(dev);
436
437 ULI526X_DBUG(0, "uli526x_open", 0);
438
439 ret = request_irq(dev->irq, &uli526x_interrupt, SA_SHIRQ, dev->name, dev);
440 if (ret)
441 return ret;
442
443 /* system variable init */
444 db->cr6_data = CR6_DEFAULT | uli526x_cr6_user_set;
445 db->tx_packet_cnt = 0;
446 db->rx_avail_cnt = 0;
447 db->link_failed = 1;
448 netif_carrier_off(dev);
449 db->wait_reset = 0;
450
451 db->NIC_capability = 0xf; /* All capability*/
452 db->PHY_reg4 = 0x1e0;
453
454 /* CR6 operation mode decision */
455 db->cr6_data |= ULI526X_TXTH_256;
456 db->cr0_data = CR0_DEFAULT;
457
458 /* Initialize ULI526X board */
459 uli526x_init(dev);
460
461 /* Active System Interface */
462 netif_wake_queue(dev);
463
464 /* set and active a timer process */
465 init_timer(&db->timer);
466 db->timer.expires = ULI526X_TIMER_WUT + HZ * 2;
467 db->timer.data = (unsigned long)dev;
468 db->timer.function = &uli526x_timer;
469 add_timer(&db->timer);
470
471 return 0;
472 }
473
474
475 /* Initialize ULI526X board
476 * Reset ULI526X board
477 * Initialize TX/Rx descriptor chain structure
478 * Send the set-up frame
479 * Enable Tx/Rx machine
480 */
481
482 static void uli526x_init(struct net_device *dev)
483 {
484 struct uli526x_board_info *db = netdev_priv(dev);
485 unsigned long ioaddr = db->ioaddr;
486 u8 phy_tmp;
487 u16 phy_value;
488 u16 phy_reg_reset;
489
490 ULI526X_DBUG(0, "uli526x_init()", 0);
491
492 /* Reset M526x MAC controller */
493 outl(ULI526X_RESET, ioaddr + DCR0); /* RESET MAC */
494 udelay(100);
495 outl(db->cr0_data, ioaddr + DCR0);
496 udelay(5);
497
498 /* Phy addr : In some boards,M5261/M5263 phy address != 1 */
499 db->phy_addr = 1;
500 for(phy_tmp=0;phy_tmp<32;phy_tmp++)
501 {
502 phy_value=phy_read(db->ioaddr,phy_tmp,3,db->chip_id);//peer add
503 if(phy_value != 0xffff&&phy_value!=0)
504 {
505 db->phy_addr = phy_tmp;
506 break;
507 }
508 }
509 if(phy_tmp == 32)
510 printk(KERN_WARNING "Can not find the phy address!!!");
511 /* Parser SROM and media mode */
512 db->media_mode = uli526x_media_mode;
513
514 /* Phyxcer capability setting */
515 phy_reg_reset = phy_read(db->ioaddr, db->phy_addr, 0, db->chip_id);
516 phy_reg_reset = (phy_reg_reset | 0x8000);
517 phy_write(db->ioaddr, db->phy_addr, 0, phy_reg_reset, db->chip_id);
518 udelay(500);
519
520 /* Process Phyxcer Media Mode */
521 uli526x_set_phyxcer(db);
522
523 /* Media Mode Process */
524 if ( !(db->media_mode & ULI526X_AUTO) )
525 db->op_mode = db->media_mode; /* Force Mode */
526
527 /* Initialize Transmit/Receive decriptor and CR3/4 */
528 uli526x_descriptor_init(db, ioaddr);
529
530 /* Init CR6 to program M526X operation */
531 update_cr6(db->cr6_data, ioaddr);
532
533 /* Send setup frame */
534 send_filter_frame(dev, dev->mc_count); /* M5261/M5263 */
535
536 /* Init CR7, interrupt active bit */
537 db->cr7_data = CR7_DEFAULT;
538 outl(db->cr7_data, ioaddr + DCR7);
539
540 /* Init CR15, Tx jabber and Rx watchdog timer */
541 outl(db->cr15_data, ioaddr + DCR15);
542
543 /* Enable ULI526X Tx/Rx function */
544 db->cr6_data |= CR6_RXSC | CR6_TXSC;
545 update_cr6(db->cr6_data, ioaddr);
546 }
547
548
549 /*
550 * Hardware start transmission.
551 * Send a packet to media from the upper layer.
552 */
553
554 static int uli526x_start_xmit(struct sk_buff *skb, struct net_device *dev)
555 {
556 struct uli526x_board_info *db = netdev_priv(dev);
557 struct tx_desc *txptr;
558 unsigned long flags;
559
560 ULI526X_DBUG(0, "uli526x_start_xmit", 0);
561
562 /* Resource flag check */
563 netif_stop_queue(dev);
564
565 /* Too large packet check */
566 if (skb->len > MAX_PACKET_SIZE) {
567 printk(KERN_ERR DRV_NAME ": big packet = %d\n", (u16)skb->len);
568 dev_kfree_skb(skb);
569 return 0;
570 }
571
572 spin_lock_irqsave(&db->lock, flags);
573
574 /* No Tx resource check, it never happen nromally */
575 if (db->tx_packet_cnt >= TX_FREE_DESC_CNT) {
576 spin_unlock_irqrestore(&db->lock, flags);
577 printk(KERN_ERR DRV_NAME ": No Tx resource %ld\n", db->tx_packet_cnt);
578 return 1;
579 }
580
581 /* Disable NIC interrupt */
582 outl(0, dev->base_addr + DCR7);
583
584 /* transmit this packet */
585 txptr = db->tx_insert_ptr;
586 memcpy(txptr->tx_buf_ptr, skb->data, skb->len);
587 txptr->tdes1 = cpu_to_le32(0xe1000000 | skb->len);
588
589 /* Point to next transmit free descriptor */
590 db->tx_insert_ptr = txptr->next_tx_desc;
591
592 /* Transmit Packet Process */
593 if ( (db->tx_packet_cnt < TX_DESC_CNT) ) {
594 txptr->tdes0 = cpu_to_le32(0x80000000); /* Set owner bit */
595 db->tx_packet_cnt++; /* Ready to send */
596 outl(0x1, dev->base_addr + DCR1); /* Issue Tx polling */
597 dev->trans_start = jiffies; /* saved time stamp */
598 }
599
600 /* Tx resource check */
601 if ( db->tx_packet_cnt < TX_FREE_DESC_CNT )
602 netif_wake_queue(dev);
603
604 /* Restore CR7 to enable interrupt */
605 spin_unlock_irqrestore(&db->lock, flags);
606 outl(db->cr7_data, dev->base_addr + DCR7);
607
608 /* free this SKB */
609 dev_kfree_skb(skb);
610
611 return 0;
612 }
613
614
615 /*
616 * Stop the interface.
617 * The interface is stopped when it is brought.
618 */
619
620 static int uli526x_stop(struct net_device *dev)
621 {
622 struct uli526x_board_info *db = netdev_priv(dev);
623 unsigned long ioaddr = dev->base_addr;
624
625 ULI526X_DBUG(0, "uli526x_stop", 0);
626
627 /* disable system */
628 netif_stop_queue(dev);
629
630 /* deleted timer */
631 del_timer_sync(&db->timer);
632
633 /* Reset & stop ULI526X board */
634 outl(ULI526X_RESET, ioaddr + DCR0);
635 udelay(5);
636 phy_write(db->ioaddr, db->phy_addr, 0, 0x8000, db->chip_id);
637
638 /* free interrupt */
639 free_irq(dev->irq, dev);
640
641 /* free allocated rx buffer */
642 uli526x_free_rxbuffer(db);
643
644 #if 0
645 /* show statistic counter */
646 printk(DRV_NAME ": FU:%lx EC:%lx LC:%lx NC:%lx LOC:%lx TXJT:%lx RESET:%lx RCR8:%lx FAL:%lx TT:%lx\n",
647 db->tx_fifo_underrun, db->tx_excessive_collision,
648 db->tx_late_collision, db->tx_no_carrier, db->tx_loss_carrier,
649 db->tx_jabber_timeout, db->reset_count, db->reset_cr8,
650 db->reset_fatal, db->reset_TXtimeout);
651 #endif
652
653 return 0;
654 }
655
656
657 /*
658 * M5261/M5263 insterrupt handler
659 * receive the packet to upper layer, free the transmitted packet
660 */
661
662 static irqreturn_t uli526x_interrupt(int irq, void *dev_id, struct pt_regs *regs)
663 {
664 struct net_device *dev = dev_id;
665 struct uli526x_board_info *db = netdev_priv(dev);
666 unsigned long ioaddr = dev->base_addr;
667 unsigned long flags;
668
669 if (!dev) {
670 ULI526X_DBUG(1, "uli526x_interrupt() without DEVICE arg", 0);
671 return IRQ_NONE;
672 }
673
674 spin_lock_irqsave(&db->lock, flags);
675 outl(0, ioaddr + DCR7);
676
677 /* Got ULI526X status */
678 db->cr5_data = inl(ioaddr + DCR5);
679 outl(db->cr5_data, ioaddr + DCR5);
680 if ( !(db->cr5_data & 0x180c1) ) {
681 spin_unlock_irqrestore(&db->lock, flags);
682 outl(db->cr7_data, ioaddr + DCR7);
683 return IRQ_HANDLED;
684 }
685
686 /* Check system status */
687 if (db->cr5_data & 0x2000) {
688 /* system bus error happen */
689 ULI526X_DBUG(1, "System bus error happen. CR5=", db->cr5_data);
690 db->reset_fatal++;
691 db->wait_reset = 1; /* Need to RESET */
692 spin_unlock_irqrestore(&db->lock, flags);
693 return IRQ_HANDLED;
694 }
695
696 /* Received the coming packet */
697 if ( (db->cr5_data & 0x40) && db->rx_avail_cnt )
698 uli526x_rx_packet(dev, db);
699
700 /* reallocate rx descriptor buffer */
701 if (db->rx_avail_cnt<RX_DESC_CNT)
702 allocate_rx_buffer(db);
703
704 /* Free the transmitted descriptor */
705 if ( db->cr5_data & 0x01)
706 uli526x_free_tx_pkt(dev, db);
707
708 /* Restore CR7 to enable interrupt mask */
709 outl(db->cr7_data, ioaddr + DCR7);
710
711 spin_unlock_irqrestore(&db->lock, flags);
712 return IRQ_HANDLED;
713 }
714
715
716 /*
717 * Free TX resource after TX complete
718 */
719
720 static void uli526x_free_tx_pkt(struct net_device *dev, struct uli526x_board_info * db)
721 {
722 struct tx_desc *txptr;
723 u32 tdes0;
724
725 txptr = db->tx_remove_ptr;
726 while(db->tx_packet_cnt) {
727 tdes0 = le32_to_cpu(txptr->tdes0);
728 /* printk(DRV_NAME ": tdes0=%x\n", tdes0); */
729 if (tdes0 & 0x80000000)
730 break;
731
732 /* A packet sent completed */
733 db->tx_packet_cnt--;
734 db->stats.tx_packets++;
735
736 /* Transmit statistic counter */
737 if ( tdes0 != 0x7fffffff ) {
738 /* printk(DRV_NAME ": tdes0=%x\n", tdes0); */
739 db->stats.collisions += (tdes0 >> 3) & 0xf;
740 db->stats.tx_bytes += le32_to_cpu(txptr->tdes1) & 0x7ff;
741 if (tdes0 & TDES0_ERR_MASK) {
742 db->stats.tx_errors++;
743 if (tdes0 & 0x0002) { /* UnderRun */
744 db->tx_fifo_underrun++;
745 if ( !(db->cr6_data & CR6_SFT) ) {
746 db->cr6_data = db->cr6_data | CR6_SFT;
747 update_cr6(db->cr6_data, db->ioaddr);
748 }
749 }
750 if (tdes0 & 0x0100)
751 db->tx_excessive_collision++;
752 if (tdes0 & 0x0200)
753 db->tx_late_collision++;
754 if (tdes0 & 0x0400)
755 db->tx_no_carrier++;
756 if (tdes0 & 0x0800)
757 db->tx_loss_carrier++;
758 if (tdes0 & 0x4000)
759 db->tx_jabber_timeout++;
760 }
761 }
762
763 txptr = txptr->next_tx_desc;
764 }/* End of while */
765
766 /* Update TX remove pointer to next */
767 db->tx_remove_ptr = txptr;
768
769 /* Resource available check */
770 if ( db->tx_packet_cnt < TX_WAKE_DESC_CNT )
771 netif_wake_queue(dev); /* Active upper layer, send again */
772 }
773
774
775 /*
776 * Receive the come packet and pass to upper layer
777 */
778
779 static void uli526x_rx_packet(struct net_device *dev, struct uli526x_board_info * db)
780 {
781 struct rx_desc *rxptr;
782 struct sk_buff *skb;
783 int rxlen;
784 u32 rdes0;
785
786 rxptr = db->rx_ready_ptr;
787
788 while(db->rx_avail_cnt) {
789 rdes0 = le32_to_cpu(rxptr->rdes0);
790 if (rdes0 & 0x80000000) /* packet owner check */
791 {
792 break;
793 }
794
795 db->rx_avail_cnt--;
796 db->interval_rx_cnt++;
797
798 pci_unmap_single(db->pdev, le32_to_cpu(rxptr->rdes2), RX_ALLOC_SIZE, PCI_DMA_FROMDEVICE);
799 if ( (rdes0 & 0x300) != 0x300) {
800 /* A packet without First/Last flag */
801 /* reuse this SKB */
802 ULI526X_DBUG(0, "Reuse SK buffer, rdes0", rdes0);
803 uli526x_reuse_skb(db, rxptr->rx_skb_ptr);
804 } else {
805 /* A packet with First/Last flag */
806 rxlen = ( (rdes0 >> 16) & 0x3fff) - 4;
807
808 /* error summary bit check */
809 if (rdes0 & 0x8000) {
810 /* This is a error packet */
811 //printk(DRV_NAME ": rdes0: %lx\n", rdes0);
812 db->stats.rx_errors++;
813 if (rdes0 & 1)
814 db->stats.rx_fifo_errors++;
815 if (rdes0 & 2)
816 db->stats.rx_crc_errors++;
817 if (rdes0 & 0x80)
818 db->stats.rx_length_errors++;
819 }
820
821 if ( !(rdes0 & 0x8000) ||
822 ((db->cr6_data & CR6_PM) && (rxlen>6)) ) {
823 skb = rxptr->rx_skb_ptr;
824
825 /* Good packet, send to upper layer */
826 /* Shorst packet used new SKB */
827 if ( (rxlen < RX_COPY_SIZE) &&
828 ( (skb = dev_alloc_skb(rxlen + 2) )
829 != NULL) ) {
830 /* size less than COPY_SIZE, allocate a rxlen SKB */
831 skb->dev = dev;
832 skb_reserve(skb, 2); /* 16byte align */
833 memcpy(skb_put(skb, rxlen), rxptr->rx_skb_ptr->tail, rxlen);
834 uli526x_reuse_skb(db, rxptr->rx_skb_ptr);
835 } else {
836 skb->dev = dev;
837 skb_put(skb, rxlen);
838 }
839 skb->protocol = eth_type_trans(skb, dev);
840 netif_rx(skb);
841 dev->last_rx = jiffies;
842 db->stats.rx_packets++;
843 db->stats.rx_bytes += rxlen;
844
845 } else {
846 /* Reuse SKB buffer when the packet is error */
847 ULI526X_DBUG(0, "Reuse SK buffer, rdes0", rdes0);
848 uli526x_reuse_skb(db, rxptr->rx_skb_ptr);
849 }
850 }
851
852 rxptr = rxptr->next_rx_desc;
853 }
854
855 db->rx_ready_ptr = rxptr;
856 }
857
858
859 /*
860 * Get statistics from driver.
861 */
862
863 static struct net_device_stats * uli526x_get_stats(struct net_device *dev)
864 {
865 struct uli526x_board_info *db = netdev_priv(dev);
866
867 ULI526X_DBUG(0, "uli526x_get_stats", 0);
868 return &db->stats;
869 }
870
871
872 /*
873 * Set ULI526X multicast address
874 */
875
876 static void uli526x_set_filter_mode(struct net_device * dev)
877 {
878 struct uli526x_board_info *db = dev->priv;
879 unsigned long flags;
880
881 ULI526X_DBUG(0, "uli526x_set_filter_mode()", 0);
882 spin_lock_irqsave(&db->lock, flags);
883
884 if (dev->flags & IFF_PROMISC) {
885 ULI526X_DBUG(0, "Enable PROM Mode", 0);
886 db->cr6_data |= CR6_PM | CR6_PBF;
887 update_cr6(db->cr6_data, db->ioaddr);
888 spin_unlock_irqrestore(&db->lock, flags);
889 return;
890 }
891
892 if (dev->flags & IFF_ALLMULTI || dev->mc_count > ULI5261_MAX_MULTICAST) {
893 ULI526X_DBUG(0, "Pass all multicast address", dev->mc_count);
894 db->cr6_data &= ~(CR6_PM | CR6_PBF);
895 db->cr6_data |= CR6_PAM;
896 spin_unlock_irqrestore(&db->lock, flags);
897 return;
898 }
899
900 ULI526X_DBUG(0, "Set multicast address", dev->mc_count);
901 send_filter_frame(dev, dev->mc_count); /* M5261/M5263 */
902 spin_unlock_irqrestore(&db->lock, flags);
903 }
904
905 static void
906 ULi_ethtool_gset(struct uli526x_board_info *db, struct ethtool_cmd *ecmd)
907 {
908 ecmd->supported = (SUPPORTED_10baseT_Half |
909 SUPPORTED_10baseT_Full |
910 SUPPORTED_100baseT_Half |
911 SUPPORTED_100baseT_Full |
912 SUPPORTED_Autoneg |
913 SUPPORTED_MII);
914
915 ecmd->advertising = (ADVERTISED_10baseT_Half |
916 ADVERTISED_10baseT_Full |
917 ADVERTISED_100baseT_Half |
918 ADVERTISED_100baseT_Full |
919 ADVERTISED_Autoneg |
920 ADVERTISED_MII);
921
922
923 ecmd->port = PORT_MII;
924 ecmd->phy_address = db->phy_addr;
925
926 ecmd->transceiver = XCVR_EXTERNAL;
927
928 ecmd->speed = 10;
929 ecmd->duplex = DUPLEX_HALF;
930
931 if(db->op_mode==ULI526X_100MHF || db->op_mode==ULI526X_100MFD)
932 {
933 ecmd->speed = 100;
934 }
935 if(db->op_mode==ULI526X_10MFD || db->op_mode==ULI526X_100MFD)
936 {
937 ecmd->duplex = DUPLEX_FULL;
938 }
939 if(db->link_failed)
940 {
941 ecmd->speed = -1;
942 ecmd->duplex = -1;
943 }
944
945 if (db->media_mode & ULI526X_AUTO)
946 {
947 ecmd->autoneg = AUTONEG_ENABLE;
948 }
949 }
950
951 static void netdev_get_drvinfo(struct net_device *dev,
952 struct ethtool_drvinfo *info)
953 {
954 struct uli526x_board_info *np = netdev_priv(dev);
955
956 strcpy(info->driver, DRV_NAME);
957 strcpy(info->version, DRV_VERSION);
958 if (np->pdev)
959 strcpy(info->bus_info, pci_name(np->pdev));
960 else
961 sprintf(info->bus_info, "EISA 0x%lx %d",
962 dev->base_addr, dev->irq);
963 }
964
965 static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) {
966 struct uli526x_board_info *np = netdev_priv(dev);
967
968 ULi_ethtool_gset(np, cmd);
969
970 return 0;
971 }
972
973 static u32 netdev_get_link(struct net_device *dev) {
974 struct uli526x_board_info *np = netdev_priv(dev);
975
976 if(np->link_failed)
977 return 0;
978 else
979 return 1;
980 }
981
982 static void uli526x_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
983 {
984 wol->supported = WAKE_PHY | WAKE_MAGIC;
985 wol->wolopts = 0;
986 }
987
988 static struct ethtool_ops netdev_ethtool_ops = {
989 .get_drvinfo = netdev_get_drvinfo,
990 .get_settings = netdev_get_settings,
991 .get_link = netdev_get_link,
992 .get_wol = uli526x_get_wol,
993 };
994
995 /*
996 * A periodic timer routine
997 * Dynamic media sense, allocate Rx buffer...
998 */
999
1000 static void uli526x_timer(unsigned long data)
1001 {
1002 u32 tmp_cr8;
1003 unsigned char tmp_cr12=0;
1004 struct net_device *dev = (struct net_device *) data;
1005 struct uli526x_board_info *db = netdev_priv(dev);
1006 unsigned long flags;
1007 u8 TmpSpeed=10;
1008
1009 //ULI526X_DBUG(0, "uli526x_timer()", 0);
1010 spin_lock_irqsave(&db->lock, flags);
1011
1012
1013 /* Dynamic reset ULI526X : system error or transmit time-out */
1014 tmp_cr8 = inl(db->ioaddr + DCR8);
1015 if ( (db->interval_rx_cnt==0) && (tmp_cr8) ) {
1016 db->reset_cr8++;
1017 db->wait_reset = 1;
1018 }
1019 db->interval_rx_cnt = 0;
1020
1021 /* TX polling kick monitor */
1022 if ( db->tx_packet_cnt &&
1023 time_after(jiffies, dev->trans_start + ULI526X_TX_KICK) ) {
1024 outl(0x1, dev->base_addr + DCR1); // Tx polling again
1025
1026 // TX Timeout
1027 if ( time_after(jiffies, dev->trans_start + ULI526X_TX_TIMEOUT) ) {
1028 db->reset_TXtimeout++;
1029 db->wait_reset = 1;
1030 printk( "%s: Tx timeout - resetting\n",
1031 dev->name);
1032 }
1033 }
1034
1035 if (db->wait_reset) {
1036 ULI526X_DBUG(0, "Dynamic Reset device", db->tx_packet_cnt);
1037 db->reset_count++;
1038 uli526x_dynamic_reset(dev);
1039 db->timer.expires = ULI526X_TIMER_WUT;
1040 add_timer(&db->timer);
1041 spin_unlock_irqrestore(&db->lock, flags);
1042 return;
1043 }
1044
1045 /* Link status check, Dynamic media type change */
1046 if((phy_read(db->ioaddr, db->phy_addr, 5, db->chip_id) & 0x01e0)!=0)
1047 tmp_cr12 = 3;
1048
1049 if ( !(tmp_cr12 & 0x3) && !db->link_failed ) {
1050 /* Link Failed */
1051 ULI526X_DBUG(0, "Link Failed", tmp_cr12);
1052 netif_carrier_off(dev);
1053 printk(KERN_INFO "uli526x: %s NIC Link is Down\n",dev->name);
1054 db->link_failed = 1;
1055
1056 /* For Force 10/100M Half/Full mode: Enable Auto-Nego mode */
1057 /* AUTO don't need */
1058 if ( !(db->media_mode & 0x8) )
1059 phy_write(db->ioaddr, db->phy_addr, 0, 0x1000, db->chip_id);
1060
1061 /* AUTO mode, if INT phyxcer link failed, select EXT device */
1062 if (db->media_mode & ULI526X_AUTO) {
1063 db->cr6_data&=~0x00000200; /* bit9=0, HD mode */
1064 update_cr6(db->cr6_data, db->ioaddr);
1065 }
1066 } else
1067 if ((tmp_cr12 & 0x3) && db->link_failed) {
1068 ULI526X_DBUG(0, "Link link OK", tmp_cr12);
1069 db->link_failed = 0;
1070
1071 /* Auto Sense Speed */
1072 if ( (db->media_mode & ULI526X_AUTO) &&
1073 uli526x_sense_speed(db) )
1074 db->link_failed = 1;
1075 uli526x_process_mode(db);
1076
1077 if(db->link_failed==0)
1078 {
1079 if(db->op_mode==ULI526X_100MHF || db->op_mode==ULI526X_100MFD)
1080 {
1081 TmpSpeed = 100;
1082 }
1083 if(db->op_mode==ULI526X_10MFD || db->op_mode==ULI526X_100MFD)
1084 {
1085 printk(KERN_INFO "uli526x: %s NIC Link is Up %d Mbps Full duplex\n",dev->name,TmpSpeed);
1086 }
1087 else
1088 {
1089 printk(KERN_INFO "uli526x: %s NIC Link is Up %d Mbps Half duplex\n",dev->name,TmpSpeed);
1090 }
1091 netif_carrier_on(dev);
1092 }
1093 /* SHOW_MEDIA_TYPE(db->op_mode); */
1094 }
1095 else if(!(tmp_cr12 & 0x3) && db->link_failed)
1096 {
1097 if(db->init==1)
1098 {
1099 printk(KERN_INFO "uli526x: %s NIC Link is Down\n",dev->name);
1100 netif_carrier_off(dev);
1101 }
1102 }
1103 db->init=0;
1104
1105 /* Timer active again */
1106 db->timer.expires = ULI526X_TIMER_WUT;
1107 add_timer(&db->timer);
1108 spin_unlock_irqrestore(&db->lock, flags);
1109 }
1110
1111
1112 /*
1113 * Dynamic reset the ULI526X board
1114 * Stop ULI526X board
1115 * Free Tx/Rx allocated memory
1116 * Reset ULI526X board
1117 * Re-initialize ULI526X board
1118 */
1119
1120 static void uli526x_dynamic_reset(struct net_device *dev)
1121 {
1122 struct uli526x_board_info *db = netdev_priv(dev);
1123
1124 ULI526X_DBUG(0, "uli526x_dynamic_reset()", 0);
1125
1126 /* Sopt MAC controller */
1127 db->cr6_data &= ~(CR6_RXSC | CR6_TXSC); /* Disable Tx/Rx */
1128 update_cr6(db->cr6_data, dev->base_addr);
1129 outl(0, dev->base_addr + DCR7); /* Disable Interrupt */
1130 outl(inl(dev->base_addr + DCR5), dev->base_addr + DCR5);
1131
1132 /* Disable upper layer interface */
1133 netif_stop_queue(dev);
1134
1135 /* Free Rx Allocate buffer */
1136 uli526x_free_rxbuffer(db);
1137
1138 /* system variable init */
1139 db->tx_packet_cnt = 0;
1140 db->rx_avail_cnt = 0;
1141 db->link_failed = 1;
1142 db->init=1;
1143 db->wait_reset = 0;
1144
1145 /* Re-initialize ULI526X board */
1146 uli526x_init(dev);
1147
1148 /* Restart upper layer interface */
1149 netif_wake_queue(dev);
1150 }
1151
1152
1153 /*
1154 * free all allocated rx buffer
1155 */
1156
1157 static void uli526x_free_rxbuffer(struct uli526x_board_info * db)
1158 {
1159 ULI526X_DBUG(0, "uli526x_free_rxbuffer()", 0);
1160
1161 /* free allocated rx buffer */
1162 while (db->rx_avail_cnt) {
1163 dev_kfree_skb(db->rx_ready_ptr->rx_skb_ptr);
1164 db->rx_ready_ptr = db->rx_ready_ptr->next_rx_desc;
1165 db->rx_avail_cnt--;
1166 }
1167 }
1168
1169
1170 /*
1171 * Reuse the SK buffer
1172 */
1173
1174 static void uli526x_reuse_skb(struct uli526x_board_info *db, struct sk_buff * skb)
1175 {
1176 struct rx_desc *rxptr = db->rx_insert_ptr;
1177
1178 if (!(rxptr->rdes0 & cpu_to_le32(0x80000000))) {
1179 rxptr->rx_skb_ptr = skb;
1180 rxptr->rdes2 = cpu_to_le32( pci_map_single(db->pdev, skb->tail, RX_ALLOC_SIZE, PCI_DMA_FROMDEVICE) );
1181 wmb();
1182 rxptr->rdes0 = cpu_to_le32(0x80000000);
1183 db->rx_avail_cnt++;
1184 db->rx_insert_ptr = rxptr->next_rx_desc;
1185 } else
1186 ULI526X_DBUG(0, "SK Buffer reuse method error", db->rx_avail_cnt);
1187 }
1188
1189
1190 /*
1191 * Initialize transmit/Receive descriptor
1192 * Using Chain structure, and allocate Tx/Rx buffer
1193 */
1194
1195 static void uli526x_descriptor_init(struct uli526x_board_info *db, unsigned long ioaddr)
1196 {
1197 struct tx_desc *tmp_tx;
1198 struct rx_desc *tmp_rx;
1199 unsigned char *tmp_buf;
1200 dma_addr_t tmp_tx_dma, tmp_rx_dma;
1201 dma_addr_t tmp_buf_dma;
1202 int i;
1203
1204 ULI526X_DBUG(0, "uli526x_descriptor_init()", 0);
1205
1206 /* tx descriptor start pointer */
1207 db->tx_insert_ptr = db->first_tx_desc;
1208 db->tx_remove_ptr = db->first_tx_desc;
1209 outl(db->first_tx_desc_dma, ioaddr + DCR4); /* TX DESC address */
1210
1211 /* rx descriptor start pointer */
1212 db->first_rx_desc = (void *)db->first_tx_desc + sizeof(struct tx_desc) * TX_DESC_CNT;
1213 db->first_rx_desc_dma = db->first_tx_desc_dma + sizeof(struct tx_desc) * TX_DESC_CNT;
1214 db->rx_insert_ptr = db->first_rx_desc;
1215 db->rx_ready_ptr = db->first_rx_desc;
1216 outl(db->first_rx_desc_dma, ioaddr + DCR3); /* RX DESC address */
1217
1218 /* Init Transmit chain */
1219 tmp_buf = db->buf_pool_start;
1220 tmp_buf_dma = db->buf_pool_dma_start;
1221 tmp_tx_dma = db->first_tx_desc_dma;
1222 for (tmp_tx = db->first_tx_desc, i = 0; i < TX_DESC_CNT; i++, tmp_tx++) {
1223 tmp_tx->tx_buf_ptr = tmp_buf;
1224 tmp_tx->tdes0 = cpu_to_le32(0);
1225 tmp_tx->tdes1 = cpu_to_le32(0x81000000); /* IC, chain */
1226 tmp_tx->tdes2 = cpu_to_le32(tmp_buf_dma);
1227 tmp_tx_dma += sizeof(struct tx_desc);
1228 tmp_tx->tdes3 = cpu_to_le32(tmp_tx_dma);
1229 tmp_tx->next_tx_desc = tmp_tx + 1;
1230 tmp_buf = tmp_buf + TX_BUF_ALLOC;
1231 tmp_buf_dma = tmp_buf_dma + TX_BUF_ALLOC;
1232 }
1233 (--tmp_tx)->tdes3 = cpu_to_le32(db->first_tx_desc_dma);
1234 tmp_tx->next_tx_desc = db->first_tx_desc;
1235
1236 /* Init Receive descriptor chain */
1237 tmp_rx_dma=db->first_rx_desc_dma;
1238 for (tmp_rx = db->first_rx_desc, i = 0; i < RX_DESC_CNT; i++, tmp_rx++) {
1239 tmp_rx->rdes0 = cpu_to_le32(0);
1240 tmp_rx->rdes1 = cpu_to_le32(0x01000600);
1241 tmp_rx_dma += sizeof(struct rx_desc);
1242 tmp_rx->rdes3 = cpu_to_le32(tmp_rx_dma);
1243 tmp_rx->next_rx_desc = tmp_rx + 1;
1244 }
1245 (--tmp_rx)->rdes3 = cpu_to_le32(db->first_rx_desc_dma);
1246 tmp_rx->next_rx_desc = db->first_rx_desc;
1247
1248 /* pre-allocate Rx buffer */
1249 allocate_rx_buffer(db);
1250 }
1251
1252
1253 /*
1254 * Update CR6 value
1255 * Firstly stop ULI526X, then written value and start
1256 */
1257
1258 static void update_cr6(u32 cr6_data, unsigned long ioaddr)
1259 {
1260
1261 outl(cr6_data, ioaddr + DCR6);
1262 udelay(5);
1263 }
1264
1265
1266 /*
1267 * Send a setup frame for M5261/M5263
1268 * This setup frame initialize ULI526X address filter mode
1269 */
1270
1271 static void send_filter_frame(struct net_device *dev, int mc_cnt)
1272 {
1273 struct uli526x_board_info *db = netdev_priv(dev);
1274 struct dev_mc_list *mcptr;
1275 struct tx_desc *txptr;
1276 u16 * addrptr;
1277 u32 * suptr;
1278 int i;
1279
1280 ULI526X_DBUG(0, "send_filter_frame()", 0);
1281
1282 txptr = db->tx_insert_ptr;
1283 suptr = (u32 *) txptr->tx_buf_ptr;
1284
1285 /* Node address */
1286 addrptr = (u16 *) dev->dev_addr;
1287 *suptr++ = addrptr[0];
1288 *suptr++ = addrptr[1];
1289 *suptr++ = addrptr[2];
1290
1291 /* broadcast address */
1292 *suptr++ = 0xffff;
1293 *suptr++ = 0xffff;
1294 *suptr++ = 0xffff;
1295
1296 /* fit the multicast address */
1297 for (mcptr = dev->mc_list, i = 0; i < mc_cnt; i++, mcptr = mcptr->next) {
1298 addrptr = (u16 *) mcptr->dmi_addr;
1299 *suptr++ = addrptr[0];
1300 *suptr++ = addrptr[1];
1301 *suptr++ = addrptr[2];
1302 }
1303
1304 for (; i<14; i++) {
1305 *suptr++ = 0xffff;
1306 *suptr++ = 0xffff;
1307 *suptr++ = 0xffff;
1308 }
1309
1310 /* prepare the setup frame */
1311 db->tx_insert_ptr = txptr->next_tx_desc;
1312 txptr->tdes1 = cpu_to_le32(0x890000c0);
1313
1314 /* Resource Check and Send the setup packet */
1315 if (db->tx_packet_cnt < TX_DESC_CNT) {
1316 /* Resource Empty */
1317 db->tx_packet_cnt++;
1318 txptr->tdes0 = cpu_to_le32(0x80000000);
1319 update_cr6(db->cr6_data | 0x2000, dev->base_addr);
1320 outl(0x1, dev->base_addr + DCR1); /* Issue Tx polling */
1321 update_cr6(db->cr6_data, dev->base_addr);
1322 dev->trans_start = jiffies;
1323 } else
1324 printk(KERN_ERR DRV_NAME ": No Tx resource - Send_filter_frame!\n");
1325 }
1326
1327
1328 /*
1329 * Allocate rx buffer,
1330 * As possible as allocate maxiumn Rx buffer
1331 */
1332
1333 static void allocate_rx_buffer(struct uli526x_board_info *db)
1334 {
1335 struct rx_desc *rxptr;
1336 struct sk_buff *skb;
1337
1338 rxptr = db->rx_insert_ptr;
1339
1340 while(db->rx_avail_cnt < RX_DESC_CNT) {
1341 if ( ( skb = dev_alloc_skb(RX_ALLOC_SIZE) ) == NULL )
1342 break;
1343 rxptr->rx_skb_ptr = skb; /* FIXME (?) */
1344 rxptr->rdes2 = cpu_to_le32( pci_map_single(db->pdev, skb->tail, RX_ALLOC_SIZE, PCI_DMA_FROMDEVICE) );
1345 wmb();
1346 rxptr->rdes0 = cpu_to_le32(0x80000000);
1347 rxptr = rxptr->next_rx_desc;
1348 db->rx_avail_cnt++;
1349 }
1350
1351 db->rx_insert_ptr = rxptr;
1352 }
1353
1354
1355 /*
1356 * Read one word data from the serial ROM
1357 */
1358
1359 static u16 read_srom_word(long ioaddr, int offset)
1360 {
1361 int i;
1362 u16 srom_data = 0;
1363 long cr9_ioaddr = ioaddr + DCR9;
1364
1365 outl(CR9_SROM_READ, cr9_ioaddr);
1366 outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr);
1367
1368 /* Send the Read Command 110b */
1369 SROM_CLK_WRITE(SROM_DATA_1, cr9_ioaddr);
1370 SROM_CLK_WRITE(SROM_DATA_1, cr9_ioaddr);
1371 SROM_CLK_WRITE(SROM_DATA_0, cr9_ioaddr);
1372
1373 /* Send the offset */
1374 for (i = 5; i >= 0; i--) {
1375 srom_data = (offset & (1 << i)) ? SROM_DATA_1 : SROM_DATA_0;
1376 SROM_CLK_WRITE(srom_data, cr9_ioaddr);
1377 }
1378
1379 outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr);
1380
1381 for (i = 16; i > 0; i--) {
1382 outl(CR9_SROM_READ | CR9_SRCS | CR9_SRCLK, cr9_ioaddr);
1383 udelay(5);
1384 srom_data = (srom_data << 1) | ((inl(cr9_ioaddr) & CR9_CRDOUT) ? 1 : 0);
1385 outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr);
1386 udelay(5);
1387 }
1388
1389 outl(CR9_SROM_READ, cr9_ioaddr);
1390 return srom_data;
1391 }
1392
1393
1394 /*
1395 * Auto sense the media mode
1396 */
1397
1398 static u8 uli526x_sense_speed(struct uli526x_board_info * db)
1399 {
1400 u8 ErrFlag = 0;
1401 u16 phy_mode;
1402
1403 phy_mode = phy_read(db->ioaddr, db->phy_addr, 1, db->chip_id);
1404 phy_mode = phy_read(db->ioaddr, db->phy_addr, 1, db->chip_id);
1405
1406 if ( (phy_mode & 0x24) == 0x24 ) {
1407
1408 phy_mode = ((phy_read(db->ioaddr, db->phy_addr, 5, db->chip_id) & 0x01e0)<<7);
1409 if(phy_mode&0x8000)
1410 phy_mode = 0x8000;
1411 else if(phy_mode&0x4000)
1412 phy_mode = 0x4000;
1413 else if(phy_mode&0x2000)
1414 phy_mode = 0x2000;
1415 else
1416 phy_mode = 0x1000;
1417
1418 /* printk(DRV_NAME ": Phy_mode %x ",phy_mode); */
1419 switch (phy_mode) {
1420 case 0x1000: db->op_mode = ULI526X_10MHF; break;
1421 case 0x2000: db->op_mode = ULI526X_10MFD; break;
1422 case 0x4000: db->op_mode = ULI526X_100MHF; break;
1423 case 0x8000: db->op_mode = ULI526X_100MFD; break;
1424 default: db->op_mode = ULI526X_10MHF; ErrFlag = 1; break;
1425 }
1426 } else {
1427 db->op_mode = ULI526X_10MHF;
1428 ULI526X_DBUG(0, "Link Failed :", phy_mode);
1429 ErrFlag = 1;
1430 }
1431
1432 return ErrFlag;
1433 }
1434
1435
1436 /*
1437 * Set 10/100 phyxcer capability
1438 * AUTO mode : phyxcer register4 is NIC capability
1439 * Force mode: phyxcer register4 is the force media
1440 */
1441
1442 static void uli526x_set_phyxcer(struct uli526x_board_info *db)
1443 {
1444 u16 phy_reg;
1445
1446 /* Phyxcer capability setting */
1447 phy_reg = phy_read(db->ioaddr, db->phy_addr, 4, db->chip_id) & ~0x01e0;
1448
1449 if (db->media_mode & ULI526X_AUTO) {
1450 /* AUTO Mode */
1451 phy_reg |= db->PHY_reg4;
1452 } else {
1453 /* Force Mode */
1454 switch(db->media_mode) {
1455 case ULI526X_10MHF: phy_reg |= 0x20; break;
1456 case ULI526X_10MFD: phy_reg |= 0x40; break;
1457 case ULI526X_100MHF: phy_reg |= 0x80; break;
1458 case ULI526X_100MFD: phy_reg |= 0x100; break;
1459 }
1460
1461 }
1462
1463 /* Write new capability to Phyxcer Reg4 */
1464 if ( !(phy_reg & 0x01e0)) {
1465 phy_reg|=db->PHY_reg4;
1466 db->media_mode|=ULI526X_AUTO;
1467 }
1468 phy_write(db->ioaddr, db->phy_addr, 4, phy_reg, db->chip_id);
1469
1470 /* Restart Auto-Negotiation */
1471 phy_write(db->ioaddr, db->phy_addr, 0, 0x1200, db->chip_id);
1472 udelay(50);
1473 }
1474
1475
1476 /*
1477 * Process op-mode
1478 AUTO mode : PHY controller in Auto-negotiation Mode
1479 * Force mode: PHY controller in force mode with HUB
1480 * N-way force capability with SWITCH
1481 */
1482
1483 static void uli526x_process_mode(struct uli526x_board_info *db)
1484 {
1485 u16 phy_reg;
1486
1487 /* Full Duplex Mode Check */
1488 if (db->op_mode & 0x4)
1489 db->cr6_data |= CR6_FDM; /* Set Full Duplex Bit */
1490 else
1491 db->cr6_data &= ~CR6_FDM; /* Clear Full Duplex Bit */
1492
1493 update_cr6(db->cr6_data, db->ioaddr);
1494
1495 /* 10/100M phyxcer force mode need */
1496 if ( !(db->media_mode & 0x8)) {
1497 /* Forece Mode */
1498 phy_reg = phy_read(db->ioaddr, db->phy_addr, 6, db->chip_id);
1499 if ( !(phy_reg & 0x1) ) {
1500 /* parter without N-Way capability */
1501 phy_reg = 0x0;
1502 switch(db->op_mode) {
1503 case ULI526X_10MHF: phy_reg = 0x0; break;
1504 case ULI526X_10MFD: phy_reg = 0x100; break;
1505 case ULI526X_100MHF: phy_reg = 0x2000; break;
1506 case ULI526X_100MFD: phy_reg = 0x2100; break;
1507 }
1508 phy_write(db->ioaddr, db->phy_addr, 0, phy_reg, db->chip_id);
1509 phy_write(db->ioaddr, db->phy_addr, 0, phy_reg, db->chip_id);
1510 }
1511 }
1512 }
1513
1514
1515 /*
1516 * Write a word to Phy register
1517 */
1518
1519 static void phy_write(unsigned long iobase, u8 phy_addr, u8 offset, u16 phy_data, u32 chip_id)
1520 {
1521 u16 i;
1522 unsigned long ioaddr;
1523
1524 if(chip_id == PCI_ULI5263_ID)
1525 {
1526 phy_writeby_cr10(iobase, phy_addr, offset, phy_data);
1527 return;
1528 }
1529 /* M5261/M5263 Chip */
1530 ioaddr = iobase + DCR9;
1531
1532 /* Send 33 synchronization clock to Phy controller */
1533 for (i = 0; i < 35; i++)
1534 phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
1535
1536 /* Send start command(01) to Phy */
1537 phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
1538 phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
1539
1540 /* Send write command(01) to Phy */
1541 phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
1542 phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
1543
1544 /* Send Phy address */
1545 for (i = 0x10; i > 0; i = i >> 1)
1546 phy_write_1bit(ioaddr, phy_addr & i ? PHY_DATA_1 : PHY_DATA_0, chip_id);
1547
1548 /* Send register address */
1549 for (i = 0x10; i > 0; i = i >> 1)
1550 phy_write_1bit(ioaddr, offset & i ? PHY_DATA_1 : PHY_DATA_0, chip_id);
1551
1552 /* written trasnition */
1553 phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
1554 phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
1555
1556 /* Write a word data to PHY controller */
1557 for ( i = 0x8000; i > 0; i >>= 1)
1558 phy_write_1bit(ioaddr, phy_data & i ? PHY_DATA_1 : PHY_DATA_0, chip_id);
1559
1560 }
1561
1562
1563 /*
1564 * Read a word data from phy register
1565 */
1566
1567 static u16 phy_read(unsigned long iobase, u8 phy_addr, u8 offset, u32 chip_id)
1568 {
1569 int i;
1570 u16 phy_data;
1571 unsigned long ioaddr;
1572
1573 if(chip_id == PCI_ULI5263_ID)
1574 return phy_readby_cr10(iobase, phy_addr, offset);
1575 /* M5261/M5263 Chip */
1576 ioaddr = iobase + DCR9;
1577
1578 /* Send 33 synchronization clock to Phy controller */
1579 for (i = 0; i < 35; i++)
1580 phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
1581
1582 /* Send start command(01) to Phy */
1583 phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
1584 phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
1585
1586 /* Send read command(10) to Phy */
1587 phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
1588 phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
1589
1590 /* Send Phy address */
1591 for (i = 0x10; i > 0; i = i >> 1)
1592 phy_write_1bit(ioaddr, phy_addr & i ? PHY_DATA_1 : PHY_DATA_0, chip_id);
1593
1594 /* Send register address */
1595 for (i = 0x10; i > 0; i = i >> 1)
1596 phy_write_1bit(ioaddr, offset & i ? PHY_DATA_1 : PHY_DATA_0, chip_id);
1597
1598 /* Skip transition state */
1599 phy_read_1bit(ioaddr, chip_id);
1600
1601 /* read 16bit data */
1602 for (phy_data = 0, i = 0; i < 16; i++) {
1603 phy_data <<= 1;
1604 phy_data |= phy_read_1bit(ioaddr, chip_id);
1605 }
1606
1607 return phy_data;
1608 }
1609
1610 static u16 phy_readby_cr10(unsigned long iobase, u8 phy_addr, u8 offset)
1611 {
1612 unsigned long ioaddr,cr10_value;
1613
1614 ioaddr = iobase + DCR10;
1615 cr10_value = phy_addr;
1616 cr10_value = (cr10_value<<5) + offset;
1617 cr10_value = (cr10_value<<16) + 0x08000000;
1618 outl(cr10_value,ioaddr);
1619 udelay(1);
1620 while(1)
1621 {
1622 cr10_value = inl(ioaddr);
1623 if(cr10_value&0x10000000)
1624 break;
1625 }
1626 return (cr10_value&0x0ffff);
1627 }
1628
1629 static void phy_writeby_cr10(unsigned long iobase, u8 phy_addr, u8 offset, u16 phy_data)
1630 {
1631 unsigned long ioaddr,cr10_value;
1632
1633 ioaddr = iobase + DCR10;
1634 cr10_value = phy_addr;
1635 cr10_value = (cr10_value<<5) + offset;
1636 cr10_value = (cr10_value<<16) + 0x04000000 + phy_data;
1637 outl(cr10_value,ioaddr);
1638 udelay(1);
1639 }
1640 /*
1641 * Write one bit data to Phy Controller
1642 */
1643
1644 static void phy_write_1bit(unsigned long ioaddr, u32 phy_data, u32 chip_id)
1645 {
1646 outl(phy_data , ioaddr); /* MII Clock Low */
1647 udelay(1);
1648 outl(phy_data | MDCLKH, ioaddr); /* MII Clock High */
1649 udelay(1);
1650 outl(phy_data , ioaddr); /* MII Clock Low */
1651 udelay(1);
1652 }
1653
1654
1655 /*
1656 * Read one bit phy data from PHY controller
1657 */
1658
1659 static u16 phy_read_1bit(unsigned long ioaddr, u32 chip_id)
1660 {
1661 u16 phy_data;
1662
1663 outl(0x50000 , ioaddr);
1664 udelay(1);
1665 phy_data = ( inl(ioaddr) >> 19 ) & 0x1;
1666 outl(0x40000 , ioaddr);
1667 udelay(1);
1668
1669 return phy_data;
1670 }
1671
1672
1673 static struct pci_device_id uli526x_pci_tbl[] = {
1674 { 0x10B9, 0x5261, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_ULI5261_ID },
1675 { 0x10B9, 0x5263, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_ULI5263_ID },
1676 { 0, }
1677 };
1678 MODULE_DEVICE_TABLE(pci, uli526x_pci_tbl);
1679
1680
1681 static struct pci_driver uli526x_driver = {
1682 .name = "uli526x",
1683 .id_table = uli526x_pci_tbl,
1684 .probe = uli526x_init_one,
1685 .remove = __devexit_p(uli526x_remove_one),
1686 };
1687
1688 MODULE_AUTHOR("Peer Chen, peer.chen@uli.com.tw");
1689 MODULE_DESCRIPTION("ULi M5261/M5263 fast ethernet driver");
1690 MODULE_LICENSE("GPL");
1691
1692 module_param(debug, int, 0644);
1693 module_param(mode, int, 0);
1694 module_param(cr6set, int, 0);
1695 MODULE_PARM_DESC(debug, "ULi M5261/M5263 enable debugging (0-1)");
1696 MODULE_PARM_DESC(mode, "ULi M5261/M5263: Bit 0: 10/100Mbps, bit 2: duplex, bit 8: HomePNA");
1697
1698 /* Description:
1699 * when user used insmod to add module, system invoked init_module()
1700 * to register the services.
1701 */
1702
1703 static int __init uli526x_init_module(void)
1704 {
1705 int rc;
1706
1707 printk(version);
1708 printed_version = 1;
1709
1710 ULI526X_DBUG(0, "init_module() ", debug);
1711
1712 if (debug)
1713 uli526x_debug = debug; /* set debug flag */
1714 if (cr6set)
1715 uli526x_cr6_user_set = cr6set;
1716
1717 switch(mode) {
1718 case ULI526X_10MHF:
1719 case ULI526X_100MHF:
1720 case ULI526X_10MFD:
1721 case ULI526X_100MFD:
1722 uli526x_media_mode = mode;
1723 break;
1724 default:uli526x_media_mode = ULI526X_AUTO;
1725 break;
1726 }
1727
1728 rc = pci_module_init(&uli526x_driver);
1729 if (rc < 0)
1730 return rc;
1731
1732 return 0;
1733 }
1734
1735
1736 /*
1737 * Description:
1738 * when user used rmmod to delete module, system invoked clean_module()
1739 * to un-register all registered services.
1740 */
1741
1742 static void __exit uli526x_cleanup_module(void)
1743 {
1744 ULI526X_DBUG(0, "uli526x_clean_module() ", debug);
1745 pci_unregister_driver(&uli526x_driver);
1746 }
1747
1748 module_init(uli526x_init_module);
1749 module_exit(uli526x_cleanup_module);
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