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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 pr_fmt(fmt) KBUILD_MODNAME ": " fmt
16
17#define DRV_NAME "uli526x"
18#define DRV_VERSION "0.9.3"
19#define DRV_RELDATE "2005-7-29"
20
21#include <linux/module.h>
22
23#include <linux/kernel.h>
24#include <linux/string.h>
25#include <linux/timer.h>
26#include <linux/errno.h>
27#include <linux/ioport.h>
28#include <linux/interrupt.h>
29#include <linux/pci.h>
30#include <linux/init.h>
31#include <linux/netdevice.h>
32#include <linux/etherdevice.h>
33#include <linux/ethtool.h>
34#include <linux/skbuff.h>
35#include <linux/delay.h>
36#include <linux/spinlock.h>
37#include <linux/dma-mapping.h>
38#include <linux/bitops.h>
39
40#include <asm/processor.h>
41#include <asm/io.h>
42#include <asm/dma.h>
43#include <asm/uaccess.h>
44
45#define uw32(reg, val) iowrite32(val, ioaddr + (reg))
46#define ur32(reg) ioread32(ioaddr + (reg))
47
48/* Board/System/Debug information/definition ---------------- */
49#define PCI_ULI5261_ID 0x526110B9 /* ULi M5261 ID*/
50#define PCI_ULI5263_ID 0x526310B9 /* ULi M5263 ID*/
51
52#define ULI526X_IO_SIZE 0x100
53#define TX_DESC_CNT 0x20 /* Allocated Tx descriptors */
54#define RX_DESC_CNT 0x30 /* Allocated Rx descriptors */
55#define TX_FREE_DESC_CNT (TX_DESC_CNT - 2) /* Max TX packet count */
56#define TX_WAKE_DESC_CNT (TX_DESC_CNT - 3) /* TX wakeup count */
57#define DESC_ALL_CNT (TX_DESC_CNT + RX_DESC_CNT)
58#define TX_BUF_ALLOC 0x600
59#define RX_ALLOC_SIZE 0x620
60#define ULI526X_RESET 1
61#define CR0_DEFAULT 0
62#define CR6_DEFAULT 0x22200000
63#define CR7_DEFAULT 0x180c1
64#define CR15_DEFAULT 0x06 /* TxJabber RxWatchdog */
65#define TDES0_ERR_MASK 0x4302 /* TXJT, LC, EC, FUE */
66#define MAX_PACKET_SIZE 1514
67#define ULI5261_MAX_MULTICAST 14
68#define RX_COPY_SIZE 100
69#define MAX_CHECK_PACKET 0x8000
70
71#define ULI526X_10MHF 0
72#define ULI526X_100MHF 1
73#define ULI526X_10MFD 4
74#define ULI526X_100MFD 5
75#define ULI526X_AUTO 8
76
77#define ULI526X_TXTH_72 0x400000 /* TX TH 72 byte */
78#define ULI526X_TXTH_96 0x404000 /* TX TH 96 byte */
79#define ULI526X_TXTH_128 0x0000 /* TX TH 128 byte */
80#define ULI526X_TXTH_256 0x4000 /* TX TH 256 byte */
81#define ULI526X_TXTH_512 0x8000 /* TX TH 512 byte */
82#define ULI526X_TXTH_1K 0xC000 /* TX TH 1K byte */
83
84#define ULI526X_TIMER_WUT (jiffies + HZ * 1)/* timer wakeup time : 1 second */
85#define ULI526X_TX_TIMEOUT ((16*HZ)/2) /* tx packet time-out time 8 s" */
86#define ULI526X_TX_KICK (4*HZ/2) /* tx packet Kick-out time 2 s" */
87
88#define ULI526X_DBUG(dbug_now, msg, value) \
89do { \
90 if (uli526x_debug || (dbug_now)) \
91 pr_err("%s %lx\n", (msg), (long) (value)); \
92} while (0)
93
94#define SHOW_MEDIA_TYPE(mode) \
95 pr_err("Change Speed to %sMhz %s duplex\n", \
96 mode & 1 ? "100" : "10", \
97 mode & 4 ? "full" : "half");
98
99
100/* CR9 definition: SROM/MII */
101#define CR9_SROM_READ 0x4800
102#define CR9_SRCS 0x1
103#define CR9_SRCLK 0x2
104#define CR9_CRDOUT 0x8
105#define SROM_DATA_0 0x0
106#define SROM_DATA_1 0x4
107#define PHY_DATA_1 0x20000
108#define PHY_DATA_0 0x00000
109#define MDCLKH 0x10000
110
111#define PHY_POWER_DOWN 0x800
112
113#define SROM_V41_CODE 0x14
114
115/* Structure/enum declaration ------------------------------- */
116struct tx_desc {
117 __le32 tdes0, tdes1, tdes2, tdes3; /* Data for the card */
118 char *tx_buf_ptr; /* Data for us */
119 struct tx_desc *next_tx_desc;
120} __attribute__(( aligned(32) ));
121
122struct rx_desc {
123 __le32 rdes0, rdes1, rdes2, rdes3; /* Data for the card */
124 struct sk_buff *rx_skb_ptr; /* Data for us */
125 struct rx_desc *next_rx_desc;
126} __attribute__(( aligned(32) ));
127
128struct uli526x_board_info {
129 struct uli_phy_ops {
130 void (*write)(struct uli526x_board_info *, u8, u8, u16);
131 u16 (*read)(struct uli526x_board_info *, u8, u8);
132 } phy;
133 struct net_device *next_dev; /* next device */
134 struct pci_dev *pdev; /* PCI device */
135 spinlock_t lock;
136
137 void __iomem *ioaddr; /* I/O base address */
138 u32 cr0_data;
139 u32 cr5_data;
140 u32 cr6_data;
141 u32 cr7_data;
142 u32 cr15_data;
143
144 /* pointer for memory physical address */
145 dma_addr_t buf_pool_dma_ptr; /* Tx buffer pool memory */
146 dma_addr_t buf_pool_dma_start; /* Tx buffer pool align dword */
147 dma_addr_t desc_pool_dma_ptr; /* descriptor pool memory */
148 dma_addr_t first_tx_desc_dma;
149 dma_addr_t first_rx_desc_dma;
150
151 /* descriptor pointer */
152 unsigned char *buf_pool_ptr; /* Tx buffer pool memory */
153 unsigned char *buf_pool_start; /* Tx buffer pool align dword */
154 unsigned char *desc_pool_ptr; /* descriptor pool memory */
155 struct tx_desc *first_tx_desc;
156 struct tx_desc *tx_insert_ptr;
157 struct tx_desc *tx_remove_ptr;
158 struct rx_desc *first_rx_desc;
159 struct rx_desc *rx_insert_ptr;
160 struct rx_desc *rx_ready_ptr; /* packet come pointer */
161 unsigned long tx_packet_cnt; /* transmitted packet count */
162 unsigned long rx_avail_cnt; /* available rx descriptor count */
163 unsigned long interval_rx_cnt; /* rx packet count a callback time */
164
165 u16 dbug_cnt;
166 u16 NIC_capability; /* NIC media capability */
167 u16 PHY_reg4; /* Saved Phyxcer register 4 value */
168
169 u8 media_mode; /* user specify media mode */
170 u8 op_mode; /* real work media mode */
171 u8 phy_addr;
172 u8 link_failed; /* Ever link failed */
173 u8 wait_reset; /* Hardware failed, need to reset */
174 struct timer_list timer;
175
176 /* Driver defined statistic counter */
177 unsigned long tx_fifo_underrun;
178 unsigned long tx_loss_carrier;
179 unsigned long tx_no_carrier;
180 unsigned long tx_late_collision;
181 unsigned long tx_excessive_collision;
182 unsigned long tx_jabber_timeout;
183 unsigned long reset_count;
184 unsigned long reset_cr8;
185 unsigned long reset_fatal;
186 unsigned long reset_TXtimeout;
187
188 /* NIC SROM data */
189 unsigned char srom[128];
190 u8 init;
191};
192
193enum uli526x_offsets {
194 DCR0 = 0x00, DCR1 = 0x08, DCR2 = 0x10, DCR3 = 0x18, DCR4 = 0x20,
195 DCR5 = 0x28, DCR6 = 0x30, DCR7 = 0x38, DCR8 = 0x40, DCR9 = 0x48,
196 DCR10 = 0x50, DCR11 = 0x58, DCR12 = 0x60, DCR13 = 0x68, DCR14 = 0x70,
197 DCR15 = 0x78
198};
199
200enum uli526x_CR6_bits {
201 CR6_RXSC = 0x2, CR6_PBF = 0x8, CR6_PM = 0x40, CR6_PAM = 0x80,
202 CR6_FDM = 0x200, CR6_TXSC = 0x2000, CR6_STI = 0x100000,
203 CR6_SFT = 0x200000, CR6_RXA = 0x40000000, CR6_NO_PURGE = 0x20000000
204};
205
206/* Global variable declaration ----------------------------- */
207static int printed_version;
208static const char version[] =
209 "ULi M5261/M5263 net driver, version " DRV_VERSION " (" DRV_RELDATE ")";
210
211static int uli526x_debug;
212static unsigned char uli526x_media_mode = ULI526X_AUTO;
213static u32 uli526x_cr6_user_set;
214
215/* For module input parameter */
216static int debug;
217static u32 cr6set;
218static int mode = 8;
219
220/* function declaration ------------------------------------- */
221static int uli526x_open(struct net_device *);
222static netdev_tx_t uli526x_start_xmit(struct sk_buff *,
223 struct net_device *);
224static int uli526x_stop(struct net_device *);
225static void uli526x_set_filter_mode(struct net_device *);
226static const struct ethtool_ops netdev_ethtool_ops;
227static u16 read_srom_word(struct uli526x_board_info *, int);
228static irqreturn_t uli526x_interrupt(int, void *);
229#ifdef CONFIG_NET_POLL_CONTROLLER
230static void uli526x_poll(struct net_device *dev);
231#endif
232static void uli526x_descriptor_init(struct net_device *, void __iomem *);
233static void allocate_rx_buffer(struct net_device *);
234static void update_cr6(u32, void __iomem *);
235static void send_filter_frame(struct net_device *, int);
236static u16 phy_readby_cr9(struct uli526x_board_info *, u8, u8);
237static u16 phy_readby_cr10(struct uli526x_board_info *, u8, u8);
238static void phy_writeby_cr9(struct uli526x_board_info *, u8, u8, u16);
239static void phy_writeby_cr10(struct uli526x_board_info *, u8, u8, u16);
240static void phy_write_1bit(struct uli526x_board_info *db, u32);
241static u16 phy_read_1bit(struct uli526x_board_info *db);
242static u8 uli526x_sense_speed(struct uli526x_board_info *);
243static void uli526x_process_mode(struct uli526x_board_info *);
244static void uli526x_timer(unsigned long);
245static void uli526x_rx_packet(struct net_device *, struct uli526x_board_info *);
246static void uli526x_free_tx_pkt(struct net_device *, struct uli526x_board_info *);
247static void uli526x_reuse_skb(struct uli526x_board_info *, struct sk_buff *);
248static void uli526x_dynamic_reset(struct net_device *);
249static void uli526x_free_rxbuffer(struct uli526x_board_info *);
250static void uli526x_init(struct net_device *);
251static void uli526x_set_phyxcer(struct uli526x_board_info *);
252
253static void srom_clk_write(struct uli526x_board_info *db, u32 data)
254{
255 void __iomem *ioaddr = db->ioaddr;
256
257 uw32(DCR9, data | CR9_SROM_READ | CR9_SRCS);
258 udelay(5);
259 uw32(DCR9, data | CR9_SROM_READ | CR9_SRCS | CR9_SRCLK);
260 udelay(5);
261 uw32(DCR9, data | CR9_SROM_READ | CR9_SRCS);
262 udelay(5);
263}
264
265/* ULI526X network board routine ---------------------------- */
266
267static const struct net_device_ops netdev_ops = {
268 .ndo_open = uli526x_open,
269 .ndo_stop = uli526x_stop,
270 .ndo_start_xmit = uli526x_start_xmit,
271 .ndo_set_rx_mode = uli526x_set_filter_mode,
272 .ndo_change_mtu = eth_change_mtu,
273 .ndo_set_mac_address = eth_mac_addr,
274 .ndo_validate_addr = eth_validate_addr,
275#ifdef CONFIG_NET_POLL_CONTROLLER
276 .ndo_poll_controller = uli526x_poll,
277#endif
278};
279
280/*
281 * Search ULI526X board, allocate space and register it
282 */
283
284static int uli526x_init_one(struct pci_dev *pdev,
285 const struct pci_device_id *ent)
286{
287 struct uli526x_board_info *db; /* board information structure */
288 struct net_device *dev;
289 void __iomem *ioaddr;
290 int i, err;
291
292 ULI526X_DBUG(0, "uli526x_init_one()", 0);
293
294 if (!printed_version++)
295 pr_info("%s\n", version);
296
297 /* Init network device */
298 dev = alloc_etherdev(sizeof(*db));
299 if (dev == NULL)
300 return -ENOMEM;
301 SET_NETDEV_DEV(dev, &pdev->dev);
302
303 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
304 pr_warn("32-bit PCI DMA not available\n");
305 err = -ENODEV;
306 goto err_out_free;
307 }
308
309 /* Enable Master/IO access, Disable memory access */
310 err = pci_enable_device(pdev);
311 if (err)
312 goto err_out_free;
313
314 if (!pci_resource_start(pdev, 0)) {
315 pr_err("I/O base is zero\n");
316 err = -ENODEV;
317 goto err_out_disable;
318 }
319
320 if (pci_resource_len(pdev, 0) < (ULI526X_IO_SIZE) ) {
321 pr_err("Allocated I/O size too small\n");
322 err = -ENODEV;
323 goto err_out_disable;
324 }
325
326 err = pci_request_regions(pdev, DRV_NAME);
327 if (err < 0) {
328 pr_err("Failed to request PCI regions\n");
329 goto err_out_disable;
330 }
331
332 /* Init system & device */
333 db = netdev_priv(dev);
334
335 /* Allocate Tx/Rx descriptor memory */
336 err = -ENOMEM;
337
338 db->desc_pool_ptr = pci_alloc_consistent(pdev, sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20, &db->desc_pool_dma_ptr);
339 if (!db->desc_pool_ptr)
340 goto err_out_release;
341
342 db->buf_pool_ptr = pci_alloc_consistent(pdev, TX_BUF_ALLOC * TX_DESC_CNT + 4, &db->buf_pool_dma_ptr);
343 if (!db->buf_pool_ptr)
344 goto err_out_free_tx_desc;
345
346 db->first_tx_desc = (struct tx_desc *) db->desc_pool_ptr;
347 db->first_tx_desc_dma = db->desc_pool_dma_ptr;
348 db->buf_pool_start = db->buf_pool_ptr;
349 db->buf_pool_dma_start = db->buf_pool_dma_ptr;
350
351 switch (ent->driver_data) {
352 case PCI_ULI5263_ID:
353 db->phy.write = phy_writeby_cr10;
354 db->phy.read = phy_readby_cr10;
355 break;
356 default:
357 db->phy.write = phy_writeby_cr9;
358 db->phy.read = phy_readby_cr9;
359 break;
360 }
361
362 /* IO region. */
363 ioaddr = pci_iomap(pdev, 0, 0);
364 if (!ioaddr)
365 goto err_out_free_tx_buf;
366
367 db->ioaddr = ioaddr;
368 db->pdev = pdev;
369 db->init = 1;
370
371 pci_set_drvdata(pdev, dev);
372
373 /* Register some necessary functions */
374 dev->netdev_ops = &netdev_ops;
375 dev->ethtool_ops = &netdev_ethtool_ops;
376
377 spin_lock_init(&db->lock);
378
379
380 /* read 64 word srom data */
381 for (i = 0; i < 64; i++)
382 ((__le16 *) db->srom)[i] = cpu_to_le16(read_srom_word(db, i));
383
384 /* Set Node address */
385 if(((u16 *) db->srom)[0] == 0xffff || ((u16 *) db->srom)[0] == 0) /* SROM absent, so read MAC address from ID Table */
386 {
387 uw32(DCR0, 0x10000); //Diagnosis mode
388 uw32(DCR13, 0x1c0); //Reset dianostic pointer port
389 uw32(DCR14, 0); //Clear reset port
390 uw32(DCR14, 0x10); //Reset ID Table pointer
391 uw32(DCR14, 0); //Clear reset port
392 uw32(DCR13, 0); //Clear CR13
393 uw32(DCR13, 0x1b0); //Select ID Table access port
394 //Read MAC address from CR14
395 for (i = 0; i < 6; i++)
396 dev->dev_addr[i] = ur32(DCR14);
397 //Read end
398 uw32(DCR13, 0); //Clear CR13
399 uw32(DCR0, 0); //Clear CR0
400 udelay(10);
401 }
402 else /*Exist SROM*/
403 {
404 for (i = 0; i < 6; i++)
405 dev->dev_addr[i] = db->srom[20 + i];
406 }
407 err = register_netdev (dev);
408 if (err)
409 goto err_out_unmap;
410
411 netdev_info(dev, "ULi M%04lx at pci%s, %pM, irq %d\n",
412 ent->driver_data >> 16, pci_name(pdev),
413 dev->dev_addr, pdev->irq);
414
415 pci_set_master(pdev);
416
417 return 0;
418
419err_out_unmap:
420 pci_iounmap(pdev, db->ioaddr);
421err_out_free_tx_buf:
422 pci_free_consistent(pdev, TX_BUF_ALLOC * TX_DESC_CNT + 4,
423 db->buf_pool_ptr, db->buf_pool_dma_ptr);
424err_out_free_tx_desc:
425 pci_free_consistent(pdev, sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20,
426 db->desc_pool_ptr, db->desc_pool_dma_ptr);
427err_out_release:
428 pci_release_regions(pdev);
429err_out_disable:
430 pci_disable_device(pdev);
431err_out_free:
432 free_netdev(dev);
433
434 return err;
435}
436
437
438static void uli526x_remove_one(struct pci_dev *pdev)
439{
440 struct net_device *dev = pci_get_drvdata(pdev);
441 struct uli526x_board_info *db = netdev_priv(dev);
442
443 unregister_netdev(dev);
444 pci_iounmap(pdev, db->ioaddr);
445 pci_free_consistent(db->pdev, sizeof(struct tx_desc) *
446 DESC_ALL_CNT + 0x20, db->desc_pool_ptr,
447 db->desc_pool_dma_ptr);
448 pci_free_consistent(db->pdev, TX_BUF_ALLOC * TX_DESC_CNT + 4,
449 db->buf_pool_ptr, db->buf_pool_dma_ptr);
450 pci_release_regions(pdev);
451 pci_disable_device(pdev);
452 free_netdev(dev);
453}
454
455
456/*
457 * Open the interface.
458 * The interface is opened whenever "ifconfig" activates it.
459 */
460
461static int uli526x_open(struct net_device *dev)
462{
463 int ret;
464 struct uli526x_board_info *db = netdev_priv(dev);
465
466 ULI526X_DBUG(0, "uli526x_open", 0);
467
468 /* system variable init */
469 db->cr6_data = CR6_DEFAULT | uli526x_cr6_user_set;
470 db->tx_packet_cnt = 0;
471 db->rx_avail_cnt = 0;
472 db->link_failed = 1;
473 netif_carrier_off(dev);
474 db->wait_reset = 0;
475
476 db->NIC_capability = 0xf; /* All capability*/
477 db->PHY_reg4 = 0x1e0;
478
479 /* CR6 operation mode decision */
480 db->cr6_data |= ULI526X_TXTH_256;
481 db->cr0_data = CR0_DEFAULT;
482
483 /* Initialize ULI526X board */
484 uli526x_init(dev);
485
486 ret = request_irq(db->pdev->irq, uli526x_interrupt, IRQF_SHARED,
487 dev->name, dev);
488 if (ret)
489 return ret;
490
491 /* Active System Interface */
492 netif_wake_queue(dev);
493
494 /* set and active a timer process */
495 init_timer(&db->timer);
496 db->timer.expires = ULI526X_TIMER_WUT + HZ * 2;
497 db->timer.data = (unsigned long)dev;
498 db->timer.function = uli526x_timer;
499 add_timer(&db->timer);
500
501 return 0;
502}
503
504
505/* Initialize ULI526X board
506 * Reset ULI526X board
507 * Initialize TX/Rx descriptor chain structure
508 * Send the set-up frame
509 * Enable Tx/Rx machine
510 */
511
512static void uli526x_init(struct net_device *dev)
513{
514 struct uli526x_board_info *db = netdev_priv(dev);
515 struct uli_phy_ops *phy = &db->phy;
516 void __iomem *ioaddr = db->ioaddr;
517 u8 phy_tmp;
518 u8 timeout;
519 u16 phy_reg_reset;
520
521
522 ULI526X_DBUG(0, "uli526x_init()", 0);
523
524 /* Reset M526x MAC controller */
525 uw32(DCR0, ULI526X_RESET); /* RESET MAC */
526 udelay(100);
527 uw32(DCR0, db->cr0_data);
528 udelay(5);
529
530 /* Phy addr : In some boards,M5261/M5263 phy address != 1 */
531 db->phy_addr = 1;
532 for (phy_tmp = 0; phy_tmp < 32; phy_tmp++) {
533 u16 phy_value;
534
535 phy_value = phy->read(db, phy_tmp, 3); //peer add
536 if (phy_value != 0xffff && phy_value != 0) {
537 db->phy_addr = phy_tmp;
538 break;
539 }
540 }
541
542 if (phy_tmp == 32)
543 pr_warn("Can not find the phy address!!!\n");
544 /* Parser SROM and media mode */
545 db->media_mode = uli526x_media_mode;
546
547 /* phyxcer capability setting */
548 phy_reg_reset = phy->read(db, db->phy_addr, 0);
549 phy_reg_reset = (phy_reg_reset | 0x8000);
550 phy->write(db, db->phy_addr, 0, phy_reg_reset);
551
552 /* See IEEE 802.3-2002.pdf (Section 2, Chapter "22.2.4 Management
553 * functions") or phy data sheet for details on phy reset
554 */
555 udelay(500);
556 timeout = 10;
557 while (timeout-- && phy->read(db, db->phy_addr, 0) & 0x8000)
558 udelay(100);
559
560 /* Process Phyxcer Media Mode */
561 uli526x_set_phyxcer(db);
562
563 /* Media Mode Process */
564 if ( !(db->media_mode & ULI526X_AUTO) )
565 db->op_mode = db->media_mode; /* Force Mode */
566
567 /* Initialize Transmit/Receive decriptor and CR3/4 */
568 uli526x_descriptor_init(dev, ioaddr);
569
570 /* Init CR6 to program M526X operation */
571 update_cr6(db->cr6_data, ioaddr);
572
573 /* Send setup frame */
574 send_filter_frame(dev, netdev_mc_count(dev)); /* M5261/M5263 */
575
576 /* Init CR7, interrupt active bit */
577 db->cr7_data = CR7_DEFAULT;
578 uw32(DCR7, db->cr7_data);
579
580 /* Init CR15, Tx jabber and Rx watchdog timer */
581 uw32(DCR15, db->cr15_data);
582
583 /* Enable ULI526X Tx/Rx function */
584 db->cr6_data |= CR6_RXSC | CR6_TXSC;
585 update_cr6(db->cr6_data, ioaddr);
586}
587
588
589/*
590 * Hardware start transmission.
591 * Send a packet to media from the upper layer.
592 */
593
594static netdev_tx_t uli526x_start_xmit(struct sk_buff *skb,
595 struct net_device *dev)
596{
597 struct uli526x_board_info *db = netdev_priv(dev);
598 void __iomem *ioaddr = db->ioaddr;
599 struct tx_desc *txptr;
600 unsigned long flags;
601
602 ULI526X_DBUG(0, "uli526x_start_xmit", 0);
603
604 /* Resource flag check */
605 netif_stop_queue(dev);
606
607 /* Too large packet check */
608 if (skb->len > MAX_PACKET_SIZE) {
609 netdev_err(dev, "big packet = %d\n", (u16)skb->len);
610 dev_kfree_skb_any(skb);
611 return NETDEV_TX_OK;
612 }
613
614 spin_lock_irqsave(&db->lock, flags);
615
616 /* No Tx resource check, it never happen nromally */
617 if (db->tx_packet_cnt >= TX_FREE_DESC_CNT) {
618 spin_unlock_irqrestore(&db->lock, flags);
619 netdev_err(dev, "No Tx resource %ld\n", db->tx_packet_cnt);
620 return NETDEV_TX_BUSY;
621 }
622
623 /* Disable NIC interrupt */
624 uw32(DCR7, 0);
625
626 /* transmit this packet */
627 txptr = db->tx_insert_ptr;
628 skb_copy_from_linear_data(skb, txptr->tx_buf_ptr, skb->len);
629 txptr->tdes1 = cpu_to_le32(0xe1000000 | skb->len);
630
631 /* Point to next transmit free descriptor */
632 db->tx_insert_ptr = txptr->next_tx_desc;
633
634 /* Transmit Packet Process */
635 if (db->tx_packet_cnt < TX_DESC_CNT) {
636 txptr->tdes0 = cpu_to_le32(0x80000000); /* Set owner bit */
637 db->tx_packet_cnt++; /* Ready to send */
638 uw32(DCR1, 0x1); /* Issue Tx polling */
639 dev->trans_start = jiffies; /* saved time stamp */
640 }
641
642 /* Tx resource check */
643 if ( db->tx_packet_cnt < TX_FREE_DESC_CNT )
644 netif_wake_queue(dev);
645
646 /* Restore CR7 to enable interrupt */
647 spin_unlock_irqrestore(&db->lock, flags);
648 uw32(DCR7, db->cr7_data);
649
650 /* free this SKB */
651 dev_consume_skb_any(skb);
652
653 return NETDEV_TX_OK;
654}
655
656
657/*
658 * Stop the interface.
659 * The interface is stopped when it is brought.
660 */
661
662static int uli526x_stop(struct net_device *dev)
663{
664 struct uli526x_board_info *db = netdev_priv(dev);
665 void __iomem *ioaddr = db->ioaddr;
666
667 /* disable system */
668 netif_stop_queue(dev);
669
670 /* deleted timer */
671 del_timer_sync(&db->timer);
672
673 /* Reset & stop ULI526X board */
674 uw32(DCR0, ULI526X_RESET);
675 udelay(5);
676 db->phy.write(db, db->phy_addr, 0, 0x8000);
677
678 /* free interrupt */
679 free_irq(db->pdev->irq, dev);
680
681 /* free allocated rx buffer */
682 uli526x_free_rxbuffer(db);
683
684 return 0;
685}
686
687
688/*
689 * M5261/M5263 insterrupt handler
690 * receive the packet to upper layer, free the transmitted packet
691 */
692
693static irqreturn_t uli526x_interrupt(int irq, void *dev_id)
694{
695 struct net_device *dev = dev_id;
696 struct uli526x_board_info *db = netdev_priv(dev);
697 void __iomem *ioaddr = db->ioaddr;
698 unsigned long flags;
699
700 spin_lock_irqsave(&db->lock, flags);
701 uw32(DCR7, 0);
702
703 /* Got ULI526X status */
704 db->cr5_data = ur32(DCR5);
705 uw32(DCR5, db->cr5_data);
706 if ( !(db->cr5_data & 0x180c1) ) {
707 /* Restore CR7 to enable interrupt mask */
708 uw32(DCR7, db->cr7_data);
709 spin_unlock_irqrestore(&db->lock, flags);
710 return IRQ_HANDLED;
711 }
712
713 /* Check system status */
714 if (db->cr5_data & 0x2000) {
715 /* system bus error happen */
716 ULI526X_DBUG(1, "System bus error happen. CR5=", db->cr5_data);
717 db->reset_fatal++;
718 db->wait_reset = 1; /* Need to RESET */
719 spin_unlock_irqrestore(&db->lock, flags);
720 return IRQ_HANDLED;
721 }
722
723 /* Received the coming packet */
724 if ( (db->cr5_data & 0x40) && db->rx_avail_cnt )
725 uli526x_rx_packet(dev, db);
726
727 /* reallocate rx descriptor buffer */
728 if (db->rx_avail_cnt<RX_DESC_CNT)
729 allocate_rx_buffer(dev);
730
731 /* Free the transmitted descriptor */
732 if ( db->cr5_data & 0x01)
733 uli526x_free_tx_pkt(dev, db);
734
735 /* Restore CR7 to enable interrupt mask */
736 uw32(DCR7, db->cr7_data);
737
738 spin_unlock_irqrestore(&db->lock, flags);
739 return IRQ_HANDLED;
740}
741
742#ifdef CONFIG_NET_POLL_CONTROLLER
743static void uli526x_poll(struct net_device *dev)
744{
745 struct uli526x_board_info *db = netdev_priv(dev);
746
747 /* ISR grabs the irqsave lock, so this should be safe */
748 uli526x_interrupt(db->pdev->irq, dev);
749}
750#endif
751
752/*
753 * Free TX resource after TX complete
754 */
755
756static void uli526x_free_tx_pkt(struct net_device *dev,
757 struct uli526x_board_info * db)
758{
759 struct tx_desc *txptr;
760 u32 tdes0;
761
762 txptr = db->tx_remove_ptr;
763 while(db->tx_packet_cnt) {
764 tdes0 = le32_to_cpu(txptr->tdes0);
765 if (tdes0 & 0x80000000)
766 break;
767
768 /* A packet sent completed */
769 db->tx_packet_cnt--;
770 dev->stats.tx_packets++;
771
772 /* Transmit statistic counter */
773 if ( tdes0 != 0x7fffffff ) {
774 dev->stats.collisions += (tdes0 >> 3) & 0xf;
775 dev->stats.tx_bytes += le32_to_cpu(txptr->tdes1) & 0x7ff;
776 if (tdes0 & TDES0_ERR_MASK) {
777 dev->stats.tx_errors++;
778 if (tdes0 & 0x0002) { /* UnderRun */
779 db->tx_fifo_underrun++;
780 if ( !(db->cr6_data & CR6_SFT) ) {
781 db->cr6_data = db->cr6_data | CR6_SFT;
782 update_cr6(db->cr6_data, db->ioaddr);
783 }
784 }
785 if (tdes0 & 0x0100)
786 db->tx_excessive_collision++;
787 if (tdes0 & 0x0200)
788 db->tx_late_collision++;
789 if (tdes0 & 0x0400)
790 db->tx_no_carrier++;
791 if (tdes0 & 0x0800)
792 db->tx_loss_carrier++;
793 if (tdes0 & 0x4000)
794 db->tx_jabber_timeout++;
795 }
796 }
797
798 txptr = txptr->next_tx_desc;
799 }/* End of while */
800
801 /* Update TX remove pointer to next */
802 db->tx_remove_ptr = txptr;
803
804 /* Resource available check */
805 if ( db->tx_packet_cnt < TX_WAKE_DESC_CNT )
806 netif_wake_queue(dev); /* Active upper layer, send again */
807}
808
809
810/*
811 * Receive the come packet and pass to upper layer
812 */
813
814static void uli526x_rx_packet(struct net_device *dev, struct uli526x_board_info * db)
815{
816 struct rx_desc *rxptr;
817 struct sk_buff *skb;
818 int rxlen;
819 u32 rdes0;
820
821 rxptr = db->rx_ready_ptr;
822
823 while(db->rx_avail_cnt) {
824 rdes0 = le32_to_cpu(rxptr->rdes0);
825 if (rdes0 & 0x80000000) /* packet owner check */
826 {
827 break;
828 }
829
830 db->rx_avail_cnt--;
831 db->interval_rx_cnt++;
832
833 pci_unmap_single(db->pdev, le32_to_cpu(rxptr->rdes2), RX_ALLOC_SIZE, PCI_DMA_FROMDEVICE);
834 if ( (rdes0 & 0x300) != 0x300) {
835 /* A packet without First/Last flag */
836 /* reuse this SKB */
837 ULI526X_DBUG(0, "Reuse SK buffer, rdes0", rdes0);
838 uli526x_reuse_skb(db, rxptr->rx_skb_ptr);
839 } else {
840 /* A packet with First/Last flag */
841 rxlen = ( (rdes0 >> 16) & 0x3fff) - 4;
842
843 /* error summary bit check */
844 if (rdes0 & 0x8000) {
845 /* This is a error packet */
846 dev->stats.rx_errors++;
847 if (rdes0 & 1)
848 dev->stats.rx_fifo_errors++;
849 if (rdes0 & 2)
850 dev->stats.rx_crc_errors++;
851 if (rdes0 & 0x80)
852 dev->stats.rx_length_errors++;
853 }
854
855 if ( !(rdes0 & 0x8000) ||
856 ((db->cr6_data & CR6_PM) && (rxlen>6)) ) {
857 struct sk_buff *new_skb = NULL;
858
859 skb = rxptr->rx_skb_ptr;
860
861 /* Good packet, send to upper layer */
862 /* Shorst packet used new SKB */
863 if ((rxlen < RX_COPY_SIZE) &&
864 (((new_skb = netdev_alloc_skb(dev, rxlen + 2)) != NULL))) {
865 skb = new_skb;
866 /* size less than COPY_SIZE, allocate a rxlen SKB */
867 skb_reserve(skb, 2); /* 16byte align */
868 memcpy(skb_put(skb, rxlen),
869 skb_tail_pointer(rxptr->rx_skb_ptr),
870 rxlen);
871 uli526x_reuse_skb(db, rxptr->rx_skb_ptr);
872 } else
873 skb_put(skb, rxlen);
874
875 skb->protocol = eth_type_trans(skb, dev);
876 netif_rx(skb);
877 dev->stats.rx_packets++;
878 dev->stats.rx_bytes += rxlen;
879
880 } else {
881 /* Reuse SKB buffer when the packet is error */
882 ULI526X_DBUG(0, "Reuse SK buffer, rdes0", rdes0);
883 uli526x_reuse_skb(db, rxptr->rx_skb_ptr);
884 }
885 }
886
887 rxptr = rxptr->next_rx_desc;
888 }
889
890 db->rx_ready_ptr = rxptr;
891}
892
893
894/*
895 * Set ULI526X multicast address
896 */
897
898static void uli526x_set_filter_mode(struct net_device * dev)
899{
900 struct uli526x_board_info *db = netdev_priv(dev);
901 unsigned long flags;
902
903 ULI526X_DBUG(0, "uli526x_set_filter_mode()", 0);
904 spin_lock_irqsave(&db->lock, flags);
905
906 if (dev->flags & IFF_PROMISC) {
907 ULI526X_DBUG(0, "Enable PROM Mode", 0);
908 db->cr6_data |= CR6_PM | CR6_PBF;
909 update_cr6(db->cr6_data, db->ioaddr);
910 spin_unlock_irqrestore(&db->lock, flags);
911 return;
912 }
913
914 if (dev->flags & IFF_ALLMULTI ||
915 netdev_mc_count(dev) > ULI5261_MAX_MULTICAST) {
916 ULI526X_DBUG(0, "Pass all multicast address",
917 netdev_mc_count(dev));
918 db->cr6_data &= ~(CR6_PM | CR6_PBF);
919 db->cr6_data |= CR6_PAM;
920 spin_unlock_irqrestore(&db->lock, flags);
921 return;
922 }
923
924 ULI526X_DBUG(0, "Set multicast address", netdev_mc_count(dev));
925 send_filter_frame(dev, netdev_mc_count(dev)); /* M5261/M5263 */
926 spin_unlock_irqrestore(&db->lock, flags);
927}
928
929static void
930ULi_ethtool_gset(struct uli526x_board_info *db, struct ethtool_cmd *ecmd)
931{
932 ecmd->supported = (SUPPORTED_10baseT_Half |
933 SUPPORTED_10baseT_Full |
934 SUPPORTED_100baseT_Half |
935 SUPPORTED_100baseT_Full |
936 SUPPORTED_Autoneg |
937 SUPPORTED_MII);
938
939 ecmd->advertising = (ADVERTISED_10baseT_Half |
940 ADVERTISED_10baseT_Full |
941 ADVERTISED_100baseT_Half |
942 ADVERTISED_100baseT_Full |
943 ADVERTISED_Autoneg |
944 ADVERTISED_MII);
945
946
947 ecmd->port = PORT_MII;
948 ecmd->phy_address = db->phy_addr;
949
950 ecmd->transceiver = XCVR_EXTERNAL;
951
952 ethtool_cmd_speed_set(ecmd, SPEED_10);
953 ecmd->duplex = DUPLEX_HALF;
954
955 if(db->op_mode==ULI526X_100MHF || db->op_mode==ULI526X_100MFD)
956 {
957 ethtool_cmd_speed_set(ecmd, SPEED_100);
958 }
959 if(db->op_mode==ULI526X_10MFD || db->op_mode==ULI526X_100MFD)
960 {
961 ecmd->duplex = DUPLEX_FULL;
962 }
963 if(db->link_failed)
964 {
965 ethtool_cmd_speed_set(ecmd, -1);
966 ecmd->duplex = -1;
967 }
968
969 if (db->media_mode & ULI526X_AUTO)
970 {
971 ecmd->autoneg = AUTONEG_ENABLE;
972 }
973}
974
975static void netdev_get_drvinfo(struct net_device *dev,
976 struct ethtool_drvinfo *info)
977{
978 struct uli526x_board_info *np = netdev_priv(dev);
979
980 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
981 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
982 strlcpy(info->bus_info, pci_name(np->pdev), sizeof(info->bus_info));
983}
984
985static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) {
986 struct uli526x_board_info *np = netdev_priv(dev);
987
988 ULi_ethtool_gset(np, cmd);
989
990 return 0;
991}
992
993static u32 netdev_get_link(struct net_device *dev) {
994 struct uli526x_board_info *np = netdev_priv(dev);
995
996 if(np->link_failed)
997 return 0;
998 else
999 return 1;
1000}
1001
1002static void uli526x_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
1003{
1004 wol->supported = WAKE_PHY | WAKE_MAGIC;
1005 wol->wolopts = 0;
1006}
1007
1008static const struct ethtool_ops netdev_ethtool_ops = {
1009 .get_drvinfo = netdev_get_drvinfo,
1010 .get_settings = netdev_get_settings,
1011 .get_link = netdev_get_link,
1012 .get_wol = uli526x_get_wol,
1013};
1014
1015/*
1016 * A periodic timer routine
1017 * Dynamic media sense, allocate Rx buffer...
1018 */
1019
1020static void uli526x_timer(unsigned long data)
1021{
1022 struct net_device *dev = (struct net_device *) data;
1023 struct uli526x_board_info *db = netdev_priv(dev);
1024 struct uli_phy_ops *phy = &db->phy;
1025 void __iomem *ioaddr = db->ioaddr;
1026 unsigned long flags;
1027 u8 tmp_cr12 = 0;
1028 u32 tmp_cr8;
1029
1030 //ULI526X_DBUG(0, "uli526x_timer()", 0);
1031 spin_lock_irqsave(&db->lock, flags);
1032
1033
1034 /* Dynamic reset ULI526X : system error or transmit time-out */
1035 tmp_cr8 = ur32(DCR8);
1036 if ( (db->interval_rx_cnt==0) && (tmp_cr8) ) {
1037 db->reset_cr8++;
1038 db->wait_reset = 1;
1039 }
1040 db->interval_rx_cnt = 0;
1041
1042 /* TX polling kick monitor */
1043 if ( db->tx_packet_cnt &&
1044 time_after(jiffies, dev_trans_start(dev) + ULI526X_TX_KICK) ) {
1045 uw32(DCR1, 0x1); // Tx polling again
1046
1047 // TX Timeout
1048 if ( time_after(jiffies, dev_trans_start(dev) + ULI526X_TX_TIMEOUT) ) {
1049 db->reset_TXtimeout++;
1050 db->wait_reset = 1;
1051 netdev_err(dev, " Tx timeout - resetting\n");
1052 }
1053 }
1054
1055 if (db->wait_reset) {
1056 ULI526X_DBUG(0, "Dynamic Reset device", db->tx_packet_cnt);
1057 db->reset_count++;
1058 uli526x_dynamic_reset(dev);
1059 db->timer.expires = ULI526X_TIMER_WUT;
1060 add_timer(&db->timer);
1061 spin_unlock_irqrestore(&db->lock, flags);
1062 return;
1063 }
1064
1065 /* Link status check, Dynamic media type change */
1066 if ((phy->read(db, db->phy_addr, 5) & 0x01e0)!=0)
1067 tmp_cr12 = 3;
1068
1069 if ( !(tmp_cr12 & 0x3) && !db->link_failed ) {
1070 /* Link Failed */
1071 ULI526X_DBUG(0, "Link Failed", tmp_cr12);
1072 netif_carrier_off(dev);
1073 netdev_info(dev, "NIC Link is Down\n");
1074 db->link_failed = 1;
1075
1076 /* For Force 10/100M Half/Full mode: Enable Auto-Nego mode */
1077 /* AUTO don't need */
1078 if ( !(db->media_mode & 0x8) )
1079 phy->write(db, db->phy_addr, 0, 0x1000);
1080
1081 /* AUTO mode, if INT phyxcer link failed, select EXT device */
1082 if (db->media_mode & ULI526X_AUTO) {
1083 db->cr6_data&=~0x00000200; /* bit9=0, HD mode */
1084 update_cr6(db->cr6_data, db->ioaddr);
1085 }
1086 } else
1087 if ((tmp_cr12 & 0x3) && db->link_failed) {
1088 ULI526X_DBUG(0, "Link link OK", tmp_cr12);
1089 db->link_failed = 0;
1090
1091 /* Auto Sense Speed */
1092 if ( (db->media_mode & ULI526X_AUTO) &&
1093 uli526x_sense_speed(db) )
1094 db->link_failed = 1;
1095 uli526x_process_mode(db);
1096
1097 if(db->link_failed==0)
1098 {
1099 netdev_info(dev, "NIC Link is Up %d Mbps %s duplex\n",
1100 (db->op_mode == ULI526X_100MHF ||
1101 db->op_mode == ULI526X_100MFD)
1102 ? 100 : 10,
1103 (db->op_mode == ULI526X_10MFD ||
1104 db->op_mode == ULI526X_100MFD)
1105 ? "Full" : "Half");
1106 netif_carrier_on(dev);
1107 }
1108 /* SHOW_MEDIA_TYPE(db->op_mode); */
1109 }
1110 else if(!(tmp_cr12 & 0x3) && db->link_failed)
1111 {
1112 if(db->init==1)
1113 {
1114 netdev_info(dev, "NIC Link is Down\n");
1115 netif_carrier_off(dev);
1116 }
1117 }
1118 db->init=0;
1119
1120 /* Timer active again */
1121 db->timer.expires = ULI526X_TIMER_WUT;
1122 add_timer(&db->timer);
1123 spin_unlock_irqrestore(&db->lock, flags);
1124}
1125
1126
1127/*
1128 * Stop ULI526X board
1129 * Free Tx/Rx allocated memory
1130 * Init system variable
1131 */
1132
1133static void uli526x_reset_prepare(struct net_device *dev)
1134{
1135 struct uli526x_board_info *db = netdev_priv(dev);
1136 void __iomem *ioaddr = db->ioaddr;
1137
1138 /* Sopt MAC controller */
1139 db->cr6_data &= ~(CR6_RXSC | CR6_TXSC); /* Disable Tx/Rx */
1140 update_cr6(db->cr6_data, ioaddr);
1141 uw32(DCR7, 0); /* Disable Interrupt */
1142 uw32(DCR5, ur32(DCR5));
1143
1144 /* Disable upper layer interface */
1145 netif_stop_queue(dev);
1146
1147 /* Free Rx Allocate buffer */
1148 uli526x_free_rxbuffer(db);
1149
1150 /* system variable init */
1151 db->tx_packet_cnt = 0;
1152 db->rx_avail_cnt = 0;
1153 db->link_failed = 1;
1154 db->init=1;
1155 db->wait_reset = 0;
1156}
1157
1158
1159/*
1160 * Dynamic reset the ULI526X board
1161 * Stop ULI526X board
1162 * Free Tx/Rx allocated memory
1163 * Reset ULI526X board
1164 * Re-initialize ULI526X board
1165 */
1166
1167static void uli526x_dynamic_reset(struct net_device *dev)
1168{
1169 ULI526X_DBUG(0, "uli526x_dynamic_reset()", 0);
1170
1171 uli526x_reset_prepare(dev);
1172
1173 /* Re-initialize ULI526X board */
1174 uli526x_init(dev);
1175
1176 /* Restart upper layer interface */
1177 netif_wake_queue(dev);
1178}
1179
1180
1181#ifdef CONFIG_PM
1182
1183/*
1184 * Suspend the interface.
1185 */
1186
1187static int uli526x_suspend(struct pci_dev *pdev, pm_message_t state)
1188{
1189 struct net_device *dev = pci_get_drvdata(pdev);
1190 pci_power_t power_state;
1191 int err;
1192
1193 ULI526X_DBUG(0, "uli526x_suspend", 0);
1194
1195 pci_save_state(pdev);
1196
1197 if (!netif_running(dev))
1198 return 0;
1199
1200 netif_device_detach(dev);
1201 uli526x_reset_prepare(dev);
1202
1203 power_state = pci_choose_state(pdev, state);
1204 pci_enable_wake(pdev, power_state, 0);
1205 err = pci_set_power_state(pdev, power_state);
1206 if (err) {
1207 netif_device_attach(dev);
1208 /* Re-initialize ULI526X board */
1209 uli526x_init(dev);
1210 /* Restart upper layer interface */
1211 netif_wake_queue(dev);
1212 }
1213
1214 return err;
1215}
1216
1217/*
1218 * Resume the interface.
1219 */
1220
1221static int uli526x_resume(struct pci_dev *pdev)
1222{
1223 struct net_device *dev = pci_get_drvdata(pdev);
1224 int err;
1225
1226 ULI526X_DBUG(0, "uli526x_resume", 0);
1227
1228 pci_restore_state(pdev);
1229
1230 if (!netif_running(dev))
1231 return 0;
1232
1233 err = pci_set_power_state(pdev, PCI_D0);
1234 if (err) {
1235 netdev_warn(dev, "Could not put device into D0\n");
1236 return err;
1237 }
1238
1239 netif_device_attach(dev);
1240 /* Re-initialize ULI526X board */
1241 uli526x_init(dev);
1242 /* Restart upper layer interface */
1243 netif_wake_queue(dev);
1244
1245 return 0;
1246}
1247
1248#else /* !CONFIG_PM */
1249
1250#define uli526x_suspend NULL
1251#define uli526x_resume NULL
1252
1253#endif /* !CONFIG_PM */
1254
1255
1256/*
1257 * free all allocated rx buffer
1258 */
1259
1260static void uli526x_free_rxbuffer(struct uli526x_board_info * db)
1261{
1262 ULI526X_DBUG(0, "uli526x_free_rxbuffer()", 0);
1263
1264 /* free allocated rx buffer */
1265 while (db->rx_avail_cnt) {
1266 dev_kfree_skb(db->rx_ready_ptr->rx_skb_ptr);
1267 db->rx_ready_ptr = db->rx_ready_ptr->next_rx_desc;
1268 db->rx_avail_cnt--;
1269 }
1270}
1271
1272
1273/*
1274 * Reuse the SK buffer
1275 */
1276
1277static void uli526x_reuse_skb(struct uli526x_board_info *db, struct sk_buff * skb)
1278{
1279 struct rx_desc *rxptr = db->rx_insert_ptr;
1280
1281 if (!(rxptr->rdes0 & cpu_to_le32(0x80000000))) {
1282 rxptr->rx_skb_ptr = skb;
1283 rxptr->rdes2 = cpu_to_le32(pci_map_single(db->pdev,
1284 skb_tail_pointer(skb),
1285 RX_ALLOC_SIZE,
1286 PCI_DMA_FROMDEVICE));
1287 wmb();
1288 rxptr->rdes0 = cpu_to_le32(0x80000000);
1289 db->rx_avail_cnt++;
1290 db->rx_insert_ptr = rxptr->next_rx_desc;
1291 } else
1292 ULI526X_DBUG(0, "SK Buffer reuse method error", db->rx_avail_cnt);
1293}
1294
1295
1296/*
1297 * Initialize transmit/Receive descriptor
1298 * Using Chain structure, and allocate Tx/Rx buffer
1299 */
1300
1301static void uli526x_descriptor_init(struct net_device *dev, void __iomem *ioaddr)
1302{
1303 struct uli526x_board_info *db = netdev_priv(dev);
1304 struct tx_desc *tmp_tx;
1305 struct rx_desc *tmp_rx;
1306 unsigned char *tmp_buf;
1307 dma_addr_t tmp_tx_dma, tmp_rx_dma;
1308 dma_addr_t tmp_buf_dma;
1309 int i;
1310
1311 ULI526X_DBUG(0, "uli526x_descriptor_init()", 0);
1312
1313 /* tx descriptor start pointer */
1314 db->tx_insert_ptr = db->first_tx_desc;
1315 db->tx_remove_ptr = db->first_tx_desc;
1316 uw32(DCR4, db->first_tx_desc_dma); /* TX DESC address */
1317
1318 /* rx descriptor start pointer */
1319 db->first_rx_desc = (void *)db->first_tx_desc + sizeof(struct tx_desc) * TX_DESC_CNT;
1320 db->first_rx_desc_dma = db->first_tx_desc_dma + sizeof(struct tx_desc) * TX_DESC_CNT;
1321 db->rx_insert_ptr = db->first_rx_desc;
1322 db->rx_ready_ptr = db->first_rx_desc;
1323 uw32(DCR3, db->first_rx_desc_dma); /* RX DESC address */
1324
1325 /* Init Transmit chain */
1326 tmp_buf = db->buf_pool_start;
1327 tmp_buf_dma = db->buf_pool_dma_start;
1328 tmp_tx_dma = db->first_tx_desc_dma;
1329 for (tmp_tx = db->first_tx_desc, i = 0; i < TX_DESC_CNT; i++, tmp_tx++) {
1330 tmp_tx->tx_buf_ptr = tmp_buf;
1331 tmp_tx->tdes0 = cpu_to_le32(0);
1332 tmp_tx->tdes1 = cpu_to_le32(0x81000000); /* IC, chain */
1333 tmp_tx->tdes2 = cpu_to_le32(tmp_buf_dma);
1334 tmp_tx_dma += sizeof(struct tx_desc);
1335 tmp_tx->tdes3 = cpu_to_le32(tmp_tx_dma);
1336 tmp_tx->next_tx_desc = tmp_tx + 1;
1337 tmp_buf = tmp_buf + TX_BUF_ALLOC;
1338 tmp_buf_dma = tmp_buf_dma + TX_BUF_ALLOC;
1339 }
1340 (--tmp_tx)->tdes3 = cpu_to_le32(db->first_tx_desc_dma);
1341 tmp_tx->next_tx_desc = db->first_tx_desc;
1342
1343 /* Init Receive descriptor chain */
1344 tmp_rx_dma=db->first_rx_desc_dma;
1345 for (tmp_rx = db->first_rx_desc, i = 0; i < RX_DESC_CNT; i++, tmp_rx++) {
1346 tmp_rx->rdes0 = cpu_to_le32(0);
1347 tmp_rx->rdes1 = cpu_to_le32(0x01000600);
1348 tmp_rx_dma += sizeof(struct rx_desc);
1349 tmp_rx->rdes3 = cpu_to_le32(tmp_rx_dma);
1350 tmp_rx->next_rx_desc = tmp_rx + 1;
1351 }
1352 (--tmp_rx)->rdes3 = cpu_to_le32(db->first_rx_desc_dma);
1353 tmp_rx->next_rx_desc = db->first_rx_desc;
1354
1355 /* pre-allocate Rx buffer */
1356 allocate_rx_buffer(dev);
1357}
1358
1359
1360/*
1361 * Update CR6 value
1362 * Firstly stop ULI526X, then written value and start
1363 */
1364static void update_cr6(u32 cr6_data, void __iomem *ioaddr)
1365{
1366 uw32(DCR6, cr6_data);
1367 udelay(5);
1368}
1369
1370
1371/*
1372 * Send a setup frame for M5261/M5263
1373 * This setup frame initialize ULI526X address filter mode
1374 */
1375
1376#ifdef __BIG_ENDIAN
1377#define FLT_SHIFT 16
1378#else
1379#define FLT_SHIFT 0
1380#endif
1381
1382static void send_filter_frame(struct net_device *dev, int mc_cnt)
1383{
1384 struct uli526x_board_info *db = netdev_priv(dev);
1385 void __iomem *ioaddr = db->ioaddr;
1386 struct netdev_hw_addr *ha;
1387 struct tx_desc *txptr;
1388 u16 * addrptr;
1389 u32 * suptr;
1390 int i;
1391
1392 ULI526X_DBUG(0, "send_filter_frame()", 0);
1393
1394 txptr = db->tx_insert_ptr;
1395 suptr = (u32 *) txptr->tx_buf_ptr;
1396
1397 /* Node address */
1398 addrptr = (u16 *) dev->dev_addr;
1399 *suptr++ = addrptr[0] << FLT_SHIFT;
1400 *suptr++ = addrptr[1] << FLT_SHIFT;
1401 *suptr++ = addrptr[2] << FLT_SHIFT;
1402
1403 /* broadcast address */
1404 *suptr++ = 0xffff << FLT_SHIFT;
1405 *suptr++ = 0xffff << FLT_SHIFT;
1406 *suptr++ = 0xffff << FLT_SHIFT;
1407
1408 /* fit the multicast address */
1409 netdev_for_each_mc_addr(ha, dev) {
1410 addrptr = (u16 *) ha->addr;
1411 *suptr++ = addrptr[0] << FLT_SHIFT;
1412 *suptr++ = addrptr[1] << FLT_SHIFT;
1413 *suptr++ = addrptr[2] << FLT_SHIFT;
1414 }
1415
1416 for (i = netdev_mc_count(dev); i < 14; i++) {
1417 *suptr++ = 0xffff << FLT_SHIFT;
1418 *suptr++ = 0xffff << FLT_SHIFT;
1419 *suptr++ = 0xffff << FLT_SHIFT;
1420 }
1421
1422 /* prepare the setup frame */
1423 db->tx_insert_ptr = txptr->next_tx_desc;
1424 txptr->tdes1 = cpu_to_le32(0x890000c0);
1425
1426 /* Resource Check and Send the setup packet */
1427 if (db->tx_packet_cnt < TX_DESC_CNT) {
1428 /* Resource Empty */
1429 db->tx_packet_cnt++;
1430 txptr->tdes0 = cpu_to_le32(0x80000000);
1431 update_cr6(db->cr6_data | 0x2000, ioaddr);
1432 uw32(DCR1, 0x1); /* Issue Tx polling */
1433 update_cr6(db->cr6_data, ioaddr);
1434 dev->trans_start = jiffies;
1435 } else
1436 netdev_err(dev, "No Tx resource - Send_filter_frame!\n");
1437}
1438
1439
1440/*
1441 * Allocate rx buffer,
1442 * As possible as allocate maxiumn Rx buffer
1443 */
1444
1445static void allocate_rx_buffer(struct net_device *dev)
1446{
1447 struct uli526x_board_info *db = netdev_priv(dev);
1448 struct rx_desc *rxptr;
1449 struct sk_buff *skb;
1450
1451 rxptr = db->rx_insert_ptr;
1452
1453 while(db->rx_avail_cnt < RX_DESC_CNT) {
1454 skb = netdev_alloc_skb(dev, RX_ALLOC_SIZE);
1455 if (skb == NULL)
1456 break;
1457 rxptr->rx_skb_ptr = skb; /* FIXME (?) */
1458 rxptr->rdes2 = cpu_to_le32(pci_map_single(db->pdev,
1459 skb_tail_pointer(skb),
1460 RX_ALLOC_SIZE,
1461 PCI_DMA_FROMDEVICE));
1462 wmb();
1463 rxptr->rdes0 = cpu_to_le32(0x80000000);
1464 rxptr = rxptr->next_rx_desc;
1465 db->rx_avail_cnt++;
1466 }
1467
1468 db->rx_insert_ptr = rxptr;
1469}
1470
1471
1472/*
1473 * Read one word data from the serial ROM
1474 */
1475
1476static u16 read_srom_word(struct uli526x_board_info *db, int offset)
1477{
1478 void __iomem *ioaddr = db->ioaddr;
1479 u16 srom_data = 0;
1480 int i;
1481
1482 uw32(DCR9, CR9_SROM_READ);
1483 uw32(DCR9, CR9_SROM_READ | CR9_SRCS);
1484
1485 /* Send the Read Command 110b */
1486 srom_clk_write(db, SROM_DATA_1);
1487 srom_clk_write(db, SROM_DATA_1);
1488 srom_clk_write(db, SROM_DATA_0);
1489
1490 /* Send the offset */
1491 for (i = 5; i >= 0; i--) {
1492 srom_data = (offset & (1 << i)) ? SROM_DATA_1 : SROM_DATA_0;
1493 srom_clk_write(db, srom_data);
1494 }
1495
1496 uw32(DCR9, CR9_SROM_READ | CR9_SRCS);
1497
1498 for (i = 16; i > 0; i--) {
1499 uw32(DCR9, CR9_SROM_READ | CR9_SRCS | CR9_SRCLK);
1500 udelay(5);
1501 srom_data = (srom_data << 1) |
1502 ((ur32(DCR9) & CR9_CRDOUT) ? 1 : 0);
1503 uw32(DCR9, CR9_SROM_READ | CR9_SRCS);
1504 udelay(5);
1505 }
1506
1507 uw32(DCR9, CR9_SROM_READ);
1508 return srom_data;
1509}
1510
1511
1512/*
1513 * Auto sense the media mode
1514 */
1515
1516static u8 uli526x_sense_speed(struct uli526x_board_info * db)
1517{
1518 struct uli_phy_ops *phy = &db->phy;
1519 u8 ErrFlag = 0;
1520 u16 phy_mode;
1521
1522 phy_mode = phy->read(db, db->phy_addr, 1);
1523 phy_mode = phy->read(db, db->phy_addr, 1);
1524
1525 if ( (phy_mode & 0x24) == 0x24 ) {
1526
1527 phy_mode = ((phy->read(db, db->phy_addr, 5) & 0x01e0)<<7);
1528 if(phy_mode&0x8000)
1529 phy_mode = 0x8000;
1530 else if(phy_mode&0x4000)
1531 phy_mode = 0x4000;
1532 else if(phy_mode&0x2000)
1533 phy_mode = 0x2000;
1534 else
1535 phy_mode = 0x1000;
1536
1537 switch (phy_mode) {
1538 case 0x1000: db->op_mode = ULI526X_10MHF; break;
1539 case 0x2000: db->op_mode = ULI526X_10MFD; break;
1540 case 0x4000: db->op_mode = ULI526X_100MHF; break;
1541 case 0x8000: db->op_mode = ULI526X_100MFD; break;
1542 default: db->op_mode = ULI526X_10MHF; ErrFlag = 1; break;
1543 }
1544 } else {
1545 db->op_mode = ULI526X_10MHF;
1546 ULI526X_DBUG(0, "Link Failed :", phy_mode);
1547 ErrFlag = 1;
1548 }
1549
1550 return ErrFlag;
1551}
1552
1553
1554/*
1555 * Set 10/100 phyxcer capability
1556 * AUTO mode : phyxcer register4 is NIC capability
1557 * Force mode: phyxcer register4 is the force media
1558 */
1559
1560static void uli526x_set_phyxcer(struct uli526x_board_info *db)
1561{
1562 struct uli_phy_ops *phy = &db->phy;
1563 u16 phy_reg;
1564
1565 /* Phyxcer capability setting */
1566 phy_reg = phy->read(db, db->phy_addr, 4) & ~0x01e0;
1567
1568 if (db->media_mode & ULI526X_AUTO) {
1569 /* AUTO Mode */
1570 phy_reg |= db->PHY_reg4;
1571 } else {
1572 /* Force Mode */
1573 switch(db->media_mode) {
1574 case ULI526X_10MHF: phy_reg |= 0x20; break;
1575 case ULI526X_10MFD: phy_reg |= 0x40; break;
1576 case ULI526X_100MHF: phy_reg |= 0x80; break;
1577 case ULI526X_100MFD: phy_reg |= 0x100; break;
1578 }
1579
1580 }
1581
1582 /* Write new capability to Phyxcer Reg4 */
1583 if ( !(phy_reg & 0x01e0)) {
1584 phy_reg|=db->PHY_reg4;
1585 db->media_mode|=ULI526X_AUTO;
1586 }
1587 phy->write(db, db->phy_addr, 4, phy_reg);
1588
1589 /* Restart Auto-Negotiation */
1590 phy->write(db, db->phy_addr, 0, 0x1200);
1591 udelay(50);
1592}
1593
1594
1595/*
1596 * Process op-mode
1597 AUTO mode : PHY controller in Auto-negotiation Mode
1598 * Force mode: PHY controller in force mode with HUB
1599 * N-way force capability with SWITCH
1600 */
1601
1602static void uli526x_process_mode(struct uli526x_board_info *db)
1603{
1604 struct uli_phy_ops *phy = &db->phy;
1605 u16 phy_reg;
1606
1607 /* Full Duplex Mode Check */
1608 if (db->op_mode & 0x4)
1609 db->cr6_data |= CR6_FDM; /* Set Full Duplex Bit */
1610 else
1611 db->cr6_data &= ~CR6_FDM; /* Clear Full Duplex Bit */
1612
1613 update_cr6(db->cr6_data, db->ioaddr);
1614
1615 /* 10/100M phyxcer force mode need */
1616 if (!(db->media_mode & 0x8)) {
1617 /* Forece Mode */
1618 phy_reg = phy->read(db, db->phy_addr, 6);
1619 if (!(phy_reg & 0x1)) {
1620 /* parter without N-Way capability */
1621 phy_reg = 0x0;
1622 switch(db->op_mode) {
1623 case ULI526X_10MHF: phy_reg = 0x0; break;
1624 case ULI526X_10MFD: phy_reg = 0x100; break;
1625 case ULI526X_100MHF: phy_reg = 0x2000; break;
1626 case ULI526X_100MFD: phy_reg = 0x2100; break;
1627 }
1628 phy->write(db, db->phy_addr, 0, phy_reg);
1629 }
1630 }
1631}
1632
1633
1634/* M5261/M5263 Chip */
1635static void phy_writeby_cr9(struct uli526x_board_info *db, u8 phy_addr,
1636 u8 offset, u16 phy_data)
1637{
1638 u16 i;
1639
1640 /* Send 33 synchronization clock to Phy controller */
1641 for (i = 0; i < 35; i++)
1642 phy_write_1bit(db, PHY_DATA_1);
1643
1644 /* Send start command(01) to Phy */
1645 phy_write_1bit(db, PHY_DATA_0);
1646 phy_write_1bit(db, PHY_DATA_1);
1647
1648 /* Send write command(01) to Phy */
1649 phy_write_1bit(db, PHY_DATA_0);
1650 phy_write_1bit(db, PHY_DATA_1);
1651
1652 /* Send Phy address */
1653 for (i = 0x10; i > 0; i = i >> 1)
1654 phy_write_1bit(db, phy_addr & i ? PHY_DATA_1 : PHY_DATA_0);
1655
1656 /* Send register address */
1657 for (i = 0x10; i > 0; i = i >> 1)
1658 phy_write_1bit(db, offset & i ? PHY_DATA_1 : PHY_DATA_0);
1659
1660 /* written trasnition */
1661 phy_write_1bit(db, PHY_DATA_1);
1662 phy_write_1bit(db, PHY_DATA_0);
1663
1664 /* Write a word data to PHY controller */
1665 for (i = 0x8000; i > 0; i >>= 1)
1666 phy_write_1bit(db, phy_data & i ? PHY_DATA_1 : PHY_DATA_0);
1667}
1668
1669static u16 phy_readby_cr9(struct uli526x_board_info *db, u8 phy_addr, u8 offset)
1670{
1671 u16 phy_data;
1672 int i;
1673
1674 /* Send 33 synchronization clock to Phy controller */
1675 for (i = 0; i < 35; i++)
1676 phy_write_1bit(db, PHY_DATA_1);
1677
1678 /* Send start command(01) to Phy */
1679 phy_write_1bit(db, PHY_DATA_0);
1680 phy_write_1bit(db, PHY_DATA_1);
1681
1682 /* Send read command(10) to Phy */
1683 phy_write_1bit(db, PHY_DATA_1);
1684 phy_write_1bit(db, PHY_DATA_0);
1685
1686 /* Send Phy address */
1687 for (i = 0x10; i > 0; i = i >> 1)
1688 phy_write_1bit(db, phy_addr & i ? PHY_DATA_1 : PHY_DATA_0);
1689
1690 /* Send register address */
1691 for (i = 0x10; i > 0; i = i >> 1)
1692 phy_write_1bit(db, offset & i ? PHY_DATA_1 : PHY_DATA_0);
1693
1694 /* Skip transition state */
1695 phy_read_1bit(db);
1696
1697 /* read 16bit data */
1698 for (phy_data = 0, i = 0; i < 16; i++) {
1699 phy_data <<= 1;
1700 phy_data |= phy_read_1bit(db);
1701 }
1702
1703 return phy_data;
1704}
1705
1706static u16 phy_readby_cr10(struct uli526x_board_info *db, u8 phy_addr,
1707 u8 offset)
1708{
1709 void __iomem *ioaddr = db->ioaddr;
1710 u32 cr10_value = phy_addr;
1711
1712 cr10_value = (cr10_value << 5) + offset;
1713 cr10_value = (cr10_value << 16) + 0x08000000;
1714 uw32(DCR10, cr10_value);
1715 udelay(1);
1716 while (1) {
1717 cr10_value = ur32(DCR10);
1718 if (cr10_value & 0x10000000)
1719 break;
1720 }
1721 return cr10_value & 0x0ffff;
1722}
1723
1724static void phy_writeby_cr10(struct uli526x_board_info *db, u8 phy_addr,
1725 u8 offset, u16 phy_data)
1726{
1727 void __iomem *ioaddr = db->ioaddr;
1728 u32 cr10_value = phy_addr;
1729
1730 cr10_value = (cr10_value << 5) + offset;
1731 cr10_value = (cr10_value << 16) + 0x04000000 + phy_data;
1732 uw32(DCR10, cr10_value);
1733 udelay(1);
1734}
1735/*
1736 * Write one bit data to Phy Controller
1737 */
1738
1739static void phy_write_1bit(struct uli526x_board_info *db, u32 data)
1740{
1741 void __iomem *ioaddr = db->ioaddr;
1742
1743 uw32(DCR9, data); /* MII Clock Low */
1744 udelay(1);
1745 uw32(DCR9, data | MDCLKH); /* MII Clock High */
1746 udelay(1);
1747 uw32(DCR9, data); /* MII Clock Low */
1748 udelay(1);
1749}
1750
1751
1752/*
1753 * Read one bit phy data from PHY controller
1754 */
1755
1756static u16 phy_read_1bit(struct uli526x_board_info *db)
1757{
1758 void __iomem *ioaddr = db->ioaddr;
1759 u16 phy_data;
1760
1761 uw32(DCR9, 0x50000);
1762 udelay(1);
1763 phy_data = (ur32(DCR9) >> 19) & 0x1;
1764 uw32(DCR9, 0x40000);
1765 udelay(1);
1766
1767 return phy_data;
1768}
1769
1770
1771static DEFINE_PCI_DEVICE_TABLE(uli526x_pci_tbl) = {
1772 { 0x10B9, 0x5261, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_ULI5261_ID },
1773 { 0x10B9, 0x5263, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_ULI5263_ID },
1774 { 0, }
1775};
1776MODULE_DEVICE_TABLE(pci, uli526x_pci_tbl);
1777
1778
1779static struct pci_driver uli526x_driver = {
1780 .name = "uli526x",
1781 .id_table = uli526x_pci_tbl,
1782 .probe = uli526x_init_one,
1783 .remove = uli526x_remove_one,
1784 .suspend = uli526x_suspend,
1785 .resume = uli526x_resume,
1786};
1787
1788MODULE_AUTHOR("Peer Chen, peer.chen@uli.com.tw");
1789MODULE_DESCRIPTION("ULi M5261/M5263 fast ethernet driver");
1790MODULE_LICENSE("GPL");
1791
1792module_param(debug, int, 0644);
1793module_param(mode, int, 0);
1794module_param(cr6set, int, 0);
1795MODULE_PARM_DESC(debug, "ULi M5261/M5263 enable debugging (0-1)");
1796MODULE_PARM_DESC(mode, "ULi M5261/M5263: Bit 0: 10/100Mbps, bit 2: duplex, bit 8: HomePNA");
1797
1798/* Description:
1799 * when user used insmod to add module, system invoked init_module()
1800 * to register the services.
1801 */
1802
1803static int __init uli526x_init_module(void)
1804{
1805
1806 pr_info("%s\n", version);
1807 printed_version = 1;
1808
1809 ULI526X_DBUG(0, "init_module() ", debug);
1810
1811 if (debug)
1812 uli526x_debug = debug; /* set debug flag */
1813 if (cr6set)
1814 uli526x_cr6_user_set = cr6set;
1815
1816 switch (mode) {
1817 case ULI526X_10MHF:
1818 case ULI526X_100MHF:
1819 case ULI526X_10MFD:
1820 case ULI526X_100MFD:
1821 uli526x_media_mode = mode;
1822 break;
1823 default:
1824 uli526x_media_mode = ULI526X_AUTO;
1825 break;
1826 }
1827
1828 return pci_register_driver(&uli526x_driver);
1829}
1830
1831
1832/*
1833 * Description:
1834 * when user used rmmod to delete module, system invoked clean_module()
1835 * to un-register all registered services.
1836 */
1837
1838static void __exit uli526x_cleanup_module(void)
1839{
1840 ULI526X_DBUG(0, "uli526x_clean_module() ", debug);
1841 pci_unregister_driver(&uli526x_driver);
1842}
1843
1844module_init(uli526x_init_module);
1845module_exit(uli526x_cleanup_module);