]> git.ipfire.org Git - thirdparty/kernel/stable.git/blob - drivers/net/ethernet/dec/tulip/uli526x.c
projects / thirdparty / kernel / stable.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
[thirdparty/kernel/stable.git] / drivers / net / ethernet / dec / tulip / uli526x.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3
4
5 */
6
7 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
8
9 #define DRV_NAME "uli526x"
10 #define DRV_VERSION "0.9.3"
11 #define DRV_RELDATE "2005-7-29"
12
13 #include <linux/module.h>
14
15 #include <linux/kernel.h>
16 #include <linux/string.h>
17 #include <linux/timer.h>
18 #include <linux/errno.h>
19 #include <linux/ioport.h>
20 #include <linux/interrupt.h>
21 #include <linux/pci.h>
22 #include <linux/init.h>
23 #include <linux/netdevice.h>
24 #include <linux/etherdevice.h>
25 #include <linux/ethtool.h>
26 #include <linux/skbuff.h>
27 #include <linux/delay.h>
28 #include <linux/spinlock.h>
29 #include <linux/dma-mapping.h>
30 #include <linux/bitops.h>
31
32 #include <asm/processor.h>
33 #include <asm/io.h>
34 #include <asm/dma.h>
35 #include <linux/uaccess.h>
36
37 #define uw32(reg, val) iowrite32(val, ioaddr + (reg))
38 #define ur32(reg) ioread32(ioaddr + (reg))
39
40 /* Board/System/Debug information/definition ---------------- */
41 #define PCI_ULI5261_ID 0x526110B9 /* ULi M5261 ID*/
42 #define PCI_ULI5263_ID 0x526310B9 /* ULi M5263 ID*/
43
44 #define ULI526X_IO_SIZE 0x100
45 #define TX_DESC_CNT 0x20 /* Allocated Tx descriptors */
46 #define RX_DESC_CNT 0x30 /* Allocated Rx descriptors */
47 #define TX_FREE_DESC_CNT (TX_DESC_CNT - 2) /* Max TX packet count */
48 #define TX_WAKE_DESC_CNT (TX_DESC_CNT - 3) /* TX wakeup count */
49 #define DESC_ALL_CNT (TX_DESC_CNT + RX_DESC_CNT)
50 #define TX_BUF_ALLOC 0x600
51 #define RX_ALLOC_SIZE 0x620
52 #define ULI526X_RESET 1
53 #define CR0_DEFAULT 0
54 #define CR6_DEFAULT 0x22200000
55 #define CR7_DEFAULT 0x180c1
56 #define CR15_DEFAULT 0x06 /* TxJabber RxWatchdog */
57 #define TDES0_ERR_MASK 0x4302 /* TXJT, LC, EC, FUE */
58 #define MAX_PACKET_SIZE 1514
59 #define ULI5261_MAX_MULTICAST 14
60 #define RX_COPY_SIZE 100
61 #define MAX_CHECK_PACKET 0x8000
62
63 #define ULI526X_10MHF 0
64 #define ULI526X_100MHF 1
65 #define ULI526X_10MFD 4
66 #define ULI526X_100MFD 5
67 #define ULI526X_AUTO 8
68
69 #define ULI526X_TXTH_72 0x400000 /* TX TH 72 byte */
70 #define ULI526X_TXTH_96 0x404000 /* TX TH 96 byte */
71 #define ULI526X_TXTH_128 0x0000 /* TX TH 128 byte */
72 #define ULI526X_TXTH_256 0x4000 /* TX TH 256 byte */
73 #define ULI526X_TXTH_512 0x8000 /* TX TH 512 byte */
74 #define ULI526X_TXTH_1K 0xC000 /* TX TH 1K byte */
75
76 #define ULI526X_TIMER_WUT (jiffies + HZ * 1)/* timer wakeup time : 1 second */
77 #define ULI526X_TX_TIMEOUT ((16*HZ)/2) /* tx packet time-out time 8 s" */
78 #define ULI526X_TX_KICK (4*HZ/2) /* tx packet Kick-out time 2 s" */
79
80 #define ULI526X_DBUG(dbug_now, msg, value) \
81 do { \
82 if (uli526x_debug || (dbug_now)) \
83 pr_err("%s %lx\n", (msg), (long) (value)); \
84 } while (0)
85
86 #define SHOW_MEDIA_TYPE(mode) \
87 pr_err("Change Speed to %sMhz %s duplex\n", \
88 mode & 1 ? "100" : "10", \
89 mode & 4 ? "full" : "half");
90
91
92 /* CR9 definition: SROM/MII */
93 #define CR9_SROM_READ 0x4800
94 #define CR9_SRCS 0x1
95 #define CR9_SRCLK 0x2
96 #define CR9_CRDOUT 0x8
97 #define SROM_DATA_0 0x0
98 #define SROM_DATA_1 0x4
99 #define PHY_DATA_1 0x20000
100 #define PHY_DATA_0 0x00000
101 #define MDCLKH 0x10000
102
103 #define PHY_POWER_DOWN 0x800
104
105 #define SROM_V41_CODE 0x14
106
107 /* Structure/enum declaration ------------------------------- */
108 struct tx_desc {
109 __le32 tdes0, tdes1, tdes2, tdes3; /* Data for the card */
110 char *tx_buf_ptr; /* Data for us */
111 struct tx_desc *next_tx_desc;
112 } __attribute__(( aligned(32) ));
113
114 struct rx_desc {
115 __le32 rdes0, rdes1, rdes2, rdes3; /* Data for the card */
116 struct sk_buff *rx_skb_ptr; /* Data for us */
117 struct rx_desc *next_rx_desc;
118 } __attribute__(( aligned(32) ));
119
120 struct uli526x_board_info {
121 struct uli_phy_ops {
122 void (*write)(struct uli526x_board_info *, u8, u8, u16);
123 u16 (*read)(struct uli526x_board_info *, u8, u8);
124 } phy;
125 struct net_device *next_dev; /* next device */
126 struct pci_dev *pdev; /* PCI device */
127 spinlock_t lock;
128
129 void __iomem *ioaddr; /* I/O base address */
130 u32 cr0_data;
131 u32 cr5_data;
132 u32 cr6_data;
133 u32 cr7_data;
134 u32 cr15_data;
135
136 /* pointer for memory physical address */
137 dma_addr_t buf_pool_dma_ptr; /* Tx buffer pool memory */
138 dma_addr_t buf_pool_dma_start; /* Tx buffer pool align dword */
139 dma_addr_t desc_pool_dma_ptr; /* descriptor pool memory */
140 dma_addr_t first_tx_desc_dma;
141 dma_addr_t first_rx_desc_dma;
142
143 /* descriptor pointer */
144 unsigned char *buf_pool_ptr; /* Tx buffer pool memory */
145 unsigned char *buf_pool_start; /* Tx buffer pool align dword */
146 unsigned char *desc_pool_ptr; /* descriptor pool memory */
147 struct tx_desc *first_tx_desc;
148 struct tx_desc *tx_insert_ptr;
149 struct tx_desc *tx_remove_ptr;
150 struct rx_desc *first_rx_desc;
151 struct rx_desc *rx_insert_ptr;
152 struct rx_desc *rx_ready_ptr; /* packet come pointer */
153 unsigned long tx_packet_cnt; /* transmitted packet count */
154 unsigned long rx_avail_cnt; /* available rx descriptor count */
155 unsigned long interval_rx_cnt; /* rx packet count a callback time */
156
157 u16 dbug_cnt;
158 u16 NIC_capability; /* NIC media capability */
159 u16 PHY_reg4; /* Saved Phyxcer register 4 value */
160
161 u8 media_mode; /* user specify media mode */
162 u8 op_mode; /* real work media mode */
163 u8 phy_addr;
164 u8 link_failed; /* Ever link failed */
165 u8 wait_reset; /* Hardware failed, need to reset */
166 struct timer_list timer;
167
168 /* Driver defined statistic counter */
169 unsigned long tx_fifo_underrun;
170 unsigned long tx_loss_carrier;
171 unsigned long tx_no_carrier;
172 unsigned long tx_late_collision;
173 unsigned long tx_excessive_collision;
174 unsigned long tx_jabber_timeout;
175 unsigned long reset_count;
176 unsigned long reset_cr8;
177 unsigned long reset_fatal;
178 unsigned long reset_TXtimeout;
179
180 /* NIC SROM data */
181 unsigned char srom[128];
182 u8 init;
183 };
184
185 enum uli526x_offsets {
186 DCR0 = 0x00, DCR1 = 0x08, DCR2 = 0x10, DCR3 = 0x18, DCR4 = 0x20,
187 DCR5 = 0x28, DCR6 = 0x30, DCR7 = 0x38, DCR8 = 0x40, DCR9 = 0x48,
188 DCR10 = 0x50, DCR11 = 0x58, DCR12 = 0x60, DCR13 = 0x68, DCR14 = 0x70,
189 DCR15 = 0x78
190 };
191
192 enum uli526x_CR6_bits {
193 CR6_RXSC = 0x2, CR6_PBF = 0x8, CR6_PM = 0x40, CR6_PAM = 0x80,
194 CR6_FDM = 0x200, CR6_TXSC = 0x2000, CR6_STI = 0x100000,
195 CR6_SFT = 0x200000, CR6_RXA = 0x40000000, CR6_NO_PURGE = 0x20000000
196 };
197
198 /* Global variable declaration ----------------------------- */
199 static int printed_version;
200 static const char version[] =
201 "ULi M5261/M5263 net driver, version " DRV_VERSION " (" DRV_RELDATE ")";
202
203 static int uli526x_debug;
204 static unsigned char uli526x_media_mode = ULI526X_AUTO;
205 static u32 uli526x_cr6_user_set;
206
207 /* For module input parameter */
208 static int debug;
209 static u32 cr6set;
210 static int mode = 8;
211
212 /* function declaration ------------------------------------- */
213 static int uli526x_open(struct net_device *);
214 static netdev_tx_t uli526x_start_xmit(struct sk_buff *,
215 struct net_device *);
216 static int uli526x_stop(struct net_device *);
217 static void uli526x_set_filter_mode(struct net_device *);
218 static const struct ethtool_ops netdev_ethtool_ops;
219 static u16 read_srom_word(struct uli526x_board_info *, int);
220 static irqreturn_t uli526x_interrupt(int, void *);
221 #ifdef CONFIG_NET_POLL_CONTROLLER
222 static void uli526x_poll(struct net_device *dev);
223 #endif
224 static void uli526x_descriptor_init(struct net_device *, void __iomem *);
225 static void allocate_rx_buffer(struct net_device *);
226 static void update_cr6(u32, void __iomem *);
227 static void send_filter_frame(struct net_device *, int);
228 static u16 phy_readby_cr9(struct uli526x_board_info *, u8, u8);
229 static u16 phy_readby_cr10(struct uli526x_board_info *, u8, u8);
230 static void phy_writeby_cr9(struct uli526x_board_info *, u8, u8, u16);
231 static void phy_writeby_cr10(struct uli526x_board_info *, u8, u8, u16);
232 static void phy_write_1bit(struct uli526x_board_info *db, u32);
233 static u16 phy_read_1bit(struct uli526x_board_info *db);
234 static u8 uli526x_sense_speed(struct uli526x_board_info *);
235 static void uli526x_process_mode(struct uli526x_board_info *);
236 static void uli526x_timer(struct timer_list *t);
237 static void uli526x_rx_packet(struct net_device *, struct uli526x_board_info *);
238 static void uli526x_free_tx_pkt(struct net_device *, struct uli526x_board_info *);
239 static void uli526x_reuse_skb(struct uli526x_board_info *, struct sk_buff *);
240 static void uli526x_dynamic_reset(struct net_device *);
241 static void uli526x_free_rxbuffer(struct uli526x_board_info *);
242 static void uli526x_init(struct net_device *);
243 static void uli526x_set_phyxcer(struct uli526x_board_info *);
244
245 static void srom_clk_write(struct uli526x_board_info *db, u32 data)
246 {
247 void __iomem *ioaddr = db->ioaddr;
248
249 uw32(DCR9, data | CR9_SROM_READ | CR9_SRCS);
250 udelay(5);
251 uw32(DCR9, data | CR9_SROM_READ | CR9_SRCS | CR9_SRCLK);
252 udelay(5);
253 uw32(DCR9, data | CR9_SROM_READ | CR9_SRCS);
254 udelay(5);
255 }
256
257 /* ULI526X network board routine ---------------------------- */
258
259 static const struct net_device_ops netdev_ops = {
260 .ndo_open = uli526x_open,
261 .ndo_stop = uli526x_stop,
262 .ndo_start_xmit = uli526x_start_xmit,
263 .ndo_set_rx_mode = uli526x_set_filter_mode,
264 .ndo_set_mac_address = eth_mac_addr,
265 .ndo_validate_addr = eth_validate_addr,
266 #ifdef CONFIG_NET_POLL_CONTROLLER
267 .ndo_poll_controller = uli526x_poll,
268 #endif
269 };
270
271 /*
272 * Search ULI526X board, allocate space and register it
273 */
274
275 static int uli526x_init_one(struct pci_dev *pdev,
276 const struct pci_device_id *ent)
277 {
278 struct uli526x_board_info *db; /* board information structure */
279 struct net_device *dev;
280 void __iomem *ioaddr;
281 int i, err;
282
283 ULI526X_DBUG(0, "uli526x_init_one()", 0);
284
285 if (!printed_version++)
286 pr_info("%s\n", version);
287
288 /* Init network device */
289 dev = alloc_etherdev(sizeof(*db));
290 if (dev == NULL)
291 return -ENOMEM;
292 SET_NETDEV_DEV(dev, &pdev->dev);
293
294 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
295 pr_warn("32-bit PCI DMA not available\n");
296 err = -ENODEV;
297 goto err_out_free;
298 }
299
300 /* Enable Master/IO access, Disable memory access */
301 err = pci_enable_device(pdev);
302 if (err)
303 goto err_out_free;
304
305 if (!pci_resource_start(pdev, 0)) {
306 pr_err("I/O base is zero\n");
307 err = -ENODEV;
308 goto err_out_disable;
309 }
310
311 if (pci_resource_len(pdev, 0) < (ULI526X_IO_SIZE) ) {
312 pr_err("Allocated I/O size too small\n");
313 err = -ENODEV;
314 goto err_out_disable;
315 }
316
317 err = pci_request_regions(pdev, DRV_NAME);
318 if (err < 0) {
319 pr_err("Failed to request PCI regions\n");
320 goto err_out_disable;
321 }
322
323 /* Init system & device */
324 db = netdev_priv(dev);
325
326 /* Allocate Tx/Rx descriptor memory */
327 err = -ENOMEM;
328
329 db->desc_pool_ptr = pci_alloc_consistent(pdev, sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20, &db->desc_pool_dma_ptr);
330 if (!db->desc_pool_ptr)
331 goto err_out_release;
332
333 db->buf_pool_ptr = pci_alloc_consistent(pdev, TX_BUF_ALLOC * TX_DESC_CNT + 4, &db->buf_pool_dma_ptr);
334 if (!db->buf_pool_ptr)
335 goto err_out_free_tx_desc;
336
337 db->first_tx_desc = (struct tx_desc *) db->desc_pool_ptr;
338 db->first_tx_desc_dma = db->desc_pool_dma_ptr;
339 db->buf_pool_start = db->buf_pool_ptr;
340 db->buf_pool_dma_start = db->buf_pool_dma_ptr;
341
342 switch (ent->driver_data) {
343 case PCI_ULI5263_ID:
344 db->phy.write = phy_writeby_cr10;
345 db->phy.read = phy_readby_cr10;
346 break;
347 default:
348 db->phy.write = phy_writeby_cr9;
349 db->phy.read = phy_readby_cr9;
350 break;
351 }
352
353 /* IO region. */
354 ioaddr = pci_iomap(pdev, 0, 0);
355 if (!ioaddr)
356 goto err_out_free_tx_buf;
357
358 db->ioaddr = ioaddr;
359 db->pdev = pdev;
360 db->init = 1;
361
362 pci_set_drvdata(pdev, dev);
363
364 /* Register some necessary functions */
365 dev->netdev_ops = &netdev_ops;
366 dev->ethtool_ops = &netdev_ethtool_ops;
367
368 spin_lock_init(&db->lock);
369
370
371 /* read 64 word srom data */
372 for (i = 0; i < 64; i++)
373 ((__le16 *) db->srom)[i] = cpu_to_le16(read_srom_word(db, i));
374
375 /* Set Node address */
376 if(((u16 *) db->srom)[0] == 0xffff || ((u16 *) db->srom)[0] == 0) /* SROM absent, so read MAC address from ID Table */
377 {
378 uw32(DCR0, 0x10000); //Diagnosis mode
379 uw32(DCR13, 0x1c0); //Reset dianostic pointer port
380 uw32(DCR14, 0); //Clear reset port
381 uw32(DCR14, 0x10); //Reset ID Table pointer
382 uw32(DCR14, 0); //Clear reset port
383 uw32(DCR13, 0); //Clear CR13
384 uw32(DCR13, 0x1b0); //Select ID Table access port
385 //Read MAC address from CR14
386 for (i = 0; i < 6; i++)
387 dev->dev_addr[i] = ur32(DCR14);
388 //Read end
389 uw32(DCR13, 0); //Clear CR13
390 uw32(DCR0, 0); //Clear CR0
391 udelay(10);
392 }
393 else /*Exist SROM*/
394 {
395 for (i = 0; i < 6; i++)
396 dev->dev_addr[i] = db->srom[20 + i];
397 }
398 err = register_netdev (dev);
399 if (err)
400 goto err_out_unmap;
401
402 netdev_info(dev, "ULi M%04lx at pci%s, %pM, irq %d\n",
403 ent->driver_data >> 16, pci_name(pdev),
404 dev->dev_addr, pdev->irq);
405
406 pci_set_master(pdev);
407
408 return 0;
409
410 err_out_unmap:
411 pci_iounmap(pdev, db->ioaddr);
412 err_out_free_tx_buf:
413 pci_free_consistent(pdev, TX_BUF_ALLOC * TX_DESC_CNT + 4,
414 db->buf_pool_ptr, db->buf_pool_dma_ptr);
415 err_out_free_tx_desc:
416 pci_free_consistent(pdev, sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20,
417 db->desc_pool_ptr, db->desc_pool_dma_ptr);
418 err_out_release:
419 pci_release_regions(pdev);
420 err_out_disable:
421 pci_disable_device(pdev);
422 err_out_free:
423 free_netdev(dev);
424
425 return err;
426 }
427
428
429 static void uli526x_remove_one(struct pci_dev *pdev)
430 {
431 struct net_device *dev = pci_get_drvdata(pdev);
432 struct uli526x_board_info *db = netdev_priv(dev);
433
434 unregister_netdev(dev);
435 pci_iounmap(pdev, db->ioaddr);
436 pci_free_consistent(db->pdev, sizeof(struct tx_desc) *
437 DESC_ALL_CNT + 0x20, db->desc_pool_ptr,
438 db->desc_pool_dma_ptr);
439 pci_free_consistent(db->pdev, TX_BUF_ALLOC * TX_DESC_CNT + 4,
440 db->buf_pool_ptr, db->buf_pool_dma_ptr);
441 pci_release_regions(pdev);
442 pci_disable_device(pdev);
443 free_netdev(dev);
444 }
445
446
447 /*
448 * Open the interface.
449 * The interface is opened whenever "ifconfig" activates it.
450 */
451
452 static int uli526x_open(struct net_device *dev)
453 {
454 int ret;
455 struct uli526x_board_info *db = netdev_priv(dev);
456
457 ULI526X_DBUG(0, "uli526x_open", 0);
458
459 /* system variable init */
460 db->cr6_data = CR6_DEFAULT | uli526x_cr6_user_set;
461 db->tx_packet_cnt = 0;
462 db->rx_avail_cnt = 0;
463 db->link_failed = 1;
464 netif_carrier_off(dev);
465 db->wait_reset = 0;
466
467 db->NIC_capability = 0xf; /* All capability*/
468 db->PHY_reg4 = 0x1e0;
469
470 /* CR6 operation mode decision */
471 db->cr6_data |= ULI526X_TXTH_256;
472 db->cr0_data = CR0_DEFAULT;
473
474 /* Initialize ULI526X board */
475 uli526x_init(dev);
476
477 ret = request_irq(db->pdev->irq, uli526x_interrupt, IRQF_SHARED,
478 dev->name, dev);
479 if (ret)
480 return ret;
481
482 /* Active System Interface */
483 netif_wake_queue(dev);
484
485 /* set and active a timer process */
486 timer_setup(&db->timer, uli526x_timer, 0);
487 db->timer.expires = ULI526X_TIMER_WUT + HZ * 2;
488 add_timer(&db->timer);
489
490 return 0;
491 }
492
493
494 /* Initialize ULI526X board
495 * Reset ULI526X board
496 * Initialize TX/Rx descriptor chain structure
497 * Send the set-up frame
498 * Enable Tx/Rx machine
499 */
500
501 static void uli526x_init(struct net_device *dev)
502 {
503 struct uli526x_board_info *db = netdev_priv(dev);
504 struct uli_phy_ops *phy = &db->phy;
505 void __iomem *ioaddr = db->ioaddr;
506 u8 phy_tmp;
507 u8 timeout;
508 u16 phy_reg_reset;
509
510
511 ULI526X_DBUG(0, "uli526x_init()", 0);
512
513 /* Reset M526x MAC controller */
514 uw32(DCR0, ULI526X_RESET); /* RESET MAC */
515 udelay(100);
516 uw32(DCR0, db->cr0_data);
517 udelay(5);
518
519 /* Phy addr : In some boards,M5261/M5263 phy address != 1 */
520 db->phy_addr = 1;
521 for (phy_tmp = 0; phy_tmp < 32; phy_tmp++) {
522 u16 phy_value;
523
524 phy_value = phy->read(db, phy_tmp, 3); //peer add
525 if (phy_value != 0xffff && phy_value != 0) {
526 db->phy_addr = phy_tmp;
527 break;
528 }
529 }
530
531 if (phy_tmp == 32)
532 pr_warn("Can not find the phy address!!!\n");
533 /* Parser SROM and media mode */
534 db->media_mode = uli526x_media_mode;
535
536 /* phyxcer capability setting */
537 phy_reg_reset = phy->read(db, db->phy_addr, 0);
538 phy_reg_reset = (phy_reg_reset | 0x8000);
539 phy->write(db, db->phy_addr, 0, phy_reg_reset);
540
541 /* See IEEE 802.3-2002.pdf (Section 2, Chapter "22.2.4 Management
542 * functions") or phy data sheet for details on phy reset
543 */
544 udelay(500);
545 timeout = 10;
546 while (timeout-- && phy->read(db, db->phy_addr, 0) & 0x8000)
547 udelay(100);
548
549 /* Process Phyxcer Media Mode */
550 uli526x_set_phyxcer(db);
551
552 /* Media Mode Process */
553 if ( !(db->media_mode & ULI526X_AUTO) )
554 db->op_mode = db->media_mode; /* Force Mode */
555
556 /* Initialize Transmit/Receive descriptor and CR3/4 */
557 uli526x_descriptor_init(dev, ioaddr);
558
559 /* Init CR6 to program M526X operation */
560 update_cr6(db->cr6_data, ioaddr);
561
562 /* Send setup frame */
563 send_filter_frame(dev, netdev_mc_count(dev)); /* M5261/M5263 */
564
565 /* Init CR7, interrupt active bit */
566 db->cr7_data = CR7_DEFAULT;
567 uw32(DCR7, db->cr7_data);
568
569 /* Init CR15, Tx jabber and Rx watchdog timer */
570 uw32(DCR15, db->cr15_data);
571
572 /* Enable ULI526X Tx/Rx function */
573 db->cr6_data |= CR6_RXSC | CR6_TXSC;
574 update_cr6(db->cr6_data, ioaddr);
575 }
576
577
578 /*
579 * Hardware start transmission.
580 * Send a packet to media from the upper layer.
581 */
582
583 static netdev_tx_t uli526x_start_xmit(struct sk_buff *skb,
584 struct net_device *dev)
585 {
586 struct uli526x_board_info *db = netdev_priv(dev);
587 void __iomem *ioaddr = db->ioaddr;
588 struct tx_desc *txptr;
589 unsigned long flags;
590
591 ULI526X_DBUG(0, "uli526x_start_xmit", 0);
592
593 /* Resource flag check */
594 netif_stop_queue(dev);
595
596 /* Too large packet check */
597 if (skb->len > MAX_PACKET_SIZE) {
598 netdev_err(dev, "big packet = %d\n", (u16)skb->len);
599 dev_kfree_skb_any(skb);
600 return NETDEV_TX_OK;
601 }
602
603 spin_lock_irqsave(&db->lock, flags);
604
605 /* No Tx resource check, it never happen nromally */
606 if (db->tx_packet_cnt >= TX_FREE_DESC_CNT) {
607 spin_unlock_irqrestore(&db->lock, flags);
608 netdev_err(dev, "No Tx resource %ld\n", db->tx_packet_cnt);
609 return NETDEV_TX_BUSY;
610 }
611
612 /* Disable NIC interrupt */
613 uw32(DCR7, 0);
614
615 /* transmit this packet */
616 txptr = db->tx_insert_ptr;
617 skb_copy_from_linear_data(skb, txptr->tx_buf_ptr, skb->len);
618 txptr->tdes1 = cpu_to_le32(0xe1000000 | skb->len);
619
620 /* Point to next transmit free descriptor */
621 db->tx_insert_ptr = txptr->next_tx_desc;
622
623 /* Transmit Packet Process */
624 if (db->tx_packet_cnt < TX_DESC_CNT) {
625 txptr->tdes0 = cpu_to_le32(0x80000000); /* Set owner bit */
626 db->tx_packet_cnt++; /* Ready to send */
627 uw32(DCR1, 0x1); /* Issue Tx polling */
628 netif_trans_update(dev); /* saved time stamp */
629 }
630
631 /* Tx resource check */
632 if ( db->tx_packet_cnt < TX_FREE_DESC_CNT )
633 netif_wake_queue(dev);
634
635 /* Restore CR7 to enable interrupt */
636 spin_unlock_irqrestore(&db->lock, flags);
637 uw32(DCR7, db->cr7_data);
638
639 /* free this SKB */
640 dev_consume_skb_any(skb);
641
642 return NETDEV_TX_OK;
643 }
644
645
646 /*
647 * Stop the interface.
648 * The interface is stopped when it is brought.
649 */
650
651 static int uli526x_stop(struct net_device *dev)
652 {
653 struct uli526x_board_info *db = netdev_priv(dev);
654 void __iomem *ioaddr = db->ioaddr;
655
656 /* disable system */
657 netif_stop_queue(dev);
658
659 /* deleted timer */
660 del_timer_sync(&db->timer);
661
662 /* Reset & stop ULI526X board */
663 uw32(DCR0, ULI526X_RESET);
664 udelay(5);
665 db->phy.write(db, db->phy_addr, 0, 0x8000);
666
667 /* free interrupt */
668 free_irq(db->pdev->irq, dev);
669
670 /* free allocated rx buffer */
671 uli526x_free_rxbuffer(db);
672
673 return 0;
674 }
675
676
677 /*
678 * M5261/M5263 insterrupt handler
679 * receive the packet to upper layer, free the transmitted packet
680 */
681
682 static irqreturn_t uli526x_interrupt(int irq, void *dev_id)
683 {
684 struct net_device *dev = dev_id;
685 struct uli526x_board_info *db = netdev_priv(dev);
686 void __iomem *ioaddr = db->ioaddr;
687 unsigned long flags;
688
689 spin_lock_irqsave(&db->lock, flags);
690 uw32(DCR7, 0);
691
692 /* Got ULI526X status */
693 db->cr5_data = ur32(DCR5);
694 uw32(DCR5, db->cr5_data);
695 if ( !(db->cr5_data & 0x180c1) ) {
696 /* Restore CR7 to enable interrupt mask */
697 uw32(DCR7, db->cr7_data);
698 spin_unlock_irqrestore(&db->lock, flags);
699 return IRQ_HANDLED;
700 }
701
702 /* Check system status */
703 if (db->cr5_data & 0x2000) {
704 /* system bus error happen */
705 ULI526X_DBUG(1, "System bus error happen. CR5=", db->cr5_data);
706 db->reset_fatal++;
707 db->wait_reset = 1; /* Need to RESET */
708 spin_unlock_irqrestore(&db->lock, flags);
709 return IRQ_HANDLED;
710 }
711
712 /* Received the coming packet */
713 if ( (db->cr5_data & 0x40) && db->rx_avail_cnt )
714 uli526x_rx_packet(dev, db);
715
716 /* reallocate rx descriptor buffer */
717 if (db->rx_avail_cnt<RX_DESC_CNT)
718 allocate_rx_buffer(dev);
719
720 /* Free the transmitted descriptor */
721 if ( db->cr5_data & 0x01)
722 uli526x_free_tx_pkt(dev, db);
723
724 /* Restore CR7 to enable interrupt mask */
725 uw32(DCR7, db->cr7_data);
726
727 spin_unlock_irqrestore(&db->lock, flags);
728 return IRQ_HANDLED;
729 }
730
731 #ifdef CONFIG_NET_POLL_CONTROLLER
732 static void uli526x_poll(struct net_device *dev)
733 {
734 struct uli526x_board_info *db = netdev_priv(dev);
735
736 /* ISR grabs the irqsave lock, so this should be safe */
737 uli526x_interrupt(db->pdev->irq, dev);
738 }
739 #endif
740
741 /*
742 * Free TX resource after TX complete
743 */
744
745 static void uli526x_free_tx_pkt(struct net_device *dev,
746 struct uli526x_board_info * db)
747 {
748 struct tx_desc *txptr;
749 u32 tdes0;
750
751 txptr = db->tx_remove_ptr;
752 while(db->tx_packet_cnt) {
753 tdes0 = le32_to_cpu(txptr->tdes0);
754 if (tdes0 & 0x80000000)
755 break;
756
757 /* A packet sent completed */
758 db->tx_packet_cnt--;
759 dev->stats.tx_packets++;
760
761 /* Transmit statistic counter */
762 if ( tdes0 != 0x7fffffff ) {
763 dev->stats.collisions += (tdes0 >> 3) & 0xf;
764 dev->stats.tx_bytes += le32_to_cpu(txptr->tdes1) & 0x7ff;
765 if (tdes0 & TDES0_ERR_MASK) {
766 dev->stats.tx_errors++;
767 if (tdes0 & 0x0002) { /* UnderRun */
768 db->tx_fifo_underrun++;
769 if ( !(db->cr6_data & CR6_SFT) ) {
770 db->cr6_data = db->cr6_data | CR6_SFT;
771 update_cr6(db->cr6_data, db->ioaddr);
772 }
773 }
774 if (tdes0 & 0x0100)
775 db->tx_excessive_collision++;
776 if (tdes0 & 0x0200)
777 db->tx_late_collision++;
778 if (tdes0 & 0x0400)
779 db->tx_no_carrier++;
780 if (tdes0 & 0x0800)
781 db->tx_loss_carrier++;
782 if (tdes0 & 0x4000)
783 db->tx_jabber_timeout++;
784 }
785 }
786
787 txptr = txptr->next_tx_desc;
788 }/* End of while */
789
790 /* Update TX remove pointer to next */
791 db->tx_remove_ptr = txptr;
792
793 /* Resource available check */
794 if ( db->tx_packet_cnt < TX_WAKE_DESC_CNT )
795 netif_wake_queue(dev); /* Active upper layer, send again */
796 }
797
798
799 /*
800 * Receive the come packet and pass to upper layer
801 */
802
803 static void uli526x_rx_packet(struct net_device *dev, struct uli526x_board_info * db)
804 {
805 struct rx_desc *rxptr;
806 struct sk_buff *skb;
807 int rxlen;
808 u32 rdes0;
809
810 rxptr = db->rx_ready_ptr;
811
812 while(db->rx_avail_cnt) {
813 rdes0 = le32_to_cpu(rxptr->rdes0);
814 if (rdes0 & 0x80000000) /* packet owner check */
815 {
816 break;
817 }
818
819 db->rx_avail_cnt--;
820 db->interval_rx_cnt++;
821
822 pci_unmap_single(db->pdev, le32_to_cpu(rxptr->rdes2), RX_ALLOC_SIZE, PCI_DMA_FROMDEVICE);
823 if ( (rdes0 & 0x300) != 0x300) {
824 /* A packet without First/Last flag */
825 /* reuse this SKB */
826 ULI526X_DBUG(0, "Reuse SK buffer, rdes0", rdes0);
827 uli526x_reuse_skb(db, rxptr->rx_skb_ptr);
828 } else {
829 /* A packet with First/Last flag */
830 rxlen = ( (rdes0 >> 16) & 0x3fff) - 4;
831
832 /* error summary bit check */
833 if (rdes0 & 0x8000) {
834 /* This is a error packet */
835 dev->stats.rx_errors++;
836 if (rdes0 & 1)
837 dev->stats.rx_fifo_errors++;
838 if (rdes0 & 2)
839 dev->stats.rx_crc_errors++;
840 if (rdes0 & 0x80)
841 dev->stats.rx_length_errors++;
842 }
843
844 if ( !(rdes0 & 0x8000) ||
845 ((db->cr6_data & CR6_PM) && (rxlen>6)) ) {
846 struct sk_buff *new_skb = NULL;
847
848 skb = rxptr->rx_skb_ptr;
849
850 /* Good packet, send to upper layer */
851 /* Shorst packet used new SKB */
852 if ((rxlen < RX_COPY_SIZE) &&
853 (((new_skb = netdev_alloc_skb(dev, rxlen + 2)) != NULL))) {
854 skb = new_skb;
855 /* size less than COPY_SIZE, allocate a rxlen SKB */
856 skb_reserve(skb, 2); /* 16byte align */
857 skb_put_data(skb,
858 skb_tail_pointer(rxptr->rx_skb_ptr),
859 rxlen);
860 uli526x_reuse_skb(db, rxptr->rx_skb_ptr);
861 } else
862 skb_put(skb, rxlen);
863
864 skb->protocol = eth_type_trans(skb, dev);
865 netif_rx(skb);
866 dev->stats.rx_packets++;
867 dev->stats.rx_bytes += rxlen;
868
869 } else {
870 /* Reuse SKB buffer when the packet is error */
871 ULI526X_DBUG(0, "Reuse SK buffer, rdes0", rdes0);
872 uli526x_reuse_skb(db, rxptr->rx_skb_ptr);
873 }
874 }
875
876 rxptr = rxptr->next_rx_desc;
877 }
878
879 db->rx_ready_ptr = rxptr;
880 }
881
882
883 /*
884 * Set ULI526X multicast address
885 */
886
887 static void uli526x_set_filter_mode(struct net_device * dev)
888 {
889 struct uli526x_board_info *db = netdev_priv(dev);
890 unsigned long flags;
891
892 ULI526X_DBUG(0, "uli526x_set_filter_mode()", 0);
893 spin_lock_irqsave(&db->lock, flags);
894
895 if (dev->flags & IFF_PROMISC) {
896 ULI526X_DBUG(0, "Enable PROM Mode", 0);
897 db->cr6_data |= CR6_PM | CR6_PBF;
898 update_cr6(db->cr6_data, db->ioaddr);
899 spin_unlock_irqrestore(&db->lock, flags);
900 return;
901 }
902
903 if (dev->flags & IFF_ALLMULTI ||
904 netdev_mc_count(dev) > ULI5261_MAX_MULTICAST) {
905 ULI526X_DBUG(0, "Pass all multicast address",
906 netdev_mc_count(dev));
907 db->cr6_data &= ~(CR6_PM | CR6_PBF);
908 db->cr6_data |= CR6_PAM;
909 spin_unlock_irqrestore(&db->lock, flags);
910 return;
911 }
912
913 ULI526X_DBUG(0, "Set multicast address", netdev_mc_count(dev));
914 send_filter_frame(dev, netdev_mc_count(dev)); /* M5261/M5263 */
915 spin_unlock_irqrestore(&db->lock, flags);
916 }
917
918 static void
919 ULi_ethtool_get_link_ksettings(struct uli526x_board_info *db,
920 struct ethtool_link_ksettings *cmd)
921 {
922 u32 supported, advertising;
923
924 supported = (SUPPORTED_10baseT_Half |
925 SUPPORTED_10baseT_Full |
926 SUPPORTED_100baseT_Half |
927 SUPPORTED_100baseT_Full |
928 SUPPORTED_Autoneg |
929 SUPPORTED_MII);
930
931 advertising = (ADVERTISED_10baseT_Half |
932 ADVERTISED_10baseT_Full |
933 ADVERTISED_100baseT_Half |
934 ADVERTISED_100baseT_Full |
935 ADVERTISED_Autoneg |
936 ADVERTISED_MII);
937
938 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
939 supported);
940 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
941 advertising);
942
943 cmd->base.port = PORT_MII;
944 cmd->base.phy_address = db->phy_addr;
945
946 cmd->base.speed = SPEED_10;
947 cmd->base.duplex = DUPLEX_HALF;
948
949 if(db->op_mode==ULI526X_100MHF || db->op_mode==ULI526X_100MFD)
950 {
951 cmd->base.speed = SPEED_100;
952 }
953 if(db->op_mode==ULI526X_10MFD || db->op_mode==ULI526X_100MFD)
954 {
955 cmd->base.duplex = DUPLEX_FULL;
956 }
957 if(db->link_failed)
958 {
959 cmd->base.speed = SPEED_UNKNOWN;
960 cmd->base.duplex = DUPLEX_UNKNOWN;
961 }
962
963 if (db->media_mode & ULI526X_AUTO)
964 {
965 cmd->base.autoneg = AUTONEG_ENABLE;
966 }
967 }
968
969 static void netdev_get_drvinfo(struct net_device *dev,
970 struct ethtool_drvinfo *info)
971 {
972 struct uli526x_board_info *np = netdev_priv(dev);
973
974 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
975 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
976 strlcpy(info->bus_info, pci_name(np->pdev), sizeof(info->bus_info));
977 }
978
979 static int netdev_get_link_ksettings(struct net_device *dev,
980 struct ethtool_link_ksettings *cmd)
981 {
982 struct uli526x_board_info *np = netdev_priv(dev);
983
984 ULi_ethtool_get_link_ksettings(np, cmd);
985
986 return 0;
987 }
988
989 static u32 netdev_get_link(struct net_device *dev) {
990 struct uli526x_board_info *np = netdev_priv(dev);
991
992 if(np->link_failed)
993 return 0;
994 else
995 return 1;
996 }
997
998 static void uli526x_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
999 {
1000 wol->supported = WAKE_PHY | WAKE_MAGIC;
1001 wol->wolopts = 0;
1002 }
1003
1004 static const struct ethtool_ops netdev_ethtool_ops = {
1005 .get_drvinfo = netdev_get_drvinfo,
1006 .get_link = netdev_get_link,
1007 .get_wol = uli526x_get_wol,
1008 .get_link_ksettings = netdev_get_link_ksettings,
1009 };
1010
1011 /*
1012 * A periodic timer routine
1013 * Dynamic media sense, allocate Rx buffer...
1014 */
1015
1016 static void uli526x_timer(struct timer_list *t)
1017 {
1018 struct uli526x_board_info *db = from_timer(db, t, timer);
1019 struct net_device *dev = pci_get_drvdata(db->pdev);
1020 struct uli_phy_ops *phy = &db->phy;
1021 void __iomem *ioaddr = db->ioaddr;
1022 unsigned long flags;
1023 u8 tmp_cr12 = 0;
1024 u32 tmp_cr8;
1025
1026 //ULI526X_DBUG(0, "uli526x_timer()", 0);
1027 spin_lock_irqsave(&db->lock, flags);
1028
1029
1030 /* Dynamic reset ULI526X : system error or transmit time-out */
1031 tmp_cr8 = ur32(DCR8);
1032 if ( (db->interval_rx_cnt==0) && (tmp_cr8) ) {
1033 db->reset_cr8++;
1034 db->wait_reset = 1;
1035 }
1036 db->interval_rx_cnt = 0;
1037
1038 /* TX polling kick monitor */
1039 if ( db->tx_packet_cnt &&
1040 time_after(jiffies, dev_trans_start(dev) + ULI526X_TX_KICK) ) {
1041 uw32(DCR1, 0x1); // Tx polling again
1042
1043 // TX Timeout
1044 if ( time_after(jiffies, dev_trans_start(dev) + ULI526X_TX_TIMEOUT) ) {
1045 db->reset_TXtimeout++;
1046 db->wait_reset = 1;
1047 netdev_err(dev, " Tx timeout - resetting\n");
1048 }
1049 }
1050
1051 if (db->wait_reset) {
1052 ULI526X_DBUG(0, "Dynamic Reset device", db->tx_packet_cnt);
1053 db->reset_count++;
1054 uli526x_dynamic_reset(dev);
1055 db->timer.expires = ULI526X_TIMER_WUT;
1056 add_timer(&db->timer);
1057 spin_unlock_irqrestore(&db->lock, flags);
1058 return;
1059 }
1060
1061 /* Link status check, Dynamic media type change */
1062 if ((phy->read(db, db->phy_addr, 5) & 0x01e0)!=0)
1063 tmp_cr12 = 3;
1064
1065 if ( !(tmp_cr12 & 0x3) && !db->link_failed ) {
1066 /* Link Failed */
1067 ULI526X_DBUG(0, "Link Failed", tmp_cr12);
1068 netif_carrier_off(dev);
1069 netdev_info(dev, "NIC Link is Down\n");
1070 db->link_failed = 1;
1071
1072 /* For Force 10/100M Half/Full mode: Enable Auto-Nego mode */
1073 /* AUTO don't need */
1074 if ( !(db->media_mode & 0x8) )
1075 phy->write(db, db->phy_addr, 0, 0x1000);
1076
1077 /* AUTO mode, if INT phyxcer link failed, select EXT device */
1078 if (db->media_mode & ULI526X_AUTO) {
1079 db->cr6_data&=~0x00000200; /* bit9=0, HD mode */
1080 update_cr6(db->cr6_data, db->ioaddr);
1081 }
1082 } else
1083 if ((tmp_cr12 & 0x3) && db->link_failed) {
1084 ULI526X_DBUG(0, "Link link OK", tmp_cr12);
1085 db->link_failed = 0;
1086
1087 /* Auto Sense Speed */
1088 if ( (db->media_mode & ULI526X_AUTO) &&
1089 uli526x_sense_speed(db) )
1090 db->link_failed = 1;
1091 uli526x_process_mode(db);
1092
1093 if(db->link_failed==0)
1094 {
1095 netdev_info(dev, "NIC Link is Up %d Mbps %s duplex\n",
1096 (db->op_mode == ULI526X_100MHF ||
1097 db->op_mode == ULI526X_100MFD)
1098 ? 100 : 10,
1099 (db->op_mode == ULI526X_10MFD ||
1100 db->op_mode == ULI526X_100MFD)
1101 ? "Full" : "Half");
1102 netif_carrier_on(dev);
1103 }
1104 /* SHOW_MEDIA_TYPE(db->op_mode); */
1105 }
1106 else if(!(tmp_cr12 & 0x3) && db->link_failed)
1107 {
1108 if(db->init==1)
1109 {
1110 netdev_info(dev, "NIC Link is Down\n");
1111 netif_carrier_off(dev);
1112 }
1113 }
1114 db->init = 0;
1115
1116 /* Timer active again */
1117 db->timer.expires = ULI526X_TIMER_WUT;
1118 add_timer(&db->timer);
1119 spin_unlock_irqrestore(&db->lock, flags);
1120 }
1121
1122
1123 /*
1124 * Stop ULI526X board
1125 * Free Tx/Rx allocated memory
1126 * Init system variable
1127 */
1128
1129 static void uli526x_reset_prepare(struct net_device *dev)
1130 {
1131 struct uli526x_board_info *db = netdev_priv(dev);
1132 void __iomem *ioaddr = db->ioaddr;
1133
1134 /* Sopt MAC controller */
1135 db->cr6_data &= ~(CR6_RXSC | CR6_TXSC); /* Disable Tx/Rx */
1136 update_cr6(db->cr6_data, ioaddr);
1137 uw32(DCR7, 0); /* Disable Interrupt */
1138 uw32(DCR5, ur32(DCR5));
1139
1140 /* Disable upper layer interface */
1141 netif_stop_queue(dev);
1142
1143 /* Free Rx Allocate buffer */
1144 uli526x_free_rxbuffer(db);
1145
1146 /* system variable init */
1147 db->tx_packet_cnt = 0;
1148 db->rx_avail_cnt = 0;
1149 db->link_failed = 1;
1150 db->init=1;
1151 db->wait_reset = 0;
1152 }
1153
1154
1155 /*
1156 * Dynamic reset the ULI526X board
1157 * Stop ULI526X board
1158 * Free Tx/Rx allocated memory
1159 * Reset ULI526X board
1160 * Re-initialize ULI526X board
1161 */
1162
1163 static void uli526x_dynamic_reset(struct net_device *dev)
1164 {
1165 ULI526X_DBUG(0, "uli526x_dynamic_reset()", 0);
1166
1167 uli526x_reset_prepare(dev);
1168
1169 /* Re-initialize ULI526X board */
1170 uli526x_init(dev);
1171
1172 /* Restart upper layer interface */
1173 netif_wake_queue(dev);
1174 }
1175
1176
1177 #ifdef CONFIG_PM
1178
1179 /*
1180 * Suspend the interface.
1181 */
1182
1183 static int uli526x_suspend(struct pci_dev *pdev, pm_message_t state)
1184 {
1185 struct net_device *dev = pci_get_drvdata(pdev);
1186 pci_power_t power_state;
1187 int err;
1188
1189 ULI526X_DBUG(0, "uli526x_suspend", 0);
1190
1191 pci_save_state(pdev);
1192
1193 if (!netif_running(dev))
1194 return 0;
1195
1196 netif_device_detach(dev);
1197 uli526x_reset_prepare(dev);
1198
1199 power_state = pci_choose_state(pdev, state);
1200 pci_enable_wake(pdev, power_state, 0);
1201 err = pci_set_power_state(pdev, power_state);
1202 if (err) {
1203 netif_device_attach(dev);
1204 /* Re-initialize ULI526X board */
1205 uli526x_init(dev);
1206 /* Restart upper layer interface */
1207 netif_wake_queue(dev);
1208 }
1209
1210 return err;
1211 }
1212
1213 /*
1214 * Resume the interface.
1215 */
1216
1217 static int uli526x_resume(struct pci_dev *pdev)
1218 {
1219 struct net_device *dev = pci_get_drvdata(pdev);
1220 int err;
1221
1222 ULI526X_DBUG(0, "uli526x_resume", 0);
1223
1224 pci_restore_state(pdev);
1225
1226 if (!netif_running(dev))
1227 return 0;
1228
1229 err = pci_set_power_state(pdev, PCI_D0);
1230 if (err) {
1231 netdev_warn(dev, "Could not put device into D0\n");
1232 return err;
1233 }
1234
1235 netif_device_attach(dev);
1236 /* Re-initialize ULI526X board */
1237 uli526x_init(dev);
1238 /* Restart upper layer interface */
1239 netif_wake_queue(dev);
1240
1241 return 0;
1242 }
1243
1244 #else /* !CONFIG_PM */
1245
1246 #define uli526x_suspend NULL
1247 #define uli526x_resume NULL
1248
1249 #endif /* !CONFIG_PM */
1250
1251
1252 /*
1253 * free all allocated rx buffer
1254 */
1255
1256 static void uli526x_free_rxbuffer(struct uli526x_board_info * db)
1257 {
1258 ULI526X_DBUG(0, "uli526x_free_rxbuffer()", 0);
1259
1260 /* free allocated rx buffer */
1261 while (db->rx_avail_cnt) {
1262 dev_kfree_skb(db->rx_ready_ptr->rx_skb_ptr);
1263 db->rx_ready_ptr = db->rx_ready_ptr->next_rx_desc;
1264 db->rx_avail_cnt--;
1265 }
1266 }
1267
1268
1269 /*
1270 * Reuse the SK buffer
1271 */
1272
1273 static void uli526x_reuse_skb(struct uli526x_board_info *db, struct sk_buff * skb)
1274 {
1275 struct rx_desc *rxptr = db->rx_insert_ptr;
1276
1277 if (!(rxptr->rdes0 & cpu_to_le32(0x80000000))) {
1278 rxptr->rx_skb_ptr = skb;
1279 rxptr->rdes2 = cpu_to_le32(pci_map_single(db->pdev,
1280 skb_tail_pointer(skb),
1281 RX_ALLOC_SIZE,
1282 PCI_DMA_FROMDEVICE));
1283 wmb();
1284 rxptr->rdes0 = cpu_to_le32(0x80000000);
1285 db->rx_avail_cnt++;
1286 db->rx_insert_ptr = rxptr->next_rx_desc;
1287 } else
1288 ULI526X_DBUG(0, "SK Buffer reuse method error", db->rx_avail_cnt);
1289 }
1290
1291
1292 /*
1293 * Initialize transmit/Receive descriptor
1294 * Using Chain structure, and allocate Tx/Rx buffer
1295 */
1296
1297 static void uli526x_descriptor_init(struct net_device *dev, void __iomem *ioaddr)
1298 {
1299 struct uli526x_board_info *db = netdev_priv(dev);
1300 struct tx_desc *tmp_tx;
1301 struct rx_desc *tmp_rx;
1302 unsigned char *tmp_buf;
1303 dma_addr_t tmp_tx_dma, tmp_rx_dma;
1304 dma_addr_t tmp_buf_dma;
1305 int i;
1306
1307 ULI526X_DBUG(0, "uli526x_descriptor_init()", 0);
1308
1309 /* tx descriptor start pointer */
1310 db->tx_insert_ptr = db->first_tx_desc;
1311 db->tx_remove_ptr = db->first_tx_desc;
1312 uw32(DCR4, db->first_tx_desc_dma); /* TX DESC address */
1313
1314 /* rx descriptor start pointer */
1315 db->first_rx_desc = (void *)db->first_tx_desc + sizeof(struct tx_desc) * TX_DESC_CNT;
1316 db->first_rx_desc_dma = db->first_tx_desc_dma + sizeof(struct tx_desc) * TX_DESC_CNT;
1317 db->rx_insert_ptr = db->first_rx_desc;
1318 db->rx_ready_ptr = db->first_rx_desc;
1319 uw32(DCR3, db->first_rx_desc_dma); /* RX DESC address */
1320
1321 /* Init Transmit chain */
1322 tmp_buf = db->buf_pool_start;
1323 tmp_buf_dma = db->buf_pool_dma_start;
1324 tmp_tx_dma = db->first_tx_desc_dma;
1325 for (tmp_tx = db->first_tx_desc, i = 0; i < TX_DESC_CNT; i++, tmp_tx++) {
1326 tmp_tx->tx_buf_ptr = tmp_buf;
1327 tmp_tx->tdes0 = cpu_to_le32(0);
1328 tmp_tx->tdes1 = cpu_to_le32(0x81000000); /* IC, chain */
1329 tmp_tx->tdes2 = cpu_to_le32(tmp_buf_dma);
1330 tmp_tx_dma += sizeof(struct tx_desc);
1331 tmp_tx->tdes3 = cpu_to_le32(tmp_tx_dma);
1332 tmp_tx->next_tx_desc = tmp_tx + 1;
1333 tmp_buf = tmp_buf + TX_BUF_ALLOC;
1334 tmp_buf_dma = tmp_buf_dma + TX_BUF_ALLOC;
1335 }
1336 (--tmp_tx)->tdes3 = cpu_to_le32(db->first_tx_desc_dma);
1337 tmp_tx->next_tx_desc = db->first_tx_desc;
1338
1339 /* Init Receive descriptor chain */
1340 tmp_rx_dma=db->first_rx_desc_dma;
1341 for (tmp_rx = db->first_rx_desc, i = 0; i < RX_DESC_CNT; i++, tmp_rx++) {
1342 tmp_rx->rdes0 = cpu_to_le32(0);
1343 tmp_rx->rdes1 = cpu_to_le32(0x01000600);
1344 tmp_rx_dma += sizeof(struct rx_desc);
1345 tmp_rx->rdes3 = cpu_to_le32(tmp_rx_dma);
1346 tmp_rx->next_rx_desc = tmp_rx + 1;
1347 }
1348 (--tmp_rx)->rdes3 = cpu_to_le32(db->first_rx_desc_dma);
1349 tmp_rx->next_rx_desc = db->first_rx_desc;
1350
1351 /* pre-allocate Rx buffer */
1352 allocate_rx_buffer(dev);
1353 }
1354
1355
1356 /*
1357 * Update CR6 value
1358 * Firstly stop ULI526X, then written value and start
1359 */
1360 static void update_cr6(u32 cr6_data, void __iomem *ioaddr)
1361 {
1362 uw32(DCR6, cr6_data);
1363 udelay(5);
1364 }
1365
1366
1367 /*
1368 * Send a setup frame for M5261/M5263
1369 * This setup frame initialize ULI526X address filter mode
1370 */
1371
1372 #ifdef __BIG_ENDIAN
1373 #define FLT_SHIFT 16
1374 #else
1375 #define FLT_SHIFT 0
1376 #endif
1377
1378 static void send_filter_frame(struct net_device *dev, int mc_cnt)
1379 {
1380 struct uli526x_board_info *db = netdev_priv(dev);
1381 void __iomem *ioaddr = db->ioaddr;
1382 struct netdev_hw_addr *ha;
1383 struct tx_desc *txptr;
1384 u16 * addrptr;
1385 u32 * suptr;
1386 int i;
1387
1388 ULI526X_DBUG(0, "send_filter_frame()", 0);
1389
1390 txptr = db->tx_insert_ptr;
1391 suptr = (u32 *) txptr->tx_buf_ptr;
1392
1393 /* Node address */
1394 addrptr = (u16 *) dev->dev_addr;
1395 *suptr++ = addrptr[0] << FLT_SHIFT;
1396 *suptr++ = addrptr[1] << FLT_SHIFT;
1397 *suptr++ = addrptr[2] << FLT_SHIFT;
1398
1399 /* broadcast address */
1400 *suptr++ = 0xffff << FLT_SHIFT;
1401 *suptr++ = 0xffff << FLT_SHIFT;
1402 *suptr++ = 0xffff << FLT_SHIFT;
1403
1404 /* fit the multicast address */
1405 netdev_for_each_mc_addr(ha, dev) {
1406 addrptr = (u16 *) ha->addr;
1407 *suptr++ = addrptr[0] << FLT_SHIFT;
1408 *suptr++ = addrptr[1] << FLT_SHIFT;
1409 *suptr++ = addrptr[2] << FLT_SHIFT;
1410 }
1411
1412 for (i = netdev_mc_count(dev); i < 14; i++) {
1413 *suptr++ = 0xffff << FLT_SHIFT;
1414 *suptr++ = 0xffff << FLT_SHIFT;
1415 *suptr++ = 0xffff << FLT_SHIFT;
1416 }
1417
1418 /* prepare the setup frame */
1419 db->tx_insert_ptr = txptr->next_tx_desc;
1420 txptr->tdes1 = cpu_to_le32(0x890000c0);
1421
1422 /* Resource Check and Send the setup packet */
1423 if (db->tx_packet_cnt < TX_DESC_CNT) {
1424 /* Resource Empty */
1425 db->tx_packet_cnt++;
1426 txptr->tdes0 = cpu_to_le32(0x80000000);
1427 update_cr6(db->cr6_data | 0x2000, ioaddr);
1428 uw32(DCR1, 0x1); /* Issue Tx polling */
1429 update_cr6(db->cr6_data, ioaddr);
1430 netif_trans_update(dev);
1431 } else
1432 netdev_err(dev, "No Tx resource - Send_filter_frame!\n");
1433 }
1434
1435
1436 /*
1437 * Allocate rx buffer,
1438 * As possible as allocate maxiumn Rx buffer
1439 */
1440
1441 static void allocate_rx_buffer(struct net_device *dev)
1442 {
1443 struct uli526x_board_info *db = netdev_priv(dev);
1444 struct rx_desc *rxptr;
1445 struct sk_buff *skb;
1446
1447 rxptr = db->rx_insert_ptr;
1448
1449 while(db->rx_avail_cnt < RX_DESC_CNT) {
1450 skb = netdev_alloc_skb(dev, RX_ALLOC_SIZE);
1451 if (skb == NULL)
1452 break;
1453 rxptr->rx_skb_ptr = skb; /* FIXME (?) */
1454 rxptr->rdes2 = cpu_to_le32(pci_map_single(db->pdev,
1455 skb_tail_pointer(skb),
1456 RX_ALLOC_SIZE,
1457 PCI_DMA_FROMDEVICE));
1458 wmb();
1459 rxptr->rdes0 = cpu_to_le32(0x80000000);
1460 rxptr = rxptr->next_rx_desc;
1461 db->rx_avail_cnt++;
1462 }
1463
1464 db->rx_insert_ptr = rxptr;
1465 }
1466
1467
1468 /*
1469 * Read one word data from the serial ROM
1470 */
1471
1472 static u16 read_srom_word(struct uli526x_board_info *db, int offset)
1473 {
1474 void __iomem *ioaddr = db->ioaddr;
1475 u16 srom_data = 0;
1476 int i;
1477
1478 uw32(DCR9, CR9_SROM_READ);
1479 uw32(DCR9, CR9_SROM_READ | CR9_SRCS);
1480
1481 /* Send the Read Command 110b */
1482 srom_clk_write(db, SROM_DATA_1);
1483 srom_clk_write(db, SROM_DATA_1);
1484 srom_clk_write(db, SROM_DATA_0);
1485
1486 /* Send the offset */
1487 for (i = 5; i >= 0; i--) {
1488 srom_data = (offset & (1 << i)) ? SROM_DATA_1 : SROM_DATA_0;
1489 srom_clk_write(db, srom_data);
1490 }
1491
1492 uw32(DCR9, CR9_SROM_READ | CR9_SRCS);
1493
1494 for (i = 16; i > 0; i--) {
1495 uw32(DCR9, CR9_SROM_READ | CR9_SRCS | CR9_SRCLK);
1496 udelay(5);
1497 srom_data = (srom_data << 1) |
1498 ((ur32(DCR9) & CR9_CRDOUT) ? 1 : 0);
1499 uw32(DCR9, CR9_SROM_READ | CR9_SRCS);
1500 udelay(5);
1501 }
1502
1503 uw32(DCR9, CR9_SROM_READ);
1504 return srom_data;
1505 }
1506
1507
1508 /*
1509 * Auto sense the media mode
1510 */
1511
1512 static u8 uli526x_sense_speed(struct uli526x_board_info * db)
1513 {
1514 struct uli_phy_ops *phy = &db->phy;
1515 u8 ErrFlag = 0;
1516 u16 phy_mode;
1517
1518 phy_mode = phy->read(db, db->phy_addr, 1);
1519 phy_mode = phy->read(db, db->phy_addr, 1);
1520
1521 if ( (phy_mode & 0x24) == 0x24 ) {
1522
1523 phy_mode = ((phy->read(db, db->phy_addr, 5) & 0x01e0)<<7);
1524 if(phy_mode&0x8000)
1525 phy_mode = 0x8000;
1526 else if(phy_mode&0x4000)
1527 phy_mode = 0x4000;
1528 else if(phy_mode&0x2000)
1529 phy_mode = 0x2000;
1530 else
1531 phy_mode = 0x1000;
1532
1533 switch (phy_mode) {
1534 case 0x1000: db->op_mode = ULI526X_10MHF; break;
1535 case 0x2000: db->op_mode = ULI526X_10MFD; break;
1536 case 0x4000: db->op_mode = ULI526X_100MHF; break;
1537 case 0x8000: db->op_mode = ULI526X_100MFD; break;
1538 default: db->op_mode = ULI526X_10MHF; ErrFlag = 1; break;
1539 }
1540 } else {
1541 db->op_mode = ULI526X_10MHF;
1542 ULI526X_DBUG(0, "Link Failed :", phy_mode);
1543 ErrFlag = 1;
1544 }
1545
1546 return ErrFlag;
1547 }
1548
1549
1550 /*
1551 * Set 10/100 phyxcer capability
1552 * AUTO mode : phyxcer register4 is NIC capability
1553 * Force mode: phyxcer register4 is the force media
1554 */
1555
1556 static void uli526x_set_phyxcer(struct uli526x_board_info *db)
1557 {
1558 struct uli_phy_ops *phy = &db->phy;
1559 u16 phy_reg;
1560
1561 /* Phyxcer capability setting */
1562 phy_reg = phy->read(db, db->phy_addr, 4) & ~0x01e0;
1563
1564 if (db->media_mode & ULI526X_AUTO) {
1565 /* AUTO Mode */
1566 phy_reg |= db->PHY_reg4;
1567 } else {
1568 /* Force Mode */
1569 switch(db->media_mode) {
1570 case ULI526X_10MHF: phy_reg |= 0x20; break;
1571 case ULI526X_10MFD: phy_reg |= 0x40; break;
1572 case ULI526X_100MHF: phy_reg |= 0x80; break;
1573 case ULI526X_100MFD: phy_reg |= 0x100; break;
1574 }
1575
1576 }
1577
1578 /* Write new capability to Phyxcer Reg4 */
1579 if ( !(phy_reg & 0x01e0)) {
1580 phy_reg|=db->PHY_reg4;
1581 db->media_mode|=ULI526X_AUTO;
1582 }
1583 phy->write(db, db->phy_addr, 4, phy_reg);
1584
1585 /* Restart Auto-Negotiation */
1586 phy->write(db, db->phy_addr, 0, 0x1200);
1587 udelay(50);
1588 }
1589
1590
1591 /*
1592 * Process op-mode
1593 AUTO mode : PHY controller in Auto-negotiation Mode
1594 * Force mode: PHY controller in force mode with HUB
1595 * N-way force capability with SWITCH
1596 */
1597
1598 static void uli526x_process_mode(struct uli526x_board_info *db)
1599 {
1600 struct uli_phy_ops *phy = &db->phy;
1601 u16 phy_reg;
1602
1603 /* Full Duplex Mode Check */
1604 if (db->op_mode & 0x4)
1605 db->cr6_data |= CR6_FDM; /* Set Full Duplex Bit */
1606 else
1607 db->cr6_data &= ~CR6_FDM; /* Clear Full Duplex Bit */
1608
1609 update_cr6(db->cr6_data, db->ioaddr);
1610
1611 /* 10/100M phyxcer force mode need */
1612 if (!(db->media_mode & 0x8)) {
1613 /* Forece Mode */
1614 phy_reg = phy->read(db, db->phy_addr, 6);
1615 if (!(phy_reg & 0x1)) {
1616 /* parter without N-Way capability */
1617 phy_reg = 0x0;
1618 switch(db->op_mode) {
1619 case ULI526X_10MHF: phy_reg = 0x0; break;
1620 case ULI526X_10MFD: phy_reg = 0x100; break;
1621 case ULI526X_100MHF: phy_reg = 0x2000; break;
1622 case ULI526X_100MFD: phy_reg = 0x2100; break;
1623 }
1624 phy->write(db, db->phy_addr, 0, phy_reg);
1625 }
1626 }
1627 }
1628
1629
1630 /* M5261/M5263 Chip */
1631 static void phy_writeby_cr9(struct uli526x_board_info *db, u8 phy_addr,
1632 u8 offset, u16 phy_data)
1633 {
1634 u16 i;
1635
1636 /* Send 33 synchronization clock to Phy controller */
1637 for (i = 0; i < 35; i++)
1638 phy_write_1bit(db, PHY_DATA_1);
1639
1640 /* Send start command(01) to Phy */
1641 phy_write_1bit(db, PHY_DATA_0);
1642 phy_write_1bit(db, PHY_DATA_1);
1643
1644 /* Send write command(01) to Phy */
1645 phy_write_1bit(db, PHY_DATA_0);
1646 phy_write_1bit(db, PHY_DATA_1);
1647
1648 /* Send Phy address */
1649 for (i = 0x10; i > 0; i = i >> 1)
1650 phy_write_1bit(db, phy_addr & i ? PHY_DATA_1 : PHY_DATA_0);
1651
1652 /* Send register address */
1653 for (i = 0x10; i > 0; i = i >> 1)
1654 phy_write_1bit(db, offset & i ? PHY_DATA_1 : PHY_DATA_0);
1655
1656 /* written trasnition */
1657 phy_write_1bit(db, PHY_DATA_1);
1658 phy_write_1bit(db, PHY_DATA_0);
1659
1660 /* Write a word data to PHY controller */
1661 for (i = 0x8000; i > 0; i >>= 1)
1662 phy_write_1bit(db, phy_data & i ? PHY_DATA_1 : PHY_DATA_0);
1663 }
1664
1665 static u16 phy_readby_cr9(struct uli526x_board_info *db, u8 phy_addr, u8 offset)
1666 {
1667 u16 phy_data;
1668 int i;
1669
1670 /* Send 33 synchronization clock to Phy controller */
1671 for (i = 0; i < 35; i++)
1672 phy_write_1bit(db, PHY_DATA_1);
1673
1674 /* Send start command(01) to Phy */
1675 phy_write_1bit(db, PHY_DATA_0);
1676 phy_write_1bit(db, PHY_DATA_1);
1677
1678 /* Send read command(10) to Phy */
1679 phy_write_1bit(db, PHY_DATA_1);
1680 phy_write_1bit(db, PHY_DATA_0);
1681
1682 /* Send Phy address */
1683 for (i = 0x10; i > 0; i = i >> 1)
1684 phy_write_1bit(db, phy_addr & i ? PHY_DATA_1 : PHY_DATA_0);
1685
1686 /* Send register address */
1687 for (i = 0x10; i > 0; i = i >> 1)
1688 phy_write_1bit(db, offset & i ? PHY_DATA_1 : PHY_DATA_0);
1689
1690 /* Skip transition state */
1691 phy_read_1bit(db);
1692
1693 /* read 16bit data */
1694 for (phy_data = 0, i = 0; i < 16; i++) {
1695 phy_data <<= 1;
1696 phy_data |= phy_read_1bit(db);
1697 }
1698
1699 return phy_data;
1700 }
1701
1702 static u16 phy_readby_cr10(struct uli526x_board_info *db, u8 phy_addr,
1703 u8 offset)
1704 {
1705 void __iomem *ioaddr = db->ioaddr;
1706 u32 cr10_value = phy_addr;
1707
1708 cr10_value = (cr10_value << 5) + offset;
1709 cr10_value = (cr10_value << 16) + 0x08000000;
1710 uw32(DCR10, cr10_value);
1711 udelay(1);
1712 while (1) {
1713 cr10_value = ur32(DCR10);
1714 if (cr10_value & 0x10000000)
1715 break;
1716 }
1717 return cr10_value & 0x0ffff;
1718 }
1719
1720 static void phy_writeby_cr10(struct uli526x_board_info *db, u8 phy_addr,
1721 u8 offset, u16 phy_data)
1722 {
1723 void __iomem *ioaddr = db->ioaddr;
1724 u32 cr10_value = phy_addr;
1725
1726 cr10_value = (cr10_value << 5) + offset;
1727 cr10_value = (cr10_value << 16) + 0x04000000 + phy_data;
1728 uw32(DCR10, cr10_value);
1729 udelay(1);
1730 }
1731 /*
1732 * Write one bit data to Phy Controller
1733 */
1734
1735 static void phy_write_1bit(struct uli526x_board_info *db, u32 data)
1736 {
1737 void __iomem *ioaddr = db->ioaddr;
1738
1739 uw32(DCR9, data); /* MII Clock Low */
1740 udelay(1);
1741 uw32(DCR9, data | MDCLKH); /* MII Clock High */
1742 udelay(1);
1743 uw32(DCR9, data); /* MII Clock Low */
1744 udelay(1);
1745 }
1746
1747
1748 /*
1749 * Read one bit phy data from PHY controller
1750 */
1751
1752 static u16 phy_read_1bit(struct uli526x_board_info *db)
1753 {
1754 void __iomem *ioaddr = db->ioaddr;
1755 u16 phy_data;
1756
1757 uw32(DCR9, 0x50000);
1758 udelay(1);
1759 phy_data = (ur32(DCR9) >> 19) & 0x1;
1760 uw32(DCR9, 0x40000);
1761 udelay(1);
1762
1763 return phy_data;
1764 }
1765
1766
1767 static const struct pci_device_id uli526x_pci_tbl[] = {
1768 { 0x10B9, 0x5261, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_ULI5261_ID },
1769 { 0x10B9, 0x5263, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_ULI5263_ID },
1770 { 0, }
1771 };
1772 MODULE_DEVICE_TABLE(pci, uli526x_pci_tbl);
1773
1774
1775 static struct pci_driver uli526x_driver = {
1776 .name = "uli526x",
1777 .id_table = uli526x_pci_tbl,
1778 .probe = uli526x_init_one,
1779 .remove = uli526x_remove_one,
1780 .suspend = uli526x_suspend,
1781 .resume = uli526x_resume,
1782 };
1783
1784 MODULE_AUTHOR("Peer Chen, peer.chen@uli.com.tw");
1785 MODULE_DESCRIPTION("ULi M5261/M5263 fast ethernet driver");
1786 MODULE_LICENSE("GPL");
1787
1788 module_param(debug, int, 0644);
1789 module_param(mode, int, 0);
1790 module_param(cr6set, int, 0);
1791 MODULE_PARM_DESC(debug, "ULi M5261/M5263 enable debugging (0-1)");
1792 MODULE_PARM_DESC(mode, "ULi M5261/M5263: Bit 0: 10/100Mbps, bit 2: duplex, bit 8: HomePNA");
1793
1794 /* Description:
1795 * when user used insmod to add module, system invoked init_module()
1796 * to register the services.
1797 */
1798
1799 static int __init uli526x_init_module(void)
1800 {
1801
1802 pr_info("%s\n", version);
1803 printed_version = 1;
1804
1805 ULI526X_DBUG(0, "init_module() ", debug);
1806
1807 if (debug)
1808 uli526x_debug = debug; /* set debug flag */
1809 if (cr6set)
1810 uli526x_cr6_user_set = cr6set;
1811
1812 switch (mode) {
1813 case ULI526X_10MHF:
1814 case ULI526X_100MHF:
1815 case ULI526X_10MFD:
1816 case ULI526X_100MFD:
1817 uli526x_media_mode = mode;
1818 break;
1819 default:
1820 uli526x_media_mode = ULI526X_AUTO;
1821 break;
1822 }
1823
1824 return pci_register_driver(&uli526x_driver);
1825 }
1826
1827
1828 /*
1829 * Description:
1830 * when user used rmmod to delete module, system invoked clean_module()
1831 * to un-register all registered services.
1832 */
1833
1834 static void __exit uli526x_cleanup_module(void)
1835 {
1836 ULI526X_DBUG(0, "uli526x_cleanup_module() ", debug);
1837 pci_unregister_driver(&uli526x_driver);
1838 }
1839
1840 module_init(uli526x_init_module);
1841 module_exit(uli526x_cleanup_module);
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git