1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 A Davicom DM9102/DM9102A/DM9102A+DM9801/DM9102A+DM9802 NIC fast
4 ethernet driver for Linux.
5 Copyright (C) 1997 Sten Wang
6
7
8 DAVICOM Web-Site: www.davicom.com.tw
9
10 Author: Sten Wang, 886-3-5798797-8517, E-mail: sten_wang@davicom.com.tw
11 Maintainer: Tobias Ringstrom <tori@unhappy.mine.nu>
12
13 (C)Copyright 1997-1998 DAVICOM Semiconductor,Inc. All Rights Reserved.
14
15 Marcelo Tosatti <marcelo@conectiva.com.br> :
16 Made it compile in 2.3 (device to net_device)
17
18 Alan Cox <alan@lxorguk.ukuu.org.uk> :
19 Cleaned up for kernel merge.
20 Removed the back compatibility support
21 Reformatted, fixing spelling etc as I went
22 Removed IRQ 0-15 assumption
23
24 Jeff Garzik <jgarzik@pobox.com> :
25 Updated to use new PCI driver API.
26 Resource usage cleanups.
27 Report driver version to user.
28
29 Tobias Ringstrom <tori@unhappy.mine.nu> :
30 Cleaned up and added SMP safety. Thanks go to Jeff Garzik,
31 Andrew Morton and Frank Davis for the SMP safety fixes.
32
33 Vojtech Pavlik <vojtech@suse.cz> :
34 Cleaned up pointer arithmetics.
35 Fixed a lot of 64bit issues.
36 Cleaned up printk()s a bit.
37 Fixed some obvious big endian problems.
38
39 Tobias Ringstrom <tori@unhappy.mine.nu> :
40 Use time_after for jiffies calculation. Added ethtool
41 support. Updated PCI resource allocation. Do not
42 forget to unmap PCI mapped skbs.
43
44 Alan Cox <alan@lxorguk.ukuu.org.uk>
45 Added new PCI identifiers provided by Clear Zhang at ALi
46 for their 1563 ethernet device.
47
48 TODO
49
50 Check on 64 bit boxes.
51 Check and fix on big endian boxes.
52
53 Test and make sure PCI latency is now correct for all cases.
54 */
55
56 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
57
58 #define DRV_NAME "dmfe"
59
60 #include <linux/module.h>
61 #include <linux/kernel.h>
62 #include <linux/string.h>
63 #include <linux/timer.h>
64 #include <linux/ptrace.h>
65 #include <linux/errno.h>
66 #include <linux/ioport.h>
67 #include <linux/interrupt.h>
68 #include <linux/pci.h>
69 #include <linux/dma-mapping.h>
70 #include <linux/init.h>
71 #include <linux/netdevice.h>
72 #include <linux/etherdevice.h>
73 #include <linux/ethtool.h>
74 #include <linux/skbuff.h>
75 #include <linux/delay.h>
76 #include <linux/spinlock.h>
77 #include <linux/crc32.h>
78 #include <linux/bitops.h>
79
80 #include <asm/processor.h>
81 #include <asm/io.h>
82 #include <asm/dma.h>
83 #include <linux/uaccess.h>
84 #include <asm/irq.h>
85
86 #ifdef CONFIG_TULIP_DM910X
87 #include <linux/of.h>
88 #endif
89
90
91 /* Board/System/Debug information/definition ---------------- */
92 #define PCI_DM9132_ID 0x91321282 /* Davicom DM9132 ID */
93 #define PCI_DM9102_ID 0x91021282 /* Davicom DM9102 ID */
94 #define PCI_DM9100_ID 0x91001282 /* Davicom DM9100 ID */
95 #define PCI_DM9009_ID 0x90091282 /* Davicom DM9009 ID */
96
97 #define DM9102_IO_SIZE 0x80
98 #define DM9102A_IO_SIZE 0x100
99 #define TX_MAX_SEND_CNT 0x1 /* Maximum tx packet per time */
100 #define TX_DESC_CNT 0x10 /* Allocated Tx descriptors */
101 #define RX_DESC_CNT 0x20 /* Allocated Rx descriptors */
102 #define TX_FREE_DESC_CNT (TX_DESC_CNT - 2) /* Max TX packet count */
103 #define TX_WAKE_DESC_CNT (TX_DESC_CNT - 3) /* TX wakeup count */
104 #define DESC_ALL_CNT (TX_DESC_CNT + RX_DESC_CNT)
105 #define TX_BUF_ALLOC 0x600
106 #define RX_ALLOC_SIZE 0x620
107 #define DM910X_RESET 1
108 #define CR0_DEFAULT 0x00E00000 /* TX & RX burst mode */
109 #define CR6_DEFAULT 0x00080000 /* HD */
110 #define CR7_DEFAULT 0x180c1
111 #define CR15_DEFAULT 0x06 /* TxJabber RxWatchdog */
112 #define TDES0_ERR_MASK 0x4302 /* TXJT, LC, EC, FUE */
113 #define MAX_PACKET_SIZE 1514
114 #define DMFE_MAX_MULTICAST 14
115 #define RX_COPY_SIZE 100
116 #define MAX_CHECK_PACKET 0x8000
117 #define DM9801_NOISE_FLOOR 8
118 #define DM9802_NOISE_FLOOR 5
119
120 #define DMFE_WOL_LINKCHANGE 0x20000000
121 #define DMFE_WOL_SAMPLEPACKET 0x10000000
122 #define DMFE_WOL_MAGICPACKET 0x08000000
123
124
125 #define DMFE_10MHF 0
126 #define DMFE_100MHF 1
127 #define DMFE_10MFD 4
128 #define DMFE_100MFD 5
129 #define DMFE_AUTO 8
130 #define DMFE_1M_HPNA 0x10
131
132 #define DMFE_TXTH_72 0x400000 /* TX TH 72 byte */
133 #define DMFE_TXTH_96 0x404000 /* TX TH 96 byte */
134 #define DMFE_TXTH_128 0x0000 /* TX TH 128 byte */
135 #define DMFE_TXTH_256 0x4000 /* TX TH 256 byte */
136 #define DMFE_TXTH_512 0x8000 /* TX TH 512 byte */
137 #define DMFE_TXTH_1K 0xC000 /* TX TH 1K byte */
138
139 #define DMFE_TIMER_WUT (jiffies + HZ * 1)/* timer wakeup time : 1 second */
140 #define DMFE_TX_TIMEOUT ((3*HZ)/2) /* tx packet time-out time 1.5 s" */
141 #define DMFE_TX_KICK (HZ/2) /* tx packet Kick-out time 0.5 s" */
142
143 #define dw32(reg, val) iowrite32(val, ioaddr + (reg))
144 #define dw16(reg, val) iowrite16(val, ioaddr + (reg))
145 #define dr32(reg) ioread32(ioaddr + (reg))
146 #define dr16(reg) ioread16(ioaddr + (reg))
147 #define dr8(reg) ioread8(ioaddr + (reg))
148
149 #define DMFE_DBUG(dbug_now, msg, value) \
150 do { \
151 if (dmfe_debug || (dbug_now)) \
152 pr_err("%s %lx\n", \
153 (msg), (long) (value)); \
154 } while (0)
155
156 #define SHOW_MEDIA_TYPE(mode) \
157 pr_info("Change Speed to %sMhz %s duplex\n" , \
158 (mode & 1) ? "100":"10", \
159 (mode & 4) ? "full":"half");
160
161
162 /* CR9 definition: SROM/MII */
163 #define CR9_SROM_READ 0x4800
164 #define CR9_SRCS 0x1
165 #define CR9_SRCLK 0x2
166 #define CR9_CRDOUT 0x8
167 #define SROM_DATA_0 0x0
168 #define SROM_DATA_1 0x4
169 #define PHY_DATA_1 0x20000
170 #define PHY_DATA_0 0x00000
171 #define MDCLKH 0x10000
172
173 #define PHY_POWER_DOWN 0x800
174
175 #define SROM_V41_CODE 0x14
176
177 #define __CHK_IO_SIZE(pci_id, dev_rev) \
178 (( ((pci_id)==PCI_DM9132_ID) || ((dev_rev) >= 0x30) ) ? \
179 DM9102A_IO_SIZE: DM9102_IO_SIZE)
180
181 #define CHK_IO_SIZE(pci_dev) \
182 (__CHK_IO_SIZE(((pci_dev)->device << 16) | (pci_dev)->vendor, \
183 (pci_dev)->revision))
184
185 /* Structure/enum declaration ------------------------------- */
186 struct tx_desc {
187 __le32 tdes0, tdes1, tdes2, tdes3; /* Data for the card */
188 char *tx_buf_ptr; /* Data for us */
189 struct tx_desc *next_tx_desc;
190 } __attribute__(( aligned(32) ));
191
192 struct rx_desc {
193 __le32 rdes0, rdes1, rdes2, rdes3; /* Data for the card */
194 struct sk_buff *rx_skb_ptr; /* Data for us */
195 struct rx_desc *next_rx_desc;
196 } __attribute__(( aligned(32) ));
197
198 struct dmfe_board_info {
199 u32 chip_id; /* Chip vendor/Device ID */
200 u8 chip_revision; /* Chip revision */
201 struct net_device *next_dev; /* next device */
202 struct pci_dev *pdev; /* PCI device */
203 spinlock_t lock;
204
205 void __iomem *ioaddr; /* I/O base address */
206 u32 cr0_data;
207 u32 cr5_data;
208 u32 cr6_data;
209 u32 cr7_data;
210 u32 cr15_data;
211
212 /* pointer for memory physical address */
213 dma_addr_t buf_pool_dma_ptr; /* Tx buffer pool memory */
214 dma_addr_t buf_pool_dma_start; /* Tx buffer pool align dword */
215 dma_addr_t desc_pool_dma_ptr; /* descriptor pool memory */
216 dma_addr_t first_tx_desc_dma;
217 dma_addr_t first_rx_desc_dma;
218
219 /* descriptor pointer */
220 unsigned char *buf_pool_ptr; /* Tx buffer pool memory */
221 unsigned char *buf_pool_start; /* Tx buffer pool align dword */
222 unsigned char *desc_pool_ptr; /* descriptor pool memory */
223 struct tx_desc *first_tx_desc;
224 struct tx_desc *tx_insert_ptr;
225 struct tx_desc *tx_remove_ptr;
226 struct rx_desc *first_rx_desc;
227 struct rx_desc *rx_insert_ptr;
228 struct rx_desc *rx_ready_ptr; /* packet come pointer */
229 unsigned long tx_packet_cnt; /* transmitted packet count */
230 unsigned long tx_queue_cnt; /* wait to send packet count */
231 unsigned long rx_avail_cnt; /* available rx descriptor count */
232 unsigned long interval_rx_cnt; /* rx packet count a callback time */
233
234 u16 HPNA_command; /* For HPNA register 16 */
235 u16 HPNA_timer; /* For HPNA remote device check */
236 u16 dbug_cnt;
237 u16 NIC_capability; /* NIC media capability */
238 u16 PHY_reg4; /* Saved Phyxcer register 4 value */
239
240 u8 HPNA_present; /* 0:none, 1:DM9801, 2:DM9802 */
241 u8 chip_type; /* Keep DM9102A chip type */
242 u8 media_mode; /* user specify media mode */
243 u8 op_mode; /* real work media mode */
244 u8 phy_addr;
245 u8 wait_reset; /* Hardware failed, need to reset */
246 u8 dm910x_chk_mode; /* Operating mode check */
247 u8 first_in_callback; /* Flag to record state */
248 u8 wol_mode; /* user WOL settings */
249 struct timer_list timer;
250
251 /* Driver defined statistic counter */
252 unsigned long tx_fifo_underrun;
253 unsigned long tx_loss_carrier;
254 unsigned long tx_no_carrier;
255 unsigned long tx_late_collision;
256 unsigned long tx_excessive_collision;
257 unsigned long tx_jabber_timeout;
258 unsigned long reset_count;
259 unsigned long reset_cr8;
260 unsigned long reset_fatal;
261 unsigned long reset_TXtimeout;
262
263 /* NIC SROM data */
264 unsigned char srom[128];
265 };
266
267 enum dmfe_offsets {
268 DCR0 = 0x00, DCR1 = 0x08, DCR2 = 0x10, DCR3 = 0x18, DCR4 = 0x20,
269 DCR5 = 0x28, DCR6 = 0x30, DCR7 = 0x38, DCR8 = 0x40, DCR9 = 0x48,
270 DCR10 = 0x50, DCR11 = 0x58, DCR12 = 0x60, DCR13 = 0x68, DCR14 = 0x70,
271 DCR15 = 0x78
272 };
273
274 enum dmfe_CR6_bits {
275 CR6_RXSC = 0x2, CR6_PBF = 0x8, CR6_PM = 0x40, CR6_PAM = 0x80,
276 CR6_FDM = 0x200, CR6_TXSC = 0x2000, CR6_STI = 0x100000,
277 CR6_SFT = 0x200000, CR6_RXA = 0x40000000, CR6_NO_PURGE = 0x20000000
278 };
279
280 /* Global variable declaration ----------------------------- */
281 static int dmfe_debug;
282 static unsigned char dmfe_media_mode = DMFE_AUTO;
283 static u32 dmfe_cr6_user_set;
284
285 /* For module input parameter */
286 static int debug;
287 static u32 cr6set;
288 static unsigned char mode = 8;
289 static u8 chkmode = 1;
290 static u8 HPNA_mode; /* Default: Low Power/High Speed */
291 static u8 HPNA_rx_cmd; /* Default: Disable Rx remote command */
292 static u8 HPNA_tx_cmd; /* Default: Don't issue remote command */
293 static u8 HPNA_NoiseFloor; /* Default: HPNA NoiseFloor */
294 static u8 SF_mode; /* Special Function: 1:VLAN, 2:RX Flow Control
295 4: TX pause packet */
296
297
298 /* function declaration ------------------------------------- */
299 static int dmfe_open(struct net_device *);
300 static netdev_tx_t dmfe_start_xmit(struct sk_buff *, struct net_device *);
301 static int dmfe_stop(struct net_device *);
302 static void dmfe_set_filter_mode(struct net_device *);
303 static const struct ethtool_ops netdev_ethtool_ops;
304 static u16 read_srom_word(void __iomem *, int);
305 static irqreturn_t dmfe_interrupt(int , void *);
306 #ifdef CONFIG_NET_POLL_CONTROLLER
307 static void poll_dmfe (struct net_device *dev);
308 #endif
309 static void dmfe_descriptor_init(struct net_device *);
310 static void allocate_rx_buffer(struct net_device *);
311 static void update_cr6(u32, void __iomem *);
312 static void send_filter_frame(struct net_device *);
313 static void dm9132_id_table(struct net_device *);
314 static u16 dmfe_phy_read(void __iomem *, u8, u8, u32);
315 static void dmfe_phy_write(void __iomem *, u8, u8, u16, u32);
316 static void dmfe_phy_write_1bit(void __iomem *, u32);
317 static u16 dmfe_phy_read_1bit(void __iomem *);
318 static u8 dmfe_sense_speed(struct dmfe_board_info *);
319 static void dmfe_process_mode(struct dmfe_board_info *);
320 static void dmfe_timer(struct timer_list *);
321 static inline u32 cal_CRC(unsigned char *, unsigned int, u8);
322 static void dmfe_rx_packet(struct net_device *, struct dmfe_board_info *);
323 static void dmfe_free_tx_pkt(struct net_device *, struct dmfe_board_info *);
324 static void dmfe_reuse_skb(struct dmfe_board_info *, struct sk_buff *);
325 static void dmfe_dynamic_reset(struct net_device *);
326 static void dmfe_free_rxbuffer(struct dmfe_board_info *);
327 static void dmfe_init_dm910x(struct net_device *);
328 static void dmfe_parse_srom(struct dmfe_board_info *);
329 static void dmfe_program_DM9801(struct dmfe_board_info *, int);
330 static void dmfe_program_DM9802(struct dmfe_board_info *);
331 static void dmfe_HPNA_remote_cmd_chk(struct dmfe_board_info * );
332 static void dmfe_set_phyxcer(struct dmfe_board_info *);
333
334 /* DM910X network board routine ---------------------------- */
335
336 static const struct net_device_ops netdev_ops = {
337 .ndo_open = dmfe_open,
338 .ndo_stop = dmfe_stop,
339 .ndo_start_xmit = dmfe_start_xmit,
340 .ndo_set_rx_mode = dmfe_set_filter_mode,
341 .ndo_set_mac_address = eth_mac_addr,
342 .ndo_validate_addr = eth_validate_addr,
343 #ifdef CONFIG_NET_POLL_CONTROLLER
344 .ndo_poll_controller = poll_dmfe,
345 #endif
346 };
347
348 /*
349 * Search DM910X board ,allocate space and register it
350 */
351
dmfe_init_one(struct pci_dev * pdev,const struct pci_device_id * ent)352 static int dmfe_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
353 {
354 struct dmfe_board_info *db; /* board information structure */
355 struct net_device *dev;
356 u32 pci_pmr;
357 int i, err;
358
359 DMFE_DBUG(0, "dmfe_init_one()", 0);
360
361 /*
362 * SPARC on-board DM910x chips should be handled by the main
363 * tulip driver, except for early DM9100s.
364 */
365 #ifdef CONFIG_TULIP_DM910X
366 if ((ent->driver_data == PCI_DM9100_ID && pdev->revision >= 0x30) ||
367 ent->driver_data == PCI_DM9102_ID) {
368 struct device_node *dp = pci_device_to_OF_node(pdev);
369
370 if (dp && of_get_property(dp, "local-mac-address", NULL)) {
371 pr_info("skipping on-board DM910x (use tulip)\n");
372 return -ENODEV;
373 }
374 }
375 #endif
376
377 /* Init network device */
378 dev = alloc_etherdev(sizeof(*db));
379 if (dev == NULL)
380 return -ENOMEM;
381 SET_NETDEV_DEV(dev, &pdev->dev);
382
383 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
384 pr_warn("32-bit PCI DMA not available\n");
385 err = -ENODEV;
386 goto err_out_free;
387 }
388
389 /* Enable Master/IO access, Disable memory access */
390 err = pci_enable_device(pdev);
391 if (err)
392 goto err_out_free;
393
394 if (!pci_resource_start(pdev, 0)) {
395 pr_err("I/O base is zero\n");
396 err = -ENODEV;
397 goto err_out_disable;
398 }
399
400 if (pci_resource_len(pdev, 0) < (CHK_IO_SIZE(pdev)) ) {
401 pr_err("Allocated I/O size too small\n");
402 err = -ENODEV;
403 goto err_out_disable;
404 }
405
406 #if 0 /* pci_{enable_device,set_master} sets minimum latency for us now */
407
408 /* Set Latency Timer 80h */
409 /* FIXME: setting values > 32 breaks some SiS 559x stuff.
410 Need a PCI quirk.. */
411
412 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
413 #endif
414
415 if (pci_request_regions(pdev, DRV_NAME)) {
416 pr_err("Failed to request PCI regions\n");
417 err = -ENODEV;
418 goto err_out_disable;
419 }
420
421 /* Init system & device */
422 db = netdev_priv(dev);
423
424 /* Allocate Tx/Rx descriptor memory */
425 db->desc_pool_ptr = dma_alloc_coherent(&pdev->dev,
426 sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20,
427 &db->desc_pool_dma_ptr, GFP_KERNEL);
428 if (!db->desc_pool_ptr) {
429 err = -ENOMEM;
430 goto err_out_res;
431 }
432
433 db->buf_pool_ptr = dma_alloc_coherent(&pdev->dev,
434 TX_BUF_ALLOC * TX_DESC_CNT + 4,
435 &db->buf_pool_dma_ptr, GFP_KERNEL);
436 if (!db->buf_pool_ptr) {
437 err = -ENOMEM;
438 goto err_out_free_desc;
439 }
440
441 db->first_tx_desc = (struct tx_desc *) db->desc_pool_ptr;
442 db->first_tx_desc_dma = db->desc_pool_dma_ptr;
443 db->buf_pool_start = db->buf_pool_ptr;
444 db->buf_pool_dma_start = db->buf_pool_dma_ptr;
445
446 db->chip_id = ent->driver_data;
447 /* IO type range. */
448 db->ioaddr = pci_iomap(pdev, 0, 0);
449 if (!db->ioaddr) {
450 err = -ENOMEM;
451 goto err_out_free_buf;
452 }
453
454 db->chip_revision = pdev->revision;
455 db->wol_mode = 0;
456
457 db->pdev = pdev;
458
459 pci_set_drvdata(pdev, dev);
460 dev->netdev_ops = &netdev_ops;
461 dev->ethtool_ops = &netdev_ethtool_ops;
462 netif_carrier_off(dev);
463 spin_lock_init(&db->lock);
464
465 pci_read_config_dword(pdev, 0x50, &pci_pmr);
466 pci_pmr &= 0x70000;
467 if ( (pci_pmr == 0x10000) && (db->chip_revision == 0x31) )
468 db->chip_type = 1; /* DM9102A E3 */
469 else
470 db->chip_type = 0;
471
472 /* read 64 word srom data */
473 for (i = 0; i < 64; i++) {
474 ((__le16 *) db->srom)[i] =
475 cpu_to_le16(read_srom_word(db->ioaddr, i));
476 }
477
478 /* Set Node address */
479 for (i = 0; i < 6; i++)
480 dev->dev_addr[i] = db->srom[20 + i];
481
482 err = register_netdev (dev);
483 if (err)
484 goto err_out_unmap;
485
486 dev_info(&dev->dev, "Davicom DM%04lx at pci%s, %pM, irq %d\n",
487 ent->driver_data >> 16,
488 pci_name(pdev), dev->dev_addr, pdev->irq);
489
490 pci_set_master(pdev);
491
492 return 0;
493
494 err_out_unmap:
495 pci_iounmap(pdev, db->ioaddr);
496 err_out_free_buf:
497 dma_free_coherent(&pdev->dev, TX_BUF_ALLOC * TX_DESC_CNT + 4,
498 db->buf_pool_ptr, db->buf_pool_dma_ptr);
499 err_out_free_desc:
500 dma_free_coherent(&pdev->dev,
501 sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20,
502 db->desc_pool_ptr, db->desc_pool_dma_ptr);
503 err_out_res:
504 pci_release_regions(pdev);
505 err_out_disable:
506 pci_disable_device(pdev);
507 err_out_free:
508 free_netdev(dev);
509
510 return err;
511 }
512
513
dmfe_remove_one(struct pci_dev * pdev)514 static void dmfe_remove_one(struct pci_dev *pdev)
515 {
516 struct net_device *dev = pci_get_drvdata(pdev);
517 struct dmfe_board_info *db = netdev_priv(dev);
518
519 DMFE_DBUG(0, "dmfe_remove_one()", 0);
520
521 if (dev) {
522
523 unregister_netdev(dev);
524 pci_iounmap(db->pdev, db->ioaddr);
525 dma_free_coherent(&db->pdev->dev,
526 sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20,
527 db->desc_pool_ptr, db->desc_pool_dma_ptr);
528 dma_free_coherent(&db->pdev->dev,
529 TX_BUF_ALLOC * TX_DESC_CNT + 4,
530 db->buf_pool_ptr, db->buf_pool_dma_ptr);
531 pci_release_regions(pdev);
532 free_netdev(dev); /* free board information */
533 }
534
535 DMFE_DBUG(0, "dmfe_remove_one() exit", 0);
536 }
537
538
539 /*
540 * Open the interface.
541 * The interface is opened whenever "ifconfig" actives it.
542 */
543
dmfe_open(struct net_device * dev)544 static int dmfe_open(struct net_device *dev)
545 {
546 struct dmfe_board_info *db = netdev_priv(dev);
547 const int irq = db->pdev->irq;
548 int ret;
549
550 DMFE_DBUG(0, "dmfe_open", 0);
551
552 ret = request_irq(irq, dmfe_interrupt, IRQF_SHARED, dev->name, dev);
553 if (ret)
554 return ret;
555
556 /* system variable init */
557 db->cr6_data = CR6_DEFAULT | dmfe_cr6_user_set;
558 db->tx_packet_cnt = 0;
559 db->tx_queue_cnt = 0;
560 db->rx_avail_cnt = 0;
561 db->wait_reset = 0;
562
563 db->first_in_callback = 0;
564 db->NIC_capability = 0xf; /* All capability*/
565 db->PHY_reg4 = 0x1e0;
566
567 /* CR6 operation mode decision */
568 if ( !chkmode || (db->chip_id == PCI_DM9132_ID) ||
569 (db->chip_revision >= 0x30) ) {
570 db->cr6_data |= DMFE_TXTH_256;
571 db->cr0_data = CR0_DEFAULT;
572 db->dm910x_chk_mode=4; /* Enter the normal mode */
573 } else {
574 db->cr6_data |= CR6_SFT; /* Store & Forward mode */
575 db->cr0_data = 0;
576 db->dm910x_chk_mode = 1; /* Enter the check mode */
577 }
578
579 /* Initialize DM910X board */
580 dmfe_init_dm910x(dev);
581
582 /* Active System Interface */
583 netif_wake_queue(dev);
584
585 /* set and active a timer process */
586 timer_setup(&db->timer, dmfe_timer, 0);
587 db->timer.expires = DMFE_TIMER_WUT + HZ * 2;
588 add_timer(&db->timer);
589
590 return 0;
591 }
592
593
594 /* Initialize DM910X board
595 * Reset DM910X board
596 * Initialize TX/Rx descriptor chain structure
597 * Send the set-up frame
598 * Enable Tx/Rx machine
599 */
600
dmfe_init_dm910x(struct net_device * dev)601 static void dmfe_init_dm910x(struct net_device *dev)
602 {
603 struct dmfe_board_info *db = netdev_priv(dev);
604 void __iomem *ioaddr = db->ioaddr;
605
606 DMFE_DBUG(0, "dmfe_init_dm910x()", 0);
607
608 /* Reset DM910x MAC controller */
609 dw32(DCR0, DM910X_RESET); /* RESET MAC */
610 udelay(100);
611 dw32(DCR0, db->cr0_data);
612 udelay(5);
613
614 /* Phy addr : DM910(A)2/DM9132/9801, phy address = 1 */
615 db->phy_addr = 1;
616
617 /* Parser SROM and media mode */
618 dmfe_parse_srom(db);
619 db->media_mode = dmfe_media_mode;
620
621 /* RESET Phyxcer Chip by GPR port bit 7 */
622 dw32(DCR12, 0x180); /* Let bit 7 output port */
623 if (db->chip_id == PCI_DM9009_ID) {
624 dw32(DCR12, 0x80); /* Issue RESET signal */
625 mdelay(300); /* Delay 300 ms */
626 }
627 dw32(DCR12, 0x0); /* Clear RESET signal */
628
629 /* Process Phyxcer Media Mode */
630 if ( !(db->media_mode & 0x10) ) /* Force 1M mode */
631 dmfe_set_phyxcer(db);
632
633 /* Media Mode Process */
634 if ( !(db->media_mode & DMFE_AUTO) )
635 db->op_mode = db->media_mode; /* Force Mode */
636
637 /* Initialize Transmit/Receive descriptor and CR3/4 */
638 dmfe_descriptor_init(dev);
639
640 /* Init CR6 to program DM910x operation */
641 update_cr6(db->cr6_data, ioaddr);
642
643 /* Send setup frame */
644 if (db->chip_id == PCI_DM9132_ID)
645 dm9132_id_table(dev); /* DM9132 */
646 else
647 send_filter_frame(dev); /* DM9102/DM9102A */
648
649 /* Init CR7, interrupt active bit */
650 db->cr7_data = CR7_DEFAULT;
651 dw32(DCR7, db->cr7_data);
652
653 /* Init CR15, Tx jabber and Rx watchdog timer */
654 dw32(DCR15, db->cr15_data);
655
656 /* Enable DM910X Tx/Rx function */
657 db->cr6_data |= CR6_RXSC | CR6_TXSC | 0x40000;
658 update_cr6(db->cr6_data, ioaddr);
659 }
660
661
662 /*
663 * Hardware start transmission.
664 * Send a packet to media from the upper layer.
665 */
666
dmfe_start_xmit(struct sk_buff * skb,struct net_device * dev)667 static netdev_tx_t dmfe_start_xmit(struct sk_buff *skb,
668 struct net_device *dev)
669 {
670 struct dmfe_board_info *db = netdev_priv(dev);
671 void __iomem *ioaddr = db->ioaddr;
672 struct tx_desc *txptr;
673 unsigned long flags;
674
675 DMFE_DBUG(0, "dmfe_start_xmit", 0);
676
677 /* Too large packet check */
678 if (skb->len > MAX_PACKET_SIZE) {
679 pr_err("big packet = %d\n", (u16)skb->len);
680 dev_kfree_skb_any(skb);
681 return NETDEV_TX_OK;
682 }
683
684 /* Resource flag check */
685 netif_stop_queue(dev);
686
687 spin_lock_irqsave(&db->lock, flags);
688
689 /* No Tx resource check, it never happen nromally */
690 if (db->tx_queue_cnt >= TX_FREE_DESC_CNT) {
691 spin_unlock_irqrestore(&db->lock, flags);
692 pr_err("No Tx resource %ld\n", db->tx_queue_cnt);
693 return NETDEV_TX_BUSY;
694 }
695
696 /* Disable NIC interrupt */
697 dw32(DCR7, 0);
698
699 /* transmit this packet */
700 txptr = db->tx_insert_ptr;
701 skb_copy_from_linear_data(skb, txptr->tx_buf_ptr, skb->len);
702 txptr->tdes1 = cpu_to_le32(0xe1000000 | skb->len);
703
704 /* Point to next transmit free descriptor */
705 db->tx_insert_ptr = txptr->next_tx_desc;
706
707 /* Transmit Packet Process */
708 if ( (!db->tx_queue_cnt) && (db->tx_packet_cnt < TX_MAX_SEND_CNT) ) {
709 txptr->tdes0 = cpu_to_le32(0x80000000); /* Set owner bit */
710 db->tx_packet_cnt++; /* Ready to send */
711 dw32(DCR1, 0x1); /* Issue Tx polling */
712 netif_trans_update(dev); /* saved time stamp */
713 } else {
714 db->tx_queue_cnt++; /* queue TX packet */
715 dw32(DCR1, 0x1); /* Issue Tx polling */
716 }
717
718 /* Tx resource check */
719 if ( db->tx_queue_cnt < TX_FREE_DESC_CNT )
720 netif_wake_queue(dev);
721
722 /* Restore CR7 to enable interrupt */
723 spin_unlock_irqrestore(&db->lock, flags);
724 dw32(DCR7, db->cr7_data);
725
726 /* free this SKB */
727 dev_consume_skb_any(skb);
728
729 return NETDEV_TX_OK;
730 }
731
732
733 /*
734 * Stop the interface.
735 * The interface is stopped when it is brought.
736 */
737
dmfe_stop(struct net_device * dev)738 static int dmfe_stop(struct net_device *dev)
739 {
740 struct dmfe_board_info *db = netdev_priv(dev);
741 void __iomem *ioaddr = db->ioaddr;
742
743 DMFE_DBUG(0, "dmfe_stop", 0);
744
745 /* disable system */
746 netif_stop_queue(dev);
747
748 /* deleted timer */
749 del_timer_sync(&db->timer);
750
751 /* Reset & stop DM910X board */
752 dw32(DCR0, DM910X_RESET);
753 udelay(100);
754 dmfe_phy_write(ioaddr, db->phy_addr, 0, 0x8000, db->chip_id);
755
756 /* free interrupt */
757 free_irq(db->pdev->irq, dev);
758
759 /* free allocated rx buffer */
760 dmfe_free_rxbuffer(db);
761
762 #if 0
763 /* show statistic counter */
764 printk("FU:%lx EC:%lx LC:%lx NC:%lx LOC:%lx TXJT:%lx RESET:%lx RCR8:%lx FAL:%lx TT:%lx\n",
765 db->tx_fifo_underrun, db->tx_excessive_collision,
766 db->tx_late_collision, db->tx_no_carrier, db->tx_loss_carrier,
767 db->tx_jabber_timeout, db->reset_count, db->reset_cr8,
768 db->reset_fatal, db->reset_TXtimeout);
769 #endif
770
771 return 0;
772 }
773
774
775 /*
776 * DM9102 insterrupt handler
777 * receive the packet to upper layer, free the transmitted packet
778 */
779
dmfe_interrupt(int irq,void * dev_id)780 static irqreturn_t dmfe_interrupt(int irq, void *dev_id)
781 {
782 struct net_device *dev = dev_id;
783 struct dmfe_board_info *db = netdev_priv(dev);
784 void __iomem *ioaddr = db->ioaddr;
785 unsigned long flags;
786
787 DMFE_DBUG(0, "dmfe_interrupt()", 0);
788
789 spin_lock_irqsave(&db->lock, flags);
790
791 /* Got DM910X status */
792 db->cr5_data = dr32(DCR5);
793 dw32(DCR5, db->cr5_data);
794 if ( !(db->cr5_data & 0xc1) ) {
795 spin_unlock_irqrestore(&db->lock, flags);
796 return IRQ_HANDLED;
797 }
798
799 /* Disable all interrupt in CR7 to solve the interrupt edge problem */
800 dw32(DCR7, 0);
801
802 /* Check system status */
803 if (db->cr5_data & 0x2000) {
804 /* system bus error happen */
805 DMFE_DBUG(1, "System bus error happen. CR5=", db->cr5_data);
806 db->reset_fatal++;
807 db->wait_reset = 1; /* Need to RESET */
808 spin_unlock_irqrestore(&db->lock, flags);
809 return IRQ_HANDLED;
810 }
811
812 /* Received the coming packet */
813 if ( (db->cr5_data & 0x40) && db->rx_avail_cnt )
814 dmfe_rx_packet(dev, db);
815
816 /* reallocate rx descriptor buffer */
817 if (db->rx_avail_cnt<RX_DESC_CNT)
818 allocate_rx_buffer(dev);
819
820 /* Free the transmitted descriptor */
821 if ( db->cr5_data & 0x01)
822 dmfe_free_tx_pkt(dev, db);
823
824 /* Mode Check */
825 if (db->dm910x_chk_mode & 0x2) {
826 db->dm910x_chk_mode = 0x4;
827 db->cr6_data |= 0x100;
828 update_cr6(db->cr6_data, ioaddr);
829 }
830
831 /* Restore CR7 to enable interrupt mask */
832 dw32(DCR7, db->cr7_data);
833
834 spin_unlock_irqrestore(&db->lock, flags);
835 return IRQ_HANDLED;
836 }
837
838
839 #ifdef CONFIG_NET_POLL_CONTROLLER
840 /*
841 * Polling 'interrupt' - used by things like netconsole to send skbs
842 * without having to re-enable interrupts. It's not called while
843 * the interrupt routine is executing.
844 */
845
poll_dmfe(struct net_device * dev)846 static void poll_dmfe (struct net_device *dev)
847 {
848 struct dmfe_board_info *db = netdev_priv(dev);
849 const int irq = db->pdev->irq;
850
851 /* disable_irq here is not very nice, but with the lockless
852 interrupt handler we have no other choice. */
853 disable_irq(irq);
854 dmfe_interrupt (irq, dev);
855 enable_irq(irq);
856 }
857 #endif
858
859 /*
860 * Free TX resource after TX complete
861 */
862
dmfe_free_tx_pkt(struct net_device * dev,struct dmfe_board_info * db)863 static void dmfe_free_tx_pkt(struct net_device *dev, struct dmfe_board_info *db)
864 {
865 struct tx_desc *txptr;
866 void __iomem *ioaddr = db->ioaddr;
867 u32 tdes0;
868
869 txptr = db->tx_remove_ptr;
870 while(db->tx_packet_cnt) {
871 tdes0 = le32_to_cpu(txptr->tdes0);
872 if (tdes0 & 0x80000000)
873 break;
874
875 /* A packet sent completed */
876 db->tx_packet_cnt--;
877 dev->stats.tx_packets++;
878
879 /* Transmit statistic counter */
880 if ( tdes0 != 0x7fffffff ) {
881 dev->stats.collisions += (tdes0 >> 3) & 0xf;
882 dev->stats.tx_bytes += le32_to_cpu(txptr->tdes1) & 0x7ff;
883 if (tdes0 & TDES0_ERR_MASK) {
884 dev->stats.tx_errors++;
885
886 if (tdes0 & 0x0002) { /* UnderRun */
887 db->tx_fifo_underrun++;
888 if ( !(db->cr6_data & CR6_SFT) ) {
889 db->cr6_data = db->cr6_data | CR6_SFT;
890 update_cr6(db->cr6_data, ioaddr);
891 }
892 }
893 if (tdes0 & 0x0100)
894 db->tx_excessive_collision++;
895 if (tdes0 & 0x0200)
896 db->tx_late_collision++;
897 if (tdes0 & 0x0400)
898 db->tx_no_carrier++;
899 if (tdes0 & 0x0800)
900 db->tx_loss_carrier++;
901 if (tdes0 & 0x4000)
902 db->tx_jabber_timeout++;
903 }
904 }
905
906 txptr = txptr->next_tx_desc;
907 }/* End of while */
908
909 /* Update TX remove pointer to next */
910 db->tx_remove_ptr = txptr;
911
912 /* Send the Tx packet in queue */
913 if ( (db->tx_packet_cnt < TX_MAX_SEND_CNT) && db->tx_queue_cnt ) {
914 txptr->tdes0 = cpu_to_le32(0x80000000); /* Set owner bit */
915 db->tx_packet_cnt++; /* Ready to send */
916 db->tx_queue_cnt--;
917 dw32(DCR1, 0x1); /* Issue Tx polling */
918 netif_trans_update(dev); /* saved time stamp */
919 }
920
921 /* Resource available check */
922 if ( db->tx_queue_cnt < TX_WAKE_DESC_CNT )
923 netif_wake_queue(dev); /* Active upper layer, send again */
924 }
925
926
927 /*
928 * Calculate the CRC valude of the Rx packet
929 * flag = 1 : return the reverse CRC (for the received packet CRC)
930 * 0 : return the normal CRC (for Hash Table index)
931 */
932
cal_CRC(unsigned char * Data,unsigned int Len,u8 flag)933 static inline u32 cal_CRC(unsigned char * Data, unsigned int Len, u8 flag)
934 {
935 u32 crc = crc32(~0, Data, Len);
936 if (flag) crc = ~crc;
937 return crc;
938 }
939
940
941 /*
942 * Receive the come packet and pass to upper layer
943 */
944
dmfe_rx_packet(struct net_device * dev,struct dmfe_board_info * db)945 static void dmfe_rx_packet(struct net_device *dev, struct dmfe_board_info *db)
946 {
947 struct rx_desc *rxptr;
948 struct sk_buff *skb, *newskb;
949 int rxlen;
950 u32 rdes0;
951
952 rxptr = db->rx_ready_ptr;
953
954 while(db->rx_avail_cnt) {
955 rdes0 = le32_to_cpu(rxptr->rdes0);
956 if (rdes0 & 0x80000000) /* packet owner check */
957 break;
958
959 db->rx_avail_cnt--;
960 db->interval_rx_cnt++;
961
962 dma_unmap_single(&db->pdev->dev, le32_to_cpu(rxptr->rdes2),
963 RX_ALLOC_SIZE, DMA_FROM_DEVICE);
964
965 if ( (rdes0 & 0x300) != 0x300) {
966 /* A packet without First/Last flag */
967 /* reuse this SKB */
968 DMFE_DBUG(0, "Reuse SK buffer, rdes0", rdes0);
969 dmfe_reuse_skb(db, rxptr->rx_skb_ptr);
970 } else {
971 /* A packet with First/Last flag */
972 rxlen = ( (rdes0 >> 16) & 0x3fff) - 4;
973
974 /* error summary bit check */
975 if (rdes0 & 0x8000) {
976 /* This is a error packet */
977 dev->stats.rx_errors++;
978 if (rdes0 & 1)
979 dev->stats.rx_fifo_errors++;
980 if (rdes0 & 2)
981 dev->stats.rx_crc_errors++;
982 if (rdes0 & 0x80)
983 dev->stats.rx_length_errors++;
984 }
985
986 if ( !(rdes0 & 0x8000) ||
987 ((db->cr6_data & CR6_PM) && (rxlen>6)) ) {
988 skb = rxptr->rx_skb_ptr;
989
990 /* Received Packet CRC check need or not */
991 if ( (db->dm910x_chk_mode & 1) &&
992 (cal_CRC(skb->data, rxlen, 1) !=
993 (*(u32 *) (skb->data+rxlen) ))) { /* FIXME (?) */
994 /* Found a error received packet */
995 dmfe_reuse_skb(db, rxptr->rx_skb_ptr);
996 db->dm910x_chk_mode = 3;
997 } else {
998 /* Good packet, send to upper layer */
999 /* Shorst packet used new SKB */
1000 if ((rxlen < RX_COPY_SIZE) &&
1001 ((newskb = netdev_alloc_skb(dev, rxlen + 2))
1002 != NULL)) {
1003
1004 skb = newskb;
1005 /* size less than COPY_SIZE, allocate a rxlen SKB */
1006 skb_reserve(skb, 2); /* 16byte align */
1007 skb_copy_from_linear_data(rxptr->rx_skb_ptr,
1008 skb_put(skb, rxlen),
1009 rxlen);
1010 dmfe_reuse_skb(db, rxptr->rx_skb_ptr);
1011 } else
1012 skb_put(skb, rxlen);
1013
1014 skb->protocol = eth_type_trans(skb, dev);
1015 netif_rx(skb);
1016 dev->stats.rx_packets++;
1017 dev->stats.rx_bytes += rxlen;
1018 }
1019 } else {
1020 /* Reuse SKB buffer when the packet is error */
1021 DMFE_DBUG(0, "Reuse SK buffer, rdes0", rdes0);
1022 dmfe_reuse_skb(db, rxptr->rx_skb_ptr);
1023 }
1024 }
1025
1026 rxptr = rxptr->next_rx_desc;
1027 }
1028
1029 db->rx_ready_ptr = rxptr;
1030 }
1031
1032 /*
1033 * Set DM910X multicast address
1034 */
1035
dmfe_set_filter_mode(struct net_device * dev)1036 static void dmfe_set_filter_mode(struct net_device *dev)
1037 {
1038 struct dmfe_board_info *db = netdev_priv(dev);
1039 unsigned long flags;
1040 int mc_count = netdev_mc_count(dev);
1041
1042 DMFE_DBUG(0, "dmfe_set_filter_mode()", 0);
1043 spin_lock_irqsave(&db->lock, flags);
1044
1045 if (dev->flags & IFF_PROMISC) {
1046 DMFE_DBUG(0, "Enable PROM Mode", 0);
1047 db->cr6_data |= CR6_PM | CR6_PBF;
1048 update_cr6(db->cr6_data, db->ioaddr);
1049 spin_unlock_irqrestore(&db->lock, flags);
1050 return;
1051 }
1052
1053 if (dev->flags & IFF_ALLMULTI || mc_count > DMFE_MAX_MULTICAST) {
1054 DMFE_DBUG(0, "Pass all multicast address", mc_count);
1055 db->cr6_data &= ~(CR6_PM | CR6_PBF);
1056 db->cr6_data |= CR6_PAM;
1057 spin_unlock_irqrestore(&db->lock, flags);
1058 return;
1059 }
1060
1061 DMFE_DBUG(0, "Set multicast address", mc_count);
1062 if (db->chip_id == PCI_DM9132_ID)
1063 dm9132_id_table(dev); /* DM9132 */
1064 else
1065 send_filter_frame(dev); /* DM9102/DM9102A */
1066 spin_unlock_irqrestore(&db->lock, flags);
1067 }
1068
1069 /*
1070 * Ethtool interace
1071 */
1072
dmfe_ethtool_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)1073 static void dmfe_ethtool_get_drvinfo(struct net_device *dev,
1074 struct ethtool_drvinfo *info)
1075 {
1076 struct dmfe_board_info *np = netdev_priv(dev);
1077
1078 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
1079 strlcpy(info->bus_info, pci_name(np->pdev), sizeof(info->bus_info));
1080 }
1081
dmfe_ethtool_set_wol(struct net_device * dev,struct ethtool_wolinfo * wolinfo)1082 static int dmfe_ethtool_set_wol(struct net_device *dev,
1083 struct ethtool_wolinfo *wolinfo)
1084 {
1085 struct dmfe_board_info *db = netdev_priv(dev);
1086
1087 if (wolinfo->wolopts & (WAKE_UCAST | WAKE_MCAST | WAKE_BCAST |
1088 WAKE_ARP | WAKE_MAGICSECURE))
1089 return -EOPNOTSUPP;
1090
1091 db->wol_mode = wolinfo->wolopts;
1092 return 0;
1093 }
1094
dmfe_ethtool_get_wol(struct net_device * dev,struct ethtool_wolinfo * wolinfo)1095 static void dmfe_ethtool_get_wol(struct net_device *dev,
1096 struct ethtool_wolinfo *wolinfo)
1097 {
1098 struct dmfe_board_info *db = netdev_priv(dev);
1099
1100 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
1101 wolinfo->wolopts = db->wol_mode;
1102 }
1103
1104
1105 static const struct ethtool_ops netdev_ethtool_ops = {
1106 .get_drvinfo = dmfe_ethtool_get_drvinfo,
1107 .get_link = ethtool_op_get_link,
1108 .set_wol = dmfe_ethtool_set_wol,
1109 .get_wol = dmfe_ethtool_get_wol,
1110 };
1111
1112 /*
1113 * A periodic timer routine
1114 * Dynamic media sense, allocate Rx buffer...
1115 */
1116
dmfe_timer(struct timer_list * t)1117 static void dmfe_timer(struct timer_list *t)
1118 {
1119 struct dmfe_board_info *db = from_timer(db, t, timer);
1120 struct net_device *dev = pci_get_drvdata(db->pdev);
1121 void __iomem *ioaddr = db->ioaddr;
1122 u32 tmp_cr8;
1123 unsigned char tmp_cr12;
1124 unsigned long flags;
1125
1126 int link_ok, link_ok_phy;
1127
1128 DMFE_DBUG(0, "dmfe_timer()", 0);
1129 spin_lock_irqsave(&db->lock, flags);
1130
1131 /* Media mode process when Link OK before enter this route */
1132 if (db->first_in_callback == 0) {
1133 db->first_in_callback = 1;
1134 if (db->chip_type && (db->chip_id==PCI_DM9102_ID)) {
1135 db->cr6_data &= ~0x40000;
1136 update_cr6(db->cr6_data, ioaddr);
1137 dmfe_phy_write(ioaddr, db->phy_addr, 0, 0x1000, db->chip_id);
1138 db->cr6_data |= 0x40000;
1139 update_cr6(db->cr6_data, ioaddr);
1140 db->timer.expires = DMFE_TIMER_WUT + HZ * 2;
1141 add_timer(&db->timer);
1142 spin_unlock_irqrestore(&db->lock, flags);
1143 return;
1144 }
1145 }
1146
1147
1148 /* Operating Mode Check */
1149 if ( (db->dm910x_chk_mode & 0x1) &&
1150 (dev->stats.rx_packets > MAX_CHECK_PACKET) )
1151 db->dm910x_chk_mode = 0x4;
1152
1153 /* Dynamic reset DM910X : system error or transmit time-out */
1154 tmp_cr8 = dr32(DCR8);
1155 if ( (db->interval_rx_cnt==0) && (tmp_cr8) ) {
1156 db->reset_cr8++;
1157 db->wait_reset = 1;
1158 }
1159 db->interval_rx_cnt = 0;
1160
1161 /* TX polling kick monitor */
1162 if ( db->tx_packet_cnt &&
1163 time_after(jiffies, dev_trans_start(dev) + DMFE_TX_KICK) ) {
1164 dw32(DCR1, 0x1); /* Tx polling again */
1165
1166 /* TX Timeout */
1167 if (time_after(jiffies, dev_trans_start(dev) + DMFE_TX_TIMEOUT) ) {
1168 db->reset_TXtimeout++;
1169 db->wait_reset = 1;
1170 dev_warn(&dev->dev, "Tx timeout - resetting\n");
1171 }
1172 }
1173
1174 if (db->wait_reset) {
1175 DMFE_DBUG(0, "Dynamic Reset device", db->tx_packet_cnt);
1176 db->reset_count++;
1177 dmfe_dynamic_reset(dev);
1178 db->first_in_callback = 0;
1179 db->timer.expires = DMFE_TIMER_WUT;
1180 add_timer(&db->timer);
1181 spin_unlock_irqrestore(&db->lock, flags);
1182 return;
1183 }
1184
1185 /* Link status check, Dynamic media type change */
1186 if (db->chip_id == PCI_DM9132_ID)
1187 tmp_cr12 = dr8(DCR9 + 3); /* DM9132 */
1188 else
1189 tmp_cr12 = dr8(DCR12); /* DM9102/DM9102A */
1190
1191 if ( ((db->chip_id == PCI_DM9102_ID) &&
1192 (db->chip_revision == 0x30)) ||
1193 ((db->chip_id == PCI_DM9132_ID) &&
1194 (db->chip_revision == 0x10)) ) {
1195 /* DM9102A Chip */
1196 if (tmp_cr12 & 2)
1197 link_ok = 0;
1198 else
1199 link_ok = 1;
1200 }
1201 else
1202 /*0x43 is used instead of 0x3 because bit 6 should represent
1203 link status of external PHY */
1204 link_ok = (tmp_cr12 & 0x43) ? 1 : 0;
1205
1206
1207 /* If chip reports that link is failed it could be because external
1208 PHY link status pin is not connected correctly to chip
1209 To be sure ask PHY too.
1210 */
1211
1212 /* need a dummy read because of PHY's register latch*/
1213 dmfe_phy_read (db->ioaddr, db->phy_addr, 1, db->chip_id);
1214 link_ok_phy = (dmfe_phy_read (db->ioaddr,
1215 db->phy_addr, 1, db->chip_id) & 0x4) ? 1 : 0;
1216
1217 if (link_ok_phy != link_ok) {
1218 DMFE_DBUG (0, "PHY and chip report different link status", 0);
1219 link_ok = link_ok | link_ok_phy;
1220 }
1221
1222 if ( !link_ok && netif_carrier_ok(dev)) {
1223 /* Link Failed */
1224 DMFE_DBUG(0, "Link Failed", tmp_cr12);
1225 netif_carrier_off(dev);
1226
1227 /* For Force 10/100M Half/Full mode: Enable Auto-Nego mode */
1228 /* AUTO or force 1M Homerun/Longrun don't need */
1229 if ( !(db->media_mode & 0x38) )
1230 dmfe_phy_write(db->ioaddr, db->phy_addr,
1231 0, 0x1000, db->chip_id);
1232
1233 /* AUTO mode, if INT phyxcer link failed, select EXT device */
1234 if (db->media_mode & DMFE_AUTO) {
1235 /* 10/100M link failed, used 1M Home-Net */
1236 db->cr6_data|=0x00040000; /* bit18=1, MII */
1237 db->cr6_data&=~0x00000200; /* bit9=0, HD mode */
1238 update_cr6(db->cr6_data, ioaddr);
1239 }
1240 } else if (!netif_carrier_ok(dev)) {
1241
1242 DMFE_DBUG(0, "Link link OK", tmp_cr12);
1243
1244 /* Auto Sense Speed */
1245 if ( !(db->media_mode & DMFE_AUTO) || !dmfe_sense_speed(db)) {
1246 netif_carrier_on(dev);
1247 SHOW_MEDIA_TYPE(db->op_mode);
1248 }
1249
1250 dmfe_process_mode(db);
1251 }
1252
1253 /* HPNA remote command check */
1254 if (db->HPNA_command & 0xf00) {
1255 db->HPNA_timer--;
1256 if (!db->HPNA_timer)
1257 dmfe_HPNA_remote_cmd_chk(db);
1258 }
1259
1260 /* Timer active again */
1261 db->timer.expires = DMFE_TIMER_WUT;
1262 add_timer(&db->timer);
1263 spin_unlock_irqrestore(&db->lock, flags);
1264 }
1265
1266
1267 /*
1268 * Dynamic reset the DM910X board
1269 * Stop DM910X board
1270 * Free Tx/Rx allocated memory
1271 * Reset DM910X board
1272 * Re-initialize DM910X board
1273 */
1274
dmfe_dynamic_reset(struct net_device * dev)1275 static void dmfe_dynamic_reset(struct net_device *dev)
1276 {
1277 struct dmfe_board_info *db = netdev_priv(dev);
1278 void __iomem *ioaddr = db->ioaddr;
1279
1280 DMFE_DBUG(0, "dmfe_dynamic_reset()", 0);
1281
1282 /* Sopt MAC controller */
1283 db->cr6_data &= ~(CR6_RXSC | CR6_TXSC); /* Disable Tx/Rx */
1284 update_cr6(db->cr6_data, ioaddr);
1285 dw32(DCR7, 0); /* Disable Interrupt */
1286 dw32(DCR5, dr32(DCR5));
1287
1288 /* Disable upper layer interface */
1289 netif_stop_queue(dev);
1290
1291 /* Free Rx Allocate buffer */
1292 dmfe_free_rxbuffer(db);
1293
1294 /* system variable init */
1295 db->tx_packet_cnt = 0;
1296 db->tx_queue_cnt = 0;
1297 db->rx_avail_cnt = 0;
1298 netif_carrier_off(dev);
1299 db->wait_reset = 0;
1300
1301 /* Re-initialize DM910X board */
1302 dmfe_init_dm910x(dev);
1303
1304 /* Restart upper layer interface */
1305 netif_wake_queue(dev);
1306 }
1307
1308
1309 /*
1310 * free all allocated rx buffer
1311 */
1312
dmfe_free_rxbuffer(struct dmfe_board_info * db)1313 static void dmfe_free_rxbuffer(struct dmfe_board_info * db)
1314 {
1315 DMFE_DBUG(0, "dmfe_free_rxbuffer()", 0);
1316
1317 /* free allocated rx buffer */
1318 while (db->rx_avail_cnt) {
1319 dev_kfree_skb(db->rx_ready_ptr->rx_skb_ptr);
1320 db->rx_ready_ptr = db->rx_ready_ptr->next_rx_desc;
1321 db->rx_avail_cnt--;
1322 }
1323 }
1324
1325
1326 /*
1327 * Reuse the SK buffer
1328 */
1329
dmfe_reuse_skb(struct dmfe_board_info * db,struct sk_buff * skb)1330 static void dmfe_reuse_skb(struct dmfe_board_info *db, struct sk_buff * skb)
1331 {
1332 struct rx_desc *rxptr = db->rx_insert_ptr;
1333
1334 if (!(rxptr->rdes0 & cpu_to_le32(0x80000000))) {
1335 rxptr->rx_skb_ptr = skb;
1336 rxptr->rdes2 = cpu_to_le32(dma_map_single(&db->pdev->dev, skb->data,
1337 RX_ALLOC_SIZE, DMA_FROM_DEVICE));
1338 wmb();
1339 rxptr->rdes0 = cpu_to_le32(0x80000000);
1340 db->rx_avail_cnt++;
1341 db->rx_insert_ptr = rxptr->next_rx_desc;
1342 } else
1343 DMFE_DBUG(0, "SK Buffer reuse method error", db->rx_avail_cnt);
1344 }
1345
1346
1347 /*
1348 * Initialize transmit/Receive descriptor
1349 * Using Chain structure, and allocate Tx/Rx buffer
1350 */
1351
dmfe_descriptor_init(struct net_device * dev)1352 static void dmfe_descriptor_init(struct net_device *dev)
1353 {
1354 struct dmfe_board_info *db = netdev_priv(dev);
1355 void __iomem *ioaddr = db->ioaddr;
1356 struct tx_desc *tmp_tx;
1357 struct rx_desc *tmp_rx;
1358 unsigned char *tmp_buf;
1359 dma_addr_t tmp_tx_dma, tmp_rx_dma;
1360 dma_addr_t tmp_buf_dma;
1361 int i;
1362
1363 DMFE_DBUG(0, "dmfe_descriptor_init()", 0);
1364
1365 /* tx descriptor start pointer */
1366 db->tx_insert_ptr = db->first_tx_desc;
1367 db->tx_remove_ptr = db->first_tx_desc;
1368 dw32(DCR4, db->first_tx_desc_dma); /* TX DESC address */
1369
1370 /* rx descriptor start pointer */
1371 db->first_rx_desc = (void *)db->first_tx_desc +
1372 sizeof(struct tx_desc) * TX_DESC_CNT;
1373
1374 db->first_rx_desc_dma = db->first_tx_desc_dma +
1375 sizeof(struct tx_desc) * TX_DESC_CNT;
1376 db->rx_insert_ptr = db->first_rx_desc;
1377 db->rx_ready_ptr = db->first_rx_desc;
1378 dw32(DCR3, db->first_rx_desc_dma); /* RX DESC address */
1379
1380 /* Init Transmit chain */
1381 tmp_buf = db->buf_pool_start;
1382 tmp_buf_dma = db->buf_pool_dma_start;
1383 tmp_tx_dma = db->first_tx_desc_dma;
1384 for (tmp_tx = db->first_tx_desc, i = 0; i < TX_DESC_CNT; i++, tmp_tx++) {
1385 tmp_tx->tx_buf_ptr = tmp_buf;
1386 tmp_tx->tdes0 = cpu_to_le32(0);
1387 tmp_tx->tdes1 = cpu_to_le32(0x81000000); /* IC, chain */
1388 tmp_tx->tdes2 = cpu_to_le32(tmp_buf_dma);
1389 tmp_tx_dma += sizeof(struct tx_desc);
1390 tmp_tx->tdes3 = cpu_to_le32(tmp_tx_dma);
1391 tmp_tx->next_tx_desc = tmp_tx + 1;
1392 tmp_buf = tmp_buf + TX_BUF_ALLOC;
1393 tmp_buf_dma = tmp_buf_dma + TX_BUF_ALLOC;
1394 }
1395 (--tmp_tx)->tdes3 = cpu_to_le32(db->first_tx_desc_dma);
1396 tmp_tx->next_tx_desc = db->first_tx_desc;
1397
1398 /* Init Receive descriptor chain */
1399 tmp_rx_dma=db->first_rx_desc_dma;
1400 for (tmp_rx = db->first_rx_desc, i = 0; i < RX_DESC_CNT; i++, tmp_rx++) {
1401 tmp_rx->rdes0 = cpu_to_le32(0);
1402 tmp_rx->rdes1 = cpu_to_le32(0x01000600);
1403 tmp_rx_dma += sizeof(struct rx_desc);
1404 tmp_rx->rdes3 = cpu_to_le32(tmp_rx_dma);
1405 tmp_rx->next_rx_desc = tmp_rx + 1;
1406 }
1407 (--tmp_rx)->rdes3 = cpu_to_le32(db->first_rx_desc_dma);
1408 tmp_rx->next_rx_desc = db->first_rx_desc;
1409
1410 /* pre-allocate Rx buffer */
1411 allocate_rx_buffer(dev);
1412 }
1413
1414
1415 /*
1416 * Update CR6 value
1417 * Firstly stop DM910X , then written value and start
1418 */
1419
update_cr6(u32 cr6_data,void __iomem * ioaddr)1420 static void update_cr6(u32 cr6_data, void __iomem *ioaddr)
1421 {
1422 u32 cr6_tmp;
1423
1424 cr6_tmp = cr6_data & ~0x2002; /* stop Tx/Rx */
1425 dw32(DCR6, cr6_tmp);
1426 udelay(5);
1427 dw32(DCR6, cr6_data);
1428 udelay(5);
1429 }
1430
1431
1432 /*
1433 * Send a setup frame for DM9132
1434 * This setup frame initialize DM910X address filter mode
1435 */
1436
dm9132_id_table(struct net_device * dev)1437 static void dm9132_id_table(struct net_device *dev)
1438 {
1439 struct dmfe_board_info *db = netdev_priv(dev);
1440 void __iomem *ioaddr = db->ioaddr + 0xc0;
1441 u16 *addrptr = (u16 *)dev->dev_addr;
1442 struct netdev_hw_addr *ha;
1443 u16 i, hash_table[4];
1444
1445 /* Node address */
1446 for (i = 0; i < 3; i++) {
1447 dw16(0, addrptr[i]);
1448 ioaddr += 4;
1449 }
1450
1451 /* Clear Hash Table */
1452 memset(hash_table, 0, sizeof(hash_table));
1453
1454 /* broadcast address */
1455 hash_table[3] = 0x8000;
1456
1457 /* the multicast address in Hash Table : 64 bits */
1458 netdev_for_each_mc_addr(ha, dev) {
1459 u32 hash_val = cal_CRC((char *)ha->addr, 6, 0) & 0x3f;
1460
1461 hash_table[hash_val / 16] |= (u16) 1 << (hash_val % 16);
1462 }
1463
1464 /* Write the hash table to MAC MD table */
1465 for (i = 0; i < 4; i++, ioaddr += 4)
1466 dw16(0, hash_table[i]);
1467 }
1468
1469
1470 /*
1471 * Send a setup frame for DM9102/DM9102A
1472 * This setup frame initialize DM910X address filter mode
1473 */
1474
send_filter_frame(struct net_device * dev)1475 static void send_filter_frame(struct net_device *dev)
1476 {
1477 struct dmfe_board_info *db = netdev_priv(dev);
1478 struct netdev_hw_addr *ha;
1479 struct tx_desc *txptr;
1480 u16 * addrptr;
1481 u32 * suptr;
1482 int i;
1483
1484 DMFE_DBUG(0, "send_filter_frame()", 0);
1485
1486 txptr = db->tx_insert_ptr;
1487 suptr = (u32 *) txptr->tx_buf_ptr;
1488
1489 /* Node address */
1490 addrptr = (u16 *) dev->dev_addr;
1491 *suptr++ = addrptr[0];
1492 *suptr++ = addrptr[1];
1493 *suptr++ = addrptr[2];
1494
1495 /* broadcast address */
1496 *suptr++ = 0xffff;
1497 *suptr++ = 0xffff;
1498 *suptr++ = 0xffff;
1499
1500 /* fit the multicast address */
1501 netdev_for_each_mc_addr(ha, dev) {
1502 addrptr = (u16 *) ha->addr;
1503 *suptr++ = addrptr[0];
1504 *suptr++ = addrptr[1];
1505 *suptr++ = addrptr[2];
1506 }
1507
1508 for (i = netdev_mc_count(dev); i < 14; i++) {
1509 *suptr++ = 0xffff;
1510 *suptr++ = 0xffff;
1511 *suptr++ = 0xffff;
1512 }
1513
1514 /* prepare the setup frame */
1515 db->tx_insert_ptr = txptr->next_tx_desc;
1516 txptr->tdes1 = cpu_to_le32(0x890000c0);
1517
1518 /* Resource Check and Send the setup packet */
1519 if (!db->tx_packet_cnt) {
1520 void __iomem *ioaddr = db->ioaddr;
1521
1522 /* Resource Empty */
1523 db->tx_packet_cnt++;
1524 txptr->tdes0 = cpu_to_le32(0x80000000);
1525 update_cr6(db->cr6_data | 0x2000, ioaddr);
1526 dw32(DCR1, 0x1); /* Issue Tx polling */
1527 update_cr6(db->cr6_data, ioaddr);
1528 netif_trans_update(dev);
1529 } else
1530 db->tx_queue_cnt++; /* Put in TX queue */
1531 }
1532
1533
1534 /*
1535 * Allocate rx buffer,
1536 * As possible as allocate maxiumn Rx buffer
1537 */
1538
allocate_rx_buffer(struct net_device * dev)1539 static void allocate_rx_buffer(struct net_device *dev)
1540 {
1541 struct dmfe_board_info *db = netdev_priv(dev);
1542 struct rx_desc *rxptr;
1543 struct sk_buff *skb;
1544
1545 rxptr = db->rx_insert_ptr;
1546
1547 while(db->rx_avail_cnt < RX_DESC_CNT) {
1548 if ( ( skb = netdev_alloc_skb(dev, RX_ALLOC_SIZE) ) == NULL )
1549 break;
1550 rxptr->rx_skb_ptr = skb; /* FIXME (?) */
1551 rxptr->rdes2 = cpu_to_le32(dma_map_single(&db->pdev->dev, skb->data,
1552 RX_ALLOC_SIZE, DMA_FROM_DEVICE));
1553 wmb();
1554 rxptr->rdes0 = cpu_to_le32(0x80000000);
1555 rxptr = rxptr->next_rx_desc;
1556 db->rx_avail_cnt++;
1557 }
1558
1559 db->rx_insert_ptr = rxptr;
1560 }
1561
srom_clk_write(void __iomem * ioaddr,u32 data)1562 static void srom_clk_write(void __iomem *ioaddr, u32 data)
1563 {
1564 static const u32 cmd[] = {
1565 CR9_SROM_READ | CR9_SRCS,
1566 CR9_SROM_READ | CR9_SRCS | CR9_SRCLK,
1567 CR9_SROM_READ | CR9_SRCS
1568 };
1569 int i;
1570
1571 for (i = 0; i < ARRAY_SIZE(cmd); i++) {
1572 dw32(DCR9, data | cmd[i]);
1573 udelay(5);
1574 }
1575 }
1576
1577 /*
1578 * Read one word data from the serial ROM
1579 */
read_srom_word(void __iomem * ioaddr,int offset)1580 static u16 read_srom_word(void __iomem *ioaddr, int offset)
1581 {
1582 u16 srom_data;
1583 int i;
1584
1585 dw32(DCR9, CR9_SROM_READ);
1586 udelay(5);
1587 dw32(DCR9, CR9_SROM_READ | CR9_SRCS);
1588 udelay(5);
1589
1590 /* Send the Read Command 110b */
1591 srom_clk_write(ioaddr, SROM_DATA_1);
1592 srom_clk_write(ioaddr, SROM_DATA_1);
1593 srom_clk_write(ioaddr, SROM_DATA_0);
1594
1595 /* Send the offset */
1596 for (i = 5; i >= 0; i--) {
1597 srom_data = (offset & (1 << i)) ? SROM_DATA_1 : SROM_DATA_0;
1598 srom_clk_write(ioaddr, srom_data);
1599 }
1600
1601 dw32(DCR9, CR9_SROM_READ | CR9_SRCS);
1602 udelay(5);
1603
1604 for (i = 16; i > 0; i--) {
1605 dw32(DCR9, CR9_SROM_READ | CR9_SRCS | CR9_SRCLK);
1606 udelay(5);
1607 srom_data = (srom_data << 1) |
1608 ((dr32(DCR9) & CR9_CRDOUT) ? 1 : 0);
1609 dw32(DCR9, CR9_SROM_READ | CR9_SRCS);
1610 udelay(5);
1611 }
1612
1613 dw32(DCR9, CR9_SROM_READ);
1614 udelay(5);
1615 return srom_data;
1616 }
1617
1618
1619 /*
1620 * Auto sense the media mode
1621 */
1622
dmfe_sense_speed(struct dmfe_board_info * db)1623 static u8 dmfe_sense_speed(struct dmfe_board_info *db)
1624 {
1625 void __iomem *ioaddr = db->ioaddr;
1626 u8 ErrFlag = 0;
1627 u16 phy_mode;
1628
1629 /* CR6 bit18=0, select 10/100M */
1630 update_cr6(db->cr6_data & ~0x40000, ioaddr);
1631
1632 phy_mode = dmfe_phy_read(db->ioaddr, db->phy_addr, 1, db->chip_id);
1633 phy_mode = dmfe_phy_read(db->ioaddr, db->phy_addr, 1, db->chip_id);
1634
1635 if ( (phy_mode & 0x24) == 0x24 ) {
1636 if (db->chip_id == PCI_DM9132_ID) /* DM9132 */
1637 phy_mode = dmfe_phy_read(db->ioaddr,
1638 db->phy_addr, 7, db->chip_id) & 0xf000;
1639 else /* DM9102/DM9102A */
1640 phy_mode = dmfe_phy_read(db->ioaddr,
1641 db->phy_addr, 17, db->chip_id) & 0xf000;
1642 switch (phy_mode) {
1643 case 0x1000: db->op_mode = DMFE_10MHF; break;
1644 case 0x2000: db->op_mode = DMFE_10MFD; break;
1645 case 0x4000: db->op_mode = DMFE_100MHF; break;
1646 case 0x8000: db->op_mode = DMFE_100MFD; break;
1647 default: db->op_mode = DMFE_10MHF;
1648 ErrFlag = 1;
1649 break;
1650 }
1651 } else {
1652 db->op_mode = DMFE_10MHF;
1653 DMFE_DBUG(0, "Link Failed :", phy_mode);
1654 ErrFlag = 1;
1655 }
1656
1657 return ErrFlag;
1658 }
1659
1660
1661 /*
1662 * Set 10/100 phyxcer capability
1663 * AUTO mode : phyxcer register4 is NIC capability
1664 * Force mode: phyxcer register4 is the force media
1665 */
1666
dmfe_set_phyxcer(struct dmfe_board_info * db)1667 static void dmfe_set_phyxcer(struct dmfe_board_info *db)
1668 {
1669 void __iomem *ioaddr = db->ioaddr;
1670 u16 phy_reg;
1671
1672 /* Select 10/100M phyxcer */
1673 db->cr6_data &= ~0x40000;
1674 update_cr6(db->cr6_data, ioaddr);
1675
1676 /* DM9009 Chip: Phyxcer reg18 bit12=0 */
1677 if (db->chip_id == PCI_DM9009_ID) {
1678 phy_reg = dmfe_phy_read(db->ioaddr,
1679 db->phy_addr, 18, db->chip_id) & ~0x1000;
1680
1681 dmfe_phy_write(db->ioaddr,
1682 db->phy_addr, 18, phy_reg, db->chip_id);
1683 }
1684
1685 /* Phyxcer capability setting */
1686 phy_reg = dmfe_phy_read(db->ioaddr, db->phy_addr, 4, db->chip_id) & ~0x01e0;
1687
1688 if (db->media_mode & DMFE_AUTO) {
1689 /* AUTO Mode */
1690 phy_reg |= db->PHY_reg4;
1691 } else {
1692 /* Force Mode */
1693 switch(db->media_mode) {
1694 case DMFE_10MHF: phy_reg |= 0x20; break;
1695 case DMFE_10MFD: phy_reg |= 0x40; break;
1696 case DMFE_100MHF: phy_reg |= 0x80; break;
1697 case DMFE_100MFD: phy_reg |= 0x100; break;
1698 }
1699 if (db->chip_id == PCI_DM9009_ID) phy_reg &= 0x61;
1700 }
1701
1702 /* Write new capability to Phyxcer Reg4 */
1703 if ( !(phy_reg & 0x01e0)) {
1704 phy_reg|=db->PHY_reg4;
1705 db->media_mode|=DMFE_AUTO;
1706 }
1707 dmfe_phy_write(db->ioaddr, db->phy_addr, 4, phy_reg, db->chip_id);
1708
1709 /* Restart Auto-Negotiation */
1710 if ( db->chip_type && (db->chip_id == PCI_DM9102_ID) )
1711 dmfe_phy_write(db->ioaddr, db->phy_addr, 0, 0x1800, db->chip_id);
1712 if ( !db->chip_type )
1713 dmfe_phy_write(db->ioaddr, db->phy_addr, 0, 0x1200, db->chip_id);
1714 }
1715
1716
1717 /*
1718 * Process op-mode
1719 * AUTO mode : PHY controller in Auto-negotiation Mode
1720 * Force mode: PHY controller in force mode with HUB
1721 * N-way force capability with SWITCH
1722 */
1723
dmfe_process_mode(struct dmfe_board_info * db)1724 static void dmfe_process_mode(struct dmfe_board_info *db)
1725 {
1726 u16 phy_reg;
1727
1728 /* Full Duplex Mode Check */
1729 if (db->op_mode & 0x4)
1730 db->cr6_data |= CR6_FDM; /* Set Full Duplex Bit */
1731 else
1732 db->cr6_data &= ~CR6_FDM; /* Clear Full Duplex Bit */
1733
1734 /* Transciver Selection */
1735 if (db->op_mode & 0x10) /* 1M HomePNA */
1736 db->cr6_data |= 0x40000;/* External MII select */
1737 else
1738 db->cr6_data &= ~0x40000;/* Internal 10/100 transciver */
1739
1740 update_cr6(db->cr6_data, db->ioaddr);
1741
1742 /* 10/100M phyxcer force mode need */
1743 if ( !(db->media_mode & 0x18)) {
1744 /* Forece Mode */
1745 phy_reg = dmfe_phy_read(db->ioaddr, db->phy_addr, 6, db->chip_id);
1746 if ( !(phy_reg & 0x1) ) {
1747 /* parter without N-Way capability */
1748 phy_reg = 0x0;
1749 switch(db->op_mode) {
1750 case DMFE_10MHF: phy_reg = 0x0; break;
1751 case DMFE_10MFD: phy_reg = 0x100; break;
1752 case DMFE_100MHF: phy_reg = 0x2000; break;
1753 case DMFE_100MFD: phy_reg = 0x2100; break;
1754 }
1755 dmfe_phy_write(db->ioaddr,
1756 db->phy_addr, 0, phy_reg, db->chip_id);
1757 if ( db->chip_type && (db->chip_id == PCI_DM9102_ID) )
1758 mdelay(20);
1759 dmfe_phy_write(db->ioaddr,
1760 db->phy_addr, 0, phy_reg, db->chip_id);
1761 }
1762 }
1763 }
1764
1765
1766 /*
1767 * Write a word to Phy register
1768 */
1769
dmfe_phy_write(void __iomem * ioaddr,u8 phy_addr,u8 offset,u16 phy_data,u32 chip_id)1770 static void dmfe_phy_write(void __iomem *ioaddr, u8 phy_addr, u8 offset,
1771 u16 phy_data, u32 chip_id)
1772 {
1773 u16 i;
1774
1775 if (chip_id == PCI_DM9132_ID) {
1776 dw16(0x80 + offset * 4, phy_data);
1777 } else {
1778 /* DM9102/DM9102A Chip */
1779
1780 /* Send 33 synchronization clock to Phy controller */
1781 for (i = 0; i < 35; i++)
1782 dmfe_phy_write_1bit(ioaddr, PHY_DATA_1);
1783
1784 /* Send start command(01) to Phy */
1785 dmfe_phy_write_1bit(ioaddr, PHY_DATA_0);
1786 dmfe_phy_write_1bit(ioaddr, PHY_DATA_1);
1787
1788 /* Send write command(01) to Phy */
1789 dmfe_phy_write_1bit(ioaddr, PHY_DATA_0);
1790 dmfe_phy_write_1bit(ioaddr, PHY_DATA_1);
1791
1792 /* Send Phy address */
1793 for (i = 0x10; i > 0; i = i >> 1)
1794 dmfe_phy_write_1bit(ioaddr,
1795 phy_addr & i ? PHY_DATA_1 : PHY_DATA_0);
1796
1797 /* Send register address */
1798 for (i = 0x10; i > 0; i = i >> 1)
1799 dmfe_phy_write_1bit(ioaddr,
1800 offset & i ? PHY_DATA_1 : PHY_DATA_0);
1801
1802 /* written trasnition */
1803 dmfe_phy_write_1bit(ioaddr, PHY_DATA_1);
1804 dmfe_phy_write_1bit(ioaddr, PHY_DATA_0);
1805
1806 /* Write a word data to PHY controller */
1807 for ( i = 0x8000; i > 0; i >>= 1)
1808 dmfe_phy_write_1bit(ioaddr,
1809 phy_data & i ? PHY_DATA_1 : PHY_DATA_0);
1810 }
1811 }
1812
1813
1814 /*
1815 * Read a word data from phy register
1816 */
1817
dmfe_phy_read(void __iomem * ioaddr,u8 phy_addr,u8 offset,u32 chip_id)1818 static u16 dmfe_phy_read(void __iomem *ioaddr, u8 phy_addr, u8 offset, u32 chip_id)
1819 {
1820 int i;
1821 u16 phy_data;
1822
1823 if (chip_id == PCI_DM9132_ID) {
1824 /* DM9132 Chip */
1825 phy_data = dr16(0x80 + offset * 4);
1826 } else {
1827 /* DM9102/DM9102A Chip */
1828
1829 /* Send 33 synchronization clock to Phy controller */
1830 for (i = 0; i < 35; i++)
1831 dmfe_phy_write_1bit(ioaddr, PHY_DATA_1);
1832
1833 /* Send start command(01) to Phy */
1834 dmfe_phy_write_1bit(ioaddr, PHY_DATA_0);
1835 dmfe_phy_write_1bit(ioaddr, PHY_DATA_1);
1836
1837 /* Send read command(10) to Phy */
1838 dmfe_phy_write_1bit(ioaddr, PHY_DATA_1);
1839 dmfe_phy_write_1bit(ioaddr, PHY_DATA_0);
1840
1841 /* Send Phy address */
1842 for (i = 0x10; i > 0; i = i >> 1)
1843 dmfe_phy_write_1bit(ioaddr,
1844 phy_addr & i ? PHY_DATA_1 : PHY_DATA_0);
1845
1846 /* Send register address */
1847 for (i = 0x10; i > 0; i = i >> 1)
1848 dmfe_phy_write_1bit(ioaddr,
1849 offset & i ? PHY_DATA_1 : PHY_DATA_0);
1850
1851 /* Skip transition state */
1852 dmfe_phy_read_1bit(ioaddr);
1853
1854 /* read 16bit data */
1855 for (phy_data = 0, i = 0; i < 16; i++) {
1856 phy_data <<= 1;
1857 phy_data |= dmfe_phy_read_1bit(ioaddr);
1858 }
1859 }
1860
1861 return phy_data;
1862 }
1863
1864
1865 /*
1866 * Write one bit data to Phy Controller
1867 */
1868
dmfe_phy_write_1bit(void __iomem * ioaddr,u32 phy_data)1869 static void dmfe_phy_write_1bit(void __iomem *ioaddr, u32 phy_data)
1870 {
1871 dw32(DCR9, phy_data); /* MII Clock Low */
1872 udelay(1);
1873 dw32(DCR9, phy_data | MDCLKH); /* MII Clock High */
1874 udelay(1);
1875 dw32(DCR9, phy_data); /* MII Clock Low */
1876 udelay(1);
1877 }
1878
1879
1880 /*
1881 * Read one bit phy data from PHY controller
1882 */
1883
dmfe_phy_read_1bit(void __iomem * ioaddr)1884 static u16 dmfe_phy_read_1bit(void __iomem *ioaddr)
1885 {
1886 u16 phy_data;
1887
1888 dw32(DCR9, 0x50000);
1889 udelay(1);
1890 phy_data = (dr32(DCR9) >> 19) & 0x1;
1891 dw32(DCR9, 0x40000);
1892 udelay(1);
1893
1894 return phy_data;
1895 }
1896
1897
1898 /*
1899 * Parser SROM and media mode
1900 */
1901
dmfe_parse_srom(struct dmfe_board_info * db)1902 static void dmfe_parse_srom(struct dmfe_board_info * db)
1903 {
1904 char * srom = db->srom;
1905 int dmfe_mode, tmp_reg;
1906
1907 DMFE_DBUG(0, "dmfe_parse_srom() ", 0);
1908
1909 /* Init CR15 */
1910 db->cr15_data = CR15_DEFAULT;
1911
1912 /* Check SROM Version */
1913 if ( ( (int) srom[18] & 0xff) == SROM_V41_CODE) {
1914 /* SROM V4.01 */
1915 /* Get NIC support media mode */
1916 db->NIC_capability = le16_to_cpup((__le16 *) (srom + 34));
1917 db->PHY_reg4 = 0;
1918 for (tmp_reg = 1; tmp_reg < 0x10; tmp_reg <<= 1) {
1919 switch( db->NIC_capability & tmp_reg ) {
1920 case 0x1: db->PHY_reg4 |= 0x0020; break;
1921 case 0x2: db->PHY_reg4 |= 0x0040; break;
1922 case 0x4: db->PHY_reg4 |= 0x0080; break;
1923 case 0x8: db->PHY_reg4 |= 0x0100; break;
1924 }
1925 }
1926
1927 /* Media Mode Force or not check */
1928 dmfe_mode = (le32_to_cpup((__le32 *) (srom + 34)) &
1929 le32_to_cpup((__le32 *) (srom + 36)));
1930 switch(dmfe_mode) {
1931 case 0x4: dmfe_media_mode = DMFE_100MHF; break; /* 100MHF */
1932 case 0x2: dmfe_media_mode = DMFE_10MFD; break; /* 10MFD */
1933 case 0x8: dmfe_media_mode = DMFE_100MFD; break; /* 100MFD */
1934 case 0x100:
1935 case 0x200: dmfe_media_mode = DMFE_1M_HPNA; break;/* HomePNA */
1936 }
1937
1938 /* Special Function setting */
1939 /* VLAN function */
1940 if ( (SF_mode & 0x1) || (srom[43] & 0x80) )
1941 db->cr15_data |= 0x40;
1942
1943 /* Flow Control */
1944 if ( (SF_mode & 0x2) || (srom[40] & 0x1) )
1945 db->cr15_data |= 0x400;
1946
1947 /* TX pause packet */
1948 if ( (SF_mode & 0x4) || (srom[40] & 0xe) )
1949 db->cr15_data |= 0x9800;
1950 }
1951
1952 /* Parse HPNA parameter */
1953 db->HPNA_command = 1;
1954
1955 /* Accept remote command or not */
1956 if (HPNA_rx_cmd == 0)
1957 db->HPNA_command |= 0x8000;
1958
1959 /* Issue remote command & operation mode */
1960 if (HPNA_tx_cmd == 1)
1961 switch(HPNA_mode) { /* Issue Remote Command */
1962 case 0: db->HPNA_command |= 0x0904; break;
1963 case 1: db->HPNA_command |= 0x0a00; break;
1964 case 2: db->HPNA_command |= 0x0506; break;
1965 case 3: db->HPNA_command |= 0x0602; break;
1966 }
1967 else
1968 switch(HPNA_mode) { /* Don't Issue */
1969 case 0: db->HPNA_command |= 0x0004; break;
1970 case 1: db->HPNA_command |= 0x0000; break;
1971 case 2: db->HPNA_command |= 0x0006; break;
1972 case 3: db->HPNA_command |= 0x0002; break;
1973 }
1974
1975 /* Check DM9801 or DM9802 present or not */
1976 db->HPNA_present = 0;
1977 update_cr6(db->cr6_data | 0x40000, db->ioaddr);
1978 tmp_reg = dmfe_phy_read(db->ioaddr, db->phy_addr, 3, db->chip_id);
1979 if ( ( tmp_reg & 0xfff0 ) == 0xb900 ) {
1980 /* DM9801 or DM9802 present */
1981 db->HPNA_timer = 8;
1982 if ( dmfe_phy_read(db->ioaddr, db->phy_addr, 31, db->chip_id) == 0x4404) {
1983 /* DM9801 HomeRun */
1984 db->HPNA_present = 1;
1985 dmfe_program_DM9801(db, tmp_reg);
1986 } else {
1987 /* DM9802 LongRun */
1988 db->HPNA_present = 2;
1989 dmfe_program_DM9802(db);
1990 }
1991 }
1992
1993 }
1994
1995
1996 /*
1997 * Init HomeRun DM9801
1998 */
1999
dmfe_program_DM9801(struct dmfe_board_info * db,int HPNA_rev)2000 static void dmfe_program_DM9801(struct dmfe_board_info * db, int HPNA_rev)
2001 {
2002 uint reg17, reg25;
2003
2004 if ( !HPNA_NoiseFloor ) HPNA_NoiseFloor = DM9801_NOISE_FLOOR;
2005 switch(HPNA_rev) {
2006 case 0xb900: /* DM9801 E3 */
2007 db->HPNA_command |= 0x1000;
2008 reg25 = dmfe_phy_read(db->ioaddr, db->phy_addr, 24, db->chip_id);
2009 reg25 = ( (reg25 + HPNA_NoiseFloor) & 0xff) | 0xf000;
2010 reg17 = dmfe_phy_read(db->ioaddr, db->phy_addr, 17, db->chip_id);
2011 break;
2012 case 0xb901: /* DM9801 E4 */
2013 reg25 = dmfe_phy_read(db->ioaddr, db->phy_addr, 25, db->chip_id);
2014 reg25 = (reg25 & 0xff00) + HPNA_NoiseFloor;
2015 reg17 = dmfe_phy_read(db->ioaddr, db->phy_addr, 17, db->chip_id);
2016 reg17 = (reg17 & 0xfff0) + HPNA_NoiseFloor + 3;
2017 break;
2018 case 0xb902: /* DM9801 E5 */
2019 case 0xb903: /* DM9801 E6 */
2020 default:
2021 db->HPNA_command |= 0x1000;
2022 reg25 = dmfe_phy_read(db->ioaddr, db->phy_addr, 25, db->chip_id);
2023 reg25 = (reg25 & 0xff00) + HPNA_NoiseFloor - 5;
2024 reg17 = dmfe_phy_read(db->ioaddr, db->phy_addr, 17, db->chip_id);
2025 reg17 = (reg17 & 0xfff0) + HPNA_NoiseFloor;
2026 break;
2027 }
2028 dmfe_phy_write(db->ioaddr, db->phy_addr, 16, db->HPNA_command, db->chip_id);
2029 dmfe_phy_write(db->ioaddr, db->phy_addr, 17, reg17, db->chip_id);
2030 dmfe_phy_write(db->ioaddr, db->phy_addr, 25, reg25, db->chip_id);
2031 }
2032
2033
2034 /*
2035 * Init HomeRun DM9802
2036 */
2037
dmfe_program_DM9802(struct dmfe_board_info * db)2038 static void dmfe_program_DM9802(struct dmfe_board_info * db)
2039 {
2040 uint phy_reg;
2041
2042 if ( !HPNA_NoiseFloor ) HPNA_NoiseFloor = DM9802_NOISE_FLOOR;
2043 dmfe_phy_write(db->ioaddr, db->phy_addr, 16, db->HPNA_command, db->chip_id);
2044 phy_reg = dmfe_phy_read(db->ioaddr, db->phy_addr, 25, db->chip_id);
2045 phy_reg = ( phy_reg & 0xff00) + HPNA_NoiseFloor;
2046 dmfe_phy_write(db->ioaddr, db->phy_addr, 25, phy_reg, db->chip_id);
2047 }
2048
2049
2050 /*
2051 * Check remote HPNA power and speed status. If not correct,
2052 * issue command again.
2053 */
2054
dmfe_HPNA_remote_cmd_chk(struct dmfe_board_info * db)2055 static void dmfe_HPNA_remote_cmd_chk(struct dmfe_board_info * db)
2056 {
2057 uint phy_reg;
2058
2059 /* Got remote device status */
2060 phy_reg = dmfe_phy_read(db->ioaddr, db->phy_addr, 17, db->chip_id) & 0x60;
2061 switch(phy_reg) {
2062 case 0x00: phy_reg = 0x0a00;break; /* LP/LS */
2063 case 0x20: phy_reg = 0x0900;break; /* LP/HS */
2064 case 0x40: phy_reg = 0x0600;break; /* HP/LS */
2065 case 0x60: phy_reg = 0x0500;break; /* HP/HS */
2066 }
2067
2068 /* Check remote device status match our setting ot not */
2069 if ( phy_reg != (db->HPNA_command & 0x0f00) ) {
2070 dmfe_phy_write(db->ioaddr, db->phy_addr, 16, db->HPNA_command,
2071 db->chip_id);
2072 db->HPNA_timer=8;
2073 } else
2074 db->HPNA_timer=600; /* Match, every 10 minutes, check */
2075 }
2076
2077
2078
2079 static const struct pci_device_id dmfe_pci_tbl[] = {
2080 { 0x1282, 0x9132, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_DM9132_ID },
2081 { 0x1282, 0x9102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_DM9102_ID },
2082 { 0x1282, 0x9100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_DM9100_ID },
2083 { 0x1282, 0x9009, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_DM9009_ID },
2084 { 0, }
2085 };
2086 MODULE_DEVICE_TABLE(pci, dmfe_pci_tbl);
2087
dmfe_suspend(struct device * dev_d)2088 static int __maybe_unused dmfe_suspend(struct device *dev_d)
2089 {
2090 struct net_device *dev = dev_get_drvdata(dev_d);
2091 struct dmfe_board_info *db = netdev_priv(dev);
2092 void __iomem *ioaddr = db->ioaddr;
2093
2094 /* Disable upper layer interface */
2095 netif_device_detach(dev);
2096
2097 /* Disable Tx/Rx */
2098 db->cr6_data &= ~(CR6_RXSC | CR6_TXSC);
2099 update_cr6(db->cr6_data, ioaddr);
2100
2101 /* Disable Interrupt */
2102 dw32(DCR7, 0);
2103 dw32(DCR5, dr32(DCR5));
2104
2105 /* Fre RX buffers */
2106 dmfe_free_rxbuffer(db);
2107
2108 /* Enable WOL */
2109 device_wakeup_enable(dev_d);
2110
2111 return 0;
2112 }
2113
dmfe_resume(struct device * dev_d)2114 static int __maybe_unused dmfe_resume(struct device *dev_d)
2115 {
2116 struct net_device *dev = dev_get_drvdata(dev_d);
2117
2118 /* Re-initialize DM910X board */
2119 dmfe_init_dm910x(dev);
2120
2121 /* Disable WOL */
2122 device_wakeup_disable(dev_d);
2123
2124 /* Restart upper layer interface */
2125 netif_device_attach(dev);
2126
2127 return 0;
2128 }
2129
2130 static SIMPLE_DEV_PM_OPS(dmfe_pm_ops, dmfe_suspend, dmfe_resume);
2131
2132 static struct pci_driver dmfe_driver = {
2133 .name = "dmfe",
2134 .id_table = dmfe_pci_tbl,
2135 .probe = dmfe_init_one,
2136 .remove = dmfe_remove_one,
2137 .driver.pm = &dmfe_pm_ops,
2138 };
2139
2140 MODULE_AUTHOR("Sten Wang, sten_wang@davicom.com.tw");
2141 MODULE_DESCRIPTION("Davicom DM910X fast ethernet driver");
2142 MODULE_LICENSE("GPL");
2143
2144 module_param(debug, int, 0);
2145 module_param(mode, byte, 0);
2146 module_param(cr6set, int, 0);
2147 module_param(chkmode, byte, 0);
2148 module_param(HPNA_mode, byte, 0);
2149 module_param(HPNA_rx_cmd, byte, 0);
2150 module_param(HPNA_tx_cmd, byte, 0);
2151 module_param(HPNA_NoiseFloor, byte, 0);
2152 module_param(SF_mode, byte, 0);
2153 MODULE_PARM_DESC(debug, "Davicom DM9xxx enable debugging (0-1)");
2154 MODULE_PARM_DESC(mode, "Davicom DM9xxx: "
2155 "Bit 0: 10/100Mbps, bit 2: duplex, bit 8: HomePNA");
2156
2157 MODULE_PARM_DESC(SF_mode, "Davicom DM9xxx special function "
2158 "(bit 0: VLAN, bit 1 Flow Control, bit 2: TX pause packet)");
2159
2160 /* Description:
2161 * when user used insmod to add module, system invoked init_module()
2162 * to initialize and register.
2163 */
2164
dmfe_init_module(void)2165 static int __init dmfe_init_module(void)
2166 {
2167 int rc;
2168
2169 DMFE_DBUG(0, "init_module() ", debug);
2170
2171 if (debug)
2172 dmfe_debug = debug; /* set debug flag */
2173 if (cr6set)
2174 dmfe_cr6_user_set = cr6set;
2175
2176 switch (mode) {
2177 case DMFE_10MHF:
2178 case DMFE_100MHF:
2179 case DMFE_10MFD:
2180 case DMFE_100MFD:
2181 case DMFE_1M_HPNA:
2182 dmfe_media_mode = mode;
2183 break;
2184 default:
2185 dmfe_media_mode = DMFE_AUTO;
2186 break;
2187 }
2188
2189 if (HPNA_mode > 4)
2190 HPNA_mode = 0; /* Default: LP/HS */
2191 if (HPNA_rx_cmd > 1)
2192 HPNA_rx_cmd = 0; /* Default: Ignored remote cmd */
2193 if (HPNA_tx_cmd > 1)
2194 HPNA_tx_cmd = 0; /* Default: Don't issue remote cmd */
2195 if (HPNA_NoiseFloor > 15)
2196 HPNA_NoiseFloor = 0;
2197
2198 rc = pci_register_driver(&dmfe_driver);
2199 if (rc < 0)
2200 return rc;
2201
2202 return 0;
2203 }
2204
2205
2206 /*
2207 * Description:
2208 * when user used rmmod to delete module, system invoked clean_module()
2209 * to un-register all registered services.
2210 */
2211
dmfe_cleanup_module(void)2212 static void __exit dmfe_cleanup_module(void)
2213 {
2214 DMFE_DBUG(0, "dmfe_cleanup_module() ", debug);
2215 pci_unregister_driver(&dmfe_driver);
2216 }
2217
2218 module_init(dmfe_init_module);
2219 module_exit(dmfe_cleanup_module);
2220