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 eth_hw_addr_set(dev, &db->srom[20]);
480
481 err = register_netdev (dev);
482 if (err)
483 goto err_out_unmap;
484
485 dev_info(&dev->dev, "Davicom DM%04lx at pci%s, %pM, irq %d\n",
486 ent->driver_data >> 16,
487 pci_name(pdev), dev->dev_addr, pdev->irq);
488
489 pci_set_master(pdev);
490
491 return 0;
492
493 err_out_unmap:
494 pci_iounmap(pdev, db->ioaddr);
495 err_out_free_buf:
496 dma_free_coherent(&pdev->dev, TX_BUF_ALLOC * TX_DESC_CNT + 4,
497 db->buf_pool_ptr, db->buf_pool_dma_ptr);
498 err_out_free_desc:
499 dma_free_coherent(&pdev->dev,
500 sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20,
501 db->desc_pool_ptr, db->desc_pool_dma_ptr);
502 err_out_res:
503 pci_release_regions(pdev);
504 err_out_disable:
505 pci_disable_device(pdev);
506 err_out_free:
507 free_netdev(dev);
508
509 return err;
510 }
511
512
dmfe_remove_one(struct pci_dev * pdev)513 static void dmfe_remove_one(struct pci_dev *pdev)
514 {
515 struct net_device *dev = pci_get_drvdata(pdev);
516 struct dmfe_board_info *db = netdev_priv(dev);
517
518 DMFE_DBUG(0, "dmfe_remove_one()", 0);
519
520 if (dev) {
521
522 unregister_netdev(dev);
523 pci_iounmap(db->pdev, db->ioaddr);
524 dma_free_coherent(&db->pdev->dev,
525 sizeof(struct tx_desc) * DESC_ALL_CNT + 0x20,
526 db->desc_pool_ptr, db->desc_pool_dma_ptr);
527 dma_free_coherent(&db->pdev->dev,
528 TX_BUF_ALLOC * TX_DESC_CNT + 4,
529 db->buf_pool_ptr, db->buf_pool_dma_ptr);
530 pci_release_regions(pdev);
531 free_netdev(dev); /* free board information */
532 }
533
534 DMFE_DBUG(0, "dmfe_remove_one() exit", 0);
535 }
536
537
538 /*
539 * Open the interface.
540 * The interface is opened whenever "ifconfig" actives it.
541 */
542
dmfe_open(struct net_device * dev)543 static int dmfe_open(struct net_device *dev)
544 {
545 struct dmfe_board_info *db = netdev_priv(dev);
546 const int irq = db->pdev->irq;
547 int ret;
548
549 DMFE_DBUG(0, "dmfe_open", 0);
550
551 ret = request_irq(irq, dmfe_interrupt, IRQF_SHARED, dev->name, dev);
552 if (ret)
553 return ret;
554
555 /* system variable init */
556 db->cr6_data = CR6_DEFAULT | dmfe_cr6_user_set;
557 db->tx_packet_cnt = 0;
558 db->tx_queue_cnt = 0;
559 db->rx_avail_cnt = 0;
560 db->wait_reset = 0;
561
562 db->first_in_callback = 0;
563 db->NIC_capability = 0xf; /* All capability*/
564 db->PHY_reg4 = 0x1e0;
565
566 /* CR6 operation mode decision */
567 if ( !chkmode || (db->chip_id == PCI_DM9132_ID) ||
568 (db->chip_revision >= 0x30) ) {
569 db->cr6_data |= DMFE_TXTH_256;
570 db->cr0_data = CR0_DEFAULT;
571 db->dm910x_chk_mode=4; /* Enter the normal mode */
572 } else {
573 db->cr6_data |= CR6_SFT; /* Store & Forward mode */
574 db->cr0_data = 0;
575 db->dm910x_chk_mode = 1; /* Enter the check mode */
576 }
577
578 /* Initialize DM910X board */
579 dmfe_init_dm910x(dev);
580
581 /* Active System Interface */
582 netif_wake_queue(dev);
583
584 /* set and active a timer process */
585 timer_setup(&db->timer, dmfe_timer, 0);
586 db->timer.expires = DMFE_TIMER_WUT + HZ * 2;
587 add_timer(&db->timer);
588
589 return 0;
590 }
591
592
593 /* Initialize DM910X board
594 * Reset DM910X board
595 * Initialize TX/Rx descriptor chain structure
596 * Send the set-up frame
597 * Enable Tx/Rx machine
598 */
599
dmfe_init_dm910x(struct net_device * dev)600 static void dmfe_init_dm910x(struct net_device *dev)
601 {
602 struct dmfe_board_info *db = netdev_priv(dev);
603 void __iomem *ioaddr = db->ioaddr;
604
605 DMFE_DBUG(0, "dmfe_init_dm910x()", 0);
606
607 /* Reset DM910x MAC controller */
608 dw32(DCR0, DM910X_RESET); /* RESET MAC */
609 udelay(100);
610 dw32(DCR0, db->cr0_data);
611 udelay(5);
612
613 /* Phy addr : DM910(A)2/DM9132/9801, phy address = 1 */
614 db->phy_addr = 1;
615
616 /* Parser SROM and media mode */
617 dmfe_parse_srom(db);
618 db->media_mode = dmfe_media_mode;
619
620 /* RESET Phyxcer Chip by GPR port bit 7 */
621 dw32(DCR12, 0x180); /* Let bit 7 output port */
622 if (db->chip_id == PCI_DM9009_ID) {
623 dw32(DCR12, 0x80); /* Issue RESET signal */
624 mdelay(300); /* Delay 300 ms */
625 }
626 dw32(DCR12, 0x0); /* Clear RESET signal */
627
628 /* Process Phyxcer Media Mode */
629 if ( !(db->media_mode & 0x10) ) /* Force 1M mode */
630 dmfe_set_phyxcer(db);
631
632 /* Media Mode Process */
633 if ( !(db->media_mode & DMFE_AUTO) )
634 db->op_mode = db->media_mode; /* Force Mode */
635
636 /* Initialize Transmit/Receive descriptor and CR3/4 */
637 dmfe_descriptor_init(dev);
638
639 /* Init CR6 to program DM910x operation */
640 update_cr6(db->cr6_data, ioaddr);
641
642 /* Send setup frame */
643 if (db->chip_id == PCI_DM9132_ID)
644 dm9132_id_table(dev); /* DM9132 */
645 else
646 send_filter_frame(dev); /* DM9102/DM9102A */
647
648 /* Init CR7, interrupt active bit */
649 db->cr7_data = CR7_DEFAULT;
650 dw32(DCR7, db->cr7_data);
651
652 /* Init CR15, Tx jabber and Rx watchdog timer */
653 dw32(DCR15, db->cr15_data);
654
655 /* Enable DM910X Tx/Rx function */
656 db->cr6_data |= CR6_RXSC | CR6_TXSC | 0x40000;
657 update_cr6(db->cr6_data, ioaddr);
658 }
659
660
661 /*
662 * Hardware start transmission.
663 * Send a packet to media from the upper layer.
664 */
665
dmfe_start_xmit(struct sk_buff * skb,struct net_device * dev)666 static netdev_tx_t dmfe_start_xmit(struct sk_buff *skb,
667 struct net_device *dev)
668 {
669 struct dmfe_board_info *db = netdev_priv(dev);
670 void __iomem *ioaddr = db->ioaddr;
671 struct tx_desc *txptr;
672 unsigned long flags;
673
674 DMFE_DBUG(0, "dmfe_start_xmit", 0);
675
676 /* Too large packet check */
677 if (skb->len > MAX_PACKET_SIZE) {
678 pr_err("big packet = %d\n", (u16)skb->len);
679 dev_kfree_skb_any(skb);
680 return NETDEV_TX_OK;
681 }
682
683 /* Resource flag check */
684 netif_stop_queue(dev);
685
686 spin_lock_irqsave(&db->lock, flags);
687
688 /* No Tx resource check, it never happen nromally */
689 if (db->tx_queue_cnt >= TX_FREE_DESC_CNT) {
690 spin_unlock_irqrestore(&db->lock, flags);
691 pr_err("No Tx resource %ld\n", db->tx_queue_cnt);
692 return NETDEV_TX_BUSY;
693 }
694
695 /* Disable NIC interrupt */
696 dw32(DCR7, 0);
697
698 /* transmit this packet */
699 txptr = db->tx_insert_ptr;
700 skb_copy_from_linear_data(skb, txptr->tx_buf_ptr, skb->len);
701 txptr->tdes1 = cpu_to_le32(0xe1000000 | skb->len);
702
703 /* Point to next transmit free descriptor */
704 db->tx_insert_ptr = txptr->next_tx_desc;
705
706 /* Transmit Packet Process */
707 if ( (!db->tx_queue_cnt) && (db->tx_packet_cnt < TX_MAX_SEND_CNT) ) {
708 txptr->tdes0 = cpu_to_le32(0x80000000); /* Set owner bit */
709 db->tx_packet_cnt++; /* Ready to send */
710 dw32(DCR1, 0x1); /* Issue Tx polling */
711 netif_trans_update(dev); /* saved time stamp */
712 } else {
713 db->tx_queue_cnt++; /* queue TX packet */
714 dw32(DCR1, 0x1); /* Issue Tx polling */
715 }
716
717 /* Tx resource check */
718 if ( db->tx_queue_cnt < TX_FREE_DESC_CNT )
719 netif_wake_queue(dev);
720
721 /* Restore CR7 to enable interrupt */
722 spin_unlock_irqrestore(&db->lock, flags);
723 dw32(DCR7, db->cr7_data);
724
725 /* free this SKB */
726 dev_consume_skb_any(skb);
727
728 return NETDEV_TX_OK;
729 }
730
731
732 /*
733 * Stop the interface.
734 * The interface is stopped when it is brought.
735 */
736
dmfe_stop(struct net_device * dev)737 static int dmfe_stop(struct net_device *dev)
738 {
739 struct dmfe_board_info *db = netdev_priv(dev);
740 void __iomem *ioaddr = db->ioaddr;
741
742 DMFE_DBUG(0, "dmfe_stop", 0);
743
744 /* disable system */
745 netif_stop_queue(dev);
746
747 /* deleted timer */
748 del_timer_sync(&db->timer);
749
750 /* Reset & stop DM910X board */
751 dw32(DCR0, DM910X_RESET);
752 udelay(100);
753 dmfe_phy_write(ioaddr, db->phy_addr, 0, 0x8000, db->chip_id);
754
755 /* free interrupt */
756 free_irq(db->pdev->irq, dev);
757
758 /* free allocated rx buffer */
759 dmfe_free_rxbuffer(db);
760
761 #if 0
762 /* show statistic counter */
763 printk("FU:%lx EC:%lx LC:%lx NC:%lx LOC:%lx TXJT:%lx RESET:%lx RCR8:%lx FAL:%lx TT:%lx\n",
764 db->tx_fifo_underrun, db->tx_excessive_collision,
765 db->tx_late_collision, db->tx_no_carrier, db->tx_loss_carrier,
766 db->tx_jabber_timeout, db->reset_count, db->reset_cr8,
767 db->reset_fatal, db->reset_TXtimeout);
768 #endif
769
770 return 0;
771 }
772
773
774 /*
775 * DM9102 insterrupt handler
776 * receive the packet to upper layer, free the transmitted packet
777 */
778
dmfe_interrupt(int irq,void * dev_id)779 static irqreturn_t dmfe_interrupt(int irq, void *dev_id)
780 {
781 struct net_device *dev = dev_id;
782 struct dmfe_board_info *db = netdev_priv(dev);
783 void __iomem *ioaddr = db->ioaddr;
784 unsigned long flags;
785
786 DMFE_DBUG(0, "dmfe_interrupt()", 0);
787
788 spin_lock_irqsave(&db->lock, flags);
789
790 /* Got DM910X status */
791 db->cr5_data = dr32(DCR5);
792 dw32(DCR5, db->cr5_data);
793 if ( !(db->cr5_data & 0xc1) ) {
794 spin_unlock_irqrestore(&db->lock, flags);
795 return IRQ_HANDLED;
796 }
797
798 /* Disable all interrupt in CR7 to solve the interrupt edge problem */
799 dw32(DCR7, 0);
800
801 /* Check system status */
802 if (db->cr5_data & 0x2000) {
803 /* system bus error happen */
804 DMFE_DBUG(1, "System bus error happen. CR5=", db->cr5_data);
805 db->reset_fatal++;
806 db->wait_reset = 1; /* Need to RESET */
807 spin_unlock_irqrestore(&db->lock, flags);
808 return IRQ_HANDLED;
809 }
810
811 /* Received the coming packet */
812 if ( (db->cr5_data & 0x40) && db->rx_avail_cnt )
813 dmfe_rx_packet(dev, db);
814
815 /* reallocate rx descriptor buffer */
816 if (db->rx_avail_cnt<RX_DESC_CNT)
817 allocate_rx_buffer(dev);
818
819 /* Free the transmitted descriptor */
820 if ( db->cr5_data & 0x01)
821 dmfe_free_tx_pkt(dev, db);
822
823 /* Mode Check */
824 if (db->dm910x_chk_mode & 0x2) {
825 db->dm910x_chk_mode = 0x4;
826 db->cr6_data |= 0x100;
827 update_cr6(db->cr6_data, ioaddr);
828 }
829
830 /* Restore CR7 to enable interrupt mask */
831 dw32(DCR7, db->cr7_data);
832
833 spin_unlock_irqrestore(&db->lock, flags);
834 return IRQ_HANDLED;
835 }
836
837
838 #ifdef CONFIG_NET_POLL_CONTROLLER
839 /*
840 * Polling 'interrupt' - used by things like netconsole to send skbs
841 * without having to re-enable interrupts. It's not called while
842 * the interrupt routine is executing.
843 */
844
poll_dmfe(struct net_device * dev)845 static void poll_dmfe (struct net_device *dev)
846 {
847 struct dmfe_board_info *db = netdev_priv(dev);
848 const int irq = db->pdev->irq;
849
850 /* disable_irq here is not very nice, but with the lockless
851 interrupt handler we have no other choice. */
852 disable_irq(irq);
853 dmfe_interrupt (irq, dev);
854 enable_irq(irq);
855 }
856 #endif
857
858 /*
859 * Free TX resource after TX complete
860 */
861
dmfe_free_tx_pkt(struct net_device * dev,struct dmfe_board_info * db)862 static void dmfe_free_tx_pkt(struct net_device *dev, struct dmfe_board_info *db)
863 {
864 struct tx_desc *txptr;
865 void __iomem *ioaddr = db->ioaddr;
866 u32 tdes0;
867
868 txptr = db->tx_remove_ptr;
869 while(db->tx_packet_cnt) {
870 tdes0 = le32_to_cpu(txptr->tdes0);
871 if (tdes0 & 0x80000000)
872 break;
873
874 /* A packet sent completed */
875 db->tx_packet_cnt--;
876 dev->stats.tx_packets++;
877
878 /* Transmit statistic counter */
879 if ( tdes0 != 0x7fffffff ) {
880 dev->stats.collisions += (tdes0 >> 3) & 0xf;
881 dev->stats.tx_bytes += le32_to_cpu(txptr->tdes1) & 0x7ff;
882 if (tdes0 & TDES0_ERR_MASK) {
883 dev->stats.tx_errors++;
884
885 if (tdes0 & 0x0002) { /* UnderRun */
886 db->tx_fifo_underrun++;
887 if ( !(db->cr6_data & CR6_SFT) ) {
888 db->cr6_data = db->cr6_data | CR6_SFT;
889 update_cr6(db->cr6_data, ioaddr);
890 }
891 }
892 if (tdes0 & 0x0100)
893 db->tx_excessive_collision++;
894 if (tdes0 & 0x0200)
895 db->tx_late_collision++;
896 if (tdes0 & 0x0400)
897 db->tx_no_carrier++;
898 if (tdes0 & 0x0800)
899 db->tx_loss_carrier++;
900 if (tdes0 & 0x4000)
901 db->tx_jabber_timeout++;
902 }
903 }
904
905 txptr = txptr->next_tx_desc;
906 }/* End of while */
907
908 /* Update TX remove pointer to next */
909 db->tx_remove_ptr = txptr;
910
911 /* Send the Tx packet in queue */
912 if ( (db->tx_packet_cnt < TX_MAX_SEND_CNT) && db->tx_queue_cnt ) {
913 txptr->tdes0 = cpu_to_le32(0x80000000); /* Set owner bit */
914 db->tx_packet_cnt++; /* Ready to send */
915 db->tx_queue_cnt--;
916 dw32(DCR1, 0x1); /* Issue Tx polling */
917 netif_trans_update(dev); /* saved time stamp */
918 }
919
920 /* Resource available check */
921 if ( db->tx_queue_cnt < TX_WAKE_DESC_CNT )
922 netif_wake_queue(dev); /* Active upper layer, send again */
923 }
924
925
926 /*
927 * Calculate the CRC valude of the Rx packet
928 * flag = 1 : return the reverse CRC (for the received packet CRC)
929 * 0 : return the normal CRC (for Hash Table index)
930 */
931
cal_CRC(unsigned char * Data,unsigned int Len,u8 flag)932 static inline u32 cal_CRC(unsigned char * Data, unsigned int Len, u8 flag)
933 {
934 u32 crc = crc32(~0, Data, Len);
935 if (flag) crc = ~crc;
936 return crc;
937 }
938
939
940 /*
941 * Receive the come packet and pass to upper layer
942 */
943
dmfe_rx_packet(struct net_device * dev,struct dmfe_board_info * db)944 static void dmfe_rx_packet(struct net_device *dev, struct dmfe_board_info *db)
945 {
946 struct rx_desc *rxptr;
947 struct sk_buff *skb, *newskb;
948 int rxlen;
949 u32 rdes0;
950
951 rxptr = db->rx_ready_ptr;
952
953 while(db->rx_avail_cnt) {
954 rdes0 = le32_to_cpu(rxptr->rdes0);
955 if (rdes0 & 0x80000000) /* packet owner check */
956 break;
957
958 db->rx_avail_cnt--;
959 db->interval_rx_cnt++;
960
961 dma_unmap_single(&db->pdev->dev, le32_to_cpu(rxptr->rdes2),
962 RX_ALLOC_SIZE, DMA_FROM_DEVICE);
963
964 if ( (rdes0 & 0x300) != 0x300) {
965 /* A packet without First/Last flag */
966 /* reuse this SKB */
967 DMFE_DBUG(0, "Reuse SK buffer, rdes0", rdes0);
968 dmfe_reuse_skb(db, rxptr->rx_skb_ptr);
969 } else {
970 /* A packet with First/Last flag */
971 rxlen = ( (rdes0 >> 16) & 0x3fff) - 4;
972
973 /* error summary bit check */
974 if (rdes0 & 0x8000) {
975 /* This is a error packet */
976 dev->stats.rx_errors++;
977 if (rdes0 & 1)
978 dev->stats.rx_fifo_errors++;
979 if (rdes0 & 2)
980 dev->stats.rx_crc_errors++;
981 if (rdes0 & 0x80)
982 dev->stats.rx_length_errors++;
983 }
984
985 if ( !(rdes0 & 0x8000) ||
986 ((db->cr6_data & CR6_PM) && (rxlen>6)) ) {
987 skb = rxptr->rx_skb_ptr;
988
989 /* Received Packet CRC check need or not */
990 if ( (db->dm910x_chk_mode & 1) &&
991 (cal_CRC(skb->data, rxlen, 1) !=
992 (*(u32 *) (skb->data+rxlen) ))) { /* FIXME (?) */
993 /* Found a error received packet */
994 dmfe_reuse_skb(db, rxptr->rx_skb_ptr);
995 db->dm910x_chk_mode = 3;
996 } else {
997 /* Good packet, send to upper layer */
998 /* Shorst packet used new SKB */
999 if ((rxlen < RX_COPY_SIZE) &&
1000 ((newskb = netdev_alloc_skb(dev, rxlen + 2))
1001 != NULL)) {
1002
1003 skb = newskb;
1004 /* size less than COPY_SIZE, allocate a rxlen SKB */
1005 skb_reserve(skb, 2); /* 16byte align */
1006 skb_copy_from_linear_data(rxptr->rx_skb_ptr,
1007 skb_put(skb, rxlen),
1008 rxlen);
1009 dmfe_reuse_skb(db, rxptr->rx_skb_ptr);
1010 } else
1011 skb_put(skb, rxlen);
1012
1013 skb->protocol = eth_type_trans(skb, dev);
1014 netif_rx(skb);
1015 dev->stats.rx_packets++;
1016 dev->stats.rx_bytes += rxlen;
1017 }
1018 } else {
1019 /* Reuse SKB buffer when the packet is error */
1020 DMFE_DBUG(0, "Reuse SK buffer, rdes0", rdes0);
1021 dmfe_reuse_skb(db, rxptr->rx_skb_ptr);
1022 }
1023 }
1024
1025 rxptr = rxptr->next_rx_desc;
1026 }
1027
1028 db->rx_ready_ptr = rxptr;
1029 }
1030
1031 /*
1032 * Set DM910X multicast address
1033 */
1034
dmfe_set_filter_mode(struct net_device * dev)1035 static void dmfe_set_filter_mode(struct net_device *dev)
1036 {
1037 struct dmfe_board_info *db = netdev_priv(dev);
1038 unsigned long flags;
1039 int mc_count = netdev_mc_count(dev);
1040
1041 DMFE_DBUG(0, "dmfe_set_filter_mode()", 0);
1042 spin_lock_irqsave(&db->lock, flags);
1043
1044 if (dev->flags & IFF_PROMISC) {
1045 DMFE_DBUG(0, "Enable PROM Mode", 0);
1046 db->cr6_data |= CR6_PM | CR6_PBF;
1047 update_cr6(db->cr6_data, db->ioaddr);
1048 spin_unlock_irqrestore(&db->lock, flags);
1049 return;
1050 }
1051
1052 if (dev->flags & IFF_ALLMULTI || mc_count > DMFE_MAX_MULTICAST) {
1053 DMFE_DBUG(0, "Pass all multicast address", mc_count);
1054 db->cr6_data &= ~(CR6_PM | CR6_PBF);
1055 db->cr6_data |= CR6_PAM;
1056 spin_unlock_irqrestore(&db->lock, flags);
1057 return;
1058 }
1059
1060 DMFE_DBUG(0, "Set multicast address", mc_count);
1061 if (db->chip_id == PCI_DM9132_ID)
1062 dm9132_id_table(dev); /* DM9132 */
1063 else
1064 send_filter_frame(dev); /* DM9102/DM9102A */
1065 spin_unlock_irqrestore(&db->lock, flags);
1066 }
1067
1068 /*
1069 * Ethtool interace
1070 */
1071
dmfe_ethtool_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)1072 static void dmfe_ethtool_get_drvinfo(struct net_device *dev,
1073 struct ethtool_drvinfo *info)
1074 {
1075 struct dmfe_board_info *np = netdev_priv(dev);
1076
1077 strscpy(info->driver, DRV_NAME, sizeof(info->driver));
1078 strscpy(info->bus_info, pci_name(np->pdev), sizeof(info->bus_info));
1079 }
1080
dmfe_ethtool_set_wol(struct net_device * dev,struct ethtool_wolinfo * wolinfo)1081 static int dmfe_ethtool_set_wol(struct net_device *dev,
1082 struct ethtool_wolinfo *wolinfo)
1083 {
1084 struct dmfe_board_info *db = netdev_priv(dev);
1085
1086 if (wolinfo->wolopts & (WAKE_UCAST | WAKE_MCAST | WAKE_BCAST |
1087 WAKE_ARP | WAKE_MAGICSECURE))
1088 return -EOPNOTSUPP;
1089
1090 db->wol_mode = wolinfo->wolopts;
1091 return 0;
1092 }
1093
dmfe_ethtool_get_wol(struct net_device * dev,struct ethtool_wolinfo * wolinfo)1094 static void dmfe_ethtool_get_wol(struct net_device *dev,
1095 struct ethtool_wolinfo *wolinfo)
1096 {
1097 struct dmfe_board_info *db = netdev_priv(dev);
1098
1099 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
1100 wolinfo->wolopts = db->wol_mode;
1101 }
1102
1103
1104 static const struct ethtool_ops netdev_ethtool_ops = {
1105 .get_drvinfo = dmfe_ethtool_get_drvinfo,
1106 .get_link = ethtool_op_get_link,
1107 .set_wol = dmfe_ethtool_set_wol,
1108 .get_wol = dmfe_ethtool_get_wol,
1109 };
1110
1111 /*
1112 * A periodic timer routine
1113 * Dynamic media sense, allocate Rx buffer...
1114 */
1115
dmfe_timer(struct timer_list * t)1116 static void dmfe_timer(struct timer_list *t)
1117 {
1118 struct dmfe_board_info *db = from_timer(db, t, timer);
1119 struct net_device *dev = pci_get_drvdata(db->pdev);
1120 void __iomem *ioaddr = db->ioaddr;
1121 u32 tmp_cr8;
1122 unsigned char tmp_cr12;
1123 unsigned long flags;
1124
1125 int link_ok, link_ok_phy;
1126
1127 DMFE_DBUG(0, "dmfe_timer()", 0);
1128 spin_lock_irqsave(&db->lock, flags);
1129
1130 /* Media mode process when Link OK before enter this route */
1131 if (db->first_in_callback == 0) {
1132 db->first_in_callback = 1;
1133 if (db->chip_type && (db->chip_id==PCI_DM9102_ID)) {
1134 db->cr6_data &= ~0x40000;
1135 update_cr6(db->cr6_data, ioaddr);
1136 dmfe_phy_write(ioaddr, db->phy_addr, 0, 0x1000, db->chip_id);
1137 db->cr6_data |= 0x40000;
1138 update_cr6(db->cr6_data, ioaddr);
1139 db->timer.expires = DMFE_TIMER_WUT + HZ * 2;
1140 add_timer(&db->timer);
1141 spin_unlock_irqrestore(&db->lock, flags);
1142 return;
1143 }
1144 }
1145
1146
1147 /* Operating Mode Check */
1148 if ( (db->dm910x_chk_mode & 0x1) &&
1149 (dev->stats.rx_packets > MAX_CHECK_PACKET) )
1150 db->dm910x_chk_mode = 0x4;
1151
1152 /* Dynamic reset DM910X : system error or transmit time-out */
1153 tmp_cr8 = dr32(DCR8);
1154 if ( (db->interval_rx_cnt==0) && (tmp_cr8) ) {
1155 db->reset_cr8++;
1156 db->wait_reset = 1;
1157 }
1158 db->interval_rx_cnt = 0;
1159
1160 /* TX polling kick monitor */
1161 if ( db->tx_packet_cnt &&
1162 time_after(jiffies, dev_trans_start(dev) + DMFE_TX_KICK) ) {
1163 dw32(DCR1, 0x1); /* Tx polling again */
1164
1165 /* TX Timeout */
1166 if (time_after(jiffies, dev_trans_start(dev) + DMFE_TX_TIMEOUT) ) {
1167 db->reset_TXtimeout++;
1168 db->wait_reset = 1;
1169 dev_warn(&dev->dev, "Tx timeout - resetting\n");
1170 }
1171 }
1172
1173 if (db->wait_reset) {
1174 DMFE_DBUG(0, "Dynamic Reset device", db->tx_packet_cnt);
1175 db->reset_count++;
1176 dmfe_dynamic_reset(dev);
1177 db->first_in_callback = 0;
1178 db->timer.expires = DMFE_TIMER_WUT;
1179 add_timer(&db->timer);
1180 spin_unlock_irqrestore(&db->lock, flags);
1181 return;
1182 }
1183
1184 /* Link status check, Dynamic media type change */
1185 if (db->chip_id == PCI_DM9132_ID)
1186 tmp_cr12 = dr8(DCR9 + 3); /* DM9132 */
1187 else
1188 tmp_cr12 = dr8(DCR12); /* DM9102/DM9102A */
1189
1190 if ( ((db->chip_id == PCI_DM9102_ID) &&
1191 (db->chip_revision == 0x30)) ||
1192 ((db->chip_id == PCI_DM9132_ID) &&
1193 (db->chip_revision == 0x10)) ) {
1194 /* DM9102A Chip */
1195 if (tmp_cr12 & 2)
1196 link_ok = 0;
1197 else
1198 link_ok = 1;
1199 }
1200 else
1201 /*0x43 is used instead of 0x3 because bit 6 should represent
1202 link status of external PHY */
1203 link_ok = (tmp_cr12 & 0x43) ? 1 : 0;
1204
1205
1206 /* If chip reports that link is failed it could be because external
1207 PHY link status pin is not connected correctly to chip
1208 To be sure ask PHY too.
1209 */
1210
1211 /* need a dummy read because of PHY's register latch*/
1212 dmfe_phy_read (db->ioaddr, db->phy_addr, 1, db->chip_id);
1213 link_ok_phy = (dmfe_phy_read (db->ioaddr,
1214 db->phy_addr, 1, db->chip_id) & 0x4) ? 1 : 0;
1215
1216 if (link_ok_phy != link_ok) {
1217 DMFE_DBUG (0, "PHY and chip report different link status", 0);
1218 link_ok = link_ok | link_ok_phy;
1219 }
1220
1221 if ( !link_ok && netif_carrier_ok(dev)) {
1222 /* Link Failed */
1223 DMFE_DBUG(0, "Link Failed", tmp_cr12);
1224 netif_carrier_off(dev);
1225
1226 /* For Force 10/100M Half/Full mode: Enable Auto-Nego mode */
1227 /* AUTO or force 1M Homerun/Longrun don't need */
1228 if ( !(db->media_mode & 0x38) )
1229 dmfe_phy_write(db->ioaddr, db->phy_addr,
1230 0, 0x1000, db->chip_id);
1231
1232 /* AUTO mode, if INT phyxcer link failed, select EXT device */
1233 if (db->media_mode & DMFE_AUTO) {
1234 /* 10/100M link failed, used 1M Home-Net */
1235 db->cr6_data|=0x00040000; /* bit18=1, MII */
1236 db->cr6_data&=~0x00000200; /* bit9=0, HD mode */
1237 update_cr6(db->cr6_data, ioaddr);
1238 }
1239 } else if (!netif_carrier_ok(dev)) {
1240
1241 DMFE_DBUG(0, "Link link OK", tmp_cr12);
1242
1243 /* Auto Sense Speed */
1244 if ( !(db->media_mode & DMFE_AUTO) || !dmfe_sense_speed(db)) {
1245 netif_carrier_on(dev);
1246 SHOW_MEDIA_TYPE(db->op_mode);
1247 }
1248
1249 dmfe_process_mode(db);
1250 }
1251
1252 /* HPNA remote command check */
1253 if (db->HPNA_command & 0xf00) {
1254 db->HPNA_timer--;
1255 if (!db->HPNA_timer)
1256 dmfe_HPNA_remote_cmd_chk(db);
1257 }
1258
1259 /* Timer active again */
1260 db->timer.expires = DMFE_TIMER_WUT;
1261 add_timer(&db->timer);
1262 spin_unlock_irqrestore(&db->lock, flags);
1263 }
1264
1265
1266 /*
1267 * Dynamic reset the DM910X board
1268 * Stop DM910X board
1269 * Free Tx/Rx allocated memory
1270 * Reset DM910X board
1271 * Re-initialize DM910X board
1272 */
1273
dmfe_dynamic_reset(struct net_device * dev)1274 static void dmfe_dynamic_reset(struct net_device *dev)
1275 {
1276 struct dmfe_board_info *db = netdev_priv(dev);
1277 void __iomem *ioaddr = db->ioaddr;
1278
1279 DMFE_DBUG(0, "dmfe_dynamic_reset()", 0);
1280
1281 /* Sopt MAC controller */
1282 db->cr6_data &= ~(CR6_RXSC | CR6_TXSC); /* Disable Tx/Rx */
1283 update_cr6(db->cr6_data, ioaddr);
1284 dw32(DCR7, 0); /* Disable Interrupt */
1285 dw32(DCR5, dr32(DCR5));
1286
1287 /* Disable upper layer interface */
1288 netif_stop_queue(dev);
1289
1290 /* Free Rx Allocate buffer */
1291 dmfe_free_rxbuffer(db);
1292
1293 /* system variable init */
1294 db->tx_packet_cnt = 0;
1295 db->tx_queue_cnt = 0;
1296 db->rx_avail_cnt = 0;
1297 netif_carrier_off(dev);
1298 db->wait_reset = 0;
1299
1300 /* Re-initialize DM910X board */
1301 dmfe_init_dm910x(dev);
1302
1303 /* Restart upper layer interface */
1304 netif_wake_queue(dev);
1305 }
1306
1307
1308 /*
1309 * free all allocated rx buffer
1310 */
1311
dmfe_free_rxbuffer(struct dmfe_board_info * db)1312 static void dmfe_free_rxbuffer(struct dmfe_board_info * db)
1313 {
1314 DMFE_DBUG(0, "dmfe_free_rxbuffer()", 0);
1315
1316 /* free allocated rx buffer */
1317 while (db->rx_avail_cnt) {
1318 dev_kfree_skb(db->rx_ready_ptr->rx_skb_ptr);
1319 db->rx_ready_ptr = db->rx_ready_ptr->next_rx_desc;
1320 db->rx_avail_cnt--;
1321 }
1322 }
1323
1324
1325 /*
1326 * Reuse the SK buffer
1327 */
1328
dmfe_reuse_skb(struct dmfe_board_info * db,struct sk_buff * skb)1329 static void dmfe_reuse_skb(struct dmfe_board_info *db, struct sk_buff * skb)
1330 {
1331 struct rx_desc *rxptr = db->rx_insert_ptr;
1332
1333 if (!(rxptr->rdes0 & cpu_to_le32(0x80000000))) {
1334 rxptr->rx_skb_ptr = skb;
1335 rxptr->rdes2 = cpu_to_le32(dma_map_single(&db->pdev->dev, skb->data,
1336 RX_ALLOC_SIZE, DMA_FROM_DEVICE));
1337 wmb();
1338 rxptr->rdes0 = cpu_to_le32(0x80000000);
1339 db->rx_avail_cnt++;
1340 db->rx_insert_ptr = rxptr->next_rx_desc;
1341 } else
1342 DMFE_DBUG(0, "SK Buffer reuse method error", db->rx_avail_cnt);
1343 }
1344
1345
1346 /*
1347 * Initialize transmit/Receive descriptor
1348 * Using Chain structure, and allocate Tx/Rx buffer
1349 */
1350
dmfe_descriptor_init(struct net_device * dev)1351 static void dmfe_descriptor_init(struct net_device *dev)
1352 {
1353 struct dmfe_board_info *db = netdev_priv(dev);
1354 void __iomem *ioaddr = db->ioaddr;
1355 struct tx_desc *tmp_tx;
1356 struct rx_desc *tmp_rx;
1357 unsigned char *tmp_buf;
1358 dma_addr_t tmp_tx_dma, tmp_rx_dma;
1359 dma_addr_t tmp_buf_dma;
1360 int i;
1361
1362 DMFE_DBUG(0, "dmfe_descriptor_init()", 0);
1363
1364 /* tx descriptor start pointer */
1365 db->tx_insert_ptr = db->first_tx_desc;
1366 db->tx_remove_ptr = db->first_tx_desc;
1367 dw32(DCR4, db->first_tx_desc_dma); /* TX DESC address */
1368
1369 /* rx descriptor start pointer */
1370 db->first_rx_desc = (void *)db->first_tx_desc +
1371 sizeof(struct tx_desc) * TX_DESC_CNT;
1372
1373 db->first_rx_desc_dma = db->first_tx_desc_dma +
1374 sizeof(struct tx_desc) * TX_DESC_CNT;
1375 db->rx_insert_ptr = db->first_rx_desc;
1376 db->rx_ready_ptr = db->first_rx_desc;
1377 dw32(DCR3, db->first_rx_desc_dma); /* RX DESC address */
1378
1379 /* Init Transmit chain */
1380 tmp_buf = db->buf_pool_start;
1381 tmp_buf_dma = db->buf_pool_dma_start;
1382 tmp_tx_dma = db->first_tx_desc_dma;
1383 for (tmp_tx = db->first_tx_desc, i = 0; i < TX_DESC_CNT; i++, tmp_tx++) {
1384 tmp_tx->tx_buf_ptr = tmp_buf;
1385 tmp_tx->tdes0 = cpu_to_le32(0);
1386 tmp_tx->tdes1 = cpu_to_le32(0x81000000); /* IC, chain */
1387 tmp_tx->tdes2 = cpu_to_le32(tmp_buf_dma);
1388 tmp_tx_dma += sizeof(struct tx_desc);
1389 tmp_tx->tdes3 = cpu_to_le32(tmp_tx_dma);
1390 tmp_tx->next_tx_desc = tmp_tx + 1;
1391 tmp_buf = tmp_buf + TX_BUF_ALLOC;
1392 tmp_buf_dma = tmp_buf_dma + TX_BUF_ALLOC;
1393 }
1394 (--tmp_tx)->tdes3 = cpu_to_le32(db->first_tx_desc_dma);
1395 tmp_tx->next_tx_desc = db->first_tx_desc;
1396
1397 /* Init Receive descriptor chain */
1398 tmp_rx_dma=db->first_rx_desc_dma;
1399 for (tmp_rx = db->first_rx_desc, i = 0; i < RX_DESC_CNT; i++, tmp_rx++) {
1400 tmp_rx->rdes0 = cpu_to_le32(0);
1401 tmp_rx->rdes1 = cpu_to_le32(0x01000600);
1402 tmp_rx_dma += sizeof(struct rx_desc);
1403 tmp_rx->rdes3 = cpu_to_le32(tmp_rx_dma);
1404 tmp_rx->next_rx_desc = tmp_rx + 1;
1405 }
1406 (--tmp_rx)->rdes3 = cpu_to_le32(db->first_rx_desc_dma);
1407 tmp_rx->next_rx_desc = db->first_rx_desc;
1408
1409 /* pre-allocate Rx buffer */
1410 allocate_rx_buffer(dev);
1411 }
1412
1413
1414 /*
1415 * Update CR6 value
1416 * Firstly stop DM910X , then written value and start
1417 */
1418
update_cr6(u32 cr6_data,void __iomem * ioaddr)1419 static void update_cr6(u32 cr6_data, void __iomem *ioaddr)
1420 {
1421 u32 cr6_tmp;
1422
1423 cr6_tmp = cr6_data & ~0x2002; /* stop Tx/Rx */
1424 dw32(DCR6, cr6_tmp);
1425 udelay(5);
1426 dw32(DCR6, cr6_data);
1427 udelay(5);
1428 }
1429
1430
1431 /*
1432 * Send a setup frame for DM9132
1433 * This setup frame initialize DM910X address filter mode
1434 */
1435
dm9132_id_table(struct net_device * dev)1436 static void dm9132_id_table(struct net_device *dev)
1437 {
1438 const u16 *addrptr = (const u16 *)dev->dev_addr;
1439 struct dmfe_board_info *db = netdev_priv(dev);
1440 void __iomem *ioaddr = db->ioaddr + 0xc0;
1441 struct netdev_hw_addr *ha;
1442 u16 i, hash_table[4];
1443
1444 /* Node address */
1445 for (i = 0; i < 3; i++) {
1446 dw16(0, addrptr[i]);
1447 ioaddr += 4;
1448 }
1449
1450 /* Clear Hash Table */
1451 memset(hash_table, 0, sizeof(hash_table));
1452
1453 /* broadcast address */
1454 hash_table[3] = 0x8000;
1455
1456 /* the multicast address in Hash Table : 64 bits */
1457 netdev_for_each_mc_addr(ha, dev) {
1458 u32 hash_val = cal_CRC((char *)ha->addr, 6, 0) & 0x3f;
1459
1460 hash_table[hash_val / 16] |= (u16) 1 << (hash_val % 16);
1461 }
1462
1463 /* Write the hash table to MAC MD table */
1464 for (i = 0; i < 4; i++, ioaddr += 4)
1465 dw16(0, hash_table[i]);
1466 }
1467
1468
1469 /*
1470 * Send a setup frame for DM9102/DM9102A
1471 * This setup frame initialize DM910X address filter mode
1472 */
1473
send_filter_frame(struct net_device * dev)1474 static void send_filter_frame(struct net_device *dev)
1475 {
1476 struct dmfe_board_info *db = netdev_priv(dev);
1477 struct netdev_hw_addr *ha;
1478 struct tx_desc *txptr;
1479 const u16 * addrptr;
1480 u32 * suptr;
1481 int i;
1482
1483 DMFE_DBUG(0, "send_filter_frame()", 0);
1484
1485 txptr = db->tx_insert_ptr;
1486 suptr = (u32 *) txptr->tx_buf_ptr;
1487
1488 /* Node address */
1489 addrptr = (const u16 *) dev->dev_addr;
1490 *suptr++ = addrptr[0];
1491 *suptr++ = addrptr[1];
1492 *suptr++ = addrptr[2];
1493
1494 /* broadcast address */
1495 *suptr++ = 0xffff;
1496 *suptr++ = 0xffff;
1497 *suptr++ = 0xffff;
1498
1499 /* fit the multicast address */
1500 netdev_for_each_mc_addr(ha, dev) {
1501 addrptr = (u16 *) ha->addr;
1502 *suptr++ = addrptr[0];
1503 *suptr++ = addrptr[1];
1504 *suptr++ = addrptr[2];
1505 }
1506
1507 for (i = netdev_mc_count(dev); i < 14; i++) {
1508 *suptr++ = 0xffff;
1509 *suptr++ = 0xffff;
1510 *suptr++ = 0xffff;
1511 }
1512
1513 /* prepare the setup frame */
1514 db->tx_insert_ptr = txptr->next_tx_desc;
1515 txptr->tdes1 = cpu_to_le32(0x890000c0);
1516
1517 /* Resource Check and Send the setup packet */
1518 if (!db->tx_packet_cnt) {
1519 void __iomem *ioaddr = db->ioaddr;
1520
1521 /* Resource Empty */
1522 db->tx_packet_cnt++;
1523 txptr->tdes0 = cpu_to_le32(0x80000000);
1524 update_cr6(db->cr6_data | 0x2000, ioaddr);
1525 dw32(DCR1, 0x1); /* Issue Tx polling */
1526 update_cr6(db->cr6_data, ioaddr);
1527 netif_trans_update(dev);
1528 } else
1529 db->tx_queue_cnt++; /* Put in TX queue */
1530 }
1531
1532
1533 /*
1534 * Allocate rx buffer,
1535 * As possible as allocate maxiumn Rx buffer
1536 */
1537
allocate_rx_buffer(struct net_device * dev)1538 static void allocate_rx_buffer(struct net_device *dev)
1539 {
1540 struct dmfe_board_info *db = netdev_priv(dev);
1541 struct rx_desc *rxptr;
1542 struct sk_buff *skb;
1543
1544 rxptr = db->rx_insert_ptr;
1545
1546 while(db->rx_avail_cnt < RX_DESC_CNT) {
1547 if ( ( skb = netdev_alloc_skb(dev, RX_ALLOC_SIZE) ) == NULL )
1548 break;
1549 rxptr->rx_skb_ptr = skb; /* FIXME (?) */
1550 rxptr->rdes2 = cpu_to_le32(dma_map_single(&db->pdev->dev, skb->data,
1551 RX_ALLOC_SIZE, DMA_FROM_DEVICE));
1552 wmb();
1553 rxptr->rdes0 = cpu_to_le32(0x80000000);
1554 rxptr = rxptr->next_rx_desc;
1555 db->rx_avail_cnt++;
1556 }
1557
1558 db->rx_insert_ptr = rxptr;
1559 }
1560
srom_clk_write(void __iomem * ioaddr,u32 data)1561 static void srom_clk_write(void __iomem *ioaddr, u32 data)
1562 {
1563 static const u32 cmd[] = {
1564 CR9_SROM_READ | CR9_SRCS,
1565 CR9_SROM_READ | CR9_SRCS | CR9_SRCLK,
1566 CR9_SROM_READ | CR9_SRCS
1567 };
1568 int i;
1569
1570 for (i = 0; i < ARRAY_SIZE(cmd); i++) {
1571 dw32(DCR9, data | cmd[i]);
1572 udelay(5);
1573 }
1574 }
1575
1576 /*
1577 * Read one word data from the serial ROM
1578 */
read_srom_word(void __iomem * ioaddr,int offset)1579 static u16 read_srom_word(void __iomem *ioaddr, int offset)
1580 {
1581 u16 srom_data;
1582 int i;
1583
1584 dw32(DCR9, CR9_SROM_READ);
1585 udelay(5);
1586 dw32(DCR9, CR9_SROM_READ | CR9_SRCS);
1587 udelay(5);
1588
1589 /* Send the Read Command 110b */
1590 srom_clk_write(ioaddr, SROM_DATA_1);
1591 srom_clk_write(ioaddr, SROM_DATA_1);
1592 srom_clk_write(ioaddr, SROM_DATA_0);
1593
1594 /* Send the offset */
1595 for (i = 5; i >= 0; i--) {
1596 srom_data = (offset & (1 << i)) ? SROM_DATA_1 : SROM_DATA_0;
1597 srom_clk_write(ioaddr, srom_data);
1598 }
1599
1600 dw32(DCR9, CR9_SROM_READ | CR9_SRCS);
1601 udelay(5);
1602
1603 for (i = 16; i > 0; i--) {
1604 dw32(DCR9, CR9_SROM_READ | CR9_SRCS | CR9_SRCLK);
1605 udelay(5);
1606 srom_data = (srom_data << 1) |
1607 ((dr32(DCR9) & CR9_CRDOUT) ? 1 : 0);
1608 dw32(DCR9, CR9_SROM_READ | CR9_SRCS);
1609 udelay(5);
1610 }
1611
1612 dw32(DCR9, CR9_SROM_READ);
1613 udelay(5);
1614 return srom_data;
1615 }
1616
1617
1618 /*
1619 * Auto sense the media mode
1620 */
1621
dmfe_sense_speed(struct dmfe_board_info * db)1622 static u8 dmfe_sense_speed(struct dmfe_board_info *db)
1623 {
1624 void __iomem *ioaddr = db->ioaddr;
1625 u8 ErrFlag = 0;
1626 u16 phy_mode;
1627
1628 /* CR6 bit18=0, select 10/100M */
1629 update_cr6(db->cr6_data & ~0x40000, ioaddr);
1630
1631 phy_mode = dmfe_phy_read(db->ioaddr, db->phy_addr, 1, db->chip_id);
1632 phy_mode = dmfe_phy_read(db->ioaddr, db->phy_addr, 1, db->chip_id);
1633
1634 if ( (phy_mode & 0x24) == 0x24 ) {
1635 if (db->chip_id == PCI_DM9132_ID) /* DM9132 */
1636 phy_mode = dmfe_phy_read(db->ioaddr,
1637 db->phy_addr, 7, db->chip_id) & 0xf000;
1638 else /* DM9102/DM9102A */
1639 phy_mode = dmfe_phy_read(db->ioaddr,
1640 db->phy_addr, 17, db->chip_id) & 0xf000;
1641 switch (phy_mode) {
1642 case 0x1000: db->op_mode = DMFE_10MHF; break;
1643 case 0x2000: db->op_mode = DMFE_10MFD; break;
1644 case 0x4000: db->op_mode = DMFE_100MHF; break;
1645 case 0x8000: db->op_mode = DMFE_100MFD; break;
1646 default: db->op_mode = DMFE_10MHF;
1647 ErrFlag = 1;
1648 break;
1649 }
1650 } else {
1651 db->op_mode = DMFE_10MHF;
1652 DMFE_DBUG(0, "Link Failed :", phy_mode);
1653 ErrFlag = 1;
1654 }
1655
1656 return ErrFlag;
1657 }
1658
1659
1660 /*
1661 * Set 10/100 phyxcer capability
1662 * AUTO mode : phyxcer register4 is NIC capability
1663 * Force mode: phyxcer register4 is the force media
1664 */
1665
dmfe_set_phyxcer(struct dmfe_board_info * db)1666 static void dmfe_set_phyxcer(struct dmfe_board_info *db)
1667 {
1668 void __iomem *ioaddr = db->ioaddr;
1669 u16 phy_reg;
1670
1671 /* Select 10/100M phyxcer */
1672 db->cr6_data &= ~0x40000;
1673 update_cr6(db->cr6_data, ioaddr);
1674
1675 /* DM9009 Chip: Phyxcer reg18 bit12=0 */
1676 if (db->chip_id == PCI_DM9009_ID) {
1677 phy_reg = dmfe_phy_read(db->ioaddr,
1678 db->phy_addr, 18, db->chip_id) & ~0x1000;
1679
1680 dmfe_phy_write(db->ioaddr,
1681 db->phy_addr, 18, phy_reg, db->chip_id);
1682 }
1683
1684 /* Phyxcer capability setting */
1685 phy_reg = dmfe_phy_read(db->ioaddr, db->phy_addr, 4, db->chip_id) & ~0x01e0;
1686
1687 if (db->media_mode & DMFE_AUTO) {
1688 /* AUTO Mode */
1689 phy_reg |= db->PHY_reg4;
1690 } else {
1691 /* Force Mode */
1692 switch(db->media_mode) {
1693 case DMFE_10MHF: phy_reg |= 0x20; break;
1694 case DMFE_10MFD: phy_reg |= 0x40; break;
1695 case DMFE_100MHF: phy_reg |= 0x80; break;
1696 case DMFE_100MFD: phy_reg |= 0x100; break;
1697 }
1698 if (db->chip_id == PCI_DM9009_ID) phy_reg &= 0x61;
1699 }
1700
1701 /* Write new capability to Phyxcer Reg4 */
1702 if ( !(phy_reg & 0x01e0)) {
1703 phy_reg|=db->PHY_reg4;
1704 db->media_mode|=DMFE_AUTO;
1705 }
1706 dmfe_phy_write(db->ioaddr, db->phy_addr, 4, phy_reg, db->chip_id);
1707
1708 /* Restart Auto-Negotiation */
1709 if ( db->chip_type && (db->chip_id == PCI_DM9102_ID) )
1710 dmfe_phy_write(db->ioaddr, db->phy_addr, 0, 0x1800, db->chip_id);
1711 if ( !db->chip_type )
1712 dmfe_phy_write(db->ioaddr, db->phy_addr, 0, 0x1200, db->chip_id);
1713 }
1714
1715
1716 /*
1717 * Process op-mode
1718 * AUTO mode : PHY controller in Auto-negotiation Mode
1719 * Force mode: PHY controller in force mode with HUB
1720 * N-way force capability with SWITCH
1721 */
1722
dmfe_process_mode(struct dmfe_board_info * db)1723 static void dmfe_process_mode(struct dmfe_board_info *db)
1724 {
1725 u16 phy_reg;
1726
1727 /* Full Duplex Mode Check */
1728 if (db->op_mode & 0x4)
1729 db->cr6_data |= CR6_FDM; /* Set Full Duplex Bit */
1730 else
1731 db->cr6_data &= ~CR6_FDM; /* Clear Full Duplex Bit */
1732
1733 /* Transciver Selection */
1734 if (db->op_mode & 0x10) /* 1M HomePNA */
1735 db->cr6_data |= 0x40000;/* External MII select */
1736 else
1737 db->cr6_data &= ~0x40000;/* Internal 10/100 transciver */
1738
1739 update_cr6(db->cr6_data, db->ioaddr);
1740
1741 /* 10/100M phyxcer force mode need */
1742 if ( !(db->media_mode & 0x18)) {
1743 /* Forece Mode */
1744 phy_reg = dmfe_phy_read(db->ioaddr, db->phy_addr, 6, db->chip_id);
1745 if ( !(phy_reg & 0x1) ) {
1746 /* parter without N-Way capability */
1747 phy_reg = 0x0;
1748 switch(db->op_mode) {
1749 case DMFE_10MHF: phy_reg = 0x0; break;
1750 case DMFE_10MFD: phy_reg = 0x100; break;
1751 case DMFE_100MHF: phy_reg = 0x2000; break;
1752 case DMFE_100MFD: phy_reg = 0x2100; break;
1753 }
1754 dmfe_phy_write(db->ioaddr,
1755 db->phy_addr, 0, phy_reg, db->chip_id);
1756 if ( db->chip_type && (db->chip_id == PCI_DM9102_ID) )
1757 mdelay(20);
1758 dmfe_phy_write(db->ioaddr,
1759 db->phy_addr, 0, phy_reg, db->chip_id);
1760 }
1761 }
1762 }
1763
1764
1765 /*
1766 * Write a word to Phy register
1767 */
1768
dmfe_phy_write(void __iomem * ioaddr,u8 phy_addr,u8 offset,u16 phy_data,u32 chip_id)1769 static void dmfe_phy_write(void __iomem *ioaddr, u8 phy_addr, u8 offset,
1770 u16 phy_data, u32 chip_id)
1771 {
1772 u16 i;
1773
1774 if (chip_id == PCI_DM9132_ID) {
1775 dw16(0x80 + offset * 4, phy_data);
1776 } else {
1777 /* DM9102/DM9102A Chip */
1778
1779 /* Send 33 synchronization clock to Phy controller */
1780 for (i = 0; i < 35; i++)
1781 dmfe_phy_write_1bit(ioaddr, PHY_DATA_1);
1782
1783 /* Send start command(01) to Phy */
1784 dmfe_phy_write_1bit(ioaddr, PHY_DATA_0);
1785 dmfe_phy_write_1bit(ioaddr, PHY_DATA_1);
1786
1787 /* Send write command(01) to Phy */
1788 dmfe_phy_write_1bit(ioaddr, PHY_DATA_0);
1789 dmfe_phy_write_1bit(ioaddr, PHY_DATA_1);
1790
1791 /* Send Phy address */
1792 for (i = 0x10; i > 0; i = i >> 1)
1793 dmfe_phy_write_1bit(ioaddr,
1794 phy_addr & i ? PHY_DATA_1 : PHY_DATA_0);
1795
1796 /* Send register address */
1797 for (i = 0x10; i > 0; i = i >> 1)
1798 dmfe_phy_write_1bit(ioaddr,
1799 offset & i ? PHY_DATA_1 : PHY_DATA_0);
1800
1801 /* written trasnition */
1802 dmfe_phy_write_1bit(ioaddr, PHY_DATA_1);
1803 dmfe_phy_write_1bit(ioaddr, PHY_DATA_0);
1804
1805 /* Write a word data to PHY controller */
1806 for ( i = 0x8000; i > 0; i >>= 1)
1807 dmfe_phy_write_1bit(ioaddr,
1808 phy_data & i ? PHY_DATA_1 : PHY_DATA_0);
1809 }
1810 }
1811
1812
1813 /*
1814 * Read a word data from phy register
1815 */
1816
dmfe_phy_read(void __iomem * ioaddr,u8 phy_addr,u8 offset,u32 chip_id)1817 static u16 dmfe_phy_read(void __iomem *ioaddr, u8 phy_addr, u8 offset, u32 chip_id)
1818 {
1819 int i;
1820 u16 phy_data;
1821
1822 if (chip_id == PCI_DM9132_ID) {
1823 /* DM9132 Chip */
1824 phy_data = dr16(0x80 + offset * 4);
1825 } else {
1826 /* DM9102/DM9102A Chip */
1827
1828 /* Send 33 synchronization clock to Phy controller */
1829 for (i = 0; i < 35; i++)
1830 dmfe_phy_write_1bit(ioaddr, PHY_DATA_1);
1831
1832 /* Send start command(01) to Phy */
1833 dmfe_phy_write_1bit(ioaddr, PHY_DATA_0);
1834 dmfe_phy_write_1bit(ioaddr, PHY_DATA_1);
1835
1836 /* Send read command(10) to Phy */
1837 dmfe_phy_write_1bit(ioaddr, PHY_DATA_1);
1838 dmfe_phy_write_1bit(ioaddr, PHY_DATA_0);
1839
1840 /* Send Phy address */
1841 for (i = 0x10; i > 0; i = i >> 1)
1842 dmfe_phy_write_1bit(ioaddr,
1843 phy_addr & i ? PHY_DATA_1 : PHY_DATA_0);
1844
1845 /* Send register address */
1846 for (i = 0x10; i > 0; i = i >> 1)
1847 dmfe_phy_write_1bit(ioaddr,
1848 offset & i ? PHY_DATA_1 : PHY_DATA_0);
1849
1850 /* Skip transition state */
1851 dmfe_phy_read_1bit(ioaddr);
1852
1853 /* read 16bit data */
1854 for (phy_data = 0, i = 0; i < 16; i++) {
1855 phy_data <<= 1;
1856 phy_data |= dmfe_phy_read_1bit(ioaddr);
1857 }
1858 }
1859
1860 return phy_data;
1861 }
1862
1863
1864 /*
1865 * Write one bit data to Phy Controller
1866 */
1867
dmfe_phy_write_1bit(void __iomem * ioaddr,u32 phy_data)1868 static void dmfe_phy_write_1bit(void __iomem *ioaddr, u32 phy_data)
1869 {
1870 dw32(DCR9, phy_data); /* MII Clock Low */
1871 udelay(1);
1872 dw32(DCR9, phy_data | MDCLKH); /* MII Clock High */
1873 udelay(1);
1874 dw32(DCR9, phy_data); /* MII Clock Low */
1875 udelay(1);
1876 }
1877
1878
1879 /*
1880 * Read one bit phy data from PHY controller
1881 */
1882
dmfe_phy_read_1bit(void __iomem * ioaddr)1883 static u16 dmfe_phy_read_1bit(void __iomem *ioaddr)
1884 {
1885 u16 phy_data;
1886
1887 dw32(DCR9, 0x50000);
1888 udelay(1);
1889 phy_data = (dr32(DCR9) >> 19) & 0x1;
1890 dw32(DCR9, 0x40000);
1891 udelay(1);
1892
1893 return phy_data;
1894 }
1895
1896
1897 /*
1898 * Parser SROM and media mode
1899 */
1900
dmfe_parse_srom(struct dmfe_board_info * db)1901 static void dmfe_parse_srom(struct dmfe_board_info * db)
1902 {
1903 char * srom = db->srom;
1904 int dmfe_mode, tmp_reg;
1905
1906 DMFE_DBUG(0, "dmfe_parse_srom() ", 0);
1907
1908 /* Init CR15 */
1909 db->cr15_data = CR15_DEFAULT;
1910
1911 /* Check SROM Version */
1912 if ( ( (int) srom[18] & 0xff) == SROM_V41_CODE) {
1913 /* SROM V4.01 */
1914 /* Get NIC support media mode */
1915 db->NIC_capability = le16_to_cpup((__le16 *) (srom + 34));
1916 db->PHY_reg4 = 0;
1917 for (tmp_reg = 1; tmp_reg < 0x10; tmp_reg <<= 1) {
1918 switch( db->NIC_capability & tmp_reg ) {
1919 case 0x1: db->PHY_reg4 |= 0x0020; break;
1920 case 0x2: db->PHY_reg4 |= 0x0040; break;
1921 case 0x4: db->PHY_reg4 |= 0x0080; break;
1922 case 0x8: db->PHY_reg4 |= 0x0100; break;
1923 }
1924 }
1925
1926 /* Media Mode Force or not check */
1927 dmfe_mode = (le32_to_cpup((__le32 *) (srom + 34)) &
1928 le32_to_cpup((__le32 *) (srom + 36)));
1929 switch(dmfe_mode) {
1930 case 0x4: dmfe_media_mode = DMFE_100MHF; break; /* 100MHF */
1931 case 0x2: dmfe_media_mode = DMFE_10MFD; break; /* 10MFD */
1932 case 0x8: dmfe_media_mode = DMFE_100MFD; break; /* 100MFD */
1933 case 0x100:
1934 case 0x200: dmfe_media_mode = DMFE_1M_HPNA; break;/* HomePNA */
1935 }
1936
1937 /* Special Function setting */
1938 /* VLAN function */
1939 if ( (SF_mode & 0x1) || (srom[43] & 0x80) )
1940 db->cr15_data |= 0x40;
1941
1942 /* Flow Control */
1943 if ( (SF_mode & 0x2) || (srom[40] & 0x1) )
1944 db->cr15_data |= 0x400;
1945
1946 /* TX pause packet */
1947 if ( (SF_mode & 0x4) || (srom[40] & 0xe) )
1948 db->cr15_data |= 0x9800;
1949 }
1950
1951 /* Parse HPNA parameter */
1952 db->HPNA_command = 1;
1953
1954 /* Accept remote command or not */
1955 if (HPNA_rx_cmd == 0)
1956 db->HPNA_command |= 0x8000;
1957
1958 /* Issue remote command & operation mode */
1959 if (HPNA_tx_cmd == 1)
1960 switch(HPNA_mode) { /* Issue Remote Command */
1961 case 0: db->HPNA_command |= 0x0904; break;
1962 case 1: db->HPNA_command |= 0x0a00; break;
1963 case 2: db->HPNA_command |= 0x0506; break;
1964 case 3: db->HPNA_command |= 0x0602; break;
1965 }
1966 else
1967 switch(HPNA_mode) { /* Don't Issue */
1968 case 0: db->HPNA_command |= 0x0004; break;
1969 case 1: db->HPNA_command |= 0x0000; break;
1970 case 2: db->HPNA_command |= 0x0006; break;
1971 case 3: db->HPNA_command |= 0x0002; break;
1972 }
1973
1974 /* Check DM9801 or DM9802 present or not */
1975 db->HPNA_present = 0;
1976 update_cr6(db->cr6_data | 0x40000, db->ioaddr);
1977 tmp_reg = dmfe_phy_read(db->ioaddr, db->phy_addr, 3, db->chip_id);
1978 if ( ( tmp_reg & 0xfff0 ) == 0xb900 ) {
1979 /* DM9801 or DM9802 present */
1980 db->HPNA_timer = 8;
1981 if ( dmfe_phy_read(db->ioaddr, db->phy_addr, 31, db->chip_id) == 0x4404) {
1982 /* DM9801 HomeRun */
1983 db->HPNA_present = 1;
1984 dmfe_program_DM9801(db, tmp_reg);
1985 } else {
1986 /* DM9802 LongRun */
1987 db->HPNA_present = 2;
1988 dmfe_program_DM9802(db);
1989 }
1990 }
1991
1992 }
1993
1994
1995 /*
1996 * Init HomeRun DM9801
1997 */
1998
dmfe_program_DM9801(struct dmfe_board_info * db,int HPNA_rev)1999 static void dmfe_program_DM9801(struct dmfe_board_info * db, int HPNA_rev)
2000 {
2001 uint reg17, reg25;
2002
2003 if ( !HPNA_NoiseFloor ) HPNA_NoiseFloor = DM9801_NOISE_FLOOR;
2004 switch(HPNA_rev) {
2005 case 0xb900: /* DM9801 E3 */
2006 db->HPNA_command |= 0x1000;
2007 reg25 = dmfe_phy_read(db->ioaddr, db->phy_addr, 24, db->chip_id);
2008 reg25 = ( (reg25 + HPNA_NoiseFloor) & 0xff) | 0xf000;
2009 reg17 = dmfe_phy_read(db->ioaddr, db->phy_addr, 17, db->chip_id);
2010 break;
2011 case 0xb901: /* DM9801 E4 */
2012 reg25 = dmfe_phy_read(db->ioaddr, db->phy_addr, 25, db->chip_id);
2013 reg25 = (reg25 & 0xff00) + HPNA_NoiseFloor;
2014 reg17 = dmfe_phy_read(db->ioaddr, db->phy_addr, 17, db->chip_id);
2015 reg17 = (reg17 & 0xfff0) + HPNA_NoiseFloor + 3;
2016 break;
2017 case 0xb902: /* DM9801 E5 */
2018 case 0xb903: /* DM9801 E6 */
2019 default:
2020 db->HPNA_command |= 0x1000;
2021 reg25 = dmfe_phy_read(db->ioaddr, db->phy_addr, 25, db->chip_id);
2022 reg25 = (reg25 & 0xff00) + HPNA_NoiseFloor - 5;
2023 reg17 = dmfe_phy_read(db->ioaddr, db->phy_addr, 17, db->chip_id);
2024 reg17 = (reg17 & 0xfff0) + HPNA_NoiseFloor;
2025 break;
2026 }
2027 dmfe_phy_write(db->ioaddr, db->phy_addr, 16, db->HPNA_command, db->chip_id);
2028 dmfe_phy_write(db->ioaddr, db->phy_addr, 17, reg17, db->chip_id);
2029 dmfe_phy_write(db->ioaddr, db->phy_addr, 25, reg25, db->chip_id);
2030 }
2031
2032
2033 /*
2034 * Init HomeRun DM9802
2035 */
2036
dmfe_program_DM9802(struct dmfe_board_info * db)2037 static void dmfe_program_DM9802(struct dmfe_board_info * db)
2038 {
2039 uint phy_reg;
2040
2041 if ( !HPNA_NoiseFloor ) HPNA_NoiseFloor = DM9802_NOISE_FLOOR;
2042 dmfe_phy_write(db->ioaddr, db->phy_addr, 16, db->HPNA_command, db->chip_id);
2043 phy_reg = dmfe_phy_read(db->ioaddr, db->phy_addr, 25, db->chip_id);
2044 phy_reg = ( phy_reg & 0xff00) + HPNA_NoiseFloor;
2045 dmfe_phy_write(db->ioaddr, db->phy_addr, 25, phy_reg, db->chip_id);
2046 }
2047
2048
2049 /*
2050 * Check remote HPNA power and speed status. If not correct,
2051 * issue command again.
2052 */
2053
dmfe_HPNA_remote_cmd_chk(struct dmfe_board_info * db)2054 static void dmfe_HPNA_remote_cmd_chk(struct dmfe_board_info * db)
2055 {
2056 uint phy_reg;
2057
2058 /* Got remote device status */
2059 phy_reg = dmfe_phy_read(db->ioaddr, db->phy_addr, 17, db->chip_id) & 0x60;
2060 switch(phy_reg) {
2061 case 0x00: phy_reg = 0x0a00;break; /* LP/LS */
2062 case 0x20: phy_reg = 0x0900;break; /* LP/HS */
2063 case 0x40: phy_reg = 0x0600;break; /* HP/LS */
2064 case 0x60: phy_reg = 0x0500;break; /* HP/HS */
2065 }
2066
2067 /* Check remote device status match our setting ot not */
2068 if ( phy_reg != (db->HPNA_command & 0x0f00) ) {
2069 dmfe_phy_write(db->ioaddr, db->phy_addr, 16, db->HPNA_command,
2070 db->chip_id);
2071 db->HPNA_timer=8;
2072 } else
2073 db->HPNA_timer=600; /* Match, every 10 minutes, check */
2074 }
2075
2076
2077
2078 static const struct pci_device_id dmfe_pci_tbl[] = {
2079 { 0x1282, 0x9132, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_DM9132_ID },
2080 { 0x1282, 0x9102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_DM9102_ID },
2081 { 0x1282, 0x9100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_DM9100_ID },
2082 { 0x1282, 0x9009, PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_DM9009_ID },
2083 { 0, }
2084 };
2085 MODULE_DEVICE_TABLE(pci, dmfe_pci_tbl);
2086
dmfe_suspend(struct device * dev_d)2087 static int __maybe_unused dmfe_suspend(struct device *dev_d)
2088 {
2089 struct net_device *dev = dev_get_drvdata(dev_d);
2090 struct dmfe_board_info *db = netdev_priv(dev);
2091 void __iomem *ioaddr = db->ioaddr;
2092
2093 /* Disable upper layer interface */
2094 netif_device_detach(dev);
2095
2096 /* Disable Tx/Rx */
2097 db->cr6_data &= ~(CR6_RXSC | CR6_TXSC);
2098 update_cr6(db->cr6_data, ioaddr);
2099
2100 /* Disable Interrupt */
2101 dw32(DCR7, 0);
2102 dw32(DCR5, dr32(DCR5));
2103
2104 /* Fre RX buffers */
2105 dmfe_free_rxbuffer(db);
2106
2107 /* Enable WOL */
2108 device_wakeup_enable(dev_d);
2109
2110 return 0;
2111 }
2112
dmfe_resume(struct device * dev_d)2113 static int __maybe_unused dmfe_resume(struct device *dev_d)
2114 {
2115 struct net_device *dev = dev_get_drvdata(dev_d);
2116
2117 /* Re-initialize DM910X board */
2118 dmfe_init_dm910x(dev);
2119
2120 /* Disable WOL */
2121 device_wakeup_disable(dev_d);
2122
2123 /* Restart upper layer interface */
2124 netif_device_attach(dev);
2125
2126 return 0;
2127 }
2128
2129 static SIMPLE_DEV_PM_OPS(dmfe_pm_ops, dmfe_suspend, dmfe_resume);
2130
2131 static struct pci_driver dmfe_driver = {
2132 .name = "dmfe",
2133 .id_table = dmfe_pci_tbl,
2134 .probe = dmfe_init_one,
2135 .remove = dmfe_remove_one,
2136 .driver.pm = &dmfe_pm_ops,
2137 };
2138
2139 MODULE_AUTHOR("Sten Wang, sten_wang@davicom.com.tw");
2140 MODULE_DESCRIPTION("Davicom DM910X fast ethernet driver");
2141 MODULE_LICENSE("GPL");
2142
2143 module_param(debug, int, 0);
2144 module_param(mode, byte, 0);
2145 module_param(cr6set, int, 0);
2146 module_param(chkmode, byte, 0);
2147 module_param(HPNA_mode, byte, 0);
2148 module_param(HPNA_rx_cmd, byte, 0);
2149 module_param(HPNA_tx_cmd, byte, 0);
2150 module_param(HPNA_NoiseFloor, byte, 0);
2151 module_param(SF_mode, byte, 0);
2152 MODULE_PARM_DESC(debug, "Davicom DM9xxx enable debugging (0-1)");
2153 MODULE_PARM_DESC(mode, "Davicom DM9xxx: "
2154 "Bit 0: 10/100Mbps, bit 2: duplex, bit 8: HomePNA");
2155
2156 MODULE_PARM_DESC(SF_mode, "Davicom DM9xxx special function "
2157 "(bit 0: VLAN, bit 1 Flow Control, bit 2: TX pause packet)");
2158
2159 /* Description:
2160 * when user used insmod to add module, system invoked init_module()
2161 * to initialize and register.
2162 */
2163
dmfe_init_module(void)2164 static int __init dmfe_init_module(void)
2165 {
2166 int rc;
2167
2168 DMFE_DBUG(0, "init_module() ", debug);
2169
2170 if (debug)
2171 dmfe_debug = debug; /* set debug flag */
2172 if (cr6set)
2173 dmfe_cr6_user_set = cr6set;
2174
2175 switch (mode) {
2176 case DMFE_10MHF:
2177 case DMFE_100MHF:
2178 case DMFE_10MFD:
2179 case DMFE_100MFD:
2180 case DMFE_1M_HPNA:
2181 dmfe_media_mode = mode;
2182 break;
2183 default:
2184 dmfe_media_mode = DMFE_AUTO;
2185 break;
2186 }
2187
2188 if (HPNA_mode > 4)
2189 HPNA_mode = 0; /* Default: LP/HS */
2190 if (HPNA_rx_cmd > 1)
2191 HPNA_rx_cmd = 0; /* Default: Ignored remote cmd */
2192 if (HPNA_tx_cmd > 1)
2193 HPNA_tx_cmd = 0; /* Default: Don't issue remote cmd */
2194 if (HPNA_NoiseFloor > 15)
2195 HPNA_NoiseFloor = 0;
2196
2197 rc = pci_register_driver(&dmfe_driver);
2198 if (rc < 0)
2199 return rc;
2200
2201 return 0;
2202 }
2203
2204
2205 /*
2206 * Description:
2207 * when user used rmmod to delete module, system invoked clean_module()
2208 * to un-register all registered services.
2209 */
2210
dmfe_cleanup_module(void)2211 static void __exit dmfe_cleanup_module(void)
2212 {
2213 DMFE_DBUG(0, "dmfe_cleanup_module() ", debug);
2214 pci_unregister_driver(&dmfe_driver);
2215 }
2216
2217 module_init(dmfe_init_module);
2218 module_exit(dmfe_cleanup_module);
2219