1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2007, 2010 Freescale Semiconductor, Inc.
4 *
5 * Author: Roy Zang <tie-fei.zang@freescale.com>, Sep, 2007
6 *
7 * Description:
8 * ULI 526x Ethernet port driver.
9 * Based on the Linux driver: drivers/net/tulip/uli526x.c
10 */
11
12 #include <common.h>
13 #include <malloc.h>
14 #include <net.h>
15 #include <netdev.h>
16 #include <asm/io.h>
17 #include <pci.h>
18 #include <miiphy.h>
19 #include <linux/delay.h>
20
21 /* some kernel function compatible define */
22
23 #undef DEBUG
24
25 /* Board/System/Debug information/definition */
26 #define ULI_VENDOR_ID 0x10B9
27 #define ULI5261_DEVICE_ID 0x5261
28 #define ULI5263_DEVICE_ID 0x5263
29 /* ULi M5261 ID*/
30 #define PCI_ULI5261_ID (ULI5261_DEVICE_ID << 16 | ULI_VENDOR_ID)
31 /* ULi M5263 ID*/
32 #define PCI_ULI5263_ID (ULI5263_DEVICE_ID << 16 | ULI_VENDOR_ID)
33
34 #define ULI526X_IO_SIZE 0x100
35 #define TX_DESC_CNT 0x10 /* Allocated Tx descriptors */
36 #define RX_DESC_CNT PKTBUFSRX /* Allocated Rx descriptors */
37 #define TX_FREE_DESC_CNT (TX_DESC_CNT - 2) /* Max TX packet count */
38 #define TX_WAKE_DESC_CNT (TX_DESC_CNT - 3) /* TX wakeup count */
39 #define DESC_ALL_CNT (TX_DESC_CNT + RX_DESC_CNT)
40 #define TX_BUF_ALLOC 0x300
41 #define RX_ALLOC_SIZE PKTSIZE
42 #define ULI526X_RESET 1
43 #define CR0_DEFAULT 0
44 #define CR6_DEFAULT 0x22200000
45 #define CR7_DEFAULT 0x180c1
46 #define CR15_DEFAULT 0x06 /* TxJabber RxWatchdog */
47 #define TDES0_ERR_MASK 0x4302 /* TXJT, LC, EC, FUE */
48 #define MAX_PACKET_SIZE 1514
49 #define ULI5261_MAX_MULTICAST 14
50 #define RX_COPY_SIZE 100
51 #define MAX_CHECK_PACKET 0x8000
52
53 #define ULI526X_10MHF 0
54 #define ULI526X_100MHF 1
55 #define ULI526X_10MFD 4
56 #define ULI526X_100MFD 5
57 #define ULI526X_AUTO 8
58
59 #define ULI526X_TXTH_72 0x400000 /* TX TH 72 byte */
60 #define ULI526X_TXTH_96 0x404000 /* TX TH 96 byte */
61 #define ULI526X_TXTH_128 0x0000 /* TX TH 128 byte */
62 #define ULI526X_TXTH_256 0x4000 /* TX TH 256 byte */
63 #define ULI526X_TXTH_512 0x8000 /* TX TH 512 byte */
64 #define ULI526X_TXTH_1K 0xC000 /* TX TH 1K byte */
65
66 /* CR9 definition: SROM/MII */
67 #define CR9_SROM_READ 0x4800
68 #define CR9_SRCS 0x1
69 #define CR9_SRCLK 0x2
70 #define CR9_CRDOUT 0x8
71 #define SROM_DATA_0 0x0
72 #define SROM_DATA_1 0x4
73 #define PHY_DATA_1 0x20000
74 #define PHY_DATA_0 0x00000
75 #define MDCLKH 0x10000
76
77 #define PHY_POWER_DOWN 0x800
78
79 #define SROM_V41_CODE 0x14
80
81 #define SROM_CLK_WRITE(data, ioaddr) do { \
82 outl(data|CR9_SROM_READ|CR9_SRCS, ioaddr); \
83 udelay(5); \
84 outl(data|CR9_SROM_READ|CR9_SRCS|CR9_SRCLK, ioaddr); \
85 udelay(5); \
86 outl(data|CR9_SROM_READ|CR9_SRCS, ioaddr); \
87 udelay(5); \
88 } while (0)
89
90 /* Structure/enum declaration */
91
92 struct tx_desc {
93 u32 tdes0, tdes1, tdes2, tdes3; /* Data for the card */
94 char *tx_buf_ptr; /* Data for us */
95 struct tx_desc *next_tx_desc;
96 };
97
98 struct rx_desc {
99 u32 rdes0, rdes1, rdes2, rdes3; /* Data for the card */
100 char *rx_buf_ptr; /* Data for us */
101 struct rx_desc *next_rx_desc;
102 };
103
104 struct uli526x_board_info {
105 u32 chip_id; /* Chip vendor/Device ID */
106 pci_dev_t pdev;
107
108 long ioaddr; /* I/O base address */
109 u32 cr0_data;
110 u32 cr5_data;
111 u32 cr6_data;
112 u32 cr7_data;
113 u32 cr15_data;
114
115 /* pointer for memory physical address */
116 dma_addr_t buf_pool_dma_ptr; /* Tx buffer pool memory */
117 dma_addr_t buf_pool_dma_start; /* Tx buffer pool align dword */
118 dma_addr_t desc_pool_dma_ptr; /* descriptor pool memory */
119 dma_addr_t first_tx_desc_dma;
120 dma_addr_t first_rx_desc_dma;
121
122 /* descriptor pointer */
123 unsigned char *buf_pool_ptr; /* Tx buffer pool memory */
124 unsigned char *buf_pool_start; /* Tx buffer pool align dword */
125 unsigned char *desc_pool_ptr; /* descriptor pool memory */
126 struct tx_desc *first_tx_desc;
127 struct tx_desc *tx_insert_ptr;
128 struct tx_desc *tx_remove_ptr;
129 struct rx_desc *first_rx_desc;
130 struct rx_desc *rx_ready_ptr; /* packet come pointer */
131 unsigned long tx_packet_cnt; /* transmitted packet count */
132
133 u16 PHY_reg4; /* Saved Phyxcer register 4 value */
134
135 u8 media_mode; /* user specify media mode */
136 u8 op_mode; /* real work dedia mode */
137 u8 phy_addr;
138
139 /* NIC SROM data */
140 unsigned char srom[128];
141 };
142
143 enum uli526x_offsets {
144 DCR0 = 0x00, DCR1 = 0x08, DCR2 = 0x10, DCR3 = 0x18, DCR4 = 0x20,
145 DCR5 = 0x28, DCR6 = 0x30, DCR7 = 0x38, DCR8 = 0x40, DCR9 = 0x48,
146 DCR10 = 0x50, DCR11 = 0x58, DCR12 = 0x60, DCR13 = 0x68, DCR14 = 0x70,
147 DCR15 = 0x78
148 };
149
150 enum uli526x_CR6_bits {
151 CR6_RXSC = 0x2, CR6_PBF = 0x8, CR6_PM = 0x40, CR6_PAM = 0x80,
152 CR6_FDM = 0x200, CR6_TXSC = 0x2000, CR6_STI = 0x100000,
153 CR6_SFT = 0x200000, CR6_RXA = 0x40000000, CR6_NO_PURGE = 0x20000000
154 };
155
156 /* Global variable declaration -- */
157
158 static unsigned char uli526x_media_mode = ULI526X_AUTO;
159
160 static struct tx_desc desc_pool_array[DESC_ALL_CNT + 0x20]
161 __attribute__ ((aligned(32)));
162 static char buf_pool[TX_BUF_ALLOC * TX_DESC_CNT + 4];
163
164 /* For module input parameter */
165 static int mode = 8;
166
167 /* function declaration -- */
168 static int uli526x_start_xmit(struct eth_device *dev, void *packet, int length);
169 static u16 read_srom_word(long, int);
170 static void uli526x_descriptor_init(struct uli526x_board_info *, unsigned long);
171 static void allocate_rx_buffer(struct uli526x_board_info *);
172 static void update_cr6(u32, unsigned long);
173 static u16 uli_phy_read(unsigned long, u8, u8, u32);
174 static u16 phy_readby_cr10(unsigned long, u8, u8);
175 static void uli_phy_write(unsigned long, u8, u8, u16, u32);
176 static void phy_writeby_cr10(unsigned long, u8, u8, u16);
177 static void phy_write_1bit(unsigned long, u32, u32);
178 static u16 phy_read_1bit(unsigned long, u32);
179 static int uli526x_rx_packet(struct eth_device *);
180 static void uli526x_free_tx_pkt(struct eth_device *,
181 struct uli526x_board_info *);
182 static void uli526x_reuse_buf(struct rx_desc *);
183 static void uli526x_init(struct eth_device *);
184 static void uli526x_set_phyxcer(struct uli526x_board_info *);
185
186
187 static int uli526x_init_one(struct eth_device *, struct bd_info *);
188 static void uli526x_disable(struct eth_device *);
189 static void set_mac_addr(struct eth_device *);
190
191 static struct pci_device_id uli526x_pci_tbl[] = {
192 { ULI_VENDOR_ID, ULI5261_DEVICE_ID}, /* 5261 device */
193 { ULI_VENDOR_ID, ULI5263_DEVICE_ID}, /* 5263 device */
194 {}
195 };
196
197 /* ULI526X network board routine */
198
199 /*
200 * Search ULI526X board, register it
201 */
202
uli526x_initialize(struct bd_info * bis)203 int uli526x_initialize(struct bd_info *bis)
204 {
205 pci_dev_t devno;
206 int card_number = 0;
207 struct eth_device *dev;
208 struct uli526x_board_info *db; /* board information structure */
209
210 u32 iobase;
211 int idx = 0;
212
213 while (1) {
214 /* Find PCI device */
215 devno = pci_find_devices(uli526x_pci_tbl, idx++);
216 if (devno < 0)
217 break;
218
219 pci_read_config_dword(devno, PCI_BASE_ADDRESS_1, &iobase);
220 iobase &= ~0xf;
221
222 dev = (struct eth_device *)malloc(sizeof *dev);
223 if (!dev) {
224 printf("uli526x: Can not allocate memory\n");
225 break;
226 }
227 memset(dev, 0, sizeof(*dev));
228 sprintf(dev->name, "uli526x#%d", card_number);
229 db = (struct uli526x_board_info *)
230 malloc(sizeof(struct uli526x_board_info));
231
232 dev->priv = db;
233 db->pdev = devno;
234 dev->iobase = iobase;
235
236 dev->init = uli526x_init_one;
237 dev->halt = uli526x_disable;
238 dev->send = uli526x_start_xmit;
239 dev->recv = uli526x_rx_packet;
240
241 /* init db */
242 db->ioaddr = dev->iobase;
243 /* get chip id */
244
245 pci_read_config_dword(devno, PCI_VENDOR_ID, &db->chip_id);
246 #ifdef DEBUG
247 printf("uli526x: uli526x @0x%x\n", iobase);
248 printf("uli526x: chip_id%x\n", db->chip_id);
249 #endif
250 eth_register(dev);
251 card_number++;
252 pci_write_config_byte(devno, PCI_LATENCY_TIMER, 0x20);
253 udelay(10 * 1000);
254 }
255 return card_number;
256 }
257
uli526x_init_one(struct eth_device * dev,struct bd_info * bis)258 static int uli526x_init_one(struct eth_device *dev, struct bd_info *bis)
259 {
260
261 struct uli526x_board_info *db = dev->priv;
262 int i;
263
264 switch (mode) {
265 case ULI526X_10MHF:
266 case ULI526X_100MHF:
267 case ULI526X_10MFD:
268 case ULI526X_100MFD:
269 uli526x_media_mode = mode;
270 break;
271 default:
272 uli526x_media_mode = ULI526X_AUTO;
273 break;
274 }
275
276 /* Allocate Tx/Rx descriptor memory */
277 db->desc_pool_ptr = (uchar *)&desc_pool_array[0];
278 db->desc_pool_dma_ptr = (dma_addr_t)&desc_pool_array[0];
279 if (db->desc_pool_ptr == NULL)
280 return -1;
281
282 db->buf_pool_ptr = (uchar *)&buf_pool[0];
283 db->buf_pool_dma_ptr = (dma_addr_t)&buf_pool[0];
284 if (db->buf_pool_ptr == NULL)
285 return -1;
286
287 db->first_tx_desc = (struct tx_desc *) db->desc_pool_ptr;
288 db->first_tx_desc_dma = db->desc_pool_dma_ptr;
289
290 db->buf_pool_start = db->buf_pool_ptr;
291 db->buf_pool_dma_start = db->buf_pool_dma_ptr;
292
293 #ifdef DEBUG
294 printf("%s(): db->ioaddr= 0x%x\n",
295 __FUNCTION__, db->ioaddr);
296 printf("%s(): media_mode= 0x%x\n",
297 __FUNCTION__, uli526x_media_mode);
298 printf("%s(): db->desc_pool_ptr= 0x%x\n",
299 __FUNCTION__, db->desc_pool_ptr);
300 printf("%s(): db->desc_pool_dma_ptr= 0x%x\n",
301 __FUNCTION__, db->desc_pool_dma_ptr);
302 printf("%s(): db->buf_pool_ptr= 0x%x\n",
303 __FUNCTION__, db->buf_pool_ptr);
304 printf("%s(): db->buf_pool_dma_ptr= 0x%x\n",
305 __FUNCTION__, db->buf_pool_dma_ptr);
306 #endif
307
308 /* read 64 word srom data */
309 for (i = 0; i < 64; i++)
310 ((u16 *) db->srom)[i] = cpu_to_le16(read_srom_word(db->ioaddr,
311 i));
312
313 /* Set Node address */
314 if (((db->srom[0] == 0xff) && (db->srom[1] == 0xff)) ||
315 ((db->srom[0] == 0x00) && (db->srom[1] == 0x00)))
316 /* SROM absent, so write MAC address to ID Table */
317 set_mac_addr(dev);
318 else { /*Exist SROM*/
319 for (i = 0; i < 6; i++)
320 dev->enetaddr[i] = db->srom[20 + i];
321 }
322 #ifdef DEBUG
323 for (i = 0; i < 6; i++)
324 printf("%c%02x", i ? ':' : ' ', dev->enetaddr[i]);
325 #endif
326 db->PHY_reg4 = 0x1e0;
327
328 /* system variable init */
329 db->cr6_data = CR6_DEFAULT ;
330 db->cr6_data |= ULI526X_TXTH_256;
331 db->cr0_data = CR0_DEFAULT;
332 uli526x_init(dev);
333 return 0;
334 }
335
uli526x_disable(struct eth_device * dev)336 static void uli526x_disable(struct eth_device *dev)
337 {
338 #ifdef DEBUG
339 printf("uli526x_disable\n");
340 #endif
341 struct uli526x_board_info *db = dev->priv;
342
343 if (!((inl(db->ioaddr + DCR12)) & 0x8)) {
344 /* Reset & stop ULI526X board */
345 outl(ULI526X_RESET, db->ioaddr + DCR0);
346 udelay(5);
347 uli_phy_write(db->ioaddr, db->phy_addr, 0, 0x8000, db->chip_id);
348
349 /* reset the board */
350 db->cr6_data &= ~(CR6_RXSC | CR6_TXSC); /* Disable Tx/Rx */
351 update_cr6(db->cr6_data, dev->iobase);
352 outl(0, dev->iobase + DCR7); /* Disable Interrupt */
353 outl(inl(dev->iobase + DCR5), dev->iobase + DCR5);
354 }
355 }
356
357 /* Initialize ULI526X board
358 * Reset ULI526X board
359 * Initialize TX/Rx descriptor chain structure
360 * Send the set-up frame
361 * Enable Tx/Rx machine
362 */
363
uli526x_init(struct eth_device * dev)364 static void uli526x_init(struct eth_device *dev)
365 {
366
367 struct uli526x_board_info *db = dev->priv;
368 u8 phy_tmp;
369 u16 phy_value;
370 u16 phy_reg_reset;
371
372 /* Reset M526x MAC controller */
373 outl(ULI526X_RESET, db->ioaddr + DCR0); /* RESET MAC */
374 udelay(100);
375 outl(db->cr0_data, db->ioaddr + DCR0);
376 udelay(5);
377
378 /* Phy addr : In some boards,M5261/M5263 phy address != 1 */
379 db->phy_addr = 1;
380 db->tx_packet_cnt = 0;
381 for (phy_tmp = 0; phy_tmp < 32; phy_tmp++) {
382 /* peer add */
383 phy_value = uli_phy_read(db->ioaddr, phy_tmp, 3, db->chip_id);
384 if (phy_value != 0xffff && phy_value != 0) {
385 db->phy_addr = phy_tmp;
386 break;
387 }
388 }
389
390 #ifdef DEBUG
391 printf("%s(): db->ioaddr= 0x%x\n", __FUNCTION__, db->ioaddr);
392 printf("%s(): db->phy_addr= 0x%x\n", __FUNCTION__, db->phy_addr);
393 #endif
394 if (phy_tmp == 32)
395 printf("Can not find the phy address!!!");
396
397 /* Parser SROM and media mode */
398 db->media_mode = uli526x_media_mode;
399
400 if (!(inl(db->ioaddr + DCR12) & 0x8)) {
401 /* Phyxcer capability setting */
402 phy_reg_reset = uli_phy_read(db->ioaddr,
403 db->phy_addr, 0, db->chip_id);
404 phy_reg_reset = (phy_reg_reset | 0x8000);
405 uli_phy_write(db->ioaddr, db->phy_addr, 0,
406 phy_reg_reset, db->chip_id);
407 udelay(500);
408
409 /* Process Phyxcer Media Mode */
410 uli526x_set_phyxcer(db);
411 }
412 /* Media Mode Process */
413 if (!(db->media_mode & ULI526X_AUTO))
414 db->op_mode = db->media_mode; /* Force Mode */
415
416 /* Initialize Transmit/Receive decriptor and CR3/4 */
417 uli526x_descriptor_init(db, db->ioaddr);
418
419 /* Init CR6 to program M526X operation */
420 update_cr6(db->cr6_data, db->ioaddr);
421
422 /* Init CR7, interrupt active bit */
423 db->cr7_data = CR7_DEFAULT;
424 outl(db->cr7_data, db->ioaddr + DCR7);
425
426 /* Init CR15, Tx jabber and Rx watchdog timer */
427 outl(db->cr15_data, db->ioaddr + DCR15);
428
429 /* Enable ULI526X Tx/Rx function */
430 db->cr6_data |= CR6_RXSC | CR6_TXSC;
431 update_cr6(db->cr6_data, db->ioaddr);
432 while (!(inl(db->ioaddr + DCR12) & 0x8))
433 udelay(10);
434 }
435
436 /*
437 * Hardware start transmission.
438 * Send a packet to media from the upper layer.
439 */
440
uli526x_start_xmit(struct eth_device * dev,void * packet,int length)441 static int uli526x_start_xmit(struct eth_device *dev, void *packet, int length)
442 {
443 struct uli526x_board_info *db = dev->priv;
444 struct tx_desc *txptr;
445 unsigned int len = length;
446 /* Too large packet check */
447 if (len > MAX_PACKET_SIZE) {
448 printf(": big packet = %d\n", len);
449 return 0;
450 }
451
452 /* No Tx resource check, it never happen nromally */
453 if (db->tx_packet_cnt >= TX_FREE_DESC_CNT) {
454 printf("No Tx resource %ld\n", db->tx_packet_cnt);
455 return 0;
456 }
457
458 /* Disable NIC interrupt */
459 outl(0, dev->iobase + DCR7);
460
461 /* transmit this packet */
462 txptr = db->tx_insert_ptr;
463 memcpy((char *)txptr->tx_buf_ptr, (char *)packet, (int)length);
464 txptr->tdes1 = cpu_to_le32(0xe1000000 | length);
465
466 /* Point to next transmit free descriptor */
467 db->tx_insert_ptr = txptr->next_tx_desc;
468
469 /* Transmit Packet Process */
470 if ((db->tx_packet_cnt < TX_DESC_CNT)) {
471 txptr->tdes0 = cpu_to_le32(0x80000000); /* Set owner bit */
472 db->tx_packet_cnt++; /* Ready to send */
473 outl(0x1, dev->iobase + DCR1); /* Issue Tx polling */
474 }
475
476 /* Got ULI526X status */
477 db->cr5_data = inl(db->ioaddr + DCR5);
478 outl(db->cr5_data, db->ioaddr + DCR5);
479
480 #ifdef TX_DEBUG
481 printf("%s(): length = 0x%x\n", __FUNCTION__, length);
482 printf("%s(): cr5_data=%x\n", __FUNCTION__, db->cr5_data);
483 #endif
484
485 outl(db->cr7_data, dev->iobase + DCR7);
486 uli526x_free_tx_pkt(dev, db);
487
488 return length;
489 }
490
491 /*
492 * Free TX resource after TX complete
493 */
494
uli526x_free_tx_pkt(struct eth_device * dev,struct uli526x_board_info * db)495 static void uli526x_free_tx_pkt(struct eth_device *dev,
496 struct uli526x_board_info *db)
497 {
498 struct tx_desc *txptr;
499 u32 tdes0;
500
501 txptr = db->tx_remove_ptr;
502 while (db->tx_packet_cnt) {
503 tdes0 = le32_to_cpu(txptr->tdes0);
504 /* printf(DRV_NAME ": tdes0=%x\n", tdes0); */
505 if (tdes0 & 0x80000000)
506 break;
507
508 /* A packet sent completed */
509 db->tx_packet_cnt--;
510
511 if (tdes0 != 0x7fffffff) {
512 #ifdef TX_DEBUG
513 printf("%s()tdes0=%x\n", __FUNCTION__, tdes0);
514 #endif
515 if (tdes0 & TDES0_ERR_MASK) {
516 if (tdes0 & 0x0002) { /* UnderRun */
517 if (!(db->cr6_data & CR6_SFT)) {
518 db->cr6_data = db->cr6_data |
519 CR6_SFT;
520 update_cr6(db->cr6_data,
521 db->ioaddr);
522 }
523 }
524 }
525 }
526
527 txptr = txptr->next_tx_desc;
528 }/* End of while */
529
530 /* Update TX remove pointer to next */
531 db->tx_remove_ptr = txptr;
532 }
533
534
535 /*
536 * Receive the come packet and pass to upper layer
537 */
538
uli526x_rx_packet(struct eth_device * dev)539 static int uli526x_rx_packet(struct eth_device *dev)
540 {
541 struct uli526x_board_info *db = dev->priv;
542 struct rx_desc *rxptr;
543 int rxlen = 0;
544 u32 rdes0;
545
546 rxptr = db->rx_ready_ptr;
547
548 rdes0 = le32_to_cpu(rxptr->rdes0);
549 #ifdef RX_DEBUG
550 printf("%s(): rxptr->rdes0=%x\n", __FUNCTION__, rxptr->rdes0);
551 #endif
552 if (!(rdes0 & 0x80000000)) { /* packet owner check */
553 if ((rdes0 & 0x300) != 0x300) {
554 /* A packet without First/Last flag */
555 /* reuse this buf */
556 printf("A packet without First/Last flag");
557 uli526x_reuse_buf(rxptr);
558 } else {
559 /* A packet with First/Last flag */
560 rxlen = ((rdes0 >> 16) & 0x3fff) - 4;
561 #ifdef RX_DEBUG
562 printf("%s(): rxlen =%x\n", __FUNCTION__, rxlen);
563 #endif
564 /* error summary bit check */
565 if (rdes0 & 0x8000) {
566 /* This is a error packet */
567 printf("Error: rdes0: %x\n", rdes0);
568 }
569
570 if (!(rdes0 & 0x8000) ||
571 ((db->cr6_data & CR6_PM) && (rxlen > 6))) {
572
573 #ifdef RX_DEBUG
574 printf("%s(): rx_skb_ptr =%x\n",
575 __FUNCTION__, rxptr->rx_buf_ptr);
576 printf("%s(): rxlen =%x\n",
577 __FUNCTION__, rxlen);
578
579 printf("%s(): buf addr =%x\n",
580 __FUNCTION__, rxptr->rx_buf_ptr);
581 printf("%s(): rxlen =%x\n",
582 __FUNCTION__, rxlen);
583 int i;
584 for (i = 0; i < 0x20; i++)
585 printf("%s(): data[%x] =%x\n",
586 __FUNCTION__, i, rxptr->rx_buf_ptr[i]);
587 #endif
588
589 net_process_received_packet(
590 (uchar *)rxptr->rx_buf_ptr, rxlen);
591 uli526x_reuse_buf(rxptr);
592
593 } else {
594 /* Reuse SKB buffer when the packet is error */
595 printf("Reuse buffer, rdes0");
596 uli526x_reuse_buf(rxptr);
597 }
598 }
599
600 rxptr = rxptr->next_rx_desc;
601 }
602
603 db->rx_ready_ptr = rxptr;
604 return rxlen;
605 }
606
607 /*
608 * Reuse the RX buffer
609 */
610
uli526x_reuse_buf(struct rx_desc * rxptr)611 static void uli526x_reuse_buf(struct rx_desc *rxptr)
612 {
613
614 if (!(rxptr->rdes0 & cpu_to_le32(0x80000000)))
615 rxptr->rdes0 = cpu_to_le32(0x80000000);
616 else
617 printf("Buffer reuse method error");
618 }
619 /*
620 * Initialize transmit/Receive descriptor
621 * Using Chain structure, and allocate Tx/Rx buffer
622 */
623
uli526x_descriptor_init(struct uli526x_board_info * db,unsigned long ioaddr)624 static void uli526x_descriptor_init(struct uli526x_board_info *db,
625 unsigned long ioaddr)
626 {
627 struct tx_desc *tmp_tx;
628 struct rx_desc *tmp_rx;
629 unsigned char *tmp_buf;
630 dma_addr_t tmp_tx_dma, tmp_rx_dma;
631 dma_addr_t tmp_buf_dma;
632 int i;
633 /* tx descriptor start pointer */
634 db->tx_insert_ptr = db->first_tx_desc;
635 db->tx_remove_ptr = db->first_tx_desc;
636
637 outl(db->first_tx_desc_dma, ioaddr + DCR4); /* TX DESC address */
638
639 /* rx descriptor start pointer */
640 db->first_rx_desc = (void *)db->first_tx_desc +
641 sizeof(struct tx_desc) * TX_DESC_CNT;
642 db->first_rx_desc_dma = db->first_tx_desc_dma +
643 sizeof(struct tx_desc) * TX_DESC_CNT;
644 db->rx_ready_ptr = db->first_rx_desc;
645 outl(db->first_rx_desc_dma, ioaddr + DCR3); /* RX DESC address */
646 #ifdef DEBUG
647 printf("%s(): db->first_tx_desc= 0x%x\n",
648 __FUNCTION__, db->first_tx_desc);
649 printf("%s(): db->first_rx_desc_dma= 0x%x\n",
650 __FUNCTION__, db->first_rx_desc_dma);
651 #endif
652 /* Init Transmit chain */
653 tmp_buf = db->buf_pool_start;
654 tmp_buf_dma = db->buf_pool_dma_start;
655 tmp_tx_dma = db->first_tx_desc_dma;
656 for (tmp_tx = db->first_tx_desc, i = 0;
657 i < TX_DESC_CNT; i++, tmp_tx++) {
658 tmp_tx->tx_buf_ptr = (char *)tmp_buf;
659 tmp_tx->tdes0 = cpu_to_le32(0);
660 tmp_tx->tdes1 = cpu_to_le32(0x81000000); /* IC, chain */
661 tmp_tx->tdes2 = cpu_to_le32(tmp_buf_dma);
662 tmp_tx_dma += sizeof(struct tx_desc);
663 tmp_tx->tdes3 = cpu_to_le32(tmp_tx_dma);
664 tmp_tx->next_tx_desc = tmp_tx + 1;
665 tmp_buf = tmp_buf + TX_BUF_ALLOC;
666 tmp_buf_dma = tmp_buf_dma + TX_BUF_ALLOC;
667 }
668 (--tmp_tx)->tdes3 = cpu_to_le32(db->first_tx_desc_dma);
669 tmp_tx->next_tx_desc = db->first_tx_desc;
670
671 /* Init Receive descriptor chain */
672 tmp_rx_dma = db->first_rx_desc_dma;
673 for (tmp_rx = db->first_rx_desc, i = 0; i < RX_DESC_CNT;
674 i++, tmp_rx++) {
675 tmp_rx->rdes0 = cpu_to_le32(0);
676 tmp_rx->rdes1 = cpu_to_le32(0x01000600);
677 tmp_rx_dma += sizeof(struct rx_desc);
678 tmp_rx->rdes3 = cpu_to_le32(tmp_rx_dma);
679 tmp_rx->next_rx_desc = tmp_rx + 1;
680 }
681 (--tmp_rx)->rdes3 = cpu_to_le32(db->first_rx_desc_dma);
682 tmp_rx->next_rx_desc = db->first_rx_desc;
683
684 /* pre-allocate Rx buffer */
685 allocate_rx_buffer(db);
686 }
687
688 /*
689 * Update CR6 value
690 * Firstly stop ULI526X, then written value and start
691 */
692
update_cr6(u32 cr6_data,unsigned long ioaddr)693 static void update_cr6(u32 cr6_data, unsigned long ioaddr)
694 {
695
696 outl(cr6_data, ioaddr + DCR6);
697 udelay(5);
698 }
699
700 /*
701 * Allocate rx buffer,
702 */
703
allocate_rx_buffer(struct uli526x_board_info * db)704 static void allocate_rx_buffer(struct uli526x_board_info *db)
705 {
706 int index;
707 struct rx_desc *rxptr;
708 rxptr = db->first_rx_desc;
709 u32 addr;
710
711 for (index = 0; index < RX_DESC_CNT; index++) {
712 addr = (u32)net_rx_packets[index];
713 addr += (16 - (addr & 15));
714 rxptr->rx_buf_ptr = (char *) addr;
715 rxptr->rdes2 = cpu_to_le32(addr);
716 rxptr->rdes0 = cpu_to_le32(0x80000000);
717 #ifdef DEBUG
718 printf("%s(): Number 0x%x:\n", __FUNCTION__, index);
719 printf("%s(): addr 0x%x:\n", __FUNCTION__, addr);
720 printf("%s(): rxptr address = 0x%x\n", __FUNCTION__, rxptr);
721 printf("%s(): rxptr buf address = 0x%x\n", \
722 __FUNCTION__, rxptr->rx_buf_ptr);
723 printf("%s(): rdes2 = 0x%x\n", __FUNCTION__, rxptr->rdes2);
724 #endif
725 rxptr = rxptr->next_rx_desc;
726 }
727 }
728
729 /*
730 * Read one word data from the serial ROM
731 */
732
read_srom_word(long ioaddr,int offset)733 static u16 read_srom_word(long ioaddr, int offset)
734 {
735 int i;
736 u16 srom_data = 0;
737 long cr9_ioaddr = ioaddr + DCR9;
738
739 outl(CR9_SROM_READ, cr9_ioaddr);
740 outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr);
741
742 /* Send the Read Command 110b */
743 SROM_CLK_WRITE(SROM_DATA_1, cr9_ioaddr);
744 SROM_CLK_WRITE(SROM_DATA_1, cr9_ioaddr);
745 SROM_CLK_WRITE(SROM_DATA_0, cr9_ioaddr);
746
747 /* Send the offset */
748 for (i = 5; i >= 0; i--) {
749 srom_data = (offset & (1 << i)) ? SROM_DATA_1 : SROM_DATA_0;
750 SROM_CLK_WRITE(srom_data, cr9_ioaddr);
751 }
752
753 outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr);
754
755 for (i = 16; i > 0; i--) {
756 outl(CR9_SROM_READ | CR9_SRCS | CR9_SRCLK, cr9_ioaddr);
757 udelay(5);
758 srom_data = (srom_data << 1) | ((inl(cr9_ioaddr) & CR9_CRDOUT)
759 ? 1 : 0);
760 outl(CR9_SROM_READ | CR9_SRCS, cr9_ioaddr);
761 udelay(5);
762 }
763
764 outl(CR9_SROM_READ, cr9_ioaddr);
765 return srom_data;
766 }
767
768 /*
769 * Set 10/100 phyxcer capability
770 * AUTO mode : phyxcer register4 is NIC capability
771 * Force mode: phyxcer register4 is the force media
772 */
773
uli526x_set_phyxcer(struct uli526x_board_info * db)774 static void uli526x_set_phyxcer(struct uli526x_board_info *db)
775 {
776 u16 phy_reg;
777
778 /* Phyxcer capability setting */
779 phy_reg = uli_phy_read(db->ioaddr,
780 db->phy_addr, 4, db->chip_id) & ~0x01e0;
781
782 if (db->media_mode & ULI526X_AUTO) {
783 /* AUTO Mode */
784 phy_reg |= db->PHY_reg4;
785 } else {
786 /* Force Mode */
787 switch (db->media_mode) {
788 case ULI526X_10MHF: phy_reg |= 0x20; break;
789 case ULI526X_10MFD: phy_reg |= 0x40; break;
790 case ULI526X_100MHF: phy_reg |= 0x80; break;
791 case ULI526X_100MFD: phy_reg |= 0x100; break;
792 }
793
794 }
795
796 /* Write new capability to Phyxcer Reg4 */
797 if (!(phy_reg & 0x01e0)) {
798 phy_reg |= db->PHY_reg4;
799 db->media_mode |= ULI526X_AUTO;
800 }
801 uli_phy_write(db->ioaddr, db->phy_addr, 4, phy_reg, db->chip_id);
802
803 /* Restart Auto-Negotiation */
804 uli_phy_write(db->ioaddr, db->phy_addr, 0, 0x1200, db->chip_id);
805 udelay(50);
806 }
807
808 /*
809 * Write a word to Phy register
810 */
811
uli_phy_write(unsigned long iobase,u8 phy_addr,u8 offset,u16 phy_data,u32 chip_id)812 static void uli_phy_write(unsigned long iobase, u8 phy_addr, u8 offset,
813 u16 phy_data, u32 chip_id)
814 {
815 u16 i;
816 unsigned long ioaddr;
817
818 if (chip_id == PCI_ULI5263_ID) {
819 phy_writeby_cr10(iobase, phy_addr, offset, phy_data);
820 return;
821 }
822 /* M5261/M5263 Chip */
823 ioaddr = iobase + DCR9;
824
825 /* Send 33 synchronization clock to Phy controller */
826 for (i = 0; i < 35; i++)
827 phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
828
829 /* Send start command(01) to Phy */
830 phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
831 phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
832
833 /* Send write command(01) to Phy */
834 phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
835 phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
836
837 /* Send Phy address */
838 for (i = 0x10; i > 0; i = i >> 1)
839 phy_write_1bit(ioaddr, phy_addr & i ?
840 PHY_DATA_1 : PHY_DATA_0, chip_id);
841
842 /* Send register address */
843 for (i = 0x10; i > 0; i = i >> 1)
844 phy_write_1bit(ioaddr, offset & i ?
845 PHY_DATA_1 : PHY_DATA_0, chip_id);
846
847 /* written trasnition */
848 phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
849 phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
850
851 /* Write a word data to PHY controller */
852 for (i = 0x8000; i > 0; i >>= 1)
853 phy_write_1bit(ioaddr, phy_data & i ?
854 PHY_DATA_1 : PHY_DATA_0, chip_id);
855 }
856
857 /*
858 * Read a word data from phy register
859 */
860
uli_phy_read(unsigned long iobase,u8 phy_addr,u8 offset,u32 chip_id)861 static u16 uli_phy_read(unsigned long iobase, u8 phy_addr, u8 offset,
862 u32 chip_id)
863 {
864 int i;
865 u16 phy_data;
866 unsigned long ioaddr;
867
868 if (chip_id == PCI_ULI5263_ID)
869 return phy_readby_cr10(iobase, phy_addr, offset);
870 /* M5261/M5263 Chip */
871 ioaddr = iobase + DCR9;
872
873 /* Send 33 synchronization clock to Phy controller */
874 for (i = 0; i < 35; i++)
875 phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
876
877 /* Send start command(01) to Phy */
878 phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
879 phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
880
881 /* Send read command(10) to Phy */
882 phy_write_1bit(ioaddr, PHY_DATA_1, chip_id);
883 phy_write_1bit(ioaddr, PHY_DATA_0, chip_id);
884
885 /* Send Phy address */
886 for (i = 0x10; i > 0; i = i >> 1)
887 phy_write_1bit(ioaddr, phy_addr & i ?
888 PHY_DATA_1 : PHY_DATA_0, chip_id);
889
890 /* Send register address */
891 for (i = 0x10; i > 0; i = i >> 1)
892 phy_write_1bit(ioaddr, offset & i ?
893 PHY_DATA_1 : PHY_DATA_0, chip_id);
894
895 /* Skip transition state */
896 phy_read_1bit(ioaddr, chip_id);
897
898 /* read 16bit data */
899 for (phy_data = 0, i = 0; i < 16; i++) {
900 phy_data <<= 1;
901 phy_data |= phy_read_1bit(ioaddr, chip_id);
902 }
903
904 return phy_data;
905 }
906
phy_readby_cr10(unsigned long iobase,u8 phy_addr,u8 offset)907 static u16 phy_readby_cr10(unsigned long iobase, u8 phy_addr, u8 offset)
908 {
909 unsigned long ioaddr, cr10_value;
910
911 ioaddr = iobase + DCR10;
912 cr10_value = phy_addr;
913 cr10_value = (cr10_value<<5) + offset;
914 cr10_value = (cr10_value<<16) + 0x08000000;
915 outl(cr10_value, ioaddr);
916 udelay(1);
917 while (1) {
918 cr10_value = inl(ioaddr);
919 if (cr10_value & 0x10000000)
920 break;
921 }
922 return (cr10_value&0x0ffff);
923 }
924
phy_writeby_cr10(unsigned long iobase,u8 phy_addr,u8 offset,u16 phy_data)925 static void phy_writeby_cr10(unsigned long iobase, u8 phy_addr,
926 u8 offset, u16 phy_data)
927 {
928 unsigned long ioaddr, cr10_value;
929
930 ioaddr = iobase + DCR10;
931 cr10_value = phy_addr;
932 cr10_value = (cr10_value<<5) + offset;
933 cr10_value = (cr10_value<<16) + 0x04000000 + phy_data;
934 outl(cr10_value, ioaddr);
935 udelay(1);
936 }
937 /*
938 * Write one bit data to Phy Controller
939 */
940
phy_write_1bit(unsigned long ioaddr,u32 phy_data,u32 chip_id)941 static void phy_write_1bit(unsigned long ioaddr, u32 phy_data, u32 chip_id)
942 {
943 outl(phy_data , ioaddr); /* MII Clock Low */
944 udelay(1);
945 outl(phy_data | MDCLKH, ioaddr); /* MII Clock High */
946 udelay(1);
947 outl(phy_data , ioaddr); /* MII Clock Low */
948 udelay(1);
949 }
950
951 /*
952 * Read one bit phy data from PHY controller
953 */
954
phy_read_1bit(unsigned long ioaddr,u32 chip_id)955 static u16 phy_read_1bit(unsigned long ioaddr, u32 chip_id)
956 {
957 u16 phy_data;
958
959 outl(0x50000 , ioaddr);
960 udelay(1);
961 phy_data = (inl(ioaddr) >> 19) & 0x1;
962 outl(0x40000 , ioaddr);
963 udelay(1);
964
965 return phy_data;
966 }
967
968 /*
969 * Set MAC address to ID Table
970 */
971
set_mac_addr(struct eth_device * dev)972 static void set_mac_addr(struct eth_device *dev)
973 {
974 int i;
975 u16 addr;
976 struct uli526x_board_info *db = dev->priv;
977 outl(0x10000, db->ioaddr + DCR0); /* Diagnosis mode */
978 /* Reset dianostic pointer port */
979 outl(0x1c0, db->ioaddr + DCR13);
980 outl(0, db->ioaddr + DCR14); /* Clear reset port */
981 outl(0x10, db->ioaddr + DCR14); /* Reset ID Table pointer */
982 outl(0, db->ioaddr + DCR14); /* Clear reset port */
983 outl(0, db->ioaddr + DCR13); /* Clear CR13 */
984 /* Select ID Table access port */
985 outl(0x1b0, db->ioaddr + DCR13);
986 /* Read MAC address from CR14 */
987 for (i = 0; i < 3; i++) {
988 addr = dev->enetaddr[2 * i] | (dev->enetaddr[2 * i + 1] << 8);
989 outl(addr, db->ioaddr + DCR14);
990 }
991 /* write end */
992 outl(0, db->ioaddr + DCR13); /* Clear CR13 */
993 outl(0, db->ioaddr + DCR0); /* Clear CR0 */
994 udelay(10);
995 return;
996 }
997