1 /*
2 * (C) Copyright 2000-2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 * (C) Copyright 2002
5 * Daniel Engstr�m, Omicron Ceti AB
6 *
7 * See file CREDITS for list of people who contributed to this
8 * project.
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation; either version 2 of
13 * the License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
23 * MA 02111-1307 USA
24 *
25 ********************************************************************
26 *
27 * Lots of code copied from:
28 *
29 * m8xx_pcmcia.c - Linux PCMCIA socket driver for the mpc8xx series.
30 * (C) 1999-2000 Magnus Damm <damm@bitsmart.com>
31 *
32 * "The ExCA standard specifies that socket controllers should provide
33 * two IO and five memory windows per socket, which can be independently
34 * configured and positioned in the host address space and mapped to
35 * arbitrary segments of card address space. " - David A Hinds. 1999
36 *
37 * This controller does _not_ meet the ExCA standard.
38 *
39 * m8xx pcmcia controller brief info:
40 * + 8 windows (attrib, mem, i/o)
41 * + up to two slots (SLOT_A and SLOT_B)
42 * + inputpins, outputpins, event and mask registers.
43 * - no offset register. sigh.
44 *
45 * Because of the lacking offset register we must map the whole card.
46 * We assign each memory window PCMCIA_MEM_WIN_SIZE address space.
47 * Make sure there is (PCMCIA_MEM_WIN_SIZE * PCMCIA_MEM_WIN_NO
48 * * PCMCIA_SOCKETS_NO) bytes at PCMCIA_MEM_WIN_BASE.
49 * The i/o windows are dynamically allocated at PCMCIA_IO_WIN_BASE.
50 * They are maximum 64KByte each...
51 */
52
53
54 #undef DEBUG /**/
55
56 /*
57 * PCMCIA support
58 */
59 #include <common.h>
60 #include <command.h>
61 #include <config.h>
62 #include <pci.h>
63 #include <asm/io.h>
64
65 #include <pcmcia.h>
66
67 #if defined(CONFIG_CMD_PCMCIA)
68
69 int pcmcia_on(int ide_base_bus);
70
71 static int hardware_disable(int slot);
72 static int hardware_enable(int slot);
73 static int voltage_set(int slot, int vcc, int vpp);
74 static void print_funcid(int func);
75 static void print_fixed(volatile char *p);
76 static int identify(volatile char *p);
77 static int check_ide_device(int slot, int ide_base_bus);
78
79
80 /* ------------------------------------------------------------------------- */
81
82
83 const char *indent = "\t ";
84
85 /* ------------------------------------------------------------------------- */
86
87
88 static struct pci_device_id supported[] = {
89 { PCI_VENDOR_ID_TI, 0xac50 }, /* Ti PCI1410A */
90 { PCI_VENDOR_ID_TI, 0xac56 }, /* Ti PCI1510 */
91 { }
92 };
93
94 static pci_dev_t devbusfn;
95 static u32 socket_base;
96 static u32 pcmcia_cis_ptr;
97
pcmcia_on(int ide_base_bus)98 int pcmcia_on(int ide_base_bus)
99 {
100 u16 dev_id;
101 u32 socket_status;
102 int slot = 0;
103 int cis_len;
104 u16 io_base;
105 u16 io_len;
106
107 /*
108 * Find the CardBus PCI device(s).
109 */
110 if ((devbusfn = pci_find_devices(supported, 0)) < 0) {
111 printf("Ti CardBus: not found\n");
112 return 1;
113 }
114
115 pci_read_config_word(devbusfn, PCI_DEVICE_ID, &dev_id);
116
117 if (dev_id == 0xac56) {
118 debug("Enable PCMCIA Ti PCI1510\n");
119 } else {
120 debug("Enable PCMCIA Ti PCI1410A\n");
121 }
122
123 pcmcia_cis_ptr = CONFIG_SYS_PCMCIA_CIS_WIN;
124 cis_len = CONFIG_SYS_PCMCIA_CIS_WIN_SIZE;
125
126 io_base = CONFIG_SYS_PCMCIA_IO_WIN;
127 io_len = CONFIG_SYS_PCMCIA_IO_WIN_SIZE;
128
129 /*
130 * Setup the PCI device.
131 */
132 pci_read_config_dword(devbusfn, PCI_BASE_ADDRESS_0, &socket_base);
133 socket_base &= ~0xf;
134
135 socket_status = readl(socket_base+8);
136 if ((socket_status & 6) == 0) {
137 printf("Card Present: ");
138
139 switch (socket_status & 0x3c00) {
140
141 case 0x400:
142 printf("5V ");
143 break;
144 case 0x800:
145 printf("3.3V ");
146 break;
147 case 0xc00:
148 printf("3.3/5V ");
149 break;
150 default:
151 printf("unsupported Vcc ");
152 break;
153 }
154 switch (socket_status & 0x30) {
155 case 0x10:
156 printf("16bit PC-Card\n");
157 break;
158 case 0x20:
159 printf("32bit CardBus Card\n");
160 break;
161 default:
162 printf("8bit PC-Card\n");
163 break;
164 }
165 }
166
167
168 writeb(0x41, socket_base + 0x806); /* Enable I/O window 0 and memory window 0 */
169 writeb(0x0e, socket_base + 0x807); /* Reset I/O window options */
170
171 /* Careful: the linux yenta driver do not seem to reset the offset
172 * in the i/o windows, so leaving them non-zero is a problem */
173
174 writeb(io_base & 0xff, socket_base + 0x808); /* I/O window 0 base address */
175 writeb(io_base>>8, socket_base + 0x809);
176 writeb((io_base + io_len - 1) & 0xff, socket_base + 0x80a); /* I/O window 0 end address */
177 writeb((io_base + io_len - 1)>>8, socket_base + 0x80b);
178 writeb(0x00, socket_base + 0x836); /* I/O window 0 offset address 0x000 */
179 writeb(0x00, socket_base + 0x837);
180
181
182 writeb((pcmcia_cis_ptr&0x000ff000) >> 12,
183 socket_base + 0x810); /* Memory window 0 start address bits 19-12 */
184 writeb((pcmcia_cis_ptr&0x00f00000) >> 20,
185 socket_base + 0x811); /* Memory window 0 start address bits 23-20 */
186 writeb(((pcmcia_cis_ptr+cis_len-1) & 0x000ff000) >> 12,
187 socket_base + 0x812); /* Memory window 0 end address bits 19-12*/
188 writeb(((pcmcia_cis_ptr+cis_len-1) & 0x00f00000) >> 20,
189 socket_base + 0x813); /* Memory window 0 end address bits 23-20*/
190 writeb(0x00, socket_base + 0x814); /* Memory window 0 offset bits 19-12 */
191 writeb(0x40, socket_base + 0x815); /* Memory window 0 offset bits 23-20 and
192 * options (read/write, attribute access) */
193 writeb(0x00, socket_base + 0x816); /* ExCA card-detect and general control */
194 writeb(0x00, socket_base + 0x81e); /* ExCA global control (interrupt modes) */
195
196 writeb((pcmcia_cis_ptr & 0xff000000) >> 24,
197 socket_base + 0x840); /* Memory window address bits 31-24 */
198
199
200 /* turn off voltage */
201 if (voltage_set(slot, 0, 0)) {
202 return 1;
203 }
204
205 /* Enable external hardware */
206 if (hardware_enable(slot)) {
207 return 1;
208 }
209
210 if (check_ide_device(slot, ide_base_bus)) {
211 return 1;
212 }
213
214 return 0;
215 }
216
217 /* ------------------------------------------------------------------------- */
218
219
220 #if defined(CONFIG_CMD_PCMCIA)
pcmcia_off(void)221 int pcmcia_off (void)
222 {
223 int slot = 0;
224
225 writeb(0x00, socket_base + 0x806); /* disable all I/O and memory windows */
226
227 writeb(0x00, socket_base + 0x808); /* I/O window 0 base address */
228 writeb(0x00, socket_base + 0x809);
229 writeb(0x00, socket_base + 0x80a); /* I/O window 0 end address */
230 writeb(0x00, socket_base + 0x80b);
231 writeb(0x00, socket_base + 0x836); /* I/O window 0 offset address */
232 writeb(0x00, socket_base + 0x837);
233
234 writeb(0x00, socket_base + 0x80c); /* I/O window 1 base address */
235 writeb(0x00, socket_base + 0x80d);
236 writeb(0x00, socket_base + 0x80e); /* I/O window 1 end address */
237 writeb(0x00, socket_base + 0x80f);
238 writeb(0x00, socket_base + 0x838); /* I/O window 1 offset address */
239 writeb(0x00, socket_base + 0x839);
240
241 writeb(0x00, socket_base + 0x810); /* Memory window 0 start address */
242 writeb(0x00, socket_base + 0x811);
243 writeb(0x00, socket_base + 0x812); /* Memory window 0 end address */
244 writeb(0x00, socket_base + 0x813);
245 writeb(0x00, socket_base + 0x814); /* Memory window 0 offset */
246 writeb(0x00, socket_base + 0x815);
247
248 writeb(0xc0, socket_base + 0x840); /* Memory window 0 page address */
249
250
251 /* turn off voltage */
252 voltage_set(slot, 0, 0);
253
254 /* disable external hardware */
255 printf ("Shutdown and Poweroff Ti PCI1410A\n");
256 hardware_disable(slot);
257
258 return 0;
259 }
260
261 #endif
262
263 /* ------------------------------------------------------------------------- */
264
265
266 #define MAX_TUPEL_SZ 512
267 #define MAX_FEATURES 4
268 int ide_devices_found;
check_ide_device(int slot,int ide_base_bus)269 static int check_ide_device(int slot, int ide_base_bus)
270 {
271 volatile char *ident = NULL;
272 volatile char *feature_p[MAX_FEATURES];
273 volatile char *p, *start;
274 int n_features = 0;
275 uchar func_id = ~0;
276 uchar code, len;
277 ushort config_base = 0;
278 int found = 0;
279 int i;
280 u32 socket_status;
281
282 debug ("PCMCIA MEM: %08X\n", pcmcia_cis_ptr);
283
284 socket_status = readl(socket_base+8);
285
286 if ((socket_status & 6) != 0 || (socket_status & 0x20) != 0) {
287 printf("no card or CardBus card\n");
288 return 1;
289 }
290
291 start = p = (volatile char *) pcmcia_cis_ptr;
292
293 while ((p - start) < MAX_TUPEL_SZ) {
294
295 code = *p; p += 2;
296
297 if (code == 0xFF) { /* End of chain */
298 break;
299 }
300
301 len = *p; p += 2;
302 #if defined(DEBUG) && (DEBUG > 1)
303 {
304 volatile uchar *q = p;
305 printf ("\nTuple code %02x length %d\n\tData:",
306 code, len);
307
308 for (i = 0; i < len; ++i) {
309 printf (" %02x", *q);
310 q+= 2;
311 }
312 }
313 #endif /* DEBUG */
314 switch (code) {
315 case CISTPL_VERS_1:
316 ident = p + 4;
317 break;
318 case CISTPL_FUNCID:
319 /* Fix for broken SanDisk which may have 0x80 bit set */
320 func_id = *p & 0x7F;
321 break;
322 case CISTPL_FUNCE:
323 if (n_features < MAX_FEATURES)
324 feature_p[n_features++] = p;
325 break;
326 case CISTPL_CONFIG:
327 config_base = (*(p+6) << 8) + (*(p+4));
328 debug ("\n## Config_base = %04x ###\n", config_base);
329 default:
330 break;
331 }
332 p += 2 * len;
333 }
334
335 found = identify(ident);
336
337 if (func_id != ((uchar)~0)) {
338 print_funcid (func_id);
339
340 if (func_id == CISTPL_FUNCID_FIXED)
341 found = 1;
342 else
343 return 1; /* no disk drive */
344 }
345
346 for (i=0; i<n_features; ++i) {
347 print_fixed(feature_p[i]);
348 }
349
350 if (!found) {
351 printf("unknown card type\n");
352 return 1;
353 }
354
355 /* select config index 1 */
356 writeb(1, pcmcia_cis_ptr + config_base);
357
358 #if 0
359 printf("Confiuration Option Register: %02x\n", readb(pcmcia_cis_ptr + config_base));
360 printf("Card Confiuration and Status Register: %02x\n", readb(pcmcia_cis_ptr + config_base + 2));
361 printf("Pin Replacement Register Register: %02x\n", readb(pcmcia_cis_ptr + config_base + 4));
362 printf("Socket and Copy Register: %02x\n", readb(pcmcia_cis_ptr + config_base + 6));
363 #endif
364 ide_devices_found |= (1 << (slot+ide_base_bus));
365
366 return 0;
367 }
368
369
voltage_set(int slot,int vcc,int vpp)370 static int voltage_set(int slot, int vcc, int vpp)
371 {
372 u32 socket_control;
373 int reg=0;
374
375 switch (slot) {
376 case 0:
377 reg = socket_base + 0x10;
378 break;
379 default:
380 return 1;
381 }
382
383 socket_control = 0;
384
385
386 switch (vcc) {
387 case 50:
388 socket_control |= 0x20;
389 break;
390 case 33:
391 socket_control |= 0x30;
392 break;
393 case 0:
394 default: ;
395 }
396
397 switch (vpp) {
398 case 120:
399 socket_control |= 0x1;
400 break;
401 case 50:
402 socket_control |= 0x2;
403 break;
404 case 33:
405 socket_control |= 0x3;
406 break;
407 case 0:
408 default: ;
409 }
410
411 writel(socket_control, reg);
412
413 debug ("voltage_set: Ti PCI1410A Slot %d, Vcc=%d.%d, Vpp=%d.%d\n",
414 slot, vcc/10, vcc%10, vpp/10, vpp%10);
415
416 udelay(500);
417 return 0;
418 }
419
420
hardware_enable(int slot)421 static int hardware_enable(int slot)
422 {
423 u32 socket_status;
424 u16 brg_ctrl;
425 int is_82365sl;
426
427 socket_status = readl(socket_base+8);
428
429 if ((socket_status & 6) == 0) {
430
431 switch (socket_status & 0x3c00) {
432
433 case 0x400:
434 printf("5V ");
435 voltage_set(slot, 50, 0);
436 break;
437 case 0x800:
438 voltage_set(slot, 33, 0);
439 break;
440 case 0xc00:
441 voltage_set(slot, 33, 0);
442 break;
443 default:
444 voltage_set(slot, 0, 0);
445 break;
446 }
447 } else {
448 voltage_set(slot, 0, 0);
449 }
450
451 pci_read_config_word(devbusfn, PCI_BRIDGE_CONTROL, &brg_ctrl);
452 brg_ctrl &= ~PCI_BRIDGE_CTL_BUS_RESET;
453 pci_write_config_word(devbusfn, PCI_BRIDGE_CONTROL, brg_ctrl);
454 is_82365sl = ((readb(socket_base+0x800) & 0x0f) == 2);
455 writeb(is_82365sl?0x90:0x98, socket_base+0x802);
456 writeb(0x67, socket_base+0x803);
457 udelay(100000);
458 #if 0
459 printf("ExCA Id %02x, Card Status %02x, Power config %02x, Interrupt Config %02x, bridge control %04x %d\n",
460 readb(socket_base+0x800), readb(socket_base+0x801),
461 readb(socket_base+0x802), readb(socket_base+0x803), brg_ctrl, is_82365sl);
462 #endif
463
464 return ((readb(socket_base+0x801)&0x6c)==0x6c)?0:1;
465 }
466
467
hardware_disable(int slot)468 static int hardware_disable(int slot)
469 {
470 voltage_set(slot, 0, 0);
471 return 0;
472 }
473
print_funcid(int func)474 static void print_funcid(int func)
475 {
476 puts(indent);
477 switch (func) {
478 case CISTPL_FUNCID_MULTI:
479 puts(" Multi-Function");
480 break;
481 case CISTPL_FUNCID_MEMORY:
482 puts(" Memory");
483 break;
484 case CISTPL_FUNCID_SERIAL:
485 puts(" Serial Port");
486 break;
487 case CISTPL_FUNCID_PARALLEL:
488 puts(" Parallel Port");
489 break;
490 case CISTPL_FUNCID_FIXED:
491 puts(" Fixed Disk");
492 break;
493 case CISTPL_FUNCID_VIDEO:
494 puts(" Video Adapter");
495 break;
496 case CISTPL_FUNCID_NETWORK:
497 puts(" Network Adapter");
498 break;
499 case CISTPL_FUNCID_AIMS:
500 puts(" AIMS Card");
501 break;
502 case CISTPL_FUNCID_SCSI:
503 puts(" SCSI Adapter");
504 break;
505 default:
506 puts(" Unknown");
507 break;
508 }
509 puts(" Card\n");
510 }
511
512 /* ------------------------------------------------------------------------- */
513
print_fixed(volatile char * p)514 static void print_fixed(volatile char *p)
515 {
516 if (p == NULL)
517 return;
518
519 puts(indent);
520
521 switch (*p) {
522 case CISTPL_FUNCE_IDE_IFACE:
523 { uchar iface = *(p+2);
524
525 puts ((iface == CISTPL_IDE_INTERFACE) ? " IDE" : " unknown");
526 puts (" interface ");
527 break;
528 }
529 case CISTPL_FUNCE_IDE_MASTER:
530 case CISTPL_FUNCE_IDE_SLAVE:
531 {
532 uchar f1 = *(p+2);
533 uchar f2 = *(p+4);
534
535 puts((f1 & CISTPL_IDE_SILICON) ? " [silicon]" : " [rotating]");
536
537 if (f1 & CISTPL_IDE_UNIQUE) {
538 puts(" [unique]");
539 }
540
541 puts((f1 & CISTPL_IDE_DUAL) ? " [dual]" : " [single]");
542
543 if (f2 & CISTPL_IDE_HAS_SLEEP) {
544 puts(" [sleep]");
545 }
546
547 if (f2 & CISTPL_IDE_HAS_STANDBY) {
548 puts(" [standby]");
549 }
550
551 if (f2 & CISTPL_IDE_HAS_IDLE) {
552 puts(" [idle]");
553 }
554
555 if (f2 & CISTPL_IDE_LOW_POWER) {
556 puts(" [low power]");
557 }
558
559 if (f2 & CISTPL_IDE_REG_INHIBIT) {
560 puts(" [reg inhibit]");
561 }
562
563 if (f2 & CISTPL_IDE_HAS_INDEX) {
564 puts(" [index]");
565 }
566
567 if (f2 & CISTPL_IDE_IOIS16) {
568 puts(" [IOis16]");
569 }
570
571 break;
572 }
573 }
574 putc('\n');
575 }
576
577 /* ------------------------------------------------------------------------- */
578
579 #define MAX_IDENT_CHARS 64
580 #define MAX_IDENT_FIELDS 4
581
582 static char *known_cards[] = {
583 "ARGOSY PnPIDE D5",
584 NULL
585 };
586
identify(volatile char * p)587 static int identify(volatile char *p)
588 {
589 char id_str[MAX_IDENT_CHARS];
590 char data;
591 char *t;
592 char **card;
593 int i, done;
594
595 if (p == NULL)
596 return (0); /* Don't know */
597
598 t = id_str;
599 done =0;
600
601 for (i=0; i<=4 && !done; ++i, p+=2) {
602 while ((data = *p) != '\0') {
603 if (data == 0xFF) {
604 done = 1;
605 break;
606 }
607 *t++ = data;
608 if (t == &id_str[MAX_IDENT_CHARS-1]) {
609 done = 1;
610 break;
611 }
612 p += 2;
613 }
614 if (!done)
615 *t++ = ' ';
616 }
617 *t = '\0';
618 while (--t > id_str) {
619 if (*t == ' ') {
620 *t = '\0';
621 } else {
622 break;
623 }
624 }
625 puts(id_str);
626 putc('\n');
627
628 for (card=known_cards; *card; ++card) {
629 debug ("## Compare against \"%s\"\n", *card);
630 if (strcmp(*card, id_str) == 0) { /* found! */
631 debug ("## CARD FOUND ##\n");
632 return 1;
633 }
634 }
635
636 return 0; /* don't know */
637 }
638
639 #endif /* CONFIG_CMD_PCMCIA */
640