2 * (C) Copyright 2000-2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Daniel Engström, Omicron Ceti AB
7 * See file CREDITS for list of people who contributed to this
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.
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.
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,
25 ********************************************************************
27 * Lots of code copied from:
29 * m8xx_pcmcia.c - Linux PCMCIA socket driver for the mpc8xx series.
30 * (C) 1999-2000 Magnus Damm <damm@bitsmart.com>
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
37 * This controller does _not_ meet the ExCA standard.
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.
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...
67 #if defined(CONFIG_CMD_PCMCIA)
69 int pcmcia_on(int ide_base_bus);
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);
80 /* ------------------------------------------------------------------------- */
83 const char *indent = "\t ";
85 /* ------------------------------------------------------------------------- */
88 static struct pci_device_id supported[] = {
89 { PCI_VENDOR_ID_TI, 0xac50 }, /* Ti PCI1410A */
90 { PCI_VENDOR_ID_TI, 0xac56 }, /* Ti PCI1510 */
94 static pci_dev_t devbusfn;
95 static u32 socket_base;
96 static u32 pcmcia_cis_ptr;
98 int pcmcia_on(int ide_base_bus)
108 * Find the CardBus PCI device(s).
110 if ((devbusfn = pci_find_devices(supported, 0)) < 0) {
111 printf("Ti CardBus: not found\n");
115 pci_read_config_word(devbusfn, PCI_DEVICE_ID, &dev_id);
117 if (dev_id == 0xac56) {
118 debug("Enable PCMCIA Ti PCI1510\n");
120 debug("Enable PCMCIA Ti PCI1410A\n");
123 pcmcia_cis_ptr = CONFIG_SYS_PCMCIA_CIS_WIN;
124 cis_len = CONFIG_SYS_PCMCIA_CIS_WIN_SIZE;
126 io_base = CONFIG_SYS_PCMCIA_IO_WIN;
127 io_len = CONFIG_SYS_PCMCIA_IO_WIN_SIZE;
130 * Setup the PCI device.
132 pci_read_config_dword(devbusfn, PCI_BASE_ADDRESS_0, &socket_base);
135 socket_status = readl(socket_base+8);
136 if ((socket_status & 6) == 0) {
137 printf("Card Present: ");
139 switch (socket_status & 0x3c00) {
151 printf("unsupported Vcc ");
154 switch (socket_status & 0x30) {
156 printf("16bit PC-Card\n");
159 printf("32bit CardBus Card\n");
162 printf("8bit PC-Card\n");
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 */
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 */
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);
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) */
196 writeb((pcmcia_cis_ptr & 0xff000000) >> 24,
197 socket_base + 0x840); /* Memory window address bits 31-24 */
200 /* turn off voltage */
201 if (voltage_set(slot, 0, 0)) {
205 /* Enable external hardware */
206 if (hardware_enable(slot)) {
210 if (check_ide_device(slot, ide_base_bus)) {
217 /* ------------------------------------------------------------------------- */
220 #if defined(CONFIG_CMD_PCMCIA)
221 int pcmcia_off (void)
225 writeb(0x00, socket_base + 0x806); /* disable all I/O and memory windows */
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);
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);
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);
248 writeb(0xc0, socket_base + 0x840); /* Memory window 0 page address */
251 /* turn off voltage */
252 voltage_set(slot, 0, 0);
254 /* disable external hardware */
255 printf ("Shutdown and Poweroff Ti PCI1410A\n");
256 hardware_disable(slot);
263 /* ------------------------------------------------------------------------- */
266 #define MAX_TUPEL_SZ 512
267 #define MAX_FEATURES 4
268 int ide_devices_found;
269 static int check_ide_device(int slot, int ide_base_bus)
271 volatile char *ident = NULL;
272 volatile char *feature_p[MAX_FEATURES];
273 volatile char *p, *start;
277 ushort config_base = 0;
282 debug ("PCMCIA MEM: %08X\n", pcmcia_cis_ptr);
284 socket_status = readl(socket_base+8);
286 if ((socket_status & 6) != 0 || (socket_status & 0x20) != 0) {
287 printf("no card or CardBus card\n");
291 start = p = (volatile char *) pcmcia_cis_ptr;
293 while ((p - start) < MAX_TUPEL_SZ) {
297 if (code == 0xFF) { /* End of chain */
302 #if defined(DEBUG) && (DEBUG > 1)
304 volatile uchar *q = p;
305 printf ("\nTuple code %02x length %d\n\tData:",
308 for (i = 0; i < len; ++i) {
309 printf (" %02x", *q);
319 /* Fix for broken SanDisk which may have 0x80 bit set */
323 if (n_features < MAX_FEATURES)
324 feature_p[n_features++] = p;
327 config_base = (*(p+6) << 8) + (*(p+4));
328 debug ("\n## Config_base = %04x ###\n", config_base);
335 found = identify(ident);
337 if (func_id != ((uchar)~0)) {
338 print_funcid (func_id);
340 if (func_id == CISTPL_FUNCID_FIXED)
343 return 1; /* no disk drive */
346 for (i=0; i<n_features; ++i) {
347 print_fixed(feature_p[i]);
351 printf("unknown card type\n");
355 /* select config index 1 */
356 writeb(1, pcmcia_cis_ptr + config_base);
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));
364 ide_devices_found |= (1 << (slot+ide_base_bus));
370 static int voltage_set(int slot, int vcc, int vpp)
377 reg = socket_base + 0x10;
388 socket_control |= 0x20;
391 socket_control |= 0x30;
399 socket_control |= 0x1;
402 socket_control |= 0x2;
405 socket_control |= 0x3;
411 writel(socket_control, reg);
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);
421 static int hardware_enable(int slot)
427 socket_status = readl(socket_base+8);
429 if ((socket_status & 6) == 0) {
431 switch (socket_status & 0x3c00) {
435 voltage_set(slot, 50, 0);
438 voltage_set(slot, 33, 0);
441 voltage_set(slot, 33, 0);
444 voltage_set(slot, 0, 0);
448 voltage_set(slot, 0, 0);
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);
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);
464 return ((readb(socket_base+0x801)&0x6c)==0x6c)?0:1;
468 static int hardware_disable(int slot)
470 voltage_set(slot, 0, 0);
474 static void print_funcid(int func)
478 case CISTPL_FUNCID_MULTI:
479 puts(" Multi-Function");
481 case CISTPL_FUNCID_MEMORY:
484 case CISTPL_FUNCID_SERIAL:
485 puts(" Serial Port");
487 case CISTPL_FUNCID_PARALLEL:
488 puts(" Parallel Port");
490 case CISTPL_FUNCID_FIXED:
493 case CISTPL_FUNCID_VIDEO:
494 puts(" Video Adapter");
496 case CISTPL_FUNCID_NETWORK:
497 puts(" Network Adapter");
499 case CISTPL_FUNCID_AIMS:
502 case CISTPL_FUNCID_SCSI:
503 puts(" SCSI Adapter");
512 /* ------------------------------------------------------------------------- */
514 static void print_fixed(volatile char *p)
522 case CISTPL_FUNCE_IDE_IFACE:
523 { uchar iface = *(p+2);
525 puts ((iface == CISTPL_IDE_INTERFACE) ? " IDE" : " unknown");
526 puts (" interface ");
529 case CISTPL_FUNCE_IDE_MASTER:
530 case CISTPL_FUNCE_IDE_SLAVE:
535 puts((f1 & CISTPL_IDE_SILICON) ? " [silicon]" : " [rotating]");
537 if (f1 & CISTPL_IDE_UNIQUE) {
541 puts((f1 & CISTPL_IDE_DUAL) ? " [dual]" : " [single]");
543 if (f2 & CISTPL_IDE_HAS_SLEEP) {
547 if (f2 & CISTPL_IDE_HAS_STANDBY) {
551 if (f2 & CISTPL_IDE_HAS_IDLE) {
555 if (f2 & CISTPL_IDE_LOW_POWER) {
556 puts(" [low power]");
559 if (f2 & CISTPL_IDE_REG_INHIBIT) {
560 puts(" [reg inhibit]");
563 if (f2 & CISTPL_IDE_HAS_INDEX) {
567 if (f2 & CISTPL_IDE_IOIS16) {
577 /* ------------------------------------------------------------------------- */
579 #define MAX_IDENT_CHARS 64
580 #define MAX_IDENT_FIELDS 4
582 static char *known_cards[] = {
587 static int identify(volatile char *p)
589 char id_str[MAX_IDENT_CHARS];
596 return (0); /* Don't know */
601 for (i=0; i<=4 && !done; ++i, p+=2) {
602 while ((data = *p) != '\0') {
608 if (t == &id_str[MAX_IDENT_CHARS-1]) {
618 while (--t > id_str) {
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");
636 return 0; /* don't know */
639 #endif /* CONFIG_CMD_PCMCIA */