2 * (C) Copyright 2000-2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Daniel Engström, Omicron Ceti AB
7 * SPDX-License-Identifier: GPL-2.0+
9 ********************************************************************
11 * Lots of code copied from:
13 * m8xx_pcmcia.c - Linux PCMCIA socket driver for the mpc8xx series.
14 * (C) 1999-2000 Magnus Damm <damm@bitsmart.com>
16 * "The ExCA standard specifies that socket controllers should provide
17 * two IO and five memory windows per socket, which can be independently
18 * configured and positioned in the host address space and mapped to
19 * arbitrary segments of card address space. " - David A Hinds. 1999
21 * This controller does _not_ meet the ExCA standard.
23 * m8xx pcmcia controller brief info:
24 * + 8 windows (attrib, mem, i/o)
25 * + up to two slots (SLOT_A and SLOT_B)
26 * + inputpins, outputpins, event and mask registers.
27 * - no offset register. sigh.
29 * Because of the lacking offset register we must map the whole card.
30 * We assign each memory window PCMCIA_MEM_WIN_SIZE address space.
31 * Make sure there is (PCMCIA_MEM_WIN_SIZE * PCMCIA_MEM_WIN_NO
32 * * PCMCIA_SOCKETS_NO) bytes at PCMCIA_MEM_WIN_BASE.
33 * The i/o windows are dynamically allocated at PCMCIA_IO_WIN_BASE.
34 * They are maximum 64KByte each...
51 #if defined(CONFIG_CMD_PCMCIA)
53 int pcmcia_on(int ide_base_bus
);
55 static int hardware_disable(int slot
);
56 static int hardware_enable(int slot
);
57 static int voltage_set(int slot
, int vcc
, int vpp
);
58 static void print_funcid(int func
);
59 static void print_fixed(volatile char *p
);
60 static int identify(volatile char *p
);
61 static int check_ide_device(int slot
, int ide_base_bus
);
64 /* ------------------------------------------------------------------------- */
67 const char *indent
= "\t ";
69 /* ------------------------------------------------------------------------- */
72 static struct pci_device_id supported
[] = {
73 { PCI_VENDOR_ID_TI
, 0xac50 }, /* Ti PCI1410A */
74 { PCI_VENDOR_ID_TI
, 0xac56 }, /* Ti PCI1510 */
78 static pci_dev_t devbusfn
;
79 static u32 socket_base
;
80 static u32 pcmcia_cis_ptr
;
82 int pcmcia_on(int ide_base_bus
)
92 * Find the CardBus PCI device(s).
94 if ((devbusfn
= pci_find_devices(supported
, 0)) < 0) {
95 printf("Ti CardBus: not found\n");
99 pci_read_config_word(devbusfn
, PCI_DEVICE_ID
, &dev_id
);
101 if (dev_id
== 0xac56) {
102 debug("Enable PCMCIA Ti PCI1510\n");
104 debug("Enable PCMCIA Ti PCI1410A\n");
107 pcmcia_cis_ptr
= CONFIG_SYS_PCMCIA_CIS_WIN
;
108 cis_len
= CONFIG_SYS_PCMCIA_CIS_WIN_SIZE
;
110 io_base
= CONFIG_SYS_PCMCIA_IO_WIN
;
111 io_len
= CONFIG_SYS_PCMCIA_IO_WIN_SIZE
;
114 * Setup the PCI device.
116 pci_read_config_dword(devbusfn
, PCI_BASE_ADDRESS_0
, &socket_base
);
119 socket_status
= readl(socket_base
+8);
120 if ((socket_status
& 6) == 0) {
121 printf("Card Present: ");
123 switch (socket_status
& 0x3c00) {
135 printf("unsupported Vcc ");
138 switch (socket_status
& 0x30) {
140 printf("16bit PC-Card\n");
143 printf("32bit CardBus Card\n");
146 printf("8bit PC-Card\n");
152 writeb(0x41, socket_base
+ 0x806); /* Enable I/O window 0 and memory window 0 */
153 writeb(0x0e, socket_base
+ 0x807); /* Reset I/O window options */
155 /* Careful: the linux yenta driver do not seem to reset the offset
156 * in the i/o windows, so leaving them non-zero is a problem */
158 writeb(io_base
& 0xff, socket_base
+ 0x808); /* I/O window 0 base address */
159 writeb(io_base
>>8, socket_base
+ 0x809);
160 writeb((io_base
+ io_len
- 1) & 0xff, socket_base
+ 0x80a); /* I/O window 0 end address */
161 writeb((io_base
+ io_len
- 1)>>8, socket_base
+ 0x80b);
162 writeb(0x00, socket_base
+ 0x836); /* I/O window 0 offset address 0x000 */
163 writeb(0x00, socket_base
+ 0x837);
166 writeb((pcmcia_cis_ptr
&0x000ff000) >> 12,
167 socket_base
+ 0x810); /* Memory window 0 start address bits 19-12 */
168 writeb((pcmcia_cis_ptr
&0x00f00000) >> 20,
169 socket_base
+ 0x811); /* Memory window 0 start address bits 23-20 */
170 writeb(((pcmcia_cis_ptr
+cis_len
-1) & 0x000ff000) >> 12,
171 socket_base
+ 0x812); /* Memory window 0 end address bits 19-12*/
172 writeb(((pcmcia_cis_ptr
+cis_len
-1) & 0x00f00000) >> 20,
173 socket_base
+ 0x813); /* Memory window 0 end address bits 23-20*/
174 writeb(0x00, socket_base
+ 0x814); /* Memory window 0 offset bits 19-12 */
175 writeb(0x40, socket_base
+ 0x815); /* Memory window 0 offset bits 23-20 and
176 * options (read/write, attribute access) */
177 writeb(0x00, socket_base
+ 0x816); /* ExCA card-detect and general control */
178 writeb(0x00, socket_base
+ 0x81e); /* ExCA global control (interrupt modes) */
180 writeb((pcmcia_cis_ptr
& 0xff000000) >> 24,
181 socket_base
+ 0x840); /* Memory window address bits 31-24 */
184 /* turn off voltage */
185 if (voltage_set(slot
, 0, 0)) {
189 /* Enable external hardware */
190 if (hardware_enable(slot
)) {
194 if (check_ide_device(slot
, ide_base_bus
)) {
201 /* ------------------------------------------------------------------------- */
204 #if defined(CONFIG_CMD_PCMCIA)
205 int pcmcia_off (void)
209 writeb(0x00, socket_base
+ 0x806); /* disable all I/O and memory windows */
211 writeb(0x00, socket_base
+ 0x808); /* I/O window 0 base address */
212 writeb(0x00, socket_base
+ 0x809);
213 writeb(0x00, socket_base
+ 0x80a); /* I/O window 0 end address */
214 writeb(0x00, socket_base
+ 0x80b);
215 writeb(0x00, socket_base
+ 0x836); /* I/O window 0 offset address */
216 writeb(0x00, socket_base
+ 0x837);
218 writeb(0x00, socket_base
+ 0x80c); /* I/O window 1 base address */
219 writeb(0x00, socket_base
+ 0x80d);
220 writeb(0x00, socket_base
+ 0x80e); /* I/O window 1 end address */
221 writeb(0x00, socket_base
+ 0x80f);
222 writeb(0x00, socket_base
+ 0x838); /* I/O window 1 offset address */
223 writeb(0x00, socket_base
+ 0x839);
225 writeb(0x00, socket_base
+ 0x810); /* Memory window 0 start address */
226 writeb(0x00, socket_base
+ 0x811);
227 writeb(0x00, socket_base
+ 0x812); /* Memory window 0 end address */
228 writeb(0x00, socket_base
+ 0x813);
229 writeb(0x00, socket_base
+ 0x814); /* Memory window 0 offset */
230 writeb(0x00, socket_base
+ 0x815);
232 writeb(0xc0, socket_base
+ 0x840); /* Memory window 0 page address */
235 /* turn off voltage */
236 voltage_set(slot
, 0, 0);
238 /* disable external hardware */
239 printf ("Shutdown and Poweroff Ti PCI1410A\n");
240 hardware_disable(slot
);
247 /* ------------------------------------------------------------------------- */
250 #define MAX_TUPEL_SZ 512
251 #define MAX_FEATURES 4
252 int ide_devices_found
;
253 static int check_ide_device(int slot
, int ide_base_bus
)
255 volatile char *ident
= NULL
;
256 volatile char *feature_p
[MAX_FEATURES
];
257 volatile char *p
, *start
;
261 ushort config_base
= 0;
266 debug ("PCMCIA MEM: %08X\n", pcmcia_cis_ptr
);
268 socket_status
= readl(socket_base
+8);
270 if ((socket_status
& 6) != 0 || (socket_status
& 0x20) != 0) {
271 printf("no card or CardBus card\n");
275 start
= p
= (volatile char *) pcmcia_cis_ptr
;
277 while ((p
- start
) < MAX_TUPEL_SZ
) {
281 if (code
== 0xFF) { /* End of chain */
286 #if defined(DEBUG) && (DEBUG > 1)
288 volatile uchar
*q
= p
;
289 printf ("\nTuple code %02x length %d\n\tData:",
292 for (i
= 0; i
< len
; ++i
) {
293 printf (" %02x", *q
);
303 /* Fix for broken SanDisk which may have 0x80 bit set */
307 if (n_features
< MAX_FEATURES
)
308 feature_p
[n_features
++] = p
;
311 config_base
= (*(p
+6) << 8) + (*(p
+4));
312 debug ("\n## Config_base = %04x ###\n", config_base
);
319 found
= identify(ident
);
321 if (func_id
!= ((uchar
)~0)) {
322 print_funcid (func_id
);
324 if (func_id
== CISTPL_FUNCID_FIXED
)
327 return 1; /* no disk drive */
330 for (i
=0; i
<n_features
; ++i
) {
331 print_fixed(feature_p
[i
]);
335 printf("unknown card type\n");
339 /* select config index 1 */
340 writeb(1, pcmcia_cis_ptr
+ config_base
);
343 printf("Confiuration Option Register: %02x\n", readb(pcmcia_cis_ptr
+ config_base
));
344 printf("Card Confiuration and Status Register: %02x\n", readb(pcmcia_cis_ptr
+ config_base
+ 2));
345 printf("Pin Replacement Register Register: %02x\n", readb(pcmcia_cis_ptr
+ config_base
+ 4));
346 printf("Socket and Copy Register: %02x\n", readb(pcmcia_cis_ptr
+ config_base
+ 6));
348 ide_devices_found
|= (1 << (slot
+ide_base_bus
));
354 static int voltage_set(int slot
, int vcc
, int vpp
)
361 reg
= socket_base
+ 0x10;
372 socket_control
|= 0x20;
375 socket_control
|= 0x30;
383 socket_control
|= 0x1;
386 socket_control
|= 0x2;
389 socket_control
|= 0x3;
395 writel(socket_control
, reg
);
397 debug ("voltage_set: Ti PCI1410A Slot %d, Vcc=%d.%d, Vpp=%d.%d\n",
398 slot
, vcc
/10, vcc
%10, vpp
/10, vpp
%10);
405 static int hardware_enable(int slot
)
411 socket_status
= readl(socket_base
+8);
413 if ((socket_status
& 6) == 0) {
415 switch (socket_status
& 0x3c00) {
419 voltage_set(slot
, 50, 0);
422 voltage_set(slot
, 33, 0);
425 voltage_set(slot
, 33, 0);
428 voltage_set(slot
, 0, 0);
432 voltage_set(slot
, 0, 0);
435 pci_read_config_word(devbusfn
, PCI_BRIDGE_CONTROL
, &brg_ctrl
);
436 brg_ctrl
&= ~PCI_BRIDGE_CTL_BUS_RESET
;
437 pci_write_config_word(devbusfn
, PCI_BRIDGE_CONTROL
, brg_ctrl
);
438 is_82365sl
= ((readb(socket_base
+0x800) & 0x0f) == 2);
439 writeb(is_82365sl
?0x90:0x98, socket_base
+0x802);
440 writeb(0x67, socket_base
+0x803);
443 printf("ExCA Id %02x, Card Status %02x, Power config %02x, Interrupt Config %02x, bridge control %04x %d\n",
444 readb(socket_base
+0x800), readb(socket_base
+0x801),
445 readb(socket_base
+0x802), readb(socket_base
+0x803), brg_ctrl
, is_82365sl
);
448 return ((readb(socket_base
+0x801)&0x6c)==0x6c)?0:1;
452 static int hardware_disable(int slot
)
454 voltage_set(slot
, 0, 0);
458 static void print_funcid(int func
)
462 case CISTPL_FUNCID_MULTI
:
463 puts(" Multi-Function");
465 case CISTPL_FUNCID_MEMORY
:
468 case CISTPL_FUNCID_SERIAL
:
469 puts(" Serial Port");
471 case CISTPL_FUNCID_PARALLEL
:
472 puts(" Parallel Port");
474 case CISTPL_FUNCID_FIXED
:
477 case CISTPL_FUNCID_VIDEO
:
478 puts(" Video Adapter");
480 case CISTPL_FUNCID_NETWORK
:
481 puts(" Network Adapter");
483 case CISTPL_FUNCID_AIMS
:
486 case CISTPL_FUNCID_SCSI
:
487 puts(" SCSI Adapter");
496 /* ------------------------------------------------------------------------- */
498 static void print_fixed(volatile char *p
)
506 case CISTPL_FUNCE_IDE_IFACE
:
507 { uchar iface
= *(p
+2);
509 puts ((iface
== CISTPL_IDE_INTERFACE
) ? " IDE" : " unknown");
510 puts (" interface ");
513 case CISTPL_FUNCE_IDE_MASTER
:
514 case CISTPL_FUNCE_IDE_SLAVE
:
519 puts((f1
& CISTPL_IDE_SILICON
) ? " [silicon]" : " [rotating]");
521 if (f1
& CISTPL_IDE_UNIQUE
) {
525 puts((f1
& CISTPL_IDE_DUAL
) ? " [dual]" : " [single]");
527 if (f2
& CISTPL_IDE_HAS_SLEEP
) {
531 if (f2
& CISTPL_IDE_HAS_STANDBY
) {
535 if (f2
& CISTPL_IDE_HAS_IDLE
) {
539 if (f2
& CISTPL_IDE_LOW_POWER
) {
540 puts(" [low power]");
543 if (f2
& CISTPL_IDE_REG_INHIBIT
) {
544 puts(" [reg inhibit]");
547 if (f2
& CISTPL_IDE_HAS_INDEX
) {
551 if (f2
& CISTPL_IDE_IOIS16
) {
561 /* ------------------------------------------------------------------------- */
563 #define MAX_IDENT_CHARS 64
564 #define MAX_IDENT_FIELDS 4
566 static char *known_cards
[] = {
571 static int identify(volatile char *p
)
573 char id_str
[MAX_IDENT_CHARS
];
580 return (0); /* Don't know */
585 for (i
=0; i
<=4 && !done
; ++i
, p
+=2) {
586 while ((data
= *p
) != '\0') {
592 if (t
== &id_str
[MAX_IDENT_CHARS
-1]) {
602 while (--t
> id_str
) {
612 for (card
=known_cards
; *card
; ++card
) {
613 debug ("## Compare against \"%s\"\n", *card
);
614 if (strcmp(*card
, id_str
) == 0) { /* found! */
615 debug ("## CARD FOUND ##\n");
620 return 0; /* don't know */
623 #endif /* CONFIG_CMD_PCMCIA */