summaryrefslogtreecommitdiffstats
path: root/drivers/pcmcia/tcic.c
blob: 2a613e920fd4d19c4b9b802ec0ce291916c85fd8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
/*======================================================================

    Device driver for Databook TCIC-2 PCMCIA controller

    tcic.c 1.111 2000/02/15 04:13:12

    The contents of this file are subject to the Mozilla Public
    License Version 1.1 (the "License"); you may not use this file
    except in compliance with the License. You may obtain a copy of
    the License at http://www.mozilla.org/MPL/

    Software distributed under the License is distributed on an "AS
    IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
    implied. See the License for the specific language governing
    rights and limitations under the License.

    The initial developer of the original code is David A. Hinds
    <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
    are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.

    Alternatively, the contents of this file may be used under the
    terms of the GNU General Public License version 2 (the "GPL"), in which
    case the provisions of the GPL are applicable instead of the
    above.  If you wish to allow the use of your version of this file
    only under the terms of the GPL and not to allow others to use
    your version of this file under the MPL, indicate your decision
    by deleting the provisions above and replace them with the notice
    and other provisions required by the GPL.  If you do not delete
    the provisions above, a recipient may use your version of this
    file under either the MPL or the GPL.
    
======================================================================*/

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/timer.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/workqueue.h>
#include <linux/platform_device.h>
#include <linux/bitops.h>

#include <asm/io.h>
#include <asm/system.h>

#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/ss.h>
#include "tcic.h"

#ifdef CONFIG_PCMCIA_DEBUG
static int pc_debug;

module_param(pc_debug, int, 0644);
static const char version[] =
"tcic.c 1.111 2000/02/15 04:13:12 (David Hinds)";

#define debug(lvl, fmt, arg...) do {				\
	if (pc_debug > (lvl))					\
		printk(KERN_DEBUG "tcic: " fmt , ## arg);	\
} while (0)
#else
#define debug(lvl, fmt, arg...) do { } while (0)
#endif

MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
MODULE_DESCRIPTION("Databook TCIC-2 PCMCIA socket driver");
MODULE_LICENSE("Dual MPL/GPL");

/*====================================================================*/

/* Parameters that can be set with 'insmod' */

/* The base port address of the TCIC-2 chip */
static unsigned long tcic_base = TCIC_BASE;

/* Specify a socket number to ignore */
static int ignore = -1;

/* Probe for safe interrupts? */
static int do_scan = 1;

/* Bit map of interrupts to choose from */
static u_int irq_mask = 0xffff;
static int irq_list[16];
static unsigned int irq_list_count;

/* The card status change interrupt -- 0 means autoselect */
static int cs_irq;

/* Poll status interval -- 0 means default to interrupt */
static int poll_interval;

/* Delay for card status double-checking */
static int poll_quick = HZ/20;

/* CCLK external clock time, in nanoseconds.  70 ns = 14.31818 MHz */
static int cycle_time = 70;

module_param(tcic_base, ulong, 0444);
module_param(ignore, int, 0444);
module_param(do_scan, int, 0444);
module_param(irq_mask, int, 0444);
module_param_array(irq_list, int, &irq_list_count, 0444);
module_param(cs_irq, int, 0444);
module_param(poll_interval, int, 0444);
module_param(poll_quick, int, 0444);
module_param(cycle_time, int, 0444);

/*====================================================================*/

static irqreturn_t tcic_interrupt(int irq, void *dev);
static void tcic_timer(u_long data);
static struct pccard_operations tcic_operations;

struct tcic_socket {
    u_short	psock;
    u_char	last_sstat;
    u_char	id;
    struct pcmcia_socket	socket;
};

static struct timer_list poll_timer;
static int tcic_timer_pending;

static int sockets;
static struct tcic_socket socket_table[2];

/*====================================================================*/

/* Trick when selecting interrupts: the TCIC sktirq pin is supposed
   to map to irq 11, but is coded as 0 or 1 in the irq registers. */
#define TCIC_IRQ(x) ((x) ? (((x) == 11) ? 1 : (x)) : 15)

#ifdef DEBUG_X
static u_char tcic_getb(u_char reg)
{
    u_char val = inb(tcic_base+reg);
    printk(KERN_DEBUG "tcic_getb(%#lx) = %#x\n", tcic_base+reg, val);
    return val;
}

static u_short tcic_getw(u_char reg)
{
    u_short val = inw(tcic_base+reg);
    printk(KERN_DEBUG "tcic_getw(%#lx) = %#x\n", tcic_base+reg, val);
    return val;
}

static void tcic_setb(u_char reg, u_char data)
{
    printk(KERN_DEBUG "tcic_setb(%#lx, %#x)\n", tcic_base+reg, data);
    outb(data, tcic_base+reg);
}

static void tcic_setw(u_char reg, u_short data)
{
    printk(KERN_DEBUG "tcic_setw(%#lx, %#x)\n", tcic_base+reg, data);
    outw(data, tcic_base+reg);
}
#else
#define tcic_getb(reg) inb(tcic_base+reg)
#define tcic_getw(reg) inw(tcic_base+reg)
#define tcic_setb(reg, data) outb(data, tcic_base+reg)
#define tcic_setw(reg, data) outw(data, tcic_base+reg)
#endif

static void tcic_setl(u_char reg, u_int data)
{
#ifdef DEBUG_X
    printk(KERN_DEBUG "tcic_setl(%#x, %#lx)\n", tcic_base+reg, data);
#endif
    outw(data & 0xffff, tcic_base+reg);
    outw(data >> 16, tcic_base+reg+2);
}

static void tcic_aux_setb(u_short reg, u_char data)
{
    u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg;
    tcic_setb(TCIC_MODE, mode);
    tcic_setb(TCIC_AUX, data);
}

static u_short tcic_aux_getw(u_short reg)
{
    u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg;
    tcic_setb(TCIC_MODE, mode);
    return tcic_getw(TCIC_AUX);
}

static void tcic_aux_setw(u_short reg, u_short data)
{
    u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg;
    tcic_setb(TCIC_MODE, mode);
    tcic_setw(TCIC_AUX, data);
}

/*====================================================================*/

/* Time conversion functions */

static int to_cycles(int ns)
{
    if (ns < 14)
	return 0;
    else
	return 2*(ns-14)/cycle_time;
}

/*====================================================================*/

static volatile u_int irq_hits;

static irqreturn_t __init tcic_irq_count(int irq, void *dev)
{
    irq_hits++;
    return IRQ_HANDLED;
}

static u_int __init try_irq(int irq)
{
    u_short cfg;

    irq_hits = 0;
    if (request_irq(irq, tcic_irq_count, 0, "irq scan", tcic_irq_count) != 0)
	return -1;
    mdelay(10);
    if (irq_hits) {
	free_irq(irq, tcic_irq_count);
	return -1;
    }

    /* Generate one interrupt */
    cfg = TCIC_SYSCFG_AUTOBUSY | 0x0a00;
    tcic_aux_setw(TCIC_AUX_SYSCFG, cfg | TCIC_IRQ(irq));
    tcic_setb(TCIC_IENA, TCIC_IENA_ERR | TCIC_IENA_CFG_HIGH);
    tcic_setb(TCIC_ICSR, TCIC_ICSR_ERR | TCIC_ICSR_JAM);

    udelay(1000);
    free_irq(irq, tcic_irq_count);

    /* Turn off interrupts */
    tcic_setb(TCIC_IENA, TCIC_IENA_CFG_OFF);
    while (tcic_getb(TCIC_ICSR))
	tcic_setb(TCIC_ICSR, TCIC_ICSR_JAM);
    tcic_aux_setw(TCIC_AUX_SYSCFG, cfg);
    
    return (irq_hits != 1);
}

static u_int __init irq_scan(u_int mask0)
{
    u_int mask1;
    int i;

#ifdef __alpha__
#define PIC 0x4d0
    /* Don't probe level-triggered interrupts -- reserved for PCI */
    int level_mask = inb_p(PIC) | (inb_p(PIC+1) << 8);
    if (level_mask)
	mask0 &= ~level_mask;
#endif

    mask1 = 0;
    if (do_scan) {
	for (i = 0; i < 16; i++)
	    if ((mask0 & (1 << i)) && (try_irq(i) == 0))
		mask1 |= (1 << i);
	for (i = 0; i < 16; i++)
	    if ((mask1 & (1 << i)) && (try_irq(i) != 0)) {
		mask1 ^= (1 << i);
	    }
    }
    
    if (mask1) {
	printk("scanned");
    } else {
	/* Fallback: just find interrupts that aren't in use */
	for (i = 0; i < 16; i++)
	    if ((mask0 & (1 << i)) &&
		(request_irq(i, tcic_irq_count, 0, "x", tcic_irq_count) == 0)) {
		mask1 |= (1 << i);
		free_irq(i, tcic_irq_count);
	    }
	printk("default");
    }
    
    printk(") = ");
    for (i = 0; i < 16; i++)
	if (mask1 & (1<<i))
	    printk("%s%d", ((mask1 & ((1<<i)-1)) ? "," : ""), i);
    printk(" ");
    
    return mask1;
}

/*======================================================================

    See if a card is present, powered up, in IO mode, and already
    bound to a (non-PCMCIA) Linux driver.

    We make an exception for cards that look like serial devices.
    
======================================================================*/

static int __init is_active(int s)
{
    u_short scf1, ioctl, base, num;
    u_char pwr, sstat;
    u_int addr;
    
    tcic_setl(TCIC_ADDR, (s << TCIC_ADDR_SS_SHFT)
	      | TCIC_ADDR_INDREG | TCIC_SCF1(s));
    scf1 = tcic_getw(TCIC_DATA);
    pwr = tcic_getb(TCIC_PWR);
    sstat = tcic_getb(TCIC_SSTAT);
    addr = TCIC_IWIN(s, 0);
    tcic_setw(TCIC_ADDR, addr + TCIC_IBASE_X);
    base = tcic_getw(TCIC_DATA);
    tcic_setw(TCIC_ADDR, addr + TCIC_ICTL_X);
    ioctl = tcic_getw(TCIC_DATA);

    if (ioctl & TCIC_ICTL_TINY)
	num = 1;
    else {
	num = (base ^ (base-1));
	base = base & (base-1);
    }

    if ((sstat & TCIC_SSTAT_CD) && (pwr & TCIC_PWR_VCC(s)) &&
	(scf1 & TCIC_SCF1_IOSTS) && (ioctl & TCIC_ICTL_ENA) &&
	((base & 0xfeef) != 0x02e8)) {
	struct resource *res = request_region(base, num, "tcic-2");
	if (!res) /* region is busy */
	    return 1;
	release_region(base, num);
    }

    return 0;
}

/*======================================================================

    This returns the revision code for the specified socket.
    
======================================================================*/

static int __init get_tcic_id(void)
{
    u_short id;
    
    tcic_aux_setw(TCIC_AUX_TEST, TCIC_TEST_DIAG);
    id = tcic_aux_getw(TCIC_AUX_ILOCK);
    id = (id & TCIC_ILOCKTEST_ID_MASK) >> TCIC_ILOCKTEST_ID_SH;
    tcic_aux_setw(TCIC_AUX_TEST, 0);
    return id;
}

/*====================================================================*/

static struct device_driver tcic_driver = {
	.name = "tcic-pcmcia",
	.bus = &platform_bus_type,
	.suspend = pcmcia_socket_dev_suspend,
	.resume = pcmcia_socket_dev_resume,
};

static struct platform_device tcic_device = {
	.name = "tcic-pcmcia",
	.id = 0,
};


static int __init init_tcic(void)
{
    int i, sock, ret = 0;
    u_int mask, scan;

    if (driver_register(&tcic_driver))
	return -1;
    
    printk(KERN_INFO "Databook TCIC-2 PCMCIA probe: ");
    sock = 0;

    if (!request_region(tcic_base, 16, "tcic-2")) {
	printk("could not allocate ports,\n ");
	driver_unregister(&tcic_driver);
	return -ENODEV;
    }
    else {
	tcic_setw(TCIC_ADDR, 0);
	if (tcic_getw(TCIC_ADDR) == 0) {
	    tcic_setw(TCIC_ADDR, 0xc3a5);
	    if (tcic_getw(TCIC_ADDR) == 0xc3a5) sock = 2;
	}
	if (sock == 0) {
	    /* See if resetting the controller does any good */
	    tcic_setb(TCIC_SCTRL, TCIC_SCTRL_RESET);
	    tcic_setb(TCIC_SCTRL, 0);
	    tcic_setw(TCIC_ADDR, 0);
	    if (tcic_getw(TCIC_ADDR) == 0) {
		tcic_setw(TCIC_ADDR, 0xc3a5);
		if (tcic_getw(TCIC_ADDR) == 0xc3a5) sock = 2;
	    }
	}
    }
    if (sock == 0) {
	printk("not found.\n");
	release_region(tcic_base, 16);
	driver_unregister(&tcic_driver);
	return -ENODEV;
    }

    sockets = 0;
    for (i = 0; i < sock; i++) {
	if ((i == ignore) || is_active(i)) continue;
	socket_table[sockets].psock = i;
	socket_table[sockets].id = get_tcic_id();

	socket_table[sockets].socket.owner = THIS_MODULE;
	/* only 16-bit cards, memory windows must be size-aligned */
	/* No PCI or CardBus support */
	socket_table[sockets].socket.features = SS_CAP_PCCARD | SS_CAP_MEM_ALIGN;
	/* irq 14, 11, 10, 7, 6, 5, 4, 3 */
	socket_table[sockets].socket.irq_mask = 0x4cf8;
	/* 4K minimum window size */
	socket_table[sockets].socket.map_size = 0x1000;		
	sockets++;
    }

    switch (socket_table[0].id) {
    case TCIC_ID_DB86082:
	printk("DB86082"); break;
    case TCIC_ID_DB86082A:
	printk("DB86082A"); break;
    case TCIC_ID_DB86084:
	printk("DB86084"); break;
    case TCIC_ID_DB86084A:
	printk("DB86084A"); break;
    case TCIC_ID_DB86072:
	printk("DB86072"); break;
    case TCIC_ID_DB86184:
	printk("DB86184"); break;
    case TCIC_ID_DB86082B:
	printk("DB86082B"); break;
    default:
	printk("Unknown ID 0x%02x", socket_table[0].id);
    }
    
    /* Set up polling */
    poll_timer.function = &tcic_timer;
    poll_timer.data = 0;
    init_timer(&poll_timer);

    /* Build interrupt mask */
    printk(", %d sockets\n" KERN_INFO "  irq list (", sockets);
    if (irq_list_count == 0)
	mask = irq_mask;
    else
	for (i = mask = 0; i < irq_list_count; i++)
	    mask |= (1<<irq_list[i]);

    /* irq 14, 11, 10, 7, 6, 5, 4, 3 */
    mask &= 0x4cf8;
    /* Scan interrupts */
    mask = irq_scan(mask);
    for (i=0;i<sockets;i++)
	    socket_table[i].socket.irq_mask = mask;
    
    /* Check for only two interrupts available */
    scan = (mask & (mask-1));
    if (((scan & (scan-1)) == 0) && (poll_interval == 0))
	poll_interval = HZ;
    
    if (poll_interval == 0) {
	/* Avoid irq 12 unless it is explicitly requested */
	u_int cs_mask = mask & ((cs_irq) ? (1<<cs_irq) : ~(1<<12));
	for (i = 15; i > 0; i--)
	    if ((cs_mask & (1 << i)) &&
		(request_irq(i, tcic_interrupt, 0, "tcic",
			     tcic_interrupt) == 0))
		break;
	cs_irq = i;
	if (cs_irq == 0) poll_interval = HZ;
    }
    
    if (socket_table[0].socket.irq_mask & (1 << 11))
	printk("sktirq is irq 11, ");
    if (cs_irq != 0)
	printk("status change on irq %d\n", cs_irq);
    else
	printk("polled status, interval = %d ms\n",
	       poll_interval * 1000 / HZ);
    
    for (i = 0; i < sockets; i++) {
	tcic_setw(TCIC_ADDR+2, socket_table[i].psock << TCIC_SS_SHFT);
	socket_table[i].last_sstat = tcic_getb(TCIC_SSTAT);
    }
    
    /* jump start interrupt handler, if needed */
    tcic_interrupt(0, NULL);

    platform_device_register(&tcic_device);

    for (i = 0; i < sockets; i++) {
	    socket_table[i].socket.ops = &tcic_operations;
	    socket_table[i].socket.resource_ops = &pccard_nonstatic_ops;
	    socket_table[i].socket.dev.parent = &tcic_device.dev;
	    ret = pcmcia_register_socket(&socket_table[i].socket);
	    if (ret && i)
		    pcmcia_unregister_socket(&socket_table[0].socket);
    }
    
    return ret;

    return 0;
    
} /* init_tcic */

/*====================================================================*/

static void __exit exit_tcic(void)
{
    int i;

    del_timer_sync(&poll_timer);
    if (cs_irq != 0) {
	tcic_aux_setw(TCIC_AUX_SYSCFG, TCIC_SYSCFG_AUTOBUSY|0x0a00);
	free_irq(cs_irq, tcic_interrupt);
    }
    release_region(tcic_base, 16);

    for (i = 0; i < sockets; i++) {
	    pcmcia_unregister_socket(&socket_table[i].socket);	    
    }

    platform_device_unregister(&tcic_device);
    driver_unregister(&tcic_driver);
} /* exit_tcic */

/*====================================================================*/

static irqreturn_t tcic_interrupt(int irq, void *dev)
{
    int i, quick = 0;
    u_char latch, sstat;
    u_short psock;
    u_int events;
    static volatile int active = 0;

    if (active) {
	printk(KERN_NOTICE "tcic: reentered interrupt handler!\n");
	return IRQ_NONE;
    } else
	active = 1;

    debug(2, "tcic_interrupt()\n");
    
    for (i = 0; i < sockets; i++) {
	psock = socket_table[i].psock;
	tcic_setl(TCIC_ADDR, (psock << TCIC_ADDR_SS_SHFT)
		  | TCIC_ADDR_INDREG | TCIC_SCF1(psock));
	sstat = tcic_getb(TCIC_SSTAT);
	latch = sstat ^ socket_table[psock].last_sstat;
	socket_table[i].last_sstat = sstat;
	if (tcic_getb(TCIC_ICSR) & TCIC_ICSR_CDCHG) {
	    tcic_setb(TCIC_ICSR, TCIC_ICSR_CLEAR);
	    quick = 1;
	}
	if (latch == 0)
	    continue;
	events = (latch & TCIC_SSTAT_CD) ? SS_DETECT : 0;
	events |= (latch & TCIC_SSTAT_WP) ? SS_WRPROT : 0;
	if (tcic_getw(TCIC_DATA) & TCIC_SCF1_IOSTS) {
	    events |= (latch & TCIC_SSTAT_LBAT1) ? SS_STSCHG : 0;
	} else {
	    events |= (latch & TCIC_SSTAT_RDY) ? SS_READY : 0;
	    events |= (latch & TCIC_SSTAT_LBAT1) ? SS_BATDEAD : 0;
	    events |= (latch & TCIC_SSTAT_LBAT2) ? SS_BATWARN : 0;
	}
	if (events) {
		pcmcia_parse_events(&socket_table[i].socket, events);
	}
    }

    /* Schedule next poll, if needed */
    if (((cs_irq == 0) || quick) && (!tcic_timer_pending)) {
	poll_timer.expires = jiffies + (quick ? poll_quick : poll_interval);
	add_timer(&poll_timer);
	tcic_timer_pending = 1;
    }
    active = 0;
    
    debug(2, "interrupt done\n");
    return IRQ_HANDLED;
} /* tcic_interrupt */

static void tcic_timer(u_long data)
{
    debug(2, "tcic_timer()\n");
    tcic_timer_pending = 0;
    tcic_interrupt(0, NULL);
} /* tcic_timer */

/*====================================================================*/

static int tcic_get_status(struct pcmcia_socket *sock, u_int *value)
{
    u_short psock = container_of(sock, struct tcic_socket, socket)->psock;
    u_char reg;

    tcic_setl(TCIC_ADDR, (psock << TCIC_ADDR_SS_SHFT)
	      | TCIC_ADDR_INDREG | TCIC_SCF1(psock));
    reg = tcic_getb(TCIC_SSTAT);
    *value  = (reg & TCIC_SSTAT_CD) ? SS_DETECT : 0;
    *value |= (reg & TCIC_SSTAT_WP) ? SS_WRPROT : 0;
    if (tcic_getw(TCIC_DATA) & TCIC_SCF1_IOSTS) {
	*value |= (reg & TCIC_SSTAT_LBAT1) ? SS_STSCHG : 0;
    } else {
	*value |= (reg & TCIC_SSTAT_RDY) ? SS_READY : 0;
	*value |= (reg & TCIC_SSTAT_LBAT1) ? SS_BATDEAD : 0;
	*value |= (reg & TCIC_SSTAT_LBAT2) ? SS_BATWARN : 0;
    }
    reg = tcic_getb(TCIC_PWR);
    if (reg & (TCIC_PWR_VCC(psock)|TCIC_PWR_VPP(psock)))
	*value |= SS_POWERON;
    debug(1, "GetStatus(%d) = %#2.2x\n", psock, *value);
    return 0;
} /* tcic_get_status */

/*====================================================================*/

static int tcic_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
{
    u_short psock = container_of(sock, struct tcic_socket, socket)->psock;
    u_char reg;
    u_short scf1, scf2;

    debug(1, "SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, "
	  "io_irq %d, csc_mask %#2.2x)\n", psock, state->flags,
	  state->Vcc, state->Vpp, state->io_irq, state->csc_mask);
    tcic_setw(TCIC_ADDR+2, (psock << TCIC_SS_SHFT) | TCIC_ADR2_INDREG);

    reg = tcic_getb(TCIC_PWR);
    reg &= ~(TCIC_PWR_VCC(psock) | TCIC_PWR_VPP(psock));

    if (state->Vcc == 50) {
	switch (state->Vpp) {
	case 0:   reg |= TCIC_PWR_VCC(psock) | TCIC_PWR_VPP(psock); break;
	case 50:  reg |= TCIC_PWR_VCC(psock); break;
	case 120: reg |= TCIC_PWR_VPP(psock); break;
	default:  return -EINVAL;
	}
    } else if (state->Vcc != 0)
	return -EINVAL;

    if (reg != tcic_getb(TCIC_PWR))
	tcic_setb(TCIC_PWR, reg);

    reg = TCIC_ILOCK_HOLD_CCLK | TCIC_ILOCK_CWAIT;
    if (state->flags & SS_OUTPUT_ENA) {
	tcic_setb(TCIC_SCTRL, TCIC_SCTRL_ENA);
	reg |= TCIC_ILOCK_CRESENA;
    } else
	tcic_setb(TCIC_SCTRL, 0);
    if (state->flags & SS_RESET)
	reg |= TCIC_ILOCK_CRESET;
    tcic_aux_setb(TCIC_AUX_ILOCK, reg);
    
    tcic_setw(TCIC_ADDR, TCIC_SCF1(psock));
    scf1 = TCIC_SCF1_FINPACK;
    scf1 |= TCIC_IRQ(state->io_irq);
    if (state->flags & SS_IOCARD) {
	scf1 |= TCIC_SCF1_IOSTS;
	if (state->flags & SS_SPKR_ENA)
	    scf1 |= TCIC_SCF1_SPKR;
	if (state->flags & SS_DMA_MODE)
	    scf1 |= TCIC_SCF1_DREQ2 << TCIC_SCF1_DMA_SHIFT;
    }
    tcic_setw(TCIC_DATA, scf1);

    /* Some general setup stuff, and configure status interrupt */
    reg = TCIC_WAIT_ASYNC | TCIC_WAIT_SENSE | to_cycles(250);
    tcic_aux_setb(TCIC_AUX_WCTL, reg);
    tcic_aux_setw(TCIC_AUX_SYSCFG, TCIC_SYSCFG_AUTOBUSY|0x0a00|
		  TCIC_IRQ(cs_irq));
    
    /* Card status change interrupt mask */
    tcic_setw(TCIC_ADDR, TCIC_SCF2(psock));
    scf2 = TCIC_SCF2_MALL;
    if (state->csc_mask & SS_DETECT) scf2 &= ~TCIC_SCF2_MCD;
    if (state->flags & SS_IOCARD) {
	if (state->csc_mask & SS_STSCHG) reg &= ~TCIC_SCF2_MLBAT1;
    } else {
	if (state->csc_mask & SS_BATDEAD) reg &= ~TCIC_SCF2_MLBAT1;
	if (state->csc_mask & SS_BATWARN) reg &= ~TCIC_SCF2_MLBAT2;
	if (state->csc_mask & SS_READY) reg &= ~TCIC_SCF2_MRDY;
    }
    tcic_setw(TCIC_DATA, scf2);
    /* For the ISA bus, the irq should be active-high totem-pole */
    tcic_setb(TCIC_IENA, TCIC_IENA_CDCHG | TCIC_IENA_CFG_HIGH);

    return 0;
} /* tcic_set_socket */
  
/*====================================================================*/

static int tcic_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
{
    u_short psock = container_of(sock, struct tcic_socket, socket)->psock;
    u_int addr;
    u_short base, len, ioctl;
    
    debug(1, "SetIOMap(%d, %d, %#2.2x, %d ns, "
	  "%#x-%#x)\n", psock, io->map, io->flags,
	  io->speed, io->start, io->stop);
    if ((io->map > 1) || (io->start > 0xffff) || (io->stop > 0xffff) ||
	(io->stop < io->start)) return -EINVAL;
    tcic_setw(TCIC_ADDR+2, TCIC_ADR2_INDREG | (psock << TCIC_SS_SHFT));
    addr = TCIC_IWIN(psock, io->map);

    base = io->start; len = io->stop - io->start;
    /* Check to see that len+1 is power of two, etc */
    if ((len & (len+1)) || (base & len)) return -EINVAL;
    base |= (len+1)>>1;
    tcic_setw(TCIC_ADDR, addr + TCIC_IBASE_X);
    tcic_setw(TCIC_DATA, base);
    
    ioctl  = (psock << TCIC_ICTL_SS_SHFT);
    ioctl |= (len == 0) ? TCIC_ICTL_TINY : 0;
    ioctl |= (io->flags & MAP_ACTIVE) ? TCIC_ICTL_ENA : 0;
    ioctl |= to_cycles(io->speed) & TCIC_ICTL_WSCNT_MASK;
    if (!(io->flags & MAP_AUTOSZ)) {
	ioctl |= TCIC_ICTL_QUIET;
	ioctl |= (io->flags & MAP_16BIT) ? TCIC_ICTL_BW_16 : TCIC_ICTL_BW_8;
    }
    tcic_setw(TCIC_ADDR, addr + TCIC_ICTL_X);
    tcic_setw(TCIC_DATA, ioctl);
    
    return 0;
} /* tcic_set_io_map */

/*====================================================================*/

static int tcic_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
{
    u_short psock = container_of(sock, struct tcic_socket, socket)->psock;
    u_short addr, ctl;
    u_long base, len, mmap;

    debug(1, "SetMemMap(%d, %d, %#2.2x, %d ns, "
	  "%#llx-%#llx, %#x)\n", psock, mem->map, mem->flags,
	  mem->speed, (unsigned long long)mem->res->start,
	  (unsigned long long)mem->res->end, mem->card_start);
    if ((mem->map > 3) || (mem->card_start > 0x3ffffff) ||
	(mem->res->start > 0xffffff) || (mem->res->end > 0xffffff) ||
	(mem->res->start > mem->res->end) || (mem->speed > 1000))
	return -EINVAL;
    tcic_setw(TCIC_ADDR+2, TCIC_ADR2_INDREG | (psock << TCIC_SS_SHFT));
    addr = TCIC_MWIN(psock, mem->map);

    base = mem->res->start; len = mem->res->end - mem->res->start;
    if ((len & (len+1)) || (base & len)) return -EINVAL;
    if (len == 0x0fff)
	base = (base >> TCIC_MBASE_HA_SHFT) | TCIC_MBASE_4K_BIT;
    else
	base = (base | (len+1)>>1) >> TCIC_MBASE_HA_SHFT;
    tcic_setw(TCIC_ADDR, addr + TCIC_MBASE_X);
    tcic_setw(TCIC_DATA, base);
    
    mmap = mem->card_start - mem->res->start;
    mmap = (mmap >> TCIC_MMAP_CA_SHFT) & TCIC_MMAP_CA_MASK;
    if (mem->flags & MAP_ATTRIB) mmap |= TCIC_MMAP_REG;
    tcic_setw(TCIC_ADDR, addr + TCIC_MMAP_X);
    tcic_setw(TCIC_DATA, mmap);

    ctl  = TCIC_MCTL_QUIET | (psock << TCIC_MCTL_SS_SHFT);
    ctl |= to_cycles(mem->speed) & TCIC_MCTL_WSCNT_MASK;
    ctl |= (mem->flags & MAP_16BIT) ? 0 : TCIC_MCTL_B8;
    ctl |= (mem->flags & MAP_WRPROT) ? TCIC_MCTL_WP : 0;
    ctl |= (mem->flags & MAP_ACTIVE) ? TCIC_MCTL_ENA : 0;
    tcic_setw(TCIC_ADDR, addr + TCIC_MCTL_X);
    tcic_setw(TCIC_DATA, ctl);
    
    return 0;
} /* tcic_set_mem_map */

/*====================================================================*/

static int tcic_init(struct pcmcia_socket *s)
{
	int i;
	struct resource res = { .start = 0, .end = 0x1000 };
	pccard_io_map io = { 0, 0, 0, 0, 1 };
	pccard_mem_map mem = { .res = &res, };

	for (i = 0; i < 2; i++) {
		io.map = i;
		tcic_set_io_map(s, &io);
	}
	for (i = 0; i < 5; i++) {
		mem.map = i;
		tcic_set_mem_map(s, &mem);
	}
	return 0;
}

static struct pccard_operations tcic_operations = {
	.init		   = tcic_init,
	.get_status	   = tcic_get_status,
	.set_socket	   = tcic_set_socket,
	.set_io_map	   = tcic_set_io_map,
	.set_mem_map	   = tcic_set_mem_map,
};

/*====================================================================*/

module_init(init_tcic);
module_exit(exit_tcic);
OpenPOWER on IntegriCloud