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1da177e4 LT |
1 | /*====================================================================== |
2 | ||
3 | Device driver for Databook TCIC-2 PCMCIA controller | |
4 | ||
5 | tcic.c 1.111 2000/02/15 04:13:12 | |
6 | ||
7 | The contents of this file are subject to the Mozilla Public | |
8 | License Version 1.1 (the "License"); you may not use this file | |
9 | except in compliance with the License. You may obtain a copy of | |
10 | the License at http://www.mozilla.org/MPL/ | |
11 | ||
12 | Software distributed under the License is distributed on an "AS | |
13 | IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or | |
14 | implied. See the License for the specific language governing | |
15 | rights and limitations under the License. | |
16 | ||
17 | The initial developer of the original code is David A. Hinds | |
18 | <dahinds@users.sourceforge.net>. Portions created by David A. Hinds | |
19 | are Copyright (C) 1999 David A. Hinds. All Rights Reserved. | |
20 | ||
21 | Alternatively, the contents of this file may be used under the | |
22 | terms of the GNU General Public License version 2 (the "GPL"), in which | |
23 | case the provisions of the GPL are applicable instead of the | |
24 | above. If you wish to allow the use of your version of this file | |
25 | only under the terms of the GPL and not to allow others to use | |
26 | your version of this file under the MPL, indicate your decision | |
27 | by deleting the provisions above and replace them with the notice | |
28 | and other provisions required by the GPL. If you do not delete | |
29 | the provisions above, a recipient may use your version of this | |
30 | file under either the MPL or the GPL. | |
31 | ||
32 | ======================================================================*/ | |
33 | ||
34 | #include <linux/module.h> | |
35 | #include <linux/moduleparam.h> | |
36 | #include <linux/init.h> | |
37 | #include <linux/types.h> | |
38 | #include <linux/fcntl.h> | |
39 | #include <linux/string.h> | |
40 | #include <linux/errno.h> | |
41 | #include <linux/interrupt.h> | |
42 | #include <linux/slab.h> | |
43 | #include <linux/timer.h> | |
44 | #include <linux/ioport.h> | |
45 | #include <linux/delay.h> | |
46 | #include <linux/workqueue.h> | |
d052d1be | 47 | #include <linux/platform_device.h> |
1da177e4 LT |
48 | #include <linux/bitops.h> |
49 | ||
50 | #include <asm/io.h> | |
51 | #include <asm/system.h> | |
52 | ||
1da177e4 LT |
53 | #include <pcmcia/cs_types.h> |
54 | #include <pcmcia/cs.h> | |
55 | #include <pcmcia/ss.h> | |
56 | #include "tcic.h" | |
57 | ||
7d16b658 | 58 | #ifdef CONFIG_PCMCIA_DEBUG |
1da177e4 LT |
59 | static int pc_debug; |
60 | ||
61 | module_param(pc_debug, int, 0644); | |
62 | static const char version[] = | |
63 | "tcic.c 1.111 2000/02/15 04:13:12 (David Hinds)"; | |
64 | ||
65 | #define debug(lvl, fmt, arg...) do { \ | |
66 | if (pc_debug > (lvl)) \ | |
67 | printk(KERN_DEBUG "tcic: " fmt , ## arg); \ | |
68 | } while (0) | |
69 | #else | |
70 | #define debug(lvl, fmt, arg...) do { } while (0) | |
71 | #endif | |
72 | ||
73 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); | |
74 | MODULE_DESCRIPTION("Databook TCIC-2 PCMCIA socket driver"); | |
75 | MODULE_LICENSE("Dual MPL/GPL"); | |
76 | ||
77 | /*====================================================================*/ | |
78 | ||
79 | /* Parameters that can be set with 'insmod' */ | |
80 | ||
81 | /* The base port address of the TCIC-2 chip */ | |
82 | static unsigned long tcic_base = TCIC_BASE; | |
83 | ||
84 | /* Specify a socket number to ignore */ | |
85 | static int ignore = -1; | |
86 | ||
87 | /* Probe for safe interrupts? */ | |
88 | static int do_scan = 1; | |
89 | ||
90 | /* Bit map of interrupts to choose from */ | |
91 | static u_int irq_mask = 0xffff; | |
92 | static int irq_list[16]; | |
64a6f950 | 93 | static unsigned int irq_list_count; |
1da177e4 LT |
94 | |
95 | /* The card status change interrupt -- 0 means autoselect */ | |
96 | static int cs_irq; | |
97 | ||
98 | /* Poll status interval -- 0 means default to interrupt */ | |
99 | static int poll_interval; | |
100 | ||
101 | /* Delay for card status double-checking */ | |
102 | static int poll_quick = HZ/20; | |
103 | ||
104 | /* CCLK external clock time, in nanoseconds. 70 ns = 14.31818 MHz */ | |
105 | static int cycle_time = 70; | |
106 | ||
107 | module_param(tcic_base, ulong, 0444); | |
108 | module_param(ignore, int, 0444); | |
109 | module_param(do_scan, int, 0444); | |
110 | module_param(irq_mask, int, 0444); | |
111 | module_param_array(irq_list, int, &irq_list_count, 0444); | |
112 | module_param(cs_irq, int, 0444); | |
113 | module_param(poll_interval, int, 0444); | |
114 | module_param(poll_quick, int, 0444); | |
115 | module_param(cycle_time, int, 0444); | |
116 | ||
117 | /*====================================================================*/ | |
118 | ||
7d12e780 | 119 | static irqreturn_t tcic_interrupt(int irq, void *dev); |
1da177e4 LT |
120 | static void tcic_timer(u_long data); |
121 | static struct pccard_operations tcic_operations; | |
122 | ||
123 | struct tcic_socket { | |
124 | u_short psock; | |
125 | u_char last_sstat; | |
126 | u_char id; | |
127 | struct pcmcia_socket socket; | |
128 | }; | |
129 | ||
130 | static struct timer_list poll_timer; | |
131 | static int tcic_timer_pending; | |
132 | ||
133 | static int sockets; | |
134 | static struct tcic_socket socket_table[2]; | |
135 | ||
136 | /*====================================================================*/ | |
137 | ||
138 | /* Trick when selecting interrupts: the TCIC sktirq pin is supposed | |
139 | to map to irq 11, but is coded as 0 or 1 in the irq registers. */ | |
140 | #define TCIC_IRQ(x) ((x) ? (((x) == 11) ? 1 : (x)) : 15) | |
141 | ||
142 | #ifdef DEBUG_X | |
143 | static u_char tcic_getb(u_char reg) | |
144 | { | |
145 | u_char val = inb(tcic_base+reg); | |
146 | printk(KERN_DEBUG "tcic_getb(%#lx) = %#x\n", tcic_base+reg, val); | |
147 | return val; | |
148 | } | |
149 | ||
150 | static u_short tcic_getw(u_char reg) | |
151 | { | |
152 | u_short val = inw(tcic_base+reg); | |
153 | printk(KERN_DEBUG "tcic_getw(%#lx) = %#x\n", tcic_base+reg, val); | |
154 | return val; | |
155 | } | |
156 | ||
157 | static void tcic_setb(u_char reg, u_char data) | |
158 | { | |
159 | printk(KERN_DEBUG "tcic_setb(%#lx, %#x)\n", tcic_base+reg, data); | |
160 | outb(data, tcic_base+reg); | |
161 | } | |
162 | ||
163 | static void tcic_setw(u_char reg, u_short data) | |
164 | { | |
165 | printk(KERN_DEBUG "tcic_setw(%#lx, %#x)\n", tcic_base+reg, data); | |
166 | outw(data, tcic_base+reg); | |
167 | } | |
168 | #else | |
169 | #define tcic_getb(reg) inb(tcic_base+reg) | |
170 | #define tcic_getw(reg) inw(tcic_base+reg) | |
171 | #define tcic_setb(reg, data) outb(data, tcic_base+reg) | |
172 | #define tcic_setw(reg, data) outw(data, tcic_base+reg) | |
173 | #endif | |
174 | ||
175 | static void tcic_setl(u_char reg, u_int data) | |
176 | { | |
177 | #ifdef DEBUG_X | |
178 | printk(KERN_DEBUG "tcic_setl(%#x, %#lx)\n", tcic_base+reg, data); | |
179 | #endif | |
180 | outw(data & 0xffff, tcic_base+reg); | |
181 | outw(data >> 16, tcic_base+reg+2); | |
182 | } | |
183 | ||
1da177e4 LT |
184 | static void tcic_aux_setb(u_short reg, u_char data) |
185 | { | |
186 | u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg; | |
187 | tcic_setb(TCIC_MODE, mode); | |
188 | tcic_setb(TCIC_AUX, data); | |
189 | } | |
190 | ||
191 | static u_short tcic_aux_getw(u_short reg) | |
192 | { | |
193 | u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg; | |
194 | tcic_setb(TCIC_MODE, mode); | |
195 | return tcic_getw(TCIC_AUX); | |
196 | } | |
197 | ||
198 | static void tcic_aux_setw(u_short reg, u_short data) | |
199 | { | |
200 | u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg; | |
201 | tcic_setb(TCIC_MODE, mode); | |
202 | tcic_setw(TCIC_AUX, data); | |
203 | } | |
204 | ||
205 | /*====================================================================*/ | |
206 | ||
207 | /* Time conversion functions */ | |
208 | ||
209 | static int to_cycles(int ns) | |
210 | { | |
211 | if (ns < 14) | |
212 | return 0; | |
213 | else | |
214 | return 2*(ns-14)/cycle_time; | |
215 | } | |
216 | ||
217 | /*====================================================================*/ | |
218 | ||
219 | static volatile u_int irq_hits; | |
220 | ||
7d12e780 | 221 | static irqreturn_t __init tcic_irq_count(int irq, void *dev) |
1da177e4 LT |
222 | { |
223 | irq_hits++; | |
224 | return IRQ_HANDLED; | |
225 | } | |
226 | ||
227 | static u_int __init try_irq(int irq) | |
228 | { | |
229 | u_short cfg; | |
230 | ||
231 | irq_hits = 0; | |
232 | if (request_irq(irq, tcic_irq_count, 0, "irq scan", tcic_irq_count) != 0) | |
233 | return -1; | |
234 | mdelay(10); | |
235 | if (irq_hits) { | |
236 | free_irq(irq, tcic_irq_count); | |
237 | return -1; | |
238 | } | |
239 | ||
240 | /* Generate one interrupt */ | |
241 | cfg = TCIC_SYSCFG_AUTOBUSY | 0x0a00; | |
242 | tcic_aux_setw(TCIC_AUX_SYSCFG, cfg | TCIC_IRQ(irq)); | |
243 | tcic_setb(TCIC_IENA, TCIC_IENA_ERR | TCIC_IENA_CFG_HIGH); | |
244 | tcic_setb(TCIC_ICSR, TCIC_ICSR_ERR | TCIC_ICSR_JAM); | |
245 | ||
246 | udelay(1000); | |
247 | free_irq(irq, tcic_irq_count); | |
248 | ||
249 | /* Turn off interrupts */ | |
250 | tcic_setb(TCIC_IENA, TCIC_IENA_CFG_OFF); | |
251 | while (tcic_getb(TCIC_ICSR)) | |
252 | tcic_setb(TCIC_ICSR, TCIC_ICSR_JAM); | |
253 | tcic_aux_setw(TCIC_AUX_SYSCFG, cfg); | |
254 | ||
255 | return (irq_hits != 1); | |
256 | } | |
257 | ||
258 | static u_int __init irq_scan(u_int mask0) | |
259 | { | |
260 | u_int mask1; | |
261 | int i; | |
262 | ||
263 | #ifdef __alpha__ | |
264 | #define PIC 0x4d0 | |
265 | /* Don't probe level-triggered interrupts -- reserved for PCI */ | |
266 | int level_mask = inb_p(PIC) | (inb_p(PIC+1) << 8); | |
267 | if (level_mask) | |
268 | mask0 &= ~level_mask; | |
269 | #endif | |
270 | ||
271 | mask1 = 0; | |
272 | if (do_scan) { | |
273 | for (i = 0; i < 16; i++) | |
274 | if ((mask0 & (1 << i)) && (try_irq(i) == 0)) | |
275 | mask1 |= (1 << i); | |
276 | for (i = 0; i < 16; i++) | |
277 | if ((mask1 & (1 << i)) && (try_irq(i) != 0)) { | |
278 | mask1 ^= (1 << i); | |
279 | } | |
280 | } | |
281 | ||
282 | if (mask1) { | |
283 | printk("scanned"); | |
284 | } else { | |
285 | /* Fallback: just find interrupts that aren't in use */ | |
286 | for (i = 0; i < 16; i++) | |
287 | if ((mask0 & (1 << i)) && | |
288 | (request_irq(i, tcic_irq_count, 0, "x", tcic_irq_count) == 0)) { | |
289 | mask1 |= (1 << i); | |
290 | free_irq(i, tcic_irq_count); | |
291 | } | |
292 | printk("default"); | |
293 | } | |
294 | ||
295 | printk(") = "); | |
296 | for (i = 0; i < 16; i++) | |
297 | if (mask1 & (1<<i)) | |
298 | printk("%s%d", ((mask1 & ((1<<i)-1)) ? "," : ""), i); | |
299 | printk(" "); | |
300 | ||
301 | return mask1; | |
302 | } | |
303 | ||
304 | /*====================================================================== | |
305 | ||
306 | See if a card is present, powered up, in IO mode, and already | |
307 | bound to a (non-PCMCIA) Linux driver. | |
308 | ||
309 | We make an exception for cards that look like serial devices. | |
310 | ||
311 | ======================================================================*/ | |
312 | ||
313 | static int __init is_active(int s) | |
314 | { | |
315 | u_short scf1, ioctl, base, num; | |
316 | u_char pwr, sstat; | |
317 | u_int addr; | |
318 | ||
319 | tcic_setl(TCIC_ADDR, (s << TCIC_ADDR_SS_SHFT) | |
320 | | TCIC_ADDR_INDREG | TCIC_SCF1(s)); | |
321 | scf1 = tcic_getw(TCIC_DATA); | |
322 | pwr = tcic_getb(TCIC_PWR); | |
323 | sstat = tcic_getb(TCIC_SSTAT); | |
324 | addr = TCIC_IWIN(s, 0); | |
325 | tcic_setw(TCIC_ADDR, addr + TCIC_IBASE_X); | |
326 | base = tcic_getw(TCIC_DATA); | |
327 | tcic_setw(TCIC_ADDR, addr + TCIC_ICTL_X); | |
328 | ioctl = tcic_getw(TCIC_DATA); | |
329 | ||
330 | if (ioctl & TCIC_ICTL_TINY) | |
331 | num = 1; | |
332 | else { | |
333 | num = (base ^ (base-1)); | |
334 | base = base & (base-1); | |
335 | } | |
336 | ||
337 | if ((sstat & TCIC_SSTAT_CD) && (pwr & TCIC_PWR_VCC(s)) && | |
338 | (scf1 & TCIC_SCF1_IOSTS) && (ioctl & TCIC_ICTL_ENA) && | |
339 | ((base & 0xfeef) != 0x02e8)) { | |
340 | struct resource *res = request_region(base, num, "tcic-2"); | |
341 | if (!res) /* region is busy */ | |
342 | return 1; | |
343 | release_region(base, num); | |
344 | } | |
345 | ||
346 | return 0; | |
347 | } | |
348 | ||
349 | /*====================================================================== | |
350 | ||
351 | This returns the revision code for the specified socket. | |
352 | ||
353 | ======================================================================*/ | |
354 | ||
355 | static int __init get_tcic_id(void) | |
356 | { | |
357 | u_short id; | |
358 | ||
359 | tcic_aux_setw(TCIC_AUX_TEST, TCIC_TEST_DIAG); | |
360 | id = tcic_aux_getw(TCIC_AUX_ILOCK); | |
361 | id = (id & TCIC_ILOCKTEST_ID_MASK) >> TCIC_ILOCKTEST_ID_SH; | |
362 | tcic_aux_setw(TCIC_AUX_TEST, 0); | |
363 | return id; | |
364 | } | |
365 | ||
7a192ec3 ML |
366 | static int tcic_drv_pcmcia_suspend(struct platform_device *dev, |
367 | pm_message_t state) | |
368 | { | |
369 | return pcmcia_socket_dev_suspend(&dev->dev, state); | |
370 | } | |
371 | ||
372 | static int tcic_drv_pcmcia_resume(struct platform_device *dev) | |
373 | { | |
374 | return pcmcia_socket_dev_resume(&dev->dev); | |
375 | } | |
1da177e4 LT |
376 | /*====================================================================*/ |
377 | ||
7a192ec3 ML |
378 | static struct platform_driver tcic_driver = { |
379 | .driver = { | |
380 | .name = "tcic-pcmcia", | |
381 | .owner = THIS_MODULE, | |
382 | }, | |
383 | .suspend = tcic_drv_pcmcia_suspend, | |
384 | .resume = tcic_drv_pcmcia_resume, | |
1da177e4 LT |
385 | }; |
386 | ||
387 | static struct platform_device tcic_device = { | |
388 | .name = "tcic-pcmcia", | |
389 | .id = 0, | |
390 | }; | |
391 | ||
392 | ||
393 | static int __init init_tcic(void) | |
394 | { | |
395 | int i, sock, ret = 0; | |
396 | u_int mask, scan; | |
397 | ||
7a192ec3 | 398 | if (platform_driver_register(&tcic_driver)) |
1da177e4 LT |
399 | return -1; |
400 | ||
401 | printk(KERN_INFO "Databook TCIC-2 PCMCIA probe: "); | |
402 | sock = 0; | |
403 | ||
404 | if (!request_region(tcic_base, 16, "tcic-2")) { | |
405 | printk("could not allocate ports,\n "); | |
7a192ec3 | 406 | platform_driver_unregister(&tcic_driver); |
1da177e4 LT |
407 | return -ENODEV; |
408 | } | |
409 | else { | |
410 | tcic_setw(TCIC_ADDR, 0); | |
411 | if (tcic_getw(TCIC_ADDR) == 0) { | |
412 | tcic_setw(TCIC_ADDR, 0xc3a5); | |
413 | if (tcic_getw(TCIC_ADDR) == 0xc3a5) sock = 2; | |
414 | } | |
415 | if (sock == 0) { | |
416 | /* See if resetting the controller does any good */ | |
417 | tcic_setb(TCIC_SCTRL, TCIC_SCTRL_RESET); | |
418 | tcic_setb(TCIC_SCTRL, 0); | |
419 | tcic_setw(TCIC_ADDR, 0); | |
420 | if (tcic_getw(TCIC_ADDR) == 0) { | |
421 | tcic_setw(TCIC_ADDR, 0xc3a5); | |
422 | if (tcic_getw(TCIC_ADDR) == 0xc3a5) sock = 2; | |
423 | } | |
424 | } | |
425 | } | |
426 | if (sock == 0) { | |
427 | printk("not found.\n"); | |
428 | release_region(tcic_base, 16); | |
7a192ec3 | 429 | platform_driver_unregister(&tcic_driver); |
1da177e4 LT |
430 | return -ENODEV; |
431 | } | |
432 | ||
433 | sockets = 0; | |
434 | for (i = 0; i < sock; i++) { | |
435 | if ((i == ignore) || is_active(i)) continue; | |
436 | socket_table[sockets].psock = i; | |
437 | socket_table[sockets].id = get_tcic_id(); | |
438 | ||
439 | socket_table[sockets].socket.owner = THIS_MODULE; | |
440 | /* only 16-bit cards, memory windows must be size-aligned */ | |
441 | /* No PCI or CardBus support */ | |
442 | socket_table[sockets].socket.features = SS_CAP_PCCARD | SS_CAP_MEM_ALIGN; | |
443 | /* irq 14, 11, 10, 7, 6, 5, 4, 3 */ | |
444 | socket_table[sockets].socket.irq_mask = 0x4cf8; | |
445 | /* 4K minimum window size */ | |
446 | socket_table[sockets].socket.map_size = 0x1000; | |
447 | sockets++; | |
448 | } | |
449 | ||
450 | switch (socket_table[0].id) { | |
451 | case TCIC_ID_DB86082: | |
452 | printk("DB86082"); break; | |
453 | case TCIC_ID_DB86082A: | |
454 | printk("DB86082A"); break; | |
455 | case TCIC_ID_DB86084: | |
456 | printk("DB86084"); break; | |
457 | case TCIC_ID_DB86084A: | |
458 | printk("DB86084A"); break; | |
459 | case TCIC_ID_DB86072: | |
460 | printk("DB86072"); break; | |
461 | case TCIC_ID_DB86184: | |
462 | printk("DB86184"); break; | |
463 | case TCIC_ID_DB86082B: | |
464 | printk("DB86082B"); break; | |
465 | default: | |
466 | printk("Unknown ID 0x%02x", socket_table[0].id); | |
467 | } | |
468 | ||
469 | /* Set up polling */ | |
470 | poll_timer.function = &tcic_timer; | |
471 | poll_timer.data = 0; | |
472 | init_timer(&poll_timer); | |
473 | ||
474 | /* Build interrupt mask */ | |
475 | printk(", %d sockets\n" KERN_INFO " irq list (", sockets); | |
476 | if (irq_list_count == 0) | |
477 | mask = irq_mask; | |
478 | else | |
479 | for (i = mask = 0; i < irq_list_count; i++) | |
480 | mask |= (1<<irq_list[i]); | |
481 | ||
482 | /* irq 14, 11, 10, 7, 6, 5, 4, 3 */ | |
483 | mask &= 0x4cf8; | |
484 | /* Scan interrupts */ | |
485 | mask = irq_scan(mask); | |
486 | for (i=0;i<sockets;i++) | |
487 | socket_table[i].socket.irq_mask = mask; | |
488 | ||
489 | /* Check for only two interrupts available */ | |
490 | scan = (mask & (mask-1)); | |
491 | if (((scan & (scan-1)) == 0) && (poll_interval == 0)) | |
492 | poll_interval = HZ; | |
493 | ||
494 | if (poll_interval == 0) { | |
495 | /* Avoid irq 12 unless it is explicitly requested */ | |
496 | u_int cs_mask = mask & ((cs_irq) ? (1<<cs_irq) : ~(1<<12)); | |
497 | for (i = 15; i > 0; i--) | |
498 | if ((cs_mask & (1 << i)) && | |
499 | (request_irq(i, tcic_interrupt, 0, "tcic", | |
500 | tcic_interrupt) == 0)) | |
501 | break; | |
502 | cs_irq = i; | |
503 | if (cs_irq == 0) poll_interval = HZ; | |
504 | } | |
505 | ||
506 | if (socket_table[0].socket.irq_mask & (1 << 11)) | |
507 | printk("sktirq is irq 11, "); | |
508 | if (cs_irq != 0) | |
509 | printk("status change on irq %d\n", cs_irq); | |
510 | else | |
511 | printk("polled status, interval = %d ms\n", | |
512 | poll_interval * 1000 / HZ); | |
513 | ||
514 | for (i = 0; i < sockets; i++) { | |
515 | tcic_setw(TCIC_ADDR+2, socket_table[i].psock << TCIC_SS_SHFT); | |
516 | socket_table[i].last_sstat = tcic_getb(TCIC_SSTAT); | |
517 | } | |
518 | ||
519 | /* jump start interrupt handler, if needed */ | |
7d12e780 | 520 | tcic_interrupt(0, NULL); |
1da177e4 LT |
521 | |
522 | platform_device_register(&tcic_device); | |
523 | ||
524 | for (i = 0; i < sockets; i++) { | |
525 | socket_table[i].socket.ops = &tcic_operations; | |
526 | socket_table[i].socket.resource_ops = &pccard_nonstatic_ops; | |
87373318 | 527 | socket_table[i].socket.dev.parent = &tcic_device.dev; |
1da177e4 LT |
528 | ret = pcmcia_register_socket(&socket_table[i].socket); |
529 | if (ret && i) | |
530 | pcmcia_unregister_socket(&socket_table[0].socket); | |
531 | } | |
532 | ||
533 | return ret; | |
534 | ||
535 | return 0; | |
536 | ||
537 | } /* init_tcic */ | |
538 | ||
539 | /*====================================================================*/ | |
540 | ||
541 | static void __exit exit_tcic(void) | |
542 | { | |
543 | int i; | |
544 | ||
545 | del_timer_sync(&poll_timer); | |
546 | if (cs_irq != 0) { | |
547 | tcic_aux_setw(TCIC_AUX_SYSCFG, TCIC_SYSCFG_AUTOBUSY|0x0a00); | |
548 | free_irq(cs_irq, tcic_interrupt); | |
549 | } | |
550 | release_region(tcic_base, 16); | |
551 | ||
552 | for (i = 0; i < sockets; i++) { | |
553 | pcmcia_unregister_socket(&socket_table[i].socket); | |
554 | } | |
555 | ||
556 | platform_device_unregister(&tcic_device); | |
7a192ec3 | 557 | platform_driver_unregister(&tcic_driver); |
1da177e4 LT |
558 | } /* exit_tcic */ |
559 | ||
560 | /*====================================================================*/ | |
561 | ||
7d12e780 | 562 | static irqreturn_t tcic_interrupt(int irq, void *dev) |
1da177e4 LT |
563 | { |
564 | int i, quick = 0; | |
565 | u_char latch, sstat; | |
566 | u_short psock; | |
567 | u_int events; | |
568 | static volatile int active = 0; | |
569 | ||
570 | if (active) { | |
571 | printk(KERN_NOTICE "tcic: reentered interrupt handler!\n"); | |
572 | return IRQ_NONE; | |
573 | } else | |
574 | active = 1; | |
575 | ||
576 | debug(2, "tcic_interrupt()\n"); | |
577 | ||
578 | for (i = 0; i < sockets; i++) { | |
579 | psock = socket_table[i].psock; | |
580 | tcic_setl(TCIC_ADDR, (psock << TCIC_ADDR_SS_SHFT) | |
581 | | TCIC_ADDR_INDREG | TCIC_SCF1(psock)); | |
582 | sstat = tcic_getb(TCIC_SSTAT); | |
583 | latch = sstat ^ socket_table[psock].last_sstat; | |
584 | socket_table[i].last_sstat = sstat; | |
585 | if (tcic_getb(TCIC_ICSR) & TCIC_ICSR_CDCHG) { | |
586 | tcic_setb(TCIC_ICSR, TCIC_ICSR_CLEAR); | |
587 | quick = 1; | |
588 | } | |
589 | if (latch == 0) | |
590 | continue; | |
591 | events = (latch & TCIC_SSTAT_CD) ? SS_DETECT : 0; | |
592 | events |= (latch & TCIC_SSTAT_WP) ? SS_WRPROT : 0; | |
593 | if (tcic_getw(TCIC_DATA) & TCIC_SCF1_IOSTS) { | |
594 | events |= (latch & TCIC_SSTAT_LBAT1) ? SS_STSCHG : 0; | |
595 | } else { | |
596 | events |= (latch & TCIC_SSTAT_RDY) ? SS_READY : 0; | |
597 | events |= (latch & TCIC_SSTAT_LBAT1) ? SS_BATDEAD : 0; | |
598 | events |= (latch & TCIC_SSTAT_LBAT2) ? SS_BATWARN : 0; | |
599 | } | |
600 | if (events) { | |
601 | pcmcia_parse_events(&socket_table[i].socket, events); | |
602 | } | |
603 | } | |
604 | ||
605 | /* Schedule next poll, if needed */ | |
606 | if (((cs_irq == 0) || quick) && (!tcic_timer_pending)) { | |
607 | poll_timer.expires = jiffies + (quick ? poll_quick : poll_interval); | |
608 | add_timer(&poll_timer); | |
609 | tcic_timer_pending = 1; | |
610 | } | |
611 | active = 0; | |
612 | ||
613 | debug(2, "interrupt done\n"); | |
614 | return IRQ_HANDLED; | |
615 | } /* tcic_interrupt */ | |
616 | ||
617 | static void tcic_timer(u_long data) | |
618 | { | |
619 | debug(2, "tcic_timer()\n"); | |
620 | tcic_timer_pending = 0; | |
7d12e780 | 621 | tcic_interrupt(0, NULL); |
1da177e4 LT |
622 | } /* tcic_timer */ |
623 | ||
624 | /*====================================================================*/ | |
625 | ||
626 | static int tcic_get_status(struct pcmcia_socket *sock, u_int *value) | |
627 | { | |
628 | u_short psock = container_of(sock, struct tcic_socket, socket)->psock; | |
629 | u_char reg; | |
630 | ||
631 | tcic_setl(TCIC_ADDR, (psock << TCIC_ADDR_SS_SHFT) | |
632 | | TCIC_ADDR_INDREG | TCIC_SCF1(psock)); | |
633 | reg = tcic_getb(TCIC_SSTAT); | |
634 | *value = (reg & TCIC_SSTAT_CD) ? SS_DETECT : 0; | |
635 | *value |= (reg & TCIC_SSTAT_WP) ? SS_WRPROT : 0; | |
636 | if (tcic_getw(TCIC_DATA) & TCIC_SCF1_IOSTS) { | |
637 | *value |= (reg & TCIC_SSTAT_LBAT1) ? SS_STSCHG : 0; | |
638 | } else { | |
639 | *value |= (reg & TCIC_SSTAT_RDY) ? SS_READY : 0; | |
640 | *value |= (reg & TCIC_SSTAT_LBAT1) ? SS_BATDEAD : 0; | |
641 | *value |= (reg & TCIC_SSTAT_LBAT2) ? SS_BATWARN : 0; | |
642 | } | |
643 | reg = tcic_getb(TCIC_PWR); | |
644 | if (reg & (TCIC_PWR_VCC(psock)|TCIC_PWR_VPP(psock))) | |
645 | *value |= SS_POWERON; | |
646 | debug(1, "GetStatus(%d) = %#2.2x\n", psock, *value); | |
647 | return 0; | |
648 | } /* tcic_get_status */ | |
1da177e4 LT |
649 | |
650 | /*====================================================================*/ | |
651 | ||
652 | static int tcic_set_socket(struct pcmcia_socket *sock, socket_state_t *state) | |
653 | { | |
654 | u_short psock = container_of(sock, struct tcic_socket, socket)->psock; | |
655 | u_char reg; | |
656 | u_short scf1, scf2; | |
657 | ||
658 | debug(1, "SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, " | |
659 | "io_irq %d, csc_mask %#2.2x)\n", psock, state->flags, | |
660 | state->Vcc, state->Vpp, state->io_irq, state->csc_mask); | |
661 | tcic_setw(TCIC_ADDR+2, (psock << TCIC_SS_SHFT) | TCIC_ADR2_INDREG); | |
662 | ||
663 | reg = tcic_getb(TCIC_PWR); | |
664 | reg &= ~(TCIC_PWR_VCC(psock) | TCIC_PWR_VPP(psock)); | |
665 | ||
666 | if (state->Vcc == 50) { | |
667 | switch (state->Vpp) { | |
668 | case 0: reg |= TCIC_PWR_VCC(psock) | TCIC_PWR_VPP(psock); break; | |
669 | case 50: reg |= TCIC_PWR_VCC(psock); break; | |
670 | case 120: reg |= TCIC_PWR_VPP(psock); break; | |
671 | default: return -EINVAL; | |
672 | } | |
673 | } else if (state->Vcc != 0) | |
674 | return -EINVAL; | |
675 | ||
676 | if (reg != tcic_getb(TCIC_PWR)) | |
677 | tcic_setb(TCIC_PWR, reg); | |
678 | ||
679 | reg = TCIC_ILOCK_HOLD_CCLK | TCIC_ILOCK_CWAIT; | |
680 | if (state->flags & SS_OUTPUT_ENA) { | |
681 | tcic_setb(TCIC_SCTRL, TCIC_SCTRL_ENA); | |
682 | reg |= TCIC_ILOCK_CRESENA; | |
683 | } else | |
684 | tcic_setb(TCIC_SCTRL, 0); | |
685 | if (state->flags & SS_RESET) | |
686 | reg |= TCIC_ILOCK_CRESET; | |
687 | tcic_aux_setb(TCIC_AUX_ILOCK, reg); | |
688 | ||
689 | tcic_setw(TCIC_ADDR, TCIC_SCF1(psock)); | |
690 | scf1 = TCIC_SCF1_FINPACK; | |
691 | scf1 |= TCIC_IRQ(state->io_irq); | |
692 | if (state->flags & SS_IOCARD) { | |
693 | scf1 |= TCIC_SCF1_IOSTS; | |
694 | if (state->flags & SS_SPKR_ENA) | |
695 | scf1 |= TCIC_SCF1_SPKR; | |
696 | if (state->flags & SS_DMA_MODE) | |
697 | scf1 |= TCIC_SCF1_DREQ2 << TCIC_SCF1_DMA_SHIFT; | |
698 | } | |
699 | tcic_setw(TCIC_DATA, scf1); | |
700 | ||
701 | /* Some general setup stuff, and configure status interrupt */ | |
702 | reg = TCIC_WAIT_ASYNC | TCIC_WAIT_SENSE | to_cycles(250); | |
703 | tcic_aux_setb(TCIC_AUX_WCTL, reg); | |
704 | tcic_aux_setw(TCIC_AUX_SYSCFG, TCIC_SYSCFG_AUTOBUSY|0x0a00| | |
705 | TCIC_IRQ(cs_irq)); | |
706 | ||
707 | /* Card status change interrupt mask */ | |
708 | tcic_setw(TCIC_ADDR, TCIC_SCF2(psock)); | |
709 | scf2 = TCIC_SCF2_MALL; | |
710 | if (state->csc_mask & SS_DETECT) scf2 &= ~TCIC_SCF2_MCD; | |
711 | if (state->flags & SS_IOCARD) { | |
712 | if (state->csc_mask & SS_STSCHG) reg &= ~TCIC_SCF2_MLBAT1; | |
713 | } else { | |
714 | if (state->csc_mask & SS_BATDEAD) reg &= ~TCIC_SCF2_MLBAT1; | |
715 | if (state->csc_mask & SS_BATWARN) reg &= ~TCIC_SCF2_MLBAT2; | |
716 | if (state->csc_mask & SS_READY) reg &= ~TCIC_SCF2_MRDY; | |
717 | } | |
718 | tcic_setw(TCIC_DATA, scf2); | |
719 | /* For the ISA bus, the irq should be active-high totem-pole */ | |
720 | tcic_setb(TCIC_IENA, TCIC_IENA_CDCHG | TCIC_IENA_CFG_HIGH); | |
721 | ||
722 | return 0; | |
723 | } /* tcic_set_socket */ | |
724 | ||
725 | /*====================================================================*/ | |
726 | ||
727 | static int tcic_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io) | |
728 | { | |
729 | u_short psock = container_of(sock, struct tcic_socket, socket)->psock; | |
730 | u_int addr; | |
731 | u_short base, len, ioctl; | |
732 | ||
733 | debug(1, "SetIOMap(%d, %d, %#2.2x, %d ns, " | |
906da809 | 734 | "%#x-%#x)\n", psock, io->map, io->flags, |
1da177e4 LT |
735 | io->speed, io->start, io->stop); |
736 | if ((io->map > 1) || (io->start > 0xffff) || (io->stop > 0xffff) || | |
737 | (io->stop < io->start)) return -EINVAL; | |
738 | tcic_setw(TCIC_ADDR+2, TCIC_ADR2_INDREG | (psock << TCIC_SS_SHFT)); | |
739 | addr = TCIC_IWIN(psock, io->map); | |
740 | ||
741 | base = io->start; len = io->stop - io->start; | |
742 | /* Check to see that len+1 is power of two, etc */ | |
743 | if ((len & (len+1)) || (base & len)) return -EINVAL; | |
744 | base |= (len+1)>>1; | |
745 | tcic_setw(TCIC_ADDR, addr + TCIC_IBASE_X); | |
746 | tcic_setw(TCIC_DATA, base); | |
747 | ||
748 | ioctl = (psock << TCIC_ICTL_SS_SHFT); | |
749 | ioctl |= (len == 0) ? TCIC_ICTL_TINY : 0; | |
750 | ioctl |= (io->flags & MAP_ACTIVE) ? TCIC_ICTL_ENA : 0; | |
751 | ioctl |= to_cycles(io->speed) & TCIC_ICTL_WSCNT_MASK; | |
752 | if (!(io->flags & MAP_AUTOSZ)) { | |
753 | ioctl |= TCIC_ICTL_QUIET; | |
754 | ioctl |= (io->flags & MAP_16BIT) ? TCIC_ICTL_BW_16 : TCIC_ICTL_BW_8; | |
755 | } | |
756 | tcic_setw(TCIC_ADDR, addr + TCIC_ICTL_X); | |
757 | tcic_setw(TCIC_DATA, ioctl); | |
758 | ||
759 | return 0; | |
760 | } /* tcic_set_io_map */ | |
761 | ||
762 | /*====================================================================*/ | |
763 | ||
764 | static int tcic_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem) | |
765 | { | |
766 | u_short psock = container_of(sock, struct tcic_socket, socket)->psock; | |
767 | u_short addr, ctl; | |
768 | u_long base, len, mmap; | |
769 | ||
770 | debug(1, "SetMemMap(%d, %d, %#2.2x, %d ns, " | |
490ab72a GKH |
771 | "%#llx-%#llx, %#x)\n", psock, mem->map, mem->flags, |
772 | mem->speed, (unsigned long long)mem->res->start, | |
773 | (unsigned long long)mem->res->end, mem->card_start); | |
1da177e4 LT |
774 | if ((mem->map > 3) || (mem->card_start > 0x3ffffff) || |
775 | (mem->res->start > 0xffffff) || (mem->res->end > 0xffffff) || | |
776 | (mem->res->start > mem->res->end) || (mem->speed > 1000)) | |
777 | return -EINVAL; | |
778 | tcic_setw(TCIC_ADDR+2, TCIC_ADR2_INDREG | (psock << TCIC_SS_SHFT)); | |
779 | addr = TCIC_MWIN(psock, mem->map); | |
780 | ||
781 | base = mem->res->start; len = mem->res->end - mem->res->start; | |
782 | if ((len & (len+1)) || (base & len)) return -EINVAL; | |
783 | if (len == 0x0fff) | |
784 | base = (base >> TCIC_MBASE_HA_SHFT) | TCIC_MBASE_4K_BIT; | |
785 | else | |
786 | base = (base | (len+1)>>1) >> TCIC_MBASE_HA_SHFT; | |
787 | tcic_setw(TCIC_ADDR, addr + TCIC_MBASE_X); | |
788 | tcic_setw(TCIC_DATA, base); | |
789 | ||
790 | mmap = mem->card_start - mem->res->start; | |
791 | mmap = (mmap >> TCIC_MMAP_CA_SHFT) & TCIC_MMAP_CA_MASK; | |
792 | if (mem->flags & MAP_ATTRIB) mmap |= TCIC_MMAP_REG; | |
793 | tcic_setw(TCIC_ADDR, addr + TCIC_MMAP_X); | |
794 | tcic_setw(TCIC_DATA, mmap); | |
795 | ||
796 | ctl = TCIC_MCTL_QUIET | (psock << TCIC_MCTL_SS_SHFT); | |
797 | ctl |= to_cycles(mem->speed) & TCIC_MCTL_WSCNT_MASK; | |
798 | ctl |= (mem->flags & MAP_16BIT) ? 0 : TCIC_MCTL_B8; | |
799 | ctl |= (mem->flags & MAP_WRPROT) ? TCIC_MCTL_WP : 0; | |
800 | ctl |= (mem->flags & MAP_ACTIVE) ? TCIC_MCTL_ENA : 0; | |
801 | tcic_setw(TCIC_ADDR, addr + TCIC_MCTL_X); | |
802 | tcic_setw(TCIC_DATA, ctl); | |
803 | ||
804 | return 0; | |
805 | } /* tcic_set_mem_map */ | |
806 | ||
807 | /*====================================================================*/ | |
808 | ||
809 | static int tcic_init(struct pcmcia_socket *s) | |
810 | { | |
811 | int i; | |
812 | struct resource res = { .start = 0, .end = 0x1000 }; | |
813 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
814 | pccard_mem_map mem = { .res = &res, }; | |
815 | ||
816 | for (i = 0; i < 2; i++) { | |
817 | io.map = i; | |
818 | tcic_set_io_map(s, &io); | |
819 | } | |
820 | for (i = 0; i < 5; i++) { | |
821 | mem.map = i; | |
822 | tcic_set_mem_map(s, &mem); | |
823 | } | |
824 | return 0; | |
825 | } | |
826 | ||
827 | static struct pccard_operations tcic_operations = { | |
828 | .init = tcic_init, | |
829 | .get_status = tcic_get_status, | |
1da177e4 LT |
830 | .set_socket = tcic_set_socket, |
831 | .set_io_map = tcic_set_io_map, | |
832 | .set_mem_map = tcic_set_mem_map, | |
833 | }; | |
834 | ||
835 | /*====================================================================*/ | |
836 | ||
837 | module_init(init_tcic); | |
838 | module_exit(exit_tcic); |