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1da177e4 LT |
1 | /* |
2 | * vrc4171_card.c, NEC VRC4171 Card Controller driver for Socket Services. | |
3 | * | |
4 | * Copyright (C) 2003-2005 Yoichi Yuasa <yuasa@hh.iij4u.or.jp> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | #include <linux/init.h> | |
21 | #include <linux/ioport.h> | |
22 | #include <linux/interrupt.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/spinlock.h> | |
25 | #include <linux/sched.h> | |
26 | #include <linux/types.h> | |
27 | ||
28 | #include <asm/io.h> | |
29 | ||
30 | #include <pcmcia/ss.h> | |
31 | ||
32 | #include "i82365.h" | |
33 | ||
34 | MODULE_DESCRIPTION("NEC VRC4171 Card Controllers driver for Socket Services"); | |
35 | MODULE_AUTHOR("Yoichi Yuasa <yuasa@hh.iij4u.or.jp>"); | |
36 | MODULE_LICENSE("GPL"); | |
37 | ||
38 | #define CARD_MAX_SLOTS 2 | |
39 | #define CARD_SLOTA 0 | |
40 | #define CARD_SLOTB 1 | |
41 | #define CARD_SLOTB_OFFSET 0x40 | |
42 | ||
43 | #define CARD_MEM_START 0x10000000 | |
44 | #define CARD_MEM_END 0x13ffffff | |
45 | #define CARD_MAX_MEM_OFFSET 0x3ffffff | |
46 | #define CARD_MAX_MEM_SPEED 1000 | |
47 | ||
48 | #define CARD_CONTROLLER_INDEX 0x03e0 | |
49 | #define CARD_CONTROLLER_DATA 0x03e1 | |
50 | /* Power register */ | |
51 | #define VPP_GET_VCC 0x01 | |
52 | #define POWER_ENABLE 0x10 | |
53 | #define CARD_VOLTAGE_SENSE 0x1f | |
54 | #define VCC_3VORXV_CAPABLE 0x00 | |
55 | #define VCC_XV_ONLY 0x01 | |
56 | #define VCC_3V_CAPABLE 0x02 | |
57 | #define VCC_5V_ONLY 0x03 | |
58 | #define CARD_VOLTAGE_SELECT 0x2f | |
59 | #define VCC_3V 0x01 | |
60 | #define VCC_5V 0x00 | |
61 | #define VCC_XV 0x02 | |
62 | #define VCC_STATUS_3V 0x02 | |
63 | #define VCC_STATUS_5V 0x01 | |
64 | #define VCC_STATUS_XV 0x03 | |
65 | #define GLOBAL_CONTROL 0x1e | |
66 | #define EXWRBK 0x04 | |
67 | #define IRQPM_EN 0x08 | |
68 | #define CLRPMIRQ 0x10 | |
69 | ||
70 | #define INTERRUPT_STATUS 0x05fa | |
71 | #define IRQ_A 0x02 | |
72 | #define IRQ_B 0x04 | |
73 | ||
74 | #define CONFIGURATION1 0x05fe | |
75 | #define SLOTB_CONFIG 0xc000 | |
76 | #define SLOTB_NONE 0x0000 | |
77 | #define SLOTB_PCCARD 0x4000 | |
78 | #define SLOTB_CF 0x8000 | |
79 | #define SLOTB_FLASHROM 0xc000 | |
80 | ||
81 | #define CARD_CONTROLLER_START CARD_CONTROLLER_INDEX | |
82 | #define CARD_CONTROLLER_END CARD_CONTROLLER_DATA | |
83 | ||
84 | #define IO_MAX_MAPS 2 | |
85 | #define MEM_MAX_MAPS 5 | |
86 | ||
87 | typedef enum { | |
88 | SLOT_PROBE = 0, | |
89 | SLOT_NOPROBE_IO, | |
90 | SLOT_NOPROBE_MEM, | |
91 | SLOT_NOPROBE_ALL, | |
92 | SLOT_INITIALIZED, | |
93 | } vrc4171_slot_t; | |
94 | ||
95 | typedef enum { | |
96 | SLOTB_IS_NONE, | |
97 | SLOTB_IS_PCCARD, | |
98 | SLOTB_IS_CF, | |
99 | SLOTB_IS_FLASHROM, | |
100 | } vrc4171_slotb_t; | |
101 | ||
102 | typedef struct vrc4171_socket { | |
103 | vrc4171_slot_t slot; | |
104 | struct pcmcia_socket pcmcia_socket; | |
105 | char name[24]; | |
106 | int csc_irq; | |
107 | int io_irq; | |
108 | } vrc4171_socket_t; | |
109 | ||
110 | static vrc4171_socket_t vrc4171_sockets[CARD_MAX_SLOTS]; | |
111 | static vrc4171_slotb_t vrc4171_slotb = SLOTB_IS_NONE; | |
112 | static char vrc4171_card_name[] = "NEC VRC4171 Card Controller"; | |
113 | static unsigned int vrc4171_irq; | |
114 | static uint16_t vrc4171_irq_mask = 0xdeb8; | |
115 | ||
116 | static struct resource vrc4171_card_resource[3] = { | |
117 | { .name = vrc4171_card_name, | |
118 | .start = CARD_CONTROLLER_START, | |
119 | .end = CARD_CONTROLLER_END, | |
120 | .flags = IORESOURCE_IO, }, | |
121 | { .name = vrc4171_card_name, | |
122 | .start = INTERRUPT_STATUS, | |
123 | .end = INTERRUPT_STATUS, | |
124 | .flags = IORESOURCE_IO, }, | |
125 | { .name = vrc4171_card_name, | |
126 | .start = CONFIGURATION1, | |
127 | .end = CONFIGURATION1, | |
128 | .flags = IORESOURCE_IO, }, | |
129 | }; | |
130 | ||
131 | static struct platform_device vrc4171_card_device = { | |
132 | .name = vrc4171_card_name, | |
133 | .id = 0, | |
134 | .num_resources = 3, | |
135 | .resource = vrc4171_card_resource, | |
136 | }; | |
137 | ||
138 | static inline uint16_t vrc4171_get_irq_status(void) | |
139 | { | |
140 | return inw(INTERRUPT_STATUS); | |
141 | } | |
142 | ||
143 | static inline void vrc4171_set_multifunction_pin(vrc4171_slotb_t config) | |
144 | { | |
145 | uint16_t config1; | |
146 | ||
147 | config1 = inw(CONFIGURATION1); | |
148 | config1 &= ~SLOTB_CONFIG; | |
149 | ||
150 | switch (config) { | |
151 | case SLOTB_IS_NONE: | |
152 | config1 |= SLOTB_NONE; | |
153 | break; | |
154 | case SLOTB_IS_PCCARD: | |
155 | config1 |= SLOTB_PCCARD; | |
156 | break; | |
157 | case SLOTB_IS_CF: | |
158 | config1 |= SLOTB_CF; | |
159 | break; | |
160 | case SLOTB_IS_FLASHROM: | |
161 | config1 |= SLOTB_FLASHROM; | |
162 | break; | |
163 | default: | |
164 | break; | |
165 | } | |
166 | ||
167 | outw(config1, CONFIGURATION1); | |
168 | } | |
169 | ||
170 | static inline uint8_t exca_read_byte(int slot, uint8_t index) | |
171 | { | |
172 | if (slot == CARD_SLOTB) | |
173 | index += CARD_SLOTB_OFFSET; | |
174 | ||
175 | outb(index, CARD_CONTROLLER_INDEX); | |
176 | return inb(CARD_CONTROLLER_DATA); | |
177 | } | |
178 | ||
179 | static inline uint16_t exca_read_word(int slot, uint8_t index) | |
180 | { | |
181 | uint16_t data; | |
182 | ||
183 | if (slot == CARD_SLOTB) | |
184 | index += CARD_SLOTB_OFFSET; | |
185 | ||
186 | outb(index++, CARD_CONTROLLER_INDEX); | |
187 | data = inb(CARD_CONTROLLER_DATA); | |
188 | ||
189 | outb(index, CARD_CONTROLLER_INDEX); | |
190 | data |= ((uint16_t)inb(CARD_CONTROLLER_DATA)) << 8; | |
191 | ||
192 | return data; | |
193 | } | |
194 | ||
195 | static inline uint8_t exca_write_byte(int slot, uint8_t index, uint8_t data) | |
196 | { | |
197 | if (slot == CARD_SLOTB) | |
198 | index += CARD_SLOTB_OFFSET; | |
199 | ||
200 | outb(index, CARD_CONTROLLER_INDEX); | |
201 | outb(data, CARD_CONTROLLER_DATA); | |
202 | ||
203 | return data; | |
204 | } | |
205 | ||
206 | static inline uint16_t exca_write_word(int slot, uint8_t index, uint16_t data) | |
207 | { | |
208 | if (slot == CARD_SLOTB) | |
209 | index += CARD_SLOTB_OFFSET; | |
210 | ||
211 | outb(index++, CARD_CONTROLLER_INDEX); | |
212 | outb(data, CARD_CONTROLLER_DATA); | |
213 | ||
214 | outb(index, CARD_CONTROLLER_INDEX); | |
215 | outb((uint8_t)(data >> 8), CARD_CONTROLLER_DATA); | |
216 | ||
217 | return data; | |
218 | } | |
219 | ||
220 | static inline int search_nonuse_irq(void) | |
221 | { | |
222 | int i; | |
223 | ||
224 | for (i = 0; i < 16; i++) { | |
225 | if (vrc4171_irq_mask & (1 << i)) { | |
226 | vrc4171_irq_mask &= ~(1 << i); | |
227 | return i; | |
228 | } | |
229 | } | |
230 | ||
231 | return -1; | |
232 | } | |
233 | ||
234 | static int pccard_init(struct pcmcia_socket *sock) | |
235 | { | |
236 | vrc4171_socket_t *socket; | |
237 | unsigned int slot; | |
238 | ||
239 | sock->features |= SS_CAP_PCCARD | SS_CAP_PAGE_REGS; | |
240 | sock->irq_mask = 0; | |
241 | sock->map_size = 0x1000; | |
242 | sock->pci_irq = vrc4171_irq; | |
243 | ||
244 | slot = sock->sock; | |
245 | socket = &vrc4171_sockets[slot]; | |
246 | socket->csc_irq = search_nonuse_irq(); | |
247 | socket->io_irq = search_nonuse_irq(); | |
248 | ||
249 | return 0; | |
250 | } | |
251 | ||
252 | static int pccard_get_status(struct pcmcia_socket *sock, u_int *value) | |
253 | { | |
254 | unsigned int slot; | |
255 | uint8_t status, sense; | |
256 | u_int val = 0; | |
257 | ||
258 | if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || value == NULL) | |
259 | return -EINVAL; | |
260 | ||
261 | slot = sock->sock; | |
262 | ||
263 | status = exca_read_byte(slot, I365_STATUS); | |
264 | if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) { | |
265 | if (status & I365_CS_STSCHG) | |
266 | val |= SS_STSCHG; | |
267 | } else { | |
268 | if (!(status & I365_CS_BVD1)) | |
269 | val |= SS_BATDEAD; | |
270 | else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1) | |
271 | val |= SS_BATWARN; | |
272 | } | |
273 | if ((status & I365_CS_DETECT) == I365_CS_DETECT) | |
274 | val |= SS_DETECT; | |
275 | if (status & I365_CS_WRPROT) | |
276 | val |= SS_WRPROT; | |
277 | if (status & I365_CS_READY) | |
278 | val |= SS_READY; | |
279 | if (status & I365_CS_POWERON) | |
280 | val |= SS_POWERON; | |
281 | ||
282 | sense = exca_read_byte(slot, CARD_VOLTAGE_SENSE); | |
283 | switch (sense) { | |
284 | case VCC_3VORXV_CAPABLE: | |
285 | val |= SS_3VCARD | SS_XVCARD; | |
286 | break; | |
287 | case VCC_XV_ONLY: | |
288 | val |= SS_XVCARD; | |
289 | break; | |
290 | case VCC_3V_CAPABLE: | |
291 | val |= SS_3VCARD; | |
292 | break; | |
293 | default: | |
294 | /* 5V only */ | |
295 | break; | |
296 | } | |
297 | ||
298 | *value = val; | |
299 | ||
300 | return 0; | |
301 | } | |
302 | ||
303 | static inline u_char get_Vcc_value(uint8_t voltage) | |
304 | { | |
305 | switch (voltage) { | |
306 | case VCC_STATUS_3V: | |
307 | return 33; | |
308 | case VCC_STATUS_5V: | |
309 | return 50; | |
310 | default: | |
311 | break; | |
312 | } | |
313 | ||
314 | return 0; | |
315 | } | |
316 | ||
317 | static inline u_char get_Vpp_value(uint8_t power, u_char Vcc) | |
318 | { | |
319 | if ((power & 0x03) == 0x01 || (power & 0x03) == 0x02) | |
320 | return Vcc; | |
321 | ||
322 | return 0; | |
323 | } | |
324 | ||
325 | static int pccard_get_socket(struct pcmcia_socket *sock, socket_state_t *state) | |
326 | { | |
327 | unsigned int slot; | |
328 | uint8_t power, voltage, control, cscint; | |
329 | ||
330 | if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || state == NULL) | |
331 | return -EINVAL; | |
332 | ||
333 | slot = sock->sock; | |
334 | ||
335 | power = exca_read_byte(slot, I365_POWER); | |
336 | voltage = exca_read_byte(slot, CARD_VOLTAGE_SELECT); | |
337 | ||
338 | state->Vcc = get_Vcc_value(voltage); | |
339 | state->Vpp = get_Vpp_value(power, state->Vcc); | |
340 | ||
341 | state->flags = 0; | |
342 | if (power & POWER_ENABLE) | |
343 | state->flags |= SS_PWR_AUTO; | |
344 | if (power & I365_PWR_OUT) | |
345 | state->flags |= SS_OUTPUT_ENA; | |
346 | ||
347 | control = exca_read_byte(slot, I365_INTCTL); | |
348 | if (control & I365_PC_IOCARD) | |
349 | state->flags |= SS_IOCARD; | |
350 | if (!(control & I365_PC_RESET)) | |
351 | state->flags |= SS_RESET; | |
352 | ||
353 | cscint = exca_read_byte(slot, I365_CSCINT); | |
354 | state->csc_mask = 0; | |
355 | if (state->flags & SS_IOCARD) { | |
356 | if (cscint & I365_CSC_STSCHG) | |
357 | state->flags |= SS_STSCHG; | |
358 | } else { | |
359 | if (cscint & I365_CSC_BVD1) | |
360 | state->csc_mask |= SS_BATDEAD; | |
361 | if (cscint & I365_CSC_BVD2) | |
362 | state->csc_mask |= SS_BATWARN; | |
363 | } | |
364 | if (cscint & I365_CSC_READY) | |
365 | state->csc_mask |= SS_READY; | |
366 | if (cscint & I365_CSC_DETECT) | |
367 | state->csc_mask |= SS_DETECT; | |
368 | ||
369 | return 0; | |
370 | } | |
371 | ||
372 | static inline uint8_t set_Vcc_value(u_char Vcc) | |
373 | { | |
374 | switch (Vcc) { | |
375 | case 33: | |
376 | return VCC_3V; | |
377 | case 50: | |
378 | return VCC_5V; | |
379 | } | |
380 | ||
381 | /* Small voltage is chosen for safety. */ | |
382 | return VCC_3V; | |
383 | } | |
384 | ||
385 | static int pccard_set_socket(struct pcmcia_socket *sock, socket_state_t *state) | |
386 | { | |
387 | vrc4171_socket_t *socket; | |
388 | unsigned int slot; | |
389 | uint8_t voltage, power, control, cscint; | |
390 | ||
391 | if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || | |
392 | (state->Vpp != state->Vcc && state->Vpp != 0) || | |
393 | (state->Vcc != 50 && state->Vcc != 33 && state->Vcc != 0)) | |
394 | return -EINVAL; | |
395 | ||
396 | slot = sock->sock; | |
397 | socket = &vrc4171_sockets[slot]; | |
398 | ||
399 | spin_lock_irq(&sock->lock); | |
400 | ||
401 | voltage = set_Vcc_value(state->Vcc); | |
402 | exca_write_byte(slot, CARD_VOLTAGE_SELECT, voltage); | |
403 | ||
404 | power = POWER_ENABLE; | |
405 | if (state->Vpp == state->Vcc) | |
406 | power |= VPP_GET_VCC; | |
407 | if (state->flags & SS_OUTPUT_ENA) | |
408 | power |= I365_PWR_OUT; | |
409 | exca_write_byte(slot, I365_POWER, power); | |
410 | ||
411 | control = 0; | |
412 | if (state->io_irq != 0) | |
413 | control |= socket->io_irq; | |
414 | if (state->flags & SS_IOCARD) | |
415 | control |= I365_PC_IOCARD; | |
416 | if (state->flags & SS_RESET) | |
417 | control &= ~I365_PC_RESET; | |
418 | else | |
419 | control |= I365_PC_RESET; | |
420 | exca_write_byte(slot, I365_INTCTL, control); | |
421 | ||
422 | cscint = 0; | |
423 | exca_write_byte(slot, I365_CSCINT, cscint); | |
424 | exca_read_byte(slot, I365_CSC); /* clear CardStatus change */ | |
425 | if (state->csc_mask != 0) | |
426 | cscint |= socket->csc_irq << 8; | |
427 | if (state->flags & SS_IOCARD) { | |
428 | if (state->csc_mask & SS_STSCHG) | |
429 | cscint |= I365_CSC_STSCHG; | |
430 | } else { | |
431 | if (state->csc_mask & SS_BATDEAD) | |
432 | cscint |= I365_CSC_BVD1; | |
433 | if (state->csc_mask & SS_BATWARN) | |
434 | cscint |= I365_CSC_BVD2; | |
435 | } | |
436 | if (state->csc_mask & SS_READY) | |
437 | cscint |= I365_CSC_READY; | |
438 | if (state->csc_mask & SS_DETECT) | |
439 | cscint |= I365_CSC_DETECT; | |
440 | exca_write_byte(slot, I365_CSCINT, cscint); | |
441 | ||
442 | spin_unlock_irq(&sock->lock); | |
443 | ||
444 | return 0; | |
445 | } | |
446 | ||
447 | static int pccard_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io) | |
448 | { | |
449 | unsigned int slot; | |
450 | uint8_t ioctl, addrwin; | |
451 | u_char map; | |
452 | ||
453 | if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || | |
454 | io == NULL || io->map >= IO_MAX_MAPS || | |
455 | io->start > 0xffff || io->stop > 0xffff || io->start > io->stop) | |
456 | return -EINVAL; | |
457 | ||
458 | slot = sock->sock; | |
459 | map = io->map; | |
460 | ||
461 | addrwin = exca_read_byte(slot, I365_ADDRWIN); | |
462 | if (addrwin & I365_ENA_IO(map)) { | |
463 | addrwin &= ~I365_ENA_IO(map); | |
464 | exca_write_byte(slot, I365_ADDRWIN, addrwin); | |
465 | } | |
466 | ||
467 | exca_write_word(slot, I365_IO(map)+I365_W_START, io->start); | |
468 | exca_write_word(slot, I365_IO(map)+I365_W_STOP, io->stop); | |
469 | ||
470 | ioctl = 0; | |
471 | if (io->speed > 0) | |
472 | ioctl |= I365_IOCTL_WAIT(map); | |
473 | if (io->flags & MAP_16BIT) | |
474 | ioctl |= I365_IOCTL_16BIT(map); | |
475 | if (io->flags & MAP_AUTOSZ) | |
476 | ioctl |= I365_IOCTL_IOCS16(map); | |
477 | if (io->flags & MAP_0WS) | |
478 | ioctl |= I365_IOCTL_0WS(map); | |
479 | exca_write_byte(slot, I365_IOCTL, ioctl); | |
480 | ||
481 | if (io->flags & MAP_ACTIVE) { | |
482 | addrwin |= I365_ENA_IO(map); | |
483 | exca_write_byte(slot, I365_ADDRWIN, addrwin); | |
484 | } | |
485 | ||
486 | return 0; | |
487 | } | |
488 | ||
489 | static int pccard_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem) | |
490 | { | |
491 | unsigned int slot; | |
492 | uint16_t start, stop, offset; | |
493 | uint8_t addrwin; | |
494 | u_char map; | |
495 | ||
496 | if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || | |
497 | mem == NULL || mem->map >= MEM_MAX_MAPS || | |
498 | mem->res->start < CARD_MEM_START || mem->res->start > CARD_MEM_END || | |
499 | mem->res->end < CARD_MEM_START || mem->res->end > CARD_MEM_END || | |
500 | mem->res->start > mem->res->end || | |
501 | mem->card_start > CARD_MAX_MEM_OFFSET || | |
502 | mem->speed > CARD_MAX_MEM_SPEED) | |
503 | return -EINVAL; | |
504 | ||
505 | slot = sock->sock; | |
506 | map = mem->map; | |
507 | ||
508 | addrwin = exca_read_byte(slot, I365_ADDRWIN); | |
509 | if (addrwin & I365_ENA_MEM(map)) { | |
510 | addrwin &= ~I365_ENA_MEM(map); | |
511 | exca_write_byte(slot, I365_ADDRWIN, addrwin); | |
512 | } | |
513 | ||
514 | start = (mem->res->start >> 12) & 0x3fff; | |
515 | if (mem->flags & MAP_16BIT) | |
516 | start |= I365_MEM_16BIT; | |
517 | exca_write_word(slot, I365_MEM(map)+I365_W_START, start); | |
518 | ||
519 | stop = (mem->res->end >> 12) & 0x3fff; | |
520 | switch (mem->speed) { | |
521 | case 0: | |
522 | break; | |
523 | case 1: | |
524 | stop |= I365_MEM_WS0; | |
525 | break; | |
526 | case 2: | |
527 | stop |= I365_MEM_WS1; | |
528 | break; | |
529 | default: | |
530 | stop |= I365_MEM_WS0 | I365_MEM_WS1; | |
531 | break; | |
532 | } | |
533 | exca_write_word(slot, I365_MEM(map)+I365_W_STOP, stop); | |
534 | ||
535 | offset = (mem->card_start >> 12) & 0x3fff; | |
536 | if (mem->flags & MAP_ATTRIB) | |
537 | offset |= I365_MEM_REG; | |
538 | if (mem->flags & MAP_WRPROT) | |
539 | offset |= I365_MEM_WRPROT; | |
540 | exca_write_word(slot, I365_MEM(map)+I365_W_OFF, offset); | |
541 | ||
542 | if (mem->flags & MAP_ACTIVE) { | |
543 | addrwin |= I365_ENA_MEM(map); | |
544 | exca_write_byte(slot, I365_ADDRWIN, addrwin); | |
545 | } | |
546 | ||
547 | return 0; | |
548 | } | |
549 | ||
550 | static struct pccard_operations vrc4171_pccard_operations = { | |
551 | .init = pccard_init, | |
552 | .get_status = pccard_get_status, | |
553 | .get_socket = pccard_get_socket, | |
554 | .set_socket = pccard_set_socket, | |
555 | .set_io_map = pccard_set_io_map, | |
556 | .set_mem_map = pccard_set_mem_map, | |
557 | }; | |
558 | ||
559 | static inline unsigned int get_events(int slot) | |
560 | { | |
561 | unsigned int events = 0; | |
562 | uint8_t status, csc; | |
563 | ||
564 | status = exca_read_byte(slot, I365_STATUS); | |
565 | csc = exca_read_byte(slot, I365_CSC); | |
566 | ||
567 | if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) { | |
568 | if ((csc & I365_CSC_STSCHG) && (status & I365_CS_STSCHG)) | |
569 | events |= SS_STSCHG; | |
570 | } else { | |
571 | if (csc & (I365_CSC_BVD1 | I365_CSC_BVD2)) { | |
572 | if (!(status & I365_CS_BVD1)) | |
573 | events |= SS_BATDEAD; | |
574 | else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1) | |
575 | events |= SS_BATWARN; | |
576 | } | |
577 | } | |
578 | if ((csc & I365_CSC_READY) && (status & I365_CS_READY)) | |
579 | events |= SS_READY; | |
580 | if ((csc & I365_CSC_DETECT) && ((status & I365_CS_DETECT) == I365_CS_DETECT)) | |
581 | events |= SS_DETECT; | |
582 | ||
583 | return events; | |
584 | } | |
585 | ||
586 | static irqreturn_t pccard_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
587 | { | |
588 | vrc4171_socket_t *socket; | |
589 | unsigned int events; | |
590 | irqreturn_t retval = IRQ_NONE; | |
591 | uint16_t status; | |
592 | ||
593 | status = vrc4171_get_irq_status(); | |
594 | if (status & IRQ_A) { | |
595 | socket = &vrc4171_sockets[CARD_SLOTA]; | |
596 | if (socket->slot == SLOT_INITIALIZED) { | |
597 | if (status & (1 << socket->csc_irq)) { | |
598 | events = get_events(CARD_SLOTA); | |
599 | if (events != 0) { | |
600 | pcmcia_parse_events(&socket->pcmcia_socket, events); | |
601 | retval = IRQ_HANDLED; | |
602 | } | |
603 | } | |
604 | } | |
605 | } | |
606 | ||
607 | if (status & IRQ_B) { | |
608 | socket = &vrc4171_sockets[CARD_SLOTB]; | |
609 | if (socket->slot == SLOT_INITIALIZED) { | |
610 | if (status & (1 << socket->csc_irq)) { | |
611 | events = get_events(CARD_SLOTB); | |
612 | if (events != 0) { | |
613 | pcmcia_parse_events(&socket->pcmcia_socket, events); | |
614 | retval = IRQ_HANDLED; | |
615 | } | |
616 | } | |
617 | } | |
618 | } | |
619 | ||
620 | return retval; | |
621 | } | |
622 | ||
623 | static inline void reserve_using_irq(int slot) | |
624 | { | |
625 | unsigned int irq; | |
626 | ||
627 | irq = exca_read_byte(slot, I365_INTCTL); | |
628 | irq &= 0x0f; | |
629 | vrc4171_irq_mask &= ~(1 << irq); | |
630 | ||
631 | irq = exca_read_byte(slot, I365_CSCINT); | |
632 | irq = (irq & 0xf0) >> 4; | |
633 | vrc4171_irq_mask &= ~(1 << irq); | |
634 | } | |
635 | ||
636 | static int __devinit vrc4171_add_sockets(void) | |
637 | { | |
638 | vrc4171_socket_t *socket; | |
639 | int slot, retval; | |
640 | ||
641 | for (slot = 0; slot < CARD_MAX_SLOTS; slot++) { | |
642 | if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE) | |
643 | continue; | |
644 | ||
645 | socket = &vrc4171_sockets[slot]; | |
646 | if (socket->slot != SLOT_PROBE) { | |
647 | uint8_t addrwin; | |
648 | ||
649 | switch (socket->slot) { | |
650 | case SLOT_NOPROBE_MEM: | |
651 | addrwin = exca_read_byte(slot, I365_ADDRWIN); | |
652 | addrwin &= 0x1f; | |
653 | exca_write_byte(slot, I365_ADDRWIN, addrwin); | |
654 | break; | |
655 | case SLOT_NOPROBE_IO: | |
656 | addrwin = exca_read_byte(slot, I365_ADDRWIN); | |
657 | addrwin &= 0xc0; | |
658 | exca_write_byte(slot, I365_ADDRWIN, addrwin); | |
659 | break; | |
660 | default: | |
661 | break; | |
662 | } | |
663 | ||
664 | reserve_using_irq(slot); | |
665 | continue; | |
666 | } | |
667 | ||
668 | sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot); | |
669 | socket->pcmcia_socket.dev.dev = &vrc4171_card_device.dev; | |
670 | socket->pcmcia_socket.ops = &vrc4171_pccard_operations; | |
671 | socket->pcmcia_socket.owner = THIS_MODULE; | |
672 | ||
673 | retval = pcmcia_register_socket(&socket->pcmcia_socket); | |
674 | if (retval < 0) | |
675 | return retval; | |
676 | ||
677 | exca_write_byte(slot, I365_ADDRWIN, 0); | |
678 | exca_write_byte(slot, GLOBAL_CONTROL, 0); | |
679 | ||
680 | socket->slot = SLOT_INITIALIZED; | |
681 | } | |
682 | ||
683 | return 0; | |
684 | } | |
685 | ||
686 | static void vrc4171_remove_sockets(void) | |
687 | { | |
688 | vrc4171_socket_t *socket; | |
689 | int slot; | |
690 | ||
691 | for (slot = 0; slot < CARD_MAX_SLOTS; slot++) { | |
692 | if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE) | |
693 | continue; | |
694 | ||
695 | socket = &vrc4171_sockets[slot]; | |
696 | if (socket->slot == SLOT_INITIALIZED) | |
697 | pcmcia_unregister_socket(&socket->pcmcia_socket); | |
698 | ||
699 | socket->slot = SLOT_PROBE; | |
700 | } | |
701 | } | |
702 | ||
703 | static int __devinit vrc4171_card_setup(char *options) | |
704 | { | |
705 | if (options == NULL || *options == '\0') | |
706 | return 0; | |
707 | ||
708 | if (strncmp(options, "irq:", 4) == 0) { | |
709 | int irq; | |
710 | options += 4; | |
711 | irq = simple_strtoul(options, &options, 0); | |
712 | if (irq >= 0 && irq < NR_IRQS) | |
713 | vrc4171_irq = irq; | |
714 | ||
715 | if (*options != ',') | |
716 | return 0; | |
717 | options++; | |
718 | } | |
719 | ||
720 | if (strncmp(options, "slota:", 6) == 0) { | |
721 | options += 6; | |
722 | if (*options != '\0') { | |
723 | if (strncmp(options, "memnoprobe", 10) == 0) { | |
724 | vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_MEM; | |
725 | options += 10; | |
726 | } else if (strncmp(options, "ionoprobe", 9) == 0) { | |
727 | vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_IO; | |
728 | options += 9; | |
729 | } else if ( strncmp(options, "noprobe", 7) == 0) { | |
730 | vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_ALL; | |
731 | options += 7; | |
732 | } | |
733 | ||
734 | if (*options != ',') | |
735 | return 0; | |
736 | options++; | |
737 | } else | |
738 | return 0; | |
739 | ||
740 | } | |
741 | ||
742 | if (strncmp(options, "slotb:", 6) == 0) { | |
743 | options += 6; | |
744 | if (*options != '\0') { | |
745 | if (strncmp(options, "pccard", 6) == 0) { | |
746 | vrc4171_slotb = SLOTB_IS_PCCARD; | |
747 | options += 6; | |
748 | } else if (strncmp(options, "cf", 2) == 0) { | |
749 | vrc4171_slotb = SLOTB_IS_CF; | |
750 | options += 2; | |
751 | } else if (strncmp(options, "flashrom", 8) == 0) { | |
752 | vrc4171_slotb = SLOTB_IS_FLASHROM; | |
753 | options += 8; | |
754 | } else if (strncmp(options, "none", 4) == 0) { | |
755 | vrc4171_slotb = SLOTB_IS_NONE; | |
756 | options += 4; | |
757 | } | |
758 | ||
759 | if (*options != ',') | |
760 | return 0; | |
761 | options++; | |
762 | ||
763 | if (strncmp(options, "memnoprobe", 10) == 0) | |
764 | vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_MEM; | |
765 | if (strncmp(options, "ionoprobe", 9) == 0) | |
766 | vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_IO; | |
767 | if (strncmp(options, "noprobe", 7) == 0) | |
768 | vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_ALL; | |
769 | } | |
770 | } | |
771 | ||
772 | return 0; | |
773 | } | |
774 | ||
775 | __setup("vrc4171_card=", vrc4171_card_setup); | |
776 | ||
8bf28030 | 777 | static int vrc4171_card_suspend(struct device *dev, pm_message_t state, u32 level) |
1da177e4 LT |
778 | { |
779 | int retval = 0; | |
780 | ||
781 | if (level == SUSPEND_SAVE_STATE) | |
782 | retval = pcmcia_socket_dev_suspend(dev, state); | |
783 | ||
784 | return retval; | |
785 | } | |
786 | ||
787 | static int vrc4171_card_resume(struct device *dev, u32 level) | |
788 | { | |
789 | int retval = 0; | |
790 | ||
791 | if (level == RESUME_RESTORE_STATE) | |
792 | retval = pcmcia_socket_dev_resume(dev); | |
793 | ||
794 | return retval; | |
795 | } | |
796 | ||
797 | static struct device_driver vrc4171_card_driver = { | |
798 | .name = vrc4171_card_name, | |
799 | .bus = &platform_bus_type, | |
800 | .suspend = vrc4171_card_suspend, | |
801 | .resume = vrc4171_card_resume, | |
802 | }; | |
803 | ||
804 | static int __devinit vrc4171_card_init(void) | |
805 | { | |
806 | int retval; | |
807 | ||
808 | retval = driver_register(&vrc4171_card_driver); | |
809 | if (retval < 0) | |
810 | return retval; | |
811 | ||
812 | retval = platform_device_register(&vrc4171_card_device); | |
813 | if (retval < 0) { | |
814 | driver_unregister(&vrc4171_card_driver); | |
815 | return retval; | |
816 | } | |
817 | ||
818 | vrc4171_set_multifunction_pin(vrc4171_slotb); | |
819 | ||
820 | retval = vrc4171_add_sockets(); | |
821 | if (retval == 0) | |
822 | retval = request_irq(vrc4171_irq, pccard_interrupt, SA_SHIRQ, | |
823 | vrc4171_card_name, vrc4171_sockets); | |
824 | ||
825 | if (retval < 0) { | |
826 | vrc4171_remove_sockets(); | |
827 | platform_device_unregister(&vrc4171_card_device); | |
828 | driver_unregister(&vrc4171_card_driver); | |
829 | return retval; | |
830 | } | |
831 | ||
832 | printk(KERN_INFO "%s, connected to IRQ %d\n", vrc4171_card_driver.name, vrc4171_irq); | |
833 | ||
834 | return 0; | |
835 | } | |
836 | ||
837 | static void __devexit vrc4171_card_exit(void) | |
838 | { | |
839 | free_irq(vrc4171_irq, vrc4171_sockets); | |
840 | vrc4171_remove_sockets(); | |
841 | platform_device_unregister(&vrc4171_card_device); | |
842 | driver_unregister(&vrc4171_card_driver); | |
843 | } | |
844 | ||
845 | module_init(vrc4171_card_init); | |
846 | module_exit(vrc4171_card_exit); |