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ring-buffer: Do not use schedule_work_on() for current CPU
[linux-2.6.git] / drivers / pcmcia / ti113x.h
bloba71789486cdf0d61cc159332ea22a5b9ae62e502
1 /*
2 * ti113x.h 1.16 1999/10/25 20:03:34
3 *
4 * The contents of this file are subject to the Mozilla Public License
5 * Version 1.1 (the "License"); you may not use this file except in
6 * compliance with the License. You may obtain a copy of the License
7 * at http://www.mozilla.org/MPL/
8 *
9 * Software distributed under the License is distributed on an "AS IS"
10 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
11 * the License for the specific language governing rights and
12 * limitations under the License.
13 *
14 * The initial developer of the original code is David A. Hinds
15 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
16 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
17 *
18 * Alternatively, the contents of this file may be used under the
19 * terms of the GNU General Public License version 2 (the "GPL"), in which
20 * case the provisions of the GPL are applicable instead of the
21 * above. If you wish to allow the use of your version of this file
22 * only under the terms of the GPL and not to allow others to use
23 * your version of this file under the MPL, indicate your decision by
24 * deleting the provisions above and replace them with the notice and
25 * other provisions required by the GPL. If you do not delete the
26 * provisions above, a recipient may use your version of this file
27 * under either the MPL or the GPL.
28 */
29
30 #ifndef _LINUX_TI113X_H
31 #define _LINUX_TI113X_H
32
33
34 /* Register definitions for TI 113X PCI-to-CardBus bridges */
35
36 /* System Control Register */
37 #define TI113X_SYSTEM_CONTROL 0x0080 /* 32 bit */
38 #define TI113X_SCR_SMIROUTE 0x04000000
39 #define TI113X_SCR_SMISTATUS 0x02000000
40 #define TI113X_SCR_SMIENB 0x01000000
41 #define TI113X_SCR_VCCPROT 0x00200000
42 #define TI113X_SCR_REDUCEZV 0x00100000
43 #define TI113X_SCR_CDREQEN 0x00080000
44 #define TI113X_SCR_CDMACHAN 0x00070000
45 #define TI113X_SCR_SOCACTIVE 0x00002000
46 #define TI113X_SCR_PWRSTREAM 0x00000800
47 #define TI113X_SCR_DELAYUP 0x00000400
48 #define TI113X_SCR_DELAYDOWN 0x00000200
49 #define TI113X_SCR_INTERROGATE 0x00000100
50 #define TI113X_SCR_CLKRUN_SEL 0x00000080
51 #define TI113X_SCR_PWRSAVINGS 0x00000040
52 #define TI113X_SCR_SUBSYSRW 0x00000020
53 #define TI113X_SCR_CB_DPAR 0x00000010
54 #define TI113X_SCR_CDMA_EN 0x00000008
55 #define TI113X_SCR_ASYNC_IRQ 0x00000004
56 #define TI113X_SCR_KEEPCLK 0x00000002
57 #define TI113X_SCR_CLKRUN_ENA 0x00000001
58
59 #define TI122X_SCR_SER_STEP 0xc0000000
60 #define TI122X_SCR_INTRTIE 0x20000000
61 #define TIXX21_SCR_TIEALL 0x10000000
62 #define TI122X_SCR_CBRSVD 0x00400000
63 #define TI122X_SCR_MRBURSTDN 0x00008000
64 #define TI122X_SCR_MRBURSTUP 0x00004000
65 #define TI122X_SCR_RIMUX 0x00000001
66
67 /* Multimedia Control Register */
68 #define TI1250_MULTIMEDIA_CTL 0x0084 /* 8 bit */
69 #define TI1250_MMC_ZVOUTEN 0x80
70 #define TI1250_MMC_PORTSEL 0x40
71 #define TI1250_MMC_ZVEN1 0x02
72 #define TI1250_MMC_ZVEN0 0x01
73
74 #define TI1250_GENERAL_STATUS 0x0085 /* 8 bit */
75 #define TI1250_GPIO0_CONTROL 0x0088 /* 8 bit */
76 #define TI1250_GPIO1_CONTROL 0x0089 /* 8 bit */
77 #define TI1250_GPIO2_CONTROL 0x008a /* 8 bit */
78 #define TI1250_GPIO3_CONTROL 0x008b /* 8 bit */
79 #define TI1250_GPIO_MODE_MASK 0xc0
80
81 /* IRQMUX/MFUNC Register */
82 #define TI122X_MFUNC 0x008c /* 32 bit */
83 #define TI122X_MFUNC0_MASK 0x0000000f
84 #define TI122X_MFUNC1_MASK 0x000000f0
85 #define TI122X_MFUNC2_MASK 0x00000f00
86 #define TI122X_MFUNC3_MASK 0x0000f000
87 #define TI122X_MFUNC4_MASK 0x000f0000
88 #define TI122X_MFUNC5_MASK 0x00f00000
89 #define TI122X_MFUNC6_MASK 0x0f000000
90
91 #define TI122X_MFUNC0_INTA 0x00000002
92 #define TI125X_MFUNC0_INTB 0x00000001
93 #define TI122X_MFUNC1_INTB 0x00000020
94 #define TI122X_MFUNC3_IRQSER 0x00001000
95
96
97 /* Retry Status Register */
98 #define TI113X_RETRY_STATUS 0x0090 /* 8 bit */
99 #define TI113X_RSR_PCIRETRY 0x80
100 #define TI113X_RSR_CBRETRY 0x40
101 #define TI113X_RSR_TEXP_CBB 0x20
102 #define TI113X_RSR_MEXP_CBB 0x10
103 #define TI113X_RSR_TEXP_CBA 0x08
104 #define TI113X_RSR_MEXP_CBA 0x04
105 #define TI113X_RSR_TEXP_PCI 0x02
106 #define TI113X_RSR_MEXP_PCI 0x01
107
108 /* Card Control Register */
109 #define TI113X_CARD_CONTROL 0x0091 /* 8 bit */
110 #define TI113X_CCR_RIENB 0x80
111 #define TI113X_CCR_ZVENABLE 0x40
112 #define TI113X_CCR_PCI_IRQ_ENA 0x20
113 #define TI113X_CCR_PCI_IREQ 0x10
114 #define TI113X_CCR_PCI_CSC 0x08
115 #define TI113X_CCR_SPKROUTEN 0x02
116 #define TI113X_CCR_IFG 0x01
117
118 #define TI1220_CCR_PORT_SEL 0x20
119 #define TI122X_CCR_AUD2MUX 0x04
120
121 /* Device Control Register */
122 #define TI113X_DEVICE_CONTROL 0x0092 /* 8 bit */
123 #define TI113X_DCR_5V_FORCE 0x40
124 #define TI113X_DCR_3V_FORCE 0x20
125 #define TI113X_DCR_IMODE_MASK 0x06
126 #define TI113X_DCR_IMODE_ISA 0x02
127 #define TI113X_DCR_IMODE_SERIAL 0x04
128
129 #define TI12XX_DCR_IMODE_PCI_ONLY 0x00
130 #define TI12XX_DCR_IMODE_ALL_SERIAL 0x06
131
132 /* Buffer Control Register */
133 #define TI113X_BUFFER_CONTROL 0x0093 /* 8 bit */
134 #define TI113X_BCR_CB_READ_DEPTH 0x08
135 #define TI113X_BCR_CB_WRITE_DEPTH 0x04
136 #define TI113X_BCR_PCI_READ_DEPTH 0x02
137 #define TI113X_BCR_PCI_WRITE_DEPTH 0x01
138
139 /* Diagnostic Register */
140 #define TI1250_DIAGNOSTIC 0x0093 /* 8 bit */
141 #define TI1250_DIAG_TRUE_VALUE 0x80
142 #define TI1250_DIAG_PCI_IREQ 0x40
143 #define TI1250_DIAG_PCI_CSC 0x20
144 #define TI1250_DIAG_ASYNC_CSC 0x01
145
146 /* DMA Registers */
147 #define TI113X_DMA_0 0x0094 /* 32 bit */
148 #define TI113X_DMA_1 0x0098 /* 32 bit */
149
150 /* ExCA IO offset registers */
151 #define TI113X_IO_OFFSET(map) (0x36+((map)<<1))
152
153 /* EnE test register */
154 #define ENE_TEST_C9 0xc9 /* 8bit */
155 #define ENE_TEST_C9_TLTENABLE 0x02
156 #define ENE_TEST_C9_PFENABLE_F0 0x04
157 #define ENE_TEST_C9_PFENABLE_F1 0x08
158 #define ENE_TEST_C9_PFENABLE (ENE_TEST_C9_PFENABLE_F0 | ENE_TEST_C9_PFENABLE_F1)
159 #define ENE_TEST_C9_WPDISALBLE_F0 0x40
160 #define ENE_TEST_C9_WPDISALBLE_F1 0x80
161 #define ENE_TEST_C9_WPDISALBLE (ENE_TEST_C9_WPDISALBLE_F0 | ENE_TEST_C9_WPDISALBLE_F1)
162
163 /*
164 * Texas Instruments CardBus controller overrides.
165 */
166 #define ti_sysctl(socket) ((socket)->private[0])
167 #define ti_cardctl(socket) ((socket)->private[1])
168 #define ti_devctl(socket) ((socket)->private[2])
169 #define ti_diag(socket) ((socket)->private[3])
170 #define ti_mfunc(socket) ((socket)->private[4])
171 #define ene_test_c9(socket) ((socket)->private[5])
172
173 /*
174 * These are the TI specific power management handlers.
175 */
176 static void ti_save_state(struct yenta_socket *socket)
177 {
178 ti_sysctl(socket) = config_readl(socket, TI113X_SYSTEM_CONTROL);
179 ti_mfunc(socket) = config_readl(socket, TI122X_MFUNC);
180 ti_cardctl(socket) = config_readb(socket, TI113X_CARD_CONTROL);
181 ti_devctl(socket) = config_readb(socket, TI113X_DEVICE_CONTROL);
182 ti_diag(socket) = config_readb(socket, TI1250_DIAGNOSTIC);
183
184 if (socket->dev->vendor == PCI_VENDOR_ID_ENE)
185 ene_test_c9(socket) = config_readb(socket, ENE_TEST_C9);
186 }
187
188 static void ti_restore_state(struct yenta_socket *socket)
189 {
190 config_writel(socket, TI113X_SYSTEM_CONTROL, ti_sysctl(socket));
191 config_writel(socket, TI122X_MFUNC, ti_mfunc(socket));
192 config_writeb(socket, TI113X_CARD_CONTROL, ti_cardctl(socket));
193 config_writeb(socket, TI113X_DEVICE_CONTROL, ti_devctl(socket));
194 config_writeb(socket, TI1250_DIAGNOSTIC, ti_diag(socket));
195
196 if (socket->dev->vendor == PCI_VENDOR_ID_ENE)
197 config_writeb(socket, ENE_TEST_C9, ene_test_c9(socket));
198 }
199
200 /*
201 * Zoom video control for TI122x/113x chips
202 */
203
204 static void ti_zoom_video(struct pcmcia_socket *sock, int onoff)
205 {
206 u8 reg;
207 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
208
209 /* If we don't have a Zoom Video switch this is harmless,
210 we just tristate the unused (ZV) lines */
211 reg = config_readb(socket, TI113X_CARD_CONTROL);
212 if (onoff)
213 /* Zoom zoom, we will all go together, zoom zoom, zoom zoom */
214 reg |= TI113X_CCR_ZVENABLE;
215 else
216 reg &= ~TI113X_CCR_ZVENABLE;
217 config_writeb(socket, TI113X_CARD_CONTROL, reg);
218 }
219
220 /*
221 * The 145x series can also use this. They have an additional
222 * ZV autodetect mode we don't use but don't actually need.
223 * FIXME: manual says its in func0 and func1 but disagrees with
224 * itself about this - do we need to force func0, if so we need
225 * to know a lot more about socket pairings in pcmcia_socket than
226 * we do now.. uggh.
227 */
228
229 static void ti1250_zoom_video(struct pcmcia_socket *sock, int onoff)
230 {
231 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
232 int shift = 0;
233 u8 reg;
234
235 ti_zoom_video(sock, onoff);
236
237 reg = config_readb(socket, TI1250_MULTIMEDIA_CTL);
238 reg |= TI1250_MMC_ZVOUTEN; /* ZV bus enable */
239
240 if(PCI_FUNC(socket->dev->devfn)==1)
241 shift = 1;
242
243 if(onoff)
244 {
245 reg &= ~(1<<6); /* Clear select bit */
246 reg |= shift<<6; /* Favour our socket */
247 reg |= 1<<shift; /* Socket zoom video on */
248 }
249 else
250 {
251 reg &= ~(1<<6); /* Clear select bit */
252 reg |= (1^shift)<<6; /* Favour other socket */
253 reg &= ~(1<<shift); /* Socket zoon video off */
254 }
255
256 config_writeb(socket, TI1250_MULTIMEDIA_CTL, reg);
257 }
258
259 static void ti_set_zv(struct yenta_socket *socket)
260 {
261 if(socket->dev->vendor == PCI_VENDOR_ID_TI)
262 {
263 switch(socket->dev->device)
264 {
265 /* There may be more .. */
266 case PCI_DEVICE_ID_TI_1220:
267 case PCI_DEVICE_ID_TI_1221:
268 case PCI_DEVICE_ID_TI_1225:
269 case PCI_DEVICE_ID_TI_4510:
270 socket->socket.zoom_video = ti_zoom_video;
271 break;
272 case PCI_DEVICE_ID_TI_1250:
273 case PCI_DEVICE_ID_TI_1251A:
274 case PCI_DEVICE_ID_TI_1251B:
275 case PCI_DEVICE_ID_TI_1450:
276 socket->socket.zoom_video = ti1250_zoom_video;
277 }
278 }
279 }
280
281
282 /*
283 * Generic TI init - TI has an extension for the
284 * INTCTL register that sets the PCI CSC interrupt.
285 * Make sure we set it correctly at open and init
286 * time
287 * - override: disable the PCI CSC interrupt. This makes
288 * it possible to use the CSC interrupt to probe the
289 * ISA interrupts.
290 * - init: set the interrupt to match our PCI state.
291 * This makes us correctly get PCI CSC interrupt
292 * events.
293 */
294 static int ti_init(struct yenta_socket *socket)
295 {
296 u8 new, reg = exca_readb(socket, I365_INTCTL);
297
298 new = reg & ~I365_INTR_ENA;
299 if (socket->dev->irq)
300 new |= I365_INTR_ENA;
301 if (new != reg)
302 exca_writeb(socket, I365_INTCTL, new);
303 return 0;
304 }
305
306 static int ti_override(struct yenta_socket *socket)
307 {
308 u8 new, reg = exca_readb(socket, I365_INTCTL);
309
310 new = reg & ~I365_INTR_ENA;
311 if (new != reg)
312 exca_writeb(socket, I365_INTCTL, new);
313
314 ti_set_zv(socket);
315
316 return 0;
317 }
318
319 static void ti113x_use_isa_irq(struct yenta_socket *socket)
320 {
321 int isa_irq = -1;
322 u8 intctl;
323 u32 isa_irq_mask = 0;
324
325 if (!isa_probe)
326 return;
327
328 /* get a free isa int */
329 isa_irq_mask = yenta_probe_irq(socket, isa_interrupts);
330 if (!isa_irq_mask)
331 return; /* no useable isa irq found */
332
333 /* choose highest available */
334 for (; isa_irq_mask; isa_irq++)
335 isa_irq_mask >>= 1;
336 socket->cb_irq = isa_irq;
337
338 exca_writeb(socket, I365_CSCINT, (isa_irq << 4));
339
340 intctl = exca_readb(socket, I365_INTCTL);
341 intctl &= ~(I365_INTR_ENA | I365_IRQ_MASK); /* CSC Enable */
342 exca_writeb(socket, I365_INTCTL, intctl);
343
344 dev_info(&socket->dev->dev,
345 "Yenta TI113x: using isa irq %d for CardBus\n", isa_irq);
346 }
347
348
349 static int ti113x_override(struct yenta_socket *socket)
350 {
351 u8 cardctl;
352
353 cardctl = config_readb(socket, TI113X_CARD_CONTROL);
354 cardctl &= ~(TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_IREQ | TI113X_CCR_PCI_CSC);
355 if (socket->dev->irq)
356 cardctl |= TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_CSC | TI113X_CCR_PCI_IREQ;
357 else
358 ti113x_use_isa_irq(socket);
359
360 config_writeb(socket, TI113X_CARD_CONTROL, cardctl);
361
362 return ti_override(socket);
363 }
364
365
366 /* irqrouting for func0, probes PCI interrupt and ISA interrupts */
367 static void ti12xx_irqroute_func0(struct yenta_socket *socket)
368 {
369 u32 mfunc, mfunc_old, devctl;
370 u8 gpio3, gpio3_old;
371 int pci_irq_status;
372
373 mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
374 devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
375 dev_printk(KERN_INFO, &socket->dev->dev,
376 "TI: mfunc 0x%08x, devctl 0x%02x\n", mfunc, devctl);
377
378 /* make sure PCI interrupts are enabled before probing */
379 ti_init(socket);
380
381 /* test PCI interrupts first. only try fixing if return value is 0! */
382 pci_irq_status = yenta_probe_cb_irq(socket);
383 if (pci_irq_status)
384 goto out;
385
386 /*
387 * We're here which means PCI interrupts are _not_ delivered. try to
388 * find the right setting (all serial or parallel)
389 */
390 dev_printk(KERN_INFO, &socket->dev->dev,
391 "TI: probing PCI interrupt failed, trying to fix\n");
392
393 /* for serial PCI make sure MFUNC3 is set to IRQSER */
394 if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
395 switch (socket->dev->device) {
396 case PCI_DEVICE_ID_TI_1250:
397 case PCI_DEVICE_ID_TI_1251A:
398 case PCI_DEVICE_ID_TI_1251B:
399 case PCI_DEVICE_ID_TI_1450:
400 case PCI_DEVICE_ID_TI_1451A:
401 case PCI_DEVICE_ID_TI_4450:
402 case PCI_DEVICE_ID_TI_4451:
403 /* these chips have no IRQSER setting in MFUNC3 */
404 break;
405
406 default:
407 mfunc = (mfunc & ~TI122X_MFUNC3_MASK) | TI122X_MFUNC3_IRQSER;
408
409 /* write down if changed, probe */
410 if (mfunc != mfunc_old) {
411 config_writel(socket, TI122X_MFUNC, mfunc);
412
413 pci_irq_status = yenta_probe_cb_irq(socket);
414 if (pci_irq_status == 1) {
415 dev_printk(KERN_INFO, &socket->dev->dev,
416 "TI: all-serial interrupts ok\n");
417 mfunc_old = mfunc;
418 goto out;
419 }
420
421 /* not working, back to old value */
422 mfunc = mfunc_old;
423 config_writel(socket, TI122X_MFUNC, mfunc);
424
425 if (pci_irq_status == -1)
426 goto out;
427 }
428 }
429
430 /* serial PCI interrupts not working fall back to parallel */
431 dev_printk(KERN_INFO, &socket->dev->dev,
432 "TI: falling back to parallel PCI interrupts\n");
433 devctl &= ~TI113X_DCR_IMODE_MASK;
434 devctl |= TI113X_DCR_IMODE_SERIAL; /* serial ISA could be right */
435 config_writeb(socket, TI113X_DEVICE_CONTROL, devctl);
436 }
437
438 /* parallel PCI interrupts: route INTA */
439 switch (socket->dev->device) {
440 case PCI_DEVICE_ID_TI_1250:
441 case PCI_DEVICE_ID_TI_1251A:
442 case PCI_DEVICE_ID_TI_1251B:
443 case PCI_DEVICE_ID_TI_1450:
444 /* make sure GPIO3 is set to INTA */
445 gpio3 = gpio3_old = config_readb(socket, TI1250_GPIO3_CONTROL);
446 gpio3 &= ~TI1250_GPIO_MODE_MASK;
447 if (gpio3 != gpio3_old)
448 config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3);
449 break;
450
451 default:
452 gpio3 = gpio3_old = 0;
453
454 mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI122X_MFUNC0_INTA;
455 if (mfunc != mfunc_old)
456 config_writel(socket, TI122X_MFUNC, mfunc);
457 }
458
459 /* time to probe again */
460 pci_irq_status = yenta_probe_cb_irq(socket);
461 if (pci_irq_status == 1) {
462 mfunc_old = mfunc;
463 dev_printk(KERN_INFO, &socket->dev->dev,
464 "TI: parallel PCI interrupts ok\n");
465 } else {
466 /* not working, back to old value */
467 mfunc = mfunc_old;
468 config_writel(socket, TI122X_MFUNC, mfunc);
469 if (gpio3 != gpio3_old)
470 config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3_old);
471 }
472
473 out:
474 if (pci_irq_status < 1) {
475 socket->cb_irq = 0;
476 dev_printk(KERN_INFO, &socket->dev->dev,
477 "Yenta TI: no PCI interrupts. Fish. "
478 "Please report.\n");
479 }
480 }
481
482
483 /* changes the irq of func1 to match that of func0 */
484 static int ti12xx_align_irqs(struct yenta_socket *socket, int *old_irq)
485 {
486 struct pci_dev *func0;
487
488 /* find func0 device */
489 func0 = pci_get_slot(socket->dev->bus, socket->dev->devfn & ~0x07);
490 if (!func0)
491 return 0;
492
493 if (old_irq)
494 *old_irq = socket->cb_irq;
495 socket->cb_irq = socket->dev->irq = func0->irq;
496
497 pci_dev_put(func0);
498
499 return 1;
500 }
501
502 /*
503 * ties INTA and INTB together. also changes the devices irq to that of
504 * the function 0 device. call from func1 only.
505 * returns 1 if INTRTIE changed, 0 otherwise.
506 */
507 static int ti12xx_tie_interrupts(struct yenta_socket *socket, int *old_irq)
508 {
509 u32 sysctl;
510 int ret;
511
512 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
513 if (sysctl & TI122X_SCR_INTRTIE)
514 return 0;
515
516 /* align */
517 ret = ti12xx_align_irqs(socket, old_irq);
518 if (!ret)
519 return 0;
520
521 /* tie */
522 sysctl |= TI122X_SCR_INTRTIE;
523 config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);
524
525 return 1;
526 }
527
528 /* undo what ti12xx_tie_interrupts() did */
529 static void ti12xx_untie_interrupts(struct yenta_socket *socket, int old_irq)
530 {
531 u32 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
532 sysctl &= ~TI122X_SCR_INTRTIE;
533 config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);
534
535 socket->cb_irq = socket->dev->irq = old_irq;
536 }
537
538 /*
539 * irqrouting for func1, plays with INTB routing
540 * only touches MFUNC for INTB routing. all other bits are taken
541 * care of in func0 already.
542 */
543 static void ti12xx_irqroute_func1(struct yenta_socket *socket)
544 {
545 u32 mfunc, mfunc_old, devctl, sysctl;
546 int pci_irq_status;
547
548 mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
549 devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
550 dev_printk(KERN_INFO, &socket->dev->dev,
551 "TI: mfunc 0x%08x, devctl 0x%02x\n",
552 mfunc, devctl);
553
554 /* if IRQs are configured as tied, align irq of func1 with func0 */
555 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
556 if (sysctl & TI122X_SCR_INTRTIE)
557 ti12xx_align_irqs(socket, NULL);
558
559 /* make sure PCI interrupts are enabled before probing */
560 ti_init(socket);
561
562 /* test PCI interrupts first. only try fixing if return value is 0! */
563 pci_irq_status = yenta_probe_cb_irq(socket);
564 if (pci_irq_status)
565 goto out;
566
567 /*
568 * We're here which means PCI interrupts are _not_ delivered. try to
569 * find the right setting
570 */
571 dev_printk(KERN_INFO, &socket->dev->dev,
572 "TI: probing PCI interrupt failed, trying to fix\n");
573
574 /* if all serial: set INTRTIE, probe again */
575 if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
576 int old_irq;
577
578 if (ti12xx_tie_interrupts(socket, &old_irq)) {
579 pci_irq_status = yenta_probe_cb_irq(socket);
580 if (pci_irq_status == 1) {
581 dev_printk(KERN_INFO, &socket->dev->dev,
582 "TI: all-serial interrupts, tied ok\n");
583 goto out;
584 }
585
586 ti12xx_untie_interrupts(socket, old_irq);
587 }
588 }
589 /* parallel PCI: route INTB, probe again */
590 else {
591 int old_irq;
592
593 switch (socket->dev->device) {
594 case PCI_DEVICE_ID_TI_1250:
595 /* the 1250 has one pin for IRQSER/INTB depending on devctl */
596 break;
597
598 case PCI_DEVICE_ID_TI_1251A:
599 case PCI_DEVICE_ID_TI_1251B:
600 case PCI_DEVICE_ID_TI_1450:
601 /*
602 * those have a pin for IRQSER/INTB plus INTB in MFUNC0
603 * we alread probed the shared pin, now go for MFUNC0
604 */
605 mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI125X_MFUNC0_INTB;
606 break;
607
608 default:
609 mfunc = (mfunc & ~TI122X_MFUNC1_MASK) | TI122X_MFUNC1_INTB;
610 break;
611 }
612
613 /* write, probe */
614 if (mfunc != mfunc_old) {
615 config_writel(socket, TI122X_MFUNC, mfunc);
616
617 pci_irq_status = yenta_probe_cb_irq(socket);
618 if (pci_irq_status == 1) {
619 dev_printk(KERN_INFO, &socket->dev->dev,
620 "TI: parallel PCI interrupts ok\n");
621 goto out;
622 }
623
624 mfunc = mfunc_old;
625 config_writel(socket, TI122X_MFUNC, mfunc);
626
627 if (pci_irq_status == -1)
628 goto out;
629 }
630
631 /* still nothing: set INTRTIE */
632 if (ti12xx_tie_interrupts(socket, &old_irq)) {
633 pci_irq_status = yenta_probe_cb_irq(socket);
634 if (pci_irq_status == 1) {
635 dev_printk(KERN_INFO, &socket->dev->dev,
636 "TI: parallel PCI interrupts, tied ok\n");
637 goto out;
638 }
639
640 ti12xx_untie_interrupts(socket, old_irq);
641 }
642 }
643
644 out:
645 if (pci_irq_status < 1) {
646 socket->cb_irq = 0;
647 dev_printk(KERN_INFO, &socket->dev->dev,
648 "TI: no PCI interrupts. Fish. Please report.\n");
649 }
650 }
651
652
653 /* Returns true value if the second slot of a two-slot controller is empty */
654 static int ti12xx_2nd_slot_empty(struct yenta_socket *socket)
655 {
656 struct pci_dev *func;
657 struct yenta_socket *slot2;
658 int devfn;
659 unsigned int state;
660 int ret = 1;
661 u32 sysctl;
662
663 /* catch the two-slot controllers */
664 switch (socket->dev->device) {
665 case PCI_DEVICE_ID_TI_1220:
666 case PCI_DEVICE_ID_TI_1221:
667 case PCI_DEVICE_ID_TI_1225:
668 case PCI_DEVICE_ID_TI_1251A:
669 case PCI_DEVICE_ID_TI_1251B:
670 case PCI_DEVICE_ID_TI_1420:
671 case PCI_DEVICE_ID_TI_1450:
672 case PCI_DEVICE_ID_TI_1451A:
673 case PCI_DEVICE_ID_TI_1520:
674 case PCI_DEVICE_ID_TI_1620:
675 case PCI_DEVICE_ID_TI_4520:
676 case PCI_DEVICE_ID_TI_4450:
677 case PCI_DEVICE_ID_TI_4451:
678 /*
679 * there are way more, but they need to be added in yenta_socket.c
680 * and pci_ids.h first anyway.
681 */
682 break;
683
684 case PCI_DEVICE_ID_TI_XX12:
685 case PCI_DEVICE_ID_TI_X515:
686 case PCI_DEVICE_ID_TI_X420:
687 case PCI_DEVICE_ID_TI_X620:
688 case PCI_DEVICE_ID_TI_XX21_XX11:
689 case PCI_DEVICE_ID_TI_7410:
690 case PCI_DEVICE_ID_TI_7610:
691 /*
692 * those are either single or dual slot CB with additional functions
693 * like 1394, smartcard reader, etc. check the TIEALL flag for them
694 * the TIEALL flag binds the IRQ of all functions together.
695 * we catch the single slot variants later.
696 */
697 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
698 if (sysctl & TIXX21_SCR_TIEALL)
699 return 0;
700
701 break;
702
703 /* single-slot controllers have the 2nd slot empty always :) */
704 default:
705 return 1;
706 }
707
708 /* get other slot */
709 devfn = socket->dev->devfn & ~0x07;
710 func = pci_get_slot(socket->dev->bus,
711 (socket->dev->devfn & 0x07) ? devfn : devfn | 0x01);
712 if (!func)
713 return 1;
714
715 /*
716 * check that the device id of both slots match. this is needed for the
717 * XX21 and the XX11 controller that share the same device id for single
718 * and dual slot controllers. return '2nd slot empty'. we already checked
719 * if the interrupt is tied to another function.
720 */
721 if (socket->dev->device != func->device)
722 goto out;
723
724 slot2 = pci_get_drvdata(func);
725 if (!slot2)
726 goto out;
727
728 /* check state */
729 yenta_get_status(&slot2->socket, &state);
730 if (state & SS_DETECT) {
731 ret = 0;
732 goto out;
733 }
734
735 out:
736 pci_dev_put(func);
737 return ret;
738 }
739
740 /*
741 * TI specifiy parts for the power hook.
742 *
743 * some TI's with some CB's produces interrupt storm on power on. it has been
744 * seen with atheros wlan cards on TI1225 and TI1410. solution is simply to
745 * disable any CB interrupts during this time.
746 */
747 static int ti12xx_power_hook(struct pcmcia_socket *sock, int operation)
748 {
749 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
750 u32 mfunc, devctl, sysctl;
751 u8 gpio3;
752
753 /* only POWER_PRE and POWER_POST are interesting */
754 if ((operation != HOOK_POWER_PRE) && (operation != HOOK_POWER_POST))
755 return 0;
756
757 devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
758 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
759 mfunc = config_readl(socket, TI122X_MFUNC);
760
761 /*
762 * all serial/tied: only disable when modparm set. always doing it
763 * would mean a regression for working setups 'cos it disables the
764 * interrupts for both both slots on 2-slot controllers
765 * (and users of single slot controllers where it's save have to
766 * live with setting the modparm, most don't have to anyway)
767 */
768 if (((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) &&
769 (pwr_irqs_off || ti12xx_2nd_slot_empty(socket))) {
770 switch (socket->dev->device) {
771 case PCI_DEVICE_ID_TI_1250:
772 case PCI_DEVICE_ID_TI_1251A:
773 case PCI_DEVICE_ID_TI_1251B:
774 case PCI_DEVICE_ID_TI_1450:
775 case PCI_DEVICE_ID_TI_1451A:
776 case PCI_DEVICE_ID_TI_4450:
777 case PCI_DEVICE_ID_TI_4451:
778 /* these chips have no IRQSER setting in MFUNC3 */
779 break;
780
781 default:
782 if (operation == HOOK_POWER_PRE)
783 mfunc = (mfunc & ~TI122X_MFUNC3_MASK);
784 else
785 mfunc = (mfunc & ~TI122X_MFUNC3_MASK) | TI122X_MFUNC3_IRQSER;
786 }
787
788 return 0;
789 }
790
791 /* do the job differently for func0/1 */
792 if ((PCI_FUNC(socket->dev->devfn) == 0) ||
793 ((sysctl & TI122X_SCR_INTRTIE) &&
794 (pwr_irqs_off || ti12xx_2nd_slot_empty(socket)))) {
795 /* some bridges are different */
796 switch (socket->dev->device) {
797 case PCI_DEVICE_ID_TI_1250:
798 case PCI_DEVICE_ID_TI_1251A:
799 case PCI_DEVICE_ID_TI_1251B:
800 case PCI_DEVICE_ID_TI_1450:
801 /* those oldies use gpio3 for INTA */
802 gpio3 = config_readb(socket, TI1250_GPIO3_CONTROL);
803 if (operation == HOOK_POWER_PRE)
804 gpio3 = (gpio3 & ~TI1250_GPIO_MODE_MASK) | 0x40;
805 else
806 gpio3 &= ~TI1250_GPIO_MODE_MASK;
807 config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3);
808 break;
809
810 default:
811 /* all new bridges are the same */
812 if (operation == HOOK_POWER_PRE)
813 mfunc &= ~TI122X_MFUNC0_MASK;
814 else
815 mfunc |= TI122X_MFUNC0_INTA;
816 config_writel(socket, TI122X_MFUNC, mfunc);
817 }
818 } else {
819 switch (socket->dev->device) {
820 case PCI_DEVICE_ID_TI_1251A:
821 case PCI_DEVICE_ID_TI_1251B:
822 case PCI_DEVICE_ID_TI_1450:
823 /* those have INTA elsewhere and INTB in MFUNC0 */
824 if (operation == HOOK_POWER_PRE)
825 mfunc &= ~TI122X_MFUNC0_MASK;
826 else
827 mfunc |= TI125X_MFUNC0_INTB;
828 config_writel(socket, TI122X_MFUNC, mfunc);
829
830 break;
831
832 default:
833 /* all new bridges are the same */
834 if (operation == HOOK_POWER_PRE)
835 mfunc &= ~TI122X_MFUNC1_MASK;
836 else
837 mfunc |= TI122X_MFUNC1_INTB;
838 config_writel(socket, TI122X_MFUNC, mfunc);
839 }
840 }
841
842 return 0;
843 }
844
845 static int ti12xx_override(struct yenta_socket *socket)
846 {
847 u32 val, val_orig;
848
849 /* make sure that memory burst is active */
850 val_orig = val = config_readl(socket, TI113X_SYSTEM_CONTROL);
851 if (disable_clkrun && PCI_FUNC(socket->dev->devfn) == 0) {
852 dev_printk(KERN_INFO, &socket->dev->dev,
853 "Disabling CLKRUN feature\n");
854 val |= TI113X_SCR_KEEPCLK;
855 }
856 if (!(val & TI122X_SCR_MRBURSTUP)) {
857 dev_printk(KERN_INFO, &socket->dev->dev,
858 "Enabling burst memory read transactions\n");
859 val |= TI122X_SCR_MRBURSTUP;
860 }
861 if (val_orig != val)
862 config_writel(socket, TI113X_SYSTEM_CONTROL, val);
863
864 /*
865 * Yenta expects controllers to use CSCINT to route
866 * CSC interrupts to PCI rather than INTVAL.
867 */
868 val = config_readb(socket, TI1250_DIAGNOSTIC);
869 dev_printk(KERN_INFO, &socket->dev->dev,
870 "Using %s to route CSC interrupts to PCI\n",
871 (val & TI1250_DIAG_PCI_CSC) ? "CSCINT" : "INTVAL");
872 dev_printk(KERN_INFO, &socket->dev->dev,
873 "Routing CardBus interrupts to %s\n",
874 (val & TI1250_DIAG_PCI_IREQ) ? "PCI" : "ISA");
875
876 /* do irqrouting, depending on function */
877 if (PCI_FUNC(socket->dev->devfn) == 0)
878 ti12xx_irqroute_func0(socket);
879 else
880 ti12xx_irqroute_func1(socket);
881
882 /* install power hook */
883 socket->socket.power_hook = ti12xx_power_hook;
884
885 return ti_override(socket);
886 }
887
888
889 static int ti1250_override(struct yenta_socket *socket)
890 {
891 u8 old, diag;
892
893 old = config_readb(socket, TI1250_DIAGNOSTIC);
894 diag = old & ~(TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ);
895 if (socket->cb_irq)
896 diag |= TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ;
897
898 if (diag != old) {
899 dev_printk(KERN_INFO, &socket->dev->dev,
900 "adjusting diagnostic: %02x -> %02x\n",
901 old, diag);
902 config_writeb(socket, TI1250_DIAGNOSTIC, diag);
903 }
904
905 return ti12xx_override(socket);
906 }
907
908
909 /**
910 * EnE specific part. EnE bridges are register compatible with TI bridges but
911 * have their own test registers and more important their own little problems.
912 * Some fixup code to make everybody happy (TM).
913 */
914
915 #ifdef CONFIG_YENTA_ENE_TUNE
916 /*
917 * set/clear various test bits:
918 * Defaults to clear the bit.
919 * - mask (u8) defines what bits to change
920 * - bits (u8) is the values to change them to
921 * -> it's
922 * current = (current & ~mask) | bits
923 */
924 /* pci ids of devices that wants to have the bit set */
925 #define DEVID(_vend,_dev,_subvend,_subdev,mask,bits) { \
926 .vendor = _vend, \
927 .device = _dev, \
928 .subvendor = _subvend, \
929 .subdevice = _subdev, \
930 .driver_data = ((mask) << 8 | (bits)), \
931 }
932 static struct pci_device_id ene_tune_tbl[] = {
933 /* Echo Audio products based on motorola DSP56301 and DSP56361 */
934 DEVID(PCI_VENDOR_ID_MOTOROLA, 0x1801, 0xECC0, PCI_ANY_ID,
935 ENE_TEST_C9_TLTENABLE | ENE_TEST_C9_PFENABLE, ENE_TEST_C9_TLTENABLE),
936 DEVID(PCI_VENDOR_ID_MOTOROLA, 0x3410, 0xECC0, PCI_ANY_ID,
937 ENE_TEST_C9_TLTENABLE | ENE_TEST_C9_PFENABLE, ENE_TEST_C9_TLTENABLE),
938
939 {}
940 };
941
942 static void ene_tune_bridge(struct pcmcia_socket *sock, struct pci_bus *bus)
943 {
944 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
945 struct pci_dev *dev;
946 struct pci_device_id *id = NULL;
947 u8 test_c9, old_c9, mask, bits;
948
949 list_for_each_entry(dev, &bus->devices, bus_list) {
950 id = (struct pci_device_id *) pci_match_id(ene_tune_tbl, dev);
951 if (id)
952 break;
953 }
954
955 test_c9 = old_c9 = config_readb(socket, ENE_TEST_C9);
956 if (id) {
957 mask = (id->driver_data >> 8) & 0xFF;
958 bits = id->driver_data & 0xFF;
959
960 test_c9 = (test_c9 & ~mask) | bits;
961 }
962 else
963 /* default to clear TLTEnable bit, old behaviour */
964 test_c9 &= ~ENE_TEST_C9_TLTENABLE;
965
966 dev_printk(KERN_INFO, &socket->dev->dev,
967 "EnE: chaning testregister 0xC9, %02x -> %02x\n",
968 old_c9, test_c9);
969 config_writeb(socket, ENE_TEST_C9, test_c9);
970 }
971
972 static int ene_override(struct yenta_socket *socket)
973 {
974 /* install tune_bridge() function */
975 socket->socket.tune_bridge = ene_tune_bridge;
976
977 return ti1250_override(socket);
978 }
979 #else
980 # define ene_override ti1250_override
981 #endif /* !CONFIG_YENTA_ENE_TUNE */
982
983 #endif /* _LINUX_TI113X_H */
984
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