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ARM: S5P6440: Add serial port support
[linux-2.6.git] / drivers / pcmcia / ti113x.h
blobaaa70227bfb05ee4df811a00fc11df5670d8d50c
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->cb_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 int ti113x_override(struct yenta_socket *socket)
320 {
321 u8 cardctl;
322
323 cardctl = config_readb(socket, TI113X_CARD_CONTROL);
324 cardctl &= ~(TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_IREQ | TI113X_CCR_PCI_CSC);
325 if (socket->cb_irq)
326 cardctl |= TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_CSC | TI113X_CCR_PCI_IREQ;
327 config_writeb(socket, TI113X_CARD_CONTROL, cardctl);
328
329 return ti_override(socket);
330 }
331
332
333 /* irqrouting for func0, probes PCI interrupt and ISA interrupts */
334 static void ti12xx_irqroute_func0(struct yenta_socket *socket)
335 {
336 u32 mfunc, mfunc_old, devctl;
337 u8 gpio3, gpio3_old;
338 int pci_irq_status;
339
340 mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
341 devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
342 dev_printk(KERN_INFO, &socket->dev->dev,
343 "TI: mfunc 0x%08x, devctl 0x%02x\n", mfunc, devctl);
344
345 /* make sure PCI interrupts are enabled before probing */
346 ti_init(socket);
347
348 /* test PCI interrupts first. only try fixing if return value is 0! */
349 pci_irq_status = yenta_probe_cb_irq(socket);
350 if (pci_irq_status)
351 goto out;
352
353 /*
354 * We're here which means PCI interrupts are _not_ delivered. try to
355 * find the right setting (all serial or parallel)
356 */
357 dev_printk(KERN_INFO, &socket->dev->dev,
358 "TI: probing PCI interrupt failed, trying to fix\n");
359
360 /* for serial PCI make sure MFUNC3 is set to IRQSER */
361 if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
362 switch (socket->dev->device) {
363 case PCI_DEVICE_ID_TI_1250:
364 case PCI_DEVICE_ID_TI_1251A:
365 case PCI_DEVICE_ID_TI_1251B:
366 case PCI_DEVICE_ID_TI_1450:
367 case PCI_DEVICE_ID_TI_1451A:
368 case PCI_DEVICE_ID_TI_4450:
369 case PCI_DEVICE_ID_TI_4451:
370 /* these chips have no IRQSER setting in MFUNC3 */
371 break;
372
373 default:
374 mfunc = (mfunc & ~TI122X_MFUNC3_MASK) | TI122X_MFUNC3_IRQSER;
375
376 /* write down if changed, probe */
377 if (mfunc != mfunc_old) {
378 config_writel(socket, TI122X_MFUNC, mfunc);
379
380 pci_irq_status = yenta_probe_cb_irq(socket);
381 if (pci_irq_status == 1) {
382 dev_printk(KERN_INFO, &socket->dev->dev,
383 "TI: all-serial interrupts ok\n");
384 mfunc_old = mfunc;
385 goto out;
386 }
387
388 /* not working, back to old value */
389 mfunc = mfunc_old;
390 config_writel(socket, TI122X_MFUNC, mfunc);
391
392 if (pci_irq_status == -1)
393 goto out;
394 }
395 }
396
397 /* serial PCI interrupts not working fall back to parallel */
398 dev_printk(KERN_INFO, &socket->dev->dev,
399 "TI: falling back to parallel PCI interrupts\n");
400 devctl &= ~TI113X_DCR_IMODE_MASK;
401 devctl |= TI113X_DCR_IMODE_SERIAL; /* serial ISA could be right */
402 config_writeb(socket, TI113X_DEVICE_CONTROL, devctl);
403 }
404
405 /* parallel PCI interrupts: route INTA */
406 switch (socket->dev->device) {
407 case PCI_DEVICE_ID_TI_1250:
408 case PCI_DEVICE_ID_TI_1251A:
409 case PCI_DEVICE_ID_TI_1251B:
410 case PCI_DEVICE_ID_TI_1450:
411 /* make sure GPIO3 is set to INTA */
412 gpio3 = gpio3_old = config_readb(socket, TI1250_GPIO3_CONTROL);
413 gpio3 &= ~TI1250_GPIO_MODE_MASK;
414 if (gpio3 != gpio3_old)
415 config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3);
416 break;
417
418 default:
419 gpio3 = gpio3_old = 0;
420
421 mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI122X_MFUNC0_INTA;
422 if (mfunc != mfunc_old)
423 config_writel(socket, TI122X_MFUNC, mfunc);
424 }
425
426 /* time to probe again */
427 pci_irq_status = yenta_probe_cb_irq(socket);
428 if (pci_irq_status == 1) {
429 mfunc_old = mfunc;
430 dev_printk(KERN_INFO, &socket->dev->dev,
431 "TI: parallel PCI interrupts ok\n");
432 } else {
433 /* not working, back to old value */
434 mfunc = mfunc_old;
435 config_writel(socket, TI122X_MFUNC, mfunc);
436 if (gpio3 != gpio3_old)
437 config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3_old);
438 }
439
440 out:
441 if (pci_irq_status < 1) {
442 socket->cb_irq = 0;
443 dev_printk(KERN_INFO, &socket->dev->dev,
444 "Yenta TI: no PCI interrupts. Fish. "
445 "Please report.\n");
446 }
447 }
448
449
450 /* changes the irq of func1 to match that of func0 */
451 static int ti12xx_align_irqs(struct yenta_socket *socket, int *old_irq)
452 {
453 struct pci_dev *func0;
454
455 /* find func0 device */
456 func0 = pci_get_slot(socket->dev->bus, socket->dev->devfn & ~0x07);
457 if (!func0)
458 return 0;
459
460 if (old_irq)
461 *old_irq = socket->cb_irq;
462 socket->cb_irq = socket->dev->irq = func0->irq;
463
464 pci_dev_put(func0);
465
466 return 1;
467 }
468
469 /*
470 * ties INTA and INTB together. also changes the devices irq to that of
471 * the function 0 device. call from func1 only.
472 * returns 1 if INTRTIE changed, 0 otherwise.
473 */
474 static int ti12xx_tie_interrupts(struct yenta_socket *socket, int *old_irq)
475 {
476 u32 sysctl;
477 int ret;
478
479 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
480 if (sysctl & TI122X_SCR_INTRTIE)
481 return 0;
482
483 /* align */
484 ret = ti12xx_align_irqs(socket, old_irq);
485 if (!ret)
486 return 0;
487
488 /* tie */
489 sysctl |= TI122X_SCR_INTRTIE;
490 config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);
491
492 return 1;
493 }
494
495 /* undo what ti12xx_tie_interrupts() did */
496 static void ti12xx_untie_interrupts(struct yenta_socket *socket, int old_irq)
497 {
498 u32 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
499 sysctl &= ~TI122X_SCR_INTRTIE;
500 config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);
501
502 socket->cb_irq = socket->dev->irq = old_irq;
503 }
504
505 /*
506 * irqrouting for func1, plays with INTB routing
507 * only touches MFUNC for INTB routing. all other bits are taken
508 * care of in func0 already.
509 */
510 static void ti12xx_irqroute_func1(struct yenta_socket *socket)
511 {
512 u32 mfunc, mfunc_old, devctl, sysctl;
513 int pci_irq_status;
514
515 mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
516 devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
517 dev_printk(KERN_INFO, &socket->dev->dev,
518 "TI: mfunc 0x%08x, devctl 0x%02x\n",
519 mfunc, devctl);
520
521 /* if IRQs are configured as tied, align irq of func1 with func0 */
522 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
523 if (sysctl & TI122X_SCR_INTRTIE)
524 ti12xx_align_irqs(socket, NULL);
525
526 /* make sure PCI interrupts are enabled before probing */
527 ti_init(socket);
528
529 /* test PCI interrupts first. only try fixing if return value is 0! */
530 pci_irq_status = yenta_probe_cb_irq(socket);
531 if (pci_irq_status)
532 goto out;
533
534 /*
535 * We're here which means PCI interrupts are _not_ delivered. try to
536 * find the right setting
537 */
538 dev_printk(KERN_INFO, &socket->dev->dev,
539 "TI: probing PCI interrupt failed, trying to fix\n");
540
541 /* if all serial: set INTRTIE, probe again */
542 if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
543 int old_irq;
544
545 if (ti12xx_tie_interrupts(socket, &old_irq)) {
546 pci_irq_status = yenta_probe_cb_irq(socket);
547 if (pci_irq_status == 1) {
548 dev_printk(KERN_INFO, &socket->dev->dev,
549 "TI: all-serial interrupts, tied ok\n");
550 goto out;
551 }
552
553 ti12xx_untie_interrupts(socket, old_irq);
554 }
555 }
556 /* parallel PCI: route INTB, probe again */
557 else {
558 int old_irq;
559
560 switch (socket->dev->device) {
561 case PCI_DEVICE_ID_TI_1250:
562 /* the 1250 has one pin for IRQSER/INTB depending on devctl */
563 break;
564
565 case PCI_DEVICE_ID_TI_1251A:
566 case PCI_DEVICE_ID_TI_1251B:
567 case PCI_DEVICE_ID_TI_1450:
568 /*
569 * those have a pin for IRQSER/INTB plus INTB in MFUNC0
570 * we alread probed the shared pin, now go for MFUNC0
571 */
572 mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI125X_MFUNC0_INTB;
573 break;
574
575 default:
576 mfunc = (mfunc & ~TI122X_MFUNC1_MASK) | TI122X_MFUNC1_INTB;
577 break;
578 }
579
580 /* write, probe */
581 if (mfunc != mfunc_old) {
582 config_writel(socket, TI122X_MFUNC, mfunc);
583
584 pci_irq_status = yenta_probe_cb_irq(socket);
585 if (pci_irq_status == 1) {
586 dev_printk(KERN_INFO, &socket->dev->dev,
587 "TI: parallel PCI interrupts ok\n");
588 goto out;
589 }
590
591 mfunc = mfunc_old;
592 config_writel(socket, TI122X_MFUNC, mfunc);
593
594 if (pci_irq_status == -1)
595 goto out;
596 }
597
598 /* still nothing: set INTRTIE */
599 if (ti12xx_tie_interrupts(socket, &old_irq)) {
600 pci_irq_status = yenta_probe_cb_irq(socket);
601 if (pci_irq_status == 1) {
602 dev_printk(KERN_INFO, &socket->dev->dev,
603 "TI: parallel PCI interrupts, tied ok\n");
604 goto out;
605 }
606
607 ti12xx_untie_interrupts(socket, old_irq);
608 }
609 }
610
611 out:
612 if (pci_irq_status < 1) {
613 socket->cb_irq = 0;
614 dev_printk(KERN_INFO, &socket->dev->dev,
615 "TI: no PCI interrupts. Fish. Please report.\n");
616 }
617 }
618
619
620 /* Returns true value if the second slot of a two-slot controller is empty */
621 static int ti12xx_2nd_slot_empty(struct yenta_socket *socket)
622 {
623 struct pci_dev *func;
624 struct yenta_socket *slot2;
625 int devfn;
626 unsigned int state;
627 int ret = 1;
628 u32 sysctl;
629
630 /* catch the two-slot controllers */
631 switch (socket->dev->device) {
632 case PCI_DEVICE_ID_TI_1220:
633 case PCI_DEVICE_ID_TI_1221:
634 case PCI_DEVICE_ID_TI_1225:
635 case PCI_DEVICE_ID_TI_1251A:
636 case PCI_DEVICE_ID_TI_1251B:
637 case PCI_DEVICE_ID_TI_1420:
638 case PCI_DEVICE_ID_TI_1450:
639 case PCI_DEVICE_ID_TI_1451A:
640 case PCI_DEVICE_ID_TI_1520:
641 case PCI_DEVICE_ID_TI_1620:
642 case PCI_DEVICE_ID_TI_4520:
643 case PCI_DEVICE_ID_TI_4450:
644 case PCI_DEVICE_ID_TI_4451:
645 /*
646 * there are way more, but they need to be added in yenta_socket.c
647 * and pci_ids.h first anyway.
648 */
649 break;
650
651 case PCI_DEVICE_ID_TI_XX12:
652 case PCI_DEVICE_ID_TI_X515:
653 case PCI_DEVICE_ID_TI_X420:
654 case PCI_DEVICE_ID_TI_X620:
655 case PCI_DEVICE_ID_TI_XX21_XX11:
656 case PCI_DEVICE_ID_TI_7410:
657 case PCI_DEVICE_ID_TI_7610:
658 /*
659 * those are either single or dual slot CB with additional functions
660 * like 1394, smartcard reader, etc. check the TIEALL flag for them
661 * the TIEALL flag binds the IRQ of all functions toghether.
662 * we catch the single slot variants later.
663 */
664 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
665 if (sysctl & TIXX21_SCR_TIEALL)
666 return 0;
667
668 break;
669
670 /* single-slot controllers have the 2nd slot empty always :) */
671 default:
672 return 1;
673 }
674
675 /* get other slot */
676 devfn = socket->dev->devfn & ~0x07;
677 func = pci_get_slot(socket->dev->bus,
678 (socket->dev->devfn & 0x07) ? devfn : devfn | 0x01);
679 if (!func)
680 return 1;
681
682 /*
683 * check that the device id of both slots match. this is needed for the
684 * XX21 and the XX11 controller that share the same device id for single
685 * and dual slot controllers. return '2nd slot empty'. we already checked
686 * if the interrupt is tied to another function.
687 */
688 if (socket->dev->device != func->device)
689 goto out;
690
691 slot2 = pci_get_drvdata(func);
692 if (!slot2)
693 goto out;
694
695 /* check state */
696 yenta_get_status(&slot2->socket, &state);
697 if (state & SS_DETECT) {
698 ret = 0;
699 goto out;
700 }
701
702 out:
703 pci_dev_put(func);
704 return ret;
705 }
706
707 /*
708 * TI specifiy parts for the power hook.
709 *
710 * some TI's with some CB's produces interrupt storm on power on. it has been
711 * seen with atheros wlan cards on TI1225 and TI1410. solution is simply to
712 * disable any CB interrupts during this time.
713 */
714 static int ti12xx_power_hook(struct pcmcia_socket *sock, int operation)
715 {
716 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
717 u32 mfunc, devctl, sysctl;
718 u8 gpio3;
719
720 /* only POWER_PRE and POWER_POST are interesting */
721 if ((operation != HOOK_POWER_PRE) && (operation != HOOK_POWER_POST))
722 return 0;
723
724 devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
725 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
726 mfunc = config_readl(socket, TI122X_MFUNC);
727
728 /*
729 * all serial/tied: only disable when modparm set. always doing it
730 * would mean a regression for working setups 'cos it disables the
731 * interrupts for both both slots on 2-slot controllers
732 * (and users of single slot controllers where it's save have to
733 * live with setting the modparm, most don't have to anyway)
734 */
735 if (((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) &&
736 (pwr_irqs_off || ti12xx_2nd_slot_empty(socket))) {
737 switch (socket->dev->device) {
738 case PCI_DEVICE_ID_TI_1250:
739 case PCI_DEVICE_ID_TI_1251A:
740 case PCI_DEVICE_ID_TI_1251B:
741 case PCI_DEVICE_ID_TI_1450:
742 case PCI_DEVICE_ID_TI_1451A:
743 case PCI_DEVICE_ID_TI_4450:
744 case PCI_DEVICE_ID_TI_4451:
745 /* these chips have no IRQSER setting in MFUNC3 */
746 break;
747
748 default:
749 if (operation == HOOK_POWER_PRE)
750 mfunc = (mfunc & ~TI122X_MFUNC3_MASK);
751 else
752 mfunc = (mfunc & ~TI122X_MFUNC3_MASK) | TI122X_MFUNC3_IRQSER;
753 }
754
755 return 0;
756 }
757
758 /* do the job differently for func0/1 */
759 if ((PCI_FUNC(socket->dev->devfn) == 0) ||
760 ((sysctl & TI122X_SCR_INTRTIE) &&
761 (pwr_irqs_off || ti12xx_2nd_slot_empty(socket)))) {
762 /* some bridges are different */
763 switch (socket->dev->device) {
764 case PCI_DEVICE_ID_TI_1250:
765 case PCI_DEVICE_ID_TI_1251A:
766 case PCI_DEVICE_ID_TI_1251B:
767 case PCI_DEVICE_ID_TI_1450:
768 /* those oldies use gpio3 for INTA */
769 gpio3 = config_readb(socket, TI1250_GPIO3_CONTROL);
770 if (operation == HOOK_POWER_PRE)
771 gpio3 = (gpio3 & ~TI1250_GPIO_MODE_MASK) | 0x40;
772 else
773 gpio3 &= ~TI1250_GPIO_MODE_MASK;
774 config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3);
775 break;
776
777 default:
778 /* all new bridges are the same */
779 if (operation == HOOK_POWER_PRE)
780 mfunc &= ~TI122X_MFUNC0_MASK;
781 else
782 mfunc |= TI122X_MFUNC0_INTA;
783 config_writel(socket, TI122X_MFUNC, mfunc);
784 }
785 } else {
786 switch (socket->dev->device) {
787 case PCI_DEVICE_ID_TI_1251A:
788 case PCI_DEVICE_ID_TI_1251B:
789 case PCI_DEVICE_ID_TI_1450:
790 /* those have INTA elsewhere and INTB in MFUNC0 */
791 if (operation == HOOK_POWER_PRE)
792 mfunc &= ~TI122X_MFUNC0_MASK;
793 else
794 mfunc |= TI125X_MFUNC0_INTB;
795 config_writel(socket, TI122X_MFUNC, mfunc);
796
797 break;
798
799 default:
800 /* all new bridges are the same */
801 if (operation == HOOK_POWER_PRE)
802 mfunc &= ~TI122X_MFUNC1_MASK;
803 else
804 mfunc |= TI122X_MFUNC1_INTB;
805 config_writel(socket, TI122X_MFUNC, mfunc);
806 }
807 }
808
809 return 0;
810 }
811
812 static int ti12xx_override(struct yenta_socket *socket)
813 {
814 u32 val, val_orig;
815
816 /* make sure that memory burst is active */
817 val_orig = val = config_readl(socket, TI113X_SYSTEM_CONTROL);
818 if (disable_clkrun && PCI_FUNC(socket->dev->devfn) == 0) {
819 dev_printk(KERN_INFO, &socket->dev->dev,
820 "Disabling CLKRUN feature\n");
821 val |= TI113X_SCR_KEEPCLK;
822 }
823 if (!(val & TI122X_SCR_MRBURSTUP)) {
824 dev_printk(KERN_INFO, &socket->dev->dev,
825 "Enabling burst memory read transactions\n");
826 val |= TI122X_SCR_MRBURSTUP;
827 }
828 if (val_orig != val)
829 config_writel(socket, TI113X_SYSTEM_CONTROL, val);
830
831 /*
832 * Yenta expects controllers to use CSCINT to route
833 * CSC interrupts to PCI rather than INTVAL.
834 */
835 val = config_readb(socket, TI1250_DIAGNOSTIC);
836 dev_printk(KERN_INFO, &socket->dev->dev,
837 "Using %s to route CSC interrupts to PCI\n",
838 (val & TI1250_DIAG_PCI_CSC) ? "CSCINT" : "INTVAL");
839 dev_printk(KERN_INFO, &socket->dev->dev,
840 "Routing CardBus interrupts to %s\n",
841 (val & TI1250_DIAG_PCI_IREQ) ? "PCI" : "ISA");
842
843 /* do irqrouting, depending on function */
844 if (PCI_FUNC(socket->dev->devfn) == 0)
845 ti12xx_irqroute_func0(socket);
846 else
847 ti12xx_irqroute_func1(socket);
848
849 /* install power hook */
850 socket->socket.power_hook = ti12xx_power_hook;
851
852 return ti_override(socket);
853 }
854
855
856 static int ti1250_override(struct yenta_socket *socket)
857 {
858 u8 old, diag;
859
860 old = config_readb(socket, TI1250_DIAGNOSTIC);
861 diag = old & ~(TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ);
862 if (socket->cb_irq)
863 diag |= TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ;
864
865 if (diag != old) {
866 dev_printk(KERN_INFO, &socket->dev->dev,
867 "adjusting diagnostic: %02x -> %02x\n",
868 old, diag);
869 config_writeb(socket, TI1250_DIAGNOSTIC, diag);
870 }
871
872 return ti12xx_override(socket);
873 }
874
875
876 /**
877 * EnE specific part. EnE bridges are register compatible with TI bridges but
878 * have their own test registers and more important their own little problems.
879 * Some fixup code to make everybody happy (TM).
880 */
881
882 #ifdef CONFIG_YENTA_ENE_TUNE
883 /*
884 * set/clear various test bits:
885 * Defaults to clear the bit.
886 * - mask (u8) defines what bits to change
887 * - bits (u8) is the values to change them to
888 * -> it's
889 * current = (current & ~mask) | bits
890 */
891 /* pci ids of devices that wants to have the bit set */
892 #define DEVID(_vend,_dev,_subvend,_subdev,mask,bits) { \
893 .vendor = _vend, \
894 .device = _dev, \
895 .subvendor = _subvend, \
896 .subdevice = _subdev, \
897 .driver_data = ((mask) << 8 | (bits)), \
898 }
899 static struct pci_device_id ene_tune_tbl[] = {
900 /* Echo Audio products based on motorola DSP56301 and DSP56361 */
901 DEVID(PCI_VENDOR_ID_MOTOROLA, 0x1801, 0xECC0, PCI_ANY_ID,
902 ENE_TEST_C9_TLTENABLE | ENE_TEST_C9_PFENABLE, ENE_TEST_C9_TLTENABLE),
903 DEVID(PCI_VENDOR_ID_MOTOROLA, 0x3410, 0xECC0, PCI_ANY_ID,
904 ENE_TEST_C9_TLTENABLE | ENE_TEST_C9_PFENABLE, ENE_TEST_C9_TLTENABLE),
905
906 {}
907 };
908
909 static void ene_tune_bridge(struct pcmcia_socket *sock, struct pci_bus *bus)
910 {
911 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
912 struct pci_dev *dev;
913 struct pci_device_id *id = NULL;
914 u8 test_c9, old_c9, mask, bits;
915
916 list_for_each_entry(dev, &bus->devices, bus_list) {
917 id = (struct pci_device_id *) pci_match_id(ene_tune_tbl, dev);
918 if (id)
919 break;
920 }
921
922 test_c9 = old_c9 = config_readb(socket, ENE_TEST_C9);
923 if (id) {
924 mask = (id->driver_data >> 8) & 0xFF;
925 bits = id->driver_data & 0xFF;
926
927 test_c9 = (test_c9 & ~mask) | bits;
928 }
929 else
930 /* default to clear TLTEnable bit, old behaviour */
931 test_c9 &= ~ENE_TEST_C9_TLTENABLE;
932
933 dev_printk(KERN_INFO, &socket->dev->dev,
934 "EnE: chaning testregister 0xC9, %02x -> %02x\n",
935 old_c9, test_c9);
936 config_writeb(socket, ENE_TEST_C9, test_c9);
937 }
938
939 static int ene_override(struct yenta_socket *socket)
940 {
941 /* install tune_bridge() function */
942 socket->socket.tune_bridge = ene_tune_bridge;
943
944 return ti1250_override(socket);
945 }
946 #else
947 # define ene_override ti1250_override
948 #endif /* !CONFIG_YENTA_ENE_TUNE */
949
950 #endif /* _LINUX_TI113X_H */
951
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