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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / pcmcia / ti113x.h
blob5cb670e037a0c6d5f5669b3efbfa3f83e5929171
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_info(&socket->dev->dev, "TI: mfunc 0x%08x, devctl 0x%02x\n",
376 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_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_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_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_info(&socket->dev->dev, "TI: parallel PCI interrupts ok\n");
464 } else {
465 /* not working, back to old value */
466 mfunc = mfunc_old;
467 config_writel(socket, TI122X_MFUNC, mfunc);
468 if (gpio3 != gpio3_old)
469 config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3_old);
470 }
471
472 out:
473 if (pci_irq_status < 1) {
474 socket->cb_irq = 0;
475 dev_info(&socket->dev->dev,
476 "Yenta TI: no PCI interrupts. Fish. Please report.\n");
477 }
478 }
479
480
481 /* changes the irq of func1 to match that of func0 */
482 static int ti12xx_align_irqs(struct yenta_socket *socket, int *old_irq)
483 {
484 struct pci_dev *func0;
485
486 /* find func0 device */
487 func0 = pci_get_slot(socket->dev->bus, socket->dev->devfn & ~0x07);
488 if (!func0)
489 return 0;
490
491 if (old_irq)
492 *old_irq = socket->cb_irq;
493 socket->cb_irq = socket->dev->irq = func0->irq;
494
495 pci_dev_put(func0);
496
497 return 1;
498 }
499
500 /*
501 * ties INTA and INTB together. also changes the devices irq to that of
502 * the function 0 device. call from func1 only.
503 * returns 1 if INTRTIE changed, 0 otherwise.
504 */
505 static int ti12xx_tie_interrupts(struct yenta_socket *socket, int *old_irq)
506 {
507 u32 sysctl;
508 int ret;
509
510 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
511 if (sysctl & TI122X_SCR_INTRTIE)
512 return 0;
513
514 /* align */
515 ret = ti12xx_align_irqs(socket, old_irq);
516 if (!ret)
517 return 0;
518
519 /* tie */
520 sysctl |= TI122X_SCR_INTRTIE;
521 config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);
522
523 return 1;
524 }
525
526 /* undo what ti12xx_tie_interrupts() did */
527 static void ti12xx_untie_interrupts(struct yenta_socket *socket, int old_irq)
528 {
529 u32 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
530 sysctl &= ~TI122X_SCR_INTRTIE;
531 config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);
532
533 socket->cb_irq = socket->dev->irq = old_irq;
534 }
535
536 /*
537 * irqrouting for func1, plays with INTB routing
538 * only touches MFUNC for INTB routing. all other bits are taken
539 * care of in func0 already.
540 */
541 static void ti12xx_irqroute_func1(struct yenta_socket *socket)
542 {
543 u32 mfunc, mfunc_old, devctl, sysctl;
544 int pci_irq_status;
545
546 mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
547 devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
548 dev_info(&socket->dev->dev, "TI: mfunc 0x%08x, devctl 0x%02x\n",
549 mfunc, devctl);
550
551 /* if IRQs are configured as tied, align irq of func1 with func0 */
552 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
553 if (sysctl & TI122X_SCR_INTRTIE)
554 ti12xx_align_irqs(socket, NULL);
555
556 /* make sure PCI interrupts are enabled before probing */
557 ti_init(socket);
558
559 /* test PCI interrupts first. only try fixing if return value is 0! */
560 pci_irq_status = yenta_probe_cb_irq(socket);
561 if (pci_irq_status)
562 goto out;
563
564 /*
565 * We're here which means PCI interrupts are _not_ delivered. try to
566 * find the right setting
567 */
568 dev_info(&socket->dev->dev,
569 "TI: probing PCI interrupt failed, trying to fix\n");
570
571 /* if all serial: set INTRTIE, probe again */
572 if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
573 int old_irq;
574
575 if (ti12xx_tie_interrupts(socket, &old_irq)) {
576 pci_irq_status = yenta_probe_cb_irq(socket);
577 if (pci_irq_status == 1) {
578 dev_info(&socket->dev->dev,
579 "TI: all-serial interrupts, tied ok\n");
580 goto out;
581 }
582
583 ti12xx_untie_interrupts(socket, old_irq);
584 }
585 }
586 /* parallel PCI: route INTB, probe again */
587 else {
588 int old_irq;
589
590 switch (socket->dev->device) {
591 case PCI_DEVICE_ID_TI_1250:
592 /* the 1250 has one pin for IRQSER/INTB depending on devctl */
593 break;
594
595 case PCI_DEVICE_ID_TI_1251A:
596 case PCI_DEVICE_ID_TI_1251B:
597 case PCI_DEVICE_ID_TI_1450:
598 /*
599 * those have a pin for IRQSER/INTB plus INTB in MFUNC0
600 * we alread probed the shared pin, now go for MFUNC0
601 */
602 mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI125X_MFUNC0_INTB;
603 break;
604
605 default:
606 mfunc = (mfunc & ~TI122X_MFUNC1_MASK) | TI122X_MFUNC1_INTB;
607 break;
608 }
609
610 /* write, probe */
611 if (mfunc != mfunc_old) {
612 config_writel(socket, TI122X_MFUNC, mfunc);
613
614 pci_irq_status = yenta_probe_cb_irq(socket);
615 if (pci_irq_status == 1) {
616 dev_info(&socket->dev->dev,
617 "TI: parallel PCI interrupts ok\n");
618 goto out;
619 }
620
621 mfunc = mfunc_old;
622 config_writel(socket, TI122X_MFUNC, mfunc);
623
624 if (pci_irq_status == -1)
625 goto out;
626 }
627
628 /* still nothing: set INTRTIE */
629 if (ti12xx_tie_interrupts(socket, &old_irq)) {
630 pci_irq_status = yenta_probe_cb_irq(socket);
631 if (pci_irq_status == 1) {
632 dev_info(&socket->dev->dev,
633 "TI: parallel PCI interrupts, tied ok\n");
634 goto out;
635 }
636
637 ti12xx_untie_interrupts(socket, old_irq);
638 }
639 }
640
641 out:
642 if (pci_irq_status < 1) {
643 socket->cb_irq = 0;
644 dev_info(&socket->dev->dev,
645 "TI: no PCI interrupts. Fish. Please report.\n");
646 }
647 }
648
649
650 /* Returns true value if the second slot of a two-slot controller is empty */
651 static int ti12xx_2nd_slot_empty(struct yenta_socket *socket)
652 {
653 struct pci_dev *func;
654 struct yenta_socket *slot2;
655 int devfn;
656 unsigned int state;
657 int ret = 1;
658 u32 sysctl;
659
660 /* catch the two-slot controllers */
661 switch (socket->dev->device) {
662 case PCI_DEVICE_ID_TI_1220:
663 case PCI_DEVICE_ID_TI_1221:
664 case PCI_DEVICE_ID_TI_1225:
665 case PCI_DEVICE_ID_TI_1251A:
666 case PCI_DEVICE_ID_TI_1251B:
667 case PCI_DEVICE_ID_TI_1420:
668 case PCI_DEVICE_ID_TI_1450:
669 case PCI_DEVICE_ID_TI_1451A:
670 case PCI_DEVICE_ID_TI_1520:
671 case PCI_DEVICE_ID_TI_1620:
672 case PCI_DEVICE_ID_TI_4520:
673 case PCI_DEVICE_ID_TI_4450:
674 case PCI_DEVICE_ID_TI_4451:
675 /*
676 * there are way more, but they need to be added in yenta_socket.c
677 * and pci_ids.h first anyway.
678 */
679 break;
680
681 case PCI_DEVICE_ID_TI_XX12:
682 case PCI_DEVICE_ID_TI_X515:
683 case PCI_DEVICE_ID_TI_X420:
684 case PCI_DEVICE_ID_TI_X620:
685 case PCI_DEVICE_ID_TI_XX21_XX11:
686 case PCI_DEVICE_ID_TI_7410:
687 case PCI_DEVICE_ID_TI_7610:
688 /*
689 * those are either single or dual slot CB with additional functions
690 * like 1394, smartcard reader, etc. check the TIEALL flag for them
691 * the TIEALL flag binds the IRQ of all functions together.
692 * we catch the single slot variants later.
693 */
694 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
695 if (sysctl & TIXX21_SCR_TIEALL)
696 return 0;
697
698 break;
699
700 /* single-slot controllers have the 2nd slot empty always :) */
701 default:
702 return 1;
703 }
704
705 /* get other slot */
706 devfn = socket->dev->devfn & ~0x07;
707 func = pci_get_slot(socket->dev->bus,
708 (socket->dev->devfn & 0x07) ? devfn : devfn | 0x01);
709 if (!func)
710 return 1;
711
712 /*
713 * check that the device id of both slots match. this is needed for the
714 * XX21 and the XX11 controller that share the same device id for single
715 * and dual slot controllers. return '2nd slot empty'. we already checked
716 * if the interrupt is tied to another function.
717 */
718 if (socket->dev->device != func->device)
719 goto out;
720
721 slot2 = pci_get_drvdata(func);
722 if (!slot2)
723 goto out;
724
725 /* check state */
726 yenta_get_status(&slot2->socket, &state);
727 if (state & SS_DETECT) {
728 ret = 0;
729 goto out;
730 }
731
732 out:
733 pci_dev_put(func);
734 return ret;
735 }
736
737 /*
738 * TI specifiy parts for the power hook.
739 *
740 * some TI's with some CB's produces interrupt storm on power on. it has been
741 * seen with atheros wlan cards on TI1225 and TI1410. solution is simply to
742 * disable any CB interrupts during this time.
743 */
744 static int ti12xx_power_hook(struct pcmcia_socket *sock, int operation)
745 {
746 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
747 u32 mfunc, devctl, sysctl;
748 u8 gpio3;
749
750 /* only POWER_PRE and POWER_POST are interesting */
751 if ((operation != HOOK_POWER_PRE) && (operation != HOOK_POWER_POST))
752 return 0;
753
754 devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
755 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
756 mfunc = config_readl(socket, TI122X_MFUNC);
757
758 /*
759 * all serial/tied: only disable when modparm set. always doing it
760 * would mean a regression for working setups 'cos it disables the
761 * interrupts for both both slots on 2-slot controllers
762 * (and users of single slot controllers where it's save have to
763 * live with setting the modparm, most don't have to anyway)
764 */
765 if (((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) &&
766 (pwr_irqs_off || ti12xx_2nd_slot_empty(socket))) {
767 switch (socket->dev->device) {
768 case PCI_DEVICE_ID_TI_1250:
769 case PCI_DEVICE_ID_TI_1251A:
770 case PCI_DEVICE_ID_TI_1251B:
771 case PCI_DEVICE_ID_TI_1450:
772 case PCI_DEVICE_ID_TI_1451A:
773 case PCI_DEVICE_ID_TI_4450:
774 case PCI_DEVICE_ID_TI_4451:
775 /* these chips have no IRQSER setting in MFUNC3 */
776 break;
777
778 default:
779 if (operation == HOOK_POWER_PRE)
780 mfunc = (mfunc & ~TI122X_MFUNC3_MASK);
781 else
782 mfunc = (mfunc & ~TI122X_MFUNC3_MASK) | TI122X_MFUNC3_IRQSER;
783 }
784
785 return 0;
786 }
787
788 /* do the job differently for func0/1 */
789 if ((PCI_FUNC(socket->dev->devfn) == 0) ||
790 ((sysctl & TI122X_SCR_INTRTIE) &&
791 (pwr_irqs_off || ti12xx_2nd_slot_empty(socket)))) {
792 /* some bridges are different */
793 switch (socket->dev->device) {
794 case PCI_DEVICE_ID_TI_1250:
795 case PCI_DEVICE_ID_TI_1251A:
796 case PCI_DEVICE_ID_TI_1251B:
797 case PCI_DEVICE_ID_TI_1450:
798 /* those oldies use gpio3 for INTA */
799 gpio3 = config_readb(socket, TI1250_GPIO3_CONTROL);
800 if (operation == HOOK_POWER_PRE)
801 gpio3 = (gpio3 & ~TI1250_GPIO_MODE_MASK) | 0x40;
802 else
803 gpio3 &= ~TI1250_GPIO_MODE_MASK;
804 config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3);
805 break;
806
807 default:
808 /* all new bridges are the same */
809 if (operation == HOOK_POWER_PRE)
810 mfunc &= ~TI122X_MFUNC0_MASK;
811 else
812 mfunc |= TI122X_MFUNC0_INTA;
813 config_writel(socket, TI122X_MFUNC, mfunc);
814 }
815 } else {
816 switch (socket->dev->device) {
817 case PCI_DEVICE_ID_TI_1251A:
818 case PCI_DEVICE_ID_TI_1251B:
819 case PCI_DEVICE_ID_TI_1450:
820 /* those have INTA elsewhere and INTB in MFUNC0 */
821 if (operation == HOOK_POWER_PRE)
822 mfunc &= ~TI122X_MFUNC0_MASK;
823 else
824 mfunc |= TI125X_MFUNC0_INTB;
825 config_writel(socket, TI122X_MFUNC, mfunc);
826
827 break;
828
829 default:
830 /* all new bridges are the same */
831 if (operation == HOOK_POWER_PRE)
832 mfunc &= ~TI122X_MFUNC1_MASK;
833 else
834 mfunc |= TI122X_MFUNC1_INTB;
835 config_writel(socket, TI122X_MFUNC, mfunc);
836 }
837 }
838
839 return 0;
840 }
841
842 static int ti12xx_override(struct yenta_socket *socket)
843 {
844 u32 val, val_orig;
845
846 /* make sure that memory burst is active */
847 val_orig = val = config_readl(socket, TI113X_SYSTEM_CONTROL);
848 if (disable_clkrun && PCI_FUNC(socket->dev->devfn) == 0) {
849 dev_info(&socket->dev->dev, "Disabling CLKRUN feature\n");
850 val |= TI113X_SCR_KEEPCLK;
851 }
852 if (!(val & TI122X_SCR_MRBURSTUP)) {
853 dev_info(&socket->dev->dev,
854 "Enabling burst memory read transactions\n");
855 val |= TI122X_SCR_MRBURSTUP;
856 }
857 if (val_orig != val)
858 config_writel(socket, TI113X_SYSTEM_CONTROL, val);
859
860 /*
861 * Yenta expects controllers to use CSCINT to route
862 * CSC interrupts to PCI rather than INTVAL.
863 */
864 val = config_readb(socket, TI1250_DIAGNOSTIC);
865 dev_info(&socket->dev->dev, "Using %s to route CSC interrupts to PCI\n",
866 (val & TI1250_DIAG_PCI_CSC) ? "CSCINT" : "INTVAL");
867 dev_info(&socket->dev->dev, "Routing CardBus interrupts to %s\n",
868 (val & TI1250_DIAG_PCI_IREQ) ? "PCI" : "ISA");
869
870 /* do irqrouting, depending on function */
871 if (PCI_FUNC(socket->dev->devfn) == 0)
872 ti12xx_irqroute_func0(socket);
873 else
874 ti12xx_irqroute_func1(socket);
875
876 /* install power hook */
877 socket->socket.power_hook = ti12xx_power_hook;
878
879 return ti_override(socket);
880 }
881
882
883 static int ti1250_override(struct yenta_socket *socket)
884 {
885 u8 old, diag;
886
887 old = config_readb(socket, TI1250_DIAGNOSTIC);
888 diag = old & ~(TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ);
889 if (socket->cb_irq)
890 diag |= TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ;
891
892 if (diag != old) {
893 dev_info(&socket->dev->dev,
894 "adjusting diagnostic: %02x -> %02x\n",
895 old, diag);
896 config_writeb(socket, TI1250_DIAGNOSTIC, diag);
897 }
898
899 return ti12xx_override(socket);
900 }
901
902
903 /**
904 * EnE specific part. EnE bridges are register compatible with TI bridges but
905 * have their own test registers and more important their own little problems.
906 * Some fixup code to make everybody happy (TM).
907 */
908
909 #ifdef CONFIG_YENTA_ENE_TUNE
910 /*
911 * set/clear various test bits:
912 * Defaults to clear the bit.
913 * - mask (u8) defines what bits to change
914 * - bits (u8) is the values to change them to
915 * -> it's
916 * current = (current & ~mask) | bits
917 */
918 /* pci ids of devices that wants to have the bit set */
919 #define DEVID(_vend,_dev,_subvend,_subdev,mask,bits) { \
920 .vendor = _vend, \
921 .device = _dev, \
922 .subvendor = _subvend, \
923 .subdevice = _subdev, \
924 .driver_data = ((mask) << 8 | (bits)), \
925 }
926 static struct pci_device_id ene_tune_tbl[] = {
927 /* Echo Audio products based on motorola DSP56301 and DSP56361 */
928 DEVID(PCI_VENDOR_ID_MOTOROLA, 0x1801, 0xECC0, PCI_ANY_ID,
929 ENE_TEST_C9_TLTENABLE | ENE_TEST_C9_PFENABLE, ENE_TEST_C9_TLTENABLE),
930 DEVID(PCI_VENDOR_ID_MOTOROLA, 0x3410, 0xECC0, PCI_ANY_ID,
931 ENE_TEST_C9_TLTENABLE | ENE_TEST_C9_PFENABLE, ENE_TEST_C9_TLTENABLE),
932
933 {}
934 };
935
936 static void ene_tune_bridge(struct pcmcia_socket *sock, struct pci_bus *bus)
937 {
938 struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
939 struct pci_dev *dev;
940 struct pci_device_id *id = NULL;
941 u8 test_c9, old_c9, mask, bits;
942
943 list_for_each_entry(dev, &bus->devices, bus_list) {
944 id = (struct pci_device_id *) pci_match_id(ene_tune_tbl, dev);
945 if (id)
946 break;
947 }
948
949 test_c9 = old_c9 = config_readb(socket, ENE_TEST_C9);
950 if (id) {
951 mask = (id->driver_data >> 8) & 0xFF;
952 bits = id->driver_data & 0xFF;
953
954 test_c9 = (test_c9 & ~mask) | bits;
955 }
956 else
957 /* default to clear TLTEnable bit, old behaviour */
958 test_c9 &= ~ENE_TEST_C9_TLTENABLE;
959
960 dev_info(&socket->dev->dev,
961 "EnE: changing testregister 0xC9, %02x -> %02x\n",
962 old_c9, test_c9);
963 config_writeb(socket, ENE_TEST_C9, test_c9);
964 }
965
966 static int ene_override(struct yenta_socket *socket)
967 {
968 /* install tune_bridge() function */
969 socket->socket.tune_bridge = ene_tune_bridge;
970
971 return ti1250_override(socket);
972 }
973 #else
974 # define ene_override ti1250_override
975 #endif /* !CONFIG_YENTA_ENE_TUNE */
976
977 #endif /* _LINUX_TI113X_H */
978
Linux with added FPC-III support