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Linux-2.6.12-rc2
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / aic7xxx / aic79xx_pci.c
blob4c3bb7bb8420204ddf6ce937d9be8ccd2bb5c1df
1 /*
2 * Product specific probe and attach routines for:
3 * aic7901 and aic7902 SCSI controllers
4 *
5 * Copyright (c) 1994-2001 Justin T. Gibbs.
6 * Copyright (c) 2000-2002 Adaptec Inc.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions, and the following disclaimer,
14 * without modification.
15 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
16 * substantially similar to the "NO WARRANTY" disclaimer below
17 * ("Disclaimer") and any redistribution must be conditioned upon
18 * including a substantially similar Disclaimer requirement for further
19 * binary redistribution.
20 * 3. Neither the names of the above-listed copyright holders nor the names
21 * of any contributors may be used to endorse or promote products derived
22 * from this software without specific prior written permission.
23 *
24 * Alternatively, this software may be distributed under the terms of the
25 * GNU General Public License ("GPL") version 2 as published by the Free
26 * Software Foundation.
27 *
28 * NO WARRANTY
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
38 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
39 * POSSIBILITY OF SUCH DAMAGES.
40 *
41 * $Id: //depot/aic7xxx/aic7xxx/aic79xx_pci.c#77 $
42 *
43 * $FreeBSD$
44 */
45
46 #ifdef __linux__
47 #include "aic79xx_osm.h"
48 #include "aic79xx_inline.h"
49 #else
50 #include <dev/aic7xxx/aic79xx_osm.h>
51 #include <dev/aic7xxx/aic79xx_inline.h>
52 #endif
53
54 #include "aic79xx_pci.h"
55
56 static __inline uint64_t
57 ahd_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
58 {
59 uint64_t id;
60
61 id = subvendor
62 | (subdevice << 16)
63 | ((uint64_t)vendor << 32)
64 | ((uint64_t)device << 48);
65
66 return (id);
67 }
68
69 #define ID_AIC7902_PCI_REV_A4 0x3
70 #define ID_AIC7902_PCI_REV_B0 0x10
71 #define SUBID_HP 0x0E11
72
73 #define DEVID_9005_HOSTRAID(id) ((id) & 0x80)
74
75 #define DEVID_9005_TYPE(id) ((id) & 0xF)
76 #define DEVID_9005_TYPE_HBA 0x0 /* Standard Card */
77 #define DEVID_9005_TYPE_HBA_2EXT 0x1 /* 2 External Ports */
78 #define DEVID_9005_TYPE_IROC 0x8 /* Raid(0,1,10) Card */
79 #define DEVID_9005_TYPE_MB 0xF /* On Motherboard */
80
81 #define DEVID_9005_MFUNC(id) ((id) & 0x10)
82
83 #define DEVID_9005_PACKETIZED(id) ((id) & 0x8000)
84
85 #define SUBID_9005_TYPE(id) ((id) & 0xF)
86 #define SUBID_9005_TYPE_HBA 0x0 /* Standard Card */
87 #define SUBID_9005_TYPE_MB 0xF /* On Motherboard */
88
89 #define SUBID_9005_AUTOTERM(id) (((id) & 0x10) == 0)
90
91 #define SUBID_9005_LEGACYCONN_FUNC(id) ((id) & 0x20)
92
93 #define SUBID_9005_SEEPTYPE(id) ((id) & 0x0C0) >> 6)
94 #define SUBID_9005_SEEPTYPE_NONE 0x0
95 #define SUBID_9005_SEEPTYPE_4K 0x1
96
97 static ahd_device_setup_t ahd_aic7901_setup;
98 static ahd_device_setup_t ahd_aic7901A_setup;
99 static ahd_device_setup_t ahd_aic7902_setup;
100 static ahd_device_setup_t ahd_aic790X_setup;
101
102 struct ahd_pci_identity ahd_pci_ident_table [] =
103 {
104 /* aic7901 based controllers */
105 {
106 ID_AHA_29320A,
107 ID_ALL_MASK,
108 "Adaptec 29320A Ultra320 SCSI adapter",
109 ahd_aic7901_setup
110 },
111 {
112 ID_AHA_29320ALP,
113 ID_ALL_MASK,
114 "Adaptec 29320ALP Ultra320 SCSI adapter",
115 ahd_aic7901_setup
116 },
117 /* aic7902 based controllers */
118 {
119 ID_AHA_29320,
120 ID_ALL_MASK,
121 "Adaptec 29320 Ultra320 SCSI adapter",
122 ahd_aic7902_setup
123 },
124 {
125 ID_AHA_29320B,
126 ID_ALL_MASK,
127 "Adaptec 29320B Ultra320 SCSI adapter",
128 ahd_aic7902_setup
129 },
130 {
131 ID_AHA_29320LP,
132 ID_ALL_MASK,
133 "Adaptec 29320LP Ultra320 SCSI adapter",
134 ahd_aic7901A_setup
135 },
136 {
137 ID_AHA_39320,
138 ID_ALL_MASK,
139 "Adaptec 39320 Ultra320 SCSI adapter",
140 ahd_aic7902_setup
141 },
142 {
143 ID_AHA_39320_B,
144 ID_ALL_MASK,
145 "Adaptec 39320 Ultra320 SCSI adapter",
146 ahd_aic7902_setup
147 },
148 {
149 ID_AHA_39320A,
150 ID_ALL_MASK,
151 "Adaptec 39320A Ultra320 SCSI adapter",
152 ahd_aic7902_setup
153 },
154 {
155 ID_AHA_39320D,
156 ID_ALL_MASK,
157 "Adaptec 39320D Ultra320 SCSI adapter",
158 ahd_aic7902_setup
159 },
160 {
161 ID_AHA_39320D_HP,
162 ID_ALL_MASK,
163 "Adaptec (HP OEM) 39320D Ultra320 SCSI adapter",
164 ahd_aic7902_setup
165 },
166 {
167 ID_AHA_39320D_B,
168 ID_ALL_MASK,
169 "Adaptec 39320D Ultra320 SCSI adapter",
170 ahd_aic7902_setup
171 },
172 {
173 ID_AHA_39320D_B_HP,
174 ID_ALL_MASK,
175 "Adaptec (HP OEM) 39320D Ultra320 SCSI adapter",
176 ahd_aic7902_setup
177 },
178 /* Generic chip probes for devices we don't know 'exactly' */
179 {
180 ID_AIC7901 & ID_9005_GENERIC_MASK,
181 ID_9005_GENERIC_MASK,
182 "Adaptec AIC7901 Ultra320 SCSI adapter",
183 ahd_aic7901_setup
184 },
185 {
186 ID_AIC7901A & ID_DEV_VENDOR_MASK,
187 ID_DEV_VENDOR_MASK,
188 "Adaptec AIC7901A Ultra320 SCSI adapter",
189 ahd_aic7901A_setup
190 },
191 {
192 ID_AIC7902 & ID_9005_GENERIC_MASK,
193 ID_9005_GENERIC_MASK,
194 "Adaptec AIC7902 Ultra320 SCSI adapter",
195 ahd_aic7902_setup
196 }
197 };
198
199 const u_int ahd_num_pci_devs = NUM_ELEMENTS(ahd_pci_ident_table);
200
201 #define DEVCONFIG 0x40
202 #define PCIXINITPAT 0x0000E000ul
203 #define PCIXINIT_PCI33_66 0x0000E000ul
204 #define PCIXINIT_PCIX50_66 0x0000C000ul
205 #define PCIXINIT_PCIX66_100 0x0000A000ul
206 #define PCIXINIT_PCIX100_133 0x00008000ul
207 #define PCI_BUS_MODES_INDEX(devconfig) \
208 (((devconfig) & PCIXINITPAT) >> 13)
209 static const char *pci_bus_modes[] =
210 {
211 "PCI bus mode unknown",
212 "PCI bus mode unknown",
213 "PCI bus mode unknown",
214 "PCI bus mode unknown",
215 "PCI-X 101-133Mhz",
216 "PCI-X 67-100Mhz",
217 "PCI-X 50-66Mhz",
218 "PCI 33 or 66Mhz"
219 };
220
221 #define TESTMODE 0x00000800ul
222 #define IRDY_RST 0x00000200ul
223 #define FRAME_RST 0x00000100ul
224 #define PCI64BIT 0x00000080ul
225 #define MRDCEN 0x00000040ul
226 #define ENDIANSEL 0x00000020ul
227 #define MIXQWENDIANEN 0x00000008ul
228 #define DACEN 0x00000004ul
229 #define STPWLEVEL 0x00000002ul
230 #define QWENDIANSEL 0x00000001ul
231
232 #define DEVCONFIG1 0x44
233 #define PREQDIS 0x01
234
235 #define CSIZE_LATTIME 0x0c
236 #define CACHESIZE 0x000000fful
237 #define LATTIME 0x0000ff00ul
238
239 static int ahd_check_extport(struct ahd_softc *ahd);
240 static void ahd_configure_termination(struct ahd_softc *ahd,
241 u_int adapter_control);
242 static void ahd_pci_split_intr(struct ahd_softc *ahd, u_int intstat);
243
244 struct ahd_pci_identity *
245 ahd_find_pci_device(ahd_dev_softc_t pci)
246 {
247 uint64_t full_id;
248 uint16_t device;
249 uint16_t vendor;
250 uint16_t subdevice;
251 uint16_t subvendor;
252 struct ahd_pci_identity *entry;
253 u_int i;
254
255 vendor = ahd_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
256 device = ahd_pci_read_config(pci, PCIR_DEVICE, /*bytes*/2);
257 subvendor = ahd_pci_read_config(pci, PCIR_SUBVEND_0, /*bytes*/2);
258 subdevice = ahd_pci_read_config(pci, PCIR_SUBDEV_0, /*bytes*/2);
259 full_id = ahd_compose_id(device,
260 vendor,
261 subdevice,
262 subvendor);
263
264 /*
265 * Controllers, mask out the IROC/HostRAID bit
266 */
267
268 full_id &= ID_ALL_IROC_MASK;
269
270 for (i = 0; i < ahd_num_pci_devs; i++) {
271 entry = &ahd_pci_ident_table[i];
272 if (entry->full_id == (full_id & entry->id_mask)) {
273 /* Honor exclusion entries. */
274 if (entry->name == NULL)
275 return (NULL);
276 return (entry);
277 }
278 }
279 return (NULL);
280 }
281
282 int
283 ahd_pci_config(struct ahd_softc *ahd, struct ahd_pci_identity *entry)
284 {
285 struct scb_data *shared_scb_data;
286 u_long l;
287 u_int command;
288 uint32_t devconfig;
289 uint16_t subvendor;
290 int error;
291
292 shared_scb_data = NULL;
293 ahd->description = entry->name;
294 /*
295 * Record if this is an HP board.
296 */
297 subvendor = ahd_pci_read_config(ahd->dev_softc,
298 PCIR_SUBVEND_0, /*bytes*/2);
299 if (subvendor == SUBID_HP)
300 ahd->flags |= AHD_HP_BOARD;
301
302 error = entry->setup(ahd);
303 if (error != 0)
304 return (error);
305
306 devconfig = ahd_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4);
307 if ((devconfig & PCIXINITPAT) == PCIXINIT_PCI33_66) {
308 ahd->chip |= AHD_PCI;
309 /* Disable PCIX workarounds when running in PCI mode. */
310 ahd->bugs &= ~AHD_PCIX_BUG_MASK;
311 } else {
312 ahd->chip |= AHD_PCIX;
313 }
314 ahd->bus_description = pci_bus_modes[PCI_BUS_MODES_INDEX(devconfig)];
315
316 ahd_power_state_change(ahd, AHD_POWER_STATE_D0);
317
318 error = ahd_pci_map_registers(ahd);
319 if (error != 0)
320 return (error);
321
322 /*
323 * If we need to support high memory, enable dual
324 * address cycles. This bit must be set to enable
325 * high address bit generation even if we are on a
326 * 64bit bus (PCI64BIT set in devconfig).
327 */
328 if ((ahd->flags & (AHD_39BIT_ADDRESSING|AHD_64BIT_ADDRESSING)) != 0) {
329 uint32_t devconfig;
330
331 if (bootverbose)
332 printf("%s: Enabling 39Bit Addressing\n",
333 ahd_name(ahd));
334 devconfig = ahd_pci_read_config(ahd->dev_softc,
335 DEVCONFIG, /*bytes*/4);
336 devconfig |= DACEN;
337 ahd_pci_write_config(ahd->dev_softc, DEVCONFIG,
338 devconfig, /*bytes*/4);
339 }
340
341 /* Ensure busmastering is enabled */
342 command = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/2);
343 command |= PCIM_CMD_BUSMASTEREN;
344 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, command, /*bytes*/2);
345
346 error = ahd_softc_init(ahd);
347 if (error != 0)
348 return (error);
349
350 ahd->bus_intr = ahd_pci_intr;
351
352 error = ahd_reset(ahd, /*reinit*/FALSE);
353 if (error != 0)
354 return (ENXIO);
355
356 ahd->pci_cachesize =
357 ahd_pci_read_config(ahd->dev_softc, CSIZE_LATTIME,
358 /*bytes*/1) & CACHESIZE;
359 ahd->pci_cachesize *= 4;
360
361 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
362 /* See if we have a SEEPROM and perform auto-term */
363 error = ahd_check_extport(ahd);
364 if (error != 0)
365 return (error);
366
367 /* Core initialization */
368 error = ahd_init(ahd);
369 if (error != 0)
370 return (error);
371
372 /*
373 * Allow interrupts now that we are completely setup.
374 */
375 error = ahd_pci_map_int(ahd);
376 if (error != 0)
377 return (error);
378
379 ahd_list_lock(&l);
380 /*
381 * Link this softc in with all other ahd instances.
382 */
383 ahd_softc_insert(ahd);
384 ahd_list_unlock(&l);
385 return (0);
386 }
387
388 /*
389 * Perform some simple tests that should catch situations where
390 * our registers are invalidly mapped.
391 */
392 int
393 ahd_pci_test_register_access(struct ahd_softc *ahd)
394 {
395 uint32_t cmd;
396 u_int targpcistat;
397 u_int pci_status1;
398 int error;
399 uint8_t hcntrl;
400
401 error = EIO;
402
403 /*
404 * Enable PCI error interrupt status, but suppress NMIs
405 * generated by SERR raised due to target aborts.
406 */
407 cmd = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/2);
408 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
409 cmd & ~PCIM_CMD_SERRESPEN, /*bytes*/2);
410
411 /*
412 * First a simple test to see if any
413 * registers can be read. Reading
414 * HCNTRL has no side effects and has
415 * at least one bit that is guaranteed to
416 * be zero so it is a good register to
417 * use for this test.
418 */
419 hcntrl = ahd_inb(ahd, HCNTRL);
420 if (hcntrl == 0xFF)
421 goto fail;
422
423 /*
424 * Next create a situation where write combining
425 * or read prefetching could be initiated by the
426 * CPU or host bridge. Our device does not support
427 * either, so look for data corruption and/or flaged
428 * PCI errors. First pause without causing another
429 * chip reset.
430 */
431 hcntrl &= ~CHIPRST;
432 ahd_outb(ahd, HCNTRL, hcntrl|PAUSE);
433 while (ahd_is_paused(ahd) == 0)
434 ;
435
436 /* Clear any PCI errors that occurred before our driver attached. */
437 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
438 targpcistat = ahd_inb(ahd, TARGPCISTAT);
439 ahd_outb(ahd, TARGPCISTAT, targpcistat);
440 pci_status1 = ahd_pci_read_config(ahd->dev_softc,
441 PCIR_STATUS + 1, /*bytes*/1);
442 ahd_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
443 pci_status1, /*bytes*/1);
444 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
445 ahd_outb(ahd, CLRINT, CLRPCIINT);
446
447 ahd_outb(ahd, SEQCTL0, PERRORDIS);
448 ahd_outl(ahd, SRAM_BASE, 0x5aa555aa);
449 if (ahd_inl(ahd, SRAM_BASE) != 0x5aa555aa)
450 goto fail;
451
452 if ((ahd_inb(ahd, INTSTAT) & PCIINT) != 0) {
453 u_int targpcistat;
454
455 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
456 targpcistat = ahd_inb(ahd, TARGPCISTAT);
457 if ((targpcistat & STA) != 0)
458 goto fail;
459 }
460
461 error = 0;
462
463 fail:
464 if ((ahd_inb(ahd, INTSTAT) & PCIINT) != 0) {
465
466 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
467 targpcistat = ahd_inb(ahd, TARGPCISTAT);
468
469 /* Silently clear any latched errors. */
470 ahd_outb(ahd, TARGPCISTAT, targpcistat);
471 pci_status1 = ahd_pci_read_config(ahd->dev_softc,
472 PCIR_STATUS + 1, /*bytes*/1);
473 ahd_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
474 pci_status1, /*bytes*/1);
475 ahd_outb(ahd, CLRINT, CLRPCIINT);
476 }
477 ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS);
478 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, cmd, /*bytes*/2);
479 return (error);
480 }
481
482 /*
483 * Check the external port logic for a serial eeprom
484 * and termination/cable detection contrls.
485 */
486 static int
487 ahd_check_extport(struct ahd_softc *ahd)
488 {
489 struct vpd_config vpd;
490 struct seeprom_config *sc;
491 u_int adapter_control;
492 int have_seeprom;
493 int error;
494
495 sc = ahd->seep_config;
496 have_seeprom = ahd_acquire_seeprom(ahd);
497 if (have_seeprom) {
498 u_int start_addr;
499
500 /*
501 * Fetch VPD for this function and parse it.
502 */
503 if (bootverbose)
504 printf("%s: Reading VPD from SEEPROM...",
505 ahd_name(ahd));
506
507 /* Address is always in units of 16bit words */
508 start_addr = ((2 * sizeof(*sc))
509 + (sizeof(vpd) * (ahd->channel - 'A'))) / 2;
510
511 error = ahd_read_seeprom(ahd, (uint16_t *)&vpd,
512 start_addr, sizeof(vpd)/2,
513 /*bytestream*/TRUE);
514 if (error == 0)
515 error = ahd_parse_vpddata(ahd, &vpd);
516 if (bootverbose)
517 printf("%s: VPD parsing %s\n",
518 ahd_name(ahd),
519 error == 0 ? "successful" : "failed");
520
521 if (bootverbose)
522 printf("%s: Reading SEEPROM...", ahd_name(ahd));
523
524 /* Address is always in units of 16bit words */
525 start_addr = (sizeof(*sc) / 2) * (ahd->channel - 'A');
526
527 error = ahd_read_seeprom(ahd, (uint16_t *)sc,
528 start_addr, sizeof(*sc)/2,
529 /*bytestream*/FALSE);
530
531 if (error != 0) {
532 printf("Unable to read SEEPROM\n");
533 have_seeprom = 0;
534 } else {
535 have_seeprom = ahd_verify_cksum(sc);
536
537 if (bootverbose) {
538 if (have_seeprom == 0)
539 printf ("checksum error\n");
540 else
541 printf ("done.\n");
542 }
543 }
544 ahd_release_seeprom(ahd);
545 }
546
547 if (!have_seeprom) {
548 u_int nvram_scb;
549
550 /*
551 * Pull scratch ram settings and treat them as
552 * if they are the contents of an seeprom if
553 * the 'ADPT', 'BIOS', or 'ASPI' signature is found
554 * in SCB 0xFF. We manually compose the data as 16bit
555 * values to avoid endian issues.
556 */
557 ahd_set_scbptr(ahd, 0xFF);
558 nvram_scb = ahd_inb_scbram(ahd, SCB_BASE + NVRAM_SCB_OFFSET);
559 if (nvram_scb != 0xFF
560 && ((ahd_inb_scbram(ahd, SCB_BASE + 0) == 'A'
561 && ahd_inb_scbram(ahd, SCB_BASE + 1) == 'D'
562 && ahd_inb_scbram(ahd, SCB_BASE + 2) == 'P'
563 && ahd_inb_scbram(ahd, SCB_BASE + 3) == 'T')
564 || (ahd_inb_scbram(ahd, SCB_BASE + 0) == 'B'
565 && ahd_inb_scbram(ahd, SCB_BASE + 1) == 'I'
566 && ahd_inb_scbram(ahd, SCB_BASE + 2) == 'O'
567 && ahd_inb_scbram(ahd, SCB_BASE + 3) == 'S')
568 || (ahd_inb_scbram(ahd, SCB_BASE + 0) == 'A'
569 && ahd_inb_scbram(ahd, SCB_BASE + 1) == 'S'
570 && ahd_inb_scbram(ahd, SCB_BASE + 2) == 'P'
571 && ahd_inb_scbram(ahd, SCB_BASE + 3) == 'I'))) {
572 uint16_t *sc_data;
573 int i;
574
575 ahd_set_scbptr(ahd, nvram_scb);
576 sc_data = (uint16_t *)sc;
577 for (i = 0; i < 64; i += 2)
578 *sc_data++ = ahd_inw_scbram(ahd, SCB_BASE+i);
579 have_seeprom = ahd_verify_cksum(sc);
580 if (have_seeprom)
581 ahd->flags |= AHD_SCB_CONFIG_USED;
582 }
583 }
584
585 #if AHD_DEBUG
586 if (have_seeprom != 0
587 && (ahd_debug & AHD_DUMP_SEEPROM) != 0) {
588 uint16_t *sc_data;
589 int i;
590
591 printf("%s: Seeprom Contents:", ahd_name(ahd));
592 sc_data = (uint16_t *)sc;
593 for (i = 0; i < (sizeof(*sc)); i += 2)
594 printf("\n\t0x%.4x", sc_data[i]);
595 printf("\n");
596 }
597 #endif
598
599 if (!have_seeprom) {
600 if (bootverbose)
601 printf("%s: No SEEPROM available.\n", ahd_name(ahd));
602 ahd->flags |= AHD_USEDEFAULTS;
603 error = ahd_default_config(ahd);
604 adapter_control = CFAUTOTERM|CFSEAUTOTERM;
605 free(ahd->seep_config, M_DEVBUF);
606 ahd->seep_config = NULL;
607 } else {
608 error = ahd_parse_cfgdata(ahd, sc);
609 adapter_control = sc->adapter_control;
610 }
611 if (error != 0)
612 return (error);
613
614 ahd_configure_termination(ahd, adapter_control);
615
616 return (0);
617 }
618
619 static void
620 ahd_configure_termination(struct ahd_softc *ahd, u_int adapter_control)
621 {
622 int error;
623 u_int sxfrctl1;
624 uint8_t termctl;
625 uint32_t devconfig;
626
627 devconfig = ahd_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4);
628 devconfig &= ~STPWLEVEL;
629 if ((ahd->flags & AHD_STPWLEVEL_A) != 0)
630 devconfig |= STPWLEVEL;
631 if (bootverbose)
632 printf("%s: STPWLEVEL is %s\n",
633 ahd_name(ahd), (devconfig & STPWLEVEL) ? "on" : "off");
634 ahd_pci_write_config(ahd->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
635
636 /* Make sure current sensing is off. */
637 if ((ahd->flags & AHD_CURRENT_SENSING) != 0) {
638 (void)ahd_write_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, 0);
639 }
640
641 /*
642 * Read to sense. Write to set.
643 */
644 error = ahd_read_flexport(ahd, FLXADDR_TERMCTL, &termctl);
645 if ((adapter_control & CFAUTOTERM) == 0) {
646 if (bootverbose)
647 printf("%s: Manual Primary Termination\n",
648 ahd_name(ahd));
649 termctl &= ~(FLX_TERMCTL_ENPRILOW|FLX_TERMCTL_ENPRIHIGH);
650 if ((adapter_control & CFSTERM) != 0)
651 termctl |= FLX_TERMCTL_ENPRILOW;
652 if ((adapter_control & CFWSTERM) != 0)
653 termctl |= FLX_TERMCTL_ENPRIHIGH;
654 } else if (error != 0) {
655 printf("%s: Primary Auto-Term Sensing failed! "
656 "Using Defaults.\n", ahd_name(ahd));
657 termctl = FLX_TERMCTL_ENPRILOW|FLX_TERMCTL_ENPRIHIGH;
658 }
659
660 if ((adapter_control & CFSEAUTOTERM) == 0) {
661 if (bootverbose)
662 printf("%s: Manual Secondary Termination\n",
663 ahd_name(ahd));
664 termctl &= ~(FLX_TERMCTL_ENSECLOW|FLX_TERMCTL_ENSECHIGH);
665 if ((adapter_control & CFSELOWTERM) != 0)
666 termctl |= FLX_TERMCTL_ENSECLOW;
667 if ((adapter_control & CFSEHIGHTERM) != 0)
668 termctl |= FLX_TERMCTL_ENSECHIGH;
669 } else if (error != 0) {
670 printf("%s: Secondary Auto-Term Sensing failed! "
671 "Using Defaults.\n", ahd_name(ahd));
672 termctl |= FLX_TERMCTL_ENSECLOW|FLX_TERMCTL_ENSECHIGH;
673 }
674
675 /*
676 * Now set the termination based on what we found.
677 */
678 sxfrctl1 = ahd_inb(ahd, SXFRCTL1) & ~STPWEN;
679 if ((termctl & FLX_TERMCTL_ENPRILOW) != 0) {
680 ahd->flags |= AHD_TERM_ENB_A;
681 sxfrctl1 |= STPWEN;
682 }
683 /* Must set the latch once in order to be effective. */
684 ahd_outb(ahd, SXFRCTL1, sxfrctl1|STPWEN);
685 ahd_outb(ahd, SXFRCTL1, sxfrctl1);
686
687 error = ahd_write_flexport(ahd, FLXADDR_TERMCTL, termctl);
688 if (error != 0) {
689 printf("%s: Unable to set termination settings!\n",
690 ahd_name(ahd));
691 } else if (bootverbose) {
692 printf("%s: Primary High byte termination %sabled\n",
693 ahd_name(ahd),
694 (termctl & FLX_TERMCTL_ENPRIHIGH) ? "En" : "Dis");
695
696 printf("%s: Primary Low byte termination %sabled\n",
697 ahd_name(ahd),
698 (termctl & FLX_TERMCTL_ENPRILOW) ? "En" : "Dis");
699
700 printf("%s: Secondary High byte termination %sabled\n",
701 ahd_name(ahd),
702 (termctl & FLX_TERMCTL_ENSECHIGH) ? "En" : "Dis");
703
704 printf("%s: Secondary Low byte termination %sabled\n",
705 ahd_name(ahd),
706 (termctl & FLX_TERMCTL_ENSECLOW) ? "En" : "Dis");
707 }
708 return;
709 }
710
711 #define DPE 0x80
712 #define SSE 0x40
713 #define RMA 0x20
714 #define RTA 0x10
715 #define STA 0x08
716 #define DPR 0x01
717
718 static const char *split_status_source[] =
719 {
720 "DFF0",
721 "DFF1",
722 "OVLY",
723 "CMC",
724 };
725
726 static const char *pci_status_source[] =
727 {
728 "DFF0",
729 "DFF1",
730 "SG",
731 "CMC",
732 "OVLY",
733 "NONE",
734 "MSI",
735 "TARG"
736 };
737
738 static const char *split_status_strings[] =
739 {
740 "%s: Received split response in %s.\n",
741 "%s: Received split completion error message in %s\n",
742 "%s: Receive overrun in %s\n",
743 "%s: Count not complete in %s\n",
744 "%s: Split completion data bucket in %s\n",
745 "%s: Split completion address error in %s\n",
746 "%s: Split completion byte count error in %s\n",
747 "%s: Signaled Target-abort to early terminate a split in %s\n"
748 };
749
750 static const char *pci_status_strings[] =
751 {
752 "%s: Data Parity Error has been reported via PERR# in %s\n",
753 "%s: Target initial wait state error in %s\n",
754 "%s: Split completion read data parity error in %s\n",
755 "%s: Split completion address attribute parity error in %s\n",
756 "%s: Received a Target Abort in %s\n",
757 "%s: Received a Master Abort in %s\n",
758 "%s: Signal System Error Detected in %s\n",
759 "%s: Address or Write Phase Parity Error Detected in %s.\n"
760 };
761
762 void
763 ahd_pci_intr(struct ahd_softc *ahd)
764 {
765 uint8_t pci_status[8];
766 ahd_mode_state saved_modes;
767 u_int pci_status1;
768 u_int intstat;
769 u_int i;
770 u_int reg;
771
772 intstat = ahd_inb(ahd, INTSTAT);
773
774 if ((intstat & SPLTINT) != 0)
775 ahd_pci_split_intr(ahd, intstat);
776
777 if ((intstat & PCIINT) == 0)
778 return;
779
780 printf("%s: PCI error Interrupt\n", ahd_name(ahd));
781 saved_modes = ahd_save_modes(ahd);
782 ahd_dump_card_state(ahd);
783 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
784 for (i = 0, reg = DF0PCISTAT; i < 8; i++, reg++) {
785
786 if (i == 5)
787 continue;
788 pci_status[i] = ahd_inb(ahd, reg);
789 /* Clear latched errors. So our interrupt deasserts. */
790 ahd_outb(ahd, reg, pci_status[i]);
791 }
792
793 for (i = 0; i < 8; i++) {
794 u_int bit;
795
796 if (i == 5)
797 continue;
798
799 for (bit = 0; bit < 8; bit++) {
800
801 if ((pci_status[i] & (0x1 << bit)) != 0) {
802 static const char *s;
803
804 s = pci_status_strings[bit];
805 if (i == 7/*TARG*/ && bit == 3)
806 s = "%s: Signaled Target Abort\n";
807 printf(s, ahd_name(ahd), pci_status_source[i]);
808 }
809 }
810 }
811 pci_status1 = ahd_pci_read_config(ahd->dev_softc,
812 PCIR_STATUS + 1, /*bytes*/1);
813 ahd_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
814 pci_status1, /*bytes*/1);
815 ahd_restore_modes(ahd, saved_modes);
816 ahd_outb(ahd, CLRINT, CLRPCIINT);
817 ahd_unpause(ahd);
818 }
819
820 static void
821 ahd_pci_split_intr(struct ahd_softc *ahd, u_int intstat)
822 {
823 uint8_t split_status[4];
824 uint8_t split_status1[4];
825 uint8_t sg_split_status[2];
826 uint8_t sg_split_status1[2];
827 ahd_mode_state saved_modes;
828 u_int i;
829 uint16_t pcix_status;
830
831 /*
832 * Check for splits in all modes. Modes 0 and 1
833 * additionally have SG engine splits to look at.
834 */
835 pcix_status = ahd_pci_read_config(ahd->dev_softc, PCIXR_STATUS,
836 /*bytes*/2);
837 printf("%s: PCI Split Interrupt - PCI-X status = 0x%x\n",
838 ahd_name(ahd), pcix_status);
839 saved_modes = ahd_save_modes(ahd);
840 for (i = 0; i < 4; i++) {
841 ahd_set_modes(ahd, i, i);
842
843 split_status[i] = ahd_inb(ahd, DCHSPLTSTAT0);
844 split_status1[i] = ahd_inb(ahd, DCHSPLTSTAT1);
845 /* Clear latched errors. So our interrupt deasserts. */
846 ahd_outb(ahd, DCHSPLTSTAT0, split_status[i]);
847 ahd_outb(ahd, DCHSPLTSTAT1, split_status1[i]);
848 if (i > 1)
849 continue;
850 sg_split_status[i] = ahd_inb(ahd, SGSPLTSTAT0);
851 sg_split_status1[i] = ahd_inb(ahd, SGSPLTSTAT1);
852 /* Clear latched errors. So our interrupt deasserts. */
853 ahd_outb(ahd, SGSPLTSTAT0, sg_split_status[i]);
854 ahd_outb(ahd, SGSPLTSTAT1, sg_split_status1[i]);
855 }
856
857 for (i = 0; i < 4; i++) {
858 u_int bit;
859
860 for (bit = 0; bit < 8; bit++) {
861
862 if ((split_status[i] & (0x1 << bit)) != 0) {
863 static const char *s;
864
865 s = split_status_strings[bit];
866 printf(s, ahd_name(ahd),
867 split_status_source[i]);
868 }
869
870 if (i > 1)
871 continue;
872
873 if ((sg_split_status[i] & (0x1 << bit)) != 0) {
874 static const char *s;
875
876 s = split_status_strings[bit];
877 printf(s, ahd_name(ahd), "SG");
878 }
879 }
880 }
881 /*
882 * Clear PCI-X status bits.
883 */
884 ahd_pci_write_config(ahd->dev_softc, PCIXR_STATUS,
885 pcix_status, /*bytes*/2);
886 ahd_outb(ahd, CLRINT, CLRSPLTINT);
887 ahd_restore_modes(ahd, saved_modes);
888 }
889
890 static int
891 ahd_aic7901_setup(struct ahd_softc *ahd)
892 {
893
894 ahd->chip = AHD_AIC7901;
895 ahd->features = AHD_AIC7901_FE;
896 return (ahd_aic790X_setup(ahd));
897 }
898
899 static int
900 ahd_aic7901A_setup(struct ahd_softc *ahd)
901 {
902
903 ahd->chip = AHD_AIC7901A;
904 ahd->features = AHD_AIC7901A_FE;
905 return (ahd_aic790X_setup(ahd));
906 }
907
908 static int
909 ahd_aic7902_setup(struct ahd_softc *ahd)
910 {
911 ahd->chip = AHD_AIC7902;
912 ahd->features = AHD_AIC7902_FE;
913 return (ahd_aic790X_setup(ahd));
914 }
915
916 static int
917 ahd_aic790X_setup(struct ahd_softc *ahd)
918 {
919 ahd_dev_softc_t pci;
920 u_int rev;
921
922 pci = ahd->dev_softc;
923 rev = ahd_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
924 if (rev < ID_AIC7902_PCI_REV_A4) {
925 printf("%s: Unable to attach to unsupported chip revision %d\n",
926 ahd_name(ahd), rev);
927 ahd_pci_write_config(pci, PCIR_COMMAND, 0, /*bytes*/2);
928 return (ENXIO);
929 }
930 ahd->channel = ahd_get_pci_function(pci) + 'A';
931 if (rev < ID_AIC7902_PCI_REV_B0) {
932 /*
933 * Enable A series workarounds.
934 */
935 ahd->bugs |= AHD_SENT_SCB_UPDATE_BUG|AHD_ABORT_LQI_BUG
936 | AHD_PKT_BITBUCKET_BUG|AHD_LONG_SETIMO_BUG
937 | AHD_NLQICRC_DELAYED_BUG|AHD_SCSIRST_BUG
938 | AHD_LQO_ATNO_BUG|AHD_AUTOFLUSH_BUG
939 | AHD_CLRLQO_AUTOCLR_BUG|AHD_PCIX_MMAPIO_BUG
940 | AHD_PCIX_CHIPRST_BUG|AHD_PCIX_SCBRAM_RD_BUG
941 | AHD_PKTIZED_STATUS_BUG|AHD_PKT_LUN_BUG
942 | AHD_MDFF_WSCBPTR_BUG|AHD_REG_SLOW_SETTLE_BUG
943 | AHD_SET_MODE_BUG|AHD_BUSFREEREV_BUG
944 | AHD_NONPACKFIFO_BUG|AHD_PACED_NEGTABLE_BUG
945 | AHD_FAINT_LED_BUG;
946
947 /*
948 * IO Cell paramter setup.
949 */
950 AHD_SET_PRECOMP(ahd, AHD_PRECOMP_CUTBACK_29);
951
952 if ((ahd->flags & AHD_HP_BOARD) == 0)
953 AHD_SET_SLEWRATE(ahd, AHD_SLEWRATE_DEF_REVA);
954 } else {
955 u_int devconfig1;
956
957 ahd->features |= AHD_RTI|AHD_NEW_IOCELL_OPTS
958 | AHD_NEW_DFCNTRL_OPTS|AHD_FAST_CDB_DELIVERY;
959 ahd->bugs |= AHD_LQOOVERRUN_BUG|AHD_EARLY_REQ_BUG;
960
961 /*
962 * Some issues have been resolved in the 7901B.
963 */
964 if ((ahd->features & AHD_MULTI_FUNC) != 0)
965 ahd->bugs |= AHD_INTCOLLISION_BUG|AHD_ABORT_LQI_BUG;
966
967 /*
968 * IO Cell paramter setup.
969 */
970 AHD_SET_PRECOMP(ahd, AHD_PRECOMP_CUTBACK_29);
971 AHD_SET_SLEWRATE(ahd, AHD_SLEWRATE_DEF_REVB);
972 AHD_SET_AMPLITUDE(ahd, AHD_AMPLITUDE_DEF);
973
974 /*
975 * Set the PREQDIS bit for H2B which disables some workaround
976 * that doesn't work on regular PCI busses.
977 * XXX - Find out exactly what this does from the hardware
978 * folks!
979 */
980 devconfig1 = ahd_pci_read_config(pci, DEVCONFIG1, /*bytes*/1);
981 ahd_pci_write_config(pci, DEVCONFIG1,
982 devconfig1|PREQDIS, /*bytes*/1);
983 devconfig1 = ahd_pci_read_config(pci, DEVCONFIG1, /*bytes*/1);
984 }
985
986 return (0);
987 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree