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bridge: fix a possible use after free
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / aic7xxx / aic79xx_pci.c
blob14b5f8d0e7f4748bbac375da3c9174956740dd60
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#92 $
42 */
43
44 #ifdef __linux__
45 #include "aic79xx_osm.h"
46 #include "aic79xx_inline.h"
47 #else
48 #include <dev/aic7xxx/aic79xx_osm.h>
49 #include <dev/aic7xxx/aic79xx_inline.h>
50 #endif
51
52 #include "aic79xx_pci.h"
53
54 static inline uint64_t
55 ahd_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
56 {
57 uint64_t id;
58
59 id = subvendor
60 | (subdevice << 16)
61 | ((uint64_t)vendor << 32)
62 | ((uint64_t)device << 48);
63
64 return (id);
65 }
66
67 #define ID_AIC7902_PCI_REV_A4 0x3
68 #define ID_AIC7902_PCI_REV_B0 0x10
69 #define SUBID_HP 0x0E11
70
71 #define DEVID_9005_HOSTRAID(id) ((id) & 0x80)
72
73 #define DEVID_9005_TYPE(id) ((id) & 0xF)
74 #define DEVID_9005_TYPE_HBA 0x0 /* Standard Card */
75 #define DEVID_9005_TYPE_HBA_2EXT 0x1 /* 2 External Ports */
76 #define DEVID_9005_TYPE_IROC 0x8 /* Raid(0,1,10) Card */
77 #define DEVID_9005_TYPE_MB 0xF /* On Motherboard */
78
79 #define DEVID_9005_MFUNC(id) ((id) & 0x10)
80
81 #define DEVID_9005_PACKETIZED(id) ((id) & 0x8000)
82
83 #define SUBID_9005_TYPE(id) ((id) & 0xF)
84 #define SUBID_9005_TYPE_HBA 0x0 /* Standard Card */
85 #define SUBID_9005_TYPE_MB 0xF /* On Motherboard */
86
87 #define SUBID_9005_AUTOTERM(id) (((id) & 0x10) == 0)
88
89 #define SUBID_9005_LEGACYCONN_FUNC(id) ((id) & 0x20)
90
91 #define SUBID_9005_SEEPTYPE(id) (((id) & 0x0C0) >> 6)
92 #define SUBID_9005_SEEPTYPE_NONE 0x0
93 #define SUBID_9005_SEEPTYPE_4K 0x1
94
95 static ahd_device_setup_t ahd_aic7901_setup;
96 static ahd_device_setup_t ahd_aic7901A_setup;
97 static ahd_device_setup_t ahd_aic7902_setup;
98 static ahd_device_setup_t ahd_aic790X_setup;
99
100 static const struct ahd_pci_identity ahd_pci_ident_table[] =
101 {
102 /* aic7901 based controllers */
103 {
104 ID_AHA_29320A,
105 ID_ALL_MASK,
106 "Adaptec 29320A Ultra320 SCSI adapter",
107 ahd_aic7901_setup
108 },
109 {
110 ID_AHA_29320ALP,
111 ID_ALL_MASK,
112 "Adaptec 29320ALP PCIx Ultra320 SCSI adapter",
113 ahd_aic7901_setup
114 },
115 {
116 ID_AHA_29320LPE,
117 ID_ALL_MASK,
118 "Adaptec 29320LPE PCIe Ultra320 SCSI adapter",
119 ahd_aic7901_setup
120 },
121 /* aic7901A based controllers */
122 {
123 ID_AHA_29320LP,
124 ID_ALL_MASK,
125 "Adaptec 29320LP Ultra320 SCSI adapter",
126 ahd_aic7901A_setup
127 },
128 /* aic7902 based controllers */
129 {
130 ID_AHA_29320,
131 ID_ALL_MASK,
132 "Adaptec 29320 Ultra320 SCSI adapter",
133 ahd_aic7902_setup
134 },
135 {
136 ID_AHA_29320B,
137 ID_ALL_MASK,
138 "Adaptec 29320B Ultra320 SCSI adapter",
139 ahd_aic7902_setup
140 },
141 {
142 ID_AHA_39320,
143 ID_ALL_MASK,
144 "Adaptec 39320 Ultra320 SCSI adapter",
145 ahd_aic7902_setup
146 },
147 {
148 ID_AHA_39320_B,
149 ID_ALL_MASK,
150 "Adaptec 39320 Ultra320 SCSI adapter",
151 ahd_aic7902_setup
152 },
153 {
154 ID_AHA_39320_B_DELL,
155 ID_ALL_MASK,
156 "Adaptec (Dell OEM) 39320 Ultra320 SCSI adapter",
157 ahd_aic7902_setup
158 },
159 {
160 ID_AHA_39320A,
161 ID_ALL_MASK,
162 "Adaptec 39320A Ultra320 SCSI adapter",
163 ahd_aic7902_setup
164 },
165 {
166 ID_AHA_39320D,
167 ID_ALL_MASK,
168 "Adaptec 39320D Ultra320 SCSI adapter",
169 ahd_aic7902_setup
170 },
171 {
172 ID_AHA_39320D_HP,
173 ID_ALL_MASK,
174 "Adaptec (HP OEM) 39320D Ultra320 SCSI adapter",
175 ahd_aic7902_setup
176 },
177 {
178 ID_AHA_39320D_B,
179 ID_ALL_MASK,
180 "Adaptec 39320D Ultra320 SCSI adapter",
181 ahd_aic7902_setup
182 },
183 {
184 ID_AHA_39320D_B_HP,
185 ID_ALL_MASK,
186 "Adaptec (HP OEM) 39320D Ultra320 SCSI adapter",
187 ahd_aic7902_setup
188 },
189 /* Generic chip probes for devices we don't know 'exactly' */
190 {
191 ID_AIC7901 & ID_9005_GENERIC_MASK,
192 ID_9005_GENERIC_MASK,
193 "Adaptec AIC7901 Ultra320 SCSI adapter",
194 ahd_aic7901_setup
195 },
196 {
197 ID_AIC7901A & ID_DEV_VENDOR_MASK,
198 ID_DEV_VENDOR_MASK,
199 "Adaptec AIC7901A Ultra320 SCSI adapter",
200 ahd_aic7901A_setup
201 },
202 {
203 ID_AIC7902 & ID_9005_GENERIC_MASK,
204 ID_9005_GENERIC_MASK,
205 "Adaptec AIC7902 Ultra320 SCSI adapter",
206 ahd_aic7902_setup
207 }
208 };
209
210 static const u_int ahd_num_pci_devs = ARRAY_SIZE(ahd_pci_ident_table);
211
212 #define DEVCONFIG 0x40
213 #define PCIXINITPAT 0x0000E000ul
214 #define PCIXINIT_PCI33_66 0x0000E000ul
215 #define PCIXINIT_PCIX50_66 0x0000C000ul
216 #define PCIXINIT_PCIX66_100 0x0000A000ul
217 #define PCIXINIT_PCIX100_133 0x00008000ul
218 #define PCI_BUS_MODES_INDEX(devconfig) \
219 (((devconfig) & PCIXINITPAT) >> 13)
220 static const char *pci_bus_modes[] =
221 {
222 "PCI bus mode unknown",
223 "PCI bus mode unknown",
224 "PCI bus mode unknown",
225 "PCI bus mode unknown",
226 "PCI-X 101-133MHz",
227 "PCI-X 67-100MHz",
228 "PCI-X 50-66MHz",
229 "PCI 33 or 66MHz"
230 };
231
232 #define TESTMODE 0x00000800ul
233 #define IRDY_RST 0x00000200ul
234 #define FRAME_RST 0x00000100ul
235 #define PCI64BIT 0x00000080ul
236 #define MRDCEN 0x00000040ul
237 #define ENDIANSEL 0x00000020ul
238 #define MIXQWENDIANEN 0x00000008ul
239 #define DACEN 0x00000004ul
240 #define STPWLEVEL 0x00000002ul
241 #define QWENDIANSEL 0x00000001ul
242
243 #define DEVCONFIG1 0x44
244 #define PREQDIS 0x01
245
246 #define CSIZE_LATTIME 0x0c
247 #define CACHESIZE 0x000000fful
248 #define LATTIME 0x0000ff00ul
249
250 static int ahd_check_extport(struct ahd_softc *ahd);
251 static void ahd_configure_termination(struct ahd_softc *ahd,
252 u_int adapter_control);
253 static void ahd_pci_split_intr(struct ahd_softc *ahd, u_int intstat);
254 static void ahd_pci_intr(struct ahd_softc *ahd);
255
256 const struct ahd_pci_identity *
257 ahd_find_pci_device(ahd_dev_softc_t pci)
258 {
259 uint64_t full_id;
260 uint16_t device;
261 uint16_t vendor;
262 uint16_t subdevice;
263 uint16_t subvendor;
264 const struct ahd_pci_identity *entry;
265 u_int i;
266
267 vendor = ahd_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
268 device = ahd_pci_read_config(pci, PCIR_DEVICE, /*bytes*/2);
269 subvendor = ahd_pci_read_config(pci, PCIR_SUBVEND_0, /*bytes*/2);
270 subdevice = ahd_pci_read_config(pci, PCIR_SUBDEV_0, /*bytes*/2);
271 full_id = ahd_compose_id(device,
272 vendor,
273 subdevice,
274 subvendor);
275
276 /*
277 * Controllers, mask out the IROC/HostRAID bit
278 */
279
280 full_id &= ID_ALL_IROC_MASK;
281
282 for (i = 0; i < ahd_num_pci_devs; i++) {
283 entry = &ahd_pci_ident_table[i];
284 if (entry->full_id == (full_id & entry->id_mask)) {
285 /* Honor exclusion entries. */
286 if (entry->name == NULL)
287 return (NULL);
288 return (entry);
289 }
290 }
291 return (NULL);
292 }
293
294 int
295 ahd_pci_config(struct ahd_softc *ahd, const struct ahd_pci_identity *entry)
296 {
297 struct scb_data *shared_scb_data;
298 u_int command;
299 uint32_t devconfig;
300 uint16_t subvendor;
301 int error;
302
303 shared_scb_data = NULL;
304 ahd->description = entry->name;
305 /*
306 * Record if this is an HP board.
307 */
308 subvendor = ahd_pci_read_config(ahd->dev_softc,
309 PCIR_SUBVEND_0, /*bytes*/2);
310 if (subvendor == SUBID_HP)
311 ahd->flags |= AHD_HP_BOARD;
312
313 error = entry->setup(ahd);
314 if (error != 0)
315 return (error);
316
317 devconfig = ahd_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4);
318 if ((devconfig & PCIXINITPAT) == PCIXINIT_PCI33_66) {
319 ahd->chip |= AHD_PCI;
320 /* Disable PCIX workarounds when running in PCI mode. */
321 ahd->bugs &= ~AHD_PCIX_BUG_MASK;
322 } else {
323 ahd->chip |= AHD_PCIX;
324 }
325 ahd->bus_description = pci_bus_modes[PCI_BUS_MODES_INDEX(devconfig)];
326
327 ahd_power_state_change(ahd, AHD_POWER_STATE_D0);
328
329 error = ahd_pci_map_registers(ahd);
330 if (error != 0)
331 return (error);
332
333 /*
334 * If we need to support high memory, enable dual
335 * address cycles. This bit must be set to enable
336 * high address bit generation even if we are on a
337 * 64bit bus (PCI64BIT set in devconfig).
338 */
339 if ((ahd->flags & (AHD_39BIT_ADDRESSING|AHD_64BIT_ADDRESSING)) != 0) {
340 if (bootverbose)
341 printk("%s: Enabling 39Bit Addressing\n",
342 ahd_name(ahd));
343 devconfig = ahd_pci_read_config(ahd->dev_softc,
344 DEVCONFIG, /*bytes*/4);
345 devconfig |= DACEN;
346 ahd_pci_write_config(ahd->dev_softc, DEVCONFIG,
347 devconfig, /*bytes*/4);
348 }
349
350 /* Ensure busmastering is enabled */
351 command = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/2);
352 command |= PCIM_CMD_BUSMASTEREN;
353 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, command, /*bytes*/2);
354
355 error = ahd_softc_init(ahd);
356 if (error != 0)
357 return (error);
358
359 ahd->bus_intr = ahd_pci_intr;
360
361 error = ahd_reset(ahd, /*reinit*/FALSE);
362 if (error != 0)
363 return (ENXIO);
364
365 ahd->pci_cachesize =
366 ahd_pci_read_config(ahd->dev_softc, CSIZE_LATTIME,
367 /*bytes*/1) & CACHESIZE;
368 ahd->pci_cachesize *= 4;
369
370 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
371 /* See if we have a SEEPROM and perform auto-term */
372 error = ahd_check_extport(ahd);
373 if (error != 0)
374 return (error);
375
376 /* Core initialization */
377 error = ahd_init(ahd);
378 if (error != 0)
379 return (error);
380 ahd->init_level++;
381
382 /*
383 * Allow interrupts now that we are completely setup.
384 */
385 return ahd_pci_map_int(ahd);
386 }
387
388 #ifdef CONFIG_PM
389 void
390 ahd_pci_suspend(struct ahd_softc *ahd)
391 {
392 /*
393 * Save chip register configuration data for chip resets
394 * that occur during runtime and resume events.
395 */
396 ahd->suspend_state.pci_state.devconfig =
397 ahd_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4);
398 ahd->suspend_state.pci_state.command =
399 ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/1);
400 ahd->suspend_state.pci_state.csize_lattime =
401 ahd_pci_read_config(ahd->dev_softc, CSIZE_LATTIME, /*bytes*/1);
402
403 }
404
405 void
406 ahd_pci_resume(struct ahd_softc *ahd)
407 {
408 ahd_pci_write_config(ahd->dev_softc, DEVCONFIG,
409 ahd->suspend_state.pci_state.devconfig, /*bytes*/4);
410 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
411 ahd->suspend_state.pci_state.command, /*bytes*/1);
412 ahd_pci_write_config(ahd->dev_softc, CSIZE_LATTIME,
413 ahd->suspend_state.pci_state.csize_lattime, /*bytes*/1);
414 }
415 #endif
416
417 /*
418 * Perform some simple tests that should catch situations where
419 * our registers are invalidly mapped.
420 */
421 int
422 ahd_pci_test_register_access(struct ahd_softc *ahd)
423 {
424 uint32_t cmd;
425 u_int targpcistat;
426 u_int pci_status1;
427 int error;
428 uint8_t hcntrl;
429
430 error = EIO;
431
432 /*
433 * Enable PCI error interrupt status, but suppress NMIs
434 * generated by SERR raised due to target aborts.
435 */
436 cmd = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/2);
437 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
438 cmd & ~PCIM_CMD_SERRESPEN, /*bytes*/2);
439
440 /*
441 * First a simple test to see if any
442 * registers can be read. Reading
443 * HCNTRL has no side effects and has
444 * at least one bit that is guaranteed to
445 * be zero so it is a good register to
446 * use for this test.
447 */
448 hcntrl = ahd_inb(ahd, HCNTRL);
449 if (hcntrl == 0xFF)
450 goto fail;
451
452 /*
453 * Next create a situation where write combining
454 * or read prefetching could be initiated by the
455 * CPU or host bridge. Our device does not support
456 * either, so look for data corruption and/or flaged
457 * PCI errors. First pause without causing another
458 * chip reset.
459 */
460 hcntrl &= ~CHIPRST;
461 ahd_outb(ahd, HCNTRL, hcntrl|PAUSE);
462 while (ahd_is_paused(ahd) == 0)
463 ;
464
465 /* Clear any PCI errors that occurred before our driver attached. */
466 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
467 targpcistat = ahd_inb(ahd, TARGPCISTAT);
468 ahd_outb(ahd, TARGPCISTAT, targpcistat);
469 pci_status1 = ahd_pci_read_config(ahd->dev_softc,
470 PCIR_STATUS + 1, /*bytes*/1);
471 ahd_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
472 pci_status1, /*bytes*/1);
473 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
474 ahd_outb(ahd, CLRINT, CLRPCIINT);
475
476 ahd_outb(ahd, SEQCTL0, PERRORDIS);
477 ahd_outl(ahd, SRAM_BASE, 0x5aa555aa);
478 if (ahd_inl(ahd, SRAM_BASE) != 0x5aa555aa)
479 goto fail;
480
481 if ((ahd_inb(ahd, INTSTAT) & PCIINT) != 0) {
482 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
483 targpcistat = ahd_inb(ahd, TARGPCISTAT);
484 if ((targpcistat & STA) != 0)
485 goto fail;
486 }
487
488 error = 0;
489
490 fail:
491 if ((ahd_inb(ahd, INTSTAT) & PCIINT) != 0) {
492
493 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
494 targpcistat = ahd_inb(ahd, TARGPCISTAT);
495
496 /* Silently clear any latched errors. */
497 ahd_outb(ahd, TARGPCISTAT, targpcistat);
498 pci_status1 = ahd_pci_read_config(ahd->dev_softc,
499 PCIR_STATUS + 1, /*bytes*/1);
500 ahd_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
501 pci_status1, /*bytes*/1);
502 ahd_outb(ahd, CLRINT, CLRPCIINT);
503 }
504 ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS);
505 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, cmd, /*bytes*/2);
506 return (error);
507 }
508
509 /*
510 * Check the external port logic for a serial eeprom
511 * and termination/cable detection contrls.
512 */
513 static int
514 ahd_check_extport(struct ahd_softc *ahd)
515 {
516 struct vpd_config vpd;
517 struct seeprom_config *sc;
518 u_int adapter_control;
519 int have_seeprom;
520 int error;
521
522 sc = ahd->seep_config;
523 have_seeprom = ahd_acquire_seeprom(ahd);
524 if (have_seeprom) {
525 u_int start_addr;
526
527 /*
528 * Fetch VPD for this function and parse it.
529 */
530 if (bootverbose)
531 printk("%s: Reading VPD from SEEPROM...",
532 ahd_name(ahd));
533
534 /* Address is always in units of 16bit words */
535 start_addr = ((2 * sizeof(*sc))
536 + (sizeof(vpd) * (ahd->channel - 'A'))) / 2;
537
538 error = ahd_read_seeprom(ahd, (uint16_t *)&vpd,
539 start_addr, sizeof(vpd)/2,
540 /*bytestream*/TRUE);
541 if (error == 0)
542 error = ahd_parse_vpddata(ahd, &vpd);
543 if (bootverbose)
544 printk("%s: VPD parsing %s\n",
545 ahd_name(ahd),
546 error == 0 ? "successful" : "failed");
547
548 if (bootverbose)
549 printk("%s: Reading SEEPROM...", ahd_name(ahd));
550
551 /* Address is always in units of 16bit words */
552 start_addr = (sizeof(*sc) / 2) * (ahd->channel - 'A');
553
554 error = ahd_read_seeprom(ahd, (uint16_t *)sc,
555 start_addr, sizeof(*sc)/2,
556 /*bytestream*/FALSE);
557
558 if (error != 0) {
559 printk("Unable to read SEEPROM\n");
560 have_seeprom = 0;
561 } else {
562 have_seeprom = ahd_verify_cksum(sc);
563
564 if (bootverbose) {
565 if (have_seeprom == 0)
566 printk ("checksum error\n");
567 else
568 printk ("done.\n");
569 }
570 }
571 ahd_release_seeprom(ahd);
572 }
573
574 if (!have_seeprom) {
575 u_int nvram_scb;
576
577 /*
578 * Pull scratch ram settings and treat them as
579 * if they are the contents of an seeprom if
580 * the 'ADPT', 'BIOS', or 'ASPI' signature is found
581 * in SCB 0xFF. We manually compose the data as 16bit
582 * values to avoid endian issues.
583 */
584 ahd_set_scbptr(ahd, 0xFF);
585 nvram_scb = ahd_inb_scbram(ahd, SCB_BASE + NVRAM_SCB_OFFSET);
586 if (nvram_scb != 0xFF
587 && ((ahd_inb_scbram(ahd, SCB_BASE + 0) == 'A'
588 && ahd_inb_scbram(ahd, SCB_BASE + 1) == 'D'
589 && ahd_inb_scbram(ahd, SCB_BASE + 2) == 'P'
590 && ahd_inb_scbram(ahd, SCB_BASE + 3) == 'T')
591 || (ahd_inb_scbram(ahd, SCB_BASE + 0) == 'B'
592 && ahd_inb_scbram(ahd, SCB_BASE + 1) == 'I'
593 && ahd_inb_scbram(ahd, SCB_BASE + 2) == 'O'
594 && ahd_inb_scbram(ahd, SCB_BASE + 3) == 'S')
595 || (ahd_inb_scbram(ahd, SCB_BASE + 0) == 'A'
596 && ahd_inb_scbram(ahd, SCB_BASE + 1) == 'S'
597 && ahd_inb_scbram(ahd, SCB_BASE + 2) == 'P'
598 && ahd_inb_scbram(ahd, SCB_BASE + 3) == 'I'))) {
599 uint16_t *sc_data;
600 int i;
601
602 ahd_set_scbptr(ahd, nvram_scb);
603 sc_data = (uint16_t *)sc;
604 for (i = 0; i < 64; i += 2)
605 *sc_data++ = ahd_inw_scbram(ahd, SCB_BASE+i);
606 have_seeprom = ahd_verify_cksum(sc);
607 if (have_seeprom)
608 ahd->flags |= AHD_SCB_CONFIG_USED;
609 }
610 }
611
612 #ifdef AHD_DEBUG
613 if (have_seeprom != 0
614 && (ahd_debug & AHD_DUMP_SEEPROM) != 0) {
615 uint16_t *sc_data;
616 int i;
617
618 printk("%s: Seeprom Contents:", ahd_name(ahd));
619 sc_data = (uint16_t *)sc;
620 for (i = 0; i < (sizeof(*sc)); i += 2)
621 printk("\n\t0x%.4x", sc_data[i]);
622 printk("\n");
623 }
624 #endif
625
626 if (!have_seeprom) {
627 if (bootverbose)
628 printk("%s: No SEEPROM available.\n", ahd_name(ahd));
629 ahd->flags |= AHD_USEDEFAULTS;
630 error = ahd_default_config(ahd);
631 adapter_control = CFAUTOTERM|CFSEAUTOTERM;
632 kfree(ahd->seep_config);
633 ahd->seep_config = NULL;
634 } else {
635 error = ahd_parse_cfgdata(ahd, sc);
636 adapter_control = sc->adapter_control;
637 }
638 if (error != 0)
639 return (error);
640
641 ahd_configure_termination(ahd, adapter_control);
642
643 return (0);
644 }
645
646 static void
647 ahd_configure_termination(struct ahd_softc *ahd, u_int adapter_control)
648 {
649 int error;
650 u_int sxfrctl1;
651 uint8_t termctl;
652 uint32_t devconfig;
653
654 devconfig = ahd_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4);
655 devconfig &= ~STPWLEVEL;
656 if ((ahd->flags & AHD_STPWLEVEL_A) != 0)
657 devconfig |= STPWLEVEL;
658 if (bootverbose)
659 printk("%s: STPWLEVEL is %s\n",
660 ahd_name(ahd), (devconfig & STPWLEVEL) ? "on" : "off");
661 ahd_pci_write_config(ahd->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
662
663 /* Make sure current sensing is off. */
664 if ((ahd->flags & AHD_CURRENT_SENSING) != 0) {
665 (void)ahd_write_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, 0);
666 }
667
668 /*
669 * Read to sense. Write to set.
670 */
671 error = ahd_read_flexport(ahd, FLXADDR_TERMCTL, &termctl);
672 if ((adapter_control & CFAUTOTERM) == 0) {
673 if (bootverbose)
674 printk("%s: Manual Primary Termination\n",
675 ahd_name(ahd));
676 termctl &= ~(FLX_TERMCTL_ENPRILOW|FLX_TERMCTL_ENPRIHIGH);
677 if ((adapter_control & CFSTERM) != 0)
678 termctl |= FLX_TERMCTL_ENPRILOW;
679 if ((adapter_control & CFWSTERM) != 0)
680 termctl |= FLX_TERMCTL_ENPRIHIGH;
681 } else if (error != 0) {
682 printk("%s: Primary Auto-Term Sensing failed! "
683 "Using Defaults.\n", ahd_name(ahd));
684 termctl = FLX_TERMCTL_ENPRILOW|FLX_TERMCTL_ENPRIHIGH;
685 }
686
687 if ((adapter_control & CFSEAUTOTERM) == 0) {
688 if (bootverbose)
689 printk("%s: Manual Secondary Termination\n",
690 ahd_name(ahd));
691 termctl &= ~(FLX_TERMCTL_ENSECLOW|FLX_TERMCTL_ENSECHIGH);
692 if ((adapter_control & CFSELOWTERM) != 0)
693 termctl |= FLX_TERMCTL_ENSECLOW;
694 if ((adapter_control & CFSEHIGHTERM) != 0)
695 termctl |= FLX_TERMCTL_ENSECHIGH;
696 } else if (error != 0) {
697 printk("%s: Secondary Auto-Term Sensing failed! "
698 "Using Defaults.\n", ahd_name(ahd));
699 termctl |= FLX_TERMCTL_ENSECLOW|FLX_TERMCTL_ENSECHIGH;
700 }
701
702 /*
703 * Now set the termination based on what we found.
704 */
705 sxfrctl1 = ahd_inb(ahd, SXFRCTL1) & ~STPWEN;
706 ahd->flags &= ~AHD_TERM_ENB_A;
707 if ((termctl & FLX_TERMCTL_ENPRILOW) != 0) {
708 ahd->flags |= AHD_TERM_ENB_A;
709 sxfrctl1 |= STPWEN;
710 }
711 /* Must set the latch once in order to be effective. */
712 ahd_outb(ahd, SXFRCTL1, sxfrctl1|STPWEN);
713 ahd_outb(ahd, SXFRCTL1, sxfrctl1);
714
715 error = ahd_write_flexport(ahd, FLXADDR_TERMCTL, termctl);
716 if (error != 0) {
717 printk("%s: Unable to set termination settings!\n",
718 ahd_name(ahd));
719 } else if (bootverbose) {
720 printk("%s: Primary High byte termination %sabled\n",
721 ahd_name(ahd),
722 (termctl & FLX_TERMCTL_ENPRIHIGH) ? "En" : "Dis");
723
724 printk("%s: Primary Low byte termination %sabled\n",
725 ahd_name(ahd),
726 (termctl & FLX_TERMCTL_ENPRILOW) ? "En" : "Dis");
727
728 printk("%s: Secondary High byte termination %sabled\n",
729 ahd_name(ahd),
730 (termctl & FLX_TERMCTL_ENSECHIGH) ? "En" : "Dis");
731
732 printk("%s: Secondary Low byte termination %sabled\n",
733 ahd_name(ahd),
734 (termctl & FLX_TERMCTL_ENSECLOW) ? "En" : "Dis");
735 }
736 return;
737 }
738
739 #define DPE 0x80
740 #define SSE 0x40
741 #define RMA 0x20
742 #define RTA 0x10
743 #define STA 0x08
744 #define DPR 0x01
745
746 static const char *split_status_source[] =
747 {
748 "DFF0",
749 "DFF1",
750 "OVLY",
751 "CMC",
752 };
753
754 static const char *pci_status_source[] =
755 {
756 "DFF0",
757 "DFF1",
758 "SG",
759 "CMC",
760 "OVLY",
761 "NONE",
762 "MSI",
763 "TARG"
764 };
765
766 static const char *split_status_strings[] =
767 {
768 "%s: Received split response in %s.\n",
769 "%s: Received split completion error message in %s\n",
770 "%s: Receive overrun in %s\n",
771 "%s: Count not complete in %s\n",
772 "%s: Split completion data bucket in %s\n",
773 "%s: Split completion address error in %s\n",
774 "%s: Split completion byte count error in %s\n",
775 "%s: Signaled Target-abort to early terminate a split in %s\n"
776 };
777
778 static const char *pci_status_strings[] =
779 {
780 "%s: Data Parity Error has been reported via PERR# in %s\n",
781 "%s: Target initial wait state error in %s\n",
782 "%s: Split completion read data parity error in %s\n",
783 "%s: Split completion address attribute parity error in %s\n",
784 "%s: Received a Target Abort in %s\n",
785 "%s: Received a Master Abort in %s\n",
786 "%s: Signal System Error Detected in %s\n",
787 "%s: Address or Write Phase Parity Error Detected in %s.\n"
788 };
789
790 static void
791 ahd_pci_intr(struct ahd_softc *ahd)
792 {
793 uint8_t pci_status[8];
794 ahd_mode_state saved_modes;
795 u_int pci_status1;
796 u_int intstat;
797 u_int i;
798 u_int reg;
799
800 intstat = ahd_inb(ahd, INTSTAT);
801
802 if ((intstat & SPLTINT) != 0)
803 ahd_pci_split_intr(ahd, intstat);
804
805 if ((intstat & PCIINT) == 0)
806 return;
807
808 printk("%s: PCI error Interrupt\n", ahd_name(ahd));
809 saved_modes = ahd_save_modes(ahd);
810 ahd_dump_card_state(ahd);
811 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
812 for (i = 0, reg = DF0PCISTAT; i < 8; i++, reg++) {
813
814 if (i == 5)
815 continue;
816 pci_status[i] = ahd_inb(ahd, reg);
817 /* Clear latched errors. So our interrupt deasserts. */
818 ahd_outb(ahd, reg, pci_status[i]);
819 }
820
821 for (i = 0; i < 8; i++) {
822 u_int bit;
823
824 if (i == 5)
825 continue;
826
827 for (bit = 0; bit < 8; bit++) {
828
829 if ((pci_status[i] & (0x1 << bit)) != 0) {
830 static const char *s;
831
832 s = pci_status_strings[bit];
833 if (i == 7/*TARG*/ && bit == 3)
834 s = "%s: Signaled Target Abort\n";
835 printk(s, ahd_name(ahd), pci_status_source[i]);
836 }
837 }
838 }
839 pci_status1 = ahd_pci_read_config(ahd->dev_softc,
840 PCIR_STATUS + 1, /*bytes*/1);
841 ahd_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
842 pci_status1, /*bytes*/1);
843 ahd_restore_modes(ahd, saved_modes);
844 ahd_outb(ahd, CLRINT, CLRPCIINT);
845 ahd_unpause(ahd);
846 }
847
848 static void
849 ahd_pci_split_intr(struct ahd_softc *ahd, u_int intstat)
850 {
851 uint8_t split_status[4];
852 uint8_t split_status1[4];
853 uint8_t sg_split_status[2];
854 uint8_t sg_split_status1[2];
855 ahd_mode_state saved_modes;
856 u_int i;
857 uint16_t pcix_status;
858
859 /*
860 * Check for splits in all modes. Modes 0 and 1
861 * additionally have SG engine splits to look at.
862 */
863 pcix_status = ahd_pci_read_config(ahd->dev_softc, PCIXR_STATUS,
864 /*bytes*/2);
865 printk("%s: PCI Split Interrupt - PCI-X status = 0x%x\n",
866 ahd_name(ahd), pcix_status);
867 saved_modes = ahd_save_modes(ahd);
868 for (i = 0; i < 4; i++) {
869 ahd_set_modes(ahd, i, i);
870
871 split_status[i] = ahd_inb(ahd, DCHSPLTSTAT0);
872 split_status1[i] = ahd_inb(ahd, DCHSPLTSTAT1);
873 /* Clear latched errors. So our interrupt deasserts. */
874 ahd_outb(ahd, DCHSPLTSTAT0, split_status[i]);
875 ahd_outb(ahd, DCHSPLTSTAT1, split_status1[i]);
876 if (i > 1)
877 continue;
878 sg_split_status[i] = ahd_inb(ahd, SGSPLTSTAT0);
879 sg_split_status1[i] = ahd_inb(ahd, SGSPLTSTAT1);
880 /* Clear latched errors. So our interrupt deasserts. */
881 ahd_outb(ahd, SGSPLTSTAT0, sg_split_status[i]);
882 ahd_outb(ahd, SGSPLTSTAT1, sg_split_status1[i]);
883 }
884
885 for (i = 0; i < 4; i++) {
886 u_int bit;
887
888 for (bit = 0; bit < 8; bit++) {
889
890 if ((split_status[i] & (0x1 << bit)) != 0) {
891 static const char *s;
892
893 s = split_status_strings[bit];
894 printk(s, ahd_name(ahd),
895 split_status_source[i]);
896 }
897
898 if (i > 1)
899 continue;
900
901 if ((sg_split_status[i] & (0x1 << bit)) != 0) {
902 static const char *s;
903
904 s = split_status_strings[bit];
905 printk(s, ahd_name(ahd), "SG");
906 }
907 }
908 }
909 /*
910 * Clear PCI-X status bits.
911 */
912 ahd_pci_write_config(ahd->dev_softc, PCIXR_STATUS,
913 pcix_status, /*bytes*/2);
914 ahd_outb(ahd, CLRINT, CLRSPLTINT);
915 ahd_restore_modes(ahd, saved_modes);
916 }
917
918 static int
919 ahd_aic7901_setup(struct ahd_softc *ahd)
920 {
921
922 ahd->chip = AHD_AIC7901;
923 ahd->features = AHD_AIC7901_FE;
924 return (ahd_aic790X_setup(ahd));
925 }
926
927 static int
928 ahd_aic7901A_setup(struct ahd_softc *ahd)
929 {
930
931 ahd->chip = AHD_AIC7901A;
932 ahd->features = AHD_AIC7901A_FE;
933 return (ahd_aic790X_setup(ahd));
934 }
935
936 static int
937 ahd_aic7902_setup(struct ahd_softc *ahd)
938 {
939 ahd->chip = AHD_AIC7902;
940 ahd->features = AHD_AIC7902_FE;
941 return (ahd_aic790X_setup(ahd));
942 }
943
944 static int
945 ahd_aic790X_setup(struct ahd_softc *ahd)
946 {
947 ahd_dev_softc_t pci;
948 u_int rev;
949
950 pci = ahd->dev_softc;
951 rev = ahd_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
952 if (rev < ID_AIC7902_PCI_REV_A4) {
953 printk("%s: Unable to attach to unsupported chip revision %d\n",
954 ahd_name(ahd), rev);
955 ahd_pci_write_config(pci, PCIR_COMMAND, 0, /*bytes*/2);
956 return (ENXIO);
957 }
958 ahd->channel = ahd_get_pci_function(pci) + 'A';
959 if (rev < ID_AIC7902_PCI_REV_B0) {
960 /*
961 * Enable A series workarounds.
962 */
963 ahd->bugs |= AHD_SENT_SCB_UPDATE_BUG|AHD_ABORT_LQI_BUG
964 | AHD_PKT_BITBUCKET_BUG|AHD_LONG_SETIMO_BUG
965 | AHD_NLQICRC_DELAYED_BUG|AHD_SCSIRST_BUG
966 | AHD_LQO_ATNO_BUG|AHD_AUTOFLUSH_BUG
967 | AHD_CLRLQO_AUTOCLR_BUG|AHD_PCIX_MMAPIO_BUG
968 | AHD_PCIX_CHIPRST_BUG|AHD_PCIX_SCBRAM_RD_BUG
969 | AHD_PKTIZED_STATUS_BUG|AHD_PKT_LUN_BUG
970 | AHD_MDFF_WSCBPTR_BUG|AHD_REG_SLOW_SETTLE_BUG
971 | AHD_SET_MODE_BUG|AHD_BUSFREEREV_BUG
972 | AHD_NONPACKFIFO_BUG|AHD_PACED_NEGTABLE_BUG
973 | AHD_FAINT_LED_BUG;
974
975 /*
976 * IO Cell parameter setup.
977 */
978 AHD_SET_PRECOMP(ahd, AHD_PRECOMP_CUTBACK_29);
979
980 if ((ahd->flags & AHD_HP_BOARD) == 0)
981 AHD_SET_SLEWRATE(ahd, AHD_SLEWRATE_DEF_REVA);
982 } else {
983 /* This is revision B and newer. */
984 extern uint32_t aic79xx_slowcrc;
985 u_int devconfig1;
986
987 ahd->features |= AHD_RTI|AHD_NEW_IOCELL_OPTS
988 | AHD_NEW_DFCNTRL_OPTS|AHD_FAST_CDB_DELIVERY
989 | AHD_BUSFREEREV_BUG;
990 ahd->bugs |= AHD_LQOOVERRUN_BUG|AHD_EARLY_REQ_BUG;
991
992 /* If the user requested that the SLOWCRC bit to be set. */
993 if (aic79xx_slowcrc)
994 ahd->features |= AHD_AIC79XXB_SLOWCRC;
995
996 /*
997 * Some issues have been resolved in the 7901B.
998 */
999 if ((ahd->features & AHD_MULTI_FUNC) != 0)
1000 ahd->bugs |= AHD_INTCOLLISION_BUG|AHD_ABORT_LQI_BUG;
1001
1002 /*
1003 * IO Cell parameter setup.
1004 */
1005 AHD_SET_PRECOMP(ahd, AHD_PRECOMP_CUTBACK_29);
1006 AHD_SET_SLEWRATE(ahd, AHD_SLEWRATE_DEF_REVB);
1007 AHD_SET_AMPLITUDE(ahd, AHD_AMPLITUDE_DEF);
1008
1009 /*
1010 * Set the PREQDIS bit for H2B which disables some workaround
1011 * that doesn't work on regular PCI busses.
1012 * XXX - Find out exactly what this does from the hardware
1013 * folks!
1014 */
1015 devconfig1 = ahd_pci_read_config(pci, DEVCONFIG1, /*bytes*/1);
1016 ahd_pci_write_config(pci, DEVCONFIG1,
1017 devconfig1|PREQDIS, /*bytes*/1);
1018 devconfig1 = ahd_pci_read_config(pci, DEVCONFIG1, /*bytes*/1);
1019 }
1020
1021 return (0);
1022 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree