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Merge tag 'drm-next-2019-07-16' of git://anongit.freedesktop.org/drm/drm
[linux-2.6-block.git] / drivers / scsi / aic7xxx / aic79xx_pci.c
CommitLineData
1da177e4
LT		 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 *
3fb08612 41 * $Id: //depot/aic7xxx/aic7xxx/aic79xx_pci.c#92 $
1da177e4
LT		 42 */
43
1da177e4
LT		 44#include "aic79xx_osm.h"
45#include "aic79xx_inline.h"
1da177e4
LT		 46#include "aic79xx_pci.h"
47
1beb6fa8 48static inline uint64_t
1da177e4
LT		 49ahd_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
50{
51 uint64_t id;
52
53 id = subvendor
54 | (subdevice << 16)
55 | ((uint64_t)vendor << 32)
56 | ((uint64_t)device << 48);
57
58 return (id);
59}
60
61#define ID_AIC7902_PCI_REV_A4 0x3
62#define ID_AIC7902_PCI_REV_B0 0x10
63#define SUBID_HP 0x0E11
64
65#define DEVID_9005_HOSTRAID(id) ((id) & 0x80)
66
67#define DEVID_9005_TYPE(id) ((id) & 0xF)
68#define DEVID_9005_TYPE_HBA 0x0 /* Standard Card */
69#define DEVID_9005_TYPE_HBA_2EXT 0x1 /* 2 External Ports */
70#define DEVID_9005_TYPE_IROC 0x8 /* Raid(0,1,10) Card */
71#define DEVID_9005_TYPE_MB 0xF /* On Motherboard */
72
73#define DEVID_9005_MFUNC(id) ((id) & 0x10)
74
75#define DEVID_9005_PACKETIZED(id) ((id) & 0x8000)
76
77#define SUBID_9005_TYPE(id) ((id) & 0xF)
78#define SUBID_9005_TYPE_HBA 0x0 /* Standard Card */
79#define SUBID_9005_TYPE_MB 0xF /* On Motherboard */
80
81#define SUBID_9005_AUTOTERM(id) (((id) & 0x10) == 0)
82
83#define SUBID_9005_LEGACYCONN_FUNC(id) ((id) & 0x20)
84
55048021 85#define SUBID_9005_SEEPTYPE(id) (((id) & 0x0C0) >> 6)
1da177e4
LT		 86#define SUBID_9005_SEEPTYPE_NONE 0x0
87#define SUBID_9005_SEEPTYPE_4K 0x1
88
89static ahd_device_setup_t ahd_aic7901_setup;
90static ahd_device_setup_t ahd_aic7901A_setup;
91static ahd_device_setup_t ahd_aic7902_setup;
92static ahd_device_setup_t ahd_aic790X_setup;
93
980b306a 94static const struct ahd_pci_identity ahd_pci_ident_table[] =
1da177e4
LT		 95{
96 /* aic7901 based controllers */
97 {
98 ID_AHA_29320A,
99 ID_ALL_MASK,
100 "Adaptec 29320A Ultra320 SCSI adapter",
101 ahd_aic7901_setup
102 },
103 {
104 ID_AHA_29320ALP,
105 ID_ALL_MASK,
d32adcb8
SM		 106 "Adaptec 29320ALP PCIx Ultra320 SCSI adapter",
107 ahd_aic7901_setup
108 },
109 {
110 ID_AHA_29320LPE,
111 ID_ALL_MASK,
112 "Adaptec 29320LPE PCIe Ultra320 SCSI adapter",
1da177e4
LT		 113 ahd_aic7901_setup
114 },
5e46631b
HR		 115 /* aic7901A based controllers */
116 {
117 ID_AHA_29320LP,
118 ID_ALL_MASK,
119 "Adaptec 29320LP Ultra320 SCSI adapter",
120 ahd_aic7901A_setup
121 },
1da177e4
LT		 122 /* aic7902 based controllers */
123 {
124 ID_AHA_29320,
125 ID_ALL_MASK,
126 "Adaptec 29320 Ultra320 SCSI adapter",
127 ahd_aic7902_setup
128 },
129 {
130 ID_AHA_29320B,
131 ID_ALL_MASK,
132 "Adaptec 29320B Ultra320 SCSI adapter",
133 ahd_aic7902_setup
134 },
1da177e4
LT		 135 {
136 ID_AHA_39320,
137 ID_ALL_MASK,
138 "Adaptec 39320 Ultra320 SCSI adapter",
139 ahd_aic7902_setup
140 },
141 {
142 ID_AHA_39320_B,
143 ID_ALL_MASK,
144 "Adaptec 39320 Ultra320 SCSI adapter",
145 ahd_aic7902_setup
146 },
5e46631b
HR		 147 {
148 ID_AHA_39320_B_DELL,
149 ID_ALL_MASK,
150 "Adaptec (Dell OEM) 39320 Ultra320 SCSI adapter",
151 ahd_aic7902_setup
152 },
1da177e4
LT		 153 {
154 ID_AHA_39320A,
155 ID_ALL_MASK,
156 "Adaptec 39320A Ultra320 SCSI adapter",
157 ahd_aic7902_setup
158 },
159 {
160 ID_AHA_39320D,
161 ID_ALL_MASK,
162 "Adaptec 39320D Ultra320 SCSI adapter",
163 ahd_aic7902_setup
164 },
165 {
166 ID_AHA_39320D_HP,
167 ID_ALL_MASK,
168 "Adaptec (HP OEM) 39320D Ultra320 SCSI adapter",
169 ahd_aic7902_setup
170 },
171 {
172 ID_AHA_39320D_B,
173 ID_ALL_MASK,
174 "Adaptec 39320D Ultra320 SCSI adapter",
175 ahd_aic7902_setup
176 },
177 {
178 ID_AHA_39320D_B_HP,
179 ID_ALL_MASK,
180 "Adaptec (HP OEM) 39320D Ultra320 SCSI adapter",
181 ahd_aic7902_setup
182 },
183 /* Generic chip probes for devices we don't know 'exactly' */
184 {
185 ID_AIC7901 & ID_9005_GENERIC_MASK,
186 ID_9005_GENERIC_MASK,
187 "Adaptec AIC7901 Ultra320 SCSI adapter",
188 ahd_aic7901_setup
189 },
190 {
191 ID_AIC7901A & ID_DEV_VENDOR_MASK,
192 ID_DEV_VENDOR_MASK,
193 "Adaptec AIC7901A Ultra320 SCSI adapter",
194 ahd_aic7901A_setup
195 },
196 {
197 ID_AIC7902 & ID_9005_GENERIC_MASK,
198 ID_9005_GENERIC_MASK,
199 "Adaptec AIC7902 Ultra320 SCSI adapter",
200 ahd_aic7902_setup
201 }
202};
203
289fe5b1 204static const u_int ahd_num_pci_devs = ARRAY_SIZE(ahd_pci_ident_table);
1da177e4
LT		 205
206#define DEVCONFIG 0x40
207#define PCIXINITPAT 0x0000E000ul
208#define PCIXINIT_PCI33_66 0x0000E000ul
209#define PCIXINIT_PCIX50_66 0x0000C000ul
210#define PCIXINIT_PCIX66_100 0x0000A000ul
211#define PCIXINIT_PCIX100_133 0x00008000ul
212#define PCI_BUS_MODES_INDEX(devconfig) \
213 (((devconfig) & PCIXINITPAT) >> 13)
214static const char *pci_bus_modes[] =
215{
216 "PCI bus mode unknown",
217 "PCI bus mode unknown",
218 "PCI bus mode unknown",
219 "PCI bus mode unknown",
d91ab4e7
AC		 220 "PCI-X 101-133MHz",
221 "PCI-X 67-100MHz",
222 "PCI-X 50-66MHz",
223 "PCI 33 or 66MHz"
1da177e4
LT		 224};
225
226#define TESTMODE 0x00000800ul
227#define IRDY_RST 0x00000200ul
228#define FRAME_RST 0x00000100ul
229#define PCI64BIT 0x00000080ul
230#define MRDCEN 0x00000040ul
231#define ENDIANSEL 0x00000020ul
232#define MIXQWENDIANEN 0x00000008ul
233#define DACEN 0x00000004ul
234#define STPWLEVEL 0x00000002ul
235#define QWENDIANSEL 0x00000001ul
236
237#define DEVCONFIG1 0x44
238#define PREQDIS 0x01
239
240#define CSIZE_LATTIME 0x0c
241#define CACHESIZE 0x000000fful
242#define LATTIME 0x0000ff00ul
243
244static int ahd_check_extport(struct ahd_softc *ahd);
245static void ahd_configure_termination(struct ahd_softc *ahd,
246 u_int adapter_control);
247static void ahd_pci_split_intr(struct ahd_softc *ahd, u_int intstat);
289fe5b1 248static void ahd_pci_intr(struct ahd_softc *ahd);
1da177e4 249
980b306a 250const struct ahd_pci_identity *
1da177e4
LT		 251ahd_find_pci_device(ahd_dev_softc_t pci)
252{
253 uint64_t full_id;
254 uint16_t device;
255 uint16_t vendor;
256 uint16_t subdevice;
257 uint16_t subvendor;
980b306a 258 const struct ahd_pci_identity *entry;
1da177e4
LT		 259 u_int i;
260
261 vendor = ahd_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
262 device = ahd_pci_read_config(pci, PCIR_DEVICE, /*bytes*/2);
263 subvendor = ahd_pci_read_config(pci, PCIR_SUBVEND_0, /*bytes*/2);
264 subdevice = ahd_pci_read_config(pci, PCIR_SUBDEV_0, /*bytes*/2);
265 full_id = ahd_compose_id(device,
266 vendor,
267 subdevice,
268 subvendor);
269
270 /*
271 * Controllers, mask out the IROC/HostRAID bit
272 */
273
274 full_id &= ID_ALL_IROC_MASK;
275
276 for (i = 0; i < ahd_num_pci_devs; i++) {
277 entry = &ahd_pci_ident_table[i];
278 if (entry->full_id == (full_id & entry->id_mask)) {
279 /* Honor exclusion entries. */
280 if (entry->name == NULL)
281 return (NULL);
282 return (entry);
283 }
284 }
285 return (NULL);
286}
287
288int
980b306a 289ahd_pci_config(struct ahd_softc *ahd, const struct ahd_pci_identity *entry)
1da177e4 290{
1da177e4
LT		 291 u_int command;
292 uint32_t devconfig;
293 uint16_t subvendor;
294 int error;
295
1da177e4
LT		 296 ahd->description = entry->name;
297 /*
298 * Record if this is an HP board.
299 */
300 subvendor = ahd_pci_read_config(ahd->dev_softc,
301 PCIR_SUBVEND_0, /*bytes*/2);
302 if (subvendor == SUBID_HP)
303 ahd->flags |= AHD_HP_BOARD;
304
305 error = entry->setup(ahd);
306 if (error != 0)
307 return (error);
308
309 devconfig = ahd_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4);
310 if ((devconfig & PCIXINITPAT) == PCIXINIT_PCI33_66) {
311 ahd->chip |= AHD_PCI;
312 /* Disable PCIX workarounds when running in PCI mode. */
313 ahd->bugs &= ~AHD_PCIX_BUG_MASK;
314 } else {
315 ahd->chip |= AHD_PCIX;
316 }
317 ahd->bus_description = pci_bus_modes[PCI_BUS_MODES_INDEX(devconfig)];
318
319 ahd_power_state_change(ahd, AHD_POWER_STATE_D0);
320
321 error = ahd_pci_map_registers(ahd);
322 if (error != 0)
323 return (error);
324
325 /*
326 * If we need to support high memory, enable dual
327 * address cycles. This bit must be set to enable
328 * high address bit generation even if we are on a
329 * 64bit bus (PCI64BIT set in devconfig).
330 */
331 if ((ahd->flags & (AHD_39BIT_ADDRESSING|AHD_64BIT_ADDRESSING)) != 0) {
1da177e4 332 if (bootverbose)
48813cf9 333 printk("%s: Enabling 39Bit Addressing\n",
1da177e4
LT		 334 ahd_name(ahd));
335 devconfig = ahd_pci_read_config(ahd->dev_softc,
336 DEVCONFIG, /*bytes*/4);
337 devconfig |= DACEN;
338 ahd_pci_write_config(ahd->dev_softc, DEVCONFIG,
339 devconfig, /*bytes*/4);
340 }
341
342 /* Ensure busmastering is enabled */
343 command = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/2);
344 command |= PCIM_CMD_BUSMASTEREN;
345 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, command, /*bytes*/2);
346
347 error = ahd_softc_init(ahd);
348 if (error != 0)
349 return (error);
350
351 ahd->bus_intr = ahd_pci_intr;
352
353 error = ahd_reset(ahd, /*reinit*/FALSE);
354 if (error != 0)
355 return (ENXIO);
356
357 ahd->pci_cachesize =
358 ahd_pci_read_config(ahd->dev_softc, CSIZE_LATTIME,
359 /*bytes*/1) & CACHESIZE;
360 ahd->pci_cachesize *= 4;
361
362 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
363 /* See if we have a SEEPROM and perform auto-term */
364 error = ahd_check_extport(ahd);
365 if (error != 0)
366 return (error);
367
368 /* Core initialization */
369 error = ahd_init(ahd);
370 if (error != 0)
371 return (error);
a2f5bfcf 372 ahd->init_level++;
1da177e4
LT		 373
374 /*
375 * Allow interrupts now that we are completely setup.
376 */
a2f5bfcf 377 return ahd_pci_map_int(ahd);
1da177e4
LT		 378}
379
67eb6336 380#ifdef CONFIG_PM
b5720729
HR		 381void
382ahd_pci_suspend(struct ahd_softc *ahd)
383{
384 /*
385 * Save chip register configuration data for chip resets
386 * that occur during runtime and resume events.
387 */
388 ahd->suspend_state.pci_state.devconfig =
389 ahd_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4);
390 ahd->suspend_state.pci_state.command =
391 ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/1);
392 ahd->suspend_state.pci_state.csize_lattime =
393 ahd_pci_read_config(ahd->dev_softc, CSIZE_LATTIME, /*bytes*/1);
394
395}
396
397void
398ahd_pci_resume(struct ahd_softc *ahd)
399{
400 ahd_pci_write_config(ahd->dev_softc, DEVCONFIG,
401 ahd->suspend_state.pci_state.devconfig, /*bytes*/4);
402 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
403 ahd->suspend_state.pci_state.command, /*bytes*/1);
404 ahd_pci_write_config(ahd->dev_softc, CSIZE_LATTIME,
405 ahd->suspend_state.pci_state.csize_lattime, /*bytes*/1);
406}
67eb6336 407#endif
b5720729 408
1da177e4
LT		 409/*
410 * Perform some simple tests that should catch situations where
411 * our registers are invalidly mapped.
412 */
413int
414ahd_pci_test_register_access(struct ahd_softc *ahd)
415{
416 uint32_t cmd;
417 u_int targpcistat;
418 u_int pci_status1;
419 int error;
420 uint8_t hcntrl;
421
422 error = EIO;
423
424 /*
425 * Enable PCI error interrupt status, but suppress NMIs
426 * generated by SERR raised due to target aborts.
427 */
428 cmd = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/2);
429 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
430 cmd & ~PCIM_CMD_SERRESPEN, /*bytes*/2);
431
432 /*
433 * First a simple test to see if any
434 * registers can be read. Reading
435 * HCNTRL has no side effects and has
436 * at least one bit that is guaranteed to
437 * be zero so it is a good register to
438 * use for this test.
439 */
440 hcntrl = ahd_inb(ahd, HCNTRL);
441 if (hcntrl == 0xFF)
442 goto fail;
443
444 /*
445 * Next create a situation where write combining
446 * or read prefetching could be initiated by the
447 * CPU or host bridge. Our device does not support
448 * either, so look for data corruption and/or flaged
449 * PCI errors. First pause without causing another
450 * chip reset.
451 */
452 hcntrl &= ~CHIPRST;
453 ahd_outb(ahd, HCNTRL, hcntrl|PAUSE);
454 while (ahd_is_paused(ahd) == 0)
455 ;
456
457 /* Clear any PCI errors that occurred before our driver attached. */
458 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
459 targpcistat = ahd_inb(ahd, TARGPCISTAT);
460 ahd_outb(ahd, TARGPCISTAT, targpcistat);
461 pci_status1 = ahd_pci_read_config(ahd->dev_softc,
462 PCIR_STATUS + 1, /*bytes*/1);
463 ahd_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
464 pci_status1, /*bytes*/1);
465 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
466 ahd_outb(ahd, CLRINT, CLRPCIINT);
467
468 ahd_outb(ahd, SEQCTL0, PERRORDIS);
469 ahd_outl(ahd, SRAM_BASE, 0x5aa555aa);
470 if (ahd_inl(ahd, SRAM_BASE) != 0x5aa555aa)
471 goto fail;
472
473 if ((ahd_inb(ahd, INTSTAT) & PCIINT) != 0) {
1da177e4
LT		 474 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
475 targpcistat = ahd_inb(ahd, TARGPCISTAT);
476 if ((targpcistat & STA) != 0)
477 goto fail;
478 }
479
480 error = 0;
481
482fail:
483 if ((ahd_inb(ahd, INTSTAT) & PCIINT) != 0) {
484
485 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
486 targpcistat = ahd_inb(ahd, TARGPCISTAT);
487
488 /* Silently clear any latched errors. */
489 ahd_outb(ahd, TARGPCISTAT, targpcistat);
490 pci_status1 = ahd_pci_read_config(ahd->dev_softc,
491 PCIR_STATUS + 1, /*bytes*/1);
492 ahd_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
493 pci_status1, /*bytes*/1);
494 ahd_outb(ahd, CLRINT, CLRPCIINT);
495 }
496 ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS);
497 ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, cmd, /*bytes*/2);
498 return (error);
499}
500
501/*
502 * Check the external port logic for a serial eeprom
503 * and termination/cable detection contrls.
504 */
505static int
506ahd_check_extport(struct ahd_softc *ahd)
507{
508 struct vpd_config vpd;
509 struct seeprom_config *sc;
510 u_int adapter_control;
511 int have_seeprom;
512 int error;
513
514 sc = ahd->seep_config;
515 have_seeprom = ahd_acquire_seeprom(ahd);
516 if (have_seeprom) {
517 u_int start_addr;
518
519 /*
520 * Fetch VPD for this function and parse it.
521 */
522 if (bootverbose)
48813cf9 523 printk("%s: Reading VPD from SEEPROM...",
1da177e4
LT		 524 ahd_name(ahd));
525
526 /* Address is always in units of 16bit words */
527 start_addr = ((2 * sizeof(*sc))
528 + (sizeof(vpd) * (ahd->channel - 'A'))) / 2;
529
530 error = ahd_read_seeprom(ahd, (uint16_t *)&vpd,
531 start_addr, sizeof(vpd)/2,
532 /*bytestream*/TRUE);
533 if (error == 0)
534 error = ahd_parse_vpddata(ahd, &vpd);
535 if (bootverbose)
48813cf9 536 printk("%s: VPD parsing %s\n",
1da177e4
LT		 537 ahd_name(ahd),
538 error == 0 ? "successful" : "failed");
539
540 if (bootverbose)
48813cf9 541 printk("%s: Reading SEEPROM...", ahd_name(ahd));
1da177e4
LT		 542
543 /* Address is always in units of 16bit words */
544 start_addr = (sizeof(*sc) / 2) * (ahd->channel - 'A');
545
546 error = ahd_read_seeprom(ahd, (uint16_t *)sc,
547 start_addr, sizeof(*sc)/2,
548 /*bytestream*/FALSE);
549
550 if (error != 0) {
48813cf9 551 printk("Unable to read SEEPROM\n");
1da177e4
LT		 552 have_seeprom = 0;
553 } else {
554 have_seeprom = ahd_verify_cksum(sc);
555
556 if (bootverbose) {
557 if (have_seeprom == 0)
48813cf9 558 printk ("checksum error\n");
1da177e4 559 else
48813cf9 560 printk ("done.\n");
1da177e4
LT		 561 }
562 }
563 ahd_release_seeprom(ahd);
564 }
565
566 if (!have_seeprom) {
567 u_int nvram_scb;
568
569 /*
570 * Pull scratch ram settings and treat them as
571 * if they are the contents of an seeprom if
572 * the 'ADPT', 'BIOS', or 'ASPI' signature is found
573 * in SCB 0xFF. We manually compose the data as 16bit
574 * values to avoid endian issues.
575 */
576 ahd_set_scbptr(ahd, 0xFF);
577 nvram_scb = ahd_inb_scbram(ahd, SCB_BASE + NVRAM_SCB_OFFSET);
578 if (nvram_scb != 0xFF
579 && ((ahd_inb_scbram(ahd, SCB_BASE + 0) == 'A'
580 && ahd_inb_scbram(ahd, SCB_BASE + 1) == 'D'
581 && ahd_inb_scbram(ahd, SCB_BASE + 2) == 'P'
582 && ahd_inb_scbram(ahd, SCB_BASE + 3) == 'T')
583 || (ahd_inb_scbram(ahd, SCB_BASE + 0) == 'B'
584 && ahd_inb_scbram(ahd, SCB_BASE + 1) == 'I'
585 && ahd_inb_scbram(ahd, SCB_BASE + 2) == 'O'
586 && ahd_inb_scbram(ahd, SCB_BASE + 3) == 'S')
587 || (ahd_inb_scbram(ahd, SCB_BASE + 0) == 'A'
588 && ahd_inb_scbram(ahd, SCB_BASE + 1) == 'S'
589 && ahd_inb_scbram(ahd, SCB_BASE + 2) == 'P'
590 && ahd_inb_scbram(ahd, SCB_BASE + 3) == 'I'))) {
591 uint16_t *sc_data;
592 int i;
593
594 ahd_set_scbptr(ahd, nvram_scb);
595 sc_data = (uint16_t *)sc;
596 for (i = 0; i < 64; i += 2)
597 *sc_data++ = ahd_inw_scbram(ahd, SCB_BASE+i);
598 have_seeprom = ahd_verify_cksum(sc);
599 if (have_seeprom)
600 ahd->flags |= AHD_SCB_CONFIG_USED;
601 }
602 }
603
44456d37 604#ifdef AHD_DEBUG
1da177e4
LT		 605 if (have_seeprom != 0
606 && (ahd_debug & AHD_DUMP_SEEPROM) != 0) {
607 uint16_t *sc_data;
608 int i;
609
48813cf9 610 printk("%s: Seeprom Contents:", ahd_name(ahd));
1da177e4
LT		 611 sc_data = (uint16_t *)sc;
612 for (i = 0; i < (sizeof(*sc)); i += 2)
48813cf9
PE		 613 printk("\n\t0x%.4x", sc_data[i]);
614 printk("\n");
1da177e4
LT		 615 }
616#endif
617
618 if (!have_seeprom) {
619 if (bootverbose)
48813cf9 620 printk("%s: No SEEPROM available.\n", ahd_name(ahd));
1da177e4
LT		 621 ahd->flags |= AHD_USEDEFAULTS;
622 error = ahd_default_config(ahd);
623 adapter_control = CFAUTOTERM|CFSEAUTOTERM;
48813cf9 624 kfree(ahd->seep_config);
1da177e4
LT		 625 ahd->seep_config = NULL;
626 } else {
627 error = ahd_parse_cfgdata(ahd, sc);
628 adapter_control = sc->adapter_control;
629 }
630 if (error != 0)
631 return (error);
632
633 ahd_configure_termination(ahd, adapter_control);
634
635 return (0);
636}
637
638static void
639ahd_configure_termination(struct ahd_softc *ahd, u_int adapter_control)
640{
641 int error;
642 u_int sxfrctl1;
643 uint8_t termctl;
644 uint32_t devconfig;
645
646 devconfig = ahd_pci_read_config(ahd->dev_softc, DEVCONFIG, /*bytes*/4);
647 devconfig &= ~STPWLEVEL;
648 if ((ahd->flags & AHD_STPWLEVEL_A) != 0)
649 devconfig |= STPWLEVEL;
650 if (bootverbose)
48813cf9 651 printk("%s: STPWLEVEL is %s\n",
1da177e4
LT		 652 ahd_name(ahd), (devconfig & STPWLEVEL) ? "on" : "off");
653 ahd_pci_write_config(ahd->dev_softc, DEVCONFIG, devconfig, /*bytes*/4);
654
655 /* Make sure current sensing is off. */
656 if ((ahd->flags & AHD_CURRENT_SENSING) != 0) {
657 (void)ahd_write_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, 0);
658 }
659
660 /*
661 * Read to sense. Write to set.
662 */
663 error = ahd_read_flexport(ahd, FLXADDR_TERMCTL, &termctl);
664 if ((adapter_control & CFAUTOTERM) == 0) {
665 if (bootverbose)
48813cf9 666 printk("%s: Manual Primary Termination\n",
1da177e4
LT		 667 ahd_name(ahd));
668 termctl &= ~(FLX_TERMCTL_ENPRILOW|FLX_TERMCTL_ENPRIHIGH);
669 if ((adapter_control & CFSTERM) != 0)
670 termctl |= FLX_TERMCTL_ENPRILOW;
671 if ((adapter_control & CFWSTERM) != 0)
672 termctl |= FLX_TERMCTL_ENPRIHIGH;
673 } else if (error != 0) {
48813cf9 674 printk("%s: Primary Auto-Term Sensing failed! "
1da177e4
LT		 675 "Using Defaults.\n", ahd_name(ahd));
676 termctl = FLX_TERMCTL_ENPRILOW|FLX_TERMCTL_ENPRIHIGH;
677 }
678
679 if ((adapter_control & CFSEAUTOTERM) == 0) {
680 if (bootverbose)
48813cf9 681 printk("%s: Manual Secondary Termination\n",
1da177e4
LT		 682 ahd_name(ahd));
683 termctl &= ~(FLX_TERMCTL_ENSECLOW|FLX_TERMCTL_ENSECHIGH);
684 if ((adapter_control & CFSELOWTERM) != 0)
685 termctl |= FLX_TERMCTL_ENSECLOW;
686 if ((adapter_control & CFSEHIGHTERM) != 0)
687 termctl |= FLX_TERMCTL_ENSECHIGH;
688 } else if (error != 0) {
48813cf9 689 printk("%s: Secondary Auto-Term Sensing failed! "
1da177e4
LT		 690 "Using Defaults.\n", ahd_name(ahd));
691 termctl |= FLX_TERMCTL_ENSECLOW|FLX_TERMCTL_ENSECHIGH;
692 }
693
694 /*
695 * Now set the termination based on what we found.
696 */
697 sxfrctl1 = ahd_inb(ahd, SXFRCTL1) & ~STPWEN;
5e46631b 698 ahd->flags &= ~AHD_TERM_ENB_A;
1da177e4
LT		 699 if ((termctl & FLX_TERMCTL_ENPRILOW) != 0) {
700 ahd->flags |= AHD_TERM_ENB_A;
701 sxfrctl1 |= STPWEN;
702 }
703 /* Must set the latch once in order to be effective. */
704 ahd_outb(ahd, SXFRCTL1, sxfrctl1|STPWEN);
705 ahd_outb(ahd, SXFRCTL1, sxfrctl1);
706
707 error = ahd_write_flexport(ahd, FLXADDR_TERMCTL, termctl);
708 if (error != 0) {
48813cf9 709 printk("%s: Unable to set termination settings!\n",
1da177e4
LT		 710 ahd_name(ahd));
711 } else if (bootverbose) {
48813cf9 712 printk("%s: Primary High byte termination %sabled\n",
1da177e4
LT		 713 ahd_name(ahd),
714 (termctl & FLX_TERMCTL_ENPRIHIGH) ? "En" : "Dis");
715
48813cf9 716 printk("%s: Primary Low byte termination %sabled\n",
1da177e4
LT		 717 ahd_name(ahd),
718 (termctl & FLX_TERMCTL_ENPRILOW) ? "En" : "Dis");
719
48813cf9 720 printk("%s: Secondary High byte termination %sabled\n",
1da177e4
LT		 721 ahd_name(ahd),
722 (termctl & FLX_TERMCTL_ENSECHIGH) ? "En" : "Dis");
723
48813cf9 724 printk("%s: Secondary Low byte termination %sabled\n",
1da177e4
LT		 725 ahd_name(ahd),
726 (termctl & FLX_TERMCTL_ENSECLOW) ? "En" : "Dis");
727 }
728 return;
729}
730
731#define DPE 0x80
732#define SSE 0x40
733#define RMA 0x20
734#define RTA 0x10
735#define STA 0x08
736#define DPR 0x01
737
738static const char *split_status_source[] =
739{
740 "DFF0",
741 "DFF1",
742 "OVLY",
743 "CMC",
744};
745
746static const char *pci_status_source[] =
747{
748 "DFF0",
749 "DFF1",
750 "SG",
751 "CMC",
752 "OVLY",
753 "NONE",
754 "MSI",
755 "TARG"
756};
757
758static const char *split_status_strings[] =
759{
760 "%s: Received split response in %s.\n",
761 "%s: Received split completion error message in %s\n",
762 "%s: Receive overrun in %s\n",
763 "%s: Count not complete in %s\n",
764 "%s: Split completion data bucket in %s\n",
765 "%s: Split completion address error in %s\n",
766 "%s: Split completion byte count error in %s\n",
767 "%s: Signaled Target-abort to early terminate a split in %s\n"
768};
769
770static const char *pci_status_strings[] =
771{
772 "%s: Data Parity Error has been reported via PERR# in %s\n",
773 "%s: Target initial wait state error in %s\n",
774 "%s: Split completion read data parity error in %s\n",
775 "%s: Split completion address attribute parity error in %s\n",
776 "%s: Received a Target Abort in %s\n",
777 "%s: Received a Master Abort in %s\n",
778 "%s: Signal System Error Detected in %s\n",
779 "%s: Address or Write Phase Parity Error Detected in %s.\n"
780};
781
289fe5b1 782static void
1da177e4
LT		 783ahd_pci_intr(struct ahd_softc *ahd)
784{
785 uint8_t pci_status[8];
786 ahd_mode_state saved_modes;
787 u_int pci_status1;
788 u_int intstat;
789 u_int i;
790 u_int reg;
791
792 intstat = ahd_inb(ahd, INTSTAT);
793
794 if ((intstat & SPLTINT) != 0)
795 ahd_pci_split_intr(ahd, intstat);
796
797 if ((intstat & PCIINT) == 0)
798 return;
799
48813cf9 800 printk("%s: PCI error Interrupt\n", ahd_name(ahd));
1da177e4
LT		 801 saved_modes = ahd_save_modes(ahd);
802 ahd_dump_card_state(ahd);
803 ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
804 for (i = 0, reg = DF0PCISTAT; i < 8; i++, reg++) {
805
806 if (i == 5)
807 continue;
808 pci_status[i] = ahd_inb(ahd, reg);
809 /* Clear latched errors. So our interrupt deasserts. */
810 ahd_outb(ahd, reg, pci_status[i]);
811 }
812
813 for (i = 0; i < 8; i++) {
814 u_int bit;
815
816 if (i == 5)
817 continue;
818
819 for (bit = 0; bit < 8; bit++) {
820
821 if ((pci_status[i] & (0x1 << bit)) != 0) {
b413cf49 822 const char *s;
1da177e4
LT		 823
824 s = pci_status_strings[bit];
825 if (i == 7/*TARG*/ && bit == 3)
826 s = "%s: Signaled Target Abort\n";
48813cf9 827 printk(s, ahd_name(ahd), pci_status_source[i]);
1da177e4
LT		 828 }
829 }
830 }
831 pci_status1 = ahd_pci_read_config(ahd->dev_softc,
832 PCIR_STATUS + 1, /*bytes*/1);
833 ahd_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
834 pci_status1, /*bytes*/1);
835 ahd_restore_modes(ahd, saved_modes);
836 ahd_outb(ahd, CLRINT, CLRPCIINT);
837 ahd_unpause(ahd);
838}
839
840static void
841ahd_pci_split_intr(struct ahd_softc *ahd, u_int intstat)
842{
843 uint8_t split_status[4];
844 uint8_t split_status1[4];
845 uint8_t sg_split_status[2];
846 uint8_t sg_split_status1[2];
847 ahd_mode_state saved_modes;
848 u_int i;
849 uint16_t pcix_status;
850
851 /*
852 * Check for splits in all modes. Modes 0 and 1
853 * additionally have SG engine splits to look at.
854 */
855 pcix_status = ahd_pci_read_config(ahd->dev_softc, PCIXR_STATUS,
856 /*bytes*/2);
48813cf9 857 printk("%s: PCI Split Interrupt - PCI-X status = 0x%x\n",
1da177e4
LT		 858 ahd_name(ahd), pcix_status);
859 saved_modes = ahd_save_modes(ahd);
860 for (i = 0; i < 4; i++) {
861 ahd_set_modes(ahd, i, i);
862
863 split_status[i] = ahd_inb(ahd, DCHSPLTSTAT0);
864 split_status1[i] = ahd_inb(ahd, DCHSPLTSTAT1);
865 /* Clear latched errors. So our interrupt deasserts. */
866 ahd_outb(ahd, DCHSPLTSTAT0, split_status[i]);
867 ahd_outb(ahd, DCHSPLTSTAT1, split_status1[i]);
868 if (i > 1)
869 continue;
870 sg_split_status[i] = ahd_inb(ahd, SGSPLTSTAT0);
871 sg_split_status1[i] = ahd_inb(ahd, SGSPLTSTAT1);
872 /* Clear latched errors. So our interrupt deasserts. */
873 ahd_outb(ahd, SGSPLTSTAT0, sg_split_status[i]);
874 ahd_outb(ahd, SGSPLTSTAT1, sg_split_status1[i]);
875 }
876
877 for (i = 0; i < 4; i++) {
878 u_int bit;
879
880 for (bit = 0; bit < 8; bit++) {
881
b413cf49
MK		 882 if ((split_status[i] & (0x1 << bit)) != 0)
883 printk(split_status_strings[bit], ahd_name(ahd),
1da177e4 884 split_status_source[i]);
1da177e4
LT		 885
886 if (i > 1)
887 continue;
888
b413cf49
MK		 889 if ((sg_split_status[i] & (0x1 << bit)) != 0)
890 printk(split_status_strings[bit], ahd_name(ahd), "SG");
1da177e4
LT		 891 }
892 }
893 /*
894 * Clear PCI-X status bits.
895 */
896 ahd_pci_write_config(ahd->dev_softc, PCIXR_STATUS,
897 pcix_status, /*bytes*/2);
898 ahd_outb(ahd, CLRINT, CLRSPLTINT);
899 ahd_restore_modes(ahd, saved_modes);
900}
901
902static int
903ahd_aic7901_setup(struct ahd_softc *ahd)
904{
905
906 ahd->chip = AHD_AIC7901;
907 ahd->features = AHD_AIC7901_FE;
908 return (ahd_aic790X_setup(ahd));
909}
910
911static int
912ahd_aic7901A_setup(struct ahd_softc *ahd)
913{
914
915 ahd->chip = AHD_AIC7901A;
916 ahd->features = AHD_AIC7901A_FE;
917 return (ahd_aic790X_setup(ahd));
918}
919
920static int
921ahd_aic7902_setup(struct ahd_softc *ahd)
922{
923 ahd->chip = AHD_AIC7902;
924 ahd->features = AHD_AIC7902_FE;
925 return (ahd_aic790X_setup(ahd));
926}
927
928static int
929ahd_aic790X_setup(struct ahd_softc *ahd)
930{
931 ahd_dev_softc_t pci;
932 u_int rev;
933
934 pci = ahd->dev_softc;
935 rev = ahd_pci_read_config(pci, PCIR_REVID, /*bytes*/1);
936 if (rev < ID_AIC7902_PCI_REV_A4) {
48813cf9 937 printk("%s: Unable to attach to unsupported chip revision %d\n",
1da177e4
LT		 938 ahd_name(ahd), rev);
939 ahd_pci_write_config(pci, PCIR_COMMAND, 0, /*bytes*/2);
940 return (ENXIO);
941 }
942 ahd->channel = ahd_get_pci_function(pci) + 'A';
943 if (rev < ID_AIC7902_PCI_REV_B0) {
944 /*
945 * Enable A series workarounds.
946 */
947 ahd->bugs |= AHD_SENT_SCB_UPDATE_BUG|AHD_ABORT_LQI_BUG
948 | AHD_PKT_BITBUCKET_BUG|AHD_LONG_SETIMO_BUG
949 | AHD_NLQICRC_DELAYED_BUG|AHD_SCSIRST_BUG
950 | AHD_LQO_ATNO_BUG|AHD_AUTOFLUSH_BUG
951 | AHD_CLRLQO_AUTOCLR_BUG|AHD_PCIX_MMAPIO_BUG
952 | AHD_PCIX_CHIPRST_BUG|AHD_PCIX_SCBRAM_RD_BUG
953 | AHD_PKTIZED_STATUS_BUG|AHD_PKT_LUN_BUG
954 | AHD_MDFF_WSCBPTR_BUG|AHD_REG_SLOW_SETTLE_BUG
955 | AHD_SET_MODE_BUG|AHD_BUSFREEREV_BUG
956 | AHD_NONPACKFIFO_BUG|AHD_PACED_NEGTABLE_BUG
957 | AHD_FAINT_LED_BUG;
958
959 /*
b1c11812 960 * IO Cell parameter setup.
1da177e4
LT		 961 */
962 AHD_SET_PRECOMP(ahd, AHD_PRECOMP_CUTBACK_29);
963
964 if ((ahd->flags & AHD_HP_BOARD) == 0)
965 AHD_SET_SLEWRATE(ahd, AHD_SLEWRATE_DEF_REVA);
966 } else {
3fb08612
HR		 967 /* This is revision B and newer. */
968 extern uint32_t aic79xx_slowcrc;
1da177e4
LT		 969 u_int devconfig1;
970
971 ahd->features |= AHD_RTI|AHD_NEW_IOCELL_OPTS
3fb08612
HR		 972 | AHD_NEW_DFCNTRL_OPTS|AHD_FAST_CDB_DELIVERY
973 | AHD_BUSFREEREV_BUG;
1da177e4
LT		 974 ahd->bugs |= AHD_LQOOVERRUN_BUG|AHD_EARLY_REQ_BUG;
975
59c51591 976 /* If the user requested that the SLOWCRC bit to be set. */
3fb08612
HR		 977 if (aic79xx_slowcrc)
978 ahd->features |= AHD_AIC79XXB_SLOWCRC;
979
1da177e4
LT		 980 /*
981 * Some issues have been resolved in the 7901B.
982 */
983 if ((ahd->features & AHD_MULTI_FUNC) != 0)
984 ahd->bugs |= AHD_INTCOLLISION_BUG|AHD_ABORT_LQI_BUG;
985
986 /*
b1c11812 987 * IO Cell parameter setup.
1da177e4
LT		 988 */
989 AHD_SET_PRECOMP(ahd, AHD_PRECOMP_CUTBACK_29);
990 AHD_SET_SLEWRATE(ahd, AHD_SLEWRATE_DEF_REVB);
991 AHD_SET_AMPLITUDE(ahd, AHD_AMPLITUDE_DEF);
992
993 /*
994 * Set the PREQDIS bit for H2B which disables some workaround
995 * that doesn't work on regular PCI busses.
996 * XXX - Find out exactly what this does from the hardware
997 * folks!
998 */
999 devconfig1 = ahd_pci_read_config(pci, DEVCONFIG1, /*bytes*/1);
1000 ahd_pci_write_config(pci, DEVCONFIG1,
1001 devconfig1|PREQDIS, /*bytes*/1);
1002 devconfig1 = ahd_pci_read_config(pci, DEVCONFIG1, /*bytes*/1);
1003 }
1004
1005 return (0);
1006}
Linux 6.x block layer and io_uring tree(s)