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[mirror_ubuntu-bionic-kernel.git] / arch / sparc64 / kernel / pci_psycho.c
1 /* $Id: pci_psycho.c,v 1.33 2002/02/01 00:58:33 davem Exp $
2 * pci_psycho.c: PSYCHO/U2P specific PCI controller support.
3 *
4 * Copyright (C) 1997, 1998, 1999 David S. Miller (davem@caipfs.rutgers.edu)
5 * Copyright (C) 1998, 1999 Eddie C. Dost (ecd@skynet.be)
6 * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
7 */
8
9 #include <linux/kernel.h>
10 #include <linux/types.h>
11 #include <linux/pci.h>
12 #include <linux/init.h>
13 #include <linux/slab.h>
14 #include <linux/interrupt.h>
15
16 #include <asm/pbm.h>
17 #include <asm/iommu.h>
18 #include <asm/irq.h>
19 #include <asm/starfire.h>
20
21 #include "pci_impl.h"
22 #include "iommu_common.h"
23
24 /* All PSYCHO registers are 64-bits. The following accessor
25 * routines are how they are accessed. The REG parameter
26 * is a physical address.
27 */
28 #define psycho_read(__reg) \
29 ({ u64 __ret; \
30 __asm__ __volatile__("ldxa [%1] %2, %0" \
31 : "=r" (__ret) \
32 : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
33 : "memory"); \
34 __ret; \
35 })
36 #define psycho_write(__reg, __val) \
37 __asm__ __volatile__("stxa %0, [%1] %2" \
38 : /* no outputs */ \
39 : "r" (__val), "r" (__reg), \
40 "i" (ASI_PHYS_BYPASS_EC_E) \
41 : "memory")
42
43 /* Misc. PSYCHO PCI controller register offsets and definitions. */
44 #define PSYCHO_CONTROL 0x0010UL
45 #define PSYCHO_CONTROL_IMPL 0xf000000000000000UL /* Implementation of this PSYCHO*/
46 #define PSYCHO_CONTROL_VER 0x0f00000000000000UL /* Version of this PSYCHO */
47 #define PSYCHO_CONTROL_MID 0x00f8000000000000UL /* UPA Module ID of PSYCHO */
48 #define PSYCHO_CONTROL_IGN 0x0007c00000000000UL /* Interrupt Group Number */
49 #define PSYCHO_CONTROL_RESV 0x00003ffffffffff0UL /* Reserved */
50 #define PSYCHO_CONTROL_APCKEN 0x0000000000000008UL /* Address Parity Check Enable */
51 #define PSYCHO_CONTROL_APERR 0x0000000000000004UL /* Incoming System Addr Parerr */
52 #define PSYCHO_CONTROL_IAP 0x0000000000000002UL /* Invert UPA Parity */
53 #define PSYCHO_CONTROL_MODE 0x0000000000000001UL /* PSYCHO clock mode */
54 #define PSYCHO_PCIA_CTRL 0x2000UL
55 #define PSYCHO_PCIB_CTRL 0x4000UL
56 #define PSYCHO_PCICTRL_RESV1 0xfffffff000000000UL /* Reserved */
57 #define PSYCHO_PCICTRL_SBH_ERR 0x0000000800000000UL /* Streaming byte hole error */
58 #define PSYCHO_PCICTRL_SERR 0x0000000400000000UL /* SERR signal asserted */
59 #define PSYCHO_PCICTRL_SPEED 0x0000000200000000UL /* PCI speed (1 is U2P clock) */
60 #define PSYCHO_PCICTRL_RESV2 0x00000001ffc00000UL /* Reserved */
61 #define PSYCHO_PCICTRL_ARB_PARK 0x0000000000200000UL /* PCI arbitration parking */
62 #define PSYCHO_PCICTRL_RESV3 0x00000000001ff800UL /* Reserved */
63 #define PSYCHO_PCICTRL_SBH_INT 0x0000000000000400UL /* Streaming byte hole int enab */
64 #define PSYCHO_PCICTRL_WEN 0x0000000000000200UL /* Power Mgmt Wake Enable */
65 #define PSYCHO_PCICTRL_EEN 0x0000000000000100UL /* PCI Error Interrupt Enable */
66 #define PSYCHO_PCICTRL_RESV4 0x00000000000000c0UL /* Reserved */
67 #define PSYCHO_PCICTRL_AEN 0x000000000000003fUL /* PCI DVMA Arbitration Enable */
68
69 /* U2P Programmer's Manual, page 13-55, configuration space
70 * address format:
71 *
72 * 32 24 23 16 15 11 10 8 7 2 1 0
73 * ---------------------------------------------------------
74 * |0 0 0 0 0 0 0 0 1| bus | device | function | reg | 0 0 |
75 * ---------------------------------------------------------
76 */
77 #define PSYCHO_CONFIG_BASE(PBM) \
78 ((PBM)->config_space | (1UL << 24))
79 #define PSYCHO_CONFIG_ENCODE(BUS, DEVFN, REG) \
80 (((unsigned long)(BUS) << 16) | \
81 ((unsigned long)(DEVFN) << 8) | \
82 ((unsigned long)(REG)))
83
84 static void *psycho_pci_config_mkaddr(struct pci_pbm_info *pbm,
85 unsigned char bus,
86 unsigned int devfn,
87 int where)
88 {
89 if (!pbm)
90 return NULL;
91 return (void *)
92 (PSYCHO_CONFIG_BASE(pbm) |
93 PSYCHO_CONFIG_ENCODE(bus, devfn, where));
94 }
95
96 static int psycho_out_of_range(struct pci_pbm_info *pbm,
97 unsigned char bus,
98 unsigned char devfn)
99 {
100 return ((pbm->parent == 0) ||
101 ((pbm == &pbm->parent->pbm_B) &&
102 (bus == pbm->pci_first_busno) &&
103 PCI_SLOT(devfn) > 8) ||
104 ((pbm == &pbm->parent->pbm_A) &&
105 (bus == pbm->pci_first_busno) &&
106 PCI_SLOT(devfn) > 8));
107 }
108
109 /* PSYCHO PCI configuration space accessors. */
110
111 static int psycho_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
112 int where, int size, u32 *value)
113 {
114 struct pci_pbm_info *pbm = bus_dev->sysdata;
115 unsigned char bus = bus_dev->number;
116 u32 *addr;
117 u16 tmp16;
118 u8 tmp8;
119
120 switch (size) {
121 case 1:
122 *value = 0xff;
123 break;
124 case 2:
125 *value = 0xffff;
126 break;
127 case 4:
128 *value = 0xffffffff;
129 break;
130 }
131
132 addr = psycho_pci_config_mkaddr(pbm, bus, devfn, where);
133 if (!addr)
134 return PCIBIOS_SUCCESSFUL;
135
136 if (psycho_out_of_range(pbm, bus, devfn))
137 return PCIBIOS_SUCCESSFUL;
138 switch (size) {
139 case 1:
140 pci_config_read8((u8 *)addr, &tmp8);
141 *value = (u32) tmp8;
142 break;
143
144 case 2:
145 if (where & 0x01) {
146 printk("pci_read_config_word: misaligned reg [%x]\n",
147 where);
148 return PCIBIOS_SUCCESSFUL;
149 }
150 pci_config_read16((u16 *)addr, &tmp16);
151 *value = (u32) tmp16;
152 break;
153
154 case 4:
155 if (where & 0x03) {
156 printk("pci_read_config_dword: misaligned reg [%x]\n",
157 where);
158 return PCIBIOS_SUCCESSFUL;
159 }
160 pci_config_read32(addr, value);
161 break;
162 }
163 return PCIBIOS_SUCCESSFUL;
164 }
165
166 static int psycho_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
167 int where, int size, u32 value)
168 {
169 struct pci_pbm_info *pbm = bus_dev->sysdata;
170 unsigned char bus = bus_dev->number;
171 u32 *addr;
172
173 addr = psycho_pci_config_mkaddr(pbm, bus, devfn, where);
174 if (!addr)
175 return PCIBIOS_SUCCESSFUL;
176
177 if (psycho_out_of_range(pbm, bus, devfn))
178 return PCIBIOS_SUCCESSFUL;
179
180 switch (size) {
181 case 1:
182 pci_config_write8((u8 *)addr, value);
183 break;
184
185 case 2:
186 if (where & 0x01) {
187 printk("pci_write_config_word: misaligned reg [%x]\n",
188 where);
189 return PCIBIOS_SUCCESSFUL;
190 }
191 pci_config_write16((u16 *)addr, value);
192 break;
193
194 case 4:
195 if (where & 0x03) {
196 printk("pci_write_config_dword: misaligned reg [%x]\n",
197 where);
198 return PCIBIOS_SUCCESSFUL;
199 }
200 pci_config_write32(addr, value);
201 }
202 return PCIBIOS_SUCCESSFUL;
203 }
204
205 static struct pci_ops psycho_ops = {
206 .read = psycho_read_pci_cfg,
207 .write = psycho_write_pci_cfg,
208 };
209
210 /* PSYCHO interrupt mapping support. */
211 #define PSYCHO_IMAP_A_SLOT0 0x0c00UL
212 #define PSYCHO_IMAP_B_SLOT0 0x0c20UL
213 static unsigned long psycho_pcislot_imap_offset(unsigned long ino)
214 {
215 unsigned int bus = (ino & 0x10) >> 4;
216 unsigned int slot = (ino & 0x0c) >> 2;
217
218 if (bus == 0)
219 return PSYCHO_IMAP_A_SLOT0 + (slot * 8);
220 else
221 return PSYCHO_IMAP_B_SLOT0 + (slot * 8);
222 }
223
224 #define PSYCHO_IMAP_SCSI 0x1000UL
225 #define PSYCHO_IMAP_ETH 0x1008UL
226 #define PSYCHO_IMAP_BPP 0x1010UL
227 #define PSYCHO_IMAP_AU_REC 0x1018UL
228 #define PSYCHO_IMAP_AU_PLAY 0x1020UL
229 #define PSYCHO_IMAP_PFAIL 0x1028UL
230 #define PSYCHO_IMAP_KMS 0x1030UL
231 #define PSYCHO_IMAP_FLPY 0x1038UL
232 #define PSYCHO_IMAP_SHW 0x1040UL
233 #define PSYCHO_IMAP_KBD 0x1048UL
234 #define PSYCHO_IMAP_MS 0x1050UL
235 #define PSYCHO_IMAP_SER 0x1058UL
236 #define PSYCHO_IMAP_TIM0 0x1060UL
237 #define PSYCHO_IMAP_TIM1 0x1068UL
238 #define PSYCHO_IMAP_UE 0x1070UL
239 #define PSYCHO_IMAP_CE 0x1078UL
240 #define PSYCHO_IMAP_A_ERR 0x1080UL
241 #define PSYCHO_IMAP_B_ERR 0x1088UL
242 #define PSYCHO_IMAP_PMGMT 0x1090UL
243 #define PSYCHO_IMAP_GFX 0x1098UL
244 #define PSYCHO_IMAP_EUPA 0x10a0UL
245
246 static unsigned long __onboard_imap_off[] = {
247 /*0x20*/ PSYCHO_IMAP_SCSI,
248 /*0x21*/ PSYCHO_IMAP_ETH,
249 /*0x22*/ PSYCHO_IMAP_BPP,
250 /*0x23*/ PSYCHO_IMAP_AU_REC,
251 /*0x24*/ PSYCHO_IMAP_AU_PLAY,
252 /*0x25*/ PSYCHO_IMAP_PFAIL,
253 /*0x26*/ PSYCHO_IMAP_KMS,
254 /*0x27*/ PSYCHO_IMAP_FLPY,
255 /*0x28*/ PSYCHO_IMAP_SHW,
256 /*0x29*/ PSYCHO_IMAP_KBD,
257 /*0x2a*/ PSYCHO_IMAP_MS,
258 /*0x2b*/ PSYCHO_IMAP_SER,
259 /*0x2c*/ PSYCHO_IMAP_TIM0,
260 /*0x2d*/ PSYCHO_IMAP_TIM1,
261 /*0x2e*/ PSYCHO_IMAP_UE,
262 /*0x2f*/ PSYCHO_IMAP_CE,
263 /*0x30*/ PSYCHO_IMAP_A_ERR,
264 /*0x31*/ PSYCHO_IMAP_B_ERR,
265 /*0x32*/ PSYCHO_IMAP_PMGMT
266 };
267 #define PSYCHO_ONBOARD_IRQ_BASE 0x20
268 #define PSYCHO_ONBOARD_IRQ_LAST 0x32
269 #define psycho_onboard_imap_offset(__ino) \
270 __onboard_imap_off[(__ino) - PSYCHO_ONBOARD_IRQ_BASE]
271
272 #define PSYCHO_ICLR_A_SLOT0 0x1400UL
273 #define PSYCHO_ICLR_SCSI 0x1800UL
274
275 #define psycho_iclr_offset(ino) \
276 ((ino & 0x20) ? (PSYCHO_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \
277 (PSYCHO_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
278
279 /* PCI PSYCHO INO number to Sparc PIL level. */
280 static unsigned char psycho_pil_table[] = {
281 /*0x00*/0, 0, 0, 0, /* PCI A slot 0 Int A, B, C, D */
282 /*0x04*/0, 0, 0, 0, /* PCI A slot 1 Int A, B, C, D */
283 /*0x08*/0, 0, 0, 0, /* PCI A slot 2 Int A, B, C, D */
284 /*0x0c*/0, 0, 0, 0, /* PCI A slot 3 Int A, B, C, D */
285 /*0x10*/0, 0, 0, 0, /* PCI B slot 0 Int A, B, C, D */
286 /*0x14*/0, 0, 0, 0, /* PCI B slot 1 Int A, B, C, D */
287 /*0x18*/0, 0, 0, 0, /* PCI B slot 2 Int A, B, C, D */
288 /*0x1c*/0, 0, 0, 0, /* PCI B slot 3 Int A, B, C, D */
289 /*0x20*/4, /* SCSI */
290 /*0x21*/5, /* Ethernet */
291 /*0x22*/8, /* Parallel Port */
292 /*0x23*/13, /* Audio Record */
293 /*0x24*/14, /* Audio Playback */
294 /*0x25*/15, /* PowerFail */
295 /*0x26*/4, /* second SCSI */
296 /*0x27*/11, /* Floppy */
297 /*0x28*/4, /* Spare Hardware */
298 /*0x29*/9, /* Keyboard */
299 /*0x2a*/4, /* Mouse */
300 /*0x2b*/12, /* Serial */
301 /*0x2c*/10, /* Timer 0 */
302 /*0x2d*/11, /* Timer 1 */
303 /*0x2e*/15, /* Uncorrectable ECC */
304 /*0x2f*/15, /* Correctable ECC */
305 /*0x30*/15, /* PCI Bus A Error */
306 /*0x31*/15, /* PCI Bus B Error */
307 /*0x32*/15, /* Power Management */
308 };
309
310 static int __init psycho_ino_to_pil(struct pci_dev *pdev, unsigned int ino)
311 {
312 int ret;
313
314 ret = psycho_pil_table[ino];
315 if (ret == 0 && pdev == NULL) {
316 ret = 4;
317 } else if (ret == 0) {
318 switch ((pdev->class >> 16) & 0xff) {
319 case PCI_BASE_CLASS_STORAGE:
320 ret = 4;
321 break;
322
323 case PCI_BASE_CLASS_NETWORK:
324 ret = 6;
325 break;
326
327 case PCI_BASE_CLASS_DISPLAY:
328 ret = 9;
329 break;
330
331 case PCI_BASE_CLASS_MULTIMEDIA:
332 case PCI_BASE_CLASS_MEMORY:
333 case PCI_BASE_CLASS_BRIDGE:
334 case PCI_BASE_CLASS_SERIAL:
335 ret = 10;
336 break;
337
338 default:
339 ret = 4;
340 break;
341 };
342 }
343
344 return ret;
345 }
346
347 static unsigned int __init psycho_irq_build(struct pci_pbm_info *pbm,
348 struct pci_dev *pdev,
349 unsigned int ino)
350 {
351 struct ino_bucket *bucket;
352 unsigned long imap, iclr;
353 unsigned long imap_off, iclr_off;
354 int pil, inofixup = 0;
355
356 ino &= PCI_IRQ_INO;
357 if (ino < PSYCHO_ONBOARD_IRQ_BASE) {
358 /* PCI slot */
359 imap_off = psycho_pcislot_imap_offset(ino);
360 } else {
361 /* Onboard device */
362 if (ino > PSYCHO_ONBOARD_IRQ_LAST) {
363 prom_printf("psycho_irq_build: Wacky INO [%x]\n", ino);
364 prom_halt();
365 }
366 imap_off = psycho_onboard_imap_offset(ino);
367 }
368
369 /* Now build the IRQ bucket. */
370 pil = psycho_ino_to_pil(pdev, ino);
371
372 if (PIL_RESERVED(pil))
373 BUG();
374
375 imap = pbm->controller_regs + imap_off;
376 imap += 4;
377
378 iclr_off = psycho_iclr_offset(ino);
379 iclr = pbm->controller_regs + iclr_off;
380 iclr += 4;
381
382 if ((ino & 0x20) == 0)
383 inofixup = ino & 0x03;
384
385 bucket = __bucket(build_irq(pil, inofixup, iclr, imap));
386 bucket->flags |= IBF_PCI;
387
388 return __irq(bucket);
389 }
390
391 /* PSYCHO error handling support. */
392 enum psycho_error_type {
393 UE_ERR, CE_ERR, PCI_ERR
394 };
395
396 /* Helper function of IOMMU error checking, which checks out
397 * the state of the streaming buffers. The IOMMU lock is
398 * held when this is called.
399 *
400 * For the PCI error case we know which PBM (and thus which
401 * streaming buffer) caused the error, but for the uncorrectable
402 * error case we do not. So we always check both streaming caches.
403 */
404 #define PSYCHO_STRBUF_CONTROL_A 0x2800UL
405 #define PSYCHO_STRBUF_CONTROL_B 0x4800UL
406 #define PSYCHO_STRBUF_CTRL_LPTR 0x00000000000000f0UL /* LRU Lock Pointer */
407 #define PSYCHO_STRBUF_CTRL_LENAB 0x0000000000000008UL /* LRU Lock Enable */
408 #define PSYCHO_STRBUF_CTRL_RRDIS 0x0000000000000004UL /* Rerun Disable */
409 #define PSYCHO_STRBUF_CTRL_DENAB 0x0000000000000002UL /* Diagnostic Mode Enable */
410 #define PSYCHO_STRBUF_CTRL_ENAB 0x0000000000000001UL /* Streaming Buffer Enable */
411 #define PSYCHO_STRBUF_FLUSH_A 0x2808UL
412 #define PSYCHO_STRBUF_FLUSH_B 0x4808UL
413 #define PSYCHO_STRBUF_FSYNC_A 0x2810UL
414 #define PSYCHO_STRBUF_FSYNC_B 0x4810UL
415 #define PSYCHO_STC_DATA_A 0xb000UL
416 #define PSYCHO_STC_DATA_B 0xc000UL
417 #define PSYCHO_STC_ERR_A 0xb400UL
418 #define PSYCHO_STC_ERR_B 0xc400UL
419 #define PSYCHO_STCERR_WRITE 0x0000000000000002UL /* Write Error */
420 #define PSYCHO_STCERR_READ 0x0000000000000001UL /* Read Error */
421 #define PSYCHO_STC_TAG_A 0xb800UL
422 #define PSYCHO_STC_TAG_B 0xc800UL
423 #define PSYCHO_STCTAG_PPN 0x0fffffff00000000UL /* Physical Page Number */
424 #define PSYCHO_STCTAG_VPN 0x00000000ffffe000UL /* Virtual Page Number */
425 #define PSYCHO_STCTAG_VALID 0x0000000000000002UL /* Valid */
426 #define PSYCHO_STCTAG_WRITE 0x0000000000000001UL /* Writable */
427 #define PSYCHO_STC_LINE_A 0xb900UL
428 #define PSYCHO_STC_LINE_B 0xc900UL
429 #define PSYCHO_STCLINE_LINDX 0x0000000001e00000UL /* LRU Index */
430 #define PSYCHO_STCLINE_SPTR 0x00000000001f8000UL /* Dirty Data Start Pointer */
431 #define PSYCHO_STCLINE_LADDR 0x0000000000007f00UL /* Line Address */
432 #define PSYCHO_STCLINE_EPTR 0x00000000000000fcUL /* Dirty Data End Pointer */
433 #define PSYCHO_STCLINE_VALID 0x0000000000000002UL /* Valid */
434 #define PSYCHO_STCLINE_FOFN 0x0000000000000001UL /* Fetch Outstanding / Flush Necessary */
435
436 static DEFINE_SPINLOCK(stc_buf_lock);
437 static unsigned long stc_error_buf[128];
438 static unsigned long stc_tag_buf[16];
439 static unsigned long stc_line_buf[16];
440
441 static void __psycho_check_one_stc(struct pci_controller_info *p,
442 struct pci_pbm_info *pbm,
443 int is_pbm_a)
444 {
445 struct pci_strbuf *strbuf = &pbm->stc;
446 unsigned long regbase = p->pbm_A.controller_regs;
447 unsigned long err_base, tag_base, line_base;
448 u64 control;
449 int i;
450
451 if (is_pbm_a) {
452 err_base = regbase + PSYCHO_STC_ERR_A;
453 tag_base = regbase + PSYCHO_STC_TAG_A;
454 line_base = regbase + PSYCHO_STC_LINE_A;
455 } else {
456 err_base = regbase + PSYCHO_STC_ERR_B;
457 tag_base = regbase + PSYCHO_STC_TAG_B;
458 line_base = regbase + PSYCHO_STC_LINE_B;
459 }
460
461 spin_lock(&stc_buf_lock);
462
463 /* This is __REALLY__ dangerous. When we put the
464 * streaming buffer into diagnostic mode to probe
465 * it's tags and error status, we _must_ clear all
466 * of the line tag valid bits before re-enabling
467 * the streaming buffer. If any dirty data lives
468 * in the STC when we do this, we will end up
469 * invalidating it before it has a chance to reach
470 * main memory.
471 */
472 control = psycho_read(strbuf->strbuf_control);
473 psycho_write(strbuf->strbuf_control,
474 (control | PSYCHO_STRBUF_CTRL_DENAB));
475 for (i = 0; i < 128; i++) {
476 unsigned long val;
477
478 val = psycho_read(err_base + (i * 8UL));
479 psycho_write(err_base + (i * 8UL), 0UL);
480 stc_error_buf[i] = val;
481 }
482 for (i = 0; i < 16; i++) {
483 stc_tag_buf[i] = psycho_read(tag_base + (i * 8UL));
484 stc_line_buf[i] = psycho_read(line_base + (i * 8UL));
485 psycho_write(tag_base + (i * 8UL), 0UL);
486 psycho_write(line_base + (i * 8UL), 0UL);
487 }
488
489 /* OK, state is logged, exit diagnostic mode. */
490 psycho_write(strbuf->strbuf_control, control);
491
492 for (i = 0; i < 16; i++) {
493 int j, saw_error, first, last;
494
495 saw_error = 0;
496 first = i * 8;
497 last = first + 8;
498 for (j = first; j < last; j++) {
499 unsigned long errval = stc_error_buf[j];
500 if (errval != 0) {
501 saw_error++;
502 printk("PSYCHO%d(PBM%c): STC_ERR(%d)[wr(%d)rd(%d)]\n",
503 p->index,
504 (is_pbm_a ? 'A' : 'B'),
505 j,
506 (errval & PSYCHO_STCERR_WRITE) ? 1 : 0,
507 (errval & PSYCHO_STCERR_READ) ? 1 : 0);
508 }
509 }
510 if (saw_error != 0) {
511 unsigned long tagval = stc_tag_buf[i];
512 unsigned long lineval = stc_line_buf[i];
513 printk("PSYCHO%d(PBM%c): STC_TAG(%d)[PA(%016lx)VA(%08lx)V(%d)W(%d)]\n",
514 p->index,
515 (is_pbm_a ? 'A' : 'B'),
516 i,
517 ((tagval & PSYCHO_STCTAG_PPN) >> 19UL),
518 (tagval & PSYCHO_STCTAG_VPN),
519 ((tagval & PSYCHO_STCTAG_VALID) ? 1 : 0),
520 ((tagval & PSYCHO_STCTAG_WRITE) ? 1 : 0));
521 printk("PSYCHO%d(PBM%c): STC_LINE(%d)[LIDX(%lx)SP(%lx)LADDR(%lx)EP(%lx)"
522 "V(%d)FOFN(%d)]\n",
523 p->index,
524 (is_pbm_a ? 'A' : 'B'),
525 i,
526 ((lineval & PSYCHO_STCLINE_LINDX) >> 21UL),
527 ((lineval & PSYCHO_STCLINE_SPTR) >> 15UL),
528 ((lineval & PSYCHO_STCLINE_LADDR) >> 8UL),
529 ((lineval & PSYCHO_STCLINE_EPTR) >> 2UL),
530 ((lineval & PSYCHO_STCLINE_VALID) ? 1 : 0),
531 ((lineval & PSYCHO_STCLINE_FOFN) ? 1 : 0));
532 }
533 }
534
535 spin_unlock(&stc_buf_lock);
536 }
537
538 static void __psycho_check_stc_error(struct pci_controller_info *p,
539 unsigned long afsr,
540 unsigned long afar,
541 enum psycho_error_type type)
542 {
543 struct pci_pbm_info *pbm;
544
545 pbm = &p->pbm_A;
546 if (pbm->stc.strbuf_enabled)
547 __psycho_check_one_stc(p, pbm, 1);
548
549 pbm = &p->pbm_B;
550 if (pbm->stc.strbuf_enabled)
551 __psycho_check_one_stc(p, pbm, 0);
552 }
553
554 /* When an Uncorrectable Error or a PCI Error happens, we
555 * interrogate the IOMMU state to see if it is the cause.
556 */
557 #define PSYCHO_IOMMU_CONTROL 0x0200UL
558 #define PSYCHO_IOMMU_CTRL_RESV 0xfffffffff9000000UL /* Reserved */
559 #define PSYCHO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL /* Translation Error Status */
560 #define PSYCHO_IOMMU_CTRL_XLTEERR 0x0000000001000000UL /* Translation Error encountered */
561 #define PSYCHO_IOMMU_CTRL_LCKEN 0x0000000000800000UL /* Enable translation locking */
562 #define PSYCHO_IOMMU_CTRL_LCKPTR 0x0000000000780000UL /* Translation lock pointer */
563 #define PSYCHO_IOMMU_CTRL_TSBSZ 0x0000000000070000UL /* TSB Size */
564 #define PSYCHO_IOMMU_TSBSZ_1K 0x0000000000000000UL /* TSB Table 1024 8-byte entries */
565 #define PSYCHO_IOMMU_TSBSZ_2K 0x0000000000010000UL /* TSB Table 2048 8-byte entries */
566 #define PSYCHO_IOMMU_TSBSZ_4K 0x0000000000020000UL /* TSB Table 4096 8-byte entries */
567 #define PSYCHO_IOMMU_TSBSZ_8K 0x0000000000030000UL /* TSB Table 8192 8-byte entries */
568 #define PSYCHO_IOMMU_TSBSZ_16K 0x0000000000040000UL /* TSB Table 16k 8-byte entries */
569 #define PSYCHO_IOMMU_TSBSZ_32K 0x0000000000050000UL /* TSB Table 32k 8-byte entries */
570 #define PSYCHO_IOMMU_TSBSZ_64K 0x0000000000060000UL /* TSB Table 64k 8-byte entries */
571 #define PSYCHO_IOMMU_TSBSZ_128K 0x0000000000070000UL /* TSB Table 128k 8-byte entries */
572 #define PSYCHO_IOMMU_CTRL_RESV2 0x000000000000fff8UL /* Reserved */
573 #define PSYCHO_IOMMU_CTRL_TBWSZ 0x0000000000000004UL /* Assumed page size, 0=8k 1=64k */
574 #define PSYCHO_IOMMU_CTRL_DENAB 0x0000000000000002UL /* Diagnostic mode enable */
575 #define PSYCHO_IOMMU_CTRL_ENAB 0x0000000000000001UL /* IOMMU Enable */
576 #define PSYCHO_IOMMU_TSBBASE 0x0208UL
577 #define PSYCHO_IOMMU_FLUSH 0x0210UL
578 #define PSYCHO_IOMMU_TAG 0xa580UL
579 #define PSYCHO_IOMMU_TAG_ERRSTS (0x3UL << 23UL)
580 #define PSYCHO_IOMMU_TAG_ERR (0x1UL << 22UL)
581 #define PSYCHO_IOMMU_TAG_WRITE (0x1UL << 21UL)
582 #define PSYCHO_IOMMU_TAG_STREAM (0x1UL << 20UL)
583 #define PSYCHO_IOMMU_TAG_SIZE (0x1UL << 19UL)
584 #define PSYCHO_IOMMU_TAG_VPAGE 0x7ffffUL
585 #define PSYCHO_IOMMU_DATA 0xa600UL
586 #define PSYCHO_IOMMU_DATA_VALID (1UL << 30UL)
587 #define PSYCHO_IOMMU_DATA_CACHE (1UL << 28UL)
588 #define PSYCHO_IOMMU_DATA_PPAGE 0xfffffffUL
589 static void psycho_check_iommu_error(struct pci_controller_info *p,
590 unsigned long afsr,
591 unsigned long afar,
592 enum psycho_error_type type)
593 {
594 struct pci_iommu *iommu = p->pbm_A.iommu;
595 unsigned long iommu_tag[16];
596 unsigned long iommu_data[16];
597 unsigned long flags;
598 u64 control;
599 int i;
600
601 spin_lock_irqsave(&iommu->lock, flags);
602 control = psycho_read(iommu->iommu_control);
603 if (control & PSYCHO_IOMMU_CTRL_XLTEERR) {
604 char *type_string;
605
606 /* Clear the error encountered bit. */
607 control &= ~PSYCHO_IOMMU_CTRL_XLTEERR;
608 psycho_write(iommu->iommu_control, control);
609
610 switch((control & PSYCHO_IOMMU_CTRL_XLTESTAT) >> 25UL) {
611 case 0:
612 type_string = "Protection Error";
613 break;
614 case 1:
615 type_string = "Invalid Error";
616 break;
617 case 2:
618 type_string = "TimeOut Error";
619 break;
620 case 3:
621 default:
622 type_string = "ECC Error";
623 break;
624 };
625 printk("PSYCHO%d: IOMMU Error, type[%s]\n",
626 p->index, type_string);
627
628 /* Put the IOMMU into diagnostic mode and probe
629 * it's TLB for entries with error status.
630 *
631 * It is very possible for another DVMA to occur
632 * while we do this probe, and corrupt the system
633 * further. But we are so screwed at this point
634 * that we are likely to crash hard anyways, so
635 * get as much diagnostic information to the
636 * console as we can.
637 */
638 psycho_write(iommu->iommu_control,
639 control | PSYCHO_IOMMU_CTRL_DENAB);
640 for (i = 0; i < 16; i++) {
641 unsigned long base = p->pbm_A.controller_regs;
642
643 iommu_tag[i] =
644 psycho_read(base + PSYCHO_IOMMU_TAG + (i * 8UL));
645 iommu_data[i] =
646 psycho_read(base + PSYCHO_IOMMU_DATA + (i * 8UL));
647
648 /* Now clear out the entry. */
649 psycho_write(base + PSYCHO_IOMMU_TAG + (i * 8UL), 0);
650 psycho_write(base + PSYCHO_IOMMU_DATA + (i * 8UL), 0);
651 }
652
653 /* Leave diagnostic mode. */
654 psycho_write(iommu->iommu_control, control);
655
656 for (i = 0; i < 16; i++) {
657 unsigned long tag, data;
658
659 tag = iommu_tag[i];
660 if (!(tag & PSYCHO_IOMMU_TAG_ERR))
661 continue;
662
663 data = iommu_data[i];
664 switch((tag & PSYCHO_IOMMU_TAG_ERRSTS) >> 23UL) {
665 case 0:
666 type_string = "Protection Error";
667 break;
668 case 1:
669 type_string = "Invalid Error";
670 break;
671 case 2:
672 type_string = "TimeOut Error";
673 break;
674 case 3:
675 default:
676 type_string = "ECC Error";
677 break;
678 };
679 printk("PSYCHO%d: IOMMU TAG(%d)[error(%s) wr(%d) str(%d) sz(%dK) vpg(%08lx)]\n",
680 p->index, i, type_string,
681 ((tag & PSYCHO_IOMMU_TAG_WRITE) ? 1 : 0),
682 ((tag & PSYCHO_IOMMU_TAG_STREAM) ? 1 : 0),
683 ((tag & PSYCHO_IOMMU_TAG_SIZE) ? 64 : 8),
684 (tag & PSYCHO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT);
685 printk("PSYCHO%d: IOMMU DATA(%d)[valid(%d) cache(%d) ppg(%016lx)]\n",
686 p->index, i,
687 ((data & PSYCHO_IOMMU_DATA_VALID) ? 1 : 0),
688 ((data & PSYCHO_IOMMU_DATA_CACHE) ? 1 : 0),
689 (data & PSYCHO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT);
690 }
691 }
692 __psycho_check_stc_error(p, afsr, afar, type);
693 spin_unlock_irqrestore(&iommu->lock, flags);
694 }
695
696 /* Uncorrectable Errors. Cause of the error and the address are
697 * recorded in the UE_AFSR and UE_AFAR of PSYCHO. They are errors
698 * relating to UPA interface transactions.
699 */
700 #define PSYCHO_UE_AFSR 0x0030UL
701 #define PSYCHO_UEAFSR_PPIO 0x8000000000000000UL /* Primary PIO is cause */
702 #define PSYCHO_UEAFSR_PDRD 0x4000000000000000UL /* Primary DVMA read is cause */
703 #define PSYCHO_UEAFSR_PDWR 0x2000000000000000UL /* Primary DVMA write is cause */
704 #define PSYCHO_UEAFSR_SPIO 0x1000000000000000UL /* Secondary PIO is cause */
705 #define PSYCHO_UEAFSR_SDRD 0x0800000000000000UL /* Secondary DVMA read is cause */
706 #define PSYCHO_UEAFSR_SDWR 0x0400000000000000UL /* Secondary DVMA write is cause*/
707 #define PSYCHO_UEAFSR_RESV1 0x03ff000000000000UL /* Reserved */
708 #define PSYCHO_UEAFSR_BMSK 0x0000ffff00000000UL /* Bytemask of failed transfer */
709 #define PSYCHO_UEAFSR_DOFF 0x00000000e0000000UL /* Doubleword Offset */
710 #define PSYCHO_UEAFSR_MID 0x000000001f000000UL /* UPA MID causing the fault */
711 #define PSYCHO_UEAFSR_BLK 0x0000000000800000UL /* Trans was block operation */
712 #define PSYCHO_UEAFSR_RESV2 0x00000000007fffffUL /* Reserved */
713 #define PSYCHO_UE_AFAR 0x0038UL
714
715 static irqreturn_t psycho_ue_intr(int irq, void *dev_id, struct pt_regs *regs)
716 {
717 struct pci_controller_info *p = dev_id;
718 unsigned long afsr_reg = p->pbm_A.controller_regs + PSYCHO_UE_AFSR;
719 unsigned long afar_reg = p->pbm_A.controller_regs + PSYCHO_UE_AFAR;
720 unsigned long afsr, afar, error_bits;
721 int reported;
722
723 /* Latch uncorrectable error status. */
724 afar = psycho_read(afar_reg);
725 afsr = psycho_read(afsr_reg);
726
727 /* Clear the primary/secondary error status bits. */
728 error_bits = afsr &
729 (PSYCHO_UEAFSR_PPIO | PSYCHO_UEAFSR_PDRD | PSYCHO_UEAFSR_PDWR |
730 PSYCHO_UEAFSR_SPIO | PSYCHO_UEAFSR_SDRD | PSYCHO_UEAFSR_SDWR);
731 if (!error_bits)
732 return IRQ_NONE;
733 psycho_write(afsr_reg, error_bits);
734
735 /* Log the error. */
736 printk("PSYCHO%d: Uncorrectable Error, primary error type[%s]\n",
737 p->index,
738 (((error_bits & PSYCHO_UEAFSR_PPIO) ?
739 "PIO" :
740 ((error_bits & PSYCHO_UEAFSR_PDRD) ?
741 "DMA Read" :
742 ((error_bits & PSYCHO_UEAFSR_PDWR) ?
743 "DMA Write" : "???")))));
744 printk("PSYCHO%d: bytemask[%04lx] dword_offset[%lx] UPA_MID[%02lx] was_block(%d)\n",
745 p->index,
746 (afsr & PSYCHO_UEAFSR_BMSK) >> 32UL,
747 (afsr & PSYCHO_UEAFSR_DOFF) >> 29UL,
748 (afsr & PSYCHO_UEAFSR_MID) >> 24UL,
749 ((afsr & PSYCHO_UEAFSR_BLK) ? 1 : 0));
750 printk("PSYCHO%d: UE AFAR [%016lx]\n", p->index, afar);
751 printk("PSYCHO%d: UE Secondary errors [", p->index);
752 reported = 0;
753 if (afsr & PSYCHO_UEAFSR_SPIO) {
754 reported++;
755 printk("(PIO)");
756 }
757 if (afsr & PSYCHO_UEAFSR_SDRD) {
758 reported++;
759 printk("(DMA Read)");
760 }
761 if (afsr & PSYCHO_UEAFSR_SDWR) {
762 reported++;
763 printk("(DMA Write)");
764 }
765 if (!reported)
766 printk("(none)");
767 printk("]\n");
768
769 /* Interrogate IOMMU for error status. */
770 psycho_check_iommu_error(p, afsr, afar, UE_ERR);
771
772 return IRQ_HANDLED;
773 }
774
775 /* Correctable Errors. */
776 #define PSYCHO_CE_AFSR 0x0040UL
777 #define PSYCHO_CEAFSR_PPIO 0x8000000000000000UL /* Primary PIO is cause */
778 #define PSYCHO_CEAFSR_PDRD 0x4000000000000000UL /* Primary DVMA read is cause */
779 #define PSYCHO_CEAFSR_PDWR 0x2000000000000000UL /* Primary DVMA write is cause */
780 #define PSYCHO_CEAFSR_SPIO 0x1000000000000000UL /* Secondary PIO is cause */
781 #define PSYCHO_CEAFSR_SDRD 0x0800000000000000UL /* Secondary DVMA read is cause */
782 #define PSYCHO_CEAFSR_SDWR 0x0400000000000000UL /* Secondary DVMA write is cause*/
783 #define PSYCHO_CEAFSR_RESV1 0x0300000000000000UL /* Reserved */
784 #define PSYCHO_CEAFSR_ESYND 0x00ff000000000000UL /* Syndrome Bits */
785 #define PSYCHO_CEAFSR_BMSK 0x0000ffff00000000UL /* Bytemask of failed transfer */
786 #define PSYCHO_CEAFSR_DOFF 0x00000000e0000000UL /* Double Offset */
787 #define PSYCHO_CEAFSR_MID 0x000000001f000000UL /* UPA MID causing the fault */
788 #define PSYCHO_CEAFSR_BLK 0x0000000000800000UL /* Trans was block operation */
789 #define PSYCHO_CEAFSR_RESV2 0x00000000007fffffUL /* Reserved */
790 #define PSYCHO_CE_AFAR 0x0040UL
791
792 static irqreturn_t psycho_ce_intr(int irq, void *dev_id, struct pt_regs *regs)
793 {
794 struct pci_controller_info *p = dev_id;
795 unsigned long afsr_reg = p->pbm_A.controller_regs + PSYCHO_CE_AFSR;
796 unsigned long afar_reg = p->pbm_A.controller_regs + PSYCHO_CE_AFAR;
797 unsigned long afsr, afar, error_bits;
798 int reported;
799
800 /* Latch error status. */
801 afar = psycho_read(afar_reg);
802 afsr = psycho_read(afsr_reg);
803
804 /* Clear primary/secondary error status bits. */
805 error_bits = afsr &
806 (PSYCHO_CEAFSR_PPIO | PSYCHO_CEAFSR_PDRD | PSYCHO_CEAFSR_PDWR |
807 PSYCHO_CEAFSR_SPIO | PSYCHO_CEAFSR_SDRD | PSYCHO_CEAFSR_SDWR);
808 if (!error_bits)
809 return IRQ_NONE;
810 psycho_write(afsr_reg, error_bits);
811
812 /* Log the error. */
813 printk("PSYCHO%d: Correctable Error, primary error type[%s]\n",
814 p->index,
815 (((error_bits & PSYCHO_CEAFSR_PPIO) ?
816 "PIO" :
817 ((error_bits & PSYCHO_CEAFSR_PDRD) ?
818 "DMA Read" :
819 ((error_bits & PSYCHO_CEAFSR_PDWR) ?
820 "DMA Write" : "???")))));
821
822 /* XXX Use syndrome and afar to print out module string just like
823 * XXX UDB CE trap handler does... -DaveM
824 */
825 printk("PSYCHO%d: syndrome[%02lx] bytemask[%04lx] dword_offset[%lx] "
826 "UPA_MID[%02lx] was_block(%d)\n",
827 p->index,
828 (afsr & PSYCHO_CEAFSR_ESYND) >> 48UL,
829 (afsr & PSYCHO_CEAFSR_BMSK) >> 32UL,
830 (afsr & PSYCHO_CEAFSR_DOFF) >> 29UL,
831 (afsr & PSYCHO_CEAFSR_MID) >> 24UL,
832 ((afsr & PSYCHO_CEAFSR_BLK) ? 1 : 0));
833 printk("PSYCHO%d: CE AFAR [%016lx]\n", p->index, afar);
834 printk("PSYCHO%d: CE Secondary errors [", p->index);
835 reported = 0;
836 if (afsr & PSYCHO_CEAFSR_SPIO) {
837 reported++;
838 printk("(PIO)");
839 }
840 if (afsr & PSYCHO_CEAFSR_SDRD) {
841 reported++;
842 printk("(DMA Read)");
843 }
844 if (afsr & PSYCHO_CEAFSR_SDWR) {
845 reported++;
846 printk("(DMA Write)");
847 }
848 if (!reported)
849 printk("(none)");
850 printk("]\n");
851
852 return IRQ_HANDLED;
853 }
854
855 /* PCI Errors. They are signalled by the PCI bus module since they
856 * are associated with a specific bus segment.
857 */
858 #define PSYCHO_PCI_AFSR_A 0x2010UL
859 #define PSYCHO_PCI_AFSR_B 0x4010UL
860 #define PSYCHO_PCIAFSR_PMA 0x8000000000000000UL /* Primary Master Abort Error */
861 #define PSYCHO_PCIAFSR_PTA 0x4000000000000000UL /* Primary Target Abort Error */
862 #define PSYCHO_PCIAFSR_PRTRY 0x2000000000000000UL /* Primary Excessive Retries */
863 #define PSYCHO_PCIAFSR_PPERR 0x1000000000000000UL /* Primary Parity Error */
864 #define PSYCHO_PCIAFSR_SMA 0x0800000000000000UL /* Secondary Master Abort Error */
865 #define PSYCHO_PCIAFSR_STA 0x0400000000000000UL /* Secondary Target Abort Error */
866 #define PSYCHO_PCIAFSR_SRTRY 0x0200000000000000UL /* Secondary Excessive Retries */
867 #define PSYCHO_PCIAFSR_SPERR 0x0100000000000000UL /* Secondary Parity Error */
868 #define PSYCHO_PCIAFSR_RESV1 0x00ff000000000000UL /* Reserved */
869 #define PSYCHO_PCIAFSR_BMSK 0x0000ffff00000000UL /* Bytemask of failed transfer */
870 #define PSYCHO_PCIAFSR_BLK 0x0000000080000000UL /* Trans was block operation */
871 #define PSYCHO_PCIAFSR_RESV2 0x0000000040000000UL /* Reserved */
872 #define PSYCHO_PCIAFSR_MID 0x000000003e000000UL /* MID causing the error */
873 #define PSYCHO_PCIAFSR_RESV3 0x0000000001ffffffUL /* Reserved */
874 #define PSYCHO_PCI_AFAR_A 0x2018UL
875 #define PSYCHO_PCI_AFAR_B 0x4018UL
876
877 static irqreturn_t psycho_pcierr_intr_other(struct pci_pbm_info *pbm, int is_pbm_a)
878 {
879 unsigned long csr_reg, csr, csr_error_bits;
880 irqreturn_t ret = IRQ_NONE;
881 u16 stat;
882
883 if (is_pbm_a) {
884 csr_reg = pbm->controller_regs + PSYCHO_PCIA_CTRL;
885 } else {
886 csr_reg = pbm->controller_regs + PSYCHO_PCIB_CTRL;
887 }
888 csr = psycho_read(csr_reg);
889 csr_error_bits =
890 csr & (PSYCHO_PCICTRL_SBH_ERR | PSYCHO_PCICTRL_SERR);
891 if (csr_error_bits) {
892 /* Clear the errors. */
893 psycho_write(csr_reg, csr);
894
895 /* Log 'em. */
896 if (csr_error_bits & PSYCHO_PCICTRL_SBH_ERR)
897 printk("%s: PCI streaming byte hole error asserted.\n",
898 pbm->name);
899 if (csr_error_bits & PSYCHO_PCICTRL_SERR)
900 printk("%s: PCI SERR signal asserted.\n", pbm->name);
901 ret = IRQ_HANDLED;
902 }
903 pci_read_config_word(pbm->pci_bus->self, PCI_STATUS, &stat);
904 if (stat & (PCI_STATUS_PARITY |
905 PCI_STATUS_SIG_TARGET_ABORT |
906 PCI_STATUS_REC_TARGET_ABORT |
907 PCI_STATUS_REC_MASTER_ABORT |
908 PCI_STATUS_SIG_SYSTEM_ERROR)) {
909 printk("%s: PCI bus error, PCI_STATUS[%04x]\n",
910 pbm->name, stat);
911 pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff);
912 ret = IRQ_HANDLED;
913 }
914 return ret;
915 }
916
917 static irqreturn_t psycho_pcierr_intr(int irq, void *dev_id, struct pt_regs *regs)
918 {
919 struct pci_pbm_info *pbm = dev_id;
920 struct pci_controller_info *p = pbm->parent;
921 unsigned long afsr_reg, afar_reg;
922 unsigned long afsr, afar, error_bits;
923 int is_pbm_a, reported;
924
925 is_pbm_a = (pbm == &pbm->parent->pbm_A);
926 if (is_pbm_a) {
927 afsr_reg = p->pbm_A.controller_regs + PSYCHO_PCI_AFSR_A;
928 afar_reg = p->pbm_A.controller_regs + PSYCHO_PCI_AFAR_A;
929 } else {
930 afsr_reg = p->pbm_A.controller_regs + PSYCHO_PCI_AFSR_B;
931 afar_reg = p->pbm_A.controller_regs + PSYCHO_PCI_AFAR_B;
932 }
933
934 /* Latch error status. */
935 afar = psycho_read(afar_reg);
936 afsr = psycho_read(afsr_reg);
937
938 /* Clear primary/secondary error status bits. */
939 error_bits = afsr &
940 (PSYCHO_PCIAFSR_PMA | PSYCHO_PCIAFSR_PTA |
941 PSYCHO_PCIAFSR_PRTRY | PSYCHO_PCIAFSR_PPERR |
942 PSYCHO_PCIAFSR_SMA | PSYCHO_PCIAFSR_STA |
943 PSYCHO_PCIAFSR_SRTRY | PSYCHO_PCIAFSR_SPERR);
944 if (!error_bits)
945 return psycho_pcierr_intr_other(pbm, is_pbm_a);
946 psycho_write(afsr_reg, error_bits);
947
948 /* Log the error. */
949 printk("PSYCHO%d(PBM%c): PCI Error, primary error type[%s]\n",
950 p->index, (is_pbm_a ? 'A' : 'B'),
951 (((error_bits & PSYCHO_PCIAFSR_PMA) ?
952 "Master Abort" :
953 ((error_bits & PSYCHO_PCIAFSR_PTA) ?
954 "Target Abort" :
955 ((error_bits & PSYCHO_PCIAFSR_PRTRY) ?
956 "Excessive Retries" :
957 ((error_bits & PSYCHO_PCIAFSR_PPERR) ?
958 "Parity Error" : "???"))))));
959 printk("PSYCHO%d(PBM%c): bytemask[%04lx] UPA_MID[%02lx] was_block(%d)\n",
960 p->index, (is_pbm_a ? 'A' : 'B'),
961 (afsr & PSYCHO_PCIAFSR_BMSK) >> 32UL,
962 (afsr & PSYCHO_PCIAFSR_MID) >> 25UL,
963 (afsr & PSYCHO_PCIAFSR_BLK) ? 1 : 0);
964 printk("PSYCHO%d(PBM%c): PCI AFAR [%016lx]\n",
965 p->index, (is_pbm_a ? 'A' : 'B'), afar);
966 printk("PSYCHO%d(PBM%c): PCI Secondary errors [",
967 p->index, (is_pbm_a ? 'A' : 'B'));
968 reported = 0;
969 if (afsr & PSYCHO_PCIAFSR_SMA) {
970 reported++;
971 printk("(Master Abort)");
972 }
973 if (afsr & PSYCHO_PCIAFSR_STA) {
974 reported++;
975 printk("(Target Abort)");
976 }
977 if (afsr & PSYCHO_PCIAFSR_SRTRY) {
978 reported++;
979 printk("(Excessive Retries)");
980 }
981 if (afsr & PSYCHO_PCIAFSR_SPERR) {
982 reported++;
983 printk("(Parity Error)");
984 }
985 if (!reported)
986 printk("(none)");
987 printk("]\n");
988
989 /* For the error types shown, scan PBM's PCI bus for devices
990 * which have logged that error type.
991 */
992
993 /* If we see a Target Abort, this could be the result of an
994 * IOMMU translation error of some sort. It is extremely
995 * useful to log this information as usually it indicates
996 * a bug in the IOMMU support code or a PCI device driver.
997 */
998 if (error_bits & (PSYCHO_PCIAFSR_PTA | PSYCHO_PCIAFSR_STA)) {
999 psycho_check_iommu_error(p, afsr, afar, PCI_ERR);
1000 pci_scan_for_target_abort(p, pbm, pbm->pci_bus);
1001 }
1002 if (error_bits & (PSYCHO_PCIAFSR_PMA | PSYCHO_PCIAFSR_SMA))
1003 pci_scan_for_master_abort(p, pbm, pbm->pci_bus);
1004
1005 /* For excessive retries, PSYCHO/PBM will abort the device
1006 * and there is no way to specifically check for excessive
1007 * retries in the config space status registers. So what
1008 * we hope is that we'll catch it via the master/target
1009 * abort events.
1010 */
1011
1012 if (error_bits & (PSYCHO_PCIAFSR_PPERR | PSYCHO_PCIAFSR_SPERR))
1013 pci_scan_for_parity_error(p, pbm, pbm->pci_bus);
1014
1015 return IRQ_HANDLED;
1016 }
1017
1018 /* XXX What about PowerFail/PowerManagement??? -DaveM */
1019 #define PSYCHO_ECC_CTRL 0x0020
1020 #define PSYCHO_ECCCTRL_EE 0x8000000000000000UL /* Enable ECC Checking */
1021 #define PSYCHO_ECCCTRL_UE 0x4000000000000000UL /* Enable UE Interrupts */
1022 #define PSYCHO_ECCCTRL_CE 0x2000000000000000UL /* Enable CE INterrupts */
1023 #define PSYCHO_UE_INO 0x2e
1024 #define PSYCHO_CE_INO 0x2f
1025 #define PSYCHO_PCIERR_A_INO 0x30
1026 #define PSYCHO_PCIERR_B_INO 0x31
1027 static void __init psycho_register_error_handlers(struct pci_controller_info *p)
1028 {
1029 struct pci_pbm_info *pbm = &p->pbm_A; /* arbitrary */
1030 unsigned long base = p->pbm_A.controller_regs;
1031 unsigned int irq, portid = pbm->portid;
1032 u64 tmp;
1033
1034 /* Build IRQs and register handlers. */
1035 irq = psycho_irq_build(pbm, NULL, (portid << 6) | PSYCHO_UE_INO);
1036 if (request_irq(irq, psycho_ue_intr,
1037 SA_SHIRQ, "PSYCHO UE", p) < 0) {
1038 prom_printf("PSYCHO%d: Cannot register UE interrupt.\n",
1039 p->index);
1040 prom_halt();
1041 }
1042
1043 irq = psycho_irq_build(pbm, NULL, (portid << 6) | PSYCHO_CE_INO);
1044 if (request_irq(irq, psycho_ce_intr,
1045 SA_SHIRQ, "PSYCHO CE", p) < 0) {
1046 prom_printf("PSYCHO%d: Cannot register CE interrupt.\n",
1047 p->index);
1048 prom_halt();
1049 }
1050
1051 pbm = &p->pbm_A;
1052 irq = psycho_irq_build(pbm, NULL, (portid << 6) | PSYCHO_PCIERR_A_INO);
1053 if (request_irq(irq, psycho_pcierr_intr,
1054 SA_SHIRQ, "PSYCHO PCIERR", &p->pbm_A) < 0) {
1055 prom_printf("PSYCHO%d(PBMA): Cannot register PciERR interrupt.\n",
1056 p->index);
1057 prom_halt();
1058 }
1059
1060 pbm = &p->pbm_B;
1061 irq = psycho_irq_build(pbm, NULL, (portid << 6) | PSYCHO_PCIERR_B_INO);
1062 if (request_irq(irq, psycho_pcierr_intr,
1063 SA_SHIRQ, "PSYCHO PCIERR", &p->pbm_B) < 0) {
1064 prom_printf("PSYCHO%d(PBMB): Cannot register PciERR interrupt.\n",
1065 p->index);
1066 prom_halt();
1067 }
1068
1069 /* Enable UE and CE interrupts for controller. */
1070 psycho_write(base + PSYCHO_ECC_CTRL,
1071 (PSYCHO_ECCCTRL_EE |
1072 PSYCHO_ECCCTRL_UE |
1073 PSYCHO_ECCCTRL_CE));
1074
1075 /* Enable PCI Error interrupts and clear error
1076 * bits for each PBM.
1077 */
1078 tmp = psycho_read(base + PSYCHO_PCIA_CTRL);
1079 tmp |= (PSYCHO_PCICTRL_SERR |
1080 PSYCHO_PCICTRL_SBH_ERR |
1081 PSYCHO_PCICTRL_EEN);
1082 tmp &= ~(PSYCHO_PCICTRL_SBH_INT);
1083 psycho_write(base + PSYCHO_PCIA_CTRL, tmp);
1084
1085 tmp = psycho_read(base + PSYCHO_PCIB_CTRL);
1086 tmp |= (PSYCHO_PCICTRL_SERR |
1087 PSYCHO_PCICTRL_SBH_ERR |
1088 PSYCHO_PCICTRL_EEN);
1089 tmp &= ~(PSYCHO_PCICTRL_SBH_INT);
1090 psycho_write(base + PSYCHO_PCIB_CTRL, tmp);
1091 }
1092
1093 /* PSYCHO boot time probing and initialization. */
1094 static void __init psycho_resource_adjust(struct pci_dev *pdev,
1095 struct resource *res,
1096 struct resource *root)
1097 {
1098 res->start += root->start;
1099 res->end += root->start;
1100 }
1101
1102 static void __init psycho_base_address_update(struct pci_dev *pdev, int resource)
1103 {
1104 struct pcidev_cookie *pcp = pdev->sysdata;
1105 struct pci_pbm_info *pbm = pcp->pbm;
1106 struct resource *res, *root;
1107 u32 reg;
1108 int where, size, is_64bit;
1109
1110 res = &pdev->resource[resource];
1111 if (resource < 6) {
1112 where = PCI_BASE_ADDRESS_0 + (resource * 4);
1113 } else if (resource == PCI_ROM_RESOURCE) {
1114 where = pdev->rom_base_reg;
1115 } else {
1116 /* Somebody might have asked allocation of a non-standard resource */
1117 return;
1118 }
1119
1120 is_64bit = 0;
1121 if (res->flags & IORESOURCE_IO)
1122 root = &pbm->io_space;
1123 else {
1124 root = &pbm->mem_space;
1125 if ((res->flags & PCI_BASE_ADDRESS_MEM_TYPE_MASK)
1126 == PCI_BASE_ADDRESS_MEM_TYPE_64)
1127 is_64bit = 1;
1128 }
1129
1130 size = res->end - res->start;
1131 pci_read_config_dword(pdev, where, &reg);
1132 reg = ((reg & size) |
1133 (((u32)(res->start - root->start)) & ~size));
1134 if (resource == PCI_ROM_RESOURCE) {
1135 reg |= PCI_ROM_ADDRESS_ENABLE;
1136 res->flags |= IORESOURCE_ROM_ENABLE;
1137 }
1138 pci_write_config_dword(pdev, where, reg);
1139
1140 /* This knows that the upper 32-bits of the address
1141 * must be zero. Our PCI common layer enforces this.
1142 */
1143 if (is_64bit)
1144 pci_write_config_dword(pdev, where + 4, 0);
1145 }
1146
1147 static void __init pbm_config_busmastering(struct pci_pbm_info *pbm)
1148 {
1149 u8 *addr;
1150
1151 /* Set cache-line size to 64 bytes, this is actually
1152 * a nop but I do it for completeness.
1153 */
1154 addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno,
1155 0, PCI_CACHE_LINE_SIZE);
1156 pci_config_write8(addr, 64 / sizeof(u32));
1157
1158 /* Set PBM latency timer to 64 PCI clocks. */
1159 addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno,
1160 0, PCI_LATENCY_TIMER);
1161 pci_config_write8(addr, 64);
1162 }
1163
1164 static void __init pbm_scan_bus(struct pci_controller_info *p,
1165 struct pci_pbm_info *pbm)
1166 {
1167 struct pcidev_cookie *cookie = kmalloc(sizeof(*cookie), GFP_KERNEL);
1168
1169 if (!cookie) {
1170 prom_printf("PSYCHO: Critical allocation failure.\n");
1171 prom_halt();
1172 }
1173
1174 /* All we care about is the PBM. */
1175 memset(cookie, 0, sizeof(*cookie));
1176 cookie->pbm = pbm;
1177
1178 pbm->pci_bus = pci_scan_bus(pbm->pci_first_busno,
1179 p->pci_ops,
1180 pbm);
1181 pci_fixup_host_bridge_self(pbm->pci_bus);
1182 pbm->pci_bus->self->sysdata = cookie;
1183
1184 pci_fill_in_pbm_cookies(pbm->pci_bus, pbm, pbm->prom_node);
1185 pci_record_assignments(pbm, pbm->pci_bus);
1186 pci_assign_unassigned(pbm, pbm->pci_bus);
1187 pci_fixup_irq(pbm, pbm->pci_bus);
1188 pci_determine_66mhz_disposition(pbm, pbm->pci_bus);
1189 pci_setup_busmastering(pbm, pbm->pci_bus);
1190 }
1191
1192 static void __init psycho_scan_bus(struct pci_controller_info *p)
1193 {
1194 pbm_config_busmastering(&p->pbm_B);
1195 p->pbm_B.is_66mhz_capable = 0;
1196 pbm_config_busmastering(&p->pbm_A);
1197 p->pbm_A.is_66mhz_capable = 1;
1198 pbm_scan_bus(p, &p->pbm_B);
1199 pbm_scan_bus(p, &p->pbm_A);
1200
1201 /* After the PCI bus scan is complete, we can register
1202 * the error interrupt handlers.
1203 */
1204 psycho_register_error_handlers(p);
1205 }
1206
1207 static void __init psycho_iommu_init(struct pci_controller_info *p)
1208 {
1209 struct pci_iommu *iommu = p->pbm_A.iommu;
1210 unsigned long tsbbase, i;
1211 u64 control;
1212
1213 /* Setup initial software IOMMU state. */
1214 spin_lock_init(&iommu->lock);
1215 iommu->iommu_cur_ctx = 0;
1216
1217 /* Register addresses. */
1218 iommu->iommu_control = p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL;
1219 iommu->iommu_tsbbase = p->pbm_A.controller_regs + PSYCHO_IOMMU_TSBBASE;
1220 iommu->iommu_flush = p->pbm_A.controller_regs + PSYCHO_IOMMU_FLUSH;
1221 /* PSYCHO's IOMMU lacks ctx flushing. */
1222 iommu->iommu_ctxflush = 0;
1223
1224 /* We use the main control register of PSYCHO as the write
1225 * completion register.
1226 */
1227 iommu->write_complete_reg = p->pbm_A.controller_regs + PSYCHO_CONTROL;
1228
1229 /*
1230 * Invalidate TLB Entries.
1231 */
1232 control = psycho_read(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL);
1233 control |= PSYCHO_IOMMU_CTRL_DENAB;
1234 psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL, control);
1235 for(i = 0; i < 16; i++) {
1236 psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_TAG + (i * 8UL), 0);
1237 psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_DATA + (i * 8UL), 0);
1238 }
1239
1240 /* Leave diag mode enabled for full-flushing done
1241 * in pci_iommu.c
1242 */
1243
1244 iommu->dummy_page = __get_free_pages(GFP_KERNEL, 0);
1245 if (!iommu->dummy_page) {
1246 prom_printf("PSYCHO_IOMMU: Error, gfp(dummy_page) failed.\n");
1247 prom_halt();
1248 }
1249 memset((void *)iommu->dummy_page, 0, PAGE_SIZE);
1250 iommu->dummy_page_pa = (unsigned long) __pa(iommu->dummy_page);
1251
1252 /* Using assumed page size 8K with 128K entries we need 1MB iommu page
1253 * table (128K ioptes * 8 bytes per iopte). This is
1254 * page order 7 on UltraSparc.
1255 */
1256 tsbbase = __get_free_pages(GFP_KERNEL, get_order(IO_TSB_SIZE));
1257 if (!tsbbase) {
1258 prom_printf("PSYCHO_IOMMU: Error, gfp(tsb) failed.\n");
1259 prom_halt();
1260 }
1261 iommu->page_table = (iopte_t *)tsbbase;
1262 iommu->page_table_sz_bits = 17;
1263 iommu->page_table_map_base = 0xc0000000;
1264 iommu->dma_addr_mask = 0xffffffff;
1265 pci_iommu_table_init(iommu, IO_TSB_SIZE);
1266
1267 /* We start with no consistent mappings. */
1268 iommu->lowest_consistent_map =
1269 1 << (iommu->page_table_sz_bits - PBM_LOGCLUSTERS);
1270
1271 for (i = 0; i < PBM_NCLUSTERS; i++) {
1272 iommu->alloc_info[i].flush = 0;
1273 iommu->alloc_info[i].next = 0;
1274 }
1275
1276 psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_TSBBASE, __pa(tsbbase));
1277
1278 control = psycho_read(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL);
1279 control &= ~(PSYCHO_IOMMU_CTRL_TSBSZ | PSYCHO_IOMMU_CTRL_TBWSZ);
1280 control |= (PSYCHO_IOMMU_TSBSZ_128K | PSYCHO_IOMMU_CTRL_ENAB);
1281 psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL, control);
1282
1283 /* If necessary, hook us up for starfire IRQ translations. */
1284 if(this_is_starfire)
1285 p->starfire_cookie = starfire_hookup(p->pbm_A.portid);
1286 else
1287 p->starfire_cookie = NULL;
1288 }
1289
1290 #define PSYCHO_IRQ_RETRY 0x1a00UL
1291 #define PSYCHO_PCIA_DIAG 0x2020UL
1292 #define PSYCHO_PCIB_DIAG 0x4020UL
1293 #define PSYCHO_PCIDIAG_RESV 0xffffffffffffff80UL /* Reserved */
1294 #define PSYCHO_PCIDIAG_DRETRY 0x0000000000000040UL /* Disable retry limit */
1295 #define PSYCHO_PCIDIAG_DISYNC 0x0000000000000020UL /* Disable DMA wr / irq sync */
1296 #define PSYCHO_PCIDIAG_DDWSYNC 0x0000000000000010UL /* Disable DMA wr / PIO rd sync */
1297 #define PSYCHO_PCIDIAG_IDDPAR 0x0000000000000008UL /* Invert DMA data parity */
1298 #define PSYCHO_PCIDIAG_IPDPAR 0x0000000000000004UL /* Invert PIO data parity */
1299 #define PSYCHO_PCIDIAG_IPAPAR 0x0000000000000002UL /* Invert PIO address parity */
1300 #define PSYCHO_PCIDIAG_LPBACK 0x0000000000000001UL /* Enable loopback mode */
1301
1302 static void psycho_controller_hwinit(struct pci_controller_info *p)
1303 {
1304 u64 tmp;
1305
1306 /* PROM sets the IRQ retry value too low, increase it. */
1307 psycho_write(p->pbm_A.controller_regs + PSYCHO_IRQ_RETRY, 0xff);
1308
1309 /* Enable arbiter for all PCI slots. */
1310 tmp = psycho_read(p->pbm_A.controller_regs + PSYCHO_PCIA_CTRL);
1311 tmp |= PSYCHO_PCICTRL_AEN;
1312 psycho_write(p->pbm_A.controller_regs + PSYCHO_PCIA_CTRL, tmp);
1313
1314 tmp = psycho_read(p->pbm_A.controller_regs + PSYCHO_PCIB_CTRL);
1315 tmp |= PSYCHO_PCICTRL_AEN;
1316 psycho_write(p->pbm_A.controller_regs + PSYCHO_PCIB_CTRL, tmp);
1317
1318 /* Disable DMA write / PIO read synchronization on
1319 * both PCI bus segments.
1320 * [ U2P Erratum 1243770, STP2223BGA data sheet ]
1321 */
1322 tmp = psycho_read(p->pbm_A.controller_regs + PSYCHO_PCIA_DIAG);
1323 tmp |= PSYCHO_PCIDIAG_DDWSYNC;
1324 psycho_write(p->pbm_A.controller_regs + PSYCHO_PCIA_DIAG, tmp);
1325
1326 tmp = psycho_read(p->pbm_A.controller_regs + PSYCHO_PCIB_DIAG);
1327 tmp |= PSYCHO_PCIDIAG_DDWSYNC;
1328 psycho_write(p->pbm_A.controller_regs + PSYCHO_PCIB_DIAG, tmp);
1329 }
1330
1331 static void __init pbm_register_toplevel_resources(struct pci_controller_info *p,
1332 struct pci_pbm_info *pbm)
1333 {
1334 char *name = pbm->name;
1335
1336 sprintf(name, "PSYCHO%d PBM%c",
1337 p->index,
1338 (pbm == &p->pbm_A ? 'A' : 'B'));
1339 pbm->io_space.name = pbm->mem_space.name = name;
1340
1341 request_resource(&ioport_resource, &pbm->io_space);
1342 request_resource(&iomem_resource, &pbm->mem_space);
1343 pci_register_legacy_regions(&pbm->io_space,
1344 &pbm->mem_space);
1345 }
1346
1347 static void psycho_pbm_strbuf_init(struct pci_controller_info *p,
1348 struct pci_pbm_info *pbm,
1349 int is_pbm_a)
1350 {
1351 unsigned long base = pbm->controller_regs;
1352 u64 control;
1353
1354 if (is_pbm_a) {
1355 pbm->stc.strbuf_control = base + PSYCHO_STRBUF_CONTROL_A;
1356 pbm->stc.strbuf_pflush = base + PSYCHO_STRBUF_FLUSH_A;
1357 pbm->stc.strbuf_fsync = base + PSYCHO_STRBUF_FSYNC_A;
1358 } else {
1359 pbm->stc.strbuf_control = base + PSYCHO_STRBUF_CONTROL_B;
1360 pbm->stc.strbuf_pflush = base + PSYCHO_STRBUF_FLUSH_B;
1361 pbm->stc.strbuf_fsync = base + PSYCHO_STRBUF_FSYNC_B;
1362 }
1363 /* PSYCHO's streaming buffer lacks ctx flushing. */
1364 pbm->stc.strbuf_ctxflush = 0;
1365 pbm->stc.strbuf_ctxmatch_base = 0;
1366
1367 pbm->stc.strbuf_flushflag = (volatile unsigned long *)
1368 ((((unsigned long)&pbm->stc.__flushflag_buf[0])
1369 + 63UL)
1370 & ~63UL);
1371 pbm->stc.strbuf_flushflag_pa = (unsigned long)
1372 __pa(pbm->stc.strbuf_flushflag);
1373
1374 /* Enable the streaming buffer. We have to be careful
1375 * just in case OBP left it with LRU locking enabled.
1376 *
1377 * It is possible to control if PBM will be rerun on
1378 * line misses. Currently I just retain whatever setting
1379 * OBP left us with. All checks so far show it having
1380 * a value of zero.
1381 */
1382 #undef PSYCHO_STRBUF_RERUN_ENABLE
1383 #undef PSYCHO_STRBUF_RERUN_DISABLE
1384 control = psycho_read(pbm->stc.strbuf_control);
1385 control |= PSYCHO_STRBUF_CTRL_ENAB;
1386 control &= ~(PSYCHO_STRBUF_CTRL_LENAB | PSYCHO_STRBUF_CTRL_LPTR);
1387 #ifdef PSYCHO_STRBUF_RERUN_ENABLE
1388 control &= ~(PSYCHO_STRBUF_CTRL_RRDIS);
1389 #else
1390 #ifdef PSYCHO_STRBUF_RERUN_DISABLE
1391 control |= PSYCHO_STRBUF_CTRL_RRDIS;
1392 #endif
1393 #endif
1394 psycho_write(pbm->stc.strbuf_control, control);
1395
1396 pbm->stc.strbuf_enabled = 1;
1397 }
1398
1399 #define PSYCHO_IOSPACE_A 0x002000000UL
1400 #define PSYCHO_IOSPACE_B 0x002010000UL
1401 #define PSYCHO_IOSPACE_SIZE 0x00000ffffUL
1402 #define PSYCHO_MEMSPACE_A 0x100000000UL
1403 #define PSYCHO_MEMSPACE_B 0x180000000UL
1404 #define PSYCHO_MEMSPACE_SIZE 0x07fffffffUL
1405
1406 static void psycho_pbm_init(struct pci_controller_info *p,
1407 int prom_node, int is_pbm_a)
1408 {
1409 unsigned int busrange[2];
1410 struct pci_pbm_info *pbm;
1411 int err;
1412
1413 if (is_pbm_a) {
1414 pbm = &p->pbm_A;
1415 pbm->pci_first_slot = 1;
1416 pbm->io_space.start = pbm->controller_regs + PSYCHO_IOSPACE_A;
1417 pbm->mem_space.start = pbm->controller_regs + PSYCHO_MEMSPACE_A;
1418 } else {
1419 pbm = &p->pbm_B;
1420 pbm->pci_first_slot = 2;
1421 pbm->io_space.start = pbm->controller_regs + PSYCHO_IOSPACE_B;
1422 pbm->mem_space.start = pbm->controller_regs + PSYCHO_MEMSPACE_B;
1423 }
1424
1425 pbm->chip_type = PBM_CHIP_TYPE_PSYCHO;
1426 pbm->chip_version =
1427 prom_getintdefault(prom_node, "version#", 0);
1428 pbm->chip_revision =
1429 prom_getintdefault(prom_node, "module-revision#", 0);
1430
1431 pbm->io_space.end = pbm->io_space.start + PSYCHO_IOSPACE_SIZE;
1432 pbm->io_space.flags = IORESOURCE_IO;
1433 pbm->mem_space.end = pbm->mem_space.start + PSYCHO_MEMSPACE_SIZE;
1434 pbm->mem_space.flags = IORESOURCE_MEM;
1435 pbm_register_toplevel_resources(p, pbm);
1436
1437 pbm->parent = p;
1438 pbm->prom_node = prom_node;
1439 prom_getstring(prom_node, "name",
1440 pbm->prom_name,
1441 sizeof(pbm->prom_name));
1442
1443 err = prom_getproperty(prom_node, "ranges",
1444 (char *)pbm->pbm_ranges,
1445 sizeof(pbm->pbm_ranges));
1446 if (err != -1)
1447 pbm->num_pbm_ranges =
1448 (err / sizeof(struct linux_prom_pci_ranges));
1449 else
1450 pbm->num_pbm_ranges = 0;
1451
1452 err = prom_getproperty(prom_node, "interrupt-map",
1453 (char *)pbm->pbm_intmap,
1454 sizeof(pbm->pbm_intmap));
1455 if (err != -1) {
1456 pbm->num_pbm_intmap = (err / sizeof(struct linux_prom_pci_intmap));
1457 err = prom_getproperty(prom_node, "interrupt-map-mask",
1458 (char *)&pbm->pbm_intmask,
1459 sizeof(pbm->pbm_intmask));
1460 if (err == -1) {
1461 prom_printf("PSYCHO-PBM: Fatal error, no "
1462 "interrupt-map-mask.\n");
1463 prom_halt();
1464 }
1465 } else {
1466 pbm->num_pbm_intmap = 0;
1467 memset(&pbm->pbm_intmask, 0, sizeof(pbm->pbm_intmask));
1468 }
1469
1470 err = prom_getproperty(prom_node, "bus-range",
1471 (char *)&busrange[0],
1472 sizeof(busrange));
1473 if (err == 0 || err == -1) {
1474 prom_printf("PSYCHO-PBM: Fatal error, no bus-range.\n");
1475 prom_halt();
1476 }
1477 pbm->pci_first_busno = busrange[0];
1478 pbm->pci_last_busno = busrange[1];
1479
1480 psycho_pbm_strbuf_init(p, pbm, is_pbm_a);
1481 }
1482
1483 #define PSYCHO_CONFIGSPACE 0x001000000UL
1484
1485 void __init psycho_init(int node, char *model_name)
1486 {
1487 struct linux_prom64_registers pr_regs[3];
1488 struct pci_controller_info *p;
1489 struct pci_iommu *iommu;
1490 u32 upa_portid;
1491 int is_pbm_a, err;
1492
1493 upa_portid = prom_getintdefault(node, "upa-portid", 0xff);
1494
1495 for(p = pci_controller_root; p; p = p->next) {
1496 if (p->pbm_A.portid == upa_portid) {
1497 is_pbm_a = (p->pbm_A.prom_node == 0);
1498 psycho_pbm_init(p, node, is_pbm_a);
1499 return;
1500 }
1501 }
1502
1503 p = kmalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
1504 if (!p) {
1505 prom_printf("PSYCHO: Fatal memory allocation error.\n");
1506 prom_halt();
1507 }
1508 memset(p, 0, sizeof(*p));
1509 iommu = kmalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
1510 if (!iommu) {
1511 prom_printf("PSYCHO: Fatal memory allocation error.\n");
1512 prom_halt();
1513 }
1514 memset(iommu, 0, sizeof(*iommu));
1515 p->pbm_A.iommu = p->pbm_B.iommu = iommu;
1516
1517 p->next = pci_controller_root;
1518 pci_controller_root = p;
1519
1520 p->pbm_A.portid = upa_portid;
1521 p->pbm_B.portid = upa_portid;
1522 p->index = pci_num_controllers++;
1523 p->pbms_same_domain = 0;
1524 p->scan_bus = psycho_scan_bus;
1525 p->irq_build = psycho_irq_build;
1526 p->base_address_update = psycho_base_address_update;
1527 p->resource_adjust = psycho_resource_adjust;
1528 p->pci_ops = &psycho_ops;
1529
1530 err = prom_getproperty(node, "reg",
1531 (char *)&pr_regs[0],
1532 sizeof(pr_regs));
1533 if (err == 0 || err == -1) {
1534 prom_printf("PSYCHO: Fatal error, no reg property.\n");
1535 prom_halt();
1536 }
1537
1538 p->pbm_A.controller_regs = pr_regs[2].phys_addr;
1539 p->pbm_B.controller_regs = pr_regs[2].phys_addr;
1540 printk("PCI: Found PSYCHO, control regs at %016lx\n",
1541 p->pbm_A.controller_regs);
1542
1543 p->pbm_A.config_space = p->pbm_B.config_space =
1544 (pr_regs[2].phys_addr + PSYCHO_CONFIGSPACE);
1545 printk("PSYCHO: Shared PCI config space at %016lx\n",
1546 p->pbm_A.config_space);
1547
1548 /*
1549 * Psycho's PCI MEM space is mapped to a 2GB aligned area, so
1550 * we need to adjust our MEM space mask.
1551 */
1552 pci_memspace_mask = 0x7fffffffUL;
1553
1554 psycho_controller_hwinit(p);
1555
1556 psycho_iommu_init(p);
1557
1558 is_pbm_a = ((pr_regs[0].phys_addr & 0x6000) == 0x2000);
1559 psycho_pbm_init(p, node, is_pbm_a);
1560 }
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