1 /* $Id: pci_schizo.c,v 1.24 2002/01/23 11:27:32 davem Exp $
2 * pci_schizo.c: SCHIZO/TOMATILLO specific PCI controller support.
4 * Copyright (C) 2001, 2002, 2003 David S. Miller (davem@redhat.com)
7 #include <linux/kernel.h>
8 #include <linux/types.h>
10 #include <linux/init.h>
11 #include <linux/slab.h>
12 #include <linux/interrupt.h>
15 #include <asm/iommu.h>
18 #include <asm/pstate.h>
21 #include "iommu_common.h"
23 /* All SCHIZO registers are 64-bits. The following accessor
24 * routines are how they are accessed. The REG parameter
25 * is a physical address.
27 #define schizo_read(__reg) \
29 __asm__ __volatile__("ldxa [%1] %2, %0" \
31 : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
35 #define schizo_write(__reg, __val) \
36 __asm__ __volatile__("stxa %0, [%1] %2" \
38 : "r" (__val), "r" (__reg), \
39 "i" (ASI_PHYS_BYPASS_EC_E) \
42 /* This is a convention that at least Excalibur and Merlin
43 * follow. I suppose the SCHIZO used in Starcat and friends
46 * The only way I could see this changing is if the newlink
47 * block requires more space in Schizo's address space than
48 * they predicted, thus requiring an address space reorg when
49 * the newer Schizo is taped out.
52 /* Streaming buffer control register. */
53 #define SCHIZO_STRBUF_CTRL_LPTR 0x00000000000000f0UL /* LRU Lock Pointer */
54 #define SCHIZO_STRBUF_CTRL_LENAB 0x0000000000000008UL /* LRU Lock Enable */
55 #define SCHIZO_STRBUF_CTRL_RRDIS 0x0000000000000004UL /* Rerun Disable */
56 #define SCHIZO_STRBUF_CTRL_DENAB 0x0000000000000002UL /* Diagnostic Mode Enable */
57 #define SCHIZO_STRBUF_CTRL_ENAB 0x0000000000000001UL /* Streaming Buffer Enable */
59 /* IOMMU control register. */
60 #define SCHIZO_IOMMU_CTRL_RESV 0xfffffffff9000000UL /* Reserved */
61 #define SCHIZO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL /* Translation Error Status */
62 #define SCHIZO_IOMMU_CTRL_XLTEERR 0x0000000001000000UL /* Translation Error encountered */
63 #define SCHIZO_IOMMU_CTRL_LCKEN 0x0000000000800000UL /* Enable translation locking */
64 #define SCHIZO_IOMMU_CTRL_LCKPTR 0x0000000000780000UL /* Translation lock pointer */
65 #define SCHIZO_IOMMU_CTRL_TSBSZ 0x0000000000070000UL /* TSB Size */
66 #define SCHIZO_IOMMU_TSBSZ_1K 0x0000000000000000UL /* TSB Table 1024 8-byte entries */
67 #define SCHIZO_IOMMU_TSBSZ_2K 0x0000000000010000UL /* TSB Table 2048 8-byte entries */
68 #define SCHIZO_IOMMU_TSBSZ_4K 0x0000000000020000UL /* TSB Table 4096 8-byte entries */
69 #define SCHIZO_IOMMU_TSBSZ_8K 0x0000000000030000UL /* TSB Table 8192 8-byte entries */
70 #define SCHIZO_IOMMU_TSBSZ_16K 0x0000000000040000UL /* TSB Table 16k 8-byte entries */
71 #define SCHIZO_IOMMU_TSBSZ_32K 0x0000000000050000UL /* TSB Table 32k 8-byte entries */
72 #define SCHIZO_IOMMU_TSBSZ_64K 0x0000000000060000UL /* TSB Table 64k 8-byte entries */
73 #define SCHIZO_IOMMU_TSBSZ_128K 0x0000000000070000UL /* TSB Table 128k 8-byte entries */
74 #define SCHIZO_IOMMU_CTRL_RESV2 0x000000000000fff8UL /* Reserved */
75 #define SCHIZO_IOMMU_CTRL_TBWSZ 0x0000000000000004UL /* Assumed page size, 0=8k 1=64k */
76 #define SCHIZO_IOMMU_CTRL_DENAB 0x0000000000000002UL /* Diagnostic mode enable */
77 #define SCHIZO_IOMMU_CTRL_ENAB 0x0000000000000001UL /* IOMMU Enable */
79 /* Schizo config space address format is nearly identical to
82 * 32 24 23 16 15 11 10 8 7 2 1 0
83 * ---------------------------------------------------------
84 * |0 0 0 0 0 0 0 0 0| bus | device | function | reg | 0 0 |
85 * ---------------------------------------------------------
87 #define SCHIZO_CONFIG_BASE(PBM) ((PBM)->config_space)
88 #define SCHIZO_CONFIG_ENCODE(BUS, DEVFN, REG) \
89 (((unsigned long)(BUS) << 16) | \
90 ((unsigned long)(DEVFN) << 8) | \
91 ((unsigned long)(REG)))
93 static void *schizo_pci_config_mkaddr(struct pci_pbm_info *pbm,
100 bus -= pbm->pci_first_busno;
102 (SCHIZO_CONFIG_BASE(pbm) |
103 SCHIZO_CONFIG_ENCODE(bus, devfn, where));
106 /* Just make sure the bus number is in range. */
107 static int schizo_out_of_range(struct pci_pbm_info *pbm,
111 if (bus < pbm->pci_first_busno ||
112 bus > pbm->pci_last_busno)
117 /* SCHIZO PCI configuration space accessors. */
119 static int schizo_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
120 int where, int size, u32 *value)
122 struct pci_pbm_info *pbm = bus_dev->sysdata;
123 unsigned char bus = bus_dev->number;
140 addr = schizo_pci_config_mkaddr(pbm, bus, devfn, where);
142 return PCIBIOS_SUCCESSFUL;
144 if (schizo_out_of_range(pbm, bus, devfn))
145 return PCIBIOS_SUCCESSFUL;
148 pci_config_read8((u8 *)addr, &tmp8);
154 printk("pci_read_config_word: misaligned reg [%x]\n",
156 return PCIBIOS_SUCCESSFUL;
158 pci_config_read16((u16 *)addr, &tmp16);
164 printk("pci_read_config_dword: misaligned reg [%x]\n",
166 return PCIBIOS_SUCCESSFUL;
168 pci_config_read32(addr, value);
171 return PCIBIOS_SUCCESSFUL;
174 static int schizo_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
175 int where, int size, u32 value)
177 struct pci_pbm_info *pbm = bus_dev->sysdata;
178 unsigned char bus = bus_dev->number;
181 addr = schizo_pci_config_mkaddr(pbm, bus, devfn, where);
183 return PCIBIOS_SUCCESSFUL;
185 if (schizo_out_of_range(pbm, bus, devfn))
186 return PCIBIOS_SUCCESSFUL;
190 pci_config_write8((u8 *)addr, value);
195 printk("pci_write_config_word: misaligned reg [%x]\n",
197 return PCIBIOS_SUCCESSFUL;
199 pci_config_write16((u16 *)addr, value);
204 printk("pci_write_config_dword: misaligned reg [%x]\n",
206 return PCIBIOS_SUCCESSFUL;
209 pci_config_write32(addr, value);
211 return PCIBIOS_SUCCESSFUL;
214 static struct pci_ops schizo_ops = {
215 .read = schizo_read_pci_cfg,
216 .write = schizo_write_pci_cfg,
219 /* SCHIZO interrupt mapping support. Unlike Psycho, for this controller the
220 * imap/iclr registers are per-PBM.
222 #define SCHIZO_IMAP_BASE 0x1000UL
223 #define SCHIZO_ICLR_BASE 0x1400UL
225 static unsigned long schizo_imap_offset(unsigned long ino)
227 return SCHIZO_IMAP_BASE + (ino * 8UL);
230 static unsigned long schizo_iclr_offset(unsigned long ino)
232 return SCHIZO_ICLR_BASE + (ino * 8UL);
235 /* PCI SCHIZO INO number to Sparc PIL level. This table only matters for
236 * INOs which will not have an associated PCI device struct, ie. onboard
237 * EBUS devices and PCI controller internal error interrupts.
239 static unsigned char schizo_pil_table[] = {
240 /*0x00*/0, 0, 0, 0, /* PCI slot 0 Int A, B, C, D */
241 /*0x04*/0, 0, 0, 0, /* PCI slot 1 Int A, B, C, D */
242 /*0x08*/0, 0, 0, 0, /* PCI slot 2 Int A, B, C, D */
243 /*0x0c*/0, 0, 0, 0, /* PCI slot 3 Int A, B, C, D */
244 /*0x10*/0, 0, 0, 0, /* PCI slot 4 Int A, B, C, D */
245 /*0x14*/0, 0, 0, 0, /* PCI slot 5 Int A, B, C, D */
246 /*0x18*/4, /* SCSI */
247 /*0x19*/4, /* second SCSI */
248 /*0x1a*/0, /* UNKNOWN */
249 /*0x1b*/0, /* UNKNOWN */
250 /*0x1c*/8, /* Parallel */
251 /*0x1d*/5, /* Ethernet */
252 /*0x1e*/8, /* Firewire-1394 */
254 /*0x20*/13, /* Audio Record */
255 /*0x21*/14, /* Audio Playback */
256 /*0x22*/12, /* Serial */
257 /*0x23*/4, /* EBUS I2C */
258 /*0x24*/10, /* RTC Clock */
259 /*0x25*/11, /* Floppy */
260 /*0x26*/0, /* UNKNOWN */
261 /*0x27*/0, /* UNKNOWN */
262 /*0x28*/0, /* UNKNOWN */
263 /*0x29*/0, /* UNKNOWN */
264 /*0x2a*/10, /* UPA 1 */
265 /*0x2b*/10, /* UPA 2 */
266 /*0x2c*/0, /* UNKNOWN */
267 /*0x2d*/0, /* UNKNOWN */
268 /*0x2e*/0, /* UNKNOWN */
269 /*0x2f*/0, /* UNKNOWN */
270 /*0x30*/15, /* Uncorrectable ECC */
271 /*0x31*/15, /* Correctable ECC */
272 /*0x32*/15, /* PCI Bus A Error */
273 /*0x33*/15, /* PCI Bus B Error */
274 /*0x34*/15, /* Safari Bus Error */
275 /*0x35*/0, /* Reserved */
276 /*0x36*/0, /* Reserved */
277 /*0x37*/0, /* Reserved */
278 /*0x38*/0, /* Reserved for NewLink */
279 /*0x39*/0, /* Reserved for NewLink */
280 /*0x3a*/0, /* Reserved for NewLink */
281 /*0x3b*/0, /* Reserved for NewLink */
282 /*0x3c*/0, /* Reserved for NewLink */
283 /*0x3d*/0, /* Reserved for NewLink */
284 /*0x3e*/0, /* Reserved for NewLink */
285 /*0x3f*/0, /* Reserved for NewLink */
288 static int schizo_ino_to_pil(struct pci_dev *pdev, unsigned int ino)
293 pdev->vendor == PCI_VENDOR_ID_SUN &&
294 pdev->device == PCI_DEVICE_ID_SUN_RIO_USB)
297 ret = schizo_pil_table[ino];
298 if (ret == 0 && pdev == NULL) {
300 } else if (ret == 0) {
301 switch ((pdev->class >> 16) & 0xff) {
302 case PCI_BASE_CLASS_STORAGE:
306 case PCI_BASE_CLASS_NETWORK:
310 case PCI_BASE_CLASS_DISPLAY:
314 case PCI_BASE_CLASS_MULTIMEDIA:
315 case PCI_BASE_CLASS_MEMORY:
316 case PCI_BASE_CLASS_BRIDGE:
317 case PCI_BASE_CLASS_SERIAL:
330 static void tomatillo_wsync_handler(struct ino_bucket *bucket, void *_arg1, void *_arg2)
332 unsigned long sync_reg = (unsigned long) _arg2;
333 u64 mask = 1UL << (__irq_ino(__irq(bucket)) & IMAP_INO);
337 schizo_write(sync_reg, mask);
342 val = schizo_read(sync_reg);
347 printk("tomatillo_wsync_handler: DMA won't sync [%lx:%lx]\n",
352 static unsigned char cacheline[64]
353 __attribute__ ((aligned (64)));
355 __asm__ __volatile__("rd %%fprs, %0\n\t"
357 "wr %1, 0x0, %%fprs\n\t"
358 "stda %%f0, [%5] %6\n\t"
359 "wr %0, 0x0, %%fprs\n\t"
361 : "=&r" (mask), "=&r" (val)
362 : "0" (mask), "1" (val),
363 "i" (FPRS_FEF), "r" (&cacheline[0]),
364 "i" (ASI_BLK_COMMIT_P));
368 static unsigned int schizo_irq_build(struct pci_pbm_info *pbm,
369 struct pci_dev *pdev,
372 struct ino_bucket *bucket;
373 unsigned long imap, iclr;
374 unsigned long imap_off, iclr_off;
378 imap_off = schizo_imap_offset(ino);
380 /* Now build the IRQ bucket. */
381 pil = schizo_ino_to_pil(pdev, ino);
383 if (PIL_RESERVED(pil))
386 imap = pbm->pbm_regs + imap_off;
389 iclr_off = schizo_iclr_offset(ino);
390 iclr = pbm->pbm_regs + iclr_off;
393 /* On Schizo, no inofixup occurs. This is because each
394 * INO has it's own IMAP register. On Psycho and Sabre
395 * there is only one IMAP register for each PCI slot even
396 * though four different INOs can be generated by each
399 * But, for JBUS variants (essentially, Tomatillo), we have
400 * to fixup the lowest bit of the interrupt group number.
403 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
405 ign_fixup = (1 << 6);
408 bucket = __bucket(build_irq(pil, ign_fixup, iclr, imap));
409 bucket->flags |= IBF_PCI;
411 if (pdev && pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
412 struct irq_desc *p = bucket->irq_info;
414 p->pre_handler = tomatillo_wsync_handler;
415 p->pre_handler_arg1 = ((pbm->chip_version <= 4) ?
416 (void *) 1 : (void *) 0);
417 p->pre_handler_arg2 = (void *) pbm->sync_reg;
420 return __irq(bucket);
423 /* SCHIZO error handling support. */
424 enum schizo_error_type {
425 UE_ERR, CE_ERR, PCI_ERR, SAFARI_ERR
428 static DEFINE_SPINLOCK(stc_buf_lock);
429 static unsigned long stc_error_buf[128];
430 static unsigned long stc_tag_buf[16];
431 static unsigned long stc_line_buf[16];
433 #define SCHIZO_UE_INO 0x30 /* Uncorrectable ECC error */
434 #define SCHIZO_CE_INO 0x31 /* Correctable ECC error */
435 #define SCHIZO_PCIERR_A_INO 0x32 /* PBM A PCI bus error */
436 #define SCHIZO_PCIERR_B_INO 0x33 /* PBM B PCI bus error */
437 #define SCHIZO_SERR_INO 0x34 /* Safari interface error */
439 struct pci_pbm_info *pbm_for_ino(struct pci_controller_info *p, u32 ino)
442 if (p->pbm_A.ino_bitmap & (1UL << ino))
444 if (p->pbm_B.ino_bitmap & (1UL << ino))
447 printk("PCI%d: No ino_bitmap entry for ino[%x], bitmaps "
448 "PBM_A[%016lx] PBM_B[%016lx]",
451 p->pbm_B.ino_bitmap);
452 printk("PCI%d: Using PBM_A, report this problem immediately.\n",
458 static void schizo_clear_other_err_intr(struct pci_controller_info *p, int irq)
460 struct pci_pbm_info *pbm;
461 struct ino_bucket *bucket;
464 /* Do not clear the interrupt for the other PCI bus.
466 * This "ACK both PBM IRQs" only needs to be performed
467 * for chip-wide error interrupts.
469 if ((irq & IMAP_INO) == SCHIZO_PCIERR_A_INO ||
470 (irq & IMAP_INO) == SCHIZO_PCIERR_B_INO)
473 pbm = pbm_for_ino(p, irq);
474 if (pbm == &p->pbm_A)
479 irq = schizo_irq_build(pbm, NULL,
480 (pbm->portid << 6) | (irq & IMAP_INO));
481 bucket = __bucket(irq);
484 upa_writel(ICLR_IDLE, iclr);
487 #define SCHIZO_STC_ERR 0xb800UL /* --> 0xba00 */
488 #define SCHIZO_STC_TAG 0xba00UL /* --> 0xba80 */
489 #define SCHIZO_STC_LINE 0xbb00UL /* --> 0xbb80 */
491 #define SCHIZO_STCERR_WRITE 0x2UL
492 #define SCHIZO_STCERR_READ 0x1UL
494 #define SCHIZO_STCTAG_PPN 0x3fffffff00000000UL
495 #define SCHIZO_STCTAG_VPN 0x00000000ffffe000UL
496 #define SCHIZO_STCTAG_VALID 0x8000000000000000UL
497 #define SCHIZO_STCTAG_READ 0x4000000000000000UL
499 #define SCHIZO_STCLINE_LINDX 0x0000000007800000UL
500 #define SCHIZO_STCLINE_SPTR 0x000000000007e000UL
501 #define SCHIZO_STCLINE_LADDR 0x0000000000001fc0UL
502 #define SCHIZO_STCLINE_EPTR 0x000000000000003fUL
503 #define SCHIZO_STCLINE_VALID 0x0000000000600000UL
504 #define SCHIZO_STCLINE_FOFN 0x0000000000180000UL
506 static void __schizo_check_stc_error_pbm(struct pci_pbm_info *pbm,
507 enum schizo_error_type type)
509 struct pci_strbuf *strbuf = &pbm->stc;
510 unsigned long regbase = pbm->pbm_regs;
511 unsigned long err_base, tag_base, line_base;
515 err_base = regbase + SCHIZO_STC_ERR;
516 tag_base = regbase + SCHIZO_STC_TAG;
517 line_base = regbase + SCHIZO_STC_LINE;
519 spin_lock(&stc_buf_lock);
521 /* This is __REALLY__ dangerous. When we put the
522 * streaming buffer into diagnostic mode to probe
523 * it's tags and error status, we _must_ clear all
524 * of the line tag valid bits before re-enabling
525 * the streaming buffer. If any dirty data lives
526 * in the STC when we do this, we will end up
527 * invalidating it before it has a chance to reach
530 control = schizo_read(strbuf->strbuf_control);
531 schizo_write(strbuf->strbuf_control,
532 (control | SCHIZO_STRBUF_CTRL_DENAB));
533 for (i = 0; i < 128; i++) {
536 val = schizo_read(err_base + (i * 8UL));
537 schizo_write(err_base + (i * 8UL), 0UL);
538 stc_error_buf[i] = val;
540 for (i = 0; i < 16; i++) {
541 stc_tag_buf[i] = schizo_read(tag_base + (i * 8UL));
542 stc_line_buf[i] = schizo_read(line_base + (i * 8UL));
543 schizo_write(tag_base + (i * 8UL), 0UL);
544 schizo_write(line_base + (i * 8UL), 0UL);
547 /* OK, state is logged, exit diagnostic mode. */
548 schizo_write(strbuf->strbuf_control, control);
550 for (i = 0; i < 16; i++) {
551 int j, saw_error, first, last;
556 for (j = first; j < last; j++) {
557 unsigned long errval = stc_error_buf[j];
560 printk("%s: STC_ERR(%d)[wr(%d)rd(%d)]\n",
563 (errval & SCHIZO_STCERR_WRITE) ? 1 : 0,
564 (errval & SCHIZO_STCERR_READ) ? 1 : 0);
567 if (saw_error != 0) {
568 unsigned long tagval = stc_tag_buf[i];
569 unsigned long lineval = stc_line_buf[i];
570 printk("%s: STC_TAG(%d)[PA(%016lx)VA(%08lx)V(%d)R(%d)]\n",
573 ((tagval & SCHIZO_STCTAG_PPN) >> 19UL),
574 (tagval & SCHIZO_STCTAG_VPN),
575 ((tagval & SCHIZO_STCTAG_VALID) ? 1 : 0),
576 ((tagval & SCHIZO_STCTAG_READ) ? 1 : 0));
578 /* XXX Should spit out per-bank error information... -DaveM */
579 printk("%s: STC_LINE(%d)[LIDX(%lx)SP(%lx)LADDR(%lx)EP(%lx)"
583 ((lineval & SCHIZO_STCLINE_LINDX) >> 23UL),
584 ((lineval & SCHIZO_STCLINE_SPTR) >> 13UL),
585 ((lineval & SCHIZO_STCLINE_LADDR) >> 6UL),
586 ((lineval & SCHIZO_STCLINE_EPTR) >> 0UL),
587 ((lineval & SCHIZO_STCLINE_VALID) ? 1 : 0),
588 ((lineval & SCHIZO_STCLINE_FOFN) ? 1 : 0));
592 spin_unlock(&stc_buf_lock);
595 /* IOMMU is per-PBM in Schizo, so interrogate both for anonymous
596 * controller level errors.
599 #define SCHIZO_IOMMU_TAG 0xa580UL
600 #define SCHIZO_IOMMU_DATA 0xa600UL
602 #define SCHIZO_IOMMU_TAG_CTXT 0x0000001ffe000000UL
603 #define SCHIZO_IOMMU_TAG_ERRSTS 0x0000000001800000UL
604 #define SCHIZO_IOMMU_TAG_ERR 0x0000000000400000UL
605 #define SCHIZO_IOMMU_TAG_WRITE 0x0000000000200000UL
606 #define SCHIZO_IOMMU_TAG_STREAM 0x0000000000100000UL
607 #define SCHIZO_IOMMU_TAG_SIZE 0x0000000000080000UL
608 #define SCHIZO_IOMMU_TAG_VPAGE 0x000000000007ffffUL
610 #define SCHIZO_IOMMU_DATA_VALID 0x0000000100000000UL
611 #define SCHIZO_IOMMU_DATA_CACHE 0x0000000040000000UL
612 #define SCHIZO_IOMMU_DATA_PPAGE 0x000000003fffffffUL
614 static void schizo_check_iommu_error_pbm(struct pci_pbm_info *pbm,
615 enum schizo_error_type type)
617 struct pci_iommu *iommu = pbm->iommu;
618 unsigned long iommu_tag[16];
619 unsigned long iommu_data[16];
624 spin_lock_irqsave(&iommu->lock, flags);
625 control = schizo_read(iommu->iommu_control);
626 if (control & SCHIZO_IOMMU_CTRL_XLTEERR) {
630 /* Clear the error encountered bit. */
631 control &= ~SCHIZO_IOMMU_CTRL_XLTEERR;
632 schizo_write(iommu->iommu_control, control);
634 switch((control & SCHIZO_IOMMU_CTRL_XLTESTAT) >> 25UL) {
636 type_string = "Protection Error";
639 type_string = "Invalid Error";
642 type_string = "TimeOut Error";
646 type_string = "ECC Error";
649 printk("%s: IOMMU Error, type[%s]\n",
650 pbm->name, type_string);
652 /* Put the IOMMU into diagnostic mode and probe
653 * it's TLB for entries with error status.
655 * It is very possible for another DVMA to occur
656 * while we do this probe, and corrupt the system
657 * further. But we are so screwed at this point
658 * that we are likely to crash hard anyways, so
659 * get as much diagnostic information to the
662 schizo_write(iommu->iommu_control,
663 control | SCHIZO_IOMMU_CTRL_DENAB);
665 base = pbm->pbm_regs;
667 for (i = 0; i < 16; i++) {
669 schizo_read(base + SCHIZO_IOMMU_TAG + (i * 8UL));
671 schizo_read(base + SCHIZO_IOMMU_DATA + (i * 8UL));
673 /* Now clear out the entry. */
674 schizo_write(base + SCHIZO_IOMMU_TAG + (i * 8UL), 0);
675 schizo_write(base + SCHIZO_IOMMU_DATA + (i * 8UL), 0);
678 /* Leave diagnostic mode. */
679 schizo_write(iommu->iommu_control, control);
681 for (i = 0; i < 16; i++) {
682 unsigned long tag, data;
685 if (!(tag & SCHIZO_IOMMU_TAG_ERR))
688 data = iommu_data[i];
689 switch((tag & SCHIZO_IOMMU_TAG_ERRSTS) >> 23UL) {
691 type_string = "Protection Error";
694 type_string = "Invalid Error";
697 type_string = "TimeOut Error";
701 type_string = "ECC Error";
704 printk("%s: IOMMU TAG(%d)[error(%s) ctx(%x) wr(%d) str(%d) "
705 "sz(%dK) vpg(%08lx)]\n",
706 pbm->name, i, type_string,
707 (int)((tag & SCHIZO_IOMMU_TAG_CTXT) >> 25UL),
708 ((tag & SCHIZO_IOMMU_TAG_WRITE) ? 1 : 0),
709 ((tag & SCHIZO_IOMMU_TAG_STREAM) ? 1 : 0),
710 ((tag & SCHIZO_IOMMU_TAG_SIZE) ? 64 : 8),
711 (tag & SCHIZO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT);
712 printk("%s: IOMMU DATA(%d)[valid(%d) cache(%d) ppg(%016lx)]\n",
714 ((data & SCHIZO_IOMMU_DATA_VALID) ? 1 : 0),
715 ((data & SCHIZO_IOMMU_DATA_CACHE) ? 1 : 0),
716 (data & SCHIZO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT);
719 if (pbm->stc.strbuf_enabled)
720 __schizo_check_stc_error_pbm(pbm, type);
721 spin_unlock_irqrestore(&iommu->lock, flags);
724 static void schizo_check_iommu_error(struct pci_controller_info *p,
725 enum schizo_error_type type)
727 schizo_check_iommu_error_pbm(&p->pbm_A, type);
728 schizo_check_iommu_error_pbm(&p->pbm_B, type);
731 /* Uncorrectable ECC error status gathering. */
732 #define SCHIZO_UE_AFSR 0x10030UL
733 #define SCHIZO_UE_AFAR 0x10038UL
735 #define SCHIZO_UEAFSR_PPIO 0x8000000000000000UL /* Safari */
736 #define SCHIZO_UEAFSR_PDRD 0x4000000000000000UL /* Safari/Tomatillo */
737 #define SCHIZO_UEAFSR_PDWR 0x2000000000000000UL /* Safari */
738 #define SCHIZO_UEAFSR_SPIO 0x1000000000000000UL /* Safari */
739 #define SCHIZO_UEAFSR_SDMA 0x0800000000000000UL /* Safari/Tomatillo */
740 #define SCHIZO_UEAFSR_ERRPNDG 0x0300000000000000UL /* Safari */
741 #define SCHIZO_UEAFSR_BMSK 0x000003ff00000000UL /* Safari */
742 #define SCHIZO_UEAFSR_QOFF 0x00000000c0000000UL /* Safari/Tomatillo */
743 #define SCHIZO_UEAFSR_AID 0x000000001f000000UL /* Safari/Tomatillo */
744 #define SCHIZO_UEAFSR_PARTIAL 0x0000000000800000UL /* Safari */
745 #define SCHIZO_UEAFSR_OWNEDIN 0x0000000000400000UL /* Safari */
746 #define SCHIZO_UEAFSR_MTAGSYND 0x00000000000f0000UL /* Safari */
747 #define SCHIZO_UEAFSR_MTAG 0x000000000000e000UL /* Safari */
748 #define SCHIZO_UEAFSR_ECCSYND 0x00000000000001ffUL /* Safari */
750 static irqreturn_t schizo_ue_intr(int irq, void *dev_id, struct pt_regs *regs)
752 struct pci_controller_info *p = dev_id;
753 unsigned long afsr_reg = p->pbm_B.controller_regs + SCHIZO_UE_AFSR;
754 unsigned long afar_reg = p->pbm_B.controller_regs + SCHIZO_UE_AFAR;
755 unsigned long afsr, afar, error_bits;
758 /* Latch uncorrectable error status. */
759 afar = schizo_read(afar_reg);
761 /* If either of the error pending bits are set in the
762 * AFSR, the error status is being actively updated by
763 * the hardware and we must re-read to get a clean value.
767 afsr = schizo_read(afsr_reg);
768 } while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);
770 /* Clear the primary/secondary error status bits. */
772 (SCHIZO_UEAFSR_PPIO | SCHIZO_UEAFSR_PDRD | SCHIZO_UEAFSR_PDWR |
773 SCHIZO_UEAFSR_SPIO | SCHIZO_UEAFSR_SDMA);
776 schizo_write(afsr_reg, error_bits);
779 printk("PCI%d: Uncorrectable Error, primary error type[%s]\n",
781 (((error_bits & SCHIZO_UEAFSR_PPIO) ?
783 ((error_bits & SCHIZO_UEAFSR_PDRD) ?
785 ((error_bits & SCHIZO_UEAFSR_PDWR) ?
786 "DMA Write" : "???")))));
787 printk("PCI%d: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n",
789 (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
790 (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
791 (afsr & SCHIZO_UEAFSR_AID) >> 24UL);
792 printk("PCI%d: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n",
794 (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
795 (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
796 (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
797 (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
798 (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);
799 printk("PCI%d: UE AFAR [%016lx]\n", p->index, afar);
800 printk("PCI%d: UE Secondary errors [", p->index);
802 if (afsr & SCHIZO_UEAFSR_SPIO) {
806 if (afsr & SCHIZO_UEAFSR_SDMA) {
814 /* Interrogate IOMMU for error status. */
815 schizo_check_iommu_error(p, UE_ERR);
817 schizo_clear_other_err_intr(p, irq);
822 #define SCHIZO_CE_AFSR 0x10040UL
823 #define SCHIZO_CE_AFAR 0x10048UL
825 #define SCHIZO_CEAFSR_PPIO 0x8000000000000000UL
826 #define SCHIZO_CEAFSR_PDRD 0x4000000000000000UL
827 #define SCHIZO_CEAFSR_PDWR 0x2000000000000000UL
828 #define SCHIZO_CEAFSR_SPIO 0x1000000000000000UL
829 #define SCHIZO_CEAFSR_SDMA 0x0800000000000000UL
830 #define SCHIZO_CEAFSR_ERRPNDG 0x0300000000000000UL
831 #define SCHIZO_CEAFSR_BMSK 0x000003ff00000000UL
832 #define SCHIZO_CEAFSR_QOFF 0x00000000c0000000UL
833 #define SCHIZO_CEAFSR_AID 0x000000001f000000UL
834 #define SCHIZO_CEAFSR_PARTIAL 0x0000000000800000UL
835 #define SCHIZO_CEAFSR_OWNEDIN 0x0000000000400000UL
836 #define SCHIZO_CEAFSR_MTAGSYND 0x00000000000f0000UL
837 #define SCHIZO_CEAFSR_MTAG 0x000000000000e000UL
838 #define SCHIZO_CEAFSR_ECCSYND 0x00000000000001ffUL
840 static irqreturn_t schizo_ce_intr(int irq, void *dev_id, struct pt_regs *regs)
842 struct pci_controller_info *p = dev_id;
843 unsigned long afsr_reg = p->pbm_B.controller_regs + SCHIZO_CE_AFSR;
844 unsigned long afar_reg = p->pbm_B.controller_regs + SCHIZO_CE_AFAR;
845 unsigned long afsr, afar, error_bits;
848 /* Latch error status. */
849 afar = schizo_read(afar_reg);
851 /* If either of the error pending bits are set in the
852 * AFSR, the error status is being actively updated by
853 * the hardware and we must re-read to get a clean value.
857 afsr = schizo_read(afsr_reg);
858 } while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);
860 /* Clear primary/secondary error status bits. */
862 (SCHIZO_CEAFSR_PPIO | SCHIZO_CEAFSR_PDRD | SCHIZO_CEAFSR_PDWR |
863 SCHIZO_CEAFSR_SPIO | SCHIZO_CEAFSR_SDMA);
866 schizo_write(afsr_reg, error_bits);
869 printk("PCI%d: Correctable Error, primary error type[%s]\n",
871 (((error_bits & SCHIZO_CEAFSR_PPIO) ?
873 ((error_bits & SCHIZO_CEAFSR_PDRD) ?
875 ((error_bits & SCHIZO_CEAFSR_PDWR) ?
876 "DMA Write" : "???")))));
878 /* XXX Use syndrome and afar to print out module string just like
879 * XXX UDB CE trap handler does... -DaveM
881 printk("PCI%d: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n",
883 (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
884 (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
885 (afsr & SCHIZO_UEAFSR_AID) >> 24UL);
886 printk("PCI%d: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n",
888 (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
889 (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
890 (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
891 (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
892 (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);
893 printk("PCI%d: CE AFAR [%016lx]\n", p->index, afar);
894 printk("PCI%d: CE Secondary errors [", p->index);
896 if (afsr & SCHIZO_CEAFSR_SPIO) {
900 if (afsr & SCHIZO_CEAFSR_SDMA) {
908 schizo_clear_other_err_intr(p, irq);
913 #define SCHIZO_PCI_AFSR 0x2010UL
914 #define SCHIZO_PCI_AFAR 0x2018UL
916 #define SCHIZO_PCIAFSR_PMA 0x8000000000000000UL /* Schizo/Tomatillo */
917 #define SCHIZO_PCIAFSR_PTA 0x4000000000000000UL /* Schizo/Tomatillo */
918 #define SCHIZO_PCIAFSR_PRTRY 0x2000000000000000UL /* Schizo/Tomatillo */
919 #define SCHIZO_PCIAFSR_PPERR 0x1000000000000000UL /* Schizo/Tomatillo */
920 #define SCHIZO_PCIAFSR_PTTO 0x0800000000000000UL /* Schizo/Tomatillo */
921 #define SCHIZO_PCIAFSR_PUNUS 0x0400000000000000UL /* Schizo */
922 #define SCHIZO_PCIAFSR_SMA 0x0200000000000000UL /* Schizo/Tomatillo */
923 #define SCHIZO_PCIAFSR_STA 0x0100000000000000UL /* Schizo/Tomatillo */
924 #define SCHIZO_PCIAFSR_SRTRY 0x0080000000000000UL /* Schizo/Tomatillo */
925 #define SCHIZO_PCIAFSR_SPERR 0x0040000000000000UL /* Schizo/Tomatillo */
926 #define SCHIZO_PCIAFSR_STTO 0x0020000000000000UL /* Schizo/Tomatillo */
927 #define SCHIZO_PCIAFSR_SUNUS 0x0010000000000000UL /* Schizo */
928 #define SCHIZO_PCIAFSR_BMSK 0x000003ff00000000UL /* Schizo/Tomatillo */
929 #define SCHIZO_PCIAFSR_BLK 0x0000000080000000UL /* Schizo/Tomatillo */
930 #define SCHIZO_PCIAFSR_CFG 0x0000000040000000UL /* Schizo/Tomatillo */
931 #define SCHIZO_PCIAFSR_MEM 0x0000000020000000UL /* Schizo/Tomatillo */
932 #define SCHIZO_PCIAFSR_IO 0x0000000010000000UL /* Schizo/Tomatillo */
934 #define SCHIZO_PCI_CTRL (0x2000UL)
935 #define SCHIZO_PCICTRL_BUS_UNUS (1UL << 63UL) /* Safari */
936 #define SCHIZO_PCICTRL_DTO_INT (1UL << 61UL) /* Tomatillo */
937 #define SCHIZO_PCICTRL_ARB_PRIO (0x1ff << 52UL) /* Tomatillo */
938 #define SCHIZO_PCICTRL_ESLCK (1UL << 51UL) /* Safari */
939 #define SCHIZO_PCICTRL_ERRSLOT (7UL << 48UL) /* Safari */
940 #define SCHIZO_PCICTRL_TTO_ERR (1UL << 38UL) /* Safari/Tomatillo */
941 #define SCHIZO_PCICTRL_RTRY_ERR (1UL << 37UL) /* Safari/Tomatillo */
942 #define SCHIZO_PCICTRL_DTO_ERR (1UL << 36UL) /* Safari/Tomatillo */
943 #define SCHIZO_PCICTRL_SBH_ERR (1UL << 35UL) /* Safari */
944 #define SCHIZO_PCICTRL_SERR (1UL << 34UL) /* Safari/Tomatillo */
945 #define SCHIZO_PCICTRL_PCISPD (1UL << 33UL) /* Safari */
946 #define SCHIZO_PCICTRL_MRM_PREF (1UL << 30UL) /* Tomatillo */
947 #define SCHIZO_PCICTRL_RDO_PREF (1UL << 29UL) /* Tomatillo */
948 #define SCHIZO_PCICTRL_RDL_PREF (1UL << 28UL) /* Tomatillo */
949 #define SCHIZO_PCICTRL_PTO (3UL << 24UL) /* Safari/Tomatillo */
950 #define SCHIZO_PCICTRL_PTO_SHIFT 24UL
951 #define SCHIZO_PCICTRL_TRWSW (7UL << 21UL) /* Tomatillo */
952 #define SCHIZO_PCICTRL_F_TGT_A (1UL << 20UL) /* Tomatillo */
953 #define SCHIZO_PCICTRL_S_DTO_INT (1UL << 19UL) /* Safari */
954 #define SCHIZO_PCICTRL_F_TGT_RT (1UL << 19UL) /* Tomatillo */
955 #define SCHIZO_PCICTRL_SBH_INT (1UL << 18UL) /* Safari */
956 #define SCHIZO_PCICTRL_T_DTO_INT (1UL << 18UL) /* Tomatillo */
957 #define SCHIZO_PCICTRL_EEN (1UL << 17UL) /* Safari/Tomatillo */
958 #define SCHIZO_PCICTRL_PARK (1UL << 16UL) /* Safari/Tomatillo */
959 #define SCHIZO_PCICTRL_PCIRST (1UL << 8UL) /* Safari */
960 #define SCHIZO_PCICTRL_ARB_S (0x3fUL << 0UL) /* Safari */
961 #define SCHIZO_PCICTRL_ARB_T (0xffUL << 0UL) /* Tomatillo */
963 static irqreturn_t schizo_pcierr_intr_other(struct pci_pbm_info *pbm)
965 unsigned long csr_reg, csr, csr_error_bits;
966 irqreturn_t ret = IRQ_NONE;
969 csr_reg = pbm->pbm_regs + SCHIZO_PCI_CTRL;
970 csr = schizo_read(csr_reg);
972 csr & (SCHIZO_PCICTRL_BUS_UNUS |
973 SCHIZO_PCICTRL_TTO_ERR |
974 SCHIZO_PCICTRL_RTRY_ERR |
975 SCHIZO_PCICTRL_DTO_ERR |
976 SCHIZO_PCICTRL_SBH_ERR |
977 SCHIZO_PCICTRL_SERR);
978 if (csr_error_bits) {
979 /* Clear the errors. */
980 schizo_write(csr_reg, csr);
983 if (csr_error_bits & SCHIZO_PCICTRL_BUS_UNUS)
984 printk("%s: Bus unusable error asserted.\n",
986 if (csr_error_bits & SCHIZO_PCICTRL_TTO_ERR)
987 printk("%s: PCI TRDY# timeout error asserted.\n",
989 if (csr_error_bits & SCHIZO_PCICTRL_RTRY_ERR)
990 printk("%s: PCI excessive retry error asserted.\n",
992 if (csr_error_bits & SCHIZO_PCICTRL_DTO_ERR)
993 printk("%s: PCI discard timeout error asserted.\n",
995 if (csr_error_bits & SCHIZO_PCICTRL_SBH_ERR)
996 printk("%s: PCI streaming byte hole error asserted.\n",
998 if (csr_error_bits & SCHIZO_PCICTRL_SERR)
999 printk("%s: PCI SERR signal asserted.\n",
1003 pci_read_config_word(pbm->pci_bus->self, PCI_STATUS, &stat);
1004 if (stat & (PCI_STATUS_PARITY |
1005 PCI_STATUS_SIG_TARGET_ABORT |
1006 PCI_STATUS_REC_TARGET_ABORT |
1007 PCI_STATUS_REC_MASTER_ABORT |
1008 PCI_STATUS_SIG_SYSTEM_ERROR)) {
1009 printk("%s: PCI bus error, PCI_STATUS[%04x]\n",
1011 pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff);
1017 static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id, struct pt_regs *regs)
1019 struct pci_pbm_info *pbm = dev_id;
1020 struct pci_controller_info *p = pbm->parent;
1021 unsigned long afsr_reg, afar_reg, base;
1022 unsigned long afsr, afar, error_bits;
1025 base = pbm->pbm_regs;
1027 afsr_reg = base + SCHIZO_PCI_AFSR;
1028 afar_reg = base + SCHIZO_PCI_AFAR;
1030 /* Latch error status. */
1031 afar = schizo_read(afar_reg);
1032 afsr = schizo_read(afsr_reg);
1034 /* Clear primary/secondary error status bits. */
1036 (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
1037 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
1038 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
1039 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
1040 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
1041 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS);
1043 return schizo_pcierr_intr_other(pbm);
1044 schizo_write(afsr_reg, error_bits);
1046 /* Log the error. */
1047 printk("%s: PCI Error, primary error type[%s]\n",
1049 (((error_bits & SCHIZO_PCIAFSR_PMA) ?
1051 ((error_bits & SCHIZO_PCIAFSR_PTA) ?
1053 ((error_bits & SCHIZO_PCIAFSR_PRTRY) ?
1054 "Excessive Retries" :
1055 ((error_bits & SCHIZO_PCIAFSR_PPERR) ?
1057 ((error_bits & SCHIZO_PCIAFSR_PTTO) ?
1059 ((error_bits & SCHIZO_PCIAFSR_PUNUS) ?
1060 "Bus Unusable" : "???"))))))));
1061 printk("%s: bytemask[%04lx] was_block(%d) space(%s)\n",
1063 (afsr & SCHIZO_PCIAFSR_BMSK) >> 32UL,
1064 (afsr & SCHIZO_PCIAFSR_BLK) ? 1 : 0,
1065 ((afsr & SCHIZO_PCIAFSR_CFG) ?
1067 ((afsr & SCHIZO_PCIAFSR_MEM) ?
1069 ((afsr & SCHIZO_PCIAFSR_IO) ?
1071 printk("%s: PCI AFAR [%016lx]\n",
1073 printk("%s: PCI Secondary errors [",
1076 if (afsr & SCHIZO_PCIAFSR_SMA) {
1078 printk("(Master Abort)");
1080 if (afsr & SCHIZO_PCIAFSR_STA) {
1082 printk("(Target Abort)");
1084 if (afsr & SCHIZO_PCIAFSR_SRTRY) {
1086 printk("(Excessive Retries)");
1088 if (afsr & SCHIZO_PCIAFSR_SPERR) {
1090 printk("(Parity Error)");
1092 if (afsr & SCHIZO_PCIAFSR_STTO) {
1094 printk("(Timeout)");
1096 if (afsr & SCHIZO_PCIAFSR_SUNUS) {
1098 printk("(Bus Unusable)");
1104 /* For the error types shown, scan PBM's PCI bus for devices
1105 * which have logged that error type.
1108 /* If we see a Target Abort, this could be the result of an
1109 * IOMMU translation error of some sort. It is extremely
1110 * useful to log this information as usually it indicates
1111 * a bug in the IOMMU support code or a PCI device driver.
1113 if (error_bits & (SCHIZO_PCIAFSR_PTA | SCHIZO_PCIAFSR_STA)) {
1114 schizo_check_iommu_error(p, PCI_ERR);
1115 pci_scan_for_target_abort(p, pbm, pbm->pci_bus);
1117 if (error_bits & (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_SMA))
1118 pci_scan_for_master_abort(p, pbm, pbm->pci_bus);
1120 /* For excessive retries, PSYCHO/PBM will abort the device
1121 * and there is no way to specifically check for excessive
1122 * retries in the config space status registers. So what
1123 * we hope is that we'll catch it via the master/target
1127 if (error_bits & (SCHIZO_PCIAFSR_PPERR | SCHIZO_PCIAFSR_SPERR))
1128 pci_scan_for_parity_error(p, pbm, pbm->pci_bus);
1130 schizo_clear_other_err_intr(p, irq);
1135 #define SCHIZO_SAFARI_ERRLOG 0x10018UL
1137 #define SAFARI_ERRLOG_ERROUT 0x8000000000000000UL
1139 #define BUS_ERROR_BADCMD 0x4000000000000000UL /* Schizo/Tomatillo */
1140 #define BUS_ERROR_SSMDIS 0x2000000000000000UL /* Safari */
1141 #define BUS_ERROR_BADMA 0x1000000000000000UL /* Safari */
1142 #define BUS_ERROR_BADMB 0x0800000000000000UL /* Safari */
1143 #define BUS_ERROR_BADMC 0x0400000000000000UL /* Safari */
1144 #define BUS_ERROR_SNOOP_GR 0x0000000000200000UL /* Tomatillo */
1145 #define BUS_ERROR_SNOOP_PCI 0x0000000000100000UL /* Tomatillo */
1146 #define BUS_ERROR_SNOOP_RD 0x0000000000080000UL /* Tomatillo */
1147 #define BUS_ERROR_SNOOP_RDS 0x0000000000020000UL /* Tomatillo */
1148 #define BUS_ERROR_SNOOP_RDSA 0x0000000000010000UL /* Tomatillo */
1149 #define BUS_ERROR_SNOOP_OWN 0x0000000000008000UL /* Tomatillo */
1150 #define BUS_ERROR_SNOOP_RDO 0x0000000000004000UL /* Tomatillo */
1151 #define BUS_ERROR_CPU1PS 0x0000000000002000UL /* Safari */
1152 #define BUS_ERROR_WDATA_PERR 0x0000000000002000UL /* Tomatillo */
1153 #define BUS_ERROR_CPU1PB 0x0000000000001000UL /* Safari */
1154 #define BUS_ERROR_CTRL_PERR 0x0000000000001000UL /* Tomatillo */
1155 #define BUS_ERROR_CPU0PS 0x0000000000000800UL /* Safari */
1156 #define BUS_ERROR_SNOOP_ERR 0x0000000000000800UL /* Tomatillo */
1157 #define BUS_ERROR_CPU0PB 0x0000000000000400UL /* Safari */
1158 #define BUS_ERROR_JBUS_ILL_B 0x0000000000000400UL /* Tomatillo */
1159 #define BUS_ERROR_CIQTO 0x0000000000000200UL /* Safari */
1160 #define BUS_ERROR_LPQTO 0x0000000000000100UL /* Safari */
1161 #define BUS_ERROR_JBUS_ILL_C 0x0000000000000100UL /* Tomatillo */
1162 #define BUS_ERROR_SFPQTO 0x0000000000000080UL /* Safari */
1163 #define BUS_ERROR_UFPQTO 0x0000000000000040UL /* Safari */
1164 #define BUS_ERROR_RD_PERR 0x0000000000000040UL /* Tomatillo */
1165 #define BUS_ERROR_APERR 0x0000000000000020UL /* Safari/Tomatillo */
1166 #define BUS_ERROR_UNMAP 0x0000000000000010UL /* Safari/Tomatillo */
1167 #define BUS_ERROR_BUSERR 0x0000000000000004UL /* Safari/Tomatillo */
1168 #define BUS_ERROR_TIMEOUT 0x0000000000000002UL /* Safari/Tomatillo */
1169 #define BUS_ERROR_ILL 0x0000000000000001UL /* Safari */
1171 /* We only expect UNMAP errors here. The rest of the Safari errors
1172 * are marked fatal and thus cause a system reset.
1174 static irqreturn_t schizo_safarierr_intr(int irq, void *dev_id, struct pt_regs *regs)
1176 struct pci_controller_info *p = dev_id;
1179 errlog = schizo_read(p->pbm_B.controller_regs + SCHIZO_SAFARI_ERRLOG);
1180 schizo_write(p->pbm_B.controller_regs + SCHIZO_SAFARI_ERRLOG,
1181 errlog & ~(SAFARI_ERRLOG_ERROUT));
1183 if (!(errlog & BUS_ERROR_UNMAP)) {
1184 printk("PCI%d: Unexpected Safari/JBUS error interrupt, errlog[%016lx]\n",
1187 schizo_clear_other_err_intr(p, irq);
1191 printk("PCI%d: Safari/JBUS interrupt, UNMAPPED error, interrogating IOMMUs.\n",
1193 schizo_check_iommu_error(p, SAFARI_ERR);
1195 schizo_clear_other_err_intr(p, irq);
1199 /* Nearly identical to PSYCHO equivalents... */
1200 #define SCHIZO_ECC_CTRL 0x10020UL
1201 #define SCHIZO_ECCCTRL_EE 0x8000000000000000UL /* Enable ECC Checking */
1202 #define SCHIZO_ECCCTRL_UE 0x4000000000000000UL /* Enable UE Interrupts */
1203 #define SCHIZO_ECCCTRL_CE 0x2000000000000000UL /* Enable CE INterrupts */
1205 #define SCHIZO_SAFARI_ERRCTRL 0x10008UL
1206 #define SCHIZO_SAFERRCTRL_EN 0x8000000000000000UL
1207 #define SCHIZO_SAFARI_IRQCTRL 0x10010UL
1208 #define SCHIZO_SAFIRQCTRL_EN 0x8000000000000000UL
1210 /* How the Tomatillo IRQs are routed around is pure guesswork here.
1212 * All the Tomatillo devices I see in prtconf dumps seem to have only
1213 * a single PCI bus unit attached to it. It would seem they are seperate
1214 * devices because their PortID (ie. JBUS ID) values are all different
1215 * and thus the registers are mapped to totally different locations.
1217 * However, two Tomatillo's look "similar" in that the only difference
1218 * in their PortID is the lowest bit.
1220 * So if we were to ignore this lower bit, it certainly looks like two
1221 * PCI bus units of the same Tomatillo. I still have not really
1222 * figured this out...
1224 static void tomatillo_register_error_handlers(struct pci_controller_info *p)
1226 struct pci_pbm_info *pbm;
1228 struct ino_bucket *bucket;
1229 u64 tmp, err_mask, err_no_mask;
1231 /* Build IRQs and register handlers. */
1232 pbm = pbm_for_ino(p, SCHIZO_UE_INO);
1233 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_UE_INO);
1234 if (request_irq(irq, schizo_ue_intr,
1235 SA_SHIRQ, "TOMATILLO UE", p) < 0) {
1236 prom_printf("%s: Cannot register UE interrupt.\n",
1240 bucket = __bucket(irq);
1241 tmp = upa_readl(bucket->imap);
1242 upa_writel(tmp, (pbm->pbm_regs +
1243 schizo_imap_offset(SCHIZO_UE_INO) + 4));
1245 pbm = pbm_for_ino(p, SCHIZO_CE_INO);
1246 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_CE_INO);
1247 if (request_irq(irq, schizo_ce_intr,
1248 SA_SHIRQ, "TOMATILLO CE", p) < 0) {
1249 prom_printf("%s: Cannot register CE interrupt.\n",
1253 bucket = __bucket(irq);
1254 tmp = upa_readl(bucket->imap);
1255 upa_writel(tmp, (pbm->pbm_regs +
1256 schizo_imap_offset(SCHIZO_CE_INO) + 4));
1258 pbm = pbm_for_ino(p, SCHIZO_PCIERR_A_INO);
1259 irq = schizo_irq_build(pbm, NULL, ((pbm->portid << 6) |
1260 SCHIZO_PCIERR_A_INO));
1261 if (request_irq(irq, schizo_pcierr_intr,
1262 SA_SHIRQ, "TOMATILLO PCIERR", pbm) < 0) {
1263 prom_printf("%s: Cannot register PBM A PciERR interrupt.\n",
1267 bucket = __bucket(irq);
1268 tmp = upa_readl(bucket->imap);
1269 upa_writel(tmp, (pbm->pbm_regs +
1270 schizo_imap_offset(SCHIZO_PCIERR_A_INO) + 4));
1272 pbm = pbm_for_ino(p, SCHIZO_PCIERR_B_INO);
1273 irq = schizo_irq_build(pbm, NULL, ((pbm->portid << 6) |
1274 SCHIZO_PCIERR_B_INO));
1275 if (request_irq(irq, schizo_pcierr_intr,
1276 SA_SHIRQ, "TOMATILLO PCIERR", pbm) < 0) {
1277 prom_printf("%s: Cannot register PBM B PciERR interrupt.\n",
1281 bucket = __bucket(irq);
1282 tmp = upa_readl(bucket->imap);
1283 upa_writel(tmp, (pbm->pbm_regs +
1284 schizo_imap_offset(SCHIZO_PCIERR_B_INO) + 4));
1286 pbm = pbm_for_ino(p, SCHIZO_SERR_INO);
1287 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_SERR_INO);
1288 if (request_irq(irq, schizo_safarierr_intr,
1289 SA_SHIRQ, "TOMATILLO SERR", p) < 0) {
1290 prom_printf("%s: Cannot register SafariERR interrupt.\n",
1294 bucket = __bucket(irq);
1295 tmp = upa_readl(bucket->imap);
1296 upa_writel(tmp, (pbm->pbm_regs +
1297 schizo_imap_offset(SCHIZO_SERR_INO) + 4));
1299 /* Enable UE and CE interrupts for controller. */
1300 schizo_write(p->pbm_A.controller_regs + SCHIZO_ECC_CTRL,
1301 (SCHIZO_ECCCTRL_EE |
1303 SCHIZO_ECCCTRL_CE));
1305 schizo_write(p->pbm_B.controller_regs + SCHIZO_ECC_CTRL,
1306 (SCHIZO_ECCCTRL_EE |
1308 SCHIZO_ECCCTRL_CE));
1310 /* Enable PCI Error interrupts and clear error
1313 err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
1314 SCHIZO_PCICTRL_TTO_ERR |
1315 SCHIZO_PCICTRL_RTRY_ERR |
1316 SCHIZO_PCICTRL_SERR |
1317 SCHIZO_PCICTRL_EEN);
1319 err_no_mask = SCHIZO_PCICTRL_DTO_ERR;
1321 tmp = schizo_read(p->pbm_A.pbm_regs + SCHIZO_PCI_CTRL);
1323 tmp &= ~err_no_mask;
1324 schizo_write(p->pbm_A.pbm_regs + SCHIZO_PCI_CTRL, tmp);
1326 tmp = schizo_read(p->pbm_B.pbm_regs + SCHIZO_PCI_CTRL);
1328 tmp &= ~err_no_mask;
1329 schizo_write(p->pbm_B.pbm_regs + SCHIZO_PCI_CTRL, tmp);
1331 err_mask = (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
1332 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
1333 SCHIZO_PCIAFSR_PTTO |
1334 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
1335 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
1336 SCHIZO_PCIAFSR_STTO);
1338 schizo_write(p->pbm_A.pbm_regs + SCHIZO_PCI_AFSR, err_mask);
1339 schizo_write(p->pbm_B.pbm_regs + SCHIZO_PCI_AFSR, err_mask);
1341 err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SNOOP_GR |
1342 BUS_ERROR_SNOOP_PCI | BUS_ERROR_SNOOP_RD |
1343 BUS_ERROR_SNOOP_RDS | BUS_ERROR_SNOOP_RDSA |
1344 BUS_ERROR_SNOOP_OWN | BUS_ERROR_SNOOP_RDO |
1345 BUS_ERROR_WDATA_PERR | BUS_ERROR_CTRL_PERR |
1346 BUS_ERROR_SNOOP_ERR | BUS_ERROR_JBUS_ILL_B |
1347 BUS_ERROR_JBUS_ILL_C | BUS_ERROR_RD_PERR |
1348 BUS_ERROR_APERR | BUS_ERROR_UNMAP |
1349 BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT);
1351 schizo_write(p->pbm_A.controller_regs + SCHIZO_SAFARI_ERRCTRL,
1352 (SCHIZO_SAFERRCTRL_EN | err_mask));
1353 schizo_write(p->pbm_B.controller_regs + SCHIZO_SAFARI_ERRCTRL,
1354 (SCHIZO_SAFERRCTRL_EN | err_mask));
1356 schizo_write(p->pbm_A.controller_regs + SCHIZO_SAFARI_IRQCTRL,
1357 (SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP)));
1358 schizo_write(p->pbm_B.controller_regs + SCHIZO_SAFARI_IRQCTRL,
1359 (SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP)));
1362 static void schizo_register_error_handlers(struct pci_controller_info *p)
1364 struct pci_pbm_info *pbm;
1366 struct ino_bucket *bucket;
1367 u64 tmp, err_mask, err_no_mask;
1369 /* Build IRQs and register handlers. */
1370 pbm = pbm_for_ino(p, SCHIZO_UE_INO);
1371 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_UE_INO);
1372 if (request_irq(irq, schizo_ue_intr,
1373 SA_SHIRQ, "SCHIZO UE", p) < 0) {
1374 prom_printf("%s: Cannot register UE interrupt.\n",
1378 bucket = __bucket(irq);
1379 tmp = upa_readl(bucket->imap);
1380 upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_UE_INO) + 4));
1382 pbm = pbm_for_ino(p, SCHIZO_CE_INO);
1383 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_CE_INO);
1384 if (request_irq(irq, schizo_ce_intr,
1385 SA_SHIRQ, "SCHIZO CE", p) < 0) {
1386 prom_printf("%s: Cannot register CE interrupt.\n",
1390 bucket = __bucket(irq);
1391 tmp = upa_readl(bucket->imap);
1392 upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_CE_INO) + 4));
1394 pbm = pbm_for_ino(p, SCHIZO_PCIERR_A_INO);
1395 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_PCIERR_A_INO);
1396 if (request_irq(irq, schizo_pcierr_intr,
1397 SA_SHIRQ, "SCHIZO PCIERR", pbm) < 0) {
1398 prom_printf("%s: Cannot register PBM A PciERR interrupt.\n",
1402 bucket = __bucket(irq);
1403 tmp = upa_readl(bucket->imap);
1404 upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_PCIERR_A_INO) + 4));
1406 pbm = pbm_for_ino(p, SCHIZO_PCIERR_B_INO);
1407 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_PCIERR_B_INO);
1408 if (request_irq(irq, schizo_pcierr_intr,
1409 SA_SHIRQ, "SCHIZO PCIERR", &p->pbm_B) < 0) {
1410 prom_printf("%s: Cannot register PBM B PciERR interrupt.\n",
1414 bucket = __bucket(irq);
1415 tmp = upa_readl(bucket->imap);
1416 upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_PCIERR_B_INO) + 4));
1418 pbm = pbm_for_ino(p, SCHIZO_SERR_INO);
1419 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_SERR_INO);
1420 if (request_irq(irq, schizo_safarierr_intr,
1421 SA_SHIRQ, "SCHIZO SERR", p) < 0) {
1422 prom_printf("%s: Cannot register SafariERR interrupt.\n",
1426 bucket = __bucket(irq);
1427 tmp = upa_readl(bucket->imap);
1428 upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_SERR_INO) + 4));
1430 /* Enable UE and CE interrupts for controller. */
1431 schizo_write(p->pbm_A.controller_regs + SCHIZO_ECC_CTRL,
1432 (SCHIZO_ECCCTRL_EE |
1434 SCHIZO_ECCCTRL_CE));
1436 err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
1437 SCHIZO_PCICTRL_ESLCK |
1438 SCHIZO_PCICTRL_TTO_ERR |
1439 SCHIZO_PCICTRL_RTRY_ERR |
1440 SCHIZO_PCICTRL_SBH_ERR |
1441 SCHIZO_PCICTRL_SERR |
1442 SCHIZO_PCICTRL_EEN);
1444 err_no_mask = (SCHIZO_PCICTRL_DTO_ERR |
1445 SCHIZO_PCICTRL_SBH_INT);
1447 /* Enable PCI Error interrupts and clear error
1448 * bits for each PBM.
1450 tmp = schizo_read(p->pbm_A.pbm_regs + SCHIZO_PCI_CTRL);
1452 tmp &= ~err_no_mask;
1453 schizo_write(p->pbm_A.pbm_regs + SCHIZO_PCI_CTRL, tmp);
1455 schizo_write(p->pbm_A.pbm_regs + SCHIZO_PCI_AFSR,
1456 (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
1457 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
1458 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
1459 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
1460 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
1461 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS));
1463 tmp = schizo_read(p->pbm_B.pbm_regs + SCHIZO_PCI_CTRL);
1465 tmp &= ~err_no_mask;
1466 schizo_write(p->pbm_B.pbm_regs + SCHIZO_PCI_CTRL, tmp);
1468 schizo_write(p->pbm_B.pbm_regs + SCHIZO_PCI_AFSR,
1469 (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
1470 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
1471 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
1472 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
1473 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
1474 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS));
1476 /* Make all Safari error conditions fatal except unmapped
1477 * errors which we make generate interrupts.
1479 err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SSMDIS |
1480 BUS_ERROR_BADMA | BUS_ERROR_BADMB |
1482 BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
1483 BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB |
1485 BUS_ERROR_LPQTO | BUS_ERROR_SFPQTO |
1486 BUS_ERROR_UFPQTO | BUS_ERROR_APERR |
1487 BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT |
1490 /* XXX Something wrong with some Excalibur systems
1491 * XXX Sun is shipping. The behavior on a 2-cpu
1492 * XXX machine is that both CPU1 parity error bits
1493 * XXX are set and are immediately set again when
1494 * XXX their error status bits are cleared. Just
1495 * XXX ignore them for now. -DaveM
1497 err_mask &= ~(BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
1498 BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB);
1501 schizo_write(p->pbm_A.controller_regs + SCHIZO_SAFARI_ERRCTRL,
1502 (SCHIZO_SAFERRCTRL_EN | err_mask));
1504 schizo_write(p->pbm_A.controller_regs + SCHIZO_SAFARI_IRQCTRL,
1505 (SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP)));
1508 static void pbm_config_busmastering(struct pci_pbm_info *pbm)
1512 /* Set cache-line size to 64 bytes, this is actually
1513 * a nop but I do it for completeness.
1515 addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
1516 0, PCI_CACHE_LINE_SIZE);
1517 pci_config_write8(addr, 64 / sizeof(u32));
1519 /* Set PBM latency timer to 64 PCI clocks. */
1520 addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
1521 0, PCI_LATENCY_TIMER);
1522 pci_config_write8(addr, 64);
1525 static void pbm_scan_bus(struct pci_controller_info *p,
1526 struct pci_pbm_info *pbm)
1528 struct pcidev_cookie *cookie = kmalloc(sizeof(*cookie), GFP_KERNEL);
1531 prom_printf("%s: Critical allocation failure.\n", pbm->name);
1535 /* All we care about is the PBM. */
1536 memset(cookie, 0, sizeof(*cookie));
1539 pbm->pci_bus = pci_scan_bus(pbm->pci_first_busno,
1542 pci_fixup_host_bridge_self(pbm->pci_bus);
1543 pbm->pci_bus->self->sysdata = cookie;
1545 pci_fill_in_pbm_cookies(pbm->pci_bus, pbm, pbm->prom_node);
1546 pci_record_assignments(pbm, pbm->pci_bus);
1547 pci_assign_unassigned(pbm, pbm->pci_bus);
1548 pci_fixup_irq(pbm, pbm->pci_bus);
1549 pci_determine_66mhz_disposition(pbm, pbm->pci_bus);
1550 pci_setup_busmastering(pbm, pbm->pci_bus);
1553 static void __schizo_scan_bus(struct pci_controller_info *p,
1556 if (!p->pbm_B.prom_node || !p->pbm_A.prom_node) {
1557 printk("PCI: Only one PCI bus module of controller found.\n");
1558 printk("PCI: Ignoring entire controller.\n");
1562 pbm_config_busmastering(&p->pbm_B);
1563 p->pbm_B.is_66mhz_capable =
1564 prom_getbool(p->pbm_B.prom_node, "66mhz-capable");
1565 pbm_config_busmastering(&p->pbm_A);
1566 p->pbm_A.is_66mhz_capable =
1567 prom_getbool(p->pbm_A.prom_node, "66mhz-capable");
1568 pbm_scan_bus(p, &p->pbm_B);
1569 pbm_scan_bus(p, &p->pbm_A);
1571 /* After the PCI bus scan is complete, we can register
1572 * the error interrupt handlers.
1574 if (chip_type == PBM_CHIP_TYPE_TOMATILLO)
1575 tomatillo_register_error_handlers(p);
1577 schizo_register_error_handlers(p);
1580 static void schizo_scan_bus(struct pci_controller_info *p)
1582 __schizo_scan_bus(p, PBM_CHIP_TYPE_SCHIZO);
1585 static void tomatillo_scan_bus(struct pci_controller_info *p)
1587 __schizo_scan_bus(p, PBM_CHIP_TYPE_TOMATILLO);
1590 static void schizo_base_address_update(struct pci_dev *pdev, int resource)
1592 struct pcidev_cookie *pcp = pdev->sysdata;
1593 struct pci_pbm_info *pbm = pcp->pbm;
1594 struct resource *res, *root;
1596 int where, size, is_64bit;
1598 res = &pdev->resource[resource];
1600 where = PCI_BASE_ADDRESS_0 + (resource * 4);
1601 } else if (resource == PCI_ROM_RESOURCE) {
1602 where = pdev->rom_base_reg;
1604 /* Somebody might have asked allocation of a non-standard resource */
1609 if (res->flags & IORESOURCE_IO)
1610 root = &pbm->io_space;
1612 root = &pbm->mem_space;
1613 if ((res->flags & PCI_BASE_ADDRESS_MEM_TYPE_MASK)
1614 == PCI_BASE_ADDRESS_MEM_TYPE_64)
1618 size = res->end - res->start;
1619 pci_read_config_dword(pdev, where, ®);
1620 reg = ((reg & size) |
1621 (((u32)(res->start - root->start)) & ~size));
1622 if (resource == PCI_ROM_RESOURCE) {
1623 reg |= PCI_ROM_ADDRESS_ENABLE;
1624 res->flags |= IORESOURCE_ROM_ENABLE;
1626 pci_write_config_dword(pdev, where, reg);
1628 /* This knows that the upper 32-bits of the address
1629 * must be zero. Our PCI common layer enforces this.
1632 pci_write_config_dword(pdev, where + 4, 0);
1635 static void schizo_resource_adjust(struct pci_dev *pdev,
1636 struct resource *res,
1637 struct resource *root)
1639 res->start += root->start;
1640 res->end += root->start;
1643 /* Use ranges property to determine where PCI MEM, I/O, and Config
1644 * space are for this PCI bus module.
1646 static void schizo_determine_mem_io_space(struct pci_pbm_info *pbm)
1648 int i, saw_cfg, saw_mem, saw_io;
1650 saw_cfg = saw_mem = saw_io = 0;
1651 for (i = 0; i < pbm->num_pbm_ranges; i++) {
1652 struct linux_prom_pci_ranges *pr = &pbm->pbm_ranges[i];
1656 type = (pr->child_phys_hi >> 24) & 0x3;
1657 a = (((unsigned long)pr->parent_phys_hi << 32UL) |
1658 ((unsigned long)pr->parent_phys_lo << 0UL));
1662 /* PCI config space, 16MB */
1663 pbm->config_space = a;
1668 /* 16-bit IO space, 16MB */
1669 pbm->io_space.start = a;
1670 pbm->io_space.end = a + ((16UL*1024UL*1024UL) - 1UL);
1671 pbm->io_space.flags = IORESOURCE_IO;
1676 /* 32-bit MEM space, 2GB */
1677 pbm->mem_space.start = a;
1678 pbm->mem_space.end = a + (0x80000000UL - 1UL);
1679 pbm->mem_space.flags = IORESOURCE_MEM;
1688 if (!saw_cfg || !saw_io || !saw_mem) {
1689 prom_printf("%s: Fatal error, missing %s PBM range.\n",
1698 printk("%s: PCI CFG[%lx] IO[%lx] MEM[%lx]\n",
1701 pbm->io_space.start,
1702 pbm->mem_space.start);
1705 static void pbm_register_toplevel_resources(struct pci_controller_info *p,
1706 struct pci_pbm_info *pbm)
1708 pbm->io_space.name = pbm->mem_space.name = pbm->name;
1710 request_resource(&ioport_resource, &pbm->io_space);
1711 request_resource(&iomem_resource, &pbm->mem_space);
1712 pci_register_legacy_regions(&pbm->io_space,
1716 #define SCHIZO_STRBUF_CONTROL (0x02800UL)
1717 #define SCHIZO_STRBUF_FLUSH (0x02808UL)
1718 #define SCHIZO_STRBUF_FSYNC (0x02810UL)
1719 #define SCHIZO_STRBUF_CTXFLUSH (0x02818UL)
1720 #define SCHIZO_STRBUF_CTXMATCH (0x10000UL)
1722 static void schizo_pbm_strbuf_init(struct pci_pbm_info *pbm)
1724 unsigned long base = pbm->pbm_regs;
1727 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
1728 /* TOMATILLO lacks streaming cache. */
1732 /* SCHIZO has context flushing. */
1733 pbm->stc.strbuf_control = base + SCHIZO_STRBUF_CONTROL;
1734 pbm->stc.strbuf_pflush = base + SCHIZO_STRBUF_FLUSH;
1735 pbm->stc.strbuf_fsync = base + SCHIZO_STRBUF_FSYNC;
1736 pbm->stc.strbuf_ctxflush = base + SCHIZO_STRBUF_CTXFLUSH;
1737 pbm->stc.strbuf_ctxmatch_base = base + SCHIZO_STRBUF_CTXMATCH;
1739 pbm->stc.strbuf_flushflag = (volatile unsigned long *)
1740 ((((unsigned long)&pbm->stc.__flushflag_buf[0])
1743 pbm->stc.strbuf_flushflag_pa = (unsigned long)
1744 __pa(pbm->stc.strbuf_flushflag);
1746 /* Turn off LRU locking and diag mode, enable the
1747 * streaming buffer and leave the rerun-disable
1748 * setting however OBP set it.
1750 control = schizo_read(pbm->stc.strbuf_control);
1751 control &= ~(SCHIZO_STRBUF_CTRL_LPTR |
1752 SCHIZO_STRBUF_CTRL_LENAB |
1753 SCHIZO_STRBUF_CTRL_DENAB);
1754 control |= SCHIZO_STRBUF_CTRL_ENAB;
1755 schizo_write(pbm->stc.strbuf_control, control);
1757 pbm->stc.strbuf_enabled = 1;
1760 #define SCHIZO_IOMMU_CONTROL (0x00200UL)
1761 #define SCHIZO_IOMMU_TSBBASE (0x00208UL)
1762 #define SCHIZO_IOMMU_FLUSH (0x00210UL)
1763 #define SCHIZO_IOMMU_CTXFLUSH (0x00218UL)
1765 static void schizo_pbm_iommu_init(struct pci_pbm_info *pbm)
1767 struct pci_iommu *iommu = pbm->iommu;
1768 unsigned long i, tagbase, database;
1769 u32 vdma[2], dma_mask;
1773 err = prom_getproperty(pbm->prom_node, "virtual-dma",
1774 (char *)&vdma[0], sizeof(vdma));
1775 if (err == 0 || err == -1) {
1776 /* No property, use default values. */
1777 vdma[0] = 0xc0000000;
1778 vdma[1] = 0x40000000;
1784 dma_mask |= 0x1fffffff;
1789 dma_mask |= 0x3fffffff;
1794 dma_mask |= 0x7fffffff;
1799 prom_printf("SCHIZO: strange virtual-dma size.\n");
1803 /* Register addresses, SCHIZO has iommu ctx flushing. */
1804 iommu->iommu_control = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL;
1805 iommu->iommu_tsbbase = pbm->pbm_regs + SCHIZO_IOMMU_TSBBASE;
1806 iommu->iommu_flush = pbm->pbm_regs + SCHIZO_IOMMU_FLUSH;
1807 iommu->iommu_ctxflush = pbm->pbm_regs + SCHIZO_IOMMU_CTXFLUSH;
1809 /* We use the main control/status register of SCHIZO as the write
1810 * completion register.
1812 iommu->write_complete_reg = pbm->controller_regs + 0x10000UL;
1815 * Invalidate TLB Entries.
1817 control = schizo_read(iommu->iommu_control);
1818 control |= SCHIZO_IOMMU_CTRL_DENAB;
1819 schizo_write(iommu->iommu_control, control);
1821 tagbase = SCHIZO_IOMMU_TAG, database = SCHIZO_IOMMU_DATA;
1823 for(i = 0; i < 16; i++) {
1824 schizo_write(pbm->pbm_regs + tagbase + (i * 8UL), 0);
1825 schizo_write(pbm->pbm_regs + database + (i * 8UL), 0);
1828 /* Leave diag mode enabled for full-flushing done
1831 pci_iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask);
1833 schizo_write(iommu->iommu_tsbbase, __pa(iommu->page_table));
1835 control = schizo_read(iommu->iommu_control);
1836 control &= ~(SCHIZO_IOMMU_CTRL_TSBSZ | SCHIZO_IOMMU_CTRL_TBWSZ);
1839 control |= SCHIZO_IOMMU_TSBSZ_64K;
1842 control |= SCHIZO_IOMMU_TSBSZ_128K;
1846 control |= SCHIZO_IOMMU_CTRL_ENAB;
1847 schizo_write(iommu->iommu_control, control);
1850 #define SCHIZO_PCI_IRQ_RETRY (0x1a00UL)
1851 #define SCHIZO_IRQ_RETRY_INF 0xffUL
1853 #define SCHIZO_PCI_DIAG (0x2020UL)
1854 #define SCHIZO_PCIDIAG_D_BADECC (1UL << 10UL) /* Disable BAD ECC errors (Schizo) */
1855 #define SCHIZO_PCIDIAG_D_BYPASS (1UL << 9UL) /* Disable MMU bypass mode (Schizo/Tomatillo) */
1856 #define SCHIZO_PCIDIAG_D_TTO (1UL << 8UL) /* Disable TTO errors (Schizo/Tomatillo) */
1857 #define SCHIZO_PCIDIAG_D_RTRYARB (1UL << 7UL) /* Disable retry arbitration (Schizo) */
1858 #define SCHIZO_PCIDIAG_D_RETRY (1UL << 6UL) /* Disable retry limit (Schizo/Tomatillo) */
1859 #define SCHIZO_PCIDIAG_D_INTSYNC (1UL << 5UL) /* Disable interrupt/DMA synch (Schizo/Tomatillo) */
1860 #define SCHIZO_PCIDIAG_I_DMA_PARITY (1UL << 3UL) /* Invert DMA parity (Schizo/Tomatillo) */
1861 #define SCHIZO_PCIDIAG_I_PIOD_PARITY (1UL << 2UL) /* Invert PIO data parity (Schizo/Tomatillo) */
1862 #define SCHIZO_PCIDIAG_I_PIOA_PARITY (1UL << 1UL) /* Invert PIO address parity (Schizo/Tomatillo) */
1864 #define TOMATILLO_PCI_IOC_CSR (0x2248UL)
1865 #define TOMATILLO_IOC_PART_WPENAB 0x0000000000080000UL
1866 #define TOMATILLO_IOC_RDMULT_PENAB 0x0000000000040000UL
1867 #define TOMATILLO_IOC_RDONE_PENAB 0x0000000000020000UL
1868 #define TOMATILLO_IOC_RDLINE_PENAB 0x0000000000010000UL
1869 #define TOMATILLO_IOC_RDMULT_PLEN 0x000000000000c000UL
1870 #define TOMATILLO_IOC_RDMULT_PLEN_SHIFT 14UL
1871 #define TOMATILLO_IOC_RDONE_PLEN 0x0000000000003000UL
1872 #define TOMATILLO_IOC_RDONE_PLEN_SHIFT 12UL
1873 #define TOMATILLO_IOC_RDLINE_PLEN 0x0000000000000c00UL
1874 #define TOMATILLO_IOC_RDLINE_PLEN_SHIFT 10UL
1875 #define TOMATILLO_IOC_PREF_OFF 0x00000000000003f8UL
1876 #define TOMATILLO_IOC_PREF_OFF_SHIFT 3UL
1877 #define TOMATILLO_IOC_RDMULT_CPENAB 0x0000000000000004UL
1878 #define TOMATILLO_IOC_RDONE_CPENAB 0x0000000000000002UL
1879 #define TOMATILLO_IOC_RDLINE_CPENAB 0x0000000000000001UL
1881 #define TOMATILLO_PCI_IOC_TDIAG (0x2250UL)
1882 #define TOMATILLO_PCI_IOC_DDIAG (0x2290UL)
1884 static void schizo_pbm_hw_init(struct pci_pbm_info *pbm)
1888 schizo_write(pbm->pbm_regs + SCHIZO_PCI_IRQ_RETRY, 5);
1890 tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_CTRL);
1892 /* Enable arbiter for all PCI slots. */
1895 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
1896 pbm->chip_version >= 0x2)
1897 tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT;
1899 if (!prom_getbool(pbm->prom_node, "no-bus-parking"))
1900 tmp |= SCHIZO_PCICTRL_PARK;
1902 tmp &= ~SCHIZO_PCICTRL_PARK;
1904 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
1905 pbm->chip_version <= 0x1)
1906 tmp |= SCHIZO_PCICTRL_DTO_INT;
1908 tmp &= ~SCHIZO_PCICTRL_DTO_INT;
1910 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
1911 tmp |= (SCHIZO_PCICTRL_MRM_PREF |
1912 SCHIZO_PCICTRL_RDO_PREF |
1913 SCHIZO_PCICTRL_RDL_PREF);
1915 schizo_write(pbm->pbm_regs + SCHIZO_PCI_CTRL, tmp);
1917 tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_DIAG);
1918 tmp &= ~(SCHIZO_PCIDIAG_D_RTRYARB |
1919 SCHIZO_PCIDIAG_D_RETRY |
1920 SCHIZO_PCIDIAG_D_INTSYNC);
1921 schizo_write(pbm->pbm_regs + SCHIZO_PCI_DIAG, tmp);
1923 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
1924 /* Clear prefetch lengths to workaround a bug in
1927 tmp = (TOMATILLO_IOC_PART_WPENAB |
1928 (1 << TOMATILLO_IOC_PREF_OFF_SHIFT) |
1929 TOMATILLO_IOC_RDMULT_CPENAB |
1930 TOMATILLO_IOC_RDONE_CPENAB |
1931 TOMATILLO_IOC_RDLINE_CPENAB);
1933 schizo_write(pbm->pbm_regs + TOMATILLO_PCI_IOC_CSR,
1938 static void schizo_pbm_init(struct pci_controller_info *p,
1939 int prom_node, u32 portid,
1942 struct linux_prom64_registers pr_regs[4];
1943 unsigned int busrange[2];
1944 struct pci_pbm_info *pbm;
1945 const char *chipset_name;
1950 switch (chip_type) {
1951 case PBM_CHIP_TYPE_TOMATILLO:
1952 chipset_name = "TOMATILLO";
1955 case PBM_CHIP_TYPE_SCHIZO_PLUS:
1956 chipset_name = "SCHIZO+";
1959 case PBM_CHIP_TYPE_SCHIZO:
1961 chipset_name = "SCHIZO";
1965 /* For SCHIZO, three OBP regs:
1966 * 1) PBM controller regs
1967 * 2) Schizo front-end controller regs (same for both PBMs)
1968 * 3) PBM PCI config space
1970 * For TOMATILLO, four OBP regs:
1971 * 1) PBM controller regs
1972 * 2) Tomatillo front-end controller regs
1973 * 3) PBM PCI config space
1976 err = prom_getproperty(prom_node, "reg",
1977 (char *)&pr_regs[0],
1979 if (err == 0 || err == -1) {
1980 prom_printf("%s: Fatal error, no reg property.\n",
1985 is_pbm_a = ((pr_regs[0].phys_addr & 0x00700000) == 0x00600000);
1992 pbm->portid = portid;
1994 pbm->prom_node = prom_node;
1995 pbm->pci_first_slot = 1;
1997 pbm->chip_type = chip_type;
1999 prom_getintdefault(prom_node, "version#", 0);
2000 pbm->chip_revision =
2001 prom_getintdefault(prom_node, "module-revision#", 0);
2003 pbm->pbm_regs = pr_regs[0].phys_addr;
2004 pbm->controller_regs = pr_regs[1].phys_addr - 0x10000UL;
2006 if (chip_type == PBM_CHIP_TYPE_TOMATILLO)
2007 pbm->sync_reg = pr_regs[3].phys_addr + 0x1a18UL;
2010 (chip_type == PBM_CHIP_TYPE_TOMATILLO ?
2011 "TOMATILLO%d PBM%c" :
2014 (pbm == &p->pbm_A ? 'A' : 'B'));
2016 printk("%s: ver[%x:%x], portid %x, "
2017 "cregs[%lx] pregs[%lx]\n",
2019 pbm->chip_version, pbm->chip_revision,
2021 pbm->controller_regs,
2024 schizo_pbm_hw_init(pbm);
2026 prom_getstring(prom_node, "name",
2028 sizeof(pbm->prom_name));
2030 err = prom_getproperty(prom_node, "ranges",
2031 (char *) pbm->pbm_ranges,
2032 sizeof(pbm->pbm_ranges));
2033 if (err == 0 || err == -1) {
2034 prom_printf("%s: Fatal error, no ranges property.\n",
2039 pbm->num_pbm_ranges =
2040 (err / sizeof(struct linux_prom_pci_ranges));
2042 schizo_determine_mem_io_space(pbm);
2043 pbm_register_toplevel_resources(p, pbm);
2045 err = prom_getproperty(prom_node, "interrupt-map",
2046 (char *)pbm->pbm_intmap,
2047 sizeof(pbm->pbm_intmap));
2049 pbm->num_pbm_intmap = (err / sizeof(struct linux_prom_pci_intmap));
2050 err = prom_getproperty(prom_node, "interrupt-map-mask",
2051 (char *)&pbm->pbm_intmask,
2052 sizeof(pbm->pbm_intmask));
2054 prom_printf("%s: Fatal error, no "
2055 "interrupt-map-mask.\n", pbm->name);
2059 pbm->num_pbm_intmap = 0;
2060 memset(&pbm->pbm_intmask, 0, sizeof(pbm->pbm_intmask));
2063 err = prom_getproperty(prom_node, "ino-bitmap",
2064 (char *) &ino_bitmap[0],
2065 sizeof(ino_bitmap));
2066 if (err == 0 || err == -1) {
2067 prom_printf("%s: Fatal error, no ino-bitmap.\n", pbm->name);
2070 pbm->ino_bitmap = (((u64)ino_bitmap[1] << 32UL) |
2071 ((u64)ino_bitmap[0] << 0UL));
2073 err = prom_getproperty(prom_node, "bus-range",
2074 (char *)&busrange[0],
2076 if (err == 0 || err == -1) {
2077 prom_printf("%s: Fatal error, no bus-range.\n", pbm->name);
2080 pbm->pci_first_busno = busrange[0];
2081 pbm->pci_last_busno = busrange[1];
2083 schizo_pbm_iommu_init(pbm);
2084 schizo_pbm_strbuf_init(pbm);
2087 static inline int portid_compare(u32 x, u32 y, int chip_type)
2089 if (chip_type == PBM_CHIP_TYPE_TOMATILLO) {
2097 static void __schizo_init(int node, char *model_name, int chip_type)
2099 struct pci_controller_info *p;
2100 struct pci_iommu *iommu;
2104 portid = prom_getintdefault(node, "portid", 0xff);
2106 for(p = pci_controller_root; p; p = p->next) {
2107 struct pci_pbm_info *pbm;
2109 if (p->pbm_A.prom_node && p->pbm_B.prom_node)
2112 pbm = (p->pbm_A.prom_node ?
2116 if (portid_compare(pbm->portid, portid, chip_type)) {
2117 is_pbm_a = (p->pbm_A.prom_node == 0);
2118 schizo_pbm_init(p, node, portid, chip_type);
2123 p = kmalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
2125 prom_printf("SCHIZO: Fatal memory allocation error.\n");
2128 memset(p, 0, sizeof(*p));
2130 iommu = kmalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
2132 prom_printf("SCHIZO: Fatal memory allocation error.\n");
2135 memset(iommu, 0, sizeof(*iommu));
2136 p->pbm_A.iommu = iommu;
2138 iommu = kmalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
2140 prom_printf("SCHIZO: Fatal memory allocation error.\n");
2143 memset(iommu, 0, sizeof(*iommu));
2144 p->pbm_B.iommu = iommu;
2146 p->next = pci_controller_root;
2147 pci_controller_root = p;
2149 p->index = pci_num_controllers++;
2150 p->pbms_same_domain = 0;
2151 p->scan_bus = (chip_type == PBM_CHIP_TYPE_TOMATILLO ?
2152 tomatillo_scan_bus :
2154 p->irq_build = schizo_irq_build;
2155 p->base_address_update = schizo_base_address_update;
2156 p->resource_adjust = schizo_resource_adjust;
2157 p->pci_ops = &schizo_ops;
2159 /* Like PSYCHO we have a 2GB aligned area for memory space. */
2160 pci_memspace_mask = 0x7fffffffUL;
2162 schizo_pbm_init(p, node, portid, chip_type);
2165 void schizo_init(int node, char *model_name)
2167 __schizo_init(node, model_name, PBM_CHIP_TYPE_SCHIZO);
2170 void schizo_plus_init(int node, char *model_name)
2172 __schizo_init(node, model_name, PBM_CHIP_TYPE_SCHIZO_PLUS);
2175 void tomatillo_init(int node, char *model_name)
2177 __schizo_init(node, model_name, PBM_CHIP_TYPE_TOMATILLO);