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 static void tomatillo_wsync_handler(struct ino_bucket *bucket, void *_arg1, void *_arg2)
237 unsigned long sync_reg = (unsigned long) _arg2;
238 u64 mask = 1UL << (__irq_ino(__irq(bucket)) & IMAP_INO);
242 schizo_write(sync_reg, mask);
247 val = schizo_read(sync_reg);
252 printk("tomatillo_wsync_handler: DMA won't sync [%lx:%lx]\n",
257 static unsigned char cacheline[64]
258 __attribute__ ((aligned (64)));
260 __asm__ __volatile__("rd %%fprs, %0\n\t"
262 "wr %1, 0x0, %%fprs\n\t"
263 "stda %%f0, [%5] %6\n\t"
264 "wr %0, 0x0, %%fprs\n\t"
266 : "=&r" (mask), "=&r" (val)
267 : "0" (mask), "1" (val),
268 "i" (FPRS_FEF), "r" (&cacheline[0]),
269 "i" (ASI_BLK_COMMIT_P));
273 static unsigned int schizo_irq_build(struct pci_pbm_info *pbm,
274 struct pci_dev *pdev,
277 struct ino_bucket *bucket;
278 unsigned long imap, iclr;
279 unsigned long imap_off, iclr_off;
283 imap_off = schizo_imap_offset(ino);
285 /* Now build the IRQ bucket. */
286 imap = pbm->pbm_regs + imap_off;
289 iclr_off = schizo_iclr_offset(ino);
290 iclr = pbm->pbm_regs + iclr_off;
293 /* On Schizo, no inofixup occurs. This is because each
294 * INO has it's own IMAP register. On Psycho and Sabre
295 * there is only one IMAP register for each PCI slot even
296 * though four different INOs can be generated by each
299 * But, for JBUS variants (essentially, Tomatillo), we have
300 * to fixup the lowest bit of the interrupt group number.
303 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
305 ign_fixup = (1 << 6);
308 bucket = __bucket(build_irq(ign_fixup, iclr, imap));
309 bucket->flags |= IBF_PCI;
311 if (pdev && pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
312 struct irq_desc *p = bucket->irq_info;
314 p->pre_handler = tomatillo_wsync_handler;
315 p->pre_handler_arg1 = ((pbm->chip_version <= 4) ?
316 (void *) 1 : (void *) 0);
317 p->pre_handler_arg2 = (void *) pbm->sync_reg;
320 return __irq(bucket);
323 /* SCHIZO error handling support. */
324 enum schizo_error_type {
325 UE_ERR, CE_ERR, PCI_ERR, SAFARI_ERR
328 static DEFINE_SPINLOCK(stc_buf_lock);
329 static unsigned long stc_error_buf[128];
330 static unsigned long stc_tag_buf[16];
331 static unsigned long stc_line_buf[16];
333 #define SCHIZO_UE_INO 0x30 /* Uncorrectable ECC error */
334 #define SCHIZO_CE_INO 0x31 /* Correctable ECC error */
335 #define SCHIZO_PCIERR_A_INO 0x32 /* PBM A PCI bus error */
336 #define SCHIZO_PCIERR_B_INO 0x33 /* PBM B PCI bus error */
337 #define SCHIZO_SERR_INO 0x34 /* Safari interface error */
339 struct pci_pbm_info *pbm_for_ino(struct pci_controller_info *p, u32 ino)
342 if (p->pbm_A.ino_bitmap & (1UL << ino))
344 if (p->pbm_B.ino_bitmap & (1UL << ino))
347 printk("PCI%d: No ino_bitmap entry for ino[%x], bitmaps "
348 "PBM_A[%016lx] PBM_B[%016lx]",
351 p->pbm_B.ino_bitmap);
352 printk("PCI%d: Using PBM_A, report this problem immediately.\n",
358 static void schizo_clear_other_err_intr(struct pci_controller_info *p, int irq)
360 struct pci_pbm_info *pbm;
361 struct ino_bucket *bucket;
364 /* Do not clear the interrupt for the other PCI bus.
366 * This "ACK both PBM IRQs" only needs to be performed
367 * for chip-wide error interrupts.
369 if ((irq & IMAP_INO) == SCHIZO_PCIERR_A_INO ||
370 (irq & IMAP_INO) == SCHIZO_PCIERR_B_INO)
373 pbm = pbm_for_ino(p, irq);
374 if (pbm == &p->pbm_A)
379 irq = schizo_irq_build(pbm, NULL,
380 (pbm->portid << 6) | (irq & IMAP_INO));
381 bucket = __bucket(irq);
384 upa_writel(ICLR_IDLE, iclr);
387 #define SCHIZO_STC_ERR 0xb800UL /* --> 0xba00 */
388 #define SCHIZO_STC_TAG 0xba00UL /* --> 0xba80 */
389 #define SCHIZO_STC_LINE 0xbb00UL /* --> 0xbb80 */
391 #define SCHIZO_STCERR_WRITE 0x2UL
392 #define SCHIZO_STCERR_READ 0x1UL
394 #define SCHIZO_STCTAG_PPN 0x3fffffff00000000UL
395 #define SCHIZO_STCTAG_VPN 0x00000000ffffe000UL
396 #define SCHIZO_STCTAG_VALID 0x8000000000000000UL
397 #define SCHIZO_STCTAG_READ 0x4000000000000000UL
399 #define SCHIZO_STCLINE_LINDX 0x0000000007800000UL
400 #define SCHIZO_STCLINE_SPTR 0x000000000007e000UL
401 #define SCHIZO_STCLINE_LADDR 0x0000000000001fc0UL
402 #define SCHIZO_STCLINE_EPTR 0x000000000000003fUL
403 #define SCHIZO_STCLINE_VALID 0x0000000000600000UL
404 #define SCHIZO_STCLINE_FOFN 0x0000000000180000UL
406 static void __schizo_check_stc_error_pbm(struct pci_pbm_info *pbm,
407 enum schizo_error_type type)
409 struct pci_strbuf *strbuf = &pbm->stc;
410 unsigned long regbase = pbm->pbm_regs;
411 unsigned long err_base, tag_base, line_base;
415 err_base = regbase + SCHIZO_STC_ERR;
416 tag_base = regbase + SCHIZO_STC_TAG;
417 line_base = regbase + SCHIZO_STC_LINE;
419 spin_lock(&stc_buf_lock);
421 /* This is __REALLY__ dangerous. When we put the
422 * streaming buffer into diagnostic mode to probe
423 * it's tags and error status, we _must_ clear all
424 * of the line tag valid bits before re-enabling
425 * the streaming buffer. If any dirty data lives
426 * in the STC when we do this, we will end up
427 * invalidating it before it has a chance to reach
430 control = schizo_read(strbuf->strbuf_control);
431 schizo_write(strbuf->strbuf_control,
432 (control | SCHIZO_STRBUF_CTRL_DENAB));
433 for (i = 0; i < 128; i++) {
436 val = schizo_read(err_base + (i * 8UL));
437 schizo_write(err_base + (i * 8UL), 0UL);
438 stc_error_buf[i] = val;
440 for (i = 0; i < 16; i++) {
441 stc_tag_buf[i] = schizo_read(tag_base + (i * 8UL));
442 stc_line_buf[i] = schizo_read(line_base + (i * 8UL));
443 schizo_write(tag_base + (i * 8UL), 0UL);
444 schizo_write(line_base + (i * 8UL), 0UL);
447 /* OK, state is logged, exit diagnostic mode. */
448 schizo_write(strbuf->strbuf_control, control);
450 for (i = 0; i < 16; i++) {
451 int j, saw_error, first, last;
456 for (j = first; j < last; j++) {
457 unsigned long errval = stc_error_buf[j];
460 printk("%s: STC_ERR(%d)[wr(%d)rd(%d)]\n",
463 (errval & SCHIZO_STCERR_WRITE) ? 1 : 0,
464 (errval & SCHIZO_STCERR_READ) ? 1 : 0);
467 if (saw_error != 0) {
468 unsigned long tagval = stc_tag_buf[i];
469 unsigned long lineval = stc_line_buf[i];
470 printk("%s: STC_TAG(%d)[PA(%016lx)VA(%08lx)V(%d)R(%d)]\n",
473 ((tagval & SCHIZO_STCTAG_PPN) >> 19UL),
474 (tagval & SCHIZO_STCTAG_VPN),
475 ((tagval & SCHIZO_STCTAG_VALID) ? 1 : 0),
476 ((tagval & SCHIZO_STCTAG_READ) ? 1 : 0));
478 /* XXX Should spit out per-bank error information... -DaveM */
479 printk("%s: STC_LINE(%d)[LIDX(%lx)SP(%lx)LADDR(%lx)EP(%lx)"
483 ((lineval & SCHIZO_STCLINE_LINDX) >> 23UL),
484 ((lineval & SCHIZO_STCLINE_SPTR) >> 13UL),
485 ((lineval & SCHIZO_STCLINE_LADDR) >> 6UL),
486 ((lineval & SCHIZO_STCLINE_EPTR) >> 0UL),
487 ((lineval & SCHIZO_STCLINE_VALID) ? 1 : 0),
488 ((lineval & SCHIZO_STCLINE_FOFN) ? 1 : 0));
492 spin_unlock(&stc_buf_lock);
495 /* IOMMU is per-PBM in Schizo, so interrogate both for anonymous
496 * controller level errors.
499 #define SCHIZO_IOMMU_TAG 0xa580UL
500 #define SCHIZO_IOMMU_DATA 0xa600UL
502 #define SCHIZO_IOMMU_TAG_CTXT 0x0000001ffe000000UL
503 #define SCHIZO_IOMMU_TAG_ERRSTS 0x0000000001800000UL
504 #define SCHIZO_IOMMU_TAG_ERR 0x0000000000400000UL
505 #define SCHIZO_IOMMU_TAG_WRITE 0x0000000000200000UL
506 #define SCHIZO_IOMMU_TAG_STREAM 0x0000000000100000UL
507 #define SCHIZO_IOMMU_TAG_SIZE 0x0000000000080000UL
508 #define SCHIZO_IOMMU_TAG_VPAGE 0x000000000007ffffUL
510 #define SCHIZO_IOMMU_DATA_VALID 0x0000000100000000UL
511 #define SCHIZO_IOMMU_DATA_CACHE 0x0000000040000000UL
512 #define SCHIZO_IOMMU_DATA_PPAGE 0x000000003fffffffUL
514 static void schizo_check_iommu_error_pbm(struct pci_pbm_info *pbm,
515 enum schizo_error_type type)
517 struct pci_iommu *iommu = pbm->iommu;
518 unsigned long iommu_tag[16];
519 unsigned long iommu_data[16];
524 spin_lock_irqsave(&iommu->lock, flags);
525 control = schizo_read(iommu->iommu_control);
526 if (control & SCHIZO_IOMMU_CTRL_XLTEERR) {
530 /* Clear the error encountered bit. */
531 control &= ~SCHIZO_IOMMU_CTRL_XLTEERR;
532 schizo_write(iommu->iommu_control, control);
534 switch((control & SCHIZO_IOMMU_CTRL_XLTESTAT) >> 25UL) {
536 type_string = "Protection Error";
539 type_string = "Invalid Error";
542 type_string = "TimeOut Error";
546 type_string = "ECC Error";
549 printk("%s: IOMMU Error, type[%s]\n",
550 pbm->name, type_string);
552 /* Put the IOMMU into diagnostic mode and probe
553 * it's TLB for entries with error status.
555 * It is very possible for another DVMA to occur
556 * while we do this probe, and corrupt the system
557 * further. But we are so screwed at this point
558 * that we are likely to crash hard anyways, so
559 * get as much diagnostic information to the
562 schizo_write(iommu->iommu_control,
563 control | SCHIZO_IOMMU_CTRL_DENAB);
565 base = pbm->pbm_regs;
567 for (i = 0; i < 16; i++) {
569 schizo_read(base + SCHIZO_IOMMU_TAG + (i * 8UL));
571 schizo_read(base + SCHIZO_IOMMU_DATA + (i * 8UL));
573 /* Now clear out the entry. */
574 schizo_write(base + SCHIZO_IOMMU_TAG + (i * 8UL), 0);
575 schizo_write(base + SCHIZO_IOMMU_DATA + (i * 8UL), 0);
578 /* Leave diagnostic mode. */
579 schizo_write(iommu->iommu_control, control);
581 for (i = 0; i < 16; i++) {
582 unsigned long tag, data;
585 if (!(tag & SCHIZO_IOMMU_TAG_ERR))
588 data = iommu_data[i];
589 switch((tag & SCHIZO_IOMMU_TAG_ERRSTS) >> 23UL) {
591 type_string = "Protection Error";
594 type_string = "Invalid Error";
597 type_string = "TimeOut Error";
601 type_string = "ECC Error";
604 printk("%s: IOMMU TAG(%d)[error(%s) ctx(%x) wr(%d) str(%d) "
605 "sz(%dK) vpg(%08lx)]\n",
606 pbm->name, i, type_string,
607 (int)((tag & SCHIZO_IOMMU_TAG_CTXT) >> 25UL),
608 ((tag & SCHIZO_IOMMU_TAG_WRITE) ? 1 : 0),
609 ((tag & SCHIZO_IOMMU_TAG_STREAM) ? 1 : 0),
610 ((tag & SCHIZO_IOMMU_TAG_SIZE) ? 64 : 8),
611 (tag & SCHIZO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT);
612 printk("%s: IOMMU DATA(%d)[valid(%d) cache(%d) ppg(%016lx)]\n",
614 ((data & SCHIZO_IOMMU_DATA_VALID) ? 1 : 0),
615 ((data & SCHIZO_IOMMU_DATA_CACHE) ? 1 : 0),
616 (data & SCHIZO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT);
619 if (pbm->stc.strbuf_enabled)
620 __schizo_check_stc_error_pbm(pbm, type);
621 spin_unlock_irqrestore(&iommu->lock, flags);
624 static void schizo_check_iommu_error(struct pci_controller_info *p,
625 enum schizo_error_type type)
627 schizo_check_iommu_error_pbm(&p->pbm_A, type);
628 schizo_check_iommu_error_pbm(&p->pbm_B, type);
631 /* Uncorrectable ECC error status gathering. */
632 #define SCHIZO_UE_AFSR 0x10030UL
633 #define SCHIZO_UE_AFAR 0x10038UL
635 #define SCHIZO_UEAFSR_PPIO 0x8000000000000000UL /* Safari */
636 #define SCHIZO_UEAFSR_PDRD 0x4000000000000000UL /* Safari/Tomatillo */
637 #define SCHIZO_UEAFSR_PDWR 0x2000000000000000UL /* Safari */
638 #define SCHIZO_UEAFSR_SPIO 0x1000000000000000UL /* Safari */
639 #define SCHIZO_UEAFSR_SDMA 0x0800000000000000UL /* Safari/Tomatillo */
640 #define SCHIZO_UEAFSR_ERRPNDG 0x0300000000000000UL /* Safari */
641 #define SCHIZO_UEAFSR_BMSK 0x000003ff00000000UL /* Safari */
642 #define SCHIZO_UEAFSR_QOFF 0x00000000c0000000UL /* Safari/Tomatillo */
643 #define SCHIZO_UEAFSR_AID 0x000000001f000000UL /* Safari/Tomatillo */
644 #define SCHIZO_UEAFSR_PARTIAL 0x0000000000800000UL /* Safari */
645 #define SCHIZO_UEAFSR_OWNEDIN 0x0000000000400000UL /* Safari */
646 #define SCHIZO_UEAFSR_MTAGSYND 0x00000000000f0000UL /* Safari */
647 #define SCHIZO_UEAFSR_MTAG 0x000000000000e000UL /* Safari */
648 #define SCHIZO_UEAFSR_ECCSYND 0x00000000000001ffUL /* Safari */
650 static irqreturn_t schizo_ue_intr(int irq, void *dev_id, struct pt_regs *regs)
652 struct pci_controller_info *p = dev_id;
653 unsigned long afsr_reg = p->pbm_B.controller_regs + SCHIZO_UE_AFSR;
654 unsigned long afar_reg = p->pbm_B.controller_regs + SCHIZO_UE_AFAR;
655 unsigned long afsr, afar, error_bits;
658 /* Latch uncorrectable error status. */
659 afar = schizo_read(afar_reg);
661 /* If either of the error pending bits are set in the
662 * AFSR, the error status is being actively updated by
663 * the hardware and we must re-read to get a clean value.
667 afsr = schizo_read(afsr_reg);
668 } while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);
670 /* Clear the primary/secondary error status bits. */
672 (SCHIZO_UEAFSR_PPIO | SCHIZO_UEAFSR_PDRD | SCHIZO_UEAFSR_PDWR |
673 SCHIZO_UEAFSR_SPIO | SCHIZO_UEAFSR_SDMA);
676 schizo_write(afsr_reg, error_bits);
679 printk("PCI%d: Uncorrectable Error, primary error type[%s]\n",
681 (((error_bits & SCHIZO_UEAFSR_PPIO) ?
683 ((error_bits & SCHIZO_UEAFSR_PDRD) ?
685 ((error_bits & SCHIZO_UEAFSR_PDWR) ?
686 "DMA Write" : "???")))));
687 printk("PCI%d: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n",
689 (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
690 (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
691 (afsr & SCHIZO_UEAFSR_AID) >> 24UL);
692 printk("PCI%d: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n",
694 (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
695 (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
696 (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
697 (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
698 (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);
699 printk("PCI%d: UE AFAR [%016lx]\n", p->index, afar);
700 printk("PCI%d: UE Secondary errors [", p->index);
702 if (afsr & SCHIZO_UEAFSR_SPIO) {
706 if (afsr & SCHIZO_UEAFSR_SDMA) {
714 /* Interrogate IOMMU for error status. */
715 schizo_check_iommu_error(p, UE_ERR);
717 schizo_clear_other_err_intr(p, irq);
722 #define SCHIZO_CE_AFSR 0x10040UL
723 #define SCHIZO_CE_AFAR 0x10048UL
725 #define SCHIZO_CEAFSR_PPIO 0x8000000000000000UL
726 #define SCHIZO_CEAFSR_PDRD 0x4000000000000000UL
727 #define SCHIZO_CEAFSR_PDWR 0x2000000000000000UL
728 #define SCHIZO_CEAFSR_SPIO 0x1000000000000000UL
729 #define SCHIZO_CEAFSR_SDMA 0x0800000000000000UL
730 #define SCHIZO_CEAFSR_ERRPNDG 0x0300000000000000UL
731 #define SCHIZO_CEAFSR_BMSK 0x000003ff00000000UL
732 #define SCHIZO_CEAFSR_QOFF 0x00000000c0000000UL
733 #define SCHIZO_CEAFSR_AID 0x000000001f000000UL
734 #define SCHIZO_CEAFSR_PARTIAL 0x0000000000800000UL
735 #define SCHIZO_CEAFSR_OWNEDIN 0x0000000000400000UL
736 #define SCHIZO_CEAFSR_MTAGSYND 0x00000000000f0000UL
737 #define SCHIZO_CEAFSR_MTAG 0x000000000000e000UL
738 #define SCHIZO_CEAFSR_ECCSYND 0x00000000000001ffUL
740 static irqreturn_t schizo_ce_intr(int irq, void *dev_id, struct pt_regs *regs)
742 struct pci_controller_info *p = dev_id;
743 unsigned long afsr_reg = p->pbm_B.controller_regs + SCHIZO_CE_AFSR;
744 unsigned long afar_reg = p->pbm_B.controller_regs + SCHIZO_CE_AFAR;
745 unsigned long afsr, afar, error_bits;
748 /* Latch error status. */
749 afar = schizo_read(afar_reg);
751 /* If either of the error pending bits are set in the
752 * AFSR, the error status is being actively updated by
753 * the hardware and we must re-read to get a clean value.
757 afsr = schizo_read(afsr_reg);
758 } while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);
760 /* Clear primary/secondary error status bits. */
762 (SCHIZO_CEAFSR_PPIO | SCHIZO_CEAFSR_PDRD | SCHIZO_CEAFSR_PDWR |
763 SCHIZO_CEAFSR_SPIO | SCHIZO_CEAFSR_SDMA);
766 schizo_write(afsr_reg, error_bits);
769 printk("PCI%d: Correctable Error, primary error type[%s]\n",
771 (((error_bits & SCHIZO_CEAFSR_PPIO) ?
773 ((error_bits & SCHIZO_CEAFSR_PDRD) ?
775 ((error_bits & SCHIZO_CEAFSR_PDWR) ?
776 "DMA Write" : "???")))));
778 /* XXX Use syndrome and afar to print out module string just like
779 * XXX UDB CE trap handler does... -DaveM
781 printk("PCI%d: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n",
783 (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
784 (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
785 (afsr & SCHIZO_UEAFSR_AID) >> 24UL);
786 printk("PCI%d: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n",
788 (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
789 (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
790 (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
791 (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
792 (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);
793 printk("PCI%d: CE AFAR [%016lx]\n", p->index, afar);
794 printk("PCI%d: CE Secondary errors [", p->index);
796 if (afsr & SCHIZO_CEAFSR_SPIO) {
800 if (afsr & SCHIZO_CEAFSR_SDMA) {
808 schizo_clear_other_err_intr(p, irq);
813 #define SCHIZO_PCI_AFSR 0x2010UL
814 #define SCHIZO_PCI_AFAR 0x2018UL
816 #define SCHIZO_PCIAFSR_PMA 0x8000000000000000UL /* Schizo/Tomatillo */
817 #define SCHIZO_PCIAFSR_PTA 0x4000000000000000UL /* Schizo/Tomatillo */
818 #define SCHIZO_PCIAFSR_PRTRY 0x2000000000000000UL /* Schizo/Tomatillo */
819 #define SCHIZO_PCIAFSR_PPERR 0x1000000000000000UL /* Schizo/Tomatillo */
820 #define SCHIZO_PCIAFSR_PTTO 0x0800000000000000UL /* Schizo/Tomatillo */
821 #define SCHIZO_PCIAFSR_PUNUS 0x0400000000000000UL /* Schizo */
822 #define SCHIZO_PCIAFSR_SMA 0x0200000000000000UL /* Schizo/Tomatillo */
823 #define SCHIZO_PCIAFSR_STA 0x0100000000000000UL /* Schizo/Tomatillo */
824 #define SCHIZO_PCIAFSR_SRTRY 0x0080000000000000UL /* Schizo/Tomatillo */
825 #define SCHIZO_PCIAFSR_SPERR 0x0040000000000000UL /* Schizo/Tomatillo */
826 #define SCHIZO_PCIAFSR_STTO 0x0020000000000000UL /* Schizo/Tomatillo */
827 #define SCHIZO_PCIAFSR_SUNUS 0x0010000000000000UL /* Schizo */
828 #define SCHIZO_PCIAFSR_BMSK 0x000003ff00000000UL /* Schizo/Tomatillo */
829 #define SCHIZO_PCIAFSR_BLK 0x0000000080000000UL /* Schizo/Tomatillo */
830 #define SCHIZO_PCIAFSR_CFG 0x0000000040000000UL /* Schizo/Tomatillo */
831 #define SCHIZO_PCIAFSR_MEM 0x0000000020000000UL /* Schizo/Tomatillo */
832 #define SCHIZO_PCIAFSR_IO 0x0000000010000000UL /* Schizo/Tomatillo */
834 #define SCHIZO_PCI_CTRL (0x2000UL)
835 #define SCHIZO_PCICTRL_BUS_UNUS (1UL << 63UL) /* Safari */
836 #define SCHIZO_PCICTRL_DTO_INT (1UL << 61UL) /* Tomatillo */
837 #define SCHIZO_PCICTRL_ARB_PRIO (0x1ff << 52UL) /* Tomatillo */
838 #define SCHIZO_PCICTRL_ESLCK (1UL << 51UL) /* Safari */
839 #define SCHIZO_PCICTRL_ERRSLOT (7UL << 48UL) /* Safari */
840 #define SCHIZO_PCICTRL_TTO_ERR (1UL << 38UL) /* Safari/Tomatillo */
841 #define SCHIZO_PCICTRL_RTRY_ERR (1UL << 37UL) /* Safari/Tomatillo */
842 #define SCHIZO_PCICTRL_DTO_ERR (1UL << 36UL) /* Safari/Tomatillo */
843 #define SCHIZO_PCICTRL_SBH_ERR (1UL << 35UL) /* Safari */
844 #define SCHIZO_PCICTRL_SERR (1UL << 34UL) /* Safari/Tomatillo */
845 #define SCHIZO_PCICTRL_PCISPD (1UL << 33UL) /* Safari */
846 #define SCHIZO_PCICTRL_MRM_PREF (1UL << 30UL) /* Tomatillo */
847 #define SCHIZO_PCICTRL_RDO_PREF (1UL << 29UL) /* Tomatillo */
848 #define SCHIZO_PCICTRL_RDL_PREF (1UL << 28UL) /* Tomatillo */
849 #define SCHIZO_PCICTRL_PTO (3UL << 24UL) /* Safari/Tomatillo */
850 #define SCHIZO_PCICTRL_PTO_SHIFT 24UL
851 #define SCHIZO_PCICTRL_TRWSW (7UL << 21UL) /* Tomatillo */
852 #define SCHIZO_PCICTRL_F_TGT_A (1UL << 20UL) /* Tomatillo */
853 #define SCHIZO_PCICTRL_S_DTO_INT (1UL << 19UL) /* Safari */
854 #define SCHIZO_PCICTRL_F_TGT_RT (1UL << 19UL) /* Tomatillo */
855 #define SCHIZO_PCICTRL_SBH_INT (1UL << 18UL) /* Safari */
856 #define SCHIZO_PCICTRL_T_DTO_INT (1UL << 18UL) /* Tomatillo */
857 #define SCHIZO_PCICTRL_EEN (1UL << 17UL) /* Safari/Tomatillo */
858 #define SCHIZO_PCICTRL_PARK (1UL << 16UL) /* Safari/Tomatillo */
859 #define SCHIZO_PCICTRL_PCIRST (1UL << 8UL) /* Safari */
860 #define SCHIZO_PCICTRL_ARB_S (0x3fUL << 0UL) /* Safari */
861 #define SCHIZO_PCICTRL_ARB_T (0xffUL << 0UL) /* Tomatillo */
863 static irqreturn_t schizo_pcierr_intr_other(struct pci_pbm_info *pbm)
865 unsigned long csr_reg, csr, csr_error_bits;
866 irqreturn_t ret = IRQ_NONE;
869 csr_reg = pbm->pbm_regs + SCHIZO_PCI_CTRL;
870 csr = schizo_read(csr_reg);
872 csr & (SCHIZO_PCICTRL_BUS_UNUS |
873 SCHIZO_PCICTRL_TTO_ERR |
874 SCHIZO_PCICTRL_RTRY_ERR |
875 SCHIZO_PCICTRL_DTO_ERR |
876 SCHIZO_PCICTRL_SBH_ERR |
877 SCHIZO_PCICTRL_SERR);
878 if (csr_error_bits) {
879 /* Clear the errors. */
880 schizo_write(csr_reg, csr);
883 if (csr_error_bits & SCHIZO_PCICTRL_BUS_UNUS)
884 printk("%s: Bus unusable error asserted.\n",
886 if (csr_error_bits & SCHIZO_PCICTRL_TTO_ERR)
887 printk("%s: PCI TRDY# timeout error asserted.\n",
889 if (csr_error_bits & SCHIZO_PCICTRL_RTRY_ERR)
890 printk("%s: PCI excessive retry error asserted.\n",
892 if (csr_error_bits & SCHIZO_PCICTRL_DTO_ERR)
893 printk("%s: PCI discard timeout error asserted.\n",
895 if (csr_error_bits & SCHIZO_PCICTRL_SBH_ERR)
896 printk("%s: PCI streaming byte hole error asserted.\n",
898 if (csr_error_bits & SCHIZO_PCICTRL_SERR)
899 printk("%s: PCI SERR signal asserted.\n",
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",
911 pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff);
917 static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id, struct pt_regs *regs)
919 struct pci_pbm_info *pbm = dev_id;
920 struct pci_controller_info *p = pbm->parent;
921 unsigned long afsr_reg, afar_reg, base;
922 unsigned long afsr, afar, error_bits;
925 base = pbm->pbm_regs;
927 afsr_reg = base + SCHIZO_PCI_AFSR;
928 afar_reg = base + SCHIZO_PCI_AFAR;
930 /* Latch error status. */
931 afar = schizo_read(afar_reg);
932 afsr = schizo_read(afsr_reg);
934 /* Clear primary/secondary error status bits. */
936 (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
937 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
938 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
939 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
940 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
941 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS);
943 return schizo_pcierr_intr_other(pbm);
944 schizo_write(afsr_reg, error_bits);
947 printk("%s: PCI Error, primary error type[%s]\n",
949 (((error_bits & SCHIZO_PCIAFSR_PMA) ?
951 ((error_bits & SCHIZO_PCIAFSR_PTA) ?
953 ((error_bits & SCHIZO_PCIAFSR_PRTRY) ?
954 "Excessive Retries" :
955 ((error_bits & SCHIZO_PCIAFSR_PPERR) ?
957 ((error_bits & SCHIZO_PCIAFSR_PTTO) ?
959 ((error_bits & SCHIZO_PCIAFSR_PUNUS) ?
960 "Bus Unusable" : "???"))))))));
961 printk("%s: bytemask[%04lx] was_block(%d) space(%s)\n",
963 (afsr & SCHIZO_PCIAFSR_BMSK) >> 32UL,
964 (afsr & SCHIZO_PCIAFSR_BLK) ? 1 : 0,
965 ((afsr & SCHIZO_PCIAFSR_CFG) ?
967 ((afsr & SCHIZO_PCIAFSR_MEM) ?
969 ((afsr & SCHIZO_PCIAFSR_IO) ?
971 printk("%s: PCI AFAR [%016lx]\n",
973 printk("%s: PCI Secondary errors [",
976 if (afsr & SCHIZO_PCIAFSR_SMA) {
978 printk("(Master Abort)");
980 if (afsr & SCHIZO_PCIAFSR_STA) {
982 printk("(Target Abort)");
984 if (afsr & SCHIZO_PCIAFSR_SRTRY) {
986 printk("(Excessive Retries)");
988 if (afsr & SCHIZO_PCIAFSR_SPERR) {
990 printk("(Parity Error)");
992 if (afsr & SCHIZO_PCIAFSR_STTO) {
996 if (afsr & SCHIZO_PCIAFSR_SUNUS) {
998 printk("(Bus Unusable)");
1004 /* For the error types shown, scan PBM's PCI bus for devices
1005 * which have logged that error type.
1008 /* If we see a Target Abort, this could be the result of an
1009 * IOMMU translation error of some sort. It is extremely
1010 * useful to log this information as usually it indicates
1011 * a bug in the IOMMU support code or a PCI device driver.
1013 if (error_bits & (SCHIZO_PCIAFSR_PTA | SCHIZO_PCIAFSR_STA)) {
1014 schizo_check_iommu_error(p, PCI_ERR);
1015 pci_scan_for_target_abort(p, pbm, pbm->pci_bus);
1017 if (error_bits & (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_SMA))
1018 pci_scan_for_master_abort(p, pbm, pbm->pci_bus);
1020 /* For excessive retries, PSYCHO/PBM will abort the device
1021 * and there is no way to specifically check for excessive
1022 * retries in the config space status registers. So what
1023 * we hope is that we'll catch it via the master/target
1027 if (error_bits & (SCHIZO_PCIAFSR_PPERR | SCHIZO_PCIAFSR_SPERR))
1028 pci_scan_for_parity_error(p, pbm, pbm->pci_bus);
1030 schizo_clear_other_err_intr(p, irq);
1035 #define SCHIZO_SAFARI_ERRLOG 0x10018UL
1037 #define SAFARI_ERRLOG_ERROUT 0x8000000000000000UL
1039 #define BUS_ERROR_BADCMD 0x4000000000000000UL /* Schizo/Tomatillo */
1040 #define BUS_ERROR_SSMDIS 0x2000000000000000UL /* Safari */
1041 #define BUS_ERROR_BADMA 0x1000000000000000UL /* Safari */
1042 #define BUS_ERROR_BADMB 0x0800000000000000UL /* Safari */
1043 #define BUS_ERROR_BADMC 0x0400000000000000UL /* Safari */
1044 #define BUS_ERROR_SNOOP_GR 0x0000000000200000UL /* Tomatillo */
1045 #define BUS_ERROR_SNOOP_PCI 0x0000000000100000UL /* Tomatillo */
1046 #define BUS_ERROR_SNOOP_RD 0x0000000000080000UL /* Tomatillo */
1047 #define BUS_ERROR_SNOOP_RDS 0x0000000000020000UL /* Tomatillo */
1048 #define BUS_ERROR_SNOOP_RDSA 0x0000000000010000UL /* Tomatillo */
1049 #define BUS_ERROR_SNOOP_OWN 0x0000000000008000UL /* Tomatillo */
1050 #define BUS_ERROR_SNOOP_RDO 0x0000000000004000UL /* Tomatillo */
1051 #define BUS_ERROR_CPU1PS 0x0000000000002000UL /* Safari */
1052 #define BUS_ERROR_WDATA_PERR 0x0000000000002000UL /* Tomatillo */
1053 #define BUS_ERROR_CPU1PB 0x0000000000001000UL /* Safari */
1054 #define BUS_ERROR_CTRL_PERR 0x0000000000001000UL /* Tomatillo */
1055 #define BUS_ERROR_CPU0PS 0x0000000000000800UL /* Safari */
1056 #define BUS_ERROR_SNOOP_ERR 0x0000000000000800UL /* Tomatillo */
1057 #define BUS_ERROR_CPU0PB 0x0000000000000400UL /* Safari */
1058 #define BUS_ERROR_JBUS_ILL_B 0x0000000000000400UL /* Tomatillo */
1059 #define BUS_ERROR_CIQTO 0x0000000000000200UL /* Safari */
1060 #define BUS_ERROR_LPQTO 0x0000000000000100UL /* Safari */
1061 #define BUS_ERROR_JBUS_ILL_C 0x0000000000000100UL /* Tomatillo */
1062 #define BUS_ERROR_SFPQTO 0x0000000000000080UL /* Safari */
1063 #define BUS_ERROR_UFPQTO 0x0000000000000040UL /* Safari */
1064 #define BUS_ERROR_RD_PERR 0x0000000000000040UL /* Tomatillo */
1065 #define BUS_ERROR_APERR 0x0000000000000020UL /* Safari/Tomatillo */
1066 #define BUS_ERROR_UNMAP 0x0000000000000010UL /* Safari/Tomatillo */
1067 #define BUS_ERROR_BUSERR 0x0000000000000004UL /* Safari/Tomatillo */
1068 #define BUS_ERROR_TIMEOUT 0x0000000000000002UL /* Safari/Tomatillo */
1069 #define BUS_ERROR_ILL 0x0000000000000001UL /* Safari */
1071 /* We only expect UNMAP errors here. The rest of the Safari errors
1072 * are marked fatal and thus cause a system reset.
1074 static irqreturn_t schizo_safarierr_intr(int irq, void *dev_id, struct pt_regs *regs)
1076 struct pci_controller_info *p = dev_id;
1079 errlog = schizo_read(p->pbm_B.controller_regs + SCHIZO_SAFARI_ERRLOG);
1080 schizo_write(p->pbm_B.controller_regs + SCHIZO_SAFARI_ERRLOG,
1081 errlog & ~(SAFARI_ERRLOG_ERROUT));
1083 if (!(errlog & BUS_ERROR_UNMAP)) {
1084 printk("PCI%d: Unexpected Safari/JBUS error interrupt, errlog[%016lx]\n",
1087 schizo_clear_other_err_intr(p, irq);
1091 printk("PCI%d: Safari/JBUS interrupt, UNMAPPED error, interrogating IOMMUs.\n",
1093 schizo_check_iommu_error(p, SAFARI_ERR);
1095 schizo_clear_other_err_intr(p, irq);
1099 /* Nearly identical to PSYCHO equivalents... */
1100 #define SCHIZO_ECC_CTRL 0x10020UL
1101 #define SCHIZO_ECCCTRL_EE 0x8000000000000000UL /* Enable ECC Checking */
1102 #define SCHIZO_ECCCTRL_UE 0x4000000000000000UL /* Enable UE Interrupts */
1103 #define SCHIZO_ECCCTRL_CE 0x2000000000000000UL /* Enable CE INterrupts */
1105 #define SCHIZO_SAFARI_ERRCTRL 0x10008UL
1106 #define SCHIZO_SAFERRCTRL_EN 0x8000000000000000UL
1107 #define SCHIZO_SAFARI_IRQCTRL 0x10010UL
1108 #define SCHIZO_SAFIRQCTRL_EN 0x8000000000000000UL
1110 /* How the Tomatillo IRQs are routed around is pure guesswork here.
1112 * All the Tomatillo devices I see in prtconf dumps seem to have only
1113 * a single PCI bus unit attached to it. It would seem they are seperate
1114 * devices because their PortID (ie. JBUS ID) values are all different
1115 * and thus the registers are mapped to totally different locations.
1117 * However, two Tomatillo's look "similar" in that the only difference
1118 * in their PortID is the lowest bit.
1120 * So if we were to ignore this lower bit, it certainly looks like two
1121 * PCI bus units of the same Tomatillo. I still have not really
1122 * figured this out...
1124 static void tomatillo_register_error_handlers(struct pci_controller_info *p)
1126 struct pci_pbm_info *pbm;
1128 struct ino_bucket *bucket;
1129 u64 tmp, err_mask, err_no_mask;
1131 /* Build IRQs and register handlers. */
1132 pbm = pbm_for_ino(p, SCHIZO_UE_INO);
1133 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_UE_INO);
1134 if (request_irq(irq, schizo_ue_intr,
1135 SA_SHIRQ, "TOMATILLO UE", p) < 0) {
1136 prom_printf("%s: Cannot register UE interrupt.\n",
1140 bucket = __bucket(irq);
1141 tmp = upa_readl(bucket->imap);
1142 upa_writel(tmp, (pbm->pbm_regs +
1143 schizo_imap_offset(SCHIZO_UE_INO) + 4));
1145 pbm = pbm_for_ino(p, SCHIZO_CE_INO);
1146 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_CE_INO);
1147 if (request_irq(irq, schizo_ce_intr,
1148 SA_SHIRQ, "TOMATILLO CE", p) < 0) {
1149 prom_printf("%s: Cannot register CE interrupt.\n",
1153 bucket = __bucket(irq);
1154 tmp = upa_readl(bucket->imap);
1155 upa_writel(tmp, (pbm->pbm_regs +
1156 schizo_imap_offset(SCHIZO_CE_INO) + 4));
1158 pbm = pbm_for_ino(p, SCHIZO_PCIERR_A_INO);
1159 irq = schizo_irq_build(pbm, NULL, ((pbm->portid << 6) |
1160 SCHIZO_PCIERR_A_INO));
1161 if (request_irq(irq, schizo_pcierr_intr,
1162 SA_SHIRQ, "TOMATILLO PCIERR", pbm) < 0) {
1163 prom_printf("%s: Cannot register PBM A PciERR interrupt.\n",
1167 bucket = __bucket(irq);
1168 tmp = upa_readl(bucket->imap);
1169 upa_writel(tmp, (pbm->pbm_regs +
1170 schizo_imap_offset(SCHIZO_PCIERR_A_INO) + 4));
1172 pbm = pbm_for_ino(p, SCHIZO_PCIERR_B_INO);
1173 irq = schizo_irq_build(pbm, NULL, ((pbm->portid << 6) |
1174 SCHIZO_PCIERR_B_INO));
1175 if (request_irq(irq, schizo_pcierr_intr,
1176 SA_SHIRQ, "TOMATILLO PCIERR", pbm) < 0) {
1177 prom_printf("%s: Cannot register PBM B PciERR interrupt.\n",
1181 bucket = __bucket(irq);
1182 tmp = upa_readl(bucket->imap);
1183 upa_writel(tmp, (pbm->pbm_regs +
1184 schizo_imap_offset(SCHIZO_PCIERR_B_INO) + 4));
1186 pbm = pbm_for_ino(p, SCHIZO_SERR_INO);
1187 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_SERR_INO);
1188 if (request_irq(irq, schizo_safarierr_intr,
1189 SA_SHIRQ, "TOMATILLO SERR", p) < 0) {
1190 prom_printf("%s: Cannot register SafariERR interrupt.\n",
1194 bucket = __bucket(irq);
1195 tmp = upa_readl(bucket->imap);
1196 upa_writel(tmp, (pbm->pbm_regs +
1197 schizo_imap_offset(SCHIZO_SERR_INO) + 4));
1199 /* Enable UE and CE interrupts for controller. */
1200 schizo_write(p->pbm_A.controller_regs + SCHIZO_ECC_CTRL,
1201 (SCHIZO_ECCCTRL_EE |
1203 SCHIZO_ECCCTRL_CE));
1205 schizo_write(p->pbm_B.controller_regs + SCHIZO_ECC_CTRL,
1206 (SCHIZO_ECCCTRL_EE |
1208 SCHIZO_ECCCTRL_CE));
1210 /* Enable PCI Error interrupts and clear error
1213 err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
1214 SCHIZO_PCICTRL_TTO_ERR |
1215 SCHIZO_PCICTRL_RTRY_ERR |
1216 SCHIZO_PCICTRL_SERR |
1217 SCHIZO_PCICTRL_EEN);
1219 err_no_mask = SCHIZO_PCICTRL_DTO_ERR;
1221 tmp = schizo_read(p->pbm_A.pbm_regs + SCHIZO_PCI_CTRL);
1223 tmp &= ~err_no_mask;
1224 schizo_write(p->pbm_A.pbm_regs + SCHIZO_PCI_CTRL, tmp);
1226 tmp = schizo_read(p->pbm_B.pbm_regs + SCHIZO_PCI_CTRL);
1228 tmp &= ~err_no_mask;
1229 schizo_write(p->pbm_B.pbm_regs + SCHIZO_PCI_CTRL, tmp);
1231 err_mask = (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
1232 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
1233 SCHIZO_PCIAFSR_PTTO |
1234 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
1235 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
1236 SCHIZO_PCIAFSR_STTO);
1238 schizo_write(p->pbm_A.pbm_regs + SCHIZO_PCI_AFSR, err_mask);
1239 schizo_write(p->pbm_B.pbm_regs + SCHIZO_PCI_AFSR, err_mask);
1241 err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SNOOP_GR |
1242 BUS_ERROR_SNOOP_PCI | BUS_ERROR_SNOOP_RD |
1243 BUS_ERROR_SNOOP_RDS | BUS_ERROR_SNOOP_RDSA |
1244 BUS_ERROR_SNOOP_OWN | BUS_ERROR_SNOOP_RDO |
1245 BUS_ERROR_WDATA_PERR | BUS_ERROR_CTRL_PERR |
1246 BUS_ERROR_SNOOP_ERR | BUS_ERROR_JBUS_ILL_B |
1247 BUS_ERROR_JBUS_ILL_C | BUS_ERROR_RD_PERR |
1248 BUS_ERROR_APERR | BUS_ERROR_UNMAP |
1249 BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT);
1251 schizo_write(p->pbm_A.controller_regs + SCHIZO_SAFARI_ERRCTRL,
1252 (SCHIZO_SAFERRCTRL_EN | err_mask));
1253 schizo_write(p->pbm_B.controller_regs + SCHIZO_SAFARI_ERRCTRL,
1254 (SCHIZO_SAFERRCTRL_EN | err_mask));
1256 schizo_write(p->pbm_A.controller_regs + SCHIZO_SAFARI_IRQCTRL,
1257 (SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP)));
1258 schizo_write(p->pbm_B.controller_regs + SCHIZO_SAFARI_IRQCTRL,
1259 (SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP)));
1262 static void schizo_register_error_handlers(struct pci_controller_info *p)
1264 struct pci_pbm_info *pbm;
1266 struct ino_bucket *bucket;
1267 u64 tmp, err_mask, err_no_mask;
1269 /* Build IRQs and register handlers. */
1270 pbm = pbm_for_ino(p, SCHIZO_UE_INO);
1271 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_UE_INO);
1272 if (request_irq(irq, schizo_ue_intr,
1273 SA_SHIRQ, "SCHIZO UE", p) < 0) {
1274 prom_printf("%s: Cannot register UE interrupt.\n",
1278 bucket = __bucket(irq);
1279 tmp = upa_readl(bucket->imap);
1280 upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_UE_INO) + 4));
1282 pbm = pbm_for_ino(p, SCHIZO_CE_INO);
1283 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_CE_INO);
1284 if (request_irq(irq, schizo_ce_intr,
1285 SA_SHIRQ, "SCHIZO CE", p) < 0) {
1286 prom_printf("%s: Cannot register CE interrupt.\n",
1290 bucket = __bucket(irq);
1291 tmp = upa_readl(bucket->imap);
1292 upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_CE_INO) + 4));
1294 pbm = pbm_for_ino(p, SCHIZO_PCIERR_A_INO);
1295 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_PCIERR_A_INO);
1296 if (request_irq(irq, schizo_pcierr_intr,
1297 SA_SHIRQ, "SCHIZO PCIERR", pbm) < 0) {
1298 prom_printf("%s: Cannot register PBM A PciERR interrupt.\n",
1302 bucket = __bucket(irq);
1303 tmp = upa_readl(bucket->imap);
1304 upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_PCIERR_A_INO) + 4));
1306 pbm = pbm_for_ino(p, SCHIZO_PCIERR_B_INO);
1307 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_PCIERR_B_INO);
1308 if (request_irq(irq, schizo_pcierr_intr,
1309 SA_SHIRQ, "SCHIZO PCIERR", &p->pbm_B) < 0) {
1310 prom_printf("%s: Cannot register PBM B PciERR interrupt.\n",
1314 bucket = __bucket(irq);
1315 tmp = upa_readl(bucket->imap);
1316 upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_PCIERR_B_INO) + 4));
1318 pbm = pbm_for_ino(p, SCHIZO_SERR_INO);
1319 irq = schizo_irq_build(pbm, NULL, (pbm->portid << 6) | SCHIZO_SERR_INO);
1320 if (request_irq(irq, schizo_safarierr_intr,
1321 SA_SHIRQ, "SCHIZO SERR", p) < 0) {
1322 prom_printf("%s: Cannot register SafariERR interrupt.\n",
1326 bucket = __bucket(irq);
1327 tmp = upa_readl(bucket->imap);
1328 upa_writel(tmp, (pbm->pbm_regs + schizo_imap_offset(SCHIZO_SERR_INO) + 4));
1330 /* Enable UE and CE interrupts for controller. */
1331 schizo_write(p->pbm_A.controller_regs + SCHIZO_ECC_CTRL,
1332 (SCHIZO_ECCCTRL_EE |
1334 SCHIZO_ECCCTRL_CE));
1336 err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
1337 SCHIZO_PCICTRL_ESLCK |
1338 SCHIZO_PCICTRL_TTO_ERR |
1339 SCHIZO_PCICTRL_RTRY_ERR |
1340 SCHIZO_PCICTRL_SBH_ERR |
1341 SCHIZO_PCICTRL_SERR |
1342 SCHIZO_PCICTRL_EEN);
1344 err_no_mask = (SCHIZO_PCICTRL_DTO_ERR |
1345 SCHIZO_PCICTRL_SBH_INT);
1347 /* Enable PCI Error interrupts and clear error
1348 * bits for each PBM.
1350 tmp = schizo_read(p->pbm_A.pbm_regs + SCHIZO_PCI_CTRL);
1352 tmp &= ~err_no_mask;
1353 schizo_write(p->pbm_A.pbm_regs + SCHIZO_PCI_CTRL, tmp);
1355 schizo_write(p->pbm_A.pbm_regs + SCHIZO_PCI_AFSR,
1356 (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
1357 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
1358 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
1359 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
1360 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
1361 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS));
1363 tmp = schizo_read(p->pbm_B.pbm_regs + SCHIZO_PCI_CTRL);
1365 tmp &= ~err_no_mask;
1366 schizo_write(p->pbm_B.pbm_regs + SCHIZO_PCI_CTRL, tmp);
1368 schizo_write(p->pbm_B.pbm_regs + SCHIZO_PCI_AFSR,
1369 (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
1370 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
1371 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
1372 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
1373 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
1374 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS));
1376 /* Make all Safari error conditions fatal except unmapped
1377 * errors which we make generate interrupts.
1379 err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SSMDIS |
1380 BUS_ERROR_BADMA | BUS_ERROR_BADMB |
1382 BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
1383 BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB |
1385 BUS_ERROR_LPQTO | BUS_ERROR_SFPQTO |
1386 BUS_ERROR_UFPQTO | BUS_ERROR_APERR |
1387 BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT |
1390 /* XXX Something wrong with some Excalibur systems
1391 * XXX Sun is shipping. The behavior on a 2-cpu
1392 * XXX machine is that both CPU1 parity error bits
1393 * XXX are set and are immediately set again when
1394 * XXX their error status bits are cleared. Just
1395 * XXX ignore them for now. -DaveM
1397 err_mask &= ~(BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
1398 BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB);
1401 schizo_write(p->pbm_A.controller_regs + SCHIZO_SAFARI_ERRCTRL,
1402 (SCHIZO_SAFERRCTRL_EN | err_mask));
1404 schizo_write(p->pbm_A.controller_regs + SCHIZO_SAFARI_IRQCTRL,
1405 (SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP)));
1408 static void pbm_config_busmastering(struct pci_pbm_info *pbm)
1412 /* Set cache-line size to 64 bytes, this is actually
1413 * a nop but I do it for completeness.
1415 addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
1416 0, PCI_CACHE_LINE_SIZE);
1417 pci_config_write8(addr, 64 / sizeof(u32));
1419 /* Set PBM latency timer to 64 PCI clocks. */
1420 addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
1421 0, PCI_LATENCY_TIMER);
1422 pci_config_write8(addr, 64);
1425 static void pbm_scan_bus(struct pci_controller_info *p,
1426 struct pci_pbm_info *pbm)
1428 struct pcidev_cookie *cookie = kzalloc(sizeof(*cookie), GFP_KERNEL);
1431 prom_printf("%s: Critical allocation failure.\n", pbm->name);
1435 /* All we care about is the PBM. */
1438 pbm->pci_bus = pci_scan_bus(pbm->pci_first_busno,
1441 pci_fixup_host_bridge_self(pbm->pci_bus);
1442 pbm->pci_bus->self->sysdata = cookie;
1444 pci_fill_in_pbm_cookies(pbm->pci_bus, pbm, pbm->prom_node);
1445 pci_record_assignments(pbm, pbm->pci_bus);
1446 pci_assign_unassigned(pbm, pbm->pci_bus);
1447 pci_fixup_irq(pbm, pbm->pci_bus);
1448 pci_determine_66mhz_disposition(pbm, pbm->pci_bus);
1449 pci_setup_busmastering(pbm, pbm->pci_bus);
1452 static void __schizo_scan_bus(struct pci_controller_info *p,
1455 if (!p->pbm_B.prom_node || !p->pbm_A.prom_node) {
1456 printk("PCI: Only one PCI bus module of controller found.\n");
1457 printk("PCI: Ignoring entire controller.\n");
1461 pbm_config_busmastering(&p->pbm_B);
1462 p->pbm_B.is_66mhz_capable =
1463 prom_getbool(p->pbm_B.prom_node, "66mhz-capable");
1464 pbm_config_busmastering(&p->pbm_A);
1465 p->pbm_A.is_66mhz_capable =
1466 prom_getbool(p->pbm_A.prom_node, "66mhz-capable");
1467 pbm_scan_bus(p, &p->pbm_B);
1468 pbm_scan_bus(p, &p->pbm_A);
1470 /* After the PCI bus scan is complete, we can register
1471 * the error interrupt handlers.
1473 if (chip_type == PBM_CHIP_TYPE_TOMATILLO)
1474 tomatillo_register_error_handlers(p);
1476 schizo_register_error_handlers(p);
1479 static void schizo_scan_bus(struct pci_controller_info *p)
1481 __schizo_scan_bus(p, PBM_CHIP_TYPE_SCHIZO);
1484 static void tomatillo_scan_bus(struct pci_controller_info *p)
1486 __schizo_scan_bus(p, PBM_CHIP_TYPE_TOMATILLO);
1489 static void schizo_base_address_update(struct pci_dev *pdev, int resource)
1491 struct pcidev_cookie *pcp = pdev->sysdata;
1492 struct pci_pbm_info *pbm = pcp->pbm;
1493 struct resource *res, *root;
1495 int where, size, is_64bit;
1497 res = &pdev->resource[resource];
1499 where = PCI_BASE_ADDRESS_0 + (resource * 4);
1500 } else if (resource == PCI_ROM_RESOURCE) {
1501 where = pdev->rom_base_reg;
1503 /* Somebody might have asked allocation of a non-standard resource */
1508 if (res->flags & IORESOURCE_IO)
1509 root = &pbm->io_space;
1511 root = &pbm->mem_space;
1512 if ((res->flags & PCI_BASE_ADDRESS_MEM_TYPE_MASK)
1513 == PCI_BASE_ADDRESS_MEM_TYPE_64)
1517 size = res->end - res->start;
1518 pci_read_config_dword(pdev, where, ®);
1519 reg = ((reg & size) |
1520 (((u32)(res->start - root->start)) & ~size));
1521 if (resource == PCI_ROM_RESOURCE) {
1522 reg |= PCI_ROM_ADDRESS_ENABLE;
1523 res->flags |= IORESOURCE_ROM_ENABLE;
1525 pci_write_config_dword(pdev, where, reg);
1527 /* This knows that the upper 32-bits of the address
1528 * must be zero. Our PCI common layer enforces this.
1531 pci_write_config_dword(pdev, where + 4, 0);
1534 static void schizo_resource_adjust(struct pci_dev *pdev,
1535 struct resource *res,
1536 struct resource *root)
1538 res->start += root->start;
1539 res->end += root->start;
1542 /* Use ranges property to determine where PCI MEM, I/O, and Config
1543 * space are for this PCI bus module.
1545 static void schizo_determine_mem_io_space(struct pci_pbm_info *pbm)
1547 int i, saw_cfg, saw_mem, saw_io;
1549 saw_cfg = saw_mem = saw_io = 0;
1550 for (i = 0; i < pbm->num_pbm_ranges; i++) {
1551 struct linux_prom_pci_ranges *pr = &pbm->pbm_ranges[i];
1555 type = (pr->child_phys_hi >> 24) & 0x3;
1556 a = (((unsigned long)pr->parent_phys_hi << 32UL) |
1557 ((unsigned long)pr->parent_phys_lo << 0UL));
1561 /* PCI config space, 16MB */
1562 pbm->config_space = a;
1567 /* 16-bit IO space, 16MB */
1568 pbm->io_space.start = a;
1569 pbm->io_space.end = a + ((16UL*1024UL*1024UL) - 1UL);
1570 pbm->io_space.flags = IORESOURCE_IO;
1575 /* 32-bit MEM space, 2GB */
1576 pbm->mem_space.start = a;
1577 pbm->mem_space.end = a + (0x80000000UL - 1UL);
1578 pbm->mem_space.flags = IORESOURCE_MEM;
1587 if (!saw_cfg || !saw_io || !saw_mem) {
1588 prom_printf("%s: Fatal error, missing %s PBM range.\n",
1597 printk("%s: PCI CFG[%lx] IO[%lx] MEM[%lx]\n",
1600 pbm->io_space.start,
1601 pbm->mem_space.start);
1604 static void pbm_register_toplevel_resources(struct pci_controller_info *p,
1605 struct pci_pbm_info *pbm)
1607 pbm->io_space.name = pbm->mem_space.name = pbm->name;
1609 request_resource(&ioport_resource, &pbm->io_space);
1610 request_resource(&iomem_resource, &pbm->mem_space);
1611 pci_register_legacy_regions(&pbm->io_space,
1615 #define SCHIZO_STRBUF_CONTROL (0x02800UL)
1616 #define SCHIZO_STRBUF_FLUSH (0x02808UL)
1617 #define SCHIZO_STRBUF_FSYNC (0x02810UL)
1618 #define SCHIZO_STRBUF_CTXFLUSH (0x02818UL)
1619 #define SCHIZO_STRBUF_CTXMATCH (0x10000UL)
1621 static void schizo_pbm_strbuf_init(struct pci_pbm_info *pbm)
1623 unsigned long base = pbm->pbm_regs;
1626 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
1627 /* TOMATILLO lacks streaming cache. */
1631 /* SCHIZO has context flushing. */
1632 pbm->stc.strbuf_control = base + SCHIZO_STRBUF_CONTROL;
1633 pbm->stc.strbuf_pflush = base + SCHIZO_STRBUF_FLUSH;
1634 pbm->stc.strbuf_fsync = base + SCHIZO_STRBUF_FSYNC;
1635 pbm->stc.strbuf_ctxflush = base + SCHIZO_STRBUF_CTXFLUSH;
1636 pbm->stc.strbuf_ctxmatch_base = base + SCHIZO_STRBUF_CTXMATCH;
1638 pbm->stc.strbuf_flushflag = (volatile unsigned long *)
1639 ((((unsigned long)&pbm->stc.__flushflag_buf[0])
1642 pbm->stc.strbuf_flushflag_pa = (unsigned long)
1643 __pa(pbm->stc.strbuf_flushflag);
1645 /* Turn off LRU locking and diag mode, enable the
1646 * streaming buffer and leave the rerun-disable
1647 * setting however OBP set it.
1649 control = schizo_read(pbm->stc.strbuf_control);
1650 control &= ~(SCHIZO_STRBUF_CTRL_LPTR |
1651 SCHIZO_STRBUF_CTRL_LENAB |
1652 SCHIZO_STRBUF_CTRL_DENAB);
1653 control |= SCHIZO_STRBUF_CTRL_ENAB;
1654 schizo_write(pbm->stc.strbuf_control, control);
1656 pbm->stc.strbuf_enabled = 1;
1659 #define SCHIZO_IOMMU_CONTROL (0x00200UL)
1660 #define SCHIZO_IOMMU_TSBBASE (0x00208UL)
1661 #define SCHIZO_IOMMU_FLUSH (0x00210UL)
1662 #define SCHIZO_IOMMU_CTXFLUSH (0x00218UL)
1664 static void schizo_pbm_iommu_init(struct pci_pbm_info *pbm)
1666 struct pci_iommu *iommu = pbm->iommu;
1667 unsigned long i, tagbase, database;
1668 u32 vdma[2], dma_mask;
1672 err = prom_getproperty(pbm->prom_node, "virtual-dma",
1673 (char *)&vdma[0], sizeof(vdma));
1674 if (err == 0 || err == -1) {
1675 /* No property, use default values. */
1676 vdma[0] = 0xc0000000;
1677 vdma[1] = 0x40000000;
1683 dma_mask |= 0x1fffffff;
1688 dma_mask |= 0x3fffffff;
1693 dma_mask |= 0x7fffffff;
1698 prom_printf("SCHIZO: strange virtual-dma size.\n");
1702 /* Register addresses, SCHIZO has iommu ctx flushing. */
1703 iommu->iommu_control = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL;
1704 iommu->iommu_tsbbase = pbm->pbm_regs + SCHIZO_IOMMU_TSBBASE;
1705 iommu->iommu_flush = pbm->pbm_regs + SCHIZO_IOMMU_FLUSH;
1706 iommu->iommu_ctxflush = pbm->pbm_regs + SCHIZO_IOMMU_CTXFLUSH;
1708 /* We use the main control/status register of SCHIZO as the write
1709 * completion register.
1711 iommu->write_complete_reg = pbm->controller_regs + 0x10000UL;
1714 * Invalidate TLB Entries.
1716 control = schizo_read(iommu->iommu_control);
1717 control |= SCHIZO_IOMMU_CTRL_DENAB;
1718 schizo_write(iommu->iommu_control, control);
1720 tagbase = SCHIZO_IOMMU_TAG, database = SCHIZO_IOMMU_DATA;
1722 for(i = 0; i < 16; i++) {
1723 schizo_write(pbm->pbm_regs + tagbase + (i * 8UL), 0);
1724 schizo_write(pbm->pbm_regs + database + (i * 8UL), 0);
1727 /* Leave diag mode enabled for full-flushing done
1730 pci_iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask);
1732 schizo_write(iommu->iommu_tsbbase, __pa(iommu->page_table));
1734 control = schizo_read(iommu->iommu_control);
1735 control &= ~(SCHIZO_IOMMU_CTRL_TSBSZ | SCHIZO_IOMMU_CTRL_TBWSZ);
1738 control |= SCHIZO_IOMMU_TSBSZ_64K;
1741 control |= SCHIZO_IOMMU_TSBSZ_128K;
1745 control |= SCHIZO_IOMMU_CTRL_ENAB;
1746 schizo_write(iommu->iommu_control, control);
1749 #define SCHIZO_PCI_IRQ_RETRY (0x1a00UL)
1750 #define SCHIZO_IRQ_RETRY_INF 0xffUL
1752 #define SCHIZO_PCI_DIAG (0x2020UL)
1753 #define SCHIZO_PCIDIAG_D_BADECC (1UL << 10UL) /* Disable BAD ECC errors (Schizo) */
1754 #define SCHIZO_PCIDIAG_D_BYPASS (1UL << 9UL) /* Disable MMU bypass mode (Schizo/Tomatillo) */
1755 #define SCHIZO_PCIDIAG_D_TTO (1UL << 8UL) /* Disable TTO errors (Schizo/Tomatillo) */
1756 #define SCHIZO_PCIDIAG_D_RTRYARB (1UL << 7UL) /* Disable retry arbitration (Schizo) */
1757 #define SCHIZO_PCIDIAG_D_RETRY (1UL << 6UL) /* Disable retry limit (Schizo/Tomatillo) */
1758 #define SCHIZO_PCIDIAG_D_INTSYNC (1UL << 5UL) /* Disable interrupt/DMA synch (Schizo/Tomatillo) */
1759 #define SCHIZO_PCIDIAG_I_DMA_PARITY (1UL << 3UL) /* Invert DMA parity (Schizo/Tomatillo) */
1760 #define SCHIZO_PCIDIAG_I_PIOD_PARITY (1UL << 2UL) /* Invert PIO data parity (Schizo/Tomatillo) */
1761 #define SCHIZO_PCIDIAG_I_PIOA_PARITY (1UL << 1UL) /* Invert PIO address parity (Schizo/Tomatillo) */
1763 #define TOMATILLO_PCI_IOC_CSR (0x2248UL)
1764 #define TOMATILLO_IOC_PART_WPENAB 0x0000000000080000UL
1765 #define TOMATILLO_IOC_RDMULT_PENAB 0x0000000000040000UL
1766 #define TOMATILLO_IOC_RDONE_PENAB 0x0000000000020000UL
1767 #define TOMATILLO_IOC_RDLINE_PENAB 0x0000000000010000UL
1768 #define TOMATILLO_IOC_RDMULT_PLEN 0x000000000000c000UL
1769 #define TOMATILLO_IOC_RDMULT_PLEN_SHIFT 14UL
1770 #define TOMATILLO_IOC_RDONE_PLEN 0x0000000000003000UL
1771 #define TOMATILLO_IOC_RDONE_PLEN_SHIFT 12UL
1772 #define TOMATILLO_IOC_RDLINE_PLEN 0x0000000000000c00UL
1773 #define TOMATILLO_IOC_RDLINE_PLEN_SHIFT 10UL
1774 #define TOMATILLO_IOC_PREF_OFF 0x00000000000003f8UL
1775 #define TOMATILLO_IOC_PREF_OFF_SHIFT 3UL
1776 #define TOMATILLO_IOC_RDMULT_CPENAB 0x0000000000000004UL
1777 #define TOMATILLO_IOC_RDONE_CPENAB 0x0000000000000002UL
1778 #define TOMATILLO_IOC_RDLINE_CPENAB 0x0000000000000001UL
1780 #define TOMATILLO_PCI_IOC_TDIAG (0x2250UL)
1781 #define TOMATILLO_PCI_IOC_DDIAG (0x2290UL)
1783 static void schizo_pbm_hw_init(struct pci_pbm_info *pbm)
1787 schizo_write(pbm->pbm_regs + SCHIZO_PCI_IRQ_RETRY, 5);
1789 tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_CTRL);
1791 /* Enable arbiter for all PCI slots. */
1794 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
1795 pbm->chip_version >= 0x2)
1796 tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT;
1798 if (!prom_getbool(pbm->prom_node, "no-bus-parking"))
1799 tmp |= SCHIZO_PCICTRL_PARK;
1801 tmp &= ~SCHIZO_PCICTRL_PARK;
1803 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
1804 pbm->chip_version <= 0x1)
1805 tmp |= SCHIZO_PCICTRL_DTO_INT;
1807 tmp &= ~SCHIZO_PCICTRL_DTO_INT;
1809 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
1810 tmp |= (SCHIZO_PCICTRL_MRM_PREF |
1811 SCHIZO_PCICTRL_RDO_PREF |
1812 SCHIZO_PCICTRL_RDL_PREF);
1814 schizo_write(pbm->pbm_regs + SCHIZO_PCI_CTRL, tmp);
1816 tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_DIAG);
1817 tmp &= ~(SCHIZO_PCIDIAG_D_RTRYARB |
1818 SCHIZO_PCIDIAG_D_RETRY |
1819 SCHIZO_PCIDIAG_D_INTSYNC);
1820 schizo_write(pbm->pbm_regs + SCHIZO_PCI_DIAG, tmp);
1822 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
1823 /* Clear prefetch lengths to workaround a bug in
1826 tmp = (TOMATILLO_IOC_PART_WPENAB |
1827 (1 << TOMATILLO_IOC_PREF_OFF_SHIFT) |
1828 TOMATILLO_IOC_RDMULT_CPENAB |
1829 TOMATILLO_IOC_RDONE_CPENAB |
1830 TOMATILLO_IOC_RDLINE_CPENAB);
1832 schizo_write(pbm->pbm_regs + TOMATILLO_PCI_IOC_CSR,
1837 static void schizo_pbm_init(struct pci_controller_info *p,
1838 int prom_node, u32 portid,
1841 struct linux_prom64_registers pr_regs[4];
1842 unsigned int busrange[2];
1843 struct pci_pbm_info *pbm;
1844 const char *chipset_name;
1849 switch (chip_type) {
1850 case PBM_CHIP_TYPE_TOMATILLO:
1851 chipset_name = "TOMATILLO";
1854 case PBM_CHIP_TYPE_SCHIZO_PLUS:
1855 chipset_name = "SCHIZO+";
1858 case PBM_CHIP_TYPE_SCHIZO:
1860 chipset_name = "SCHIZO";
1864 /* For SCHIZO, three OBP regs:
1865 * 1) PBM controller regs
1866 * 2) Schizo front-end controller regs (same for both PBMs)
1867 * 3) PBM PCI config space
1869 * For TOMATILLO, four OBP regs:
1870 * 1) PBM controller regs
1871 * 2) Tomatillo front-end controller regs
1872 * 3) PBM PCI config space
1875 err = prom_getproperty(prom_node, "reg",
1876 (char *)&pr_regs[0],
1878 if (err == 0 || err == -1) {
1879 prom_printf("%s: Fatal error, no reg property.\n",
1884 is_pbm_a = ((pr_regs[0].phys_addr & 0x00700000) == 0x00600000);
1891 pbm->portid = portid;
1893 pbm->prom_node = prom_node;
1894 pbm->pci_first_slot = 1;
1896 pbm->chip_type = chip_type;
1898 prom_getintdefault(prom_node, "version#", 0);
1899 pbm->chip_revision =
1900 prom_getintdefault(prom_node, "module-revision#", 0);
1902 pbm->pbm_regs = pr_regs[0].phys_addr;
1903 pbm->controller_regs = pr_regs[1].phys_addr - 0x10000UL;
1905 if (chip_type == PBM_CHIP_TYPE_TOMATILLO)
1906 pbm->sync_reg = pr_regs[3].phys_addr + 0x1a18UL;
1909 (chip_type == PBM_CHIP_TYPE_TOMATILLO ?
1910 "TOMATILLO%d PBM%c" :
1913 (pbm == &p->pbm_A ? 'A' : 'B'));
1915 printk("%s: ver[%x:%x], portid %x, "
1916 "cregs[%lx] pregs[%lx]\n",
1918 pbm->chip_version, pbm->chip_revision,
1920 pbm->controller_regs,
1923 schizo_pbm_hw_init(pbm);
1925 prom_getstring(prom_node, "name",
1927 sizeof(pbm->prom_name));
1929 err = prom_getproperty(prom_node, "ranges",
1930 (char *) pbm->pbm_ranges,
1931 sizeof(pbm->pbm_ranges));
1932 if (err == 0 || err == -1) {
1933 prom_printf("%s: Fatal error, no ranges property.\n",
1938 pbm->num_pbm_ranges =
1939 (err / sizeof(struct linux_prom_pci_ranges));
1941 schizo_determine_mem_io_space(pbm);
1942 pbm_register_toplevel_resources(p, pbm);
1944 err = prom_getproperty(prom_node, "interrupt-map",
1945 (char *)pbm->pbm_intmap,
1946 sizeof(pbm->pbm_intmap));
1948 pbm->num_pbm_intmap = (err / sizeof(struct linux_prom_pci_intmap));
1949 err = prom_getproperty(prom_node, "interrupt-map-mask",
1950 (char *)&pbm->pbm_intmask,
1951 sizeof(pbm->pbm_intmask));
1953 prom_printf("%s: Fatal error, no "
1954 "interrupt-map-mask.\n", pbm->name);
1958 pbm->num_pbm_intmap = 0;
1959 memset(&pbm->pbm_intmask, 0, sizeof(pbm->pbm_intmask));
1962 err = prom_getproperty(prom_node, "ino-bitmap",
1963 (char *) &ino_bitmap[0],
1964 sizeof(ino_bitmap));
1965 if (err == 0 || err == -1) {
1966 prom_printf("%s: Fatal error, no ino-bitmap.\n", pbm->name);
1969 pbm->ino_bitmap = (((u64)ino_bitmap[1] << 32UL) |
1970 ((u64)ino_bitmap[0] << 0UL));
1972 err = prom_getproperty(prom_node, "bus-range",
1973 (char *)&busrange[0],
1975 if (err == 0 || err == -1) {
1976 prom_printf("%s: Fatal error, no bus-range.\n", pbm->name);
1979 pbm->pci_first_busno = busrange[0];
1980 pbm->pci_last_busno = busrange[1];
1982 schizo_pbm_iommu_init(pbm);
1983 schizo_pbm_strbuf_init(pbm);
1986 static inline int portid_compare(u32 x, u32 y, int chip_type)
1988 if (chip_type == PBM_CHIP_TYPE_TOMATILLO) {
1996 static void __schizo_init(int node, char *model_name, int chip_type)
1998 struct pci_controller_info *p;
1999 struct pci_iommu *iommu;
2003 portid = prom_getintdefault(node, "portid", 0xff);
2005 for(p = pci_controller_root; p; p = p->next) {
2006 struct pci_pbm_info *pbm;
2008 if (p->pbm_A.prom_node && p->pbm_B.prom_node)
2011 pbm = (p->pbm_A.prom_node ?
2015 if (portid_compare(pbm->portid, portid, chip_type)) {
2016 is_pbm_a = (p->pbm_A.prom_node == 0);
2017 schizo_pbm_init(p, node, portid, chip_type);
2022 p = kzalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
2024 prom_printf("SCHIZO: Fatal memory allocation error.\n");
2028 iommu = kzalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
2030 prom_printf("SCHIZO: Fatal memory allocation error.\n");
2033 p->pbm_A.iommu = iommu;
2035 iommu = kzalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
2037 prom_printf("SCHIZO: Fatal memory allocation error.\n");
2040 p->pbm_B.iommu = iommu;
2042 p->next = pci_controller_root;
2043 pci_controller_root = p;
2045 p->index = pci_num_controllers++;
2046 p->pbms_same_domain = 0;
2047 p->scan_bus = (chip_type == PBM_CHIP_TYPE_TOMATILLO ?
2048 tomatillo_scan_bus :
2050 p->irq_build = schizo_irq_build;
2051 p->base_address_update = schizo_base_address_update;
2052 p->resource_adjust = schizo_resource_adjust;
2053 p->pci_ops = &schizo_ops;
2055 /* Like PSYCHO we have a 2GB aligned area for memory space. */
2056 pci_memspace_mask = 0x7fffffffUL;
2058 schizo_pbm_init(p, node, portid, chip_type);
2061 void schizo_init(int node, char *model_name)
2063 __schizo_init(node, model_name, PBM_CHIP_TYPE_SCHIZO);
2066 void schizo_plus_init(int node, char *model_name)
2068 __schizo_init(node, model_name, PBM_CHIP_TYPE_SCHIZO_PLUS);
2071 void tomatillo_init(int node, char *model_name)
2073 __schizo_init(node, model_name, PBM_CHIP_TYPE_TOMATILLO);