1 /* pci_psycho.c: PSYCHO/U2P specific PCI controller support.
3 * Copyright (C) 1997, 1998, 1999, 2007 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1998, 1999 Eddie C. Dost (ecd@skynet.be)
5 * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
8 #include <linux/kernel.h>
9 #include <linux/types.h>
10 #include <linux/pci.h>
11 #include <linux/init.h>
12 #include <linux/slab.h>
13 #include <linux/interrupt.h>
16 #include <asm/iommu.h>
18 #include <asm/starfire.h>
20 #include <asm/of_device.h>
23 #include "iommu_common.h"
25 /* All PSYCHO registers are 64-bits. The following accessor
26 * routines are how they are accessed. The REG parameter
27 * is a physical address.
29 #define psycho_read(__reg) \
31 __asm__ __volatile__("ldxa [%1] %2, %0" \
33 : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
37 #define psycho_write(__reg, __val) \
38 __asm__ __volatile__("stxa %0, [%1] %2" \
40 : "r" (__val), "r" (__reg), \
41 "i" (ASI_PHYS_BYPASS_EC_E) \
44 /* Misc. PSYCHO PCI controller register offsets and definitions. */
45 #define PSYCHO_CONTROL 0x0010UL
46 #define PSYCHO_CONTROL_IMPL 0xf000000000000000UL /* Implementation of this PSYCHO*/
47 #define PSYCHO_CONTROL_VER 0x0f00000000000000UL /* Version of this PSYCHO */
48 #define PSYCHO_CONTROL_MID 0x00f8000000000000UL /* UPA Module ID of PSYCHO */
49 #define PSYCHO_CONTROL_IGN 0x0007c00000000000UL /* Interrupt Group Number */
50 #define PSYCHO_CONTROL_RESV 0x00003ffffffffff0UL /* Reserved */
51 #define PSYCHO_CONTROL_APCKEN 0x0000000000000008UL /* Address Parity Check Enable */
52 #define PSYCHO_CONTROL_APERR 0x0000000000000004UL /* Incoming System Addr Parerr */
53 #define PSYCHO_CONTROL_IAP 0x0000000000000002UL /* Invert UPA Parity */
54 #define PSYCHO_CONTROL_MODE 0x0000000000000001UL /* PSYCHO clock mode */
55 #define PSYCHO_PCIA_CTRL 0x2000UL
56 #define PSYCHO_PCIB_CTRL 0x4000UL
57 #define PSYCHO_PCICTRL_RESV1 0xfffffff000000000UL /* Reserved */
58 #define PSYCHO_PCICTRL_SBH_ERR 0x0000000800000000UL /* Streaming byte hole error */
59 #define PSYCHO_PCICTRL_SERR 0x0000000400000000UL /* SERR signal asserted */
60 #define PSYCHO_PCICTRL_SPEED 0x0000000200000000UL /* PCI speed (1 is U2P clock) */
61 #define PSYCHO_PCICTRL_RESV2 0x00000001ffc00000UL /* Reserved */
62 #define PSYCHO_PCICTRL_ARB_PARK 0x0000000000200000UL /* PCI arbitration parking */
63 #define PSYCHO_PCICTRL_RESV3 0x00000000001ff800UL /* Reserved */
64 #define PSYCHO_PCICTRL_SBH_INT 0x0000000000000400UL /* Streaming byte hole int enab */
65 #define PSYCHO_PCICTRL_WEN 0x0000000000000200UL /* Power Mgmt Wake Enable */
66 #define PSYCHO_PCICTRL_EEN 0x0000000000000100UL /* PCI Error Interrupt Enable */
67 #define PSYCHO_PCICTRL_RESV4 0x00000000000000c0UL /* Reserved */
68 #define PSYCHO_PCICTRL_AEN 0x000000000000003fUL /* PCI DVMA Arbitration Enable */
70 /* U2P Programmer's Manual, page 13-55, configuration space
73 * 32 24 23 16 15 11 10 8 7 2 1 0
74 * ---------------------------------------------------------
75 * |0 0 0 0 0 0 0 0 1| bus | device | function | reg | 0 0 |
76 * ---------------------------------------------------------
78 #define PSYCHO_CONFIG_BASE(PBM) \
79 ((PBM)->config_space | (1UL << 24))
80 #define PSYCHO_CONFIG_ENCODE(BUS, DEVFN, REG) \
81 (((unsigned long)(BUS) << 16) | \
82 ((unsigned long)(DEVFN) << 8) | \
83 ((unsigned long)(REG)))
85 static void *psycho_pci_config_mkaddr(struct pci_pbm_info *pbm,
93 (PSYCHO_CONFIG_BASE(pbm) |
94 PSYCHO_CONFIG_ENCODE(bus, devfn, where));
97 static int psycho_out_of_range(struct pci_pbm_info *pbm,
101 return ((pbm->parent == 0) ||
102 ((pbm == &pbm->parent->pbm_B) &&
103 (bus == pbm->pci_first_busno) &&
104 PCI_SLOT(devfn) > 8) ||
105 ((pbm == &pbm->parent->pbm_A) &&
106 (bus == pbm->pci_first_busno) &&
107 PCI_SLOT(devfn) > 8));
110 /* PSYCHO PCI configuration space accessors. */
112 static int psycho_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
113 int where, int size, u32 *value)
115 struct pci_pbm_info *pbm = bus_dev->sysdata;
116 unsigned char bus = bus_dev->number;
133 addr = psycho_pci_config_mkaddr(pbm, bus, devfn, where);
135 return PCIBIOS_SUCCESSFUL;
137 if (psycho_out_of_range(pbm, bus, devfn))
138 return PCIBIOS_SUCCESSFUL;
141 pci_config_read8((u8 *)addr, &tmp8);
147 printk("pci_read_config_word: misaligned reg [%x]\n",
149 return PCIBIOS_SUCCESSFUL;
151 pci_config_read16((u16 *)addr, &tmp16);
152 *value = (u32) tmp16;
157 printk("pci_read_config_dword: misaligned reg [%x]\n",
159 return PCIBIOS_SUCCESSFUL;
161 pci_config_read32(addr, value);
164 return PCIBIOS_SUCCESSFUL;
167 static int psycho_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
168 int where, int size, u32 value)
170 struct pci_pbm_info *pbm = bus_dev->sysdata;
171 unsigned char bus = bus_dev->number;
174 addr = psycho_pci_config_mkaddr(pbm, bus, devfn, where);
176 return PCIBIOS_SUCCESSFUL;
178 if (psycho_out_of_range(pbm, bus, devfn))
179 return PCIBIOS_SUCCESSFUL;
183 pci_config_write8((u8 *)addr, value);
188 printk("pci_write_config_word: misaligned reg [%x]\n",
190 return PCIBIOS_SUCCESSFUL;
192 pci_config_write16((u16 *)addr, value);
197 printk("pci_write_config_dword: misaligned reg [%x]\n",
199 return PCIBIOS_SUCCESSFUL;
201 pci_config_write32(addr, value);
203 return PCIBIOS_SUCCESSFUL;
206 static struct pci_ops psycho_ops = {
207 .read = psycho_read_pci_cfg,
208 .write = psycho_write_pci_cfg,
211 /* PSYCHO error handling support. */
212 enum psycho_error_type {
213 UE_ERR, CE_ERR, PCI_ERR
216 /* Helper function of IOMMU error checking, which checks out
217 * the state of the streaming buffers. The IOMMU lock is
218 * held when this is called.
220 * For the PCI error case we know which PBM (and thus which
221 * streaming buffer) caused the error, but for the uncorrectable
222 * error case we do not. So we always check both streaming caches.
224 #define PSYCHO_STRBUF_CONTROL_A 0x2800UL
225 #define PSYCHO_STRBUF_CONTROL_B 0x4800UL
226 #define PSYCHO_STRBUF_CTRL_LPTR 0x00000000000000f0UL /* LRU Lock Pointer */
227 #define PSYCHO_STRBUF_CTRL_LENAB 0x0000000000000008UL /* LRU Lock Enable */
228 #define PSYCHO_STRBUF_CTRL_RRDIS 0x0000000000000004UL /* Rerun Disable */
229 #define PSYCHO_STRBUF_CTRL_DENAB 0x0000000000000002UL /* Diagnostic Mode Enable */
230 #define PSYCHO_STRBUF_CTRL_ENAB 0x0000000000000001UL /* Streaming Buffer Enable */
231 #define PSYCHO_STRBUF_FLUSH_A 0x2808UL
232 #define PSYCHO_STRBUF_FLUSH_B 0x4808UL
233 #define PSYCHO_STRBUF_FSYNC_A 0x2810UL
234 #define PSYCHO_STRBUF_FSYNC_B 0x4810UL
235 #define PSYCHO_STC_DATA_A 0xb000UL
236 #define PSYCHO_STC_DATA_B 0xc000UL
237 #define PSYCHO_STC_ERR_A 0xb400UL
238 #define PSYCHO_STC_ERR_B 0xc400UL
239 #define PSYCHO_STCERR_WRITE 0x0000000000000002UL /* Write Error */
240 #define PSYCHO_STCERR_READ 0x0000000000000001UL /* Read Error */
241 #define PSYCHO_STC_TAG_A 0xb800UL
242 #define PSYCHO_STC_TAG_B 0xc800UL
243 #define PSYCHO_STCTAG_PPN 0x0fffffff00000000UL /* Physical Page Number */
244 #define PSYCHO_STCTAG_VPN 0x00000000ffffe000UL /* Virtual Page Number */
245 #define PSYCHO_STCTAG_VALID 0x0000000000000002UL /* Valid */
246 #define PSYCHO_STCTAG_WRITE 0x0000000000000001UL /* Writable */
247 #define PSYCHO_STC_LINE_A 0xb900UL
248 #define PSYCHO_STC_LINE_B 0xc900UL
249 #define PSYCHO_STCLINE_LINDX 0x0000000001e00000UL /* LRU Index */
250 #define PSYCHO_STCLINE_SPTR 0x00000000001f8000UL /* Dirty Data Start Pointer */
251 #define PSYCHO_STCLINE_LADDR 0x0000000000007f00UL /* Line Address */
252 #define PSYCHO_STCLINE_EPTR 0x00000000000000fcUL /* Dirty Data End Pointer */
253 #define PSYCHO_STCLINE_VALID 0x0000000000000002UL /* Valid */
254 #define PSYCHO_STCLINE_FOFN 0x0000000000000001UL /* Fetch Outstanding / Flush Necessary */
256 static DEFINE_SPINLOCK(stc_buf_lock);
257 static unsigned long stc_error_buf[128];
258 static unsigned long stc_tag_buf[16];
259 static unsigned long stc_line_buf[16];
261 static void __psycho_check_one_stc(struct pci_controller_info *p,
262 struct pci_pbm_info *pbm,
265 struct pci_strbuf *strbuf = &pbm->stc;
266 unsigned long regbase = p->pbm_A.controller_regs;
267 unsigned long err_base, tag_base, line_base;
272 err_base = regbase + PSYCHO_STC_ERR_A;
273 tag_base = regbase + PSYCHO_STC_TAG_A;
274 line_base = regbase + PSYCHO_STC_LINE_A;
276 err_base = regbase + PSYCHO_STC_ERR_B;
277 tag_base = regbase + PSYCHO_STC_TAG_B;
278 line_base = regbase + PSYCHO_STC_LINE_B;
281 spin_lock(&stc_buf_lock);
283 /* This is __REALLY__ dangerous. When we put the
284 * streaming buffer into diagnostic mode to probe
285 * it's tags and error status, we _must_ clear all
286 * of the line tag valid bits before re-enabling
287 * the streaming buffer. If any dirty data lives
288 * in the STC when we do this, we will end up
289 * invalidating it before it has a chance to reach
292 control = psycho_read(strbuf->strbuf_control);
293 psycho_write(strbuf->strbuf_control,
294 (control | PSYCHO_STRBUF_CTRL_DENAB));
295 for (i = 0; i < 128; i++) {
298 val = psycho_read(err_base + (i * 8UL));
299 psycho_write(err_base + (i * 8UL), 0UL);
300 stc_error_buf[i] = val;
302 for (i = 0; i < 16; i++) {
303 stc_tag_buf[i] = psycho_read(tag_base + (i * 8UL));
304 stc_line_buf[i] = psycho_read(line_base + (i * 8UL));
305 psycho_write(tag_base + (i * 8UL), 0UL);
306 psycho_write(line_base + (i * 8UL), 0UL);
309 /* OK, state is logged, exit diagnostic mode. */
310 psycho_write(strbuf->strbuf_control, control);
312 for (i = 0; i < 16; i++) {
313 int j, saw_error, first, last;
318 for (j = first; j < last; j++) {
319 unsigned long errval = stc_error_buf[j];
322 printk("PSYCHO%d(PBM%c): STC_ERR(%d)[wr(%d)rd(%d)]\n",
324 (is_pbm_a ? 'A' : 'B'),
326 (errval & PSYCHO_STCERR_WRITE) ? 1 : 0,
327 (errval & PSYCHO_STCERR_READ) ? 1 : 0);
330 if (saw_error != 0) {
331 unsigned long tagval = stc_tag_buf[i];
332 unsigned long lineval = stc_line_buf[i];
333 printk("PSYCHO%d(PBM%c): STC_TAG(%d)[PA(%016lx)VA(%08lx)V(%d)W(%d)]\n",
335 (is_pbm_a ? 'A' : 'B'),
337 ((tagval & PSYCHO_STCTAG_PPN) >> 19UL),
338 (tagval & PSYCHO_STCTAG_VPN),
339 ((tagval & PSYCHO_STCTAG_VALID) ? 1 : 0),
340 ((tagval & PSYCHO_STCTAG_WRITE) ? 1 : 0));
341 printk("PSYCHO%d(PBM%c): STC_LINE(%d)[LIDX(%lx)SP(%lx)LADDR(%lx)EP(%lx)"
344 (is_pbm_a ? 'A' : 'B'),
346 ((lineval & PSYCHO_STCLINE_LINDX) >> 21UL),
347 ((lineval & PSYCHO_STCLINE_SPTR) >> 15UL),
348 ((lineval & PSYCHO_STCLINE_LADDR) >> 8UL),
349 ((lineval & PSYCHO_STCLINE_EPTR) >> 2UL),
350 ((lineval & PSYCHO_STCLINE_VALID) ? 1 : 0),
351 ((lineval & PSYCHO_STCLINE_FOFN) ? 1 : 0));
355 spin_unlock(&stc_buf_lock);
358 static void __psycho_check_stc_error(struct pci_controller_info *p,
361 enum psycho_error_type type)
363 struct pci_pbm_info *pbm;
366 if (pbm->stc.strbuf_enabled)
367 __psycho_check_one_stc(p, pbm, 1);
370 if (pbm->stc.strbuf_enabled)
371 __psycho_check_one_stc(p, pbm, 0);
374 /* When an Uncorrectable Error or a PCI Error happens, we
375 * interrogate the IOMMU state to see if it is the cause.
377 #define PSYCHO_IOMMU_CONTROL 0x0200UL
378 #define PSYCHO_IOMMU_CTRL_RESV 0xfffffffff9000000UL /* Reserved */
379 #define PSYCHO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL /* Translation Error Status */
380 #define PSYCHO_IOMMU_CTRL_XLTEERR 0x0000000001000000UL /* Translation Error encountered */
381 #define PSYCHO_IOMMU_CTRL_LCKEN 0x0000000000800000UL /* Enable translation locking */
382 #define PSYCHO_IOMMU_CTRL_LCKPTR 0x0000000000780000UL /* Translation lock pointer */
383 #define PSYCHO_IOMMU_CTRL_TSBSZ 0x0000000000070000UL /* TSB Size */
384 #define PSYCHO_IOMMU_TSBSZ_1K 0x0000000000000000UL /* TSB Table 1024 8-byte entries */
385 #define PSYCHO_IOMMU_TSBSZ_2K 0x0000000000010000UL /* TSB Table 2048 8-byte entries */
386 #define PSYCHO_IOMMU_TSBSZ_4K 0x0000000000020000UL /* TSB Table 4096 8-byte entries */
387 #define PSYCHO_IOMMU_TSBSZ_8K 0x0000000000030000UL /* TSB Table 8192 8-byte entries */
388 #define PSYCHO_IOMMU_TSBSZ_16K 0x0000000000040000UL /* TSB Table 16k 8-byte entries */
389 #define PSYCHO_IOMMU_TSBSZ_32K 0x0000000000050000UL /* TSB Table 32k 8-byte entries */
390 #define PSYCHO_IOMMU_TSBSZ_64K 0x0000000000060000UL /* TSB Table 64k 8-byte entries */
391 #define PSYCHO_IOMMU_TSBSZ_128K 0x0000000000070000UL /* TSB Table 128k 8-byte entries */
392 #define PSYCHO_IOMMU_CTRL_RESV2 0x000000000000fff8UL /* Reserved */
393 #define PSYCHO_IOMMU_CTRL_TBWSZ 0x0000000000000004UL /* Assumed page size, 0=8k 1=64k */
394 #define PSYCHO_IOMMU_CTRL_DENAB 0x0000000000000002UL /* Diagnostic mode enable */
395 #define PSYCHO_IOMMU_CTRL_ENAB 0x0000000000000001UL /* IOMMU Enable */
396 #define PSYCHO_IOMMU_TSBBASE 0x0208UL
397 #define PSYCHO_IOMMU_FLUSH 0x0210UL
398 #define PSYCHO_IOMMU_TAG 0xa580UL
399 #define PSYCHO_IOMMU_TAG_ERRSTS (0x3UL << 23UL)
400 #define PSYCHO_IOMMU_TAG_ERR (0x1UL << 22UL)
401 #define PSYCHO_IOMMU_TAG_WRITE (0x1UL << 21UL)
402 #define PSYCHO_IOMMU_TAG_STREAM (0x1UL << 20UL)
403 #define PSYCHO_IOMMU_TAG_SIZE (0x1UL << 19UL)
404 #define PSYCHO_IOMMU_TAG_VPAGE 0x7ffffUL
405 #define PSYCHO_IOMMU_DATA 0xa600UL
406 #define PSYCHO_IOMMU_DATA_VALID (1UL << 30UL)
407 #define PSYCHO_IOMMU_DATA_CACHE (1UL << 28UL)
408 #define PSYCHO_IOMMU_DATA_PPAGE 0xfffffffUL
409 static void psycho_check_iommu_error(struct pci_controller_info *p,
412 enum psycho_error_type type)
414 struct pci_iommu *iommu = p->pbm_A.iommu;
415 unsigned long iommu_tag[16];
416 unsigned long iommu_data[16];
421 spin_lock_irqsave(&iommu->lock, flags);
422 control = psycho_read(iommu->iommu_control);
423 if (control & PSYCHO_IOMMU_CTRL_XLTEERR) {
426 /* Clear the error encountered bit. */
427 control &= ~PSYCHO_IOMMU_CTRL_XLTEERR;
428 psycho_write(iommu->iommu_control, control);
430 switch((control & PSYCHO_IOMMU_CTRL_XLTESTAT) >> 25UL) {
432 type_string = "Protection Error";
435 type_string = "Invalid Error";
438 type_string = "TimeOut Error";
442 type_string = "ECC Error";
445 printk("PSYCHO%d: IOMMU Error, type[%s]\n",
446 p->index, type_string);
448 /* Put the IOMMU into diagnostic mode and probe
449 * it's TLB for entries with error status.
451 * It is very possible for another DVMA to occur
452 * while we do this probe, and corrupt the system
453 * further. But we are so screwed at this point
454 * that we are likely to crash hard anyways, so
455 * get as much diagnostic information to the
458 psycho_write(iommu->iommu_control,
459 control | PSYCHO_IOMMU_CTRL_DENAB);
460 for (i = 0; i < 16; i++) {
461 unsigned long base = p->pbm_A.controller_regs;
464 psycho_read(base + PSYCHO_IOMMU_TAG + (i * 8UL));
466 psycho_read(base + PSYCHO_IOMMU_DATA + (i * 8UL));
468 /* Now clear out the entry. */
469 psycho_write(base + PSYCHO_IOMMU_TAG + (i * 8UL), 0);
470 psycho_write(base + PSYCHO_IOMMU_DATA + (i * 8UL), 0);
473 /* Leave diagnostic mode. */
474 psycho_write(iommu->iommu_control, control);
476 for (i = 0; i < 16; i++) {
477 unsigned long tag, data;
480 if (!(tag & PSYCHO_IOMMU_TAG_ERR))
483 data = iommu_data[i];
484 switch((tag & PSYCHO_IOMMU_TAG_ERRSTS) >> 23UL) {
486 type_string = "Protection Error";
489 type_string = "Invalid Error";
492 type_string = "TimeOut Error";
496 type_string = "ECC Error";
499 printk("PSYCHO%d: IOMMU TAG(%d)[error(%s) wr(%d) str(%d) sz(%dK) vpg(%08lx)]\n",
500 p->index, i, type_string,
501 ((tag & PSYCHO_IOMMU_TAG_WRITE) ? 1 : 0),
502 ((tag & PSYCHO_IOMMU_TAG_STREAM) ? 1 : 0),
503 ((tag & PSYCHO_IOMMU_TAG_SIZE) ? 64 : 8),
504 (tag & PSYCHO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT);
505 printk("PSYCHO%d: IOMMU DATA(%d)[valid(%d) cache(%d) ppg(%016lx)]\n",
507 ((data & PSYCHO_IOMMU_DATA_VALID) ? 1 : 0),
508 ((data & PSYCHO_IOMMU_DATA_CACHE) ? 1 : 0),
509 (data & PSYCHO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT);
512 __psycho_check_stc_error(p, afsr, afar, type);
513 spin_unlock_irqrestore(&iommu->lock, flags);
516 /* Uncorrectable Errors. Cause of the error and the address are
517 * recorded in the UE_AFSR and UE_AFAR of PSYCHO. They are errors
518 * relating to UPA interface transactions.
520 #define PSYCHO_UE_AFSR 0x0030UL
521 #define PSYCHO_UEAFSR_PPIO 0x8000000000000000UL /* Primary PIO is cause */
522 #define PSYCHO_UEAFSR_PDRD 0x4000000000000000UL /* Primary DVMA read is cause */
523 #define PSYCHO_UEAFSR_PDWR 0x2000000000000000UL /* Primary DVMA write is cause */
524 #define PSYCHO_UEAFSR_SPIO 0x1000000000000000UL /* Secondary PIO is cause */
525 #define PSYCHO_UEAFSR_SDRD 0x0800000000000000UL /* Secondary DVMA read is cause */
526 #define PSYCHO_UEAFSR_SDWR 0x0400000000000000UL /* Secondary DVMA write is cause*/
527 #define PSYCHO_UEAFSR_RESV1 0x03ff000000000000UL /* Reserved */
528 #define PSYCHO_UEAFSR_BMSK 0x0000ffff00000000UL /* Bytemask of failed transfer */
529 #define PSYCHO_UEAFSR_DOFF 0x00000000e0000000UL /* Doubleword Offset */
530 #define PSYCHO_UEAFSR_MID 0x000000001f000000UL /* UPA MID causing the fault */
531 #define PSYCHO_UEAFSR_BLK 0x0000000000800000UL /* Trans was block operation */
532 #define PSYCHO_UEAFSR_RESV2 0x00000000007fffffUL /* Reserved */
533 #define PSYCHO_UE_AFAR 0x0038UL
535 static irqreturn_t psycho_ue_intr(int irq, void *dev_id)
537 struct pci_controller_info *p = dev_id;
538 unsigned long afsr_reg = p->pbm_A.controller_regs + PSYCHO_UE_AFSR;
539 unsigned long afar_reg = p->pbm_A.controller_regs + PSYCHO_UE_AFAR;
540 unsigned long afsr, afar, error_bits;
543 /* Latch uncorrectable error status. */
544 afar = psycho_read(afar_reg);
545 afsr = psycho_read(afsr_reg);
547 /* Clear the primary/secondary error status bits. */
549 (PSYCHO_UEAFSR_PPIO | PSYCHO_UEAFSR_PDRD | PSYCHO_UEAFSR_PDWR |
550 PSYCHO_UEAFSR_SPIO | PSYCHO_UEAFSR_SDRD | PSYCHO_UEAFSR_SDWR);
553 psycho_write(afsr_reg, error_bits);
556 printk("PSYCHO%d: Uncorrectable Error, primary error type[%s]\n",
558 (((error_bits & PSYCHO_UEAFSR_PPIO) ?
560 ((error_bits & PSYCHO_UEAFSR_PDRD) ?
562 ((error_bits & PSYCHO_UEAFSR_PDWR) ?
563 "DMA Write" : "???")))));
564 printk("PSYCHO%d: bytemask[%04lx] dword_offset[%lx] UPA_MID[%02lx] was_block(%d)\n",
566 (afsr & PSYCHO_UEAFSR_BMSK) >> 32UL,
567 (afsr & PSYCHO_UEAFSR_DOFF) >> 29UL,
568 (afsr & PSYCHO_UEAFSR_MID) >> 24UL,
569 ((afsr & PSYCHO_UEAFSR_BLK) ? 1 : 0));
570 printk("PSYCHO%d: UE AFAR [%016lx]\n", p->index, afar);
571 printk("PSYCHO%d: UE Secondary errors [", p->index);
573 if (afsr & PSYCHO_UEAFSR_SPIO) {
577 if (afsr & PSYCHO_UEAFSR_SDRD) {
579 printk("(DMA Read)");
581 if (afsr & PSYCHO_UEAFSR_SDWR) {
583 printk("(DMA Write)");
589 /* Interrogate IOMMU for error status. */
590 psycho_check_iommu_error(p, afsr, afar, UE_ERR);
595 /* Correctable Errors. */
596 #define PSYCHO_CE_AFSR 0x0040UL
597 #define PSYCHO_CEAFSR_PPIO 0x8000000000000000UL /* Primary PIO is cause */
598 #define PSYCHO_CEAFSR_PDRD 0x4000000000000000UL /* Primary DVMA read is cause */
599 #define PSYCHO_CEAFSR_PDWR 0x2000000000000000UL /* Primary DVMA write is cause */
600 #define PSYCHO_CEAFSR_SPIO 0x1000000000000000UL /* Secondary PIO is cause */
601 #define PSYCHO_CEAFSR_SDRD 0x0800000000000000UL /* Secondary DVMA read is cause */
602 #define PSYCHO_CEAFSR_SDWR 0x0400000000000000UL /* Secondary DVMA write is cause*/
603 #define PSYCHO_CEAFSR_RESV1 0x0300000000000000UL /* Reserved */
604 #define PSYCHO_CEAFSR_ESYND 0x00ff000000000000UL /* Syndrome Bits */
605 #define PSYCHO_CEAFSR_BMSK 0x0000ffff00000000UL /* Bytemask of failed transfer */
606 #define PSYCHO_CEAFSR_DOFF 0x00000000e0000000UL /* Double Offset */
607 #define PSYCHO_CEAFSR_MID 0x000000001f000000UL /* UPA MID causing the fault */
608 #define PSYCHO_CEAFSR_BLK 0x0000000000800000UL /* Trans was block operation */
609 #define PSYCHO_CEAFSR_RESV2 0x00000000007fffffUL /* Reserved */
610 #define PSYCHO_CE_AFAR 0x0040UL
612 static irqreturn_t psycho_ce_intr(int irq, void *dev_id)
614 struct pci_controller_info *p = dev_id;
615 unsigned long afsr_reg = p->pbm_A.controller_regs + PSYCHO_CE_AFSR;
616 unsigned long afar_reg = p->pbm_A.controller_regs + PSYCHO_CE_AFAR;
617 unsigned long afsr, afar, error_bits;
620 /* Latch error status. */
621 afar = psycho_read(afar_reg);
622 afsr = psycho_read(afsr_reg);
624 /* Clear primary/secondary error status bits. */
626 (PSYCHO_CEAFSR_PPIO | PSYCHO_CEAFSR_PDRD | PSYCHO_CEAFSR_PDWR |
627 PSYCHO_CEAFSR_SPIO | PSYCHO_CEAFSR_SDRD | PSYCHO_CEAFSR_SDWR);
630 psycho_write(afsr_reg, error_bits);
633 printk("PSYCHO%d: Correctable Error, primary error type[%s]\n",
635 (((error_bits & PSYCHO_CEAFSR_PPIO) ?
637 ((error_bits & PSYCHO_CEAFSR_PDRD) ?
639 ((error_bits & PSYCHO_CEAFSR_PDWR) ?
640 "DMA Write" : "???")))));
642 /* XXX Use syndrome and afar to print out module string just like
643 * XXX UDB CE trap handler does... -DaveM
645 printk("PSYCHO%d: syndrome[%02lx] bytemask[%04lx] dword_offset[%lx] "
646 "UPA_MID[%02lx] was_block(%d)\n",
648 (afsr & PSYCHO_CEAFSR_ESYND) >> 48UL,
649 (afsr & PSYCHO_CEAFSR_BMSK) >> 32UL,
650 (afsr & PSYCHO_CEAFSR_DOFF) >> 29UL,
651 (afsr & PSYCHO_CEAFSR_MID) >> 24UL,
652 ((afsr & PSYCHO_CEAFSR_BLK) ? 1 : 0));
653 printk("PSYCHO%d: CE AFAR [%016lx]\n", p->index, afar);
654 printk("PSYCHO%d: CE Secondary errors [", p->index);
656 if (afsr & PSYCHO_CEAFSR_SPIO) {
660 if (afsr & PSYCHO_CEAFSR_SDRD) {
662 printk("(DMA Read)");
664 if (afsr & PSYCHO_CEAFSR_SDWR) {
666 printk("(DMA Write)");
675 /* PCI Errors. They are signalled by the PCI bus module since they
676 * are associated with a specific bus segment.
678 #define PSYCHO_PCI_AFSR_A 0x2010UL
679 #define PSYCHO_PCI_AFSR_B 0x4010UL
680 #define PSYCHO_PCIAFSR_PMA 0x8000000000000000UL /* Primary Master Abort Error */
681 #define PSYCHO_PCIAFSR_PTA 0x4000000000000000UL /* Primary Target Abort Error */
682 #define PSYCHO_PCIAFSR_PRTRY 0x2000000000000000UL /* Primary Excessive Retries */
683 #define PSYCHO_PCIAFSR_PPERR 0x1000000000000000UL /* Primary Parity Error */
684 #define PSYCHO_PCIAFSR_SMA 0x0800000000000000UL /* Secondary Master Abort Error */
685 #define PSYCHO_PCIAFSR_STA 0x0400000000000000UL /* Secondary Target Abort Error */
686 #define PSYCHO_PCIAFSR_SRTRY 0x0200000000000000UL /* Secondary Excessive Retries */
687 #define PSYCHO_PCIAFSR_SPERR 0x0100000000000000UL /* Secondary Parity Error */
688 #define PSYCHO_PCIAFSR_RESV1 0x00ff000000000000UL /* Reserved */
689 #define PSYCHO_PCIAFSR_BMSK 0x0000ffff00000000UL /* Bytemask of failed transfer */
690 #define PSYCHO_PCIAFSR_BLK 0x0000000080000000UL /* Trans was block operation */
691 #define PSYCHO_PCIAFSR_RESV2 0x0000000040000000UL /* Reserved */
692 #define PSYCHO_PCIAFSR_MID 0x000000003e000000UL /* MID causing the error */
693 #define PSYCHO_PCIAFSR_RESV3 0x0000000001ffffffUL /* Reserved */
694 #define PSYCHO_PCI_AFAR_A 0x2018UL
695 #define PSYCHO_PCI_AFAR_B 0x4018UL
697 static irqreturn_t psycho_pcierr_intr_other(struct pci_pbm_info *pbm, int is_pbm_a)
699 unsigned long csr_reg, csr, csr_error_bits;
700 irqreturn_t ret = IRQ_NONE;
704 csr_reg = pbm->controller_regs + PSYCHO_PCIA_CTRL;
706 csr_reg = pbm->controller_regs + PSYCHO_PCIB_CTRL;
708 csr = psycho_read(csr_reg);
710 csr & (PSYCHO_PCICTRL_SBH_ERR | PSYCHO_PCICTRL_SERR);
711 if (csr_error_bits) {
712 /* Clear the errors. */
713 psycho_write(csr_reg, csr);
716 if (csr_error_bits & PSYCHO_PCICTRL_SBH_ERR)
717 printk("%s: PCI streaming byte hole error asserted.\n",
719 if (csr_error_bits & PSYCHO_PCICTRL_SERR)
720 printk("%s: PCI SERR signal asserted.\n", pbm->name);
723 pci_read_config_word(pbm->pci_bus->self, PCI_STATUS, &stat);
724 if (stat & (PCI_STATUS_PARITY |
725 PCI_STATUS_SIG_TARGET_ABORT |
726 PCI_STATUS_REC_TARGET_ABORT |
727 PCI_STATUS_REC_MASTER_ABORT |
728 PCI_STATUS_SIG_SYSTEM_ERROR)) {
729 printk("%s: PCI bus error, PCI_STATUS[%04x]\n",
731 pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff);
737 static irqreturn_t psycho_pcierr_intr(int irq, void *dev_id)
739 struct pci_pbm_info *pbm = dev_id;
740 struct pci_controller_info *p = pbm->parent;
741 unsigned long afsr_reg, afar_reg;
742 unsigned long afsr, afar, error_bits;
743 int is_pbm_a, reported;
745 is_pbm_a = (pbm == &pbm->parent->pbm_A);
747 afsr_reg = p->pbm_A.controller_regs + PSYCHO_PCI_AFSR_A;
748 afar_reg = p->pbm_A.controller_regs + PSYCHO_PCI_AFAR_A;
750 afsr_reg = p->pbm_A.controller_regs + PSYCHO_PCI_AFSR_B;
751 afar_reg = p->pbm_A.controller_regs + PSYCHO_PCI_AFAR_B;
754 /* Latch error status. */
755 afar = psycho_read(afar_reg);
756 afsr = psycho_read(afsr_reg);
758 /* Clear primary/secondary error status bits. */
760 (PSYCHO_PCIAFSR_PMA | PSYCHO_PCIAFSR_PTA |
761 PSYCHO_PCIAFSR_PRTRY | PSYCHO_PCIAFSR_PPERR |
762 PSYCHO_PCIAFSR_SMA | PSYCHO_PCIAFSR_STA |
763 PSYCHO_PCIAFSR_SRTRY | PSYCHO_PCIAFSR_SPERR);
765 return psycho_pcierr_intr_other(pbm, is_pbm_a);
766 psycho_write(afsr_reg, error_bits);
769 printk("PSYCHO%d(PBM%c): PCI Error, primary error type[%s]\n",
770 p->index, (is_pbm_a ? 'A' : 'B'),
771 (((error_bits & PSYCHO_PCIAFSR_PMA) ?
773 ((error_bits & PSYCHO_PCIAFSR_PTA) ?
775 ((error_bits & PSYCHO_PCIAFSR_PRTRY) ?
776 "Excessive Retries" :
777 ((error_bits & PSYCHO_PCIAFSR_PPERR) ?
778 "Parity Error" : "???"))))));
779 printk("PSYCHO%d(PBM%c): bytemask[%04lx] UPA_MID[%02lx] was_block(%d)\n",
780 p->index, (is_pbm_a ? 'A' : 'B'),
781 (afsr & PSYCHO_PCIAFSR_BMSK) >> 32UL,
782 (afsr & PSYCHO_PCIAFSR_MID) >> 25UL,
783 (afsr & PSYCHO_PCIAFSR_BLK) ? 1 : 0);
784 printk("PSYCHO%d(PBM%c): PCI AFAR [%016lx]\n",
785 p->index, (is_pbm_a ? 'A' : 'B'), afar);
786 printk("PSYCHO%d(PBM%c): PCI Secondary errors [",
787 p->index, (is_pbm_a ? 'A' : 'B'));
789 if (afsr & PSYCHO_PCIAFSR_SMA) {
791 printk("(Master Abort)");
793 if (afsr & PSYCHO_PCIAFSR_STA) {
795 printk("(Target Abort)");
797 if (afsr & PSYCHO_PCIAFSR_SRTRY) {
799 printk("(Excessive Retries)");
801 if (afsr & PSYCHO_PCIAFSR_SPERR) {
803 printk("(Parity Error)");
809 /* For the error types shown, scan PBM's PCI bus for devices
810 * which have logged that error type.
813 /* If we see a Target Abort, this could be the result of an
814 * IOMMU translation error of some sort. It is extremely
815 * useful to log this information as usually it indicates
816 * a bug in the IOMMU support code or a PCI device driver.
818 if (error_bits & (PSYCHO_PCIAFSR_PTA | PSYCHO_PCIAFSR_STA)) {
819 psycho_check_iommu_error(p, afsr, afar, PCI_ERR);
820 pci_scan_for_target_abort(p, pbm, pbm->pci_bus);
822 if (error_bits & (PSYCHO_PCIAFSR_PMA | PSYCHO_PCIAFSR_SMA))
823 pci_scan_for_master_abort(p, pbm, pbm->pci_bus);
825 /* For excessive retries, PSYCHO/PBM will abort the device
826 * and there is no way to specifically check for excessive
827 * retries in the config space status registers. So what
828 * we hope is that we'll catch it via the master/target
832 if (error_bits & (PSYCHO_PCIAFSR_PPERR | PSYCHO_PCIAFSR_SPERR))
833 pci_scan_for_parity_error(p, pbm, pbm->pci_bus);
838 /* XXX What about PowerFail/PowerManagement??? -DaveM */
839 #define PSYCHO_ECC_CTRL 0x0020
840 #define PSYCHO_ECCCTRL_EE 0x8000000000000000UL /* Enable ECC Checking */
841 #define PSYCHO_ECCCTRL_UE 0x4000000000000000UL /* Enable UE Interrupts */
842 #define PSYCHO_ECCCTRL_CE 0x2000000000000000UL /* Enable CE INterrupts */
843 static void psycho_register_error_handlers(struct pci_controller_info *p)
845 struct pci_pbm_info *pbm = &p->pbm_A; /* arbitrary */
846 struct of_device *op = of_find_device_by_node(pbm->prom_node);
847 unsigned long base = p->pbm_A.controller_regs;
853 /* Psycho interrupt property order is:
854 * 0: PCIERR PBM B INO
859 * 5: PCIERR PBM A INO
862 if (op->num_irqs < 6)
865 request_irq(op->irqs[1], psycho_ue_intr, IRQF_SHARED, "PSYCHO UE", p);
866 request_irq(op->irqs[2], psycho_ce_intr, IRQF_SHARED, "PSYCHO CE", p);
867 request_irq(op->irqs[5], psycho_pcierr_intr, IRQF_SHARED,
868 "PSYCHO PCIERR-A", &p->pbm_A);
869 request_irq(op->irqs[0], psycho_pcierr_intr, IRQF_SHARED,
870 "PSYCHO PCIERR-B", &p->pbm_B);
872 /* Enable UE and CE interrupts for controller. */
873 psycho_write(base + PSYCHO_ECC_CTRL,
878 /* Enable PCI Error interrupts and clear error
881 tmp = psycho_read(base + PSYCHO_PCIA_CTRL);
882 tmp |= (PSYCHO_PCICTRL_SERR |
883 PSYCHO_PCICTRL_SBH_ERR |
885 tmp &= ~(PSYCHO_PCICTRL_SBH_INT);
886 psycho_write(base + PSYCHO_PCIA_CTRL, tmp);
888 tmp = psycho_read(base + PSYCHO_PCIB_CTRL);
889 tmp |= (PSYCHO_PCICTRL_SERR |
890 PSYCHO_PCICTRL_SBH_ERR |
892 tmp &= ~(PSYCHO_PCICTRL_SBH_INT);
893 psycho_write(base + PSYCHO_PCIB_CTRL, tmp);
896 /* PSYCHO boot time probing and initialization. */
897 static void pbm_config_busmastering(struct pci_pbm_info *pbm)
901 /* Set cache-line size to 64 bytes, this is actually
902 * a nop but I do it for completeness.
904 addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno,
905 0, PCI_CACHE_LINE_SIZE);
906 pci_config_write8(addr, 64 / sizeof(u32));
908 /* Set PBM latency timer to 64 PCI clocks. */
909 addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno,
910 0, PCI_LATENCY_TIMER);
911 pci_config_write8(addr, 64);
914 static void pbm_scan_bus(struct pci_controller_info *p,
915 struct pci_pbm_info *pbm)
917 pbm->pci_bus = pci_scan_one_pbm(pbm);
920 static void psycho_scan_bus(struct pci_controller_info *p)
922 pbm_config_busmastering(&p->pbm_B);
923 p->pbm_B.is_66mhz_capable = 0;
924 pbm_config_busmastering(&p->pbm_A);
925 p->pbm_A.is_66mhz_capable = 1;
926 pbm_scan_bus(p, &p->pbm_B);
927 pbm_scan_bus(p, &p->pbm_A);
929 /* After the PCI bus scan is complete, we can register
930 * the error interrupt handlers.
932 psycho_register_error_handlers(p);
935 static void psycho_iommu_init(struct pci_controller_info *p)
937 struct pci_iommu *iommu = p->pbm_A.iommu;
941 /* Register addresses. */
942 iommu->iommu_control = p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL;
943 iommu->iommu_tsbbase = p->pbm_A.controller_regs + PSYCHO_IOMMU_TSBBASE;
944 iommu->iommu_flush = p->pbm_A.controller_regs + PSYCHO_IOMMU_FLUSH;
945 /* PSYCHO's IOMMU lacks ctx flushing. */
946 iommu->iommu_ctxflush = 0;
948 /* We use the main control register of PSYCHO as the write
949 * completion register.
951 iommu->write_complete_reg = p->pbm_A.controller_regs + PSYCHO_CONTROL;
954 * Invalidate TLB Entries.
956 control = psycho_read(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL);
957 control |= PSYCHO_IOMMU_CTRL_DENAB;
958 psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL, control);
959 for(i = 0; i < 16; i++) {
960 psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_TAG + (i * 8UL), 0);
961 psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_DATA + (i * 8UL), 0);
964 /* Leave diag mode enabled for full-flushing done
967 pci_iommu_table_init(iommu, IO_TSB_SIZE, 0xc0000000, 0xffffffff);
969 psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_TSBBASE,
970 __pa(iommu->page_table));
972 control = psycho_read(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL);
973 control &= ~(PSYCHO_IOMMU_CTRL_TSBSZ | PSYCHO_IOMMU_CTRL_TBWSZ);
974 control |= (PSYCHO_IOMMU_TSBSZ_128K | PSYCHO_IOMMU_CTRL_ENAB);
975 psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL, control);
977 /* If necessary, hook us up for starfire IRQ translations. */
978 if (this_is_starfire)
979 starfire_hookup(p->pbm_A.portid);
982 #define PSYCHO_IRQ_RETRY 0x1a00UL
983 #define PSYCHO_PCIA_DIAG 0x2020UL
984 #define PSYCHO_PCIB_DIAG 0x4020UL
985 #define PSYCHO_PCIDIAG_RESV 0xffffffffffffff80UL /* Reserved */
986 #define PSYCHO_PCIDIAG_DRETRY 0x0000000000000040UL /* Disable retry limit */
987 #define PSYCHO_PCIDIAG_DISYNC 0x0000000000000020UL /* Disable DMA wr / irq sync */
988 #define PSYCHO_PCIDIAG_DDWSYNC 0x0000000000000010UL /* Disable DMA wr / PIO rd sync */
989 #define PSYCHO_PCIDIAG_IDDPAR 0x0000000000000008UL /* Invert DMA data parity */
990 #define PSYCHO_PCIDIAG_IPDPAR 0x0000000000000004UL /* Invert PIO data parity */
991 #define PSYCHO_PCIDIAG_IPAPAR 0x0000000000000002UL /* Invert PIO address parity */
992 #define PSYCHO_PCIDIAG_LPBACK 0x0000000000000001UL /* Enable loopback mode */
994 static void psycho_controller_hwinit(struct pci_controller_info *p)
998 psycho_write(p->pbm_A.controller_regs + PSYCHO_IRQ_RETRY, 5);
1000 /* Enable arbiter for all PCI slots. */
1001 tmp = psycho_read(p->pbm_A.controller_regs + PSYCHO_PCIA_CTRL);
1002 tmp |= PSYCHO_PCICTRL_AEN;
1003 psycho_write(p->pbm_A.controller_regs + PSYCHO_PCIA_CTRL, tmp);
1005 tmp = psycho_read(p->pbm_A.controller_regs + PSYCHO_PCIB_CTRL);
1006 tmp |= PSYCHO_PCICTRL_AEN;
1007 psycho_write(p->pbm_A.controller_regs + PSYCHO_PCIB_CTRL, tmp);
1009 /* Disable DMA write / PIO read synchronization on
1010 * both PCI bus segments.
1011 * [ U2P Erratum 1243770, STP2223BGA data sheet ]
1013 tmp = psycho_read(p->pbm_A.controller_regs + PSYCHO_PCIA_DIAG);
1014 tmp |= PSYCHO_PCIDIAG_DDWSYNC;
1015 psycho_write(p->pbm_A.controller_regs + PSYCHO_PCIA_DIAG, tmp);
1017 tmp = psycho_read(p->pbm_A.controller_regs + PSYCHO_PCIB_DIAG);
1018 tmp |= PSYCHO_PCIDIAG_DDWSYNC;
1019 psycho_write(p->pbm_A.controller_regs + PSYCHO_PCIB_DIAG, tmp);
1022 static void psycho_pbm_strbuf_init(struct pci_controller_info *p,
1023 struct pci_pbm_info *pbm,
1026 unsigned long base = pbm->controller_regs;
1030 pbm->stc.strbuf_control = base + PSYCHO_STRBUF_CONTROL_A;
1031 pbm->stc.strbuf_pflush = base + PSYCHO_STRBUF_FLUSH_A;
1032 pbm->stc.strbuf_fsync = base + PSYCHO_STRBUF_FSYNC_A;
1034 pbm->stc.strbuf_control = base + PSYCHO_STRBUF_CONTROL_B;
1035 pbm->stc.strbuf_pflush = base + PSYCHO_STRBUF_FLUSH_B;
1036 pbm->stc.strbuf_fsync = base + PSYCHO_STRBUF_FSYNC_B;
1038 /* PSYCHO's streaming buffer lacks ctx flushing. */
1039 pbm->stc.strbuf_ctxflush = 0;
1040 pbm->stc.strbuf_ctxmatch_base = 0;
1042 pbm->stc.strbuf_flushflag = (volatile unsigned long *)
1043 ((((unsigned long)&pbm->stc.__flushflag_buf[0])
1046 pbm->stc.strbuf_flushflag_pa = (unsigned long)
1047 __pa(pbm->stc.strbuf_flushflag);
1049 /* Enable the streaming buffer. We have to be careful
1050 * just in case OBP left it with LRU locking enabled.
1052 * It is possible to control if PBM will be rerun on
1053 * line misses. Currently I just retain whatever setting
1054 * OBP left us with. All checks so far show it having
1057 #undef PSYCHO_STRBUF_RERUN_ENABLE
1058 #undef PSYCHO_STRBUF_RERUN_DISABLE
1059 control = psycho_read(pbm->stc.strbuf_control);
1060 control |= PSYCHO_STRBUF_CTRL_ENAB;
1061 control &= ~(PSYCHO_STRBUF_CTRL_LENAB | PSYCHO_STRBUF_CTRL_LPTR);
1062 #ifdef PSYCHO_STRBUF_RERUN_ENABLE
1063 control &= ~(PSYCHO_STRBUF_CTRL_RRDIS);
1065 #ifdef PSYCHO_STRBUF_RERUN_DISABLE
1066 control |= PSYCHO_STRBUF_CTRL_RRDIS;
1069 psycho_write(pbm->stc.strbuf_control, control);
1071 pbm->stc.strbuf_enabled = 1;
1074 #define PSYCHO_IOSPACE_A 0x002000000UL
1075 #define PSYCHO_IOSPACE_B 0x002010000UL
1076 #define PSYCHO_IOSPACE_SIZE 0x00000ffffUL
1077 #define PSYCHO_MEMSPACE_A 0x100000000UL
1078 #define PSYCHO_MEMSPACE_B 0x180000000UL
1079 #define PSYCHO_MEMSPACE_SIZE 0x07fffffffUL
1081 static void psycho_pbm_init(struct pci_controller_info *p,
1082 struct device_node *dp, int is_pbm_a)
1084 unsigned int *busrange;
1085 struct property *prop;
1086 struct pci_pbm_info *pbm;
1093 pbm->chip_type = PBM_CHIP_TYPE_PSYCHO;
1094 pbm->chip_version = 0;
1095 prop = of_find_property(dp, "version#", NULL);
1097 pbm->chip_version = *(int *) prop->value;
1098 pbm->chip_revision = 0;
1099 prop = of_find_property(dp, "module-revision#", NULL);
1101 pbm->chip_revision = *(int *) prop->value;
1103 pci_determine_mem_io_space(pbm);
1106 pbm->prom_node = dp;
1107 pbm->name = dp->full_name;
1109 printk("%s: PSYCHO PCI Bus Module ver[%x:%x]\n",
1111 pbm->chip_version, pbm->chip_revision);
1113 prop = of_find_property(dp, "bus-range", NULL);
1114 busrange = prop->value;
1115 pbm->pci_first_busno = busrange[0];
1116 pbm->pci_last_busno = busrange[1];
1118 psycho_pbm_strbuf_init(p, pbm, is_pbm_a);
1121 #define PSYCHO_CONFIGSPACE 0x001000000UL
1123 void psycho_init(struct device_node *dp, char *model_name)
1125 struct linux_prom64_registers *pr_regs;
1126 struct pci_controller_info *p;
1127 struct pci_iommu *iommu;
1128 struct property *prop;
1133 prop = of_find_property(dp, "upa-portid", NULL);
1135 upa_portid = *(u32 *) prop->value;
1137 for(p = pci_controller_root; p; p = p->next) {
1138 if (p->pbm_A.portid == upa_portid) {
1139 is_pbm_a = (p->pbm_A.prom_node == NULL);
1140 psycho_pbm_init(p, dp, is_pbm_a);
1145 p = kzalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
1147 prom_printf("PSYCHO: Fatal memory allocation error.\n");
1150 iommu = kzalloc(sizeof(struct pci_iommu), GFP_ATOMIC);
1152 prom_printf("PSYCHO: Fatal memory allocation error.\n");
1155 p->pbm_A.iommu = p->pbm_B.iommu = iommu;
1157 p->next = pci_controller_root;
1158 pci_controller_root = p;
1160 p->pbm_A.portid = upa_portid;
1161 p->pbm_B.portid = upa_portid;
1162 p->index = pci_num_controllers++;
1163 p->scan_bus = psycho_scan_bus;
1164 p->pci_ops = &psycho_ops;
1166 prop = of_find_property(dp, "reg", NULL);
1167 pr_regs = prop->value;
1169 p->pbm_A.controller_regs = pr_regs[2].phys_addr;
1170 p->pbm_B.controller_regs = pr_regs[2].phys_addr;
1172 p->pbm_A.config_space = p->pbm_B.config_space =
1173 (pr_regs[2].phys_addr + PSYCHO_CONFIGSPACE);
1176 * Psycho's PCI MEM space is mapped to a 2GB aligned area, so
1177 * we need to adjust our MEM space mask.
1179 pci_memspace_mask = 0x7fffffffUL;
1181 psycho_controller_hwinit(p);
1183 psycho_iommu_init(p);
1185 is_pbm_a = ((pr_regs[0].phys_addr & 0x6000) == 0x2000);
1186 psycho_pbm_init(p, dp, is_pbm_a);