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ia64: on UP percpu variables are not small memory model
[wrt350n-kernel.git] / arch / sparc64 / kernel / pci_schizo.c
blobe306093623222a645900c559ad3286f5e90071df
1 /* pci_schizo.c: SCHIZO/TOMATILLO specific PCI controller support.
2 *
3 * Copyright (C) 2001, 2002, 2003, 2007 David S. Miller (davem@davemloft.net)
4 */
5
6 #include <linux/kernel.h>
7 #include <linux/types.h>
8 #include <linux/pci.h>
9 #include <linux/init.h>
10 #include <linux/slab.h>
11 #include <linux/interrupt.h>
12
13 #include <asm/iommu.h>
14 #include <asm/irq.h>
15 #include <asm/upa.h>
16 #include <asm/pstate.h>
17 #include <asm/prom.h>
18 #include <asm/of_device.h>
19 #include <asm/oplib.h>
20
21 #include "pci_impl.h"
22 #include "iommu_common.h"
23
24 /* All SCHIZO registers are 64-bits. The following accessor
25 * routines are how they are accessed. The REG parameter
26 * is a physical address.
27 */
28 #define schizo_read(__reg) \
29 ({ u64 __ret; \
30 __asm__ __volatile__("ldxa [%1] %2, %0" \
31 : "=r" (__ret) \
32 : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
33 : "memory"); \
34 __ret; \
35 })
36 #define schizo_write(__reg, __val) \
37 __asm__ __volatile__("stxa %0, [%1] %2" \
38 : /* no outputs */ \
39 : "r" (__val), "r" (__reg), \
40 "i" (ASI_PHYS_BYPASS_EC_E) \
41 : "memory")
42
43 /* This is a convention that at least Excalibur and Merlin
44 * follow. I suppose the SCHIZO used in Starcat and friends
45 * will do similar.
46 *
47 * The only way I could see this changing is if the newlink
48 * block requires more space in Schizo's address space than
49 * they predicted, thus requiring an address space reorg when
50 * the newer Schizo is taped out.
51 */
52
53 /* Streaming buffer control register. */
54 #define SCHIZO_STRBUF_CTRL_LPTR 0x00000000000000f0UL /* LRU Lock Pointer */
55 #define SCHIZO_STRBUF_CTRL_LENAB 0x0000000000000008UL /* LRU Lock Enable */
56 #define SCHIZO_STRBUF_CTRL_RRDIS 0x0000000000000004UL /* Rerun Disable */
57 #define SCHIZO_STRBUF_CTRL_DENAB 0x0000000000000002UL /* Diagnostic Mode Enable */
58 #define SCHIZO_STRBUF_CTRL_ENAB 0x0000000000000001UL /* Streaming Buffer Enable */
59
60 /* IOMMU control register. */
61 #define SCHIZO_IOMMU_CTRL_RESV 0xfffffffff9000000UL /* Reserved */
62 #define SCHIZO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL /* Translation Error Status */
63 #define SCHIZO_IOMMU_CTRL_XLTEERR 0x0000000001000000UL /* Translation Error encountered */
64 #define SCHIZO_IOMMU_CTRL_LCKEN 0x0000000000800000UL /* Enable translation locking */
65 #define SCHIZO_IOMMU_CTRL_LCKPTR 0x0000000000780000UL /* Translation lock pointer */
66 #define SCHIZO_IOMMU_CTRL_TSBSZ 0x0000000000070000UL /* TSB Size */
67 #define SCHIZO_IOMMU_TSBSZ_1K 0x0000000000000000UL /* TSB Table 1024 8-byte entries */
68 #define SCHIZO_IOMMU_TSBSZ_2K 0x0000000000010000UL /* TSB Table 2048 8-byte entries */
69 #define SCHIZO_IOMMU_TSBSZ_4K 0x0000000000020000UL /* TSB Table 4096 8-byte entries */
70 #define SCHIZO_IOMMU_TSBSZ_8K 0x0000000000030000UL /* TSB Table 8192 8-byte entries */
71 #define SCHIZO_IOMMU_TSBSZ_16K 0x0000000000040000UL /* TSB Table 16k 8-byte entries */
72 #define SCHIZO_IOMMU_TSBSZ_32K 0x0000000000050000UL /* TSB Table 32k 8-byte entries */
73 #define SCHIZO_IOMMU_TSBSZ_64K 0x0000000000060000UL /* TSB Table 64k 8-byte entries */
74 #define SCHIZO_IOMMU_TSBSZ_128K 0x0000000000070000UL /* TSB Table 128k 8-byte entries */
75 #define SCHIZO_IOMMU_CTRL_RESV2 0x000000000000fff8UL /* Reserved */
76 #define SCHIZO_IOMMU_CTRL_TBWSZ 0x0000000000000004UL /* Assumed page size, 0=8k 1=64k */
77 #define SCHIZO_IOMMU_CTRL_DENAB 0x0000000000000002UL /* Diagnostic mode enable */
78 #define SCHIZO_IOMMU_CTRL_ENAB 0x0000000000000001UL /* IOMMU Enable */
79
80 /* Schizo config space address format is nearly identical to
81 * that of PSYCHO:
82 *
83 * 32 24 23 16 15 11 10 8 7 2 1 0
84 * ---------------------------------------------------------
85 * |0 0 0 0 0 0 0 0 0| bus | device | function | reg | 0 0 |
86 * ---------------------------------------------------------
87 */
88 #define SCHIZO_CONFIG_BASE(PBM) ((PBM)->config_space)
89 #define SCHIZO_CONFIG_ENCODE(BUS, DEVFN, REG) \
90 (((unsigned long)(BUS) << 16) | \
91 ((unsigned long)(DEVFN) << 8) | \
92 ((unsigned long)(REG)))
93
94 static void *schizo_pci_config_mkaddr(struct pci_pbm_info *pbm,
95 unsigned char bus,
96 unsigned int devfn,
97 int where)
98 {
99 if (!pbm)
100 return NULL;
101 bus -= pbm->pci_first_busno;
102 return (void *)
103 (SCHIZO_CONFIG_BASE(pbm) |
104 SCHIZO_CONFIG_ENCODE(bus, devfn, where));
105 }
106
107 /* SCHIZO error handling support. */
108 enum schizo_error_type {
109 UE_ERR, CE_ERR, PCI_ERR, SAFARI_ERR
110 };
111
112 static DEFINE_SPINLOCK(stc_buf_lock);
113 static unsigned long stc_error_buf[128];
114 static unsigned long stc_tag_buf[16];
115 static unsigned long stc_line_buf[16];
116
117 #define SCHIZO_UE_INO 0x30 /* Uncorrectable ECC error */
118 #define SCHIZO_CE_INO 0x31 /* Correctable ECC error */
119 #define SCHIZO_PCIERR_A_INO 0x32 /* PBM A PCI bus error */
120 #define SCHIZO_PCIERR_B_INO 0x33 /* PBM B PCI bus error */
121 #define SCHIZO_SERR_INO 0x34 /* Safari interface error */
122
123 #define SCHIZO_STC_ERR 0xb800UL /* --> 0xba00 */
124 #define SCHIZO_STC_TAG 0xba00UL /* --> 0xba80 */
125 #define SCHIZO_STC_LINE 0xbb00UL /* --> 0xbb80 */
126
127 #define SCHIZO_STCERR_WRITE 0x2UL
128 #define SCHIZO_STCERR_READ 0x1UL
129
130 #define SCHIZO_STCTAG_PPN 0x3fffffff00000000UL
131 #define SCHIZO_STCTAG_VPN 0x00000000ffffe000UL
132 #define SCHIZO_STCTAG_VALID 0x8000000000000000UL
133 #define SCHIZO_STCTAG_READ 0x4000000000000000UL
134
135 #define SCHIZO_STCLINE_LINDX 0x0000000007800000UL
136 #define SCHIZO_STCLINE_SPTR 0x000000000007e000UL
137 #define SCHIZO_STCLINE_LADDR 0x0000000000001fc0UL
138 #define SCHIZO_STCLINE_EPTR 0x000000000000003fUL
139 #define SCHIZO_STCLINE_VALID 0x0000000000600000UL
140 #define SCHIZO_STCLINE_FOFN 0x0000000000180000UL
141
142 static void __schizo_check_stc_error_pbm(struct pci_pbm_info *pbm,
143 enum schizo_error_type type)
144 {
145 struct strbuf *strbuf = &pbm->stc;
146 unsigned long regbase = pbm->pbm_regs;
147 unsigned long err_base, tag_base, line_base;
148 u64 control;
149 int i;
150
151 err_base = regbase + SCHIZO_STC_ERR;
152 tag_base = regbase + SCHIZO_STC_TAG;
153 line_base = regbase + SCHIZO_STC_LINE;
154
155 spin_lock(&stc_buf_lock);
156
157 /* This is __REALLY__ dangerous. When we put the
158 * streaming buffer into diagnostic mode to probe
159 * it's tags and error status, we _must_ clear all
160 * of the line tag valid bits before re-enabling
161 * the streaming buffer. If any dirty data lives
162 * in the STC when we do this, we will end up
163 * invalidating it before it has a chance to reach
164 * main memory.
165 */
166 control = schizo_read(strbuf->strbuf_control);
167 schizo_write(strbuf->strbuf_control,
168 (control | SCHIZO_STRBUF_CTRL_DENAB));
169 for (i = 0; i < 128; i++) {
170 unsigned long val;
171
172 val = schizo_read(err_base + (i * 8UL));
173 schizo_write(err_base + (i * 8UL), 0UL);
174 stc_error_buf[i] = val;
175 }
176 for (i = 0; i < 16; i++) {
177 stc_tag_buf[i] = schizo_read(tag_base + (i * 8UL));
178 stc_line_buf[i] = schizo_read(line_base + (i * 8UL));
179 schizo_write(tag_base + (i * 8UL), 0UL);
180 schizo_write(line_base + (i * 8UL), 0UL);
181 }
182
183 /* OK, state is logged, exit diagnostic mode. */
184 schizo_write(strbuf->strbuf_control, control);
185
186 for (i = 0; i < 16; i++) {
187 int j, saw_error, first, last;
188
189 saw_error = 0;
190 first = i * 8;
191 last = first + 8;
192 for (j = first; j < last; j++) {
193 unsigned long errval = stc_error_buf[j];
194 if (errval != 0) {
195 saw_error++;
196 printk("%s: STC_ERR(%d)[wr(%d)rd(%d)]\n",
197 pbm->name,
198 j,
199 (errval & SCHIZO_STCERR_WRITE) ? 1 : 0,
200 (errval & SCHIZO_STCERR_READ) ? 1 : 0);
201 }
202 }
203 if (saw_error != 0) {
204 unsigned long tagval = stc_tag_buf[i];
205 unsigned long lineval = stc_line_buf[i];
206 printk("%s: STC_TAG(%d)[PA(%016lx)VA(%08lx)V(%d)R(%d)]\n",
207 pbm->name,
208 i,
209 ((tagval & SCHIZO_STCTAG_PPN) >> 19UL),
210 (tagval & SCHIZO_STCTAG_VPN),
211 ((tagval & SCHIZO_STCTAG_VALID) ? 1 : 0),
212 ((tagval & SCHIZO_STCTAG_READ) ? 1 : 0));
213
214 /* XXX Should spit out per-bank error information... -DaveM */
215 printk("%s: STC_LINE(%d)[LIDX(%lx)SP(%lx)LADDR(%lx)EP(%lx)"
216 "V(%d)FOFN(%d)]\n",
217 pbm->name,
218 i,
219 ((lineval & SCHIZO_STCLINE_LINDX) >> 23UL),
220 ((lineval & SCHIZO_STCLINE_SPTR) >> 13UL),
221 ((lineval & SCHIZO_STCLINE_LADDR) >> 6UL),
222 ((lineval & SCHIZO_STCLINE_EPTR) >> 0UL),
223 ((lineval & SCHIZO_STCLINE_VALID) ? 1 : 0),
224 ((lineval & SCHIZO_STCLINE_FOFN) ? 1 : 0));
225 }
226 }
227
228 spin_unlock(&stc_buf_lock);
229 }
230
231 /* IOMMU is per-PBM in Schizo, so interrogate both for anonymous
232 * controller level errors.
233 */
234
235 #define SCHIZO_IOMMU_TAG 0xa580UL
236 #define SCHIZO_IOMMU_DATA 0xa600UL
237
238 #define SCHIZO_IOMMU_TAG_CTXT 0x0000001ffe000000UL
239 #define SCHIZO_IOMMU_TAG_ERRSTS 0x0000000001800000UL
240 #define SCHIZO_IOMMU_TAG_ERR 0x0000000000400000UL
241 #define SCHIZO_IOMMU_TAG_WRITE 0x0000000000200000UL
242 #define SCHIZO_IOMMU_TAG_STREAM 0x0000000000100000UL
243 #define SCHIZO_IOMMU_TAG_SIZE 0x0000000000080000UL
244 #define SCHIZO_IOMMU_TAG_VPAGE 0x000000000007ffffUL
245
246 #define SCHIZO_IOMMU_DATA_VALID 0x0000000100000000UL
247 #define SCHIZO_IOMMU_DATA_CACHE 0x0000000040000000UL
248 #define SCHIZO_IOMMU_DATA_PPAGE 0x000000003fffffffUL
249
250 static void schizo_check_iommu_error_pbm(struct pci_pbm_info *pbm,
251 enum schizo_error_type type)
252 {
253 struct iommu *iommu = pbm->iommu;
254 unsigned long iommu_tag[16];
255 unsigned long iommu_data[16];
256 unsigned long flags;
257 u64 control;
258 int i;
259
260 spin_lock_irqsave(&iommu->lock, flags);
261 control = schizo_read(iommu->iommu_control);
262 if (control & SCHIZO_IOMMU_CTRL_XLTEERR) {
263 unsigned long base;
264 char *type_string;
265
266 /* Clear the error encountered bit. */
267 control &= ~SCHIZO_IOMMU_CTRL_XLTEERR;
268 schizo_write(iommu->iommu_control, control);
269
270 switch((control & SCHIZO_IOMMU_CTRL_XLTESTAT) >> 25UL) {
271 case 0:
272 type_string = "Protection Error";
273 break;
274 case 1:
275 type_string = "Invalid Error";
276 break;
277 case 2:
278 type_string = "TimeOut Error";
279 break;
280 case 3:
281 default:
282 type_string = "ECC Error";
283 break;
284 };
285 printk("%s: IOMMU Error, type[%s]\n",
286 pbm->name, type_string);
287
288 /* Put the IOMMU into diagnostic mode and probe
289 * it's TLB for entries with error status.
290 *
291 * It is very possible for another DVMA to occur
292 * while we do this probe, and corrupt the system
293 * further. But we are so screwed at this point
294 * that we are likely to crash hard anyways, so
295 * get as much diagnostic information to the
296 * console as we can.
297 */
298 schizo_write(iommu->iommu_control,
299 control | SCHIZO_IOMMU_CTRL_DENAB);
300
301 base = pbm->pbm_regs;
302
303 for (i = 0; i < 16; i++) {
304 iommu_tag[i] =
305 schizo_read(base + SCHIZO_IOMMU_TAG + (i * 8UL));
306 iommu_data[i] =
307 schizo_read(base + SCHIZO_IOMMU_DATA + (i * 8UL));
308
309 /* Now clear out the entry. */
310 schizo_write(base + SCHIZO_IOMMU_TAG + (i * 8UL), 0);
311 schizo_write(base + SCHIZO_IOMMU_DATA + (i * 8UL), 0);
312 }
313
314 /* Leave diagnostic mode. */
315 schizo_write(iommu->iommu_control, control);
316
317 for (i = 0; i < 16; i++) {
318 unsigned long tag, data;
319
320 tag = iommu_tag[i];
321 if (!(tag & SCHIZO_IOMMU_TAG_ERR))
322 continue;
323
324 data = iommu_data[i];
325 switch((tag & SCHIZO_IOMMU_TAG_ERRSTS) >> 23UL) {
326 case 0:
327 type_string = "Protection Error";
328 break;
329 case 1:
330 type_string = "Invalid Error";
331 break;
332 case 2:
333 type_string = "TimeOut Error";
334 break;
335 case 3:
336 default:
337 type_string = "ECC Error";
338 break;
339 };
340 printk("%s: IOMMU TAG(%d)[error(%s) ctx(%x) wr(%d) str(%d) "
341 "sz(%dK) vpg(%08lx)]\n",
342 pbm->name, i, type_string,
343 (int)((tag & SCHIZO_IOMMU_TAG_CTXT) >> 25UL),
344 ((tag & SCHIZO_IOMMU_TAG_WRITE) ? 1 : 0),
345 ((tag & SCHIZO_IOMMU_TAG_STREAM) ? 1 : 0),
346 ((tag & SCHIZO_IOMMU_TAG_SIZE) ? 64 : 8),
347 (tag & SCHIZO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT);
348 printk("%s: IOMMU DATA(%d)[valid(%d) cache(%d) ppg(%016lx)]\n",
349 pbm->name, i,
350 ((data & SCHIZO_IOMMU_DATA_VALID) ? 1 : 0),
351 ((data & SCHIZO_IOMMU_DATA_CACHE) ? 1 : 0),
352 (data & SCHIZO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT);
353 }
354 }
355 if (pbm->stc.strbuf_enabled)
356 __schizo_check_stc_error_pbm(pbm, type);
357 spin_unlock_irqrestore(&iommu->lock, flags);
358 }
359
360 static void schizo_check_iommu_error(struct pci_controller_info *p,
361 enum schizo_error_type type)
362 {
363 schizo_check_iommu_error_pbm(&p->pbm_A, type);
364 schizo_check_iommu_error_pbm(&p->pbm_B, type);
365 }
366
367 /* Uncorrectable ECC error status gathering. */
368 #define SCHIZO_UE_AFSR 0x10030UL
369 #define SCHIZO_UE_AFAR 0x10038UL
370
371 #define SCHIZO_UEAFSR_PPIO 0x8000000000000000UL /* Safari */
372 #define SCHIZO_UEAFSR_PDRD 0x4000000000000000UL /* Safari/Tomatillo */
373 #define SCHIZO_UEAFSR_PDWR 0x2000000000000000UL /* Safari */
374 #define SCHIZO_UEAFSR_SPIO 0x1000000000000000UL /* Safari */
375 #define SCHIZO_UEAFSR_SDMA 0x0800000000000000UL /* Safari/Tomatillo */
376 #define SCHIZO_UEAFSR_ERRPNDG 0x0300000000000000UL /* Safari */
377 #define SCHIZO_UEAFSR_BMSK 0x000003ff00000000UL /* Safari */
378 #define SCHIZO_UEAFSR_QOFF 0x00000000c0000000UL /* Safari/Tomatillo */
379 #define SCHIZO_UEAFSR_AID 0x000000001f000000UL /* Safari/Tomatillo */
380 #define SCHIZO_UEAFSR_PARTIAL 0x0000000000800000UL /* Safari */
381 #define SCHIZO_UEAFSR_OWNEDIN 0x0000000000400000UL /* Safari */
382 #define SCHIZO_UEAFSR_MTAGSYND 0x00000000000f0000UL /* Safari */
383 #define SCHIZO_UEAFSR_MTAG 0x000000000000e000UL /* Safari */
384 #define SCHIZO_UEAFSR_ECCSYND 0x00000000000001ffUL /* Safari */
385
386 static irqreturn_t schizo_ue_intr(int irq, void *dev_id)
387 {
388 struct pci_pbm_info *pbm = dev_id;
389 struct pci_controller_info *p = pbm->parent;
390 unsigned long afsr_reg = pbm->controller_regs + SCHIZO_UE_AFSR;
391 unsigned long afar_reg = pbm->controller_regs + SCHIZO_UE_AFAR;
392 unsigned long afsr, afar, error_bits;
393 int reported, limit;
394
395 /* Latch uncorrectable error status. */
396 afar = schizo_read(afar_reg);
397
398 /* If either of the error pending bits are set in the
399 * AFSR, the error status is being actively updated by
400 * the hardware and we must re-read to get a clean value.
401 */
402 limit = 1000;
403 do {
404 afsr = schizo_read(afsr_reg);
405 } while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);
406
407 /* Clear the primary/secondary error status bits. */
408 error_bits = afsr &
409 (SCHIZO_UEAFSR_PPIO | SCHIZO_UEAFSR_PDRD | SCHIZO_UEAFSR_PDWR |
410 SCHIZO_UEAFSR_SPIO | SCHIZO_UEAFSR_SDMA);
411 if (!error_bits)
412 return IRQ_NONE;
413 schizo_write(afsr_reg, error_bits);
414
415 /* Log the error. */
416 printk("%s: Uncorrectable Error, primary error type[%s]\n",
417 pbm->name,
418 (((error_bits & SCHIZO_UEAFSR_PPIO) ?
419 "PIO" :
420 ((error_bits & SCHIZO_UEAFSR_PDRD) ?
421 "DMA Read" :
422 ((error_bits & SCHIZO_UEAFSR_PDWR) ?
423 "DMA Write" : "???")))));
424 printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n",
425 pbm->name,
426 (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
427 (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
428 (afsr & SCHIZO_UEAFSR_AID) >> 24UL);
429 printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n",
430 pbm->name,
431 (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
432 (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
433 (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
434 (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
435 (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);
436 printk("%s: UE AFAR [%016lx]\n", pbm->name, afar);
437 printk("%s: UE Secondary errors [", pbm->name);
438 reported = 0;
439 if (afsr & SCHIZO_UEAFSR_SPIO) {
440 reported++;
441 printk("(PIO)");
442 }
443 if (afsr & SCHIZO_UEAFSR_SDMA) {
444 reported++;
445 printk("(DMA)");
446 }
447 if (!reported)
448 printk("(none)");
449 printk("]\n");
450
451 /* Interrogate IOMMU for error status. */
452 schizo_check_iommu_error(p, UE_ERR);
453
454 return IRQ_HANDLED;
455 }
456
457 #define SCHIZO_CE_AFSR 0x10040UL
458 #define SCHIZO_CE_AFAR 0x10048UL
459
460 #define SCHIZO_CEAFSR_PPIO 0x8000000000000000UL
461 #define SCHIZO_CEAFSR_PDRD 0x4000000000000000UL
462 #define SCHIZO_CEAFSR_PDWR 0x2000000000000000UL
463 #define SCHIZO_CEAFSR_SPIO 0x1000000000000000UL
464 #define SCHIZO_CEAFSR_SDMA 0x0800000000000000UL
465 #define SCHIZO_CEAFSR_ERRPNDG 0x0300000000000000UL
466 #define SCHIZO_CEAFSR_BMSK 0x000003ff00000000UL
467 #define SCHIZO_CEAFSR_QOFF 0x00000000c0000000UL
468 #define SCHIZO_CEAFSR_AID 0x000000001f000000UL
469 #define SCHIZO_CEAFSR_PARTIAL 0x0000000000800000UL
470 #define SCHIZO_CEAFSR_OWNEDIN 0x0000000000400000UL
471 #define SCHIZO_CEAFSR_MTAGSYND 0x00000000000f0000UL
472 #define SCHIZO_CEAFSR_MTAG 0x000000000000e000UL
473 #define SCHIZO_CEAFSR_ECCSYND 0x00000000000001ffUL
474
475 static irqreturn_t schizo_ce_intr(int irq, void *dev_id)
476 {
477 struct pci_pbm_info *pbm = dev_id;
478 unsigned long afsr_reg = pbm->controller_regs + SCHIZO_CE_AFSR;
479 unsigned long afar_reg = pbm->controller_regs + SCHIZO_CE_AFAR;
480 unsigned long afsr, afar, error_bits;
481 int reported, limit;
482
483 /* Latch error status. */
484 afar = schizo_read(afar_reg);
485
486 /* If either of the error pending bits are set in the
487 * AFSR, the error status is being actively updated by
488 * the hardware and we must re-read to get a clean value.
489 */
490 limit = 1000;
491 do {
492 afsr = schizo_read(afsr_reg);
493 } while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);
494
495 /* Clear primary/secondary error status bits. */
496 error_bits = afsr &
497 (SCHIZO_CEAFSR_PPIO | SCHIZO_CEAFSR_PDRD | SCHIZO_CEAFSR_PDWR |
498 SCHIZO_CEAFSR_SPIO | SCHIZO_CEAFSR_SDMA);
499 if (!error_bits)
500 return IRQ_NONE;
501 schizo_write(afsr_reg, error_bits);
502
503 /* Log the error. */
504 printk("%s: Correctable Error, primary error type[%s]\n",
505 pbm->name,
506 (((error_bits & SCHIZO_CEAFSR_PPIO) ?
507 "PIO" :
508 ((error_bits & SCHIZO_CEAFSR_PDRD) ?
509 "DMA Read" :
510 ((error_bits & SCHIZO_CEAFSR_PDWR) ?
511 "DMA Write" : "???")))));
512
513 /* XXX Use syndrome and afar to print out module string just like
514 * XXX UDB CE trap handler does... -DaveM
515 */
516 printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n",
517 pbm->name,
518 (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
519 (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
520 (afsr & SCHIZO_UEAFSR_AID) >> 24UL);
521 printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n",
522 pbm->name,
523 (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
524 (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
525 (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
526 (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
527 (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);
528 printk("%s: CE AFAR [%016lx]\n", pbm->name, afar);
529 printk("%s: CE Secondary errors [", pbm->name);
530 reported = 0;
531 if (afsr & SCHIZO_CEAFSR_SPIO) {
532 reported++;
533 printk("(PIO)");
534 }
535 if (afsr & SCHIZO_CEAFSR_SDMA) {
536 reported++;
537 printk("(DMA)");
538 }
539 if (!reported)
540 printk("(none)");
541 printk("]\n");
542
543 return IRQ_HANDLED;
544 }
545
546 #define SCHIZO_PCI_AFSR 0x2010UL
547 #define SCHIZO_PCI_AFAR 0x2018UL
548
549 #define SCHIZO_PCIAFSR_PMA 0x8000000000000000UL /* Schizo/Tomatillo */
550 #define SCHIZO_PCIAFSR_PTA 0x4000000000000000UL /* Schizo/Tomatillo */
551 #define SCHIZO_PCIAFSR_PRTRY 0x2000000000000000UL /* Schizo/Tomatillo */
552 #define SCHIZO_PCIAFSR_PPERR 0x1000000000000000UL /* Schizo/Tomatillo */
553 #define SCHIZO_PCIAFSR_PTTO 0x0800000000000000UL /* Schizo/Tomatillo */
554 #define SCHIZO_PCIAFSR_PUNUS 0x0400000000000000UL /* Schizo */
555 #define SCHIZO_PCIAFSR_SMA 0x0200000000000000UL /* Schizo/Tomatillo */
556 #define SCHIZO_PCIAFSR_STA 0x0100000000000000UL /* Schizo/Tomatillo */
557 #define SCHIZO_PCIAFSR_SRTRY 0x0080000000000000UL /* Schizo/Tomatillo */
558 #define SCHIZO_PCIAFSR_SPERR 0x0040000000000000UL /* Schizo/Tomatillo */
559 #define SCHIZO_PCIAFSR_STTO 0x0020000000000000UL /* Schizo/Tomatillo */
560 #define SCHIZO_PCIAFSR_SUNUS 0x0010000000000000UL /* Schizo */
561 #define SCHIZO_PCIAFSR_BMSK 0x000003ff00000000UL /* Schizo/Tomatillo */
562 #define SCHIZO_PCIAFSR_BLK 0x0000000080000000UL /* Schizo/Tomatillo */
563 #define SCHIZO_PCIAFSR_CFG 0x0000000040000000UL /* Schizo/Tomatillo */
564 #define SCHIZO_PCIAFSR_MEM 0x0000000020000000UL /* Schizo/Tomatillo */
565 #define SCHIZO_PCIAFSR_IO 0x0000000010000000UL /* Schizo/Tomatillo */
566
567 #define SCHIZO_PCI_CTRL (0x2000UL)
568 #define SCHIZO_PCICTRL_BUS_UNUS (1UL << 63UL) /* Safari */
569 #define SCHIZO_PCICTRL_DTO_INT (1UL << 61UL) /* Tomatillo */
570 #define SCHIZO_PCICTRL_ARB_PRIO (0x1ff << 52UL) /* Tomatillo */
571 #define SCHIZO_PCICTRL_ESLCK (1UL << 51UL) /* Safari */
572 #define SCHIZO_PCICTRL_ERRSLOT (7UL << 48UL) /* Safari */
573 #define SCHIZO_PCICTRL_TTO_ERR (1UL << 38UL) /* Safari/Tomatillo */
574 #define SCHIZO_PCICTRL_RTRY_ERR (1UL << 37UL) /* Safari/Tomatillo */
575 #define SCHIZO_PCICTRL_DTO_ERR (1UL << 36UL) /* Safari/Tomatillo */
576 #define SCHIZO_PCICTRL_SBH_ERR (1UL << 35UL) /* Safari */
577 #define SCHIZO_PCICTRL_SERR (1UL << 34UL) /* Safari/Tomatillo */
578 #define SCHIZO_PCICTRL_PCISPD (1UL << 33UL) /* Safari */
579 #define SCHIZO_PCICTRL_MRM_PREF (1UL << 30UL) /* Tomatillo */
580 #define SCHIZO_PCICTRL_RDO_PREF (1UL << 29UL) /* Tomatillo */
581 #define SCHIZO_PCICTRL_RDL_PREF (1UL << 28UL) /* Tomatillo */
582 #define SCHIZO_PCICTRL_PTO (3UL << 24UL) /* Safari/Tomatillo */
583 #define SCHIZO_PCICTRL_PTO_SHIFT 24UL
584 #define SCHIZO_PCICTRL_TRWSW (7UL << 21UL) /* Tomatillo */
585 #define SCHIZO_PCICTRL_F_TGT_A (1UL << 20UL) /* Tomatillo */
586 #define SCHIZO_PCICTRL_S_DTO_INT (1UL << 19UL) /* Safari */
587 #define SCHIZO_PCICTRL_F_TGT_RT (1UL << 19UL) /* Tomatillo */
588 #define SCHIZO_PCICTRL_SBH_INT (1UL << 18UL) /* Safari */
589 #define SCHIZO_PCICTRL_T_DTO_INT (1UL << 18UL) /* Tomatillo */
590 #define SCHIZO_PCICTRL_EEN (1UL << 17UL) /* Safari/Tomatillo */
591 #define SCHIZO_PCICTRL_PARK (1UL << 16UL) /* Safari/Tomatillo */
592 #define SCHIZO_PCICTRL_PCIRST (1UL << 8UL) /* Safari */
593 #define SCHIZO_PCICTRL_ARB_S (0x3fUL << 0UL) /* Safari */
594 #define SCHIZO_PCICTRL_ARB_T (0xffUL << 0UL) /* Tomatillo */
595
596 static irqreturn_t schizo_pcierr_intr_other(struct pci_pbm_info *pbm)
597 {
598 unsigned long csr_reg, csr, csr_error_bits;
599 irqreturn_t ret = IRQ_NONE;
600 u16 stat;
601
602 csr_reg = pbm->pbm_regs + SCHIZO_PCI_CTRL;
603 csr = schizo_read(csr_reg);
604 csr_error_bits =
605 csr & (SCHIZO_PCICTRL_BUS_UNUS |
606 SCHIZO_PCICTRL_TTO_ERR |
607 SCHIZO_PCICTRL_RTRY_ERR |
608 SCHIZO_PCICTRL_DTO_ERR |
609 SCHIZO_PCICTRL_SBH_ERR |
610 SCHIZO_PCICTRL_SERR);
611 if (csr_error_bits) {
612 /* Clear the errors. */
613 schizo_write(csr_reg, csr);
614
615 /* Log 'em. */
616 if (csr_error_bits & SCHIZO_PCICTRL_BUS_UNUS)
617 printk("%s: Bus unusable error asserted.\n",
618 pbm->name);
619 if (csr_error_bits & SCHIZO_PCICTRL_TTO_ERR)
620 printk("%s: PCI TRDY# timeout error asserted.\n",
621 pbm->name);
622 if (csr_error_bits & SCHIZO_PCICTRL_RTRY_ERR)
623 printk("%s: PCI excessive retry error asserted.\n",
624 pbm->name);
625 if (csr_error_bits & SCHIZO_PCICTRL_DTO_ERR)
626 printk("%s: PCI discard timeout error asserted.\n",
627 pbm->name);
628 if (csr_error_bits & SCHIZO_PCICTRL_SBH_ERR)
629 printk("%s: PCI streaming byte hole error asserted.\n",
630 pbm->name);
631 if (csr_error_bits & SCHIZO_PCICTRL_SERR)
632 printk("%s: PCI SERR signal asserted.\n",
633 pbm->name);
634 ret = IRQ_HANDLED;
635 }
636 pci_read_config_word(pbm->pci_bus->self, PCI_STATUS, &stat);
637 if (stat & (PCI_STATUS_PARITY |
638 PCI_STATUS_SIG_TARGET_ABORT |
639 PCI_STATUS_REC_TARGET_ABORT |
640 PCI_STATUS_REC_MASTER_ABORT |
641 PCI_STATUS_SIG_SYSTEM_ERROR)) {
642 printk("%s: PCI bus error, PCI_STATUS[%04x]\n",
643 pbm->name, stat);
644 pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff);
645 ret = IRQ_HANDLED;
646 }
647 return ret;
648 }
649
650 static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id)
651 {
652 struct pci_pbm_info *pbm = dev_id;
653 struct pci_controller_info *p = pbm->parent;
654 unsigned long afsr_reg, afar_reg, base;
655 unsigned long afsr, afar, error_bits;
656 int reported;
657
658 base = pbm->pbm_regs;
659
660 afsr_reg = base + SCHIZO_PCI_AFSR;
661 afar_reg = base + SCHIZO_PCI_AFAR;
662
663 /* Latch error status. */
664 afar = schizo_read(afar_reg);
665 afsr = schizo_read(afsr_reg);
666
667 /* Clear primary/secondary error status bits. */
668 error_bits = afsr &
669 (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
670 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
671 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
672 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
673 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
674 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS);
675 if (!error_bits)
676 return schizo_pcierr_intr_other(pbm);
677 schizo_write(afsr_reg, error_bits);
678
679 /* Log the error. */
680 printk("%s: PCI Error, primary error type[%s]\n",
681 pbm->name,
682 (((error_bits & SCHIZO_PCIAFSR_PMA) ?
683 "Master Abort" :
684 ((error_bits & SCHIZO_PCIAFSR_PTA) ?
685 "Target Abort" :
686 ((error_bits & SCHIZO_PCIAFSR_PRTRY) ?
687 "Excessive Retries" :
688 ((error_bits & SCHIZO_PCIAFSR_PPERR) ?
689 "Parity Error" :
690 ((error_bits & SCHIZO_PCIAFSR_PTTO) ?
691 "Timeout" :
692 ((error_bits & SCHIZO_PCIAFSR_PUNUS) ?
693 "Bus Unusable" : "???"))))))));
694 printk("%s: bytemask[%04lx] was_block(%d) space(%s)\n",
695 pbm->name,
696 (afsr & SCHIZO_PCIAFSR_BMSK) >> 32UL,
697 (afsr & SCHIZO_PCIAFSR_BLK) ? 1 : 0,
698 ((afsr & SCHIZO_PCIAFSR_CFG) ?
699 "Config" :
700 ((afsr & SCHIZO_PCIAFSR_MEM) ?
701 "Memory" :
702 ((afsr & SCHIZO_PCIAFSR_IO) ?
703 "I/O" : "???"))));
704 printk("%s: PCI AFAR [%016lx]\n",
705 pbm->name, afar);
706 printk("%s: PCI Secondary errors [",
707 pbm->name);
708 reported = 0;
709 if (afsr & SCHIZO_PCIAFSR_SMA) {
710 reported++;
711 printk("(Master Abort)");
712 }
713 if (afsr & SCHIZO_PCIAFSR_STA) {
714 reported++;
715 printk("(Target Abort)");
716 }
717 if (afsr & SCHIZO_PCIAFSR_SRTRY) {
718 reported++;
719 printk("(Excessive Retries)");
720 }
721 if (afsr & SCHIZO_PCIAFSR_SPERR) {
722 reported++;
723 printk("(Parity Error)");
724 }
725 if (afsr & SCHIZO_PCIAFSR_STTO) {
726 reported++;
727 printk("(Timeout)");
728 }
729 if (afsr & SCHIZO_PCIAFSR_SUNUS) {
730 reported++;
731 printk("(Bus Unusable)");
732 }
733 if (!reported)
734 printk("(none)");
735 printk("]\n");
736
737 /* For the error types shown, scan PBM's PCI bus for devices
738 * which have logged that error type.
739 */
740
741 /* If we see a Target Abort, this could be the result of an
742 * IOMMU translation error of some sort. It is extremely
743 * useful to log this information as usually it indicates
744 * a bug in the IOMMU support code or a PCI device driver.
745 */
746 if (error_bits & (SCHIZO_PCIAFSR_PTA | SCHIZO_PCIAFSR_STA)) {
747 schizo_check_iommu_error(p, PCI_ERR);
748 pci_scan_for_target_abort(pbm, pbm->pci_bus);
749 }
750 if (error_bits & (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_SMA))
751 pci_scan_for_master_abort(pbm, pbm->pci_bus);
752
753 /* For excessive retries, PSYCHO/PBM will abort the device
754 * and there is no way to specifically check for excessive
755 * retries in the config space status registers. So what
756 * we hope is that we'll catch it via the master/target
757 * abort events.
758 */
759
760 if (error_bits & (SCHIZO_PCIAFSR_PPERR | SCHIZO_PCIAFSR_SPERR))
761 pci_scan_for_parity_error(pbm, pbm->pci_bus);
762
763 return IRQ_HANDLED;
764 }
765
766 #define SCHIZO_SAFARI_ERRLOG 0x10018UL
767
768 #define SAFARI_ERRLOG_ERROUT 0x8000000000000000UL
769
770 #define BUS_ERROR_BADCMD 0x4000000000000000UL /* Schizo/Tomatillo */
771 #define BUS_ERROR_SSMDIS 0x2000000000000000UL /* Safari */
772 #define BUS_ERROR_BADMA 0x1000000000000000UL /* Safari */
773 #define BUS_ERROR_BADMB 0x0800000000000000UL /* Safari */
774 #define BUS_ERROR_BADMC 0x0400000000000000UL /* Safari */
775 #define BUS_ERROR_SNOOP_GR 0x0000000000200000UL /* Tomatillo */
776 #define BUS_ERROR_SNOOP_PCI 0x0000000000100000UL /* Tomatillo */
777 #define BUS_ERROR_SNOOP_RD 0x0000000000080000UL /* Tomatillo */
778 #define BUS_ERROR_SNOOP_RDS 0x0000000000020000UL /* Tomatillo */
779 #define BUS_ERROR_SNOOP_RDSA 0x0000000000010000UL /* Tomatillo */
780 #define BUS_ERROR_SNOOP_OWN 0x0000000000008000UL /* Tomatillo */
781 #define BUS_ERROR_SNOOP_RDO 0x0000000000004000UL /* Tomatillo */
782 #define BUS_ERROR_CPU1PS 0x0000000000002000UL /* Safari */
783 #define BUS_ERROR_WDATA_PERR 0x0000000000002000UL /* Tomatillo */
784 #define BUS_ERROR_CPU1PB 0x0000000000001000UL /* Safari */
785 #define BUS_ERROR_CTRL_PERR 0x0000000000001000UL /* Tomatillo */
786 #define BUS_ERROR_CPU0PS 0x0000000000000800UL /* Safari */
787 #define BUS_ERROR_SNOOP_ERR 0x0000000000000800UL /* Tomatillo */
788 #define BUS_ERROR_CPU0PB 0x0000000000000400UL /* Safari */
789 #define BUS_ERROR_JBUS_ILL_B 0x0000000000000400UL /* Tomatillo */
790 #define BUS_ERROR_CIQTO 0x0000000000000200UL /* Safari */
791 #define BUS_ERROR_LPQTO 0x0000000000000100UL /* Safari */
792 #define BUS_ERROR_JBUS_ILL_C 0x0000000000000100UL /* Tomatillo */
793 #define BUS_ERROR_SFPQTO 0x0000000000000080UL /* Safari */
794 #define BUS_ERROR_UFPQTO 0x0000000000000040UL /* Safari */
795 #define BUS_ERROR_RD_PERR 0x0000000000000040UL /* Tomatillo */
796 #define BUS_ERROR_APERR 0x0000000000000020UL /* Safari/Tomatillo */
797 #define BUS_ERROR_UNMAP 0x0000000000000010UL /* Safari/Tomatillo */
798 #define BUS_ERROR_BUSERR 0x0000000000000004UL /* Safari/Tomatillo */
799 #define BUS_ERROR_TIMEOUT 0x0000000000000002UL /* Safari/Tomatillo */
800 #define BUS_ERROR_ILL 0x0000000000000001UL /* Safari */
801
802 /* We only expect UNMAP errors here. The rest of the Safari errors
803 * are marked fatal and thus cause a system reset.
804 */
805 static irqreturn_t schizo_safarierr_intr(int irq, void *dev_id)
806 {
807 struct pci_pbm_info *pbm = dev_id;
808 struct pci_controller_info *p = pbm->parent;
809 u64 errlog;
810
811 errlog = schizo_read(pbm->controller_regs + SCHIZO_SAFARI_ERRLOG);
812 schizo_write(pbm->controller_regs + SCHIZO_SAFARI_ERRLOG,
813 errlog & ~(SAFARI_ERRLOG_ERROUT));
814
815 if (!(errlog & BUS_ERROR_UNMAP)) {
816 printk("%s: Unexpected Safari/JBUS error interrupt, errlog[%016lx]\n",
817 pbm->name, errlog);
818
819 return IRQ_HANDLED;
820 }
821
822 printk("%s: Safari/JBUS interrupt, UNMAPPED error, interrogating IOMMUs.\n",
823 pbm->name);
824 schizo_check_iommu_error(p, SAFARI_ERR);
825
826 return IRQ_HANDLED;
827 }
828
829 /* Nearly identical to PSYCHO equivalents... */
830 #define SCHIZO_ECC_CTRL 0x10020UL
831 #define SCHIZO_ECCCTRL_EE 0x8000000000000000UL /* Enable ECC Checking */
832 #define SCHIZO_ECCCTRL_UE 0x4000000000000000UL /* Enable UE Interrupts */
833 #define SCHIZO_ECCCTRL_CE 0x2000000000000000UL /* Enable CE INterrupts */
834
835 #define SCHIZO_SAFARI_ERRCTRL 0x10008UL
836 #define SCHIZO_SAFERRCTRL_EN 0x8000000000000000UL
837 #define SCHIZO_SAFARI_IRQCTRL 0x10010UL
838 #define SCHIZO_SAFIRQCTRL_EN 0x8000000000000000UL
839
840 static int pbm_routes_this_ino(struct pci_pbm_info *pbm, u32 ino)
841 {
842 ino &= IMAP_INO;
843
844 if (pbm->ino_bitmap & (1UL << ino))
845 return 1;
846
847 return 0;
848 }
849
850 /* How the Tomatillo IRQs are routed around is pure guesswork here.
851 *
852 * All the Tomatillo devices I see in prtconf dumps seem to have only
853 * a single PCI bus unit attached to it. It would seem they are separate
854 * devices because their PortID (ie. JBUS ID) values are all different
855 * and thus the registers are mapped to totally different locations.
856 *
857 * However, two Tomatillo's look "similar" in that the only difference
858 * in their PortID is the lowest bit.
859 *
860 * So if we were to ignore this lower bit, it certainly looks like two
861 * PCI bus units of the same Tomatillo. I still have not really
862 * figured this out...
863 */
864 static void tomatillo_register_error_handlers(struct pci_pbm_info *pbm)
865 {
866 struct of_device *op = of_find_device_by_node(pbm->prom_node);
867 u64 tmp, err_mask, err_no_mask;
868 int err;
869
870 /* Tomatillo IRQ property layout is:
871 * 0: PCIERR
872 * 1: UE ERR
873 * 2: CE ERR
874 * 3: SERR
875 * 4: POWER FAIL?
876 */
877
878 if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) {
879 err = request_irq(op->irqs[1], schizo_ue_intr, 0,
880 "TOMATILLO_UE", pbm);
881 if (err)
882 printk(KERN_WARNING "%s: Could not register UE, "
883 "err=%d\n", pbm->name, err);
884 }
885 if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) {
886 err = request_irq(op->irqs[2], schizo_ce_intr, 0,
887 "TOMATILLO_CE", pbm);
888 if (err)
889 printk(KERN_WARNING "%s: Could not register CE, "
890 "err=%d\n", pbm->name, err);
891 }
892 err = 0;
893 if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) {
894 err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
895 "TOMATILLO_PCIERR", pbm);
896 } else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) {
897 err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
898 "TOMATILLO_PCIERR", pbm);
899 }
900 if (err)
901 printk(KERN_WARNING "%s: Could not register PCIERR, "
902 "err=%d\n", pbm->name, err);
903
904 if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) {
905 err = request_irq(op->irqs[3], schizo_safarierr_intr, 0,
906 "TOMATILLO_SERR", pbm);
907 if (err)
908 printk(KERN_WARNING "%s: Could not register SERR, "
909 "err=%d\n", pbm->name, err);
910 }
911
912 /* Enable UE and CE interrupts for controller. */
913 schizo_write(pbm->controller_regs + SCHIZO_ECC_CTRL,
914 (SCHIZO_ECCCTRL_EE |
915 SCHIZO_ECCCTRL_UE |
916 SCHIZO_ECCCTRL_CE));
917
918 /* Enable PCI Error interrupts and clear error
919 * bits.
920 */
921 err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
922 SCHIZO_PCICTRL_TTO_ERR |
923 SCHIZO_PCICTRL_RTRY_ERR |
924 SCHIZO_PCICTRL_SERR |
925 SCHIZO_PCICTRL_EEN);
926
927 err_no_mask = SCHIZO_PCICTRL_DTO_ERR;
928
929 tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_CTRL);
930 tmp |= err_mask;
931 tmp &= ~err_no_mask;
932 schizo_write(pbm->pbm_regs + SCHIZO_PCI_CTRL, tmp);
933
934 err_mask = (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
935 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
936 SCHIZO_PCIAFSR_PTTO |
937 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
938 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
939 SCHIZO_PCIAFSR_STTO);
940
941 schizo_write(pbm->pbm_regs + SCHIZO_PCI_AFSR, err_mask);
942
943 err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SNOOP_GR |
944 BUS_ERROR_SNOOP_PCI | BUS_ERROR_SNOOP_RD |
945 BUS_ERROR_SNOOP_RDS | BUS_ERROR_SNOOP_RDSA |
946 BUS_ERROR_SNOOP_OWN | BUS_ERROR_SNOOP_RDO |
947 BUS_ERROR_WDATA_PERR | BUS_ERROR_CTRL_PERR |
948 BUS_ERROR_SNOOP_ERR | BUS_ERROR_JBUS_ILL_B |
949 BUS_ERROR_JBUS_ILL_C | BUS_ERROR_RD_PERR |
950 BUS_ERROR_APERR | BUS_ERROR_UNMAP |
951 BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT);
952
953 schizo_write(pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL,
954 (SCHIZO_SAFERRCTRL_EN | err_mask));
955
956 schizo_write(pbm->controller_regs + SCHIZO_SAFARI_IRQCTRL,
957 (SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP)));
958 }
959
960 static void schizo_register_error_handlers(struct pci_pbm_info *pbm)
961 {
962 struct of_device *op = of_find_device_by_node(pbm->prom_node);
963 u64 tmp, err_mask, err_no_mask;
964 int err;
965
966 /* Schizo IRQ property layout is:
967 * 0: PCIERR
968 * 1: UE ERR
969 * 2: CE ERR
970 * 3: SERR
971 * 4: POWER FAIL?
972 */
973
974 if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) {
975 err = request_irq(op->irqs[1], schizo_ue_intr, 0,
976 "SCHIZO_UE", pbm);
977 if (err)
978 printk(KERN_WARNING "%s: Could not register UE, "
979 "err=%d\n", pbm->name, err);
980 }
981 if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) {
982 err = request_irq(op->irqs[2], schizo_ce_intr, 0,
983 "SCHIZO_CE", pbm);
984 if (err)
985 printk(KERN_WARNING "%s: Could not register CE, "
986 "err=%d\n", pbm->name, err);
987 }
988 err = 0;
989 if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) {
990 err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
991 "SCHIZO_PCIERR", pbm);
992 } else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) {
993 err = request_irq(op->irqs[0], schizo_pcierr_intr, 0,
994 "SCHIZO_PCIERR", pbm);
995 }
996 if (err)
997 printk(KERN_WARNING "%s: Could not register PCIERR, "
998 "err=%d\n", pbm->name, err);
999
1000 if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) {
1001 err = request_irq(op->irqs[3], schizo_safarierr_intr, 0,
1002 "SCHIZO_SERR", pbm);
1003 if (err)
1004 printk(KERN_WARNING "%s: Could not register SERR, "
1005 "err=%d\n", pbm->name, err);
1006 }
1007
1008 /* Enable UE and CE interrupts for controller. */
1009 schizo_write(pbm->controller_regs + SCHIZO_ECC_CTRL,
1010 (SCHIZO_ECCCTRL_EE |
1011 SCHIZO_ECCCTRL_UE |
1012 SCHIZO_ECCCTRL_CE));
1013
1014 err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
1015 SCHIZO_PCICTRL_ESLCK |
1016 SCHIZO_PCICTRL_TTO_ERR |
1017 SCHIZO_PCICTRL_RTRY_ERR |
1018 SCHIZO_PCICTRL_SBH_ERR |
1019 SCHIZO_PCICTRL_SERR |
1020 SCHIZO_PCICTRL_EEN);
1021
1022 err_no_mask = (SCHIZO_PCICTRL_DTO_ERR |
1023 SCHIZO_PCICTRL_SBH_INT);
1024
1025 /* Enable PCI Error interrupts and clear error
1026 * bits for each PBM.
1027 */
1028 tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_CTRL);
1029 tmp |= err_mask;
1030 tmp &= ~err_no_mask;
1031 schizo_write(pbm->pbm_regs + SCHIZO_PCI_CTRL, tmp);
1032
1033 schizo_write(pbm->pbm_regs + SCHIZO_PCI_AFSR,
1034 (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
1035 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
1036 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
1037 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
1038 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
1039 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS));
1040
1041 /* Make all Safari error conditions fatal except unmapped
1042 * errors which we make generate interrupts.
1043 */
1044 err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SSMDIS |
1045 BUS_ERROR_BADMA | BUS_ERROR_BADMB |
1046 BUS_ERROR_BADMC |
1047 BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
1048 BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB |
1049 BUS_ERROR_CIQTO |
1050 BUS_ERROR_LPQTO | BUS_ERROR_SFPQTO |
1051 BUS_ERROR_UFPQTO | BUS_ERROR_APERR |
1052 BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT |
1053 BUS_ERROR_ILL);
1054 #if 1
1055 /* XXX Something wrong with some Excalibur systems
1056 * XXX Sun is shipping. The behavior on a 2-cpu
1057 * XXX machine is that both CPU1 parity error bits
1058 * XXX are set and are immediately set again when
1059 * XXX their error status bits are cleared. Just
1060 * XXX ignore them for now. -DaveM
1061 */
1062 err_mask &= ~(BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
1063 BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB);
1064 #endif
1065
1066 schizo_write(pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL,
1067 (SCHIZO_SAFERRCTRL_EN | err_mask));
1068 }
1069
1070 static void pbm_config_busmastering(struct pci_pbm_info *pbm)
1071 {
1072 u8 *addr;
1073
1074 /* Set cache-line size to 64 bytes, this is actually
1075 * a nop but I do it for completeness.
1076 */
1077 addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
1078 0, PCI_CACHE_LINE_SIZE);
1079 pci_config_write8(addr, 64 / sizeof(u32));
1080
1081 /* Set PBM latency timer to 64 PCI clocks. */
1082 addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
1083 0, PCI_LATENCY_TIMER);
1084 pci_config_write8(addr, 64);
1085 }
1086
1087 static void __init schizo_scan_bus(struct pci_pbm_info *pbm)
1088 {
1089 pbm_config_busmastering(pbm);
1090 pbm->is_66mhz_capable =
1091 (of_find_property(pbm->prom_node, "66mhz-capable", NULL)
1092 != NULL);
1093
1094 pbm->pci_bus = pci_scan_one_pbm(pbm);
1095
1096 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
1097 tomatillo_register_error_handlers(pbm);
1098 else
1099 schizo_register_error_handlers(pbm);
1100 }
1101
1102 #define SCHIZO_STRBUF_CONTROL (0x02800UL)
1103 #define SCHIZO_STRBUF_FLUSH (0x02808UL)
1104 #define SCHIZO_STRBUF_FSYNC (0x02810UL)
1105 #define SCHIZO_STRBUF_CTXFLUSH (0x02818UL)
1106 #define SCHIZO_STRBUF_CTXMATCH (0x10000UL)
1107
1108 static void schizo_pbm_strbuf_init(struct pci_pbm_info *pbm)
1109 {
1110 unsigned long base = pbm->pbm_regs;
1111 u64 control;
1112
1113 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
1114 /* TOMATILLO lacks streaming cache. */
1115 return;
1116 }
1117
1118 /* SCHIZO has context flushing. */
1119 pbm->stc.strbuf_control = base + SCHIZO_STRBUF_CONTROL;
1120 pbm->stc.strbuf_pflush = base + SCHIZO_STRBUF_FLUSH;
1121 pbm->stc.strbuf_fsync = base + SCHIZO_STRBUF_FSYNC;
1122 pbm->stc.strbuf_ctxflush = base + SCHIZO_STRBUF_CTXFLUSH;
1123 pbm->stc.strbuf_ctxmatch_base = base + SCHIZO_STRBUF_CTXMATCH;
1124
1125 pbm->stc.strbuf_flushflag = (volatile unsigned long *)
1126 ((((unsigned long)&pbm->stc.__flushflag_buf[0])
1127 + 63UL)
1128 & ~63UL);
1129 pbm->stc.strbuf_flushflag_pa = (unsigned long)
1130 __pa(pbm->stc.strbuf_flushflag);
1131
1132 /* Turn off LRU locking and diag mode, enable the
1133 * streaming buffer and leave the rerun-disable
1134 * setting however OBP set it.
1135 */
1136 control = schizo_read(pbm->stc.strbuf_control);
1137 control &= ~(SCHIZO_STRBUF_CTRL_LPTR |
1138 SCHIZO_STRBUF_CTRL_LENAB |
1139 SCHIZO_STRBUF_CTRL_DENAB);
1140 control |= SCHIZO_STRBUF_CTRL_ENAB;
1141 schizo_write(pbm->stc.strbuf_control, control);
1142
1143 pbm->stc.strbuf_enabled = 1;
1144 }
1145
1146 #define SCHIZO_IOMMU_CONTROL (0x00200UL)
1147 #define SCHIZO_IOMMU_TSBBASE (0x00208UL)
1148 #define SCHIZO_IOMMU_FLUSH (0x00210UL)
1149 #define SCHIZO_IOMMU_CTXFLUSH (0x00218UL)
1150
1151 static int schizo_pbm_iommu_init(struct pci_pbm_info *pbm)
1152 {
1153 struct iommu *iommu = pbm->iommu;
1154 unsigned long i, tagbase, database;
1155 struct property *prop;
1156 u32 vdma[2], dma_mask;
1157 int tsbsize, err;
1158 u64 control;
1159
1160 prop = of_find_property(pbm->prom_node, "virtual-dma", NULL);
1161 if (prop) {
1162 u32 *val = prop->value;
1163
1164 vdma[0] = val[0];
1165 vdma[1] = val[1];
1166 } else {
1167 /* No property, use default values. */
1168 vdma[0] = 0xc0000000;
1169 vdma[1] = 0x40000000;
1170 }
1171
1172 dma_mask = vdma[0];
1173 switch (vdma[1]) {
1174 case 0x20000000:
1175 dma_mask |= 0x1fffffff;
1176 tsbsize = 64;
1177 break;
1178
1179 case 0x40000000:
1180 dma_mask |= 0x3fffffff;
1181 tsbsize = 128;
1182 break;
1183
1184 case 0x80000000:
1185 dma_mask |= 0x7fffffff;
1186 tsbsize = 128;
1187 break;
1188
1189 default:
1190 prom_printf("SCHIZO: strange virtual-dma size.\n");
1191 prom_halt();
1192 };
1193
1194 /* Register addresses, SCHIZO has iommu ctx flushing. */
1195 iommu->iommu_control = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL;
1196 iommu->iommu_tsbbase = pbm->pbm_regs + SCHIZO_IOMMU_TSBBASE;
1197 iommu->iommu_flush = pbm->pbm_regs + SCHIZO_IOMMU_FLUSH;
1198 iommu->iommu_tags = iommu->iommu_flush + (0xa580UL - 0x0210UL);
1199 iommu->iommu_ctxflush = pbm->pbm_regs + SCHIZO_IOMMU_CTXFLUSH;
1200
1201 /* We use the main control/status register of SCHIZO as the write
1202 * completion register.
1203 */
1204 iommu->write_complete_reg = pbm->controller_regs + 0x10000UL;
1205
1206 /*
1207 * Invalidate TLB Entries.
1208 */
1209 control = schizo_read(iommu->iommu_control);
1210 control |= SCHIZO_IOMMU_CTRL_DENAB;
1211 schizo_write(iommu->iommu_control, control);
1212
1213 tagbase = SCHIZO_IOMMU_TAG, database = SCHIZO_IOMMU_DATA;
1214
1215 for(i = 0; i < 16; i++) {
1216 schizo_write(pbm->pbm_regs + tagbase + (i * 8UL), 0);
1217 schizo_write(pbm->pbm_regs + database + (i * 8UL), 0);
1218 }
1219
1220 /* Leave diag mode enabled for full-flushing done
1221 * in pci_iommu.c
1222 */
1223 err = iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask);
1224 if (err)
1225 return err;
1226
1227 schizo_write(iommu->iommu_tsbbase, __pa(iommu->page_table));
1228
1229 control = schizo_read(iommu->iommu_control);
1230 control &= ~(SCHIZO_IOMMU_CTRL_TSBSZ | SCHIZO_IOMMU_CTRL_TBWSZ);
1231 switch (tsbsize) {
1232 case 64:
1233 control |= SCHIZO_IOMMU_TSBSZ_64K;
1234 break;
1235 case 128:
1236 control |= SCHIZO_IOMMU_TSBSZ_128K;
1237 break;
1238 };
1239
1240 control |= SCHIZO_IOMMU_CTRL_ENAB;
1241 schizo_write(iommu->iommu_control, control);
1242
1243 return 0;
1244 }
1245
1246 #define SCHIZO_PCI_IRQ_RETRY (0x1a00UL)
1247 #define SCHIZO_IRQ_RETRY_INF 0xffUL
1248
1249 #define SCHIZO_PCI_DIAG (0x2020UL)
1250 #define SCHIZO_PCIDIAG_D_BADECC (1UL << 10UL) /* Disable BAD ECC errors (Schizo) */
1251 #define SCHIZO_PCIDIAG_D_BYPASS (1UL << 9UL) /* Disable MMU bypass mode (Schizo/Tomatillo) */
1252 #define SCHIZO_PCIDIAG_D_TTO (1UL << 8UL) /* Disable TTO errors (Schizo/Tomatillo) */
1253 #define SCHIZO_PCIDIAG_D_RTRYARB (1UL << 7UL) /* Disable retry arbitration (Schizo) */
1254 #define SCHIZO_PCIDIAG_D_RETRY (1UL << 6UL) /* Disable retry limit (Schizo/Tomatillo) */
1255 #define SCHIZO_PCIDIAG_D_INTSYNC (1UL << 5UL) /* Disable interrupt/DMA synch (Schizo/Tomatillo) */
1256 #define SCHIZO_PCIDIAG_I_DMA_PARITY (1UL << 3UL) /* Invert DMA parity (Schizo/Tomatillo) */
1257 #define SCHIZO_PCIDIAG_I_PIOD_PARITY (1UL << 2UL) /* Invert PIO data parity (Schizo/Tomatillo) */
1258 #define SCHIZO_PCIDIAG_I_PIOA_PARITY (1UL << 1UL) /* Invert PIO address parity (Schizo/Tomatillo) */
1259
1260 #define TOMATILLO_PCI_IOC_CSR (0x2248UL)
1261 #define TOMATILLO_IOC_PART_WPENAB 0x0000000000080000UL
1262 #define TOMATILLO_IOC_RDMULT_PENAB 0x0000000000040000UL
1263 #define TOMATILLO_IOC_RDONE_PENAB 0x0000000000020000UL
1264 #define TOMATILLO_IOC_RDLINE_PENAB 0x0000000000010000UL
1265 #define TOMATILLO_IOC_RDMULT_PLEN 0x000000000000c000UL
1266 #define TOMATILLO_IOC_RDMULT_PLEN_SHIFT 14UL
1267 #define TOMATILLO_IOC_RDONE_PLEN 0x0000000000003000UL
1268 #define TOMATILLO_IOC_RDONE_PLEN_SHIFT 12UL
1269 #define TOMATILLO_IOC_RDLINE_PLEN 0x0000000000000c00UL
1270 #define TOMATILLO_IOC_RDLINE_PLEN_SHIFT 10UL
1271 #define TOMATILLO_IOC_PREF_OFF 0x00000000000003f8UL
1272 #define TOMATILLO_IOC_PREF_OFF_SHIFT 3UL
1273 #define TOMATILLO_IOC_RDMULT_CPENAB 0x0000000000000004UL
1274 #define TOMATILLO_IOC_RDONE_CPENAB 0x0000000000000002UL
1275 #define TOMATILLO_IOC_RDLINE_CPENAB 0x0000000000000001UL
1276
1277 #define TOMATILLO_PCI_IOC_TDIAG (0x2250UL)
1278 #define TOMATILLO_PCI_IOC_DDIAG (0x2290UL)
1279
1280 static void schizo_pbm_hw_init(struct pci_pbm_info *pbm)
1281 {
1282 struct property *prop;
1283 u64 tmp;
1284
1285 schizo_write(pbm->pbm_regs + SCHIZO_PCI_IRQ_RETRY, 5);
1286
1287 tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_CTRL);
1288
1289 /* Enable arbiter for all PCI slots. */
1290 tmp |= 0xff;
1291
1292 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
1293 pbm->chip_version >= 0x2)
1294 tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT;
1295
1296 prop = of_find_property(pbm->prom_node, "no-bus-parking", NULL);
1297 if (!prop)
1298 tmp |= SCHIZO_PCICTRL_PARK;
1299 else
1300 tmp &= ~SCHIZO_PCICTRL_PARK;
1301
1302 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
1303 pbm->chip_version <= 0x1)
1304 tmp |= SCHIZO_PCICTRL_DTO_INT;
1305 else
1306 tmp &= ~SCHIZO_PCICTRL_DTO_INT;
1307
1308 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
1309 tmp |= (SCHIZO_PCICTRL_MRM_PREF |
1310 SCHIZO_PCICTRL_RDO_PREF |
1311 SCHIZO_PCICTRL_RDL_PREF);
1312
1313 schizo_write(pbm->pbm_regs + SCHIZO_PCI_CTRL, tmp);
1314
1315 tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_DIAG);
1316 tmp &= ~(SCHIZO_PCIDIAG_D_RTRYARB |
1317 SCHIZO_PCIDIAG_D_RETRY |
1318 SCHIZO_PCIDIAG_D_INTSYNC);
1319 schizo_write(pbm->pbm_regs + SCHIZO_PCI_DIAG, tmp);
1320
1321 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
1322 /* Clear prefetch lengths to workaround a bug in
1323 * Jalapeno...
1324 */
1325 tmp = (TOMATILLO_IOC_PART_WPENAB |
1326 (1 << TOMATILLO_IOC_PREF_OFF_SHIFT) |
1327 TOMATILLO_IOC_RDMULT_CPENAB |
1328 TOMATILLO_IOC_RDONE_CPENAB |
1329 TOMATILLO_IOC_RDLINE_CPENAB);
1330
1331 schizo_write(pbm->pbm_regs + TOMATILLO_PCI_IOC_CSR,
1332 tmp);
1333 }
1334 }
1335
1336 static int __init schizo_pbm_init(struct pci_controller_info *p,
1337 struct device_node *dp, u32 portid,
1338 int chip_type)
1339 {
1340 const struct linux_prom64_registers *regs;
1341 struct pci_pbm_info *pbm;
1342 const char *chipset_name;
1343 int is_pbm_a, err;
1344
1345 switch (chip_type) {
1346 case PBM_CHIP_TYPE_TOMATILLO:
1347 chipset_name = "TOMATILLO";
1348 break;
1349
1350 case PBM_CHIP_TYPE_SCHIZO_PLUS:
1351 chipset_name = "SCHIZO+";
1352 break;
1353
1354 case PBM_CHIP_TYPE_SCHIZO:
1355 default:
1356 chipset_name = "SCHIZO";
1357 break;
1358 };
1359
1360 /* For SCHIZO, three OBP regs:
1361 * 1) PBM controller regs
1362 * 2) Schizo front-end controller regs (same for both PBMs)
1363 * 3) PBM PCI config space
1364 *
1365 * For TOMATILLO, four OBP regs:
1366 * 1) PBM controller regs
1367 * 2) Tomatillo front-end controller regs
1368 * 3) PBM PCI config space
1369 * 4) Ichip regs
1370 */
1371 regs = of_get_property(dp, "reg", NULL);
1372
1373 is_pbm_a = ((regs[0].phys_addr & 0x00700000) == 0x00600000);
1374 if (is_pbm_a)
1375 pbm = &p->pbm_A;
1376 else
1377 pbm = &p->pbm_B;
1378
1379 pbm->next = pci_pbm_root;
1380 pci_pbm_root = pbm;
1381
1382 pbm->scan_bus = schizo_scan_bus;
1383 pbm->pci_ops = &sun4u_pci_ops;
1384 pbm->config_space_reg_bits = 8;
1385
1386 pbm->index = pci_num_pbms++;
1387
1388 pbm->portid = portid;
1389 pbm->parent = p;
1390 pbm->prom_node = dp;
1391
1392 pbm->chip_type = chip_type;
1393 pbm->chip_version = of_getintprop_default(dp, "version#", 0);
1394 pbm->chip_revision = of_getintprop_default(dp, "module-version#", 0);
1395
1396 pbm->pbm_regs = regs[0].phys_addr;
1397 pbm->controller_regs = regs[1].phys_addr - 0x10000UL;
1398
1399 if (chip_type == PBM_CHIP_TYPE_TOMATILLO)
1400 pbm->sync_reg = regs[3].phys_addr + 0x1a18UL;
1401
1402 pbm->name = dp->full_name;
1403
1404 printk("%s: %s PCI Bus Module ver[%x:%x]\n",
1405 pbm->name, chipset_name,
1406 pbm->chip_version, pbm->chip_revision);
1407
1408 schizo_pbm_hw_init(pbm);
1409
1410 pci_determine_mem_io_space(pbm);
1411
1412 pci_get_pbm_props(pbm);
1413
1414 err = schizo_pbm_iommu_init(pbm);
1415 if (err)
1416 return err;
1417
1418 schizo_pbm_strbuf_init(pbm);
1419
1420 return 0;
1421 }
1422
1423 static inline int portid_compare(u32 x, u32 y, int chip_type)
1424 {
1425 if (chip_type == PBM_CHIP_TYPE_TOMATILLO) {
1426 if (x == (y ^ 1))
1427 return 1;
1428 return 0;
1429 }
1430 return (x == y);
1431 }
1432
1433 static void __init __schizo_init(struct device_node *dp, char *model_name,
1434 int chip_type)
1435 {
1436 struct pci_controller_info *p;
1437 struct pci_pbm_info *pbm;
1438 struct iommu *iommu;
1439 u32 portid;
1440
1441 portid = of_getintprop_default(dp, "portid", 0xff);
1442
1443 for (pbm = pci_pbm_root; pbm; pbm = pbm->next) {
1444 if (portid_compare(pbm->portid, portid, chip_type)) {
1445 if (schizo_pbm_init(pbm->parent, dp,
1446 portid, chip_type))
1447 goto fatal_memory_error;
1448 return;
1449 }
1450 }
1451
1452 p = kzalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
1453 if (!p)
1454 goto fatal_memory_error;
1455
1456 iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC);
1457 if (!iommu)
1458 goto fatal_memory_error;
1459
1460 p->pbm_A.iommu = iommu;
1461
1462 iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC);
1463 if (!iommu)
1464 goto fatal_memory_error;
1465
1466 p->pbm_B.iommu = iommu;
1467
1468 if (schizo_pbm_init(p, dp, portid, chip_type))
1469 goto fatal_memory_error;
1470
1471 return;
1472
1473 fatal_memory_error:
1474 prom_printf("SCHIZO: Fatal memory allocation error.\n");
1475 prom_halt();
1476 }
1477
1478 void __init schizo_init(struct device_node *dp, char *model_name)
1479 {
1480 __schizo_init(dp, model_name, PBM_CHIP_TYPE_SCHIZO);
1481 }
1482
1483 void __init schizo_plus_init(struct device_node *dp, char *model_name)
1484 {
1485 __schizo_init(dp, model_name, PBM_CHIP_TYPE_SCHIZO_PLUS);
1486 }
1487
1488 void __init tomatillo_init(struct device_node *dp, char *model_name)
1489 {
1490 __schizo_init(dp, model_name, PBM_CHIP_TYPE_TOMATILLO);
1491 }
WRT350N Kernel Patches