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tools, slub: Fix off-by-one buffer corruption after readlink() call
[linux-2.6/linux-mips.git] / arch / sparc / kernel / pci_schizo.c
blobf030b02eddddd18f04db1c268735c37f040ca0e2
1 /* pci_schizo.c: SCHIZO/TOMATILLO specific PCI controller support.
2 *
3 * Copyright (C) 2001, 2002, 2003, 2007, 2008 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 #include <linux/of_device.h>
13
14 #include <asm/iommu.h>
15 #include <asm/irq.h>
16 #include <asm/pstate.h>
17 #include <asm/prom.h>
18 #include <asm/upa.h>
19
20 #include "pci_impl.h"
21 #include "iommu_common.h"
22
23 #define DRIVER_NAME "schizo"
24 #define PFX DRIVER_NAME ": "
25
26 /* This is a convention that at least Excalibur and Merlin
27 * follow. I suppose the SCHIZO used in Starcat and friends
28 * will do similar.
29 *
30 * The only way I could see this changing is if the newlink
31 * block requires more space in Schizo's address space than
32 * they predicted, thus requiring an address space reorg when
33 * the newer Schizo is taped out.
34 */
35
36 /* Streaming buffer control register. */
37 #define SCHIZO_STRBUF_CTRL_LPTR 0x00000000000000f0UL /* LRU Lock Pointer */
38 #define SCHIZO_STRBUF_CTRL_LENAB 0x0000000000000008UL /* LRU Lock Enable */
39 #define SCHIZO_STRBUF_CTRL_RRDIS 0x0000000000000004UL /* Rerun Disable */
40 #define SCHIZO_STRBUF_CTRL_DENAB 0x0000000000000002UL /* Diagnostic Mode Enable */
41 #define SCHIZO_STRBUF_CTRL_ENAB 0x0000000000000001UL /* Streaming Buffer Enable */
42
43 /* IOMMU control register. */
44 #define SCHIZO_IOMMU_CTRL_RESV 0xfffffffff9000000UL /* Reserved */
45 #define SCHIZO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL /* Translation Error Status */
46 #define SCHIZO_IOMMU_CTRL_XLTEERR 0x0000000001000000UL /* Translation Error encountered */
47 #define SCHIZO_IOMMU_CTRL_LCKEN 0x0000000000800000UL /* Enable translation locking */
48 #define SCHIZO_IOMMU_CTRL_LCKPTR 0x0000000000780000UL /* Translation lock pointer */
49 #define SCHIZO_IOMMU_CTRL_TSBSZ 0x0000000000070000UL /* TSB Size */
50 #define SCHIZO_IOMMU_TSBSZ_1K 0x0000000000000000UL /* TSB Table 1024 8-byte entries */
51 #define SCHIZO_IOMMU_TSBSZ_2K 0x0000000000010000UL /* TSB Table 2048 8-byte entries */
52 #define SCHIZO_IOMMU_TSBSZ_4K 0x0000000000020000UL /* TSB Table 4096 8-byte entries */
53 #define SCHIZO_IOMMU_TSBSZ_8K 0x0000000000030000UL /* TSB Table 8192 8-byte entries */
54 #define SCHIZO_IOMMU_TSBSZ_16K 0x0000000000040000UL /* TSB Table 16k 8-byte entries */
55 #define SCHIZO_IOMMU_TSBSZ_32K 0x0000000000050000UL /* TSB Table 32k 8-byte entries */
56 #define SCHIZO_IOMMU_TSBSZ_64K 0x0000000000060000UL /* TSB Table 64k 8-byte entries */
57 #define SCHIZO_IOMMU_TSBSZ_128K 0x0000000000070000UL /* TSB Table 128k 8-byte entries */
58 #define SCHIZO_IOMMU_CTRL_RESV2 0x000000000000fff8UL /* Reserved */
59 #define SCHIZO_IOMMU_CTRL_TBWSZ 0x0000000000000004UL /* Assumed page size, 0=8k 1=64k */
60 #define SCHIZO_IOMMU_CTRL_DENAB 0x0000000000000002UL /* Diagnostic mode enable */
61 #define SCHIZO_IOMMU_CTRL_ENAB 0x0000000000000001UL /* IOMMU Enable */
62
63 /* Schizo config space address format is nearly identical to
64 * that of PSYCHO:
65 *
66 * 32 24 23 16 15 11 10 8 7 2 1 0
67 * ---------------------------------------------------------
68 * |0 0 0 0 0 0 0 0 0| bus | device | function | reg | 0 0 |
69 * ---------------------------------------------------------
70 */
71 #define SCHIZO_CONFIG_BASE(PBM) ((PBM)->config_space)
72 #define SCHIZO_CONFIG_ENCODE(BUS, DEVFN, REG) \
73 (((unsigned long)(BUS) << 16) | \
74 ((unsigned long)(DEVFN) << 8) | \
75 ((unsigned long)(REG)))
76
77 static void *schizo_pci_config_mkaddr(struct pci_pbm_info *pbm,
78 unsigned char bus,
79 unsigned int devfn,
80 int where)
81 {
82 if (!pbm)
83 return NULL;
84 bus -= pbm->pci_first_busno;
85 return (void *)
86 (SCHIZO_CONFIG_BASE(pbm) |
87 SCHIZO_CONFIG_ENCODE(bus, devfn, where));
88 }
89
90 /* SCHIZO error handling support. */
91 enum schizo_error_type {
92 UE_ERR, CE_ERR, PCI_ERR, SAFARI_ERR
93 };
94
95 static DEFINE_SPINLOCK(stc_buf_lock);
96 static unsigned long stc_error_buf[128];
97 static unsigned long stc_tag_buf[16];
98 static unsigned long stc_line_buf[16];
99
100 #define SCHIZO_UE_INO 0x30 /* Uncorrectable ECC error */
101 #define SCHIZO_CE_INO 0x31 /* Correctable ECC error */
102 #define SCHIZO_PCIERR_A_INO 0x32 /* PBM A PCI bus error */
103 #define SCHIZO_PCIERR_B_INO 0x33 /* PBM B PCI bus error */
104 #define SCHIZO_SERR_INO 0x34 /* Safari interface error */
105
106 #define SCHIZO_STC_ERR 0xb800UL /* --> 0xba00 */
107 #define SCHIZO_STC_TAG 0xba00UL /* --> 0xba80 */
108 #define SCHIZO_STC_LINE 0xbb00UL /* --> 0xbb80 */
109
110 #define SCHIZO_STCERR_WRITE 0x2UL
111 #define SCHIZO_STCERR_READ 0x1UL
112
113 #define SCHIZO_STCTAG_PPN 0x3fffffff00000000UL
114 #define SCHIZO_STCTAG_VPN 0x00000000ffffe000UL
115 #define SCHIZO_STCTAG_VALID 0x8000000000000000UL
116 #define SCHIZO_STCTAG_READ 0x4000000000000000UL
117
118 #define SCHIZO_STCLINE_LINDX 0x0000000007800000UL
119 #define SCHIZO_STCLINE_SPTR 0x000000000007e000UL
120 #define SCHIZO_STCLINE_LADDR 0x0000000000001fc0UL
121 #define SCHIZO_STCLINE_EPTR 0x000000000000003fUL
122 #define SCHIZO_STCLINE_VALID 0x0000000000600000UL
123 #define SCHIZO_STCLINE_FOFN 0x0000000000180000UL
124
125 static void __schizo_check_stc_error_pbm(struct pci_pbm_info *pbm,
126 enum schizo_error_type type)
127 {
128 struct strbuf *strbuf = &pbm->stc;
129 unsigned long regbase = pbm->pbm_regs;
130 unsigned long err_base, tag_base, line_base;
131 u64 control;
132 int i;
133
134 err_base = regbase + SCHIZO_STC_ERR;
135 tag_base = regbase + SCHIZO_STC_TAG;
136 line_base = regbase + SCHIZO_STC_LINE;
137
138 spin_lock(&stc_buf_lock);
139
140 /* This is __REALLY__ dangerous. When we put the
141 * streaming buffer into diagnostic mode to probe
142 * it's tags and error status, we _must_ clear all
143 * of the line tag valid bits before re-enabling
144 * the streaming buffer. If any dirty data lives
145 * in the STC when we do this, we will end up
146 * invalidating it before it has a chance to reach
147 * main memory.
148 */
149 control = upa_readq(strbuf->strbuf_control);
150 upa_writeq((control | SCHIZO_STRBUF_CTRL_DENAB),
151 strbuf->strbuf_control);
152 for (i = 0; i < 128; i++) {
153 unsigned long val;
154
155 val = upa_readq(err_base + (i * 8UL));
156 upa_writeq(0UL, err_base + (i * 8UL));
157 stc_error_buf[i] = val;
158 }
159 for (i = 0; i < 16; i++) {
160 stc_tag_buf[i] = upa_readq(tag_base + (i * 8UL));
161 stc_line_buf[i] = upa_readq(line_base + (i * 8UL));
162 upa_writeq(0UL, tag_base + (i * 8UL));
163 upa_writeq(0UL, line_base + (i * 8UL));
164 }
165
166 /* OK, state is logged, exit diagnostic mode. */
167 upa_writeq(control, strbuf->strbuf_control);
168
169 for (i = 0; i < 16; i++) {
170 int j, saw_error, first, last;
171
172 saw_error = 0;
173 first = i * 8;
174 last = first + 8;
175 for (j = first; j < last; j++) {
176 unsigned long errval = stc_error_buf[j];
177 if (errval != 0) {
178 saw_error++;
179 printk("%s: STC_ERR(%d)[wr(%d)rd(%d)]\n",
180 pbm->name,
181 j,
182 (errval & SCHIZO_STCERR_WRITE) ? 1 : 0,
183 (errval & SCHIZO_STCERR_READ) ? 1 : 0);
184 }
185 }
186 if (saw_error != 0) {
187 unsigned long tagval = stc_tag_buf[i];
188 unsigned long lineval = stc_line_buf[i];
189 printk("%s: STC_TAG(%d)[PA(%016lx)VA(%08lx)V(%d)R(%d)]\n",
190 pbm->name,
191 i,
192 ((tagval & SCHIZO_STCTAG_PPN) >> 19UL),
193 (tagval & SCHIZO_STCTAG_VPN),
194 ((tagval & SCHIZO_STCTAG_VALID) ? 1 : 0),
195 ((tagval & SCHIZO_STCTAG_READ) ? 1 : 0));
196
197 /* XXX Should spit out per-bank error information... -DaveM */
198 printk("%s: STC_LINE(%d)[LIDX(%lx)SP(%lx)LADDR(%lx)EP(%lx)"
199 "V(%d)FOFN(%d)]\n",
200 pbm->name,
201 i,
202 ((lineval & SCHIZO_STCLINE_LINDX) >> 23UL),
203 ((lineval & SCHIZO_STCLINE_SPTR) >> 13UL),
204 ((lineval & SCHIZO_STCLINE_LADDR) >> 6UL),
205 ((lineval & SCHIZO_STCLINE_EPTR) >> 0UL),
206 ((lineval & SCHIZO_STCLINE_VALID) ? 1 : 0),
207 ((lineval & SCHIZO_STCLINE_FOFN) ? 1 : 0));
208 }
209 }
210
211 spin_unlock(&stc_buf_lock);
212 }
213
214 /* IOMMU is per-PBM in Schizo, so interrogate both for anonymous
215 * controller level errors.
216 */
217
218 #define SCHIZO_IOMMU_TAG 0xa580UL
219 #define SCHIZO_IOMMU_DATA 0xa600UL
220
221 #define SCHIZO_IOMMU_TAG_CTXT 0x0000001ffe000000UL
222 #define SCHIZO_IOMMU_TAG_ERRSTS 0x0000000001800000UL
223 #define SCHIZO_IOMMU_TAG_ERR 0x0000000000400000UL
224 #define SCHIZO_IOMMU_TAG_WRITE 0x0000000000200000UL
225 #define SCHIZO_IOMMU_TAG_STREAM 0x0000000000100000UL
226 #define SCHIZO_IOMMU_TAG_SIZE 0x0000000000080000UL
227 #define SCHIZO_IOMMU_TAG_VPAGE 0x000000000007ffffUL
228
229 #define SCHIZO_IOMMU_DATA_VALID 0x0000000100000000UL
230 #define SCHIZO_IOMMU_DATA_CACHE 0x0000000040000000UL
231 #define SCHIZO_IOMMU_DATA_PPAGE 0x000000003fffffffUL
232
233 static void schizo_check_iommu_error_pbm(struct pci_pbm_info *pbm,
234 enum schizo_error_type type)
235 {
236 struct iommu *iommu = pbm->iommu;
237 unsigned long iommu_tag[16];
238 unsigned long iommu_data[16];
239 unsigned long flags;
240 u64 control;
241 int i;
242
243 spin_lock_irqsave(&iommu->lock, flags);
244 control = upa_readq(iommu->iommu_control);
245 if (control & SCHIZO_IOMMU_CTRL_XLTEERR) {
246 unsigned long base;
247 char *type_string;
248
249 /* Clear the error encountered bit. */
250 control &= ~SCHIZO_IOMMU_CTRL_XLTEERR;
251 upa_writeq(control, iommu->iommu_control);
252
253 switch((control & SCHIZO_IOMMU_CTRL_XLTESTAT) >> 25UL) {
254 case 0:
255 type_string = "Protection Error";
256 break;
257 case 1:
258 type_string = "Invalid Error";
259 break;
260 case 2:
261 type_string = "TimeOut Error";
262 break;
263 case 3:
264 default:
265 type_string = "ECC Error";
266 break;
267 }
268 printk("%s: IOMMU Error, type[%s]\n",
269 pbm->name, type_string);
270
271 /* Put the IOMMU into diagnostic mode and probe
272 * it's TLB for entries with error status.
273 *
274 * It is very possible for another DVMA to occur
275 * while we do this probe, and corrupt the system
276 * further. But we are so screwed at this point
277 * that we are likely to crash hard anyways, so
278 * get as much diagnostic information to the
279 * console as we can.
280 */
281 upa_writeq(control | SCHIZO_IOMMU_CTRL_DENAB,
282 iommu->iommu_control);
283
284 base = pbm->pbm_regs;
285
286 for (i = 0; i < 16; i++) {
287 iommu_tag[i] =
288 upa_readq(base + SCHIZO_IOMMU_TAG + (i * 8UL));
289 iommu_data[i] =
290 upa_readq(base + SCHIZO_IOMMU_DATA + (i * 8UL));
291
292 /* Now clear out the entry. */
293 upa_writeq(0, base + SCHIZO_IOMMU_TAG + (i * 8UL));
294 upa_writeq(0, base + SCHIZO_IOMMU_DATA + (i * 8UL));
295 }
296
297 /* Leave diagnostic mode. */
298 upa_writeq(control, iommu->iommu_control);
299
300 for (i = 0; i < 16; i++) {
301 unsigned long tag, data;
302
303 tag = iommu_tag[i];
304 if (!(tag & SCHIZO_IOMMU_TAG_ERR))
305 continue;
306
307 data = iommu_data[i];
308 switch((tag & SCHIZO_IOMMU_TAG_ERRSTS) >> 23UL) {
309 case 0:
310 type_string = "Protection Error";
311 break;
312 case 1:
313 type_string = "Invalid Error";
314 break;
315 case 2:
316 type_string = "TimeOut Error";
317 break;
318 case 3:
319 default:
320 type_string = "ECC Error";
321 break;
322 }
323 printk("%s: IOMMU TAG(%d)[error(%s) ctx(%x) wr(%d) str(%d) "
324 "sz(%dK) vpg(%08lx)]\n",
325 pbm->name, i, type_string,
326 (int)((tag & SCHIZO_IOMMU_TAG_CTXT) >> 25UL),
327 ((tag & SCHIZO_IOMMU_TAG_WRITE) ? 1 : 0),
328 ((tag & SCHIZO_IOMMU_TAG_STREAM) ? 1 : 0),
329 ((tag & SCHIZO_IOMMU_TAG_SIZE) ? 64 : 8),
330 (tag & SCHIZO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT);
331 printk("%s: IOMMU DATA(%d)[valid(%d) cache(%d) ppg(%016lx)]\n",
332 pbm->name, i,
333 ((data & SCHIZO_IOMMU_DATA_VALID) ? 1 : 0),
334 ((data & SCHIZO_IOMMU_DATA_CACHE) ? 1 : 0),
335 (data & SCHIZO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT);
336 }
337 }
338 if (pbm->stc.strbuf_enabled)
339 __schizo_check_stc_error_pbm(pbm, type);
340 spin_unlock_irqrestore(&iommu->lock, flags);
341 }
342
343 static void schizo_check_iommu_error(struct pci_pbm_info *pbm,
344 enum schizo_error_type type)
345 {
346 schizo_check_iommu_error_pbm(pbm, type);
347 if (pbm->sibling)
348 schizo_check_iommu_error_pbm(pbm->sibling, type);
349 }
350
351 /* Uncorrectable ECC error status gathering. */
352 #define SCHIZO_UE_AFSR 0x10030UL
353 #define SCHIZO_UE_AFAR 0x10038UL
354
355 #define SCHIZO_UEAFSR_PPIO 0x8000000000000000UL /* Safari */
356 #define SCHIZO_UEAFSR_PDRD 0x4000000000000000UL /* Safari/Tomatillo */
357 #define SCHIZO_UEAFSR_PDWR 0x2000000000000000UL /* Safari */
358 #define SCHIZO_UEAFSR_SPIO 0x1000000000000000UL /* Safari */
359 #define SCHIZO_UEAFSR_SDMA 0x0800000000000000UL /* Safari/Tomatillo */
360 #define SCHIZO_UEAFSR_ERRPNDG 0x0300000000000000UL /* Safari */
361 #define SCHIZO_UEAFSR_BMSK 0x000003ff00000000UL /* Safari */
362 #define SCHIZO_UEAFSR_QOFF 0x00000000c0000000UL /* Safari/Tomatillo */
363 #define SCHIZO_UEAFSR_AID 0x000000001f000000UL /* Safari/Tomatillo */
364 #define SCHIZO_UEAFSR_PARTIAL 0x0000000000800000UL /* Safari */
365 #define SCHIZO_UEAFSR_OWNEDIN 0x0000000000400000UL /* Safari */
366 #define SCHIZO_UEAFSR_MTAGSYND 0x00000000000f0000UL /* Safari */
367 #define SCHIZO_UEAFSR_MTAG 0x000000000000e000UL /* Safari */
368 #define SCHIZO_UEAFSR_ECCSYND 0x00000000000001ffUL /* Safari */
369
370 static irqreturn_t schizo_ue_intr(int irq, void *dev_id)
371 {
372 struct pci_pbm_info *pbm = dev_id;
373 unsigned long afsr_reg = pbm->controller_regs + SCHIZO_UE_AFSR;
374 unsigned long afar_reg = pbm->controller_regs + SCHIZO_UE_AFAR;
375 unsigned long afsr, afar, error_bits;
376 int reported, limit;
377
378 /* Latch uncorrectable error status. */
379 afar = upa_readq(afar_reg);
380
381 /* If either of the error pending bits are set in the
382 * AFSR, the error status is being actively updated by
383 * the hardware and we must re-read to get a clean value.
384 */
385 limit = 1000;
386 do {
387 afsr = upa_readq(afsr_reg);
388 } while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);
389
390 /* Clear the primary/secondary error status bits. */
391 error_bits = afsr &
392 (SCHIZO_UEAFSR_PPIO | SCHIZO_UEAFSR_PDRD | SCHIZO_UEAFSR_PDWR |
393 SCHIZO_UEAFSR_SPIO | SCHIZO_UEAFSR_SDMA);
394 if (!error_bits)
395 return IRQ_NONE;
396 upa_writeq(error_bits, afsr_reg);
397
398 /* Log the error. */
399 printk("%s: Uncorrectable Error, primary error type[%s]\n",
400 pbm->name,
401 (((error_bits & SCHIZO_UEAFSR_PPIO) ?
402 "PIO" :
403 ((error_bits & SCHIZO_UEAFSR_PDRD) ?
404 "DMA Read" :
405 ((error_bits & SCHIZO_UEAFSR_PDWR) ?
406 "DMA Write" : "???")))));
407 printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n",
408 pbm->name,
409 (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
410 (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
411 (afsr & SCHIZO_UEAFSR_AID) >> 24UL);
412 printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n",
413 pbm->name,
414 (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
415 (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
416 (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
417 (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
418 (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);
419 printk("%s: UE AFAR [%016lx]\n", pbm->name, afar);
420 printk("%s: UE Secondary errors [", pbm->name);
421 reported = 0;
422 if (afsr & SCHIZO_UEAFSR_SPIO) {
423 reported++;
424 printk("(PIO)");
425 }
426 if (afsr & SCHIZO_UEAFSR_SDMA) {
427 reported++;
428 printk("(DMA)");
429 }
430 if (!reported)
431 printk("(none)");
432 printk("]\n");
433
434 /* Interrogate IOMMU for error status. */
435 schizo_check_iommu_error(pbm, UE_ERR);
436
437 return IRQ_HANDLED;
438 }
439
440 #define SCHIZO_CE_AFSR 0x10040UL
441 #define SCHIZO_CE_AFAR 0x10048UL
442
443 #define SCHIZO_CEAFSR_PPIO 0x8000000000000000UL
444 #define SCHIZO_CEAFSR_PDRD 0x4000000000000000UL
445 #define SCHIZO_CEAFSR_PDWR 0x2000000000000000UL
446 #define SCHIZO_CEAFSR_SPIO 0x1000000000000000UL
447 #define SCHIZO_CEAFSR_SDMA 0x0800000000000000UL
448 #define SCHIZO_CEAFSR_ERRPNDG 0x0300000000000000UL
449 #define SCHIZO_CEAFSR_BMSK 0x000003ff00000000UL
450 #define SCHIZO_CEAFSR_QOFF 0x00000000c0000000UL
451 #define SCHIZO_CEAFSR_AID 0x000000001f000000UL
452 #define SCHIZO_CEAFSR_PARTIAL 0x0000000000800000UL
453 #define SCHIZO_CEAFSR_OWNEDIN 0x0000000000400000UL
454 #define SCHIZO_CEAFSR_MTAGSYND 0x00000000000f0000UL
455 #define SCHIZO_CEAFSR_MTAG 0x000000000000e000UL
456 #define SCHIZO_CEAFSR_ECCSYND 0x00000000000001ffUL
457
458 static irqreturn_t schizo_ce_intr(int irq, void *dev_id)
459 {
460 struct pci_pbm_info *pbm = dev_id;
461 unsigned long afsr_reg = pbm->controller_regs + SCHIZO_CE_AFSR;
462 unsigned long afar_reg = pbm->controller_regs + SCHIZO_CE_AFAR;
463 unsigned long afsr, afar, error_bits;
464 int reported, limit;
465
466 /* Latch error status. */
467 afar = upa_readq(afar_reg);
468
469 /* If either of the error pending bits are set in the
470 * AFSR, the error status is being actively updated by
471 * the hardware and we must re-read to get a clean value.
472 */
473 limit = 1000;
474 do {
475 afsr = upa_readq(afsr_reg);
476 } while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit);
477
478 /* Clear primary/secondary error status bits. */
479 error_bits = afsr &
480 (SCHIZO_CEAFSR_PPIO | SCHIZO_CEAFSR_PDRD | SCHIZO_CEAFSR_PDWR |
481 SCHIZO_CEAFSR_SPIO | SCHIZO_CEAFSR_SDMA);
482 if (!error_bits)
483 return IRQ_NONE;
484 upa_writeq(error_bits, afsr_reg);
485
486 /* Log the error. */
487 printk("%s: Correctable Error, primary error type[%s]\n",
488 pbm->name,
489 (((error_bits & SCHIZO_CEAFSR_PPIO) ?
490 "PIO" :
491 ((error_bits & SCHIZO_CEAFSR_PDRD) ?
492 "DMA Read" :
493 ((error_bits & SCHIZO_CEAFSR_PDWR) ?
494 "DMA Write" : "???")))));
495
496 /* XXX Use syndrome and afar to print out module string just like
497 * XXX UDB CE trap handler does... -DaveM
498 */
499 printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n",
500 pbm->name,
501 (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL,
502 (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL,
503 (afsr & SCHIZO_UEAFSR_AID) >> 24UL);
504 printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n",
505 pbm->name,
506 (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0,
507 (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0,
508 (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL,
509 (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL,
510 (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL);
511 printk("%s: CE AFAR [%016lx]\n", pbm->name, afar);
512 printk("%s: CE Secondary errors [", pbm->name);
513 reported = 0;
514 if (afsr & SCHIZO_CEAFSR_SPIO) {
515 reported++;
516 printk("(PIO)");
517 }
518 if (afsr & SCHIZO_CEAFSR_SDMA) {
519 reported++;
520 printk("(DMA)");
521 }
522 if (!reported)
523 printk("(none)");
524 printk("]\n");
525
526 return IRQ_HANDLED;
527 }
528
529 #define SCHIZO_PCI_AFSR 0x2010UL
530 #define SCHIZO_PCI_AFAR 0x2018UL
531
532 #define SCHIZO_PCIAFSR_PMA 0x8000000000000000UL /* Schizo/Tomatillo */
533 #define SCHIZO_PCIAFSR_PTA 0x4000000000000000UL /* Schizo/Tomatillo */
534 #define SCHIZO_PCIAFSR_PRTRY 0x2000000000000000UL /* Schizo/Tomatillo */
535 #define SCHIZO_PCIAFSR_PPERR 0x1000000000000000UL /* Schizo/Tomatillo */
536 #define SCHIZO_PCIAFSR_PTTO 0x0800000000000000UL /* Schizo/Tomatillo */
537 #define SCHIZO_PCIAFSR_PUNUS 0x0400000000000000UL /* Schizo */
538 #define SCHIZO_PCIAFSR_SMA 0x0200000000000000UL /* Schizo/Tomatillo */
539 #define SCHIZO_PCIAFSR_STA 0x0100000000000000UL /* Schizo/Tomatillo */
540 #define SCHIZO_PCIAFSR_SRTRY 0x0080000000000000UL /* Schizo/Tomatillo */
541 #define SCHIZO_PCIAFSR_SPERR 0x0040000000000000UL /* Schizo/Tomatillo */
542 #define SCHIZO_PCIAFSR_STTO 0x0020000000000000UL /* Schizo/Tomatillo */
543 #define SCHIZO_PCIAFSR_SUNUS 0x0010000000000000UL /* Schizo */
544 #define SCHIZO_PCIAFSR_BMSK 0x000003ff00000000UL /* Schizo/Tomatillo */
545 #define SCHIZO_PCIAFSR_BLK 0x0000000080000000UL /* Schizo/Tomatillo */
546 #define SCHIZO_PCIAFSR_CFG 0x0000000040000000UL /* Schizo/Tomatillo */
547 #define SCHIZO_PCIAFSR_MEM 0x0000000020000000UL /* Schizo/Tomatillo */
548 #define SCHIZO_PCIAFSR_IO 0x0000000010000000UL /* Schizo/Tomatillo */
549
550 #define SCHIZO_PCI_CTRL (0x2000UL)
551 #define SCHIZO_PCICTRL_BUS_UNUS (1UL << 63UL) /* Safari */
552 #define SCHIZO_PCICTRL_DTO_INT (1UL << 61UL) /* Tomatillo */
553 #define SCHIZO_PCICTRL_ARB_PRIO (0x1ff << 52UL) /* Tomatillo */
554 #define SCHIZO_PCICTRL_ESLCK (1UL << 51UL) /* Safari */
555 #define SCHIZO_PCICTRL_ERRSLOT (7UL << 48UL) /* Safari */
556 #define SCHIZO_PCICTRL_TTO_ERR (1UL << 38UL) /* Safari/Tomatillo */
557 #define SCHIZO_PCICTRL_RTRY_ERR (1UL << 37UL) /* Safari/Tomatillo */
558 #define SCHIZO_PCICTRL_DTO_ERR (1UL << 36UL) /* Safari/Tomatillo */
559 #define SCHIZO_PCICTRL_SBH_ERR (1UL << 35UL) /* Safari */
560 #define SCHIZO_PCICTRL_SERR (1UL << 34UL) /* Safari/Tomatillo */
561 #define SCHIZO_PCICTRL_PCISPD (1UL << 33UL) /* Safari */
562 #define SCHIZO_PCICTRL_MRM_PREF (1UL << 30UL) /* Tomatillo */
563 #define SCHIZO_PCICTRL_RDO_PREF (1UL << 29UL) /* Tomatillo */
564 #define SCHIZO_PCICTRL_RDL_PREF (1UL << 28UL) /* Tomatillo */
565 #define SCHIZO_PCICTRL_PTO (3UL << 24UL) /* Safari/Tomatillo */
566 #define SCHIZO_PCICTRL_PTO_SHIFT 24UL
567 #define SCHIZO_PCICTRL_TRWSW (7UL << 21UL) /* Tomatillo */
568 #define SCHIZO_PCICTRL_F_TGT_A (1UL << 20UL) /* Tomatillo */
569 #define SCHIZO_PCICTRL_S_DTO_INT (1UL << 19UL) /* Safari */
570 #define SCHIZO_PCICTRL_F_TGT_RT (1UL << 19UL) /* Tomatillo */
571 #define SCHIZO_PCICTRL_SBH_INT (1UL << 18UL) /* Safari */
572 #define SCHIZO_PCICTRL_T_DTO_INT (1UL << 18UL) /* Tomatillo */
573 #define SCHIZO_PCICTRL_EEN (1UL << 17UL) /* Safari/Tomatillo */
574 #define SCHIZO_PCICTRL_PARK (1UL << 16UL) /* Safari/Tomatillo */
575 #define SCHIZO_PCICTRL_PCIRST (1UL << 8UL) /* Safari */
576 #define SCHIZO_PCICTRL_ARB_S (0x3fUL << 0UL) /* Safari */
577 #define SCHIZO_PCICTRL_ARB_T (0xffUL << 0UL) /* Tomatillo */
578
579 static irqreturn_t schizo_pcierr_intr_other(struct pci_pbm_info *pbm)
580 {
581 unsigned long csr_reg, csr, csr_error_bits;
582 irqreturn_t ret = IRQ_NONE;
583 u16 stat;
584
585 csr_reg = pbm->pbm_regs + SCHIZO_PCI_CTRL;
586 csr = upa_readq(csr_reg);
587 csr_error_bits =
588 csr & (SCHIZO_PCICTRL_BUS_UNUS |
589 SCHIZO_PCICTRL_TTO_ERR |
590 SCHIZO_PCICTRL_RTRY_ERR |
591 SCHIZO_PCICTRL_DTO_ERR |
592 SCHIZO_PCICTRL_SBH_ERR |
593 SCHIZO_PCICTRL_SERR);
594 if (csr_error_bits) {
595 /* Clear the errors. */
596 upa_writeq(csr, csr_reg);
597
598 /* Log 'em. */
599 if (csr_error_bits & SCHIZO_PCICTRL_BUS_UNUS)
600 printk("%s: Bus unusable error asserted.\n",
601 pbm->name);
602 if (csr_error_bits & SCHIZO_PCICTRL_TTO_ERR)
603 printk("%s: PCI TRDY# timeout error asserted.\n",
604 pbm->name);
605 if (csr_error_bits & SCHIZO_PCICTRL_RTRY_ERR)
606 printk("%s: PCI excessive retry error asserted.\n",
607 pbm->name);
608 if (csr_error_bits & SCHIZO_PCICTRL_DTO_ERR)
609 printk("%s: PCI discard timeout error asserted.\n",
610 pbm->name);
611 if (csr_error_bits & SCHIZO_PCICTRL_SBH_ERR)
612 printk("%s: PCI streaming byte hole error asserted.\n",
613 pbm->name);
614 if (csr_error_bits & SCHIZO_PCICTRL_SERR)
615 printk("%s: PCI SERR signal asserted.\n",
616 pbm->name);
617 ret = IRQ_HANDLED;
618 }
619 pci_read_config_word(pbm->pci_bus->self, PCI_STATUS, &stat);
620 if (stat & (PCI_STATUS_PARITY |
621 PCI_STATUS_SIG_TARGET_ABORT |
622 PCI_STATUS_REC_TARGET_ABORT |
623 PCI_STATUS_REC_MASTER_ABORT |
624 PCI_STATUS_SIG_SYSTEM_ERROR)) {
625 printk("%s: PCI bus error, PCI_STATUS[%04x]\n",
626 pbm->name, stat);
627 pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff);
628 ret = IRQ_HANDLED;
629 }
630 return ret;
631 }
632
633 static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id)
634 {
635 struct pci_pbm_info *pbm = dev_id;
636 unsigned long afsr_reg, afar_reg, base;
637 unsigned long afsr, afar, error_bits;
638 int reported;
639
640 base = pbm->pbm_regs;
641
642 afsr_reg = base + SCHIZO_PCI_AFSR;
643 afar_reg = base + SCHIZO_PCI_AFAR;
644
645 /* Latch error status. */
646 afar = upa_readq(afar_reg);
647 afsr = upa_readq(afsr_reg);
648
649 /* Clear primary/secondary error status bits. */
650 error_bits = afsr &
651 (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
652 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
653 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
654 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
655 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
656 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS);
657 if (!error_bits)
658 return schizo_pcierr_intr_other(pbm);
659 upa_writeq(error_bits, afsr_reg);
660
661 /* Log the error. */
662 printk("%s: PCI Error, primary error type[%s]\n",
663 pbm->name,
664 (((error_bits & SCHIZO_PCIAFSR_PMA) ?
665 "Master Abort" :
666 ((error_bits & SCHIZO_PCIAFSR_PTA) ?
667 "Target Abort" :
668 ((error_bits & SCHIZO_PCIAFSR_PRTRY) ?
669 "Excessive Retries" :
670 ((error_bits & SCHIZO_PCIAFSR_PPERR) ?
671 "Parity Error" :
672 ((error_bits & SCHIZO_PCIAFSR_PTTO) ?
673 "Timeout" :
674 ((error_bits & SCHIZO_PCIAFSR_PUNUS) ?
675 "Bus Unusable" : "???"))))))));
676 printk("%s: bytemask[%04lx] was_block(%d) space(%s)\n",
677 pbm->name,
678 (afsr & SCHIZO_PCIAFSR_BMSK) >> 32UL,
679 (afsr & SCHIZO_PCIAFSR_BLK) ? 1 : 0,
680 ((afsr & SCHIZO_PCIAFSR_CFG) ?
681 "Config" :
682 ((afsr & SCHIZO_PCIAFSR_MEM) ?
683 "Memory" :
684 ((afsr & SCHIZO_PCIAFSR_IO) ?
685 "I/O" : "???"))));
686 printk("%s: PCI AFAR [%016lx]\n",
687 pbm->name, afar);
688 printk("%s: PCI Secondary errors [",
689 pbm->name);
690 reported = 0;
691 if (afsr & SCHIZO_PCIAFSR_SMA) {
692 reported++;
693 printk("(Master Abort)");
694 }
695 if (afsr & SCHIZO_PCIAFSR_STA) {
696 reported++;
697 printk("(Target Abort)");
698 }
699 if (afsr & SCHIZO_PCIAFSR_SRTRY) {
700 reported++;
701 printk("(Excessive Retries)");
702 }
703 if (afsr & SCHIZO_PCIAFSR_SPERR) {
704 reported++;
705 printk("(Parity Error)");
706 }
707 if (afsr & SCHIZO_PCIAFSR_STTO) {
708 reported++;
709 printk("(Timeout)");
710 }
711 if (afsr & SCHIZO_PCIAFSR_SUNUS) {
712 reported++;
713 printk("(Bus Unusable)");
714 }
715 if (!reported)
716 printk("(none)");
717 printk("]\n");
718
719 /* For the error types shown, scan PBM's PCI bus for devices
720 * which have logged that error type.
721 */
722
723 /* If we see a Target Abort, this could be the result of an
724 * IOMMU translation error of some sort. It is extremely
725 * useful to log this information as usually it indicates
726 * a bug in the IOMMU support code or a PCI device driver.
727 */
728 if (error_bits & (SCHIZO_PCIAFSR_PTA | SCHIZO_PCIAFSR_STA)) {
729 schizo_check_iommu_error(pbm, PCI_ERR);
730 pci_scan_for_target_abort(pbm, pbm->pci_bus);
731 }
732 if (error_bits & (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_SMA))
733 pci_scan_for_master_abort(pbm, pbm->pci_bus);
734
735 /* For excessive retries, PSYCHO/PBM will abort the device
736 * and there is no way to specifically check for excessive
737 * retries in the config space status registers. So what
738 * we hope is that we'll catch it via the master/target
739 * abort events.
740 */
741
742 if (error_bits & (SCHIZO_PCIAFSR_PPERR | SCHIZO_PCIAFSR_SPERR))
743 pci_scan_for_parity_error(pbm, pbm->pci_bus);
744
745 return IRQ_HANDLED;
746 }
747
748 #define SCHIZO_SAFARI_ERRLOG 0x10018UL
749
750 #define SAFARI_ERRLOG_ERROUT 0x8000000000000000UL
751
752 #define BUS_ERROR_BADCMD 0x4000000000000000UL /* Schizo/Tomatillo */
753 #define BUS_ERROR_SSMDIS 0x2000000000000000UL /* Safari */
754 #define BUS_ERROR_BADMA 0x1000000000000000UL /* Safari */
755 #define BUS_ERROR_BADMB 0x0800000000000000UL /* Safari */
756 #define BUS_ERROR_BADMC 0x0400000000000000UL /* Safari */
757 #define BUS_ERROR_SNOOP_GR 0x0000000000200000UL /* Tomatillo */
758 #define BUS_ERROR_SNOOP_PCI 0x0000000000100000UL /* Tomatillo */
759 #define BUS_ERROR_SNOOP_RD 0x0000000000080000UL /* Tomatillo */
760 #define BUS_ERROR_SNOOP_RDS 0x0000000000020000UL /* Tomatillo */
761 #define BUS_ERROR_SNOOP_RDSA 0x0000000000010000UL /* Tomatillo */
762 #define BUS_ERROR_SNOOP_OWN 0x0000000000008000UL /* Tomatillo */
763 #define BUS_ERROR_SNOOP_RDO 0x0000000000004000UL /* Tomatillo */
764 #define BUS_ERROR_CPU1PS 0x0000000000002000UL /* Safari */
765 #define BUS_ERROR_WDATA_PERR 0x0000000000002000UL /* Tomatillo */
766 #define BUS_ERROR_CPU1PB 0x0000000000001000UL /* Safari */
767 #define BUS_ERROR_CTRL_PERR 0x0000000000001000UL /* Tomatillo */
768 #define BUS_ERROR_CPU0PS 0x0000000000000800UL /* Safari */
769 #define BUS_ERROR_SNOOP_ERR 0x0000000000000800UL /* Tomatillo */
770 #define BUS_ERROR_CPU0PB 0x0000000000000400UL /* Safari */
771 #define BUS_ERROR_JBUS_ILL_B 0x0000000000000400UL /* Tomatillo */
772 #define BUS_ERROR_CIQTO 0x0000000000000200UL /* Safari */
773 #define BUS_ERROR_LPQTO 0x0000000000000100UL /* Safari */
774 #define BUS_ERROR_JBUS_ILL_C 0x0000000000000100UL /* Tomatillo */
775 #define BUS_ERROR_SFPQTO 0x0000000000000080UL /* Safari */
776 #define BUS_ERROR_UFPQTO 0x0000000000000040UL /* Safari */
777 #define BUS_ERROR_RD_PERR 0x0000000000000040UL /* Tomatillo */
778 #define BUS_ERROR_APERR 0x0000000000000020UL /* Safari/Tomatillo */
779 #define BUS_ERROR_UNMAP 0x0000000000000010UL /* Safari/Tomatillo */
780 #define BUS_ERROR_BUSERR 0x0000000000000004UL /* Safari/Tomatillo */
781 #define BUS_ERROR_TIMEOUT 0x0000000000000002UL /* Safari/Tomatillo */
782 #define BUS_ERROR_ILL 0x0000000000000001UL /* Safari */
783
784 /* We only expect UNMAP errors here. The rest of the Safari errors
785 * are marked fatal and thus cause a system reset.
786 */
787 static irqreturn_t schizo_safarierr_intr(int irq, void *dev_id)
788 {
789 struct pci_pbm_info *pbm = dev_id;
790 u64 errlog;
791
792 errlog = upa_readq(pbm->controller_regs + SCHIZO_SAFARI_ERRLOG);
793 upa_writeq(errlog & ~(SAFARI_ERRLOG_ERROUT),
794 pbm->controller_regs + SCHIZO_SAFARI_ERRLOG);
795
796 if (!(errlog & BUS_ERROR_UNMAP)) {
797 printk("%s: Unexpected Safari/JBUS error interrupt, errlog[%016llx]\n",
798 pbm->name, errlog);
799
800 return IRQ_HANDLED;
801 }
802
803 printk("%s: Safari/JBUS interrupt, UNMAPPED error, interrogating IOMMUs.\n",
804 pbm->name);
805 schizo_check_iommu_error(pbm, SAFARI_ERR);
806
807 return IRQ_HANDLED;
808 }
809
810 /* Nearly identical to PSYCHO equivalents... */
811 #define SCHIZO_ECC_CTRL 0x10020UL
812 #define SCHIZO_ECCCTRL_EE 0x8000000000000000UL /* Enable ECC Checking */
813 #define SCHIZO_ECCCTRL_UE 0x4000000000000000UL /* Enable UE Interrupts */
814 #define SCHIZO_ECCCTRL_CE 0x2000000000000000UL /* Enable CE INterrupts */
815
816 #define SCHIZO_SAFARI_ERRCTRL 0x10008UL
817 #define SCHIZO_SAFERRCTRL_EN 0x8000000000000000UL
818 #define SCHIZO_SAFARI_IRQCTRL 0x10010UL
819 #define SCHIZO_SAFIRQCTRL_EN 0x8000000000000000UL
820
821 static int pbm_routes_this_ino(struct pci_pbm_info *pbm, u32 ino)
822 {
823 ino &= IMAP_INO;
824
825 if (pbm->ino_bitmap & (1UL << ino))
826 return 1;
827
828 return 0;
829 }
830
831 /* How the Tomatillo IRQs are routed around is pure guesswork here.
832 *
833 * All the Tomatillo devices I see in prtconf dumps seem to have only
834 * a single PCI bus unit attached to it. It would seem they are separate
835 * devices because their PortID (ie. JBUS ID) values are all different
836 * and thus the registers are mapped to totally different locations.
837 *
838 * However, two Tomatillo's look "similar" in that the only difference
839 * in their PortID is the lowest bit.
840 *
841 * So if we were to ignore this lower bit, it certainly looks like two
842 * PCI bus units of the same Tomatillo. I still have not really
843 * figured this out...
844 */
845 static void tomatillo_register_error_handlers(struct pci_pbm_info *pbm)
846 {
847 struct platform_device *op = of_find_device_by_node(pbm->op->dev.of_node);
848 u64 tmp, err_mask, err_no_mask;
849 int err;
850
851 /* Tomatillo IRQ property layout is:
852 * 0: PCIERR
853 * 1: UE ERR
854 * 2: CE ERR
855 * 3: SERR
856 * 4: POWER FAIL?
857 */
858
859 if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) {
860 err = request_irq(op->archdata.irqs[1], schizo_ue_intr, 0,
861 "TOMATILLO_UE", pbm);
862 if (err)
863 printk(KERN_WARNING "%s: Could not register UE, "
864 "err=%d\n", pbm->name, err);
865 }
866 if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) {
867 err = request_irq(op->archdata.irqs[2], schizo_ce_intr, 0,
868 "TOMATILLO_CE", pbm);
869 if (err)
870 printk(KERN_WARNING "%s: Could not register CE, "
871 "err=%d\n", pbm->name, err);
872 }
873 err = 0;
874 if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) {
875 err = request_irq(op->archdata.irqs[0], schizo_pcierr_intr, 0,
876 "TOMATILLO_PCIERR", pbm);
877 } else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) {
878 err = request_irq(op->archdata.irqs[0], schizo_pcierr_intr, 0,
879 "TOMATILLO_PCIERR", pbm);
880 }
881 if (err)
882 printk(KERN_WARNING "%s: Could not register PCIERR, "
883 "err=%d\n", pbm->name, err);
884
885 if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) {
886 err = request_irq(op->archdata.irqs[3], schizo_safarierr_intr, 0,
887 "TOMATILLO_SERR", pbm);
888 if (err)
889 printk(KERN_WARNING "%s: Could not register SERR, "
890 "err=%d\n", pbm->name, err);
891 }
892
893 /* Enable UE and CE interrupts for controller. */
894 upa_writeq((SCHIZO_ECCCTRL_EE |
895 SCHIZO_ECCCTRL_UE |
896 SCHIZO_ECCCTRL_CE), pbm->controller_regs + SCHIZO_ECC_CTRL);
897
898 /* Enable PCI Error interrupts and clear error
899 * bits.
900 */
901 err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
902 SCHIZO_PCICTRL_TTO_ERR |
903 SCHIZO_PCICTRL_RTRY_ERR |
904 SCHIZO_PCICTRL_SERR |
905 SCHIZO_PCICTRL_EEN);
906
907 err_no_mask = SCHIZO_PCICTRL_DTO_ERR;
908
909 tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);
910 tmp |= err_mask;
911 tmp &= ~err_no_mask;
912 upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);
913
914 err_mask = (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
915 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
916 SCHIZO_PCIAFSR_PTTO |
917 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
918 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
919 SCHIZO_PCIAFSR_STTO);
920
921 upa_writeq(err_mask, pbm->pbm_regs + SCHIZO_PCI_AFSR);
922
923 err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SNOOP_GR |
924 BUS_ERROR_SNOOP_PCI | BUS_ERROR_SNOOP_RD |
925 BUS_ERROR_SNOOP_RDS | BUS_ERROR_SNOOP_RDSA |
926 BUS_ERROR_SNOOP_OWN | BUS_ERROR_SNOOP_RDO |
927 BUS_ERROR_WDATA_PERR | BUS_ERROR_CTRL_PERR |
928 BUS_ERROR_SNOOP_ERR | BUS_ERROR_JBUS_ILL_B |
929 BUS_ERROR_JBUS_ILL_C | BUS_ERROR_RD_PERR |
930 BUS_ERROR_APERR | BUS_ERROR_UNMAP |
931 BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT);
932
933 upa_writeq((SCHIZO_SAFERRCTRL_EN | err_mask),
934 pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL);
935
936 upa_writeq((SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP)),
937 pbm->controller_regs + SCHIZO_SAFARI_IRQCTRL);
938 }
939
940 static void schizo_register_error_handlers(struct pci_pbm_info *pbm)
941 {
942 struct platform_device *op = of_find_device_by_node(pbm->op->dev.of_node);
943 u64 tmp, err_mask, err_no_mask;
944 int err;
945
946 /* Schizo IRQ property layout is:
947 * 0: PCIERR
948 * 1: UE ERR
949 * 2: CE ERR
950 * 3: SERR
951 * 4: POWER FAIL?
952 */
953
954 if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) {
955 err = request_irq(op->archdata.irqs[1], schizo_ue_intr, 0,
956 "SCHIZO_UE", pbm);
957 if (err)
958 printk(KERN_WARNING "%s: Could not register UE, "
959 "err=%d\n", pbm->name, err);
960 }
961 if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) {
962 err = request_irq(op->archdata.irqs[2], schizo_ce_intr, 0,
963 "SCHIZO_CE", pbm);
964 if (err)
965 printk(KERN_WARNING "%s: Could not register CE, "
966 "err=%d\n", pbm->name, err);
967 }
968 err = 0;
969 if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) {
970 err = request_irq(op->archdata.irqs[0], schizo_pcierr_intr, 0,
971 "SCHIZO_PCIERR", pbm);
972 } else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) {
973 err = request_irq(op->archdata.irqs[0], schizo_pcierr_intr, 0,
974 "SCHIZO_PCIERR", pbm);
975 }
976 if (err)
977 printk(KERN_WARNING "%s: Could not register PCIERR, "
978 "err=%d\n", pbm->name, err);
979
980 if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) {
981 err = request_irq(op->archdata.irqs[3], schizo_safarierr_intr, 0,
982 "SCHIZO_SERR", pbm);
983 if (err)
984 printk(KERN_WARNING "%s: Could not register SERR, "
985 "err=%d\n", pbm->name, err);
986 }
987
988 /* Enable UE and CE interrupts for controller. */
989 upa_writeq((SCHIZO_ECCCTRL_EE |
990 SCHIZO_ECCCTRL_UE |
991 SCHIZO_ECCCTRL_CE), pbm->controller_regs + SCHIZO_ECC_CTRL);
992
993 err_mask = (SCHIZO_PCICTRL_BUS_UNUS |
994 SCHIZO_PCICTRL_ESLCK |
995 SCHIZO_PCICTRL_TTO_ERR |
996 SCHIZO_PCICTRL_RTRY_ERR |
997 SCHIZO_PCICTRL_SBH_ERR |
998 SCHIZO_PCICTRL_SERR |
999 SCHIZO_PCICTRL_EEN);
1000
1001 err_no_mask = (SCHIZO_PCICTRL_DTO_ERR |
1002 SCHIZO_PCICTRL_SBH_INT);
1003
1004 /* Enable PCI Error interrupts and clear error
1005 * bits for each PBM.
1006 */
1007 tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);
1008 tmp |= err_mask;
1009 tmp &= ~err_no_mask;
1010 upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);
1011
1012 upa_writeq((SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA |
1013 SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR |
1014 SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS |
1015 SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA |
1016 SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR |
1017 SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS),
1018 pbm->pbm_regs + SCHIZO_PCI_AFSR);
1019
1020 /* Make all Safari error conditions fatal except unmapped
1021 * errors which we make generate interrupts.
1022 */
1023 err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SSMDIS |
1024 BUS_ERROR_BADMA | BUS_ERROR_BADMB |
1025 BUS_ERROR_BADMC |
1026 BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
1027 BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB |
1028 BUS_ERROR_CIQTO |
1029 BUS_ERROR_LPQTO | BUS_ERROR_SFPQTO |
1030 BUS_ERROR_UFPQTO | BUS_ERROR_APERR |
1031 BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT |
1032 BUS_ERROR_ILL);
1033 #if 1
1034 /* XXX Something wrong with some Excalibur systems
1035 * XXX Sun is shipping. The behavior on a 2-cpu
1036 * XXX machine is that both CPU1 parity error bits
1037 * XXX are set and are immediately set again when
1038 * XXX their error status bits are cleared. Just
1039 * XXX ignore them for now. -DaveM
1040 */
1041 err_mask &= ~(BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB |
1042 BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB);
1043 #endif
1044
1045 upa_writeq((SCHIZO_SAFERRCTRL_EN | err_mask),
1046 pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL);
1047 }
1048
1049 static void pbm_config_busmastering(struct pci_pbm_info *pbm)
1050 {
1051 u8 *addr;
1052
1053 /* Set cache-line size to 64 bytes, this is actually
1054 * a nop but I do it for completeness.
1055 */
1056 addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
1057 0, PCI_CACHE_LINE_SIZE);
1058 pci_config_write8(addr, 64 / sizeof(u32));
1059
1060 /* Set PBM latency timer to 64 PCI clocks. */
1061 addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno,
1062 0, PCI_LATENCY_TIMER);
1063 pci_config_write8(addr, 64);
1064 }
1065
1066 static void __devinit schizo_scan_bus(struct pci_pbm_info *pbm,
1067 struct device *parent)
1068 {
1069 pbm_config_busmastering(pbm);
1070 pbm->is_66mhz_capable =
1071 (of_find_property(pbm->op->dev.of_node, "66mhz-capable", NULL)
1072 != NULL);
1073
1074 pbm->pci_bus = pci_scan_one_pbm(pbm, parent);
1075
1076 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
1077 tomatillo_register_error_handlers(pbm);
1078 else
1079 schizo_register_error_handlers(pbm);
1080 }
1081
1082 #define SCHIZO_STRBUF_CONTROL (0x02800UL)
1083 #define SCHIZO_STRBUF_FLUSH (0x02808UL)
1084 #define SCHIZO_STRBUF_FSYNC (0x02810UL)
1085 #define SCHIZO_STRBUF_CTXFLUSH (0x02818UL)
1086 #define SCHIZO_STRBUF_CTXMATCH (0x10000UL)
1087
1088 static void schizo_pbm_strbuf_init(struct pci_pbm_info *pbm)
1089 {
1090 unsigned long base = pbm->pbm_regs;
1091 u64 control;
1092
1093 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
1094 /* TOMATILLO lacks streaming cache. */
1095 return;
1096 }
1097
1098 /* SCHIZO has context flushing. */
1099 pbm->stc.strbuf_control = base + SCHIZO_STRBUF_CONTROL;
1100 pbm->stc.strbuf_pflush = base + SCHIZO_STRBUF_FLUSH;
1101 pbm->stc.strbuf_fsync = base + SCHIZO_STRBUF_FSYNC;
1102 pbm->stc.strbuf_ctxflush = base + SCHIZO_STRBUF_CTXFLUSH;
1103 pbm->stc.strbuf_ctxmatch_base = base + SCHIZO_STRBUF_CTXMATCH;
1104
1105 pbm->stc.strbuf_flushflag = (volatile unsigned long *)
1106 ((((unsigned long)&pbm->stc.__flushflag_buf[0])
1107 + 63UL)
1108 & ~63UL);
1109 pbm->stc.strbuf_flushflag_pa = (unsigned long)
1110 __pa(pbm->stc.strbuf_flushflag);
1111
1112 /* Turn off LRU locking and diag mode, enable the
1113 * streaming buffer and leave the rerun-disable
1114 * setting however OBP set it.
1115 */
1116 control = upa_readq(pbm->stc.strbuf_control);
1117 control &= ~(SCHIZO_STRBUF_CTRL_LPTR |
1118 SCHIZO_STRBUF_CTRL_LENAB |
1119 SCHIZO_STRBUF_CTRL_DENAB);
1120 control |= SCHIZO_STRBUF_CTRL_ENAB;
1121 upa_writeq(control, pbm->stc.strbuf_control);
1122
1123 pbm->stc.strbuf_enabled = 1;
1124 }
1125
1126 #define SCHIZO_IOMMU_CONTROL (0x00200UL)
1127 #define SCHIZO_IOMMU_TSBBASE (0x00208UL)
1128 #define SCHIZO_IOMMU_FLUSH (0x00210UL)
1129 #define SCHIZO_IOMMU_CTXFLUSH (0x00218UL)
1130
1131 static int schizo_pbm_iommu_init(struct pci_pbm_info *pbm)
1132 {
1133 static const u32 vdma_default[] = { 0xc0000000, 0x40000000 };
1134 unsigned long i, tagbase, database;
1135 struct iommu *iommu = pbm->iommu;
1136 int tsbsize, err;
1137 const u32 *vdma;
1138 u32 dma_mask;
1139 u64 control;
1140
1141 vdma = of_get_property(pbm->op->dev.of_node, "virtual-dma", NULL);
1142 if (!vdma)
1143 vdma = vdma_default;
1144
1145 dma_mask = vdma[0];
1146 switch (vdma[1]) {
1147 case 0x20000000:
1148 dma_mask |= 0x1fffffff;
1149 tsbsize = 64;
1150 break;
1151
1152 case 0x40000000:
1153 dma_mask |= 0x3fffffff;
1154 tsbsize = 128;
1155 break;
1156
1157 case 0x80000000:
1158 dma_mask |= 0x7fffffff;
1159 tsbsize = 128;
1160 break;
1161
1162 default:
1163 printk(KERN_ERR PFX "Strange virtual-dma size.\n");
1164 return -EINVAL;
1165 }
1166
1167 /* Register addresses, SCHIZO has iommu ctx flushing. */
1168 iommu->iommu_control = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL;
1169 iommu->iommu_tsbbase = pbm->pbm_regs + SCHIZO_IOMMU_TSBBASE;
1170 iommu->iommu_flush = pbm->pbm_regs + SCHIZO_IOMMU_FLUSH;
1171 iommu->iommu_tags = iommu->iommu_flush + (0xa580UL - 0x0210UL);
1172 iommu->iommu_ctxflush = pbm->pbm_regs + SCHIZO_IOMMU_CTXFLUSH;
1173
1174 /* We use the main control/status register of SCHIZO as the write
1175 * completion register.
1176 */
1177 iommu->write_complete_reg = pbm->controller_regs + 0x10000UL;
1178
1179 /*
1180 * Invalidate TLB Entries.
1181 */
1182 control = upa_readq(iommu->iommu_control);
1183 control |= SCHIZO_IOMMU_CTRL_DENAB;
1184 upa_writeq(control, iommu->iommu_control);
1185
1186 tagbase = SCHIZO_IOMMU_TAG, database = SCHIZO_IOMMU_DATA;
1187
1188 for (i = 0; i < 16; i++) {
1189 upa_writeq(0, pbm->pbm_regs + tagbase + (i * 8UL));
1190 upa_writeq(0, pbm->pbm_regs + database + (i * 8UL));
1191 }
1192
1193 /* Leave diag mode enabled for full-flushing done
1194 * in pci_iommu.c
1195 */
1196 err = iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask,
1197 pbm->numa_node);
1198 if (err) {
1199 printk(KERN_ERR PFX "iommu_table_init() fails with %d\n", err);
1200 return err;
1201 }
1202
1203 upa_writeq(__pa(iommu->page_table), iommu->iommu_tsbbase);
1204
1205 control = upa_readq(iommu->iommu_control);
1206 control &= ~(SCHIZO_IOMMU_CTRL_TSBSZ | SCHIZO_IOMMU_CTRL_TBWSZ);
1207 switch (tsbsize) {
1208 case 64:
1209 control |= SCHIZO_IOMMU_TSBSZ_64K;
1210 break;
1211 case 128:
1212 control |= SCHIZO_IOMMU_TSBSZ_128K;
1213 break;
1214 }
1215
1216 control |= SCHIZO_IOMMU_CTRL_ENAB;
1217 upa_writeq(control, iommu->iommu_control);
1218
1219 return 0;
1220 }
1221
1222 #define SCHIZO_PCI_IRQ_RETRY (0x1a00UL)
1223 #define SCHIZO_IRQ_RETRY_INF 0xffUL
1224
1225 #define SCHIZO_PCI_DIAG (0x2020UL)
1226 #define SCHIZO_PCIDIAG_D_BADECC (1UL << 10UL) /* Disable BAD ECC errors (Schizo) */
1227 #define SCHIZO_PCIDIAG_D_BYPASS (1UL << 9UL) /* Disable MMU bypass mode (Schizo/Tomatillo) */
1228 #define SCHIZO_PCIDIAG_D_TTO (1UL << 8UL) /* Disable TTO errors (Schizo/Tomatillo) */
1229 #define SCHIZO_PCIDIAG_D_RTRYARB (1UL << 7UL) /* Disable retry arbitration (Schizo) */
1230 #define SCHIZO_PCIDIAG_D_RETRY (1UL << 6UL) /* Disable retry limit (Schizo/Tomatillo) */
1231 #define SCHIZO_PCIDIAG_D_INTSYNC (1UL << 5UL) /* Disable interrupt/DMA synch (Schizo/Tomatillo) */
1232 #define SCHIZO_PCIDIAG_I_DMA_PARITY (1UL << 3UL) /* Invert DMA parity (Schizo/Tomatillo) */
1233 #define SCHIZO_PCIDIAG_I_PIOD_PARITY (1UL << 2UL) /* Invert PIO data parity (Schizo/Tomatillo) */
1234 #define SCHIZO_PCIDIAG_I_PIOA_PARITY (1UL << 1UL) /* Invert PIO address parity (Schizo/Tomatillo) */
1235
1236 #define TOMATILLO_PCI_IOC_CSR (0x2248UL)
1237 #define TOMATILLO_IOC_PART_WPENAB 0x0000000000080000UL
1238 #define TOMATILLO_IOC_RDMULT_PENAB 0x0000000000040000UL
1239 #define TOMATILLO_IOC_RDONE_PENAB 0x0000000000020000UL
1240 #define TOMATILLO_IOC_RDLINE_PENAB 0x0000000000010000UL
1241 #define TOMATILLO_IOC_RDMULT_PLEN 0x000000000000c000UL
1242 #define TOMATILLO_IOC_RDMULT_PLEN_SHIFT 14UL
1243 #define TOMATILLO_IOC_RDONE_PLEN 0x0000000000003000UL
1244 #define TOMATILLO_IOC_RDONE_PLEN_SHIFT 12UL
1245 #define TOMATILLO_IOC_RDLINE_PLEN 0x0000000000000c00UL
1246 #define TOMATILLO_IOC_RDLINE_PLEN_SHIFT 10UL
1247 #define TOMATILLO_IOC_PREF_OFF 0x00000000000003f8UL
1248 #define TOMATILLO_IOC_PREF_OFF_SHIFT 3UL
1249 #define TOMATILLO_IOC_RDMULT_CPENAB 0x0000000000000004UL
1250 #define TOMATILLO_IOC_RDONE_CPENAB 0x0000000000000002UL
1251 #define TOMATILLO_IOC_RDLINE_CPENAB 0x0000000000000001UL
1252
1253 #define TOMATILLO_PCI_IOC_TDIAG (0x2250UL)
1254 #define TOMATILLO_PCI_IOC_DDIAG (0x2290UL)
1255
1256 static void schizo_pbm_hw_init(struct pci_pbm_info *pbm)
1257 {
1258 u64 tmp;
1259
1260 upa_writeq(5, pbm->pbm_regs + SCHIZO_PCI_IRQ_RETRY);
1261
1262 tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_CTRL);
1263
1264 /* Enable arbiter for all PCI slots. */
1265 tmp |= 0xff;
1266
1267 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
1268 pbm->chip_version >= 0x2)
1269 tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT;
1270
1271 if (!of_find_property(pbm->op->dev.of_node, "no-bus-parking", NULL))
1272 tmp |= SCHIZO_PCICTRL_PARK;
1273 else
1274 tmp &= ~SCHIZO_PCICTRL_PARK;
1275
1276 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO &&
1277 pbm->chip_version <= 0x1)
1278 tmp |= SCHIZO_PCICTRL_DTO_INT;
1279 else
1280 tmp &= ~SCHIZO_PCICTRL_DTO_INT;
1281
1282 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
1283 tmp |= (SCHIZO_PCICTRL_MRM_PREF |
1284 SCHIZO_PCICTRL_RDO_PREF |
1285 SCHIZO_PCICTRL_RDL_PREF);
1286
1287 upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_CTRL);
1288
1289 tmp = upa_readq(pbm->pbm_regs + SCHIZO_PCI_DIAG);
1290 tmp &= ~(SCHIZO_PCIDIAG_D_RTRYARB |
1291 SCHIZO_PCIDIAG_D_RETRY |
1292 SCHIZO_PCIDIAG_D_INTSYNC);
1293 upa_writeq(tmp, pbm->pbm_regs + SCHIZO_PCI_DIAG);
1294
1295 if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) {
1296 /* Clear prefetch lengths to workaround a bug in
1297 * Jalapeno...
1298 */
1299 tmp = (TOMATILLO_IOC_PART_WPENAB |
1300 (1 << TOMATILLO_IOC_PREF_OFF_SHIFT) |
1301 TOMATILLO_IOC_RDMULT_CPENAB |
1302 TOMATILLO_IOC_RDONE_CPENAB |
1303 TOMATILLO_IOC_RDLINE_CPENAB);
1304
1305 upa_writeq(tmp, pbm->pbm_regs + TOMATILLO_PCI_IOC_CSR);
1306 }
1307 }
1308
1309 static int __devinit schizo_pbm_init(struct pci_pbm_info *pbm,
1310 struct platform_device *op, u32 portid,
1311 int chip_type)
1312 {
1313 const struct linux_prom64_registers *regs;
1314 struct device_node *dp = op->dev.of_node;
1315 const char *chipset_name;
1316 int err;
1317
1318 switch (chip_type) {
1319 case PBM_CHIP_TYPE_TOMATILLO:
1320 chipset_name = "TOMATILLO";
1321 break;
1322
1323 case PBM_CHIP_TYPE_SCHIZO_PLUS:
1324 chipset_name = "SCHIZO+";
1325 break;
1326
1327 case PBM_CHIP_TYPE_SCHIZO:
1328 default:
1329 chipset_name = "SCHIZO";
1330 break;
1331 }
1332
1333 /* For SCHIZO, three OBP regs:
1334 * 1) PBM controller regs
1335 * 2) Schizo front-end controller regs (same for both PBMs)
1336 * 3) PBM PCI config space
1337 *
1338 * For TOMATILLO, four OBP regs:
1339 * 1) PBM controller regs
1340 * 2) Tomatillo front-end controller regs
1341 * 3) PBM PCI config space
1342 * 4) Ichip regs
1343 */
1344 regs = of_get_property(dp, "reg", NULL);
1345
1346 pbm->next = pci_pbm_root;
1347 pci_pbm_root = pbm;
1348
1349 pbm->numa_node = -1;
1350
1351 pbm->pci_ops = &sun4u_pci_ops;
1352 pbm->config_space_reg_bits = 8;
1353
1354 pbm->index = pci_num_pbms++;
1355
1356 pbm->portid = portid;
1357 pbm->op = op;
1358
1359 pbm->chip_type = chip_type;
1360 pbm->chip_version = of_getintprop_default(dp, "version#", 0);
1361 pbm->chip_revision = of_getintprop_default(dp, "module-version#", 0);
1362
1363 pbm->pbm_regs = regs[0].phys_addr;
1364 pbm->controller_regs = regs[1].phys_addr - 0x10000UL;
1365
1366 if (chip_type == PBM_CHIP_TYPE_TOMATILLO)
1367 pbm->sync_reg = regs[3].phys_addr + 0x1a18UL;
1368
1369 pbm->name = dp->full_name;
1370
1371 printk("%s: %s PCI Bus Module ver[%x:%x]\n",
1372 pbm->name, chipset_name,
1373 pbm->chip_version, pbm->chip_revision);
1374
1375 schizo_pbm_hw_init(pbm);
1376
1377 pci_determine_mem_io_space(pbm);
1378
1379 pci_get_pbm_props(pbm);
1380
1381 err = schizo_pbm_iommu_init(pbm);
1382 if (err)
1383 return err;
1384
1385 schizo_pbm_strbuf_init(pbm);
1386
1387 schizo_scan_bus(pbm, &op->dev);
1388
1389 return 0;
1390 }
1391
1392 static inline int portid_compare(u32 x, u32 y, int chip_type)
1393 {
1394 if (chip_type == PBM_CHIP_TYPE_TOMATILLO) {
1395 if (x == (y ^ 1))
1396 return 1;
1397 return 0;
1398 }
1399 return (x == y);
1400 }
1401
1402 static struct pci_pbm_info * __devinit schizo_find_sibling(u32 portid,
1403 int chip_type)
1404 {
1405 struct pci_pbm_info *pbm;
1406
1407 for (pbm = pci_pbm_root; pbm; pbm = pbm->next) {
1408 if (portid_compare(pbm->portid, portid, chip_type))
1409 return pbm;
1410 }
1411 return NULL;
1412 }
1413
1414 static int __devinit __schizo_init(struct platform_device *op, unsigned long chip_type)
1415 {
1416 struct device_node *dp = op->dev.of_node;
1417 struct pci_pbm_info *pbm;
1418 struct iommu *iommu;
1419 u32 portid;
1420 int err;
1421
1422 portid = of_getintprop_default(dp, "portid", 0xff);
1423
1424 err = -ENOMEM;
1425 pbm = kzalloc(sizeof(*pbm), GFP_KERNEL);
1426 if (!pbm) {
1427 printk(KERN_ERR PFX "Cannot allocate pci_pbm_info.\n");
1428 goto out_err;
1429 }
1430
1431 pbm->sibling = schizo_find_sibling(portid, chip_type);
1432
1433 iommu = kzalloc(sizeof(struct iommu), GFP_KERNEL);
1434 if (!iommu) {
1435 printk(KERN_ERR PFX "Cannot allocate PBM A iommu.\n");
1436 goto out_free_pbm;
1437 }
1438
1439 pbm->iommu = iommu;
1440
1441 if (schizo_pbm_init(pbm, op, portid, chip_type))
1442 goto out_free_iommu;
1443
1444 if (pbm->sibling)
1445 pbm->sibling->sibling = pbm;
1446
1447 dev_set_drvdata(&op->dev, pbm);
1448
1449 return 0;
1450
1451 out_free_iommu:
1452 kfree(pbm->iommu);
1453
1454 out_free_pbm:
1455 kfree(pbm);
1456
1457 out_err:
1458 return err;
1459 }
1460
1461 static const struct of_device_id schizo_match[];
1462 static int __devinit schizo_probe(struct platform_device *op)
1463 {
1464 const struct of_device_id *match;
1465
1466 match = of_match_device(schizo_match, &op->dev);
1467 if (!match)
1468 return -EINVAL;
1469 return __schizo_init(op, (unsigned long)match->data);
1470 }
1471
1472 /* The ordering of this table is very important. Some Tomatillo
1473 * nodes announce that they are compatible with both pci108e,a801
1474 * and pci108e,8001. So list the chips in reverse chronological
1475 * order.
1476 */
1477 static const struct of_device_id schizo_match[] = {
1478 {
1479 .name = "pci",
1480 .compatible = "pci108e,a801",
1481 .data = (void *) PBM_CHIP_TYPE_TOMATILLO,
1482 },
1483 {
1484 .name = "pci",
1485 .compatible = "pci108e,8002",
1486 .data = (void *) PBM_CHIP_TYPE_SCHIZO_PLUS,
1487 },
1488 {
1489 .name = "pci",
1490 .compatible = "pci108e,8001",
1491 .data = (void *) PBM_CHIP_TYPE_SCHIZO,
1492 },
1493 {},
1494 };
1495
1496 static struct platform_driver schizo_driver = {
1497 .driver = {
1498 .name = DRIVER_NAME,
1499 .owner = THIS_MODULE,
1500 .of_match_table = schizo_match,
1501 },
1502 .probe = schizo_probe,
1503 };
1504
1505 static int __init schizo_init(void)
1506 {
1507 return platform_driver_register(&schizo_driver);
1508 }
1509
1510 subsys_initcall(schizo_init);
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