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9fd8b647 | 1 | /* pci_schizo.c: SCHIZO/TOMATILLO specific PCI controller support. |
1da177e4 | 2 | * |
9fd8b647 | 3 | * Copyright (C) 2001, 2002, 2003, 2007 David S. Miller (davem@davemloft.net) |
1da177e4 LT |
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 | ||
1da177e4 LT |
13 | #include <asm/iommu.h> |
14 | #include <asm/irq.h> | |
15 | #include <asm/upa.h> | |
bb6743f4 | 16 | #include <asm/pstate.h> |
e87dc350 | 17 | #include <asm/prom.h> |
c57c2ffb DM |
18 | #include <asm/of_device.h> |
19 | #include <asm/oplib.h> | |
1da177e4 LT |
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 | /* Just make sure the bus number is in range. */ | |
108 | static int schizo_out_of_range(struct pci_pbm_info *pbm, | |
109 | unsigned char bus, | |
110 | unsigned char devfn) | |
111 | { | |
112 | if (bus < pbm->pci_first_busno || | |
113 | bus > pbm->pci_last_busno) | |
114 | return 1; | |
115 | return 0; | |
116 | } | |
117 | ||
118 | /* SCHIZO PCI configuration space accessors. */ | |
119 | ||
120 | static int schizo_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn, | |
121 | int where, int size, u32 *value) | |
122 | { | |
123 | struct pci_pbm_info *pbm = bus_dev->sysdata; | |
124 | unsigned char bus = bus_dev->number; | |
125 | u32 *addr; | |
126 | u16 tmp16; | |
127 | u8 tmp8; | |
128 | ||
97b3cf05 DM |
129 | if (bus_dev == pbm->pci_bus && devfn == 0x00) |
130 | return pci_host_bridge_read_pci_cfg(bus_dev, devfn, where, | |
131 | size, value); | |
1da177e4 LT |
132 | switch (size) { |
133 | case 1: | |
134 | *value = 0xff; | |
135 | break; | |
136 | case 2: | |
137 | *value = 0xffff; | |
138 | break; | |
139 | case 4: | |
140 | *value = 0xffffffff; | |
141 | break; | |
142 | } | |
143 | ||
144 | addr = schizo_pci_config_mkaddr(pbm, bus, devfn, where); | |
145 | if (!addr) | |
146 | return PCIBIOS_SUCCESSFUL; | |
147 | ||
148 | if (schizo_out_of_range(pbm, bus, devfn)) | |
149 | return PCIBIOS_SUCCESSFUL; | |
150 | switch (size) { | |
151 | case 1: | |
152 | pci_config_read8((u8 *)addr, &tmp8); | |
153 | *value = tmp8; | |
154 | break; | |
155 | ||
156 | case 2: | |
157 | if (where & 0x01) { | |
158 | printk("pci_read_config_word: misaligned reg [%x]\n", | |
159 | where); | |
160 | return PCIBIOS_SUCCESSFUL; | |
161 | } | |
162 | pci_config_read16((u16 *)addr, &tmp16); | |
163 | *value = tmp16; | |
164 | break; | |
165 | ||
166 | case 4: | |
167 | if (where & 0x03) { | |
168 | printk("pci_read_config_dword: misaligned reg [%x]\n", | |
169 | where); | |
170 | return PCIBIOS_SUCCESSFUL; | |
171 | } | |
172 | pci_config_read32(addr, value); | |
173 | break; | |
174 | } | |
175 | return PCIBIOS_SUCCESSFUL; | |
176 | } | |
177 | ||
178 | static int schizo_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn, | |
179 | int where, int size, u32 value) | |
180 | { | |
181 | struct pci_pbm_info *pbm = bus_dev->sysdata; | |
182 | unsigned char bus = bus_dev->number; | |
183 | u32 *addr; | |
184 | ||
97b3cf05 DM |
185 | if (bus_dev == pbm->pci_bus && devfn == 0x00) |
186 | return pci_host_bridge_write_pci_cfg(bus_dev, devfn, where, | |
187 | size, value); | |
1da177e4 LT |
188 | addr = schizo_pci_config_mkaddr(pbm, bus, devfn, where); |
189 | if (!addr) | |
190 | return PCIBIOS_SUCCESSFUL; | |
191 | ||
192 | if (schizo_out_of_range(pbm, bus, devfn)) | |
193 | return PCIBIOS_SUCCESSFUL; | |
194 | ||
195 | switch (size) { | |
196 | case 1: | |
197 | pci_config_write8((u8 *)addr, value); | |
198 | break; | |
199 | ||
200 | case 2: | |
201 | if (where & 0x01) { | |
202 | printk("pci_write_config_word: misaligned reg [%x]\n", | |
203 | where); | |
204 | return PCIBIOS_SUCCESSFUL; | |
205 | } | |
206 | pci_config_write16((u16 *)addr, value); | |
207 | break; | |
208 | ||
209 | case 4: | |
210 | if (where & 0x03) { | |
211 | printk("pci_write_config_dword: misaligned reg [%x]\n", | |
212 | where); | |
213 | return PCIBIOS_SUCCESSFUL; | |
214 | } | |
215 | ||
216 | pci_config_write32(addr, value); | |
217 | } | |
218 | return PCIBIOS_SUCCESSFUL; | |
219 | } | |
220 | ||
221 | static struct pci_ops schizo_ops = { | |
222 | .read = schizo_read_pci_cfg, | |
223 | .write = schizo_write_pci_cfg, | |
224 | }; | |
225 | ||
1da177e4 LT |
226 | /* SCHIZO error handling support. */ |
227 | enum schizo_error_type { | |
228 | UE_ERR, CE_ERR, PCI_ERR, SAFARI_ERR | |
229 | }; | |
230 | ||
231 | static DEFINE_SPINLOCK(stc_buf_lock); | |
232 | static unsigned long stc_error_buf[128]; | |
233 | static unsigned long stc_tag_buf[16]; | |
234 | static unsigned long stc_line_buf[16]; | |
235 | ||
236 | #define SCHIZO_UE_INO 0x30 /* Uncorrectable ECC error */ | |
237 | #define SCHIZO_CE_INO 0x31 /* Correctable ECC error */ | |
238 | #define SCHIZO_PCIERR_A_INO 0x32 /* PBM A PCI bus error */ | |
239 | #define SCHIZO_PCIERR_B_INO 0x33 /* PBM B PCI bus error */ | |
240 | #define SCHIZO_SERR_INO 0x34 /* Safari interface error */ | |
241 | ||
1da177e4 LT |
242 | #define SCHIZO_STC_ERR 0xb800UL /* --> 0xba00 */ |
243 | #define SCHIZO_STC_TAG 0xba00UL /* --> 0xba80 */ | |
244 | #define SCHIZO_STC_LINE 0xbb00UL /* --> 0xbb80 */ | |
245 | ||
246 | #define SCHIZO_STCERR_WRITE 0x2UL | |
247 | #define SCHIZO_STCERR_READ 0x1UL | |
248 | ||
249 | #define SCHIZO_STCTAG_PPN 0x3fffffff00000000UL | |
250 | #define SCHIZO_STCTAG_VPN 0x00000000ffffe000UL | |
251 | #define SCHIZO_STCTAG_VALID 0x8000000000000000UL | |
252 | #define SCHIZO_STCTAG_READ 0x4000000000000000UL | |
253 | ||
254 | #define SCHIZO_STCLINE_LINDX 0x0000000007800000UL | |
255 | #define SCHIZO_STCLINE_SPTR 0x000000000007e000UL | |
256 | #define SCHIZO_STCLINE_LADDR 0x0000000000001fc0UL | |
257 | #define SCHIZO_STCLINE_EPTR 0x000000000000003fUL | |
258 | #define SCHIZO_STCLINE_VALID 0x0000000000600000UL | |
259 | #define SCHIZO_STCLINE_FOFN 0x0000000000180000UL | |
260 | ||
261 | static void __schizo_check_stc_error_pbm(struct pci_pbm_info *pbm, | |
262 | enum schizo_error_type type) | |
263 | { | |
16ce82d8 | 264 | struct strbuf *strbuf = &pbm->stc; |
1da177e4 LT |
265 | unsigned long regbase = pbm->pbm_regs; |
266 | unsigned long err_base, tag_base, line_base; | |
267 | u64 control; | |
268 | int i; | |
269 | ||
270 | err_base = regbase + SCHIZO_STC_ERR; | |
271 | tag_base = regbase + SCHIZO_STC_TAG; | |
272 | line_base = regbase + SCHIZO_STC_LINE; | |
273 | ||
274 | spin_lock(&stc_buf_lock); | |
275 | ||
276 | /* This is __REALLY__ dangerous. When we put the | |
277 | * streaming buffer into diagnostic mode to probe | |
278 | * it's tags and error status, we _must_ clear all | |
279 | * of the line tag valid bits before re-enabling | |
280 | * the streaming buffer. If any dirty data lives | |
281 | * in the STC when we do this, we will end up | |
282 | * invalidating it before it has a chance to reach | |
283 | * main memory. | |
284 | */ | |
285 | control = schizo_read(strbuf->strbuf_control); | |
286 | schizo_write(strbuf->strbuf_control, | |
287 | (control | SCHIZO_STRBUF_CTRL_DENAB)); | |
288 | for (i = 0; i < 128; i++) { | |
289 | unsigned long val; | |
290 | ||
291 | val = schizo_read(err_base + (i * 8UL)); | |
292 | schizo_write(err_base + (i * 8UL), 0UL); | |
293 | stc_error_buf[i] = val; | |
294 | } | |
295 | for (i = 0; i < 16; i++) { | |
296 | stc_tag_buf[i] = schizo_read(tag_base + (i * 8UL)); | |
297 | stc_line_buf[i] = schizo_read(line_base + (i * 8UL)); | |
298 | schizo_write(tag_base + (i * 8UL), 0UL); | |
299 | schizo_write(line_base + (i * 8UL), 0UL); | |
300 | } | |
301 | ||
302 | /* OK, state is logged, exit diagnostic mode. */ | |
303 | schizo_write(strbuf->strbuf_control, control); | |
304 | ||
305 | for (i = 0; i < 16; i++) { | |
306 | int j, saw_error, first, last; | |
307 | ||
308 | saw_error = 0; | |
309 | first = i * 8; | |
310 | last = first + 8; | |
311 | for (j = first; j < last; j++) { | |
312 | unsigned long errval = stc_error_buf[j]; | |
313 | if (errval != 0) { | |
314 | saw_error++; | |
315 | printk("%s: STC_ERR(%d)[wr(%d)rd(%d)]\n", | |
316 | pbm->name, | |
317 | j, | |
318 | (errval & SCHIZO_STCERR_WRITE) ? 1 : 0, | |
319 | (errval & SCHIZO_STCERR_READ) ? 1 : 0); | |
320 | } | |
321 | } | |
322 | if (saw_error != 0) { | |
323 | unsigned long tagval = stc_tag_buf[i]; | |
324 | unsigned long lineval = stc_line_buf[i]; | |
325 | printk("%s: STC_TAG(%d)[PA(%016lx)VA(%08lx)V(%d)R(%d)]\n", | |
326 | pbm->name, | |
327 | i, | |
328 | ((tagval & SCHIZO_STCTAG_PPN) >> 19UL), | |
329 | (tagval & SCHIZO_STCTAG_VPN), | |
330 | ((tagval & SCHIZO_STCTAG_VALID) ? 1 : 0), | |
331 | ((tagval & SCHIZO_STCTAG_READ) ? 1 : 0)); | |
332 | ||
333 | /* XXX Should spit out per-bank error information... -DaveM */ | |
334 | printk("%s: STC_LINE(%d)[LIDX(%lx)SP(%lx)LADDR(%lx)EP(%lx)" | |
335 | "V(%d)FOFN(%d)]\n", | |
336 | pbm->name, | |
337 | i, | |
338 | ((lineval & SCHIZO_STCLINE_LINDX) >> 23UL), | |
339 | ((lineval & SCHIZO_STCLINE_SPTR) >> 13UL), | |
340 | ((lineval & SCHIZO_STCLINE_LADDR) >> 6UL), | |
341 | ((lineval & SCHIZO_STCLINE_EPTR) >> 0UL), | |
342 | ((lineval & SCHIZO_STCLINE_VALID) ? 1 : 0), | |
343 | ((lineval & SCHIZO_STCLINE_FOFN) ? 1 : 0)); | |
344 | } | |
345 | } | |
346 | ||
347 | spin_unlock(&stc_buf_lock); | |
348 | } | |
349 | ||
350 | /* IOMMU is per-PBM in Schizo, so interrogate both for anonymous | |
351 | * controller level errors. | |
352 | */ | |
353 | ||
354 | #define SCHIZO_IOMMU_TAG 0xa580UL | |
355 | #define SCHIZO_IOMMU_DATA 0xa600UL | |
356 | ||
357 | #define SCHIZO_IOMMU_TAG_CTXT 0x0000001ffe000000UL | |
358 | #define SCHIZO_IOMMU_TAG_ERRSTS 0x0000000001800000UL | |
359 | #define SCHIZO_IOMMU_TAG_ERR 0x0000000000400000UL | |
360 | #define SCHIZO_IOMMU_TAG_WRITE 0x0000000000200000UL | |
361 | #define SCHIZO_IOMMU_TAG_STREAM 0x0000000000100000UL | |
362 | #define SCHIZO_IOMMU_TAG_SIZE 0x0000000000080000UL | |
363 | #define SCHIZO_IOMMU_TAG_VPAGE 0x000000000007ffffUL | |
364 | ||
365 | #define SCHIZO_IOMMU_DATA_VALID 0x0000000100000000UL | |
366 | #define SCHIZO_IOMMU_DATA_CACHE 0x0000000040000000UL | |
367 | #define SCHIZO_IOMMU_DATA_PPAGE 0x000000003fffffffUL | |
368 | ||
369 | static void schizo_check_iommu_error_pbm(struct pci_pbm_info *pbm, | |
370 | enum schizo_error_type type) | |
371 | { | |
16ce82d8 | 372 | struct iommu *iommu = pbm->iommu; |
1da177e4 LT |
373 | unsigned long iommu_tag[16]; |
374 | unsigned long iommu_data[16]; | |
375 | unsigned long flags; | |
376 | u64 control; | |
377 | int i; | |
378 | ||
379 | spin_lock_irqsave(&iommu->lock, flags); | |
380 | control = schizo_read(iommu->iommu_control); | |
381 | if (control & SCHIZO_IOMMU_CTRL_XLTEERR) { | |
382 | unsigned long base; | |
383 | char *type_string; | |
384 | ||
385 | /* Clear the error encountered bit. */ | |
386 | control &= ~SCHIZO_IOMMU_CTRL_XLTEERR; | |
387 | schizo_write(iommu->iommu_control, control); | |
388 | ||
389 | switch((control & SCHIZO_IOMMU_CTRL_XLTESTAT) >> 25UL) { | |
390 | case 0: | |
391 | type_string = "Protection Error"; | |
392 | break; | |
393 | case 1: | |
394 | type_string = "Invalid Error"; | |
395 | break; | |
396 | case 2: | |
397 | type_string = "TimeOut Error"; | |
398 | break; | |
399 | case 3: | |
400 | default: | |
401 | type_string = "ECC Error"; | |
402 | break; | |
403 | }; | |
404 | printk("%s: IOMMU Error, type[%s]\n", | |
405 | pbm->name, type_string); | |
406 | ||
407 | /* Put the IOMMU into diagnostic mode and probe | |
408 | * it's TLB for entries with error status. | |
409 | * | |
410 | * It is very possible for another DVMA to occur | |
411 | * while we do this probe, and corrupt the system | |
412 | * further. But we are so screwed at this point | |
413 | * that we are likely to crash hard anyways, so | |
414 | * get as much diagnostic information to the | |
415 | * console as we can. | |
416 | */ | |
417 | schizo_write(iommu->iommu_control, | |
418 | control | SCHIZO_IOMMU_CTRL_DENAB); | |
419 | ||
420 | base = pbm->pbm_regs; | |
421 | ||
422 | for (i = 0; i < 16; i++) { | |
423 | iommu_tag[i] = | |
424 | schizo_read(base + SCHIZO_IOMMU_TAG + (i * 8UL)); | |
425 | iommu_data[i] = | |
426 | schizo_read(base + SCHIZO_IOMMU_DATA + (i * 8UL)); | |
427 | ||
428 | /* Now clear out the entry. */ | |
429 | schizo_write(base + SCHIZO_IOMMU_TAG + (i * 8UL), 0); | |
430 | schizo_write(base + SCHIZO_IOMMU_DATA + (i * 8UL), 0); | |
431 | } | |
432 | ||
433 | /* Leave diagnostic mode. */ | |
434 | schizo_write(iommu->iommu_control, control); | |
435 | ||
436 | for (i = 0; i < 16; i++) { | |
437 | unsigned long tag, data; | |
438 | ||
439 | tag = iommu_tag[i]; | |
440 | if (!(tag & SCHIZO_IOMMU_TAG_ERR)) | |
441 | continue; | |
442 | ||
443 | data = iommu_data[i]; | |
444 | switch((tag & SCHIZO_IOMMU_TAG_ERRSTS) >> 23UL) { | |
445 | case 0: | |
446 | type_string = "Protection Error"; | |
447 | break; | |
448 | case 1: | |
449 | type_string = "Invalid Error"; | |
450 | break; | |
451 | case 2: | |
452 | type_string = "TimeOut Error"; | |
453 | break; | |
454 | case 3: | |
455 | default: | |
456 | type_string = "ECC Error"; | |
457 | break; | |
458 | }; | |
459 | printk("%s: IOMMU TAG(%d)[error(%s) ctx(%x) wr(%d) str(%d) " | |
460 | "sz(%dK) vpg(%08lx)]\n", | |
461 | pbm->name, i, type_string, | |
462 | (int)((tag & SCHIZO_IOMMU_TAG_CTXT) >> 25UL), | |
463 | ((tag & SCHIZO_IOMMU_TAG_WRITE) ? 1 : 0), | |
464 | ((tag & SCHIZO_IOMMU_TAG_STREAM) ? 1 : 0), | |
465 | ((tag & SCHIZO_IOMMU_TAG_SIZE) ? 64 : 8), | |
466 | (tag & SCHIZO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT); | |
467 | printk("%s: IOMMU DATA(%d)[valid(%d) cache(%d) ppg(%016lx)]\n", | |
468 | pbm->name, i, | |
469 | ((data & SCHIZO_IOMMU_DATA_VALID) ? 1 : 0), | |
470 | ((data & SCHIZO_IOMMU_DATA_CACHE) ? 1 : 0), | |
471 | (data & SCHIZO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT); | |
472 | } | |
473 | } | |
474 | if (pbm->stc.strbuf_enabled) | |
475 | __schizo_check_stc_error_pbm(pbm, type); | |
476 | spin_unlock_irqrestore(&iommu->lock, flags); | |
477 | } | |
478 | ||
479 | static void schizo_check_iommu_error(struct pci_controller_info *p, | |
480 | enum schizo_error_type type) | |
481 | { | |
482 | schizo_check_iommu_error_pbm(&p->pbm_A, type); | |
483 | schizo_check_iommu_error_pbm(&p->pbm_B, type); | |
484 | } | |
485 | ||
486 | /* Uncorrectable ECC error status gathering. */ | |
487 | #define SCHIZO_UE_AFSR 0x10030UL | |
488 | #define SCHIZO_UE_AFAR 0x10038UL | |
489 | ||
490 | #define SCHIZO_UEAFSR_PPIO 0x8000000000000000UL /* Safari */ | |
491 | #define SCHIZO_UEAFSR_PDRD 0x4000000000000000UL /* Safari/Tomatillo */ | |
492 | #define SCHIZO_UEAFSR_PDWR 0x2000000000000000UL /* Safari */ | |
493 | #define SCHIZO_UEAFSR_SPIO 0x1000000000000000UL /* Safari */ | |
494 | #define SCHIZO_UEAFSR_SDMA 0x0800000000000000UL /* Safari/Tomatillo */ | |
495 | #define SCHIZO_UEAFSR_ERRPNDG 0x0300000000000000UL /* Safari */ | |
496 | #define SCHIZO_UEAFSR_BMSK 0x000003ff00000000UL /* Safari */ | |
497 | #define SCHIZO_UEAFSR_QOFF 0x00000000c0000000UL /* Safari/Tomatillo */ | |
498 | #define SCHIZO_UEAFSR_AID 0x000000001f000000UL /* Safari/Tomatillo */ | |
499 | #define SCHIZO_UEAFSR_PARTIAL 0x0000000000800000UL /* Safari */ | |
500 | #define SCHIZO_UEAFSR_OWNEDIN 0x0000000000400000UL /* Safari */ | |
501 | #define SCHIZO_UEAFSR_MTAGSYND 0x00000000000f0000UL /* Safari */ | |
502 | #define SCHIZO_UEAFSR_MTAG 0x000000000000e000UL /* Safari */ | |
503 | #define SCHIZO_UEAFSR_ECCSYND 0x00000000000001ffUL /* Safari */ | |
504 | ||
6d24c8dc | 505 | static irqreturn_t schizo_ue_intr(int irq, void *dev_id) |
1da177e4 | 506 | { |
34768bc8 DM |
507 | struct pci_pbm_info *pbm = dev_id; |
508 | struct pci_controller_info *p = pbm->parent; | |
509 | unsigned long afsr_reg = pbm->controller_regs + SCHIZO_UE_AFSR; | |
510 | unsigned long afar_reg = pbm->controller_regs + SCHIZO_UE_AFAR; | |
1da177e4 LT |
511 | unsigned long afsr, afar, error_bits; |
512 | int reported, limit; | |
513 | ||
514 | /* Latch uncorrectable error status. */ | |
515 | afar = schizo_read(afar_reg); | |
516 | ||
517 | /* If either of the error pending bits are set in the | |
518 | * AFSR, the error status is being actively updated by | |
519 | * the hardware and we must re-read to get a clean value. | |
520 | */ | |
521 | limit = 1000; | |
522 | do { | |
523 | afsr = schizo_read(afsr_reg); | |
524 | } while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit); | |
525 | ||
526 | /* Clear the primary/secondary error status bits. */ | |
527 | error_bits = afsr & | |
528 | (SCHIZO_UEAFSR_PPIO | SCHIZO_UEAFSR_PDRD | SCHIZO_UEAFSR_PDWR | | |
529 | SCHIZO_UEAFSR_SPIO | SCHIZO_UEAFSR_SDMA); | |
530 | if (!error_bits) | |
531 | return IRQ_NONE; | |
532 | schizo_write(afsr_reg, error_bits); | |
533 | ||
534 | /* Log the error. */ | |
6c108f12 DM |
535 | printk("%s: Uncorrectable Error, primary error type[%s]\n", |
536 | pbm->name, | |
1da177e4 LT |
537 | (((error_bits & SCHIZO_UEAFSR_PPIO) ? |
538 | "PIO" : | |
539 | ((error_bits & SCHIZO_UEAFSR_PDRD) ? | |
540 | "DMA Read" : | |
541 | ((error_bits & SCHIZO_UEAFSR_PDWR) ? | |
542 | "DMA Write" : "???"))))); | |
6c108f12 DM |
543 | printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n", |
544 | pbm->name, | |
1da177e4 LT |
545 | (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL, |
546 | (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL, | |
547 | (afsr & SCHIZO_UEAFSR_AID) >> 24UL); | |
6c108f12 DM |
548 | printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n", |
549 | pbm->name, | |
1da177e4 LT |
550 | (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0, |
551 | (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0, | |
552 | (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL, | |
553 | (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL, | |
554 | (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL); | |
6c108f12 DM |
555 | printk("%s: UE AFAR [%016lx]\n", pbm->name, afar); |
556 | printk("%s: UE Secondary errors [", pbm->name); | |
1da177e4 LT |
557 | reported = 0; |
558 | if (afsr & SCHIZO_UEAFSR_SPIO) { | |
559 | reported++; | |
560 | printk("(PIO)"); | |
561 | } | |
562 | if (afsr & SCHIZO_UEAFSR_SDMA) { | |
563 | reported++; | |
564 | printk("(DMA)"); | |
565 | } | |
566 | if (!reported) | |
567 | printk("(none)"); | |
568 | printk("]\n"); | |
569 | ||
570 | /* Interrogate IOMMU for error status. */ | |
571 | schizo_check_iommu_error(p, UE_ERR); | |
572 | ||
1da177e4 LT |
573 | return IRQ_HANDLED; |
574 | } | |
575 | ||
576 | #define SCHIZO_CE_AFSR 0x10040UL | |
577 | #define SCHIZO_CE_AFAR 0x10048UL | |
578 | ||
579 | #define SCHIZO_CEAFSR_PPIO 0x8000000000000000UL | |
580 | #define SCHIZO_CEAFSR_PDRD 0x4000000000000000UL | |
581 | #define SCHIZO_CEAFSR_PDWR 0x2000000000000000UL | |
582 | #define SCHIZO_CEAFSR_SPIO 0x1000000000000000UL | |
583 | #define SCHIZO_CEAFSR_SDMA 0x0800000000000000UL | |
584 | #define SCHIZO_CEAFSR_ERRPNDG 0x0300000000000000UL | |
585 | #define SCHIZO_CEAFSR_BMSK 0x000003ff00000000UL | |
586 | #define SCHIZO_CEAFSR_QOFF 0x00000000c0000000UL | |
587 | #define SCHIZO_CEAFSR_AID 0x000000001f000000UL | |
588 | #define SCHIZO_CEAFSR_PARTIAL 0x0000000000800000UL | |
589 | #define SCHIZO_CEAFSR_OWNEDIN 0x0000000000400000UL | |
590 | #define SCHIZO_CEAFSR_MTAGSYND 0x00000000000f0000UL | |
591 | #define SCHIZO_CEAFSR_MTAG 0x000000000000e000UL | |
592 | #define SCHIZO_CEAFSR_ECCSYND 0x00000000000001ffUL | |
593 | ||
6d24c8dc | 594 | static irqreturn_t schizo_ce_intr(int irq, void *dev_id) |
1da177e4 | 595 | { |
34768bc8 | 596 | struct pci_pbm_info *pbm = dev_id; |
34768bc8 DM |
597 | unsigned long afsr_reg = pbm->controller_regs + SCHIZO_CE_AFSR; |
598 | unsigned long afar_reg = pbm->controller_regs + SCHIZO_CE_AFAR; | |
1da177e4 LT |
599 | unsigned long afsr, afar, error_bits; |
600 | int reported, limit; | |
601 | ||
602 | /* Latch error status. */ | |
603 | afar = schizo_read(afar_reg); | |
604 | ||
605 | /* If either of the error pending bits are set in the | |
606 | * AFSR, the error status is being actively updated by | |
607 | * the hardware and we must re-read to get a clean value. | |
608 | */ | |
609 | limit = 1000; | |
610 | do { | |
611 | afsr = schizo_read(afsr_reg); | |
612 | } while ((afsr & SCHIZO_UEAFSR_ERRPNDG) != 0 && --limit); | |
613 | ||
614 | /* Clear primary/secondary error status bits. */ | |
615 | error_bits = afsr & | |
616 | (SCHIZO_CEAFSR_PPIO | SCHIZO_CEAFSR_PDRD | SCHIZO_CEAFSR_PDWR | | |
617 | SCHIZO_CEAFSR_SPIO | SCHIZO_CEAFSR_SDMA); | |
618 | if (!error_bits) | |
619 | return IRQ_NONE; | |
620 | schizo_write(afsr_reg, error_bits); | |
621 | ||
622 | /* Log the error. */ | |
6c108f12 DM |
623 | printk("%s: Correctable Error, primary error type[%s]\n", |
624 | pbm->name, | |
1da177e4 LT |
625 | (((error_bits & SCHIZO_CEAFSR_PPIO) ? |
626 | "PIO" : | |
627 | ((error_bits & SCHIZO_CEAFSR_PDRD) ? | |
628 | "DMA Read" : | |
629 | ((error_bits & SCHIZO_CEAFSR_PDWR) ? | |
630 | "DMA Write" : "???"))))); | |
631 | ||
632 | /* XXX Use syndrome and afar to print out module string just like | |
633 | * XXX UDB CE trap handler does... -DaveM | |
634 | */ | |
6c108f12 DM |
635 | printk("%s: bytemask[%04lx] qword_offset[%lx] SAFARI_AID[%02lx]\n", |
636 | pbm->name, | |
1da177e4 LT |
637 | (afsr & SCHIZO_UEAFSR_BMSK) >> 32UL, |
638 | (afsr & SCHIZO_UEAFSR_QOFF) >> 30UL, | |
639 | (afsr & SCHIZO_UEAFSR_AID) >> 24UL); | |
6c108f12 DM |
640 | printk("%s: partial[%d] owned_in[%d] mtag[%lx] mtag_synd[%lx] ecc_sync[%lx]\n", |
641 | pbm->name, | |
1da177e4 LT |
642 | (afsr & SCHIZO_UEAFSR_PARTIAL) ? 1 : 0, |
643 | (afsr & SCHIZO_UEAFSR_OWNEDIN) ? 1 : 0, | |
644 | (afsr & SCHIZO_UEAFSR_MTAG) >> 13UL, | |
645 | (afsr & SCHIZO_UEAFSR_MTAGSYND) >> 16UL, | |
646 | (afsr & SCHIZO_UEAFSR_ECCSYND) >> 0UL); | |
6c108f12 DM |
647 | printk("%s: CE AFAR [%016lx]\n", pbm->name, afar); |
648 | printk("%s: CE Secondary errors [", pbm->name); | |
1da177e4 LT |
649 | reported = 0; |
650 | if (afsr & SCHIZO_CEAFSR_SPIO) { | |
651 | reported++; | |
652 | printk("(PIO)"); | |
653 | } | |
654 | if (afsr & SCHIZO_CEAFSR_SDMA) { | |
655 | reported++; | |
656 | printk("(DMA)"); | |
657 | } | |
658 | if (!reported) | |
659 | printk("(none)"); | |
660 | printk("]\n"); | |
661 | ||
1da177e4 LT |
662 | return IRQ_HANDLED; |
663 | } | |
664 | ||
665 | #define SCHIZO_PCI_AFSR 0x2010UL | |
666 | #define SCHIZO_PCI_AFAR 0x2018UL | |
667 | ||
668 | #define SCHIZO_PCIAFSR_PMA 0x8000000000000000UL /* Schizo/Tomatillo */ | |
669 | #define SCHIZO_PCIAFSR_PTA 0x4000000000000000UL /* Schizo/Tomatillo */ | |
670 | #define SCHIZO_PCIAFSR_PRTRY 0x2000000000000000UL /* Schizo/Tomatillo */ | |
671 | #define SCHIZO_PCIAFSR_PPERR 0x1000000000000000UL /* Schizo/Tomatillo */ | |
672 | #define SCHIZO_PCIAFSR_PTTO 0x0800000000000000UL /* Schizo/Tomatillo */ | |
673 | #define SCHIZO_PCIAFSR_PUNUS 0x0400000000000000UL /* Schizo */ | |
674 | #define SCHIZO_PCIAFSR_SMA 0x0200000000000000UL /* Schizo/Tomatillo */ | |
675 | #define SCHIZO_PCIAFSR_STA 0x0100000000000000UL /* Schizo/Tomatillo */ | |
676 | #define SCHIZO_PCIAFSR_SRTRY 0x0080000000000000UL /* Schizo/Tomatillo */ | |
677 | #define SCHIZO_PCIAFSR_SPERR 0x0040000000000000UL /* Schizo/Tomatillo */ | |
678 | #define SCHIZO_PCIAFSR_STTO 0x0020000000000000UL /* Schizo/Tomatillo */ | |
679 | #define SCHIZO_PCIAFSR_SUNUS 0x0010000000000000UL /* Schizo */ | |
680 | #define SCHIZO_PCIAFSR_BMSK 0x000003ff00000000UL /* Schizo/Tomatillo */ | |
681 | #define SCHIZO_PCIAFSR_BLK 0x0000000080000000UL /* Schizo/Tomatillo */ | |
682 | #define SCHIZO_PCIAFSR_CFG 0x0000000040000000UL /* Schizo/Tomatillo */ | |
683 | #define SCHIZO_PCIAFSR_MEM 0x0000000020000000UL /* Schizo/Tomatillo */ | |
684 | #define SCHIZO_PCIAFSR_IO 0x0000000010000000UL /* Schizo/Tomatillo */ | |
685 | ||
686 | #define SCHIZO_PCI_CTRL (0x2000UL) | |
687 | #define SCHIZO_PCICTRL_BUS_UNUS (1UL << 63UL) /* Safari */ | |
9fba62a5 | 688 | #define SCHIZO_PCICTRL_DTO_INT (1UL << 61UL) /* Tomatillo */ |
1da177e4 LT |
689 | #define SCHIZO_PCICTRL_ARB_PRIO (0x1ff << 52UL) /* Tomatillo */ |
690 | #define SCHIZO_PCICTRL_ESLCK (1UL << 51UL) /* Safari */ | |
691 | #define SCHIZO_PCICTRL_ERRSLOT (7UL << 48UL) /* Safari */ | |
692 | #define SCHIZO_PCICTRL_TTO_ERR (1UL << 38UL) /* Safari/Tomatillo */ | |
693 | #define SCHIZO_PCICTRL_RTRY_ERR (1UL << 37UL) /* Safari/Tomatillo */ | |
694 | #define SCHIZO_PCICTRL_DTO_ERR (1UL << 36UL) /* Safari/Tomatillo */ | |
695 | #define SCHIZO_PCICTRL_SBH_ERR (1UL << 35UL) /* Safari */ | |
696 | #define SCHIZO_PCICTRL_SERR (1UL << 34UL) /* Safari/Tomatillo */ | |
697 | #define SCHIZO_PCICTRL_PCISPD (1UL << 33UL) /* Safari */ | |
698 | #define SCHIZO_PCICTRL_MRM_PREF (1UL << 30UL) /* Tomatillo */ | |
699 | #define SCHIZO_PCICTRL_RDO_PREF (1UL << 29UL) /* Tomatillo */ | |
700 | #define SCHIZO_PCICTRL_RDL_PREF (1UL << 28UL) /* Tomatillo */ | |
701 | #define SCHIZO_PCICTRL_PTO (3UL << 24UL) /* Safari/Tomatillo */ | |
702 | #define SCHIZO_PCICTRL_PTO_SHIFT 24UL | |
703 | #define SCHIZO_PCICTRL_TRWSW (7UL << 21UL) /* Tomatillo */ | |
704 | #define SCHIZO_PCICTRL_F_TGT_A (1UL << 20UL) /* Tomatillo */ | |
705 | #define SCHIZO_PCICTRL_S_DTO_INT (1UL << 19UL) /* Safari */ | |
706 | #define SCHIZO_PCICTRL_F_TGT_RT (1UL << 19UL) /* Tomatillo */ | |
707 | #define SCHIZO_PCICTRL_SBH_INT (1UL << 18UL) /* Safari */ | |
708 | #define SCHIZO_PCICTRL_T_DTO_INT (1UL << 18UL) /* Tomatillo */ | |
709 | #define SCHIZO_PCICTRL_EEN (1UL << 17UL) /* Safari/Tomatillo */ | |
710 | #define SCHIZO_PCICTRL_PARK (1UL << 16UL) /* Safari/Tomatillo */ | |
711 | #define SCHIZO_PCICTRL_PCIRST (1UL << 8UL) /* Safari */ | |
712 | #define SCHIZO_PCICTRL_ARB_S (0x3fUL << 0UL) /* Safari */ | |
713 | #define SCHIZO_PCICTRL_ARB_T (0xffUL << 0UL) /* Tomatillo */ | |
714 | ||
715 | static irqreturn_t schizo_pcierr_intr_other(struct pci_pbm_info *pbm) | |
716 | { | |
717 | unsigned long csr_reg, csr, csr_error_bits; | |
718 | irqreturn_t ret = IRQ_NONE; | |
719 | u16 stat; | |
720 | ||
721 | csr_reg = pbm->pbm_regs + SCHIZO_PCI_CTRL; | |
722 | csr = schizo_read(csr_reg); | |
723 | csr_error_bits = | |
724 | csr & (SCHIZO_PCICTRL_BUS_UNUS | | |
725 | SCHIZO_PCICTRL_TTO_ERR | | |
726 | SCHIZO_PCICTRL_RTRY_ERR | | |
727 | SCHIZO_PCICTRL_DTO_ERR | | |
728 | SCHIZO_PCICTRL_SBH_ERR | | |
729 | SCHIZO_PCICTRL_SERR); | |
730 | if (csr_error_bits) { | |
731 | /* Clear the errors. */ | |
732 | schizo_write(csr_reg, csr); | |
733 | ||
734 | /* Log 'em. */ | |
735 | if (csr_error_bits & SCHIZO_PCICTRL_BUS_UNUS) | |
736 | printk("%s: Bus unusable error asserted.\n", | |
737 | pbm->name); | |
738 | if (csr_error_bits & SCHIZO_PCICTRL_TTO_ERR) | |
739 | printk("%s: PCI TRDY# timeout error asserted.\n", | |
740 | pbm->name); | |
741 | if (csr_error_bits & SCHIZO_PCICTRL_RTRY_ERR) | |
742 | printk("%s: PCI excessive retry error asserted.\n", | |
743 | pbm->name); | |
744 | if (csr_error_bits & SCHIZO_PCICTRL_DTO_ERR) | |
745 | printk("%s: PCI discard timeout error asserted.\n", | |
746 | pbm->name); | |
747 | if (csr_error_bits & SCHIZO_PCICTRL_SBH_ERR) | |
748 | printk("%s: PCI streaming byte hole error asserted.\n", | |
749 | pbm->name); | |
750 | if (csr_error_bits & SCHIZO_PCICTRL_SERR) | |
751 | printk("%s: PCI SERR signal asserted.\n", | |
752 | pbm->name); | |
753 | ret = IRQ_HANDLED; | |
754 | } | |
755 | pci_read_config_word(pbm->pci_bus->self, PCI_STATUS, &stat); | |
756 | if (stat & (PCI_STATUS_PARITY | | |
757 | PCI_STATUS_SIG_TARGET_ABORT | | |
758 | PCI_STATUS_REC_TARGET_ABORT | | |
759 | PCI_STATUS_REC_MASTER_ABORT | | |
760 | PCI_STATUS_SIG_SYSTEM_ERROR)) { | |
761 | printk("%s: PCI bus error, PCI_STATUS[%04x]\n", | |
762 | pbm->name, stat); | |
763 | pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff); | |
764 | ret = IRQ_HANDLED; | |
765 | } | |
766 | return ret; | |
767 | } | |
768 | ||
6d24c8dc | 769 | static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id) |
1da177e4 LT |
770 | { |
771 | struct pci_pbm_info *pbm = dev_id; | |
772 | struct pci_controller_info *p = pbm->parent; | |
773 | unsigned long afsr_reg, afar_reg, base; | |
774 | unsigned long afsr, afar, error_bits; | |
775 | int reported; | |
776 | ||
777 | base = pbm->pbm_regs; | |
778 | ||
779 | afsr_reg = base + SCHIZO_PCI_AFSR; | |
780 | afar_reg = base + SCHIZO_PCI_AFAR; | |
781 | ||
782 | /* Latch error status. */ | |
783 | afar = schizo_read(afar_reg); | |
784 | afsr = schizo_read(afsr_reg); | |
785 | ||
786 | /* Clear primary/secondary error status bits. */ | |
787 | error_bits = afsr & | |
788 | (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA | | |
789 | SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR | | |
790 | SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS | | |
791 | SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA | | |
792 | SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR | | |
793 | SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS); | |
794 | if (!error_bits) | |
795 | return schizo_pcierr_intr_other(pbm); | |
796 | schizo_write(afsr_reg, error_bits); | |
797 | ||
798 | /* Log the error. */ | |
799 | printk("%s: PCI Error, primary error type[%s]\n", | |
800 | pbm->name, | |
801 | (((error_bits & SCHIZO_PCIAFSR_PMA) ? | |
802 | "Master Abort" : | |
803 | ((error_bits & SCHIZO_PCIAFSR_PTA) ? | |
804 | "Target Abort" : | |
805 | ((error_bits & SCHIZO_PCIAFSR_PRTRY) ? | |
806 | "Excessive Retries" : | |
807 | ((error_bits & SCHIZO_PCIAFSR_PPERR) ? | |
808 | "Parity Error" : | |
809 | ((error_bits & SCHIZO_PCIAFSR_PTTO) ? | |
810 | "Timeout" : | |
811 | ((error_bits & SCHIZO_PCIAFSR_PUNUS) ? | |
812 | "Bus Unusable" : "???")))))))); | |
813 | printk("%s: bytemask[%04lx] was_block(%d) space(%s)\n", | |
814 | pbm->name, | |
815 | (afsr & SCHIZO_PCIAFSR_BMSK) >> 32UL, | |
816 | (afsr & SCHIZO_PCIAFSR_BLK) ? 1 : 0, | |
817 | ((afsr & SCHIZO_PCIAFSR_CFG) ? | |
818 | "Config" : | |
819 | ((afsr & SCHIZO_PCIAFSR_MEM) ? | |
820 | "Memory" : | |
821 | ((afsr & SCHIZO_PCIAFSR_IO) ? | |
822 | "I/O" : "???")))); | |
823 | printk("%s: PCI AFAR [%016lx]\n", | |
824 | pbm->name, afar); | |
825 | printk("%s: PCI Secondary errors [", | |
826 | pbm->name); | |
827 | reported = 0; | |
828 | if (afsr & SCHIZO_PCIAFSR_SMA) { | |
829 | reported++; | |
830 | printk("(Master Abort)"); | |
831 | } | |
832 | if (afsr & SCHIZO_PCIAFSR_STA) { | |
833 | reported++; | |
834 | printk("(Target Abort)"); | |
835 | } | |
836 | if (afsr & SCHIZO_PCIAFSR_SRTRY) { | |
837 | reported++; | |
838 | printk("(Excessive Retries)"); | |
839 | } | |
840 | if (afsr & SCHIZO_PCIAFSR_SPERR) { | |
841 | reported++; | |
842 | printk("(Parity Error)"); | |
843 | } | |
844 | if (afsr & SCHIZO_PCIAFSR_STTO) { | |
845 | reported++; | |
846 | printk("(Timeout)"); | |
847 | } | |
848 | if (afsr & SCHIZO_PCIAFSR_SUNUS) { | |
849 | reported++; | |
850 | printk("(Bus Unusable)"); | |
851 | } | |
852 | if (!reported) | |
853 | printk("(none)"); | |
854 | printk("]\n"); | |
855 | ||
856 | /* For the error types shown, scan PBM's PCI bus for devices | |
857 | * which have logged that error type. | |
858 | */ | |
859 | ||
860 | /* If we see a Target Abort, this could be the result of an | |
861 | * IOMMU translation error of some sort. It is extremely | |
862 | * useful to log this information as usually it indicates | |
863 | * a bug in the IOMMU support code or a PCI device driver. | |
864 | */ | |
865 | if (error_bits & (SCHIZO_PCIAFSR_PTA | SCHIZO_PCIAFSR_STA)) { | |
866 | schizo_check_iommu_error(p, PCI_ERR); | |
6c108f12 | 867 | pci_scan_for_target_abort(pbm, pbm->pci_bus); |
1da177e4 LT |
868 | } |
869 | if (error_bits & (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_SMA)) | |
6c108f12 | 870 | pci_scan_for_master_abort(pbm, pbm->pci_bus); |
1da177e4 LT |
871 | |
872 | /* For excessive retries, PSYCHO/PBM will abort the device | |
873 | * and there is no way to specifically check for excessive | |
874 | * retries in the config space status registers. So what | |
875 | * we hope is that we'll catch it via the master/target | |
876 | * abort events. | |
877 | */ | |
878 | ||
879 | if (error_bits & (SCHIZO_PCIAFSR_PPERR | SCHIZO_PCIAFSR_SPERR)) | |
6c108f12 | 880 | pci_scan_for_parity_error(pbm, pbm->pci_bus); |
1da177e4 | 881 | |
1da177e4 LT |
882 | return IRQ_HANDLED; |
883 | } | |
884 | ||
885 | #define SCHIZO_SAFARI_ERRLOG 0x10018UL | |
886 | ||
887 | #define SAFARI_ERRLOG_ERROUT 0x8000000000000000UL | |
888 | ||
889 | #define BUS_ERROR_BADCMD 0x4000000000000000UL /* Schizo/Tomatillo */ | |
890 | #define BUS_ERROR_SSMDIS 0x2000000000000000UL /* Safari */ | |
891 | #define BUS_ERROR_BADMA 0x1000000000000000UL /* Safari */ | |
892 | #define BUS_ERROR_BADMB 0x0800000000000000UL /* Safari */ | |
893 | #define BUS_ERROR_BADMC 0x0400000000000000UL /* Safari */ | |
894 | #define BUS_ERROR_SNOOP_GR 0x0000000000200000UL /* Tomatillo */ | |
895 | #define BUS_ERROR_SNOOP_PCI 0x0000000000100000UL /* Tomatillo */ | |
896 | #define BUS_ERROR_SNOOP_RD 0x0000000000080000UL /* Tomatillo */ | |
897 | #define BUS_ERROR_SNOOP_RDS 0x0000000000020000UL /* Tomatillo */ | |
898 | #define BUS_ERROR_SNOOP_RDSA 0x0000000000010000UL /* Tomatillo */ | |
899 | #define BUS_ERROR_SNOOP_OWN 0x0000000000008000UL /* Tomatillo */ | |
900 | #define BUS_ERROR_SNOOP_RDO 0x0000000000004000UL /* Tomatillo */ | |
901 | #define BUS_ERROR_CPU1PS 0x0000000000002000UL /* Safari */ | |
902 | #define BUS_ERROR_WDATA_PERR 0x0000000000002000UL /* Tomatillo */ | |
903 | #define BUS_ERROR_CPU1PB 0x0000000000001000UL /* Safari */ | |
904 | #define BUS_ERROR_CTRL_PERR 0x0000000000001000UL /* Tomatillo */ | |
905 | #define BUS_ERROR_CPU0PS 0x0000000000000800UL /* Safari */ | |
906 | #define BUS_ERROR_SNOOP_ERR 0x0000000000000800UL /* Tomatillo */ | |
907 | #define BUS_ERROR_CPU0PB 0x0000000000000400UL /* Safari */ | |
908 | #define BUS_ERROR_JBUS_ILL_B 0x0000000000000400UL /* Tomatillo */ | |
909 | #define BUS_ERROR_CIQTO 0x0000000000000200UL /* Safari */ | |
910 | #define BUS_ERROR_LPQTO 0x0000000000000100UL /* Safari */ | |
911 | #define BUS_ERROR_JBUS_ILL_C 0x0000000000000100UL /* Tomatillo */ | |
912 | #define BUS_ERROR_SFPQTO 0x0000000000000080UL /* Safari */ | |
913 | #define BUS_ERROR_UFPQTO 0x0000000000000040UL /* Safari */ | |
914 | #define BUS_ERROR_RD_PERR 0x0000000000000040UL /* Tomatillo */ | |
915 | #define BUS_ERROR_APERR 0x0000000000000020UL /* Safari/Tomatillo */ | |
916 | #define BUS_ERROR_UNMAP 0x0000000000000010UL /* Safari/Tomatillo */ | |
917 | #define BUS_ERROR_BUSERR 0x0000000000000004UL /* Safari/Tomatillo */ | |
918 | #define BUS_ERROR_TIMEOUT 0x0000000000000002UL /* Safari/Tomatillo */ | |
919 | #define BUS_ERROR_ILL 0x0000000000000001UL /* Safari */ | |
920 | ||
921 | /* We only expect UNMAP errors here. The rest of the Safari errors | |
922 | * are marked fatal and thus cause a system reset. | |
923 | */ | |
6d24c8dc | 924 | static irqreturn_t schizo_safarierr_intr(int irq, void *dev_id) |
1da177e4 | 925 | { |
34768bc8 DM |
926 | struct pci_pbm_info *pbm = dev_id; |
927 | struct pci_controller_info *p = pbm->parent; | |
1da177e4 LT |
928 | u64 errlog; |
929 | ||
34768bc8 DM |
930 | errlog = schizo_read(pbm->controller_regs + SCHIZO_SAFARI_ERRLOG); |
931 | schizo_write(pbm->controller_regs + SCHIZO_SAFARI_ERRLOG, | |
1da177e4 LT |
932 | errlog & ~(SAFARI_ERRLOG_ERROUT)); |
933 | ||
934 | if (!(errlog & BUS_ERROR_UNMAP)) { | |
6c108f12 DM |
935 | printk("%s: Unexpected Safari/JBUS error interrupt, errlog[%016lx]\n", |
936 | pbm->name, errlog); | |
1da177e4 | 937 | |
1da177e4 LT |
938 | return IRQ_HANDLED; |
939 | } | |
940 | ||
6c108f12 DM |
941 | printk("%s: Safari/JBUS interrupt, UNMAPPED error, interrogating IOMMUs.\n", |
942 | pbm->name); | |
1da177e4 LT |
943 | schizo_check_iommu_error(p, SAFARI_ERR); |
944 | ||
1da177e4 LT |
945 | return IRQ_HANDLED; |
946 | } | |
947 | ||
948 | /* Nearly identical to PSYCHO equivalents... */ | |
949 | #define SCHIZO_ECC_CTRL 0x10020UL | |
950 | #define SCHIZO_ECCCTRL_EE 0x8000000000000000UL /* Enable ECC Checking */ | |
951 | #define SCHIZO_ECCCTRL_UE 0x4000000000000000UL /* Enable UE Interrupts */ | |
952 | #define SCHIZO_ECCCTRL_CE 0x2000000000000000UL /* Enable CE INterrupts */ | |
953 | ||
954 | #define SCHIZO_SAFARI_ERRCTRL 0x10008UL | |
955 | #define SCHIZO_SAFERRCTRL_EN 0x8000000000000000UL | |
956 | #define SCHIZO_SAFARI_IRQCTRL 0x10010UL | |
957 | #define SCHIZO_SAFIRQCTRL_EN 0x8000000000000000UL | |
958 | ||
34768bc8 DM |
959 | static int pbm_routes_this_ino(struct pci_pbm_info *pbm, u32 ino) |
960 | { | |
961 | ino &= IMAP_INO; | |
962 | ||
963 | if (pbm->ino_bitmap & (1UL << ino)) | |
964 | return 1; | |
965 | ||
966 | return 0; | |
967 | } | |
968 | ||
1da177e4 LT |
969 | /* How the Tomatillo IRQs are routed around is pure guesswork here. |
970 | * | |
971 | * All the Tomatillo devices I see in prtconf dumps seem to have only | |
972 | * a single PCI bus unit attached to it. It would seem they are seperate | |
973 | * devices because their PortID (ie. JBUS ID) values are all different | |
974 | * and thus the registers are mapped to totally different locations. | |
975 | * | |
976 | * However, two Tomatillo's look "similar" in that the only difference | |
977 | * in their PortID is the lowest bit. | |
978 | * | |
979 | * So if we were to ignore this lower bit, it certainly looks like two | |
980 | * PCI bus units of the same Tomatillo. I still have not really | |
981 | * figured this out... | |
982 | */ | |
34768bc8 | 983 | static void tomatillo_register_error_handlers(struct pci_pbm_info *pbm) |
1da177e4 | 984 | { |
34768bc8 | 985 | struct of_device *op = of_find_device_by_node(pbm->prom_node); |
1da177e4 | 986 | u64 tmp, err_mask, err_no_mask; |
af80318e | 987 | int err; |
1da177e4 | 988 | |
2b1e5978 DM |
989 | /* Tomatillo IRQ property layout is: |
990 | * 0: PCIERR | |
991 | * 1: UE ERR | |
992 | * 2: CE ERR | |
993 | * 3: SERR | |
994 | * 4: POWER FAIL? | |
995 | */ | |
996 | ||
af80318e DM |
997 | if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) { |
998 | err = request_irq(op->irqs[1], schizo_ue_intr, 0, | |
999 | "TOMATILLO_UE", pbm); | |
1000 | if (err) | |
1001 | printk(KERN_WARNING "%s: Could not register UE, " | |
1002 | "err=%d\n", pbm->name, err); | |
1003 | } | |
1004 | if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) { | |
1005 | err = request_irq(op->irqs[2], schizo_ce_intr, 0, | |
1006 | "TOMATILLO_CE", pbm); | |
1007 | if (err) | |
1008 | printk(KERN_WARNING "%s: Could not register CE, " | |
1009 | "err=%d\n", pbm->name, err); | |
1010 | } | |
1011 | err = 0; | |
1012 | if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) { | |
1013 | err = request_irq(op->irqs[0], schizo_pcierr_intr, 0, | |
1014 | "TOMATILLO_PCIERR", pbm); | |
1015 | } else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) { | |
1016 | err = request_irq(op->irqs[0], schizo_pcierr_intr, 0, | |
1017 | "TOMATILLO_PCIERR", pbm); | |
1018 | } | |
1019 | if (err) | |
1020 | printk(KERN_WARNING "%s: Could not register PCIERR, " | |
1021 | "err=%d\n", pbm->name, err); | |
1022 | ||
1023 | if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) { | |
1024 | err = request_irq(op->irqs[3], schizo_safarierr_intr, 0, | |
1025 | "TOMATILLO_SERR", pbm); | |
1026 | if (err) | |
1027 | printk(KERN_WARNING "%s: Could not register SERR, " | |
1028 | "err=%d\n", pbm->name, err); | |
1029 | } | |
34768bc8 DM |
1030 | |
1031 | /* Enable UE and CE interrupts for controller. */ | |
1032 | schizo_write(pbm->controller_regs + SCHIZO_ECC_CTRL, | |
1da177e4 LT |
1033 | (SCHIZO_ECCCTRL_EE | |
1034 | SCHIZO_ECCCTRL_UE | | |
1035 | SCHIZO_ECCCTRL_CE)); | |
1036 | ||
1037 | /* Enable PCI Error interrupts and clear error | |
1038 | * bits. | |
1039 | */ | |
1040 | err_mask = (SCHIZO_PCICTRL_BUS_UNUS | | |
1041 | SCHIZO_PCICTRL_TTO_ERR | | |
1042 | SCHIZO_PCICTRL_RTRY_ERR | | |
1043 | SCHIZO_PCICTRL_SERR | | |
1044 | SCHIZO_PCICTRL_EEN); | |
1045 | ||
1046 | err_no_mask = SCHIZO_PCICTRL_DTO_ERR; | |
1047 | ||
34768bc8 | 1048 | tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_CTRL); |
1da177e4 LT |
1049 | tmp |= err_mask; |
1050 | tmp &= ~err_no_mask; | |
34768bc8 | 1051 | schizo_write(pbm->pbm_regs + SCHIZO_PCI_CTRL, tmp); |
1da177e4 LT |
1052 | |
1053 | err_mask = (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA | | |
1054 | SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR | | |
1055 | SCHIZO_PCIAFSR_PTTO | | |
1056 | SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA | | |
1057 | SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR | | |
1058 | SCHIZO_PCIAFSR_STTO); | |
1059 | ||
34768bc8 | 1060 | schizo_write(pbm->pbm_regs + SCHIZO_PCI_AFSR, err_mask); |
1da177e4 LT |
1061 | |
1062 | err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SNOOP_GR | | |
1063 | BUS_ERROR_SNOOP_PCI | BUS_ERROR_SNOOP_RD | | |
1064 | BUS_ERROR_SNOOP_RDS | BUS_ERROR_SNOOP_RDSA | | |
1065 | BUS_ERROR_SNOOP_OWN | BUS_ERROR_SNOOP_RDO | | |
1066 | BUS_ERROR_WDATA_PERR | BUS_ERROR_CTRL_PERR | | |
1067 | BUS_ERROR_SNOOP_ERR | BUS_ERROR_JBUS_ILL_B | | |
1068 | BUS_ERROR_JBUS_ILL_C | BUS_ERROR_RD_PERR | | |
1069 | BUS_ERROR_APERR | BUS_ERROR_UNMAP | | |
1070 | BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT); | |
1071 | ||
34768bc8 | 1072 | schizo_write(pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL, |
1da177e4 LT |
1073 | (SCHIZO_SAFERRCTRL_EN | err_mask)); |
1074 | ||
34768bc8 | 1075 | schizo_write(pbm->controller_regs + SCHIZO_SAFARI_IRQCTRL, |
1da177e4 LT |
1076 | (SCHIZO_SAFIRQCTRL_EN | (BUS_ERROR_UNMAP))); |
1077 | } | |
1078 | ||
34768bc8 | 1079 | static void schizo_register_error_handlers(struct pci_pbm_info *pbm) |
1da177e4 | 1080 | { |
34768bc8 | 1081 | struct of_device *op = of_find_device_by_node(pbm->prom_node); |
1da177e4 | 1082 | u64 tmp, err_mask, err_no_mask; |
af80318e | 1083 | int err; |
1da177e4 | 1084 | |
2b1e5978 DM |
1085 | /* Schizo IRQ property layout is: |
1086 | * 0: PCIERR | |
1087 | * 1: UE ERR | |
1088 | * 2: CE ERR | |
1089 | * 3: SERR | |
1090 | * 4: POWER FAIL? | |
1091 | */ | |
1092 | ||
af80318e DM |
1093 | if (pbm_routes_this_ino(pbm, SCHIZO_UE_INO)) { |
1094 | err = request_irq(op->irqs[1], schizo_ue_intr, 0, | |
1095 | "SCHIZO_UE", pbm); | |
1096 | if (err) | |
1097 | printk(KERN_WARNING "%s: Could not register UE, " | |
1098 | "err=%d\n", pbm->name, err); | |
1099 | } | |
1100 | if (pbm_routes_this_ino(pbm, SCHIZO_CE_INO)) { | |
1101 | err = request_irq(op->irqs[2], schizo_ce_intr, 0, | |
1102 | "SCHIZO_CE", pbm); | |
1103 | if (err) | |
1104 | printk(KERN_WARNING "%s: Could not register CE, " | |
1105 | "err=%d\n", pbm->name, err); | |
1106 | } | |
1107 | err = 0; | |
1108 | if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_A_INO)) { | |
1109 | err = request_irq(op->irqs[0], schizo_pcierr_intr, 0, | |
1110 | "SCHIZO_PCIERR", pbm); | |
1111 | } else if (pbm_routes_this_ino(pbm, SCHIZO_PCIERR_B_INO)) { | |
1112 | err = request_irq(op->irqs[0], schizo_pcierr_intr, 0, | |
1113 | "SCHIZO_PCIERR", pbm); | |
1114 | } | |
1115 | if (err) | |
1116 | printk(KERN_WARNING "%s: Could not register PCIERR, " | |
1117 | "err=%d\n", pbm->name, err); | |
1118 | ||
1119 | if (pbm_routes_this_ino(pbm, SCHIZO_SERR_INO)) { | |
1120 | err = request_irq(op->irqs[3], schizo_safarierr_intr, 0, | |
1121 | "SCHIZO_SERR", pbm); | |
1122 | if (err) | |
1123 | printk(KERN_WARNING "%s: Could not register SERR, " | |
1124 | "err=%d\n", pbm->name, err); | |
1125 | } | |
1da177e4 LT |
1126 | |
1127 | /* Enable UE and CE interrupts for controller. */ | |
34768bc8 | 1128 | schizo_write(pbm->controller_regs + SCHIZO_ECC_CTRL, |
1da177e4 LT |
1129 | (SCHIZO_ECCCTRL_EE | |
1130 | SCHIZO_ECCCTRL_UE | | |
1131 | SCHIZO_ECCCTRL_CE)); | |
1132 | ||
1133 | err_mask = (SCHIZO_PCICTRL_BUS_UNUS | | |
1134 | SCHIZO_PCICTRL_ESLCK | | |
1135 | SCHIZO_PCICTRL_TTO_ERR | | |
1136 | SCHIZO_PCICTRL_RTRY_ERR | | |
1137 | SCHIZO_PCICTRL_SBH_ERR | | |
1138 | SCHIZO_PCICTRL_SERR | | |
1139 | SCHIZO_PCICTRL_EEN); | |
1140 | ||
1141 | err_no_mask = (SCHIZO_PCICTRL_DTO_ERR | | |
1142 | SCHIZO_PCICTRL_SBH_INT); | |
1143 | ||
1144 | /* Enable PCI Error interrupts and clear error | |
1145 | * bits for each PBM. | |
1146 | */ | |
34768bc8 | 1147 | tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_CTRL); |
1da177e4 LT |
1148 | tmp |= err_mask; |
1149 | tmp &= ~err_no_mask; | |
34768bc8 | 1150 | schizo_write(pbm->pbm_regs + SCHIZO_PCI_CTRL, tmp); |
1da177e4 | 1151 | |
34768bc8 | 1152 | schizo_write(pbm->pbm_regs + SCHIZO_PCI_AFSR, |
1da177e4 LT |
1153 | (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_PTA | |
1154 | SCHIZO_PCIAFSR_PRTRY | SCHIZO_PCIAFSR_PPERR | | |
1155 | SCHIZO_PCIAFSR_PTTO | SCHIZO_PCIAFSR_PUNUS | | |
1156 | SCHIZO_PCIAFSR_SMA | SCHIZO_PCIAFSR_STA | | |
1157 | SCHIZO_PCIAFSR_SRTRY | SCHIZO_PCIAFSR_SPERR | | |
1158 | SCHIZO_PCIAFSR_STTO | SCHIZO_PCIAFSR_SUNUS)); | |
1159 | ||
1160 | /* Make all Safari error conditions fatal except unmapped | |
1161 | * errors which we make generate interrupts. | |
1162 | */ | |
1163 | err_mask = (BUS_ERROR_BADCMD | BUS_ERROR_SSMDIS | | |
1164 | BUS_ERROR_BADMA | BUS_ERROR_BADMB | | |
1165 | BUS_ERROR_BADMC | | |
1166 | BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB | | |
1167 | BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB | | |
1168 | BUS_ERROR_CIQTO | | |
1169 | BUS_ERROR_LPQTO | BUS_ERROR_SFPQTO | | |
1170 | BUS_ERROR_UFPQTO | BUS_ERROR_APERR | | |
1171 | BUS_ERROR_BUSERR | BUS_ERROR_TIMEOUT | | |
1172 | BUS_ERROR_ILL); | |
1173 | #if 1 | |
1174 | /* XXX Something wrong with some Excalibur systems | |
1175 | * XXX Sun is shipping. The behavior on a 2-cpu | |
1176 | * XXX machine is that both CPU1 parity error bits | |
1177 | * XXX are set and are immediately set again when | |
1178 | * XXX their error status bits are cleared. Just | |
1179 | * XXX ignore them for now. -DaveM | |
1180 | */ | |
1181 | err_mask &= ~(BUS_ERROR_CPU1PS | BUS_ERROR_CPU1PB | | |
1182 | BUS_ERROR_CPU0PS | BUS_ERROR_CPU0PB); | |
1183 | #endif | |
1184 | ||
34768bc8 | 1185 | schizo_write(pbm->controller_regs + SCHIZO_SAFARI_ERRCTRL, |
1da177e4 | 1186 | (SCHIZO_SAFERRCTRL_EN | err_mask)); |
1da177e4 LT |
1187 | } |
1188 | ||
085ae41f | 1189 | static void pbm_config_busmastering(struct pci_pbm_info *pbm) |
1da177e4 LT |
1190 | { |
1191 | u8 *addr; | |
1192 | ||
1193 | /* Set cache-line size to 64 bytes, this is actually | |
1194 | * a nop but I do it for completeness. | |
1195 | */ | |
1196 | addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno, | |
1197 | 0, PCI_CACHE_LINE_SIZE); | |
1198 | pci_config_write8(addr, 64 / sizeof(u32)); | |
1199 | ||
1200 | /* Set PBM latency timer to 64 PCI clocks. */ | |
1201 | addr = schizo_pci_config_mkaddr(pbm, pbm->pci_first_busno, | |
1202 | 0, PCI_LATENCY_TIMER); | |
1203 | pci_config_write8(addr, 64); | |
1204 | } | |
1205 | ||
34768bc8 | 1206 | static void schizo_scan_bus(struct pci_pbm_info *pbm) |
1da177e4 | 1207 | { |
34768bc8 DM |
1208 | pbm_config_busmastering(pbm); |
1209 | pbm->is_66mhz_capable = | |
1210 | (of_find_property(pbm->prom_node, "66mhz-capable", NULL) | |
e87dc350 | 1211 | != NULL); |
bc606f3c | 1212 | |
34768bc8 | 1213 | pbm->pci_bus = pci_scan_one_pbm(pbm); |
1da177e4 | 1214 | |
34768bc8 DM |
1215 | if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) |
1216 | tomatillo_register_error_handlers(pbm); | |
1da177e4 | 1217 | else |
34768bc8 | 1218 | schizo_register_error_handlers(pbm); |
1da177e4 LT |
1219 | } |
1220 | ||
1da177e4 LT |
1221 | #define SCHIZO_STRBUF_CONTROL (0x02800UL) |
1222 | #define SCHIZO_STRBUF_FLUSH (0x02808UL) | |
1223 | #define SCHIZO_STRBUF_FSYNC (0x02810UL) | |
1224 | #define SCHIZO_STRBUF_CTXFLUSH (0x02818UL) | |
1225 | #define SCHIZO_STRBUF_CTXMATCH (0x10000UL) | |
1226 | ||
1227 | static void schizo_pbm_strbuf_init(struct pci_pbm_info *pbm) | |
1228 | { | |
1229 | unsigned long base = pbm->pbm_regs; | |
1230 | u64 control; | |
1231 | ||
1232 | if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) { | |
1233 | /* TOMATILLO lacks streaming cache. */ | |
1234 | return; | |
1235 | } | |
1236 | ||
1237 | /* SCHIZO has context flushing. */ | |
1238 | pbm->stc.strbuf_control = base + SCHIZO_STRBUF_CONTROL; | |
1239 | pbm->stc.strbuf_pflush = base + SCHIZO_STRBUF_FLUSH; | |
1240 | pbm->stc.strbuf_fsync = base + SCHIZO_STRBUF_FSYNC; | |
1241 | pbm->stc.strbuf_ctxflush = base + SCHIZO_STRBUF_CTXFLUSH; | |
1242 | pbm->stc.strbuf_ctxmatch_base = base + SCHIZO_STRBUF_CTXMATCH; | |
1243 | ||
1244 | pbm->stc.strbuf_flushflag = (volatile unsigned long *) | |
1245 | ((((unsigned long)&pbm->stc.__flushflag_buf[0]) | |
1246 | + 63UL) | |
1247 | & ~63UL); | |
1248 | pbm->stc.strbuf_flushflag_pa = (unsigned long) | |
1249 | __pa(pbm->stc.strbuf_flushflag); | |
1250 | ||
1251 | /* Turn off LRU locking and diag mode, enable the | |
1252 | * streaming buffer and leave the rerun-disable | |
1253 | * setting however OBP set it. | |
1254 | */ | |
1255 | control = schizo_read(pbm->stc.strbuf_control); | |
1256 | control &= ~(SCHIZO_STRBUF_CTRL_LPTR | | |
1257 | SCHIZO_STRBUF_CTRL_LENAB | | |
1258 | SCHIZO_STRBUF_CTRL_DENAB); | |
1259 | control |= SCHIZO_STRBUF_CTRL_ENAB; | |
1260 | schizo_write(pbm->stc.strbuf_control, control); | |
1261 | ||
1262 | pbm->stc.strbuf_enabled = 1; | |
1263 | } | |
1264 | ||
1265 | #define SCHIZO_IOMMU_CONTROL (0x00200UL) | |
1266 | #define SCHIZO_IOMMU_TSBBASE (0x00208UL) | |
1267 | #define SCHIZO_IOMMU_FLUSH (0x00210UL) | |
1268 | #define SCHIZO_IOMMU_CTXFLUSH (0x00218UL) | |
1269 | ||
1270 | static void schizo_pbm_iommu_init(struct pci_pbm_info *pbm) | |
1271 | { | |
16ce82d8 | 1272 | struct iommu *iommu = pbm->iommu; |
51e85136 | 1273 | unsigned long i, tagbase, database; |
e87dc350 | 1274 | struct property *prop; |
1da177e4 LT |
1275 | u32 vdma[2], dma_mask; |
1276 | u64 control; | |
e87dc350 | 1277 | int tsbsize; |
1da177e4 | 1278 | |
e87dc350 DM |
1279 | prop = of_find_property(pbm->prom_node, "virtual-dma", NULL); |
1280 | if (prop) { | |
1281 | u32 *val = prop->value; | |
1282 | ||
1283 | vdma[0] = val[0]; | |
1284 | vdma[1] = val[1]; | |
1285 | } else { | |
1da177e4 LT |
1286 | /* No property, use default values. */ |
1287 | vdma[0] = 0xc0000000; | |
1288 | vdma[1] = 0x40000000; | |
1289 | } | |
1290 | ||
1291 | dma_mask = vdma[0]; | |
1292 | switch (vdma[1]) { | |
1293 | case 0x20000000: | |
1294 | dma_mask |= 0x1fffffff; | |
1295 | tsbsize = 64; | |
1296 | break; | |
1297 | ||
1298 | case 0x40000000: | |
1299 | dma_mask |= 0x3fffffff; | |
1300 | tsbsize = 128; | |
1301 | break; | |
1302 | ||
1303 | case 0x80000000: | |
1304 | dma_mask |= 0x7fffffff; | |
1305 | tsbsize = 128; | |
1306 | break; | |
1307 | ||
1308 | default: | |
1309 | prom_printf("SCHIZO: strange virtual-dma size.\n"); | |
1310 | prom_halt(); | |
1311 | }; | |
1312 | ||
1da177e4 LT |
1313 | /* Register addresses, SCHIZO has iommu ctx flushing. */ |
1314 | iommu->iommu_control = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL; | |
1315 | iommu->iommu_tsbbase = pbm->pbm_regs + SCHIZO_IOMMU_TSBBASE; | |
1316 | iommu->iommu_flush = pbm->pbm_regs + SCHIZO_IOMMU_FLUSH; | |
1317 | iommu->iommu_ctxflush = pbm->pbm_regs + SCHIZO_IOMMU_CTXFLUSH; | |
1318 | ||
1319 | /* We use the main control/status register of SCHIZO as the write | |
1320 | * completion register. | |
1321 | */ | |
1322 | iommu->write_complete_reg = pbm->controller_regs + 0x10000UL; | |
1323 | ||
1324 | /* | |
1325 | * Invalidate TLB Entries. | |
1326 | */ | |
1327 | control = schizo_read(iommu->iommu_control); | |
1328 | control |= SCHIZO_IOMMU_CTRL_DENAB; | |
1329 | schizo_write(iommu->iommu_control, control); | |
1330 | ||
1331 | tagbase = SCHIZO_IOMMU_TAG, database = SCHIZO_IOMMU_DATA; | |
1332 | ||
1333 | for(i = 0; i < 16; i++) { | |
1334 | schizo_write(pbm->pbm_regs + tagbase + (i * 8UL), 0); | |
1335 | schizo_write(pbm->pbm_regs + database + (i * 8UL), 0); | |
1336 | } | |
1337 | ||
1338 | /* Leave diag mode enabled for full-flushing done | |
1339 | * in pci_iommu.c | |
1340 | */ | |
51e85136 | 1341 | pci_iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask); |
1da177e4 | 1342 | |
51e85136 | 1343 | schizo_write(iommu->iommu_tsbbase, __pa(iommu->page_table)); |
1da177e4 LT |
1344 | |
1345 | control = schizo_read(iommu->iommu_control); | |
1346 | control &= ~(SCHIZO_IOMMU_CTRL_TSBSZ | SCHIZO_IOMMU_CTRL_TBWSZ); | |
1347 | switch (tsbsize) { | |
1348 | case 64: | |
1349 | control |= SCHIZO_IOMMU_TSBSZ_64K; | |
1350 | break; | |
1351 | case 128: | |
1352 | control |= SCHIZO_IOMMU_TSBSZ_128K; | |
1353 | break; | |
1354 | }; | |
1355 | ||
1356 | control |= SCHIZO_IOMMU_CTRL_ENAB; | |
1357 | schizo_write(iommu->iommu_control, control); | |
1358 | } | |
1359 | ||
1360 | #define SCHIZO_PCI_IRQ_RETRY (0x1a00UL) | |
1361 | #define SCHIZO_IRQ_RETRY_INF 0xffUL | |
1362 | ||
1363 | #define SCHIZO_PCI_DIAG (0x2020UL) | |
1364 | #define SCHIZO_PCIDIAG_D_BADECC (1UL << 10UL) /* Disable BAD ECC errors (Schizo) */ | |
1365 | #define SCHIZO_PCIDIAG_D_BYPASS (1UL << 9UL) /* Disable MMU bypass mode (Schizo/Tomatillo) */ | |
1366 | #define SCHIZO_PCIDIAG_D_TTO (1UL << 8UL) /* Disable TTO errors (Schizo/Tomatillo) */ | |
1367 | #define SCHIZO_PCIDIAG_D_RTRYARB (1UL << 7UL) /* Disable retry arbitration (Schizo) */ | |
1368 | #define SCHIZO_PCIDIAG_D_RETRY (1UL << 6UL) /* Disable retry limit (Schizo/Tomatillo) */ | |
1369 | #define SCHIZO_PCIDIAG_D_INTSYNC (1UL << 5UL) /* Disable interrupt/DMA synch (Schizo/Tomatillo) */ | |
1370 | #define SCHIZO_PCIDIAG_I_DMA_PARITY (1UL << 3UL) /* Invert DMA parity (Schizo/Tomatillo) */ | |
1371 | #define SCHIZO_PCIDIAG_I_PIOD_PARITY (1UL << 2UL) /* Invert PIO data parity (Schizo/Tomatillo) */ | |
1372 | #define SCHIZO_PCIDIAG_I_PIOA_PARITY (1UL << 1UL) /* Invert PIO address parity (Schizo/Tomatillo) */ | |
1373 | ||
1374 | #define TOMATILLO_PCI_IOC_CSR (0x2248UL) | |
1375 | #define TOMATILLO_IOC_PART_WPENAB 0x0000000000080000UL | |
1376 | #define TOMATILLO_IOC_RDMULT_PENAB 0x0000000000040000UL | |
1377 | #define TOMATILLO_IOC_RDONE_PENAB 0x0000000000020000UL | |
1378 | #define TOMATILLO_IOC_RDLINE_PENAB 0x0000000000010000UL | |
1379 | #define TOMATILLO_IOC_RDMULT_PLEN 0x000000000000c000UL | |
1380 | #define TOMATILLO_IOC_RDMULT_PLEN_SHIFT 14UL | |
1381 | #define TOMATILLO_IOC_RDONE_PLEN 0x0000000000003000UL | |
1382 | #define TOMATILLO_IOC_RDONE_PLEN_SHIFT 12UL | |
1383 | #define TOMATILLO_IOC_RDLINE_PLEN 0x0000000000000c00UL | |
1384 | #define TOMATILLO_IOC_RDLINE_PLEN_SHIFT 10UL | |
1385 | #define TOMATILLO_IOC_PREF_OFF 0x00000000000003f8UL | |
1386 | #define TOMATILLO_IOC_PREF_OFF_SHIFT 3UL | |
1387 | #define TOMATILLO_IOC_RDMULT_CPENAB 0x0000000000000004UL | |
1388 | #define TOMATILLO_IOC_RDONE_CPENAB 0x0000000000000002UL | |
1389 | #define TOMATILLO_IOC_RDLINE_CPENAB 0x0000000000000001UL | |
1390 | ||
1391 | #define TOMATILLO_PCI_IOC_TDIAG (0x2250UL) | |
1392 | #define TOMATILLO_PCI_IOC_DDIAG (0x2290UL) | |
1393 | ||
085ae41f | 1394 | static void schizo_pbm_hw_init(struct pci_pbm_info *pbm) |
1da177e4 | 1395 | { |
e87dc350 | 1396 | struct property *prop; |
1da177e4 LT |
1397 | u64 tmp; |
1398 | ||
864ae180 | 1399 | schizo_write(pbm->pbm_regs + SCHIZO_PCI_IRQ_RETRY, 5); |
1da177e4 | 1400 | |
1da177e4 | 1401 | tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_CTRL); |
1da177e4 | 1402 | |
9fba62a5 DM |
1403 | /* Enable arbiter for all PCI slots. */ |
1404 | tmp |= 0xff; | |
1405 | ||
1da177e4 LT |
1406 | if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO && |
1407 | pbm->chip_version >= 0x2) | |
1408 | tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT; | |
1da177e4 | 1409 | |
e87dc350 DM |
1410 | prop = of_find_property(pbm->prom_node, "no-bus-parking", NULL); |
1411 | if (!prop) | |
1da177e4 | 1412 | tmp |= SCHIZO_PCICTRL_PARK; |
9fba62a5 DM |
1413 | else |
1414 | tmp &= ~SCHIZO_PCICTRL_PARK; | |
1da177e4 LT |
1415 | |
1416 | if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO && | |
1417 | pbm->chip_version <= 0x1) | |
9fba62a5 | 1418 | tmp |= SCHIZO_PCICTRL_DTO_INT; |
1da177e4 | 1419 | else |
9fba62a5 | 1420 | tmp &= ~SCHIZO_PCICTRL_DTO_INT; |
1da177e4 LT |
1421 | |
1422 | if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) | |
1423 | tmp |= (SCHIZO_PCICTRL_MRM_PREF | | |
1424 | SCHIZO_PCICTRL_RDO_PREF | | |
1425 | SCHIZO_PCICTRL_RDL_PREF); | |
1426 | ||
1427 | schizo_write(pbm->pbm_regs + SCHIZO_PCI_CTRL, tmp); | |
1428 | ||
1429 | tmp = schizo_read(pbm->pbm_regs + SCHIZO_PCI_DIAG); | |
1430 | tmp &= ~(SCHIZO_PCIDIAG_D_RTRYARB | | |
1431 | SCHIZO_PCIDIAG_D_RETRY | | |
1432 | SCHIZO_PCIDIAG_D_INTSYNC); | |
1433 | schizo_write(pbm->pbm_regs + SCHIZO_PCI_DIAG, tmp); | |
1434 | ||
1435 | if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO) { | |
1436 | /* Clear prefetch lengths to workaround a bug in | |
1437 | * Jalapeno... | |
1438 | */ | |
1439 | tmp = (TOMATILLO_IOC_PART_WPENAB | | |
1440 | (1 << TOMATILLO_IOC_PREF_OFF_SHIFT) | | |
1441 | TOMATILLO_IOC_RDMULT_CPENAB | | |
1442 | TOMATILLO_IOC_RDONE_CPENAB | | |
1443 | TOMATILLO_IOC_RDLINE_CPENAB); | |
1444 | ||
1445 | schizo_write(pbm->pbm_regs + TOMATILLO_PCI_IOC_CSR, | |
1446 | tmp); | |
1447 | } | |
1448 | } | |
1449 | ||
085ae41f | 1450 | static void schizo_pbm_init(struct pci_controller_info *p, |
e87dc350 | 1451 | struct device_node *dp, u32 portid, |
085ae41f | 1452 | int chip_type) |
1da177e4 | 1453 | { |
a165b420 | 1454 | const struct linux_prom64_registers *regs; |
1da177e4 LT |
1455 | struct pci_pbm_info *pbm; |
1456 | const char *chipset_name; | |
1da177e4 | 1457 | int is_pbm_a; |
1da177e4 LT |
1458 | |
1459 | switch (chip_type) { | |
1460 | case PBM_CHIP_TYPE_TOMATILLO: | |
1461 | chipset_name = "TOMATILLO"; | |
1462 | break; | |
1463 | ||
1464 | case PBM_CHIP_TYPE_SCHIZO_PLUS: | |
1465 | chipset_name = "SCHIZO+"; | |
1466 | break; | |
1467 | ||
1468 | case PBM_CHIP_TYPE_SCHIZO: | |
1469 | default: | |
1470 | chipset_name = "SCHIZO"; | |
1471 | break; | |
1472 | }; | |
1473 | ||
1474 | /* For SCHIZO, three OBP regs: | |
1475 | * 1) PBM controller regs | |
1476 | * 2) Schizo front-end controller regs (same for both PBMs) | |
1477 | * 3) PBM PCI config space | |
1478 | * | |
1479 | * For TOMATILLO, four OBP regs: | |
1480 | * 1) PBM controller regs | |
1481 | * 2) Tomatillo front-end controller regs | |
1482 | * 3) PBM PCI config space | |
1483 | * 4) Ichip regs | |
1484 | */ | |
bc606f3c | 1485 | regs = of_get_property(dp, "reg", NULL); |
1da177e4 | 1486 | |
e87dc350 | 1487 | is_pbm_a = ((regs[0].phys_addr & 0x00700000) == 0x00600000); |
1da177e4 LT |
1488 | if (is_pbm_a) |
1489 | pbm = &p->pbm_A; | |
1490 | else | |
1491 | pbm = &p->pbm_B; | |
1492 | ||
34768bc8 DM |
1493 | pbm->next = pci_pbm_root; |
1494 | pci_pbm_root = pbm; | |
1495 | ||
1496 | pbm->scan_bus = schizo_scan_bus; | |
f1cd8de2 | 1497 | pbm->pci_ops = &schizo_ops; |
34768bc8 | 1498 | |
6c108f12 DM |
1499 | pbm->index = pci_num_pbms++; |
1500 | ||
1da177e4 LT |
1501 | pbm->portid = portid; |
1502 | pbm->parent = p; | |
e87dc350 | 1503 | pbm->prom_node = dp; |
1da177e4 LT |
1504 | |
1505 | pbm->chip_type = chip_type; | |
bc606f3c DM |
1506 | pbm->chip_version = of_getintprop_default(dp, "version#", 0); |
1507 | pbm->chip_revision = of_getintprop_default(dp, "module-version#", 0); | |
e87dc350 DM |
1508 | |
1509 | pbm->pbm_regs = regs[0].phys_addr; | |
1510 | pbm->controller_regs = regs[1].phys_addr - 0x10000UL; | |
1da177e4 | 1511 | |
bb6743f4 | 1512 | if (chip_type == PBM_CHIP_TYPE_TOMATILLO) |
e87dc350 | 1513 | pbm->sync_reg = regs[3].phys_addr + 0x1a18UL; |
bb6743f4 | 1514 | |
e87dc350 | 1515 | pbm->name = dp->full_name; |
1da177e4 | 1516 | |
e87dc350 | 1517 | printk("%s: %s PCI Bus Module ver[%x:%x]\n", |
bc606f3c | 1518 | pbm->name, chipset_name, |
e87dc350 | 1519 | pbm->chip_version, pbm->chip_revision); |
1da177e4 LT |
1520 | |
1521 | schizo_pbm_hw_init(pbm); | |
1522 | ||
9fd8b647 | 1523 | pci_determine_mem_io_space(pbm); |
1da177e4 | 1524 | |
cfa0652c | 1525 | pci_get_pbm_props(pbm); |
1da177e4 LT |
1526 | |
1527 | schizo_pbm_iommu_init(pbm); | |
1528 | schizo_pbm_strbuf_init(pbm); | |
1529 | } | |
1530 | ||
1531 | static inline int portid_compare(u32 x, u32 y, int chip_type) | |
1532 | { | |
1533 | if (chip_type == PBM_CHIP_TYPE_TOMATILLO) { | |
1534 | if (x == (y ^ 1)) | |
1535 | return 1; | |
1536 | return 0; | |
1537 | } | |
1538 | return (x == y); | |
1539 | } | |
1540 | ||
e87dc350 | 1541 | static void __schizo_init(struct device_node *dp, char *model_name, int chip_type) |
1da177e4 LT |
1542 | { |
1543 | struct pci_controller_info *p; | |
34768bc8 | 1544 | struct pci_pbm_info *pbm; |
16ce82d8 | 1545 | struct iommu *iommu; |
1da177e4 LT |
1546 | u32 portid; |
1547 | ||
bc606f3c | 1548 | portid = of_getintprop_default(dp, "portid", 0xff); |
1da177e4 | 1549 | |
34768bc8 | 1550 | for (pbm = pci_pbm_root; pbm; pbm = pbm->next) { |
1da177e4 | 1551 | if (portid_compare(pbm->portid, portid, chip_type)) { |
34768bc8 | 1552 | schizo_pbm_init(pbm->parent, dp, portid, chip_type); |
1da177e4 LT |
1553 | return; |
1554 | } | |
1555 | } | |
1556 | ||
9132983a | 1557 | p = kzalloc(sizeof(struct pci_controller_info), GFP_ATOMIC); |
bc606f3c DM |
1558 | if (!p) |
1559 | goto memfail; | |
1da177e4 | 1560 | |
16ce82d8 | 1561 | iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC); |
bc606f3c DM |
1562 | if (!iommu) |
1563 | goto memfail; | |
1564 | ||
1da177e4 LT |
1565 | p->pbm_A.iommu = iommu; |
1566 | ||
16ce82d8 | 1567 | iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC); |
bc606f3c DM |
1568 | if (!iommu) |
1569 | goto memfail; | |
1570 | ||
1da177e4 LT |
1571 | p->pbm_B.iommu = iommu; |
1572 | ||
1da177e4 LT |
1573 | /* Like PSYCHO we have a 2GB aligned area for memory space. */ |
1574 | pci_memspace_mask = 0x7fffffffUL; | |
1575 | ||
e87dc350 | 1576 | schizo_pbm_init(p, dp, portid, chip_type); |
bc606f3c DM |
1577 | return; |
1578 | ||
1579 | memfail: | |
1580 | prom_printf("SCHIZO: Fatal memory allocation error.\n"); | |
1581 | prom_halt(); | |
1da177e4 LT |
1582 | } |
1583 | ||
e87dc350 | 1584 | void schizo_init(struct device_node *dp, char *model_name) |
1da177e4 | 1585 | { |
e87dc350 | 1586 | __schizo_init(dp, model_name, PBM_CHIP_TYPE_SCHIZO); |
1da177e4 LT |
1587 | } |
1588 | ||
e87dc350 | 1589 | void schizo_plus_init(struct device_node *dp, char *model_name) |
1da177e4 | 1590 | { |
e87dc350 | 1591 | __schizo_init(dp, model_name, PBM_CHIP_TYPE_SCHIZO_PLUS); |
1da177e4 LT |
1592 | } |
1593 | ||
e87dc350 | 1594 | void tomatillo_init(struct device_node *dp, char *model_name) |
1da177e4 | 1595 | { |
e87dc350 | 1596 | __schizo_init(dp, model_name, PBM_CHIP_TYPE_TOMATILLO); |
1da177e4 | 1597 | } |