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1da177e4 LT |
1 | /* $Id: pci_psycho.c,v 1.33 2002/02/01 00:58:33 davem Exp $ |
2 | * pci_psycho.c: PSYCHO/U2P specific PCI controller support. | |
3 | * | |
4 | * Copyright (C) 1997, 1998, 1999 David S. Miller (davem@caipfs.rutgers.edu) | |
5 | * Copyright (C) 1998, 1999 Eddie C. Dost (ecd@skynet.be) | |
6 | * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com) | |
7 | */ | |
8 | ||
9 | #include <linux/kernel.h> | |
10 | #include <linux/types.h> | |
11 | #include <linux/pci.h> | |
12 | #include <linux/init.h> | |
13 | #include <linux/slab.h> | |
14 | #include <linux/interrupt.h> | |
15 | ||
16 | #include <asm/pbm.h> | |
17 | #include <asm/iommu.h> | |
18 | #include <asm/irq.h> | |
19 | #include <asm/starfire.h> | |
20 | ||
21 | #include "pci_impl.h" | |
22 | #include "iommu_common.h" | |
23 | ||
24 | /* All PSYCHO 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 psycho_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 psycho_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 | /* Misc. PSYCHO PCI controller register offsets and definitions. */ | |
44 | #define PSYCHO_CONTROL 0x0010UL | |
45 | #define PSYCHO_CONTROL_IMPL 0xf000000000000000UL /* Implementation of this PSYCHO*/ | |
46 | #define PSYCHO_CONTROL_VER 0x0f00000000000000UL /* Version of this PSYCHO */ | |
47 | #define PSYCHO_CONTROL_MID 0x00f8000000000000UL /* UPA Module ID of PSYCHO */ | |
48 | #define PSYCHO_CONTROL_IGN 0x0007c00000000000UL /* Interrupt Group Number */ | |
49 | #define PSYCHO_CONTROL_RESV 0x00003ffffffffff0UL /* Reserved */ | |
50 | #define PSYCHO_CONTROL_APCKEN 0x0000000000000008UL /* Address Parity Check Enable */ | |
51 | #define PSYCHO_CONTROL_APERR 0x0000000000000004UL /* Incoming System Addr Parerr */ | |
52 | #define PSYCHO_CONTROL_IAP 0x0000000000000002UL /* Invert UPA Parity */ | |
53 | #define PSYCHO_CONTROL_MODE 0x0000000000000001UL /* PSYCHO clock mode */ | |
54 | #define PSYCHO_PCIA_CTRL 0x2000UL | |
55 | #define PSYCHO_PCIB_CTRL 0x4000UL | |
56 | #define PSYCHO_PCICTRL_RESV1 0xfffffff000000000UL /* Reserved */ | |
57 | #define PSYCHO_PCICTRL_SBH_ERR 0x0000000800000000UL /* Streaming byte hole error */ | |
58 | #define PSYCHO_PCICTRL_SERR 0x0000000400000000UL /* SERR signal asserted */ | |
59 | #define PSYCHO_PCICTRL_SPEED 0x0000000200000000UL /* PCI speed (1 is U2P clock) */ | |
60 | #define PSYCHO_PCICTRL_RESV2 0x00000001ffc00000UL /* Reserved */ | |
61 | #define PSYCHO_PCICTRL_ARB_PARK 0x0000000000200000UL /* PCI arbitration parking */ | |
62 | #define PSYCHO_PCICTRL_RESV3 0x00000000001ff800UL /* Reserved */ | |
63 | #define PSYCHO_PCICTRL_SBH_INT 0x0000000000000400UL /* Streaming byte hole int enab */ | |
64 | #define PSYCHO_PCICTRL_WEN 0x0000000000000200UL /* Power Mgmt Wake Enable */ | |
65 | #define PSYCHO_PCICTRL_EEN 0x0000000000000100UL /* PCI Error Interrupt Enable */ | |
66 | #define PSYCHO_PCICTRL_RESV4 0x00000000000000c0UL /* Reserved */ | |
67 | #define PSYCHO_PCICTRL_AEN 0x000000000000003fUL /* PCI DVMA Arbitration Enable */ | |
68 | ||
69 | /* U2P Programmer's Manual, page 13-55, configuration space | |
70 | * address format: | |
71 | * | |
72 | * 32 24 23 16 15 11 10 8 7 2 1 0 | |
73 | * --------------------------------------------------------- | |
74 | * |0 0 0 0 0 0 0 0 1| bus | device | function | reg | 0 0 | | |
75 | * --------------------------------------------------------- | |
76 | */ | |
77 | #define PSYCHO_CONFIG_BASE(PBM) \ | |
78 | ((PBM)->config_space | (1UL << 24)) | |
79 | #define PSYCHO_CONFIG_ENCODE(BUS, DEVFN, REG) \ | |
80 | (((unsigned long)(BUS) << 16) | \ | |
81 | ((unsigned long)(DEVFN) << 8) | \ | |
82 | ((unsigned long)(REG))) | |
83 | ||
84 | static void *psycho_pci_config_mkaddr(struct pci_pbm_info *pbm, | |
85 | unsigned char bus, | |
86 | unsigned int devfn, | |
87 | int where) | |
88 | { | |
89 | if (!pbm) | |
90 | return NULL; | |
91 | return (void *) | |
92 | (PSYCHO_CONFIG_BASE(pbm) | | |
93 | PSYCHO_CONFIG_ENCODE(bus, devfn, where)); | |
94 | } | |
95 | ||
96 | static int psycho_out_of_range(struct pci_pbm_info *pbm, | |
97 | unsigned char bus, | |
98 | unsigned char devfn) | |
99 | { | |
100 | return ((pbm->parent == 0) || | |
101 | ((pbm == &pbm->parent->pbm_B) && | |
102 | (bus == pbm->pci_first_busno) && | |
103 | PCI_SLOT(devfn) > 8) || | |
104 | ((pbm == &pbm->parent->pbm_A) && | |
105 | (bus == pbm->pci_first_busno) && | |
106 | PCI_SLOT(devfn) > 8)); | |
107 | } | |
108 | ||
109 | /* PSYCHO PCI configuration space accessors. */ | |
110 | ||
111 | static int psycho_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn, | |
112 | int where, int size, u32 *value) | |
113 | { | |
114 | struct pci_pbm_info *pbm = bus_dev->sysdata; | |
115 | unsigned char bus = bus_dev->number; | |
116 | u32 *addr; | |
117 | u16 tmp16; | |
118 | u8 tmp8; | |
119 | ||
120 | switch (size) { | |
121 | case 1: | |
122 | *value = 0xff; | |
123 | break; | |
124 | case 2: | |
125 | *value = 0xffff; | |
126 | break; | |
127 | case 4: | |
128 | *value = 0xffffffff; | |
129 | break; | |
130 | } | |
131 | ||
132 | addr = psycho_pci_config_mkaddr(pbm, bus, devfn, where); | |
133 | if (!addr) | |
134 | return PCIBIOS_SUCCESSFUL; | |
135 | ||
136 | if (psycho_out_of_range(pbm, bus, devfn)) | |
137 | return PCIBIOS_SUCCESSFUL; | |
138 | switch (size) { | |
139 | case 1: | |
140 | pci_config_read8((u8 *)addr, &tmp8); | |
141 | *value = (u32) tmp8; | |
142 | break; | |
143 | ||
144 | case 2: | |
145 | if (where & 0x01) { | |
146 | printk("pci_read_config_word: misaligned reg [%x]\n", | |
147 | where); | |
148 | return PCIBIOS_SUCCESSFUL; | |
149 | } | |
150 | pci_config_read16((u16 *)addr, &tmp16); | |
151 | *value = (u32) tmp16; | |
152 | break; | |
153 | ||
154 | case 4: | |
155 | if (where & 0x03) { | |
156 | printk("pci_read_config_dword: misaligned reg [%x]\n", | |
157 | where); | |
158 | return PCIBIOS_SUCCESSFUL; | |
159 | } | |
160 | pci_config_read32(addr, value); | |
161 | break; | |
162 | } | |
163 | return PCIBIOS_SUCCESSFUL; | |
164 | } | |
165 | ||
166 | static int psycho_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn, | |
167 | int where, int size, u32 value) | |
168 | { | |
169 | struct pci_pbm_info *pbm = bus_dev->sysdata; | |
170 | unsigned char bus = bus_dev->number; | |
171 | u32 *addr; | |
172 | ||
173 | addr = psycho_pci_config_mkaddr(pbm, bus, devfn, where); | |
174 | if (!addr) | |
175 | return PCIBIOS_SUCCESSFUL; | |
176 | ||
177 | if (psycho_out_of_range(pbm, bus, devfn)) | |
178 | return PCIBIOS_SUCCESSFUL; | |
179 | ||
180 | switch (size) { | |
181 | case 1: | |
182 | pci_config_write8((u8 *)addr, value); | |
183 | break; | |
184 | ||
185 | case 2: | |
186 | if (where & 0x01) { | |
187 | printk("pci_write_config_word: misaligned reg [%x]\n", | |
188 | where); | |
189 | return PCIBIOS_SUCCESSFUL; | |
190 | } | |
191 | pci_config_write16((u16 *)addr, value); | |
192 | break; | |
193 | ||
194 | case 4: | |
195 | if (where & 0x03) { | |
196 | printk("pci_write_config_dword: misaligned reg [%x]\n", | |
197 | where); | |
198 | return PCIBIOS_SUCCESSFUL; | |
199 | } | |
200 | pci_config_write32(addr, value); | |
201 | } | |
202 | return PCIBIOS_SUCCESSFUL; | |
203 | } | |
204 | ||
205 | static struct pci_ops psycho_ops = { | |
206 | .read = psycho_read_pci_cfg, | |
207 | .write = psycho_write_pci_cfg, | |
208 | }; | |
209 | ||
210 | /* PSYCHO interrupt mapping support. */ | |
211 | #define PSYCHO_IMAP_A_SLOT0 0x0c00UL | |
212 | #define PSYCHO_IMAP_B_SLOT0 0x0c20UL | |
213 | static unsigned long psycho_pcislot_imap_offset(unsigned long ino) | |
214 | { | |
215 | unsigned int bus = (ino & 0x10) >> 4; | |
216 | unsigned int slot = (ino & 0x0c) >> 2; | |
217 | ||
218 | if (bus == 0) | |
219 | return PSYCHO_IMAP_A_SLOT0 + (slot * 8); | |
220 | else | |
221 | return PSYCHO_IMAP_B_SLOT0 + (slot * 8); | |
222 | } | |
223 | ||
224 | #define PSYCHO_IMAP_SCSI 0x1000UL | |
225 | #define PSYCHO_IMAP_ETH 0x1008UL | |
226 | #define PSYCHO_IMAP_BPP 0x1010UL | |
227 | #define PSYCHO_IMAP_AU_REC 0x1018UL | |
228 | #define PSYCHO_IMAP_AU_PLAY 0x1020UL | |
229 | #define PSYCHO_IMAP_PFAIL 0x1028UL | |
230 | #define PSYCHO_IMAP_KMS 0x1030UL | |
231 | #define PSYCHO_IMAP_FLPY 0x1038UL | |
232 | #define PSYCHO_IMAP_SHW 0x1040UL | |
233 | #define PSYCHO_IMAP_KBD 0x1048UL | |
234 | #define PSYCHO_IMAP_MS 0x1050UL | |
235 | #define PSYCHO_IMAP_SER 0x1058UL | |
236 | #define PSYCHO_IMAP_TIM0 0x1060UL | |
237 | #define PSYCHO_IMAP_TIM1 0x1068UL | |
238 | #define PSYCHO_IMAP_UE 0x1070UL | |
239 | #define PSYCHO_IMAP_CE 0x1078UL | |
240 | #define PSYCHO_IMAP_A_ERR 0x1080UL | |
241 | #define PSYCHO_IMAP_B_ERR 0x1088UL | |
242 | #define PSYCHO_IMAP_PMGMT 0x1090UL | |
243 | #define PSYCHO_IMAP_GFX 0x1098UL | |
244 | #define PSYCHO_IMAP_EUPA 0x10a0UL | |
245 | ||
246 | static unsigned long __onboard_imap_off[] = { | |
247 | /*0x20*/ PSYCHO_IMAP_SCSI, | |
248 | /*0x21*/ PSYCHO_IMAP_ETH, | |
249 | /*0x22*/ PSYCHO_IMAP_BPP, | |
250 | /*0x23*/ PSYCHO_IMAP_AU_REC, | |
251 | /*0x24*/ PSYCHO_IMAP_AU_PLAY, | |
252 | /*0x25*/ PSYCHO_IMAP_PFAIL, | |
253 | /*0x26*/ PSYCHO_IMAP_KMS, | |
254 | /*0x27*/ PSYCHO_IMAP_FLPY, | |
255 | /*0x28*/ PSYCHO_IMAP_SHW, | |
256 | /*0x29*/ PSYCHO_IMAP_KBD, | |
257 | /*0x2a*/ PSYCHO_IMAP_MS, | |
258 | /*0x2b*/ PSYCHO_IMAP_SER, | |
259 | /*0x2c*/ PSYCHO_IMAP_TIM0, | |
260 | /*0x2d*/ PSYCHO_IMAP_TIM1, | |
261 | /*0x2e*/ PSYCHO_IMAP_UE, | |
262 | /*0x2f*/ PSYCHO_IMAP_CE, | |
263 | /*0x30*/ PSYCHO_IMAP_A_ERR, | |
264 | /*0x31*/ PSYCHO_IMAP_B_ERR, | |
265 | /*0x32*/ PSYCHO_IMAP_PMGMT | |
266 | }; | |
267 | #define PSYCHO_ONBOARD_IRQ_BASE 0x20 | |
268 | #define PSYCHO_ONBOARD_IRQ_LAST 0x32 | |
269 | #define psycho_onboard_imap_offset(__ino) \ | |
270 | __onboard_imap_off[(__ino) - PSYCHO_ONBOARD_IRQ_BASE] | |
271 | ||
272 | #define PSYCHO_ICLR_A_SLOT0 0x1400UL | |
273 | #define PSYCHO_ICLR_SCSI 0x1800UL | |
274 | ||
275 | #define psycho_iclr_offset(ino) \ | |
276 | ((ino & 0x20) ? (PSYCHO_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \ | |
277 | (PSYCHO_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3))) | |
278 | ||
279 | /* PCI PSYCHO INO number to Sparc PIL level. */ | |
280 | static unsigned char psycho_pil_table[] = { | |
281 | /*0x00*/0, 0, 0, 0, /* PCI A slot 0 Int A, B, C, D */ | |
282 | /*0x04*/0, 0, 0, 0, /* PCI A slot 1 Int A, B, C, D */ | |
283 | /*0x08*/0, 0, 0, 0, /* PCI A slot 2 Int A, B, C, D */ | |
284 | /*0x0c*/0, 0, 0, 0, /* PCI A slot 3 Int A, B, C, D */ | |
285 | /*0x10*/0, 0, 0, 0, /* PCI B slot 0 Int A, B, C, D */ | |
286 | /*0x14*/0, 0, 0, 0, /* PCI B slot 1 Int A, B, C, D */ | |
287 | /*0x18*/0, 0, 0, 0, /* PCI B slot 2 Int A, B, C, D */ | |
288 | /*0x1c*/0, 0, 0, 0, /* PCI B slot 3 Int A, B, C, D */ | |
289 | /*0x20*/4, /* SCSI */ | |
290 | /*0x21*/5, /* Ethernet */ | |
291 | /*0x22*/8, /* Parallel Port */ | |
292 | /*0x23*/13, /* Audio Record */ | |
293 | /*0x24*/14, /* Audio Playback */ | |
294 | /*0x25*/15, /* PowerFail */ | |
295 | /*0x26*/4, /* second SCSI */ | |
296 | /*0x27*/11, /* Floppy */ | |
297 | /*0x28*/4, /* Spare Hardware */ | |
298 | /*0x29*/9, /* Keyboard */ | |
299 | /*0x2a*/4, /* Mouse */ | |
300 | /*0x2b*/12, /* Serial */ | |
301 | /*0x2c*/10, /* Timer 0 */ | |
302 | /*0x2d*/11, /* Timer 1 */ | |
303 | /*0x2e*/15, /* Uncorrectable ECC */ | |
304 | /*0x2f*/15, /* Correctable ECC */ | |
305 | /*0x30*/15, /* PCI Bus A Error */ | |
306 | /*0x31*/15, /* PCI Bus B Error */ | |
307 | /*0x32*/15, /* Power Management */ | |
308 | }; | |
309 | ||
085ae41f | 310 | static int psycho_ino_to_pil(struct pci_dev *pdev, unsigned int ino) |
1da177e4 LT |
311 | { |
312 | int ret; | |
313 | ||
314 | ret = psycho_pil_table[ino]; | |
315 | if (ret == 0 && pdev == NULL) { | |
316 | ret = 4; | |
317 | } else if (ret == 0) { | |
318 | switch ((pdev->class >> 16) & 0xff) { | |
319 | case PCI_BASE_CLASS_STORAGE: | |
320 | ret = 4; | |
321 | break; | |
322 | ||
323 | case PCI_BASE_CLASS_NETWORK: | |
324 | ret = 6; | |
325 | break; | |
326 | ||
327 | case PCI_BASE_CLASS_DISPLAY: | |
328 | ret = 9; | |
329 | break; | |
330 | ||
331 | case PCI_BASE_CLASS_MULTIMEDIA: | |
332 | case PCI_BASE_CLASS_MEMORY: | |
333 | case PCI_BASE_CLASS_BRIDGE: | |
334 | case PCI_BASE_CLASS_SERIAL: | |
335 | ret = 10; | |
336 | break; | |
337 | ||
338 | default: | |
339 | ret = 4; | |
340 | break; | |
341 | }; | |
342 | } | |
343 | ||
344 | return ret; | |
345 | } | |
346 | ||
085ae41f DM |
347 | static unsigned int psycho_irq_build(struct pci_pbm_info *pbm, |
348 | struct pci_dev *pdev, | |
349 | unsigned int ino) | |
1da177e4 LT |
350 | { |
351 | struct ino_bucket *bucket; | |
352 | unsigned long imap, iclr; | |
353 | unsigned long imap_off, iclr_off; | |
354 | int pil, inofixup = 0; | |
355 | ||
356 | ino &= PCI_IRQ_INO; | |
357 | if (ino < PSYCHO_ONBOARD_IRQ_BASE) { | |
358 | /* PCI slot */ | |
359 | imap_off = psycho_pcislot_imap_offset(ino); | |
360 | } else { | |
361 | /* Onboard device */ | |
362 | if (ino > PSYCHO_ONBOARD_IRQ_LAST) { | |
363 | prom_printf("psycho_irq_build: Wacky INO [%x]\n", ino); | |
364 | prom_halt(); | |
365 | } | |
366 | imap_off = psycho_onboard_imap_offset(ino); | |
367 | } | |
368 | ||
369 | /* Now build the IRQ bucket. */ | |
370 | pil = psycho_ino_to_pil(pdev, ino); | |
371 | ||
372 | if (PIL_RESERVED(pil)) | |
373 | BUG(); | |
374 | ||
375 | imap = pbm->controller_regs + imap_off; | |
376 | imap += 4; | |
377 | ||
378 | iclr_off = psycho_iclr_offset(ino); | |
379 | iclr = pbm->controller_regs + iclr_off; | |
380 | iclr += 4; | |
381 | ||
382 | if ((ino & 0x20) == 0) | |
383 | inofixup = ino & 0x03; | |
384 | ||
385 | bucket = __bucket(build_irq(pil, inofixup, iclr, imap)); | |
386 | bucket->flags |= IBF_PCI; | |
387 | ||
388 | return __irq(bucket); | |
389 | } | |
390 | ||
391 | /* PSYCHO error handling support. */ | |
392 | enum psycho_error_type { | |
393 | UE_ERR, CE_ERR, PCI_ERR | |
394 | }; | |
395 | ||
396 | /* Helper function of IOMMU error checking, which checks out | |
397 | * the state of the streaming buffers. The IOMMU lock is | |
398 | * held when this is called. | |
399 | * | |
400 | * For the PCI error case we know which PBM (and thus which | |
401 | * streaming buffer) caused the error, but for the uncorrectable | |
402 | * error case we do not. So we always check both streaming caches. | |
403 | */ | |
404 | #define PSYCHO_STRBUF_CONTROL_A 0x2800UL | |
405 | #define PSYCHO_STRBUF_CONTROL_B 0x4800UL | |
406 | #define PSYCHO_STRBUF_CTRL_LPTR 0x00000000000000f0UL /* LRU Lock Pointer */ | |
407 | #define PSYCHO_STRBUF_CTRL_LENAB 0x0000000000000008UL /* LRU Lock Enable */ | |
408 | #define PSYCHO_STRBUF_CTRL_RRDIS 0x0000000000000004UL /* Rerun Disable */ | |
409 | #define PSYCHO_STRBUF_CTRL_DENAB 0x0000000000000002UL /* Diagnostic Mode Enable */ | |
410 | #define PSYCHO_STRBUF_CTRL_ENAB 0x0000000000000001UL /* Streaming Buffer Enable */ | |
411 | #define PSYCHO_STRBUF_FLUSH_A 0x2808UL | |
412 | #define PSYCHO_STRBUF_FLUSH_B 0x4808UL | |
413 | #define PSYCHO_STRBUF_FSYNC_A 0x2810UL | |
414 | #define PSYCHO_STRBUF_FSYNC_B 0x4810UL | |
415 | #define PSYCHO_STC_DATA_A 0xb000UL | |
416 | #define PSYCHO_STC_DATA_B 0xc000UL | |
417 | #define PSYCHO_STC_ERR_A 0xb400UL | |
418 | #define PSYCHO_STC_ERR_B 0xc400UL | |
419 | #define PSYCHO_STCERR_WRITE 0x0000000000000002UL /* Write Error */ | |
420 | #define PSYCHO_STCERR_READ 0x0000000000000001UL /* Read Error */ | |
421 | #define PSYCHO_STC_TAG_A 0xb800UL | |
422 | #define PSYCHO_STC_TAG_B 0xc800UL | |
423 | #define PSYCHO_STCTAG_PPN 0x0fffffff00000000UL /* Physical Page Number */ | |
424 | #define PSYCHO_STCTAG_VPN 0x00000000ffffe000UL /* Virtual Page Number */ | |
425 | #define PSYCHO_STCTAG_VALID 0x0000000000000002UL /* Valid */ | |
426 | #define PSYCHO_STCTAG_WRITE 0x0000000000000001UL /* Writable */ | |
427 | #define PSYCHO_STC_LINE_A 0xb900UL | |
428 | #define PSYCHO_STC_LINE_B 0xc900UL | |
429 | #define PSYCHO_STCLINE_LINDX 0x0000000001e00000UL /* LRU Index */ | |
430 | #define PSYCHO_STCLINE_SPTR 0x00000000001f8000UL /* Dirty Data Start Pointer */ | |
431 | #define PSYCHO_STCLINE_LADDR 0x0000000000007f00UL /* Line Address */ | |
432 | #define PSYCHO_STCLINE_EPTR 0x00000000000000fcUL /* Dirty Data End Pointer */ | |
433 | #define PSYCHO_STCLINE_VALID 0x0000000000000002UL /* Valid */ | |
434 | #define PSYCHO_STCLINE_FOFN 0x0000000000000001UL /* Fetch Outstanding / Flush Necessary */ | |
435 | ||
436 | static DEFINE_SPINLOCK(stc_buf_lock); | |
437 | static unsigned long stc_error_buf[128]; | |
438 | static unsigned long stc_tag_buf[16]; | |
439 | static unsigned long stc_line_buf[16]; | |
440 | ||
441 | static void __psycho_check_one_stc(struct pci_controller_info *p, | |
442 | struct pci_pbm_info *pbm, | |
443 | int is_pbm_a) | |
444 | { | |
445 | struct pci_strbuf *strbuf = &pbm->stc; | |
446 | unsigned long regbase = p->pbm_A.controller_regs; | |
447 | unsigned long err_base, tag_base, line_base; | |
448 | u64 control; | |
449 | int i; | |
450 | ||
451 | if (is_pbm_a) { | |
452 | err_base = regbase + PSYCHO_STC_ERR_A; | |
453 | tag_base = regbase + PSYCHO_STC_TAG_A; | |
454 | line_base = regbase + PSYCHO_STC_LINE_A; | |
455 | } else { | |
456 | err_base = regbase + PSYCHO_STC_ERR_B; | |
457 | tag_base = regbase + PSYCHO_STC_TAG_B; | |
458 | line_base = regbase + PSYCHO_STC_LINE_B; | |
459 | } | |
460 | ||
461 | spin_lock(&stc_buf_lock); | |
462 | ||
463 | /* This is __REALLY__ dangerous. When we put the | |
464 | * streaming buffer into diagnostic mode to probe | |
465 | * it's tags and error status, we _must_ clear all | |
466 | * of the line tag valid bits before re-enabling | |
467 | * the streaming buffer. If any dirty data lives | |
468 | * in the STC when we do this, we will end up | |
469 | * invalidating it before it has a chance to reach | |
470 | * main memory. | |
471 | */ | |
472 | control = psycho_read(strbuf->strbuf_control); | |
473 | psycho_write(strbuf->strbuf_control, | |
474 | (control | PSYCHO_STRBUF_CTRL_DENAB)); | |
475 | for (i = 0; i < 128; i++) { | |
476 | unsigned long val; | |
477 | ||
478 | val = psycho_read(err_base + (i * 8UL)); | |
479 | psycho_write(err_base + (i * 8UL), 0UL); | |
480 | stc_error_buf[i] = val; | |
481 | } | |
482 | for (i = 0; i < 16; i++) { | |
483 | stc_tag_buf[i] = psycho_read(tag_base + (i * 8UL)); | |
484 | stc_line_buf[i] = psycho_read(line_base + (i * 8UL)); | |
485 | psycho_write(tag_base + (i * 8UL), 0UL); | |
486 | psycho_write(line_base + (i * 8UL), 0UL); | |
487 | } | |
488 | ||
489 | /* OK, state is logged, exit diagnostic mode. */ | |
490 | psycho_write(strbuf->strbuf_control, control); | |
491 | ||
492 | for (i = 0; i < 16; i++) { | |
493 | int j, saw_error, first, last; | |
494 | ||
495 | saw_error = 0; | |
496 | first = i * 8; | |
497 | last = first + 8; | |
498 | for (j = first; j < last; j++) { | |
499 | unsigned long errval = stc_error_buf[j]; | |
500 | if (errval != 0) { | |
501 | saw_error++; | |
502 | printk("PSYCHO%d(PBM%c): STC_ERR(%d)[wr(%d)rd(%d)]\n", | |
503 | p->index, | |
504 | (is_pbm_a ? 'A' : 'B'), | |
505 | j, | |
506 | (errval & PSYCHO_STCERR_WRITE) ? 1 : 0, | |
507 | (errval & PSYCHO_STCERR_READ) ? 1 : 0); | |
508 | } | |
509 | } | |
510 | if (saw_error != 0) { | |
511 | unsigned long tagval = stc_tag_buf[i]; | |
512 | unsigned long lineval = stc_line_buf[i]; | |
513 | printk("PSYCHO%d(PBM%c): STC_TAG(%d)[PA(%016lx)VA(%08lx)V(%d)W(%d)]\n", | |
514 | p->index, | |
515 | (is_pbm_a ? 'A' : 'B'), | |
516 | i, | |
517 | ((tagval & PSYCHO_STCTAG_PPN) >> 19UL), | |
518 | (tagval & PSYCHO_STCTAG_VPN), | |
519 | ((tagval & PSYCHO_STCTAG_VALID) ? 1 : 0), | |
520 | ((tagval & PSYCHO_STCTAG_WRITE) ? 1 : 0)); | |
521 | printk("PSYCHO%d(PBM%c): STC_LINE(%d)[LIDX(%lx)SP(%lx)LADDR(%lx)EP(%lx)" | |
522 | "V(%d)FOFN(%d)]\n", | |
523 | p->index, | |
524 | (is_pbm_a ? 'A' : 'B'), | |
525 | i, | |
526 | ((lineval & PSYCHO_STCLINE_LINDX) >> 21UL), | |
527 | ((lineval & PSYCHO_STCLINE_SPTR) >> 15UL), | |
528 | ((lineval & PSYCHO_STCLINE_LADDR) >> 8UL), | |
529 | ((lineval & PSYCHO_STCLINE_EPTR) >> 2UL), | |
530 | ((lineval & PSYCHO_STCLINE_VALID) ? 1 : 0), | |
531 | ((lineval & PSYCHO_STCLINE_FOFN) ? 1 : 0)); | |
532 | } | |
533 | } | |
534 | ||
535 | spin_unlock(&stc_buf_lock); | |
536 | } | |
537 | ||
538 | static void __psycho_check_stc_error(struct pci_controller_info *p, | |
539 | unsigned long afsr, | |
540 | unsigned long afar, | |
541 | enum psycho_error_type type) | |
542 | { | |
543 | struct pci_pbm_info *pbm; | |
544 | ||
545 | pbm = &p->pbm_A; | |
546 | if (pbm->stc.strbuf_enabled) | |
547 | __psycho_check_one_stc(p, pbm, 1); | |
548 | ||
549 | pbm = &p->pbm_B; | |
550 | if (pbm->stc.strbuf_enabled) | |
551 | __psycho_check_one_stc(p, pbm, 0); | |
552 | } | |
553 | ||
554 | /* When an Uncorrectable Error or a PCI Error happens, we | |
555 | * interrogate the IOMMU state to see if it is the cause. | |
556 | */ | |
557 | #define PSYCHO_IOMMU_CONTROL 0x0200UL | |
558 | #define PSYCHO_IOMMU_CTRL_RESV 0xfffffffff9000000UL /* Reserved */ | |
559 | #define PSYCHO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL /* Translation Error Status */ | |
560 | #define PSYCHO_IOMMU_CTRL_XLTEERR 0x0000000001000000UL /* Translation Error encountered */ | |
561 | #define PSYCHO_IOMMU_CTRL_LCKEN 0x0000000000800000UL /* Enable translation locking */ | |
562 | #define PSYCHO_IOMMU_CTRL_LCKPTR 0x0000000000780000UL /* Translation lock pointer */ | |
563 | #define PSYCHO_IOMMU_CTRL_TSBSZ 0x0000000000070000UL /* TSB Size */ | |
564 | #define PSYCHO_IOMMU_TSBSZ_1K 0x0000000000000000UL /* TSB Table 1024 8-byte entries */ | |
565 | #define PSYCHO_IOMMU_TSBSZ_2K 0x0000000000010000UL /* TSB Table 2048 8-byte entries */ | |
566 | #define PSYCHO_IOMMU_TSBSZ_4K 0x0000000000020000UL /* TSB Table 4096 8-byte entries */ | |
567 | #define PSYCHO_IOMMU_TSBSZ_8K 0x0000000000030000UL /* TSB Table 8192 8-byte entries */ | |
568 | #define PSYCHO_IOMMU_TSBSZ_16K 0x0000000000040000UL /* TSB Table 16k 8-byte entries */ | |
569 | #define PSYCHO_IOMMU_TSBSZ_32K 0x0000000000050000UL /* TSB Table 32k 8-byte entries */ | |
570 | #define PSYCHO_IOMMU_TSBSZ_64K 0x0000000000060000UL /* TSB Table 64k 8-byte entries */ | |
571 | #define PSYCHO_IOMMU_TSBSZ_128K 0x0000000000070000UL /* TSB Table 128k 8-byte entries */ | |
572 | #define PSYCHO_IOMMU_CTRL_RESV2 0x000000000000fff8UL /* Reserved */ | |
573 | #define PSYCHO_IOMMU_CTRL_TBWSZ 0x0000000000000004UL /* Assumed page size, 0=8k 1=64k */ | |
574 | #define PSYCHO_IOMMU_CTRL_DENAB 0x0000000000000002UL /* Diagnostic mode enable */ | |
575 | #define PSYCHO_IOMMU_CTRL_ENAB 0x0000000000000001UL /* IOMMU Enable */ | |
576 | #define PSYCHO_IOMMU_TSBBASE 0x0208UL | |
577 | #define PSYCHO_IOMMU_FLUSH 0x0210UL | |
578 | #define PSYCHO_IOMMU_TAG 0xa580UL | |
579 | #define PSYCHO_IOMMU_TAG_ERRSTS (0x3UL << 23UL) | |
580 | #define PSYCHO_IOMMU_TAG_ERR (0x1UL << 22UL) | |
581 | #define PSYCHO_IOMMU_TAG_WRITE (0x1UL << 21UL) | |
582 | #define PSYCHO_IOMMU_TAG_STREAM (0x1UL << 20UL) | |
583 | #define PSYCHO_IOMMU_TAG_SIZE (0x1UL << 19UL) | |
584 | #define PSYCHO_IOMMU_TAG_VPAGE 0x7ffffUL | |
585 | #define PSYCHO_IOMMU_DATA 0xa600UL | |
586 | #define PSYCHO_IOMMU_DATA_VALID (1UL << 30UL) | |
587 | #define PSYCHO_IOMMU_DATA_CACHE (1UL << 28UL) | |
588 | #define PSYCHO_IOMMU_DATA_PPAGE 0xfffffffUL | |
589 | static void psycho_check_iommu_error(struct pci_controller_info *p, | |
590 | unsigned long afsr, | |
591 | unsigned long afar, | |
592 | enum psycho_error_type type) | |
593 | { | |
594 | struct pci_iommu *iommu = p->pbm_A.iommu; | |
595 | unsigned long iommu_tag[16]; | |
596 | unsigned long iommu_data[16]; | |
597 | unsigned long flags; | |
598 | u64 control; | |
599 | int i; | |
600 | ||
601 | spin_lock_irqsave(&iommu->lock, flags); | |
602 | control = psycho_read(iommu->iommu_control); | |
603 | if (control & PSYCHO_IOMMU_CTRL_XLTEERR) { | |
604 | char *type_string; | |
605 | ||
606 | /* Clear the error encountered bit. */ | |
607 | control &= ~PSYCHO_IOMMU_CTRL_XLTEERR; | |
608 | psycho_write(iommu->iommu_control, control); | |
609 | ||
610 | switch((control & PSYCHO_IOMMU_CTRL_XLTESTAT) >> 25UL) { | |
611 | case 0: | |
612 | type_string = "Protection Error"; | |
613 | break; | |
614 | case 1: | |
615 | type_string = "Invalid Error"; | |
616 | break; | |
617 | case 2: | |
618 | type_string = "TimeOut Error"; | |
619 | break; | |
620 | case 3: | |
621 | default: | |
622 | type_string = "ECC Error"; | |
623 | break; | |
624 | }; | |
625 | printk("PSYCHO%d: IOMMU Error, type[%s]\n", | |
626 | p->index, type_string); | |
627 | ||
628 | /* Put the IOMMU into diagnostic mode and probe | |
629 | * it's TLB for entries with error status. | |
630 | * | |
631 | * It is very possible for another DVMA to occur | |
632 | * while we do this probe, and corrupt the system | |
633 | * further. But we are so screwed at this point | |
634 | * that we are likely to crash hard anyways, so | |
635 | * get as much diagnostic information to the | |
636 | * console as we can. | |
637 | */ | |
638 | psycho_write(iommu->iommu_control, | |
639 | control | PSYCHO_IOMMU_CTRL_DENAB); | |
640 | for (i = 0; i < 16; i++) { | |
641 | unsigned long base = p->pbm_A.controller_regs; | |
642 | ||
643 | iommu_tag[i] = | |
644 | psycho_read(base + PSYCHO_IOMMU_TAG + (i * 8UL)); | |
645 | iommu_data[i] = | |
646 | psycho_read(base + PSYCHO_IOMMU_DATA + (i * 8UL)); | |
647 | ||
648 | /* Now clear out the entry. */ | |
649 | psycho_write(base + PSYCHO_IOMMU_TAG + (i * 8UL), 0); | |
650 | psycho_write(base + PSYCHO_IOMMU_DATA + (i * 8UL), 0); | |
651 | } | |
652 | ||
653 | /* Leave diagnostic mode. */ | |
654 | psycho_write(iommu->iommu_control, control); | |
655 | ||
656 | for (i = 0; i < 16; i++) { | |
657 | unsigned long tag, data; | |
658 | ||
659 | tag = iommu_tag[i]; | |
660 | if (!(tag & PSYCHO_IOMMU_TAG_ERR)) | |
661 | continue; | |
662 | ||
663 | data = iommu_data[i]; | |
664 | switch((tag & PSYCHO_IOMMU_TAG_ERRSTS) >> 23UL) { | |
665 | case 0: | |
666 | type_string = "Protection Error"; | |
667 | break; | |
668 | case 1: | |
669 | type_string = "Invalid Error"; | |
670 | break; | |
671 | case 2: | |
672 | type_string = "TimeOut Error"; | |
673 | break; | |
674 | case 3: | |
675 | default: | |
676 | type_string = "ECC Error"; | |
677 | break; | |
678 | }; | |
679 | printk("PSYCHO%d: IOMMU TAG(%d)[error(%s) wr(%d) str(%d) sz(%dK) vpg(%08lx)]\n", | |
680 | p->index, i, type_string, | |
681 | ((tag & PSYCHO_IOMMU_TAG_WRITE) ? 1 : 0), | |
682 | ((tag & PSYCHO_IOMMU_TAG_STREAM) ? 1 : 0), | |
683 | ((tag & PSYCHO_IOMMU_TAG_SIZE) ? 64 : 8), | |
684 | (tag & PSYCHO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT); | |
685 | printk("PSYCHO%d: IOMMU DATA(%d)[valid(%d) cache(%d) ppg(%016lx)]\n", | |
686 | p->index, i, | |
687 | ((data & PSYCHO_IOMMU_DATA_VALID) ? 1 : 0), | |
688 | ((data & PSYCHO_IOMMU_DATA_CACHE) ? 1 : 0), | |
689 | (data & PSYCHO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT); | |
690 | } | |
691 | } | |
692 | __psycho_check_stc_error(p, afsr, afar, type); | |
693 | spin_unlock_irqrestore(&iommu->lock, flags); | |
694 | } | |
695 | ||
696 | /* Uncorrectable Errors. Cause of the error and the address are | |
697 | * recorded in the UE_AFSR and UE_AFAR of PSYCHO. They are errors | |
698 | * relating to UPA interface transactions. | |
699 | */ | |
700 | #define PSYCHO_UE_AFSR 0x0030UL | |
701 | #define PSYCHO_UEAFSR_PPIO 0x8000000000000000UL /* Primary PIO is cause */ | |
702 | #define PSYCHO_UEAFSR_PDRD 0x4000000000000000UL /* Primary DVMA read is cause */ | |
703 | #define PSYCHO_UEAFSR_PDWR 0x2000000000000000UL /* Primary DVMA write is cause */ | |
704 | #define PSYCHO_UEAFSR_SPIO 0x1000000000000000UL /* Secondary PIO is cause */ | |
705 | #define PSYCHO_UEAFSR_SDRD 0x0800000000000000UL /* Secondary DVMA read is cause */ | |
706 | #define PSYCHO_UEAFSR_SDWR 0x0400000000000000UL /* Secondary DVMA write is cause*/ | |
707 | #define PSYCHO_UEAFSR_RESV1 0x03ff000000000000UL /* Reserved */ | |
708 | #define PSYCHO_UEAFSR_BMSK 0x0000ffff00000000UL /* Bytemask of failed transfer */ | |
709 | #define PSYCHO_UEAFSR_DOFF 0x00000000e0000000UL /* Doubleword Offset */ | |
710 | #define PSYCHO_UEAFSR_MID 0x000000001f000000UL /* UPA MID causing the fault */ | |
711 | #define PSYCHO_UEAFSR_BLK 0x0000000000800000UL /* Trans was block operation */ | |
712 | #define PSYCHO_UEAFSR_RESV2 0x00000000007fffffUL /* Reserved */ | |
713 | #define PSYCHO_UE_AFAR 0x0038UL | |
714 | ||
715 | static irqreturn_t psycho_ue_intr(int irq, void *dev_id, struct pt_regs *regs) | |
716 | { | |
717 | struct pci_controller_info *p = dev_id; | |
718 | unsigned long afsr_reg = p->pbm_A.controller_regs + PSYCHO_UE_AFSR; | |
719 | unsigned long afar_reg = p->pbm_A.controller_regs + PSYCHO_UE_AFAR; | |
720 | unsigned long afsr, afar, error_bits; | |
721 | int reported; | |
722 | ||
723 | /* Latch uncorrectable error status. */ | |
724 | afar = psycho_read(afar_reg); | |
725 | afsr = psycho_read(afsr_reg); | |
726 | ||
727 | /* Clear the primary/secondary error status bits. */ | |
728 | error_bits = afsr & | |
729 | (PSYCHO_UEAFSR_PPIO | PSYCHO_UEAFSR_PDRD | PSYCHO_UEAFSR_PDWR | | |
730 | PSYCHO_UEAFSR_SPIO | PSYCHO_UEAFSR_SDRD | PSYCHO_UEAFSR_SDWR); | |
731 | if (!error_bits) | |
732 | return IRQ_NONE; | |
733 | psycho_write(afsr_reg, error_bits); | |
734 | ||
735 | /* Log the error. */ | |
736 | printk("PSYCHO%d: Uncorrectable Error, primary error type[%s]\n", | |
737 | p->index, | |
738 | (((error_bits & PSYCHO_UEAFSR_PPIO) ? | |
739 | "PIO" : | |
740 | ((error_bits & PSYCHO_UEAFSR_PDRD) ? | |
741 | "DMA Read" : | |
742 | ((error_bits & PSYCHO_UEAFSR_PDWR) ? | |
743 | "DMA Write" : "???"))))); | |
744 | printk("PSYCHO%d: bytemask[%04lx] dword_offset[%lx] UPA_MID[%02lx] was_block(%d)\n", | |
745 | p->index, | |
746 | (afsr & PSYCHO_UEAFSR_BMSK) >> 32UL, | |
747 | (afsr & PSYCHO_UEAFSR_DOFF) >> 29UL, | |
748 | (afsr & PSYCHO_UEAFSR_MID) >> 24UL, | |
749 | ((afsr & PSYCHO_UEAFSR_BLK) ? 1 : 0)); | |
750 | printk("PSYCHO%d: UE AFAR [%016lx]\n", p->index, afar); | |
751 | printk("PSYCHO%d: UE Secondary errors [", p->index); | |
752 | reported = 0; | |
753 | if (afsr & PSYCHO_UEAFSR_SPIO) { | |
754 | reported++; | |
755 | printk("(PIO)"); | |
756 | } | |
757 | if (afsr & PSYCHO_UEAFSR_SDRD) { | |
758 | reported++; | |
759 | printk("(DMA Read)"); | |
760 | } | |
761 | if (afsr & PSYCHO_UEAFSR_SDWR) { | |
762 | reported++; | |
763 | printk("(DMA Write)"); | |
764 | } | |
765 | if (!reported) | |
766 | printk("(none)"); | |
767 | printk("]\n"); | |
768 | ||
769 | /* Interrogate IOMMU for error status. */ | |
770 | psycho_check_iommu_error(p, afsr, afar, UE_ERR); | |
771 | ||
772 | return IRQ_HANDLED; | |
773 | } | |
774 | ||
775 | /* Correctable Errors. */ | |
776 | #define PSYCHO_CE_AFSR 0x0040UL | |
777 | #define PSYCHO_CEAFSR_PPIO 0x8000000000000000UL /* Primary PIO is cause */ | |
778 | #define PSYCHO_CEAFSR_PDRD 0x4000000000000000UL /* Primary DVMA read is cause */ | |
779 | #define PSYCHO_CEAFSR_PDWR 0x2000000000000000UL /* Primary DVMA write is cause */ | |
780 | #define PSYCHO_CEAFSR_SPIO 0x1000000000000000UL /* Secondary PIO is cause */ | |
781 | #define PSYCHO_CEAFSR_SDRD 0x0800000000000000UL /* Secondary DVMA read is cause */ | |
782 | #define PSYCHO_CEAFSR_SDWR 0x0400000000000000UL /* Secondary DVMA write is cause*/ | |
783 | #define PSYCHO_CEAFSR_RESV1 0x0300000000000000UL /* Reserved */ | |
784 | #define PSYCHO_CEAFSR_ESYND 0x00ff000000000000UL /* Syndrome Bits */ | |
785 | #define PSYCHO_CEAFSR_BMSK 0x0000ffff00000000UL /* Bytemask of failed transfer */ | |
786 | #define PSYCHO_CEAFSR_DOFF 0x00000000e0000000UL /* Double Offset */ | |
787 | #define PSYCHO_CEAFSR_MID 0x000000001f000000UL /* UPA MID causing the fault */ | |
788 | #define PSYCHO_CEAFSR_BLK 0x0000000000800000UL /* Trans was block operation */ | |
789 | #define PSYCHO_CEAFSR_RESV2 0x00000000007fffffUL /* Reserved */ | |
790 | #define PSYCHO_CE_AFAR 0x0040UL | |
791 | ||
792 | static irqreturn_t psycho_ce_intr(int irq, void *dev_id, struct pt_regs *regs) | |
793 | { | |
794 | struct pci_controller_info *p = dev_id; | |
795 | unsigned long afsr_reg = p->pbm_A.controller_regs + PSYCHO_CE_AFSR; | |
796 | unsigned long afar_reg = p->pbm_A.controller_regs + PSYCHO_CE_AFAR; | |
797 | unsigned long afsr, afar, error_bits; | |
798 | int reported; | |
799 | ||
800 | /* Latch error status. */ | |
801 | afar = psycho_read(afar_reg); | |
802 | afsr = psycho_read(afsr_reg); | |
803 | ||
804 | /* Clear primary/secondary error status bits. */ | |
805 | error_bits = afsr & | |
806 | (PSYCHO_CEAFSR_PPIO | PSYCHO_CEAFSR_PDRD | PSYCHO_CEAFSR_PDWR | | |
807 | PSYCHO_CEAFSR_SPIO | PSYCHO_CEAFSR_SDRD | PSYCHO_CEAFSR_SDWR); | |
808 | if (!error_bits) | |
809 | return IRQ_NONE; | |
810 | psycho_write(afsr_reg, error_bits); | |
811 | ||
812 | /* Log the error. */ | |
813 | printk("PSYCHO%d: Correctable Error, primary error type[%s]\n", | |
814 | p->index, | |
815 | (((error_bits & PSYCHO_CEAFSR_PPIO) ? | |
816 | "PIO" : | |
817 | ((error_bits & PSYCHO_CEAFSR_PDRD) ? | |
818 | "DMA Read" : | |
819 | ((error_bits & PSYCHO_CEAFSR_PDWR) ? | |
820 | "DMA Write" : "???"))))); | |
821 | ||
822 | /* XXX Use syndrome and afar to print out module string just like | |
823 | * XXX UDB CE trap handler does... -DaveM | |
824 | */ | |
825 | printk("PSYCHO%d: syndrome[%02lx] bytemask[%04lx] dword_offset[%lx] " | |
826 | "UPA_MID[%02lx] was_block(%d)\n", | |
827 | p->index, | |
828 | (afsr & PSYCHO_CEAFSR_ESYND) >> 48UL, | |
829 | (afsr & PSYCHO_CEAFSR_BMSK) >> 32UL, | |
830 | (afsr & PSYCHO_CEAFSR_DOFF) >> 29UL, | |
831 | (afsr & PSYCHO_CEAFSR_MID) >> 24UL, | |
832 | ((afsr & PSYCHO_CEAFSR_BLK) ? 1 : 0)); | |
833 | printk("PSYCHO%d: CE AFAR [%016lx]\n", p->index, afar); | |
834 | printk("PSYCHO%d: CE Secondary errors [", p->index); | |
835 | reported = 0; | |
836 | if (afsr & PSYCHO_CEAFSR_SPIO) { | |
837 | reported++; | |
838 | printk("(PIO)"); | |
839 | } | |
840 | if (afsr & PSYCHO_CEAFSR_SDRD) { | |
841 | reported++; | |
842 | printk("(DMA Read)"); | |
843 | } | |
844 | if (afsr & PSYCHO_CEAFSR_SDWR) { | |
845 | reported++; | |
846 | printk("(DMA Write)"); | |
847 | } | |
848 | if (!reported) | |
849 | printk("(none)"); | |
850 | printk("]\n"); | |
851 | ||
852 | return IRQ_HANDLED; | |
853 | } | |
854 | ||
855 | /* PCI Errors. They are signalled by the PCI bus module since they | |
856 | * are associated with a specific bus segment. | |
857 | */ | |
858 | #define PSYCHO_PCI_AFSR_A 0x2010UL | |
859 | #define PSYCHO_PCI_AFSR_B 0x4010UL | |
860 | #define PSYCHO_PCIAFSR_PMA 0x8000000000000000UL /* Primary Master Abort Error */ | |
861 | #define PSYCHO_PCIAFSR_PTA 0x4000000000000000UL /* Primary Target Abort Error */ | |
862 | #define PSYCHO_PCIAFSR_PRTRY 0x2000000000000000UL /* Primary Excessive Retries */ | |
863 | #define PSYCHO_PCIAFSR_PPERR 0x1000000000000000UL /* Primary Parity Error */ | |
864 | #define PSYCHO_PCIAFSR_SMA 0x0800000000000000UL /* Secondary Master Abort Error */ | |
865 | #define PSYCHO_PCIAFSR_STA 0x0400000000000000UL /* Secondary Target Abort Error */ | |
866 | #define PSYCHO_PCIAFSR_SRTRY 0x0200000000000000UL /* Secondary Excessive Retries */ | |
867 | #define PSYCHO_PCIAFSR_SPERR 0x0100000000000000UL /* Secondary Parity Error */ | |
868 | #define PSYCHO_PCIAFSR_RESV1 0x00ff000000000000UL /* Reserved */ | |
869 | #define PSYCHO_PCIAFSR_BMSK 0x0000ffff00000000UL /* Bytemask of failed transfer */ | |
870 | #define PSYCHO_PCIAFSR_BLK 0x0000000080000000UL /* Trans was block operation */ | |
871 | #define PSYCHO_PCIAFSR_RESV2 0x0000000040000000UL /* Reserved */ | |
872 | #define PSYCHO_PCIAFSR_MID 0x000000003e000000UL /* MID causing the error */ | |
873 | #define PSYCHO_PCIAFSR_RESV3 0x0000000001ffffffUL /* Reserved */ | |
874 | #define PSYCHO_PCI_AFAR_A 0x2018UL | |
875 | #define PSYCHO_PCI_AFAR_B 0x4018UL | |
876 | ||
877 | static irqreturn_t psycho_pcierr_intr_other(struct pci_pbm_info *pbm, int is_pbm_a) | |
878 | { | |
879 | unsigned long csr_reg, csr, csr_error_bits; | |
880 | irqreturn_t ret = IRQ_NONE; | |
881 | u16 stat; | |
882 | ||
883 | if (is_pbm_a) { | |
884 | csr_reg = pbm->controller_regs + PSYCHO_PCIA_CTRL; | |
885 | } else { | |
886 | csr_reg = pbm->controller_regs + PSYCHO_PCIB_CTRL; | |
887 | } | |
888 | csr = psycho_read(csr_reg); | |
889 | csr_error_bits = | |
890 | csr & (PSYCHO_PCICTRL_SBH_ERR | PSYCHO_PCICTRL_SERR); | |
891 | if (csr_error_bits) { | |
892 | /* Clear the errors. */ | |
893 | psycho_write(csr_reg, csr); | |
894 | ||
895 | /* Log 'em. */ | |
896 | if (csr_error_bits & PSYCHO_PCICTRL_SBH_ERR) | |
897 | printk("%s: PCI streaming byte hole error asserted.\n", | |
898 | pbm->name); | |
899 | if (csr_error_bits & PSYCHO_PCICTRL_SERR) | |
900 | printk("%s: PCI SERR signal asserted.\n", pbm->name); | |
901 | ret = IRQ_HANDLED; | |
902 | } | |
903 | pci_read_config_word(pbm->pci_bus->self, PCI_STATUS, &stat); | |
904 | if (stat & (PCI_STATUS_PARITY | | |
905 | PCI_STATUS_SIG_TARGET_ABORT | | |
906 | PCI_STATUS_REC_TARGET_ABORT | | |
907 | PCI_STATUS_REC_MASTER_ABORT | | |
908 | PCI_STATUS_SIG_SYSTEM_ERROR)) { | |
909 | printk("%s: PCI bus error, PCI_STATUS[%04x]\n", | |
910 | pbm->name, stat); | |
911 | pci_write_config_word(pbm->pci_bus->self, PCI_STATUS, 0xffff); | |
912 | ret = IRQ_HANDLED; | |
913 | } | |
914 | return ret; | |
915 | } | |
916 | ||
917 | static irqreturn_t psycho_pcierr_intr(int irq, void *dev_id, struct pt_regs *regs) | |
918 | { | |
919 | struct pci_pbm_info *pbm = dev_id; | |
920 | struct pci_controller_info *p = pbm->parent; | |
921 | unsigned long afsr_reg, afar_reg; | |
922 | unsigned long afsr, afar, error_bits; | |
923 | int is_pbm_a, reported; | |
924 | ||
925 | is_pbm_a = (pbm == &pbm->parent->pbm_A); | |
926 | if (is_pbm_a) { | |
927 | afsr_reg = p->pbm_A.controller_regs + PSYCHO_PCI_AFSR_A; | |
928 | afar_reg = p->pbm_A.controller_regs + PSYCHO_PCI_AFAR_A; | |
929 | } else { | |
930 | afsr_reg = p->pbm_A.controller_regs + PSYCHO_PCI_AFSR_B; | |
931 | afar_reg = p->pbm_A.controller_regs + PSYCHO_PCI_AFAR_B; | |
932 | } | |
933 | ||
934 | /* Latch error status. */ | |
935 | afar = psycho_read(afar_reg); | |
936 | afsr = psycho_read(afsr_reg); | |
937 | ||
938 | /* Clear primary/secondary error status bits. */ | |
939 | error_bits = afsr & | |
940 | (PSYCHO_PCIAFSR_PMA | PSYCHO_PCIAFSR_PTA | | |
941 | PSYCHO_PCIAFSR_PRTRY | PSYCHO_PCIAFSR_PPERR | | |
942 | PSYCHO_PCIAFSR_SMA | PSYCHO_PCIAFSR_STA | | |
943 | PSYCHO_PCIAFSR_SRTRY | PSYCHO_PCIAFSR_SPERR); | |
944 | if (!error_bits) | |
945 | return psycho_pcierr_intr_other(pbm, is_pbm_a); | |
946 | psycho_write(afsr_reg, error_bits); | |
947 | ||
948 | /* Log the error. */ | |
949 | printk("PSYCHO%d(PBM%c): PCI Error, primary error type[%s]\n", | |
950 | p->index, (is_pbm_a ? 'A' : 'B'), | |
951 | (((error_bits & PSYCHO_PCIAFSR_PMA) ? | |
952 | "Master Abort" : | |
953 | ((error_bits & PSYCHO_PCIAFSR_PTA) ? | |
954 | "Target Abort" : | |
955 | ((error_bits & PSYCHO_PCIAFSR_PRTRY) ? | |
956 | "Excessive Retries" : | |
957 | ((error_bits & PSYCHO_PCIAFSR_PPERR) ? | |
958 | "Parity Error" : "???")))))); | |
959 | printk("PSYCHO%d(PBM%c): bytemask[%04lx] UPA_MID[%02lx] was_block(%d)\n", | |
960 | p->index, (is_pbm_a ? 'A' : 'B'), | |
961 | (afsr & PSYCHO_PCIAFSR_BMSK) >> 32UL, | |
962 | (afsr & PSYCHO_PCIAFSR_MID) >> 25UL, | |
963 | (afsr & PSYCHO_PCIAFSR_BLK) ? 1 : 0); | |
964 | printk("PSYCHO%d(PBM%c): PCI AFAR [%016lx]\n", | |
965 | p->index, (is_pbm_a ? 'A' : 'B'), afar); | |
966 | printk("PSYCHO%d(PBM%c): PCI Secondary errors [", | |
967 | p->index, (is_pbm_a ? 'A' : 'B')); | |
968 | reported = 0; | |
969 | if (afsr & PSYCHO_PCIAFSR_SMA) { | |
970 | reported++; | |
971 | printk("(Master Abort)"); | |
972 | } | |
973 | if (afsr & PSYCHO_PCIAFSR_STA) { | |
974 | reported++; | |
975 | printk("(Target Abort)"); | |
976 | } | |
977 | if (afsr & PSYCHO_PCIAFSR_SRTRY) { | |
978 | reported++; | |
979 | printk("(Excessive Retries)"); | |
980 | } | |
981 | if (afsr & PSYCHO_PCIAFSR_SPERR) { | |
982 | reported++; | |
983 | printk("(Parity Error)"); | |
984 | } | |
985 | if (!reported) | |
986 | printk("(none)"); | |
987 | printk("]\n"); | |
988 | ||
989 | /* For the error types shown, scan PBM's PCI bus for devices | |
990 | * which have logged that error type. | |
991 | */ | |
992 | ||
993 | /* If we see a Target Abort, this could be the result of an | |
994 | * IOMMU translation error of some sort. It is extremely | |
995 | * useful to log this information as usually it indicates | |
996 | * a bug in the IOMMU support code or a PCI device driver. | |
997 | */ | |
998 | if (error_bits & (PSYCHO_PCIAFSR_PTA | PSYCHO_PCIAFSR_STA)) { | |
999 | psycho_check_iommu_error(p, afsr, afar, PCI_ERR); | |
1000 | pci_scan_for_target_abort(p, pbm, pbm->pci_bus); | |
1001 | } | |
1002 | if (error_bits & (PSYCHO_PCIAFSR_PMA | PSYCHO_PCIAFSR_SMA)) | |
1003 | pci_scan_for_master_abort(p, pbm, pbm->pci_bus); | |
1004 | ||
1005 | /* For excessive retries, PSYCHO/PBM will abort the device | |
1006 | * and there is no way to specifically check for excessive | |
1007 | * retries in the config space status registers. So what | |
1008 | * we hope is that we'll catch it via the master/target | |
1009 | * abort events. | |
1010 | */ | |
1011 | ||
1012 | if (error_bits & (PSYCHO_PCIAFSR_PPERR | PSYCHO_PCIAFSR_SPERR)) | |
1013 | pci_scan_for_parity_error(p, pbm, pbm->pci_bus); | |
1014 | ||
1015 | return IRQ_HANDLED; | |
1016 | } | |
1017 | ||
1018 | /* XXX What about PowerFail/PowerManagement??? -DaveM */ | |
1019 | #define PSYCHO_ECC_CTRL 0x0020 | |
1020 | #define PSYCHO_ECCCTRL_EE 0x8000000000000000UL /* Enable ECC Checking */ | |
1021 | #define PSYCHO_ECCCTRL_UE 0x4000000000000000UL /* Enable UE Interrupts */ | |
1022 | #define PSYCHO_ECCCTRL_CE 0x2000000000000000UL /* Enable CE INterrupts */ | |
1023 | #define PSYCHO_UE_INO 0x2e | |
1024 | #define PSYCHO_CE_INO 0x2f | |
1025 | #define PSYCHO_PCIERR_A_INO 0x30 | |
1026 | #define PSYCHO_PCIERR_B_INO 0x31 | |
085ae41f | 1027 | static void psycho_register_error_handlers(struct pci_controller_info *p) |
1da177e4 LT |
1028 | { |
1029 | struct pci_pbm_info *pbm = &p->pbm_A; /* arbitrary */ | |
1030 | unsigned long base = p->pbm_A.controller_regs; | |
1031 | unsigned int irq, portid = pbm->portid; | |
1032 | u64 tmp; | |
1033 | ||
1034 | /* Build IRQs and register handlers. */ | |
1035 | irq = psycho_irq_build(pbm, NULL, (portid << 6) | PSYCHO_UE_INO); | |
1036 | if (request_irq(irq, psycho_ue_intr, | |
1037 | SA_SHIRQ, "PSYCHO UE", p) < 0) { | |
1038 | prom_printf("PSYCHO%d: Cannot register UE interrupt.\n", | |
1039 | p->index); | |
1040 | prom_halt(); | |
1041 | } | |
1042 | ||
1043 | irq = psycho_irq_build(pbm, NULL, (portid << 6) | PSYCHO_CE_INO); | |
1044 | if (request_irq(irq, psycho_ce_intr, | |
1045 | SA_SHIRQ, "PSYCHO CE", p) < 0) { | |
1046 | prom_printf("PSYCHO%d: Cannot register CE interrupt.\n", | |
1047 | p->index); | |
1048 | prom_halt(); | |
1049 | } | |
1050 | ||
1051 | pbm = &p->pbm_A; | |
1052 | irq = psycho_irq_build(pbm, NULL, (portid << 6) | PSYCHO_PCIERR_A_INO); | |
1053 | if (request_irq(irq, psycho_pcierr_intr, | |
1054 | SA_SHIRQ, "PSYCHO PCIERR", &p->pbm_A) < 0) { | |
1055 | prom_printf("PSYCHO%d(PBMA): Cannot register PciERR interrupt.\n", | |
1056 | p->index); | |
1057 | prom_halt(); | |
1058 | } | |
1059 | ||
1060 | pbm = &p->pbm_B; | |
1061 | irq = psycho_irq_build(pbm, NULL, (portid << 6) | PSYCHO_PCIERR_B_INO); | |
1062 | if (request_irq(irq, psycho_pcierr_intr, | |
1063 | SA_SHIRQ, "PSYCHO PCIERR", &p->pbm_B) < 0) { | |
1064 | prom_printf("PSYCHO%d(PBMB): Cannot register PciERR interrupt.\n", | |
1065 | p->index); | |
1066 | prom_halt(); | |
1067 | } | |
1068 | ||
1069 | /* Enable UE and CE interrupts for controller. */ | |
1070 | psycho_write(base + PSYCHO_ECC_CTRL, | |
1071 | (PSYCHO_ECCCTRL_EE | | |
1072 | PSYCHO_ECCCTRL_UE | | |
1073 | PSYCHO_ECCCTRL_CE)); | |
1074 | ||
1075 | /* Enable PCI Error interrupts and clear error | |
1076 | * bits for each PBM. | |
1077 | */ | |
1078 | tmp = psycho_read(base + PSYCHO_PCIA_CTRL); | |
1079 | tmp |= (PSYCHO_PCICTRL_SERR | | |
1080 | PSYCHO_PCICTRL_SBH_ERR | | |
1081 | PSYCHO_PCICTRL_EEN); | |
1082 | tmp &= ~(PSYCHO_PCICTRL_SBH_INT); | |
1083 | psycho_write(base + PSYCHO_PCIA_CTRL, tmp); | |
1084 | ||
1085 | tmp = psycho_read(base + PSYCHO_PCIB_CTRL); | |
1086 | tmp |= (PSYCHO_PCICTRL_SERR | | |
1087 | PSYCHO_PCICTRL_SBH_ERR | | |
1088 | PSYCHO_PCICTRL_EEN); | |
1089 | tmp &= ~(PSYCHO_PCICTRL_SBH_INT); | |
1090 | psycho_write(base + PSYCHO_PCIB_CTRL, tmp); | |
1091 | } | |
1092 | ||
1093 | /* PSYCHO boot time probing and initialization. */ | |
085ae41f DM |
1094 | static void psycho_resource_adjust(struct pci_dev *pdev, |
1095 | struct resource *res, | |
1096 | struct resource *root) | |
1da177e4 LT |
1097 | { |
1098 | res->start += root->start; | |
1099 | res->end += root->start; | |
1100 | } | |
1101 | ||
085ae41f | 1102 | static void psycho_base_address_update(struct pci_dev *pdev, int resource) |
1da177e4 LT |
1103 | { |
1104 | struct pcidev_cookie *pcp = pdev->sysdata; | |
1105 | struct pci_pbm_info *pbm = pcp->pbm; | |
1106 | struct resource *res, *root; | |
1107 | u32 reg; | |
1108 | int where, size, is_64bit; | |
1109 | ||
1110 | res = &pdev->resource[resource]; | |
1111 | if (resource < 6) { | |
1112 | where = PCI_BASE_ADDRESS_0 + (resource * 4); | |
1113 | } else if (resource == PCI_ROM_RESOURCE) { | |
1114 | where = pdev->rom_base_reg; | |
1115 | } else { | |
1116 | /* Somebody might have asked allocation of a non-standard resource */ | |
1117 | return; | |
1118 | } | |
1119 | ||
1120 | is_64bit = 0; | |
1121 | if (res->flags & IORESOURCE_IO) | |
1122 | root = &pbm->io_space; | |
1123 | else { | |
1124 | root = &pbm->mem_space; | |
1125 | if ((res->flags & PCI_BASE_ADDRESS_MEM_TYPE_MASK) | |
1126 | == PCI_BASE_ADDRESS_MEM_TYPE_64) | |
1127 | is_64bit = 1; | |
1128 | } | |
1129 | ||
1130 | size = res->end - res->start; | |
1131 | pci_read_config_dword(pdev, where, ®); | |
1132 | reg = ((reg & size) | | |
1133 | (((u32)(res->start - root->start)) & ~size)); | |
1134 | if (resource == PCI_ROM_RESOURCE) { | |
1135 | reg |= PCI_ROM_ADDRESS_ENABLE; | |
1136 | res->flags |= IORESOURCE_ROM_ENABLE; | |
1137 | } | |
1138 | pci_write_config_dword(pdev, where, reg); | |
1139 | ||
1140 | /* This knows that the upper 32-bits of the address | |
1141 | * must be zero. Our PCI common layer enforces this. | |
1142 | */ | |
1143 | if (is_64bit) | |
1144 | pci_write_config_dword(pdev, where + 4, 0); | |
1145 | } | |
1146 | ||
085ae41f | 1147 | static void pbm_config_busmastering(struct pci_pbm_info *pbm) |
1da177e4 LT |
1148 | { |
1149 | u8 *addr; | |
1150 | ||
1151 | /* Set cache-line size to 64 bytes, this is actually | |
1152 | * a nop but I do it for completeness. | |
1153 | */ | |
1154 | addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno, | |
1155 | 0, PCI_CACHE_LINE_SIZE); | |
1156 | pci_config_write8(addr, 64 / sizeof(u32)); | |
1157 | ||
1158 | /* Set PBM latency timer to 64 PCI clocks. */ | |
1159 | addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno, | |
1160 | 0, PCI_LATENCY_TIMER); | |
1161 | pci_config_write8(addr, 64); | |
1162 | } | |
1163 | ||
085ae41f DM |
1164 | static void pbm_scan_bus(struct pci_controller_info *p, |
1165 | struct pci_pbm_info *pbm) | |
1da177e4 LT |
1166 | { |
1167 | struct pcidev_cookie *cookie = kmalloc(sizeof(*cookie), GFP_KERNEL); | |
1168 | ||
1169 | if (!cookie) { | |
1170 | prom_printf("PSYCHO: Critical allocation failure.\n"); | |
1171 | prom_halt(); | |
1172 | } | |
1173 | ||
1174 | /* All we care about is the PBM. */ | |
1175 | memset(cookie, 0, sizeof(*cookie)); | |
1176 | cookie->pbm = pbm; | |
1177 | ||
1178 | pbm->pci_bus = pci_scan_bus(pbm->pci_first_busno, | |
1179 | p->pci_ops, | |
1180 | pbm); | |
1181 | pci_fixup_host_bridge_self(pbm->pci_bus); | |
1182 | pbm->pci_bus->self->sysdata = cookie; | |
1183 | ||
1184 | pci_fill_in_pbm_cookies(pbm->pci_bus, pbm, pbm->prom_node); | |
1185 | pci_record_assignments(pbm, pbm->pci_bus); | |
1186 | pci_assign_unassigned(pbm, pbm->pci_bus); | |
1187 | pci_fixup_irq(pbm, pbm->pci_bus); | |
1188 | pci_determine_66mhz_disposition(pbm, pbm->pci_bus); | |
1189 | pci_setup_busmastering(pbm, pbm->pci_bus); | |
1190 | } | |
1191 | ||
085ae41f | 1192 | static void psycho_scan_bus(struct pci_controller_info *p) |
1da177e4 LT |
1193 | { |
1194 | pbm_config_busmastering(&p->pbm_B); | |
1195 | p->pbm_B.is_66mhz_capable = 0; | |
1196 | pbm_config_busmastering(&p->pbm_A); | |
1197 | p->pbm_A.is_66mhz_capable = 1; | |
1198 | pbm_scan_bus(p, &p->pbm_B); | |
1199 | pbm_scan_bus(p, &p->pbm_A); | |
1200 | ||
1201 | /* After the PCI bus scan is complete, we can register | |
1202 | * the error interrupt handlers. | |
1203 | */ | |
1204 | psycho_register_error_handlers(p); | |
1205 | } | |
1206 | ||
085ae41f | 1207 | static void psycho_iommu_init(struct pci_controller_info *p) |
1da177e4 LT |
1208 | { |
1209 | struct pci_iommu *iommu = p->pbm_A.iommu; | |
51e85136 | 1210 | unsigned long i; |
1da177e4 LT |
1211 | u64 control; |
1212 | ||
1da177e4 LT |
1213 | /* Register addresses. */ |
1214 | iommu->iommu_control = p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL; | |
1215 | iommu->iommu_tsbbase = p->pbm_A.controller_regs + PSYCHO_IOMMU_TSBBASE; | |
1216 | iommu->iommu_flush = p->pbm_A.controller_regs + PSYCHO_IOMMU_FLUSH; | |
1217 | /* PSYCHO's IOMMU lacks ctx flushing. */ | |
1218 | iommu->iommu_ctxflush = 0; | |
1219 | ||
1220 | /* We use the main control register of PSYCHO as the write | |
1221 | * completion register. | |
1222 | */ | |
1223 | iommu->write_complete_reg = p->pbm_A.controller_regs + PSYCHO_CONTROL; | |
1224 | ||
1225 | /* | |
1226 | * Invalidate TLB Entries. | |
1227 | */ | |
1228 | control = psycho_read(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL); | |
1229 | control |= PSYCHO_IOMMU_CTRL_DENAB; | |
1230 | psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL, control); | |
1231 | for(i = 0; i < 16; i++) { | |
1232 | psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_TAG + (i * 8UL), 0); | |
1233 | psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_DATA + (i * 8UL), 0); | |
1234 | } | |
1235 | ||
1236 | /* Leave diag mode enabled for full-flushing done | |
1237 | * in pci_iommu.c | |
1238 | */ | |
51e85136 | 1239 | pci_iommu_table_init(iommu, IO_TSB_SIZE, 0xc0000000, 0xffffffff); |
1da177e4 | 1240 | |
51e85136 DM |
1241 | psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_TSBBASE, |
1242 | __pa(iommu->page_table)); | |
1da177e4 LT |
1243 | |
1244 | control = psycho_read(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL); | |
1245 | control &= ~(PSYCHO_IOMMU_CTRL_TSBSZ | PSYCHO_IOMMU_CTRL_TBWSZ); | |
1246 | control |= (PSYCHO_IOMMU_TSBSZ_128K | PSYCHO_IOMMU_CTRL_ENAB); | |
1247 | psycho_write(p->pbm_A.controller_regs + PSYCHO_IOMMU_CONTROL, control); | |
1248 | ||
1249 | /* If necessary, hook us up for starfire IRQ translations. */ | |
51e85136 | 1250 | if (this_is_starfire) |
1da177e4 LT |
1251 | p->starfire_cookie = starfire_hookup(p->pbm_A.portid); |
1252 | else | |
1253 | p->starfire_cookie = NULL; | |
1254 | } | |
1255 | ||
1256 | #define PSYCHO_IRQ_RETRY 0x1a00UL | |
1257 | #define PSYCHO_PCIA_DIAG 0x2020UL | |
1258 | #define PSYCHO_PCIB_DIAG 0x4020UL | |
1259 | #define PSYCHO_PCIDIAG_RESV 0xffffffffffffff80UL /* Reserved */ | |
1260 | #define PSYCHO_PCIDIAG_DRETRY 0x0000000000000040UL /* Disable retry limit */ | |
1261 | #define PSYCHO_PCIDIAG_DISYNC 0x0000000000000020UL /* Disable DMA wr / irq sync */ | |
1262 | #define PSYCHO_PCIDIAG_DDWSYNC 0x0000000000000010UL /* Disable DMA wr / PIO rd sync */ | |
1263 | #define PSYCHO_PCIDIAG_IDDPAR 0x0000000000000008UL /* Invert DMA data parity */ | |
1264 | #define PSYCHO_PCIDIAG_IPDPAR 0x0000000000000004UL /* Invert PIO data parity */ | |
1265 | #define PSYCHO_PCIDIAG_IPAPAR 0x0000000000000002UL /* Invert PIO address parity */ | |
1266 | #define PSYCHO_PCIDIAG_LPBACK 0x0000000000000001UL /* Enable loopback mode */ | |
1267 | ||
1268 | static void psycho_controller_hwinit(struct pci_controller_info *p) | |
1269 | { | |
1270 | u64 tmp; | |
1271 | ||
864ae180 | 1272 | psycho_write(p->pbm_A.controller_regs + PSYCHO_IRQ_RETRY, 5); |
1da177e4 LT |
1273 | |
1274 | /* Enable arbiter for all PCI slots. */ | |
1275 | tmp = psycho_read(p->pbm_A.controller_regs + PSYCHO_PCIA_CTRL); | |
1276 | tmp |= PSYCHO_PCICTRL_AEN; | |
1277 | psycho_write(p->pbm_A.controller_regs + PSYCHO_PCIA_CTRL, tmp); | |
1278 | ||
1279 | tmp = psycho_read(p->pbm_A.controller_regs + PSYCHO_PCIB_CTRL); | |
1280 | tmp |= PSYCHO_PCICTRL_AEN; | |
1281 | psycho_write(p->pbm_A.controller_regs + PSYCHO_PCIB_CTRL, tmp); | |
1282 | ||
1283 | /* Disable DMA write / PIO read synchronization on | |
1284 | * both PCI bus segments. | |
1285 | * [ U2P Erratum 1243770, STP2223BGA data sheet ] | |
1286 | */ | |
1287 | tmp = psycho_read(p->pbm_A.controller_regs + PSYCHO_PCIA_DIAG); | |
1288 | tmp |= PSYCHO_PCIDIAG_DDWSYNC; | |
1289 | psycho_write(p->pbm_A.controller_regs + PSYCHO_PCIA_DIAG, tmp); | |
1290 | ||
1291 | tmp = psycho_read(p->pbm_A.controller_regs + PSYCHO_PCIB_DIAG); | |
1292 | tmp |= PSYCHO_PCIDIAG_DDWSYNC; | |
1293 | psycho_write(p->pbm_A.controller_regs + PSYCHO_PCIB_DIAG, tmp); | |
1294 | } | |
1295 | ||
085ae41f DM |
1296 | static void pbm_register_toplevel_resources(struct pci_controller_info *p, |
1297 | struct pci_pbm_info *pbm) | |
1da177e4 LT |
1298 | { |
1299 | char *name = pbm->name; | |
1300 | ||
1301 | sprintf(name, "PSYCHO%d PBM%c", | |
1302 | p->index, | |
1303 | (pbm == &p->pbm_A ? 'A' : 'B')); | |
1304 | pbm->io_space.name = pbm->mem_space.name = name; | |
1305 | ||
1306 | request_resource(&ioport_resource, &pbm->io_space); | |
1307 | request_resource(&iomem_resource, &pbm->mem_space); | |
1308 | pci_register_legacy_regions(&pbm->io_space, | |
1309 | &pbm->mem_space); | |
1310 | } | |
1311 | ||
1312 | static void psycho_pbm_strbuf_init(struct pci_controller_info *p, | |
1313 | struct pci_pbm_info *pbm, | |
1314 | int is_pbm_a) | |
1315 | { | |
1316 | unsigned long base = pbm->controller_regs; | |
1317 | u64 control; | |
1318 | ||
1319 | if (is_pbm_a) { | |
1320 | pbm->stc.strbuf_control = base + PSYCHO_STRBUF_CONTROL_A; | |
1321 | pbm->stc.strbuf_pflush = base + PSYCHO_STRBUF_FLUSH_A; | |
1322 | pbm->stc.strbuf_fsync = base + PSYCHO_STRBUF_FSYNC_A; | |
1323 | } else { | |
1324 | pbm->stc.strbuf_control = base + PSYCHO_STRBUF_CONTROL_B; | |
1325 | pbm->stc.strbuf_pflush = base + PSYCHO_STRBUF_FLUSH_B; | |
1326 | pbm->stc.strbuf_fsync = base + PSYCHO_STRBUF_FSYNC_B; | |
1327 | } | |
1328 | /* PSYCHO's streaming buffer lacks ctx flushing. */ | |
1329 | pbm->stc.strbuf_ctxflush = 0; | |
1330 | pbm->stc.strbuf_ctxmatch_base = 0; | |
1331 | ||
1332 | pbm->stc.strbuf_flushflag = (volatile unsigned long *) | |
1333 | ((((unsigned long)&pbm->stc.__flushflag_buf[0]) | |
1334 | + 63UL) | |
1335 | & ~63UL); | |
1336 | pbm->stc.strbuf_flushflag_pa = (unsigned long) | |
1337 | __pa(pbm->stc.strbuf_flushflag); | |
1338 | ||
1339 | /* Enable the streaming buffer. We have to be careful | |
1340 | * just in case OBP left it with LRU locking enabled. | |
1341 | * | |
1342 | * It is possible to control if PBM will be rerun on | |
1343 | * line misses. Currently I just retain whatever setting | |
1344 | * OBP left us with. All checks so far show it having | |
1345 | * a value of zero. | |
1346 | */ | |
1347 | #undef PSYCHO_STRBUF_RERUN_ENABLE | |
1348 | #undef PSYCHO_STRBUF_RERUN_DISABLE | |
1349 | control = psycho_read(pbm->stc.strbuf_control); | |
1350 | control |= PSYCHO_STRBUF_CTRL_ENAB; | |
1351 | control &= ~(PSYCHO_STRBUF_CTRL_LENAB | PSYCHO_STRBUF_CTRL_LPTR); | |
1352 | #ifdef PSYCHO_STRBUF_RERUN_ENABLE | |
1353 | control &= ~(PSYCHO_STRBUF_CTRL_RRDIS); | |
1354 | #else | |
1355 | #ifdef PSYCHO_STRBUF_RERUN_DISABLE | |
1356 | control |= PSYCHO_STRBUF_CTRL_RRDIS; | |
1357 | #endif | |
1358 | #endif | |
1359 | psycho_write(pbm->stc.strbuf_control, control); | |
1360 | ||
1361 | pbm->stc.strbuf_enabled = 1; | |
1362 | } | |
1363 | ||
1364 | #define PSYCHO_IOSPACE_A 0x002000000UL | |
1365 | #define PSYCHO_IOSPACE_B 0x002010000UL | |
1366 | #define PSYCHO_IOSPACE_SIZE 0x00000ffffUL | |
1367 | #define PSYCHO_MEMSPACE_A 0x100000000UL | |
1368 | #define PSYCHO_MEMSPACE_B 0x180000000UL | |
1369 | #define PSYCHO_MEMSPACE_SIZE 0x07fffffffUL | |
1370 | ||
1371 | static void psycho_pbm_init(struct pci_controller_info *p, | |
1372 | int prom_node, int is_pbm_a) | |
1373 | { | |
1374 | unsigned int busrange[2]; | |
1375 | struct pci_pbm_info *pbm; | |
1376 | int err; | |
1377 | ||
1378 | if (is_pbm_a) { | |
1379 | pbm = &p->pbm_A; | |
1380 | pbm->pci_first_slot = 1; | |
1381 | pbm->io_space.start = pbm->controller_regs + PSYCHO_IOSPACE_A; | |
1382 | pbm->mem_space.start = pbm->controller_regs + PSYCHO_MEMSPACE_A; | |
1383 | } else { | |
1384 | pbm = &p->pbm_B; | |
1385 | pbm->pci_first_slot = 2; | |
1386 | pbm->io_space.start = pbm->controller_regs + PSYCHO_IOSPACE_B; | |
1387 | pbm->mem_space.start = pbm->controller_regs + PSYCHO_MEMSPACE_B; | |
1388 | } | |
1389 | ||
1390 | pbm->chip_type = PBM_CHIP_TYPE_PSYCHO; | |
1391 | pbm->chip_version = | |
1392 | prom_getintdefault(prom_node, "version#", 0); | |
1393 | pbm->chip_revision = | |
1394 | prom_getintdefault(prom_node, "module-revision#", 0); | |
1395 | ||
1396 | pbm->io_space.end = pbm->io_space.start + PSYCHO_IOSPACE_SIZE; | |
1397 | pbm->io_space.flags = IORESOURCE_IO; | |
1398 | pbm->mem_space.end = pbm->mem_space.start + PSYCHO_MEMSPACE_SIZE; | |
1399 | pbm->mem_space.flags = IORESOURCE_MEM; | |
1400 | pbm_register_toplevel_resources(p, pbm); | |
1401 | ||
1402 | pbm->parent = p; | |
1403 | pbm->prom_node = prom_node; | |
1404 | prom_getstring(prom_node, "name", | |
1405 | pbm->prom_name, | |
1406 | sizeof(pbm->prom_name)); | |
1407 | ||
1408 | err = prom_getproperty(prom_node, "ranges", | |
1409 | (char *)pbm->pbm_ranges, | |
1410 | sizeof(pbm->pbm_ranges)); | |
1411 | if (err != -1) | |
1412 | pbm->num_pbm_ranges = | |
1413 | (err / sizeof(struct linux_prom_pci_ranges)); | |
1414 | else | |
1415 | pbm->num_pbm_ranges = 0; | |
1416 | ||
1417 | err = prom_getproperty(prom_node, "interrupt-map", | |
1418 | (char *)pbm->pbm_intmap, | |
1419 | sizeof(pbm->pbm_intmap)); | |
1420 | if (err != -1) { | |
1421 | pbm->num_pbm_intmap = (err / sizeof(struct linux_prom_pci_intmap)); | |
1422 | err = prom_getproperty(prom_node, "interrupt-map-mask", | |
1423 | (char *)&pbm->pbm_intmask, | |
1424 | sizeof(pbm->pbm_intmask)); | |
1425 | if (err == -1) { | |
1426 | prom_printf("PSYCHO-PBM: Fatal error, no " | |
1427 | "interrupt-map-mask.\n"); | |
1428 | prom_halt(); | |
1429 | } | |
1430 | } else { | |
1431 | pbm->num_pbm_intmap = 0; | |
1432 | memset(&pbm->pbm_intmask, 0, sizeof(pbm->pbm_intmask)); | |
1433 | } | |
1434 | ||
1435 | err = prom_getproperty(prom_node, "bus-range", | |
1436 | (char *)&busrange[0], | |
1437 | sizeof(busrange)); | |
1438 | if (err == 0 || err == -1) { | |
1439 | prom_printf("PSYCHO-PBM: Fatal error, no bus-range.\n"); | |
1440 | prom_halt(); | |
1441 | } | |
1442 | pbm->pci_first_busno = busrange[0]; | |
1443 | pbm->pci_last_busno = busrange[1]; | |
1444 | ||
1445 | psycho_pbm_strbuf_init(p, pbm, is_pbm_a); | |
1446 | } | |
1447 | ||
1448 | #define PSYCHO_CONFIGSPACE 0x001000000UL | |
1449 | ||
085ae41f | 1450 | void psycho_init(int node, char *model_name) |
1da177e4 LT |
1451 | { |
1452 | struct linux_prom64_registers pr_regs[3]; | |
1453 | struct pci_controller_info *p; | |
1454 | struct pci_iommu *iommu; | |
1455 | u32 upa_portid; | |
1456 | int is_pbm_a, err; | |
1457 | ||
1458 | upa_portid = prom_getintdefault(node, "upa-portid", 0xff); | |
1459 | ||
1460 | for(p = pci_controller_root; p; p = p->next) { | |
1461 | if (p->pbm_A.portid == upa_portid) { | |
1462 | is_pbm_a = (p->pbm_A.prom_node == 0); | |
1463 | psycho_pbm_init(p, node, is_pbm_a); | |
1464 | return; | |
1465 | } | |
1466 | } | |
1467 | ||
1468 | p = kmalloc(sizeof(struct pci_controller_info), GFP_ATOMIC); | |
1469 | if (!p) { | |
1470 | prom_printf("PSYCHO: Fatal memory allocation error.\n"); | |
1471 | prom_halt(); | |
1472 | } | |
1473 | memset(p, 0, sizeof(*p)); | |
1474 | iommu = kmalloc(sizeof(struct pci_iommu), GFP_ATOMIC); | |
1475 | if (!iommu) { | |
1476 | prom_printf("PSYCHO: Fatal memory allocation error.\n"); | |
1477 | prom_halt(); | |
1478 | } | |
1479 | memset(iommu, 0, sizeof(*iommu)); | |
1480 | p->pbm_A.iommu = p->pbm_B.iommu = iommu; | |
1481 | ||
1482 | p->next = pci_controller_root; | |
1483 | pci_controller_root = p; | |
1484 | ||
1485 | p->pbm_A.portid = upa_portid; | |
1486 | p->pbm_B.portid = upa_portid; | |
1487 | p->index = pci_num_controllers++; | |
1488 | p->pbms_same_domain = 0; | |
1489 | p->scan_bus = psycho_scan_bus; | |
1490 | p->irq_build = psycho_irq_build; | |
1491 | p->base_address_update = psycho_base_address_update; | |
1492 | p->resource_adjust = psycho_resource_adjust; | |
1493 | p->pci_ops = &psycho_ops; | |
1494 | ||
1495 | err = prom_getproperty(node, "reg", | |
1496 | (char *)&pr_regs[0], | |
1497 | sizeof(pr_regs)); | |
1498 | if (err == 0 || err == -1) { | |
1499 | prom_printf("PSYCHO: Fatal error, no reg property.\n"); | |
1500 | prom_halt(); | |
1501 | } | |
1502 | ||
1503 | p->pbm_A.controller_regs = pr_regs[2].phys_addr; | |
1504 | p->pbm_B.controller_regs = pr_regs[2].phys_addr; | |
1505 | printk("PCI: Found PSYCHO, control regs at %016lx\n", | |
1506 | p->pbm_A.controller_regs); | |
1507 | ||
1508 | p->pbm_A.config_space = p->pbm_B.config_space = | |
1509 | (pr_regs[2].phys_addr + PSYCHO_CONFIGSPACE); | |
1510 | printk("PSYCHO: Shared PCI config space at %016lx\n", | |
1511 | p->pbm_A.config_space); | |
1512 | ||
1513 | /* | |
1514 | * Psycho's PCI MEM space is mapped to a 2GB aligned area, so | |
1515 | * we need to adjust our MEM space mask. | |
1516 | */ | |
1517 | pci_memspace_mask = 0x7fffffffUL; | |
1518 | ||
1519 | psycho_controller_hwinit(p); | |
1520 | ||
1521 | psycho_iommu_init(p); | |
1522 | ||
1523 | is_pbm_a = ((pr_regs[0].phys_addr & 0x6000) == 0x2000); | |
1524 | psycho_pbm_init(p, node, is_pbm_a); | |
1525 | } |