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addrs.h
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1 /*
2  * This file is subject to the terms and conditions of the GNU General Public
3  * License. See the file "COPYING" in the main directory of this archive
4  * for more details.
5  *
6  * Copyright (C) 1992 - 1997, 1999, 2000 Silicon Graphics, Inc.
7  * Copyright (C) 1999, 2000 by Ralf Baechle
8  */
9 #ifndef _ASM_SN_ADDRS_H
10 #define _ASM_SN_ADDRS_H
11 
12 
13 #ifndef __ASSEMBLY__
14 #include <linux/smp.h>
15 #include <linux/types.h>
16 #endif /* !__ASSEMBLY__ */
17 
18 #include <asm/addrspace.h>
19 #include <asm/sn/kldir.h>
20 
21 #if defined(CONFIG_SGI_IP27)
22 #include <asm/sn/sn0/addrs.h>
23 #elif defined(CONFIG_SGI_IP35)
24 #include <asm/sn/sn1/addrs.h>
25 #endif
26 
27 
28 #ifndef __ASSEMBLY__
29 
30 #define PS_UINT_CAST (unsigned long)
31 #define UINT64_CAST (unsigned long)
32 
33 #define HUBREG_CAST (volatile hubreg_t *)
34 
35 #else /* __ASSEMBLY__ */
36 
37 #define PS_UINT_CAST
38 #define UINT64_CAST
39 #define HUBREG_CAST
40 
41 #endif /* __ASSEMBLY__ */
42 
43 
44 #define NASID_GET_META(_n) ((_n) >> NASID_LOCAL_BITS)
45 #ifdef CONFIG_SGI_IP27
46 #define NASID_GET_LOCAL(_n) ((_n) & 0xf)
47 #endif
48 #define NASID_MAKE(_m, _l) (((_m) << NASID_LOCAL_BITS) | (_l))
49 
50 #define NODE_ADDRSPACE_MASK (NODE_ADDRSPACE_SIZE - 1)
51 #define TO_NODE_ADDRSPACE(_pa) (UINT64_CAST (_pa) & NODE_ADDRSPACE_MASK)
52 
53 #define CHANGE_ADDR_NASID(_pa, _nasid) \
54  ((UINT64_CAST(_pa) & ~NASID_MASK) | \
55  (UINT64_CAST(_nasid) << NASID_SHFT))
56 
57 
58 /*
59  * The following macros are used to index to the beginning of a specific
60  * node's address space.
61  */
62 
63 #define NODE_OFFSET(_n) (UINT64_CAST (_n) << NODE_SIZE_BITS)
64 
65 #define NODE_CAC_BASE(_n) (CAC_BASE + NODE_OFFSET(_n))
66 #define NODE_HSPEC_BASE(_n) (HSPEC_BASE + NODE_OFFSET(_n))
67 #define NODE_IO_BASE(_n) (IO_BASE + NODE_OFFSET(_n))
68 #define NODE_MSPEC_BASE(_n) (MSPEC_BASE + NODE_OFFSET(_n))
69 #define NODE_UNCAC_BASE(_n) (UNCAC_BASE + NODE_OFFSET(_n))
70 
71 #define TO_NODE(_n, _x) (NODE_OFFSET(_n) | ((_x) ))
72 #define TO_NODE_CAC(_n, _x) (NODE_CAC_BASE(_n) | ((_x) & TO_PHYS_MASK))
73 #define TO_NODE_UNCAC(_n, _x) (NODE_UNCAC_BASE(_n) | ((_x) & TO_PHYS_MASK))
74 #define TO_NODE_MSPEC(_n, _x) (NODE_MSPEC_BASE(_n) | ((_x) & TO_PHYS_MASK))
75 #define TO_NODE_HSPEC(_n, _x) (NODE_HSPEC_BASE(_n) | ((_x) & TO_PHYS_MASK))
76 
77 
78 #define RAW_NODE_SWIN_BASE(nasid, widget) \
79  (NODE_IO_BASE(nasid) + (UINT64_CAST(widget) << SWIN_SIZE_BITS))
80 
81 #define WIDGETID_GET(addr) ((unsigned char)((addr >> SWIN_SIZE_BITS) & 0xff))
82 
83 /*
84  * The following definitions pertain to the IO special address
85  * space. They define the location of the big and little windows
86  * of any given node.
87  */
88 
89 #define SWIN_SIZE_BITS 24
90 #define SWIN_SIZE (UINT64_CAST 1 << 24)
91 #define SWIN_SIZEMASK (SWIN_SIZE - 1)
92 #define SWIN_WIDGET_MASK 0xF
93 
94 /*
95  * Convert smallwindow address to xtalk address.
96  *
97  * 'addr' can be physical or virtual address, but will be converted
98  * to Xtalk address in the range 0 -> SWINZ_SIZEMASK
99  */
100 #define SWIN_WIDGETADDR(addr) ((addr) & SWIN_SIZEMASK)
101 #define SWIN_WIDGETNUM(addr) (((addr) >> SWIN_SIZE_BITS) & SWIN_WIDGET_MASK)
102 /*
103  * Verify if addr belongs to small window address on node with "nasid"
104  *
105  *
106  * NOTE: "addr" is expected to be XKPHYS address, and NOT physical
107  * address
108  *
109  *
110  */
111 #define NODE_SWIN_ADDR(nasid, addr) \
112  (((addr) >= NODE_SWIN_BASE(nasid, 0)) && \
113  ((addr) < (NODE_SWIN_BASE(nasid, HUB_NUM_WIDGET) + SWIN_SIZE)\
114  ))
115 
116 /*
117  * The following define the major position-independent aliases used
118  * in SN.
119  * UALIAS -- 256MB in size, reads in the UALIAS result in
120  * uncached references to the memory of the reader's node.
121  * CPU_UALIAS -- 128kb in size, the bottom part of UALIAS is flipped
122  * depending on which CPU does the access to provide
123  * all CPUs with unique uncached memory at low addresses.
124  * LBOOT -- 256MB in size, reads in the LBOOT area result in
125  * uncached references to the local hub's boot prom and
126  * other directory-bus connected devices.
127  * IALIAS -- 8MB in size, reads in the IALIAS result in uncached
128  * references to the local hub's registers.
129  */
130 
131 #define UALIAS_BASE HSPEC_BASE
132 #define UALIAS_SIZE 0x10000000 /* 256 Megabytes */
133 #define UALIAS_LIMIT (UALIAS_BASE + UALIAS_SIZE)
134 
135 /*
136  * The bottom of ualias space is flipped depending on whether you're
137  * processor 0 or 1 within a node.
138  */
139 #ifdef CONFIG_SGI_IP27
140 #define UALIAS_FLIP_BASE UALIAS_BASE
141 #define UALIAS_FLIP_SIZE 0x20000
142 #define UALIAS_FLIP_BIT 0x10000
143 #define UALIAS_FLIP_ADDR(_x) (cputoslice(smp_processor_id()) ? \
144  (_x) ^ UALIAS_FLIP_BIT : (_x))
145 
146 #define LBOOT_BASE (HSPEC_BASE + 0x10000000)
147 #define LBOOT_SIZE 0x10000000
148 #define LBOOT_LIMIT (LBOOT_BASE + LBOOT_SIZE)
149 #define LBOOT_STRIDE 0 /* IP27 has only one CPU PROM */
150 
151 #endif
152 
153 #define HUB_REGISTER_WIDGET 1
154 #define IALIAS_BASE NODE_SWIN_BASE(0, HUB_REGISTER_WIDGET)
155 #define IALIAS_SIZE 0x800000 /* 8 Megabytes */
156 #define IS_IALIAS(_a) (((_a) >= IALIAS_BASE) && \
157  ((_a) < (IALIAS_BASE + IALIAS_SIZE)))
158 
159 /*
160  * Macro for referring to Hub's RBOOT space
161  */
162 
163 #ifdef CONFIG_SGI_IP27
164 #define RBOOT_SIZE 0x10000000 /* 256 Megabytes */
165 #define NODE_RBOOT_BASE(_n) (NODE_HSPEC_BASE(_n) + 0x30000000)
166 #define NODE_RBOOT_LIMIT(_n) (NODE_RBOOT_BASE(_n) + RBOOT_SIZE)
167 
168 #endif
169 
170 /*
171  * Macros for referring the Hub's back door space
172  *
173  * These macros correctly process addresses in any node's space.
174  * WARNING: They won't work in assembler.
175  *
176  * BDDIR_ENTRY_LO returns the address of the low double-word of the dir
177  * entry corresponding to a physical (Cac or Uncac) address.
178  * BDDIR_ENTRY_HI returns the address of the high double-word of the entry.
179  * BDPRT_ENTRY returns the address of the double-word protection entry
180  * corresponding to the page containing the physical address.
181  * BDPRT_ENTRY_S Stores the value into the protection entry.
182  * BDPRT_ENTRY_L Load the value from the protection entry.
183  * BDECC_ENTRY returns the address of the ECC byte corresponding to a
184  * double-word at a specified physical address.
185  * BDECC_ENTRY_H returns the address of the two ECC bytes corresponding to a
186  * quad-word at a specified physical address.
187  */
188 #define NODE_BDOOR_BASE(_n) (NODE_HSPEC_BASE(_n) + (NODE_ADDRSPACE_SIZE/2))
189 
190 #define NODE_BDECC_BASE(_n) (NODE_BDOOR_BASE(_n))
191 #define NODE_BDDIR_BASE(_n) (NODE_BDOOR_BASE(_n) + (NODE_ADDRSPACE_SIZE/4))
192 #ifdef CONFIG_SGI_IP27
193 #define BDDIR_ENTRY_LO(_pa) ((HSPEC_BASE + \
194  NODE_ADDRSPACE_SIZE * 3 / 4 + \
195  0x200) | \
196  UINT64_CAST(_pa) & NASID_MASK | \
197  UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK | \
198  UINT64_CAST(_pa) >> 3 & 0x1f << 4)
199 
200 #define BDDIR_ENTRY_HI(_pa) ((HSPEC_BASE + \
201  NODE_ADDRSPACE_SIZE * 3 / 4 + \
202  0x208) | \
203  UINT64_CAST(_pa) & NASID_MASK | \
204  UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK | \
205  UINT64_CAST(_pa) >> 3 & 0x1f << 4)
206 
207 #define BDPRT_ENTRY(_pa, _rgn) ((HSPEC_BASE + \
208  NODE_ADDRSPACE_SIZE * 3 / 4) | \
209  UINT64_CAST(_pa) & NASID_MASK | \
210  UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK | \
211  (_rgn) << 3)
212 #define BDPRT_ENTRY_ADDR(_pa, _rgn) (BDPRT_ENTRY((_pa), (_rgn)))
213 #define BDPRT_ENTRY_S(_pa, _rgn, _val) (*(__psunsigned_t *)BDPRT_ENTRY((_pa), (_rgn))=(_val))
214 #define BDPRT_ENTRY_L(_pa, _rgn) (*(__psunsigned_t *)BDPRT_ENTRY((_pa), (_rgn)))
215 
216 #define BDECC_ENTRY(_pa) ((HSPEC_BASE + \
217  NODE_ADDRSPACE_SIZE / 2) | \
218  UINT64_CAST(_pa) & NASID_MASK | \
219  UINT64_CAST(_pa) >> 2 & BDECC_UPPER_MASK | \
220  UINT64_CAST(_pa) >> 3 & 3)
221 
222 /*
223  * Macro to convert a back door directory or protection address into the
224  * raw physical address of the associated cache line or protection page.
225  */
226 #define BDADDR_IS_DIR(_ba) ((UINT64_CAST (_ba) & 0x200) != 0)
227 #define BDADDR_IS_PRT(_ba) ((UINT64_CAST (_ba) & 0x200) == 0)
228 
229 #define BDDIR_TO_MEM(_ba) (UINT64_CAST (_ba) & NASID_MASK | \
230  (UINT64_CAST(_ba) & BDDIR_UPPER_MASK)<<2 | \
231  (UINT64_CAST(_ba) & 0x1f << 4) << 3)
232 
233 #define BDPRT_TO_MEM(_ba) (UINT64_CAST (_ba) & NASID_MASK | \
234  (UINT64_CAST(_ba) & BDDIR_UPPER_MASK)<<2)
235 
236 #define BDECC_TO_MEM(_ba) (UINT64_CAST (_ba) & NASID_MASK | \
237  (UINT64_CAST(_ba) & BDECC_UPPER_MASK)<<2 | \
238  (UINT64_CAST(_ba) & 3) << 3)
239 #endif /* CONFIG_SGI_IP27 */
240 
241 
242 /*
243  * The following macros produce the correct base virtual address for
244  * the hub registers. The LOCAL_HUB_* macros produce the appropriate
245  * address for the local registers. The REMOTE_HUB_* macro produce
246  * the address for the specified hub's registers. The intent is
247  * that the appropriate PI, MD, NI, or II register would be substituted
248  * for _x.
249  */
250 
251 /*
252  * WARNING:
253  * When certain Hub chip workaround are defined, it's not sufficient
254  * to dereference the *_HUB_ADDR() macros. You should instead use
255  * HUB_L() and HUB_S() if you must deal with pointers to hub registers.
256  * Otherwise, the recommended approach is to use *_HUB_L() and *_HUB_S().
257  * They're always safe.
258  */
259 #define LOCAL_HUB_ADDR(_x) (HUBREG_CAST (IALIAS_BASE + (_x)))
260 #define REMOTE_HUB_ADDR(_n, _x) (HUBREG_CAST (NODE_SWIN_BASE(_n, 1) + \
261  0x800000 + (_x)))
262 #ifdef CONFIG_SGI_IP27
263 #define REMOTE_HUB_PI_ADDR(_n, _sn, _x) (HUBREG_CAST (NODE_SWIN_BASE(_n, 1) + \
264  0x800000 + (_x)))
265 #endif /* CONFIG_SGI_IP27 */
266 
267 #ifndef __ASSEMBLY__
268 
269 #define HUB_L(_a) *(_a)
270 #define HUB_S(_a, _d) *(_a) = (_d)
271 
272 #define LOCAL_HUB_L(_r) HUB_L(LOCAL_HUB_ADDR(_r))
273 #define LOCAL_HUB_S(_r, _d) HUB_S(LOCAL_HUB_ADDR(_r), (_d))
274 #define REMOTE_HUB_L(_n, _r) HUB_L(REMOTE_HUB_ADDR((_n), (_r)))
275 #define REMOTE_HUB_S(_n, _r, _d) HUB_S(REMOTE_HUB_ADDR((_n), (_r)), (_d))
276 #define REMOTE_HUB_PI_L(_n, _sn, _r) HUB_L(REMOTE_HUB_PI_ADDR((_n), (_sn), (_r)))
277 #define REMOTE_HUB_PI_S(_n, _sn, _r, _d) HUB_S(REMOTE_HUB_PI_ADDR((_n), (_sn), (_r)), (_d))
278 
279 #endif /* !__ASSEMBLY__ */
280 
281 /*
282  * The following macros are used to get to a hub/bridge register, given
283  * the base of the register space.
284  */
285 #define HUB_REG_PTR(_base, _off) \
286  (HUBREG_CAST((__psunsigned_t)(_base) + (__psunsigned_t)(_off)))
287 
288 #define HUB_REG_PTR_L(_base, _off) \
289  HUB_L(HUB_REG_PTR((_base), (_off)))
290 
291 #define HUB_REG_PTR_S(_base, _off, _data) \
292  HUB_S(HUB_REG_PTR((_base), (_off)), (_data))
293 
294 /*
295  * Software structure locations -- permanently fixed
296  * See diagram in kldir.h
297  */
298 
299 #define PHYS_RAMBASE 0x0
300 #define K0_RAMBASE PHYS_TO_K0(PHYS_RAMBASE)
301 
302 #define EX_HANDLER_OFFSET(slice) ((slice) << 16)
303 #define EX_HANDLER_ADDR(nasid, slice) \
304  PHYS_TO_K0(NODE_OFFSET(nasid) | EX_HANDLER_OFFSET(slice))
305 #define EX_HANDLER_SIZE 0x0400
306 
307 #define EX_FRAME_OFFSET(slice) ((slice) << 16 | 0x400)
308 #define EX_FRAME_ADDR(nasid, slice) \
309  PHYS_TO_K0(NODE_OFFSET(nasid) | EX_FRAME_OFFSET(slice))
310 #define EX_FRAME_SIZE 0x0c00
311 
312 #define ARCS_SPB_OFFSET 0x1000
313 #define ARCS_SPB_ADDR(nasid) \
314  PHYS_TO_K0(NODE_OFFSET(nasid) | ARCS_SPB_OFFSET)
315 #define ARCS_SPB_SIZE 0x0400
316 
317 #define KLDIR_OFFSET 0x2000
318 #define KLDIR_ADDR(nasid) \
319  TO_NODE_UNCAC((nasid), KLDIR_OFFSET)
320 #define KLDIR_SIZE 0x0400
321 
322 
323 /*
324  * Software structure locations -- indirected through KLDIR
325  * See diagram in kldir.h
326  *
327  * Important: All low memory structures must only be accessed
328  * uncached, except for the symmon stacks.
329  */
330 
331 #define KLI_LAUNCH 0 /* Dir. entries */
332 #define KLI_KLCONFIG 1
333 #define KLI_NMI 2
334 #define KLI_GDA 3
335 #define KLI_FREEMEM 4
336 #define KLI_SYMMON_STK 5
337 #define KLI_PI_ERROR 6
338 #define KLI_KERN_VARS 7
339 #define KLI_KERN_XP 8
340 #define KLI_KERN_PARTID 9
341 
342 #ifndef __ASSEMBLY__
343 
344 #define KLD_BASE(nasid) ((kldir_ent_t *) KLDIR_ADDR(nasid))
345 #define KLD_LAUNCH(nasid) (KLD_BASE(nasid) + KLI_LAUNCH)
346 #define KLD_NMI(nasid) (KLD_BASE(nasid) + KLI_NMI)
347 #define KLD_KLCONFIG(nasid) (KLD_BASE(nasid) + KLI_KLCONFIG)
348 #define KLD_PI_ERROR(nasid) (KLD_BASE(nasid) + KLI_PI_ERROR)
349 #define KLD_GDA(nasid) (KLD_BASE(nasid) + KLI_GDA)
350 #define KLD_SYMMON_STK(nasid) (KLD_BASE(nasid) + KLI_SYMMON_STK)
351 #define KLD_FREEMEM(nasid) (KLD_BASE(nasid) + KLI_FREEMEM)
352 #define KLD_KERN_VARS(nasid) (KLD_BASE(nasid) + KLI_KERN_VARS)
353 #define KLD_KERN_XP(nasid) (KLD_BASE(nasid) + KLI_KERN_XP)
354 #define KLD_KERN_PARTID(nasid) (KLD_BASE(nasid) + KLI_KERN_PARTID)
355 
356 #define LAUNCH_OFFSET(nasid, slice) \
357  (KLD_LAUNCH(nasid)->offset + \
358  KLD_LAUNCH(nasid)->stride * (slice))
359 #define LAUNCH_ADDR(nasid, slice) \
360  TO_NODE_UNCAC((nasid), LAUNCH_OFFSET(nasid, slice))
361 #define LAUNCH_SIZE(nasid) KLD_LAUNCH(nasid)->size
362 
363 #define SN_NMI_OFFSET(nasid, slice) \
364  (KLD_NMI(nasid)->offset + \
365  KLD_NMI(nasid)->stride * (slice))
366 #define NMI_ADDR(nasid, slice) \
367  TO_NODE_UNCAC((nasid), SN_NMI_OFFSET(nasid, slice))
368 #define NMI_SIZE(nasid) KLD_NMI(nasid)->size
369 
370 #define KLCONFIG_OFFSET(nasid) KLD_KLCONFIG(nasid)->offset
371 #define KLCONFIG_ADDR(nasid) \
372  TO_NODE_UNCAC((nasid), KLCONFIG_OFFSET(nasid))
373 #define KLCONFIG_SIZE(nasid) KLD_KLCONFIG(nasid)->size
374 
375 #define GDA_ADDR(nasid) KLD_GDA(nasid)->pointer
376 #define GDA_SIZE(nasid) KLD_GDA(nasid)->size
377 
378 #define SYMMON_STK_OFFSET(nasid, slice) \
379  (KLD_SYMMON_STK(nasid)->offset + \
380  KLD_SYMMON_STK(nasid)->stride * (slice))
381 #define SYMMON_STK_STRIDE(nasid) KLD_SYMMON_STK(nasid)->stride
382 
383 #define SYMMON_STK_ADDR(nasid, slice) \
384  TO_NODE_CAC((nasid), SYMMON_STK_OFFSET(nasid, slice))
385 
386 #define SYMMON_STK_SIZE(nasid) KLD_SYMMON_STK(nasid)->stride
387 
388 #define SYMMON_STK_END(nasid) (SYMMON_STK_ADDR(nasid, 0) + KLD_SYMMON_STK(nasid)->size)
389 
390 /* loading symmon 4k below UNIX. the arcs loader needs the topaddr for a
391  * relocatable program
392  */
393 #define UNIX_DEBUG_LOADADDR 0x300000
394 #define SYMMON_LOADADDR(nasid) \
395  TO_NODE(nasid, PHYS_TO_K0(UNIX_DEBUG_LOADADDR - 0x1000))
396 
397 #define FREEMEM_OFFSET(nasid) KLD_FREEMEM(nasid)->offset
398 #define FREEMEM_ADDR(nasid) SYMMON_STK_END(nasid)
399 /*
400  * XXX
401  * Fix this. FREEMEM_ADDR should be aware of if symmon is loaded.
402  * Also, it should take into account what prom thinks to be a safe
403  * address
404  PHYS_TO_K0(NODE_OFFSET(nasid) + FREEMEM_OFFSET(nasid))
405  */
406 #define FREEMEM_SIZE(nasid) KLD_FREEMEM(nasid)->size
407 
408 #define PI_ERROR_OFFSET(nasid) KLD_PI_ERROR(nasid)->offset
409 #define PI_ERROR_ADDR(nasid) \
410  TO_NODE_UNCAC((nasid), PI_ERROR_OFFSET(nasid))
411 #define PI_ERROR_SIZE(nasid) KLD_PI_ERROR(nasid)->size
412 
413 #define NODE_OFFSET_TO_K0(_nasid, _off) \
414  PHYS_TO_K0((NODE_OFFSET(_nasid) + (_off)) | CAC_BASE)
415 #define NODE_OFFSET_TO_K1(_nasid, _off) \
416  TO_UNCAC((NODE_OFFSET(_nasid) + (_off)) | UNCAC_BASE)
417 #define K0_TO_NODE_OFFSET(_k0addr) \
418  ((__psunsigned_t)(_k0addr) & NODE_ADDRSPACE_MASK)
419 
420 #define KERN_VARS_ADDR(nasid) KLD_KERN_VARS(nasid)->pointer
421 #define KERN_VARS_SIZE(nasid) KLD_KERN_VARS(nasid)->size
422 
423 #define KERN_XP_ADDR(nasid) KLD_KERN_XP(nasid)->pointer
424 #define KERN_XP_SIZE(nasid) KLD_KERN_XP(nasid)->size
425 
426 #define GPDA_ADDR(nasid) TO_NODE_CAC(nasid, GPDA_OFFSET)
427 
428 #endif /* !__ASSEMBLY__ */
429 
430 
431 #endif /* _ASM_SN_ADDRS_H */
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