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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#include <linux/config.h>
13
14#ifndef __ASSEMBLY__
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#if defined(CONFIG_SGI_IO) /* FIXME */
31#define PS_UINT_CAST (__psunsigned_t)
32#define UINT64_CAST (__uint64_t)
33#else /* CONFIG_SGI_IO */
34#define PS_UINT_CAST (unsigned long)
35#define UINT64_CAST (unsigned long)
36#endif /* CONFIG_SGI_IO */
37
38#define HUBREG_CAST (volatile hubreg_t *)
39
40#else /* __ASSEMBLY__ */
41
42#define PS_UINT_CAST
43#define UINT64_CAST
44#define HUBREG_CAST
45
46#endif /* __ASSEMBLY__ */
47
48
49#define NASID_GET_META(_n) ((_n) >> NASID_LOCAL_BITS)
50#ifdef CONFIG_SGI_IP27
51#define NASID_GET_LOCAL(_n) ((_n) & 0xf)
52#endif
53#define NASID_MAKE(_m, _l) (((_m) << NASID_LOCAL_BITS) | (_l))
54
55#define NODE_ADDRSPACE_MASK (NODE_ADDRSPACE_SIZE - 1)
56#define TO_NODE_ADDRSPACE(_pa) (UINT64_CAST (_pa) & NODE_ADDRSPACE_MASK)
57
58#define CHANGE_ADDR_NASID(_pa, _nasid) \
59 ((UINT64_CAST (_pa) & ~NASID_MASK) | \
60 (UINT64_CAST(_nasid) << NASID_SHFT))
61
62
63/*
64 * The following macros are used to index to the beginning of a specific
65 * node's address space.
66 */
67
68#define NODE_OFFSET(_n) (UINT64_CAST (_n) << NODE_SIZE_BITS)
69
70#define NODE_CAC_BASE(_n) (CAC_BASE + NODE_OFFSET(_n))
71#define NODE_HSPEC_BASE(_n) (HSPEC_BASE + NODE_OFFSET(_n))
72#define NODE_IO_BASE(_n) (IO_BASE + NODE_OFFSET(_n))
73#define NODE_MSPEC_BASE(_n) (MSPEC_BASE + NODE_OFFSET(_n))
74#define NODE_UNCAC_BASE(_n) (UNCAC_BASE + NODE_OFFSET(_n))
75
76#define TO_NODE(_n, _x) (NODE_OFFSET(_n) | ((_x) ))
77#define TO_NODE_CAC(_n, _x) (NODE_CAC_BASE(_n) | ((_x) & TO_PHYS_MASK))
78#define TO_NODE_UNCAC(_n, _x) (NODE_UNCAC_BASE(_n) | ((_x) & TO_PHYS_MASK))
79#define TO_NODE_MSPEC(_n, _x) (NODE_MSPEC_BASE(_n) | ((_x) & TO_PHYS_MASK))
80#define TO_NODE_HSPEC(_n, _x) (NODE_HSPEC_BASE(_n) | ((_x) & TO_PHYS_MASK))
81
82
83#define RAW_NODE_SWIN_BASE(nasid, widget) \
84 (NODE_IO_BASE(nasid) + (UINT64_CAST (widget) << SWIN_SIZE_BITS))
85
86#define WIDGETID_GET(addr) ((unsigned char)((addr >> SWIN_SIZE_BITS) & 0xff))
87
88/*
89 * The following definitions pertain to the IO special address
90 * space. They define the location of the big and little windows
91 * of any given node.
92 */
93
94#define SWIN_SIZE_BITS 24
95#define SWIN_SIZE (UINT64_CAST 1 << 24)
96#define SWIN_SIZEMASK (SWIN_SIZE - 1)
97#define SWIN_WIDGET_MASK 0xF
98
99/*
100 * Convert smallwindow address to xtalk address.
101 *
102 * 'addr' can be physical or virtual address, but will be converted
103 * to Xtalk address in the range 0 -> SWINZ_SIZEMASK
104 */
105#define SWIN_WIDGETADDR(addr) ((addr) & SWIN_SIZEMASK)
106#define SWIN_WIDGETNUM(addr) (((addr) >> SWIN_SIZE_BITS) & SWIN_WIDGET_MASK)
107/*
108 * Verify if addr belongs to small window address on node with "nasid"
109 *
110 *
111 * NOTE: "addr" is expected to be XKPHYS address, and NOT physical
112 * address
113 *
114 *
115 */
116#define NODE_SWIN_ADDR(nasid, addr) \
117 (((addr) >= NODE_SWIN_BASE(nasid, 0)) && \
118 ((addr) < (NODE_SWIN_BASE(nasid, HUB_NUM_WIDGET) + SWIN_SIZE)\
119 ))
120
121/*
122 * The following define the major position-independent aliases used
123 * in SN.
124 * UALIAS -- 256MB in size, reads in the UALIAS result in
125 * uncached references to the memory of the reader's node.
126 * CPU_UALIAS -- 128kb in size, the bottom part of UALIAS is flipped
127 * depending on which CPU does the access to provide
128 * all CPUs with unique uncached memory at low addresses.
129 * LBOOT -- 256MB in size, reads in the LBOOT area result in
130 * uncached references to the local hub's boot prom and
131 * other directory-bus connected devices.
132 * IALIAS -- 8MB in size, reads in the IALIAS result in uncached
133 * references to the local hub's registers.
134 */
135
136#define UALIAS_BASE HSPEC_BASE
137#define UALIAS_SIZE 0x10000000 /* 256 Megabytes */
138#define UALIAS_LIMIT (UALIAS_BASE + UALIAS_SIZE)
139
140/*
141 * The bottom of ualias space is flipped depending on whether you're
142 * processor 0 or 1 within a node.
143 */
144#ifdef CONFIG_SGI_IP27
145#define UALIAS_FLIP_BASE UALIAS_BASE
146#define UALIAS_FLIP_SIZE 0x20000
147#define UALIAS_FLIP_BIT 0x10000
148#define UALIAS_FLIP_ADDR(_x) (cputoslice(smp_processor_id()) ? \
149 (_x) ^ UALIAS_FLIP_BIT : (_x))
150
151#define LBOOT_BASE (HSPEC_BASE + 0x10000000)
152#define LBOOT_SIZE 0x10000000
153#define LBOOT_LIMIT (LBOOT_BASE + LBOOT_SIZE)
154#define LBOOT_STRIDE 0 /* IP27 has only one CPU PROM */
155
156#endif
157
158#define HUB_REGISTER_WIDGET 1
159#define IALIAS_BASE NODE_SWIN_BASE(0, HUB_REGISTER_WIDGET)
160#define IALIAS_SIZE 0x800000 /* 8 Megabytes */
161#define IS_IALIAS(_a) (((_a) >= IALIAS_BASE) && \
162 ((_a) < (IALIAS_BASE + IALIAS_SIZE)))
163
164/*
165 * Macro for referring to Hub's RBOOT space
166 */
167
168#ifdef CONFIG_SGI_IP27
169#define RBOOT_SIZE 0x10000000 /* 256 Megabytes */
170#define NODE_RBOOT_BASE(_n) (NODE_HSPEC_BASE(_n) + 0x30000000)
171#define NODE_RBOOT_LIMIT(_n) (NODE_RBOOT_BASE(_n) + RBOOT_SIZE)
172
173#endif
174
175/*
176 * Macros for referring the Hub's back door space
177 *
178 * These macros correctly process addresses in any node's space.
179 * WARNING: They won't work in assembler.
180 *
181 * BDDIR_ENTRY_LO returns the address of the low double-word of the dir
182 * entry corresponding to a physical (Cac or Uncac) address.
183 * BDDIR_ENTRY_HI returns the address of the high double-word of the entry.
184 * BDPRT_ENTRY returns the address of the double-word protection entry
185 * corresponding to the page containing the physical address.
186 * BDPRT_ENTRY_S Stores the value into the protection entry.
187 * BDPRT_ENTRY_L Load the value from the protection entry.
188 * BDECC_ENTRY returns the address of the ECC byte corresponding to a
189 * double-word at a specified physical address.
190 * BDECC_ENTRY_H returns the address of the two ECC bytes corresponding to a
191 * quad-word at a specified physical address.
192 */
193#define NODE_BDOOR_BASE(_n) (NODE_HSPEC_BASE(_n) + (NODE_ADDRSPACE_SIZE/2))
194
195#define NODE_BDECC_BASE(_n) (NODE_BDOOR_BASE(_n))
196#define NODE_BDDIR_BASE(_n) (NODE_BDOOR_BASE(_n) + (NODE_ADDRSPACE_SIZE/4))
197#ifdef CONFIG_SGI_IP27
198#define BDDIR_ENTRY_LO(_pa) ((HSPEC_BASE + \
199 NODE_ADDRSPACE_SIZE * 3 / 4 + \
200 0x200) | \
201 UINT64_CAST (_pa) & NASID_MASK | \
202 UINT64_CAST (_pa) >> 2 & BDDIR_UPPER_MASK | \
203 UINT64_CAST (_pa) >> 3 & 0x1f << 4)
204
205#define BDDIR_ENTRY_HI(_pa) ((HSPEC_BASE + \
206 NODE_ADDRSPACE_SIZE * 3 / 4 + \
207 0x208) | \
208 UINT64_CAST (_pa) & NASID_MASK | \
209 UINT64_CAST (_pa) >> 2 & BDDIR_UPPER_MASK | \
210 UINT64_CAST (_pa) >> 3 & 0x1f << 4)
211
212#define BDPRT_ENTRY(_pa, _rgn) ((HSPEC_BASE + \
213 NODE_ADDRSPACE_SIZE * 3 / 4) | \
214 UINT64_CAST (_pa) & NASID_MASK | \
215 UINT64_CAST (_pa) >> 2 & BDDIR_UPPER_MASK | \
216 (_rgn) << 3)
217#define BDPRT_ENTRY_ADDR(_pa,_rgn) (BDPRT_ENTRY((_pa),(_rgn)))
218#define BDPRT_ENTRY_S(_pa,_rgn,_val) (*(__psunsigned_t *)BDPRT_ENTRY((_pa),(_rgn))=(_val))
219#define BDPRT_ENTRY_L(_pa,_rgn) (*(__psunsigned_t *)BDPRT_ENTRY((_pa),(_rgn)))
220
221#define BDECC_ENTRY(_pa) ((HSPEC_BASE + \
222 NODE_ADDRSPACE_SIZE / 2) | \
223 UINT64_CAST (_pa) & NASID_MASK | \
224 UINT64_CAST (_pa) >> 2 & BDECC_UPPER_MASK | \
225 UINT64_CAST (_pa) >> 3 & 3)
226
227/*
228 * Macro to convert a back door directory or protection address into the
229 * raw physical address of the associated cache line or protection page.
230 */
231#define BDADDR_IS_DIR(_ba) ((UINT64_CAST (_ba) & 0x200) != 0)
232#define BDADDR_IS_PRT(_ba) ((UINT64_CAST (_ba) & 0x200) == 0)
233
234#define BDDIR_TO_MEM(_ba) (UINT64_CAST (_ba) & NASID_MASK | \
235 (UINT64_CAST (_ba) & BDDIR_UPPER_MASK)<<2 | \
236 (UINT64_CAST (_ba) & 0x1f << 4) << 3)
237
238#define BDPRT_TO_MEM(_ba) (UINT64_CAST (_ba) & NASID_MASK | \
239 (UINT64_CAST (_ba) & BDDIR_UPPER_MASK)<<2)
240
241#define BDECC_TO_MEM(_ba) (UINT64_CAST (_ba) & NASID_MASK | \
242 (UINT64_CAST (_ba) & BDECC_UPPER_MASK)<<2 | \
243 (UINT64_CAST (_ba) & 3) << 3)
244#endif /* CONFIG_SGI_IP27 */
245
246
247/*
248 * The following macros produce the correct base virtual address for
249 * the hub registers. The LOCAL_HUB_* macros produce the appropriate
250 * address for the local registers. The REMOTE_HUB_* macro produce
251 * the address for the specified hub's registers. The intent is
252 * that the appropriate PI, MD, NI, or II register would be substituted
253 * for _x.
254 */
255
256#ifdef _STANDALONE
257
258/* DO NOT USE THESE DIRECTLY IN THE KERNEL. SEE BELOW. */
259#define LOCAL_HUB(_x) (HUBREG_CAST (IALIAS_BASE + (_x)))
260#define REMOTE_HUB(_n, _x) (HUBREG_CAST (NODE_SWIN_BASE(_n, 1) + \
261 0x800000 + (_x)))
262#endif /* _STANDALONE */
263
264/*
265 * WARNING:
266 * When certain Hub chip workaround are defined, it's not sufficient
267 * to dereference the *_HUB_ADDR() macros. You should instead use
268 * HUB_L() and HUB_S() if you must deal with pointers to hub registers.
269 * Otherwise, the recommended approach is to use *_HUB_L() and *_HUB_S().
270 * They're always safe.
271 */
272#define LOCAL_HUB_ADDR(_x) (HUBREG_CAST (IALIAS_BASE + (_x)))
273#define REMOTE_HUB_ADDR(_n, _x) (HUBREG_CAST (NODE_SWIN_BASE(_n, 1) + \
274 0x800000 + (_x)))
275#ifdef CONFIG_SGI_IP27
276#define REMOTE_HUB_PI_ADDR(_n, _sn, _x) (HUBREG_CAST (NODE_SWIN_BASE(_n, 1) + \
277 0x800000 + (_x)))
278#endif /* CONFIG_SGI_IP27 */
279
280#ifndef __ASSEMBLY__
281
282#define HUB_L(_a) *(_a)
283#define HUB_S(_a, _d) *(_a) = (_d)
284
285#define LOCAL_HUB_L(_r) HUB_L(LOCAL_HUB_ADDR(_r))
286#define LOCAL_HUB_S(_r, _d) HUB_S(LOCAL_HUB_ADDR(_r), (_d))
287#define REMOTE_HUB_L(_n, _r) HUB_L(REMOTE_HUB_ADDR((_n), (_r)))
288#define REMOTE_HUB_S(_n, _r, _d) HUB_S(REMOTE_HUB_ADDR((_n), (_r)), (_d))
289#define REMOTE_HUB_PI_L(_n, _sn, _r) HUB_L(REMOTE_HUB_PI_ADDR((_n), (_sn), (_r)))
290#define REMOTE_HUB_PI_S(_n, _sn, _r, _d) HUB_S(REMOTE_HUB_PI_ADDR((_n), (_sn), (_r)), (_d))
291
292#endif /* !__ASSEMBLY__ */
293
294/*
295 * The following macros are used to get to a hub/bridge register, given
296 * the base of the register space.
297 */
298#define HUB_REG_PTR(_base, _off) \
299 (HUBREG_CAST ((__psunsigned_t)(_base) + (__psunsigned_t)(_off)))
300
301#define HUB_REG_PTR_L(_base, _off) \
302 HUB_L(HUB_REG_PTR((_base), (_off)))
303
304#define HUB_REG_PTR_S(_base, _off, _data) \
305 HUB_S(HUB_REG_PTR((_base), (_off)), (_data))
306
307/*
308 * Software structure locations -- permanently fixed
309 * See diagram in kldir.h
310 */
311
312#define PHYS_RAMBASE 0x0
313#define K0_RAMBASE PHYS_TO_K0(PHYS_RAMBASE)
314
315#define EX_HANDLER_OFFSET(slice) ((slice) << 16)
316#define EX_HANDLER_ADDR(nasid, slice) \
317 PHYS_TO_K0(NODE_OFFSET(nasid) | EX_HANDLER_OFFSET(slice))
318#define EX_HANDLER_SIZE 0x0400
319
320#define EX_FRAME_OFFSET(slice) ((slice) << 16 | 0x400)
321#define EX_FRAME_ADDR(nasid, slice) \
322 PHYS_TO_K0(NODE_OFFSET(nasid) | EX_FRAME_OFFSET(slice))
323#define EX_FRAME_SIZE 0x0c00
324
325#define ARCS_SPB_OFFSET 0x1000
326#define ARCS_SPB_ADDR(nasid) \
327 PHYS_TO_K0(NODE_OFFSET(nasid) | ARCS_SPB_OFFSET)
328#define ARCS_SPB_SIZE 0x0400
329
330#ifdef _STANDALONE
331
332#define ARCS_TVECTOR_OFFSET 0x2800
333#define ARCS_PVECTOR_OFFSET 0x2c00
334
335/*
336 * These addresses are used by the master CPU to install the transfer
337 * and private vectors. All others use the SPB to find them.
338 */
339#define TVADDR (NODE_CAC_BASE(get_nasid()) + ARCS_TVECTOR_OFFSET)
340#define PVADDR (NODE_CAC_BASE(get_nasid()) + ARCS_PVECTOR_OFFSET)
341
342#endif /* _STANDALONE */
343
344#define KLDIR_OFFSET 0x2000
345#define KLDIR_ADDR(nasid) \
346 TO_NODE_UNCAC((nasid), KLDIR_OFFSET)
347#define KLDIR_SIZE 0x0400
348
349
350/*
351 * Software structure locations -- indirected through KLDIR
352 * See diagram in kldir.h
353 *
354 * Important: All low memory structures must only be accessed
355 * uncached, except for the symmon stacks.
356 */
357
358#define KLI_LAUNCH 0 /* Dir. entries */
359#define KLI_KLCONFIG 1
360#define KLI_NMI 2
361#define KLI_GDA 3
362#define KLI_FREEMEM 4
363#define KLI_SYMMON_STK 5
364#define KLI_PI_ERROR 6
365#define KLI_KERN_VARS 7
366#define KLI_KERN_XP 8
367#define KLI_KERN_PARTID 9
368
369#ifndef __ASSEMBLY__
370
371#define KLD_BASE(nasid) ((kldir_ent_t *) KLDIR_ADDR(nasid))
372#define KLD_LAUNCH(nasid) (KLD_BASE(nasid) + KLI_LAUNCH)
373#define KLD_NMI(nasid) (KLD_BASE(nasid) + KLI_NMI)
374#define KLD_KLCONFIG(nasid) (KLD_BASE(nasid) + KLI_KLCONFIG)
375#define KLD_PI_ERROR(nasid) (KLD_BASE(nasid) + KLI_PI_ERROR)
376#define KLD_GDA(nasid) (KLD_BASE(nasid) + KLI_GDA)
377#define KLD_SYMMON_STK(nasid) (KLD_BASE(nasid) + KLI_SYMMON_STK)
378#define KLD_FREEMEM(nasid) (KLD_BASE(nasid) + KLI_FREEMEM)
379#define KLD_KERN_VARS(nasid) (KLD_BASE(nasid) + KLI_KERN_VARS)
380#define KLD_KERN_XP(nasid) (KLD_BASE(nasid) + KLI_KERN_XP)
381#define KLD_KERN_PARTID(nasid) (KLD_BASE(nasid) + KLI_KERN_PARTID)
382
383#define LAUNCH_OFFSET(nasid, slice) \
384 (KLD_LAUNCH(nasid)->offset + \
385 KLD_LAUNCH(nasid)->stride * (slice))
386#define LAUNCH_ADDR(nasid, slice) \
387 TO_NODE_UNCAC((nasid), LAUNCH_OFFSET(nasid, slice))
388#define LAUNCH_SIZE(nasid) KLD_LAUNCH(nasid)->size
389
390#define NMI_OFFSET(nasid, slice) \
391 (KLD_NMI(nasid)->offset + \
392 KLD_NMI(nasid)->stride * (slice))
393#define NMI_ADDR(nasid, slice) \
394 TO_NODE_UNCAC((nasid), NMI_OFFSET(nasid, slice))
395#define NMI_SIZE(nasid) KLD_NMI(nasid)->size
396
397#define KLCONFIG_OFFSET(nasid) KLD_KLCONFIG(nasid)->offset
398#define KLCONFIG_ADDR(nasid) \
399 TO_NODE_UNCAC((nasid), KLCONFIG_OFFSET(nasid))
400#define KLCONFIG_SIZE(nasid) KLD_KLCONFIG(nasid)->size
401
402#define GDA_ADDR(nasid) KLD_GDA(nasid)->pointer
403#define GDA_SIZE(nasid) KLD_GDA(nasid)->size
404
405#define SYMMON_STK_OFFSET(nasid, slice) \
406 (KLD_SYMMON_STK(nasid)->offset + \
407 KLD_SYMMON_STK(nasid)->stride * (slice))
408#define SYMMON_STK_STRIDE(nasid) KLD_SYMMON_STK(nasid)->stride
409
410#define SYMMON_STK_ADDR(nasid, slice) \
411 TO_NODE_CAC((nasid), SYMMON_STK_OFFSET(nasid, slice))
412
413#define SYMMON_STK_SIZE(nasid) KLD_SYMMON_STK(nasid)->stride
414
415#define SYMMON_STK_END(nasid) (SYMMON_STK_ADDR(nasid, 0) + KLD_SYMMON_STK(nasid)->size)
416
417/* loading symmon 4k below UNIX. the arcs loader needs the topaddr for a
418 * relocatable program
419 */
420#define UNIX_DEBUG_LOADADDR 0x300000
421#define SYMMON_LOADADDR(nasid) \
422 TO_NODE(nasid, PHYS_TO_K0(UNIX_DEBUG_LOADADDR - 0x1000))
423
424#define FREEMEM_OFFSET(nasid) KLD_FREEMEM(nasid)->offset
425#define FREEMEM_ADDR(nasid) SYMMON_STK_END(nasid)
426/*
427 * XXX
428 * Fix this. FREEMEM_ADDR should be aware of if symmon is loaded.
429 * Also, it should take into account what prom thinks to be a safe
430 * address
431 PHYS_TO_K0(NODE_OFFSET(nasid) + FREEMEM_OFFSET(nasid))
432 */
433#define FREEMEM_SIZE(nasid) KLD_FREEMEM(nasid)->size
434
435#define PI_ERROR_OFFSET(nasid) KLD_PI_ERROR(nasid)->offset
436#define PI_ERROR_ADDR(nasid) \
437 TO_NODE_UNCAC((nasid), PI_ERROR_OFFSET(nasid))
438#define PI_ERROR_SIZE(nasid) KLD_PI_ERROR(nasid)->size
439
440#define NODE_OFFSET_TO_K0(_nasid, _off) \
441 PHYS_TO_K0((NODE_OFFSET(_nasid) + (_off)) | CAC_BASE)
442#define NODE_OFFSET_TO_K1(_nasid, _off) \
443 TO_UNCAC((NODE_OFFSET(_nasid) + (_off)) | UNCAC_BASE)
444#define K0_TO_NODE_OFFSET(_k0addr) \
445 ((__psunsigned_t)(_k0addr) & NODE_ADDRSPACE_MASK)
446
447#define KERN_VARS_ADDR(nasid) KLD_KERN_VARS(nasid)->pointer
448#define KERN_VARS_SIZE(nasid) KLD_KERN_VARS(nasid)->size
449
450#define KERN_XP_ADDR(nasid) KLD_KERN_XP(nasid)->pointer
451#define KERN_XP_SIZE(nasid) KLD_KERN_XP(nasid)->size
452
453#define GPDA_ADDR(nasid) TO_NODE_CAC(nasid, GPDA_OFFSET)
454
455#endif /* !__ASSEMBLY__ */
456
457
458#endif /* _ASM_SN_ADDRS_H */