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