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 */
432