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 UINT64_CAST		(unsigned long)
31 
32 #else /* __ASSEMBLY__ */
33 
34 #define UINT64_CAST
35 
36 #endif /* __ASSEMBLY__ */
37 
38 
39 #define NASID_GET_META(_n)	((_n) >> NASID_LOCAL_BITS)
40 #ifdef CONFIG_SGI_IP27
41 #define NASID_GET_LOCAL(_n)	((_n) & 0xf)
42 #endif
43 #define NASID_MAKE(_m, _l)	(((_m) << NASID_LOCAL_BITS) | (_l))
44 
45 #define NODE_ADDRSPACE_MASK	(NODE_ADDRSPACE_SIZE - 1)
46 #define TO_NODE_ADDRSPACE(_pa)	(UINT64_CAST (_pa) & NODE_ADDRSPACE_MASK)
47 
48 #define CHANGE_ADDR_NASID(_pa, _nasid)	\
49 		((UINT64_CAST(_pa) & ~NASID_MASK) | \
50 		 (UINT64_CAST(_nasid) <<  NASID_SHFT))
51 
52 
53 /*
54  * The following macros are used to index to the beginning of a specific
55  * node's address space.
56  */
57 
58 #define NODE_OFFSET(_n)		(UINT64_CAST (_n) << NODE_SIZE_BITS)
59 
60 #define NODE_CAC_BASE(_n)	(CAC_BASE   + NODE_OFFSET(_n))
61 #define NODE_HSPEC_BASE(_n)	(HSPEC_BASE + NODE_OFFSET(_n))
62 #define NODE_IO_BASE(_n)	(IO_BASE    + NODE_OFFSET(_n))
63 #define NODE_MSPEC_BASE(_n)	(MSPEC_BASE + NODE_OFFSET(_n))
64 #define NODE_UNCAC_BASE(_n)	(UNCAC_BASE + NODE_OFFSET(_n))
65 
66 #define TO_NODE(_n, _x)		(NODE_OFFSET(_n)     | ((_x)		   ))
67 #define TO_NODE_CAC(_n, _x)	(NODE_CAC_BASE(_n)   | ((_x) & TO_PHYS_MASK))
68 #define TO_NODE_UNCAC(_n, _x)	(NODE_UNCAC_BASE(_n) | ((_x) & TO_PHYS_MASK))
69 #define TO_NODE_MSPEC(_n, _x)	(NODE_MSPEC_BASE(_n) | ((_x) & TO_PHYS_MASK))
70 #define TO_NODE_HSPEC(_n, _x)	(NODE_HSPEC_BASE(_n) | ((_x) & TO_PHYS_MASK))
71 
72 
73 #define RAW_NODE_SWIN_BASE(nasid, widget)				\
74 	(NODE_IO_BASE(nasid) + (UINT64_CAST(widget) << SWIN_SIZE_BITS))
75 
76 #define WIDGETID_GET(addr)	((unsigned char)((addr >> SWIN_SIZE_BITS) & 0xff))
77 
78 /*
79  * The following definitions pertain to the IO special address
80  * space.  They define the location of the big and little windows
81  * of any given node.
82  */
83 
84 #define SWIN_SIZE_BITS		24
85 #define SWIN_SIZE		(UINT64_CAST 1 << 24)
86 #define SWIN_SIZEMASK		(SWIN_SIZE - 1)
87 #define SWIN_WIDGET_MASK	0xF
88 
89 /*
90  * Convert smallwindow address to xtalk address.
91  *
92  * 'addr' can be physical or virtual address, but will be converted
93  * to Xtalk address in the range 0 -> SWINZ_SIZEMASK
94  */
95 #define SWIN_WIDGETADDR(addr)	((addr) & SWIN_SIZEMASK)
96 #define SWIN_WIDGETNUM(addr)	(((addr)  >> SWIN_SIZE_BITS) & SWIN_WIDGET_MASK)
97 /*
98  * Verify if addr belongs to small window address on node with "nasid"
99  *
100  *
101  * NOTE: "addr" is expected to be XKPHYS address, and NOT physical
102  * address
103  *
104  *
105  */
106 #define NODE_SWIN_ADDR(nasid, addr)	\
107 		(((addr) >= NODE_SWIN_BASE(nasid, 0))  && \
108 		 ((addr) <  (NODE_SWIN_BASE(nasid, HUB_NUM_WIDGET) + SWIN_SIZE)\
109 		 ))
110 
111 /*
112  * The following define the major position-independent aliases used
113  * in SN.
114  *	UALIAS -- 256MB in size, reads in the UALIAS result in
115  *			uncached references to the memory of the reader's node.
116  *	CPU_UALIAS -- 128kb in size, the bottom part of UALIAS is flipped
117  *			depending on which CPU does the access to provide
118  *			all CPUs with unique uncached memory at low addresses.
119  *	LBOOT  -- 256MB in size, reads in the LBOOT area result in
120  *			uncached references to the local hub's boot prom and
121  *			other directory-bus connected devices.
122  *	IALIAS -- 8MB in size, reads in the IALIAS result in uncached
123  *			references to the local hub's registers.
124  */
125 
126 #define UALIAS_BASE		HSPEC_BASE
127 #define UALIAS_SIZE		0x10000000	/* 256 Megabytes */
128 #define UALIAS_LIMIT		(UALIAS_BASE + UALIAS_SIZE)
129 
130 /*
131  * The bottom of ualias space is flipped depending on whether you're
132  * processor 0 or 1 within a node.
133  */
134 #ifdef CONFIG_SGI_IP27
135 #define UALIAS_FLIP_BASE	UALIAS_BASE
136 #define UALIAS_FLIP_SIZE	0x20000
137 #define UALIAS_FLIP_BIT		0x10000
138 #define UALIAS_FLIP_ADDR(_x)	(cputoslice(smp_processor_id()) ? \
139 				 (_x) ^ UALIAS_FLIP_BIT : (_x))
140 
141 #define LBOOT_BASE		(HSPEC_BASE + 0x10000000)
142 #define LBOOT_SIZE		0x10000000
143 #define LBOOT_LIMIT		(LBOOT_BASE + LBOOT_SIZE)
144 #define LBOOT_STRIDE		0		/* IP27 has only one CPU PROM */
145 
146 #endif
147 
148 #define HUB_REGISTER_WIDGET	1
149 #define IALIAS_BASE		NODE_SWIN_BASE(0, HUB_REGISTER_WIDGET)
150 #define IALIAS_SIZE		0x800000	/* 8 Megabytes */
151 #define IS_IALIAS(_a)		(((_a) >= IALIAS_BASE) &&		\
152 				 ((_a) < (IALIAS_BASE + IALIAS_SIZE)))
153 
154 /*
155  * Macro for referring to Hub's RBOOT space
156  */
157 
158 #ifdef CONFIG_SGI_IP27
159 #define RBOOT_SIZE		0x10000000	/* 256 Megabytes */
160 #define NODE_RBOOT_BASE(_n)	(NODE_HSPEC_BASE(_n) + 0x30000000)
161 #define NODE_RBOOT_LIMIT(_n)	(NODE_RBOOT_BASE(_n) + RBOOT_SIZE)
162 
163 #endif
164 
165 /*
166  * Macros for referring the Hub's back door space
167  *
168  *   These macros correctly process addresses in any node's space.
169  *   WARNING: They won't work in assembler.
170  *
171  *   BDDIR_ENTRY_LO returns the address of the low double-word of the dir
172  *		    entry corresponding to a physical (Cac or Uncac) address.
173  *   BDDIR_ENTRY_HI returns the address of the high double-word of the entry.
174  *   BDPRT_ENTRY    returns the address of the double-word protection entry
175  *		    corresponding to the page containing the physical address.
176  *   BDPRT_ENTRY_S  Stores the value into the protection entry.
177  *   BDPRT_ENTRY_L  Load the value from the protection entry.
178  *   BDECC_ENTRY    returns the address of the ECC byte corresponding to a
179  *		    double-word at a specified physical address.
180  *   BDECC_ENTRY_H  returns the address of the two ECC bytes corresponding to a
181  *		    quad-word at a specified physical address.
182  */
183 #define NODE_BDOOR_BASE(_n)	(NODE_HSPEC_BASE(_n) + (NODE_ADDRSPACE_SIZE/2))
184 
185 #define NODE_BDECC_BASE(_n)	(NODE_BDOOR_BASE(_n))
186 #define NODE_BDDIR_BASE(_n)	(NODE_BDOOR_BASE(_n) + (NODE_ADDRSPACE_SIZE/4))
187 #ifdef CONFIG_SGI_IP27
188 #define BDDIR_ENTRY_LO(_pa)	((HSPEC_BASE +				      \
189 				  NODE_ADDRSPACE_SIZE * 3 / 4 +		      \
190 				  0x200)				    | \
191 				 UINT64_CAST(_pa)	 & NASID_MASK	    | \
192 				 UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK  | \
193 				 UINT64_CAST(_pa) >> 3 & 0x1f << 4)
194 
195 #define BDDIR_ENTRY_HI(_pa)	((HSPEC_BASE +				      \
196 				  NODE_ADDRSPACE_SIZE * 3 / 4 +		      \
197 				  0x208)				    | \
198 				 UINT64_CAST(_pa)	 & NASID_MASK	    | \
199 				 UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK  | \
200 				 UINT64_CAST(_pa) >> 3 & 0x1f << 4)
201 
202 #define BDPRT_ENTRY(_pa, _rgn)	((HSPEC_BASE +				      \
203 				  NODE_ADDRSPACE_SIZE * 3 / 4)		    | \
204 				 UINT64_CAST(_pa)	 & NASID_MASK	    | \
205 				 UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK  | \
206 				 (_rgn) << 3)
207 #define BDPRT_ENTRY_ADDR(_pa, _rgn) (BDPRT_ENTRY((_pa), (_rgn)))
208 #define BDPRT_ENTRY_S(_pa, _rgn, _val) (*(__psunsigned_t *)BDPRT_ENTRY((_pa), (_rgn))=(_val))
209 #define BDPRT_ENTRY_L(_pa, _rgn)	(*(__psunsigned_t *)BDPRT_ENTRY((_pa), (_rgn)))
210 
211 #define BDECC_ENTRY(_pa)	((HSPEC_BASE +				      \
212 				  NODE_ADDRSPACE_SIZE / 2)		    | \
213 				 UINT64_CAST(_pa)	 & NASID_MASK	    | \
214 				 UINT64_CAST(_pa) >> 2 & BDECC_UPPER_MASK  | \
215 				 UINT64_CAST(_pa) >> 3 & 3)
216 
217 /*
218  * Macro to convert a back door directory or protection address into the
219  *   raw physical address of the associated cache line or protection page.
220  */
221 #define BDADDR_IS_DIR(_ba)	((UINT64_CAST  (_ba) & 0x200) != 0)
222 #define BDADDR_IS_PRT(_ba)	((UINT64_CAST  (_ba) & 0x200) == 0)
223 
224 #define BDDIR_TO_MEM(_ba)	(UINT64_CAST (_ba) & NASID_MASK		   | \
225 				 (UINT64_CAST(_ba) & BDDIR_UPPER_MASK)<<2  | \
226 				 (UINT64_CAST(_ba) & 0x1f << 4) << 3)
227 
228 #define BDPRT_TO_MEM(_ba)	(UINT64_CAST (_ba) & NASID_MASK	    | \
229 				 (UINT64_CAST(_ba) & BDDIR_UPPER_MASK)<<2)
230 
231 #define BDECC_TO_MEM(_ba)	(UINT64_CAST (_ba) & NASID_MASK	    | \
232 				 (UINT64_CAST(_ba) & BDECC_UPPER_MASK)<<2  | \
233 				 (UINT64_CAST(_ba) & 3) << 3)
234 #endif /* CONFIG_SGI_IP27 */
235 
236 
237 /*
238  * The following macros produce the correct base virtual address for
239  * the hub registers.  The LOCAL_HUB_* macros produce the appropriate
240  * address for the local registers.  The REMOTE_HUB_* macro produce
241  * the address for the specified hub's registers.  The intent is
242  * that the appropriate PI, MD, NI, or II register would be substituted
243  * for _x.
244  */
245 
246 /*
247  * WARNING:
248  *	When certain Hub chip workaround are defined, it's not sufficient
249  *	to dereference the *_HUB_ADDR() macros.	 You should instead use
250  *	HUB_L() and HUB_S() if you must deal with pointers to hub registers.
251  *	Otherwise, the recommended approach is to use *_HUB_L() and *_HUB_S().
252  *	They're always safe.
253  */
254 #define LOCAL_HUB_ADDR(_x)	(IALIAS_BASE + (_x))
255 #define REMOTE_HUB_ADDR(_n, _x) ((NODE_SWIN_BASE(_n, 1) + 0x800000 + (_x)))
256 
257 #ifndef __ASSEMBLY__
258 
259 #define LOCAL_HUB_PTR(_x)	((u64 *)LOCAL_HUB_ADDR((_x)))
260 #define REMOTE_HUB_PTR(_n, _x)	((u64 *)REMOTE_HUB_ADDR((_n), (_x)))
261 
262 #define LOCAL_HUB_L(_r)			__raw_readq(LOCAL_HUB_PTR(_r))
263 #define LOCAL_HUB_S(_r, _d)		__raw_writeq((_d), LOCAL_HUB_PTR(_r))
264 #define REMOTE_HUB_L(_n, _r)		__raw_readq(REMOTE_HUB_PTR((_n), (_r)))
265 #define REMOTE_HUB_S(_n, _r, _d)	__raw_writeq((_d),		\
266 						REMOTE_HUB_PTR((_n), (_r)))
267 
268 #endif /* !__ASSEMBLY__ */
269 
270 /*
271  * Software structure locations -- permanently fixed
272  *    See diagram in kldir.h
273  */
274 
275 #define PHYS_RAMBASE		0x0
276 #define K0_RAMBASE		PHYS_TO_K0(PHYS_RAMBASE)
277 
278 #define EX_HANDLER_OFFSET(slice) ((slice) << 16)
279 #define EX_HANDLER_ADDR(nasid, slice)					\
280 	PHYS_TO_K0(NODE_OFFSET(nasid) | EX_HANDLER_OFFSET(slice))
281 #define EX_HANDLER_SIZE		0x0400
282 
283 #define EX_FRAME_OFFSET(slice)	((slice) << 16 | 0x400)
284 #define EX_FRAME_ADDR(nasid, slice)					\
285 	PHYS_TO_K0(NODE_OFFSET(nasid) | EX_FRAME_OFFSET(slice))
286 #define EX_FRAME_SIZE		0x0c00
287 
288 #define ARCS_SPB_OFFSET		0x1000
289 #define ARCS_SPB_ADDR(nasid)						\
290 	PHYS_TO_K0(NODE_OFFSET(nasid) | ARCS_SPB_OFFSET)
291 #define ARCS_SPB_SIZE		0x0400
292 
293 #define KLDIR_OFFSET		0x2000
294 #define KLDIR_ADDR(nasid)						\
295 	TO_NODE_UNCAC((nasid), KLDIR_OFFSET)
296 #define KLDIR_SIZE		0x0400
297 
298 
299 /*
300  * Software structure locations -- indirected through KLDIR
301  *    See diagram in kldir.h
302  *
303  * Important:	All low memory structures must only be accessed
304  *		uncached, except for the symmon stacks.
305  */
306 
307 #define KLI_LAUNCH		0		/* Dir. entries */
308 #define KLI_KLCONFIG		1
309 #define KLI_NMI			2
310 #define KLI_GDA			3
311 #define KLI_FREEMEM		4
312 #define KLI_SYMMON_STK		5
313 #define KLI_PI_ERROR		6
314 #define KLI_KERN_VARS		7
315 #define KLI_KERN_XP		8
316 #define KLI_KERN_PARTID		9
317 
318 #ifndef __ASSEMBLY__
319 
320 #define KLD_BASE(nasid)		((kldir_ent_t *) KLDIR_ADDR(nasid))
321 #define KLD_LAUNCH(nasid)	(KLD_BASE(nasid) + KLI_LAUNCH)
322 #define KLD_NMI(nasid)		(KLD_BASE(nasid) + KLI_NMI)
323 #define KLD_KLCONFIG(nasid)	(KLD_BASE(nasid) + KLI_KLCONFIG)
324 #define KLD_PI_ERROR(nasid)	(KLD_BASE(nasid) + KLI_PI_ERROR)
325 #define KLD_GDA(nasid)		(KLD_BASE(nasid) + KLI_GDA)
326 #define KLD_SYMMON_STK(nasid)	(KLD_BASE(nasid) + KLI_SYMMON_STK)
327 #define KLD_FREEMEM(nasid)	(KLD_BASE(nasid) + KLI_FREEMEM)
328 #define KLD_KERN_VARS(nasid)	(KLD_BASE(nasid) + KLI_KERN_VARS)
329 #define KLD_KERN_XP(nasid)	(KLD_BASE(nasid) + KLI_KERN_XP)
330 #define KLD_KERN_PARTID(nasid)	(KLD_BASE(nasid) + KLI_KERN_PARTID)
331 
332 #define LAUNCH_OFFSET(nasid, slice)					\
333 	(KLD_LAUNCH(nasid)->offset +					\
334 	 KLD_LAUNCH(nasid)->stride * (slice))
335 #define LAUNCH_ADDR(nasid, slice)					\
336 	TO_NODE_UNCAC((nasid), LAUNCH_OFFSET(nasid, slice))
337 #define LAUNCH_SIZE(nasid)	KLD_LAUNCH(nasid)->size
338 
339 #define SN_NMI_OFFSET(nasid, slice)					\
340 	(KLD_NMI(nasid)->offset +					\
341 	 KLD_NMI(nasid)->stride * (slice))
342 #define NMI_ADDR(nasid, slice)						\
343 	TO_NODE_UNCAC((nasid), SN_NMI_OFFSET(nasid, slice))
344 #define NMI_SIZE(nasid) KLD_NMI(nasid)->size
345 
346 #define KLCONFIG_OFFSET(nasid)	KLD_KLCONFIG(nasid)->offset
347 #define KLCONFIG_ADDR(nasid)						\
348 	TO_NODE_UNCAC((nasid), KLCONFIG_OFFSET(nasid))
349 #define KLCONFIG_SIZE(nasid)	KLD_KLCONFIG(nasid)->size
350 
351 #define GDA_ADDR(nasid)		KLD_GDA(nasid)->pointer
352 #define GDA_SIZE(nasid)		KLD_GDA(nasid)->size
353 
354 #define SYMMON_STK_OFFSET(nasid, slice)					\
355 	(KLD_SYMMON_STK(nasid)->offset +				\
356 	 KLD_SYMMON_STK(nasid)->stride * (slice))
357 #define SYMMON_STK_STRIDE(nasid)	KLD_SYMMON_STK(nasid)->stride
358 
359 #define SYMMON_STK_ADDR(nasid, slice)					\
360 	TO_NODE_CAC((nasid), SYMMON_STK_OFFSET(nasid, slice))
361 
362 #define SYMMON_STK_SIZE(nasid)	KLD_SYMMON_STK(nasid)->stride
363 
364 #define SYMMON_STK_END(nasid)	(SYMMON_STK_ADDR(nasid, 0) + KLD_SYMMON_STK(nasid)->size)
365 
366 #define NODE_OFFSET_TO_K0(_nasid, _off)					\
367 	PHYS_TO_K0((NODE_OFFSET(_nasid) + (_off)) | CAC_BASE)
368 #define NODE_OFFSET_TO_K1(_nasid, _off)					\
369 	TO_UNCAC((NODE_OFFSET(_nasid) + (_off)) | UNCAC_BASE)
370 
371 #define KERN_VARS_ADDR(nasid)	KLD_KERN_VARS(nasid)->pointer
372 #define KERN_VARS_SIZE(nasid)	KLD_KERN_VARS(nasid)->size
373 
374 #endif /* !__ASSEMBLY__ */
375 
376 
377 #endif /* _ASM_SN_ADDRS_H */
378