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952cf6d7 JS |
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 | * SGI UV architectural definitions | |
7 | * | |
9f5314fb | 8 | * Copyright (C) 2007-2008 Silicon Graphics, Inc. All rights reserved. |
952cf6d7 JS |
9 | */ |
10 | ||
05e4d316 PA |
11 | #ifndef _ASM_X86_UV_UV_HUB_H |
12 | #define _ASM_X86_UV_UV_HUB_H | |
952cf6d7 JS |
13 | |
14 | #include <linux/numa.h> | |
15 | #include <linux/percpu.h> | |
c08b6acc | 16 | #include <linux/timer.h> |
952cf6d7 JS |
17 | #include <asm/types.h> |
18 | #include <asm/percpu.h> | |
19 | ||
20 | ||
21 | /* | |
22 | * Addressing Terminology | |
23 | * | |
9f5314fb JS |
24 | * M - The low M bits of a physical address represent the offset |
25 | * into the blade local memory. RAM memory on a blade is physically | |
26 | * contiguous (although various IO spaces may punch holes in | |
27 | * it).. | |
952cf6d7 | 28 | * |
9f5314fb JS |
29 | * N - Number of bits in the node portion of a socket physical |
30 | * address. | |
31 | * | |
32 | * NASID - network ID of a router, Mbrick or Cbrick. Nasid values of | |
33 | * routers always have low bit of 1, C/MBricks have low bit | |
34 | * equal to 0. Most addressing macros that target UV hub chips | |
35 | * right shift the NASID by 1 to exclude the always-zero bit. | |
36 | * NASIDs contain up to 15 bits. | |
37 | * | |
38 | * GNODE - NASID right shifted by 1 bit. Most mmrs contain gnodes instead | |
39 | * of nasids. | |
40 | * | |
41 | * PNODE - the low N bits of the GNODE. The PNODE is the most useful variant | |
42 | * of the nasid for socket usage. | |
43 | * | |
44 | * | |
45 | * NumaLink Global Physical Address Format: | |
46 | * +--------------------------------+---------------------+ | |
47 | * |00..000| GNODE | NodeOffset | | |
48 | * +--------------------------------+---------------------+ | |
49 | * |<-------53 - M bits --->|<--------M bits -----> | |
50 | * | |
51 | * M - number of node offset bits (35 .. 40) | |
952cf6d7 JS |
52 | * |
53 | * | |
54 | * Memory/UV-HUB Processor Socket Address Format: | |
9f5314fb JS |
55 | * +----------------+---------------+---------------------+ |
56 | * |00..000000000000| PNODE | NodeOffset | | |
57 | * +----------------+---------------+---------------------+ | |
58 | * <--- N bits --->|<--------M bits -----> | |
952cf6d7 | 59 | * |
9f5314fb JS |
60 | * M - number of node offset bits (35 .. 40) |
61 | * N - number of PNODE bits (0 .. 10) | |
952cf6d7 JS |
62 | * |
63 | * Note: M + N cannot currently exceed 44 (x86_64) or 46 (IA64). | |
64 | * The actual values are configuration dependent and are set at | |
9f5314fb JS |
65 | * boot time. M & N values are set by the hardware/BIOS at boot. |
66 | * | |
952cf6d7 JS |
67 | * |
68 | * APICID format | |
69 | * NOTE!!!!!! This is the current format of the APICID. However, code | |
70 | * should assume that this will change in the future. Use functions | |
71 | * in this file for all APICID bit manipulations and conversion. | |
72 | * | |
73 | * 1111110000000000 | |
74 | * 5432109876543210 | |
9f5314fb | 75 | * pppppppppplc0cch |
952cf6d7 JS |
76 | * sssssssssss |
77 | * | |
9f5314fb | 78 | * p = pnode bits |
952cf6d7 JS |
79 | * l = socket number on board |
80 | * c = core | |
81 | * h = hyperthread | |
9f5314fb | 82 | * s = bits that are in the SOCKET_ID CSR |
952cf6d7 JS |
83 | * |
84 | * Note: Processor only supports 12 bits in the APICID register. The ACPI | |
85 | * tables hold all 16 bits. Software needs to be aware of this. | |
86 | * | |
87 | * Unless otherwise specified, all references to APICID refer to | |
88 | * the FULL value contained in ACPI tables, not the subset in the | |
89 | * processor APICID register. | |
90 | */ | |
91 | ||
92 | ||
93 | /* | |
94 | * Maximum number of bricks in all partitions and in all coherency domains. | |
95 | * This is the total number of bricks accessible in the numalink fabric. It | |
96 | * includes all C & M bricks. Routers are NOT included. | |
97 | * | |
98 | * This value is also the value of the maximum number of non-router NASIDs | |
99 | * in the numalink fabric. | |
100 | * | |
9f5314fb | 101 | * NOTE: a brick may contain 1 or 2 OS nodes. Don't get these confused. |
952cf6d7 JS |
102 | */ |
103 | #define UV_MAX_NUMALINK_BLADES 16384 | |
104 | ||
105 | /* | |
106 | * Maximum number of C/Mbricks within a software SSI (hardware may support | |
107 | * more). | |
108 | */ | |
109 | #define UV_MAX_SSI_BLADES 256 | |
110 | ||
111 | /* | |
112 | * The largest possible NASID of a C or M brick (+ 2) | |
113 | */ | |
114 | #define UV_MAX_NASID_VALUE (UV_MAX_NUMALINK_NODES * 2) | |
115 | ||
7f1baa06 MT |
116 | struct uv_scir_s { |
117 | struct timer_list timer; | |
118 | unsigned long offset; | |
119 | unsigned long last; | |
120 | unsigned long idle_on; | |
121 | unsigned long idle_off; | |
122 | unsigned char state; | |
123 | unsigned char enabled; | |
124 | }; | |
125 | ||
952cf6d7 JS |
126 | /* |
127 | * The following defines attributes of the HUB chip. These attributes are | |
128 | * frequently referenced and are kept in the per-cpu data areas of each cpu. | |
129 | * They are kept together in a struct to minimize cache misses. | |
130 | */ | |
131 | struct uv_hub_info_s { | |
69a72a0e MT |
132 | unsigned long global_mmr_base; |
133 | unsigned long gpa_mask; | |
134 | unsigned long gnode_upper; | |
135 | unsigned long lowmem_remap_top; | |
136 | unsigned long lowmem_remap_base; | |
137 | unsigned short pnode; | |
138 | unsigned short pnode_mask; | |
139 | unsigned short coherency_domain_number; | |
140 | unsigned short numa_blade_id; | |
141 | unsigned char blade_processor_id; | |
142 | unsigned char m_val; | |
143 | unsigned char n_val; | |
144 | struct uv_scir_s scir; | |
952cf6d7 | 145 | }; |
7f1baa06 | 146 | |
952cf6d7 JS |
147 | DECLARE_PER_CPU(struct uv_hub_info_s, __uv_hub_info); |
148 | #define uv_hub_info (&__get_cpu_var(__uv_hub_info)) | |
149 | #define uv_cpu_hub_info(cpu) (&per_cpu(__uv_hub_info, cpu)) | |
150 | ||
151 | /* | |
152 | * Local & Global MMR space macros. | |
153 | * Note: macros are intended to be used ONLY by inline functions | |
154 | * in this file - not by other kernel code. | |
9f5314fb JS |
155 | * n - NASID (full 15-bit global nasid) |
156 | * g - GNODE (full 15-bit global nasid, right shifted 1) | |
157 | * p - PNODE (local part of nsids, right shifted 1) | |
952cf6d7 | 158 | */ |
9f5314fb JS |
159 | #define UV_NASID_TO_PNODE(n) (((n) >> 1) & uv_hub_info->pnode_mask) |
160 | #define UV_PNODE_TO_NASID(p) (((p) << 1) | uv_hub_info->gnode_upper) | |
952cf6d7 JS |
161 | |
162 | #define UV_LOCAL_MMR_BASE 0xf4000000UL | |
163 | #define UV_GLOBAL_MMR32_BASE 0xf8000000UL | |
164 | #define UV_GLOBAL_MMR64_BASE (uv_hub_info->global_mmr_base) | |
83f5d894 JS |
165 | #define UV_LOCAL_MMR_SIZE (64UL * 1024 * 1024) |
166 | #define UV_GLOBAL_MMR32_SIZE (64UL * 1024 * 1024) | |
952cf6d7 | 167 | |
9f5314fb JS |
168 | #define UV_GLOBAL_MMR32_PNODE_SHIFT 15 |
169 | #define UV_GLOBAL_MMR64_PNODE_SHIFT 26 | |
952cf6d7 | 170 | |
9f5314fb | 171 | #define UV_GLOBAL_MMR32_PNODE_BITS(p) ((p) << (UV_GLOBAL_MMR32_PNODE_SHIFT)) |
952cf6d7 | 172 | |
9f5314fb JS |
173 | #define UV_GLOBAL_MMR64_PNODE_BITS(p) \ |
174 | ((unsigned long)(p) << UV_GLOBAL_MMR64_PNODE_SHIFT) | |
175 | ||
176 | #define UV_APIC_PNODE_SHIFT 6 | |
177 | ||
7f1baa06 MT |
178 | /* Local Bus from cpu's perspective */ |
179 | #define LOCAL_BUS_BASE 0x1c00000 | |
180 | #define LOCAL_BUS_SIZE (4 * 1024 * 1024) | |
181 | ||
182 | /* | |
183 | * System Controller Interface Reg | |
184 | * | |
185 | * Note there are NO leds on a UV system. This register is only | |
186 | * used by the system controller to monitor system-wide operation. | |
187 | * There are 64 regs per node. With Nahelem cpus (2 cores per node, | |
188 | * 8 cpus per core, 2 threads per cpu) there are 32 cpu threads on | |
189 | * a node. | |
190 | * | |
191 | * The window is located at top of ACPI MMR space | |
192 | */ | |
193 | #define SCIR_WINDOW_COUNT 64 | |
194 | #define SCIR_LOCAL_MMR_BASE (LOCAL_BUS_BASE + \ | |
195 | LOCAL_BUS_SIZE - \ | |
196 | SCIR_WINDOW_COUNT) | |
197 | ||
198 | #define SCIR_CPU_HEARTBEAT 0x01 /* timer interrupt */ | |
199 | #define SCIR_CPU_ACTIVITY 0x02 /* not idle */ | |
200 | #define SCIR_CPU_HB_INTERVAL (HZ) /* once per second */ | |
201 | ||
9f5314fb JS |
202 | /* |
203 | * Macros for converting between kernel virtual addresses, socket local physical | |
204 | * addresses, and UV global physical addresses. | |
205 | * Note: use the standard __pa() & __va() macros for converting | |
206 | * between socket virtual and socket physical addresses. | |
207 | */ | |
208 | ||
209 | /* socket phys RAM --> UV global physical address */ | |
210 | static inline unsigned long uv_soc_phys_ram_to_gpa(unsigned long paddr) | |
211 | { | |
212 | if (paddr < uv_hub_info->lowmem_remap_top) | |
189f67c4 | 213 | paddr |= uv_hub_info->lowmem_remap_base; |
9f5314fb JS |
214 | return paddr | uv_hub_info->gnode_upper; |
215 | } | |
216 | ||
217 | ||
218 | /* socket virtual --> UV global physical address */ | |
219 | static inline unsigned long uv_gpa(void *v) | |
220 | { | |
189f67c4 | 221 | return uv_soc_phys_ram_to_gpa(__pa(v)); |
9f5314fb JS |
222 | } |
223 | ||
224 | /* pnode, offset --> socket virtual */ | |
225 | static inline void *uv_pnode_offset_to_vaddr(int pnode, unsigned long offset) | |
226 | { | |
227 | return __va(((unsigned long)pnode << uv_hub_info->m_val) | offset); | |
228 | } | |
952cf6d7 | 229 | |
952cf6d7 JS |
230 | |
231 | /* | |
9f5314fb | 232 | * Extract a PNODE from an APICID (full apicid, not processor subset) |
952cf6d7 | 233 | */ |
9f5314fb | 234 | static inline int uv_apicid_to_pnode(int apicid) |
952cf6d7 | 235 | { |
9f5314fb | 236 | return (apicid >> UV_APIC_PNODE_SHIFT); |
952cf6d7 JS |
237 | } |
238 | ||
239 | /* | |
240 | * Access global MMRs using the low memory MMR32 space. This region supports | |
241 | * faster MMR access but not all MMRs are accessible in this space. | |
242 | */ | |
9f5314fb | 243 | static inline unsigned long *uv_global_mmr32_address(int pnode, |
952cf6d7 JS |
244 | unsigned long offset) |
245 | { | |
246 | return __va(UV_GLOBAL_MMR32_BASE | | |
9f5314fb | 247 | UV_GLOBAL_MMR32_PNODE_BITS(pnode) | offset); |
952cf6d7 JS |
248 | } |
249 | ||
9f5314fb | 250 | static inline void uv_write_global_mmr32(int pnode, unsigned long offset, |
952cf6d7 JS |
251 | unsigned long val) |
252 | { | |
9f5314fb | 253 | *uv_global_mmr32_address(pnode, offset) = val; |
952cf6d7 JS |
254 | } |
255 | ||
9f5314fb | 256 | static inline unsigned long uv_read_global_mmr32(int pnode, |
952cf6d7 JS |
257 | unsigned long offset) |
258 | { | |
9f5314fb | 259 | return *uv_global_mmr32_address(pnode, offset); |
952cf6d7 JS |
260 | } |
261 | ||
262 | /* | |
263 | * Access Global MMR space using the MMR space located at the top of physical | |
264 | * memory. | |
265 | */ | |
9f5314fb | 266 | static inline unsigned long *uv_global_mmr64_address(int pnode, |
952cf6d7 JS |
267 | unsigned long offset) |
268 | { | |
269 | return __va(UV_GLOBAL_MMR64_BASE | | |
9f5314fb | 270 | UV_GLOBAL_MMR64_PNODE_BITS(pnode) | offset); |
952cf6d7 JS |
271 | } |
272 | ||
9f5314fb | 273 | static inline void uv_write_global_mmr64(int pnode, unsigned long offset, |
952cf6d7 JS |
274 | unsigned long val) |
275 | { | |
9f5314fb | 276 | *uv_global_mmr64_address(pnode, offset) = val; |
952cf6d7 JS |
277 | } |
278 | ||
9f5314fb | 279 | static inline unsigned long uv_read_global_mmr64(int pnode, |
952cf6d7 JS |
280 | unsigned long offset) |
281 | { | |
9f5314fb | 282 | return *uv_global_mmr64_address(pnode, offset); |
952cf6d7 JS |
283 | } |
284 | ||
285 | /* | |
9f5314fb | 286 | * Access hub local MMRs. Faster than using global space but only local MMRs |
952cf6d7 JS |
287 | * are accessible. |
288 | */ | |
289 | static inline unsigned long *uv_local_mmr_address(unsigned long offset) | |
290 | { | |
291 | return __va(UV_LOCAL_MMR_BASE | offset); | |
292 | } | |
293 | ||
294 | static inline unsigned long uv_read_local_mmr(unsigned long offset) | |
295 | { | |
296 | return *uv_local_mmr_address(offset); | |
297 | } | |
298 | ||
299 | static inline void uv_write_local_mmr(unsigned long offset, unsigned long val) | |
300 | { | |
301 | *uv_local_mmr_address(offset) = val; | |
302 | } | |
303 | ||
7f1baa06 MT |
304 | static inline unsigned char uv_read_local_mmr8(unsigned long offset) |
305 | { | |
306 | return *((unsigned char *)uv_local_mmr_address(offset)); | |
307 | } | |
308 | ||
309 | static inline void uv_write_local_mmr8(unsigned long offset, unsigned char val) | |
310 | { | |
311 | *((unsigned char *)uv_local_mmr_address(offset)) = val; | |
312 | } | |
313 | ||
8400def8 | 314 | /* |
9f5314fb | 315 | * Structures and definitions for converting between cpu, node, pnode, and blade |
8400def8 JS |
316 | * numbers. |
317 | */ | |
318 | struct uv_blade_info { | |
9f5314fb | 319 | unsigned short nr_possible_cpus; |
8400def8 | 320 | unsigned short nr_online_cpus; |
9f5314fb | 321 | unsigned short pnode; |
8400def8 | 322 | }; |
9f5314fb | 323 | extern struct uv_blade_info *uv_blade_info; |
8400def8 JS |
324 | extern short *uv_node_to_blade; |
325 | extern short *uv_cpu_to_blade; | |
326 | extern short uv_possible_blades; | |
327 | ||
328 | /* Blade-local cpu number of current cpu. Numbered 0 .. <# cpus on the blade> */ | |
329 | static inline int uv_blade_processor_id(void) | |
330 | { | |
331 | return uv_hub_info->blade_processor_id; | |
332 | } | |
333 | ||
334 | /* Blade number of current cpu. Numnbered 0 .. <#blades -1> */ | |
335 | static inline int uv_numa_blade_id(void) | |
336 | { | |
337 | return uv_hub_info->numa_blade_id; | |
338 | } | |
339 | ||
340 | /* Convert a cpu number to the the UV blade number */ | |
341 | static inline int uv_cpu_to_blade_id(int cpu) | |
342 | { | |
343 | return uv_cpu_to_blade[cpu]; | |
344 | } | |
345 | ||
346 | /* Convert linux node number to the UV blade number */ | |
347 | static inline int uv_node_to_blade_id(int nid) | |
348 | { | |
349 | return uv_node_to_blade[nid]; | |
350 | } | |
351 | ||
9f5314fb JS |
352 | /* Convert a blade id to the PNODE of the blade */ |
353 | static inline int uv_blade_to_pnode(int bid) | |
8400def8 | 354 | { |
9f5314fb | 355 | return uv_blade_info[bid].pnode; |
8400def8 JS |
356 | } |
357 | ||
358 | /* Determine the number of possible cpus on a blade */ | |
359 | static inline int uv_blade_nr_possible_cpus(int bid) | |
360 | { | |
9f5314fb | 361 | return uv_blade_info[bid].nr_possible_cpus; |
8400def8 JS |
362 | } |
363 | ||
364 | /* Determine the number of online cpus on a blade */ | |
365 | static inline int uv_blade_nr_online_cpus(int bid) | |
366 | { | |
367 | return uv_blade_info[bid].nr_online_cpus; | |
368 | } | |
369 | ||
9f5314fb JS |
370 | /* Convert a cpu id to the PNODE of the blade containing the cpu */ |
371 | static inline int uv_cpu_to_pnode(int cpu) | |
8400def8 | 372 | { |
9f5314fb | 373 | return uv_blade_info[uv_cpu_to_blade_id(cpu)].pnode; |
8400def8 JS |
374 | } |
375 | ||
9f5314fb JS |
376 | /* Convert a linux node number to the PNODE of the blade */ |
377 | static inline int uv_node_to_pnode(int nid) | |
8400def8 | 378 | { |
9f5314fb | 379 | return uv_blade_info[uv_node_to_blade_id(nid)].pnode; |
8400def8 JS |
380 | } |
381 | ||
382 | /* Maximum possible number of blades */ | |
383 | static inline int uv_num_possible_blades(void) | |
384 | { | |
385 | return uv_possible_blades; | |
386 | } | |
387 | ||
7f1baa06 MT |
388 | /* Update SCIR state */ |
389 | static inline void uv_set_scir_bits(unsigned char value) | |
390 | { | |
391 | if (uv_hub_info->scir.state != value) { | |
392 | uv_hub_info->scir.state = value; | |
393 | uv_write_local_mmr8(uv_hub_info->scir.offset, value); | |
394 | } | |
395 | } | |
396 | static inline void uv_set_cpu_scir_bits(int cpu, unsigned char value) | |
397 | { | |
398 | if (uv_cpu_hub_info(cpu)->scir.state != value) { | |
399 | uv_cpu_hub_info(cpu)->scir.state = value; | |
400 | uv_write_local_mmr8(uv_cpu_hub_info(cpu)->scir.offset, value); | |
401 | } | |
402 | } | |
952cf6d7 | 403 | |
7f1baa06 | 404 | #endif /* _ASM_X86_UV_UV_HUB_H */ |