1 /*
2 * Copyright (c) 1996, by Peter Wemm and Steve Passe
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. The name of the developer may NOT be used to endorse or promote products
11 * derived from this software without specific prior written permission.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD: releng/5.0/sys/i386/include/apic.h 88322 2001-12-20 23:48:31Z jhb $
26 */
27
28 #ifndef _MACHINE_APIC_H_
29 #define _MACHINE_APIC_H_
30
31 /*
32 * Local && I/O APIC definitions.
33 */
34
35 /*
36 * Pentium P54C+ Build-in APIC
37 * (Advanced programmable Interrupt Controller)
38 *
39 * Base Address of Build-in APIC in memory location
40 * is 0xfee00000.
41 *
42 * Map of APIC REgisters:
43 *
44 * Offset (hex) Description Read/Write state
45 * 000 Reserved
46 * 010 Reserved
47 * 020 ID Local APIC ID R/W
48 * 030 VER Local APIC Version R
49 * 040 Reserved
50 * 050 Reserved
51 * 060 Reserved
52 * 070 Reserved
53 * 080 Task Priority Register R/W
54 * 090 Arbitration Priority Register R
55 * 0A0 Processor Priority Register R
56 * 0B0 EOI Register W
57 * 0C0 RRR Remote read R
58 * 0D0 Logical Destination R/W
59 * 0E0 Destination Format Register 0..27 R; 28..31 R/W
60 * 0F0 SVR Spurious Interrupt Vector Reg. 0..3 R; 4..9 R/W
61 * 100 ISR 000-031 R
62 * 110 ISR 032-063 R
63 * 120 ISR 064-095 R
64 * 130 ISR 095-128 R
65 * 140 ISR 128-159 R
66 * 150 ISR 160-191 R
67 * 160 ISR 192-223 R
68 * 170 ISR 224-255 R
69 * 180 TMR 000-031 R
70 * 190 TMR 032-063 R
71 * 1A0 TMR 064-095 R
72 * 1B0 TMR 095-128 R
73 * 1C0 TMR 128-159 R
74 * 1D0 TMR 160-191 R
75 * 1E0 TMR 192-223 R
76 * 1F0 TMR 224-255 R
77 * 200 IRR 000-031 R
78 * 210 IRR 032-063 R
79 * 220 IRR 064-095 R
80 * 230 IRR 095-128 R
81 * 240 IRR 128-159 R
82 * 250 IRR 160-191 R
83 * 260 IRR 192-223 R
84 * 270 IRR 224-255 R
85 * 280 Error Status Register R
86 * 290 Reserved
87 * 2A0 Reserved
88 * 2B0 Reserved
89 * 2C0 Reserved
90 * 2D0 Reserved
91 * 2E0 Reserved
92 * 2F0 Reserved
93 * 300 ICR_LOW Interrupt Command Reg. (0-31) R/W
94 * 310 ICR_HI Interrupt Command Reg. (32-63) R/W
95 * 320 Local Vector Table (Timer) R/W
96 * 330 Reserved
97 * 340 Reserved
98 * 350 LVT1 Local Vector Table (LINT0) R/W
99 * 360 LVT2 Local Vector Table (LINT1) R/W
100 * 370 LVT3 Local Vector Table (ERROR) R/W
101 * 380 Initial Count Reg. for Timer R/W
102 * 390 Current Count of Timer R
103 * 3A0 Reserved
104 * 3B0 Reserved
105 * 3C0 Reserved
106 * 3D0 Reserved
107 * 3E0 Timer Divide Configuration Reg. R/W
108 * 3F0 Reserved
109 */
110
111
112 /******************************************************************************
113 * global defines, etc.
114 */
115
116
117 /******************************************************************************
118 * LOCAL APIC structure
119 */
120
121 #ifndef LOCORE
122 #include <sys/types.h>
123
124 #define PAD3 int : 32; int : 32; int : 32
125 #define PAD4 int : 32; int : 32; int : 32; int : 32
126
127 struct LAPIC {
128 /* reserved */ PAD4;
129 /* reserved */ PAD4;
130 u_int32_t id; PAD3;
131 u_int32_t version; PAD3;
132 /* reserved */ PAD4;
133 /* reserved */ PAD4;
134 /* reserved */ PAD4;
135 /* reserved */ PAD4;
136 u_int32_t tpr; PAD3;
137 u_int32_t apr; PAD3;
138 u_int32_t ppr; PAD3;
139 u_int32_t eoi; PAD3;
140 /* reserved */ PAD4;
141 u_int32_t ldr; PAD3;
142 u_int32_t dfr; PAD3;
143 u_int32_t svr; PAD3;
144 u_int32_t isr0; PAD3;
145 u_int32_t isr1; PAD3;
146 u_int32_t isr2; PAD3;
147 u_int32_t isr3; PAD3;
148 u_int32_t isr4; PAD3;
149 u_int32_t isr5; PAD3;
150 u_int32_t isr6; PAD3;
151 u_int32_t isr7; PAD3;
152 u_int32_t tmr0; PAD3;
153 u_int32_t tmr1; PAD3;
154 u_int32_t tmr2; PAD3;
155 u_int32_t tmr3; PAD3;
156 u_int32_t tmr4; PAD3;
157 u_int32_t tmr5; PAD3;
158 u_int32_t tmr6; PAD3;
159 u_int32_t tmr7; PAD3;
160 u_int32_t irr0; PAD3;
161 u_int32_t irr1; PAD3;
162 u_int32_t irr2; PAD3;
163 u_int32_t irr3; PAD3;
164 u_int32_t irr4; PAD3;
165 u_int32_t irr5; PAD3;
166 u_int32_t irr6; PAD3;
167 u_int32_t irr7; PAD3;
168 u_int32_t esr; PAD3;
169 /* reserved */ PAD4;
170 /* reserved */ PAD4;
171 /* reserved */ PAD4;
172 /* reserved */ PAD4;
173 /* reserved */ PAD4;
174 /* reserved */ PAD4;
175 /* reserved */ PAD4;
176 u_int32_t icr_lo; PAD3;
177 u_int32_t icr_hi; PAD3;
178 u_int32_t lvt_timer; PAD3;
179 /* reserved */ PAD4;
180 u_int32_t lvt_pcint; PAD3;
181 u_int32_t lvt_lint0; PAD3;
182 u_int32_t lvt_lint1; PAD3;
183 u_int32_t lvt_error; PAD3;
184 u_int32_t icr_timer; PAD3;
185 u_int32_t ccr_timer; PAD3;
186 /* reserved */ PAD4;
187 /* reserved */ PAD4;
188 /* reserved */ PAD4;
189 /* reserved */ PAD4;
190 u_int32_t dcr_timer; PAD3;
191 /* reserved */ PAD4;
192 };
193
194 typedef struct LAPIC lapic_t;
195
196 /******************************************************************************
197 * I/O APIC structure
198 */
199
200 struct IOAPIC {
201 u_int32_t ioregsel; PAD3;
202 u_int32_t iowin; PAD3;
203 };
204
205 typedef struct IOAPIC ioapic_t;
206
207 #undef PAD4
208 #undef PAD3
209
210 #endif /* !LOCORE */
211
212
213 /******************************************************************************
214 * various code 'logical' values
215 */
216
217 /* default level for TPR */
218 #define LOPRIO_LEVEL 0x00000010 /* TPR of CPU accepting INTs */
219
220 #ifdef GRAB_LOPRIO
221 #define ALLHWI_LEVEL 0x00000000 /* TPR of CPU grabbing INTs */
222 #endif /** GRAB_LOPRIO */
223
224 /*
225 * XXX This code assummes that the reserved field of the
226 * local APIC TPR can be written with all 0s.
227 * This saves quite a few memory accesses.
228 * If the silicon ever changes then things will break!
229 * It affects mplock.s, swtch.s, and possibly other files.
230 */
231 #define CHEAP_TPR
232
233
234 /******************************************************************************
235 * LOCAL APIC defines
236 */
237
238 /* default physical locations of LOCAL (CPU) APICs */
239 #define DEFAULT_APIC_BASE 0xfee00000
240
241 /* fields in VER */
242 #define APIC_VER_VERSION 0x000000ff
243 #define APIC_VER_MAXLVT 0x00ff0000
244 #define MAXLVTSHIFT 16
245
246 /* fields in SVR */
247 #define APIC_SVR_VECTOR 0x000000ff
248 #define APIC_SVR_VEC_PROG 0x000000f0
249 #define APIC_SVR_VEC_FIX 0x0000000f
250 #define APIC_SVR_ENABLE 0x00000100
251 # define APIC_SVR_SWDIS 0x00000000
252 # define APIC_SVR_SWEN 0x00000100
253 #define APIC_SVR_FOCUS 0x00000200
254 # define APIC_SVR_FEN 0x00000000
255 # define APIC_SVR_FDIS 0x00000200
256
257 /* fields in TPR */
258 #define APIC_TPR_PRIO 0x000000ff
259 # define APIC_TPR_INT 0x000000f0
260 # define APIC_TPR_SUB 0x0000000f
261
262
263 /* fields in ICR_LOW */
264 #define APIC_VECTOR_MASK 0x000000ff
265
266 #define APIC_DELMODE_MASK 0x00000700
267 # define APIC_DELMODE_FIXED 0x00000000
268 # define APIC_DELMODE_LOWPRIO 0x00000100
269 # define APIC_DELMODE_SMI 0x00000200
270 # define APIC_DELMODE_RR 0x00000300
271 # define APIC_DELMODE_NMI 0x00000400
272 # define APIC_DELMODE_INIT 0x00000500
273 # define APIC_DELMODE_STARTUP 0x00000600
274 # define APIC_DELMODE_RESV 0x00000700
275
276 #define APIC_DESTMODE_MASK 0x00000800
277 # define APIC_DESTMODE_PHY 0x00000000
278 # define APIC_DESTMODE_LOG 0x00000800
279
280 #define APIC_DELSTAT_MASK 0x00001000
281 # define APIC_DELSTAT_IDLE 0x00000000
282 # define APIC_DELSTAT_PEND 0x00001000
283
284 #define APIC_RESV1_MASK 0x00002000
285
286 #define APIC_LEVEL_MASK 0x00004000
287 # define APIC_LEVEL_DEASSERT 0x00000000
288 # define APIC_LEVEL_ASSERT 0x00004000
289
290 #define APIC_TRIGMOD_MASK 0x00008000
291 # define APIC_TRIGMOD_EDGE 0x00000000
292 # define APIC_TRIGMOD_LEVEL 0x00008000
293
294 #define APIC_RRSTAT_MASK 0x00030000
295 # define APIC_RRSTAT_INVALID 0x00000000
296 # define APIC_RRSTAT_INPROG 0x00010000
297 # define APIC_RRSTAT_VALID 0x00020000
298 # define APIC_RRSTAT_RESV 0x00030000
299
300 #define APIC_DEST_MASK 0x000c0000
301 # define APIC_DEST_DESTFLD 0x00000000
302 # define APIC_DEST_SELF 0x00040000
303 # define APIC_DEST_ALLISELF 0x00080000
304 # define APIC_DEST_ALLESELF 0x000c0000
305
306 #define APIC_RESV2_MASK 0xfff00000
307
308
309 /* fields in ICR_HIGH */
310 #define APIC_ID_MASK 0x0f000000
311
312
313 /* fields in LVT1/2 */
314 #define APIC_LVT_VECTOR 0x000000ff
315 #define APIC_LVT_DM 0x00000700
316 # define APIC_LVT_DM_FIXED 0x00000000
317 # define APIC_LVT_DM_NMI 0x00000400
318 # define APIC_LVT_DM_EXTINT 0x00000700
319 #define APIC_LVT_DS 0x00001000
320 #define APIC_LVT_IIPP 0x00002000
321 #define APIC_LVT_IIPP_INTALO 0x00002000
322 #define APIC_LVT_IIPP_INTAHI 0x00000000
323 #define APIC_LVT_RIRR 0x00004000
324 #define APIC_LVT_TM 0x00008000
325 #define APIC_LVT_M 0x00010000
326
327
328 /* fields in LVT Timer */
329 #define APIC_LVTT_VECTOR 0x000000ff
330 #define APIC_LVTT_DS 0x00001000
331 #define APIC_LVTT_M 0x00010000
332 #define APIC_LVTT_TM 0x00020000
333
334
335 /* fields in TDCR */
336 #define APIC_TDCR_2 0x00
337 #define APIC_TDCR_4 0x01
338 #define APIC_TDCR_8 0x02
339 #define APIC_TDCR_16 0x03
340 #define APIC_TDCR_32 0x08
341 #define APIC_TDCR_64 0x09
342 #define APIC_TDCR_128 0x0a
343 #define APIC_TDCR_1 0x0b
344
345
346 /*
347 * fields in IRR
348 * ISA INTerrupts are in bits 16-31 of the 1st IRR register.
349 * these masks DON'T EQUAL the isa IRQs of the same name.
350 */
351 #define APIC_IRQ0 0x00000001
352 #define APIC_IRQ1 0x00000002
353 #define APIC_IRQ2 0x00000004
354 #define APIC_IRQ3 0x00000008
355 #define APIC_IRQ4 0x00000010
356 #define APIC_IRQ5 0x00000020
357 #define APIC_IRQ6 0x00000040
358 #define APIC_IRQ7 0x00000080
359 #define APIC_IRQ8 0x00000100
360 #define APIC_IRQ9 0x00000200
361 #define APIC_IRQ10 0x00000400
362 #define APIC_IRQ11 0x00000800
363 #define APIC_IRQ12 0x00001000
364 #define APIC_IRQ13 0x00002000
365 #define APIC_IRQ14 0x00004000
366 #define APIC_IRQ15 0x00008000
367 #define APIC_IRQ16 0x00010000
368 #define APIC_IRQ17 0x00020000
369 #define APIC_IRQ18 0x00040000
370 #define APIC_IRQ19 0x00080000
371 #define APIC_IRQ20 0x00100000
372 #define APIC_IRQ21 0x00200000
373 #define APIC_IRQ22 0x00400000
374 #define APIC_IRQ23 0x00800000
375
376
377 /******************************************************************************
378 * I/O APIC defines
379 */
380
381 /* default physical locations of an IO APIC */
382 #define DEFAULT_IO_APIC_BASE 0xfec00000
383
384 /* window register offset */
385 #define IOAPIC_WINDOW 0x10
386
387 /* indexes into IO APIC */
388 #define IOAPIC_ID 0x00
389 #define IOAPIC_VER 0x01
390 #define IOAPIC_ARB 0x02
391 #define IOAPIC_REDTBL 0x10
392 #define IOAPIC_REDTBL0 IOAPIC_REDTBL
393 #define IOAPIC_REDTBL1 (IOAPIC_REDTBL+0x02)
394 #define IOAPIC_REDTBL2 (IOAPIC_REDTBL+0x04)
395 #define IOAPIC_REDTBL3 (IOAPIC_REDTBL+0x06)
396 #define IOAPIC_REDTBL4 (IOAPIC_REDTBL+0x08)
397 #define IOAPIC_REDTBL5 (IOAPIC_REDTBL+0x0a)
398 #define IOAPIC_REDTBL6 (IOAPIC_REDTBL+0x0c)
399 #define IOAPIC_REDTBL7 (IOAPIC_REDTBL+0x0e)
400 #define IOAPIC_REDTBL8 (IOAPIC_REDTBL+0x10)
401 #define IOAPIC_REDTBL9 (IOAPIC_REDTBL+0x12)
402 #define IOAPIC_REDTBL10 (IOAPIC_REDTBL+0x14)
403 #define IOAPIC_REDTBL11 (IOAPIC_REDTBL+0x16)
404 #define IOAPIC_REDTBL12 (IOAPIC_REDTBL+0x18)
405 #define IOAPIC_REDTBL13 (IOAPIC_REDTBL+0x1a)
406 #define IOAPIC_REDTBL14 (IOAPIC_REDTBL+0x1c)
407 #define IOAPIC_REDTBL15 (IOAPIC_REDTBL+0x1e)
408 #define IOAPIC_REDTBL16 (IOAPIC_REDTBL+0x20)
409 #define IOAPIC_REDTBL17 (IOAPIC_REDTBL+0x22)
410 #define IOAPIC_REDTBL18 (IOAPIC_REDTBL+0x24)
411 #define IOAPIC_REDTBL19 (IOAPIC_REDTBL+0x26)
412 #define IOAPIC_REDTBL20 (IOAPIC_REDTBL+0x28)
413 #define IOAPIC_REDTBL21 (IOAPIC_REDTBL+0x2a)
414 #define IOAPIC_REDTBL22 (IOAPIC_REDTBL+0x2c)
415 #define IOAPIC_REDTBL23 (IOAPIC_REDTBL+0x2e)
416
417 /* fields in VER */
418 #define IOART_VER_VERSION 0x000000ff
419 #define IOART_VER_MAXREDIR 0x00ff0000
420 #define MAXREDIRSHIFT 16
421
422 /*
423 * fields in the IO APIC's redirection table entries
424 */
425 #define IOART_DEST APIC_ID_MASK /* broadcast addr: all APICs */
426
427 #define IOART_RESV 0x00fe0000 /* reserved */
428
429 #define IOART_INTMASK 0x00010000 /* R/W: INTerrupt mask */
430 # define IOART_INTMCLR 0x00000000 /* clear, allow INTs */
431 # define IOART_INTMSET 0x00010000 /* set, inhibit INTs */
432
433 #define IOART_TRGRMOD 0x00008000 /* R/W: trigger mode */
434 # define IOART_TRGREDG 0x00000000 /* edge */
435 # define IOART_TRGRLVL 0x00008000 /* level */
436
437 #define IOART_REM_IRR 0x00004000 /* RO: remote IRR */
438
439 #define IOART_INTPOL 0x00002000 /* R/W: INT input pin polarity */
440 # define IOART_INTAHI 0x00000000 /* active high */
441 # define IOART_INTALO 0x00002000 /* active low */
442
443 #define IOART_DELIVS 0x00001000 /* RO: delivery status */
444
445 #define IOART_DESTMOD 0x00000800 /* R/W: destination mode */
446 # define IOART_DESTPHY 0x00000000 /* physical */
447 # define IOART_DESTLOG 0x00000800 /* logical */
448
449 #define IOART_DELMOD 0x00000700 /* R/W: delivery mode */
450 # define IOART_DELFIXED 0x00000000 /* fixed */
451 # define IOART_DELLOPRI 0x00000100 /* lowest priority */
452 # define IOART_DELSMI 0x00000200 /* System Management INT */
453 # define IOART_DELRSV1 0x00000300 /* reserved */
454 # define IOART_DELNMI 0x00000400 /* NMI signal */
455 # define IOART_DELINIT 0x00000500 /* INIT signal */
456 # define IOART_DELRSV2 0x00000600 /* reserved */
457 # define IOART_DELEXINT 0x00000700 /* External INTerrupt */
458
459 #define IOART_INTVEC 0x000000ff /* R/W: INTerrupt vector field */
460
461 #endif /* _MACHINE_APIC_H_ */
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