1 | /* $NetBSD: acpi_machdep.c,v 1.14 2016/10/15 16:46:14 jdolecek Exp $ */ |
2 | |
3 | /* |
4 | * Copyright 2001 Wasabi Systems, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * Written by Jason R. Thorpe for Wasabi Systems, Inc. |
8 | * |
9 | * Redistribution and use in source and binary forms, with or without |
10 | * modification, are permitted provided that the following conditions |
11 | * are met: |
12 | * 1. Redistributions of source code must retain the above copyright |
13 | * notice, this list of conditions and the following disclaimer. |
14 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * notice, this list of conditions and the following disclaimer in the |
16 | * documentation and/or other materials provided with the distribution. |
17 | * 3. All advertising materials mentioning features or use of this software |
18 | * must display the following acknowledgement: |
19 | * This product includes software developed for the NetBSD Project by |
20 | * Wasabi Systems, Inc. |
21 | * 4. The name of Wasabi Systems, Inc. may not be used to endorse |
22 | * or promote products derived from this software without specific prior |
23 | * written permission. |
24 | * |
25 | * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND |
26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
27 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
28 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC |
29 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
33 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
34 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
35 | * POSSIBILITY OF SUCH DAMAGE. |
36 | */ |
37 | |
38 | /* |
39 | * Machine-dependent routines for ACPICA. |
40 | */ |
41 | |
42 | #include <sys/cdefs.h> |
43 | __KERNEL_RCSID(0, "$NetBSD: acpi_machdep.c,v 1.14 2016/10/15 16:46:14 jdolecek Exp $" ); |
44 | |
45 | #include <sys/param.h> |
46 | #include <sys/systm.h> |
47 | #include <sys/bus.h> |
48 | #include <sys/cpu.h> |
49 | #include <sys/device.h> |
50 | |
51 | #include <uvm/uvm_extern.h> |
52 | |
53 | #include <machine/cpufunc.h> |
54 | #include <machine/bootinfo.h> |
55 | #include <machine/autoconf.h> |
56 | |
57 | #include <dev/acpi/acpica.h> |
58 | #include <dev/acpi/acpivar.h> |
59 | #include <dev/acpi/acpi_mcfg.h> |
60 | |
61 | #include <machine/acpi_machdep.h> |
62 | #include <machine/mpbiosvar.h> |
63 | #include <machine/mpacpi.h> |
64 | #include <machine/i82093reg.h> |
65 | #include <machine/i82093var.h> |
66 | #include <machine/pic.h> |
67 | |
68 | #include <x86/efi.h> |
69 | |
70 | #include <dev/pci/pcivar.h> |
71 | |
72 | #include <dev/isa/isareg.h> |
73 | #include <dev/isa/isavar.h> |
74 | |
75 | #include "ioapic.h" |
76 | |
77 | #include "acpica.h" |
78 | #include "opt_mpbios.h" |
79 | #include "opt_acpi.h" |
80 | #include "opt_vga.h" |
81 | |
82 | /* |
83 | * Default VBIOS reset method for non-HW accelerated VGA drivers. |
84 | */ |
85 | #ifdef VGA_POST |
86 | # define VBIOS_RESET_DEFAULT 2 |
87 | #else |
88 | # define VBIOS_RESET_DEFAULT 1 |
89 | #endif |
90 | |
91 | ACPI_STATUS |
92 | acpi_md_OsInitialize(void) |
93 | { |
94 | return AE_OK; |
95 | } |
96 | |
97 | ACPI_PHYSICAL_ADDRESS |
98 | acpi_md_OsGetRootPointer(void) |
99 | { |
100 | ACPI_PHYSICAL_ADDRESS PhysicalAddress; |
101 | ACPI_STATUS Status; |
102 | |
103 | #ifndef XEN |
104 | /* If EFI is available, attempt to use it to locate the ACPI table. */ |
105 | if (efi_probe()) { |
106 | PhysicalAddress = efi_getcfgtblpa(&EFI_UUID_ACPI20); |
107 | if (!PhysicalAddress) |
108 | PhysicalAddress = efi_getcfgtblpa(&EFI_UUID_ACPI10); |
109 | if (PhysicalAddress) |
110 | return PhysicalAddress; |
111 | } |
112 | |
113 | #endif |
114 | Status = AcpiFindRootPointer(&PhysicalAddress); |
115 | if (ACPI_FAILURE(Status)) |
116 | PhysicalAddress = 0; |
117 | |
118 | return PhysicalAddress; |
119 | } |
120 | |
121 | struct acpi_md_override { |
122 | int irq; |
123 | int pin; |
124 | int flags; |
125 | }; |
126 | |
127 | #if NIOAPIC > 0 |
128 | static ACPI_STATUS |
129 | acpi_md_findoverride(ACPI_SUBTABLE_HEADER *hdrp, void *aux) |
130 | { |
131 | ACPI_MADT_INTERRUPT_OVERRIDE *iop; |
132 | struct acpi_md_override *ovrp; |
133 | |
134 | if (hdrp->Type != ACPI_MADT_TYPE_INTERRUPT_OVERRIDE) { |
135 | return AE_OK; |
136 | } |
137 | |
138 | iop = (void *)hdrp; |
139 | ovrp = aux; |
140 | if (iop->SourceIrq == ovrp->irq) { |
141 | ovrp->pin = iop->GlobalIrq; |
142 | ovrp->flags = iop->IntiFlags; |
143 | } |
144 | return AE_OK; |
145 | } |
146 | #endif |
147 | |
148 | ACPI_STATUS |
149 | acpi_md_OsInstallInterruptHandler(uint32_t InterruptNumber, |
150 | ACPI_OSD_HANDLER ServiceRoutine, void *Context, void **cookiep) |
151 | { |
152 | void *ih; |
153 | struct pic *pic; |
154 | #if NIOAPIC > 0 |
155 | struct ioapic_softc *sc; |
156 | struct acpi_md_override ovr; |
157 | struct mp_intr_map tmpmap, *mip, **mipp = NULL; |
158 | #endif |
159 | int irq, pin, type, redir, mpflags; |
160 | |
161 | /* |
162 | * ACPI interrupts default to level-triggered active-low. |
163 | */ |
164 | |
165 | type = IST_LEVEL; |
166 | mpflags = (MPS_INTTR_LEVEL << 2) | MPS_INTPO_ACTLO; |
167 | redir = IOAPIC_REDLO_LEVEL | IOAPIC_REDLO_ACTLO; |
168 | |
169 | #if NIOAPIC > 0 |
170 | |
171 | /* |
172 | * Apply any MADT override setting. |
173 | */ |
174 | |
175 | ovr.irq = InterruptNumber; |
176 | ovr.pin = -1; |
177 | if (acpi_madt_map() == AE_OK) { |
178 | acpi_madt_walk(acpi_md_findoverride, &ovr); |
179 | acpi_madt_unmap(); |
180 | } else { |
181 | aprint_debug("acpi_madt_map() failed, can't check for MADT override\n" ); |
182 | } |
183 | |
184 | if (ovr.pin != -1) { |
185 | bool sci = InterruptNumber == AcpiGbl_FADT.SciInterrupt; |
186 | int polarity = ovr.flags & ACPI_MADT_POLARITY_MASK; |
187 | int trigger = ovr.flags & ACPI_MADT_TRIGGER_MASK; |
188 | |
189 | InterruptNumber = ovr.pin; |
190 | if (polarity == ACPI_MADT_POLARITY_ACTIVE_HIGH || |
191 | (!sci && polarity == ACPI_MADT_POLARITY_CONFORMS)) { |
192 | mpflags &= ~MPS_INTPO_ACTLO; |
193 | mpflags |= MPS_INTPO_ACTHI; |
194 | redir &= ~IOAPIC_REDLO_ACTLO; |
195 | } |
196 | if (trigger == ACPI_MADT_TRIGGER_EDGE || |
197 | (!sci && trigger == ACPI_MADT_TRIGGER_CONFORMS)) { |
198 | type = IST_EDGE; |
199 | mpflags &= ~(MPS_INTTR_LEVEL << 2); |
200 | mpflags |= (MPS_INTTR_EDGE << 2); |
201 | redir &= ~IOAPIC_REDLO_LEVEL; |
202 | } |
203 | } |
204 | |
205 | /* |
206 | * If the interrupt is handled via IOAPIC, update the map. |
207 | * If the map isn't set up yet, install a temporary one. |
208 | */ |
209 | |
210 | sc = ioapic_find_bybase(InterruptNumber); |
211 | if (sc != NULL) { |
212 | pic = &sc->sc_pic; |
213 | |
214 | if (pic->pic_type == PIC_IOAPIC) { |
215 | pin = (int)InterruptNumber - pic->pic_vecbase; |
216 | irq = -1; |
217 | } else { |
218 | irq = pin = (int)InterruptNumber; |
219 | } |
220 | |
221 | mip = sc->sc_pins[pin].ip_map; |
222 | if (mip) { |
223 | mip->flags &= ~0xf; |
224 | mip->flags |= mpflags; |
225 | mip->redir &= ~(IOAPIC_REDLO_LEVEL | |
226 | IOAPIC_REDLO_ACTLO); |
227 | mip->redir |= redir; |
228 | } else { |
229 | mipp = &sc->sc_pins[pin].ip_map; |
230 | *mipp = &tmpmap; |
231 | tmpmap.redir = redir; |
232 | tmpmap.flags = mpflags; |
233 | } |
234 | } else |
235 | #endif |
236 | { |
237 | pic = &i8259_pic; |
238 | irq = pin = (int)InterruptNumber; |
239 | } |
240 | |
241 | /* |
242 | * XXX probably, IPL_BIO is enough. |
243 | */ |
244 | ih = intr_establish_xname(irq, pic, pin, type, IPL_TTY, |
245 | (int (*)(void *)) ServiceRoutine, Context, false, "acpi SCI" ); |
246 | |
247 | #if NIOAPIC > 0 |
248 | if (mipp) { |
249 | *mipp = NULL; |
250 | } |
251 | #endif |
252 | |
253 | if (ih == NULL) |
254 | return AE_NO_MEMORY; |
255 | |
256 | *cookiep = ih; |
257 | |
258 | return AE_OK; |
259 | } |
260 | |
261 | void |
262 | acpi_md_OsRemoveInterruptHandler(void *cookie) |
263 | { |
264 | intr_disestablish(cookie); |
265 | } |
266 | |
267 | ACPI_STATUS |
268 | acpi_md_OsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress, |
269 | uint32_t Length, void **LogicalAddress) |
270 | { |
271 | int rv; |
272 | |
273 | rv = _x86_memio_map(x86_bus_space_mem, PhysicalAddress, |
274 | Length, 0, (bus_space_handle_t *)LogicalAddress); |
275 | |
276 | return (rv != 0) ? AE_NO_MEMORY : AE_OK; |
277 | } |
278 | |
279 | void |
280 | acpi_md_OsUnmapMemory(void *LogicalAddress, uint32_t Length) |
281 | { |
282 | (void) _x86_memio_unmap(x86_bus_space_mem, |
283 | (bus_space_handle_t)LogicalAddress, Length, NULL); |
284 | } |
285 | |
286 | ACPI_STATUS |
287 | acpi_md_OsGetPhysicalAddress(void *LogicalAddress, |
288 | ACPI_PHYSICAL_ADDRESS *PhysicalAddress) |
289 | { |
290 | paddr_t pa; |
291 | |
292 | if (pmap_extract(pmap_kernel(), (vaddr_t) LogicalAddress, &pa)) { |
293 | *PhysicalAddress = pa; |
294 | return AE_OK; |
295 | } |
296 | |
297 | return AE_ERROR; |
298 | } |
299 | |
300 | BOOLEAN |
301 | acpi_md_OsReadable(void *Pointer, uint32_t Length) |
302 | { |
303 | BOOLEAN rv = TRUE; |
304 | vaddr_t sva, eva; |
305 | pt_entry_t *pte; |
306 | |
307 | sva = trunc_page((vaddr_t) Pointer); |
308 | eva = round_page((vaddr_t) Pointer + Length); |
309 | |
310 | if (sva < VM_MIN_KERNEL_ADDRESS) |
311 | return FALSE; |
312 | |
313 | for (; sva < eva; sva += PAGE_SIZE) { |
314 | pte = kvtopte(sva); |
315 | if ((*pte & PG_V) == 0) { |
316 | rv = FALSE; |
317 | break; |
318 | } |
319 | } |
320 | |
321 | return rv; |
322 | } |
323 | |
324 | BOOLEAN |
325 | acpi_md_OsWritable(void *Pointer, uint32_t Length) |
326 | { |
327 | BOOLEAN rv = TRUE; |
328 | vaddr_t sva, eva; |
329 | pt_entry_t *pte; |
330 | |
331 | sva = trunc_page((vaddr_t) Pointer); |
332 | eva = round_page((vaddr_t) Pointer + Length); |
333 | |
334 | if (sva < VM_MIN_KERNEL_ADDRESS) |
335 | return FALSE; |
336 | |
337 | for (; sva < eva; sva += PAGE_SIZE) { |
338 | pte = kvtopte(sva); |
339 | if ((*pte & (PG_V|PG_W)) != (PG_V|PG_W)) { |
340 | rv = FALSE; |
341 | break; |
342 | } |
343 | } |
344 | |
345 | return rv; |
346 | } |
347 | |
348 | void |
349 | acpi_md_OsDisableInterrupt(void) |
350 | { |
351 | x86_disable_intr(); |
352 | } |
353 | |
354 | void |
355 | acpi_md_OsEnableInterrupt(void) |
356 | { |
357 | x86_enable_intr(); |
358 | } |
359 | |
360 | uint32_t |
361 | acpi_md_ncpus(void) |
362 | { |
363 | return kcpuset_countset(kcpuset_attached); |
364 | } |
365 | |
366 | static bool |
367 | acpi_md_mcfg_validate(uint64_t addr, int bus_start, int *bus_end) |
368 | { |
369 | struct btinfo_memmap *bim; |
370 | uint64_t size, mapaddr, mapsize; |
371 | uint32_t type; |
372 | int i, n; |
373 | |
374 | bim = lookup_bootinfo(BTINFO_MEMMAP); |
375 | if (bim == NULL) |
376 | return false; |
377 | |
378 | size = *bus_end - bus_start + 1; |
379 | size *= ACPIMCFG_SIZE_PER_BUS; |
380 | for (i = 0; i < bim->num; i++) { |
381 | mapaddr = bim->entry[i].addr; |
382 | mapsize = bim->entry[i].size; |
383 | type = bim->entry[i].type; |
384 | |
385 | aprint_debug("MCFG: MEMMAP: 0x%016" PRIx64 "-0x%016" PRIx64 |
386 | ", size=0x%016" PRIx64 ", type=%d(%s)\n" , |
387 | mapaddr, mapaddr + mapsize - 1, mapsize, type, |
388 | (type == BIM_Memory) ? "Memory" : |
389 | (type == BIM_Reserved) ? "Reserved" : |
390 | (type == BIM_ACPI) ? "ACPI" : |
391 | (type == BIM_NVS) ? "NVS" : |
392 | "unknown" ); |
393 | |
394 | switch (type) { |
395 | case BIM_ACPI: |
396 | case BIM_Reserved: |
397 | if (addr < mapaddr || addr >= mapaddr + mapsize) |
398 | break; |
399 | |
400 | /* full map */ |
401 | if (addr + size <= mapaddr + mapsize) |
402 | return true; |
403 | |
404 | /* partial map */ |
405 | n = (mapsize - (addr - mapaddr)) / |
406 | ACPIMCFG_SIZE_PER_BUS; |
407 | /* bus_start == bus_end is not allowed. */ |
408 | if (n > 1) { |
409 | *bus_end = bus_start + n - 1; |
410 | return true; |
411 | } |
412 | aprint_debug("MCFG: bus %d-%d, address 0x%016" PRIx64 |
413 | ": invalid size: request 0x%016" PRIx64 ", " |
414 | "actual 0x%016" PRIx64 "\n" , |
415 | bus_start, *bus_end, addr, size, mapsize); |
416 | break; |
417 | } |
418 | } |
419 | aprint_debug("MCFG: bus %d-%d, address 0x%016" PRIx64 ": " |
420 | "no valid region\n" , bus_start, *bus_end, addr); |
421 | return false; |
422 | } |
423 | |
424 | static uint32_t |
425 | acpi_md_mcfg_read(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t addr) |
426 | { |
427 | vaddr_t va = bsh + addr; |
428 | uint32_t data = (uint32_t) -1; |
429 | |
430 | KASSERT(bst == x86_bus_space_mem); |
431 | |
432 | __asm("movl %1, %0" : "=a" (data) : "m" (*(volatile uint32_t *)va)); |
433 | |
434 | return data; |
435 | } |
436 | |
437 | static void |
438 | acpi_md_mcfg_write(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t addr, |
439 | uint32_t data) |
440 | { |
441 | vaddr_t va = bsh + addr; |
442 | |
443 | KASSERT(bst == x86_bus_space_mem); |
444 | |
445 | __asm("movl %1, %0" : "=m" (*(volatile uint32_t *)va) : "a" (data)); |
446 | } |
447 | |
448 | static const struct acpimcfg_ops acpi_md_mcfg_ops = { |
449 | .ao_validate = acpi_md_mcfg_validate, |
450 | |
451 | .ao_read = acpi_md_mcfg_read, |
452 | .ao_write = acpi_md_mcfg_write, |
453 | }; |
454 | |
455 | void |
456 | acpi_md_callback(struct acpi_softc *sc) |
457 | { |
458 | #ifdef MPBIOS |
459 | if (!mpbios_scanned) |
460 | #endif |
461 | mpacpi_find_interrupts(sc); |
462 | |
463 | #ifndef XEN |
464 | acpi_md_sleep_init(); |
465 | #endif |
466 | |
467 | acpimcfg_init(x86_bus_space_mem, &acpi_md_mcfg_ops); |
468 | } |
469 | |
470 | #ifndef XEN |
471 | void |
472 | device_acpi_register(device_t dev, void *aux) |
473 | { |
474 | device_t parent; |
475 | bool device_is_vga, device_is_pci, device_is_isa; |
476 | |
477 | parent = device_parent(dev); |
478 | if (parent == NULL) |
479 | return; |
480 | |
481 | device_is_vga = device_is_a(dev, "vga" ) || device_is_a(dev, "genfb" ); |
482 | device_is_pci = device_is_a(parent, "pci" ); |
483 | device_is_isa = device_is_a(parent, "isa" ); |
484 | |
485 | if (device_is_vga && (device_is_pci || device_is_isa)) { |
486 | extern int acpi_md_vbios_reset; |
487 | |
488 | acpi_md_vbios_reset = VBIOS_RESET_DEFAULT; |
489 | } |
490 | } |
491 | #endif |
492 | |