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acpi_machdep.c revision 1.24 
      1 /* $NetBSD: acpi_machdep.c,v 1.24 2019/03/09 08:42:25 maxv 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 1.24 2019/03/09 08:42:25 maxv 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 XENPV
    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     const char *xname)
    152 {
    153 	void *ih;
    154 
    155 	ih = acpi_md_intr_establish(InterruptNumber, IPL_TTY, IST_LEVEL,
    156 	    (int (*)(void *))ServiceRoutine, Context, false, xname);
    157 	if (ih == NULL)
    158 		return AE_NO_MEMORY;
    159 
    160 	*cookiep = ih;
    161 
    162 	return AE_OK;
    163 }
    164 
    165 void
    166 acpi_md_OsRemoveInterruptHandler(void *cookie)
    167 {
    168 	intr_disestablish(cookie);
    169 }
    170 
    171 void *
    172 acpi_md_intr_establish(uint32_t InterruptNumber, int ipl, int type,
    173     int (*handler)(void *), void *arg, bool mpsafe, const char *xname)
    174 {
    175 	void *ih;
    176 	struct pic *pic;
    177 #if NIOAPIC > 0
    178 	struct ioapic_softc *sc;
    179 	struct acpi_md_override ovr;
    180 	struct mp_intr_map tmpmap, *mip, **mipp = NULL;
    181 #endif
    182 	int irq, pin, redir, mpflags;
    183 
    184 	/*
    185 	 * ACPI interrupts default to level-triggered active-low.
    186 	 */
    187 
    188 	mpflags = (MPS_INTTR_LEVEL << 2) | MPS_INTPO_ACTLO;
    189 	redir = IOAPIC_REDLO_LEVEL | IOAPIC_REDLO_ACTLO;
    190 
    191 #if NIOAPIC > 0
    192 
    193 	/*
    194 	 * Apply any MADT override setting.
    195 	 */
    196 
    197 	ovr.irq = InterruptNumber;
    198 	ovr.pin = -1;
    199 	if (acpi_madt_map() == AE_OK) {
    200 		acpi_madt_walk(acpi_md_findoverride, &ovr);
    201 		acpi_madt_unmap();
    202 	} else {
    203 		aprint_debug("acpi_madt_map() failed, can't check for MADT override\n");
    204 	}
    205 
    206 	if (ovr.pin != -1) {
    207 		bool sci = InterruptNumber == AcpiGbl_FADT.SciInterrupt;
    208 		int polarity = ovr.flags & ACPI_MADT_POLARITY_MASK;
    209 		int trigger = ovr.flags & ACPI_MADT_TRIGGER_MASK;
    210 
    211 		InterruptNumber = ovr.pin;
    212 		if (polarity == ACPI_MADT_POLARITY_ACTIVE_HIGH ||
    213 		    (!sci && polarity == ACPI_MADT_POLARITY_CONFORMS)) {
    214 			mpflags &= ~MPS_INTPO_ACTLO;
    215 			mpflags |= MPS_INTPO_ACTHI;
    216 			redir &= ~IOAPIC_REDLO_ACTLO;
    217 		}
    218 		if (trigger == ACPI_MADT_TRIGGER_EDGE ||
    219 		    (!sci && trigger == ACPI_MADT_TRIGGER_CONFORMS)) {
    220 			type = IST_EDGE;
    221 			mpflags &= ~(MPS_INTTR_LEVEL << 2);
    222 			mpflags |= (MPS_INTTR_EDGE << 2);
    223 			redir &= ~IOAPIC_REDLO_LEVEL;
    224 		}
    225 	}
    226 
    227 	/*
    228 	 * If the interrupt is handled via IOAPIC, update the map.
    229 	 * If the map isn't set up yet, install a temporary one.
    230 	 */
    231 
    232 	sc = ioapic_find_bybase(InterruptNumber);
    233 	if (sc != NULL) {
    234 		pic = &sc->sc_pic;
    235 
    236 		if (pic->pic_type == PIC_IOAPIC) {
    237 			pin = (int)InterruptNumber - pic->pic_vecbase;
    238 			irq = -1;
    239 		} else {
    240 			irq = pin = (int)InterruptNumber;
    241 		}
    242 
    243 		mip = sc->sc_pins[pin].ip_map;
    244 		if (mip) {
    245 			mip->flags &= ~0xf;
    246 			mip->flags |= mpflags;
    247 			mip->redir &= ~(IOAPIC_REDLO_LEVEL |
    248 					IOAPIC_REDLO_ACTLO);
    249 			mip->redir |= redir;
    250 		} else {
    251 			mipp = &sc->sc_pins[pin].ip_map;
    252 			*mipp = &tmpmap;
    253 			tmpmap.redir = redir;
    254 			tmpmap.flags = mpflags;
    255 		}
    256 	} else
    257 #endif
    258 	{
    259 		pic = &i8259_pic;
    260 		irq = pin = (int)InterruptNumber;
    261 	}
    262 
    263 	ih = intr_establish_xname(irq, pic, pin, type, ipl,
    264 	    handler, arg, mpsafe, xname);
    265 
    266 #if NIOAPIC > 0
    267 	if (mipp) {
    268 		*mipp = NULL;
    269 	}
    270 #endif
    271 
    272 	return ih;
    273 }
    274 
    275 void
    276 acpi_md_intr_disestablish(void *ih)
    277 {
    278 	intr_disestablish(ih);
    279 }
    280 
    281 ACPI_STATUS
    282 acpi_md_OsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress,
    283     uint32_t Length, void **LogicalAddress)
    284 {
    285 	int rv;
    286 
    287 	rv = _x86_memio_map(x86_bus_space_mem, PhysicalAddress,
    288 	    Length, 0, (bus_space_handle_t *)LogicalAddress);
    289 
    290 	return (rv != 0) ? AE_NO_MEMORY : AE_OK;
    291 }
    292 
    293 void
    294 acpi_md_OsUnmapMemory(void *LogicalAddress, uint32_t Length)
    295 {
    296 	(void) _x86_memio_unmap(x86_bus_space_mem,
    297 	    (bus_space_handle_t)LogicalAddress, Length, NULL);
    298 }
    299 
    300 ACPI_STATUS
    301 acpi_md_OsGetPhysicalAddress(void *LogicalAddress,
    302     ACPI_PHYSICAL_ADDRESS *PhysicalAddress)
    303 {
    304 	paddr_t pa;
    305 
    306 	if (pmap_extract(pmap_kernel(), (vaddr_t) LogicalAddress, &pa)) {
    307 		*PhysicalAddress = pa;
    308 		return AE_OK;
    309 	}
    310 
    311 	return AE_ERROR;
    312 }
    313 
    314 BOOLEAN
    315 acpi_md_OsReadable(void *Pointer, uint32_t Length)
    316 {
    317 	BOOLEAN rv = TRUE;
    318 	vaddr_t sva, eva;
    319 	pt_entry_t *pte;
    320 
    321 	sva = trunc_page((vaddr_t) Pointer);
    322 	eva = round_page((vaddr_t) Pointer + Length);
    323 
    324 	if (sva < VM_MIN_KERNEL_ADDRESS)
    325 		return FALSE;
    326 
    327 	for (; sva < eva; sva += PAGE_SIZE) {
    328 		pte = kvtopte(sva);
    329 		if ((*pte & PTE_P) == 0) {
    330 			rv = FALSE;
    331 			break;
    332 		}
    333 	}
    334 
    335 	return rv;
    336 }
    337 
    338 BOOLEAN
    339 acpi_md_OsWritable(void *Pointer, uint32_t Length)
    340 {
    341 	BOOLEAN rv = TRUE;
    342 	vaddr_t sva, eva;
    343 	pt_entry_t *pte;
    344 
    345 	sva = trunc_page((vaddr_t) Pointer);
    346 	eva = round_page((vaddr_t) Pointer + Length);
    347 
    348 	if (sva < VM_MIN_KERNEL_ADDRESS)
    349 		return FALSE;
    350 
    351 	for (; sva < eva; sva += PAGE_SIZE) {
    352 		pte = kvtopte(sva);
    353 		if ((*pte & (PTE_P|PTE_W)) != (PTE_P|PTE_W)) {
    354 			rv = FALSE;
    355 			break;
    356 		}
    357 	}
    358 
    359 	return rv;
    360 }
    361 
    362 void
    363 acpi_md_OsDisableInterrupt(void)
    364 {
    365 	x86_disable_intr();
    366 }
    367 
    368 void
    369 acpi_md_OsEnableInterrupt(void)
    370 {
    371 	x86_enable_intr();
    372 }
    373 
    374 uint32_t
    375 acpi_md_ncpus(void)
    376 {
    377 	return kcpuset_countset(kcpuset_attached);
    378 }
    379 
    380 static bool
    381 acpi_md_mcfg_validate(uint64_t addr, int bus_start, int *bus_end)
    382 {
    383 	struct btinfo_memmap *bim;
    384 	uint64_t size, mapaddr, mapsize;
    385 	uint32_t type;
    386 	int i, n;
    387 
    388 #ifndef XENPV
    389 	if (lookup_bootinfo(BTINFO_EFIMEMMAP) != NULL)
    390 		bim = efi_get_e820memmap();
    391 	else
    392 #endif
    393 		bim = lookup_bootinfo(BTINFO_MEMMAP);
    394 	if (bim == NULL)
    395 		return false;
    396 
    397 	size = *bus_end - bus_start + 1;
    398 	size *= ACPIMCFG_SIZE_PER_BUS;
    399 	for (i = 0; i < bim->num; i++) {
    400 		mapaddr = bim->entry[i].addr;
    401 		mapsize = bim->entry[i].size;
    402 		type = bim->entry[i].type;
    403 
    404 		aprint_debug("MCFG: MEMMAP: 0x%016" PRIx64
    405 		    "-0x%016" PRIx64 ", size=0x%016" PRIx64
    406 		    ", type=%d(%s)\n",
    407 		    mapaddr, mapaddr + mapsize - 1, mapsize, type,
    408 		    (type == BIM_Memory) ?  "Memory" :
    409 		    (type == BIM_Reserved) ?  "Reserved" :
    410 		    (type == BIM_ACPI) ? "ACPI" :
    411 		    (type == BIM_NVS) ? "NVS" :
    412 		    (type == BIM_PMEM) ? "Persistent" :
    413 		    (type == BIM_PRAM) ? "Persistent (Legacy)" :
    414 		    "unknown");
    415 
    416 		switch (type) {
    417 		case BIM_ACPI:
    418 		case BIM_Reserved:
    419 			if (addr < mapaddr || addr >= mapaddr + mapsize)
    420 				break;
    421 
    422 			/* full map */
    423 			if (addr + size <= mapaddr + mapsize)
    424 				return true;
    425 
    426 			/* partial map */
    427 			n = (mapsize - (addr - mapaddr)) /
    428 			    ACPIMCFG_SIZE_PER_BUS;
    429 			/* bus_start == bus_end is not allowed. */
    430 			if (n > 1) {
    431 				*bus_end = bus_start + n - 1;
    432 				return true;
    433 			}
    434 			aprint_debug("MCFG: bus %d-%d, address 0x%016" PRIx64
    435 			    ": invalid size: request 0x%016" PRIx64 ", "
    436 			    "actual 0x%016" PRIx64 "\n",
    437 			    bus_start, *bus_end, addr, size, mapsize);
    438 			break;
    439 		}
    440 	}
    441 	aprint_debug("MCFG: bus %d-%d, address 0x%016" PRIx64 ": "
    442 	    "no valid region\n", bus_start, *bus_end, addr);
    443 	return false;
    444 }
    445 
    446 static uint32_t
    447 acpi_md_mcfg_read(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t addr)
    448 {
    449 	vaddr_t va = bsh + addr;
    450 	uint32_t data = (uint32_t) -1;
    451 
    452 	KASSERT(bst == x86_bus_space_mem);
    453 
    454 	__asm("movl %1, %0" : "=a" (data) : "m" (*(volatile uint32_t *)va));
    455 
    456 	return data;
    457 }
    458 
    459 static void
    460 acpi_md_mcfg_write(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t addr,
    461     uint32_t data)
    462 {
    463 	vaddr_t va = bsh + addr;
    464 
    465 	KASSERT(bst == x86_bus_space_mem);
    466 
    467 	__asm("movl %1, %0" : "=m" (*(volatile uint32_t *)va) : "a" (data));
    468 }
    469 
    470 static const struct acpimcfg_ops acpi_md_mcfg_ops = {
    471 	.ao_validate = acpi_md_mcfg_validate,
    472 
    473 	.ao_read = acpi_md_mcfg_read,
    474 	.ao_write = acpi_md_mcfg_write,
    475 };
    476 
    477 void
    478 acpi_md_callback(struct acpi_softc *sc)
    479 {
    480 #ifdef MPBIOS
    481 	if (!mpbios_scanned)
    482 #endif
    483 	mpacpi_find_interrupts(sc);
    484 
    485 #ifndef XENPV
    486 	acpi_md_sleep_init();
    487 #endif
    488 
    489 	acpimcfg_init(x86_bus_space_mem, &acpi_md_mcfg_ops);
    490 }
    491 
    492 #ifndef XENPV
    493 void
    494 device_acpi_register(device_t dev, void *aux)
    495 {
    496 	device_t parent;
    497 	bool device_is_vga, device_is_pci, device_is_isa;
    498 
    499 	parent = device_parent(dev);
    500 	if (parent == NULL)
    501 		return;
    502 
    503 	device_is_vga = device_is_a(dev, "vga") || device_is_a(dev, "genfb");
    504 	device_is_pci = device_is_a(parent, "pci");
    505 	device_is_isa = device_is_a(parent, "isa");
    506 
    507 	if (device_is_vga && (device_is_pci || device_is_isa)) {
    508 		extern int acpi_md_vbios_reset;
    509 
    510 		acpi_md_vbios_reset = VBIOS_RESET_DEFAULT;
    511 	}
    512 }
    513 #endif
    514