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acpi_machdep.c revision 1.18.12.1 
      1 /* $NetBSD: acpi_machdep.c,v 1.18.12.1 2018/03/22 01:44:47 pgoyette 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 1.18.12.1 2018/03/22 01:44:47 pgoyette 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     const char *xname)
    152 {
    153 	void *ih;
    154 	struct pic *pic;
    155 #if NIOAPIC > 0
    156 	struct ioapic_softc *sc;
    157 	struct acpi_md_override ovr;
    158 	struct mp_intr_map tmpmap, *mip, **mipp = NULL;
    159 #endif
    160 	int irq, pin, type, redir, mpflags;
    161 
    162 	/*
    163 	 * ACPI interrupts default to level-triggered active-low.
    164 	 */
    165 
    166 	type = IST_LEVEL;
    167 	mpflags = (MPS_INTTR_LEVEL << 2) | MPS_INTPO_ACTLO;
    168 	redir = IOAPIC_REDLO_LEVEL | IOAPIC_REDLO_ACTLO;
    169 
    170 #if NIOAPIC > 0
    171 
    172 	/*
    173 	 * Apply any MADT override setting.
    174 	 */
    175 
    176 	ovr.irq = InterruptNumber;
    177 	ovr.pin = -1;
    178 	if (acpi_madt_map() == AE_OK) {
    179 		acpi_madt_walk(acpi_md_findoverride, &ovr);
    180 		acpi_madt_unmap();
    181 	} else {
    182 		aprint_debug("acpi_madt_map() failed, can't check for MADT override\n");
    183 	}
    184 
    185 	if (ovr.pin != -1) {
    186 		bool sci = InterruptNumber == AcpiGbl_FADT.SciInterrupt;
    187 		int polarity = ovr.flags & ACPI_MADT_POLARITY_MASK;
    188 		int trigger = ovr.flags & ACPI_MADT_TRIGGER_MASK;
    189 
    190 		InterruptNumber = ovr.pin;
    191 		if (polarity == ACPI_MADT_POLARITY_ACTIVE_HIGH ||
    192 		    (!sci && polarity == ACPI_MADT_POLARITY_CONFORMS)) {
    193 			mpflags &= ~MPS_INTPO_ACTLO;
    194 			mpflags |= MPS_INTPO_ACTHI;
    195 			redir &= ~IOAPIC_REDLO_ACTLO;
    196 		}
    197 		if (trigger == ACPI_MADT_TRIGGER_EDGE ||
    198 		    (!sci && trigger == ACPI_MADT_TRIGGER_CONFORMS)) {
    199 			type = IST_EDGE;
    200 			mpflags &= ~(MPS_INTTR_LEVEL << 2);
    201 			mpflags |= (MPS_INTTR_EDGE << 2);
    202 			redir &= ~IOAPIC_REDLO_LEVEL;
    203 		}
    204 	}
    205 
    206 	/*
    207 	 * If the interrupt is handled via IOAPIC, update the map.
    208 	 * If the map isn't set up yet, install a temporary one.
    209 	 */
    210 
    211 	sc = ioapic_find_bybase(InterruptNumber);
    212 	if (sc != NULL) {
    213 		pic = &sc->sc_pic;
    214 
    215 		if (pic->pic_type == PIC_IOAPIC) {
    216 			pin = (int)InterruptNumber - pic->pic_vecbase;
    217 			irq = -1;
    218 		} else {
    219 			irq = pin = (int)InterruptNumber;
    220 		}
    221 
    222 		mip = sc->sc_pins[pin].ip_map;
    223 		if (mip) {
    224 			mip->flags &= ~0xf;
    225 			mip->flags |= mpflags;
    226 			mip->redir &= ~(IOAPIC_REDLO_LEVEL |
    227 					IOAPIC_REDLO_ACTLO);
    228 			mip->redir |= redir;
    229 		} else {
    230 			mipp = &sc->sc_pins[pin].ip_map;
    231 			*mipp = &tmpmap;
    232 			tmpmap.redir = redir;
    233 			tmpmap.flags = mpflags;
    234 		}
    235 	} else
    236 #endif
    237 	{
    238 		pic = &i8259_pic;
    239 		irq = pin = (int)InterruptNumber;
    240 	}
    241 
    242 	/*
    243 	 * XXX probably, IPL_BIO is enough.
    244 	 */
    245 	ih = intr_establish_xname(irq, pic, pin, type, IPL_TTY,
    246 	    (int (*)(void *)) ServiceRoutine, Context, false, xname);
    247 
    248 #if NIOAPIC > 0
    249 	if (mipp) {
    250 		*mipp = NULL;
    251 	}
    252 #endif
    253 
    254 	if (ih == NULL)
    255 		return AE_NO_MEMORY;
    256 
    257 	*cookiep = ih;
    258 
    259 	return AE_OK;
    260 }
    261 
    262 void
    263 acpi_md_OsRemoveInterruptHandler(void *cookie)
    264 {
    265 	intr_disestablish(cookie);
    266 }
    267 
    268 ACPI_STATUS
    269 acpi_md_OsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress,
    270     uint32_t Length, void **LogicalAddress)
    271 {
    272 	int rv;
    273 
    274 	rv = _x86_memio_map(x86_bus_space_mem, PhysicalAddress,
    275 	    Length, 0, (bus_space_handle_t *)LogicalAddress);
    276 
    277 	return (rv != 0) ? AE_NO_MEMORY : AE_OK;
    278 }
    279 
    280 void
    281 acpi_md_OsUnmapMemory(void *LogicalAddress, uint32_t Length)
    282 {
    283 	(void) _x86_memio_unmap(x86_bus_space_mem,
    284 	    (bus_space_handle_t)LogicalAddress, Length, NULL);
    285 }
    286 
    287 ACPI_STATUS
    288 acpi_md_OsGetPhysicalAddress(void *LogicalAddress,
    289     ACPI_PHYSICAL_ADDRESS *PhysicalAddress)
    290 {
    291 	paddr_t pa;
    292 
    293 	if (pmap_extract(pmap_kernel(), (vaddr_t) LogicalAddress, &pa)) {
    294 		*PhysicalAddress = pa;
    295 		return AE_OK;
    296 	}
    297 
    298 	return AE_ERROR;
    299 }
    300 
    301 BOOLEAN
    302 acpi_md_OsReadable(void *Pointer, uint32_t Length)
    303 {
    304 	BOOLEAN rv = TRUE;
    305 	vaddr_t sva, eva;
    306 	pt_entry_t *pte;
    307 
    308 	sva = trunc_page((vaddr_t) Pointer);
    309 	eva = round_page((vaddr_t) Pointer + Length);
    310 
    311 	if (sva < VM_MIN_KERNEL_ADDRESS)
    312 		return FALSE;
    313 
    314 	for (; sva < eva; sva += PAGE_SIZE) {
    315 		pte = kvtopte(sva);
    316 		if ((*pte & PG_V) == 0) {
    317 			rv = FALSE;
    318 			break;
    319 		}
    320 	}
    321 
    322 	return rv;
    323 }
    324 
    325 BOOLEAN
    326 acpi_md_OsWritable(void *Pointer, uint32_t Length)
    327 {
    328 	BOOLEAN rv = TRUE;
    329 	vaddr_t sva, eva;
    330 	pt_entry_t *pte;
    331 
    332 	sva = trunc_page((vaddr_t) Pointer);
    333 	eva = round_page((vaddr_t) Pointer + Length);
    334 
    335 	if (sva < VM_MIN_KERNEL_ADDRESS)
    336 		return FALSE;
    337 
    338 	for (; sva < eva; sva += PAGE_SIZE) {
    339 		pte = kvtopte(sva);
    340 		if ((*pte & (PG_V|PG_W)) != (PG_V|PG_W)) {
    341 			rv = FALSE;
    342 			break;
    343 		}
    344 	}
    345 
    346 	return rv;
    347 }
    348 
    349 void
    350 acpi_md_OsDisableInterrupt(void)
    351 {
    352 	x86_disable_intr();
    353 }
    354 
    355 void
    356 acpi_md_OsEnableInterrupt(void)
    357 {
    358 	x86_enable_intr();
    359 }
    360 
    361 uint32_t
    362 acpi_md_ncpus(void)
    363 {
    364 	return kcpuset_countset(kcpuset_attached);
    365 }
    366 
    367 static bool
    368 acpi_md_mcfg_validate(uint64_t addr, int bus_start, int *bus_end)
    369 {
    370 	struct btinfo_memmap *bim;
    371 	uint64_t size, mapaddr, mapsize;
    372 	uint32_t type;
    373 	int i, n;
    374 
    375 #ifndef XEN
    376 	if (lookup_bootinfo(BTINFO_EFIMEMMAP) != NULL)
    377 		bim = efi_get_e820memmap();
    378 	else
    379 #endif
    380 		bim = lookup_bootinfo(BTINFO_MEMMAP);
    381 	if (bim == NULL)
    382 		return false;
    383 
    384 	size = *bus_end - bus_start + 1;
    385 	size *= ACPIMCFG_SIZE_PER_BUS;
    386 	for (i = 0; i < bim->num; i++) {
    387 		mapaddr = bim->entry[i].addr;
    388 		mapsize = bim->entry[i].size;
    389 		type = bim->entry[i].type;
    390 
    391 		aprint_debug("MCFG: MEMMAP: 0x%016" PRIx64
    392 		    "-0x%016" PRIx64 ", size=0x%016" PRIx64
    393 		    ", type=%d(%s)\n",
    394 		    mapaddr, mapaddr + mapsize - 1, mapsize, type,
    395 		    (type == BIM_Memory) ?  "Memory" :
    396 		    (type == BIM_Reserved) ?  "Reserved" :
    397 		    (type == BIM_ACPI) ? "ACPI" :
    398 		    (type == BIM_NVS) ? "NVS" :
    399 		    (type == BIM_PMEM) ? "Persistent" :
    400 		    (type == BIM_PRAM) ? "Persistent (Legacy)" :
    401 		    "unknown");
    402 
    403 		switch (type) {
    404 		case BIM_ACPI:
    405 		case BIM_Reserved:
    406 			if (addr < mapaddr || addr >= mapaddr + mapsize)
    407 				break;
    408 
    409 			/* full map */
    410 			if (addr + size <= mapaddr + mapsize)
    411 				return true;
    412 
    413 			/* partial map */
    414 			n = (mapsize - (addr - mapaddr)) /
    415 			    ACPIMCFG_SIZE_PER_BUS;
    416 			/* bus_start == bus_end is not allowed. */
    417 			if (n > 1) {
    418 				*bus_end = bus_start + n - 1;
    419 				return true;
    420 			}
    421 			aprint_debug("MCFG: bus %d-%d, address 0x%016" PRIx64
    422 			    ": invalid size: request 0x%016" PRIx64 ", "
    423 			    "actual 0x%016" PRIx64 "\n",
    424 			    bus_start, *bus_end, addr, size, mapsize);
    425 			break;
    426 		}
    427 	}
    428 	aprint_debug("MCFG: bus %d-%d, address 0x%016" PRIx64 ": "
    429 	    "no valid region\n", bus_start, *bus_end, addr);
    430 	return false;
    431 }
    432 
    433 static uint32_t
    434 acpi_md_mcfg_read(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t addr)
    435 {
    436 	vaddr_t va = bsh + addr;
    437 	uint32_t data = (uint32_t) -1;
    438 
    439 	KASSERT(bst == x86_bus_space_mem);
    440 
    441 	__asm("movl %1, %0" : "=a" (data) : "m" (*(volatile uint32_t *)va));
    442 
    443 	return data;
    444 }
    445 
    446 static void
    447 acpi_md_mcfg_write(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t addr,
    448     uint32_t data)
    449 {
    450 	vaddr_t va = bsh + addr;
    451 
    452 	KASSERT(bst == x86_bus_space_mem);
    453 
    454 	__asm("movl %1, %0" : "=m" (*(volatile uint32_t *)va) : "a" (data));
    455 }
    456 
    457 static const struct acpimcfg_ops acpi_md_mcfg_ops = {
    458 	.ao_validate = acpi_md_mcfg_validate,
    459 
    460 	.ao_read = acpi_md_mcfg_read,
    461 	.ao_write = acpi_md_mcfg_write,
    462 };
    463 
    464 void
    465 acpi_md_callback(struct acpi_softc *sc)
    466 {
    467 #ifdef MPBIOS
    468 	if (!mpbios_scanned)
    469 #endif
    470 	mpacpi_find_interrupts(sc);
    471 
    472 #ifndef XEN
    473 	acpi_md_sleep_init();
    474 #endif
    475 
    476 	acpimcfg_init(x86_bus_space_mem, &acpi_md_mcfg_ops);
    477 }
    478 
    479 #ifndef XEN
    480 void
    481 device_acpi_register(device_t dev, void *aux)
    482 {
    483 	device_t parent;
    484 	bool device_is_vga, device_is_pci, device_is_isa;
    485 
    486 	parent = device_parent(dev);
    487 	if (parent == NULL)
    488 		return;
    489 
    490 	device_is_vga = device_is_a(dev, "vga") || device_is_a(dev, "genfb");
    491 	device_is_pci = device_is_a(parent, "pci");
    492 	device_is_isa = device_is_a(parent, "isa");
    493 
    494 	if (device_is_vga && (device_is_pci || device_is_isa)) {
    495 		extern int acpi_md_vbios_reset;
    496 
    497 		acpi_md_vbios_reset = VBIOS_RESET_DEFAULT;
    498 	}
    499 }
    500 #endif
    501