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acpi_machdep.c revision 1.9 
      1 /* $NetBSD: acpi_machdep.c,v 1.9 2015/10/02 05:22:52 msaitoh 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 1.9 2015/10/02 05:22:52 msaitoh 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 
     56 #include <dev/acpi/acpica.h>
     57 #include <dev/acpi/acpivar.h>
     58 #include <dev/acpi/acpi_mcfg.h>
     59 
     60 #include <machine/acpi_machdep.h>
     61 #include <machine/mpbiosvar.h>
     62 #include <machine/mpacpi.h>
     63 #include <machine/i82093reg.h>
     64 #include <machine/i82093var.h>
     65 #include <machine/pic.h>
     66 
     67 #include <dev/pci/pcivar.h>
     68 
     69 #include <dev/isa/isareg.h>
     70 #include <dev/isa/isavar.h>
     71 
     72 #include "ioapic.h"
     73 
     74 #include "acpica.h"
     75 #include "opt_mpbios.h"
     76 #include "opt_acpi.h"
     77 
     78 ACPI_STATUS
     79 acpi_md_OsInitialize(void)
     80 {
     81 	return AE_OK;
     82 }
     83 
     84 ACPI_PHYSICAL_ADDRESS
     85 acpi_md_OsGetRootPointer(void)
     86 {
     87 	ACPI_PHYSICAL_ADDRESS PhysicalAddress;
     88 	ACPI_STATUS Status;
     89 
     90 	Status = AcpiFindRootPointer(&PhysicalAddress);
     91 
     92 	if (ACPI_FAILURE(Status))
     93 		PhysicalAddress = 0;
     94 
     95 	return PhysicalAddress;
     96 }
     97 
     98 struct acpi_md_override {
     99 	int irq;
    100 	int pin;
    101 	int flags;
    102 };
    103 
    104 #if NIOAPIC > 0
    105 static ACPI_STATUS
    106 acpi_md_findoverride(ACPI_SUBTABLE_HEADER *hdrp, void *aux)
    107 {
    108 	ACPI_MADT_INTERRUPT_OVERRIDE *iop;
    109 	struct acpi_md_override *ovrp;
    110 
    111 	if (hdrp->Type != ACPI_MADT_TYPE_INTERRUPT_OVERRIDE) {
    112 		return AE_OK;
    113 	}
    114 
    115 	iop = (void *)hdrp;
    116 	ovrp = aux;
    117 	if (iop->SourceIrq == ovrp->irq) {
    118 		ovrp->pin = iop->GlobalIrq;
    119 		ovrp->flags = iop->IntiFlags;
    120 	}
    121 	return AE_OK;
    122 }
    123 #endif
    124 
    125 ACPI_STATUS
    126 acpi_md_OsInstallInterruptHandler(uint32_t InterruptNumber,
    127     ACPI_OSD_HANDLER ServiceRoutine, void *Context, void **cookiep)
    128 {
    129 	void *ih;
    130 	struct pic *pic;
    131 #if NIOAPIC > 0
    132 	struct ioapic_softc *sc;
    133 	struct acpi_md_override ovr;
    134 	struct mp_intr_map tmpmap, *mip, **mipp = NULL;
    135 #endif
    136 	int irq, pin, type, redir, mpflags;
    137 
    138 	/*
    139 	 * ACPI interrupts default to level-triggered active-low.
    140 	 */
    141 
    142 	type = IST_LEVEL;
    143 	mpflags = (MPS_INTTR_LEVEL << 2) | MPS_INTPO_ACTLO;
    144 	redir = IOAPIC_REDLO_LEVEL | IOAPIC_REDLO_ACTLO;
    145 
    146 #if NIOAPIC > 0
    147 
    148 	/*
    149 	 * Apply any MADT override setting.
    150 	 */
    151 
    152 	ovr.irq = InterruptNumber;
    153 	ovr.pin = -1;
    154 	if (acpi_madt_map() == AE_OK) {
    155 		acpi_madt_walk(acpi_md_findoverride, &ovr);
    156 		acpi_madt_unmap();
    157 	} else {
    158 		aprint_debug("acpi_madt_map() failed, can't check for MADT override\n");
    159 	}
    160 
    161 	if (ovr.pin != -1) {
    162 		bool sci = InterruptNumber == AcpiGbl_FADT.SciInterrupt;
    163 		int polarity = ovr.flags & ACPI_MADT_POLARITY_MASK;
    164 		int trigger = ovr.flags & ACPI_MADT_TRIGGER_MASK;
    165 
    166 		InterruptNumber = ovr.pin;
    167 		if (polarity == ACPI_MADT_POLARITY_ACTIVE_HIGH ||
    168 		    (!sci && polarity == ACPI_MADT_POLARITY_CONFORMS)) {
    169 			mpflags &= ~MPS_INTPO_ACTLO;
    170 			mpflags |= MPS_INTPO_ACTHI;
    171 			redir &= ~IOAPIC_REDLO_ACTLO;
    172 		}
    173 		if (trigger == ACPI_MADT_TRIGGER_EDGE ||
    174 		    (!sci && trigger == ACPI_MADT_TRIGGER_CONFORMS)) {
    175 			type = IST_EDGE;
    176 			mpflags &= ~(MPS_INTTR_LEVEL << 2);
    177 			mpflags |= (MPS_INTTR_EDGE << 2);
    178 			redir &= ~IOAPIC_REDLO_LEVEL;
    179 		}
    180 	}
    181 
    182 	/*
    183 	 * If the interrupt is handled via IOAPIC, update the map.
    184 	 * If the map isn't set up yet, install a temporary one.
    185 	 */
    186 
    187 	sc = ioapic_find_bybase(InterruptNumber);
    188 	if (sc != NULL) {
    189 		pic = &sc->sc_pic;
    190 
    191 		if (pic->pic_type == PIC_IOAPIC) {
    192 			pin = (int)InterruptNumber - pic->pic_vecbase;
    193 			irq = -1;
    194 		} else {
    195 			irq = pin = (int)InterruptNumber;
    196 		}
    197 
    198 		mip = sc->sc_pins[pin].ip_map;
    199 		if (mip) {
    200 			mip->flags &= ~0xf;
    201 			mip->flags |= mpflags;
    202 			mip->redir &= ~(IOAPIC_REDLO_LEVEL |
    203 					IOAPIC_REDLO_ACTLO);
    204 			mip->redir |= redir;
    205 		} else {
    206 			mipp = &sc->sc_pins[pin].ip_map;
    207 			*mipp = &tmpmap;
    208 			tmpmap.redir = redir;
    209 			tmpmap.flags = mpflags;
    210 		}
    211 	} else
    212 #endif
    213 	{
    214 		pic = &i8259_pic;
    215 		irq = pin = (int)InterruptNumber;
    216 	}
    217 
    218 	/*
    219 	 * XXX probably, IPL_BIO is enough.
    220 	 */
    221 	ih = intr_establish(irq, pic, pin, type, IPL_TTY,
    222 	    (int (*)(void *)) ServiceRoutine, Context, false);
    223 
    224 #if NIOAPIC > 0
    225 	if (mipp) {
    226 		*mipp = NULL;
    227 	}
    228 #endif
    229 
    230 	if (ih == NULL)
    231 		return AE_NO_MEMORY;
    232 
    233 	*cookiep = ih;
    234 
    235 	return AE_OK;
    236 }
    237 
    238 void
    239 acpi_md_OsRemoveInterruptHandler(void *cookie)
    240 {
    241 	intr_disestablish(cookie);
    242 }
    243 
    244 ACPI_STATUS
    245 acpi_md_OsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress,
    246     uint32_t Length, void **LogicalAddress)
    247 {
    248 	int rv;
    249 
    250 	rv = _x86_memio_map(x86_bus_space_mem, PhysicalAddress,
    251 	    Length, 0, (bus_space_handle_t *)LogicalAddress);
    252 
    253 	return (rv != 0) ? AE_NO_MEMORY : AE_OK;
    254 }
    255 
    256 void
    257 acpi_md_OsUnmapMemory(void *LogicalAddress, uint32_t Length)
    258 {
    259 	(void) _x86_memio_unmap(x86_bus_space_mem,
    260 	    (bus_space_handle_t)LogicalAddress, Length, NULL);
    261 }
    262 
    263 ACPI_STATUS
    264 acpi_md_OsGetPhysicalAddress(void *LogicalAddress,
    265     ACPI_PHYSICAL_ADDRESS *PhysicalAddress)
    266 {
    267 	paddr_t pa;
    268 
    269 	if (pmap_extract(pmap_kernel(), (vaddr_t) LogicalAddress, &pa)) {
    270 		*PhysicalAddress = pa;
    271 		return AE_OK;
    272 	}
    273 
    274 	return AE_ERROR;
    275 }
    276 
    277 BOOLEAN
    278 acpi_md_OsReadable(void *Pointer, uint32_t Length)
    279 {
    280 	BOOLEAN rv = TRUE;
    281 	vaddr_t sva, eva;
    282 	pt_entry_t *pte;
    283 
    284 	sva = trunc_page((vaddr_t) Pointer);
    285 	eva = round_page((vaddr_t) Pointer + Length);
    286 
    287 	if (sva < VM_MIN_KERNEL_ADDRESS)
    288 		return FALSE;
    289 
    290 	for (; sva < eva; sva += PAGE_SIZE) {
    291 		pte = kvtopte(sva);
    292 		if ((*pte & PG_V) == 0) {
    293 			rv = FALSE;
    294 			break;
    295 		}
    296 	}
    297 
    298 	return rv;
    299 }
    300 
    301 BOOLEAN
    302 acpi_md_OsWritable(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|PG_W)) != (PG_V|PG_W)) {
    317 			rv = FALSE;
    318 			break;
    319 		}
    320 	}
    321 
    322 	return rv;
    323 }
    324 
    325 void
    326 acpi_md_OsDisableInterrupt(void)
    327 {
    328 	x86_disable_intr();
    329 }
    330 
    331 void
    332 acpi_md_OsEnableInterrupt(void)
    333 {
    334 	x86_enable_intr();
    335 }
    336 
    337 uint32_t
    338 acpi_md_ncpus(void)
    339 {
    340 	return kcpuset_countset(kcpuset_attached);
    341 }
    342 
    343 static bool
    344 acpi_md_mcfg_validate(uint64_t addr, int bus_start, int *bus_end)
    345 {
    346 	struct btinfo_memmap *bim;
    347 	uint64_t size, mapaddr, mapsize;
    348 	uint32_t type;
    349 	int i, n;
    350 
    351 	bim = lookup_bootinfo(BTINFO_MEMMAP);
    352 	if (bim == NULL)
    353 		return false;
    354 
    355 	size = (*bus_end - bus_start + 1) * ACPIMCFG_SIZE_PER_BUS;
    356 	for (i = 0; i < bim->num; i++) {
    357 		mapaddr = bim->entry[i].addr;
    358 		mapsize = bim->entry[i].size;
    359 		type = bim->entry[i].type;
    360 
    361 		aprint_debug("MCFG: MEMMAP: 0x%016" PRIx64 "-0x%016" PRIx64
    362 		    ", size=0x%016" PRIx64 ", type=%d(%s)\n",
    363 		    mapaddr, mapaddr + mapsize - 1, mapsize, type,
    364 		    (type == BIM_Memory) ?  "Memory" :
    365 		    (type == BIM_Reserved) ?  "Reserved" :
    366 		    (type == BIM_ACPI) ? "ACPI" :
    367 		    (type == BIM_NVS) ? "NVS" :
    368 		    "unknown");
    369 
    370 		switch (type) {
    371 		case BIM_ACPI:
    372 		case BIM_Reserved:
    373 			if (addr < mapaddr || addr >= mapaddr + mapsize)
    374 				break;
    375 
    376 			/* full map */
    377 			if (addr + size <= mapaddr + mapsize)
    378 				return true;
    379 
    380 			/* partial map */
    381 			n = (mapsize - (addr - mapaddr)) /
    382 			    ACPIMCFG_SIZE_PER_BUS;
    383 			/* bus_start == bus_end is not allowed. */
    384 			if (n > 1) {
    385 				*bus_end = bus_start + n - 1;
    386 				return true;
    387 			}
    388 			aprint_debug("MCFG: bus %d-%d, address 0x%016" PRIx64
    389 			    ": invalid size: request 0x%016" PRIx64 ", "
    390 			    "actual 0x%016" PRIx64 "\n",
    391 			    bus_start, *bus_end, addr, size, mapsize);
    392 			break;
    393 		}
    394 	}
    395 	aprint_debug("MCFG: bus %d-%d, address 0x%016" PRIx64 ": "
    396 	    "no valid region\n", bus_start, *bus_end, addr);
    397 	return false;
    398 }
    399 
    400 static uint32_t
    401 acpi_md_mcfg_read(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t addr)
    402 {
    403 	vaddr_t va = bsh + addr;
    404 	uint32_t data = (uint32_t) -1;
    405 
    406 	KASSERT(bst == x86_bus_space_mem);
    407 
    408 	__asm("movl %1, %0" : "=a" (data) : "m" (*(volatile uint32_t *)va));
    409 
    410 	return data;
    411 }
    412 
    413 static void
    414 acpi_md_mcfg_write(bus_space_tag_t bst, bus_space_handle_t bsh, bus_addr_t addr,
    415     uint32_t data)
    416 {
    417 	vaddr_t va = bsh + addr;
    418 
    419 	KASSERT(bst == x86_bus_space_mem);
    420 
    421 	__asm("movl %1, %0" : "=m" (*(volatile uint32_t *)va) : "a" (data));
    422 }
    423 
    424 static const struct acpimcfg_ops acpi_md_mcfg_ops = {
    425 	.ao_validate = acpi_md_mcfg_validate,
    426 
    427 	.ao_read = acpi_md_mcfg_read,
    428 	.ao_write = acpi_md_mcfg_write,
    429 };
    430 
    431 void
    432 acpi_md_callback(struct acpi_softc *sc)
    433 {
    434 #ifdef MPBIOS
    435 	if (!mpbios_scanned)
    436 #endif
    437 	mpacpi_find_interrupts(sc);
    438 
    439 #ifndef XEN
    440 	acpi_md_sleep_init();
    441 #endif
    442 
    443 	acpimcfg_init(x86_bus_space_mem, &acpi_md_mcfg_ops);
    444 }
    445