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acpi_machdep.c revision 1.7 
      1 /* $NetBSD: acpi_machdep.c,v 1.7 2013/10/06 16:34:48 jakllsch 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 1.7 2013/10/06 16:34:48 jakllsch 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 
     55 #include <dev/acpi/acpica.h>
     56 #include <dev/acpi/acpivar.h>
     57 
     58 #include <machine/acpi_machdep.h>
     59 #include <machine/mpbiosvar.h>
     60 #include <machine/mpacpi.h>
     61 #include <machine/i82093reg.h>
     62 #include <machine/i82093var.h>
     63 #include <machine/pic.h>
     64 
     65 #include <dev/pci/pcivar.h>
     66 
     67 #include <dev/isa/isareg.h>
     68 #include <dev/isa/isavar.h>
     69 
     70 #include "ioapic.h"
     71 
     72 #include "acpica.h"
     73 #include "opt_mpbios.h"
     74 #include "opt_acpi.h"
     75 
     76 ACPI_STATUS
     77 acpi_md_OsInitialize(void)
     78 {
     79 	return AE_OK;
     80 }
     81 
     82 ACPI_PHYSICAL_ADDRESS
     83 acpi_md_OsGetRootPointer(void)
     84 {
     85 	ACPI_PHYSICAL_ADDRESS PhysicalAddress;
     86 	ACPI_STATUS Status;
     87 
     88 	Status = AcpiFindRootPointer(&PhysicalAddress);
     89 
     90 	if (ACPI_FAILURE(Status))
     91 		PhysicalAddress = 0;
     92 
     93 	return PhysicalAddress;
     94 }
     95 
     96 struct acpi_md_override {
     97 	int irq;
     98 	int pin;
     99 	int flags;
    100 };
    101 
    102 static ACPI_STATUS
    103 acpi_md_findoverride(ACPI_SUBTABLE_HEADER *hdrp, void *aux)
    104 {
    105 	ACPI_MADT_INTERRUPT_OVERRIDE *iop;
    106 	struct acpi_md_override *ovrp;
    107 
    108 	if (hdrp->Type != ACPI_MADT_TYPE_INTERRUPT_OVERRIDE) {
    109 		return AE_OK;
    110 	}
    111 
    112 	iop = (void *)hdrp;
    113 	ovrp = aux;
    114 	if (iop->SourceIrq == ovrp->irq) {
    115 		ovrp->pin = iop->GlobalIrq;
    116 		ovrp->flags = iop->IntiFlags;
    117 	}
    118 	return AE_OK;
    119 }
    120 
    121 ACPI_STATUS
    122 acpi_md_OsInstallInterruptHandler(uint32_t InterruptNumber,
    123     ACPI_OSD_HANDLER ServiceRoutine, void *Context, void **cookiep)
    124 {
    125 	void *ih;
    126 	struct pic *pic;
    127 #if NIOAPIC > 0
    128 	struct ioapic_softc *sc;
    129 	struct acpi_md_override ovr;
    130 	struct mp_intr_map tmpmap, *mip, **mipp = NULL;
    131 #endif
    132 	int irq, pin, type, redir, mpflags;
    133 
    134 	/*
    135 	 * ACPI interrupts default to level-triggered active-low.
    136 	 */
    137 
    138 	type = IST_LEVEL;
    139 	mpflags = (MPS_INTTR_LEVEL << 2) | MPS_INTPO_ACTLO;
    140 	redir = IOAPIC_REDLO_LEVEL | IOAPIC_REDLO_ACTLO;
    141 
    142 #if NIOAPIC > 0
    143 
    144 	/*
    145 	 * Apply any MADT override setting.
    146 	 */
    147 
    148 	ovr.irq = InterruptNumber;
    149 	ovr.pin = -1;
    150 	if (acpi_madt_map() == AE_OK) {
    151 		acpi_madt_walk(acpi_md_findoverride, &ovr);
    152 		acpi_madt_unmap();
    153 	} else {
    154 		aprint_debug("acpi_madt_map() failed, can't check for MADT override\n");
    155 	}
    156 
    157 	if (ovr.pin != -1) {
    158 		bool sci = InterruptNumber == AcpiGbl_FADT.SciInterrupt;
    159 		int polarity = ovr.flags & ACPI_MADT_POLARITY_MASK;
    160 		int trigger = ovr.flags & ACPI_MADT_TRIGGER_MASK;
    161 
    162 		InterruptNumber = ovr.pin;
    163 		if (polarity == ACPI_MADT_POLARITY_ACTIVE_HIGH ||
    164 		    (!sci && polarity == ACPI_MADT_POLARITY_CONFORMS)) {
    165 			mpflags &= ~MPS_INTPO_ACTLO;
    166 			mpflags |= MPS_INTPO_ACTHI;
    167 			redir &= ~IOAPIC_REDLO_ACTLO;
    168 		}
    169 		if (trigger == ACPI_MADT_TRIGGER_EDGE ||
    170 		    (!sci && trigger == ACPI_MADT_TRIGGER_CONFORMS)) {
    171 			type = IST_EDGE;
    172 			mpflags &= ~(MPS_INTTR_LEVEL << 2);
    173 			mpflags |= (MPS_INTTR_EDGE << 2);
    174 			redir &= ~IOAPIC_REDLO_LEVEL;
    175 		}
    176 	}
    177 
    178 	/*
    179 	 * If the interrupt is handled via IOAPIC, update the map.
    180 	 * If the map isn't set up yet, install a temporary one.
    181 	 */
    182 
    183 	sc = ioapic_find_bybase(InterruptNumber);
    184 	if (sc != NULL) {
    185 		pic = &sc->sc_pic;
    186 
    187 		if (pic->pic_type == PIC_IOAPIC) {
    188 			pin = (int)InterruptNumber - pic->pic_vecbase;
    189 			irq = -1;
    190 		} else {
    191 			irq = pin = (int)InterruptNumber;
    192 		}
    193 
    194 		mip = sc->sc_pins[pin].ip_map;
    195 		if (mip) {
    196 			mip->flags &= ~0xf;
    197 			mip->flags |= mpflags;
    198 			mip->redir &= ~(IOAPIC_REDLO_LEVEL |
    199 					IOAPIC_REDLO_ACTLO);
    200 			mip->redir |= redir;
    201 		} else {
    202 			mipp = &sc->sc_pins[pin].ip_map;
    203 			*mipp = &tmpmap;
    204 			tmpmap.redir = redir;
    205 			tmpmap.flags = mpflags;
    206 		}
    207 	} else
    208 #endif
    209 	{
    210 		pic = &i8259_pic;
    211 		irq = pin = (int)InterruptNumber;
    212 	}
    213 
    214 	/*
    215 	 * XXX probably, IPL_BIO is enough.
    216 	 */
    217 	ih = intr_establish(irq, pic, pin, type, IPL_TTY,
    218 	    (int (*)(void *)) ServiceRoutine, Context, false);
    219 
    220 #if NIOAPIC > 0
    221 	if (mipp) {
    222 		*mipp = NULL;
    223 	}
    224 #endif
    225 
    226 	if (ih == NULL)
    227 		return AE_NO_MEMORY;
    228 
    229 	*cookiep = ih;
    230 
    231 	return AE_OK;
    232 }
    233 
    234 void
    235 acpi_md_OsRemoveInterruptHandler(void *cookie)
    236 {
    237 	intr_disestablish(cookie);
    238 }
    239 
    240 ACPI_STATUS
    241 acpi_md_OsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress,
    242     uint32_t Length, void **LogicalAddress)
    243 {
    244 	int rv;
    245 
    246 	rv = _x86_memio_map(x86_bus_space_mem, PhysicalAddress,
    247 	    Length, 0, (bus_space_handle_t *)LogicalAddress);
    248 
    249 	return (rv != 0) ? AE_NO_MEMORY : AE_OK;
    250 }
    251 
    252 void
    253 acpi_md_OsUnmapMemory(void *LogicalAddress, uint32_t Length)
    254 {
    255 	(void) _x86_memio_unmap(x86_bus_space_mem,
    256 	    (bus_space_handle_t)LogicalAddress, Length, NULL);
    257 }
    258 
    259 ACPI_STATUS
    260 acpi_md_OsGetPhysicalAddress(void *LogicalAddress,
    261     ACPI_PHYSICAL_ADDRESS *PhysicalAddress)
    262 {
    263 	paddr_t pa;
    264 
    265 	if (pmap_extract(pmap_kernel(), (vaddr_t) LogicalAddress, &pa)) {
    266 		*PhysicalAddress = pa;
    267 		return AE_OK;
    268 	}
    269 
    270 	return AE_ERROR;
    271 }
    272 
    273 BOOLEAN
    274 acpi_md_OsReadable(void *Pointer, uint32_t Length)
    275 {
    276 	BOOLEAN rv = TRUE;
    277 	vaddr_t sva, eva;
    278 	pt_entry_t *pte;
    279 
    280 	sva = trunc_page((vaddr_t) Pointer);
    281 	eva = round_page((vaddr_t) Pointer + Length);
    282 
    283 	if (sva < VM_MIN_KERNEL_ADDRESS)
    284 		return FALSE;
    285 
    286 	for (; sva < eva; sva += PAGE_SIZE) {
    287 		pte = kvtopte(sva);
    288 		if ((*pte & PG_V) == 0) {
    289 			rv = FALSE;
    290 			break;
    291 		}
    292 	}
    293 
    294 	return rv;
    295 }
    296 
    297 BOOLEAN
    298 acpi_md_OsWritable(void *Pointer, uint32_t Length)
    299 {
    300 	BOOLEAN rv = TRUE;
    301 	vaddr_t sva, eva;
    302 	pt_entry_t *pte;
    303 
    304 	sva = trunc_page((vaddr_t) Pointer);
    305 	eva = round_page((vaddr_t) Pointer + Length);
    306 
    307 	if (sva < VM_MIN_KERNEL_ADDRESS)
    308 		return FALSE;
    309 
    310 	for (; sva < eva; sva += PAGE_SIZE) {
    311 		pte = kvtopte(sva);
    312 		if ((*pte & (PG_V|PG_W)) != (PG_V|PG_W)) {
    313 			rv = FALSE;
    314 			break;
    315 		}
    316 	}
    317 
    318 	return rv;
    319 }
    320 
    321 void
    322 acpi_md_OsDisableInterrupt(void)
    323 {
    324 	x86_disable_intr();
    325 }
    326 
    327 void
    328 acpi_md_OsEnableInterrupt(void)
    329 {
    330 	x86_enable_intr();
    331 }
    332 
    333 uint32_t
    334 acpi_md_ncpus(void)
    335 {
    336 	return kcpuset_countset(kcpuset_attached);
    337 }
    338 
    339 void
    340 acpi_md_callback(struct acpi_softc *sc)
    341 {
    342 #ifdef MPBIOS
    343 	if (!mpbios_scanned)
    344 #endif
    345 	mpacpi_find_interrupts(sc);
    346 
    347 #ifndef XEN
    348 	acpi_md_sleep_init();
    349 #endif
    350 }
    351