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acpi_machdep.c revision 1.4 
      1 /* $NetBSD: acpi_machdep.c,v 1.4 2012/09/23 00:31:05 chs 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 1.4 2012/09/23 00:31:05 chs 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 ACPI_STATUS
     97 acpi_md_OsInstallInterruptHandler(uint32_t InterruptNumber,
     98     ACPI_OSD_HANDLER ServiceRoutine, void *Context, void **cookiep)
     99 {
    100 	void *ih;
    101 	struct pic *pic;
    102 #if NIOAPIC > 0
    103 	struct ioapic_softc *sc;
    104 #endif
    105 	int irq, pin, trigger;
    106 
    107 #if NIOAPIC > 0
    108 	/*
    109 	 * Can only match on ACPI global interrupt numbers if the ACPI
    110 	 * interrupt info was extracted, which is in the ACPI case.
    111 	 */
    112 	if (mpacpi_sci_override != NULL) {
    113 		pic = mpacpi_sci_override->ioapic;
    114 		pin = mpacpi_sci_override->ioapic_pin;
    115 		if (mpacpi_sci_override->redir & IOAPIC_REDLO_LEVEL)
    116 			trigger = IST_LEVEL;
    117 		else
    118 			trigger = IST_EDGE;
    119 		if (pic->pic_type == PIC_IOAPIC)
    120 			irq = -1;
    121 		else
    122 			irq = (int)InterruptNumber;
    123 		goto sci_override;
    124 	}
    125 #endif
    126 
    127 	/*
    128 	 * There was no ACPI interrupt source override,
    129 	 *
    130 	 * If the interrupt is handled via IOAPIC, mark it
    131 	 * as level-triggered, active low in the table.
    132 	 */
    133 
    134 #if NIOAPIC > 0
    135 	sc = ioapic_find_bybase(InterruptNumber);
    136 	if (sc != NULL) {
    137 		pic = &sc->sc_pic;
    138 		struct mp_intr_map *mip;
    139 
    140 		if (pic->pic_type == PIC_IOAPIC) {
    141 			pin = (int)InterruptNumber - pic->pic_vecbase;
    142 			irq = -1;
    143 		} else {
    144 			irq = pin = (int)InterruptNumber;
    145 		}
    146 
    147 		mip = sc->sc_pins[pin].ip_map;
    148 		if (mip) {
    149 			mip->flags &= ~3;
    150 			mip->flags |= MPS_INTPO_ACTLO;
    151 			mip->redir |= IOAPIC_REDLO_ACTLO;
    152 		}
    153 	} else
    154 #endif
    155 	{
    156 		pic = &i8259_pic;
    157 		irq = pin = (int)InterruptNumber;
    158 	}
    159 
    160 	trigger = IST_LEVEL;
    161 
    162 #if NIOAPIC > 0
    163 sci_override:
    164 #endif
    165 
    166 	/*
    167 	 * XXX probably, IPL_BIO is enough.
    168 	 */
    169 	ih = intr_establish(irq, pic, pin, trigger, IPL_TTY,
    170 	    (int (*)(void *)) ServiceRoutine, Context, false);
    171 
    172 	if (ih == NULL)
    173 		return AE_NO_MEMORY;
    174 
    175 	*cookiep = ih;
    176 
    177 	return AE_OK;
    178 }
    179 
    180 void
    181 acpi_md_OsRemoveInterruptHandler(void *cookie)
    182 {
    183 	intr_disestablish(cookie);
    184 }
    185 
    186 ACPI_STATUS
    187 acpi_md_OsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress,
    188     uint32_t Length, void **LogicalAddress)
    189 {
    190 	int rv;
    191 
    192 	rv = _x86_memio_map(x86_bus_space_mem, PhysicalAddress,
    193 	    Length, 0, (bus_space_handle_t *)LogicalAddress);
    194 
    195 	return (rv != 0) ? AE_NO_MEMORY : AE_OK;
    196 }
    197 
    198 void
    199 acpi_md_OsUnmapMemory(void *LogicalAddress, uint32_t Length)
    200 {
    201 	(void) _x86_memio_unmap(x86_bus_space_mem,
    202 	    (bus_space_handle_t)LogicalAddress, Length, NULL);
    203 }
    204 
    205 ACPI_STATUS
    206 acpi_md_OsGetPhysicalAddress(void *LogicalAddress,
    207     ACPI_PHYSICAL_ADDRESS *PhysicalAddress)
    208 {
    209 	paddr_t pa;
    210 
    211 	if (pmap_extract(pmap_kernel(), (vaddr_t) LogicalAddress, &pa)) {
    212 		*PhysicalAddress = pa;
    213 		return AE_OK;
    214 	}
    215 
    216 	return AE_ERROR;
    217 }
    218 
    219 BOOLEAN
    220 acpi_md_OsReadable(void *Pointer, uint32_t Length)
    221 {
    222 	BOOLEAN rv = TRUE;
    223 	vaddr_t sva, eva;
    224 	pt_entry_t *pte;
    225 
    226 	sva = trunc_page((vaddr_t) Pointer);
    227 	eva = round_page((vaddr_t) Pointer + Length);
    228 
    229 	if (sva < VM_MIN_KERNEL_ADDRESS)
    230 		return FALSE;
    231 
    232 	for (; sva < eva; sva += PAGE_SIZE) {
    233 		pte = kvtopte(sva);
    234 		if ((*pte & PG_V) == 0) {
    235 			rv = FALSE;
    236 			break;
    237 		}
    238 	}
    239 
    240 	return rv;
    241 }
    242 
    243 BOOLEAN
    244 acpi_md_OsWritable(void *Pointer, uint32_t Length)
    245 {
    246 	BOOLEAN rv = FALSE;
    247 	vaddr_t sva, eva;
    248 	pt_entry_t *pte;
    249 
    250 	sva = trunc_page((vaddr_t) Pointer);
    251 	eva = round_page((vaddr_t) Pointer + Length);
    252 
    253 	if (sva < VM_MIN_KERNEL_ADDRESS)
    254 		return FALSE;
    255 
    256 	for (; sva < eva; sva += PAGE_SIZE) {
    257 		pte = kvtopte(sva);
    258 		if ((*pte & (PG_V|PG_W)) != (PG_V|PG_W)) {
    259 			rv = FALSE;
    260 			break;
    261 		}
    262 	}
    263 
    264 	return rv;
    265 }
    266 
    267 void
    268 acpi_md_OsDisableInterrupt(void)
    269 {
    270 	x86_disable_intr();
    271 }
    272 
    273 void
    274 acpi_md_OsEnableInterrupt(void)
    275 {
    276 	x86_enable_intr();
    277 }
    278 
    279 uint32_t
    280 acpi_md_ncpus(void)
    281 {
    282 	return kcpuset_countset(kcpuset_attached);
    283 }
    284 
    285 void
    286 acpi_md_callback(struct acpi_softc *sc)
    287 {
    288 #ifdef MPBIOS
    289 	if (!mpbios_scanned)
    290 #endif
    291 	mpacpi_find_interrupts(sc);
    292 
    293 #ifndef XEN
    294 	acpi_md_sleep_init();
    295 #endif
    296 }
    297