273 lines
7.3 KiB
C
273 lines
7.3 KiB
C
/* $NetBSD: pckbc_acpi.c,v 1.34 2013/10/17 21:19:03 christos Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* ACPI attachment for the PC Keyboard Controller driver.
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*
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* This is a little wonky. The keyboard controller actually
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* has 2 ACPI nodes: one for the controller and the keyboard
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* interrupt, and one for the aux port (mouse) interrupt.
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*
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* For this reason, we actually attach *two* instances of this
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* driver. After both of them have been found, then we attach
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* sub-devices.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: pckbc_acpi.c,v 1.34 2013/10/17 21:19:03 christos Exp $");
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#include <sys/param.h>
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#include <sys/callout.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <sys/systm.h>
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#include <dev/acpi/acpivar.h>
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#include <dev/isa/isareg.h>
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#include <dev/ic/i8042reg.h>
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#include <dev/ic/pckbcvar.h>
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static int pckbc_acpi_match(device_t, cfdata_t, void *);
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static void pckbc_acpi_attach(device_t, device_t, void *);
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struct pckbc_acpi_softc {
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struct pckbc_softc sc_pckbc;
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isa_chipset_tag_t sc_ic;
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int sc_irq;
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int sc_ist;
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pckbc_slot_t sc_slot;
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};
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/* Save first port: */
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static struct pckbc_acpi_softc *first;
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extern struct cfdriver pckbc_cd;
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CFATTACH_DECL_NEW(pckbc_acpi, sizeof(struct pckbc_acpi_softc),
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pckbc_acpi_match, pckbc_acpi_attach, NULL, NULL);
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static void pckbc_acpi_intr_establish(struct pckbc_softc *, pckbc_slot_t);
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static void pckbc_acpi_finish_attach(device_t);
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/*
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* Supported Device IDs
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*/
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static const char * const pckbc_acpi_ids_kbd[] = {
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"PNP03??", /* Standard PC KBD port */
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NULL
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};
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static const char * const pckbc_acpi_ids_ms[] = {
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"PNP0F03",
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"PNP0F0E",
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"PNP0F12",
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"PNP0F13",
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"PNP0F19",
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"PNP0F1B",
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"PNP0F1C",
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"SYN0302",
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NULL
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};
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/*
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* pckbc_acpi_match: autoconf(9) match routine
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*/
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static int
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pckbc_acpi_match(device_t parent, cfdata_t match, void *aux)
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{
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struct acpi_attach_args *aa = aux;
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int rv;
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if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
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return 0;
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rv = acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_kbd);
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if (rv)
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return rv;
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rv = acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_ms);
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if (rv)
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return rv;
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return 0;
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}
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static void
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pckbc_acpi_attach(device_t parent, device_t self, void *aux)
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{
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struct pckbc_acpi_softc *psc = device_private(self);
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struct pckbc_softc *sc = &psc->sc_pckbc;
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struct pckbc_internal *t;
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struct acpi_attach_args *aa = aux;
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bus_space_handle_t ioh_d, ioh_c;
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struct acpi_resources res;
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struct acpi_io *io0, *io1, *ioswap;
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struct acpi_irq *irq;
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ACPI_STATUS rv;
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sc->sc_dv = self;
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psc->sc_ic = aa->aa_ic;
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if (acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_kbd)) {
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psc->sc_slot = PCKBC_KBD_SLOT;
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} else if (acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_ms)) {
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psc->sc_slot = PCKBC_AUX_SLOT;
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} else {
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aprint_error(": unknown port!\n");
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panic("pckbc_acpi_attach: impossible");
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}
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aprint_normal(" (%s port)", pckbc_slot_names[psc->sc_slot]);
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/* parse resources */
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rv = acpi_resource_parse(sc->sc_dv, aa->aa_node->ad_handle, "_CRS",
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&res, &acpi_resource_parse_ops_default);
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if (ACPI_FAILURE(rv))
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return;
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/* find our IRQ */
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irq = acpi_res_irq(&res, 0);
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if (irq == NULL) {
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aprint_error_dev(self, "unable to find irq resource\n");
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goto out;
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}
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psc->sc_irq = irq->ar_irq;
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psc->sc_ist = (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL;
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if (psc->sc_slot == PCKBC_KBD_SLOT)
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first = psc;
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if ((!first || !first->sc_pckbc.id) &&
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(psc->sc_slot == PCKBC_KBD_SLOT)) {
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io0 = acpi_res_io(&res, 0);
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io1 = acpi_res_io(&res, 1);
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if (io0 == NULL || io1 == NULL) {
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aprint_error_dev(self,
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"unable to find i/o resources\n");
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goto out;
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}
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/*
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* JDM: Some firmware doesn't report resources in the order we
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* expect; sort IO resources here (lowest first)
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*/
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if (io0->ar_base > io1->ar_base) {
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ioswap = io0;
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io0 = io1;
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io1 = ioswap;
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}
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if (pckbc_is_console(aa->aa_iot, io0->ar_base)) {
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t = &pckbc_consdata;
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ioh_d = t->t_ioh_d;
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ioh_c = t->t_ioh_c;
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pckbc_console_attached = 1;
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/* t->t_cmdbyte was initialized by cnattach */
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} else {
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if (bus_space_map(aa->aa_iot, io0->ar_base,
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io0->ar_length, 0, &ioh_d) ||
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bus_space_map(aa->aa_iot, io1->ar_base,
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io1->ar_length, 0, &ioh_c)) {
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aprint_error_dev(self,
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"unable to map registers\n");
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goto out;
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}
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t = malloc(sizeof(struct pckbc_internal),
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M_DEVBUF, M_WAITOK|M_ZERO);
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t->t_iot = aa->aa_iot;
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t->t_ioh_d = ioh_d;
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t->t_ioh_c = ioh_c;
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t->t_addr = io0->ar_base;
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t->t_cmdbyte = KC8_CPU; /* Enable ports */
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callout_init(&t->t_cleanup, 0);
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}
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t->t_sc = &first->sc_pckbc;
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first->sc_pckbc.id = t;
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if (!pmf_device_register(self, NULL, pckbc_resume))
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aprint_error_dev(self,
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"couldn't establish power handler\n");
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first->sc_pckbc.intr_establish = pckbc_acpi_intr_establish;
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config_defer(first->sc_pckbc.sc_dv, pckbc_acpi_finish_attach);
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}
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out:
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if (!pmf_device_register(self, NULL, NULL))
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aprint_error_dev(self, "couldn't establish power handler\n");
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acpi_resource_cleanup(&res);
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}
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static void
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pckbc_acpi_intr_establish(struct pckbc_softc *sc, pckbc_slot_t slot)
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{
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struct pckbc_acpi_softc *psc;
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isa_chipset_tag_t ic = NULL;
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void *rv = NULL;
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int irq = 0, ist = 0; /* XXX: gcc */
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int i;
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/*
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* Note we're always called with sc == first.
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*/
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for (i = 0; i < pckbc_cd.cd_ndevs; i++) {
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psc = device_lookup_private(&pckbc_cd, i);
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if (psc && psc->sc_slot == slot) {
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irq = psc->sc_irq;
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ist = psc->sc_ist;
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ic = psc->sc_ic;
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break;
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}
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}
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if (i < pckbc_cd.cd_ndevs)
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rv = isa_intr_establish(ic, irq, ist, IPL_TTY, pckbcintr, sc);
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if (rv == NULL) {
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aprint_error_dev(sc->sc_dv,
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"unable to establish interrupt for %s slot\n",
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pckbc_slot_names[slot]);
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} else {
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aprint_normal_dev(sc->sc_dv, "using irq %d for %s slot\n",
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irq, pckbc_slot_names[slot]);
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}
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}
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static void
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pckbc_acpi_finish_attach(device_t dv)
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{
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pckbc_attach(device_private(dv));
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}
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