7029da5c36
r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are still not MPSAFE (or already are but aren’t properly marked). Use it in preparation for a general review of all nodes. This is non-functional change that adds annotations to SYSCTL_NODE and SYSCTL_PROC nodes using one of the soon-to-be-required flags. Mark all obvious cases as MPSAFE. All entries that haven't been marked as MPSAFE before are by default marked as NEEDGIANT Approved by: kib (mentor, blanket) Commented by: kib, gallatin, melifaro Differential Revision: https://reviews.freebsd.org/D23718
258 lines
7.8 KiB
C
258 lines
7.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2002-2004 M. Warner Losh <imp@FreeBSD.org>
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Driver for ISA to PCMCIA bridges compliant with the Intel ExCA
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* specification.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/condvar.h>
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#include <sys/errno.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/sysctl.h>
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#include <sys/kthread.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <isa/isavar.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcib_private.h>
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#include <dev/pccard/pccardreg.h>
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#include <dev/pccard/pccardvar.h>
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#include <dev/exca/excareg.h>
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#include <dev/exca/excavar.h>
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#include <dev/pccbb/pccbbreg.h>
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#include <dev/pccbb/pccbbvar.h>
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#include "power_if.h"
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#include "card_if.h"
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/*****************************************************************************
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* Configurable parameters.
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*****************************************************************************/
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/* sysctl vars */
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static SYSCTL_NODE(_hw, OID_AUTO, pcic, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
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"PCIC parameters");
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static int isa_intr_mask = EXCA_INT_MASK_ALLOWED;
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SYSCTL_INT(_hw_pcic, OID_AUTO, intr_mask, CTLFLAG_RDTUN, &isa_intr_mask, 0,
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"Mask of allowable interrupts for this laptop. The default is generally"
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" correct, but some laptops do not route all the IRQ pins to the bridge to"
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" save wires. Sometimes you need a more restrictive mask because some of"
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" the hardware in your laptop may not have a driver so its IRQ might not be"
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" allocated.");
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/*
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* CL-PD6722's VSENSE method
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* 0: NO VSENSE (assume a 5.0V card always)
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* 1: 6710's method (default)
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* 2: 6729's method
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*/
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int pcic_pd6722_vsense = 1;
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SYSCTL_INT(_hw_pcic, OID_AUTO, pd6722_vsense, CTLFLAG_RDTUN,
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&pcic_pd6722_vsense, 1,
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"Select CL-PD6722's VSENSE method. VSENSE is used to determine the"
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" voltage of inserted cards. The CL-PD6722 has two methods to determine"
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" the voltage of the card. 0 means assume a 5.0V card and do not check. 1"
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" means use the same method that the CL-PD6710 uses (default). 2 means use"
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" the same method as the CL-PD6729. 2 is documented in the datasheet as"
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" being the correct way, but 1 seems to give better results on more"
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" laptops.");
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/*****************************************************************************
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* End of configurable parameters.
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*****************************************************************************/
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#define DPRINTF(x) do { if (cbb_debug) printf x; } while (0)
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#define DEVPRINTF(x) do { if (cbb_debug) device_printf x; } while (0)
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static struct isa_pnp_id pcic_ids[] = {
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{EXCA_PNP_ACTIONTEC, NULL}, /* AEI0218 */
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{EXCA_PNP_IBM3765, NULL}, /* IBM3765 */
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{EXCA_PNP_82365, NULL}, /* PNP0E00 */
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{EXCA_PNP_CL_PD6720, NULL}, /* PNP0E01 */
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{EXCA_PNP_VLSI_82C146, NULL}, /* PNP0E02 */
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{EXCA_PNP_82365_CARDBUS, NULL}, /* PNP0E03 */
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{EXCA_PNP_SCM_SWAPBOX, NULL}, /* SCM0469 */
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{0}
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};
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/************************************************************************/
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/* Probe/Attach */
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/************************************************************************/
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static int
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cbb_isa_activate(device_t dev)
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{
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struct cbb_softc *sc = device_get_softc(dev);
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struct resource *res;
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int rid;
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int i;
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/* A little bogus, but go ahead and get the irq for CSC events */
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rid = 0;
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res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
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if (res == NULL) {
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/*
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* No IRQ specified, find one. This can be due to the PnP
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* data not specifying any IRQ, or the default kernel not
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* assinging an IRQ.
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*/
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for (i = 0; i < 16 && res == NULL; i++) {
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if (((1 << i) & isa_intr_mask) == 0)
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continue;
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res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, i, i,
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1, RF_ACTIVE);
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}
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}
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if (res == NULL)
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return (ENXIO);
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sc->irq_res = res;
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rid = 0;
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res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
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if (res == NULL) {
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bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res);
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sc->irq_res = NULL;
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device_printf(dev, "Cannot allocate I/O\n");
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return (ENOMEM);
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}
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sc->bst = rman_get_bustag(res);
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sc->bsh = rman_get_bushandle(res);
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sc->base_res = res;
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return (0);
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}
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static void
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cbb_isa_deactivate(device_t dev)
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{
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struct cbb_softc *sc = device_get_softc(dev);
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if (sc->irq_res)
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bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res);
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sc->irq_res = NULL;
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if (sc->base_res)
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bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->base_res);
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sc->base_res = NULL;
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}
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static int
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cbb_isa_probe(device_t dev)
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{
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int error;
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struct cbb_softc *sc = device_get_softc(dev);
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/* Check isapnp ids */
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error = ISA_PNP_PROBE(device_get_parent(dev), dev, pcic_ids);
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if (error != 0 && error != ENOENT)
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return (error);
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error = cbb_isa_activate(dev);
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if (error != 0)
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return (error);
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/* Check to make sure that we have actual hardware */
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error = exca_probe_slots(dev, &sc->exca[0], sc->bst, sc->bsh);
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cbb_isa_deactivate(dev);
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return (error);
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}
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static int
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cbb_isa_attach(device_t dev)
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{
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return (ENOMEM);
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}
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static int
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cbb_isa_suspend(device_t dev)
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{
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return (0);
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}
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static int
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cbb_isa_resume(device_t dev)
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{
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return (0);
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}
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static device_method_t cbb_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, cbb_isa_probe),
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DEVMETHOD(device_attach, cbb_isa_attach),
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DEVMETHOD(device_detach, cbb_detach),
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DEVMETHOD(device_suspend, cbb_isa_suspend),
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DEVMETHOD(device_resume, cbb_isa_resume),
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/* bus methods */
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DEVMETHOD(bus_read_ivar, cbb_read_ivar),
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DEVMETHOD(bus_write_ivar, cbb_write_ivar),
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DEVMETHOD(bus_alloc_resource, cbb_alloc_resource),
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DEVMETHOD(bus_release_resource, cbb_release_resource),
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DEVMETHOD(bus_activate_resource, cbb_activate_resource),
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DEVMETHOD(bus_deactivate_resource, cbb_deactivate_resource),
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DEVMETHOD(bus_driver_added, cbb_driver_added),
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DEVMETHOD(bus_child_detached, cbb_child_detached),
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DEVMETHOD(bus_setup_intr, cbb_setup_intr),
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DEVMETHOD(bus_teardown_intr, cbb_teardown_intr),
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DEVMETHOD(bus_child_present, cbb_child_present),
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/* 16-bit card interface */
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DEVMETHOD(card_set_res_flags, cbb_pcic_set_res_flags),
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DEVMETHOD(card_set_memory_offset, cbb_pcic_set_memory_offset),
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/* power interface */
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DEVMETHOD(power_enable_socket, cbb_power_enable_socket),
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DEVMETHOD(power_disable_socket, cbb_power_disable_socket),
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DEVMETHOD_END
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};
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static driver_t cbb_isa_driver = {
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"cbb",
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cbb_methods,
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sizeof(struct cbb_softc)
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};
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DRIVER_MODULE(cbb, isa, cbb_isa_driver, cbb_devclass, 0, 0);
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MODULE_DEPEND(cbb, exca, 1, 1, 1);
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ISA_PNP_INFO(pcic_ids);
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