/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2002-2004 M. Warner Losh <imp@FreeBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Driver for ISA to PCMCIA bridges compliant with the Intel ExCA
* specification.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/condvar.h>
#include <sys/errno.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/sysctl.h>
#include <sys/kthread.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <isa/isavar.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcib_private.h>
#include <dev/pccard/pccardreg.h>
#include <dev/pccard/pccardvar.h>
#include <dev/exca/excareg.h>
#include <dev/exca/excavar.h>
#include <dev/pccbb/pccbbreg.h>
#include <dev/pccbb/pccbbvar.h>
#include "power_if.h"
#include "card_if.h"
/*****************************************************************************
* Configurable parameters.
*****************************************************************************/
/* sysctl vars */
static SYSCTL_NODE(_hw, OID_AUTO, pcic, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
"PCIC parameters");
static int isa_intr_mask = EXCA_INT_MASK_ALLOWED;
SYSCTL_INT(_hw_pcic, OID_AUTO, intr_mask, CTLFLAG_RDTUN, &isa_intr_mask, 0,
"Mask of allowable interrupts for this laptop. The default is generally"
" correct, but some laptops do not route all the IRQ pins to the bridge to"
" save wires. Sometimes you need a more restrictive mask because some of"
" the hardware in your laptop may not have a driver so its IRQ might not be"
" allocated.");
/*
* CL-PD6722's VSENSE method
* 0: NO VSENSE (assume a 5.0V card always)
* 1: 6710's method (default)
* 2: 6729's method
*/
int pcic_pd6722_vsense = 1;
SYSCTL_INT(_hw_pcic, OID_AUTO, pd6722_vsense, CTLFLAG_RDTUN,
&pcic_pd6722_vsense, 1,
"Select CL-PD6722's VSENSE method. VSENSE is used to determine the"
" voltage of inserted cards. The CL-PD6722 has two methods to determine"
" the voltage of the card. 0 means assume a 5.0V card and do not check. 1"
" means use the same method that the CL-PD6710 uses (default). 2 means use"
" the same method as the CL-PD6729. 2 is documented in the datasheet as"
" being the correct way, but 1 seems to give better results on more"
" laptops.");
/*****************************************************************************
* End of configurable parameters.
*****************************************************************************/
#define DPRINTF(x) do { if (cbb_debug) printf x; } while (0)
#define DEVPRINTF(x) do { if (cbb_debug) device_printf x; } while (0)
static struct isa_pnp_id pcic_ids[] = {
{EXCA_PNP_ACTIONTEC, NULL}, /* AEI0218 */
{EXCA_PNP_IBM3765, NULL}, /* IBM3765 */
{EXCA_PNP_82365, NULL}, /* PNP0E00 */
{EXCA_PNP_CL_PD6720, NULL}, /* PNP0E01 */
{EXCA_PNP_VLSI_82C146, NULL}, /* PNP0E02 */
{EXCA_PNP_82365_CARDBUS, NULL}, /* PNP0E03 */
{EXCA_PNP_SCM_SWAPBOX, NULL}, /* SCM0469 */
{0}
};
/************************************************************************/
/* Probe/Attach */
/************************************************************************/
static int
cbb_isa_activate(device_t dev)
{
struct cbb_softc *sc = device_get_softc(dev);
struct resource *res;
int rid;
int i;
/* A little bogus, but go ahead and get the irq for CSC events */
rid = 0;
res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
if (res == NULL) {
/*
* No IRQ specified, find one. This can be due to the PnP
* data not specifying any IRQ, or the default kernel not
* assinging an IRQ.
*/
for (i = 0; i < 16 && res == NULL; i++) {
if (((1 << i) & isa_intr_mask) == 0)
continue;
res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, i, i,
1, RF_ACTIVE);
}
}
if (res == NULL)
return (ENXIO);
sc->irq_res = res;
rid = 0;
res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
if (res == NULL) {
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res);
sc->irq_res = NULL;
device_printf(dev, "Cannot allocate I/O\n");
return (ENOMEM);
}
sc->bst = rman_get_bustag(res);
sc->bsh = rman_get_bushandle(res);
sc->base_res = res;
return (0);
}
static void
cbb_isa_deactivate(device_t dev)
{
struct cbb_softc *sc = device_get_softc(dev);
if (sc->irq_res)
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res);
sc->irq_res = NULL;
if (sc->base_res)
bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->base_res);
sc->base_res = NULL;
}
static int
cbb_isa_probe(device_t dev)
{
int error;
struct cbb_softc *sc = device_get_softc(dev);
/* Check isapnp ids */
error = ISA_PNP_PROBE(device_get_parent(dev), dev, pcic_ids);
if (error != 0 && error != ENOENT)
return (error);
error = cbb_isa_activate(dev);
if (error != 0)
return (error);
/* Check to make sure that we have actual hardware */
error = exca_probe_slots(dev, &sc->exca[0], sc->bst, sc->bsh);
cbb_isa_deactivate(dev);
return (error);
}
static int
cbb_isa_attach(device_t dev)
{
return (ENOMEM);
}
static int
cbb_isa_suspend(device_t dev)
{
return (0);
}
static int
cbb_isa_resume(device_t dev)
{
return (0);
}
static device_method_t cbb_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, cbb_isa_probe),
DEVMETHOD(device_attach, cbb_isa_attach),
DEVMETHOD(device_detach, cbb_detach),
DEVMETHOD(device_suspend, cbb_isa_suspend),
DEVMETHOD(device_resume, cbb_isa_resume),
/* bus methods */
DEVMETHOD(bus_read_ivar, cbb_read_ivar),
DEVMETHOD(bus_write_ivar, cbb_write_ivar),
DEVMETHOD(bus_alloc_resource, cbb_alloc_resource),
DEVMETHOD(bus_release_resource, cbb_release_resource),
DEVMETHOD(bus_activate_resource, cbb_activate_resource),
DEVMETHOD(bus_deactivate_resource, cbb_deactivate_resource),
DEVMETHOD(bus_driver_added, cbb_driver_added),
DEVMETHOD(bus_child_detached, cbb_child_detached),
DEVMETHOD(bus_setup_intr, cbb_setup_intr),
DEVMETHOD(bus_teardown_intr, cbb_teardown_intr),
DEVMETHOD(bus_child_present, cbb_child_present),
/* 16-bit card interface */
DEVMETHOD(card_set_res_flags, cbb_pcic_set_res_flags),
DEVMETHOD(card_set_memory_offset, cbb_pcic_set_memory_offset),
/* power interface */
DEVMETHOD(power_enable_socket, cbb_power_enable_socket),
DEVMETHOD(power_disable_socket, cbb_power_disable_socket),
DEVMETHOD_END
};
static driver_t cbb_isa_driver = {
"cbb",
cbb_methods,
sizeof(struct cbb_softc)
};
DRIVER_MODULE(cbb, isa, cbb_isa_driver, cbb_devclass, 0, 0);
MODULE_DEPEND(cbb, exca, 1, 1, 1);
ISA_PNP_INFO(pcic_ids);