/*-
* Copyright (c) 2003-2008 M. Warner Losh. All Rights Reserved.
* Copyright (c) 2000,2001 Jonathan Chen. All rights reserved.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <sys/pciio.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pci_private.h>
#include <dev/cardbus/cardbusreg.h>
#include <dev/cardbus/cardbusvar.h>
#include <dev/cardbus/cardbus_cis.h>
#include <dev/pccard/pccard_cis.h>
#include <dev/pccard/pccardvar.h>
#include "power_if.h"
#include "pcib_if.h"
/* sysctl vars */
static SYSCTL_NODE(_hw, OID_AUTO, cardbus, CTLFLAG_RD, 0, "CardBus parameters");
int cardbus_debug = 0;
SYSCTL_INT(_hw_cardbus, OID_AUTO, debug, CTLFLAG_RWTUN,
&cardbus_debug, 0, "CardBus debug");
int cardbus_cis_debug = 0;
SYSCTL_INT(_hw_cardbus, OID_AUTO, cis_debug, CTLFLAG_RWTUN,
&cardbus_cis_debug, 0, "CardBus CIS debug");
#define DPRINTF(a) if (cardbus_debug) printf a
#define DEVPRINTF(x) if (cardbus_debug) device_printf x
static int cardbus_attach(device_t cbdev);
static int cardbus_attach_card(device_t cbdev);
static int cardbus_detach(device_t cbdev);
static int cardbus_detach_card(device_t cbdev);
static void cardbus_device_setup_regs(pcicfgregs *cfg);
static void cardbus_driver_added(device_t cbdev, driver_t *driver);
static int cardbus_probe(device_t cbdev);
static int cardbus_read_ivar(device_t cbdev, device_t child, int which,
uintptr_t *result);
/************************************************************************/
/* Probe/Attach */
/************************************************************************/
static int
cardbus_probe(device_t cbdev)
{
device_set_desc(cbdev, "CardBus bus");
return (0);
}
static int
cardbus_attach(device_t cbdev)
{
struct cardbus_softc *sc;
#ifdef PCI_RES_BUS
int rid;
#endif
sc = device_get_softc(cbdev);
sc->sc_dev = cbdev;
#ifdef PCI_RES_BUS
rid = 0;
sc->sc_bus = bus_alloc_resource(cbdev, PCI_RES_BUS, &rid,
pcib_get_bus(cbdev), pcib_get_bus(cbdev), 1, 0);
if (sc->sc_bus == NULL) {
device_printf(cbdev, "failed to allocate bus number\n");
return (ENXIO);
}
#else
device_printf(cbdev, "Your bus numbers may be AFU\n");
#endif
return (0);
}
static int
cardbus_detach(device_t cbdev)
{
#ifdef PCI_RES_BUS
struct cardbus_softc *sc;
#endif
cardbus_detach_card(cbdev);
#ifdef PCI_RES_BUS
sc = device_get_softc(cbdev);
device_printf(cbdev, "Freeing up the allocatd bus\n");
(void)bus_release_resource(cbdev, PCI_RES_BUS, 0, sc->sc_bus);
#endif
return (0);
}
static int
cardbus_suspend(device_t self)
{
cardbus_detach_card(self);
return (0);
}
static int
cardbus_resume(device_t self)
{
return (0);
}
/************************************************************************/
/* Attach/Detach card */
/************************************************************************/
static void
cardbus_device_setup_regs(pcicfgregs *cfg)
{
device_t dev = cfg->dev;
int i;
/*
* Some cards power up with garbage in their BARs. This
* code clears all that junk out.
*/
for (i = 0; i < PCIR_MAX_BAR_0; i++)
pci_write_config(dev, PCIR_BAR(i), 0, 4);
cfg->intline =
pci_get_irq(device_get_parent(device_get_parent(dev)));
pci_write_config(dev, PCIR_INTLINE, cfg->intline, 1);
pci_write_config(dev, PCIR_CACHELNSZ, 0x08, 1);
pci_write_config(dev, PCIR_LATTIMER, 0xa8, 1);
pci_write_config(dev, PCIR_MINGNT, 0x14, 1);
pci_write_config(dev, PCIR_MAXLAT, 0x14, 1);
}
static struct pci_devinfo *
cardbus_alloc_devinfo(device_t dev)
{
struct cardbus_devinfo *dinfo;
dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO);
return (&dinfo->pci);
}
static int
cardbus_attach_card(device_t cbdev)
{
device_t brdev = device_get_parent(cbdev);
device_t child;
int bus, domain, slot, func;
int cardattached = 0;
int cardbusfunchigh = 0;
struct cardbus_softc *sc;
sc = device_get_softc(cbdev);
cardbus_detach_card(cbdev); /* detach existing cards */
POWER_DISABLE_SOCKET(brdev, cbdev); /* Turn the socket off first */
POWER_ENABLE_SOCKET(brdev, cbdev);
domain = pcib_get_domain(cbdev);
bus = pcib_get_bus(cbdev);
slot = 0;
/* For each function, set it up and try to attach a driver to it */
for (func = 0; func <= cardbusfunchigh; func++) {
struct cardbus_devinfo *dinfo;
dinfo = (struct cardbus_devinfo *)
pci_read_device(brdev, cbdev, domain, bus, slot, func);
if (dinfo == NULL)
continue;
if (dinfo->pci.cfg.mfdev)
cardbusfunchigh = PCI_FUNCMAX;
child = device_add_child(cbdev, NULL, -1);
if (child == NULL) {
DEVPRINTF((cbdev, "Cannot add child!\n"));
pci_freecfg((struct pci_devinfo *)dinfo);
continue;
}
dinfo->pci.cfg.dev = child;
resource_list_init(&dinfo->pci.resources);
device_set_ivars(child, dinfo);
cardbus_device_create(sc, dinfo, cbdev, child);
if (cardbus_do_cis(cbdev, child) != 0)
DEVPRINTF((cbdev, "Warning: Bogus CIS ignored\n"));
pci_cfg_save(dinfo->pci.cfg.dev, &dinfo->pci, 0);
pci_cfg_restore(dinfo->pci.cfg.dev, &dinfo->pci);
cardbus_device_setup_regs(&dinfo->pci.cfg);
pci_add_resources(cbdev, child, 1, dinfo->mprefetchable);
pci_print_verbose(&dinfo->pci);
if (device_probe_and_attach(child) == 0)
cardattached++;
else
pci_cfg_save(dinfo->pci.cfg.dev, &dinfo->pci, 1);
}
if (cardattached > 0)
return (0);
/* POWER_DISABLE_SOCKET(brdev, cbdev); */
return (ENOENT);
}
static void
cardbus_child_deleted(device_t cbdev, device_t child)
{
struct cardbus_devinfo *dinfo = device_get_ivars(child);
if (dinfo->pci.cfg.dev != child)
device_printf(cbdev, "devinfo dev mismatch\n");
cardbus_device_destroy(dinfo);
pci_child_deleted(cbdev, child);
}
static int
cardbus_detach_card(device_t cbdev)
{
int err = 0;
err = bus_generic_detach(cbdev);
if (err)
return (err);
err = device_delete_children(cbdev);
if (err)
return (err);
POWER_DISABLE_SOCKET(device_get_parent(cbdev), cbdev);
return (err);
}
static void
cardbus_driver_added(device_t cbdev, driver_t *driver)
{
int numdevs;
device_t *devlist;
device_t dev;
int i;
struct cardbus_devinfo *dinfo;
DEVICE_IDENTIFY(driver, cbdev);
if (device_get_children(cbdev, &devlist, &numdevs) != 0)
return;
/*
* If there are no drivers attached, but there are children,
* then power the card up.
*/
for (i = 0; i < numdevs; i++) {
dev = devlist[i];
if (device_get_state(dev) != DS_NOTPRESENT)
break;
}
if (i > 0 && i == numdevs)
POWER_ENABLE_SOCKET(device_get_parent(cbdev), cbdev);
for (i = 0; i < numdevs; i++) {
dev = devlist[i];
if (device_get_state(dev) != DS_NOTPRESENT)
continue;
dinfo = device_get_ivars(dev);
pci_print_verbose(&dinfo->pci);
if (bootverbose)
printf("pci%d:%d:%d:%d: reprobing on driver added\n",
dinfo->pci.cfg.domain, dinfo->pci.cfg.bus,
dinfo->pci.cfg.slot, dinfo->pci.cfg.func);
pci_cfg_restore(dinfo->pci.cfg.dev, &dinfo->pci);
if (device_probe_and_attach(dev) != 0)
pci_cfg_save(dev, &dinfo->pci, 1);
}
free(devlist, M_TEMP);
}
/************************************************************************/
/* Other Bus Methods */
/************************************************************************/
static int
cardbus_read_ivar(device_t cbdev, device_t child, int which, uintptr_t *result)
{
struct cardbus_devinfo *dinfo;
pcicfgregs *cfg;
dinfo = device_get_ivars(child);
cfg = &dinfo->pci.cfg;
switch (which) {
case PCI_IVAR_ETHADDR:
/*
* The generic accessor doesn't deal with failure, so
* we set the return value, then return an error.
*/
if (dinfo->fepresent & (1 << PCCARD_TPLFE_TYPE_LAN_NID)) {
*((uint8_t **) result) = dinfo->funce.lan.nid;
break;
}
*((uint8_t **) result) = NULL;
return (EINVAL);
default:
return (pci_read_ivar(cbdev, child, which, result));
}
return 0;
}
static device_method_t cardbus_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, cardbus_probe),
DEVMETHOD(device_attach, cardbus_attach),
DEVMETHOD(device_detach, cardbus_detach),
DEVMETHOD(device_suspend, cardbus_suspend),
DEVMETHOD(device_resume, cardbus_resume),
/* Bus interface */
DEVMETHOD(bus_child_deleted, cardbus_child_deleted),
DEVMETHOD(bus_get_dma_tag, bus_generic_get_dma_tag),
DEVMETHOD(bus_read_ivar, cardbus_read_ivar),
DEVMETHOD(bus_driver_added, cardbus_driver_added),
/* Card Interface */
DEVMETHOD(card_attach_card, cardbus_attach_card),
DEVMETHOD(card_detach_card, cardbus_detach_card),
/* PCI interface */
DEVMETHOD(pci_alloc_devinfo, cardbus_alloc_devinfo),
{0,0}
};
DEFINE_CLASS_1(cardbus, cardbus_driver, cardbus_methods,
sizeof(struct cardbus_softc), pci_driver);
static devclass_t cardbus_devclass;
DRIVER_MODULE(cardbus, cbb, cardbus_driver, cardbus_devclass, 0, 0);
MODULE_VERSION(cardbus, 1);
