/* $OpenBSD: com_cardbus.c,v 1.30 2007/05/08 21:28:11 deraadt Exp $ */
/* $NetBSD: com_cardbus.c,v 1.4 2000/04/17 09:21:59 joda Exp $ */
/*
* Copyright (c) 2000 Johan Danielsson
* 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.
*
* 3. Neither the name of author nor the names of any contributors may
* be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 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 FOUNDATION 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.
*/
/* This is a driver for CardBus based serial devices. It is less
generic than it could be, but it keeps the complexity down. So far
it assumes that anything that reports itself as a `serial' device
is infact a 16x50 or 8250, which is not necessarily true (in
practice this shouldn't be a problem). It also does not handle
devices in the `multiport serial' or `modem' sub-classes, I've
never seen any of these, so I don't know what they might look like.
If the CardBus device only has one BAR (that is not also the CIS
BAR) listed in the CIS, it is assumed to be the one to use. For
devices with more than one BAR, the list of known devies has to be
updated below. */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/tty.h>
#include <sys/device.h>
#include <dev/cardbus/cardbusvar.h>
#include <dev/pci/pcidevs.h>
#include <dev/pcmcia/pcmciareg.h>
#include "com.h"
#ifdef i386
#include "pccom.h"
#endif
#include <dev/ic/comreg.h>
#if NPCCOM > 0
#include <i386/isa/pccomvar.h>
#endif
#if NCOM > 0
#include <dev/ic/comvar.h>
#endif
#include <dev/ic/ns16550reg.h>
#define com_lcr com_cfcr
struct com_cardbus_softc {
struct com_softc cc_com;
void *cc_ih;
cardbus_devfunc_t cc_ct;
bus_addr_t cc_addr;
cardbusreg_t cc_base;
bus_size_t cc_size;
cardbusreg_t cc_csr;
int cc_cben;
cardbustag_t cc_tag;
cardbusreg_t cc_reg;
int cc_type;
u_char cc_bug;
};
#define DEVNAME(CSC) ((CSC)->cc_com.sc_dev.dv_xname)
int com_cardbus_match(struct device *, void *, void *);
void com_cardbus_attach(struct device *, struct device *, void *);
int com_cardbus_detach(struct device *, int);
void com_cardbus_setup(struct com_cardbus_softc *);
int com_cardbus_enable(struct com_softc *);
void com_cardbus_disable(struct com_softc *);
struct csdev *com_cardbus_find_csdev(struct cardbus_attach_args *);
int com_cardbus_gofigure(struct cardbus_attach_args *,
struct com_cardbus_softc *);
#if NCOM_CARDBUS
struct cfattach com_cardbus_ca = {
sizeof(struct com_cardbus_softc), com_cardbus_match,
com_cardbus_attach, com_cardbus_detach, com_activate
};
#elif NPCCOM_CARDBUS
struct cfattach pccom_cardbus_ca = {
sizeof(struct com_cardbus_softc), com_cardbus_match,
com_cardbus_attach, com_cardbus_detach, com_activate
};
#endif
#define BUG_BROADCOM 0x01
static struct csdev {
u_short vendor;
u_short product;
cardbusreg_t reg;
u_char type;
u_char bug;
} csdevs[] = {
{ PCI_VENDOR_3COM, PCI_PRODUCT_3COM_GLOBALMODEM56,
CARDBUS_BASE0_REG, CARDBUS_MAPREG_TYPE_IO },
{ PCI_VENDOR_3COM, PCI_PRODUCT_3COM_MODEM56,
CARDBUS_BASE0_REG, CARDBUS_MAPREG_TYPE_IO },
{ PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4322,
CARDBUS_BASE0_REG, CARDBUS_MAPREG_TYPE_IO, BUG_BROADCOM },
{ PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_SERIAL,
CARDBUS_BASE0_REG, CARDBUS_MAPREG_TYPE_IO, BUG_BROADCOM },
{ PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_SERIAL_GC,
CARDBUS_BASE0_REG, CARDBUS_MAPREG_TYPE_IO },
{ PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_MODEM56,
CARDBUS_BASE0_REG, CARDBUS_MAPREG_TYPE_IO },
{ PCI_VENDOR_OXFORD2, PCI_PRODUCT_OXFORD2_OXCB950,
CARDBUS_BASE0_REG, CARDBUS_MAPREG_TYPE_IO },
{ PCI_VENDOR_XIRCOM, PCI_PRODUCT_XIRCOM_CBEM56G,
CARDBUS_BASE0_REG, CARDBUS_MAPREG_TYPE_IO },
{ PCI_VENDOR_XIRCOM, PCI_PRODUCT_XIRCOM_MODEM56,
CARDBUS_BASE0_REG, CARDBUS_MAPREG_TYPE_IO }
};
static const int ncsdevs = sizeof(csdevs) / sizeof(csdevs[0]);
struct csdev*
com_cardbus_find_csdev(struct cardbus_attach_args *ca)
{
struct csdev *cp;
for (cp = csdevs; cp < csdevs + ncsdevs; cp++)
if (cp->vendor == CARDBUS_VENDOR(ca->ca_id) &&
cp->product == CARDBUS_PRODUCT(ca->ca_id))
return (cp);
return (NULL);
}
int
com_cardbus_match(struct device *parent, void *match, void *aux)
{
struct cardbus_attach_args *ca = aux;
/* known devices are ok */
if (com_cardbus_find_csdev(ca) != NULL)
return (10);
/* as are serial devices with a known UART */
if (ca->ca_cis.funcid == PCMCIA_FUNCTION_SERIAL &&
ca->ca_cis.funce.serial.uart_present != 0 &&
(ca->ca_cis.funce.serial.uart_type == 0 || /* 8250 */
ca->ca_cis.funce.serial.uart_type == 1 || /* 16450 */
ca->ca_cis.funce.serial.uart_type == 2)) /* 16550 */
return (1);
return (0);
}
int
com_cardbus_gofigure(struct cardbus_attach_args *ca,
struct com_cardbus_softc *csc)
{
int i, index = -1;
cardbusreg_t cis_ptr;
struct csdev *cp;
/* If this device is listed above, use the known values, */
cp = com_cardbus_find_csdev(ca);
if (cp != NULL) {
csc->cc_reg = cp->reg;
csc->cc_type = cp->type;
csc->cc_bug = cp->bug;
return (0);
}
cis_ptr = Cardbus_conf_read(csc->cc_ct, csc->cc_tag, CARDBUS_CIS_REG);
/* otherwise try to deduce which BAR and type to use from CIS. If
there is only one BAR, it must be the one we should use, if
there are more, we're out of luck. */
for (i = 0; i < 7; i++) {
/* ignore zero sized BARs */
if (ca->ca_cis.bar[i].size == 0)
continue;
/* ignore the CIS BAR */
if (CARDBUS_CIS_ASI_BAR(cis_ptr) ==
CARDBUS_CIS_ASI_BAR(ca->ca_cis.bar[i].flags))
continue;
if (index != -1)
goto multi_bar;
index = i;
}
if (index == -1) {
printf(": couldn't find any base address tuple\n");
return (1);
}
csc->cc_reg = CARDBUS_CIS_ASI_BAR(ca->ca_cis.bar[index].flags);
if ((ca->ca_cis.bar[index].flags & 0x10) == 0)
csc->cc_type = CARDBUS_MAPREG_TYPE_MEM;
else
csc->cc_type = CARDBUS_MAPREG_TYPE_IO;
return (0);
multi_bar:
printf(": there are more than one possible base\n");
printf("%s: address for this device, "
"please report the following information\n",
DEVNAME(csc));
printf("%s: vendor 0x%x product 0x%x\n", DEVNAME(csc),
CARDBUS_VENDOR(ca->ca_id), CARDBUS_PRODUCT(ca->ca_id));
for (i = 0; i < 7; i++) {
/* ignore zero sized BARs */
if (ca->ca_cis.bar[i].size == 0)
continue;
/* ignore the CIS BAR */
if (CARDBUS_CIS_ASI_BAR(cis_ptr) ==
CARDBUS_CIS_ASI_BAR(ca->ca_cis.bar[i].flags))
continue;
printf("%s: base address %x type %s size %x\n",
DEVNAME(csc), CARDBUS_CIS_ASI_BAR(ca->ca_cis.bar[i].flags),
(ca->ca_cis.bar[i].flags & 0x10) ? "i/o" : "mem",
ca->ca_cis.bar[i].size);
}
return (1);
}
void
com_cardbus_attach(struct device *parent, struct device *self, void *aux)
{
struct com_softc *sc = (struct com_softc*)self;
struct com_cardbus_softc *csc = (struct com_cardbus_softc*)self;
struct cardbus_attach_args *ca = aux;
csc->cc_ct = ca->ca_ct;
csc->cc_tag = Cardbus_make_tag(csc->cc_ct);
if (com_cardbus_gofigure(ca, csc) != 0)
return;
if (Cardbus_mapreg_map(ca->ca_ct, csc->cc_reg, csc->cc_type, 0,
&sc->sc_iot, &sc->sc_ioh, &csc->cc_addr, &csc->cc_size) != 0) {
printf("failed to map memory");
return;
}
csc->cc_base = csc->cc_addr;
csc->cc_csr = CARDBUS_COMMAND_MASTER_ENABLE;
if (csc->cc_type == CARDBUS_MAPREG_TYPE_IO) {
csc->cc_base |= CARDBUS_MAPREG_TYPE_IO;
csc->cc_csr |= CARDBUS_COMMAND_IO_ENABLE;
csc->cc_cben = CARDBUS_IO_ENABLE;
} else {
csc->cc_csr |= CARDBUS_COMMAND_MEM_ENABLE;
csc->cc_cben = CARDBUS_MEM_ENABLE;
}
sc->sc_iobase = csc->cc_addr;
sc->sc_frequency = COM_FREQ;
sc->enable = com_cardbus_enable;
sc->disable = com_cardbus_disable;
sc->enabled = 0;
if (ca->ca_cis.cis1_info[0] && ca->ca_cis.cis1_info[1]) {
printf(": %s %s\n", ca->ca_cis.cis1_info[0],
ca->ca_cis.cis1_info[1]);
printf("%s", DEVNAME(csc));
}
if (com_cardbus_enable(sc))
printf(": function enable failed\n");
sc->enabled = 1;
sc->sc_hwflags = 0;
sc->sc_swflags = 0;
if (csc->cc_bug & BUG_BROADCOM)
sc->sc_fifolen = 15;
com_attach_subr(sc);
}
void
com_cardbus_setup(struct com_cardbus_softc *csc)
{
cardbus_devfunc_t ct = csc->cc_ct;
cardbus_chipset_tag_t cc = ct->ct_cc;
cardbus_function_tag_t cf = ct->ct_cf;
cardbusreg_t reg;
cardbus_conf_write(cc, cf, csc->cc_tag, csc->cc_reg, csc->cc_base);
/* enable accesses on cardbus bridge */
cf->cardbus_ctrl(cc, csc->cc_cben);
cf->cardbus_ctrl(cc, CARDBUS_BM_ENABLE);
/* and the card itself */
reg = cardbus_conf_read(cc, cf, csc->cc_tag, CARDBUS_COMMAND_STATUS_REG);
reg &= ~(CARDBUS_COMMAND_IO_ENABLE | CARDBUS_COMMAND_MEM_ENABLE);
reg |= csc->cc_csr;
cardbus_conf_write(cc, cf, csc->cc_tag, CARDBUS_COMMAND_STATUS_REG, reg);
/*
* Make sure the latency timer is set to some reasonable
* value.
*/
reg = cardbus_conf_read(cc, cf, csc->cc_tag, CARDBUS_BHLC_REG);
if (CARDBUS_LATTIMER(reg) < 0x20) {
reg &= ~(CARDBUS_LATTIMER_MASK << CARDBUS_LATTIMER_SHIFT);
reg |= (0x20 << CARDBUS_LATTIMER_SHIFT);
cardbus_conf_write(cc, cf, csc->cc_tag, CARDBUS_BHLC_REG, reg);
}
}
int
com_cardbus_enable(struct com_softc *sc)
{
struct com_cardbus_softc *csc = (struct com_cardbus_softc*)sc;
struct cardbus_softc *psc =
(struct cardbus_softc *)sc->sc_dev.dv_parent;
cardbus_chipset_tag_t cc = psc->sc_cc;
cardbus_function_tag_t cf = psc->sc_cf;
Cardbus_function_enable(csc->cc_ct);
com_cardbus_setup(csc);
/* establish the interrupt. */
csc->cc_ih = cardbus_intr_establish(cc, cf, psc->sc_intrline,
IPL_TTY, comintr, sc, DEVNAME(csc));
if (csc->cc_ih == NULL) {
printf("%s: couldn't establish interrupt\n", DEVNAME(csc));
return (1);
}
printf(": irq %d", psc->sc_intrline);
return (0);
}
void
com_cardbus_disable(struct com_softc *sc)
{
struct com_cardbus_softc *csc = (struct com_cardbus_softc*)sc;
struct cardbus_softc *psc =
(struct cardbus_softc *)sc->sc_dev.dv_parent;
cardbus_chipset_tag_t cc = psc->sc_cc;
cardbus_function_tag_t cf = psc->sc_cf;
cardbus_intr_disestablish(cc, cf, csc->cc_ih);
Cardbus_function_disable(csc->cc_ct);
}
int
com_cardbus_detach(struct device *self, int flags)
{
struct com_cardbus_softc *csc = (struct com_cardbus_softc *) self;
struct com_softc *sc = (struct com_softc *) self;
struct cardbus_softc *psc = (struct cardbus_softc *)self->dv_parent;
int error;
if ((error = com_detach(self, flags)) != 0)
return (error);
cardbus_intr_disestablish(psc->sc_cc, psc->sc_cf, csc->cc_ih);
Cardbus_mapreg_unmap(csc->cc_ct, csc->cc_reg, sc->sc_iot, sc->sc_ioh,
csc->cc_size);
return (0);
}
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