FreeBSD-5.3/sys/dev/an/if_an_pci.c
/*-
* Copyright (c) 1997, 1998, 1999
* Bill Paul <wpaul@ctr.columbia.edu>. 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
* 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: src/sys/dev/an/if_an_pci.c,v 1.26 2003/12/30 01:07:12 ambrisko Exp $");
/*
* This is a PCI shim for the Aironet PC4500/4800 wireless network
* driver. Aironet makes PCMCIA, ISA and PCI versions of these devices,
* which all have basically the same interface. The ISA and PCI cards
* are actually bridge adapters with PCMCIA cards inserted into them,
* however they appear as normal PCI or ISA devices to the host.
*
* All we do here is handle the PCI probe and attach and set up an
* interrupt handler entry point. The PCI version of the card uses
* a PLX 9050 PCI to "dumb bus" bridge chip, which provides us with
* multiple PCI address space mappings. The primary mapping at PCI
* register 0x14 is for the PLX chip itself, *NOT* the Aironet card.
* The I/O address of the Aironet is actually at register 0x18, which
* is the local bus mapping register for bus space 0. There are also
* registers for additional register spaces at registers 0x1C and
* 0x20, but these are unused in the Aironet devices. To find out
* more, you need a datasheet for the 9050 from PLX, but you have
* to go through their sales office to get it. Bleh.
*/
#include "opt_inet.h"
#ifdef INET
#define ANCACHE
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <machine/resource.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/an/if_aironet_ieee.h>
#include <dev/an/if_anreg.h>
struct an_type {
u_int16_t an_vid;
u_int16_t an_did;
char *an_name;
};
#define AIRONET_VENDORID 0x14B9
#define AIRONET_DEVICEID_35x 0x0350
#define AIRONET_DEVICEID_4500 0x4500
#define AIRONET_DEVICEID_4800 0x4800
#define AIRONET_DEVICEID_4xxx 0x0001
#define AIRONET_DEVICEID_MPI350 0xA504
#define AN_PCI_PLX_LOIO 0x14 /* PLX chip iobase */
#define AN_PCI_LOIO 0x18 /* Aironet iobase */
static struct an_type an_devs[] = {
{ AIRONET_VENDORID, AIRONET_DEVICEID_35x, "Cisco Aironet 350 Series" },
{ AIRONET_VENDORID, AIRONET_DEVICEID_4500, "Aironet PCI4500" },
{ AIRONET_VENDORID, AIRONET_DEVICEID_4800, "Aironet PCI4800" },
{ AIRONET_VENDORID, AIRONET_DEVICEID_4xxx, "Aironet PCI4500/PCI4800" },
{ 0, 0, NULL }
};
static int an_probe_pci (device_t);
static int an_attach_pci (device_t);
static int an_suspend_pci (device_t);
static int an_resume_pci (device_t);
static int
an_probe_pci(device_t dev)
{
struct an_type *t;
t = an_devs;
while (t->an_name != NULL) {
if (pci_get_vendor(dev) == t->an_vid &&
pci_get_device(dev) == t->an_did) {
device_set_desc(dev, t->an_name);
return(0);
}
t++;
}
if (pci_get_vendor(dev) == AIRONET_VENDORID &&
pci_get_device(dev) == AIRONET_DEVICEID_MPI350) {
device_set_desc(dev, "Cisco Aironet MPI350");
return(0);
}
return(ENXIO);
}
static int
an_attach_pci(dev)
device_t dev;
{
u_int32_t command;
struct an_softc *sc;
int unit, flags, error = 0;
sc = device_get_softc(dev);
unit = device_get_unit(dev);
flags = device_get_flags(dev);
bzero(sc, sizeof(struct an_softc));
if (pci_get_vendor(dev) == AIRONET_VENDORID &&
pci_get_device(dev) == AIRONET_DEVICEID_MPI350) {
sc->mpi350 = 1;
sc->port_rid = PCIR_BAR(0);
} else {
/*
* Map control/status registers.
*/
command = pci_read_config(dev, PCIR_COMMAND, 4);
command |= PCIM_CMD_PORTEN;
pci_write_config(dev, PCIR_COMMAND, command, 4);
command = pci_read_config(dev, PCIR_COMMAND, 4);
if (!(command & PCIM_CMD_PORTEN)) {
printf("an%d: failed to enable I/O ports!\n", unit);
error = ENXIO;
goto fail;
}
sc->port_rid = AN_PCI_LOIO;
}
error = an_alloc_port(dev, sc->port_rid, 1);
if (error) {
printf("an%d: couldn't map ports\n", unit);
goto fail;
}
sc->an_btag = rman_get_bustag(sc->port_res);
sc->an_bhandle = rman_get_bushandle(sc->port_res);
/* Allocate memory for MPI350 */
if (sc->mpi350) {
/* Allocate memory */
sc->mem_rid = PCIR_BAR(1);
error = an_alloc_memory(dev, sc->mem_rid, 1);
if (error) {
printf("an%d: couldn't map memory\n", unit);
goto fail;
}
sc->an_mem_btag = rman_get_bustag(sc->mem_res);
sc->an_mem_bhandle = rman_get_bushandle(sc->mem_res);
/* Allocate aux. memory */
sc->mem_aux_rid = PCIR_BAR(2);
error = an_alloc_aux_memory(dev, sc->mem_aux_rid,
AN_AUX_MEM_SIZE);
if (error) {
printf("an%d: couldn't map aux memory\n", unit);
goto fail;
}
sc->an_mem_aux_btag = rman_get_bustag(sc->mem_aux_res);
sc->an_mem_aux_bhandle = rman_get_bushandle(sc->mem_aux_res);
/* Allocate DMA region */
error = bus_dma_tag_create(NULL, /* parent */
1, 0, /* alignment, bounds */
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
0x3ffff, /* maxsize XXX */
1, /* nsegments */
0xffff, /* maxsegsize XXX */
BUS_DMA_ALLOCNOW, /* flags */
NULL, /* lockfunc */
NULL, /* lockarg */
&sc->an_dtag);
if (error) {
printf("an%d: couldn't get DMA region\n", unit);
goto fail;
}
}
/* Allocate interrupt */
error = an_alloc_irq(dev, 0, RF_SHAREABLE);
if (error) {
goto fail;
}
sc->an_dev = dev;
error = an_attach(sc, device_get_unit(dev), flags);
if (error) {
goto fail;
}
/*
* Must setup the interrupt after the an_attach to prevent racing.
*/
error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET,
an_intr, sc, &sc->irq_handle);
fail:
if (error)
an_release_resources(dev);
return(error);
}
static int
an_suspend_pci(device_t dev)
{
an_shutdown(dev);
return (0);
}
static int
an_resume_pci(device_t dev)
{
an_resume(dev);
return (0);
}
static device_method_t an_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, an_probe_pci),
DEVMETHOD(device_attach, an_attach_pci),
DEVMETHOD(device_detach, an_detach),
DEVMETHOD(device_shutdown, an_shutdown),
DEVMETHOD(device_suspend, an_suspend_pci),
DEVMETHOD(device_resume, an_resume_pci),
{ 0, 0 }
};
static driver_t an_pci_driver = {
"an",
an_pci_methods,
sizeof(struct an_softc),
};
static devclass_t an_devclass;
DRIVER_MODULE(an, pci, an_pci_driver, an_devclass, 0, 0);
MODULE_DEPEND(an, pci, 1, 1, 1);
MODULE_DEPEND(an, wlan, 1, 1, 1);