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| Current File : //usr/src/sys/dev/hme/if_hme_pci.c |
/*-
* Copyright (c) 2000 Matthew R. Green
* Copyright (c) 2007 Marius Strobl <marius@FreeBSD.org>
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*
* from: NetBSD: if_hme_pci.c,v 1.14 2004/03/17 08:58:23 martin Exp
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/hme/if_hme_pci.c 229093 2011-12-31 14:12:12Z hselasky $");
/*
* PCI front-end device driver for the HME ethernet device.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <machine/bus.h>
#if defined(__powerpc__) || defined(__sparc64__)
#include <dev/ofw/openfirm.h>
#include <machine/ofw_machdep.h>
#endif
#include <machine/resource.h>
#include <sys/rman.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/hme/if_hmereg.h>
#include <dev/hme/if_hmevar.h>
#include "miibus_if.h"
struct hme_pci_softc {
struct hme_softc hsc_hme; /* HME device */
struct resource *hsc_sres;
struct resource *hsc_ires;
void *hsc_ih;
};
static int hme_pci_probe(device_t);
static int hme_pci_attach(device_t);
static int hme_pci_detach(device_t);
static int hme_pci_suspend(device_t);
static int hme_pci_resume(device_t);
static device_method_t hme_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, hme_pci_probe),
DEVMETHOD(device_attach, hme_pci_attach),
DEVMETHOD(device_detach, hme_pci_detach),
DEVMETHOD(device_suspend, hme_pci_suspend),
DEVMETHOD(device_resume, hme_pci_resume),
/* Can just use the suspend method here. */
DEVMETHOD(device_shutdown, hme_pci_suspend),
/* MII interface */
DEVMETHOD(miibus_readreg, hme_mii_readreg),
DEVMETHOD(miibus_writereg, hme_mii_writereg),
DEVMETHOD(miibus_statchg, hme_mii_statchg),
DEVMETHOD_END
};
static driver_t hme_pci_driver = {
"hme",
hme_pci_methods,
sizeof(struct hme_pci_softc)
};
DRIVER_MODULE(hme, pci, hme_pci_driver, hme_devclass, 0, 0);
MODULE_DEPEND(hme, pci, 1, 1, 1);
MODULE_DEPEND(hme, ether, 1, 1, 1);
#define PCI_VENDOR_SUN 0x108e
#define PCI_PRODUCT_SUN_EBUS 0x1000
#define PCI_PRODUCT_SUN_HMENETWORK 0x1001
int
hme_pci_probe(device_t dev)
{
if (pci_get_vendor(dev) == PCI_VENDOR_SUN &&
pci_get_device(dev) == PCI_PRODUCT_SUN_HMENETWORK) {
device_set_desc(dev, "Sun HME 10/100 Ethernet");
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
int
hme_pci_attach(device_t dev)
{
struct hme_pci_softc *hsc;
struct hme_softc *sc;
bus_space_tag_t memt;
bus_space_handle_t memh;
int i, error = 0;
#if !(defined(__powerpc__) || defined(__sparc64__))
device_t *children, ebus_dev;
struct resource *ebus_rres;
int j, slot;
#endif
pci_enable_busmaster(dev);
/*
* Some Sun HMEs do have their intpin register bogusly set to 0,
* although it should be 1. Correct that.
*/
if (pci_get_intpin(dev) == 0)
pci_set_intpin(dev, 1);
hsc = device_get_softc(dev);
sc = &hsc->hsc_hme;
sc->sc_dev = dev;
sc->sc_flags |= HME_PCI;
mtx_init(&sc->sc_lock, device_get_nameunit(dev), MTX_NETWORK_LOCK,
MTX_DEF);
/*
* Map five register banks:
*
* bank 0: HME SEB registers: +0x0000
* bank 1: HME ETX registers: +0x2000
* bank 2: HME ERX registers: +0x4000
* bank 3: HME MAC registers: +0x6000
* bank 4: HME MIF registers: +0x7000
*
*/
i = PCIR_BAR(0);
hsc->hsc_sres = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&i, RF_ACTIVE);
if (hsc->hsc_sres == NULL) {
device_printf(dev, "could not map device registers\n");
error = ENXIO;
goto fail_mtx;
}
i = 0;
hsc->hsc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&i, RF_SHAREABLE | RF_ACTIVE);
if (hsc->hsc_ires == NULL) {
device_printf(dev, "could not allocate interrupt\n");
error = ENXIO;
goto fail_sres;
}
memt = rman_get_bustag(hsc->hsc_sres);
memh = rman_get_bushandle(hsc->hsc_sres);
sc->sc_sebt = sc->sc_etxt = sc->sc_erxt = sc->sc_mact = sc->sc_mift =
memt;
bus_space_subregion(memt, memh, 0x0000, 0x1000, &sc->sc_sebh);
bus_space_subregion(memt, memh, 0x2000, 0x1000, &sc->sc_etxh);
bus_space_subregion(memt, memh, 0x4000, 0x1000, &sc->sc_erxh);
bus_space_subregion(memt, memh, 0x6000, 0x1000, &sc->sc_mach);
bus_space_subregion(memt, memh, 0x7000, 0x1000, &sc->sc_mifh);
#if defined(__powerpc__) || defined(__sparc64__)
OF_getetheraddr(dev, sc->sc_enaddr);
#else
/*
* Dig out VPD (vital product data) and read NA (network address).
*
* The PCI HME is a PCIO chip, which is composed of two functions:
* function 0: PCI-EBus2 bridge, and
* function 1: HappyMeal Ethernet controller.
*
* The VPD of HME resides in the Boot PROM (PCI FCode) attached
* to the EBus bridge and can't be accessed via the PCI capability
* pointer.
* ``Writing FCode 3.x Programs'' (newer ones, dated 1997 and later)
* chapter 2 describes the data structure.
*
* We don't have a MI EBus driver since no EBus device exists
* (besides the FCode PROM) on add-on HME boards. The ``no driver
* attached'' message for function 0 therefore is what is expected.
*/
#define PCI_ROMHDR_SIZE 0x1c
#define PCI_ROMHDR_SIG 0x00
#define PCI_ROMHDR_SIG_MAGIC 0xaa55 /* little endian */
#define PCI_ROMHDR_PTR_DATA 0x18
#define PCI_ROM_SIZE 0x18
#define PCI_ROM_SIG 0x00
#define PCI_ROM_SIG_MAGIC 0x52494350 /* "PCIR", endian */
/* reversed */
#define PCI_ROM_VENDOR 0x04
#define PCI_ROM_DEVICE 0x06
#define PCI_ROM_PTR_VPD 0x08
#define PCI_VPDRES_BYTE0 0x00
#define PCI_VPDRES_ISLARGE(x) ((x) & 0x80)
#define PCI_VPDRES_LARGE_NAME(x) ((x) & 0x7f)
#define PCI_VPDRES_TYPE_VPD 0x10 /* large */
#define PCI_VPDRES_LARGE_LEN_LSB 0x01
#define PCI_VPDRES_LARGE_LEN_MSB 0x02
#define PCI_VPDRES_LARGE_DATA 0x03
#define PCI_VPD_SIZE 0x03
#define PCI_VPD_KEY0 0x00
#define PCI_VPD_KEY1 0x01
#define PCI_VPD_LEN 0x02
#define PCI_VPD_DATA 0x03
#define HME_ROM_READ_N(n, offs) bus_space_read_ ## n (memt, memh, (offs))
#define HME_ROM_READ_1(offs) HME_ROM_READ_N(1, (offs))
#define HME_ROM_READ_2(offs) HME_ROM_READ_N(2, (offs))
#define HME_ROM_READ_4(offs) HME_ROM_READ_N(4, (offs))
/* Search accompanying EBus bridge. */
slot = pci_get_slot(dev);
if (device_get_children(device_get_parent(dev), &children, &i) != 0) {
device_printf(dev, "could not get children\n");
error = ENXIO;
goto fail_sres;
}
ebus_dev = NULL;
for (j = 0; j < i; j++) {
if (pci_get_class(children[j]) == PCIC_BRIDGE &&
pci_get_vendor(children[j]) == PCI_VENDOR_SUN &&
pci_get_device(children[j]) == PCI_PRODUCT_SUN_EBUS &&
pci_get_slot(children[j]) == slot) {
ebus_dev = children[j];
break;
}
}
if (ebus_dev == NULL) {
device_printf(dev, "could not find EBus bridge\n");
error = ENXIO;
goto fail_children;
}
/* Map EBus bridge PROM registers. */
i = PCIR_BAR(0);
if ((ebus_rres = bus_alloc_resource_any(ebus_dev, SYS_RES_MEMORY,
&i, RF_ACTIVE)) == NULL) {
device_printf(dev, "could not map PROM registers\n");
error = ENXIO;
goto fail_children;
}
memt = rman_get_bustag(ebus_rres);
memh = rman_get_bushandle(ebus_rres);
/* Read PCI Expansion ROM header. */
if (HME_ROM_READ_2(PCI_ROMHDR_SIG) != PCI_ROMHDR_SIG_MAGIC ||
(i = HME_ROM_READ_2(PCI_ROMHDR_PTR_DATA)) < PCI_ROMHDR_SIZE) {
device_printf(dev, "unexpected PCI Expansion ROM header\n");
error = ENXIO;
goto fail_rres;
}
/* Read PCI Expansion ROM data. */
if (HME_ROM_READ_4(i + PCI_ROM_SIG) != PCI_ROM_SIG_MAGIC ||
HME_ROM_READ_2(i + PCI_ROM_VENDOR) != pci_get_vendor(dev) ||
HME_ROM_READ_2(i + PCI_ROM_DEVICE) != pci_get_device(dev) ||
(j = HME_ROM_READ_2(i + PCI_ROM_PTR_VPD)) < i + PCI_ROM_SIZE) {
device_printf(dev, "unexpected PCI Expansion ROM data\n");
error = ENXIO;
goto fail_rres;
}
/*
* Read PCI VPD.
* SUNW,hme cards have a single large resource VPD-R tag
* containing one NA. SUNW,qfe cards have four large resource
* VPD-R tags containing one NA each (all four HME chips share
* the same PROM).
* The VPD used on both cards is not in PCI 2.2 standard format
* however. The length in the resource header is in big endian
* and the end tag is non-standard (0x79) and followed by an
* all-zero "checksum" byte. Sun calls this a "Fresh Choice
* Ethernet" VPD...
*/
/* Look at the end tag to determine whether this is a VPD with 4 NAs. */
if (HME_ROM_READ_1(j + PCI_VPDRES_LARGE_DATA + PCI_VPD_SIZE +
ETHER_ADDR_LEN) != 0x79 &&
HME_ROM_READ_1(j + 4 * (PCI_VPDRES_LARGE_DATA + PCI_VPD_SIZE +
ETHER_ADDR_LEN)) == 0x79)
/* Use the Nth NA for the Nth HME on this SUNW,qfe. */
j += slot * (PCI_VPDRES_LARGE_DATA + PCI_VPD_SIZE +
ETHER_ADDR_LEN);
if (PCI_VPDRES_ISLARGE(HME_ROM_READ_1(j + PCI_VPDRES_BYTE0)) == 0 ||
PCI_VPDRES_LARGE_NAME(HME_ROM_READ_1(j + PCI_VPDRES_BYTE0)) !=
PCI_VPDRES_TYPE_VPD ||
(HME_ROM_READ_1(j + PCI_VPDRES_LARGE_LEN_LSB) << 8 |
HME_ROM_READ_1(j + PCI_VPDRES_LARGE_LEN_MSB)) !=
PCI_VPD_SIZE + ETHER_ADDR_LEN ||
HME_ROM_READ_1(j + PCI_VPDRES_LARGE_DATA + PCI_VPD_KEY0) !=
0x4e /* N */ ||
HME_ROM_READ_1(j + PCI_VPDRES_LARGE_DATA + PCI_VPD_KEY1) !=
0x41 /* A */ ||
HME_ROM_READ_1(j + PCI_VPDRES_LARGE_DATA + PCI_VPD_LEN) !=
ETHER_ADDR_LEN) {
device_printf(dev, "unexpected PCI VPD\n");
error = ENXIO;
goto fail_rres;
}
bus_space_read_region_1(memt, memh, j + PCI_VPDRES_LARGE_DATA +
PCI_VPD_DATA, sc->sc_enaddr, ETHER_ADDR_LEN);
fail_rres:
bus_release_resource(ebus_dev, SYS_RES_MEMORY,
rman_get_rid(ebus_rres), ebus_rres);
fail_children:
free(children, M_TEMP);
if (error != 0)
goto fail_sres;
#endif
sc->sc_burst = 64; /* XXX */
/*
* call the main configure
*/
if ((error = hme_config(sc)) != 0) {
device_printf(dev, "could not be configured\n");
goto fail_ires;
}
if ((error = bus_setup_intr(dev, hsc->hsc_ires, INTR_TYPE_NET |
INTR_MPSAFE, NULL, hme_intr, sc, &hsc->hsc_ih)) != 0) {
device_printf(dev, "couldn't establish interrupt\n");
hme_detach(sc);
goto fail_ires;
}
return (0);
fail_ires:
bus_release_resource(dev, SYS_RES_IRQ,
rman_get_rid(hsc->hsc_ires), hsc->hsc_ires);
fail_sres:
bus_release_resource(dev, SYS_RES_MEMORY,
rman_get_rid(hsc->hsc_sres), hsc->hsc_sres);
fail_mtx:
mtx_destroy(&sc->sc_lock);
return (error);
}
static int
hme_pci_detach(device_t dev)
{
struct hme_pci_softc *hsc;
struct hme_softc *sc;
hsc = device_get_softc(dev);
sc = &hsc->hsc_hme;
bus_teardown_intr(dev, hsc->hsc_ires, hsc->hsc_ih);
hme_detach(sc);
bus_release_resource(dev, SYS_RES_IRQ,
rman_get_rid(hsc->hsc_ires), hsc->hsc_ires);
bus_release_resource(dev, SYS_RES_MEMORY,
rman_get_rid(hsc->hsc_sres), hsc->hsc_sres);
mtx_destroy(&sc->sc_lock);
return (0);
}
static int
hme_pci_suspend(device_t dev)
{
struct hme_pci_softc *hsc;
hsc = device_get_softc(dev);
hme_suspend(&hsc->hsc_hme);
return (0);
}
static int
hme_pci_resume(device_t dev)
{
struct hme_pci_softc *hsc;
hsc = device_get_softc(dev);
hme_resume(&hsc->hsc_hme);
return (0);
}