freebsd-dev/sys/dev/hme/if_hme_pci.c

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/*-
* Copyright (c) 2000 Matthew R. Green
* 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("$FreeBSD$");
/*
* 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>
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#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
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#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;
int hsc_srid;
struct resource *hsc_ires;
int hsc_irid;
bus_space_tag_t hsc_memt;
bus_space_handle_t hsc_memh;
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),
/* bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
/* MII interface */
DEVMETHOD(miibus_readreg, hme_mii_readreg),
DEVMETHOD(miibus_writereg, hme_mii_writereg),
DEVMETHOD(miibus_statchg, hme_mii_statchg),
{ 0, 0 }
};
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 = device_get_softc(dev);
struct hme_softc *sc = &hsc->hsc_hme;
int error = 0;
#if !(defined(__powerpc__) || defined(__sparc64__))
device_t *children, ebus_dev;
struct resource *ebus_rres;
bus_space_handle_t romh;
bus_space_tag_t romt;
int dataoff, ebus_rrid, slot, vpdoff;
int i, nchildren;
uint8_t buf[32];
static const uint8_t promhdr[] = { 0x55, 0xaa };
#define PROMHDR_PTR_DATA 0x18
static const uint8_t promdat[] = {
0x50, 0x43, 0x49, 0x52, /* "PCIR" */
PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8,
PCI_PRODUCT_SUN_HMENETWORK & 0xff,
PCI_PRODUCT_SUN_HMENETWORK >> 8
};
#define PROMDATA_PTR_VPD 0x08
struct pci_vpd {
uint8_t vpd_key0;
uint8_t vpd_key1;
uint8_t vpd_len;
} *vpd;
#define PCI_VPDRES_ISLARGE(x) ((x) & 0x80)
#define PCI_VPDRES_LARGE_NAME(x) ((x) & 0x7f)
#define PCI_VPDRES_TYPE_VPD 0x10 /* large */
#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);
sc->sc_pci = 1;
sc->sc_dev = dev;
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
*
*/
hsc->hsc_srid = PCI_HME_BASEADDR;
hsc->hsc_sres = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&hsc->hsc_srid, RF_ACTIVE);
if (hsc->hsc_sres == NULL) {
device_printf(dev, "could not map device registers\n");
error = ENXIO;
goto fail_mtx;
}
hsc->hsc_irid = 0;
hsc->hsc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&hsc->hsc_irid, RF_SHAREABLE | RF_ACTIVE);
if (hsc->hsc_ires == NULL) {
device_printf(dev, "could not allocate interrupt\n");
error = ENXIO;
goto fail_sres;
}
hsc->hsc_memt = rman_get_bustag(hsc->hsc_sres);
hsc->hsc_memh = rman_get_bushandle(hsc->hsc_sres);
sc->sc_sebt = sc->sc_etxt = sc->sc_erxt = sc->sc_mact = sc->sc_mift =
hsc->hsc_memt;
bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x0000, 0x1000,
&sc->sc_sebh);
bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x2000, 0x1000,
&sc->sc_etxh);
bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x4000, 0x1000,
&sc->sc_erxh);
bus_space_subregion(hsc->hsc_memt, hsc->hsc_memh, 0x6000, 0x1000,
&sc->sc_mach);
bus_space_subregion(hsc->hsc_memt, hsc->hsc_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.
*/
/* Search accompanying EBus bridge. */
slot = pci_get_slot(dev);
if (device_get_children(device_get_parent(dev), &children,
&nchildren) != 0) {
device_printf(dev, "could not get children\n");
error = ENXIO;
goto fail_sres;
}
ebus_dev = NULL;
for (i = 0; i < nchildren; i++) {
if (pci_get_class(children[i]) == PCIC_BRIDGE &&
pci_get_vendor(children[i]) == PCI_VENDOR_SUN &&
pci_get_device(children[i]) == PCI_PRODUCT_SUN_EBUS &&
pci_get_slot(children[i]) == slot) {
ebus_dev = children[i];
break;
}
}
if (ebus_dev == NULL) {
device_printf(dev, "could not find EBus bridge\n");
error = ENXIO;
goto fail_children;
}
/* Map EBus bridge PROM registers. */
#define PCI_EBUS2_BOOTROM 0x10
ebus_rrid = PCI_EBUS2_BOOTROM;
if ((ebus_rres = bus_alloc_resource_any(ebus_dev, SYS_RES_MEMORY,
&ebus_rrid, RF_ACTIVE)) == NULL) {
device_printf(dev, "could not map PROM registers\n");
error = ENXIO;
goto fail_children;
}
romt = rman_get_bustag(ebus_rres);
romh = rman_get_bushandle(ebus_rres);
/* Read PCI expansion PROM header. */
bus_space_read_region_1(romt, romh, 0, buf, sizeof(buf));
if (memcmp(buf, promhdr, sizeof(promhdr)) != 0 ||
(dataoff = (buf[PROMHDR_PTR_DATA] |
(buf[PROMHDR_PTR_DATA + 1] << 8))) < 0x1c) {
device_printf(dev, "unexpected PCI expansion PROM header\n");
error = ENXIO;
goto fail_rres;
}
/* Read PCI expansion PROM data. */
bus_space_read_region_1(romt, romh, dataoff, buf, sizeof(buf));
if (memcmp(buf, promdat, sizeof(promdat)) != 0 ||
(vpdoff = (buf[PROMDATA_PTR_VPD] |
(buf[PROMDATA_PTR_VPD + 1] << 8))) < 0x1c) {
device_printf(dev, "unexpected PCI expansion PROM 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 (bus_space_read_1(romt, romh,
vpdoff + 3 + sizeof(struct pci_vpd) + ETHER_ADDR_LEN) != 0x79 &&
bus_space_read_1(romt, romh,
vpdoff + 4 * (3 + sizeof(struct pci_vpd) + ETHER_ADDR_LEN)) == 0x79)
/* Use the Nth NA for the Nth HME on this SUNW,qfe. */
vpdoff += slot * (3 + sizeof(struct pci_vpd) + ETHER_ADDR_LEN);
bus_space_read_region_1(romt, romh, vpdoff, buf, sizeof(buf));
vpd = (void *)(buf + 3);
if (PCI_VPDRES_ISLARGE(buf[0]) == 0 ||
PCI_VPDRES_LARGE_NAME(buf[0]) != PCI_VPDRES_TYPE_VPD ||
(buf[1] << 8 | buf[2]) != sizeof(struct pci_vpd) + ETHER_ADDR_LEN ||
vpd->vpd_key0 != 0x4e /* N */ ||
vpd->vpd_key1 != 0x41 /* A */ ||
vpd->vpd_len != ETHER_ADDR_LEN) {
device_printf(dev, "unexpected PCI VPD\n");
error = ENXIO;
goto fail_rres;
}
bcopy(buf + 3 + sizeof(struct pci_vpd), sc->sc_enaddr,
ETHER_ADDR_LEN);
fail_rres:
bus_release_resource(ebus_dev, SYS_RES_MEMORY, ebus_rrid, 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, 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, hsc->hsc_irid, hsc->hsc_ires);
fail_sres:
bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_srid, 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 = device_get_softc(dev);
struct hme_softc *sc = &hsc->hsc_hme;
bus_teardown_intr(dev, hsc->hsc_ires, hsc->hsc_ih);
hme_detach(sc);
bus_release_resource(dev, SYS_RES_IRQ, hsc->hsc_irid, hsc->hsc_ires);
bus_release_resource(dev, SYS_RES_MEMORY, hsc->hsc_srid, hsc->hsc_sres);
mtx_destroy(&sc->sc_lock);
return (0);
}
static int
hme_pci_suspend(device_t dev)
{
struct hme_pci_softc *hsc = device_get_softc(dev);
struct hme_softc *sc = &hsc->hsc_hme;
hme_suspend(sc);
return (0);
}
static int
hme_pci_resume(device_t dev)
{
struct hme_pci_softc *hsc = device_get_softc(dev);
struct hme_softc *sc = &hsc->hsc_hme;
hme_resume(sc);
return (0);
}