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/*-
* Copyright (C) 2001 Eduardo Horvath.
* 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.
*
* 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_gem_pci.c,v 1.7 2001/10/18 15:09:15 thorpej Exp
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/gem/if_gem_pci.c 229093 2011-12-31 14:12:12Z hselasky $");
/*
* PCI bindings for Apple GMAC, Sun ERI and Sun GEM Ethernet controllers
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/resource.h>
#include <sys/rman.h>
#include <sys/socket.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <machine/bus.h>
#if defined(__powerpc__) || defined(__sparc64__)
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/openfirm.h>
#include <machine/ofw_machdep.h>
#endif
#include <machine/resource.h>
#include <dev/gem/if_gemreg.h>
#include <dev/gem/if_gemvar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include "miibus_if.h"
static int gem_pci_attach(device_t dev);
static int gem_pci_detach(device_t dev);
static int gem_pci_probe(device_t dev);
static int gem_pci_resume(device_t dev);
static int gem_pci_suspend(device_t dev);
static device_method_t gem_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, gem_pci_probe),
DEVMETHOD(device_attach, gem_pci_attach),
DEVMETHOD(device_detach, gem_pci_detach),
DEVMETHOD(device_suspend, gem_pci_suspend),
DEVMETHOD(device_resume, gem_pci_resume),
/* Use the suspend handler here, it is all that is required. */
DEVMETHOD(device_shutdown, gem_pci_suspend),
/* MII interface */
DEVMETHOD(miibus_readreg, gem_mii_readreg),
DEVMETHOD(miibus_writereg, gem_mii_writereg),
DEVMETHOD(miibus_statchg, gem_mii_statchg),
DEVMETHOD_END
};
static driver_t gem_pci_driver = {
"gem",
gem_pci_methods,
sizeof(struct gem_softc)
};
DRIVER_MODULE(gem, pci, gem_pci_driver, gem_devclass, 0, 0);
MODULE_DEPEND(gem, pci, 1, 1, 1);
MODULE_DEPEND(gem, ether, 1, 1, 1);
static const struct gem_pci_dev {
uint32_t gpd_devid;
int gpd_variant;
const char *gpd_desc;
} const gem_pci_devlist[] = {
{ 0x1101108e, GEM_SUN_ERI, "Sun ERI 10/100 Ethernet" },
{ 0x2bad108e, GEM_SUN_GEM, "Sun GEM Gigabit Ethernet" },
{ 0x0021106b, GEM_APPLE_GMAC, "Apple UniNorth GMAC Ethernet" },
{ 0x0024106b, GEM_APPLE_GMAC, "Apple Pangea GMAC Ethernet" },
{ 0x0032106b, GEM_APPLE_GMAC, "Apple UniNorth2 GMAC Ethernet" },
{ 0x004c106b, GEM_APPLE_K2_GMAC,"Apple K2 GMAC Ethernet" },
{ 0x0051106b, GEM_APPLE_GMAC, "Apple Shasta GMAC Ethernet" },
{ 0x006b106b, GEM_APPLE_GMAC, "Apple Intrepid 2 GMAC Ethernet" },
{ 0, 0, NULL }
};
static int
gem_pci_probe(device_t dev)
{
int i;
for (i = 0; gem_pci_devlist[i].gpd_desc != NULL; i++) {
if (pci_get_devid(dev) == gem_pci_devlist[i].gpd_devid) {
device_set_desc(dev, gem_pci_devlist[i].gpd_desc);
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
static struct resource_spec gem_pci_res_spec[] = {
{ SYS_RES_IRQ, 0, RF_SHAREABLE | RF_ACTIVE }, /* GEM_RES_INTR */
{ SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE }, /* GEM_RES_BANK1 */
{ -1, 0 }
};
#define GEM_SHARED_PINS "shared-pins"
#define GEM_SHARED_PINS_SERDES "serdes"
static int
gem_pci_attach(device_t dev)
{
struct gem_softc *sc;
int i;
#if defined(__powerpc__) || defined(__sparc64__)
char buf[sizeof(GEM_SHARED_PINS)];
#else
int j;
#endif
sc = device_get_softc(dev);
sc->sc_variant = GEM_UNKNOWN;
for (i = 0; gem_pci_devlist[i].gpd_desc != NULL; i++) {
if (pci_get_devid(dev) == gem_pci_devlist[i].gpd_devid) {
sc->sc_variant = gem_pci_devlist[i].gpd_variant;
break;
}
}
if (sc->sc_variant == GEM_UNKNOWN) {
device_printf(dev, "unknown adaptor\n");
return (ENXIO);
}
pci_enable_busmaster(dev);
/*
* Some Sun GEMs/ERIs 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);
/* Set the PCI latency timer for Sun ERIs. */
if (sc->sc_variant == GEM_SUN_ERI)
pci_write_config(dev, PCIR_LATTIMER, GEM_ERI_LATENCY_TIMER, 1);
sc->sc_dev = dev;
sc->sc_flags |= GEM_PCI;
if (bus_alloc_resources(dev, gem_pci_res_spec, sc->sc_res)) {
device_printf(dev, "failed to allocate resources\n");
bus_release_resources(dev, gem_pci_res_spec, sc->sc_res);
return (ENXIO);
}
GEM_LOCK_INIT(sc, device_get_nameunit(dev));
/*
* Derive GEM_RES_BANK2 from GEM_RES_BANK1. This seemed cleaner
* with the old way of using copies of the bus tag and handle in
* the softc along with bus_space_*()...
*/
sc->sc_res[GEM_RES_BANK2] = malloc(sizeof(*sc->sc_res[GEM_RES_BANK2]),
M_DEVBUF, M_NOWAIT | M_ZERO);
if (sc->sc_res[GEM_RES_BANK2] == NULL) {
device_printf(dev, "failed to allocate bank2 resource\n");
goto fail;
}
rman_set_bustag(sc->sc_res[GEM_RES_BANK2],
rman_get_bustag(sc->sc_res[GEM_RES_BANK1]));
bus_space_subregion(rman_get_bustag(sc->sc_res[GEM_RES_BANK1]),
rman_get_bushandle(sc->sc_res[GEM_RES_BANK1]),
GEM_PCI_BANK2_OFFSET, GEM_PCI_BANK2_SIZE,
&sc->sc_res[GEM_RES_BANK2]->r_bushandle);
/* Determine whether we're running at 66MHz. */
if ((GEM_BANK2_READ_4(sc, GEM_PCI_BIF_CONFIG) &
GEM_PCI_BIF_CNF_M66EN) != 0)
sc->sc_flags |= GEM_PCI66;
#if defined(__powerpc__) || defined(__sparc64__)
OF_getetheraddr(dev, sc->sc_enaddr);
if (OF_getprop(ofw_bus_get_node(dev), GEM_SHARED_PINS, buf,
sizeof(buf)) > 0) {
buf[sizeof(buf) - 1] = '\0';
if (strcmp(buf, GEM_SHARED_PINS_SERDES) == 0)
sc->sc_flags |= GEM_SERDES;
}
#else
/*
* Dig out VPD (vital product data) and read NA (network address).
* The VPD resides in the PCI Expansion ROM (PCI FCode) 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.
*/
#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_LARGE_LEN_LSB 0x01
#define PCI_VPDRES_LARGE_LEN_MSB 0x02
#define PCI_VPDRES_LARGE_SIZE 0x03
#define PCI_VPDRES_TYPE_VPD 0x10 /* large */
#define PCI_VPD_KEY0 0x00
#define PCI_VPD_KEY1 0x01
#define PCI_VPD_LEN 0x02
#define PCI_VPD_SIZE 0x03
#define GEM_ROM_READ_1(sc, offs) \
GEM_BANK1_READ_1((sc), GEM_PCI_ROM_OFFSET + (offs))
#define GEM_ROM_READ_2(sc, offs) \
GEM_BANK1_READ_2((sc), GEM_PCI_ROM_OFFSET + (offs))
#define GEM_ROM_READ_4(sc, offs) \
GEM_BANK1_READ_4((sc), GEM_PCI_ROM_OFFSET + (offs))
/* Read PCI Expansion ROM header. */
if (GEM_ROM_READ_2(sc, PCI_ROMHDR_SIG) != PCI_ROMHDR_SIG_MAGIC ||
(i = GEM_ROM_READ_2(sc, PCI_ROMHDR_PTR_DATA)) <
PCI_ROMHDR_SIZE) {
device_printf(dev, "unexpected PCI Expansion ROM header\n");
goto fail;
}
/* Read PCI Expansion ROM data. */
if (GEM_ROM_READ_4(sc, i + PCI_ROM_SIG) != PCI_ROM_SIG_MAGIC ||
GEM_ROM_READ_2(sc, i + PCI_ROM_VENDOR) != pci_get_vendor(dev) ||
GEM_ROM_READ_2(sc, i + PCI_ROM_DEVICE) != pci_get_device(dev) ||
(j = GEM_ROM_READ_2(sc, i + PCI_ROM_PTR_VPD)) <
i + PCI_ROM_SIZE) {
device_printf(dev, "unexpected PCI Expansion ROM data\n");
goto fail;
}
/*
* Read PCI VPD.
* SUNW,pci-gem cards have a single large resource VPD-R tag
* containing one NA. The VPD used 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...
*/
if (PCI_VPDRES_ISLARGE(GEM_ROM_READ_1(sc,
j + PCI_VPDRES_BYTE0)) == 0 ||
PCI_VPDRES_LARGE_NAME(GEM_ROM_READ_1(sc,
j + PCI_VPDRES_BYTE0)) != PCI_VPDRES_TYPE_VPD ||
((GEM_ROM_READ_1(sc, j + PCI_VPDRES_LARGE_LEN_LSB) << 8) |
GEM_ROM_READ_1(sc, j + PCI_VPDRES_LARGE_LEN_MSB)) !=
PCI_VPD_SIZE + ETHER_ADDR_LEN ||
GEM_ROM_READ_1(sc, j + PCI_VPDRES_LARGE_SIZE + PCI_VPD_KEY0) !=
0x4e /* N */ ||
GEM_ROM_READ_1(sc, j + PCI_VPDRES_LARGE_SIZE + PCI_VPD_KEY1) !=
0x41 /* A */ ||
GEM_ROM_READ_1(sc, j + PCI_VPDRES_LARGE_SIZE + PCI_VPD_LEN) !=
ETHER_ADDR_LEN ||
GEM_ROM_READ_1(sc, j + PCI_VPDRES_LARGE_SIZE + PCI_VPD_SIZE +
ETHER_ADDR_LEN) != 0x79) {
device_printf(dev, "unexpected PCI VPD\n");
goto fail;
}
bus_read_region_1(sc->sc_res[GEM_RES_BANK1],
GEM_PCI_ROM_OFFSET + j + PCI_VPDRES_LARGE_SIZE + PCI_VPD_SIZE,
sc->sc_enaddr, ETHER_ADDR_LEN);
#endif
/*
* The Xserve G5 has a fake GMAC with an all-zero MAC address.
* Check for this, and don't attach in this case.
*/
for (i = 0; i < ETHER_ADDR_LEN && sc->sc_enaddr[i] == 0; i++) {}
if (i == ETHER_ADDR_LEN) {
device_printf(dev, "invalid MAC address\n");
goto fail;
}
if (gem_attach(sc) != 0) {
device_printf(dev, "could not be attached\n");
goto fail;
}
if (bus_setup_intr(dev, sc->sc_res[GEM_RES_INTR], INTR_TYPE_NET |
INTR_MPSAFE, NULL, gem_intr, sc, &sc->sc_ih) != 0) {
device_printf(dev, "failed to set up interrupt\n");
gem_detach(sc);
goto fail;
}
return (0);
fail:
if (sc->sc_res[GEM_RES_BANK2] != NULL)
free(sc->sc_res[GEM_RES_BANK2], M_DEVBUF);
GEM_LOCK_DESTROY(sc);
bus_release_resources(dev, gem_pci_res_spec, sc->sc_res);
return (ENXIO);
}
static int
gem_pci_detach(device_t dev)
{
struct gem_softc *sc;
sc = device_get_softc(dev);
bus_teardown_intr(dev, sc->sc_res[GEM_RES_INTR], sc->sc_ih);
gem_detach(sc);
free(sc->sc_res[GEM_RES_BANK2], M_DEVBUF);
GEM_LOCK_DESTROY(sc);
bus_release_resources(dev, gem_pci_res_spec, sc->sc_res);
return (0);
}
static int
gem_pci_suspend(device_t dev)
{
gem_suspend(device_get_softc(dev));
return (0);
}
static int
gem_pci_resume(device_t dev)
{
gem_resume(device_get_softc(dev));
return (0);
}