Current Path : /sys/dev/gem/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/dev/gem/if_gem_pci.c |
/*- * 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); }