/*- * ichsmb_pci.c * * Author: Archie Cobbs * Copyright (c) 2000 Whistle Communications, Inc. * All rights reserved. * Author: Archie Cobbs * * Subject to the following obligations and disclaimer of warranty, use and * redistribution of this software, in source or object code forms, with or * without modifications are expressly permitted by Whistle Communications; * provided, however, that: * 1. Any and all reproductions of the source or object code must include the * copyright notice above and the following disclaimer of warranties; and * 2. No rights are granted, in any manner or form, to use Whistle * Communications, Inc. trademarks, including the mark "WHISTLE * COMMUNICATIONS" on advertising, endorsements, or otherwise except as * such appears in the above copyright notice or in the software. * * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY * OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); /* * Support for the SMBus controller logical device which is part of the * Intel 81801AA/AB/BA/CA/DC/EB (ICH/ICH[02345]) I/O controller hub chips. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* PCI unique identifiers */ #define ID_82801AA 0x24138086 #define ID_82801AB 0x24238086 #define ID_82801BA 0x24438086 #define ID_82801CA 0x24838086 #define ID_82801DC 0x24C38086 #define ID_82801EB 0x24D38086 #define ID_6300ESB 0x25a48086 #define PCIS_SERIALBUS_SMBUS_PROGIF 0x00 /* Internal functions */ static int ichsmb_pci_probe(device_t dev); static int ichsmb_pci_attach(device_t dev); /* Device methods */ static device_method_t ichsmb_pci_methods[] = { /* Device interface */ DEVMETHOD(device_probe, ichsmb_pci_probe), DEVMETHOD(device_attach, ichsmb_pci_attach), /* Bus methods */ DEVMETHOD(bus_print_child, bus_generic_print_child), /* SMBus methods */ DEVMETHOD(smbus_callback, ichsmb_callback), DEVMETHOD(smbus_quick, ichsmb_quick), DEVMETHOD(smbus_sendb, ichsmb_sendb), DEVMETHOD(smbus_recvb, ichsmb_recvb), DEVMETHOD(smbus_writeb, ichsmb_writeb), DEVMETHOD(smbus_writew, ichsmb_writew), DEVMETHOD(smbus_readb, ichsmb_readb), DEVMETHOD(smbus_readw, ichsmb_readw), DEVMETHOD(smbus_pcall, ichsmb_pcall), DEVMETHOD(smbus_bwrite, ichsmb_bwrite), DEVMETHOD(smbus_bread, ichsmb_bread), { 0, 0 } }; static driver_t ichsmb_pci_driver = { "ichsmb", ichsmb_pci_methods, sizeof(struct ichsmb_softc) }; static devclass_t ichsmb_pci_devclass; DRIVER_MODULE(ichsmb, pci, ichsmb_pci_driver, ichsmb_pci_devclass, 0, 0); static int ichsmb_pci_probe(device_t dev) { /* Check PCI identifier */ switch (pci_get_devid(dev)) { case ID_82801AA: device_set_desc(dev, "Intel 82801AA (ICH) SMBus controller"); break; case ID_82801AB: device_set_desc(dev, "Intel 82801AB (ICH0) SMBus controller"); break; case ID_82801BA: device_set_desc(dev, "Intel 82801BA (ICH2) SMBus controller"); break; case ID_82801CA: device_set_desc(dev, "Intel 82801CA (ICH3) SMBus controller"); break; case ID_82801DC: device_set_desc(dev, "Intel 82801DC (ICH4) SMBus controller"); break; case ID_82801EB: device_set_desc(dev, "Intel 82801EB (ICH5) SMBus controller"); break; case ID_6300ESB: device_set_desc(dev, "Intel 6300ESB (ICH) SMBus controller"); break; default: if (pci_get_class(dev) == PCIC_SERIALBUS && pci_get_subclass(dev) == PCIS_SERIALBUS_SMBUS && pci_get_progif(dev) == PCIS_SERIALBUS_SMBUS_PROGIF) { device_set_desc(dev, "SMBus controller"); return (BUS_PROBE_DEFAULT); /* XXX */ } return (ENXIO); } /* Done */ return (ichsmb_probe(dev)); } static int ichsmb_pci_attach(device_t dev) { const sc_p sc = device_get_softc(dev); u_int32_t cmd; int error; /* Initialize private state */ bzero(sc, sizeof(*sc)); sc->ich_cmd = -1; sc->dev = dev; /* Allocate an I/O range */ sc->io_rid = ICH_SMB_BASE; sc->io_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->io_rid, 0, ~0, 16, RF_ACTIVE); if (sc->io_res == NULL) sc->io_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->io_rid, 0, ~0, 32, RF_ACTIVE); if (sc->io_res == NULL) { log(LOG_ERR, "%s: can't map I/O\n", device_get_nameunit(dev)); error = ENXIO; goto fail; } sc->io_bst = rman_get_bustag(sc->io_res); sc->io_bsh = rman_get_bushandle(sc->io_res); /* Allocate interrupt */ sc->irq_rid = 0; sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, RF_ACTIVE | RF_SHAREABLE); if (sc->irq_res == NULL) { log(LOG_ERR, "%s: can't get IRQ\n", device_get_nameunit(dev)); error = ENXIO; goto fail; } /* Set up interrupt handler */ error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC, ichsmb_device_intr, sc, &sc->irq_handle); if (error != 0) { log(LOG_ERR, "%s: can't setup irq\n", device_get_nameunit(dev)); goto fail; } /* Enable I/O mapping */ cmd = pci_read_config(dev, PCIR_COMMAND, 4); cmd |= PCIM_CMD_PORTEN; pci_write_config(dev, PCIR_COMMAND, cmd, 4); cmd = pci_read_config(dev, PCIR_COMMAND, 4); if ((cmd & PCIM_CMD_PORTEN) == 0) { log(LOG_ERR, "%s: can't enable memory map\n", device_get_nameunit(dev)); error = ENXIO; goto fail; } /* Enable device */ pci_write_config(dev, ICH_HOSTC, ICH_HOSTC_HST_EN, 1); /* Done */ return (ichsmb_attach(dev)); fail: /* Attach failed, release resources */ ichsmb_release_resources(sc); return (error); }