/*- * Copyright (c) 2003 M. Warner Losh. All Rights Reserved. * Copyright (c) 2000,2001 Jonathan Chen. 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. * * $FreeBSD: src/sys/dev/cardbus/cardbus.c,v 1.28 2002/11/27 17:30:41 imp Exp $ * $FreeBSD @153896,@153900,@159532,@166104 merged * $FreeBSD @169620,@169633 merged */ /* * Cardbus Bus Driver * * much of the bus code was stolen directly from sys/pci/pci.c * (Copyright (c) 1997, Stefan Esser ) * * Written by Jonathan Chen */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "power_if.h" #include "pcib_if.h" /* sysctl vars */ SYSCTL_NODE(_hw, OID_AUTO, cardbus, CTLFLAG_RD, 0, "CardBus parameters"); int cardbus_debug = 0; TUNABLE_INT("hw.cardbus.debug", &cardbus_debug); SYSCTL_INT(_hw_cardbus, OID_AUTO, debug, CTLFLAG_RW, &cardbus_debug, 0, "CardBus debug"); int cardbus_cis_debug = 0; TUNABLE_INT("hw.cardbus.cis_debug", &cardbus_cis_debug); SYSCTL_INT(_hw_cardbus, OID_AUTO, cis_debug, CTLFLAG_RW, &cardbus_cis_debug, 0, "CardBus CIS debug"); #define DPRINTF(a) if (cardbus_debug) kprintf a #define DEVPRINTF(x) if (cardbus_debug) device_printf x static int cardbus_attach(device_t cbdev); static int cardbus_attach_card(device_t cbdev); static int cardbus_detach(device_t cbdev); static int cardbus_detach_card(device_t cbdev); static void cardbus_device_setup_regs(pcicfgregs *cfg); static void cardbus_driver_added(device_t cbdev, driver_t *driver); static int cardbus_probe(device_t cbdev); static int cardbus_read_ivar(device_t cbdev, device_t child, int which, uintptr_t *result); static void cardbus_release_all_resources(device_t cbdev, struct cardbus_devinfo *dinfo); static int cardbus_write_ivar(device_t cbdev, device_t child, int which, uintptr_t value); /************************************************************************/ /* Probe/Attach */ /************************************************************************/ static int cardbus_probe(device_t cbdev) { device_set_desc(cbdev, "CardBus bus"); return 0; } static int cardbus_attach(device_t cbdev) { return 0; } static int cardbus_detach(device_t cbdev) { cardbus_detach_card(cbdev); return 0; } static int cardbus_suspend(device_t self) { cardbus_detach_card(self); return (0); } static int cardbus_resume(device_t self) { return (0); } /************************************************************************/ /* Attach/Detach card */ /************************************************************************/ static void cardbus_device_setup_regs(pcicfgregs *cfg) { device_t dev = cfg->dev; int i; /* * Some cards power up with garbage in their BARs. This * code clears all that junk out. */ for (i = 0; i < PCIR_MAX_BAR_0; i++) pci_write_config(dev, PCIR_BAR(i), 0, 4); cfg->intline = pci_get_irq(device_get_parent(device_get_parent(dev))); pci_write_config(dev, PCIR_INTLINE, cfg->intline, 1); pci_write_config(dev, PCIR_CACHELNSZ, 0x08, 1); pci_write_config(dev, PCIR_LATTIMER, 0xa8, 1); pci_write_config(dev, PCIR_MINGNT, 0x14, 1); pci_write_config(dev, PCIR_MAXLAT, 0x14, 1); } static int cardbus_attach_card(device_t cbdev) { device_t brdev = device_get_parent(cbdev); device_t child; int cardattached = 0; int bus, slot, func, domain; cardbus_detach_card(cbdev); /* detach existing cards */ POWER_ENABLE_SOCKET(brdev, cbdev); bus = pcib_get_bus(cbdev); domain = pcib_get_domain(cbdev); /* For each function, set it up and try to attach a driver to it */ for (slot = 0; slot <= CARDBUS_SLOTMAX; slot++) { int cardbusfunchigh = 0; for (func = 0; func <= cardbusfunchigh; func++) { struct cardbus_devinfo *dinfo; dinfo = (struct cardbus_devinfo *) pci_read_device(brdev, domain, bus, slot, func, sizeof(struct cardbus_devinfo)); if (dinfo == NULL) continue; if (dinfo->pci.cfg.mfdev) cardbusfunchigh = CARDBUS_FUNCMAX; child = device_add_child(cbdev, NULL, -1); if (child == NULL) { DEVPRINTF((cbdev, "Cannot add child!\n")); pci_freecfg((struct pci_devinfo *)dinfo); continue; } dinfo->pci.cfg.dev = child; resource_list_init(&dinfo->pci.resources); device_set_ivars(child, dinfo); if (cardbus_do_cis(cbdev, child) != 0) { DEVPRINTF((cbdev, "Warning: Bogus CIS ignored\n")); } pci_cfg_save(dinfo->pci.cfg.dev, &dinfo->pci, 0); pci_cfg_restore(dinfo->pci.cfg.dev, &dinfo->pci); cardbus_device_setup_regs(&dinfo->pci.cfg); pci_add_resources(brdev, cbdev, child, 1, dinfo->mprefetchable); pci_print_verbose(&dinfo->pci); if (device_probe_and_attach(child) != 0) pci_cfg_save(dinfo->pci.cfg.dev, &dinfo->pci, 1); else cardattached++; } } if (cardattached > 0) return (0); POWER_DISABLE_SOCKET(brdev, cbdev); return (ENOENT); } static int cardbus_detach_card(device_t cbdev) { int numdevs; device_t *devlist; int tmp; int err = 0; if (device_get_children(cbdev, &devlist, &numdevs) != 0) return (ENOENT); if (numdevs == 0) { kfree(devlist, M_TEMP); return (ENOENT); } for (tmp = 0; tmp < numdevs; tmp++) { struct cardbus_devinfo *dinfo = device_get_ivars(devlist[tmp]); int status = device_get_state(devlist[tmp]); if (dinfo->pci.cfg.dev != devlist[tmp]) device_printf(cbdev, "devinfo dev mismatch\n"); if (status == DS_ATTACHED || status == DS_BUSY) device_detach(devlist[tmp]); cardbus_release_all_resources(cbdev, dinfo); device_delete_child(cbdev, devlist[tmp]); pci_freecfg((struct pci_devinfo *)dinfo); } POWER_DISABLE_SOCKET(device_get_parent(cbdev), cbdev); kfree(devlist, M_TEMP); return (err); } static void cardbus_driver_added(device_t cbdev, driver_t *driver) { int numdevs; device_t *devlist; device_t dev; int i; struct cardbus_devinfo *dinfo; DEVICE_IDENTIFY(driver, cbdev); if (device_get_children(cbdev, &devlist, &numdevs) != 0) return; /* * If there are no drivers attached, but there are children, * then power the card up. */ for (i = 0; i < numdevs; i++) { dev = devlist[i]; if (device_get_state(dev) != DS_NOTPRESENT) break; } if (i > 0 && i == numdevs) POWER_ENABLE_SOCKET(device_get_parent(cbdev), cbdev); for (i = 0; i < numdevs; i++) { dev = devlist[i]; if (device_get_state(dev) != DS_NOTPRESENT) continue; dinfo = device_get_ivars(dev); pci_print_verbose(&dinfo->pci); if (bootverbose) kprintf("pci%d:%d:%d:%d: reprobing on driver added\n", dinfo->pci.cfg.domain, dinfo->pci.cfg.bus, dinfo->pci.cfg.slot, dinfo->pci.cfg.func); pci_cfg_restore(dinfo->pci.cfg.dev, &dinfo->pci); if (device_probe_and_attach(dev) != 0) pci_cfg_save(dev, &dinfo->pci, 1); } kfree(devlist, M_TEMP); } static void cardbus_release_all_resources(device_t cbdev, struct cardbus_devinfo *dinfo) { struct resource_list_entry *rle; /* Free all allocated resources */ SLIST_FOREACH(rle, &dinfo->pci.resources, link) { if (rle->res) { BUS_RELEASE_RESOURCE(device_get_parent(cbdev), cbdev, rle->type, rle->rid, rle->res); rle->res = NULL; /* * zero out config so the card won't acknowledge * access to the space anymore */ pci_write_config(dinfo->pci.cfg.dev, rle->rid, 0, 4); } } resource_list_free(&dinfo->pci.resources); } /************************************************************************/ /* Other Bus Methods */ /************************************************************************/ static int cardbus_read_ivar(device_t cbdev, device_t child, int which, uintptr_t *result) { struct cardbus_devinfo *dinfo; dinfo = device_get_ivars(child); switch (which) { case PCI_IVAR_ETHADDR: /* * The generic accessor doesn't deal with failure, so * we set the return value, then return an error. */ if (dinfo->fepresent & (1 << PCCARD_TPLFE_TYPE_LAN_NID)) { *((uint8_t **) result) = dinfo->funce.lan.nid; break; } *((uint8_t **) result) = NULL; return (EINVAL); default: return (pci_read_ivar(cbdev, child, which, result)); } return 0; } static int cardbus_write_ivar(device_t cbdev, device_t child, int which, uintptr_t value) { return(pci_write_ivar(cbdev, child, which, value)); } static device_method_t cardbus_methods[] = { /* Device interface */ DEVMETHOD(device_probe, cardbus_probe), DEVMETHOD(device_attach, cardbus_attach), DEVMETHOD(device_detach, cardbus_detach), DEVMETHOD(device_suspend, cardbus_suspend), DEVMETHOD(device_resume, cardbus_resume), /* Bus interface */ DEVMETHOD(bus_read_ivar, cardbus_read_ivar), DEVMETHOD(bus_write_ivar, cardbus_write_ivar), DEVMETHOD(bus_driver_added, cardbus_driver_added), /* Card Interface */ DEVMETHOD(card_attach_card, cardbus_attach_card), DEVMETHOD(card_detach_card, cardbus_detach_card), DEVMETHOD_END }; DEFINE_CLASS_1(cardbus, cardbus_driver, cardbus_methods, 0, pci_driver); static devclass_t cardbus_devclass; DRIVER_MODULE(cardbus, cbb, cardbus_driver, cardbus_devclass, NULL, NULL); MODULE_VERSION(cardbus, 1);