a7de0b74a7
read before we configure the card, so we can implement /dev/cardbus*.cis. Also, do this on a per-child basis, so we now have a different name than before. I think i'll have to fix that for some legacy tools to keep working. I can now do a dumpcis on my running atheros card and have it still work!
371 lines
10 KiB
C
371 lines
10 KiB
C
/*-
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* Copyright (c) 2003-2008 M. Warner Losh. All Rights Reserved.
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* Copyright (c) 2000,2001 Jonathan Chen. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <sys/pciio.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pci_private.h>
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#include <dev/cardbus/cardbusreg.h>
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#include <dev/cardbus/cardbusvar.h>
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#include <dev/cardbus/cardbus_cis.h>
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#include <dev/pccard/pccard_cis.h>
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#include <dev/pccard/pccardvar.h>
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#include "power_if.h"
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#include "pcib_if.h"
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/* sysctl vars */
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SYSCTL_NODE(_hw, OID_AUTO, cardbus, CTLFLAG_RD, 0, "CardBus parameters");
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int cardbus_debug = 0;
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TUNABLE_INT("hw.cardbus.debug", &cardbus_debug);
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SYSCTL_INT(_hw_cardbus, OID_AUTO, debug, CTLFLAG_RW,
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&cardbus_debug, 0,
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"CardBus debug");
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int cardbus_cis_debug = 0;
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TUNABLE_INT("hw.cardbus.cis_debug", &cardbus_cis_debug);
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SYSCTL_INT(_hw_cardbus, OID_AUTO, cis_debug, CTLFLAG_RW,
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&cardbus_cis_debug, 0,
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"CardBus CIS debug");
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#define DPRINTF(a) if (cardbus_debug) printf a
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#define DEVPRINTF(x) if (cardbus_debug) device_printf x
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static int cardbus_attach(device_t cbdev);
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static int cardbus_attach_card(device_t cbdev);
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static int cardbus_detach(device_t cbdev);
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static int cardbus_detach_card(device_t cbdev);
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static void cardbus_device_setup_regs(pcicfgregs *cfg);
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static void cardbus_driver_added(device_t cbdev, driver_t *driver);
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static int cardbus_probe(device_t cbdev);
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static int cardbus_read_ivar(device_t cbdev, device_t child, int which,
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uintptr_t *result);
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static void cardbus_release_all_resources(device_t cbdev,
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struct cardbus_devinfo *dinfo);
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static int cardbus_write_ivar(device_t cbdev, device_t child, int which,
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uintptr_t value);
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/************************************************************************/
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/* Probe/Attach */
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/************************************************************************/
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static int
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cardbus_probe(device_t cbdev)
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{
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device_set_desc(cbdev, "CardBus bus");
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return (0);
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}
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static int
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cardbus_attach(device_t cbdev)
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{
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struct cardbus_softc *sc;
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sc = device_get_softc(cbdev);
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sc->sc_dev = cbdev;
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return (0);
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}
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static int
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cardbus_detach(device_t cbdev)
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{
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cardbus_detach_card(cbdev);
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return (0);
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}
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static int
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cardbus_suspend(device_t self)
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{
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cardbus_detach_card(self);
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return (0);
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}
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static int
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cardbus_resume(device_t self)
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{
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return (0);
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}
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/************************************************************************/
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/* Attach/Detach card */
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/************************************************************************/
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static void
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cardbus_device_setup_regs(pcicfgregs *cfg)
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{
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device_t dev = cfg->dev;
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int i;
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/*
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* Some cards power up with garbage in their BARs. This
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* code clears all that junk out.
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*/
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for (i = 0; i < PCI_MAX_BAR_0; i++)
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pci_write_config(dev, PCIR_BAR(i), 0, 4);
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cfg->intline =
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pci_get_irq(device_get_parent(device_get_parent(dev)));
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pci_write_config(dev, PCIR_INTLINE, cfg->intline, 1);
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pci_write_config(dev, PCIR_CACHELNSZ, 0x08, 1);
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pci_write_config(dev, PCIR_LATTIMER, 0xa8, 1);
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pci_write_config(dev, PCIR_MINGNT, 0x14, 1);
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pci_write_config(dev, PCIR_MAXLAT, 0x14, 1);
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}
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static int
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cardbus_attach_card(device_t cbdev)
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{
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device_t brdev = device_get_parent(cbdev);
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device_t child;
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int bus, domain, slot, func;
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int cardattached = 0;
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int cardbusfunchigh = 0;
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struct cardbus_softc *sc;
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sc = device_get_softc(cbdev);
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cardbus_detach_card(cbdev); /* detach existing cards */
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POWER_ENABLE_SOCKET(brdev, cbdev);
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domain = pcib_get_domain(cbdev);
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bus = pcib_get_bus(cbdev);
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slot = 0;
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/* For each function, set it up and try to attach a driver to it */
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for (func = 0; func <= cardbusfunchigh; func++) {
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struct cardbus_devinfo *dinfo;
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dinfo = (struct cardbus_devinfo *)
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pci_read_device(brdev, domain, bus, slot, func,
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sizeof(struct cardbus_devinfo));
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if (dinfo == NULL)
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continue;
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if (dinfo->pci.cfg.mfdev)
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cardbusfunchigh = PCI_FUNCMAX;
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child = device_add_child(cbdev, NULL, -1);
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if (child == NULL) {
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DEVPRINTF((cbdev, "Cannot add child!\n"));
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pci_freecfg((struct pci_devinfo *)dinfo);
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continue;
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}
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dinfo->pci.cfg.dev = child;
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resource_list_init(&dinfo->pci.resources);
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device_set_ivars(child, dinfo);
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cardbus_device_create(sc, dinfo, cbdev, child);
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if (cardbus_do_cis(cbdev, child) != 0)
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DEVPRINTF((cbdev, "Warning: Bogus CIS ignored\n"));
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pci_cfg_save(dinfo->pci.cfg.dev, &dinfo->pci, 0);
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pci_cfg_restore(dinfo->pci.cfg.dev, &dinfo->pci);
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cardbus_device_setup_regs(&dinfo->pci.cfg);
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pci_add_resources(cbdev, child, 1, dinfo->mprefetchable);
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pci_print_verbose(&dinfo->pci);
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if (device_probe_and_attach(child) == 0)
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cardattached++;
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else
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pci_cfg_save(dinfo->pci.cfg.dev, &dinfo->pci, 1);
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}
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if (cardattached > 0)
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return (0);
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POWER_DISABLE_SOCKET(brdev, cbdev);
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return (ENOENT);
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}
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static int
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cardbus_detach_card(device_t cbdev)
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{
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int numdevs;
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device_t *devlist;
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int tmp;
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int err = 0;
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if (device_get_children(cbdev, &devlist, &numdevs) != 0)
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return (ENOENT);
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if (numdevs == 0) {
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free(devlist, M_TEMP);
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return (ENOENT);
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}
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for (tmp = 0; tmp < numdevs; tmp++) {
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struct cardbus_devinfo *dinfo = device_get_ivars(devlist[tmp]);
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int status = device_get_state(devlist[tmp]);
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if (dinfo->pci.cfg.dev != devlist[tmp])
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device_printf(cbdev, "devinfo dev mismatch\n");
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if (status == DS_ATTACHED || status == DS_BUSY)
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device_detach(devlist[tmp]);
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cardbus_release_all_resources(cbdev, dinfo);
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cardbus_device_destroy(dinfo);
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device_delete_child(cbdev, devlist[tmp]);
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pci_freecfg((struct pci_devinfo *)dinfo);
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}
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POWER_DISABLE_SOCKET(device_get_parent(cbdev), cbdev);
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free(devlist, M_TEMP);
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return (err);
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}
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static void
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cardbus_driver_added(device_t cbdev, driver_t *driver)
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{
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int numdevs;
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device_t *devlist;
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device_t dev;
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int i;
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struct cardbus_devinfo *dinfo;
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DEVICE_IDENTIFY(driver, cbdev);
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if (device_get_children(cbdev, &devlist, &numdevs) != 0)
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return;
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/*
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* If there are no drivers attached, but there are children,
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* then power the card up.
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*/
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for (i = 0; i < numdevs; i++) {
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dev = devlist[i];
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if (device_get_state(dev) != DS_NOTPRESENT)
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break;
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}
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if (i > 0 && i == numdevs)
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POWER_ENABLE_SOCKET(device_get_parent(cbdev), cbdev);
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for (i = 0; i < numdevs; i++) {
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dev = devlist[i];
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if (device_get_state(dev) != DS_NOTPRESENT)
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continue;
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dinfo = device_get_ivars(dev);
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pci_print_verbose(&dinfo->pci);
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pci_cfg_restore(dinfo->pci.cfg.dev, &dinfo->pci);
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if (device_probe_and_attach(dev) != 0)
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pci_cfg_save(dev, &dinfo->pci, 1);
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}
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free(devlist, M_TEMP);
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}
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static void
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cardbus_release_all_resources(device_t cbdev, struct cardbus_devinfo *dinfo)
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{
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struct resource_list_entry *rle;
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/* Free all allocated resources */
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STAILQ_FOREACH(rle, &dinfo->pci.resources, link) {
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if (rle->res) {
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BUS_RELEASE_RESOURCE(device_get_parent(cbdev),
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cbdev, rle->type, rle->rid, rle->res);
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rle->res = NULL;
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/*
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* zero out config so the card won't acknowledge
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* access to the space anymore. XXX doesn't handle
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* 64-bit bars.
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*/
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pci_write_config(dinfo->pci.cfg.dev, rle->rid, 0, 4);
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}
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}
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resource_list_free(&dinfo->pci.resources);
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}
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/************************************************************************/
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/* Other Bus Methods */
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/************************************************************************/
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static int
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cardbus_read_ivar(device_t cbdev, device_t child, int which, uintptr_t *result)
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{
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struct cardbus_devinfo *dinfo;
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pcicfgregs *cfg;
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dinfo = device_get_ivars(child);
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cfg = &dinfo->pci.cfg;
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switch (which) {
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case PCI_IVAR_ETHADDR:
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/*
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* The generic accessor doesn't deal with failure, so
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* we set the return value, then return an error.
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*/
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if (dinfo->fepresent & (1 << PCCARD_TPLFE_TYPE_LAN_NID)) {
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*((uint8_t **) result) = dinfo->funce.lan.nid;
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break;
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}
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*((uint8_t **) result) = NULL;
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return (EINVAL);
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default:
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return (pci_read_ivar(cbdev, child, which, result));
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}
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return 0;
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}
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static int
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cardbus_write_ivar(device_t cbdev, device_t child, int which, uintptr_t value)
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{
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return(pci_write_ivar(cbdev, child, which, value));
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}
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static device_method_t cardbus_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, cardbus_probe),
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DEVMETHOD(device_attach, cardbus_attach),
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DEVMETHOD(device_detach, cardbus_detach),
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DEVMETHOD(device_suspend, cardbus_suspend),
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DEVMETHOD(device_resume, cardbus_resume),
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/* Bus interface */
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DEVMETHOD(bus_read_ivar, cardbus_read_ivar),
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DEVMETHOD(bus_write_ivar, cardbus_write_ivar),
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DEVMETHOD(bus_driver_added, cardbus_driver_added),
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/* Card Interface */
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DEVMETHOD(card_attach_card, cardbus_attach_card),
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DEVMETHOD(card_detach_card, cardbus_detach_card),
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{0,0}
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};
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DEFINE_CLASS_1(cardbus, cardbus_driver, cardbus_methods,
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sizeof(struct cardbus_softc), pci_driver);
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static devclass_t cardbus_devclass;
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DRIVER_MODULE(cardbus, cbb, cardbus_driver, cardbus_devclass, 0, 0);
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MODULE_VERSION(cardbus, 1);
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