c68534f1d5
command register. The lazy BAR allocation code in FreeBSD sometimes disables this bit when it detects a range conflict, and will re-enable it on demand when a driver allocates the BAR. Thus, the bit is no longer a reliable indication of capability, and should not be checked. This results in the elimination of a lot of code from drivers, and also gives the opportunity to simplify a lot of drivers to use a helper API to set the busmaster enable bit. This changes fixes some recent reports of disk controllers and their associated drives/enclosures disappearing during boot. Submitted by: jhb Reviewed by: jfv, marius, achadd, achim MFC after: 1 day
131 lines
4.0 KiB
C
131 lines
4.0 KiB
C
/*-
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* Copyright (c) 2001,2002,2003 Søren Schmidt <sos@FreeBSD.org>
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* 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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* without modification, immediately at the beginning of the file.
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 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/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/bio.h>
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#include <sys/malloc.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/stdarg.h>
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#include <machine/resource.h>
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#include <machine/bus.h>
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#include <sys/rman.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/pst/pst-iop.h"
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static int
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iop_pci_probe(device_t dev)
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{
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/* tested with actual hardware kindly donated by Promise */
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if (pci_get_devid(dev) == 0x19628086 && pci_get_subvendor(dev) == 0x105a) {
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device_set_desc(dev, "Promise SuperTrak SX6000 ATA RAID controller");
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return BUS_PROBE_DEFAULT;
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}
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/* support the older SuperTrak 100 as well */
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if (pci_get_devid(dev) == 0x19608086 && pci_get_subvendor(dev) == 0x105a) {
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device_set_desc(dev, "Promise SuperTrak 100 ATA RAID controller");
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return BUS_PROBE_DEFAULT;
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}
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return ENXIO;
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}
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static int
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iop_pci_attach(device_t dev)
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{
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struct iop_softc *sc = device_get_softc(dev);
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int rid;
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bzero(sc, sizeof(struct iop_softc));
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/* get resources */
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rid = 0x10;
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sc->r_mem =
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bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
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if (!sc->r_mem)
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return 0;
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rid = 0x00;
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sc->r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
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RF_SHAREABLE | RF_ACTIVE);
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/* now setup the infrastructure to talk to the device */
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pci_enable_busmaster(dev);
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sc->ibase = rman_get_virtual(sc->r_mem);
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sc->reg = (struct i2o_registers *)sc->ibase;
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sc->dev = dev;
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mtx_init(&sc->mtx, "pst lock", NULL, MTX_DEF);
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if (!iop_init(sc))
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return 0;
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return bus_generic_attach(dev);
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}
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static int
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iop_pci_detach(device_t dev)
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{
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struct iop_softc *sc = device_get_softc(dev);
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bus_teardown_intr(dev, sc->r_irq, sc->handle);
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bus_release_resource(dev, SYS_RES_IRQ, 0x00, sc->r_irq);
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bus_release_resource(dev, SYS_RES_MEMORY, 0x10, sc->r_mem);
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return bus_generic_detach(dev);
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}
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static device_method_t pst_pci_methods[] = {
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DEVMETHOD(device_probe, iop_pci_probe),
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DEVMETHOD(device_attach, iop_pci_attach),
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DEVMETHOD(device_detach, iop_pci_detach),
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{ 0, 0 }
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};
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static driver_t pst_pci_driver = {
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"pstpci",
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pst_pci_methods,
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sizeof(struct iop_softc),
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};
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static devclass_t pst_pci_devclass;
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DRIVER_MODULE(pstpci, pci, pst_pci_driver, pst_pci_devclass, 0, 0);
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