3036de3c48
Legacy ata(4) -> BUS_PROBE_LOW_PRIORITY; more functional ahci(4), siis(4), mvs(4) -> BUS_PROBE_DEFAULT; BUS_PROBE_VENDOR leave for vendor drivers. MFC after: 2 weeks
112 lines
3.5 KiB
C
112 lines
3.5 KiB
C
/*-
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* Copyright (c) 1998 - 2008 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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*
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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/module.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/ata.h>
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#include <sys/bus.h>
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#include <sys/endian.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 <sys/sema.h>
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#include <sys/taskqueue.h>
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#include <vm/uma.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/ata/ata-all.h>
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#include <dev/ata/ata-pci.h>
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#include <ata_if.h>
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/* local prototypes */
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static int ata_cypress_chipinit(device_t dev);
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static int ata_cypress_setmode(device_t dev, int target, int mode);
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/*
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* Cypress chipset support functions
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*/
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static int
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ata_cypress_probe(device_t dev)
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{
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struct ata_pci_controller *ctlr = device_get_softc(dev);
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/*
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* the Cypress chip is a mess, it contains two ATA functions, but
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* both channels are visible on the first one.
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* simply ignore the second function for now, as the right
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* solution (ignoring the second channel on the first function)
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* doesn't work with the crappy ATA interrupt setup on the alpha.
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*/
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if (pci_get_devid(dev) == ATA_CYPRESS_82C693 &&
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pci_get_function(dev) == 1 &&
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pci_get_subclass(dev) == PCIS_STORAGE_IDE) {
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device_set_desc(dev, "Cypress 82C693 ATA controller");
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ctlr->chipinit = ata_cypress_chipinit;
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return (BUS_PROBE_LOW_PRIORITY);
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}
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return ENXIO;
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}
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static int
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ata_cypress_chipinit(device_t dev)
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{
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struct ata_pci_controller *ctlr = device_get_softc(dev);
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if (ata_setup_interrupt(dev, ata_generic_intr))
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return ENXIO;
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ctlr->setmode = ata_cypress_setmode;
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return 0;
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}
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static int
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ata_cypress_setmode(device_t dev, int target, int mode)
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{
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device_t parent = device_get_parent(dev);
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struct ata_channel *ch = device_get_softc(dev);
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mode = min(mode, ATA_WDMA2);
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/* XXX SOS missing WDMA0+1 + PIO modes */
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if (mode == ATA_WDMA2) {
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pci_write_config(parent, ch->unit ? 0x4e : 0x4c, 0x2020, 2);
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}
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/* we could set PIO mode timings, but we assume the BIOS did that */
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return (mode);
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}
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ATA_DECLARE_DRIVER(ata_cypress);
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