FreeBSD/Linux Kernel Cross Reference
sys/dev/ata/chipsets/ata-national.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org>
      * 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,
     *    without modification, immediately at the beginning of the file.
     * 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 ``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 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.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/module.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/ata.h>
    #include <sys/bus.h>
    #include <sys/endian.h>
    #include <sys/malloc.h>
    #include <sys/lock.h>
    #include <sys/mutex.h>
    #include <sys/sema.h>
    #include <sys/taskqueue.h>
    #include <vm/uma.h>
    #include <machine/stdarg.h>
    #include <machine/resource.h>
    #include <machine/bus.h>
    #include <sys/rman.h>
    #include <dev/pci/pcivar.h>
    #include <dev/pci/pcireg.h>
    #include <dev/ata/ata-all.h>
    #include <dev/ata/ata-pci.h>
    #include <ata_if.h>
    
    /* local prototypes */
    static int ata_national_chipinit(device_t dev);
    static int ata_national_ch_attach(device_t dev);
    static int ata_national_setmode(device_t dev, int target, int mode);
    
    /*
     * National chipset support functions
     */
    static int
    ata_national_probe(device_t dev)
    {
        struct ata_pci_controller *ctlr = device_get_softc(dev);
    
        /* this chip is a clone of the Cyrix chip, bugs and all */
        if (pci_get_devid(dev) == ATA_SC1100) {
            device_set_desc(dev, "National Geode SC1100 ATA33 controller");
            ctlr->chipinit = ata_national_chipinit;
            return (BUS_PROBE_LOW_PRIORITY);
        }
        return ENXIO;
    }
        
    static int
    ata_national_chipinit(device_t dev)
    {
        struct ata_pci_controller *ctlr = device_get_softc(dev);
        
        if (ata_setup_interrupt(dev, ata_generic_intr))
            return ENXIO;
                        
        ctlr->ch_attach = ata_national_ch_attach;
        ctlr->setmode = ata_national_setmode;
        return 0;
    }
    
    static int
    ata_national_ch_attach(device_t dev)
    {
            struct ata_channel *ch = device_get_softc(dev);
    
            ch->dma.alignment = 16;
            ch->dma.max_iosize = 64 * DEV_BSIZE;
            return (ata_pci_ch_attach(dev));
    }
    
   static int
   ata_national_setmode(device_t dev, int target, int mode)
   {
           device_t parent = device_get_parent(dev);
           struct ata_channel *ch = device_get_softc(dev);
           int devno = (ch->unit << 1) + target;
           int piomode;
           static const uint32_t piotiming[] =
               { 0x9172d132, 0x21717121, 0x00803020, 0x20102010, 0x00100010,
                 0x9172d132, 0x20102010, 0x00100010 };
           static const uint32_t dmatiming[] =
               { 0x80077771, 0x80012121, 0x80002020 };
           static const uint32_t udmatiming[] =
               { 0x80921250, 0x80911140, 0x80911030 };
   
           mode = min(mode, ATA_UDMA2);
   
           if (mode >= ATA_UDMA0) {
               pci_write_config(parent, 0x44 + (devno << 3),
                                udmatiming[mode & ATA_MODE_MASK], 4);
               piomode = ATA_PIO4;
           } else if (mode >= ATA_WDMA0) {
               pci_write_config(parent, 0x44 + (devno << 3),
                                dmatiming[mode & ATA_MODE_MASK], 4);
               piomode = mode;
           } else {
               pci_write_config(parent, 0x44 + (devno << 3),
                                pci_read_config(parent, 0x44 + (devno << 3), 4) |
                                0x80000000, 4);
               piomode = mode;
           }
           pci_write_config(parent, 0x40 + (devno << 3),
                            piotiming[ata_mode2idx(piomode)], 4);
           return (mode);
   }
   
   ATA_DECLARE_DRIVER(ata_national);

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