FreeBSD/Linux Kernel Cross Reference
sys/dev/ata/chipsets/ata-jmicron.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_jmicron_chipinit(device_t dev);
    static int ata_jmicron_ch_attach(device_t dev);
    static int ata_jmicron_setmode(device_t dev, int target, int mode);
    
    /*
     * JMicron chipset support functions
     */
    static int
    ata_jmicron_probe(device_t dev)
    {
        struct ata_pci_controller *ctlr = device_get_softc(dev);
        const struct ata_chip_id *idx;
        static const struct ata_chip_id ids[] =
        {{ ATA_JMB360, 0, 1, 0, ATA_SA300, "JMB360" },
         { ATA_JMB361, 0, 1, 1, ATA_UDMA6, "JMB361" },
         { ATA_JMB362, 0, 2, 0, ATA_SA300, "JMB362" },
         { ATA_JMB363, 0, 2, 1, ATA_UDMA6, "JMB363" },
         { ATA_JMB365, 0, 1, 2, ATA_UDMA6, "JMB365" },
         { ATA_JMB366, 0, 2, 2, ATA_UDMA6, "JMB366" },
         { ATA_JMB368, 0, 0, 1, ATA_UDMA6, "JMB368" },
         { ATA_JMB368_2, 0, 0, 1, ATA_UDMA6, "JMB368" },
         { 0, 0, 0, 0, 0, 0}};
        char buffer[64];
    
        if (pci_get_vendor(dev) != ATA_JMICRON_ID)
            return ENXIO;
    
        if (!(idx = ata_match_chip(dev, ids)))
            return ENXIO;
    
        sprintf(buffer, "JMicron %s %s controller",
            idx->text, ata_mode2str(idx->max_dma));
        device_set_desc_copy(dev, buffer);
        ctlr->chip = idx;
        ctlr->chipinit = ata_jmicron_chipinit;
        return (BUS_PROBE_LOW_PRIORITY);
    }
    
    static int
    ata_jmicron_chipinit(device_t dev)
    {
        struct ata_pci_controller *ctlr = device_get_softc(dev);
        device_t child;
    
       if (ata_setup_interrupt(dev, ata_generic_intr))
           return ENXIO;
   
       /* do we have multiple PCI functions ? */
       if (pci_read_config(dev, 0xdf, 1) & 0x40) {
           /* If this was not claimed by AHCI, then we are on the PATA part */
           ctlr->ch_attach = ata_jmicron_ch_attach;
           ctlr->ch_detach = ata_pci_ch_detach;
           ctlr->reset = ata_generic_reset;
           ctlr->setmode = ata_jmicron_setmode;
           ctlr->channels = ctlr->chip->cfg2;
       }
       else {
           /* set controller configuration to a combined setup we support */
           pci_write_config(dev, 0x40, 0x80c0a131, 4);
           pci_write_config(dev, 0x80, 0x01200000, 4);
           /* Create AHCI subdevice if AHCI part present. */
           if (ctlr->chip->cfg1) {
                   child = device_add_child(dev, NULL, -1);
                   if (child != NULL) {
                       device_set_ivars(child, (void *)(intptr_t)-1);
                       bus_generic_attach(dev);
                   }
           }
           ctlr->ch_attach = ata_jmicron_ch_attach;
           ctlr->ch_detach = ata_pci_ch_detach;
           ctlr->reset = ata_generic_reset;
           ctlr->setmode = ata_jmicron_setmode;
           ctlr->channels = ctlr->chip->cfg2;
       }
       return 0;
   }
   
   static int
   ata_jmicron_ch_attach(device_t dev)
   {
           struct ata_channel *ch = device_get_softc(dev);
           int error;
   
           error = ata_pci_ch_attach(dev);
           ch->flags |= ATA_CHECKS_CABLE;
           return (error);
   }
   
   static int
   ata_jmicron_setmode(device_t dev, int target, int mode)
   {
           device_t parent = device_get_parent(dev);
           struct ata_pci_controller *ctlr = device_get_softc(parent);
   
           mode = min(mode, ctlr->chip->max_dma);
           /* check for 80pin cable present */
           if (ata_dma_check_80pin && mode > ATA_UDMA2 &&
               pci_read_config(parent, 0x40, 1) & 0x08) {
                   ata_print_cable(dev, "controller");
                   mode = ATA_UDMA2;
           }
           /* Nothing to do to setup mode, the controller snoop SET_FEATURE cmd. */
           return (mode);
   }
   
   ATA_DECLARE_DRIVER(ata_jmicron);

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