FreeBSD/Linux Kernel Cross Reference
sys/dev/ata/chipsets/ata-marvell.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_marvell_chipinit(device_t dev);
    static int ata_marvell_ch_attach(device_t dev);
    static int ata_marvell_setmode(device_t dev, int target, int mode);
    static int ata_marvell_dummy_chipinit(device_t dev);
    
    /* misc defines */
    #define MV_61XX         61
    #define MV_91XX         91
    
    /*
     * Marvell chipset support functions
     */
    #define ATA_MV_HOST_BASE(ch) \
            ((ch->unit & 3) * 0x0100) + (ch->unit > 3 ? 0x30000 : 0x20000)
    #define ATA_MV_EDMA_BASE(ch) \
            ((ch->unit & 3) * 0x2000) + (ch->unit > 3 ? 0x30000 : 0x20000)
    
    struct ata_marvell_response {
        u_int16_t   tag;
        u_int8_t    edma_status;
        u_int8_t    dev_status;
        u_int32_t   timestamp;
    };
    
    struct ata_marvell_dma_prdentry {
        u_int32_t addrlo;
        u_int32_t count;
        u_int32_t addrhi;
        u_int32_t reserved;
    };  
    
    static int
    ata_marvell_probe(device_t dev)
    {
        struct ata_pci_controller *ctlr = device_get_softc(dev);
        static const struct ata_chip_id ids[] =
        {{ ATA_M88SE6101, 0, 0, MV_61XX, ATA_UDMA6, "88SE6101" },
         { ATA_M88SE6102, 0, 0, MV_61XX, ATA_UDMA6, "88SE6102" },
         { ATA_M88SE6111, 0, 1, MV_61XX, ATA_UDMA6, "88SE6111" },
         { ATA_M88SE6121, 0, 2, MV_61XX, ATA_UDMA6, "88SE6121" },
         { ATA_M88SE6141, 0, 4, MV_61XX, ATA_UDMA6, "88SE6141" },
         { ATA_M88SE6145, 0, 4, MV_61XX, ATA_UDMA6, "88SE6145" },
         { 0x91a41b4b,    0, 0, MV_91XX, ATA_UDMA6, "88SE912x" },
         { 0, 0, 0, 0, 0, 0}};
   
       if (pci_get_vendor(dev) != ATA_MARVELL_ID &&
           pci_get_vendor(dev) != ATA_MARVELL2_ID)
           return ENXIO;
   
       if (!(ctlr->chip = ata_match_chip(dev, ids)))
           return ENXIO;
   
       ata_set_desc(dev);
   
       switch (ctlr->chip->cfg2) {
       case MV_61XX:
           ctlr->chipinit = ata_marvell_chipinit;
           break;
       case MV_91XX:
           ctlr->chipinit = ata_marvell_dummy_chipinit;
           break;
       }
       return (BUS_PROBE_LOW_PRIORITY);
   }
   
   static int
   ata_marvell_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;
           /* 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_marvell_ch_attach;
           ctlr->ch_detach = ata_pci_ch_detach;
           ctlr->reset = ata_generic_reset;
           ctlr->setmode = ata_marvell_setmode;
           ctlr->channels = 1;
           return (0);
   }
   
   static int
   ata_marvell_ch_attach(device_t dev)
   {
           struct ata_channel *ch = device_get_softc(dev);
           int error;
   
           error = ata_pci_ch_attach(dev);
           /* dont use 32 bit PIO transfers */
           ch->flags |= ATA_USE_16BIT;
           ch->flags |= ATA_CHECKS_CABLE;
           return (error);
   }
   
   static int
   ata_marvell_setmode(device_t dev, int target, int mode)
   {
           struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
           struct ata_channel *ch = device_get_softc(dev);
   
           mode = min(mode, ctlr->chip->max_dma);
           /* Check for 80pin cable present. */
           if (ata_dma_check_80pin && mode > ATA_UDMA2 &&
               ATA_IDX_INB(ch, ATA_BMDEVSPEC_0) & 0x01) {
                   ata_print_cable(dev, "controller");
                   mode = ATA_UDMA2;
           }
           /* Nothing to do to setup mode, the controller snoop SET_FEATURE cmd. */
           return (mode);
   }
   
   static int
   ata_marvell_dummy_chipinit(device_t dev)
   {
           struct ata_pci_controller *ctlr = device_get_softc(dev);
   
           ctlr->channels = 0;
           return (0);
   }
   
   ATA_DECLARE_DRIVER(ata_marvell);

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