FreeBSD/Linux Kernel Cross Reference
sys/dev/ata/chipsets/ata-acard.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_acard_chipinit(device_t dev);
    static int ata_acard_ch_attach(device_t dev);
    static int ata_acard_status(device_t dev);
    static int ata_acard_850_setmode(device_t dev, int target, int mode);
    static int ata_acard_86X_setmode(device_t dev, int target, int mode);
    
    /* misc defines */
    #define ATP_OLD         1
    
    /*
     * Acard chipset support functions
     */
    static int
    ata_acard_probe(device_t dev)
    {
        struct ata_pci_controller *ctlr = device_get_softc(dev);
        static const struct ata_chip_id ids[] =
        {{ ATA_ATP850R, 0, ATP_OLD, 0x00, ATA_UDMA2, "ATP850" },
         { ATA_ATP860A, 0, 0,       0x00, ATA_UDMA4, "ATP860A" },
         { ATA_ATP860R, 0, 0,       0x00, ATA_UDMA4, "ATP860R" },
         { ATA_ATP865A, 0, 0,       0x00, ATA_UDMA6, "ATP865A" },
         { ATA_ATP865R, 0, 0,       0x00, ATA_UDMA6, "ATP865R" },
         { 0, 0, 0, 0, 0, 0}};
    
        if (pci_get_vendor(dev) != ATA_ACARD_ID)
            return ENXIO;
    
        if (!(ctlr->chip = ata_match_chip(dev, ids)))
            return ENXIO;
    
        ata_set_desc(dev);
        ctlr->chipinit = ata_acard_chipinit;
        return (BUS_PROBE_LOW_PRIORITY);
    }
    
    static int
    ata_acard_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_acard_ch_attach;
       ctlr->ch_detach = ata_pci_ch_detach;
       if (ctlr->chip->cfg1 == ATP_OLD) {
           ctlr->setmode = ata_acard_850_setmode;
           /* Work around the lack of channel serialization in ATA_CAM. */
           ctlr->channels = 1;
           device_printf(dev, "second channel ignored\n");
       }
       else
           ctlr->setmode = ata_acard_86X_setmode;
       return 0;
   }
   
   static int
   ata_acard_ch_attach(device_t dev)
   {
       struct ata_channel *ch = device_get_softc(dev);
   
       /* setup the usual register normal pci style */
       if (ata_pci_ch_attach(dev))
           return ENXIO;
   
       ch->hw.status = ata_acard_status;
       ch->flags |= ATA_NO_ATAPI_DMA;
       return 0;
   }
   
   static int
   ata_acard_status(device_t dev)
   {
       struct ata_channel *ch = device_get_softc(dev);
   
       if (ch->dma.flags & ATA_DMA_ACTIVE) {
           int bmstat = ATA_IDX_INB(ch, ATA_BMSTAT_PORT) & ATA_BMSTAT_MASK;
   
           if ((bmstat & (ATA_BMSTAT_ACTIVE | ATA_BMSTAT_INTERRUPT)) !=
               ATA_BMSTAT_INTERRUPT)
               return 0;
           ATA_IDX_OUTB(ch, ATA_BMSTAT_PORT, bmstat & ~ATA_BMSTAT_ERROR);
           DELAY(1);
           ATA_IDX_OUTB(ch, ATA_BMCMD_PORT,
                        ATA_IDX_INB(ch, ATA_BMCMD_PORT) & ~ATA_BMCMD_START_STOP);
           DELAY(1);
       }
       if (ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_BUSY) {
           DELAY(100);
           if (ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_BUSY)
               return 0;
       }
       return 1;
   }
   
   static int
   ata_acard_850_setmode(device_t dev, int target, int mode)
   {
       device_t parent = device_get_parent(dev);
       struct ata_pci_controller *ctlr = device_get_softc(parent);
       struct ata_channel *ch = device_get_softc(dev);
       int devno = (ch->unit << 1) + target;
   
       mode = min(mode, ctlr->chip->max_dma);
       /* XXX SOS missing WDMA0+1 + PIO modes */
       if (mode >= ATA_WDMA2) {
               u_int8_t reg54 = pci_read_config(parent, 0x54, 1);
               
               reg54 &= ~(0x03 << (devno << 1));
               if (mode >= ATA_UDMA0)
                   reg54 |= (((mode & ATA_MODE_MASK) + 1) << (devno << 1));
               pci_write_config(parent, 0x54, reg54, 1);
               pci_write_config(parent, 0x4a, 0xa6, 1);
               pci_write_config(parent, 0x40 + (devno << 1), 0x0301, 2);
       }
       /* we could set PIO mode timings, but we assume the BIOS did that */
       return (mode);
   }
   
   static int
   ata_acard_86X_setmode(device_t dev, int target, int mode)
   {
           device_t parent = device_get_parent(dev);
           struct ata_pci_controller *ctlr = device_get_softc(parent);
           struct ata_channel *ch = device_get_softc(dev);
           int devno = (ch->unit << 1) + target;
   
           mode = min(mode, ctlr->chip->max_dma);
           /* XXX SOS missing WDMA0+1 + PIO modes */
           if (mode >= ATA_WDMA2) {
                   u_int16_t reg44 = pci_read_config(parent, 0x44, 2);
               
                   reg44 &= ~(0x000f << (devno << 2));
                   if (mode >= ATA_UDMA0)
                           reg44 |= (((mode & ATA_MODE_MASK) + 1) << (devno << 2));
                   pci_write_config(parent, 0x44, reg44, 2);
                   pci_write_config(parent, 0x4a, 0xa6, 1);
                   pci_write_config(parent, 0x40 + devno, 0x31, 1);
           }
           /* we could set PIO mode timings, but we assume the BIOS did that */
           return (mode);
   }
   
   ATA_DECLARE_DRIVER(ata_acard);

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