sys/dev/disk/nata/chipsets/ata-national.c

   1 /*-
   2  * Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer,
  10  *    without modification, immediately at the beginning of the file.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 /* local prototypes */
  28 static int ata_national_chipinit(device_t dev);
  29 static void ata_national_setmode(device_t dev, int mode);
  30
  31 /*
  32  * National chipset support functions
  33  */
  34 int
  35 ata_national_ident(device_t dev)
  36 {
  37     struct ata_pci_controller *ctlr = device_get_softc(dev);
  38
  39     /* this chip is a clone of the Cyrix chip, bugs and all */
  40     if (pci_get_devid(dev) == ATA_SC1100) {
  41         device_set_desc(dev, "National Geode SC1100 ATA33 controller");
  42         ctlr->chipinit = ata_national_chipinit;
  43         return 0;
  44     }
  45     return ENXIO;
  46 }
  47
  48 static int
  49 ata_national_chipinit(device_t dev)
  50 {
  51     struct ata_pci_controller *ctlr = device_get_softc(dev);
  52
  53     if (ata_setup_interrupt(dev, ata_generic_intr))
  54         return ENXIO;
  55
  56     ctlr->setmode = ata_national_setmode;
  57     return 0;
  58 }
  59
  60 static void
  61 ata_national_setmode(device_t dev, int mode)
  62 {
  63     device_t gparent = GRANDPARENT(dev);
  64     struct ata_channel *ch = device_get_softc(device_get_parent(dev));
  65     struct ata_device *atadev = device_get_softc(dev);
  66     int devno = (ch->unit << 1) + atadev->unit;
  67         static const uint32_t piotiming[] =
  68             { 0x9172d132, 0x21717121, 0x00803020, 0x20102010, 0x00100010,
  69               0x00803020, 0x20102010, 0x00100010,
  70               0x00100010, 0x00100010, 0x00100010 };
  71         static const uint32_t dmatiming[] =
  72             { 0x80077771, 0x80012121, 0x80002020 };
  73         static const uint32_t udmatiming[] =
  74             { 0x80921250, 0x80911140, 0x80911030 };
  75     int error;
  76
  77     ch->dma->alignment = 16;
  78     ch->dma->max_iosize = 64 * DEV_BSIZE;
  79
  80     mode = ata_limit_mode(dev, mode, ATA_UDMA2);
  81
  82     error = ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_SETXFER, 0, mode);
  83
  84     if (bootverbose)
  85         device_printf(dev, "%s setting %s on National chip\n",
  86                       (error) ? "failed" : "success", ata_mode2str(mode));
  87     if (!error) {
  88         if (mode >= ATA_UDMA0) {
  89             pci_write_config(gparent, 0x44 + (devno << 3),
  90                              udmatiming[mode & ATA_MODE_MASK], 4);
  91         }
  92         else if (mode >= ATA_WDMA0) {
  93             pci_write_config(gparent, 0x44 + (devno << 3),
  94                              dmatiming[mode & ATA_MODE_MASK], 4);
  95         }
  96         else {
  97             pci_write_config(gparent, 0x44 + (devno << 3),
  98                              pci_read_config(gparent, 0x44 + (devno << 3), 4) |
  99                              0x80000000, 4);
 100         }
 101         pci_write_config(gparent, 0x40 + (devno << 3),
 102                          piotiming[ata_mode2idx(mode)], 4);
 103         atadev->mode = mode;
 104     }
 105 }