linux-imx

/*

 * Copyright (C) 1999-2000  Andre Hedrick <andre@linux-ide.org>

 * Copyright (C) 2002       Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer

 * Copyright (C) 2003       Vojtech Pavlik <vojtech@suse.cz>

 * Copyright (C) 2007-2009  Bartlomiej Zolnierkiewicz

 *

 * May be copied or modified under the terms of the GNU General Public License

 *

 *

 * Thanks :

 *

 * SiS Taiwan       : for direct support and hardware.

 * Daniela Engert   : for initial ATA100 advices and numerous others.

 * John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt    :

 *            for checking code correctness, providing patches.

 *

 *

 * Original tests and design on the SiS620 chipset.

 * ATA100 tests and design on the SiS735 chipset.

 * ATA16/33 support from specs

 * ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw>

 * ATA133 961/962/963 fixes by Vojtech Pavlik <vojtech@suse.cz>

 *

 * Documentation:

 *  SiS chipset documentation available under NDA to companies only

 *      (not to individuals).

 */

​

/*

 * The original SiS5513 comes from a SiS5511/55112/5513 chipset. The original

 * SiS5513 was also used in the SiS5596/5513 chipset. Thus if we see a SiS5511

 * or SiS5596, we can assume we see the first MWDMA-16 capable SiS5513 chip.

 *

 * Later SiS chipsets integrated the 5513 functionality into the NorthBridge,

 * starting with SiS5571 and up to SiS745. The PCI ID didn't change, though. We

 * can figure out that we have a more modern and more capable 5513 by looking

 * for the respective NorthBridge IDs.

 *

 * Even later (96x family) SiS chipsets use the MuTIOL link and place the 5513

 * into the SouthBrige. Here we cannot rely on looking up the NorthBridge PCI

 * ID, while the now ATA-133 capable 5513 still has the same PCI ID.

 * Fortunately the 5513 can be 'unmasked' by fiddling with some config space

 * bits, changing its device id to the true one - 5517 for 961 and 5518 for

 * 962/963.

 */

​

#include <linux/types.h>

#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/pci.h>

#include <linux/init.h>

#include <linux/ide.h>

​

#define DRV_NAME "sis5513"

​

/* registers layout and init values are chipset family dependent */

#undef ATA_16

#define ATA_16      0x01

#define ATA_33      0x02

#define ATA_66      0x03

#define ATA_100a    0x04 /* SiS730/SiS550 is ATA100 with ATA66 layout */

#define ATA_100     0x05

#define ATA_133a    0x06 /* SiS961b with 133 support */

#define ATA_133     0x07 /* SiS962/963 */

​

static u8 chipset_family;

​

/*

 * Devices supported

 */

static const struct {

    const char *name;

    u16 host_id;

    u8 chipset_family;

    u8 flags;

} SiSHostChipInfo[] = {

    { "SiS968", PCI_DEVICE_ID_SI_968,   ATA_133  },

    { "SiS966", PCI_DEVICE_ID_SI_966,   ATA_133  },

    { "SiS965", PCI_DEVICE_ID_SI_965,   ATA_133  },

    { "SiS745", PCI_DEVICE_ID_SI_745,   ATA_100  },

    { "SiS735", PCI_DEVICE_ID_SI_735,   ATA_100  },

    { "SiS733", PCI_DEVICE_ID_SI_733,   ATA_100  },

    { "SiS635", PCI_DEVICE_ID_SI_635,   ATA_100  },

    { "SiS633", PCI_DEVICE_ID_SI_633,   ATA_100  },

​

    { "SiS730", PCI_DEVICE_ID_SI_730,   ATA_100a },

    { "SiS550", PCI_DEVICE_ID_SI_550,   ATA_100a },

​

    { "SiS640", PCI_DEVICE_ID_SI_640,   ATA_66   },

    { "SiS630", PCI_DEVICE_ID_SI_630,   ATA_66   },

    { "SiS620", PCI_DEVICE_ID_SI_620,   ATA_66   },

    { "SiS540", PCI_DEVICE_ID_SI_540,   ATA_66   },