freebsd-nq/sys/dev/ata/chipsets/ata-ati.c

/*-
 * Copyright (c) 1998 - 2008 S<EFBFBD>ren 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 "opt_ata.h"
#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_ati_chipinit(device_t dev);
static void ata_ati_setmode(device_t dev, int mode);

/* misc defines */
#define ATI_PATA	0x01
#define ATI_SATA	0x02
#define ATI_AHCI	0x04
#define SII_MEMIO       1
#define SII_BUG         0x04


/*
 * ATI chipset support functions
 */
static int
ata_ati_probe(device_t dev)
{
    struct ata_pci_controller *ctlr = device_get_softc(dev);
    static struct ata_chip_id ids[] =
    {{ ATA_ATI_IXP200,    0x00, ATI_PATA, 0, ATA_UDMA5, "IXP200" },
     { ATA_ATI_IXP300,    0x00, ATI_PATA, 0, ATA_UDMA6, "IXP300" },
     { ATA_ATI_IXP300_S1, 0x00, ATI_SATA, 0, ATA_SA150, "IXP300" },
     { ATA_ATI_IXP400,    0x00, ATI_PATA, 0, ATA_UDMA6, "IXP400" },
     { ATA_ATI_IXP400_S1, 0x00, ATI_SATA, 0, ATA_SA150, "IXP400" },
     { ATA_ATI_IXP400_S2, 0x00, ATI_SATA, 0, ATA_SA150, "IXP400" },
     { ATA_ATI_IXP600,    0x00, ATI_PATA, 0, ATA_UDMA6, "IXP600" },
     { ATA_ATI_IXP600_S1, 0x00, ATI_AHCI, 0, ATA_SA300, "IXP600" },
     { ATA_ATI_IXP700,    0x00, ATI_PATA, 0, ATA_UDMA6, "IXP700" },
     { ATA_ATI_IXP700_S1, 0x00, ATI_AHCI, 0, ATA_SA300, "IXP700" },
     { 0, 0, 0, 0, 0, 0}};

    if (pci_get_vendor(dev) != ATA_ATI_ID)
	return ENXIO;

    if (!(ctlr->chip = ata_match_chip(dev, ids)))
	return ENXIO;

    ata_set_desc(dev);

    switch (ctlr->chip->cfg1) {
    case ATI_PATA:
	ctlr->chipinit = ata_ati_chipinit;
	break;
    case ATI_SATA:
	/*
	 * the ATI SATA controller is actually a SiI 3112 controller
	 * cfg values below much match those in ata-siliconimage.c
	 */
	ctlr->chip->cfg1 = SII_MEMIO;
	ctlr->chip->cfg2 = SII_BUG;
	ctlr->chipinit = ata_sii_chipinit;
	break;
    case ATI_AHCI:
	ctlr->chipinit = ata_ahci_chipinit;
	break;
    }
    return 0;
}

static int
ata_ati_chipinit(device_t dev)
{
    struct ata_pci_controller *ctlr = device_get_softc(dev);

    if (ata_setup_interrupt(dev, ata_generic_intr))
	return ENXIO;

    /* IXP600 & IXP700 only have 1 PATA channel */
    if ((ctlr->chip->chipid == ATA_ATI_IXP600) ||
	(ctlr->chip->chipid == ATA_ATI_IXP700))
	ctlr->channels = 1;

    ctlr->setmode = ata_ati_setmode;
    return 0;
}

static void
ata_ati_setmode(device_t dev, int mode)
{
    device_t gparent = GRANDPARENT(dev);
    struct ata_pci_controller *ctlr = device_get_softc(gparent);
    struct ata_channel *ch = device_get_softc(device_get_parent(dev));
    struct ata_device *atadev = device_get_softc(dev);
    int devno = (ch->unit << 1) + atadev->unit;
    int offset = (devno ^ 0x01) << 3;
    int error;
    u_int8_t piotimings[] = { 0x5d, 0x47, 0x34, 0x22, 0x20, 0x34, 0x22, 0x20,
			      0x20, 0x20, 0x20, 0x20, 0x20, 0x20 };
    u_int8_t dmatimings[] = { 0x77, 0x21, 0x20 };

    mode = ata_limit_mode(dev, mode, ctlr->chip->max_dma);

    mode = ata_check_80pin(dev, mode);

    error = ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_SETXFER, 0, mode);

    if (bootverbose)
	device_printf(dev, "%ssetting %s on %s chip\n",
		      (error) ? "FAILURE " : "",
		      ata_mode2str(mode), ctlr->chip->text);
    if (!error) {
	if (mode >= ATA_UDMA0) {
	    pci_write_config(gparent, 0x56, 
			     (pci_read_config(gparent, 0x56, 2) &
			      ~(0xf << (devno << 2))) |
			     ((mode & ATA_MODE_MASK) << (devno << 2)), 2);
	    pci_write_config(gparent, 0x54,
			     pci_read_config(gparent, 0x54, 1) |
			     (0x01 << devno), 1);
	    pci_write_config(gparent, 0x44, 
			     (pci_read_config(gparent, 0x44, 4) &
			      ~(0xff << offset)) |
			     (dmatimings[2] << offset), 4);
	}
	else if (mode >= ATA_WDMA0) {
	    pci_write_config(gparent, 0x54,
			     pci_read_config(gparent, 0x54, 1) &
			      ~(0x01 << devno), 1);
	    pci_write_config(gparent, 0x44, 
			     (pci_read_config(gparent, 0x44, 4) &
			      ~(0xff << offset)) |
			     (dmatimings[mode & ATA_MODE_MASK] << offset), 4);
	}
	else
	    pci_write_config(gparent, 0x54,
			     pci_read_config(gparent, 0x54, 1) &
			     ~(0x01 << devno), 1);

	pci_write_config(gparent, 0x4a,
			 (pci_read_config(gparent, 0x4a, 2) &
			  ~(0xf << (devno << 2))) |
			 (((mode - ATA_PIO0) & ATA_MODE_MASK) << (devno<<2)),2);
	pci_write_config(gparent, 0x40, 
			 (pci_read_config(gparent, 0x40, 4) &
			  ~(0xff << offset)) |
			 (piotimings[ata_mode2idx(mode)] << offset), 4);
	atadev->mode = mode;
    }
}

ATA_DECLARE_DRIVER(ata_ati);
MODULE_DEPEND(ata_ati, ata_ahci, 1, 1, 1);
MODULE_DEPEND(ata_ati, ata_sii, 1, 1, 1);