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

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/*-
* 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 "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 int ata_ati_ixp700_ch_attach(device_t dev);
static int ata_ati_setmode(device_t dev, int target, 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, "IXP700/800" },
{ ATA_ATI_IXP700_S1, 0x00, ATI_AHCI, 0, ATA_SA300, "IXP700/800" },
{ ATA_ATI_IXP700_S2, 0x00, ATI_AHCI, 0, ATA_SA300, "IXP700/800" },
{ ATA_ATI_IXP700_S3, 0x00, ATI_AHCI, 0, ATA_SA300, "IXP700/800" },
{ ATA_ATI_IXP700_S4, 0x00, ATI_AHCI, 0, ATA_SA300, "IXP700/800" },
{ ATA_ATI_IXP800_S1, 0x00, ATI_AHCI, 0, ATA_SA300, "IXP800" },
{ ATA_ATI_IXP800_S2, 0x00, ATI_AHCI, 0, ATA_SA300, "IXP800" },
{ 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 (BUS_PROBE_DEFAULT);
}
static int
ata_ati_chipinit(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(dev);
device_t smbdev;
uint8_t satacfg;
if (ata_setup_interrupt(dev, ata_generic_intr))
return ENXIO;
switch (ctlr->chip->chipid) {
case ATA_ATI_IXP600:
/* IXP600 only has 1 PATA channel */
ctlr->channels = 1;
break;
case ATA_ATI_IXP700:
/*
* When "combined mode" is enabled, an additional PATA channel is
* emulated with two SATA ports and appears on this device.
* This mode can only be detected via SMB controller.
*/
smbdev = pci_find_device(ATA_ATI_ID, 0x4385);
if (smbdev != NULL) {
satacfg = pci_read_config(smbdev, 0xad, 1);
if (bootverbose)
device_printf(dev, "SATA controller %s (%s%s channel)\n",
(satacfg & 0x01) == 0 ? "disabled" : "enabled",
(satacfg & 0x08) == 0 ? "" : "combined mode, ",
(satacfg & 0x10) == 0 ? "primary" : "secondary");
ctlr->chipset_data = (void *)(uintptr_t)satacfg;
/*
* If SATA controller is enabled but combined mode is disabled,
* we have only one PATA channel. Ignore a non-existent channel.
*/
if ((satacfg & 0x09) == 0x01)
ctlr->ichannels &= ~(1 << ((satacfg & 0x10) >> 4));
else {
ctlr->ch_attach = ata_ati_ixp700_ch_attach;
}
}
break;
}
ctlr->setmode = ata_ati_setmode;
return 0;
}
static int
ata_ati_ixp700_ch_attach(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
struct ata_channel *ch = device_get_softc(dev);
uint8_t satacfg = (uint8_t)(uintptr_t)ctlr->chipset_data;
/* Setup the usual register normal pci style. */
if (ata_pci_ch_attach(dev))
return ENXIO;
/* One of channels is PATA, another is SATA. */
if (ch->unit == ((satacfg & 0x10) >> 4))
ch->flags |= ATA_SATA;
return (0);
}
static int
ata_ati_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;
int offset = (devno ^ 0x01) << 3;
int piomode;
u_int8_t piotimings[] = { 0x5d, 0x47, 0x34, 0x22, 0x20 };
u_int8_t dmatimings[] = { 0x77, 0x21, 0x20 };
mode = min(mode, ctlr->chip->max_dma);
if (mode >= ATA_UDMA0) {
/* Set UDMA mode, enable UDMA, set WDMA2/PIO4 */
pci_write_config(parent, 0x56,
(pci_read_config(parent, 0x56, 2) &
~(0xf << (devno << 2))) |
((mode & ATA_MODE_MASK) << (devno << 2)), 2);
pci_write_config(parent, 0x54,
pci_read_config(parent, 0x54, 1) |
(0x01 << devno), 1);
pci_write_config(parent, 0x44,
(pci_read_config(parent, 0x44, 4) &
~(0xff << offset)) |
(dmatimings[2] << offset), 4);
piomode = ATA_PIO4;
} else if (mode >= ATA_WDMA0) {
/* Disable UDMA, set WDMA mode and timings, calculate PIO. */
pci_write_config(parent, 0x54,
pci_read_config(parent, 0x54, 1) &
~(0x01 << devno), 1);
pci_write_config(parent, 0x44,
(pci_read_config(parent, 0x44, 4) &
~(0xff << offset)) |
(dmatimings[mode & ATA_MODE_MASK] << offset), 4);
piomode = (mode == ATA_WDMA0) ? ATA_PIO0 :
(mode == ATA_WDMA1) ? ATA_PIO3 : ATA_PIO4;
} else {
/* Disable UDMA, set requested PIO. */
pci_write_config(parent, 0x54,
pci_read_config(parent, 0x54, 1) &
~(0x01 << devno), 1);
piomode = mode;
}
/* Set PIO mode and timings, calculated above. */
pci_write_config(parent, 0x4a,
(pci_read_config(parent, 0x4a, 2) &
~(0xf << (devno << 2))) |
((piomode - ATA_PIO0) << (devno<<2)),2);
pci_write_config(parent, 0x40,
(pci_read_config(parent, 0x40, 4) &
~(0xff << offset)) |
(piotimings[ata_mode2idx(piomode)] << offset), 4);
return (mode);
}
ATA_DECLARE_DRIVER(ata_ati);
MODULE_DEPEND(ata_ati, ata_ahci, 1, 1, 1);
MODULE_DEPEND(ata_ati, ata_sii, 1, 1, 1);
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