freebsd-dev/sys/dev/ata/chipsets/ata-ati.c
Alexander Motin 71e7360ed9 MFC r200171, r200182, r200275, r200295, r200359:
Introduce ATA_CAM kernel option, turning ata(4) controller drivers into
cam(4) interface modules. When enabled, this option deprecates all ata(4)
peripheral drivers (ad, acd, ...) and interfaces and allows cam(4) drivers
(ada, cd, ...) and interfaces to be natively used instead.

As side effect of this, ata(4) mode setting code was completely rewritten
to make controller API more strict and permit above change. While doing
this, SATA revision was separated from PATA mode. It allows DMA-incapable
SATA devices to operate and makes hw.ata.(ata|atapi)_dma tunable work again.

Also allow ata(4) controller drivers (except some specific or broken ones)
to handle larger data transfers. Previous constraint of 64K was artificial
and is not really required by PCI ATA BM specification or hardware.

Submitted by:   nwitehorn (powerpc part)
2009-12-12 10:37:31 +00:00

223 lines
7.3 KiB
C

/*-
* 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_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;
int 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");
/*
* 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));
}
break;
}
ctlr->setmode = ata_ati_setmode;
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);