freebsd-dev/sys/dev/ata/chipsets/ata-jmicron.c
Søren Schmidt 13014ca04a This is the roumored ATA modulerisation works, and it needs a little explanation.
If you just config KERNEL as usual there should be no apparent changes, you'll get all chipset support code compiled in.

However there is now a way to only compile in code for chipsets needed on a pr vendor basis. ATA now has the following "device" entries:

atacore:	ATA core functionality, always needed for any ATA setup

atacard:	CARDBUS support
atacbus:	PC98 cbus support
ataisa:		ISA bus support
atapci:		PCI bus support only generic chipset support.

ataahci:	AHCI support, also pulled in by some vendor modules.

ataacard, ataacerlabs, ataadaptec, ataamd, ataati, atacenatek, atacypress, atacyrix, atahighpoint, ataintel, ataite, atajmicron, atamarvell, atamicron, atanational, atanetcell, atanvidia, atapromise, ataserverworks, atasiliconimage, atasis, atavia;	Vendor support, ie atavia for VIA chipsets

atadisk:	ATA disk driver
ataraid:	ATA softraid driver

atapicd:	ATAPI cd/dvd driver
atapifd:	ATAPI floppy/flashdisk driver
atapist:	ATAPI tape driver

atausb:		ATA<>USB bridge
atapicam:	ATA<>CAM bridge

This makes it possible to config a kernel with just VIA chipset support by having the following ATA lines in the kernel config file:

device          atacore
device          atapci
device          atavia

And then you need the atadisk, atapicd etc lines in there just as usual.

If you use ATA as modules loaded at boot there is few changes except the rename of the "ata" module to "atacore", things looks just as usual.
However under atapci you now have a whole bunch of vendor specific drivers, that you can kldload individually depending on you needs. Drivers have the same names as used in the kernel config explained above.
2008-10-09 12:56:57 +00:00

205 lines
6.1 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_jmicron_chipinit(device_t dev);
static int ata_jmicron_allocate(device_t dev);
static void ata_jmicron_reset(device_t dev);
static void ata_jmicron_dmainit(device_t dev);
static void ata_jmicron_setmode(device_t dev, int mode);
/*
* JMicron chipset support functions
*/
static int
ata_jmicron_probe(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(dev);
struct ata_chip_id *idx;
static struct ata_chip_id ids[] =
{{ ATA_JMB360, 0, 1, 0, ATA_SA300, "JMB360" },
{ ATA_JMB361, 0, 1, 1, ATA_SA300, "JMB361" },
{ ATA_JMB363, 0, 2, 1, ATA_SA300, "JMB363" },
{ ATA_JMB365, 0, 1, 2, ATA_SA300, "JMB365" },
{ ATA_JMB366, 0, 2, 2, ATA_SA300, "JMB366" },
{ ATA_JMB368, 0, 0, 1, ATA_UDMA6, "JMB368" },
{ 0, 0, 0, 0, 0, 0}};
char buffer[64];
if (pci_get_vendor(dev) != ATA_JMICRON_ID)
return ENXIO;
if (!(idx = ata_match_chip(dev, ids)))
return ENXIO;
if ((pci_read_config(dev, 0xdf, 1) & 0x40) &&
(pci_get_function(dev) == (pci_read_config(dev, 0x40, 1) & 0x02 >> 1)))
sprintf(buffer, "JMicron %s %s controller",
idx->text, ata_mode2str(ATA_UDMA6));
else
sprintf(buffer, "JMicron %s %s controller",
idx->text, ata_mode2str(idx->max_dma));
device_set_desc_copy(dev, buffer);
ctlr->chip = idx;
ctlr->chipinit = ata_jmicron_chipinit;
return 0;
}
static int
ata_jmicron_chipinit(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(dev);
int error;
if (ata_setup_interrupt(dev, ata_generic_intr))
return ENXIO;
/* do we have multiple PCI functions ? */
if (pci_read_config(dev, 0xdf, 1) & 0x40) {
/* are we on the AHCI part ? */
if (ata_ahci_chipinit(dev) != ENXIO)
return 0;
/* otherwise we are on the PATA part */
ctlr->allocate = ata_pci_allocate;
ctlr->reset = ata_generic_reset;
ctlr->dmainit = ata_pci_dmainit;
ctlr->setmode = ata_jmicron_setmode;
ctlr->channels = ctlr->chip->cfg2;
}
else {
/* set controller configuration to a combined setup we support */
pci_write_config(dev, 0x40, 0x80c0a131, 4);
pci_write_config(dev, 0x80, 0x01200000, 4);
if (ctlr->chip->cfg1 && (error = ata_ahci_chipinit(dev)))
return error;
ctlr->allocate = ata_jmicron_allocate;
ctlr->reset = ata_jmicron_reset;
ctlr->dmainit = ata_jmicron_dmainit;
ctlr->setmode = ata_jmicron_setmode;
/* set the number of HW channels */
ctlr->channels = ctlr->chip->cfg1 + ctlr->chip->cfg2;
}
return 0;
}
static int
ata_jmicron_allocate(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
struct ata_channel *ch = device_get_softc(dev);
int error;
if (ch->unit >= ctlr->chip->cfg1) {
ch->unit -= ctlr->chip->cfg1;
error = ata_pci_allocate(dev);
ch->unit += ctlr->chip->cfg1;
}
else
error = ata_ahci_allocate(dev);
return error;
}
static void
ata_jmicron_reset(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
struct ata_channel *ch = device_get_softc(dev);
if (ch->unit >= ctlr->chip->cfg1)
ata_generic_reset(dev);
else
ata_ahci_reset(dev);
}
static void
ata_jmicron_dmainit(device_t dev)
{
struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
struct ata_channel *ch = device_get_softc(dev);
if (ch->unit >= ctlr->chip->cfg1)
ata_pci_dmainit(dev);
else
ata_ahci_dmainit(dev);
}
static void
ata_jmicron_setmode(device_t dev, int mode)
{
struct ata_pci_controller *ctlr = device_get_softc(GRANDPARENT(dev));
struct ata_channel *ch = device_get_softc(device_get_parent(dev));
if (pci_read_config(dev, 0xdf, 1) & 0x40 || ch->unit >= ctlr->chip->cfg1) {
struct ata_device *atadev = device_get_softc(dev);
/* check for 80pin cable present */
if (pci_read_config(dev, 0x40, 1) & 0x08)
mode = ata_limit_mode(dev, mode, ATA_UDMA2);
else
mode = ata_limit_mode(dev, mode, ATA_UDMA6);
if (!ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_SETXFER, 0, mode))
atadev->mode = mode;
}
else
ata_sata_setmode(dev, mode);
}
ATA_DECLARE_DRIVER(ata_jmicron);
MODULE_DEPEND(ata_jmicron, ata_ahci, 1, 1, 1);