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NetBSD/sys/dev/pci/siside.c

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/* $NetBSD: siside.c,v 1.17 2005/06/16 19:30:02 bouyer Exp $ */
/*
* Copyright (c) 1999, 2000, 2001 Manuel Bouyer.
*
* 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.
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Manuel Bouyer.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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>
__KERNEL_RCSID(0, "$NetBSD: siside.c,v 1.17 2005/06/16 19:30:02 bouyer Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/pciidereg.h>
#include <dev/pci/pciidevar.h>
#include <dev/pci/pciide_sis_reg.h>
static void sis_chip_map(struct pciide_softc *, struct pci_attach_args *);
static void sis_sata_chip_map(struct pciide_softc *, struct pci_attach_args *);
static void sis_setup_channel(struct ata_channel *);
static void sis96x_setup_channel(struct ata_channel *);
static int sis_hostbr_match(struct pci_attach_args *);
static int sis_south_match(struct pci_attach_args *);
static int siside_match(struct device *, struct cfdata *, void *);
static void siside_attach(struct device *, struct device *, void *);
CFATTACH_DECL(siside, sizeof(struct pciide_softc),
siside_match, siside_attach, NULL, NULL);
static const struct pciide_product_desc pciide_sis_products[] = {
{ PCI_PRODUCT_SIS_5597_IDE,
0,
NULL,
sis_chip_map,
},
{ PCI_PRODUCT_SIS_180_SATA,
0,
NULL,
sis_sata_chip_map,
},
{ 0,
0,
NULL,
NULL
}
};
static int
siside_match(struct device *parent, struct cfdata *match, void *aux)
{
struct pci_attach_args *pa = aux;
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SIS) {
if (pciide_lookup_product(pa->pa_id, pciide_sis_products))
return (2);
}
return (0);
}
static void
siside_attach(struct device *parent, struct device *self, void *aux)
{
struct pci_attach_args *pa = aux;
struct pciide_softc *sc = (struct pciide_softc *)self;
pciide_common_attach(sc, pa,
pciide_lookup_product(pa->pa_id, pciide_sis_products));
}
static struct sis_hostbr_type {
u_int16_t id;
u_int8_t rev;
u_int8_t udma_mode;
const char *name;
u_int8_t type;
#define SIS_TYPE_NOUDMA 0
#define SIS_TYPE_66 1
#define SIS_TYPE_100OLD 2
#define SIS_TYPE_100NEW 3
#define SIS_TYPE_133OLD 4
#define SIS_TYPE_133NEW 5
#define SIS_TYPE_SOUTH 6
} sis_hostbr_type[] = {
/* Most infos here are from sos@freebsd.org */
{PCI_PRODUCT_SIS_530HB, 0x00, 4, "530", SIS_TYPE_66},
#if 0
/*
* controllers associated to a rev 0x2 530 Host to PCI Bridge
* have problems with UDMA (info provided by Christos)
*/
{PCI_PRODUCT_SIS_530HB, 0x02, 0, "530 (buggy)", SIS_TYPE_NOUDMA},
#endif
{PCI_PRODUCT_SIS_540HB, 0x00, 4, "540", SIS_TYPE_66},
{PCI_PRODUCT_SIS_550HB, 0x00, 4, "550", SIS_TYPE_66},
{PCI_PRODUCT_SIS_620, 0x00, 4, "620", SIS_TYPE_66},
{PCI_PRODUCT_SIS_630, 0x00, 4, "630", SIS_TYPE_66},
{PCI_PRODUCT_SIS_630, 0x30, 5, "630S", SIS_TYPE_100NEW},
{PCI_PRODUCT_SIS_633, 0x00, 5, "633", SIS_TYPE_100NEW},
{PCI_PRODUCT_SIS_635, 0x00, 5, "635", SIS_TYPE_100NEW},
{PCI_PRODUCT_SIS_640, 0x00, 4, "640", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_645, 0x00, 6, "645", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_646, 0x00, 6, "645DX", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_648, 0x00, 6, "648", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_650, 0x00, 6, "650", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_651, 0x00, 6, "651", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_652, 0x00, 6, "652", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_655, 0x00, 6, "655", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_658, 0x00, 6, "658", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_730, 0x00, 5, "730", SIS_TYPE_100OLD},
{PCI_PRODUCT_SIS_733, 0x00, 5, "733", SIS_TYPE_100NEW},
{PCI_PRODUCT_SIS_735, 0x00, 5, "735", SIS_TYPE_100NEW},
{PCI_PRODUCT_SIS_740, 0x00, 5, "740", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_741, 0x00, 5, "741", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_745, 0x00, 5, "745", SIS_TYPE_100NEW},
{PCI_PRODUCT_SIS_746, 0x00, 6, "746", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_748, 0x00, 6, "748", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_750, 0x00, 6, "750", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_751, 0x00, 6, "751", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_752, 0x00, 6, "752", SIS_TYPE_SOUTH},
{PCI_PRODUCT_SIS_755, 0x00, 6, "755", SIS_TYPE_SOUTH},
/*
* From sos@freebsd.org: the 0x961 ID will never be found in real world
* {PCI_PRODUCT_SIS_961, 0x00, 6, "961", SIS_TYPE_133NEW},
*/
{PCI_PRODUCT_SIS_962, 0x00, 6, "962", SIS_TYPE_133NEW},
{PCI_PRODUCT_SIS_963, 0x00, 6, "963", SIS_TYPE_133NEW},
{PCI_PRODUCT_SIS_964, 0x00, 6, "964", SIS_TYPE_133NEW},
{PCI_PRODUCT_SIS_965, 0x00, 6, "965", SIS_TYPE_133NEW},
};
static struct sis_hostbr_type *sis_hostbr_type_match;
static int
sis_hostbr_match(struct pci_attach_args *pa)
{
int i;
pcireg_t id, reg;
if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_SIS)
return 0;
if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SIS_85C503) {
reg = pci_conf_read(pa->pa_pc, pa->pa_tag, SIS96x_DETECT);
pci_conf_write(pa->pa_pc, pa->pa_tag, SIS96x_DETECT,
reg | SIS96x_DETECT_MASQ);
id = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ID_REG);
if (((PCI_PRODUCT(id) & 0xfff0) != 0x0960)
&& (PCI_PRODUCT(id) != 0x0018)) {
pci_conf_write(pa->pa_pc, pa->pa_tag, SIS96x_DETECT,
reg);
} else {
pa->pa_id = id;
}
}
sis_hostbr_type_match = NULL;
for (i = 0;
i < sizeof(sis_hostbr_type) / sizeof(sis_hostbr_type[0]);
i++) {
if (PCI_PRODUCT(pa->pa_id) == sis_hostbr_type[i].id &&
PCI_REVISION(pa->pa_class) >= sis_hostbr_type[i].rev)
sis_hostbr_type_match = &sis_hostbr_type[i];
}
return (sis_hostbr_type_match != NULL);
}
static int
sis_south_match(struct pci_attach_args *pa)
{
return (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SIS &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SIS_85C503 &&
PCI_REVISION(pa->pa_class) >= 0x10);
}
static void
sis_chip_map(struct pciide_softc *sc, struct pci_attach_args *pa)
{
struct pciide_channel *cp;
int channel;
u_int8_t sis_ctr0 = pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_CTRL0);
pcireg_t interface = PCI_INTERFACE(pa->pa_class);
pcireg_t rev = PCI_REVISION(pa->pa_class);
bus_size_t cmdsize, ctlsize;
if (pciide_chipen(sc, pa) == 0)
return;
aprint_normal("%s: Silicon Integrated Systems ",
sc->sc_wdcdev.sc_atac.atac_dev.dv_xname);
pci_find_device(NULL, sis_hostbr_match);
if (sis_hostbr_type_match) {
if (sis_hostbr_type_match->type == SIS_TYPE_SOUTH) {
pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_57,
pciide_pci_read(sc->sc_pc, sc->sc_tag,
SIS_REG_57) & 0x7f);
if (PCI_PRODUCT(pci_conf_read(sc->sc_pc, sc->sc_tag,
PCI_ID_REG)) == SIS_PRODUCT_5518) {
aprint_normal("96X UDMA%d",
sis_hostbr_type_match->udma_mode);
sc->sis_type = SIS_TYPE_133NEW;
sc->sc_wdcdev.sc_atac.atac_udma_cap =
sis_hostbr_type_match->udma_mode;
} else {
if (pci_find_device(NULL, sis_south_match)) {
sc->sis_type = SIS_TYPE_133OLD;
sc->sc_wdcdev.sc_atac.atac_udma_cap =
sis_hostbr_type_match->udma_mode;
} else {
sc->sis_type = SIS_TYPE_100NEW;
sc->sc_wdcdev.sc_atac.atac_udma_cap =
sis_hostbr_type_match->udma_mode;
}
}
} else {
sc->sis_type = sis_hostbr_type_match->type;
sc->sc_wdcdev.sc_atac.atac_udma_cap =
sis_hostbr_type_match->udma_mode;
}
aprint_normal(sis_hostbr_type_match->name);
} else {
aprint_normal("5597/5598");
if (rev >= 0xd0) {
sc->sc_wdcdev.sc_atac.atac_udma_cap = 2;
sc->sis_type = SIS_TYPE_66;
} else {
sc->sc_wdcdev.sc_atac.atac_udma_cap = 0;
sc->sis_type = SIS_TYPE_NOUDMA;
}
}
aprint_normal(" IDE controller (rev. 0x%02x)\n",
PCI_REVISION(pa->pa_class));
aprint_normal("%s: bus-master DMA support present",
sc->sc_wdcdev.sc_atac.atac_dev.dv_xname);
pciide_mapreg_dma(sc, pa);
aprint_normal("\n");
sc->sc_wdcdev.sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
if (sc->sc_dma_ok) {
sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DMA;
sc->sc_wdcdev.irqack = pciide_irqack;
if (sc->sis_type >= SIS_TYPE_66)
sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA;
}
sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS;
switch(sc->sis_type) {
case SIS_TYPE_NOUDMA:
case SIS_TYPE_66:
case SIS_TYPE_100OLD:
sc->sc_wdcdev.sc_atac.atac_set_modes = sis_setup_channel;
pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_MISC,
pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_MISC) |
SIS_MISC_TIM_SEL | SIS_MISC_FIFO_SIZE | SIS_MISC_GTC);
break;
case SIS_TYPE_100NEW:
case SIS_TYPE_133OLD:
sc->sc_wdcdev.sc_atac.atac_set_modes = sis_setup_channel;
pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_49,
pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_49) | 0x01);
break;
case SIS_TYPE_133NEW:
sc->sc_wdcdev.sc_atac.atac_set_modes = sis96x_setup_channel;
pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_50,
pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_50) & 0xf7);
pciide_pci_write(sc->sc_pc, sc->sc_tag, SIS_REG_52,
pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_52) & 0xf7);
break;
}
wdc_allocate_regs(&sc->sc_wdcdev);
for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
channel++) {
cp = &sc->pciide_channels[channel];
if (pciide_chansetup(sc, channel, interface) == 0)
continue;
if ((channel == 0 && (sis_ctr0 & SIS_CTRL0_CHAN0_EN) == 0) ||
(channel == 1 && (sis_ctr0 & SIS_CTRL0_CHAN1_EN) == 0)) {
aprint_normal("%s: %s channel ignored (disabled)\n",
sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, cp->name);
cp->ata_channel.ch_flags |= ATACH_DISABLED;
continue;
}
pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
pciide_pci_intr);
}
}
static void
sis96x_setup_channel(struct ata_channel *chp)
{
struct ata_drive_datas *drvp;
int drive, s;
u_int32_t sis_tim;
u_int32_t idedma_ctl;
int regtim;
struct pciide_channel *cp = CHAN_TO_PCHAN(chp);
struct pciide_softc *sc = CHAN_TO_PCIIDE(chp);
sis_tim = 0;
idedma_ctl = 0;
/* setup DMA if needed */
pciide_channel_dma_setup(cp);
for (drive = 0; drive < 2; drive++) {
regtim = SIS_TIM133(
pciide_pci_read(sc->sc_pc, sc->sc_tag, SIS_REG_57),
chp->ch_channel, drive);
drvp = &chp->ch_drive[drive];
/* If no drive, skip */
if ((drvp->drive_flags & DRIVE) == 0)
continue;
/* add timing values, setup DMA if needed */
if (drvp->drive_flags & DRIVE_UDMA) {
/* use Ultra/DMA */
s = splbio();
drvp->drive_flags &= ~DRIVE_DMA;
splx(s);
if (pciide_pci_read(sc->sc_pc, sc->sc_tag,
SIS96x_REG_CBL(chp->ch_channel)) & SIS96x_REG_CBL_33) {
if (drvp->UDMA_mode > 2)
drvp->UDMA_mode = 2;
}
sis_tim |= sis_udma133new_tim[drvp->UDMA_mode];
sis_tim |= sis_pio133new_tim[drvp->PIO_mode];
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
} else if (drvp->drive_flags & DRIVE_DMA) {
/*
* use Multiword DMA
* Timings will be used for both PIO and DMA,
* so adjust DMA mode if needed
*/
if (drvp->PIO_mode > (drvp->DMA_mode + 2))
drvp->PIO_mode = drvp->DMA_mode + 2;
if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
drvp->DMA_mode = (drvp->PIO_mode > 2) ?
drvp->PIO_mode - 2 : 0;
sis_tim |= sis_dma133new_tim[drvp->DMA_mode];
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
} else {
sis_tim |= sis_pio133new_tim[drvp->PIO_mode];
}
ATADEBUG_PRINT(("sis96x_setup_channel: new timings reg for "
"channel %d drive %d: 0x%x (reg 0x%x)\n",
chp->ch_channel, drive, sis_tim, regtim), DEBUG_PROBE);
pci_conf_write(sc->sc_pc, sc->sc_tag, regtim, sis_tim);
}
if (idedma_ctl != 0) {
/* Add software bits in status register */
bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0,
idedma_ctl);
}
}
static void
sis_setup_channel(struct ata_channel *chp)
{
struct ata_drive_datas *drvp;
int drive, s;
u_int32_t sis_tim;
u_int32_t idedma_ctl;
struct pciide_channel *cp = CHAN_TO_PCHAN(chp);
struct pciide_softc *sc = CHAN_TO_PCIIDE(chp);
ATADEBUG_PRINT(("sis_setup_channel: old timings reg for "
"channel %d 0x%x\n", chp->ch_channel,
pci_conf_read(sc->sc_pc, sc->sc_tag, SIS_TIM(chp->ch_channel))),
DEBUG_PROBE);
sis_tim = 0;
idedma_ctl = 0;
/* setup DMA if needed */
pciide_channel_dma_setup(cp);
for (drive = 0; drive < 2; drive++) {
drvp = &chp->ch_drive[drive];
/* If no drive, skip */
if ((drvp->drive_flags & DRIVE) == 0)
continue;
/* add timing values, setup DMA if needed */
if ((drvp->drive_flags & DRIVE_DMA) == 0 &&
(drvp->drive_flags & DRIVE_UDMA) == 0)
goto pio;
if (drvp->drive_flags & DRIVE_UDMA) {
/* use Ultra/DMA */
s = splbio();
drvp->drive_flags &= ~DRIVE_DMA;
splx(s);
if (pciide_pci_read(sc->sc_pc, sc->sc_tag,
SIS_REG_CBL) & SIS_REG_CBL_33(chp->ch_channel)) {
if (drvp->UDMA_mode > 2)
drvp->UDMA_mode = 2;
}
switch (sc->sis_type) {
case SIS_TYPE_66:
case SIS_TYPE_100OLD:
sis_tim |= sis_udma66_tim[drvp->UDMA_mode] <<
SIS_TIM66_UDMA_TIME_OFF(drive);
break;
case SIS_TYPE_100NEW:
sis_tim |=
sis_udma100new_tim[drvp->UDMA_mode] <<
SIS_TIM100_UDMA_TIME_OFF(drive);
case SIS_TYPE_133OLD:
sis_tim |=
sis_udma133old_tim[drvp->UDMA_mode] <<
SIS_TIM100_UDMA_TIME_OFF(drive);
break;
default:
aprint_error("unknown SiS IDE type %d\n",
sc->sis_type);
}
} else {
/*
* use Multiword DMA
* Timings will be used for both PIO and DMA,
* so adjust DMA mode if needed
*/
if (drvp->PIO_mode > (drvp->DMA_mode + 2))
drvp->PIO_mode = drvp->DMA_mode + 2;
if (drvp->DMA_mode + 2 > (drvp->PIO_mode))
drvp->DMA_mode = (drvp->PIO_mode > 2) ?
drvp->PIO_mode - 2 : 0;
if (drvp->DMA_mode == 0)
drvp->PIO_mode = 0;
}
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
pio: switch (sc->sis_type) {
case SIS_TYPE_NOUDMA:
case SIS_TYPE_66:
case SIS_TYPE_100OLD:
sis_tim |= sis_pio_act[drvp->PIO_mode] <<
SIS_TIM66_ACT_OFF(drive);
sis_tim |= sis_pio_rec[drvp->PIO_mode] <<
SIS_TIM66_REC_OFF(drive);
break;
case SIS_TYPE_100NEW:
case SIS_TYPE_133OLD:
sis_tim |= sis_pio_act[drvp->PIO_mode] <<
SIS_TIM100_ACT_OFF(drive);
sis_tim |= sis_pio_rec[drvp->PIO_mode] <<
SIS_TIM100_REC_OFF(drive);
break;
default:
aprint_error("unknown SiS IDE type %d\n",
sc->sis_type);
}
}
ATADEBUG_PRINT(("sis_setup_channel: new timings reg for "
"channel %d 0x%x\n", chp->ch_channel, sis_tim), DEBUG_PROBE);
pci_conf_write(sc->sc_pc, sc->sc_tag, SIS_TIM(chp->ch_channel),
sis_tim);
if (idedma_ctl != 0) {
/* Add software bits in status register */
bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0,
idedma_ctl);
}
}
static void
sis_sata_chip_map(struct pciide_softc *sc, struct pci_attach_args *pa)
{
struct pciide_channel *cp;
pcireg_t interface = PCI_INTERFACE(pa->pa_class);
int channel;
bus_size_t cmdsize, ctlsize;
if (pciide_chipen(sc, pa) == 0)
return;
if (interface == 0) {
ATADEBUG_PRINT(("sis_sata_chip_map interface == 0\n"),
DEBUG_PROBE);
interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
}
aprint_normal("%s: Silicon Integrated Systems 180/96X SATA controller (rev. 0x%02x)\n",
sc->sc_wdcdev.sc_atac.atac_dev.dv_xname,
PCI_REVISION(pa->pa_class));
aprint_normal("%s: bus-master DMA support present",
sc->sc_wdcdev.sc_atac.atac_dev.dv_xname);
pciide_mapreg_dma(sc, pa);
aprint_normal("\n");
if (sc->sc_dma_ok) {
sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_UDMA | ATAC_CAP_DMA;
sc->sc_wdcdev.irqack = pciide_irqack;
}
sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
sc->sc_wdcdev.sc_atac.atac_nchannels = PCIIDE_NUM_CHANNELS;
sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16 | ATAC_CAP_DATA32;
sc->sc_wdcdev.sc_atac.atac_set_modes = sata_setup_channel;
wdc_allocate_regs(&sc->sc_wdcdev);
for (channel = 0; channel < sc->sc_wdcdev.sc_atac.atac_nchannels;
channel++) {
cp = &sc->pciide_channels[channel];
if (pciide_chansetup(sc, channel, interface) == 0)
continue;
pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
pciide_pci_intr);
}
}
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