/* $NetBSD: acardide.c,v 1.32 2017/10/07 16:05:33 jdolecek Exp $ */

/* $NetBSD: acardide.c,v 1.32 2017/10/07 16:05:33 jdolecek Exp $ */

/*-
* Copyright (c) 2001 Izumi Tsutsui. 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.
* 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>
__KERNEL_RCSID(0, "$NetBSD: acardide.c,v 1.32 2017/10/07 16:05:33 jdolecek 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_acard_reg.h>

static void acard_chip_map(struct pciide_softc*, const struct pci_attach_args*);
static void acard_setup_channel(struct ata_channel*);
#if 0 /* XXX !! */
static int acard_pci_intr(void *);
#endif

static int acardide_match(device_t, cfdata_t, void *);
static void acardide_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(acardide, sizeof(struct pciide_softc),
acardide_match, acardide_attach, pciide_detach, NULL);

static const struct pciide_product_desc pciide_acard_products[] = {
{ PCI_PRODUCT_ACARD_ATP850U,
0,
"Acard ATP850U Ultra33 IDE Controller",
acard_chip_map,
},
{ PCI_PRODUCT_ACARD_ATP860,
0,
"Acard ATP860 Ultra66 IDE Controller",
acard_chip_map,
},
{ PCI_PRODUCT_ACARD_ATP860A,
0,
"Acard ATP860-A Ultra66 IDE Controller",
acard_chip_map,
},
{ PCI_PRODUCT_ACARD_ATP865,
0,
"Acard ATP865 Ultra133 IDE Controller",
acard_chip_map,
},
{ PCI_PRODUCT_ACARD_ATP865A,
0,
"Acard ATP865-A Ultra133 IDE Controller",
acard_chip_map,
},
{ 0,
0,
NULL,
NULL
}
};

static int
acardide_match(device_t parent, cfdata_t match, void *aux)
{
struct pci_attach_args *pa = aux;

if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ACARD) {
if (pciide_lookup_product(pa->pa_id, pciide_acard_products))
return (2);
}
return (0);
}

static void
acardide_attach(device_t parent, device_t self, void *aux)
{
struct pci_attach_args *pa = aux;
struct pciide_softc *sc = device_private(self);

sc->sc_wdcdev.sc_atac.atac_dev = self;

pciide_common_attach(sc, pa,
pciide_lookup_product(pa->pa_id, pciide_acard_products));

}

#define ACARD_IS_850(sc) \
((sc)->sc_pp->ide_product == PCI_PRODUCT_ACARD_ATP850U)

static void
acard_chip_map(struct pciide_softc *sc, const struct pci_attach_args *pa)
{
struct pciide_channel *cp;
int i;
pcireg_t interface;

if (pciide_chipen(sc, pa) == 0)
return;

/*
* when the chip is in native mode it identifies itself as a
* 'misc mass storage'. Fake interface in this case.
*/
if (PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
interface = PCI_INTERFACE(pa->pa_class);
} else {
interface = PCIIDE_INTERFACE_BUS_MASTER_DMA |
PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
}

aprint_verbose_dev(sc->sc_wdcdev.sc_atac.atac_dev,
"bus-master DMA support present");
pciide_mapreg_dma(sc, pa);
aprint_verbose("\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 | ATAC_CAP_UDMA;
sc->sc_wdcdev.irqack = pciide_irqack;
}
sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
switch (sc->sc_pp->ide_product) {
case PCI_PRODUCT_ACARD_ATP860:
case PCI_PRODUCT_ACARD_ATP860A:
sc->sc_wdcdev.sc_atac.atac_udma_cap = 4;
break;
case PCI_PRODUCT_ACARD_ATP865:
case PCI_PRODUCT_ACARD_ATP865A:
sc->sc_wdcdev.sc_atac.atac_udma_cap = 6;
break;
default:
sc->sc_wdcdev.sc_atac.atac_udma_cap = 2;
break;
}

sc->sc_wdcdev.sc_atac.atac_set_modes = acard_setup_channel;
sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
sc->sc_wdcdev.sc_atac.atac_nchannels = 2;
sc->sc_wdcdev.wdc_maxdrives = 2;

wdc_allocate_regs(&sc->sc_wdcdev);

for (i = 0; i < sc->sc_wdcdev.sc_atac.atac_nchannels; i++) {
cp = &sc->pciide_channels[i];
if (pciide_chansetup(sc, i, interface) == 0)
continue;
pciide_mapchan(pa, cp, interface, pciide_pci_intr);
}
if (!ACARD_IS_850(sc)) {
u_int32_t reg;
reg = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL);
reg &= ~ATP860_CTRL_INT;
pci_conf_write(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL, reg);
}
}

static void
acard_setup_channel(struct ata_channel *chp)
{
struct ata_drive_datas *drvp;
struct atac_softc *atac = chp->ch_atac;
struct pciide_channel *cp = CHAN_TO_PCHAN(chp);
struct pciide_softc *sc = CHAN_TO_PCIIDE(chp);
int channel = chp->ch_channel;
int drive, s;
u_int32_t idetime, udma_mode;
u_int32_t idedma_ctl;

/* setup DMA if needed */
pciide_channel_dma_setup(cp);

if (ACARD_IS_850(sc)) {
idetime = 0;
udma_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP850_UDMA);
udma_mode &= ~ATP850_UDMA_MASK(channel);
} else {
idetime = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP860_IDETIME);
idetime &= ~ATP860_SETTIME_MASK(channel);
udma_mode = pci_conf_read(sc->sc_pc, sc->sc_tag, ATP860_UDMA);
udma_mode &= ~ATP860_UDMA_MASK(channel);

/* check 80 pins cable */
if ((chp->ch_drive[0].drive_flags & ATA_DRIVE_UDMA) ||
(chp->ch_drive[1].drive_flags & ATA_DRIVE_UDMA)) {
if (pci_conf_read(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL)
& ATP860_CTRL_80P(chp->ch_channel)) {
if (chp->ch_drive[0].UDMA_mode > 2)
chp->ch_drive[0].UDMA_mode = 2;
if (chp->ch_drive[1].UDMA_mode > 2)
chp->ch_drive[1].UDMA_mode = 2;
}
}
}

idedma_ctl = 0;

/* Per drive settings */
for (drive = 0; drive < 2; drive++) {
drvp = &chp->ch_drive[drive];
/* If no drive, skip */
if (drvp->drive_type == ATA_DRIVET_NONE)
continue;
/* add timing values, setup DMA if needed */
if ((atac->atac_cap & ATAC_CAP_UDMA) &&
(drvp->drive_flags & ATA_DRIVE_UDMA)) {
/* use Ultra/DMA */
if (ACARD_IS_850(sc)) {
idetime |= ATP850_SETTIME(drive,
acard_act_udma[drvp->UDMA_mode],
acard_rec_udma[drvp->UDMA_mode]);
udma_mode |= ATP850_UDMA_MODE(channel, drive,
acard_udma_conf[drvp->UDMA_mode]);
} else {
idetime |= ATP860_SETTIME(channel, drive,
acard_act_udma[drvp->UDMA_mode],
acard_rec_udma[drvp->UDMA_mode]);
udma_mode |= ATP860_UDMA_MODE(channel, drive,
acard_udma_conf[drvp->UDMA_mode]);
}
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
} else if ((atac->atac_cap & ATAC_CAP_DMA) &&
(drvp->drive_flags & ATA_DRIVE_DMA)) {
/* use Multiword DMA */
s = splbio();
drvp->drive_flags &= ~ATA_DRIVE_UDMA;
splx(s);
if (ACARD_IS_850(sc)) {
idetime |= ATP850_SETTIME(drive,
acard_act_dma[drvp->DMA_mode],
acard_rec_dma[drvp->DMA_mode]);
} else {
idetime |= ATP860_SETTIME(channel, drive,
acard_act_dma[drvp->DMA_mode],
acard_rec_dma[drvp->DMA_mode]);
}
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
} else {
/* PIO only */
s = splbio();
drvp->drive_flags &= ~(ATA_DRIVE_UDMA | ATA_DRIVE_DMA);
splx(s);
if (ACARD_IS_850(sc)) {
idetime |= ATP850_SETTIME(drive,
acard_act_pio[drvp->PIO_mode],
acard_rec_pio[drvp->PIO_mode]);
} else {
idetime |= ATP860_SETTIME(channel, drive,
acard_act_pio[drvp->PIO_mode],
acard_rec_pio[drvp->PIO_mode]);
}
pci_conf_write(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL,
pci_conf_read(sc->sc_pc, sc->sc_tag, ATP8x0_CTRL)
| ATP8x0_CTRL_EN(channel));
}
}

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);
}

if (ACARD_IS_850(sc)) {
pci_conf_write(sc->sc_pc, sc->sc_tag,
ATP850_IDETIME(channel), idetime);
pci_conf_write(sc->sc_pc, sc->sc_tag, ATP850_UDMA, udma_mode);
} else {
pci_conf_write(sc->sc_pc, sc->sc_tag, ATP860_IDETIME, idetime);
pci_conf_write(sc->sc_pc, sc->sc_tag, ATP860_UDMA, udma_mode);
}
}