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NetBSD/sys/dev/pci/pdcide.c

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/* $NetBSD: pdcide.c,v 1.12 2004/08/02 19:08:16 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/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_pdc202xx_reg.h>
static void pdc202xx_chip_map(struct pciide_softc *, struct pci_attach_args *);
static void pdc202xx_setup_channel(struct wdc_channel *);
static void pdc20268_setup_channel(struct wdc_channel *);
static int pdc202xx_pci_intr(void *);
static int pdc20265_pci_intr(void *);
static void pdc20262_dma_start(void *, int, int);
static int pdc20262_dma_finish(void *, int, int, int);
static int pdcide_match(struct device *, struct cfdata *, void *);
static void pdcide_attach(struct device *, struct device *, void *);
CFATTACH_DECL(pdcide, sizeof(struct pciide_softc),
pdcide_match, pdcide_attach, NULL, NULL);
static const struct pciide_product_desc pciide_promise_products[] = {
{ PCI_PRODUCT_PROMISE_PDC20246,
0,
"Promise Ultra33/ATA Bus Master IDE Accelerator",
pdc202xx_chip_map,
},
{ PCI_PRODUCT_PROMISE_PDC20262,
0,
"Promise Ultra66/ATA Bus Master IDE Accelerator",
pdc202xx_chip_map,
},
{ PCI_PRODUCT_PROMISE_PDC20267,
0,
"Promise Ultra100/ATA Bus Master IDE Accelerator",
pdc202xx_chip_map,
},
{ PCI_PRODUCT_PROMISE_PDC20265,
0,
"Promise Ultra100/ATA Bus Master IDE Accelerator",
pdc202xx_chip_map,
},
{ PCI_PRODUCT_PROMISE_PDC20268,
0,
"Promise Ultra100TX2/ATA Bus Master IDE Accelerator",
pdc202xx_chip_map,
},
{ PCI_PRODUCT_PROMISE_PDC20270,
0,
"Promise Ultra100TX2v2/ATA Bus Master IDE Accelerator",
pdc202xx_chip_map,
},
{ PCI_PRODUCT_PROMISE_PDC20269,
0,
"Promise Ultra133/ATA Bus Master IDE Accelerator",
pdc202xx_chip_map,
},
{ PCI_PRODUCT_PROMISE_PDC20276,
0,
"Promise Ultra133TX2/ATA Bus Master IDE Accelerator",
pdc202xx_chip_map,
},
{ PCI_PRODUCT_PROMISE_PDC20275,
0,
"Promise Ultra133/ATA Bus Master IDE Accelerator (MB)",
pdc202xx_chip_map,
},
{ PCI_PRODUCT_PROMISE_PDC20271,
0,
"Promise Ultra133TX2v2/ATA Bus Master IDE Accelerator",
pdc202xx_chip_map,
},
{ PCI_PRODUCT_PROMISE_PDC20277,
0,
"Promise Fasttrak133 Lite Bus Master IDE Accelerator",
pdc202xx_chip_map,
},
{ 0,
0,
NULL,
NULL
}
};
static int
pdcide_match(struct device *parent, struct cfdata *match, void *aux)
{
struct pci_attach_args *pa = aux;
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_PROMISE) {
if (pciide_lookup_product(pa->pa_id, pciide_promise_products))
return (2);
}
return (0);
}
static void
pdcide_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_promise_products));
}
/* Macros to test product */
#define PDC_IS_262(sc) \
((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20262 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20267 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20265 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20268 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20270 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20269 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20276 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20275 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20271 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20277)
#define PDC_IS_265(sc) \
((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20267 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20265 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20268 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20270 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20269 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20276 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20275 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20271 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20277)
#define PDC_IS_268(sc) \
((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20268 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20270 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20269 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20276 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20275 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20271 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20277)
#define PDC_IS_276(sc) \
((sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20269 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20276 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20275 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20271 || \
(sc)->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20277)
static void
pdc202xx_chip_map(struct pciide_softc *sc, struct pci_attach_args *pa)
{
struct pciide_channel *cp;
int channel;
pcireg_t interface, st, mode;
bus_size_t cmdsize, ctlsize;
if (!PDC_IS_268(sc)) {
st = pci_conf_read(sc->sc_pc, sc->sc_tag, PDC2xx_STATE);
WDCDEBUG_PRINT(("pdc202xx_setup_chip: controller state 0x%x\n",
st), DEBUG_PROBE);
/* turn off RAID mode */
if (st & PDC2xx_STATE_IDERAID) {
WDCDEBUG_PRINT(("pdc202xx_setup_chip: turning off RAID mode\n"), DEBUG_PROBE);
st &= ~PDC2xx_STATE_IDERAID;
pci_conf_write(sc->sc_pc, sc->sc_tag, PDC2xx_STATE, st);
}
} else
st = PDC2xx_STATE_NATIVE | PDC262_STATE_EN(0) | PDC262_STATE_EN(1);
if (pciide_chipen(sc, pa) == 0)
return;
/*
* can't rely on the PCI_CLASS_REG content if the chip was in raid
* mode. We have to fake interface
*/
interface = PCIIDE_INTERFACE_SETTABLE(0) | PCIIDE_INTERFACE_SETTABLE(1);
if (st & PDC2xx_STATE_NATIVE)
interface |= PCIIDE_INTERFACE_PCI(0) | PCIIDE_INTERFACE_PCI(1);
aprint_normal("%s: bus-master DMA support present",
sc->sc_wdcdev.sc_dev.dv_xname);
pciide_mapreg_dma(sc, pa);
aprint_normal("\n");
sc->sc_wdcdev.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32 |
WDC_CAPABILITY_MODE;
if (sc->sc_dma_ok) {
sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA | WDC_CAPABILITY_UDMA;
sc->sc_wdcdev.cap |= WDC_CAPABILITY_IRQACK;
sc->sc_wdcdev.irqack = pciide_irqack;
}
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_RAID)
sc->sc_wdcdev.cap |= WDC_CAPABILITY_RAID;
sc->sc_wdcdev.PIO_cap = 4;
sc->sc_wdcdev.DMA_cap = 2;
if (PDC_IS_276(sc))
sc->sc_wdcdev.UDMA_cap = 6;
else if (PDC_IS_265(sc))
sc->sc_wdcdev.UDMA_cap = 5;
else if (PDC_IS_262(sc))
sc->sc_wdcdev.UDMA_cap = 4;
else
sc->sc_wdcdev.UDMA_cap = 2;
sc->sc_wdcdev.set_modes = PDC_IS_268(sc) ?
pdc20268_setup_channel : pdc202xx_setup_channel;
sc->sc_wdcdev.channels = sc->wdc_chanarray;
sc->sc_wdcdev.nchannels = PCIIDE_NUM_CHANNELS;
if (sc->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20262 ||
sc->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20267 ||
sc->sc_pp->ide_product == PCI_PRODUCT_PROMISE_PDC20265) {
sc->sc_wdcdev.dma_start = pdc20262_dma_start;
sc->sc_wdcdev.dma_finish = pdc20262_dma_finish;
}
if (!PDC_IS_268(sc)) {
/* setup failsafe defaults */
mode = 0;
mode = PDC2xx_TIM_SET_PA(mode, pdc2xx_pa[0]);
mode = PDC2xx_TIM_SET_PB(mode, pdc2xx_pb[0]);
mode = PDC2xx_TIM_SET_MB(mode, pdc2xx_dma_mb[0]);
mode = PDC2xx_TIM_SET_MC(mode, pdc2xx_dma_mc[0]);
for (channel = 0;
channel < sc->sc_wdcdev.nchannels;
channel++) {
WDCDEBUG_PRINT(("pdc202xx_setup_chip: channel %d "
"drive 0 initial timings 0x%x, now 0x%x\n",
channel, pci_conf_read(sc->sc_pc, sc->sc_tag,
PDC2xx_TIM(channel, 0)), mode | PDC2xx_TIM_IORDYp),
DEBUG_PROBE);
pci_conf_write(sc->sc_pc, sc->sc_tag,
PDC2xx_TIM(channel, 0), mode | PDC2xx_TIM_IORDYp);
WDCDEBUG_PRINT(("pdc202xx_setup_chip: channel %d "
"drive 1 initial timings 0x%x, now 0x%x\n",
channel, pci_conf_read(sc->sc_pc, sc->sc_tag,
PDC2xx_TIM(channel, 1)), mode), DEBUG_PROBE);
pci_conf_write(sc->sc_pc, sc->sc_tag,
PDC2xx_TIM(channel, 1), mode);
}
mode = PDC2xx_SCR_DMA;
if (PDC_IS_265(sc)) {
mode = PDC2xx_SCR_SET_GEN(mode, PDC265_SCR_GEN_LAT);
} else if (PDC_IS_262(sc)) {
mode = PDC2xx_SCR_SET_GEN(mode, PDC262_SCR_GEN_LAT);
} else {
/* the BIOS set it up this way */
mode = PDC2xx_SCR_SET_GEN(mode, 0x1);
}
mode = PDC2xx_SCR_SET_I2C(mode, 0x3); /* ditto */
mode = PDC2xx_SCR_SET_POLL(mode, 0x1); /* ditto */
WDCDEBUG_PRINT(("pdc202xx_setup_chip: initial SCR 0x%x, "
"now 0x%x\n",
bus_space_read_4(sc->sc_dma_iot, sc->sc_dma_ioh,
PDC2xx_SCR),
mode), DEBUG_PROBE);
bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
PDC2xx_SCR, mode);
/* controller initial state register is OK even without BIOS */
/* Set DMA mode to IDE DMA compatibility */
mode =
bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_PM);
WDCDEBUG_PRINT(("pdc202xx_setup_chip: primary mode 0x%x", mode),
DEBUG_PROBE);
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_PM,
mode | 0x1);
mode =
bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_SM);
WDCDEBUG_PRINT((", secondary mode 0x%x\n", mode ), DEBUG_PROBE);
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_SM,
mode | 0x1);
}
for (channel = 0; channel < sc->sc_wdcdev.nchannels; channel++) {
cp = &sc->pciide_channels[channel];
if (pciide_chansetup(sc, channel, interface) == 0)
continue;
if ((st & (PDC_IS_262(sc) ?
PDC262_STATE_EN(channel):PDC246_STATE_EN(channel))) == 0) {
aprint_normal("%s: %s channel ignored (disabled)\n",
sc->sc_wdcdev.sc_dev.dv_xname, cp->name);
cp->wdc_channel.ch_flags |= WDCF_DISABLED;
continue;
}
pciide_mapchan(pa, cp, interface, &cmdsize, &ctlsize,
PDC_IS_265(sc) ? pdc20265_pci_intr : pdc202xx_pci_intr);
/* clear interrupt, in case there is one pending */
bus_space_write_1(sc->sc_dma_iot, cp->dma_iohs[IDEDMA_CTL], 0,
IDEDMA_CTL_INTR);
}
return;
}
static void
pdc202xx_setup_channel(struct wdc_channel *chp)
{
struct ata_drive_datas *drvp;
int drive;
pcireg_t mode, st;
u_int32_t idedma_ctl, scr, atapi;
struct pciide_channel *cp = (struct pciide_channel*)chp;
struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.ch_wdc;
int channel = chp->ch_channel;
/* setup DMA if needed */
pciide_channel_dma_setup(cp);
idedma_ctl = 0;
WDCDEBUG_PRINT(("pdc202xx_setup_channel %s: scr 0x%x\n",
sc->sc_wdcdev.sc_dev.dv_xname,
bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh, PDC262_U66)),
DEBUG_PROBE);
/* Per channel settings */
if (PDC_IS_262(sc)) {
scr = bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
PDC262_U66);
st = pci_conf_read(sc->sc_pc, sc->sc_tag, PDC2xx_STATE);
/* Trim UDMA mode */
if ((st & PDC262_STATE_80P(channel)) != 0 ||
(chp->ch_drive[0].drive_flags & DRIVE_UDMA &&
chp->ch_drive[0].UDMA_mode <= 2) ||
(chp->ch_drive[1].drive_flags & DRIVE_UDMA &&
chp->ch_drive[1].UDMA_mode <= 2)) {
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;
}
/* Set U66 if needed */
if ((chp->ch_drive[0].drive_flags & DRIVE_UDMA &&
chp->ch_drive[0].UDMA_mode > 2) ||
(chp->ch_drive[1].drive_flags & DRIVE_UDMA &&
chp->ch_drive[1].UDMA_mode > 2))
scr |= PDC262_U66_EN(channel);
else
scr &= ~PDC262_U66_EN(channel);
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
PDC262_U66, scr);
WDCDEBUG_PRINT(("pdc202xx_setup_channel %s:%d: ATAPI 0x%x\n",
sc->sc_wdcdev.sc_dev.dv_xname, channel,
bus_space_read_4(sc->sc_dma_iot, sc->sc_dma_ioh,
PDC262_ATAPI(channel))), DEBUG_PROBE);
if (chp->ch_drive[0].drive_flags & DRIVE_ATAPI ||
chp->ch_drive[1].drive_flags & DRIVE_ATAPI) {
if (((chp->ch_drive[0].drive_flags & DRIVE_UDMA) &&
!(chp->ch_drive[1].drive_flags & DRIVE_UDMA) &&
(chp->ch_drive[1].drive_flags & DRIVE_DMA)) ||
((chp->ch_drive[1].drive_flags & DRIVE_UDMA) &&
!(chp->ch_drive[0].drive_flags & DRIVE_UDMA) &&
(chp->ch_drive[0].drive_flags & DRIVE_DMA)))
atapi = 0;
else
atapi = PDC262_ATAPI_UDMA;
bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
PDC262_ATAPI(channel), atapi);
}
}
for (drive = 0; drive < 2; drive++) {
drvp = &chp->ch_drive[drive];
/* If no drive, skip */
if ((drvp->drive_flags & DRIVE) == 0)
continue;
mode = 0;
if (drvp->drive_flags & DRIVE_UDMA) {
/* use Ultra/DMA */
drvp->drive_flags &= ~DRIVE_DMA;
mode = PDC2xx_TIM_SET_MB(mode,
pdc2xx_udma_mb[drvp->UDMA_mode]);
mode = PDC2xx_TIM_SET_MC(mode,
pdc2xx_udma_mc[drvp->UDMA_mode]);
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
} else if (drvp->drive_flags & DRIVE_DMA) {
mode = PDC2xx_TIM_SET_MB(mode,
pdc2xx_dma_mb[drvp->DMA_mode]);
mode = PDC2xx_TIM_SET_MC(mode,
pdc2xx_dma_mc[drvp->DMA_mode]);
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
} else {
mode = PDC2xx_TIM_SET_MB(mode,
pdc2xx_dma_mb[0]);
mode = PDC2xx_TIM_SET_MC(mode,
pdc2xx_dma_mc[0]);
}
mode = PDC2xx_TIM_SET_PA(mode, pdc2xx_pa[drvp->PIO_mode]);
mode = PDC2xx_TIM_SET_PB(mode, pdc2xx_pb[drvp->PIO_mode]);
if (drvp->drive_flags & DRIVE_ATA)
mode |= PDC2xx_TIM_PRE;
mode |= PDC2xx_TIM_SYNC | PDC2xx_TIM_ERRDY;
if (drvp->PIO_mode >= 3) {
mode |= PDC2xx_TIM_IORDY;
if (drive == 0)
mode |= PDC2xx_TIM_IORDYp;
}
WDCDEBUG_PRINT(("pdc202xx_setup_channel: %s:%d:%d "
"timings 0x%x\n",
sc->sc_wdcdev.sc_dev.dv_xname,
chp->ch_channel, drive, mode), DEBUG_PROBE);
pci_conf_write(sc->sc_pc, sc->sc_tag,
PDC2xx_TIM(chp->ch_channel, drive), mode);
}
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
pdc20268_setup_channel(struct wdc_channel *chp)
{
struct ata_drive_datas *drvp;
int drive;
u_int32_t idedma_ctl;
struct pciide_channel *cp = (struct pciide_channel*)chp;
struct pciide_softc *sc = (struct pciide_softc *)cp->wdc_channel.ch_wdc;
int u100;
/* setup DMA if needed */
pciide_channel_dma_setup(cp);
idedma_ctl = 0;
/* I don't know what this is for, FreeBSD does it ... */
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CMD + 0x1 + IDEDMA_SCH_OFFSET * chp->ch_channel, 0x0b);
/*
* cable type detect, from FreeBSD
*/
u100 = (bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh,
IDEDMA_CMD + 0x3 + IDEDMA_SCH_OFFSET * chp->ch_channel) & 0x04) ?
0 : 1;
for (drive = 0; drive < 2; drive++) {
drvp = &chp->ch_drive[drive];
/* If no drive, skip */
if ((drvp->drive_flags & DRIVE) == 0)
continue;
if (drvp->drive_flags & DRIVE_UDMA) {
/* use Ultra/DMA */
drvp->drive_flags &= ~DRIVE_DMA;
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
if (drvp->UDMA_mode > 2 && u100 == 0)
drvp->UDMA_mode = 2;
} else if (drvp->drive_flags & DRIVE_DMA) {
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
}
}
/* nothing to do to setup modes, the controller snoop SET_FEATURE cmd */
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 int
pdc202xx_pci_intr(void *arg)
{
struct pciide_softc *sc = arg;
struct pciide_channel *cp;
struct wdc_channel *wdc_cp;
int i, rv, crv;
u_int32_t scr;
rv = 0;
scr = bus_space_read_4(sc->sc_dma_iot, sc->sc_dma_ioh, PDC2xx_SCR);
for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
cp = &sc->pciide_channels[i];
wdc_cp = &cp->wdc_channel;
/* If a compat channel skip. */
if (cp->compat)
continue;
if (scr & PDC2xx_SCR_INT(i)) {
crv = wdcintr(wdc_cp);
if (crv == 0) {
printf("%s:%d: bogus intr (reg 0x%x)\n",
sc->sc_wdcdev.sc_dev.dv_xname, i, scr);
pciide_irqack(wdc_cp);
} else
rv = 1;
}
}
return rv;
}
static int
pdc20265_pci_intr(void *arg)
{
struct pciide_softc *sc = arg;
struct pciide_channel *cp;
struct wdc_channel *wdc_cp;
int i, rv, crv;
u_int32_t dmastat;
rv = 0;
for (i = 0; i < sc->sc_wdcdev.nchannels; i++) {
cp = &sc->pciide_channels[i];
wdc_cp = &cp->wdc_channel;
/* If a compat channel skip. */
if (cp->compat)
continue;
#if 0
bus_space_write_1(sc->sc_dma_iot, sc->sc_dma_ioh, IDEDMA_CMD + 0x1 + IDEDMA_SCH_OFFSET * i, 0x0b);
if ((bus_space_read_1(sc->sc_dma_iot, sc->sc_dma_ioh, IDEDMA_CMD + 0x3 + IDEDMA_SCH_OFFSET * i) & 0x20) == 0)
continue;
#endif
/*
* The Ultra/100 seems to assert PDC2xx_SCR_INT * spuriously,
* however it asserts INT in IDEDMA_CTL even for non-DMA ops.
* So use it instead (requires 2 reg reads instead of 1,
* but we can't do it another way).
*/
dmastat = bus_space_read_1(sc->sc_dma_iot,
cp->dma_iohs[IDEDMA_CTL], 0);
if((dmastat & IDEDMA_CTL_INTR) == 0)
continue;
crv = wdcintr(wdc_cp);
if (crv == 0)
printf("%s:%d: bogus intr\n",
sc->sc_wdcdev.sc_dev.dv_xname, i);
else
rv = 1;
}
return rv;
}
static void
pdc20262_dma_start(void *v, int channel, int drive)
{
struct pciide_softc *sc = v;
struct pciide_dma_maps *dma_maps =
&sc->pciide_channels[channel].dma_maps[drive];
int atapi;
if (dma_maps->dma_flags & WDC_DMA_LBA48) {
atapi = (dma_maps->dma_flags & WDC_DMA_READ) ?
PDC262_ATAPI_LBA48_READ : PDC262_ATAPI_LBA48_WRITE;
atapi |= dma_maps->dmamap_xfer->dm_mapsize >> 1;
bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
PDC262_ATAPI(channel), atapi);
}
pciide_dma_start(v, channel, drive);
}
static int
pdc20262_dma_finish(void *v, int channel, int drive, int force)
{
struct pciide_softc *sc = v;
struct pciide_dma_maps *dma_maps =
&sc->pciide_channels[channel].dma_maps[drive];
struct wdc_channel *chp;
int atapi, error;
error = pciide_dma_finish(v, channel, drive, force);
if (dma_maps->dma_flags & WDC_DMA_LBA48) {
chp = sc->wdc_chanarray[channel];
atapi = 0;
if (chp->ch_drive[0].drive_flags & DRIVE_ATAPI ||
chp->ch_drive[1].drive_flags & DRIVE_ATAPI) {
if ((!(chp->ch_drive[0].drive_flags & DRIVE_UDMA) ||
(chp->ch_drive[1].drive_flags & DRIVE_UDMA) ||
!(chp->ch_drive[1].drive_flags & DRIVE_DMA)) &&
(!(chp->ch_drive[1].drive_flags & DRIVE_UDMA) ||
(chp->ch_drive[0].drive_flags & DRIVE_UDMA) ||
!(chp->ch_drive[0].drive_flags & DRIVE_DMA)))
atapi = PDC262_ATAPI_UDMA;
}
bus_space_write_4(sc->sc_dma_iot, sc->sc_dma_ioh,
PDC262_ATAPI(channel), atapi);
}
return error;
}
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