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NetBSD/sys/dev/pci/cypide.c

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/* $NetBSD: cypide.c,v 1.15 2005/05/24 05:25:15 lukem 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: cypide.c,v 1.15 2005/05/24 05:25:15 lukem Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.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_cy693_reg.h>
#include <dev/pci/cy82c693var.h>
static void cy693_chip_map(struct pciide_softc*, struct pci_attach_args*);
static void cy693_setup_channel(struct ata_channel*);
static int cypide_match(struct device *, struct cfdata *, void *);
static void cypide_attach(struct device *, struct device *, void *);
CFATTACH_DECL(cypide, sizeof(struct pciide_softc),
cypide_match, cypide_attach, NULL, NULL);
static const struct pciide_product_desc pciide_cypress_products[] = {
{ PCI_PRODUCT_CONTAQ_82C693,
IDE_16BIT_IOSPACE,
"Cypress 82C693 IDE Controller",
cy693_chip_map,
},
{ 0,
0,
NULL,
NULL
}
};
static int
cypide_match(struct device *parent, struct cfdata *match, void *aux)
{
struct pci_attach_args *pa = aux;
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ &&
PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
if (pciide_lookup_product(pa->pa_id, pciide_cypress_products))
return (2);
}
return (0);
}
static void
cypide_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_cypress_products));
}
static void
cy693_chip_map(struct pciide_softc *sc, struct pci_attach_args *pa)
{
struct pciide_channel *cp;
pcireg_t interface = PCI_INTERFACE(pa->pa_class);
bus_size_t cmdsize, ctlsize;
if (pciide_chipen(sc, pa) == 0)
return;
/*
* this chip has 2 PCI IDE functions, one for primary and one for
* secondary. So we need to call pciide_mapregs_compat() with
* the real channel
*/
if (pa->pa_function == 1) {
sc->sc_cy_compatchan = 0;
} else if (pa->pa_function == 2) {
sc->sc_cy_compatchan = 1;
} else {
aprint_error("%s: unexpected PCI function %d\n",
sc->sc_wdcdev.sc_atac.atac_dev.dv_xname, pa->pa_function);
return;
}
if (interface & PCIIDE_INTERFACE_BUS_MASTER_DMA) {
aprint_normal("%s: bus-master DMA support present",
sc->sc_wdcdev.sc_atac.atac_dev.dv_xname);
pciide_mapreg_dma(sc, pa);
} else {
aprint_normal("%s: hardware does not support DMA",
sc->sc_wdcdev.sc_atac.atac_dev.dv_xname);
sc->sc_dma_ok = 0;
}
aprint_normal("\n");
sc->sc_cy_handle = cy82c693_init(pa->pa_iot);
if (sc->sc_cy_handle == NULL) {
aprint_error("%s: unable to map hyperCache control registers\n",
sc->sc_wdcdev.sc_atac.atac_dev.dv_xname);
sc->sc_dma_ok = 0;
}
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;
}
sc->sc_wdcdev.sc_atac.atac_pio_cap = 4;
sc->sc_wdcdev.sc_atac.atac_dma_cap = 2;
sc->sc_wdcdev.sc_atac.atac_set_modes = cy693_setup_channel;
sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanarray;
sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
wdc_allocate_regs(&sc->sc_wdcdev);
/* Only one channel for this chip; if we are here it's enabled */
cp = &sc->pciide_channels[0];
sc->wdc_chanarray[0] = &cp->ata_channel;
cp->name = PCIIDE_CHANNEL_NAME(0);
cp->ata_channel.ch_channel = 0;
cp->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac;
cp->ata_channel.ch_queue =
malloc(sizeof(struct ata_queue), M_DEVBUF, M_NOWAIT);
if (cp->ata_channel.ch_queue == NULL) {
aprint_error("%s primary channel: "
"can't allocate memory for command queue",
sc->sc_wdcdev.sc_atac.atac_dev.dv_xname);
return;
}
aprint_normal("%s: primary channel %s to ",
sc->sc_wdcdev.sc_atac.atac_dev.dv_xname,
(interface & PCIIDE_INTERFACE_SETTABLE(0)) ?
"configured" : "wired");
if (interface & PCIIDE_INTERFACE_PCI(0)) {
aprint_normal("native-PCI mode\n");
pciide_mapregs_native(pa, cp, &cmdsize, &ctlsize,
pciide_pci_intr);
} else {
aprint_normal("compatibility mode\n");
pciide_mapregs_compat(pa, cp, sc->sc_cy_compatchan, &cmdsize,
&ctlsize);
if ((cp->ata_channel.ch_flags & ATACH_DISABLED) == 0)
pciide_map_compat_intr(pa, cp, sc->sc_cy_compatchan);
}
wdcattach(&cp->ata_channel);
}
static void
cy693_setup_channel(struct ata_channel *chp)
{
struct ata_drive_datas *drvp;
int drive;
u_int32_t cy_cmd_ctrl;
u_int32_t idedma_ctl;
struct pciide_channel *cp = CHAN_TO_PCHAN(chp);
struct pciide_softc *sc = CHAN_TO_PCIIDE(chp);
int dma_mode = -1;
ATADEBUG_PRINT(("cy693_chip_map: old timings reg 0x%x\n",
pci_conf_read(sc->sc_pc, sc->sc_tag, CY_CMD_CTRL)),DEBUG_PROBE);
cy_cmd_ctrl = 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) {
idedma_ctl |= IDEDMA_CTL_DRV_DMA(drive);
/* use Multiword DMA */
if (dma_mode == -1 || dma_mode > drvp->DMA_mode)
dma_mode = drvp->DMA_mode;
}
cy_cmd_ctrl |= (cy_pio_pulse[drvp->PIO_mode] <<
CY_CMD_CTRL_IOW_PULSE_OFF(drive));
cy_cmd_ctrl |= (cy_pio_rec[drvp->PIO_mode] <<
CY_CMD_CTRL_IOW_REC_OFF(drive));
cy_cmd_ctrl |= (cy_pio_pulse[drvp->PIO_mode] <<
CY_CMD_CTRL_IOR_PULSE_OFF(drive));
cy_cmd_ctrl |= (cy_pio_rec[drvp->PIO_mode] <<
CY_CMD_CTRL_IOR_REC_OFF(drive));
}
pci_conf_write(sc->sc_pc, sc->sc_tag, CY_CMD_CTRL, cy_cmd_ctrl);
chp->ch_drive[0].DMA_mode = dma_mode;
chp->ch_drive[1].DMA_mode = dma_mode;
if (dma_mode == -1)
dma_mode = 0;
if (sc->sc_cy_handle != NULL) {
/* Note: `multiple' is implied. */
cy82c693_write(sc->sc_cy_handle,
(sc->sc_cy_compatchan == 0) ?
CY_DMA_IDX_PRIMARY : CY_DMA_IDX_SECONDARY, dma_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);
}
ATADEBUG_PRINT(("cy693_chip_map: new timings reg 0x%x\n",
pci_conf_read(sc->sc_pc, sc->sc_tag, CY_CMD_CTRL)), DEBUG_PROBE);
}
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