NetBSD/sys/dev/pci/cy_pci.c

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/* $NetBSD: cy_pci.c,v 1.7 1997/06/17 05:44:22 cgd Exp $ */
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/*
* cy_pci.c
*
* Driver for Cyclades Cyclom-8/16/32 multiport serial cards
* (currently not tested with Cyclom-32 cards)
*
* Timo Rossi, 1996
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
#include <dev/ic/cd1400reg.h>
#include <dev/ic/cyreg.h>
#include <dev/ic/cyvar.h>
#ifdef __BROKEN_INDIRECT_CONFIG
static int cy_match_pci __P((struct device *, void *, void *));
#else
static int cy_match_pci __P((struct device *, struct cfdata *, void *));
#endif
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static void cy_attach_pci __P((struct device *, struct device *, void *));
static int cy_map_pci __P((struct pci_attach_args *, bus_space_tag_t *,
bus_space_handle_t *, bus_size_t *, bus_space_tag_t *,
bus_space_handle_t *, bus_size_t *));
static void cy_unmap_pci __P((bus_space_tag_t, bus_space_handle_t,
bus_size_t, bus_space_tag_t, bus_space_handle_t, bus_size_t));
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struct cfattach cy_pci_ca = {
sizeof(struct cy_softc), cy_match_pci, cy_attach_pci
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};
static int
cy_map_pci(pap, iotp, iohp, iosizep, memtp, memhp, memsizep)
struct pci_attach_args *pap;
bus_space_tag_t *iotp, *memtp;
bus_space_handle_t *iohp, *memhp;
bus_size_t *iosizep, *memsizep;
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{
int ioh_valid, memh_valid;
pcireg_t expected;
/* Map I/O (if possible). */
ioh_valid = (pci_mapreg_map(pap, 0x14, PCI_MAPREG_TYPE_IO, 0,
iotp, iohp, NULL, iosizep) == 0);
/* Map mem (if possible). Expected mem type depends on board ID. */
expected = PCI_MAPREG_TYPE_MEM;
if (PCI_PRODUCT(pap->pa_id) == PCI_PRODUCT_CYCLADES_CYCLOMY_1)
expected |= PCI_MAPREG_MEM_TYPE_32BIT_1M;
else
expected |= PCI_MAPREG_MEM_TYPE_32BIT;
memh_valid = (pci_mapreg_map(pap, 0x18, expected, 0,
memtp, memhp, NULL, memsizep) == 0);
if (ioh_valid && memh_valid)
return (1);
if (ioh_valid)
bus_space_unmap(*iotp, *iohp, *iosizep);
if (memh_valid)
bus_space_unmap(*memtp, *memhp, *memsizep);
return (0);
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}
static void
cy_unmap_pci(iot, ioh, iosize, memt, memh, memsize)
bus_space_tag_t iot, memt;
bus_space_handle_t ioh, memh;
bus_size_t iosize, memsize;
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{
bus_space_unmap(iot, ioh, iosize);
bus_space_unmap(memt, memh, memsize);
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}
static int
cy_match_pci(parent, match, aux)
struct device *parent;
#ifdef __BROKEN_INDIRECT_CONFIG
void *match;
#else
struct cfdata *match;
#endif
void *aux;
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{
struct pci_attach_args *pap = aux;
bus_space_tag_t iot, memt;
bus_space_handle_t ioh, memh;
bus_size_t iosize, memsize;
if (PCI_VENDOR(pap->pa_id) != PCI_VENDOR_CYCLADES)
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return 0;
switch (PCI_PRODUCT(pap->pa_id)) {
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case PCI_PRODUCT_CYCLADES_CYCLOMY_1:
break;
case PCI_PRODUCT_CYCLADES_CYCLOMY_2:
break;
default:
return 0;
}
#ifdef CY_DEBUG
printf("cy: Found Cyclades PCI device, id = 0x%x\n", pap->pa_id);
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#endif
if (cy_map_pci(pap, &iot, &ioh, &iosize, &memt, &memh, &memsize) == 0)
return (0);
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#if 0
XXX probably should do something like this, but this code is just
XXX too broken.
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#ifdef CY_DEBUG
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printf("%s: pci mapped mem 0x%lx (size %d), io 0x%x (size %d)\n",
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sc.sc_dev.dv_xname, memaddr, memsize, iobase, iosize);
#endif
if ((rv = cy_find(&sc)) == 0)
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printf("%s: PCI Cyclom card with no CD1400s!?\n",
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sc.sc_dev.dv_xname);
#endif /* 0 */
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cy_unmap_pci(iot, ioh, iosize, memt, memh, memsize);
return (1);
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}
static void
cy_attach_pci(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct cy_softc *sc = (void *) self;
struct pci_attach_args *pap = aux;
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pci_intr_handle_t intrhandle;
bus_space_tag_t iot, memt;
bus_space_handle_t ioh, memh;
bus_size_t iosize, memsize;
const char *intrstr;
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sc->sc_bustype = CY_BUSTYPE_PCI;
if (cy_map_pci(pap, &iot, &ioh, &iosize, &memt, &memh,
&memsize) == 0) {
printf(": unable to map device registers\n");
return;
}
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sc->sc_memt = memt;
sc->sc_bsh = memh;
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if (cy_find(sc) == 0) {
printf(": cannot find CD1400s\n");
return;
}
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/* Set up interrupt handler. */
if (pci_intr_map(pap->pa_pc, pap->pa_intrtag, pap->pa_intrpin,
pap->pa_intrline, &intrhandle) != 0) {
printf(": couldn't map PCI interrupt\n");
return;
}
intrstr = pci_intr_string(pap->pa_pc, intrhandle);
sc->sc_ih = pci_intr_establish(pap->pa_pc, intrhandle, IPL_TTY,
cy_intr, sc);
if (sc->sc_ih == NULL) {
printf(": couldn't establish interrupt");
if (intrstr != NULL)
printf(" at %s", intrstr);
printf("\n");
return;
}
if (intrstr != NULL)
printf(": interrupting at %s\n%s", intrstr, self->dv_xname);
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/* attach the hardware */
cy_attach(parent, self, aux);
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/* Enable PCI card interrupts */
bus_space_write_2(iot, ioh, CY_PCI_INTENA,
bus_space_read_2(iot, ioh, CY_PCI_INTENA) | 0x900);
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}