NetBSD/sys/dev/pci/cy_pci.c

183 lines
4.4 KiB
C

/* $NetBSD: cy_pci.c,v 1.4 1996/10/21 22:56:29 thorpej Exp $ */
/*
* 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>
static int cy_probe_pci __P((struct device *, void *, void *));
static void cy_attach_pci __P((struct device *, struct device *, void *));
static int cy_map_pci __P((struct pci_attach_args *, struct cy_softc *,
bus_space_handle_t *, bus_size_t *, bus_size_t *));
static void cy_unmap_pci __P((struct cy_softc *, bus_space_handle_t,
bus_size_t, bus_size_t));
struct cfattach cy_pci_ca = {
sizeof(struct cy_softc), cy_probe_pci, cy_attach_pci
};
static int
cy_map_pci(pa, sc, ioh, iosize, memsize)
struct pci_attach_args *pa;
struct cy_softc *sc;
bus_space_handle_t *ioh;
bus_size_t *memsize;
bus_size_t *iosize;
{
bus_addr_t iobase;
bus_addr_t memaddr;
int cacheable;
if (pci_mem_find(pa->pa_pc, pa->pa_tag, 0x18, &memaddr, memsize,
&cacheable) != 0) {
printf("%s: can't find PCI card memory", sc->sc_dev.dv_xname);
return 0;
}
/* map the memory (non-cacheable) */
if (bus_space_map(sc->sc_memt, memaddr, *memsize, 0,
&sc->sc_bsh) != 0) {
printf("%s: couldn't map PCI memory region\n",
sc->sc_dev.dv_xname);
return 0;
}
/* the PCI Cyclom IO space is only used for enabling interrupts */
if (pci_io_find(pa->pa_pc, pa->pa_tag, 0x14, &iobase, iosize) != 0) {
printf("%s: couldn't find PCI io region\n",
sc->sc_dev.dv_xname);
goto unmapmem;
}
if (bus_space_map(sc->sc_iot, iobase, *iosize, 0, ioh) != 0) {
printf("%s: couldn't map PCI io region\n", sc->sc_dev.dv_xname);
goto unmapio;
}
return 1;
unmapio:
bus_space_unmap(sc->sc_iot, *ioh, *iosize);
unmapmem:
bus_space_unmap(sc->sc_memt, sc->sc_bsh, *memsize);
return 0;
}
static void
cy_unmap_pci(sc, ioh, iosize, memsize)
struct cy_softc *sc;
bus_space_handle_t ioh;
bus_size_t iosize;
bus_size_t memsize;
{
bus_space_unmap(sc->sc_iot, ioh, iosize);
bus_space_unmap(sc->sc_memt, sc->sc_bsh, memsize);
}
static int
cy_probe_pci(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct pci_attach_args *pa = aux;
bus_space_handle_t ioh;
bus_size_t memsize;
bus_size_t iosize;
int rv = 0;
struct cy_softc sc;
if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_CYCLADES)
return 0;
switch (PCI_PRODUCT(pa->pa_id)) {
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", pa->pa_id);
#endif
/* XXX THIS IS TOTALLY WRONG! XXX */
memcpy(&sc.sc_dev, match, sizeof(struct device));
sc.sc_iot = pa->pa_iot;
sc.sc_memt = pa->pa_memt;
sc.sc_bustype = CY_BUSTYPE_PCI;
if (cy_map_pci(pa, &sc, &ioh, &iosize, &memsize) == 0)
return 0;
#ifdef CY_DEBUG
printf("%s: pci mapped mem 0x%lx (size %d), io 0x%x (size %d)\n",
sc.sc_dev.dv_xname, memaddr, memsize, iobase, iosize);
#endif
if ((rv = cy_find(&sc)) == 0)
printf("%s: PCI Cyclom card with no CD1400s!?\n",
sc.sc_dev.dv_xname);
cy_unmap_pci(&sc, ioh, iosize, memsize);
return rv;
}
static void
cy_attach_pci(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct cy_softc *sc = (void *) self;
pci_intr_handle_t intrhandle;
bus_space_handle_t ioh;
bus_size_t memsize;
bus_size_t iosize;
struct pci_attach_args *pa = aux;
sc->sc_iot = pa->pa_iot;
sc->sc_memt = pa->pa_memt;
sc->sc_bustype = CY_BUSTYPE_PCI;
if (cy_map_pci(pa, sc, &ioh, &iosize, &memsize) == 0)
panic("%s: mapping failed", sc->sc_dev.dv_xname);
if (cy_find(sc) == 0)
panic("%s: Cannot find card", sc->sc_dev.dv_xname);
cy_attach(parent, self, aux);
/* Enable PCI card interrupts */
bus_space_write_2(sc->sc_iot, ioh, CY_PCI_INTENA,
bus_space_read_2(sc->sc_iot, ioh, CY_PCI_INTENA) | 0x900);
if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
pa->pa_intrline, &intrhandle) != 0)
panic("%s: couldn't map PCI interrupt", sc->sc_dev.dv_xname);
sc->sc_ih = pci_intr_establish(pa->pa_pc, intrhandle,
IPL_TTY, cy_intr, sc);
if (sc->sc_ih == NULL)
panic("%s: couldn't establish interrupt", sc->sc_dev.dv_xname);
}