diff options
Diffstat (limited to 'sys/arch/hppa64/dev/apic.c')
| -rw-r--r-- | sys/arch/hppa64/dev/apic.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/sys/arch/hppa64/dev/apic.c b/sys/arch/hppa64/dev/apic.c new file mode 100644 index 00000000000..d4a94787853 --- /dev/null +++ b/sys/arch/hppa64/dev/apic.c @@ -0,0 +1,132 @@ +/* $OpenBSD: apic.c,v 1.1 2005/04/01 10:40:47 mickey Exp $ */ + +/* + * Copyright (c) 2005 Michael Shalayeff + * All rights reserved. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN + * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT + * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#define APIC_DEBUG + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/device.h> + +#include <dev/pci/pcireg.h> +#include <dev/pci/pcivar.h> +#include <dev/pci/pcidevs.h> + +#include <hppa64/dev/elroyreg.h> +#include <hppa64/dev/elroyvar.h> + + +void +apic_write(volatile struct elroy_regs *r, u_int32_t reg, u_int32_t val) +{ + elroy_write32(&r->apic_addr, htole32(reg)); + elroy_write32(&r->apic_data, htole32(val)); +} + +u_int32_t +apic_read(volatile struct elroy_regs *r, u_int32_t reg) +{ + elroy_write32(&r->apic_addr, htole32(reg)); + return letoh32(elroy_read32(&r->apic_data)); +} + +void +apic_attach(struct elroy_softc *sc) +{ + volatile struct elroy_regs *r = sc->sc_regs; + u_int32_t data; + + data = apic_read(r, APIC_VERSION); + sc->sc_nints = (data & APIC_VERSION_NENT) >> APIC_VERSION_NENT_SHIFT; + printf("APIC ver 0x%x %d ents\n", + data & APIC_VERSION_MASK, sc->sc_nints); +} + +int +apic_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) +{ + pci_chipset_tag_t pc = pa->pa_pc; + struct elroy_softc *sc = pc->_cookie; + pcitag_t tag = pa->pa_tag; + hppa_hpa_t hpa = cpu_gethpa(0); + pcireg_t reg; + + reg = pci_conf_read(pc, tag, PCI_INTERRUPT_REG); +printf(" pin=%d line=%d ", PCI_INTERRUPT_PIN(reg), PCI_INTERRUPT_LINE(reg)); + apic_write(sc->sc_regs, APIC_ENT0(PCI_INTERRUPT_PIN(reg)), + PCI_INTERRUPT_LINE(reg)); + apic_write(sc->sc_regs, APIC_ENT1(PCI_INTERRUPT_PIN(reg)), + ((hpa & 0x0ff00000) >> 4) | ((hpa & 0x000ff000) << 12)); + *ihp = PCI_INTERRUPT_LINE(reg) + 1; + return (*ihp == 0); +} + +const char * +apic_intr_string(void *v, pci_intr_handle_t ih) +{ + static char buf[32]; + + snprintf(buf, 32, "irq %ld", ih); + + return (buf); +} + +void * +apic_intr_establish(void *v, pci_intr_handle_t ih, + int pri, int (*handler)(void *), void *arg, char *name) +{ + /* struct elroy_softc *sc = v; */ + /* volatile struct elroy_regs *r = sc->sc_regs; */ + /* void *iv = NULL; */ + + /* no mapping or bogus */ + if (ih <= 0 || ih > 63) + return (NULL); + +#if 0 +TODO + if ((iv = cpu_intr_map(sc->sc_ih, pri, ih - 1, handler, arg, name))) { + if (cold) + sc->sc_imr |= (1 << (ih - 1)); + else + /* r->imr = sc->sc_imr |= (1 << (ih - 1)) */; + } +#endif + + return (arg); +} + +void +apic_intr_disestablish(void *v, void *cookie) +{ +#if 0 + struct elroy_softc *sc = v; + volatile struct elroy_regs *r = sc->sc_regs; + + r->imr &= ~(1 << (ih - 1)); + + TODO cpu_intr_unmap(sc->sc_ih, cookie); +#endif +} + +int +apic_intr(void *v) +{ + + return (0); +} |