459 lines
13 KiB
C
459 lines
13 KiB
C
/* $NetBSD: vrpciu.c,v 1.1 2001/06/13 07:32:48 enami Exp $ */
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/*-
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* Copyright (c) 2001 Enami Tsugutomo.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#define _HPCMIPS_BUS_DMA_PRIVATE /* XXX */
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#include <machine/bus.h>
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#include <dev/pci/pcivar.h>
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#include <hpcmips/vr/icureg.h>
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#include <hpcmips/vr/vripvar.h>
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#include <hpcmips/vr/vrpciureg.h>
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#include <hpcmips/vr/vrc4173bcuvar.h>
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#include "pci.h"
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#ifdef DEBUG
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#define DPRINTF(args) printf args
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#else
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#define DPRINTF(args)
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#endif
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struct vrpciu_softc {
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struct device sc_dev;
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vrip_chipset_tag_t sc_vc;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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void *sc_ih;
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struct vrc4173bcu_softc *sc_bcu; /* vrc4173bcu */
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struct hpcmips_pci_chipset sc_pc;
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};
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static void vrpciu_write(struct vrpciu_softc *, int, u_int32_t);
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static u_int32_t
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vrpciu_read(struct vrpciu_softc *, int);
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#ifdef DEBUG
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static void vrpciu_write_2(struct vrpciu_softc *, int, u_int16_t)
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__attribute__((unused));
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static u_int16_t
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vrpciu_read_2(struct vrpciu_softc *, int);
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#endif
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static int vrpciu_match(struct device *, struct cfdata *, void *);
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static void vrpciu_attach(struct device *, struct device *, void *);
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#if NPCI > 0
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static int vrpciu_print(void *, const char *);
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#endif
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static int vrpciu_intr(void *);
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static void vrpciu_attach_hook(struct device *, struct device *,
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struct pcibus_attach_args *);
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static int vrpciu_bus_maxdevs(pci_chipset_tag_t, int);
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static pcitag_t vrpciu_make_tag(pci_chipset_tag_t, int, int, int);
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static void vrpciu_decompose_tag(pci_chipset_tag_t, pcitag_t, int *, int *,
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int *);
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static pcireg_t vrpciu_conf_read(pci_chipset_tag_t, pcitag_t, int);
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static void vrpciu_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t);
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static void *vrpciu_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
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int, int (*)(void *), void *);
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static void vrpciu_intr_disestablish(pci_chipset_tag_t, void *);
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static void *vrpciu_vrcintr_establish(pci_chipset_tag_t, int,
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int (*)(void *), void *);
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static void vrpciu_vrcintr_disestablish(pci_chipset_tag_t, void *);
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struct cfattach vrpciu_ca = {
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sizeof(struct vrpciu_softc), vrpciu_match, vrpciu_attach
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};
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static void
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vrpciu_write(struct vrpciu_softc *sc, int offset, u_int32_t val)
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{
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, offset, val);
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}
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static u_int32_t
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vrpciu_read(struct vrpciu_softc *sc, int offset)
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{
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return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, offset));
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}
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#ifdef DEBUG
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static void
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vrpciu_write_2(struct vrpciu_softc *sc, int offset, u_int16_t val)
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{
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bus_space_write_2(sc->sc_iot, sc->sc_ioh, offset, val);
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}
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static u_int16_t
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vrpciu_read_2(struct vrpciu_softc *sc, int offset)
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{
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return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, offset));
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}
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#endif
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static int
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vrpciu_match(struct device *parent, struct cfdata *match, void *aux)
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{
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return (1);
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}
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static void
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vrpciu_attach(struct device *parent, struct device *self, void *aux)
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{
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struct vrpciu_softc *sc = (struct vrpciu_softc *)self;
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pci_chipset_tag_t pc = &sc->sc_pc;
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struct vrip_attach_args *va = aux;
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bus_space_tag_t iot;
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u_int32_t reg;
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#if NPCI > 0
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struct pcibus_attach_args pba;
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#endif
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sc->sc_vc = va->va_vc;
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sc->sc_iot = va->va_iot;
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if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 0,
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&sc->sc_ioh)) {
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printf(": couldn't map io space\n");
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return;
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}
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sc->sc_ih = vrip_intr_establish(va->va_vc, va->va_intr, IPL_TTY,
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vrpciu_intr, sc);
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if (sc->sc_ih == NULL) {
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printf(": couldn't establish interrupt\n");
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return;
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}
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/* Enable level 2 interrupt */
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vrip_intr_setmask2(va->va_vc, sc->sc_ih, PCIINT_INT0, 1);
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printf("\n");
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#ifdef DEBUG
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#define DUMP_MAW(sc, name, reg) do { \
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printf("%s: %s =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
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(name), (reg)); \
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printf("%s:\tIBA/MASK =\t0x%08x/0x%08x (0x%08x - 0x%08x)\n", \
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(sc)->sc_dev.dv_xname, \
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reg & VRPCIU_MAW_IBAMASK, VRPCIU_MAW_ADDRMASK(reg), \
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VRPCIU_MAW_ADDR(reg), \
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VRPCIU_MAW_ADDR(reg) + VRPCIU_MAW_SIZE(reg)); \
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printf("%s:\tWINEN =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
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reg & VRPCIU_MAW_WINEN); \
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printf("%s:\tPCIADR =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
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VRPCIU_MAW_PCIADDR(reg)); \
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} while (0)
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#define DUMP_TAW(sc, name, reg) do { \
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printf("%s: %s =\t\t0x%08x\n", (sc)->sc_dev.dv_xname, \
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(name), (reg)); \
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printf("%s:\tMASK =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
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VRPCIU_TAW_ADDRMASK(reg)); \
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printf("%s:\tWINEN =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
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reg & VRPCIU_TAW_WINEN); \
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printf("%s:\tIBA =\t0x%08x\n", (sc)->sc_dev.dv_xname, \
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VRPCIU_TAW_IBA(reg)); \
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} while (0)
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reg = vrpciu_read(sc, VRPCIU_MMAW1REG);
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DUMP_MAW(sc, "MMAW1", reg);
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reg = vrpciu_read(sc, VRPCIU_MMAW2REG);
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DUMP_MAW(sc, "MMAW2", reg);
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reg = vrpciu_read(sc, VRPCIU_TAW1REG);
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DUMP_TAW(sc, "TAW1", reg);
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reg = vrpciu_read(sc, VRPCIU_TAW2REG);
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DUMP_TAW(sc, "TAW2", reg);
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reg = vrpciu_read(sc, VRPCIU_MIOAWREG);
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DUMP_MAW(sc, "MIOAW", reg);
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printf("%s: BUSERRAD =\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_BUSERRADREG));
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printf("%s: INTCNTSTA =\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_INTCNTSTAREG));
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printf("%s: EXACC =\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_EXACCREG));
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printf("%s: RECONT =\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_RECONTREG));
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printf("%s: PCIEN =\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_ENREG));
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printf("%s: CLOCKSEL =\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_CLKSELREG));
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printf("%s: TRDYV =\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_TRDYVREG));
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printf("%s: CLKRUN =\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read_2(sc, VRPCIU_CLKRUNREG));
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printf("%s: IDREG =\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_ID_REG));
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reg = vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG);
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printf("%s: CSR =\t\t0x%08x\n", sc->sc_dev.dv_xname, reg);
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vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG, reg);
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printf("%s: CSR =\t\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG));
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printf("%s: CLASS =\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_CLASS_REG));
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printf("%s: BHLC =\t\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_BHLC_REG));
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printf("%s: MAIL =\t\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MAILREG));
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printf("%s: MBA1 =\t\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA1REG));
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printf("%s: MBA2 =\t\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA2REG));
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printf("%s: INTR =\t\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG));
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#if 0
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vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG,
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vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG) | 0x01);
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printf("%s: INTR =\t\t0x%08x\n", sc->sc_dev.dv_xname,
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vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG));
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#endif
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#endif
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pc->pc_dev = &sc->sc_dev;
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pc->pc_attach_hook = vrpciu_attach_hook;
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pc->pc_bus_maxdevs = vrpciu_bus_maxdevs;
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pc->pc_bus_devorder = vrc4173bcu_pci_bus_devorder;
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pc->pc_make_tag = vrpciu_make_tag;
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pc->pc_decompose_tag = vrpciu_decompose_tag;
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pc->pc_conf_read = vrpciu_conf_read;
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pc->pc_conf_write = vrpciu_conf_write;
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pc->pc_intr_map = vrc4173bcu_pci_intr_map;
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pc->pc_intr_string = vrc4173bcu_pci_intr_string;
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pc->pc_intr_evcnt = vrc4173bcu_pci_intr_evcnt;
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pc->pc_intr_establish = vrpciu_intr_establish;
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pc->pc_intr_disestablish = vrpciu_intr_disestablish;
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pc->pc_vrcintr_establish = vrpciu_vrcintr_establish;
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pc->pc_vrcintr_disestablish = vrpciu_vrcintr_disestablish;
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#if 0
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{
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int i;
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for (i = 0; i < 8; i++)
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printf("%s: ID_REG(0, 0, %d) = 0x%08x\n",
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sc->sc_dev.dv_xname, i,
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pci_conf_read(pc, pci_make_tag(pc, 0, 0, i),
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PCI_ID_REG));
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}
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#endif
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#if NPCI > 0
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memset(&pba, 0, sizeof(pba));
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pba.pba_busname = "pci";
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/* For now, just inherit window mappings set by WinCE. XXX. */
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pba.pba_iot = iot = hpcmips_alloc_bus_space_tag();
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reg = vrpciu_read(sc, VRPCIU_MIOAWREG);
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iot->t_base = VRPCIU_MAW_ADDR(reg);
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iot->t_size = VRPCIU_MAW_SIZE(reg);
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snprintf(iot->t_name, sizeof(iot->t_name), "%s/iot",
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sc->sc_dev.dv_xname);
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hpcmips_init_bus_space_extent(iot);
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/*
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* Just use system bus space tag. It works since WinCE maps
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* PCI bus space at same offset. But this isn't right thing
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* of course. XXX.
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*/
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pba.pba_memt = sc->sc_iot;
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pba.pba_dmat = &hpcmips_default_bus_dma_tag;
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pba.pba_bus = 0;
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pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED |
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PCI_FLAGS_MRL_OKAY;
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pba.pba_pc = pc;
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config_found(self, &pba, vrpciu_print);
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#endif
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}
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#if NPCI > 0
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static int
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vrpciu_print(void *aux, const char *pnp)
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{
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struct pcibus_attach_args *pba = aux;
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if (pnp != NULL)
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printf("%s at %s", pba->pba_busname, pnp);
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else
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printf(" bus %d", pba->pba_bus);
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return (UNCONF);
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}
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#endif
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/*
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* Handle PCI error interrupts.
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*/
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int
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vrpciu_intr(void *arg)
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{
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struct vrpciu_softc *sc = (struct vrpciu_softc *)arg;
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u_int32_t isr;
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isr = vrpciu_read(sc, VRPCIU_INTCNTSTAREG);
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printf("%s: vrpciu_intr 0x%08x\n", sc->sc_dev.dv_xname, isr);
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return ((isr & 0x0f) ? 1 : 0);
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}
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void
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vrpciu_attach_hook(struct device *parent, struct device *self,
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struct pcibus_attach_args *pba)
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{
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return;
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}
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int
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vrpciu_bus_maxdevs(pci_chipset_tag_t pc, int busno)
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{
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return (32);
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}
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pcitag_t
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vrpciu_make_tag(pci_chipset_tag_t pc, int bus, int device, int function)
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{
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return ((bus << 16) | (device << 11) | (function << 8));
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}
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void
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vrpciu_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp,
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int *fp)
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{
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if (bp != NULL)
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*bp = (tag >> 16) & 0xff;
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if (dp != NULL)
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*dp = (tag >> 11) & 0x1f;
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if (fp != NULL)
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*fp = (tag >> 8) & 0x07;
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}
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pcireg_t
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vrpciu_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg)
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{
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struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev;
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u_int32_t val;
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int bus, device, function;
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pci_decompose_tag(pc, tag, &bus, &device, &function);
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if (bus == 0) {
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if (device > 21)
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return ((pcitag_t)-1);
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tag = (1 << (device + 11)) | (function << 8); /* Type 0 */
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} else
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tag |= VRPCIU_CONF_TYPE1;
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vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg);
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val = vrpciu_read(sc, VRPCIU_CONFDREG);
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#if 0
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printf("%s: conf_read: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n",
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sc->sc_dev.dv_xname, (u_int32_t)tag, reg, val);
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#endif
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return (val);
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}
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void
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vrpciu_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg,
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pcireg_t data)
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{
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struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev;
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int bus, device, function;
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#if 0
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printf("%s: conf_write: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n",
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sc->sc_dev.dv_xname, (u_int32_t)tag, reg, (u_int32_t)data);
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#endif
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vrpciu_decompose_tag(pc, tag, &bus, &device, &function);
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if (bus == 0) {
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if (device > 21)
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return;
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tag = (1 << (device + 11)) | (function << 8); /* Type 0 */
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} else
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tag |= VRPCIU_CONF_TYPE1;
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vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg);
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vrpciu_write(sc, VRPCIU_CONFDREG, data);
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}
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void *
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vrpciu_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level,
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int (*func)(void *), void *arg)
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{
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struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev;
|
|
|
|
if (ih == -1)
|
|
return (NULL);
|
|
DPRINTF(("vrpciu_intr_establish: %p\n", sc));
|
|
return (vrc4173bcu_intr_establish(sc->sc_bcu, ih, func, arg));
|
|
}
|
|
|
|
void
|
|
vrpciu_intr_disestablish(pci_chipset_tag_t pc, void *cookie)
|
|
{
|
|
struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev;
|
|
|
|
DPRINTF(("vrpciu_intr_disestablish: %p\n", sc));
|
|
vrc4173bcu_intr_disestablish(sc->sc_bcu, cookie);
|
|
}
|
|
|
|
void *
|
|
vrpciu_vrcintr_establish(pci_chipset_tag_t pc, int port,
|
|
int (*func)(void *), void *arg)
|
|
{
|
|
struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev;
|
|
struct vrip_softc *vsc = (struct vrip_softc *)sc->sc_vc;
|
|
void *ih;
|
|
|
|
sc->sc_bcu = arg;
|
|
ih = hpcio_intr_establish(vsc->sc_gpio_chips[VRIP_IOCHIP_VRGIU],
|
|
port, HPCIO_INTR_LEVEL | HPCIO_INTR_LOW | HPCIO_INTR_HOLD,
|
|
func, arg);
|
|
|
|
return (ih);
|
|
}
|
|
|
|
void
|
|
vrpciu_vrcintr_disestablish(pci_chipset_tag_t pc, void *ih)
|
|
{
|
|
struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev;
|
|
struct vrip_softc *vsc = (struct vrip_softc *)sc->sc_vc;
|
|
|
|
return (vrip_intr_disestablish(vsc->sc_gpio_chips[VRIP_IOCHIP_VRGIU],
|
|
ih));
|
|
}
|