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NetBSD/sys/arch/hpcmips/vr/vrc4172pci.c

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/* $NetBSD: vrc4172pci.c,v 1.3 2002/05/03 11:37:49 takemura Exp $ */
/*-
* Copyright (c) 2002 TAKEMURA Shin
* All rights reserved.
*
* 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. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/bus_space_hpcmips.h>
#include <machine/bus_dma_hpcmips.h>
#include <machine/config_hook.h>
#include <machine/platid.h>
#include <machine/platid_mask.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/pciidereg.h>
#include <hpcmips/vr/icureg.h>
#include <hpcmips/vr/vripif.h>
#include <hpcmips/vr/vrc4172pcireg.h>
#include "pci.h"
#include "opt_vrc4172pci.h"
#ifdef DEBUG
#define DPRINTF(args) printf args
#else
#define DPRINTF(args) while (0) {}
#endif
struct vrc4172pci_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
struct hpcmips_pci_chipset sc_pc;
#ifdef VRC4172PCI_MCR700_SUPPORT
pcireg_t sc_fake_baseaddr;
hpcio_chip_t sc_iochip;
#if 0
hpcio_intr_handle_t sc_ih;
#endif
#endif /* VRC4172PCI_MCR700_SUPPORT */
};
static int vrc4172pci_match(struct device *, struct cfdata *, void *);
static void vrc4172pci_attach(struct device *, struct device *, void *);
#if NPCI > 0
static int vrc4172pci_print(void *, const char *);
#endif
static void vrc4172pci_attach_hook(struct device *, struct device *,
struct pcibus_attach_args *);
static int vrc4172pci_bus_maxdevs(pci_chipset_tag_t, int);
static int vrc4172pci_bus_devorder(pci_chipset_tag_t, int, char *);
static pcitag_t vrc4172pci_make_tag(pci_chipset_tag_t, int, int, int);
static void vrc4172pci_decompose_tag(pci_chipset_tag_t, pcitag_t, int *,
int *, int *);
static pcireg_t vrc4172pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
static void vrc4172pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
pcireg_t);
static int vrc4172pci_intr_map(struct pci_attach_args *,
pci_intr_handle_t *);
static const char *vrc4172pci_intr_string(pci_chipset_tag_t,pci_intr_handle_t);
static const struct evcnt *vrc4172pci_intr_evcnt(pci_chipset_tag_t,
pci_intr_handle_t);
static void *vrc4172pci_intr_establish(pci_chipset_tag_t,
pci_intr_handle_t, int, int (*)(void *), void *);
static void vrc4172pci_intr_disestablish(pci_chipset_tag_t, void *);
#ifdef VRC4172PCI_MCR700_SUPPORT
#if 0
static int vrc4172pci_mcr700_intr(void *arg);
#endif
#endif
struct cfattach vrc4172pci_ca = {
sizeof(struct vrc4172pci_softc), vrc4172pci_match, vrc4172pci_attach
};
static inline void
vrc4172pci_write(struct vrc4172pci_softc *sc, int offset, u_int32_t val)
{
bus_space_write_4(sc->sc_iot, sc->sc_ioh, offset, val);
}
static inline u_int32_t
vrc4172pci_read(struct vrc4172pci_softc *sc, int offset)
{
u_int32_t res;
if (bus_space_peek(sc->sc_iot, sc->sc_ioh, offset, 4, &res) < 0) {
res = 0xffffffff;
}
return (res);
}
static int
vrc4172pci_match(struct device *parent, struct cfdata *match, void *aux)
{
return (1);
}
static void
vrc4172pci_attach(struct device *parent, struct device *self, void *aux)
{
struct vrc4172pci_softc *sc = (struct vrc4172pci_softc *)self;
pci_chipset_tag_t pc = &sc->sc_pc;
struct vrip_attach_args *va = aux;
#if NPCI > 0
struct pcibus_attach_args pba;
#endif
sc->sc_iot = va->va_iot;
if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 0,
&sc->sc_ioh)) {
printf(": couldn't map io space\n");
return;
}
printf("\n");
#ifdef VRC4172PCI_MCR700_SUPPORT
if (platid_match(&platid, &platid_mask_MACH_NEC_MCR_700)) {
/* power USB controller on MC-R700 */
sc->sc_iochip = va->va_gpio_chips[VRIP_IOCHIP_VRGIU];
hpcio_portwrite(sc->sc_iochip, 45, 1);
sc->sc_fake_baseaddr = 0x0afe0000;
#if 0
sc->sc_ih = hpcio_intr_establish(sc->sc_iochip, 1,
HPCIO_INTR_EDGE|HPCIO_INTR_HOLD,
vrc4172pci_mcr700_intr, sc);
#endif
}
#endif /* VRC4172PCI_MCR700_SUPPORT */
pc->pc_dev = &sc->sc_dev;
pc->pc_attach_hook = vrc4172pci_attach_hook;
pc->pc_bus_maxdevs = vrc4172pci_bus_maxdevs;
pc->pc_bus_devorder = vrc4172pci_bus_devorder;
pc->pc_make_tag = vrc4172pci_make_tag;
pc->pc_decompose_tag = vrc4172pci_decompose_tag;
pc->pc_conf_read = vrc4172pci_conf_read;
pc->pc_conf_write = vrc4172pci_conf_write;
pc->pc_intr_map = vrc4172pci_intr_map;
pc->pc_intr_string = vrc4172pci_intr_string;
pc->pc_intr_evcnt = vrc4172pci_intr_evcnt;
pc->pc_intr_establish = vrc4172pci_intr_establish;
pc->pc_intr_disestablish = vrc4172pci_intr_disestablish;
#if 0
{
int i;
for (i = 0; i < 2; i++)
printf("%s: ID_REG(0, 0, %d) = 0x%08x\n",
sc->sc_dev.dv_xname, i,
pci_conf_read(pc, pci_make_tag(pc, 0, 0, i),
PCI_ID_REG));
}
#endif
#if NPCI > 0
memset(&pba, 0, sizeof(pba));
pba.pba_busname = "pci";
pba.pba_iot = sc->sc_iot;
pba.pba_memt = sc->sc_iot;
pba.pba_dmat = &hpcmips_default_bus_dma_tag.bdt;
pba.pba_bus = 0;
pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED |
PCI_FLAGS_MRL_OKAY;
pba.pba_pc = pc;
config_found(self, &pba, vrc4172pci_print);
#endif
}
#if NPCI > 0
static int
vrc4172pci_print(void *aux, const char *pnp)
{
struct pcibus_attach_args *pba = aux;
if (pnp != NULL)
printf("%s at %s", pba->pba_busname, pnp);
else
printf(" bus %d", pba->pba_bus);
return (UNCONF);
}
#endif
void
vrc4172pci_attach_hook(struct device *parent, struct device *self,
struct pcibus_attach_args *pba)
{
return;
}
int
vrc4172pci_bus_maxdevs(pci_chipset_tag_t pc, int busno)
{
return (1); /* Vrc4172 has only one device */
}
int
vrc4172pci_bus_devorder(pci_chipset_tag_t pc, int busno, char *devs)
{
int i;
*devs++ = 0;
for (i = 1; i < 32; i++)
*devs++ = -1;
return (1);
}
pcitag_t
vrc4172pci_make_tag(pci_chipset_tag_t pc, int bus, int device, int function)
{
return ((bus << 16) | (device << 11) | (function << 8));
}
void
vrc4172pci_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp,
int *fp)
{
if (bp != NULL)
*bp = (tag >> 16) & 0xff;
if (dp != NULL)
*dp = (tag >> 11) & 0x1f;
if (fp != NULL)
*fp = (tag >> 8) & 0x07;
}
pcireg_t
vrc4172pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg)
{
struct vrc4172pci_softc *sc = (struct vrc4172pci_softc *)pc->pc_dev;
u_int32_t val;
#ifdef VRC4172PCI_MCR700_SUPPORT
if (sc->sc_fake_baseaddr != 0 &&
tag == vrc4172pci_make_tag(pc, 0, 0, 1) &&
reg == PCI_MAPREG_START) {
val = sc->sc_fake_baseaddr;
goto out;
}
#endif /* VRC4172PCI_MCR700_SUPPORT */
tag |= VRC4172PCI_CONFADDR_CONFIGEN;
vrc4172pci_write(sc, VRC4172PCI_CONFAREG, tag | reg);
val = vrc4172pci_read(sc, VRC4172PCI_CONFDREG);
#ifdef VRC4172PCI_MCR700_SUPPORT
out:
#endif
DPRINTF(("%s: conf_read: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n",
sc->sc_dev.dv_xname, (u_int32_t)tag, reg, val));
return (val);
}
void
vrc4172pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg,
pcireg_t data)
{
struct vrc4172pci_softc *sc = (struct vrc4172pci_softc *)pc->pc_dev;
DPRINTF(("%s: conf_write: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n",
sc->sc_dev.dv_xname, (u_int32_t)tag, reg, (u_int32_t)data));
#ifdef VRC4172PCI_MCR700_SUPPORT
if (sc->sc_fake_baseaddr != 0 &&
tag == vrc4172pci_make_tag(pc, 0, 0, 1) &&
reg == PCI_MAPREG_START) {
sc->sc_fake_baseaddr = (data & 0xfffff000);
return;
}
#endif /* VRC4172PCI_MCR700_SUPPORT */
tag |= VRC4172PCI_CONFADDR_CONFIGEN;
vrc4172pci_write(sc, VRC4172PCI_CONFAREG, tag | reg);
vrc4172pci_write(sc, VRC4172PCI_CONFDREG, data);
}
int
vrc4172pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
{
pci_chipset_tag_t pc = pa->pa_pc;
pcitag_t intrtag = pa->pa_intrtag;
int bus, dev, func;
pci_decompose_tag(pc, intrtag, &bus, &dev, &func);
DPRINTF(("%s(%d, %d, %d): line = %d, pin = %d\n", pc->pc_dev->dv_xname,
bus, dev, func, pa->pa_intrline, pa->pa_intrpin));
*ihp = CONFIG_HOOK_PCIINTR_ID(bus, dev, func);
return (0);
}
const char *
vrc4172pci_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih)
{
static char irqstr[sizeof("pciintr") + 16];
snprintf(irqstr, sizeof(irqstr), "pciintr %d:%d:%d",
CONFIG_HOOK_PCIINTR_BUS((int)ih),
CONFIG_HOOK_PCIINTR_DEVICE((int)ih),
CONFIG_HOOK_PCIINTR_FUNCTION((int)ih));
return (irqstr);
}
const struct evcnt *
vrc4172pci_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih)
{
return (NULL);
}
void *
vrc4172pci_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih,
int level, int (*func)(void *), void *arg)
{
if (ih == -1)
return (NULL);
DPRINTF(("vrc4172pci_intr_establish: %lx\n", ih));
return (config_hook(CONFIG_HOOK_PCIINTR, ih, CONFIG_HOOK_EXCLUSIVE,
(int (*)(void *, int, long, void *))func, arg));
}
void
vrc4172pci_intr_disestablish(pci_chipset_tag_t pc, void *cookie)
{
DPRINTF(("vrc4172pci_intr_disestablish: %p\n", cookie));
config_unhook(cookie);
}
#ifdef VRC4172PCI_MCR700_SUPPORT
#if 0
int
vrc4172pci_mcr700_intr(void *arg)
{
struct vrc4172pci_softc *sc = arg;
hpcio_intr_clear(sc->sc_iochip, sc->sc_ih);
printf("USB port %s\n", hpcio_portread(sc->sc_iochip, 1) ? "ON" : "OFF");
hpcio_portwrite(sc->sc_iochip, 45, hpcio_portread(sc->sc_iochip, 1));
return (0);
}
#endif
#endif /* VRC4172PCI_MCR700_SUPPORT */
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