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/* $OpenBSD: socpcic.c,v 1.3 2009/03/30 20:09:50 kettenis Exp $ */
/*
* Copyright (c) 2008 Mark Kettenis
*
* 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 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.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/autoconf.h>
#include <machine/bus.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
struct socpcic_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_cfg_ioh;
struct ppc_bus_space sc_mem_bus_space;
struct ppc_bus_space sc_io_bus_space;
struct ppc_pci_chipset sc_pc;
};
int socpcic_match(struct device *, void *, void *);
void socpcic_attach(struct device *, struct device *, void *);
struct cfattach socpcic_ca = {
sizeof(struct socpcic_softc), socpcic_match, socpcic_attach
};
struct cfdriver socpcic_cd = {
NULL, "socpcic", DV_DULL
};
void socpcic_attach_hook(struct device *, struct device *,
struct pcibus_attach_args *);
int socpcic_bus_maxdevs(void *, int);
pcitag_t socpcic_make_tag(void *, int, int, int);
void socpcic_decompose_tag(void *, pcitag_t, int *, int *, int *);
pcireg_t socpcic_conf_read(void *, pcitag_t, int);
void socpcic_conf_write(void *, pcitag_t, int, pcireg_t);
int socpcic_intr_map(void *, pcitag_t, int, int, pci_intr_handle_t *);
const char *socpcic_intr_string(void *, pci_intr_handle_t);
int socpcic_intr_line(void *, pci_intr_handle_t);
void *socpcic_intr_establish(void *, pci_intr_handle_t, int,
int (*)(void *), void *, char *);
void socpcic_intr_disestablish(void *, void *);
int socpcic_ether_hw_addr(struct ppc_pci_chipset *, u_int8_t *);
int socpcic_print(void *, const char *);
int
socpcic_match(struct device *parent, void *cfdata, void *aux)
{
return (1);
}
void
socpcic_attach(struct device *parent, struct device *self, void *aux)
{
struct socpcic_softc *sc = (void *)self;
struct obio_attach_args *oa = aux;
struct pcibus_attach_args pba;
sc->sc_iot = oa->oa_iot;
if (bus_space_map(sc->sc_iot, oa->oa_offset, 16, 0, &sc->sc_cfg_ioh)) {
printf(": can't map configuration registers\n");
return;
}
sc->sc_io_bus_space.bus_base = 0xe2000000;
sc->sc_io_bus_space.bus_size = 0x01000000;
sc->sc_pc.pc_conf_v = sc;
sc->sc_pc.pc_attach_hook = socpcic_attach_hook;
sc->sc_pc.pc_bus_maxdevs = socpcic_bus_maxdevs;
sc->sc_pc.pc_make_tag = socpcic_make_tag;
sc->sc_pc.pc_decompose_tag = socpcic_decompose_tag;
sc->sc_pc.pc_conf_read = socpcic_conf_read;
sc->sc_pc.pc_conf_write = socpcic_conf_write;
sc->sc_pc.pc_intr_v = sc;
sc->sc_pc.pc_intr_map = socpcic_intr_map;
sc->sc_pc.pc_intr_string = socpcic_intr_string;
sc->sc_pc.pc_intr_line = socpcic_intr_line;
sc->sc_pc.pc_intr_establish = socpcic_intr_establish;
sc->sc_pc.pc_intr_disestablish = socpcic_intr_disestablish;
sc->sc_pc.pc_ether_hw_addr = socpcic_ether_hw_addr;
bzero(&pba, sizeof(pba));
pba.pba_busname = "pci";
pba.pba_iot = &sc->sc_io_bus_space;
pba.pba_memt = &sc->sc_mem_bus_space;
pba.pba_dmat = oa->oa_dmat;
pba.pba_pc = &sc->sc_pc;
pba.pba_domain = pci_ndomains++;
pba.pba_bus = 0;
printf("\n");
config_found(self, &pba, socpcic_print);
}
void
socpcic_attach_hook(struct device *parent, struct device *self,
struct pcibus_attach_args *pba)
{
}
int
socpcic_bus_maxdevs(void *cpv, int bus)
{
return (32);
}
pcitag_t
socpcic_make_tag(void *cpv, int bus, int dev, int fun)
{
return ((bus << 16) | (dev << 11) | (fun << 8));
}
void
socpcic_decompose_tag(void *cpv, pcitag_t tag, int *busp, int *devp, int *funp)
{
if (busp)
*busp = (tag >> 16) & 0xff;
if (devp)
*devp = (tag >> 11) & 0x1f;
if (funp)
*funp = (tag >> 8) & 0x7;
}
pcireg_t
socpcic_conf_read(void *cpv, pcitag_t tag, int offset)
{
struct socpcic_softc *sc = cpv;
int bus, dev, fun;
pcireg_t addr, data;
socpcic_decompose_tag(sc, tag, &bus, &dev, &fun);
if (bus == 0) {
if (dev > 0 && dev < 11)
return (0xffffffff);
if (dev == 31)
tag = (10 << 11) | (fun << 8);
}
addr = 0x80000000 | tag | offset;
bus_space_write_4(sc->sc_iot, sc->sc_cfg_ioh, 0, addr);
bus_space_read_4(sc->sc_iot, sc->sc_cfg_ioh, 0);
data = bus_space_read_4(sc->sc_iot, sc->sc_cfg_ioh, 4);
bus_space_write_4(sc->sc_iot, sc->sc_cfg_ioh, 0, 0);
bus_space_read_4(sc->sc_iot, sc->sc_cfg_ioh, 0);
return (data);
}
void
socpcic_conf_write(void *cpv, pcitag_t tag, int offset, pcireg_t data)
{
struct socpcic_softc *sc = cpv;
int bus, dev, fun;
pcireg_t addr;
socpcic_decompose_tag(sc, tag, &bus, &dev, &fun);
if (bus == 0) {
if (dev > 0 && dev < 11)
return;
if (dev == 31)
tag = (10 << 11) | (fun << 8);
}
addr = 0x80000000 | tag | offset;
bus_space_write_4(sc->sc_iot, sc->sc_cfg_ioh, 0, addr);
bus_space_read_4(sc->sc_iot, sc->sc_cfg_ioh, 0);
bus_space_write_4(sc->sc_iot, sc->sc_cfg_ioh, 4, data);
bus_space_write_4(sc->sc_iot, sc->sc_cfg_ioh, 0, 0);
bus_space_read_4(sc->sc_iot, sc->sc_cfg_ioh, 0);
}
int
socpcic_intr_map(void *cpv, pcitag_t tag, int pin, int line,
pci_intr_handle_t *ihp)
{
*ihp = 20; /* XXX */
return (0);
}
const char *
socpcic_intr_string(void *cpv, pci_intr_handle_t ih)
{
static char str[16];
snprintf(str, sizeof str, "ivec %ld", ih);
return (str);
}
int
socpcic_intr_line(void *cpv, pci_intr_handle_t ih)
{
return (ih);
}
void *
socpcic_intr_establish(void *cpv, pci_intr_handle_t ih, int level,
int (*func)(void *), void *arg, char *name)
{
return (intr_establish(ih, IST_LEVEL, level, func, arg, name));
}
void
socpcic_intr_disestablish(void *lcv, void *cookie)
{
}
int
socpcic_ether_hw_addr(struct ppc_pci_chipset *lcpc, u_int8_t *oaddr)
{
oaddr[0] = oaddr[1] = oaddr[2] = 0xff;
oaddr[3] = oaddr[4] = oaddr[5] = 0xff;
return (0);
}
int
socpcic_print(void *aux, const char *pnp)
{
struct pcibus_attach_args *pba = aux;
if (pnp)
printf("%s at %s", pba->pba_busname, pnp);
printf(" bus %d", pba->pba_bus);
return (UNCONF);
}
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