NetBSD-5.0.2/sys/arch/macppc/pci/u3.c
/* $NetBSD: u3.c,v 1.2 2007/10/17 19:55:35 garbled Exp $ */
/*
* Copyright 2006 Kyma Systems LLC.
* All rights reserved.
*
* Written by Sanjay Lal <sanjayl@kymasys.com>
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Kyma Systems LLC.
* 4. The name of Kyma Systems LLC may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY KYMA SYSTEMS LLC ``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 KYMA SYSTEMS LLC
* 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/cdefs.h>
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <dev/pci/pcivar.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_pci.h>
#include <machine/autoconf.h>
struct ibmcpc_softc
{
struct device sc_dev;
struct genppc_pci_chipset sc_pc[8];
struct powerpc_bus_space sc_iot;
struct powerpc_bus_space sc_memt;
};
static void ibmcpc_attach(struct device *, struct device *, void *);
static int ibmcpc_match(struct device *, struct cfdata *, void *);
static pcireg_t ibmcpc_conf_read(void *, pcitag_t, int);
static void ibmcpc_conf_write(void *, pcitag_t, int, pcireg_t);
CFATTACH_DECL(ibmcpc, sizeof(struct ibmcpc_softc),
ibmcpc_match, ibmcpc_attach, NULL, NULL);
#define PCI_DEVFN(slot,func) ((((slot) & 0x1f) << 3) | ((func) & 0x07))
static int
ibmcpc_match(struct device *parent, struct cfdata *cf, void *aux)
{
struct confargs *ca = aux;
char compat[32];
if (strcmp(ca->ca_name, "ht") != 0)
return 0;
memset(compat, 0, sizeof(compat));
OF_getprop(ca->ca_node, "compatible", compat, sizeof(compat));
if (strcmp(compat, "u3-ht") != 0)
return 0;
return 1;
}
static void
ibmcpc_attach(struct device *parent, struct device *self, void *aux)
{
struct ibmcpc_softc *sc = (void *) self;
pci_chipset_tag_t pc = sc->sc_pc;
struct confargs *ca = aux;
struct pcibus_attach_args pba;
int node = ca->ca_node, child;
uint32_t reg[6], busrange[2], i;
void *pc_data;
char name[32];
aprint_normal("\n");
/* u3 address */
if (OF_getprop(node, "reg", reg, sizeof(reg)) < 24) {
return;
}
aprint_normal("Mapping in config space @ pa 0x%08x, size: 0x%08x\n",
reg[1], reg[2]);
pc_data = mapiodev(reg[1], reg[2]);
for (child = OF_child(OF_finddevice("/ht")), i = 1; child;
child = OF_peer(child), i++) {
memset(name, 0, sizeof(name));
if (OF_getprop(child, "name", name, sizeof(name)) == -1)
continue;
if (strcmp(name, "pci") != 0)
continue;
if (OF_getprop(child, "bus-range", busrange, 8) < 8)
continue;
sc->sc_iot.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN |
_BUS_SPACE_IO_TYPE;
sc->sc_iot.pbs_base = 0x00000000;
if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_IO, child,
&sc->sc_iot, "ibmcpc io") != 0)
panic("Can't init ibmcpc io tag");
sc->sc_memt.pbs_flags = _BUS_SPACE_LITTLE_ENDIAN |
_BUS_SPACE_MEM_TYPE;
sc->sc_memt.pbs_base = 0x00000000;
if (ofwoea_map_space(RANGE_TYPE_PCI, RANGE_MEM, child,
&sc->sc_memt, "ibmcpc mem") != 0)
panic("Can't init ibmcpc mem tag");
macppc_pci_get_chipset_tag(pc);
pc->pc_node = child;
pc->pc_bus = busrange[0];
pc->pc_addr = 0x0;
pc->pc_data = pc_data;
pc->pc_conf_read = ibmcpc_conf_read;
pc->pc_conf_write = ibmcpc_conf_write;
pc->pc_memt = &sc->sc_memt;
pc->pc_iot = &sc->sc_iot;
memset(&pba, 0, sizeof(pba));
pba.pba_memt = pc->pc_memt;
pba.pba_iot = pc->pc_iot;
pba.pba_dmat = &pci_bus_dma_tag;
pba.pba_dmat64 = NULL;
pba.pba_bridgetag = NULL;
pba.pba_pc = pc;
pba.pba_bus = pc->pc_bus;
pba.pba_flags = PCI_FLAGS_MEM_ENABLED | PCI_FLAGS_IO_ENABLED;
config_found_ia(self, "pcibus", &pba, pcibusprint);
pc++;
}
}
static pcireg_t
ibmcpc_conf_read(void *cookie, pcitag_t tag, int reg)
{
pci_chipset_tag_t pc = cookie;
u_int32_t daddr = (u_int32_t) pc->pc_data;
pcireg_t data;
u_int32_t bus, dev, func, x, devfn;
pci_decompose_tag(pc, tag, &bus, &dev, &func);
devfn = PCI_DEVFN(dev, func);
if (bus == 0) {
if (devfn == 0x0) {
data = 0xffffffff;
goto done;
}
x = daddr + ((devfn << 8) | reg);
} else
x = daddr + ((devfn << 8) | reg) + (bus << 16) + 0x01000000UL;
data = in32rb(x);
done:
return data;
}
static void
ibmcpc_conf_write(void *cookie, pcitag_t tag, int reg, pcireg_t data)
{
pci_chipset_tag_t pc = cookie;
int32_t *daddr = pc->pc_data;
u_int32_t bus, dev, func;
u_int32_t x, devfn;
pci_decompose_tag(pc, tag, &bus, &dev, &func);
devfn = PCI_DEVFN(dev, func);
if (bus == 0) {
if (devfn == 0x0) {
goto done;
}
x = (u_int32_t) daddr + ((devfn << 8) | reg);
} else
x = (u_int32_t) daddr + ((devfn << 8) | reg) + (bus << 16) +
0x01000000UL;
out32rb(x, data);
done:
return;
}