NetBSD/sys/arch/atari/pci/pci_machdep.c

219 lines
5.0 KiB
C

/* $NetBSD: pci_machdep.c,v 1.7 1997/04/10 23:12:20 cgd Exp $ */
/*
* Copyright (c) 1996 Leo Weppelman. All rights reserved.
* Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved.
* Copyright (c) 1994 Charles Hannum. 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/types.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <vm/vm.h>
#include <vm/vm_kern.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <machine/cpu.h>
#include <machine/iomap.h>
#include <atari/atari/device.h>
int pcibusprint __P((void *auxp, const char *));
int pcibusmatch __P((struct device *, struct cfdata *, void *));
void pcibusattach __P((struct device *, struct device *, void *));
static int pci_config_offset __P((pcitag_t));
/*
* Swap a long (abcd -> dcba). The pci-config area has the wrong
* endianess....
*/
#define swapl(x) \
{ asm volatile ("rorw #8,%0\nswap %0\nrorw #8,%0" : : "r" (x)); }
struct cfattach pcibus_ca = {
sizeof(struct device), pcibusmatch, pcibusattach
};
struct cfdriver pcibus_cd = {
NULL, "pcibus", DV_DULL
};
int
pcibusmatch(pdp, cfp, auxp)
struct device *pdp;
struct cfdata *cfp;
void *auxp;
{
if(atari_realconfig == 0)
return (0);
if (strcmp((char *)auxp, "pcibus") || cfp->cf_unit != 0)
return(0);
return(machineid & ATARI_HADES ? 1 : 0);
}
void
pcibusattach(pdp, dp, auxp)
struct device *pdp, *dp;
void *auxp;
{
struct pcibus_attach_args pba;
pba.pba_busname = "pci";
pba.pba_pc = NULL;
pba.pba_bus = 0;
pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED;
printf("\n");
config_found(dp, &pba, pcibusprint);
}
int
pcibusprint(auxp, name)
void *auxp;
const char *name;
{
if(name == NULL)
return(UNCONF);
return(QUIET);
}
void
pci_attach_hook(parent, self, pba)
struct device *parent, *self;
struct pcibus_attach_args *pba;
{
}
/*
* Atari_init.c maps the config areas NBPG bytes apart....
*/
static int pci_config_offset(tag)
pcitag_t tag;
{
int device;
device = (tag >> 11) & 0x1f;
return(device * NBPG);
}
int
pci_bus_maxdevs(pc, busno)
pci_chipset_tag_t pc;
int busno;
{
return (4);
}
pcitag_t
pci_make_tag(pc, bus, device, function)
pci_chipset_tag_t pc;
int bus, device, function;
{
return ((bus << 16) | (device << 11) | (function << 8));
}
pcireg_t
pci_conf_read(pc, tag, reg)
pci_chipset_tag_t pc;
pcitag_t tag;
int reg;
{
u_long data;
data = *(u_long *)(pci_conf_addr + pci_config_offset(tag) + reg);
swapl(data);
return(data);
}
void
pci_conf_write(pc, tag, reg, data)
pci_chipset_tag_t pc;
pcitag_t tag;
int reg;
pcireg_t data;
{
swapl(data);
*((u_long *)(pci_conf_addr + pci_config_offset(tag) + reg)) = data;
}
/*
* XXX: All pci_intr_*() functions are no-op's for now...
*/
int
pci_intr_map(pc, intrtag, pin, line, ihp)
pci_chipset_tag_t pc;
pcitag_t intrtag;
int pin, line;
pci_intr_handle_t *ihp;
{
/* XXXXXXXXX */
*ihp = -1;
return 1;
}
const char *
pci_intr_string(pc, ih)
pci_chipset_tag_t pc;
pci_intr_handle_t ih;
{
static char irqstr[8]; /* 4 + 2 + NULL + sanity */
if (ih == 0)
panic("pci_intr_string: bogus handle 0x%x\n", ih);
sprintf(irqstr, "irq %d", ih);
return (irqstr);
}
void *
pci_intr_establish(pc, ih, level, func, arg)
pci_chipset_tag_t pc;
pci_intr_handle_t ih;
int level, (*func) __P((void *));
void *arg;
{
/* XXXX */
return NULL;
}
void
pci_intr_disestablish(pc, cookie)
pci_chipset_tag_t pc;
void *cookie;
{
/* XXXX */
}