7b7f33c4c3
chipsets. An example of this is the USB controller on these chipsets. With this, I can now use USB devices on the test Alpha I am borrowing at the moment. Reviewed by: dfr, obrien
177 lines
5.2 KiB
C
177 lines
5.2 KiB
C
/*-
|
|
* Copyright (c) 1999 Andrew Gallatin
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/bus.h>
|
|
#include <machine/bus.h>
|
|
#include <machine/md_var.h>
|
|
#include <sys/rman.h>
|
|
#include <pci/pcivar.h>
|
|
#include <alpha/pci/tsunamireg.h>
|
|
#include <alpha/pci/tsunamivar.h>
|
|
|
|
|
|
static devclass_t pcib_devclass;
|
|
|
|
int tsunami_hoses[TSUNAMI_MAXHOSES+1] = {1,-1,-1,-1,-1};
|
|
|
|
int tsunami_maxhoseno = 0;
|
|
|
|
extern int tsunami_num_pchips;
|
|
|
|
/*
|
|
* This comment attempts to explain why and how we are mapping from
|
|
* the DEQ assigned bus numbers to the FreeBSD assigned numbers.
|
|
*
|
|
* FreeBSD must number buses with monotonically increasing numbers for a
|
|
* variety of reasons (pciconf, newbus, etc).
|
|
*
|
|
* DEQ numbers them (from what I can tell) on a per-hose bases. And
|
|
* for some reason they seem to always leave bus 1 unused.
|
|
*
|
|
* When generating config space addrs, we need to know if we are
|
|
* directly on the primary bus on that hose, or if we are behind a ppb.
|
|
* We keep track of this by assigning hoses monotonically increasing
|
|
* numbers. This fits nicely with DEQ not using bus number 1; I
|
|
* assume that is what it as intended for. I guess we'll see if they
|
|
* come out with a system using more than one pchip..
|
|
*
|
|
* Next, we must attempt to map the FreeBSD assigned numbers to the
|
|
* numbers assigned by DEQ in order to generate proper config space
|
|
* addrs. We store the next number past the 0th bus of our hose and
|
|
* do subtraction to determine what the DEQ number should have been,
|
|
* given a FreeBSD bus number. This is disgusting & quite possibly
|
|
* wrong.
|
|
*/
|
|
|
|
int
|
|
tsunami_bus_within_hose(int hose, int bus)
|
|
{
|
|
if (hose == bus)
|
|
return 0;
|
|
else
|
|
return ( (bus - tsunami_hoses[hose]) + 1);
|
|
}
|
|
|
|
/*
|
|
* this function supports pciconf ioctls
|
|
*/
|
|
|
|
int
|
|
tsunami_hose_from_bus(int bus)
|
|
{
|
|
int i;
|
|
|
|
if (bus < tsunami_maxhoseno)
|
|
return bus;
|
|
|
|
for (i = 1; i <= TSUNAMI_MAXHOSES && tsunami_hoses[i] != -1; i++){
|
|
if(tsunami_hoses[i] >= bus)
|
|
return i-1;
|
|
}
|
|
|
|
return i-1;
|
|
}
|
|
|
|
|
|
static int
|
|
tsunami_pcib_probe(device_t dev)
|
|
{
|
|
static int error;
|
|
device_t child;
|
|
int lastbus;
|
|
|
|
device_set_desc(dev, "21271 PCI host bus adapter");
|
|
|
|
child = device_add_child(dev, "pci", -1);
|
|
|
|
if (tsunami_maxhoseno) {
|
|
lastbus = (device_get_unit(child) - 1);
|
|
if (lastbus == 0) /* didn't have a ppb on hose 0 */
|
|
lastbus++;
|
|
tsunami_hoses[tsunami_maxhoseno] = lastbus;
|
|
}
|
|
if ((error = device_delete_child(dev, child)))
|
|
panic("tsunami_pcib_probe: device_delete_child failed\n");
|
|
|
|
child = device_add_child(dev, "pci", tsunami_maxhoseno);
|
|
|
|
if (tsunami_maxhoseno != device_get_unit(child)) {
|
|
printf("tsunami_pcib_probe: wanted unit %d ",
|
|
tsunami_maxhoseno);
|
|
printf(" got unit %d\n", device_get_unit(child));
|
|
panic("tsunami_pcib_probe: incorrect bus numbering");
|
|
}
|
|
tsunami_maxhoseno++;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
tsunami_pcib_read_ivar(device_t dev, device_t child, int which, u_long *result)
|
|
{
|
|
if (which == PCIB_IVAR_HOSE) {
|
|
*result = *(int*) device_get_ivars(dev);
|
|
return 0;
|
|
}
|
|
return ENOENT;
|
|
}
|
|
|
|
static device_method_t tsunami_pcib_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, tsunami_pcib_probe),
|
|
DEVMETHOD(device_attach, bus_generic_attach),
|
|
|
|
/* Bus interface */
|
|
DEVMETHOD(bus_print_child, bus_generic_print_child),
|
|
DEVMETHOD(bus_read_ivar, tsunami_pcib_read_ivar),
|
|
DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
|
|
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
|
|
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
|
|
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
|
|
DEVMETHOD(bus_setup_intr, alpha_platform_pci_setup_intr),
|
|
DEVMETHOD(bus_teardown_intr, alpha_platform_pci_teardown_intr),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
|
|
static driver_t tsunami_pcib_driver = {
|
|
"pcib",
|
|
tsunami_pcib_methods,
|
|
1,
|
|
};
|
|
|
|
|
|
DRIVER_MODULE(pcib, tsunami, tsunami_pcib_driver, pcib_devclass, 0, 0);
|
|
|
|
|