b730263346
- Implement bus_adjust_resource() methods as far as necessary and in non-PCI bridge drivers as far as feasible without rototilling them. - As NEW_PCIB does a layering violation by activating resources at layers above pci(4) without previously bubbling up their allocation there, move the assignment of bus tags and handles from the bus_alloc_resource() to the bus_activate_resource() methods like at least the other NEW_PCIB enabled architectures do. This is somewhat unfortunate as previously sparc64 (ab)used resource activation to indicate whether SYS_RES_MEMORY resources should be mapped into KVA, which is only necessary if their going to be accessed via the pointer returned from rman_get_virtual() but not for bus_space(9) as the later always uses physical access on sparc64. Besides wasting KVA if we always map in SYS_RES_MEMORY resources, a driver also may deliberately not map them in if the firmware already has done so, possibly in a special way. So in order to still allow a driver to decide whether a SYS_RES_MEMORY resource should be mapped into KVA we let it indicate that by calling bus_space_map(9) with BUS_SPACE_MAP_LINEAR as actually documented in the bus_space(9) page. This is implemented by allocating a separate bus tag per SYS_RES_MEMORY resource and passing the resource via the previously unused bus tag cookie so we later on can call rman_set_virtual() in sparc64_bus_mem_map(). As a side effect this now also allows to actually indicate that a SYS_RES_MEMORY resource should be mapped in as cacheable and/or read-only via BUS_SPACE_MAP_CACHEABLE and BUS_SPACE_MAP_READONLY respectively. - Do some minor cleanup like taking advantage of rman_init_from_resource(), factor out the common part of bus tag allocation into a newly added sparc64_alloc_bus_tag(), hook up some missing newbus methods and replace some homegrown versions with the generic counterparts etc. - While at it, let apb_attach() (which can't use the generic NEW_PCIB code as APB bridges just don't have the base and limit registers implemented) regarding the config space registers cached in pcib_softc and the SYSCTL reporting nodes set up.
109 lines
3.3 KiB
C
109 lines
3.3 KiB
C
/*-
|
|
* Copyright (c) 2003 by Thomas Moestl <tmm@FreeBSD.org>
|
|
* 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 ``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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_ofw_pci.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/rman.h>
|
|
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/ofw_pci.h>
|
|
#include <dev/ofw/openfirm.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/pci/pcireg.h>
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pcib_private.h>
|
|
|
|
#include "pcib_if.h"
|
|
|
|
#include <sparc64/pci/ofw_pci.h>
|
|
#include <sparc64/pci/ofw_pcib_subr.h>
|
|
|
|
void
|
|
ofw_pcib_gen_setup(device_t bridge)
|
|
{
|
|
struct ofw_pcib_gen_softc *sc;
|
|
|
|
sc = device_get_softc(bridge);
|
|
sc->ops_pcib_sc.dev = bridge;
|
|
sc->ops_node = ofw_bus_get_node(bridge);
|
|
KASSERT(sc->ops_node != 0,
|
|
("ofw_pcib_gen_setup: no ofw pci parent bus!"));
|
|
|
|
ofw_bus_setup_iinfo(sc->ops_node, &sc->ops_iinfo,
|
|
sizeof(ofw_pci_intr_t));
|
|
}
|
|
|
|
int
|
|
ofw_pcib_gen_route_interrupt(device_t bridge, device_t dev, int intpin)
|
|
{
|
|
struct ofw_pcib_gen_softc *sc;
|
|
struct ofw_bus_iinfo *ii;
|
|
struct ofw_pci_register reg;
|
|
ofw_pci_intr_t pintr, mintr;
|
|
uint8_t maskbuf[sizeof(reg) + sizeof(pintr)];
|
|
|
|
sc = device_get_softc(bridge);
|
|
ii = &sc->ops_iinfo;
|
|
if (ii->opi_imapsz > 0) {
|
|
pintr = intpin;
|
|
if (ofw_bus_lookup_imap(ofw_bus_get_node(dev), ii, ®,
|
|
sizeof(reg), &pintr, sizeof(pintr), &mintr, sizeof(mintr),
|
|
NULL, maskbuf)) {
|
|
/*
|
|
* If we've found a mapping, return it and don't map
|
|
* it again on higher levels - that causes problems
|
|
* in some cases, and never seems to be required.
|
|
*/
|
|
return (mintr);
|
|
}
|
|
} else if (intpin >= 1 && intpin <= 4) {
|
|
/*
|
|
* When an interrupt map is missing, we need to do the
|
|
* standard PCI swizzle and continue mapping at the parent.
|
|
*/
|
|
return (pcib_route_interrupt(bridge, dev, intpin));
|
|
}
|
|
/* Try at the parent. */
|
|
return (PCIB_ROUTE_INTERRUPT(device_get_parent(device_get_parent(
|
|
bridge)), bridge, intpin));
|
|
}
|
|
|
|
phandle_t
|
|
ofw_pcib_gen_get_node(device_t bridge, device_t dev)
|
|
{
|
|
struct ofw_pcib_gen_softc *sc;
|
|
|
|
sc = device_get_softc(bridge);
|
|
return (sc->ops_node);
|
|
}
|