diff options
author | marius <marius@FreeBSD.org> | 2011-10-02 23:22:38 +0000 |
---|---|---|
committer | marius <marius@FreeBSD.org> | 2011-10-02 23:22:38 +0000 |
commit | b730263346b617e3949a799cd7cbbaec0a0faaba (patch) | |
tree | 8a3ccb0c4cbe92ab406722848f03d20132c1e280 /sys/sparc64/conf | |
parent | 2dc050638298978fc3e396cc2d0206c599dc8c46 (diff) | |
download | FreeBSD-src-b730263346b617e3949a799cd7cbbaec0a0faaba.zip FreeBSD-src-b730263346b617e3949a799cd7cbbaec0a0faaba.tar.gz |
Make sparc64 compatible with NEW_PCIB and enable it:
- 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.
Diffstat (limited to 'sys/sparc64/conf')
-rw-r--r-- | sys/sparc64/conf/DEFAULTS | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/sparc64/conf/DEFAULTS b/sys/sparc64/conf/DEFAULTS index 38b2408..de7b253 100644 --- a/sys/sparc64/conf/DEFAULTS +++ b/sys/sparc64/conf/DEFAULTS @@ -19,3 +19,5 @@ options GEOM_PART_VTOC8 # Let sunkbd emulate an AT keyboard by default. options SUNKBD_EMULATE_ATKBD + +#options NEW_PCIB |