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The user of the fsl_pcie code doesn't set bus_offset and 82xx doesn't
require it either. Remove the places in the code that reference it so
we can remove it all together.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Now that we have the pci_controller in the exclude function we can easy
figure out if the bus number is the PHB or not. The old style of using a
variable setup at init time was actually broken and would only work in
specific cases.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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There are times that we need to know which controller we are on to decide
how to exclude devices properly. We now pass the pci_controller that we
are going to use down to the pci_exclude_device function. This will
greatly simplify being able to exclude the PHBs in multiple controller
setups.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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The hose->bus_offset is only used for PCI config cycles and the 52xx PCI
config code doesn't actually ever set bus_offset to a non-zero value.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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The Freescale and Marvell PCI controllers dont require explicit setting for
type 1 config cycles. They handle producing them by implicitly looking at the
bus, devfn.
The TSI108 and 52xx don't use the generic PCI indirect code and thus don't
bother with set_cfg_type.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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The TSI108 code and the 32 bit powermac and chrp platforms
have dependency on PCI that is not easy or desirable to get rid
of.
The easiest fix is to always select CONFIG_PCI if one of those
platforms is enabled.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Some code looks can be configured to be built without
PCI support, but does not work properly.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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When CONFIG_PCI is disabled, the definitions for isa_io_base,
isa_mem_base and pci_dram_offset are entirely unused, but they
can result in link failure because they are defined in multiple
places.
The easiest fix is to just remove all these definitions.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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needed for 6xx allyesconfig
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Many platforms currently define their own add_bridge function, some
of them globally. This breaks some multiplatform configurations.
Prefixing each of these functions with the platform name avoids
this problem.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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The cores used in the MPC82xx/83xx/86xx embedded controllers are very similar
to those in the 32 bit general-purpose processors, so it makes sense to
treat them as the same CPU family.
Choosing between the embedded platforms and the multiplatform code is
now done in the platform menu, but functionally everything stays the
same.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Currently iSeries will recalibrate the cputime_factors in the first
settimeofday() call.
It seems the reason for doing this is to ensure a resaonable time delta after
time_init(). On current kernels (with udev), this call is made 40-60 seconds
into the boot process, by moving it to a late initcall it is called
approximately 5 seconds after time_init() is called. This is sufficient to
recalibrate the timebase.
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
CC: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Add support for storage devices to the device probe code.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Add storage driver core support for the PS3.
PS3 storage devices are a special kind of PS3 system bus device.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Preallocate 256 KiB of bootmem memory for the PS3 FLASH ROM storage driver.
This can be disabled by passing `ps3flash=off' on the kernel command line.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Fix some PS3 build warnings reported by `make C=1'.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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The PS3 uses the kernel's hotplug memory support, so make sure it is
always enabled when building for PS3.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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The PS3 device tree source.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Replace the inline asm with bitops in the PS3 interrupt
chip mask routines.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Rename the PS3 static symbols node to ppe_id and cpu to thread_id
to clarify usage.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Add routines to probe devices present on the system
and to register those devices with the LDM.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Convert the ps3fb device from a platform device to a PS3 system bus device.
Fix the remove and shutdown methods to support kexec and to make ps3fb a
loadable module.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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PS3 vuart updates to reflect the new PS3 unified device support.
- Move vuart devices to the PS3 system bus.
- Replace use of ps3_vuart_port_device with ps3_system_bus_device.
- Make the PS3 vuart bus driver a loadable module.
- Add remove() and shutdown() routines.
- Move ps3_vuart_work into ps3_vuart_port_priv.tx_list.
- Remove redundant spinlock ps3_vuart_work.lock.
- No longer free ps3_vuart_port_device.priv on shutdown.
- Cleanup Kconfig defs.
- Export symbols needed for modular port drivers.
- Arrange to use port numbers found in repository.
- Fix bugs in ps3_vuart_read_async() and polled reading
- Cleanup handling of shared interrupt with ps3_vuart_bus_interrupt_get()
and ps3_vuart_bus_interrupt_put()
- Add more comments to vuart.c.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Repository updates:
- Extract ps3_repository_find_bus() from ps3_repository_find_device(), as the
storage driver needs it.
- Make ps3_repository_find_device() return -ENODEV if a device is not found,
just like if a bus is not found.
- Add ps3_repository_read_vuart_sysmgr_port() and
ps3_repository_read_vuart_av_port() to get vuart port info.
- Add device enumeration routines ps3_repository_find_device() and
ps3_repository_find_devices().
- Cleanup debug routines.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Add modinfo attribute to ps3_system_bus devices. Also make them all
children of the same ps3_system_bus 'device' so they appear in a
corresponding subdirectory under /sys/devices.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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To allow userspace to automatically load modules, we need to hook up
uevent for ps3_system_bus devices. I've used the form 'ps3:%d' with
the ps3_match_id, since that's what we use for matching drivers.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Rework the PS3 system bus to unify device support.
- DMA region sizes must be a power of two
- storage bus DMA updates:
- Small fixes for the PS3 DMA core:
o fix alignment bug
o kill superfluous test
o indentation
o spelling
o export ps3_dma_region_{create,free}()
- ps3_dma_region_init():
o Add `addr' and `len' parameters, so you can create a DMA region that
does not cover all memory (use `NULL' and `0' to cover all memory).
This is needed because there are not sufficient IOMMU resources to have
all DMA regions cover all memory.
o Uninline
- Added remove and shutdown routines to all drivers.
- Added loadable module support to all drivers.
- Added HV calls for iopte management (needed by sound driver).
Signed-off-by: MOKUNO Masakazu <mokuno@sm.sony.co.jp>
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Fixup the core platform parts needed for kexec to work on the PS3.
- Setup ps3_hpte_clear correctly.
- Mask interrupts on irq removal.
- Release all hypervisor resources.
- Create new routine ps3_shutdown_IRQ()
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Simplify the PS3 definition of DBG.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This just moves the definitions of the PS3 chip_mask routines up
above the irq setup routines. This change is needed for the
kexec updates that follow. Also adds some inline documentation
to the routines.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Fix some PS3 build warnings reported by `make C=1'. You need to
install sparse:
git://git.kernel.org/pub/scm/devel/sparse/sparse.git
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Use ioremap_flags() to map SPU regions as non-guarded.
Change the use of _ioremap() to ioremap_flags().
CC: Arnd Bergmann <arnd.bergmann@de.ibm.com>
CC: Masato Noguchi <Masato.Noguchi@jp.sony.com>
CC: Takao Shinohara <shin@sm.sony.co.jp>
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Add a utility routine ps3_compare_firmware_version() to compare system
firmware versions. Uses the existing ps3_get_firmware_version() routine.
Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Change the PS3 debug routines from using the GCC specific
'__attribute__ ((unused))' to the preprocessor macro
__maybe_unused.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Rename the PS3 static symbol virqs to ps3_ipi_virqs to aid in
debugging.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Add a shutdown method to spu_sysdev_class to allow proper spu resource
cleanup on system shutdown. This is needed to support kexec on the PS3
platform.
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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On Power machines supporting VRMA, Kexec/Kdump does not work.
VRMA (virtual real-mode area) means that accesses with IR/DR = 0
(i.e. the MMU "off") actually still go through the hash table,
using entries put there by the hypervisor.
This means that when we clear out the hash table on kexec, we need to
make sure these entries are left untouched.
This also adds plpar_pte_read_raw() on the lines of
plpar_pte_remove_raw().
Signed-off-by : Sachin Sant <sachinp@in.ibm.com>
Signed-off-by : Mohan Kumar M <mohan@in.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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In some of the PPC970 based systems, interrupt would be distributed to
offline cpus also even when booted with "maxcpus=1". So check whether
cpu online map and cpu present map are equal or not. If they are equal
default_distrib_server is used as interrupt server otherwise boot cpu
(default_server) used as interrupt server.
In addition to this, if an interrupt is assigned to a specific cpu (ie
smp affinity) and if that cpu is not online, the earlier code used to
return the default_distrib_server as interrupt server. This
introduces an additional parameter to the get_irq function, called
strict_check. Based on this parameter, if the cpu is not online
either default_distrib_server or -1 is returned.
Signed-off-by: Mohan Kumar M <mohan@in.ibm.com>
Cc: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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The holly support currently has separate rules to wrap its device tree
with its zImage. This can now be done automatically without the extra
rules so update holly support to use the automatic feature.
Signed-off-by: Mark A. Greer <mgreer@mista.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Glue code to hook up the pata_platform on the PA Semi Electra eval board.
CFE sets up device tree entries for the IDE interface, with device type
'ide' and compatible field 'electra-ide'.
We unfortunately need to modify the resources before calling the generic
platform driver, since the device tree only has one register window in
it and the driver expects two. Adding this as an of_platform driver
instead doesn't give us any benefit, it just adds one more layer of
register/probe functions.
Since CONFIG_PATA_PLATFORM depends on CONFIG_EMBEDDED, add that as a
default for PPC_PASEMI.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Using typedefs to rename structure types if frowned on by CodingStyle.
However, we do so for the hash PTE structure on both ppc32 (where it's
called "PTE") and ppc64 (where it's called "hpte_t"). On ppc32 we
also have such a typedef for the BATs ("BAT").
This removes this unhelpful use of typedefs, in the process
bringing ppc32 and ppc64 closer together, by using the name "struct
hash_pte" in both cases.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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APUS (the Amiga Power-Up System) is not supported under arch/powerpc
and it's unlikely it ever will be. Therefore, this patch removes the
fragments of APUS support code from arch/powerpc which have been
copied from arch/ppc.
A few APUS references are left in asm-powerpc in .h files which are
still used from arch/ppc.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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A lot of the options in arch/powerpc/Kconfig deal with the CPU menu,
and my next patches add more to them. Moving them to a new
arch/powerpc/platforms/Kconfig.cputype file makes it easier to
follow.
There are no functional changes in here.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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A Power6 can give up CPU cycles on a dedicated CPU (as opposed to a
shared CPU) to other shared processors if the administrator asks for it
(via the HMC).
This enables that to work properly on P6.
This just involves setting a bit in the CAS structure as well as the
VPA. To donate cycles, a CPU has to have all SMT threads idle and
have the donate bit set in the VPA. Then call H_CEDE.
The reason why shared processors just aren't used is because dedicated
CPUs are guaranteed an actual processor, yet the system is still able to
increase the capacity of the shared CPU pool.
Also rename the VPA's cpuctls_task_attrs field to a more accurate name.
Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This adds a "capabilities" file to spu contexts consisting of a
list of linefeed separated capability names. The current exposed
capabilities are "sched" (the context is scheduleable) and
"step" (the context supports single stepping).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This patch adds support for SPU single stepping. The single
step bit is set in the SPU when the current process is
being single-stepped via ptrace. The spu then stops and
returns with a specific flag set and the syscall exit code
will generate the SIGTRAP.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This rewrites pretty much from scratch the handling of MMIO and PIO
space allocations on powerpc64. The main goals are:
- Get rid of imalloc and use more common code where possible
- Simplify the current mess so that PIO space is allocated and
mapped in a single place for PCI bridges
- Handle allocation constraints of PIO for all bridges including
hot plugged ones within the 2GB space reserved for IO ports,
so that devices on hotplugged busses will now work with drivers
that assume IO ports fit in an int.
- Cleanup and separate tracking of the ISA space in the reserved
low 64K of IO space. No ISA -> Nothing mapped there.
I booted a cell blade with IDE on PIO and MMIO and a dual G5 so
far, that's it :-)
With this patch, all allocations are done using the code in
mm/vmalloc.c, though we use the low level __get_vm_area with
explicit start/stop constraints in order to manage separate
areas for vmalloc/vmap, ioremap, and PCI IOs.
This greatly simplifies a lot of things, as you can see in the
diffstat of that patch :-)
A new pair of functions pcibios_map/unmap_io_space() now replace
all of the previous code that used to manipulate PCI IOs space.
The allocation is done at mapping time, which is now called from
scan_phb's, just before the devices are probed (instead of after,
which is by itself a bug fix). The only other caller is the PCI
hotplug code for hot adding PCI-PCI bridges (slots).
imalloc is gone, as is the "sub-allocation" thing, but I do beleive
that hotplug should still work in the sense that the space allocation
is always done by the PHB, but if you unmap a child bus of this PHB
(which seems to be possible), then the code should properly tear
down all the HPTE mappings for that area of the PHB allocated IO space.
I now always reserve the first 64K of IO space for the bridge with
the ISA bus on it. I have moved the code for tracking ISA in a separate
file which should also make it smarter if we ever are capable of
hot unplugging or re-plugging an ISA bridge.
This should have a side effect on platforms like powermac where VGA IOs
will no longer work. This is done on purpose though as they would have
worked semi-randomly before. The idea at this point is to isolate drivers
that might need to access those and fix them by providing a proper
function to obtain an offset to the legacy IOs of a given bus.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Twiddle the copyright notices. Per current guidelines, the use
of the (C) or (c) in source code is deprecated.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
----
arch/powerpc/platforms/pseries/eeh.c | 6 +++++-
arch/powerpc/platforms/pseries/eeh_cache.c | 3 ++-
arch/powerpc/platforms/pseries/eeh_driver.c | 6 +++---
3 files changed, 10 insertions(+), 5 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Remove some dead code.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
----
arch/powerpc/platforms/pseries/eeh.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Track and report the number of times we read an all-1s value (0xff,
0xffff or 0xffffffff) from each device which is valid data, not
indicating EEH isolation.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
----
arch/powerpc/platforms/pseries/eeh.c | 5 +++++
arch/powerpc/platforms/pseries/eeh_sysfs.c | 3 +++
include/asm-powerpc/pci-bridge.h | 1 +
3 files changed, 9 insertions(+)
Signed-off-by: Paul Mackerras <paulus@samba.org>
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