Commit graph

21458 commits

Author SHA1 Message Date
Stefan Roese
1d60f0fcda [POWERPC] 4xx: Add Canyonlands defconfig file
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-03-26 07:19:17 -05:00
Stefan Roese
66b7e504c0 [POWERPC] 4xx: Add 460EX PCIe support to 4xx pci driver
All this code is needed to properly initialize the 460EX PCIe host
bridge(s). We re-initialize all ports again, even though this has been done
in the bootloader (U-Boot) before. This way we make sure, that we always
run the latest init code in Linux and don't depend on code versions from
U-Boot.

Unfortunately all IBM/AMCC chips currently supported in this PCIe driver need
a different reset-/init-sequence.

Tested on AMCC Canyonlands eval board.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-03-26 07:19:16 -05:00
Stefan Roese
8bc4a51d28 [POWERPC] 4xx: Add Canyonlands DTS
This dts source file for the AMCC 460EX Canyonlands evalutaion board

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-03-26 07:19:16 -05:00
Stefan Roese
66e4b3341d [POWERPC] 4xx: Add AMCC Canyonlands 460EX eval board support to platforms/44x
Canyonlands is the AMCC 460EX eval board, featuring nearly all of the 460EX
interfaces:

- 1 * PCI (max 66MHz), 2 * PCIe (one 4-lane, one 1-lane)
- 2 * GBit Ethernet with TCP/IP acceleration
- USB 2.0 Host/Device OTG and Host interface
- SATA port

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-03-26 07:19:16 -05:00
Stefan Roese
464076a4b3 [POWERPC] 4xx: Add AMCC 460EX/460GT support to cputable.c & cpu_setup_44x.S
This patch adds basic support for the AMCC 460EX/460GT PPC's to arch/powerpc.
Currently those PPC's are still based on a 440 core and *not* a 460 core.

Here some basic features of those SoC's:

460EX:
- Up to 1.2GHz, 32kB L1 I-cache and D-cache, 256kB L2-cache, FPU
- 1 * PCI (max 66MHz), 2 * PCIe (one 4-lane, one 1-lane)
- 2 * GBit Ethernet with TCP/IP acceleration
- USB 2.0 Host/Device OTG and Host interface
- SATA controller
- Optional security feature

460GT (only changes to 460EX):
- 4 * GBit Ethernet with TCP/IP acceleration
- RapidIO
- No SATA
- No USB

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-03-26 07:19:16 -05:00
David Gibson
ecc6cd73b7 [POWERPC] Start removing linux,network-index in favour of aliases
This patch alters the bootwrapper for a number of machines (roubhly
all 4xx based cuboot or treeboot platforms) to use aliases instead of
the linux,network-index hack to work out which MAC address to attach
to which ethernet device node.

The now obsolete linux,network-index properties are removed from the
corresponding device trees.  This won't break backwards compatiblity,
because in cases where this fixup code is relevant, the device tree is
part of the kernel image.

The references to linux,network-index are removed from
booting-without-of.txt.  Not only is it now deprecated, but as a hack
applicable only when the device tree blob and fixup code were in the
same image, this property never belonged in booting-without-of.txt
which describes the interface between the kernel and firmware or
bootloaders which produce a device tree.  By the time the device tree
reaches the kernel, all the MAC addresses must be fully filled in.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-03-26 07:19:16 -05:00
David S. Miller
f6a843d939 [SPARC64]: flush_ptrace_access() needs preemption disable.
Based upon a report by Mariusz Kozlowski.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-26 04:51:12 -07:00
David S. Miller
e5ac71f255 [SPARC64]: Update defconfig.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-26 04:34:04 -07:00
David S. Miller
11cc8a3abf [SPARC64]: Fix allnoconfig build, ptrace.c missing CONFIG_COMPAT checks.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-26 04:31:50 -07:00
David S. Miller
69072f6e8e [SPARC64]: Fix __get_cpu_var in preemption-enabled area.
Reported by Mariusz Kozlowski.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-26 04:25:00 -07:00
Paul Mundt
9bbafce2ee sh: Fix occasional FPU register corruption under preempt.
Presently with preempt enabled there's the possibility to be preempted
after the TIF_USEDFPU test and the register save, leading to bogus
state post-__switch_to(). Use an explicit preempt_disable()/enable()
pair around unlazy_fpu()/clear_fpu() to avoid this. Follows the x86
change.

Reported-by: Takuo Koguchi <takuo.koguchi.sw@hitachi.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-26 19:02:47 +09:00
David S. Miller
062ea6d36c [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/signal.c
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-26 01:52:18 -07:00
David S. Miller
207ddd0a3a [SPARC64]: Fix most sparse warnings in arch/sparc64/kernel/sys_sparc.c
Sparse still doesn't like the funny cast we make from a scalar to a
"union semun" (which is correct by the C language and in particular
works with the sparc64 calling conventions, but sparse doesn't grok
that yet).

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-26 01:43:29 -07:00
David S. Miller
cf3d7c1ef4 [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/time.c
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-26 01:11:55 -07:00
David S. Miller
bfdf9ebc39 [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/ptrace.c
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-26 00:46:21 -07:00
David S. Miller
d91aa123b4 [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/irq.c
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-26 00:37:51 -07:00
David S. Miller
6c830fefcc [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/iommu.c
Fix local variable shadowing in dma_4u_map_sg().

Mark sun4u_dma_ops static.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-26 00:19:50 -07:00
David S. Miller
99cd220133 [SPARC64]: Fix sparse errors in arch/sparc64/kernel/traps.c
Add 'UL' markers to DCU_* macros.

Declare C functions called from assembler in entry.h

Declare C functions called from within the sparc64 arch
code in include/asm-sparc64/*.h headers as appropriate.

Remove unused routines in traps.c

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-26 00:19:43 -07:00
Patrick McHardy
f70c176619 [UML]: uml-net: don't set IFF_ALLMULTI in set_multicast_list
IFF_ALLMULTI is an indication from the network stack to the driver
to disable multicast filters, drivers should never set it directly.

Since the UML networking device doesn't have any filtering capabilites,
it doesn't the set_multicast_list function at all, it is kept so userspace
can still issue SIOCADDMULTI/SIOCDELMULTI ioctls however.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-26 00:16:29 -07:00
David S. Miller
3d5ae6b69e [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/{cpu,setup}.c
We create a local header file entry.h, under arch/sparc64/kernel/,
that we can use to declare routines either defined in assembler
or only invoked from assembler.  As well as other data objects
which are private to the inner sparc64 kernel arch code.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-25 21:51:40 -07:00
Paul Mackerras
54f53f2b94 Merge branch 'linux-2.6' 2008-03-26 08:44:18 +11:00
Nathan Lynch
f61fb8a52c [POWERPC] scanlog_init cleanup and minor fixes
scanlog_init() could use some love.

* properly return -ENODEV if this system doesn't support scan-log-dump
* don't printk if scan-log-dump not present; only older systems have it
* convert from create_proc_entry() to preferred proc_create()
* allocate zeroed data buffer
* fix potential memory leak of ent->data on failed create_proc_entry()
* simplify control flow

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:07 +11:00
Manish Ahuja
7415d5e0be [POWERPC] pseries: phyp dump: Inform kdump when phyp-dump is loaded
This adds /sys/kernel/phyp_dump_active so that kdump init scripts may
look for it and take appropriate action if this file is found.  This
file is only created when phyp_dump has been registered.

Signed-off-by: Manish Ahuja <mahuja@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:07 +11:00
Manish Ahuja
654f596da4 [POWERPC] pseries: phyp dump: Disable phyp-dump through boot-var
This adds a kernel command line option "phyp_dump", which takes a 0/1
value for disabling/ enabling phyp_dump at boot time.  Kdump can use
this on cmdline (phyp_dump=0) to disable phyp-dump during boot when
enabling itself.  This will ensure only one dumping mechanism is active
at any given time.

Signed-off-by: Manish Ahuja <mahuja@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:07 +11:00
Manish Ahuja
242f271c05 [POWERPC] pseries: phyp dump: Add Kconfig file option
Add hypervisor-assisted dump to kernel config.

Signed-off-by: Linas Vepstas <linasvepstas@gmail.com>
Signed-off-by: Manish Ahuja <mahuja@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:07 +11:00
Manish Ahuja
fd35cff8d2 [POWERPC] pseries: phyp dump: Tracking memory range freed
This tracks the size freed.  For now it does a simple rudimentary
calculation of the ranges freed.  The idea is to keep it simple at the
external shell script level and send in large chunks for now.

Signed-off-by: Manish Ahuja <mahuja@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:07 +11:00
Manish Ahuja
a9c508dae1 [POWERPC] pseries: phyp dump: Invalidate and print dump areas
This adds routines to
a. invalidate dump
b. calculate region that is reserved and needs to be freed.  This is
   exported through sysfs interface.

Unregister has been removed for now as it wasn't being used.

Signed-off-by: Manish Ahuja <mahuja@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:06 +11:00
Manish Ahuja
599c1aa54f [POWERPC] pseries: phyp dump: Debugging print routines
Provide some basic debugging support.

Signed-off-by: Manish Ahuja <mahuja@us.ibm.com>
Signed-off-by: Linas Vepstas <linasvepstas@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:06 +11:00
Manish Ahuja
2c4f41139c [POWERPC] pseries: phyp dump: Register dump area
Set up the actual dump header, register it with the hypervisor.

Signed-off-by: Manish Ahuja <mahuja@us.ibm.com>
Signed-off-by: Linas Vepstas <linasvepstas@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:06 +11:00
Manish Ahuja
d5a29c7a36 [POWERPC] pseries: phyp dump: Use sysfs to release reserved mem
Check to see if there actually is data from a previously
crashed kernel waiting.  If so, allow user-space tools to
grab the data (by reading /proc/kcore).  When user-space
finishes dumping a section, it must release that memory
by writing to sysfs. For example,

  echo "0x40000000 0x10000000" > /sys/kernel/release_region

will release 256MB starting at the 1GB.  The released memory
becomes free for general use.

Signed-off-by: Linas Vepstas <linasvepstas@gmail.com>
Signed-off-by: Manish Ahuja <mahuja@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:06 +11:00
Manish Ahuja
6ac26c8a7e [POWERPC] pseries: phyp dump: Reserve and release memory
Initial patch for reserving memory in early boot, and freeing it
later.  If the previous boot had ended with a crash, the reserved
memory would contain a copy of the crashed kernel data.

Signed-off-by: Manish Ahuja <mahuja@us.ibm.com>
Signed-off-by: Linas Vepstas <linasvepstas@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:06 +11:00
Roland McGrath
163dab39b5 [POWERPC] powerpc32: Remove asm-offsets ptrace cruft
These items in asm-offsets.c are not used anywhere.  This removes them.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:05 +11:00
S.Çağlar Onur
59861bc6ee [POWERPC] arch/powerpc/platforms/iseries/pci.c: Use time_* macros
The functions time_before, time_before_eq, time_after, and
time_after_eq are more robust for comparing jiffies against other
values.

This implements usage of the time_after() macro, defined at
linux/jiffies.h, which deals with wrapping correctly.

Signed-off-by: S.Çağlar Onur <caglar@pardus.org.tr>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:05 +11:00
Tony Breeds
96366a8d3f [POWERPC] Update wait_state_cycles in the VPA
The hypervisor can look at the value in the wait_state_cycles field of
the VPA for an estimate of how busy dedicated processors are.
Currently, as the kernel never touches this field, we appear to be
100% busy.  This records the duration the kernel is in powersave and
passes that to the HV to provide a reasonable indication of
utilisation.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:05 +11:00
Roland McGrath
71e91a0abb [POWERPC] Don't touch PT_DTRACE in exec
The PT_DTRACE flag is meaningless and obsolete.
Don't touch it.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:05 +11:00
Stephen Rothwell
bceabd1505 [POWERPC] Really export empty_zero_page
It was being protected by CONFIG_PPC32, but we want to export it on
64-bit also.  This moves it out of the ifdef.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:05 +11:00
Nathan Lynch
4944774d7f [POWERPC] maple: Enable ipr driver in defconfig
Some machines supported by the maple platform have an Obsidian
controller which can't be used without enabling CONFIG_IPR and the
options on which it depends.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:04 +11:00
Nathan Lynch
1cd8f348be [POWERPC] maple: Kill fixup_maple_ide
This function has been a no-op for about 18 months; it's there in
the history should anyone need to resurrect it.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:04 +11:00
Nathan Lynch
53378c2845 [POWERPC] maple: Use platform name in define_machine()
Prevailing practice for define_machine() in powerpc is to use the
platform name when the platform has only one define_machine()
statement, but maple uses "maple_md".  This caused me some
head-scratching when writing some new code that uses
machine_is(maple).

Use "maple" instead of "maple_md".  There should not be any behavioral
change -- fixup_maple_ide() calls machine_is(maple) but the body of
the function is ifdef'd out.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:04 +11:00
Marian Balakowicz
0276c1368f [POWERPC] Add 'model: ...' line to common show_cpuinfo()
Print out 'model' property of '/' node as a machine name
in generic show_cpuinfo() routine.

Signed-off-by: Marian Balakowicz <m8@semihalf.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-26 08:44:04 +11:00
YOSHIFUJI Hideaki
c346dca108 [NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS.
Introduce per-net_device inlines: dev_net(), dev_net_set().
Without CONFIG_NET_NS, no namespace other than &init_net exists.
Let's explicitly define them to help compiler optimizations.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-26 04:39:53 +09:00
Olof Johansson
5c29934de2 [POWERPC] update pasemi_defconfig
Disable GEN_RTC since it conflicts with the i2c rtc drivers registering,
besides that keep most of the new defaults.

Signed-off-by: Olof Johansson <olof@lixom.net>
2008-03-25 10:28:26 -05:00
Avi Kivity
e48bb497b9 KVM: MMU: Fix memory leak on guest demand faults
While backporting 72dc67a696, a gfn_to_page()
call was duplicated instead of moved (due to an unrelated patch not being
present in mainline).  This caused a page reference leak, resulting in a
fairly massive memory leak.

Fix by removing the extraneous gfn_to_page() call.

Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 10:22:17 +02:00
Marcelo Tosatti
707a18a51d KVM: VMX: convert init_rmode_tss() to slots_lock
init_rmode_tss was forgotten during the conversion from mmap_sem to
slots_lock.

INFO: task qemu-system-x86:3748 blocked for more than 120 seconds.
Call Trace:
 [<ffffffff8053d100>] __down_read+0x86/0x9e
 [<ffffffff8053fb43>] do_page_fault+0x346/0x78e
 [<ffffffff8053d235>] trace_hardirqs_on_thunk+0x35/0x3a
 [<ffffffff8053dcad>] error_exit+0x0/0xa9
 [<ffffffff8035a7a7>] copy_user_generic_string+0x17/0x40
 [<ffffffff88099a8a>] :kvm:kvm_write_guest_page+0x3e/0x5f
 [<ffffffff880b661a>] :kvm_intel:init_rmode_tss+0xa7/0xf9
 [<ffffffff880b7d7e>] :kvm_intel:vmx_vcpu_reset+0x10/0x38a
 [<ffffffff8809b9a5>] :kvm:kvm_arch_vcpu_setup+0x20/0x53
 [<ffffffff8809a1e4>] :kvm:kvm_vm_ioctl+0xad/0x1cf
 [<ffffffff80249dea>] __lock_acquire+0x4f7/0xc28
 [<ffffffff8028fad9>] vfs_ioctl+0x21/0x6b
 [<ffffffff8028fd75>] do_vfs_ioctl+0x252/0x26b
 [<ffffffff8028fdca>] sys_ioctl+0x3c/0x5e
 [<ffffffff8020b01b>] system_call_after_swapgs+0x7b/0x80

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 10:22:17 +02:00
Marcelo Tosatti
15aaa819e2 KVM: MMU: handle page removal with shadow mapping
Do not assume that a shadow mapping will always point to the same host
frame number.  Fixes crash with madvise(MADV_DONTNEED).

[avi: move after first printk(), add another printk()]

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 10:22:17 +02:00
Avi Kivity
4b1a80fa65 KVM: MMU: Fix is_rmap_pte() with io ptes
is_rmap_pte() doesn't take into account io ptes, which have the avail bit set.

Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 10:22:16 +02:00
Avi Kivity
5dc8326282 KVM: VMX: Restore tss even on x86_64
The vmx hardware state restore restores the tss selector and base address, but
not its length.  Usually, this does not matter since most of the tss contents
is within the default length of 0x67.  However, if a process is using ioperm()
to grant itself I/O port permissions, an additional bitmap within the tss,
but outside the default length is consulted.  The effect is that the process
will receive a SIGSEGV instead of transparently accessing the port.

Fix by restoring the tss length.  Note that i386 had this working already.

Closes bugzilla 10246.

Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 10:22:16 +02:00
David S. Miller
85a7935335 [SPARC64]: Make save_stack_trace() more efficient.
Doing a 'flushw' every stack trace capture creates so much overhead
that it makes lockdep next to unusable.

We only care about the frame pointer chain and the function caller
program counters, so flush those by hand to the stack frame.

This is significantly more efficient than a 'flushw' because:

1) We only save 16 bytes per active register window to the stack.

2) This doesn't push the entire register window context of the current
   call chain out of the cpu, forcing register window fill traps as we
   return back down.

Note that we can't use 'restore' and 'save' instructions to move
around the register windows because that wouldn't work on Niagara
processors.  They optimize 'save' into a new register window by
simply clearing out the registers instead of pulling them in from
the on-chip register window backing store.

Based upon a report by Tom Callaway.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-24 20:06:24 -07:00
Paul Mackerras
16fddf5457 Merge branch 'linux-2.6' into merge 2008-03-25 13:31:46 +11:00
Grant Likely
5492a7e4cb [POWERPC] mpc5200: Fix incorrect compatible string for the mdio node
The MDIO node in the lite5200b.dts file needs to also claim compatibility
with the older mpc5200 chip.  Otherwise the driver won't find the device.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-03-25 13:18:39 +11:00