The PowerNow! driver for Opteron reports the number of cores
in the system, but claims to report the number of processors.
Fix this minor cosmetic bug.
Signed-off-by: Bhavana Nagendra <bhavana.nagendra@amd.com>
Acked-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
fill_powernow_table_pstate() and fill_powernow_table_fidvid() are only
defined and used for X86_POWERNOW_K8_ACPI.
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Dave Jones <davej@redhat.com>
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (21 commits)
[IPV4] SNMP: Support OutMcastPkts and OutBcastPkts
[IPV4] SNMP: Support InMcastPkts and InBcastPkts
[IPV4] SNMP: Support InTruncatedPkts
[IPV4] SNMP: Support InNoRoutes
[SNMP]: Add definitions for {In,Out}BcastPkts
[TCP] FRTO: RFC4138 allows Nagle override when new data must be sent
[TCP] FRTO: Delay skb available check until it's mandatory
[XFRM]: Restrict upper layer information by bundle.
[TCP]: Catch skb with S+L bugs earlier
[PATCH] INET : IPV4 UDP lookups converted to a 2 pass algo
[L2TP]: Add the ability to autoload a pppox protocol module.
[SKB]: Introduce skb_queue_walk_safe()
[AF_IUCV/IUCV]: smp_call_function deadlock
[IPV6]: Fix slab corruption running ip6sic
[TCP]: Update references in two old comments
[XFRM]: Export SPD info
[IPV6]: Track device renames in snmp6.
[SCTP]: Fix sctp_getsockopt_local_addrs_old() to use local storage.
[NET]: Remove NETIF_F_INTERNAL_STATS, default to internal stats.
[NETPOLL]: Remove CONFIG_NETPOLL_RX
...
PCI devices were being programmed with an incorrect base address value.
This patch moves I/O space into a 16-bit addressable region and corrects
the i/o offset.
Much thanks to Martin Michlmayr for tracking this issue and testing
debug patches.
Cc: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fix a typo which causes a necessary cpwait to be missed on iop3xx, Michael
Brunner <mibru@gmx.de>
Save a register in the assembly routine, rmk
Cc: Lennert Buytenhek <kernel@wantstofly.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Call of_find_node_by_type with NULL instead of np
so the cpu node does not get put twice.
This was causing kref_put warnings.
Signed-off-by: John Rigby <jrigby@freescale.com>
Acked-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Use DEFINE_SPINLOCK instead of initializing spinlocks to
SPIN_LOCK_UNLOCKED, since DEFINE_SPINLOCK is better for lockdep.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
For dma_alloc_*()
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
arch/powerpc/sysdev/timer.c:51: error: variable `timer_sysclass' has
initializer but incomplete type
arch/powerpc/sysdev/timer.c:52: error: unknown field `resume' specified in initializer
<etc>
Signed-off-by: Srinivasa Ds <srinivasa@in.ibm.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Just another pass through arch/powerpc for old usages.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Recently, someone fixed a syntax error in the HTDMSOUND driver
introduced 4 years ago.
Unfortunately not by trying to compile this driver for his hardware but
by code inspection - which seems to be a strong indication that there
are no users left for this OSS sound driver.
This patch therefore removes it.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Dan Malek <dan@embeddedalley.com>
Acked-by: Marcelo Tosatti <marcelo@kvack.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
dt_xlate_reg() looks up the 'reg' property in the specified node
to get the address and size to translate. Add dt_xlate_addr()
which is passed in the address and size to translate.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
A usage of CONFIG_DEVICE_TREE got accidentally truncated; this
fix allows out-of-tree dts files to work.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Why create a platform specific board_info structure that is hacked
together, ugly, and dangerous, when we've got a perfectly fine common
board_info structure that is hacked-together, ugly and dangerous.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The arch/ppc/syslib/ppc_sys.c infrastructure does not work well for the
virtex ports. Move the ml300 and ml403 board ports over to use the new
virtex_devices infrastructure.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Currently virtex support in mainline make use of the infrastructure in
arch/ppc/syslib/ppc_sys.c for registering common devices on virtex ppc405
platforms. The ppc_sys.c code is not well suited to the dynamic nature of
FPGA designs and makes adding new board ports more complex. This patch
adds a new listing of common devices which does not depend on the ppc_sys.c
infrastructure.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The header files for the ml403 and ml300 are virtually identical, merge
them into a single file.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Reverse dependency order for Xilinx Virtex parts. For these parts, It
makes more sense for boards/chips to specify which features they
provide instead of the features listing the parts they are implemented
in. I think it also makes adding new board ports simpler.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Shuffle Kconfig order, making the platform drivers menu depend on the global
option instead of each driver being dependent on it.
Also fix dependency of PPC_PMAC on the G5 one.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This reverts commit 9414715a7b,
at Olaf Hering's request:
> Paul, please discard this patch. The optional graphics card may have
> also device_type 'serial' if it is in VGA mode.
> I will send an updated patch later.
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (107 commits)
smc911x: fix compilation breakage wjen debug is on
[netdrvr] eexpress: minor corrections
add NAPI support to sb1250-mac.c
ixgb: ROUND_UP macro cleanup in drivers/net/ixgb
e1000: ROUND_UP macro cleanup in drivers/net/e1000
Generic HDLC sparse annotations
e100: Optionally use I/O mode only to access register space
e100: allow bad MAC address when running with invalid eeprom csum
ehea: fix for dlpar support
ehea: fix for sysfs entries
3C509: Remove unnecessary include of <linux/pm_legacy.h>
NetXen: Fix for vmalloc issues
NetXen: Fixes for Power PC architecture
NetXen: Port swap feature for multi port cards
NetXen: Removal of redundant macros
NetXen: Multi PCI support for Quad cards
NetXen: Removal of redundant argument passing
NetXen: Use multiple PCI functions
[netdrvr e100] experiment with doing RX in a similar manner to eepro100
[PATCH] ieee80211: add missing global needed by IEEE80211_DEBUG_XXXX
...
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: (86 commits)
SPIN_LOCK_UNLOCKED cleanup in drivers/ata/pata_winbond.c
drivers/ata/pata_cmd640.c: fix build with CONFIG_PM=n
pata_hpt37x: Further small fixes
pata_hpt3x2n: Add HPT371N support and other bits
ata: printk warning fixes
libata: separate ATA_EHI_DID_RESET into DID_SOFTRESET and DID_HARDRESET
ahci: consolidate common port flags
ata_timing: ensure t->cycle is always correct
libata: add missing call to ->cable_detect() in new EH path
pata_amd: remove contamination added during cable_detect conversion
libata: Handle drives that require a spin-up command before first access
libata: HPA support
libata: kill probe_ent and related helpers
libata: convert the remaining PATA drivers to new init model
libata: convert the remaining SATA drivers to new init model
libata: convert ata_pci_init_native_mode() users to new init model
libata: convert drivers with combined SATA/PATA ports to new init model
libata: add init helpers including ata_pci_prepare_native_host()
libata: convert native PCI host handling to new init model
libata: convert legacy PCI host handling to new init model
...
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (105 commits)
sonypi: use mutex instead of semaphore
sony-laptop: remove user visible camera controls as platform attributes
meye: make meye use sony-laptop instead of sonypi
sony-laptop: add a meye-usable include file for camera ops
sony-laptop: complete the motion eye camera support in sony-laptop
sonypi: try to detect if sony-laptop has already taken one of the known ioports
sonypi: suggest sonypi users to try sony-laptop instead
sony-laptop: add edge modem support (also called WWAN)
sony-laptop: add locking on accesses to the ioport and global vars
sony-laptop: add camera enable/disable parameter, better handle possible infinite loop
thinkpad-acpi: make drivers/misc/thinkpad_acpi:fan_mutex static
ACPI: thinkpad-acpi: add sysfs support to wan and bluetooth subdrivers
ACPI: thinkpad-acpi: add sysfs support to hotkey subdriver
ACPI: thinkpad-acpi: improve dock subdriver initialization
ACPI: thinkpad-acpi: improve debugging for acpi helpers
ACPI: thinkpad-acpi: improve fan control documentation
ACPI: thinkpad-acpi: map ENXIO to EINVAL for fan sysfs
ACPI: thinkpad-acpi: fix a fan watchdog invocation
ACPI: thinkpad-acpi: do not arm fan watchdog if it would not work
ACPI: thinkpad-acpi: add a fan-control feature master toggle
...
Herbert Xu conviced me that a new flag was overkill; every driver
currently overrides get_stats, so we might as well make the internal
one the default. If someone did fail to set get_stats, they would now
get all 0 stats instead of "No statistics available".
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Both old-IDE and libata should be able handle all controllers and
devices found using normal resource reservation methods.
This eliminates the awful, low-performing split-driver configuration
where old-IDE drove the PATA portion of a PCI device, in PIO-only mode,
and libata drove the SATA portion of the /same/ PCI device, in DMA mode.
Typically vendors would ship SATA hard drive / PATA optical
configuration, which would lend itself to slow (PIO-only) CD-ROM
performance.
For Intel users running in combined mode, it is now wholly dependent on
your driver choice (potentially link order, if you compile both drivers
in) whether old-IDE or libata will drive your hardware.
In either case, you will get full performance from both SATA and PATA
ports now, without having to pass a kernel command line parameter.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Transmit on Demand: Fix spelling in config option, and make it actually enable TOD.
Signed-off-by: Michael Reiss <michael.f.reiss@freescale.com>
Signed-off-by: Michael Barkowski <michael.barkowski@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Andrew Morton found a section mismatch warning in x86_64 triggered by a
wrongly placed __initdata marker.
git grep "struct __initdata" revealed that board-sam9260.c had the same
problem.
This patch fixes this by placing the __initdata marker correct. It was
checked with objdump that the variable was moved to .init.data by this
change.
Fixed an unrelated section mismatch warning while touching the file.
Both changes are only compile tested but obvious correct.
[Used at91sam9260ek_defconfig to get compile coverage]
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add support for stacktrace. Use the new stacktrace code with
oprofile instead of it's version; there's no point having
multiple versions of stacktracing in the kernel.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fixes for various arch compilation problems:
(*) Missing module exports.
(*) Variable name collision when rxkad and af_rxrpc both built in
(rxrpc_debug).
(*) Large constant representation problem (AFS_UUID_TO_UNIX_TIME).
(*) Configuration dependencies.
(*) printk() format warnings.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
arch/powerpc/kernel/of_platform.c:479: error: unknown field `multithread_probe' specified in initializer
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: (67 commits)
[SCSI] SUNESP: Complete driver rewrite to version 2.0
[SPARC64]: Convert PCI over to generic struct iommu/strbuf.
[SPARC]: device_node name constification fallout
[SPARC64]: Convert SBUS over to generic iommu/strbuf structs.
[SPARC64]: Add generic iommu and strbuf structs to iommu.h
[SPARC64]: Consolidate {sbus,pci}_iommu_arena.
[SPARC]: Make device_node name and type const
[SPARC64]: constify some paramaters of OF routines
[TIGON3]: of_get_property() returns const.
[SPARC64]: Fix PCI rework to adhere to of_get_property() const return.
[SPARC64]: Document and fix calculation of pages_avail.
[SPARC64]: Make sure pbm->prom_node is setup easly enough in psycho.c
[SPARC64]: Use bootmem_bootmap_pages() in choose_bootmap_pfn().
[SPARC64]: Add proper header file extern for cmdline_memory_size.
[SPARC64]: Kill sparc_ultra_dump_{i,d}tlb()
[SPARC64]: Use DECLARE_BITMAP and BITS_TO_LONGS in mm/init.c
[SPARC64]: Give move verbose show_mem() output just like i386.
[SPARC64]: Mark show_mem() printk's with KERN_INFO.
[SPARC64]: Kill kvaddr_to_phys() and friends.
[SPARC64]: Privatize sun4u_get_pte() and fix name.
...
This patch has removed 2 select entries for VR41xx.
These entries are selected in arch/mips/vr41xx/Kconfig.
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
PCI host bridge setup for SNI RM machines with PCI is quite broken, now
that Linux does it's resource setup own its own. It will use IO addresses,
which are needed by the EISA config detection and assigns PCI memory
addresses, which overlap with ISA legacy addresses (video ram). Below
is a patch, which changes the way how the PCI memory addresses are
used and sets the minimum IO address to give enough IO space for
8 EISA slots). This patch needs the other PCI resource change, I've
posted.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
PCI based SNI RM machines have their EISA bus behind an Intel PCI/EISA
bridge. So the PCI IO range must start at 0x0000. Changing that will
break the PCI bus, because i8259.c already has registered it's IO
addresses before the PCI bus gets initialized. Below is a patch,
which will register the PCI host bridge resources inside
register_pci_controller(). It also changes i8259.c to use insert_region(),
because request_resource() will fail, if the IO space of the PIT hanging
of the PCI host bridge (maybe passing the resource parent to
init_i8259_irqs() is a cleaner fix for that).
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Make ZBus tracing generic - moving it to a common direcotry under
arch/mips/sibyte, add bcm1480 support and fix some wait related
bugs (thanks to Ralf for assistance on that).
Signed-off-by: Mark Mason <mason@broadcom.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This patch has merged GT64111 PCI routines and GT64120 PCI_0 routines.
GT64111 PCI is almost the same as GT64120's PCI_0.
This patch don't change GT64120 PCI routines.
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
arch/s390/appldata/appldata_base.c has some confusing debugging code left
over to allow compiling it as a module. In practice, it cannot be configured
as module and there is no need to keep that code.
Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The clock synchronization of the ETR code requires an smp_call_function
to synchronize all cpus. Calling smp_call_function from a tasklet is
illegal. Replace the tasklet with a job on the global workqueue.
ETR work is rare and can be postponed to a be done by a kernel thread.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Generate uevents for all cpus if cpu capability changes. This can
happen e.g. because the cpus are overheating. The cpu capability can
be read via /sys/devices/system/cpu/cpuN/capability.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
s390 machines provide hardware support for creating Linux dumps on SCSI
disks. For creating a dump a special purpose dump Linux is used. The first
32 MB of memory are saved by the hardware before the dump Linux is
booted. Via an SCLP interface, the saved memory can be accessed from
Linux. This patch exports memory and registers of the crashed Linux to
userspace via a debugfs file. For more information refer to
Documentation/s390/zfcpdump.txt, which is included in this patch.
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Recent cvs versions of gcc have support for an improved stack overflow
checking that calculates the size of the guard size for each function.
If the compiler accepts -mstack-size without -mstack-guard then the
new stack check is available. We always want to use the new stack
checker.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Simplify the signal_return function that checks for the two special
system calls sigreturn and rt_sigreturn. No need to do a page table
walk, a call to copy_from_user while disabled page faults will work
as well.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
The minor fault path has grown a lot in terms of cycles. In particular
the kprobes hook is very costly. Optimize the path to save a couple of
cycles. If kprobes is enabled more than 300 cycles can be avoided if
kprobes_running() is false.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Generic bug implementation for s390. Will increase the value of the
console output on BUG() statements since registers r0-r5,r14 will
not be clobbered by a printk() call that was previously done before
the illegal instruction of BUG() was hit.
Also implements an architecture specific WARN_ON(). Output of that
could be increased but requires common code change.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This patch adds two improvements to the oops output. First it adds an
additional line after the PSW which decodes the different fields of it.
Second a disassembler is added that decodes the instructions surrounding
the faulting PSW. The output of a test oops now looks like this:
kernel BUG at init/main.c:419
illegal operation: 0001 [#1]
CPU: 0 Not tainted
Process swapper (pid: 0, task: 0000000000464968, ksp: 00000000004be000)
Krnl PSW : 0700000180000000 00000000000120b6 (rest_init+0x36/0x38)
R:0 T:1 IO:1 EX:1 Key:0 M:0 W:0 P:0 AS:0 CC:0 PM:0 EA:3
Krnl GPRS: 0000000000000003 00000000004ba017 0000000000000022 0000000000000001
000000000003a5f6 0000000000000000 00000000004be6a8 0000000000000000
0000000000000000 00000000004b8200 0000000000003a50 0000000000008000
0000000000516368 000000000033d008 00000000000120b2 00000000004bdee0
Krnl Code: 00000000000120a6: e3e0f0980024 stg %r14,152(%r15)
00000000000120ac: c0e500014296 brasl %r14,3a5d8
00000000000120b2: a7f40001 brc 15,120b4
>00000000000120b6: 0707 bcr 0,%r7
00000000000120b8: eb7ff0500024 stmg %r7,%r15,80(%r15)
00000000000120be: c0d000195825 larl %r13,33d108
00000000000120c4: a7f13f00 tmll %r15,16128
00000000000120c8: a7840001 brc 8,120ca
Call Trace:
([<00000000000120b2>] rest_init+0x32/0x38)
[<00000000004be614>] start_kernel+0x37c/0x410
[<0000000000012020>] _ehead+0x20/0x80
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Remove system call glue for sys_clone, sys_fork, sys_vfork, sys_execve,
sys_sigreturn, sys_rt_sigreturn and sys_sigaltstack. Call do_execve from
kernel_execve directly, move pt_regs to the right place and branch to
sysc_return to start the user space program. This removes the last
in-kernel system call.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Clean interface between cio and ipl code, so Peter stops complaining.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
If both sclp and diag memory detection don't work stop at the first
memory hole. Otherwise the code might loop forever...
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Remove the clearly useless config option GENERIC_BUST_SPINLOCK, which
is not used anywhere in the tree.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Reorder some instructions and change the register usage to reduce
the number of pipeline stalls. Also use the bfextu and bfins
instructions for bitfield manipulations instead of shifting and
masking.
This makes gzipping a 80MB file approximately 2% faster.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Since the core setup code takes care of both allocation and
reservation of framebuffer memory, there's no need for this board-
specific hook anymore. Replace it with two global variables,
fbmem_start and fbmem_size, which can be used directly.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
With the current strategy of using the bootmem allocator to allocate
or reserve framebuffer memory, there's a slight chance that the
requested area has been taken by the boot allocator bitmap before we
get around to reserving it.
By inserting the framebuffer region as a reserved region as early as
possible, we improve our chances for success and we make the region
visible as a reserved region in dmesg and /proc/iomem without any
extra work.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Use struct resource to specify both physical memory regions and
reserved regions and push everything into the same framework,
including kernel code/data and initrd memory. This allows us to get
rid of many special cases in the bootmem initialization and will also
make it easier to implement more robust handling of framebuffer
memory later.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Fix the I/O access macros so that they work with externally connected
devices accessed in little-endian mode over any bus width:
* Use a set of macros to define I/O port- and memory operations
borrowed from MIPS.
* Allow subarchitecture to specify address- and data-mangling
* Implement at32ap-specific port mangling (with build-time
configurable bus width. Only one bus width at a time supported
for now.)
* Rewrite iowriteN and friends to use write[bwl] and friends
(not the __raw counterparts.)
This has been tested using pata_pcmcia to access a CompactFlash card
connected to the EBI (16-bit bus width.)
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Fix a problem with the NMI handler entry code related to the NMI handler
sharing some code with the exception handlers. This is not a good idea
because the RSR and RAR registers are not the same, and the NMI handler
runs with interrupts masked the whole time so there's no need to check
for pending work.
Open-code the low-level NMI handling logic instead so that the pt_regs
layout is actually correct when the higher-level handler is called.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* Use generic BUG() handling
* Remove some useless debug statements
* Use a common function _exception() to send signals or oops when
an exception can't be handled. This makes sure init doesn't
enter an infinite exception loop as well. Borrowed from powerpc.
* Add some basic exception tracing support to the page fault code.
* Rework dump_stack(), show_regs() and friends and move everything
into process.c
* Print information about configuration options and chip type when
oopsing
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Clean up the cpu identification code, using definitions from
<asm/sysreg.h> instead of hardcoded constants. Also, add a features
bitmap to struct avr32_cpuinfo to allow other code to make decisions
based upon what the running cpu is actually capable of.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Bring the code that sets the initial PM clock masks in line with the
comment preceding it by only enabling clocks that have users != 0.
Fix SM clock definition and avr32_hpt_init() so that the SM and TC0
clocks keep ticking.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
This patch puts the CPU in sleep 0 when doing nothing, idle. This will
turn of the CPU clock and thus save power. The CPU is waken again when
an interrupt occurs.
Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Due to limitation of the count-compare system timer (not able to
count when CPU is in sleep), the system timer had to be changed to
use a peripheral timer/counter.
The old COUNT-COMPARE code is still present in time.c as weak
functions. The new timer is added to the architecture directory.
This patch sets up TC0 as system timer The new timer has been tested
on AT32AP7000/ATSTK1000 at 100 Hz, 250 Hz, 300 Hz and 1000 Hz.
For more details about the timer/counter see the datasheet for
AT32AP700x available at
http://www.atmel.com/dyn/products/product_card.asp?part_id=3903
Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Include at32ap-specific Kconfig file from top-level Kconfig file. The
at32ap Kconfig is currently empty, but it will grow some machine-
specific options soon.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Complete the SMC configuration code by adding nwait and tdf
parameter. After this change, we support the same parameters as the
hardware.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
check_legacy_ioport makes only sense on PREP, CHRP and pSeries.
They may have an isa node with PS/2, parport, floppy and serial ports.
Remove the check_legacy_ioport call from ppc_md, it's not needed
anymore. Hardware capabilities come from the device-tree.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The uppermost part of memory is where u-boot puts the stack, so don't
include that in the heap. It's not currently causing problems, as the
current code allocates from the bottom of the heap, but this will keep
things from potentially breaking if a future implementation were to
allocate from the top.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This fixes a few bugs in how dt_xlate_reg() handles address arrays:
1. copy_val() was copying into the wrong end of the array, resulting
in random stack garbage at the other end.
2. dt_xlate_reg() was getting the result from the wrong end of the array.
3. add_reg() and sub_reg() were treating the arrays as
little-endian rather than big-endian.
4. add_reg() only returned an error on a carry out of the entire
array, rather than out of the naddr portion.
5. The requested reg resource was checked to see if it exceeded
the size of the reg property, but not to see if it exceeded the
size of the buffer.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Change the error message in gunzip_exactly to be more verbose.
Besides the identifier being unrelated to the current function name,
the user had no indication if the corruption was near the beginning
or the end.
Signed-off-by: Milton Miller <miltonm@bga.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
make help on powerpc says make install is available.
But it failed due to no rule to make install.
This patch enables make install to work.
Signed-off-by: Akinobu Mita <mita@fixstars.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The string load/store instructions are unimplemented on some processors
and slow (microcoded) on some others. It's simplest to just not use
them at all.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Whenever we enter xmon we get a WARN_ON out of the rtas code since it
thinks interrupts are still on:
Unable to handle kernel paging request for data at address 0x00000000
Faulting instruction address: 0xd000000000080008
cpu 0x3: Vector: 300 (Data Access) at [c0000000075dba00]
pc: d000000000080008: .doit+0x8/0x40 [oopser]
lr: c000000000077704: .sys_init_module+0x1664/0x1824
sp: c0000000075dbc80
msr: 9000000000009032
dar: 0
dsisr: 42000000
current = 0xc000000003fa64b0
paca = 0xc000000000694280
pid = 2260, comm = insmod
------------[ cut here ]------------
Badness at arch/powerpc/kernel/entry_64.S:651
Call Trace:
[C0000000075DAE70] [C00000000000EB64] .show_stack+0x68/0x1b0 (unreliable)
[C0000000075DAF10] [C000000000216254] .report_bug+0x94/0xe8
[C0000000075DAFA0] [C00000000047B140] __kprobes_text_start+0x178/0x584
[C0000000075DB040] [C0000000000044F4] program_check_common+0xf4/0x100
Signed-off-by: Paul Mackerras <paulus@samba.org>
Convert a compound if-else blob to a switch statement.
This better fits the kernel coding style.
Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This adds register and clock definitions for the High-speed bus Matrix
(HMATRIX) as well as a function that can be used to configure special
EBI functionality like CompactFlash and NAND flash support.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cpufreq driver for PA Semi PWRficient processors.
Signed-off-by: Egor Martovetsky <egor@pasemi.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
arch/powerpc/platforms/pasemi/gpio_mdio.c really depends on CONFIG_PHYLIB.
Add a config option for it, allow for it to be disabled if needed and fix
the dependency.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
arch/powerpc/platforms/pasemi/setup.c: In function 'pasemi_publish_devices':
arch/powerpc/platforms/pasemi/setup.c:220: warning: implicit declaration of function 'of_platform_bus_probe'
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Adds proper lines to help output of kconfig so people can find the module names.
Also fixed some broken leading spaces versus tabs.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Dave Jones <davej@redhat.com>
There is something wrong with this code. It needs more
testing. It is better to disable it for now because support
for some machines will be broken.
Signed-off-by: Rafal Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
Replace obsolete pci_find_device with pci_get_device.
Signed-off-by: Rafal Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
A couple of routines need their arguments to be const.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This starts bringing the PowerPC and Sparc64 implemetations back closer
together.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
It should be set to the total number of pages that the
system will really have available after things like
initmem, the bootmem map, and initrd are freed up.
Signed-off-by: David S. Miller <davem@davemloft.net>
While useful in odd circumstances to debug something, they are
normally totally unused and anyone can fetch this code out of the
history if they really need it.
And in any event, the person who needs this kind of code is usually me
:-)
Signed-off-by: David S. Miller <davem@davemloft.net>
__get_phys is only called from init.c as is prom_virt_to_phys(),
__get_iospace() is not called at all, and sun4u_get_pte() is largely
misnamed.
Privatize the implementation and helper functions of
sun4u_get_phys() to mm/init.c, and rename to
kvaddr_to_paddr().
The only used of this thing is flush_icache_range(), and thus
things can be considerably further simplified. For example,
we should only see module or PAGE_OFFSET kernel addresses here,
so we don't need the OBP firmware range handling at all.
Signed-off-by: David S. Miller <davem@davemloft.net>
Kick out empty entries as soon as we spot them, and use memmove()
instead of a silly loop to make the operation more clear.
Signed-off-by: David S. Miller <davem@davemloft.net>
Decrease the SECTION_SIZE_BITS --> MAX_PHYSADDR_BITS
range a little bit.
The cost of going to SPARSEMEM_STATIC becomes 8K of BSS space, and in
return we save a pointer dereferences on every page struct lookup.
Even better we hit the main kernel image for the base address which is
in a hugepage locked TLB entry.
Signed-off-by: David S. Miller <davem@davemloft.net>
This helps deal with the invisible bridge that sits between
the host controller and the top-most visisble PCI devices
on hypervisor systems.
For example, on T1000 the bus-range property says 2 --> 4
and so there is a PCI express bridge at bus 2, devfn 0, etc.
So if we don't force the dummy host controller to bus zero,
we'll try to create two devices with the same domain/bus/devfn
triplet.
Also, add some more log diagnostics to make debugging stuff like this
easyer.
Signed-off-by: David S. Miller <davem@davemloft.net>
We fake up a dummy one in all cases because that is the simplest
thing to do and it happens to be necessary for hypervisor systems.
Signed-off-by: David S. Miller <davem@davemloft.net>
We don't do the "Simba APB is a PBM" bogosity for Sabre
controllers any longer, so this pbms_same_domain thing
is no longer necessary.
Signed-off-by: David S. Miller <davem@davemloft.net>
The SIMBA APB bridge is strange, it is a PCI bridge but it lacks
some standard OF properties, in particular it lacks a 'ranges'
property.
What you have to do is read the IO and MEM range registers in
the APB bridge to determine the ranges handled by each bridge.
So fill in the bus resources by doing that.
Since we now handle this quirk in the generic PCI and OF device
probing layers, we can flat out eliminate all of that code from
the sabre pci controller driver.
In fact we can thus eliminate completely another quirk of the sabre
driver. It tried to make the two APB bridges look like PBMs but that
makes zero sense now (and it's questionable whether it ever made sense).
So now just use pbm_A and probe the whole PCI hierarchy using that as
the root.
This simplification allows many future cleanups to occur.
Also, I've found yet another quirk that needs to be worked around
while testing this. You can't use the 'class-code' OF firmware
property, especially for IDE controllers. We have to read the value
out of PCI config space or else we'll see the value the device was
showing before it was programmed into native mode.
I'm starting to think it might be wise to just read all of the values
out of PCI config space instead of using the OF properties. :-/
Signed-off-by: David S. Miller <davem@davemloft.net>
Need to traverse recursively down child busses else we only
get the file created under devices at the top-level.
Signed-off-by: David S. Miller <davem@davemloft.net>
The only user was bus_dvma_to_mem() which is no longer used
by any driver, so kill that, and the export of pci_memspace_mask.
The only user now is the PCI mmap support code.
Signed-off-by: David S. Miller <davem@davemloft.net>
Almost entirely taken from the 64-bit PowerPC PCI code.
This allowed to eliminate a ton of cruft from the sparc64
PCI layer.
Signed-off-by: David S. Miller <davem@davemloft.net>
Also, do not try to compute resources by hand, instead use
the pre-computed ones in the of_device.
Signed-off-by: David S. Miller <davem@davemloft.net>
This allows us to simplify sharing code with powerpc which
has properties that have various forms of capitalization
when on the sparc64 side the property is all lower-case.
Signed-off-by: David S. Miller <davem@davemloft.net>
This starts bringing the PowerPC and Sparc implemetations back closer
together.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Finally, we actually change the functions themselves.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Removes days_in_mo[], as it's almost identical to month_days[]
- Use the leapyear() macro
- Line length wrapping.
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
I'd like to thank John Stul and others for helping
me along the way.
A lot of cleanups fell out of this. For example, the get_compare()
tick_op was totally unused, so was deleted. And the most often used
tick_op members were grouped together for cache-friendlyness.
The sparc64 TSC is given to the kernel as a one-shot timer.
tick_ops->init_timer() simply turns off the privileged bit in
the tick register (when possible), and disables the interrupt
by setting bit 63 in the compare register. The ->disable_irq()
op also sets this bit.
tick_ops->add_compare() is changed to:
1) Add the given delta to "tick" not to "compare"
2) Return a boolean which, if true, means that the tick
value read after writing the compare value was found
to have incremented past the initial tick value. This
mirrors logic used in the HPET driver's ->next_event()
method.
Each tick_ops implementation also now provides a name string.
And we feed this into the clocksource and clockevents layers.
Signed-off-by: David S. Miller <davem@davemloft.net>
Things were scattered all over the place, split between
SMP and non-SMP.
Unify it all so that dyntick support is easier to add.
Signed-off-by: David S. Miller <davem@davemloft.net>
Allow s390 to properly override the generic
__div64_32() implementation by:
1) Using obj-y for div64.o in s390's makefile instead
of lib-y
2) Adding the weak attribute to the generic implementation.
Signed-off-by: David S. Miller <davem@davemloft.net>
To clearly state the intent of copying to linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.
Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Network drivers which keep stats allocate their own stats structure
then write a get_stats() function to return them. It would be nice if
this were done by default.
1) Add a new "stats" field to "struct net_device".
2) Add a new feature field to say "this driver uses the internal one"
3) Have a default "get_stats" which returns NULL if that feature not set.
4) Change callers to check result of get_stats call for NULL, not if
->get_stats is set.
This should not break backwards compatibility with older drivers, yet
allow modern drivers to shed some boilerplate code.
Lightly tested: works for a modified lguest network driver.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
To clearly state the intent of copying from linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Now to convert the last one, skb->data, that will allow many simplifications
and removal of some of the offset helpers.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes
on 64bit architectures, allowing us to combine the 4 bytes hole left by the
layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4
64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN...
:-)
Many calculations that previously required that skb->{transport,network,
mac}_header be first converted to a pointer now can be done directly, being
meaningful as offsets or pointers.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For the places where we need a pointer to the mac header, it is still legal to
touch skb->mac.raw directly if just adding to, subtracting from or setting it
to another layer header.
This one also converts some more cases to skb_reset_mac_header() that my
regex missed as it had no spaces before nor after '=', ugh.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For the common, open coded 'skb->mac.raw = skb->data' operation, so that we can
later turn skb->mac.raw into a offset, reducing the size of struct sk_buff in
64bit land while possibly keeping it as a pointer on 32bit.
This one touches just the most simple case, next will handle the slightly more
"complex" cases.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
One less thing for drivers writers to worry about.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The following patch prevent this warning to be displayed again & again (eg:
nine times on my NForce2 motherboard) and thus improve signal to noise
ratio in logs.
The ATI quirk below probably needs a similar "fix" but I don't have
the hardware to test.
Btw arch/x86_64/kernel/early-quirks.c::nvidia_bugs() would probably need to
be synced (but I don't have an x86_64 NVidia motherboard to boot test it).
Still it shows the usefullity of the recent x86 merge thread.
[akpm@linux-foundation.org: cleanup]
Signed-off-by: Thierry Vignaud <tvignaud@mandriva.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
This did cause oprofile to fail on non-multithreaded systems with more
than 2 processors such as the BCM1480.
Reported by Manish Lachwani (mlachwani@mvista.com).
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
pci_find_slot isn't hot-plug safe. Move this code to the pci hotplug
safe equivalent and hold a refcount properly while doing
make_one_node_map.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
32-bit powerpc systems define a macro, PHYS_FMT, giving a printf
format string fragment for displaying physical addresses, since most
32-bit powerpc platforms use 32-bit physical addresses but a few use
64-bit physical addresses.
This macro is used in exactly one place, a rare error message, where
we can solve the problem more simply by just unconditionally casting
the address up to 64-bit quantity before formatting it.
This patch does so, meaning that as we bring MMU definitions from
asm-ppc over to asm-powerpc, cleaning them up in the process, we don't
need to implement this ugly macro (which additionally has a very bad
name for something global).
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Replace uses with of_find_node_by_name and for_each_node_by_name.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This is an old interface and is replaced by of_find_compatible_node.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
BenH's commit a741e67969 in powerpc.git,
although (AFAICT) only intended to affect ppc64, also has side-effects
which break 44x. I think 40x, 8xx and Freescale Book E are also
affected, though I haven't tested them.
The problem lies in unconditionally removing flush_tlb_pending() from
the versions of flush_tlb_mm(), flush_tlb_range() and
flush_tlb_kernel_range() used on ppc64 - which are also used the
embedded platforms mentioned above.
The patch below cleans up the convoluted #ifdef logic in tlbflush.h,
in the process restoring the necessary flushes for the software TLB
platforms. There are three sets of definitions for the flushing
hooks: the software TLB versions (revised to avoid using names which
appear to related to TLB batching), the 32-bit hash based versions
(external functions) amd the 64-bit hash based versions (which
implement batching).
It also moves the declaration of update_mmu_cache() to always be in
tlbflush.h (previously it was in tlbflush.h except for PPC64, where it
was in pgtable.h).
Booted on Ebony (440GP) and compiled for 64-bit and 32-bit
multiplatform.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Save the trap number in the case of getting a bad stack in an exception
handler. It is sometimes useful to know what exception it was that caused
this to happen. Without this, no trap number is reported.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Rename MPIC_BROKEN_U3 to something a little more descriptive. Its
effect is to enable support for HT irqs behind the PCI-X/HT bridge on
U3/U4 (aka. CPC9x5) parts.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Use `unsigned long' for malloc sizes, to match common practice and types used
by most callers and callees.
Also use `unsigned long' for integers representing pointers in simple_alloc.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@eu.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This patch adds a driver to arch/powerpc/sysdev for the UIC, the
on-chip interrupt controller from IBM/AMCC 4xx chips. It uses the new
irq host mapping infrastructure.
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Now that we always take a device tree in arch/powerpc, there's no good
reason not to allow a single kernel to support multiple embedded 4xx
boards - the correct platform code can be selected based on the device
tree information.
Therefore, this patch re-arranges the 4xx Kconfig code to allow this.
In addition we:
- use "select" instead of depends to configure the correct
config options for specific 4xx CPUs and workarounds, which
makes the information about specific boards and CPUs less
scattered.
- Some old, unused (in arch/powerpc) config options are
removed: WANT_EARLY_SERIAL, IBM_OCP, etc.
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
For cases when probes are placed on instructions that can be emulated,
don't take the single-step exception.
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Emulate a few more instructions in software - especially useful during
singlestepping (xmon/kprobes).
Instructions emulated with this patch are mfcr/mtcr rX, mfxer/mtxer rX,
mflr/mtlr rX, mfctr/mtctr rX and mr rA,rB.
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This adds cuboot support for MPC83xx platforms.
A device tree used with this must have linux,stdout-path in /chosen and
linux,network-index in any network device nodes that need mac addresses
assigned.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This file describes the bd_t struct, which is used by old versions of
U-boot to pass information to the kernel. Platform code that needs to
interoperate with such firmware can use this; it should not be used for
anything new.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The cuImage target will build a uImage with bootwrapper code and a device
tree. The default device tree and platform file are determined by the
kernel configuration.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This provides a way to tell the bootwrapper makefile which device tree to
include by default. The wrapper can still be invoked standalone to wrap
with a different device tree without reconfiguring the kernel, if that is
desired.
The user will only be asked to provide a device tree if the platform
selects CONFIG_WANT_DEVICE_TREE.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
MDIO driver for PHY's connected via GPIO as on the PA Semi Electra
eval board.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Oprofile support for PA6T, kernel side.
Also rename the PA6T_SPRN.* defines to SPRN_PA6T.*.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Reset MPIC on boot to clear some timer state that firmware might
leave configured.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Minor HID change. Firmware can't know that we want this set so we have
to set it in the kernel.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Device 0 function 0 on the root bus is really a two-function bus agent,
but only the first function is visible. Because of this, we need to
allow config accesses into the second range. Modify the check for valid
offsets accordingly.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
PowerPC 750CL has high BATs. The patch below adds a CPU_FTRS_750CL that
includes that. Without it, the original firmware mappings in the high BATs
aren't cleared which continue to override the linux translations.
It also adds CPU_FTR_COMMON to CPU_FTRS_750GX for completeness.
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
change_page_attr on x86-64 only flushed the TLB for pages that got
reverted. That's not correct: it has to be flushed in all cases.
This bug was added in some earlier changes.
Just flush all pages for now.
This could be done more efficiently, but for this late in the release
this seem to be the best fix.
Pointed out by Jan Beulich
Signed-off-by: Andi Kleen <ak@suse.de>
noreplacement is dangerous on modern systems because it will not replace the
context switch FNSAVE with SSE aware FXSAVE. But other places in the kernel still assume
SSE and do FXSAVE and the CPU will then access FXSAVE information with
FNSAVE and cause corruption.
Easiest way to avoid this is to remove the option. It was mostly for paranoia
reasons anyways and alternative()s have been stable for some time.
Thanks to Jeremy F. for reporting and helping debug it.
Signed-off-by: Andi Kleen <ak@suse.de>
This patches fixes the silent data corruption problems being seen using the
GART iommu where 4kB of data where incorrect (seen mostly on Nvidia CK804
systems). This fix, to mark the memory regin the GART PTEs reside on as
uncacheable, also brings the code in line with the AGP specification.
Signed-off-by: Joachim Deguara <joachim.deguara@amd.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Sync with the Kconfig changes, and enable some options for celleb
Cc: Ishizaki Kou <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Jens Osterkamp <jens@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Enable Periodic Recalibration (PTCAL) support for Cell XDR memory,
using the new ibm,cbe-start-ptcal and ibm,cbe-stop-ptcal RTAS calls.
Tested on QS20 and QS21 (by Thomas Huth). It seems that SLOF has
problems disabling, at least on QS20; this patch should only be
used once these problems have been addressed.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
This patch adds support for a proper device-tree.
A porper device-tree on cell contains be nodes
for each CBE containg nodes for SPEs and all the
other special devices on it.
Ofcourse oldschool devicetree is still supported.
Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
The of_iomap function maps memory for a given
device_node and returns a pointer to that memory.
This is used at some places, so it makes sense to
a seperate function.
Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
At the moment the pmi device driver is probing for devices with
a given type and a given name. As there may be devices of
the same type but with a different name, probing should be
done also for device type only.
Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
This patch adds a check for the private driver data to be initialized.
The bug showed up, as the caller found a pmi device by it's type.
Whereas the pmi driver probes for the type and the name.
Since the name was not as the driver expected, it did not initialize.
A more relaxed probing will be supplied with an extra patch, too.
Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
The new PMI driver was added in order to support
cpufreq on blades that require the frequency to
be controlled by the service processor, so use it
on those.
Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
This patch adds some attributes the cpu and spu nodes:
/sys/devices/system/[c|s]pu/[c|s]pu*/thermal/throttle_begin
/sys/devices/system/[c|s]pu/[c|s]pu*/thermal/throttle_end
/sys/devices/system/[c|s]pu/[c|s]pu*/thermal/throttle_full_stop
Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
This patch introduces a little function for transforming
register values into temperature.
Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
This patch adds code to deal with conversion of
logical cpu to cbe nodes. It removes code that
assummed there were two logical CPUs per CBE.
Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
This change fixes the case where spu_base and spufs are initialised on a
system with no SPEs - unconditionally create the spu_lists so spu_alloc
doesn't explode, and check for spu_management ops before starting spufs.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
arch/powerpc/platforms/cell/spu_base.c | 7 ++++---
arch/powerpc/platforms/cell/spufs/inode.c | 5 +++++
2 files changed, 9 insertions(+), 3 deletions(-)
spu_base.c is always built into the kernel image, so there is no need
for a cleanup function. And some of the things it does are in the
way for my following patches, so I'd rather get rid of it ASAP.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
- remove the spu_acquire_runnable from spu_run_init. I need to
opencode it in spufs_run_spu in the next patch
- remove various inline attributes, we don't really want to inline
long functions with multiple callsites
- cleanup return values and runcntl_write calls in spu_run_init
- use normal kernel codingstyle in spu_reacquire_runnable
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
spu_coredump_calls.owner is NULL in case of a builtin spufs,
so the checks in here break.
Check for the availability of the spu_coredump_calls variable
instead.
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Dynamically allocated read/write buffer in spufs_arch_write_note() will
not be freed. Convert it to get_free_page at the same time.
Cc: Akinobu Mita <mita@fixstars.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Change the loop in spu_wait to be a little more straightforward.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Add a 'mode=' option to spufs mount arguments. This allows more
control over access to the top-level spufs directory.
Tested on Cell.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
GCC may generates inline copy loop to handle memcpy() function
instead of kernel defined memcpy(). But this inlined version of memcpy()
causes an alignment interrupt when copying from local store.
This patch uses memcpy_fromio() and memcpy_toio to copy local store
to prevent memcpy() being inlined.
Signed-off-by: Akinobu Mita <mita@fixstars.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
We now have proper locking around assignets of the mapping pointers,
and the spin_unlock implies enough of a barrier to get rid of the
explicit one.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
When SPU isolation mode enabled, isolated_loader would be
allocated by spufs_init_isolated_loader() on module_init().
But anyone do not free it.
This patch introduces spufs_exit_isolated_loader() which is
the opposite of spufs_init_isolated_loader() and called on
module_exit().
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Akinobu Mita <mita@fixstars.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
spufs module_init forgot to call a few cleanup functions
on error path. This patch also includes cosmetic changes in
spu_sched_init() (identation fix and return error code).
[modified by hch to apply ontop of the latest schedule changes]
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Akinobu Mita <mita@fixstars.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
This patch checks return value of spu_acquire_runnable() in
spufs_mfc_write().
Signed-off-by: Akinobu Mita <mita@fixstars.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
There is no reason for run_sema to be a struct semaphore. Changing
it to a mutex and rename it accordingly.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
This change populates a siginfo struct for SPE application exceptions
(ie, invalid DMAs and illegal instructions).
Tested on an IBM Cell Blade.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Until now, we have always entered the spu page fault handler
with a mutex for the spu context held. This has multiple
bad side-effects:
- it becomes impossible to suspend the context during
page faults
- if an spu program attempts to access its own mmio
areas through DMA, we get an immediate livelock when
the nopage function tries to acquire the same mutex
This patch makes the page fault logic operate on a
struct spu_context instead of a struct spu, and moves it
from spu_base.c to a new file fault.c inside of spufs.
We now also need to copy the dar and dsisr contents
of the last fault into the saved context to have it
accessible in case we schedule out the context before
activating the page fault handler.
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
There is no reason to execute spu_init_channels under spu_mutex
after the spu has been taken off the freelist it's ours.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Addition to stop_wq needs to happen before adding to the runqeueue and
under the same lock so that we don't have a race window for a lost
wake up in the spu scheduler.
Signed-off-by: Luke Browning <lukebrowning@us.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
For quite a while now spu state is protected by a simple mutex instead
of the old rw_semaphore, and this means we can simplify the locking
around spu_setup_isolated a lot.
Instead of doing an spu_release before entering spu_setup_isolated and
then calling the complicated spu_acquire_exclusive we can now simply
enter the function locked an in guaranteed runnable state, so that the
only bit of spu_acquire_exclusive that's left is the call to
spu_unmap_mappings.
Similarly there's no more need to unlock and reacquire the state_mutex
when spu_setup_isolated is done, but we can always return with the
lock held and only drop it in spu_run_init in the failure case.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
A single context should only be woken once, and we should not have
more wakeups for a given priority than the number of contexts on
that runqueue position.
Also add some asserts to trap future problems in this area more
easily.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
set_bit does not guarantee ordering on powerpc, so using it
for communication between threads requires explicit
mb() calls.
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
To not lose a spu thread we need to make sure it always gets put back
on the runqueue. In find_victim aswell as in the scheduler tick as done
in the previous patch.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
To not lose a spu thread we need to make sure it always gets put back
on the runqueue.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Make sure the pointers to various mappings are cleared once the last
user stopped using them. This avoids accessing freed memory when
tearing down the gang directory aswell as optimizing away
pte invalidations if no one uses these.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
The scheduler workqueue may rearm itself and deadlock when we try to stop
it. Put a flag in place to avoid skip the work if we're tearing down
the context.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Convert the AMBA PL010 serial driver to use the clock infrastructure
to allow EP93xx platforms to properly gate the clock to the UARTs.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Use a mutex in the sa1100 clock support rather than a semaphore.
Remove the unused "module" field.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch removes the unnecessary bit number from CKENnn_XXXX
definitions for PXA, so that
CKEN0_PWM0 --> CKEN_PWM0
CKEN1_PWM1 --> CKEN_PWM1
...
CKEN24_CAMERA --> CKEN_CAMERA
The reasons for the change of these defitions are:
1. they do not scale - they are currently valid for pxa2xx, but
definitely not valid for pxa3xx, e.g., pxa3xx has bit 3 for camera
instead of bit 24
2. they are unnecessary - the peripheral name within the definition
has already announced its usage, we don't need those bit numbers
to know which peripheral we are going to enable/disable clock for
3. they are inconvenient - think about this: a driver programmer
for pxa has to remember which bit in the CKEN register to turn
on/off
Another change in the patch is to make the definitions equal to its
clock bit index, so that
#define CKEN_CAMERA (24)
instead of
#define CKEN_CAMERA (1 << 24)
this change, however, will add a run-time bit shift operation in
pxa_set_cken(), but the benefit of this change is that it scales
when bit index exceeds 32, e.g., pxa3xx has two registers CKENA
and CKENB, totally 64 bit for this, suppose CAMERA clock enabling
bit is CKENB:10, one can simply define CKEN_CAMERA to be (32 + 10)
and so that pxa_set_cken() need minimum change to adapt to that.
Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Update OMAP1 to enable support for hrtimers and dynticks by using new clocksource and clockevent infrastructure.
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Update Versatile platform to use new clockevent infrastructure.
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Update Versatile to use new clocksource infrastructure for basic timekeeping.
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Update ixp4xx timer support to use new clockevent infrastructure.
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
And, wrap timer_tick() and sysdev suspend/resume in
!GENERIC_CLOCKEVENTS since clockevent layer takes care
of these.
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This time with LEDS_TIMER set with !GENERIC_CLOCKEVENTS
Signed-off-by: Kevin Hilman <khilman@mvista.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add the picotux 200 ARM board:
- Enable its machine type in the filter in head.S
- Add configuration option
- Add board initialisation
- Add default configuration
Signed-off-by: Simon Richter <Simon.Richter@kleinhenz.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add Kconfig entry for SMDK2412 to go with the SMDK2413
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fix the following sparse errors in arch/arm/plat-s3c24xx/dma.c:
dma.c:47:30: warning: symbol 'dma_sel' was not declared. Should it be static?
dma.c:883:6: warning: symbol 's3c2410_dma_waitforstop' was not declared. Should it be static?
dma.c:961:1: warning: symbol 's3c2410_dma_started' was not declared. Should it be static?
dma.c:1283:12: warning: symbol 's3c24xx_dma_sysclass_init' was not declared. Should it be static?
dma.c:1295:12: warning: symbol 's3c24xx_dma_sysdev_register' was not declared. Should it be static?
dma.c:1399:25: warning: symbol 's3c2410_dma_map_channel' was not declared. Should it be static?
The patch makes all the relevant functions static.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Remove the use of struct s3c24xx_board as
this is just as easily done by using the
platform device registration functions to
make the initialisation sequence easier.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Remove the clocks from the s3c24xx_board as part
of the process of simplifying the initialisation
sequence by removing struct s3c24xx_board.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The support for that machine is not yet complete, but it's enough to
be useful as a test platform for the serial and ethernet driver.
Moreover a typo in the product name is fixed that I missed in the
last patch.
Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add Intel KIXRP435 Reference Platform based on IXP43x processor.
Fixed after review : access to cp15 removed in identification functions,
used access to global processor_id instead
Signed-off-by: Vladimir Barinov <vbarinov@ru.mvista.com>
Signed-off-by: Ruslan Sushko <rsushko@ru.mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch brings generic gpio layer support to ixp4xx. It creates
functions needed for gpio->irq and irq->gpio translation.
It expects and initial value to be passed to
gpio_direction_output() which has been introduced by
commit 28735a7253 in Linus git tree.
Generic gpio layer is going to be used by pxa2xx_udc driver.
Signed-off-by: Milan Svoboda <msvoboda@ra.rockwell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add prot_pte_ext to the mem_types table to allow the extended pte
attributes to be passed to set_pte_ext(), thereby permitting us to
specify memory type information for the hardware PTE entries.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
We really want to be using the memory type table in ioremap, so we
only have to do the CPU type fixups in one place.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Rather than our three separate loops to setup mappings (by page
mappings up to a section boundary, then section mappings, and the
remainder by page mappings) convert this to a more conventional
Linux style of a loop over each page table level.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Catalin Marinas at ARM Ltd says:
> The CPU architects in ARM intended supersections only as a way to map
> addresses >= 4GB. Supersections are not mandated by the architecture
> and there is no easy way to detect their hardware support at run-time
> (other than checking for a specific core). From the analysis done in
> ARM, there wasn't a clear performance gain by using supersections
> rather than sections (no significant improvement in the TLB misses).
Therefore, we should avoid using supersections unless there's a real
need (iow, we're mapping addresses >= 4GB).
This means that we can simplify create_mapping() a bit since we will
only use supersection mappings for addresses >= 4GB, which means that
the physical, virtual and length must be multiples of the supersection
mapping size.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
There's now no need to carry around each protection separately.
Instead, pass around the pointer to the entry in the mem_types
array which we're interested in.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Rather than combining the domain for a particular memory type with
the protection information each time we want to use it, do so when
we fix up the mem_type array at initialisation time.
Rename struct mem_types to be mem_type - each structure is one
memory type description, not several.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Lots of places in arch/arm were needlessly including linux/ptrace.h,
resumably because we used to pass a struct pt_regs to interrupt
handlers. Now that we don't, all these ptrace.h includes are
redundant.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Support for Longhaul ver. 2 broke driver for VIA C3 Eden 600MHz with
Samuel 2 core. Processor is not able to switch frequency anymore. I
don't know much about this issue at the moment, but until (if ever) I
will know why, this part should be reversed.
Signed-off-by: Rafal Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
With commit 63dc68a8cf, kernel can not
handle BUG() and BUG_ON() properly since get_user() returns false for
kernel code. Use __get_user() to skip unnecessary access_ok(). This
patch also make BRK_BUG code encoded in the TNE instruction.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The save_fp_context()/restore_fp_context() might sleep on accessing
user stack and therefore might lose FPU ownership in middle of them.
If these function failed due to "in_atomic" test in do_page_fault,
touch the sigcontext area in non-atomic context and retry these
save/restore operation.
This is a replacement of a (broken) fix which was titled "Allow CpU
exception in kernel partially".
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The commit 4d40bff7110e9e1a97ff8c01bdd6350e9867cc10 ("Allow CpU
exception in kernel partially") was broken. The commit was to fix
theoretical problem but broke usual case. Revert it for now.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Recent versions of the BCM112X processors aren't recognized by Linux
(preventing Linux from booting on those processors). This patch adds
support for those that are missing.
Signed-off-by: Mark Mason <mason@broadcom.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[BRIDGE]: Unaligned access when comparing ethernet addresses
[SCTP]: Unmap v4mapped addresses during SCTP_BINDX_REM_ADDR operation.
[SCTP]: Fix assertion (!atomic_read(&sk->sk_rmem_alloc)) failed message
[NET]: Set a separate lockdep class for neighbour table's proxy_queue
[NET]: Fix UDP checksum issue in net poll mode.
[KEY]: Fix conversion between IPSEC_MODE_xxx and XFRM_MODE_xxx.
[NET]: Get rid of alloc_skb_from_cache
arch/alpha/kernel/sys_sx164.c
Earlier firmware revisions need MVI fix as well.
arch/alpha/kernel/sys_nautilus.c
On UP1500 firmware reports wrong AGP IRQ (10 instead of 5).
This causes interrupt storm if there is a PCI device that
uses IRQ 5.
Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Files:
arch/alpha/kernel/core_mcpcia.c
arch/alpha/kernel/sys_rawhide.c
include/asm-alpha/core_mcpcia.h
Determine correct hose configuration; RAWHIDE family can have
2 or 4 hoses, so make sure non-existent hoses are ignored.
arch/alpha/kernel/err_titan.c
Supply a needed #include <asm/irq_regs.h>
arch/alpha/kernel/module.c
Add some useful output to the relocation overflow messages.
arch/alpha/kernel/sys_noritake.c
Supply necessary noritake_end_irq() to correct interrupt handling.
This fixes a problem first noted by hangs during boot probing with
a DE500-BA TULIP NIC present.
arch/alpha/kernel/sys_sio.c
Correct saving of original PIRQ register (PCI IRQ routing);
change default PIRQ setting to leave PCI IRQs 9 and 14 free to
be used for sound (Multia) and IDE (any), respectively.
include/asm-alpha/io.h
Supply the "isa_virt_to_bus" routine.
Signed-off-by: Jay Estabrook <jay.estabrook@hp.com>
Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Since this was added originally for Xen, and Xen has recently (~2.6.18)
stopped using this function, we can safely get rid of it. Good timing
too since this function has started to bit rot.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
cache_k8_northbridges() is storing config values to incorrect locations
(in flush_words) and also its overflowing beyond the allocation, causing
slab verification failures.
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Update defconfig to the latest kernel version
and enable the h1940 LED driver
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
While reviewing this code again I found a potential overflow of the bitmap.
The p4 oprofile can theoretically set bits beyond the reservation bitmap for
specific configurations. Avoid that by sizing the bitmaps properly.
Signed-off-by: Andi Kleen <ak@suse.de>
Due to an over aggressive optimizer gcc 4.2 cannot optimize away _proxy_pda
in all cases (counter intuitive, but true). This breaks loading of some
modules.
The earlier workaround to just export a dummy symbol didn't work unfortunately
because the module code ignores exports with 0 value.
Make it 1 instead.
Signed-off-by: Andi Kleen <ak@suse.de>
Fix logic error in VMI relocation processing. NOPs would always cause
a BUG_ON to fire because the != RELOCATION_NONE in the first if clause
precluding the == VMI_RELOCATION_NOP in the second clause. Make these
direct equality tests and just warn for unsupported relocation types
(which should never happen), falling back to native in that case.
Thanks to Anthony Liguori for noting this!
Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Provide a failsafe mechanism to avoid kernel spinning forever at
read_hpet_tsc during early kernel bootup.
This failsafe mechanism was originally introduced in commit
2f7a2a79c3, but looks like the hpet split
from time.c lost it again.
This reintroduces the failsafe mechanism
Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Shai Fultheim <shai@scalex86.org>
Cc: Jack Steiner <steiner@sgi.com>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
While building a test kernel for the new esp driver (against
git-current), I hit this bug. Trivial fix, put the inline declaration
in the right place. :)
Signed-off-by: Tom "spot" Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Do not sign extend args using the sys32_ipc stub, that is
buggy and unnecessary.
Based upon an excellent report by Mikael Pettersson.
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 79c8541924 introduced code to move
the initrd if it was in a place where it would get overwritten by the
kernel image. Unfortunately this exposed the fact that the code that
checks whether the values passed in r3 and r4 are intended to indicate
the start address and size of an initrd image was not as thorough as the
kernel's checks. The symptom is that on OF-based platforms, the
bootwrapper can cause an exception which causes the system to drop back
into OF.
Previously it didn't matter so much if the code incorrectly thought that
there was an initrd, since the values for start and size were just passed
through to the kernel. Now the bootwrapper needs to apply the same checks
as the kernel since it is now using the initrd data itself (in the process
of copying it if necessary). This adds the code to do that.
Signed-off-by: Paul Mackerras <paulus@samba.org>
* Cleaned up some whitespace in arch/powerpc/Kconfig
* Moved sourcing of platforms/embedded6xx/Kconfig into platform/Kconfig
* Moved sourcing of platforms/4xx/Kconfig into platform/Kconfig and disabled it
* Removed EMBEDDEDBOOT since its not supported in arch/powerpc
* Removed PC_KEYBOARD since its not used anywhere
* Moved a few CONFIG options around in platform/Kconfig
* Moved interrupt controllers into platform/Kconfig out of bus section
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Moved 8xx platform Kconfig over to being sourced by the unified
arch/powerpc/platforms/Kconfig. Also, cleaned up whitespace issues in 8xx
Kconfig.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Moved 82xx platform Kconfig over to being sourced by the unified
arch/powerpc/platforms/Kconfig. Also, cleaned up whitespace issues in 82xx
Kconfig.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Fix section mismatch in arch/sparc/kernel/pcic.c and
arch/sparc64/kernel/pci.c.
Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
I don't figure anyone really cares about SunOS syscall emulation, and I
certainly don't. But I'm getting rid of uses of the OPEN_MAX and CHILD_MAX
compile-time constant, and these are almost the only ones. OPEN_MAX is a
bogus constant with no meaning about anything. The RLIMIT_NOFILE resource
limit is what sysconf (_SC_OPEN_MAX) actually wants to return.
The CHILD_MAX cases weren't actually using anything I want to get rid of,
but I noticed that they are there and are wrong too. The CHILD_MAX value
is not really unlimited as a -1 return from sysconf indicates. The
RLIMIT_NPROC resource limit is what sysconf (_SC_CHILD_MAX) wants to return.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In some cases, multiple OFDT nodes might share the same location code, so
the location code is not a unique identifier for an OFDT node. Changed the
ibmebus probe/remove interface to use the DT path of the device node instead
of the location code.
The DT path must be written into probe/remove right as it would appear in
the "devspec" attribute of the ebus device: relative to the DT root, with a
leading slash and without a trailing slash. One trailing newline will not
hurt; multiple newlines will (like perl's chomp()).
Example:
Add a device "/proc/device-tree/foo@12345678" to ibmebus like this:
echo /foo@12345678 > /sys/bus/ibmebus/probe
Remove the device like this:
echo /foo@12345678 > /sys/bus/ibmebus/remove
Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Here's an implementation of DEBUG_PAGEALLOC for 64 bits powerpc.
It applies on top of the 32 bits patch.
Unlike Anton's previous attempt, I'm not using updatepp. I'm removing
the hash entries from the bolted mapping (using a map in RAM of all the
slots). Expensive but it doesn't really matter, does it ? :-)
Memory hot-added doesn't benefit from this unless it's added at an
address that is below end_of_DRAM() as calculated at boot time.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/Kconfig.debug | 2
arch/powerpc/mm/hash_utils_64.c | 84 ++++++++++++++++++++++++++++++++++++++--
2 files changed, 82 insertions(+), 4 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
Here's an implementation of DEBUG_PAGEALLOC for ppc32. It disables BAT
mapping and is only tested with Hash table based processor though it
shouldn't be too hard to adapt it to others.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/Kconfig.debug | 9 ++++++
arch/powerpc/mm/init_32.c | 4 +++
arch/powerpc/mm/pgtable_32.c | 52 +++++++++++++++++++++++++++++++++++++++
arch/powerpc/mm/ppc_mmu_32.c | 4 ++-
include/asm-powerpc/cacheflush.h | 6 ++++
5 files changed, 74 insertions(+), 1 deletion(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
On hash table based 32 bits powerpc's, the hash management code runs with
a big spinlock. It's thus important that it never causes itself a hash
fault. That code is generally safe (it does memory accesses in real mode
among other things) with the exception of the actual access to the code
itself. That is, the kernel text needs to be accessible without taking
a hash miss exceptions.
This is currently guaranteed by having a BAT register mapping part of the
linear mapping permanently, which includes the kernel text. But this is
not true if using the "nobats" kernel command line option (which can be
useful for debugging) and will not be true when using DEBUG_PAGEALLOC
implemented in a subsequent patch.
This patch fixes this by pre-faulting in the hash table pages that hit
the kernel text, and making sure we never evict such a page under hash
pressure.
Signed-off-by: Benjamin Herrenchmidt <benh@kernel.crashing.org>
arch/powerpc/mm/hash_low_32.S | 22 ++++++++++++++++++++--
arch/powerpc/mm/mem.c | 3 ---
arch/powerpc/mm/mmu_decl.h | 4 ++++
arch/powerpc/mm/pgtable_32.c | 11 +++++++----
4 files changed, 31 insertions(+), 9 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
The 32 bits map_page() function is used internally by the mm code
for early mmu mappings and for ioremap. It should never be called
for an address that already has a valid PTE or hash entry, so we
add a BUG_ON for that and remove the useless flush_HPTE call.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/mm/pgtable_32.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
The current tlb flush code on powerpc 64 bits has a subtle race since we
lost the page table lock due to the possible faulting in of new PTEs
after a previous one has been removed but before the corresponding hash
entry has been evicted, which can leads to all sort of fatal problems.
This patch reworks the batch code completely. It doesn't use the mmu_gather
stuff anymore. Instead, we use the lazy mmu hooks that were added by the
paravirt code. They have the nice property that the enter/leave lazy mmu
mode pair is always fully contained by the PTE lock for a given range
of PTEs. Thus we can guarantee that all batches are flushed on a given
CPU before it drops that lock.
We also generalize batching for any PTE update that require a flush.
Batching is now enabled on a CPU by arch_enter_lazy_mmu_mode() and
disabled by arch_leave_lazy_mmu_mode(). The code epects that this is
always contained within a PTE lock section so no preemption can happen
and no PTE insertion in that range from another CPU. When batching
is enabled on a CPU, every PTE updates that need a hash flush will
use the batch for that flush.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Make the alignment exception handler use the new _inatomic variants
of __get/put_user. This fixes erroneous warnings in the very rare
cases where we manage to have copy_tofrom_user_inatomic() trigger
an alignment exception.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/kernel/align.c | 56 ++++++++++++++++++++++++--------------------
1 file changed, 31 insertions(+), 25 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
The firmware assigns irq 20/21 to the VIA IDE device on Pegasos.
But the required interrupt is 14/15.
Maybe someone confused decimal vs. hexadecimal values.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This also fixes a bug where a property value was being modified
in place.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Some drivers have resources that they want to be able to map into
userspace that are 4k in size. On a kernel configured with 64k pages
we currently end up mapping the 4k we want plus another 60k of
physical address space, which could contain anything. This can
introduce security problems, for example in the case of an infiniband
adaptor where the other 60k could contain registers that some other
program is using for its communications.
This patch adds a new function, remap_4k_pfn, which drivers can use to
map a single 4k page to userspace regardless of whether the kernel is
using a 4k or a 64k page size. Like remap_pfn_range, it would
typically be called in a driver's mmap function. It only maps a
single 4k page, which on a 64k page kernel appears replicated 16 times
throughout a 64k page. On a 4k page kernel it reduces to a call to
remap_pfn_range.
The way this works on a 64k kernel is that a new bit, _PAGE_4K_PFN,
gets set on the linux PTE. This alters the way that __hash_page_4K
computes the real address to put in the HPTE. The RPN field of the
linux PTE becomes the 4k RPN directly rather than being interpreted as
a 64k RPN. Since the RPN field is 32 bits, this means that physical
addresses being mapped with remap_4k_pfn have to be below 2^44,
i.e. 0x100000000000.
The patch also factors out the code in arch/powerpc/mm/hash_utils_64.c
that deals with demoting a process to use 4k pages into one function
that gets called in the various different places where we need to do
that. There were some discrepancies between exactly what was done in
the various places, such as a call to spu_flush_all_slbs in one case
but not in others.
Signed-off-by: Paul Mackerras <paulus@samba.org>
This is more consistent and gets us closer to the Sparc code.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This is more consistent and gets us closer to the Sparc code.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This is more consistent and gets us closer to the Sparc code.
We add a device_is_compatible define for compatibility during the
change over.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This is more consistent and gets us closer to the Sparc code.
We add a get_property define for compatibility during the change over.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Efika boards have to be booted with console=ttyPSC0 unless there is a
graphics card plugged in. Detect if the firmware stdout is the serial
connector.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Our kernels put everything in the first load segment, and we read that.
Instead of decompressing to the end of the gzip stream or supplied image
and hoping we get it all, decompress the expected size and complain if
it is not available.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Commit a9903811bf missed two uses of the
the .gz suffix in the wrapper script and didn't clean the additonal
possibly cached files.
Signed-off-by: Milton Miller <miltonm@bga.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
crt0.S had provisions to provide run address relocaton to got2 and
cache flush, but not on the bss clear or stack pointer load. Apply
the same fixup for them.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The ELF parsing routines local to arch/powerpc/boot/main.c are useful
to other callers therefore move them to their own file.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
72486f1f8f inverted the sense for enabling
hotplug CPU controls without reference to any other architecture other than
i386, ia64 and PowerPC. This left everyone else without hotplug CPU control.
Fix powerpc for this brain damage.
(akpm: patch adapted from rmk's ARM fix. Changelog stolen from rmk)
Signed-off-by: Giuliano Pochini <pochini@shiny.it>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Lifted from http://bugzilla.kernel.org/show_bug.cgi?id=8182
Steps to reproduce:
- Boot an Ocotea board with the mainline 2.6.20.1 kernel.
- Create an /etc/ntp.conf file with at least one NTP server and iburst mode set.
- Issue the command "ntpd -g".
- Wait about two minutes.
- Verify ntpd's status via "ntpq -pn" and by looking in /var/log/ntp.
This fixes this problem by adjusting the expected clock frequency.
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
dt_xlate_reg() uses the ranges properties of a node's parentage to find
the absolute physical address of the node's registers.
The ns16550 driver uses this when no virtual-reg property is found.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
There is no reason to yield the CPU in spu_yield - if the backing
thread reenters spu_run it gets added to the end of the runqueue for
it's priority. So the yield is just a slowdown for the case where
we have higher priority contexts waiting.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
I wanted to enable CBE_THERM on PS3. So I had to enable CBE_RAS first.
But the resulting kernel doesn't link, as cbe_regs.c isn't compiled for
non-PPC_CELL_NATIVE.
CBE_RAS should depend on PPC_CELL_NATIVE; this makes it so.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This is now inaccurate because we may not have entered prom_init() and
r3 is overwritten immediately anyway.
Signed-off-by: Sonny Rao <sonny@burdell.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Remove unneeded inclusion of linux/ide.h
It does not compile with CONFIG_BLOCK=n.
Remove asm/ide.h from ksyms file, it gets included earlier via
linux/ide.h.
Compile tested with all defconfig files.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Fix link errors with CONFIG_EEH=n:
arch/powerpc/platforms/built-in.o: In function `.pcibios_fixup_new_pci_devices':
(.text+0x41c8): undefined reference to `.eeh_add_device_tree_late'
arch/powerpc/platforms/built-in.o: In function `.init_phb_dynamic':
(.text+0x4280): undefined reference to `.eeh_add_device_tree_early'
arch/powerpc/platforms/built-in.o: In function `.pcibios_remove_pci_devices':
(.text+0x42fc): undefined reference to `.eeh_remove_bus_device'
arch/powerpc/platforms/built-in.o: In function `.pcibios_add_pci_devices':
(.text+0x43c0): undefined reference to `.eeh_add_device_tree_early'
arch/powerpc/platforms/built-in.o: In function `.pSeries_final_fixup':
(.init.text+0xb4): undefined reference to `.pci_addr_cache_build'
make[1]: *** [.tmp_vmlinux1] Error 1
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This cleans up how the zImage code manipulates the kernel
command line. Notable improvements from the old handling:
- Command line manipulation is consolidated into a new
prep_cmdline() function, rather than being scattered across start()
and some helper functions
- Less stack space use: we use just a single global command
line buffer, which can be initialized by an external tool as before,
we no longer need another command line sized buffer on the stack.
- Easier to support platforms whose firmware passes a
commandline, but not a device tree. Platform code can now point new
loader_info fields to the firmware's command line, rather than having
to do early manipulation of the /chosen bootargs property which may
then be rewritten again by the core.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This patch adds a library of useful device tree manipulation functions
to the zImage library, for use by platform code. These functions are
based on the hooks already in dt_ops, so they're not dependent on a
particular device tree implementation. This patch also slightly
streamlines the code in main.c using these new functions.
This is a consolidation of my work in this area with Scott Wood's
patches to a very similar end.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
mtocrf is a faster single-field mtcrf (move to condition register
fields) instruction available in POWER4 and later processors. It can
make quite a difference in performance on some implementations, so use
it for CONFIG_POWER4_ONLY builds.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
There are many adapters which cannot handle DMAing across any 4 GB
boundary. For instance, the latest Emulex adapters.
This normally is not an issue as firmware gives dma-windows under
4gigs. However, some of the new System-P boxes have dma-windows above
4gigs, and this present a problem.
During initialization of the IOMMU tables, the last entry at each 4GB
boundary is marked as used. Thus no mappings can cross the boundary.
If a table ends at a 4GB boundary, the entry is not marked as used.
A boot option to remove this 4GB protection is given w/ protect4gb=off.
This exposes the potential issue for driver and hardware development
purposes.
Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Adding this handler allow userspace to properly handle the module
autoloading. The generation of the uevent itself is now common to
all bus using of_device, so not much code here.
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This common uevent handler allow the several bus types based on
of_device to generate the uevent properly and avoiding
code duplication.
This handlers take a struct device as argument and can therefore
be used as the uevent call directly if no special treatment is
needed for the bus.
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
There are several IOMMU allocator bugs. Instead of trying to fix this
overly complicated code, just mirror the PCI IOMMU arena allocator
which is very stable and well stress tested.
I tried to make the code as identical as possible so we can switch
sun4u PCI and SBUS over to a common piece of IOMMU code. All that
will be need are two callbacks, one to do a full IOMMU flush and one
to do a streaming buffer flush.
This patch gets rid of a lot of hangs and mysterious crashes on SBUS
sparc64 systems, at least for me.
Signed-off-by: David S. Miller <davem@davemloft.net>
Create platform device for cobalt buttons as part of arch setup.
This makes the driver follow current driver model more closely.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Acked-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
The bit setting was off by one.
Tested with RTC and GPIO_WKUP interrupts.
Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
WARNING: arch/x86_64/kernel/built-in.o - Section mismatch: reference to .init.text:nvidia_bugs from .data between 'early_qrk' (at offset 0x8428) and 'enable_cpu_hotplug'
WARNING: arch/x86_64/kernel/built-in.o - Section mismatch: reference to .init.text:via_bugs from .data between 'early_qrk' (at offset 0x8438) and 'enable_cpu_hotplug'
WARNING: arch/x86_64/kernel/built-in.o - Section mismatch: reference to .init.text:ati_bugs from .data between 'early_qrk' (at offset 0x8448) and 'enable_cpu_hotplug'
The compiler is putting it into .data because the __initdata is in the wrong
place.
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Since lazy MMU batching mode still allows interrupts to enter, it is
possible for interrupt handlers to try to use kmap_atomic, which fails when
lazy mode is active, since the PTE update to highmem will be delayed. The
best workaround is to issue an explicit flush in kmap_atomic_functions
case; this is the only way nested PTE updates can happen in the interrupt
handler.
Thanks to Jeremy Fitzhardinge for noting the bug and suggestions on a fix.
This patch gets reverted again when we start 2.6.22 and the bug gets fixed
differently.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
On a SGI Altix TIOCP based PCI bus we need to include the ATE_PIO attribute
bit if we're mapping a 32bit MSI address.
Signed-off-by: Mike Habeck <habeck@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
My patch: git commit=95235ca2c20ac0b31a8eb39e2d599bcc3e9c9a10 introduced a bug
in IA64 cpuinfo output.
Patch changed the proc_freq from 1HZ resolution to 1KHz resolution, but left
format string unchanged at " %lu.%06lu". Below is the fix.
Thanks to Bjorn for catching this.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6:
[PATCH] x86: Don't probe for DDC on VBE1.2
[PATCH] x86-64: Increase NMI watchdog probing timeout
[PATCH] x86-64: Let oprofile reserve MSR on all CPUs
[PATCH] x86-64: Disable local APIC timer use on AMD systems with C1E
The __copy_to_user_inatomic() calls in file_read_actor() and pipe_read()
are broken on original i386 machines, where WP-works-ok == false, as
__copy_to_user_inatomic() on such systems calls functions which might
sleep and/or contain cond_resched() calls inside of a kmap_atomic()
region.
The original check for WP-works-ok was in access_ok(), but got moved
during the 2.5 series to fix a race vs. swap.
Return the number of bytes to copy in the case where we are in an atomic
region, so the non atomic code pathes in file_read_actor() and
pipe_read() are taken.
This could be optimized to avoid the kmap_atomicby moving the check for
WP-works-ok into fault_in_pages_writeable(), but this is more intrusive
and can be done later.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix the regression resulting from the recent change of suspend code
ordering that causes systems based on Intel x86 CPUs using the microcode
driver to hang during the resume.
The problem occurs since the microcode driver uses request_firmware() in
its CPU hotplug notifier, which is called after tasks has been frozen and
hangs. It can be fixed by telling the microcode driver to use the
microcode stored in memory during the resume instead of trying to load it
from disk.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Adrian Bunk <bunk@stusta.de>
Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Maxim <maximlevitsky@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently we have a confused udelay implementation.
* __const_udelay does not accept usecs but xloops in i386 and x86_64
* our implementation requires usecs as arg
* it gets a xloops count when called by asm/arch/delay.h
Bugs related to this (extremely long shutdown times) where reported by some
x86_64 users, especially using Device Mapper.
To hit this bug, a compile-time constant time parameter must be passed -
that's why UML seems to work most times. Fix this with a simple udelay
implementation.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
VBE1.2 doesn't support function 15h (DDC) resulting in a 'hang' whilst
uncompressing kernel with some video cards. Make sure we check VBE version
before fiddling around with DDC.
http://bugzilla.kernel.org/show_bug.cgi?id=1458
Opened: 2003-10-30 09:12 Last update: 2007-02-13 22:03
Much thanks to Tobias Hain for help in testing and investigating the bug.
Tested on;
i386, Chips & Technologies 65548 VESA VBE 1.2
CONFIG_VIDEO_SELECT=Y
CONFIG_FIRMWARE_EDID=Y
Untested on x86_64.
Signed-off-by: Zwane Mwaikambo <zwane@infradead.org>
Signed-off-by: Andi Kleen <ak@suse.de>
The MSR reservation is per CPU and oprofile would only allocate them
on the CPU it was initialized on. Change this to handle all CPUs.
This also fixes a warning about unprotected use of smp_processor_id()
in preemptible kernels.
Signed-off-by: Andi Kleen <ak@suse.de>
AMD dual core laptops with C1E do not run the APIC timer correctly
when they go idle. Previously the code assumed this only happened
on C2 or deeper. But not all of these systems report support C2.
Use a AMD supplied snippet to detect C1E being enabled and then disable
local apic timer use.
This supercedes an earlier workaround using DMI detection of specific systems.
Thanks to Mark Langsdorf for the detection snippet.
Signed-off-by: Andi Kleen <ak@suse.de>
Example memory map (from HP sx1000 with VGA enabled):
0x00000 - 0x9FFFF supports only WB (cacheable) access
0xA0000 - 0xBFFFF supports only UC (uncacheable) access
0xC0000 - 0xFFFFF supports only WB (cacheable) access
Some versions of X map the entire 0x00000-0xFFFFF area at once. With the
example above, this mmap must fail because there's no memory attribute that's
safe for the entire area.
Prior to this patch, we performed the mmap with a UC mapping. When X
accessed the WB memory at 0xC0000, it caused an MCA. The crash can happen
when mapping 0xC0000 from either /dev/mem or a /sys/.../legacy_mem file.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Allow cacheable mmaps of legacy_mem if WB access is supported for the region.
The "legacy_mem" file often contains a shadow option ROM, and some versions of
X depend on this.
Tim Yamin <plasm@roo.me.uk> reported that this change fixes X on a Dell
PowerEdge 3250.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Example memory map (from HP sx1000 with VGA enabled):
0x00000 - 0x9FFFF supports only WB (cacheable) access
0xA0000 - 0xBFFFF supports only UC (uncacheable) access
0xC0000 - 0xFFFFF supports only WB (cacheable) access
pci_read_rom() indirectly uses ioremap(0xC0000) to read the shadow VGA option
ROM. ioremap() used to default to a 16MB or 64MB UC kernel identity mapping,
which would cause an MCA when reading 0xC0000 since only WB is supported there.
X uses reads the option ROM to initialize devices. A smaller test case is:
# echo 1 > /sys/bus/pci/devices/0000:aa:03.0/rom
# cp /sys/bus/pci/devices/0000:aa:03.0/rom x
To avoid this, we can use the same ioremap_page_range() strategy that most
architectures use for all ioremaps. These page table mappings come out of the
vmalloc area. On ia64, these are in region 5 (0xA... addresses) and typically
use 16KB or 64KB mappings instead of 16MB or 64MB mappings. The smaller
mappings give more flexibility to use the correct attributes.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
No functional change, just use the same names as i386.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] SMTC: Fix recursion in instant IPI replay code.
[MIPS] BCM1480: Fix setting of irq affinity.
[MIPS] do_page_fault() needs to use raw_smp_processor_id().
[MIPS] SMTC: Fix false trigger of debug code on single VPE.
[MIPS] SMTC: irq_{enter,leave} and kstats keeping for relayed timer ints.
[MIPS] lockdep: Deal with interrupt disable hazard in TRACE_IRQFLAGS
[MIPS] lockdep: Handle interrupts in R3000 style c0_status register.
[MIPS] MV64340: Add missing prototype for mv64340_irq_init().
[MIPS] MT: MIPS_MT_SMTC_INSTANT_REPLAY currently conflicts with PREEMPT.
[MIPS] EV64120: Include <asm/irq.h> to fix warning.
[MIPS] Ocelot: Fix warning.
[MIPS] Ocelot: Give PMON_v1_setup a proper prototype.
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] Fix arch/ia64/pci/pci.c:571: warning: `return' with a value
[IA64] Speed up boot - skip unnecessary clock calibration
[IA64] bugfix stack layout upside-down
[IA64] Fix possible invalid memory access in ia64_setup_msi_irq()
Signed-off-by: Xianghua Xiao <x.xiao@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This patch provides the basic MPC8544 DS platform code and config.
Follow-up patches will add peripherals such as PCI and SATA.
Signed-off-by: Xianghua Xiao <x.xiao@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
local_irq_restore -> raw_local_irq_restore -> irq_restore_epilog ->
smtc_ipi_replay -> smtc_ipi_dq -> spin_unlock_irqrestore ->
_spin_unlock_irqrestore -> local_irq_restore
The recursion does abort when there is no more IPI queued for a CPU, so
this isn't usually fatal which is why we got away with this for so long
until this was discovered by code inspection.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Make smtc_setup_irq() update the list of interrupts which need to be
watched by the debug code itself. Also there is no need to initialize the
IPI swint when running with a single VPE, so don't initialize it.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Between the mtc0 or di instruction that disables interrupts and the
following hazard barrier a processor may still take interrupts. If an
interrupt is taken after interrupts are disabled but before the state
is updated it will appear to restore_all that it is incorrectly returning
with interrupts disabled.
Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Check the IEP bit for R3000 style processors when checking to see if
interrupts will be reenabled in restore_all.
Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
So until MIPS_MT_SMTC_INSTANT_REPLAY has been rewritten to solve this
issue, don't allow selecting it with PREEMPT.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Skip clock calibration if cpu being brought online is exactly the same
speed, stepping, etc., as the previous cpu. This significantly reduces
the time to boot very large systems.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
ia64 expects following vm layout:
== low memory
[register-stack grows up]
[memory-stack grows down]
== high memory
But the code assigns the base of the register stack at the
maximum stack size offset from the fixed address where the
stack *might* start. Stack randomization will result in the
memory stack starting at a lower address than this, and if the
user has set a low stack limit with "ulimit -s", then you can
end up with the register stack above the memory stack (or if
you were very unlucky right on top of it!).
Fix: Calculate the base address for the register stack starting
from the actual address of the memory stack.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
The following 'if' statement in ia64_setup_msi_irq() always fails even
if create_irq() returns <0 value, because variable 'irq' is defined as
unsigned int. It would cause invalid memory access.
irq = create_irq();
if (irq < 0)
return irq;
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Add support for the MPC8323E Reference Development Board (RDB). The board
is a mini-ITX reference board with 64M DDR2, 16M flash, USB, PCI,
10/100 ethernet, serial, and phone ports.
Signed-off-by: Michael Barkowski <michael.barkowski@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Correct the alignment of the internal buffer used by the QUICC Engine
SDMA controller to 4Kbytes. Correct the shift direction in the logic
that sets up the SDMR register for the QUICC Engine SDMA controller.
Signed-off-by: Chuck Meade <chuckmeade@mindspring.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This adds support of suspend/resume on i386 for HPET, which fixes a
number of timer-related failures around STR.
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Acked-by: Michael S. Tsirkin <mst@dev.mellanox.co.il>
Acked-by: Jeff Chua <jeff.chua.linux@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix a few miscellaneous compilation problems -
an assignment with mismatched types in ldt.c
a missing include in mconsole.h which needs a definition of uml_pt_regs
I missed removing an include of user_util.h in hostfs
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Permit lvm to create logical volumes without crashing UML.
When device-mapper's DM_DEV_CREATE_CMD ioctl is called to create a new device,
dev_create()->dm_create()->alloc_dev()-> blk_queue_bounce_limit(md->queue,
BLK_BOUNCE_ANY) is called.
blk_queue_bounce_limit(BLK_BOUNCE_ANY) calls init_emergency_isa_pool() if
blk_max_pfn < blk_max_low_pfn. This is the case on UML, but
init_emergency_isa_pool() hits BUG_ON(!isa_page_pool) because there doesn't
seem to be a dma zone on UML for mempool_create() to allocate from.
Most architectures seem to have max_low_pfn == max_pfn, but UML doesn't
because of the uml_reserved chunk it keeps for itself. From what I can see,
max_pfn and max_low_pfn don't get much use after the bootmem-allocator stops
being used anyway, except that they initialize the block layer's
blk_max_low_pfn/blk_max_pfn.
This ensures init_emergency_isa_pool() doesn't crash uml in this situation by
setting max_low_pfn == max_pfn in mem_init().
Signed-off-by: Jason Lunz <lunz@falooley.org>
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Alasdair G Kergon <agk@redhat.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
As the comment immediately preceding this points out, this list is changed in
irq context, so it needs to be protected with spin_lock_irqsave in process
context when it is processed.
Sometimes, gcc should just compile the comments and forget the code.
The IRQ side of this was better, in the sense that it blocked and unblocked
interrupts, but it still should have saved and restored them.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix a NULL dereference when unplugging a device. The default value of
err_msg wants to be "" in case the driver doesn't modify it.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 62f96cb01e introduced per-devices
queues and locks, which was fine as far as it went, but left in place a
global which controlled access to submitting requests to the host. This
should have been made per-device as well, since it causes I/O hangs when
multiple block devices are in use.
This patch fixes that by replacing the global with an activity flag in the
device structure in order to tell whether the queue is currently being run.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix the NAND flash timings on the AT91SAM9260.
The current timings lead to the detection of a number of bad blocks.
These timings are now set the same as on the AT91SAM9263.
Patch from Nicolas Ferre.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fix a bug in dcr_unmap().
At unmap time the DCR offset need to be added instead of substracted.
Signed-off-by: Jean-Christophe Dubois <jdubois@mc.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
So I think the right solution is to simply make pci_enable_device just
flip enable bits and move the rest of the work someplace else.
However a thorough cleanup is a little extreme for this point in the
release cycle, so I think a quick hack that makes the code not stomp the
irq when msi irq's are enabled should be the first fix. Then we can
later make the code not change the irqs at all.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
__sdivsi3_i4i, __udiv_qrnnd_16, and __udivsi3_i4i don't exist
outside of the ST compiler, so kill them off.
This causes compile failures with other GCC4 compilers.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This reverts commit 94985134b7 and
insteads removes the WARN_ON() that caused that commit in the first
place.
The problem is that we call disable_nonboot_cpus() in swsusp before
powering down the system in order to avoid triggering the WARN_ON()
in arch/x86_64/kernel/acpi/sleep.c:init_low_mapping() and this doesn't
work well on Thomas' system.
So instead, remove the WARN_ON() in arch/x86_64/kernel/acpi/sleep.c:
init_low_mapping(), which triggers every time during the suspend to disk
in the platform mode, as the potential problem it is related to doesn't
seem to occur in practice.
[ I think we might want to disallow the case of multiple users of that
mm, or something. Normally, playing with the current process page
tables on the current CPU should be fine as long as we don't have
other threads using those tables at the same time..
Anyway, not pretty, but better than the warning or the lockup - Linus ]
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The clockevents / tick management code expects an error value, when the
event is already expired. hpet_next_event() returns 1 in that case.
Fix it to return the proper -ETIME error code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This patch uses MAX_REG_NR consistently to refer to the register file size.
FRAME_SIZE isn't sufficient because on x86_64, it is smaller than the
ptrace register file size. MAX_REG_NR was introduced as a consistent way
to get the number of registers, but wasn't used everywhere it should be.
When this causes a problem, it makes PTRACE_SETREGS fail on x86_64 because
of a corrupted segment register value in the known-good register file. The
patch also adds a register dump at that point in case there are any future
problems here.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
commit b19cbe2a16 [BRIDGE]: Fix fdb RCU
race
breaks sparc SMP build because atomic_add_unless is not exported.
This patch exports atomic_add_unless and atomic_cmpxchg.
Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
mpc832x_mds.h was exporting a function that didn't exist anymore. Once removed
the header had no purpose.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
In two places, ucc_slow_init() passes a physical address instead of the
virtual address to functions that were expecting the latter, causing a kernel
panic. us_info->regs contains the physical address of the UCC register set.
The registers are ioremap'd to kernel space, and the virtual pointers are
stored in us_regs. The code was using us_info->regs when it should have been
using us_regs.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Delete apparently unused header file
arch/powerpc/platforms/83xx/mpc834x_itx.h.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Change the Kconfig files so that the Freescale QE options are automatically
selected if a QE device is selected. Previously, you'd need to manually
select UCC_FAST if you want any "fast" UCC devices, such as Gigabit Ethernet.
Now, the QE Gigabit Ethernet option is always available if the device has a
QE, and UCC_FAST is automatically enabled. A side-effect is that the
"QE Options" menu no longer exists.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This move sets the stage for the use of generic PCI Express
code in 85xx and 86xx parts from FSL. Subsequent patches
for 8548 and 8544 will be able to use this shared code.
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
[S390] zcrypt: Fix ap_poll_requests counter in lost requests error path.
[S390] zcrypt: Fix possible dead lock in AP bus module.
[S390] cio: Device status validity.
[S390] kprobes: Align probe address.
[S390] Fix TCP/UDP pseudo header checksum computation.
[S390] dasd: Work around gcc bug.
This patch automatically enables pci=bfsort for the Dell PowerEdge
R900. This is necessary to ensure the onboard NICs enumerate in the
proper order, similar to the other systems already on the list.
Signed-off-by: Matt Domsch <Matt_Domsch@dell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Running a probe on s390 with a probe address that is not 4 byte aligned
results in a Kernel BUG. The problem is that the stura instruction used
by swap_instruction requires the destination address to be 4 byte aligned.
As stura only writes 4 bytes, aligning to the next 4 byte aligned address
results in the breakpoint instruction being stored past the probe address.
The fix is to align the address backward (to the previous 4 byte aligned
address) and writing the two byte breakpoint instruction in the appropriate
bytes.
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: David Wilder <dwilder@us.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This patch adds a reg.h to the zImage code, with common definitions
for accessing system registers. For now, this includes functions for
retrieving the PVR and the stack pointer. This patch then uses the
new reg.h to let start() display the running stack address without
having to explicitly pass the stack as a parameter from the asm code.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This patch adds the correct attributes to the zImage's versions of
printf to make gcc generate format string mismatch warnings. It also
corrects several minor problems with format strings in the zImage thus
discovered.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Before the plethora of platforms gets any worse, establish a common
rule to invoke the wrapper for any platform. Add arguments to
the rule for initrd, dts, dtb, etc. Show example usage with initrd.
Create default rules for zImage, and zImage.initrd. initrd targets
depend on the ramdisk file.
Don't consider targets for zImage.initrd that are targets for zImage.
This means uImage is no longer considered a target for zImage.initrd.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Now that obj-boot is in targets, we can remove (twice) it from clean-files.
zImage.initrd was missing, move zImage nearer where its used, and place
zImage.initrd next to it. Remove non-ported zImage.sandpoint, and add
auto-generation of unconfigured zImage.initrd* like image-.
Signed-off-by: Milton Miller <miltonm@bga.com>
--
Testing: did a few builds and cleans
Signed-off-by: Paul Mackerras <paulus@samba.org>
Kbuild if_changed and if_changed_dep require the use of the dummy
FORCE to get the dependencies right. Also add to targets to get
correct behavior.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Some platforms might need to run some code before the zImage start, but
could otherwise use the bss clear and relocation code. Export the
start address strongly as zImage_start_lib.
Signed-off-by: Milton Miller <miltonm@bga.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Add a macro fatal that calls printf then exit. User must include stdio.h.
Typically replaces 3 lines with 1, although I added back some whitespace.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This removes the time suspend/restore code that was done through
a PMU notifier in arch/platforms/powermac/time.c.
Instead, introduce arch/powerpc/sysdev/timer.c which creates a sys
device and handles time of day suspend/resume through that.
This should probably be replaced by using the generic RTC framework
but for now it gets rid of the arcane powermac specific hack.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Change the configuration of the PCIX PCI->PLB inbound memory window
to be 2GB instead of 512kB. The comment already mentioned 2GB, but the
code unfortunately didn't reflect this.
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Use lowercase for hex printouts in oops messages. The number of times I have
tried to copy and paste from an oops into an objdump search...
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Looks like someone got this backwards, highlighting the perils of the
? : !!! :)
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Handle recursive oopses, like on x86. We had a few cases recently where
we locked up in oops printing and didnt make it into crashdump.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Move pmac_backlight_unblank into its own function and only take the
pmac_backlight_mutex when we are on a pmac for that added bit of
paranoia.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
commit f9690982b8 removed the check for
cpu_khz from sched_clock(), which prevented early access to the TSC by
non obvious magic.
This is harmless as long as the CPU has a TSC. On TSCless systems this
results in an illegal instruction trap.
Replace tsc_disabled and tsc_unstable by tsc_enabled, which is only set
when the tsc is available and not unstable.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
CC arch/mips/mm/cerr-sb1.o
arch/mips/mm/cerr-sb1.c: In function 'sb1_cache_error':
arch/mips/mm/cerr-sb1.c:235: warning: format '%010llx' expects type 'long long unsigned int', but argument 2 has type 'uint64_t'
arch/mips/mm/cerr-sb1.c: In function 'extract_ic':
arch/mips/mm/cerr-sb1.c:385: warning: format '%016llx' expects type 'long long unsigned int', but argument 3 has type 'uint64_t'
arch/mips/mm/cerr-sb1.c:385: warning: format '%016llX' expects type 'long long unsigned int', but argument 6 has type 'uint64_t'
arch/mips/mm/cerr-sb1.c: In function 'extract_dc':
arch/mips/mm/cerr-sb1.c:523: warning: format '%010llx' expects type 'long long unsigned int', but argument 3 has type 'uint64_t'
arch/mips/mm/cerr-sb1.c:523: warning: format '%016llX' expects type 'long long unsigned int', but argument 7 has type 'uint64_t'
arch/mips/mm/cerr-sb1.c:570: warning: format '%016llX' expects type 'long long unsigned int', but argument 3 has type 'uint64_t'
LD arch/mips/mm/built-in.o
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This patch fixes two places where we used plain 'x - PAGE_OFFSET' to
achieve virtual to physical address convertions. This type of convertion
is no more allowed since commit 6f284a2ce7.
Reported-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
[Build fixes for machines that don't use the generic dma-coherence.h]
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Ray Lee reported, that on an UP kernel with "noapic" command line option
set, the box locks hard during boot.
Adding some debug printks revealed, that the last action on the box
before stalling was "Send IPI" - a debug printk which was put into
smp_send_timer_broadcast_ipi().
It seems that send_IPI_mask(mask, LOCAL_TIMER_VECTOR) fails when
"noapic" is set on the command line on an UP kernel.
Aside of that it does not make much sense to trigger an interrupt
instead of calling the function directly on the CPU which gets the
PIT/HPET interrupt in case of broadcasting.
Reported-by: Ray Lee <ray-lk@madrabbit.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ray Lee <ray-lk@madrabbit.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Needed for any architecture that claims ARCH_APICTIMER_STOPS_ON_C3,
not just i386.
I'm hoping Thomas will clean this up a bit later..
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It turned out that it is almost impossible to trust ACPI, BIOS & Co.
regarding the C states. This was the reason to switch the local apic
timer off in C2 state already. OTOH there are sane and well behaving
systems, which get punished by that decision.
Allow the user to confirm that the local apic timer is trustworthy in C2
state. This keeps the default behaviour on the safe side.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
ACPI: IA64: fix %ll build warnings
ACPI: IA64: fix allnoconfig build
ACPI: Only use IPI on known broken machines (AMD, Dothan/BaniasPentium M)
ACPI: ibm-acpi: allow module to load when acpi notifiers can't be set (v2)
ACPI: parse 2nd MADT by default
ACPICA: revert "acpi_serialize" changes
sony-laptop: MAINTAINERS fix entry, add L: and W:
ACPI: resolve HP nx6125 S3 immediate wakeup regression
ACPI: Add support to parse 2nd MADT
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] Bypass hcall stats until cpu features have run
[POWERPC] Avoid hypervisor statistics calculation in real mode
[POWERPC] Fix atomicity of TIF update in flush_thread()
latest -git triggers an irqtrace/lockdep warning of a leaked
irqs-off condition:
BUG: at kernel/fork.c:1033 copy_process()
after some debugging it turns out that commit ca1b940c accidentally left
interrupts disabled - which trickled down all the way to the first time
we fork a kernel thread and triggered the warning.
the fix is to re-enable interrupts in the 'else' branch of
setup_boot_APIC_clock()'s pmtimers calibration path.
Reported-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Thomas Gleixner <tglx@brown.paperbag.linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The local APIC timer stops to work in deeper C-States. This is handled by
the ACPI code and a broadcast mechanism in the clockevents / tick managment
code.
Some systems do not expose the deeper C-States to the kernel, but switch
into deeper C-States behind the kernels back. This delays the local apic
timer interrupts for ever and makes the systems unusable.
Add a command line option to disable the local apic timer and a dmi
quirk for known broken systems.
Andi sayeth:
While not wrong by itself i think it is still better to use some heuristic
-- like "has battery in ACPI" With the DMI table if the problem is more wide
spread we will just continue extending it.
But anyways should be ok now for .21 although I'm not really happy with
it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
Grudgingly-acked-by: Andi Kleen <ak@suse.de>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
