12 Jul, 2011
3 commits
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For AMP, different kernel instances load into separate memory regions.
Read the start of memory from the device tree and limit the memory to what's
specified in the device tree.Signed-off-by: Dave Kleikamp
Signed-off-by: Tony Breeds
Cc: Benjamin Herrenschmidt
Cc: Josh Boyer
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Josh Boyer -
Since other OS's may be running on the other cores don't use tlbivax
Signed-off-by: Dave Kleikamp
Signed-off-by: Tony Breeds
Cc: Benjamin Herrenschmidt
Cc: Josh Boyer
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Josh Boyer -
All current pcie controllers unconditionally use SDR to check the link and
poll for reset. Refactor the code to include device reset in the
port_init_hw() op and add a new check_link() op.This will make room fro new controllers that do not use SDR for these
operations.Tested on 460ex.
Signed-off-by: Tony Breeds
Signed-off-by: Josh Boyer
01 Jul, 2011
4 commits
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gcc 4.7 will be more strict about parsing the -mtraceback option:
gcc: error: unrecognized argument in option '-mtraceback=none'
gcc: note: valid arguments to '-mtraceback=' are: full no partgcc used to do a 2 char compare so both "no" and "none" would
match. Switch to using -mtraceback=no should work everywhere.Signed-off-by: Anton Blanchard
Signed-off-by: Benjamin Herrenschmidt -
This patch adds support for the new "jump label" feature.
Unlike x86 and sparc we just merrily patch the code with no locks etc,
as far as I know this is safe, but I'm not really sure what the x86/sparc
code is protecting against so maybe it's not.I also don't see any reason for us to implement the poke_early() routine,
even though sparc does.[BenH: Updated the patch to upstream generic changes]
Signed-off-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
A mix of think & mismerge on my side caused a problem where both the
new hvsi_lib and the old hvsi driver gets compiled and try to define
symbols with the same name.This fixes it by renaming the hvsi_lib exported symbols.
Signed-off-by: Benjamin Herrenschmidt
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a9c0f41b3a64955fd6f4e9d66ae1df1cbdee0cd0 breaks the build
on some platforms. The extern declaration must be shielded
against assembly.Signed-off-by: Benjamin Herrenschmidt
30 Jun, 2011
11 commits
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This patch adds a printk companion to replace the udbg progress function
when initmem is freed.Suggested-by: Milton Miller
Suggested-by: Benjamin Herrenschmidt
Signed-off-by: Dave Carroll
Signed-off-by: Benjamin Herrenschmidt -
The free_initmem function is basically duplicated in mm/init_32,
and init_64, and is moved to the common 32/64-bit mm/mem.c.All other sections except init were removed in v2.6.15 by
6c45ab992e4299c869fb26427944a8f8ea177024 (powerpc: Remove section
free() and linker script bits), and therefore the bulk of the executed
code is identical.This patch also removes updating ppc_md.progress to NULL in the powermac
late_initcall.Suggested-by: Milton Miller
Suggested-by: Benjamin Herrenschmidt
Signed-off-by: Dave Carroll
Signed-off-by: Benjamin Herrenschmidt -
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm/radeon/kms: increase rom size for atrm method -
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: caam - fix operator precedence in shared descriptor allocation -
The vbios rom is >64k on a lot of modern asics. Increase
the fetch size for atrm to make sure we don't miss part
of a larger rom.Signed-off-by: Alex Deucher
Signed-off-by: Dave Airlie -
setkey allocates 16 bytes (CAAM_CMD_SZ *
DESC_AEAD_SHARED_TEXT_LEN) shy of what is needed to
store the shared descriptor, resulting in memory
corruption. Fix this.Signed-off-by: Kim Phillips
Signed-off-by: Herbert Xu -
* 'kvm-updates/3.0' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86 emulator: fix %rip-relative addressing with immediate source operand -
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
i2c/pca954x: Initialize the mux to disconnected state
i2c-taos-evm: Fix log messages -
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
arch/powerpc: use printk_ratelimited instead of printk_ratelimit
powerpc/rtas-rtc: remove sideeffects of printk_ratelimit
powerpc/pseries: remove duplicate SCSI_BNX2_ISCSI in pseries_defconfig
powerpc/e500: fix breakage with fsl_rio_mcheck_exception
powerpc/p1022ds: fix audio-related properties in the device tree
powerpc/85xx: fix NAND_CMD_READID read bytes number -
It's not so much an error as a warning about normal Marvell crazines.
So don't use KERN_ERR that ends up spamming the console even in quiet
mode, it's not _that_ critical.Explained by Jeff:
"Long explanation, it's a mess:
Marvell took standard AHCI, and bastardized it to include a weird mode
whereby PATA devices appear inside the AHCI DMA and interrupt
infrastructure you're familiar with.So, PATA devices appear via pata_marvell driver, using basic legacy
IDE programming interface. But SATA devices, which might also be
attached to this chip, either work in under-performing mode or
simply don't work at all (e.g. newer 6 Gbps devices or port
multiplier attachments, NCQ, ...)On the other hand, 'ahci' driver loads and works with the chip's
attached SATA devices quite beautifully, but is completely unable to
drive any attached PATA devices, due to the Marvell-specific
PATA-under-AHCI interface.The "masking port_map 0x7 -> 0x3" message is the ahci driver "hiding"
the PATA port(s) from itself, making sure it will only drive the SATA
ports it knows how to drive."Acked-by: Jeff Garzik
Signed-off-by: Linus Torvalds
29 Jun, 2011
22 commits
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pca954x power-on default is channel 0 connected. If multiple pca954x
muxes are connected to the same physical I2C bus, the parent bus will
see channel 0 devices behind both muxes by default. This is bad.Scenario:
-- pca954x @ 0x70 -- ch 0 (I2C-bus-101) -- EEPROM @ 0x50
|
I2C-bus-1 ---
|
-- pca954x @ 0x71 -- ch 0 (I2C-bus-111) -- EEPROM @ 0x501. Load I2C bus driver: creates I2C-bus-1
2. Load pca954x driver: creates virtual I2C-bus-101 and I2C-bus-111
3. Load eeprom driver
4. Try to read EEPROM @ 0x50 on I2C-bus-101. The transaction will also bleed
onto I2C-bus-111 because pca954x @ 0x71 channel 0 is connected by default.Fix: Initialize pca954x to disconnected state in pca954x_probe()
Signed-off-by: Petri Gynther
Signed-off-by: Jean Delvare
Cc: stable@kernel.org -
* Print all error and information messages even when debugging is
disabled.
* Don't use adapter device to log messages before it is ready.Signed-off-by: Jean Delvare
Cc: stable@kernel.org -
This will allow a different backend to share it
Signed-off-by: Benjamin Herrenschmidt
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On pseries machines, consoles are provided by the hypervisor using
a low level get_chars/put_chars type interface. However, this is
really just a transport to the service processor which implements
them either as "raw" console (networked consoles, HMC, ...) or as
"hvsi" serial ports.The later is a simple packet protocol on top of the raw character
interface that is supposed to convey additional "serial port" style
semantics. In practice however, all it does is provide a way to
read the CD line and set/clear our DTR line, that's it.We currently implement the "raw" protocol as an hvc console backend
(/dev/hvcN) and the "hvsi" protocol using a separate tty driver
(/dev/hvsi0).However this is quite impractical. The arbitrary difference between
the two type of devices has been a major source of user (and distro)
confusion. Additionally, there's an additional mini -hvsi implementation
in the pseries platform code for our low level debug console and early
boot kernel messages, which means code duplication, though that low
level variant is impractical as it's incapable of doing the initial
protocol negociation to establish the link to the FSP.This essentially replaces the dedicated hvsi driver and the platform
udbg code completely by extending the existing hvc_vio backend used
in "raw" mode so that:- It now supports HVSI as well
- We add support for hvc backend providing tiocm{get,set}
- It also provides a udbg interface for early debug and boot consoleThis is overall less code, though this will only be obvious once we
remove the old "hvsi" driver, which is still available for now. When
the old driver is enabled, the new code still kicks in for the low
level udbg console, replacing the old mini implementation in the platform
code, it just doesn't provide the higher level "hvc" interface.In addition to producing generally simler code, this has several benefits
over our current situation:- The user/distro only has to deal with /dev/hvcN for the hypervisor
console, avoiding all sort of confusion that has plagued us in the past- The tty, kernel and low level debug console all use the same code
base which supports the full protocol establishment process, thus the
console is now available much earlier than it used to be with the
old HVSI driver. The kernel console works much earlier and udbg is
available much earlier too. Hackers can enable a hard coded very-early
debug console as well that works with HVSI (previously that was only
supported for the "raw" mode).I've tried to keep the same semantics as hvsi relative to how I react
to things like CD changes, with some subtle differences though:- I clear DTR on close if HUPCL is set
- Current hvsi triggers a hangup if it detects a up->down transition
on CD (you can still open a console with CD down). My new implementation
triggers a hangup if the link to the FSP is severed, and severs it upon
detecting a up->down transition on CD.Signed-off-by: Benjamin Herrenschmidt
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When CONFIG_PPC_EARLY_DEBUG is set, call register_early_udbg_console()
early from generic code.Signed-off-by: Benjamin Herrenschmidt
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Embed the struct hvsi_header in the various packet definitions
rather than open coding it multiple times. Will help provide
stronger type checking.Signed-off-by: Benjamin Herrenschmidt
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This moves various HVSI protocol definitions from the hvsi.c
driver to a header file that can be used later on by a udbg
implementationSigned-off-by: Benjamin Herrenschmidt
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Currently Maple setup code creates cpc925_edac device only on
Motorola ATCA-6101 blade. Make setup code check bridge revision
and enable EDAC on all U3H bridges.Verified on Momentum MapleD (ppc970fx kit) board.
Signed-off-by: Dmitry Eremin-Solenikov
Signed-off-by: Benjamin Herrenschmidt -
Reconfiguration notifier call for device node may fail by several reasons,
but it always assumes kmalloc failures.This enables reconfiguration notifier call chain to get the actual error
code rather than -ENOMEM by converting all reconfiguration notifier calls
to return encapsulate error code with notifier_from_errno().Signed-off-by: Akinobu Mita
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Benjamin Herrenschmidt -
This introduces pSeries_reconfig_notify() as a just wrapper of
blocking_notifier_call_chain() for pSeries_reconfig_chain.This is a preparation to improvement of error code on reconfiguration
notifier failure.Signed-off-by: Akinobu Mita
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Benjamin Herrenschmidt -
Enable functions used to access SCOM if PPC_MAPLE is defined: they are
used by cpufreq driver to control hardware.Signed-off-by: Dmitry Eremin-Solenikov
Signed-off-by: Benjamin Herrenschmidt -
This has been broken for a while but hasn't been an issue until
now because nobody was reserving regions at high addresses.Signed-off-by: Becky Bruce
Signed-off-by: Benjamin Herrenschmidt -
Signed-off-by: Becky Bruce
Signed-off-by: Benjamin Herrenschmidt -
On MMUs such as FSL where we can guarantee the entire linear mapping is
bolted, we don't need to worry about linear TLB misses. If on top of
that we do a full table walk, we get rid of all recursive TLB faults, and
can dispense with some state saving. This gains a few percent on
TLB-miss-heavy workloads, and around 50% on a benchmark that had a high
rate of virtual page table faults under the normal handler.While touching the EX_TLB layout, remove EX_TLB_MMUCR0, EX_TLB_SRR0, and
EX_TLB_SRR1 as they're not used.[BenH: Fixed build with 64K pages (wsp config)]
Signed-off-by: Scott Wood
Signed-off-by: Benjamin Herrenschmidt -
%rip-relative addressing is relative to the first byte of the next instruction,
so we need to add %rip only after we've fetched any immediate bytes.Based on original patch by Li Xin .
Signed-off-by: Avi Kivity
Acked-by: Li Xin
Signed-off-by: Marcelo Tosatti -
Signed-off-by: Scott Wood
Signed-off-by: Benjamin Herrenschmidt -
Since printk_ratelimit() shouldn't be used anymore (see comment in
include/linux/printk.h), replace it with printk_ratelimited.Signed-off-by: Christian Dietrich
Signed-off-by: Benjamin Herrenschmidt -
Don't use printk_ratelimit() as an additional condition for returning
on an error. Because when the ratelimit is reached, printk_ratelimit
will return 0 and e.g. in rtas_get_boot_time won't check for an error
condition.Signed-off-by: Christian Dietrich
Signed-off-by: Benjamin Herrenschmidt -
Remove duplicate assignment of SCSI_BNX2_ISCSI in pseries_defconfig
introduced by:
37e0c21e powerpc/pseries: Enable iSCSI support for a number of cardscauses warning:
arch/powerpc/configs/pseries_defconfig:151:warning: override: reassigning to symbol SCSI_BNX2_ISCSISigned-off-by: Michael Neuling
Signed-off-by: Benjamin Herrenschmidt -
* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6:
drm/i915: Use chipset-specific irq installers
drm/i915: forcewake fix after reset
drm/i915: add Ivy Bridge page flip support
drm/i915: split page flip queueing into per-chipset functions -
…t/gregkh/driver-core-2.6
* 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
Connector: Correctly set the error code in case of success when dispatching receive callbacks
Connector: Set the CN_NETLINK_USERS correctly
pti: PTI semantics fix in pti_tty_cleanup.
pti: ENXIO error case memory leak PTI fix.
pti: double-free security PTI fix
drivers:misc: ti-st: fix skipping of change remote baud
drivers/base/platform.c: don't mark platform_device_register_resndata() as __init_or_module
st_kim: Handle case of no device found for ID 0
firmware: fix GOOGLE_SMI kconfig dependency warning
