profile/ivi/kernel-x86-ivi.git
13 years agodrivers/virt: add missing linux/interrupt.h to fsl_hypervisor.c
Timur Tabi [Tue, 19 Jul 2011 20:45:51 +0000 (15:45 -0500)]
drivers/virt: add missing linux/interrupt.h to fsl_hypervisor.c

fsl_hypervisor.c calls request_irq() but does not include linux/interrupt.h.
Normally, the driver will compile without error, but it can fail on some
configurations.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
13 years agopowerpc/85xx: fix mpic configuration in CAMP mode
Fabio Baltieri [Tue, 12 Jul 2011 07:49:43 +0000 (09:49 +0200)]
powerpc/85xx: fix mpic configuration in CAMP mode

Change the string to check for CAMP mode boot on MPC85xx (eg. P2020) to match
the one in the corresponding dts files (p2020rdb_camp_core{0,1}.dts).

Without this fix the mpic is configured as in the SMP boot mode, which causes
the first core to report a protected source interrupt error for devices
of the other core and lock up.

Also add MPIC_SINGLE_DEST_CPU on both P2020 based architectures in CAMP
mode as suggested by Scott Wood. Thanks.

Cc: Scott Wood <scottwood@freescale.com>
Cc: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@gmail.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
13 years agopowerpc: Copy back TIF flags on return from softirq stack
Benjamin Herrenschmidt [Mon, 18 Jul 2011 17:17:22 +0000 (17:17 +0000)]
powerpc: Copy back TIF flags on return from softirq stack

We already did it for hard IRQs but it looks like we forgot
to do it for softirqs. Without this, we would lose flags
such as TIF_NEED_RESCHED set using current_thread_info()
by something running of a softirq.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/64: Make server perfmon only built on ppc64 server devices
Kumar Gala [Wed, 13 Jul 2011 05:00:41 +0000 (05:00 +0000)]
powerpc/64: Make server perfmon only built on ppc64 server devices

The 64-bit Book-E parts (to date) dont utilize the 'server' class
perfmon.  So building or depending on it makes no sense (and does break
FSL Book-E 64-bit support).  Move the selection of PPC_HAVE_PMU_SUPPORT
to be based on PPC_BOOK3S_64.

Based on a patch from Scott Wood.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agoMerge remote-tracking branch 'jwb/next' into next
Benjamin Herrenschmidt [Fri, 22 Jul 2011 03:16:41 +0000 (13:16 +1000)]
Merge remote-tracking branch 'jwb/next' into next

13 years agopowerpc/pseries: Fix hvc_vio.c build due to recent changes
Benjamin Herrenschmidt [Wed, 20 Jul 2011 08:01:48 +0000 (18:01 +1000)]
powerpc/pseries: Fix hvc_vio.c build due to recent changes

For some reason I didn't notice the failure in my test builds,
probably lacking caffeine or something...

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: Exporting boot_cpuid_phys
Andrew Gabbasov [Sat, 16 Jul 2011 03:22:13 +0000 (03:22 +0000)]
powerpc: Exporting boot_cpuid_phys

Kernel loadable module can use hard_smp_processor_id() if building with SMP
kernel. In order to make it work for UP kernels too, boot_cpuid_phys
symbol (which is what hard_smp_processor_id() macro resolves to
in non-SMP configuration) must be exported.

Signed-off-by: Andrew Gabbasov <andrew_gabbasov@mentor.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: Add CFAR to oops output
Michael Neuling [Thu, 14 Jul 2011 19:25:12 +0000 (19:25 +0000)]
powerpc: Add CFAR to oops output

Now we have the CFAR saved add it to the oops output.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agohvc_console: Add kdb support
Anton Blanchard [Tue, 12 Jul 2011 19:44:05 +0000 (19:44 +0000)]
hvc_console: Add kdb support

Add poll_get_char and poll_put_char for kdb. Enable kdb at boot with:

kgdboc=hvc0

or at runtime with:

echo hvc0 > /sys/module/kgdboc/parameters/kgdboc

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/pseries: Fix hvterm_raw_get_chars to accept < 16 chars, fixing xmon
Anton Blanchard [Tue, 12 Jul 2011 19:19:57 +0000 (19:19 +0000)]
powerpc/pseries: Fix hvterm_raw_get_chars to accept < 16 chars, fixing xmon

commit 4d2bb3f50036 (powerpc/pseries: Re-implement HVSI as part of
hvc_vio) changed udbg_getc to be based on hvterm_raw_get_chars.
Unfortunately hvterm_raw_get_chars returns -EAGAIN if you ask
for anything less than 16 characters. As a result xmon no longer
accepts input and prints a stream of junk to the screen.

The recent change highlights a problem that xmon on pseries VIO
has had all along, that it can drop input characters. The issue
is the hypervisor call does not take a count argument and can
return up to 16 characters.

This patch adds a per vterm buffer that we copy input data into
and give it out as requested.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/irq: Quieten irq mapping printks
Anton Blanchard [Thu, 7 Jul 2011 20:35:38 +0000 (20:35 +0000)]
powerpc/irq: Quieten irq mapping printks

HFI creates interrupts each time a window is setup. This results in
a lot of messages in the kernel log buffer:

    irq: irq 199007 on host null mapped to virtual irq 351

This box has over 3500 of them, causing more important kernel
messages to be overwritten. We can get at this information via
debugfs now so we may as well turn it into a pr_debug.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: Enable lockup and hung task detectors in pseries and ppc64 defeconfigs
Anton Blanchard [Wed, 6 Jul 2011 13:13:17 +0000 (13:13 +0000)]
powerpc: Enable lockup and hung task detectors in pseries and ppc64 defeconfigs

As a result of changes to Kconfig files, we no longer enable
the lockup and hung task detectors. Both are very light weight
and provide useful information in the event of a hang, so
reenable them.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: Add mpt2sas driver to pseries and ppc64 defconfig
Anton Blanchard [Wed, 6 Jul 2011 13:13:16 +0000 (13:13 +0000)]
powerpc: Add mpt2sas driver to pseries and ppc64 defconfig

Add mpt2sas driver to pseries and ppc64 defconfig.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: Disable IRQs off tracer in ppc64 defconfig
Anton Blanchard [Wed, 6 Jul 2011 13:13:15 +0000 (13:13 +0000)]
powerpc: Disable IRQs off tracer in ppc64 defconfig

The IRQs off tracer enables mcount which has a big impact on
performance. Disable it.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: Sync pseries and ppc64 defconfigs
Anton Blanchard [Wed, 6 Jul 2011 13:13:14 +0000 (13:13 +0000)]
powerpc: Sync pseries and ppc64 defconfigs

The pseries defconfig had a number of drivers enabled and we may
as well add them to the ppc64 defconfig.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/pseries/hvconsole: Fix dropped console output
Anton Blanchard [Tue, 5 Jul 2011 21:51:36 +0000 (21:51 +0000)]
powerpc/pseries/hvconsole: Fix dropped console output

Return -EAGAIN when we get H_BUSY back from the hypervisor. This
makes the hvc console driver retry, avoiding dropped printks.

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agohvc_console: Improve tty/console put_chars handling
Hendrik Brueckner [Tue, 5 Jul 2011 21:50:18 +0000 (21:50 +0000)]
hvc_console: Improve tty/console put_chars handling

Currently, the hvc_console_print() function drops console output if the
hvc backend's put_chars() returns 0.  This patch changes this behavior
to allow a retry through returning -EAGAIN.

This change also affects the hvc_push() function.  Both functions are
changed to handle -EAGAIN and to retry the put_chars() operation.

If a hvc backend returns -EAGAIN, the retry handling differs:

  - hvc_console_print() spins to write the complete console output.
  - hvc_push() behaves the same way as for returning 0.

Now hvc backends can indirectly control the way how console output is
handled through the hvc console layer.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Acked-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/kdump: Fix timeout in crash_kexec_wait_realmode
Michael Neuling [Mon, 4 Jul 2011 20:40:10 +0000 (20:40 +0000)]
powerpc/kdump: Fix timeout in crash_kexec_wait_realmode

The existing code it pretty ugly.  How about we clean it up even more
like this?

From: Anton Blanchard <anton@samba.org>

We check for timeout expiry in the outer loop, but we also need to
check it in the inner loop or we can lock up forever waiting for a
CPU to hit real mode.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Cc: <stable@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/mm: Fix output of total_ram.
Tony Breeds [Mon, 4 Jul 2011 18:44:19 +0000 (18:44 +0000)]
powerpc/mm: Fix output of total_ram.

On 32bit platforms that support >= 4GB memory total_ram was truncated.
This creates a confusing printk:
Top of RAM: 0x100000000, Total RAM: 0x0
Fix that:
Top of RAM: 0x100000000, Total RAM: 0x100000000

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/cpufreq: Add cpufreq driver for Momentum Maple boards
Dmitry Eremin-Solenikov [Wed, 29 Jun 2011 05:07:56 +0000 (05:07 +0000)]
powerpc/cpufreq: Add cpufreq driver for Momentum Maple boards

Add simple cpufreq driver for Maple-based boards (ppc970fx evaluation
kit and others). Driver is based on a cpufreq driver for 64-bit powermac
boxes with all pmac-dependant features removed and simple cleanup
applied.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: Correct annotations of pmu registration functions
Dmitry Eremin-Solenikov [Wed, 29 Jun 2011 04:54:00 +0000 (04:54 +0000)]
powerpc: Correct annotations of pmu registration functions

This fixes the following warning:
WARNING: arch/powerpc/kernel/built-in.o(.text+0x29768): Section mismatch in reference from the function .register_power_pmu() to the function .cpuinit.text:.power_pmu_notifier()
The function .register_power_pmu() references
the function __cpuinit .power_pmu_notifier().
This is often because .register_power_pmu lacks a __cpuinit
annotation or the annotation of .power_pmu_notifier is wrong.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: Remove redundant set_fs(USER_DS)
Mathias Krause [Fri, 10 Jun 2011 03:10:22 +0000 (03:10 +0000)]
powerpc: Remove redundant set_fs(USER_DS)

The address limit is already set in flush_old_exec() so this
set_fs(USER_DS) is redundant.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/4xx: Move PCIE printk to proper function
Josh Boyer [Tue, 12 Jul 2011 20:37:50 +0000 (16:37 -0400)]
powerpc/4xx: Move PCIE printk to proper function

Move the "Checking link..." printk to the function that actually checks the
linke.

Reported-by: Ayman El-Khashab <ayman@elkhashab.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
13 years agopowerpc/47x: allow kernel to be loaded in higher physical memory
Dave Kleikamp [Mon, 4 Jul 2011 18:36:57 +0000 (18:36 +0000)]
powerpc/47x: allow kernel to be loaded in higher physical memory

The 44x code (which is shared by 47x) assumes the available physical memory
begins at 0x00000000.  This is not necessarily the case in an AMP
environment.

Support CONFIG_RELOCATABLE for 476 in order to allow the kernel to be
loaded into a higher memory range.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
13 years agoMAINTAINERS: Update PowerPC 4xx entry
Josh Boyer [Tue, 12 Jul 2011 14:03:40 +0000 (10:03 -0400)]
MAINTAINERS: Update PowerPC 4xx entry

Update my email address

Signed-off-by: Josh Boyer <jwboyer@gmail.com>
13 years agopowerpc/44x: Use correct phy-address dt nodes on taishan.dts
Stefan Roese [Tue, 12 Jul 2011 01:25:54 +0000 (01:25 +0000)]
powerpc/44x: Use correct phy-address dt nodes on taishan.dts

Taishan (440GX) has the first PHY (EMAC2) mapped at PHY address 1
and the 2nd PHY (EMAC3) at PHY address 3. Use "phy-address" to
correctly describe this instead of "phy-map".

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
13 years agopowerpc/44x: boot wrapper: allow kernel to load into non-zero address
Dave Kleikamp [Mon, 4 Jul 2011 18:38:17 +0000 (18:38 +0000)]
powerpc/44x: boot wrapper: allow kernel to load into non-zero address

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 <shaggy@linux.vnet.ibm.com>
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
13 years agopowerpc/44x: don't use tlbivax on AMP systems
Dave Kleikamp [Mon, 4 Jul 2011 18:38:03 +0000 (18:38 +0000)]
powerpc/44x: don't use tlbivax on AMP systems

Since other OS's may be running on the other cores don't use tlbivax

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
13 years agopowerpc/4xx: Add check_link to struct ppc4xx_pciex_hwops
Tony Breeds [Thu, 30 Jun 2011 20:44:24 +0000 (20:44 +0000)]
powerpc/4xx: Add check_link to struct ppc4xx_pciex_hwops

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 <tony@bakeyournoodle.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
13 years agopowerpc: Dont require a dma_ops struct to set dma mask
Kumar Gala [Fri, 10 Jun 2011 07:22:06 +0000 (02:22 -0500)]
powerpc: Dont require a dma_ops struct to set dma mask

The only reason to require a dma_ops struct is to see if it has
implemented set_dma_mask.  If not we can fall back to setting the mask
directly.

This resolves an issue with how to sequence the setting of a DMA mask
for platform devices.  Before we had an issue in that we have no way of
setting the DMA mask before the various low level bus notifiers get
called that might check it (swiotlb).

So now we can do:

pdev = platform_device_alloc("foobar", 0);
dma_set_mask(&pdev->dev, DMA_BIT_MASK(37));
platform_device_add(pdev);

And expect the right thing to happen with the bus notifiers get called
via platform_device_add.

Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
13 years agopowerpc: implement arch_setup_pdev_archdata
Kumar Gala [Fri, 8 Jul 2011 05:17:27 +0000 (00:17 -0500)]
powerpc: implement arch_setup_pdev_archdata

We have a long standing issues with platform devices not have a valid
dma_mask pointer.  This hasn't been an issue to date as no platform
device has tried to set its dma_mask value to a non-default value.

Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
13 years agodriver core: Add ability for arch code to setup pdev_archdata
Kumar Gala [Fri, 10 Jun 2011 06:52:57 +0000 (01:52 -0500)]
driver core: Add ability for arch code to setup pdev_archdata

On some architectures we need to setup pdev_archdata before we add the
device.  Waiting til a bus_notifier is too late since we might need the
pdev_archdata in the bus notifier.  One example is setting up of dma_mask
pointers such that it can be used in a bus_notifier.

We add weak noop version of arch_setup_pdev_archdata() and allow the arch
code to override with access the full definitions of struct device,
struct platform_device, and struct pdev_archdata.

Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
13 years agopowerpc: Create next_tlbcam_idx percpu variable for FSL_BOOKE
Becky Bruce [Tue, 28 Jun 2011 19:54:47 +0000 (14:54 -0500)]
powerpc: Create next_tlbcam_idx percpu variable for FSL_BOOKE

This is used to round-robin TLBCAM entries.

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
13 years agopowerpc/p1022ds: Remove fixed-link property from ethernet nodes.
Felix Radensky [Thu, 7 Jul 2011 07:37:50 +0000 (10:37 +0300)]
powerpc/p1022ds: Remove fixed-link property from ethernet nodes.

On P1022DS both ethernet controllers are connected to RGMII PHYs
accessible via MDIO bus. Remove fixed-link property from ethernet
nodes as they only required when fixed link PHYs without MDIO bus
are used.

Signed-off-by: Felix Radensky <felix@embedded-sol.com>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
13 years agopowerpc/85xx: Remove stale BUG_ON in mpc85xx_smp_init
Laurentiu TUDOR [Thu, 7 Jul 2011 13:44:30 +0000 (16:44 +0300)]
powerpc/85xx: Remove stale BUG_ON in mpc85xx_smp_init

Under the FSL Hypervisor we triggered a BUG_ON in mpc85xx_smp_init that
expected smp_ops.message_pass to be explicity set.  However recent
changes allows smp_ops.message_pass to be NULL and handled by default
code.  Thus the BUG_ON isn't relevant anymore.

Signed-off-by: Laurentiu TUDOR <Laurentiu.Tudor@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
13 years agopowerpc/85xx: Add p2040 RDB board support
Mingkai Hu [Tue, 28 Jun 2011 07:52:34 +0000 (15:52 +0800)]
powerpc/85xx: Add p2040 RDB board support

P2040RDB Specification:
-----------------------
2Gbyte unbuffered DDR3 SDRAM SO-DIMM(64bit bus)
128 Mbyte NOR flash single-chip memory
256 Kbit M24256 I2C EEPROM
16 Mbyte SPI memory
SD connector to interface with the SD memory card
dTSEC1: connected to the Vitesse SGMII PHY (VSC8221)
dTSEC2: connected to the Vitesse SGMII PHY (VSC8221)
dTSEC3: connected to the Vitesse SGMII PHY (VSC8221)
dTSEC4: connected to the Vitesse RGMII PHY (VSC8641)
dTSEC5: connected to the Vitesse RGMII PHY (VSC8641)
I2C1: Real time clock, Temperature sensor
I2C2: Vcore Regulator, 256Kbit I2C Bus EEPROM
SATA: Lanes C and Land D of Bank2 are connected to two SATA connectors
UART: supports two UARTs up to 115200 bps for console
USB 2.0: connected via a internal UTMI PHY to two TYPE-A interfaces
PCIe:
 - Lanes E, F, G and H of Bank1 are connected to one x4 PCIe SLOT1
 - Lanes C and Land D of Bank2 are connected to one x4 PCIe SLOT2

Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
13 years agopowerpc/85xx: add hypervisor config entries to corenet_smp_defconfig
Timur Tabi [Tue, 14 Jun 2011 19:06:15 +0000 (14:06 -0500)]
powerpc/85xx: add hypervisor config entries to corenet_smp_defconfig

CONFIG_PPC_EPAPR_HV_BYTECHAN adds support for the Freescale hypervisor
byte channel tty driver.

CONFIG_VIRT_DRIVERS and CONFIG_FSL_HV_MANAGER add support for the Freescale
hypervisor management driver.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
13 years agodrivers/virt: introduce Freescale hypervisor management driver
Timur Tabi [Thu, 9 Jun 2011 20:52:06 +0000 (15:52 -0500)]
drivers/virt: introduce Freescale hypervisor management driver

Add the drivers/virt directory, which houses drivers that support
virtualization environments, and add the Freescale hypervisor management
driver.

The Freescale hypervisor management driver provides several services to
drivers and applications related to the Freescale hypervisor:

1. An ioctl interface for querying and managing partitions

2. A file interface to reading incoming doorbells

3. An interrupt handler for shutting down the partition upon receiving the
   shutdown doorbell from a manager partition

4. A kernel interface for receiving callbacks when a managed partition
   shuts down.

Signed-off-by: Timur Tabi <timur@freescale.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
13 years agopowerpc/85xx: Add P5020 SoC device tree include stub
Kumar Gala [Thu, 23 Jun 2011 12:19:15 +0000 (07:19 -0500)]
powerpc/85xx: Add P5020 SoC device tree include stub

Split out common (non-board specific) parts of the SoC related device
tree into a stub so multiple board dts files can include it and we can
reduce duplication and maintenance effort.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
13 years agopowerpc/85xx: Add P3041 SoC device tree include stub
Kumar Gala [Mon, 27 Jun 2011 12:53:24 +0000 (07:53 -0500)]
powerpc/85xx: Add P3041 SoC device tree include stub

Split out common (non-board specific) parts of the SoC related device
tree into a stub so multiple board dts files can include it and we can
reduce duplication and maintenance effort.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
13 years agopowerpc: Use -mtraceback=no
Anton Blanchard [Thu, 30 Jun 2011 13:55:27 +0000 (13:55 +0000)]
powerpc: Use -mtraceback=no

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 part

gcc 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 <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: Add jump label support
Michael Ellerman [Wed, 29 Jun 2011 19:16:59 +0000 (19:16 +0000)]
powerpc: Add jump label support

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 <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/hvsi: Fix conflict with old HVSI driver
Benjamin Herrenschmidt [Fri, 1 Jul 2011 03:10:21 +0000 (13:10 +1000)]
powerpc/hvsi: Fix conflict with old HVSI driver

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 <benh@kernel.crashing.org>
13 years agopowerpc: Fix build problem with default ppc_md.progress commit
Benjamin Herrenschmidt [Fri, 1 Jul 2011 03:00:21 +0000 (13:00 +1000)]
powerpc: Fix build problem with default ppc_md.progress commit

a9c0f41b3a64955fd6f4e9d66ae1df1cbdee0cd0 breaks the build
on some platforms. The extern declaration must be shielded
against assembly.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: Add printk companion for ppc_md.progress
Dave Carroll [Sat, 18 Jun 2011 07:36:40 +0000 (07:36 +0000)]
powerpc: Add printk companion for ppc_md.progress

This patch adds a printk companion to replace the udbg progress function
when initmem is freed.

Suggested-by: Milton Miller <miltonm@bga.com>
Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Carroll <dcarroll@astekcorp.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: Move free_initmem to common code
Dave Carroll [Sat, 18 Jun 2011 07:36:39 +0000 (07:36 +0000)]
powerpc: Move free_initmem to common code

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 <miltonm@bga.com>
Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Carroll <dcarroll@astekcorp.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agoMerge remote branch 'origin/master' into next
Benjamin Herrenschmidt [Thu, 30 Jun 2011 05:23:59 +0000 (15:23 +1000)]
Merge remote branch 'origin/master' into next

13 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Thu, 30 Jun 2011 01:18:48 +0000 (18:18 -0700)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6

* '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

13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Thu, 30 Jun 2011 01:10:54 +0000 (18:10 -0700)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: caam - fix operator precedence in shared descriptor allocation

13 years agodrm/radeon/kms: increase rom size for atrm method
Alex Deucher [Fri, 24 Jun 2011 13:15:38 +0000 (13:15 +0000)]
drm/radeon/kms: increase rom size for atrm method

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 <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agocrypto: caam - fix operator precedence in shared descriptor allocation
Kim Phillips [Thu, 26 May 2011 03:30:34 +0000 (13:30 +1000)]
crypto: caam - fix operator precedence in shared descriptor allocation

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 <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
13 years agoMerge branch 'kvm-updates/3.0' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Wed, 29 Jun 2011 18:07:20 +0000 (11:07 -0700)]
Merge branch 'kvm-updates/3.0' of git://git./virt/kvm/kvm

* '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

13 years agoMerge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvar...
Linus Torvalds [Wed, 29 Jun 2011 18:07:02 +0000 (11:07 -0700)]
Merge branch 'i2c-for-linus' of git://git./linux/kernel/git/jdelvare/staging

* '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

13 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Wed, 29 Jun 2011 18:03:27 +0000 (11:03 -0700)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* '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

13 years agoahci: change 'masking port_map' printk to KERN_WARNING level
Linus Torvalds [Wed, 29 Jun 2011 17:10:07 +0000 (10:10 -0700)]
ahci: change 'masking port_map' printk to KERN_WARNING level

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 <jgarzik@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoi2c/pca954x: Initialize the mux to disconnected state
Petri Gynther [Wed, 29 Jun 2011 09:36:11 +0000 (11:36 +0200)]
i2c/pca954x: Initialize the mux to disconnected state

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 @ 0x50

1. 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 <pgynther@google.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org
13 years agoi2c-taos-evm: Fix log messages
Jean Delvare [Wed, 29 Jun 2011 09:36:10 +0000 (11:36 +0200)]
i2c-taos-evm: Fix log messages

* 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 <khali@linux-fr.org>
Cc: stable@kernel.org
13 years agopowerpc/pseries: Move hvsi support into a library
Benjamin Herrenschmidt [Fri, 29 Apr 2011 06:44:24 +0000 (16:44 +1000)]
powerpc/pseries: Move hvsi support into a library

This will allow a different backend to share it

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/pseries: Re-implement HVSI as part of hvc_vio
Benjamin Herrenschmidt [Thu, 12 May 2011 03:46:38 +0000 (13:46 +1000)]
powerpc/pseries: Re-implement HVSI as part of hvc_vio

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 console

This 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 <benh@kernel.crashing.org>
13 years agopowerpc/udbg: Register udbg console generically
Benjamin Herrenschmidt [Thu, 16 Jun 2011 15:08:37 +0000 (15:08 +0000)]
powerpc/udbg: Register udbg console generically

When CONFIG_PPC_EARLY_DEBUG is set, call register_early_udbg_console()
early from generic code.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/pseries: Factor HVSI header struct in packet definitions
Benjamin Herrenschmidt [Thu, 16 Jun 2011 15:08:24 +0000 (15:08 +0000)]
powerpc/pseries: Factor HVSI header struct in packet definitions

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 <benh@kernel.crashing.org>
13 years agopowerpc/hvsi: Move HVSI protocol definitions to a header file
Benjamin Herrenschmidt [Thu, 16 Jun 2011 15:08:12 +0000 (15:08 +0000)]
powerpc/hvsi: Move HVSI protocol definitions to a header file

This moves various HVSI protocol definitions from the hvsi.c
driver to a header file that can be used later on by a udbg
implementation

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/maple: Register CPC925 EDAC device on all boards with CPC925
Dmitry Eremin-Solenikov [Fri, 17 Jun 2011 02:51:46 +0000 (02:51 +0000)]
powerpc/maple: Register CPC925 EDAC device on all boards with CPC925

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 <dbaryshkov@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/pseries: Improve error code on reconfiguration notifier failure
Akinobu Mita [Tue, 21 Jun 2011 03:35:56 +0000 (03:35 +0000)]
powerpc/pseries: Improve error code on reconfiguration notifier failure

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 <akinobu.mita@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/pseries: Introduce pSeries_reconfig_notify()
Akinobu Mita [Tue, 21 Jun 2011 03:35:55 +0000 (03:35 +0000)]
powerpc/pseries: Introduce pSeries_reconfig_notify()

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 <akinobu.mita@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/maple: Enable scom access functions on Maple
Dmitry Eremin-Solenikov [Fri, 17 Jun 2011 03:10:06 +0000 (03:10 +0000)]
powerpc/maple: Enable scom access functions on Maple

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 <dbaryshkov@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: mem_init should call memblock_is_reserved with phys_addr_t
Becky Bruce [Tue, 28 Jun 2011 09:54:46 +0000 (09:54 +0000)]
powerpc: mem_init should call memblock_is_reserved with phys_addr_t

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 <beckyb@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: Whitespace fix to include/asm/pgtable-ppc64.h
Becky Bruce [Tue, 28 Jun 2011 09:06:54 +0000 (09:06 +0000)]
powerpc: Whitespace fix to include/asm/pgtable-ppc64.h

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/book3e-64: use a separate TLB handler when linear map is bolted
Scott Wood [Wed, 22 Jun 2011 11:25:42 +0000 (11:25 +0000)]
powerpc/book3e-64: use a separate TLB handler when linear map is bolted

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 <scottwood@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agoKVM: x86 emulator: fix %rip-relative addressing with immediate source operand
Avi Kivity [Sun, 19 Jun 2011 16:21:11 +0000 (19:21 +0300)]
KVM: x86 emulator: fix %rip-relative addressing with immediate source operand

%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 <xin.li@intel.com>.

Signed-off-by: Avi Kivity <avi@redhat.com>
Acked-by: Li Xin <xin.li@intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
13 years agopowerpc/book3e-64: Reraise doorbell when masked by soft-irq-disable
Scott Wood [Wed, 22 Jun 2011 11:19:49 +0000 (11:19 +0000)]
powerpc/book3e-64: Reraise doorbell when masked by soft-irq-disable

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agoarch/powerpc: use printk_ratelimited instead of printk_ratelimit
Christian Dietrich [Sat, 4 Jun 2011 05:36:54 +0000 (05:36 +0000)]
arch/powerpc: use printk_ratelimited instead of printk_ratelimit

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 <christian.dietrich@informatik.uni-erlangen.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/rtas-rtc: remove sideeffects of printk_ratelimit
Christian Dietrich [Sat, 4 Jun 2011 05:35:47 +0000 (05:35 +0000)]
powerpc/rtas-rtc: remove sideeffects of printk_ratelimit

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 <christian.dietrich@informatik.uni-erlangen.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agoMerge remote branch 'jwb/next' into next
Benjamin Herrenschmidt [Wed, 29 Jun 2011 02:45:43 +0000 (12:45 +1000)]
Merge remote branch 'jwb/next' into next

13 years agopowerpc/pseries: remove duplicate SCSI_BNX2_ISCSI in pseries_defconfig
Michael Neuling [Mon, 27 Jun 2011 19:55:30 +0000 (19:55 +0000)]
powerpc/pseries: remove duplicate SCSI_BNX2_ISCSI in pseries_defconfig

Remove duplicate assignment of SCSI_BNX2_ISCSI in pseries_defconfig
introduced by:
  37e0c21e powerpc/pseries: Enable iSCSI support for a number of cards

causes warning:
arch/powerpc/configs/pseries_defconfig:151:warning: override: reassigning to symbol SCSI_BNX2_ISCSI

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agoMerge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keith...
Linus Torvalds [Tue, 28 Jun 2011 18:15:57 +0000 (11:15 -0700)]
Merge branch 'drm-intel-fixes' of git://git./linux/kernel/git/keithp/linux-2.6

* '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

13 years agoMerge branch 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Tue, 28 Jun 2011 18:15:36 +0000 (11:15 -0700)]
Merge branch 'driver-core-linus' of git://git./linux/kernel/git/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

13 years agoMerge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Tue, 28 Jun 2011 18:15:17 +0000 (11:15 -0700)]
Merge branch 'usb-linus' of git://git./linux/kernel/git/gregkh/usb-2.6

* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  MAINTAINERS: add myself as maintainer of USB/IP
  usb: r8a66597-hcd: fix cannot detect low/full speed device
  USB: ehci-ath79: fix a NULL pointer dereference
  USB: Add new FT232H chip to drivers/usb/serial/ftdi_sio.c
  usb/isp1760: Fix bug preventing the unlinking of control urbs
  USB: Fix up URB error codes to reflect implementation.
  xhci: Always set urb->status to zero for isoc endpoints.
  xhci: Add reset on resume quirk for asrock p67 host
  xHCI 1.0: Incompatible Device Error
  USB: don't let errors prevent system sleep
  USB: don't let the hub driver prevent system sleep
  USB: change maintainership of ohci-hcd and ehci-hcd
  xHCI 1.0: Force Stopped Event(FSE)
  xhci: Don't warn about zeroed bMaxBurst descriptor field.
  USB: Free bandwidth when usb_disable_device is called.
  xhci: Reject double add of active endpoints.
  USB: TI 3410/5052 USB Serial Driver: Fix mem leak when firmware is too big.
  usb: musb: gadget: clear TXPKTRDY flag when set FLUSHFIFO
  usb: musb: host: compare status for negative error values

13 years agoMerge branch 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Tue, 28 Jun 2011 18:14:55 +0000 (11:14 -0700)]
Merge branch 'tty-linus' of git://git./linux/kernel/git/gregkh/tty-2.6

* 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
  serial: bcm63xx_uart: fix irq storm after rx fifo overrun.
  amba pl011: platform data for reg lockup and glitch v2
  amba pl011: workaround for uart registers lockup
  tty: n_gsm: improper skb_pull() use was leaking framed data
  tty: n_gsm: Fixed logic to decode break signal from modem status
  TTY: ntty, add one more sanity check
  TTY: ldisc, do not close until there are readers
  8250: Fix capabilities when changing the port type
  8250_pci: Fix missing const from merges
  ARM: SAMSUNG: serial: Fix on handling of one clock source for UART
  serial: ioremap warning fix for jsm driver.
  8250_pci: add -ENODEV code for Intel EG20T PCH

13 years agoMerge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Tue, 28 Jun 2011 18:14:22 +0000 (11:14 -0700)]
Merge branch 'staging-linus' of git://git./linux/kernel/git/gregkh/staging-2.6

* 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6:
  Staging: comedi: fix build breakages on some platforms
  Staging: brcm80211: disable drivers except for X86 or MIPS platforms
  Staging: brcm80211: disable drivers for PPC platforms
  Staging: iio: Make IIO depend on GENERIC_HARDIRQS
  Staging: mei: fix suspend failure
  Staging: fix iio builds when IIO_RING_BUFFER is not enabled
  Staging: Comedi: Build only on arches providing PAGE_KERNEL_NOCACHE
  Staging: fix more iio builds when IIO_RING_BUFFER is not enabled

13 years agoMerge branch 'for-linus' of git://neil.brown.name/md
Linus Torvalds [Tue, 28 Jun 2011 18:14:00 +0000 (11:14 -0700)]
Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md:
  md: avoid endless recovery loop when waiting for fail device to complete.

13 years agodrm/i915: Use chipset-specific irq installers
Chris Wilson [Tue, 28 Jun 2011 10:48:51 +0000 (11:48 +0100)]
drm/i915: Use chipset-specific irq installers

Konstantin Belousov pointed out that 4697995b98417 replaced the generic
i915_driver_irq_*install() functions with chipset specific routines
accessible only through driver->irq_*install(). So update the sanity
check in i915_request_wait() to match.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Keith Packard <keithp@keithp.com>
13 years agodrm/i915: forcewake fix after reset
Ben Widawsky [Fri, 24 Jun 2011 21:31:47 +0000 (14:31 -0700)]
drm/i915: forcewake fix after reset

The failure is as follows:

1. Userspace gets forcewake lock, lock count >=1
2. GPU hang/reset occurs (forcewake bit is reset)
3. count is now incorrect

The failure can only occur when using the forcewake userspace lock.

This has the unfortunate consequence of messing up the driver as well as
userspace, unless userspace closes the debugfs file, the kernel will
never end up waking the GT since the refcount will be > 1.

The solution is to try to recover the correct forcewake state based on
the refcount. There is a period of time where userspace reads/writes may
occur after the reset, before the GT has been forcewaked. The interface
was never designed to be a perfect solution for userspace reads/writes,
and the kernel portion is fixed by this patch.

Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
13 years agoproc: restrict access to /proc/PID/io
Vasiliy Kulikov [Fri, 24 Jun 2011 12:08:38 +0000 (16:08 +0400)]
proc: restrict access to /proc/PID/io

/proc/PID/io may be used for gathering private information.  E.g.  for
openssh and vsftpd daemons wchars/rchars may be used to learn the
precise password length.  Restrict it to processes being able to ptrace
the target process.

ptrace_may_access() is needed to prevent keeping open file descriptor of
"io" file, executing setuid binary and gathering io information of the
setuid'ed process.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agopowerpc/4xx: Update Canyonlands and Glacier boards DTS to add HW RNG support
Mike Williams [Wed, 22 Jun 2011 06:09:43 +0000 (06:09 +0000)]
powerpc/4xx: Update Canyonlands and Glacier boards DTS to add HW RNG support

This will allow the new HW RNG driver to bind on these boards

Signed-off-by: Mike Williams <mike@mikebwilliams.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
13 years agoppc4xx: Add crypto and RNG entries to Sequoia DTS
Josh Boyer [Tue, 21 Jun 2011 12:20:07 +0000 (08:20 -0400)]
ppc4xx: Add crypto and RNG entries to Sequoia DTS

The Sequoia board has a Security function IP block on it that contains a TRNG.
Add the crypto and rng portions of that IP block to the DTS.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
13 years agomd: avoid endless recovery loop when waiting for fail device to complete.
NeilBrown [Tue, 28 Jun 2011 06:59:42 +0000 (16:59 +1000)]
md: avoid endless recovery loop when waiting for fail device to complete.

If a device fails in a way that causes pending request to take a while
to complete, md will not be able to immediately remove it from the
array in remove_and_add_spares.
It will then incorrectly look like a spare device and md will try to
recover it even though it is failed.
This leads to a recovery process starting and instantly aborting over
and over again.

We should check if the device is faulty before considering it to be a
spare.  This will avoid trying to start a recovery that cannot
proceed.

This bug was introduced in 2.6.26 so that patch is suitable for any
kernel since then.

Cc: stable@kernel.org
Reported-by: Jim Paradis <james.paradis@stratus.com>
Signed-off-by: NeilBrown <neilb@suse.de>
13 years agoLinux 3.0-rc5 v3.0-rc5
Linus Torvalds [Tue, 28 Jun 2011 02:12:22 +0000 (19:12 -0700)]
Linux 3.0-rc5

13 years agodrm/i915: more struct_mutex locking
Hugh Dickins [Mon, 27 Jun 2011 23:18:20 +0000 (16:18 -0700)]
drm/i915: more struct_mutex locking

When auditing the locking in i915_gem.c (for a prospective change which
I then abandoned), I noticed two places where struct_mutex is not held
across GEM object manipulations that would usually require it.

Since one is in initial setup and the other in driver unload, I'm
guessing the mutex is not required for either; but post a patch in case
it is.

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Keith Packard <keithp@keithp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrm/i915: use shmem_truncate_range
Hugh Dickins [Mon, 27 Jun 2011 23:18:19 +0000 (16:18 -0700)]
drm/i915: use shmem_truncate_range

The interface to ->truncate_range is changing very slightly: once "tmpfs:
take control of its truncate_range" has been applied, this can be applied.
 For now there is only a slight inefficiency while this remains unapplied,
but it will soon become essential for managing shmem's use of swap.

Change i915_gem_object_truncate() to use shmem_truncate_range() directly:
which should also spare i915 later change if we switch from
inode_operations->truncate_range to file_operations->fallocate.

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Keith Packard <keithp@keithp.com>
Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrm/i915: use shmem_read_mapping_page
Hugh Dickins [Mon, 27 Jun 2011 23:18:18 +0000 (16:18 -0700)]
drm/i915: use shmem_read_mapping_page

Soon tmpfs will stop supporting ->readpage and read_cache_page_gfp(): once
"tmpfs: add shmem_read_mapping_page_gfp" has been applied, this patch can
be applied to ease the transition.

Make i915_gem_object_get_pages_gtt() use shmem_read_mapping_page_gfp() in
the one place it's needed; elsewhere use shmem_read_mapping_page(), with
the mapping's gfp_mask properly initialized.

Forget about __GFP_COLD: since tmpfs initializes its pages with memset,
asking for a cold page is counter-productive.

Include linux/shmem_fs.h also in drm_gem.c: with shmem_file_setup() now
declared there too, we shall remove the prototype from linux/mm.h later.

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Keith Packard <keithp@keithp.com>
Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrm/ttm: use shmem_read_mapping_page
Hugh Dickins [Mon, 27 Jun 2011 23:18:17 +0000 (16:18 -0700)]
drm/ttm: use shmem_read_mapping_page

Soon tmpfs will stop supporting ->readpage and read_mapping_page(): once
"tmpfs: add shmem_read_mapping_page_gfp" has been applied, this patch can
be applied to ease the transition.

ttm_tt_swapin() and ttm_tt_swapout() use shmem_read_mapping_page() in
place of read_mapping_page(), since their swap_space has been created with
shmem_file_setup().

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrivers/tty/serial/8250_pci.c: fix warning
Andrew Morton [Mon, 27 Jun 2011 23:18:16 +0000 (16:18 -0700)]
drivers/tty/serial/8250_pci.c: fix warning

Fis the warning

  drivers/tty/serial/8250_pci.c:1457: warning: initialization from incompatible pointer type

Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrivers/misc/ioc4.c: fix section mismatch / race condition
Ralf Baechle [Mon, 27 Jun 2011 23:18:15 +0000 (16:18 -0700)]
drivers/misc/ioc4.c: fix section mismatch / race condition

Fix this section mismatch:

  WARNING: drivers/misc/ioc4.o(.data+0x144): Section mismatch in reference from the variable ioc4_load_modules_work to the function .devinit.text:ioc4_load_modules()
  The variable ioc4_load_modules_work references
  the function __devinit ioc4_load_modules()
  If the reference is valid then annotate the
  variable with __init* or __refdata (see linux/init.h) or name the variable:
  *driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console

This one is potentially fatal; by the time ioc4_load_modules is invoked
it may already have been freed.  For that reason ioc4_load_modules_work
can't be turned to __devinitdata but also because it's referenced in
ioc4_exit.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Brent Casavant <bcasavan@sgi.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrivers/leds/leds-lp5523.c: fix section mismatches
Ralf Baechle [Mon, 27 Jun 2011 23:18:14 +0000 (16:18 -0700)]
drivers/leds/leds-lp5523.c: fix section mismatches

Fix this section mismatch:

  WARNING: drivers/leds/leds-lp5523.o(.text+0x12f4): Section mismatch in reference from the function lp5523_probe() to the function .init.text:lp5523_init_led()
  The function lp5523_probe() references
  the function __init lp5523_init_led().
  This is often because lp5523_probe lacks a __init
  annotation or the annotation of lp5523_init_led is wrong.

Fixing this one triggers one more mismatch, fix that one as well.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrivers/leds/leds-lp5521.c: fix section mismatches
Ralf Baechle [Mon, 27 Jun 2011 23:18:13 +0000 (16:18 -0700)]
drivers/leds/leds-lp5521.c: fix section mismatches

Fix this section mismatch:

  WARNING: drivers/leds/leds-lp5521.o(.text+0xf2c): Section mismatch in reference from the function lp5521_probe() to the function .init.text:lp5521_init_led()
  The function lp5521_probe() references
  the function __init lp5521_init_led().
  This is often because lp5521_probe lacks a __init
  annotation or the annotation of lp5521_init_led is wrong.

Fixing this mismatch triggers one more mismatch, fix that one as well.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomemcg: fix direct softlimit reclaim to be called in limit path
KAMEZAWA Hiroyuki [Mon, 27 Jun 2011 23:18:12 +0000 (16:18 -0700)]
memcg: fix direct softlimit reclaim to be called in limit path

Commit d149e3b25d7c ("memcg: add the soft_limit reclaim in global direct
reclaim") adds a softlimit hook to shrink_zones().  By this, soft limit
is called as

   try_to_free_pages()
       do_try_to_free_pages()
           shrink_zones()
               mem_cgroup_soft_limit_reclaim()

Then, direct reclaim is memcg softlimit hint aware, now.

But, the memory cgroup's "limit" path can call softlimit shrinker.

   try_to_free_mem_cgroup_pages()
       do_try_to_free_pages()
           shrink_zones()
               mem_cgroup_soft_limit_reclaim()

This will cause a global reclaim when a memcg hits limit.

This is bug. soft_limit_reclaim() should be called when
scanning_global_lru(sc) == true.

And the commit adds a variable "total_scanned" for counting softlimit
scanned pages....it's not "total".  This patch removes the variable and
update sc->nr_scanned instead of it.  This will affect shrink_slab()'s
scan condition but, global LRU is scanned by softlimit and I think this
change makes sense.

TODO: avoid too much scanning of a zone when softlimit did enough work.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Ying Han <yinghan@google.com>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agotaskstats: don't allow duplicate entries in listener mode
Vasiliy Kulikov [Mon, 27 Jun 2011 23:18:11 +0000 (16:18 -0700)]
taskstats: don't allow duplicate entries in listener mode

Currently a single process may register exit handlers unlimited times.
It may lead to a bloated listeners chain and very slow process
terminations.

Eg after 10KK sent TASKSTATS_CMD_ATTR_REGISTER_CPUMASKs ~300 Mb of
kernel memory is stolen for the handlers chain and "time id" shows 2-7
seconds instead of normal 0.003.  It makes it possible to exhaust all
kernel memory and to eat much of CPU time by triggerring numerous exits
on a single CPU.

The patch limits the number of times a single process may register
itself on a single CPU to one.

One little issue is kept unfixed - as taskstats_exit() is called before
exit_files() in do_exit(), the orphaned listener entry (if it was not
explicitly deregistered) is kept until the next someone's exit() and
implicit deregistration in send_cpu_listeners().  So, if a process
registered itself as a listener exits and the next spawned process gets
the same pid, it would inherit taskstats attributes.

Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomm: fix assertion mapping->nrpages == 0 in end_writeback()
Jan Kara [Mon, 27 Jun 2011 23:18:10 +0000 (16:18 -0700)]
mm: fix assertion mapping->nrpages == 0 in end_writeback()

Under heavy memory and filesystem load, users observe the assertion
mapping->nrpages == 0 in end_writeback() trigger.  This can be caused by
page reclaim reclaiming the last page from a mapping in the following
race:

CPU0 CPU1
  ...
  shrink_page_list()
    __remove_mapping()
      __delete_from_page_cache()
        radix_tree_delete()
evict_inode()
  truncate_inode_pages()
    truncate_inode_pages_range()
      pagevec_lookup() - finds nothing
  end_writeback()
    mapping->nrpages != 0 -> BUG
        page->mapping = NULL
        mapping->nrpages--

Fix the problem by doing a reliable check of mapping->nrpages under
mapping->tree_lock in end_writeback().

Analyzed by Jay <jinshan.xiong@whamcloud.com>, lost in LKML, and dug out
by Miklos Szeredi <mszeredi@suse.de>.

Cc: Jay <jinshan.xiong@whamcloud.com>
Cc: Miklos Szeredi <mszeredi@suse.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomm/memory-failure.c: fix spinlock vs mutex order
Peter Zijlstra [Mon, 27 Jun 2011 23:18:09 +0000 (16:18 -0700)]
mm/memory-failure.c: fix spinlock vs mutex order

We cannot take a mutex while holding a spinlock, so flip the order and
fix the locking documentation.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>