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>
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>
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>
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>
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>
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>
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>
The Freescale hypervisor does not allow guests to write to the timebase
registers (virtualizing the timebase register was deemed too complicated),
so don't try to synchronize the timebase registers when we're running
under the hypervisor.
This typically happens when kexec support is enabled.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
P1010RDB Overview
-----------------
1Gbyte DDR3 (on board DDR)
32Mbyte 16bit NOR flash
32Mbyte SLC NAND Flash
256 Kbit M24256 I2C EEPROM
128 Mbit SPI Flash memory
I2C Board 128x8 bit memory
SD/MMC connector to interface with the SD memory card
2 SATA interface
1 internal SATA connect to 2.5. 160G SATA2 HDD
1 eSATA connector to rear panel
USB 2.0
x1 USB 2.0 port: connected via a UTMI PHY to Mini-AB interface.
x1 USB 2.0 port: directly connected to Mini-AB interface Ethernet
eTSEC1: Connected to RGMII PHY VSC8641XKO
eTSEC2: Connected to SGMII PHY VSC8221
eTSEC3: Connected to SGMII PHY VSC8221 eCAN
Two DB-9 female connectors for Field bus interface UART
DUART interface: supports two UARTs up to 115200 bps for console display
Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Enable framebuffer console support by default in the defconfig on the
Freescale MPC8610 HPCD reference board. This allows the boot messages to
be shown on the video display.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
mpc8610hpcd_set_pixel_clock() calculates the correct value of the PXCLK
bits in the CLKDVDR register for a given pixel clock rate. The code which
performs this calculation is overly complicated and includes an error
estimation routine that doesn't work most of the time anyway. Replace the
code with the simpler routine that's currently used on the P1022DS.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Enable framebuffer console support by default in the defconfigs for the
Freescale 85xx-based reference board. This allows the boot messages to
be shown on the video display on the P1022DS.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
To ensure that the DIU pixel clock will not be set to an invalid value,
clamp the PXCLK divider to the allowed range (2-255). This also acts as
a limiter for the pixel clock.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
e500mc cannot doze or nap due to an erratum (as well as having a
different mechanism than previous e500), but it has a "wait" instruction
that is similar to doze.
On 64-bit, due to the soft-irq-disable mechanism, the existing
book3e_idle should be used instead.
Signed-off-by: Vakul Garg <vakul@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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>
The platform file for the Freecale P1022DS reference board is not freeing
the ioremap() mapping of the PIXIS and global utilities nodes it creates.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
fsl-lbc driver requires an interrupt to bind to localbus device.
Populate 85xx boards' dts trees with lbc interrupt info.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
FSL PCIe controller can act as agent(EP) or host(RC). Under Agent(EP) mode
the controller will be configured by the host system. So its not required
to be registered with the PCI(e) sub-system. We only register the
controller if its configured in host(RC) mode.
Signed-off-by: Vivek Mahajan <vivek.mahajan@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Add support for the ePAPR-compliant Freescale hypervisor (aka "Topaz") on
the Freescale P3041DS, P4080DS, and P5020DS reference boards.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Add functions to restart and halt the current partition when running under
the Freescale hypervisor. These functions should be assigned to various
function pointers of the ppc_md structure during the .probe() function for
the board:
ppc_md.restart = fsl_hv_restart;
ppc_md.power_off = fsl_hv_halt;
ppc_md.halt = fsl_hv_halt;
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The Freescale ePAPR reference hypervisor provides interrupt controller
services via a hypercall interface, instead of emulating the MPIC
controller. This is called the VMPIC.
The ePAPR "virtual interrupt controller" provides interrupt controller
services for external interrupts. External interrupts received by a
partition can come from two sources:
- Hardware interrupts - hardware interrupts come from external
interrupt lines or on-chip I/O devices.
- Virtual interrupts - virtual interrupts are generated by the hypervisor
as part of some hypervisor service or hypervisor-created virtual device.
Both types of interrupts are processed using the same programming model and
same set of hypercalls.
Signed-off-by: Ashish Kalra <ashish.kalra@freescale.com>
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
ePAPR hypervisors provide operating system services via a "hypercall"
interface. The following steps need to be performed to make an hcall:
1. Load r11 with the hcall number
2. Load specific other registers with parameters
3. Issue instrucion "sc 1"
4. The return code is in r3
5. Other returned parameters are in other registers.
To provide this service to the kernel, these steps are wrapped in inline
assembly functions. Standard ePAPR hcalls are in epapr_hcalls.h, and
Freescale extensions are in fsl_hcalls.h.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Move irq_choose_cpu() into arch/powerpc/kernel/irq.c so that it can be used
by other PIC drivers. The function is not MPIC-specific.
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
We need the FSL specific header fixup code on both 32-bit and 64-bit
platforms so just move the code into pci-common.c.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The P1023 processor is an e500v2 based SoC that utilizes the DPAA
networking architecture. This adds basic board support for non-DPAA
functionality (device tree, board file, etc).
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
We expect this is actually faster, and we end up needing more space than we
can get from the SPRGs in some instances. This is also useful when running
as a guest OS - SPRGs4-7 do not have guest versions.
8 slots are allocated in thread_info for this even though we only actually
use 4 of them - this allows space for future code to have more scratch
space (and we know we'll need it for things like hugetlb).
Signed-off-by: Ashish Kalra <Ashish.Kalra@freescale.com>
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
In cases like when the platform is used under hypervisor we will NOT
have an MPIC controller but still want doorbells setup.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
We fixup every FSL PCIe Root Complex we need to fixup a few things.
Rather than adding every device under the sun we move to just matching
only on the vendor (PCI_VENDOR_ID_FREESCALE) and than check that we are
a PCIe controller in host mode in the fixup.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Several changes on PCIe support on P3041DS/P4080DS/P5020DS boards:
* Add support for "fsl,qoriq-pcie-v2.2" needed by P3041 & P5020
* Removed support for setting primary_phb_addr as we have no ISA need
* Add PCI controller to of_platform_bus_probe (for EDAC)
* Cleanup building w/SWIOTLB off on P4080DS (not stricly PCIe related)
Signed-off-by: Kai.Jiang <Kai.Jiang@freescale.com>
Signed-off-by: Laurentiu TUDOR <Laurentiu.Tudor@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* Added BSD dual-license
* Moved mpic-parent to root so we dont need to duplicate everywhere
* Added next level cache from L2 to CPC
* Moved to 4-cell MPIC interrupt properties
* Added 3 MSI banks
* Added numerous missing nodes: soc-sram-error, guts, pins, clockgen,
rcpm, sfp, serdes, etc.
* Reworked PCIe interrupts to be at virtual bridge level
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Add basic device tree for P3041DS board. This device tree excludes
support for DPAA and RapidIO nodes.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Add basic device tree for P5020DS board. This device tree excludes
support for DPAA and RapidIO nodes.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The e500mc and e5500 based cores are only available on corenet based
SoCs. We use this name for the P204x, P3040, P4040, P4080, P50x0 SoCs
and any future processors in these families.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Rather than trying to use the core name we use corenet to distinquish
the platform/core combo. corenet64 will be a 64-bit kernel build and
we'll add a new defconfig for corenet32 for a 32-bit platforms.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
doorbell type is defined as bits 32:36 so should be shifted by 63-36 =
27 rather than 28.
We never noticed this bug as we've only every used type PPC_DBELL = 0.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Support compilation of mpic.c with DEBUG defined, as now we have irq_desc and
not irq number.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
On many platforms (including pSeries), smp_ops->message_pass is always
smp_muxed_ipi_message_pass. This changes arch/powerpc/kernel/smp.c so
that if smp_ops->message_pass is NULL, it calls smp_muxed_ipi_message_pass
directly.
This means that a platform doesn't need to set both .message_pass and
.cause_ipi, only one of them. It is a slight performance improvement
in that it gets rid of an indirect function call at the expense of a
predictable conditional branch.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
smp_release_cpus() waits for all cpus (including the bootcpu) due to an
off-by-one count on boot_cpu_count (which is all CPUs). This patch replaces
that with spinning_secondaries (which is all secondary CPUs).
Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Before if we didn't support or enable HW table walk we'd get a messaage
like:
MMU: Book3E Page Tables Disabled
Which is a bit misleading. Now it will say:
MMU: Book3E HW tablewalk not supported
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
The Apple custom PIC only exist in some earlier machine models,
anything with an MPIC will crash on suspend if we register those
syscore ops unconditionally.
This is a regression caused by commit f5a592f7d7 ("PM / PowerPC: Use
struct syscore_ops instead of sysdevs for PM")
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
32bit and 64bit on x86 are tested and working. The rest I have looked
at closely and I can't find any problems.
setns is an easy system call to wire up. It just takes two ints so I
don't expect any weird architecture porting problems.
While doing this I have noticed that we have some architectures that are
very slow to get new system calls. cris seems to be the slowest where
the last system calls wired up were preadv and pwritev. avr32 is weird
in that recvmmsg was wired up but never declared in unistd.h. frv is
behind with perf_event_open being the last syscall wired up. On h8300
the last system call wired up was epoll_wait. On m32r the last system
call wired up was fallocate. mn10300 has recvmmsg as the last system
call wired up. The rest seem to at least have syncfs wired up which was
new in the 2.6.39.
v2: Most of the architecture support added by Daniel Lezcano <dlezcano@fr.ibm.com>
v3: ported to v2.6.36-rc4 by: Eric W. Biederman <ebiederm@xmission.com>
v4: Moved wiring up of the system call to another patch
v5: ported to v2.6.39-rc6
v6: rebased onto parisc-next and net-next to avoid syscall conflicts.
v7: ported to Linus's latest post 2.6.39 tree.
> arch/blackfin/include/asm/unistd.h | 3 ++-
> arch/blackfin/mach-common/entry.S | 1 +
Acked-by: Mike Frysinger <vapier@gentoo.org>
Oh - ia64 wiring looks good.
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
