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2012-12-14powerpc+of: Rename and fix OF reconfig notifier error inject moduleBenjamin Herrenschmidt3-18/+18
This module used to inject errors in the pSeries specific dynamic reconfiguration notifiers. Those are gone however, replaced by generic notifiers for changes to the device-tree. So let's update the module to deal with these instead and rename it along the way. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Akinobu Mita <akinobu.mita@gmail.com>
2012-11-29powerpc+of: Export of_reconfig_notifier_[register,unregister]Nathan Fontenot1-0/+2
The of reconfiguration notification chains should be exported for use by modules. Signed-off-by:Nathan Fontenot <nfont@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-26Merge remote-tracking branch 'kumar/next' into nextBenjamin Herrenschmidt10-20/+250
Freescale updates from Kumar
2012-11-26Merge branch 'merge' into nextBenjamin Herrenschmidt995-11224/+13864
Merge my own merge branch to get various fixes from there and upstream, especially the hvc console tty refcouting fixes which which testing is quite a bit harder...
2012-11-26powerpc/eeh: Do not invalidate PE properlyGavin Shan1-1/+1
While the EEH does recovery on the specific PE that has PCI errors, the PCI devices belonging to the PE will be removed and the PE will be marked as invalid since we still need the information stored in the PE. We only invalidate the PE when it doesn't have associated EEH devices and valid child PEs. However, the code used to check that is wrong. The patch fixes that. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-25powerpc/dma/raidengine: add raidengine deviceXuelin Shi4-0/+173
The RaidEngine is a new Freescale hardware that used for parity computation offloading in RAID5/6. This patch adds the device node in device tree and related binding documentation. Signed-off-by: Harninder Rai <harninder.rai@freescale.com> Signed-off-by: Naveen Burmi <naveenburmi@freescale.com> Signed-off-by: Xuelin Shi <b29237@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-11-25powerpc/iommu/fsl: Add PAMU bypass enable register to ccsr_guts structVarun Sethi1-1/+3
PAMU bypass enable register added to the ccsr_guts structure. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-11-25powerpc/mpc85xx: Change spin table to cached memoryYork Sun1-13/+36
ePAPR v1.1 requires the spin table to be in cached memory. So we need to change the call argument of ioremap to enable cache and coherence. We also flush the cache after writing to spin table to keep it compatible with previous cache-inhibit spin table. Flushing before and after accessing spin table is recommended by ePAPR. Signed-off-by: York Sun <yorksun@freescale.com> Acked-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-11-25powerpc/fsl-pci: Add PCI controller ATMU PM supportJia Hongtao1-2/+35
Power supply for PCI controller ATMU registers is off when system go to deep-sleep state. So ATMU registers should be re-setup during PCI controllers resume from sleep. Signed-off-by: Jia Hongtao <B38951@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-11-25powerpc/86xx: fsl_pcibios_fixup_bus requires CONFIG_PCITimur Tabi1-0/+2
Function fsl_pcibios_fixup_bus() is available only if PCI is enabled. The MPC8610 HPCD platform file was not protecting the assigned with an #ifdef, which results in a link failure when PCI is disabled. Every other platform already has this #ifdef. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-11-25drivers/virt: the Freescale hypervisor driver doesn't need to check MSR[GS]Timur Tabi1-3/+0
The MSR[GS] bit indicates whether the kernel is running in processor guest state mode, but such a check is unnecessary. The driver already checks for the /hypervisor node and the fsl,hv-version property, so it already knows that it's running under the Freescale hypervisor. There is nothing in the driver that inherently requires guest state, anyway. This fixes a break that can occur in some randconfig builds. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-11-25powerpc/85xx: p1022ds: Use NULL instead of 0 for pointersTushar Behera1-1/+1
The third argument for of_get_property() is a pointer, hence pass NULL instead of 0. Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-11-23powerpc/pseries: Fix oops with MSIs when missing EEH PEsAlexey Kardashevskiy1-1/+2
The new EEH code introduced a small regression, if the EEH PEs are missin (which happens currently in qemu for example), it will deref a NULL pointer in the MSI code. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-21Merge remote-tracking branch 'agust/merge' into mergeBenjamin Herrenschmidt4-11/+17
Anatolij 52xx updates: Patch for pcm030 device tree fixing the probe() in pcm030-audio-fabric driver. Changes to this driver have been merged in 3.7-rc1 via ASoC tree, but this required device tree patch was submitted separately to the linux-ppc list and is still missing in mainline. Without this patch the probe() in pcm030-audio-fabric driver wrongly returns -ENODEV. A patch from Wolfram fixing wrong invalid critical irq warnings for all mpc5200 boards. Another patch for all mpc5200 device trees fixing wrong L1 cell in the LPB FIFO interrupt property and moving the LPB FIFO node to the common mpc5200b.dtsi file so that this common node will be present in all mpc5200 device trees.
2012-11-15powerpc: Disable relocation on exceptions when kexecingIan Munsie1-0/+33
Since we don't know if they new kernel we are kexecing into has been built to support relocation on exceptions, we disable them before we kexec. We do NOT disable them if we are execing a kdump kernel, because we want to change as little state as possible and it is likely that we are execing ourselves and will be able to handle them anyway. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Enable relocation on during exceptions at bootIan Munsie1-0/+38
We currently do this synchronously at boot from setup_arch. On a large system this could hypothetically take a little while to complete, so currently we will give up if we are asked to wait for more than a second in total. If we actually start hitting that timeout in practice we can always move this code into a kernel thread to take care of it in the background. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Move get_longbusy_msecs into hvcall.h and remove duplicate functionIan Munsie3-40/+20
I am going to use this in the next patch, better to have this code in one place rather than three. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Add wrappers to enable/disable relocation on exceptionsIan Munsie1-0/+25
These wrappers hide the parameters that have to be passed to H_SET_MODE to enable/disable relocation on during exceptions. As noted in the comments, since these have partition wide scope, they may take some time to complete and must be periodically retried until H_SUCCESS is returned. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Add set_mode hcallIan Munsie4-2/+12
This new hcall in POWER8 is used to set various resource mode registers. eg. it can set address translation mode on interrupt (note: partition wide scope) Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Setup relocation on exceptions for bare metal systemsMichael Neuling2-0/+4
This turns on MMU on execptions via AIL field in the LPCR. Signed-off-by: Matt Evans <matt@ozlabs.org> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Move initial mfspr LPCR out of __init_LPCRMichael Neuling1-1/+5
We want to change what's initially set in the LPCR, so start by taking the move from LPCR out of the function and into the caller. Signed-off-by: Matt Evans <matt@ozlabs.org> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Add relocation on exception vector handlersMichael Neuling3-10/+177
POWER8/v2.07 allows exceptions to be taken with the MMU still on. A new set of exception vectors is added at 0xc000_0000_0000_4xxx. When the HW takes us here, MSR IR/DR will be set already and we no longer need a costly RFID to turn the MMU back on again. The original 0x0 based exception vectors remain for when the HW can't leave the MMU on. Examples of this are when we can't trust the current MMU mappings, like when we are changing from guest to hypervisor (HV 0 -> 1) or when the MMU was off already. In these cases the HW will take us to the original 0x0 based exception vectors with the MMU off as before. This uses the new macros added previously too implement these new execption vectors at 0xc000_0000_0000_4xxx. We exit these exception vectors using mflr/blr (rather than mtspr SSR0/RFID), since we don't need the costly MMU switch anymore. This moves the __end_interrupts marker down past these new 0x4000 vectors since they will need to be copied down to 0x0 when the kernel is not at 0x0. Signed-off-by: Matt Evans <matt@ozlabs.org> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Add new macros needed for relocation on exceptionsMichael Neuling2-0/+115
POWER8/v2.07 allows exceptions to be taken with the MMU still on. A new set of exception vectors is added at 0xc000_0000_0000_4xxx. When the HW takes us here, MSR IR/DR will be set already and we no longer need a costly RFID to turn the MMU back on again. The original 0x0 based exception vectors remain for when the HW can't leave the MMU on. Examples of this are when we can't trust the current the MMU mappings, like when we are changing from guest to hypervisor (HV 0 -> 1) or when the MMU was off already. In these cases the HW will take us to the original 0x0 based exception vectors with the MMU off as before. The below macros are copies of the macros used at the 0x0 offset but modified to handle the MMU being on. In these macros we use the link register to jump to the secondary handlers rather than using RFID (RFID was also use to turn on the MMU). Signed-off-by: Matt Evans <matt@ozlabs.org> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Turn syscall handler into macrosMichael Neuling1-23/+40
This turns the syscall handler into macros as we are going to want to reuse them again later. Signed-off-by: Matt Evans <matt@ozlabs.org> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Make load_hander handle upto 64k offsetMichael Neuling3-3/+9
If we change load_hander() to use an ori instead of addi, we can load handlers upto 64k away provided we are still 64k aligned. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Remove unessessary 0x3000 location enforcementMichael Neuling1-1/+3
This removes the large gap between 0x1800 and 0x3000. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Whitespace changes in exception64s.SMichael Neuling1-15/+15
Remove redundancy spaces and make tab usage consistent. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15Merge branch 'dt' into nextBenjamin Herrenschmidt25-292/+267
2012-11-15powerpc: Fix CONFIG_RELOCATABLE=y CONFIG_CRASH_DUMP=n buildAnton Blanchard1-1/+1
If we build a kernel with CONFIG_RELOCATABLE=y CONFIG_CRASH_DUMP=n, the kernel fails when we run at a non zero offset. It turns out we were incorrectly wrapping some of the relocatable kernel code with CONFIG_CRASH_DUMP. Signed-off-by: Anton Blanchard <anton@samba.org> Cc: <stable@kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Add POWER8 architected mode to cputableMichael Neuling1-0/+15
A PVR of 0x0F000004 means we are arch v2.07 complicate ie, POWER8. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc/pseries: Update ibm,architecture.vec for PAPR 2.7/POWER8Michael Neuling1-3/+8
Update ibm,architecture.vec for POWER8 and allows us to support more than one parition per core. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Change free_bootmem() to kfree()JoonSoo Kim1-5/+3
commit ea96025a('Don't use alloc_bootmem() in init_IRQ() path') changed alloc_bootmem() to kzalloc(), but missed to change free_bootmem() to kfree(). So correct it. Signed-off-by: Joonsoo Kim <js1304@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc/ptrace: Enable hardware breakpoint upon re-registeringAravinda Prasad1-0/+4
On powerpc, ptrace will disable hardware breakpoint request once the breakpoint is hit. It is the responsibility of the caller to set it again. However, when the caller sets the hardware breakpoint again using ptrace(PTRACE_SET_DEBUGREG, child_pid, 0, addr), the hardware breakpoint is not enabled. While gdb's approach is to unregister and re-register the hardware breakpoint every time the breakpoint is hit - which is working fine, this could affect other programs trying to re-register hardware breakpoint without unregistering. This patch enables hardware breakpoint if the caller is re-registering. Signed-off-by: Aravinda Prasad <aravinda@linux.vnet.ibm.com> Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Use asm-generic/bitops/le.hAkinobu Mita1-54/+1
The only difference between powerpc and asm-generic le-bitops is test_bit_le(). Usually all bitops require a long aligned bitmap. But powerpc test_bit_le() can take an unaligned address. There is no special callsite of test_bit_le() that needs unaligned access in powerpc as far as I can see. So convert to use asm-generic/bitops/le.h for powerpc. 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>
2012-11-15powerpc: Remove BITOP_MASK and BITOP_WORD from asm/bitops.hAkinobu Mita1-11/+9
Replace BITOP_MASK and BITOP_WORD with BIT_MASK and BIT_WORD defined in linux/bitops.h and remove BITOP_* which are not used anymore. 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>
2012-11-15powerpc/iommu: Use bitmap libraryAkinobu Mita1-11/+5
- Caluculate the bitmap size with BITS_TO_LONGS() - Use bitmap_empty() to verify that all bits are cleared This also includes a printk to pr_warn() conversion. 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>
2012-11-15powerpc/perf: Use uapi/unistd.h to fix build errorSukadev Bhattiprolu1-1/+1
Use the 'unistd.h' from arch/powerpc/include/uapi to build the perf tool. Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Fix typos in Freescale copyright claimsYang Li24-24/+24
There are many cases that Semiconductor is misspelled. The patch fix these typos. Signed-off-by: Li Yang <leoli@freescale.com> Acked-by: Timur Tabi <timur@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Remove stale function prototypes from setup.hAnton Blanchard1-4/+0
I noticed a couple of function prototypes for functions that no longer exist. Remove them. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Move most of setup.h out of uapiAnton Blanchard2-31/+33
Most of setup.h should not be exported to userspace, so move it back. All we are left with is the asm-generic include to pick up the COMMAND_LINE_SIZE define. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Fix denorm symbol nameMichael Neuling1-1/+1
Fix global symbol name to match actual denorm_exception_hv label. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: POWER8 cputable entryMichael Neuling4-2/+33
Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Add POWER8 setup codeMichael Neuling2-0/+26
Just a copy of POWER7 for now. Will update with new code later. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: make POWER7 setup code name genericMichael Neuling2-1/+1
We are going to reuse this in POWER8 so make the name generic. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc/perf: Add missing L2 constraint handling in Power7 PMUMichael Ellerman1-3/+14
If we have two cache events that require different settings of the L2SEL bits in MMCR1 then we can not schedule those events simultaneously. Add logic to the constraint handling to express that. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc/powermac/cpufreq_32: Set non-infinite transition time for 7447A driverAndreas Schwab1-1/+4
The transition time for the 7447A is around 8ms which makes it possible to use the ondemand governor. This has been tested on the iBook G4 (PowerBook6,7). Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Tested-by: Michel Dänzer <michel@daenzer.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc/ptrace: Remove unused addr parameter in ppc_del_hwdebug()Michael Neuling1-2/+2
Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc/ptrace: Fix spelling mistakeMichael Neuling1-2/+2
s/intruction/instruction/ Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc/hw-breakpoint: Use generic hw-breakpoint interfaces for new PPC ↵K.Prasad2-4/+90
ptrace flags PPC_PTRACE_GETHWDBGINFO, PPC_PTRACE_SETHWDEBUG and PPC_PTRACE_DELHWDEBUG are PowerPC specific ptrace flags that use the watchpoint register. While they are targeted primarily towards BookE users, user-space applications such as GDB have started using them for BookS too. This patch enables the use of generic hardware breakpoint interfaces for these new flags. Apart from the usual benefits of using generic hw-breakpoint interfaces, these changes allow debuggers (such as GDB) to use a common set of ptrace flags for their watchpoint needs and allow more precise breakpoint specification (length of the variable can be specified). Mikey added: rebased and added dbginfo.features around #ifdef CONFIG_HAVE_HW_BREAKPOINT Signed-off-by: K.Prasad <prasad@linux.vnet.ibm.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-11-15powerpc: Remove no longer used ppc_md.idle_loop()Michael Ellerman2-6/+0
The last user of ppc_md.idle_loop() was removed when we dropped the legacy iSeries code, in commit 8ee3e0d. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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