Vaidyanathan Srinivasan b3d627a5f2 cpufreq: powernv: cpufreq driver for powernv platform ... Backend driver to dynamically set voltage and frequency on IBM POWER non-virtualized platforms. Power management SPRs are used to set the required PState. This driver works in conjunction with cpufreq governors like 'ondemand' to provide a demand based frequency and voltage setting on IBM POWER non-virtualized platforms. PState table is obtained from OPAL v3 firmware through device tree. powernv_cpufreq back-end driver would parse the relevant device-tree nodes and initialise the cpufreq subsystem on powernv platform. The code was originally written by svaidy@linux.vnet.ibm.com. Over time it was modified to accomodate bug-fixes as well as updates to the the cpu-freq core. Relevant portions of the change logs corresponding to those modifications are noted below: * The policy->cpus needs to be populated in a hotplug-invariant manner instead of using cpu_sibling_mask() which varies with cpu-hotplug. This is because the cpufreq core code copies this content into policy->related_cpus mask which should not vary on cpu-hotplug. [Authored by srivatsa.bhat@linux.vnet.ibm.com] * Create a helper routine that can return the cpu-frequency for the corresponding pstate_id. Also, cache the values of the pstate_max, pstate_min and pstate_nominal and nr_pstates in a static structure so that they can be reused in the future to perform any validations. [Authored by ego@linux.vnet.ibm.com] * Create a driver attribute named cpuinfo_nominal_freq which creates a sysfs read-only file named cpuinfo_nominal_freq. Export the frequency corresponding to the nominal_pstate through this interface. Nominal frequency is the highest non-turbo frequency for the platform. This is generally used for setting governor policies from user space for optimal energy efficiency. [Authored by ego@linux.vnet.ibm.com] * Implement a powernv_cpufreq_get(unsigned int cpu) method which will return the current operating frequency. Export this via the sysfs interface cpuinfo_cur_freq by setting powernv_cpufreq_driver.get to powernv_cpufreq_get(). [Authored by ego@linux.vnet.ibm.com] [Change log updated by ego@linux.vnet.ibm.com] Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com> Signed-off-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2014-04-07 14:35:27 +02:00
..
8xx_immap.h
agp.h
archrandom.h	powerpc: Implement arch_get_random_long/int() for powernv	2013-10-11 16:50:19 +11:00
asm-compat.h	powerpc: Fix little endian lppaca, slb_shadow and dtl_entry	2013-08-14 15:33:35 +10:00
asm-offsets.h
async_tx.h
atomic.h
backlight.h
barrier.h	arch: Introduce smp_load_acquire(), smp_store_release()	2014-01-12 10:37:17 +01:00
bitops.h	powerpc/book3s: Flush SLB/TLBs if we get SLB/TLB machine check errors on power7.	2013-12-05 16:04:39 +11:00
bootx.h
btext.h	powerpc/pmac: Early debug output on screen on 64-bit macs	2013-08-14 14:57:40 +10:00
bug.h
bugs.h
cache.h	powerpc: purge all the prefetched instructions for the coherent icache flush	2013-12-02 14:13:47 +11:00
cacheflush.h	powerpc: Remove the symbol __flush_icache_range	2013-08-14 14:56:44 +10:00
cell-pmu.h
cell-regs.h
checksum.h	powerpc: Use generic checksum code in little endian	2013-10-11 16:48:39 +11:00
cmpxchg.h	powerpc: Add support for the optimised lockref implementation	2014-01-28 14:45:43 +11:00
code-patching.h	powerpc: Move the patch_exception to a common place	2013-12-02 14:06:54 +11:00
compat.h	powerpc/compat: 32-bit little endian machine name is ppcle, not ppc	2014-03-24 10:16:04 +11:00
context_tracking.h
cpm1.h
cpm2.h
cpm.h
cputable.h	powerpc: Add a cpu feature CPU_FTR_PMAO_BUG	2014-03-24 09:48:24 +11:00
cputhreads.h
cputime.h
current.h
dbdma.h
dbell.h
dcr-generic.h
dcr-mmio.h
dcr-native.h
dcr-regs.h
dcr.h
debug.h
delay.h
device.h	powerpc: Add iommu domain pointer to device archdata	2013-08-14 11:38:34 +02:00
disassemble.h	KVM: PPC: E500: exit to user space on "ehpriv 1" instruction	2013-10-17 14:49:39 +02:00
div64.h
dma-mapping.h	powerpc/powernv: Add iommu DMA bypass support for IODA2	2014-02-11 16:07:37 +11:00
dma.h
edac.h
eeh_event.h
eeh.h	powerpc/eeh: Cleanup on eeh_subsystem_enabled	2014-02-17 11:19:39 +11:00
ehv_pic.h
elf.h	powerpc: Set eflags correctly for ELF ABIv2 core dumps.	2013-11-21 09:19:18 +11:00
emergency-restart.h
emulated_ops.h	powerpc: Fix PPC_EMULATED_STATS build break with sync patch	2013-10-28 22:08:55 -05:00
epapr_hcalls.h	kvm/powerpc: move kvm_hypercall0() and friends to epapr_hypercall0()	2014-01-09 10:14:57 +01:00
exception-64e.h	powerpc/booke64: Use SPRG_TLB_EXFRAME on bolted handlers	2014-03-19 19:57:15 -05:00
exception-64s.h	powerpc/book3s: Fix CFAR clobbering issue in machine check handler.	2014-03-24 10:16:09 +11:00
exec.h
fadump.h
fb.h
feature-fixups.h
firmware.h
fixmap.h	powerpc: use generic fixmap.h	2014-01-23 16:36:54 -08:00
floppy.h
fs_pd.h
fsl_85xx_cache_sram.h
fsl_gtm.h
fsl_guts.h
fsl_hcalls.h
fsl_lbc.h	powerpc/85xx: handle the eLBC error interrupt if it exists in dts	2014-01-10 17:19:27 -06:00
fsl_pamu_stash.h	iommu/fsl: Add additional iommu attributes required by the PAMU driver.	2013-08-14 11:38:34 +02:00
ftrace.h
futex.h
gpio.h
grackle.h
hardirq.h	powerpc: Make irq_stat.timers_irqs counting more specific	2013-12-02 14:14:50 +11:00
heathrow.h
highmem.h
hugetlb.h	powerpc/mm: Add new "set" flag argument to pte/pmd update function	2014-02-17 11:19:35 +11:00
hvcall.h	powerpc: Add hvcalls for 24x7 and gpci (Get Performance Counter Info)	2014-03-24 09:48:28 +11:00
hvconsole.h
hvcserver.h
hvsi.h	powerpc/hvsi: Fix endian issues in HVSI driver	2013-10-11 16:48:53 +11:00
hw_breakpoint.h
hw_irq.h	powerpc: Access local paca after hard irq disabled	2013-07-24 14:18:44 +10:00
hydra.h
i8259.h
ibmebus.h
ide.h
immap_cpm2.h
immap_qe.h
io_event_irq.h
io-defs.h
io-workarounds.h
io.h	powerpc: Add real mode cache inhibited IO accessors	2013-12-05 16:08:21 +11:00
iommu.h	powerpc/powernv: Add iommu DMA bypass support for IODA2	2014-02-11 16:07:37 +11:00
ipic.h
irq_regs.h
irq.h	powerpc/irq: Run softirqs off the top of the irq stack	2013-09-25 14:15:36 +10:00
irqflags.h	powerpc/ppc64: Rename SOFT_DISABLE_INTS with RECONCILE_IRQ_STATE	2013-08-14 14:57:47 +10:00
jump_label.h	compiler/gcc4: Add quirk for 'asm goto' miscompilation bug	2013-10-11 07:39:14 +02:00
Kbuild	locking/mcs: Allow architecture specific asm files to be used for contended case	2014-02-09 21:18:52 +01:00
kdebug.h
kdump.h
kexec.h
keylargo.h
kgdb.h
kmap_types.h
kprobes.h
kvm_44x.h
kvm_asm.h	Second batch of KVM updates. Some minor x86 fixes,	2014-01-31 08:37:32 -08:00
kvm_book3s_32.h	KVM: PPC: Book3S PR: Allocate kvm_vcpu structs from kvm_vcpu_cache	2013-10-17 14:45:05 +02:00
kvm_book3s_64.h	kvm: powerpc: book3s: Add a new config variable CONFIG_KVM_BOOK3S_HV_POSSIBLE	2013-10-17 15:18:28 +02:00
kvm_book3s_asm.h	Merge branch 'kvm-ppc-next' of git://github.com/agraf/linux-2.6 into kvm-queue	2014-01-29 18:29:01 +01:00
kvm_book3s.h	Merge branch 'kvm-ppc-next' of git://github.com/agraf/linux-2.6 into kvm-queue	2014-01-29 18:29:01 +01:00
kvm_booke_hv_asm.h	powerpc/booke64: Use SPRG_TLB_EXFRAME on bolted handlers	2014-03-19 19:57:15 -05:00
kvm_booke.h	KVM: PPC: Book3S: MMIO emulation support for little endian guests	2014-01-27 16:00:39 +01:00
kvm_fpu.h
kvm_host.h	KVM: PPC: Book3S HV: Add new state for transactional memory	2014-01-27 16:01:20 +01:00
kvm_para.h	kvm/powerpc: move kvm_hypercall0() and friends to epapr_hypercall0()	2014-01-09 10:14:57 +01:00
kvm_ppc.h	kvm/ppc: IRQ disabling cleanup	2014-01-27 16:00:55 +01:00
libata-portmap.h
linkage.h
local64.h
local.h
lppaca.h	powerpc: Make slb_shadow a local	2013-12-09 11:40:25 +11:00
lv1call.h
machdep.h	powerpc/pseries: Use remove_memory() to remove memory	2014-03-07 15:53:13 +11:00
macio.h
mc146818rtc.h
mce.h	powerpc/book3s: Recover from MC in sapphire on SCOM read via MMIO.	2014-03-07 15:52:10 +11:00
mediabay.h
mman.h
mmu_context.h
mmu-8xx.h
mmu-40x.h
mmu-44x.h
mmu-book3e.h	powerpc/e6500: Make TLB lock recursive	2014-03-19 19:57:13 -05:00
mmu-hash32.h
mmu-hash64.h	powerpc: Book 3S MMU little endian support	2013-10-11 16:48:26 +11:00
mmu.h	powerpc/e6500: TLB miss handler with hardware tablewalk support	2014-01-09 17:52:19 -06:00
mmzone.h
module.h	powerpc/modules: Module CRC relocation fix causes perf issues	2013-07-24 14:18:43 +10:00
mpc5xxx.h
mpc6xx.h
mpc8xx.h
mpc52xx_psc.h
mpc52xx.h
mpc85xx.h	powerpc/85xx: Add support for 85xx cpu type detection	2013-08-23 19:01:03 -05:00
mpc5121.h	powerpc/512x: clk: support MPC5121/5123/5125 SoC variants	2014-01-12 18:59:36 +01:00
mpc8260.h
mpic_msgr.h
mpic_timer.h
mpic.h	powerpc/msi: Fix compile error on mpc83xx	2013-08-07 18:38:04 -05:00
msi_bitmap.h
mutex.h
nvram.h
ohare.h
opal.h	Merge branch 'powernv-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2014-04-02 13:47:29 -07:00
oprofile_impl.h
paca.h	powerpc/booke64: Critical and machine check exception support	2014-03-19 19:57:27 -05:00
page_32.h
page_64.h
page.h	powerpc: Fix 64K page size support for PPC44x	2013-10-30 16:00:51 +11:00
parport.h
pasemi_dma.h
pci-bridge.h	powerpc/pci: Don't use bitfield for force_32bit_msi	2013-08-14 11:50:25 +10:00
pci.h	PCI: use weak functions for MSI arch-specific functions	2013-08-12 15:26:39 +00:00
percpu.h
perf_event_fsl_emb.h	powerpc/perf: increase the perf HW events to 6	2013-08-07 18:38:03 -05:00
perf_event_server.h	powerpc/perf: Define perf_event_print_debug() to print PMU register values	2014-03-24 09:48:23 +11:00
perf_event.h
pgalloc-32.h	powerpc: Fix PTE page address mismatch in pgtable ctor/dtor	2013-12-10 11:25:05 +11:00
pgalloc-64.h	powerpc: Fix PTE page address mismatch in pgtable ctor/dtor	2013-12-10 11:25:05 +11:00
pgalloc.h
pgtable-ppc32.h
pgtable-ppc64-4k.h
pgtable-ppc64-64k.h
pgtable-ppc64.h	powerpc/mm: Add new "set" flag argument to pte/pmd update function	2014-02-17 11:19:35 +11:00
pgtable.h	mm: Use ptep/pmdp_set_numa() for updating _PAGE_NUMA bit	2014-02-17 11:19:36 +11:00
plpar_wrappers.h	pseries: Add H_SET_MODE to change exception endianness	2013-11-21 09:19:16 +11:00
pmac_feature.h
pmac_low_i2c.h
pmac_pfunc.h
pmc.h
pmi.h
ppc4xx_ocm.h
ppc4xx.h
ppc_asm.h	Merge remote-tracking branch 'scott/next' into next	2014-01-15 14:22:35 +11:00
ppc-opcode.h	powerpc/bpf: Fix DIVWU instruction opcode	2013-10-31 16:19:20 +11:00
ppc-pci.h
probes.h
processor.h	powerpc/powernv: Add context management for Fast Sleep	2014-03-05 15:56:31 +11:00
prom.h	DeviceTree updates for 3.13. This is a bit larger pull request than	2013-11-12 16:52:17 +09:00
ps3.h	powerpc: Delete non-required instances of include <linux/init.h>	2014-01-15 13:46:44 +11:00
ps3av.h
ps3gpu.h
ps3stor.h
pte-8xx.h
pte-40x.h
pte-44x.h
pte-book3e.h	powerpc: book3e: _PAGE_LENDIAN must be _PAGE_ENDIAN	2013-10-17 14:49:37 +02:00
pte-common.h
pte-fsl-booke.h
pte-hash32.h
pte-hash64-4k.h
pte-hash64-64k.h
pte-hash64.h	powerpc/mm: Enable _PAGE_NUMA for book3s	2013-12-09 11:40:30 +11:00
ptrace.h	powerpc: Increase stack redzone for 64-bit userspace to 512 bytes	2014-02-28 18:06:26 +11:00
qe_ic.h
qe.h
reg_8xx.h
reg_a2.h
reg_booke.h	powerpc/fsl: add E6500 PVR and SPRN_PWRMGTCR0 define	2014-01-07 19:29:23 -06:00
reg_fsl_emb.h	powerpc/perf: Add e6500 PMU driver	2013-08-07 18:38:04 -05:00
reg.h	cpufreq: powernv: cpufreq driver for powernv platform	2014-04-07 14:35:27 +02:00
rheap.h
rio.h
rtas.h	powerpc/pseries: Update dynamic cache nodes for suspend/resume operation	2014-03-07 15:54:49 +11:00
rtc.h
runlatch.h
scatterlist.h
scom.h	powerpc/scom: Enable 64-bit addresses	2013-11-06 14:13:49 +11:00
sections.h	powerpc: Fix kdump hang issue on p8 with relocation on exception enabled.	2014-02-11 11:24:47 +11:00
serial.h
setjmp.h
setup.h	powerpc: Clean up panic_timeout usage	2013-11-26 12:12:28 +01:00
sfp-machine.h	powerpc: Put FP/VSX and VR state into structures	2013-10-11 17:26:49 +11:00
shmparam.h
signal.h
smp.h	powerpc: Implement tick broadcast IPI as a fixed IPI message	2014-03-05 15:55:04 +11:00
smu.h
sparsemem.h
spinlock_types.h
spinlock.h	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2014-01-27 21:11:26 -08:00
spu_csa.h
spu_info.h
spu_priv1.h
spu.h	switch elf_coredump_extra_notes_write() to dump_emit()	2013-11-09 00:16:24 -05:00
sstep.h
string.h	powerpc: Use generic memcpy code in little endian	2013-10-11 16:48:40 +11:00
swab.h
swiotlb.h
switch_to.h	Merge branch 'kvm-ppc-next' of git://github.com/agraf/linux-2.6 into kvm-queue	2014-01-29 18:29:01 +01:00
synch.h
syscall.h
syscalls.h
systbl.h	powerpc: Wire up sched_setattr and sched_getattr syscalls	2014-01-29 17:13:05 +11:00
tce.h
termios.h
thread_info.h	powerpc: Don't corrupt transactional state when using FP/VMX in kernel	2014-01-15 13:59:11 +11:00
time.h	powerpc: Implement tick broadcast IPI as a fixed IPI message	2014-03-05 15:55:04 +11:00
timex.h	powerpc/8xx: mfspr SPRN_TBRx in lieu of mftb/mftbu is not supported	2013-11-22 16:56:48 -06:00
tlb.h
tlbflush.h
tm.h	powerpc: Don't corrupt transactional state when using FP/VMX in kernel	2014-01-15 13:59:11 +11:00
topology.h	sched: Remove unused mc_capable() and smt_capable()	2014-03-11 12:05:45 +01:00
trace.h
tsi108_irq.h
tsi108_pci.h
tsi108.h
types.h
uaccess.h
ucc_fast.h
ucc_slow.h
ucc.h
udbg.h	powerpc: Cleanup udbg_16550 and add support for LPC PIO-only UARTs	2013-08-14 14:58:15 +10:00
uic.h
unaligned.h	powerpc: Make unaligned accesses endian-safe for powerpc	2013-12-30 14:02:29 +11:00
uninorth.h
unistd.h	powerpc: Wire up sched_setattr and sched_getattr syscalls	2014-01-29 17:13:05 +11:00
uprobes.h	uprobes/powerpc: Kill arch_uprobe->ainsn	2013-11-20 16:31:01 +01:00
user.h
vdso_datapage.h
vdso.h	powerpc: Link VDSOs at 0x0	2014-02-17 11:19:37 +11:00
vga.h
vio.h	powerpc: Delete non-required instances of include <linux/init.h>	2014-01-15 13:46:44 +11:00
word-at-a-time.h	powerpc: word-at-a-time optimization for 64-bit Little Endian	2013-10-31 16:19:16 +11:00
wsp.h
xics.h
xilinx_intc.h
xilinx_pci.h
xmon.h
xor.h	powerpc: Add VMX optimised xor for RAID5	2013-10-30 16:02:28 +11:00