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Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Browse source 
Pull powerpc updates from Ben Herrenschmidt:
 "This is the powerpc new goodies for 3.17.  The short story:

  The biggest bit is Michael removing all of pre-POWER4 processor
  support from the 64-bit kernel.  POWER3 and rs64.  This gets rid of a
  ton of old cruft that has been bitrotting in a long while.  It was
  broken for quite a few versions already and nobody noticed.  Nobody
  uses those machines anymore.  While at it, he cleaned up a bunch of
  old dusty cabinets, getting rid of a skeletton or two.

  Then, we have some base VFIO support for KVM, which allows assigning
  of PCI devices to KVM guests, support for large 64-bit BARs on
  "powernv" platforms, support for HMI (Hardware Management Interrupts)
  on those same platforms, some sparse-vmemmap improvements (for memory
  hotplug),

  There is the usual batch of Freescale embedded updates (summary in the
  merge commit) and fixes here or there, I think that's it for the
  highlights"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (102 commits)
  powerpc/eeh: Export eeh_iommu_group_to_pe()
  powerpc/eeh: Add missing #ifdef CONFIG_IOMMU_API
  powerpc: Reduce scariness of interrupt frames in stack traces
  powerpc: start loop at section start of start in vmemmap_populated()
  powerpc: implement vmemmap_free()
  powerpc: implement vmemmap_remove_mapping() for BOOK3S
  powerpc: implement vmemmap_list_free()
  powerpc: Fail remap_4k_pfn() if PFN doesn't fit inside PTE
  powerpc/book3s: Fix endianess issue for HMI handling on napping cpus.
  powerpc/book3s: handle HMIs for cpus in nap mode.
  powerpc/powernv: Invoke opal call to handle hmi.
  powerpc/book3s: Add basic infrastructure to handle HMI in Linux.
  powerpc/iommu: Fix comments with it_page_shift
  powerpc/powernv: Handle compound PE in config accessors
  powerpc/powernv: Handle compound PE for EEH
  powerpc/powernv: Handle compound PE
  powerpc/powernv: Split ioda_eeh_get_state()
  powerpc/powernv: Allow to freeze PE
  powerpc/powernv: Enable M64 aperatus for PHB3
  powerpc/eeh: Aux PE data for error log
  ...
This commit is contained in:
Linus Torvalds 2014-08-07 08:50:34 -07:00
commit f536b3cae8
161 changed files with 5477 additions and 3284 deletions
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18
drivers/cpufreq/powernv-cpufreq.c
View file

@ -28,6 +28,7 @@
#include <linux/of.h>
#include <asm/cputhreads.h>
#include <asm/firmware.h>
#include <asm/reg.h>
#include <asm/smp.h> /* Required for cpu_sibling_mask() in UP configs */
@ -98,7 +99,11 @@ static int init_powernv_pstates(void)
return -ENODEV;
}
WARN_ON(len_ids != len_freqs);
if (len_ids != len_freqs) {
pr_warn("Entries in ibm,pstate-ids and "
"ibm,pstate-frequencies-mhz does not match\n");
}
nr_pstates = min(len_ids, len_freqs) / sizeof(u32);
if (!nr_pstates) {
pr_warn("No PStates found\n");
@ -131,7 +136,12 @@ static unsigned int pstate_id_to_freq(int pstate_id)
int i;
i = powernv_pstate_info.max - pstate_id;
BUG_ON(i >= powernv_pstate_info.nr_pstates || i < 0);
if (i >= powernv_pstate_info.nr_pstates || i < 0) {
pr_warn("PState id %d outside of PState table, "
"reporting nominal id %d instead\n",
pstate_id, powernv_pstate_info.nominal);
i = powernv_pstate_info.max - powernv_pstate_info.nominal;
}
return powernv_freqs[i].frequency;
}
@ -321,6 +331,10 @@ static int __init powernv_cpufreq_init(void)
{
int rc = 0;
/* Don't probe on pseries (guest) platforms */
if (!firmware_has_feature(FW_FEATURE_OPALv3))
return -ENODEV;
/* Discover pstates from device tree and init */
rc = init_powernv_pstates();
if (rc) {