Commit Graph

593 Commits

Author SHA1 Message Date
Linus Torvalds
82abb273d8 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
 - three fixes for 3.15 that didn't make it in time
 - limited Octeon 3 support.
 - paravirtualization support
 - improvment to platform support for Netlogix SOCs.
 - add support for powering down the Malta eval board in software
 - add many instructions to the in-kernel microassembler.
 - add support for the BPF JIT.
 - minor cleanups of the BCM47xx code.
 - large cleanup of math emu code resulting in significant code size
   reduction, better readability of the code and more accurate
   emulation.
 - improvments to the MIPS CPS code.
 - support C3 power status for the R4k count/compare clock device.
 - improvments to the GIO support for older SGI workstations.
 - increase number of supported CPUs to 256; this can be reached on
   certain embedded multithreaded ccNUMA configurations.
 - various small cleanups, updates and fixes

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (173 commits)
  MIPS: IP22/IP28: Improve GIO support
  MIPS: Octeon: Add twsi interrupt initialization for OCTEON 3XXX, 5XXX, 63XX
  DEC: Document the R4k MB ASIC mini interrupt controller
  DEC: Add self as the maintainer
  MIPS: Add microMIPS MSA support.
  MIPS: Replace calls to obsolete strict_strto call with kstrto* equivalents.
  MIPS: Replace obsolete strict_strto call with kstrto
  MIPS: BFP: Simplify code slightly.
  MIPS: Call find_vma with the mmap_sem held
  MIPS: Fix 'write_msa_##' inline macro.
  MIPS: Fix MSA toolchain support detection.
  mips: Update the email address of Geert Uytterhoeven
  MIPS: Add minimal defconfig for mips_paravirt
  MIPS: Enable build for new system 'paravirt'
  MIPS: paravirt: Add pci controller for virtio
  MIPS: Add code for new system 'paravirt'
  MIPS: Add functions for hypervisor call
  MIPS: OCTEON: Add OCTEON3 to __get_cpu_type
  MIPS: Add function get_ebase_cpunum
  MIPS: Add minimal support for OCTEON3 to c-r4k.c
  ...
2014-06-09 18:10:34 -07:00
Naoya Horiguchi
c177c81e09 hugetlb: restrict hugepage_migration_support() to x86_64
Currently hugepage migration is available for all archs which support
pmd-level hugepage, but testing is done only for x86_64 and there're
bugs for other archs.  So to avoid breaking such archs, this patch
limits the availability strictly to x86_64 until developers of other
archs get interested in enabling this feature.

Simply disabling hugepage migration on non-x86_64 archs is not enough to
fix the reported problem where sys_move_pages() hits the BUG_ON() in
follow_page(FOLL_GET), so let's fix this by checking if hugepage
migration is supported in vma_migratable().

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Miller <davem@davemloft.net>
Cc: <stable@vger.kernel.org>	[3.12+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-04 16:53:51 -07:00
Ralf Baechle
f8647b506d Merge branch '3.15-fixes' into mips-for-linux-next 2014-06-04 22:53:02 +02:00
Linus Torvalds
b05d59dfce At over 200 commits, covering almost all supported architectures, this
was a pretty active cycle for KVM.  Changes include:
 
 - a lot of s390 changes: optimizations, support for migration,
   GDB support and more
 
 - ARM changes are pretty small: support for the PSCI 0.2 hypercall
   interface on both the guest and the host (the latter acked by Catalin)
 
 - initial POWER8 and little-endian host support
 
 - support for running u-boot on embedded POWER targets
 
 - pretty large changes to MIPS too, completing the userspace interface
   and improving the handling of virtualized timer hardware
 
 - for x86, a larger set of changes is scheduled for 3.17.  Still,
   we have a few emulator bugfixes and support for running nested
   fully-virtualized Xen guests (para-virtualized Xen guests have
   always worked).  And some optimizations too.
 
 The only missing architecture here is ia64.  It's not a coincidence
 that support for KVM on ia64 is scheduled for removal in 3.17.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm into next

Pull KVM updates from Paolo Bonzini:
 "At over 200 commits, covering almost all supported architectures, this
  was a pretty active cycle for KVM.  Changes include:

   - a lot of s390 changes: optimizations, support for migration, GDB
     support and more

   - ARM changes are pretty small: support for the PSCI 0.2 hypercall
     interface on both the guest and the host (the latter acked by
     Catalin)

   - initial POWER8 and little-endian host support

   - support for running u-boot on embedded POWER targets

   - pretty large changes to MIPS too, completing the userspace
     interface and improving the handling of virtualized timer hardware

   - for x86, a larger set of changes is scheduled for 3.17.  Still, we
     have a few emulator bugfixes and support for running nested
     fully-virtualized Xen guests (para-virtualized Xen guests have
     always worked).  And some optimizations too.

  The only missing architecture here is ia64.  It's not a coincidence
  that support for KVM on ia64 is scheduled for removal in 3.17"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (203 commits)
  KVM: add missing cleanup_srcu_struct
  KVM: PPC: Book3S PR: Rework SLB switching code
  KVM: PPC: Book3S PR: Use SLB entry 0
  KVM: PPC: Book3S HV: Fix machine check delivery to guest
  KVM: PPC: Book3S HV: Work around POWER8 performance monitor bugs
  KVM: PPC: Book3S HV: Make sure we don't miss dirty pages
  KVM: PPC: Book3S HV: Fix dirty map for hugepages
  KVM: PPC: Book3S HV: Put huge-page HPTEs in rmap chain for base address
  KVM: PPC: Book3S HV: Fix check for running inside guest in global_invalidates()
  KVM: PPC: Book3S: Move KVM_REG_PPC_WORT to an unused register number
  KVM: PPC: Book3S: Add ONE_REG register names that were missed
  KVM: PPC: Add CAP to indicate hcall fixes
  KVM: PPC: MPIC: Reset IRQ source private members
  KVM: PPC: Graciously fail broken LE hypercalls
  PPC: ePAPR: Fix hypercall on LE guest
  KVM: PPC: BOOK3S: Remove open coded make_dsisr in alignment handler
  KVM: PPC: BOOK3S: Always use the saved DAR value
  PPC: KVM: Make NX bit available with magic page
  KVM: PPC: Disable NX for old magic page using guests
  KVM: PPC: BOOK3S: HV: Add mixed page-size support for guest
  ...
2014-06-04 08:47:12 -07:00
Davidlohr Bueso
f7a89f1b8e MIPS: Call find_vma with the mmap_sem held
Performing vma lookups without taking the mm->mmap_sem is asking
for trouble. While doing the search, the vma in question can be
modified or even removed before returning to the caller. Take the
lock (exclusively) in order to avoid races while iterating through
the vmacache and/or rbtree.

Updates two functions:
  - process_fpemu_return()
  - cteon_flush_cache_sigtramp()

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Tested-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: akpm@linux-foundation.org
Cc: zeus@gnu.org
Cc: aswin@hp.com
Cc: davidlohr@hp.com
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
Patchwork: http://patchwork.linux-mips.org/patch/6811/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-06-03 22:19:09 +02:00
David Daney
18280edafe MIPS: Add code for new system 'paravirt'
For para-virtualized guests running under KVM or other equivalent
hypervisor.

Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7004/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-06-02 12:34:20 +02:00
David Daney
18a8cd63c0 MIPS: Add minimal support for OCTEON3 to c-r4k.c
These are needed to boot a generic mips64r2 kernel on OCTEONIII.

Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7003/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-30 21:01:10 +02:00
David Daney
35d0470668 MIPS: Don't build fast TLB refill handler with 32-bit kernels
The fast handler only supports 64-bit kernels.

Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7010/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-30 21:01:10 +02:00
Markos Chandras
8248881835 MIPS: uasm: Add lb uasm instruction
It will be used later on by bpf-jit

[ralf@linux-mips.org: Resolved conflict.]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
2014-05-30 16:10:19 +02:00
Markos Chandras
16d21a812f MIPS: uasm: Add mflo uasm instruction
It will be used later on by bpf-jit

[ralf@linux-mips.org: Resolved conflict.]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
2014-05-30 15:57:44 +02:00
Markos Chandras
a8e897ad00 MIPS: uasm: Add mul uasm instruction
It will be used later on by bpf-jit

[ralf@linux-mips.org: Resolved conflict.]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/6736/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-30 15:54:39 +02:00
Markos Chandras
d6b3314b49 MIPS: uasm: Add lh uam instruction
It will be used later on by bpf-jit

[ralf@linux-mips.org: Resolved conflict.]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/6733/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-30 15:54:38 +02:00
Markos Chandras
ab9e4fa092 MIPS: uasm: Add wsbh uasm instruction
It will be used later on by bpf-jit

[ralf@linux-mips.org: Resolved conflict.]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/6732/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-30 15:54:38 +02:00
Markos Chandras
e8ef868b47 MIPS: uasm: Add sltu uasm instruction
It will be used later on by bpf-jit

[ralf@linux-mips.org: Resolved conflict.]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/6731/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-30 15:54:38 +02:00
Markos Chandras
390363ed77 MIPS: uasm: Add sltiu uasm instruction
It will be used later on by bpf-jit

[ralf@linux-mips.org: Resolved conflict.]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/6730/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-30 15:54:38 +02:00
Markos Chandras
7fa22681c4 MIPS: uasm: Add jalr uasm instruction
It will be used later on by bpf-jit

[ralf@linux-mips.org: Resolved conflict.]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/6729/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-30 15:54:38 +02:00
Markos Chandras
f3ec7a23b6 MIPS: uasm: Add mfhi uasm instruction
It will be used later on by bpf-jit

[ralf@linux-mips.org: Resolved conflict.]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: http://patchwork.linux-mips.org/patch/6728/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-30 14:54:56 +02:00
Markos Chandras
4c12a854d8 MIPS: uasm: Add divu uasm instruction
It will be used later on by bpf-jit

[ralf@linux-mips.org: Resolved conflict.]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/6727/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-30 14:53:06 +02:00
Markos Chandras
f31318fdf3 MIPS: uasm: Add srlv uasm instruction
It will be used later on by bpf-jit

[ralf@linux-mips.org: Fixed conflict due to other preceeding conflicts.]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/6726/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-30 14:53:05 +02:00
Markos Chandras
bef581ba1c MIPS: uasm: Add sllv uasm instruction
It will be used later on by bpf-jit

[ralf@linux-mips.org: Fixed conflict with
49e9529b9d [MIPS: uasm: add jalr instruction].

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/6725/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-30 14:53:05 +02:00
James Hogan
90f91356c7 MIPS: Export local_flush_icache_range for KVM
Export the local_flush_icache_range function pointer for GPL modules so
that it can be used by KVM for syncing the icache after binary
translation of trapping instructions.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Sanjay Lal <sanjayl@kymasys.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-05-30 12:59:28 +02:00
Markos Chandras
beef8e020d MIPS: uasm: Add u3u2u1 instruction builders
It will be used later on by the sllv and srlv instructions.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/6723/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-30 12:36:03 +02:00
Ralf Baechle
2e2d663d2d Merge branch 'wip-mips-pm' of https://github.com/paulburton/linux into mips-for-linux-next 2014-05-29 15:08:23 +02:00
Paul Burton
d674dd14e8 MIPS: uasm: add MT ASE yield instruction
This patch allows use of the MT ASE yield instruction from uasm. It will
be used by a subsequent patch.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2014-05-28 16:20:28 +01:00
Paul Burton
53ed138986 MIPS: uasm: add wait instruction
This patch allows use of the wait instruction from uasm. It will be used
by a subsequent patch.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2014-05-28 16:20:27 +01:00
Paul Burton
729ff56169 MIPS: uasm: add sync instruction
This patch allows use of the sync instruction from uasm. It will be used
by a subsequent patch.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2014-05-28 16:20:26 +01:00
Paul Burton
49e9529b9d MIPS: uasm: add jalr instruction
This patch allows use of the jalr instruction from uasm. It will be used
by a subsequent patch.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2014-05-28 16:20:26 +01:00
Paul Burton
8dee5901b2 MIPS: uasm: add a label variant of beq
This patch allows for use of the beq instruction with labels from uasm,
much as bne & others already do. It will be used by a subsequent patch.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2014-05-28 16:20:25 +01:00
Paul Burton
e2a9e5ad71 MIPS: add kmap_noncoherent to wire a cached non-coherent TLB entry
This is identical to kmap_coherent apart from the cache coherency
attribute used for the TLB entry, so kmap_coherent is abstracted to
kmap_prot which is then called for both kmap_coherent &
kmap_noncoherent. This will be used by a subsequent patch.

Suggested-by: Leonid Yegoshin <leonid.yegoshin@imgtec.com>
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2014-05-28 16:20:14 +01:00
Thomas Bogendoerfer
f3f0d95146 MIPS: R46000: Fix Micro-assembler field overflow for R4600 V2
Fix uasm warning, which triggered because of workaround for R4600 V2 CPUs.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6716/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-28 11:08:14 +02:00
Ralf Baechle
b633648c5a MIPS: MT: Remove SMTC support
Nobody is maintaining SMTC anymore and there also seems to be no userbase.
Which is a pity - the SMTC technology primarily developed by Kevin D.
Kissell <kevink@paralogos.com> is an ingenious demonstration for the MT
ASE's power and elegance.

Based on Markos Chandras <Markos.Chandras@imgtec.com> patch
https://patchwork.linux-mips.org/patch/6719/ which while very similar did
no longer apply cleanly when I tried to merge it plus some additional
post-SMTC cleanup - SMTC was a feature as tricky to remove as it was to
merge once upon a time.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-24 00:07:01 +02:00
Ralf Baechle
c836732fa0 MIPS: c-r4k: Call R4600_HIT_CACHEOP_WAR_IMPL only for 32 byte cache lines.
R4600_HIT_CACHEOP_WAR_IMPL is only needed on R4600 v1.6 and the R4600 has
data cache lines that are always 32 bytes so the call is pointless in
r4k_blast_dcache_page_dc64.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-23 15:12:38 +02:00
Steven J. Hill
7bb3940940 MIPS: mm: Fix broken microMIPS kernel regression.
Commit f4ae17aa0f [MIPS: mm: Use scratch for
PGD when !CONFIG_MIPS_PGD_C0_CONTEXT] broke microMIPS kernel builds. This
patch refactors that code similar to what was done for the 'clear_page'
and 'copy_page' functions.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6744/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-05-14 18:11:06 +02:00
James Hogan
eaa38d6343 MIPS: tlb-r4k: Add CPU PM callback to reconfigure TLB
Add a CPU power management callback for the r4k TLB which reconfigures
it after the CPU leaves a powered down state.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2014-05-02 16:39:10 +01:00
James Hogan
61d73044fe MIPS: c-r4k: Add CPU PM callback for coherency
Implement a CPU power management callback for the r4k cache, to set up
coherency again after leaving a powered down state.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2014-05-02 16:39:09 +01:00
Kees Cook
8229f1a044 mips: export flush_icache_range
The lkdtm module performs tests against executable memory ranges, so it
needs to flush the icache for proper behaviors.  Other architectures
already export this, so do the same for MIPS.

[akpm@linux-foundation.org: relocate export sites]
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Sanjay Lal <sanjayl@kymasys.com>
Cc: John Crispin <blogic@openwrt.org>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-18 16:40:09 -07:00
Huacai Chen
c579d310b9 MIPS: Loongson: Add basic Loongson-3 CPU support
Basic Loongson-3 CPU support include CPU probing and TLB/cache
initializing.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Hongliang Tao <taohl@lemote.com>
Signed-off-by: Hua Yan <yanh@lemote.com>
Tested-by: Alex Smith <alex.smith@imgtec.com>
Reviewed-by: Alex Smith <alex.smith@imgtec.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/6630
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-03-31 18:17:12 +02:00
Wu Zhangjin
d7b12056bc MIPS: Use current_cpu_type() instead of c->cputype
If current_cpu_type() is pre-defined in cpu-feature-overrides.h, This
may save about 10k for the compressed kernel image(vmlinuz).

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1901/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-03-31 18:17:12 +02:00
Leonid Yegoshin
f36c4720fc MIPS: Add support for the M5150 processor
The M5150 core is a 32-bit MIPS RISC which implements the
MIPS Architecture Release-5  in a 5-stage pipeline.
In addition, it includes the MIPS Architecture Virtualization Module
that enables virtualization of operating systems,
which provides a scalable, trusted, and secure execution environment.

Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6596/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-03-26 23:09:22 +01:00
Manuel Lauss
8005711c8d MIPS: Extend DMA_MAYBE_COHERENT logic to DMA_NONCOHERENT use
Setting DMA_MAYBE_COHERENT gives a platform the opportunity to select
use of cache ops at boot.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/6575/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-03-26 23:09:20 +01:00
Leonid Yegoshin
4676f9359f MIPS: mm: c-r4k: Flush scache to avoid cache aliases
There is a chance for the secondary cache to have memory
aliases. This can happen if the bootloader is in a non-EVA mode
(or even in EVA mode but with different mapping from the kernel)
and the kernel switching to EVA afterwards. It's best to flush
the icache to avoid having the secondary CPUs fetching stale
data from it.

Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
2014-03-26 23:09:19 +01:00
Markos Chandras
80ca69f40f MIPS: mm: c-r4k: Add support for flushing user pages from cache
Use the userspace cache flushing functions if the interrupted
process is a userspace one.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
2014-03-26 23:09:19 +01:00
Leonid Yegoshin
4caa906ee9 MIPS: mm: c-r4k: Build EVA {d,i}cache flushing functions
Build EVA specific cache flushing functions (ie cachee).
They will be used by a subsequent patch.

Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
2014-03-26 23:09:19 +01:00
Markos Chandras
0893d3fb8d MIPS: mm: init: Add free_init_pages() callback for EVA
A core in EVA mode can have any possible segment mapping, so the
default free_initmem_default() function may not always work as expected.
Therefore, add a callback that platforms can use to free up the init section.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
2014-03-26 23:09:18 +01:00
James Hogan
aced4cbd6e MIPS: Add cases for CPU_P5600
Add a CPU_P5600 case to various switch statements, doing the same thing
as for CPU_PROAPTIV.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6408/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-03-26 23:09:11 +01:00
Paul Burton
0ee958e102 MIPS: Coherent Processing System SMP implementation
This patch introduces a new SMP implementation for systems implementing
the MIPS Coherent Processing System architecture. The kernel will make
use of the Coherence Manager, Cluster Power Controller & Global
Interrupt Controller in order to detect, bring up & make use of other
cores in the system. SMTC is not supported, so only a single TC per VPE
in the system is used. That is, this option enables an SMVP style setup
but across multiple cores.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6362/
Patchwork: https://patchwork.linux-mips.org/patch/6611/
Patchwork: https://patchwork.linux-mips.org/patch/6651/
Patchwork: https://patchwork.linux-mips.org/patch/6652/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-03-26 23:00:12 +01:00
Steven J. Hill
442e14a2c5 MIPS: Add 1074K CPU support explicitly.
The 1074K is a multiprocessing coherent processing system (CPS) based
on modified 74K cores. This patch makes the 1074K an actual unique
CPU type, instead of a 74K derivative, which it is not.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Reviewed-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6389/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-03-06 21:25:21 +01:00
Markos Chandras
02dc6bfb08 MIPS: mm: c-r4k: Detect instruction cache aliases
The *Aptiv cores can use the CONF7/IAR bit to detect if the core
has hardware support to remove instruction cache aliasing.

This also defines the CONF7/AR bit in order to avoid using
the '16' magic number.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6499/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-03-06 21:25:21 +01:00
Linus Torvalds
cdfc83075f Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
 "The most notable new addition inside this pull request is the support
  for MIPS's latest and greatest core called "inter/proAptiv".  The
  patch series describes this core as follows.

    "The interAptiv is a power-efficient multi-core microprocessor
     for use in system-on-chip (SoC) applications. The interAptiv combines
     a multi-threading pipeline with a coherence manager to deliver improved
     computational throughput and power efficiency. The interAptiv can
     contain one to four MIPS32R3 interAptiv cores, system level
     coherence manager with L2 cache, optional coherent I/O port,
     and optional floating point unit."

  The platform specific patches touch all 3 Broadcom families.  It adds
  support for the new Broadcom/Netlogix XLP9xx Soc, building a common
  BCM63XX SMP kernel for all BCM63XX SoCs regardless of core type/count
  and full gpio button/led descriptions for BCM47xx.

  The rest of the series are cleanups and bug fixes that are MIPS
  generic and consist largely of changes that Imgtec/MIPS had published
  in their linux-mti-3.10.git stable tree.  Random other cleanups and
  patches preparing code to be merged in 3.15"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (139 commits)
  mips: select ARCH_MIGHT_HAVE_PC_SERIO
  mips: delete non-required instances of include <linux/init.h>
  MIPS: KVM: remove shadow_tlb code
  MIPS: KVM: use common EHINV aware UNIQUE_ENTRYHI
  mips/ide: flush dcache also if icache does not snoop dcache
  MIPS: BCM47XX: fix position of cpu_wait disabling
  MIPS: BCM63XX: select correct MIPS_L1_CACHE_SHIFT value
  MIPS: update MIPS_L1_CACHE_SHIFT based on MIPS_L1_CACHE_SHIFT_<N>
  MIPS: introduce MIPS_L1_CACHE_SHIFT_<N>
  MIPS: ZBOOT: gather string functions into string.c
  arch/mips/pci: don't check resource with devm_ioremap_resource
  arch/mips/lantiq/xway: don't check resource with devm_ioremap_resource
  bcma: gpio: don't cast u32 to unsigned long
  ssb: gpio: add own IRQ domain
  MIPS: BCM47XX: fix sparse warnings in board.c
  MIPS: BCM47XX: add board detection for Linksys WRT54GS V1
  MIPS: BCM47XX: fix detection for some boards
  MIPS: BCM47XX: Enable buttons support on SSB
  MIPS: BCM47XX: Convert WNDR4500 to new syntax
  MIPS: BCM47XX: Use "timer" trigger for status LEDs
  ...
2014-01-30 17:20:32 -08:00
Paul Gortmaker
3b2663ca84 mips: delete non-required instances of include <linux/init.h>
None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>.  Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6320/
2014-01-24 22:39:56 +01:00