microblaze: implement the new page table range API

Rename PFN_SHIFT_OFFSET to PTE_PFN_SHIFT. Change the calling convention
for set_pte() to be the same as other architectures. Add
update_mmu_cache

microblaze: implement the new page table range API

Rename PFN_SHIFT_OFFSET to PTE_PFN_SHIFT. Change the calling convention
for set_pte() to be the same as other architectures. Add
update_mmu_cache_range(), flush_icache_pages() and flush_dcache_folio().

[[email protected]: mark flush_dcache_folio() inline]
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Mike Rapoport (IBM) <[email protected]>
Cc: Michal Simek <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

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microblaze: use asm-generic/cacheflush.h

Microblaze needs almost no cache flushing routines of its own. Rely on
asm-generic/cacheflush.h for the defaults.

Signed-off-by: Christoph Hellwig <hch@lst

microblaze: use asm-generic/cacheflush.h

Microblaze needs almost no cache flushing routines of its own. Rely on
asm-generic/cacheflush.h for the defaults.

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Cc: Michal Simek <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>

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microblaze: Convert headers to SPDX license

Covert all headers to SPDX.

Signed-off-by: Michal Simek <[email protected]>
Reviewed-by: Stefan Asserhall <[email protected]>
Reviewed-by

microblaze: Convert headers to SPDX license

Covert all headers to SPDX.

Signed-off-by: Michal Simek <[email protected]>
Reviewed-by: Stefan Asserhall <[email protected]>
Reviewed-by: Arnd Bergmann <[email protected]>

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docs: Fix some broken references

As we move stuff around, some doc references are broken. Fix some of
them via this script:
./scripts/documentation-file-ref-check --fix

Manually checked if the pro

docs: Fix some broken references

As we move stuff around, some doc references are broken. Fix some of
them via this script:
./scripts/documentation-file-ref-check --fix

Manually checked if the produced result is valid, removing a few
false-positives.

Acked-by: Takashi Iwai <[email protected]>
Acked-by: Masami Hiramatsu <[email protected]>
Acked-by: Stephen Boyd <[email protected]>
Acked-by: Charles Keepax <[email protected]>
Acked-by: Mathieu Poirier <[email protected]>
Reviewed-by: Coly Li <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Acked-by: Jonathan Corbet <[email protected]>

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microblaze: Use static inline functions in cacheflush.h

Using static inline functions ensure proper type checking
which also remove compilation warning for no MMU

Compilation warning:
arch/microbla

microblaze: Use static inline functions in cacheflush.h

Using static inline functions ensure proper type checking
which also remove compilation warning for no MMU

Compilation warning:
arch/microblaze/include/asm/cacheflush.h: warning: 'addr'
may be used uninitialized in this function [-Wmaybe-uninitialized]

Signed-off-by: Michal Simek <[email protected]>

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microblaze: trivial: Add one empty line

Add one empty line to microblaze_ksyms.c.
Remove one empty line to cacheflush.h.

Signed-off-by: Michal Simek <[email protected]>

microblaze: Fix GDB issue caused by cache issue

Used the same solution as SH. Changed len to PAGE_SIZE
in copy_to_user_page macro.

Implement flush_cache_page macro.

Signed-off-by: Michal Simek <mo

microblaze: Fix GDB issue caused by cache issue

Used the same solution as SH. Changed len to PAGE_SIZE
in copy_to_user_page macro.

Implement flush_cache_page macro.

Signed-off-by: Michal Simek <[email protected]>

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microblaze: Fix copy_to_user_page macro

copy_to_user_page macro is used in mm/memory.c:access_process_vm
function. This function is called from ptrace code (POKETEXT, POKEDATA)
which write data to m

microblaze: Fix copy_to_user_page macro

copy_to_user_page macro is used in mm/memory.c:access_process_vm
function. This function is called from ptrace code (POKETEXT, POKEDATA)
which write data to memory. Microblaze handle physical address for
caches that's why there is virt_to_phys conversion.

There is potential one location which can caused the problem on WB system.

The important is take a look at write PTRACEs requests
(POKE/TEXT, DATA, USR).

Note:
Majority of Microblaze PTRACE code is moved to generic location
in newer kernel version that's why this solution should work on
the newest kernel version too.

linux/io.h is in cacheflush because of mm/nommu.c

Tested on a WB system - hello world debugging.

Signed-off-by: Michal Simek <[email protected]>

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microblaze: Implement flush_dcache_page macro

flush_dcache_page macro is necessary to implement for
JFFS2 rootfs support on WB system.

Signed-off-by: Michal Simek <[email protected]>

microblaze: Support for WB cache

Microblaze version 7.20.d is the first MB version which can be run
on MMU linux. Please do not used previous version because they contain
HW bug.
Based on WB support

microblaze: Support for WB cache

Microblaze version 7.20.d is the first MB version which can be run
on MMU linux. Please do not used previous version because they contain
HW bug.
Based on WB support was necessary to redesign whole cache design.
Microblaze versions from 7.20.a don't need to disable IRQ and cache
before working with them that's why there are special structures for it.

Signed-off-by: Michal Simek <[email protected]>

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microblaze: Move cache macro from cache.h to cacheflush.h

Signed-off-by: Michal Simek <[email protected]>

block: add helpers to run flush_dcache_page() against a bio and a request's pages

Mtdblock driver doesn't call flush_dcache_page for pages in request. So,
this causes problems on architectures wher

block: add helpers to run flush_dcache_page() against a bio and a request's pages

Mtdblock driver doesn't call flush_dcache_page for pages in request. So,
this causes problems on architectures where the icache doesn't fill from
the dcache or with dcache aliases. The patch fixes this.

The ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE symbol was introduced to avoid
pointless empty cache-thrashing loops on architectures for which
flush_dcache_page() is a no-op. Every architecture was provided with this
flush pages on architectires where ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE is
equal 1 or do nothing otherwise.

See "fix mtd_blkdevs problem with caches on some architectures" discussion
on LKML for more information.

Signed-off-by: Ilya Loginov <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Peter Horton <[email protected]>
Cc: "Ed L. Cashin" <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>

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microblaze_mmu_v2: Update cacheflush.h

Signed-off-by: Michal Simek <[email protected]>

microblaze_v8: cache support

Reviewed-by: Ingo Molnar <[email protected]>
Acked-by: Stephen Neuendorffer <[email protected]>
Acked-by: John Linn <[email protected]>
Acked-by: John Willi

microblaze_v8: cache support

Reviewed-by: Ingo Molnar <[email protected]>
Acked-by: Stephen Neuendorffer <[email protected]>
Acked-by: John Linn <[email protected]>
Acked-by: John Williams <[email protected]>
Signed-off-by: Michal Simek <[email protected]>

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