linux.git/arch/xtensa/include/asm/cacheflush.h, branch v5.6

docs: Fix some broken references

2018-06-15T21:10:01+00:00

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 
Acked-by: Masami Hiramatsu 
Acked-by: Stephen Boyd 
Acked-by: Charles Keepax 
Acked-by: Mathieu Poirier 
Reviewed-by: Coly Li 
Signed-off-by: Mauro Carvalho Chehab 
Acked-by: Jonathan Corbet

xtensa: support DMA to high memory

2015-11-08T22:25:37+00:00

- don't bugcheck if high memory page is passed to xtensa_map_page;
- turn empty dcache flush macros into functions so that they could be
  passed as function parameters;
- use kmap_atomic to map high memory pages for cache invalidation/
  flushing performed by xtensa_sync_single_for_{cpu,device}.

Signed-off-by: Max Filippov

Revert "xtensa: cache inquiry and unaligned cache handling functions"

2015-11-03T15:37:45+00:00

Drop unaligned dcache management functions as they are no longer used.
This reverts commit bd974240c9a7 ("xtensa: cache inquiry and
unaligned cache handling functions").

Signed-off-by: Max Filippov

xtensa: nommu: don't build most of the cache flushing code

2014-10-21T09:28:50+00:00

Most cache flushing code is only relevant for MMU. Don't build it for
nommu configuration.

Signed-off-by: Max Filippov

xtensa: nommu: provide __invalidate_dcache_page_alias stub

2014-10-21T09:28:45+00:00

Signed-off-by: Max Filippov

xtensa: implement clear_user_highpage and copy_user_highpage

2014-08-14T07:59:20+00:00

Existing clear_user_page and copy_user_page cannot be used with highmem
because they calculate physical page address from its virtual address
and do it incorrectly in case of high memory page mapped with
kmap_atomic. Also kmap is not needed, as most likely userspace mapping
color would be different from the kmapped color.

Provide clear_user_highpage and copy_user_highpage functions that
determine if temporary mapping is needed for the pages. Move most of the
logic of the former clear_user_page and copy_user_page to
xtensa/mm/cache.c only leaving temporary mapping setup, invalidation and
clearing/copying in the xtensa/mm/misc.S. Rename these functions to
clear_page_alias and copy_page_alias.

Signed-off-by: Max Filippov

xtensa: add SMP support

2014-01-14T18:19:58+00:00

This is largely based on SMP code from the xtensa-2.6.29-smp tree by
Piet Delaney, Marc Gauthier, Joe Taylor, Christian Zankel (and possibly
other Tensilica folks).

Signed-off-by: Max Filippov 
Signed-off-by: Chris Zankel

xtensa: clean up files to make them code-style compliant

2012-12-19T05:10:25+00:00

Remove heading and trailing spaces, trim trailing lines, and wrap lines
that are longer than 80 characters.

Signed-off-by: Chris Zankel

xtensa: reorganize SR referencing

2012-10-16T04:48:08+00:00

- reference SRs by names where possible, not by numbers;
- get rid of __stringify around SR names where possible;
- remove unneeded SR names from asm/regs.h;
- add SREG_ prefix to remaining SR names;

Signed-off-by: Max Filippov 
Signed-off-by: Chris Zankel

xtensa: Fix FLUSH_DCACHE macro for some variants.

2010-05-02T05:55:21+00:00

Define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE also for processor configurations
that don't have cache-aliasing.

Signed-off-by: Chris Zankel