Add infrastructure to support mapping allocations
into iommus.
Change-Id: Ia5eafebee408e297013bf55284abf67d9eb8d78b
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
This change is part of the move from PMEM to ION. ION needs an SMI
voting interface smiliar to PMEM's.
Change-Id: I18888f46198848694fb7e1e0d2671074bf51d7c9
Signed-off-by: Alex Bird <alexbird@codeaurora.org>
Userspace clients pass fds around, not handles. Support flushing
via fd.
Change-Id: Ic22d9327e9fa72cb604c3010a2a6f798be8dfdb1
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
As part of the transition from PMEM to ION, the interface for accessing
SMI memory needs to be accessible from ION as it was from PMEM.
Change-Id: Ia6f9475dc030bbb0dafdcc1b6dbe93c7cdeca268
Signed-off-by: Alex Bird <alexbird@codeaurora.org>
Add err.h for the declaration of ERR_PTR which
is used with the stubbed out ion headers.
Change-Id: Ic5e5aea556723ea6b9c8953ef54ad5a82d3761ec
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Add adsp heaps for ion. This corresponds directly
to what pmem currently does. This also includes disabling
the adsp and pmem heaps for pmem.
Change-Id: I4354c713413ebbe949579741efdd75e9c444c8e7
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Add inline stubs for in-kernel Ion functions to use when
Ion is not enabled in the kernel config.
Change-Id: Ic0dedbadbe4d7bab8f24763e67dd775c769b06df
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Clients may want to know what the existing flags are on a
handle for mapping, cache flushing or other purposes. Add
an API to get those flags.
Change-Id: I2d8c93194d1fc940042529b8851ebecf35d6e3de
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Make sure the header file for Ion gets exported to userspace.
Also make sure userspace can actually use the header.
Change-Id: I44f436005a6a503811c85d4fb0f89264ba160571
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Add explicit support for cached and uncached mappings. Functions
now describe whether mappings will be cached or uncached.
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Add infrastructure for supporting ion carveout heaps.
The memory type should be specified in the board file using
mach/ion.h. The ion platform driver will be responsible for
allocating the correct memory.
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
-- init rb nodes in ion_handle_create
-- in ion_handle_destroy, check that a node belongs to a tree before removing
it (safety check, does not happen right now)
-- mark as static functions used only inside ion.c
-- update comments to ion_share() with a relevant blurb from the implementation
-- other minor updates/typo fixes to comments
Signed-off-by: Iliyan Malchev <malchev@google.com>
