The parameter file_page_offset is a constant shared by all drivers. Just
replace it with the constant itself.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Acked-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Most TTM drivers define the constant DRM_FILE_PAGE_OFFSET of the same
value. The only exception is vboxvideo, which is being converted to the
new offset by this patch. Unifying the constants in a single place
simplifies the driver code.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Acked-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Most of these are just cases where code comments used contractions
(it's, who's) where they actually mean to use a possessive pronoun (its,
whose) or vice-versa.
Signed-off-by: NMatt Roper <matthew.d.roper@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190202012326.20096-1-matthew.d.roper@intel.com

Both functions are obsolete and all calls have been replaced by
ttm_bo_get and ttm_bo_put.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NHuang Rui <ray.huang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

allow driver do somethings when lru changed.
v2:
address Michel's comments.
Signed-off-by: NChunming Zhou <david1.zhou@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Let's support simultaneous submissions to multiple engines.

v2: rename the field to num_shared and fix up all users
v3: rebased
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Reviewed-by: NJunwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: NHuang Rui <ray.huang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

The content of drm_global.{c,h} is obsolete.

v2: rebase on dropping TTM functionality
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NJunwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Make sure that the global BO state is always correctly initialized.

This allows removing all the device code to initialize it.

v2: fix up vbox (Alex)
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NJunwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

As the name says we only need one global instance of ttm_bo_global.

Just use a single exported instance which is save to initialize multiple times.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NJunwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This way it can protect the whole BO global state.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NJunwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

As the name says we only need one global instance of ttm_mem_global.

Drop all the driver initialization and just use a single exported
instance which is initialized during BO global initialization.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NJunwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

So far, struct ttm_bo_global_ref was the only way of initializing a struct
ttm_bo_global. Providing separate initializer and release functions for
struct ttm_bo_global gives drivers the option of implementing their own
init and release callbacks for drm_global_references of type
DRM_GLOBAL_TTM_BO.

The original functions for initializing and releasing via struct
ttm_bo_global_ref are wrappers around the new interfaces.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

The functions ttm_bo_global_init() and ttm_bo_global_release() do not
receive an argument of type struct ttm_bo_global. Both take a struct
drm_global_reference that contains points to a struct ttm_bo_global_ref.
Renaming them reflects this.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Export ttm_bo_get_unless_zero() to be used when looking up buffer
objects that are removed from the lookup structure in the destructor.
Signed-off-by: NThomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: NSinclair Yeh <syeh@vmware.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>

No other driver is using this functionality so move it out of TTM and
into the vmwgfx driver. Update includes and remove exports.
Also annotate to remove false static analyzer lock balance warnings.
Signed-off-by: NThomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>

This function allow us to bulk move a group of BOs to the tail of their LRU.
The positions of group of BOs are stored on the (first, last) bulk_move_pos
structure.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NHuang Rui <ray.huang@amd.com>
Tested-by: NMike Lothian <mike@fireburn.co.uk>
Tested-by: NDieter Nützel <Dieter@nuetzel-hh.de>
Acked-by: NChunming Zhou <david1.zhou@amd.com>
Reviewed-by: NJunwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

When move a BO to the end of LRU, it need remember the BO positions.
Make sure all moved bo in between "first" and "last". And they will be bulk
moving together.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NHuang Rui <ray.huang@amd.com>
Tested-by: NMike Lothian <mike@fireburn.co.uk>
Tested-by: NDieter Nützel <Dieter@nuetzel-hh.de>
Acked-by: NChunming Zhou <david1.zhou@amd.com>
Reviewed-by: NJunwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Add bulk move pos to store the pointer of first and last buffer object.
The list in between will be bulk moved on lru list.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NHuang Rui <ray.huang@amd.com>
Tested-by: NMike Lothian <mike@fireburn.co.uk>
Tested-by: NDieter Nützel <Dieter@nuetzel-hh.de>
Acked-by: NChunming Zhou <david1.zhou@amd.com>
Reviewed-by: NJunwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

These two helpers will be used on set page caching.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NHuang Rui <ray.huang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This patch moves all non-x86 abstraction to the ttm_set_memory header.
It is to make function calling more clearly.

(v2): add ttm_ prefix.
Suggested-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NHuang Rui <ray.huang@amd.com>
Reviewed-by: NBas Nieuwenhuizen <basni@chromium.org>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

The TTM buffer-object interface provides ttm_bo_reference() and
ttm_bo_unref() for managing reference counts. Replacing them with
ttm_bo_get() and ttm_bo_put() aligns the API with conventions used
throughout the Linux kernel.

The implementation of ttm_bo_unref() clears the supplied pointer
to NULL. This leads to workarounds where the caller saves the
pointer's value before de-referencing the BO. ttm_bo_put() does
not clear the supplied pointer.
Signed-off-by: NThomas Zimmermann <contact@tzimmermann.org>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

It will be used by vmwgfx cpu blit.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NBrian Paul <brianp@vmware.com>
Signed-off-by: NThomas Hellstrom <thellstrom@vmware.com>

Instead of calculating the size in bytes just to recalculate the number
of pages from it pass the BO directly to the function.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NRoger He <Hongbo.He@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Allows us to gut a BO of it's backing store when the driver says that it
isn't needed any more.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Acked-by: NRoger He <Hongbo.He@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This allows drivers to only allocate dma addresses, but not a page
array.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NRoger He <Hongbo.He@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Let's stop mangling everything in a single header and create one header
per object instead.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NRoger He <Hongbo.He@amd.com>
Acked-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Rename ttm_bo_add_ttm to ttm_tt_create and move it into ttm_tt.c.

v2: separate the cleanup.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Reviewed-by: NRoger He <Hongbo.He@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

the free mem space and the lower limit both include two parts:
system memory and swap space.

For the OOM triggered by TTM, that is the case as below:
first swap space is full of swapped out pages and soon
system memory also is filled up with ttm pages. and then
any memory allocation request will run into OOM.

to cover two cases:
a. if no swap disk at all or free swap space is under swap mem
   limit but available system mem is bigger than sys mem limit,
   allow TTM allocation;

b. if the available system mem is less than sys mem limit but
   free swap space is bigger than swap mem limit, allow TTM
   allocation.

v2: merge two memory limit(swap and system) into one
v3: keep original behavior except ttm_opt_ctx->flags with
    TTM_OPT_FLAG_FORCE_ALLOC
v4: always set force_alloc as tx->flags & TTM_OPT_FLAG_FORCE_ALLOC
v5: add an attribute for lower_mem_limit
v6: set lower_mem_limit as 0 to keep original behavior
Signed-off-by: NRoger He <Hongbo.He@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Never used as parameter, the only driver actually using this is nouveau
and there it is initialized after the BO is initialized.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Only used by the AGP backend and there it can be easily accessed using
ttm->bdev->glob.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

The pointer is available as ttm->bdev->glob as well.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

The pointer is available as bo->bdev->glob as well.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

set TTM_OPT_FLAG_FORCE_ALLOC when we are servicing for page
fault routine.

for ttm_mem_global_reserve if in page fault routine, allow the gtt
pages reservation always. because page fault routing already grabbed
system memory and the allowance of this exception is harmless.
Otherwise, it will trigger OOM killer.

will be used later.

v2: set the FORCE_ALLOC always
v3: minor refine
Signed-off-by: NRoger He <Hongbo.He@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

for saving memory and more bit flag can be used in future
Signed-off-by: NRoger He <Hongbo.He@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Stop calling the driver callback directly.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NRoger He <Hongbo.He@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This to allow drivers to choose to avoid OOM invocation and handle
page allocation failures instead.

v2:
Remove extra new lines.
Signed-off-by: NAndrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NRoger He <Hongbo.He@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

No one will use this function except ttm_bo_io_mem_pfn() now, so move
the calculation of ttm_bo_default_io_mem_pfn() into ttm_bo_io_mem_pfn()
and do some cleanup.
Signed-off-by: NTan Xiaojun <tanxiaojun@huawei.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

if the bo shares same reservation object then not lock it again
at swapout time to make it possible to swap out.

v2: refine the commmit message
Reviewed-by: NThomas Hellström <thellstrom@vmware.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NChuming Zhou <david1.zhou@amd.com>
Signed-off-by: NRoger He <Hongbo.He@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

forward the operation context to ttm_tt_bind as well,
and the ultimate goal is swapout enablement for reserved BOs.

v2: use common term rather than amd specific
Reviewed-by: NThomas Hellström <thellstrom@vmware.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NChuming Zhou <david1.zhou@amd.com>
Signed-off-by: NRoger He <Hongbo.He@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

forward the operation context to ttm_tt_populate as well,
and the ultimate goal is swapout enablement for reserved BOs.

v2: squash in fix for vboxvideo
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NRoger He <Hongbo.He@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>