linux-stable.git/include/linux/mlx5/device.h, branch linux-3.19.y

IB/mlx5: Add mlx5_ib_update_mtt to update page tables after creation

2014-12-16T02:19:02+00:00

The new function allows updating the page tables of a memory region
after it was created. This can be used to handle page faults and page
invalidations.

Since mlx5_ib_update_mtt will need to work from within page invalidation,
so it must not block on memory allocation. It employs an atomic memory
allocation mechanism that is used as a fallback when kmalloc(GFP_ATOMIC) fails.

In order to reuse code from mlx5_ib_populate_pas, the patch splits
this function and add the needed parameters.

Signed-off-by: Haggai Eran 
Signed-off-by: Shachar Raindel 
Signed-off-by: Roland Dreier

IB/mlx5: Changes in memory region creation to support on-demand paging

2014-12-16T02:19:02+00:00

This patch wraps together several changes needed for on-demand paging support
in the mlx5_ib_populate_pas function, and when registering memory regions.

* Instead of accepting a UMR bit telling the function to enable all
  access flags, the function now accepts the access flags themselves.
* For on-demand paging memory regions, fill the memory tables from the
  correct list, and enable/disable the access flags per-page according
  to whether the page is present.
* A new bit is set to enable writing of access flags when using the
  firmware create_mkey command.
* Disable contig pages when on-demand paging is enabled.

In addition the patch changes the UMR code to use PTR_ALIGN instead of
our own macro.

Signed-off-by: Haggai Eran 
Signed-off-by: Roland Dreier

mlx5_core: Add support for page faults events and low level handling

2014-12-16T02:18:59+00:00

* Add a handler function pointer in the mlx5_core_qp struct for page
  fault events. Handle page fault events by calling the handler
  function, if not NULL.
* Add on-demand paging capability query command.
* Export command for resuming QPs after page faults.
* Add various constants related to paging support.

Signed-off-by: Sagi Grimberg 
Signed-off-by: Shachar Raindel 
Signed-off-by: Haggai Eran 
Signed-off-by: Roland Dreier

mlx5_core: Re-add MLX5_DEV_CAP_FLAG_ON_DMND_PG flag

2014-12-16T02:18:58+00:00

In commit 0c7aac854f52 ("net/mlx5_core: Remove unused dev cap enum
fields"), the flag MLX5_DEV_CAP_FLAG_ON_DMND_PG was removed.
Unfortunately the on-demand paging changes actually use it, so re-add
the missing flag.

Signed-off-by: Roland Dreier

IB/mlx5: Enhance UMR support to allow partial page table update

2014-12-16T02:13:35+00:00

The current UMR interface doesn't allow partial updates to a memory
region's page tables. This patch changes the interface to allow that.

It also changes the way the UMR operation validates the memory
region's state.  When set, IB_SEND_UMR_FAIL_IF_FREE will cause the UMR
operation to fail if the MKEY is in the free state. When it is
unchecked the operation will check that it isn't in the free state.

Signed-off-by: Haggai Eran 
Signed-off-by: Shachar Raindel 
Signed-off-by: Roland Dreier

net/mlx5_core: Remove unused dev cap enum fields

2014-12-09T01:45:54+00:00

These enumerations are not used so remove them.

Signed-off-by: Eli Cohen 
Signed-off-by: David S. Miller

net/mlx5_core: use set/get macros in device caps

2014-10-03T22:42:32+00:00

Transform device capabilities related commands to use set/get macros to
manipulate command mailboxes.

Signed-off-by: Eli Cohen 
Signed-off-by: David S. Miller

net/mlx5_core: Use hardware registers description header file

2014-10-03T22:42:31+00:00

Add an auto generated header file that describes hardware registers along with
set of macros that set/get values. The macros do static checks to avoid
overflow, handle endianess, and overall provide a clean way to code commands.
Currently the header file is small and we will add structs as we make use of
the macros.
A few commands were removed from the commands enum since they are not supported
currently and will be added when support is available.

Signed-off-by: Eli Cohen 
Signed-off-by: David S. Miller

net/mlx5_core: Update device capabilities handling

2014-10-03T22:42:31+00:00

Rearrange struct mlx5_caps so it has a "gen" field to represent the current
capabilities configured for the device. Max capabilities can also be queried
from the device. Also update capabilities struct to contain more fields as per
the latest revision if firmware specification.

Signed-off-by: Eli Cohen 
Signed-off-by: David S. Miller

mlx5: minor fixes (mainly avoidance of hidden casts)

2014-07-30T21:00:06+00:00

There were many places where parameters which should be u8/u16 were
integer type.

Additionally, in 2 places, a check for a non-null pointer was added
before dereferencing the pointer (this is actually a bug fix).

Signed-off-by: Jack Morgenstein 
Signed-off-by: Eli Cohen 
Signed-off-by: David S. Miller