linux.git/drivers/gpu/drm/amd, branch v3.19-rc2

amdkfd: init aperture once per process

2014-11-18T11:56:23+00:00

Since the user space may call open() more that once from the same process,
the aperture initialization should be moved from kfd_open()

Signed-off-by: Alexey Skidanov 
Reviewed-by: Oded Gabbay 
Signed-off-by: Oded Gabbay

amdkfd: Display MEC fw version in topology node

2014-11-09T10:46:56+00:00

This patch displays the firmware version of the microcode that is currently
running in the MEC.
This is needed for the HSA RT, so it could differentiate its behavior based on
fw version. e.g. workarounds for bugs in fw

v2: Send the KGD_ENGINE_MEC1 as a parameter to the get_fw_version()

Signed-off-by: Oded Gabbay 
Reviewed-by: Alex Deucher

drm/amd: Add get_fw_version to kfd-->kgd interface

2014-11-09T10:42:22+00:00

This patch adds a new interface to the kfd-->kgd interface.
The new interface function retrieves the firmware version that is currently in
use by the MEC engine. The firmware was uploaded to the MEC engine by the kgd
(radeon).

v2: Added parameter of engine type to interface function

Signed-off-by: Oded Gabbay 
Reviewed-by: Alex Deucher

amdkfd: Disable support for 32-bit user processes

2014-12-05T20:01:35+00:00

This patch checks if the process that opens the /dev/kfd device is 32-bit
process. If so, it returns -EPERM and prints a warning message in dmesg.

This is done to prevent 32-bit user processes from using amdkfd, and hence, HSA
features.

AMD's HSA userspace stack will also support only 64-bit processes on Linux.

Reviewed-by: Alexey Skidanov 
Signed-off-by: Oded Gabbay

amdkfd: Set *buffer_ptr to NULL in case of error

2014-12-04T12:09:02+00:00

In function acquire_packet_buffer() we may return -ENOMEM. In that case, we
should set the *buffer_ptr to NULL, so that calling functions which check the
*buffer_ptr value as a criteria for success, will know that
acquire_packet_buffer() failed.

Reviewed-by: Alexey Skidanov 
Signed-off-by: Oded Gabbay

amdkfd: use atomic allocations within srcu callbacks

2014-12-03T15:19:36+00:00

srcu callbacks are running in atomic context, we can't allocate using
__GFP_WAIT.

Signed-off-by: Sasha Levin 
Signed-off-by: Oded Gabbay

amdkfd: use sizeof(long) granularity for the pasid bitmask

2014-12-03T14:26:25+00:00

All the bit operations (such as find_first_zero_bit()) read sizeof(long) bytes
at a time. If we allocated less than sizeof(long) bytes for the bitmask we
would be accessing invalid memory when working with the bitmask.

Change the allocator to allocate sizeof(long) multiples for the bitmask.

Signed-off-by: Sasha Levin 
Signed-off-by: Oded Gabbay

amdkfd: delete some dead code

2014-11-25T16:43:29+00:00

This is dead code.  We don't need to unbind here, we can just return
directly.

Reviewed-by: Oded Gabbay 
Signed-off-by: Dan Carpenter 
Signed-off-by: Oded Gabbay

amdkfd: Fix memory leak of mqds on dqm fini

2014-11-25T13:16:38+00:00

The mqds array members are not freed when dqm is uninitialized.

Reviewed-by: Ben Goz 
Signed-off-by: Oded Gabbay

amdkfd: fix an error handling bug in pqm_create_queue()

2014-11-25T10:24:51+00:00

The call to kernel_queue_uninit(NULL) will trigger a BUG(), and also the
error code is incorrect.

Fixes: 45102048f77e ('amdkfd: Add process queue manager module')
Reviewed-by: Oded Gabbay 
Signed-off-by: Dan Carpenter 
Signed-off-by: Oded Gabbay