Commit Graph

12 Commits

Author SHA1 Message Date
Ben Goz a82918f18a drm/amdkfd: make reset wavefronts per process per device
This commit moves the reset wavefront flag to per process per device
data structure, so we can support multiple devices.

Signed-off-by: Ben Goz <ben.goz@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2015-06-06 22:26:39 +03:00
Ben Goz c3447e8150 drm/amdkfd: Enforce kill all waves on process termination
This commit makes sure that on process termination, after
we're destroying all the active queues, we're killing all the
existing wave front of the current process.

By doing this we're making sure that if any of the CUs were blocked
by infinite loop we're enforcing it to end the shader explicitly.

Signed-off-by: Ben Goz <ben.goz@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2015-06-03 11:34:47 +03:00
Andrew Lewycky f3a398183f drm/amdkfd: Add the events module
This patch adds the events module (kfd_events.c) and the interrupt
handle module for Kaveri (cik_event_interrupt.c).

The patch updates the interrupt_is_wanted(), so that it now calls the
interrupt isr function specific for the device that received the
interrupt. That function(implemented in cik_event_interrupt.c)
returns whether this interrupt is of interest to us or not.

The patch also updates the interrupt_wq(), so that it now calls the
device's specific wq function, which checks the interrupt source
and tries to signal relevant events.

v2:

Increase limit of signal events to 4096 per process
Remove bitfields from struct cik_ih_ring_entry
Rename radeon_kfd_event_mmap to kfd_event_mmap
Add debug prints to allocate_free_slot and allocate_signal_page
Make allocate_event_notification_slot return a correct value
Add warning prints to create_signal_event
Remove error print from IOCTL path
Reformatted debug prints in kfd_event_mmap
Map correct size (as received from mmap) in kfd_event_mmap

v3:

Reduce limit of signal events back to 256 per process
Fix allocation of kernel memory for signal events

Signed-off-by: Andrew Lewycky <Andrew.Lewycky@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2015-05-19 13:02:26 +03:00
Firo Yang 1549fcd15c drm/amdkfd: Remove unessary void pointer cast
kmalloc() returns a void pointer - no need to cast it in
drivers/gpu/drm/amd/amdkfd/kfd_process.c::kfd_process_destroy_delayed()

Signed-off-by: Firo Yang <firogm@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
2015-05-19 12:13:38 +03:00
Oded Gabbay 94a1ee0923 drm/amdkfd: add debug prints for process teardown
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2015-03-25 14:02:05 +02:00
Alexey Skidanov 093c7d8cfd drm/amdkfd: Process-device data creation and lookup split
This patch splits the current kfd_get_process_device_data() to two
functions, one that specifically creates a pdd and another one which
just do lookup.

This is done to enhance the readability and maintainability of the code.

Signed-off-by: Alexey Skidanov <Alexey.Skidanov@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
2015-01-09 22:25:58 +02:00
Alexey Skidanov dd59239a98 amdkfd: init aperture once per process
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 <Alexey.Skidanov@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
2014-11-18 13:56:23 +02:00
Sasha Levin c448a142a7 amdkfd: use atomic allocations within srcu callbacks
srcu callbacks are running in atomic context, we can't allocate using
__GFP_WAIT.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
2014-12-03 10:19:36 -05:00
Dan Carpenter 9cf4a28131 amdkfd: delete some dead code
This is dead code.  We don't need to unbind here, we can just return
directly.

Reviewed-by: Oded Gabbay <oded.gabbay@amd.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
2014-11-25 19:43:29 +03:00
Ben Goz 45102048f7 amdkfd: Add process queue manager module
The queue scheduler divides into two sections, one section is process bounded
and the other section is device bounded.
The process bounded section is handled by this module. The PQM handles usermode
queue setup, updates and tear-down.

v3:

Used kernel parameter to limit queues per process instead of define
Added use of doorbell address from user

v4:

Modified pqm_create_queue so that only when creating usermode queues the
driver should return the queue properties to the userspace.

Added an info message print when no more queues can be opened because of the
queue per process limitation

v5:

Move amdkfd from drm/radeon/ to drm/amd/
Various fixes

Signed-off-by: Ben Goz <ben.goz@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
2014-07-17 01:04:10 +03:00
Oded Gabbay b17f068a09 amdkfd: Add binding/unbinding calls to amd_iommu driver
This patch adds the functions to bind and unbind pasid
from a device through the amd_iommu driver.

The unbind function is called when the mm_struct of the
process is released.

The bind function is not called here because it is called
only in the IOCTLs which are not yet implemented at this
stage of the patchset.

Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
2014-07-17 00:06:27 +03:00
Oded Gabbay 19f6d2a660 amdkfd: Add basic modules to amdkfd
This patch adds the process module and three helper modules:

- kfd_process, which handles process which open /dev/kfd

- kfd_doorbell, which provides helper functions for doorbell allocation,
  release and mapping to userspace

- kfd_pasid, which provides helper functions for pasid allocation and release

- kfd_aperture, which provides helper functions for managing the LDS, Local GPU
  memory and Scratch memory apertures of the process

This patch only contains the basic kfd_process module, which doesn't contain
the reference to the queue scheduler. This was done to allow easier code review.

Also, this patch doesn't contain the calls to the IOMMU driver for binding the
pasid to the device. Again, this was done to allow easier code review

The kfd_process object is created when a process opens /dev/kfd and is closed
when the mm_struct of that process is teared-down.

v3:

Removed kfd_vidmem.c file
Replaced direct mmput call to mmu_notifier release
Removed typedefs
Moved bool field to end of the structure
Added new kernel params for gart usage limitation
Added initialization of sa manager
Fixed debug messages
Remove support for LDS in 32 bit
Changed code to support mmap of doorbell pages from userspace
Added documentation for apertures

v4: Replaced RCU by SRCU for kfd_process list management

v5:

Move amdkfd from drm/radeon/ to drm/amd/
Rename kfd_aperture.c to kfd_flat_memory.c
Protect against multiple init calls
MQD size is H/W dependent so moved it to device info structure
Rename kfd_mem_obj structure's members
Use delayed function for process tear-down

Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
2014-07-16 23:25:31 +03:00