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This patch changes kfd_ioctl() to be very similar to drm_ioctl().
The patch defines an array of amdkfd_ioctls, which maps IOCTL definition to the
ioctl function.
The kfd_ioctl() uses that mapping to call the appropriate ioctl function,
through a function pointer.
This patch also declares a new typedef for the ioctl function pointer.
v2: Renamed KFD_COMMAND_(START|END) to AMDKFD_...
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
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This patch reformats the ioctl definitions in kfd_ioctl.h to be similar to the
drm ioctls definition style.
v2: Renamed KFD_COMMAND_(START|END) to AMDKFD_...
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
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This patch moves the copy_to_user() and copy_from_user() calls from the
different ioctl functions in amdkfd to the general kfd_ioctl() function, as
this is a common code for all ioctls.
This was done according to example taken from drm_ioctl.c
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
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Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
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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>
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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 <alexey.skidanov@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
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There is a typo here so the errors from kfd_bind_process_to_device()
are not detected.
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>
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Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
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Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
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v3: Fixed debug messages
Signed-off-by: Alexey Skidanov <Alexey.Skidanov@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
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Signed-off-by: Evgeny Pinchuk <evgeny.pinchuk@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
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Signed-off-by: Andrew Lewycky <Andrew.Lewycky@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
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v3: Removed the use of internal typedefs, fixed debug prints, added checks
for parameters and moved to using doorbell address from user
v4: Extracted some of the code in the create queue ioctl to a different
function that may be also called from other ioctls in the future.
Also fixed the check of the ring size argument.
v5:
Add support for AQL queues creation to enable working with open-source HSA
runtime
Signed-off-by: Ben Goz <ben.goz@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
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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>
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This patch adds the amdkfd skeleton driver. The driver does nothing except
define a /dev/kfd device.
It returns -ENODEV on all amdkfd IOCTLs.
v3: Move bool field to the end of structure, removed the pmc ioctls and added
a meaningful error message for ioctl error.
v5:
Create a new folder drm/amd and move amdkfd from drm/radeon/ to drm/amd/
Remove scheduler_class from kfd_priv.h as it was never used
Add skeleton implementation of the Get Version IOCTL
v6:
Update module version to the correct number and remove the "default m" from the
Kconfig file
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
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