linux-dev/drivers/misc/habanalabs/common/context.c, branch linus/master

habanalabs: remove hdev from hl_ctx_get args

2022-05-22T19:01:21Z

This argument is unused by the function. Signed-off-by: Ohad Sharabi Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Greg Kroah-Hartman

habanalabs: keep control device alive during hard reset

2021-12-26T06:59:09Z

Need to allow user retrieve data during reset and afterwards without the need to reopen the device. Did it by seperating the user peocesses list into two lists: 1. fpriv_list which contains list of user processes that opened the device (currently only one). 2. fpriv_ctrl_list which contains list of user processes that opened the control device. This processes in this list shall not be killed during reset, only when the device is suddenly removed from PCI chain. Signed-off-by: Dani Liberman Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: remove compute context pointer

2021-12-26T06:59:08Z

It was an error to save the compute context's pointer in the device structure, as it allowed its use without proper ref-cnt. Change the variable to a flag that only indicates whether there is an active compute context. Code that needs the pointer will now be forced to use proper internal APIs to get the pointer. Signed-off-by: Oded Gabbay

habanalabs: add helper to get compute context

2021-12-26T06:59:08Z

There are multiple places where the code needs to get the context's pointer and increment its ref cnt. This is the proper way instead of using the compute context pointer in the device structure. Signed-off-by: Oded Gabbay

habanalabs: fix etr asid configuration

2021-12-26T06:59:08Z

Pass the user's context pointer into the etr configuration function to extract its ASID. Using the compute_ctx pointer is an error as it is just an indication of whether a user has opened the compute device. Signed-off-by: Oded Gabbay

habanalabs: save ctx inside encaps signal

2021-12-26T06:59:08Z

Compute context pointer in hdev shouldn't be used for fetching the context's pointer. If an object needs the context's pointer, it should get it while incrementing its kref, and when the object is released, put it. Signed-off-by: Oded Gabbay

habanalabs: remove redundant check on ctx_fini

2021-12-26T06:59:08Z

The driver supports only a single context. Therefore, no need to check if the user context that is closed is the compute context. The user context, if exists, is always the compute context. Signed-off-by: Oded Gabbay

habanalabs: context cleanup cosmetics

2021-10-18T09:05:48Z

No need to check the return value if the following action is the same for both cases. In addition, now that hl_ctx_free() doesn't print if the context is not released, its name can be misleading as the context might stay alive after it is executed with no indication for that. Hence we can discard it and simply put the refcount. Signed-off-by: Omer Shpigelman Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: remove redundant warning message

2021-08-29T06:47:48Z

This warning is redundant as we will print a notice in case the device is still in use after the FD was closed. No need to print the same message per context. Signed-off-by: Oded Gabbay

habanalabs: add support for encapsulated signals submission

2021-08-29T06:47:48Z

This commit is the second part of the encapsulated signals feature. It contains the driver support for submission of cs with encapsulated signals and the wait for them. Signed-off-by: farah kassabri Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay