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Find out unsupported operations in ntrdma #92

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AndrewGavril opened this issue Oct 4, 2023 · 1 comment

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kernel

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AndrewGavril commented Oct 4, 2023

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AndrewGavril added the kernel label

AndrewGavril assigned mirrin00

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mirrin00 commented Oct 5, 2023

NTRDMA use the following functions:

ntb_spad_is_unsafe
ntb_peer_db_set
ntb_peer_db_addr
ntb_db_clear_mask
ntb_db_read
ntb_db_vector_count
ntb_db_valid_mask
ntb_db_is_unsafe
ntb_peer_mw_get_addr
ntb_mw_clear_trans
ntb_mw_set_trans
ntb_mw_get_align
ntb_mw_count
ntb_link_disable
ntb_link_enable
ntb_link_is_up
ntb_peer_port_idx

The following registers are not implemented:

NTGSIGNAL
NTMTBLDATA
IDT_NT_NTINTMSK
IDT_SW_SEGSIGSTS
IDT_NT_REQIDCAP

IDT does not implement following functions:

ntb_spad_is_unsafe
ntb_peer_db_addr
ntb_db_vector_count
ntb_db_is_unsafe
ntb_mw_set_trans

Our idt-ntb-ivshmem does not implement the following critical functions:

ntb_link_disable
ntb_link_enable
ntb_mw_set_trans
Global signal NTGSIGNAL (https://elixir.bootlin.com/linux/v6.5.4/source/drivers/ntb/hw/idt/ntb_hw_idt.c#L753 , https://elixir.bootlin.com/linux/v6.5.4/source/drivers/ntb/hw/idt/ntb_hw_idt.c#L706)

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