kernel/linux.git/drivers/net/ipa/gsi_private.h, branch v7.1.6

net: ipa: add some needed struct declarations

2024-04-18T11:01:05+00:00

Declare some structure types in a few header files where functions declared therein use them: - Functions are declared in "gsi_private.h" that use gsi, gsi_ring, and gsi_trans structure pointers. - A gsi_trans struct pointer is passed to two functions declared in "ipa_endpoint.h" - In "ipa_interrupt.h", a platform_device pointer is passed in the declaration for ipa_interrupt_init(). Signed-off-by: Alex Elder Signed-off-by: Paolo Abeni

net: ipa: update copyrights

2022-10-03T23:49:20+00:00

Some source files state copyright dates that are earlier than the last modification of the file. Change the copyright year to 2022 in all such cases. Signed-off-by: Alex Elder Link: https://lore.kernel.org/r/20220930224549.3503434-1-elder@linaro.org Signed-off-by: Jakub Kicinski

net: ipa: update comments

2022-10-03T23:49:05+00:00

This patch just updates comments throughout the IPA code. Transaction state is now tracked using indexes into an array rather than linked lists, and a few comments refer to the "old way" of doing things. The description of how transactions are used was changed to refer to "operations" rather than "commands", to (hopefully) remove a possible ambiguity. IPA register offsets and fields are now handled differently as well, and the register documentation is updated to better describe the code. A few minor updates to comments were made (e.g., adding a missing word, fixing a typo or punctuation, etc.). Finally, the local macro atomic_dec_not_zero() is no longer used, so it is deleted. Signed-off-by: Alex Elder Link: https://lore.kernel.org/r/20220930224527.3503404-1-elder@linaro.org Signed-off-by: Jakub Kicinski

net: ipa: don't have gsi_channel_update() return a value

2022-09-09T10:45:25+00:00

If it finds no completed transactions, gsi_channel_trans_complete() calls gsi_channel_update() to check hardware. If new transactions have completed, gsi_channel_update() records that, then calls gsi_channel_trans_complete() to return the first of those found. This recursion won't go any further, but can be avoided if we have gsi_channel_update() only be responsible for updating state after accessing hardware. Change gsi_channel_update() so it simply checks for and handles new completions, without returning a value. If it needs to call that function, have gsi_channel_trans_complete() determine whether there are new transactions available after the update. Signed-off-by: Alex Elder Signed-off-by: David S. Miller

net: ipa: update channel in gsi_channel_trans_complete()

2022-09-09T10:45:25+00:00

Have gsi_channel_trans_complete() update the known state from hardware rather than doing so in gsi_channel_poll_one(). Signed-off-by: Alex Elder Signed-off-by: David S. Miller

net: ipa: always use transaction IDs instead of lists

2022-09-09T10:45:25+00:00

In gsi_channel_trans_complete(), use the completed and pending IDs to determine whether there are any transactions in completed state. Similarly, in gsi_channel_trans_cancel_pending(), use the pending and committed IDs to mark pending transactions cancelled. Rearrange the logic a bit there for a simpler result. This removes the only user of list_last_entry_or_null(), so get rid of that macro. Remove the temporary warnings added by the previous commit. Signed-off-by: Alex Elder Signed-off-by: David S. Miller

net: ipa: rework last transaction determination

2022-09-05T11:47:01+00:00

When quiescing a channel, we find the "last" transaction, which is the latest one to have been allocated. (New transaction allocation will have been prevented by the time this is called.) Currently we do this by looking for the first non-empty transaction list in each state, then return the last entry from that last. Instead, determine the last entry in each list (if any) and return that entry if found. Temporarily (locally) introduce list_last_entry_or_null() as a helper for this, mirroring list_first_entry_or_null(). This macro definition will be removed by an upcoming patch. Remove the temporary warnings added by the previous commit. Signed-off-by: Alex Elder Signed-off-by: David S. Miller

net: ipa: don't assume one channel per event ring

2022-06-17T03:44:03+00:00

In gsi_evt_ring_rx_update(), use gsi_event_trans() repeatedly to find the transaction associated with an event, rather than assuming consecutive events are associated with the same channel. This removes the only caller of gsi_trans_pool_next(), so get rid of it. Signed-off-by: Alex Elder Signed-off-by: Jakub Kicinski

net: ipa: introduce gsi_trans_tx_committed()

2022-06-15T08:07:58+00:00

Create a new function that encapsulates recording information needed for TX channel statistics when a transaction is committed. Record the accumulated length in the transaction before the call (for both RX and TX), so it can be used when updating TX statistics. Signed-off-by: Alex Elder Signed-off-by: David S. Miller

net: ipa: derive channel from transaction

2022-06-13T11:01:58+00:00

In gsi_channel_tx_queued(), we report when a transaction gets passed to hardware. Change that function so it takes transaction rather than a channel as its argument, and derive the channel from the transaction. Rename the function accordingly. Delete the header comments above the function definition; the ones above the declaration in "gsi_private.h" should suffice. In addition, the comments above gsi_channel_tx_update() do a fine job of explaining what's going on. Signed-off-by: Alex Elder Signed-off-by: David S. Miller