kernel/linux.git/drivers/net/ipa/gsi.h, branch v6.12.80

net: ipa: allocate dummy net_device dynamically

2024-04-24T11:00:16+00:00

Embedding net_device into structures prohibits the usage of flexible arrays in the net_device structure. For more details, see the discussion at [1]. Un-embed the net_device from the private struct by converting it into a pointer. Then use the leverage the new alloc_netdev_dummy() helper to allocate and initialize dummy devices. [1] https://lore.kernel.org/all/20240229225910.79e224cf@kernel.org/ Signed-off-by: Breno Leitao Signed-off-by: David S. Miller

net: ipa: sort all includes

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

Establish the rule that header files are always included in sorted (POSIX local) order. Standard and private headers are separated by a blank line. Similarly, sort all forward-declarations for structures. Signed-off-by: Alex Elder Signed-off-by: Paolo Abeni

net: ipa: eliminate unneeded struct declarations

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

As definitions in headers have been moved around, some of the struct and enum declarations found in header files have become no longer necessary and can be removed. Remove these unneeded declarations. Signed-off-by: Alex Elder Signed-off-by: Paolo Abeni

net: ipa: remove unneeded standard includes

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

Some IPA header files include one or more other standard header files despite not directly needing anything defined in the included files. Remove these unnecessary includes. Signed-off-by: Alex Elder Signed-off-by: Paolo Abeni

net: ipa: add IPA v5.0 GSI register definitions

2023-03-23T05:44:00+00:00

Add the definitions of GSI register offsets and fields for IPA v5.0. These are used for the SDX65 SoC. Increase the maximum channel and event ring counts supported by the driver, so those implemented by the SDX65 are supported. Signed-off-by: Alex Elder Signed-off-by: Jakub Kicinski

net: ipa: kill gsi->virt_raw

2023-02-20T07:14:20+00:00

Starting at IPA v4.5, almost all GSI registers had their offsets changed by a fixed amount (shifted downward by 0xd000). Rather than defining offsets for all those registers dependent on version, an adjustment was applied for most register accesses. This was implemented in commit cdeee49f3ef7f ("net: ipa: adjust GSI register addresses"). It was later modified to be a bit more obvious about the adjusment, in commit 571b1e7e58ad3 ("net: ipa: use a separate pointer for adjusted GSI memory"). We now are able to define every GSI register with its own offset, so there's no need to implement this special adjustment. So get rid of the "virt_raw" pointer, and just maintain "virt" as the (non-adjusted) base address of I/O mapped GSI register memory. Redefine the offsets of all GSI registers (other than the INTER_EE ones, which were not subject to the adjustment) for IPA v4.5+, subtracting 0xd000 from their defined offsets instead. Move the ERROR_LOG and ERROR_LOG_CLR definitions further down in the register definition files so all registers are defined in order of their offset. Signed-off-by: Alex Elder Signed-off-by: Paolo Abeni

net: ipa: start creating GSI register definitions

2023-02-13T09:56:16+00:00

Create a new register definition file in the "reg" subdirectory, and begin populating it with GSI register definitions based on IPA version. The GSI registers haven't changed much, so several IPA versions can share the same GSI register definitions. As with IPA registers, an array of pointers indexed by GSI register ID refers to these register definitions, and a new "regs" field in the GSI structure is initialized in gsi_reg_init() to refer to register information based on the IPA version (though for now there's only one). The new function gsi_reg() returns register information for a given GSI register, and the result can be used to look up that register's offset. This patch is meant only to put the infrastructure in place, so only eon register (CH_C_QOS) is defined for each version, and only the offset and stride are defined for that register. Use new function gsi_reg() to look up that register's information to get its offset, This makes the GSI_CH_C_QOS_OFFSET() unnecessary, so get rid of it. Signed-off-by: Alex Elder Signed-off-by: David S. Miller

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: move the definition of gsi_ee_id

2022-09-20T14:45:46+00:00

Move the definition of the gsi_ee_id enumerated type out of "gsi.h" and into "ipa_version.h". That latter header file isolates the definition of the ipa_version enumerated type, allowing it to be included in both IPA and GSI code. We have the same requirement for gsi_ee_id, and moving it here makes it easier to get only that definition without everything else defined in "gsi.h". Signed-off-by: Alex Elder Signed-off-by: Jakub Kicinski

net: ipa: kill all other transaction lists

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

None of the transaction lists are actually needed any more, because transaction IDs (which have been shown to be equivalent) are used instead. So we can remove all of them, as well as the spinlock that protects updates to them. Not requiring a lock simplifies gsi_trans_free() as well; we only need to check the reference count once to decide whether we've hit the last reference. This makes the links field in the gsi_trans structure unused, so get rid of that as well. Signed-off-by: Alex Elder Signed-off-by: David S. Miller