kernel/linux.git/drivers/net/ipa/ipa_mem.h, branch v6.6.131

net: ipa: define two new memory regions

2023-02-01T05:45:52+00:00

IPA v5.0 uses two memory regions not previously used. Define them and treat them as valid only for IPA v5.0. Signed-off-by: Alex Elder Reviewed-by: Leon Romanovsky Signed-off-by: Jakub Kicinski

net: ipa: don't index mem data array by ID

2021-06-10T21:50:08+00:00

Finally the code handles the IPA memory region array in the configuration data without assuming it is indexed by region ID. Get rid of the array index designators where these arrays are initialized. As a result, there's no more need to define an explicitly undefined memory region ID, so get rid of that. Change ipa_mem_find() so it no longer assumes the ipa->mem[] array is indexed by memory region ID. Instead, have it search the array for the entry having the requested memory ID, and return the address of the descriptor if found. Otherwise return NULL. Stop allowing memory regions to be defined with zero size and zero canary value. Check for this condition in ipa_mem_valid_one(). As a result, it is not necessary to check for this case in ipa_mem_config(). Finally, there is no need for IPA_MEM_UNDEFINED to be defined any more, so get rid of it. Signed-off-by: Alex Elder Signed-off-by: David S. Miller

net: ipa: introduce ipa_mem_find()

2021-06-10T21:50:08+00:00

Introduce a new function that abstracts finding information about a region in IPA-local memory, given its memory region ID. For now it simply uses the region ID as an index into the IPA memory array. If the region is not defined, ipa_mem_find() returns a null pointer. Update all code that accesses the ipa->mem[] array directly to use ipa_mem_find() instead. The return value must be checked for null when optional memory regions are sought. Signed-off-by: Alex Elder Signed-off-by: David S. Miller

net: ipa: introduce ipa_mem_id_optional()

2021-06-09T22:59:33+00:00

Introduce a new function that indicates whether a given memory region is required for a given version of IPA hardware. Use it to verify that all required regions are present during initialization. Reorder the definitions of the memory region IDs to be based on the version in which they're first defined. Use "+" rather than "and above" where defining the IPA versions in which memory IDs are used, and indicate which regions are optional (many are not). Signed-off-by: Alex Elder Signed-off-by: David S. Miller

net: ipa: store memory region id in descriptor

2021-06-09T22:59:33+00:00

Store the memory region ID in the memory descriptor structure. This is a move toward *not* indexing the array by the ID, but for now we must still specify those index values. Define an explicitly undefined region ID, value 0, so uninitialized entries in the array won't use an otherwise valid ID. Signed-off-by: Alex Elder Signed-off-by: David S. Miller

net: ipa: define IPA_MEM_END_MARKER

2021-06-09T22:59:33+00:00

Define a new pseudo memory region identifer that specifies the offset at the end of IPA resident memory. Use it instead of IPA_MEM_UC_EVENT_RING in places where the size of that region was defined to be 0. The size of the IPA_MEM_END_MARKER pseudo region must be zero. Signed-off-by: Alex Elder Signed-off-by: David S. Miller

net: ipa: add IPA v4.5 configuration data

2021-04-11T23:49:08+00:00

Add support for the SDX55 SoC, which includes IPA version 4.5. Starting with IPA v4.5, a few of the memory regions have a different number of "canary" values; update comments in the where the region identifers are defined to accurately reflect that. I'll note three differences in SDX55 versus the other two existing platforms (SDM845 and SC7180): - SDX55 uses a 32-bit Linux kernel - SDX55 has four interconnects rather than three - SDX55 uses IPA v4.5, which uses inline checksum offload Signed-off-by: Alex Elder Signed-off-by: David S. Miller

net: ipa: get rid of empty IPA functions

2021-04-10T03:57:25+00:00

There are place holder functions in the IPA code that do nothing. For the most part these are inverse functions, for example, once the routing or filter tables are set up there is no need to perform any matching teardown activity at shutdown, or in the case of an error. These can be safely removed, resulting in some code simplification. Add comments in these spots making it explicit that there is no inverse. Signed-off-by: Alex Elder Signed-off-by: Jakub Kicinski

net: ipa: fix all kernel-doc warnings

2021-03-29T01:12:03+00:00

Fix all warnings produced when running: scripts/kernel-doc -none drivers/net/ipa/*.[ch] Signed-off-by: Alex Elder Signed-off-by: David S. Miller

net: ipa: define some new memory regions

2021-03-19T20:35:54+00:00

There are several memory regions that are defined starting with IPA v4.0, but which were not used for the SC7180 SoC (IPA v4.2). Even though they're not used (yet), define them so they are ready to be used for SoCs when they become supported. There are two QUOTA statistics memory regions, one for the modem and one for the AP. Define distinct names for these regions, and get rid of the definition of IPA_MEM_STATS_QUOTA. Signed-off-by: Alex Elder Signed-off-by: David S. Miller