linux-toradex.git/drivers/net/ipa/ipa_data.h, branch v5.17-rc7 Linux kernel for Apalis and Colibri modules net: ipa: rename ipa_clock_* symbols 2021-08-22T08:44:17+00:00 Alex Elder elder@linaro.org 2021-08-20T16:01:28+00:00 7aa0e8b8bd5b252c94900b19f2af8b7ec8a4e11d Rename a number of functions to clarify that there is no longer a notion of an "IPA clock," but rather that the functions are more generally related to IPA power management. ipa_clock_enable() -> ipa_power_enable() ipa_clock_disable() -> ipa_power_disable() ipa_clock_rate() -> ipa_core_clock_rate() ipa_clock_init() -> ipa_power_init() ipa_clock_exit() -> ipa_power_exit() Rename the ipa_clock structure to be ipa_power. Rename all variables and fields using that structure type "power" rather than "clock". Rename the ipa_clock_data structure to be ipa_power_data, and more broadly, just substitute "power" for "clock" in places that previously represented things related to the "IPA clock". Update comments throughout. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net> 
Rename a number of functions to clarify that there is no longer a
notion of an "IPA clock," but rather that the functions are more
generally related to IPA power management.

  ipa_clock_enable() -> ipa_power_enable()
  ipa_clock_disable() -> ipa_power_disable()
  ipa_clock_rate() -> ipa_core_clock_rate()
  ipa_clock_init() -> ipa_power_init()
  ipa_clock_exit() -> ipa_power_exit()

Rename the ipa_clock structure to be ipa_power.  Rename all
variables and fields using that structure type "power" rather
than "clock".

Rename the ipa_clock_data structure to be ipa_power_data, and more
broadly, just substitute "power" for "clock" in places that
previously represented things related to the "IPA clock".

Update comments throughout.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: ipa: add IPA v3.1 configuration data 2021-06-21T19:31:00+00:00 Alex Elder elder@linaro.org 2021-06-21T17:56:27+00:00 1bb1a117878b925dcb959830cd3384c11ed0dea5 Add support for the MSM8998 SoC, which includes IPA version 3.1. Originally proposed by AngeloGioacchino Del Regno. Link: https://lore.kernel.org/netdev/20210211175015.200772-6-angelogioacchino.delregno@somainline.org Signed-off-by: Alex Elder <elder@linaro.org> Acked-by: AngeloGioacchino Del Regno Signed-off-by: David S. Miller <davem@davemloft.net> 
Add support for the MSM8998 SoC, which includes IPA version 3.1.

Originally proposed by AngeloGioacchino Del Regno.

Link: https://lore.kernel.org/netdev/20210211175015.200772-6-angelogioacchino.delregno@somainline.org
Signed-off-by: Alex Elder <elder@linaro.org>
Acked-by: AngeloGioacchino Del Regno
Signed-off-by: David S. Miller <davem@davemloft.net>
net: ipa: add IPA v4.9 configuration data 2021-04-13T22:02:25+00:00 Alex Elder elder@linaro.org 2021-04-13T16:38:26+00:00 e557dc82418d24a5fb035815dc57131b68239801 Add support for the SM8350 SoC, which includes IPA version 4.9. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net> 
Add support for the SM8350 SoC, which includes IPA version 4.9.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: ipa: add IPA v4.11 configuration data 2021-04-11T23:49:08+00:00 Alex Elder elder@linaro.org 2021-04-09T20:40:24+00:00 927c5043459ec613bad281074293f073599d2906 Add support for the SC7280 SoC, which includes IPA version 4.11. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net> 
Add support for the SC7280 SoC, which includes IPA version 4.11.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: ipa: add IPA v4.5 configuration data 2021-04-11T23:49:08+00:00 Alex Elder elder@linaro.org 2021-04-09T20:40:23+00:00 fbb763e7e7366c27848cbfb09d983802b6322709 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 <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net> 
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 <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: ipa: DMA addresses are nicely aligned 2021-03-29T01:12:03+00:00 Alex Elder elder@linaro.org 2021-03-28T17:31:10+00:00 19aaf72c0c7a26ab7ffc655a6d84da6a379f899b A recent patch avoided doing 64-bit modulo operations by checking the alignment of some DMA allocations using only the lower 32 bits of the address. David Laight pointed out (after the fix was committed) that DMA allocations might already satisfy the alignment requirements. And he was right. Remove the alignment checks that occur after DMA allocation requests, and update comments to explain why the constraint is satisfied. The only place IPA_TABLE_ALIGN was used was to check the alignment; it is therefore no longer needed, so get rid of it. Add comments where GSI_RING_ELEMENT_SIZE and the tre_count and event_count channel data fields are defined to make explicit they are required to be powers of 2. Revise a comment in gsi_trans_pool_init_dma(), taking into account that dma_alloc_coherent() guarantees its result is aligned to a page size (or order thereof). Don't bother printing an error if a DMA allocation fails. Suggested-by: David Laight <David.Laight@ACULAB.COM> Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net> 
A recent patch avoided doing 64-bit modulo operations by checking
the alignment of some DMA allocations using only the lower 32 bits
of the address.

David Laight pointed out (after the fix was committed) that DMA
allocations might already satisfy the alignment requirements.  And
he was right.

Remove the alignment checks that occur after DMA allocation requests,
and update comments to explain why the constraint is satisfied.  The
only place IPA_TABLE_ALIGN was used was to check the alignment; it is
therefore no longer needed, so get rid of it.

Add comments where GSI_RING_ELEMENT_SIZE and the tre_count and
event_count channel data fields are defined to make explicit they
are required to be powers of 2.

Revise a comment in gsi_trans_pool_init_dma(), taking into account
that dma_alloc_coherent() guarantees its result is aligned to a page
size (or order thereof).

Don't bother printing an error if a DMA allocation fails.

Suggested-by: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: ipa: use version based configuration for SC7180 2021-03-29T01:12:03+00:00 Alex Elder elder@linaro.org 2021-03-28T17:31:09+00:00 782d767a2d0fb08bc4d5d26f789769a84b88400b Rename the SC7180 configuration data file so that its name is derived from its IPA version. Update a few other references to the code that talk about the SC7180 rather than just IPA v4.2. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net> 
Rename the SC7180 configuration data file so that its name is
derived from its IPA version.

Update a few other references to the code that talk about the SC7180
rather than just IPA v4.2.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: ipa: switch to version based configuration 2021-03-29T01:12:03+00:00 Alex Elder elder@linaro.org 2021-03-28T17:31:08+00:00 fc566dab45f9eab9b07c971daedd0843e688e777 Rename the SDM845 configuration data file so that its name is derived from its IPA version. I am not aware of any special IPA behavior or handling that would be based on a specific SoC (as opposed to a specific version of the IPA it contains). Update a few other references to the code that talk about the SDM845 rather than just IPA v3.5.1. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net> 
Rename the SDM845 configuration data file so that its name is
derived from its IPA version.  I am not aware of any special IPA
behavior or handling that would be based on a specific SoC (as
opposed to a specific version of the IPA it contains).

Update a few other references to the code that talk about the SDM845
rather than just IPA v3.5.1.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: ipa: store BCR register values in config data 2021-03-29T01:12:03+00:00 Alex Elder elder@linaro.org 2021-03-28T17:31:06+00:00 e695bed28a5da539144676d979f76c111f9f1020 The backward compatibility register value is a platform-specific property that is not stored in the platform data. Create a data field where this can be represented, and get rid ipa_reg_bcr_val(). This register is not present starting with IPA v4.5. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net> 
The backward compatibility register value is a platform-specific
property that is not stored in the platform data.  Create a data
field where this can be represented, and get rid ipa_reg_bcr_val().

This register is not present starting with IPA v4.5.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: ipa: support more than 6 resource groups 2021-03-26T22:02:39+00:00 Alex Elder elder@linaro.org 2021-03-26T15:11:22+00:00 3219953bedc563ef988fa423f8ac67a441f69b4b IPA versions 3.0 and 3.1 support up to 8 resource groups. There is some interest in supporting these older versions of the hardware, so update the resource configuration code to program resource limits for these groups if specified. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net> 
IPA versions 3.0 and 3.1 support up to 8 resource groups.  There is
some interest in supporting these older versions of the hardware, so
update the resource configuration code to program resource limits
for these groups if specified.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>