drivers: stm32_ipcc: update and fix RIF configuration

Rework the RIF configuration application to apply privilege
and secure level configuration only when CID filtering permits it.
Also remove unuse

drivers: stm32_ipcc: update and fix RIF configuration

Rework the RIF configuration application to apply privilege
and secure level configuration only when CID filtering permits it.
Also remove unused IPCC_NB_MAX_CID_SUPPORTED and put the tdcid state
in the ipcc_pdata to simplify the driver.

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>
Fixes: e26b8e0f3e4c ("drivers: add IPCC driver and its RIF support")

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drivers: stm32_ipcc: do not make RIF configuration mandatory

It should not be mandatory to apply a RIF configuration for an IPCC.
Remove this constraint by allocating a RIF configuration structure o

drivers: stm32_ipcc: do not make RIF configuration mandatory

It should not be mandatory to apply a RIF configuration for an IPCC.
Remove this constraint by allocating a RIF configuration structure only
when the "st,protreg" property is present in the device tree to be
able to check if it has been allocated later.

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>

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drivers: stm32_rif: update and fix RIF configuration parsing

Fix the parsing of the RIF configuration by using device tree bindings,
when necessary. Generalize RIF bit fields and use them when deali

drivers: stm32_rif: update and fix RIF configuration parsing

Fix the parsing of the RIF configuration by using device tree bindings,
when necessary. Generalize RIF bit fields and use them when dealing
with generic RIF functions. Update drivers that use stm32_rif_parse_cfg()
accordingly.

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
Fixes: 1506f47af917 ("drivers: firewall: add stm32_rif driver for common RIF features")

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drivers: add IPCC driver and its RIF support

This driver implements RIF configuration for IPCC, which is a RIF
aware IP. It means that the IPCC driver is in charge of configuring its
own RIF restric

drivers: add IPCC driver and its RIF support

This driver implements RIF configuration for IPCC, which is a RIF
aware IP. It means that the IPCC driver is in charge of configuring its
own RIF restrictions and that the IPCC has dedicated RIF configuration
registers.

RIF configuration data is part of the ipcc_pdata structure.

CID filtering is applied to the entirety of the channels of a processor.
When CID filtering is enabled for a processor, it enables the filtering and
the IPCC interrupt routing for all of its IPCC channels.

However, security and privilege configuration granularity go as far as
configuration for each IPCC channel.

Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>

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