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config CRYPTO_DEV_FSL_CAAM
tristate "Freescale CAAM-Multicore driver backend"
depends on FSL_SOC || ARCH_MXC || ARCH_LAYERSCAPE
select SOC_BUS
help
Enables the driver module for Freescale's Cryptographic Accelerator
and Assurance Module (CAAM), also known as the SEC version 4 (SEC4).
This module creates job ring devices, and configures h/w
to operate as a DPAA component automatically, depending
on h/w feature availability.
To compile this driver as a module, choose M here: the module
will be called caam.
config CRYPTO_DEV_FSL_CAAM_JR
tristate "Freescale CAAM Job Ring driver backend"
depends on CRYPTO_DEV_FSL_CAAM
default y
help
Enables the driver module for Job Rings which are part of
Freescale's Cryptographic Accelerator
and Assurance Module (CAAM). This module adds a job ring operation
interface.
To compile this driver as a module, choose M here: the module
will be called caam_jr.
config CRYPTO_DEV_FSL_CAAM_RINGSIZE
int "Job Ring size"
depends on CRYPTO_DEV_FSL_CAAM_JR
range 2 9
default "9"
help
Select size of Job Rings as a power of 2, within the
range 2-9 (ring size 4-512).
Examples:
2 => 4
3 => 8
4 => 16
5 => 32
6 => 64
7 => 128
8 => 256
9 => 512
config CRYPTO_DEV_FSL_CAAM_INTC
bool "Job Ring interrupt coalescing"
depends on CRYPTO_DEV_FSL_CAAM_JR
help
Enable the Job Ring's interrupt coalescing feature.
Note: the driver already provides adequate
interrupt coalescing in software.
config CRYPTO_DEV_FSL_CAAM_INTC_COUNT_THLD
int "Job Ring interrupt coalescing count threshold"
depends on CRYPTO_DEV_FSL_CAAM_INTC
range 1 255
default 255
help
Select number of descriptor completions to queue before
raising an interrupt, in the range 1-255. Note that a selection
of 1 functionally defeats the coalescing feature, and a selection
equal or greater than the job ring size will force timeouts.
config CRYPTO_DEV_FSL_CAAM_INTC_TIME_THLD
int "Job Ring interrupt coalescing timer threshold"
depends on CRYPTO_DEV_FSL_CAAM_INTC
range 1 65535
default 2048
help
Select number of bus clocks/64 to timeout in the case that one or
more descriptor completions are queued without reaching the count
threshold. Range is 1-65535.
config CRYPTO_DEV_FSL_CAAM_CRYPTO_API
tristate "Register algorithm implementations with the Crypto API"
depends on CRYPTO_DEV_FSL_CAAM_JR
default y
select CRYPTO_AEAD
select CRYPTO_AUTHENC
select CRYPTO_BLKCIPHER
help
Selecting this will offload crypto for users of the
scatterlist crypto API (such as the linux native IPSec
stack) to the SEC4 via job ring.
To compile this as a module, choose M here: the module
will be called caamalg.
config CRYPTO_DEV_FSL_CAAM_CRYPTO_API_QI
tristate "Queue Interface as Crypto API backend"
depends on CRYPTO_DEV_FSL_CAAM_JR && FSL_DPAA && NET
default y
select CRYPTO_AUTHENC
select CRYPTO_BLKCIPHER
help
Selecting this will use CAAM Queue Interface (QI) for sending
& receiving crypto jobs to/from CAAM. This gives better performance
than job ring interface when the number of cores are more than the
number of job rings assigned to the kernel. The number of portals
assigned to the kernel should also be more than the number of
job rings.
To compile this as a module, choose M here: the module
will be called caamalg_qi.
config CRYPTO_DEV_FSL_CAAM_AHASH_API
tristate "Register hash algorithm implementations with Crypto API"
depends on CRYPTO_DEV_FSL_CAAM_JR
default y
select CRYPTO_HASH
help
Selecting this will offload ahash for users of the
scatterlist crypto API to the SEC4 via job ring.
To compile this as a module, choose M here: the module
will be called caamhash.
config CRYPTO_DEV_FSL_CAAM_PKC_API
tristate "Register public key cryptography implementations with Crypto API"
depends on CRYPTO_DEV_FSL_CAAM_JR
default y
select CRYPTO_RSA
help
Selecting this will allow SEC Public key support for RSA.
Supported cryptographic primitives: encryption, decryption,
signature and verification.
To compile this as a module, choose M here: the module
will be called caam_pkc.
config CRYPTO_DEV_FSL_CAAM_RNG_API
tristate "Register caam device for hwrng API"
depends on CRYPTO_DEV_FSL_CAAM_JR
default y
select CRYPTO_RNG
select HW_RANDOM
help
Selecting this will register the SEC4 hardware rng to
the hw_random API for suppying the kernel entropy pool.
To compile this as a module, choose M here: the module
will be called caamrng.
config CRYPTO_DEV_FSL_CAAM_DEBUG
bool "Enable debug output in CAAM driver"
depends on CRYPTO_DEV_FSL_CAAM
help
Selecting this will enable printing of various debug
information in the CAAM driver.
config CRYPTO_DEV_FSL_CAAM_CRYPTO_API_DESC
def_tristate (CRYPTO_DEV_FSL_CAAM_CRYPTO_API || \
CRYPTO_DEV_FSL_CAAM_CRYPTO_API_QI)
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