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LS1021A is a QorIQ SoC having little endian CAAM. There are a few differences b/w QorIQ and i.MX from CAAM perspective: 1. i.MX platforms are somewhat special wrt. 64-bit registers: -big endian format at 64-bit level: MSW at address+0 and LSW at address+4 -little endian format at 32-bit level (within MSW and LSW) and thus need special handling. 2. No CCM (clock controller module) for QorIQ. No CAAM clocks to enable / disable. A new Kconfig option - CRYPTO_DEV_FSL_CAAM_LE - is added to indicate CAAM is little endian (*). It is hidden from the user (to avoid misconfiguration); when adding support for a new platform with LE CAAM, either the Kconfig needs to be updated or the corresponding defconfig needs to indicate that CAAM is LE. (*) Using a DT property to provide CAAM endianness would not allow for the ifdeffery. In order to keep changes to a minimum, the following changes are postponed: -endianness fix of the last word in the S/G (rsvd2, bpid, offset), fields are always 0 anyway; -S/G format fix for i.MX7 (yes, i.MX7 support was not added yet, but still...) Signed-off-by: Horia Geant? <horia.geanta@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
129 lines
3.8 KiB
Plaintext
129 lines
3.8 KiB
Plaintext
config CRYPTO_DEV_FSL_CAAM
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tristate "Freescale CAAM-Multicore driver backend"
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depends on FSL_SOC || ARCH_MXC
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help
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Enables the driver module for Freescale's Cryptographic Accelerator
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and Assurance Module (CAAM), also known as the SEC version 4 (SEC4).
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This module creates job ring devices, and configures h/w
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to operate as a DPAA component automatically, depending
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on h/w feature availability.
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To compile this driver as a module, choose M here: the module
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will be called caam.
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config CRYPTO_DEV_FSL_CAAM_JR
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tristate "Freescale CAAM Job Ring driver backend"
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depends on CRYPTO_DEV_FSL_CAAM
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default y
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help
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Enables the driver module for Job Rings which are part of
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Freescale's Cryptographic Accelerator
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and Assurance Module (CAAM). This module adds a job ring operation
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interface.
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To compile this driver as a module, choose M here: the module
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will be called caam_jr.
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config CRYPTO_DEV_FSL_CAAM_RINGSIZE
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int "Job Ring size"
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depends on CRYPTO_DEV_FSL_CAAM_JR
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range 2 9
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default "9"
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help
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Select size of Job Rings as a power of 2, within the
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range 2-9 (ring size 4-512).
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Examples:
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2 => 4
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3 => 8
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4 => 16
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5 => 32
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6 => 64
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7 => 128
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8 => 256
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9 => 512
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config CRYPTO_DEV_FSL_CAAM_INTC
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bool "Job Ring interrupt coalescing"
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depends on CRYPTO_DEV_FSL_CAAM_JR
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help
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Enable the Job Ring's interrupt coalescing feature.
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Note: the driver already provides adequate
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interrupt coalescing in software.
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config CRYPTO_DEV_FSL_CAAM_INTC_COUNT_THLD
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int "Job Ring interrupt coalescing count threshold"
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depends on CRYPTO_DEV_FSL_CAAM_INTC
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range 1 255
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default 255
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help
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Select number of descriptor completions to queue before
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raising an interrupt, in the range 1-255. Note that a selection
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of 1 functionally defeats the coalescing feature, and a selection
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equal or greater than the job ring size will force timeouts.
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config CRYPTO_DEV_FSL_CAAM_INTC_TIME_THLD
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int "Job Ring interrupt coalescing timer threshold"
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depends on CRYPTO_DEV_FSL_CAAM_INTC
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range 1 65535
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default 2048
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help
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Select number of bus clocks/64 to timeout in the case that one or
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more descriptor completions are queued without reaching the count
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threshold. Range is 1-65535.
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config CRYPTO_DEV_FSL_CAAM_CRYPTO_API
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tristate "Register algorithm implementations with the Crypto API"
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depends on CRYPTO_DEV_FSL_CAAM && CRYPTO_DEV_FSL_CAAM_JR
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default y
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select CRYPTO_AEAD
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select CRYPTO_AUTHENC
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select CRYPTO_BLKCIPHER
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help
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Selecting this will offload crypto for users of the
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scatterlist crypto API (such as the linux native IPSec
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stack) to the SEC4 via job ring.
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To compile this as a module, choose M here: the module
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will be called caamalg.
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config CRYPTO_DEV_FSL_CAAM_AHASH_API
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tristate "Register hash algorithm implementations with Crypto API"
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depends on CRYPTO_DEV_FSL_CAAM && CRYPTO_DEV_FSL_CAAM_JR
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default y
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select CRYPTO_HASH
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help
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Selecting this will offload ahash for users of the
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scatterlist crypto API to the SEC4 via job ring.
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To compile this as a module, choose M here: the module
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will be called caamhash.
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config CRYPTO_DEV_FSL_CAAM_RNG_API
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tristate "Register caam device for hwrng API"
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depends on CRYPTO_DEV_FSL_CAAM && CRYPTO_DEV_FSL_CAAM_JR
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default y
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select CRYPTO_RNG
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select HW_RANDOM
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help
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Selecting this will register the SEC4 hardware rng to
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the hw_random API for suppying the kernel entropy pool.
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To compile this as a module, choose M here: the module
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will be called caamrng.
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config CRYPTO_DEV_FSL_CAAM_IMX
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def_bool SOC_IMX6 || SOC_IMX7D
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depends on CRYPTO_DEV_FSL_CAAM
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config CRYPTO_DEV_FSL_CAAM_LE
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def_bool CRYPTO_DEV_FSL_CAAM_IMX || SOC_LS1021A
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depends on CRYPTO_DEV_FSL_CAAM
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config CRYPTO_DEV_FSL_CAAM_DEBUG
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bool "Enable debug output in CAAM driver"
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depends on CRYPTO_DEV_FSL_CAAM
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help
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Selecting this will enable printing of various debug
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information in the CAAM driver.
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