drivers/crypto/caam/Kconfig

   1 config CRYPTO_DEV_FSL_CAAM
   2         tristate "Freescale CAAM-Multicore driver backend"
   3         depends on FSL_SOC || ARCH_MXC || ARCH_LAYERSCAPE
   4         select SOC_BUS
   5         help
   6           Enables the driver module for Freescale's Cryptographic Accelerator
   7           and Assurance Module (CAAM), also known as the SEC version 4 (SEC4).
   8           This module creates job ring devices, and configures h/w
   9           to operate as a DPAA component automatically, depending
  10           on h/w feature availability.
  11
  12           To compile this driver as a module, choose M here: the module
  13           will be called caam.
  14
  15 config CRYPTO_DEV_FSL_CAAM_JR
  16         tristate "Freescale CAAM Job Ring driver backend"
  17         depends on CRYPTO_DEV_FSL_CAAM
  18         default y
  19         help
  20           Enables the driver module for Job Rings which are part of
  21           Freescale's Cryptographic Accelerator
  22           and Assurance Module (CAAM). This module adds a job ring operation
  23           interface.
  24
  25           To compile this driver as a module, choose M here: the module
  26           will be called caam_jr.
  27
  28 config CRYPTO_DEV_FSL_CAAM_RINGSIZE
  29         int "Job Ring size"
  30         depends on CRYPTO_DEV_FSL_CAAM_JR
  31         range 2 9
  32         default "9"
  33         help
  34           Select size of Job Rings as a power of 2, within the
  35           range 2-9 (ring size 4-512).
  36           Examples:
  37                 2 => 4
  38                 3 => 8
  39                 4 => 16
  40                 5 => 32
  41                 6 => 64
  42                 7 => 128
  43                 8 => 256
  44                 9 => 512
  45
  46 config CRYPTO_DEV_FSL_CAAM_INTC
  47         bool "Job Ring interrupt coalescing"
  48         depends on CRYPTO_DEV_FSL_CAAM_JR
  49         help
  50           Enable the Job Ring's interrupt coalescing feature.
  51
  52           Note: the driver already provides adequate
  53           interrupt coalescing in software.
  54
  55 config CRYPTO_DEV_FSL_CAAM_INTC_COUNT_THLD
  56         int "Job Ring interrupt coalescing count threshold"
  57         depends on CRYPTO_DEV_FSL_CAAM_INTC
  58         range 1 255
  59         default 255
  60         help
  61           Select number of descriptor completions to queue before
  62           raising an interrupt, in the range 1-255. Note that a selection
  63           of 1 functionally defeats the coalescing feature, and a selection
  64           equal or greater than the job ring size will force timeouts.
  65
  66 config CRYPTO_DEV_FSL_CAAM_INTC_TIME_THLD
  67         int "Job Ring interrupt coalescing timer threshold"
  68         depends on CRYPTO_DEV_FSL_CAAM_INTC
  69         range 1 65535
  70         default 2048
  71         help
  72           Select number of bus clocks/64 to timeout in the case that one or
  73           more descriptor completions are queued without reaching the count
  74           threshold. Range is 1-65535.
  75
  76 config CRYPTO_DEV_FSL_CAAM_CRYPTO_API
  77         tristate "Register algorithm implementations with the Crypto API"
  78         depends on CRYPTO_DEV_FSL_CAAM_JR
  79         default y
  80         select CRYPTO_AEAD
  81         select CRYPTO_AUTHENC
  82         select CRYPTO_BLKCIPHER
  83         help
  84           Selecting this will offload crypto for users of the
  85           scatterlist crypto API (such as the linux native IPSec
  86           stack) to the SEC4 via job ring.
  87
  88           To compile this as a module, choose M here: the module
  89           will be called caamalg.
  90
  91 config CRYPTO_DEV_FSL_CAAM_CRYPTO_API_QI
  92         tristate "Queue Interface as Crypto API backend"
  93         depends on CRYPTO_DEV_FSL_CAAM_JR && FSL_DPAA && NET
  94         default y
  95         select CRYPTO_AUTHENC
  96         select CRYPTO_BLKCIPHER
  97         help
  98           Selecting this will use CAAM Queue Interface (QI) for sending
  99           & receiving crypto jobs to/from CAAM. This gives better performance
 100           than job ring interface when the number of cores are more than the
 101           number of job rings assigned to the kernel. The number of portals
 102           assigned to the kernel should also be more than the number of
 103           job rings.
 104
 105           To compile this as a module, choose M here: the module
 106           will be called caamalg_qi.
 107
 108 config CRYPTO_DEV_FSL_CAAM_AHASH_API
 109         tristate "Register hash algorithm implementations with Crypto API"
 110         depends on CRYPTO_DEV_FSL_CAAM_JR
 111         default y
 112         select CRYPTO_HASH
 113         help
 114           Selecting this will offload ahash for users of the
 115           scatterlist crypto API to the SEC4 via job ring.
 116
 117           To compile this as a module, choose M here: the module
 118           will be called caamhash.
 119
 120 config CRYPTO_DEV_FSL_CAAM_PKC_API
 121         tristate "Register public key cryptography implementations with Crypto API"
 122         depends on CRYPTO_DEV_FSL_CAAM_JR
 123         default y
 124         select CRYPTO_RSA
 125         help
 126           Selecting this will allow SEC Public key support for RSA.
 127           Supported cryptographic primitives: encryption, decryption,
 128           signature and verification.
 129           To compile this as a module, choose M here: the module
 130           will be called caam_pkc.
 131
 132 config CRYPTO_DEV_FSL_CAAM_RNG_API
 133         tristate "Register caam device for hwrng API"
 134         depends on CRYPTO_DEV_FSL_CAAM_JR
 135         default y
 136         select CRYPTO_RNG
 137         select HW_RANDOM
 138         help
 139           Selecting this will register the SEC4 hardware rng to
 140           the hw_random API for suppying the kernel entropy pool.
 141
 142           To compile this as a module, choose M here: the module
 143           will be called caamrng.
 144
 145 config CRYPTO_DEV_FSL_CAAM_DEBUG
 146         bool "Enable debug output in CAAM driver"
 147         depends on CRYPTO_DEV_FSL_CAAM
 148         help
 149           Selecting this will enable printing of various debug
 150           information in the CAAM driver.
 151
 152 config CRYPTO_DEV_FSL_CAAM_CRYPTO_API_DESC
 153         def_tristate (CRYPTO_DEV_FSL_CAAM_CRYPTO_API || \
 154                       CRYPTO_DEV_FSL_CAAM_CRYPTO_API_QI)