Linux v6.6.1 - cavium-octeon

# SPDX-License-Identifier: GPL-2.0
if CPU_CAVIUM_OCTEON

config CAVIUM_CN63XXP1
	bool "Enable CN63XXP1 errata workarounds"
	default "n"
	help
	  The CN63XXP1 chip requires build time workarounds to
	  function reliably, select this option to enable them.  These
	  workarounds will cause a slight decrease in performance on
	  non-CN63XXP1 hardware, so it is recommended to select "n"
	  unless it is known the workarounds are needed.

config CAVIUM_OCTEON_CVMSEG_SIZE
	int "Number of L1 cache lines reserved for CVMSEG memory"
	range 0 54
	default 0 if !CAVIUM_OCTEON_SOC
	default 1 if CAVIUM_OCTEON_SOC
	help
	  CVMSEG LM is a segment that accesses portions of the dcache as a
	  local memory; the larger CVMSEG is, the smaller the cache is.
	  This selects the size of CVMSEG LM, which is in cache blocks. The
	  legally range is from zero to 54 cache blocks (i.e. CVMSEG LM is
	  between zero and 6192 bytes).

endif # CPU_CAVIUM_OCTEON

if CAVIUM_OCTEON_SOC

config CAVIUM_OCTEON_LOCK_L2
	bool "Lock often used kernel code in the L2"
	default "y"
	help
	  Enable locking parts of the kernel into the L2 cache.

config CAVIUM_OCTEON_LOCK_L2_TLB
	bool "Lock the TLB handler in L2"
	depends on CAVIUM_OCTEON_LOCK_L2
	default "y"
	help
	  Lock the low level TLB fast path into L2.

config CAVIUM_OCTEON_LOCK_L2_EXCEPTION
	bool "Lock the exception handler in L2"
	depends on CAVIUM_OCTEON_LOCK_L2
	default "y"
	help
	  Lock the low level exception handler into L2.

config CAVIUM_OCTEON_LOCK_L2_LOW_LEVEL_INTERRUPT
	bool "Lock the interrupt handler in L2"
	depends on CAVIUM_OCTEON_LOCK_L2
	default "y"
	help
	  Lock the low level interrupt handler into L2.

config CAVIUM_OCTEON_LOCK_L2_INTERRUPT
	bool "Lock the 2nd level interrupt handler in L2"
	depends on CAVIUM_OCTEON_LOCK_L2
	default "y"
	help
	  Lock the 2nd level interrupt handler in L2.

config CAVIUM_OCTEON_LOCK_L2_MEMCPY
	bool "Lock memcpy() in L2"
	depends on CAVIUM_OCTEON_LOCK_L2
	default "y"
	help
	  Lock the kernel's implementation of memcpy() into L2.

config CAVIUM_RESERVE32
	int "Memory to reserve for user processes shared region (MB)"
	range 0 1536
	default "0"
	help
	  Reserve a shared memory region for user processes to use for hardware
	  memory buffers. This is required for 32bit applications to be able to
	  send and receive packets directly. Applications access this memory by
	  memory mapping /dev/mem for the addresses in /proc/octeon_info. For
	  optimal performance with HugeTLBs, keep this size an even number of
	  megabytes.

config OCTEON_ILM
	tristate "Module to measure interrupt latency using Octeon CIU Timer"
	help
	  This driver is a module to measure interrupt latency using the
	  the CIU Timers on Octeon.

	  To compile this driver as a module, choose M here.  The module
	  will be called octeon-ilm

endif # CAVIUM_OCTEON_SOC