diff options
| author | Yushan Wang <wangyushan12@huawei.com> | 2025-11-17 10:48:00 +0000 |
|---|---|---|
| committer | Conor Dooley <conor.dooley@microchip.com> | 2025-11-21 18:42:02 +0000 |
| commit | 2ec3b54a6ff04046c07b7050d02321e406c4dcd1 (patch) | |
| tree | feb50d4e8d9c04eb194c52409c04541d8e8ec9f3 /drivers/cache/Kconfig | |
| parent | 4d1608d0ab3365d1ef9447bdbc0cb4c0962f1774 (diff) | |
cache: Support cache maintenance for HiSilicon SoC Hydra Home Agent
Hydra Home Agent is a device used to maintain cache coherency. Add support
for explicit cache maintenance operations using it. A system has multiple
of these agents. Whilst only one agent is responsible for a given cache
line, interleave means that for a range operation, responsibility for the
cache lines making up the range will typically be spread across multiple
instances.
Put this driver on a new Kconfig menu under drivers/cache. The short
description as memory hotplug like operations is intended to cover
the somewhat complex set of cases where this unit applies and differentiate
it clearly from typical non coherent DMA flows.
Co-developed-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Yushan Wang <wangyushan12@huawei.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Diffstat (limited to 'drivers/cache/Kconfig')
| -rw-r--r-- | drivers/cache/Kconfig | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/cache/Kconfig b/drivers/cache/Kconfig index 59a79df4c0ce..1518449d47b5 100644 --- a/drivers/cache/Kconfig +++ b/drivers/cache/Kconfig @@ -32,3 +32,25 @@ config STARFIVE_STARLINK_CACHE Support for the StarLink cache controller IP from StarFive. endif #CACHEMAINT_FOR_DMA + +menuconfig CACHEMAINT_FOR_HOTPLUG + bool "Cache management for memory hot plug like operations" + depends on GENERIC_CPU_CACHE_MAINTENANCE + help + These drivers implement cache management for flows where it is necessary + to flush data from all host caches. + +if CACHEMAINT_FOR_HOTPLUG + +config HISI_SOC_HHA + tristate "HiSilicon Hydra Home Agent (HHA) device driver" + depends on (ARM64 && ACPI) || COMPILE_TEST + help + The Hydra Home Agent (HHA) is responsible for cache coherency + on the SoC. This drivers enables the cache maintenance functions of + the HHA. + + This driver can be built as a module. If so, the module will be + called hisi_soc_hha. + +endif #CACHEMAINT_FOR_HOTPLUG |