diff options
| author | Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org> | 2026-09-23 19:34:00 +0530 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2026-09-24 16:49:30 +0100 |
| commit | 4cd849026e2cad097da1864dbd6f58e9db51af0f (patch) | |
| tree | 9090ddba5b40fd4c412b064e8a0879d0770553c1 /drivers/virt/coco | |
| parent | d8263a131bb05398faa72ac32be54a03e48fa197 (diff) | |
firmware: arm_rmm: Move RSI support out of arch/arm64
The RSI SMCCC function IDs describe a firmware ABI and are not arm64
architecture specific definitions. Follow-up changes need to use them from
non-arch code, including drivers/firmware/smccc and the Arm CCA guest
driver.
Move the complete Realm Service Interface (RSI) implementation from
arch/arm64 to drivers/firmware/arm_rmm. The RSI SMCCC definitions and
command helpers are also moved to include/linux so they can be shared by
architecture code and firmware or driver code. This also keeps the
firmware interface outside architecture code, as requested [1].
[1] https://lore.kernel.org/all/agsNO9cc7H-b0H8L@willie-the-truck
Reviewed-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'drivers/virt/coco')
| -rw-r--r-- | drivers/virt/coco/arm-cca-guest/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/virt/coco/arm-cca-guest/arm-cca-guest.c | 5 |
2 files changed, 3 insertions, 4 deletions
diff --git a/drivers/virt/coco/arm-cca-guest/Kconfig b/drivers/virt/coco/arm-cca-guest/Kconfig index 3f0f013f03f1..2582ebb36922 100644 --- a/drivers/virt/coco/arm-cca-guest/Kconfig +++ b/drivers/virt/coco/arm-cca-guest/Kconfig @@ -1,6 +1,6 @@ config ARM_CCA_GUEST tristate "Arm CCA Guest driver" - depends on ARM64 + depends on ARM_RMM_RSI select TSM_REPORTS help The driver provides userspace interface to request and diff --git a/drivers/virt/coco/arm-cca-guest/arm-cca-guest.c b/drivers/virt/coco/arm-cca-guest/arm-cca-guest.c index 0eeddd1ff05b..b741643d1364 100644 --- a/drivers/virt/coco/arm-cca-guest/arm-cca-guest.c +++ b/drivers/virt/coco/arm-cca-guest/arm-cca-guest.c @@ -3,7 +3,8 @@ * Copyright (C) 2023 ARM Ltd. */ -#include <linux/arm-smccc.h> +#include <linux/arm-rsi-cmds.h> +#include <linux/arm-smccc-rsi.h> #include <linux/cc_platform.h> #include <linux/kernel.h> #include <linux/device-id/platform.h> @@ -12,8 +13,6 @@ #include <linux/tsm.h> #include <linux/types.h> -#include <asm/rsi.h> - /** * struct arm_cca_token_info - a descriptor for the token buffer. * @granule: PA of the granule to which the token will be written |