Re: [XEN PATCH v10 06/24] xen/arm: ffa: add flags for FFA_PARTITION_INFO_GET

[Bertrand Marquis <Bertrand.Marquis@xxxxxxx>]

Hi Jens,

> On 17 Jul 2023, at 09:20, Jens Wiklander <jens.wiklander@xxxxxxxxxx> wrote:
> 
> According to DEN0077A version 1.1 REL0, section 13.8, defines
> flags used for the function FFA_PARTITION_INFO_GET.
> 
> Signed-off-by: Jens Wiklander <jens.wiklander@xxxxxxxxxx>
> Reviewed-by: Henry Wang <Henry.Wang@xxxxxxx>

Reviewed-by: Bertrand Marquis <bertrand.marquis@xxxxxxx>

Cheers
Bertrand

> ---
> xen/arch/arm/tee/ffa.c | 34 ++++++++++++++++++++++++++++++++++
> 1 file changed, 34 insertions(+)
> 
> diff --git a/xen/arch/arm/tee/ffa.c b/xen/arch/arm/tee/ffa.c
> index 2296e3115beb..c1dead73d1f2 100644
> --- a/xen/arch/arm/tee/ffa.c
> +++ b/xen/arch/arm/tee/ffa.c
> @@ -57,6 +57,40 @@
> #define FFA_MY_VERSION          MAKE_FFA_VERSION(FFA_MY_VERSION_MAJOR, \
>                                                  FFA_MY_VERSION_MINOR)
> 
> +/*
> + * Flags to determine partition properties in FFA_PARTITION_INFO_GET return
> + * message:
> + * BIT(0): Supports receipt of direct requests
> + * BIT(1): Can send direct requests
> + * BIT(2): Can send and receive indirect messages
> + * BIT(3): Supports receipt of notifications
> + * BIT(4-5): Partition ID is a PE endpoint ID
> + * BIT(6): Partition must be informed about each VM that is created by
> + *         the Hypervisor
> + * BIT(7): Partition must be informed about each VM that is destroyed by
> + *         the Hypervisor
> + * BIT(8): Partition runs in the AArch64 execution state else AArch32
> + *         execution state
> + */
> +#define FFA_PART_PROP_DIRECT_REQ_RECV   BIT(0, U)
> +#define FFA_PART_PROP_DIRECT_REQ_SEND   BIT(1, U)
> +#define FFA_PART_PROP_INDIRECT_MSGS     BIT(2, U)
> +#define FFA_PART_PROP_RECV_NOTIF        BIT(3, U)
> +#define FFA_PART_PROP_IS_TYPE_MASK      (3U << 4)
> +#define FFA_PART_PROP_IS_PE_ID          (0U << 4)
> +#define FFA_PART_PROP_IS_SEPID_INDEP    (1U << 4)
> +#define FFA_PART_PROP_IS_SEPID_DEP      (2U << 4)
> +#define FFA_PART_PROP_IS_AUX_ID         (3U << 4)
> +#define FFA_PART_PROP_NOTIF_CREATED     BIT(6, U)
> +#define FFA_PART_PROP_NOTIF_DESTROYED   BIT(7, U)
> +#define FFA_PART_PROP_AARCH64_STATE     BIT(8, U)
> +
> +/*
> + * Flag used as parameter to FFA_PARTITION_INFO_GET to return partition
> + * count only.
> + */
> +#define FFA_PARTITION_INFO_GET_COUNT_FLAG BIT(0, U)
> +
> /* Function IDs */
> #define FFA_ERROR                       0x84000060U
> #define FFA_SUCCESS_32                  0x84000061U
> -- 
> 2.34.1
>