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| author | Christophe Lombard <clombard@linux.vnet.ibm.com> | 2018-01-11 09:55:25 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-01-19 23:19:37 +1100 |
| commit | b1db551324f72fa14ad82ca31237a7ed418104df (patch) | |
| tree | 3e43a06af0f301bf89b3746b82cb2e7bda7f8afc /include/uapi/misc | |
| parent | 074db39e00bb0d35cda7de9a4bae3a9b6da557ad (diff) | |
| download | linux-stable-b1db551324f72fa14ad82ca31237a7ed418104df.tar.gz linux-stable-b1db551324f72fa14ad82ca31237a7ed418104df.tar.bz2 linux-stable-b1db551324f72fa14ad82ca31237a7ed418104df.zip | |
cxl: Add support for ASB_Notify on POWER9
The POWER9 core supports a new feature: ASB_Notify which requires the
support of the Special Purpose Register: TIDR.
The ASB_Notify command, generated by the AFU, will attempt to
wake-up the host thread identified by the particular LPID:PID:TID.
This patch assign a unique TIDR (thread id) for the current thread which
will be used in the process element entry.
Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Reviewed-by: Philippe Bergheaud <felix@linux.vnet.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Reviewed-by: Vaibhav Jain <vaibhav@linux.vnet.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'include/uapi/misc')
| -rw-r--r-- | include/uapi/misc/cxl.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/include/uapi/misc/cxl.h b/include/uapi/misc/cxl.h index 49e8fd08855a..56376d3907d8 100644 --- a/include/uapi/misc/cxl.h +++ b/include/uapi/misc/cxl.h @@ -20,20 +20,22 @@ struct cxl_ioctl_start_work { __u64 work_element_descriptor; __u64 amr; __s16 num_interrupts; - __s16 reserved1; - __s32 reserved2; + __u16 tid; + __s32 reserved1; + __u64 reserved2; __u64 reserved3; __u64 reserved4; __u64 reserved5; - __u64 reserved6; }; #define CXL_START_WORK_AMR 0x0000000000000001ULL #define CXL_START_WORK_NUM_IRQS 0x0000000000000002ULL #define CXL_START_WORK_ERR_FF 0x0000000000000004ULL +#define CXL_START_WORK_TID 0x0000000000000008ULL #define CXL_START_WORK_ALL (CXL_START_WORK_AMR |\ CXL_START_WORK_NUM_IRQS |\ - CXL_START_WORK_ERR_FF) + CXL_START_WORK_ERR_FF |\ + CXL_START_WORK_TID) /* Possible modes that an afu can be in */ |