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pds_fwctl: add rpc and query support

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The pds_fwctl driver doesn't know what RPC operations are available
in the firmware, so also doesn't know what scope they might have.  The
userland utility supplies the firmware "endpoint" and "operation" id values
and this driver queries the firmware for endpoints and their available
operations.  The operation descriptions include the scope information
which the driver uses for scope testing.

Link: https://patch.msgid.link/r/20250320194412.67983-6-shannon.nelson@amd.com
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Brett Creeley <brett.creeley@amd.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Brett Creeley
2025-03-20 12:44:11 -07:00
committed by Jason Gunthorpe
parent 4d09dd11d7
commit 92c66ee829
3 changed files with 593 additions and 1 deletions
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30
include/uapi/fwctl/pds.h
View File

@@ -29,4 +29,34 @@ enum pds_fwctl_capabilities {
PDS_FWCTL_QUERY_CAP = 0,
PDS_FWCTL_SEND_CAP,
};
/**
* struct fwctl_rpc_pds
* @in.op: requested operation code
* @in.ep: firmware endpoint to operate on
* @in.rsvd: reserved
* @in.len: length of payload data
* @in.payload: address of payload buffer
* @in: rpc in parameters
* @out.retval: operation result value
* @out.rsvd: reserved
* @out.len: length of result data buffer
* @out.payload: address of payload data buffer
* @out: rpc out parameters
*/
struct fwctl_rpc_pds {
struct {
__u32 op;
__u32 ep;
__u32 rsvd;
__u32 len;
__aligned_u64 payload;
} in;
struct {
__u32 retval;
__u32 rsvd[2];
__u32 len;
__aligned_u64 payload;
} out;
};
#endif /* _UAPI_FWCTL_PDS_H_ */