Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * This file contains defines, structures, etc. that are used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * to communicate between kernel and user code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #ifndef RVT_ABI_USER_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #define RVT_ABI_USER_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <rdma/ib_user_verbs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #ifndef RDMA_ATOMIC_UAPI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define RDMA_ATOMIC_UAPI(_type, _name) struct{ _type val; } _name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) struct rvt_wqe_sge {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	__aligned_u64 addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	__u32 length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	__u32 lkey;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  * This structure is used to contain the head pointer, tail pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)  * and completion queue entries as a single memory allocation so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)  * it can be mmap'ed into user space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct rvt_cq_wc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	/* index of next entry to fill */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	RDMA_ATOMIC_UAPI(__u32, head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	/* index of next ib_poll_cq() entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	RDMA_ATOMIC_UAPI(__u32, tail);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	/* these are actually size ibcq.cqe + 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	struct ib_uverbs_wc uqueue[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)  * Receive work request queue entry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)  * The size of the sg_list is determined when the QP (or SRQ) is created
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)  * and stored in qp->r_rq.max_sge (or srq->rq.max_sge).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct rvt_rwqe {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	__u64 wr_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	__u8 num_sge;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	__u8 padding[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	struct rvt_wqe_sge sg_list[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)  * This structure is used to contain the head pointer, tail pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)  * and receive work queue entries as a single memory allocation so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)  * it can be mmap'ed into user space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)  * Note that the wq array elements are variable size so you can't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)  * just index into the array to get the N'th element;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)  * use get_rwqe_ptr() for user space and rvt_get_rwqe_ptr()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)  * for kernel space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct rvt_rwq {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	/* new work requests posted to the head */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	RDMA_ATOMIC_UAPI(__u32, head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	/* receives pull requests from here. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	RDMA_ATOMIC_UAPI(__u32, tail);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	struct rvt_rwqe wq[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #endif /* RVT_ABI_USER_H */