/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ /* * Copyright(c) 2023 - Cornelis Networks, Inc. * Copyright(c) 2015 - 2018 Intel Corporation. */ #ifndef _HFI1_USER_SDMA_H #define _HFI1_USER_SDMA_H #include <linux/device.h> #include <linux/wait.h> #include "common.h" #include "iowait.h" #include "user_exp_rcv.h" #include "mmu_rb.h" #include "pinning.h" #include "sdma.h" /* The maximum number of Data io vectors per message/request */ #define MAX_VECTORS_PER_REQ … /* * Maximum number of packet to send from each message/request * before moving to the next one. */ #define MAX_PKTS_PER_QUEUE … #define num_pages(x) … #define req_opcode(x) … #define req_version(x) … #define req_iovcnt(x) … /* Number of BTH.PSN bits used for sequence number in expected rcvs */ #define BTH_SEQ_MASK … #define AHG_KDETH_INTR_SHIFT … #define AHG_KDETH_SH_SHIFT … #define AHG_KDETH_ARRAY_SIZE … #define PBC2LRH(x) … #define LRH2PBC(x) … /** * Build an SDMA AHG header update descriptor and save it to an array. * @arr - Array to save the descriptor to. * @idx - Index of the array at which the descriptor will be saved. * @array_size - Size of the array arr. * @dw - Update index into the header in DWs. * @bit - Start bit. * @width - Field width. * @value - 16 bits of immediate data to write into the field. * Returns -ERANGE if idx is invalid. If successful, returns the next index * (idx + 1) of the array to be used for the next descriptor. */ static inline int ahg_header_set(u32 *arr, int idx, size_t array_size, u8 dw, u8 bit, u8 width, u16 value) { … } /* Tx request flag bits */ #define TXREQ_FLAGS_REQ_ACK … #define TXREQ_FLAGS_REQ_DISABLE_SH … enum pkt_q_sdma_state { … }; #define SDMA_IOWAIT_TIMEOUT … #define SDMA_DBG(req, fmt, ...) … struct hfi1_user_sdma_pkt_q { … }; struct hfi1_user_sdma_comp_q { … }; struct user_sdma_iovec { … }; /* evict operation argument */ struct evict_data { … }; struct user_sdma_request { … } ____cacheline_aligned_in_smp; /* * A single txreq could span up to 3 physical pages when the MTU * is sufficiently large (> 4K). Each of the IOV pointers also * needs it's own set of flags so the vector has been handled * independently of each other. */ struct user_sdma_txreq { … }; int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *uctxt, struct hfi1_filedata *fd); int hfi1_user_sdma_free_queues(struct hfi1_filedata *fd, struct hfi1_ctxtdata *uctxt); int hfi1_user_sdma_process_request(struct hfi1_filedata *fd, struct iovec *iovec, unsigned long dim, unsigned long *count); #endif /* _HFI1_USER_SDMA_H */
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