1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/list.h>
6 #include <linux/kfifo.h>
10 INVALIDATE_CMD_RESP_EL = 0,
11 VALID_CMD_RESP_EL = 0x80,
12 VALID_INIT_MSG = 0xC0,
13 VALID_TRANS_EVENT = 0xFF
30 enum srp_trans_event {
33 PARTNER_DEREGISTER = 2,
35 PREPARE_FOR_SUSPEND = 9,
36 RESUME_FROM_SUSP = 0xA
40 CRQ_ENTRY_OVERWRITTEN = 0x20,
41 HEADER_DESCRIPTOR = 0xF1,
46 enum srp_mad_version {
57 enum srp_task_attributes {
65 SRP_TASK_MANAGEMENT_FUNCTION_COMPLETE = 0,
66 SRP_REQUEST_FIELDS_INVALID = 2,
67 SRP_TASK_MANAGEMENT_FUNCTION_NOT_SUPPORTED = 4,
68 SRP_TASK_MANAGEMENT_FUNCTION_FAILED = 5
87 struct list_head cmd_queue;
90 struct srp_queue iu_queue;
92 struct srp_buf **rx_ring;
98 struct srp_target *target;
100 struct list_head ilist;
101 dma_addr_t remote_token;
104 struct srp_buf *sbuf;
108 struct ibmvscsis_cmd;
110 typedef int (srp_rdma_t)(struct ibmvscsis_cmd *, struct scatterlist *, int,
111 struct srp_direct_buf *, int,
112 enum dma_data_direction, unsigned int);
113 int srp_target_alloc(struct srp_target *, struct device *, size_t, size_t);
114 void srp_target_free(struct srp_target *);
115 struct iu_entry *srp_iu_get(struct srp_target *);
116 void srp_iu_put(struct iu_entry *);
117 int srp_transfer_data(struct ibmvscsis_cmd *, struct srp_cmd *,
118 srp_rdma_t, int, int);
119 u64 srp_data_length(struct srp_cmd *cmd, enum dma_data_direction dir);
120 int srp_get_desc_table(struct srp_cmd *srp_cmd, enum dma_data_direction *dir,
122 static inline int srp_cmd_direction(struct srp_cmd *cmd)
124 return (cmd->buf_fmt >> 4) ? DMA_TO_DEVICE : DMA_FROM_DEVICE;