^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright 2014 Cisco Systems, Inc. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * This program is free software; you may redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * it under the terms of the GNU General Public License as published by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * the Free Software Foundation; version 2 of the License.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #ifndef _SNIC_IO_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define _SNIC_IO_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define SNIC_DFLT_SG_DESC_CNT 32 /* Default descriptors for sgl */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define SNIC_MAX_SG_DESC_CNT 60 /* Max descriptor for sgl */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define SNIC_SG_DESC_ALIGN 16 /* Descriptor address alignment */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /* SG descriptor for snic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct snic_sg_desc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) __le64 addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) __le32 len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) u32 _resvd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct snic_dflt_sgl {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct snic_sg_desc sg_desc[SNIC_DFLT_SG_DESC_CNT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct snic_max_sgl {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct snic_sg_desc sg_desc[SNIC_MAX_SG_DESC_CNT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) enum snic_req_cache_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) SNIC_REQ_CACHE_DFLT_SGL = 0, /* cache with default size sgl */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) SNIC_REQ_CACHE_MAX_SGL, /* cache with max size sgl */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) SNIC_REQ_TM_CACHE, /* cache for task mgmt reqs contains
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) snic_host_req objects only*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) SNIC_REQ_MAX_CACHES /* number of sgl caches */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* Per IO internal state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct snic_internal_io_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) char *rqi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) u64 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) u32 state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) u32 abts_status; /* Abort completion status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) u32 lr_status; /* device reset completion status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /* IO state machine */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) enum snic_ioreq_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) SNIC_IOREQ_NOT_INITED = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) SNIC_IOREQ_PENDING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) SNIC_IOREQ_ABTS_PENDING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) SNIC_IOREQ_ABTS_COMPLETE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) SNIC_IOREQ_LR_PENDING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) SNIC_IOREQ_LR_COMPLETE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) SNIC_IOREQ_COMPLETE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct snic;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct snic_host_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * snic_req_info : Contains info about IO, one per scsi command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * Notes: Make sure that the structure is aligned to 16 B
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * this helps in easy access to snic_req_info from snic_host_req
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) struct snic_req_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct snic_host_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) u64 start_time; /* start time in jiffies */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) u16 rq_pool_type; /* noticion of request pool type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) u16 req_len; /* buf len passing to fw (req + sgl)*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) u32 tgt_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) u32 tm_tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) u8 io_cmpl:1; /* sets to 1 when fw completes IO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) u8 resvd[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct scsi_cmnd *sc; /* Associated scsi cmd */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct snic *snic; /* Associated snic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) ulong sge_va; /* Pointer to Resp Buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) u64 snsbuf_va;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) struct snic_host_req *abort_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) struct completion *abts_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct snic_host_req *dr_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct completion *dr_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define rqi_to_req(rqi) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) ((struct snic_host_req *) (((struct snic_req_info *)rqi)->req))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define req_to_rqi(req) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) ((struct snic_req_info *) (((struct snic_host_req *)req)->hdr.init_ctx))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #define req_to_sgl(req) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) ((struct snic_sg_desc *) (((struct snic_host_req *)req)+1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct snic_req_info *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) snic_req_init(struct snic *, int sg_cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) void snic_req_free(struct snic *, struct snic_req_info *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) void snic_calc_io_process_time(struct snic *, struct snic_req_info *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) void snic_pci_unmap_rsp_buf(struct snic *, struct snic_req_info *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct snic_host_req *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) snic_abort_req_init(struct snic *, struct snic_req_info *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct snic_host_req *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) snic_dr_req_init(struct snic *, struct snic_req_info *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) #endif /* _SNIC_IO_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags