^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) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/mempool.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <scsi/scsi_tcq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "snic_disc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "snic.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "snic_io.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) /* snic target types */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static const char * const snic_tgt_type_str[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) [SNIC_TGT_DAS] = "DAS",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) [SNIC_TGT_SAN] = "SAN",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static inline const char *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) snic_tgt_type_to_str(int typ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) return ((typ > SNIC_TGT_NONE && typ <= SNIC_TGT_SAN) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) snic_tgt_type_str[typ] : "Unknown");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static const char * const snic_tgt_state_str[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) [SNIC_TGT_STAT_INIT] = "INIT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) [SNIC_TGT_STAT_ONLINE] = "ONLINE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) [SNIC_TGT_STAT_OFFLINE] = "OFFLINE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) [SNIC_TGT_STAT_DEL] = "DELETION IN PROGRESS",
^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) const char *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) snic_tgt_state_to_str(int state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) return ((state >= SNIC_TGT_STAT_INIT && state <= SNIC_TGT_STAT_DEL) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) snic_tgt_state_str[state] : "UNKNOWN");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * Initiate report_tgt req desc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) snic_report_tgt_init(struct snic_host_req *req, u32 hid, u8 *buf, u32 len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) dma_addr_t rsp_buf_pa, ulong ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct snic_sg_desc *sgd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) snic_io_hdr_enc(&req->hdr, SNIC_REQ_REPORT_TGTS, 0, SCSI_NO_TAG, hid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 1, ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) req->u.rpt_tgts.sg_cnt = cpu_to_le16(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) sgd = req_to_sgl(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) sgd[0].addr = cpu_to_le64(rsp_buf_pa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) sgd[0].len = cpu_to_le32(len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) sgd[0]._resvd = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) req->u.rpt_tgts.sg_addr = cpu_to_le64((ulong)sgd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * snic_queue_report_tgt_req: Queues report target request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) snic_queue_report_tgt_req(struct snic *snic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) u32 ntgts, buf_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) u8 *buf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) dma_addr_t pa = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) rqi = snic_req_init(snic, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (!rqi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (snic->fwinfo.max_tgts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) ntgts = min_t(u32, snic->fwinfo.max_tgts, snic->shost->max_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) ntgts = snic->shost->max_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) /* Allocate Response Buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) SNIC_BUG_ON(ntgts == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) buf_len = ntgts * sizeof(struct snic_tgt_id) + SNIC_SG_DESC_ALIGN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) buf = kzalloc(buf_len, GFP_KERNEL|GFP_DMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (!buf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) snic_req_free(snic, rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) SNIC_HOST_ERR(snic->shost, "Resp Buf Alloc Failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) SNIC_BUG_ON((((unsigned long)buf) % SNIC_SG_DESC_ALIGN) != 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) pa = dma_map_single(&snic->pdev->dev, buf, buf_len, DMA_FROM_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) if (dma_mapping_error(&snic->pdev->dev, pa)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) "Rpt-tgt rspbuf %p: PCI DMA Mapping Failed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) kfree(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) snic_req_free(snic, rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) SNIC_BUG_ON(pa == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) rqi->sge_va = (ulong) buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) snic_report_tgt_init(rqi->req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) snic->config.hid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) buf_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) pa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) (ulong)rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) snic_handle_untagged_req(snic, rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) ret = snic_queue_wq_desc(snic, rqi->req, rqi->req_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) dma_unmap_single(&snic->pdev->dev, pa, buf_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) DMA_FROM_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) kfree(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) rqi->sge_va = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) snic_release_untagged_req(snic, rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) SNIC_HOST_ERR(snic->shost, "Queuing Report Tgts Failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) SNIC_DISC_DBG(snic->shost, "Report Targets Issued.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) "Queuing Report Targets Failed, err = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) } /* end of snic_queue_report_tgt_req */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) /* call into SML */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) snic_scsi_scan_tgt(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) struct snic_tgt *tgt = container_of(work, struct snic_tgt, scan_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) struct Scsi_Host *shost = dev_to_shost(&tgt->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) SNIC_HOST_INFO(shost, "Scanning Target id 0x%x\n", tgt->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) scsi_scan_target(&tgt->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) tgt->channel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) tgt->scsi_tgt_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) SCAN_WILD_CARD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) SCSI_SCAN_RESCAN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) spin_lock_irqsave(shost->host_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) tgt->flags &= ~SNIC_TGT_SCAN_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) spin_unlock_irqrestore(shost->host_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) } /* end of snic_scsi_scan_tgt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * snic_tgt_lookup :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static struct snic_tgt *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) snic_tgt_lookup(struct snic *snic, struct snic_tgt_id *tgtid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) struct list_head *cur, *nxt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) struct snic_tgt *tgt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) list_for_each_safe(cur, nxt, &snic->disc.tgt_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) tgt = list_entry(cur, struct snic_tgt, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (tgt->id == le32_to_cpu(tgtid->tgt_id))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) return tgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) tgt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) return tgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) } /* end of snic_tgt_lookup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * snic_tgt_dev_release : Called on dropping last ref for snic_tgt object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) snic_tgt_dev_release(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct snic_tgt *tgt = dev_to_tgt(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) SNIC_HOST_INFO(snic_tgt_to_shost(tgt),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) "Target Device ID %d (%s) Permanently Deleted.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) tgt->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) dev_name(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) SNIC_BUG_ON(!list_empty(&tgt->list));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) kfree(tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) * snic_tgt_del : work function to delete snic_tgt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) snic_tgt_del(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) struct snic_tgt *tgt = container_of(work, struct snic_tgt, del_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) struct Scsi_Host *shost = snic_tgt_to_shost(tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (tgt->flags & SNIC_TGT_SCAN_PENDING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) scsi_flush_work(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) /* Block IOs on child devices, stops new IOs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) scsi_target_block(&tgt->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) /* Cleanup IOs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) snic_tgt_scsi_abort_io(tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) /* Unblock IOs now, to flush if there are any. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) scsi_target_unblock(&tgt->dev, SDEV_TRANSPORT_OFFLINE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) /* Delete SCSI Target and sdevs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) scsi_remove_target(&tgt->dev); /* ?? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) device_del(&tgt->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) put_device(&tgt->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) } /* end of snic_tgt_del */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) /* snic_tgt_create: checks for existence of snic_tgt, if it doesn't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) * it creates one.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) static struct snic_tgt *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) snic_tgt_create(struct snic *snic, struct snic_tgt_id *tgtid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) struct snic_tgt *tgt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) tgt = snic_tgt_lookup(snic, tgtid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (tgt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) /* update the information if required */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) return tgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) tgt = kzalloc(sizeof(*tgt), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (!tgt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) SNIC_HOST_ERR(snic->shost, "Failure to allocate snic_tgt.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) return tgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) INIT_LIST_HEAD(&tgt->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) tgt->id = le32_to_cpu(tgtid->tgt_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) tgt->channel = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) SNIC_BUG_ON(le16_to_cpu(tgtid->tgt_type) > SNIC_TGT_SAN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) tgt->tdata.typ = le16_to_cpu(tgtid->tgt_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * Plugging into SML Device Tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) tgt->tdata.disc_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) tgt->state = SNIC_TGT_STAT_INIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) device_initialize(&tgt->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) tgt->dev.parent = get_device(&snic->shost->shost_gendev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) tgt->dev.release = snic_tgt_dev_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) INIT_WORK(&tgt->scan_work, snic_scsi_scan_tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) INIT_WORK(&tgt->del_work, snic_tgt_del);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) switch (tgt->tdata.typ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) case SNIC_TGT_DAS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) dev_set_name(&tgt->dev, "snic_das_tgt:%d:%d-%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) snic->shost->host_no, tgt->channel, tgt->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) case SNIC_TGT_SAN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) dev_set_name(&tgt->dev, "snic_san_tgt:%d:%d-%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) snic->shost->host_no, tgt->channel, tgt->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) SNIC_HOST_INFO(snic->shost, "Target type Unknown Detected.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) dev_set_name(&tgt->dev, "snic_das_tgt:%d:%d-%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) snic->shost->host_no, tgt->channel, tgt->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) spin_lock_irqsave(snic->shost->host_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) list_add_tail(&tgt->list, &snic->disc.tgt_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) tgt->scsi_tgt_id = snic->disc.nxt_tgt_id++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) tgt->state = SNIC_TGT_STAT_ONLINE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) spin_unlock_irqrestore(snic->shost->host_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) SNIC_HOST_INFO(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) "Tgt %d, type = %s detected. Adding..\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) tgt->id, snic_tgt_type_to_str(tgt->tdata.typ));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) ret = device_add(&tgt->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) "Snic Tgt: device_add, with err = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) put_device(&snic->shost->shost_gendev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) kfree(tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) tgt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) return tgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) SNIC_HOST_INFO(snic->shost, "Scanning %s.\n", dev_name(&tgt->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) scsi_queue_work(snic->shost, &tgt->scan_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) return tgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) } /* end of snic_tgt_create */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) /* Handler for discovery */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) snic_handle_tgt_disc(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) struct snic *snic = container_of(work, struct snic, tgt_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) struct snic_tgt_id *tgtid = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) struct snic_tgt *tgt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) spin_lock_irqsave(&snic->snic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) if (snic->in_remove) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) spin_unlock_irqrestore(&snic->snic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) kfree(snic->disc.rtgt_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) spin_unlock_irqrestore(&snic->snic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) mutex_lock(&snic->disc.mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) /* Discover triggered during disc in progress */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (snic->disc.req_cnt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) snic->disc.state = SNIC_DISC_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) snic->disc.req_cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) mutex_unlock(&snic->disc.mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) kfree(snic->disc.rtgt_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) snic->disc.rtgt_info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) SNIC_HOST_INFO(snic->shost, "tgt_disc: Discovery restart.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) /* Start Discovery Again */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) snic_disc_start(snic);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) tgtid = (struct snic_tgt_id *)snic->disc.rtgt_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) SNIC_BUG_ON(snic->disc.rtgt_cnt == 0 || tgtid == NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) for (i = 0; i < snic->disc.rtgt_cnt; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) tgt = snic_tgt_create(snic, &tgtid[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) if (!tgt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) int buf_sz = snic->disc.rtgt_cnt * sizeof(*tgtid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) SNIC_HOST_ERR(snic->shost, "Failed to create tgt.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) snic_hex_dump("rpt_tgt_rsp", (char *)tgtid, buf_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) snic->disc.rtgt_info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) snic->disc.state = SNIC_DISC_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) mutex_unlock(&snic->disc.mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) SNIC_HOST_INFO(snic->shost, "Discovery Completed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) kfree(tgtid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) } /* end of snic_handle_tgt_disc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) snic_report_tgt_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) u8 typ, cmpl_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) u32 cmnd_id, hid, tgt_cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) ulong ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) struct snic_tgt_id *tgtid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) int i, ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) snic_io_hdr_dec(&fwreq->hdr, &typ, &cmpl_stat, &cmnd_id, &hid, &ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) rqi = (struct snic_req_info *) ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) tgtid = (struct snic_tgt_id *) rqi->sge_va;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) tgt_cnt = le32_to_cpu(fwreq->u.rpt_tgts_cmpl.tgt_cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) if (tgt_cnt == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) SNIC_HOST_ERR(snic->shost, "No Targets Found on this host.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) /* printing list of targets here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) SNIC_HOST_INFO(snic->shost, "Target Count = %d\n", tgt_cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) SNIC_BUG_ON(tgt_cnt > snic->fwinfo.max_tgts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) for (i = 0; i < tgt_cnt; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) SNIC_HOST_INFO(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) "Tgt id = 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) le32_to_cpu(tgtid[i].tgt_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) * Queue work for further processing,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) * Response Buffer Memory is freed after creating targets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) snic->disc.rtgt_cnt = tgt_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) snic->disc.rtgt_info = (u8 *) tgtid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) queue_work(snic_glob->event_q, &snic->tgt_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) /* Unmap Response Buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) snic_pci_unmap_rsp_buf(snic, rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) kfree(tgtid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) rqi->sge_va = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) snic_release_untagged_req(snic, rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) } /* end of snic_report_tgt_cmpl_handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) /* Discovery init fn */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) snic_disc_init(struct snic_disc *disc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) INIT_LIST_HEAD(&disc->tgt_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) mutex_init(&disc->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) disc->disc_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) disc->nxt_tgt_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) disc->state = SNIC_DISC_INIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) disc->req_cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) disc->rtgt_cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) disc->rtgt_info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) disc->cb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) } /* end of snic_disc_init */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) /* Discovery, uninit fn */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) snic_disc_term(struct snic *snic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) struct snic_disc *disc = &snic->disc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) mutex_lock(&disc->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) if (disc->req_cnt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) disc->req_cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) SNIC_SCSI_DBG(snic->shost, "Terminating Discovery.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) mutex_unlock(&disc->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) * snic_disc_start: Discovery Start ...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) snic_disc_start(struct snic *snic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) struct snic_disc *disc = &snic->disc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) SNIC_SCSI_DBG(snic->shost, "Discovery Start.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) spin_lock_irqsave(&snic->snic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) if (snic->in_remove) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) spin_unlock_irqrestore(&snic->snic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) SNIC_ERR("snic driver removal in progress ...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) spin_unlock_irqrestore(&snic->snic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) mutex_lock(&disc->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) if (disc->state == SNIC_DISC_PENDING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) disc->req_cnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) mutex_unlock(&disc->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) disc->state = SNIC_DISC_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) mutex_unlock(&disc->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) ret = snic_queue_report_tgt_req(snic);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) SNIC_HOST_INFO(snic->shost, "Discovery Failed, err=%d.\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) } /* end of snic_disc_start */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) * snic_disc_work :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) snic_handle_disc(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) struct snic *snic = container_of(work, struct snic, disc_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) SNIC_HOST_INFO(snic->shost, "disc_work: Discovery\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) ret = snic_disc_start(snic);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) goto disc_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) disc_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) "disc_work: Discovery Failed w/ err = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) } /* end of snic_disc_work */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) * snic_tgt_del_all : cleanup all snic targets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) * Called on unbinding the interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) snic_tgt_del_all(struct snic *snic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) struct snic_tgt *tgt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) struct list_head *cur, *nxt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) scsi_flush_work(snic->shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) mutex_lock(&snic->disc.mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) spin_lock_irqsave(snic->shost->host_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) list_for_each_safe(cur, nxt, &snic->disc.tgt_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) tgt = list_entry(cur, struct snic_tgt, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) tgt->state = SNIC_TGT_STAT_DEL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) list_del_init(&tgt->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) SNIC_HOST_INFO(snic->shost, "Tgt %d q'ing for del\n", tgt->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) queue_work(snic_glob->event_q, &tgt->del_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) tgt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) spin_unlock_irqrestore(snic->shost->host_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) mutex_unlock(&snic->disc.mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) flush_workqueue(snic_glob->event_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) } /* end of snic_tgt_del_all */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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