^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/mempool.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/workqueue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/gfp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <scsi/scsi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <scsi/scsi_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <scsi/scsi_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <scsi/scsi_cmnd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <scsi/scsi_tcq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <scsi/scsi_dbg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include "snic_io.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include "snic.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define snic_cmd_tag(sc) (((struct scsi_cmnd *) sc)->request->tag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) const char *snic_state_str[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) [SNIC_INIT] = "SNIC_INIT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) [SNIC_ERROR] = "SNIC_ERROR",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) [SNIC_ONLINE] = "SNIC_ONLINE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) [SNIC_OFFLINE] = "SNIC_OFFLINE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) [SNIC_FWRESET] = "SNIC_FWRESET",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static const char * const snic_req_state_str[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) [SNIC_IOREQ_NOT_INITED] = "SNIC_IOREQ_NOT_INITED",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) [SNIC_IOREQ_PENDING] = "SNIC_IOREQ_PENDING",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) [SNIC_IOREQ_ABTS_PENDING] = "SNIC_IOREQ_ABTS_PENDING",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) [SNIC_IOREQ_ABTS_COMPLETE] = "SNIC_IOREQ_ABTS_COMPLETE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) [SNIC_IOREQ_LR_PENDING] = "SNIC_IOREQ_LR_PENDING",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) [SNIC_IOREQ_LR_COMPLETE] = "SNIC_IOREQ_LR_COMPLETE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) [SNIC_IOREQ_COMPLETE] = "SNIC_IOREQ_CMD_COMPLETE",
^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) /* snic cmd status strings */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static const char * const snic_io_status_str[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) [SNIC_STAT_IO_SUCCESS] = "SNIC_STAT_IO_SUCCESS", /* 0x0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) [SNIC_STAT_INVALID_HDR] = "SNIC_STAT_INVALID_HDR",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) [SNIC_STAT_OUT_OF_RES] = "SNIC_STAT_OUT_OF_RES",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) [SNIC_STAT_INVALID_PARM] = "SNIC_STAT_INVALID_PARM",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) [SNIC_STAT_REQ_NOT_SUP] = "SNIC_STAT_REQ_NOT_SUP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) [SNIC_STAT_IO_NOT_FOUND] = "SNIC_STAT_IO_NOT_FOUND",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) [SNIC_STAT_ABORTED] = "SNIC_STAT_ABORTED",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) [SNIC_STAT_TIMEOUT] = "SNIC_STAT_TIMEOUT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) [SNIC_STAT_SGL_INVALID] = "SNIC_STAT_SGL_INVALID",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) [SNIC_STAT_DATA_CNT_MISMATCH] = "SNIC_STAT_DATA_CNT_MISMATCH",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) [SNIC_STAT_FW_ERR] = "SNIC_STAT_FW_ERR",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) [SNIC_STAT_ITMF_REJECT] = "SNIC_STAT_ITMF_REJECT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) [SNIC_STAT_ITMF_FAIL] = "SNIC_STAT_ITMF_FAIL",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) [SNIC_STAT_ITMF_INCORRECT_LUN] = "SNIC_STAT_ITMF_INCORRECT_LUN",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) [SNIC_STAT_CMND_REJECT] = "SNIC_STAT_CMND_REJECT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) [SNIC_STAT_DEV_OFFLINE] = "SNIC_STAT_DEV_OFFLINE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) [SNIC_STAT_NO_BOOTLUN] = "SNIC_STAT_NO_BOOTLUN",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) [SNIC_STAT_SCSI_ERR] = "SNIC_STAT_SCSI_ERR",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) [SNIC_STAT_NOT_READY] = "SNIC_STAT_NOT_READY",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) [SNIC_STAT_FATAL_ERROR] = "SNIC_STAT_FATAL_ERROR",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static void snic_scsi_cleanup(struct snic *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) const char *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) snic_state_to_str(unsigned int state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (state >= ARRAY_SIZE(snic_state_str) || !snic_state_str[state])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return "Unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return snic_state_str[state];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static const char *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) snic_io_status_to_str(unsigned int state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if ((state >= ARRAY_SIZE(snic_io_status_str)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) (!snic_io_status_str[state]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return "Unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return snic_io_status_str[state];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static const char *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) snic_ioreq_state_to_str(unsigned int state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (state >= ARRAY_SIZE(snic_req_state_str) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) !snic_req_state_str[state])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return "Unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return snic_req_state_str[state];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static inline spinlock_t *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) snic_io_lock_hash(struct snic *snic, struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) u32 hash = snic_cmd_tag(sc) & (SNIC_IO_LOCKS - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return &snic->io_req_lock[hash];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static inline spinlock_t *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) snic_io_lock_tag(struct snic *snic, int tag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) return &snic->io_req_lock[tag & (SNIC_IO_LOCKS - 1)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /* snic_release_req_buf : Releases snic_req_info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) snic_release_req_buf(struct snic *snic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct snic_req_info *rqi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct snic_host_req *req = rqi_to_req(rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) /* Freeing cmd without marking completion, not okay */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) SNIC_BUG_ON(!((CMD_STATE(sc) == SNIC_IOREQ_COMPLETE) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) (CMD_STATE(sc) == SNIC_IOREQ_ABTS_COMPLETE) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) (CMD_FLAGS(sc) & SNIC_DEV_RST_NOTSUP) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) (CMD_FLAGS(sc) & SNIC_IO_INTERNAL_TERM_ISSUED) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) (CMD_FLAGS(sc) & SNIC_DEV_RST_TERM_ISSUED) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) (CMD_FLAGS(sc) & SNIC_SCSI_CLEANUP) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) (CMD_STATE(sc) == SNIC_IOREQ_LR_COMPLETE)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) "Rel_req:sc %p:tag %x:rqi %p:ioreq %p:abt %p:dr %p: state %s:flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) sc, snic_cmd_tag(sc), rqi, rqi->req, rqi->abort_req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) rqi->dr_req, snic_ioreq_state_to_str(CMD_STATE(sc)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (req->u.icmnd.sense_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) dma_unmap_single(&snic->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) le64_to_cpu(req->u.icmnd.sense_addr),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) SCSI_SENSE_BUFFERSIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) DMA_FROM_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) scsi_dma_unmap(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) snic_req_free(snic, rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) } /* end of snic_release_req_buf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * snic_queue_icmnd_req : Queues snic_icmnd request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) snic_queue_icmnd_req(struct snic *snic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct snic_req_info *rqi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct scsi_cmnd *sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) int sg_cnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) struct scatterlist *sg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct snic_sg_desc *sgd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) dma_addr_t pa = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) struct scsi_lun lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) u16 flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) if (sg_cnt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) flags = SNIC_ICMND_ESGL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) sgd = (struct snic_sg_desc *) req_to_sgl(rqi->req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) for_each_sg(scsi_sglist(sc), sg, sg_cnt, i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) sgd->addr = cpu_to_le64(sg_dma_address(sg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) sgd->len = cpu_to_le32(sg_dma_len(sg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) sgd->_resvd = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) sgd++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) pa = dma_map_single(&snic->pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) sc->sense_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) SCSI_SENSE_BUFFERSIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) DMA_FROM_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (dma_mapping_error(&snic->pdev->dev, pa)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) "QIcmnd:PCI Map Failed for sns buf %p tag %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) sc->sense_buffer, snic_cmd_tag(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) int_to_scsilun(sc->device->lun, &lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) if (sc->sc_data_direction == DMA_FROM_DEVICE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) flags |= SNIC_ICMND_RD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) if (sc->sc_data_direction == DMA_TO_DEVICE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) flags |= SNIC_ICMND_WR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) /* Initialize icmnd */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) snic_icmnd_init(rqi->req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) snic_cmd_tag(sc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) snic->config.hid, /* hid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) (ulong) rqi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) flags, /* command flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) rqi->tgt_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) lun.scsi_lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) sc->cmnd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) sc->cmd_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) scsi_bufflen(sc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) sg_cnt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) (ulong) req_to_sgl(rqi->req),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) pa, /* sense buffer pa */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) SCSI_SENSE_BUFFERSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) atomic64_inc(&snic->s_stats.io.active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) ret = snic_queue_wq_desc(snic, rqi->req, rqi->req_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) atomic64_dec(&snic->s_stats.io.active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) "QIcmnd: Queuing Icmnd Failed. ret = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) snic_stats_update_active_ios(&snic->s_stats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) } /* end of snic_queue_icmnd_req */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * snic_issue_scsi_req : Prepares IO request and Issues to FW.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) snic_issue_scsi_req(struct snic *snic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) struct snic_tgt *tgt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) int sg_cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) u32 tag = snic_cmd_tag(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) u64 cmd_trc = 0, cmd_st_flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) spinlock_t *io_lock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) CMD_STATE(sc) = SNIC_IOREQ_NOT_INITED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) CMD_FLAGS(sc) = SNIC_NO_FLAGS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) sg_cnt = scsi_dma_map(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) if (sg_cnt < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) SNIC_TRC((u16)snic->shost->host_no, tag, (ulong) sc, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) sc->cmnd[0], sg_cnt, CMD_STATE(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) SNIC_HOST_ERR(snic->shost, "issue_sc:Failed to map SG List.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) goto issue_sc_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) rqi = snic_req_init(snic, sg_cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (!rqi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) scsi_dma_unmap(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) goto issue_sc_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) rqi->tgt_id = tgt->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) rqi->sc = sc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) CMD_STATE(sc) = SNIC_IOREQ_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) CMD_SP(sc) = (char *) rqi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) cmd_trc = SNIC_TRC_CMD(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) CMD_FLAGS(sc) |= (SNIC_IO_INITIALIZED | SNIC_IO_ISSUED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) cmd_st_flags = SNIC_TRC_CMD_STATE_FLAGS(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) io_lock = snic_io_lock_hash(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) /* create wq desc and enqueue it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) ret = snic_queue_icmnd_req(snic, rqi, sc, sg_cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) "issue_sc: icmnd qing Failed for sc %p, err %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) sc, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) CMD_SP(sc) = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) CMD_STATE(sc) = SNIC_IOREQ_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) CMD_FLAGS(sc) &= ~SNIC_IO_ISSUED; /* turn off the flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) if (rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) snic_release_req_buf(snic, rqi, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) SNIC_TRC(snic->shost->host_no, tag, (ulong) sc, 0, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) SNIC_TRC_CMD_STATE_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) u32 io_sz = scsi_bufflen(sc) >> 9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) u32 qtime = jiffies - rqi->start_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) struct snic_io_stats *iostats = &snic->s_stats.io;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) if (io_sz > atomic64_read(&iostats->max_io_sz))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) atomic64_set(&iostats->max_io_sz, io_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) if (qtime > atomic64_read(&iostats->max_qtime))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) atomic64_set(&iostats->max_qtime, qtime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) "issue_sc:sc %p, tag %d queued to WQ.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) sc, tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) SNIC_TRC(snic->shost->host_no, tag, (ulong) sc, (ulong) rqi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) sg_cnt, cmd_trc, cmd_st_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) issue_sc_end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) } /* end of snic_issue_scsi_req */
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) * snic_queuecommand
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) * Routine to send a scsi cdb to LLD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) * Called with host_lock held and interrupts disabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) snic_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) struct snic_tgt *tgt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) struct snic *snic = shost_priv(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) tgt = starget_to_tgt(scsi_target(sc->device));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) ret = snic_tgt_chkready(tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) SNIC_HOST_ERR(shost, "Tgt %p id %d Not Ready.\n", tgt, tgt->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) atomic64_inc(&snic->s_stats.misc.tgt_not_rdy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) sc->result = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) sc->scsi_done(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) if (snic_get_state(snic) != SNIC_ONLINE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) SNIC_HOST_ERR(shost, "snic state is %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) snic_state_str[snic_get_state(snic)]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) return SCSI_MLQUEUE_HOST_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) atomic_inc(&snic->ios_inflight);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) SNIC_SCSI_DBG(shost, "sc %p Tag %d (sc %0x) lun %lld in snic_qcmd\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) sc, snic_cmd_tag(sc), sc->cmnd[0], sc->device->lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) ret = snic_issue_scsi_req(snic, tgt, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) SNIC_HOST_ERR(shost, "Failed to Q, Scsi Req w/ err %d.\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) ret = SCSI_MLQUEUE_HOST_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) atomic_dec(&snic->ios_inflight);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) } /* end of snic_queuecommand */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) * snic_process_abts_pending_state:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) * caller should hold IO lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) snic_proc_tmreq_pending_state(struct snic *snic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) struct scsi_cmnd *sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) u8 cmpl_status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) int state = CMD_STATE(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (state == SNIC_IOREQ_ABTS_PENDING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) CMD_FLAGS(sc) |= SNIC_IO_ABTS_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) else if (state == SNIC_IOREQ_LR_PENDING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) CMD_FLAGS(sc) |= SNIC_DEV_RST_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) SNIC_BUG_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) switch (cmpl_status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) case SNIC_STAT_IO_SUCCESS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) CMD_FLAGS(sc) |= SNIC_IO_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) case SNIC_STAT_ABORTED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) CMD_FLAGS(sc) |= SNIC_IO_ABORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) SNIC_BUG_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) * snic_process_io_failed_state:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) * Processes IO's error states
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) snic_process_io_failed_state(struct snic *snic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) struct snic_icmnd_cmpl *icmnd_cmpl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) struct scsi_cmnd *sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) u8 cmpl_stat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) int res = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) switch (cmpl_stat) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) case SNIC_STAT_TIMEOUT: /* Req was timedout */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) atomic64_inc(&snic->s_stats.misc.io_tmo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) res = DID_TIME_OUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) case SNIC_STAT_ABORTED: /* Req was aborted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) atomic64_inc(&snic->s_stats.misc.io_aborted);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) res = DID_ABORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) case SNIC_STAT_DATA_CNT_MISMATCH:/* Recv/Sent more/less data than exp */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) atomic64_inc(&snic->s_stats.misc.data_cnt_mismat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) scsi_set_resid(sc, le32_to_cpu(icmnd_cmpl->resid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) res = DID_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) case SNIC_STAT_OUT_OF_RES: /* Out of resources to complete request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) atomic64_inc(&snic->s_stats.fw.out_of_res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) res = DID_REQUEUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) case SNIC_STAT_IO_NOT_FOUND: /* Requested I/O was not found */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) atomic64_inc(&snic->s_stats.io.io_not_found);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) res = DID_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) case SNIC_STAT_SGL_INVALID: /* Req was aborted to due to sgl error*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) atomic64_inc(&snic->s_stats.misc.sgl_inval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) res = DID_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) case SNIC_STAT_FW_ERR: /* Req terminated due to FW Error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) atomic64_inc(&snic->s_stats.fw.io_errs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) res = DID_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) case SNIC_STAT_SCSI_ERR: /* FW hits SCSI Error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) atomic64_inc(&snic->s_stats.fw.scsi_errs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) case SNIC_STAT_NOT_READY: /* XPT yet to initialize */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) case SNIC_STAT_DEV_OFFLINE: /* Device offline */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) res = DID_NO_CONNECT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) case SNIC_STAT_INVALID_HDR: /* Hdr contains invalid data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) case SNIC_STAT_INVALID_PARM: /* Some param in req is invalid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) case SNIC_STAT_REQ_NOT_SUP: /* Req type is not supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) case SNIC_STAT_CMND_REJECT: /* Req rejected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) case SNIC_STAT_FATAL_ERROR: /* XPT Error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) "Invalid Hdr/Param or Req Not Supported or Cmnd Rejected or Device Offline. or Unknown\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) res = DID_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) SNIC_HOST_ERR(snic->shost, "fw returns failed status %s flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) snic_io_status_to_str(cmpl_stat), CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) /* Set sc->result */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) sc->result = (res << 16) | icmnd_cmpl->scsi_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) } /* end of snic_process_io_failed_state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) * snic_tmreq_pending : is task management in progress.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) snic_tmreq_pending(struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) int state = CMD_STATE(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) return ((state == SNIC_IOREQ_ABTS_PENDING) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) (state == SNIC_IOREQ_LR_PENDING));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) * snic_process_icmnd_cmpl_status:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) * Caller should hold io_lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) snic_process_icmnd_cmpl_status(struct snic *snic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) struct snic_icmnd_cmpl *icmnd_cmpl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) u8 cmpl_stat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) u8 scsi_stat = icmnd_cmpl->scsi_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) u64 xfer_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) /* Mark the IO as complete */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) CMD_STATE(sc) = SNIC_IOREQ_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) if (likely(cmpl_stat == SNIC_STAT_IO_SUCCESS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) sc->result = (DID_OK << 16) | scsi_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) xfer_len = scsi_bufflen(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) /* Update SCSI Cmd with resid value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) scsi_set_resid(sc, le32_to_cpu(icmnd_cmpl->resid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) if (icmnd_cmpl->flags & SNIC_ICMND_CMPL_UNDR_RUN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) xfer_len -= le32_to_cpu(icmnd_cmpl->resid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) atomic64_inc(&snic->s_stats.misc.io_under_run);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) if (icmnd_cmpl->scsi_status == SAM_STAT_TASK_SET_FULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) atomic64_inc(&snic->s_stats.misc.qfull);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) snic_process_io_failed_state(snic, icmnd_cmpl, sc, cmpl_stat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) atomic64_inc(&snic->s_stats.io.fail);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) "icmnd_cmpl: IO Failed : Hdr Status %s flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) snic_io_status_to_str(cmpl_stat), CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) } /* end of snic_process_icmnd_cmpl_status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) * snic_icmnd_cmpl_handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) * Routine to handle icmnd completions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) snic_icmnd_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) u8 typ, hdr_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) u32 cmnd_id, hid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) ulong ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) struct scsi_cmnd *sc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) struct snic_icmnd_cmpl *icmnd_cmpl = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) struct snic_host_req *req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) unsigned long flags, start_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) spinlock_t *io_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) u8 sc_stat = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) snic_io_hdr_dec(&fwreq->hdr, &typ, &hdr_stat, &cmnd_id, &hid, &ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) icmnd_cmpl = &fwreq->u.icmnd_cmpl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) sc_stat = icmnd_cmpl->scsi_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) "Icmnd_cmpl: type = %x, hdr_stat = %x, cmnd_id = %x, hid = %x,i ctx = %lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) typ, hdr_stat, cmnd_id, hid, ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) if (cmnd_id >= snic->max_tag_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) "Icmnd_cmpl:Tag Error:Out of Range Tag %d, hdr status = %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) cmnd_id, snic_io_status_to_str(hdr_stat));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) sc = scsi_host_find_tag(snic->shost, cmnd_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) WARN_ON_ONCE(!sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) if (!sc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) atomic64_inc(&snic->s_stats.io.sc_null);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) "Icmnd_cmpl: Scsi Cmnd Not found, sc = NULL Hdr Status = %s tag = 0x%x fwreq = 0x%p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) snic_io_status_to_str(hdr_stat),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) cmnd_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) fwreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) SNIC_TRC(snic->shost->host_no, cmnd_id, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) ((u64)hdr_stat << 16 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) (u64)sc_stat << 8 | (u64)icmnd_cmpl->flags),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) (ulong) fwreq, le32_to_cpu(icmnd_cmpl->resid), ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) io_lock = snic_io_lock_hash(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) "Icmnd_cmpl:lun %lld sc %p cmd %xtag %d flags 0x%llx rqi %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) sc->device->lun, sc, sc->cmnd[0], snic_cmd_tag(sc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) CMD_FLAGS(sc), rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) if (CMD_FLAGS(sc) & SNIC_HOST_RESET_CMD_TERM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) SNIC_BUG_ON(rqi != (struct snic_req_info *)ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) WARN_ON_ONCE(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) if (!rqi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) atomic64_inc(&snic->s_stats.io.req_null);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) CMD_FLAGS(sc) |= SNIC_IO_REQ_NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) "Icmnd_cmpl:Host Req Not Found(null), Hdr Status %s, Tag 0x%x, sc 0x%p flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) snic_io_status_to_str(hdr_stat),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) cmnd_id, sc, CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) rqi = (struct snic_req_info *) ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) start_time = rqi->start_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) /* firmware completed the io */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) rqi->io_cmpl = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) * if SCSI-ML has already issued abort on this command,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) * ignore completion of the IO. The abts path will clean it up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) if (unlikely(snic_tmreq_pending(sc))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) snic_proc_tmreq_pending_state(snic, sc, hdr_stat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) snic_stats_update_io_cmpl(&snic->s_stats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) /* Expected value is SNIC_STAT_ABORTED */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) if (likely(hdr_stat == SNIC_STAT_ABORTED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) "icmnd_cmpl:TM Req Pending(%s), Hdr Status %s sc 0x%p scsi status %x resid %d flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) snic_ioreq_state_to_str(CMD_STATE(sc)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) snic_io_status_to_str(hdr_stat),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) sc, sc_stat, le32_to_cpu(icmnd_cmpl->resid),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) SNIC_TRC(snic->shost->host_no, cmnd_id, (ulong) sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) jiffies_to_msecs(jiffies - start_time), (ulong) fwreq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) SNIC_TRC_CMD(sc), SNIC_TRC_CMD_STATE_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) if (snic_process_icmnd_cmpl_status(snic, icmnd_cmpl, hdr_stat, sc)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) scsi_print_command(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) "icmnd_cmpl:IO Failed, sc 0x%p Tag %d Cmd %x Hdr Status %s flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) sc, sc->cmnd[0], cmnd_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) snic_io_status_to_str(hdr_stat), CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) /* Break link with the SCSI Command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) CMD_SP(sc) = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) CMD_FLAGS(sc) |= SNIC_IO_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) /* For now, consider only successful IO. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) snic_calc_io_process_time(snic, rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) snic_release_req_buf(snic, rqi, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) SNIC_TRC(snic->shost->host_no, cmnd_id, (ulong) sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) jiffies_to_msecs(jiffies - start_time), (ulong) fwreq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) SNIC_TRC_CMD(sc), SNIC_TRC_CMD_STATE_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) if (sc->scsi_done)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) sc->scsi_done(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) snic_stats_update_io_cmpl(&snic->s_stats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) } /* end of snic_icmnd_cmpl_handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) snic_proc_dr_cmpl_locked(struct snic *snic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) struct snic_fw_req *fwreq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) u8 cmpl_stat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) u32 cmnd_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) struct snic_req_info *rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) u32 start_time = rqi->start_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) CMD_LR_STATUS(sc) = cmpl_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) SNIC_SCSI_DBG(snic->shost, "itmf_cmpl: Cmd State = %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) snic_ioreq_state_to_str(CMD_STATE(sc)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) CMD_FLAGS(sc) |= SNIC_DEV_RST_ABTS_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) SNIC_TRC(snic->shost->host_no, cmnd_id, (ulong) sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) jiffies_to_msecs(jiffies - start_time),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) (ulong) fwreq, 0, SNIC_TRC_CMD_STATE_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) "itmf_cmpl: Terminate Pending Dev Reset Cmpl Recvd.id %x, status %s flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) (int)(cmnd_id & SNIC_TAG_MASK),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) snic_io_status_to_str(cmpl_stat),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) if (CMD_FLAGS(sc) & SNIC_DEV_RST_TIMEDOUT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) SNIC_TRC(snic->shost->host_no, cmnd_id, (ulong) sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) jiffies_to_msecs(jiffies - start_time),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) (ulong) fwreq, 0, SNIC_TRC_CMD_STATE_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) "itmf_cmpl:Dev Reset Completion Received after timeout. id %d cmpl status %s flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) (int)(cmnd_id & SNIC_TAG_MASK),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) snic_io_status_to_str(cmpl_stat),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) CMD_STATE(sc) = SNIC_IOREQ_LR_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) CMD_FLAGS(sc) |= SNIC_DEV_RST_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) "itmf_cmpl:Dev Reset Cmpl Recvd id %d cmpl status %s flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) (int)(cmnd_id & SNIC_TAG_MASK),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) snic_io_status_to_str(cmpl_stat),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) if (rqi->dr_done)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) complete(rqi->dr_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) } /* end of snic_proc_dr_cmpl_locked */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) * snic_update_abort_stats : Updates abort stats based on completion status.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) snic_update_abort_stats(struct snic *snic, u8 cmpl_stat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) struct snic_abort_stats *abt_stats = &snic->s_stats.abts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) SNIC_SCSI_DBG(snic->shost, "Updating Abort stats.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) switch (cmpl_stat) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) case SNIC_STAT_IO_SUCCESS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) case SNIC_STAT_TIMEOUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) atomic64_inc(&abt_stats->fw_tmo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) case SNIC_STAT_IO_NOT_FOUND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) atomic64_inc(&abt_stats->io_not_found);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) atomic64_inc(&abt_stats->fail);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) snic_process_itmf_cmpl(struct snic *snic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) struct snic_fw_req *fwreq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) u32 cmnd_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) u8 cmpl_stat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) u32 tm_tags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) spinlock_t *io_lock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) u32 start_time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) io_lock = snic_io_lock_hash(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) if (CMD_FLAGS(sc) & SNIC_HOST_RESET_CMD_TERM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) WARN_ON_ONCE(!rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) if (!rqi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) atomic64_inc(&snic->s_stats.io.req_null);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) CMD_FLAGS(sc) |= SNIC_IO_ABTS_TERM_REQ_NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) "itmf_cmpl: rqi is null,Hdr stat = %s Tag = 0x%x sc = 0x%p flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) snic_io_status_to_str(cmpl_stat), cmnd_id, sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) /* Extract task management flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) tm_tags = cmnd_id & ~(SNIC_TAG_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) start_time = rqi->start_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) cmnd_id &= (SNIC_TAG_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) switch (tm_tags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) case SNIC_TAG_ABORT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) /* Abort only issued on cmd */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) snic_update_abort_stats(snic, cmpl_stat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) if (CMD_STATE(sc) != SNIC_IOREQ_ABTS_PENDING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) /* This is a late completion. Ignore it. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) ret = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) CMD_STATE(sc) = SNIC_IOREQ_ABTS_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) CMD_ABTS_STATUS(sc) = cmpl_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) CMD_FLAGS(sc) |= SNIC_IO_ABTS_TERM_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) "itmf_cmpl:Abort Cmpl Recvd.Tag 0x%x Status %s flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) cmnd_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) snic_io_status_to_str(cmpl_stat),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) * If scsi_eh thread is blocked waiting for abts complete,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) * signal completion to it. IO will be cleaned in the thread,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) * else clean it in this context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) if (rqi->abts_done) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) complete(rqi->abts_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) break; /* jump out */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) CMD_SP(sc) = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) sc->result = (DID_ERROR << 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) "itmf_cmpl: Completing IO. sc %p flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) sc, CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) snic_release_req_buf(snic, rqi, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) if (sc->scsi_done) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) SNIC_TRC(snic->shost->host_no, cmnd_id, (ulong) sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) jiffies_to_msecs(jiffies - start_time),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) (ulong) fwreq, SNIC_TRC_CMD(sc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) SNIC_TRC_CMD_STATE_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) sc->scsi_done(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) case SNIC_TAG_DEV_RST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) case SNIC_TAG_DEV_RST | SNIC_TAG_IOCTL_DEV_RST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) snic_proc_dr_cmpl_locked(snic, fwreq, cmpl_stat, cmnd_id, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) case SNIC_TAG_ABORT | SNIC_TAG_DEV_RST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) /* Abort and terminate completion of device reset req */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) CMD_STATE(sc) = SNIC_IOREQ_ABTS_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) CMD_ABTS_STATUS(sc) = cmpl_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) CMD_FLAGS(sc) |= SNIC_DEV_RST_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) "itmf_cmpl:dev reset abts cmpl recvd. id %d status %s flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) cmnd_id, snic_io_status_to_str(cmpl_stat),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) if (rqi->abts_done)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) complete(rqi->abts_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) "itmf_cmpl: Unknown TM tag bit 0x%x\n", tm_tags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) "itmf_cmpl:Unexpected itmf io stat %s Tag = 0x%x flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) snic_ioreq_state_to_str(CMD_STATE(sc)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) cmnd_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) ret = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) SNIC_BUG_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) } /* end of snic_process_itmf_cmpl_status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) * snic_itmf_cmpl_handler.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) * Routine to handle itmf completions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) snic_itmf_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) struct scsi_cmnd *sc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) struct snic_itmf_cmpl *itmf_cmpl = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) ulong ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) u32 cmnd_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) u32 hid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) u8 typ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) u8 hdr_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) snic_io_hdr_dec(&fwreq->hdr, &typ, &hdr_stat, &cmnd_id, &hid, &ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) "Itmf_cmpl: %s: type = %x, hdr_stat = %x, cmnd_id = %x, hid = %x,ctx = %lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) __func__, typ, hdr_stat, cmnd_id, hid, ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) itmf_cmpl = &fwreq->u.itmf_cmpl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) "Itmf_cmpl: nterm %u , flags 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) le32_to_cpu(itmf_cmpl->nterminated), itmf_cmpl->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) /* spl case, dev reset issued through ioctl */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) if (cmnd_id & SNIC_TAG_IOCTL_DEV_RST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) rqi = (struct snic_req_info *) ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) sc = rqi->sc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) goto ioctl_dev_rst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) if ((cmnd_id & SNIC_TAG_MASK) >= snic->max_tag_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) "Itmf_cmpl: Tag 0x%x out of Range,HdrStat %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) cmnd_id, snic_io_status_to_str(hdr_stat));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) SNIC_BUG_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) sc = scsi_host_find_tag(snic->shost, cmnd_id & SNIC_TAG_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) WARN_ON_ONCE(!sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) ioctl_dev_rst:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) if (!sc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) atomic64_inc(&snic->s_stats.io.sc_null);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) "Itmf_cmpl: sc is NULL - Hdr Stat %s Tag 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) snic_io_status_to_str(hdr_stat), cmnd_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) snic_process_itmf_cmpl(snic, fwreq, cmnd_id, hdr_stat, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) } /* end of snic_itmf_cmpl_handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) snic_hba_reset_scsi_cleanup(struct snic *snic, struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) struct snic_stats *st = &snic->s_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) long act_ios = 0, act_fwreqs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) SNIC_SCSI_DBG(snic->shost, "HBA Reset scsi cleanup.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) snic_scsi_cleanup(snic, snic_cmd_tag(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) /* Update stats on pending IOs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) act_ios = atomic64_read(&st->io.active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) atomic64_add(act_ios, &st->io.compl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) atomic64_sub(act_ios, &st->io.active);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) act_fwreqs = atomic64_read(&st->fw.actv_reqs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) atomic64_sub(act_fwreqs, &st->fw.actv_reqs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) * snic_hba_reset_cmpl_handler :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) * Notes :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) * 1. Cleanup all the scsi cmds, release all snic specific cmds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) * 2. Issue Report Targets in case of SAN targets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) snic_hba_reset_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) ulong ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) u32 cmnd_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) u32 hid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) u8 typ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) u8 hdr_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) struct scsi_cmnd *sc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) spinlock_t *io_lock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) unsigned long flags, gflags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) snic_io_hdr_dec(&fwreq->hdr, &typ, &hdr_stat, &cmnd_id, &hid, &ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) SNIC_HOST_INFO(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) "reset_cmpl:Tag %d ctx %lx cmpl status %s HBA Reset Completion received.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) cmnd_id, ctx, snic_io_status_to_str(hdr_stat));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) "reset_cmpl: type = %x, hdr_stat = %x, cmnd_id = %x, hid = %x, ctx = %lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) typ, hdr_stat, cmnd_id, hid, ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) /* spl case, host reset issued through ioctl */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) if (cmnd_id == SCSI_NO_TAG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) rqi = (struct snic_req_info *) ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) SNIC_HOST_INFO(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) "reset_cmpl:Tag %d ctx %lx cmpl stat %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) cmnd_id, ctx, snic_io_status_to_str(hdr_stat));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) sc = rqi->sc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) goto ioctl_hba_rst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) if (cmnd_id >= snic->max_tag_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) "reset_cmpl: Tag 0x%x out of Range,HdrStat %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) cmnd_id, snic_io_status_to_str(hdr_stat));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) SNIC_BUG_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) sc = scsi_host_find_tag(snic->shost, cmnd_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) ioctl_hba_rst:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) if (!sc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) atomic64_inc(&snic->s_stats.io.sc_null);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) "reset_cmpl: sc is NULL - Hdr Stat %s Tag 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) snic_io_status_to_str(hdr_stat), cmnd_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) SNIC_HOST_INFO(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) "reset_cmpl: sc %p rqi %p Tag %d flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) sc, rqi, cmnd_id, CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) io_lock = snic_io_lock_hash(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) if (!snic->remove_wait) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) "reset_cmpl:host reset completed after timeout\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) WARN_ON_ONCE(!rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) if (!rqi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) atomic64_inc(&snic->s_stats.io.req_null);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) CMD_FLAGS(sc) |= SNIC_IO_ABTS_TERM_REQ_NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) "reset_cmpl: rqi is null,Hdr stat %s Tag 0x%x sc 0x%p flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) snic_io_status_to_str(hdr_stat), cmnd_id, sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) /* stats */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) /* scsi cleanup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) snic_hba_reset_scsi_cleanup(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) SNIC_BUG_ON(snic_get_state(snic) != SNIC_OFFLINE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) snic_get_state(snic) != SNIC_FWRESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) /* Careful locking between snic_lock and io lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) spin_lock_irqsave(&snic->snic_lock, gflags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) if (snic_get_state(snic) == SNIC_FWRESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) snic_set_state(snic, SNIC_ONLINE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) spin_unlock_irqrestore(&snic->snic_lock, gflags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) if (snic->remove_wait)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) complete(snic->remove_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) atomic64_inc(&snic->s_stats.reset.hba_reset_cmpl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) /* Rediscovery is for SAN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) if (snic->config.xpt_type == SNIC_DAS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) SNIC_SCSI_DBG(snic->shost, "reset_cmpl: Queuing discovery work.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) queue_work(snic_glob->event_q, &snic->disc_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) snic_msg_ack_handler(struct snic *snic, struct snic_fw_req *fwreq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) SNIC_HOST_INFO(snic->shost, "Message Ack Received.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) SNIC_ASSERT_NOT_IMPL(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) snic_aen_handler(struct snic *snic, struct snic_fw_req *fwreq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) u8 typ, hdr_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) u32 cmnd_id, hid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) ulong ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) struct snic_async_evnotify *aen = &fwreq->u.async_ev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) u32 event_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) snic_io_hdr_dec(&fwreq->hdr, &typ, &hdr_stat, &cmnd_id, &hid, &ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) "aen: type = %x, hdr_stat = %x, cmnd_id = %x, hid = %x, ctx = %lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) typ, hdr_stat, cmnd_id, hid, ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) event_id = le32_to_cpu(aen->ev_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) switch (event_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) case SNIC_EV_TGT_OFFLINE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) SNIC_HOST_INFO(snic->shost, "aen:TGT_OFFLINE Event Recvd.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) case SNIC_EV_TGT_ONLINE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) SNIC_HOST_INFO(snic->shost, "aen:TGT_ONLINE Event Recvd.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) case SNIC_EV_LUN_OFFLINE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) SNIC_HOST_INFO(snic->shost, "aen:LUN_OFFLINE Event Recvd.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) case SNIC_EV_LUN_ONLINE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) SNIC_HOST_INFO(snic->shost, "aen:LUN_ONLINE Event Recvd.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) case SNIC_EV_CONF_CHG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) SNIC_HOST_INFO(snic->shost, "aen:Config Change Event Recvd.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) case SNIC_EV_TGT_ADDED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) SNIC_HOST_INFO(snic->shost, "aen:TGT_ADD Event Recvd.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) case SNIC_EV_TGT_DELTD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) SNIC_HOST_INFO(snic->shost, "aen:TGT_DEL Event Recvd.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) case SNIC_EV_LUN_ADDED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) SNIC_HOST_INFO(snic->shost, "aen:LUN_ADD Event Recvd.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) case SNIC_EV_LUN_DELTD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) SNIC_HOST_INFO(snic->shost, "aen:LUN_DEL Event Recvd.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) case SNIC_EV_DISC_CMPL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) SNIC_HOST_INFO(snic->shost, "aen:DISC_CMPL Event Recvd.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) SNIC_HOST_INFO(snic->shost, "aen:Unknown Event Recvd.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) SNIC_BUG_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) SNIC_ASSERT_NOT_IMPL(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) } /* end of snic_aen_handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) * snic_io_cmpl_handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) * Routine to process CQ entries(IO Completions) posted by fw.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) snic_io_cmpl_handler(struct vnic_dev *vdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) unsigned int cq_idx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) struct snic_fw_req *fwreq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) struct snic *snic = svnic_dev_priv(vdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) u64 start = jiffies, cmpl_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) snic_print_desc(__func__, (char *)fwreq, sizeof(*fwreq));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) /* Update FW Stats */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) if ((fwreq->hdr.type >= SNIC_RSP_REPORT_TGTS_CMPL) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) (fwreq->hdr.type <= SNIC_RSP_BOOT_LUNS_CMPL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) atomic64_dec(&snic->s_stats.fw.actv_reqs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) SNIC_BUG_ON((fwreq->hdr.type > SNIC_RSP_BOOT_LUNS_CMPL) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) (fwreq->hdr.type < SNIC_MSG_ASYNC_EVNOTIFY));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) /* Check for snic subsys errors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) switch (fwreq->hdr.status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) case SNIC_STAT_NOT_READY: /* XPT yet to initialize */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) "sNIC SubSystem is NOT Ready.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) case SNIC_STAT_FATAL_ERROR: /* XPT Error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) "sNIC SubSystem in Unrecoverable State.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) switch (fwreq->hdr.type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) case SNIC_RSP_EXCH_VER_CMPL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) snic_io_exch_ver_cmpl_handler(snic, fwreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) case SNIC_RSP_REPORT_TGTS_CMPL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) snic_report_tgt_cmpl_handler(snic, fwreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) case SNIC_RSP_ICMND_CMPL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) snic_icmnd_cmpl_handler(snic, fwreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) case SNIC_RSP_ITMF_CMPL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) snic_itmf_cmpl_handler(snic, fwreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) case SNIC_RSP_HBA_RESET_CMPL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) snic_hba_reset_cmpl_handler(snic, fwreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) case SNIC_MSG_ACK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) snic_msg_ack_handler(snic, fwreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) case SNIC_MSG_ASYNC_EVNOTIFY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) snic_aen_handler(snic, fwreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) SNIC_BUG_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) "Unknown Firmware completion request type %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) fwreq->hdr.type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) /* Update Stats */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) cmpl_time = jiffies - start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) if (cmpl_time > atomic64_read(&snic->s_stats.io.max_cmpl_time))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) atomic64_set(&snic->s_stats.io.max_cmpl_time, cmpl_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) } /* end of snic_io_cmpl_handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) * snic_fwcq_cmpl_handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) * Routine to process fwCQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) * This CQ is independent, and not associated with wq/rq/wq_copy queues
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) snic_fwcq_cmpl_handler(struct snic *snic, int io_cmpl_work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) unsigned int num_ent = 0; /* number cq entries processed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) unsigned int cq_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) unsigned int nent_per_cq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) struct snic_misc_stats *misc_stats = &snic->s_stats.misc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) for (cq_idx = snic->wq_count; cq_idx < snic->cq_count; cq_idx++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) nent_per_cq = vnic_cq_fw_service(&snic->cq[cq_idx],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) snic_io_cmpl_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) io_cmpl_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) num_ent += nent_per_cq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) if (nent_per_cq > atomic64_read(&misc_stats->max_cq_ents))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) atomic64_set(&misc_stats->max_cq_ents, nent_per_cq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) return num_ent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) } /* end of snic_fwcq_cmpl_handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) * snic_queue_itmf_req: Common API to queue Task Management requests.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) * Use rqi->tm_tag for passing special tags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) * @req_id : aborted request's tag, -1 for lun reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) snic_queue_itmf_req(struct snic *snic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) struct snic_host_req *tmreq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) struct scsi_cmnd *sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) u32 tmf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) u32 req_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) struct snic_req_info *rqi = req_to_rqi(tmreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) struct scsi_lun lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) int tm_tag = snic_cmd_tag(sc) | rqi->tm_tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) SNIC_BUG_ON(!rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) SNIC_BUG_ON(!rqi->tm_tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) /* fill in lun info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) int_to_scsilun(sc->device->lun, &lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) /* Initialize snic_host_req: itmf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) snic_itmf_init(tmreq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) tm_tag,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) snic->config.hid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) (ulong) rqi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) 0 /* flags */,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) req_id, /* Command to be aborted. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) rqi->tgt_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) lun.scsi_lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) tmf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) * In case of multiple aborts on same cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) * use try_wait_for_completion and completion_done() to check
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) * whether it queues aborts even after completion of abort issued
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) * prior.SNIC_BUG_ON(completion_done(&rqi->done));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) ret = snic_queue_wq_desc(snic, tmreq, sizeof(*tmreq));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) "qitmf:Queuing ITMF(%d) Req sc %p, rqi %p, req_id %d tag %d Failed, ret = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) tmf, sc, rqi, req_id, snic_cmd_tag(sc), ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) "qitmf:Queuing ITMF(%d) Req sc %p, rqi %p, req_id %d, tag %d (req_id)- Success.",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) tmf, sc, rqi, req_id, snic_cmd_tag(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) } /* end of snic_queue_itmf_req */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) snic_issue_tm_req(struct snic *snic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) struct snic_req_info *rqi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) struct scsi_cmnd *sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) int tmf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) struct snic_host_req *tmreq = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) int req_id = 0, tag = snic_cmd_tag(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) if (snic_get_state(snic) == SNIC_FWRESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) atomic_inc(&snic->ios_inflight);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) "issu_tmreq: Task mgmt req %d. rqi %p w/ tag %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) tmf, rqi, tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) if (tmf == SNIC_ITMF_LUN_RESET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) tmreq = snic_dr_req_init(snic, rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) req_id = SCSI_NO_TAG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) tmreq = snic_abort_req_init(snic, rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) req_id = tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) if (!tmreq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) goto tmreq_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) ret = snic_queue_itmf_req(snic, tmreq, sc, tmf, req_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) tmreq_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) "issu_tmreq: Queueing ITMF(%d) Req, sc %p rqi %p req_id %d tag %x fails err = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) tmf, sc, rqi, req_id, tag, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) "issu_tmreq: Queueing ITMF(%d) Req, sc %p, rqi %p, req_id %d tag %x - Success.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) tmf, sc, rqi, req_id, tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) atomic_dec(&snic->ios_inflight);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) * snic_queue_abort_req : Queues abort req to WQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) snic_queue_abort_req(struct snic *snic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) struct snic_req_info *rqi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) struct scsi_cmnd *sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) int tmf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) SNIC_SCSI_DBG(snic->shost, "q_abtreq: sc %p, rqi %p, tag %x, tmf %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) sc, rqi, snic_cmd_tag(sc), tmf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) /* Add special tag for abort */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) rqi->tm_tag |= SNIC_TAG_ABORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) return snic_issue_tm_req(snic, rqi, sc, tmf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) * snic_abort_finish : called by snic_abort_cmd on queuing abort successfully.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) snic_abort_finish(struct snic *snic, struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) spinlock_t *io_lock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) int ret = 0, tag = snic_cmd_tag(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) io_lock = snic_io_lock_hash(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) if (!rqi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) atomic64_inc(&snic->s_stats.io.req_null);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) CMD_FLAGS(sc) |= SNIC_IO_ABTS_TERM_REQ_NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) "abt_fini:req info is null tag 0x%x, sc 0x%p flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) tag, sc, CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) goto abort_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) rqi->abts_done = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) /* Check the abort status. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) switch (CMD_ABTS_STATUS(sc)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) case SNIC_INVALID_CODE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) /* Firmware didn't complete abort req, timedout */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) CMD_FLAGS(sc) |= SNIC_IO_ABTS_TIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) atomic64_inc(&snic->s_stats.abts.drv_tmo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) "abt_fini:sc %p Tag %x Driver Timeout.flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) sc, snic_cmd_tag(sc), CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) /* do not release snic request in timedout case */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) goto abort_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) case SNIC_STAT_IO_SUCCESS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) case SNIC_STAT_IO_NOT_FOUND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) ret = SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) * If abort path doesn't call scsi_done(),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) * the # IO timeouts == 2, will cause the LUN offline.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) * Call scsi_done to complete the IO.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) sc->result = (DID_ERROR << 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) sc->scsi_done(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) /* Firmware completed abort with error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) CMD_SP(sc) = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) SNIC_HOST_INFO(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) "abt_fini: Tag %x, Cmpl Status %s flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) tag, snic_io_status_to_str(CMD_ABTS_STATUS(sc)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) abort_fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) if (rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) snic_release_req_buf(snic, rqi, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) } /* end of snic_abort_finish */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) * snic_send_abort_and_wait : Issues Abort, and Waits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) snic_send_abort_and_wait(struct snic *snic, struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) enum snic_ioreq_state sv_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) struct snic_tgt *tgt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) spinlock_t *io_lock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) DECLARE_COMPLETION_ONSTACK(tm_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) int ret = 0, tmf = 0, tag = snic_cmd_tag(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) tgt = starget_to_tgt(scsi_target(sc->device));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) if ((snic_tgt_chkready(tgt) != 0) && (tgt->tdata.typ == SNIC_TGT_SAN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) tmf = SNIC_ITMF_ABTS_TASK_TERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) tmf = SNIC_ITMF_ABTS_TASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) /* stats */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) io_lock = snic_io_lock_hash(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) * Avoid a race between SCSI issuing the abort and the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) * completing the command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) * If the command is already completed by fw_cmpl code,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) * we just return SUCCESS from here. This means that the abort
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) * succeeded. In the SCSI ML, since the timeout for command has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) * happend, the completion wont actually complete the command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) * and it will be considered as an aborted command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) * The CMD_SP will not be cleared except while holding io_lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) if (!rqi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) "abt_cmd: rqi is null. Tag %d flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) tag, CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) ret = SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) goto send_abts_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) rqi->abts_done = &tm_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) goto abts_pending;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) SNIC_BUG_ON(!rqi->abts_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) /* Save Command State, should be restored on failed to Queue. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) sv_state = CMD_STATE(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) * Command is still pending, need to abort it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) * If the fw completes the command after this point,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) * the completion won't be done till mid-layer, since abot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) * has already started.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) CMD_STATE(sc) = SNIC_IOREQ_ABTS_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) CMD_ABTS_STATUS(sc) = SNIC_INVALID_CODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) SNIC_SCSI_DBG(snic->shost, "send_abt_cmd: TAG 0x%x\n", tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) /* Now Queue the abort command to firmware */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) ret = snic_queue_abort_req(snic, rqi, sc, tmf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) atomic64_inc(&snic->s_stats.abts.q_fail);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) "send_abt_cmd: IO w/ Tag 0x%x fail w/ err %d flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) tag, ret, CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) /* Restore Command's previous state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) CMD_STATE(sc) = sv_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) if (rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) rqi->abts_done = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) goto send_abts_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) if (tmf == SNIC_ITMF_ABTS_TASK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) CMD_FLAGS(sc) |= SNIC_IO_ABTS_ISSUED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) atomic64_inc(&snic->s_stats.abts.num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) /* term stats */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) CMD_FLAGS(sc) |= SNIC_IO_TERM_ISSUED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) "send_abt_cmd: sc %p Tag %x flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) sc, tag, CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) abts_pending:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) * Queued an abort IO, wait for its completion.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) * Once the fw completes the abort command, it will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) * wakeup this thread.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) wait_for_completion_timeout(&tm_done, SNIC_ABTS_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) send_abts_end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) } /* end of snic_send_abort_and_wait */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) * This function is exported to SCSI for sending abort cmnds.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) * A SCSI IO is represent by snic_ioreq in the driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) * The snic_ioreq is linked to the SCSI Cmd, thus a link with the ULP'S IO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) snic_abort_cmd(struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) struct snic *snic = shost_priv(sc->device->host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) int ret = SUCCESS, tag = snic_cmd_tag(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) u32 start_time = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) SNIC_SCSI_DBG(snic->shost, "abt_cmd:sc %p :0x%x :req = %p :tag = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) sc, sc->cmnd[0], sc->request, tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) if (unlikely(snic_get_state(snic) != SNIC_ONLINE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) "abt_cmd: tag %x Parent Devs are not rdy\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) ret = FAST_IO_FAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) goto abort_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) ret = snic_send_abort_and_wait(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) goto abort_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) ret = snic_abort_finish(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) abort_end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) SNIC_TRC(snic->shost->host_no, tag, (ulong) sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) jiffies_to_msecs(jiffies - start_time), 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) SNIC_TRC_CMD(sc), SNIC_TRC_CMD_STATE_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) "abts: Abort Req Status = %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) (ret == SUCCESS) ? "SUCCESS" :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) ((ret == FAST_IO_FAIL) ? "FAST_IO_FAIL" : "FAILED"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) snic_is_abts_pending(struct snic *snic, struct scsi_cmnd *lr_sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) struct scsi_cmnd *sc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) struct scsi_device *lr_sdev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) spinlock_t *io_lock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) u32 tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) if (lr_sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) lr_sdev = lr_sc->device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) /* walk through the tag map, an dcheck if IOs are still pending in fw*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) for (tag = 0; tag < snic->max_tag_id; tag++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) io_lock = snic_io_lock_tag(snic, tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) sc = scsi_host_find_tag(snic->shost, tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) if (!sc || (lr_sc && (sc->device != lr_sdev || sc == lr_sc))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) if (!rqi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) * Found IO that is still pending w/ firmware and belongs to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) * the LUN that is under reset, if lr_sc != NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) SNIC_SCSI_DBG(snic->shost, "Found IO in %s on LUN\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) snic_ioreq_state_to_str(CMD_STATE(sc)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) } /* end of snic_is_abts_pending */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) snic_dr_clean_single_req(struct snic *snic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) u32 tag,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) struct scsi_device *lr_sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) struct snic_tgt *tgt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) struct scsi_cmnd *sc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) spinlock_t *io_lock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) u32 sv_state = 0, tmf = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) DECLARE_COMPLETION_ONSTACK(tm_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) io_lock = snic_io_lock_tag(snic, tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) sc = scsi_host_find_tag(snic->shost, tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) /* Ignore Cmd that don't belong to Lun Reset device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) if (!sc || sc->device != lr_sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) goto skip_clean;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) if (!rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) goto skip_clean;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) goto skip_clean;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) if ((CMD_FLAGS(sc) & SNIC_DEVICE_RESET) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) (!(CMD_FLAGS(sc) & SNIC_DEV_RST_ISSUED))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) "clean_single_req: devrst is not pending sc 0x%p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) goto skip_clean;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) "clean_single_req: Found IO in %s on lun\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) snic_ioreq_state_to_str(CMD_STATE(sc)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) /* Save Command State */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) sv_state = CMD_STATE(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) * Any pending IO issued prior to reset is expected to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) * in abts pending state, if not we need to set SNIC_IOREQ_ABTS_PENDING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) * to indicate the IO is abort pending.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) * When IO is completed, the IO will be handed over and handled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) * in this function.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) CMD_STATE(sc) = SNIC_IOREQ_ABTS_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) SNIC_BUG_ON(rqi->abts_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) if (CMD_FLAGS(sc) & SNIC_DEVICE_RESET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) rqi->tm_tag = SNIC_TAG_DEV_RST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) "clean_single_req:devrst sc 0x%p\n", sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) CMD_ABTS_STATUS(sc) = SNIC_INVALID_CODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) rqi->abts_done = &tm_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) tgt = starget_to_tgt(scsi_target(sc->device));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) if ((snic_tgt_chkready(tgt) != 0) && (tgt->tdata.typ == SNIC_TGT_SAN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) tmf = SNIC_ITMF_ABTS_TASK_TERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) tmf = SNIC_ITMF_ABTS_TASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) /* Now queue the abort command to firmware */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) ret = snic_queue_abort_req(snic, rqi, sc, tmf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) "clean_single_req_err:sc %p, tag %d abt failed. tm_tag %d flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) sc, tag, rqi->tm_tag, CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) if (rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) rqi->abts_done = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) /* Restore Command State */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) CMD_STATE(sc) = sv_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) goto skip_clean;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) if (CMD_FLAGS(sc) & SNIC_DEVICE_RESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) CMD_FLAGS(sc) |= SNIC_DEV_RST_TERM_ISSUED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) CMD_FLAGS(sc) |= SNIC_IO_INTERNAL_TERM_ISSUED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) wait_for_completion_timeout(&tm_done, SNIC_ABTS_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) /* Recheck cmd state to check if it now aborted. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) if (!rqi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) CMD_FLAGS(sc) |= SNIC_IO_ABTS_TERM_REQ_NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) goto skip_clean;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) rqi->abts_done = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) /* if abort is still pending w/ fw, fail */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) if (CMD_ABTS_STATUS(sc) == SNIC_INVALID_CODE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) "clean_single_req_err:sc %p tag %d abt still pending w/ fw, tm_tag %d flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) sc, tag, rqi->tm_tag, CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) CMD_FLAGS(sc) |= SNIC_IO_ABTS_TERM_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) goto skip_clean;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) CMD_STATE(sc) = SNIC_IOREQ_ABTS_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) CMD_SP(sc) = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) snic_release_req_buf(snic, rqi, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) sc->result = (DID_ERROR << 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) sc->scsi_done(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) skip_clean:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) } /* end of snic_dr_clean_single_req */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) snic_dr_clean_pending_req(struct snic *snic, struct scsi_cmnd *lr_sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) struct scsi_device *lr_sdev = lr_sc->device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874) u32 tag = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) int ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) for (tag = 0; tag < snic->max_tag_id; tag++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) if (tag == snic_cmd_tag(lr_sc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) ret = snic_dr_clean_single_req(snic, tag, lr_sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883) SNIC_HOST_ERR(snic->shost, "clean_err:tag = %d\n", tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) goto clean_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) schedule_timeout(msecs_to_jiffies(100));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) /* Walk through all the cmds and check abts status. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) if (snic_is_abts_pending(snic, lr_sc)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) goto clean_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) SNIC_SCSI_DBG(snic->shost, "clean_pending_req: Success.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) clean_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904) ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) "Failed to Clean Pending IOs on %s device.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) dev_name(&lr_sdev->sdev_gendev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) } /* end of snic_dr_clean_pending_req */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) * snic_dr_finish : Called by snic_device_reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) snic_dr_finish(struct snic *snic, struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920) spinlock_t *io_lock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) int lr_res = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) int ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) io_lock = snic_io_lock_hash(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) if (!rqi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) "dr_fini: rqi is null tag 0x%x sc 0x%p flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) snic_cmd_tag(sc), sc, CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) goto dr_fini_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) rqi->dr_done = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) lr_res = CMD_LR_STATUS(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) switch (lr_res) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) case SNIC_INVALID_CODE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) /* stats */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) "dr_fini: Tag %x Dev Reset Timedout. flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) snic_cmd_tag(sc), CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) CMD_FLAGS(sc) |= SNIC_DEV_RST_TIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) goto dr_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) case SNIC_STAT_IO_SUCCESS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) "dr_fini: Tag %x Dev Reset cmpl\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) snic_cmd_tag(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963) "dr_fini:Device Reset completed& failed.Tag = %x lr_status %s flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) snic_cmd_tag(sc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) snic_io_status_to_str(lr_res), CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966) ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) goto dr_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) * Cleanup any IOs on this LUN that have still not completed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) * If any of these fail, then LUN Reset fails.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974) * Cleanup cleans all commands on this LUN except
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) * the lun reset command. If all cmds get cleaned, the LUN Reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) * succeeds.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) ret = snic_dr_clean_pending_req(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) "dr_fini: Device Reset Failed since could not abort all IOs. Tag = %x.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) snic_cmd_tag(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) goto dr_failed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) /* Cleanup LUN Reset Command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) if (rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993) ret = SUCCESS; /* Completed Successfully */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) dr_failed:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999) lockdep_assert_held(io_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) if (rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) CMD_SP(sc) = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) if (rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) snic_release_req_buf(snic, rqi, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) dr_fini_end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) } /* end of snic_dr_finish */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012) snic_queue_dr_req(struct snic *snic,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) struct snic_req_info *rqi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) /* Add special tag for device reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) rqi->tm_tag |= SNIC_TAG_DEV_RST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) return snic_issue_tm_req(snic, rqi, sc, SNIC_ITMF_LUN_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) snic_send_dr_and_wait(struct snic *snic, struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) enum snic_ioreq_state sv_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) spinlock_t *io_lock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) DECLARE_COMPLETION_ONSTACK(tm_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) int ret = FAILED, tag = snic_cmd_tag(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) io_lock = snic_io_lock_hash(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) CMD_FLAGS(sc) |= SNIC_DEVICE_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) if (!rqi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) "send_dr: rqi is null, Tag 0x%x flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) tag, CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042) ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) goto send_dr_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) /* Save Command state to restore in case Queuing failed. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) sv_state = CMD_STATE(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) CMD_STATE(sc) = SNIC_IOREQ_LR_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) CMD_LR_STATUS(sc) = SNIC_INVALID_CODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) SNIC_SCSI_DBG(snic->shost, "dr: TAG = %x\n", tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) rqi->dr_done = &tm_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055) SNIC_BUG_ON(!rqi->dr_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) * The Command state is changed to IOREQ_PENDING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) * in this case, if the command is completed, the icmnd_cmpl will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) * mark the cmd as completed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062) * This logic still makes LUN Reset is inevitable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) ret = snic_queue_dr_req(snic, rqi, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) "send_dr: IO w/ Tag 0x%x Failed err = %d. flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) tag, ret, CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) /* Restore State */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073) CMD_STATE(sc) = sv_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) if (rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) rqi->dr_done = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) /* rqi is freed in caller. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) goto send_dr_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) CMD_FLAGS(sc) |= SNIC_DEV_RST_ISSUED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) wait_for_completion_timeout(&tm_done, SNIC_LUN_RESET_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) send_dr_end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) * auxillary funciton to check lun reset op is supported or not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) * Not supported if returns 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101) snic_dev_reset_supported(struct scsi_device *sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) struct snic_tgt *tgt = starget_to_tgt(scsi_target(sdev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105) if (tgt->tdata.typ == SNIC_TGT_DAS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) snic_unlink_and_release_req(struct snic *snic, struct scsi_cmnd *sc, int flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115) spinlock_t *io_lock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117) u32 start_time = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119) io_lock = snic_io_lock_hash(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122) if (rqi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2123) start_time = rqi->start_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2124) CMD_SP(sc) = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2127) CMD_FLAGS(sc) |= flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2128) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2130) if (rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2131) snic_release_req_buf(snic, rqi, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2133) SNIC_TRC(snic->shost->host_no, snic_cmd_tag(sc), (ulong) sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2134) jiffies_to_msecs(jiffies - start_time), (ulong) rqi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2135) SNIC_TRC_CMD(sc), SNIC_TRC_CMD_STATE_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2138) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2139) * SCSI Eh thread issues a LUN Reset when one or more commands on a LUN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2140) * fail to get aborted. It calls driver's eh_device_reset with a SCSI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2141) * command on the LUN.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2142) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2143) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2144) snic_device_reset(struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2146) struct Scsi_Host *shost = sc->device->host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2147) struct snic *snic = shost_priv(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2148) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2149) int tag = snic_cmd_tag(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2150) int start_time = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2151) int ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2152) int dr_supp = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2154) SNIC_SCSI_DBG(shost, "dev_reset:sc %p :0x%x :req = %p :tag = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2155) sc, sc->cmnd[0], sc->request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2156) snic_cmd_tag(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2157) dr_supp = snic_dev_reset_supported(sc->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2158) if (!dr_supp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2159) /* device reset op is not supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2160) SNIC_HOST_INFO(shost, "LUN Reset Op not supported.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2161) snic_unlink_and_release_req(snic, sc, SNIC_DEV_RST_NOTSUP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2163) goto dev_rst_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2166) if (unlikely(snic_get_state(snic) != SNIC_ONLINE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2167) snic_unlink_and_release_req(snic, sc, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2168) SNIC_HOST_ERR(shost, "Devrst: Parent Devs are not online.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2170) goto dev_rst_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2173) /* There is no tag when lun reset is issue through ioctl. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2174) if (unlikely(tag <= SNIC_NO_TAG)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2175) SNIC_HOST_INFO(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2176) "Devrst: LUN Reset Recvd thru IOCTL.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2178) rqi = snic_req_init(snic, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2179) if (!rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2180) goto dev_rst_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2182) memset(scsi_cmd_priv(sc), 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2183) sizeof(struct snic_internal_io_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2184) CMD_SP(sc) = (char *)rqi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2185) CMD_FLAGS(sc) = SNIC_NO_FLAGS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2187) /* Add special tag for dr coming from user spc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2188) rqi->tm_tag = SNIC_TAG_IOCTL_DEV_RST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2189) rqi->sc = sc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2192) ret = snic_send_dr_and_wait(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2193) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2194) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2195) "Devrst: IO w/ Tag %x Failed w/ err = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2196) tag, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2198) snic_unlink_and_release_req(snic, sc, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2200) goto dev_rst_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2203) ret = snic_dr_finish(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2205) dev_rst_end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2206) SNIC_TRC(snic->shost->host_no, tag, (ulong) sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2207) jiffies_to_msecs(jiffies - start_time),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2208) 0, SNIC_TRC_CMD(sc), SNIC_TRC_CMD_STATE_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2210) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2211) "Devrst: Returning from Device Reset : %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2212) (ret == SUCCESS) ? "SUCCESS" : "FAILED");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2214) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2215) } /* end of snic_device_reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2217) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2218) * SCSI Error handling calls driver's eh_host_reset if all prior
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2219) * error handling levels return FAILED.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2220) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2221) * Host Reset is the highest level of error recovery. If this fails, then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2222) * host is offlined by SCSI.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2223) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2224) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2225) * snic_issue_hba_reset : Queues FW Reset Request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2226) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2227) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2228) snic_issue_hba_reset(struct snic *snic, struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2230) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2231) struct snic_host_req *req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2232) spinlock_t *io_lock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2233) DECLARE_COMPLETION_ONSTACK(wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2234) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2235) int ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2237) rqi = snic_req_init(snic, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2238) if (!rqi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2239) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2241) goto hba_rst_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2244) if (snic_cmd_tag(sc) == SCSI_NO_TAG) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2245) memset(scsi_cmd_priv(sc), 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2246) sizeof(struct snic_internal_io_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2247) SNIC_HOST_INFO(snic->shost, "issu_hr:Host reset thru ioctl.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2248) rqi->sc = sc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2251) req = rqi_to_req(rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2253) io_lock = snic_io_lock_hash(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2254) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2255) SNIC_BUG_ON(CMD_SP(sc) != NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2256) CMD_STATE(sc) = SNIC_IOREQ_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2257) CMD_SP(sc) = (char *) rqi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2258) CMD_FLAGS(sc) |= SNIC_IO_INITIALIZED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2259) snic->remove_wait = &wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2260) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2262) /* Initialize Request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2263) snic_io_hdr_enc(&req->hdr, SNIC_REQ_HBA_RESET, 0, snic_cmd_tag(sc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2264) snic->config.hid, 0, (ulong) rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2266) req->u.reset.flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2268) ret = snic_queue_wq_desc(snic, req, sizeof(*req));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2269) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2270) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2271) "issu_hr:Queuing HBA Reset Failed. w err %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2272) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2274) goto hba_rst_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2277) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2278) CMD_FLAGS(sc) |= SNIC_HOST_RESET_ISSUED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2279) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2280) atomic64_inc(&snic->s_stats.reset.hba_resets);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2281) SNIC_HOST_INFO(snic->shost, "Queued HBA Reset Successfully.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2283) wait_for_completion_timeout(snic->remove_wait,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2284) SNIC_HOST_RESET_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2286) if (snic_get_state(snic) == SNIC_FWRESET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2287) SNIC_HOST_ERR(snic->shost, "reset_cmpl: Reset Timedout.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2288) ret = -ETIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2290) goto hba_rst_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2293) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2294) snic->remove_wait = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2295) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2296) CMD_SP(sc) = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2297) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2299) if (rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2300) snic_req_free(snic, rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2302) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2304) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2306) hba_rst_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2307) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2308) snic->remove_wait = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2309) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2310) CMD_SP(sc) = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2311) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2313) if (rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2314) snic_req_free(snic, rqi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2316) hba_rst_end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2317) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2318) "reset:HBA Reset Failed w/ err = %d.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2319) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2321) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2322) } /* end of snic_issue_hba_reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2324) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2325) snic_reset(struct Scsi_Host *shost, struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2326) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2327) struct snic *snic = shost_priv(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2328) enum snic_state sv_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2329) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2330) int ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2332) /* Set snic state as SNIC_FWRESET*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2333) sv_state = snic_get_state(snic);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2335) spin_lock_irqsave(&snic->snic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2336) if (snic_get_state(snic) == SNIC_FWRESET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2337) spin_unlock_irqrestore(&snic->snic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2338) SNIC_HOST_INFO(shost, "reset:prev reset is in progres\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2340) msleep(SNIC_HOST_RESET_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2341) ret = SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2343) goto reset_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2344) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2346) snic_set_state(snic, SNIC_FWRESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2347) spin_unlock_irqrestore(&snic->snic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2350) /* Wait for all the IOs that are entered in Qcmd */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2351) while (atomic_read(&snic->ios_inflight))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2352) schedule_timeout(msecs_to_jiffies(1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2354) ret = snic_issue_hba_reset(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2355) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2356) SNIC_HOST_ERR(shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2357) "reset:Host Reset Failed w/ err %d.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2358) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2359) spin_lock_irqsave(&snic->snic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2360) snic_set_state(snic, sv_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2361) spin_unlock_irqrestore(&snic->snic_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2362) atomic64_inc(&snic->s_stats.reset.hba_reset_fail);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2363) ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2365) goto reset_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2368) ret = SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2370) reset_end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2371) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2372) } /* end of snic_reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2374) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2375) * SCSI Error handling calls driver's eh_host_reset if all prior
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2376) * error handling levels return FAILED.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2377) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2378) * Host Reset is the highest level of error recovery. If this fails, then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2379) * host is offlined by SCSI.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2380) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2381) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2382) snic_host_reset(struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2383) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2384) struct Scsi_Host *shost = sc->device->host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2385) u32 start_time = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2386) int ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2388) SNIC_SCSI_DBG(shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2389) "host reset:sc %p sc_cmd 0x%x req %p tag %d flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2390) sc, sc->cmnd[0], sc->request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2391) snic_cmd_tag(sc), CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2393) ret = snic_reset(shost, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2395) SNIC_TRC(shost->host_no, snic_cmd_tag(sc), (ulong) sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2396) jiffies_to_msecs(jiffies - start_time),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2397) 0, SNIC_TRC_CMD(sc), SNIC_TRC_CMD_STATE_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2399) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2400) } /* end of snic_host_reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2402) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2403) * snic_cmpl_pending_tmreq : Caller should hold io_lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2404) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2405) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2406) snic_cmpl_pending_tmreq(struct snic *snic, struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2407) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2408) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2410) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2411) "Completing Pending TM Req sc %p, state %s flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2412) sc, snic_io_status_to_str(CMD_STATE(sc)), CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2414) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2415) * CASE : FW didn't post itmf completion due to PCIe Errors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2416) * Marking the abort status as Success to call scsi completion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2417) * in snic_abort_finish()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2418) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2419) CMD_ABTS_STATUS(sc) = SNIC_STAT_IO_SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2421) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2422) if (!rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2423) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2425) if (rqi->dr_done)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2426) complete(rqi->dr_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2427) else if (rqi->abts_done)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2428) complete(rqi->abts_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2429) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2431) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2432) * snic_scsi_cleanup: Walks through tag map and releases the reqs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2433) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2434) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2435) snic_scsi_cleanup(struct snic *snic, int ex_tag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2436) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2437) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2438) struct scsi_cmnd *sc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2439) spinlock_t *io_lock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2440) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2441) int tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2442) u64 st_time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2444) SNIC_SCSI_DBG(snic->shost, "sc_clean: scsi cleanup.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2446) for (tag = 0; tag < snic->max_tag_id; tag++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2447) /* Skip ex_tag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2448) if (tag == ex_tag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2449) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2451) io_lock = snic_io_lock_tag(snic, tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2452) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2453) sc = scsi_host_find_tag(snic->shost, tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2454) if (!sc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2455) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2457) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2458) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2460) if (unlikely(snic_tmreq_pending(sc))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2461) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2462) * When FW Completes reset w/o sending completions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2463) * for outstanding ios.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2464) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2465) snic_cmpl_pending_tmreq(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2466) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2468) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2469) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2471) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2472) if (!rqi) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2473) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2475) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2476) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2478) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2479) "sc_clean: sc %p, rqi %p, tag %d flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2480) sc, rqi, tag, CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2482) CMD_SP(sc) = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2483) CMD_FLAGS(sc) |= SNIC_SCSI_CLEANUP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2484) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2485) st_time = rqi->start_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2487) SNIC_HOST_INFO(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2488) "sc_clean: Releasing rqi %p : flags 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2489) rqi, CMD_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2491) snic_release_req_buf(snic, rqi, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2493) cleanup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2494) sc->result = DID_TRANSPORT_DISRUPTED << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2495) SNIC_HOST_INFO(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2496) "sc_clean: DID_TRANSPORT_DISRUPTED for sc %p, Tag %d flags 0x%llx rqi %p duration %u msecs\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2497) sc, sc->request->tag, CMD_FLAGS(sc), rqi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2498) jiffies_to_msecs(jiffies - st_time));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2500) /* Update IO stats */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2501) snic_stats_update_io_cmpl(&snic->s_stats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2503) if (sc->scsi_done) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2504) SNIC_TRC(snic->shost->host_no, tag, (ulong) sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2505) jiffies_to_msecs(jiffies - st_time), 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2506) SNIC_TRC_CMD(sc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2507) SNIC_TRC_CMD_STATE_FLAGS(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2509) sc->scsi_done(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2510) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2511) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2512) } /* end of snic_scsi_cleanup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2514) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2515) snic_shutdown_scsi_cleanup(struct snic *snic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2516) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2517) SNIC_HOST_INFO(snic->shost, "Shutdown time SCSI Cleanup.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2519) snic_scsi_cleanup(snic, SCSI_NO_TAG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2520) } /* end of snic_shutdown_scsi_cleanup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2522) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2523) * snic_internal_abort_io
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2524) * called by : snic_tgt_scsi_abort_io
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2525) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2526) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2527) snic_internal_abort_io(struct snic *snic, struct scsi_cmnd *sc, int tmf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2528) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2529) struct snic_req_info *rqi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2530) spinlock_t *io_lock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2531) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2532) u32 sv_state = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2533) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2535) io_lock = snic_io_lock_hash(snic, sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2536) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2537) rqi = (struct snic_req_info *) CMD_SP(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2538) if (!rqi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2539) goto skip_internal_abts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2541) if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2542) goto skip_internal_abts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2544) if ((CMD_FLAGS(sc) & SNIC_DEVICE_RESET) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2545) (!(CMD_FLAGS(sc) & SNIC_DEV_RST_ISSUED))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2547) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2548) "internal_abts: dev rst not pending sc 0x%p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2549) sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2551) goto skip_internal_abts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2555) if (!(CMD_FLAGS(sc) & SNIC_IO_ISSUED)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2556) SNIC_SCSI_DBG(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2557) "internal_abts: IO not yet issued sc 0x%p tag 0x%x flags 0x%llx state %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2558) sc, snic_cmd_tag(sc), CMD_FLAGS(sc), CMD_STATE(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2560) goto skip_internal_abts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2563) sv_state = CMD_STATE(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2564) CMD_STATE(sc) = SNIC_IOREQ_ABTS_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2565) CMD_ABTS_STATUS(sc) = SNIC_INVALID_CODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2566) CMD_FLAGS(sc) |= SNIC_IO_INTERNAL_TERM_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2568) if (CMD_FLAGS(sc) & SNIC_DEVICE_RESET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2569) /* stats */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2570) rqi->tm_tag = SNIC_TAG_DEV_RST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2571) SNIC_SCSI_DBG(snic->shost, "internal_abts:dev rst sc %p\n", sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2572) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2574) SNIC_SCSI_DBG(snic->shost, "internal_abts: Issuing abts tag %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2575) snic_cmd_tag(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2576) SNIC_BUG_ON(rqi->abts_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2577) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2579) ret = snic_queue_abort_req(snic, rqi, sc, tmf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2580) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2581) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2582) "internal_abts: Tag = %x , Failed w/ err = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2583) snic_cmd_tag(sc), ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2585) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2587) if (CMD_STATE(sc) == SNIC_IOREQ_ABTS_PENDING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2588) CMD_STATE(sc) = sv_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2590) goto skip_internal_abts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2591) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2593) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2594) if (CMD_FLAGS(sc) & SNIC_DEVICE_RESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2595) CMD_FLAGS(sc) |= SNIC_DEV_RST_TERM_ISSUED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2596) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2597) CMD_FLAGS(sc) |= SNIC_IO_INTERNAL_TERM_ISSUED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2599) ret = SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2601) skip_internal_abts:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2602) lockdep_assert_held(io_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2603) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2605) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2606) } /* end of snic_internal_abort_io */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2608) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2609) * snic_tgt_scsi_abort_io : called by snic_tgt_del
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2610) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2611) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2612) snic_tgt_scsi_abort_io(struct snic_tgt *tgt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2613) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2614) struct snic *snic = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2615) struct scsi_cmnd *sc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2616) struct snic_tgt *sc_tgt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2617) spinlock_t *io_lock = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2618) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2619) int ret = 0, tag, abt_cnt = 0, tmf = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2621) if (!tgt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2622) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2624) snic = shost_priv(snic_tgt_to_shost(tgt));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2625) SNIC_SCSI_DBG(snic->shost, "tgt_abt_io: Cleaning Pending IOs.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2627) if (tgt->tdata.typ == SNIC_TGT_DAS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2628) tmf = SNIC_ITMF_ABTS_TASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2629) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2630) tmf = SNIC_ITMF_ABTS_TASK_TERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2632) for (tag = 0; tag < snic->max_tag_id; tag++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2633) io_lock = snic_io_lock_tag(snic, tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2635) spin_lock_irqsave(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2636) sc = scsi_host_find_tag(snic->shost, tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2637) if (!sc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2638) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2640) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2641) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2643) sc_tgt = starget_to_tgt(scsi_target(sc->device));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2644) if (sc_tgt != tgt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2645) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2647) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2648) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2649) spin_unlock_irqrestore(io_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2651) ret = snic_internal_abort_io(snic, sc, tmf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2652) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2653) SNIC_HOST_ERR(snic->shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2654) "tgt_abt_io: Tag %x, Failed w err = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2655) tag, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2657) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2658) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2660) if (ret == SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2661) abt_cnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2662) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2664) SNIC_SCSI_DBG(snic->shost, "tgt_abt_io: abt_cnt = %d\n", abt_cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2666) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2667) } /* end of snic_tgt_scsi_abort_io */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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